From 27d15f1e81098853313bed2782ea132ca2a3c7ac Mon Sep 17 00:00:00 2001 From: John Alanbrook Date: Tue, 18 Apr 2023 19:49:17 +0000 Subject: [PATCH] Before SED --- Makefile | 7 +- source/engine/2dphysics.c | 33 +- source/engine/duk_config.h | 3779 -- source/engine/duktape.c | 101351 ---------------------------------- source/engine/duktape.h | 1456 - source/engine/ffi.c | 357 +- source/engine/ffi.h | 15 +- source/engine/gameobject.c | 4 +- source/engine/input.c | 4 +- source/engine/mus-config.h | 0 source/engine/script.c | 77 +- source/engine/script.h | 12 +- source/engine/yugine.c | 2 - 13 files changed, 232 insertions(+), 106865 deletions(-) delete mode 100644 source/engine/duk_config.h delete mode 100644 source/engine/duktape.c delete mode 100644 source/engine/duktape.h delete mode 100644 source/engine/mus-config.h diff --git a/Makefile b/Makefile index 33555e9..2799d9e 100755 --- a/Makefile +++ b/Makefile @@ -23,8 +23,7 @@ else INFO = rel endif - - +# QuickJS options QFLAGS = $(LVL) -DDBG=$(DBG) -DED=$(ED) @@ -73,7 +72,7 @@ SEM = 0.0.1 COM != git rev-parse --short HEAD VER = $(SEM)-$(COM) -COMPILER_FLAGS = $(includeflag) $(QFLAGS) -MD $(WARNING_FLAGS) -DCP_USE_DOUBLES=0 -DTINYSPLINE_FLOAT_PRECISION -DDUK_USE_SYMBOL_BUILTIN -DVER=\"$(VER)\" -DINFO=\"$(INFO)\" -march=native -std=c99 -c $< -o $@ +COMPILER_FLAGS = $(includeflag) $(QFLAGS) -MD $(WARNING_FLAGS) -DCP_USE_DOUBLES=0 -DTINYSPLINE_FLOAT_PRECISION -DDUK_USE_SYMBOL_BUILTIN -DVER=\"$(VER)\" -DINFO=\"$(INFO)\" -DCONFIG_BIGNUM=y -DCONFIG_VERSION="2020-11-08" -march=native -std=c99 -c $< -o $@ LIBPATH = -L$(BIN) @@ -84,7 +83,7 @@ ifeq ($(OS), WIN32) EXT = .exe else LINKER_FLAGS = $(QFLAGS) -L/usr/local/lib -rdynamic - ELIBS = engine pthread yughc glfw3 c m dl + ELIBS = engine pthread yughc glfw3 quickjs c m dl CLIBS = endif diff --git a/source/engine/2dphysics.c b/source/engine/2dphysics.c index 1f89cbb..99c75be 100644 --- a/source/engine/2dphysics.c +++ b/source/engine/2dphysics.c @@ -659,31 +659,16 @@ void register_collide(void *sym) { void duk_call_phys_cb(cpVect norm, struct callee c, int hit, cpArbiter *arb) { - duk_push_heapptr(duk, c.fn); - duk_push_heapptr(duk, c.obj); - - int obj = duk_push_object(duk); - - vect2duk(norm); - duk_put_prop_literal(duk, obj, "normal"); - - duk_push_int(duk, hit); - duk_put_prop_literal(duk, obj, "hit"); - cpShape *shape1; cpShape *shape2; cpArbiterGetShapes(arb, &shape1, &shape2); - duk_push_boolean(duk, cpShapeGetSensor(shape2)); - duk_put_prop_literal(duk,obj,"sensor"); - - vect2duk(cpArbiterGetSurfaceVelocity(arb)); - duk_put_prop_literal(duk, obj, "velocity"); - - duk_call_method(duk,1); - -// if (duk_pcall_method(duk, 1)) -// duk_run_err(); - duk_pop(duk); + + JSValue obj = JS_NewObject(js); + JS_SetPropertyStr(js, obj, "normal", vec2js(norm)); + JS_SetPropertyStr(js, obj, "hit", JS_NewInt32(js, hit)); + JS_SetPropertyStr(js, obj, "sensor", JS_NewBool(js, cpShapeGetSensor(shape2))); + JS_SetPropertyStr(js, obj, "velocity", vec2js(cpArbiterGetSurfaceVelocity(arb))); + JS_Call(js, c.fn, c.obj, 1, &obj); } #define CTYPE_BEGIN 0 @@ -707,7 +692,7 @@ static cpBool handle_collision(cpArbiter *arb, int type) cpVect norm1 = cpArbiterGetNormal(arb); cpVect vel1 = cpArbiterGetSurfaceVelocity(arb); - +/* switch (type) { case CTYPE_BEGIN: for (int i = 0; i < arrlen(go->shape_cbs); i++) @@ -726,7 +711,7 @@ static cpBool handle_collision(cpArbiter *arb, int type) break; } - +*/ return 1; } diff --git a/source/engine/duk_config.h b/source/engine/duk_config.h deleted file mode 100644 index a4e997e..0000000 --- a/source/engine/duk_config.h +++ /dev/null @@ -1,3779 +0,0 @@ -/* - * duk_config.h configuration header generated by genconfig.py. - * - * Git commit: 03d4d728f8365021de6955c649e6dcd05dcca99f - * Git describe: 03d4d72-dirty - * Git branch: HEAD - * - * Supported platforms: - * - Mac OSX, iPhone, Darwin - * - Orbis - * - OpenBSD - * - Generic BSD - * - Atari ST TOS - * - AmigaOS - * - Durango (XboxOne) - * - Windows - * - Flashplayer (Crossbridge) - * - QNX - * - TI-Nspire - * - Emscripten - * - Android - * - Linux - * - Solaris - * - AIX - * - HPUX - * - Generic POSIX - * - Cygwin - * - Generic UNIX - * - Generic fallback - * - * Supported architectures: - * - x86 - * - x64 - * - x32 - * - ARM 32-bit - * - ARM 64-bit - * - MIPS 32-bit - * - MIPS 64-bit - * - PowerPC 32-bit - * - PowerPC 64-bit - * - SPARC 32-bit - * - SPARC 64-bit - * - RISC-V 32-bit - * - RISC-V 64-bit - * - SuperH - * - Motorola 68k - * - Emscripten - * - Generic - * - * Supported compilers: - * - Clang - * - GCC - * - MSVC - * - Emscripten - * - TinyC - * - VBCC - * - Bruce's C compiler - * - Generic - * - */ - -#if !defined(DUK_CONFIG_H_INCLUDED) -#define DUK_CONFIG_H_INCLUDED - -/* - * Intermediate helper defines - */ - -/* DLL build detection */ -/* not configured for DLL build */ -#undef DUK_F_DLL_BUILD - -/* Apple OSX, iOS */ -#if defined(__APPLE__) -#define DUK_F_APPLE -#endif - -/* FreeBSD */ -#if defined(__FreeBSD__) || defined(__FreeBSD) -#define DUK_F_FREEBSD -#endif - -/* Orbis (PS4) variant */ -#if defined(DUK_F_FREEBSD) && defined(__ORBIS__) -#define DUK_F_ORBIS -#endif - -/* OpenBSD */ -#if defined(__OpenBSD__) || defined(__OpenBSD) -#define DUK_F_OPENBSD -#endif - -/* NetBSD */ -#if defined(__NetBSD__) || defined(__NetBSD) -#define DUK_F_NETBSD -#endif - -/* BSD variant */ -#if defined(DUK_F_FREEBSD) || defined(DUK_F_NETBSD) || defined(DUK_F_OPENBSD) || \ - defined(__bsdi__) || defined(__DragonFly__) -#define DUK_F_BSD -#endif - -/* Atari ST TOS. __TOS__ defined by PureC. No platform define in VBCC - * apparently, so to use with VBCC user must define __TOS__ manually. - */ -#if defined(__TOS__) -#define DUK_F_TOS -#endif - -/* Motorola 68K. Not defined by VBCC, so user must define one of these - * manually when using VBCC. - */ -#if defined(__m68k__) || defined(M68000) || defined(__MC68K__) -#define DUK_F_M68K -#endif - -/* AmigaOS. Neither AMIGA nor __amigaos__ is defined on VBCC, so user must - * define 'AMIGA' manually when using VBCC. - */ -#if defined(AMIGA) || defined(__amigaos__) -#define DUK_F_AMIGAOS -#endif - -/* PowerPC */ -#if defined(__powerpc) || defined(__powerpc__) || defined(__PPC__) -#define DUK_F_PPC -#if defined(__PPC64__) || defined(__LP64__) || defined(_LP64) -#define DUK_F_PPC64 -#else -#define DUK_F_PPC32 -#endif -#endif - -/* Durango (Xbox One) */ -#if defined(_DURANGO) || defined(_XBOX_ONE) -#define DUK_F_DURANGO -#endif - -/* Windows, both 32-bit and 64-bit */ -#if defined(_WIN32) || defined(WIN32) || defined(_WIN64) || defined(WIN64) || \ - defined(__WIN32__) || defined(__TOS_WIN__) || defined(__WINDOWS__) -#define DUK_F_WINDOWS -#if defined(_WIN64) || defined(WIN64) -#define DUK_F_WIN64 -#else -#define DUK_F_WIN32 -#endif -#endif - -/* Flash player (e.g. Crossbridge) */ -#if defined(__FLASHPLAYER__) -#define DUK_F_FLASHPLAYER -#endif - -/* QNX */ -#if defined(__QNX__) -#define DUK_F_QNX -#endif - -/* TI-Nspire (using Ndless) */ -#if defined(_TINSPIRE) -#define DUK_F_TINSPIRE -#endif - -/* Emscripten (provided explicitly by user), improve if possible */ -#if defined(EMSCRIPTEN) -#define DUK_F_EMSCRIPTEN -#endif - -/* BCC (Bruce's C compiler): this is a "torture target" for compilation */ -#if defined(__BCC__) || defined(__BCC_VERSION__) -#define DUK_F_BCC -#endif - -#if defined(ANDROID) || defined(__ANDROID__) -#define DUK_F_ANDROID -#endif - -/* Linux */ -#if defined(__linux) || defined(__linux__) || defined(linux) -#define DUK_F_LINUX -#endif - -/* illumos / Solaris */ -#if defined(__sun) && defined(__SVR4) -#define DUK_F_SUN -#if defined(__SUNPRO_C) && (__SUNPRO_C < 0x550) -#define DUK_F_OLD_SOLARIS -/* Defines _ILP32 / _LP64 required by DUK_F_X86/DUK_F_X64. Platforms - * are processed before architectures, so this happens before the - * DUK_F_X86/DUK_F_X64 detection is emitted. - */ -#include -#endif -#endif - -/* AIX */ -#if defined(_AIX) -/* defined(__xlc__) || defined(__IBMC__): works but too wide */ -#define DUK_F_AIX -#endif - -/* HPUX */ -#if defined(__hpux) -#define DUK_F_HPUX -#if defined(__ia64) -#define DUK_F_HPUX_ITANIUM -#endif -#endif - -/* POSIX */ -#if defined(__posix) -#define DUK_F_POSIX -#endif - -/* Cygwin */ -#if defined(__CYGWIN__) -#define DUK_F_CYGWIN -#endif - -/* Generic Unix (includes Cygwin) */ -#if defined(__unix) || defined(__unix__) || defined(unix) || \ - defined(DUK_F_LINUX) || defined(DUK_F_BSD) -#define DUK_F_UNIX -#endif - -/* Intel x86 (32-bit), x64 (64-bit) or x32 (64-bit but 32-bit pointers), - * define only one of DUK_F_X86, DUK_F_X64, DUK_F_X32. - * https://sites.google.com/site/x32abi/ - * - * With DUK_F_OLD_SOLARIS the header must be included - * before this. - */ -#if defined(__amd64__) || defined(__amd64) || \ - defined(__x86_64__) || defined(__x86_64) || \ - defined(_M_X64) || defined(_M_AMD64) -#if defined(__ILP32__) || defined(_ILP32) -#define DUK_F_X32 -#else -#define DUK_F_X64 -#endif -#elif defined(i386) || defined(__i386) || defined(__i386__) || \ - defined(__i486__) || defined(__i586__) || defined(__i686__) || \ - defined(__IA32__) || defined(_M_IX86) || defined(__X86__) || \ - defined(_X86_) || defined(__THW_INTEL__) || defined(__I86__) -#if defined(__LP64__) || defined(_LP64) -/* This should not really happen, but would indicate x64. */ -#define DUK_F_X64 -#else -#define DUK_F_X86 -#endif -#endif - -/* ARM */ -#if defined(__arm__) || defined(__thumb__) || defined(_ARM) || defined(_M_ARM) || defined(_M_ARM64) || defined(__aarch64__) -#define DUK_F_ARM -#if defined(__LP64__) || defined(_LP64) || defined(__arm64) || defined(__arm64__) || defined(_M_ARM64) || defined(__aarch64__) -#define DUK_F_ARM64 -#else -#define DUK_F_ARM32 -#endif -#endif - -/* MIPS. Related defines: __MIPSEB__, __MIPSEL__, __mips_isa_rev, __LP64__ */ -#if defined(__mips__) || defined(mips) || defined(_MIPS_ISA) || \ - defined(_R3000) || defined(_R4000) || defined(_R5900) || \ - defined(_MIPS_ISA_MIPS1) || defined(_MIPS_ISA_MIPS2) || \ - defined(_MIPS_ISA_MIPS3) || defined(_MIPS_ISA_MIPS4) || \ - defined(__mips) || defined(__MIPS__) -#define DUK_F_MIPS -#if defined(__LP64__) || defined(_LP64) || defined(__mips64) || \ - defined(__mips64__) || defined(__mips_n64) -#define DUK_F_MIPS64 -#else -#define DUK_F_MIPS32 -#endif -#endif - -/* SPARC */ -#if defined(sparc) || defined(__sparc) || defined(__sparc__) -#define DUK_F_SPARC -#if defined(__LP64__) || defined(_LP64) -#define DUK_F_SPARC64 -#else -#define DUK_F_SPARC32 -#endif -#endif - -/* RISC-V, https://github.com/riscv/riscv-toolchain-conventions#cc-preprocessor-definitions */ -#if defined(__riscv) -#define DUK_F_RISCV -#if defined(__riscv_xlen) -#if (__riscv_xlen == 32) -#define DUK_F_RISCV32 -#elif (__riscv_xlen == 64) -#define DUK_F_RISCV64 -#else -#error __riscv_xlen has unsupported value (not 32 or 64) -#endif -#else -#error __riscv defined without __riscv_xlen -#endif -#endif /* __riscv */ - -/* SuperH */ -#if defined(__sh__) || \ - defined(__sh1__) || defined(__SH1__) || \ - defined(__sh2__) || defined(__SH2__) || \ - defined(__sh3__) || defined(__SH3__) || \ - defined(__sh4__) || defined(__SH4__) || \ - defined(__sh5__) || defined(__SH5__) -#define DUK_F_SUPERH -#endif - -/* Clang */ -#if defined(__clang__) -#define DUK_F_CLANG -#endif - -/* C++ */ -#undef DUK_F_CPP -#if defined(__cplusplus) -#define DUK_F_CPP -#endif - -/* C99 or above */ -#undef DUK_F_C99 -#if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) -#define DUK_F_C99 -#endif - -/* C++11 or above */ -#undef DUK_F_CPP11 -#if defined(__cplusplus) && (__cplusplus >= 201103L) -#define DUK_F_CPP11 -#endif - -/* GCC. Clang also defines __GNUC__ so don't detect GCC if using Clang. */ -#if defined(__GNUC__) && !defined(__clang__) && !defined(DUK_F_CLANG) -#define DUK_F_GCC -#if defined(__GNUC__) && defined(__GNUC_MINOR__) && defined(__GNUC_PATCHLEVEL__) -/* Convenience, e.g. gcc 4.5.1 == 40501; http://stackoverflow.com/questions/6031819/emulating-gccs-builtin-unreachable */ -#define DUK_F_GCC_VERSION (__GNUC__ * 10000L + __GNUC_MINOR__ * 100L + __GNUC_PATCHLEVEL__) -#else -#error cannot figure out gcc version -#endif -#endif - -/* MinGW. Also GCC flags (DUK_F_GCC) are enabled now. */ -#if defined(__MINGW32__) || defined(__MINGW64__) -#define DUK_F_MINGW -#endif - -/* MSVC */ -#if defined(_MSC_VER) -/* MSVC preprocessor defines: http://msdn.microsoft.com/en-us/library/b0084kay.aspx - * _MSC_FULL_VER includes the build number, but it has at least two formats, see e.g. - * BOOST_MSVC_FULL_VER in http://www.boost.org/doc/libs/1_52_0/boost/config/compiler/visualc.hpp - */ -#define DUK_F_MSVC -#if defined(_MSC_FULL_VER) -#if (_MSC_FULL_VER > 100000000) -#define DUK_F_MSVC_FULL_VER _MSC_FULL_VER -#else -#define DUK_F_MSCV_FULL_VER (_MSC_FULL_VER * 10) -#endif -#endif -#endif /* _MSC_VER */ - -/* TinyC */ -#if defined(__TINYC__) -/* http://bellard.org/tcc/tcc-doc.html#SEC9 */ -#define DUK_F_TINYC -#endif - -/* VBCC */ -#if defined(__VBCC__) -#define DUK_F_VBCC -#endif - -/* Atari Mint */ -#if defined(__MINT__) -#define DUK_F_MINT -#endif - -/* - * Platform autodetection - */ - -/* Workaround for older C++ compilers before including , - * see e.g.: https://sourceware.org/bugzilla/show_bug.cgi?id=15366 - */ -#if defined(__cplusplus) && !defined(__STDC_LIMIT_MACROS) -#define __STDC_LIMIT_MACROS -#endif -#if defined(__cplusplus) && !defined(__STDC_CONSTANT_MACROS) -#define __STDC_CONSTANT_MACROS -#endif - -#if defined(DUK_F_APPLE) -/* --- Mac OSX, iPhone, Darwin --- */ -#define DUK_USE_DATE_NOW_GETTIMEOFDAY -#define DUK_USE_DATE_TZO_GMTIME_R -#define DUK_USE_DATE_PRS_STRPTIME -#define DUK_USE_DATE_FMT_STRFTIME -#include -#include -#include -#include -#include - -/* http://stackoverflow.com/questions/5919996/how-to-detect-reliably-mac-os-x-ios-linux-windows-in-c-preprocessor */ -#if TARGET_IPHONE_SIMULATOR -#define DUK_USE_OS_STRING "iphone-sim" -#elif TARGET_OS_IPHONE -#define DUK_USE_OS_STRING "iphone" -#elif TARGET_OS_MAC -#define DUK_USE_OS_STRING "osx" -#else -#define DUK_USE_OS_STRING "osx-unknown" -#endif - -/* Use _setjmp() on Apple by default, see GH-55. */ -#define DUK_JMPBUF_TYPE jmp_buf -#define DUK_SETJMP(jb) _setjmp((jb)) -#define DUK_LONGJMP(jb) _longjmp((jb), 1) -#elif defined(DUK_F_ORBIS) -/* --- Orbis --- */ -/* Orbis = PS4 */ -#define DUK_USE_DATE_NOW_GETTIMEOFDAY -#define DUK_USE_DATE_TZO_GMTIME_S -/* no parsing (not an error) */ -#define DUK_USE_DATE_FMT_STRFTIME -#include -#include -#include -#include -#include - -#define DUK_USE_OS_STRING "orbis" -#elif defined(DUK_F_OPENBSD) -/* --- OpenBSD --- */ -/* http://www.monkey.org/openbsd/archive/ports/0401/msg00089.html */ -#define DUK_USE_DATE_NOW_GETTIMEOFDAY -#define DUK_USE_DATE_TZO_GMTIME_R -#define DUK_USE_DATE_PRS_STRPTIME -#define DUK_USE_DATE_FMT_STRFTIME -#include -#include -#include -#include -#include - -#define DUK_USE_OS_STRING "openbsd" -#elif defined(DUK_F_BSD) -/* --- Generic BSD --- */ -#define DUK_USE_DATE_NOW_GETTIMEOFDAY -#define DUK_USE_DATE_TZO_GMTIME_R -#define DUK_USE_DATE_PRS_STRPTIME -#define DUK_USE_DATE_FMT_STRFTIME -#include -#include -#include -#include -#include - -#define DUK_USE_OS_STRING "bsd" -#elif defined(DUK_F_TOS) -/* --- Atari ST TOS --- */ -#define DUK_USE_DATE_NOW_TIME -#define DUK_USE_DATE_TZO_GMTIME -/* no parsing (not an error) */ -#define DUK_USE_DATE_FMT_STRFTIME -#include - -#define DUK_USE_OS_STRING "tos" - -/* TOS on M68K is always big endian. */ -#if !defined(DUK_USE_BYTEORDER) && defined(DUK_F_M68K) -#define DUK_USE_BYTEORDER 3 -#endif -#elif defined(DUK_F_AMIGAOS) -/* --- AmigaOS --- */ -#if defined(DUK_F_M68K) -/* AmigaOS on M68k */ -#define DUK_USE_DATE_NOW_TIME -#define DUK_USE_DATE_TZO_GMTIME -/* no parsing (not an error) */ -#define DUK_USE_DATE_FMT_STRFTIME -#include -#elif defined(DUK_F_PPC) -#define DUK_USE_DATE_NOW_GETTIMEOFDAY -#define DUK_USE_DATE_TZO_GMTIME_R -#define DUK_USE_DATE_PRS_STRPTIME -#define DUK_USE_DATE_FMT_STRFTIME -#include -#if !defined(UINTPTR_MAX) -#define UINTPTR_MAX UINT_MAX -#endif -#else -#error AmigaOS but not M68K/PPC, not supported now -#endif - -#define DUK_USE_OS_STRING "amigaos" - -/* AmigaOS on M68K or PPC is always big endian. */ -#if !defined(DUK_USE_BYTEORDER) && (defined(DUK_F_M68K) || defined(DUK_F_PPC)) -#define DUK_USE_BYTEORDER 3 -#endif -#elif defined(DUK_F_DURANGO) -/* --- Durango (XboxOne) --- */ -/* Durango = XboxOne - * Configuration is nearly identical to Windows, except for - * DUK_USE_DATE_TZO_WINDOWS. - */ - -/* Initial fix: disable secure CRT related warnings when compiling Duktape - * itself (must be defined before including Windows headers). Don't define - * for user code including duktape.h. - */ -#if defined(DUK_COMPILING_DUKTAPE) && !defined(_CRT_SECURE_NO_WARNINGS) -#define _CRT_SECURE_NO_WARNINGS -#endif - -/* MSVC does not have sys/param.h */ -#define DUK_USE_DATE_NOW_WINDOWS -#define DUK_USE_DATE_TZO_WINDOWS_NO_DST -/* Note: PRS and FMT are intentionally left undefined for now. This means - * there is no platform specific date parsing/formatting but there is still - * the ISO 8601 standard format. - */ -#if defined(DUK_COMPILING_DUKTAPE) -/* Only include when compiling Duktape to avoid polluting application build - * with a lot of unnecessary defines. - */ -#include -#endif - -#define DUK_USE_OS_STRING "durango" - -#if !defined(DUK_USE_BYTEORDER) -#define DUK_USE_BYTEORDER 1 -#endif -#elif defined(DUK_F_WINDOWS) -/* --- Windows --- */ -/* Windows version can't obviously be determined at compile time, - * but _WIN32_WINNT indicates the minimum version targeted: - * - https://msdn.microsoft.com/en-us/library/6sehtctf.aspx - */ - -/* Initial fix: disable secure CRT related warnings when compiling Duktape - * itself (must be defined before including Windows headers). Don't define - * for user code including duktape.h. - */ -#if defined(DUK_COMPILING_DUKTAPE) && !defined(_CRT_SECURE_NO_WARNINGS) -#define _CRT_SECURE_NO_WARNINGS -#endif - -/* Windows 32-bit and 64-bit are currently the same. */ -/* MSVC does not have sys/param.h */ - -#if defined(DUK_COMPILING_DUKTAPE) -/* Only include when compiling Duktape to avoid polluting application build - * with a lot of unnecessary defines. - */ -#include -#endif - -/* GetSystemTimePreciseAsFileTime() available from Windows 8: - * https://msdn.microsoft.com/en-us/library/windows/desktop/hh706895(v=vs.85).aspx - */ -#if defined(DUK_USE_DATE_NOW_WINDOWS_SUBMS) || defined(DUK_USE_DATE_NOW_WINDOWS) -/* User forced provider. */ -#else -#if defined(_WIN32_WINNT) && (_WIN32_WINNT >= 0x0602) -#define DUK_USE_DATE_NOW_WINDOWS_SUBMS -#else -#define DUK_USE_DATE_NOW_WINDOWS -#endif -#endif - -#define DUK_USE_DATE_TZO_WINDOWS - -/* Note: PRS and FMT are intentionally left undefined for now. This means - * there is no platform specific date parsing/formatting but there is still - * the ISO 8601 standard format. - */ - -/* QueryPerformanceCounter() may go backwards in Windows XP, so enable for - * Vista and later: https://msdn.microsoft.com/en-us/library/windows/desktop/dn553408(v=vs.85).aspx#qpc_support_in_windows_versions - */ -#if !defined(DUK_USE_GET_MONOTONIC_TIME_WINDOWS_QPC) && \ - defined(_WIN32_WINNT) && (_WIN32_WINNT >= 0x0600) -#define DUK_USE_GET_MONOTONIC_TIME_WINDOWS_QPC -#endif - -#define DUK_USE_OS_STRING "windows" - -/* On Windows, assume we're little endian. Even Itanium which has a - * configurable endianness runs little endian in Windows. - */ -#if !defined(DUK_USE_BYTEORDER) -#define DUK_USE_BYTEORDER 1 -#endif -#elif defined(DUK_F_FLASHPLAYER) -/* --- Flashplayer (Crossbridge) --- */ -#define DUK_USE_DATE_NOW_GETTIMEOFDAY -#define DUK_USE_DATE_TZO_GMTIME_R -#define DUK_USE_DATE_PRS_STRPTIME -#define DUK_USE_DATE_FMT_STRFTIME -#include -#include -#include -#include - -#define DUK_USE_OS_STRING "flashplayer" - -#if !defined(DUK_USE_BYTEORDER) && defined(DUK_F_FLASHPLAYER) -#define DUK_USE_BYTEORDER 1 -#endif -#elif defined(DUK_F_QNX) -/* --- QNX --- */ -#if defined(DUK_F_QNX) && defined(DUK_COMPILING_DUKTAPE) -/* See: /opt/qnx650/target/qnx6/usr/include/sys/platform.h */ -#define _XOPEN_SOURCE 600 -#define _POSIX_C_SOURCE 200112L -#endif - -#define DUK_USE_DATE_NOW_GETTIMEOFDAY -#define DUK_USE_DATE_TZO_GMTIME_R -#define DUK_USE_DATE_PRS_STRPTIME -#define DUK_USE_DATE_FMT_STRFTIME -#include -#include -#include -#include - -#define DUK_USE_OS_STRING "qnx" -#elif defined(DUK_F_TINSPIRE) -/* --- TI-Nspire --- */ -#if defined(DUK_COMPILING_DUKTAPE) && !defined(_XOPEN_SOURCE) -#define _XOPEN_SOURCE /* e.g. strptime */ -#endif - -#define DUK_USE_DATE_NOW_GETTIMEOFDAY -#define DUK_USE_DATE_TZO_GMTIME_R -#define DUK_USE_DATE_PRS_STRPTIME -#define DUK_USE_DATE_FMT_STRFTIME -#include -#include -#include -#include - -#define DUK_USE_OS_STRING "tinspire" -#elif defined(DUK_F_EMSCRIPTEN) -/* --- Emscripten --- */ -#if defined(DUK_COMPILING_DUKTAPE) -#if !defined(_POSIX_C_SOURCE) -#define _POSIX_C_SOURCE 200809L -#endif -#if !defined(_GNU_SOURCE) -#define _GNU_SOURCE /* e.g. getdate_r */ -#endif -#if !defined(_XOPEN_SOURCE) -#define _XOPEN_SOURCE /* e.g. strptime */ -#endif -#endif /* DUK_COMPILING_DUKTAPE */ - -#include -#if defined(DUK_F_BCC) -/* no endian.h */ -#else -#include -#endif /* DUK_F_BCC */ -#include -#include -#include -#include - -#define DUK_USE_DATE_NOW_GETTIMEOFDAY -#define DUK_USE_DATE_TZO_GMTIME_R -#define DUK_USE_DATE_PRS_STRPTIME -#define DUK_USE_DATE_FMT_STRFTIME - -#define DUK_USE_OS_STRING "emscripten" -#elif defined(DUK_F_ANDROID) -/* --- Android --- */ -#if defined(DUK_COMPILING_DUKTAPE) -#if !defined(_POSIX_C_SOURCE) -#define _POSIX_C_SOURCE 200809L -#endif -#if !defined(_GNU_SOURCE) -#define _GNU_SOURCE /* e.g. getdate_r */ -#endif -#if !defined(_XOPEN_SOURCE) -#define _XOPEN_SOURCE /* e.g. strptime */ -#endif -#endif /* DUK_COMPILING_DUKTAPE */ - -#include -#if defined(DUK_F_BCC) -/* no endian.h or stdint.h */ -#else -#include -#include -#endif /* DUK_F_BCC */ -#include -#include -#include - -#define DUK_USE_DATE_NOW_GETTIMEOFDAY -#define DUK_USE_DATE_TZO_GMTIME_R -#define DUK_USE_DATE_PRS_STRPTIME -#define DUK_USE_DATE_FMT_STRFTIME - -#if 0 /* XXX: safe condition? */ -#define DUK_USE_GET_MONOTONIC_TIME_CLOCK_GETTIME -#endif - -#define DUK_USE_OS_STRING "android" -#elif defined(DUK_F_LINUX) -/* --- Linux --- */ -#if defined(DUK_COMPILING_DUKTAPE) -#if !defined(_POSIX_C_SOURCE) -#define _POSIX_C_SOURCE 200809L -#endif -#if !defined(_GNU_SOURCE) -#define _GNU_SOURCE /* e.g. getdate_r */ -#endif -#if !defined(_XOPEN_SOURCE) -#define _XOPEN_SOURCE /* e.g. strptime */ -#endif -#endif /* DUK_COMPILING_DUKTAPE */ - -#include -#if defined(DUK_F_BCC) -/* no endian.h or stdint.h */ -#else -#include -#include -#endif /* DUK_F_BCC */ -#include -#include -#include - -#define DUK_USE_DATE_NOW_GETTIMEOFDAY -#define DUK_USE_DATE_TZO_GMTIME_R -#define DUK_USE_DATE_PRS_STRPTIME -#define DUK_USE_DATE_FMT_STRFTIME - -#if 0 /* XXX: safe condition? */ -#define DUK_USE_GET_MONOTONIC_TIME_CLOCK_GETTIME -#endif - -#define DUK_USE_OS_STRING "linux" -#elif defined(DUK_F_SUN) -/* --- Solaris --- */ -#define DUK_USE_DATE_NOW_GETTIMEOFDAY -#define DUK_USE_DATE_TZO_GMTIME_R -#define DUK_USE_DATE_PRS_STRPTIME -#define DUK_USE_DATE_FMT_STRFTIME - -#include -#if defined(DUK_F_OLD_SOLARIS) -/* Old Solaris with no endian.h, stdint.h */ -#define DUK_F_NO_STDINT_H -#if !defined(DUK_USE_BYTEORDER) -#define DUK_USE_BYTEORDER 3 -#endif -#else /* DUK_F_OLD_SOLARIS */ -#include -#endif /* DUK_F_OLD_SOLARIS */ - -#include -#include -#include - -#define DUK_USE_OS_STRING "solaris" -#elif defined(DUK_F_AIX) -/* --- AIX --- */ -#if !defined(DUK_USE_BYTEORDER) -#define DUK_USE_BYTEORDER 3 -#endif -#define DUK_USE_DATE_NOW_GETTIMEOFDAY -#define DUK_USE_DATE_TZO_GMTIME_R -#define DUK_USE_DATE_PRS_STRPTIME -#define DUK_USE_DATE_FMT_STRFTIME -#include -#include -#include - -#define DUK_USE_OS_STRING "aix" -#elif defined(DUK_F_HPUX) -/* --- HPUX --- */ -#define DUK_F_NO_STDINT_H -#if !defined(DUK_USE_BYTEORDER) -#define DUK_USE_BYTEORDER 3 -#endif -#define DUK_USE_DATE_NOW_GETTIMEOFDAY -#define DUK_USE_DATE_TZO_GMTIME_R -#define DUK_USE_DATE_PRS_STRPTIME -#define DUK_USE_DATE_FMT_STRFTIME -#include -#include -#include - -#define DUK_USE_OS_STRING "hpux" -#elif defined(DUK_F_POSIX) -/* --- Generic POSIX --- */ -#define DUK_USE_DATE_NOW_GETTIMEOFDAY -#define DUK_USE_DATE_TZO_GMTIME_R -#define DUK_USE_DATE_PRS_STRPTIME -#define DUK_USE_DATE_FMT_STRFTIME -#include -#include -#include -#include -#include - -#define DUK_USE_OS_STRING "posix" -#elif defined(DUK_F_CYGWIN) -/* --- Cygwin --- */ -/* don't use strptime() for now */ -#define DUK_USE_DATE_NOW_GETTIMEOFDAY -#define DUK_USE_DATE_TZO_GMTIME_R -#define DUK_USE_DATE_FMT_STRFTIME -#include -#include -#include -#include -#include - -#define DUK_JMPBUF_TYPE jmp_buf -#define DUK_SETJMP(jb) _setjmp((jb)) -#define DUK_LONGJMP(jb) _longjmp((jb), 1) - -#define DUK_USE_OS_STRING "windows" -#elif defined(DUK_F_UNIX) -/* --- Generic UNIX --- */ -#define DUK_USE_DATE_NOW_GETTIMEOFDAY -#define DUK_USE_DATE_TZO_GMTIME_R -#define DUK_USE_DATE_PRS_STRPTIME -#define DUK_USE_DATE_FMT_STRFTIME -#include -#include -#define DUK_USE_OS_STRING "unknown" -#else -/* --- Generic fallback --- */ -/* The most portable current time provider is time(), but it only has a - * one second resolution. - */ -#define DUK_USE_DATE_NOW_TIME - -/* The most portable way to figure out local time offset is gmtime(), - * but it's not thread safe so use with caution. - */ -#define DUK_USE_DATE_TZO_GMTIME - -/* Avoid custom date parsing and formatting for portability. */ -#undef DUK_USE_DATE_PRS_STRPTIME -#undef DUK_USE_DATE_FMT_STRFTIME - -/* Rely on C89 headers only; time.h must be here. */ -#include - -#define DUK_USE_OS_STRING "unknown" -#endif /* autodetect platform */ - -/* Shared includes: C89 */ -#include -#include -#include -#include /* varargs */ -#include -#include /* e.g. ptrdiff_t */ -#include -#include - -/* date.h is omitted, and included per platform */ - -/* Shared includes: stdint.h is C99 */ -#if defined(DUK_F_NO_STDINT_H) -/* stdint.h not available */ -#else -/* Technically C99 (C++11) but found in many systems. On some systems - * __STDC_LIMIT_MACROS and __STDC_CONSTANT_MACROS must be defined before - * including stdint.h (see above). - */ -#include -#endif - -/* is only included if needed, based on DUK_USE_xxx flags. */ - -/* - * Architecture autodetection - */ - -#if defined(DUK_F_X86) -/* --- x86 --- */ -#define DUK_USE_ARCH_STRING "x86" -#if !defined(DUK_USE_BYTEORDER) -#define DUK_USE_BYTEORDER 1 -#endif - -#define DUK_USE_PACKED_TVAL - -/* FreeBSD, -m32, and clang prior to 5.0 has union aliasing issues which - * break duk_tval copying. Disable packed duk_tval automatically. - */ -#if defined(DUK_F_FREEBSD) && defined(DUK_F_X86) && \ - defined(__clang__) && defined(__clang_major__) && (__clang_major__ < 5) -#undef DUK_USE_PACKED_TVAL -#endif -#define DUK_F_PACKED_TVAL_PROVIDED -#elif defined(DUK_F_X64) -/* --- x64 --- */ -#define DUK_USE_ARCH_STRING "x64" -#if !defined(DUK_USE_BYTEORDER) -#define DUK_USE_BYTEORDER 1 -#endif -#undef DUK_USE_PACKED_TVAL -#define DUK_F_PACKED_TVAL_PROVIDED -#elif defined(DUK_F_X32) -/* --- x32 --- */ -#define DUK_USE_ARCH_STRING "x32" -#if !defined(DUK_USE_BYTEORDER) -#define DUK_USE_BYTEORDER 1 -#endif -#define DUK_USE_PACKED_TVAL -#define DUK_F_PACKED_TVAL_PROVIDED -#elif defined(DUK_F_ARM32) -/* --- ARM 32-bit --- */ -#define DUK_USE_ARCH_STRING "arm32" -/* Byte order varies, so rely on autodetect. */ -#define DUK_USE_PACKED_TVAL -#define DUK_F_PACKED_TVAL_PROVIDED -#elif defined(DUK_F_ARM64) -/* --- ARM 64-bit --- */ -#define DUK_USE_ARCH_STRING "arm64" -/* Byte order varies, so rely on autodetect. */ -#undef DUK_USE_PACKED_TVAL -#define DUK_F_PACKED_TVAL_PROVIDED -#elif defined(DUK_F_MIPS32) -/* --- MIPS 32-bit --- */ -#define DUK_USE_ARCH_STRING "mips32" -/* MIPS byte order varies so rely on autodetection. */ -#define DUK_USE_PACKED_TVAL -#define DUK_F_PACKED_TVAL_PROVIDED -#elif defined(DUK_F_MIPS64) -/* --- MIPS 64-bit --- */ -#define DUK_USE_ARCH_STRING "mips64" -/* MIPS byte order varies so rely on autodetection. */ -#undef DUK_USE_PACKED_TVAL -#define DUK_F_PACKED_TVAL_PROVIDED -#elif defined(DUK_F_PPC32) -/* --- PowerPC 32-bit --- */ -#define DUK_USE_ARCH_STRING "ppc32" -#if !defined(DUK_USE_BYTEORDER) -#define DUK_USE_BYTEORDER 3 -#endif -#define DUK_USE_PACKED_TVAL -#define DUK_F_PACKED_TVAL_PROVIDED -#elif defined(DUK_F_PPC64) -/* --- PowerPC 64-bit --- */ -#define DUK_USE_ARCH_STRING "ppc64" -/* No forced byteorder (both little and big endian are possible). */ -#undef DUK_USE_PACKED_TVAL -#define DUK_F_PACKED_TVAL_PROVIDED -#elif defined(DUK_F_SPARC32) -/* --- SPARC 32-bit --- */ -#define DUK_USE_ARCH_STRING "sparc32" -/* SPARC byte order varies so rely on autodetection. */ -#define DUK_USE_PACKED_TVAL -#define DUK_F_PACKED_TVAL_PROVIDED -#elif defined(DUK_F_SPARC64) -/* --- SPARC 64-bit --- */ -#define DUK_USE_ARCH_STRING "sparc64" -/* SPARC byte order varies so rely on autodetection. */ -#undef DUK_USE_PACKED_TVAL -#define DUK_F_PACKED_TVAL_PROVIDED -#elif defined(DUK_F_RISCV32) -/* --- RISC-V 32-bit --- */ -#define DUK_USE_ARCH_STRING "riscv32" -#define DUK_USE_BYTEORDER 1 -#define DUK_USE_PACKED_TVAL -#define DUK_F_PACKED_TVAL_PROVIDED -#elif defined(DUK_F_RISCV64) -/* --- RISC-V 64-bit --- */ -#define DUK_USE_ARCH_STRING "riscv64" -#define DUK_USE_BYTEORDER 1 -#undef DUK_USE_PACKED_TVAL -#define DUK_F_PACKED_TVAL_PROVIDED -#elif defined(DUK_F_SUPERH) -/* --- SuperH --- */ -#define DUK_USE_ARCH_STRING "sh" -/* Byte order varies, rely on autodetection. */ -#define DUK_USE_PACKED_TVAL -#define DUK_F_PACKED_TVAL_PROVIDED -#elif defined(DUK_F_M68K) -/* --- Motorola 68k --- */ -#define DUK_USE_ARCH_STRING "m68k" -#if !defined(DUK_USE_BYTEORDER) -#define DUK_USE_BYTEORDER 3 -#endif -#define DUK_USE_PACKED_TVAL -#define DUK_F_PACKED_TVAL_PROVIDED -#elif defined(DUK_F_EMSCRIPTEN) -/* --- Emscripten --- */ -#define DUK_USE_ARCH_STRING "emscripten" -#if !defined(DUK_USE_BYTEORDER) -#define DUK_USE_BYTEORDER 1 -#endif -#undef DUK_USE_PACKED_TVAL -#define DUK_F_PACKED_TVAL_PROVIDED -#else -/* --- Generic --- */ -/* These are necessary wild guesses. */ -#define DUK_USE_ARCH_STRING "generic" -/* Rely on autodetection for byte order, alignment, and packed tval. */ -#endif /* autodetect architecture */ - -/* - * Compiler autodetection - */ - -#if defined(DUK_F_CLANG) -/* --- Clang --- */ -#if defined(DUK_F_C99) || defined(DUK_F_CPP11) -/* C99 / C++11 and above: rely on va_copy() which is required. */ -#define DUK_VA_COPY(dest,src) va_copy(dest,src) -#else -/* Clang: assume we have __va_copy() in non-C99 mode. */ -#define DUK_VA_COPY(dest,src) __va_copy(dest,src) -#endif - -#define DUK_NORETURN(decl) decl __attribute__((noreturn)) - -#if defined(__clang__) && defined(__has_builtin) -#if __has_builtin(__builtin_unreachable) -#define DUK_UNREACHABLE() do { __builtin_unreachable(); } while (0) -#endif -#endif - -#define DUK_USE_BRANCH_HINTS -#define DUK_LIKELY(x) __builtin_expect((x), 1) -#define DUK_UNLIKELY(x) __builtin_expect((x), 0) -#if defined(__clang__) && defined(__has_builtin) -#if __has_builtin(__builtin_unpredictable) -#define DUK_UNPREDICTABLE(x) __builtin_unpredictable((x)) -#endif -#endif - -#if defined(DUK_F_C99) || defined(DUK_F_CPP11) -#define DUK_NOINLINE __attribute__((noinline)) -#define DUK_INLINE inline -#define DUK_ALWAYS_INLINE inline __attribute__((always_inline)) -#endif - -/* DUK_HOT */ -/* DUK_COLD */ - -#if defined(DUK_F_DLL_BUILD) && defined(DUK_F_WINDOWS) -/* MSVC dllexport/dllimport: appropriate __declspec depends on whether we're - * compiling Duktape or the application. - */ -#if defined(DUK_COMPILING_DUKTAPE) -#define DUK_EXTERNAL_DECL extern __declspec(dllexport) -#define DUK_EXTERNAL __declspec(dllexport) -#else -#define DUK_EXTERNAL_DECL extern __declspec(dllimport) -#define DUK_EXTERNAL should_not_happen -#endif -#if defined(DUK_SINGLE_FILE) -#define DUK_INTERNAL_DECL static -#define DUK_INTERNAL static -#else -#define DUK_INTERNAL_DECL extern -#define DUK_INTERNAL /*empty*/ -#endif -#define DUK_LOCAL_DECL static -#define DUK_LOCAL static -#else -#define DUK_EXTERNAL_DECL __attribute__ ((visibility("default"))) extern -#define DUK_EXTERNAL __attribute__ ((visibility("default"))) -#if defined(DUK_SINGLE_FILE) -#if (defined(DUK_F_GCC_VERSION) && DUK_F_GCC_VERSION >= 30101) || defined(DUK_F_CLANG) -/* Minimize warnings for unused internal functions with GCC >= 3.1.1 and - * Clang. Based on documentation it should suffice to have the attribute - * in the declaration only, but in practice some warnings are generated unless - * the attribute is also applied to the definition. - */ -#define DUK_INTERNAL_DECL static __attribute__ ((unused)) -#define DUK_INTERNAL static __attribute__ ((unused)) -#else -#define DUK_INTERNAL_DECL static -#define DUK_INTERNAL static -#endif -#else -#if (defined(DUK_F_GCC_VERSION) && DUK_F_GCC_VERSION >= 30101) || defined(DUK_F_CLANG) -#define DUK_INTERNAL_DECL __attribute__ ((visibility("hidden"))) __attribute__ ((unused)) extern -#define DUK_INTERNAL __attribute__ ((visibility("hidden"))) __attribute__ ((unused)) -#else -#define DUK_INTERNAL_DECL __attribute__ ((visibility("hidden"))) extern -#define DUK_INTERNAL __attribute__ ((visibility("hidden"))) -#endif -#endif -#define DUK_LOCAL_DECL static -#define DUK_LOCAL static -#endif - -#if defined(DUK_F_CPP) -#define DUK_USE_COMPILER_STRING "clang" -#else -#define DUK_USE_COMPILER_STRING "clang" -#endif - -#undef DUK_USE_VARIADIC_MACROS -#if defined(DUK_F_C99) || defined(DUK_F_CPP11) -#define DUK_USE_VARIADIC_MACROS -#endif - -#define DUK_USE_UNION_INITIALIZERS - -#undef DUK_USE_FLEX_C99 -#undef DUK_USE_FLEX_ZEROSIZE -#undef DUK_USE_FLEX_ONESIZE -#if defined(DUK_F_C99) -#define DUK_USE_FLEX_C99 -#else -#define DUK_USE_FLEX_ZEROSIZE -#endif - -#define DUK_USE_CLANG_PRAGMAS -#define DUK_USE_PACK_CLANG_ATTR - -#if defined(__clang__) && defined(__has_builtin) -#if __has_builtin(__builtin_bswap64) -#define DUK_BSWAP64(x) ((duk_uint64_t) __builtin_bswap64((duk_uint64_t) (x))) -#endif -#if __has_builtin(__builtin_bswap32) -#define DUK_BSWAP32(x) ((duk_uint32_t) __builtin_bswap32((duk_uint32_t) (x))) -#endif -#if __has_builtin(__builtin_bswap16) -#define DUK_BSWAP16(x) ((duk_uint16_t) __builtin_bswap16((duk_uint16_t) (x))) -#endif -#endif -#elif defined(DUK_F_GCC) -/* --- GCC --- */ -#if defined(DUK_F_C99) || defined(DUK_F_CPP11) -/* C99 / C++11 and above: rely on va_copy() which is required. */ -#define DUK_VA_COPY(dest,src) va_copy(dest,src) -#else -/* GCC: assume we have __va_copy() in non-C99 mode. */ -#define DUK_VA_COPY(dest,src) __va_copy(dest,src) -#endif - -#if defined(DUK_F_GCC_VERSION) && (DUK_F_GCC_VERSION >= 20500L) && (DUK_F_GCC_VERSION < 50000L) -/* Since gcc-2.5. - * - * Disabled temporarily in GCC 5+ because of an unresolved noreturn-related - * issue: https://github.com/svaarala/duktape/issues/2155. - */ -#define DUK_NORETURN(decl) decl __attribute__((noreturn)) -#endif - -#if defined(DUK_F_GCC_VERSION) && (DUK_F_GCC_VERSION >= 40500L) -/* Since gcc-4.5. */ -#define DUK_UNREACHABLE() do { __builtin_unreachable(); } while (0) -#endif - -#define DUK_USE_BRANCH_HINTS -#if defined(DUK_F_GCC_VERSION) && (DUK_F_GCC_VERSION >= 40500L) -/* GCC: test not very accurate; enable only in relatively recent builds - * because of bugs in gcc-4.4 (http://lists.debian.org/debian-gcc/2010/04/msg00000.html) - */ -#define DUK_LIKELY(x) __builtin_expect((x), 1) -#define DUK_UNLIKELY(x) __builtin_expect((x), 0) -#endif -/* XXX: equivalent of clang __builtin_unpredictable? */ - -#if (defined(DUK_F_C99) || defined(DUK_F_CPP11)) && \ - defined(DUK_F_GCC_VERSION) && (DUK_F_GCC_VERSION >= 30101) -#define DUK_NOINLINE __attribute__((noinline)) -#define DUK_INLINE inline -#define DUK_ALWAYS_INLINE inline __attribute__((always_inline)) -#endif - -#if (defined(DUK_F_C99) || defined(DUK_F_CPP11)) && \ - defined(DUK_F_GCC_VERSION) && (DUK_F_GCC_VERSION >= 40300) -#define DUK_HOT __attribute__((hot)) -#define DUK_COLD __attribute__((cold)) -#endif - -#if defined(DUK_F_DLL_BUILD) && defined(DUK_F_WINDOWS) -/* MSVC dllexport/dllimport: appropriate __declspec depends on whether we're - * compiling Duktape or the application. - */ -#if defined(DUK_COMPILING_DUKTAPE) -#define DUK_EXTERNAL_DECL extern __declspec(dllexport) -#define DUK_EXTERNAL __declspec(dllexport) -#else -#define DUK_EXTERNAL_DECL extern __declspec(dllimport) -#define DUK_EXTERNAL should_not_happen -#endif -#if defined(DUK_SINGLE_FILE) -#define DUK_INTERNAL_DECL static -#define DUK_INTERNAL static -#else -#define DUK_INTERNAL_DECL extern -#define DUK_INTERNAL /*empty*/ -#endif -#define DUK_LOCAL_DECL static -#define DUK_LOCAL static -#elif defined(DUK_F_GCC_VERSION) && (DUK_F_GCC_VERSION >= 40000) -#define DUK_EXTERNAL_DECL __attribute__ ((visibility("default"))) extern -#define DUK_EXTERNAL __attribute__ ((visibility("default"))) -#if defined(DUK_SINGLE_FILE) -#if (defined(DUK_F_GCC_VERSION) && DUK_F_GCC_VERSION >= 30101) || defined(DUK_F_CLANG) -/* Minimize warnings for unused internal functions with GCC >= 3.1.1 and - * Clang. Based on documentation it should suffice to have the attribute - * in the declaration only, but in practice some warnings are generated unless - * the attribute is also applied to the definition. - */ -#define DUK_INTERNAL_DECL static __attribute__ ((unused)) -#define DUK_INTERNAL static __attribute__ ((unused)) -#else -#define DUK_INTERNAL_DECL static -#define DUK_INTERNAL static -#endif -#else -#if (defined(DUK_F_GCC_VERSION) && DUK_F_GCC_VERSION >= 30101) || defined(DUK_F_CLANG) -#define DUK_INTERNAL_DECL __attribute__ ((visibility("hidden"))) __attribute__ ((unused)) extern -#define DUK_INTERNAL __attribute__ ((visibility("hidden"))) __attribute__ ((unused)) -#else -#define DUK_INTERNAL_DECL __attribute__ ((visibility("hidden"))) extern -#define DUK_INTERNAL __attribute__ ((visibility("hidden"))) -#endif -#endif -#define DUK_LOCAL_DECL static -#define DUK_LOCAL static -#endif - -#if defined(DUK_F_MINGW) -#if defined(DUK_F_CPP) -#define DUK_USE_COMPILER_STRING "mingw++" -#else -#define DUK_USE_COMPILER_STRING "mingw" -#endif -#else -#if defined(DUK_F_CPP) -#define DUK_USE_COMPILER_STRING "g++" -#else -#define DUK_USE_COMPILER_STRING "gcc" -#endif -#endif - -#undef DUK_USE_VARIADIC_MACROS -#if defined(DUK_F_C99) || (defined(DUK_F_CPP11) && defined(__GNUC__)) -#define DUK_USE_VARIADIC_MACROS -#endif - -#define DUK_USE_UNION_INITIALIZERS - -#undef DUK_USE_FLEX_C99 -#undef DUK_USE_FLEX_ZEROSIZE -#undef DUK_USE_FLEX_ONESIZE -#if defined(DUK_F_C99) -#define DUK_USE_FLEX_C99 -#else -#define DUK_USE_FLEX_ZEROSIZE -#endif - -/* Since 4.6 one can '#pragma GCC diagnostic push/pop'. */ -#if defined(DUK_F_GCC_VERSION) && (DUK_F_GCC_VERSION >= 40600) -#define DUK_USE_GCC_PRAGMAS -#else -#undef DUK_USE_GCC_PRAGMAS -#endif - -#define DUK_USE_PACK_GCC_ATTR - -/* Availability varies based on platform (between GCC 4.4 and 4.8), and there - * are apparently some bugs in GCC 4.x. Check for GCC 5.0 before enabling - * these to be safe. - */ -#if defined(DUK_F_GCC_VERSION) && (DUK_F_GCC_VERSION >= 50000L) -#define DUK_BSWAP64(x) ((duk_uint64_t) __builtin_bswap64((duk_uint64_t) (x))) -#define DUK_BSWAP32(x) ((duk_uint32_t) __builtin_bswap32((duk_uint32_t) (x))) -#define DUK_BSWAP16(x) ((duk_uint16_t) __builtin_bswap16((duk_uint16_t) (x))) -#endif -#elif defined(DUK_F_MSVC) -/* --- MSVC --- */ -/* http://msdn.microsoft.com/en-us/library/aa235362(VS.60).aspx */ -#define DUK_NORETURN(decl) __declspec(noreturn) decl - -/* XXX: DUK_UNREACHABLE for msvc? */ - -#undef DUK_USE_BRANCH_HINTS - -/* XXX: DUK_LIKELY, DUK_UNLIKELY for msvc? */ -/* XXX: DUK_NOINLINE, DUK_INLINE, DUK_ALWAYS_INLINE for msvc? */ - -#if defined(DUK_F_DLL_BUILD) && defined(DUK_F_WINDOWS) -/* MSVC dllexport/dllimport: appropriate __declspec depends on whether we're - * compiling Duktape or the application. - */ -#if defined(DUK_COMPILING_DUKTAPE) -#define DUK_EXTERNAL_DECL extern __declspec(dllexport) -#define DUK_EXTERNAL __declspec(dllexport) -#else -#define DUK_EXTERNAL_DECL extern __declspec(dllimport) -#define DUK_EXTERNAL should_not_happen -#endif -#if defined(DUK_SINGLE_FILE) -#define DUK_INTERNAL_DECL static -#define DUK_INTERNAL static -#else -#define DUK_INTERNAL_DECL extern -#define DUK_INTERNAL /*empty*/ -#endif -#define DUK_LOCAL_DECL static -#define DUK_LOCAL static -#endif - -#if defined(DUK_F_CPP) -#define DUK_USE_COMPILER_STRING "msvc++" -#else -#define DUK_USE_COMPILER_STRING "msvc" -#endif - -#undef DUK_USE_VARIADIC_MACROS -#if defined(DUK_F_C99) -#define DUK_USE_VARIADIC_MACROS -#elif defined(_MSC_VER) && (_MSC_VER >= 1400) -/* VS2005+ should have variadic macros even when they're not C99. */ -#define DUK_USE_VARIADIC_MACROS -#endif - -#undef DUK_USE_UNION_INITIALIZERS -#if defined(_MSC_VER) && (_MSC_VER >= 1800) -/* VS2013+ supports union initializers but there's a bug involving union-inside-struct: - * https://connect.microsoft.com/VisualStudio/feedback/details/805981 - * The bug was fixed (at least) in VS2015 so check for VS2015 for now: - * https://blogs.msdn.microsoft.com/vcblog/2015/07/01/c-compiler-front-end-fixes-in-vs2015/ - * Manually tested using VS2013, CL reports 18.00.31101, so enable for VS2013 too. - */ -#define DUK_USE_UNION_INITIALIZERS -#endif - -#undef DUK_USE_FLEX_C99 -#undef DUK_USE_FLEX_ZEROSIZE -#undef DUK_USE_FLEX_ONESIZE -#if defined(DUK_F_C99) -#define DUK_USE_FLEX_C99 -#else -#define DUK_USE_FLEX_ZEROSIZE -#endif - -#undef DUK_USE_GCC_PRAGMAS - -#define DUK_USE_PACK_MSVC_PRAGMA - -/* These have been tested from VS2008 onwards; may work in older VS versions - * too but not enabled by default. - */ -#if defined(_MSC_VER) && (_MSC_VER >= 1500) -#define DUK_NOINLINE __declspec(noinline) -#define DUK_INLINE __inline -#define DUK_ALWAYS_INLINE __forceinline -#endif - -#if defined(_MSC_VER) && (_MSC_VER >= 1900) -#define DUK_SNPRINTF snprintf -#define DUK_VSNPRINTF vsnprintf -#else -/* (v)snprintf() is missing before MSVC 2015. Note that _(v)snprintf() does - * NOT NUL terminate on truncation, but Duktape code never assumes that. - * http://stackoverflow.com/questions/2915672/snprintf-and-visual-studio-2010 - */ -#define DUK_SNPRINTF _snprintf -#define DUK_VSNPRINTF _vsnprintf -#endif - -/* Avoid warning when doing DUK_UNREF(some_function). */ -#if defined(_MSC_VER) && (_MSC_VER < 1500) -#pragma warning(disable: 4100 4101 4550 4551) -#define DUK_UNREF(x) -#else -#define DUK_UNREF(x) do { __pragma(warning(suppress:4100 4101 4550 4551)) (x); } while (0) -#endif - -/* Older versions of MSVC don't support the LL/ULL suffix. */ -#define DUK_U64_CONSTANT(x) x##ui64 -#define DUK_I64_CONSTANT(x) x##i64 -#elif defined(DUK_F_EMSCRIPTEN) -/* --- Emscripten --- */ -#define DUK_NORETURN(decl) decl __attribute__((noreturn)) - -#if defined(__clang__) && defined(__has_builtin) -#if __has_builtin(__builtin_unreachable) -#define DUK_UNREACHABLE() do { __builtin_unreachable(); } while (0) -#endif -#endif - -#define DUK_USE_BRANCH_HINTS -#define DUK_LIKELY(x) __builtin_expect((x), 1) -#define DUK_UNLIKELY(x) __builtin_expect((x), 0) -#if defined(__clang__) && defined(__has_builtin) -#if __has_builtin(__builtin_unpredictable) -#define DUK_UNPREDICTABLE(x) __builtin_unpredictable((x)) -#endif -#endif - -#if defined(DUK_F_C99) || defined(DUK_F_CPP11) -#define DUK_NOINLINE __attribute__((noinline)) -#define DUK_INLINE inline -#define DUK_ALWAYS_INLINE inline __attribute__((always_inline)) -#endif - -#define DUK_EXTERNAL_DECL __attribute__ ((visibility("default"))) extern -#define DUK_EXTERNAL __attribute__ ((visibility("default"))) -#if defined(DUK_SINGLE_FILE) -#if (defined(DUK_F_GCC_VERSION) && DUK_F_GCC_VERSION >= 30101) || defined(DUK_F_CLANG) -/* Minimize warnings for unused internal functions with GCC >= 3.1.1 and - * Clang. Based on documentation it should suffice to have the attribute - * in the declaration only, but in practice some warnings are generated unless - * the attribute is also applied to the definition. - */ -#define DUK_INTERNAL_DECL static __attribute__ ((unused)) -#define DUK_INTERNAL static __attribute__ ((unused)) -#else -#define DUK_INTERNAL_DECL static -#define DUK_INTERNAL static -#endif -#else -#if (defined(DUK_F_GCC_VERSION) && DUK_F_GCC_VERSION >= 30101) || defined(DUK_F_CLANG) -#define DUK_INTERNAL_DECL __attribute__ ((visibility("hidden"))) __attribute__ ((unused)) extern -#define DUK_INTERNAL __attribute__ ((visibility("hidden"))) __attribute__ ((unused)) -#else -#define DUK_INTERNAL_DECL __attribute__ ((visibility("hidden"))) extern -#define DUK_INTERNAL __attribute__ ((visibility("hidden"))) -#endif -#endif -#define DUK_LOCAL_DECL static -#define DUK_LOCAL static - -#define DUK_USE_COMPILER_STRING "emscripten" - -#undef DUK_USE_VARIADIC_MACROS -#if defined(DUK_F_C99) || defined(DUK_F_CPP11) -#define DUK_USE_VARIADIC_MACROS -#endif - -#define DUK_USE_UNION_INITIALIZERS - -#undef DUK_USE_FLEX_C99 -#undef DUK_USE_FLEX_ZEROSIZE -#undef DUK_USE_FLEX_ONESIZE -#if defined(DUK_F_C99) -#define DUK_USE_FLEX_C99 -#else -#define DUK_USE_FLEX_ZEROSIZE -#endif - -#undef DUK_USE_GCC_PRAGMAS -#define DUK_USE_PACK_CLANG_ATTR -#elif defined(DUK_F_TINYC) -/* --- TinyC --- */ -#undef DUK_USE_BRANCH_HINTS - -#if defined(DUK_F_CPP) -#define DUK_USE_COMPILER_STRING "tinyc++" -#else -#define DUK_USE_COMPILER_STRING "tinyc" -#endif - -/* http://bellard.org/tcc/tcc-doc.html#SEC7 */ -#define DUK_USE_VARIADIC_MACROS - -#define DUK_USE_UNION_INITIALIZERS - -/* Most portable, wastes space */ -#define DUK_USE_FLEX_ONESIZE - -/* Most portable, potentially wastes space */ -#define DUK_USE_PACK_DUMMY_MEMBER -#elif defined(DUK_F_VBCC) -/* --- VBCC --- */ -#undef DUK_USE_BRANCH_HINTS - -#if defined(DUK_F_CPP) -#define DUK_USE_COMPILER_STRING "vbcc-c++" -#else -#define DUK_USE_COMPILER_STRING "vbcc" -#endif - -#undef DUK_USE_VARIADIC_MACROS -#if defined(DUK_F_C99) || defined(DUK_F_CPP11) -#define DUK_USE_VARIADIC_MACROS -#endif - -/* VBCC supports C99 so check only for C99 for union initializer support. - * Designated union initializers would possibly work even without a C99 check. - */ -#undef DUK_USE_UNION_INITIALIZERS -#if defined(DUK_F_C99) -#define DUK_USE_UNION_INITIALIZERS -#endif - -#define DUK_USE_FLEX_ZEROSIZE -#define DUK_USE_PACK_DUMMY_MEMBER -#elif defined(DUK_F_BCC) -/* --- Bruce's C compiler --- */ -#undef DUK_USE_BRANCH_HINTS - -#if defined(DUK_F_CPP) -#define DUK_USE_COMPILER_STRING "bcc++" -#else -#define DUK_USE_COMPILER_STRING "bcc" -#endif - -/* Most portable */ -#undef DUK_USE_VARIADIC_MACROS - -/* Most portable, wastes space */ -#undef DUK_USE_UNION_INITIALIZERS - -/* Most portable, wastes space */ -#define DUK_USE_FLEX_ONESIZE - -/* Most portable, potentially wastes space */ -#define DUK_USE_PACK_DUMMY_MEMBER - -/* BCC, assume we're on x86. */ -#if !defined(DUK_USE_BYTEORDER) -#define DUK_USE_BYTEORDER 1 -#endif -#else -/* --- Generic --- */ -#undef DUK_USE_BRANCH_HINTS - -#if defined(DUK_F_CPP) -#define DUK_USE_COMPILER_STRING "generic-c++" -#else -#define DUK_USE_COMPILER_STRING "generic" -#endif - -#undef DUK_USE_VARIADIC_MACROS -#if defined(DUK_F_C99) || defined(DUK_F_CPP11) -#define DUK_USE_VARIADIC_MACROS -#endif - -/* C++ doesn't have standard designated union initializers ({ .foo = 1 }). */ -#undef DUK_USE_UNION_INITIALIZERS -#if defined(DUK_F_C99) -#define DUK_USE_UNION_INITIALIZERS -#endif - -/* Most portable, wastes space */ -#define DUK_USE_FLEX_ONESIZE - -/* Most portable, potentially wastes space */ -#define DUK_USE_PACK_DUMMY_MEMBER -#endif /* autodetect compiler */ - -/* uclibc */ -#if defined(__UCLIBC__) -#define DUK_F_UCLIBC -#endif - -/* - * Wrapper typedefs and constants for integer types, also sanity check types. - * - * C99 typedefs are quite good but not always available, and we want to avoid - * forcibly redefining the C99 typedefs. So, there are Duktape wrappers for - * all C99 typedefs and Duktape code should only use these typedefs. Type - * detection when C99 is not supported is best effort and may end up detecting - * some types incorrectly. - * - * Pointer sizes are a portability problem: pointers to different types may - * have a different size and function pointers are very difficult to manage - * portably. - * - * http://en.wikipedia.org/wiki/C_data_types#Fixed-width_integer_types - * - * Note: there's an interesting corner case when trying to define minimum - * signed integer value constants which leads to the current workaround of - * defining e.g. -0x80000000 as (-0x7fffffffL - 1L). See doc/code-issues.txt - * for a longer discussion. - * - * Note: avoid typecasts and computations in macro integer constants as they - * can then no longer be used in macro relational expressions (such as - * #if DUK_SIZE_MAX < 0xffffffffUL). There is internal code which relies on - * being able to compare DUK_SIZE_MAX against a limit. - */ - -/* XXX: add feature options to force basic types from outside? */ - -#if !defined(INT_MAX) -#error INT_MAX not defined -#endif - -/* Check that architecture is two's complement, standard C allows e.g. - * INT_MIN to be -2**31+1 (instead of -2**31). - */ -#if defined(INT_MAX) && defined(INT_MIN) -#if INT_MAX != -(INT_MIN + 1) -#error platform does not seem complement of two -#endif -#else -#error cannot check complement of two -#endif - -/* Pointer size determination based on __WORDSIZE or architecture when - * that's not available. - */ -#if defined(DUK_F_X86) || defined(DUK_F_X32) || \ - defined(DUK_F_M68K) || defined(DUK_F_PPC32) || \ - defined(DUK_F_BCC) || \ - (defined(__WORDSIZE) && (__WORDSIZE == 32)) || \ - ((defined(DUK_F_OLD_SOLARIS) || defined(DUK_F_AIX) || \ - defined(DUK_F_HPUX)) && defined(_ILP32)) || \ - defined(DUK_F_ARM32) -#define DUK_F_32BIT_PTRS -#elif defined(DUK_F_X64) || \ - (defined(__WORDSIZE) && (__WORDSIZE == 64)) || \ - ((defined(DUK_F_OLD_SOLARIS) || defined(DUK_F_AIX) || \ - defined(DUK_F_HPUX)) && defined(_LP64)) || \ - defined(DUK_F_ARM64) -#define DUK_F_64BIT_PTRS -#else -/* not sure, not needed with C99 anyway */ -#endif - -/* Intermediate define for 'have inttypes.h' */ -#undef DUK_F_HAVE_INTTYPES -#if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) && \ - !(defined(DUK_F_AMIGAOS) && defined(DUK_F_VBCC)) -/* vbcc + AmigaOS has C99 but no inttypes.h */ -#define DUK_F_HAVE_INTTYPES -#elif defined(__cplusplus) && (__cplusplus >= 201103L) -/* C++11 apparently ratified stdint.h */ -#define DUK_F_HAVE_INTTYPES -#endif - -/* Basic integer typedefs and limits, preferably from inttypes.h, otherwise - * through automatic detection. - */ -#if defined(DUK_F_HAVE_INTTYPES) -/* C99 or compatible */ - -#define DUK_F_HAVE_64BIT -#include - -typedef uint8_t duk_uint8_t; -typedef int8_t duk_int8_t; -typedef uint16_t duk_uint16_t; -typedef int16_t duk_int16_t; -typedef uint32_t duk_uint32_t; -typedef int32_t duk_int32_t; -typedef uint64_t duk_uint64_t; -typedef int64_t duk_int64_t; -typedef uint_least8_t duk_uint_least8_t; -typedef int_least8_t duk_int_least8_t; -typedef uint_least16_t duk_uint_least16_t; -typedef int_least16_t duk_int_least16_t; -typedef uint_least32_t duk_uint_least32_t; -typedef int_least32_t duk_int_least32_t; -typedef uint_least64_t duk_uint_least64_t; -typedef int_least64_t duk_int_least64_t; -typedef uint_fast8_t duk_uint_fast8_t; -typedef int_fast8_t duk_int_fast8_t; -typedef uint_fast16_t duk_uint_fast16_t; -typedef int_fast16_t duk_int_fast16_t; -typedef uint_fast32_t duk_uint_fast32_t; -typedef int_fast32_t duk_int_fast32_t; -typedef uint_fast64_t duk_uint_fast64_t; -typedef int_fast64_t duk_int_fast64_t; -typedef uintptr_t duk_uintptr_t; -typedef intptr_t duk_intptr_t; -typedef uintmax_t duk_uintmax_t; -typedef intmax_t duk_intmax_t; - -#define DUK_UINT8_MIN 0 -#define DUK_UINT8_MAX UINT8_MAX -#define DUK_INT8_MIN INT8_MIN -#define DUK_INT8_MAX INT8_MAX -#define DUK_UINT_LEAST8_MIN 0 -#define DUK_UINT_LEAST8_MAX UINT_LEAST8_MAX -#define DUK_INT_LEAST8_MIN INT_LEAST8_MIN -#define DUK_INT_LEAST8_MAX INT_LEAST8_MAX -#define DUK_UINT_FAST8_MIN 0 -#define DUK_UINT_FAST8_MAX UINT_FAST8_MAX -#define DUK_INT_FAST8_MIN INT_FAST8_MIN -#define DUK_INT_FAST8_MAX INT_FAST8_MAX -#define DUK_UINT16_MIN 0 -#define DUK_UINT16_MAX UINT16_MAX -#define DUK_INT16_MIN INT16_MIN -#define DUK_INT16_MAX INT16_MAX -#define DUK_UINT_LEAST16_MIN 0 -#define DUK_UINT_LEAST16_MAX UINT_LEAST16_MAX -#define DUK_INT_LEAST16_MIN INT_LEAST16_MIN -#define DUK_INT_LEAST16_MAX INT_LEAST16_MAX -#define DUK_UINT_FAST16_MIN 0 -#define DUK_UINT_FAST16_MAX UINT_FAST16_MAX -#define DUK_INT_FAST16_MIN INT_FAST16_MIN -#define DUK_INT_FAST16_MAX INT_FAST16_MAX -#define DUK_UINT32_MIN 0 -#define DUK_UINT32_MAX UINT32_MAX -#define DUK_INT32_MIN INT32_MIN -#define DUK_INT32_MAX INT32_MAX -#define DUK_UINT_LEAST32_MIN 0 -#define DUK_UINT_LEAST32_MAX UINT_LEAST32_MAX -#define DUK_INT_LEAST32_MIN INT_LEAST32_MIN -#define DUK_INT_LEAST32_MAX INT_LEAST32_MAX -#define DUK_UINT_FAST32_MIN 0 -#define DUK_UINT_FAST32_MAX UINT_FAST32_MAX -#define DUK_INT_FAST32_MIN INT_FAST32_MIN -#define DUK_INT_FAST32_MAX INT_FAST32_MAX -#define DUK_UINT64_MIN 0 -#define DUK_UINT64_MAX UINT64_MAX -#define DUK_INT64_MIN INT64_MIN -#define DUK_INT64_MAX INT64_MAX -#define DUK_UINT_LEAST64_MIN 0 -#define DUK_UINT_LEAST64_MAX UINT_LEAST64_MAX -#define DUK_INT_LEAST64_MIN INT_LEAST64_MIN -#define DUK_INT_LEAST64_MAX INT_LEAST64_MAX -#define DUK_UINT_FAST64_MIN 0 -#define DUK_UINT_FAST64_MAX UINT_FAST64_MAX -#define DUK_INT_FAST64_MIN INT_FAST64_MIN -#define DUK_INT_FAST64_MAX INT_FAST64_MAX - -#define DUK_UINTPTR_MIN 0 -#define DUK_UINTPTR_MAX UINTPTR_MAX -#define DUK_INTPTR_MIN INTPTR_MIN -#define DUK_INTPTR_MAX INTPTR_MAX - -#define DUK_UINTMAX_MIN 0 -#define DUK_UINTMAX_MAX UINTMAX_MAX -#define DUK_INTMAX_MIN INTMAX_MIN -#define DUK_INTMAX_MAX INTMAX_MAX - -#define DUK_SIZE_MIN 0 -#define DUK_SIZE_MAX SIZE_MAX -#undef DUK_SIZE_MAX_COMPUTED - -#else /* C99 types */ - -/* When C99 types are not available, we use heuristic detection to get - * the basic 8, 16, 32, and (possibly) 64 bit types. The fast/least - * types are then assumed to be exactly the same for now: these could - * be improved per platform but C99 types are very often now available. - * 64-bit types are not available on all platforms; this is OK at least - * on 32-bit platforms. - * - * This detection code is necessarily a bit hacky and can provide typedefs - * and defines that won't work correctly on some exotic platform. - */ - -#if (defined(CHAR_BIT) && (CHAR_BIT == 8)) || \ - (defined(UCHAR_MAX) && (UCHAR_MAX == 255)) -typedef unsigned char duk_uint8_t; -typedef signed char duk_int8_t; -#else -#error cannot detect 8-bit type -#endif - -#if defined(USHRT_MAX) && (USHRT_MAX == 65535UL) -typedef unsigned short duk_uint16_t; -typedef signed short duk_int16_t; -#elif defined(UINT_MAX) && (UINT_MAX == 65535UL) -/* On some platforms int is 16-bit but long is 32-bit (e.g. PureC) */ -typedef unsigned int duk_uint16_t; -typedef signed int duk_int16_t; -#else -#error cannot detect 16-bit type -#endif - -#if defined(UINT_MAX) && (UINT_MAX == 4294967295UL) -typedef unsigned int duk_uint32_t; -typedef signed int duk_int32_t; -#elif defined(ULONG_MAX) && (ULONG_MAX == 4294967295UL) -/* On some platforms int is 16-bit but long is 32-bit (e.g. PureC) */ -typedef unsigned long duk_uint32_t; -typedef signed long duk_int32_t; -#else -#error cannot detect 32-bit type -#endif - -/* 64-bit type detection is a bit tricky. - * - * ULLONG_MAX is a standard define. __LONG_LONG_MAX__ and __ULONG_LONG_MAX__ - * are used by at least GCC (even if system headers don't provide ULLONG_MAX). - * Some GCC variants may provide __LONG_LONG_MAX__ but not __ULONG_LONG_MAX__. - * - * ULL / LL constants are rejected / warned about by some compilers, even if - * the compiler has a 64-bit type and the compiler/system headers provide an - * unsupported constant (ULL/LL)! Try to avoid using ULL / LL constants. - * As a side effect we can only check that e.g. ULONG_MAX is larger than 32 - * bits but can't be sure it is exactly 64 bits. Self tests will catch such - * cases. - */ -#undef DUK_F_HAVE_64BIT -#if !defined(DUK_F_HAVE_64BIT) && defined(ULONG_MAX) -#if (ULONG_MAX > 4294967295UL) -#define DUK_F_HAVE_64BIT -typedef unsigned long duk_uint64_t; -typedef signed long duk_int64_t; -#endif -#endif -#if !defined(DUK_F_HAVE_64BIT) && defined(ULLONG_MAX) -#if (ULLONG_MAX > 4294967295UL) -#define DUK_F_HAVE_64BIT -typedef unsigned long long duk_uint64_t; -typedef signed long long duk_int64_t; -#endif -#endif -#if !defined(DUK_F_HAVE_64BIT) && defined(__ULONG_LONG_MAX__) -#if (__ULONG_LONG_MAX__ > 4294967295UL) -#define DUK_F_HAVE_64BIT -typedef unsigned long long duk_uint64_t; -typedef signed long long duk_int64_t; -#endif -#endif -#if !defined(DUK_F_HAVE_64BIT) && defined(__LONG_LONG_MAX__) -#if (__LONG_LONG_MAX__ > 2147483647L) -#define DUK_F_HAVE_64BIT -typedef unsigned long long duk_uint64_t; -typedef signed long long duk_int64_t; -#endif -#endif -#if !defined(DUK_F_HAVE_64BIT) && defined(DUK_F_MINGW) -#define DUK_F_HAVE_64BIT -typedef unsigned long duk_uint64_t; -typedef signed long duk_int64_t; -#endif -#if !defined(DUK_F_HAVE_64BIT) && defined(DUK_F_MSVC) -#define DUK_F_HAVE_64BIT -typedef unsigned __int64 duk_uint64_t; -typedef signed __int64 duk_int64_t; -#endif -#if !defined(DUK_F_HAVE_64BIT) -/* cannot detect 64-bit type, not always needed so don't error */ -#endif - -typedef duk_uint8_t duk_uint_least8_t; -typedef duk_int8_t duk_int_least8_t; -typedef duk_uint16_t duk_uint_least16_t; -typedef duk_int16_t duk_int_least16_t; -typedef duk_uint32_t duk_uint_least32_t; -typedef duk_int32_t duk_int_least32_t; -typedef duk_uint8_t duk_uint_fast8_t; -typedef duk_int8_t duk_int_fast8_t; -typedef duk_uint16_t duk_uint_fast16_t; -typedef duk_int16_t duk_int_fast16_t; -typedef duk_uint32_t duk_uint_fast32_t; -typedef duk_int32_t duk_int_fast32_t; -#if defined(DUK_F_HAVE_64BIT) -typedef duk_uint64_t duk_uint_least64_t; -typedef duk_int64_t duk_int_least64_t; -typedef duk_uint64_t duk_uint_fast64_t; -typedef duk_int64_t duk_int_fast64_t; -#endif -#if defined(DUK_F_HAVE_64BIT) -typedef duk_uint64_t duk_uintmax_t; -typedef duk_int64_t duk_intmax_t; -#else -typedef duk_uint32_t duk_uintmax_t; -typedef duk_int32_t duk_intmax_t; -#endif - -/* Note: the funny looking computations for signed minimum 16-bit, 32-bit, and - * 64-bit values are intentional as the obvious forms (e.g. -0x80000000L) are - * -not- portable. See code-issues.txt for a detailed discussion. - */ -#define DUK_UINT8_MIN 0UL -#define DUK_UINT8_MAX 0xffUL -#define DUK_INT8_MIN (-0x80L) -#define DUK_INT8_MAX 0x7fL -#define DUK_UINT_LEAST8_MIN 0UL -#define DUK_UINT_LEAST8_MAX 0xffUL -#define DUK_INT_LEAST8_MIN (-0x80L) -#define DUK_INT_LEAST8_MAX 0x7fL -#define DUK_UINT_FAST8_MIN 0UL -#define DUK_UINT_FAST8_MAX 0xffUL -#define DUK_INT_FAST8_MIN (-0x80L) -#define DUK_INT_FAST8_MAX 0x7fL -#define DUK_UINT16_MIN 0UL -#define DUK_UINT16_MAX 0xffffUL -#define DUK_INT16_MIN (-0x7fffL - 1L) -#define DUK_INT16_MAX 0x7fffL -#define DUK_UINT_LEAST16_MIN 0UL -#define DUK_UINT_LEAST16_MAX 0xffffUL -#define DUK_INT_LEAST16_MIN (-0x7fffL - 1L) -#define DUK_INT_LEAST16_MAX 0x7fffL -#define DUK_UINT_FAST16_MIN 0UL -#define DUK_UINT_FAST16_MAX 0xffffUL -#define DUK_INT_FAST16_MIN (-0x7fffL - 1L) -#define DUK_INT_FAST16_MAX 0x7fffL -#define DUK_UINT32_MIN 0UL -#define DUK_UINT32_MAX 0xffffffffUL -#define DUK_INT32_MIN (-0x7fffffffL - 1L) -#define DUK_INT32_MAX 0x7fffffffL -#define DUK_UINT_LEAST32_MIN 0UL -#define DUK_UINT_LEAST32_MAX 0xffffffffUL -#define DUK_INT_LEAST32_MIN (-0x7fffffffL - 1L) -#define DUK_INT_LEAST32_MAX 0x7fffffffL -#define DUK_UINT_FAST32_MIN 0UL -#define DUK_UINT_FAST32_MAX 0xffffffffUL -#define DUK_INT_FAST32_MIN (-0x7fffffffL - 1L) -#define DUK_INT_FAST32_MAX 0x7fffffffL - -/* 64-bit constants. Since LL / ULL constants are not always available, - * use computed values. These values can't be used in preprocessor - * comparisons; flag them as such. - */ -#if defined(DUK_F_HAVE_64BIT) -#define DUK_UINT64_MIN ((duk_uint64_t) 0) -#define DUK_UINT64_MAX ((duk_uint64_t) -1) -#define DUK_INT64_MIN ((duk_int64_t) (~(DUK_UINT64_MAX >> 1))) -#define DUK_INT64_MAX ((duk_int64_t) (DUK_UINT64_MAX >> 1)) -#define DUK_UINT_LEAST64_MIN DUK_UINT64_MIN -#define DUK_UINT_LEAST64_MAX DUK_UINT64_MAX -#define DUK_INT_LEAST64_MIN DUK_INT64_MIN -#define DUK_INT_LEAST64_MAX DUK_INT64_MAX -#define DUK_UINT_FAST64_MIN DUK_UINT64_MIN -#define DUK_UINT_FAST64_MAX DUK_UINT64_MAX -#define DUK_INT_FAST64_MIN DUK_INT64_MIN -#define DUK_INT_FAST64_MAX DUK_INT64_MAX -#define DUK_UINT64_MIN_COMPUTED -#define DUK_UINT64_MAX_COMPUTED -#define DUK_INT64_MIN_COMPUTED -#define DUK_INT64_MAX_COMPUTED -#define DUK_UINT_LEAST64_MIN_COMPUTED -#define DUK_UINT_LEAST64_MAX_COMPUTED -#define DUK_INT_LEAST64_MIN_COMPUTED -#define DUK_INT_LEAST64_MAX_COMPUTED -#define DUK_UINT_FAST64_MIN_COMPUTED -#define DUK_UINT_FAST64_MAX_COMPUTED -#define DUK_INT_FAST64_MIN_COMPUTED -#define DUK_INT_FAST64_MAX_COMPUTED -#endif - -#if defined(DUK_F_HAVE_64BIT) -#define DUK_UINTMAX_MIN DUK_UINT64_MIN -#define DUK_UINTMAX_MAX DUK_UINT64_MAX -#define DUK_INTMAX_MIN DUK_INT64_MIN -#define DUK_INTMAX_MAX DUK_INT64_MAX -#define DUK_UINTMAX_MIN_COMPUTED -#define DUK_UINTMAX_MAX_COMPUTED -#define DUK_INTMAX_MIN_COMPUTED -#define DUK_INTMAX_MAX_COMPUTED -#else -#define DUK_UINTMAX_MIN 0UL -#define DUK_UINTMAX_MAX 0xffffffffUL -#define DUK_INTMAX_MIN (-0x7fffffffL - 1L) -#define DUK_INTMAX_MAX 0x7fffffffL -#endif - -/* This detection is not very reliable. */ -#if defined(DUK_F_32BIT_PTRS) -typedef duk_int32_t duk_intptr_t; -typedef duk_uint32_t duk_uintptr_t; -#define DUK_UINTPTR_MIN DUK_UINT32_MIN -#define DUK_UINTPTR_MAX DUK_UINT32_MAX -#define DUK_INTPTR_MIN DUK_INT32_MIN -#define DUK_INTPTR_MAX DUK_INT32_MAX -#elif defined(DUK_F_64BIT_PTRS) && defined(DUK_F_HAVE_64BIT) -typedef duk_int64_t duk_intptr_t; -typedef duk_uint64_t duk_uintptr_t; -#define DUK_UINTPTR_MIN DUK_UINT64_MIN -#define DUK_UINTPTR_MAX DUK_UINT64_MAX -#define DUK_INTPTR_MIN DUK_INT64_MIN -#define DUK_INTPTR_MAX DUK_INT64_MAX -#define DUK_UINTPTR_MIN_COMPUTED -#define DUK_UINTPTR_MAX_COMPUTED -#define DUK_INTPTR_MIN_COMPUTED -#define DUK_INTPTR_MAX_COMPUTED -#else -#error cannot determine intptr type -#endif - -/* SIZE_MAX may be missing so use an approximate value for it. */ -#undef DUK_SIZE_MAX_COMPUTED -#if !defined(SIZE_MAX) -#define DUK_SIZE_MAX_COMPUTED -#define SIZE_MAX ((size_t) (-1)) -#endif -#define DUK_SIZE_MIN 0 -#define DUK_SIZE_MAX SIZE_MAX - -#endif /* C99 types */ - -/* A few types are assumed to always exist. */ -typedef size_t duk_size_t; -typedef ptrdiff_t duk_ptrdiff_t; - -/* The best type for an "all around int" in Duktape internals is "at least - * 32 bit signed integer" which is most convenient. Same for unsigned type. - * Prefer 'int' when large enough, as it is almost always a convenient type. - */ -#if defined(UINT_MAX) && (UINT_MAX >= 0xffffffffUL) -typedef int duk_int_t; -typedef unsigned int duk_uint_t; -#define DUK_INT_MIN INT_MIN -#define DUK_INT_MAX INT_MAX -#define DUK_UINT_MIN 0 -#define DUK_UINT_MAX UINT_MAX -#else -typedef duk_int_fast32_t duk_int_t; -typedef duk_uint_fast32_t duk_uint_t; -#define DUK_INT_MIN DUK_INT_FAST32_MIN -#define DUK_INT_MAX DUK_INT_FAST32_MAX -#define DUK_UINT_MIN DUK_UINT_FAST32_MIN -#define DUK_UINT_MAX DUK_UINT_FAST32_MAX -#endif - -/* Same as 'duk_int_t' but guaranteed to be a 'fast' variant if this - * distinction matters for the CPU. These types are used mainly in the - * executor where it might really matter. - */ -typedef duk_int_fast32_t duk_int_fast_t; -typedef duk_uint_fast32_t duk_uint_fast_t; -#define DUK_INT_FAST_MIN DUK_INT_FAST32_MIN -#define DUK_INT_FAST_MAX DUK_INT_FAST32_MAX -#define DUK_UINT_FAST_MIN DUK_UINT_FAST32_MIN -#define DUK_UINT_FAST_MAX DUK_UINT_FAST32_MAX - -/* Small integers (16 bits or more) can fall back to the 'int' type, but - * have a typedef so they are marked "small" explicitly. - */ -typedef int duk_small_int_t; -typedef unsigned int duk_small_uint_t; -#define DUK_SMALL_INT_MIN INT_MIN -#define DUK_SMALL_INT_MAX INT_MAX -#define DUK_SMALL_UINT_MIN 0 -#define DUK_SMALL_UINT_MAX UINT_MAX - -/* Fast variants of small integers, again for really fast paths like the - * executor. - */ -typedef duk_int_fast16_t duk_small_int_fast_t; -typedef duk_uint_fast16_t duk_small_uint_fast_t; -#define DUK_SMALL_INT_FAST_MIN DUK_INT_FAST16_MIN -#define DUK_SMALL_INT_FAST_MAX DUK_INT_FAST16_MAX -#define DUK_SMALL_UINT_FAST_MIN DUK_UINT_FAST16_MIN -#define DUK_SMALL_UINT_FAST_MAX DUK_UINT_FAST16_MAX - -/* Boolean values are represented with the platform 'unsigned int'. */ -typedef duk_small_uint_t duk_bool_t; -#define DUK_BOOL_MIN DUK_SMALL_UINT_MIN -#define DUK_BOOL_MAX DUK_SMALL_UINT_MAX - -/* Index values must have at least 32-bit signed range. */ -typedef duk_int_t duk_idx_t; -#define DUK_IDX_MIN DUK_INT_MIN -#define DUK_IDX_MAX DUK_INT_MAX - -/* Unsigned index variant. */ -typedef duk_uint_t duk_uidx_t; -#define DUK_UIDX_MIN DUK_UINT_MIN -#define DUK_UIDX_MAX DUK_UINT_MAX - -/* Array index values, could be exact 32 bits. - * Currently no need for signed duk_arridx_t. - */ -typedef duk_uint_t duk_uarridx_t; -#define DUK_UARRIDX_MIN DUK_UINT_MIN -#define DUK_UARRIDX_MAX DUK_UINT_MAX - -/* Duktape/C function return value, platform int is enough for now to - * represent 0, 1, or negative error code. Must be compatible with - * assigning truth values (e.g. duk_ret_t rc = (foo == bar);). - */ -typedef duk_small_int_t duk_ret_t; -#define DUK_RET_MIN DUK_SMALL_INT_MIN -#define DUK_RET_MAX DUK_SMALL_INT_MAX - -/* Error codes are represented with platform int. High bits are used - * for flags and such, so 32 bits are needed. - */ -typedef duk_int_t duk_errcode_t; -#define DUK_ERRCODE_MIN DUK_INT_MIN -#define DUK_ERRCODE_MAX DUK_INT_MAX - -/* Codepoint type. Must be 32 bits or more because it is used also for - * internal codepoints. The type is signed because negative codepoints - * are used as internal markers (e.g. to mark EOF or missing argument). - * (X)UTF-8/CESU-8 encode/decode take and return an unsigned variant to - * ensure duk_uint32_t casts back and forth nicely. Almost everything - * else uses the signed one. - */ -typedef duk_int_t duk_codepoint_t; -typedef duk_uint_t duk_ucodepoint_t; -#define DUK_CODEPOINT_MIN DUK_INT_MIN -#define DUK_CODEPOINT_MAX DUK_INT_MAX -#define DUK_UCODEPOINT_MIN DUK_UINT_MIN -#define DUK_UCODEPOINT_MAX DUK_UINT_MAX - -/* IEEE float/double typedef. */ -typedef float duk_float_t; -typedef double duk_double_t; - -/* We're generally assuming that we're working on a platform with a 32-bit - * address space. If DUK_SIZE_MAX is a typecast value (which is necessary - * if SIZE_MAX is missing), the check must be avoided because the - * preprocessor can't do a comparison. - */ -#if !defined(DUK_SIZE_MAX) -#error DUK_SIZE_MAX is undefined, probably missing SIZE_MAX -#elif !defined(DUK_SIZE_MAX_COMPUTED) -#if DUK_SIZE_MAX < 0xffffffffUL -/* On some systems SIZE_MAX can be smaller than max unsigned 32-bit value - * which seems incorrect if size_t is (at least) an unsigned 32-bit type. - * However, it doesn't seem useful to error out compilation if this is the - * case. - */ -#endif -#endif - -/* Type used in public API declarations and user code. Typedef maps to - * 'struct duk_hthread' like the 'duk_hthread' typedef which is used - * exclusively in internals. - */ -typedef struct duk_hthread duk_context; - -/* Check whether we should use 64-bit integers or not. - * - * Quite incomplete now. Use 64-bit types if detected (C99 or other detection) - * unless they are known to be unreliable. For instance, 64-bit types are - * available on VBCC but seem to misbehave. - */ -#if defined(DUK_F_HAVE_64BIT) && !defined(DUK_F_VBCC) -#define DUK_USE_64BIT_OPS -#else -#undef DUK_USE_64BIT_OPS -#endif - -/* - * Fill-ins for platform, architecture, and compiler - */ - -/* An abort()-like primitive is needed by the default fatal error handler. */ -#if !defined(DUK_ABORT) -#define DUK_ABORT abort -#endif - -#if !defined(DUK_SETJMP) -#define DUK_JMPBUF_TYPE jmp_buf -#define DUK_SETJMP(jb) setjmp((jb)) -#define DUK_LONGJMP(jb) longjmp((jb), 1) -#endif - -#if 0 -/* sigsetjmp() alternative */ -#define DUK_JMPBUF_TYPE sigjmp_buf -#define DUK_SETJMP(jb) sigsetjmp((jb)) -#define DUK_LONGJMP(jb) siglongjmp((jb), 1) -#endif - -/* Special naming to avoid conflict with e.g. DUK_FREE() in duk_heap.h - * (which is unfortunately named). May sometimes need replacement, e.g. - * some compilers don't handle zero length or NULL correctly in realloc(). - */ -#if !defined(DUK_ANSI_MALLOC) -#define DUK_ANSI_MALLOC malloc -#endif -#if !defined(DUK_ANSI_REALLOC) -#define DUK_ANSI_REALLOC realloc -#endif -#if !defined(DUK_ANSI_CALLOC) -#define DUK_ANSI_CALLOC calloc -#endif -#if !defined(DUK_ANSI_FREE) -#define DUK_ANSI_FREE free -#endif - -/* ANSI C (various versions) and some implementations require that the - * pointer arguments to memset(), memcpy(), and memmove() be valid values - * even when byte size is 0 (even a NULL pointer is considered invalid in - * this context). Zero-size operations as such are allowed, as long as their - * pointer arguments point to a valid memory area. The DUK_MEMSET(), - * DUK_MEMCPY(), and DUK_MEMMOVE() macros require this same behavior, i.e.: - * (1) pointers must be valid and non-NULL, (2) zero size must otherwise be - * allowed. If these are not fulfilled, a macro wrapper is needed. - * - * http://stackoverflow.com/questions/5243012/is-it-guaranteed-to-be-safe-to-perform-memcpy0-0-0 - * http://lists.cs.uiuc.edu/pipermail/llvmdev/2007-October/011065.html - * - * Not sure what's the required behavior when a pointer points just past the - * end of a buffer, which often happens in practice (e.g. zero size memmoves). - * For example, if allocation size is 3, the following pointer would not - * technically point to a valid memory byte: - * - * <-- alloc --> - * | 0 | 1 | 2 | ..... - * ^-- p=3, points after last valid byte (2) - */ -#if !defined(DUK_MEMCPY) -#if defined(DUK_F_UCLIBC) -/* Old uclibcs have a broken memcpy so use memmove instead (this is overly wide - * now on purpose): http://lists.uclibc.org/pipermail/uclibc-cvs/2008-October/025511.html - */ -#define DUK_MEMCPY memmove -#else -#define DUK_MEMCPY memcpy -#endif -#endif -#if !defined(DUK_MEMMOVE) -#define DUK_MEMMOVE memmove -#endif -#if !defined(DUK_MEMCMP) -#define DUK_MEMCMP memcmp -#endif -#if !defined(DUK_MEMSET) -#define DUK_MEMSET memset -#endif -#if !defined(DUK_STRLEN) -#define DUK_STRLEN strlen -#endif -#if !defined(DUK_STRCMP) -#define DUK_STRCMP strcmp -#endif -#if !defined(DUK_STRNCMP) -#define DUK_STRNCMP strncmp -#endif -#if !defined(DUK_SPRINTF) -#define DUK_SPRINTF sprintf -#endif -#if !defined(DUK_SNPRINTF) -/* snprintf() is technically not part of C89 but usually available. */ -#define DUK_SNPRINTF snprintf -#endif -#if !defined(DUK_VSPRINTF) -#define DUK_VSPRINTF vsprintf -#endif -#if !defined(DUK_VSNPRINTF) -/* vsnprintf() is technically not part of C89 but usually available. */ -#define DUK_VSNPRINTF vsnprintf -#endif -#if !defined(DUK_SSCANF) -#define DUK_SSCANF sscanf -#endif -#if !defined(DUK_VSSCANF) -#define DUK_VSSCANF vsscanf -#endif -#if !defined(DUK_MEMZERO) -#define DUK_MEMZERO(p,n) DUK_MEMSET((p), 0, (n)) -#endif - -#if !defined(DUK_DOUBLE_INFINITY) -#undef DUK_USE_COMPUTED_INFINITY -#if defined(DUK_F_GCC_VERSION) && (DUK_F_GCC_VERSION < 40600) -/* GCC older than 4.6: avoid overflow warnings related to using INFINITY */ -#define DUK_DOUBLE_INFINITY (__builtin_inf()) -#elif defined(INFINITY) -#define DUK_DOUBLE_INFINITY ((double) INFINITY) -#elif !defined(DUK_F_VBCC) && !defined(DUK_F_MSVC) && !defined(DUK_F_BCC) && \ - !defined(DUK_F_OLD_SOLARIS) && !defined(DUK_F_AIX) -#define DUK_DOUBLE_INFINITY (1.0 / 0.0) -#else -/* In VBCC (1.0 / 0.0) results in a warning and 0.0 instead of infinity. - * Use a computed infinity (initialized when a heap is created at the - * latest). - */ -#define DUK_USE_COMPUTED_INFINITY -#define DUK_DOUBLE_INFINITY duk_computed_infinity -#endif -#endif - -#if !defined(DUK_DOUBLE_NAN) -#undef DUK_USE_COMPUTED_NAN -#if defined(NAN) -#define DUK_DOUBLE_NAN NAN -#elif !defined(DUK_F_VBCC) && !defined(DUK_F_MSVC) && !defined(DUK_F_BCC) && \ - !defined(DUK_F_OLD_SOLARIS) && !defined(DUK_F_AIX) -#define DUK_DOUBLE_NAN (0.0 / 0.0) -#else -/* In VBCC (0.0 / 0.0) results in a warning and 0.0 instead of NaN. - * In MSVC (VS2010 Express) (0.0 / 0.0) results in a compile error. - * Use a computed NaN (initialized when a heap is created at the - * latest). - */ -#define DUK_USE_COMPUTED_NAN -#define DUK_DOUBLE_NAN duk_computed_nan -#endif -#endif - -/* Many platforms are missing fpclassify() and friends, so use replacements - * if necessary. The replacement constants (FP_NAN etc) can be anything but - * match Linux constants now. - */ -#undef DUK_USE_REPL_FPCLASSIFY -#undef DUK_USE_REPL_SIGNBIT -#undef DUK_USE_REPL_ISFINITE -#undef DUK_USE_REPL_ISNAN -#undef DUK_USE_REPL_ISINF - -/* Complex condition broken into separate parts. */ -#undef DUK_F_USE_REPL_ALL -#if !(defined(FP_NAN) && defined(FP_INFINITE) && defined(FP_ZERO) && \ - defined(FP_SUBNORMAL) && defined(FP_NORMAL)) -/* Missing some obvious constants. */ -#define DUK_F_USE_REPL_ALL -#elif defined(DUK_F_AMIGAOS) && defined(DUK_F_VBCC) -/* VBCC is missing the built-ins even in C99 mode (perhaps a header issue). */ -#define DUK_F_USE_REPL_ALL -#elif defined(DUK_F_AMIGAOS) && defined(DUK_F_M68K) -/* AmigaOS + M68K seems to have math issues even when using GCC cross - * compilation. Use replacements for all AmigaOS versions on M68K - * regardless of compiler. - */ -#define DUK_F_USE_REPL_ALL -#elif defined(DUK_F_FREEBSD) && defined(DUK_F_CLANG) -/* Placeholder fix for (detection is wider than necessary): - * http://llvm.org/bugs/show_bug.cgi?id=17788 - */ -#define DUK_F_USE_REPL_ALL -#elif defined(DUK_F_UCLIBC) -/* At least some uclibc versions have broken floating point math. For - * example, fpclassify() can incorrectly classify certain NaN formats. - * To be safe, use replacements. - */ -#define DUK_F_USE_REPL_ALL -#elif defined(DUK_F_AIX) -/* Older versions may be missing isnan(), etc. */ -#define DUK_F_USE_REPL_ALL -#endif - -#if defined(DUK_F_USE_REPL_ALL) -#define DUK_USE_REPL_FPCLASSIFY -#define DUK_USE_REPL_SIGNBIT -#define DUK_USE_REPL_ISFINITE -#define DUK_USE_REPL_ISNAN -#define DUK_USE_REPL_ISINF -#define DUK_FPCLASSIFY duk_repl_fpclassify -#define DUK_SIGNBIT duk_repl_signbit -#define DUK_ISFINITE duk_repl_isfinite -#define DUK_ISNAN duk_repl_isnan -#define DUK_ISINF duk_repl_isinf -#define DUK_FP_NAN 0 -#define DUK_FP_INFINITE 1 -#define DUK_FP_ZERO 2 -#define DUK_FP_SUBNORMAL 3 -#define DUK_FP_NORMAL 4 -#else -#define DUK_FPCLASSIFY fpclassify -#define DUK_SIGNBIT signbit -#define DUK_ISFINITE isfinite -#define DUK_ISNAN isnan -#define DUK_ISINF isinf -#define DUK_FP_NAN FP_NAN -#define DUK_FP_INFINITE FP_INFINITE -#define DUK_FP_ZERO FP_ZERO -#define DUK_FP_SUBNORMAL FP_SUBNORMAL -#define DUK_FP_NORMAL FP_NORMAL -#endif - -#if defined(DUK_F_USE_REPL_ALL) -#undef DUK_F_USE_REPL_ALL -#endif - -/* These functions don't currently need replacement but are wrapped for - * completeness. Because these are used as function pointers, they need - * to be defined as concrete C functions (not macros). - */ -#if !defined(DUK_FABS) -#define DUK_FABS fabs -#endif -#if !defined(DUK_FLOOR) -#define DUK_FLOOR floor -#endif -#if !defined(DUK_CEIL) -#define DUK_CEIL ceil -#endif -#if !defined(DUK_FMOD) -#define DUK_FMOD fmod -#endif -#if !defined(DUK_POW) -#define DUK_POW pow -#endif -#if !defined(DUK_ACOS) -#define DUK_ACOS acos -#endif -#if !defined(DUK_ASIN) -#define DUK_ASIN asin -#endif -#if !defined(DUK_ATAN) -#define DUK_ATAN atan -#endif -#if !defined(DUK_ATAN2) -#define DUK_ATAN2 atan2 -#endif -#if !defined(DUK_SIN) -#define DUK_SIN sin -#endif -#if !defined(DUK_COS) -#define DUK_COS cos -#endif -#if !defined(DUK_TAN) -#define DUK_TAN tan -#endif -#if !defined(DUK_EXP) -#define DUK_EXP exp -#endif -#if !defined(DUK_LOG) -#define DUK_LOG log -#endif -#if !defined(DUK_SQRT) -#define DUK_SQRT sqrt -#endif - -/* The functions below exist only in C99/C++11 or later and need a workaround - * for platforms that don't include them. MSVC isn't detected as C99, but - * these functions also exist in MSVC 2013 and later so include a clause for - * that too. Android doesn't have log2; disable all of these for Android. - */ -#if (defined(DUK_F_C99) || defined(DUK_F_CPP11) || (defined(_MSC_VER) && (_MSC_VER >= 1800))) && \ - !defined(DUK_F_ANDROID) && !defined(DUK_F_MINT) -#if !defined(DUK_CBRT) -#define DUK_CBRT cbrt -#endif -#if !defined(DUK_LOG2) -#define DUK_LOG2 log2 -#endif -#if !defined(DUK_LOG10) -#define DUK_LOG10 log10 -#endif -#if !defined(DUK_TRUNC) -#define DUK_TRUNC trunc -#endif -#endif /* DUK_F_C99 etc */ - -/* NetBSD 6.0 x86 (at least) has a few problems with pow() semantics, - * see test-bug-netbsd-math-pow.js. MinGW has similar (but different) - * issues, see test-bug-mingw-math-issues.js. Enable pow() workarounds - * for these targets. - */ -#undef DUK_USE_POW_WORKAROUNDS -#if defined(DUK_F_NETBSD) || defined(DUK_F_MINGW) -#define DUK_USE_POW_WORKAROUNDS -#endif - -/* Similar workarounds for atan2() semantics issues. MinGW issues are - * documented in test-bug-mingw-math-issues.js. - */ -#undef DUK_USE_ATAN2_WORKAROUNDS -#if defined(DUK_F_MINGW) -#define DUK_USE_ATAN2_WORKAROUNDS -#endif - -/* Rely as little as possible on compiler behavior for NaN comparison, - * signed zero handling, etc. Currently never activated but may be needed - * for broken compilers. - */ -#undef DUK_USE_PARANOID_MATH - -/* There was a curious bug where test-bi-date-canceling.js would fail e.g. - * on 64-bit Ubuntu, gcc-4.8.1, -m32, and no -std=c99. Some date computations - * using doubles would be optimized which then broke some corner case tests. - * The problem goes away by adding 'volatile' to the datetime computations. - * Not sure what the actual triggering conditions are, but using this on - * non-C99 systems solves the known issues and has relatively little cost - * on other platforms. - */ -#undef DUK_USE_PARANOID_DATE_COMPUTATION -#if !defined(DUK_F_C99) -#define DUK_USE_PARANOID_DATE_COMPUTATION -#endif - -/* - * Byte order and double memory layout detection - * - * Endianness detection is a major portability hassle because the macros - * and headers are not standardized. There's even variance across UNIX - * platforms. Even with "standard" headers, details like underscore count - * varies between platforms, e.g. both __BYTE_ORDER and _BYTE_ORDER are used - * (Crossbridge has a single underscore, for instance). - * - * The checks below are structured with this in mind: several approaches are - * used, and at the end we check if any of them worked. This allows generic - * approaches to be tried first, and platform/compiler specific hacks tried - * last. As a last resort, the user can force a specific endianness, as it's - * not likely that automatic detection will work on the most exotic platforms. - * - * Duktape supports little and big endian machines. There's also support - * for a hybrid used by some ARM machines where integers are little endian - * but IEEE double values use a mixed order (12345678 -> 43218765). This - * byte order for doubles is referred to as "mixed endian". - */ - -/* GCC and Clang provide endianness defines as built-in predefines, with - * leading and trailing double underscores (e.g. __BYTE_ORDER__). See - * output of "make gccpredefs" and "make clangpredefs". Clang doesn't - * seem to provide __FLOAT_WORD_ORDER__; assume not mixed endian for clang. - * http://gcc.gnu.org/onlinedocs/cpp/Common-Predefined-Macros.html - */ -#if !defined(DUK_USE_BYTEORDER) && defined(__BYTE_ORDER__) -#if defined(__ORDER_LITTLE_ENDIAN__) && (__BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) -#if defined(__FLOAT_WORD_ORDER__) && defined(__ORDER_LITTLE_ENDIAN__) && (__FLOAT_WORD_ORDER__ == __ORDER_LITTLE_ENDIAN__) -#define DUK_USE_BYTEORDER 1 -#elif defined(__FLOAT_WORD_ORDER__) && defined(__ORDER_BIG_ENDIAN__) && (__FLOAT_WORD_ORDER__ == __ORDER_BIG_ENDIAN__) -#define DUK_USE_BYTEORDER 2 -#elif !defined(__FLOAT_WORD_ORDER__) -/* Float word order not known, assume not a hybrid. */ -#define DUK_USE_BYTEORDER 1 -#else -/* Byte order is little endian but cannot determine IEEE double word order. */ -#endif /* float word order */ -#elif defined(__ORDER_BIG_ENDIAN__) && (__BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) -#if defined(__FLOAT_WORD_ORDER__) && defined(__ORDER_BIG_ENDIAN__) && (__FLOAT_WORD_ORDER__ == __ORDER_BIG_ENDIAN__) -#define DUK_USE_BYTEORDER 3 -#elif !defined(__FLOAT_WORD_ORDER__) -/* Float word order not known, assume not a hybrid. */ -#define DUK_USE_BYTEORDER 3 -#else -/* Byte order is big endian but cannot determine IEEE double word order. */ -#endif /* float word order */ -#else -/* Cannot determine byte order; __ORDER_PDP_ENDIAN__ is related to 32-bit - * integer ordering and is not relevant. - */ -#endif /* integer byte order */ -#endif /* !defined(DUK_USE_BYTEORDER) && defined(__BYTE_ORDER__) */ - -/* More or less standard endianness predefines provided by header files. - * The ARM hybrid case is detected by assuming that __FLOAT_WORD_ORDER - * will be big endian, see: http://lists.mysql.com/internals/443. - * On some platforms some defines may be present with an empty value which - * causes comparisons to fail: https://github.com/svaarala/duktape/issues/453. - */ -#if !defined(DUK_USE_BYTEORDER) -#if defined(__BYTE_ORDER) && defined(__LITTLE_ENDIAN) && (__BYTE_ORDER == __LITTLE_ENDIAN) || \ - defined(_BYTE_ORDER) && defined(_LITTLE_ENDIAN) && (_BYTE_ORDER == _LITTLE_ENDIAN) || \ - defined(__LITTLE_ENDIAN__) -#if defined(__FLOAT_WORD_ORDER) && defined(__LITTLE_ENDIAN) && (__FLOAT_WORD_ORDER == __LITTLE_ENDIAN) || \ - defined(_FLOAT_WORD_ORDER) && defined(_LITTLE_ENDIAN) && (_FLOAT_WORD_ORDER == _LITTLE_ENDIAN) -#define DUK_USE_BYTEORDER 1 -#elif defined(__FLOAT_WORD_ORDER) && defined(__BIG_ENDIAN) && (__FLOAT_WORD_ORDER == __BIG_ENDIAN) || \ - defined(_FLOAT_WORD_ORDER) && defined(_BIG_ENDIAN) && (_FLOAT_WORD_ORDER == _BIG_ENDIAN) -#define DUK_USE_BYTEORDER 2 -#elif !defined(__FLOAT_WORD_ORDER) && !defined(_FLOAT_WORD_ORDER) -/* Float word order not known, assume not a hybrid. */ -#define DUK_USE_BYTEORDER 1 -#else -/* Byte order is little endian but cannot determine IEEE double word order. */ -#endif /* float word order */ -#elif defined(__BYTE_ORDER) && defined(__BIG_ENDIAN) && (__BYTE_ORDER == __BIG_ENDIAN) || \ - defined(_BYTE_ORDER) && defined(_BIG_ENDIAN) && (_BYTE_ORDER == _BIG_ENDIAN) || \ - defined(__BIG_ENDIAN__) -#if defined(__FLOAT_WORD_ORDER) && defined(__BIG_ENDIAN) && (__FLOAT_WORD_ORDER == __BIG_ENDIAN) || \ - defined(_FLOAT_WORD_ORDER) && defined(_BIG_ENDIAN) && (_FLOAT_WORD_ORDER == _BIG_ENDIAN) -#define DUK_USE_BYTEORDER 3 -#elif !defined(__FLOAT_WORD_ORDER) && !defined(_FLOAT_WORD_ORDER) -/* Float word order not known, assume not a hybrid. */ -#define DUK_USE_BYTEORDER 3 -#else -/* Byte order is big endian but cannot determine IEEE double word order. */ -#endif /* float word order */ -#else -/* Cannot determine byte order. */ -#endif /* integer byte order */ -#endif /* !defined(DUK_USE_BYTEORDER) */ - -/* QNX gcc cross compiler seems to define e.g. __LITTLEENDIAN__ or __BIGENDIAN__: - * $ /opt/qnx650/host/linux/x86/usr/bin/i486-pc-nto-qnx6.5.0-gcc -dM -E - > 56U) | \ - ((((duk_uint64_t) (x)) >> 40U) & DUK_U64_CONSTANT(0xff00)) | \ - ((((duk_uint64_t) (x)) >> 24U) & DUK_U64_CONSTANT(0xff0000)) | \ - ((((duk_uint64_t) (x)) >> 8U) & DUK_U64_CONSTANT(0xff000000)) | \ - ((((duk_uint64_t) (x)) << 8U) & DUK_U64_CONSTANT(0xff00000000)) | \ - ((((duk_uint64_t) (x)) << 24U) & DUK_U64_CONSTANT(0xff0000000000)) | \ - ((((duk_uint64_t) (x)) << 40U) & DUK_U64_CONSTANT(0xff000000000000)) | \ - (((duk_uint64_t) (x)) << 56U)) -#endif -#endif -#if !defined(DUK_BSWAP32) -#define DUK_BSWAP32(x) \ - ((((duk_uint32_t) (x)) >> 24U) | \ - ((((duk_uint32_t) (x)) >> 8U) & 0xff00UL) | \ - ((((duk_uint32_t) (x)) << 8U) & 0xff0000UL) | \ - (((duk_uint32_t) (x)) << 24U)) -#endif -#if !defined(DUK_BSWAP16) -#define DUK_BSWAP16(x) \ - ((duk_uint16_t) (x) >> 8U) | \ - ((duk_uint16_t) (x) << 8U) -#endif - -/* DUK_USE_VARIADIC_MACROS: required from compilers, so no fill-in. */ -/* DUK_USE_UNION_INITIALIZERS: required from compilers, so no fill-in. */ - -#if !(defined(DUK_USE_FLEX_C99) || defined(DUK_USE_FLEX_ZEROSIZE) || defined(DUK_USE_FLEX_ONESIZE)) -#if defined(DUK_F_C99) -#define DUK_USE_FLEX_C99 -#else -#define DUK_USE_FLEX_ZEROSIZE /* Not standard but common enough */ -#endif -#endif - -#if !(defined(DUK_USE_PACK_GCC_ATTR) || defined(DUK_USE_PACK_CLANG_ATTR) || \ - defined(DUK_USE_PACK_MSVC_PRAGMA) || defined(DUK_USE_PACK_DUMMY_MEMBER)) -#define DUK_USE_PACK_DUMMY_MEMBER -#endif - -#if 0 /* not defined by default */ -#undef DUK_USE_GCC_PRAGMAS -#endif - -/* Workaround for GH-323: avoid inlining control when compiling from - * multiple sources, as it causes compiler portability trouble. - */ -#if !defined(DUK_SINGLE_FILE) -#undef DUK_NOINLINE -#undef DUK_INLINE -#undef DUK_ALWAYS_INLINE -#define DUK_NOINLINE /*nop*/ -#define DUK_INLINE /*nop*/ -#define DUK_ALWAYS_INLINE /*nop*/ -#endif - -/* - * Check whether or not a packed duk_tval representation is possible. - * What's basically required is that pointers are 32-bit values - * (sizeof(void *) == 4). Best effort check, not always accurate. - * If guess goes wrong, crashes may result; self tests also verify - * the guess. - */ - -/* Explicit marker needed; may be 'defined', 'undefined, 'or 'not provided'. */ -#if !defined(DUK_F_PACKED_TVAL_PROVIDED) -#undef DUK_F_PACKED_TVAL_POSSIBLE - -/* Strict C99 case: DUK_UINTPTR_MAX (= UINTPTR_MAX) should be very reliable */ -#if !defined(DUK_F_PACKED_TVAL_POSSIBLE) && defined(DUK_UINTPTR_MAX) -#if (DUK_UINTPTR_MAX <= 0xffffffffUL) -#define DUK_F_PACKED_TVAL_POSSIBLE -#endif -#endif - -/* Non-C99 case, still relying on DUK_UINTPTR_MAX, as long as it is not a computed value */ -#if !defined(DUK_F_PACKED_TVAL_POSSIBLE) && defined(DUK_UINTPTR_MAX) && !defined(DUK_UINTPTR_MAX_COMPUTED) -#if (DUK_UINTPTR_MAX <= 0xffffffffUL) -#define DUK_F_PACKED_TVAL_POSSIBLE -#endif -#endif - -/* DUK_SIZE_MAX (= SIZE_MAX) is often reliable */ -#if !defined(DUK_F_PACKED_TVAL_POSSIBLE) && defined(DUK_SIZE_MAX) && !defined(DUK_SIZE_MAX_COMPUTED) -#if (DUK_SIZE_MAX <= 0xffffffffUL) -#define DUK_F_PACKED_TVAL_POSSIBLE -#endif -#endif - -#undef DUK_USE_PACKED_TVAL -#if defined(DUK_F_PACKED_TVAL_POSSIBLE) -#define DUK_USE_PACKED_TVAL -#endif -#undef DUK_F_PACKED_TVAL_POSSIBLE - -#endif /* DUK_F_PACKED_TVAL_PROVIDED */ -/* Object property allocation layout has implications for memory and code - * footprint and generated code size/speed. The best layout also depends - * on whether the platform has alignment requirements or benefits from - * having mostly aligned accesses. - */ -#undef DUK_USE_HOBJECT_LAYOUT_1 -#undef DUK_USE_HOBJECT_LAYOUT_2 -#undef DUK_USE_HOBJECT_LAYOUT_3 -#if (DUK_USE_ALIGN_BY == 1) -/* On platforms without any alignment issues, layout 1 is preferable - * because it compiles to slightly less code and provides direct access - * to property keys. - */ -#define DUK_USE_HOBJECT_LAYOUT_1 -#else -/* On other platforms use layout 2, which requires some padding but - * is a bit more natural than layout 3 in ordering the entries. Layout - * 3 is currently not used. - */ -#define DUK_USE_HOBJECT_LAYOUT_2 -#endif - -/* GCC/clang inaccurate math would break compliance and probably duk_tval, - * so refuse to compile. Relax this if -ffast-math is tested to work. - */ -#if defined(__FAST_MATH__) -#error __FAST_MATH__ defined, refusing to compile -#endif - -/* - * Autogenerated defaults - */ - -#undef DUK_USE_ALLOW_UNDEFINED_BEHAVIOR -#define DUK_USE_ARRAY_BUILTIN -#define DUK_USE_ARRAY_FASTPATH -#define DUK_USE_ARRAY_PROP_FASTPATH -#undef DUK_USE_ASSERTIONS -#define DUK_USE_AUGMENT_ERROR_CREATE -#define DUK_USE_AUGMENT_ERROR_THROW -#define DUK_USE_AVOID_PLATFORM_FUNCPTRS -#define DUK_USE_BASE64_FASTPATH -#define DUK_USE_BASE64_SUPPORT -#define DUK_USE_BOOLEAN_BUILTIN -#define DUK_USE_BUFFEROBJECT_SUPPORT -#undef DUK_USE_BUFLEN16 -#define DUK_USE_BYTECODE_DUMP_SUPPORT -#define DUK_USE_CACHE_ACTIVATION -#define DUK_USE_CACHE_CATCHER -#define DUK_USE_CALLSTACK_LIMIT 10000 -#define DUK_USE_CBOR_BUILTIN -#define DUK_USE_CBOR_DEC_RECLIMIT 1000 -#define DUK_USE_CBOR_ENC_RECLIMIT 1000 -#define DUK_USE_CBOR_SUPPORT -#define DUK_USE_COMPILER_RECLIMIT 2500 -#define DUK_USE_COROUTINE_SUPPORT -#undef DUK_USE_CPP_EXCEPTIONS -#undef DUK_USE_DATAPTR16 -#undef DUK_USE_DATAPTR_DEC16 -#undef DUK_USE_DATAPTR_ENC16 -#define DUK_USE_DATE_BUILTIN -#undef DUK_USE_DATE_FORMAT_STRING -#undef DUK_USE_DATE_GET_LOCAL_TZOFFSET -#undef DUK_USE_DATE_GET_NOW -#undef DUK_USE_DATE_PARSE_STRING -#undef DUK_USE_DATE_PRS_GETDATE -#undef DUK_USE_DEBUG -#undef DUK_USE_DEBUGGER_DUMPHEAP -#undef DUK_USE_DEBUGGER_INSPECT -#undef DUK_USE_DEBUGGER_PAUSE_UNCAUGHT -#undef DUK_USE_DEBUGGER_SUPPORT -#define DUK_USE_DEBUGGER_THROW_NOTIFY -#undef DUK_USE_DEBUGGER_TRANSPORT_TORTURE -#define DUK_USE_DEBUG_BUFSIZE 65536L -#define DUK_USE_DEBUG_LEVEL 0 -#undef DUK_USE_DEBUG_WRITE -#define DUK_USE_DOUBLE_LINKED_HEAP -#define DUK_USE_DUKTAPE_BUILTIN -#define DUK_USE_ENCODING_BUILTINS -#define DUK_USE_ERRCREATE -#define DUK_USE_ERRTHROW -#define DUK_USE_ES6 -#define DUK_USE_ES6_OBJECT_PROTO_PROPERTY -#define DUK_USE_ES6_OBJECT_SETPROTOTYPEOF -#define DUK_USE_ES6_PROXY -#define DUK_USE_ES6_REGEXP_SYNTAX -#define DUK_USE_ES6_UNICODE_ESCAPE -#define DUK_USE_ES7 -#define DUK_USE_ES7_EXP_OPERATOR -#define DUK_USE_ES8 -#define DUK_USE_ES9 -#define DUK_USE_ESBC_LIMITS -#define DUK_USE_ESBC_MAX_BYTES 2147418112L -#define DUK_USE_ESBC_MAX_LINENUMBER 2147418112L -#undef DUK_USE_EXEC_FUN_LOCAL -#undef DUK_USE_EXEC_INDIRECT_BOUND_CHECK -#undef DUK_USE_EXEC_PREFER_SIZE -#define DUK_USE_EXEC_REGCONST_OPTIMIZE -#undef DUK_USE_EXEC_TIMEOUT_CHECK -#undef DUK_USE_EXPLICIT_NULL_INIT -#undef DUK_USE_EXTSTR_FREE -#undef DUK_USE_EXTSTR_INTERN_CHECK -#undef DUK_USE_FASTINT -#define DUK_USE_FAST_REFCOUNT_DEFAULT -#undef DUK_USE_FATAL_HANDLER -#define DUK_USE_FATAL_MAXLEN 128 -#define DUK_USE_FINALIZER_SUPPORT -#undef DUK_USE_FINALIZER_TORTURE -#undef DUK_USE_FUNCPTR16 -#undef DUK_USE_FUNCPTR_DEC16 -#undef DUK_USE_FUNCPTR_ENC16 -#define DUK_USE_FUNCTION_BUILTIN -#define DUK_USE_FUNC_FILENAME_PROPERTY -#define DUK_USE_FUNC_NAME_PROPERTY -#undef DUK_USE_GC_TORTURE -#undef DUK_USE_GET_MONOTONIC_TIME -#undef DUK_USE_GET_RANDOM_DOUBLE -#define DUK_USE_GLOBAL_BINDING -#define DUK_USE_GLOBAL_BUILTIN -#undef DUK_USE_HEAPPTR16 -#undef DUK_USE_HEAPPTR_DEC16 -#undef DUK_USE_HEAPPTR_ENC16 -#define DUK_USE_HEX_FASTPATH -#define DUK_USE_HEX_SUPPORT -#define DUK_USE_HOBJECT_ARRAY_ABANDON_LIMIT 2 -#define DUK_USE_HOBJECT_ARRAY_ABANDON_MINSIZE 257 -#define DUK_USE_HOBJECT_ARRAY_FAST_RESIZE_LIMIT 9 -#define DUK_USE_HOBJECT_ARRAY_MINGROW_ADD 16 -#define DUK_USE_HOBJECT_ARRAY_MINGROW_DIVISOR 8 -#define DUK_USE_HOBJECT_ENTRY_MINGROW_ADD 16 -#define DUK_USE_HOBJECT_ENTRY_MINGROW_DIVISOR 8 -#define DUK_USE_HOBJECT_HASH_PART -#define DUK_USE_HOBJECT_HASH_PROP_LIMIT 8 -#define DUK_USE_HSTRING_ARRIDX -#define DUK_USE_HSTRING_CLEN -#undef DUK_USE_HSTRING_EXTDATA -#define DUK_USE_HSTRING_LAZY_CLEN -#define DUK_USE_HTML_COMMENTS -#define DUK_USE_IDCHAR_FASTPATH -#undef DUK_USE_INJECT_HEAP_ALLOC_ERROR -#undef DUK_USE_INTERRUPT_COUNTER -#undef DUK_USE_INTERRUPT_DEBUG_FIXUP -#define DUK_USE_JC -#define DUK_USE_JSON_BUILTIN -#define DUK_USE_JSON_DECNUMBER_FASTPATH -#define DUK_USE_JSON_DECSTRING_FASTPATH -#define DUK_USE_JSON_DEC_RECLIMIT 1000 -#define DUK_USE_JSON_EATWHITE_FASTPATH -#define DUK_USE_JSON_ENC_RECLIMIT 1000 -#define DUK_USE_JSON_QUOTESTRING_FASTPATH -#undef DUK_USE_JSON_STRINGIFY_FASTPATH -#define DUK_USE_JSON_SUPPORT -#define DUK_USE_JX -#define DUK_USE_LEXER_SLIDING_WINDOW -#undef DUK_USE_LIGHTFUNC_BUILTINS -#define DUK_USE_LITCACHE_SIZE 256 -#define DUK_USE_MARK_AND_SWEEP_RECLIMIT 256 -#define DUK_USE_MATH_BUILTIN -#define DUK_USE_NATIVE_CALL_RECLIMIT 1000 -#undef DUK_USE_NATIVE_STACK_CHECK -#define DUK_USE_NONSTD_ARRAY_SPLICE_DELCOUNT -#undef DUK_USE_NONSTD_FUNC_CALLER_PROPERTY -#undef DUK_USE_NONSTD_FUNC_SOURCE_PROPERTY -#define DUK_USE_NONSTD_FUNC_STMT -#define DUK_USE_NONSTD_GETTER_KEY_ARGUMENT -#define DUK_USE_NONSTD_JSON_ESC_U2028_U2029 -#define DUK_USE_NONSTD_SETTER_KEY_ARGUMENT -#define DUK_USE_NONSTD_STRING_FROMCHARCODE_32BIT -#define DUK_USE_NUMBER_BUILTIN -#define DUK_USE_OBJECT_BUILTIN -#undef DUK_USE_OBJSIZES16 -#undef DUK_USE_PARANOID_ERRORS -#define DUK_USE_PC2LINE -#define DUK_USE_PERFORMANCE_BUILTIN -#undef DUK_USE_PREFER_SIZE -#undef DUK_USE_PROMISE_BUILTIN -#define DUK_USE_PROVIDE_DEFAULT_ALLOC_FUNCTIONS -#undef DUK_USE_REFCOUNT16 -#define DUK_USE_REFCOUNT32 -#define DUK_USE_REFERENCE_COUNTING -#define DUK_USE_REFLECT_BUILTIN -#define DUK_USE_REGEXP_CANON_BITMAP -#undef DUK_USE_REGEXP_CANON_WORKAROUND -#define DUK_USE_REGEXP_COMPILER_RECLIMIT 10000 -#define DUK_USE_REGEXP_EXECUTOR_RECLIMIT 10000 -#define DUK_USE_REGEXP_SUPPORT -#undef DUK_USE_ROM_GLOBAL_CLONE -#undef DUK_USE_ROM_GLOBAL_INHERIT -#undef DUK_USE_ROM_OBJECTS -#define DUK_USE_ROM_PTRCOMP_FIRST 63488L -#undef DUK_USE_ROM_STRINGS -#define DUK_USE_SECTION_B -#undef DUK_USE_SELF_TESTS -#define DUK_USE_SHEBANG_COMMENTS -#undef DUK_USE_SHUFFLE_TORTURE -#define DUK_USE_SOURCE_NONBMP -#undef DUK_USE_STRHASH16 -#undef DUK_USE_STRHASH_DENSE -#define DUK_USE_STRHASH_SKIP_SHIFT 5 -#define DUK_USE_STRICT_DECL -#undef DUK_USE_STRICT_UTF8_SOURCE -#define DUK_USE_STRING_BUILTIN -#undef DUK_USE_STRLEN16 -#define DUK_USE_STRTAB_GROW_LIMIT 17 -#define DUK_USE_STRTAB_MAXSIZE 268435456L -#define DUK_USE_STRTAB_MINSIZE 1024 -#undef DUK_USE_STRTAB_PTRCOMP -#define DUK_USE_STRTAB_RESIZE_CHECK_MASK 255 -#define DUK_USE_STRTAB_SHRINK_LIMIT 6 -#undef DUK_USE_STRTAB_TORTURE -#define DUK_USE_SYMBOL_BUILTIN -#define DUK_USE_TAILCALL -#define DUK_USE_TARGET_INFO "unknown" -#define DUK_USE_TRACEBACKS -#define DUK_USE_TRACEBACK_DEPTH 10 -#define DUK_USE_VALSTACK_GROW_SHIFT 2 -#define DUK_USE_VALSTACK_LIMIT 1000000L -#define DUK_USE_VALSTACK_SHRINK_CHECK_SHIFT 2 -#define DUK_USE_VALSTACK_SHRINK_SLACK_SHIFT 4 -#undef DUK_USE_VALSTACK_UNSAFE -#define DUK_USE_VERBOSE_ERRORS -#define DUK_USE_VERBOSE_EXECUTOR_ERRORS -#define DUK_USE_VOLUNTARY_GC -#define DUK_USE_ZERO_BUFFER_DATA - -/* - * You may add overriding #define/#undef directives below for - * customization. You of course cannot un-#include or un-typedef - * anything; these require direct changes above. - */ - -/* __OVERRIDE_DEFINES__ */ - -/* - * Conditional includes - */ - -#if defined(DUK_F_CPP) && defined(DUK_USE_CPP_EXCEPTIONS) -#include /* std::exception */ -#include /* std::runtime_error */ -#endif - -/* - * Date provider selection - * - * User may define DUK_USE_DATE_GET_NOW() etc directly, in which case we'll - * rely on an external provider. If this is not done, revert to previous - * behavior and use Unix/Windows built-in provider. - */ - -#if defined(DUK_COMPILING_DUKTAPE) - -#if defined(DUK_USE_DATE_GET_NOW) -/* External provider already defined. */ -#elif defined(DUK_USE_DATE_NOW_GETTIMEOFDAY) -#define DUK_USE_DATE_GET_NOW(ctx) duk_bi_date_get_now_gettimeofday() -#elif defined(DUK_USE_DATE_NOW_TIME) -#define DUK_USE_DATE_GET_NOW(ctx) duk_bi_date_get_now_time() -#elif defined(DUK_USE_DATE_NOW_WINDOWS) -#define DUK_USE_DATE_GET_NOW(ctx) duk_bi_date_get_now_windows() -#elif defined(DUK_USE_DATE_NOW_WINDOWS_SUBMS) -#define DUK_USE_DATE_GET_NOW(ctx) duk_bi_date_get_now_windows_subms() -#else -#error no provider for DUK_USE_DATE_GET_NOW() -#endif - -#if defined(DUK_USE_DATE_GET_LOCAL_TZOFFSET) -/* External provider already defined. */ -#elif defined(DUK_USE_DATE_TZO_GMTIME_R) || defined(DUK_USE_DATE_TZO_GMTIME_S) || defined(DUK_USE_DATE_TZO_GMTIME) -#define DUK_USE_DATE_GET_LOCAL_TZOFFSET(d) duk_bi_date_get_local_tzoffset_gmtime((d)) -#elif defined(DUK_USE_DATE_TZO_WINDOWS) -#define DUK_USE_DATE_GET_LOCAL_TZOFFSET(d) duk_bi_date_get_local_tzoffset_windows((d)) -#elif defined(DUK_USE_DATE_TZO_WINDOWS_NO_DST) -#define DUK_USE_DATE_GET_LOCAL_TZOFFSET(d) duk_bi_date_get_local_tzoffset_windows_no_dst((d)) -#else -#error no provider for DUK_USE_DATE_GET_LOCAL_TZOFFSET() -#endif - -#if defined(DUK_USE_DATE_PARSE_STRING) -/* External provider already defined. */ -#elif defined(DUK_USE_DATE_PRS_STRPTIME) -#define DUK_USE_DATE_PARSE_STRING(ctx,str) duk_bi_date_parse_string_strptime((ctx), (str)) -#elif defined(DUK_USE_DATE_PRS_GETDATE) -#define DUK_USE_DATE_PARSE_STRING(ctx,str) duk_bi_date_parse_string_getdate((ctx), (str)) -#else -/* No provider for DUK_USE_DATE_PARSE_STRING(), fall back to ISO 8601 only. */ -#endif - -#if defined(DUK_USE_DATE_FORMAT_STRING) -/* External provider already defined. */ -#elif defined(DUK_USE_DATE_FMT_STRFTIME) -#define DUK_USE_DATE_FORMAT_STRING(ctx,parts,tzoffset,flags) \ - duk_bi_date_format_parts_strftime((ctx), (parts), (tzoffset), (flags)) -#else -/* No provider for DUK_USE_DATE_FORMAT_STRING(), fall back to ISO 8601 only. */ -#endif - -#if defined(DUK_USE_GET_MONOTONIC_TIME) -/* External provider already defined. */ -#elif defined(DUK_USE_GET_MONOTONIC_TIME_CLOCK_GETTIME) -#define DUK_USE_GET_MONOTONIC_TIME(ctx) duk_bi_date_get_monotonic_time_clock_gettime() -#elif defined(DUK_USE_GET_MONOTONIC_TIME_WINDOWS_QPC) -#define DUK_USE_GET_MONOTONIC_TIME(ctx) duk_bi_date_get_monotonic_time_windows_qpc() -#else -/* No provider for DUK_USE_GET_MONOTONIC_TIME(), fall back to DUK_USE_DATE_GET_NOW(). */ -#endif - -#endif /* DUK_COMPILING_DUKTAPE */ - -/* - * Checks for legacy feature options (DUK_OPT_xxx) - */ - -#if defined(DUK_OPT_ASSERTIONS) -#error unsupported legacy feature option DUK_OPT_ASSERTIONS used -#endif -#if defined(DUK_OPT_BUFFEROBJECT_SUPPORT) -#error unsupported legacy feature option DUK_OPT_BUFFEROBJECT_SUPPORT used -#endif -#if defined(DUK_OPT_BUFLEN16) -#error unsupported legacy feature option DUK_OPT_BUFLEN16 used -#endif -#if defined(DUK_OPT_DATAPTR16) -#error unsupported legacy feature option DUK_OPT_DATAPTR16 used -#endif -#if defined(DUK_OPT_DATAPTR_DEC16) -#error unsupported legacy feature option DUK_OPT_DATAPTR_DEC16 used -#endif -#if defined(DUK_OPT_DATAPTR_ENC16) -#error unsupported legacy feature option DUK_OPT_DATAPTR_ENC16 used -#endif -#if defined(DUK_OPT_DDDPRINT) -#error unsupported legacy feature option DUK_OPT_DDDPRINT used -#endif -#if defined(DUK_OPT_DDPRINT) -#error unsupported legacy feature option DUK_OPT_DDPRINT used -#endif -#if defined(DUK_OPT_DEBUG) -#error unsupported legacy feature option DUK_OPT_DEBUG used -#endif -#if defined(DUK_OPT_DEBUGGER_DUMPHEAP) -#error unsupported legacy feature option DUK_OPT_DEBUGGER_DUMPHEAP used -#endif -#if defined(DUK_OPT_DEBUGGER_FWD_LOGGING) -#error unsupported legacy feature option DUK_OPT_DEBUGGER_FWD_LOGGING used -#endif -#if defined(DUK_OPT_DEBUGGER_FWD_PRINTALERT) -#error unsupported legacy feature option DUK_OPT_DEBUGGER_FWD_PRINTALERT used -#endif -#if defined(DUK_OPT_DEBUGGER_SUPPORT) -#error unsupported legacy feature option DUK_OPT_DEBUGGER_SUPPORT used -#endif -#if defined(DUK_OPT_DEBUGGER_TRANSPORT_TORTURE) -#error unsupported legacy feature option DUK_OPT_DEBUGGER_TRANSPORT_TORTURE used -#endif -#if defined(DUK_OPT_DEBUG_BUFSIZE) -#error unsupported legacy feature option DUK_OPT_DEBUG_BUFSIZE used -#endif -#if defined(DUK_OPT_DECLARE) -#error unsupported legacy feature option DUK_OPT_DECLARE used -#endif -#if defined(DUK_OPT_DEEP_C_STACK) -#error unsupported legacy feature option DUK_OPT_DEEP_C_STACK used -#endif -#if defined(DUK_OPT_DLL_BUILD) -#error unsupported legacy feature option DUK_OPT_DLL_BUILD used -#endif -#if defined(DUK_OPT_DPRINT) -#error unsupported legacy feature option DUK_OPT_DPRINT used -#endif -#if defined(DUK_OPT_DPRINT_COLORS) -#error unsupported legacy feature option DUK_OPT_DPRINT_COLORS used -#endif -#if defined(DUK_OPT_DPRINT_RDTSC) -#error unsupported legacy feature option DUK_OPT_DPRINT_RDTSC used -#endif -#if defined(DUK_OPT_EXEC_TIMEOUT_CHECK) -#error unsupported legacy feature option DUK_OPT_EXEC_TIMEOUT_CHECK used -#endif -#if defined(DUK_OPT_EXTERNAL_STRINGS) -#error unsupported legacy feature option DUK_OPT_EXTERNAL_STRINGS used -#endif -#if defined(DUK_OPT_EXTSTR_FREE) -#error unsupported legacy feature option DUK_OPT_EXTSTR_FREE used -#endif -#if defined(DUK_OPT_EXTSTR_INTERN_CHECK) -#error unsupported legacy feature option DUK_OPT_EXTSTR_INTERN_CHECK used -#endif -#if defined(DUK_OPT_FASTINT) -#error unsupported legacy feature option DUK_OPT_FASTINT used -#endif -#if defined(DUK_OPT_FORCE_ALIGN) -#error unsupported legacy feature option DUK_OPT_FORCE_ALIGN used -#endif -#if defined(DUK_OPT_FORCE_BYTEORDER) -#error unsupported legacy feature option DUK_OPT_FORCE_BYTEORDER used -#endif -#if defined(DUK_OPT_FUNCPTR16) -#error unsupported legacy feature option DUK_OPT_FUNCPTR16 used -#endif -#if defined(DUK_OPT_FUNCPTR_DEC16) -#error unsupported legacy feature option DUK_OPT_FUNCPTR_DEC16 used -#endif -#if defined(DUK_OPT_FUNCPTR_ENC16) -#error unsupported legacy feature option DUK_OPT_FUNCPTR_ENC16 used -#endif -#if defined(DUK_OPT_FUNC_NONSTD_CALLER_PROPERTY) -#error unsupported legacy feature option DUK_OPT_FUNC_NONSTD_CALLER_PROPERTY used -#endif -#if defined(DUK_OPT_FUNC_NONSTD_SOURCE_PROPERTY) -#error unsupported legacy feature option DUK_OPT_FUNC_NONSTD_SOURCE_PROPERTY used -#endif -#if defined(DUK_OPT_GC_TORTURE) -#error unsupported legacy feature option DUK_OPT_GC_TORTURE used -#endif -#if defined(DUK_OPT_HAVE_CUSTOM_H) -#error unsupported legacy feature option DUK_OPT_HAVE_CUSTOM_H used -#endif -#if defined(DUK_OPT_HEAPPTR16) -#error unsupported legacy feature option DUK_OPT_HEAPPTR16 used -#endif -#if defined(DUK_OPT_HEAPPTR_DEC16) -#error unsupported legacy feature option DUK_OPT_HEAPPTR_DEC16 used -#endif -#if defined(DUK_OPT_HEAPPTR_ENC16) -#error unsupported legacy feature option DUK_OPT_HEAPPTR_ENC16 used -#endif -#if defined(DUK_OPT_INTERRUPT_COUNTER) -#error unsupported legacy feature option DUK_OPT_INTERRUPT_COUNTER used -#endif -#if defined(DUK_OPT_JSON_STRINGIFY_FASTPATH) -#error unsupported legacy feature option DUK_OPT_JSON_STRINGIFY_FASTPATH used -#endif -#if defined(DUK_OPT_LIGHTFUNC_BUILTINS) -#error unsupported legacy feature option DUK_OPT_LIGHTFUNC_BUILTINS used -#endif -#if defined(DUK_OPT_NONSTD_FUNC_CALLER_PROPERTY) -#error unsupported legacy feature option DUK_OPT_NONSTD_FUNC_CALLER_PROPERTY used -#endif -#if defined(DUK_OPT_NONSTD_FUNC_SOURCE_PROPERTY) -#error unsupported legacy feature option DUK_OPT_NONSTD_FUNC_SOURCE_PROPERTY used -#endif -#if defined(DUK_OPT_NO_ARRAY_SPLICE_NONSTD_DELCOUNT) -#error unsupported legacy feature option DUK_OPT_NO_ARRAY_SPLICE_NONSTD_DELCOUNT used -#endif -#if defined(DUK_OPT_NO_AUGMENT_ERRORS) -#error unsupported legacy feature option DUK_OPT_NO_AUGMENT_ERRORS used -#endif -#if defined(DUK_OPT_NO_BROWSER_LIKE) -#error unsupported legacy feature option DUK_OPT_NO_BROWSER_LIKE used -#endif -#if defined(DUK_OPT_NO_BUFFEROBJECT_SUPPORT) -#error unsupported legacy feature option DUK_OPT_NO_BUFFEROBJECT_SUPPORT used -#endif -#if defined(DUK_OPT_NO_BYTECODE_DUMP_SUPPORT) -#error unsupported legacy feature option DUK_OPT_NO_BYTECODE_DUMP_SUPPORT used -#endif -#if defined(DUK_OPT_NO_COMMONJS_MODULES) -#error unsupported legacy feature option DUK_OPT_NO_COMMONJS_MODULES used -#endif -#if defined(DUK_OPT_NO_ES6_OBJECT_PROTO_PROPERTY) -#error unsupported legacy feature option DUK_OPT_NO_ES6_OBJECT_PROTO_PROPERTY used -#endif -#if defined(DUK_OPT_NO_ES6_OBJECT_SETPROTOTYPEOF) -#error unsupported legacy feature option DUK_OPT_NO_ES6_OBJECT_SETPROTOTYPEOF used -#endif -#if defined(DUK_OPT_NO_ES6_PROXY) -#error unsupported legacy feature option DUK_OPT_NO_ES6_PROXY used -#endif -#if defined(DUK_OPT_NO_FILE_IO) -#error unsupported legacy feature option DUK_OPT_NO_FILE_IO used -#endif -#if defined(DUK_OPT_NO_FUNC_STMT) -#error unsupported legacy feature option DUK_OPT_NO_FUNC_STMT used -#endif -#if defined(DUK_OPT_NO_JC) -#error unsupported legacy feature option DUK_OPT_NO_JC used -#endif -#if defined(DUK_OPT_NO_JSONC) -#error unsupported legacy feature option DUK_OPT_NO_JSONC used -#endif -#if defined(DUK_OPT_NO_JSONX) -#error unsupported legacy feature option DUK_OPT_NO_JSONX used -#endif -#if defined(DUK_OPT_NO_JX) -#error unsupported legacy feature option DUK_OPT_NO_JX used -#endif -#if defined(DUK_OPT_NO_MARK_AND_SWEEP) -#error unsupported legacy feature option DUK_OPT_NO_MARK_AND_SWEEP used -#endif -#if defined(DUK_OPT_NO_MS_STRINGTABLE_RESIZE) -#error unsupported legacy feature option DUK_OPT_NO_MS_STRINGTABLE_RESIZE used -#endif -#if defined(DUK_OPT_NO_NONSTD_ACCESSOR_KEY_ARGUMENT) -#error unsupported legacy feature option DUK_OPT_NO_NONSTD_ACCESSOR_KEY_ARGUMENT used -#endif -#if defined(DUK_OPT_NO_NONSTD_ARRAY_CONCAT_TRAILER) -#error unsupported legacy feature option DUK_OPT_NO_NONSTD_ARRAY_CONCAT_TRAILER used -#endif -#if defined(DUK_OPT_NO_NONSTD_ARRAY_MAP_TRAILER) -#error unsupported legacy feature option DUK_OPT_NO_NONSTD_ARRAY_MAP_TRAILER used -#endif -#if defined(DUK_OPT_NO_NONSTD_ARRAY_SPLICE_DELCOUNT) -#error unsupported legacy feature option DUK_OPT_NO_NONSTD_ARRAY_SPLICE_DELCOUNT used -#endif -#if defined(DUK_OPT_NO_NONSTD_FUNC_STMT) -#error unsupported legacy feature option DUK_OPT_NO_NONSTD_FUNC_STMT used -#endif -#if defined(DUK_OPT_NO_NONSTD_JSON_ESC_U2028_U2029) -#error unsupported legacy feature option DUK_OPT_NO_NONSTD_JSON_ESC_U2028_U2029 used -#endif -#if defined(DUK_OPT_NO_NONSTD_STRING_FROMCHARCODE_32BIT) -#error unsupported legacy feature option DUK_OPT_NO_NONSTD_STRING_FROMCHARCODE_32BIT used -#endif -#if defined(DUK_OPT_NO_OBJECT_ES6_PROTO_PROPERTY) -#error unsupported legacy feature option DUK_OPT_NO_OBJECT_ES6_PROTO_PROPERTY used -#endif -#if defined(DUK_OPT_NO_OBJECT_ES6_SETPROTOTYPEOF) -#error unsupported legacy feature option DUK_OPT_NO_OBJECT_ES6_SETPROTOTYPEOF used -#endif -#if defined(DUK_OPT_NO_OCTAL_SUPPORT) -#error unsupported legacy feature option DUK_OPT_NO_OCTAL_SUPPORT used -#endif -#if defined(DUK_OPT_NO_PACKED_TVAL) -#error unsupported legacy feature option DUK_OPT_NO_PACKED_TVAL used -#endif -#if defined(DUK_OPT_NO_PC2LINE) -#error unsupported legacy feature option DUK_OPT_NO_PC2LINE used -#endif -#if defined(DUK_OPT_NO_REFERENCE_COUNTING) -#error unsupported legacy feature option DUK_OPT_NO_REFERENCE_COUNTING used -#endif -#if defined(DUK_OPT_NO_REGEXP_SUPPORT) -#error unsupported legacy feature option DUK_OPT_NO_REGEXP_SUPPORT used -#endif -#if defined(DUK_OPT_NO_SECTION_B) -#error unsupported legacy feature option DUK_OPT_NO_SECTION_B used -#endif -#if defined(DUK_OPT_NO_SOURCE_NONBMP) -#error unsupported legacy feature option DUK_OPT_NO_SOURCE_NONBMP used -#endif -#if defined(DUK_OPT_NO_STRICT_DECL) -#error unsupported legacy feature option DUK_OPT_NO_STRICT_DECL used -#endif -#if defined(DUK_OPT_NO_TRACEBACKS) -#error unsupported legacy feature option DUK_OPT_NO_TRACEBACKS used -#endif -#if defined(DUK_OPT_NO_VERBOSE_ERRORS) -#error unsupported legacy feature option DUK_OPT_NO_VERBOSE_ERRORS used -#endif -#if defined(DUK_OPT_NO_VOLUNTARY_GC) -#error unsupported legacy feature option DUK_OPT_NO_VOLUNTARY_GC used -#endif -#if defined(DUK_OPT_NO_ZERO_BUFFER_DATA) -#error unsupported legacy feature option DUK_OPT_NO_ZERO_BUFFER_DATA used -#endif -#if defined(DUK_OPT_OBJSIZES16) -#error unsupported legacy feature option DUK_OPT_OBJSIZES16 used -#endif -#if defined(DUK_OPT_PANIC_HANDLER) -#error unsupported legacy feature option DUK_OPT_PANIC_HANDLER used -#endif -#if defined(DUK_OPT_REFCOUNT16) -#error unsupported legacy feature option DUK_OPT_REFCOUNT16 used -#endif -#if defined(DUK_OPT_SEGFAULT_ON_PANIC) -#error unsupported legacy feature option DUK_OPT_SEGFAULT_ON_PANIC used -#endif -#if defined(DUK_OPT_SELF_TESTS) -#error unsupported legacy feature option DUK_OPT_SELF_TESTS used -#endif -#if defined(DUK_OPT_SETJMP) -#error unsupported legacy feature option DUK_OPT_SETJMP used -#endif -#if defined(DUK_OPT_SHUFFLE_TORTURE) -#error unsupported legacy feature option DUK_OPT_SHUFFLE_TORTURE used -#endif -#if defined(DUK_OPT_SIGSETJMP) -#error unsupported legacy feature option DUK_OPT_SIGSETJMP used -#endif -#if defined(DUK_OPT_STRHASH16) -#error unsupported legacy feature option DUK_OPT_STRHASH16 used -#endif -#if defined(DUK_OPT_STRICT_UTF8_SOURCE) -#error unsupported legacy feature option DUK_OPT_STRICT_UTF8_SOURCE used -#endif -#if defined(DUK_OPT_STRLEN16) -#error unsupported legacy feature option DUK_OPT_STRLEN16 used -#endif -#if defined(DUK_OPT_STRTAB_CHAIN) -#error unsupported legacy feature option DUK_OPT_STRTAB_CHAIN used -#endif -#if defined(DUK_OPT_STRTAB_CHAIN_SIZE) -#error unsupported legacy feature option DUK_OPT_STRTAB_CHAIN_SIZE used -#endif -#if defined(DUK_OPT_TARGET_INFO) -#error unsupported legacy feature option DUK_OPT_TARGET_INFO used -#endif -#if defined(DUK_OPT_TRACEBACK_DEPTH) -#error unsupported legacy feature option DUK_OPT_TRACEBACK_DEPTH used -#endif -#if defined(DUK_OPT_UNDERSCORE_SETJMP) -#error unsupported legacy feature option DUK_OPT_UNDERSCORE_SETJMP used -#endif -#if defined(DUK_OPT_USER_INITJS) -#error unsupported legacy feature option DUK_OPT_USER_INITJS used -#endif - -/* - * Checks for config option consistency (DUK_USE_xxx) - */ - -#if defined(DUK_USE_32BIT_PTRS) -#error unsupported config option used (option has been removed): DUK_USE_32BIT_PTRS -#endif -#if defined(DUK_USE_ALIGN_4) -#error unsupported config option used (option has been removed): DUK_USE_ALIGN_4 -#endif -#if defined(DUK_USE_ALIGN_8) -#error unsupported config option used (option has been removed): DUK_USE_ALIGN_8 -#endif -#if defined(DUK_USE_BROWSER_LIKE) -#error unsupported config option used (option has been removed): DUK_USE_BROWSER_LIKE -#endif -#if defined(DUK_USE_BUILTIN_INITJS) -#error unsupported config option used (option has been removed): DUK_USE_BUILTIN_INITJS -#endif -#if defined(DUK_USE_BYTEORDER_FORCED) -#error unsupported config option used (option has been removed): DUK_USE_BYTEORDER_FORCED -#endif -#if defined(DUK_USE_COMMONJS_MODULES) -#error unsupported config option used (option has been removed): DUK_USE_COMMONJS_MODULES -#endif -#if defined(DUK_USE_DATAPTR_DEC16) && !defined(DUK_USE_DATAPTR16) -#error config option DUK_USE_DATAPTR_DEC16 requires option DUK_USE_DATAPTR16 (which is missing) -#endif -#if defined(DUK_USE_DATAPTR_ENC16) && !defined(DUK_USE_DATAPTR16) -#error config option DUK_USE_DATAPTR_ENC16 requires option DUK_USE_DATAPTR16 (which is missing) -#endif -#if defined(DUK_USE_DDDPRINT) -#error unsupported config option used (option has been removed): DUK_USE_DDDPRINT -#endif -#if defined(DUK_USE_DDPRINT) -#error unsupported config option used (option has been removed): DUK_USE_DDPRINT -#endif -#if defined(DUK_USE_DEBUGGER_FWD_LOGGING) -#error unsupported config option used (option has been removed): DUK_USE_DEBUGGER_FWD_LOGGING -#endif -#if defined(DUK_USE_DEBUGGER_FWD_PRINTALERT) -#error unsupported config option used (option has been removed): DUK_USE_DEBUGGER_FWD_PRINTALERT -#endif -#if defined(DUK_USE_DEBUGGER_SUPPORT) && !defined(DUK_USE_INTERRUPT_COUNTER) -#error config option DUK_USE_DEBUGGER_SUPPORT requires option DUK_USE_INTERRUPT_COUNTER (which is missing) -#endif -#if defined(DUK_USE_DEEP_C_STACK) -#error unsupported config option used (option has been removed): DUK_USE_DEEP_C_STACK -#endif -#if defined(DUK_USE_DOUBLE_BE) -#error unsupported config option used (option has been removed): DUK_USE_DOUBLE_BE -#endif -#if defined(DUK_USE_DOUBLE_BE) && defined(DUK_USE_DOUBLE_LE) -#error config option DUK_USE_DOUBLE_BE conflicts with option DUK_USE_DOUBLE_LE (which is also defined) -#endif -#if defined(DUK_USE_DOUBLE_BE) && defined(DUK_USE_DOUBLE_ME) -#error config option DUK_USE_DOUBLE_BE conflicts with option DUK_USE_DOUBLE_ME (which is also defined) -#endif -#if defined(DUK_USE_DOUBLE_LE) -#error unsupported config option used (option has been removed): DUK_USE_DOUBLE_LE -#endif -#if defined(DUK_USE_DOUBLE_LE) && defined(DUK_USE_DOUBLE_BE) -#error config option DUK_USE_DOUBLE_LE conflicts with option DUK_USE_DOUBLE_BE (which is also defined) -#endif -#if defined(DUK_USE_DOUBLE_LE) && defined(DUK_USE_DOUBLE_ME) -#error config option DUK_USE_DOUBLE_LE conflicts with option DUK_USE_DOUBLE_ME (which is also defined) -#endif -#if defined(DUK_USE_DOUBLE_ME) -#error unsupported config option used (option has been removed): DUK_USE_DOUBLE_ME -#endif -#if defined(DUK_USE_DOUBLE_ME) && defined(DUK_USE_DOUBLE_LE) -#error config option DUK_USE_DOUBLE_ME conflicts with option DUK_USE_DOUBLE_LE (which is also defined) -#endif -#if defined(DUK_USE_DOUBLE_ME) && defined(DUK_USE_DOUBLE_BE) -#error config option DUK_USE_DOUBLE_ME conflicts with option DUK_USE_DOUBLE_BE (which is also defined) -#endif -#if defined(DUK_USE_DPRINT) -#error unsupported config option used (option has been removed): DUK_USE_DPRINT -#endif -#if defined(DUK_USE_DPRINT) && !defined(DUK_USE_DEBUG) -#error config option DUK_USE_DPRINT requires option DUK_USE_DEBUG (which is missing) -#endif -#if defined(DUK_USE_DPRINT_COLORS) -#error unsupported config option used (option has been removed): DUK_USE_DPRINT_COLORS -#endif -#if defined(DUK_USE_DPRINT_RDTSC) -#error unsupported config option used (option has been removed): DUK_USE_DPRINT_RDTSC -#endif -#if defined(DUK_USE_ES6_REGEXP_BRACES) -#error unsupported config option used (option has been removed): DUK_USE_ES6_REGEXP_BRACES -#endif -#if defined(DUK_USE_ESBC_MAX_BYTES) && !defined(DUK_USE_ESBC_LIMITS) -#error config option DUK_USE_ESBC_MAX_BYTES requires option DUK_USE_ESBC_LIMITS (which is missing) -#endif -#if defined(DUK_USE_ESBC_MAX_LINENUMBER) && !defined(DUK_USE_ESBC_LIMITS) -#error config option DUK_USE_ESBC_MAX_LINENUMBER requires option DUK_USE_ESBC_LIMITS (which is missing) -#endif -#if defined(DUK_USE_EXEC_TIMEOUT_CHECK) && !defined(DUK_USE_INTERRUPT_COUNTER) -#error config option DUK_USE_EXEC_TIMEOUT_CHECK requires option DUK_USE_INTERRUPT_COUNTER (which is missing) -#endif -#if defined(DUK_USE_EXTSTR_FREE) && !defined(DUK_USE_HSTRING_EXTDATA) -#error config option DUK_USE_EXTSTR_FREE requires option DUK_USE_HSTRING_EXTDATA (which is missing) -#endif -#if defined(DUK_USE_EXTSTR_INTERN_CHECK) && !defined(DUK_USE_HSTRING_EXTDATA) -#error config option DUK_USE_EXTSTR_INTERN_CHECK requires option DUK_USE_HSTRING_EXTDATA (which is missing) -#endif -#if defined(DUK_USE_FASTINT) && !defined(DUK_USE_64BIT_OPS) -#error config option DUK_USE_FASTINT requires option DUK_USE_64BIT_OPS (which is missing) -#endif -#if defined(DUK_USE_FILE_IO) -#error unsupported config option used (option has been removed): DUK_USE_FILE_IO -#endif -#if defined(DUK_USE_FULL_TVAL) -#error unsupported config option used (option has been removed): DUK_USE_FULL_TVAL -#endif -#if defined(DUK_USE_FUNCPTR_DEC16) && !defined(DUK_USE_FUNCPTR16) -#error config option DUK_USE_FUNCPTR_DEC16 requires option DUK_USE_FUNCPTR16 (which is missing) -#endif -#if defined(DUK_USE_FUNCPTR_ENC16) && !defined(DUK_USE_FUNCPTR16) -#error config option DUK_USE_FUNCPTR_ENC16 requires option DUK_USE_FUNCPTR16 (which is missing) -#endif -#if defined(DUK_USE_HASHBYTES_UNALIGNED_U32_ACCESS) -#error unsupported config option used (option has been removed): DUK_USE_HASHBYTES_UNALIGNED_U32_ACCESS -#endif -#if defined(DUK_USE_HEAPPTR16) && defined(DUK_USE_DEBUG) -#error config option DUK_USE_HEAPPTR16 conflicts with option DUK_USE_DEBUG (which is also defined) -#endif -#if defined(DUK_USE_HEAPPTR_DEC16) && !defined(DUK_USE_HEAPPTR16) -#error config option DUK_USE_HEAPPTR_DEC16 requires option DUK_USE_HEAPPTR16 (which is missing) -#endif -#if defined(DUK_USE_HEAPPTR_ENC16) && !defined(DUK_USE_HEAPPTR16) -#error config option DUK_USE_HEAPPTR_ENC16 requires option DUK_USE_HEAPPTR16 (which is missing) -#endif -#if defined(DUK_USE_INTEGER_BE) -#error unsupported config option used (option has been removed): DUK_USE_INTEGER_BE -#endif -#if defined(DUK_USE_INTEGER_BE) && defined(DUK_USE_INTEGER_LE) -#error config option DUK_USE_INTEGER_BE conflicts with option DUK_USE_INTEGER_LE (which is also defined) -#endif -#if defined(DUK_USE_INTEGER_BE) && defined(DUK_USE_INTEGER_ME) -#error config option DUK_USE_INTEGER_BE conflicts with option DUK_USE_INTEGER_ME (which is also defined) -#endif -#if defined(DUK_USE_INTEGER_LE) -#error unsupported config option used (option has been removed): DUK_USE_INTEGER_LE -#endif -#if defined(DUK_USE_INTEGER_LE) && defined(DUK_USE_INTEGER_BE) -#error config option DUK_USE_INTEGER_LE conflicts with option DUK_USE_INTEGER_BE (which is also defined) -#endif -#if defined(DUK_USE_INTEGER_LE) && defined(DUK_USE_INTEGER_ME) -#error config option DUK_USE_INTEGER_LE conflicts with option DUK_USE_INTEGER_ME (which is also defined) -#endif -#if defined(DUK_USE_INTEGER_ME) -#error unsupported config option used (option has been removed): DUK_USE_INTEGER_ME -#endif -#if defined(DUK_USE_INTEGER_ME) && defined(DUK_USE_INTEGER_LE) -#error config option DUK_USE_INTEGER_ME conflicts with option DUK_USE_INTEGER_LE (which is also defined) -#endif -#if defined(DUK_USE_INTEGER_ME) && defined(DUK_USE_INTEGER_BE) -#error config option DUK_USE_INTEGER_ME conflicts with option DUK_USE_INTEGER_BE (which is also defined) -#endif -#if defined(DUK_USE_MARKANDSWEEP_FINALIZER_TORTURE) -#error unsupported config option used (option has been removed): DUK_USE_MARKANDSWEEP_FINALIZER_TORTURE -#endif -#if defined(DUK_USE_MARK_AND_SWEEP) -#error unsupported config option used (option has been removed): DUK_USE_MARK_AND_SWEEP -#endif -#if defined(DUK_USE_MATH_FMAX) -#error unsupported config option used (option has been removed): DUK_USE_MATH_FMAX -#endif -#if defined(DUK_USE_MATH_FMIN) -#error unsupported config option used (option has been removed): DUK_USE_MATH_FMIN -#endif -#if defined(DUK_USE_MATH_ROUND) -#error unsupported config option used (option has been removed): DUK_USE_MATH_ROUND -#endif -#if defined(DUK_USE_MS_STRINGTABLE_RESIZE) -#error unsupported config option used (option has been removed): DUK_USE_MS_STRINGTABLE_RESIZE -#endif -#if defined(DUK_USE_NONSTD_ARRAY_CONCAT_TRAILER) -#error unsupported config option used (option has been removed): DUK_USE_NONSTD_ARRAY_CONCAT_TRAILER -#endif -#if defined(DUK_USE_NONSTD_ARRAY_MAP_TRAILER) -#error unsupported config option used (option has been removed): DUK_USE_NONSTD_ARRAY_MAP_TRAILER -#endif -#if defined(DUK_USE_NONSTD_REGEXP_DOLLAR_ESCAPE) -#error unsupported config option used (option has been removed): DUK_USE_NONSTD_REGEXP_DOLLAR_ESCAPE -#endif -#if defined(DUK_USE_NO_DOUBLE_ALIASING_SELFTEST) -#error unsupported config option used (option has been removed): DUK_USE_NO_DOUBLE_ALIASING_SELFTEST -#endif -#if defined(DUK_USE_OCTAL_SUPPORT) -#error unsupported config option used (option has been removed): DUK_USE_OCTAL_SUPPORT -#endif -#if defined(DUK_USE_PACKED_TVAL_POSSIBLE) -#error unsupported config option used (option has been removed): DUK_USE_PACKED_TVAL_POSSIBLE -#endif -#if defined(DUK_USE_PANIC_ABORT) -#error unsupported config option used (option has been removed): DUK_USE_PANIC_ABORT -#endif -#if defined(DUK_USE_PANIC_EXIT) -#error unsupported config option used (option has been removed): DUK_USE_PANIC_EXIT -#endif -#if defined(DUK_USE_PANIC_HANDLER) -#error unsupported config option used (option has been removed): DUK_USE_PANIC_HANDLER -#endif -#if defined(DUK_USE_PANIC_SEGFAULT) -#error unsupported config option used (option has been removed): DUK_USE_PANIC_SEGFAULT -#endif -#if defined(DUK_USE_POW_NETBSD_WORKAROUND) -#error unsupported config option used (option has been removed): DUK_USE_POW_NETBSD_WORKAROUND -#endif -#if defined(DUK_USE_RDTSC) -#error unsupported config option used (option has been removed): DUK_USE_RDTSC -#endif -#if defined(DUK_USE_REFZERO_FINALIZER_TORTURE) -#error unsupported config option used (option has been removed): DUK_USE_REFZERO_FINALIZER_TORTURE -#endif -#if defined(DUK_USE_ROM_GLOBAL_CLONE) && !defined(DUK_USE_ROM_STRINGS) -#error config option DUK_USE_ROM_GLOBAL_CLONE requires option DUK_USE_ROM_STRINGS (which is missing) -#endif -#if defined(DUK_USE_ROM_GLOBAL_CLONE) && !defined(DUK_USE_ROM_OBJECTS) -#error config option DUK_USE_ROM_GLOBAL_CLONE requires option DUK_USE_ROM_OBJECTS (which is missing) -#endif -#if defined(DUK_USE_ROM_GLOBAL_CLONE) && defined(DUK_USE_ROM_GLOBAL_INHERIT) -#error config option DUK_USE_ROM_GLOBAL_CLONE conflicts with option DUK_USE_ROM_GLOBAL_INHERIT (which is also defined) -#endif -#if defined(DUK_USE_ROM_GLOBAL_INHERIT) && !defined(DUK_USE_ROM_STRINGS) -#error config option DUK_USE_ROM_GLOBAL_INHERIT requires option DUK_USE_ROM_STRINGS (which is missing) -#endif -#if defined(DUK_USE_ROM_GLOBAL_INHERIT) && !defined(DUK_USE_ROM_OBJECTS) -#error config option DUK_USE_ROM_GLOBAL_INHERIT requires option DUK_USE_ROM_OBJECTS (which is missing) -#endif -#if defined(DUK_USE_ROM_GLOBAL_INHERIT) && defined(DUK_USE_ROM_GLOBAL_CLONE) -#error config option DUK_USE_ROM_GLOBAL_INHERIT conflicts with option DUK_USE_ROM_GLOBAL_CLONE (which is also defined) -#endif -#if defined(DUK_USE_ROM_OBJECTS) && !defined(DUK_USE_ROM_STRINGS) -#error config option DUK_USE_ROM_OBJECTS requires option DUK_USE_ROM_STRINGS (which is missing) -#endif -#if defined(DUK_USE_ROM_STRINGS) && !defined(DUK_USE_ROM_OBJECTS) -#error config option DUK_USE_ROM_STRINGS requires option DUK_USE_ROM_OBJECTS (which is missing) -#endif -#if defined(DUK_USE_SETJMP) -#error unsupported config option used (option has been removed): DUK_USE_SETJMP -#endif -#if defined(DUK_USE_SIGSETJMP) -#error unsupported config option used (option has been removed): DUK_USE_SIGSETJMP -#endif -#if defined(DUK_USE_STRTAB_CHAIN) -#error unsupported config option used (option has been removed): DUK_USE_STRTAB_CHAIN -#endif -#if defined(DUK_USE_STRTAB_CHAIN_SIZE) -#error unsupported config option used (option has been removed): DUK_USE_STRTAB_CHAIN_SIZE -#endif -#if defined(DUK_USE_STRTAB_CHAIN_SIZE) && !defined(DUK_USE_STRTAB_CHAIN) -#error config option DUK_USE_STRTAB_CHAIN_SIZE requires option DUK_USE_STRTAB_CHAIN (which is missing) -#endif -#if defined(DUK_USE_STRTAB_PROBE) -#error unsupported config option used (option has been removed): DUK_USE_STRTAB_PROBE -#endif -#if defined(DUK_USE_STRTAB_PTRCOMP) && !defined(DUK_USE_HEAPPTR16) -#error config option DUK_USE_STRTAB_PTRCOMP requires option DUK_USE_HEAPPTR16 (which is missing) -#endif -#if defined(DUK_USE_TAILCALL) && defined(DUK_USE_NONSTD_FUNC_CALLER_PROPERTY) -#error config option DUK_USE_TAILCALL conflicts with option DUK_USE_NONSTD_FUNC_CALLER_PROPERTY (which is also defined) -#endif -#if defined(DUK_USE_UNALIGNED_ACCESSES_POSSIBLE) -#error unsupported config option used (option has been removed): DUK_USE_UNALIGNED_ACCESSES_POSSIBLE -#endif -#if defined(DUK_USE_UNDERSCORE_SETJMP) -#error unsupported config option used (option has been removed): DUK_USE_UNDERSCORE_SETJMP -#endif -#if defined(DUK_USE_USER_DECLARE) -#error unsupported config option used (option has been removed): DUK_USE_USER_DECLARE -#endif -#if defined(DUK_USE_USER_INITJS) -#error unsupported config option used (option has been removed): DUK_USE_USER_INITJS -#endif - -#if defined(DUK_USE_CPP_EXCEPTIONS) && !defined(__cplusplus) -#error DUK_USE_CPP_EXCEPTIONS enabled but not compiling with a C++ compiler -#endif - -/* - * Convert DUK_USE_BYTEORDER, from whatever source, into currently used - * internal defines. If detection failed, #error out. - */ - -#if defined(DUK_USE_BYTEORDER) -#if (DUK_USE_BYTEORDER == 1) -#define DUK_USE_INTEGER_LE -#define DUK_USE_DOUBLE_LE -#elif (DUK_USE_BYTEORDER == 2) -#define DUK_USE_INTEGER_LE /* integer endianness is little on purpose */ -#define DUK_USE_DOUBLE_ME -#elif (DUK_USE_BYTEORDER == 3) -#define DUK_USE_INTEGER_BE -#define DUK_USE_DOUBLE_BE -#else -#error unsupported: byte order invalid -#endif /* byte order */ -#else -#error unsupported: byte order detection failed -#endif /* defined(DUK_USE_BYTEORDER) */ - -#endif /* DUK_CONFIG_H_INCLUDED */ diff --git a/source/engine/duktape.c b/source/engine/duktape.c deleted file mode 100644 index 573e70c..0000000 --- a/source/engine/duktape.c +++ /dev/null @@ -1,101351 +0,0 @@ -/* - * Single source autogenerated distributable for Duktape 2.7.0. - * - * Git commit 03d4d728f8365021de6955c649e6dcd05dcca99f (03d4d72-dirty). - * Git branch HEAD. - * - * See Duktape AUTHORS.rst and LICENSE.txt for copyright and - * licensing information. - */ - -/* LICENSE.txt */ -/* -* =============== -* Duktape license -* =============== -* -* (http://opensource.org/licenses/MIT) -* -* Copyright (c) 2013-present by Duktape authors (see AUTHORS.rst) -* -* Permission is hereby granted, free of charge, to any person obtaining a copy -* of this software and associated documentation files (the "Software"), to deal -* in the Software without restriction, including without limitation the rights -* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -* copies of the Software, and to permit persons to whom the Software is -* furnished to do so, subject to the following conditions: -* -* The above copyright notice and this permission notice shall be included in -* all copies or substantial portions of the Software. -* -* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -* THE SOFTWARE. -*/ - -/* AUTHORS.rst */ -/* -* =============== -* Duktape authors -* =============== -* -* Copyright -* ========= -* -* Duktape copyrights are held by its authors. Each author has a copyright -* to their contribution, and agrees to irrevocably license the contribution -* under the Duktape ``LICENSE.txt``. -* -* Authors -* ======= -* -* Please include an e-mail address, a link to your GitHub profile, or something -* similar to allow your contribution to be identified accurately. -* -* The following people have contributed code, website contents, or Wiki contents, -* and agreed to irrevocably license their contributions under the Duktape -* ``LICENSE.txt`` (in order of appearance): -* -* * Sami Vaarala -* * Niki Dobrev -* * Andreas \u00d6man -* * L\u00e1szl\u00f3 Lang\u00f3 -* * Legimet -* * Karl Skomski -* * Bruce Pascoe -* * Ren\u00e9 Hollander -* * Julien Hamaide (https://github.com/crazyjul) -* * Sebastian G\u00f6tte (https://github.com/jaseg) -* * Tomasz Magulski (https://github.com/magul) -* * \D. Bohdan (https://github.com/dbohdan) -* * Ond\u0159ej Jirman (https://github.com/megous) -* * Sa\u00fal Ibarra Corretg\u00e9 -* * Jeremy HU -* * Ole Andr\u00e9 Vadla Ravn\u00e5s (https://github.com/oleavr) -* * Harold Brenes (https://github.com/harold-b) -* * Oliver Crow (https://github.com/ocrow) -* * Jakub Ch\u0142api\u0144ski (https://github.com/jchlapinski) -* * Brett Vickers (https://github.com/beevik) -* * Dominik Okwieka (https://github.com/okitec) -* * Remko Tron\u00e7on (https://el-tramo.be) -* * Romero Malaquias (rbsm@ic.ufal.br) -* * Michael Drake -* * Steven Don (https://github.com/shdon) -* * Simon Stone (https://github.com/sstone1) -* * \J. McC. (https://github.com/jmhmccr) -* * Jakub Nowakowski (https://github.com/jimvonmoon) -* * Tommy Nguyen (https://github.com/tn0502) -* * Fabrice Fontaine (https://github.com/ffontaine) -* * Christopher Hiller (https://github.com/boneskull) -* * Gonzalo Diethelm (https://github.com/gonzus) -* * Michal Kasperek (https://github.com/michalkas) -* * Andrew Janke (https://github.com/apjanke) -* * Steve Fan (https://github.com/stevefan1999) -* * Edward Betts (https://github.com/edwardbetts) -* * Ozhan Duz (https://github.com/webfolderio) -* * Akos Kiss (https://github.com/akosthekiss) -* * TheBrokenRail (https://github.com/TheBrokenRail) -* * Jesse Doyle (https://github.com/jessedoyle) -* * Gero Kuehn (https://github.com/dc6jgk) -* * James Swift (https://github.com/phraemer) -* * Luis de Bethencourt (https://github.com/luisbg) -* * Ian Whyman (https://github.com/v00d00) -* * Rick Sayre (https://github.com/whorfin) -* * Craig Leres (https://github.com/leres) -* * Maurici Abad (https://github.com/mauriciabad) -* * Nancy Li (https://github.com/NancyLi1013) -* * William Parks (https://github.com/WilliamParks) -* * Sam Hellawell (https://github.com/samhellawell) -* * Vladislavs Sokurenko (https://github.com/sokurenko) -* -* Other contributions -* =================== -* -* The following people have contributed something other than code (e.g. reported -* bugs, provided ideas, etc; roughly in order of appearance): -* -* * Greg Burns -* * Anthony Rabine -* * Carlos Costa -* * Aur\u00e9lien Bouilland -* * Preet Desai (Pris Matic) -* * judofyr (http://www.reddit.com/user/judofyr) -* * Jason Woofenden -* * Micha\u0142 Przyby\u015b -* * Anthony Howe -* * Conrad Pankoff -* * Jim Schimpf -* * Rajaran Gaunker (https://github.com/zimbabao) -* * Andreas \u00d6man -* * Doug Sanden -* * Josh Engebretson (https://github.com/JoshEngebretson) -* * Remo Eichenberger (https://github.com/remoe) -* * Mamod Mehyar (https://github.com/mamod) -* * David Demelier (https://github.com/markand) -* * Tim Caswell (https://github.com/creationix) -* * Mitchell Blank Jr (https://github.com/mitchblank) -* * https://github.com/yushli -* * Seo Sanghyeon (https://github.com/sanxiyn) -* * Han ChoongWoo (https://github.com/tunz) -* * Joshua Peek (https://github.com/josh) -* * Bruce E. Pascoe (https://github.com/fatcerberus) -* * https://github.com/Kelledin -* * https://github.com/sstruchtrup -* * Michael Drake (https://github.com/tlsa) -* * https://github.com/chris-y -* * Laurent Zubiaur (https://github.com/lzubiaur) -* * Neil Kolban (https://github.com/nkolban) -* * Wilhelm Wanecek (https://github.com/wanecek) -* * Andrew Janke (https://github.com/apjanke) -* * Unamer (https://github.com/unamer) -* * Karl Dahlke (eklhad@gmail.com) -* -* If you are accidentally missing from this list, send me an e-mail -* (``sami.vaarala@iki.fi``) and I'll fix the omission. -*/ - -#line 1 "duk_replacements.c" -/* - * Replacements for missing platform functions. - * - * Unlike the originals, fpclassify() and signbit() replacements don't - * work on any floating point types, only doubles. The C typing here - * mimics the standard prototypes. - */ - -/* #include duk_internal.h */ -#line 1 "duk_internal.h" -/* - * Top-level include file to be used for all (internal) source files. - * - * Source files should not include individual header files, as they - * have not been designed to be individually included. - */ - -#if !defined(DUK_INTERNAL_H_INCLUDED) -#define DUK_INTERNAL_H_INCLUDED - -/* - * The 'duktape.h' header provides the public API, but also handles all - * compiler and platform specific feature detection, Duktape feature - * resolution, inclusion of system headers, etc. These have been merged - * because the public API is also dependent on e.g. detecting appropriate - * C types which is quite platform/compiler specific especially for a non-C99 - * build. The public API is also dependent on the resolved feature set. - * - * Some actions taken by the merged header (such as including system headers) - * are not appropriate for building a user application. The define - * DUK_COMPILING_DUKTAPE allows the merged header to skip/include some - * sections depending on what is being built. - */ - -#define DUK_COMPILING_DUKTAPE -#include "duktape.h" - -/* - * Duktape includes (other than duk_features.h) - * - * The header files expect to be included in an order which satisfies header - * dependencies correctly (the headers themselves don't include any other - * includes). Forward declarations are used to break circular struct/typedef - * dependencies. - */ - -/* #include duk_dblunion.h */ -#line 1 "duk_dblunion.h" -/* - * Union to access IEEE double memory representation, indexes for double - * memory representation, and some macros for double manipulation. - * - * Also used by packed duk_tval. Use a union for bit manipulation to - * minimize aliasing issues in practice. The C99 standard does not - * guarantee that this should work, but it's a very widely supported - * practice for low level manipulation. - * - * IEEE double format summary: - * - * seeeeeee eeeeffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff - * A B C D E F G H - * - * s sign bit - * eee... exponent field - * fff... fraction - * - * See http://en.wikipedia.org/wiki/Double_precision_floating-point_format. - * - * NaNs are represented as exponent 0x7ff and mantissa != 0. The NaN is a - * signaling NaN when the highest bit of the mantissa is zero, and a quiet - * NaN when the highest bit is set. - * - * At least three memory layouts are relevant here: - * - * A B C D E F G H Big endian (e.g. 68k) DUK_USE_DOUBLE_BE - * H G F E D C B A Little endian (e.g. x86) DUK_USE_DOUBLE_LE - * D C B A H G F E Mixed endian (e.g. ARM FPA) DUK_USE_DOUBLE_ME - * - * Legacy ARM (FPA) is a special case: ARM double values are in mixed - * endian format while ARM duk_uint64_t values are in standard little endian - * format (H G F E D C B A). When a double is read as a duk_uint64_t - * from memory, the register will contain the (logical) value - * E F G H A B C D. This requires some special handling below. - * See http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.dui0056d/Bcfhgcgd.html. - * - * Indexes of various types (8-bit, 16-bit, 32-bit) in memory relative to - * the logical (big endian) order: - * - * byte order duk_uint8_t duk_uint16_t duk_uint32_t - * BE 01234567 0123 01 - * LE 76543210 3210 10 - * ME (ARM) 32107654 1032 01 - * - * Some processors may alter NaN values in a floating point load+store. - * For instance, on X86 a FLD + FSTP may convert a signaling NaN to a - * quiet one. This is catastrophic when NaN space is used in packed - * duk_tval values. See: misc/clang_aliasing.c. - */ - -#if !defined(DUK_DBLUNION_H_INCLUDED) -#define DUK_DBLUNION_H_INCLUDED - -/* - * Union for accessing double parts, also serves as packed duk_tval - */ - -union duk_double_union { - double d; - float f[2]; -#if defined(DUK_USE_64BIT_OPS) - duk_uint64_t ull[1]; -#endif - duk_uint32_t ui[2]; - duk_uint16_t us[4]; - duk_uint8_t uc[8]; -#if defined(DUK_USE_PACKED_TVAL) - void *vp[2]; /* used by packed duk_tval, assumes sizeof(void *) == 4 */ -#endif -}; - -typedef union duk_double_union duk_double_union; - -/* - * Indexes of various types with respect to big endian (logical) layout - */ - -#if defined(DUK_USE_DOUBLE_LE) -#if defined(DUK_USE_64BIT_OPS) -#define DUK_DBL_IDX_ULL0 0 -#endif -#define DUK_DBL_IDX_UI0 1 -#define DUK_DBL_IDX_UI1 0 -#define DUK_DBL_IDX_US0 3 -#define DUK_DBL_IDX_US1 2 -#define DUK_DBL_IDX_US2 1 -#define DUK_DBL_IDX_US3 0 -#define DUK_DBL_IDX_UC0 7 -#define DUK_DBL_IDX_UC1 6 -#define DUK_DBL_IDX_UC2 5 -#define DUK_DBL_IDX_UC3 4 -#define DUK_DBL_IDX_UC4 3 -#define DUK_DBL_IDX_UC5 2 -#define DUK_DBL_IDX_UC6 1 -#define DUK_DBL_IDX_UC7 0 -#define DUK_DBL_IDX_VP0 DUK_DBL_IDX_UI0 /* packed tval */ -#define DUK_DBL_IDX_VP1 DUK_DBL_IDX_UI1 /* packed tval */ -#elif defined(DUK_USE_DOUBLE_BE) -#if defined(DUK_USE_64BIT_OPS) -#define DUK_DBL_IDX_ULL0 0 -#endif -#define DUK_DBL_IDX_UI0 0 -#define DUK_DBL_IDX_UI1 1 -#define DUK_DBL_IDX_US0 0 -#define DUK_DBL_IDX_US1 1 -#define DUK_DBL_IDX_US2 2 -#define DUK_DBL_IDX_US3 3 -#define DUK_DBL_IDX_UC0 0 -#define DUK_DBL_IDX_UC1 1 -#define DUK_DBL_IDX_UC2 2 -#define DUK_DBL_IDX_UC3 3 -#define DUK_DBL_IDX_UC4 4 -#define DUK_DBL_IDX_UC5 5 -#define DUK_DBL_IDX_UC6 6 -#define DUK_DBL_IDX_UC7 7 -#define DUK_DBL_IDX_VP0 DUK_DBL_IDX_UI0 /* packed tval */ -#define DUK_DBL_IDX_VP1 DUK_DBL_IDX_UI1 /* packed tval */ -#elif defined(DUK_USE_DOUBLE_ME) -#if defined(DUK_USE_64BIT_OPS) -#define DUK_DBL_IDX_ULL0 0 /* not directly applicable, byte order differs from a double */ -#endif -#define DUK_DBL_IDX_UI0 0 -#define DUK_DBL_IDX_UI1 1 -#define DUK_DBL_IDX_US0 1 -#define DUK_DBL_IDX_US1 0 -#define DUK_DBL_IDX_US2 3 -#define DUK_DBL_IDX_US3 2 -#define DUK_DBL_IDX_UC0 3 -#define DUK_DBL_IDX_UC1 2 -#define DUK_DBL_IDX_UC2 1 -#define DUK_DBL_IDX_UC3 0 -#define DUK_DBL_IDX_UC4 7 -#define DUK_DBL_IDX_UC5 6 -#define DUK_DBL_IDX_UC6 5 -#define DUK_DBL_IDX_UC7 4 -#define DUK_DBL_IDX_VP0 DUK_DBL_IDX_UI0 /* packed tval */ -#define DUK_DBL_IDX_VP1 DUK_DBL_IDX_UI1 /* packed tval */ -#else -#error internal error -#endif - -/* - * Helper macros for reading/writing memory representation parts, used - * by duk_numconv.c and duk_tval.h. - */ - -#define DUK_DBLUNION_SET_DOUBLE(u, v) \ - do { \ - (u)->d = (v); \ - } while (0) - -#define DUK_DBLUNION_SET_HIGH32(u, v) \ - do { \ - (u)->ui[DUK_DBL_IDX_UI0] = (duk_uint32_t) (v); \ - } while (0) - -#if defined(DUK_USE_64BIT_OPS) -#if defined(DUK_USE_DOUBLE_ME) -#define DUK_DBLUNION_SET_HIGH32_ZERO_LOW32(u, v) \ - do { \ - (u)->ull[DUK_DBL_IDX_ULL0] = (duk_uint64_t) (v); \ - } while (0) -#else -#define DUK_DBLUNION_SET_HIGH32_ZERO_LOW32(u, v) \ - do { \ - (u)->ull[DUK_DBL_IDX_ULL0] = ((duk_uint64_t) (v)) << 32; \ - } while (0) -#endif -#else /* DUK_USE_64BIT_OPS */ -#define DUK_DBLUNION_SET_HIGH32_ZERO_LOW32(u, v) \ - do { \ - (u)->ui[DUK_DBL_IDX_UI0] = (duk_uint32_t) (v); \ - (u)->ui[DUK_DBL_IDX_UI1] = (duk_uint32_t) 0; \ - } while (0) -#endif /* DUK_USE_64BIT_OPS */ - -#define DUK_DBLUNION_SET_LOW32(u, v) \ - do { \ - (u)->ui[DUK_DBL_IDX_UI1] = (duk_uint32_t) (v); \ - } while (0) - -#define DUK_DBLUNION_GET_DOUBLE(u) ((u)->d) -#define DUK_DBLUNION_GET_HIGH32(u) ((u)->ui[DUK_DBL_IDX_UI0]) -#define DUK_DBLUNION_GET_LOW32(u) ((u)->ui[DUK_DBL_IDX_UI1]) - -#if defined(DUK_USE_64BIT_OPS) -#if defined(DUK_USE_DOUBLE_ME) -#define DUK_DBLUNION_SET_UINT64(u, v) \ - do { \ - (u)->ui[DUK_DBL_IDX_UI0] = (duk_uint32_t) ((v) >> 32); \ - (u)->ui[DUK_DBL_IDX_UI1] = (duk_uint32_t) (v); \ - } while (0) -#define DUK_DBLUNION_GET_UINT64(u) ((((duk_uint64_t) (u)->ui[DUK_DBL_IDX_UI0]) << 32) | ((duk_uint64_t) (u)->ui[DUK_DBL_IDX_UI1])) -#else -#define DUK_DBLUNION_SET_UINT64(u, v) \ - do { \ - (u)->ull[DUK_DBL_IDX_ULL0] = (duk_uint64_t) (v); \ - } while (0) -#define DUK_DBLUNION_GET_UINT64(u) ((u)->ull[DUK_DBL_IDX_ULL0]) -#endif -#define DUK_DBLUNION_SET_INT64(u, v) DUK_DBLUNION_SET_UINT64((u), (duk_uint64_t) (v)) -#define DUK_DBLUNION_GET_INT64(u) ((duk_int64_t) DUK_DBLUNION_GET_UINT64((u))) -#endif /* DUK_USE_64BIT_OPS */ - -/* - * Double NaN manipulation macros related to NaN normalization needed when - * using the packed duk_tval representation. NaN normalization is necessary - * to keep double values compatible with the duk_tval format. - * - * When packed duk_tval is used, the NaN space is used to store pointers - * and other tagged values in addition to NaNs. Actual NaNs are normalized - * to a specific quiet NaN. The macros below are used by the implementation - * to check and normalize NaN values when they might be created. The macros - * are essentially NOPs when the non-packed duk_tval representation is used. - * - * A FULL check is exact and checks all bits. A NOTFULL check is used by - * the packed duk_tval and works correctly for all NaNs except those that - * begin with 0x7ff0. Since the 'normalized NaN' values used with packed - * duk_tval begin with 0x7ff8, the partial check is reliable when packed - * duk_tval is used. The 0x7ff8 prefix means the normalized NaN will be a - * quiet NaN regardless of its remaining lower bits. - * - * The ME variant below is specifically for ARM byte order, which has the - * feature that while doubles have a mixed byte order (32107654), unsigned - * long long values has a little endian byte order (76543210). When writing - * a logical double value through a ULL pointer, the 32-bit words need to be - * swapped; hence the #if defined()s below for ULL writes with DUK_USE_DOUBLE_ME. - * This is not full ARM support but suffices for some environments. - */ - -#if defined(DUK_USE_64BIT_OPS) -#if defined(DUK_USE_DOUBLE_ME) -/* Macros for 64-bit ops + mixed endian doubles. */ -#define DUK__DBLUNION_SET_NAN_FULL(u) \ - do { \ - (u)->ull[DUK_DBL_IDX_ULL0] = DUK_U64_CONSTANT(0x000000007ff80000); \ - } while (0) -#define DUK__DBLUNION_IS_NAN_FULL(u) \ - ((((u)->ull[DUK_DBL_IDX_ULL0] & DUK_U64_CONSTANT(0x000000007ff00000)) == DUK_U64_CONSTANT(0x000000007ff00000)) && \ - ((((u)->ull[DUK_DBL_IDX_ULL0]) & DUK_U64_CONSTANT(0xffffffff000fffff)) != 0)) -#define DUK__DBLUNION_IS_NORMALIZED_NAN_FULL(u) ((u)->ull[DUK_DBL_IDX_ULL0] == DUK_U64_CONSTANT(0x000000007ff80000)) -#define DUK__DBLUNION_IS_ANYINF(u) \ - (((u)->ull[DUK_DBL_IDX_ULL0] & DUK_U64_CONSTANT(0xffffffff7fffffff)) == DUK_U64_CONSTANT(0x000000007ff00000)) -#define DUK__DBLUNION_IS_POSINF(u) ((u)->ull[DUK_DBL_IDX_ULL0] == DUK_U64_CONSTANT(0x000000007ff00000)) -#define DUK__DBLUNION_IS_NEGINF(u) ((u)->ull[DUK_DBL_IDX_ULL0] == DUK_U64_CONSTANT(0x00000000fff00000)) -#define DUK__DBLUNION_IS_ANYZERO(u) \ - (((u)->ull[DUK_DBL_IDX_ULL0] & DUK_U64_CONSTANT(0xffffffff7fffffff)) == DUK_U64_CONSTANT(0x0000000000000000)) -#define DUK__DBLUNION_IS_POSZERO(u) ((u)->ull[DUK_DBL_IDX_ULL0] == DUK_U64_CONSTANT(0x0000000000000000)) -#define DUK__DBLUNION_IS_NEGZERO(u) ((u)->ull[DUK_DBL_IDX_ULL0] == DUK_U64_CONSTANT(0x0000000080000000)) -#else -/* Macros for 64-bit ops + big/little endian doubles. */ -#define DUK__DBLUNION_SET_NAN_FULL(u) \ - do { \ - (u)->ull[DUK_DBL_IDX_ULL0] = DUK_U64_CONSTANT(0x7ff8000000000000); \ - } while (0) -#define DUK__DBLUNION_IS_NAN_FULL(u) \ - ((((u)->ull[DUK_DBL_IDX_ULL0] & DUK_U64_CONSTANT(0x7ff0000000000000)) == DUK_U64_CONSTANT(0x7ff0000000000000)) && \ - ((((u)->ull[DUK_DBL_IDX_ULL0]) & DUK_U64_CONSTANT(0x000fffffffffffff)) != 0)) -#define DUK__DBLUNION_IS_NORMALIZED_NAN_FULL(u) ((u)->ull[DUK_DBL_IDX_ULL0] == DUK_U64_CONSTANT(0x7ff8000000000000)) -#define DUK__DBLUNION_IS_ANYINF(u) \ - (((u)->ull[DUK_DBL_IDX_ULL0] & DUK_U64_CONSTANT(0x7fffffffffffffff)) == DUK_U64_CONSTANT(0x7ff0000000000000)) -#define DUK__DBLUNION_IS_POSINF(u) ((u)->ull[DUK_DBL_IDX_ULL0] == DUK_U64_CONSTANT(0x7ff0000000000000)) -#define DUK__DBLUNION_IS_NEGINF(u) ((u)->ull[DUK_DBL_IDX_ULL0] == DUK_U64_CONSTANT(0xfff0000000000000)) -#define DUK__DBLUNION_IS_ANYZERO(u) \ - (((u)->ull[DUK_DBL_IDX_ULL0] & DUK_U64_CONSTANT(0x7fffffffffffffff)) == DUK_U64_CONSTANT(0x0000000000000000)) -#define DUK__DBLUNION_IS_POSZERO(u) ((u)->ull[DUK_DBL_IDX_ULL0] == DUK_U64_CONSTANT(0x0000000000000000)) -#define DUK__DBLUNION_IS_NEGZERO(u) ((u)->ull[DUK_DBL_IDX_ULL0] == DUK_U64_CONSTANT(0x8000000000000000)) -#endif -#else /* DUK_USE_64BIT_OPS */ -/* Macros for no 64-bit ops, any endianness. */ -#define DUK__DBLUNION_SET_NAN_FULL(u) \ - do { \ - (u)->ui[DUK_DBL_IDX_UI0] = (duk_uint32_t) 0x7ff80000UL; \ - (u)->ui[DUK_DBL_IDX_UI1] = (duk_uint32_t) 0x00000000UL; \ - } while (0) -#define DUK__DBLUNION_IS_NAN_FULL(u) \ - ((((u)->ui[DUK_DBL_IDX_UI0] & 0x7ff00000UL) == 0x7ff00000UL) && \ - (((u)->ui[DUK_DBL_IDX_UI0] & 0x000fffffUL) != 0 || (u)->ui[DUK_DBL_IDX_UI1] != 0)) -#define DUK__DBLUNION_IS_NORMALIZED_NAN_FULL(u) \ - (((u)->ui[DUK_DBL_IDX_UI0] == 0x7ff80000UL) && ((u)->ui[DUK_DBL_IDX_UI1] == 0x00000000UL)) -#define DUK__DBLUNION_IS_ANYINF(u) \ - ((((u)->ui[DUK_DBL_IDX_UI0] & 0x7fffffffUL) == 0x7ff00000UL) && ((u)->ui[DUK_DBL_IDX_UI1] == 0x00000000UL)) -#define DUK__DBLUNION_IS_POSINF(u) (((u)->ui[DUK_DBL_IDX_UI0] == 0x7ff00000UL) && ((u)->ui[DUK_DBL_IDX_UI1] == 0x00000000UL)) -#define DUK__DBLUNION_IS_NEGINF(u) (((u)->ui[DUK_DBL_IDX_UI0] == 0xfff00000UL) && ((u)->ui[DUK_DBL_IDX_UI1] == 0x00000000UL)) -#define DUK__DBLUNION_IS_ANYZERO(u) \ - ((((u)->ui[DUK_DBL_IDX_UI0] & 0x7fffffffUL) == 0x00000000UL) && ((u)->ui[DUK_DBL_IDX_UI1] == 0x00000000UL)) -#define DUK__DBLUNION_IS_POSZERO(u) (((u)->ui[DUK_DBL_IDX_UI0] == 0x00000000UL) && ((u)->ui[DUK_DBL_IDX_UI1] == 0x00000000UL)) -#define DUK__DBLUNION_IS_NEGZERO(u) (((u)->ui[DUK_DBL_IDX_UI0] == 0x80000000UL) && ((u)->ui[DUK_DBL_IDX_UI1] == 0x00000000UL)) -#endif /* DUK_USE_64BIT_OPS */ - -#define DUK__DBLUNION_SET_NAN_NOTFULL(u) \ - do { \ - (u)->us[DUK_DBL_IDX_US0] = 0x7ff8UL; \ - } while (0) - -#define DUK__DBLUNION_IS_NAN_NOTFULL(u) \ - /* E == 0x7ff, topmost four bits of F != 0 => assume NaN */ \ - ((((u)->us[DUK_DBL_IDX_US0] & 0x7ff0UL) == 0x7ff0UL) && (((u)->us[DUK_DBL_IDX_US0] & 0x000fUL) != 0x0000UL)) - -#define DUK__DBLUNION_IS_NORMALIZED_NAN_NOTFULL(u) \ - /* E == 0x7ff, F == 8 => normalized NaN */ \ - ((u)->us[DUK_DBL_IDX_US0] == 0x7ff8UL) - -#define DUK__DBLUNION_NORMALIZE_NAN_CHECK_FULL(u) \ - do { \ - if (DUK__DBLUNION_IS_NAN_FULL((u))) { \ - DUK__DBLUNION_SET_NAN_FULL((u)); \ - } \ - } while (0) - -#define DUK__DBLUNION_NORMALIZE_NAN_CHECK_NOTFULL(u) \ - do { \ - /* Check must be full. */ \ - if (DUK__DBLUNION_IS_NAN_FULL((u))) { \ - DUK__DBLUNION_SET_NAN_NOTFULL((u)); \ - } \ - } while (0) - -/* Concrete macros for NaN handling used by the implementation internals. - * Chosen so that they match the duk_tval representation: with a packed - * duk_tval, ensure NaNs are properly normalized; with a non-packed duk_tval - * these are essentially NOPs. - */ - -#if defined(DUK_USE_PACKED_TVAL) -#define DUK_DBLUNION_NORMALIZE_NAN_CHECK(u) DUK__DBLUNION_NORMALIZE_NAN_CHECK_FULL((u)) -#define DUK_DBLUNION_IS_NAN(u) DUK__DBLUNION_IS_NAN_FULL((u)) -#define DUK_DBLUNION_IS_NORMALIZED_NAN(u) DUK__DBLUNION_IS_NORMALIZED_NAN_FULL((u)) -#define DUK_DBLUNION_SET_NAN(d) DUK__DBLUNION_SET_NAN_FULL((d)) -#if 0 -#define DUK_DBLUNION_NORMALIZE_NAN_CHECK(u) DUK__DBLUNION_NORMALIZE_NAN_CHECK_NOTFULL((u)) -#define DUK_DBLUNION_IS_NAN(u) DUK__DBLUNION_IS_NAN_NOTFULL((u)) -#define DUK_DBLUNION_IS_NORMALIZED_NAN(u) DUK__DBLUNION_IS_NORMALIZED_NAN_NOTFULL((u)) -#define DUK_DBLUNION_SET_NAN(d) DUK__DBLUNION_SET_NAN_NOTFULL((d)) -#endif -#define DUK_DBLUNION_IS_NORMALIZED(u) \ - (!DUK_DBLUNION_IS_NAN((u)) || /* either not a NaN */ \ - DUK_DBLUNION_IS_NORMALIZED_NAN((u))) /* or is a normalized NaN */ -#else /* DUK_USE_PACKED_TVAL */ -#define DUK_DBLUNION_NORMALIZE_NAN_CHECK(u) /* nop: no need to normalize */ -#define DUK_DBLUNION_IS_NAN(u) DUK__DBLUNION_IS_NAN_FULL((u)) /* (DUK_ISNAN((u)->d)) */ -#define DUK_DBLUNION_IS_NORMALIZED_NAN(u) DUK__DBLUNION_IS_NAN_FULL((u)) /* (DUK_ISNAN((u)->d)) */ -#define DUK_DBLUNION_IS_NORMALIZED(u) 1 /* all doubles are considered normalized */ -#define DUK_DBLUNION_SET_NAN(u) \ - do { \ - /* in non-packed representation we don't care about which NaN is used */ \ - (u)->d = DUK_DOUBLE_NAN; \ - } while (0) -#endif /* DUK_USE_PACKED_TVAL */ - -#define DUK_DBLUNION_IS_ANYINF(u) DUK__DBLUNION_IS_ANYINF((u)) -#define DUK_DBLUNION_IS_POSINF(u) DUK__DBLUNION_IS_POSINF((u)) -#define DUK_DBLUNION_IS_NEGINF(u) DUK__DBLUNION_IS_NEGINF((u)) - -#define DUK_DBLUNION_IS_ANYZERO(u) DUK__DBLUNION_IS_ANYZERO((u)) -#define DUK_DBLUNION_IS_POSZERO(u) DUK__DBLUNION_IS_POSZERO((u)) -#define DUK_DBLUNION_IS_NEGZERO(u) DUK__DBLUNION_IS_NEGZERO((u)) - -/* XXX: native 64-bit byteswaps when available */ - -/* 64-bit byteswap, same operation independent of target endianness. */ -#define DUK_DBLUNION_BSWAP64(u) \ - do { \ - duk_uint32_t duk__bswaptmp1, duk__bswaptmp2; \ - duk__bswaptmp1 = (u)->ui[0]; \ - duk__bswaptmp2 = (u)->ui[1]; \ - duk__bswaptmp1 = DUK_BSWAP32(duk__bswaptmp1); \ - duk__bswaptmp2 = DUK_BSWAP32(duk__bswaptmp2); \ - (u)->ui[0] = duk__bswaptmp2; \ - (u)->ui[1] = duk__bswaptmp1; \ - } while (0) - -/* Byteswap an IEEE double in the duk_double_union from host to network - * order. For a big endian target this is a no-op. - */ -#if defined(DUK_USE_DOUBLE_LE) -#define DUK_DBLUNION_DOUBLE_HTON(u) \ - do { \ - duk_uint32_t duk__bswaptmp1, duk__bswaptmp2; \ - duk__bswaptmp1 = (u)->ui[0]; \ - duk__bswaptmp2 = (u)->ui[1]; \ - duk__bswaptmp1 = DUK_BSWAP32(duk__bswaptmp1); \ - duk__bswaptmp2 = DUK_BSWAP32(duk__bswaptmp2); \ - (u)->ui[0] = duk__bswaptmp2; \ - (u)->ui[1] = duk__bswaptmp1; \ - } while (0) -#elif defined(DUK_USE_DOUBLE_ME) -#define DUK_DBLUNION_DOUBLE_HTON(u) \ - do { \ - duk_uint32_t duk__bswaptmp1, duk__bswaptmp2; \ - duk__bswaptmp1 = (u)->ui[0]; \ - duk__bswaptmp2 = (u)->ui[1]; \ - duk__bswaptmp1 = DUK_BSWAP32(duk__bswaptmp1); \ - duk__bswaptmp2 = DUK_BSWAP32(duk__bswaptmp2); \ - (u)->ui[0] = duk__bswaptmp1; \ - (u)->ui[1] = duk__bswaptmp2; \ - } while (0) -#elif defined(DUK_USE_DOUBLE_BE) -#define DUK_DBLUNION_DOUBLE_HTON(u) \ - do { \ - } while (0) -#else -#error internal error, double endianness insane -#endif - -/* Reverse operation is the same. */ -#define DUK_DBLUNION_DOUBLE_NTOH(u) DUK_DBLUNION_DOUBLE_HTON((u)) - -/* Some sign bit helpers. */ -#if defined(DUK_USE_64BIT_OPS) -#define DUK_DBLUNION_HAS_SIGNBIT(u) (((u)->ull[DUK_DBL_IDX_ULL0] & DUK_U64_CONSTANT(0x8000000000000000)) != 0) -#define DUK_DBLUNION_GET_SIGNBIT(u) (((u)->ull[DUK_DBL_IDX_ULL0] >> 63U)) -#else -#define DUK_DBLUNION_HAS_SIGNBIT(u) (((u)->ui[DUK_DBL_IDX_UI0] & 0x80000000UL) != 0) -#define DUK_DBLUNION_GET_SIGNBIT(u) (((u)->ui[DUK_DBL_IDX_UI0] >> 31U)) -#endif - -#endif /* DUK_DBLUNION_H_INCLUDED */ -/* #include duk_fltunion.h */ -#line 1 "duk_fltunion.h" -/* - * Union to access IEEE float memory representation. - */ - -#if !defined(DUK_FLTUNION_H_INCLUDED) -#define DUK_FLTUNION_H_INCLUDED - -/* #include duk_internal.h -> already included */ - -union duk_float_union { - float f; - duk_uint32_t ui[1]; - duk_uint16_t us[2]; - duk_uint8_t uc[4]; -}; - -typedef union duk_float_union duk_float_union; - -#if defined(DUK_USE_DOUBLE_LE) || defined(DUK_USE_DOUBLE_ME) -#define DUK_FLT_IDX_UI0 0 -#define DUK_FLT_IDX_US0 1 -#define DUK_FLT_IDX_US1 0 -#define DUK_FLT_IDX_UC0 3 -#define DUK_FLT_IDX_UC1 2 -#define DUK_FLT_IDX_UC2 1 -#define DUK_FLT_IDX_UC3 0 -#elif defined(DUK_USE_DOUBLE_BE) -#define DUK_FLT_IDX_UI0 0 -#define DUK_FLT_IDX_US0 0 -#define DUK_FLT_IDX_US1 1 -#define DUK_FLT_IDX_UC0 0 -#define DUK_FLT_IDX_UC1 1 -#define DUK_FLT_IDX_UC2 2 -#define DUK_FLT_IDX_UC3 3 -#else -#error internal error -#endif - -#endif /* DUK_FLTUNION_H_INCLUDED */ -/* #include duk_replacements.h */ -#line 1 "duk_replacements.h" -#if !defined(DUK_REPLACEMENTS_H_INCLUDED) -#define DUK_REPLACEMENTS_H_INCLUDED - -#if !defined(DUK_SINGLE_FILE) -#if defined(DUK_USE_COMPUTED_INFINITY) -DUK_INTERNAL_DECL double duk_computed_infinity; -#endif -#if defined(DUK_USE_COMPUTED_NAN) -DUK_INTERNAL_DECL double duk_computed_nan; -#endif -#endif /* !DUK_SINGLE_FILE */ - -#if defined(DUK_USE_REPL_FPCLASSIFY) -DUK_INTERNAL_DECL int duk_repl_fpclassify(double x); -#endif -#if defined(DUK_USE_REPL_SIGNBIT) -DUK_INTERNAL_DECL int duk_repl_signbit(double x); -#endif -#if defined(DUK_USE_REPL_ISFINITE) -DUK_INTERNAL_DECL int duk_repl_isfinite(double x); -#endif -#if defined(DUK_USE_REPL_ISNAN) -DUK_INTERNAL_DECL int duk_repl_isnan(double x); -#endif -#if defined(DUK_USE_REPL_ISINF) -DUK_INTERNAL_DECL int duk_repl_isinf(double x); -#endif - -#endif /* DUK_REPLACEMENTS_H_INCLUDED */ -/* #include duk_jmpbuf.h */ -#line 1 "duk_jmpbuf.h" -/* - * Wrapper for jmp_buf. - * - * This is used because jmp_buf is an array type for backward compatibility. - * Wrapping jmp_buf in a struct makes pointer references, sizeof, etc, - * behave more intuitively. - * - * http://en.wikipedia.org/wiki/Setjmp.h#Member_types - */ - -#if !defined(DUK_JMPBUF_H_INCLUDED) -#define DUK_JMPBUF_H_INCLUDED - -#if defined(DUK_USE_CPP_EXCEPTIONS) -struct duk_jmpbuf { - duk_small_int_t dummy; /* unused */ -}; -#else -struct duk_jmpbuf { - DUK_JMPBUF_TYPE jb; -}; -#endif - -#endif /* DUK_JMPBUF_H_INCLUDED */ -/* #include duk_exception.h */ -#line 1 "duk_exception.h" -/* - * Exceptions for Duktape internal throws when C++ exceptions are used - * for long control transfers. - */ - -#if !defined(DUK_EXCEPTION_H_INCLUDED) -#define DUK_EXCEPTION_H_INCLUDED - -#if defined(DUK_USE_CPP_EXCEPTIONS) -/* Internal exception used as a setjmp-longjmp replacement. User code should - * NEVER see or catch this exception, so it doesn't inherit from any base - * class which should minimize the chance of user code accidentally catching - * the exception. - */ -class duk_internal_exception { - /* intentionally empty */ -}; - -/* Fatal error, thrown as a specific C++ exception with C++ exceptions - * enabled. It is unsafe to continue; doing so may cause crashes or memory - * leaks. This is intended to be either uncaught, or caught by user code - * aware of the "unsafe to continue" semantics. - */ -class duk_fatal_exception : public virtual std::runtime_error { - public: - duk_fatal_exception(const char *message) : std::runtime_error(message) { - } -}; -#endif - -#endif /* DUK_EXCEPTION_H_INCLUDED */ -/* #include duk_forwdecl.h */ -#line 1 "duk_forwdecl.h" -/* - * Forward declarations for all Duktape structures. - */ - -#if !defined(DUK_FORWDECL_H_INCLUDED) -#define DUK_FORWDECL_H_INCLUDED - -/* - * Forward declarations - */ - -#if defined(DUK_USE_CPP_EXCEPTIONS) -class duk_internal_exception; -#else -struct duk_jmpbuf; -#endif - -/* duk_tval intentionally skipped */ -struct duk_heaphdr; -struct duk_heaphdr_string; -struct duk_harray; -struct duk_hstring; -struct duk_hstring_external; -struct duk_hobject; -struct duk_hcompfunc; -struct duk_hnatfunc; -struct duk_hboundfunc; -struct duk_hthread; -struct duk_hbufobj; -struct duk_hdecenv; -struct duk_hobjenv; -struct duk_hproxy; -struct duk_hbuffer; -struct duk_hbuffer_fixed; -struct duk_hbuffer_dynamic; -struct duk_hbuffer_external; - -struct duk_propaccessor; -union duk_propvalue; -struct duk_propdesc; - -struct duk_heap; -struct duk_breakpoint; - -struct duk_activation; -struct duk_catcher; -struct duk_ljstate; -struct duk_strcache_entry; -struct duk_litcache_entry; -struct duk_strtab_entry; - -#if defined(DUK_USE_DEBUG) -struct duk_fixedbuffer; -#endif - -struct duk_bitdecoder_ctx; -struct duk_bitencoder_ctx; -struct duk_bufwriter_ctx; - -struct duk_token; -struct duk_re_token; -struct duk_lexer_point; -struct duk_lexer_ctx; -struct duk_lexer_codepoint; - -struct duk_compiler_instr; -struct duk_compiler_func; -struct duk_compiler_ctx; - -struct duk_re_matcher_ctx; -struct duk_re_compiler_ctx; - -#if defined(DUK_USE_CPP_EXCEPTIONS) -/* no typedef */ -#else -typedef struct duk_jmpbuf duk_jmpbuf; -#endif - -/* duk_tval intentionally skipped */ -typedef struct duk_heaphdr duk_heaphdr; -typedef struct duk_heaphdr_string duk_heaphdr_string; -typedef struct duk_harray duk_harray; -typedef struct duk_hstring duk_hstring; -typedef struct duk_hstring_external duk_hstring_external; -typedef struct duk_hobject duk_hobject; -typedef struct duk_hcompfunc duk_hcompfunc; -typedef struct duk_hnatfunc duk_hnatfunc; -typedef struct duk_hboundfunc duk_hboundfunc; -typedef struct duk_hthread duk_hthread; -typedef struct duk_hbufobj duk_hbufobj; -typedef struct duk_hdecenv duk_hdecenv; -typedef struct duk_hobjenv duk_hobjenv; -typedef struct duk_hproxy duk_hproxy; -typedef struct duk_hbuffer duk_hbuffer; -typedef struct duk_hbuffer_fixed duk_hbuffer_fixed; -typedef struct duk_hbuffer_dynamic duk_hbuffer_dynamic; -typedef struct duk_hbuffer_external duk_hbuffer_external; - -typedef struct duk_propaccessor duk_propaccessor; -typedef union duk_propvalue duk_propvalue; -typedef struct duk_propdesc duk_propdesc; - -typedef struct duk_heap duk_heap; -typedef struct duk_breakpoint duk_breakpoint; - -typedef struct duk_activation duk_activation; -typedef struct duk_catcher duk_catcher; -typedef struct duk_ljstate duk_ljstate; -typedef struct duk_strcache_entry duk_strcache_entry; -typedef struct duk_litcache_entry duk_litcache_entry; -typedef struct duk_strtab_entry duk_strtab_entry; - -#if defined(DUK_USE_DEBUG) -typedef struct duk_fixedbuffer duk_fixedbuffer; -#endif - -typedef struct duk_bitdecoder_ctx duk_bitdecoder_ctx; -typedef struct duk_bitencoder_ctx duk_bitencoder_ctx; -typedef struct duk_bufwriter_ctx duk_bufwriter_ctx; - -typedef struct duk_token duk_token; -typedef struct duk_re_token duk_re_token; -typedef struct duk_lexer_point duk_lexer_point; -typedef struct duk_lexer_ctx duk_lexer_ctx; -typedef struct duk_lexer_codepoint duk_lexer_codepoint; - -typedef struct duk_compiler_instr duk_compiler_instr; -typedef struct duk_compiler_func duk_compiler_func; -typedef struct duk_compiler_ctx duk_compiler_ctx; - -typedef struct duk_re_matcher_ctx duk_re_matcher_ctx; -typedef struct duk_re_compiler_ctx duk_re_compiler_ctx; - -#endif /* DUK_FORWDECL_H_INCLUDED */ -/* #include duk_tval.h */ -#line 1 "duk_tval.h" -/* - * Tagged type definition (duk_tval) and accessor macros. - * - * Access all fields through the accessor macros, as the representation - * is quite tricky. - * - * There are two packed type alternatives: an 8-byte representation - * based on an IEEE double (preferred for compactness), and a 12-byte - * representation (portability). The latter is needed also in e.g. - * 64-bit environments (it usually pads to 16 bytes per value). - * - * Selecting the tagged type format involves many trade-offs (memory - * use, size and performance of generated code, portability, etc). - * - * NB: because macro arguments are often expressions, macros should - * avoid evaluating their argument more than once. - */ - -#if !defined(DUK_TVAL_H_INCLUDED) -#define DUK_TVAL_H_INCLUDED - -/* sanity */ -#if !defined(DUK_USE_DOUBLE_LE) && !defined(DUK_USE_DOUBLE_ME) && !defined(DUK_USE_DOUBLE_BE) -#error unsupported: cannot determine byte order variant -#endif - -#if defined(DUK_USE_PACKED_TVAL) -/* ======================================================================== */ - -/* - * Packed 8-byte representation - */ - -/* use duk_double_union as duk_tval directly */ -typedef union duk_double_union duk_tval; -typedef struct { - duk_uint16_t a; - duk_uint16_t b; - duk_uint16_t c; - duk_uint16_t d; -} duk_tval_unused; - -/* tags */ -#define DUK_TAG_NORMALIZED_NAN 0x7ff8UL /* the NaN variant we use */ -/* avoid tag 0xfff0, no risk of confusion with negative infinity */ -#define DUK_TAG_MIN 0xfff1UL -#if defined(DUK_USE_FASTINT) -#define DUK_TAG_FASTINT 0xfff1UL /* embed: integer value */ -#endif -#define DUK_TAG_UNUSED 0xfff2UL /* marker; not actual tagged value */ -#define DUK_TAG_UNDEFINED 0xfff3UL /* embed: nothing */ -#define DUK_TAG_NULL 0xfff4UL /* embed: nothing */ -#define DUK_TAG_BOOLEAN 0xfff5UL /* embed: 0 or 1 (false or true) */ -/* DUK_TAG_NUMBER would logically go here, but it has multiple 'tags' */ -#define DUK_TAG_POINTER 0xfff6UL /* embed: void ptr */ -#define DUK_TAG_LIGHTFUNC 0xfff7UL /* embed: func ptr */ -#define DUK_TAG_STRING 0xfff8UL /* embed: duk_hstring ptr */ -#define DUK_TAG_OBJECT 0xfff9UL /* embed: duk_hobject ptr */ -#define DUK_TAG_BUFFER 0xfffaUL /* embed: duk_hbuffer ptr */ -#define DUK_TAG_MAX 0xfffaUL - -/* for convenience */ -#define DUK_XTAG_BOOLEAN_FALSE 0xfff50000UL -#define DUK_XTAG_BOOLEAN_TRUE 0xfff50001UL - -#define DUK_TVAL_IS_VALID_TAG(tv) (DUK_TVAL_GET_TAG((tv)) - DUK_TAG_MIN <= DUK_TAG_MAX - DUK_TAG_MIN) - -/* DUK_TVAL_UNUSED initializer for duk_tval_unused, works for any endianness. */ -#define DUK_TVAL_UNUSED_INITIALIZER() \ - { DUK_TAG_UNUSED, DUK_TAG_UNUSED, DUK_TAG_UNUSED, DUK_TAG_UNUSED } - -/* two casts to avoid gcc warning: "warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]" */ -#if defined(DUK_USE_64BIT_OPS) -#if defined(DUK_USE_DOUBLE_ME) -#define DUK__TVAL_SET_TAGGEDPOINTER(tv, h, tag) \ - do { \ - (tv)->ull[DUK_DBL_IDX_ULL0] = (((duk_uint64_t) (tag)) << 16) | (((duk_uint64_t) (duk_uint32_t) (h)) << 32); \ - } while (0) -#else -#define DUK__TVAL_SET_TAGGEDPOINTER(tv, h, tag) \ - do { \ - (tv)->ull[DUK_DBL_IDX_ULL0] = (((duk_uint64_t) (tag)) << 48) | ((duk_uint64_t) (duk_uint32_t) (h)); \ - } while (0) -#endif -#else /* DUK_USE_64BIT_OPS */ -#define DUK__TVAL_SET_TAGGEDPOINTER(tv, h, tag) \ - do { \ - duk_tval *duk__tv; \ - duk__tv = (tv); \ - duk__tv->ui[DUK_DBL_IDX_UI0] = ((duk_uint32_t) (tag)) << 16; \ - duk__tv->ui[DUK_DBL_IDX_UI1] = (duk_uint32_t) (h); \ - } while (0) -#endif /* DUK_USE_64BIT_OPS */ - -#if defined(DUK_USE_64BIT_OPS) -/* Double casting for pointer to avoid gcc warning (cast from pointer to integer of different size) */ -#if defined(DUK_USE_DOUBLE_ME) -#define DUK__TVAL_SET_LIGHTFUNC(tv, fp, flags) \ - do { \ - (tv)->ull[DUK_DBL_IDX_ULL0] = (((duk_uint64_t) DUK_TAG_LIGHTFUNC) << 16) | ((duk_uint64_t) (flags)) | \ - (((duk_uint64_t) (duk_uint32_t) (fp)) << 32); \ - } while (0) -#else -#define DUK__TVAL_SET_LIGHTFUNC(tv, fp, flags) \ - do { \ - (tv)->ull[DUK_DBL_IDX_ULL0] = (((duk_uint64_t) DUK_TAG_LIGHTFUNC) << 48) | (((duk_uint64_t) (flags)) << 32) | \ - ((duk_uint64_t) (duk_uint32_t) (fp)); \ - } while (0) -#endif -#else /* DUK_USE_64BIT_OPS */ -#define DUK__TVAL_SET_LIGHTFUNC(tv, fp, flags) \ - do { \ - duk_tval *duk__tv; \ - duk__tv = (tv); \ - duk__tv->ui[DUK_DBL_IDX_UI0] = (((duk_uint32_t) DUK_TAG_LIGHTFUNC) << 16) | ((duk_uint32_t) (flags)); \ - duk__tv->ui[DUK_DBL_IDX_UI1] = (duk_uint32_t) (fp); \ - } while (0) -#endif /* DUK_USE_64BIT_OPS */ - -#if defined(DUK_USE_FASTINT) -/* Note: masking is done for 'i' to deal with negative numbers correctly */ -#if defined(DUK_USE_DOUBLE_ME) -#define DUK__TVAL_SET_I48(tv, i) \ - do { \ - duk_tval *duk__tv; \ - duk__tv = (tv); \ - duk__tv->ui[DUK_DBL_IDX_UI0] = \ - ((duk_uint32_t) DUK_TAG_FASTINT) << 16 | (((duk_uint32_t) ((i) >> 32)) & 0x0000ffffUL); \ - duk__tv->ui[DUK_DBL_IDX_UI1] = (duk_uint32_t) (i); \ - } while (0) -#define DUK__TVAL_SET_U32(tv, i) \ - do { \ - duk_tval *duk__tv; \ - duk__tv = (tv); \ - duk__tv->ui[DUK_DBL_IDX_UI0] = ((duk_uint32_t) DUK_TAG_FASTINT) << 16; \ - duk__tv->ui[DUK_DBL_IDX_UI1] = (duk_uint32_t) (i); \ - } while (0) -#else -#define DUK__TVAL_SET_I48(tv, i) \ - do { \ - (tv)->ull[DUK_DBL_IDX_ULL0] = \ - (((duk_uint64_t) DUK_TAG_FASTINT) << 48) | (((duk_uint64_t) (i)) & DUK_U64_CONSTANT(0x0000ffffffffffff)); \ - } while (0) -#define DUK__TVAL_SET_U32(tv, i) \ - do { \ - (tv)->ull[DUK_DBL_IDX_ULL0] = (((duk_uint64_t) DUK_TAG_FASTINT) << 48) | (duk_uint64_t) (i); \ - } while (0) -#endif - -/* This needs to go through a cast because sign extension is needed. */ -#define DUK__TVAL_SET_I32(tv, i) \ - do { \ - duk_int64_t duk__tmp = (duk_int64_t) (i); \ - DUK_TVAL_SET_I48((tv), duk__tmp); \ - } while (0) - -/* XXX: Clumsy sign extend and masking of 16 topmost bits. */ -#if defined(DUK_USE_DOUBLE_ME) -#define DUK__TVAL_GET_FASTINT(tv) \ - (((duk_int64_t) ((((duk_uint64_t) (tv)->ui[DUK_DBL_IDX_UI0]) << 32) | ((duk_uint64_t) (tv)->ui[DUK_DBL_IDX_UI1]))) \ - << 16 >> \ - 16) -#else -#define DUK__TVAL_GET_FASTINT(tv) ((((duk_int64_t) (tv)->ull[DUK_DBL_IDX_ULL0]) << 16) >> 16) -#endif -#define DUK__TVAL_GET_FASTINT_U32(tv) ((tv)->ui[DUK_DBL_IDX_UI1]) -#define DUK__TVAL_GET_FASTINT_I32(tv) ((duk_int32_t) (tv)->ui[DUK_DBL_IDX_UI1]) -#endif /* DUK_USE_FASTINT */ - -#define DUK_TVAL_SET_UNDEFINED(tv) \ - do { \ - (tv)->us[DUK_DBL_IDX_US0] = (duk_uint16_t) DUK_TAG_UNDEFINED; \ - } while (0) -#define DUK_TVAL_SET_UNUSED(tv) \ - do { \ - (tv)->us[DUK_DBL_IDX_US0] = (duk_uint16_t) DUK_TAG_UNUSED; \ - } while (0) -#define DUK_TVAL_SET_NULL(tv) \ - do { \ - (tv)->us[DUK_DBL_IDX_US0] = (duk_uint16_t) DUK_TAG_NULL; \ - } while (0) - -#define DUK_TVAL_SET_BOOLEAN(tv, val) \ - DUK_DBLUNION_SET_HIGH32((tv), (((duk_uint32_t) DUK_TAG_BOOLEAN) << 16) | ((duk_uint32_t) (val))) - -#define DUK_TVAL_SET_NAN(tv) DUK_DBLUNION_SET_NAN_FULL((tv)) - -/* Assumes that caller has normalized NaNs, otherwise trouble ahead. */ -#if defined(DUK_USE_FASTINT) -#define DUK_TVAL_SET_DOUBLE(tv, d) \ - do { \ - duk_double_t duk__dblval; \ - duk__dblval = (d); \ - DUK_ASSERT_DOUBLE_IS_NORMALIZED(duk__dblval); \ - DUK_DBLUNION_SET_DOUBLE((tv), duk__dblval); \ - } while (0) -#define DUK_TVAL_SET_I48(tv, i) DUK__TVAL_SET_I48((tv), (i)) -#define DUK_TVAL_SET_I32(tv, i) DUK__TVAL_SET_I32((tv), (i)) -#define DUK_TVAL_SET_U32(tv, i) DUK__TVAL_SET_U32((tv), (i)) -#define DUK_TVAL_SET_NUMBER_CHKFAST_FAST(tv, d) duk_tval_set_number_chkfast_fast((tv), (d)) -#define DUK_TVAL_SET_NUMBER_CHKFAST_SLOW(tv, d) duk_tval_set_number_chkfast_slow((tv), (d)) -#define DUK_TVAL_SET_NUMBER(tv, d) DUK_TVAL_SET_DOUBLE((tv), (d)) -#define DUK_TVAL_CHKFAST_INPLACE_FAST(tv) \ - do { \ - duk_tval *duk__tv; \ - duk_double_t duk__d; \ - duk__tv = (tv); \ - if (DUK_TVAL_IS_DOUBLE(duk__tv)) { \ - duk__d = DUK_TVAL_GET_DOUBLE(duk__tv); \ - DUK_TVAL_SET_NUMBER_CHKFAST_FAST(duk__tv, duk__d); \ - } \ - } while (0) -#define DUK_TVAL_CHKFAST_INPLACE_SLOW(tv) \ - do { \ - duk_tval *duk__tv; \ - duk_double_t duk__d; \ - duk__tv = (tv); \ - if (DUK_TVAL_IS_DOUBLE(duk__tv)) { \ - duk__d = DUK_TVAL_GET_DOUBLE(duk__tv); \ - DUK_TVAL_SET_NUMBER_CHKFAST_SLOW(duk__tv, duk__d); \ - } \ - } while (0) -#else /* DUK_USE_FASTINT */ -#define DUK_TVAL_SET_DOUBLE(tv, d) \ - do { \ - duk_double_t duk__dblval; \ - duk__dblval = (d); \ - DUK_ASSERT_DOUBLE_IS_NORMALIZED(duk__dblval); \ - DUK_DBLUNION_SET_DOUBLE((tv), duk__dblval); \ - } while (0) -#define DUK_TVAL_SET_I48(tv, i) DUK_TVAL_SET_DOUBLE((tv), (duk_double_t) (i)) /* XXX: fast int-to-double */ -#define DUK_TVAL_SET_I32(tv, i) DUK_TVAL_SET_DOUBLE((tv), (duk_double_t) (i)) -#define DUK_TVAL_SET_U32(tv, i) DUK_TVAL_SET_DOUBLE((tv), (duk_double_t) (i)) -#define DUK_TVAL_SET_NUMBER_CHKFAST_FAST(tv, d) DUK_TVAL_SET_DOUBLE((tv), (d)) -#define DUK_TVAL_SET_NUMBER_CHKFAST_SLOW(tv, d) DUK_TVAL_SET_DOUBLE((tv), (d)) -#define DUK_TVAL_SET_NUMBER(tv, d) DUK_TVAL_SET_DOUBLE((tv), (d)) -#define DUK_TVAL_CHKFAST_INPLACE_FAST(tv) \ - do { \ - } while (0) -#define DUK_TVAL_CHKFAST_INPLACE_SLOW(tv) \ - do { \ - } while (0) -#endif /* DUK_USE_FASTINT */ - -#define DUK_TVAL_SET_FASTINT(tv, i) DUK_TVAL_SET_I48((tv), (i)) /* alias */ - -#define DUK_TVAL_SET_LIGHTFUNC(tv, fp, flags) DUK__TVAL_SET_LIGHTFUNC((tv), (fp), (flags)) -#define DUK_TVAL_SET_STRING(tv, h) DUK__TVAL_SET_TAGGEDPOINTER((tv), (h), DUK_TAG_STRING) -#define DUK_TVAL_SET_OBJECT(tv, h) DUK__TVAL_SET_TAGGEDPOINTER((tv), (h), DUK_TAG_OBJECT) -#define DUK_TVAL_SET_BUFFER(tv, h) DUK__TVAL_SET_TAGGEDPOINTER((tv), (h), DUK_TAG_BUFFER) -#define DUK_TVAL_SET_POINTER(tv, p) DUK__TVAL_SET_TAGGEDPOINTER((tv), (p), DUK_TAG_POINTER) - -#define DUK_TVAL_SET_TVAL(tv, x) \ - do { \ - *(tv) = *(x); \ - } while (0) - -/* getters */ -#define DUK_TVAL_GET_BOOLEAN(tv) ((duk_small_uint_t) (tv)->us[DUK_DBL_IDX_US1]) -#if defined(DUK_USE_FASTINT) -#define DUK_TVAL_GET_DOUBLE(tv) ((tv)->d) -#define DUK_TVAL_GET_FASTINT(tv) DUK__TVAL_GET_FASTINT((tv)) -#define DUK_TVAL_GET_FASTINT_U32(tv) DUK__TVAL_GET_FASTINT_U32((tv)) -#define DUK_TVAL_GET_FASTINT_I32(tv) DUK__TVAL_GET_FASTINT_I32((tv)) -#define DUK_TVAL_GET_NUMBER(tv) duk_tval_get_number_packed((tv)) -#else -#define DUK_TVAL_GET_NUMBER(tv) ((tv)->d) -#define DUK_TVAL_GET_DOUBLE(tv) ((tv)->d) -#endif -#define DUK_TVAL_GET_LIGHTFUNC(tv, out_fp, out_flags) \ - do { \ - (out_flags) = (tv)->ui[DUK_DBL_IDX_UI0] & 0xffffUL; \ - (out_fp) = (duk_c_function) (tv)->ui[DUK_DBL_IDX_UI1]; \ - } while (0) -#define DUK_TVAL_GET_LIGHTFUNC_FUNCPTR(tv) ((duk_c_function) ((tv)->ui[DUK_DBL_IDX_UI1])) -#define DUK_TVAL_GET_LIGHTFUNC_FLAGS(tv) (((duk_small_uint_t) (tv)->ui[DUK_DBL_IDX_UI0]) & 0xffffUL) -#define DUK_TVAL_GET_STRING(tv) ((duk_hstring *) (tv)->vp[DUK_DBL_IDX_VP1]) -#define DUK_TVAL_GET_OBJECT(tv) ((duk_hobject *) (tv)->vp[DUK_DBL_IDX_VP1]) -#define DUK_TVAL_GET_BUFFER(tv) ((duk_hbuffer *) (tv)->vp[DUK_DBL_IDX_VP1]) -#define DUK_TVAL_GET_POINTER(tv) ((void *) (tv)->vp[DUK_DBL_IDX_VP1]) -#define DUK_TVAL_GET_HEAPHDR(tv) ((duk_heaphdr *) (tv)->vp[DUK_DBL_IDX_VP1]) - -/* decoding */ -#define DUK_TVAL_GET_TAG(tv) ((duk_small_uint_t) (tv)->us[DUK_DBL_IDX_US0]) - -#define DUK_TVAL_IS_UNDEFINED(tv) (DUK_TVAL_GET_TAG((tv)) == DUK_TAG_UNDEFINED) -#define DUK_TVAL_IS_UNUSED(tv) (DUK_TVAL_GET_TAG((tv)) == DUK_TAG_UNUSED) -#define DUK_TVAL_IS_NULL(tv) (DUK_TVAL_GET_TAG((tv)) == DUK_TAG_NULL) -#define DUK_TVAL_IS_BOOLEAN(tv) (DUK_TVAL_GET_TAG((tv)) == DUK_TAG_BOOLEAN) -#define DUK_TVAL_IS_BOOLEAN_TRUE(tv) ((tv)->ui[DUK_DBL_IDX_UI0] == DUK_XTAG_BOOLEAN_TRUE) -#define DUK_TVAL_IS_BOOLEAN_FALSE(tv) ((tv)->ui[DUK_DBL_IDX_UI0] == DUK_XTAG_BOOLEAN_FALSE) -#define DUK_TVAL_IS_LIGHTFUNC(tv) (DUK_TVAL_GET_TAG((tv)) == DUK_TAG_LIGHTFUNC) -#define DUK_TVAL_IS_STRING(tv) (DUK_TVAL_GET_TAG((tv)) == DUK_TAG_STRING) -#define DUK_TVAL_IS_OBJECT(tv) (DUK_TVAL_GET_TAG((tv)) == DUK_TAG_OBJECT) -#define DUK_TVAL_IS_BUFFER(tv) (DUK_TVAL_GET_TAG((tv)) == DUK_TAG_BUFFER) -#define DUK_TVAL_IS_POINTER(tv) (DUK_TVAL_GET_TAG((tv)) == DUK_TAG_POINTER) -#if defined(DUK_USE_FASTINT) -/* 0xfff0 is -Infinity */ -#define DUK_TVAL_IS_DOUBLE(tv) (DUK_TVAL_GET_TAG((tv)) <= 0xfff0UL) -#define DUK_TVAL_IS_FASTINT(tv) (DUK_TVAL_GET_TAG((tv)) == DUK_TAG_FASTINT) -#define DUK_TVAL_IS_NUMBER(tv) (DUK_TVAL_GET_TAG((tv)) <= 0xfff1UL) -#else -#define DUK_TVAL_IS_NUMBER(tv) (DUK_TVAL_GET_TAG((tv)) <= 0xfff0UL) -#define DUK_TVAL_IS_DOUBLE(tv) DUK_TVAL_IS_NUMBER((tv)) -#endif - -/* This is performance critical because it appears in every DECREF. */ -#define DUK_TVAL_IS_HEAP_ALLOCATED(tv) (DUK_TVAL_GET_TAG((tv)) >= DUK_TAG_STRING) - -#if defined(DUK_USE_FASTINT) -DUK_INTERNAL_DECL duk_double_t duk_tval_get_number_packed(duk_tval *tv); -#endif - -#else /* DUK_USE_PACKED_TVAL */ -/* ======================================================================== */ - -/* - * Portable 12-byte representation - */ - -/* Note: not initializing all bytes is normally not an issue: Duktape won't - * read or use the uninitialized bytes so valgrind won't issue warnings. - * In some special cases a harmless valgrind warning may be issued though. - * For example, the DumpHeap debugger command writes out a compiled function's - * 'data' area as is, including any uninitialized bytes, which causes a - * valgrind warning. - */ - -typedef struct duk_tval_struct duk_tval; - -struct duk_tval_struct { - duk_small_uint_t t; - duk_small_uint_t v_extra; - union { - duk_double_t d; - duk_small_int_t i; -#if defined(DUK_USE_FASTINT) - duk_int64_t fi; /* if present, forces 16-byte duk_tval */ -#endif - void *voidptr; - duk_hstring *hstring; - duk_hobject *hobject; - duk_hcompfunc *hcompfunc; - duk_hnatfunc *hnatfunc; - duk_hthread *hthread; - duk_hbuffer *hbuffer; - duk_heaphdr *heaphdr; - duk_c_function lightfunc; - } v; -}; - -typedef struct { - duk_small_uint_t t; - duk_small_uint_t v_extra; - /* The rest of the fields don't matter except for debug dumps and such - * for which a partial initializer may trigger out-ot-bounds memory - * reads. Include a double field which is usually as large or larger - * than pointers (not always however). - */ - duk_double_t d; -} duk_tval_unused; - -#define DUK_TVAL_UNUSED_INITIALIZER() \ - { DUK_TAG_UNUSED, 0, 0.0 } - -#define DUK_TAG_MIN 0 -#define DUK_TAG_NUMBER 0 /* DUK_TAG_NUMBER only defined for non-packed duk_tval */ -#if defined(DUK_USE_FASTINT) -#define DUK_TAG_FASTINT 1 -#endif -#define DUK_TAG_UNDEFINED 2 -#define DUK_TAG_NULL 3 -#define DUK_TAG_BOOLEAN 4 -#define DUK_TAG_POINTER 5 -#define DUK_TAG_LIGHTFUNC 6 -#define DUK_TAG_UNUSED 7 /* marker; not actual tagged type */ -#define DUK_TAG_STRING 8 /* first heap allocated, match bit boundary */ -#define DUK_TAG_OBJECT 9 -#define DUK_TAG_BUFFER 10 -#define DUK_TAG_MAX 10 - -#define DUK_TVAL_IS_VALID_TAG(tv) (DUK_TVAL_GET_TAG((tv)) - DUK_TAG_MIN <= DUK_TAG_MAX - DUK_TAG_MIN) - -/* DUK_TAG_NUMBER is intentionally first, as it is the default clause in code - * to support the 8-byte representation. Further, it is a non-heap-allocated - * type so it should come before DUK_TAG_STRING. Finally, it should not break - * the tag value ranges covered by case-clauses in a switch-case. - */ - -/* setters */ -#define DUK_TVAL_SET_UNDEFINED(tv) \ - do { \ - duk_tval *duk__tv; \ - duk__tv = (tv); \ - duk__tv->t = DUK_TAG_UNDEFINED; \ - } while (0) - -#define DUK_TVAL_SET_UNUSED(tv) \ - do { \ - duk_tval *duk__tv; \ - duk__tv = (tv); \ - duk__tv->t = DUK_TAG_UNUSED; \ - } while (0) - -#define DUK_TVAL_SET_NULL(tv) \ - do { \ - duk_tval *duk__tv; \ - duk__tv = (tv); \ - duk__tv->t = DUK_TAG_NULL; \ - } while (0) - -#define DUK_TVAL_SET_BOOLEAN(tv, val) \ - do { \ - duk_tval *duk__tv; \ - duk__tv = (tv); \ - duk__tv->t = DUK_TAG_BOOLEAN; \ - duk__tv->v.i = (duk_small_int_t) (val); \ - } while (0) - -#if defined(DUK_USE_FASTINT) -#define DUK_TVAL_SET_DOUBLE(tv, val) \ - do { \ - duk_tval *duk__tv; \ - duk_double_t duk__dblval; \ - duk__dblval = (val); \ - DUK_ASSERT_DOUBLE_IS_NORMALIZED(duk__dblval); /* nop for unpacked duk_tval */ \ - duk__tv = (tv); \ - duk__tv->t = DUK_TAG_NUMBER; \ - duk__tv->v.d = duk__dblval; \ - } while (0) -#define DUK_TVAL_SET_I48(tv, val) \ - do { \ - duk_tval *duk__tv; \ - duk__tv = (tv); \ - duk__tv->t = DUK_TAG_FASTINT; \ - duk__tv->v.fi = (val); \ - } while (0) -#define DUK_TVAL_SET_U32(tv, val) \ - do { \ - duk_tval *duk__tv; \ - duk__tv = (tv); \ - duk__tv->t = DUK_TAG_FASTINT; \ - duk__tv->v.fi = (duk_int64_t) (val); \ - } while (0) -#define DUK_TVAL_SET_I32(tv, val) \ - do { \ - duk_tval *duk__tv; \ - duk__tv = (tv); \ - duk__tv->t = DUK_TAG_FASTINT; \ - duk__tv->v.fi = (duk_int64_t) (val); \ - } while (0) -#define DUK_TVAL_SET_NUMBER_CHKFAST_FAST(tv, d) duk_tval_set_number_chkfast_fast((tv), (d)) -#define DUK_TVAL_SET_NUMBER_CHKFAST_SLOW(tv, d) duk_tval_set_number_chkfast_slow((tv), (d)) -#define DUK_TVAL_SET_NUMBER(tv, val) DUK_TVAL_SET_DOUBLE((tv), (val)) -#define DUK_TVAL_CHKFAST_INPLACE_FAST(tv) \ - do { \ - duk_tval *duk__tv; \ - duk_double_t duk__d; \ - duk__tv = (tv); \ - if (DUK_TVAL_IS_DOUBLE(duk__tv)) { \ - duk__d = DUK_TVAL_GET_DOUBLE(duk__tv); \ - DUK_TVAL_SET_NUMBER_CHKFAST_FAST(duk__tv, duk__d); \ - } \ - } while (0) -#define DUK_TVAL_CHKFAST_INPLACE_SLOW(tv) \ - do { \ - duk_tval *duk__tv; \ - duk_double_t duk__d; \ - duk__tv = (tv); \ - if (DUK_TVAL_IS_DOUBLE(duk__tv)) { \ - duk__d = DUK_TVAL_GET_DOUBLE(duk__tv); \ - DUK_TVAL_SET_NUMBER_CHKFAST_SLOW(duk__tv, duk__d); \ - } \ - } while (0) -#else /* DUK_USE_FASTINT */ -#define DUK_TVAL_SET_DOUBLE(tv, d) DUK_TVAL_SET_NUMBER((tv), (d)) -#define DUK_TVAL_SET_I48(tv, val) DUK_TVAL_SET_NUMBER((tv), (duk_double_t) (val)) /* XXX: fast int-to-double */ -#define DUK_TVAL_SET_U32(tv, val) DUK_TVAL_SET_NUMBER((tv), (duk_double_t) (val)) -#define DUK_TVAL_SET_I32(tv, val) DUK_TVAL_SET_NUMBER((tv), (duk_double_t) (val)) -#define DUK_TVAL_SET_NUMBER(tv, val) \ - do { \ - duk_tval *duk__tv; \ - duk_double_t duk__dblval; \ - duk__dblval = (val); \ - DUK_ASSERT_DOUBLE_IS_NORMALIZED(duk__dblval); /* nop for unpacked duk_tval */ \ - duk__tv = (tv); \ - duk__tv->t = DUK_TAG_NUMBER; \ - duk__tv->v.d = duk__dblval; \ - } while (0) -#define DUK_TVAL_SET_NUMBER_CHKFAST_FAST(tv, d) DUK_TVAL_SET_NUMBER((tv), (d)) -#define DUK_TVAL_SET_NUMBER_CHKFAST_SLOW(tv, d) DUK_TVAL_SET_NUMBER((tv), (d)) -#define DUK_TVAL_CHKFAST_INPLACE_FAST(tv) \ - do { \ - } while (0) -#define DUK_TVAL_CHKFAST_INPLACE_SLOW(tv) \ - do { \ - } while (0) -#endif /* DUK_USE_FASTINT */ - -#define DUK_TVAL_SET_FASTINT(tv, i) DUK_TVAL_SET_I48((tv), (i)) /* alias */ - -#define DUK_TVAL_SET_POINTER(tv, hptr) \ - do { \ - duk_tval *duk__tv; \ - duk__tv = (tv); \ - duk__tv->t = DUK_TAG_POINTER; \ - duk__tv->v.voidptr = (hptr); \ - } while (0) - -#define DUK_TVAL_SET_LIGHTFUNC(tv, fp, flags) \ - do { \ - duk_tval *duk__tv; \ - duk__tv = (tv); \ - duk__tv->t = DUK_TAG_LIGHTFUNC; \ - duk__tv->v_extra = (flags); \ - duk__tv->v.lightfunc = (duk_c_function) (fp); \ - } while (0) - -#define DUK_TVAL_SET_STRING(tv, hptr) \ - do { \ - duk_tval *duk__tv; \ - duk__tv = (tv); \ - duk__tv->t = DUK_TAG_STRING; \ - duk__tv->v.hstring = (hptr); \ - } while (0) - -#define DUK_TVAL_SET_OBJECT(tv, hptr) \ - do { \ - duk_tval *duk__tv; \ - duk__tv = (tv); \ - duk__tv->t = DUK_TAG_OBJECT; \ - duk__tv->v.hobject = (hptr); \ - } while (0) - -#define DUK_TVAL_SET_BUFFER(tv, hptr) \ - do { \ - duk_tval *duk__tv; \ - duk__tv = (tv); \ - duk__tv->t = DUK_TAG_BUFFER; \ - duk__tv->v.hbuffer = (hptr); \ - } while (0) - -#define DUK_TVAL_SET_NAN(tv) \ - do { \ - /* in non-packed representation we don't care about which NaN is used */ \ - duk_tval *duk__tv; \ - duk__tv = (tv); \ - duk__tv->t = DUK_TAG_NUMBER; \ - duk__tv->v.d = DUK_DOUBLE_NAN; \ - } while (0) - -#define DUK_TVAL_SET_TVAL(tv, x) \ - do { \ - *(tv) = *(x); \ - } while (0) - -/* getters */ -#define DUK_TVAL_GET_BOOLEAN(tv) ((duk_small_uint_t) (tv)->v.i) -#if defined(DUK_USE_FASTINT) -#define DUK_TVAL_GET_DOUBLE(tv) ((tv)->v.d) -#define DUK_TVAL_GET_FASTINT(tv) ((tv)->v.fi) -#define DUK_TVAL_GET_FASTINT_U32(tv) ((duk_uint32_t) ((tv)->v.fi)) -#define DUK_TVAL_GET_FASTINT_I32(tv) ((duk_int32_t) ((tv)->v.fi)) -#if 0 -#define DUK_TVAL_GET_NUMBER(tv) (DUK_TVAL_IS_FASTINT((tv)) ? (duk_double_t) DUK_TVAL_GET_FASTINT((tv)) : DUK_TVAL_GET_DOUBLE((tv))) -#define DUK_TVAL_GET_NUMBER(tv) duk_tval_get_number_unpacked((tv)) -#else -/* This seems reasonable overall. */ -#define DUK_TVAL_GET_NUMBER(tv) (DUK_TVAL_IS_FASTINT((tv)) ? duk_tval_get_number_unpacked_fastint((tv)) : DUK_TVAL_GET_DOUBLE((tv))) -#endif -#else -#define DUK_TVAL_GET_NUMBER(tv) ((tv)->v.d) -#define DUK_TVAL_GET_DOUBLE(tv) ((tv)->v.d) -#endif /* DUK_USE_FASTINT */ -#define DUK_TVAL_GET_POINTER(tv) ((tv)->v.voidptr) -#define DUK_TVAL_GET_LIGHTFUNC(tv, out_fp, out_flags) \ - do { \ - (out_flags) = (duk_uint32_t) (tv)->v_extra; \ - (out_fp) = (tv)->v.lightfunc; \ - } while (0) -#define DUK_TVAL_GET_LIGHTFUNC_FUNCPTR(tv) ((tv)->v.lightfunc) -#define DUK_TVAL_GET_LIGHTFUNC_FLAGS(tv) ((duk_small_uint_t) ((tv)->v_extra)) -#define DUK_TVAL_GET_STRING(tv) ((tv)->v.hstring) -#define DUK_TVAL_GET_OBJECT(tv) ((tv)->v.hobject) -#define DUK_TVAL_GET_BUFFER(tv) ((tv)->v.hbuffer) -#define DUK_TVAL_GET_HEAPHDR(tv) ((tv)->v.heaphdr) - -/* decoding */ -#define DUK_TVAL_GET_TAG(tv) ((tv)->t) -#define DUK_TVAL_IS_UNDEFINED(tv) ((tv)->t == DUK_TAG_UNDEFINED) -#define DUK_TVAL_IS_UNUSED(tv) ((tv)->t == DUK_TAG_UNUSED) -#define DUK_TVAL_IS_NULL(tv) ((tv)->t == DUK_TAG_NULL) -#define DUK_TVAL_IS_BOOLEAN(tv) ((tv)->t == DUK_TAG_BOOLEAN) -#define DUK_TVAL_IS_BOOLEAN_TRUE(tv) (((tv)->t == DUK_TAG_BOOLEAN) && ((tv)->v.i != 0)) -#define DUK_TVAL_IS_BOOLEAN_FALSE(tv) (((tv)->t == DUK_TAG_BOOLEAN) && ((tv)->v.i == 0)) -#if defined(DUK_USE_FASTINT) -#define DUK_TVAL_IS_DOUBLE(tv) ((tv)->t == DUK_TAG_NUMBER) -#define DUK_TVAL_IS_FASTINT(tv) ((tv)->t == DUK_TAG_FASTINT) -#define DUK_TVAL_IS_NUMBER(tv) ((tv)->t == DUK_TAG_NUMBER || (tv)->t == DUK_TAG_FASTINT) -#else -#define DUK_TVAL_IS_NUMBER(tv) ((tv)->t == DUK_TAG_NUMBER) -#define DUK_TVAL_IS_DOUBLE(tv) DUK_TVAL_IS_NUMBER((tv)) -#endif /* DUK_USE_FASTINT */ -#define DUK_TVAL_IS_POINTER(tv) ((tv)->t == DUK_TAG_POINTER) -#define DUK_TVAL_IS_LIGHTFUNC(tv) ((tv)->t == DUK_TAG_LIGHTFUNC) -#define DUK_TVAL_IS_STRING(tv) ((tv)->t == DUK_TAG_STRING) -#define DUK_TVAL_IS_OBJECT(tv) ((tv)->t == DUK_TAG_OBJECT) -#define DUK_TVAL_IS_BUFFER(tv) ((tv)->t == DUK_TAG_BUFFER) - -/* This is performance critical because it's needed for every DECREF. - * Take advantage of the fact that the first heap allocated tag is 8, - * so that bit 3 is set for all heap allocated tags (and never set for - * non-heap-allocated tags). - */ -#if 0 -#define DUK_TVAL_IS_HEAP_ALLOCATED(tv) ((tv)->t >= DUK_TAG_STRING) -#endif -#define DUK_TVAL_IS_HEAP_ALLOCATED(tv) ((tv)->t & 0x08) - -#if defined(DUK_USE_FASTINT) -#if 0 -DUK_INTERNAL_DECL duk_double_t duk_tval_get_number_unpacked(duk_tval *tv); -#endif -DUK_INTERNAL_DECL duk_double_t duk_tval_get_number_unpacked_fastint(duk_tval *tv); -#endif - -#endif /* DUK_USE_PACKED_TVAL */ - -/* - * Convenience (independent of representation) - */ - -#define DUK_TVAL_SET_BOOLEAN_TRUE(tv) DUK_TVAL_SET_BOOLEAN((tv), 1) -#define DUK_TVAL_SET_BOOLEAN_FALSE(tv) DUK_TVAL_SET_BOOLEAN((tv), 0) - -#define DUK_TVAL_STRING_IS_SYMBOL(tv) DUK_HSTRING_HAS_SYMBOL(DUK_TVAL_GET_STRING((tv))) - -/* Lightfunc flags packing and unpacking. */ -/* Sign extend: 0x0000##00 -> 0x##000000 -> sign extend to 0xssssss##. - * Avoid signed shifts due to portability limitations. - */ -#define DUK_LFUNC_FLAGS_GET_MAGIC(lf_flags) ((duk_int32_t) (duk_int8_t) (((duk_uint16_t) (lf_flags)) >> 8)) -#define DUK_LFUNC_FLAGS_GET_LENGTH(lf_flags) (((lf_flags) >> 4) & 0x0fU) -#define DUK_LFUNC_FLAGS_GET_NARGS(lf_flags) ((lf_flags) &0x0fU) -#define DUK_LFUNC_FLAGS_PACK(magic, length, nargs) ((((duk_small_uint_t) (magic)) & 0xffU) << 8) | ((length) << 4) | (nargs) - -#define DUK_LFUNC_NARGS_VARARGS 0x0f /* varargs marker */ -#define DUK_LFUNC_NARGS_MIN 0x00 -#define DUK_LFUNC_NARGS_MAX 0x0e /* max, excl. varargs marker */ -#define DUK_LFUNC_LENGTH_MIN 0x00 -#define DUK_LFUNC_LENGTH_MAX 0x0f -#define DUK_LFUNC_MAGIC_MIN (-0x80) -#define DUK_LFUNC_MAGIC_MAX 0x7f - -/* fastint constants etc */ -#if defined(DUK_USE_FASTINT) -#define DUK_FASTINT_MIN (DUK_I64_CONSTANT(-0x800000000000)) -#define DUK_FASTINT_MAX (DUK_I64_CONSTANT(0x7fffffffffff)) -#define DUK_FASTINT_BITS 48 - -DUK_INTERNAL_DECL void duk_tval_set_number_chkfast_fast(duk_tval *tv, duk_double_t x); -DUK_INTERNAL_DECL void duk_tval_set_number_chkfast_slow(duk_tval *tv, duk_double_t x); -#endif - -#if defined(DUK_USE_ASSERTIONS) -DUK_INTERNAL_DECL void duk_tval_assert_valid(duk_tval *tv); -#define DUK_TVAL_ASSERT_VALID(tv) \ - do { \ - duk_tval_assert_valid((tv)); \ - } while (0) -#else -#define DUK_TVAL_ASSERT_VALID(tv) \ - do { \ - } while (0) -#endif - -#endif /* DUK_TVAL_H_INCLUDED */ -/* #include duk_builtins.h */ -#line 1 "duk_builtins.h" -/* - * Automatically generated by genbuiltins.py, do not edit! - */ - -#if !defined(DUK_BUILTINS_H_INCLUDED) -#define DUK_BUILTINS_H_INCLUDED - -#if defined(DUK_USE_ROM_STRINGS) -#error ROM support not enabled, rerun configure.py with --rom-support -#else /* DUK_USE_ROM_STRINGS */ -#define DUK_STRIDX_UC_UNDEFINED 0 /* 'Undefined' */ -#define DUK_HEAP_STRING_UC_UNDEFINED(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_UC_UNDEFINED) -#define DUK_HTHREAD_STRING_UC_UNDEFINED(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_UC_UNDEFINED) -#define DUK_STRIDX_UC_NULL 1 /* 'Null' */ -#define DUK_HEAP_STRING_UC_NULL(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_UC_NULL) -#define DUK_HTHREAD_STRING_UC_NULL(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_UC_NULL) -#define DUK_STRIDX_UC_SYMBOL 2 /* 'Symbol' */ -#define DUK_HEAP_STRING_UC_SYMBOL(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_UC_SYMBOL) -#define DUK_HTHREAD_STRING_UC_SYMBOL(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_UC_SYMBOL) -#define DUK_STRIDX_UC_ARGUMENTS 3 /* 'Arguments' */ -#define DUK_HEAP_STRING_UC_ARGUMENTS(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_UC_ARGUMENTS) -#define DUK_HTHREAD_STRING_UC_ARGUMENTS(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_UC_ARGUMENTS) -#define DUK_STRIDX_UC_OBJECT 4 /* 'Object' */ -#define DUK_HEAP_STRING_UC_OBJECT(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_UC_OBJECT) -#define DUK_HTHREAD_STRING_UC_OBJECT(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_UC_OBJECT) -#define DUK_STRIDX_UC_FUNCTION 5 /* 'Function' */ -#define DUK_HEAP_STRING_UC_FUNCTION(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_UC_FUNCTION) -#define DUK_HTHREAD_STRING_UC_FUNCTION(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_UC_FUNCTION) -#define DUK_STRIDX_UC_ARRAY 6 /* 'Array' */ -#define DUK_HEAP_STRING_UC_ARRAY(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_UC_ARRAY) -#define DUK_HTHREAD_STRING_UC_ARRAY(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_UC_ARRAY) -#define DUK_STRIDX_UC_STRING 7 /* 'String' */ -#define DUK_HEAP_STRING_UC_STRING(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_UC_STRING) -#define DUK_HTHREAD_STRING_UC_STRING(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_UC_STRING) -#define DUK_STRIDX_UC_BOOLEAN 8 /* 'Boolean' */ -#define DUK_HEAP_STRING_UC_BOOLEAN(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_UC_BOOLEAN) -#define DUK_HTHREAD_STRING_UC_BOOLEAN(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_UC_BOOLEAN) -#define DUK_STRIDX_UC_NUMBER 9 /* 'Number' */ -#define DUK_HEAP_STRING_UC_NUMBER(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_UC_NUMBER) -#define DUK_HTHREAD_STRING_UC_NUMBER(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_UC_NUMBER) -#define DUK_STRIDX_UC_DATE 10 /* 'Date' */ -#define DUK_HEAP_STRING_UC_DATE(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_UC_DATE) -#define DUK_HTHREAD_STRING_UC_DATE(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_UC_DATE) -#define DUK_STRIDX_REG_EXP 11 /* 'RegExp' */ -#define DUK_HEAP_STRING_REG_EXP(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_REG_EXP) -#define DUK_HTHREAD_STRING_REG_EXP(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_REG_EXP) -#define DUK_STRIDX_UC_ERROR 12 /* 'Error' */ -#define DUK_HEAP_STRING_UC_ERROR(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_UC_ERROR) -#define DUK_HTHREAD_STRING_UC_ERROR(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_UC_ERROR) -#define DUK_STRIDX_MATH 13 /* 'Math' */ -#define DUK_HEAP_STRING_MATH(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_MATH) -#define DUK_HTHREAD_STRING_MATH(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_MATH) -#define DUK_STRIDX_JSON 14 /* 'JSON' */ -#define DUK_HEAP_STRING_JSON(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_JSON) -#define DUK_HTHREAD_STRING_JSON(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_JSON) -#define DUK_STRIDX_EMPTY_STRING 15 /* '' */ -#define DUK_HEAP_STRING_EMPTY_STRING(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_EMPTY_STRING) -#define DUK_HTHREAD_STRING_EMPTY_STRING(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_EMPTY_STRING) -#define DUK_STRIDX_ARRAY_BUFFER 16 /* 'ArrayBuffer' */ -#define DUK_HEAP_STRING_ARRAY_BUFFER(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_ARRAY_BUFFER) -#define DUK_HTHREAD_STRING_ARRAY_BUFFER(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_ARRAY_BUFFER) -#define DUK_STRIDX_DATA_VIEW 17 /* 'DataView' */ -#define DUK_HEAP_STRING_DATA_VIEW(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_DATA_VIEW) -#define DUK_HTHREAD_STRING_DATA_VIEW(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_DATA_VIEW) -#define DUK_STRIDX_INT8_ARRAY 18 /* 'Int8Array' */ -#define DUK_HEAP_STRING_INT8_ARRAY(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_INT8_ARRAY) -#define DUK_HTHREAD_STRING_INT8_ARRAY(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_INT8_ARRAY) -#define DUK_STRIDX_UINT8_ARRAY 19 /* 'Uint8Array' */ -#define DUK_HEAP_STRING_UINT8_ARRAY(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_UINT8_ARRAY) -#define DUK_HTHREAD_STRING_UINT8_ARRAY(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_UINT8_ARRAY) -#define DUK_STRIDX_UINT8_CLAMPED_ARRAY 20 /* 'Uint8ClampedArray' */ -#define DUK_HEAP_STRING_UINT8_CLAMPED_ARRAY(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_UINT8_CLAMPED_ARRAY) -#define DUK_HTHREAD_STRING_UINT8_CLAMPED_ARRAY(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_UINT8_CLAMPED_ARRAY) -#define DUK_STRIDX_INT16_ARRAY 21 /* 'Int16Array' */ -#define DUK_HEAP_STRING_INT16_ARRAY(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_INT16_ARRAY) -#define DUK_HTHREAD_STRING_INT16_ARRAY(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_INT16_ARRAY) -#define DUK_STRIDX_UINT16_ARRAY 22 /* 'Uint16Array' */ -#define DUK_HEAP_STRING_UINT16_ARRAY(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_UINT16_ARRAY) -#define DUK_HTHREAD_STRING_UINT16_ARRAY(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_UINT16_ARRAY) -#define DUK_STRIDX_INT32_ARRAY 23 /* 'Int32Array' */ -#define DUK_HEAP_STRING_INT32_ARRAY(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_INT32_ARRAY) -#define DUK_HTHREAD_STRING_INT32_ARRAY(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_INT32_ARRAY) -#define DUK_STRIDX_UINT32_ARRAY 24 /* 'Uint32Array' */ -#define DUK_HEAP_STRING_UINT32_ARRAY(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_UINT32_ARRAY) -#define DUK_HTHREAD_STRING_UINT32_ARRAY(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_UINT32_ARRAY) -#define DUK_STRIDX_FLOAT32_ARRAY 25 /* 'Float32Array' */ -#define DUK_HEAP_STRING_FLOAT32_ARRAY(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_FLOAT32_ARRAY) -#define DUK_HTHREAD_STRING_FLOAT32_ARRAY(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_FLOAT32_ARRAY) -#define DUK_STRIDX_FLOAT64_ARRAY 26 /* 'Float64Array' */ -#define DUK_HEAP_STRING_FLOAT64_ARRAY(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_FLOAT64_ARRAY) -#define DUK_HTHREAD_STRING_FLOAT64_ARRAY(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_FLOAT64_ARRAY) -#define DUK_STRIDX_GLOBAL 27 /* 'global' */ -#define DUK_HEAP_STRING_GLOBAL(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_GLOBAL) -#define DUK_HTHREAD_STRING_GLOBAL(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_GLOBAL) -#define DUK_STRIDX_OBJ_ENV 28 /* 'ObjEnv' */ -#define DUK_HEAP_STRING_OBJ_ENV(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_OBJ_ENV) -#define DUK_HTHREAD_STRING_OBJ_ENV(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_OBJ_ENV) -#define DUK_STRIDX_DEC_ENV 29 /* 'DecEnv' */ -#define DUK_HEAP_STRING_DEC_ENV(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_DEC_ENV) -#define DUK_HTHREAD_STRING_DEC_ENV(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_DEC_ENV) -#define DUK_STRIDX_UC_BUFFER 30 /* 'Buffer' */ -#define DUK_HEAP_STRING_UC_BUFFER(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_UC_BUFFER) -#define DUK_HTHREAD_STRING_UC_BUFFER(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_UC_BUFFER) -#define DUK_STRIDX_UC_POINTER 31 /* 'Pointer' */ -#define DUK_HEAP_STRING_UC_POINTER(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_UC_POINTER) -#define DUK_HTHREAD_STRING_UC_POINTER(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_UC_POINTER) -#define DUK_STRIDX_UC_THREAD 32 /* 'Thread' */ -#define DUK_HEAP_STRING_UC_THREAD(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_UC_THREAD) -#define DUK_HTHREAD_STRING_UC_THREAD(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_UC_THREAD) -#define DUK_STRIDX_EVAL 33 /* 'eval' */ -#define DUK_HEAP_STRING_EVAL(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_EVAL) -#define DUK_HTHREAD_STRING_EVAL(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_EVAL) -#define DUK_STRIDX_VALUE 34 /* 'value' */ -#define DUK_HEAP_STRING_VALUE(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_VALUE) -#define DUK_HTHREAD_STRING_VALUE(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_VALUE) -#define DUK_STRIDX_WRITABLE 35 /* 'writable' */ -#define DUK_HEAP_STRING_WRITABLE(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_WRITABLE) -#define DUK_HTHREAD_STRING_WRITABLE(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_WRITABLE) -#define DUK_STRIDX_CONFIGURABLE 36 /* 'configurable' */ -#define DUK_HEAP_STRING_CONFIGURABLE(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_CONFIGURABLE) -#define DUK_HTHREAD_STRING_CONFIGURABLE(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_CONFIGURABLE) -#define DUK_STRIDX_ENUMERABLE 37 /* 'enumerable' */ -#define DUK_HEAP_STRING_ENUMERABLE(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_ENUMERABLE) -#define DUK_HTHREAD_STRING_ENUMERABLE(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_ENUMERABLE) -#define DUK_STRIDX_JOIN 38 /* 'join' */ -#define DUK_HEAP_STRING_JOIN(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_JOIN) -#define DUK_HTHREAD_STRING_JOIN(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_JOIN) -#define DUK_STRIDX_TO_LOCALE_STRING 39 /* 'toLocaleString' */ -#define DUK_HEAP_STRING_TO_LOCALE_STRING(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_TO_LOCALE_STRING) -#define DUK_HTHREAD_STRING_TO_LOCALE_STRING(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_TO_LOCALE_STRING) -#define DUK_STRIDX_VALUE_OF 40 /* 'valueOf' */ -#define DUK_HEAP_STRING_VALUE_OF(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_VALUE_OF) -#define DUK_HTHREAD_STRING_VALUE_OF(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_VALUE_OF) -#define DUK_STRIDX_TO_UTC_STRING 41 /* 'toUTCString' */ -#define DUK_HEAP_STRING_TO_UTC_STRING(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_TO_UTC_STRING) -#define DUK_HTHREAD_STRING_TO_UTC_STRING(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_TO_UTC_STRING) -#define DUK_STRIDX_TO_ISO_STRING 42 /* 'toISOString' */ -#define DUK_HEAP_STRING_TO_ISO_STRING(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_TO_ISO_STRING) -#define DUK_HTHREAD_STRING_TO_ISO_STRING(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_TO_ISO_STRING) -#define DUK_STRIDX_TO_GMT_STRING 43 /* 'toGMTString' */ -#define DUK_HEAP_STRING_TO_GMT_STRING(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_TO_GMT_STRING) -#define DUK_HTHREAD_STRING_TO_GMT_STRING(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_TO_GMT_STRING) -#define DUK_STRIDX_SOURCE 44 /* 'source' */ -#define DUK_HEAP_STRING_SOURCE(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_SOURCE) -#define DUK_HTHREAD_STRING_SOURCE(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_SOURCE) -#define DUK_STRIDX_IGNORE_CASE 45 /* 'ignoreCase' */ -#define DUK_HEAP_STRING_IGNORE_CASE(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_IGNORE_CASE) -#define DUK_HTHREAD_STRING_IGNORE_CASE(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_IGNORE_CASE) -#define DUK_STRIDX_MULTILINE 46 /* 'multiline' */ -#define DUK_HEAP_STRING_MULTILINE(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_MULTILINE) -#define DUK_HTHREAD_STRING_MULTILINE(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_MULTILINE) -#define DUK_STRIDX_LAST_INDEX 47 /* 'lastIndex' */ -#define DUK_HEAP_STRING_LAST_INDEX(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_LAST_INDEX) -#define DUK_HTHREAD_STRING_LAST_INDEX(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_LAST_INDEX) -#define DUK_STRIDX_FLAGS 48 /* 'flags' */ -#define DUK_HEAP_STRING_FLAGS(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_FLAGS) -#define DUK_HTHREAD_STRING_FLAGS(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_FLAGS) -#define DUK_STRIDX_INDEX 49 /* 'index' */ -#define DUK_HEAP_STRING_INDEX(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_INDEX) -#define DUK_HTHREAD_STRING_INDEX(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_INDEX) -#define DUK_STRIDX_PROTOTYPE 50 /* 'prototype' */ -#define DUK_HEAP_STRING_PROTOTYPE(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_PROTOTYPE) -#define DUK_HTHREAD_STRING_PROTOTYPE(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_PROTOTYPE) -#define DUK_STRIDX_CONSTRUCTOR 51 /* 'constructor' */ -#define DUK_HEAP_STRING_CONSTRUCTOR(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_CONSTRUCTOR) -#define DUK_HTHREAD_STRING_CONSTRUCTOR(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_CONSTRUCTOR) -#define DUK_STRIDX_MESSAGE 52 /* 'message' */ -#define DUK_HEAP_STRING_MESSAGE(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_MESSAGE) -#define DUK_HTHREAD_STRING_MESSAGE(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_MESSAGE) -#define DUK_STRIDX_LC_BOOLEAN 53 /* 'boolean' */ -#define DUK_HEAP_STRING_LC_BOOLEAN(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_LC_BOOLEAN) -#define DUK_HTHREAD_STRING_LC_BOOLEAN(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_LC_BOOLEAN) -#define DUK_STRIDX_LC_NUMBER 54 /* 'number' */ -#define DUK_HEAP_STRING_LC_NUMBER(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_LC_NUMBER) -#define DUK_HTHREAD_STRING_LC_NUMBER(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_LC_NUMBER) -#define DUK_STRIDX_LC_STRING 55 /* 'string' */ -#define DUK_HEAP_STRING_LC_STRING(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_LC_STRING) -#define DUK_HTHREAD_STRING_LC_STRING(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_LC_STRING) -#define DUK_STRIDX_LC_SYMBOL 56 /* 'symbol' */ -#define DUK_HEAP_STRING_LC_SYMBOL(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_LC_SYMBOL) -#define DUK_HTHREAD_STRING_LC_SYMBOL(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_LC_SYMBOL) -#define DUK_STRIDX_LC_OBJECT 57 /* 'object' */ -#define DUK_HEAP_STRING_LC_OBJECT(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_LC_OBJECT) -#define DUK_HTHREAD_STRING_LC_OBJECT(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_LC_OBJECT) -#define DUK_STRIDX_LC_UNDEFINED 58 /* 'undefined' */ -#define DUK_HEAP_STRING_LC_UNDEFINED(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_LC_UNDEFINED) -#define DUK_HTHREAD_STRING_LC_UNDEFINED(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_LC_UNDEFINED) -#define DUK_STRIDX_NAN 59 /* 'NaN' */ -#define DUK_HEAP_STRING_NAN(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_NAN) -#define DUK_HTHREAD_STRING_NAN(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_NAN) -#define DUK_STRIDX_INFINITY 60 /* 'Infinity' */ -#define DUK_HEAP_STRING_INFINITY(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_INFINITY) -#define DUK_HTHREAD_STRING_INFINITY(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_INFINITY) -#define DUK_STRIDX_MINUS_INFINITY 61 /* '-Infinity' */ -#define DUK_HEAP_STRING_MINUS_INFINITY(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_MINUS_INFINITY) -#define DUK_HTHREAD_STRING_MINUS_INFINITY(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_MINUS_INFINITY) -#define DUK_STRIDX_MINUS_ZERO 62 /* '-0' */ -#define DUK_HEAP_STRING_MINUS_ZERO(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_MINUS_ZERO) -#define DUK_HTHREAD_STRING_MINUS_ZERO(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_MINUS_ZERO) -#define DUK_STRIDX_COMMA 63 /* ',' */ -#define DUK_HEAP_STRING_COMMA(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_COMMA) -#define DUK_HTHREAD_STRING_COMMA(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_COMMA) -#define DUK_STRIDX_NEWLINE_4SPACE 64 /* '\n ' */ -#define DUK_HEAP_STRING_NEWLINE_4SPACE(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_NEWLINE_4SPACE) -#define DUK_HTHREAD_STRING_NEWLINE_4SPACE(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_NEWLINE_4SPACE) -#define DUK_STRIDX_BRACKETED_ELLIPSIS 65 /* '[...]' */ -#define DUK_HEAP_STRING_BRACKETED_ELLIPSIS(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_BRACKETED_ELLIPSIS) -#define DUK_HTHREAD_STRING_BRACKETED_ELLIPSIS(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_BRACKETED_ELLIPSIS) -#define DUK_STRIDX_INVALID_DATE 66 /* 'Invalid Date' */ -#define DUK_HEAP_STRING_INVALID_DATE(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_INVALID_DATE) -#define DUK_HTHREAD_STRING_INVALID_DATE(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_INVALID_DATE) -#define DUK_STRIDX_LC_ARGUMENTS 67 /* 'arguments' */ -#define DUK_HEAP_STRING_LC_ARGUMENTS(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_LC_ARGUMENTS) -#define DUK_HTHREAD_STRING_LC_ARGUMENTS(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_LC_ARGUMENTS) -#define DUK_STRIDX_CALLEE 68 /* 'callee' */ -#define DUK_HEAP_STRING_CALLEE(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_CALLEE) -#define DUK_HTHREAD_STRING_CALLEE(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_CALLEE) -#define DUK_STRIDX_CALLER 69 /* 'caller' */ -#define DUK_HEAP_STRING_CALLER(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_CALLER) -#define DUK_HTHREAD_STRING_CALLER(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_CALLER) -#define DUK_STRIDX_APPLY 70 /* 'apply' */ -#define DUK_HEAP_STRING_APPLY(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_APPLY) -#define DUK_HTHREAD_STRING_APPLY(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_APPLY) -#define DUK_STRIDX_CONSTRUCT 71 /* 'construct' */ -#define DUK_HEAP_STRING_CONSTRUCT(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_CONSTRUCT) -#define DUK_HTHREAD_STRING_CONSTRUCT(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_CONSTRUCT) -#define DUK_STRIDX_DELETE_PROPERTY 72 /* 'deleteProperty' */ -#define DUK_HEAP_STRING_DELETE_PROPERTY(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_DELETE_PROPERTY) -#define DUK_HTHREAD_STRING_DELETE_PROPERTY(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_DELETE_PROPERTY) -#define DUK_STRIDX_GET 73 /* 'get' */ -#define DUK_HEAP_STRING_GET(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_GET) -#define DUK_HTHREAD_STRING_GET(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_GET) -#define DUK_STRIDX_HAS 74 /* 'has' */ -#define DUK_HEAP_STRING_HAS(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_HAS) -#define DUK_HTHREAD_STRING_HAS(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_HAS) -#define DUK_STRIDX_OWN_KEYS 75 /* 'ownKeys' */ -#define DUK_HEAP_STRING_OWN_KEYS(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_OWN_KEYS) -#define DUK_HTHREAD_STRING_OWN_KEYS(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_OWN_KEYS) -#define DUK_STRIDX_WELLKNOWN_SYMBOL_TO_PRIMITIVE 76 /* '\x81Symbol.toPrimitive\xff' */ -#define DUK_HEAP_STRING_WELLKNOWN_SYMBOL_TO_PRIMITIVE(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_WELLKNOWN_SYMBOL_TO_PRIMITIVE) -#define DUK_HTHREAD_STRING_WELLKNOWN_SYMBOL_TO_PRIMITIVE(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_WELLKNOWN_SYMBOL_TO_PRIMITIVE) -#define DUK_STRIDX_WELLKNOWN_SYMBOL_HAS_INSTANCE 77 /* '\x81Symbol.hasInstance\xff' */ -#define DUK_HEAP_STRING_WELLKNOWN_SYMBOL_HAS_INSTANCE(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_WELLKNOWN_SYMBOL_HAS_INSTANCE) -#define DUK_HTHREAD_STRING_WELLKNOWN_SYMBOL_HAS_INSTANCE(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_WELLKNOWN_SYMBOL_HAS_INSTANCE) -#define DUK_STRIDX_WELLKNOWN_SYMBOL_TO_STRING_TAG 78 /* '\x81Symbol.toStringTag\xff' */ -#define DUK_HEAP_STRING_WELLKNOWN_SYMBOL_TO_STRING_TAG(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_WELLKNOWN_SYMBOL_TO_STRING_TAG) -#define DUK_HTHREAD_STRING_WELLKNOWN_SYMBOL_TO_STRING_TAG(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_WELLKNOWN_SYMBOL_TO_STRING_TAG) -#define DUK_STRIDX_WELLKNOWN_SYMBOL_IS_CONCAT_SPREADABLE 79 /* '\x81Symbol.isConcatSpreadable\xff' */ -#define DUK_HEAP_STRING_WELLKNOWN_SYMBOL_IS_CONCAT_SPREADABLE(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_WELLKNOWN_SYMBOL_IS_CONCAT_SPREADABLE) -#define DUK_HTHREAD_STRING_WELLKNOWN_SYMBOL_IS_CONCAT_SPREADABLE(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_WELLKNOWN_SYMBOL_IS_CONCAT_SPREADABLE) -#define DUK_STRIDX_SET_PROTOTYPE_OF 80 /* 'setPrototypeOf' */ -#define DUK_HEAP_STRING_SET_PROTOTYPE_OF(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_SET_PROTOTYPE_OF) -#define DUK_HTHREAD_STRING_SET_PROTOTYPE_OF(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_SET_PROTOTYPE_OF) -#define DUK_STRIDX___PROTO__ 81 /* '__proto__' */ -#define DUK_HEAP_STRING___PROTO__(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX___PROTO__) -#define DUK_HTHREAD_STRING___PROTO__(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX___PROTO__) -#define DUK_STRIDX_TO_STRING 82 /* 'toString' */ -#define DUK_HEAP_STRING_TO_STRING(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_TO_STRING) -#define DUK_HTHREAD_STRING_TO_STRING(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_TO_STRING) -#define DUK_STRIDX_TO_JSON 83 /* 'toJSON' */ -#define DUK_HEAP_STRING_TO_JSON(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_TO_JSON) -#define DUK_HTHREAD_STRING_TO_JSON(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_TO_JSON) -#define DUK_STRIDX_TYPE 84 /* 'type' */ -#define DUK_HEAP_STRING_TYPE(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_TYPE) -#define DUK_HTHREAD_STRING_TYPE(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_TYPE) -#define DUK_STRIDX_DATA 85 /* 'data' */ -#define DUK_HEAP_STRING_DATA(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_DATA) -#define DUK_HTHREAD_STRING_DATA(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_DATA) -#define DUK_STRIDX_LC_BUFFER 86 /* 'buffer' */ -#define DUK_HEAP_STRING_LC_BUFFER(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_LC_BUFFER) -#define DUK_HTHREAD_STRING_LC_BUFFER(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_LC_BUFFER) -#define DUK_STRIDX_LENGTH 87 /* 'length' */ -#define DUK_HEAP_STRING_LENGTH(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_LENGTH) -#define DUK_HTHREAD_STRING_LENGTH(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_LENGTH) -#define DUK_STRIDX_SET 88 /* 'set' */ -#define DUK_HEAP_STRING_SET(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_SET) -#define DUK_HTHREAD_STRING_SET(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_SET) -#define DUK_STRIDX_STACK 89 /* 'stack' */ -#define DUK_HEAP_STRING_STACK(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_STACK) -#define DUK_HTHREAD_STRING_STACK(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_STACK) -#define DUK_STRIDX_PC 90 /* 'pc' */ -#define DUK_HEAP_STRING_PC(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_PC) -#define DUK_HTHREAD_STRING_PC(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_PC) -#define DUK_STRIDX_LINE_NUMBER 91 /* 'lineNumber' */ -#define DUK_HEAP_STRING_LINE_NUMBER(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_LINE_NUMBER) -#define DUK_HTHREAD_STRING_LINE_NUMBER(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_LINE_NUMBER) -#define DUK_STRIDX_INT_TRACEDATA 92 /* '\x82Tracedata' */ -#define DUK_HEAP_STRING_INT_TRACEDATA(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_INT_TRACEDATA) -#define DUK_HTHREAD_STRING_INT_TRACEDATA(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_INT_TRACEDATA) -#define DUK_STRIDX_NAME 93 /* 'name' */ -#define DUK_HEAP_STRING_NAME(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_NAME) -#define DUK_HTHREAD_STRING_NAME(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_NAME) -#define DUK_STRIDX_FILE_NAME 94 /* 'fileName' */ -#define DUK_HEAP_STRING_FILE_NAME(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_FILE_NAME) -#define DUK_HTHREAD_STRING_FILE_NAME(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_FILE_NAME) -#define DUK_STRIDX_LC_POINTER 95 /* 'pointer' */ -#define DUK_HEAP_STRING_LC_POINTER(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_LC_POINTER) -#define DUK_HTHREAD_STRING_LC_POINTER(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_LC_POINTER) -#define DUK_STRIDX_INT_TARGET 96 /* '\x82Target' */ -#define DUK_HEAP_STRING_INT_TARGET(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_INT_TARGET) -#define DUK_HTHREAD_STRING_INT_TARGET(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_INT_TARGET) -#define DUK_STRIDX_INT_NEXT 97 /* '\x82Next' */ -#define DUK_HEAP_STRING_INT_NEXT(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_INT_NEXT) -#define DUK_HTHREAD_STRING_INT_NEXT(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_INT_NEXT) -#define DUK_STRIDX_INT_BYTECODE 98 /* '\x82Bytecode' */ -#define DUK_HEAP_STRING_INT_BYTECODE(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_INT_BYTECODE) -#define DUK_HTHREAD_STRING_INT_BYTECODE(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_INT_BYTECODE) -#define DUK_STRIDX_INT_FORMALS 99 /* '\x82Formals' */ -#define DUK_HEAP_STRING_INT_FORMALS(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_INT_FORMALS) -#define DUK_HTHREAD_STRING_INT_FORMALS(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_INT_FORMALS) -#define DUK_STRIDX_INT_VARMAP 100 /* '\x82Varmap' */ -#define DUK_HEAP_STRING_INT_VARMAP(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_INT_VARMAP) -#define DUK_HTHREAD_STRING_INT_VARMAP(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_INT_VARMAP) -#define DUK_STRIDX_INT_SOURCE 101 /* '\x82Source' */ -#define DUK_HEAP_STRING_INT_SOURCE(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_INT_SOURCE) -#define DUK_HTHREAD_STRING_INT_SOURCE(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_INT_SOURCE) -#define DUK_STRIDX_INT_PC2LINE 102 /* '\x82Pc2line' */ -#define DUK_HEAP_STRING_INT_PC2LINE(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_INT_PC2LINE) -#define DUK_HTHREAD_STRING_INT_PC2LINE(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_INT_PC2LINE) -#define DUK_STRIDX_INT_MAP 103 /* '\x82Map' */ -#define DUK_HEAP_STRING_INT_MAP(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_INT_MAP) -#define DUK_HTHREAD_STRING_INT_MAP(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_INT_MAP) -#define DUK_STRIDX_INT_VARENV 104 /* '\x82Varenv' */ -#define DUK_HEAP_STRING_INT_VARENV(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_INT_VARENV) -#define DUK_HTHREAD_STRING_INT_VARENV(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_INT_VARENV) -#define DUK_STRIDX_INT_FINALIZER 105 /* '\x82Finalizer' */ -#define DUK_HEAP_STRING_INT_FINALIZER(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_INT_FINALIZER) -#define DUK_HTHREAD_STRING_INT_FINALIZER(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_INT_FINALIZER) -#define DUK_STRIDX_INT_VALUE 106 /* '\x82Value' */ -#define DUK_HEAP_STRING_INT_VALUE(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_INT_VALUE) -#define DUK_HTHREAD_STRING_INT_VALUE(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_INT_VALUE) -#define DUK_STRIDX_COMPILE 107 /* 'compile' */ -#define DUK_HEAP_STRING_COMPILE(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_COMPILE) -#define DUK_HTHREAD_STRING_COMPILE(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_COMPILE) -#define DUK_STRIDX_INPUT 108 /* 'input' */ -#define DUK_HEAP_STRING_INPUT(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_INPUT) -#define DUK_HTHREAD_STRING_INPUT(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_INPUT) -#define DUK_STRIDX_ERR_CREATE 109 /* 'errCreate' */ -#define DUK_HEAP_STRING_ERR_CREATE(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_ERR_CREATE) -#define DUK_HTHREAD_STRING_ERR_CREATE(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_ERR_CREATE) -#define DUK_STRIDX_ERR_THROW 110 /* 'errThrow' */ -#define DUK_HEAP_STRING_ERR_THROW(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_ERR_THROW) -#define DUK_HTHREAD_STRING_ERR_THROW(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_ERR_THROW) -#define DUK_STRIDX_ENV 111 /* 'env' */ -#define DUK_HEAP_STRING_ENV(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_ENV) -#define DUK_HTHREAD_STRING_ENV(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_ENV) -#define DUK_STRIDX_HEX 112 /* 'hex' */ -#define DUK_HEAP_STRING_HEX(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_HEX) -#define DUK_HTHREAD_STRING_HEX(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_HEX) -#define DUK_STRIDX_BASE64 113 /* 'base64' */ -#define DUK_HEAP_STRING_BASE64(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_BASE64) -#define DUK_HTHREAD_STRING_BASE64(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_BASE64) -#define DUK_STRIDX_JX 114 /* 'jx' */ -#define DUK_HEAP_STRING_JX(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_JX) -#define DUK_HTHREAD_STRING_JX(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_JX) -#define DUK_STRIDX_JC 115 /* 'jc' */ -#define DUK_HEAP_STRING_JC(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_JC) -#define DUK_HTHREAD_STRING_JC(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_JC) -#define DUK_STRIDX_JSON_EXT_UNDEFINED 116 /* '{"_undef":true}' */ -#define DUK_HEAP_STRING_JSON_EXT_UNDEFINED(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_JSON_EXT_UNDEFINED) -#define DUK_HTHREAD_STRING_JSON_EXT_UNDEFINED(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_JSON_EXT_UNDEFINED) -#define DUK_STRIDX_JSON_EXT_NAN 117 /* '{"_nan":true}' */ -#define DUK_HEAP_STRING_JSON_EXT_NAN(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_JSON_EXT_NAN) -#define DUK_HTHREAD_STRING_JSON_EXT_NAN(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_JSON_EXT_NAN) -#define DUK_STRIDX_JSON_EXT_POSINF 118 /* '{"_inf":true}' */ -#define DUK_HEAP_STRING_JSON_EXT_POSINF(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_JSON_EXT_POSINF) -#define DUK_HTHREAD_STRING_JSON_EXT_POSINF(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_JSON_EXT_POSINF) -#define DUK_STRIDX_JSON_EXT_NEGINF 119 /* '{"_ninf":true}' */ -#define DUK_HEAP_STRING_JSON_EXT_NEGINF(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_JSON_EXT_NEGINF) -#define DUK_HTHREAD_STRING_JSON_EXT_NEGINF(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_JSON_EXT_NEGINF) -#define DUK_STRIDX_JSON_EXT_FUNCTION1 120 /* '{"_func":true}' */ -#define DUK_HEAP_STRING_JSON_EXT_FUNCTION1(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_JSON_EXT_FUNCTION1) -#define DUK_HTHREAD_STRING_JSON_EXT_FUNCTION1(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_JSON_EXT_FUNCTION1) -#define DUK_STRIDX_JSON_EXT_FUNCTION2 121 /* '{_func:true}' */ -#define DUK_HEAP_STRING_JSON_EXT_FUNCTION2(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_JSON_EXT_FUNCTION2) -#define DUK_HTHREAD_STRING_JSON_EXT_FUNCTION2(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_JSON_EXT_FUNCTION2) -#define DUK_STRIDX_BREAK 122 /* 'break' */ -#define DUK_HEAP_STRING_BREAK(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_BREAK) -#define DUK_HTHREAD_STRING_BREAK(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_BREAK) -#define DUK_STRIDX_CASE 123 /* 'case' */ -#define DUK_HEAP_STRING_CASE(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_CASE) -#define DUK_HTHREAD_STRING_CASE(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_CASE) -#define DUK_STRIDX_CATCH 124 /* 'catch' */ -#define DUK_HEAP_STRING_CATCH(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_CATCH) -#define DUK_HTHREAD_STRING_CATCH(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_CATCH) -#define DUK_STRIDX_CONTINUE 125 /* 'continue' */ -#define DUK_HEAP_STRING_CONTINUE(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_CONTINUE) -#define DUK_HTHREAD_STRING_CONTINUE(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_CONTINUE) -#define DUK_STRIDX_DEBUGGER 126 /* 'debugger' */ -#define DUK_HEAP_STRING_DEBUGGER(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_DEBUGGER) -#define DUK_HTHREAD_STRING_DEBUGGER(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_DEBUGGER) -#define DUK_STRIDX_DEFAULT 127 /* 'default' */ -#define DUK_HEAP_STRING_DEFAULT(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_DEFAULT) -#define DUK_HTHREAD_STRING_DEFAULT(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_DEFAULT) -#define DUK_STRIDX_DELETE 128 /* 'delete' */ -#define DUK_HEAP_STRING_DELETE(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_DELETE) -#define DUK_HTHREAD_STRING_DELETE(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_DELETE) -#define DUK_STRIDX_DO 129 /* 'do' */ -#define DUK_HEAP_STRING_DO(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_DO) -#define DUK_HTHREAD_STRING_DO(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_DO) -#define DUK_STRIDX_ELSE 130 /* 'else' */ -#define DUK_HEAP_STRING_ELSE(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_ELSE) -#define DUK_HTHREAD_STRING_ELSE(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_ELSE) -#define DUK_STRIDX_FINALLY 131 /* 'finally' */ -#define DUK_HEAP_STRING_FINALLY(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_FINALLY) -#define DUK_HTHREAD_STRING_FINALLY(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_FINALLY) -#define DUK_STRIDX_FOR 132 /* 'for' */ -#define DUK_HEAP_STRING_FOR(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_FOR) -#define DUK_HTHREAD_STRING_FOR(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_FOR) -#define DUK_STRIDX_LC_FUNCTION 133 /* 'function' */ -#define DUK_HEAP_STRING_LC_FUNCTION(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_LC_FUNCTION) -#define DUK_HTHREAD_STRING_LC_FUNCTION(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_LC_FUNCTION) -#define DUK_STRIDX_IF 134 /* 'if' */ -#define DUK_HEAP_STRING_IF(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_IF) -#define DUK_HTHREAD_STRING_IF(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_IF) -#define DUK_STRIDX_IN 135 /* 'in' */ -#define DUK_HEAP_STRING_IN(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_IN) -#define DUK_HTHREAD_STRING_IN(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_IN) -#define DUK_STRIDX_INSTANCEOF 136 /* 'instanceof' */ -#define DUK_HEAP_STRING_INSTANCEOF(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_INSTANCEOF) -#define DUK_HTHREAD_STRING_INSTANCEOF(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_INSTANCEOF) -#define DUK_STRIDX_NEW 137 /* 'new' */ -#define DUK_HEAP_STRING_NEW(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_NEW) -#define DUK_HTHREAD_STRING_NEW(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_NEW) -#define DUK_STRIDX_RETURN 138 /* 'return' */ -#define DUK_HEAP_STRING_RETURN(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_RETURN) -#define DUK_HTHREAD_STRING_RETURN(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_RETURN) -#define DUK_STRIDX_SWITCH 139 /* 'switch' */ -#define DUK_HEAP_STRING_SWITCH(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_SWITCH) -#define DUK_HTHREAD_STRING_SWITCH(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_SWITCH) -#define DUK_STRIDX_THIS 140 /* 'this' */ -#define DUK_HEAP_STRING_THIS(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_THIS) -#define DUK_HTHREAD_STRING_THIS(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_THIS) -#define DUK_STRIDX_THROW 141 /* 'throw' */ -#define DUK_HEAP_STRING_THROW(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_THROW) -#define DUK_HTHREAD_STRING_THROW(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_THROW) -#define DUK_STRIDX_TRY 142 /* 'try' */ -#define DUK_HEAP_STRING_TRY(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_TRY) -#define DUK_HTHREAD_STRING_TRY(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_TRY) -#define DUK_STRIDX_TYPEOF 143 /* 'typeof' */ -#define DUK_HEAP_STRING_TYPEOF(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_TYPEOF) -#define DUK_HTHREAD_STRING_TYPEOF(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_TYPEOF) -#define DUK_STRIDX_VAR 144 /* 'var' */ -#define DUK_HEAP_STRING_VAR(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_VAR) -#define DUK_HTHREAD_STRING_VAR(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_VAR) -#define DUK_STRIDX_CONST 145 /* 'const' */ -#define DUK_HEAP_STRING_CONST(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_CONST) -#define DUK_HTHREAD_STRING_CONST(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_CONST) -#define DUK_STRIDX_VOID 146 /* 'void' */ -#define DUK_HEAP_STRING_VOID(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_VOID) -#define DUK_HTHREAD_STRING_VOID(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_VOID) -#define DUK_STRIDX_WHILE 147 /* 'while' */ -#define DUK_HEAP_STRING_WHILE(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_WHILE) -#define DUK_HTHREAD_STRING_WHILE(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_WHILE) -#define DUK_STRIDX_WITH 148 /* 'with' */ -#define DUK_HEAP_STRING_WITH(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_WITH) -#define DUK_HTHREAD_STRING_WITH(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_WITH) -#define DUK_STRIDX_CLASS 149 /* 'class' */ -#define DUK_HEAP_STRING_CLASS(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_CLASS) -#define DUK_HTHREAD_STRING_CLASS(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_CLASS) -#define DUK_STRIDX_ENUM 150 /* 'enum' */ -#define DUK_HEAP_STRING_ENUM(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_ENUM) -#define DUK_HTHREAD_STRING_ENUM(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_ENUM) -#define DUK_STRIDX_EXPORT 151 /* 'export' */ -#define DUK_HEAP_STRING_EXPORT(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_EXPORT) -#define DUK_HTHREAD_STRING_EXPORT(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_EXPORT) -#define DUK_STRIDX_EXTENDS 152 /* 'extends' */ -#define DUK_HEAP_STRING_EXTENDS(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_EXTENDS) -#define DUK_HTHREAD_STRING_EXTENDS(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_EXTENDS) -#define DUK_STRIDX_IMPORT 153 /* 'import' */ -#define DUK_HEAP_STRING_IMPORT(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_IMPORT) -#define DUK_HTHREAD_STRING_IMPORT(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_IMPORT) -#define DUK_STRIDX_SUPER 154 /* 'super' */ -#define DUK_HEAP_STRING_SUPER(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_SUPER) -#define DUK_HTHREAD_STRING_SUPER(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_SUPER) -#define DUK_STRIDX_LC_NULL 155 /* 'null' */ -#define DUK_HEAP_STRING_LC_NULL(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_LC_NULL) -#define DUK_HTHREAD_STRING_LC_NULL(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_LC_NULL) -#define DUK_STRIDX_TRUE 156 /* 'true' */ -#define DUK_HEAP_STRING_TRUE(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_TRUE) -#define DUK_HTHREAD_STRING_TRUE(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_TRUE) -#define DUK_STRIDX_FALSE 157 /* 'false' */ -#define DUK_HEAP_STRING_FALSE(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_FALSE) -#define DUK_HTHREAD_STRING_FALSE(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_FALSE) -#define DUK_STRIDX_IMPLEMENTS 158 /* 'implements' */ -#define DUK_HEAP_STRING_IMPLEMENTS(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_IMPLEMENTS) -#define DUK_HTHREAD_STRING_IMPLEMENTS(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_IMPLEMENTS) -#define DUK_STRIDX_INTERFACE 159 /* 'interface' */ -#define DUK_HEAP_STRING_INTERFACE(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_INTERFACE) -#define DUK_HTHREAD_STRING_INTERFACE(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_INTERFACE) -#define DUK_STRIDX_LET 160 /* 'let' */ -#define DUK_HEAP_STRING_LET(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_LET) -#define DUK_HTHREAD_STRING_LET(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_LET) -#define DUK_STRIDX_PACKAGE 161 /* 'package' */ -#define DUK_HEAP_STRING_PACKAGE(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_PACKAGE) -#define DUK_HTHREAD_STRING_PACKAGE(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_PACKAGE) -#define DUK_STRIDX_PRIVATE 162 /* 'private' */ -#define DUK_HEAP_STRING_PRIVATE(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_PRIVATE) -#define DUK_HTHREAD_STRING_PRIVATE(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_PRIVATE) -#define DUK_STRIDX_PROTECTED 163 /* 'protected' */ -#define DUK_HEAP_STRING_PROTECTED(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_PROTECTED) -#define DUK_HTHREAD_STRING_PROTECTED(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_PROTECTED) -#define DUK_STRIDX_PUBLIC 164 /* 'public' */ -#define DUK_HEAP_STRING_PUBLIC(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_PUBLIC) -#define DUK_HTHREAD_STRING_PUBLIC(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_PUBLIC) -#define DUK_STRIDX_STATIC 165 /* 'static' */ -#define DUK_HEAP_STRING_STATIC(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_STATIC) -#define DUK_HTHREAD_STRING_STATIC(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_STATIC) -#define DUK_STRIDX_YIELD 166 /* 'yield' */ -#define DUK_HEAP_STRING_YIELD(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_YIELD) -#define DUK_HTHREAD_STRING_YIELD(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_YIELD) - -#define DUK_HEAP_NUM_STRINGS 167 -#define DUK_STRIDX_START_RESERVED 122 -#define DUK_STRIDX_START_STRICT_RESERVED 158 -#define DUK_STRIDX_END_RESERVED 167 /* exclusive endpoint */ - -/* To convert a heap stridx to a token number, subtract - * DUK_STRIDX_START_RESERVED and add DUK_TOK_START_RESERVED. - */ -#if !defined(DUK_SINGLE_FILE) -DUK_INTERNAL_DECL const duk_uint8_t duk_strings_data[972]; -#endif /* !DUK_SINGLE_FILE */ -#define DUK_STRDATA_MAX_STRLEN 27 -#define DUK_STRDATA_DATA_LENGTH 972 -#endif /* DUK_USE_ROM_STRINGS */ - -#if defined(DUK_USE_ROM_OBJECTS) -#error RAM support not enabled, rerun configure.py with --ram-support -#else /* DUK_USE_ROM_OBJECTS */ -DUK_INTERNAL_DECL duk_ret_t duk_bi_object_constructor(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_function_constructor(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_function_prototype(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_array_constructor(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_string_constructor(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_boolean_constructor(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_number_constructor(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_date_constructor(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_regexp_constructor(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_error_constructor_shared(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_type_error_thrower(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_global_object_parse_int(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_global_object_parse_float(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_thread_constructor(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_pointer_constructor(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_proxy_constructor(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_symbol_constructor_shared(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_arraybuffer_constructor(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_dataview_constructor(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_typedarray_constructor(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_nodejs_buffer_constructor(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_textencoder_constructor(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_textdecoder_constructor(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_global_object_eval(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_global_object_is_nan(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_global_object_is_finite(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_global_object_decode_uri(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_global_object_decode_uri_component(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_global_object_encode_uri(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_global_object_encode_uri_component(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_global_object_escape(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_global_object_unescape(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_object_getprototype_shared(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_object_setprototype_shared(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_object_constructor_get_own_property_descriptor(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_object_constructor_keys_shared(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_object_constructor_assign(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_object_constructor_create(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_object_constructor_define_property(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_object_constructor_define_properties(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_object_constructor_seal_freeze_shared(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_object_constructor_prevent_extensions(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_object_constructor_is_sealed_frozen_shared(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_object_constructor_is_extensible(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_object_constructor_is(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_object_prototype_to_string(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_object_prototype_to_locale_string(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_object_prototype_value_of(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_object_prototype_has_own_property(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_object_prototype_is_prototype_of(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_object_prototype_property_is_enumerable(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_object_prototype_defineaccessor(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_object_prototype_lookupaccessor(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_function_prototype_to_string(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_function_prototype_apply(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_function_prototype_call(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_function_prototype_bind(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_function_prototype_hasinstance(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_native_function_length(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_native_function_name(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_array_constructor_is_array(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_array_prototype_to_string(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_array_prototype_join_shared(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_array_prototype_concat(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_array_prototype_pop(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_array_prototype_push(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_array_prototype_reverse(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_array_prototype_shift(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_array_prototype_slice(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_array_prototype_sort(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_array_prototype_splice(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_array_prototype_unshift(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_array_prototype_indexof_shared(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_array_prototype_iter_shared(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_array_prototype_reduce_shared(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_string_constructor_from_char_code(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_string_constructor_from_code_point(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_string_prototype_to_string(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_string_prototype_char_at(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_string_prototype_char_code_at(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_string_prototype_concat(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_string_prototype_indexof_shared(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_string_prototype_locale_compare(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_string_prototype_match(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_string_prototype_replace(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_string_prototype_search(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_string_prototype_slice(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_string_prototype_split(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_string_prototype_substring(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_string_prototype_caseconv_shared(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_string_prototype_trim(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_string_prototype_repeat(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_string_prototype_startswith_endswith(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_string_prototype_includes(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_string_prototype_substr(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_boolean_prototype_tostring_shared(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_number_check_shared(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_number_prototype_to_string(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_number_prototype_to_locale_string(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_number_prototype_value_of(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_number_prototype_to_fixed(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_number_prototype_to_exponential(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_number_prototype_to_precision(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_date_constructor_parse(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_date_constructor_utc(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_date_constructor_now(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_date_prototype_tostring_shared(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_date_prototype_to_json(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_date_prototype_value_of(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_date_prototype_get_shared(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_date_prototype_get_timezone_offset(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_date_prototype_set_time(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_date_prototype_set_shared(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_date_prototype_toprimitive(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_regexp_prototype_exec(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_regexp_prototype_test(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_regexp_prototype_tostring(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_regexp_prototype_flags(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_regexp_prototype_shared_getter(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_error_prototype_stack_getter(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_error_prototype_stack_setter(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_error_prototype_filename_getter(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_error_prototype_filename_setter(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_error_prototype_linenumber_getter(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_error_prototype_linenumber_setter(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_error_prototype_to_string(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_math_object_onearg_shared(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_math_object_twoarg_shared(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_math_object_clz32(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_math_object_hypot(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_math_object_imul(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_math_object_max(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_math_object_min(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_math_object_random(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_math_object_sign(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_json_object_parse(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_json_object_stringify(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_duktape_object_info(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_duktape_object_act(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_duktape_object_gc(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_duktape_object_fin(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_duktape_object_enc(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_duktape_object_dec(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_duktape_object_compact(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_thread_yield(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_thread_resume(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_thread_current(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_pointer_prototype_tostring_shared(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_reflect_apply(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_reflect_construct(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_reflect_object_delete_property(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_reflect_object_get(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_reflect_object_has(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_reflect_object_set(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_symbol_key_for(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_symbol_tostring_shared(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_symbol_toprimitive(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_arraybuffer_isview(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_typedarray_bytelength_getter(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_buffer_slice_shared(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_typedarray_byteoffset_getter(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_typedarray_buffer_getter(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_buffer_readfield(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_buffer_writefield(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_typedarray_set(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_uint8array_allocplain(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_uint8array_plainof(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_nodejs_buffer_concat(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_nodejs_buffer_is_encoding(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_nodejs_buffer_is_buffer(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_nodejs_buffer_byte_length(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_buffer_compare_shared(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_nodejs_buffer_tostring(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_nodejs_buffer_tojson(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_nodejs_buffer_fill(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_nodejs_buffer_copy(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_nodejs_buffer_write(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_cbor_encode(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_cbor_decode(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_textencoder_prototype_encoding_getter(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_textencoder_prototype_encode(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_textdecoder_prototype_shared_getter(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_textdecoder_prototype_decode(duk_context *ctx); -DUK_INTERNAL_DECL duk_ret_t duk_bi_performance_now(duk_context *ctx); -#if !defined(DUK_SINGLE_FILE) -DUK_INTERNAL_DECL const duk_c_function duk_bi_native_functions[185]; -#endif /* !DUK_SINGLE_FILE */ -#define DUK_BIDX_GLOBAL 0 -#define DUK_BIDX_GLOBAL_ENV 1 -#define DUK_BIDX_OBJECT_CONSTRUCTOR 2 -#define DUK_BIDX_OBJECT_PROTOTYPE 3 -#define DUK_BIDX_FUNCTION_CONSTRUCTOR 4 -#define DUK_BIDX_FUNCTION_PROTOTYPE 5 -#define DUK_BIDX_NATIVE_FUNCTION_PROTOTYPE 6 -#define DUK_BIDX_ARRAY_CONSTRUCTOR 7 -#define DUK_BIDX_ARRAY_PROTOTYPE 8 -#define DUK_BIDX_STRING_CONSTRUCTOR 9 -#define DUK_BIDX_STRING_PROTOTYPE 10 -#define DUK_BIDX_BOOLEAN_CONSTRUCTOR 11 -#define DUK_BIDX_BOOLEAN_PROTOTYPE 12 -#define DUK_BIDX_NUMBER_CONSTRUCTOR 13 -#define DUK_BIDX_NUMBER_PROTOTYPE 14 -#define DUK_BIDX_DATE_CONSTRUCTOR 15 -#define DUK_BIDX_DATE_PROTOTYPE 16 -#define DUK_BIDX_REGEXP_CONSTRUCTOR 17 -#define DUK_BIDX_REGEXP_PROTOTYPE 18 -#define DUK_BIDX_ERROR_CONSTRUCTOR 19 -#define DUK_BIDX_ERROR_PROTOTYPE 20 -#define DUK_BIDX_EVAL_ERROR_CONSTRUCTOR 21 -#define DUK_BIDX_EVAL_ERROR_PROTOTYPE 22 -#define DUK_BIDX_RANGE_ERROR_CONSTRUCTOR 23 -#define DUK_BIDX_RANGE_ERROR_PROTOTYPE 24 -#define DUK_BIDX_REFERENCE_ERROR_CONSTRUCTOR 25 -#define DUK_BIDX_REFERENCE_ERROR_PROTOTYPE 26 -#define DUK_BIDX_SYNTAX_ERROR_CONSTRUCTOR 27 -#define DUK_BIDX_SYNTAX_ERROR_PROTOTYPE 28 -#define DUK_BIDX_TYPE_ERROR_CONSTRUCTOR 29 -#define DUK_BIDX_TYPE_ERROR_PROTOTYPE 30 -#define DUK_BIDX_URI_ERROR_CONSTRUCTOR 31 -#define DUK_BIDX_URI_ERROR_PROTOTYPE 32 -#define DUK_BIDX_TYPE_ERROR_THROWER 33 -#define DUK_BIDX_DUKTAPE 34 -#define DUK_BIDX_THREAD_PROTOTYPE 35 -#define DUK_BIDX_POINTER_PROTOTYPE 36 -#define DUK_BIDX_DOUBLE_ERROR 37 -#define DUK_BIDX_SYMBOL_PROTOTYPE 38 -#define DUK_BIDX_ARRAYBUFFER_PROTOTYPE 39 -#define DUK_BIDX_DATAVIEW_PROTOTYPE 40 -#define DUK_BIDX_INT8ARRAY_PROTOTYPE 41 -#define DUK_BIDX_UINT8ARRAY_PROTOTYPE 42 -#define DUK_BIDX_UINT8CLAMPEDARRAY_PROTOTYPE 43 -#define DUK_BIDX_INT16ARRAY_PROTOTYPE 44 -#define DUK_BIDX_UINT16ARRAY_PROTOTYPE 45 -#define DUK_BIDX_INT32ARRAY_PROTOTYPE 46 -#define DUK_BIDX_UINT32ARRAY_PROTOTYPE 47 -#define DUK_BIDX_FLOAT32ARRAY_PROTOTYPE 48 -#define DUK_BIDX_FLOAT64ARRAY_PROTOTYPE 49 -#define DUK_BIDX_NODEJS_BUFFER_PROTOTYPE 50 -#define DUK_NUM_BUILTINS 51 -#define DUK_NUM_BIDX_BUILTINS 51 -#define DUK_NUM_ALL_BUILTINS 80 -#if defined(DUK_USE_DOUBLE_LE) -#if !defined(DUK_SINGLE_FILE) -DUK_INTERNAL_DECL const duk_uint8_t duk_builtins_data[4281]; -#endif /* !DUK_SINGLE_FILE */ -#define DUK_BUILTINS_DATA_LENGTH 4281 -#elif defined(DUK_USE_DOUBLE_BE) -#if !defined(DUK_SINGLE_FILE) -DUK_INTERNAL_DECL const duk_uint8_t duk_builtins_data[4281]; -#endif /* !DUK_SINGLE_FILE */ -#define DUK_BUILTINS_DATA_LENGTH 4281 -#elif defined(DUK_USE_DOUBLE_ME) -#if !defined(DUK_SINGLE_FILE) -DUK_INTERNAL_DECL const duk_uint8_t duk_builtins_data[4281]; -#endif /* !DUK_SINGLE_FILE */ -#define DUK_BUILTINS_DATA_LENGTH 4281 -#else -#error invalid endianness defines -#endif -#endif /* DUK_USE_ROM_OBJECTS */ -#endif /* DUK_BUILTINS_H_INCLUDED */ -#line 45 "duk_internal.h" - -/* #include duk_util.h */ -#line 1 "duk_util.h" -/* - * Utilities - */ - -#if !defined(DUK_UTIL_H_INCLUDED) -#define DUK_UTIL_H_INCLUDED - -/* - * Some useful constants - */ - -#define DUK_DOUBLE_2TO32 4294967296.0 -#define DUK_DOUBLE_2TO31 2147483648.0 -#define DUK_DOUBLE_LOG2E 1.4426950408889634 -#define DUK_DOUBLE_LOG10E 0.4342944819032518 - -/* - * Endian conversion - */ - -#if defined(DUK_USE_INTEGER_LE) -#define DUK_HTON32(x) DUK_BSWAP32((x)) -#define DUK_NTOH32(x) DUK_BSWAP32((x)) -#define DUK_HTON16(x) DUK_BSWAP16((x)) -#define DUK_NTOH16(x) DUK_BSWAP16((x)) -#elif defined(DUK_USE_INTEGER_BE) -#define DUK_HTON32(x) (x) -#define DUK_NTOH32(x) (x) -#define DUK_HTON16(x) (x) -#define DUK_NTOH16(x) (x) -#else -#error internal error, endianness defines broken -#endif - -/* - * Bitstream decoder - */ - -struct duk_bitdecoder_ctx { - const duk_uint8_t *data; - duk_size_t offset; - duk_size_t length; - duk_uint32_t currval; - duk_small_int_t currbits; -}; - -#define DUK_BD_BITPACKED_STRING_MAXLEN 256 - -/* - * Bitstream encoder - */ - -struct duk_bitencoder_ctx { - duk_uint8_t *data; - duk_size_t offset; - duk_size_t length; - duk_uint32_t currval; - duk_small_int_t currbits; - duk_small_int_t truncated; -}; - -/* - * Raw write/read macros for big endian, unaligned basic values. - * Caller ensures there's enough space. The INC macro variants - * update the pointer argument automatically. - */ - -#define DUK_RAW_WRITE_U8(ptr, val) \ - do { \ - *(ptr) = (duk_uint8_t) (val); \ - } while (0) -#define DUK_RAW_WRITE_U16_BE(ptr, val) duk_raw_write_u16_be((ptr), (duk_uint16_t) (val)) -#define DUK_RAW_WRITE_U32_BE(ptr, val) duk_raw_write_u32_be((ptr), (duk_uint32_t) (val)) -#define DUK_RAW_WRITE_FLOAT_BE(ptr, val) duk_raw_write_float_be((ptr), (duk_float_t) (val)) -#define DUK_RAW_WRITE_DOUBLE_BE(ptr, val) duk_raw_write_double_be((ptr), (duk_double_t) (val)) -#define DUK_RAW_WRITE_XUTF8(ptr, val) duk_raw_write_xutf8((ptr), (duk_ucodepoint_t) (val)) - -#define DUK_RAW_WRITEINC_U8(ptr, val) \ - do { \ - *(ptr)++ = (duk_uint8_t) (val); \ - } while (0) -#define DUK_RAW_WRITEINC_U16_BE(ptr, val) duk_raw_writeinc_u16_be(&(ptr), (duk_uint16_t) (val)) -#define DUK_RAW_WRITEINC_U32_BE(ptr, val) duk_raw_writeinc_u32_be(&(ptr), (duk_uint32_t) (val)) -#define DUK_RAW_WRITEINC_FLOAT_BE(ptr, val) duk_raw_writeinc_float_be(&(ptr), (duk_float_t) (val)) -#define DUK_RAW_WRITEINC_DOUBLE_BE(ptr, val) duk_raw_writeinc_double_be(&(ptr), (duk_double_t) (val)) -#define DUK_RAW_WRITEINC_XUTF8(ptr, val) duk_raw_writeinc_xutf8(&(ptr), (duk_ucodepoint_t) (val)) -#define DUK_RAW_WRITEINC_CESU8(ptr, val) duk_raw_writeinc_cesu8(&(ptr), (duk_ucodepoint_t) (val)) - -#define DUK_RAW_READ_U8(ptr) ((duk_uint8_t) (*(ptr))) -#define DUK_RAW_READ_U16_BE(ptr) duk_raw_read_u16_be((ptr)); -#define DUK_RAW_READ_U32_BE(ptr) duk_raw_read_u32_be((ptr)); -#define DUK_RAW_READ_DOUBLE_BE(ptr) duk_raw_read_double_be((ptr)); - -#define DUK_RAW_READINC_U8(ptr) ((duk_uint8_t) (*(ptr)++)) -#define DUK_RAW_READINC_U16_BE(ptr) duk_raw_readinc_u16_be(&(ptr)); -#define DUK_RAW_READINC_U32_BE(ptr) duk_raw_readinc_u32_be(&(ptr)); -#define DUK_RAW_READINC_DOUBLE_BE(ptr) duk_raw_readinc_double_be(&(ptr)); - -/* - * Double and float byte order operations. - */ - -DUK_INTERNAL_DECL void duk_dblunion_host_to_little(duk_double_union *u); -DUK_INTERNAL_DECL void duk_dblunion_little_to_host(duk_double_union *u); -DUK_INTERNAL_DECL void duk_dblunion_host_to_big(duk_double_union *u); -DUK_INTERNAL_DECL void duk_dblunion_big_to_host(duk_double_union *u); -DUK_INTERNAL_DECL void duk_fltunion_host_to_big(duk_float_union *u); -DUK_INTERNAL_DECL void duk_fltunion_big_to_host(duk_float_union *u); - -/* - * Buffer writer (dynamic buffer only) - * - * Helper for writing to a dynamic buffer with a concept of a "slack" area - * to reduce resizes. You can ensure there is enough space beforehand and - * then write for a while without further checks, relying on a stable data - * pointer. Slack handling is automatic so call sites only indicate how - * much data they need right now. - * - * There are several ways to write using bufwriter. The best approach - * depends mainly on how much performance matters over code footprint. - * The key issues are (1) ensuring there is space and (2) keeping the - * pointers consistent. Fast code should ensure space for multiple writes - * with one ensure call. Fastest inner loop code can temporarily borrow - * the 'p' pointer but must write it back eventually. - * - * Be careful to ensure all macro arguments (other than static pointers like - * 'thr' and 'bw_ctx') are evaluated exactly once, using temporaries if - * necessary (if that's not possible, there should be a note near the macro). - * Buffer write arguments often contain arithmetic etc so this is - * particularly important here. - */ - -/* XXX: Migrate bufwriter and other read/write helpers to its own header? */ - -struct duk_bufwriter_ctx { - duk_uint8_t *p; - duk_uint8_t *p_base; - duk_uint8_t *p_limit; - duk_hbuffer_dynamic *buf; -}; - -#if defined(DUK_USE_PREFER_SIZE) -#define DUK_BW_SLACK_ADD 64 -#define DUK_BW_SLACK_SHIFT 4 /* 2^4 -> 1/16 = 6.25% slack */ -#else -#define DUK_BW_SLACK_ADD 64 -#define DUK_BW_SLACK_SHIFT 2 /* 2^2 -> 1/4 = 25% slack */ -#endif - -/* Initialization and finalization (compaction), converting to other types. */ - -#define DUK_BW_INIT_PUSHBUF(thr, bw_ctx, sz) \ - do { \ - duk_bw_init_pushbuf((thr), (bw_ctx), (sz)); \ - } while (0) -#define DUK_BW_INIT_WITHBUF(thr, bw_ctx, buf) \ - do { \ - duk_bw_init((thr), (bw_ctx), (buf)); \ - } while (0) -#define DUK_BW_COMPACT(thr, bw_ctx) \ - do { \ - /* Make underlying buffer compact to match DUK_BW_GET_SIZE(). */ \ - duk_bw_compact((thr), (bw_ctx)); \ - } while (0) -#define DUK_BW_PUSH_AS_STRING(thr, bw_ctx) \ - do { \ - duk_push_lstring((thr), (const char *) (bw_ctx)->p_base, (duk_size_t) ((bw_ctx)->p - (bw_ctx)->p_base)); \ - } while (0) - -/* Pointers may be NULL for a while when 'buf' size is zero and before any - * ENSURE calls have been made. Once an ENSURE has been made, the pointers - * are required to be non-NULL so that it's always valid to use memcpy() and - * memmove(), even for zero size. - */ -#if defined(DUK_USE_ASSERTIONS) -DUK_INTERNAL_DECL void duk_bw_assert_valid(duk_hthread *thr, duk_bufwriter_ctx *bw_ctx); -#define DUK_BW_ASSERT_VALID_EXPR(thr, bw_ctx) (duk_bw_assert_valid((thr), (bw_ctx))) -#define DUK_BW_ASSERT_VALID(thr, bw_ctx) \ - do { \ - duk_bw_assert_valid((thr), (bw_ctx)); \ - } while (0) -#else -#define DUK_BW_ASSERT_VALID_EXPR(thr, bw_ctx) DUK_ASSERT_EXPR(1) -#define DUK_BW_ASSERT_VALID(thr, bw_ctx) \ - do { \ - } while (0) -#endif - -/* Working with the pointer and current size. */ - -#define DUK_BW_GET_PTR(thr, bw_ctx) ((bw_ctx)->p) -#define DUK_BW_SET_PTR(thr, bw_ctx, ptr) \ - do { \ - (bw_ctx)->p = (ptr); \ - } while (0) -#define DUK_BW_ADD_PTR(thr, bw_ctx, delta) \ - do { \ - (bw_ctx)->p += (delta); \ - } while (0) -#define DUK_BW_GET_BASEPTR(thr, bw_ctx) ((bw_ctx)->p_base) -#define DUK_BW_GET_LIMITPTR(thr, bw_ctx) ((bw_ctx)->p_limit) -#define DUK_BW_GET_SIZE(thr, bw_ctx) ((duk_size_t) ((bw_ctx)->p - (bw_ctx)->p_base)) -#define DUK_BW_SET_SIZE(thr, bw_ctx, sz) \ - do { \ - DUK_ASSERT((duk_size_t) (sz) <= (duk_size_t) ((bw_ctx)->p - (bw_ctx)->p_base)); \ - (bw_ctx)->p = (bw_ctx)->p_base + (sz); \ - } while (0) -#define DUK_BW_RESET_SIZE(thr, bw_ctx) \ - do { \ - /* Reset to zero size, keep current limit. */ \ - (bw_ctx)->p = (bw_ctx)->p_base; \ - } while (0) -#define DUK_BW_GET_BUFFER(thr, bw_ctx) ((bw_ctx)->buf) - -/* Ensuring (reserving) space. */ - -#define DUK_BW_ENSURE(thr, bw_ctx, sz) \ - do { \ - duk_size_t duk__sz, duk__space; \ - DUK_BW_ASSERT_VALID((thr), (bw_ctx)); \ - duk__sz = (sz); \ - duk__space = (duk_size_t) ((bw_ctx)->p_limit - (bw_ctx)->p); \ - if (duk__space < duk__sz) { \ - (void) duk_bw_resize((thr), (bw_ctx), duk__sz); \ - } \ - } while (0) -/* NOTE: Multiple evaluation of 'ptr' in this macro. */ -/* XXX: Rework to use an always-inline function? */ -#define DUK_BW_ENSURE_RAW(thr, bw_ctx, sz, ptr) \ - (((duk_size_t) ((bw_ctx)->p_limit - (ptr)) >= (sz)) ? (ptr) : ((bw_ctx)->p = (ptr), duk_bw_resize((thr), (bw_ctx), (sz)))) -#define DUK_BW_ENSURE_GETPTR(thr, bw_ctx, sz) DUK_BW_ENSURE_RAW((thr), (bw_ctx), (sz), (bw_ctx)->p) -#define DUK_BW_ASSERT_SPACE_EXPR(thr, bw_ctx, sz) \ - (DUK_BW_ASSERT_VALID_EXPR((thr), (bw_ctx)), \ - DUK_ASSERT_EXPR((duk_size_t) ((bw_ctx)->p_limit - (bw_ctx)->p) >= (duk_size_t) (sz))) -#define DUK_BW_ASSERT_SPACE(thr, bw_ctx, sz) \ - do { \ - DUK_BW_ASSERT_SPACE_EXPR((thr), (bw_ctx), (sz)); \ - } while (0) - -/* Miscellaneous. */ - -#define DUK_BW_SETPTR_AND_COMPACT(thr, bw_ctx, ptr) \ - do { \ - (bw_ctx)->p = (ptr); \ - duk_bw_compact((thr), (bw_ctx)); \ - } while (0) - -/* Fast write calls which assume you control the slack beforehand. - * Multibyte write variants exist and use a temporary write pointer - * because byte writes alias with anything: with a stored pointer - * explicit pointer load/stores get generated (e.g. gcc -Os). - */ - -#define DUK_BW_WRITE_RAW_U8(thr, bw_ctx, val) \ - do { \ - DUK_BW_ASSERT_SPACE((thr), (bw_ctx), 1); \ - *(bw_ctx)->p++ = (duk_uint8_t) (val); \ - } while (0) -#define DUK_BW_WRITE_RAW_U8_2(thr, bw_ctx, val1, val2) \ - do { \ - duk_uint8_t *duk__p; \ - DUK_BW_ASSERT_SPACE((thr), (bw_ctx), 2); \ - duk__p = (bw_ctx)->p; \ - *duk__p++ = (duk_uint8_t) (val1); \ - *duk__p++ = (duk_uint8_t) (val2); \ - (bw_ctx)->p = duk__p; \ - } while (0) -#define DUK_BW_WRITE_RAW_U8_3(thr, bw_ctx, val1, val2, val3) \ - do { \ - duk_uint8_t *duk__p; \ - DUK_BW_ASSERT_SPACE((thr), (bw_ctx), 3); \ - duk__p = (bw_ctx)->p; \ - *duk__p++ = (duk_uint8_t) (val1); \ - *duk__p++ = (duk_uint8_t) (val2); \ - *duk__p++ = (duk_uint8_t) (val3); \ - (bw_ctx)->p = duk__p; \ - } while (0) -#define DUK_BW_WRITE_RAW_U8_4(thr, bw_ctx, val1, val2, val3, val4) \ - do { \ - duk_uint8_t *duk__p; \ - DUK_BW_ASSERT_SPACE((thr), (bw_ctx), 4); \ - duk__p = (bw_ctx)->p; \ - *duk__p++ = (duk_uint8_t) (val1); \ - *duk__p++ = (duk_uint8_t) (val2); \ - *duk__p++ = (duk_uint8_t) (val3); \ - *duk__p++ = (duk_uint8_t) (val4); \ - (bw_ctx)->p = duk__p; \ - } while (0) -#define DUK_BW_WRITE_RAW_U8_5(thr, bw_ctx, val1, val2, val3, val4, val5) \ - do { \ - duk_uint8_t *duk__p; \ - DUK_BW_ASSERT_SPACE((thr), (bw_ctx), 5); \ - duk__p = (bw_ctx)->p; \ - *duk__p++ = (duk_uint8_t) (val1); \ - *duk__p++ = (duk_uint8_t) (val2); \ - *duk__p++ = (duk_uint8_t) (val3); \ - *duk__p++ = (duk_uint8_t) (val4); \ - *duk__p++ = (duk_uint8_t) (val5); \ - (bw_ctx)->p = duk__p; \ - } while (0) -#define DUK_BW_WRITE_RAW_U8_6(thr, bw_ctx, val1, val2, val3, val4, val5, val6) \ - do { \ - duk_uint8_t *duk__p; \ - DUK_BW_ASSERT_SPACE((thr), (bw_ctx), 6); \ - duk__p = (bw_ctx)->p; \ - *duk__p++ = (duk_uint8_t) (val1); \ - *duk__p++ = (duk_uint8_t) (val2); \ - *duk__p++ = (duk_uint8_t) (val3); \ - *duk__p++ = (duk_uint8_t) (val4); \ - *duk__p++ = (duk_uint8_t) (val5); \ - *duk__p++ = (duk_uint8_t) (val6); \ - (bw_ctx)->p = duk__p; \ - } while (0) -#define DUK_BW_WRITE_RAW_XUTF8(thr, bw_ctx, cp) \ - do { \ - duk_ucodepoint_t duk__cp; \ - duk_small_int_t duk__enc_len; \ - duk__cp = (duk_ucodepoint_t) (cp); \ - DUK_BW_ASSERT_SPACE((thr), (bw_ctx), duk_unicode_get_xutf8_length(duk__cp)); \ - duk__enc_len = duk_unicode_encode_xutf8(duk__cp, (bw_ctx)->p); \ - (bw_ctx)->p += duk__enc_len; \ - } while (0) -#define DUK_BW_WRITE_RAW_CESU8(thr, bw_ctx, cp) \ - do { \ - duk_ucodepoint_t duk__cp; \ - duk_small_int_t duk__enc_len; \ - duk__cp = (duk_ucodepoint_t) (cp); \ - DUK_BW_ASSERT_SPACE((thr), (bw_ctx), duk_unicode_get_cesu8_length(duk__cp)); \ - duk__enc_len = duk_unicode_encode_cesu8(duk__cp, (bw_ctx)->p); \ - (bw_ctx)->p += duk__enc_len; \ - } while (0) -/* XXX: add temporary duk__p pointer here too; sharing */ -/* XXX: avoid unsafe variants */ -#define DUK_BW_WRITE_RAW_BYTES(thr, bw_ctx, valptr, valsz) \ - do { \ - const void *duk__valptr; \ - duk_size_t duk__valsz; \ - duk__valptr = (const void *) (valptr); \ - duk__valsz = (duk_size_t) (valsz); \ - duk_memcpy_unsafe((void *) ((bw_ctx)->p), duk__valptr, duk__valsz); \ - (bw_ctx)->p += duk__valsz; \ - } while (0) -#define DUK_BW_WRITE_RAW_CSTRING(thr, bw_ctx, val) \ - do { \ - const duk_uint8_t *duk__val; \ - duk_size_t duk__val_len; \ - duk__val = (const duk_uint8_t *) (val); \ - duk__val_len = DUK_STRLEN((const char *) duk__val); \ - duk_memcpy_unsafe((void *) ((bw_ctx)->p), (const void *) duk__val, duk__val_len); \ - (bw_ctx)->p += duk__val_len; \ - } while (0) -#define DUK_BW_WRITE_RAW_HSTRING(thr, bw_ctx, val) \ - do { \ - duk_size_t duk__val_len; \ - duk__val_len = DUK_HSTRING_GET_BYTELEN((val)); \ - duk_memcpy_unsafe((void *) ((bw_ctx)->p), (const void *) DUK_HSTRING_GET_DATA((val)), duk__val_len); \ - (bw_ctx)->p += duk__val_len; \ - } while (0) -#define DUK_BW_WRITE_RAW_HBUFFER(thr, bw_ctx, val) \ - do { \ - duk_size_t duk__val_len; \ - duk__val_len = DUK_HBUFFER_GET_SIZE((val)); \ - duk_memcpy_unsafe((void *) ((bw_ctx)->p), \ - (const void *) DUK_HBUFFER_GET_DATA_PTR((thr)->heap, (val)), \ - duk__val_len); \ - (bw_ctx)->p += duk__val_len; \ - } while (0) -#define DUK_BW_WRITE_RAW_HBUFFER_FIXED(thr, bw_ctx, val) \ - do { \ - duk_size_t duk__val_len; \ - duk__val_len = DUK_HBUFFER_FIXED_GET_SIZE((val)); \ - duk_memcpy_unsafe((void *) ((bw_ctx)->p), \ - (const void *) DUK_HBUFFER_FIXED_GET_DATA_PTR((thr)->heap, (val)), \ - duk__val_len); \ - (bw_ctx)->p += duk__val_len; \ - } while (0) -#define DUK_BW_WRITE_RAW_HBUFFER_DYNAMIC(thr, bw_ctx, val) \ - do { \ - duk_size_t duk__val_len; \ - duk__val_len = DUK_HBUFFER_DYNAMIC_GET_SIZE((val)); \ - duk_memcpy_unsafe((void *) ((bw_ctx)->p), \ - (const void *) DUK_HBUFFER_DYNAMIC_GET_DATA_PTR((thr)->heap, (val)), \ - duk__val_len); \ - (bw_ctx)->p += duk__val_len; \ - } while (0) - -/* Append bytes from a slice already in the buffer. */ -#define DUK_BW_WRITE_RAW_SLICE(thr, bw, dst_off, dst_len) duk_bw_write_raw_slice((thr), (bw), (dst_off), (dst_len)) - -/* Insert bytes in the middle of the buffer from an external buffer. */ -#define DUK_BW_INSERT_RAW_BYTES(thr, bw, dst_off, buf, len) duk_bw_insert_raw_bytes((thr), (bw), (dst_off), (buf), (len)) - -/* Insert bytes in the middle of the buffer from a slice already - * in the buffer. Source offset is interpreted "before" the operation. - */ -#define DUK_BW_INSERT_RAW_SLICE(thr, bw, dst_off, src_off, len) duk_bw_insert_raw_slice((thr), (bw), (dst_off), (src_off), (len)) - -/* Insert a reserved area somewhere in the buffer; caller fills it. - * Evaluates to a (duk_uint_t *) pointing to the start of the reserved - * area for convenience. - */ -#define DUK_BW_INSERT_RAW_AREA(thr, bw, off, len) duk_bw_insert_raw_area((thr), (bw), (off), (len)) - -/* Remove a slice from inside buffer. */ -#define DUK_BW_REMOVE_RAW_SLICE(thr, bw, off, len) duk_bw_remove_raw_slice((thr), (bw), (off), (len)) - -/* Safe write calls which will ensure space first. */ - -#define DUK_BW_WRITE_ENSURE_U8(thr, bw_ctx, val) \ - do { \ - DUK_BW_ENSURE((thr), (bw_ctx), 1); \ - DUK_BW_WRITE_RAW_U8((thr), (bw_ctx), (val)); \ - } while (0) -#define DUK_BW_WRITE_ENSURE_U8_2(thr, bw_ctx, val1, val2) \ - do { \ - DUK_BW_ENSURE((thr), (bw_ctx), 2); \ - DUK_BW_WRITE_RAW_U8_2((thr), (bw_ctx), (val1), (val2)); \ - } while (0) -#define DUK_BW_WRITE_ENSURE_U8_3(thr, bw_ctx, val1, val2, val3) \ - do { \ - DUK_BW_ENSURE((thr), (bw_ctx), 3); \ - DUK_BW_WRITE_RAW_U8_3((thr), (bw_ctx), (val1), (val2), (val3)); \ - } while (0) -#define DUK_BW_WRITE_ENSURE_U8_4(thr, bw_ctx, val1, val2, val3, val4) \ - do { \ - DUK_BW_ENSURE((thr), (bw_ctx), 4); \ - DUK_BW_WRITE_RAW_U8_4((thr), (bw_ctx), (val1), (val2), (val3), (val4)); \ - } while (0) -#define DUK_BW_WRITE_ENSURE_U8_5(thr, bw_ctx, val1, val2, val3, val4, val5) \ - do { \ - DUK_BW_ENSURE((thr), (bw_ctx), 5); \ - DUK_BW_WRITE_RAW_U8_5((thr), (bw_ctx), (val1), (val2), (val3), (val4), (val5)); \ - } while (0) -#define DUK_BW_WRITE_ENSURE_U8_6(thr, bw_ctx, val1, val2, val3, val4, val5, val6) \ - do { \ - DUK_BW_ENSURE((thr), (bw_ctx), 6); \ - DUK_BW_WRITE_RAW_U8_6((thr), (bw_ctx), (val1), (val2), (val3), (val4), (val5), (val6)); \ - } while (0) -#define DUK_BW_WRITE_ENSURE_XUTF8(thr, bw_ctx, cp) \ - do { \ - DUK_BW_ENSURE((thr), (bw_ctx), DUK_UNICODE_MAX_XUTF8_LENGTH); \ - DUK_BW_WRITE_RAW_XUTF8((thr), (bw_ctx), (cp)); \ - } while (0) -#define DUK_BW_WRITE_ENSURE_CESU8(thr, bw_ctx, cp) \ - do { \ - DUK_BW_ENSURE((thr), (bw_ctx), DUK_UNICODE_MAX_CESU8_LENGTH); \ - DUK_BW_WRITE_RAW_CESU8((thr), (bw_ctx), (cp)); \ - } while (0) -/* XXX: add temporary duk__p pointer here too; sharing */ -/* XXX: avoid unsafe */ -#define DUK_BW_WRITE_ENSURE_BYTES(thr, bw_ctx, valptr, valsz) \ - do { \ - const void *duk__valptr; \ - duk_size_t duk__valsz; \ - duk__valptr = (const void *) (valptr); \ - duk__valsz = (duk_size_t) (valsz); \ - DUK_BW_ENSURE((thr), (bw_ctx), duk__valsz); \ - duk_memcpy_unsafe((void *) ((bw_ctx)->p), duk__valptr, duk__valsz); \ - (bw_ctx)->p += duk__valsz; \ - } while (0) -#define DUK_BW_WRITE_ENSURE_CSTRING(thr, bw_ctx, val) \ - do { \ - const duk_uint8_t *duk__val; \ - duk_size_t duk__val_len; \ - duk__val = (const duk_uint8_t *) (val); \ - duk__val_len = DUK_STRLEN((const char *) duk__val); \ - DUK_BW_ENSURE((thr), (bw_ctx), duk__val_len); \ - duk_memcpy_unsafe((void *) ((bw_ctx)->p), (const void *) duk__val, duk__val_len); \ - (bw_ctx)->p += duk__val_len; \ - } while (0) -#define DUK_BW_WRITE_ENSURE_HSTRING(thr, bw_ctx, val) \ - do { \ - duk_size_t duk__val_len; \ - duk__val_len = DUK_HSTRING_GET_BYTELEN((val)); \ - DUK_BW_ENSURE((thr), (bw_ctx), duk__val_len); \ - duk_memcpy_unsafe((void *) ((bw_ctx)->p), (const void *) DUK_HSTRING_GET_DATA((val)), duk__val_len); \ - (bw_ctx)->p += duk__val_len; \ - } while (0) -#define DUK_BW_WRITE_ENSURE_HBUFFER(thr, bw_ctx, val) \ - do { \ - duk_size_t duk__val_len; \ - duk__val_len = DUK_HBUFFER_GET_SIZE((val)); \ - DUK_BW_ENSURE((thr), (bw_ctx), duk__val_len); \ - duk_memcpy_unsafe((void *) ((bw_ctx)->p), \ - (const void *) DUK_HBUFFER_GET_DATA_PTR((thr)->heap, (val)), \ - duk__val_len); \ - (bw_ctx)->p += duk__val_len; \ - } while (0) -#define DUK_BW_WRITE_ENSURE_HBUFFER_FIXED(thr, bw_ctx, val) \ - do { \ - duk_size_t duk__val_len; \ - duk__val_len = DUK_HBUFFER_FIXED_GET_SIZE((val)); \ - DUK_BW_ENSURE((thr), (bw_ctx), duk__val_len); \ - duk_memcpy_unsafe((void *) ((bw_ctx)->p), \ - (const void *) DUK_HBUFFER_FIXED_GET_DATA_PTR((thr)->heap, (val)), \ - duk__val_len); \ - (bw_ctx)->p += duk__val_len; \ - } while (0) -#define DUK_BW_WRITE_ENSURE_HBUFFER_DYNAMIC(thr, bw_ctx, val) \ - do { \ - duk_size_t duk__val_len; \ - duk__val_len = DUK_HBUFFER_DYNAMIC_GET_SIZE((val)); \ - DUK_BW_ENSURE((thr), (bw_ctx), duk__val_len); \ - duk_memcpy_unsafe((void *) ((bw_ctx)->p), \ - (const void *) DUK_HBUFFER_DYNAMIC_GET_DATA_PTR((thr)->heap, (val)), \ - duk__val_len); \ - (bw_ctx)->p += duk__val_len; \ - } while (0) - -#define DUK_BW_WRITE_ENSURE_SLICE(thr, bw, dst_off, dst_len) duk_bw_write_ensure_slice((thr), (bw), (dst_off), (dst_len)) -#define DUK_BW_INSERT_ENSURE_BYTES(thr, bw, dst_off, buf, len) duk_bw_insert_ensure_bytes((thr), (bw), (dst_off), (buf), (len)) -#define DUK_BW_INSERT_ENSURE_SLICE(thr, bw, dst_off, src_off, len) \ - duk_bw_insert_ensure_slice((thr), (bw), (dst_off), (src_off), (len)) -#define DUK_BW_INSERT_ENSURE_AREA(thr, bw, off, len) \ - /* Evaluates to (duk_uint8_t *) pointing to start of area. */ \ - duk_bw_insert_ensure_area((thr), (bw), (off), (len)) -#define DUK_BW_REMOVE_ENSURE_SLICE(thr, bw, off, len) \ - /* No difference between raw/ensure because the buffer shrinks. */ \ - DUK_BW_REMOVE_RAW_SLICE((thr), (bw), (off), (len)) - -/* - * Externs and prototypes - */ - -#if !defined(DUK_SINGLE_FILE) -DUK_INTERNAL_DECL const duk_uint8_t duk_lc_digits[36]; -DUK_INTERNAL_DECL const duk_uint8_t duk_uc_nybbles[16]; -DUK_INTERNAL_DECL const duk_int8_t duk_hex_dectab[256]; -#if defined(DUK_USE_HEX_FASTPATH) -DUK_INTERNAL_DECL const duk_int16_t duk_hex_dectab_shift4[256]; -DUK_INTERNAL_DECL const duk_uint16_t duk_hex_enctab[256]; -#endif -#endif /* !DUK_SINGLE_FILE */ - -/* Note: assumes that duk_util_probe_steps size is 32 */ -#if defined(DUK_USE_HOBJECT_HASH_PART) -#if !defined(DUK_SINGLE_FILE) -DUK_INTERNAL_DECL duk_uint8_t duk_util_probe_steps[32]; -#endif /* !DUK_SINGLE_FILE */ -#endif - -#if defined(DUK_USE_STRHASH_DENSE) -DUK_INTERNAL_DECL duk_uint32_t duk_util_hashbytes(const duk_uint8_t *data, duk_size_t len, duk_uint32_t seed); -#endif - -DUK_INTERNAL_DECL duk_uint32_t duk_bd_decode(duk_bitdecoder_ctx *ctx, duk_small_int_t bits); -DUK_INTERNAL_DECL duk_small_uint_t duk_bd_decode_flag(duk_bitdecoder_ctx *ctx); -DUK_INTERNAL_DECL duk_uint32_t duk_bd_decode_flagged(duk_bitdecoder_ctx *ctx, duk_small_int_t bits, duk_uint32_t def_value); -DUK_INTERNAL_DECL duk_int32_t duk_bd_decode_flagged_signed(duk_bitdecoder_ctx *ctx, duk_small_int_t bits, duk_int32_t def_value); -DUK_INTERNAL_DECL duk_uint32_t duk_bd_decode_varuint(duk_bitdecoder_ctx *ctx); -DUK_INTERNAL_DECL duk_small_uint_t duk_bd_decode_bitpacked_string(duk_bitdecoder_ctx *bd, duk_uint8_t *out); - -DUK_INTERNAL_DECL void duk_be_encode(duk_bitencoder_ctx *ctx, duk_uint32_t data, duk_small_int_t bits); -DUK_INTERNAL_DECL void duk_be_finish(duk_bitencoder_ctx *ctx); - -#if !defined(DUK_USE_GET_RANDOM_DOUBLE) -DUK_INTERNAL_DECL duk_double_t duk_util_tinyrandom_get_double(duk_hthread *thr); -DUK_INTERNAL_DECL void duk_util_tinyrandom_prepare_seed(duk_hthread *thr); -#endif - -DUK_INTERNAL_DECL void duk_bw_init(duk_hthread *thr, duk_bufwriter_ctx *bw_ctx, duk_hbuffer_dynamic *h_buf); -DUK_INTERNAL_DECL void duk_bw_init_pushbuf(duk_hthread *thr, duk_bufwriter_ctx *bw_ctx, duk_size_t buf_size); -DUK_INTERNAL_DECL duk_uint8_t *duk_bw_resize(duk_hthread *thr, duk_bufwriter_ctx *bw_ctx, duk_size_t sz); -DUK_INTERNAL_DECL void duk_bw_compact(duk_hthread *thr, duk_bufwriter_ctx *bw_ctx); -DUK_INTERNAL_DECL void duk_bw_write_raw_slice(duk_hthread *thr, duk_bufwriter_ctx *bw, duk_size_t src_off, duk_size_t len); -DUK_INTERNAL_DECL void duk_bw_write_ensure_slice(duk_hthread *thr, duk_bufwriter_ctx *bw, duk_size_t src_off, duk_size_t len); -DUK_INTERNAL_DECL void duk_bw_insert_raw_bytes(duk_hthread *thr, - duk_bufwriter_ctx *bw, - duk_size_t dst_off, - const duk_uint8_t *buf, - duk_size_t len); -DUK_INTERNAL_DECL void duk_bw_insert_ensure_bytes(duk_hthread *thr, - duk_bufwriter_ctx *bw, - duk_size_t dst_off, - const duk_uint8_t *buf, - duk_size_t len); -DUK_INTERNAL_DECL void duk_bw_insert_raw_slice(duk_hthread *thr, - duk_bufwriter_ctx *bw, - duk_size_t dst_off, - duk_size_t src_off, - duk_size_t len); -DUK_INTERNAL_DECL void duk_bw_insert_ensure_slice(duk_hthread *thr, - duk_bufwriter_ctx *bw, - duk_size_t dst_off, - duk_size_t src_off, - duk_size_t len); -DUK_INTERNAL_DECL duk_uint8_t *duk_bw_insert_raw_area(duk_hthread *thr, duk_bufwriter_ctx *bw, duk_size_t off, duk_size_t len); -DUK_INTERNAL_DECL duk_uint8_t *duk_bw_insert_ensure_area(duk_hthread *thr, duk_bufwriter_ctx *bw, duk_size_t off, duk_size_t len); -DUK_INTERNAL_DECL void duk_bw_remove_raw_slice(duk_hthread *thr, duk_bufwriter_ctx *bw, duk_size_t off, duk_size_t len); -/* No duk_bw_remove_ensure_slice(), functionality would be identical. */ - -DUK_INTERNAL_DECL duk_uint16_t duk_raw_read_u16_be(const duk_uint8_t *p); -DUK_INTERNAL_DECL duk_uint32_t duk_raw_read_u32_be(const duk_uint8_t *p); -DUK_INTERNAL_DECL duk_float_t duk_raw_read_float_be(const duk_uint8_t *p); -DUK_INTERNAL_DECL duk_double_t duk_raw_read_double_be(const duk_uint8_t *p); -DUK_INTERNAL_DECL duk_uint16_t duk_raw_readinc_u16_be(const duk_uint8_t **p); -DUK_INTERNAL_DECL duk_uint32_t duk_raw_readinc_u32_be(const duk_uint8_t **p); -DUK_INTERNAL_DECL duk_float_t duk_raw_readinc_float_be(const duk_uint8_t **p); -DUK_INTERNAL_DECL duk_double_t duk_raw_readinc_double_be(const duk_uint8_t **p); -DUK_INTERNAL_DECL void duk_raw_write_u16_be(duk_uint8_t *p, duk_uint16_t val); -DUK_INTERNAL_DECL void duk_raw_write_u32_be(duk_uint8_t *p, duk_uint32_t val); -DUK_INTERNAL_DECL void duk_raw_write_float_be(duk_uint8_t *p, duk_float_t val); -DUK_INTERNAL_DECL void duk_raw_write_double_be(duk_uint8_t *p, duk_double_t val); -DUK_INTERNAL_DECL duk_small_int_t duk_raw_write_xutf8(duk_uint8_t *p, duk_ucodepoint_t val); -DUK_INTERNAL_DECL duk_small_int_t duk_raw_write_cesu8(duk_uint8_t *p, duk_ucodepoint_t val); -DUK_INTERNAL_DECL void duk_raw_writeinc_u16_be(duk_uint8_t **p, duk_uint16_t val); -DUK_INTERNAL_DECL void duk_raw_writeinc_u32_be(duk_uint8_t **p, duk_uint32_t val); -DUK_INTERNAL_DECL void duk_raw_writeinc_float_be(duk_uint8_t **p, duk_float_t val); -DUK_INTERNAL_DECL void duk_raw_writeinc_double_be(duk_uint8_t **p, duk_double_t val); -DUK_INTERNAL_DECL void duk_raw_writeinc_xutf8(duk_uint8_t **p, duk_ucodepoint_t val); -DUK_INTERNAL_DECL void duk_raw_writeinc_cesu8(duk_uint8_t **p, duk_ucodepoint_t val); - -#if defined(DUK_USE_DEBUGGER_SUPPORT) /* For now only needed by the debugger. */ -DUK_INTERNAL_DECL void duk_byteswap_bytes(duk_uint8_t *p, duk_small_uint_t len); -#endif - -DUK_INTERNAL_DECL duk_double_t duk_util_get_random_double(duk_hthread *thr); - -/* memcpy(), memmove() etc wrappers. The plain variants like duk_memcpy() - * assume C99+ and 'src' and 'dst' pointers must be non-NULL even when the - * operation size is zero. The unsafe variants like duk_memcpy_safe() deal - * with the zero size case explicitly, and allow NULL pointers in that case - * (which is undefined behavior in C99+). For the majority of actual targets - * a NULL pointer with a zero length is fine in practice. These wrappers are - * macros to force inlining; because there are hundreds of call sites, even a - * few extra bytes per call site adds up to ~1kB footprint. - */ -#if defined(DUK_USE_ALLOW_UNDEFINED_BEHAVIOR) -#define duk_memcpy(dst, src, len) \ - do { \ - void *duk__dst = (dst); \ - const void *duk__src = (src); \ - duk_size_t duk__len = (len); \ - DUK_ASSERT(duk__dst != NULL || duk__len == 0U); \ - DUK_ASSERT(duk__src != NULL || duk__len == 0U); \ - (void) DUK_MEMCPY(duk__dst, duk__src, (size_t) duk__len); \ - } while (0) -#define duk_memcpy_unsafe(dst, src, len) duk_memcpy((dst), (src), (len)) -#define duk_memmove(dst, src, len) \ - do { \ - void *duk__dst = (dst); \ - const void *duk__src = (src); \ - duk_size_t duk__len = (len); \ - DUK_ASSERT(duk__dst != NULL || duk__len == 0U); \ - DUK_ASSERT(duk__src != NULL || duk__len == 0U); \ - (void) DUK_MEMMOVE(duk__dst, duk__src, (size_t) duk__len); \ - } while (0) -#define duk_memmove_unsafe(dst, src, len) duk_memmove((dst), (src), (len)) -#define duk_memset(dst, val, len) \ - do { \ - void *duk__dst = (dst); \ - duk_small_int_t duk__val = (val); \ - duk_size_t duk__len = (len); \ - DUK_ASSERT(duk__dst != NULL || duk__len == 0U); \ - (void) DUK_MEMSET(duk__dst, duk__val, (size_t) duk__len); \ - } while (0) -#define duk_memset_unsafe(dst, val, len) duk_memset((dst), (val), (len)) -#define duk_memzero(dst, len) \ - do { \ - void *duk__dst = (dst); \ - duk_size_t duk__len = (len); \ - DUK_ASSERT(duk__dst != NULL || duk__len == 0U); \ - (void) DUK_MEMZERO(duk__dst, (size_t) duk__len); \ - } while (0) -#define duk_memzero_unsafe(dst, len) duk_memzero((dst), (len)) -#else /* DUK_USE_ALLOW_UNDEFINED_BEHAVIOR */ -#define duk_memcpy(dst, src, len) \ - do { \ - void *duk__dst = (dst); \ - const void *duk__src = (src); \ - duk_size_t duk__len = (len); \ - DUK_ASSERT(duk__dst != NULL); \ - DUK_ASSERT(duk__src != NULL); \ - (void) DUK_MEMCPY(duk__dst, duk__src, (size_t) duk__len); \ - } while (0) -#define duk_memcpy_unsafe(dst, src, len) \ - do { \ - void *duk__dst = (dst); \ - const void *duk__src = (src); \ - duk_size_t duk__len = (len); \ - DUK_ASSERT(duk__dst != NULL || duk__len == 0U); \ - DUK_ASSERT(duk__src != NULL || duk__len == 0U); \ - if (DUK_LIKELY(duk__len > 0U)) { \ - DUK_ASSERT(duk__dst != NULL); \ - DUK_ASSERT(duk__src != NULL); \ - (void) DUK_MEMCPY(duk__dst, duk__src, (size_t) duk__len); \ - } \ - } while (0) -#define duk_memmove(dst, src, len) \ - do { \ - void *duk__dst = (dst); \ - const void *duk__src = (src); \ - duk_size_t duk__len = (len); \ - DUK_ASSERT(duk__dst != NULL); \ - DUK_ASSERT(duk__src != NULL); \ - (void) DUK_MEMMOVE(duk__dst, duk__src, (size_t) duk__len); \ - } while (0) -#define duk_memmove_unsafe(dst, src, len) \ - do { \ - void *duk__dst = (dst); \ - const void *duk__src = (src); \ - duk_size_t duk__len = (len); \ - DUK_ASSERT(duk__dst != NULL || duk__len == 0U); \ - DUK_ASSERT(duk__src != NULL || duk__len == 0U); \ - if (DUK_LIKELY(duk__len > 0U)) { \ - DUK_ASSERT(duk__dst != NULL); \ - DUK_ASSERT(duk__src != NULL); \ - (void) DUK_MEMMOVE(duk__dst, duk__src, (size_t) duk__len); \ - } \ - } while (0) -#define duk_memset(dst, val, len) \ - do { \ - void *duk__dst = (dst); \ - duk_small_int_t duk__val = (val); \ - duk_size_t duk__len = (len); \ - DUK_ASSERT(duk__dst != NULL); \ - (void) DUK_MEMSET(duk__dst, duk__val, (size_t) duk__len); \ - } while (0) -#define duk_memset_unsafe(dst, val, len) \ - do { \ - void *duk__dst = (dst); \ - duk_small_int_t duk__val = (val); \ - duk_size_t duk__len = (len); \ - DUK_ASSERT(duk__dst != NULL || duk__len == 0U); \ - if (DUK_LIKELY(duk__len > 0U)) { \ - DUK_ASSERT(duk__dst != NULL); \ - (void) DUK_MEMSET(duk__dst, duk__val, (size_t) duk__len); \ - } \ - } while (0) -#define duk_memzero(dst, len) \ - do { \ - void *duk__dst = (dst); \ - duk_size_t duk__len = (len); \ - DUK_ASSERT(duk__dst != NULL); \ - (void) DUK_MEMZERO(duk__dst, (size_t) duk__len); \ - } while (0) -#define duk_memzero_unsafe(dst, len) \ - do { \ - void *duk__dst = (dst); \ - duk_size_t duk__len = (len); \ - DUK_ASSERT(duk__dst != NULL || duk__len == 0U); \ - if (DUK_LIKELY(duk__len > 0U)) { \ - DUK_ASSERT(duk__dst != NULL); \ - (void) DUK_MEMZERO(duk__dst, (size_t) duk__len); \ - } \ - } while (0) -#endif /* DUK_USE_ALLOW_UNDEFINED_BEHAVIOR */ - -DUK_INTERNAL_DECL duk_small_int_t duk_memcmp(const void *s1, const void *s2, duk_size_t len); -DUK_INTERNAL_DECL duk_small_int_t duk_memcmp_unsafe(const void *s1, const void *s2, duk_size_t len); - -DUK_INTERNAL_DECL duk_bool_t duk_is_whole_get_int32_nonegzero(duk_double_t x, duk_int32_t *ival); -DUK_INTERNAL_DECL duk_bool_t duk_is_whole_get_int32(duk_double_t x, duk_int32_t *ival); -DUK_INTERNAL_DECL duk_bool_t duk_double_is_anyinf(duk_double_t x); -DUK_INTERNAL_DECL duk_bool_t duk_double_is_posinf(duk_double_t x); -DUK_INTERNAL_DECL duk_bool_t duk_double_is_neginf(duk_double_t x); -DUK_INTERNAL_DECL duk_bool_t duk_double_is_nan(duk_double_t x); -DUK_INTERNAL_DECL duk_bool_t duk_double_is_nan_or_zero(duk_double_t x); -DUK_INTERNAL_DECL duk_bool_t duk_double_is_nan_or_inf(duk_double_t x); -DUK_INTERNAL_DECL duk_bool_t duk_double_is_nan_zero_inf(duk_double_t x); -DUK_INTERNAL_DECL duk_small_uint_t duk_double_signbit(duk_double_t x); -DUK_INTERNAL_DECL duk_double_t duk_double_trunc_towards_zero(duk_double_t x); -DUK_INTERNAL_DECL duk_bool_t duk_double_same_sign(duk_double_t x, duk_double_t y); -DUK_INTERNAL_DECL duk_double_t duk_double_fmin(duk_double_t x, duk_double_t y); -DUK_INTERNAL_DECL duk_double_t duk_double_fmax(duk_double_t x, duk_double_t y); -DUK_INTERNAL_DECL duk_bool_t duk_double_is_finite(duk_double_t x); -DUK_INTERNAL_DECL duk_bool_t duk_double_is_integer(duk_double_t x); -DUK_INTERNAL_DECL duk_bool_t duk_double_is_safe_integer(duk_double_t x); - -DUK_INTERNAL_DECL duk_double_t duk_double_div(duk_double_t x, duk_double_t y); -DUK_INTERNAL_DECL duk_int_t duk_double_to_int_t(duk_double_t x); -DUK_INTERNAL_DECL duk_uint_t duk_double_to_uint_t(duk_double_t x); -DUK_INTERNAL_DECL duk_int32_t duk_double_to_int32_t(duk_double_t x); -DUK_INTERNAL_DECL duk_uint32_t duk_double_to_uint32_t(duk_double_t x); -DUK_INTERNAL_DECL duk_float_t duk_double_to_float_t(duk_double_t x); -DUK_INTERNAL_DECL duk_bool_t duk_double_equals(duk_double_t x, duk_double_t y); -DUK_INTERNAL_DECL duk_bool_t duk_float_equals(duk_float_t x, duk_float_t y); - -/* - * Miscellaneous - */ - -/* Example: x = 0x10 = 0b00010000 - * x - 1 = 0x0f = 0b00001111 - * x & (x - 1) == 0 - * - * x = 0x07 = 0b00000111 - * x - 1 = 0x06 = 0b00000110 - * x & (x - 1) != 0 - * - * However, incorrectly true for x == 0 so check for that explicitly. - */ -#define DUK_IS_POWER_OF_TWO(x) ((x) != 0U && ((x) & ((x) -1U)) == 0U) - -#endif /* DUK_UTIL_H_INCLUDED */ -/* #include duk_strings.h */ -#line 1 "duk_strings.h" -/* - * Shared string macros. - * - * Using shared macros helps minimize strings data size because it's easy - * to check if an existing string could be used. String constants don't - * need to be all defined here; defining a string here makes sense if there's - * a high chance the string could be reused. Also, using macros allows - * a call site express the exact string needed, but the macro may map to an - * approximate string to reduce unique string count. Macros can also be - * more easily tuned for low memory targets than #if defined()s throughout - * the code base. - * - * Because format strings behave differently in the call site (they need to - * be followed by format arguments), they use a special prefix DUK_STR_FMT_. - * - * On some compilers using explicit shared strings is preferable; on others - * it may be better to use straight literals because the compiler will combine - * them anyway, and such strings won't end up unnecessarily in a symbol table. - */ - -#if !defined(DUK_ERRMSG_H_INCLUDED) -#define DUK_ERRMSG_H_INCLUDED - -/* Mostly API and built-in method related */ -#define DUK_STR_INTERNAL_ERROR "internal error" -#define DUK_STR_UNSUPPORTED "unsupported" -#define DUK_STR_INVALID_COUNT "invalid count" -#define DUK_STR_INVALID_ARGS "invalid args" -#define DUK_STR_INVALID_STATE "invalid state" -#define DUK_STR_INVALID_INPUT "invalid input" -#define DUK_STR_INVALID_LENGTH "invalid length" -#define DUK_STR_NOT_CONSTRUCTABLE "not constructable" -#define DUK_STR_CONSTRUCT_ONLY "constructor requires 'new'" -#define DUK_STR_NOT_CALLABLE "not callable" -#define DUK_STR_NOT_EXTENSIBLE "not extensible" -#define DUK_STR_NOT_WRITABLE "not writable" -#define DUK_STR_NOT_CONFIGURABLE "not configurable" -#define DUK_STR_INVALID_CONTEXT "invalid context" -#define DUK_STR_INVALID_INDEX "invalid args" -#define DUK_STR_PUSH_BEYOND_ALLOC_STACK "cannot push beyond allocated stack" -#define DUK_STR_NOT_UNDEFINED "unexpected type" -#define DUK_STR_NOT_NULL "unexpected type" -#define DUK_STR_NOT_BOOLEAN "unexpected type" -#define DUK_STR_NOT_NUMBER "unexpected type" -#define DUK_STR_NOT_STRING "unexpected type" -#define DUK_STR_NOT_OBJECT "unexpected type" -#define DUK_STR_NOT_POINTER "unexpected type" -#define DUK_STR_NOT_BUFFER "not buffer" /* still in use with verbose messages */ -#define DUK_STR_UNEXPECTED_TYPE "unexpected type" -#define DUK_STR_NOT_THREAD "unexpected type" -#define DUK_STR_NOT_COMPFUNC "unexpected type" -#define DUK_STR_NOT_NATFUNC "unexpected type" -#define DUK_STR_NOT_C_FUNCTION "unexpected type" -#define DUK_STR_NOT_FUNCTION "unexpected type" -#define DUK_STR_NOT_REGEXP "unexpected type" -#define DUK_STR_TOPRIMITIVE_FAILED "coercion to primitive failed" -#define DUK_STR_NUMBER_OUTSIDE_RANGE "number outside range" -#define DUK_STR_NOT_OBJECT_COERCIBLE "not object coercible" -#define DUK_STR_CANNOT_NUMBER_COERCE_SYMBOL "cannot number coerce Symbol" -#define DUK_STR_CANNOT_STRING_COERCE_SYMBOL "cannot string coerce Symbol" -#define DUK_STR_STRING_TOO_LONG "string too long" -#define DUK_STR_BUFFER_TOO_LONG "buffer too long" -#define DUK_STR_ALLOC_FAILED "alloc failed" -#define DUK_STR_WRONG_BUFFER_TYPE "wrong buffer type" -#define DUK_STR_BASE64_ENCODE_FAILED "base64 encode failed" -#define DUK_STR_SOURCE_DECODE_FAILED "source decode failed" -#define DUK_STR_UTF8_DECODE_FAILED "utf-8 decode failed" -#define DUK_STR_BASE64_DECODE_FAILED "base64 decode failed" -#define DUK_STR_HEX_DECODE_FAILED "hex decode failed" -#define DUK_STR_INVALID_BYTECODE "invalid bytecode" -#define DUK_STR_NO_SOURCECODE "no sourcecode" -#define DUK_STR_RESULT_TOO_LONG "result too long" -#define DUK_STR_INVALID_CFUNC_RC "invalid C function rc" -#define DUK_STR_INVALID_INSTANCEOF_RVAL "invalid instanceof rval" -#define DUK_STR_INVALID_INSTANCEOF_RVAL_NOPROTO "instanceof rval has no .prototype" - -/* JSON */ -#define DUK_STR_FMT_PTR "%p" -#define DUK_STR_FMT_INVALID_JSON "invalid json (at offset %ld)" -#define DUK_STR_CYCLIC_INPUT "cyclic input" - -/* Generic codec */ -#define DUK_STR_DEC_RECLIMIT "decode recursion limit" -#define DUK_STR_ENC_RECLIMIT "encode recursion limit" - -/* Object property access */ -#define DUK_STR_INVALID_BASE "invalid base value" -#define DUK_STR_STRICT_CALLER_READ "cannot read strict 'caller'" -#define DUK_STR_PROXY_REJECTED "proxy rejected" -#define DUK_STR_INVALID_ARRAY_LENGTH "invalid array length" -#define DUK_STR_SETTER_UNDEFINED "setter undefined" -#define DUK_STR_INVALID_DESCRIPTOR "invalid descriptor" - -/* Proxy */ -#define DUK_STR_PROXY_REVOKED "proxy revoked" -#define DUK_STR_INVALID_TRAP_RESULT "invalid trap result" - -/* Variables */ - -/* Lexer */ -#define DUK_STR_INVALID_ESCAPE "invalid escape" -#define DUK_STR_UNTERMINATED_STRING "unterminated string" -#define DUK_STR_UNTERMINATED_COMMENT "unterminated comment" -#define DUK_STR_UNTERMINATED_REGEXP "unterminated regexp" -#define DUK_STR_TOKEN_LIMIT "token limit" -#define DUK_STR_REGEXP_SUPPORT_DISABLED "regexp support disabled" -#define DUK_STR_INVALID_NUMBER_LITERAL "invalid number literal" -#define DUK_STR_INVALID_TOKEN "invalid token" - -/* Compiler */ -#define DUK_STR_PARSE_ERROR "parse error" -#define DUK_STR_DUPLICATE_LABEL "duplicate label" -#define DUK_STR_INVALID_LABEL "invalid label" -#define DUK_STR_INVALID_ARRAY_LITERAL "invalid array literal" -#define DUK_STR_INVALID_OBJECT_LITERAL "invalid object literal" -#define DUK_STR_INVALID_VAR_DECLARATION "invalid variable declaration" -#define DUK_STR_CANNOT_DELETE_IDENTIFIER "cannot delete identifier" -#define DUK_STR_INVALID_EXPRESSION "invalid expression" -#define DUK_STR_INVALID_LVALUE "invalid lvalue" -#define DUK_STR_INVALID_NEWTARGET "invalid new.target" -#define DUK_STR_EXPECTED_IDENTIFIER "expected identifier" -#define DUK_STR_EMPTY_EXPR_NOT_ALLOWED "empty expression not allowed" -#define DUK_STR_INVALID_FOR "invalid for statement" -#define DUK_STR_INVALID_SWITCH "invalid switch statement" -#define DUK_STR_INVALID_BREAK_CONT_LABEL "invalid break/continue label" -#define DUK_STR_INVALID_RETURN "invalid return" -#define DUK_STR_INVALID_TRY "invalid try" -#define DUK_STR_INVALID_THROW "invalid throw" -#define DUK_STR_WITH_IN_STRICT_MODE "with in strict mode" -#define DUK_STR_FUNC_STMT_NOT_ALLOWED "function statement not allowed" -#define DUK_STR_UNTERMINATED_STMT "unterminated statement" -#define DUK_STR_INVALID_ARG_NAME "invalid argument name" -#define DUK_STR_INVALID_FUNC_NAME "invalid function name" -#define DUK_STR_INVALID_GETSET_NAME "invalid getter/setter name" -#define DUK_STR_FUNC_NAME_REQUIRED "function name required" - -/* RegExp */ -#define DUK_STR_INVALID_QUANTIFIER "invalid regexp quantifier" -#define DUK_STR_INVALID_QUANTIFIER_NO_ATOM "quantifier without preceding atom" -#define DUK_STR_INVALID_QUANTIFIER_VALUES "quantifier values invalid (qmin > qmax)" -#define DUK_STR_QUANTIFIER_TOO_MANY_COPIES "quantifier requires too many atom copies" -#define DUK_STR_UNEXPECTED_CLOSING_PAREN "unexpected closing parenthesis" -#define DUK_STR_UNEXPECTED_END_OF_PATTERN "unexpected end of pattern" -#define DUK_STR_UNEXPECTED_REGEXP_TOKEN "unexpected token in regexp" -#define DUK_STR_INVALID_REGEXP_FLAGS "invalid regexp flags" -#define DUK_STR_INVALID_REGEXP_ESCAPE "invalid regexp escape" -#define DUK_STR_INVALID_BACKREFS "invalid backreference(s)" -#define DUK_STR_INVALID_REGEXP_CHARACTER "invalid regexp character" -#define DUK_STR_INVALID_REGEXP_GROUP "invalid regexp group" -#define DUK_STR_UNTERMINATED_CHARCLASS "unterminated character class" -#define DUK_STR_INVALID_RANGE "invalid range" - -/* Limits */ -#define DUK_STR_VALSTACK_LIMIT "valstack limit" -#define DUK_STR_CALLSTACK_LIMIT "callstack limit" -#define DUK_STR_PROTOTYPE_CHAIN_LIMIT "prototype chain limit" -#define DUK_STR_BOUND_CHAIN_LIMIT "function call bound chain limit" -#define DUK_STR_NATIVE_STACK_LIMIT "C stack depth limit" -#define DUK_STR_COMPILER_RECURSION_LIMIT "compiler recursion limit" -#define DUK_STR_BYTECODE_LIMIT "bytecode limit" -#define DUK_STR_REG_LIMIT "register limit" -#define DUK_STR_TEMP_LIMIT "temp limit" -#define DUK_STR_CONST_LIMIT "const limit" -#define DUK_STR_FUNC_LIMIT "function limit" -#define DUK_STR_REGEXP_COMPILER_RECURSION_LIMIT "regexp compiler recursion limit" -#define DUK_STR_REGEXP_EXECUTOR_RECURSION_LIMIT "regexp executor recursion limit" -#define DUK_STR_REGEXP_EXECUTOR_STEP_LIMIT "regexp step limit" - -#endif /* DUK_ERRMSG_H_INCLUDED */ -/* #include duk_js_bytecode.h */ -#line 1 "duk_js_bytecode.h" -/* - * ECMAScript bytecode - */ - -#if !defined(DUK_JS_BYTECODE_H_INCLUDED) -#define DUK_JS_BYTECODE_H_INCLUDED - -/* - * Bytecode instruction layout - * =========================== - * - * Instructions are unsigned 32-bit integers divided as follows: - * - * !3!3!2!2!2!2!2!2!2!2!2!2!1!1!1!1!1!1!1!1!1!1! ! ! ! ! ! ! ! ! ! ! - * !1!0!9!8!7!6!5!4!3!2!1!0!9!8!7!6!5!4!3!2!1!0!9!8!7!6!5!4!3!2!1!0! - * +-----------------------------------------------+---------------+ - * ! C ! B ! A ! OP ! - * +-----------------------------------------------+---------------+ - * - * OP (8 bits): opcode (DUK_OP_*), access should be fastest - * consecutive opcodes allocated when opcode needs flags - * A (8 bits): typically a target register number - * B (8 bits): typically first source register/constant number - * C (8 bits): typically second source register/constant number - * - * Some instructions combine BC or ABC together for larger parameter values. - * Signed integers (e.g. jump offsets) are encoded as unsigned, with an - * opcode specific bias. - * - * Some opcodes have flags which are handled by allocating consecutive - * opcodes to make space for 1-N flags. Flags can also be e.g. in the 'A' - * field when there's room for the specific opcode. - * - * For example, if three flags were needed, they could be allocated from - * the opcode field as follows: - * - * !3!3!2!2!2!2!2!2!2!2!2!2!1!1!1!1!1!1!1!1!1!1! ! ! ! ! ! ! ! ! ! ! - * !1!0!9!8!7!6!5!4!3!2!1!0!9!8!7!6!5!4!3!2!1!0!9!8!7!6!5!4!3!2!1!0! - * +-----------------------------------------------+---------------+ - * ! C ! B ! A ! OP !Z!Y!X! - * +-----------------------------------------------+---------------+ - * - * Some opcodes accept a reg/const argument which is handled by allocating - * flags in the OP field, see DUK_BC_ISREG() and DUK_BC_ISCONST(). The - * following convention is shared by most opcodes, so that the compiler - * can handle reg/const flagging without opcode specific code paths: - * - * !3!3!2!2!2!2!2!2!2!2!2!2!1!1!1!1!1!1!1!1!1!1! ! ! ! ! ! ! ! ! ! ! - * !1!0!9!8!7!6!5!4!3!2!1!0!9!8!7!6!5!4!3!2!1!0!9!8!7!6!5!4!3!2!1!0! - * +-----------------------------------------------+---------------+ - * ! C ! B ! A ! OP !Y!X! - * +-----------------------------------------------+---------------+ - * - * X 1=B is const, 0=B is reg - * Y 1=C is const, 0=C is reg - * - * In effect OP, OP + 1, OP + 2, and OP + 3 are allocated from the - * 8-bit opcode space for a single logical opcode. The base opcode - * number should be divisible by 4. If the opcode is called 'FOO' - * the following opcode constants would be defined: - * - * DUK_OP_FOO 100 // base opcode number - * DUK_OP_FOO_RR 100 // FOO, B=reg, C=reg - * DUK_OP_FOO_CR 101 // FOO, B=const, C=reg - * DUK_OP_FOO_RC 102 // FOO, B=reg, C=const - * DUK_OP_FOO_CC 103 // FOO, B=const, C=const - * - * If only B or C is a reg/const, the unused opcode combinations can be - * used for other opcodes (which take no reg/const argument). However, - * such opcode values are initially reserved, at least while opcode space - * is available. For example, if 'BAR' uses B for a register field and - * C is a reg/const: - * - * DUK_OP_BAR 116 // base opcode number - * DUK_OP_BAR_RR 116 // BAR, B=reg, C=reg - * DUK_OP_BAR_CR_UNUSED 117 // unused, could be repurposed - * DUK_OP_BAR_RC 118 // BAR, B=reg, C=const - * DUK_OP_BAR_CC_UNUSED 119 // unused, could be repurposed - * - * Macro naming is a bit misleading, e.g. "ABC" in macro name but the - * field layout is concretely "CBA" in the register. - */ - -typedef duk_uint32_t duk_instr_t; - -#define DUK_BC_SHIFT_OP 0 -#define DUK_BC_SHIFT_A 8 -#define DUK_BC_SHIFT_B 16 -#define DUK_BC_SHIFT_C 24 -#define DUK_BC_SHIFT_BC DUK_BC_SHIFT_B -#define DUK_BC_SHIFT_ABC DUK_BC_SHIFT_A - -#define DUK_BC_UNSHIFTED_MASK_OP 0xffUL -#define DUK_BC_UNSHIFTED_MASK_A 0xffUL -#define DUK_BC_UNSHIFTED_MASK_B 0xffUL -#define DUK_BC_UNSHIFTED_MASK_C 0xffUL -#define DUK_BC_UNSHIFTED_MASK_BC 0xffffUL -#define DUK_BC_UNSHIFTED_MASK_ABC 0xffffffUL - -#define DUK_BC_SHIFTED_MASK_OP (DUK_BC_UNSHIFTED_MASK_OP << DUK_BC_SHIFT_OP) -#define DUK_BC_SHIFTED_MASK_A (DUK_BC_UNSHIFTED_MASK_A << DUK_BC_SHIFT_A) -#define DUK_BC_SHIFTED_MASK_B (DUK_BC_UNSHIFTED_MASK_B << DUK_BC_SHIFT_B) -#define DUK_BC_SHIFTED_MASK_C (DUK_BC_UNSHIFTED_MASK_C << DUK_BC_SHIFT_C) -#define DUK_BC_SHIFTED_MASK_BC (DUK_BC_UNSHIFTED_MASK_BC << DUK_BC_SHIFT_BC) -#define DUK_BC_SHIFTED_MASK_ABC (DUK_BC_UNSHIFTED_MASK_ABC << DUK_BC_SHIFT_ABC) - -#define DUK_DEC_OP(x) ((x) &0xffUL) -#define DUK_DEC_A(x) (((x) >> 8) & 0xffUL) -#define DUK_DEC_B(x) (((x) >> 16) & 0xffUL) -#define DUK_DEC_C(x) (((x) >> 24) & 0xffUL) -#define DUK_DEC_BC(x) (((x) >> 16) & 0xffffUL) -#define DUK_DEC_ABC(x) (((x) >> 8) & 0xffffffUL) - -#define DUK_ENC_OP(op) ((duk_instr_t) (op)) -#define DUK_ENC_OP_ABC(op, abc) ((duk_instr_t) ((((duk_instr_t) (abc)) << 8) | ((duk_instr_t) (op)))) -#define DUK_ENC_OP_A_BC(op, a, bc) \ - ((duk_instr_t) ((((duk_instr_t) (bc)) << 16) | (((duk_instr_t) (a)) << 8) | ((duk_instr_t) (op)))) -#define DUK_ENC_OP_A_B_C(op, a, b, c) \ - ((duk_instr_t) ((((duk_instr_t) (c)) << 24) | (((duk_instr_t) (b)) << 16) | (((duk_instr_t) (a)) << 8) | \ - ((duk_instr_t) (op)))) -#define DUK_ENC_OP_A_B(op, a, b) DUK_ENC_OP_A_B_C((op), (a), (b), 0) -#define DUK_ENC_OP_A(op, a) DUK_ENC_OP_A_B_C((op), (a), 0, 0) -#define DUK_ENC_OP_BC(op, bc) DUK_ENC_OP_A_BC((op), 0, (bc)) - -/* Get opcode base value with B/C reg/const flags cleared. */ -#define DUK_BC_NOREGCONST_OP(op) ((op) &0xfc) - -/* Constants should be signed so that signed arithmetic involving them - * won't cause values to be coerced accidentally to unsigned. - */ -#define DUK_BC_OP_MIN 0 -#define DUK_BC_OP_MAX 0xffL -#define DUK_BC_A_MIN 0 -#define DUK_BC_A_MAX 0xffL -#define DUK_BC_B_MIN 0 -#define DUK_BC_B_MAX 0xffL -#define DUK_BC_C_MIN 0 -#define DUK_BC_C_MAX 0xffL -#define DUK_BC_BC_MIN 0 -#define DUK_BC_BC_MAX 0xffffL -#define DUK_BC_ABC_MIN 0 -#define DUK_BC_ABC_MAX 0xffffffL - -/* Masks for B/C reg/const indicator in opcode field. */ -#define DUK_BC_REGCONST_B (0x01UL) -#define DUK_BC_REGCONST_C (0x02UL) - -/* Misc. masks for opcode field. */ -#define DUK_BC_INCDECP_FLAG_DEC (0x04UL) -#define DUK_BC_INCDECP_FLAG_POST (0x08UL) - -/* Opcodes. */ -#define DUK_OP_LDREG 0 -#define DUK_OP_STREG 1 -#define DUK_OP_JUMP 2 -#define DUK_OP_LDCONST 3 -#define DUK_OP_LDINT 4 -#define DUK_OP_LDINTX 5 -#define DUK_OP_LDTHIS 6 -#define DUK_OP_LDUNDEF 7 -#define DUK_OP_LDNULL 8 -#define DUK_OP_LDTRUE 9 -#define DUK_OP_LDFALSE 10 -#define DUK_OP_GETVAR 11 -#define DUK_OP_BNOT 12 -#define DUK_OP_LNOT 13 -#define DUK_OP_UNM 14 -#define DUK_OP_UNP 15 -#define DUK_OP_EQ 16 -#define DUK_OP_EQ_RR 16 -#define DUK_OP_EQ_CR 17 -#define DUK_OP_EQ_RC 18 -#define DUK_OP_EQ_CC 19 -#define DUK_OP_NEQ 20 -#define DUK_OP_NEQ_RR 20 -#define DUK_OP_NEQ_CR 21 -#define DUK_OP_NEQ_RC 22 -#define DUK_OP_NEQ_CC 23 -#define DUK_OP_SEQ 24 -#define DUK_OP_SEQ_RR 24 -#define DUK_OP_SEQ_CR 25 -#define DUK_OP_SEQ_RC 26 -#define DUK_OP_SEQ_CC 27 -#define DUK_OP_SNEQ 28 -#define DUK_OP_SNEQ_RR 28 -#define DUK_OP_SNEQ_CR 29 -#define DUK_OP_SNEQ_RC 30 -#define DUK_OP_SNEQ_CC 31 -#define DUK_OP_GT 32 -#define DUK_OP_GT_RR 32 -#define DUK_OP_GT_CR 33 -#define DUK_OP_GT_RC 34 -#define DUK_OP_GT_CC 35 -#define DUK_OP_GE 36 -#define DUK_OP_GE_RR 36 -#define DUK_OP_GE_CR 37 -#define DUK_OP_GE_RC 38 -#define DUK_OP_GE_CC 39 -#define DUK_OP_LT 40 -#define DUK_OP_LT_RR 40 -#define DUK_OP_LT_CR 41 -#define DUK_OP_LT_RC 42 -#define DUK_OP_LT_CC 43 -#define DUK_OP_LE 44 -#define DUK_OP_LE_RR 44 -#define DUK_OP_LE_CR 45 -#define DUK_OP_LE_RC 46 -#define DUK_OP_LE_CC 47 -#define DUK_OP_IFTRUE 48 -#define DUK_OP_IFTRUE_R 48 -#define DUK_OP_IFTRUE_C 49 -#define DUK_OP_IFFALSE 50 -#define DUK_OP_IFFALSE_R 50 -#define DUK_OP_IFFALSE_C 51 -#define DUK_OP_ADD 52 -#define DUK_OP_ADD_RR 52 -#define DUK_OP_ADD_CR 53 -#define DUK_OP_ADD_RC 54 -#define DUK_OP_ADD_CC 55 -#define DUK_OP_SUB 56 -#define DUK_OP_SUB_RR 56 -#define DUK_OP_SUB_CR 57 -#define DUK_OP_SUB_RC 58 -#define DUK_OP_SUB_CC 59 -#define DUK_OP_MUL 60 -#define DUK_OP_MUL_RR 60 -#define DUK_OP_MUL_CR 61 -#define DUK_OP_MUL_RC 62 -#define DUK_OP_MUL_CC 63 -#define DUK_OP_DIV 64 -#define DUK_OP_DIV_RR 64 -#define DUK_OP_DIV_CR 65 -#define DUK_OP_DIV_RC 66 -#define DUK_OP_DIV_CC 67 -#define DUK_OP_MOD 68 -#define DUK_OP_MOD_RR 68 -#define DUK_OP_MOD_CR 69 -#define DUK_OP_MOD_RC 70 -#define DUK_OP_MOD_CC 71 -#define DUK_OP_EXP 72 -#define DUK_OP_EXP_RR 72 -#define DUK_OP_EXP_CR 73 -#define DUK_OP_EXP_RC 74 -#define DUK_OP_EXP_CC 75 -#define DUK_OP_BAND 76 -#define DUK_OP_BAND_RR 76 -#define DUK_OP_BAND_CR 77 -#define DUK_OP_BAND_RC 78 -#define DUK_OP_BAND_CC 79 -#define DUK_OP_BOR 80 -#define DUK_OP_BOR_RR 80 -#define DUK_OP_BOR_CR 81 -#define DUK_OP_BOR_RC 82 -#define DUK_OP_BOR_CC 83 -#define DUK_OP_BXOR 84 -#define DUK_OP_BXOR_RR 84 -#define DUK_OP_BXOR_CR 85 -#define DUK_OP_BXOR_RC 86 -#define DUK_OP_BXOR_CC 87 -#define DUK_OP_BASL 88 -#define DUK_OP_BASL_RR 88 -#define DUK_OP_BASL_CR 89 -#define DUK_OP_BASL_RC 90 -#define DUK_OP_BASL_CC 91 -#define DUK_OP_BLSR 92 -#define DUK_OP_BLSR_RR 92 -#define DUK_OP_BLSR_CR 93 -#define DUK_OP_BLSR_RC 94 -#define DUK_OP_BLSR_CC 95 -#define DUK_OP_BASR 96 -#define DUK_OP_BASR_RR 96 -#define DUK_OP_BASR_CR 97 -#define DUK_OP_BASR_RC 98 -#define DUK_OP_BASR_CC 99 -#define DUK_OP_INSTOF 100 -#define DUK_OP_INSTOF_RR 100 -#define DUK_OP_INSTOF_CR 101 -#define DUK_OP_INSTOF_RC 102 -#define DUK_OP_INSTOF_CC 103 -#define DUK_OP_IN 104 -#define DUK_OP_IN_RR 104 -#define DUK_OP_IN_CR 105 -#define DUK_OP_IN_RC 106 -#define DUK_OP_IN_CC 107 -#define DUK_OP_GETPROP 108 -#define DUK_OP_GETPROP_RR 108 -#define DUK_OP_GETPROP_CR 109 -#define DUK_OP_GETPROP_RC 110 -#define DUK_OP_GETPROP_CC 111 -#define DUK_OP_PUTPROP 112 -#define DUK_OP_PUTPROP_RR 112 -#define DUK_OP_PUTPROP_CR 113 -#define DUK_OP_PUTPROP_RC 114 -#define DUK_OP_PUTPROP_CC 115 -#define DUK_OP_DELPROP 116 -#define DUK_OP_DELPROP_RR 116 -#define DUK_OP_DELPROP_CR_UNUSED 117 /* unused now */ -#define DUK_OP_DELPROP_RC 118 -#define DUK_OP_DELPROP_CC_UNUSED 119 /* unused now */ -#define DUK_OP_PREINCR 120 /* pre/post opcode values have constraints, */ -#define DUK_OP_PREDECR 121 /* see duk_js_executor.c and duk_js_compiler.c. */ -#define DUK_OP_POSTINCR 122 -#define DUK_OP_POSTDECR 123 -#define DUK_OP_PREINCV 124 -#define DUK_OP_PREDECV 125 -#define DUK_OP_POSTINCV 126 -#define DUK_OP_POSTDECV 127 -#define DUK_OP_PREINCP 128 /* pre/post inc/dec prop opcodes have constraints */ -#define DUK_OP_PREINCP_RR 128 -#define DUK_OP_PREINCP_CR 129 -#define DUK_OP_PREINCP_RC 130 -#define DUK_OP_PREINCP_CC 131 -#define DUK_OP_PREDECP 132 -#define DUK_OP_PREDECP_RR 132 -#define DUK_OP_PREDECP_CR 133 -#define DUK_OP_PREDECP_RC 134 -#define DUK_OP_PREDECP_CC 135 -#define DUK_OP_POSTINCP 136 -#define DUK_OP_POSTINCP_RR 136 -#define DUK_OP_POSTINCP_CR 137 -#define DUK_OP_POSTINCP_RC 138 -#define DUK_OP_POSTINCP_CC 139 -#define DUK_OP_POSTDECP 140 -#define DUK_OP_POSTDECP_RR 140 -#define DUK_OP_POSTDECP_CR 141 -#define DUK_OP_POSTDECP_RC 142 -#define DUK_OP_POSTDECP_CC 143 -#define DUK_OP_DECLVAR 144 -#define DUK_OP_DECLVAR_RR 144 -#define DUK_OP_DECLVAR_CR 145 -#define DUK_OP_DECLVAR_RC 146 -#define DUK_OP_DECLVAR_CC 147 -#define DUK_OP_REGEXP 148 -#define DUK_OP_REGEXP_RR 148 -#define DUK_OP_REGEXP_CR 149 -#define DUK_OP_REGEXP_RC 150 -#define DUK_OP_REGEXP_CC 151 -#define DUK_OP_CLOSURE 152 -#define DUK_OP_TYPEOF 153 -#define DUK_OP_TYPEOFID 154 -#define DUK_OP_PUTVAR 155 -#define DUK_OP_DELVAR 156 -#define DUK_OP_RETREG 157 -#define DUK_OP_RETUNDEF 158 -#define DUK_OP_RETCONST 159 -#define DUK_OP_RETCONSTN 160 /* return const without incref (e.g. number) */ -#define DUK_OP_LABEL 161 -#define DUK_OP_ENDLABEL 162 -#define DUK_OP_BREAK 163 -#define DUK_OP_CONTINUE 164 -#define DUK_OP_TRYCATCH 165 -#define DUK_OP_ENDTRY 166 -#define DUK_OP_ENDCATCH 167 -#define DUK_OP_ENDFIN 168 -#define DUK_OP_THROW 169 -#define DUK_OP_INVLHS 170 -#define DUK_OP_CSREG 171 -#define DUK_OP_CSVAR 172 -#define DUK_OP_CSVAR_RR 172 -#define DUK_OP_CSVAR_CR 173 -#define DUK_OP_CSVAR_RC 174 -#define DUK_OP_CSVAR_CC 175 -#define DUK_OP_CALL0 176 /* DUK_OP_CALL0 & 0x0F must be zero. */ -#define DUK_OP_CALL1 177 -#define DUK_OP_CALL2 178 -#define DUK_OP_CALL3 179 -#define DUK_OP_CALL4 180 -#define DUK_OP_CALL5 181 -#define DUK_OP_CALL6 182 -#define DUK_OP_CALL7 183 -#define DUK_OP_CALL8 184 -#define DUK_OP_CALL9 185 -#define DUK_OP_CALL10 186 -#define DUK_OP_CALL11 187 -#define DUK_OP_CALL12 188 -#define DUK_OP_CALL13 189 -#define DUK_OP_CALL14 190 -#define DUK_OP_CALL15 191 -#define DUK_OP_NEWOBJ 192 -#define DUK_OP_NEWARR 193 -#define DUK_OP_MPUTOBJ 194 -#define DUK_OP_MPUTOBJI 195 -#define DUK_OP_INITSET 196 -#define DUK_OP_INITGET 197 -#define DUK_OP_MPUTARR 198 -#define DUK_OP_MPUTARRI 199 -#define DUK_OP_SETALEN 200 -#define DUK_OP_INITENUM 201 -#define DUK_OP_NEXTENUM 202 -#define DUK_OP_NEWTARGET 203 -#define DUK_OP_DEBUGGER 204 -#define DUK_OP_NOP 205 -#define DUK_OP_INVALID 206 -#define DUK_OP_UNUSED207 207 -#define DUK_OP_GETPROPC 208 -#define DUK_OP_GETPROPC_RR 208 -#define DUK_OP_GETPROPC_CR 209 -#define DUK_OP_GETPROPC_RC 210 -#define DUK_OP_GETPROPC_CC 211 -#define DUK_OP_UNUSED212 212 -#define DUK_OP_UNUSED213 213 -#define DUK_OP_UNUSED214 214 -#define DUK_OP_UNUSED215 215 -#define DUK_OP_UNUSED216 216 -#define DUK_OP_UNUSED217 217 -#define DUK_OP_UNUSED218 218 -#define DUK_OP_UNUSED219 219 -#define DUK_OP_UNUSED220 220 -#define DUK_OP_UNUSED221 221 -#define DUK_OP_UNUSED222 222 -#define DUK_OP_UNUSED223 223 -#define DUK_OP_UNUSED224 224 -#define DUK_OP_UNUSED225 225 -#define DUK_OP_UNUSED226 226 -#define DUK_OP_UNUSED227 227 -#define DUK_OP_UNUSED228 228 -#define DUK_OP_UNUSED229 229 -#define DUK_OP_UNUSED230 230 -#define DUK_OP_UNUSED231 231 -#define DUK_OP_UNUSED232 232 -#define DUK_OP_UNUSED233 233 -#define DUK_OP_UNUSED234 234 -#define DUK_OP_UNUSED235 235 -#define DUK_OP_UNUSED236 236 -#define DUK_OP_UNUSED237 237 -#define DUK_OP_UNUSED238 238 -#define DUK_OP_UNUSED239 239 -#define DUK_OP_UNUSED240 240 -#define DUK_OP_UNUSED241 241 -#define DUK_OP_UNUSED242 242 -#define DUK_OP_UNUSED243 243 -#define DUK_OP_UNUSED244 244 -#define DUK_OP_UNUSED245 245 -#define DUK_OP_UNUSED246 246 -#define DUK_OP_UNUSED247 247 -#define DUK_OP_UNUSED248 248 -#define DUK_OP_UNUSED249 249 -#define DUK_OP_UNUSED250 250 -#define DUK_OP_UNUSED251 251 -#define DUK_OP_UNUSED252 252 -#define DUK_OP_UNUSED253 253 -#define DUK_OP_UNUSED254 254 -#define DUK_OP_UNUSED255 255 -#define DUK_OP_NONE 256 /* dummy value used as marker (doesn't fit in 8-bit field) */ - -/* XXX: Allocate flags from opcode field? Would take 16 opcode slots - * but avoids shuffling in more cases. Maybe not worth it. - */ -/* DUK_OP_TRYCATCH flags in A. */ -#define DUK_BC_TRYCATCH_FLAG_HAVE_CATCH (1U << 0) -#define DUK_BC_TRYCATCH_FLAG_HAVE_FINALLY (1U << 1) -#define DUK_BC_TRYCATCH_FLAG_CATCH_BINDING (1U << 2) -#define DUK_BC_TRYCATCH_FLAG_WITH_BINDING (1U << 3) - -/* DUK_OP_DECLVAR flags in A; bottom bits are reserved for propdesc flags - * (DUK_PROPDESC_FLAG_XXX). - */ -#define DUK_BC_DECLVAR_FLAG_FUNC_DECL (1U << 4) /* function declaration */ - -/* DUK_OP_CALLn flags, part of opcode field. Three lowest bits must match - * DUK_CALL_FLAG_xxx directly. - */ -#define DUK_BC_CALL_FLAG_TAILCALL (1U << 0) -#define DUK_BC_CALL_FLAG_CONSTRUCT (1U << 1) -#define DUK_BC_CALL_FLAG_CALLED_AS_EVAL (1U << 2) -#define DUK_BC_CALL_FLAG_INDIRECT (1U << 3) - -/* Misc constants and helper macros. */ -#define DUK_BC_LDINT_BIAS (1L << 15) -#define DUK_BC_LDINTX_SHIFT 16 -#define DUK_BC_JUMP_BIAS (1L << 23) - -#endif /* DUK_JS_BYTECODE_H_INCLUDED */ -/* #include duk_lexer.h */ -#line 1 "duk_lexer.h" -/* - * Lexer defines. - */ - -#if !defined(DUK_LEXER_H_INCLUDED) -#define DUK_LEXER_H_INCLUDED - -typedef void (*duk_re_range_callback)(void *user, duk_codepoint_t r1, duk_codepoint_t r2, duk_bool_t direct); - -/* - * A token is interpreted as any possible production of InputElementDiv - * and InputElementRegExp, see E5 Section 7 in its entirety. Note that - * the E5 "Token" production does not cover all actual tokens of the - * language (which is explicitly stated in the specification, Section 7.5). - * Null and boolean literals are defined as part of both ReservedWord - * (E5 Section 7.6.1) and Literal (E5 Section 7.8) productions. Here, - * null and boolean values have literal tokens, and are not reserved - * words. - * - * Decimal literal negative/positive sign is -not- part of DUK_TOK_NUMBER. - * The number tokens always have a non-negative value. The unary minus - * operator in "-1.0" is optimized during compilation to yield a single - * negative constant. - * - * Token numbering is free except that reserved words are required to be - * in a continuous range and in a particular order. See genstrings.py. - */ - -#define DUK_LEXER_INITCTX(ctx) duk_lexer_initctx((ctx)) - -#define DUK_LEXER_SETPOINT(ctx, pt) duk_lexer_setpoint((ctx), (pt)) - -#define DUK_LEXER_GETPOINT(ctx, pt) duk_lexer_getpoint((ctx), (pt)) - -/* Currently 6 characters of lookup are actually needed (duk_lexer.c). */ -#define DUK_LEXER_WINDOW_SIZE 6 -#if defined(DUK_USE_LEXER_SLIDING_WINDOW) -#define DUK_LEXER_BUFFER_SIZE 64 -#endif - -#define DUK_TOK_MINVAL 0 - -/* returned after EOF (infinite amount) */ -#define DUK_TOK_EOF 0 - -/* identifier names (E5 Section 7.6) */ -#define DUK_TOK_IDENTIFIER 1 - -/* reserved words: keywords */ -#define DUK_TOK_START_RESERVED 2 -#define DUK_TOK_BREAK 2 -#define DUK_TOK_CASE 3 -#define DUK_TOK_CATCH 4 -#define DUK_TOK_CONTINUE 5 -#define DUK_TOK_DEBUGGER 6 -#define DUK_TOK_DEFAULT 7 -#define DUK_TOK_DELETE 8 -#define DUK_TOK_DO 9 -#define DUK_TOK_ELSE 10 -#define DUK_TOK_FINALLY 11 -#define DUK_TOK_FOR 12 -#define DUK_TOK_FUNCTION 13 -#define DUK_TOK_IF 14 -#define DUK_TOK_IN 15 -#define DUK_TOK_INSTANCEOF 16 -#define DUK_TOK_NEW 17 -#define DUK_TOK_RETURN 18 -#define DUK_TOK_SWITCH 19 -#define DUK_TOK_THIS 20 -#define DUK_TOK_THROW 21 -#define DUK_TOK_TRY 22 -#define DUK_TOK_TYPEOF 23 -#define DUK_TOK_VAR 24 -#define DUK_TOK_CONST 25 -#define DUK_TOK_VOID 26 -#define DUK_TOK_WHILE 27 -#define DUK_TOK_WITH 28 - -/* reserved words: future reserved words */ -#define DUK_TOK_CLASS 29 -#define DUK_TOK_ENUM 30 -#define DUK_TOK_EXPORT 31 -#define DUK_TOK_EXTENDS 32 -#define DUK_TOK_IMPORT 33 -#define DUK_TOK_SUPER 34 - -/* "null", "true", and "false" are always reserved words. - * Note that "get" and "set" are not! - */ -#define DUK_TOK_NULL 35 -#define DUK_TOK_TRUE 36 -#define DUK_TOK_FALSE 37 - -/* reserved words: additional future reserved words in strict mode */ -#define DUK_TOK_START_STRICT_RESERVED 38 /* inclusive */ -#define DUK_TOK_IMPLEMENTS 38 -#define DUK_TOK_INTERFACE 39 -#define DUK_TOK_LET 40 -#define DUK_TOK_PACKAGE 41 -#define DUK_TOK_PRIVATE 42 -#define DUK_TOK_PROTECTED 43 -#define DUK_TOK_PUBLIC 44 -#define DUK_TOK_STATIC 45 -#define DUK_TOK_YIELD 46 - -#define DUK_TOK_END_RESERVED 47 /* exclusive */ - -/* "get" and "set" are tokens but NOT ReservedWords. They are currently - * parsed and identifiers and these defines are actually now unused. - */ -#define DUK_TOK_GET 47 -#define DUK_TOK_SET 48 - -/* punctuators (unlike the spec, also includes "/" and "/=") */ -#define DUK_TOK_LCURLY 49 -#define DUK_TOK_RCURLY 50 -#define DUK_TOK_LBRACKET 51 -#define DUK_TOK_RBRACKET 52 -#define DUK_TOK_LPAREN 53 -#define DUK_TOK_RPAREN 54 -#define DUK_TOK_PERIOD 55 -#define DUK_TOK_SEMICOLON 56 -#define DUK_TOK_COMMA 57 -#define DUK_TOK_LT 58 -#define DUK_TOK_GT 59 -#define DUK_TOK_LE 60 -#define DUK_TOK_GE 61 -#define DUK_TOK_EQ 62 -#define DUK_TOK_NEQ 63 -#define DUK_TOK_SEQ 64 -#define DUK_TOK_SNEQ 65 -#define DUK_TOK_ADD 66 -#define DUK_TOK_SUB 67 -#define DUK_TOK_MUL 68 -#define DUK_TOK_DIV 69 -#define DUK_TOK_MOD 70 -#define DUK_TOK_EXP 71 -#define DUK_TOK_INCREMENT 72 -#define DUK_TOK_DECREMENT 73 -#define DUK_TOK_ALSHIFT 74 /* named "arithmetic" because result is signed */ -#define DUK_TOK_ARSHIFT 75 -#define DUK_TOK_RSHIFT 76 -#define DUK_TOK_BAND 77 -#define DUK_TOK_BOR 78 -#define DUK_TOK_BXOR 79 -#define DUK_TOK_LNOT 80 -#define DUK_TOK_BNOT 81 -#define DUK_TOK_LAND 82 -#define DUK_TOK_LOR 83 -#define DUK_TOK_QUESTION 84 -#define DUK_TOK_COLON 85 -#define DUK_TOK_EQUALSIGN 86 -#define DUK_TOK_ADD_EQ 87 -#define DUK_TOK_SUB_EQ 88 -#define DUK_TOK_MUL_EQ 89 -#define DUK_TOK_DIV_EQ 90 -#define DUK_TOK_MOD_EQ 91 -#define DUK_TOK_EXP_EQ 92 -#define DUK_TOK_ALSHIFT_EQ 93 -#define DUK_TOK_ARSHIFT_EQ 94 -#define DUK_TOK_RSHIFT_EQ 95 -#define DUK_TOK_BAND_EQ 96 -#define DUK_TOK_BOR_EQ 97 -#define DUK_TOK_BXOR_EQ 98 - -/* literals (E5 Section 7.8), except null, true, false, which are treated - * like reserved words (above). - */ -#define DUK_TOK_NUMBER 99 -#define DUK_TOK_STRING 100 -#define DUK_TOK_REGEXP 101 - -#define DUK_TOK_MAXVAL 101 /* inclusive */ - -#define DUK_TOK_INVALID DUK_SMALL_UINT_MAX - -/* Convert heap string index to a token (reserved words) */ -#define DUK_STRIDX_TO_TOK(x) ((x) -DUK_STRIDX_START_RESERVED + DUK_TOK_START_RESERVED) - -/* Sanity check */ -#if (DUK_TOK_MAXVAL > 255) -#error DUK_TOK_MAXVAL too large, code assumes it fits into 8 bits -#endif - -/* Sanity checks for string and token defines */ -#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_BREAK) != DUK_TOK_BREAK) -#error mismatch in token defines -#endif -#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_CASE) != DUK_TOK_CASE) -#error mismatch in token defines -#endif -#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_CATCH) != DUK_TOK_CATCH) -#error mismatch in token defines -#endif -#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_CONTINUE) != DUK_TOK_CONTINUE) -#error mismatch in token defines -#endif -#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_DEBUGGER) != DUK_TOK_DEBUGGER) -#error mismatch in token defines -#endif -#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_DEFAULT) != DUK_TOK_DEFAULT) -#error mismatch in token defines -#endif -#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_DELETE) != DUK_TOK_DELETE) -#error mismatch in token defines -#endif -#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_DO) != DUK_TOK_DO) -#error mismatch in token defines -#endif -#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_ELSE) != DUK_TOK_ELSE) -#error mismatch in token defines -#endif -#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_FINALLY) != DUK_TOK_FINALLY) -#error mismatch in token defines -#endif -#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_FOR) != DUK_TOK_FOR) -#error mismatch in token defines -#endif -#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_LC_FUNCTION) != DUK_TOK_FUNCTION) -#error mismatch in token defines -#endif -#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_IF) != DUK_TOK_IF) -#error mismatch in token defines -#endif -#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_IN) != DUK_TOK_IN) -#error mismatch in token defines -#endif -#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_INSTANCEOF) != DUK_TOK_INSTANCEOF) -#error mismatch in token defines -#endif -#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_NEW) != DUK_TOK_NEW) -#error mismatch in token defines -#endif -#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_RETURN) != DUK_TOK_RETURN) -#error mismatch in token defines -#endif -#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_SWITCH) != DUK_TOK_SWITCH) -#error mismatch in token defines -#endif -#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_THIS) != DUK_TOK_THIS) -#error mismatch in token defines -#endif -#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_THROW) != DUK_TOK_THROW) -#error mismatch in token defines -#endif -#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_TRY) != DUK_TOK_TRY) -#error mismatch in token defines -#endif -#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_TYPEOF) != DUK_TOK_TYPEOF) -#error mismatch in token defines -#endif -#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_VAR) != DUK_TOK_VAR) -#error mismatch in token defines -#endif -#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_VOID) != DUK_TOK_VOID) -#error mismatch in token defines -#endif -#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_WHILE) != DUK_TOK_WHILE) -#error mismatch in token defines -#endif -#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_WITH) != DUK_TOK_WITH) -#error mismatch in token defines -#endif -#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_CLASS) != DUK_TOK_CLASS) -#error mismatch in token defines -#endif -#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_CONST) != DUK_TOK_CONST) -#error mismatch in token defines -#endif -#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_ENUM) != DUK_TOK_ENUM) -#error mismatch in token defines -#endif -#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_EXPORT) != DUK_TOK_EXPORT) -#error mismatch in token defines -#endif -#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_EXTENDS) != DUK_TOK_EXTENDS) -#error mismatch in token defines -#endif -#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_IMPORT) != DUK_TOK_IMPORT) -#error mismatch in token defines -#endif -#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_SUPER) != DUK_TOK_SUPER) -#error mismatch in token defines -#endif -#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_LC_NULL) != DUK_TOK_NULL) -#error mismatch in token defines -#endif -#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_TRUE) != DUK_TOK_TRUE) -#error mismatch in token defines -#endif -#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_FALSE) != DUK_TOK_FALSE) -#error mismatch in token defines -#endif -#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_IMPLEMENTS) != DUK_TOK_IMPLEMENTS) -#error mismatch in token defines -#endif -#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_INTERFACE) != DUK_TOK_INTERFACE) -#error mismatch in token defines -#endif -#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_LET) != DUK_TOK_LET) -#error mismatch in token defines -#endif -#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_PACKAGE) != DUK_TOK_PACKAGE) -#error mismatch in token defines -#endif -#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_PRIVATE) != DUK_TOK_PRIVATE) -#error mismatch in token defines -#endif -#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_PROTECTED) != DUK_TOK_PROTECTED) -#error mismatch in token defines -#endif -#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_PUBLIC) != DUK_TOK_PUBLIC) -#error mismatch in token defines -#endif -#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_STATIC) != DUK_TOK_STATIC) -#error mismatch in token defines -#endif -#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_YIELD) != DUK_TOK_YIELD) -#error mismatch in token defines -#endif - -/* Regexp tokens */ -#define DUK_RETOK_EOF 0 -#define DUK_RETOK_DISJUNCTION 1 -#define DUK_RETOK_QUANTIFIER 2 -#define DUK_RETOK_ASSERT_START 3 -#define DUK_RETOK_ASSERT_END 4 -#define DUK_RETOK_ASSERT_WORD_BOUNDARY 5 -#define DUK_RETOK_ASSERT_NOT_WORD_BOUNDARY 6 -#define DUK_RETOK_ASSERT_START_POS_LOOKAHEAD 7 -#define DUK_RETOK_ASSERT_START_NEG_LOOKAHEAD 8 -#define DUK_RETOK_ATOM_PERIOD 9 -#define DUK_RETOK_ATOM_CHAR 10 -#define DUK_RETOK_ATOM_DIGIT 11 /* assumptions in regexp compiler */ -#define DUK_RETOK_ATOM_NOT_DIGIT 12 /* -""- */ -#define DUK_RETOK_ATOM_WHITE 13 /* -""- */ -#define DUK_RETOK_ATOM_NOT_WHITE 14 /* -""- */ -#define DUK_RETOK_ATOM_WORD_CHAR 15 /* -""- */ -#define DUK_RETOK_ATOM_NOT_WORD_CHAR 16 /* -""- */ -#define DUK_RETOK_ATOM_BACKREFERENCE 17 -#define DUK_RETOK_ATOM_START_CAPTURE_GROUP 18 -#define DUK_RETOK_ATOM_START_NONCAPTURE_GROUP 19 -#define DUK_RETOK_ATOM_START_CHARCLASS 20 -#define DUK_RETOK_ATOM_START_CHARCLASS_INVERTED 21 -#define DUK_RETOK_ATOM_END_GROUP 22 - -/* Constants for duk_lexer_ctx.buf. */ -#define DUK_LEXER_TEMP_BUF_LIMIT 256 - -/* A token value. Can be memcpy()'d, but note that slot1/slot2 values are on the valstack. - * Some fields (like num, str1, str2) are only valid for specific token types and may have - * stale values otherwise. - */ -struct duk_token { - duk_small_uint_t t; /* token type (with reserved word identification) */ - duk_small_uint_t t_nores; /* token type (with reserved words as DUK_TOK_IDENTIFER) */ - duk_double_t num; /* numeric value of token */ - duk_hstring *str1; /* string 1 of token (borrowed, stored to ctx->slot1_idx) */ - duk_hstring *str2; /* string 2 of token (borrowed, stored to ctx->slot2_idx) */ - duk_size_t start_offset; /* start byte offset of token in lexer input */ - duk_int_t start_line; /* start line of token (first char) */ - duk_int_t num_escapes; /* number of escapes and line continuations (for directive prologue) */ - duk_bool_t lineterm; /* token was preceded by a lineterm */ - duk_bool_t allow_auto_semi; /* token allows automatic semicolon insertion (eof or preceded by newline) */ -}; - -#define DUK_RE_QUANTIFIER_INFINITE ((duk_uint32_t) 0xffffffffUL) - -/* A regexp token value. */ -struct duk_re_token { - duk_small_uint_t t; /* token type */ - duk_small_uint_t greedy; - duk_uint32_t num; /* numeric value (character, count) */ - duk_uint32_t qmin; - duk_uint32_t qmax; -}; - -/* A structure for 'snapshotting' a point for rewinding */ -struct duk_lexer_point { - duk_size_t offset; - duk_int_t line; -}; - -/* Lexer codepoint with additional info like offset/line number */ -struct duk_lexer_codepoint { - duk_codepoint_t codepoint; - duk_size_t offset; - duk_int_t line; -}; - -/* Lexer context. Same context is used for ECMAScript and Regexp parsing. */ -struct duk_lexer_ctx { -#if defined(DUK_USE_LEXER_SLIDING_WINDOW) - duk_lexer_codepoint *window; /* unicode code points, window[0] is always next, points to 'buffer' */ - duk_lexer_codepoint buffer[DUK_LEXER_BUFFER_SIZE]; -#else - duk_lexer_codepoint window[DUK_LEXER_WINDOW_SIZE]; /* unicode code points, window[0] is always next */ -#endif - - duk_hthread *thr; /* thread; minimizes argument passing */ - - const duk_uint8_t *input; /* input string (may be a user pointer) */ - duk_size_t input_length; /* input byte length */ - duk_size_t input_offset; /* input offset for window leading edge (not window[0]) */ - duk_int_t input_line; /* input linenumber at input_offset (not window[0]), init to 1 */ - - duk_idx_t slot1_idx; /* valstack slot for 1st token value */ - duk_idx_t slot2_idx; /* valstack slot for 2nd token value */ - duk_idx_t buf_idx; /* valstack slot for temp buffer */ - duk_hbuffer_dynamic *buf; /* temp accumulation buffer */ - duk_bufwriter_ctx bw; /* bufwriter for temp accumulation */ - - duk_int_t token_count; /* number of tokens parsed */ - duk_int_t token_limit; /* maximum token count before error (sanity backstop) */ - - duk_small_uint_t flags; /* lexer flags, use compiler flag defines for now */ -}; - -/* - * Prototypes - */ - -DUK_INTERNAL_DECL void duk_lexer_initctx(duk_lexer_ctx *lex_ctx); - -DUK_INTERNAL_DECL void duk_lexer_getpoint(duk_lexer_ctx *lex_ctx, duk_lexer_point *pt); -DUK_INTERNAL_DECL void duk_lexer_setpoint(duk_lexer_ctx *lex_ctx, duk_lexer_point *pt); - -DUK_INTERNAL_DECL -void duk_lexer_parse_js_input_element(duk_lexer_ctx *lex_ctx, duk_token *out_token, duk_bool_t strict_mode, duk_bool_t regexp_mode); -#if defined(DUK_USE_REGEXP_SUPPORT) -DUK_INTERNAL_DECL void duk_lexer_parse_re_token(duk_lexer_ctx *lex_ctx, duk_re_token *out_token); -DUK_INTERNAL_DECL void duk_lexer_parse_re_ranges(duk_lexer_ctx *lex_ctx, duk_re_range_callback gen_range, void *userdata); -#endif /* DUK_USE_REGEXP_SUPPORT */ - -#endif /* DUK_LEXER_H_INCLUDED */ -/* #include duk_js_compiler.h */ -#line 1 "duk_js_compiler.h" -/* - * ECMAScript compiler. - */ - -#if !defined(DUK_JS_COMPILER_H_INCLUDED) -#define DUK_JS_COMPILER_H_INCLUDED - -/* ECMAScript compiler limits */ -#define DUK_COMPILER_TOKEN_LIMIT 100000000L /* 1e8: protects against deeply nested inner functions */ - -/* maximum loopcount for peephole optimization */ -#define DUK_COMPILER_PEEPHOLE_MAXITER 3 - -/* maximum bytecode length in instructions */ -#define DUK_COMPILER_MAX_BYTECODE_LENGTH (256L * 1024L * 1024L) /* 1 GB */ - -/* - * Compiler intermediate values - * - * Intermediate values describe either plain values (e.g. strings or - * numbers) or binary operations which have not yet been coerced into - * either a left-hand-side or right-hand-side role (e.g. object property). - */ - -#define DUK_IVAL_NONE 0 /* no value */ -#define DUK_IVAL_PLAIN 1 /* register, constant, or value */ -#define DUK_IVAL_ARITH 2 /* binary arithmetic; DUK_OP_ADD, DUK_OP_EQ, other binary ops */ -#define DUK_IVAL_PROP 3 /* property access */ -#define DUK_IVAL_VAR 4 /* variable access */ - -#define DUK_ISPEC_NONE 0 /* no value */ -#define DUK_ISPEC_VALUE 1 /* value resides in 'valstack_idx' */ -#define DUK_ISPEC_REGCONST 2 /* value resides in a register or constant */ - -/* Bit mask which indicates that a regconst is a constant instead of a register. - * Chosen so that when a regconst is cast to duk_int32_t, all consts are - * negative values. - */ -#define DUK_REGCONST_CONST_MARKER DUK_INT32_MIN /* = -0x80000000 */ - -/* Type to represent a reg/const reference during compilation, with <0 - * indicating a constant. Some call sites also use -1 to indicate 'none'. - */ -typedef duk_int32_t duk_regconst_t; - -typedef struct { - duk_small_uint_t t; /* DUK_ISPEC_XXX */ - duk_regconst_t regconst; - duk_idx_t valstack_idx; /* always set; points to a reserved valstack slot */ -} duk_ispec; - -typedef struct { - /* - * PLAIN: x1 - * ARITH: x1 x2 - * PROP: x1.x2 - * VAR: x1 (name) - */ - - /* XXX: can be optimized for smaller footprint esp. on 32-bit environments */ - duk_small_uint_t t; /* DUK_IVAL_XXX */ - duk_small_uint_t op; /* bytecode opcode for binary ops */ - duk_ispec x1; - duk_ispec x2; -} duk_ivalue; - -/* - * Bytecode instruction representation during compilation - * - * Contains the actual instruction and (optionally) debug info. - */ - -struct duk_compiler_instr { - duk_instr_t ins; -#if defined(DUK_USE_PC2LINE) - duk_uint32_t line; -#endif -}; - -/* - * Compiler state - */ - -#define DUK_LABEL_FLAG_ALLOW_BREAK (1U << 0) -#define DUK_LABEL_FLAG_ALLOW_CONTINUE (1U << 1) - -#define DUK_DECL_TYPE_VAR 0 -#define DUK_DECL_TYPE_FUNC 1 - -/* XXX: optimize to 16 bytes */ -typedef struct { - duk_small_uint_t flags; - duk_int_t label_id; /* numeric label_id (-1 reserved as marker) */ - duk_hstring *h_label; /* borrowed label name */ - duk_int_t catch_depth; /* catch depth at point of definition */ - duk_int_t pc_label; /* pc of label statement: - * pc+1: break jump site - * pc+2: continue jump site - */ - - /* Fast jumps (which avoid longjmp) jump directly to the jump sites - * which are always known even while the iteration/switch statement - * is still being parsed. A final peephole pass "straightens out" - * the jumps. - */ -} duk_labelinfo; - -/* Compiling state of one function, eventually converted to duk_hcompfunc */ -struct duk_compiler_func { - /* These pointers are at the start of the struct so that they pack - * nicely. Mixing pointers and integer values is bad on some - * platforms (e.g. if int is 32 bits and pointers are 64 bits). - */ - - duk_bufwriter_ctx bw_code; /* bufwriter for code */ - - duk_hstring *h_name; /* function name (borrowed reference), ends up in _name */ - /* h_code: held in bw_code */ - duk_hobject *h_consts; /* array */ - duk_hobject *h_funcs; /* array of function templates: [func1, offset1, line1, func2, offset2, line2] - * offset/line points to closing brace to allow skipping on pass 2 - */ - duk_hobject *h_decls; /* array of declarations: [ name1, val1, name2, val2, ... ] - * valN = (typeN) | (fnum << 8), where fnum is inner func number (0 for vars) - * record function and variable declarations in pass 1 - */ - duk_hobject *h_labelnames; /* array of active label names */ - duk_hbuffer_dynamic *h_labelinfos; /* C array of duk_labelinfo */ - duk_hobject *h_argnames; /* array of formal argument names (-> _Formals) */ - duk_hobject *h_varmap; /* variable map for pass 2 (identifier -> register number or null (unmapped)) */ - - /* Value stack indices for tracking objects. */ - /* code_idx: not needed */ - duk_idx_t consts_idx; - duk_idx_t funcs_idx; - duk_idx_t decls_idx; - duk_idx_t labelnames_idx; - duk_idx_t labelinfos_idx; - duk_idx_t argnames_idx; - duk_idx_t varmap_idx; - - /* Temp reg handling. */ - duk_regconst_t temp_first; /* first register that is a temporary (below: variables) */ - duk_regconst_t temp_next; /* next temporary register to allocate */ - duk_regconst_t temp_max; /* highest value of temp_reg (temp_max - 1 is highest used reg) */ - - /* Shuffle registers if large number of regs/consts. */ - duk_regconst_t shuffle1; - duk_regconst_t shuffle2; - duk_regconst_t shuffle3; - - /* Stats for current expression being parsed. */ - duk_int_t nud_count; - duk_int_t led_count; - duk_int_t paren_level; /* parenthesis count, 0 = top level */ - duk_bool_t expr_lhs; /* expression is left-hand-side compatible */ - duk_bool_t allow_in; /* current paren level allows 'in' token */ - - /* Misc. */ - duk_int_t stmt_next; /* statement id allocation (running counter) */ - duk_int_t label_next; /* label id allocation (running counter) */ - duk_int_t catch_depth; /* catch stack depth */ - duk_int_t with_depth; /* with stack depth (affects identifier lookups) */ - duk_int_t fnum_next; /* inner function numbering */ - duk_int_t num_formals; /* number of formal arguments */ - duk_regconst_t - reg_stmt_value; /* register for writing value of 'non-empty' statements (global or eval code), -1 is marker */ -#if defined(DUK_USE_DEBUGGER_SUPPORT) - duk_int_t min_line; /* XXX: typing (duk_hcompfunc has duk_uint32_t) */ - duk_int_t max_line; -#endif - - /* Status booleans. */ - duk_uint8_t is_function; /* is an actual function (not global/eval code) */ - duk_uint8_t is_eval; /* is eval code */ - duk_uint8_t is_global; /* is global code */ - duk_uint8_t is_namebinding; /* needs a name binding */ - duk_uint8_t is_constructable; /* result is constructable */ - duk_uint8_t is_setget; /* is a setter/getter */ - duk_uint8_t is_strict; /* function is strict */ - duk_uint8_t is_notail; /* function must not be tail called */ - duk_uint8_t in_directive_prologue; /* parsing in "directive prologue", recognize directives */ - duk_uint8_t in_scanning; /* parsing in "scanning" phase (first pass) */ - duk_uint8_t may_direct_eval; /* function may call direct eval */ - duk_uint8_t id_access_arguments; /* function refers to 'arguments' identifier */ - duk_uint8_t id_access_slow; /* function makes one or more slow path accesses that won't match own static variables */ - duk_uint8_t id_access_slow_own; /* function makes one or more slow path accesses that may match own static variables */ - duk_uint8_t is_arguments_shadowed; /* argument/function declaration shadows 'arguments' */ - duk_uint8_t needs_shuffle; /* function needs shuffle registers */ - duk_uint8_t - reject_regexp_in_adv; /* reject RegExp literal on next advance() call; needed for handling IdentifierName productions */ - duk_uint8_t allow_regexp_in_adv; /* allow RegExp literal on next advance() call */ -}; - -struct duk_compiler_ctx { - duk_hthread *thr; - - /* filename being compiled (ends up in functions' '_filename' property) */ - duk_hstring *h_filename; /* borrowed reference */ - - /* lexing (tokenization) state (contains two valstack slot indices) */ - duk_lexer_ctx lex; - - /* current and previous token for parsing */ - duk_token prev_token; - duk_token curr_token; - duk_idx_t tok11_idx; /* curr_token slot1 (matches 'lex' slot1_idx) */ - duk_idx_t tok12_idx; /* curr_token slot2 (matches 'lex' slot2_idx) */ - duk_idx_t tok21_idx; /* prev_token slot1 */ - duk_idx_t tok22_idx; /* prev_token slot2 */ - - /* recursion limit */ - duk_int_t recursion_depth; - duk_int_t recursion_limit; - - /* code emission temporary */ - duk_int_t emit_jumpslot_pc; - - /* current function being compiled (embedded instead of pointer for more compact access) */ - duk_compiler_func curr_func; -}; - -/* - * Prototypes - */ - -DUK_INTERNAL_DECL void duk_js_compile(duk_hthread *thr, - const duk_uint8_t *src_buffer, - duk_size_t src_length, - duk_small_uint_t flags); - -#endif /* DUK_JS_COMPILER_H_INCLUDED */ -/* #include duk_regexp.h */ -#line 1 "duk_regexp.h" -/* - * Regular expression structs, constants, and bytecode defines. - */ - -#if !defined(DUK_REGEXP_H_INCLUDED) -#define DUK_REGEXP_H_INCLUDED - -/* maximum bytecode copies for {n,m} quantifiers */ -#define DUK_RE_MAX_ATOM_COPIES 1000 - -/* regexp compilation limits */ -#define DUK_RE_COMPILE_TOKEN_LIMIT 100000000L /* 1e8 */ - -/* regexp execution limits */ -#define DUK_RE_EXECUTE_STEPS_LIMIT 1000000000L /* 1e9 */ - -/* regexp opcodes */ -#define DUK_REOP_MATCH 1 -#define DUK_REOP_CHAR 2 -#define DUK_REOP_PERIOD 3 -#define DUK_REOP_RANGES 4 -#define DUK_REOP_INVRANGES 5 -#define DUK_REOP_JUMP 6 -#define DUK_REOP_SPLIT1 7 -#define DUK_REOP_SPLIT2 8 -#define DUK_REOP_SQMINIMAL 9 -#define DUK_REOP_SQGREEDY 10 -#define DUK_REOP_SAVE 11 -#define DUK_REOP_WIPERANGE 12 -#define DUK_REOP_LOOKPOS 13 -#define DUK_REOP_LOOKNEG 14 -#define DUK_REOP_BACKREFERENCE 15 -#define DUK_REOP_ASSERT_START 16 -#define DUK_REOP_ASSERT_END 17 -#define DUK_REOP_ASSERT_WORD_BOUNDARY 18 -#define DUK_REOP_ASSERT_NOT_WORD_BOUNDARY 19 - -/* flags */ -#define DUK_RE_FLAG_GLOBAL (1U << 0) -#define DUK_RE_FLAG_IGNORE_CASE (1U << 1) -#define DUK_RE_FLAG_MULTILINE (1U << 2) - -struct duk_re_matcher_ctx { - duk_hthread *thr; - - duk_uint32_t re_flags; - const duk_uint8_t *input; - const duk_uint8_t *input_end; - const duk_uint8_t *bytecode; - const duk_uint8_t *bytecode_end; - const duk_uint8_t **saved; /* allocated from valstack (fixed buffer) */ - duk_uint32_t nsaved; - duk_uint32_t recursion_depth; - duk_uint32_t recursion_limit; - duk_uint32_t steps_count; - duk_uint32_t steps_limit; -}; - -struct duk_re_compiler_ctx { - duk_hthread *thr; - - duk_uint32_t re_flags; - duk_lexer_ctx lex; - duk_re_token curr_token; - duk_bufwriter_ctx bw; - duk_uint32_t captures; /* highest capture number emitted so far (used as: ++captures) */ - duk_uint32_t highest_backref; - duk_uint32_t recursion_depth; - duk_uint32_t recursion_limit; - duk_uint32_t nranges; /* internal temporary value, used for char classes */ -}; - -/* - * Prototypes - */ - -#if defined(DUK_USE_REGEXP_SUPPORT) -DUK_INTERNAL_DECL void duk_regexp_compile(duk_hthread *thr); -DUK_INTERNAL_DECL void duk_regexp_create_instance(duk_hthread *thr); -DUK_INTERNAL_DECL void duk_regexp_match(duk_hthread *thr); -DUK_INTERNAL_DECL void duk_regexp_match_force_global(duk_hthread *thr); /* hacky helper for String.prototype.split() */ -#endif - -#endif /* DUK_REGEXP_H_INCLUDED */ -/* #include duk_heaphdr.h */ -#line 1 "duk_heaphdr.h" -/* - * Heap header definition and assorted macros, including ref counting. - * Access all fields through the accessor macros. - */ - -#if !defined(DUK_HEAPHDR_H_INCLUDED) -#define DUK_HEAPHDR_H_INCLUDED - -/* - * Common heap header - * - * All heap objects share the same flags and refcount fields. Objects other - * than strings also need to have a single or double linked list pointers - * for insertion into the "heap allocated" list. Strings have single linked - * list pointers for string table chaining. - * - * Technically, 'h_refcount' must be wide enough to guarantee that it cannot - * wrap; otherwise objects might be freed incorrectly after wrapping. The - * default refcount field is 32 bits even on 64-bit systems: while that's in - * theory incorrect, the Duktape heap needs to be larger than 64GB for the - * count to actually wrap (assuming 16-byte duk_tvals). This is very unlikely - * to ever be an issue, but if it is, disabling DUK_USE_REFCOUNT32 causes - * Duktape to use size_t for refcounts which should always be safe. - * - * Heap header size on 32-bit platforms: 8 bytes without reference counting, - * 16 bytes with reference counting. - * - * Note that 'raw' macros such as DUK_HEAPHDR_GET_REFCOUNT() are not - * defined without DUK_USE_REFERENCE_COUNTING, so caller must #if defined() - * around them. - */ - -/* XXX: macro for shared header fields (avoids some padding issues) */ - -struct duk_heaphdr { - duk_uint32_t h_flags; - -#if defined(DUK_USE_REFERENCE_COUNTING) -#if defined(DUK_USE_ASSERTIONS) - /* When assertions enabled, used by mark-and-sweep for refcount - * validation. Largest reasonable type; also detects overflows. - */ - duk_size_t h_assert_refcount; -#endif -#if defined(DUK_USE_REFCOUNT16) - duk_uint16_t h_refcount; -#elif defined(DUK_USE_REFCOUNT32) - duk_uint32_t h_refcount; -#else - duk_size_t h_refcount; -#endif -#endif /* DUK_USE_REFERENCE_COUNTING */ - -#if defined(DUK_USE_HEAPPTR16) - duk_uint16_t h_next16; -#else - duk_heaphdr *h_next; -#endif - -#if defined(DUK_USE_DOUBLE_LINKED_HEAP) - /* refcounting requires direct heap frees, which in turn requires a dual linked heap */ -#if defined(DUK_USE_HEAPPTR16) - duk_uint16_t h_prev16; -#else - duk_heaphdr *h_prev; -#endif -#endif - - /* When DUK_USE_HEAPPTR16 (and DUK_USE_REFCOUNT16) is in use, the - * struct won't align nicely to 4 bytes. This 16-bit extra field - * is added to make the alignment clean; the field can be used by - * heap objects when 16-bit packing is used. This field is now - * conditional to DUK_USE_HEAPPTR16 only, but it is intended to be - * used with DUK_USE_REFCOUNT16 and DUK_USE_DOUBLE_LINKED_HEAP; - * this only matter to low memory environments anyway. - */ -#if defined(DUK_USE_HEAPPTR16) - duk_uint16_t h_extra16; -#endif -}; - -struct duk_heaphdr_string { - /* 16 bits would be enough for shared heaphdr flags and duk_hstring - * flags. The initial parts of duk_heaphdr_string and duk_heaphdr - * must match so changing the flags field size here would be quite - * awkward. However, to minimize struct size, we can pack at least - * 16 bits of duk_hstring data into the flags field. - */ - duk_uint32_t h_flags; - -#if defined(DUK_USE_REFERENCE_COUNTING) -#if defined(DUK_USE_ASSERTIONS) - /* When assertions enabled, used by mark-and-sweep for refcount - * validation. Largest reasonable type; also detects overflows. - */ - duk_size_t h_assert_refcount; -#endif -#if defined(DUK_USE_REFCOUNT16) - duk_uint16_t h_refcount; - duk_uint16_t h_strextra16; /* round out to 8 bytes */ -#elif defined(DUK_USE_REFCOUNT32) - duk_uint32_t h_refcount; -#else - duk_size_t h_refcount; -#endif -#else - duk_uint16_t h_strextra16; -#endif /* DUK_USE_REFERENCE_COUNTING */ - - duk_hstring *h_next; - /* No 'h_prev' pointer for strings. */ -}; - -#define DUK_HEAPHDR_FLAGS_TYPE_MASK 0x00000003UL -#define DUK_HEAPHDR_FLAGS_FLAG_MASK (~DUK_HEAPHDR_FLAGS_TYPE_MASK) - -/* 2 bits for heap type */ -#define DUK_HEAPHDR_FLAGS_HEAP_START 2 /* 5 heap flags */ -#define DUK_HEAPHDR_FLAGS_USER_START 7 /* 25 user flags */ - -#define DUK_HEAPHDR_HEAP_FLAG_NUMBER(n) (DUK_HEAPHDR_FLAGS_HEAP_START + (n)) -#define DUK_HEAPHDR_USER_FLAG_NUMBER(n) (DUK_HEAPHDR_FLAGS_USER_START + (n)) -#define DUK_HEAPHDR_HEAP_FLAG(n) (1UL << (DUK_HEAPHDR_FLAGS_HEAP_START + (n))) -#define DUK_HEAPHDR_USER_FLAG(n) (1UL << (DUK_HEAPHDR_FLAGS_USER_START + (n))) - -#define DUK_HEAPHDR_FLAG_REACHABLE DUK_HEAPHDR_HEAP_FLAG(0) /* mark-and-sweep: reachable */ -#define DUK_HEAPHDR_FLAG_TEMPROOT DUK_HEAPHDR_HEAP_FLAG(1) /* mark-and-sweep: children not processed */ -#define DUK_HEAPHDR_FLAG_FINALIZABLE DUK_HEAPHDR_HEAP_FLAG(2) /* mark-and-sweep: finalizable (on current pass) */ -#define DUK_HEAPHDR_FLAG_FINALIZED DUK_HEAPHDR_HEAP_FLAG(3) /* mark-and-sweep: finalized (on previous pass) */ -#define DUK_HEAPHDR_FLAG_READONLY DUK_HEAPHDR_HEAP_FLAG(4) /* read-only object, in code section */ - -#define DUK_HTYPE_MIN 0 -#define DUK_HTYPE_STRING 0 -#define DUK_HTYPE_OBJECT 1 -#define DUK_HTYPE_BUFFER 2 -#define DUK_HTYPE_MAX 2 - -#if defined(DUK_USE_HEAPPTR16) -#define DUK_HEAPHDR_GET_NEXT(heap, h) ((duk_heaphdr *) DUK_USE_HEAPPTR_DEC16((heap)->heap_udata, (h)->h_next16)) -#define DUK_HEAPHDR_SET_NEXT(heap, h, val) \ - do { \ - (h)->h_next16 = DUK_USE_HEAPPTR_ENC16((heap)->heap_udata, (void *) val); \ - } while (0) -#else -#define DUK_HEAPHDR_GET_NEXT(heap, h) ((h)->h_next) -#define DUK_HEAPHDR_SET_NEXT(heap, h, val) \ - do { \ - (h)->h_next = (val); \ - } while (0) -#endif - -#if defined(DUK_USE_DOUBLE_LINKED_HEAP) -#if defined(DUK_USE_HEAPPTR16) -#define DUK_HEAPHDR_GET_PREV(heap, h) ((duk_heaphdr *) DUK_USE_HEAPPTR_DEC16((heap)->heap_udata, (h)->h_prev16)) -#define DUK_HEAPHDR_SET_PREV(heap, h, val) \ - do { \ - (h)->h_prev16 = DUK_USE_HEAPPTR_ENC16((heap)->heap_udata, (void *) (val)); \ - } while (0) -#else -#define DUK_HEAPHDR_GET_PREV(heap, h) ((h)->h_prev) -#define DUK_HEAPHDR_SET_PREV(heap, h, val) \ - do { \ - (h)->h_prev = (val); \ - } while (0) -#endif -#endif - -#if defined(DUK_USE_REFERENCE_COUNTING) -#define DUK_HEAPHDR_GET_REFCOUNT(h) ((h)->h_refcount) -#define DUK_HEAPHDR_SET_REFCOUNT(h, val) \ - do { \ - (h)->h_refcount = (val); \ - DUK_ASSERT((h)->h_refcount == (val)); /* No truncation. */ \ - } while (0) -#define DUK_HEAPHDR_PREINC_REFCOUNT(h) (++(h)->h_refcount) /* result: updated refcount */ -#define DUK_HEAPHDR_PREDEC_REFCOUNT(h) (--(h)->h_refcount) /* result: updated refcount */ -#else -/* refcount macros not defined without refcounting, caller must #if defined() now */ -#endif /* DUK_USE_REFERENCE_COUNTING */ - -/* - * Note: type is treated as a field separate from flags, so some masking is - * involved in the macros below. - */ - -#define DUK_HEAPHDR_GET_FLAGS_RAW(h) ((h)->h_flags) -#define DUK_HEAPHDR_SET_FLAGS_RAW(h, val) \ - do { \ - (h)->h_flags = (val); \ - } \ - } -#define DUK_HEAPHDR_GET_FLAGS(h) ((h)->h_flags & DUK_HEAPHDR_FLAGS_FLAG_MASK) -#define DUK_HEAPHDR_SET_FLAGS(h, val) \ - do { \ - (h)->h_flags = ((h)->h_flags & ~(DUK_HEAPHDR_FLAGS_FLAG_MASK)) | (val); \ - } while (0) -#define DUK_HEAPHDR_GET_TYPE(h) ((h)->h_flags & DUK_HEAPHDR_FLAGS_TYPE_MASK) -#define DUK_HEAPHDR_SET_TYPE(h, val) \ - do { \ - (h)->h_flags = ((h)->h_flags & ~(DUK_HEAPHDR_FLAGS_TYPE_MASK)) | (val); \ - } while (0) - -/* Comparison for type >= DUK_HTYPE_MIN skipped; because DUK_HTYPE_MIN is zero - * and the comparison is unsigned, it's always true and generates warnings. - */ -#define DUK_HEAPHDR_HTYPE_VALID(h) (DUK_HEAPHDR_GET_TYPE((h)) <= DUK_HTYPE_MAX) - -#define DUK_HEAPHDR_SET_TYPE_AND_FLAGS(h, tval, fval) \ - do { \ - (h)->h_flags = ((tval) &DUK_HEAPHDR_FLAGS_TYPE_MASK) | ((fval) &DUK_HEAPHDR_FLAGS_FLAG_MASK); \ - } while (0) - -#define DUK_HEAPHDR_SET_FLAG_BITS(h, bits) \ - do { \ - DUK_ASSERT(((bits) & ~(DUK_HEAPHDR_FLAGS_FLAG_MASK)) == 0); \ - (h)->h_flags |= (bits); \ - } while (0) - -#define DUK_HEAPHDR_CLEAR_FLAG_BITS(h, bits) \ - do { \ - DUK_ASSERT(((bits) & ~(DUK_HEAPHDR_FLAGS_FLAG_MASK)) == 0); \ - (h)->h_flags &= ~((bits)); \ - } while (0) - -#define DUK_HEAPHDR_CHECK_FLAG_BITS(h, bits) (((h)->h_flags & (bits)) != 0) - -#define DUK_HEAPHDR_SET_REACHABLE(h) DUK_HEAPHDR_SET_FLAG_BITS((h), DUK_HEAPHDR_FLAG_REACHABLE) -#define DUK_HEAPHDR_CLEAR_REACHABLE(h) DUK_HEAPHDR_CLEAR_FLAG_BITS((h), DUK_HEAPHDR_FLAG_REACHABLE) -#define DUK_HEAPHDR_HAS_REACHABLE(h) DUK_HEAPHDR_CHECK_FLAG_BITS((h), DUK_HEAPHDR_FLAG_REACHABLE) - -#define DUK_HEAPHDR_SET_TEMPROOT(h) DUK_HEAPHDR_SET_FLAG_BITS((h), DUK_HEAPHDR_FLAG_TEMPROOT) -#define DUK_HEAPHDR_CLEAR_TEMPROOT(h) DUK_HEAPHDR_CLEAR_FLAG_BITS((h), DUK_HEAPHDR_FLAG_TEMPROOT) -#define DUK_HEAPHDR_HAS_TEMPROOT(h) DUK_HEAPHDR_CHECK_FLAG_BITS((h), DUK_HEAPHDR_FLAG_TEMPROOT) - -#define DUK_HEAPHDR_SET_FINALIZABLE(h) DUK_HEAPHDR_SET_FLAG_BITS((h), DUK_HEAPHDR_FLAG_FINALIZABLE) -#define DUK_HEAPHDR_CLEAR_FINALIZABLE(h) DUK_HEAPHDR_CLEAR_FLAG_BITS((h), DUK_HEAPHDR_FLAG_FINALIZABLE) -#define DUK_HEAPHDR_HAS_FINALIZABLE(h) DUK_HEAPHDR_CHECK_FLAG_BITS((h), DUK_HEAPHDR_FLAG_FINALIZABLE) - -#define DUK_HEAPHDR_SET_FINALIZED(h) DUK_HEAPHDR_SET_FLAG_BITS((h), DUK_HEAPHDR_FLAG_FINALIZED) -#define DUK_HEAPHDR_CLEAR_FINALIZED(h) DUK_HEAPHDR_CLEAR_FLAG_BITS((h), DUK_HEAPHDR_FLAG_FINALIZED) -#define DUK_HEAPHDR_HAS_FINALIZED(h) DUK_HEAPHDR_CHECK_FLAG_BITS((h), DUK_HEAPHDR_FLAG_FINALIZED) - -#define DUK_HEAPHDR_SET_READONLY(h) DUK_HEAPHDR_SET_FLAG_BITS((h), DUK_HEAPHDR_FLAG_READONLY) -#define DUK_HEAPHDR_CLEAR_READONLY(h) DUK_HEAPHDR_CLEAR_FLAG_BITS((h), DUK_HEAPHDR_FLAG_READONLY) -#define DUK_HEAPHDR_HAS_READONLY(h) DUK_HEAPHDR_CHECK_FLAG_BITS((h), DUK_HEAPHDR_FLAG_READONLY) - -/* get or set a range of flags; m=first bit number, n=number of bits */ -#define DUK_HEAPHDR_GET_FLAG_RANGE(h, m, n) (((h)->h_flags >> (m)) & ((1UL << (n)) - 1UL)) - -#define DUK_HEAPHDR_SET_FLAG_RANGE(h, m, n, v) \ - do { \ - (h)->h_flags = ((h)->h_flags & (~(((1UL << (n)) - 1UL) << (m)))) | ((v) << (m)); \ - } while (0) - -/* init pointer fields to null */ -#if defined(DUK_USE_DOUBLE_LINKED_HEAP) -#define DUK_HEAPHDR_INIT_NULLS(h) \ - do { \ - DUK_HEAPHDR_SET_NEXT((h), (void *) NULL); \ - DUK_HEAPHDR_SET_PREV((h), (void *) NULL); \ - } while (0) -#else -#define DUK_HEAPHDR_INIT_NULLS(h) \ - do { \ - DUK_HEAPHDR_SET_NEXT((h), (void *) NULL); \ - } while (0) -#endif - -#define DUK_HEAPHDR_STRING_INIT_NULLS(h) \ - do { \ - (h)->h_next = NULL; \ - } while (0) - -/* - * Type tests - */ - -/* Take advantage of the fact that for DUK_HTYPE_xxx numbers the lowest bit - * is only set for DUK_HTYPE_OBJECT (= 1). - */ -#if 0 -#define DUK_HEAPHDR_IS_OBJECT(h) (DUK_HEAPHDR_GET_TYPE((h)) == DUK_HTYPE_OBJECT) -#endif -#define DUK_HEAPHDR_IS_OBJECT(h) ((h)->h_flags & 0x01UL) -#define DUK_HEAPHDR_IS_STRING(h) (DUK_HEAPHDR_GET_TYPE((h)) == DUK_HTYPE_STRING) -#define DUK_HEAPHDR_IS_BUFFER(h) (DUK_HEAPHDR_GET_TYPE((h)) == DUK_HTYPE_BUFFER) - -/* - * Assert helpers - */ - -/* Check that prev/next links are consistent: if e.g. h->prev is != NULL, - * h->prev->next should point back to h. - */ -#if defined(DUK_USE_ASSERTIONS) -DUK_INTERNAL_DECL void duk_heaphdr_assert_valid_subclassed(duk_heaphdr *h); -DUK_INTERNAL_DECL void duk_heaphdr_assert_links(duk_heap *heap, duk_heaphdr *h); -DUK_INTERNAL_DECL void duk_heaphdr_assert_valid(duk_heaphdr *h); -#define DUK_HEAPHDR_ASSERT_LINKS(heap, h) \ - do { \ - duk_heaphdr_assert_links((heap), (h)); \ - } while (0) -#define DUK_HEAPHDR_ASSERT_VALID(h) \ - do { \ - duk_heaphdr_assert_valid((h)); \ - } while (0) -#else -#define DUK_HEAPHDR_ASSERT_LINKS(heap, h) \ - do { \ - } while (0) -#define DUK_HEAPHDR_ASSERT_VALID(h) \ - do { \ - } while (0) -#endif - -#endif /* DUK_HEAPHDR_H_INCLUDED */ -/* #include duk_refcount.h */ -#line 1 "duk_refcount.h" -/* - * Reference counting helper macros. The macros take a thread argument - * and must thus always be executed in a specific thread context. The - * thread argument is not really needed anymore: DECREF can operate with - * a heap pointer only, and INCREF needs neither. - */ - -#if !defined(DUK_REFCOUNT_H_INCLUDED) -#define DUK_REFCOUNT_H_INCLUDED - -#if defined(DUK_USE_REFERENCE_COUNTING) - -#if defined(DUK_USE_ROM_OBJECTS) -/* With ROM objects "needs refcount update" is true when the value is - * heap allocated and is not a ROM object. - */ -/* XXX: double evaluation for 'tv' argument. */ -#define DUK_TVAL_NEEDS_REFCOUNT_UPDATE(tv) \ - (DUK_TVAL_IS_HEAP_ALLOCATED((tv)) && !DUK_HEAPHDR_HAS_READONLY(DUK_TVAL_GET_HEAPHDR((tv)))) -#define DUK_HEAPHDR_NEEDS_REFCOUNT_UPDATE(h) (!DUK_HEAPHDR_HAS_READONLY((h))) -#else /* DUK_USE_ROM_OBJECTS */ -/* Without ROM objects "needs refcount update" == is heap allocated. */ -#define DUK_TVAL_NEEDS_REFCOUNT_UPDATE(tv) DUK_TVAL_IS_HEAP_ALLOCATED((tv)) -#define DUK_HEAPHDR_NEEDS_REFCOUNT_UPDATE(h) 1 -#endif /* DUK_USE_ROM_OBJECTS */ - -/* Fast variants, inline refcount operations except for refzero handling. - * Can be used explicitly when speed is always more important than size. - * For a good compiler and a single file build, these are basically the - * same as a forced inline. - */ -#define DUK_TVAL_INCREF_FAST(thr, tv) \ - do { \ - duk_tval *duk__tv = (tv); \ - DUK_ASSERT(duk__tv != NULL); \ - if (DUK_TVAL_NEEDS_REFCOUNT_UPDATE(duk__tv)) { \ - duk_heaphdr *duk__h = DUK_TVAL_GET_HEAPHDR(duk__tv); \ - DUK_ASSERT(duk__h != NULL); \ - DUK_ASSERT(DUK_HEAPHDR_HTYPE_VALID(duk__h)); \ - DUK_HEAPHDR_PREINC_REFCOUNT(duk__h); \ - DUK_ASSERT(DUK_HEAPHDR_GET_REFCOUNT(duk__h) != 0); /* No wrapping. */ \ - } \ - } while (0) -#define DUK_TVAL_DECREF_FAST(thr, tv) \ - do { \ - duk_tval *duk__tv = (tv); \ - DUK_ASSERT(duk__tv != NULL); \ - if (DUK_TVAL_NEEDS_REFCOUNT_UPDATE(duk__tv)) { \ - duk_heaphdr *duk__h = DUK_TVAL_GET_HEAPHDR(duk__tv); \ - DUK_ASSERT(duk__h != NULL); \ - DUK_ASSERT(DUK_HEAPHDR_HTYPE_VALID(duk__h)); \ - DUK_ASSERT(DUK_HEAPHDR_GET_REFCOUNT(duk__h) > 0); \ - if (DUK_HEAPHDR_PREDEC_REFCOUNT(duk__h) == 0) { \ - duk_heaphdr_refzero((thr), duk__h); \ - } \ - } \ - } while (0) -#define DUK_TVAL_DECREF_NORZ_FAST(thr, tv) \ - do { \ - duk_tval *duk__tv = (tv); \ - DUK_ASSERT(duk__tv != NULL); \ - if (DUK_TVAL_NEEDS_REFCOUNT_UPDATE(duk__tv)) { \ - duk_heaphdr *duk__h = DUK_TVAL_GET_HEAPHDR(duk__tv); \ - DUK_ASSERT(duk__h != NULL); \ - DUK_ASSERT(DUK_HEAPHDR_HTYPE_VALID(duk__h)); \ - DUK_ASSERT(DUK_HEAPHDR_GET_REFCOUNT(duk__h) > 0); \ - if (DUK_HEAPHDR_PREDEC_REFCOUNT(duk__h) == 0) { \ - duk_heaphdr_refzero_norz((thr), duk__h); \ - } \ - } \ - } while (0) -#define DUK_HEAPHDR_INCREF_FAST(thr, h) \ - do { \ - duk_heaphdr *duk__h = (duk_heaphdr *) (h); \ - DUK_ASSERT(duk__h != NULL); \ - DUK_ASSERT(DUK_HEAPHDR_HTYPE_VALID(duk__h)); \ - if (DUK_HEAPHDR_NEEDS_REFCOUNT_UPDATE(duk__h)) { \ - DUK_HEAPHDR_PREINC_REFCOUNT(duk__h); \ - DUK_ASSERT(DUK_HEAPHDR_GET_REFCOUNT(duk__h) != 0); /* No wrapping. */ \ - } \ - } while (0) -#define DUK_HEAPHDR_DECREF_FAST_RAW(thr, h, rzcall, rzcast) \ - do { \ - duk_heaphdr *duk__h = (duk_heaphdr *) (h); \ - DUK_ASSERT(duk__h != NULL); \ - DUK_ASSERT(DUK_HEAPHDR_HTYPE_VALID(duk__h)); \ - DUK_ASSERT(DUK_HEAPHDR_GET_REFCOUNT(duk__h) > 0); \ - if (DUK_HEAPHDR_NEEDS_REFCOUNT_UPDATE(duk__h)) { \ - if (DUK_HEAPHDR_PREDEC_REFCOUNT(duk__h) == 0) { \ - (rzcall)((thr), (rzcast) duk__h); \ - } \ - } \ - } while (0) -#define DUK_HEAPHDR_DECREF_FAST(thr, h) DUK_HEAPHDR_DECREF_FAST_RAW((thr), (h), duk_heaphdr_refzero, duk_heaphdr *) -#define DUK_HEAPHDR_DECREF_NORZ_FAST(thr, h) DUK_HEAPHDR_DECREF_FAST_RAW((thr), (h), duk_heaphdr_refzero_norz, duk_heaphdr *) - -/* Slow variants, call to a helper to reduce code size. - * Can be used explicitly when size is always more important than speed. - */ -#define DUK_TVAL_INCREF_SLOW(thr, tv) \ - do { \ - duk_tval_incref((tv)); \ - } while (0) -#define DUK_TVAL_DECREF_SLOW(thr, tv) \ - do { \ - duk_tval_decref((thr), (tv)); \ - } while (0) -#define DUK_TVAL_DECREF_NORZ_SLOW(thr, tv) \ - do { \ - duk_tval_decref_norz((thr), (tv)); \ - } while (0) -#define DUK_HEAPHDR_INCREF_SLOW(thr, h) \ - do { \ - duk_heaphdr_incref((duk_heaphdr *) (h)); \ - } while (0) -#define DUK_HEAPHDR_DECREF_SLOW(thr, h) \ - do { \ - duk_heaphdr_decref((thr), (duk_heaphdr *) (h)); \ - } while (0) -#define DUK_HEAPHDR_DECREF_NORZ_SLOW(thr, h) \ - do { \ - duk_heaphdr_decref_norz((thr), (duk_heaphdr *) (h)); \ - } while (0) -#define DUK_HSTRING_INCREF_SLOW(thr, h) \ - do { \ - duk_heaphdr_incref((duk_heaphdr *) (h)); \ - } while (0) -#define DUK_HSTRING_DECREF_SLOW(thr, h) \ - do { \ - duk_heaphdr_decref((thr), (duk_heaphdr *) (h)); \ - } while (0) -#define DUK_HSTRING_DECREF_NORZ_SLOW(thr, h) \ - do { \ - duk_heaphdr_decref_norz((thr), (duk_heaphdr *) (h)); \ - } while (0) -#define DUK_HBUFFER_INCREF_SLOW(thr, h) \ - do { \ - duk_heaphdr_incref((duk_heaphdr *) (h)); \ - } while (0) -#define DUK_HBUFFER_DECREF_SLOW(thr, h) \ - do { \ - duk_heaphdr_decref((thr), (duk_heaphdr *) (h)); \ - } while (0) -#define DUK_HBUFFER_DECREF_NORZ_SLOW(thr, h) \ - do { \ - duk_heaphdr_decref_norz((thr), (duk_heaphdr *) (h)); \ - } while (0) -#define DUK_HOBJECT_INCREF_SLOW(thr, h) \ - do { \ - duk_heaphdr_incref((duk_heaphdr *) (h)); \ - } while (0) -#define DUK_HOBJECT_DECREF_SLOW(thr, h) \ - do { \ - duk_heaphdr_decref((thr), (duk_heaphdr *) (h)); \ - } while (0) -#define DUK_HOBJECT_DECREF_NORZ_SLOW(thr, h) \ - do { \ - duk_heaphdr_decref_norz((thr), (duk_heaphdr *) (h)); \ - } while (0) - -/* Default variants. Selection depends on speed/size preference. - * Concretely: with gcc 4.8.1 -Os x64 the difference in final binary - * is about +1kB for _FAST variants. - */ -#if defined(DUK_USE_FAST_REFCOUNT_DEFAULT) -/* XXX: It would be nice to specialize for specific duk_hobject subtypes - * but current refzero queue handling prevents that. - */ -#define DUK_TVAL_INCREF(thr, tv) DUK_TVAL_INCREF_FAST((thr), (tv)) -#define DUK_TVAL_DECREF(thr, tv) DUK_TVAL_DECREF_FAST((thr), (tv)) -#define DUK_TVAL_DECREF_NORZ(thr, tv) DUK_TVAL_DECREF_NORZ_FAST((thr), (tv)) -#define DUK_HEAPHDR_INCREF(thr, h) DUK_HEAPHDR_INCREF_FAST((thr), (h)) -#define DUK_HEAPHDR_DECREF(thr, h) DUK_HEAPHDR_DECREF_FAST_RAW((thr), (h), duk_heaphdr_refzero, duk_heaphdr *) -#define DUK_HEAPHDR_DECREF_NORZ(thr, h) DUK_HEAPHDR_DECREF_FAST_RAW((thr), (h), duk_heaphdr_refzero_norz, duk_heaphdr *) -#define DUK_HSTRING_INCREF(thr, h) DUK_HEAPHDR_INCREF((thr), (duk_heaphdr *) (h)) -#define DUK_HSTRING_DECREF(thr, h) DUK_HEAPHDR_DECREF_FAST_RAW((thr), (h), duk_hstring_refzero, duk_hstring *) -#define DUK_HSTRING_DECREF_NORZ(thr, h) \ - DUK_HEAPHDR_DECREF_FAST_RAW((thr), (h), duk_hstring_refzero, duk_hstring *) /* no 'norz' variant */ -#define DUK_HOBJECT_INCREF(thr, h) DUK_HEAPHDR_INCREF((thr), (duk_heaphdr *) (h)) -#define DUK_HOBJECT_DECREF(thr, h) DUK_HEAPHDR_DECREF_FAST_RAW((thr), (h), duk_hobject_refzero, duk_hobject *) -#define DUK_HOBJECT_DECREF_NORZ(thr, h) DUK_HEAPHDR_DECREF_FAST_RAW((thr), (h), duk_hobject_refzero_norz, duk_hobject *) -#define DUK_HBUFFER_INCREF(thr, h) DUK_HEAPHDR_INCREF((thr), (duk_heaphdr *) (h)) -#define DUK_HBUFFER_DECREF(thr, h) DUK_HEAPHDR_DECREF_FAST_RAW((thr), (h), duk_hbuffer_refzero, duk_hbuffer *) -#define DUK_HBUFFER_DECREF_NORZ(thr, h) \ - DUK_HEAPHDR_DECREF_FAST_RAW((thr), (h), duk_hbuffer_refzero, duk_hbuffer *) /* no 'norz' variant */ -#define DUK_HCOMPFUNC_INCREF(thr, h) DUK_HEAPHDR_INCREF((thr), (duk_heaphdr *) &(h)->obj) -#define DUK_HCOMPFUNC_DECREF(thr, h) DUK_HEAPHDR_DECREF_FAST_RAW((thr), (h), duk_hobject_refzero, duk_hobject *) -#define DUK_HCOMPFUNC_DECREF_NORZ(thr, h) DUK_HEAPHDR_DECREF_FAST_RAW((thr), (h), duk_hobject_refzero_norz, duk_hobject *) -#define DUK_HNATFUNC_INCREF(thr, h) DUK_HEAPHDR_INCREF((thr), (duk_heaphdr *) &(h)->obj) -#define DUK_HNATFUNC_DECREF(thr, h) DUK_HEAPHDR_DECREF_FAST_RAW((thr), (h), duk_hobject_refzero, duk_hobject *) -#define DUK_HNATFUNC_DECREF_NORZ(thr, h) DUK_HEAPHDR_DECREF_FAST_RAW((thr), (h), duk_hobject_refzero_norz, duk_hobject *) -#define DUK_HBUFOBJ_INCREF(thr, h) DUK_HEAPHDR_INCREF((thr), (duk_heaphdr *) &(h)->obj) -#define DUK_HBUFOBJ_DECREF(thr, h) DUK_HEAPHDR_DECREF_FAST_RAW((thr), (h), duk_hobject_refzero, duk_hobject *) -#define DUK_HBUFOBJ_DECREF_NORZ(thr, h) DUK_HEAPHDR_DECREF_FAST_RAW((thr), (h), duk_hobject_refzero_norz, duk_hobject *) -#define DUK_HTHREAD_INCREF(thr, h) DUK_HEAPHDR_INCREF((thr), (duk_heaphdr *) &(h)->obj) -#define DUK_HTHREAD_DECREF(thr, h) DUK_HEAPHDR_DECREF_FAST_RAW((thr), (h), duk_hobject_refzero, duk_hobject *) -#define DUK_HTHREAD_DECREF_NORZ(thr, h) DUK_HEAPHDR_DECREF_FAST_RAW((thr), (h), duk_hobject_refzero_norz, duk_hobject *) -#else -#define DUK_TVAL_INCREF(thr, tv) DUK_TVAL_INCREF_SLOW((thr), (tv)) -#define DUK_TVAL_DECREF(thr, tv) DUK_TVAL_DECREF_SLOW((thr), (tv)) -#define DUK_TVAL_DECREF_NORZ(thr, tv) DUK_TVAL_DECREF_NORZ_SLOW((thr), (tv)) -#define DUK_HEAPHDR_INCREF(thr, h) DUK_HEAPHDR_INCREF_SLOW((thr), (h)) -#define DUK_HEAPHDR_DECREF(thr, h) DUK_HEAPHDR_DECREF_SLOW((thr), (h)) -#define DUK_HEAPHDR_DECREF_NORZ(thr, h) DUK_HEAPHDR_DECREF_NORZ_SLOW((thr), (h)) -#define DUK_HSTRING_INCREF(thr, h) DUK_HEAPHDR_INCREF((thr), (duk_heaphdr *) (h)) -#define DUK_HSTRING_DECREF(thr, h) DUK_HSTRING_DECREF_SLOW((thr), (h)) -#define DUK_HSTRING_DECREF_NORZ(thr, h) DUK_HSTRING_DECREF_NORZ_SLOW((thr), (h)) -#define DUK_HOBJECT_INCREF(thr, h) DUK_HEAPHDR_INCREF((thr), (duk_heaphdr *) (h)) -#define DUK_HOBJECT_DECREF(thr, h) DUK_HOBJECT_DECREF_SLOW((thr), (h)) -#define DUK_HOBJECT_DECREF_NORZ(thr, h) DUK_HOBJECT_DECREF_NORZ_SLOW((thr), (h)) -#define DUK_HBUFFER_INCREF(thr, h) DUK_HEAPHDR_INCREF((thr), (duk_heaphdr *) (h)) -#define DUK_HBUFFER_DECREF(thr, h) DUK_HBUFFER_DECREF_SLOW((thr), (h)) -#define DUK_HBUFFER_DECREF_NORZ(thr, h) DUK_HBUFFER_DECREF_NORZ_SLOW((thr), (h)) -#define DUK_HCOMPFUNC_INCREF(thr, h) DUK_HEAPHDR_INCREF((thr), (duk_heaphdr *) &(h)->obj) -#define DUK_HCOMPFUNC_DECREF(thr, h) DUK_HOBJECT_DECREF_SLOW((thr), (duk_hobject *) &(h)->obj) -#define DUK_HCOMPFUNC_DECREF_NORZ(thr, h) DUK_HOBJECT_DECREF_NORZ_SLOW((thr), (duk_hobject *) &(h)->obj) -#define DUK_HNATFUNC_INCREF(thr, h) DUK_HEAPHDR_INCREF((thr), (duk_heaphdr *) &(h)->obj) -#define DUK_HNATFUNC_DECREF(thr, h) DUK_HOBJECT_DECREF_SLOW((thr), (duk_hobject *) &(h)->obj) -#define DUK_HNATFUNC_DECREF_NORZ(thr, h) DUK_HOBJECT_DECREF_NORZ_SLOW((thr), (duk_hobject *) &(h)->obj) -#define DUK_HBUFOBJ_INCREF(thr, h) DUK_HEAPHDR_INCREF((thr), (duk_heaphdr *) &(h)->obj) -#define DUK_HBUFOBJ_DECREF(thr, h) DUK_HOBJECT_DECREF_SLOW((thr), (duk_hobject *) &(h)->obj) -#define DUK_HBUFOB_DECREF_NORZ(thr, h) DUK_HOBJECT_DECREF_NORZ_SLOW((thr), (duk_hobject *) &(h)->obj) -#define DUK_HTHREAD_INCREF(thr, h) DUK_HEAPHDR_INCREF((thr), (duk_heaphdr *) &(h)->obj) -#define DUK_HTHREAD_DECREF(thr, h) DUK_HOBJECT_DECREF_SLOW((thr), (duk_hobject *) &(h)->obj) -#define DUK_HTHREAD_DECREF_NORZ(thr, h) DUK_HOBJECT_DECREF_NORZ_SLOW((thr), (duk_hobject *) &(h)->obj) -#endif - -/* Convenience for some situations; the above macros don't allow NULLs - * for performance reasons. Macros cover only actually needed cases. - */ -#define DUK_HEAPHDR_INCREF_ALLOWNULL(thr, h) \ - do { \ - if ((h) != NULL) { \ - DUK_HEAPHDR_INCREF((thr), (duk_heaphdr *) (h)); \ - } \ - } while (0) -#define DUK_HEAPHDR_DECREF_ALLOWNULL(thr, h) \ - do { \ - if ((h) != NULL) { \ - DUK_HEAPHDR_DECREF((thr), (duk_heaphdr *) (h)); \ - } \ - } while (0) -#define DUK_HEAPHDR_DECREF_NORZ_ALLOWNULL(thr, h) \ - do { \ - if ((h) != NULL) { \ - DUK_HEAPHDR_DECREF_NORZ((thr), (duk_heaphdr *) (h)); \ - } \ - } while (0) -#define DUK_HOBJECT_INCREF_ALLOWNULL(thr, h) \ - do { \ - if ((h) != NULL) { \ - DUK_HOBJECT_INCREF((thr), (h)); \ - } \ - } while (0) -#define DUK_HOBJECT_DECREF_ALLOWNULL(thr, h) \ - do { \ - if ((h) != NULL) { \ - DUK_HOBJECT_DECREF((thr), (h)); \ - } \ - } while (0) -#define DUK_HOBJECT_DECREF_NORZ_ALLOWNULL(thr, h) \ - do { \ - if ((h) != NULL) { \ - DUK_HOBJECT_DECREF_NORZ((thr), (h)); \ - } \ - } while (0) -#define DUK_HBUFFER_INCREF_ALLOWNULL(thr, h) \ - do { \ - if ((h) != NULL) { \ - DUK_HBUFFER_INCREF((thr), (h)); \ - } \ - } while (0) -#define DUK_HBUFFER_DECREF_ALLOWNULL(thr, h) \ - do { \ - if ((h) != NULL) { \ - DUK_HBUFFER_DECREF((thr), (h)); \ - } \ - } while (0) -#define DUK_HBUFFER_DECREF_NORZ_ALLOWNULL(thr, h) \ - do { \ - if ((h) != NULL) { \ - DUK_HBUFFER_DECREF_NORZ((thr), (h)); \ - } \ - } while (0) -#define DUK_HTHREAD_INCREF_ALLOWNULL(thr, h) \ - do { \ - if ((h) != NULL) { \ - DUK_HTHREAD_INCREF((thr), (h)); \ - } \ - } while (0) -#define DUK_HTHREAD_DECREF_ALLOWNULL(thr, h) \ - do { \ - if ((h) != NULL) { \ - DUK_HTHREAD_DECREF((thr), (h)); \ - } \ - } while (0) -#define DUK_HTHREAD_DECREF_NORZ_ALLOWNULL(thr, h) \ - do { \ - if ((h) != NULL) { \ - DUK_HTHREAD_DECREF_NORZ((thr), (h)); \ - } \ - } while (0) - -/* Called after one or more DECREF NORZ calls to handle pending side effects. - * At present DECREF NORZ does freeing inline but doesn't execute finalizers, - * so these macros check for pending finalizers and execute them. The FAST - * variant is performance critical. - */ -#if defined(DUK_USE_FINALIZER_SUPPORT) -#define DUK_REFZERO_CHECK_FAST(thr) \ - do { \ - duk_refzero_check_fast((thr)); \ - } while (0) -#define DUK_REFZERO_CHECK_SLOW(thr) \ - do { \ - duk_refzero_check_slow((thr)); \ - } while (0) -#else /* DUK_USE_FINALIZER_SUPPORT */ -#define DUK_REFZERO_CHECK_FAST(thr) \ - do { \ - } while (0) -#define DUK_REFZERO_CHECK_SLOW(thr) \ - do { \ - } while (0) -#endif /* DUK_USE_FINALIZER_SUPPORT */ - -/* - * Macros to set a duk_tval and update refcount of the target (decref the - * old value and incref the new value if necessary). This is both performance - * and footprint critical; any changes made should be measured for size/speed. - */ - -#define DUK_TVAL_SET_UNDEFINED_UPDREF_ALT0(thr, tvptr_dst) \ - do { \ - duk_tval *tv__dst; \ - duk_tval tv__tmp; \ - tv__dst = (tvptr_dst); \ - DUK_TVAL_SET_TVAL(&tv__tmp, tv__dst); \ - DUK_TVAL_SET_UNDEFINED(tv__dst); \ - DUK_TVAL_DECREF((thr), &tv__tmp); /* side effects */ \ - } while (0) - -#define DUK_TVAL_SET_UNDEFINED_UPDREF_NORZ_ALT0(thr, tvptr_dst) \ - do { \ - duk_tval *tv__dst; \ - duk_tval tv__tmp; \ - tv__dst = (tvptr_dst); \ - DUK_TVAL_SET_TVAL(&tv__tmp, tv__dst); \ - DUK_TVAL_SET_UNDEFINED(tv__dst); \ - DUK_TVAL_DECREF_NORZ((thr), &tv__tmp); \ - } while (0) - -#define DUK_TVAL_SET_UNUSED_UPDREF_ALT0(thr, tvptr_dst) \ - do { \ - duk_tval *tv__dst; \ - duk_tval tv__tmp; \ - tv__dst = (tvptr_dst); \ - DUK_TVAL_SET_TVAL(&tv__tmp, tv__dst); \ - DUK_TVAL_SET_UNUSED(tv__dst); \ - DUK_TVAL_DECREF((thr), &tv__tmp); /* side effects */ \ - } while (0) - -#define DUK_TVAL_SET_NULL_UPDREF_ALT0(thr, tvptr_dst) \ - do { \ - duk_tval *tv__dst; \ - duk_tval tv__tmp; \ - tv__dst = (tvptr_dst); \ - DUK_TVAL_SET_TVAL(&tv__tmp, tv__dst); \ - DUK_TVAL_SET_NULL(tv__dst); \ - DUK_TVAL_DECREF((thr), &tv__tmp); /* side effects */ \ - } while (0) - -#define DUK_TVAL_SET_BOOLEAN_UPDREF_ALT0(thr, tvptr_dst, newval) \ - do { \ - duk_tval *tv__dst; \ - duk_tval tv__tmp; \ - tv__dst = (tvptr_dst); \ - DUK_TVAL_SET_TVAL(&tv__tmp, tv__dst); \ - DUK_TVAL_SET_BOOLEAN(tv__dst, (newval)); \ - DUK_TVAL_DECREF((thr), &tv__tmp); /* side effects */ \ - } while (0) - -#define DUK_TVAL_SET_NUMBER_UPDREF_ALT0(thr, tvptr_dst, newval) \ - do { \ - duk_tval *tv__dst; \ - duk_tval tv__tmp; \ - tv__dst = (tvptr_dst); \ - DUK_TVAL_SET_TVAL(&tv__tmp, tv__dst); \ - DUK_TVAL_SET_NUMBER(tv__dst, (newval)); \ - DUK_TVAL_DECREF((thr), &tv__tmp); /* side effects */ \ - } while (0) -#define DUK_TVAL_SET_NUMBER_CHKFAST_UPDREF_ALT0(thr, tvptr_dst, newval) \ - do { \ - duk_tval *tv__dst; \ - duk_tval tv__tmp; \ - tv__dst = (tvptr_dst); \ - DUK_TVAL_SET_TVAL(&tv__tmp, tv__dst); \ - DUK_TVAL_SET_NUMBER_CHKFAST_FAST(tv__dst, (newval)); \ - DUK_TVAL_DECREF((thr), &tv__tmp); /* side effects */ \ - } while (0) -#define DUK_TVAL_SET_DOUBLE_UPDREF_ALT0(thr, tvptr_dst, newval) \ - do { \ - duk_tval *tv__dst; \ - duk_tval tv__tmp; \ - tv__dst = (tvptr_dst); \ - DUK_TVAL_SET_TVAL(&tv__tmp, tv__dst); \ - DUK_TVAL_SET_DOUBLE(tv__dst, (newval)); \ - DUK_TVAL_DECREF((thr), &tv__tmp); /* side effects */ \ - } while (0) -#define DUK_TVAL_SET_NAN_UPDREF_ALT0(thr, tvptr_dst) \ - do { \ - duk_tval *tv__dst; \ - duk_tval tv__tmp; \ - tv__dst = (tvptr_dst); \ - DUK_TVAL_SET_TVAL(&tv__tmp, tv__dst); \ - DUK_TVAL_SET_NAN(tv__dst); \ - DUK_TVAL_DECREF((thr), &tv__tmp); /* side effects */ \ - } while (0) -#if defined(DUK_USE_FASTINT) -#define DUK_TVAL_SET_I48_UPDREF_ALT0(thr, tvptr_dst, newval) \ - do { \ - duk_tval *tv__dst; \ - duk_tval tv__tmp; \ - tv__dst = (tvptr_dst); \ - DUK_TVAL_SET_TVAL(&tv__tmp, tv__dst); \ - DUK_TVAL_SET_I48(tv__dst, (newval)); \ - DUK_TVAL_DECREF((thr), &tv__tmp); /* side effects */ \ - } while (0) -#define DUK_TVAL_SET_I32_UPDREF_ALT0(thr, tvptr_dst, newval) \ - do { \ - duk_tval *tv__dst; \ - duk_tval tv__tmp; \ - tv__dst = (tvptr_dst); \ - DUK_TVAL_SET_TVAL(&tv__tmp, tv__dst); \ - DUK_TVAL_SET_I32(tv__dst, (newval)); \ - DUK_TVAL_DECREF((thr), &tv__tmp); /* side effects */ \ - } while (0) -#define DUK_TVAL_SET_U32_UPDREF_ALT0(thr, tvptr_dst, newval) \ - do { \ - duk_tval *tv__dst; \ - duk_tval tv__tmp; \ - tv__dst = (tvptr_dst); \ - DUK_TVAL_SET_TVAL(&tv__tmp, tv__dst); \ - DUK_TVAL_SET_U32(tv__dst, (newval)); \ - DUK_TVAL_DECREF((thr), &tv__tmp); /* side effects */ \ - } while (0) -#else -#define DUK_TVAL_SET_DOUBLE_CAST_UPDREF(thr, tvptr_dst, newval) \ - DUK_TVAL_SET_DOUBLE_UPDREF((thr), (tvptr_dst), (duk_double_t) (newval)) -#endif /* DUK_USE_FASTINT */ - -#define DUK_TVAL_SET_LIGHTFUNC_UPDREF_ALT0(thr, tvptr_dst, lf_v, lf_fp, lf_flags) \ - do { \ - duk_tval *tv__dst; \ - duk_tval tv__tmp; \ - tv__dst = (tvptr_dst); \ - DUK_TVAL_SET_TVAL(&tv__tmp, tv__dst); \ - DUK_TVAL_SET_LIGHTFUNC(tv__dst, (lf_v), (lf_fp), (lf_flags)); \ - DUK_TVAL_DECREF((thr), &tv__tmp); /* side effects */ \ - } while (0) - -#define DUK_TVAL_SET_STRING_UPDREF_ALT0(thr, tvptr_dst, newval) \ - do { \ - duk_tval *tv__dst; \ - duk_tval tv__tmp; \ - tv__dst = (tvptr_dst); \ - DUK_TVAL_SET_TVAL(&tv__tmp, tv__dst); \ - DUK_TVAL_SET_STRING(tv__dst, (newval)); \ - DUK_HSTRING_INCREF((thr), (newval)); \ - DUK_TVAL_DECREF((thr), &tv__tmp); /* side effects */ \ - } while (0) - -#define DUK_TVAL_SET_OBJECT_UPDREF_ALT0(thr, tvptr_dst, newval) \ - do { \ - duk_tval *tv__dst; \ - duk_tval tv__tmp; \ - tv__dst = (tvptr_dst); \ - DUK_TVAL_SET_TVAL(&tv__tmp, tv__dst); \ - DUK_TVAL_SET_OBJECT(tv__dst, (newval)); \ - DUK_HOBJECT_INCREF((thr), (newval)); \ - DUK_TVAL_DECREF((thr), &tv__tmp); /* side effects */ \ - } while (0) - -#define DUK_TVAL_SET_BUFFER_UPDREF_ALT0(thr, tvptr_dst, newval) \ - do { \ - duk_tval *tv__dst; \ - duk_tval tv__tmp; \ - tv__dst = (tvptr_dst); \ - DUK_TVAL_SET_TVAL(&tv__tmp, tv__dst); \ - DUK_TVAL_SET_BUFFER(tv__dst, (newval)); \ - DUK_HBUFFER_INCREF((thr), (newval)); \ - DUK_TVAL_DECREF((thr), &tv__tmp); /* side effects */ \ - } while (0) - -#define DUK_TVAL_SET_POINTER_UPDREF_ALT0(thr, tvptr_dst, newval) \ - do { \ - duk_tval *tv__dst; \ - duk_tval tv__tmp; \ - tv__dst = (tvptr_dst); \ - DUK_TVAL_SET_TVAL(&tv__tmp, tv__dst); \ - DUK_TVAL_SET_POINTER(tv__dst, (newval)); \ - DUK_TVAL_DECREF((thr), &tv__tmp); /* side effects */ \ - } while (0) - -/* DUK_TVAL_SET_TVAL_UPDREF() is used a lot in executor, property lookups, - * etc, so it's very important for performance. Measure when changing. - * - * NOTE: the source and destination duk_tval pointers may be the same, and - * the macros MUST deal with that correctly. - */ - -/* Original idiom used, minimal code size. */ -#define DUK_TVAL_SET_TVAL_UPDREF_ALT0(thr, tvptr_dst, tvptr_src) \ - do { \ - duk_tval *tv__dst, *tv__src; \ - duk_tval tv__tmp; \ - tv__dst = (tvptr_dst); \ - tv__src = (tvptr_src); \ - DUK_TVAL_SET_TVAL(&tv__tmp, tv__dst); \ - DUK_TVAL_SET_TVAL(tv__dst, tv__src); \ - DUK_TVAL_INCREF((thr), tv__src); \ - DUK_TVAL_DECREF((thr), &tv__tmp); /* side effects */ \ - } while (0) - -/* Faster alternative: avoid making a temporary copy of tvptr_dst and use - * fast incref/decref macros. - */ -#define DUK_TVAL_SET_TVAL_UPDREF_ALT1(thr, tvptr_dst, tvptr_src) \ - do { \ - duk_tval *tv__dst, *tv__src; \ - duk_heaphdr *h__obj; \ - tv__dst = (tvptr_dst); \ - tv__src = (tvptr_src); \ - DUK_TVAL_INCREF_FAST((thr), tv__src); \ - if (DUK_TVAL_NEEDS_REFCOUNT_UPDATE(tv__dst)) { \ - h__obj = DUK_TVAL_GET_HEAPHDR(tv__dst); \ - DUK_ASSERT(h__obj != NULL); \ - DUK_TVAL_SET_TVAL(tv__dst, tv__src); \ - DUK_HEAPHDR_DECREF_FAST((thr), h__obj); /* side effects */ \ - } else { \ - DUK_TVAL_SET_TVAL(tv__dst, tv__src); \ - } \ - } while (0) - -/* XXX: no optimized variants yet */ -#define DUK_TVAL_SET_UNDEFINED_UPDREF DUK_TVAL_SET_UNDEFINED_UPDREF_ALT0 -#define DUK_TVAL_SET_UNDEFINED_UPDREF_NORZ DUK_TVAL_SET_UNDEFINED_UPDREF_NORZ_ALT0 -#define DUK_TVAL_SET_UNUSED_UPDREF DUK_TVAL_SET_UNUSED_UPDREF_ALT0 -#define DUK_TVAL_SET_NULL_UPDREF DUK_TVAL_SET_NULL_UPDREF_ALT0 -#define DUK_TVAL_SET_BOOLEAN_UPDREF DUK_TVAL_SET_BOOLEAN_UPDREF_ALT0 -#define DUK_TVAL_SET_NUMBER_UPDREF DUK_TVAL_SET_NUMBER_UPDREF_ALT0 -#define DUK_TVAL_SET_NUMBER_CHKFAST_UPDREF DUK_TVAL_SET_NUMBER_CHKFAST_UPDREF_ALT0 -#define DUK_TVAL_SET_DOUBLE_UPDREF DUK_TVAL_SET_DOUBLE_UPDREF_ALT0 -#define DUK_TVAL_SET_NAN_UPDREF DUK_TVAL_SET_NAN_UPDREF_ALT0 -#if defined(DUK_USE_FASTINT) -#define DUK_TVAL_SET_I48_UPDREF DUK_TVAL_SET_I48_UPDREF_ALT0 -#define DUK_TVAL_SET_I32_UPDREF DUK_TVAL_SET_I32_UPDREF_ALT0 -#define DUK_TVAL_SET_U32_UPDREF DUK_TVAL_SET_U32_UPDREF_ALT0 -#else -#define DUK_TVAL_SET_I48_UPDREF DUK_TVAL_SET_DOUBLE_CAST_UPDREF /* XXX: fast int-to-double */ -#define DUK_TVAL_SET_I32_UPDREF DUK_TVAL_SET_DOUBLE_CAST_UPDREF -#define DUK_TVAL_SET_U32_UPDREF DUK_TVAL_SET_DOUBLE_CAST_UPDREF -#endif /* DUK_USE_FASTINT */ -#define DUK_TVAL_SET_FASTINT_UPDREF DUK_TVAL_SET_I48_UPDREF /* convenience */ -#define DUK_TVAL_SET_LIGHTFUNC_UPDREF DUK_TVAL_SET_LIGHTFUNC_UPDREF_ALT0 -#define DUK_TVAL_SET_STRING_UPDREF DUK_TVAL_SET_STRING_UPDREF_ALT0 -#define DUK_TVAL_SET_OBJECT_UPDREF DUK_TVAL_SET_OBJECT_UPDREF_ALT0 -#define DUK_TVAL_SET_BUFFER_UPDREF DUK_TVAL_SET_BUFFER_UPDREF_ALT0 -#define DUK_TVAL_SET_POINTER_UPDREF DUK_TVAL_SET_POINTER_UPDREF_ALT0 - -#if defined(DUK_USE_FAST_REFCOUNT_DEFAULT) -/* Optimized for speed. */ -#define DUK_TVAL_SET_TVAL_UPDREF DUK_TVAL_SET_TVAL_UPDREF_ALT1 -#define DUK_TVAL_SET_TVAL_UPDREF_FAST DUK_TVAL_SET_TVAL_UPDREF_ALT1 -#define DUK_TVAL_SET_TVAL_UPDREF_SLOW DUK_TVAL_SET_TVAL_UPDREF_ALT0 -#else -/* Optimized for size. */ -#define DUK_TVAL_SET_TVAL_UPDREF DUK_TVAL_SET_TVAL_UPDREF_ALT0 -#define DUK_TVAL_SET_TVAL_UPDREF_FAST DUK_TVAL_SET_TVAL_UPDREF_ALT0 -#define DUK_TVAL_SET_TVAL_UPDREF_SLOW DUK_TVAL_SET_TVAL_UPDREF_ALT0 -#endif - -#else /* DUK_USE_REFERENCE_COUNTING */ - -#define DUK_TVAL_NEEDS_REFCOUNT_UPDATE(tv) 0 -#define DUK_HEAPHDR_NEEDS_REFCOUNT_UPDATE(h) 0 - -#define DUK_TVAL_INCREF_FAST(thr, v) \ - do { \ - } while (0) /* nop */ -#define DUK_TVAL_DECREF_FAST(thr, v) \ - do { \ - } while (0) /* nop */ -#define DUK_TVAL_DECREF_NORZ_FAST(thr, v) \ - do { \ - } while (0) /* nop */ -#define DUK_TVAL_INCREF_SLOW(thr, v) \ - do { \ - } while (0) /* nop */ -#define DUK_TVAL_DECREF_SLOW(thr, v) \ - do { \ - } while (0) /* nop */ -#define DUK_TVAL_DECREF_NORZ_SLOW(thr, v) \ - do { \ - } while (0) /* nop */ -#define DUK_TVAL_INCREF(thr, v) \ - do { \ - } while (0) /* nop */ -#define DUK_TVAL_DECREF(thr, v) \ - do { \ - } while (0) /* nop */ -#define DUK_TVAL_DECREF_NORZ(thr, v) \ - do { \ - } while (0) /* nop */ -#define DUK_HEAPHDR_INCREF_FAST(thr, h) \ - do { \ - } while (0) /* nop */ -#define DUK_HEAPHDR_DECREF_FAST(thr, h) \ - do { \ - } while (0) /* nop */ -#define DUK_HEAPHDR_DECREF_NORZ_FAST(thr, h) \ - do { \ - } while (0) /* nop */ -#define DUK_HEAPHDR_INCREF_SLOW(thr, h) \ - do { \ - } while (0) /* nop */ -#define DUK_HEAPHDR_DECREF_SLOW(thr, h) \ - do { \ - } while (0) /* nop */ -#define DUK_HEAPHDR_DECREF_NORZ_SLOW(thr, h) \ - do { \ - } while (0) /* nop */ -#define DUK_HEAPHDR_INCREF(thr, h) \ - do { \ - } while (0) /* nop */ -#define DUK_HEAPHDR_DECREF(thr, h) \ - do { \ - } while (0) /* nop */ -#define DUK_HEAPHDR_DECREF_NORZ(thr, h) \ - do { \ - } while (0) /* nop */ -#define DUK_HSTRING_INCREF_FAST(thr, h) \ - do { \ - } while (0) /* nop */ -#define DUK_HSTRING_DECREF_FAST(thr, h) \ - do { \ - } while (0) /* nop */ -#define DUK_HSTRING_DECREF_NORZ_FAST(thr, h) \ - do { \ - } while (0) /* nop */ -#define DUK_HSTRING_INCREF_SLOW(thr, h) \ - do { \ - } while (0) /* nop */ -#define DUK_HSTRING_DECREF_SLOW(thr, h) \ - do { \ - } while (0) /* nop */ -#define DUK_HSTRING_DECREF_NORZ_SLOW(thr, h) \ - do { \ - } while (0) /* nop */ -#define DUK_HSTRING_INCREF(thr, h) \ - do { \ - } while (0) /* nop */ -#define DUK_HSTRING_DECREF(thr, h) \ - do { \ - } while (0) /* nop */ -#define DUK_HSTRING_DECREF_NORZ(thr, h) \ - do { \ - } while (0) /* nop */ -#define DUK_HOBJECT_INCREF_FAST(thr, h) \ - do { \ - } while (0) /* nop */ -#define DUK_HOBJECT_DECREF_FAST(thr, h) \ - do { \ - } while (0) /* nop */ -#define DUK_HOBJECT_DECREF_NORZ_FAST(thr, h) \ - do { \ - } while (0) /* nop */ -#define DUK_HOBJECT_INCREF_SLOW(thr, h) \ - do { \ - } while (0) /* nop */ -#define DUK_HOBJECT_DECREF_SLOW(thr, h) \ - do { \ - } while (0) /* nop */ -#define DUK_HOBJECT_DECREF_NORZ_SLOW(thr, h) \ - do { \ - } while (0) /* nop */ -#define DUK_HOBJECT_INCREF(thr, h) \ - do { \ - } while (0) /* nop */ -#define DUK_HOBJECT_DECREF(thr, h) \ - do { \ - } while (0) /* nop */ -#define DUK_HOBJECT_DECREF_NORZ(thr, h) \ - do { \ - } while (0) /* nop */ -#define DUK_HBUFFER_INCREF_FAST(thr, h) \ - do { \ - } while (0) /* nop */ -#define DUK_HBUFFER_DECREF_FAST(thr, h) \ - do { \ - } while (0) /* nop */ -#define DUK_HBUFFER_DECREF_NORZ_FAST(thr, h) \ - do { \ - } while (0) /* nop */ -#define DUK_HBUFFER_INCREF_SLOW(thr, h) \ - do { \ - } while (0) /* nop */ -#define DUK_HBUFFER_DECREF_SLOW(thr, h) \ - do { \ - } while (0) /* nop */ -#define DUK_HBUFFER_DECREF_NORZ_SLOW(thr, h) \ - do { \ - } while (0) /* nop */ -#define DUK_HBUFFER_INCREF(thr, h) \ - do { \ - } while (0) /* nop */ -#define DUK_HBUFFER_DECREF(thr, h) \ - do { \ - } while (0) /* nop */ -#define DUK_HBUFFER_DECREF_NORZ(thr, h) \ - do { \ - } while (0) /* nop */ - -#define DUK_HCOMPFUNC_INCREF(thr, h) \ - do { \ - } while (0) /* nop */ -#define DUK_HCOMPFUNC_DECREF(thr, h) \ - do { \ - } while (0) /* nop */ -#define DUK_HCOMPFUNC_DECREF_NORZ(thr, h) \ - do { \ - } while (0) /* nop */ -#define DUK_HNATFUNC_INCREF(thr, h) \ - do { \ - } while (0) /* nop */ -#define DUK_HNATFUNC_DECREF(thr, h) \ - do { \ - } while (0) /* nop */ -#define DUK_HNATFUNC_DECREF_NORZ(thr, h) \ - do { \ - } while (0) /* nop */ -#define DUK_HBUFOBJ_INCREF(thr, h) \ - do { \ - } while (0) /* nop */ -#define DUK_HBUFOBJ_DECREF(thr, h) \ - do { \ - } while (0) /* nop */ -#define DUK_HBUFOBJ_DECREF_NORZ(thr, h) \ - do { \ - } while (0) /* nop */ -#define DUK_HTHREAD_INCREF(thr, h) \ - do { \ - } while (0) /* nop */ -#define DUK_HTHREAD_DECREF(thr, h) \ - do { \ - } while (0) /* nop */ -#define DUK_HTHREAD_DECREF_NORZ(thr, h) \ - do { \ - } while (0) /* nop */ -#define DUK_HOBJECT_INCREF_ALLOWNULL(thr, h) \ - do { \ - } while (0) /* nop */ -#define DUK_HOBJECT_DECREF_ALLOWNULL(thr, h) \ - do { \ - } while (0) /* nop */ -#define DUK_HOBJECT_DECREF_NORZ_ALLOWNULL(thr, h) \ - do { \ - } while (0) /* nop */ -#define DUK_HBUFFER_INCREF_ALLOWNULL(thr, h) \ - do { \ - } while (0) /* nop */ -#define DUK_HBUFFER_DECREF_ALLOWNULL(thr, h) \ - do { \ - } while (0) /* nop */ -#define DUK_HBUFFER_DECREF_NORZ_ALLOWNULL(thr, h) \ - do { \ - } while (0) /* nop */ - -#define DUK_REFZERO_CHECK_FAST(thr) \ - do { \ - } while (0) /* nop */ -#define DUK_REFZERO_CHECK_SLOW(thr) \ - do { \ - } while (0) /* nop */ - -#define DUK_TVAL_SET_UNDEFINED_UPDREF_ALT0(thr, tvptr_dst) \ - do { \ - duk_tval *tv__dst; \ - tv__dst = (tvptr_dst); \ - DUK_TVAL_SET_UNDEFINED(tv__dst); \ - DUK_UNREF((thr)); \ - } while (0) - -#define DUK_TVAL_SET_UNUSED_UPDREF_ALT0(thr, tvptr_dst) \ - do { \ - duk_tval *tv__dst; \ - tv__dst = (tvptr_dst); \ - DUK_TVAL_SET_UNUSED(tv__dst); \ - DUK_UNREF((thr)); \ - } while (0) - -#define DUK_TVAL_SET_NULL_UPDREF_ALT0(thr, tvptr_dst) \ - do { \ - duk_tval *tv__dst; \ - tv__dst = (tvptr_dst); \ - DUK_TVAL_SET_NULL(tv__dst); \ - DUK_UNREF((thr)); \ - } while (0) - -#define DUK_TVAL_SET_BOOLEAN_UPDREF_ALT0(thr, tvptr_dst, newval) \ - do { \ - duk_tval *tv__dst; \ - tv__dst = (tvptr_dst); \ - DUK_TVAL_SET_BOOLEAN(tv__dst, (newval)); \ - DUK_UNREF((thr)); \ - } while (0) - -#define DUK_TVAL_SET_NUMBER_UPDREF_ALT0(thr, tvptr_dst, newval) \ - do { \ - duk_tval *tv__dst; \ - tv__dst = (tvptr_dst); \ - DUK_TVAL_SET_NUMBER(tv__dst, (newval)); \ - DUK_UNREF((thr)); \ - } while (0) -#define DUK_TVAL_SET_NUMBER_CHKFAST_UPDREF_ALT0(thr, tvptr_dst, newval) \ - do { \ - duk_tval *tv__dst; \ - tv__dst = (tvptr_dst); \ - DUK_TVAL_SET_NUMBER_CHKFAST_FAST(tv__dst, (newval)); \ - DUK_UNREF((thr)); \ - } while (0) -#define DUK_TVAL_SET_DOUBLE_UPDREF_ALT0(thr, tvptr_dst, newval) \ - do { \ - duk_tval *tv__dst; \ - tv__dst = (tvptr_dst); \ - DUK_TVAL_SET_DOUBLE(tv__dst, (newval)); \ - DUK_UNREF((thr)); \ - } while (0) -#define DUK_TVAL_SET_NAN_UPDREF_ALT0(thr, tvptr_dst) \ - do { \ - duk_tval *tv__dst; \ - tv__dst = (tvptr_dst); \ - DUK_TVAL_SET_NAN(tv__dst); \ - DUK_UNREF((thr)); \ - } while (0) -#if defined(DUK_USE_FASTINT) -#define DUK_TVAL_SET_I48_UPDREF_ALT0(thr, tvptr_dst, newval) \ - do { \ - duk_tval *tv__dst; \ - tv__dst = (tvptr_dst); \ - DUK_TVAL_SET_I48(tv__dst, (newval)); \ - DUK_UNREF((thr)); \ - } while (0) -#define DUK_TVAL_SET_I32_UPDREF_ALT0(thr, tvptr_dst, newval) \ - do { \ - duk_tval *tv__dst; \ - tv__dst = (tvptr_dst); \ - DUK_TVAL_SET_I32(tv__dst, (newval)); \ - DUK_UNREF((thr)); \ - } while (0) -#define DUK_TVAL_SET_U32_UPDREF_ALT0(thr, tvptr_dst, newval) \ - do { \ - duk_tval *tv__dst; \ - tv__dst = (tvptr_dst); \ - DUK_TVAL_SET_U32(tv__dst, (newval)); \ - DUK_UNREF((thr)); \ - } while (0) -#else -#define DUK_TVAL_SET_DOUBLE_CAST_UPDREF(thr, tvptr_dst, newval) \ - DUK_TVAL_SET_DOUBLE_UPDREF((thr), (tvptr_dst), (duk_double_t) (newval)) -#endif /* DUK_USE_FASTINT */ - -#define DUK_TVAL_SET_LIGHTFUNC_UPDREF_ALT0(thr, tvptr_dst, lf_v, lf_fp, lf_flags) \ - do { \ - duk_tval *tv__dst; \ - tv__dst = (tvptr_dst); \ - DUK_TVAL_SET_LIGHTFUNC(tv__dst, (lf_v), (lf_fp), (lf_flags)); \ - DUK_UNREF((thr)); \ - } while (0) - -#define DUK_TVAL_SET_STRING_UPDREF_ALT0(thr, tvptr_dst, newval) \ - do { \ - duk_tval *tv__dst; \ - tv__dst = (tvptr_dst); \ - DUK_TVAL_SET_STRING(tv__dst, (newval)); \ - DUK_UNREF((thr)); \ - } while (0) - -#define DUK_TVAL_SET_OBJECT_UPDREF_ALT0(thr, tvptr_dst, newval) \ - do { \ - duk_tval *tv__dst; \ - tv__dst = (tvptr_dst); \ - DUK_TVAL_SET_OBJECT(tv__dst, (newval)); \ - DUK_UNREF((thr)); \ - } while (0) - -#define DUK_TVAL_SET_BUFFER_UPDREF_ALT0(thr, tvptr_dst, newval) \ - do { \ - duk_tval *tv__dst; \ - tv__dst = (tvptr_dst); \ - DUK_TVAL_SET_BUFFER(tv__dst, (newval)); \ - DUK_UNREF((thr)); \ - } while (0) - -#define DUK_TVAL_SET_POINTER_UPDREF_ALT0(thr, tvptr_dst, newval) \ - do { \ - duk_tval *tv__dst; \ - tv__dst = (tvptr_dst); \ - DUK_TVAL_SET_POINTER(tv__dst, (newval)); \ - DUK_UNREF((thr)); \ - } while (0) - -#define DUK_TVAL_SET_TVAL_UPDREF_ALT0(thr, tvptr_dst, tvptr_src) \ - do { \ - duk_tval *tv__dst, *tv__src; \ - tv__dst = (tvptr_dst); \ - tv__src = (tvptr_src); \ - DUK_TVAL_SET_TVAL(tv__dst, tv__src); \ - DUK_UNREF((thr)); \ - } while (0) - -#define DUK_TVAL_SET_UNDEFINED_UPDREF DUK_TVAL_SET_UNDEFINED_UPDREF_ALT0 -#define DUK_TVAL_SET_UNDEFINED_UPDREF_NORZ DUK_TVAL_SET_UNDEFINED_UPDREF_ALT0 -#define DUK_TVAL_SET_UNUSED_UPDREF DUK_TVAL_SET_UNUSED_UPDREF_ALT0 -#define DUK_TVAL_SET_NULL_UPDREF DUK_TVAL_SET_NULL_UPDREF_ALT0 -#define DUK_TVAL_SET_BOOLEAN_UPDREF DUK_TVAL_SET_BOOLEAN_UPDREF_ALT0 -#define DUK_TVAL_SET_NUMBER_UPDREF DUK_TVAL_SET_NUMBER_UPDREF_ALT0 -#define DUK_TVAL_SET_NUMBER_CHKFAST_UPDREF DUK_TVAL_SET_NUMBER_CHKFAST_UPDREF_ALT0 -#define DUK_TVAL_SET_DOUBLE_UPDREF DUK_TVAL_SET_DOUBLE_UPDREF_ALT0 -#define DUK_TVAL_SET_NAN_UPDREF DUK_TVAL_SET_NAN_UPDREF_ALT0 -#if defined(DUK_USE_FASTINT) -#define DUK_TVAL_SET_I48_UPDREF DUK_TVAL_SET_I48_UPDREF_ALT0 -#define DUK_TVAL_SET_I32_UPDREF DUK_TVAL_SET_I32_UPDREF_ALT0 -#define DUK_TVAL_SET_U32_UPDREF DUK_TVAL_SET_U32_UPDREF_ALT0 -#else -#define DUK_TVAL_SET_I48_UPDREF DUK_TVAL_SET_DOUBLE_CAST_UPDREF /* XXX: fast-int-to-double */ -#define DUK_TVAL_SET_I32_UPDREF DUK_TVAL_SET_DOUBLE_CAST_UPDREF -#define DUK_TVAL_SET_U32_UPDREF DUK_TVAL_SET_DOUBLE_CAST_UPDREF -#endif /* DUK_USE_FASTINT */ -#define DUK_TVAL_SET_FASTINT_UPDREF DUK_TVAL_SET_I48_UPDREF /* convenience */ -#define DUK_TVAL_SET_LIGHTFUNC_UPDREF DUK_TVAL_SET_LIGHTFUNC_UPDREF_ALT0 -#define DUK_TVAL_SET_STRING_UPDREF DUK_TVAL_SET_STRING_UPDREF_ALT0 -#define DUK_TVAL_SET_OBJECT_UPDREF DUK_TVAL_SET_OBJECT_UPDREF_ALT0 -#define DUK_TVAL_SET_BUFFER_UPDREF DUK_TVAL_SET_BUFFER_UPDREF_ALT0 -#define DUK_TVAL_SET_POINTER_UPDREF DUK_TVAL_SET_POINTER_UPDREF_ALT0 - -#define DUK_TVAL_SET_TVAL_UPDREF DUK_TVAL_SET_TVAL_UPDREF_ALT0 -#define DUK_TVAL_SET_TVAL_UPDREF_FAST DUK_TVAL_SET_TVAL_UPDREF_ALT0 -#define DUK_TVAL_SET_TVAL_UPDREF_SLOW DUK_TVAL_SET_TVAL_UPDREF_ALT0 - -#endif /* DUK_USE_REFERENCE_COUNTING */ - -/* - * Some convenience macros that don't have optimized implementations now. - */ - -#define DUK_TVAL_SET_TVAL_UPDREF_NORZ(thr, tv_dst, tv_src) \ - do { \ - duk_hthread *duk__thr = (thr); \ - duk_tval *duk__dst = (tv_dst); \ - duk_tval *duk__src = (tv_src); \ - DUK_UNREF(duk__thr); \ - DUK_TVAL_DECREF_NORZ(thr, duk__dst); \ - DUK_TVAL_SET_TVAL(duk__dst, duk__src); \ - DUK_TVAL_INCREF(thr, duk__dst); \ - } while (0) - -#define DUK_TVAL_SET_U32_UPDREF_NORZ(thr, tv_dst, val) \ - do { \ - duk_hthread *duk__thr = (thr); \ - duk_tval *duk__dst = (tv_dst); \ - duk_uint32_t duk__val = (duk_uint32_t) (val); \ - DUK_UNREF(duk__thr); \ - DUK_TVAL_DECREF_NORZ(thr, duk__dst); \ - DUK_TVAL_SET_U32(duk__dst, duk__val); \ - } while (0) - -/* - * Prototypes - */ - -#if defined(DUK_USE_REFERENCE_COUNTING) -#if defined(DUK_USE_FINALIZER_SUPPORT) -DUK_INTERNAL_DECL void duk_refzero_check_slow(duk_hthread *thr); -DUK_INTERNAL_DECL void duk_refzero_check_fast(duk_hthread *thr); -#endif -DUK_INTERNAL_DECL void duk_heaphdr_refcount_finalize_norz(duk_heap *heap, duk_heaphdr *hdr); -DUK_INTERNAL_DECL void duk_hobject_refcount_finalize_norz(duk_heap *heap, duk_hobject *h); -#if 0 /* Not needed: fast path handles inline; slow path uses duk_heaphdr_decref() which is needed anyway. */ -DUK_INTERNAL_DECL void duk_hstring_decref(duk_hthread *thr, duk_hstring *h); -DUK_INTERNAL_DECL void duk_hstring_decref_norz(duk_hthread *thr, duk_hstring *h); -DUK_INTERNAL_DECL void duk_hbuffer_decref(duk_hthread *thr, duk_hbuffer *h); -DUK_INTERNAL_DECL void duk_hbuffer_decref_norz(duk_hthread *thr, duk_hbuffer *h); -DUK_INTERNAL_DECL void duk_hobject_decref(duk_hthread *thr, duk_hobject *h); -DUK_INTERNAL_DECL void duk_hobject_decref_norz(duk_hthread *thr, duk_hobject *h); -#endif -DUK_INTERNAL_DECL void duk_heaphdr_refzero(duk_hthread *thr, duk_heaphdr *h); -DUK_INTERNAL_DECL void duk_heaphdr_refzero_norz(duk_hthread *thr, duk_heaphdr *h); -#if defined(DUK_USE_FAST_REFCOUNT_DEFAULT) -DUK_INTERNAL_DECL void duk_hstring_refzero(duk_hthread *thr, duk_hstring *h); /* no 'norz' variant */ -DUK_INTERNAL_DECL void duk_hbuffer_refzero(duk_hthread *thr, duk_hbuffer *h); /* no 'norz' variant */ -DUK_INTERNAL_DECL void duk_hobject_refzero(duk_hthread *thr, duk_hobject *h); -DUK_INTERNAL_DECL void duk_hobject_refzero_norz(duk_hthread *thr, duk_hobject *h); -#else -DUK_INTERNAL_DECL void duk_tval_incref(duk_tval *tv); -DUK_INTERNAL_DECL void duk_tval_decref(duk_hthread *thr, duk_tval *tv); -DUK_INTERNAL_DECL void duk_tval_decref_norz(duk_hthread *thr, duk_tval *tv); -DUK_INTERNAL_DECL void duk_heaphdr_incref(duk_heaphdr *h); -DUK_INTERNAL_DECL void duk_heaphdr_decref(duk_hthread *thr, duk_heaphdr *h); -DUK_INTERNAL_DECL void duk_heaphdr_decref_norz(duk_hthread *thr, duk_heaphdr *h); -#endif -#else /* DUK_USE_REFERENCE_COUNTING */ -/* no refcounting */ -#endif /* DUK_USE_REFERENCE_COUNTING */ - -#endif /* DUK_REFCOUNT_H_INCLUDED */ -/* #include duk_api_internal.h */ -#line 1 "duk_api_internal.h" -/* - * Internal API calls which have (stack and other) semantics similar - * to the public API. - */ - -#if !defined(DUK_API_INTERNAL_H_INCLUDED) -#define DUK_API_INTERNAL_H_INCLUDED - -/* Inline macro helpers. */ -#if defined(DUK_USE_PREFER_SIZE) -#define DUK_INLINE_PERF -#define DUK_ALWAYS_INLINE_PERF -#define DUK_NOINLINE_PERF -#else -#define DUK_INLINE_PERF DUK_INLINE -#define DUK_ALWAYS_INLINE_PERF DUK_ALWAYS_INLINE -#define DUK_NOINLINE_PERF DUK_NOINLINE -#endif - -/* Inline macro helpers, for bytecode executor. */ -#if defined(DUK_USE_EXEC_PREFER_SIZE) -#define DUK_EXEC_INLINE_PERF -#define DUK_EXEC_ALWAYS_INLINE_PERF -#define DUK_EXEC_NOINLINE_PERF -#else -#define DUK_EXEC_INLINE_PERF DUK_INLINE -#define DUK_EXEC_ALWAYS_INLINE_PERF DUK_ALWAYS_INLINE -#define DUK_EXEC_NOINLINE_PERF DUK_NOINLINE -#endif - -/* duk_push_sprintf constants */ -#define DUK_PUSH_SPRINTF_INITIAL_SIZE 256L -#define DUK_PUSH_SPRINTF_SANITY_LIMIT (1L * 1024L * 1024L * 1024L) - -/* Flag ORed to err_code to indicate __FILE__ / __LINE__ is not - * blamed as source of error for error fileName / lineNumber. - */ -#define DUK_ERRCODE_FLAG_NOBLAME_FILELINE (1L << 24) - -/* Current convention is to use duk_size_t for value stack sizes and global indices, - * and duk_idx_t for local frame indices. - */ -DUK_INTERNAL_DECL void duk_valstack_grow_check_throw(duk_hthread *thr, duk_size_t min_bytes); -DUK_INTERNAL_DECL duk_bool_t duk_valstack_grow_check_nothrow(duk_hthread *thr, duk_size_t min_bytes); -DUK_INTERNAL_DECL void duk_valstack_shrink_check_nothrow(duk_hthread *thr, duk_bool_t snug); - -DUK_INTERNAL_DECL void duk_copy_tvals_incref(duk_hthread *thr, duk_tval *tv_dst, duk_tval *tv_src, duk_size_t count); - -DUK_INTERNAL_DECL duk_tval *duk_reserve_gap(duk_hthread *thr, duk_idx_t idx_base, duk_idx_t count); - -DUK_INTERNAL_DECL void duk_set_top_unsafe(duk_hthread *thr, duk_idx_t idx); -DUK_INTERNAL_DECL void duk_set_top_and_wipe(duk_hthread *thr, duk_idx_t top, duk_idx_t idx_wipe_start); - -DUK_INTERNAL_DECL void duk_dup_0(duk_hthread *thr); -DUK_INTERNAL_DECL void duk_dup_1(duk_hthread *thr); -DUK_INTERNAL_DECL void duk_dup_2(duk_hthread *thr); -/* duk_dup_m1() would be same as duk_dup_top() */ -DUK_INTERNAL_DECL void duk_dup_m2(duk_hthread *thr); -DUK_INTERNAL_DECL void duk_dup_m3(duk_hthread *thr); -DUK_INTERNAL_DECL void duk_dup_m4(duk_hthread *thr); - -DUK_INTERNAL_DECL void duk_remove_unsafe(duk_hthread *thr, duk_idx_t idx); -DUK_INTERNAL_DECL void duk_remove_m2(duk_hthread *thr); -DUK_INTERNAL_DECL void duk_remove_n(duk_hthread *thr, duk_idx_t idx, duk_idx_t count); -DUK_INTERNAL_DECL void duk_remove_n_unsafe(duk_hthread *thr, duk_idx_t idx, duk_idx_t count); - -DUK_INTERNAL_DECL duk_int_t duk_get_type_tval(duk_tval *tv); -DUK_INTERNAL_DECL duk_uint_t duk_get_type_mask_tval(duk_tval *tv); - -#if defined(DUK_USE_VERBOSE_ERRORS) && defined(DUK_USE_PARANOID_ERRORS) -DUK_INTERNAL_DECL const char *duk_get_type_name(duk_hthread *thr, duk_idx_t idx); -#endif -DUK_INTERNAL_DECL duk_small_uint_t duk_get_class_number(duk_hthread *thr, duk_idx_t idx); - -DUK_INTERNAL_DECL duk_tval *duk_get_tval(duk_hthread *thr, duk_idx_t idx); -DUK_INTERNAL_DECL duk_tval *duk_get_tval_or_unused(duk_hthread *thr, duk_idx_t idx); -DUK_INTERNAL_DECL duk_tval *duk_require_tval(duk_hthread *thr, duk_idx_t idx); -DUK_INTERNAL_DECL void duk_push_tval(duk_hthread *thr, duk_tval *tv); - -/* Push the current 'this' binding; throw TypeError if binding is not object - * coercible (CheckObjectCoercible). - */ -DUK_INTERNAL_DECL void duk_push_this_check_object_coercible(duk_hthread *thr); - -/* duk_push_this() + CheckObjectCoercible() + duk_to_object() */ -DUK_INTERNAL_DECL duk_hobject *duk_push_this_coercible_to_object(duk_hthread *thr); - -/* duk_push_this() + CheckObjectCoercible() + duk_to_string() */ -DUK_INTERNAL_DECL duk_hstring *duk_push_this_coercible_to_string(duk_hthread *thr); - -DUK_INTERNAL_DECL duk_hstring *duk_push_uint_to_hstring(duk_hthread *thr, duk_uint_t i); - -/* Get a borrowed duk_tval pointer to the current 'this' binding. Caller must - * make sure there's an active callstack entry. Note that the returned pointer - * is unstable with regards to side effects. - */ -DUK_INTERNAL_DECL duk_tval *duk_get_borrowed_this_tval(duk_hthread *thr); - -/* XXX: add fastint support? */ -#define duk_push_u64(thr, val) duk_push_number((thr), (duk_double_t) (val)) -#define duk_push_i64(thr, val) duk_push_number((thr), (duk_double_t) (val)) - -/* duk_push_(u)int() is guaranteed to support at least (un)signed 32-bit range */ -#define duk_push_u32(thr, val) duk_push_uint((thr), (duk_uint_t) (val)) -#define duk_push_i32(thr, val) duk_push_int((thr), (duk_int_t) (val)) - -/* sometimes stack and array indices need to go on the stack */ -#define duk_push_idx(thr, val) duk_push_int((thr), (duk_int_t) (val)) -#define duk_push_uarridx(thr, val) duk_push_uint((thr), (duk_uint_t) (val)) -#define duk_push_size_t(thr, val) duk_push_uint((thr), (duk_uint_t) (val)) /* XXX: assumed to fit for now */ - -DUK_INTERNAL_DECL duk_bool_t duk_is_string_notsymbol(duk_hthread *thr, duk_idx_t idx); - -DUK_INTERNAL_DECL duk_bool_t duk_is_callable_tval(duk_hthread *thr, duk_tval *tv); - -DUK_INTERNAL_DECL duk_bool_t duk_is_bare_object(duk_hthread *thr, duk_idx_t idx); - -DUK_INTERNAL_DECL duk_hstring *duk_get_hstring(duk_hthread *thr, duk_idx_t idx); -DUK_INTERNAL_DECL duk_hstring *duk_get_hstring_notsymbol(duk_hthread *thr, duk_idx_t idx); -DUK_INTERNAL_DECL const char *duk_get_string_notsymbol(duk_hthread *thr, duk_idx_t idx); -DUK_INTERNAL_DECL duk_hobject *duk_get_hobject(duk_hthread *thr, duk_idx_t idx); -DUK_INTERNAL_DECL duk_hbuffer *duk_get_hbuffer(duk_hthread *thr, duk_idx_t idx); -DUK_INTERNAL_DECL duk_hthread *duk_get_hthread(duk_hthread *thr, duk_idx_t idx); -DUK_INTERNAL_DECL duk_hcompfunc *duk_get_hcompfunc(duk_hthread *thr, duk_idx_t idx); -DUK_INTERNAL_DECL duk_hnatfunc *duk_get_hnatfunc(duk_hthread *thr, duk_idx_t idx); - -DUK_INTERNAL_DECL void *duk_get_buffer_data_raw(duk_hthread *thr, - duk_idx_t idx, - duk_size_t *out_size, - void *def_ptr, - duk_size_t def_len, - duk_bool_t throw_flag, - duk_bool_t *out_isbuffer); - -DUK_INTERNAL_DECL duk_hobject *duk_get_hobject_with_class(duk_hthread *thr, duk_idx_t idx, duk_small_uint_t classnum); - -DUK_INTERNAL_DECL duk_hobject *duk_get_hobject_promote_mask(duk_hthread *thr, duk_idx_t idx, duk_uint_t type_mask); -DUK_INTERNAL_DECL duk_hobject *duk_require_hobject_promote_mask(duk_hthread *thr, duk_idx_t idx, duk_uint_t type_mask); -DUK_INTERNAL_DECL duk_hobject *duk_require_hobject_accept_mask(duk_hthread *thr, duk_idx_t idx, duk_uint_t type_mask); -#define duk_require_hobject_promote_lfunc(thr, idx) duk_require_hobject_promote_mask((thr), (idx), DUK_TYPE_MASK_LIGHTFUNC) -#define duk_get_hobject_promote_lfunc(thr, idx) duk_get_hobject_promote_mask((thr), (idx), DUK_TYPE_MASK_LIGHTFUNC) - -#if 0 /*unused*/ -DUK_INTERNAL_DECL void *duk_get_voidptr(duk_hthread *thr, duk_idx_t idx); -#endif - -DUK_INTERNAL_DECL duk_hstring *duk_known_hstring(duk_hthread *thr, duk_idx_t idx); -DUK_INTERNAL_DECL duk_hobject *duk_known_hobject(duk_hthread *thr, duk_idx_t idx); -DUK_INTERNAL_DECL duk_hbuffer *duk_known_hbuffer(duk_hthread *thr, duk_idx_t idx); -DUK_INTERNAL_DECL duk_hcompfunc *duk_known_hcompfunc(duk_hthread *thr, duk_idx_t idx); -DUK_INTERNAL_DECL duk_hnatfunc *duk_known_hnatfunc(duk_hthread *thr, duk_idx_t idx); - -DUK_INTERNAL_DECL duk_double_t duk_to_number_tval(duk_hthread *thr, duk_tval *tv); - -DUK_INTERNAL_DECL duk_hstring *duk_to_hstring(duk_hthread *thr, duk_idx_t idx); -DUK_INTERNAL_DECL duk_hstring *duk_to_hstring_m1(duk_hthread *thr); -DUK_INTERNAL_DECL duk_hstring *duk_to_hstring_acceptsymbol(duk_hthread *thr, duk_idx_t idx); - -DUK_INTERNAL_DECL duk_hobject *duk_to_hobject(duk_hthread *thr, duk_idx_t idx); - -DUK_INTERNAL_DECL duk_double_t duk_to_number_m1(duk_hthread *thr); -DUK_INTERNAL_DECL duk_double_t duk_to_number_m2(duk_hthread *thr); - -DUK_INTERNAL_DECL duk_bool_t duk_to_boolean_top_pop(duk_hthread *thr); - -#if defined(DUK_USE_DEBUGGER_SUPPORT) /* only needed by debugger for now */ -DUK_INTERNAL_DECL duk_hstring *duk_safe_to_hstring(duk_hthread *thr, duk_idx_t idx); -#endif -DUK_INTERNAL_DECL void duk_push_class_string_tval(duk_hthread *thr, duk_tval *tv, duk_bool_t avoid_side_effects); - -DUK_INTERNAL_DECL duk_int_t duk_to_int_clamped_raw(duk_hthread *thr, - duk_idx_t idx, - duk_int_t minval, - duk_int_t maxval, - duk_bool_t *out_clamped); /* out_clamped=NULL, RangeError if outside range */ -DUK_INTERNAL_DECL duk_int_t duk_to_int_clamped(duk_hthread *thr, duk_idx_t idx, duk_int_t minval, duk_int_t maxval); -DUK_INTERNAL_DECL duk_int_t duk_to_int_check_range(duk_hthread *thr, duk_idx_t idx, duk_int_t minval, duk_int_t maxval); -#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) -DUK_INTERNAL_DECL duk_uint8_t duk_to_uint8clamped(duk_hthread *thr, duk_idx_t idx); -#endif -DUK_INTERNAL_DECL duk_hstring *duk_to_property_key_hstring(duk_hthread *thr, duk_idx_t idx); - -DUK_INTERNAL_DECL duk_hstring *duk_require_hstring(duk_hthread *thr, duk_idx_t idx); -DUK_INTERNAL_DECL duk_hstring *duk_require_hstring_notsymbol(duk_hthread *thr, duk_idx_t idx); -DUK_INTERNAL_DECL const char *duk_require_lstring_notsymbol(duk_hthread *thr, duk_idx_t idx, duk_size_t *out_len); -DUK_INTERNAL_DECL const char *duk_require_string_notsymbol(duk_hthread *thr, duk_idx_t idx); -DUK_INTERNAL_DECL duk_hobject *duk_require_hobject(duk_hthread *thr, duk_idx_t idx); -DUK_INTERNAL_DECL duk_hbuffer *duk_require_hbuffer(duk_hthread *thr, duk_idx_t idx); -DUK_INTERNAL_DECL duk_hthread *duk_require_hthread(duk_hthread *thr, duk_idx_t idx); -DUK_INTERNAL_DECL duk_hcompfunc *duk_require_hcompfunc(duk_hthread *thr, duk_idx_t idx); -DUK_INTERNAL_DECL duk_hnatfunc *duk_require_hnatfunc(duk_hthread *thr, duk_idx_t idx); - -DUK_INTERNAL_DECL duk_hobject *duk_require_hobject_with_class(duk_hthread *thr, duk_idx_t idx, duk_small_uint_t classnum); - -DUK_INTERNAL_DECL void duk_push_hstring(duk_hthread *thr, duk_hstring *h); -DUK_INTERNAL_DECL void duk_push_hstring_stridx(duk_hthread *thr, duk_small_uint_t stridx); -DUK_INTERNAL_DECL void duk_push_hstring_empty(duk_hthread *thr); -DUK_INTERNAL_DECL void duk_push_hobject(duk_hthread *thr, duk_hobject *h); -DUK_INTERNAL_DECL void duk_push_hbuffer(duk_hthread *thr, duk_hbuffer *h); -#define duk_push_hthread(thr, h) duk_push_hobject((thr), (duk_hobject *) (h)) -#define duk_push_hnatfunc(thr, h) duk_push_hobject((thr), (duk_hobject *) (h)) -DUK_INTERNAL_DECL void duk_push_hobject_bidx(duk_hthread *thr, duk_small_int_t builtin_idx); -DUK_INTERNAL_DECL duk_hobject *duk_push_object_helper(duk_hthread *thr, - duk_uint_t hobject_flags_and_class, - duk_small_int_t prototype_bidx); -DUK_INTERNAL_DECL duk_hobject *duk_push_object_helper_proto(duk_hthread *thr, - duk_uint_t hobject_flags_and_class, - duk_hobject *proto); -DUK_INTERNAL_DECL duk_hcompfunc *duk_push_hcompfunc(duk_hthread *thr); -DUK_INTERNAL_DECL duk_hboundfunc *duk_push_hboundfunc(duk_hthread *thr); -DUK_INTERNAL_DECL void duk_push_c_function_builtin(duk_hthread *thr, duk_c_function func, duk_int_t nargs); -DUK_INTERNAL_DECL void duk_push_c_function_builtin_noconstruct(duk_hthread *thr, duk_c_function func, duk_int_t nargs); - -/* XXX: duk_push_harray() and duk_push_hcompfunc() are inconsistent with - * duk_push_hobject() etc which don't create a new value. - */ -DUK_INTERNAL_DECL duk_harray *duk_push_harray(duk_hthread *thr); -DUK_INTERNAL_DECL duk_harray *duk_push_harray_with_size(duk_hthread *thr, duk_uint32_t size); -DUK_INTERNAL_DECL duk_tval *duk_push_harray_with_size_outptr(duk_hthread *thr, duk_uint32_t size); - -DUK_INTERNAL_DECL void duk_push_string_funcptr(duk_hthread *thr, duk_uint8_t *ptr, duk_size_t sz); -DUK_INTERNAL_DECL void duk_push_lightfunc_name_raw(duk_hthread *thr, duk_c_function func, duk_small_uint_t lf_flags); -DUK_INTERNAL_DECL void duk_push_lightfunc_name(duk_hthread *thr, duk_tval *tv); -DUK_INTERNAL_DECL void duk_push_lightfunc_tostring(duk_hthread *thr, duk_tval *tv); -#if 0 /* not used yet */ -DUK_INTERNAL_DECL void duk_push_hnatfunc_name(duk_hthread *thr, duk_hnatfunc *h); -#endif -#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) -DUK_INTERNAL_DECL duk_hbufobj *duk_push_bufobj_raw(duk_hthread *thr, - duk_uint_t hobject_flags_and_class, - duk_small_int_t prototype_bidx); -#endif - -DUK_INTERNAL_DECL void *duk_push_fixed_buffer_nozero(duk_hthread *thr, duk_size_t len); -DUK_INTERNAL_DECL void *duk_push_fixed_buffer_zero(duk_hthread *thr, duk_size_t len); - -DUK_INTERNAL_DECL const char *duk_push_string_readable(duk_hthread *thr, duk_idx_t idx); -DUK_INTERNAL_DECL const char *duk_push_string_tval_readable(duk_hthread *thr, duk_tval *tv); -DUK_INTERNAL_DECL const char *duk_push_string_tval_readable_error(duk_hthread *thr, duk_tval *tv); - -/* The duk_xxx_prop_stridx_short() variants expect their arguments to be short - * enough to be packed into a single 32-bit integer argument. Argument limits - * vary per call; typically 16 bits are assigned to the signed value stack index - * and the stridx. In practice these work well for footprint with constant - * arguments and such call sites are also easiest to verify to be correct. - */ - -DUK_INTERNAL_DECL duk_bool_t duk_get_prop_stridx(duk_hthread *thr, duk_idx_t obj_idx, duk_small_uint_t stridx); /* [] -> [val] */ -DUK_INTERNAL_DECL duk_bool_t duk_get_prop_stridx_short_raw(duk_hthread *thr, duk_uint_t packed_args); -#define duk_get_prop_stridx_short(thr, obj_idx, stridx) \ - (DUK_ASSERT_EXPR((duk_int_t) (obj_idx) >= -0x8000L && (duk_int_t) (obj_idx) <= 0x7fffL), \ - DUK_ASSERT_EXPR((duk_int_t) (stridx) >= 0 && (duk_int_t) (stridx) <= 0xffffL), \ - duk_get_prop_stridx_short_raw((thr), (((duk_uint_t) (obj_idx)) << 16) + ((duk_uint_t) (stridx)))) -DUK_INTERNAL_DECL duk_bool_t duk_get_prop_stridx_boolean(duk_hthread *thr, - duk_idx_t obj_idx, - duk_small_uint_t stridx, - duk_bool_t *out_has_prop); /* [] -> [] */ - -DUK_INTERNAL_DECL duk_bool_t duk_xget_owndataprop(duk_hthread *thr, duk_idx_t obj_idx); -DUK_INTERNAL_DECL duk_bool_t duk_xget_owndataprop_stridx(duk_hthread *thr, duk_idx_t obj_idx, duk_small_uint_t stridx); -DUK_INTERNAL_DECL duk_bool_t duk_xget_owndataprop_stridx_short_raw(duk_hthread *thr, duk_uint_t packed_args); -#define duk_xget_owndataprop_stridx_short(thr, obj_idx, stridx) \ - (DUK_ASSERT_EXPR((duk_int_t) (obj_idx) >= -0x8000L && (duk_int_t) (obj_idx) <= 0x7fffL), \ - DUK_ASSERT_EXPR((duk_int_t) (stridx) >= 0 && (duk_int_t) (stridx) <= 0xffffL), \ - duk_xget_owndataprop_stridx_short_raw((thr), (((duk_uint_t) (obj_idx)) << 16) + ((duk_uint_t) (stridx)))) - -DUK_INTERNAL_DECL duk_bool_t duk_put_prop_stridx(duk_hthread *thr, duk_idx_t obj_idx, duk_small_uint_t stridx); /* [val] -> [] */ -DUK_INTERNAL_DECL duk_bool_t duk_put_prop_stridx_short_raw(duk_hthread *thr, duk_uint_t packed_args); -#define duk_put_prop_stridx_short(thr, obj_idx, stridx) \ - (DUK_ASSERT_EXPR((duk_int_t) (obj_idx) >= -0x8000L && (duk_int_t) (obj_idx) <= 0x7fffL), \ - DUK_ASSERT_EXPR((duk_int_t) (stridx) >= 0 && (duk_int_t) (stridx) <= 0xffffL), \ - duk_put_prop_stridx_short_raw((thr), (((duk_uint_t) (obj_idx)) << 16) + ((duk_uint_t) (stridx)))) - -DUK_INTERNAL_DECL duk_bool_t duk_del_prop_stridx(duk_hthread *thr, duk_idx_t obj_idx, duk_small_uint_t stridx); /* [] -> [] */ -#if 0 /* Too few call sites to be useful. */ -DUK_INTERNAL_DECL duk_bool_t duk_del_prop_stridx_short_raw(duk_hthread *thr, duk_uint_t packed_args); -#define duk_del_prop_stridx_short(thr, obj_idx, stridx) \ - (DUK_ASSERT_EXPR((obj_idx) >= -0x8000L && (obj_idx) <= 0x7fffL), \ - DUK_ASSERT_EXPR((stridx) >= 0 && (stridx) <= 0xffffL), \ - duk_del_prop_stridx_short_raw((thr), (((duk_uint_t) (obj_idx)) << 16) + ((duk_uint_t) (stridx)))) -#endif -#define duk_del_prop_stridx_short(thr, obj_idx, stridx) duk_del_prop_stridx((thr), (obj_idx), (stridx)) - -DUK_INTERNAL_DECL duk_bool_t duk_has_prop_stridx(duk_hthread *thr, duk_idx_t obj_idx, duk_small_uint_t stridx); /* [] -> [] */ -#if 0 /* Too few call sites to be useful. */ -DUK_INTERNAL_DECL duk_bool_t duk_has_prop_stridx_short_raw(duk_hthread *thr, duk_uint_t packed_args); -#define duk_has_prop_stridx_short(thr, obj_idx, stridx) \ - (DUK_ASSERT_EXPR((obj_idx) >= -0x8000L && (obj_idx) <= 0x7fffL), \ - DUK_ASSERT_EXPR((stridx) >= 0 && (stridx) <= 0xffffL), \ - duk_has_prop_stridx_short_raw((thr), (((duk_uint_t) (obj_idx)) << 16) + ((duk_uint_t) (stridx)))) -#endif -#define duk_has_prop_stridx_short(thr, obj_idx, stridx) duk_has_prop_stridx((thr), (obj_idx), (stridx)) - -DUK_INTERNAL_DECL void duk_xdef_prop(duk_hthread *thr, duk_idx_t obj_idx, duk_small_uint_t desc_flags); /* [key val] -> [] */ - -DUK_INTERNAL_DECL void duk_xdef_prop_index(duk_hthread *thr, - duk_idx_t obj_idx, - duk_uarridx_t arr_idx, - duk_small_uint_t desc_flags); /* [val] -> [] */ - -/* XXX: Because stridx and desc_flags have a limited range, this call could - * always pack stridx and desc_flags into a single argument. - */ -DUK_INTERNAL_DECL void duk_xdef_prop_stridx(duk_hthread *thr, - duk_idx_t obj_idx, - duk_small_uint_t stridx, - duk_small_uint_t desc_flags); /* [val] -> [] */ -DUK_INTERNAL_DECL void duk_xdef_prop_stridx_short_raw(duk_hthread *thr, duk_uint_t packed_args); -#define duk_xdef_prop_stridx_short(thr, obj_idx, stridx, desc_flags) \ - (DUK_ASSERT_EXPR((duk_int_t) (obj_idx) >= -0x80L && (duk_int_t) (obj_idx) <= 0x7fL), \ - DUK_ASSERT_EXPR((duk_int_t) (stridx) >= 0 && (duk_int_t) (stridx) <= 0xffffL), \ - DUK_ASSERT_EXPR((duk_int_t) (desc_flags) >= 0 && (duk_int_t) (desc_flags) <= 0xffL), \ - duk_xdef_prop_stridx_short_raw((thr), \ - (((duk_uint_t) (obj_idx)) << 24) + (((duk_uint_t) (stridx)) << 8) + \ - (duk_uint_t) (desc_flags))) - -#define duk_xdef_prop_wec(thr, obj_idx) duk_xdef_prop((thr), (obj_idx), DUK_PROPDESC_FLAGS_WEC) -#define duk_xdef_prop_index_wec(thr, obj_idx, arr_idx) duk_xdef_prop_index((thr), (obj_idx), (arr_idx), DUK_PROPDESC_FLAGS_WEC) -#define duk_xdef_prop_stridx_wec(thr, obj_idx, stridx) duk_xdef_prop_stridx((thr), (obj_idx), (stridx), DUK_PROPDESC_FLAGS_WEC) -#define duk_xdef_prop_stridx_short_wec(thr, obj_idx, stridx) \ - duk_xdef_prop_stridx_short((thr), (obj_idx), (stridx), DUK_PROPDESC_FLAGS_WEC) - -#if 0 /*unused*/ -DUK_INTERNAL_DECL void duk_xdef_prop_stridx_builtin(duk_hthread *thr, duk_idx_t obj_idx, duk_small_uint_t stridx, duk_small_int_t builtin_idx, duk_small_uint_t desc_flags); /* [] -> [] */ -#endif - -DUK_INTERNAL_DECL void duk_xdef_prop_stridx_thrower(duk_hthread *thr, duk_idx_t obj_idx, duk_small_uint_t stridx); /* [] -> [] */ - -DUK_INTERNAL_DECL duk_bool_t duk_get_method_stridx(duk_hthread *thr, duk_idx_t idx, duk_small_uint_t stridx); - -DUK_INTERNAL_DECL void duk_pack(duk_hthread *thr, duk_idx_t count); -DUK_INTERNAL_DECL duk_idx_t duk_unpack_array_like(duk_hthread *thr, duk_idx_t idx); -#if 0 -DUK_INTERNAL_DECL void duk_unpack(duk_hthread *thr); -#endif - -DUK_INTERNAL_DECL void duk_push_symbol_descriptive_string(duk_hthread *thr, duk_hstring *h); - -DUK_INTERNAL_DECL void duk_resolve_nonbound_function(duk_hthread *thr); - -DUK_INTERNAL_DECL duk_idx_t duk_get_top_require_min(duk_hthread *thr, duk_idx_t min_top); -DUK_INTERNAL_DECL duk_idx_t duk_get_top_index_unsafe(duk_hthread *thr); - -DUK_INTERNAL_DECL void duk_pop_n_unsafe(duk_hthread *thr, duk_idx_t count); -DUK_INTERNAL_DECL void duk_pop_unsafe(duk_hthread *thr); -DUK_INTERNAL_DECL void duk_pop_2_unsafe(duk_hthread *thr); -DUK_INTERNAL_DECL void duk_pop_3_unsafe(duk_hthread *thr); -DUK_INTERNAL_DECL void duk_pop_n_nodecref_unsafe(duk_hthread *thr, duk_idx_t count); -DUK_INTERNAL_DECL void duk_pop_nodecref_unsafe(duk_hthread *thr); -DUK_INTERNAL_DECL void duk_pop_2_nodecref_unsafe(duk_hthread *thr); -DUK_INTERNAL_DECL void duk_pop_3_nodecref_unsafe(duk_hthread *thr); -DUK_INTERNAL_DECL void duk_pop_undefined(duk_hthread *thr); - -DUK_INTERNAL_DECL void duk_compact_m1(duk_hthread *thr); - -DUK_INTERNAL_DECL void duk_seal_freeze_raw(duk_hthread *thr, duk_idx_t obj_idx, duk_bool_t is_freeze); - -DUK_INTERNAL_DECL void duk_insert_undefined(duk_hthread *thr, duk_idx_t idx); -DUK_INTERNAL_DECL void duk_insert_undefined_n(duk_hthread *thr, duk_idx_t idx, duk_idx_t count); - -DUK_INTERNAL_DECL void duk_concat_2(duk_hthread *thr); - -DUK_INTERNAL_DECL duk_int_t duk_pcall_method_flags(duk_hthread *thr, duk_idx_t nargs, duk_small_uint_t call_flags); - -#if defined(DUK_USE_SYMBOL_BUILTIN) -DUK_INTERNAL_DECL void duk_to_primitive_ordinary(duk_hthread *thr, duk_idx_t idx, duk_int_t hint); -#endif - -DUK_INTERNAL_DECL void duk_clear_prototype(duk_hthread *thr, duk_idx_t idx); - -/* Raw internal valstack access macros: access is unsafe so call site - * must have a guarantee that the index is valid. When that is the case, - * using these macro results in faster and smaller code than duk_get_tval(). - * Both 'ctx' and 'idx' are evaluted multiple times, but only for asserts. - */ -#define DUK_ASSERT_VALID_NEGIDX(thr, idx) \ - (DUK_ASSERT_EXPR((duk_int_t) (idx) < 0), DUK_ASSERT_EXPR(duk_is_valid_index((thr), (idx)))) -#define DUK_ASSERT_VALID_POSIDX(thr, idx) \ - (DUK_ASSERT_EXPR((duk_int_t) (idx) >= 0), DUK_ASSERT_EXPR(duk_is_valid_index((thr), (idx)))) -#define DUK_GET_TVAL_NEGIDX(thr, idx) (DUK_ASSERT_VALID_NEGIDX((thr), (idx)), ((duk_hthread *) (thr))->valstack_top + (idx)) -#define DUK_GET_TVAL_POSIDX(thr, idx) (DUK_ASSERT_VALID_POSIDX((thr), (idx)), ((duk_hthread *) (thr))->valstack_bottom + (idx)) -#define DUK_GET_HOBJECT_NEGIDX(thr, idx) \ - (DUK_ASSERT_VALID_NEGIDX((thr), (idx)), DUK_TVAL_GET_OBJECT(((duk_hthread *) (thr))->valstack_top + (idx))) -#define DUK_GET_HOBJECT_POSIDX(thr, idx) \ - (DUK_ASSERT_VALID_POSIDX((thr), (idx)), DUK_TVAL_GET_OBJECT(((duk_hthread *) (thr))->valstack_bottom + (idx))) - -#define DUK_GET_THIS_TVAL_PTR(thr) (DUK_ASSERT_EXPR((thr)->valstack_bottom > (thr)->valstack), (thr)->valstack_bottom - 1) - -DUK_INTERNAL_DECL duk_double_t duk_time_get_ecmascript_time(duk_hthread *thr); -DUK_INTERNAL_DECL duk_double_t duk_time_get_ecmascript_time_nofrac(duk_hthread *thr); -DUK_INTERNAL_DECL duk_double_t duk_time_get_monotonic_time(duk_hthread *thr); - -#endif /* DUK_API_INTERNAL_H_INCLUDED */ -/* #include duk_hstring.h */ -#line 1 "duk_hstring.h" -/* - * Heap string representation. - * - * Strings are byte sequences ordinarily stored in extended UTF-8 format, - * allowing values larger than the official UTF-8 range (used internally) - * and also allowing UTF-8 encoding of surrogate pairs (CESU-8 format). - * Strings may also be invalid UTF-8 altogether which is the case e.g. with - * strings used as internal property names and raw buffers converted to - * strings. In such cases the 'clen' field contains an inaccurate value. - * - * ECMAScript requires support for 32-bit long strings. However, since each - * 16-bit codepoint can take 3 bytes in CESU-8, this representation can only - * support about 1.4G codepoint long strings in extreme cases. This is not - * really a practical issue. - */ - -#if !defined(DUK_HSTRING_H_INCLUDED) -#define DUK_HSTRING_H_INCLUDED - -/* Impose a maximum string length for now. Restricted artificially to - * ensure adding a heap header length won't overflow size_t. The limit - * should be synchronized with DUK_HBUFFER_MAX_BYTELEN. - * - * E5.1 makes provisions to support strings longer than 4G characters. - * This limit should be eliminated on 64-bit platforms (and increased - * closer to maximum support on 32-bit platforms). - */ - -#if defined(DUK_USE_STRLEN16) -#define DUK_HSTRING_MAX_BYTELEN (0x0000ffffUL) -#else -#define DUK_HSTRING_MAX_BYTELEN (0x7fffffffUL) -#endif - -/* XXX: could add flags for "is valid CESU-8" (ECMAScript compatible strings), - * "is valid UTF-8", "is valid extended UTF-8" (internal strings are not, - * regexp bytecode is), and "contains non-BMP characters". These are not - * needed right now. - */ - -/* With lowmem builds the high 16 bits of duk_heaphdr are used for other - * purposes, so this leaves 7 duk_heaphdr flags and 9 duk_hstring flags. - */ -#define DUK_HSTRING_FLAG_ASCII DUK_HEAPHDR_USER_FLAG(0) /* string is ASCII, clen == blen */ -#define DUK_HSTRING_FLAG_ARRIDX DUK_HEAPHDR_USER_FLAG(1) /* string is a valid array index */ -#define DUK_HSTRING_FLAG_SYMBOL DUK_HEAPHDR_USER_FLAG(2) /* string is a symbol (invalid utf-8) */ -#define DUK_HSTRING_FLAG_HIDDEN \ - DUK_HEAPHDR_USER_FLAG(3) /* string is a hidden symbol (implies symbol, Duktape 1.x internal string) */ -#define DUK_HSTRING_FLAG_RESERVED_WORD DUK_HEAPHDR_USER_FLAG(4) /* string is a reserved word (non-strict) */ -#define DUK_HSTRING_FLAG_STRICT_RESERVED_WORD DUK_HEAPHDR_USER_FLAG(5) /* string is a reserved word (strict) */ -#define DUK_HSTRING_FLAG_EVAL_OR_ARGUMENTS DUK_HEAPHDR_USER_FLAG(6) /* string is 'eval' or 'arguments' */ -#define DUK_HSTRING_FLAG_EXTDATA DUK_HEAPHDR_USER_FLAG(7) /* string data is external (duk_hstring_external) */ -#define DUK_HSTRING_FLAG_PINNED_LITERAL DUK_HEAPHDR_USER_FLAG(8) /* string is a literal, and pinned */ - -#define DUK_HSTRING_HAS_ASCII(x) DUK_HEAPHDR_CHECK_FLAG_BITS(&(x)->hdr, DUK_HSTRING_FLAG_ASCII) -#define DUK_HSTRING_HAS_ARRIDX(x) DUK_HEAPHDR_CHECK_FLAG_BITS(&(x)->hdr, DUK_HSTRING_FLAG_ARRIDX) -#define DUK_HSTRING_HAS_SYMBOL(x) DUK_HEAPHDR_CHECK_FLAG_BITS(&(x)->hdr, DUK_HSTRING_FLAG_SYMBOL) -#define DUK_HSTRING_HAS_HIDDEN(x) DUK_HEAPHDR_CHECK_FLAG_BITS(&(x)->hdr, DUK_HSTRING_FLAG_HIDDEN) -#define DUK_HSTRING_HAS_RESERVED_WORD(x) DUK_HEAPHDR_CHECK_FLAG_BITS(&(x)->hdr, DUK_HSTRING_FLAG_RESERVED_WORD) -#define DUK_HSTRING_HAS_STRICT_RESERVED_WORD(x) DUK_HEAPHDR_CHECK_FLAG_BITS(&(x)->hdr, DUK_HSTRING_FLAG_STRICT_RESERVED_WORD) -#define DUK_HSTRING_HAS_EVAL_OR_ARGUMENTS(x) DUK_HEAPHDR_CHECK_FLAG_BITS(&(x)->hdr, DUK_HSTRING_FLAG_EVAL_OR_ARGUMENTS) -#define DUK_HSTRING_HAS_EXTDATA(x) DUK_HEAPHDR_CHECK_FLAG_BITS(&(x)->hdr, DUK_HSTRING_FLAG_EXTDATA) -#define DUK_HSTRING_HAS_PINNED_LITERAL(x) DUK_HEAPHDR_CHECK_FLAG_BITS(&(x)->hdr, DUK_HSTRING_FLAG_PINNED_LITERAL) - -#define DUK_HSTRING_SET_ASCII(x) DUK_HEAPHDR_SET_FLAG_BITS(&(x)->hdr, DUK_HSTRING_FLAG_ASCII) -#define DUK_HSTRING_SET_ARRIDX(x) DUK_HEAPHDR_SET_FLAG_BITS(&(x)->hdr, DUK_HSTRING_FLAG_ARRIDX) -#define DUK_HSTRING_SET_SYMBOL(x) DUK_HEAPHDR_SET_FLAG_BITS(&(x)->hdr, DUK_HSTRING_FLAG_SYMBOL) -#define DUK_HSTRING_SET_HIDDEN(x) DUK_HEAPHDR_SET_FLAG_BITS(&(x)->hdr, DUK_HSTRING_FLAG_HIDDEN) -#define DUK_HSTRING_SET_RESERVED_WORD(x) DUK_HEAPHDR_SET_FLAG_BITS(&(x)->hdr, DUK_HSTRING_FLAG_RESERVED_WORD) -#define DUK_HSTRING_SET_STRICT_RESERVED_WORD(x) DUK_HEAPHDR_SET_FLAG_BITS(&(x)->hdr, DUK_HSTRING_FLAG_STRICT_RESERVED_WORD) -#define DUK_HSTRING_SET_EVAL_OR_ARGUMENTS(x) DUK_HEAPHDR_SET_FLAG_BITS(&(x)->hdr, DUK_HSTRING_FLAG_EVAL_OR_ARGUMENTS) -#define DUK_HSTRING_SET_EXTDATA(x) DUK_HEAPHDR_SET_FLAG_BITS(&(x)->hdr, DUK_HSTRING_FLAG_EXTDATA) -#define DUK_HSTRING_SET_PINNED_LITERAL(x) DUK_HEAPHDR_SET_FLAG_BITS(&(x)->hdr, DUK_HSTRING_FLAG_PINNED_LITERAL) - -#define DUK_HSTRING_CLEAR_ASCII(x) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(x)->hdr, DUK_HSTRING_FLAG_ASCII) -#define DUK_HSTRING_CLEAR_ARRIDX(x) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(x)->hdr, DUK_HSTRING_FLAG_ARRIDX) -#define DUK_HSTRING_CLEAR_SYMBOL(x) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(x)->hdr, DUK_HSTRING_FLAG_SYMBOL) -#define DUK_HSTRING_CLEAR_HIDDEN(x) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(x)->hdr, DUK_HSTRING_FLAG_HIDDEN) -#define DUK_HSTRING_CLEAR_RESERVED_WORD(x) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(x)->hdr, DUK_HSTRING_FLAG_RESERVED_WORD) -#define DUK_HSTRING_CLEAR_STRICT_RESERVED_WORD(x) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(x)->hdr, DUK_HSTRING_FLAG_STRICT_RESERVED_WORD) -#define DUK_HSTRING_CLEAR_EVAL_OR_ARGUMENTS(x) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(x)->hdr, DUK_HSTRING_FLAG_EVAL_OR_ARGUMENTS) -#define DUK_HSTRING_CLEAR_EXTDATA(x) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(x)->hdr, DUK_HSTRING_FLAG_EXTDATA) -#define DUK_HSTRING_CLEAR_PINNED_LITERAL(x) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(x)->hdr, DUK_HSTRING_FLAG_PINNED_LITERAL) - -#if 0 /* Slightly smaller code without explicit flag, but explicit flag \ - * is very useful when 'clen' is dropped. \ - */ -#define DUK_HSTRING_IS_ASCII(x) (DUK_HSTRING_GET_BYTELEN((x)) == DUK_HSTRING_GET_CHARLEN((x))) -#endif -#define DUK_HSTRING_IS_ASCII(x) DUK_HSTRING_HAS_ASCII((x)) /* lazily set! */ -#define DUK_HSTRING_IS_EMPTY(x) (DUK_HSTRING_GET_BYTELEN((x)) == 0) - -#if defined(DUK_USE_STRHASH16) -#define DUK_HSTRING_GET_HASH(x) ((x)->hdr.h_flags >> 16) -#define DUK_HSTRING_SET_HASH(x, v) \ - do { \ - (x)->hdr.h_flags = ((x)->hdr.h_flags & 0x0000ffffUL) | ((v) << 16); \ - } while (0) -#else -#define DUK_HSTRING_GET_HASH(x) ((x)->hash) -#define DUK_HSTRING_SET_HASH(x, v) \ - do { \ - (x)->hash = (v); \ - } while (0) -#endif - -#if defined(DUK_USE_STRLEN16) -#define DUK_HSTRING_GET_BYTELEN(x) ((x)->hdr.h_strextra16) -#define DUK_HSTRING_SET_BYTELEN(x, v) \ - do { \ - (x)->hdr.h_strextra16 = (v); \ - } while (0) -#if defined(DUK_USE_HSTRING_CLEN) -#define DUK_HSTRING_GET_CHARLEN(x) duk_hstring_get_charlen((x)) -#define DUK_HSTRING_SET_CHARLEN(x, v) \ - do { \ - (x)->clen16 = (v); \ - } while (0) -#else -#define DUK_HSTRING_GET_CHARLEN(x) duk_hstring_get_charlen((x)) -#define DUK_HSTRING_SET_CHARLEN(x, v) \ - do { \ - DUK_ASSERT(0); /* should never be called */ \ - } while (0) -#endif -#else -#define DUK_HSTRING_GET_BYTELEN(x) ((x)->blen) -#define DUK_HSTRING_SET_BYTELEN(x, v) \ - do { \ - (x)->blen = (v); \ - } while (0) -#define DUK_HSTRING_GET_CHARLEN(x) duk_hstring_get_charlen((x)) -#define DUK_HSTRING_SET_CHARLEN(x, v) \ - do { \ - (x)->clen = (v); \ - } while (0) -#endif - -#if defined(DUK_USE_HSTRING_EXTDATA) -#define DUK_HSTRING_GET_EXTDATA(x) ((x)->extdata) -#define DUK_HSTRING_GET_DATA(x) \ - (DUK_HSTRING_HAS_EXTDATA((x)) ? DUK_HSTRING_GET_EXTDATA((const duk_hstring_external *) (x)) : \ - ((const duk_uint8_t *) ((x) + 1))) -#else -#define DUK_HSTRING_GET_DATA(x) ((const duk_uint8_t *) ((x) + 1)) -#endif - -#define DUK_HSTRING_GET_DATA_END(x) (DUK_HSTRING_GET_DATA((x)) + (x)->blen) - -/* Marker value; in E5 2^32-1 is not a valid array index (2^32-2 is highest - * valid). - */ -#define DUK_HSTRING_NO_ARRAY_INDEX (0xffffffffUL) - -#if defined(DUK_USE_HSTRING_ARRIDX) -#define DUK_HSTRING_GET_ARRIDX_FAST(h) ((h)->arridx) -#define DUK_HSTRING_GET_ARRIDX_SLOW(h) ((h)->arridx) -#else -/* Get array index related to string (or return DUK_HSTRING_NO_ARRAY_INDEX); - * avoids helper call if string has no array index value. - */ -#define DUK_HSTRING_GET_ARRIDX_FAST(h) \ - (DUK_HSTRING_HAS_ARRIDX((h)) ? duk_js_to_arrayindex_hstring_fast_known((h)) : DUK_HSTRING_NO_ARRAY_INDEX) - -/* Slower but more compact variant. */ -#define DUK_HSTRING_GET_ARRIDX_SLOW(h) (duk_js_to_arrayindex_hstring_fast((h))) -#endif - -/* XXX: these actually fit into duk_hstring */ -#define DUK_SYMBOL_TYPE_HIDDEN 0 -#define DUK_SYMBOL_TYPE_GLOBAL 1 -#define DUK_SYMBOL_TYPE_LOCAL 2 -#define DUK_SYMBOL_TYPE_WELLKNOWN 3 - -/* Assertion for duk_hstring validity. */ -#if defined(DUK_USE_ASSERTIONS) -DUK_INTERNAL_DECL void duk_hstring_assert_valid(duk_hstring *h); -#define DUK_HSTRING_ASSERT_VALID(h) \ - do { \ - duk_hstring_assert_valid((h)); \ - } while (0) -#else -#define DUK_HSTRING_ASSERT_VALID(h) \ - do { \ - } while (0) -#endif - -/* - * Misc - */ - -struct duk_hstring { - /* Smaller heaphdr than for other objects, because strings are held - * in string intern table which requires no link pointers. Much of - * the 32-bit flags field is unused by flags, so we can stuff a 16-bit - * field in there. - */ - duk_heaphdr_string hdr; - - /* String hash. */ -#if defined(DUK_USE_STRHASH16) - /* If 16-bit hash is in use, stuff it into duk_heaphdr_string flags. */ -#else - duk_uint32_t hash; -#endif - - /* Precomputed array index (or DUK_HSTRING_NO_ARRAY_INDEX). */ -#if defined(DUK_USE_HSTRING_ARRIDX) - duk_uarridx_t arridx; -#endif - - /* Length in bytes (not counting NUL term). */ -#if defined(DUK_USE_STRLEN16) - /* placed in duk_heaphdr_string */ -#else - duk_uint32_t blen; -#endif - - /* Length in codepoints (must be E5 compatible). */ -#if defined(DUK_USE_STRLEN16) -#if defined(DUK_USE_HSTRING_CLEN) - duk_uint16_t clen16; -#else - /* computed live */ -#endif -#else - duk_uint32_t clen; -#endif - - /* - * String data of 'blen+1' bytes follows (+1 for NUL termination - * convenience for C API). No alignment needs to be guaranteed - * for strings, but fields above should guarantee alignment-by-4 - * (but not alignment-by-8). - */ -}; - -/* The external string struct is defined even when the feature is inactive. */ -struct duk_hstring_external { - duk_hstring str; - - /* - * For an external string, the NUL-terminated string data is stored - * externally. The user must guarantee that data behind this pointer - * doesn't change while it's used. - */ - - const duk_uint8_t *extdata; -}; - -/* - * Prototypes - */ - -DUK_INTERNAL_DECL duk_ucodepoint_t duk_hstring_char_code_at_raw(duk_hthread *thr, - duk_hstring *h, - duk_uint_t pos, - duk_bool_t surrogate_aware); -DUK_INTERNAL_DECL duk_bool_t duk_hstring_equals_ascii_cstring(duk_hstring *h, const char *cstr); -DUK_INTERNAL_DECL duk_size_t duk_hstring_get_charlen(duk_hstring *h); -#if !defined(DUK_USE_HSTRING_LAZY_CLEN) -DUK_INTERNAL_DECL void duk_hstring_init_charlen(duk_hstring *h); -#endif - -#endif /* DUK_HSTRING_H_INCLUDED */ -/* #include duk_hobject.h */ -#line 1 "duk_hobject.h" -/* - * Heap object representation. - * - * Heap objects are used for ECMAScript objects, arrays, and functions, - * but also for internal control like declarative and object environment - * records. Compiled functions, native functions, and threads are also - * objects but with an extended C struct. - * - * Objects provide the required ECMAScript semantics and exotic behaviors - * especially for property access. - * - * Properties are stored in three conceptual parts: - * - * 1. A linear 'entry part' contains ordered key-value-attributes triples - * and is the main method of string properties. - * - * 2. An optional linear 'array part' is used for array objects to store a - * (dense) range of [0,N[ array indexed entries with default attributes - * (writable, enumerable, configurable). If the array part would become - * sparse or non-default attributes are required, the array part is - * abandoned and moved to the 'entry part'. - * - * 3. An optional 'hash part' is used to optimize lookups of the entry - * part; it is used only for objects with sufficiently many properties - * and can be abandoned without loss of information. - * - * These three conceptual parts are stored in a single memory allocated area. - * This minimizes memory allocation overhead but also means that all three - * parts are resized together, and makes property access a bit complicated. - */ - -#if !defined(DUK_HOBJECT_H_INCLUDED) -#define DUK_HOBJECT_H_INCLUDED - -/* Object flags. Make sure this stays in sync with debugger object - * inspection code. - */ - -/* XXX: some flags are object subtype specific (e.g. common to all function - * subtypes, duk_harray, etc) and could be reused for different subtypes. - */ -#define DUK_HOBJECT_FLAG_EXTENSIBLE DUK_HEAPHDR_USER_FLAG(0) /* object is extensible */ -#define DUK_HOBJECT_FLAG_CONSTRUCTABLE DUK_HEAPHDR_USER_FLAG(1) /* object is constructable */ -#define DUK_HOBJECT_FLAG_CALLABLE DUK_HEAPHDR_USER_FLAG(2) /* object is callable */ -#define DUK_HOBJECT_FLAG_BOUNDFUNC DUK_HEAPHDR_USER_FLAG(3) /* object established using Function.prototype.bind() */ -#define DUK_HOBJECT_FLAG_COMPFUNC DUK_HEAPHDR_USER_FLAG(4) /* object is a compiled function (duk_hcompfunc) */ -#define DUK_HOBJECT_FLAG_NATFUNC DUK_HEAPHDR_USER_FLAG(5) /* object is a native function (duk_hnatfunc) */ -#define DUK_HOBJECT_FLAG_BUFOBJ DUK_HEAPHDR_USER_FLAG(6) /* object is a buffer object (duk_hbufobj) (always exotic) */ -#define DUK_HOBJECT_FLAG_FASTREFS \ - DUK_HEAPHDR_USER_FLAG(7) /* object has no fields needing DECREF/marking beyond base duk_hobject header */ -#define DUK_HOBJECT_FLAG_ARRAY_PART DUK_HEAPHDR_USER_FLAG(8) /* object has an array part (a_size may still be 0) */ -#define DUK_HOBJECT_FLAG_STRICT DUK_HEAPHDR_USER_FLAG(9) /* function: function object is strict */ -#define DUK_HOBJECT_FLAG_NOTAIL DUK_HEAPHDR_USER_FLAG(10) /* function: function must not be tail called */ -#define DUK_HOBJECT_FLAG_NEWENV DUK_HEAPHDR_USER_FLAG(11) /* function: create new environment when called (see duk_hcompfunc) */ -#define DUK_HOBJECT_FLAG_NAMEBINDING \ - DUK_HEAPHDR_USER_FLAG( \ - 12) /* function: create binding for func name (function templates only, used for named function expressions) */ -#define DUK_HOBJECT_FLAG_CREATEARGS DUK_HEAPHDR_USER_FLAG(13) /* function: create an arguments object on function call */ -#define DUK_HOBJECT_FLAG_HAVE_FINALIZER DUK_HEAPHDR_USER_FLAG(14) /* object has a callable (own) finalizer property */ -#define DUK_HOBJECT_FLAG_EXOTIC_ARRAY DUK_HEAPHDR_USER_FLAG(15) /* 'Array' object, array length and index exotic behavior */ -#define DUK_HOBJECT_FLAG_EXOTIC_STRINGOBJ DUK_HEAPHDR_USER_FLAG(16) /* 'String' object, array index exotic behavior */ -#define DUK_HOBJECT_FLAG_EXOTIC_ARGUMENTS \ - DUK_HEAPHDR_USER_FLAG(17) /* 'Arguments' object and has arguments exotic behavior (non-strict callee) */ -#define DUK_HOBJECT_FLAG_EXOTIC_PROXYOBJ DUK_HEAPHDR_USER_FLAG(18) /* 'Proxy' object */ -#define DUK_HOBJECT_FLAG_SPECIAL_CALL DUK_HEAPHDR_USER_FLAG(19) /* special casing in call behavior, for .call(), .apply(), etc. */ - -#define DUK_HOBJECT_FLAG_CLASS_BASE DUK_HEAPHDR_USER_FLAG_NUMBER(20) -#define DUK_HOBJECT_FLAG_CLASS_BITS 5 - -#define DUK_HOBJECT_GET_CLASS_NUMBER(h) \ - DUK_HEAPHDR_GET_FLAG_RANGE(&(h)->hdr, DUK_HOBJECT_FLAG_CLASS_BASE, DUK_HOBJECT_FLAG_CLASS_BITS) -#define DUK_HOBJECT_SET_CLASS_NUMBER(h, v) \ - DUK_HEAPHDR_SET_FLAG_RANGE(&(h)->hdr, DUK_HOBJECT_FLAG_CLASS_BASE, DUK_HOBJECT_FLAG_CLASS_BITS, (v)) - -#define DUK_HOBJECT_GET_CLASS_MASK(h) \ - (1UL << DUK_HEAPHDR_GET_FLAG_RANGE(&(h)->hdr, DUK_HOBJECT_FLAG_CLASS_BASE, DUK_HOBJECT_FLAG_CLASS_BITS)) - -/* Macro for creating flag initializer from a class number. - * Unsigned type cast is needed to avoid warnings about coercing - * a signed integer to an unsigned one; the largest class values - * have the highest bit (bit 31) set which causes this. - */ -#define DUK_HOBJECT_CLASS_AS_FLAGS(v) (((duk_uint_t) (v)) << DUK_HOBJECT_FLAG_CLASS_BASE) - -/* E5 Section 8.6.2 + custom classes */ -#define DUK_HOBJECT_CLASS_NONE 0 -#define DUK_HOBJECT_CLASS_OBJECT 1 -#define DUK_HOBJECT_CLASS_ARRAY 2 -#define DUK_HOBJECT_CLASS_FUNCTION 3 -#define DUK_HOBJECT_CLASS_ARGUMENTS 4 -#define DUK_HOBJECT_CLASS_BOOLEAN 5 -#define DUK_HOBJECT_CLASS_DATE 6 -#define DUK_HOBJECT_CLASS_ERROR 7 -#define DUK_HOBJECT_CLASS_JSON 8 -#define DUK_HOBJECT_CLASS_MATH 9 -#define DUK_HOBJECT_CLASS_NUMBER 10 -#define DUK_HOBJECT_CLASS_REGEXP 11 -#define DUK_HOBJECT_CLASS_STRING 12 -#define DUK_HOBJECT_CLASS_GLOBAL 13 -#define DUK_HOBJECT_CLASS_SYMBOL 14 -#define DUK_HOBJECT_CLASS_OBJENV 15 /* custom */ -#define DUK_HOBJECT_CLASS_DECENV 16 /* custom */ -#define DUK_HOBJECT_CLASS_POINTER 17 /* custom */ -#define DUK_HOBJECT_CLASS_THREAD 18 /* custom; implies DUK_HOBJECT_IS_THREAD */ -#define DUK_HOBJECT_CLASS_BUFOBJ_MIN 19 -#define DUK_HOBJECT_CLASS_ARRAYBUFFER 19 /* implies DUK_HOBJECT_IS_BUFOBJ */ -#define DUK_HOBJECT_CLASS_DATAVIEW 20 -#define DUK_HOBJECT_CLASS_INT8ARRAY 21 -#define DUK_HOBJECT_CLASS_UINT8ARRAY 22 -#define DUK_HOBJECT_CLASS_UINT8CLAMPEDARRAY 23 -#define DUK_HOBJECT_CLASS_INT16ARRAY 24 -#define DUK_HOBJECT_CLASS_UINT16ARRAY 25 -#define DUK_HOBJECT_CLASS_INT32ARRAY 26 -#define DUK_HOBJECT_CLASS_UINT32ARRAY 27 -#define DUK_HOBJECT_CLASS_FLOAT32ARRAY 28 -#define DUK_HOBJECT_CLASS_FLOAT64ARRAY 29 -#define DUK_HOBJECT_CLASS_BUFOBJ_MAX 29 -#define DUK_HOBJECT_CLASS_MAX 29 - -/* Class masks. */ -#define DUK_HOBJECT_CMASK_ALL ((1UL << (DUK_HOBJECT_CLASS_MAX + 1)) - 1UL) -#define DUK_HOBJECT_CMASK_NONE (1UL << DUK_HOBJECT_CLASS_NONE) -#define DUK_HOBJECT_CMASK_ARGUMENTS (1UL << DUK_HOBJECT_CLASS_ARGUMENTS) -#define DUK_HOBJECT_CMASK_ARRAY (1UL << DUK_HOBJECT_CLASS_ARRAY) -#define DUK_HOBJECT_CMASK_BOOLEAN (1UL << DUK_HOBJECT_CLASS_BOOLEAN) -#define DUK_HOBJECT_CMASK_DATE (1UL << DUK_HOBJECT_CLASS_DATE) -#define DUK_HOBJECT_CMASK_ERROR (1UL << DUK_HOBJECT_CLASS_ERROR) -#define DUK_HOBJECT_CMASK_FUNCTION (1UL << DUK_HOBJECT_CLASS_FUNCTION) -#define DUK_HOBJECT_CMASK_JSON (1UL << DUK_HOBJECT_CLASS_JSON) -#define DUK_HOBJECT_CMASK_MATH (1UL << DUK_HOBJECT_CLASS_MATH) -#define DUK_HOBJECT_CMASK_NUMBER (1UL << DUK_HOBJECT_CLASS_NUMBER) -#define DUK_HOBJECT_CMASK_OBJECT (1UL << DUK_HOBJECT_CLASS_OBJECT) -#define DUK_HOBJECT_CMASK_REGEXP (1UL << DUK_HOBJECT_CLASS_REGEXP) -#define DUK_HOBJECT_CMASK_STRING (1UL << DUK_HOBJECT_CLASS_STRING) -#define DUK_HOBJECT_CMASK_GLOBAL (1UL << DUK_HOBJECT_CLASS_GLOBAL) -#define DUK_HOBJECT_CMASK_SYMBOL (1UL << DUK_HOBJECT_CLASS_SYMBOL) -#define DUK_HOBJECT_CMASK_OBJENV (1UL << DUK_HOBJECT_CLASS_OBJENV) -#define DUK_HOBJECT_CMASK_DECENV (1UL << DUK_HOBJECT_CLASS_DECENV) -#define DUK_HOBJECT_CMASK_POINTER (1UL << DUK_HOBJECT_CLASS_POINTER) -#define DUK_HOBJECT_CMASK_ARRAYBUFFER (1UL << DUK_HOBJECT_CLASS_ARRAYBUFFER) -#define DUK_HOBJECT_CMASK_DATAVIEW (1UL << DUK_HOBJECT_CLASS_DATAVIEW) -#define DUK_HOBJECT_CMASK_INT8ARRAY (1UL << DUK_HOBJECT_CLASS_INT8ARRAY) -#define DUK_HOBJECT_CMASK_UINT8ARRAY (1UL << DUK_HOBJECT_CLASS_UINT8ARRAY) -#define DUK_HOBJECT_CMASK_UINT8CLAMPEDARRAY (1UL << DUK_HOBJECT_CLASS_UINT8CLAMPEDARRAY) -#define DUK_HOBJECT_CMASK_INT16ARRAY (1UL << DUK_HOBJECT_CLASS_INT16ARRAY) -#define DUK_HOBJECT_CMASK_UINT16ARRAY (1UL << DUK_HOBJECT_CLASS_UINT16ARRAY) -#define DUK_HOBJECT_CMASK_INT32ARRAY (1UL << DUK_HOBJECT_CLASS_INT32ARRAY) -#define DUK_HOBJECT_CMASK_UINT32ARRAY (1UL << DUK_HOBJECT_CLASS_UINT32ARRAY) -#define DUK_HOBJECT_CMASK_FLOAT32ARRAY (1UL << DUK_HOBJECT_CLASS_FLOAT32ARRAY) -#define DUK_HOBJECT_CMASK_FLOAT64ARRAY (1UL << DUK_HOBJECT_CLASS_FLOAT64ARRAY) - -#define DUK_HOBJECT_CMASK_ALL_BUFOBJS \ - (DUK_HOBJECT_CMASK_ARRAYBUFFER | DUK_HOBJECT_CMASK_DATAVIEW | DUK_HOBJECT_CMASK_INT8ARRAY | DUK_HOBJECT_CMASK_UINT8ARRAY | \ - DUK_HOBJECT_CMASK_UINT8CLAMPEDARRAY | DUK_HOBJECT_CMASK_INT16ARRAY | DUK_HOBJECT_CMASK_UINT16ARRAY | \ - DUK_HOBJECT_CMASK_INT32ARRAY | DUK_HOBJECT_CMASK_UINT32ARRAY | DUK_HOBJECT_CMASK_FLOAT32ARRAY | \ - DUK_HOBJECT_CMASK_FLOAT64ARRAY) - -#define DUK_HOBJECT_IS_OBJENV(h) (DUK_HOBJECT_GET_CLASS_NUMBER((h)) == DUK_HOBJECT_CLASS_OBJENV) -#define DUK_HOBJECT_IS_DECENV(h) (DUK_HOBJECT_GET_CLASS_NUMBER((h)) == DUK_HOBJECT_CLASS_DECENV) -#define DUK_HOBJECT_IS_ENV(h) (DUK_HOBJECT_IS_OBJENV((h)) || DUK_HOBJECT_IS_DECENV((h))) -#define DUK_HOBJECT_IS_ARRAY(h) DUK_HOBJECT_HAS_EXOTIC_ARRAY((h)) /* Rely on class Array <=> exotic Array */ -#define DUK_HOBJECT_IS_BOUNDFUNC(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_BOUNDFUNC) -#define DUK_HOBJECT_IS_COMPFUNC(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_COMPFUNC) -#define DUK_HOBJECT_IS_NATFUNC(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_NATFUNC) -#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) -#define DUK_HOBJECT_IS_BUFOBJ(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_BUFOBJ) -#else -#define DUK_HOBJECT_IS_BUFOBJ(h) 0 -#endif -#define DUK_HOBJECT_IS_THREAD(h) (DUK_HOBJECT_GET_CLASS_NUMBER((h)) == DUK_HOBJECT_CLASS_THREAD) -#if defined(DUK_USE_ES6_PROXY) -#define DUK_HOBJECT_IS_PROXY(h) DUK_HOBJECT_HAS_EXOTIC_PROXYOBJ((h)) -#else -#define DUK_HOBJECT_IS_PROXY(h) 0 -#endif - -#define DUK_HOBJECT_IS_NONBOUND_FUNCTION(h) \ - DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_COMPFUNC | DUK_HOBJECT_FLAG_NATFUNC) - -#define DUK_HOBJECT_IS_FUNCTION(h) \ - DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_BOUNDFUNC | DUK_HOBJECT_FLAG_COMPFUNC | DUK_HOBJECT_FLAG_NATFUNC) - -#define DUK_HOBJECT_IS_CALLABLE(h) DUK_HOBJECT_HAS_CALLABLE((h)) - -/* Object has any exotic behavior(s). */ -#define DUK_HOBJECT_EXOTIC_BEHAVIOR_FLAGS \ - (DUK_HOBJECT_FLAG_EXOTIC_ARRAY | DUK_HOBJECT_FLAG_EXOTIC_ARGUMENTS | DUK_HOBJECT_FLAG_EXOTIC_STRINGOBJ | \ - DUK_HOBJECT_FLAG_BUFOBJ | DUK_HOBJECT_FLAG_EXOTIC_PROXYOBJ) -#define DUK_HOBJECT_HAS_EXOTIC_BEHAVIOR(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_EXOTIC_BEHAVIOR_FLAGS) - -/* Object has any virtual properties (not counting Proxy behavior). */ -#define DUK_HOBJECT_VIRTUAL_PROPERTY_FLAGS \ - (DUK_HOBJECT_FLAG_EXOTIC_ARRAY | DUK_HOBJECT_FLAG_EXOTIC_STRINGOBJ | DUK_HOBJECT_FLAG_BUFOBJ) -#define DUK_HOBJECT_HAS_VIRTUAL_PROPERTIES(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_VIRTUAL_PROPERTY_FLAGS) - -#define DUK_HOBJECT_HAS_EXTENSIBLE(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_EXTENSIBLE) -#define DUK_HOBJECT_HAS_CONSTRUCTABLE(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_CONSTRUCTABLE) -#define DUK_HOBJECT_HAS_CALLABLE(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_CALLABLE) -#define DUK_HOBJECT_HAS_BOUNDFUNC(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_BOUNDFUNC) -#define DUK_HOBJECT_HAS_COMPFUNC(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_COMPFUNC) -#define DUK_HOBJECT_HAS_NATFUNC(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_NATFUNC) -#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) -#define DUK_HOBJECT_HAS_BUFOBJ(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_BUFOBJ) -#else -#define DUK_HOBJECT_HAS_BUFOBJ(h) 0 -#endif -#define DUK_HOBJECT_HAS_FASTREFS(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_FASTREFS) -#define DUK_HOBJECT_HAS_ARRAY_PART(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_ARRAY_PART) -#define DUK_HOBJECT_HAS_STRICT(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_STRICT) -#define DUK_HOBJECT_HAS_NOTAIL(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_NOTAIL) -#define DUK_HOBJECT_HAS_NEWENV(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_NEWENV) -#define DUK_HOBJECT_HAS_NAMEBINDING(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_NAMEBINDING) -#define DUK_HOBJECT_HAS_CREATEARGS(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_CREATEARGS) -#define DUK_HOBJECT_HAS_HAVE_FINALIZER(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_HAVE_FINALIZER) -#define DUK_HOBJECT_HAS_EXOTIC_ARRAY(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_EXOTIC_ARRAY) -#define DUK_HOBJECT_HAS_EXOTIC_STRINGOBJ(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_EXOTIC_STRINGOBJ) -#define DUK_HOBJECT_HAS_EXOTIC_ARGUMENTS(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_EXOTIC_ARGUMENTS) -#if defined(DUK_USE_ES6_PROXY) -#define DUK_HOBJECT_HAS_EXOTIC_PROXYOBJ(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_EXOTIC_PROXYOBJ) -#else -#define DUK_HOBJECT_HAS_EXOTIC_PROXYOBJ(h) 0 -#endif -#define DUK_HOBJECT_HAS_SPECIAL_CALL(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_SPECIAL_CALL) - -#define DUK_HOBJECT_SET_EXTENSIBLE(h) DUK_HEAPHDR_SET_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_EXTENSIBLE) -#define DUK_HOBJECT_SET_CONSTRUCTABLE(h) DUK_HEAPHDR_SET_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_CONSTRUCTABLE) -#define DUK_HOBJECT_SET_CALLABLE(h) DUK_HEAPHDR_SET_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_CALLABLE) -#define DUK_HOBJECT_SET_BOUNDFUNC(h) DUK_HEAPHDR_SET_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_BOUNDFUNC) -#define DUK_HOBJECT_SET_COMPFUNC(h) DUK_HEAPHDR_SET_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_COMPFUNC) -#define DUK_HOBJECT_SET_NATFUNC(h) DUK_HEAPHDR_SET_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_NATFUNC) -#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) -#define DUK_HOBJECT_SET_BUFOBJ(h) DUK_HEAPHDR_SET_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_BUFOBJ) -#endif -#define DUK_HOBJECT_SET_FASTREFS(h) DUK_HEAPHDR_SET_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_FASTREFS) -#define DUK_HOBJECT_SET_ARRAY_PART(h) DUK_HEAPHDR_SET_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_ARRAY_PART) -#define DUK_HOBJECT_SET_STRICT(h) DUK_HEAPHDR_SET_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_STRICT) -#define DUK_HOBJECT_SET_NOTAIL(h) DUK_HEAPHDR_SET_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_NOTAIL) -#define DUK_HOBJECT_SET_NEWENV(h) DUK_HEAPHDR_SET_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_NEWENV) -#define DUK_HOBJECT_SET_NAMEBINDING(h) DUK_HEAPHDR_SET_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_NAMEBINDING) -#define DUK_HOBJECT_SET_CREATEARGS(h) DUK_HEAPHDR_SET_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_CREATEARGS) -#define DUK_HOBJECT_SET_HAVE_FINALIZER(h) DUK_HEAPHDR_SET_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_HAVE_FINALIZER) -#define DUK_HOBJECT_SET_EXOTIC_ARRAY(h) DUK_HEAPHDR_SET_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_EXOTIC_ARRAY) -#define DUK_HOBJECT_SET_EXOTIC_STRINGOBJ(h) DUK_HEAPHDR_SET_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_EXOTIC_STRINGOBJ) -#define DUK_HOBJECT_SET_EXOTIC_ARGUMENTS(h) DUK_HEAPHDR_SET_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_EXOTIC_ARGUMENTS) -#if defined(DUK_USE_ES6_PROXY) -#define DUK_HOBJECT_SET_EXOTIC_PROXYOBJ(h) DUK_HEAPHDR_SET_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_EXOTIC_PROXYOBJ) -#endif -#define DUK_HOBJECT_SET_SPECIAL_CALL(h) DUK_HEAPHDR_SET_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_SPECIAL_CALL) - -#define DUK_HOBJECT_CLEAR_EXTENSIBLE(h) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_EXTENSIBLE) -#define DUK_HOBJECT_CLEAR_CONSTRUCTABLE(h) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_CONSTRUCTABLE) -#define DUK_HOBJECT_CLEAR_CALLABLE(h) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_CALLABLE) -#define DUK_HOBJECT_CLEAR_BOUNDFUNC(h) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_BOUNDFUNC) -#define DUK_HOBJECT_CLEAR_COMPFUNC(h) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_COMPFUNC) -#define DUK_HOBJECT_CLEAR_NATFUNC(h) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_NATFUNC) -#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) -#define DUK_HOBJECT_CLEAR_BUFOBJ(h) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_BUFOBJ) -#endif -#define DUK_HOBJECT_CLEAR_FASTREFS(h) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_FASTREFS) -#define DUK_HOBJECT_CLEAR_ARRAY_PART(h) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_ARRAY_PART) -#define DUK_HOBJECT_CLEAR_STRICT(h) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_STRICT) -#define DUK_HOBJECT_CLEAR_NOTAIL(h) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_NOTAIL) -#define DUK_HOBJECT_CLEAR_NEWENV(h) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_NEWENV) -#define DUK_HOBJECT_CLEAR_NAMEBINDING(h) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_NAMEBINDING) -#define DUK_HOBJECT_CLEAR_CREATEARGS(h) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_CREATEARGS) -#define DUK_HOBJECT_CLEAR_HAVE_FINALIZER(h) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_HAVE_FINALIZER) -#define DUK_HOBJECT_CLEAR_EXOTIC_ARRAY(h) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_EXOTIC_ARRAY) -#define DUK_HOBJECT_CLEAR_EXOTIC_STRINGOBJ(h) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_EXOTIC_STRINGOBJ) -#define DUK_HOBJECT_CLEAR_EXOTIC_ARGUMENTS(h) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_EXOTIC_ARGUMENTS) -#if defined(DUK_USE_ES6_PROXY) -#define DUK_HOBJECT_CLEAR_EXOTIC_PROXYOBJ(h) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_EXOTIC_PROXYOBJ) -#endif -#define DUK_HOBJECT_CLEAR_SPECIAL_CALL(h) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_SPECIAL_CALL) - -/* Object can/cannot use FASTREFS, i.e. has no strong reference fields beyond - * duk_hobject base header. This is used just for asserts so doesn't need to - * be optimized. - */ -#define DUK_HOBJECT_PROHIBITS_FASTREFS(h) \ - (DUK_HOBJECT_IS_COMPFUNC((h)) || DUK_HOBJECT_IS_DECENV((h)) || DUK_HOBJECT_IS_OBJENV((h)) || DUK_HOBJECT_IS_BUFOBJ((h)) || \ - DUK_HOBJECT_IS_THREAD((h)) || DUK_HOBJECT_IS_PROXY((h)) || DUK_HOBJECT_IS_BOUNDFUNC((h))) -#define DUK_HOBJECT_ALLOWS_FASTREFS(h) (!DUK_HOBJECT_PROHIBITS_FASTREFS((h))) - -/* Flags used for property attributes in duk_propdesc and packed flags. - * Must fit into 8 bits. - */ -#define DUK_PROPDESC_FLAG_WRITABLE (1U << 0) /* E5 Section 8.6.1 */ -#define DUK_PROPDESC_FLAG_ENUMERABLE (1U << 1) /* E5 Section 8.6.1 */ -#define DUK_PROPDESC_FLAG_CONFIGURABLE (1U << 2) /* E5 Section 8.6.1 */ -#define DUK_PROPDESC_FLAG_ACCESSOR (1U << 3) /* accessor */ -#define DUK_PROPDESC_FLAG_VIRTUAL \ - (1U << 4) /* property is virtual: used in duk_propdesc, never stored \ - * (used by e.g. buffer virtual properties) \ - */ -#define DUK_PROPDESC_FLAGS_MASK \ - (DUK_PROPDESC_FLAG_WRITABLE | DUK_PROPDESC_FLAG_ENUMERABLE | DUK_PROPDESC_FLAG_CONFIGURABLE | DUK_PROPDESC_FLAG_ACCESSOR) - -/* Additional flags which are passed in the same flags argument as property - * flags but are not stored in object properties. - */ -#define DUK_PROPDESC_FLAG_NO_OVERWRITE (1U << 4) /* internal define property: skip write silently if exists */ - -/* Convenience defines for property attributes. */ -#define DUK_PROPDESC_FLAGS_NONE 0 -#define DUK_PROPDESC_FLAGS_W (DUK_PROPDESC_FLAG_WRITABLE) -#define DUK_PROPDESC_FLAGS_E (DUK_PROPDESC_FLAG_ENUMERABLE) -#define DUK_PROPDESC_FLAGS_C (DUK_PROPDESC_FLAG_CONFIGURABLE) -#define DUK_PROPDESC_FLAGS_WE (DUK_PROPDESC_FLAG_WRITABLE | DUK_PROPDESC_FLAG_ENUMERABLE) -#define DUK_PROPDESC_FLAGS_WC (DUK_PROPDESC_FLAG_WRITABLE | DUK_PROPDESC_FLAG_CONFIGURABLE) -#define DUK_PROPDESC_FLAGS_EC (DUK_PROPDESC_FLAG_ENUMERABLE | DUK_PROPDESC_FLAG_CONFIGURABLE) -#define DUK_PROPDESC_FLAGS_WEC (DUK_PROPDESC_FLAG_WRITABLE | DUK_PROPDESC_FLAG_ENUMERABLE | DUK_PROPDESC_FLAG_CONFIGURABLE) - -/* Flags for duk_hobject_get_own_propdesc() and variants. */ -#define DUK_GETDESC_FLAG_PUSH_VALUE (1U << 0) /* push value to stack */ -#define DUK_GETDESC_FLAG_IGNORE_PROTOLOOP (1U << 1) /* don't throw for prototype loop */ - -/* - * Macro for object validity check - * - * Assert for currently guaranteed relations between flags, for instance. - */ - -#if defined(DUK_USE_ASSERTIONS) -DUK_INTERNAL_DECL void duk_hobject_assert_valid(duk_hobject *h); -#define DUK_HOBJECT_ASSERT_VALID(h) \ - do { \ - duk_hobject_assert_valid((h)); \ - } while (0) -#else -#define DUK_HOBJECT_ASSERT_VALID(h) \ - do { \ - } while (0) -#endif - -/* - * Macros to access the 'props' allocation. - */ - -#if defined(DUK_USE_HEAPPTR16) -#define DUK_HOBJECT_GET_PROPS(heap, h) ((duk_uint8_t *) DUK_USE_HEAPPTR_DEC16((heap)->heap_udata, ((duk_heaphdr *) (h))->h_extra16)) -#define DUK_HOBJECT_SET_PROPS(heap, h, x) \ - do { \ - ((duk_heaphdr *) (h))->h_extra16 = DUK_USE_HEAPPTR_ENC16((heap)->heap_udata, (void *) (x)); \ - } while (0) -#else -#define DUK_HOBJECT_GET_PROPS(heap, h) ((h)->props) -#define DUK_HOBJECT_SET_PROPS(heap, h, x) \ - do { \ - (h)->props = (duk_uint8_t *) (x); \ - } while (0) -#endif - -#if defined(DUK_USE_HOBJECT_LAYOUT_1) -/* LAYOUT 1 */ -#define DUK_HOBJECT_E_GET_KEY_BASE(heap, h) ((duk_hstring **) (void *) (DUK_HOBJECT_GET_PROPS((heap), (h)))) -#define DUK_HOBJECT_E_GET_VALUE_BASE(heap, h) \ - ((duk_propvalue *) (void *) (DUK_HOBJECT_GET_PROPS((heap), (h)) + DUK_HOBJECT_GET_ESIZE((h)) * sizeof(duk_hstring *))) -#define DUK_HOBJECT_E_GET_FLAGS_BASE(heap, h) \ - ((duk_uint8_t *) (void *) (DUK_HOBJECT_GET_PROPS((heap), (h)) + \ - DUK_HOBJECT_GET_ESIZE((h)) * (sizeof(duk_hstring *) + sizeof(duk_propvalue)))) -#define DUK_HOBJECT_A_GET_BASE(heap, h) \ - ((duk_tval *) (void *) (DUK_HOBJECT_GET_PROPS((heap), (h)) + \ - DUK_HOBJECT_GET_ESIZE((h)) * \ - (sizeof(duk_hstring *) + sizeof(duk_propvalue) + sizeof(duk_uint8_t)))) -#define DUK_HOBJECT_H_GET_BASE(heap, h) \ - ((duk_uint32_t *) (void *) (DUK_HOBJECT_GET_PROPS((heap), (h)) + \ - DUK_HOBJECT_GET_ESIZE((h)) * \ - (sizeof(duk_hstring *) + sizeof(duk_propvalue) + sizeof(duk_uint8_t)) + \ - DUK_HOBJECT_GET_ASIZE((h)) * sizeof(duk_tval))) -#define DUK_HOBJECT_P_COMPUTE_SIZE(n_ent, n_arr, n_hash) \ - ((n_ent) * (sizeof(duk_hstring *) + sizeof(duk_propvalue) + sizeof(duk_uint8_t)) + (n_arr) * sizeof(duk_tval) + \ - (n_hash) * sizeof(duk_uint32_t)) -#define DUK_HOBJECT_P_SET_REALLOC_PTRS(p_base, set_e_k, set_e_pv, set_e_f, set_a, set_h, n_ent, n_arr, n_hash) \ - do { \ - (set_e_k) = (duk_hstring **) (void *) (p_base); \ - (set_e_pv) = (duk_propvalue *) (void *) ((set_e_k) + (n_ent)); \ - (set_e_f) = (duk_uint8_t *) (void *) ((set_e_pv) + (n_ent)); \ - (set_a) = (duk_tval *) (void *) ((set_e_f) + (n_ent)); \ - (set_h) = (duk_uint32_t *) (void *) ((set_a) + (n_arr)); \ - } while (0) -#elif defined(DUK_USE_HOBJECT_LAYOUT_2) -/* LAYOUT 2 */ -#if (DUK_USE_ALIGN_BY == 4) -#define DUK_HOBJECT_E_FLAG_PADDING(e_sz) ((4 - (e_sz)) & 0x03) -#elif (DUK_USE_ALIGN_BY == 8) -#define DUK_HOBJECT_E_FLAG_PADDING(e_sz) ((8 - (e_sz)) & 0x07) -#elif (DUK_USE_ALIGN_BY == 1) -#define DUK_HOBJECT_E_FLAG_PADDING(e_sz) 0 -#else -#error invalid DUK_USE_ALIGN_BY -#endif -#define DUK_HOBJECT_E_GET_KEY_BASE(heap, h) \ - ((duk_hstring **) (void *) (DUK_HOBJECT_GET_PROPS((heap), (h)) + DUK_HOBJECT_GET_ESIZE((h)) * sizeof(duk_propvalue))) -#define DUK_HOBJECT_E_GET_VALUE_BASE(heap, h) ((duk_propvalue *) (void *) (DUK_HOBJECT_GET_PROPS((heap), (h)))) -#define DUK_HOBJECT_E_GET_FLAGS_BASE(heap, h) \ - ((duk_uint8_t *) (void *) (DUK_HOBJECT_GET_PROPS((heap), (h)) + \ - DUK_HOBJECT_GET_ESIZE((h)) * (sizeof(duk_hstring *) + sizeof(duk_propvalue)))) -#define DUK_HOBJECT_A_GET_BASE(heap, h) \ - ((duk_tval *) (void *) (DUK_HOBJECT_GET_PROPS((heap), (h)) + \ - DUK_HOBJECT_GET_ESIZE((h)) * \ - (sizeof(duk_hstring *) + sizeof(duk_propvalue) + sizeof(duk_uint8_t)) + \ - DUK_HOBJECT_E_FLAG_PADDING(DUK_HOBJECT_GET_ESIZE((h))))) -#define DUK_HOBJECT_H_GET_BASE(heap, h) \ - ((duk_uint32_t *) (void *) (DUK_HOBJECT_GET_PROPS((heap), (h)) + \ - DUK_HOBJECT_GET_ESIZE((h)) * \ - (sizeof(duk_hstring *) + sizeof(duk_propvalue) + sizeof(duk_uint8_t)) + \ - DUK_HOBJECT_E_FLAG_PADDING(DUK_HOBJECT_GET_ESIZE((h))) + \ - DUK_HOBJECT_GET_ASIZE((h)) * sizeof(duk_tval))) -#define DUK_HOBJECT_P_COMPUTE_SIZE(n_ent, n_arr, n_hash) \ - ((n_ent) * (sizeof(duk_hstring *) + sizeof(duk_propvalue) + sizeof(duk_uint8_t)) + DUK_HOBJECT_E_FLAG_PADDING((n_ent)) + \ - (n_arr) * sizeof(duk_tval) + (n_hash) * sizeof(duk_uint32_t)) -#define DUK_HOBJECT_P_SET_REALLOC_PTRS(p_base, set_e_k, set_e_pv, set_e_f, set_a, set_h, n_ent, n_arr, n_hash) \ - do { \ - (set_e_pv) = (duk_propvalue *) (void *) (p_base); \ - (set_e_k) = (duk_hstring **) (void *) ((set_e_pv) + (n_ent)); \ - (set_e_f) = (duk_uint8_t *) (void *) ((set_e_k) + (n_ent)); \ - (set_a) = (duk_tval *) (void *) (((duk_uint8_t *) (set_e_f)) + sizeof(duk_uint8_t) * (n_ent) + \ - DUK_HOBJECT_E_FLAG_PADDING((n_ent))); \ - (set_h) = (duk_uint32_t *) (void *) ((set_a) + (n_arr)); \ - } while (0) -#elif defined(DUK_USE_HOBJECT_LAYOUT_3) -/* LAYOUT 3 */ -#define DUK_HOBJECT_E_GET_KEY_BASE(heap, h) \ - ((duk_hstring **) (void *) (DUK_HOBJECT_GET_PROPS((heap), (h)) + DUK_HOBJECT_GET_ESIZE((h)) * sizeof(duk_propvalue) + \ - DUK_HOBJECT_GET_ASIZE((h)) * sizeof(duk_tval))) -#define DUK_HOBJECT_E_GET_VALUE_BASE(heap, h) ((duk_propvalue *) (void *) (DUK_HOBJECT_GET_PROPS((heap), (h)))) -#define DUK_HOBJECT_E_GET_FLAGS_BASE(heap, h) \ - ((duk_uint8_t *) (void *) (DUK_HOBJECT_GET_PROPS((heap), (h)) + \ - DUK_HOBJECT_GET_ESIZE((h)) * (sizeof(duk_propvalue) + sizeof(duk_hstring *)) + \ - DUK_HOBJECT_GET_ASIZE((h)) * sizeof(duk_tval) + \ - DUK_HOBJECT_GET_HSIZE((h)) * sizeof(duk_uint32_t))) -#define DUK_HOBJECT_A_GET_BASE(heap, h) \ - ((duk_tval *) (void *) (DUK_HOBJECT_GET_PROPS((heap), (h)) + DUK_HOBJECT_GET_ESIZE((h)) * sizeof(duk_propvalue))) -#define DUK_HOBJECT_H_GET_BASE(heap, h) \ - ((duk_uint32_t *) (void *) (DUK_HOBJECT_GET_PROPS((heap), (h)) + \ - DUK_HOBJECT_GET_ESIZE((h)) * (sizeof(duk_propvalue) + sizeof(duk_hstring *)) + \ - DUK_HOBJECT_GET_ASIZE((h)) * sizeof(duk_tval))) -#define DUK_HOBJECT_P_COMPUTE_SIZE(n_ent, n_arr, n_hash) \ - ((n_ent) * (sizeof(duk_propvalue) + sizeof(duk_hstring *) + sizeof(duk_uint8_t)) + (n_arr) * sizeof(duk_tval) + \ - (n_hash) * sizeof(duk_uint32_t)) -#define DUK_HOBJECT_P_SET_REALLOC_PTRS(p_base, set_e_k, set_e_pv, set_e_f, set_a, set_h, n_ent, n_arr, n_hash) \ - do { \ - (set_e_pv) = (duk_propvalue *) (void *) (p_base); \ - (set_a) = (duk_tval *) (void *) ((set_e_pv) + (n_ent)); \ - (set_e_k) = (duk_hstring **) (void *) ((set_a) + (n_arr)); \ - (set_h) = (duk_uint32_t *) (void *) ((set_e_k) + (n_ent)); \ - (set_e_f) = (duk_uint8_t *) (void *) ((set_h) + (n_hash)); \ - } while (0) -#else -#error invalid hobject layout defines -#endif /* hobject property layout */ - -#define DUK_HOBJECT_P_ALLOC_SIZE(h) \ - DUK_HOBJECT_P_COMPUTE_SIZE(DUK_HOBJECT_GET_ESIZE((h)), DUK_HOBJECT_GET_ASIZE((h)), DUK_HOBJECT_GET_HSIZE((h))) - -#define DUK_HOBJECT_E_GET_KEY(heap, h, i) (DUK_HOBJECT_E_GET_KEY_BASE((heap), (h))[(i)]) -#define DUK_HOBJECT_E_GET_KEY_PTR(heap, h, i) (&DUK_HOBJECT_E_GET_KEY_BASE((heap), (h))[(i)]) -#define DUK_HOBJECT_E_GET_VALUE(heap, h, i) (DUK_HOBJECT_E_GET_VALUE_BASE((heap), (h))[(i)]) -#define DUK_HOBJECT_E_GET_VALUE_PTR(heap, h, i) (&DUK_HOBJECT_E_GET_VALUE_BASE((heap), (h))[(i)]) -#define DUK_HOBJECT_E_GET_VALUE_TVAL(heap, h, i) (DUK_HOBJECT_E_GET_VALUE((heap), (h), (i)).v) -#define DUK_HOBJECT_E_GET_VALUE_TVAL_PTR(heap, h, i) (&DUK_HOBJECT_E_GET_VALUE((heap), (h), (i)).v) -#define DUK_HOBJECT_E_GET_VALUE_GETTER(heap, h, i) (DUK_HOBJECT_E_GET_VALUE((heap), (h), (i)).a.get) -#define DUK_HOBJECT_E_GET_VALUE_GETTER_PTR(heap, h, i) (&DUK_HOBJECT_E_GET_VALUE((heap), (h), (i)).a.get) -#define DUK_HOBJECT_E_GET_VALUE_SETTER(heap, h, i) (DUK_HOBJECT_E_GET_VALUE((heap), (h), (i)).a.set) -#define DUK_HOBJECT_E_GET_VALUE_SETTER_PTR(heap, h, i) (&DUK_HOBJECT_E_GET_VALUE((heap), (h), (i)).a.set) -#define DUK_HOBJECT_E_GET_FLAGS(heap, h, i) (DUK_HOBJECT_E_GET_FLAGS_BASE((heap), (h))[(i)]) -#define DUK_HOBJECT_E_GET_FLAGS_PTR(heap, h, i) (&DUK_HOBJECT_E_GET_FLAGS_BASE((heap), (h))[(i)]) -#define DUK_HOBJECT_A_GET_VALUE(heap, h, i) (DUK_HOBJECT_A_GET_BASE((heap), (h))[(i)]) -#define DUK_HOBJECT_A_GET_VALUE_PTR(heap, h, i) (&DUK_HOBJECT_A_GET_BASE((heap), (h))[(i)]) -#define DUK_HOBJECT_H_GET_INDEX(heap, h, i) (DUK_HOBJECT_H_GET_BASE((heap), (h))[(i)]) -#define DUK_HOBJECT_H_GET_INDEX_PTR(heap, h, i) (&DUK_HOBJECT_H_GET_BASE((heap), (h))[(i)]) - -#define DUK_HOBJECT_E_SET_KEY(heap, h, i, k) \ - do { \ - DUK_HOBJECT_E_GET_KEY((heap), (h), (i)) = (k); \ - } while (0) -#define DUK_HOBJECT_E_SET_VALUE(heap, h, i, v) \ - do { \ - DUK_HOBJECT_E_GET_VALUE((heap), (h), (i)) = (v); \ - } while (0) -#define DUK_HOBJECT_E_SET_VALUE_TVAL(heap, h, i, v) \ - do { \ - DUK_HOBJECT_E_GET_VALUE((heap), (h), (i)).v = (v); \ - } while (0) -#define DUK_HOBJECT_E_SET_VALUE_GETTER(heap, h, i, v) \ - do { \ - DUK_HOBJECT_E_GET_VALUE((heap), (h), (i)).a.get = (v); \ - } while (0) -#define DUK_HOBJECT_E_SET_VALUE_SETTER(heap, h, i, v) \ - do { \ - DUK_HOBJECT_E_GET_VALUE((heap), (h), (i)).a.set = (v); \ - } while (0) -#define DUK_HOBJECT_E_SET_FLAGS(heap, h, i, f) \ - do { \ - DUK_HOBJECT_E_GET_FLAGS((heap), (h), (i)) = (duk_uint8_t) (f); \ - } while (0) -#define DUK_HOBJECT_A_SET_VALUE(heap, h, i, v) \ - do { \ - DUK_HOBJECT_A_GET_VALUE((heap), (h), (i)) = (v); \ - } while (0) -#define DUK_HOBJECT_A_SET_VALUE_TVAL(heap, h, i, v) DUK_HOBJECT_A_SET_VALUE((heap), (h), (i), (v)) /* alias for above */ -#define DUK_HOBJECT_H_SET_INDEX(heap, h, i, v) \ - do { \ - DUK_HOBJECT_H_GET_INDEX((heap), (h), (i)) = (v); \ - } while (0) - -#define DUK_HOBJECT_E_SET_FLAG_BITS(heap, h, i, mask) \ - do { \ - DUK_HOBJECT_E_GET_FLAGS_BASE((heap), (h))[(i)] |= (mask); \ - } while (0) - -#define DUK_HOBJECT_E_CLEAR_FLAG_BITS(heap, h, i, mask) \ - do { \ - DUK_HOBJECT_E_GET_FLAGS_BASE((heap), (h))[(i)] &= ~(mask); \ - } while (0) - -#define DUK_HOBJECT_E_SLOT_IS_WRITABLE(heap, h, i) ((DUK_HOBJECT_E_GET_FLAGS((heap), (h), (i)) & DUK_PROPDESC_FLAG_WRITABLE) != 0) -#define DUK_HOBJECT_E_SLOT_IS_ENUMERABLE(heap, h, i) \ - ((DUK_HOBJECT_E_GET_FLAGS((heap), (h), (i)) & DUK_PROPDESC_FLAG_ENUMERABLE) != 0) -#define DUK_HOBJECT_E_SLOT_IS_CONFIGURABLE(heap, h, i) \ - ((DUK_HOBJECT_E_GET_FLAGS((heap), (h), (i)) & DUK_PROPDESC_FLAG_CONFIGURABLE) != 0) -#define DUK_HOBJECT_E_SLOT_IS_ACCESSOR(heap, h, i) ((DUK_HOBJECT_E_GET_FLAGS((heap), (h), (i)) & DUK_PROPDESC_FLAG_ACCESSOR) != 0) - -#define DUK_HOBJECT_E_SLOT_SET_WRITABLE(heap, h, i) DUK_HOBJECT_E_SET_FLAG_BITS((heap), (h), (i), DUK_PROPDESC_FLAG_WRITABLE) -#define DUK_HOBJECT_E_SLOT_SET_ENUMERABLE(heap, h, i) DUK_HOBJECT_E_SET_FLAG_BITS((heap), (h), (i), DUK_PROPDESC_FLAG_ENUMERABLE) -#define DUK_HOBJECT_E_SLOT_SET_CONFIGURABLE(heap, h, i) \ - DUK_HOBJECT_E_SET_FLAG_BITS((heap), (h), (i), DUK_PROPDESC_FLAG_CONFIGURABLE) -#define DUK_HOBJECT_E_SLOT_SET_ACCESSOR(heap, h, i) DUK_HOBJECT_E_SET_FLAG_BITS((heap), (h), (i), DUK_PROPDESC_FLAG_ACCESSOR) - -#define DUK_HOBJECT_E_SLOT_CLEAR_WRITABLE(heap, h, i) DUK_HOBJECT_E_CLEAR_FLAG_BITS((heap), (h), (i), DUK_PROPDESC_FLAG_WRITABLE) -#define DUK_HOBJECT_E_SLOT_CLEAR_ENUMERABLE(heap, h, i) \ - DUK_HOBJECT_E_CLEAR_FLAG_BITS((heap), (h), (i), DUK_PROPDESC_FLAG_ENUMERABLE) -#define DUK_HOBJECT_E_SLOT_CLEAR_CONFIGURABLE(heap, h, i) \ - DUK_HOBJECT_E_CLEAR_FLAG_BITS((heap), (h), (i), DUK_PROPDESC_FLAG_CONFIGURABLE) -#define DUK_HOBJECT_E_SLOT_CLEAR_ACCESSOR(heap, h, i) DUK_HOBJECT_E_CLEAR_FLAG_BITS((heap), (h), (i), DUK_PROPDESC_FLAG_ACCESSOR) - -#define DUK_PROPDESC_IS_WRITABLE(p) (((p)->flags & DUK_PROPDESC_FLAG_WRITABLE) != 0) -#define DUK_PROPDESC_IS_ENUMERABLE(p) (((p)->flags & DUK_PROPDESC_FLAG_ENUMERABLE) != 0) -#define DUK_PROPDESC_IS_CONFIGURABLE(p) (((p)->flags & DUK_PROPDESC_FLAG_CONFIGURABLE) != 0) -#define DUK_PROPDESC_IS_ACCESSOR(p) (((p)->flags & DUK_PROPDESC_FLAG_ACCESSOR) != 0) - -#define DUK_HOBJECT_HASHIDX_UNUSED 0xffffffffUL -#define DUK_HOBJECT_HASHIDX_DELETED 0xfffffffeUL - -/* - * Macros for accessing size fields - */ - -#if defined(DUK_USE_OBJSIZES16) -#define DUK_HOBJECT_GET_ESIZE(h) ((h)->e_size16) -#define DUK_HOBJECT_SET_ESIZE(h, v) \ - do { \ - (h)->e_size16 = (v); \ - } while (0) -#define DUK_HOBJECT_GET_ENEXT(h) ((h)->e_next16) -#define DUK_HOBJECT_SET_ENEXT(h, v) \ - do { \ - (h)->e_next16 = (v); \ - } while (0) -#define DUK_HOBJECT_POSTINC_ENEXT(h) ((h)->e_next16++) -#define DUK_HOBJECT_GET_ASIZE(h) ((h)->a_size16) -#define DUK_HOBJECT_SET_ASIZE(h, v) \ - do { \ - (h)->a_size16 = (v); \ - } while (0) -#if defined(DUK_USE_HOBJECT_HASH_PART) -#define DUK_HOBJECT_GET_HSIZE(h) ((h)->h_size16) -#define DUK_HOBJECT_SET_HSIZE(h, v) \ - do { \ - (h)->h_size16 = (v); \ - } while (0) -#else -#define DUK_HOBJECT_GET_HSIZE(h) 0 -#define DUK_HOBJECT_SET_HSIZE(h, v) \ - do { \ - DUK_ASSERT((v) == 0); \ - } while (0) -#endif -#else -#define DUK_HOBJECT_GET_ESIZE(h) ((h)->e_size) -#define DUK_HOBJECT_SET_ESIZE(h, v) \ - do { \ - (h)->e_size = (v); \ - } while (0) -#define DUK_HOBJECT_GET_ENEXT(h) ((h)->e_next) -#define DUK_HOBJECT_SET_ENEXT(h, v) \ - do { \ - (h)->e_next = (v); \ - } while (0) -#define DUK_HOBJECT_POSTINC_ENEXT(h) ((h)->e_next++) -#define DUK_HOBJECT_GET_ASIZE(h) ((h)->a_size) -#define DUK_HOBJECT_SET_ASIZE(h, v) \ - do { \ - (h)->a_size = (v); \ - } while (0) -#if defined(DUK_USE_HOBJECT_HASH_PART) -#define DUK_HOBJECT_GET_HSIZE(h) ((h)->h_size) -#define DUK_HOBJECT_SET_HSIZE(h, v) \ - do { \ - (h)->h_size = (v); \ - } while (0) -#else -#define DUK_HOBJECT_GET_HSIZE(h) 0 -#define DUK_HOBJECT_SET_HSIZE(h, v) \ - do { \ - DUK_ASSERT((v) == 0); \ - } while (0) -#endif -#endif - -/* - * Misc - */ - -/* Maximum prototype traversal depth. Sanity limit which handles e.g. - * prototype loops (even complex ones like 1->2->3->4->2->3->4->2->3->4). - */ -#define DUK_HOBJECT_PROTOTYPE_CHAIN_SANITY 10000L - -/* - * ECMAScript [[Class]] - */ - -/* range check not necessary because all 4-bit values are mapped */ -#define DUK_HOBJECT_CLASS_NUMBER_TO_STRIDX(n) duk_class_number_to_stridx[(n)] - -#define DUK_HOBJECT_GET_CLASS_STRING(heap, h) \ - DUK_HEAP_GET_STRING((heap), DUK_HOBJECT_CLASS_NUMBER_TO_STRIDX(DUK_HOBJECT_GET_CLASS_NUMBER((h)))) - -/* - * Macros for property handling - */ - -#if defined(DUK_USE_HEAPPTR16) -#define DUK_HOBJECT_GET_PROTOTYPE(heap, h) ((duk_hobject *) DUK_USE_HEAPPTR_DEC16((heap)->heap_udata, (h)->prototype16)) -#define DUK_HOBJECT_SET_PROTOTYPE(heap, h, x) \ - do { \ - (h)->prototype16 = DUK_USE_HEAPPTR_ENC16((heap)->heap_udata, (void *) (x)); \ - } while (0) -#else -#define DUK_HOBJECT_GET_PROTOTYPE(heap, h) ((h)->prototype) -#define DUK_HOBJECT_SET_PROTOTYPE(heap, h, x) \ - do { \ - (h)->prototype = (x); \ - } while (0) -#endif - -/* Set prototype, DECREF earlier value, INCREF new value (tolerating NULLs). */ -#define DUK_HOBJECT_SET_PROTOTYPE_UPDREF(thr, h, p) duk_hobject_set_prototype_updref((thr), (h), (p)) - -/* Set initial prototype, assume NULL previous prototype, INCREF new value, - * tolerate NULL. - */ -#define DUK_HOBJECT_SET_PROTOTYPE_INIT_INCREF(thr, h, proto) \ - do { \ - duk_hthread *duk__thr = (thr); \ - duk_hobject *duk__obj = (h); \ - duk_hobject *duk__proto = (proto); \ - DUK_UNREF(duk__thr); \ - DUK_ASSERT(DUK_HOBJECT_GET_PROTOTYPE(duk__thr->heap, duk__obj) == NULL); \ - DUK_HOBJECT_SET_PROTOTYPE(duk__thr->heap, duk__obj, duk__proto); \ - DUK_HOBJECT_INCREF_ALLOWNULL(duk__thr, duk__proto); \ - } while (0) - -/* - * Finalizer check - */ - -#if defined(DUK_USE_HEAPPTR16) -#define DUK_HOBJECT_HAS_FINALIZER_FAST(heap, h) duk_hobject_has_finalizer_fast_raw((heap), (h)) -#else -#define DUK_HOBJECT_HAS_FINALIZER_FAST(heap, h) duk_hobject_has_finalizer_fast_raw((h)) -#endif - -/* - * Resizing and hash behavior - */ - -/* Sanity limit on max number of properties (allocated, not necessarily used). - * This is somewhat arbitrary, but if we're close to 2**32 properties some - * algorithms will fail (e.g. hash size selection, next prime selection). - * Also, we use negative array/entry table indices to indicate 'not found', - * so anything above 0x80000000 will cause trouble now. - */ -#if defined(DUK_USE_OBJSIZES16) -#define DUK_HOBJECT_MAX_PROPERTIES 0x0000ffffUL -#else -#define DUK_HOBJECT_MAX_PROPERTIES 0x3fffffffUL /* 2**30-1 ~= 1G properties */ -#endif - -/* internal align target for props allocation, must be 2*n for some n */ -#if (DUK_USE_ALIGN_BY == 4) -#define DUK_HOBJECT_ALIGN_TARGET 4 -#elif (DUK_USE_ALIGN_BY == 8) -#define DUK_HOBJECT_ALIGN_TARGET 8 -#elif (DUK_USE_ALIGN_BY == 1) -#define DUK_HOBJECT_ALIGN_TARGET 1 -#else -#error invalid DUK_USE_ALIGN_BY -#endif - -/* - * PC-to-line constants - */ - -#define DUK_PC2LINE_SKIP 64 - -/* maximum length for a SKIP-1 diffstream: 35 bits per entry, rounded up to bytes */ -#define DUK_PC2LINE_MAX_DIFF_LENGTH (((DUK_PC2LINE_SKIP - 1) * 35 + 7) / 8) - -/* - * Struct defs - */ - -struct duk_propaccessor { - duk_hobject *get; - duk_hobject *set; -}; - -union duk_propvalue { - /* The get/set pointers could be 16-bit pointer compressed but it - * would make no difference on 32-bit platforms because duk_tval is - * 8 bytes or more anyway. - */ - duk_tval v; - duk_propaccessor a; -}; - -struct duk_propdesc { - /* read-only values 'lifted' for ease of use */ - duk_small_uint_t flags; - duk_hobject *get; - duk_hobject *set; - - /* for updating (all are set to < 0 for virtual properties) */ - duk_int_t e_idx; /* prop index in 'entry part', < 0 if not there */ - duk_int_t h_idx; /* prop index in 'hash part', < 0 if not there */ - duk_int_t a_idx; /* prop index in 'array part', < 0 if not there */ -}; - -struct duk_hobject { - duk_heaphdr hdr; - - /* - * 'props' contains {key,value,flags} entries, optional array entries, and - * an optional hash lookup table for non-array entries in a single 'sliced' - * allocation. There are several layout options, which differ slightly in - * generated code size/speed and alignment/padding; duk_features.h selects - * the layout used. - * - * Layout 1 (DUK_USE_HOBJECT_LAYOUT_1): - * - * e_size * sizeof(duk_hstring *) bytes of entry keys (e_next gc reachable) - * e_size * sizeof(duk_propvalue) bytes of entry values (e_next gc reachable) - * e_size * sizeof(duk_uint8_t) bytes of entry flags (e_next gc reachable) - * a_size * sizeof(duk_tval) bytes of (opt) array values (plain only) (all gc reachable) - * h_size * sizeof(duk_uint32_t) bytes of (opt) hash indexes to entries (e_size), - * 0xffffffffUL = unused, 0xfffffffeUL = deleted - * - * Layout 2 (DUK_USE_HOBJECT_LAYOUT_2): - * - * e_size * sizeof(duk_propvalue) bytes of entry values (e_next gc reachable) - * e_size * sizeof(duk_hstring *) bytes of entry keys (e_next gc reachable) - * e_size * sizeof(duk_uint8_t) + pad bytes of entry flags (e_next gc reachable) - * a_size * sizeof(duk_tval) bytes of (opt) array values (plain only) (all gc reachable) - * h_size * sizeof(duk_uint32_t) bytes of (opt) hash indexes to entries (e_size), - * 0xffffffffUL = unused, 0xfffffffeUL = deleted - * - * Layout 3 (DUK_USE_HOBJECT_LAYOUT_3): - * - * e_size * sizeof(duk_propvalue) bytes of entry values (e_next gc reachable) - * a_size * sizeof(duk_tval) bytes of (opt) array values (plain only) (all gc reachable) - * e_size * sizeof(duk_hstring *) bytes of entry keys (e_next gc reachable) - * h_size * sizeof(duk_uint32_t) bytes of (opt) hash indexes to entries (e_size), - * 0xffffffffUL = unused, 0xfffffffeUL = deleted - * e_size * sizeof(duk_uint8_t) bytes of entry flags (e_next gc reachable) - * - * In layout 1, the 'e_next' count is rounded to 4 or 8 on platforms - * requiring 4 or 8 byte alignment. This ensures proper alignment - * for the entries, at the cost of memory footprint. However, it's - * probably preferable to use another layout on such platforms instead. - * - * In layout 2, the key and value parts are swapped to avoid padding - * the key array on platforms requiring alignment by 8. The flags part - * is padded to get alignment for array entries. The 'e_next' count does - * not need to be rounded as in layout 1. - * - * In layout 3, entry values and array values are always aligned properly, - * and assuming pointers are at most 8 bytes, so are the entry keys. Hash - * indices will be properly aligned (assuming pointers are at least 4 bytes). - * Finally, flags don't need additional alignment. This layout provides - * compact allocations without padding (even on platforms with alignment - * requirements) at the cost of a bit slower lookups. - * - * Objects with few keys don't have a hash index; keys are looked up linearly, - * which is cache efficient because the keys are consecutive. Larger objects - * have a hash index part which contains integer indexes to the entries part. - * - * A single allocation reduces memory allocation overhead but requires more - * work when any part needs to be resized. A sliced allocation for entries - * makes linear key matching faster on most platforms (more locality) and - * skimps on flags size (which would be followed by 3 bytes of padding in - * most architectures if entries were placed in a struct). - * - * 'props' also contains internal properties distinguished with a non-BMP - * prefix. Often used properties should be placed early in 'props' whenever - * possible to make accessing them as fast a possible. - */ - -#if defined(DUK_USE_HEAPPTR16) - /* Located in duk_heaphdr h_extra16. Subclasses of duk_hobject (like - * duk_hcompfunc) are not free to use h_extra16 for this reason. - */ -#else - duk_uint8_t *props; -#endif - - /* prototype: the only internal property lifted outside 'e' as it is so central */ -#if defined(DUK_USE_HEAPPTR16) - duk_uint16_t prototype16; -#else - duk_hobject *prototype; -#endif - -#if defined(DUK_USE_OBJSIZES16) - duk_uint16_t e_size16; - duk_uint16_t e_next16; - duk_uint16_t a_size16; -#if defined(DUK_USE_HOBJECT_HASH_PART) - duk_uint16_t h_size16; -#endif -#else - duk_uint32_t e_size; /* entry part size */ - duk_uint32_t e_next; /* index for next new key ([0,e_next[ are gc reachable) */ - duk_uint32_t a_size; /* array part size (entirely gc reachable) */ -#if defined(DUK_USE_HOBJECT_HASH_PART) - duk_uint32_t h_size; /* hash part size or 0 if unused */ -#endif -#endif -}; - -/* - * Exposed data - */ - -#if !defined(DUK_SINGLE_FILE) -DUK_INTERNAL_DECL duk_uint8_t duk_class_number_to_stridx[32]; -#endif /* !DUK_SINGLE_FILE */ - -/* - * Prototypes - */ - -/* alloc and init */ -DUK_INTERNAL_DECL duk_hobject *duk_hobject_alloc_unchecked(duk_heap *heap, duk_uint_t hobject_flags); -DUK_INTERNAL_DECL duk_hobject *duk_hobject_alloc(duk_hthread *thr, duk_uint_t hobject_flags); -DUK_INTERNAL_DECL duk_harray *duk_harray_alloc(duk_hthread *thr, duk_uint_t hobject_flags); -DUK_INTERNAL_DECL duk_hcompfunc *duk_hcompfunc_alloc(duk_hthread *thr, duk_uint_t hobject_flags); -DUK_INTERNAL_DECL duk_hnatfunc *duk_hnatfunc_alloc(duk_hthread *thr, duk_uint_t hobject_flags); -DUK_INTERNAL_DECL duk_hboundfunc *duk_hboundfunc_alloc(duk_heap *heap, duk_uint_t hobject_flags); -#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) -DUK_INTERNAL_DECL duk_hbufobj *duk_hbufobj_alloc(duk_hthread *thr, duk_uint_t hobject_flags); -#endif -DUK_INTERNAL_DECL duk_hthread *duk_hthread_alloc_unchecked(duk_heap *heap, duk_uint_t hobject_flags); -DUK_INTERNAL_DECL duk_hthread *duk_hthread_alloc(duk_hthread *thr, duk_uint_t hobject_flags); -DUK_INTERNAL_DECL duk_hdecenv *duk_hdecenv_alloc(duk_hthread *thr, duk_uint_t hobject_flags); -DUK_INTERNAL_DECL duk_hobjenv *duk_hobjenv_alloc(duk_hthread *thr, duk_uint_t hobject_flags); -DUK_INTERNAL_DECL duk_hproxy *duk_hproxy_alloc(duk_hthread *thr, duk_uint_t hobject_flags); - -/* resize */ -DUK_INTERNAL_DECL void duk_hobject_realloc_props(duk_hthread *thr, - duk_hobject *obj, - duk_uint32_t new_e_size, - duk_uint32_t new_a_size, - duk_uint32_t new_h_size, - duk_bool_t abandon_array); -DUK_INTERNAL_DECL void duk_hobject_resize_entrypart(duk_hthread *thr, duk_hobject *obj, duk_uint32_t new_e_size); -#if 0 /*unused*/ -DUK_INTERNAL_DECL void duk_hobject_resize_arraypart(duk_hthread *thr, - duk_hobject *obj, - duk_uint32_t new_a_size); -#endif - -/* low-level property functions */ -DUK_INTERNAL_DECL duk_bool_t -duk_hobject_find_entry(duk_heap *heap, duk_hobject *obj, duk_hstring *key, duk_int_t *e_idx, duk_int_t *h_idx); -DUK_INTERNAL_DECL duk_tval *duk_hobject_find_entry_tval_ptr(duk_heap *heap, duk_hobject *obj, duk_hstring *key); -DUK_INTERNAL_DECL duk_tval *duk_hobject_find_entry_tval_ptr_stridx(duk_heap *heap, duk_hobject *obj, duk_small_uint_t stridx); -DUK_INTERNAL_DECL duk_tval *duk_hobject_find_entry_tval_ptr_and_attrs(duk_heap *heap, - duk_hobject *obj, - duk_hstring *key, - duk_uint_t *out_attrs); -DUK_INTERNAL_DECL duk_tval *duk_hobject_find_array_entry_tval_ptr(duk_heap *heap, duk_hobject *obj, duk_uarridx_t i); -DUK_INTERNAL_DECL duk_bool_t -duk_hobject_get_own_propdesc(duk_hthread *thr, duk_hobject *obj, duk_hstring *key, duk_propdesc *out_desc, duk_small_uint_t flags); - -/* core property functions */ -DUK_INTERNAL_DECL duk_bool_t duk_hobject_getprop(duk_hthread *thr, duk_tval *tv_obj, duk_tval *tv_key); -DUK_INTERNAL_DECL duk_bool_t -duk_hobject_putprop(duk_hthread *thr, duk_tval *tv_obj, duk_tval *tv_key, duk_tval *tv_val, duk_bool_t throw_flag); -DUK_INTERNAL_DECL duk_bool_t duk_hobject_delprop(duk_hthread *thr, duk_tval *tv_obj, duk_tval *tv_key, duk_bool_t throw_flag); -DUK_INTERNAL_DECL duk_bool_t duk_hobject_hasprop(duk_hthread *thr, duk_tval *tv_obj, duk_tval *tv_key); - -/* internal property functions */ -#define DUK_DELPROP_FLAG_THROW (1U << 0) -#define DUK_DELPROP_FLAG_FORCE (1U << 1) -DUK_INTERNAL_DECL duk_bool_t duk_hobject_delprop_raw(duk_hthread *thr, duk_hobject *obj, duk_hstring *key, duk_small_uint_t flags); -DUK_INTERNAL_DECL duk_bool_t duk_hobject_hasprop_raw(duk_hthread *thr, duk_hobject *obj, duk_hstring *key); -DUK_INTERNAL_DECL void duk_hobject_define_property_internal(duk_hthread *thr, - duk_hobject *obj, - duk_hstring *key, - duk_small_uint_t flags); -DUK_INTERNAL_DECL void duk_hobject_define_property_internal_arridx(duk_hthread *thr, - duk_hobject *obj, - duk_uarridx_t arr_idx, - duk_small_uint_t flags); -DUK_INTERNAL_DECL duk_size_t duk_hobject_get_length(duk_hthread *thr, duk_hobject *obj); -#if defined(DUK_USE_HEAPPTR16) -DUK_INTERNAL_DECL duk_bool_t duk_hobject_has_finalizer_fast_raw(duk_heap *heap, duk_hobject *obj); -#else -DUK_INTERNAL_DECL duk_bool_t duk_hobject_has_finalizer_fast_raw(duk_hobject *obj); -#endif - -/* helpers for defineProperty() and defineProperties() */ -DUK_INTERNAL_DECL void duk_hobject_prepare_property_descriptor(duk_hthread *thr, - duk_idx_t idx_in, - duk_uint_t *out_defprop_flags, - duk_idx_t *out_idx_value, - duk_hobject **out_getter, - duk_hobject **out_setter); -DUK_INTERNAL_DECL duk_bool_t duk_hobject_define_property_helper(duk_hthread *thr, - duk_uint_t defprop_flags, - duk_hobject *obj, - duk_hstring *key, - duk_idx_t idx_value, - duk_hobject *get, - duk_hobject *set, - duk_bool_t throw_flag); - -/* Object built-in methods */ -DUK_INTERNAL_DECL void duk_hobject_object_get_own_property_descriptor(duk_hthread *thr, duk_idx_t obj_idx); -DUK_INTERNAL_DECL void duk_hobject_object_seal_freeze_helper(duk_hthread *thr, duk_hobject *obj, duk_bool_t is_freeze); -DUK_INTERNAL_DECL duk_bool_t duk_hobject_object_is_sealed_frozen_helper(duk_hthread *thr, duk_hobject *obj, duk_bool_t is_frozen); -DUK_INTERNAL_DECL duk_bool_t duk_hobject_object_ownprop_helper(duk_hthread *thr, duk_small_uint_t required_desc_flags); - -/* internal properties */ -DUK_INTERNAL_DECL duk_tval *duk_hobject_get_internal_value_tval_ptr(duk_heap *heap, duk_hobject *obj); -DUK_INTERNAL_DECL duk_hstring *duk_hobject_get_internal_value_string(duk_heap *heap, duk_hobject *obj); -DUK_INTERNAL_DECL duk_harray *duk_hobject_get_formals(duk_hthread *thr, duk_hobject *obj); -DUK_INTERNAL_DECL duk_hobject *duk_hobject_get_varmap(duk_hthread *thr, duk_hobject *obj); - -/* hobject management functions */ -DUK_INTERNAL_DECL void duk_hobject_compact_props(duk_hthread *thr, duk_hobject *obj); - -/* ES2015 proxy */ -#if defined(DUK_USE_ES6_PROXY) -DUK_INTERNAL_DECL duk_bool_t duk_hobject_proxy_check(duk_hobject *obj, duk_hobject **out_target, duk_hobject **out_handler); -DUK_INTERNAL_DECL duk_hobject *duk_hobject_resolve_proxy_target(duk_hobject *obj); -#endif - -/* enumeration */ -DUK_INTERNAL_DECL void duk_hobject_enumerator_create(duk_hthread *thr, duk_small_uint_t enum_flags); -DUK_INTERNAL_DECL duk_ret_t duk_hobject_get_enumerated_keys(duk_hthread *thr, duk_small_uint_t enum_flags); -DUK_INTERNAL_DECL duk_bool_t duk_hobject_enumerator_next(duk_hthread *thr, duk_bool_t get_value); - -/* macros */ -DUK_INTERNAL_DECL void duk_hobject_set_prototype_updref(duk_hthread *thr, duk_hobject *h, duk_hobject *p); - -/* pc2line */ -#if defined(DUK_USE_PC2LINE) -DUK_INTERNAL_DECL void duk_hobject_pc2line_pack(duk_hthread *thr, duk_compiler_instr *instrs, duk_uint_fast32_t length); -DUK_INTERNAL_DECL duk_uint_fast32_t duk_hobject_pc2line_query(duk_hthread *thr, duk_idx_t idx_func, duk_uint_fast32_t pc); -#endif - -/* misc */ -DUK_INTERNAL_DECL duk_bool_t duk_hobject_prototype_chain_contains(duk_hthread *thr, - duk_hobject *h, - duk_hobject *p, - duk_bool_t ignore_loop); - -#if !defined(DUK_USE_OBJECT_BUILTIN) -/* These declarations are needed when related built-in is disabled and - * genbuiltins.py won't automatically emit the declerations. - */ -DUK_INTERNAL_DECL duk_ret_t duk_bi_object_prototype_to_string(duk_hthread *thr); -DUK_INTERNAL_DECL duk_ret_t duk_bi_function_prototype(duk_hthread *thr); -#endif - -#endif /* DUK_HOBJECT_H_INCLUDED */ -/* #include duk_hcompfunc.h */ -#line 1 "duk_hcompfunc.h" -/* - * Heap compiled function (ECMAScript function) representation. - * - * There is a single data buffer containing the ECMAScript function's - * bytecode, constants, and inner functions. - */ - -#if !defined(DUK_HCOMPFUNC_H_INCLUDED) -#define DUK_HCOMPFUNC_H_INCLUDED - -/* - * Field accessor macros - */ - -/* XXX: casts could be improved, especially for GET/SET DATA */ - -#if defined(DUK_USE_HEAPPTR16) -#define DUK_HCOMPFUNC_GET_DATA(heap, h) ((duk_hbuffer_fixed *) (void *) DUK_USE_HEAPPTR_DEC16((heap)->heap_udata, (h)->data16)) -#define DUK_HCOMPFUNC_SET_DATA(heap, h, v) \ - do { \ - (h)->data16 = DUK_USE_HEAPPTR_ENC16((heap)->heap_udata, (void *) (v)); \ - } while (0) -#define DUK_HCOMPFUNC_GET_FUNCS(heap, h) ((duk_hobject **) (void *) (DUK_USE_HEAPPTR_DEC16((heap)->heap_udata, (h)->funcs16))) -#define DUK_HCOMPFUNC_SET_FUNCS(heap, h, v) \ - do { \ - (h)->funcs16 = DUK_USE_HEAPPTR_ENC16((heap)->heap_udata, (void *) (v)); \ - } while (0) -#define DUK_HCOMPFUNC_GET_BYTECODE(heap, h) ((duk_instr_t *) (void *) (DUK_USE_HEAPPTR_DEC16((heap)->heap_udata, (h)->bytecode16))) -#define DUK_HCOMPFUNC_SET_BYTECODE(heap, h, v) \ - do { \ - (h)->bytecode16 = DUK_USE_HEAPPTR_ENC16((heap)->heap_udata, (void *) (v)); \ - } while (0) -#define DUK_HCOMPFUNC_GET_LEXENV(heap, h) ((duk_hobject *) (void *) (DUK_USE_HEAPPTR_DEC16((heap)->heap_udata, (h)->lex_env16))) -#define DUK_HCOMPFUNC_SET_LEXENV(heap, h, v) \ - do { \ - (h)->lex_env16 = DUK_USE_HEAPPTR_ENC16((heap)->heap_udata, (void *) (v)); \ - } while (0) -#define DUK_HCOMPFUNC_GET_VARENV(heap, h) ((duk_hobject *) (void *) (DUK_USE_HEAPPTR_DEC16((heap)->heap_udata, (h)->var_env16))) -#define DUK_HCOMPFUNC_SET_VARENV(heap, h, v) \ - do { \ - (h)->var_env16 = DUK_USE_HEAPPTR_ENC16((heap)->heap_udata, (void *) (v)); \ - } while (0) -#else -#define DUK_HCOMPFUNC_GET_DATA(heap, h) ((duk_hbuffer_fixed *) (void *) (h)->data) -#define DUK_HCOMPFUNC_SET_DATA(heap, h, v) \ - do { \ - (h)->data = (duk_hbuffer *) (v); \ - } while (0) -#define DUK_HCOMPFUNC_GET_FUNCS(heap, h) ((h)->funcs) -#define DUK_HCOMPFUNC_SET_FUNCS(heap, h, v) \ - do { \ - (h)->funcs = (v); \ - } while (0) -#define DUK_HCOMPFUNC_GET_BYTECODE(heap, h) ((h)->bytecode) -#define DUK_HCOMPFUNC_SET_BYTECODE(heap, h, v) \ - do { \ - (h)->bytecode = (v); \ - } while (0) -#define DUK_HCOMPFUNC_GET_LEXENV(heap, h) ((h)->lex_env) -#define DUK_HCOMPFUNC_SET_LEXENV(heap, h, v) \ - do { \ - (h)->lex_env = (v); \ - } while (0) -#define DUK_HCOMPFUNC_GET_VARENV(heap, h) ((h)->var_env) -#define DUK_HCOMPFUNC_SET_VARENV(heap, h, v) \ - do { \ - (h)->var_env = (v); \ - } while (0) -#endif - -/* - * Accessor macros for function specific data areas - */ - -/* Note: assumes 'data' is always a fixed buffer */ -#define DUK_HCOMPFUNC_GET_BUFFER_BASE(heap, h) DUK_HBUFFER_FIXED_GET_DATA_PTR((heap), DUK_HCOMPFUNC_GET_DATA((heap), (h))) - -#define DUK_HCOMPFUNC_GET_CONSTS_BASE(heap, h) ((duk_tval *) (void *) DUK_HCOMPFUNC_GET_BUFFER_BASE((heap), (h))) - -#define DUK_HCOMPFUNC_GET_FUNCS_BASE(heap, h) DUK_HCOMPFUNC_GET_FUNCS((heap), (h)) - -#define DUK_HCOMPFUNC_GET_CODE_BASE(heap, h) DUK_HCOMPFUNC_GET_BYTECODE((heap), (h)) - -#define DUK_HCOMPFUNC_GET_CONSTS_END(heap, h) ((duk_tval *) (void *) DUK_HCOMPFUNC_GET_FUNCS((heap), (h))) - -#define DUK_HCOMPFUNC_GET_FUNCS_END(heap, h) ((duk_hobject **) (void *) DUK_HCOMPFUNC_GET_BYTECODE((heap), (h))) - -/* XXX: double evaluation of DUK_HCOMPFUNC_GET_DATA() */ -#define DUK_HCOMPFUNC_GET_CODE_END(heap, h) \ - ((duk_instr_t *) (void *) (DUK_HBUFFER_FIXED_GET_DATA_PTR((heap), DUK_HCOMPFUNC_GET_DATA((heap), (h))) + \ - DUK_HBUFFER_GET_SIZE((duk_hbuffer *) DUK_HCOMPFUNC_GET_DATA((heap), h)))) - -#define DUK_HCOMPFUNC_GET_CONSTS_SIZE(heap, h) \ - ((duk_size_t) (((const duk_uint8_t *) DUK_HCOMPFUNC_GET_CONSTS_END((heap), (h))) - \ - ((const duk_uint8_t *) DUK_HCOMPFUNC_GET_CONSTS_BASE((heap), (h))))) - -#define DUK_HCOMPFUNC_GET_FUNCS_SIZE(heap, h) \ - ((duk_size_t) (((const duk_uint8_t *) DUK_HCOMPFUNC_GET_FUNCS_END((heap), (h))) - \ - ((const duk_uint8_t *) DUK_HCOMPFUNC_GET_FUNCS_BASE((heap), (h))))) - -#define DUK_HCOMPFUNC_GET_CODE_SIZE(heap, h) \ - ((duk_size_t) (((const duk_uint8_t *) DUK_HCOMPFUNC_GET_CODE_END((heap), (h))) - \ - ((const duk_uint8_t *) DUK_HCOMPFUNC_GET_CODE_BASE((heap), (h))))) - -#define DUK_HCOMPFUNC_GET_CONSTS_COUNT(heap, h) ((duk_size_t) (DUK_HCOMPFUNC_GET_CONSTS_SIZE((heap), (h)) / sizeof(duk_tval))) - -#define DUK_HCOMPFUNC_GET_FUNCS_COUNT(heap, h) ((duk_size_t) (DUK_HCOMPFUNC_GET_FUNCS_SIZE((heap), (h)) / sizeof(duk_hobject *))) - -#define DUK_HCOMPFUNC_GET_CODE_COUNT(heap, h) ((duk_size_t) (DUK_HCOMPFUNC_GET_CODE_SIZE((heap), (h)) / sizeof(duk_instr_t))) - -/* - * Validity assert - */ - -#if defined(DUK_USE_ASSERTIONS) -DUK_INTERNAL_DECL void duk_hcompfunc_assert_valid(duk_hcompfunc *h); -#define DUK_HCOMPFUNC_ASSERT_VALID(h) \ - do { \ - duk_hcompfunc_assert_valid((h)); \ - } while (0) -#else -#define DUK_HCOMPFUNC_ASSERT_VALID(h) \ - do { \ - } while (0) -#endif - -/* - * Main struct - */ - -struct duk_hcompfunc { - /* shared object part */ - duk_hobject obj; - - /* - * Pointers to function data area for faster access. Function - * data is a buffer shared between all closures of the same - * "template" function. The data buffer is always fixed (non- - * dynamic, hence stable), with a layout as follows: - * - * constants (duk_tval) - * inner functions (duk_hobject *) - * bytecode (duk_instr_t) - * - * Note: bytecode end address can be computed from 'data' buffer - * size. It is not strictly necessary functionally, assuming - * bytecode never jumps outside its allocated area. However, - * it's a safety/robustness feature for avoiding the chance of - * executing random data as bytecode due to a compiler error. - * - * Note: values in the data buffer must be incref'd (they will - * be decref'd on release) for every compiledfunction referring - * to the 'data' element. - */ - - /* Data area, fixed allocation, stable data ptrs. */ -#if defined(DUK_USE_HEAPPTR16) - duk_uint16_t data16; -#else - duk_hbuffer *data; -#endif - - /* No need for constants pointer (= same as data). - * - * When using 16-bit packing alignment to 4 is nice. 'funcs' will be - * 4-byte aligned because 'constants' are duk_tvals. For now the - * inner function pointers are not compressed, so that 'bytecode' will - * also be 4-byte aligned. - */ -#if defined(DUK_USE_HEAPPTR16) - duk_uint16_t funcs16; - duk_uint16_t bytecode16; -#else - duk_hobject **funcs; - duk_instr_t *bytecode; -#endif - - /* Lexenv: lexical environment of closure, NULL for templates. - * Varenv: variable environment of closure, NULL for templates. - */ -#if defined(DUK_USE_HEAPPTR16) - duk_uint16_t lex_env16; - duk_uint16_t var_env16; -#else - duk_hobject *lex_env; - duk_hobject *var_env; -#endif - - /* - * 'nregs' registers are allocated on function entry, at most 'nargs' - * are initialized to arguments, and the rest to undefined. Arguments - * above 'nregs' are not mapped to registers. All registers in the - * active stack range must be initialized because they are GC reachable. - * 'nargs' is needed so that if the function is given more than 'nargs' - * arguments, the additional arguments do not 'clobber' registers - * beyond 'nregs' which must be consistently initialized to undefined. - * - * Usually there is no need to know which registers are mapped to - * local variables. Registers may be allocated to variable in any - * way (even including gaps). However, a register-variable mapping - * must be the same for the duration of the function execution and - * the register cannot be used for anything else. - * - * When looking up variables by name, the '_Varmap' map is used. - * When an activation closes, registers mapped to arguments are - * copied into the environment record based on the same map. The - * reverse map (from register to variable) is not currently needed - * at run time, except for debugging, so it is not maintained. - */ - - duk_uint16_t nregs; /* regs to allocate */ - duk_uint16_t nargs; /* number of arguments allocated to regs */ - - /* - * Additional control information is placed into the object itself - * as internal properties to avoid unnecessary fields for the - * majority of functions. The compiler tries to omit internal - * control fields when possible. - * - * Function templates: - * - * { - * name: "func", // declaration, named function expressions - * fileName: - * _Varmap: { "arg1": 0, "arg2": 1, "varname": 2 }, - * _Formals: [ "arg1", "arg2" ], - * _Source: "function func(arg1, arg2) { ... }", - * _Pc2line: , - * } - * - * Function instances: - * - * { - * length: 2, - * prototype: { constructor: }, - * caller: , - * arguments: , - * name: "func", // declaration, named function expressions - * fileName: - * _Varmap: { "arg1": 0, "arg2": 1, "varname": 2 }, - * _Formals: [ "arg1", "arg2" ], - * _Source: "function func(arg1, arg2) { ... }", - * _Pc2line: , - * } - * - * More detailed description of these properties can be found - * in the documentation. - */ - -#if defined(DUK_USE_DEBUGGER_SUPPORT) - /* Line number range for function. Needed during debugging to - * determine active breakpoints. - */ - duk_uint32_t start_line; - duk_uint32_t end_line; -#endif -}; - -#endif /* DUK_HCOMPFUNC_H_INCLUDED */ -/* #include duk_hnatfunc.h */ -#line 1 "duk_hnatfunc.h" -/* - * Heap native function representation. - */ - -#if !defined(DUK_HNATFUNC_H_INCLUDED) -#define DUK_HNATFUNC_H_INCLUDED - -#if defined(DUK_USE_ASSERTIONS) -DUK_INTERNAL_DECL void duk_hnatfunc_assert_valid(duk_hnatfunc *h); -#define DUK_HNATFUNC_ASSERT_VALID(h) \ - do { \ - duk_hnatfunc_assert_valid((h)); \ - } while (0) -#else -#define DUK_HNATFUNC_ASSERT_VALID(h) \ - do { \ - } while (0) -#endif - -#define DUK_HNATFUNC_NARGS_VARARGS ((duk_int16_t) -1) -#define DUK_HNATFUNC_NARGS_MAX ((duk_int16_t) 0x7fff) - -struct duk_hnatfunc { - /* shared object part */ - duk_hobject obj; - - duk_c_function func; - duk_int16_t nargs; - duk_int16_t magic; - - /* The 'magic' field allows an opaque 16-bit field to be accessed by the - * Duktape/C function. This allows, for instance, the same native function - * to be used for a set of very similar functions, with the 'magic' field - * providing the necessary non-argument flags / values to guide the behavior - * of the native function. The value is signed on purpose: it is easier to - * convert a signed value to unsigned (simply AND with 0xffff) than vice - * versa. - * - * Note: cannot place nargs/magic into the heaphdr flags, because - * duk_hobject takes almost all flags already. - */ -}; - -#endif /* DUK_HNATFUNC_H_INCLUDED */ -/* #include duk_hboundfunc.h */ -#line 1 "duk_hboundfunc.h" -/* - * Bound function representation. - */ - -#if !defined(DUK_HBOUNDFUNC_H_INCLUDED) -#define DUK_HBOUNDFUNC_H_INCLUDED - -/* Artificial limit for args length. Ensures arithmetic won't overflow - * 32 bits when combining bound functions. - */ -#define DUK_HBOUNDFUNC_MAX_ARGS 0x20000000UL - -#if defined(DUK_USE_ASSERTIONS) -DUK_INTERNAL_DECL void duk_hboundfunc_assert_valid(duk_hboundfunc *h); -#define DUK_HBOUNDFUNC_ASSERT_VALID(h) \ - do { \ - duk_hboundfunc_assert_valid((h)); \ - } while (0) -#else -#define DUK_HBOUNDFUNC_ASSERT_VALID(h) \ - do { \ - } while (0) -#endif - -struct duk_hboundfunc { - /* Shared object part. */ - duk_hobject obj; - - /* Final target function, stored as duk_tval so that lightfunc can be - * represented too. - */ - duk_tval target; - - /* This binding. */ - duk_tval this_binding; - - /* Arguments to prepend. */ - duk_tval *args; /* Separate allocation. */ - duk_idx_t nargs; -}; - -#endif /* DUK_HBOUNDFUNC_H_INCLUDED */ -/* #include duk_hbufobj.h */ -#line 1 "duk_hbufobj.h" -/* - * Heap Buffer object representation. Used for all Buffer variants. - */ - -#if !defined(DUK_HBUFOBJ_H_INCLUDED) -#define DUK_HBUFOBJ_H_INCLUDED - -#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) - -/* All element accessors are host endian now (driven by TypedArray spec). */ -#define DUK_HBUFOBJ_ELEM_UINT8 0 -#define DUK_HBUFOBJ_ELEM_UINT8CLAMPED 1 -#define DUK_HBUFOBJ_ELEM_INT8 2 -#define DUK_HBUFOBJ_ELEM_UINT16 3 -#define DUK_HBUFOBJ_ELEM_INT16 4 -#define DUK_HBUFOBJ_ELEM_UINT32 5 -#define DUK_HBUFOBJ_ELEM_INT32 6 -#define DUK_HBUFOBJ_ELEM_FLOAT32 7 -#define DUK_HBUFOBJ_ELEM_FLOAT64 8 -#define DUK_HBUFOBJ_ELEM_MAX 8 - -#if defined(DUK_USE_ASSERTIONS) -DUK_INTERNAL_DECL void duk_hbufobj_assert_valid(duk_hbufobj *h); -#define DUK_HBUFOBJ_ASSERT_VALID(h) \ - do { \ - duk_hbufobj_assert_valid((h)); \ - } while (0) -#else -#define DUK_HBUFOBJ_ASSERT_VALID(h) \ - do { \ - } while (0) -#endif - -/* Get the current data pointer (caller must ensure buf != NULL) as a - * duk_uint8_t ptr. Note that the result may be NULL if the underlying - * buffer has zero size and is not a fixed buffer. - */ -#define DUK_HBUFOBJ_GET_SLICE_BASE(heap, h) \ - (DUK_ASSERT_EXPR((h) != NULL), \ - DUK_ASSERT_EXPR((h)->buf != NULL), \ - (((duk_uint8_t *) DUK_HBUFFER_GET_DATA_PTR((heap), (h)->buf)) + (h)->offset)) - -/* True if slice is full, i.e. offset is zero and length covers the entire - * buffer. This status may change independently of the duk_hbufobj if - * the underlying buffer is dynamic and changes without the hbufobj - * being changed. - */ -#define DUK_HBUFOBJ_FULL_SLICE(h) \ - (DUK_ASSERT_EXPR((h) != NULL), \ - DUK_ASSERT_EXPR((h)->buf != NULL), \ - ((h)->offset == 0 && (h)->length == DUK_HBUFFER_GET_SIZE((h)->buf))) - -/* Validate that the whole slice [0,length[ is contained in the underlying - * buffer. Caller must ensure 'buf' != NULL. - */ -#define DUK_HBUFOBJ_VALID_SLICE(h) \ - (DUK_ASSERT_EXPR((h) != NULL), \ - DUK_ASSERT_EXPR((h)->buf != NULL), \ - ((h)->offset + (h)->length <= DUK_HBUFFER_GET_SIZE((h)->buf))) - -/* Validate byte read/write for virtual 'offset', i.e. check that the - * offset, taking into account h->offset, is within the underlying - * buffer size. This is a safety check which is needed to ensure - * that even a misconfigured duk_hbufobj never causes memory unsafe - * behavior (e.g. if an underlying dynamic buffer changes after being - * setup). Caller must ensure 'buf' != NULL. - */ -#define DUK_HBUFOBJ_VALID_BYTEOFFSET_INCL(h, off) \ - (DUK_ASSERT_EXPR((h) != NULL), DUK_ASSERT_EXPR((h)->buf != NULL), ((h)->offset + (off) < DUK_HBUFFER_GET_SIZE((h)->buf))) - -#define DUK_HBUFOBJ_VALID_BYTEOFFSET_EXCL(h, off) \ - (DUK_ASSERT_EXPR((h) != NULL), DUK_ASSERT_EXPR((h)->buf != NULL), ((h)->offset + (off) <= DUK_HBUFFER_GET_SIZE((h)->buf))) - -/* Clamp an input byte length (already assumed to be within the nominal - * duk_hbufobj 'length') to the current dynamic buffer limits to yield - * a byte length limit that's safe for memory accesses. This value can - * be invalidated by any side effect because it may trigger a user - * callback that resizes the underlying buffer. - */ -#define DUK_HBUFOBJ_CLAMP_BYTELENGTH(h, len) (DUK_ASSERT_EXPR((h) != NULL), duk_hbufobj_clamp_bytelength((h), (len))) - -/* Typed arrays have virtual indices, ArrayBuffer and DataView do not. */ -#define DUK_HBUFOBJ_HAS_VIRTUAL_INDICES(h) ((h)->is_typedarray) - -struct duk_hbufobj { - /* Shared object part. */ - duk_hobject obj; - - /* Underlying buffer (refcounted), may be NULL. */ - duk_hbuffer *buf; - - /* .buffer reference to an ArrayBuffer, may be NULL. */ - duk_hobject *buf_prop; - - /* Slice and accessor information. - * - * Because the underlying buffer may be dynamic, these may be - * invalidated by the buffer being modified so that both offset - * and length should be validated before every access. Behavior - * when the underlying buffer has changed doesn't need to be clean: - * virtual 'length' doesn't need to be affected, reads can return - * zero/NaN, and writes can be ignored. - * - * Note that a data pointer cannot be precomputed because 'buf' may - * be dynamic and its pointer unstable. - */ - - duk_uint_t offset; /* byte offset to buf */ - duk_uint_t length; /* byte index limit for element access, exclusive */ - duk_uint8_t shift; /* element size shift: - * 0 = u8/i8 - * 1 = u16/i16 - * 2 = u32/i32/float - * 3 = double - */ - duk_uint8_t elem_type; /* element type */ - duk_uint8_t is_typedarray; -}; - -DUK_INTERNAL_DECL duk_uint_t duk_hbufobj_clamp_bytelength(duk_hbufobj *h_bufobj, duk_uint_t len); -DUK_INTERNAL_DECL void duk_hbufobj_push_uint8array_from_plain(duk_hthread *thr, duk_hbuffer *h_buf); -DUK_INTERNAL_DECL void duk_hbufobj_push_validated_read(duk_hthread *thr, - duk_hbufobj *h_bufobj, - duk_uint8_t *p, - duk_small_uint_t elem_size); -DUK_INTERNAL_DECL void duk_hbufobj_validated_write(duk_hthread *thr, - duk_hbufobj *h_bufobj, - duk_uint8_t *p, - duk_small_uint_t elem_size); -DUK_INTERNAL_DECL void duk_hbufobj_promote_plain(duk_hthread *thr, duk_idx_t idx); - -#else /* DUK_USE_BUFFEROBJECT_SUPPORT */ - -/* nothing */ - -#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ -#endif /* DUK_HBUFOBJ_H_INCLUDED */ -/* #include duk_hthread.h */ -#line 1 "duk_hthread.h" -/* - * Heap thread object representation. - * - * duk_hthread is also the 'context' for public API functions via a - * different typedef. Most API calls operate on the topmost frame - * of the value stack only. - */ - -#if !defined(DUK_HTHREAD_H_INCLUDED) -#define DUK_HTHREAD_H_INCLUDED - -/* - * Stack constants - */ - -/* Initial valstack size, roughly 0.7kiB. */ -#define DUK_VALSTACK_INITIAL_SIZE 96U - -/* Internal extra elements assumed on function entry, always added to - * user-defined 'extra' for e.g. the duk_check_stack() call. - */ -#define DUK_VALSTACK_INTERNAL_EXTRA 32U - -/* Number of elements guaranteed to be user accessible (in addition to call - * arguments) on Duktape/C function entry. This is the major public API - * commitment. - */ -#define DUK_VALSTACK_API_ENTRY_MINIMUM DUK_API_ENTRY_STACK - -/* - * Activation defines - */ - -#define DUK_ACT_FLAG_STRICT (1U << 0) /* function executes in strict mode */ -#define DUK_ACT_FLAG_TAILCALLED (1U << 1) /* activation has tail called one or more times */ -#define DUK_ACT_FLAG_CONSTRUCT (1U << 2) /* function executes as a constructor (called via "new") */ -#define DUK_ACT_FLAG_PREVENT_YIELD (1U << 3) /* activation prevents yield (native call or "new") */ -#define DUK_ACT_FLAG_DIRECT_EVAL (1U << 4) /* activation is a direct eval call */ -#define DUK_ACT_FLAG_CONSTRUCT_PROXY (1U << 5) /* activation is for Proxy 'construct' call, special return value handling */ -#define DUK_ACT_FLAG_BREAKPOINT_ACTIVE (1U << 6) /* activation has active breakpoint(s) */ - -#define DUK_ACT_GET_FUNC(act) ((act)->func) - -/* - * Flags for __FILE__ / __LINE__ registered into tracedata - */ - -#define DUK_TB_FLAG_NOBLAME_FILELINE (1U << 0) /* don't report __FILE__ / __LINE__ as fileName/lineNumber */ - -/* - * Catcher defines - */ - -/* XXX: remove catcher type entirely */ - -/* flags field: LLLLLLFT, L = label (24 bits), F = flags (4 bits), T = type (4 bits) */ -#define DUK_CAT_TYPE_MASK 0x0000000fUL -#define DUK_CAT_TYPE_BITS 4 -#define DUK_CAT_LABEL_MASK 0xffffff00UL -#define DUK_CAT_LABEL_BITS 24 -#define DUK_CAT_LABEL_SHIFT 8 - -#define DUK_CAT_FLAG_CATCH_ENABLED (1U << 4) /* catch part will catch */ -#define DUK_CAT_FLAG_FINALLY_ENABLED (1U << 5) /* finally part will catch */ -#define DUK_CAT_FLAG_CATCH_BINDING_ENABLED (1U << 6) /* request to create catch binding */ -#define DUK_CAT_FLAG_LEXENV_ACTIVE (1U << 7) /* catch or with binding is currently active */ - -#define DUK_CAT_TYPE_UNKNOWN 0 -#define DUK_CAT_TYPE_TCF 1 -#define DUK_CAT_TYPE_LABEL 2 - -#define DUK_CAT_GET_TYPE(c) ((c)->flags & DUK_CAT_TYPE_MASK) -#define DUK_CAT_GET_LABEL(c) (((c)->flags & DUK_CAT_LABEL_MASK) >> DUK_CAT_LABEL_SHIFT) - -#define DUK_CAT_HAS_CATCH_ENABLED(c) ((c)->flags & DUK_CAT_FLAG_CATCH_ENABLED) -#define DUK_CAT_HAS_FINALLY_ENABLED(c) ((c)->flags & DUK_CAT_FLAG_FINALLY_ENABLED) -#define DUK_CAT_HAS_CATCH_BINDING_ENABLED(c) ((c)->flags & DUK_CAT_FLAG_CATCH_BINDING_ENABLED) -#define DUK_CAT_HAS_LEXENV_ACTIVE(c) ((c)->flags & DUK_CAT_FLAG_LEXENV_ACTIVE) - -#define DUK_CAT_SET_CATCH_ENABLED(c) \ - do { \ - (c)->flags |= DUK_CAT_FLAG_CATCH_ENABLED; \ - } while (0) -#define DUK_CAT_SET_FINALLY_ENABLED(c) \ - do { \ - (c)->flags |= DUK_CAT_FLAG_FINALLY_ENABLED; \ - } while (0) -#define DUK_CAT_SET_CATCH_BINDING_ENABLED(c) \ - do { \ - (c)->flags |= DUK_CAT_FLAG_CATCH_BINDING_ENABLED; \ - } while (0) -#define DUK_CAT_SET_LEXENV_ACTIVE(c) \ - do { \ - (c)->flags |= DUK_CAT_FLAG_LEXENV_ACTIVE; \ - } while (0) - -#define DUK_CAT_CLEAR_CATCH_ENABLED(c) \ - do { \ - (c)->flags &= ~DUK_CAT_FLAG_CATCH_ENABLED; \ - } while (0) -#define DUK_CAT_CLEAR_FINALLY_ENABLED(c) \ - do { \ - (c)->flags &= ~DUK_CAT_FLAG_FINALLY_ENABLED; \ - } while (0) -#define DUK_CAT_CLEAR_CATCH_BINDING_ENABLED(c) \ - do { \ - (c)->flags &= ~DUK_CAT_FLAG_CATCH_BINDING_ENABLED; \ - } while (0) -#define DUK_CAT_CLEAR_LEXENV_ACTIVE(c) \ - do { \ - (c)->flags &= ~DUK_CAT_FLAG_LEXENV_ACTIVE; \ - } while (0) - -/* - * Thread defines - */ - -#if defined(DUK_USE_ROM_STRINGS) -#define DUK_HTHREAD_GET_STRING(thr, idx) ((duk_hstring *) DUK_LOSE_CONST(duk_rom_strings_stridx[(idx)])) -#else /* DUK_USE_ROM_STRINGS */ -#if defined(DUK_USE_HEAPPTR16) -#define DUK_HTHREAD_GET_STRING(thr, idx) ((duk_hstring *) DUK_USE_HEAPPTR_DEC16((thr)->heap->heap_udata, (thr)->strs16[(idx)])) -#else -#define DUK_HTHREAD_GET_STRING(thr, idx) ((thr)->strs[(idx)]) -#endif -#endif /* DUK_USE_ROM_STRINGS */ - -/* values for the state field */ -#define DUK_HTHREAD_STATE_INACTIVE 1 /* thread not currently running */ -#define DUK_HTHREAD_STATE_RUNNING 2 /* thread currently running (only one at a time) */ -#define DUK_HTHREAD_STATE_RESUMED 3 /* thread resumed another thread (active but not running) */ -#define DUK_HTHREAD_STATE_YIELDED 4 /* thread has yielded */ -#define DUK_HTHREAD_STATE_TERMINATED 5 /* thread has terminated */ - -/* Executor interrupt default interval when nothing else requires a - * smaller value. The default interval must be small enough to allow - * for reasonable execution timeout checking but large enough to keep - * impact on execution performance low. - */ -#if defined(DUK_USE_INTERRUPT_COUNTER) -#define DUK_HTHREAD_INTCTR_DEFAULT (256L * 1024L) -#endif - -/* - * Assert context is valid: non-NULL pointer, fields look sane. - * - * This is used by public API call entrypoints to catch invalid 'ctx' pointers - * as early as possible; invalid 'ctx' pointers cause very odd and difficult to - * diagnose behavior so it's worth checking even when the check is not 100%. - */ - -#if defined(DUK_USE_ASSERTIONS) -/* Assertions for internals. */ -DUK_INTERNAL_DECL void duk_hthread_assert_valid(duk_hthread *thr); -#define DUK_HTHREAD_ASSERT_VALID(thr) \ - do { \ - duk_hthread_assert_valid((thr)); \ - } while (0) - -/* Assertions for public API calls; a bit stronger. */ -DUK_INTERNAL_DECL void duk_ctx_assert_valid(duk_hthread *thr); -#define DUK_CTX_ASSERT_VALID(thr) \ - do { \ - duk_ctx_assert_valid((thr)); \ - } while (0) -#else -#define DUK_HTHREAD_ASSERT_VALID(thr) \ - do { \ - } while (0) -#define DUK_CTX_ASSERT_VALID(thr) \ - do { \ - } while (0) -#endif - -/* Assertions for API call entry specifically. Checks 'ctx' but also may - * check internal state (e.g. not in a debugger transport callback). - */ -#define DUK_ASSERT_API_ENTRY(thr) \ - do { \ - DUK_CTX_ASSERT_VALID((thr)); \ - DUK_ASSERT((thr)->heap != NULL); \ - DUK_ASSERT((thr)->heap->dbg_calling_transport == 0); \ - } while (0) - -/* - * Assertion helpers. - */ - -#define DUK_ASSERT_STRIDX_VALID(val) DUK_ASSERT((duk_uint_t) (val) < DUK_HEAP_NUM_STRINGS) - -#define DUK_ASSERT_BIDX_VALID(val) DUK_ASSERT((duk_uint_t) (val) < DUK_NUM_BUILTINS) - -/* - * Misc - */ - -/* Fast access to 'this' binding. Assumes there's a call in progress. */ -#define DUK_HTHREAD_THIS_PTR(thr) \ - (DUK_ASSERT_EXPR((thr) != NULL), DUK_ASSERT_EXPR((thr)->valstack_bottom > (thr)->valstack), (thr)->valstack_bottom - 1) - -/* - * Struct defines - */ - -/* Fields are ordered for alignment/packing. */ -struct duk_activation { - duk_tval tv_func; /* borrowed: full duk_tval for function being executed; for lightfuncs */ - duk_hobject *func; /* borrowed: function being executed; for bound function calls, this is the final, real function, NULL - for lightfuncs */ - duk_activation *parent; /* previous (parent) activation (or NULL if none) */ - duk_hobject *var_env; /* current variable environment (may be NULL if delayed) */ - duk_hobject *lex_env; /* current lexical environment (may be NULL if delayed) */ - duk_catcher *cat; /* current catcher (or NULL) */ - -#if defined(DUK_USE_NONSTD_FUNC_CALLER_PROPERTY) - /* Previous value of 'func' caller, restored when unwound. Only in use - * when 'func' is non-strict. - */ - duk_hobject *prev_caller; -#endif - - duk_instr_t *curr_pc; /* next instruction to execute (points to 'func' bytecode, stable pointer), NULL for native calls */ - - /* bottom_byteoff and retval_byteoff are only used for book-keeping - * of ECMAScript-initiated calls, to allow returning to an ECMAScript - * function properly. - */ - - /* Bottom of valstack for this activation, used to reset - * valstack_bottom on return; offset is absolute. There's - * no need to track 'top' because native call handling deals - * with that using locals, and for ECMAScript returns 'nregs' - * indicates the necessary top. - */ - duk_size_t bottom_byteoff; - - /* Return value when returning to this activation (points to caller - * reg, not callee reg); offset is absolute (only set if activation is - * not topmost). - * - * Note: bottom_byteoff is always set, while retval_byteoff is only - * applicable for activations below the topmost one. Currently - * retval_byteoff for the topmost activation is considered garbage - * (and it not initialized on entry or cleared on return; may contain - * previous or garbage values). - */ - duk_size_t retval_byteoff; - - /* Current 'this' binding is the value just below bottom. - * Previously, 'this' binding was handled with an index to the - * (calling) valstack. This works for everything except tail - * calls, which must not "accumulate" valstack temps. - */ - - /* Value stack reserve (valstack_end) byte offset to be restored - * when returning to this activation. Only used by the bytecode - * executor. - */ - duk_size_t reserve_byteoff; - -#if defined(DUK_USE_DEBUGGER_SUPPORT) - duk_uint32_t prev_line; /* needed for stepping */ -#endif - - duk_small_uint_t flags; -}; - -struct duk_catcher { - duk_catcher *parent; /* previous (parent) catcher (or NULL if none) */ - duk_hstring *h_varname; /* borrowed reference to catch variable name (or NULL if none) */ - /* (reference is valid as long activation exists) */ - duk_instr_t *pc_base; /* resume execution from pc_base or pc_base+1 (points to 'func' bytecode, stable pointer) */ - duk_size_t idx_base; /* idx_base and idx_base+1 get completion value and type */ - duk_uint32_t flags; /* type and control flags, label number */ - /* XXX: could pack 'flags' and 'idx_base' to same value in practice, - * on 32-bit targets this would make duk_catcher 16 bytes. - */ -}; - -struct duk_hthread { - /* Shared object part */ - duk_hobject obj; - - /* Pointer to bytecode executor's 'curr_pc' variable. Used to copy - * the current PC back into the topmost activation when activation - * state is about to change (or "syncing" is otherwise needed). This - * is rather awkward but important for performance, see execution.rst. - */ - duk_instr_t **ptr_curr_pc; - - /* Backpointers. */ - duk_heap *heap; - - /* Current strictness flag: affects API calls. */ - duk_uint8_t strict; - - /* Thread state. */ - duk_uint8_t state; - duk_uint8_t unused1; - duk_uint8_t unused2; - - /* XXX: Valstack and callstack are currently assumed to have non-NULL - * pointers. Relaxing this would not lead to big benefits (except - * perhaps for terminated threads). - */ - - /* Value stack: these are expressed as pointers for faster stack - * manipulation. [valstack,valstack_top[ is GC-reachable, - * [valstack_top,valstack_alloc_end[ is not GC-reachable but kept - * initialized as 'undefined'. [valstack,valstack_end[ is the - * guaranteed/reserved space and the valstack cannot be resized to - * a smaller size. [valstack_end,valstack_alloc_end[ is currently - * allocated slack that can be used to grow the current guaranteed - * space but may be shrunk away without notice. - * - * - * <----------------------- guaranteed ---> - * <---- slack ---> - * <--- frame ---> - * .-------------+=============+----------+--------------. - * |xxxxxxxxxxxxx|yyyyyyyyyyyyy|uuuuuuuuuu|uuuuuuuuuuuuuu| - * `-------------+=============+----------+--------------' - * - * ^ ^ ^ ^ ^ - * | | | | | - * valstack bottom top end alloc_end - * - * xxx = arbitrary values, below current frame - * yyy = arbitrary values, inside current frame - * uuu = outside active value stack, initialized to 'undefined' - */ - duk_tval *valstack; /* start of valstack allocation */ - duk_tval *valstack_end; /* end of valstack reservation/guarantee (exclusive) */ - duk_tval *valstack_alloc_end; /* end of valstack allocation */ - duk_tval *valstack_bottom; /* bottom of current frame */ - duk_tval *valstack_top; /* top of current frame (exclusive) */ - - /* Call stack, represented as a linked list starting from the current - * activation (or NULL if nothing is active). - */ - duk_activation *callstack_curr; /* current activation (or NULL if none) */ - duk_size_t callstack_top; /* number of activation records in callstack (0 if none) */ - duk_size_t callstack_preventcount; /* number of activation records in callstack preventing a yield */ - - /* Yield/resume book-keeping. */ - duk_hthread *resumer; /* who resumed us (if any) */ - - /* Current compiler state (if any), used for augmenting SyntaxErrors. */ - duk_compiler_ctx *compile_ctx; - -#if defined(DUK_USE_INTERRUPT_COUNTER) - /* Interrupt counter for triggering a slow path check for execution - * timeout, debugger interaction such as breakpoints, etc. The value - * is valid for the current running thread, and both the init and - * counter values are copied whenever a thread switch occurs. It's - * important for the counter to be conveniently accessible for the - * bytecode executor inner loop for performance reasons. - */ - duk_int_t interrupt_counter; /* countdown state */ - duk_int_t interrupt_init; /* start value for current countdown */ -#endif - - /* Builtin-objects; may or may not be shared with other threads, - * threads existing in different "compartments" will have different - * built-ins. Must be stored on a per-thread basis because there - * is no intermediate structure for a thread group / compartment. - * This takes quite a lot of space, currently 43x4 = 172 bytes on - * 32-bit platforms. - * - * In some cases the builtins array could be ROM based, but it's - * sometimes edited (e.g. for sandboxing) so it's better to keep - * this array in RAM. - */ - duk_hobject *builtins[DUK_NUM_BUILTINS]; - - /* Convenience copies from heap/vm for faster access. */ -#if defined(DUK_USE_ROM_STRINGS) - /* No field needed when strings are in ROM. */ -#else -#if defined(DUK_USE_HEAPPTR16) - duk_uint16_t *strs16; -#else - duk_hstring **strs; -#endif -#endif -}; - -/* - * Prototypes - */ - -DUK_INTERNAL_DECL void duk_hthread_copy_builtin_objects(duk_hthread *thr_from, duk_hthread *thr_to); -DUK_INTERNAL_DECL void duk_hthread_create_builtin_objects(duk_hthread *thr); -DUK_INTERNAL_DECL duk_bool_t duk_hthread_init_stacks(duk_heap *heap, duk_hthread *thr); -DUK_INTERNAL_DECL void duk_hthread_terminate(duk_hthread *thr); - -DUK_INTERNAL_DECL duk_activation *duk_hthread_activation_alloc(duk_hthread *thr); -DUK_INTERNAL_DECL void duk_hthread_activation_free(duk_hthread *thr, duk_activation *act); -DUK_INTERNAL_DECL void duk_hthread_activation_unwind_norz(duk_hthread *thr); -DUK_INTERNAL_DECL void duk_hthread_activation_unwind_reuse_norz(duk_hthread *thr); -DUK_INTERNAL_DECL duk_activation *duk_hthread_get_activation_for_level(duk_hthread *thr, duk_int_t level); - -DUK_INTERNAL_DECL duk_catcher *duk_hthread_catcher_alloc(duk_hthread *thr); -DUK_INTERNAL_DECL void duk_hthread_catcher_free(duk_hthread *thr, duk_catcher *cat); -DUK_INTERNAL_DECL void duk_hthread_catcher_unwind_norz(duk_hthread *thr, duk_activation *act); -DUK_INTERNAL_DECL void duk_hthread_catcher_unwind_nolexenv_norz(duk_hthread *thr, duk_activation *act); - -#if defined(DUK_USE_FINALIZER_TORTURE) -DUK_INTERNAL_DECL void duk_hthread_valstack_torture_realloc(duk_hthread *thr); -#endif - -DUK_INTERNAL_DECL void *duk_hthread_get_valstack_ptr(duk_heap *heap, void *ud); /* indirect allocs */ - -#if defined(DUK_USE_DEBUGGER_SUPPORT) -DUK_INTERNAL_DECL duk_uint_fast32_t duk_hthread_get_act_curr_pc(duk_hthread *thr, duk_activation *act); -#endif -DUK_INTERNAL_DECL duk_uint_fast32_t duk_hthread_get_act_prev_pc(duk_hthread *thr, duk_activation *act); -DUK_INTERNAL_DECL void duk_hthread_sync_currpc(duk_hthread *thr); -DUK_INTERNAL_DECL void duk_hthread_sync_and_null_currpc(duk_hthread *thr); - -#endif /* DUK_HTHREAD_H_INCLUDED */ -/* #include duk_harray.h */ -#line 1 "duk_harray.h" -/* - * Array object representation, used for actual Array instances. - * - * All objects with the exotic array behavior (which must coincide with having - * internal class array) MUST be duk_harrays. No other object can be a - * duk_harray. However, duk_harrays may not always have an array part. - */ - -#if !defined(DUK_HARRAY_H_INCLUDED) -#define DUK_HARRAY_H_INCLUDED - -#if defined(DUK_USE_ASSERTIONS) -DUK_INTERNAL_DECL void duk_harray_assert_valid(duk_harray *h); -#define DUK_HARRAY_ASSERT_VALID(h) \ - do { \ - duk_harray_assert_valid((h)); \ - } while (0) -#else -#define DUK_HARRAY_ASSERT_VALID(h) \ - do { \ - } while (0) -#endif - -#define DUK_HARRAY_LENGTH_WRITABLE(h) (!(h)->length_nonwritable) -#define DUK_HARRAY_LENGTH_NONWRITABLE(h) ((h)->length_nonwritable) -#define DUK_HARRAY_SET_LENGTH_WRITABLE(h) \ - do { \ - (h)->length_nonwritable = 0; \ - } while (0) -#define DUK_HARRAY_SET_LENGTH_NONWRITABLE(h) \ - do { \ - (h)->length_nonwritable = 1; \ - } while (0) - -struct duk_harray { - /* Shared object part. */ - duk_hobject obj; - - /* Array .length. - * - * At present Array .length may be smaller, equal, or even larger - * than the allocated underlying array part. Fast path code must - * always take this into account carefully. - */ - duk_uint32_t length; - - /* Array .length property attributes. The property is always - * non-enumerable and non-configurable. It's initially writable - * but per Object.defineProperty() rules it can be made non-writable - * even if it is non-configurable. Thus we need to track the - * writability explicitly. - * - * XXX: this field to be eliminated and moved into duk_hobject - * flags field to save space. - */ - duk_bool_t length_nonwritable; -}; - -#endif /* DUK_HARRAY_H_INCLUDED */ -/* #include duk_henv.h */ -#line 1 "duk_henv.h" -/* - * Environment object representation. - */ - -#if !defined(DUK_HENV_H_INCLUDED) -#define DUK_HENV_H_INCLUDED - -#if defined(DUK_USE_ASSERTIONS) -DUK_INTERNAL_DECL void duk_hdecenv_assert_valid(duk_hdecenv *h); -DUK_INTERNAL_DECL void duk_hobjenv_assert_valid(duk_hobjenv *h); -#define DUK_HDECENV_ASSERT_VALID(h) \ - do { \ - duk_hdecenv_assert_valid((h)); \ - } while (0) -#define DUK_HOBJENV_ASSERT_VALID(h) \ - do { \ - duk_hobjenv_assert_valid((h)); \ - } while (0) -#else -#define DUK_HDECENV_ASSERT_VALID(h) \ - do { \ - } while (0) -#define DUK_HOBJENV_ASSERT_VALID(h) \ - do { \ - } while (0) -#endif - -struct duk_hdecenv { - /* Shared object part. */ - duk_hobject obj; - - /* These control variables provide enough information to access live - * variables for a closure that is still open. If thread == NULL, - * the record is closed and the identifiers are in the property table. - */ - duk_hthread *thread; - duk_hobject *varmap; - duk_size_t regbase_byteoff; -}; - -struct duk_hobjenv { - /* Shared object part. */ - duk_hobject obj; - - /* Target object and 'this' binding for object binding. */ - duk_hobject *target; - - /* The 'target' object is used as a this binding in only some object - * environments. For example, the global environment does not provide - * a this binding, but a with statement does. - */ - duk_bool_t has_this; -}; - -#endif /* DUK_HENV_H_INCLUDED */ -/* #include duk_hbuffer.h */ -#line 1 "duk_hbuffer.h" -/* - * Heap buffer representation. - * - * Heap allocated user data buffer which is either: - * - * 1. A fixed size buffer (data follows header statically) - * 2. A dynamic size buffer (data pointer follows header) - * - * The data pointer for a variable size buffer of zero size may be NULL. - */ - -#if !defined(DUK_HBUFFER_H_INCLUDED) -#define DUK_HBUFFER_H_INCLUDED - -/* - * Flags - * - * Fixed buffer: 0 - * Dynamic buffer: DUK_HBUFFER_FLAG_DYNAMIC - * External buffer: DUK_HBUFFER_FLAG_DYNAMIC | DUK_HBUFFER_FLAG_EXTERNAL - */ - -#define DUK_HBUFFER_FLAG_DYNAMIC DUK_HEAPHDR_USER_FLAG(0) /* buffer is behind a pointer, dynamic or external */ -#define DUK_HBUFFER_FLAG_EXTERNAL DUK_HEAPHDR_USER_FLAG(1) /* buffer pointer is to an externally allocated buffer */ - -#define DUK_HBUFFER_HAS_DYNAMIC(x) DUK_HEAPHDR_CHECK_FLAG_BITS(&(x)->hdr, DUK_HBUFFER_FLAG_DYNAMIC) -#define DUK_HBUFFER_HAS_EXTERNAL(x) DUK_HEAPHDR_CHECK_FLAG_BITS(&(x)->hdr, DUK_HBUFFER_FLAG_EXTERNAL) - -#define DUK_HBUFFER_SET_DYNAMIC(x) DUK_HEAPHDR_SET_FLAG_BITS(&(x)->hdr, DUK_HBUFFER_FLAG_DYNAMIC) -#define DUK_HBUFFER_SET_EXTERNAL(x) DUK_HEAPHDR_SET_FLAG_BITS(&(x)->hdr, DUK_HBUFFER_FLAG_EXTERNAL) - -#define DUK_HBUFFER_CLEAR_DYNAMIC(x) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(x)->hdr, DUK_HBUFFER_FLAG_DYNAMIC) -#define DUK_HBUFFER_CLEAR_EXTERNAL(x) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(x)->hdr, DUK_HBUFFER_FLAG_EXTERNAL) - -/* - * Misc defines - */ - -/* Impose a maximum buffer length for now. Restricted artificially to - * ensure resize computations or adding a heap header length won't - * overflow size_t and that a signed duk_int_t can hold a buffer - * length. The limit should be synchronized with DUK_HSTRING_MAX_BYTELEN. - */ - -#if defined(DUK_USE_BUFLEN16) -#define DUK_HBUFFER_MAX_BYTELEN (0x0000ffffUL) -#else -/* Intentionally not 0x7fffffffUL; at least JSON code expects that - * 2*len + 2 fits in 32 bits. - */ -#define DUK_HBUFFER_MAX_BYTELEN (0x7ffffffeUL) -#endif - -/* - * Field access - */ - -#if defined(DUK_USE_BUFLEN16) -/* size stored in duk_heaphdr unused flag bits */ -#define DUK_HBUFFER_GET_SIZE(x) ((x)->hdr.h_flags >> 16) -#define DUK_HBUFFER_SET_SIZE(x, v) \ - do { \ - duk_size_t duk__v; \ - duk__v = (v); \ - DUK_ASSERT(duk__v <= 0xffffUL); \ - (x)->hdr.h_flags = ((x)->hdr.h_flags & 0x0000ffffUL) | (((duk_uint32_t) duk__v) << 16); \ - } while (0) -#define DUK_HBUFFER_ADD_SIZE(x, dv) \ - do { \ - (x)->hdr.h_flags += ((dv) << 16); \ - } while (0) -#define DUK_HBUFFER_SUB_SIZE(x, dv) \ - do { \ - (x)->hdr.h_flags -= ((dv) << 16); \ - } while (0) -#else -#define DUK_HBUFFER_GET_SIZE(x) (((duk_hbuffer *) (x))->size) -#define DUK_HBUFFER_SET_SIZE(x, v) \ - do { \ - ((duk_hbuffer *) (x))->size = (v); \ - } while (0) -#define DUK_HBUFFER_ADD_SIZE(x, dv) \ - do { \ - (x)->size += (dv); \ - } while (0) -#define DUK_HBUFFER_SUB_SIZE(x, dv) \ - do { \ - (x)->size -= (dv); \ - } while (0) -#endif - -#define DUK_HBUFFER_FIXED_GET_SIZE(x) DUK_HBUFFER_GET_SIZE((duk_hbuffer *) (x)) -#define DUK_HBUFFER_FIXED_SET_SIZE(x, v) DUK_HBUFFER_SET_SIZE((duk_hbuffer *) (x)) - -#define DUK_HBUFFER_DYNAMIC_GET_SIZE(x) DUK_HBUFFER_GET_SIZE((duk_hbuffer *) (x)) -#define DUK_HBUFFER_DYNAMIC_SET_SIZE(x, v) DUK_HBUFFER_SET_SIZE((duk_hbuffer *) (x), (v)) -#define DUK_HBUFFER_DYNAMIC_ADD_SIZE(x, dv) DUK_HBUFFER_ADD_SIZE((duk_hbuffer *) (x), (dv)) -#define DUK_HBUFFER_DYNAMIC_SUB_SIZE(x, dv) DUK_HBUFFER_SUB_SIZE((duk_hbuffer *) (x), (dv)) - -#define DUK_HBUFFER_EXTERNAL_GET_SIZE(x) DUK_HBUFFER_GET_SIZE((duk_hbuffer *) (x)) -#define DUK_HBUFFER_EXTERNAL_SET_SIZE(x, v) DUK_HBUFFER_SET_SIZE((duk_hbuffer *) (x), (v)) - -#define DUK_HBUFFER_FIXED_GET_DATA_PTR(heap, x) ((duk_uint8_t *) (((duk_hbuffer_fixed *) (void *) (x)) + 1)) - -#if defined(DUK_USE_HEAPPTR16) -#define DUK_HBUFFER_DYNAMIC_GET_DATA_PTR(heap, x) \ - ((void *) DUK_USE_HEAPPTR_DEC16((heap)->heap_udata, ((duk_heaphdr *) (x))->h_extra16)) -#define DUK_HBUFFER_DYNAMIC_SET_DATA_PTR(heap, x, v) \ - do { \ - ((duk_heaphdr *) (x))->h_extra16 = DUK_USE_HEAPPTR_ENC16((heap)->heap_udata, (void *) (v)); \ - } while (0) -#define DUK_HBUFFER_DYNAMIC_SET_DATA_PTR_NULL(heap, x) \ - do { \ - ((duk_heaphdr *) (x))->h_extra16 = 0; /* assume 0 <=> NULL */ \ - } while (0) -#else -#define DUK_HBUFFER_DYNAMIC_GET_DATA_PTR(heap, x) ((x)->curr_alloc) -#define DUK_HBUFFER_DYNAMIC_SET_DATA_PTR(heap, x, v) \ - do { \ - (x)->curr_alloc = (void *) (v); \ - } while (0) -#define DUK_HBUFFER_DYNAMIC_SET_DATA_PTR_NULL(heap, x) \ - do { \ - (x)->curr_alloc = (void *) NULL; \ - } while (0) -#endif - -/* No pointer compression because pointer is potentially outside of - * Duktape heap. - */ -#if defined(DUK_USE_HEAPPTR16) -#define DUK_HBUFFER_EXTERNAL_GET_DATA_PTR(heap, x) ((void *) (x)->curr_alloc) -#define DUK_HBUFFER_EXTERNAL_SET_DATA_PTR(heap, x, v) \ - do { \ - (x)->curr_alloc = (void *) (v); \ - } while (0) -#define DUK_HBUFFER_EXTERNAL_SET_DATA_PTR_NULL(heap, x) \ - do { \ - (x)->curr_alloc = (void *) NULL; \ - } while (0) -#else -#define DUK_HBUFFER_EXTERNAL_GET_DATA_PTR(heap, x) ((void *) (x)->curr_alloc) -#define DUK_HBUFFER_EXTERNAL_SET_DATA_PTR(heap, x, v) \ - do { \ - (x)->curr_alloc = (void *) (v); \ - } while (0) -#define DUK_HBUFFER_EXTERNAL_SET_DATA_PTR_NULL(heap, x) \ - do { \ - (x)->curr_alloc = (void *) NULL; \ - } while (0) -#endif - -/* Get a pointer to the current buffer contents (matching current allocation - * size). May be NULL for zero size dynamic/external buffer. - */ -#if defined(DUK_USE_HEAPPTR16) -#define DUK_HBUFFER_GET_DATA_PTR(heap, x) \ - (DUK_HBUFFER_HAS_DYNAMIC((x)) ? \ - (DUK_HBUFFER_HAS_EXTERNAL((x)) ? DUK_HBUFFER_EXTERNAL_GET_DATA_PTR((heap), (duk_hbuffer_external *) (x)) : \ - DUK_HBUFFER_DYNAMIC_GET_DATA_PTR((heap), (duk_hbuffer_dynamic *) (x))) : \ - DUK_HBUFFER_FIXED_GET_DATA_PTR((heap), (duk_hbuffer_fixed *) (void *) (x))) -#else -/* Without heap pointer compression duk_hbuffer_dynamic and duk_hbuffer_external - * have the same layout so checking for fixed vs. dynamic (or external) is enough. - */ -#define DUK_HBUFFER_GET_DATA_PTR(heap, x) \ - (DUK_HBUFFER_HAS_DYNAMIC((x)) ? DUK_HBUFFER_DYNAMIC_GET_DATA_PTR((heap), (duk_hbuffer_dynamic *) (x)) : \ - DUK_HBUFFER_FIXED_GET_DATA_PTR((heap), (duk_hbuffer_fixed *) (void *) (x))) -#endif - -/* Validity assert. */ -#if defined(DUK_USE_ASSERTIONS) -DUK_INTERNAL_DECL void duk_hbuffer_assert_valid(duk_hbuffer *h); -#define DUK_HBUFFER_ASSERT_VALID(h) \ - do { \ - duk_hbuffer_assert_valid((h)); \ - } while (0) -#else -#define DUK_HBUFFER_ASSERT_VALID(h) \ - do { \ - } while (0) -#endif - -/* - * Structs - */ - -/* Shared prefix for all buffer types. */ -struct duk_hbuffer { - duk_heaphdr hdr; - - /* It's not strictly necessary to track the current size, but - * it is useful for writing robust native code. - */ - - /* Current size. */ -#if defined(DUK_USE_BUFLEN16) - /* Stored in duk_heaphdr unused flags. */ -#else - duk_size_t size; -#endif - - /* - * Data following the header depends on the DUK_HBUFFER_FLAG_DYNAMIC - * flag. - * - * If the flag is clear (the buffer is a fixed size one), the buffer - * data follows the header directly, consisting of 'size' bytes. - * - * If the flag is set, the actual buffer is allocated separately, and - * a few control fields follow the header. Specifically: - * - * - a "void *" pointing to the current allocation - * - a duk_size_t indicating the full allocated size (always >= 'size') - * - * If DUK_HBUFFER_FLAG_EXTERNAL is set, the buffer has been allocated - * by user code, so that Duktape won't be able to resize it and won't - * free it. This allows buffers to point to e.g. an externally - * allocated structure such as a frame buffer. - * - * Unlike strings, no terminator byte (NUL) is guaranteed after the - * data. This would be convenient, but would pad aligned user buffers - * unnecessarily upwards in size. For instance, if user code requested - * a 64-byte dynamic buffer, 65 bytes would actually be allocated which - * would then potentially round upwards to perhaps 68 or 72 bytes. - */ -}; - -/* Fixed buffer; data follows struct, with proper alignment guaranteed by - * struct size. - */ -#if (DUK_USE_ALIGN_BY == 8) && defined(DUK_USE_PACK_MSVC_PRAGMA) -#pragma pack(push, 8) -#endif -struct duk_hbuffer_fixed { - /* A union is used here as a portable struct size / alignment trick: - * by adding a 32-bit or a 64-bit (unused) union member, the size of - * the struct is effectively forced to be a multiple of 4 or 8 bytes - * (respectively) without increasing the size of the struct unless - * necessary. - */ - union { - struct { - duk_heaphdr hdr; -#if defined(DUK_USE_BUFLEN16) - /* Stored in duk_heaphdr unused flags. */ -#else - duk_size_t size; -#endif - } s; -#if (DUK_USE_ALIGN_BY == 4) - duk_uint32_t dummy_for_align4; -#elif (DUK_USE_ALIGN_BY == 8) - duk_double_t dummy_for_align8_1; -#if defined(DUK_USE_64BIT_OPS) - duk_uint64_t dummy_for_align8_2; -#endif -#elif (DUK_USE_ALIGN_BY == 1) - /* no extra padding */ -#else -#error invalid DUK_USE_ALIGN_BY -#endif - } u; - - /* - * Data follows the struct header. The struct size is padded by the - * compiler based on the struct members. This guarantees that the - * buffer data will be aligned-by-4 but not necessarily aligned-by-8. - * - * On platforms where alignment does not matter, the struct padding - * could be removed (if there is any). On platforms where alignment - * by 8 is required, the struct size must be forced to be a multiple - * of 8 by some means. Without it, some user code may break, and also - * Duktape itself breaks (e.g. the compiler stores duk_tvals in a - * dynamic buffer). - */ -} -#if (DUK_USE_ALIGN_BY == 8) && defined(DUK_USE_PACK_GCC_ATTR) -__attribute__((aligned(8))) -#elif (DUK_USE_ALIGN_BY == 8) && defined(DUK_USE_PACK_CLANG_ATTR) -__attribute__((aligned(8))) -#endif -; -#if (DUK_USE_ALIGN_BY == 8) && defined(DUK_USE_PACK_MSVC_PRAGMA) -#pragma pack(pop) -#endif - -/* Dynamic buffer with 'curr_alloc' pointing to a dynamic area allocated using - * heap allocation primitives. Also used for external buffers when low memory - * options are not used. - */ -struct duk_hbuffer_dynamic { - duk_heaphdr hdr; - -#if defined(DUK_USE_BUFLEN16) - /* Stored in duk_heaphdr unused flags. */ -#else - duk_size_t size; -#endif - -#if defined(DUK_USE_HEAPPTR16) - /* Stored in duk_heaphdr h_extra16. */ -#else - void *curr_alloc; /* may be NULL if alloc_size == 0 */ -#endif - - /* - * Allocation size for 'curr_alloc' is alloc_size. There is no - * automatic NUL terminator for buffers (see above for rationale). - * - * 'curr_alloc' is explicitly allocated with heap allocation - * primitives and will thus always have alignment suitable for - * e.g. duk_tval and an IEEE double. - */ -}; - -/* External buffer with 'curr_alloc' managed by user code and pointing to an - * arbitrary address. When heap pointer compression is not used, this struct - * has the same layout as duk_hbuffer_dynamic. - */ -struct duk_hbuffer_external { - duk_heaphdr hdr; - -#if defined(DUK_USE_BUFLEN16) - /* Stored in duk_heaphdr unused flags. */ -#else - duk_size_t size; -#endif - - /* Cannot be compressed as a heap pointer because may point to - * an arbitrary address. - */ - void *curr_alloc; /* may be NULL if alloc_size == 0 */ -}; - -/* - * Prototypes - */ - -DUK_INTERNAL_DECL duk_hbuffer *duk_hbuffer_alloc(duk_heap *heap, duk_size_t size, duk_small_uint_t flags, void **out_bufdata); -DUK_INTERNAL_DECL void *duk_hbuffer_get_dynalloc_ptr(duk_heap *heap, void *ud); /* indirect allocs */ - -/* dynamic buffer ops */ -DUK_INTERNAL_DECL void duk_hbuffer_resize(duk_hthread *thr, duk_hbuffer_dynamic *buf, duk_size_t new_size); -DUK_INTERNAL_DECL void duk_hbuffer_reset(duk_hthread *thr, duk_hbuffer_dynamic *buf); - -#endif /* DUK_HBUFFER_H_INCLUDED */ -/* #include duk_hproxy.h */ -#line 1 "duk_hproxy.h" -/* - * Proxy object representation. - */ - -#if !defined(DUK_HPROXY_H_INCLUDED) -#define DUK_HPROXY_H_INCLUDED - -#if defined(DUK_USE_ASSERTIONS) -DUK_INTERNAL_DECL void duk_hproxy_assert_valid(duk_hproxy *h); -#define DUK_HPROXY_ASSERT_VALID(h) \ - do { \ - duk_hproxy_assert_valid((h)); \ - } while (0) -#else -#define DUK_HPROXY_ASSERT_VALID(h) \ - do { \ - } while (0) -#endif - -struct duk_hproxy { - /* Shared object part. */ - duk_hobject obj; - - /* Proxy target object. */ - duk_hobject *target; - - /* Proxy handlers (traps). */ - duk_hobject *handler; -}; - -#endif /* DUK_HPROXY_H_INCLUDED */ -/* #include duk_heap.h */ -#line 1 "duk_heap.h" -/* - * Heap structure. - * - * Heap contains allocated heap objects, interned strings, and built-in - * strings for one or more threads. - */ - -#if !defined(DUK_HEAP_H_INCLUDED) -#define DUK_HEAP_H_INCLUDED - -/* alloc function typedefs in duktape.h */ - -/* - * Heap flags - */ - -#define DUK_HEAP_FLAG_MARKANDSWEEP_RECLIMIT_REACHED \ - (1U << 0) /* mark-and-sweep marking reached a recursion limit and must use multi-pass marking */ -#define DUK_HEAP_FLAG_INTERRUPT_RUNNING (1U << 1) /* executor interrupt running (used to avoid nested interrupts) */ -#define DUK_HEAP_FLAG_FINALIZER_NORESCUE (1U << 2) /* heap destruction ongoing, finalizer rescue no longer possible */ -#define DUK_HEAP_FLAG_DEBUGGER_PAUSED (1U << 3) /* debugger is paused: talk with debug client until step/resume */ - -#define DUK__HEAP_HAS_FLAGS(heap, bits) ((heap)->flags & (bits)) -#define DUK__HEAP_SET_FLAGS(heap, bits) \ - do { \ - (heap)->flags |= (bits); \ - } while (0) -#define DUK__HEAP_CLEAR_FLAGS(heap, bits) \ - do { \ - (heap)->flags &= ~(bits); \ - } while (0) - -#define DUK_HEAP_HAS_MARKANDSWEEP_RECLIMIT_REACHED(heap) DUK__HEAP_HAS_FLAGS((heap), DUK_HEAP_FLAG_MARKANDSWEEP_RECLIMIT_REACHED) -#define DUK_HEAP_HAS_INTERRUPT_RUNNING(heap) DUK__HEAP_HAS_FLAGS((heap), DUK_HEAP_FLAG_INTERRUPT_RUNNING) -#define DUK_HEAP_HAS_FINALIZER_NORESCUE(heap) DUK__HEAP_HAS_FLAGS((heap), DUK_HEAP_FLAG_FINALIZER_NORESCUE) -#define DUK_HEAP_HAS_DEBUGGER_PAUSED(heap) DUK__HEAP_HAS_FLAGS((heap), DUK_HEAP_FLAG_DEBUGGER_PAUSED) - -#define DUK_HEAP_SET_MARKANDSWEEP_RECLIMIT_REACHED(heap) DUK__HEAP_SET_FLAGS((heap), DUK_HEAP_FLAG_MARKANDSWEEP_RECLIMIT_REACHED) -#define DUK_HEAP_SET_INTERRUPT_RUNNING(heap) DUK__HEAP_SET_FLAGS((heap), DUK_HEAP_FLAG_INTERRUPT_RUNNING) -#define DUK_HEAP_SET_FINALIZER_NORESCUE(heap) DUK__HEAP_SET_FLAGS((heap), DUK_HEAP_FLAG_FINALIZER_NORESCUE) -#define DUK_HEAP_SET_DEBUGGER_PAUSED(heap) DUK__HEAP_SET_FLAGS((heap), DUK_HEAP_FLAG_DEBUGGER_PAUSED) - -#define DUK_HEAP_CLEAR_MARKANDSWEEP_RECLIMIT_REACHED(heap) \ - DUK__HEAP_CLEAR_FLAGS((heap), DUK_HEAP_FLAG_MARKANDSWEEP_RECLIMIT_REACHED) -#define DUK_HEAP_CLEAR_INTERRUPT_RUNNING(heap) DUK__HEAP_CLEAR_FLAGS((heap), DUK_HEAP_FLAG_INTERRUPT_RUNNING) -#define DUK_HEAP_CLEAR_FINALIZER_NORESCUE(heap) DUK__HEAP_CLEAR_FLAGS((heap), DUK_HEAP_FLAG_FINALIZER_NORESCUE) -#define DUK_HEAP_CLEAR_DEBUGGER_PAUSED(heap) DUK__HEAP_CLEAR_FLAGS((heap), DUK_HEAP_FLAG_DEBUGGER_PAUSED) - -/* - * Longjmp types, also double as identifying continuation type for a rethrow (in 'finally') - */ - -#define DUK_LJ_TYPE_UNKNOWN 0 /* unused */ -#define DUK_LJ_TYPE_THROW 1 /* value1 -> error object */ -#define DUK_LJ_TYPE_YIELD 2 /* value1 -> yield value, iserror -> error / normal */ -#define DUK_LJ_TYPE_RESUME 3 /* value1 -> resume value, value2 -> resumee thread, iserror -> error/normal */ -#define DUK_LJ_TYPE_BREAK 4 /* value1 -> label number, pseudo-type to indicate a break continuation (for ENDFIN) */ -#define DUK_LJ_TYPE_CONTINUE 5 /* value1 -> label number, pseudo-type to indicate a continue continuation (for ENDFIN) */ -#define DUK_LJ_TYPE_RETURN 6 /* value1 -> return value, pseudo-type to indicate a return continuation (for ENDFIN) */ -#define DUK_LJ_TYPE_NORMAL 7 /* no value, pseudo-type to indicate a normal continuation (for ENDFIN) */ - -/* - * Mark-and-sweep flags - * - * These are separate from heap level flags now but could be merged. - * The heap structure only contains a 'base mark-and-sweep flags' - * field and the GC caller can impose further flags. - */ - -/* Emergency mark-and-sweep: try extra hard, even at the cost of - * performance. - */ -#define DUK_MS_FLAG_EMERGENCY (1U << 0) - -/* Postpone rescue decisions for reachable objects with FINALIZED set. - * Used during finalize_list processing to avoid incorrect rescue - * decisions due to finalize_list being a reachability root. - */ -#define DUK_MS_FLAG_POSTPONE_RESCUE (1U << 1) - -/* Don't compact objects; needed during object property table resize - * to prevent a recursive resize. It would suffice to protect only the - * current object being resized, but this is not yet implemented. - */ -#define DUK_MS_FLAG_NO_OBJECT_COMPACTION (1U << 2) - -/* - * Thread switching - * - * To switch heap->curr_thread, use the macro below so that interrupt counters - * get updated correctly. The macro allows a NULL target thread because that - * happens e.g. in call handling. - */ - -#if defined(DUK_USE_INTERRUPT_COUNTER) -#define DUK_HEAP_SWITCH_THREAD(heap, newthr) duk_heap_switch_thread((heap), (newthr)) -#else -#define DUK_HEAP_SWITCH_THREAD(heap, newthr) \ - do { \ - (heap)->curr_thread = (newthr); \ - } while (0) -#endif - -/* - * Stats - */ - -#if defined(DUK_USE_DEBUG) -#define DUK_STATS_INC(heap, fieldname) \ - do { \ - (heap)->fieldname += 1; \ - } while (0) -#else -#define DUK_STATS_INC(heap, fieldname) \ - do { \ - } while (0) -#endif - -/* - * Other heap related defines - */ - -/* Mark-and-sweep interval is relative to combined count of objects and - * strings kept in the heap during the latest mark-and-sweep pass. - * Fixed point .8 multiplier and .0 adder. Trigger count (interval) is - * decreased by each (re)allocation attempt (regardless of size), and each - * refzero processed object. - * - * 'SKIP' indicates how many (re)allocations to wait until a retry if - * GC is skipped because there is no thread do it with yet (happens - * only during init phases). - */ -#if defined(DUK_USE_REFERENCE_COUNTING) -#define DUK_HEAP_MARK_AND_SWEEP_TRIGGER_MULT 12800L /* 50x heap size */ -#define DUK_HEAP_MARK_AND_SWEEP_TRIGGER_ADD 1024L -#define DUK_HEAP_MARK_AND_SWEEP_TRIGGER_SKIP 256L -#else -#define DUK_HEAP_MARK_AND_SWEEP_TRIGGER_MULT 256L /* 1x heap size */ -#define DUK_HEAP_MARK_AND_SWEEP_TRIGGER_ADD 1024L -#define DUK_HEAP_MARK_AND_SWEEP_TRIGGER_SKIP 256L -#endif - -/* GC torture. */ -#if defined(DUK_USE_GC_TORTURE) -#define DUK_GC_TORTURE(heap) \ - do { \ - duk_heap_mark_and_sweep((heap), 0); \ - } while (0) -#else -#define DUK_GC_TORTURE(heap) \ - do { \ - } while (0) -#endif - -/* Stringcache is used for speeding up char-offset-to-byte-offset - * translations for non-ASCII strings. - */ -#define DUK_HEAP_STRCACHE_SIZE 4 -#define DUK_HEAP_STRINGCACHE_NOCACHE_LIMIT 16 /* strings up to the this length are not cached */ - -/* Some list management macros. */ -#define DUK_HEAP_INSERT_INTO_HEAP_ALLOCATED(heap, hdr) duk_heap_insert_into_heap_allocated((heap), (hdr)) -#if defined(DUK_USE_REFERENCE_COUNTING) -#define DUK_HEAP_REMOVE_FROM_HEAP_ALLOCATED(heap, hdr) duk_heap_remove_from_heap_allocated((heap), (hdr)) -#endif -#if defined(DUK_USE_FINALIZER_SUPPORT) -#define DUK_HEAP_INSERT_INTO_FINALIZE_LIST(heap, hdr) duk_heap_insert_into_finalize_list((heap), (hdr)) -#define DUK_HEAP_REMOVE_FROM_FINALIZE_LIST(heap, hdr) duk_heap_remove_from_finalize_list((heap), (hdr)) -#endif - -/* - * Built-in strings - */ - -/* heap string indices are autogenerated in duk_strings.h */ -#if defined(DUK_USE_ROM_STRINGS) -#define DUK_HEAP_GET_STRING(heap, idx) ((duk_hstring *) DUK_LOSE_CONST(duk_rom_strings_stridx[(idx)])) -#else /* DUK_USE_ROM_STRINGS */ -#if defined(DUK_USE_HEAPPTR16) -#define DUK_HEAP_GET_STRING(heap, idx) ((duk_hstring *) DUK_USE_HEAPPTR_DEC16((heap)->heap_udata, (heap)->strs16[(idx)])) -#else -#define DUK_HEAP_GET_STRING(heap, idx) ((heap)->strs[(idx)]) -#endif -#endif /* DUK_USE_ROM_STRINGS */ - -/* - * Raw memory calls: relative to heap, but no GC interaction - */ - -#define DUK_ALLOC_RAW(heap, size) ((heap)->alloc_func((heap)->heap_udata, (size))) - -#define DUK_REALLOC_RAW(heap, ptr, newsize) ((heap)->realloc_func((heap)->heap_udata, (void *) (ptr), (newsize))) - -#define DUK_FREE_RAW(heap, ptr) ((heap)->free_func((heap)->heap_udata, (void *) (ptr))) - -/* - * Memory calls: relative to heap, GC interaction, but no error throwing. - * - * XXX: Currently a mark-and-sweep triggered by memory allocation will run - * using the heap->heap_thread. This thread is also used for running - * mark-and-sweep finalization; this is not ideal because it breaks the - * isolation between multiple global environments. - * - * Notes: - * - * - DUK_FREE() is required to ignore NULL and any other possible return - * value of a zero-sized alloc/realloc (same as ANSI C free()). - * - * - There is no DUK_REALLOC_ZEROED because we don't assume to know the - * old size. Caller must zero the reallocated memory. - * - * - DUK_REALLOC_INDIRECT() must be used when a mark-and-sweep triggered - * by an allocation failure might invalidate the original 'ptr', thus - * causing a realloc retry to use an invalid pointer. Example: we're - * reallocating the value stack and a finalizer resizes the same value - * stack during mark-and-sweep. The indirect variant requests for the - * current location of the pointer being reallocated using a callback - * right before every realloc attempt; this circuitous approach is used - * to avoid strict aliasing issues in a more straightforward indirect - * pointer (void **) approach. Note: the pointer in the storage - * location is read but is NOT updated; the caller must do that. - */ - -/* callback for indirect reallocs, request for current pointer */ -typedef void *(*duk_mem_getptr)(duk_heap *heap, void *ud); - -#define DUK_ALLOC(heap, size) duk_heap_mem_alloc((heap), (size)) -#define DUK_ALLOC_ZEROED(heap, size) duk_heap_mem_alloc_zeroed((heap), (size)) -#define DUK_REALLOC(heap, ptr, newsize) duk_heap_mem_realloc((heap), (ptr), (newsize)) -#define DUK_REALLOC_INDIRECT(heap, cb, ud, newsize) duk_heap_mem_realloc_indirect((heap), (cb), (ud), (newsize)) -#define DUK_FREE(heap, ptr) duk_heap_mem_free((heap), (ptr)) - -/* - * Checked allocation, relative to a thread - * - * DUK_FREE_CHECKED() doesn't actually throw, but accepts a 'thr' argument - * for convenience. - */ - -#define DUK_ALLOC_CHECKED(thr, size) duk_heap_mem_alloc_checked((thr), (size)) -#define DUK_ALLOC_CHECKED_ZEROED(thr, size) duk_heap_mem_alloc_checked_zeroed((thr), (size)) -#define DUK_FREE_CHECKED(thr, ptr) duk_heap_mem_free((thr)->heap, (ptr)) - -/* - * Memory constants - */ - -#define DUK_HEAP_ALLOC_FAIL_MARKANDSWEEP_LIMIT \ - 10 /* Retry allocation after mark-and-sweep for this \ - * many times. A single mark-and-sweep round is \ - * not guaranteed to free all unreferenced memory \ - * because of finalization (in fact, ANY number of \ - * rounds is strictly not enough). \ - */ - -#define DUK_HEAP_ALLOC_FAIL_MARKANDSWEEP_EMERGENCY_LIMIT \ - 3 /* Starting from this round, use emergency mode \ - * for mark-and-sweep. \ - */ - -/* - * Debugger support - */ - -/* Maximum number of breakpoints. Only breakpoints that are set are - * consulted so increasing this has no performance impact. - */ -#define DUK_HEAP_MAX_BREAKPOINTS 16 - -/* Opcode interval for a Date-based status/peek rate limit check. Only - * relevant when debugger is attached. Requesting a timestamp may be a - * slow operation on some platforms so this shouldn't be too low. On the - * other hand a high value makes Duktape react to a pause request slowly. - */ -#define DUK_HEAP_DBG_RATELIMIT_OPCODES 4000 - -/* Milliseconds between status notify and transport peeks. */ -#define DUK_HEAP_DBG_RATELIMIT_MILLISECS 200 - -/* Debugger pause flags. */ -#define DUK_PAUSE_FLAG_ONE_OPCODE (1U << 0) /* pause when a single opcode has been executed */ -#define DUK_PAUSE_FLAG_ONE_OPCODE_ACTIVE (1U << 1) /* one opcode pause actually active; artifact of current implementation */ -#define DUK_PAUSE_FLAG_LINE_CHANGE (1U << 2) /* pause when current line number changes */ -#define DUK_PAUSE_FLAG_FUNC_ENTRY (1U << 3) /* pause when entering a function */ -#define DUK_PAUSE_FLAG_FUNC_EXIT (1U << 4) /* pause when exiting current function */ -#define DUK_PAUSE_FLAG_CAUGHT_ERROR (1U << 5) /* pause when about to throw an error that is caught */ -#define DUK_PAUSE_FLAG_UNCAUGHT_ERROR (1U << 6) /* pause when about to throw an error that won't be caught */ - -struct duk_breakpoint { - duk_hstring *filename; - duk_uint32_t line; -}; - -/* - * String cache should ideally be at duk_hthread level, but that would - * cause string finalization to slow down relative to the number of - * threads; string finalization must check the string cache for "weak" - * references to the string being finalized to avoid dead pointers. - * - * Thus, string caches are now at the heap level now. - */ - -struct duk_strcache_entry { - duk_hstring *h; - duk_uint32_t bidx; - duk_uint32_t cidx; -}; - -/* - * Longjmp state, contains the information needed to perform a longjmp. - * Longjmp related values are written to value1, value2, and iserror. - */ - -struct duk_ljstate { - duk_jmpbuf *jmpbuf_ptr; /* current setjmp() catchpoint */ - duk_small_uint_t type; /* longjmp type */ - duk_bool_t iserror; /* isError flag for yield */ - duk_tval value1; /* 1st related value (type specific) */ - duk_tval value2; /* 2nd related value (type specific) */ -}; - -#define DUK_ASSERT_LJSTATE_UNSET(heap) \ - do { \ - DUK_ASSERT(heap != NULL); \ - DUK_ASSERT(heap->lj.type == DUK_LJ_TYPE_UNKNOWN); \ - DUK_ASSERT(heap->lj.iserror == 0); \ - DUK_ASSERT(DUK_TVAL_IS_UNDEFINED(&heap->lj.value1)); \ - DUK_ASSERT(DUK_TVAL_IS_UNDEFINED(&heap->lj.value2)); \ - } while (0) -#define DUK_ASSERT_LJSTATE_SET(heap) \ - do { \ - DUK_ASSERT(heap != NULL); \ - DUK_ASSERT(heap->lj.type != DUK_LJ_TYPE_UNKNOWN); \ - } while (0) - -/* - * Literal intern cache - */ - -struct duk_litcache_entry { - const duk_uint8_t *addr; - duk_hstring *h; -}; - -/* - * Main heap structure - */ - -#if defined(DUK_USE_ASSERTIONS) -DUK_INTERNAL_DECL void duk_heap_assert_valid(duk_heap *heap); -#define DUK_HEAP_ASSERT_VALID(heap) \ - do { \ - duk_heap_assert_valid((heap)); \ - } while (0) -#else -#define DUK_HEAP_ASSERT_VALID(heap) \ - do { \ - } while (0) -#endif - -struct duk_heap { - duk_small_uint_t flags; - - /* Allocator functions. */ - duk_alloc_function alloc_func; - duk_realloc_function realloc_func; - duk_free_function free_func; - - /* Heap udata, used for allocator functions but also for other heap - * level callbacks like fatal function, pointer compression, etc. - */ - void *heap_udata; - - /* Fatal error handling, called e.g. when a longjmp() is needed but - * lj.jmpbuf_ptr is NULL. fatal_func must never return; it's not - * declared as "noreturn" because doing that for typedefs is a bit - * challenging portability-wise. - */ - duk_fatal_function fatal_func; - - /* Main list of allocated heap objects. Objects are either here, - * in finalize_list waiting for processing, or in refzero_list - * temporarily while a DECREF refzero cascade finishes. - */ - duk_heaphdr *heap_allocated; - - /* Temporary work list for freeing a cascade of objects when a DECREF - * (or DECREF_NORZ) encounters a zero refcount. Using a work list - * allows fixed C stack size when refcounts go to zero for a chain of - * objects. Outside of DECREF this is always a NULL because DECREF is - * processed without side effects (only memory free calls). - */ -#if defined(DUK_USE_REFERENCE_COUNTING) - duk_heaphdr *refzero_list; -#endif - -#if defined(DUK_USE_FINALIZER_SUPPORT) - /* Work list for objects to be finalized. */ - duk_heaphdr *finalize_list; -#if defined(DUK_USE_ASSERTIONS) - /* Object whose finalizer is executing right now (no nesting). */ - duk_heaphdr *currently_finalizing; -#endif -#endif - - /* Freelist for duk_activations and duk_catchers. */ -#if defined(DUK_USE_CACHE_ACTIVATION) - duk_activation *activation_free; -#endif -#if defined(DUK_USE_CACHE_CATCHER) - duk_catcher *catcher_free; -#endif - - /* Voluntary mark-and-sweep trigger counter. Intentionally signed - * because we continue decreasing the value when voluntary GC cannot - * run. - */ -#if defined(DUK_USE_VOLUNTARY_GC) - duk_int_t ms_trigger_counter; -#endif - - /* Mark-and-sweep recursion control: too deep recursion causes - * multi-pass processing to avoid growing C stack without bound. - */ - duk_uint_t ms_recursion_depth; - - /* Mark-and-sweep flags automatically active (used for critical sections). */ - duk_small_uint_t ms_base_flags; - - /* Mark-and-sweep running flag. Prevents re-entry, and also causes - * refzero events to be ignored (= objects won't be queued to refzero_list). - * - * 0: mark-and-sweep not running - * 1: mark-and-sweep is running - * 2: heap destruction active or debugger active, prevent mark-and-sweep - * and refzero processing (but mark-and-sweep not itself running) - */ - duk_uint_t ms_running; - - /* Mark-and-sweep prevent count, stacking. Used to avoid M&S side - * effects (besides finalizers which are controlled separately) such - * as compacting the string table or object property tables. This - * is also bumped when ms_running is set to prevent recursive re-entry. - * Can also be bumped when mark-and-sweep is not running. - */ - duk_uint_t ms_prevent_count; - - /* Finalizer processing prevent count, stacking. Bumped when finalizers - * are processed to prevent recursive finalizer processing (first call site - * processing finalizers handles all finalizers until the list is empty). - * Can also be bumped explicitly to prevent finalizer execution. - */ - duk_uint_t pf_prevent_count; - - /* When processing finalize_list, don't actually run finalizers but - * queue finalizable objects back to heap_allocated as is. This is - * used during heap destruction to deal with finalizers that keep - * on creating more finalizable garbage. - */ - duk_uint_t pf_skip_finalizers; - -#if defined(DUK_USE_ASSERTIONS) - /* Set when we're in a critical path where an error throw would cause - * e.g. sandboxing/protected call violations or state corruption. This - * is just used for asserts. - */ - duk_bool_t error_not_allowed; -#endif - -#if defined(DUK_USE_ASSERTIONS) - /* Set when heap is still being initialized, helps with writing - * some assertions. - */ - duk_bool_t heap_initializing; -#endif - - /* Marker for detecting internal "double faults", errors thrown when - * we're trying to create an error object, see duk_error_throw.c. - */ - duk_bool_t creating_error; - - /* Marker for indicating we're calling a user error augmentation - * (errCreate/errThrow) function. Errors created/thrown during - * such a call are not augmented. - */ -#if defined(DUK_USE_AUGMENT_ERROR_THROW) || defined(DUK_USE_AUGMENT_ERROR_CREATE) - duk_bool_t augmenting_error; -#endif - - /* Longjmp state. */ - duk_ljstate lj; - - /* Heap thread, used internally and for finalization. */ - duk_hthread *heap_thread; - - /* Current running thread. */ - duk_hthread *curr_thread; - - /* Heap level "stash" object (e.g., various reachability roots). */ - duk_hobject *heap_object; - - /* duk_handle_call / duk_handle_safe_call recursion depth limiting */ - duk_int_t call_recursion_depth; - duk_int_t call_recursion_limit; - - /* Mix-in value for computing string hashes; should be reasonably unpredictable. */ - duk_uint32_t hash_seed; - - /* Random number state for duk_util_tinyrandom.c. */ -#if !defined(DUK_USE_GET_RANDOM_DOUBLE) -#if defined(DUK_USE_PREFER_SIZE) || !defined(DUK_USE_64BIT_OPS) - duk_uint32_t rnd_state; /* State for Shamir's three-op algorithm */ -#else - duk_uint64_t rnd_state[2]; /* State for xoroshiro128+ */ -#endif -#endif - - /* Counter for unique local symbol creation. */ - /* XXX: When 64-bit types are available, it would be more efficient to - * use a duk_uint64_t at least for incrementing but maybe also for - * string formatting in the Symbol constructor. - */ - duk_uint32_t sym_counter[2]; - - /* For manual debugging: instruction count based on executor and - * interrupt counter book-keeping. Inspect debug logs to see how - * they match up. - */ -#if defined(DUK_USE_INTERRUPT_COUNTER) && defined(DUK_USE_DEBUG) - duk_int_t inst_count_exec; - duk_int_t inst_count_interrupt; -#endif - - /* Debugger state. */ -#if defined(DUK_USE_DEBUGGER_SUPPORT) - /* Callbacks and udata; dbg_read_cb != NULL is used to indicate attached state. */ - duk_debug_read_function dbg_read_cb; /* required, NULL implies detached */ - duk_debug_write_function dbg_write_cb; /* required */ - duk_debug_peek_function dbg_peek_cb; - duk_debug_read_flush_function dbg_read_flush_cb; - duk_debug_write_flush_function dbg_write_flush_cb; - duk_debug_request_function dbg_request_cb; - duk_debug_detached_function dbg_detached_cb; - void *dbg_udata; - - /* The following are only relevant when debugger is attached. */ - duk_bool_t dbg_processing; /* currently processing messages or breakpoints: don't enter message processing recursively (e.g. - no breakpoints when processing debugger eval) */ - duk_bool_t dbg_state_dirty; /* resend state next time executor is about to run */ - duk_bool_t - dbg_force_restart; /* force executor restart to recheck breakpoints; used to handle function returns (see GH-303) */ - duk_bool_t dbg_detaching; /* debugger detaching; used to avoid calling detach handler recursively */ - duk_small_uint_t dbg_pause_flags; /* flags for automatic pause behavior */ - duk_activation *dbg_pause_act; /* activation related to pause behavior (pause on line change, function entry/exit) */ - duk_uint32_t dbg_pause_startline; /* starting line number for line change related pause behavior */ - duk_breakpoint dbg_breakpoints[DUK_HEAP_MAX_BREAKPOINTS]; /* breakpoints: [0,breakpoint_count[ gc reachable */ - duk_small_uint_t dbg_breakpoint_count; - duk_breakpoint - *dbg_breakpoints_active[DUK_HEAP_MAX_BREAKPOINTS + 1]; /* currently active breakpoints: NULL term, borrowed pointers */ - /* XXX: make active breakpoints actual copies instead of pointers? */ - - /* These are for rate limiting Status notifications and transport peeking. */ - duk_uint_t dbg_exec_counter; /* cumulative opcode execution count (overflows are OK) */ - duk_uint_t dbg_last_counter; /* value of dbg_exec_counter when we last did a Date-based check */ - duk_double_t dbg_last_time; /* time when status/peek was last done (Date-based rate limit) */ - - /* Used to support single-byte stream lookahead. */ - duk_bool_t dbg_have_next_byte; - duk_uint8_t dbg_next_byte; -#endif /* DUK_USE_DEBUGGER_SUPPORT */ -#if defined(DUK_USE_ASSERTIONS) - duk_bool_t dbg_calling_transport; /* transport call in progress, calling into Duktape forbidden */ -#endif - - /* String intern table (weak refs). */ -#if defined(DUK_USE_STRTAB_PTRCOMP) - duk_uint16_t *strtable16; -#else - duk_hstring **strtable; -#endif - duk_uint32_t st_mask; /* mask for lookup, st_size - 1 */ - duk_uint32_t st_size; /* stringtable size */ -#if (DUK_USE_STRTAB_MINSIZE != DUK_USE_STRTAB_MAXSIZE) - duk_uint32_t st_count; /* string count for resize load factor checks */ -#endif - duk_bool_t st_resizing; /* string table is being resized; avoid recursive resize */ - - /* String access cache (codepoint offset -> byte offset) for fast string - * character looping; 'weak' reference which needs special handling in GC. - */ - duk_strcache_entry strcache[DUK_HEAP_STRCACHE_SIZE]; - -#if defined(DUK_USE_LITCACHE_SIZE) - /* Literal intern cache. When enabled, strings interned as literals - * (e.g. duk_push_literal()) will be pinned and cached for the lifetime - * of the heap. - */ - duk_litcache_entry litcache[DUK_USE_LITCACHE_SIZE]; -#endif - - /* Built-in strings. */ -#if defined(DUK_USE_ROM_STRINGS) - /* No field needed when strings are in ROM. */ -#else -#if defined(DUK_USE_HEAPPTR16) - duk_uint16_t strs16[DUK_HEAP_NUM_STRINGS]; -#else - duk_hstring *strs[DUK_HEAP_NUM_STRINGS]; -#endif -#endif - - /* Stats. */ -#if defined(DUK_USE_DEBUG) - duk_int_t stats_exec_opcodes; - duk_int_t stats_exec_interrupt; - duk_int_t stats_exec_throw; - duk_int_t stats_call_all; - duk_int_t stats_call_tailcall; - duk_int_t stats_call_ecmatoecma; - duk_int_t stats_safecall_all; - duk_int_t stats_safecall_nothrow; - duk_int_t stats_safecall_throw; - duk_int_t stats_ms_try_count; - duk_int_t stats_ms_skip_count; - duk_int_t stats_ms_emergency_count; - duk_int_t stats_strtab_intern_hit; - duk_int_t stats_strtab_intern_miss; - duk_int_t stats_strtab_resize_check; - duk_int_t stats_strtab_resize_grow; - duk_int_t stats_strtab_resize_shrink; - duk_int_t stats_strtab_litcache_hit; - duk_int_t stats_strtab_litcache_miss; - duk_int_t stats_strtab_litcache_pin; - duk_int_t stats_object_realloc_props; - duk_int_t stats_object_abandon_array; - duk_int_t stats_getownpropdesc_count; - duk_int_t stats_getownpropdesc_hit; - duk_int_t stats_getownpropdesc_miss; - duk_int_t stats_getpropdesc_count; - duk_int_t stats_getpropdesc_hit; - duk_int_t stats_getpropdesc_miss; - duk_int_t stats_getprop_all; - duk_int_t stats_getprop_arrayidx; - duk_int_t stats_getprop_bufobjidx; - duk_int_t stats_getprop_bufferidx; - duk_int_t stats_getprop_bufferlen; - duk_int_t stats_getprop_stringidx; - duk_int_t stats_getprop_stringlen; - duk_int_t stats_getprop_proxy; - duk_int_t stats_getprop_arguments; - duk_int_t stats_putprop_all; - duk_int_t stats_putprop_arrayidx; - duk_int_t stats_putprop_bufobjidx; - duk_int_t stats_putprop_bufferidx; - duk_int_t stats_putprop_proxy; - duk_int_t stats_getvar_all; - duk_int_t stats_putvar_all; - duk_int_t stats_envrec_delayedcreate; - duk_int_t stats_envrec_create; - duk_int_t stats_envrec_newenv; - duk_int_t stats_envrec_oldenv; - duk_int_t stats_envrec_pushclosure; -#endif -}; - -/* - * Prototypes - */ - -DUK_INTERNAL_DECL -duk_heap *duk_heap_alloc(duk_alloc_function alloc_func, - duk_realloc_function realloc_func, - duk_free_function free_func, - void *heap_udata, - duk_fatal_function fatal_func); -DUK_INTERNAL_DECL void duk_heap_free(duk_heap *heap); -DUK_INTERNAL_DECL void duk_free_hobject(duk_heap *heap, duk_hobject *h); -DUK_INTERNAL_DECL void duk_free_hbuffer(duk_heap *heap, duk_hbuffer *h); -DUK_INTERNAL_DECL void duk_free_hstring(duk_heap *heap, duk_hstring *h); -DUK_INTERNAL_DECL void duk_heap_free_heaphdr_raw(duk_heap *heap, duk_heaphdr *hdr); - -DUK_INTERNAL_DECL void duk_heap_insert_into_heap_allocated(duk_heap *heap, duk_heaphdr *hdr); -#if defined(DUK_USE_REFERENCE_COUNTING) -DUK_INTERNAL_DECL void duk_heap_remove_from_heap_allocated(duk_heap *heap, duk_heaphdr *hdr); -#endif -#if defined(DUK_USE_FINALIZER_SUPPORT) -DUK_INTERNAL_DECL void duk_heap_insert_into_finalize_list(duk_heap *heap, duk_heaphdr *hdr); -DUK_INTERNAL_DECL void duk_heap_remove_from_finalize_list(duk_heap *heap, duk_heaphdr *hdr); -#endif -#if defined(DUK_USE_ASSERTIONS) -DUK_INTERNAL_DECL duk_bool_t duk_heap_in_heap_allocated(duk_heap *heap, duk_heaphdr *ptr); -#endif -#if defined(DUK_USE_INTERRUPT_COUNTER) -DUK_INTERNAL_DECL void duk_heap_switch_thread(duk_heap *heap, duk_hthread *new_thr); -#endif - -DUK_INTERNAL_DECL duk_hstring *duk_heap_strtable_intern(duk_heap *heap, const duk_uint8_t *str, duk_uint32_t blen); -DUK_INTERNAL_DECL duk_hstring *duk_heap_strtable_intern_checked(duk_hthread *thr, const duk_uint8_t *str, duk_uint32_t len); -#if defined(DUK_USE_LITCACHE_SIZE) -DUK_INTERNAL_DECL duk_hstring *duk_heap_strtable_intern_literal_checked(duk_hthread *thr, - const duk_uint8_t *str, - duk_uint32_t blen); -#endif -DUK_INTERNAL_DECL duk_hstring *duk_heap_strtable_intern_u32(duk_heap *heap, duk_uint32_t val); -DUK_INTERNAL_DECL duk_hstring *duk_heap_strtable_intern_u32_checked(duk_hthread *thr, duk_uint32_t val); -#if defined(DUK_USE_REFERENCE_COUNTING) -DUK_INTERNAL_DECL void duk_heap_strtable_unlink(duk_heap *heap, duk_hstring *h); -#endif -DUK_INTERNAL_DECL void duk_heap_strtable_unlink_prev(duk_heap *heap, duk_hstring *h, duk_hstring *prev); -DUK_INTERNAL_DECL void duk_heap_strtable_force_resize(duk_heap *heap); -DUK_INTERNAL void duk_heap_strtable_free(duk_heap *heap); -#if defined(DUK_USE_DEBUG) -DUK_INTERNAL void duk_heap_strtable_dump(duk_heap *heap); -#endif - -DUK_INTERNAL_DECL void duk_heap_strcache_string_remove(duk_heap *heap, duk_hstring *h); -DUK_INTERNAL_DECL duk_uint_fast32_t duk_heap_strcache_offset_char2byte(duk_hthread *thr, - duk_hstring *h, - duk_uint_fast32_t char_offset); - -#if defined(DUK_USE_PROVIDE_DEFAULT_ALLOC_FUNCTIONS) -DUK_INTERNAL_DECL void *duk_default_alloc_function(void *udata, duk_size_t size); -DUK_INTERNAL_DECL void *duk_default_realloc_function(void *udata, void *ptr, duk_size_t newsize); -DUK_INTERNAL_DECL void duk_default_free_function(void *udata, void *ptr); -#endif - -DUK_INTERNAL_DECL void *duk_heap_mem_alloc(duk_heap *heap, duk_size_t size); -DUK_INTERNAL_DECL void *duk_heap_mem_alloc_zeroed(duk_heap *heap, duk_size_t size); -DUK_INTERNAL_DECL void *duk_heap_mem_alloc_checked(duk_hthread *thr, duk_size_t size); -DUK_INTERNAL_DECL void *duk_heap_mem_alloc_checked_zeroed(duk_hthread *thr, duk_size_t size); -DUK_INTERNAL_DECL void *duk_heap_mem_realloc(duk_heap *heap, void *ptr, duk_size_t newsize); -DUK_INTERNAL_DECL void *duk_heap_mem_realloc_indirect(duk_heap *heap, duk_mem_getptr cb, void *ud, duk_size_t newsize); -DUK_INTERNAL_DECL void duk_heap_mem_free(duk_heap *heap, void *ptr); - -DUK_INTERNAL_DECL void duk_heap_free_freelists(duk_heap *heap); - -#if defined(DUK_USE_FINALIZER_SUPPORT) -DUK_INTERNAL_DECL void duk_heap_run_finalizer(duk_heap *heap, duk_hobject *obj); -DUK_INTERNAL_DECL void duk_heap_process_finalize_list(duk_heap *heap); -#endif /* DUK_USE_FINALIZER_SUPPORT */ - -DUK_INTERNAL_DECL void duk_heap_mark_and_sweep(duk_heap *heap, duk_small_uint_t flags); - -DUK_INTERNAL_DECL duk_uint32_t duk_heap_hashstring(duk_heap *heap, const duk_uint8_t *str, duk_size_t len); - -#endif /* DUK_HEAP_H_INCLUDED */ -/* #include duk_debugger.h */ -#line 1 "duk_debugger.h" -#if !defined(DUK_DEBUGGER_H_INCLUDED) -#define DUK_DEBUGGER_H_INCLUDED - -/* Debugger protocol version is defined in the public API header. */ - -/* Initial bytes for markers. */ -#define DUK_DBG_IB_EOM 0x00 -#define DUK_DBG_IB_REQUEST 0x01 -#define DUK_DBG_IB_REPLY 0x02 -#define DUK_DBG_IB_ERROR 0x03 -#define DUK_DBG_IB_NOTIFY 0x04 - -/* Other initial bytes. */ -#define DUK_DBG_IB_INT4 0x10 -#define DUK_DBG_IB_STR4 0x11 -#define DUK_DBG_IB_STR2 0x12 -#define DUK_DBG_IB_BUF4 0x13 -#define DUK_DBG_IB_BUF2 0x14 -#define DUK_DBG_IB_UNUSED 0x15 -#define DUK_DBG_IB_UNDEFINED 0x16 -#define DUK_DBG_IB_NULL 0x17 -#define DUK_DBG_IB_TRUE 0x18 -#define DUK_DBG_IB_FALSE 0x19 -#define DUK_DBG_IB_NUMBER 0x1a -#define DUK_DBG_IB_OBJECT 0x1b -#define DUK_DBG_IB_POINTER 0x1c -#define DUK_DBG_IB_LIGHTFUNC 0x1d -#define DUK_DBG_IB_HEAPPTR 0x1e -/* The short string/integer initial bytes starting from 0x60 don't have - * defines now. - */ - -/* Error codes. */ -#define DUK_DBG_ERR_UNKNOWN 0x00 -#define DUK_DBG_ERR_UNSUPPORTED 0x01 -#define DUK_DBG_ERR_TOOMANY 0x02 -#define DUK_DBG_ERR_NOTFOUND 0x03 -#define DUK_DBG_ERR_APPLICATION 0x04 - -/* Commands and notifys initiated by Duktape. */ -#define DUK_DBG_CMD_STATUS 0x01 -#define DUK_DBG_CMD_UNUSED_2 0x02 /* Duktape 1.x: print notify */ -#define DUK_DBG_CMD_UNUSED_3 0x03 /* Duktape 1.x: alert notify */ -#define DUK_DBG_CMD_UNUSED_4 0x04 /* Duktape 1.x: log notify */ -#define DUK_DBG_CMD_THROW 0x05 -#define DUK_DBG_CMD_DETACHING 0x06 -#define DUK_DBG_CMD_APPNOTIFY 0x07 - -/* Commands initiated by debug client. */ -#define DUK_DBG_CMD_BASICINFO 0x10 -#define DUK_DBG_CMD_TRIGGERSTATUS 0x11 -#define DUK_DBG_CMD_PAUSE 0x12 -#define DUK_DBG_CMD_RESUME 0x13 -#define DUK_DBG_CMD_STEPINTO 0x14 -#define DUK_DBG_CMD_STEPOVER 0x15 -#define DUK_DBG_CMD_STEPOUT 0x16 -#define DUK_DBG_CMD_LISTBREAK 0x17 -#define DUK_DBG_CMD_ADDBREAK 0x18 -#define DUK_DBG_CMD_DELBREAK 0x19 -#define DUK_DBG_CMD_GETVAR 0x1a -#define DUK_DBG_CMD_PUTVAR 0x1b -#define DUK_DBG_CMD_GETCALLSTACK 0x1c -#define DUK_DBG_CMD_GETLOCALS 0x1d -#define DUK_DBG_CMD_EVAL 0x1e -#define DUK_DBG_CMD_DETACH 0x1f -#define DUK_DBG_CMD_DUMPHEAP 0x20 -#define DUK_DBG_CMD_GETBYTECODE 0x21 -#define DUK_DBG_CMD_APPREQUEST 0x22 -#define DUK_DBG_CMD_GETHEAPOBJINFO 0x23 -#define DUK_DBG_CMD_GETOBJPROPDESC 0x24 -#define DUK_DBG_CMD_GETOBJPROPDESCRANGE 0x25 - -/* The low 8 bits map directly to duk_hobject.h DUK_PROPDESC_FLAG_xxx. - * The remaining flags are specific to the debugger. - */ -#define DUK_DBG_PROPFLAG_SYMBOL (1U << 8) -#define DUK_DBG_PROPFLAG_HIDDEN (1U << 9) - -#if defined(DUK_USE_DEBUGGER_SUPPORT) -DUK_INTERNAL_DECL void duk_debug_do_detach(duk_heap *heap); - -DUK_INTERNAL_DECL duk_bool_t duk_debug_read_peek(duk_hthread *thr); -DUK_INTERNAL_DECL void duk_debug_write_flush(duk_hthread *thr); - -DUK_INTERNAL_DECL void duk_debug_skip_bytes(duk_hthread *thr, duk_size_t length); -DUK_INTERNAL_DECL void duk_debug_skip_byte(duk_hthread *thr); - -DUK_INTERNAL_DECL void duk_debug_read_bytes(duk_hthread *thr, duk_uint8_t *data, duk_size_t length); -DUK_INTERNAL_DECL duk_uint8_t duk_debug_read_byte(duk_hthread *thr); -DUK_INTERNAL_DECL duk_int32_t duk_debug_read_int(duk_hthread *thr); -DUK_INTERNAL_DECL duk_hstring *duk_debug_read_hstring(duk_hthread *thr); -/* XXX: exposed duk_debug_read_pointer */ -/* XXX: exposed duk_debug_read_buffer */ -/* XXX: exposed duk_debug_read_hbuffer */ -#if 0 -DUK_INTERNAL_DECL duk_heaphdr *duk_debug_read_heapptr(duk_hthread *thr); -#endif -#if defined(DUK_USE_DEBUGGER_INSPECT) -DUK_INTERNAL_DECL duk_heaphdr *duk_debug_read_any_ptr(duk_hthread *thr); -#endif -DUK_INTERNAL_DECL duk_tval *duk_debug_read_tval(duk_hthread *thr); - -DUK_INTERNAL_DECL void duk_debug_write_bytes(duk_hthread *thr, const duk_uint8_t *data, duk_size_t length); -DUK_INTERNAL_DECL void duk_debug_write_byte(duk_hthread *thr, duk_uint8_t x); -DUK_INTERNAL_DECL void duk_debug_write_unused(duk_hthread *thr); -DUK_INTERNAL_DECL void duk_debug_write_undefined(duk_hthread *thr); -#if defined(DUK_USE_DEBUGGER_INSPECT) -DUK_INTERNAL_DECL void duk_debug_write_null(duk_hthread *thr); -#endif -DUK_INTERNAL_DECL void duk_debug_write_boolean(duk_hthread *thr, duk_uint_t val); -DUK_INTERNAL_DECL void duk_debug_write_int(duk_hthread *thr, duk_int32_t x); -DUK_INTERNAL_DECL void duk_debug_write_uint(duk_hthread *thr, duk_uint32_t x); -DUK_INTERNAL_DECL void duk_debug_write_string(duk_hthread *thr, const char *data, duk_size_t length); -DUK_INTERNAL_DECL void duk_debug_write_cstring(duk_hthread *thr, const char *data); -DUK_INTERNAL_DECL void duk_debug_write_hstring(duk_hthread *thr, duk_hstring *h); -DUK_INTERNAL_DECL void duk_debug_write_buffer(duk_hthread *thr, const char *data, duk_size_t length); -DUK_INTERNAL_DECL void duk_debug_write_hbuffer(duk_hthread *thr, duk_hbuffer *h); -DUK_INTERNAL_DECL void duk_debug_write_pointer(duk_hthread *thr, void *ptr); -#if defined(DUK_USE_DEBUGGER_DUMPHEAP) || defined(DUK_USE_DEBUGGER_INSPECT) -DUK_INTERNAL_DECL void duk_debug_write_heapptr(duk_hthread *thr, duk_heaphdr *h); -#endif -DUK_INTERNAL_DECL void duk_debug_write_hobject(duk_hthread *thr, duk_hobject *obj); -DUK_INTERNAL_DECL void duk_debug_write_tval(duk_hthread *thr, duk_tval *tv); -#if 0 /* unused */ -DUK_INTERNAL_DECL void duk_debug_write_request(duk_hthread *thr, duk_small_uint_t command); -#endif -DUK_INTERNAL_DECL void duk_debug_write_reply(duk_hthread *thr); -DUK_INTERNAL_DECL void duk_debug_write_error_eom(duk_hthread *thr, duk_small_uint_t err_code, const char *msg); -DUK_INTERNAL_DECL void duk_debug_write_notify(duk_hthread *thr, duk_small_uint_t command); -DUK_INTERNAL_DECL void duk_debug_write_eom(duk_hthread *thr); - -DUK_INTERNAL_DECL duk_uint_fast32_t duk_debug_curr_line(duk_hthread *thr); -DUK_INTERNAL_DECL void duk_debug_send_status(duk_hthread *thr); -#if defined(DUK_USE_DEBUGGER_THROW_NOTIFY) -DUK_INTERNAL_DECL void duk_debug_send_throw(duk_hthread *thr, duk_bool_t fatal); -#endif - -DUK_INTERNAL_DECL void duk_debug_halt_execution(duk_hthread *thr, duk_bool_t use_prev_pc); -DUK_INTERNAL_DECL duk_bool_t duk_debug_process_messages(duk_hthread *thr, duk_bool_t no_block); - -DUK_INTERNAL_DECL duk_small_int_t duk_debug_add_breakpoint(duk_hthread *thr, duk_hstring *filename, duk_uint32_t line); -DUK_INTERNAL_DECL duk_bool_t duk_debug_remove_breakpoint(duk_hthread *thr, duk_small_uint_t breakpoint_index); - -DUK_INTERNAL_DECL duk_bool_t duk_debug_is_attached(duk_heap *heap); -DUK_INTERNAL_DECL duk_bool_t duk_debug_is_paused(duk_heap *heap); -DUK_INTERNAL_DECL void duk_debug_set_paused(duk_heap *heap); -DUK_INTERNAL_DECL void duk_debug_clear_paused(duk_heap *heap); -DUK_INTERNAL_DECL void duk_debug_clear_pause_state(duk_heap *heap); -#endif /* DUK_USE_DEBUGGER_SUPPORT */ - -#endif /* DUK_DEBUGGER_H_INCLUDED */ -/* #include duk_debug.h */ -#line 1 "duk_debug.h" -/* - * Debugging macros, DUK_DPRINT() and its variants in particular. - * - * DUK_DPRINT() allows formatted debug prints, and supports standard - * and Duktape specific formatters. See duk_debug_vsnprintf.c for details. - * - * DUK_D(x), DUK_DD(x), and DUK_DDD(x) are used together with log macros - * for technical reasons. They are concretely used to hide 'x' from the - * compiler when the corresponding log level is disabled. This allows - * clean builds on non-C99 compilers, at the cost of more verbose code. - * Examples: - * - * DUK_D(DUK_DPRINT("foo")); - * DUK_DD(DUK_DDPRINT("foo")); - * DUK_DDD(DUK_DDDPRINT("foo")); - * - * This approach is preferable to the old "double parentheses" hack because - * double parentheses make the C99 solution worse: __FILE__ and __LINE__ can - * no longer be added transparently without going through globals, which - * works poorly with threading. - */ - -#if !defined(DUK_DEBUG_H_INCLUDED) -#define DUK_DEBUG_H_INCLUDED - -#if defined(DUK_USE_DEBUG) - -#if defined(DUK_USE_DEBUG_LEVEL) && (DUK_USE_DEBUG_LEVEL >= 0) -#define DUK_D(x) x -#else -#define DUK_D(x) \ - do { \ - } while (0) /* omit */ -#endif - -#if defined(DUK_USE_DEBUG_LEVEL) && (DUK_USE_DEBUG_LEVEL >= 1) -#define DUK_DD(x) x -#else -#define DUK_DD(x) \ - do { \ - } while (0) /* omit */ -#endif - -#if defined(DUK_USE_DEBUG_LEVEL) && (DUK_USE_DEBUG_LEVEL >= 2) -#define DUK_DDD(x) x -#else -#define DUK_DDD(x) \ - do { \ - } while (0) /* omit */ -#endif - -/* - * Exposed debug macros: debugging enabled - */ - -#if defined(DUK_USE_VARIADIC_MACROS) - -/* Note: combining __FILE__, __LINE__, and __func__ into fmt would be - * possible compile time, but waste some space with shared function names. - */ -#define DUK__DEBUG_LOG(lev, ...) \ - duk_debug_log((duk_int_t) (lev), DUK_FILE_MACRO, (duk_int_t) DUK_LINE_MACRO, DUK_FUNC_MACRO, __VA_ARGS__); - -#if defined(DUK_USE_DEBUG_LEVEL) && (DUK_USE_DEBUG_LEVEL >= 0) -#define DUK_DPRINT(...) DUK__DEBUG_LOG(DUK_LEVEL_DEBUG, __VA_ARGS__) -#else -#define DUK_DPRINT(...) -#endif - -#if defined(DUK_USE_DEBUG_LEVEL) && (DUK_USE_DEBUG_LEVEL >= 1) -#define DUK_DDPRINT(...) DUK__DEBUG_LOG(DUK_LEVEL_DDEBUG, __VA_ARGS__) -#else -#define DUK_DDPRINT(...) -#endif - -#if defined(DUK_USE_DEBUG_LEVEL) && (DUK_USE_DEBUG_LEVEL >= 2) -#define DUK_DDDPRINT(...) DUK__DEBUG_LOG(DUK_LEVEL_DDDEBUG, __VA_ARGS__) -#else -#define DUK_DDDPRINT(...) -#endif - -#else /* DUK_USE_VARIADIC_MACROS */ - -#define DUK__DEBUG_STASH(lev) \ - (void) DUK_SNPRINTF(duk_debug_file_stash, DUK_DEBUG_STASH_SIZE, "%s", (const char *) DUK_FILE_MACRO), \ - (void) (duk_debug_file_stash[DUK_DEBUG_STASH_SIZE - 1] = (char) 0), \ - (void) (duk_debug_line_stash = (duk_int_t) DUK_LINE_MACRO), \ - (void) DUK_SNPRINTF(duk_debug_func_stash, DUK_DEBUG_STASH_SIZE, "%s", (const char *) DUK_FUNC_MACRO), \ - (void) (duk_debug_func_stash[DUK_DEBUG_STASH_SIZE - 1] = (char) 0), (void) (duk_debug_level_stash = (lev)) - -/* Without variadic macros resort to comma expression trickery to handle debug - * prints. This generates a lot of harmless warnings. These hacks are not - * needed normally because DUK_D() and friends will hide the entire debug log - * statement from the compiler. - */ - -#if defined(DUK_USE_DEBUG_LEVEL) && (DUK_USE_DEBUG_LEVEL >= 0) -#define DUK_DPRINT DUK__DEBUG_STASH(DUK_LEVEL_DEBUG), (void) duk_debug_log /* args go here in parens */ -#else -#define DUK_DPRINT 0 && /* args go here as a comma expression in parens */ -#endif - -#if defined(DUK_USE_DEBUG_LEVEL) && (DUK_USE_DEBUG_LEVEL >= 1) -#define DUK_DDPRINT DUK__DEBUG_STASH(DUK_LEVEL_DDEBUG), (void) duk_debug_log /* args go here in parens */ -#else -#define DUK_DDPRINT 0 && /* args */ -#endif - -#if defined(DUK_USE_DEBUG_LEVEL) && (DUK_USE_DEBUG_LEVEL >= 2) -#define DUK_DDDPRINT DUK__DEBUG_STASH(DUK_LEVEL_DDDEBUG), (void) duk_debug_log /* args go here in parens */ -#else -#define DUK_DDDPRINT 0 && /* args */ -#endif - -#endif /* DUK_USE_VARIADIC_MACROS */ - -#else /* DUK_USE_DEBUG */ - -/* - * Exposed debug macros: debugging disabled - */ - -#define DUK_D(x) \ - do { \ - } while (0) /* omit */ -#define DUK_DD(x) \ - do { \ - } while (0) /* omit */ -#define DUK_DDD(x) \ - do { \ - } while (0) /* omit */ - -#if defined(DUK_USE_VARIADIC_MACROS) - -#define DUK_DPRINT(...) -#define DUK_DDPRINT(...) -#define DUK_DDDPRINT(...) - -#else /* DUK_USE_VARIADIC_MACROS */ - -#define DUK_DPRINT 0 && /* args go here as a comma expression in parens */ -#define DUK_DDPRINT 0 && /* args */ -#define DUK_DDDPRINT 0 && /* args */ - -#endif /* DUK_USE_VARIADIC_MACROS */ - -#endif /* DUK_USE_DEBUG */ - -/* - * Structs - */ - -#if defined(DUK_USE_DEBUG) -struct duk_fixedbuffer { - duk_uint8_t *buffer; - duk_size_t length; - duk_size_t offset; - duk_bool_t truncated; -}; -#endif - -/* - * Prototypes - */ - -#if defined(DUK_USE_DEBUG) -DUK_INTERNAL_DECL duk_int_t duk_debug_vsnprintf(char *str, duk_size_t size, const char *format, va_list ap); -#if 0 /*unused*/ -DUK_INTERNAL_DECL duk_int_t duk_debug_snprintf(char *str, duk_size_t size, const char *format, ...); -#endif -DUK_INTERNAL_DECL void duk_debug_format_funcptr(char *buf, duk_size_t buf_size, duk_uint8_t *fptr, duk_size_t fptr_size); - -#if defined(DUK_USE_VARIADIC_MACROS) -DUK_INTERNAL_DECL void duk_debug_log(duk_int_t level, const char *file, duk_int_t line, const char *func, const char *fmt, ...); -#else /* DUK_USE_VARIADIC_MACROS */ -/* parameter passing, not thread safe */ -#define DUK_DEBUG_STASH_SIZE 128 -#if !defined(DUK_SINGLE_FILE) -DUK_INTERNAL_DECL char duk_debug_file_stash[DUK_DEBUG_STASH_SIZE]; -DUK_INTERNAL_DECL duk_int_t duk_debug_line_stash; -DUK_INTERNAL_DECL char duk_debug_func_stash[DUK_DEBUG_STASH_SIZE]; -DUK_INTERNAL_DECL duk_int_t duk_debug_level_stash; -#endif -DUK_INTERNAL_DECL void duk_debug_log(const char *fmt, ...); -#endif /* DUK_USE_VARIADIC_MACROS */ - -DUK_INTERNAL_DECL void duk_fb_put_bytes(duk_fixedbuffer *fb, const duk_uint8_t *buffer, duk_size_t length); -DUK_INTERNAL_DECL void duk_fb_put_byte(duk_fixedbuffer *fb, duk_uint8_t x); -DUK_INTERNAL_DECL void duk_fb_put_cstring(duk_fixedbuffer *fb, const char *x); -DUK_INTERNAL_DECL void duk_fb_sprintf(duk_fixedbuffer *fb, const char *fmt, ...); -DUK_INTERNAL_DECL void duk_fb_put_funcptr(duk_fixedbuffer *fb, duk_uint8_t *fptr, duk_size_t fptr_size); -DUK_INTERNAL_DECL duk_bool_t duk_fb_is_full(duk_fixedbuffer *fb); - -#endif /* DUK_USE_DEBUG */ - -#endif /* DUK_DEBUG_H_INCLUDED */ -/* #include duk_error.h */ -#line 1 "duk_error.h" -/* - * Error handling macros, assertion macro, error codes. - * - * There are three types of 'errors': - * - * 1. Ordinary errors relative to a thread, cause a longjmp, catchable. - * 2. Fatal errors relative to a heap, cause fatal handler to be called. - * 3. Fatal errors without context, cause the default (not heap specific) - * fatal handler to be called. - * - * Fatal errors without context are used by debug code such as assertions. - * By providing a fatal error handler for a Duktape heap, user code can - * avoid fatal errors without context in non-debug builds. - */ - -#if !defined(DUK_ERROR_H_INCLUDED) -#define DUK_ERROR_H_INCLUDED - -/* - * Error codes: defined in duktape.h - * - * Error codes are used as a shorthand to throw exceptions from inside - * the implementation. The appropriate ECMAScript object is constructed - * based on the code. ECMAScript code throws objects directly. The error - * codes are defined in the public API header because they are also used - * by calling code. - */ - -/* - * Normal error - * - * Normal error is thrown with a longjmp() through the current setjmp() - * catchpoint record in the duk_heap. The 'curr_thread' of the duk_heap - * identifies the throwing thread. - * - * Error formatting is usually unnecessary. The error macros provide a - * zero argument version (no formatting) and separate macros for small - * argument counts. Variadic macros are not used to avoid portability - * issues and avoid the need for stash-based workarounds when they're not - * available. Vararg calls are avoided for non-formatted error calls - * because vararg call sites are larger than normal, and there are a lot - * of call sites with no formatting. - * - * Note that special formatting provided by debug macros is NOT available. - * - * The _RAW variants allow the caller to specify file and line. This makes - * it easier to write checked calls which want to use the call site of the - * checked function, not the error macro call inside the checked function. - */ - -#if defined(DUK_USE_VERBOSE_ERRORS) - -/* Because there are quite many call sites, pack error code (require at most - * 8-bit) into a single argument. - */ -#define DUK_ERROR(thr, err, msg) \ - do { \ - duk_errcode_t duk__err = (err); \ - duk_int_t duk__line = (duk_int_t) DUK_LINE_MACRO; \ - DUK_ASSERT(duk__err >= 0 && duk__err <= 0xff); \ - DUK_ASSERT(duk__line >= 0 && duk__line <= 0x00ffffffL); \ - duk_err_handle_error((thr), DUK_FILE_MACRO, (((duk_uint_t) duk__err) << 24) | ((duk_uint_t) duk__line), (msg)); \ - } while (0) -#define DUK_ERROR_RAW(thr, file, line, err, msg) \ - do { \ - duk_errcode_t duk__err = (err); \ - duk_int_t duk__line = (duk_int_t) (line); \ - DUK_ASSERT(duk__err >= 0 && duk__err <= 0xff); \ - DUK_ASSERT(duk__line >= 0 && duk__line <= 0x00ffffffL); \ - duk_err_handle_error((thr), (file), (((duk_uint_t) duk__err) << 24) | ((duk_uint_t) duk__line), (msg)); \ - } while (0) - -#define DUK_ERROR_FMT1(thr, err, fmt, arg1) \ - do { \ - duk_errcode_t duk__err = (err); \ - duk_int_t duk__line = (duk_int_t) DUK_LINE_MACRO; \ - DUK_ASSERT(duk__err >= 0 && duk__err <= 0xff); \ - DUK_ASSERT(duk__line >= 0 && duk__line <= 0x00ffffffL); \ - duk_err_handle_error_fmt((thr), \ - DUK_FILE_MACRO, \ - (((duk_uint_t) duk__err) << 24) | ((duk_uint_t) duk__line), \ - (fmt), \ - (arg1)); \ - } while (0) -#define DUK_ERROR_RAW_FMT1(thr, file, line, err, fmt, arg1) \ - do { \ - duk_errcode_t duk__err = (err); \ - duk_int_t duk__line = (duk_int_t) (line); \ - DUK_ASSERT(duk__err >= 0 && duk__err <= 0xff); \ - DUK_ASSERT(duk__line >= 0 && duk__line <= 0x00ffffffL); \ - duk_err_handle_error_fmt((thr), \ - (file), \ - (((duk_uint_t) duk__err) << 24) | ((duk_uint_t) duk__line), \ - (fmt), \ - (arg1)); \ - } while (0) - -#define DUK_ERROR_FMT2(thr, err, fmt, arg1, arg2) \ - do { \ - duk_errcode_t duk__err = (err); \ - duk_int_t duk__line = (duk_int_t) DUK_LINE_MACRO; \ - DUK_ASSERT(duk__err >= 0 && duk__err <= 0xff); \ - DUK_ASSERT(duk__line >= 0 && duk__line <= 0x00ffffffL); \ - duk_err_handle_error_fmt((thr), \ - DUK_FILE_MACRO, \ - (((duk_uint_t) duk__err) << 24) | ((duk_uint_t) duk__line), \ - (fmt), \ - (arg1), \ - (arg2)); \ - } while (0) -#define DUK_ERROR_RAW_FMT2(thr, file, line, err, fmt, arg1, arg2) \ - do { \ - duk_errcode_t duk__err = (err); \ - duk_int_t duk__line = (duk_int_t) (line); \ - DUK_ASSERT(duk__err >= 0 && duk__err <= 0xff); \ - DUK_ASSERT(duk__line >= 0 && duk__line <= 0x00ffffffL); \ - duk_err_handle_error_fmt((thr), \ - (file), \ - (((duk_uint_t) duk__err) << 24) | ((duk_uint_t) duk__line), \ - (fmt), \ - (arg1), \ - (arg2)); \ - } while (0) - -#define DUK_ERROR_FMT3(thr, err, fmt, arg1, arg2, arg3) \ - do { \ - duk_errcode_t duk__err = (err); \ - duk_int_t duk__line = (duk_int_t) DUK_LINE_MACRO; \ - DUK_ASSERT(duk__err >= 0 && duk__err <= 0xff); \ - DUK_ASSERT(duk__line >= 0 && duk__line <= 0x00ffffffL); \ - duk_err_handle_error_fmt((thr), \ - DUK_FILE_MACRO, \ - (((duk_uint_t) duk__err) << 24) | ((duk_uint_t) duk__line), \ - (fmt), \ - (arg1), \ - (arg2), \ - (arg3)); \ - } while (0) -#define DUK_ERROR_RAW_FMT3(thr, file, line, err, fmt, arg1, arg2, arg3) \ - do { \ - duk_errcode_t duk__err = (err); \ - duk_int_t duk__line = (duk_int_t) (line); \ - DUK_ASSERT(duk__err >= 0 && duk__err <= 0xff); \ - DUK_ASSERT(duk__line >= 0 && duk__line <= 0x00ffffffL); \ - duk_err_handle_error_fmt((thr), \ - (file), \ - (((duk_uint_t) duk__err) << 24) | ((duk_uint_t) duk__line), \ - (fmt), \ - (arg1), \ - (arg2), \ - (arg3)); \ - } while (0) - -#define DUK_ERROR_FMT4(thr, err, fmt, arg1, arg2, arg3, arg4) \ - do { \ - duk_errcode_t duk__err = (err); \ - duk_int_t duk__line = (duk_int_t) DUK_LINE_MACRO; \ - DUK_ASSERT(duk__err >= 0 && duk__err <= 0xff); \ - DUK_ASSERT(duk__line >= 0 && duk__line <= 0x00ffffffL); \ - duk_err_handle_error_fmt((thr), \ - DUK_FILE_MACRO, \ - (((duk_uint_t) duk__err) << 24) | ((duk_uint_t) duk__line), \ - (fmt), \ - (arg1), \ - (arg2), \ - (arg3), \ - (arg4)); \ - } while (0) -#define DUK_ERROR_RAW_FMT4(thr, file, line, err, fmt, arg1, arg2, arg3, arg4) \ - do { \ - duk_errcode_t duk__err = (err); \ - duk_int_t duk__line = (duk_int_t) (line); \ - DUK_ASSERT(duk__err >= 0 && duk__err <= 0xff); \ - DUK_ASSERT(duk__line >= 0 && duk__line <= 0x00ffffffL); \ - duk_err_handle_error_fmt((thr), \ - (file), \ - (((duk_uint_t) duk__err) << 24) | ((duk_uint_t) duk__line), \ - (fmt), \ - (arg1), \ - (arg2), \ - (arg3), \ - (arg4)); \ - } while (0) - -#else /* DUK_USE_VERBOSE_ERRORS */ - -#define DUK_ERROR(thr, err, msg) duk_err_handle_error((thr), (err)) -#define DUK_ERROR_RAW(thr, file, line, err, msg) duk_err_handle_error((thr), (err)) - -#define DUK_ERROR_FMT1(thr, err, fmt, arg1) DUK_ERROR((thr), (err), (fmt)) -#define DUK_ERROR_RAW_FMT1(thr, file, line, err, fmt, arg1) DUK_ERROR_RAW((thr), (file), (line), (err), (fmt)) - -#define DUK_ERROR_FMT2(thr, err, fmt, arg1, arg2) DUK_ERROR((thr), (err), (fmt)) -#define DUK_ERROR_RAW_FMT2(thr, file, line, err, fmt, arg1, arg2) DUK_ERROR_RAW((thr), (file), (line), (err), (fmt)) - -#define DUK_ERROR_FMT3(thr, err, fmt, arg1, arg2, arg3) DUK_ERROR((thr), (err), (fmt)) -#define DUK_ERROR_RAW_FMT3(thr, file, line, err, fmt, arg1, arg2, arg3) DUK_ERROR_RAW((thr), (file), (line), (err), (fmt)) - -#define DUK_ERROR_FMT4(thr, err, fmt, arg1, arg2, arg3, arg4) DUK_ERROR((thr), (err), (fmt)) -#define DUK_ERROR_RAW_FMT4(thr, file, line, err, fmt, arg1, arg2, arg3, arg4) DUK_ERROR_RAW((thr), (file), (line), (err), (fmt)) - -#endif /* DUK_USE_VERBOSE_ERRORS */ - -/* - * Fatal error without context - * - * The macro is an expression to make it compatible with DUK_ASSERT_EXPR(). - */ - -#define DUK_FATAL_WITHOUT_CONTEXT(msg) duk_default_fatal_handler(NULL, (msg)) - -/* - * Error throwing helpers - * - * The goal is to provide verbose and configurable error messages. Call - * sites should be clean in source code and compile to a small footprint. - * Small footprint is also useful for performance because small cold paths - * reduce code cache pressure. Adding macros here only makes sense if there - * are enough call sites to get concrete benefits. - * - * DUK_ERROR_xxx() macros are generic and can be used anywhere. - * - * DUK_DCERROR_xxx() macros can only be used in Duktape/C functions where - * the "return DUK_RET_xxx;" shorthand is available for low memory targets. - * The DUK_DCERROR_xxx() macros always either throw or perform a - * 'return DUK_RET_xxx' from the calling function. - */ - -#if defined(DUK_USE_VERBOSE_ERRORS) -/* Verbose errors with key/value summaries (non-paranoid) or without key/value - * summaries (paranoid, for some security sensitive environments), the paranoid - * vs. non-paranoid distinction affects only a few specific errors. - */ -#if defined(DUK_USE_PARANOID_ERRORS) -#define DUK_ERROR_REQUIRE_TYPE_INDEX(thr, idx, expectname, lowmemstr) \ - do { \ - duk_err_require_type_index((thr), DUK_FILE_MACRO, (duk_int_t) DUK_LINE_MACRO, (idx), (expectname)); \ - } while (0) -#else /* DUK_USE_PARANOID_ERRORS */ -#define DUK_ERROR_REQUIRE_TYPE_INDEX(thr, idx, expectname, lowmemstr) \ - do { \ - duk_err_require_type_index((thr), DUK_FILE_MACRO, (duk_int_t) DUK_LINE_MACRO, (idx), (expectname)); \ - } while (0) -#endif /* DUK_USE_PARANOID_ERRORS */ - -#define DUK_ERROR_INTERNAL(thr) \ - do { \ - duk_err_error_internal((thr), DUK_FILE_MACRO, (duk_int_t) DUK_LINE_MACRO); \ - } while (0) -#define DUK_DCERROR_INTERNAL(thr) \ - do { \ - DUK_ERROR_INTERNAL((thr)); \ - return 0; \ - } while (0) -#define DUK_ERROR_ALLOC_FAILED(thr) \ - do { \ - duk_err_error_alloc_failed((thr), DUK_FILE_MACRO, (duk_int_t) DUK_LINE_MACRO); \ - } while (0) -#define DUK_ERROR_UNSUPPORTED(thr) \ - do { \ - DUK_ERROR((thr), DUK_ERR_ERROR, DUK_STR_UNSUPPORTED); \ - } while (0) -#define DUK_DCERROR_UNSUPPORTED(thr) \ - do { \ - DUK_ERROR_UNSUPPORTED((thr)); \ - return 0; \ - } while (0) -#define DUK_ERROR_ERROR(thr, msg) \ - do { \ - duk_err_error((thr), DUK_FILE_MACRO, (duk_int_t) DUK_LINE_MACRO, (msg)); \ - } while (0) -#define DUK_ERROR_RANGE_INDEX(thr, idx) \ - do { \ - duk_err_range_index((thr), DUK_FILE_MACRO, (duk_int_t) DUK_LINE_MACRO, (idx)); \ - } while (0) -#define DUK_ERROR_RANGE_PUSH_BEYOND(thr) \ - do { \ - duk_err_range_push_beyond((thr), DUK_FILE_MACRO, (duk_int_t) DUK_LINE_MACRO); \ - } while (0) -#define DUK_ERROR_RANGE_INVALID_ARGS(thr) \ - do { \ - DUK_ERROR_RANGE((thr), DUK_STR_INVALID_ARGS); \ - } while (0) -#define DUK_DCERROR_RANGE_INVALID_ARGS(thr) \ - do { \ - DUK_ERROR_RANGE_INVALID_ARGS((thr)); \ - return 0; \ - } while (0) -#define DUK_ERROR_RANGE_INVALID_COUNT(thr) \ - do { \ - DUK_ERROR_RANGE((thr), DUK_STR_INVALID_COUNT); \ - } while (0) -#define DUK_DCERROR_RANGE_INVALID_COUNT(thr) \ - do { \ - DUK_ERROR_RANGE_INVALID_COUNT((thr)); \ - return 0; \ - } while (0) -#define DUK_ERROR_RANGE_INVALID_LENGTH(thr) \ - do { \ - DUK_ERROR_RANGE((thr), DUK_STR_INVALID_LENGTH); \ - } while (0) -#define DUK_DCERROR_RANGE_INVALID_LENGTH(thr) \ - do { \ - DUK_ERROR_RANGE_INVALID_LENGTH((thr)); \ - return 0; \ - } while (0) -#define DUK_ERROR_RANGE(thr, msg) \ - do { \ - duk_err_range((thr), DUK_FILE_MACRO, (duk_int_t) DUK_LINE_MACRO, (msg)); \ - } while (0) -#define DUK_ERROR_EVAL(thr, msg) \ - do { \ - DUK_ERROR((thr), DUK_ERR_EVAL_ERROR, (msg)); \ - } while (0) -#define DUK_ERROR_REFERENCE(thr, msg) \ - do { \ - DUK_ERROR((thr), DUK_ERR_REFERENCE_ERROR, (msg)); \ - } while (0) -#define DUK_ERROR_SYNTAX(thr, msg) \ - do { \ - DUK_ERROR((thr), DUK_ERR_SYNTAX_ERROR, (msg)); \ - } while (0) -#define DUK_ERROR_TYPE_INVALID_ARGS(thr) \ - do { \ - duk_err_type_invalid_args((thr), DUK_FILE_MACRO, (duk_int_t) DUK_LINE_MACRO); \ - } while (0) -#define DUK_DCERROR_TYPE_INVALID_ARGS(thr) \ - do { \ - DUK_ERROR_TYPE_INVALID_ARGS((thr)); \ - return 0; \ - } while (0) -#define DUK_ERROR_TYPE_INVALID_STATE(thr) \ - do { \ - duk_err_type_invalid_state((thr), DUK_FILE_MACRO, (duk_int_t) DUK_LINE_MACRO); \ - } while (0) -#define DUK_DCERROR_TYPE_INVALID_STATE(thr) \ - do { \ - DUK_ERROR_TYPE_INVALID_STATE((thr)); \ - return 0; \ - } while (0) -#define DUK_ERROR_TYPE_INVALID_TRAP_RESULT(thr) \ - do { \ - duk_err_type_invalid_trap_result((thr), DUK_FILE_MACRO, (duk_int_t) DUK_LINE_MACRO); \ - } while (0) -#define DUK_DCERROR_TYPE_INVALID_TRAP_RESULT(thr) \ - do { \ - DUK_ERROR_TYPE((thr), DUK_STR_INVALID_TRAP_RESULT); \ - } while (0) -#define DUK_ERROR_TYPE(thr, msg) \ - do { \ - DUK_ERROR((thr), DUK_ERR_TYPE_ERROR, (msg)); \ - } while (0) -#define DUK_ERROR_URI(thr, msg) \ - do { \ - DUK_ERROR((thr), DUK_ERR_URI_ERROR, (msg)); \ - } while (0) -#else /* DUK_USE_VERBOSE_ERRORS */ -/* Non-verbose errors for low memory targets: no file, line, or message. */ - -#define DUK_ERROR_REQUIRE_TYPE_INDEX(thr, idx, expectname, lowmemstr) \ - do { \ - duk_err_type((thr)); \ - } while (0) - -#define DUK_ERROR_INTERNAL(thr) \ - do { \ - duk_err_error((thr)); \ - } while (0) -#define DUK_DCERROR_INTERNAL(thr) \ - do { \ - DUK_UNREF((thr)); \ - return DUK_RET_ERROR; \ - } while (0) -#define DUK_ERROR_ALLOC_FAILED(thr) \ - do { \ - duk_err_error((thr)); \ - } while (0) -#define DUK_ERROR_UNSUPPORTED(thr) \ - do { \ - duk_err_error((thr)); \ - } while (0) -#define DUK_DCERROR_UNSUPPORTED(thr) \ - do { \ - DUK_UNREF((thr)); \ - return DUK_RET_ERROR; \ - } while (0) -#define DUK_ERROR_ERROR(thr, msg) \ - do { \ - duk_err_error((thr)); \ - } while (0) -#define DUK_ERROR_RANGE_INDEX(thr, idx) \ - do { \ - duk_err_range((thr)); \ - } while (0) -#define DUK_ERROR_RANGE_PUSH_BEYOND(thr) \ - do { \ - duk_err_range((thr)); \ - } while (0) -#define DUK_ERROR_RANGE_INVALID_ARGS(thr) \ - do { \ - duk_err_range((thr)); \ - } while (0) -#define DUK_DCERROR_RANGE_INVALID_ARGS(thr) \ - do { \ - DUK_UNREF((thr)); \ - return DUK_RET_RANGE_ERROR; \ - } while (0) -#define DUK_ERROR_RANGE_INVALID_COUNT(thr) \ - do { \ - duk_err_range((thr)); \ - } while (0) -#define DUK_DCERROR_RANGE_INVALID_COUNT(thr) \ - do { \ - DUK_UNREF((thr)); \ - return DUK_RET_RANGE_ERROR; \ - } while (0) -#define DUK_ERROR_RANGE_INVALID_LENGTH(thr) \ - do { \ - duk_err_range((thr)); \ - } while (0) -#define DUK_DCERROR_RANGE_INVALID_LENGTH(thr) \ - do { \ - DUK_UNREF((thr)); \ - return DUK_RET_RANGE_ERROR; \ - } while (0) -#define DUK_ERROR_RANGE(thr, msg) \ - do { \ - duk_err_range((thr)); \ - } while (0) -#define DUK_ERROR_EVAL(thr, msg) \ - do { \ - duk_err_eval((thr)); \ - } while (0) -#define DUK_ERROR_REFERENCE(thr, msg) \ - do { \ - duk_err_reference((thr)); \ - } while (0) -#define DUK_ERROR_SYNTAX(thr, msg) \ - do { \ - duk_err_syntax((thr)); \ - } while (0) -#define DUK_ERROR_TYPE_INVALID_ARGS(thr) \ - do { \ - duk_err_type((thr)); \ - } while (0) -#define DUK_DCERROR_TYPE_INVALID_ARGS(thr) \ - do { \ - DUK_UNREF((thr)); \ - return DUK_RET_TYPE_ERROR; \ - } while (0) -#define DUK_ERROR_TYPE_INVALID_STATE(thr) \ - do { \ - duk_err_type((thr)); \ - } while (0) -#define DUK_DCERROR_TYPE_INVALID_STATE(thr) \ - do { \ - duk_err_type((thr)); \ - } while (0) -#define DUK_ERROR_TYPE_INVALID_TRAP_RESULT(thr) \ - do { \ - duk_err_type((thr)); \ - } while (0) -#define DUK_DCERROR_TYPE_INVALID_TRAP_RESULT(thr) \ - do { \ - DUK_UNREF((thr)); \ - return DUK_RET_TYPE_ERROR; \ - } while (0) -#define DUK_ERROR_TYPE_INVALID_TRAP_RESULT(thr) \ - do { \ - duk_err_type((thr)); \ - } while (0) -#define DUK_ERROR_TYPE(thr, msg) \ - do { \ - duk_err_type((thr)); \ - } while (0) -#define DUK_ERROR_URI(thr, msg) \ - do { \ - duk_err_uri((thr)); \ - } while (0) -#endif /* DUK_USE_VERBOSE_ERRORS */ - -/* - * Assert macro: failure causes a fatal error. - * - * NOTE: since the assert macro doesn't take a heap/context argument, there's - * no way to look up a heap/context specific fatal error handler which may have - * been given by the application. Instead, assertion failures always use the - * internal default fatal error handler; it can be replaced via duk_config.h - * and then applies to all Duktape heaps. - */ - -#if defined(DUK_USE_ASSERTIONS) - -/* The message should be a compile time constant without formatting (less risk); - * we don't care about assertion text size because they're not used in production - * builds. - */ -#define DUK_ASSERT(x) \ - do { \ - if (!(x)) { \ - DUK_FATAL_WITHOUT_CONTEXT("assertion failed: " #x " (" DUK_FILE_MACRO \ - ":" DUK_MACRO_STRINGIFY(DUK_LINE_MACRO) ")"); \ - } \ - } while (0) - -/* Assertion compatible inside a comma expression, evaluates to void. */ -#define DUK_ASSERT_EXPR(x) \ - ((void) ((x) ? 0 : \ - (DUK_FATAL_WITHOUT_CONTEXT("assertion failed: " #x " (" DUK_FILE_MACRO \ - ":" DUK_MACRO_STRINGIFY(DUK_LINE_MACRO) ")"), \ - 0))) - -#else /* DUK_USE_ASSERTIONS */ - -#define DUK_ASSERT(x) \ - do { /* assertion omitted */ \ - } while (0) - -#define DUK_ASSERT_EXPR(x) ((void) 0) - -#endif /* DUK_USE_ASSERTIONS */ - -/* this variant is used when an assert would generate a compile warning by - * being always true (e.g. >= 0 comparison for an unsigned value - */ -#define DUK_ASSERT_DISABLE(x) \ - do { /* assertion disabled */ \ - } while (0) - -/* - * Assertion helpers - */ - -#if defined(DUK_USE_ASSERTIONS) && defined(DUK_USE_REFERENCE_COUNTING) -#define DUK_ASSERT_REFCOUNT_NONZERO_HEAPHDR(h) \ - do { \ - DUK_ASSERT((h) == NULL || DUK_HEAPHDR_GET_REFCOUNT((duk_heaphdr *) (h)) > 0); \ - } while (0) -#define DUK_ASSERT_REFCOUNT_NONZERO_TVAL(tv) \ - do { \ - if ((tv) != NULL && DUK_TVAL_IS_HEAP_ALLOCATED((tv))) { \ - DUK_ASSERT(DUK_HEAPHDR_GET_REFCOUNT(DUK_TVAL_GET_HEAPHDR((tv))) > 0); \ - } \ - } while (0) -#else -#define DUK_ASSERT_REFCOUNT_NONZERO_HEAPHDR(h) /* no refcount check */ -#define DUK_ASSERT_REFCOUNT_NONZERO_TVAL(tv) /* no refcount check */ -#endif - -#define DUK_ASSERT_TOP(ctx, n) DUK_ASSERT((duk_idx_t) duk_get_top((ctx)) == (duk_idx_t) (n)) - -#if defined(DUK_USE_ASSERTIONS) && defined(DUK_USE_PACKED_TVAL) -#define DUK_ASSERT_DOUBLE_IS_NORMALIZED(dval) \ - do { \ - duk_double_union duk__assert_tmp_du; \ - duk__assert_tmp_du.d = (dval); \ - DUK_ASSERT(DUK_DBLUNION_IS_NORMALIZED(&duk__assert_tmp_du)); \ - } while (0) -#else -#define DUK_ASSERT_DOUBLE_IS_NORMALIZED(dval) /* nop */ -#endif - -#define DUK_ASSERT_VS_SPACE(thr) DUK_ASSERT(thr->valstack_top < thr->valstack_end) - -/* - * Helper to initialize a memory area (e.g. struct) with garbage when - * assertions enabled. - */ - -#if defined(DUK_USE_ASSERTIONS) -#define DUK_ASSERT_SET_GARBAGE(ptr, size) \ - do { \ - duk_memset_unsafe((void *) (ptr), 0x5a, size); \ - } while (0) -#else -#define DUK_ASSERT_SET_GARBAGE(ptr, size) \ - do { \ - } while (0) -#endif - -/* - * Helper for valstack space - * - * Caller of DUK_ASSERT_VALSTACK_SPACE() estimates the number of free stack entries - * required for its own use, and any child calls which are not (a) Duktape API calls - * or (b) Duktape calls which involve extending the valstack (e.g. getter call). - */ - -#define DUK_VALSTACK_ASSERT_EXTRA \ - 5 /* this is added to checks to allow for Duktape \ - * API calls in addition to function's own use \ - */ -#if defined(DUK_USE_ASSERTIONS) -#define DUK_ASSERT_VALSTACK_SPACE(thr, n) \ - do { \ - DUK_ASSERT((thr) != NULL); \ - DUK_ASSERT((thr)->valstack_end - (thr)->valstack_top >= (n) + DUK_VALSTACK_ASSERT_EXTRA); \ - } while (0) -#else -#define DUK_ASSERT_VALSTACK_SPACE(thr, n) /* no valstack space check */ -#endif - -/* - * Prototypes - */ - -#if defined(DUK_USE_VERBOSE_ERRORS) -DUK_NORETURN( - DUK_INTERNAL_DECL void duk_err_handle_error(duk_hthread *thr, const char *filename, duk_uint_t line_and_code, const char *msg)); -DUK_NORETURN(DUK_INTERNAL_DECL void - duk_err_handle_error_fmt(duk_hthread *thr, const char *filename, duk_uint_t line_and_code, const char *fmt, ...)); -#else /* DUK_USE_VERBOSE_ERRORS */ -DUK_NORETURN(DUK_INTERNAL_DECL void duk_err_handle_error(duk_hthread *thr, duk_errcode_t code)); -#endif /* DUK_USE_VERBOSE_ERRORS */ - -#if defined(DUK_USE_VERBOSE_ERRORS) -DUK_NORETURN(DUK_INTERNAL_DECL void duk_err_create_and_throw(duk_hthread *thr, - duk_errcode_t code, - const char *msg, - const char *filename, - duk_int_t line)); -#else -DUK_NORETURN(DUK_INTERNAL_DECL void duk_err_create_and_throw(duk_hthread *thr, duk_errcode_t code)); -#endif - -DUK_NORETURN(DUK_INTERNAL_DECL void duk_error_throw_from_negative_rc(duk_hthread *thr, duk_ret_t rc)); - -#define DUK_AUGMENT_FLAG_NOBLAME_FILELINE (1U << 0) /* if set, don't blame C file/line for .fileName and .lineNumber */ -#define DUK_AUGMENT_FLAG_SKIP_ONE (1U << 1) /* if set, skip topmost activation in traceback construction */ - -#if defined(DUK_USE_AUGMENT_ERROR_CREATE) -DUK_INTERNAL_DECL void duk_err_augment_error_create(duk_hthread *thr, - duk_hthread *thr_callstack, - const char *filename, - duk_int_t line, - duk_small_uint_t flags); -#endif -#if defined(DUK_USE_AUGMENT_ERROR_THROW) -DUK_INTERNAL_DECL void duk_err_augment_error_throw(duk_hthread *thr); -#endif - -#if defined(DUK_USE_VERBOSE_ERRORS) -#if defined(DUK_USE_PARANOID_ERRORS) -DUK_NORETURN(DUK_INTERNAL_DECL void duk_err_require_type_index(duk_hthread *thr, - const char *filename, - duk_int_t linenumber, - duk_idx_t idx, - const char *expect_name)); -#else -DUK_NORETURN(DUK_INTERNAL_DECL void duk_err_require_type_index(duk_hthread *thr, - const char *filename, - duk_int_t linenumber, - duk_idx_t idx, - const char *expect_name)); -#endif -DUK_NORETURN(DUK_INTERNAL_DECL void duk_err_error_internal(duk_hthread *thr, const char *filename, duk_int_t linenumber)); -DUK_NORETURN(DUK_INTERNAL_DECL void duk_err_error_alloc_failed(duk_hthread *thr, const char *filename, duk_int_t linenumber)); -DUK_NORETURN( - DUK_INTERNAL_DECL void duk_err_error(duk_hthread *thr, const char *filename, duk_int_t linenumber, const char *message)); -DUK_NORETURN( - DUK_INTERNAL_DECL void duk_err_range_index(duk_hthread *thr, const char *filename, duk_int_t linenumber, duk_idx_t idx)); -DUK_NORETURN(DUK_INTERNAL_DECL void duk_err_range_push_beyond(duk_hthread *thr, const char *filename, duk_int_t linenumber)); -DUK_NORETURN( - DUK_INTERNAL_DECL void duk_err_range(duk_hthread *thr, const char *filename, duk_int_t linenumber, const char *message)); -DUK_NORETURN(DUK_INTERNAL_DECL void duk_err_type_invalid_args(duk_hthread *thr, const char *filename, duk_int_t linenumber)); -DUK_NORETURN(DUK_INTERNAL_DECL void duk_err_type_invalid_state(duk_hthread *thr, const char *filename, duk_int_t linenumber)); -DUK_NORETURN(DUK_INTERNAL_DECL void duk_err_type_invalid_trap_result(duk_hthread *thr, const char *filename, duk_int_t linenumber)); -#else /* DUK_VERBOSE_ERRORS */ -DUK_NORETURN(DUK_INTERNAL_DECL void duk_err_error(duk_hthread *thr)); -DUK_NORETURN(DUK_INTERNAL_DECL void duk_err_range(duk_hthread *thr)); -DUK_NORETURN(DUK_INTERNAL_DECL void duk_err_eval(duk_hthread *thr)); -DUK_NORETURN(DUK_INTERNAL_DECL void duk_err_reference(duk_hthread *thr)); -DUK_NORETURN(DUK_INTERNAL_DECL void duk_err_syntax(duk_hthread *thr)); -DUK_NORETURN(DUK_INTERNAL_DECL void duk_err_type(duk_hthread *thr)); -DUK_NORETURN(DUK_INTERNAL_DECL void duk_err_uri(duk_hthread *thr)); -#endif /* DUK_VERBOSE_ERRORS */ - -DUK_NORETURN(DUK_INTERNAL_DECL void duk_err_longjmp(duk_hthread *thr)); - -DUK_NORETURN(DUK_INTERNAL_DECL void duk_default_fatal_handler(void *udata, const char *msg)); - -DUK_INTERNAL_DECL void duk_err_setup_ljstate1(duk_hthread *thr, duk_small_uint_t lj_type, duk_tval *tv_val); -#if defined(DUK_USE_DEBUGGER_SUPPORT) -DUK_INTERNAL_DECL void duk_err_check_debugger_integration(duk_hthread *thr); -#endif - -DUK_INTERNAL_DECL duk_hobject *duk_error_prototype_from_code(duk_hthread *thr, duk_errcode_t err_code); - -#endif /* DUK_ERROR_H_INCLUDED */ -/* #include duk_unicode.h */ -#line 1 "duk_unicode.h" -/* - * Unicode helpers - */ - -#if !defined(DUK_UNICODE_H_INCLUDED) -#define DUK_UNICODE_H_INCLUDED - -/* - * UTF-8 / XUTF-8 / CESU-8 constants - */ - -#define DUK_UNICODE_MAX_XUTF8_LENGTH 7 /* up to 36 bit codepoints */ -#define DUK_UNICODE_MAX_XUTF8_BMP_LENGTH 3 /* all codepoints up to U+FFFF */ -#define DUK_UNICODE_MAX_CESU8_LENGTH 6 /* all codepoints up to U+10FFFF */ -#define DUK_UNICODE_MAX_CESU8_BMP_LENGTH 3 /* all codepoints up to U+FFFF */ - -/* - * Useful Unicode codepoints - * - * Integer constants must be signed to avoid unexpected coercions - * in comparisons. - */ - -#define DUK_UNICODE_CP_ZWNJ 0x200cL /* zero-width non-joiner */ -#define DUK_UNICODE_CP_ZWJ 0x200dL /* zero-width joiner */ -#define DUK_UNICODE_CP_REPLACEMENT_CHARACTER \ - 0xfffdL /* http://en.wikipedia.org/wiki/Replacement_character#Replacement_character \ - */ - -/* - * ASCII character constants - * - * C character literals like 'x' have a platform specific value and do - * not match ASCII (UTF-8) values on e.g. EBCDIC platforms. So, use - * these (admittedly awkward) constants instead. These constants must - * also have signed values to avoid unexpected coercions in comparisons. - * - * http://en.wikipedia.org/wiki/ASCII - */ - -#define DUK_ASC_NUL 0x00 -#define DUK_ASC_SOH 0x01 -#define DUK_ASC_STX 0x02 -#define DUK_ASC_ETX 0x03 -#define DUK_ASC_EOT 0x04 -#define DUK_ASC_ENQ 0x05 -#define DUK_ASC_ACK 0x06 -#define DUK_ASC_BEL 0x07 -#define DUK_ASC_BS 0x08 -#define DUK_ASC_HT 0x09 -#define DUK_ASC_LF 0x0a -#define DUK_ASC_VT 0x0b -#define DUK_ASC_FF 0x0c -#define DUK_ASC_CR 0x0d -#define DUK_ASC_SO 0x0e -#define DUK_ASC_SI 0x0f -#define DUK_ASC_DLE 0x10 -#define DUK_ASC_DC1 0x11 -#define DUK_ASC_DC2 0x12 -#define DUK_ASC_DC3 0x13 -#define DUK_ASC_DC4 0x14 -#define DUK_ASC_NAK 0x15 -#define DUK_ASC_SYN 0x16 -#define DUK_ASC_ETB 0x17 -#define DUK_ASC_CAN 0x18 -#define DUK_ASC_EM 0x19 -#define DUK_ASC_SUB 0x1a -#define DUK_ASC_ESC 0x1b -#define DUK_ASC_FS 0x1c -#define DUK_ASC_GS 0x1d -#define DUK_ASC_RS 0x1e -#define DUK_ASC_US 0x1f -#define DUK_ASC_SPACE 0x20 -#define DUK_ASC_EXCLAMATION 0x21 -#define DUK_ASC_DOUBLEQUOTE 0x22 -#define DUK_ASC_HASH 0x23 -#define DUK_ASC_DOLLAR 0x24 -#define DUK_ASC_PERCENT 0x25 -#define DUK_ASC_AMP 0x26 -#define DUK_ASC_SINGLEQUOTE 0x27 -#define DUK_ASC_LPAREN 0x28 -#define DUK_ASC_RPAREN 0x29 -#define DUK_ASC_STAR 0x2a -#define DUK_ASC_PLUS 0x2b -#define DUK_ASC_COMMA 0x2c -#define DUK_ASC_MINUS 0x2d -#define DUK_ASC_PERIOD 0x2e -#define DUK_ASC_SLASH 0x2f -#define DUK_ASC_0 0x30 -#define DUK_ASC_1 0x31 -#define DUK_ASC_2 0x32 -#define DUK_ASC_3 0x33 -#define DUK_ASC_4 0x34 -#define DUK_ASC_5 0x35 -#define DUK_ASC_6 0x36 -#define DUK_ASC_7 0x37 -#define DUK_ASC_8 0x38 -#define DUK_ASC_9 0x39 -#define DUK_ASC_COLON 0x3a -#define DUK_ASC_SEMICOLON 0x3b -#define DUK_ASC_LANGLE 0x3c -#define DUK_ASC_EQUALS 0x3d -#define DUK_ASC_RANGLE 0x3e -#define DUK_ASC_QUESTION 0x3f -#define DUK_ASC_ATSIGN 0x40 -#define DUK_ASC_UC_A 0x41 -#define DUK_ASC_UC_B 0x42 -#define DUK_ASC_UC_C 0x43 -#define DUK_ASC_UC_D 0x44 -#define DUK_ASC_UC_E 0x45 -#define DUK_ASC_UC_F 0x46 -#define DUK_ASC_UC_G 0x47 -#define DUK_ASC_UC_H 0x48 -#define DUK_ASC_UC_I 0x49 -#define DUK_ASC_UC_J 0x4a -#define DUK_ASC_UC_K 0x4b -#define DUK_ASC_UC_L 0x4c -#define DUK_ASC_UC_M 0x4d -#define DUK_ASC_UC_N 0x4e -#define DUK_ASC_UC_O 0x4f -#define DUK_ASC_UC_P 0x50 -#define DUK_ASC_UC_Q 0x51 -#define DUK_ASC_UC_R 0x52 -#define DUK_ASC_UC_S 0x53 -#define DUK_ASC_UC_T 0x54 -#define DUK_ASC_UC_U 0x55 -#define DUK_ASC_UC_V 0x56 -#define DUK_ASC_UC_W 0x57 -#define DUK_ASC_UC_X 0x58 -#define DUK_ASC_UC_Y 0x59 -#define DUK_ASC_UC_Z 0x5a -#define DUK_ASC_LBRACKET 0x5b -#define DUK_ASC_BACKSLASH 0x5c -#define DUK_ASC_RBRACKET 0x5d -#define DUK_ASC_CARET 0x5e -#define DUK_ASC_UNDERSCORE 0x5f -#define DUK_ASC_GRAVE 0x60 -#define DUK_ASC_LC_A 0x61 -#define DUK_ASC_LC_B 0x62 -#define DUK_ASC_LC_C 0x63 -#define DUK_ASC_LC_D 0x64 -#define DUK_ASC_LC_E 0x65 -#define DUK_ASC_LC_F 0x66 -#define DUK_ASC_LC_G 0x67 -#define DUK_ASC_LC_H 0x68 -#define DUK_ASC_LC_I 0x69 -#define DUK_ASC_LC_J 0x6a -#define DUK_ASC_LC_K 0x6b -#define DUK_ASC_LC_L 0x6c -#define DUK_ASC_LC_M 0x6d -#define DUK_ASC_LC_N 0x6e -#define DUK_ASC_LC_O 0x6f -#define DUK_ASC_LC_P 0x70 -#define DUK_ASC_LC_Q 0x71 -#define DUK_ASC_LC_R 0x72 -#define DUK_ASC_LC_S 0x73 -#define DUK_ASC_LC_T 0x74 -#define DUK_ASC_LC_U 0x75 -#define DUK_ASC_LC_V 0x76 -#define DUK_ASC_LC_W 0x77 -#define DUK_ASC_LC_X 0x78 -#define DUK_ASC_LC_Y 0x79 -#define DUK_ASC_LC_Z 0x7a -#define DUK_ASC_LCURLY 0x7b -#define DUK_ASC_PIPE 0x7c -#define DUK_ASC_RCURLY 0x7d -#define DUK_ASC_TILDE 0x7e -#define DUK_ASC_DEL 0x7f - -/* - * Miscellaneous - */ - -/* Uppercase A is 0x41, lowercase a is 0x61; OR 0x20 to convert uppercase - * to lowercase. - */ -#define DUK_LOWERCASE_CHAR_ASCII(x) ((x) | 0x20) - -/* - * Unicode tables - */ - -#if defined(DUK_USE_SOURCE_NONBMP) -/* - * Automatically generated by extract_chars.py, do not edit! - */ - -extern const duk_uint8_t duk_unicode_ids_noa[1116]; -#else -/* - * Automatically generated by extract_chars.py, do not edit! - */ - -extern const duk_uint8_t duk_unicode_ids_noabmp[625]; -#endif - -#if defined(DUK_USE_SOURCE_NONBMP) -/* - * Automatically generated by extract_chars.py, do not edit! - */ - -extern const duk_uint8_t duk_unicode_ids_m_let_noa[42]; -#else -/* - * Automatically generated by extract_chars.py, do not edit! - */ - -extern const duk_uint8_t duk_unicode_ids_m_let_noabmp[24]; -#endif - -#if defined(DUK_USE_SOURCE_NONBMP) -/* - * Automatically generated by extract_chars.py, do not edit! - */ - -extern const duk_uint8_t duk_unicode_idp_m_ids_noa[576]; -#else -/* - * Automatically generated by extract_chars.py, do not edit! - */ - -extern const duk_uint8_t duk_unicode_idp_m_ids_noabmp[358]; -#endif - -/* - * Automatically generated by extract_caseconv.py, do not edit! - */ - -extern const duk_uint8_t duk_unicode_caseconv_uc[1411]; -extern const duk_uint8_t duk_unicode_caseconv_lc[706]; - -#if defined(DUK_USE_REGEXP_CANON_WORKAROUND) -/* - * Automatically generated by extract_caseconv.py, do not edit! - */ - -extern const duk_uint16_t duk_unicode_re_canon_lookup[65536]; -#endif - -#if defined(DUK_USE_REGEXP_CANON_BITMAP) -/* - * Automatically generated by extract_caseconv.py, do not edit! - */ - -#define DUK_CANON_BITMAP_BLKSIZE 32 -#define DUK_CANON_BITMAP_BLKSHIFT 5 -#define DUK_CANON_BITMAP_BLKMASK 31 -extern const duk_uint8_t duk_unicode_re_canon_bitmap[256]; -#endif - -/* - * Extern - */ - -/* duk_unicode_support.c */ -#if !defined(DUK_SINGLE_FILE) -DUK_INTERNAL_DECL const duk_uint8_t duk_unicode_xutf8_markers[7]; -DUK_INTERNAL_DECL const duk_uint16_t duk_unicode_re_ranges_digit[2]; -DUK_INTERNAL_DECL const duk_uint16_t duk_unicode_re_ranges_white[22]; -DUK_INTERNAL_DECL const duk_uint16_t duk_unicode_re_ranges_wordchar[8]; -DUK_INTERNAL_DECL const duk_uint16_t duk_unicode_re_ranges_not_digit[4]; -DUK_INTERNAL_DECL const duk_uint16_t duk_unicode_re_ranges_not_white[24]; -DUK_INTERNAL_DECL const duk_uint16_t duk_unicode_re_ranges_not_wordchar[10]; -DUK_INTERNAL_DECL const duk_int8_t duk_is_idchar_tab[128]; -#endif /* !DUK_SINGLE_FILE */ - -/* - * Prototypes - */ - -DUK_INTERNAL_DECL duk_small_int_t duk_unicode_get_xutf8_length(duk_ucodepoint_t cp); -#if defined(DUK_USE_ASSERTIONS) -DUK_INTERNAL_DECL duk_small_int_t duk_unicode_get_cesu8_length(duk_ucodepoint_t cp); -#endif -DUK_INTERNAL_DECL duk_small_int_t duk_unicode_encode_xutf8(duk_ucodepoint_t cp, duk_uint8_t *out); -DUK_INTERNAL_DECL duk_small_int_t duk_unicode_encode_cesu8(duk_ucodepoint_t cp, duk_uint8_t *out); -DUK_INTERNAL_DECL duk_small_int_t duk_unicode_decode_xutf8(duk_hthread *thr, - const duk_uint8_t **ptr, - const duk_uint8_t *ptr_start, - const duk_uint8_t *ptr_end, - duk_ucodepoint_t *out_cp); -DUK_INTERNAL_DECL duk_ucodepoint_t duk_unicode_decode_xutf8_checked(duk_hthread *thr, - const duk_uint8_t **ptr, - const duk_uint8_t *ptr_start, - const duk_uint8_t *ptr_end); -DUK_INTERNAL_DECL duk_size_t duk_unicode_unvalidated_utf8_length(const duk_uint8_t *data, duk_size_t blen); -DUK_INTERNAL_DECL duk_bool_t duk_unicode_is_utf8_compatible(const duk_uint8_t *buf, duk_size_t len); -DUK_INTERNAL_DECL duk_small_int_t duk_unicode_is_whitespace(duk_codepoint_t cp); -DUK_INTERNAL_DECL duk_small_int_t duk_unicode_is_line_terminator(duk_codepoint_t cp); -DUK_INTERNAL_DECL duk_small_int_t duk_unicode_is_identifier_start(duk_codepoint_t cp); -DUK_INTERNAL_DECL duk_small_int_t duk_unicode_is_identifier_part(duk_codepoint_t cp); -DUK_INTERNAL_DECL duk_small_int_t duk_unicode_is_letter(duk_codepoint_t cp); -DUK_INTERNAL_DECL void duk_unicode_case_convert_string(duk_hthread *thr, duk_bool_t uppercase); -#if defined(DUK_USE_REGEXP_SUPPORT) -DUK_INTERNAL_DECL duk_codepoint_t duk_unicode_re_canonicalize_char(duk_hthread *thr, duk_codepoint_t cp); -DUK_INTERNAL_DECL duk_small_int_t duk_unicode_re_is_wordchar(duk_codepoint_t cp); -#endif - -#endif /* DUK_UNICODE_H_INCLUDED */ -/* #include duk_json.h */ -#line 1 "duk_json.h" -/* - * Defines for JSON, especially duk_bi_json.c. - */ - -#if !defined(DUK_JSON_H_INCLUDED) -#define DUK_JSON_H_INCLUDED - -/* Encoding/decoding flags */ -#define DUK_JSON_FLAG_ASCII_ONLY (1U << 0) /* escape any non-ASCII characters */ -#define DUK_JSON_FLAG_AVOID_KEY_QUOTES (1U << 1) /* avoid key quotes when key is an ASCII Identifier */ -#define DUK_JSON_FLAG_EXT_CUSTOM (1U << 2) /* extended types: custom encoding */ -#define DUK_JSON_FLAG_EXT_COMPATIBLE (1U << 3) /* extended types: compatible encoding */ - -/* How much stack to require on entry to object/array encode */ -#define DUK_JSON_ENC_REQSTACK 32 - -/* How much stack to require on entry to object/array decode */ -#define DUK_JSON_DEC_REQSTACK 32 - -/* How large a loop detection stack to use */ -#define DUK_JSON_ENC_LOOPARRAY 64 - -/* Encoding state. Heap object references are all borrowed. */ -typedef struct { - duk_hthread *thr; - duk_bufwriter_ctx bw; /* output bufwriter */ - duk_hobject *h_replacer; /* replacer function */ - duk_hstring *h_gap; /* gap (if empty string, NULL) */ - duk_idx_t idx_proplist; /* explicit PropertyList */ - duk_idx_t idx_loop; /* valstack index of loop detection object */ - duk_small_uint_t flags; - duk_small_uint_t flag_ascii_only; - duk_small_uint_t flag_avoid_key_quotes; -#if defined(DUK_USE_JX) || defined(DUK_USE_JC) - duk_small_uint_t flag_ext_custom; - duk_small_uint_t flag_ext_compatible; - duk_small_uint_t flag_ext_custom_or_compatible; -#endif - duk_uint_t recursion_depth; - duk_uint_t recursion_limit; - duk_uint_t mask_for_undefined; /* type bit mask: types which certainly produce 'undefined' */ -#if defined(DUK_USE_JX) || defined(DUK_USE_JC) - duk_small_uint_t stridx_custom_undefined; - duk_small_uint_t stridx_custom_nan; - duk_small_uint_t stridx_custom_neginf; - duk_small_uint_t stridx_custom_posinf; - duk_small_uint_t stridx_custom_function; -#endif - duk_hobject *visiting[DUK_JSON_ENC_LOOPARRAY]; /* indexed by recursion_depth */ -} duk_json_enc_ctx; - -typedef struct { - duk_hthread *thr; - const duk_uint8_t *p; - const duk_uint8_t *p_start; - const duk_uint8_t *p_end; - duk_idx_t idx_reviver; - duk_small_uint_t flags; -#if defined(DUK_USE_JX) || defined(DUK_USE_JC) - duk_small_uint_t flag_ext_custom; - duk_small_uint_t flag_ext_compatible; - duk_small_uint_t flag_ext_custom_or_compatible; -#endif - duk_int_t recursion_depth; - duk_int_t recursion_limit; -} duk_json_dec_ctx; - -#endif /* DUK_JSON_H_INCLUDED */ -/* #include duk_js.h */ -#line 1 "duk_js.h" -/* - * ECMAScript execution, support primitives. - */ - -#if !defined(DUK_JS_H_INCLUDED) -#define DUK_JS_H_INCLUDED - -/* Flags for call handling. Lowest flags must match bytecode DUK_BC_CALL_FLAG_xxx 1:1. */ -#define DUK_CALL_FLAG_TAILCALL (1U << 0) /* setup for a tail call */ -#define DUK_CALL_FLAG_CONSTRUCT (1U << 1) /* constructor call (i.e. called as 'new Foo()') */ -#define DUK_CALL_FLAG_CALLED_AS_EVAL (1U << 2) /* call was made using the identifier 'eval' */ -#define DUK_CALL_FLAG_ALLOW_ECMATOECMA (1U << 3) /* ecma-to-ecma call with executor reuse is possible */ -#define DUK_CALL_FLAG_DIRECT_EVAL (1U << 4) /* call is a direct eval call */ -#define DUK_CALL_FLAG_CONSTRUCT_PROXY (1U << 5) /* handled via 'construct' proxy trap, check return value invariant(s) */ -#define DUK_CALL_FLAG_DEFAULT_INSTANCE_UPDATED \ - (1U << 6) /* prototype of 'default instance' updated, temporary flag in call handling */ - -/* Flags for duk_js_equals_helper(). */ -#define DUK_EQUALS_FLAG_SAMEVALUE (1U << 0) /* use SameValue instead of non-strict equality */ -#define DUK_EQUALS_FLAG_STRICT (1U << 1) /* use strict equality instead of non-strict equality */ - -/* Flags for duk_js_compare_helper(). */ -#define DUK_COMPARE_FLAG_NEGATE (1U << 0) /* negate result */ -#define DUK_COMPARE_FLAG_EVAL_LEFT_FIRST (1U << 1) /* eval left argument first */ - -/* conversions, coercions, comparison, etc */ -DUK_INTERNAL_DECL duk_bool_t duk_js_toboolean(duk_tval *tv); -DUK_INTERNAL_DECL duk_double_t duk_js_tonumber(duk_hthread *thr, duk_tval *tv); -DUK_INTERNAL_DECL duk_double_t duk_js_tointeger_number(duk_double_t x); -DUK_INTERNAL_DECL duk_double_t duk_js_tointeger(duk_hthread *thr, duk_tval *tv); -DUK_INTERNAL_DECL duk_uint32_t duk_js_touint32(duk_hthread *thr, duk_tval *tv); -DUK_INTERNAL_DECL duk_int32_t duk_js_toint32(duk_hthread *thr, duk_tval *tv); -DUK_INTERNAL_DECL duk_uint16_t duk_js_touint16(duk_hthread *thr, duk_tval *tv); -DUK_INTERNAL_DECL duk_uarridx_t duk_js_to_arrayindex_string(const duk_uint8_t *str, duk_uint32_t blen); -#if !defined(DUK_USE_HSTRING_ARRIDX) -DUK_INTERNAL_DECL duk_uarridx_t duk_js_to_arrayindex_hstring_fast_known(duk_hstring *h); -DUK_INTERNAL_DECL duk_uarridx_t duk_js_to_arrayindex_hstring_fast(duk_hstring *h); -#endif -DUK_INTERNAL_DECL duk_bool_t duk_js_equals_helper(duk_hthread *thr, duk_tval *tv_x, duk_tval *tv_y, duk_small_uint_t flags); -DUK_INTERNAL_DECL duk_small_int_t duk_js_data_compare(const duk_uint8_t *buf1, - const duk_uint8_t *buf2, - duk_size_t len1, - duk_size_t len2); -DUK_INTERNAL_DECL duk_small_int_t duk_js_string_compare(duk_hstring *h1, duk_hstring *h2); -#if 0 /* unused */ -DUK_INTERNAL_DECL duk_small_int_t duk_js_buffer_compare(duk_heap *heap, duk_hbuffer *h1, duk_hbuffer *h2); -#endif -DUK_INTERNAL_DECL duk_bool_t duk_js_compare_helper(duk_hthread *thr, duk_tval *tv_x, duk_tval *tv_y, duk_small_uint_t flags); -DUK_INTERNAL_DECL duk_bool_t duk_js_instanceof(duk_hthread *thr, duk_tval *tv_x, duk_tval *tv_y); -#if defined(DUK_USE_SYMBOL_BUILTIN) -DUK_INTERNAL_DECL duk_bool_t duk_js_instanceof_ordinary(duk_hthread *thr, duk_tval *tv_x, duk_tval *tv_y); -#endif -DUK_INTERNAL_DECL duk_bool_t duk_js_in(duk_hthread *thr, duk_tval *tv_x, duk_tval *tv_y); -DUK_INTERNAL_DECL duk_small_uint_t duk_js_typeof_stridx(duk_tval *tv_x); -DUK_INTERNAL_DECL duk_bool_t duk_js_isarray_hobject(duk_hobject *h); -DUK_INTERNAL_DECL duk_bool_t duk_js_isarray(duk_tval *tv); - -/* arithmetic */ -DUK_INTERNAL_DECL double duk_js_arith_pow(double x, double y); -DUK_INTERNAL_DECL double duk_js_arith_mod(double x, double y); - -#define duk_js_equals(thr, tv_x, tv_y) duk_js_equals_helper((thr), (tv_x), (tv_y), 0) -#define duk_js_strict_equals(tv_x, tv_y) duk_js_equals_helper(NULL, (tv_x), (tv_y), DUK_EQUALS_FLAG_STRICT) -#define duk_js_samevalue(tv_x, tv_y) duk_js_equals_helper(NULL, (tv_x), (tv_y), DUK_EQUALS_FLAG_SAMEVALUE) - -/* E5 Sections 11.8.1, 11.8.5; x < y */ -#define duk_js_lessthan(thr, tv_x, tv_y) duk_js_compare_helper((thr), (tv_x), (tv_Y), DUK_COMPARE_FLAG_EVAL_LEFT_FIRST) - -/* E5 Sections 11.8.2, 11.8.5; x > y --> y < x */ -#define duk_js_greaterthan(thr, tv_x, tv_y) duk_js_compare_helper((thr), (tv_y), (tv_x), 0) - -/* E5 Sections 11.8.3, 11.8.5; x <= y --> not (x > y) --> not (y < x) */ -#define duk_js_lessthanorequal(thr, tv_x, tv_y) duk_js_compare_helper((thr), (tv_y), (tv_x), DUK_COMPARE_FLAG_NEGATE) - -/* E5 Sections 11.8.4, 11.8.5; x >= y --> not (x < y) */ -#define duk_js_greaterthanorequal(thr, tv_x, tv_y) \ - duk_js_compare_helper((thr), (tv_x), (tv_y), DUK_COMPARE_FLAG_EVAL_LEFT_FIRST | DUK_COMPARE_FLAG_NEGATE) - -/* identifiers and environment handling */ -#if 0 /*unused*/ -DUK_INTERNAL duk_bool_t duk_js_hasvar_envrec(duk_hthread *thr, duk_hobject *env, duk_hstring *name); -#endif -DUK_INTERNAL_DECL duk_bool_t duk_js_getvar_envrec(duk_hthread *thr, duk_hobject *env, duk_hstring *name, duk_bool_t throw_flag); -DUK_INTERNAL_DECL duk_bool_t duk_js_getvar_activation(duk_hthread *thr, - duk_activation *act, - duk_hstring *name, - duk_bool_t throw_flag); -DUK_INTERNAL_DECL void duk_js_putvar_envrec(duk_hthread *thr, - duk_hobject *env, - duk_hstring *name, - duk_tval *val, - duk_bool_t strict); -DUK_INTERNAL_DECL void duk_js_putvar_activation(duk_hthread *thr, - duk_activation *act, - duk_hstring *name, - duk_tval *val, - duk_bool_t strict); -#if 0 /*unused*/ -DUK_INTERNAL_DECL duk_bool_t duk_js_delvar_envrec(duk_hthread *thr, duk_hobject *env, duk_hstring *name); -#endif -DUK_INTERNAL_DECL duk_bool_t duk_js_delvar_activation(duk_hthread *thr, duk_activation *act, duk_hstring *name); -DUK_INTERNAL_DECL duk_bool_t duk_js_declvar_activation(duk_hthread *thr, - duk_activation *act, - duk_hstring *name, - duk_tval *val, - duk_small_uint_t prop_flags, - duk_bool_t is_func_decl); -DUK_INTERNAL_DECL void duk_js_init_activation_environment_records_delayed(duk_hthread *thr, duk_activation *act); -DUK_INTERNAL_DECL void duk_js_close_environment_record(duk_hthread *thr, duk_hobject *env); -DUK_INTERNAL_DECL duk_hobject *duk_create_activation_environment_record(duk_hthread *thr, - duk_hobject *func, - duk_size_t bottom_byteoff); -DUK_INTERNAL_DECL void duk_js_push_closure(duk_hthread *thr, - duk_hcompfunc *fun_temp, - duk_hobject *outer_var_env, - duk_hobject *outer_lex_env, - duk_bool_t add_auto_proto); - -/* call handling */ -DUK_INTERNAL_DECL void duk_native_stack_check(duk_hthread *thr); -DUK_INTERNAL_DECL duk_int_t duk_handle_call_unprotected(duk_hthread *thr, duk_idx_t idx_func, duk_small_uint_t call_flags); -DUK_INTERNAL_DECL duk_int_t duk_handle_call_unprotected_nargs(duk_hthread *thr, duk_idx_t nargs, duk_small_uint_t call_flags); -DUK_INTERNAL_DECL duk_int_t -duk_handle_safe_call(duk_hthread *thr, duk_safe_call_function func, void *udata, duk_idx_t num_stack_args, duk_idx_t num_stack_res); -DUK_INTERNAL_DECL void duk_call_construct_postprocess(duk_hthread *thr, duk_small_uint_t proxy_invariant); -#if defined(DUK_USE_VERBOSE_ERRORS) -DUK_INTERNAL_DECL void duk_call_setup_propcall_error(duk_hthread *thr, duk_tval *tv_base, duk_tval *tv_key); -#endif - -/* bytecode execution */ -DUK_INTERNAL_DECL void duk_js_execute_bytecode(duk_hthread *exec_thr); - -#endif /* DUK_JS_H_INCLUDED */ -/* #include duk_numconv.h */ -#line 1 "duk_numconv.h" -/* - * Number-to-string conversion. The semantics of these is very tightly - * bound with the ECMAScript semantics required for call sites. - */ - -#if !defined(DUK_NUMCONV_H_INCLUDED) -#define DUK_NUMCONV_H_INCLUDED - -/* Output a specified number of digits instead of using the shortest - * form. Used for toPrecision() and toFixed(). - */ -#define DUK_N2S_FLAG_FIXED_FORMAT (1U << 0) - -/* Force exponential format. Used for toExponential(). */ -#define DUK_N2S_FLAG_FORCE_EXP (1U << 1) - -/* If number would need zero padding (for whole number part), use - * exponential format instead. E.g. if input number is 12300, 3 - * digits are generated ("123"), output "1.23e+4" instead of "12300". - * Used for toPrecision(). - */ -#define DUK_N2S_FLAG_NO_ZERO_PAD (1U << 2) - -/* Digit count indicates number of fractions (i.e. an absolute - * digit index instead of a relative one). Used together with - * DUK_N2S_FLAG_FIXED_FORMAT for toFixed(). - */ -#define DUK_N2S_FLAG_FRACTION_DIGITS (1U << 3) - -/* - * String-to-number conversion - */ - -/* Maximum exponent value when parsing numbers. This is not strictly - * compliant as there should be no upper limit, but as we parse the - * exponent without a bigint, impose some limit. The limit should be - * small enough that multiplying it (or limit-1 to be precise) won't - * overflow signed 32-bit integer range. Exponent is only parsed with - * radix 10, but with maximum radix (36) a safe limit is: - * (10000000*36).toString(16) -> '15752a00' - */ -#define DUK_S2N_MAX_EXPONENT 10000000L - -/* Trim white space (= allow leading and trailing whitespace) */ -#define DUK_S2N_FLAG_TRIM_WHITE (1U << 0) - -/* Allow exponent */ -#define DUK_S2N_FLAG_ALLOW_EXP (1U << 1) - -/* Allow trailing garbage (e.g. treat "123foo" as "123) */ -#define DUK_S2N_FLAG_ALLOW_GARBAGE (1U << 2) - -/* Allow leading plus sign */ -#define DUK_S2N_FLAG_ALLOW_PLUS (1U << 3) - -/* Allow leading minus sign */ -#define DUK_S2N_FLAG_ALLOW_MINUS (1U << 4) - -/* Allow 'Infinity' */ -#define DUK_S2N_FLAG_ALLOW_INF (1U << 5) - -/* Allow fraction part */ -#define DUK_S2N_FLAG_ALLOW_FRAC (1U << 6) - -/* Allow naked fraction (e.g. ".123") */ -#define DUK_S2N_FLAG_ALLOW_NAKED_FRAC (1U << 7) - -/* Allow empty fraction (e.g. "123.") */ -#define DUK_S2N_FLAG_ALLOW_EMPTY_FRAC (1U << 8) - -/* Allow empty string to be interpreted as 0 */ -#define DUK_S2N_FLAG_ALLOW_EMPTY_AS_ZERO (1U << 9) - -/* Allow leading zeroes (e.g. "0123" -> "123") */ -#define DUK_S2N_FLAG_ALLOW_LEADING_ZERO (1U << 10) - -/* Allow automatic detection of hex base ("0x" or "0X" prefix), - * overrides radix argument and forces integer mode. - */ -#define DUK_S2N_FLAG_ALLOW_AUTO_HEX_INT (1U << 11) - -/* Allow automatic detection of legacy octal base ("0n"), - * overrides radix argument and forces integer mode. - */ -#define DUK_S2N_FLAG_ALLOW_AUTO_LEGACY_OCT_INT (1U << 12) - -/* Allow automatic detection of ES2015 octal base ("0o123"), - * overrides radix argument and forces integer mode. - */ -#define DUK_S2N_FLAG_ALLOW_AUTO_OCT_INT (1U << 13) - -/* Allow automatic detection of ES2015 binary base ("0b10001"), - * overrides radix argument and forces integer mode. - */ -#define DUK_S2N_FLAG_ALLOW_AUTO_BIN_INT (1U << 14) - -/* - * Prototypes - */ - -DUK_INTERNAL_DECL void duk_numconv_stringify(duk_hthread *thr, - duk_small_int_t radix, - duk_small_int_t digits, - duk_small_uint_t flags); -DUK_INTERNAL_DECL void duk_numconv_parse(duk_hthread *thr, duk_small_int_t radix, duk_small_uint_t flags); - -#endif /* DUK_NUMCONV_H_INCLUDED */ -/* #include duk_bi_protos.h */ -#line 1 "duk_bi_protos.h" -/* - * Prototypes for built-in functions not automatically covered by the - * header declarations emitted by genbuiltins.py. - */ - -#if !defined(DUK_BUILTIN_PROTOS_H_INCLUDED) -#define DUK_BUILTIN_PROTOS_H_INCLUDED - -/* Buffer size needed for ISO 8601 formatting. - * Accurate value is 32 + 1 for NUL termination: - * >>> len('+123456-01-23T12:34:56.123+12:34') - * 32 - * Include additional space to be safe. - */ -#define DUK_BI_DATE_ISO8601_BUFSIZE 40 - -/* Helpers exposed for internal use */ -DUK_INTERNAL_DECL void duk_bi_date_timeval_to_parts(duk_double_t d, duk_int_t *parts, duk_double_t *dparts, duk_small_uint_t flags); -DUK_INTERNAL_DECL duk_double_t duk_bi_date_get_timeval_from_dparts(duk_double_t *dparts, duk_small_uint_t flags); -DUK_INTERNAL_DECL duk_bool_t duk_bi_date_is_leap_year(duk_int_t year); -DUK_INTERNAL_DECL duk_bool_t duk_bi_date_timeval_in_valid_range(duk_double_t x); -DUK_INTERNAL_DECL duk_bool_t duk_bi_date_year_in_valid_range(duk_double_t year); -DUK_INTERNAL_DECL duk_bool_t duk_bi_date_timeval_in_leeway_range(duk_double_t x); -/* Built-in providers */ -#if defined(DUK_USE_DATE_NOW_GETTIMEOFDAY) -DUK_INTERNAL_DECL duk_double_t duk_bi_date_get_now_gettimeofday(void); -#endif -#if defined(DUK_USE_DATE_NOW_TIME) -DUK_INTERNAL_DECL duk_double_t duk_bi_date_get_now_time(void); -#endif -#if defined(DUK_USE_DATE_NOW_WINDOWS) -DUK_INTERNAL_DECL duk_double_t duk_bi_date_get_now_windows(void); -#endif -#if defined(DUK_USE_DATE_NOW_WINDOWS_SUBMS) -DUK_INTERNAL_DECL duk_double_t duk_bi_date_get_now_windows_subms(void); -#endif -#if defined(DUK_USE_DATE_TZO_GMTIME_R) || defined(DUK_USE_DATE_TZO_GMTIME_S) || defined(DUK_USE_DATE_TZO_GMTIME) -DUK_INTERNAL_DECL duk_int_t duk_bi_date_get_local_tzoffset_gmtime(duk_double_t d); -#endif -#if defined(DUK_USE_DATE_TZO_WINDOWS) -DUK_INTERNAL_DECL duk_int_t duk_bi_date_get_local_tzoffset_windows(duk_double_t d); -#endif -#if defined(DUK_USE_DATE_TZO_WINDOWS_NO_DST) -DUK_INTERNAL_DECL duk_int_t duk_bi_date_get_local_tzoffset_windows_no_dst(duk_double_t d); -#endif -#if defined(DUK_USE_DATE_PRS_STRPTIME) -DUK_INTERNAL_DECL duk_bool_t duk_bi_date_parse_string_strptime(duk_hthread *thr, const char *str); -#endif -#if defined(DUK_USE_DATE_PRS_GETDATE) -DUK_INTERNAL_DECL duk_bool_t duk_bi_date_parse_string_getdate(duk_hthread *thr, const char *str); -#endif -#if defined(DUK_USE_DATE_FMT_STRFTIME) -DUK_INTERNAL_DECL duk_bool_t duk_bi_date_format_parts_strftime(duk_hthread *thr, - duk_int_t *parts, - duk_int_t tzoffset, - duk_small_uint_t flags); -#endif - -#if defined(DUK_USE_GET_MONOTONIC_TIME_CLOCK_GETTIME) -DUK_INTERNAL_DECL duk_double_t duk_bi_date_get_monotonic_time_clock_gettime(void); -#endif -#if defined(DUK_USE_GET_MONOTONIC_TIME_WINDOWS_QPC) -DUK_INTERNAL_DECL duk_double_t duk_bi_date_get_monotonic_time_windows_qpc(void); -#endif - -DUK_INTERNAL_DECL -void duk_bi_json_parse_helper(duk_hthread *thr, duk_idx_t idx_value, duk_idx_t idx_reviver, duk_small_uint_t flags); -DUK_INTERNAL_DECL -void duk_bi_json_stringify_helper(duk_hthread *thr, - duk_idx_t idx_value, - duk_idx_t idx_replacer, - duk_idx_t idx_space, - duk_small_uint_t flags); - -DUK_INTERNAL_DECL duk_ret_t duk_textdecoder_decode_utf8_nodejs(duk_hthread *thr); - -#if defined(DUK_USE_ES6_PROXY) -DUK_INTERNAL_DECL void duk_proxy_ownkeys_postprocess(duk_hthread *thr, duk_hobject *h_proxy_target, duk_uint_t flags); -#endif - -#endif /* DUK_BUILTIN_PROTOS_H_INCLUDED */ -/* #include duk_selftest.h */ -#line 1 "duk_selftest.h" -/* - * Selftest code - */ - -#if !defined(DUK_SELFTEST_H_INCLUDED) -#define DUK_SELFTEST_H_INCLUDED - -#if defined(DUK_USE_SELF_TESTS) -DUK_INTERNAL_DECL duk_uint_t duk_selftest_run_tests(duk_alloc_function alloc_func, - duk_realloc_function realloc_func, - duk_free_function free_func, - void *udata); -#endif - -#endif /* DUK_SELFTEST_H_INCLUDED */ -#line 76 "duk_internal.h" - -#endif /* DUK_INTERNAL_H_INCLUDED */ -#line 10 "duk_replacements.c" - -#if defined(DUK_USE_COMPUTED_NAN) -DUK_INTERNAL double duk_computed_nan; -#endif - -#if defined(DUK_USE_COMPUTED_INFINITY) -DUK_INTERNAL double duk_computed_infinity; -#endif - -#if defined(DUK_USE_REPL_FPCLASSIFY) -DUK_INTERNAL int duk_repl_fpclassify(double x) { - duk_double_union u; - duk_uint_fast16_t expt; - duk_small_int_t mzero; - - u.d = x; - expt = (duk_uint_fast16_t) (u.us[DUK_DBL_IDX_US0] & 0x7ff0UL); - if (expt > 0x0000UL && expt < 0x7ff0UL) { - /* expt values [0x001,0x7fe] = normal */ - return DUK_FP_NORMAL; - } - - mzero = (u.ui[DUK_DBL_IDX_UI1] == 0 && (u.ui[DUK_DBL_IDX_UI0] & 0x000fffffUL) == 0); - if (expt == 0x0000UL) { - /* expt 0x000 is zero/subnormal */ - if (mzero) { - return DUK_FP_ZERO; - } else { - return DUK_FP_SUBNORMAL; - } - } else { - /* expt 0xfff is infinite/nan */ - if (mzero) { - return DUK_FP_INFINITE; - } else { - return DUK_FP_NAN; - } - } -} -#endif - -#if defined(DUK_USE_REPL_SIGNBIT) -DUK_INTERNAL int duk_repl_signbit(double x) { - duk_double_union u; - u.d = x; - return (int) (u.uc[DUK_DBL_IDX_UC0] & 0x80UL); -} -#endif - -#if defined(DUK_USE_REPL_ISFINITE) -DUK_INTERNAL int duk_repl_isfinite(double x) { - int c = DUK_FPCLASSIFY(x); - if (c == DUK_FP_NAN || c == DUK_FP_INFINITE) { - return 0; - } else { - return 1; - } -} -#endif - -#if defined(DUK_USE_REPL_ISNAN) -DUK_INTERNAL int duk_repl_isnan(double x) { - int c = DUK_FPCLASSIFY(x); - return (c == DUK_FP_NAN); -} -#endif - -#if defined(DUK_USE_REPL_ISINF) -DUK_INTERNAL int duk_repl_isinf(double x) { - int c = DUK_FPCLASSIFY(x); - return (c == DUK_FP_INFINITE); -} -#endif -#line 1 "duk_debug_macros.c" -/* - * Debugging macro calls. - */ - -/* #include duk_internal.h -> already included */ - -#if defined(DUK_USE_DEBUG) - -/* - * Debugging enabled - */ - -#include -#include -#include - -#if !defined(DUK_USE_DEBUG_WRITE) -#error debugging enabled (DUK_USE_DEBUG) but DUK_USE_DEBUG_WRITE not defined -#endif - -#define DUK__DEBUG_BUFSIZE DUK_USE_DEBUG_BUFSIZE - -#if defined(DUK_USE_VARIADIC_MACROS) - -DUK_INTERNAL void duk_debug_log(duk_int_t level, const char *file, duk_int_t line, const char *func, const char *fmt, ...) { - va_list ap; - long arg_level; - const char *arg_file; - long arg_line; - const char *arg_func; - const char *arg_msg; - char buf[DUK__DEBUG_BUFSIZE]; - - va_start(ap, fmt); - - duk_memzero((void *) buf, (size_t) DUK__DEBUG_BUFSIZE); - duk_debug_vsnprintf(buf, DUK__DEBUG_BUFSIZE - 1, fmt, ap); - - arg_level = (long) level; - arg_file = (const char *) file; - arg_line = (long) line; - arg_func = (const char *) func; - arg_msg = (const char *) buf; - DUK_USE_DEBUG_WRITE(arg_level, arg_file, arg_line, arg_func, arg_msg); - - va_end(ap); -} - -#else /* DUK_USE_VARIADIC_MACROS */ - -DUK_INTERNAL char duk_debug_file_stash[DUK_DEBUG_STASH_SIZE]; -DUK_INTERNAL duk_int_t duk_debug_line_stash; -DUK_INTERNAL char duk_debug_func_stash[DUK_DEBUG_STASH_SIZE]; -DUK_INTERNAL duk_int_t duk_debug_level_stash; - -DUK_INTERNAL void duk_debug_log(const char *fmt, ...) { - va_list ap; - long arg_level; - const char *arg_file; - long arg_line; - const char *arg_func; - const char *arg_msg; - char buf[DUK__DEBUG_BUFSIZE]; - - va_start(ap, fmt); - - duk_memzero((void *) buf, (size_t) DUK__DEBUG_BUFSIZE); - duk_debug_vsnprintf(buf, DUK__DEBUG_BUFSIZE - 1, fmt, ap); - - arg_level = (long) duk_debug_level_stash; - arg_file = (const char *) duk_debug_file_stash; - arg_line = (long) duk_debug_line_stash; - arg_func = (const char *) duk_debug_func_stash; - arg_msg = (const char *) buf; - DUK_USE_DEBUG_WRITE(arg_level, arg_file, arg_line, arg_func, arg_msg); - - va_end(ap); -} - -#endif /* DUK_USE_VARIADIC_MACROS */ - -#else /* DUK_USE_DEBUG */ - -/* - * Debugging disabled - */ - -#endif /* DUK_USE_DEBUG */ - -/* automatic undefs */ -#undef DUK__DEBUG_BUFSIZE -#line 1 "duk_builtins.c" -/* - * Automatically generated by genbuiltins.py, do not edit! - */ - -/* #include duk_internal.h -> already included */ - -#if defined(DUK_USE_ASSERTIONS) -#define DUK__REFCINIT(refc) 0 /*h_assert_refcount*/, (refc) /*actual*/ -#else -#define DUK__REFCINIT(refc) (refc) /*actual*/ -#endif - -#if defined(DUK_USE_ROM_STRINGS) -#error ROM support not enabled, rerun configure.py with --rom-support -#else /* DUK_USE_ROM_STRINGS */ -DUK_INTERNAL const duk_uint8_t duk_strings_data[972] = { -79,40,209,144,168,105,6,78,54,139,89,185,44,48,46,90,120,8,154,140,35,103, -35,113,193,73,5,52,112,180,104,166,135,52,188,4,98,12,27,146,156,80,211,31, -129,115,150,64,52,220,109,24,18,68,156,24,38,67,114,36,55,9,119,151,132, -140,93,18,113,128,153,201,212,201,205,2,248,8,196,24,224,104,82,146,40,224, -193,48,114,168,37,147,196,54,123,28,4,98,12,43,148,67,103,177,192,70,32, -196,121,68,54,123,28,18,192,199,144,124,4,98,12,43,136,108,244,117,184,8, -196,24,95,40,134,207,71,91,128,140,65,133,113,13,158,158,151,1,24,131,11, -229,16,217,233,233,112,17,136,48,206,21,110,4,244,244,184,8,196,24,103,10, -183,2,122,218,156,4,98,12,24,203,112,64,179,113,193,79,8,218,155,131,32, -184,70,212,220,13,10,82,68,252,123,144,217,146,38,228,207,18,0,100,37,64, -178,212,11,161,17,104,162,96,10,200,193,57,165,65,169,16,5,100,81,27,70,18, -32,10,200,68,185,13,116,221,197,184,64,89,57,41,197,13,49,234,5,208,156, -113,87,55,118,147,20,187,56,161,166,92,221,212,73,210,236,226,134,153,115, -119,76,201,203,179,138,26,99,73,212,136,136,164,25,174,137,56,32,72,137, -101,23,52,45,13,34,86,9,79,136,104,201,114,149,96,52,138,134,140,151,75, -226,233,186,120,121,22,39,54,83,141,5,55,68,236,36,164,3,16,225,115,150,64, -52,205,163,2,72,154,83,138,26,99,75,12,11,150,103,5,36,20,211,70,140,133, -67,72,49,241,160,227,81,196,52,168,106,39,132,252,183,136,105,80,212,79,2, -249,110,128,126,88,95,133,109,237,237,237,151,235,127,46,249,119,203,190, -186,206,33,181,2,208,61,190,12,19,34,65,19,81,132,108,228,97,1,107,33,12, -32,45,100,137,64,247,175,9,19,155,41,198,130,155,134,69,146,100,227,226, -231,146,51,192,204,73,140,224,145,221,102,241,68,196,169,248,30,75,12,11, -151,242,233,187,143,138,24,137,162,164,255,253,63,3,201,97,129,114,254,92, -112,75,136,108,166,6,136,159,255,167,224,121,44,48,46,95,203,166,238,74, -113,67,77,201,128,223,255,223,224,121,44,48,46,95,203,145,46,9,205,16,39, -201,62,36,0,192,21,147,255,238,145,39,199,197,211,116,240,242,113,197,78, -214,211,226,233,187,107,105,19,119,37,56,161,166,52,221,212,201,205,36,240, -242,16,96,152,12,26,20,164,137,150,70,154,103,28,137,50,202,96,18,132,241, -41,104,105,56,218,48,36,138,183,57,56,128,68,24,38,2,52,12,34,10,133,147, -141,3,8,119,185,13,153,34,125,206,76,17,49,38,93,206,52,151,154,119,56,28, -76,130,112,200,141,206,21,209,96,23,35,238,114,160,139,0,243,238,114,78, -164,68,68,110,113,226,210,90,26,66,110,113,128,121,247,57,80,68,141,170, -183,56,84,52,11,70,73,19,110,114,160,93,8,113,57,143,66,200,84,53,244,154, -73,24,240,81,32,38,68,18,49,228,207,23,88,100,109,70,114,92,193,4,137,173, -168,36,220,73,19,247,247,182,168,209,144,187,223,58,156,104,79,190,183,127, -123,105,160,110,247,206,167,26,19,239,173,223,222,218,67,75,189,243,169, -198,132,251,235,183,247,182,154,134,151,123,231,83,141,9,247,215,111,239, -109,22,141,22,247,206,167,26,19,239,172,223,218,45,26,47,157,78,52,39,223, -74,24,144,10,32,129,34,20,64,152,142,129,57,179,67,104,68,12,129,161,140, -72,156,100,40,40,185,152,100,89,38,65,13,196,34,228,67,149,13,2,215,129, -149,209,65,104,209,77,14,104,144,81,33,170,67,101,48,52,68,113,70,210,88, -209,36,233,22,154,86,68,196,114,76,232,145,102,120,186,195,156,112,105,225, -228,113,71,80,68,162,115,101,50,85,200,25,108,116,44,132,178,38,114,137,96, -148,136,70,209,134,37,222,232,204,228,188,200,209,200,200,99,221,25,150,84, -121,34,70,209,107,36,227,66,20,160,92,136,164,49,235,35,8,217,201,40,108, -201,18,128,68,26,201,51,188,2,80,12,67,190,40,168,38,68,190,46,153,5,50,12, -207,160,86,129,26,83,4,208,34,225,4,88,192, -}; -#endif /* DUK_USE_ROM_STRINGS */ - -#if defined(DUK_USE_ROM_OBJECTS) -#error ROM support not enabled, rerun configure.py with --rom-support -#else /* DUK_USE_ROM_OBJECTS */ -/* native functions: 185 */ -DUK_INTERNAL const duk_c_function duk_bi_native_functions[185] = { - NULL, - duk_bi_array_constructor, - duk_bi_array_constructor_is_array, - duk_bi_array_prototype_concat, - duk_bi_array_prototype_indexof_shared, - duk_bi_array_prototype_iter_shared, - duk_bi_array_prototype_join_shared, - duk_bi_array_prototype_pop, - duk_bi_array_prototype_push, - duk_bi_array_prototype_reduce_shared, - duk_bi_array_prototype_reverse, - duk_bi_array_prototype_shift, - duk_bi_array_prototype_slice, - duk_bi_array_prototype_sort, - duk_bi_array_prototype_splice, - duk_bi_array_prototype_to_string, - duk_bi_array_prototype_unshift, - duk_bi_arraybuffer_constructor, - duk_bi_arraybuffer_isview, - duk_bi_boolean_constructor, - duk_bi_boolean_prototype_tostring_shared, - duk_bi_buffer_compare_shared, - duk_bi_buffer_readfield, - duk_bi_buffer_slice_shared, - duk_bi_buffer_writefield, - duk_bi_cbor_decode, - duk_bi_cbor_encode, - duk_bi_dataview_constructor, - duk_bi_date_constructor, - duk_bi_date_constructor_now, - duk_bi_date_constructor_parse, - duk_bi_date_constructor_utc, - duk_bi_date_prototype_get_shared, - duk_bi_date_prototype_get_timezone_offset, - duk_bi_date_prototype_set_shared, - duk_bi_date_prototype_set_time, - duk_bi_date_prototype_to_json, - duk_bi_date_prototype_toprimitive, - duk_bi_date_prototype_tostring_shared, - duk_bi_date_prototype_value_of, - duk_bi_duktape_object_act, - duk_bi_duktape_object_compact, - duk_bi_duktape_object_dec, - duk_bi_duktape_object_enc, - duk_bi_duktape_object_fin, - duk_bi_duktape_object_gc, - duk_bi_duktape_object_info, - duk_bi_error_constructor_shared, - duk_bi_error_prototype_filename_getter, - duk_bi_error_prototype_filename_setter, - duk_bi_error_prototype_linenumber_getter, - duk_bi_error_prototype_linenumber_setter, - duk_bi_error_prototype_stack_getter, - duk_bi_error_prototype_stack_setter, - duk_bi_error_prototype_to_string, - duk_bi_function_constructor, - duk_bi_function_prototype, - duk_bi_function_prototype_apply, - duk_bi_function_prototype_bind, - duk_bi_function_prototype_call, - duk_bi_function_prototype_hasinstance, - duk_bi_function_prototype_to_string, - duk_bi_global_object_decode_uri, - duk_bi_global_object_decode_uri_component, - duk_bi_global_object_encode_uri, - duk_bi_global_object_encode_uri_component, - duk_bi_global_object_escape, - duk_bi_global_object_eval, - duk_bi_global_object_is_finite, - duk_bi_global_object_is_nan, - duk_bi_global_object_parse_float, - duk_bi_global_object_parse_int, - duk_bi_global_object_unescape, - duk_bi_json_object_parse, - duk_bi_json_object_stringify, - duk_bi_math_object_clz32, - duk_bi_math_object_hypot, - duk_bi_math_object_imul, - duk_bi_math_object_max, - duk_bi_math_object_min, - duk_bi_math_object_onearg_shared, - duk_bi_math_object_random, - duk_bi_math_object_sign, - duk_bi_math_object_twoarg_shared, - duk_bi_native_function_length, - duk_bi_native_function_name, - duk_bi_nodejs_buffer_byte_length, - duk_bi_nodejs_buffer_concat, - duk_bi_nodejs_buffer_constructor, - duk_bi_nodejs_buffer_copy, - duk_bi_nodejs_buffer_fill, - duk_bi_nodejs_buffer_is_buffer, - duk_bi_nodejs_buffer_is_encoding, - duk_bi_nodejs_buffer_tojson, - duk_bi_nodejs_buffer_tostring, - duk_bi_nodejs_buffer_write, - duk_bi_number_check_shared, - duk_bi_number_constructor, - duk_bi_number_prototype_to_exponential, - duk_bi_number_prototype_to_fixed, - duk_bi_number_prototype_to_locale_string, - duk_bi_number_prototype_to_precision, - duk_bi_number_prototype_to_string, - duk_bi_number_prototype_value_of, - duk_bi_object_constructor, - duk_bi_object_constructor_assign, - duk_bi_object_constructor_create, - duk_bi_object_constructor_define_properties, - duk_bi_object_constructor_define_property, - duk_bi_object_constructor_get_own_property_descriptor, - duk_bi_object_constructor_is, - duk_bi_object_constructor_is_extensible, - duk_bi_object_constructor_is_sealed_frozen_shared, - duk_bi_object_constructor_keys_shared, - duk_bi_object_constructor_prevent_extensions, - duk_bi_object_constructor_seal_freeze_shared, - duk_bi_object_getprototype_shared, - duk_bi_object_prototype_defineaccessor, - duk_bi_object_prototype_has_own_property, - duk_bi_object_prototype_is_prototype_of, - duk_bi_object_prototype_lookupaccessor, - duk_bi_object_prototype_property_is_enumerable, - duk_bi_object_prototype_to_locale_string, - duk_bi_object_prototype_to_string, - duk_bi_object_prototype_value_of, - duk_bi_object_setprototype_shared, - duk_bi_performance_now, - duk_bi_pointer_constructor, - duk_bi_pointer_prototype_tostring_shared, - duk_bi_proxy_constructor, - duk_bi_reflect_apply, - duk_bi_reflect_construct, - duk_bi_reflect_object_delete_property, - duk_bi_reflect_object_get, - duk_bi_reflect_object_has, - duk_bi_reflect_object_set, - duk_bi_regexp_constructor, - duk_bi_regexp_prototype_exec, - duk_bi_regexp_prototype_flags, - duk_bi_regexp_prototype_shared_getter, - duk_bi_regexp_prototype_test, - duk_bi_regexp_prototype_tostring, - duk_bi_string_constructor, - duk_bi_string_constructor_from_char_code, - duk_bi_string_constructor_from_code_point, - duk_bi_string_prototype_caseconv_shared, - duk_bi_string_prototype_char_at, - duk_bi_string_prototype_char_code_at, - duk_bi_string_prototype_concat, - duk_bi_string_prototype_includes, - duk_bi_string_prototype_indexof_shared, - duk_bi_string_prototype_locale_compare, - duk_bi_string_prototype_match, - duk_bi_string_prototype_repeat, - duk_bi_string_prototype_replace, - duk_bi_string_prototype_search, - duk_bi_string_prototype_slice, - duk_bi_string_prototype_split, - duk_bi_string_prototype_startswith_endswith, - duk_bi_string_prototype_substr, - duk_bi_string_prototype_substring, - duk_bi_string_prototype_to_string, - duk_bi_string_prototype_trim, - duk_bi_symbol_constructor_shared, - duk_bi_symbol_key_for, - duk_bi_symbol_toprimitive, - duk_bi_symbol_tostring_shared, - duk_bi_textdecoder_constructor, - duk_bi_textdecoder_prototype_decode, - duk_bi_textdecoder_prototype_shared_getter, - duk_bi_textencoder_constructor, - duk_bi_textencoder_prototype_encode, - duk_bi_textencoder_prototype_encoding_getter, - duk_bi_thread_constructor, - duk_bi_thread_current, - duk_bi_thread_resume, - duk_bi_thread_yield, - duk_bi_type_error_thrower, - duk_bi_typedarray_buffer_getter, - duk_bi_typedarray_bytelength_getter, - duk_bi_typedarray_byteoffset_getter, - duk_bi_typedarray_constructor, - duk_bi_typedarray_set, - duk_bi_uint8array_allocplain, - duk_bi_uint8array_plainof, -}; -#if defined(DUK_USE_DOUBLE_LE) -DUK_INTERNAL const duk_uint8_t duk_builtins_data[4281] = { -144,148,105,226,32,68,52,228,254,12,104,202,37,132,52,167,194,138,105,245, -124,57,28,211,57,18,64,52,239,126,44,138,111,175,241,164,19,87,145,30,33, -167,22,145,159,8,211,139,9,225,42,5,240,145,139,163,163,8,211,139,10,228, -64,211,19,132,140,93,29,56,70,156,88,119,34,66,146,36,104,137,194,70,46, -142,172,35,78,44,47,146,195,102,11,240,145,139,163,175,8,211,139,9,228,240, -242,112,145,139,163,179,8,211,139,8,237,34,130,118,49,116,118,225,26,48,0, -1,98,29,201,158,46,183,39,135,147,132,140,93,16,132,76,66,33,8,66,16,132, -33,8,66,26,180,105,97,167,68,150,34,33,154,112,0,1,91,247,35,79,111,237, -198,174,232,47,31,23,95,17,13,31,249,96,211,49,50,53,214,77,141,24,0,0,181, -10,228,240,242,15,128,140,65,128,134,188,0,0,90,167,97,181,224,0,2,213,62, -53,224,0,2,213,66,237,120,0,0,181,81,204,107,192,0,5,170,150,67,94,0,0,45, -84,245,90,240,0,1,106,169,162,215,128,0,11,85,93,150,188,0,0,90,171,111,53, -109,22,162,26,48,0,1,84,23,201,146,243,225,26,39,12,145,136,104,192,0,5,61, -11,228,201,121,240,100,19,134,72,196,33,195,14,40,203,112,64,190,76,232, -145,153,136,0,0,0,0,0,0,31,15,249,152,0,0,0,0,0,0,30,15,249,120,144,13,96, -155,194,56,80,206,36,67,141,20,228,70,57,81,206,100,131,156,39,132,168,23, -194,70,46,137,208,21,200,129,166,39,9,24,186,39,72,119,34,66,146,36,104, -137,194,70,46,137,212,23,201,97,179,5,248,72,197,209,58,194,121,60,60,156, -36,98,232,157,129,29,164,80,78,198,46,137,218,146,121,25,71,146,9,209,5, -209,61,48,126,14,138,152,30,67,186,23,143,139,175,131,202,135,228,72,85, -144,83,60,179,30,94,209,233,102,30,98,105,230,103,30,114,121,231,104,30, -122,137,231,233,30,130,153,232,106,30,138,169,232,235,30,144,67,193,25,19, -136,108,207,30,41,224,140,137,194,173,192,153,228,5,242,100,188,248,70,137, -195,36,79,78,47,147,37,231,193,144,78,25,34,122,145,111,36,74,232,176,13, -17,61,234,226,93,207,148,160,84,75,141,7,27,161,32,33,18,225,80,212,76,154, -2,2,70,65,56,100,237,34,140,209,2,67,32,156,50,118,145,64,186,230,61,205, -35,103,155,32,36,141,19,134,78,210,40,206,16,36,70,137,195,39,105,20,11, -174,99,220,210,54,121,210,1,137,33,1,228,207,16,17,70,146,66,3,201,164,32, -0,65,112,152,56,196,159,31,23,77,211,195,201,199,23,160,72,214,246,81,6,12, -73,241,214,111,31,23,60,145,158,56,50,72,81,67,230,232,242,80,19,49,39,199, -89,188,124,92,242,70,120,227,64,194,75,154,72,12,9,73,6,111,21,120,12,40, -144,19,39,25,0,225,144,168,105,56,248,185,228,140,241,200,96,64,100,42,26, -78,62,46,121,35,52,18,92,116,1,36,64,47,158,64,49,98,66,100,156,242,65,23, -196,149,35,103,194,94,100,108,144,230,203,156,64,66,37,201,16,11,32,249, -132,4,34,92,44,93,146,55,152,72,24,137,112,151,153,27,36,5,100,229,144,8, -162,98,92,210,5,76,73,241,214,111,31,23,60,145,158,57,44,48,46,92,185,164, -160,72,151,41,0,50,107,179,244,59,36,93,127,92,6,19,172,3,11,216,0,56,224, -151,29,102,241,241,115,201,25,227,164,64,106,37,199,197,211,116,240,242, -113,197,233,144,40,248,185,228,140,241,196,75,132,109,24,72,128,43,39,84, -129,13,173,161,144,168,105,56,98,78,100,142,214,215,69,1,13,173,161,144, -168,105,57,34,78,100,142,214,215,69,16,67,107,105,110,114,168,254,24,147, -153,35,181,181,212,32,67,107,105,110,114,168,254,72,147,153,35,181,181,212, -36,65,130,3,144,8,26,252,200,13,30,85,16,16,64,90,242,231,192,64,161,163, -203,31,26,172,193,17,4,23,105,159,96,27,172,251,16,32,196,4,14,137,112,17, -136,48,164,28,134,80,215,202,1,132,130,8,12,39,52,64,155,31,24,56,36,1,189, -207,132,0,35,233,35,195,62,3,196,149,36,100,72,160,2,200,232,44,227,0,11, -37,160,68,142,128,36,157,25,200,32,26,79,90,4,73,43,192,122,54,71,65,103, -44,248,14,134,140,151,227,138,231,208,45,96,148,248,134,140,151,227,138, -231,240,1,255,254,10,74,146,56,128,104,4,147,152,72,6,144,28,174,143,8,1, -30,1,165,3,96,31,0,211,3,21,11,153,35,0,211,131,68,131,160,137,16,250,5, -196,131,160,137,200,160,199,156,67,248,0,255,255,65,140,10,48,177,115,56, -35,130,60,19,134,79,89,240,52,177,115,56,39,12,156,123,144,217,251,15,135, -34,167,30,20,170,154,255,232,12,47,244,0,97,28,17,224,39,238,32,40,71,4, -120,39,12,156,4,253,228,5,137,195,39,30,228,54,124,4,253,228,128,194,115, -68,9,252,15,128,232,104,201,126,56,191,35,64,90,193,41,241,13,25,47,199,23, -228,105,3,86,225,1,100,224,156,199,130,36,249,144,10,192,76,71,250,16,15, -18,61,96,17,62,200,3,72,128,136,143,247,32,22,75,64,137,248,64,22,79,90,39, -249,64,38,84,12,167,20,52,223,196,2,230,238,45,214,36,120,32,72,158,208,4, -102,238,45,194,2,201,197,186,196,143,4,9,19,218,0,92,221,202,61,228,143,4, -9,19,218,8,35,55,113,110,16,22,78,81,239,36,120,32,72,158,208,64,73,197,12, -255,0,13,18,60,128,159,212,128,169,76,17,156,185,100,76,255,163,64,65,26, -57,114,200,153,255,70,144,33,13,18,232,50,75,226,104,6,149,3,41,199,246, -130,12,128,28,142,156,120,203,175,158,8,194,207,1,6,81,20,79,88,11,237,84, -11,161,32,127,255,255,255,255,255,247,191,137,235,16,221,170,129,116,36,0, -16,0,0,0,0,0,0,12,196,0,0,0,0,0,0,15,135,242,61,123,164,137,162,164,218,67, -74,134,162,120,128,0,0,0,0,0,1,224,254,71,173,33,129,52,84,155,72,105,80, -212,79,16,0,0,0,0,0,0,60,63,195,244,143,146,22,230,192,0,0,0,0,0,0,176,60, -33,214,2,251,82,1,73,180,134,204,134,36,96,127,255,255,255,255,255,159,161, -144,235,16,221,169,0,164,218,67,102,67,18,48,63,255,255,255,255,255,207, -240,196,60,17,145,56,134,204,241,226,158,8,200,156,42,220,9,158,65,196,34, -92,42,26,137,147,120,64,74,37,196,54,100,49,35,188,36,5,68,184,208,113,187, -194,80,212,75,146,1,73,196,54,100,49,35,188,38,57,37,56,240,0,0,0,0,0,0,0, -0,32,235,248,68,48,156,2,24,94,24,0,243,119,10,139,144,123,242,3,102,238, -18,239,115,72,217,160,11,223,16,23,55,113,241,32,145,36,57,188,18,16,102,3, -5,120,35,34,89,32,15,180,152,173,127,0,218,235,88,0,228,180,227,200,0,0,0, -0,0,0,248,127,197,107,240,64,6,77,220,24,38,78,74,113,67,77,130,4,12,155, -185,52,48,156,148,226,134,155,4,10,194,96,129,132,166,238,45,194,2,201,193, -130,100,228,167,20,52,216,32,113,41,187,139,112,128,178,114,104,97,57,41, -197,13,54,8,32,48,216,32,130,195,224,130,19,97,124,134,23,6,0,57,137,62,77, -12,38,12,0,179,18,124,45,22,190,96,128,141,176,134,28,98,79,180,152,139, -218,45,124,193,1,27,97,16,32,196,159,24,230,204,246,194,40,89,137,62,210, -98,103,92,217,158,216,70,7,49,39,193,130,100,182,17,194,140,73,246,147,16, -250,9,146,216,72,6,49,39,193,131,22,194,72,73,137,62,210,98,31,65,139,97, -40,32,196,159,14,234,70,86,194,88,89,137,62,210,98,63,93,72,202,216,76,10, -49,39,198,33,180,153,37,108,38,134,152,147,237,38,38,117,13,164,201,43,97, -56,40,196,159,36,65,57,163,149,176,158,26,98,79,180,152,165,210,9,205,28, -173,133,0,243,18,124,98,22,180,72,130,115,71,43,97,68,72,196,159,105,49,51, -168,90,209,34,9,205,28,173,133,33,19,18,124,154,24,76,185,164,227,138,89, -18,119,0,7,145,39,201,161,132,188,64,124,137,62,49,11,90,36,65,57,163,149, -210,166,37,34,79,180,152,153,212,45,104,145,4,230,142,87,74,160,84,137,62, -72,130,115,71,43,171,234,134,200,147,237,38,41,116,130,115,71,43,171,235,5, -72,147,227,16,218,76,146,186,254,184,108,137,62,210,98,103,80,218,76,146, -186,254,192,68,137,62,29,212,140,174,207,178,23,34,79,180,152,143,215,82, -50,187,62,208,60,137,62,12,19,37,210,182,21,34,79,180,152,135,208,76,151, -74,224,68,137,62,49,205,153,238,175,186,23,34,79,180,152,153,215,54,103, -186,190,240,92,137,62,22,139,95,48,64,70,235,251,225,210,36,251,73,136,189, -162,215,204,16,17,186,255,2,14,98,79,152,32,35,108,48,64,242,36,249,130,2, -55,75,6,212,224,72,200,51,128,114,108,28,100,128,0,0,0,0,0,0,0,12,110,127, -48,98,115,249,201,117,243,249,195,21,159,206,38,47,63,156,86,8,75,144,94, -82,1,38,73,79,208,67,95,233,1,6,128,14,79,129,186,40,249,18,149,182,207, -144,200,155,188,248,204,105,184,207,142,199,137,175,201,0,159,72,10,5,21, -221,10,120,74,129,124,36,98,232,228,74,81,62,160,20,10,107,186,21,114,32, -105,137,194,70,46,142,68,165,19,235,1,64,170,187,161,119,34,66,146,36,104, -137,194,70,46,142,68,165,19,236,1,64,174,187,161,95,37,134,204,23,225,35, -23,71,34,82,137,246,128,160,89,93,208,167,147,195,201,194,70,46,142,68,165, -19,238,1,64,182,187,161,71,105,20,19,177,139,163,145,41,68,16,7,6,15,82,70, -72,115,96,0,0,0,0,0,27,234,32,91,60,165,195,201,194,8,134,149,216,162,0, -192,41,225,8,2,48,177,36,1,149,13,196,15,0,200,209,97,199,128,99,32,176, -195,192,113,57,143,0,167,133,32,230,80,28,202,139,175,238,2,48,189,192,20, -1,119,80,87,193,186,129,89,56,72,197,209,200,193,185,35,23,71,109,13,219, -36,98,232,237,156,13,26,208,211,14,102,19,87,137,91,95,128,0,10,96,24,92,0, -0,83,2,53,56,0,0,165,3,28,204,160,160,226,100,226,200,211,76,241,240,0,1, -102,8,22,75,64,137,73,20,230,105,133,7,19,39,22,70,154,103,143,128,0,11,48, -20,28,76,156,113,75,34,78,62,0,0,45,3,103,31,0,0,22,65,44,57,137,62,33,179, -216,162,152,192,131,18,124,162,27,61,138,41,108,32,196,159,16,217,232,235, -81,76,104,73,137,62,81,13,158,142,181,20,184,16,98,79,136,108,244,244,168, -166,56,36,196,159,40,134,207,79,74,138,93,10,49,39,194,173,192,158,158,149, -20,188,20,98,79,133,91,129,61,109,74,41,124,30,68,159,16,217,236,83,108,96, -68,137,62,81,13,158,197,54,182,17,34,79,136,108,244,117,169,182,52,38,68, -159,40,134,207,71,90,155,92,8,145,39,196,54,122,122,84,219,28,19,34,79,148, -67,103,167,165,77,174,133,72,147,225,86,224,79,79,74,155,94,10,145,39,194, -173,192,158,182,165,54,190,206,25,212,35,208,226,100,150,211,201,29,162,44, -140,35,103,0,0,0,0,0,0,3,192,252,206,25,228,35,208,226,100,150,211,201,29, -162,44,140,35,103,0,0,0,0,0,0,3,192,252,206,25,244,35,208,226,100,150,211, -201,29,162,44,140,35,103,0,0,0,0,0,0,3,192,252,206,26,4,35,208,226,100,150, -211,201,29,162,44,140,35,103,0,0,0,0,0,0,0,1,0,206,26,20,35,208,226,100, -150,211,201,29,162,44,140,35,103,0,0,0,0,0,0,0,1,0,206,26,36,35,208,226, -100,150,211,201,29,162,44,140,35,103,0,0,0,0,0,0,0,65,0,206,26,52,35,208, -226,100,150,211,201,29,162,44,140,35,103,0,0,0,0,0,0,0,65,0,206,26,68,35, -208,226,100,150,211,201,29,162,44,140,35,103,0,0,0,0,0,0,0,65,0,206,26,84, -35,208,226,100,150,211,201,29,162,44,140,35,103,0,0,0,0,0,0,0,129,0,195, -154,99,16,38,36,0,251,68,117,179,216,162,128,68,72,1,241,13,158,197,20,150, -25,18,0,125,162,58,217,232,235,117,100,162,136,25,18,0,125,162,58,217,232, -235,116,36,162,145,2,226,64,15,136,108,244,117,186,178,81,73,129,113,32,7, -196,54,122,58,221,9,40,165,64,200,144,3,237,17,214,207,79,75,171,37,20,80, -200,144,3,237,17,214,207,79,75,161,37,20,138,23,18,0,124,67,103,167,165, -213,146,138,77,11,137,0,62,33,179,211,210,232,73,69,42,133,196,128,31,10, -183,2,125,89,40,163,5,196,128,31,10,183,2,125,9,40,164,96,200,144,3,224, -221,64,172,157,89,40,163,134,68,128,31,6,234,5,100,232,73,69,35,133,68,128, -31,104,142,182,125,89,40,180,0,168,144,3,237,17,214,207,161,37,22,144,19, -18,0,124,67,103,213,146,139,80,9,137,0,62,33,179,232,73,69,172,5,90,40,153, -59,68,117,179,216,166,192,77,162,137,147,136,108,246,41,180,176,219,69,19, -39,104,142,182,122,58,221,89,41,178,6,218,40,153,59,68,117,179,209,214,232, -73,77,162,6,90,40,153,56,134,207,71,91,171,37,54,152,25,104,162,100,226,27, -61,29,110,132,148,218,160,109,162,137,147,180,71,91,61,61,46,172,148,217, -67,109,20,76,157,162,58,217,233,233,116,36,166,209,67,45,20,76,156,67,103, -167,165,213,146,155,77,12,180,81,50,113,13,158,158,151,66,74,109,84,50,209, -68,201,194,173,192,159,86,74,108,193,150,138,38,78,21,110,4,250,18,83,104, -193,182,138,38,78,13,212,10,201,213,146,155,56,109,162,137,147,131,117,2, -178,116,36,166,209,194,237,20,76,157,162,58,217,245,100,167,16,2,237,20,76, -157,162,58,217,244,36,167,18,2,173,20,76,156,67,103,213,146,156,80,10,180, -81,50,113,13,159,66,74,113,97,175,221,48,216,110,64,4,42,22,189,179,0,196, -133,0,185,80,32,28,78,99,193,18,80,36,4,19,159,141,172,0,178,90,4,74,73,0, -22,209,68,201,187,129,4,2,8,3,132,64,60,36,6,149,113,72,176,171,240,84,0, -157,91,116,116,32,11,42,218,221,216,181,129,32,3,234,219,165,3,188,231,235, -249,8,187,152,252,47,86,227,105,18,7,244,17,91,42,56,175,185,248,110,173, -198,209,208,36,0,238,82,97,87,188,189,179,240,93,122,32,12,22,162,42,125, -144,132,160,7,236,161,25,232,237,105,64,205,59,127,102,158,160,230,63,11, -217,66,51,210,129,154,118,254,205,61,65,236,127,171,197,34,168,48,6,90,194, -1,0,39,75,88,72,8,9,33,186,194,80,64,76,13,214,19,2,130,96,110,150,189,0, -65,6,51,214,20,128,65,17,11,214,19,130,137,121,211,210,211,144,6,39,75,88, -80,0,201,119,235,10,8,41,86,231,71,88,80,129,79,135,186,122,133,224,34,25, -69,234,80,3,91,141,172,40,96,139,113,180,181,133,36,21,110,54,142,134,176, -165,1,176,23,213,47,0,216,134,234,215,128,111,117,181,232,128,209,3,70,230, -107,64,5,139,168,209,235,10,32,36,144,102,235,136,3,146,27,172,40,160,146, -132,103,172,40,192,115,3,117,133,28,22,113,163,69,172,41,103,1,66,188,17, -145,52,168,4,202,113,67,76,130,227,76,194,13,240,108,0,0,83,224,0,2,193,0, -104,146,84,97,48,0,1,94,192,56,169,24,145,179,192,0,5,112,8,56,16,32,128, -56,18,52,125,230,86,147,190,140,28,50,21,13,39,31,23,60,145,158,57,12,141, -47,129,6,155,194,188,24,49,39,199,89,188,124,92,242,70,120,224,201,33,69, -15,155,163,201,68,14,49,39,199,197,211,116,240,242,113,197,232,18,180,254, -36,3,17,46,18,243,35,100,128,172,156,178,70,163,154,76,34,248,146,164,108, -248,75,204,141,146,28,217,115,137,27,95,27,241,173,236,162,160,224,200,2, -206,9,113,13,148,192,209,18,22,164,146,37,193,57,162,4,249,39,196,128,24,2, -178,66,213,136,68,201,16,77,209,131,31,192,242,88,96,92,191,151,34,100,136, -38,232,255,252,92,221,199,197,12,68,209,82,66,212,11,155,185,41,197,13,55, -38,3,66,213,47,135,254,72,12,162,99,133,116,112,0,1,72,66,14,16,16,50,37, -202,160,150,154,66,14,20,8,57,192,28,24,80,113,50,113,100,105,166,120,248, -0,0,179,1,65,196,201,199,20,178,36,227,224,0,2,208,54,113,240,0,1,100,11, -181,192,0,5,178,1,18,160,65,24,131,20,145,25,188,48,132,122,28,76,146,218, -121,35,180,69,145,132,108,224,0,0,0,0,0,0,120,31,153,188,56,132,122,28,76, -146,218,121,35,180,69,145,132,108,224,0,0,0,0,0,0,120,31,168,160,45,110,23, -30,176,33,184,0,0,183,32,29,235,2,27,199,23,0,0,23,4,51,120,129,8,244,56, -153,37,180,242,71,104,139,35,8,217,192,0,0,0,0,0,0,240,63,51,120,145,8,244, -56,153,37,180,242,71,104,139,35,8,217,192,0,0,0,0,0,0,0,64,51,120,161,8, -244,56,153,37,180,242,71,104,139,35,8,217,192,0,0,0,0,0,0,0,64,51,120,177, -8,244,56,153,37,180,242,71,104,139,35,8,217,192,0,0,0,0,0,0,16,64,51,120, -193,8,244,56,153,37,180,242,71,104,139,35,8,217,192,0,0,0,0,0,0,16,64,51, -120,209,8,244,56,153,37,180,242,71,104,139,35,8,217,192,0,0,0,0,0,0,16,64, -51,120,225,8,244,56,153,37,180,242,71,104,139,35,8,217,192,0,0,0,0,0,0,32, -64,32,227,194,0,97,57,162,4,246,104,5,34,92,35,68,225,161,166,220,16,16, -137,112,52,41,73,29,185,1,65,196,201,197,145,166,153,246,72,3,137,204,120, -34,74,8,199,1,67,17,162,112,201,84,128,97,144,78,25,42,16,131,169,1,205,66, -8,35,68,225,161,166,239,128,0,10,192,64,196,104,156,50,96,0,2,172,73,240, -117,96,57,170,97,4,104,156,52,52,221,240,0,1,82,1,74,9,129,125,240,0,1,82, -32,148,25,174,137,58,23,51,190,0,0,42,69,64,195,32,156,50,96,0,2,160,81, -238,2,3,107,173,218,3,192, -}; -#elif defined(DUK_USE_DOUBLE_BE) -DUK_INTERNAL const duk_uint8_t duk_builtins_data[4281] = { -144,148,105,226,32,68,52,228,254,12,104,202,37,132,52,167,194,138,105,245, -124,57,28,211,57,18,64,52,239,126,44,138,111,175,241,164,19,87,145,30,33, -167,22,145,159,8,211,139,9,225,42,5,240,145,139,163,163,8,211,139,10,228, -64,211,19,132,140,93,29,56,70,156,88,119,34,66,146,36,104,137,194,70,46, -142,172,35,78,44,47,146,195,102,11,240,145,139,163,175,8,211,139,9,228,240, -242,112,145,139,163,179,8,211,139,8,237,34,130,118,49,116,118,225,26,48,0, -1,98,29,201,158,46,183,39,135,147,132,140,93,16,132,76,66,33,8,66,16,132, -33,8,66,26,180,105,97,167,68,150,34,33,154,112,0,1,91,247,35,79,111,237, -198,174,232,47,31,23,95,17,13,31,249,96,211,49,50,53,214,77,141,24,0,0,181, -10,228,240,242,15,128,140,65,128,134,188,0,0,90,167,97,181,224,0,2,213,62, -53,224,0,2,213,66,237,120,0,0,181,81,204,107,192,0,5,170,150,67,94,0,0,45, -84,245,90,240,0,1,106,169,162,215,128,0,11,85,93,150,188,0,0,90,171,111,53, -109,22,162,26,48,0,1,84,23,201,146,243,225,26,39,12,145,136,104,192,0,5,61, -11,228,201,121,240,100,19,134,72,196,33,195,14,40,203,112,64,190,76,232, -145,153,136,15,255,0,0,0,0,0,0,25,152,15,254,0,0,0,0,0,0,25,120,144,13,96, -155,194,56,80,206,36,67,141,20,228,70,57,81,206,100,131,156,39,132,168,23, -194,70,46,137,208,21,200,129,166,39,9,24,186,39,72,119,34,66,146,36,104, -137,194,70,46,137,212,23,201,97,179,5,248,72,197,209,58,194,121,60,60,156, -36,98,232,157,129,29,164,80,78,198,46,137,218,146,121,25,71,146,9,209,5, -209,61,48,126,14,138,152,30,67,186,23,143,139,175,131,202,135,228,72,85, -144,83,60,179,30,94,209,233,102,30,98,105,230,103,30,114,121,231,104,30, -122,137,231,233,30,130,153,232,106,30,138,169,232,235,30,144,67,193,25,19, -136,108,207,30,41,224,140,137,194,173,192,153,228,5,242,100,188,248,70,137, -195,36,79,78,47,147,37,231,193,144,78,25,34,122,145,111,36,74,232,176,13, -17,61,234,226,93,207,148,160,84,75,141,7,27,161,32,33,18,225,80,212,76,154, -2,2,70,65,56,100,237,34,140,209,2,67,32,156,50,118,145,64,186,230,61,205, -35,103,155,32,36,141,19,134,78,210,40,206,16,36,70,137,195,39,105,20,11, -174,99,220,210,54,121,210,1,137,33,1,228,207,16,17,70,146,66,3,201,164,32, -0,65,112,152,56,196,159,31,23,77,211,195,201,199,23,160,72,214,246,81,6,12, -73,241,214,111,31,23,60,145,158,56,50,72,81,67,230,232,242,80,19,49,39,199, -89,188,124,92,242,70,120,227,64,194,75,154,72,12,9,73,6,111,21,120,12,40, -144,19,39,25,0,225,144,168,105,56,248,185,228,140,241,200,96,64,100,42,26, -78,62,46,121,35,52,18,92,116,1,36,64,47,158,64,49,98,66,100,156,242,65,23, -196,149,35,103,194,94,100,108,144,230,203,156,64,66,37,201,16,11,32,249, -132,4,34,92,44,93,146,55,152,72,24,137,112,151,153,27,36,5,100,229,144,8, -162,98,92,210,5,76,73,241,214,111,31,23,60,145,158,57,44,48,46,92,185,164, -160,72,151,41,0,50,107,179,244,59,36,93,127,92,6,19,172,3,11,216,0,56,224, -151,29,102,241,241,115,201,25,227,164,64,106,37,199,197,211,116,240,242, -113,197,233,144,40,248,185,228,140,241,196,75,132,109,24,72,128,43,39,84, -129,13,173,161,144,168,105,56,98,78,100,142,214,215,69,1,13,173,161,144, -168,105,57,34,78,100,142,214,215,69,16,67,107,105,110,114,168,254,24,147, -153,35,181,181,212,32,67,107,105,110,114,168,254,72,147,153,35,181,181,212, -36,65,130,3,144,8,26,252,200,13,30,85,16,16,64,90,242,231,192,64,161,163, -203,31,26,172,193,17,4,23,105,159,96,27,172,251,16,32,196,4,14,137,112,17, -136,48,164,28,134,80,215,202,1,132,130,8,12,39,52,64,155,31,24,56,36,1,189, -207,132,0,35,233,35,195,62,3,196,149,36,100,72,160,2,200,232,44,227,0,11, -37,160,68,142,128,36,157,25,200,32,26,79,90,4,73,43,192,122,54,71,65,103, -44,248,14,134,140,151,227,138,231,208,45,96,148,248,134,140,151,227,138, -231,240,1,255,254,10,74,146,56,128,104,4,147,152,72,6,144,28,174,143,8,1, -30,1,165,3,96,31,0,211,3,21,11,153,35,0,211,131,68,131,160,137,16,250,5, -196,131,160,137,200,160,199,156,67,248,0,255,255,65,140,10,48,177,115,56, -35,130,60,19,134,79,89,240,52,177,115,56,39,12,156,123,144,217,251,15,135, -34,167,30,20,170,154,255,232,12,47,244,0,97,28,17,224,39,238,32,40,71,4, -120,39,12,156,4,253,228,5,137,195,39,30,228,54,124,4,253,228,128,194,115, -68,9,252,15,128,232,104,201,126,56,191,35,64,90,193,41,241,13,25,47,199,23, -228,105,3,86,225,1,100,224,156,199,130,36,249,144,10,192,76,71,250,16,15, -18,61,96,17,62,200,3,72,128,136,143,247,32,22,75,64,137,248,64,22,79,90,39, -249,64,38,84,12,167,20,52,223,196,2,230,238,45,214,36,120,32,72,158,208,4, -102,238,45,194,2,201,197,186,196,143,4,9,19,218,0,92,221,202,61,228,143,4, -9,19,218,8,35,55,113,110,16,22,78,81,239,36,120,32,72,158,208,64,73,197,12, -255,0,13,18,60,128,159,212,128,169,76,17,156,185,100,76,255,163,64,65,26, -57,114,200,153,255,70,144,33,13,18,232,50,75,226,104,6,149,3,41,199,246, -130,12,128,28,142,156,120,203,175,158,8,194,207,1,6,81,20,79,88,11,237,84, -11,161,32,63,247,255,255,255,255,255,255,137,235,16,221,170,129,116,36,0,0, -0,0,0,0,0,0,28,196,7,255,128,0,0,0,0,0,2,61,123,164,137,162,164,218,67,74, -134,162,120,128,255,224,0,0,0,0,0,0,71,173,33,129,52,84,155,72,105,80,212, -79,16,63,252,0,0,0,0,0,0,3,244,143,146,22,230,192,60,176,0,0,0,0,0,0,33, -214,2,251,82,1,73,180,134,204,134,36,96,33,159,255,255,255,255,255,255,144, -235,16,221,169,0,164,218,67,102,67,18,48,48,207,255,255,255,255,255,255, -196,60,17,145,56,134,204,241,226,158,8,200,156,42,220,9,158,65,196,34,92, -42,26,137,147,120,64,74,37,196,54,100,49,35,188,36,5,68,184,208,113,187, -194,80,212,75,146,1,73,196,54,100,49,35,188,38,57,37,56,240,0,0,0,0,0,0,0, -0,32,235,248,68,48,156,2,24,94,24,0,243,119,10,139,144,123,242,3,102,238, -18,239,115,72,217,160,11,223,16,23,55,113,241,32,145,36,57,188,18,16,102,3, -5,120,35,34,89,32,15,180,152,173,127,0,218,235,88,0,228,180,227,200,127, -248,0,0,0,0,0,0,197,107,240,64,6,77,220,24,38,78,74,113,67,77,130,4,12,155, -185,52,48,156,148,226,134,155,4,10,194,96,129,132,166,238,45,194,2,201,193, -130,100,228,167,20,52,216,32,113,41,187,139,112,128,178,114,104,97,57,41, -197,13,54,8,32,48,216,32,130,195,224,130,19,97,124,134,23,6,0,57,137,62,77, -12,38,12,0,179,18,124,45,22,190,96,128,141,176,134,28,98,79,180,152,139, -218,45,124,193,1,27,97,16,32,196,159,24,230,204,246,194,40,89,137,62,210, -98,103,92,217,158,216,70,7,49,39,193,130,100,182,17,194,140,73,246,147,16, -250,9,146,216,72,6,49,39,193,131,22,194,72,73,137,62,210,98,31,65,139,97, -40,32,196,159,14,234,70,86,194,88,89,137,62,210,98,63,93,72,202,216,76,10, -49,39,198,33,180,153,37,108,38,134,152,147,237,38,38,117,13,164,201,43,97, -56,40,196,159,36,65,57,163,149,176,158,26,98,79,180,152,165,210,9,205,28, -173,133,0,243,18,124,98,22,180,72,130,115,71,43,97,68,72,196,159,105,49,51, -168,90,209,34,9,205,28,173,133,33,19,18,124,154,24,76,185,164,227,138,89, -18,119,0,7,145,39,201,161,132,188,64,124,137,62,49,11,90,36,65,57,163,149, -210,166,37,34,79,180,152,153,212,45,104,145,4,230,142,87,74,160,84,137,62, -72,130,115,71,43,171,234,134,200,147,237,38,41,116,130,115,71,43,171,235,5, -72,147,227,16,218,76,146,186,254,184,108,137,62,210,98,103,80,218,76,146, -186,254,192,68,137,62,29,212,140,174,207,178,23,34,79,180,152,143,215,82, -50,187,62,208,60,137,62,12,19,37,210,182,21,34,79,180,152,135,208,76,151, -74,224,68,137,62,49,205,153,238,175,186,23,34,79,180,152,153,215,54,103, -186,190,240,92,137,62,22,139,95,48,64,70,235,251,225,210,36,251,73,136,189, -162,215,204,16,17,186,255,2,14,98,79,152,32,35,108,48,64,242,36,249,130,2, -55,75,6,212,224,72,200,51,128,114,108,28,100,128,0,0,0,0,0,0,0,12,110,127, -48,98,115,249,201,117,243,249,195,21,159,206,38,47,63,156,86,8,75,144,94, -82,1,38,73,79,208,67,95,233,1,6,128,14,79,129,186,40,249,18,149,182,207, -144,200,155,188,248,204,105,184,207,142,199,137,175,201,0,159,72,10,5,21, -221,10,120,74,129,124,36,98,232,228,74,81,62,160,20,10,107,186,21,114,32, -105,137,194,70,46,142,68,165,19,235,1,64,170,187,161,119,34,66,146,36,104, -137,194,70,46,142,68,165,19,236,1,64,174,187,161,95,37,134,204,23,225,35, -23,71,34,82,137,246,128,160,89,93,208,167,147,195,201,194,70,46,142,68,165, -19,238,1,64,182,187,161,71,105,20,19,177,139,163,145,41,68,16,7,6,15,82,70, -72,115,96,32,106,27,128,0,0,0,0,91,60,165,195,201,194,8,134,149,216,162,0, -192,41,225,8,2,48,177,36,1,149,13,196,15,0,200,209,97,199,128,99,32,176, -195,192,113,57,143,0,167,133,32,230,80,28,202,139,175,238,2,48,189,192,20, -1,119,80,87,193,186,129,89,56,72,197,209,200,193,185,35,23,71,109,13,219, -36,98,232,237,156,13,26,208,211,14,102,19,87,137,91,95,128,0,10,96,24,92,0, -0,83,2,53,56,0,0,165,3,28,204,160,160,226,100,226,200,211,76,241,240,0,1, -102,8,22,75,64,137,73,20,230,105,133,7,19,39,22,70,154,103,143,128,0,11,48, -20,28,76,156,113,75,34,78,62,0,0,45,3,103,31,0,0,22,65,44,57,137,62,33,179, -216,162,152,192,131,18,124,162,27,61,138,41,108,32,196,159,16,217,232,235, -81,76,104,73,137,62,81,13,158,142,181,20,184,16,98,79,136,108,244,244,168, -166,56,36,196,159,40,134,207,79,74,138,93,10,49,39,194,173,192,158,158,149, -20,188,20,98,79,133,91,129,61,109,74,41,124,30,68,159,16,217,236,83,108,96, -68,137,62,81,13,158,197,54,182,17,34,79,136,108,244,117,169,182,52,38,68, -159,40,134,207,71,90,155,92,8,145,39,196,54,122,122,84,219,28,19,34,79,148, -67,103,167,165,77,174,133,72,147,225,86,224,79,79,74,155,94,10,145,39,194, -173,192,158,182,165,54,190,206,25,212,35,208,226,100,150,211,201,29,162,44, -140,35,103,0,255,192,0,0,0,0,0,0,206,25,228,35,208,226,100,150,211,201,29, -162,44,140,35,103,0,255,192,0,0,0,0,0,0,206,25,244,35,208,226,100,150,211, -201,29,162,44,140,35,103,0,255,192,0,0,0,0,0,0,206,26,4,35,208,226,100,150, -211,201,29,162,44,140,35,103,1,0,0,0,0,0,0,0,0,206,26,20,35,208,226,100, -150,211,201,29,162,44,140,35,103,1,0,0,0,0,0,0,0,0,206,26,36,35,208,226, -100,150,211,201,29,162,44,140,35,103,1,0,64,0,0,0,0,0,0,206,26,52,35,208, -226,100,150,211,201,29,162,44,140,35,103,1,0,64,0,0,0,0,0,0,206,26,68,35, -208,226,100,150,211,201,29,162,44,140,35,103,1,0,64,0,0,0,0,0,0,206,26,84, -35,208,226,100,150,211,201,29,162,44,140,35,103,1,0,128,0,0,0,0,0,0,195, -154,99,16,38,36,0,251,68,117,179,216,162,128,68,72,1,241,13,158,197,20,150, -25,18,0,125,162,58,217,232,235,117,100,162,136,25,18,0,125,162,58,217,232, -235,116,36,162,145,2,226,64,15,136,108,244,117,186,178,81,73,129,113,32,7, -196,54,122,58,221,9,40,165,64,200,144,3,237,17,214,207,79,75,171,37,20,80, -200,144,3,237,17,214,207,79,75,161,37,20,138,23,18,0,124,67,103,167,165, -213,146,138,77,11,137,0,62,33,179,211,210,232,73,69,42,133,196,128,31,10, -183,2,125,89,40,163,5,196,128,31,10,183,2,125,9,40,164,96,200,144,3,224, -221,64,172,157,89,40,163,134,68,128,31,6,234,5,100,232,73,69,35,133,68,128, -31,104,142,182,125,89,40,180,0,168,144,3,237,17,214,207,161,37,22,144,19, -18,0,124,67,103,213,146,139,80,9,137,0,62,33,179,232,73,69,172,5,90,40,153, -59,68,117,179,216,166,192,77,162,137,147,136,108,246,41,180,176,219,69,19, -39,104,142,182,122,58,221,89,41,178,6,218,40,153,59,68,117,179,209,214,232, -73,77,162,6,90,40,153,56,134,207,71,91,171,37,54,152,25,104,162,100,226,27, -61,29,110,132,148,218,160,109,162,137,147,180,71,91,61,61,46,172,148,217, -67,109,20,76,157,162,58,217,233,233,116,36,166,209,67,45,20,76,156,67,103, -167,165,213,146,155,77,12,180,81,50,113,13,158,158,151,66,74,109,84,50,209, -68,201,194,173,192,159,86,74,108,193,150,138,38,78,21,110,4,250,18,83,104, -193,182,138,38,78,13,212,10,201,213,146,155,56,109,162,137,147,131,117,2, -178,116,36,166,209,194,237,20,76,157,162,58,217,245,100,167,16,2,237,20,76, -157,162,58,217,244,36,167,18,2,173,20,76,156,67,103,213,146,156,80,10,180, -81,50,113,13,159,66,74,113,97,175,221,48,216,110,64,4,42,22,189,179,0,196, -133,0,185,80,32,28,78,99,193,18,80,36,4,19,159,141,172,0,178,90,4,74,73,0, -22,209,68,201,187,129,4,2,8,3,132,64,60,36,4,0,91,240,168,177,69,118,144, -157,91,116,116,32,32,1,53,216,221,218,170,139,3,234,219,165,0,255,152,185, -11,251,232,231,188,47,86,227,105,18,1,255,184,170,59,41,92,23,240,110,173, -198,209,208,36,3,253,188,183,177,82,110,80,224,93,122,32,32,4,144,253,170, -34,22,140,7,236,161,25,232,237,105,64,63,230,160,158,102,127,59,205,11,217, -66,51,210,128,127,237,65,60,204,254,119,155,171,197,34,168,48,6,90,194,1,0, -39,75,88,72,8,9,33,186,194,80,64,76,13,214,19,2,130,96,110,150,189,0,65,6, -51,214,20,128,65,17,11,214,19,130,137,121,211,210,211,144,6,39,75,88,80,0, -201,119,235,10,8,41,86,231,71,88,80,129,79,135,186,122,133,224,34,25,69, -234,80,3,91,141,172,40,96,139,113,180,181,133,36,21,110,54,142,134,176,165, -1,176,23,213,47,0,216,134,234,215,128,111,117,181,232,128,209,3,70,230,107, -64,5,139,168,209,235,10,32,36,144,102,235,136,3,146,27,172,40,160,146,132, -103,172,40,192,115,3,117,133,28,22,113,163,69,172,41,103,1,66,188,17,145, -52,168,4,202,113,67,76,130,227,76,194,13,240,108,0,0,83,224,0,2,193,0,104, -146,84,97,48,0,1,94,192,56,169,24,145,179,192,0,5,112,8,56,16,32,128,56,18, -52,125,230,86,147,190,140,28,50,21,13,39,31,23,60,145,158,57,12,141,47,129, -6,155,194,188,24,49,39,199,89,188,124,92,242,70,120,224,201,33,69,15,155, -163,201,68,14,49,39,199,197,211,116,240,242,113,197,232,18,180,254,36,3,17, -46,18,243,35,100,128,172,156,178,70,163,154,76,34,248,146,164,108,248,75, -204,141,146,28,217,115,137,27,95,27,241,173,236,162,160,224,200,2,206,9, -113,13,148,192,209,18,22,164,146,37,193,57,162,4,249,39,196,128,24,2,178, -66,213,136,68,201,16,77,209,131,31,192,242,88,96,92,191,151,34,100,136,38, -232,255,252,92,221,199,197,12,68,209,82,66,212,11,155,185,41,197,13,55,38, -3,66,213,47,135,254,72,12,162,99,133,116,112,0,1,72,66,14,16,16,50,37,202, -160,150,154,66,14,20,8,57,192,28,24,80,113,50,113,100,105,166,120,248,0,0, -179,1,65,196,201,199,20,178,36,227,224,0,2,208,54,113,240,0,1,100,11,181, -192,0,5,178,1,18,160,65,24,131,20,145,25,188,48,132,122,28,76,146,218,121, -35,180,69,145,132,108,224,31,248,0,0,0,0,0,0,25,188,56,132,122,28,76,146, -218,121,35,180,69,145,132,108,224,31,248,0,0,0,0,0,0,40,160,45,110,23,30, -176,33,184,0,0,183,32,29,235,2,27,199,23,0,0,23,4,51,120,129,8,244,56,153, -37,180,242,71,104,139,35,8,217,192,63,240,0,0,0,0,0,0,51,120,145,8,244,56, -153,37,180,242,71,104,139,35,8,217,192,64,0,0,0,0,0,0,0,51,120,161,8,244, -56,153,37,180,242,71,104,139,35,8,217,192,64,0,0,0,0,0,0,0,51,120,177,8, -244,56,153,37,180,242,71,104,139,35,8,217,192,64,16,0,0,0,0,0,0,51,120,193, -8,244,56,153,37,180,242,71,104,139,35,8,217,192,64,16,0,0,0,0,0,0,51,120, -209,8,244,56,153,37,180,242,71,104,139,35,8,217,192,64,16,0,0,0,0,0,0,51, -120,225,8,244,56,153,37,180,242,71,104,139,35,8,217,192,64,32,0,0,0,0,0,0, -32,227,194,0,97,57,162,4,246,104,5,34,92,35,68,225,161,166,220,16,16,137, -112,52,41,73,29,185,1,65,196,201,197,145,166,153,246,72,3,137,204,120,34, -74,8,199,1,67,17,162,112,201,84,128,97,144,78,25,42,16,131,169,1,205,66,8, -35,68,225,161,166,239,128,0,10,192,64,196,104,156,50,96,0,2,172,73,240,117, -96,57,170,97,4,104,156,52,52,221,240,0,1,82,1,74,9,129,125,240,0,1,82,32, -148,25,174,137,58,23,51,190,0,0,42,69,64,195,32,156,50,96,0,2,160,81,238,2, -3,107,173,218,3,192, -}; -#elif defined(DUK_USE_DOUBLE_ME) -DUK_INTERNAL const duk_uint8_t duk_builtins_data[4281] = { -144,148,105,226,32,68,52,228,254,12,104,202,37,132,52,167,194,138,105,245, -124,57,28,211,57,18,64,52,239,126,44,138,111,175,241,164,19,87,145,30,33, -167,22,145,159,8,211,139,9,225,42,5,240,145,139,163,163,8,211,139,10,228, -64,211,19,132,140,93,29,56,70,156,88,119,34,66,146,36,104,137,194,70,46, -142,172,35,78,44,47,146,195,102,11,240,145,139,163,175,8,211,139,9,228,240, -242,112,145,139,163,179,8,211,139,8,237,34,130,118,49,116,118,225,26,48,0, -1,98,29,201,158,46,183,39,135,147,132,140,93,16,132,76,66,33,8,66,16,132, -33,8,66,26,180,105,97,167,68,150,34,33,154,112,0,1,91,247,35,79,111,237, -198,174,232,47,31,23,95,17,13,31,249,96,211,49,50,53,214,77,141,24,0,0,181, -10,228,240,242,15,128,140,65,128,134,188,0,0,90,167,97,181,224,0,2,213,62, -53,224,0,2,213,66,237,120,0,0,181,81,204,107,192,0,5,170,150,67,94,0,0,45, -84,245,90,240,0,1,106,169,162,215,128,0,11,85,93,150,188,0,0,90,171,111,53, -109,22,162,26,48,0,1,84,23,201,146,243,225,26,39,12,145,136,104,192,0,5,61, -11,228,201,121,240,100,19,134,72,196,33,195,14,40,203,112,64,190,76,232, -145,153,136,0,0,31,15,224,0,0,0,25,152,0,0,30,15,224,0,0,0,25,120,144,13, -96,155,194,56,80,206,36,67,141,20,228,70,57,81,206,100,131,156,39,132,168, -23,194,70,46,137,208,21,200,129,166,39,9,24,186,39,72,119,34,66,146,36,104, -137,194,70,46,137,212,23,201,97,179,5,248,72,197,209,58,194,121,60,60,156, -36,98,232,157,129,29,164,80,78,198,46,137,218,146,121,25,71,146,9,209,5, -209,61,48,126,14,138,152,30,67,186,23,143,139,175,131,202,135,228,72,85, -144,83,60,179,30,94,209,233,102,30,98,105,230,103,30,114,121,231,104,30, -122,137,231,233,30,130,153,232,106,30,138,169,232,235,30,144,67,193,25,19, -136,108,207,30,41,224,140,137,194,173,192,153,228,5,242,100,188,248,70,137, -195,36,79,78,47,147,37,231,193,144,78,25,34,122,145,111,36,74,232,176,13, -17,61,234,226,93,207,148,160,84,75,141,7,27,161,32,33,18,225,80,212,76,154, -2,2,70,65,56,100,237,34,140,209,2,67,32,156,50,118,145,64,186,230,61,205, -35,103,155,32,36,141,19,134,78,210,40,206,16,36,70,137,195,39,105,20,11, -174,99,220,210,54,121,210,1,137,33,1,228,207,16,17,70,146,66,3,201,164,32, -0,65,112,152,56,196,159,31,23,77,211,195,201,199,23,160,72,214,246,81,6,12, -73,241,214,111,31,23,60,145,158,56,50,72,81,67,230,232,242,80,19,49,39,199, -89,188,124,92,242,70,120,227,64,194,75,154,72,12,9,73,6,111,21,120,12,40, -144,19,39,25,0,225,144,168,105,56,248,185,228,140,241,200,96,64,100,42,26, -78,62,46,121,35,52,18,92,116,1,36,64,47,158,64,49,98,66,100,156,242,65,23, -196,149,35,103,194,94,100,108,144,230,203,156,64,66,37,201,16,11,32,249, -132,4,34,92,44,93,146,55,152,72,24,137,112,151,153,27,36,5,100,229,144,8, -162,98,92,210,5,76,73,241,214,111,31,23,60,145,158,57,44,48,46,92,185,164, -160,72,151,41,0,50,107,179,244,59,36,93,127,92,6,19,172,3,11,216,0,56,224, -151,29,102,241,241,115,201,25,227,164,64,106,37,199,197,211,116,240,242, -113,197,233,144,40,248,185,228,140,241,196,75,132,109,24,72,128,43,39,84, -129,13,173,161,144,168,105,56,98,78,100,142,214,215,69,1,13,173,161,144, -168,105,57,34,78,100,142,214,215,69,16,67,107,105,110,114,168,254,24,147, -153,35,181,181,212,32,67,107,105,110,114,168,254,72,147,153,35,181,181,212, -36,65,130,3,144,8,26,252,200,13,30,85,16,16,64,90,242,231,192,64,161,163, -203,31,26,172,193,17,4,23,105,159,96,27,172,251,16,32,196,4,14,137,112,17, -136,48,164,28,134,80,215,202,1,132,130,8,12,39,52,64,155,31,24,56,36,1,189, -207,132,0,35,233,35,195,62,3,196,149,36,100,72,160,2,200,232,44,227,0,11, -37,160,68,142,128,36,157,25,200,32,26,79,90,4,73,43,192,122,54,71,65,103, -44,248,14,134,140,151,227,138,231,208,45,96,148,248,134,140,151,227,138, -231,240,1,255,254,10,74,146,56,128,104,4,147,152,72,6,144,28,174,143,8,1, -30,1,165,3,96,31,0,211,3,21,11,153,35,0,211,131,68,131,160,137,16,250,5, -196,131,160,137,200,160,199,156,67,248,0,255,255,65,140,10,48,177,115,56, -35,130,60,19,134,79,89,240,52,177,115,56,39,12,156,123,144,217,251,15,135, -34,167,30,20,170,154,255,232,12,47,244,0,97,28,17,224,39,238,32,40,71,4, -120,39,12,156,4,253,228,5,137,195,39,30,228,54,124,4,253,228,128,194,115, -68,9,252,15,128,232,104,201,126,56,191,35,64,90,193,41,241,13,25,47,199,23, -228,105,3,86,225,1,100,224,156,199,130,36,249,144,10,192,76,71,250,16,15, -18,61,96,17,62,200,3,72,128,136,143,247,32,22,75,64,137,248,64,22,79,90,39, -249,64,38,84,12,167,20,52,223,196,2,230,238,45,214,36,120,32,72,158,208,4, -102,238,45,194,2,201,197,186,196,143,4,9,19,218,0,92,221,202,61,228,143,4, -9,19,218,8,35,55,113,110,16,22,78,81,239,36,120,32,72,158,208,64,73,197,12, -255,0,13,18,60,128,159,212,128,169,76,17,156,185,100,76,255,163,64,65,26, -57,114,200,153,255,70,144,33,13,18,232,50,75,226,104,6,149,3,41,199,246, -130,12,128,28,142,156,120,203,175,158,8,194,207,1,6,81,20,79,88,11,237,84, -11,161,32,127,255,247,191,255,255,255,255,137,235,16,221,170,129,116,36,0, -0,0,0,0,16,0,0,12,196,0,0,15,135,240,0,0,0,2,61,123,164,137,162,164,218,67, -74,134,162,120,128,0,1,224,254,0,0,0,0,71,173,33,129,52,84,155,72,105,80, -212,79,16,0,0,60,63,192,0,0,0,3,244,143,146,22,230,192,0,0,176,60,0,0,0,0, -33,214,2,251,82,1,73,180,134,204,134,36,96,127,255,159,161,255,255,255,255, -144,235,16,221,169,0,164,218,67,102,67,18,48,63,255,207,240,255,255,255, -255,196,60,17,145,56,134,204,241,226,158,8,200,156,42,220,9,158,65,196,34, -92,42,26,137,147,120,64,74,37,196,54,100,49,35,188,36,5,68,184,208,113,187, -194,80,212,75,146,1,73,196,54,100,49,35,188,38,57,37,56,240,0,0,0,0,0,0,0, -0,32,235,248,68,48,156,2,24,94,24,0,243,119,10,139,144,123,242,3,102,238, -18,239,115,72,217,160,11,223,16,23,55,113,241,32,145,36,57,188,18,16,102,3, -5,120,35,34,89,32,15,180,152,173,127,0,218,235,88,0,228,180,227,200,0,0, -248,127,0,0,0,0,197,107,240,64,6,77,220,24,38,78,74,113,67,77,130,4,12,155, -185,52,48,156,148,226,134,155,4,10,194,96,129,132,166,238,45,194,2,201,193, -130,100,228,167,20,52,216,32,113,41,187,139,112,128,178,114,104,97,57,41, -197,13,54,8,32,48,216,32,130,195,224,130,19,97,124,134,23,6,0,57,137,62,77, -12,38,12,0,179,18,124,45,22,190,96,128,141,176,134,28,98,79,180,152,139, -218,45,124,193,1,27,97,16,32,196,159,24,230,204,246,194,40,89,137,62,210, -98,103,92,217,158,216,70,7,49,39,193,130,100,182,17,194,140,73,246,147,16, -250,9,146,216,72,6,49,39,193,131,22,194,72,73,137,62,210,98,31,65,139,97, -40,32,196,159,14,234,70,86,194,88,89,137,62,210,98,63,93,72,202,216,76,10, -49,39,198,33,180,153,37,108,38,134,152,147,237,38,38,117,13,164,201,43,97, -56,40,196,159,36,65,57,163,149,176,158,26,98,79,180,152,165,210,9,205,28, -173,133,0,243,18,124,98,22,180,72,130,115,71,43,97,68,72,196,159,105,49,51, -168,90,209,34,9,205,28,173,133,33,19,18,124,154,24,76,185,164,227,138,89, -18,119,0,7,145,39,201,161,132,188,64,124,137,62,49,11,90,36,65,57,163,149, -210,166,37,34,79,180,152,153,212,45,104,145,4,230,142,87,74,160,84,137,62, -72,130,115,71,43,171,234,134,200,147,237,38,41,116,130,115,71,43,171,235,5, -72,147,227,16,218,76,146,186,254,184,108,137,62,210,98,103,80,218,76,146, -186,254,192,68,137,62,29,212,140,174,207,178,23,34,79,180,152,143,215,82, -50,187,62,208,60,137,62,12,19,37,210,182,21,34,79,180,152,135,208,76,151, -74,224,68,137,62,49,205,153,238,175,186,23,34,79,180,152,153,215,54,103, -186,190,240,92,137,62,22,139,95,48,64,70,235,251,225,210,36,251,73,136,189, -162,215,204,16,17,186,255,2,14,98,79,152,32,35,108,48,64,242,36,249,130,2, -55,75,6,212,224,72,200,51,128,114,108,28,100,128,0,0,0,0,0,0,0,12,110,127, -48,98,115,249,201,117,243,249,195,21,159,206,38,47,63,156,86,8,75,144,94, -82,1,38,73,79,208,67,95,233,1,6,128,14,79,129,186,40,249,18,149,182,207, -144,200,155,188,248,204,105,184,207,142,199,137,175,201,0,159,72,10,5,21, -221,10,120,74,129,124,36,98,232,228,74,81,62,160,20,10,107,186,21,114,32, -105,137,194,70,46,142,68,165,19,235,1,64,170,187,161,119,34,66,146,36,104, -137,194,70,46,142,68,165,19,236,1,64,174,187,161,95,37,134,204,23,225,35, -23,71,34,82,137,246,128,160,89,93,208,167,147,195,201,194,70,46,142,68,165, -19,238,1,64,182,187,161,71,105,20,19,177,139,163,145,41,68,16,7,6,15,82,70, -72,115,96,0,27,234,32,0,0,0,0,91,60,165,195,201,194,8,134,149,216,162,0, -192,41,225,8,2,48,177,36,1,149,13,196,15,0,200,209,97,199,128,99,32,176, -195,192,113,57,143,0,167,133,32,230,80,28,202,139,175,238,2,48,189,192,20, -1,119,80,87,193,186,129,89,56,72,197,209,200,193,185,35,23,71,109,13,219, -36,98,232,237,156,13,26,208,211,14,102,19,87,137,91,95,128,0,10,96,24,92,0, -0,83,2,53,56,0,0,165,3,28,204,160,160,226,100,226,200,211,76,241,240,0,1, -102,8,22,75,64,137,73,20,230,105,133,7,19,39,22,70,154,103,143,128,0,11,48, -20,28,76,156,113,75,34,78,62,0,0,45,3,103,31,0,0,22,65,44,57,137,62,33,179, -216,162,152,192,131,18,124,162,27,61,138,41,108,32,196,159,16,217,232,235, -81,76,104,73,137,62,81,13,158,142,181,20,184,16,98,79,136,108,244,244,168, -166,56,36,196,159,40,134,207,79,74,138,93,10,49,39,194,173,192,158,158,149, -20,188,20,98,79,133,91,129,61,109,74,41,124,30,68,159,16,217,236,83,108,96, -68,137,62,81,13,158,197,54,182,17,34,79,136,108,244,117,169,182,52,38,68, -159,40,134,207,71,90,155,92,8,145,39,196,54,122,122,84,219,28,19,34,79,148, -67,103,167,165,77,174,133,72,147,225,86,224,79,79,74,155,94,10,145,39,194, -173,192,158,182,165,54,190,206,25,212,35,208,226,100,150,211,201,29,162,44, -140,35,103,0,0,3,192,252,0,0,0,0,206,25,228,35,208,226,100,150,211,201,29, -162,44,140,35,103,0,0,3,192,252,0,0,0,0,206,25,244,35,208,226,100,150,211, -201,29,162,44,140,35,103,0,0,3,192,252,0,0,0,0,206,26,4,35,208,226,100,150, -211,201,29,162,44,140,35,103,0,0,0,1,0,0,0,0,0,206,26,20,35,208,226,100, -150,211,201,29,162,44,140,35,103,0,0,0,1,0,0,0,0,0,206,26,36,35,208,226, -100,150,211,201,29,162,44,140,35,103,0,0,0,65,0,0,0,0,0,206,26,52,35,208, -226,100,150,211,201,29,162,44,140,35,103,0,0,0,65,0,0,0,0,0,206,26,68,35, -208,226,100,150,211,201,29,162,44,140,35,103,0,0,0,65,0,0,0,0,0,206,26,84, -35,208,226,100,150,211,201,29,162,44,140,35,103,0,0,0,129,0,0,0,0,0,195, -154,99,16,38,36,0,251,68,117,179,216,162,128,68,72,1,241,13,158,197,20,150, -25,18,0,125,162,58,217,232,235,117,100,162,136,25,18,0,125,162,58,217,232, -235,116,36,162,145,2,226,64,15,136,108,244,117,186,178,81,73,129,113,32,7, -196,54,122,58,221,9,40,165,64,200,144,3,237,17,214,207,79,75,171,37,20,80, -200,144,3,237,17,214,207,79,75,161,37,20,138,23,18,0,124,67,103,167,165, -213,146,138,77,11,137,0,62,33,179,211,210,232,73,69,42,133,196,128,31,10, -183,2,125,89,40,163,5,196,128,31,10,183,2,125,9,40,164,96,200,144,3,224, -221,64,172,157,89,40,163,134,68,128,31,6,234,5,100,232,73,69,35,133,68,128, -31,104,142,182,125,89,40,180,0,168,144,3,237,17,214,207,161,37,22,144,19, -18,0,124,67,103,213,146,139,80,9,137,0,62,33,179,232,73,69,172,5,90,40,153, -59,68,117,179,216,166,192,77,162,137,147,136,108,246,41,180,176,219,69,19, -39,104,142,182,122,58,221,89,41,178,6,218,40,153,59,68,117,179,209,214,232, -73,77,162,6,90,40,153,56,134,207,71,91,171,37,54,152,25,104,162,100,226,27, -61,29,110,132,148,218,160,109,162,137,147,180,71,91,61,61,46,172,148,217, -67,109,20,76,157,162,58,217,233,233,116,36,166,209,67,45,20,76,156,67,103, -167,165,213,146,155,77,12,180,81,50,113,13,158,158,151,66,74,109,84,50,209, -68,201,194,173,192,159,86,74,108,193,150,138,38,78,21,110,4,250,18,83,104, -193,182,138,38,78,13,212,10,201,213,146,155,56,109,162,137,147,131,117,2, -178,116,36,166,209,194,237,20,76,157,162,58,217,245,100,167,16,2,237,20,76, -157,162,58,217,244,36,167,18,2,173,20,76,156,67,103,213,146,156,80,10,180, -81,50,113,13,159,66,74,113,97,175,221,48,216,110,64,4,42,22,189,179,0,196, -133,0,185,80,32,28,78,99,193,18,80,36,4,19,159,141,172,0,178,90,4,74,73,0, -22,209,68,201,187,129,4,2,8,3,132,64,60,36,0,171,240,84,6,149,113,72,176, -157,91,116,116,32,88,181,129,32,11,42,218,221,131,234,219,165,1,8,187,152, -255,188,231,235,248,47,86,227,105,18,2,56,175,185,255,244,17,91,40,110,173, -198,209,208,36,7,188,189,179,240,238,82,97,80,93,122,32,125,144,132,160,12, -22,162,42,7,236,161,25,232,237,105,64,158,160,230,63,205,59,127,102,11,217, -66,51,210,129,61,65,236,127,154,118,254,205,171,197,34,168,48,6,90,194,1,0, -39,75,88,72,8,9,33,186,194,80,64,76,13,214,19,2,130,96,110,150,189,0,65,6, -51,214,20,128,65,17,11,214,19,130,137,121,211,210,211,144,6,39,75,88,80,0, -201,119,235,10,8,41,86,231,71,88,80,129,79,135,186,122,133,224,34,25,69, -234,80,3,91,141,172,40,96,139,113,180,181,133,36,21,110,54,142,134,176,165, -1,176,23,213,47,0,216,134,234,215,128,111,117,181,232,128,209,3,70,230,107, -64,5,139,168,209,235,10,32,36,144,102,235,136,3,146,27,172,40,160,146,132, -103,172,40,192,115,3,117,133,28,22,113,163,69,172,41,103,1,66,188,17,145, -52,168,4,202,113,67,76,130,227,76,194,13,240,108,0,0,83,224,0,2,193,0,104, -146,84,97,48,0,1,94,192,56,169,24,145,179,192,0,5,112,8,56,16,32,128,56,18, -52,125,230,86,147,190,140,28,50,21,13,39,31,23,60,145,158,57,12,141,47,129, -6,155,194,188,24,49,39,199,89,188,124,92,242,70,120,224,201,33,69,15,155, -163,201,68,14,49,39,199,197,211,116,240,242,113,197,232,18,180,254,36,3,17, -46,18,243,35,100,128,172,156,178,70,163,154,76,34,248,146,164,108,248,75, -204,141,146,28,217,115,137,27,95,27,241,173,236,162,160,224,200,2,206,9, -113,13,148,192,209,18,22,164,146,37,193,57,162,4,249,39,196,128,24,2,178, -66,213,136,68,201,16,77,209,131,31,192,242,88,96,92,191,151,34,100,136,38, -232,255,252,92,221,199,197,12,68,209,82,66,212,11,155,185,41,197,13,55,38, -3,66,213,47,135,254,72,12,162,99,133,116,112,0,1,72,66,14,16,16,50,37,202, -160,150,154,66,14,20,8,57,192,28,24,80,113,50,113,100,105,166,120,248,0,0, -179,1,65,196,201,199,20,178,36,227,224,0,2,208,54,113,240,0,1,100,11,181, -192,0,5,178,1,18,160,65,24,131,20,145,25,188,48,132,122,28,76,146,218,121, -35,180,69,145,132,108,224,0,0,120,31,128,0,0,0,25,188,56,132,122,28,76,146, -218,121,35,180,69,145,132,108,224,0,0,120,31,128,0,0,0,40,160,45,110,23,30, -176,33,184,0,0,183,32,29,235,2,27,199,23,0,0,23,4,51,120,129,8,244,56,153, -37,180,242,71,104,139,35,8,217,192,0,0,240,63,0,0,0,0,51,120,145,8,244,56, -153,37,180,242,71,104,139,35,8,217,192,0,0,0,64,0,0,0,0,51,120,161,8,244, -56,153,37,180,242,71,104,139,35,8,217,192,0,0,0,64,0,0,0,0,51,120,177,8, -244,56,153,37,180,242,71,104,139,35,8,217,192,0,0,16,64,0,0,0,0,51,120,193, -8,244,56,153,37,180,242,71,104,139,35,8,217,192,0,0,16,64,0,0,0,0,51,120, -209,8,244,56,153,37,180,242,71,104,139,35,8,217,192,0,0,16,64,0,0,0,0,51, -120,225,8,244,56,153,37,180,242,71,104,139,35,8,217,192,0,0,32,64,0,0,0,0, -32,227,194,0,97,57,162,4,246,104,5,34,92,35,68,225,161,166,220,16,16,137, -112,52,41,73,29,185,1,65,196,201,197,145,166,153,246,72,3,137,204,120,34, -74,8,199,1,67,17,162,112,201,84,128,97,144,78,25,42,16,131,169,1,205,66,8, -35,68,225,161,166,239,128,0,10,192,64,196,104,156,50,96,0,2,172,73,240,117, -96,57,170,97,4,104,156,52,52,221,240,0,1,82,1,74,9,129,125,240,0,1,82,32, -148,25,174,137,58,23,51,190,0,0,42,69,64,195,32,156,50,96,0,2,160,81,238,2, -3,107,173,218,3,192, -}; -#else -#error invalid endianness defines -#endif -#endif /* DUK_USE_ROM_OBJECTS */ - -/* automatic undefs */ -#undef DUK__REFCINIT -#line 1 "duk_error_macros.c" -/* - * Error and fatal handling. - */ - -/* #include duk_internal.h -> already included */ - -#define DUK__ERRFMT_BUFSIZE 256 /* size for formatting buffers */ - -#if defined(DUK_USE_VERBOSE_ERRORS) - -DUK_INTERNAL DUK_COLD void duk_err_handle_error_fmt(duk_hthread *thr, - const char *filename, - duk_uint_t line_and_code, - const char *fmt, - ...) { - va_list ap; - char msg[DUK__ERRFMT_BUFSIZE]; - va_start(ap, fmt); - (void) DUK_VSNPRINTF(msg, sizeof(msg), fmt, ap); - msg[sizeof(msg) - 1] = (char) 0; - duk_err_create_and_throw(thr, - (duk_errcode_t) (line_and_code >> 24), - msg, - filename, - (duk_int_t) (line_and_code & 0x00ffffffL)); - va_end(ap); /* dead code, but ensures portability (see Linux man page notes) */ -} - -DUK_INTERNAL DUK_COLD void duk_err_handle_error(duk_hthread *thr, const char *filename, duk_uint_t line_and_code, const char *msg) { - duk_err_create_and_throw(thr, - (duk_errcode_t) (line_and_code >> 24), - msg, - filename, - (duk_int_t) (line_and_code & 0x00ffffffL)); -} - -#else /* DUK_USE_VERBOSE_ERRORS */ - -DUK_INTERNAL DUK_COLD void duk_err_handle_error(duk_hthread *thr, duk_errcode_t code) { - duk_err_create_and_throw(thr, code); -} - -#endif /* DUK_USE_VERBOSE_ERRORS */ - -/* - * Error throwing helpers - */ - -#if defined(DUK_USE_VERBOSE_ERRORS) -#if defined(DUK_USE_PARANOID_ERRORS) -DUK_INTERNAL DUK_COLD void duk_err_require_type_index(duk_hthread *thr, - const char *filename, - duk_int_t linenumber, - duk_idx_t idx, - const char *expect_name) { - DUK_ERROR_RAW_FMT3(thr, - filename, - linenumber, - DUK_ERR_TYPE_ERROR, - "%s required, found %s (stack index %ld)", - expect_name, - duk_get_type_name(thr, idx), - (long) idx); -} -#else -DUK_INTERNAL DUK_COLD void duk_err_require_type_index(duk_hthread *thr, - const char *filename, - duk_int_t linenumber, - duk_idx_t idx, - const char *expect_name) { - DUK_ERROR_RAW_FMT3(thr, - filename, - linenumber, - DUK_ERR_TYPE_ERROR, - "%s required, found %s (stack index %ld)", - expect_name, - duk_push_string_readable(thr, idx), - (long) idx); -} -#endif -DUK_INTERNAL DUK_COLD void duk_err_error_internal(duk_hthread *thr, const char *filename, duk_int_t linenumber) { - DUK_ERROR_RAW(thr, filename, linenumber, DUK_ERR_ERROR, DUK_STR_INTERNAL_ERROR); -} -DUK_INTERNAL DUK_COLD void duk_err_error_alloc_failed(duk_hthread *thr, const char *filename, duk_int_t linenumber) { - DUK_ERROR_RAW(thr, filename, linenumber, DUK_ERR_ERROR, DUK_STR_ALLOC_FAILED); -} -DUK_INTERNAL DUK_COLD void duk_err_error(duk_hthread *thr, const char *filename, duk_int_t linenumber, const char *message) { - DUK_ERROR_RAW(thr, filename, linenumber, DUK_ERR_ERROR, message); -} -DUK_INTERNAL DUK_COLD void duk_err_range(duk_hthread *thr, const char *filename, duk_int_t linenumber, const char *message) { - DUK_ERROR_RAW(thr, filename, linenumber, DUK_ERR_RANGE_ERROR, message); -} -DUK_INTERNAL DUK_COLD void duk_err_range_index(duk_hthread *thr, const char *filename, duk_int_t linenumber, duk_idx_t idx) { - DUK_ERROR_RAW_FMT1(thr, filename, linenumber, DUK_ERR_RANGE_ERROR, "invalid stack index %ld", (long) (idx)); -} -DUK_INTERNAL DUK_COLD void duk_err_range_push_beyond(duk_hthread *thr, const char *filename, duk_int_t linenumber) { - DUK_ERROR_RAW(thr, filename, linenumber, DUK_ERR_RANGE_ERROR, DUK_STR_PUSH_BEYOND_ALLOC_STACK); -} -DUK_INTERNAL DUK_COLD void duk_err_type_invalid_args(duk_hthread *thr, const char *filename, duk_int_t linenumber) { - DUK_ERROR_RAW(thr, filename, linenumber, DUK_ERR_TYPE_ERROR, DUK_STR_INVALID_ARGS); -} -DUK_INTERNAL DUK_COLD void duk_err_type_invalid_state(duk_hthread *thr, const char *filename, duk_int_t linenumber) { - DUK_ERROR_RAW(thr, filename, linenumber, DUK_ERR_TYPE_ERROR, DUK_STR_INVALID_STATE); -} -DUK_INTERNAL DUK_COLD void duk_err_type_invalid_trap_result(duk_hthread *thr, const char *filename, duk_int_t linenumber) { - DUK_ERROR_RAW(thr, filename, linenumber, DUK_ERR_TYPE_ERROR, DUK_STR_INVALID_TRAP_RESULT); -} -#else -/* The file/line arguments are NULL and 0, they're ignored by DUK_ERROR_RAW() - * when non-verbose errors are used. - */ - -DUK_NORETURN(DUK_LOCAL_DECL void duk__err_shared(duk_hthread *thr, duk_errcode_t code)); -DUK_LOCAL void duk__err_shared(duk_hthread *thr, duk_errcode_t code) { - DUK_ERROR_RAW(thr, NULL, 0, code, NULL); -} -DUK_INTERNAL DUK_COLD void duk_err_error(duk_hthread *thr) { - duk__err_shared(thr, DUK_ERR_ERROR); -} -DUK_INTERNAL DUK_COLD void duk_err_range(duk_hthread *thr) { - duk__err_shared(thr, DUK_ERR_RANGE_ERROR); -} -DUK_INTERNAL DUK_COLD void duk_err_eval(duk_hthread *thr) { - duk__err_shared(thr, DUK_ERR_EVAL_ERROR); -} -DUK_INTERNAL DUK_COLD void duk_err_reference(duk_hthread *thr) { - duk__err_shared(thr, DUK_ERR_REFERENCE_ERROR); -} -DUK_INTERNAL DUK_COLD void duk_err_syntax(duk_hthread *thr) { - duk__err_shared(thr, DUK_ERR_SYNTAX_ERROR); -} -DUK_INTERNAL DUK_COLD void duk_err_type(duk_hthread *thr) { - duk__err_shared(thr, DUK_ERR_TYPE_ERROR); -} -DUK_INTERNAL DUK_COLD void duk_err_uri(duk_hthread *thr) { - duk__err_shared(thr, DUK_ERR_URI_ERROR); -} -#endif - -/* - * Default fatal error handler - */ - -DUK_INTERNAL DUK_COLD void duk_default_fatal_handler(void *udata, const char *msg) { - DUK_UNREF(udata); - DUK_UNREF(msg); - - msg = msg ? msg : "NULL"; - -#if defined(DUK_USE_FATAL_HANDLER) - /* duk_config.h provided a custom default fatal handler. */ - DUK_D(DUK_DPRINT("custom default fatal error handler called: %s", msg)); - DUK_USE_FATAL_HANDLER(udata, msg); -#elif defined(DUK_USE_CPP_EXCEPTIONS) - /* With C++ use a duk_fatal_exception which user code can catch in - * a natural way. - */ - DUK_D(DUK_DPRINT("built-in default C++ fatal error handler called: %s", msg)); - throw duk_fatal_exception(msg); -#else - /* Default behavior is to abort() on error. There's no printout - * which makes this awkward, so it's always recommended to use an - * explicit fatal error handler. - * - * ==================================================================== - * NOTE: If you are seeing this, you are most likely dealing with an - * uncaught error. You should provide a fatal error handler in Duktape - * heap creation, and should consider using a protected call as your - * first call into an empty Duktape context to properly handle errors. - * See: - * - http://duktape.org/guide.html#error-handling - * - http://wiki.duktape.org/HowtoFatalErrors.html - * - http://duktape.org/api.html#taglist-protected - * ==================================================================== - */ - DUK_D(DUK_DPRINT("built-in default fatal error handler called: %s", msg)); - DUK_ABORT(); -#endif - - DUK_D(DUK_DPRINT("fatal error handler returned, enter forever loop")); - for (;;) { - /* Loop forever to ensure we don't return. */ - } -} - -/* automatic undefs */ -#undef DUK__ERRFMT_BUFSIZE -#line 1 "duk_unicode_support.c" -/* - * Various Unicode help functions for character classification predicates, - * case conversion, decoding, etc. - */ - -/* #include duk_internal.h -> already included */ - -/* - * Fast path tables - */ - -#if defined(DUK_USE_IDCHAR_FASTPATH) -DUK_INTERNAL const duk_int8_t duk_is_idchar_tab[128] = { - /* 0: not IdentifierStart or IdentifierPart - * 1: IdentifierStart and IdentifierPart - * -1: IdentifierPart only - */ - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x00...0x0f */ - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x10...0x1f */ - 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x20...0x2f */ - -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, 0, 0, 0, 0, 0, /* 0x30...0x3f */ - 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 0x40...0x4f */ - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 1, /* 0x50...0x5f */ - 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 0x60...0x6f */ - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0 /* 0x70...0x7f */ -}; -#endif - -/* - * XUTF-8 and CESU-8 encoding/decoding - */ - -DUK_INTERNAL duk_small_int_t duk_unicode_get_xutf8_length(duk_ucodepoint_t cp) { - duk_uint_fast32_t x = (duk_uint_fast32_t) cp; - if (x < 0x80UL) { - /* 7 bits */ - return 1; - } else if (x < 0x800UL) { - /* 11 bits */ - return 2; - } else if (x < 0x10000UL) { - /* 16 bits */ - return 3; - } else if (x < 0x200000UL) { - /* 21 bits */ - return 4; - } else if (x < 0x4000000UL) { - /* 26 bits */ - return 5; - } else if (x < (duk_ucodepoint_t) 0x80000000UL) { - /* 31 bits */ - return 6; - } else { - /* 36 bits */ - return 7; - } -} - -#if defined(DUK_USE_ASSERTIONS) -DUK_INTERNAL duk_small_int_t duk_unicode_get_cesu8_length(duk_ucodepoint_t cp) { - duk_uint_fast32_t x = (duk_uint_fast32_t) cp; - if (x < 0x80UL) { - /* 7 bits */ - return 1; - } else if (x < 0x800UL) { - /* 11 bits */ - return 2; - } else if (x < 0x10000UL) { - /* 16 bits */ - return 3; - } else { - /* Encoded as surrogate pair, each encoding to 3 bytes for - * 6 bytes total. Codepoints above U+10FFFF encode as 6 bytes - * too, see duk_unicode_encode_cesu8(). - */ - return 3 + 3; - } -} -#endif /* DUK_USE_ASSERTIONS */ - -DUK_INTERNAL const duk_uint8_t duk_unicode_xutf8_markers[7] = { 0x00, 0xc0, 0xe0, 0xf0, 0xf8, 0xfc, 0xfe }; - -/* Encode to extended UTF-8; 'out' must have space for at least - * DUK_UNICODE_MAX_XUTF8_LENGTH bytes. Allows encoding of any - * 32-bit (unsigned) codepoint. - */ -DUK_INTERNAL duk_small_int_t duk_unicode_encode_xutf8(duk_ucodepoint_t cp, duk_uint8_t *out) { - duk_uint_fast32_t x = (duk_uint_fast32_t) cp; - duk_small_int_t len; - duk_uint8_t marker; - duk_small_int_t i; - - len = duk_unicode_get_xutf8_length(cp); - DUK_ASSERT(len > 0); - - marker = duk_unicode_xutf8_markers[len - 1]; /* 64-bit OK because always >= 0 */ - - i = len; - DUK_ASSERT(i > 0); - do { - i--; - if (i > 0) { - out[i] = (duk_uint8_t) (0x80 + (x & 0x3f)); - x >>= 6; - } else { - /* Note: masking of 'x' is not necessary because of - * range check and shifting -> no bits overlapping - * the marker should be set. - */ - out[0] = (duk_uint8_t) (marker + x); - } - } while (i > 0); - - return len; -} - -/* Encode to CESU-8; 'out' must have space for at least - * DUK_UNICODE_MAX_CESU8_LENGTH bytes; codepoints above U+10FFFF - * will encode to garbage but won't overwrite the output buffer. - */ -DUK_INTERNAL duk_small_int_t duk_unicode_encode_cesu8(duk_ucodepoint_t cp, duk_uint8_t *out) { - duk_uint_fast32_t x = (duk_uint_fast32_t) cp; - duk_small_int_t len; - - if (x < 0x80UL) { - out[0] = (duk_uint8_t) x; - len = 1; - } else if (x < 0x800UL) { - out[0] = (duk_uint8_t) (0xc0 + ((x >> 6) & 0x1f)); - out[1] = (duk_uint8_t) (0x80 + (x & 0x3f)); - len = 2; - } else if (x < 0x10000UL) { - /* surrogate pairs get encoded here */ - out[0] = (duk_uint8_t) (0xe0 + ((x >> 12) & 0x0f)); - out[1] = (duk_uint8_t) (0x80 + ((x >> 6) & 0x3f)); - out[2] = (duk_uint8_t) (0x80 + (x & 0x3f)); - len = 3; - } else { - /* - * Unicode codepoints above U+FFFF are encoded as surrogate - * pairs here. This ensures that all CESU-8 codepoints are - * 16-bit values as expected in ECMAScript. The surrogate - * pairs always get a 3-byte encoding (each) in CESU-8. - * See: http://en.wikipedia.org/wiki/Surrogate_pair - * - * 20-bit codepoint, 10 bits (A and B) per surrogate pair: - * - * x = 0b00000000 0000AAAA AAAAAABB BBBBBBBB - * sp1 = 0b110110AA AAAAAAAA (0xd800 + ((x >> 10) & 0x3ff)) - * sp2 = 0b110111BB BBBBBBBB (0xdc00 + (x & 0x3ff)) - * - * Encoded into CESU-8: - * - * sp1 -> 0b11101101 (0xe0 + ((sp1 >> 12) & 0x0f)) - * -> 0b1010AAAA (0x80 + ((sp1 >> 6) & 0x3f)) - * -> 0b10AAAAAA (0x80 + (sp1 & 0x3f)) - * sp2 -> 0b11101101 (0xe0 + ((sp2 >> 12) & 0x0f)) - * -> 0b1011BBBB (0x80 + ((sp2 >> 6) & 0x3f)) - * -> 0b10BBBBBB (0x80 + (sp2 & 0x3f)) - * - * Note that 0x10000 must be subtracted first. The code below - * avoids the sp1, sp2 temporaries which saves around 20 bytes - * of code. - */ - - x -= 0x10000UL; - - out[0] = (duk_uint8_t) (0xed); - out[1] = (duk_uint8_t) (0xa0 + ((x >> 16) & 0x0f)); - out[2] = (duk_uint8_t) (0x80 + ((x >> 10) & 0x3f)); - out[3] = (duk_uint8_t) (0xed); - out[4] = (duk_uint8_t) (0xb0 + ((x >> 6) & 0x0f)); - out[5] = (duk_uint8_t) (0x80 + (x & 0x3f)); - len = 6; - } - - return len; -} - -/* Decode helper. Return zero on error. */ -DUK_INTERNAL duk_small_int_t duk_unicode_decode_xutf8(duk_hthread *thr, - const duk_uint8_t **ptr, - const duk_uint8_t *ptr_start, - const duk_uint8_t *ptr_end, - duk_ucodepoint_t *out_cp) { - const duk_uint8_t *p; - duk_uint32_t res; - duk_uint_fast8_t ch; - duk_small_int_t n; - - DUK_UNREF(thr); - - p = *ptr; - if (p < ptr_start || p >= ptr_end) { - goto fail; - } - - /* - * UTF-8 decoder which accepts longer than standard byte sequences. - * This allows full 32-bit code points to be used. - */ - - ch = (duk_uint_fast8_t) (*p++); - if (ch < 0x80) { - /* 0xxx xxxx [7 bits] */ - res = (duk_uint32_t) (ch & 0x7f); - n = 0; - } else if (ch < 0xc0) { - /* 10xx xxxx -> invalid */ - goto fail; - } else if (ch < 0xe0) { - /* 110x xxxx 10xx xxxx [11 bits] */ - res = (duk_uint32_t) (ch & 0x1f); - n = 1; - } else if (ch < 0xf0) { - /* 1110 xxxx 10xx xxxx 10xx xxxx [16 bits] */ - res = (duk_uint32_t) (ch & 0x0f); - n = 2; - } else if (ch < 0xf8) { - /* 1111 0xxx 10xx xxxx 10xx xxxx 10xx xxxx [21 bits] */ - res = (duk_uint32_t) (ch & 0x07); - n = 3; - } else if (ch < 0xfc) { - /* 1111 10xx 10xx xxxx 10xx xxxx 10xx xxxx 10xx xxxx [26 bits] */ - res = (duk_uint32_t) (ch & 0x03); - n = 4; - } else if (ch < 0xfe) { - /* 1111 110x 10xx xxxx 10xx xxxx 10xx xxxx 10xx xxxx 10xx xxxx [31 bits] */ - res = (duk_uint32_t) (ch & 0x01); - n = 5; - } else if (ch < 0xff) { - /* 1111 1110 10xx xxxx 10xx xxxx 10xx xxxx 10xx xxxx 10xx xxxx 10xx xxxx [36 bits] */ - res = (duk_uint32_t) (0); - n = 6; - } else { - /* 8-byte format could be: - * 1111 1111 10xx xxxx 10xx xxxx 10xx xxxx 10xx xxxx 10xx xxxx 10xx xxxx 10xx xxxx [41 bits] - * - * However, this format would not have a zero bit following the - * leading one bits and would not allow 0xFF to be used as an - * "invalid xutf-8" marker for internal keys. Further, 8-byte - * encodings (up to 41 bit code points) are not currently needed. - */ - goto fail; - } - - DUK_ASSERT(p >= ptr_start); /* verified at beginning */ - if (p + n > ptr_end) { - /* check pointer at end */ - goto fail; - } - - while (n > 0) { - DUK_ASSERT(p >= ptr_start && p < ptr_end); - ch = (duk_uint_fast8_t) (*p++); -#if 0 - if (ch & 0xc0 != 0x80) { - /* not a continuation byte */ - p--; - *ptr = p; - *out_cp = DUK_UNICODE_CP_REPLACEMENT_CHARACTER; - return 1; - } -#endif - res = (res << 6) + (duk_uint32_t) (ch & 0x3f); - n--; - } - - *ptr = p; - *out_cp = res; - return 1; - -fail: - return 0; -} - -/* used by e.g. duk_regexp_executor.c, string built-ins */ -DUK_INTERNAL duk_ucodepoint_t duk_unicode_decode_xutf8_checked(duk_hthread *thr, - const duk_uint8_t **ptr, - const duk_uint8_t *ptr_start, - const duk_uint8_t *ptr_end) { - duk_ucodepoint_t cp; - - if (duk_unicode_decode_xutf8(thr, ptr, ptr_start, ptr_end, &cp)) { - return cp; - } - DUK_ERROR_INTERNAL(thr); - DUK_WO_NORETURN(return 0;); -} - -/* Compute (extended) utf-8 length without codepoint encoding validation, - * used for string interning. - * - * NOTE: This algorithm is performance critical, more so than string hashing - * in some cases. It is needed when interning a string and needs to scan - * every byte of the string with no skipping. Having an ASCII fast path - * is useful if possible in the algorithm. The current algorithms were - * chosen from several variants, based on x64 gcc -O2 testing. See: - * https://github.com/svaarala/duktape/pull/422 - * - * NOTE: must match tools/dukutil.py:duk_unicode_unvalidated_utf8_length(). - */ - -#if defined(DUK_USE_PREFER_SIZE) -/* Small variant; roughly 150 bytes smaller than the fast variant. */ -DUK_INTERNAL duk_size_t duk_unicode_unvalidated_utf8_length(const duk_uint8_t *data, duk_size_t blen) { - const duk_uint8_t *p; - const duk_uint8_t *p_end; - duk_size_t ncont; - duk_size_t clen; - - p = data; - p_end = data + blen; - ncont = 0; - while (p != p_end) { - duk_uint8_t x; - x = *p++; - if (DUK_UNLIKELY(x >= 0x80 && x <= 0xbf)) { - ncont++; - } - } - - DUK_ASSERT(ncont <= blen); - clen = blen - ncont; - DUK_ASSERT(clen <= blen); - return clen; -} -#else /* DUK_USE_PREFER_SIZE */ -/* This seems like a good overall approach. Fast path for ASCII in 4 byte - * blocks. - */ -DUK_INTERNAL duk_size_t duk_unicode_unvalidated_utf8_length(const duk_uint8_t *data, duk_size_t blen) { - const duk_uint8_t *p; - const duk_uint8_t *p_end; - const duk_uint32_t *p32_end; - const duk_uint32_t *p32; - duk_size_t ncont; - duk_size_t clen; - - ncont = 0; /* number of continuation (non-initial) bytes in [0x80,0xbf] */ - p = data; - p_end = data + blen; - if (blen < 16) { - goto skip_fastpath; - } - - /* Align 'p' to 4; the input data may have arbitrary alignment. - * End of string check not needed because blen >= 16. - */ - while (((duk_size_t) (const void *) p) & 0x03U) { - duk_uint8_t x; - x = *p++; - if (DUK_UNLIKELY(x >= 0x80 && x <= 0xbf)) { - ncont++; - } - } - - /* Full, aligned 4-byte reads. */ - p32_end = (const duk_uint32_t *) (const void *) (p + ((duk_size_t) (p_end - p) & (duk_size_t) (~0x03))); - p32 = (const duk_uint32_t *) (const void *) p; - while (p32 != (const duk_uint32_t *) p32_end) { - duk_uint32_t x; - x = *p32++; - if (DUK_LIKELY((x & 0x80808080UL) == 0)) { - ; /* ASCII fast path */ - } else { - /* Flip highest bit of each byte which changes - * the bit pattern 10xxxxxx into 00xxxxxx which - * allows an easy bit mask test. - */ - x ^= 0x80808080UL; - if (DUK_UNLIKELY(!(x & 0xc0000000UL))) { - ncont++; - } - if (DUK_UNLIKELY(!(x & 0x00c00000UL))) { - ncont++; - } - if (DUK_UNLIKELY(!(x & 0x0000c000UL))) { - ncont++; - } - if (DUK_UNLIKELY(!(x & 0x000000c0UL))) { - ncont++; - } - } - } - p = (const duk_uint8_t *) p32; - /* Fall through to handle the rest. */ - -skip_fastpath: - while (p != p_end) { - duk_uint8_t x; - x = *p++; - if (DUK_UNLIKELY(x >= 0x80 && x <= 0xbf)) { - ncont++; - } - } - - DUK_ASSERT(ncont <= blen); - clen = blen - ncont; - DUK_ASSERT(clen <= blen); - return clen; -} -#endif /* DUK_USE_PREFER_SIZE */ - -/* Check whether a string is UTF-8 compatible or not. */ -DUK_INTERNAL duk_bool_t duk_unicode_is_utf8_compatible(const duk_uint8_t *buf, duk_size_t len) { - duk_size_t i = 0; -#if !defined(DUK_USE_PREFER_SIZE) - duk_size_t len_safe; -#endif - - /* Many practical strings are ASCII only, so use a fast path check - * to check chunks of bytes at once with minimal branch cost. - */ -#if !defined(DUK_USE_PREFER_SIZE) - len_safe = len & ~0x03UL; - for (; i < len_safe; i += 4) { - duk_uint8_t t = buf[i] | buf[i + 1] | buf[i + 2] | buf[i + 3]; - if (DUK_UNLIKELY((t & 0x80U) != 0U)) { - /* At least one byte was outside 0x00-0x7f, break - * out to slow path (and remain there). - * - * XXX: We could also deal with the problem character - * and resume fast path later. - */ - break; - } - } -#endif - - for (; i < len;) { - duk_uint8_t t; - duk_size_t left; - duk_size_t ncont; - duk_uint32_t cp; - duk_uint32_t mincp; - - t = buf[i++]; - if (DUK_LIKELY((t & 0x80U) == 0U)) { - /* Fast path, ASCII. */ - continue; - } - - /* Non-ASCII start byte, slow path. - * - * 10xx xxxx -> continuation byte - * 110x xxxx + 1*CONT -> [0x80, 0x7ff] - * 1110 xxxx + 2*CONT -> [0x800, 0xffff], must reject [0xd800,0xdfff] - * 1111 0xxx + 3*CONT -> [0x10000, 0x10ffff] - */ - left = len - i; - if (t <= 0xdfU) { /* 1101 1111 = 0xdf */ - if (t <= 0xbfU) { /* 1011 1111 = 0xbf */ - return 0; - } - ncont = 1; - mincp = 0x80UL; - cp = t & 0x1fU; - } else if (t <= 0xefU) { /* 1110 1111 = 0xef */ - ncont = 2; - mincp = 0x800UL; - cp = t & 0x0fU; - } else if (t <= 0xf7U) { /* 1111 0111 = 0xf7 */ - ncont = 3; - mincp = 0x10000UL; - cp = t & 0x07U; - } else { - return 0; - } - if (left < ncont) { - return 0; - } - while (ncont > 0U) { - t = buf[i++]; - if ((t & 0xc0U) != 0x80U) { /* 10xx xxxx */ - return 0; - } - cp = (cp << 6) + (t & 0x3fU); - ncont--; - } - if (cp < mincp || cp > 0x10ffffUL || (cp >= 0xd800UL && cp <= 0xdfffUL)) { - return 0; - } - } - - return 1; -} - -/* - * Unicode range matcher - * - * Matches a codepoint against a packed bitstream of character ranges. - * Used for slow path Unicode matching. - */ - -/* Must match tools/extract_chars.py, generate_match_table3(). */ -DUK_LOCAL duk_uint32_t duk__uni_decode_value(duk_bitdecoder_ctx *bd_ctx) { - duk_uint32_t t; - - t = (duk_uint32_t) duk_bd_decode(bd_ctx, 4); - if (t <= 0x0eU) { - return t; - } - t = (duk_uint32_t) duk_bd_decode(bd_ctx, 8); - if (t <= 0xfdU) { - return t + 0x0f; - } - if (t == 0xfeU) { - t = (duk_uint32_t) duk_bd_decode(bd_ctx, 12); - return t + 0x0fU + 0xfeU; - } else { - t = (duk_uint32_t) duk_bd_decode(bd_ctx, 24); - return t + 0x0fU + 0xfeU + 0x1000UL; - } -} - -DUK_LOCAL duk_small_int_t duk__uni_range_match(const duk_uint8_t *unitab, duk_size_t unilen, duk_codepoint_t cp) { - duk_bitdecoder_ctx bd_ctx; - duk_codepoint_t prev_re; - - duk_memzero(&bd_ctx, sizeof(bd_ctx)); - bd_ctx.data = (const duk_uint8_t *) unitab; - bd_ctx.length = (duk_size_t) unilen; - - prev_re = 0; - for (;;) { - duk_codepoint_t r1, r2; - r1 = (duk_codepoint_t) duk__uni_decode_value(&bd_ctx); - if (r1 == 0) { - break; - } - r2 = (duk_codepoint_t) duk__uni_decode_value(&bd_ctx); - - r1 = prev_re + r1; - r2 = r1 + r2; - prev_re = r2; - - /* [r1,r2] is the range */ - - DUK_DDD(DUK_DDDPRINT("duk__uni_range_match: cp=%06lx range=[0x%06lx,0x%06lx]", - (unsigned long) cp, - (unsigned long) r1, - (unsigned long) r2)); - if (cp >= r1 && cp <= r2) { - return 1; - } - } - - return 0; -} - -/* - * "WhiteSpace" production check. - */ - -DUK_INTERNAL duk_small_int_t duk_unicode_is_whitespace(duk_codepoint_t cp) { - /* - * E5 Section 7.2 specifies six characters specifically as - * white space: - * - * 0009;;Cc;0;S;;;;;N;CHARACTER TABULATION;;;; - * 000B;;Cc;0;S;;;;;N;LINE TABULATION;;;; - * 000C;;Cc;0;WS;;;;;N;FORM FEED (FF);;;; - * 0020;SPACE;Zs;0;WS;;;;;N;;;;; - * 00A0;NO-BREAK SPACE;Zs;0;CS; 0020;;;;N;NON-BREAKING SPACE;;;; - * FEFF;ZERO WIDTH NO-BREAK SPACE;Cf;0;BN;;;;;N;BYTE ORDER MARK;;;; - * - * It also specifies any Unicode category 'Zs' characters as white - * space. These can be extracted with the "tools/extract_chars.py" script. - * Current result: - * - * RAW OUTPUT: - * =========== - * 0020;SPACE;Zs;0;WS;;;;;N;;;;; - * 00A0;NO-BREAK SPACE;Zs;0;CS; 0020;;;;N;NON-BREAKING SPACE;;;; - * 1680;OGHAM SPACE MARK;Zs;0;WS;;;;;N;;;;; - * 180E;MONGOLIAN VOWEL SEPARATOR;Zs;0;WS;;;;;N;;;;; - * 2000;EN QUAD;Zs;0;WS;2002;;;;N;;;;; - * 2001;EM QUAD;Zs;0;WS;2003;;;;N;;;;; - * 2002;EN SPACE;Zs;0;WS; 0020;;;;N;;;;; - * 2003;EM SPACE;Zs;0;WS; 0020;;;;N;;;;; - * 2004;THREE-PER-EM SPACE;Zs;0;WS; 0020;;;;N;;;;; - * 2005;FOUR-PER-EM SPACE;Zs;0;WS; 0020;;;;N;;;;; - * 2006;SIX-PER-EM SPACE;Zs;0;WS; 0020;;;;N;;;;; - * 2007;FIGURE SPACE;Zs;0;WS; 0020;;;;N;;;;; - * 2008;PUNCTUATION SPACE;Zs;0;WS; 0020;;;;N;;;;; - * 2009;THIN SPACE;Zs;0;WS; 0020;;;;N;;;;; - * 200A;HAIR SPACE;Zs;0;WS; 0020;;;;N;;;;; - * 202F;NARROW NO-BREAK SPACE;Zs;0;CS; 0020;;;;N;;;;; - * 205F;MEDIUM MATHEMATICAL SPACE;Zs;0;WS; 0020;;;;N;;;;; - * 3000;IDEOGRAPHIC SPACE;Zs;0;WS; 0020;;;;N;;;;; - * - * RANGES: - * ======= - * 0x0020 - * 0x00a0 - * 0x1680 - * 0x180e - * 0x2000 ... 0x200a - * 0x202f - * 0x205f - * 0x3000 - * - * A manual decoder (below) is probably most compact for this. - */ - - duk_uint_fast8_t lo; - duk_uint_fast32_t hi; - - /* cp == -1 (EOF) never matches and causes return value 0 */ - - lo = (duk_uint_fast8_t) (cp & 0xff); - hi = (duk_uint_fast32_t) (cp >> 8); /* does not fit into an uchar */ - - if (hi == 0x0000UL) { - if (lo == 0x09U || lo == 0x0bU || lo == 0x0cU || lo == 0x20U || lo == 0xa0U) { - return 1; - } - } else if (hi == 0x0020UL) { - if (lo <= 0x0aU || lo == 0x2fU || lo == 0x5fU) { - return 1; - } - } else if (cp == 0x1680L || cp == 0x180eL || cp == 0x3000L || cp == 0xfeffL) { - return 1; - } - - return 0; -} - -/* - * "LineTerminator" production check. - */ - -DUK_INTERNAL duk_small_int_t duk_unicode_is_line_terminator(duk_codepoint_t cp) { - /* - * E5 Section 7.3 - * - * A LineTerminatorSequence essentially merges sequences - * into a single line terminator. This must be handled by the caller. - */ - - if (cp == 0x000aL || cp == 0x000dL || cp == 0x2028L || cp == 0x2029L) { - return 1; - } - - return 0; -} - -/* - * "IdentifierStart" production check. - */ - -DUK_INTERNAL duk_small_int_t duk_unicode_is_identifier_start(duk_codepoint_t cp) { - /* - * E5 Section 7.6: - * - * IdentifierStart: - * UnicodeLetter - * $ - * _ - * \ UnicodeEscapeSequence - * - * IdentifierStart production has one multi-character production: - * - * \ UnicodeEscapeSequence - * - * The '\' character is -not- matched by this function. Rather, the caller - * should decode the escape and then call this function to check whether the - * decoded character is acceptable (see discussion in E5 Section 7.6). - * - * The "UnicodeLetter" alternative of the production allows letters - * from various Unicode categories. These can be extracted with the - * "tools/extract_chars.py" script. - * - * Because the result has hundreds of Unicode codepoint ranges, matching - * for any values >= 0x80 are done using a very slow range-by-range scan - * and a packed range format. - * - * The ASCII portion (codepoints 0x00 ... 0x7f) is fast-pathed below because - * it matters the most. The ASCII related ranges of IdentifierStart are: - * - * 0x0041 ... 0x005a ['A' ... 'Z'] - * 0x0061 ... 0x007a ['a' ... 'z'] - * 0x0024 ['$'] - * 0x005f ['_'] - */ - - /* ASCII (and EOF) fast path -- quick accept and reject */ - if (cp <= 0x7fL) { -#if defined(DUK_USE_IDCHAR_FASTPATH) - return (cp >= 0) && (duk_is_idchar_tab[cp] > 0); -#else - if ((cp >= 'a' && cp <= 'z') || (cp >= 'A' && cp <= 'Z') || cp == '_' || cp == '$') { - return 1; - } - return 0; -#endif - } - - /* Non-ASCII slow path (range-by-range linear comparison), very slow */ - -#if defined(DUK_USE_SOURCE_NONBMP) - if (duk__uni_range_match(duk_unicode_ids_noa, (duk_size_t) sizeof(duk_unicode_ids_noa), (duk_codepoint_t) cp)) { - return 1; - } - return 0; -#else - if (cp < 0x10000L) { - if (duk__uni_range_match(duk_unicode_ids_noabmp, sizeof(duk_unicode_ids_noabmp), (duk_codepoint_t) cp)) { - return 1; - } - return 0; - } else { - /* without explicit non-BMP support, assume non-BMP characters - * are always accepted as identifier characters. - */ - return 1; - } -#endif -} - -/* - * "IdentifierPart" production check. - */ - -DUK_INTERNAL duk_small_int_t duk_unicode_is_identifier_part(duk_codepoint_t cp) { - /* - * E5 Section 7.6: - * - * IdentifierPart: - * IdentifierStart - * UnicodeCombiningMark - * UnicodeDigit - * UnicodeConnectorPunctuation - * [U+200C] - * [U+200D] - * - * IdentifierPart production has one multi-character production - * as part of its IdentifierStart alternative. The '\' character - * of an escape sequence is not matched here, see discussion in - * duk_unicode_is_identifier_start(). - * - * To match non-ASCII characters (codepoints >= 0x80), a very slow - * linear range-by-range scan is used. The codepoint is first compared - * to the IdentifierStart ranges, and if it doesn't match, then to a - * set consisting of code points in IdentifierPart but not in - * IdentifierStart. This is done to keep the unicode range data small, - * at the expense of speed. - * - * The ASCII fast path consists of: - * - * 0x0030 ... 0x0039 ['0' ... '9', UnicodeDigit] - * 0x0041 ... 0x005a ['A' ... 'Z', IdentifierStart] - * 0x0061 ... 0x007a ['a' ... 'z', IdentifierStart] - * 0x0024 ['$', IdentifierStart] - * 0x005f ['_', IdentifierStart and - * UnicodeConnectorPunctuation] - * - * UnicodeCombiningMark has no code points <= 0x7f. - * - * The matching code reuses the "identifier start" tables, and then - * consults a separate range set for characters in "identifier part" - * but not in "identifier start". These can be extracted with the - * "tools/extract_chars.py" script. - * - * UnicodeCombiningMark -> categories Mn, Mc - * UnicodeDigit -> categories Nd - * UnicodeConnectorPunctuation -> categories Pc - */ - - /* ASCII (and EOF) fast path -- quick accept and reject */ - if (cp <= 0x7fL) { -#if defined(DUK_USE_IDCHAR_FASTPATH) - return (cp >= 0) && (duk_is_idchar_tab[cp] != 0); -#else - if ((cp >= 'a' && cp <= 'z') || (cp >= 'A' && cp <= 'Z') || (cp >= '0' && cp <= '9') || cp == '_' || cp == '$') { - return 1; - } - return 0; -#endif - } - - /* Non-ASCII slow path (range-by-range linear comparison), very slow */ - -#if defined(DUK_USE_SOURCE_NONBMP) - if (duk__uni_range_match(duk_unicode_ids_noa, sizeof(duk_unicode_ids_noa), (duk_codepoint_t) cp) || - duk__uni_range_match(duk_unicode_idp_m_ids_noa, sizeof(duk_unicode_idp_m_ids_noa), (duk_codepoint_t) cp)) { - return 1; - } - return 0; -#else - if (cp < 0x10000L) { - if (duk__uni_range_match(duk_unicode_ids_noabmp, sizeof(duk_unicode_ids_noabmp), (duk_codepoint_t) cp) || - duk__uni_range_match(duk_unicode_idp_m_ids_noabmp, - sizeof(duk_unicode_idp_m_ids_noabmp), - (duk_codepoint_t) cp)) { - return 1; - } - return 0; - } else { - /* without explicit non-BMP support, assume non-BMP characters - * are always accepted as identifier characters. - */ - return 1; - } -#endif -} - -/* - * Unicode letter check. - */ - -DUK_INTERNAL duk_small_int_t duk_unicode_is_letter(duk_codepoint_t cp) { - /* - * Unicode letter is now taken to be the categories: - * - * Lu, Ll, Lt, Lm, Lo - * - * (Not sure if this is exactly correct.) - * - * The ASCII fast path consists of: - * - * 0x0041 ... 0x005a ['A' ... 'Z'] - * 0x0061 ... 0x007a ['a' ... 'z'] - */ - - /* ASCII (and EOF) fast path -- quick accept and reject */ - if (cp <= 0x7fL) { - if ((cp >= 'a' && cp <= 'z') || (cp >= 'A' && cp <= 'Z')) { - return 1; - } - return 0; - } - - /* Non-ASCII slow path (range-by-range linear comparison), very slow */ - -#if defined(DUK_USE_SOURCE_NONBMP) - if (duk__uni_range_match(duk_unicode_ids_noa, sizeof(duk_unicode_ids_noa), (duk_codepoint_t) cp) && - !duk__uni_range_match(duk_unicode_ids_m_let_noa, sizeof(duk_unicode_ids_m_let_noa), (duk_codepoint_t) cp)) { - return 1; - } - return 0; -#else - if (cp < 0x10000L) { - if (duk__uni_range_match(duk_unicode_ids_noabmp, sizeof(duk_unicode_ids_noabmp), (duk_codepoint_t) cp) && - !duk__uni_range_match(duk_unicode_ids_m_let_noabmp, - sizeof(duk_unicode_ids_m_let_noabmp), - (duk_codepoint_t) cp)) { - return 1; - } - return 0; - } else { - /* without explicit non-BMP support, assume non-BMP characters - * are always accepted as letters. - */ - return 1; - } -#endif -} - -/* - * Complex case conversion helper which decodes a bit-packed conversion - * control stream generated by tools/extract_caseconv.py. The conversion - * is very slow because it runs through the conversion data in a linear - * fashion to save space (which is why ASCII characters have a special - * fast path before arriving here). - * - * The particular bit counts etc have been determined experimentally to - * be small but still sufficient, and must match the Python script - * (tools/extract_caseconv.py). - * - * The return value is the case converted codepoint or -1 if the conversion - * results in multiple characters (this is useful for regexp Canonicalization - * operation). If 'buf' is not NULL, the result codepoint(s) are also - * appended to the hbuffer. - * - * Context and locale specific rules must be checked before consulting - * this function. - */ - -DUK_LOCAL -duk_codepoint_t duk__slow_case_conversion(duk_hthread *thr, duk_bufwriter_ctx *bw, duk_codepoint_t cp, duk_bitdecoder_ctx *bd_ctx) { - duk_small_int_t skip = 0; - duk_small_int_t n; - duk_small_int_t t; - duk_small_int_t count; - duk_codepoint_t tmp_cp; - duk_codepoint_t start_i; - duk_codepoint_t start_o; - - DUK_ASSERT(bd_ctx != NULL); - DUK_UNREF(thr); - - DUK_DDD(DUK_DDDPRINT("slow case conversion for codepoint: %ld", (long) cp)); - - /* range conversion with a "skip" */ - DUK_DDD(DUK_DDDPRINT("checking ranges")); - for (;;) { - skip++; - n = (duk_small_int_t) duk_bd_decode(bd_ctx, 6); - if (n == 0x3f) { - /* end marker */ - break; - } - DUK_DDD(DUK_DDDPRINT("skip=%ld, n=%ld", (long) skip, (long) n)); - - while (n--) { - start_i = (duk_codepoint_t) duk_bd_decode(bd_ctx, 16); - start_o = (duk_codepoint_t) duk_bd_decode(bd_ctx, 16); - count = (duk_small_int_t) duk_bd_decode(bd_ctx, 7); - DUK_DDD(DUK_DDDPRINT("range: start_i=%ld, start_o=%ld, count=%ld, skip=%ld", - (long) start_i, - (long) start_o, - (long) count, - (long) skip)); - - if (cp >= start_i) { - tmp_cp = cp - start_i; /* always >= 0 */ - if (tmp_cp < (duk_codepoint_t) count * (duk_codepoint_t) skip && - (tmp_cp % (duk_codepoint_t) skip) == 0) { - DUK_DDD(DUK_DDDPRINT("range matches input codepoint")); - cp = start_o + tmp_cp; - goto single; - } - } - } - } - - /* 1:1 conversion */ - n = (duk_small_int_t) duk_bd_decode(bd_ctx, 7); - DUK_DDD(DUK_DDDPRINT("checking 1:1 conversions (count %ld)", (long) n)); - while (n--) { - start_i = (duk_codepoint_t) duk_bd_decode(bd_ctx, 16); - start_o = (duk_codepoint_t) duk_bd_decode(bd_ctx, 16); - DUK_DDD(DUK_DDDPRINT("1:1 conversion %ld -> %ld", (long) start_i, (long) start_o)); - if (cp == start_i) { - DUK_DDD(DUK_DDDPRINT("1:1 matches input codepoint")); - cp = start_o; - goto single; - } - } - - /* complex, multicharacter conversion */ - n = (duk_small_int_t) duk_bd_decode(bd_ctx, 7); - DUK_DDD(DUK_DDDPRINT("checking 1:n conversions (count %ld)", (long) n)); - while (n--) { - start_i = (duk_codepoint_t) duk_bd_decode(bd_ctx, 16); - t = (duk_small_int_t) duk_bd_decode(bd_ctx, 2); - DUK_DDD(DUK_DDDPRINT("1:n conversion %ld -> %ld chars", (long) start_i, (long) t)); - if (cp == start_i) { - DUK_DDD(DUK_DDDPRINT("1:n matches input codepoint")); - if (bw != NULL) { - while (t--) { - tmp_cp = (duk_codepoint_t) duk_bd_decode(bd_ctx, 16); - DUK_BW_WRITE_RAW_XUTF8(thr, bw, (duk_ucodepoint_t) tmp_cp); - } - } - return -1; - } else { - while (t--) { - (void) duk_bd_decode(bd_ctx, 16); - } - } - } - - /* default: no change */ - DUK_DDD(DUK_DDDPRINT("no rule matches, output is same as input")); - /* fall through */ - -single: - if (bw != NULL) { - DUK_BW_WRITE_RAW_XUTF8(thr, bw, (duk_ucodepoint_t) cp); - } - return cp; -} - -/* - * Case conversion helper, with context/local sensitivity. - * For proper case conversion, one needs to know the character - * and the preceding and following characters, as well as - * locale/language. - */ - -/* XXX: add 'language' argument when locale/language sensitive rule - * support added. - */ -DUK_LOCAL -duk_codepoint_t duk__case_transform_helper(duk_hthread *thr, - duk_bufwriter_ctx *bw, - duk_codepoint_t cp, - duk_codepoint_t prev, - duk_codepoint_t next, - duk_bool_t uppercase) { - duk_bitdecoder_ctx bd_ctx; - - /* fast path for ASCII */ - if (cp < 0x80L) { - /* XXX: there are language sensitive rules for the ASCII range. - * If/when language/locale support is implemented, they need to - * be implemented here for the fast path. There are no context - * sensitive rules for ASCII range. - */ - - if (uppercase) { - if (cp >= 'a' && cp <= 'z') { - cp = cp - 'a' + 'A'; - } - } else { - if (cp >= 'A' && cp <= 'Z') { - cp = cp - 'A' + 'a'; - } - } - - if (bw != NULL) { - DUK_BW_WRITE_RAW_U8(thr, bw, (duk_uint8_t) cp); - } - return cp; - } - - /* context and locale specific rules which cannot currently be represented - * in the caseconv bitstream: hardcoded rules in C - */ - if (uppercase) { - /* XXX: turkish / azeri */ - } else { - /* - * Final sigma context specific rule. This is a rather tricky - * rule and this handling is probably not 100% correct now. - * The rule is not locale/language specific so it is supported. - */ - - if (cp == 0x03a3L && /* U+03A3 = GREEK CAPITAL LETTER SIGMA */ - duk_unicode_is_letter(prev) && /* prev exists and is not a letter */ - !duk_unicode_is_letter(next)) { /* next does not exist or next is not a letter */ - /* Capital sigma occurred at "end of word", lowercase to - * U+03C2 = GREEK SMALL LETTER FINAL SIGMA. Otherwise - * fall through and let the normal rules lowercase it to - * U+03C3 = GREEK SMALL LETTER SIGMA. - */ - cp = 0x03c2L; - goto singlechar; - } - - /* XXX: lithuanian not implemented */ - /* XXX: lithuanian, explicit dot rules */ - /* XXX: turkish / azeri, lowercase rules */ - } - - /* 1:1 or special conversions, but not locale/context specific: script generated rules */ - duk_memzero(&bd_ctx, sizeof(bd_ctx)); - if (uppercase) { - bd_ctx.data = (const duk_uint8_t *) duk_unicode_caseconv_uc; - bd_ctx.length = (duk_size_t) sizeof(duk_unicode_caseconv_uc); - } else { - bd_ctx.data = (const duk_uint8_t *) duk_unicode_caseconv_lc; - bd_ctx.length = (duk_size_t) sizeof(duk_unicode_caseconv_lc); - } - return duk__slow_case_conversion(thr, bw, cp, &bd_ctx); - -singlechar: - if (bw != NULL) { - DUK_BW_WRITE_RAW_XUTF8(thr, bw, (duk_ucodepoint_t) cp); - } - return cp; - - /* unused now, not needed until Turkish/Azeri */ -#if 0 - nochar: - return -1; -#endif -} - -/* - * Replace valstack top with case converted version. - */ - -DUK_INTERNAL void duk_unicode_case_convert_string(duk_hthread *thr, duk_bool_t uppercase) { - duk_hstring *h_input; - duk_bufwriter_ctx bw_alloc; - duk_bufwriter_ctx *bw; - const duk_uint8_t *p, *p_start, *p_end; - duk_codepoint_t prev, curr, next; - - h_input = duk_require_hstring(thr, -1); /* Accept symbols. */ - DUK_ASSERT(h_input != NULL); - - bw = &bw_alloc; - DUK_BW_INIT_PUSHBUF(thr, bw, DUK_HSTRING_GET_BYTELEN(h_input)); - - /* [ ... input buffer ] */ - - p_start = (const duk_uint8_t *) DUK_HSTRING_GET_DATA(h_input); - p_end = p_start + DUK_HSTRING_GET_BYTELEN(h_input); - p = p_start; - - prev = -1; - DUK_UNREF(prev); - curr = -1; - next = -1; - for (;;) { - prev = curr; - curr = next; - next = -1; - if (p < p_end) { - next = (duk_codepoint_t) duk_unicode_decode_xutf8_checked(thr, &p, p_start, p_end); - } else { - /* end of input and last char has been processed */ - if (curr < 0) { - break; - } - } - - /* on first round, skip */ - if (curr >= 0) { - /* XXX: could add a fast path to process chunks of input codepoints, - * but relative benefit would be quite small. - */ - - /* Ensure space for maximum multi-character result; estimate is overkill. */ - DUK_BW_ENSURE(thr, bw, 8 * DUK_UNICODE_MAX_XUTF8_LENGTH); - - duk__case_transform_helper(thr, bw, (duk_codepoint_t) curr, prev, next, uppercase); - } - } - - DUK_BW_COMPACT(thr, bw); - (void) duk_buffer_to_string(thr, -1); /* Safe, output is encoded. */ - /* invalidates h_buf pointer */ - duk_remove_m2(thr); -} - -#if defined(DUK_USE_REGEXP_SUPPORT) - -/* - * Canonicalize() abstract operation needed for canonicalization of individual - * codepoints during regexp compilation and execution, see E5 Section 15.10.2.8. - * Note that codepoints are canonicalized one character at a time, so no context - * specific rules can apply. Locale specific rules can apply, though. - */ - -DUK_INTERNAL duk_codepoint_t duk_unicode_re_canonicalize_char(duk_hthread *thr, duk_codepoint_t cp) { -#if defined(DUK_USE_REGEXP_CANON_WORKAROUND) - /* Fast canonicalization lookup at the cost of 128kB footprint. */ - DUK_ASSERT(cp >= 0); - DUK_UNREF(thr); - if (DUK_LIKELY(cp < 0x10000L)) { - return (duk_codepoint_t) duk_unicode_re_canon_lookup[cp]; - } - return cp; -#else /* DUK_USE_REGEXP_CANON_WORKAROUND */ - duk_codepoint_t y; - - y = duk__case_transform_helper(thr, - NULL, /* NULL is allowed, no output */ - cp, /* curr char */ - -1, /* prev char */ - -1, /* next char */ - 1); /* uppercase */ - - if ((y < 0) || (cp >= 0x80 && y < 0x80)) { - /* multiple codepoint conversion or non-ASCII mapped to ASCII - * --> leave as is. - */ - return cp; - } - - return y; -#endif /* DUK_USE_REGEXP_CANON_WORKAROUND */ -} - -/* - * E5 Section 15.10.2.6 "IsWordChar" abstract operation. Assume - * x < 0 for characters read outside the string. - */ - -DUK_INTERNAL duk_small_int_t duk_unicode_re_is_wordchar(duk_codepoint_t x) { - /* - * Note: the description in E5 Section 15.10.2.6 has a typo, it - * contains 'A' twice and lacks 'a'; the intent is [0-9a-zA-Z_]. - */ - if ((x >= '0' && x <= '9') || (x >= 'a' && x <= 'z') || (x >= 'A' && x <= 'Z') || (x == '_')) { - return 1; - } - return 0; -} - -/* - * Regexp range tables - */ - -/* exposed because lexer needs these too */ -DUK_INTERNAL const duk_uint16_t duk_unicode_re_ranges_digit[2] = { - (duk_uint16_t) 0x0030UL, - (duk_uint16_t) 0x0039UL, -}; -DUK_INTERNAL const duk_uint16_t duk_unicode_re_ranges_white[22] = { - (duk_uint16_t) 0x0009UL, (duk_uint16_t) 0x000DUL, (duk_uint16_t) 0x0020UL, (duk_uint16_t) 0x0020UL, (duk_uint16_t) 0x00A0UL, - (duk_uint16_t) 0x00A0UL, (duk_uint16_t) 0x1680UL, (duk_uint16_t) 0x1680UL, (duk_uint16_t) 0x180EUL, (duk_uint16_t) 0x180EUL, - (duk_uint16_t) 0x2000UL, (duk_uint16_t) 0x200AUL, (duk_uint16_t) 0x2028UL, (duk_uint16_t) 0x2029UL, (duk_uint16_t) 0x202FUL, - (duk_uint16_t) 0x202FUL, (duk_uint16_t) 0x205FUL, (duk_uint16_t) 0x205FUL, (duk_uint16_t) 0x3000UL, (duk_uint16_t) 0x3000UL, - (duk_uint16_t) 0xFEFFUL, (duk_uint16_t) 0xFEFFUL, -}; -DUK_INTERNAL const duk_uint16_t duk_unicode_re_ranges_wordchar[8] = { - (duk_uint16_t) 0x0030UL, (duk_uint16_t) 0x0039UL, (duk_uint16_t) 0x0041UL, (duk_uint16_t) 0x005AUL, - (duk_uint16_t) 0x005FUL, (duk_uint16_t) 0x005FUL, (duk_uint16_t) 0x0061UL, (duk_uint16_t) 0x007AUL, -}; -DUK_INTERNAL const duk_uint16_t duk_unicode_re_ranges_not_digit[4] = { - (duk_uint16_t) 0x0000UL, - (duk_uint16_t) 0x002FUL, - (duk_uint16_t) 0x003AUL, - (duk_uint16_t) 0xFFFFUL, -}; -DUK_INTERNAL const duk_uint16_t duk_unicode_re_ranges_not_white[24] = { - (duk_uint16_t) 0x0000UL, (duk_uint16_t) 0x0008UL, (duk_uint16_t) 0x000EUL, (duk_uint16_t) 0x001FUL, (duk_uint16_t) 0x0021UL, - (duk_uint16_t) 0x009FUL, (duk_uint16_t) 0x00A1UL, (duk_uint16_t) 0x167FUL, (duk_uint16_t) 0x1681UL, (duk_uint16_t) 0x180DUL, - (duk_uint16_t) 0x180FUL, (duk_uint16_t) 0x1FFFUL, (duk_uint16_t) 0x200BUL, (duk_uint16_t) 0x2027UL, (duk_uint16_t) 0x202AUL, - (duk_uint16_t) 0x202EUL, (duk_uint16_t) 0x2030UL, (duk_uint16_t) 0x205EUL, (duk_uint16_t) 0x2060UL, (duk_uint16_t) 0x2FFFUL, - (duk_uint16_t) 0x3001UL, (duk_uint16_t) 0xFEFEUL, (duk_uint16_t) 0xFF00UL, (duk_uint16_t) 0xFFFFUL, -}; -DUK_INTERNAL const duk_uint16_t duk_unicode_re_ranges_not_wordchar[10] = { - (duk_uint16_t) 0x0000UL, (duk_uint16_t) 0x002FUL, (duk_uint16_t) 0x003AUL, (duk_uint16_t) 0x0040UL, (duk_uint16_t) 0x005BUL, - (duk_uint16_t) 0x005EUL, (duk_uint16_t) 0x0060UL, (duk_uint16_t) 0x0060UL, (duk_uint16_t) 0x007BUL, (duk_uint16_t) 0xFFFFUL, -}; - -#endif /* DUK_USE_REGEXP_SUPPORT */ -#line 1 "duk_util_memrw.c" -/* - * Macro support functions for reading/writing raw data. - * - * These are done using memcpy to ensure they're valid even for unaligned - * reads/writes on platforms where alignment counts. On x86 at least gcc - * is able to compile these into a bswap+mov. "Always inline" is used to - * ensure these macros compile to minimal code. - */ - -/* #include duk_internal.h -> already included */ - -union duk__u16_union { - duk_uint8_t b[2]; - duk_uint16_t x; -}; -typedef union duk__u16_union duk__u16_union; - -union duk__u32_union { - duk_uint8_t b[4]; - duk_uint32_t x; -}; -typedef union duk__u32_union duk__u32_union; - -#if defined(DUK_USE_64BIT_OPS) -union duk__u64_union { - duk_uint8_t b[8]; - duk_uint64_t x; -}; -typedef union duk__u64_union duk__u64_union; -#endif - -DUK_INTERNAL DUK_ALWAYS_INLINE duk_uint16_t duk_raw_read_u16_be(const duk_uint8_t *p) { - duk__u16_union u; - duk_memcpy((void *) u.b, (const void *) p, (size_t) 2); - u.x = DUK_NTOH16(u.x); - return u.x; -} - -DUK_INTERNAL DUK_ALWAYS_INLINE duk_uint32_t duk_raw_read_u32_be(const duk_uint8_t *p) { - duk__u32_union u; - duk_memcpy((void *) u.b, (const void *) p, (size_t) 4); - u.x = DUK_NTOH32(u.x); - return u.x; -} - -DUK_INTERNAL DUK_ALWAYS_INLINE duk_float_t duk_raw_read_float_be(const duk_uint8_t *p) { - duk_float_union fu; - duk_memcpy((void *) fu.uc, (const void *) p, (size_t) 4); - duk_fltunion_big_to_host(&fu); - return fu.f; -} - -DUK_INTERNAL DUK_ALWAYS_INLINE duk_double_t duk_raw_read_double_be(const duk_uint8_t *p) { - duk_double_union du; - duk_memcpy((void *) du.uc, (const void *) p, (size_t) 8); - duk_dblunion_big_to_host(&du); - return du.d; -} - -DUK_INTERNAL DUK_ALWAYS_INLINE duk_uint16_t duk_raw_readinc_u16_be(const duk_uint8_t **p) { - duk_uint16_t res = duk_raw_read_u16_be(*p); - *p += 2; - return res; -} - -DUK_INTERNAL DUK_ALWAYS_INLINE duk_uint32_t duk_raw_readinc_u32_be(const duk_uint8_t **p) { - duk_uint32_t res = duk_raw_read_u32_be(*p); - *p += 4; - return res; -} - -DUK_INTERNAL DUK_ALWAYS_INLINE duk_float_t duk_raw_readinc_float_be(const duk_uint8_t **p) { - duk_float_t res = duk_raw_read_float_be(*p); - *p += 4; - return res; -} - -DUK_INTERNAL DUK_ALWAYS_INLINE duk_double_t duk_raw_readinc_double_be(const duk_uint8_t **p) { - duk_double_t res = duk_raw_read_double_be(*p); - *p += 8; - return res; -} - -DUK_INTERNAL DUK_ALWAYS_INLINE void duk_raw_write_u16_be(duk_uint8_t *p, duk_uint16_t val) { - duk__u16_union u; - u.x = DUK_HTON16(val); - duk_memcpy((void *) p, (const void *) u.b, (size_t) 2); -} - -DUK_INTERNAL DUK_ALWAYS_INLINE void duk_raw_write_u32_be(duk_uint8_t *p, duk_uint32_t val) { - duk__u32_union u; - u.x = DUK_HTON32(val); - duk_memcpy((void *) p, (const void *) u.b, (size_t) 4); -} - -DUK_INTERNAL DUK_ALWAYS_INLINE void duk_raw_write_float_be(duk_uint8_t *p, duk_float_t val) { - duk_float_union fu; - fu.f = val; - duk_fltunion_host_to_big(&fu); - duk_memcpy((void *) p, (const void *) fu.uc, (size_t) 4); -} - -DUK_INTERNAL DUK_ALWAYS_INLINE void duk_raw_write_double_be(duk_uint8_t *p, duk_double_t val) { - duk_double_union du; - du.d = val; - duk_dblunion_host_to_big(&du); - duk_memcpy((void *) p, (const void *) du.uc, (size_t) 8); -} - -DUK_INTERNAL duk_small_int_t duk_raw_write_xutf8(duk_uint8_t *p, duk_ucodepoint_t val) { - duk_small_int_t len = duk_unicode_encode_xutf8(val, p); - return len; -} - -DUK_INTERNAL duk_small_int_t duk_raw_write_cesu8(duk_uint8_t *p, duk_ucodepoint_t val) { - duk_small_int_t len = duk_unicode_encode_cesu8(val, p); - return len; -} - -DUK_INTERNAL DUK_ALWAYS_INLINE void duk_raw_writeinc_u16_be(duk_uint8_t **p, duk_uint16_t val) { - duk_raw_write_u16_be(*p, val); - *p += 2; -} - -DUK_INTERNAL DUK_ALWAYS_INLINE void duk_raw_writeinc_u32_be(duk_uint8_t **p, duk_uint32_t val) { - duk_raw_write_u32_be(*p, val); - *p += 4; -} - -DUK_INTERNAL DUK_ALWAYS_INLINE void duk_raw_writeinc_float_be(duk_uint8_t **p, duk_float_t val) { - duk_raw_write_float_be(*p, val); - *p += 4; -} - -DUK_INTERNAL DUK_ALWAYS_INLINE void duk_raw_writeinc_double_be(duk_uint8_t **p, duk_double_t val) { - duk_raw_write_double_be(*p, val); - *p += 8; -} - -DUK_INTERNAL void duk_raw_writeinc_xutf8(duk_uint8_t **p, duk_ucodepoint_t val) { - duk_small_int_t len = duk_unicode_encode_xutf8(val, *p); - *p += len; -} - -DUK_INTERNAL void duk_raw_writeinc_cesu8(duk_uint8_t **p, duk_ucodepoint_t val) { - duk_small_int_t len = duk_unicode_encode_cesu8(val, *p); - *p += len; -} -#line 1 "duk_util_misc.c" -/* - * Misc util stuff. - */ - -/* #include duk_internal.h -> already included */ - -/* - * Lowercase digits for radix values 2 to 36. Also doubles as lowercase - * hex nybble table. - */ - -DUK_INTERNAL const duk_uint8_t duk_lc_digits[36] = { - DUK_ASC_0, DUK_ASC_1, DUK_ASC_2, DUK_ASC_3, DUK_ASC_4, DUK_ASC_5, DUK_ASC_6, DUK_ASC_7, - DUK_ASC_8, DUK_ASC_9, DUK_ASC_LC_A, DUK_ASC_LC_B, DUK_ASC_LC_C, DUK_ASC_LC_D, DUK_ASC_LC_E, DUK_ASC_LC_F, - DUK_ASC_LC_G, DUK_ASC_LC_H, DUK_ASC_LC_I, DUK_ASC_LC_J, DUK_ASC_LC_K, DUK_ASC_LC_L, DUK_ASC_LC_M, DUK_ASC_LC_N, - DUK_ASC_LC_O, DUK_ASC_LC_P, DUK_ASC_LC_Q, DUK_ASC_LC_R, DUK_ASC_LC_S, DUK_ASC_LC_T, DUK_ASC_LC_U, DUK_ASC_LC_V, - DUK_ASC_LC_W, DUK_ASC_LC_X, DUK_ASC_LC_Y, DUK_ASC_LC_Z -}; - -DUK_INTERNAL const duk_uint8_t duk_uc_nybbles[16] = { DUK_ASC_0, DUK_ASC_1, DUK_ASC_2, DUK_ASC_3, - DUK_ASC_4, DUK_ASC_5, DUK_ASC_6, DUK_ASC_7, - DUK_ASC_8, DUK_ASC_9, DUK_ASC_UC_A, DUK_ASC_UC_B, - DUK_ASC_UC_C, DUK_ASC_UC_D, DUK_ASC_UC_E, DUK_ASC_UC_F }; - -/* - * Table for hex decoding ASCII hex digits - */ - -DUK_INTERNAL const duk_int8_t duk_hex_dectab[256] = { - /* -1 if invalid */ - -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0x00-0x0f */ - -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0x10-0x1f */ - -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0x20-0x2f */ - 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, -1, -1, -1, -1, -1, -1, /* 0x30-0x3f */ - -1, 10, 11, 12, 13, 14, 15, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0x40-0x4f */ - -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0x50-0x5f */ - -1, 10, 11, 12, 13, 14, 15, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0x60-0x6f */ - -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0x70-0x7f */ - -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0x80-0x8f */ - -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0x90-0x9f */ - -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0xa0-0xaf */ - -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0xb0-0xbf */ - -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0xc0-0xcf */ - -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0xd0-0xdf */ - -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0xe0-0xef */ - -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 /* 0xf0-0xff */ -}; - -#if defined(DUK_USE_HEX_FASTPATH) -/* Preshifted << 4. Must use 16-bit entry to allow negative value signaling. */ -DUK_INTERNAL const duk_int16_t duk_hex_dectab_shift4[256] = { - -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0x00-0x0f */ - -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0x10-0x1f */ - -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0x20-0x2f */ - 0x00, 0x10, 0x20, 0x30, 0x40, 0x50, 0x60, 0x70, 0x80, 0x90, -1, -1, -1, -1, -1, -1, /* 0x30-0x3f */ - -1, 0xa0, 0xb0, 0xc0, 0xd0, 0xe0, 0xf0, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0x40-0x4f */ - -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0x50-0x5f */ - -1, 0xa0, 0xb0, 0xc0, 0xd0, 0xe0, 0xf0, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0x60-0x6f */ - -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0x70-0x7f */ - -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0x80-0x8f */ - -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0x90-0x9f */ - -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0xa0-0xaf */ - -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0xb0-0xbf */ - -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0xc0-0xcf */ - -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0xd0-0xdf */ - -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0xe0-0xef */ - -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 /* 0xf0-0xff */ -}; -#endif - -/* - * Table for hex encoding bytes - */ - -#if defined(DUK_USE_HEX_FASTPATH) -/* Lookup to encode one byte directly into 2 characters: - * - * def genhextab(bswap): - * for i in xrange(256): - * t = chr(i).encode('hex') - * if bswap: - * t = t[1] + t[0] - * print('0x' + t.encode('hex') + 'U') - * print('big endian'); genhextab(False) - * print('little endian'); genhextab(True) - */ -DUK_INTERNAL const duk_uint16_t duk_hex_enctab[256] = { -#if defined(DUK_USE_INTEGER_BE) - 0x3030U, 0x3031U, 0x3032U, 0x3033U, 0x3034U, 0x3035U, 0x3036U, 0x3037U, 0x3038U, 0x3039U, 0x3061U, 0x3062U, 0x3063U, - 0x3064U, 0x3065U, 0x3066U, 0x3130U, 0x3131U, 0x3132U, 0x3133U, 0x3134U, 0x3135U, 0x3136U, 0x3137U, 0x3138U, 0x3139U, - 0x3161U, 0x3162U, 0x3163U, 0x3164U, 0x3165U, 0x3166U, 0x3230U, 0x3231U, 0x3232U, 0x3233U, 0x3234U, 0x3235U, 0x3236U, - 0x3237U, 0x3238U, 0x3239U, 0x3261U, 0x3262U, 0x3263U, 0x3264U, 0x3265U, 0x3266U, 0x3330U, 0x3331U, 0x3332U, 0x3333U, - 0x3334U, 0x3335U, 0x3336U, 0x3337U, 0x3338U, 0x3339U, 0x3361U, 0x3362U, 0x3363U, 0x3364U, 0x3365U, 0x3366U, 0x3430U, - 0x3431U, 0x3432U, 0x3433U, 0x3434U, 0x3435U, 0x3436U, 0x3437U, 0x3438U, 0x3439U, 0x3461U, 0x3462U, 0x3463U, 0x3464U, - 0x3465U, 0x3466U, 0x3530U, 0x3531U, 0x3532U, 0x3533U, 0x3534U, 0x3535U, 0x3536U, 0x3537U, 0x3538U, 0x3539U, 0x3561U, - 0x3562U, 0x3563U, 0x3564U, 0x3565U, 0x3566U, 0x3630U, 0x3631U, 0x3632U, 0x3633U, 0x3634U, 0x3635U, 0x3636U, 0x3637U, - 0x3638U, 0x3639U, 0x3661U, 0x3662U, 0x3663U, 0x3664U, 0x3665U, 0x3666U, 0x3730U, 0x3731U, 0x3732U, 0x3733U, 0x3734U, - 0x3735U, 0x3736U, 0x3737U, 0x3738U, 0x3739U, 0x3761U, 0x3762U, 0x3763U, 0x3764U, 0x3765U, 0x3766U, 0x3830U, 0x3831U, - 0x3832U, 0x3833U, 0x3834U, 0x3835U, 0x3836U, 0x3837U, 0x3838U, 0x3839U, 0x3861U, 0x3862U, 0x3863U, 0x3864U, 0x3865U, - 0x3866U, 0x3930U, 0x3931U, 0x3932U, 0x3933U, 0x3934U, 0x3935U, 0x3936U, 0x3937U, 0x3938U, 0x3939U, 0x3961U, 0x3962U, - 0x3963U, 0x3964U, 0x3965U, 0x3966U, 0x6130U, 0x6131U, 0x6132U, 0x6133U, 0x6134U, 0x6135U, 0x6136U, 0x6137U, 0x6138U, - 0x6139U, 0x6161U, 0x6162U, 0x6163U, 0x6164U, 0x6165U, 0x6166U, 0x6230U, 0x6231U, 0x6232U, 0x6233U, 0x6234U, 0x6235U, - 0x6236U, 0x6237U, 0x6238U, 0x6239U, 0x6261U, 0x6262U, 0x6263U, 0x6264U, 0x6265U, 0x6266U, 0x6330U, 0x6331U, 0x6332U, - 0x6333U, 0x6334U, 0x6335U, 0x6336U, 0x6337U, 0x6338U, 0x6339U, 0x6361U, 0x6362U, 0x6363U, 0x6364U, 0x6365U, 0x6366U, - 0x6430U, 0x6431U, 0x6432U, 0x6433U, 0x6434U, 0x6435U, 0x6436U, 0x6437U, 0x6438U, 0x6439U, 0x6461U, 0x6462U, 0x6463U, - 0x6464U, 0x6465U, 0x6466U, 0x6530U, 0x6531U, 0x6532U, 0x6533U, 0x6534U, 0x6535U, 0x6536U, 0x6537U, 0x6538U, 0x6539U, - 0x6561U, 0x6562U, 0x6563U, 0x6564U, 0x6565U, 0x6566U, 0x6630U, 0x6631U, 0x6632U, 0x6633U, 0x6634U, 0x6635U, 0x6636U, - 0x6637U, 0x6638U, 0x6639U, 0x6661U, 0x6662U, 0x6663U, 0x6664U, 0x6665U, 0x6666U -#else /* DUK_USE_INTEGER_BE */ - 0x3030U, 0x3130U, 0x3230U, 0x3330U, 0x3430U, 0x3530U, 0x3630U, 0x3730U, 0x3830U, 0x3930U, 0x6130U, 0x6230U, 0x6330U, - 0x6430U, 0x6530U, 0x6630U, 0x3031U, 0x3131U, 0x3231U, 0x3331U, 0x3431U, 0x3531U, 0x3631U, 0x3731U, 0x3831U, 0x3931U, - 0x6131U, 0x6231U, 0x6331U, 0x6431U, 0x6531U, 0x6631U, 0x3032U, 0x3132U, 0x3232U, 0x3332U, 0x3432U, 0x3532U, 0x3632U, - 0x3732U, 0x3832U, 0x3932U, 0x6132U, 0x6232U, 0x6332U, 0x6432U, 0x6532U, 0x6632U, 0x3033U, 0x3133U, 0x3233U, 0x3333U, - 0x3433U, 0x3533U, 0x3633U, 0x3733U, 0x3833U, 0x3933U, 0x6133U, 0x6233U, 0x6333U, 0x6433U, 0x6533U, 0x6633U, 0x3034U, - 0x3134U, 0x3234U, 0x3334U, 0x3434U, 0x3534U, 0x3634U, 0x3734U, 0x3834U, 0x3934U, 0x6134U, 0x6234U, 0x6334U, 0x6434U, - 0x6534U, 0x6634U, 0x3035U, 0x3135U, 0x3235U, 0x3335U, 0x3435U, 0x3535U, 0x3635U, 0x3735U, 0x3835U, 0x3935U, 0x6135U, - 0x6235U, 0x6335U, 0x6435U, 0x6535U, 0x6635U, 0x3036U, 0x3136U, 0x3236U, 0x3336U, 0x3436U, 0x3536U, 0x3636U, 0x3736U, - 0x3836U, 0x3936U, 0x6136U, 0x6236U, 0x6336U, 0x6436U, 0x6536U, 0x6636U, 0x3037U, 0x3137U, 0x3237U, 0x3337U, 0x3437U, - 0x3537U, 0x3637U, 0x3737U, 0x3837U, 0x3937U, 0x6137U, 0x6237U, 0x6337U, 0x6437U, 0x6537U, 0x6637U, 0x3038U, 0x3138U, - 0x3238U, 0x3338U, 0x3438U, 0x3538U, 0x3638U, 0x3738U, 0x3838U, 0x3938U, 0x6138U, 0x6238U, 0x6338U, 0x6438U, 0x6538U, - 0x6638U, 0x3039U, 0x3139U, 0x3239U, 0x3339U, 0x3439U, 0x3539U, 0x3639U, 0x3739U, 0x3839U, 0x3939U, 0x6139U, 0x6239U, - 0x6339U, 0x6439U, 0x6539U, 0x6639U, 0x3061U, 0x3161U, 0x3261U, 0x3361U, 0x3461U, 0x3561U, 0x3661U, 0x3761U, 0x3861U, - 0x3961U, 0x6161U, 0x6261U, 0x6361U, 0x6461U, 0x6561U, 0x6661U, 0x3062U, 0x3162U, 0x3262U, 0x3362U, 0x3462U, 0x3562U, - 0x3662U, 0x3762U, 0x3862U, 0x3962U, 0x6162U, 0x6262U, 0x6362U, 0x6462U, 0x6562U, 0x6662U, 0x3063U, 0x3163U, 0x3263U, - 0x3363U, 0x3463U, 0x3563U, 0x3663U, 0x3763U, 0x3863U, 0x3963U, 0x6163U, 0x6263U, 0x6363U, 0x6463U, 0x6563U, 0x6663U, - 0x3064U, 0x3164U, 0x3264U, 0x3364U, 0x3464U, 0x3564U, 0x3664U, 0x3764U, 0x3864U, 0x3964U, 0x6164U, 0x6264U, 0x6364U, - 0x6464U, 0x6564U, 0x6664U, 0x3065U, 0x3165U, 0x3265U, 0x3365U, 0x3465U, 0x3565U, 0x3665U, 0x3765U, 0x3865U, 0x3965U, - 0x6165U, 0x6265U, 0x6365U, 0x6465U, 0x6565U, 0x6665U, 0x3066U, 0x3166U, 0x3266U, 0x3366U, 0x3466U, 0x3566U, 0x3666U, - 0x3766U, 0x3866U, 0x3966U, 0x6166U, 0x6266U, 0x6366U, 0x6466U, 0x6566U, 0x6666U -#endif /* DUK_USE_INTEGER_BE */ -}; -#endif /* DUK_USE_HEX_FASTPATH */ - -/* - * Arbitrary byteswap for potentially unaligned values - * - * Used to byteswap pointers e.g. in debugger code. - */ - -#if defined(DUK_USE_DEBUGGER_SUPPORT) /* For now only needed by the debugger. */ -DUK_INTERNAL void duk_byteswap_bytes(duk_uint8_t *p, duk_small_uint_t len) { - duk_uint8_t tmp; - duk_uint8_t *q = p + len - 1; - - while (p - q < 0) { - tmp = *p; - *p = *q; - *q = tmp; - p++; - q--; - } -} -#endif - -/* - * Random - */ - -DUK_INTERNAL duk_double_t duk_util_get_random_double(duk_hthread *thr) { -#if defined(DUK_USE_GET_RANDOM_DOUBLE) - return DUK_USE_GET_RANDOM_DOUBLE(thr->heap->heap_udata); -#else - return duk_util_tinyrandom_get_double(thr); -#endif -} -#line 1 "duk_hobject_class.c" -/* - * Hobject ECMAScript [[Class]]. - */ - -/* #include duk_internal.h -> already included */ - -#if (DUK_STRIDX_UC_ARGUMENTS > 255) -#error constant too large -#endif -#if (DUK_STRIDX_UC_ARRAY > 255) -#error constant too large -#endif -#if (DUK_STRIDX_UC_BOOLEAN > 255) -#error constant too large -#endif -#if (DUK_STRIDX_UC_DATE > 255) -#error constant too large -#endif -#if (DUK_STRIDX_UC_ERROR > 255) -#error constant too large -#endif -#if (DUK_STRIDX_UC_FUNCTION > 255) -#error constant too large -#endif -#if (DUK_STRIDX_JSON > 255) -#error constant too large -#endif -#if (DUK_STRIDX_MATH > 255) -#error constant too large -#endif -#if (DUK_STRIDX_UC_NUMBER > 255) -#error constant too large -#endif -#if (DUK_STRIDX_UC_OBJECT > 255) -#error constant too large -#endif -#if (DUK_STRIDX_REG_EXP > 255) -#error constant too large -#endif -#if (DUK_STRIDX_UC_STRING > 255) -#error constant too large -#endif -#if (DUK_STRIDX_GLOBAL > 255) -#error constant too large -#endif -#if (DUK_STRIDX_OBJ_ENV > 255) -#error constant too large -#endif -#if (DUK_STRIDX_DEC_ENV > 255) -#error constant too large -#endif -#if (DUK_STRIDX_UC_POINTER > 255) -#error constant too large -#endif -#if (DUK_STRIDX_UC_THREAD > 255) -#error constant too large -#endif -#if (DUK_STRIDX_ARRAY_BUFFER > 255) -#error constant too large -#endif -#if (DUK_STRIDX_DATA_VIEW > 255) -#error constant too large -#endif -#if (DUK_STRIDX_INT8_ARRAY > 255) -#error constant too large -#endif -#if (DUK_STRIDX_UINT8_ARRAY > 255) -#error constant too large -#endif -#if (DUK_STRIDX_UINT8_CLAMPED_ARRAY > 255) -#error constant too large -#endif -#if (DUK_STRIDX_INT16_ARRAY > 255) -#error constant too large -#endif -#if (DUK_STRIDX_UINT16_ARRAY > 255) -#error constant too large -#endif -#if (DUK_STRIDX_INT32_ARRAY > 255) -#error constant too large -#endif -#if (DUK_STRIDX_UINT32_ARRAY > 255) -#error constant too large -#endif -#if (DUK_STRIDX_FLOAT32_ARRAY > 255) -#error constant too large -#endif -#if (DUK_STRIDX_FLOAT64_ARRAY > 255) -#error constant too large -#endif -#if (DUK_STRIDX_EMPTY_STRING > 255) -#error constant too large -#endif - -/* Note: assumes that these string indexes are 8-bit, genstrings.py must ensure that */ -DUK_INTERNAL duk_uint8_t duk_class_number_to_stridx[32] = { - DUK_STRIDX_EMPTY_STRING, /* NONE, intentionally empty */ - DUK_STRIDX_UC_OBJECT, - DUK_STRIDX_UC_ARRAY, - DUK_STRIDX_UC_FUNCTION, - DUK_STRIDX_UC_ARGUMENTS, - DUK_STRIDX_UC_BOOLEAN, - DUK_STRIDX_UC_DATE, - DUK_STRIDX_UC_ERROR, - DUK_STRIDX_JSON, - DUK_STRIDX_MATH, - DUK_STRIDX_UC_NUMBER, - DUK_STRIDX_REG_EXP, - DUK_STRIDX_UC_STRING, - DUK_STRIDX_GLOBAL, - DUK_STRIDX_UC_SYMBOL, - DUK_STRIDX_OBJ_ENV, - DUK_STRIDX_DEC_ENV, - DUK_STRIDX_UC_POINTER, - DUK_STRIDX_UC_THREAD, - DUK_STRIDX_ARRAY_BUFFER, - DUK_STRIDX_DATA_VIEW, - DUK_STRIDX_INT8_ARRAY, - DUK_STRIDX_UINT8_ARRAY, - DUK_STRIDX_UINT8_CLAMPED_ARRAY, - DUK_STRIDX_INT16_ARRAY, - DUK_STRIDX_UINT16_ARRAY, - DUK_STRIDX_INT32_ARRAY, - DUK_STRIDX_UINT32_ARRAY, - DUK_STRIDX_FLOAT32_ARRAY, - DUK_STRIDX_FLOAT64_ARRAY, - DUK_STRIDX_EMPTY_STRING, /* UNUSED, intentionally empty */ - DUK_STRIDX_EMPTY_STRING, /* UNUSED, intentionally empty */ -}; -#line 1 "duk_alloc_default.c" -/* - * Default allocation functions. - * - * Assumes behavior such as malloc allowing zero size, yielding - * a NULL or a unique pointer which is a no-op for free. - */ - -/* #include duk_internal.h -> already included */ - -#if defined(DUK_USE_PROVIDE_DEFAULT_ALLOC_FUNCTIONS) -DUK_INTERNAL void *duk_default_alloc_function(void *udata, duk_size_t size) { - void *res; - DUK_UNREF(udata); - res = DUK_ANSI_MALLOC(size); - DUK_DDD(DUK_DDDPRINT("default alloc function: %lu -> %p", (unsigned long) size, (void *) res)); - return res; -} - -DUK_INTERNAL void *duk_default_realloc_function(void *udata, void *ptr, duk_size_t newsize) { - void *res; - DUK_UNREF(udata); - res = DUK_ANSI_REALLOC(ptr, newsize); - DUK_DDD(DUK_DDDPRINT("default realloc function: %p %lu -> %p", (void *) ptr, (unsigned long) newsize, (void *) res)); - return res; -} - -DUK_INTERNAL void duk_default_free_function(void *udata, void *ptr) { - DUK_DDD(DUK_DDDPRINT("default free function: %p", (void *) ptr)); - DUK_UNREF(udata); - DUK_ANSI_FREE(ptr); -} -#endif /* DUK_USE_PROVIDE_DEFAULT_ALLOC_FUNCTIONS */ -#line 1 "duk_api_buffer.c" -/* - * Buffer - */ - -/* #include duk_internal.h -> already included */ - -DUK_EXTERNAL void *duk_resize_buffer(duk_hthread *thr, duk_idx_t idx, duk_size_t new_size) { - duk_hbuffer_dynamic *h; - - DUK_ASSERT_API_ENTRY(thr); - - h = (duk_hbuffer_dynamic *) duk_require_hbuffer(thr, idx); - DUK_ASSERT(h != NULL); - - if (!(DUK_HBUFFER_HAS_DYNAMIC(h) && !DUK_HBUFFER_HAS_EXTERNAL(h))) { - DUK_ERROR_TYPE(thr, DUK_STR_WRONG_BUFFER_TYPE); - DUK_WO_NORETURN(return NULL;); - } - - /* Maximum size check is handled by callee. */ - duk_hbuffer_resize(thr, h, new_size); - - return DUK_HBUFFER_DYNAMIC_GET_DATA_PTR(thr->heap, h); -} - -DUK_EXTERNAL void *duk_steal_buffer(duk_hthread *thr, duk_idx_t idx, duk_size_t *out_size) { - duk_hbuffer_dynamic *h; - void *ptr; - duk_size_t sz; - - DUK_ASSERT_API_ENTRY(thr); - - h = (duk_hbuffer_dynamic *) duk_require_hbuffer(thr, idx); - DUK_ASSERT(h != NULL); - - if (!(DUK_HBUFFER_HAS_DYNAMIC(h) && !DUK_HBUFFER_HAS_EXTERNAL(h))) { - DUK_ERROR_TYPE(thr, DUK_STR_WRONG_BUFFER_TYPE); - DUK_WO_NORETURN(return NULL;); - } - - /* Forget the previous allocation, setting size to 0 and alloc to - * NULL. Caller is responsible for freeing the previous allocation. - * Getting the allocation and clearing it is done in the same API - * call to avoid any chance of a realloc. - */ - ptr = DUK_HBUFFER_DYNAMIC_GET_DATA_PTR(thr->heap, h); - sz = DUK_HBUFFER_DYNAMIC_GET_SIZE(h); - if (out_size) { - *out_size = sz; - } - DUK_HBUFFER_DYNAMIC_SET_DATA_PTR_NULL(thr->heap, h); - DUK_HBUFFER_DYNAMIC_SET_SIZE(h, 0); - - return ptr; -} - -DUK_EXTERNAL void duk_config_buffer(duk_hthread *thr, duk_idx_t idx, void *ptr, duk_size_t len) { - duk_hbuffer_external *h; - - DUK_ASSERT_API_ENTRY(thr); - - h = (duk_hbuffer_external *) duk_require_hbuffer(thr, idx); - DUK_ASSERT(h != NULL); - - if (!DUK_HBUFFER_HAS_EXTERNAL(h)) { - DUK_ERROR_TYPE(thr, DUK_STR_WRONG_BUFFER_TYPE); - DUK_WO_NORETURN(return;); - } - DUK_ASSERT(DUK_HBUFFER_HAS_DYNAMIC(h)); - - DUK_HBUFFER_EXTERNAL_SET_DATA_PTR(thr->heap, h, ptr); - DUK_HBUFFER_EXTERNAL_SET_SIZE(h, len); -} -#line 1 "duk_api_bytecode.c" -/* - * Bytecode dump/load - * - * The bytecode load primitive is more important performance-wise than the - * dump primitive. - * - * Unlike most Duktape API calls, bytecode dump/load is not guaranteed to be - * memory safe for invalid arguments - caller beware! There's little point - * in trying to achieve memory safety unless bytecode instructions are also - * validated which is not easy to do with indirect register references etc. - */ - -/* #include duk_internal.h -> already included */ - -#if defined(DUK_USE_BYTECODE_DUMP_SUPPORT) - -#define DUK__SER_MARKER 0xbf -#define DUK__SER_STRING 0x00 -#define DUK__SER_NUMBER 0x01 -#define DUK__BYTECODE_INITIAL_ALLOC 256 -#define DUK__NO_FORMALS 0xffffffffUL - -/* - * Dump/load helpers, xxx_raw() helpers do no buffer checks - */ - -DUK_LOCAL const duk_uint8_t *duk__load_string_raw(duk_hthread *thr, const duk_uint8_t *p) { - duk_uint32_t len; - - len = DUK_RAW_READINC_U32_BE(p); - duk_push_lstring(thr, (const char *) p, len); - p += len; - return p; -} - -DUK_LOCAL const duk_uint8_t *duk__load_buffer_raw(duk_hthread *thr, const duk_uint8_t *p) { - duk_uint32_t len; - duk_uint8_t *buf; - - len = DUK_RAW_READINC_U32_BE(p); - buf = (duk_uint8_t *) duk_push_fixed_buffer_nozero(thr, (duk_size_t) len); - DUK_ASSERT(buf != NULL); - duk_memcpy((void *) buf, (const void *) p, (size_t) len); - p += len; - return p; -} - -DUK_LOCAL duk_uint8_t *duk__dump_hstring_raw(duk_uint8_t *p, duk_hstring *h) { - duk_size_t len; - duk_uint32_t tmp32; - - DUK_ASSERT(h != NULL); - - len = DUK_HSTRING_GET_BYTELEN(h); - DUK_ASSERT(len <= 0xffffffffUL); /* string limits */ - tmp32 = (duk_uint32_t) len; - DUK_RAW_WRITEINC_U32_BE(p, tmp32); - duk_memcpy((void *) p, (const void *) DUK_HSTRING_GET_DATA(h), len); - p += len; - return p; -} - -DUK_LOCAL duk_uint8_t *duk__dump_hbuffer_raw(duk_hthread *thr, duk_uint8_t *p, duk_hbuffer *h) { - duk_size_t len; - duk_uint32_t tmp32; - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(h != NULL); - DUK_UNREF(thr); - - len = DUK_HBUFFER_GET_SIZE(h); - DUK_ASSERT(len <= 0xffffffffUL); /* buffer limits */ - tmp32 = (duk_uint32_t) len; - DUK_RAW_WRITEINC_U32_BE(p, tmp32); - /* When len == 0, buffer data pointer may be NULL. */ - duk_memcpy_unsafe((void *) p, (const void *) DUK_HBUFFER_GET_DATA_PTR(thr->heap, h), len); - p += len; - return p; -} - -DUK_LOCAL duk_uint8_t *duk__dump_string_prop(duk_hthread *thr, - duk_uint8_t *p, - duk_bufwriter_ctx *bw_ctx, - duk_hobject *func, - duk_small_uint_t stridx) { - duk_hstring *h_str; - duk_tval *tv; - - tv = duk_hobject_find_entry_tval_ptr_stridx(thr->heap, (duk_hobject *) func, stridx); - if (tv != NULL && DUK_TVAL_IS_STRING(tv)) { - h_str = DUK_TVAL_GET_STRING(tv); - DUK_ASSERT(h_str != NULL); - } else { - h_str = DUK_HTHREAD_STRING_EMPTY_STRING(thr); - DUK_ASSERT(h_str != NULL); - } - DUK_ASSERT(DUK_HSTRING_MAX_BYTELEN <= 0x7fffffffUL); /* ensures no overflow */ - p = DUK_BW_ENSURE_RAW(thr, bw_ctx, 4U + DUK_HSTRING_GET_BYTELEN(h_str), p); - p = duk__dump_hstring_raw(p, h_str); - return p; -} - -DUK_LOCAL duk_uint8_t *duk__dump_buffer_prop(duk_hthread *thr, - duk_uint8_t *p, - duk_bufwriter_ctx *bw_ctx, - duk_hobject *func, - duk_small_uint_t stridx) { - duk_tval *tv; - - tv = duk_hobject_find_entry_tval_ptr_stridx(thr->heap, (duk_hobject *) func, stridx); - if (tv != NULL && DUK_TVAL_IS_BUFFER(tv)) { - duk_hbuffer *h_buf; - h_buf = DUK_TVAL_GET_BUFFER(tv); - DUK_ASSERT(h_buf != NULL); - DUK_ASSERT(DUK_HBUFFER_MAX_BYTELEN <= 0x7fffffffUL); /* ensures no overflow */ - p = DUK_BW_ENSURE_RAW(thr, bw_ctx, 4U + DUK_HBUFFER_GET_SIZE(h_buf), p); - p = duk__dump_hbuffer_raw(thr, p, h_buf); - } else { - p = DUK_BW_ENSURE_RAW(thr, bw_ctx, 4U, p); - DUK_RAW_WRITEINC_U32_BE(p, 0); - } - return p; -} - -DUK_LOCAL duk_uint8_t *duk__dump_uint32_prop(duk_hthread *thr, - duk_uint8_t *p, - duk_bufwriter_ctx *bw_ctx, - duk_hobject *func, - duk_small_uint_t stridx, - duk_uint32_t def_value) { - duk_tval *tv; - duk_uint32_t val; - - tv = duk_hobject_find_entry_tval_ptr_stridx(thr->heap, (duk_hobject *) func, stridx); - if (tv != NULL && DUK_TVAL_IS_NUMBER(tv)) { - val = (duk_uint32_t) DUK_TVAL_GET_NUMBER(tv); - } else { - val = def_value; - } - p = DUK_BW_ENSURE_RAW(thr, bw_ctx, 4U, p); - DUK_RAW_WRITEINC_U32_BE(p, val); - return p; -} - -DUK_LOCAL duk_uint8_t *duk__dump_varmap(duk_hthread *thr, duk_uint8_t *p, duk_bufwriter_ctx *bw_ctx, duk_hobject *func) { - duk_hobject *h; - - h = duk_hobject_get_varmap(thr, (duk_hobject *) func); - if (h != NULL) { - duk_uint_fast32_t i; - - /* We know _Varmap only has own properties so walk property - * table directly. We also know _Varmap is dense and all - * values are numbers; assert for these. GC and finalizers - * shouldn't affect _Varmap so side effects should be fine. - */ - for (i = 0; i < (duk_uint_fast32_t) DUK_HOBJECT_GET_ENEXT(h); i++) { - duk_hstring *key; - duk_tval *tv_val; - duk_uint32_t val; - - key = DUK_HOBJECT_E_GET_KEY(thr->heap, h, i); - DUK_ASSERT(key != NULL); /* _Varmap is dense */ - DUK_ASSERT(!DUK_HOBJECT_E_SLOT_IS_ACCESSOR(thr->heap, h, i)); - tv_val = DUK_HOBJECT_E_GET_VALUE_TVAL_PTR(thr->heap, h, i); - DUK_ASSERT(tv_val != NULL); - DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv_val)); /* known to be number; in fact an integer */ -#if defined(DUK_USE_FASTINT) - DUK_ASSERT(DUK_TVAL_IS_FASTINT(tv_val)); - DUK_ASSERT(DUK_TVAL_GET_FASTINT(tv_val) == - (duk_int64_t) DUK_TVAL_GET_FASTINT_U32(tv_val)); /* known to be 32-bit */ - val = DUK_TVAL_GET_FASTINT_U32(tv_val); -#else - val = (duk_uint32_t) DUK_TVAL_GET_NUMBER(tv_val); -#endif - - DUK_ASSERT(DUK_HSTRING_MAX_BYTELEN <= 0x7fffffffUL); /* ensures no overflow */ - p = DUK_BW_ENSURE_RAW(thr, bw_ctx, 4U + DUK_HSTRING_GET_BYTELEN(key) + 4U, p); - p = duk__dump_hstring_raw(p, key); - DUK_RAW_WRITEINC_U32_BE(p, val); - } - } - p = DUK_BW_ENSURE_RAW(thr, bw_ctx, 4U, p); - DUK_RAW_WRITEINC_U32_BE(p, 0); /* end of _Varmap */ - return p; -} - -DUK_LOCAL duk_uint8_t *duk__dump_formals(duk_hthread *thr, duk_uint8_t *p, duk_bufwriter_ctx *bw_ctx, duk_hobject *func) { - duk_harray *h; - - h = duk_hobject_get_formals(thr, (duk_hobject *) func); - if (h != NULL) { - duk_uint32_t i; - - /* Here we rely on _Formals being a dense array containing - * strings. This should be the case unless _Formals has been - * tweaked by the application (which we don't support right - * now). - */ - - p = DUK_BW_ENSURE_RAW(thr, bw_ctx, 4U, p); - DUK_ASSERT(h->length != DUK__NO_FORMALS); /* limits */ - DUK_RAW_WRITEINC_U32_BE(p, h->length); - - for (i = 0; i < h->length; i++) { - duk_tval *tv_val; - duk_hstring *varname; - - tv_val = DUK_HOBJECT_A_GET_VALUE_PTR(thr->heap, (duk_hobject *) h, i); - DUK_ASSERT(tv_val != NULL); - DUK_ASSERT(DUK_TVAL_IS_STRING(tv_val)); - - varname = DUK_TVAL_GET_STRING(tv_val); - DUK_ASSERT(varname != NULL); - DUK_ASSERT(DUK_HSTRING_GET_BYTELEN(varname) >= 1); - - DUK_ASSERT(DUK_HSTRING_MAX_BYTELEN <= 0x7fffffffUL); /* ensures no overflow */ - p = DUK_BW_ENSURE_RAW(thr, bw_ctx, 4U + DUK_HSTRING_GET_BYTELEN(varname), p); - p = duk__dump_hstring_raw(p, varname); - } - } else { - DUK_DD(DUK_DDPRINT("dumping function without _Formals, emit marker to indicate missing _Formals")); - p = DUK_BW_ENSURE_RAW(thr, bw_ctx, 4U, p); - DUK_RAW_WRITEINC_U32_BE(p, DUK__NO_FORMALS); /* marker: no formals */ - } - return p; -} - -static duk_uint8_t *duk__dump_func(duk_hthread *thr, duk_hcompfunc *func, duk_bufwriter_ctx *bw_ctx, duk_uint8_t *p) { - duk_tval *tv, *tv_end; - duk_instr_t *ins, *ins_end; - duk_hobject **fn, **fn_end; - duk_hstring *h_str; - duk_uint32_t count_instr; - duk_uint32_t tmp32; - duk_uint16_t tmp16; - duk_double_t d; - - DUK_DD(DUK_DDPRINT("dumping function %p to %p: " - "consts=[%p,%p[ (%ld bytes, %ld items), " - "funcs=[%p,%p[ (%ld bytes, %ld items), " - "code=[%p,%p[ (%ld bytes, %ld items)", - (void *) func, - (void *) p, - (void *) DUK_HCOMPFUNC_GET_CONSTS_BASE(thr->heap, func), - (void *) DUK_HCOMPFUNC_GET_CONSTS_END(thr->heap, func), - (long) DUK_HCOMPFUNC_GET_CONSTS_SIZE(thr->heap, func), - (long) DUK_HCOMPFUNC_GET_CONSTS_COUNT(thr->heap, func), - (void *) DUK_HCOMPFUNC_GET_FUNCS_BASE(thr->heap, func), - (void *) DUK_HCOMPFUNC_GET_FUNCS_END(thr->heap, func), - (long) DUK_HCOMPFUNC_GET_FUNCS_SIZE(thr->heap, func), - (long) DUK_HCOMPFUNC_GET_FUNCS_COUNT(thr->heap, func), - (void *) DUK_HCOMPFUNC_GET_CODE_BASE(thr->heap, func), - (void *) DUK_HCOMPFUNC_GET_CODE_END(thr->heap, func), - (long) DUK_HCOMPFUNC_GET_CODE_SIZE(thr->heap, func), - (long) DUK_HCOMPFUNC_GET_CODE_COUNT(thr->heap, func))); - - DUK_ASSERT(DUK_USE_ESBC_MAX_BYTES <= 0x7fffffffUL); /* ensures no overflow */ - count_instr = (duk_uint32_t) DUK_HCOMPFUNC_GET_CODE_COUNT(thr->heap, func); - p = DUK_BW_ENSURE_RAW(thr, bw_ctx, 3U * 4U + 2U * 2U + 3U * 4U + count_instr * 4U, p); - - /* Fixed header info. */ - tmp32 = count_instr; - DUK_RAW_WRITEINC_U32_BE(p, tmp32); - tmp32 = (duk_uint32_t) DUK_HCOMPFUNC_GET_CONSTS_COUNT(thr->heap, func); - DUK_RAW_WRITEINC_U32_BE(p, tmp32); - tmp32 = (duk_uint32_t) DUK_HCOMPFUNC_GET_FUNCS_COUNT(thr->heap, func); - DUK_RAW_WRITEINC_U32_BE(p, tmp32); - tmp16 = func->nregs; - DUK_RAW_WRITEINC_U16_BE(p, tmp16); - tmp16 = func->nargs; - DUK_RAW_WRITEINC_U16_BE(p, tmp16); -#if defined(DUK_USE_DEBUGGER_SUPPORT) - tmp32 = func->start_line; - DUK_RAW_WRITEINC_U32_BE(p, tmp32); - tmp32 = func->end_line; - DUK_RAW_WRITEINC_U32_BE(p, tmp32); -#else - DUK_RAW_WRITEINC_U32_BE(p, 0); - DUK_RAW_WRITEINC_U32_BE(p, 0); -#endif - tmp32 = DUK_HEAPHDR_GET_FLAGS((duk_heaphdr *) func); /* masks flags, only duk_hobject flags */ - tmp32 &= ~(DUK_HOBJECT_FLAG_HAVE_FINALIZER); /* finalizer flag is lost */ - DUK_RAW_WRITEINC_U32_BE(p, tmp32); - - /* Bytecode instructions: endian conversion needed unless - * platform is big endian. - */ - ins = DUK_HCOMPFUNC_GET_CODE_BASE(thr->heap, func); - ins_end = DUK_HCOMPFUNC_GET_CODE_END(thr->heap, func); - DUK_ASSERT((duk_size_t) (ins_end - ins) == (duk_size_t) count_instr); -#if defined(DUK_USE_INTEGER_BE) - duk_memcpy_unsafe((void *) p, (const void *) ins, count_instr * sizeof(duk_instr_t)); - p += count_instr * sizeof(duk_instr_t); - DUK_UNREF(ins_end); -#else - while (ins != ins_end) { - tmp32 = (duk_uint32_t) (*ins); - DUK_RAW_WRITEINC_U32_BE(p, tmp32); - ins++; - } -#endif - - /* Constants: variable size encoding. */ - tv = DUK_HCOMPFUNC_GET_CONSTS_BASE(thr->heap, func); - tv_end = DUK_HCOMPFUNC_GET_CONSTS_END(thr->heap, func); - while (tv != tv_end) { - /* constants are strings or numbers now */ - DUK_ASSERT(DUK_TVAL_IS_STRING(tv) || DUK_TVAL_IS_NUMBER(tv)); - - if (DUK_TVAL_IS_STRING(tv)) { - h_str = DUK_TVAL_GET_STRING(tv); - DUK_ASSERT(h_str != NULL); - DUK_ASSERT(DUK_HSTRING_MAX_BYTELEN <= 0x7fffffffUL); /* ensures no overflow */ - p = DUK_BW_ENSURE_RAW(thr, bw_ctx, 1U + 4U + DUK_HSTRING_GET_BYTELEN(h_str), p); - *p++ = DUK__SER_STRING; - p = duk__dump_hstring_raw(p, h_str); - } else { - DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv)); - p = DUK_BW_ENSURE_RAW(thr, bw_ctx, 1U + 8U, p); - *p++ = DUK__SER_NUMBER; - d = DUK_TVAL_GET_NUMBER(tv); - DUK_RAW_WRITEINC_DOUBLE_BE(p, d); - } - tv++; - } - - /* Inner functions recursively. */ - fn = (duk_hobject **) DUK_HCOMPFUNC_GET_FUNCS_BASE(thr->heap, func); - fn_end = (duk_hobject **) DUK_HCOMPFUNC_GET_FUNCS_END(thr->heap, func); - while (fn != fn_end) { - /* XXX: This causes recursion up to inner function depth - * which is normally not an issue, e.g. mark-and-sweep uses - * a recursion limiter to avoid C stack issues. Avoiding - * this would mean some sort of a work list or just refusing - * to serialize deep functions. - */ - DUK_ASSERT(DUK_HOBJECT_IS_COMPFUNC(*fn)); - p = duk__dump_func(thr, (duk_hcompfunc *) *fn, bw_ctx, p); - fn++; - } - - /* Lexenv and varenv are not dumped. */ - - /* Object extra properties. - * - * There are some difference between function templates and functions. - * For example, function templates don't have .length and nargs is - * normally used to instantiate the functions. - */ - - p = duk__dump_uint32_prop(thr, p, bw_ctx, (duk_hobject *) func, DUK_STRIDX_LENGTH, (duk_uint32_t) func->nargs); -#if defined(DUK_USE_FUNC_NAME_PROPERTY) - p = duk__dump_string_prop(thr, p, bw_ctx, (duk_hobject *) func, DUK_STRIDX_NAME); -#endif -#if defined(DUK_USE_FUNC_FILENAME_PROPERTY) - p = duk__dump_string_prop(thr, p, bw_ctx, (duk_hobject *) func, DUK_STRIDX_FILE_NAME); -#endif -#if defined(DUK_USE_PC2LINE) - p = duk__dump_buffer_prop(thr, p, bw_ctx, (duk_hobject *) func, DUK_STRIDX_INT_PC2LINE); -#endif - p = duk__dump_varmap(thr, p, bw_ctx, (duk_hobject *) func); - p = duk__dump_formals(thr, p, bw_ctx, (duk_hobject *) func); - - DUK_DD(DUK_DDPRINT("serialized function %p -> final pointer %p", (void *) func, (void *) p)); - - return p; -} - -/* Load a function from bytecode. The function object returned here must - * match what is created by duk_js_push_closure() with respect to its flags, - * properties, etc. - * - * NOTE: there are intentionally no input buffer length / bound checks. - * Adding them would be easy but wouldn't ensure memory safety as untrusted - * or broken bytecode is unsafe during execution unless the opcodes themselves - * are validated (which is quite complex, especially for indirect opcodes). - */ - -#define DUK__ASSERT_LEFT(n) \ - do { \ - DUK_ASSERT((duk_size_t) (p_end - p) >= (duk_size_t) (n)); \ - } while (0) - -static const duk_uint8_t *duk__load_func(duk_hthread *thr, const duk_uint8_t *p, const duk_uint8_t *p_end) { - duk_hcompfunc *h_fun; - duk_hbuffer *h_data; - duk_size_t data_size; - duk_uint32_t count_instr, count_const, count_funcs; - duk_uint32_t n; - duk_uint32_t tmp32; - duk_small_uint_t const_type; - duk_uint8_t *fun_data; - duk_uint8_t *q; - duk_idx_t idx_base; - duk_tval *tv1; - duk_uarridx_t arr_idx; - duk_uarridx_t arr_limit; - duk_hobject *func_env; - duk_bool_t need_pop; - - /* XXX: There's some overlap with duk_js_closure() here, but - * seems difficult to share code. Ensure that the final function - * looks the same as created by duk_js_closure(). - */ - - DUK_ASSERT(thr != NULL); - - DUK_DD(DUK_DDPRINT("loading function, p=%p, p_end=%p", (const void *) p, (const void *) p_end)); - - DUK__ASSERT_LEFT(3 * 4); - count_instr = DUK_RAW_READINC_U32_BE(p); - count_const = DUK_RAW_READINC_U32_BE(p); - count_funcs = DUK_RAW_READINC_U32_BE(p); - - data_size = sizeof(duk_tval) * count_const + sizeof(duk_hobject *) * count_funcs + sizeof(duk_instr_t) * count_instr; - - DUK_DD(DUK_DDPRINT("instr=%ld, const=%ld, funcs=%ld, data_size=%ld", - (long) count_instr, - (long) count_const, - (long) count_const, - (long) data_size)); - - /* Value stack is used to ensure reachability of constants and - * inner functions being loaded. Require enough space to handle - * large functions correctly. - */ - duk_require_stack(thr, (duk_idx_t) (2 + count_const + count_funcs)); - idx_base = duk_get_top(thr); - - /* Push function object, init flags etc. This must match - * duk_js_push_closure() quite carefully. - */ - h_fun = duk_push_hcompfunc(thr); - DUK_ASSERT(h_fun != NULL); - DUK_ASSERT(DUK_HOBJECT_IS_COMPFUNC((duk_hobject *) h_fun)); - DUK_ASSERT(DUK_HCOMPFUNC_GET_DATA(thr->heap, h_fun) == NULL); - DUK_ASSERT(DUK_HCOMPFUNC_GET_FUNCS(thr->heap, h_fun) == NULL); - DUK_ASSERT(DUK_HCOMPFUNC_GET_BYTECODE(thr->heap, h_fun) == NULL); - DUK_ASSERT(DUK_HOBJECT_GET_PROTOTYPE(thr->heap, (duk_hobject *) h_fun) == thr->builtins[DUK_BIDX_FUNCTION_PROTOTYPE]); - - h_fun->nregs = DUK_RAW_READINC_U16_BE(p); - h_fun->nargs = DUK_RAW_READINC_U16_BE(p); -#if defined(DUK_USE_DEBUGGER_SUPPORT) - h_fun->start_line = DUK_RAW_READINC_U32_BE(p); - h_fun->end_line = DUK_RAW_READINC_U32_BE(p); -#else - p += 8; /* skip line info */ -#endif - - /* duk_hcompfunc flags; quite version specific */ - tmp32 = DUK_RAW_READINC_U32_BE(p); - DUK_HEAPHDR_SET_FLAGS((duk_heaphdr *) h_fun, tmp32); /* masks flags to only change duk_hobject flags */ - - /* standard prototype (no need to set here, already set) */ - DUK_ASSERT(DUK_HOBJECT_GET_PROTOTYPE(thr->heap, (duk_hobject *) h_fun) == thr->builtins[DUK_BIDX_FUNCTION_PROTOTYPE]); -#if 0 - DUK_HOBJECT_SET_PROTOTYPE_UPDREF(thr, &h_fun->obj, thr->builtins[DUK_BIDX_FUNCTION_PROTOTYPE]); -#endif - - /* assert just a few critical flags */ - DUK_ASSERT(DUK_HEAPHDR_GET_TYPE((duk_heaphdr *) h_fun) == DUK_HTYPE_OBJECT); - DUK_ASSERT(!DUK_HOBJECT_HAS_BOUNDFUNC(&h_fun->obj)); - DUK_ASSERT(DUK_HOBJECT_HAS_COMPFUNC(&h_fun->obj)); - DUK_ASSERT(!DUK_HOBJECT_HAS_NATFUNC(&h_fun->obj)); - DUK_ASSERT(!DUK_HOBJECT_IS_THREAD(&h_fun->obj)); - DUK_ASSERT(!DUK_HOBJECT_IS_PROXY(&h_fun->obj)); - DUK_ASSERT(!DUK_HOBJECT_HAS_EXOTIC_ARRAY(&h_fun->obj)); - DUK_ASSERT(!DUK_HOBJECT_HAS_EXOTIC_STRINGOBJ(&h_fun->obj)); - DUK_ASSERT(!DUK_HOBJECT_HAS_EXOTIC_ARGUMENTS(&h_fun->obj)); - - /* Create function 'data' buffer but don't attach it yet. */ - fun_data = (duk_uint8_t *) duk_push_fixed_buffer_nozero(thr, data_size); - DUK_ASSERT(fun_data != NULL); - - /* Load bytecode instructions. */ - DUK_ASSERT(sizeof(duk_instr_t) == 4); - DUK__ASSERT_LEFT(count_instr * sizeof(duk_instr_t)); -#if defined(DUK_USE_INTEGER_BE) - q = fun_data + sizeof(duk_tval) * count_const + sizeof(duk_hobject *) * count_funcs; - duk_memcpy((void *) q, (const void *) p, sizeof(duk_instr_t) * count_instr); - p += sizeof(duk_instr_t) * count_instr; -#else - q = fun_data + sizeof(duk_tval) * count_const + sizeof(duk_hobject *) * count_funcs; - for (n = count_instr; n > 0; n--) { - *((duk_instr_t *) (void *) q) = DUK_RAW_READINC_U32_BE(p); - q += sizeof(duk_instr_t); - } -#endif - - /* Load constants onto value stack but don't yet copy to buffer. */ - for (n = count_const; n > 0; n--) { - DUK__ASSERT_LEFT(1); - const_type = DUK_RAW_READINC_U8(p); - switch (const_type) { - case DUK__SER_STRING: { - p = duk__load_string_raw(thr, p); - break; - } - case DUK__SER_NUMBER: { - /* Important to do a fastint check so that constants are - * properly read back as fastints. - */ - duk_tval tv_tmp; - duk_double_t val; - DUK__ASSERT_LEFT(8); - val = DUK_RAW_READINC_DOUBLE_BE(p); - DUK_TVAL_SET_NUMBER_CHKFAST_SLOW(&tv_tmp, val); - duk_push_tval(thr, &tv_tmp); - break; - } - default: { - goto format_error; - } - } - } - - /* Load inner functions to value stack, but don't yet copy to buffer. */ - for (n = count_funcs; n > 0; n--) { - p = duk__load_func(thr, p, p_end); - if (p == NULL) { - goto format_error; - } - } - - /* With constants and inner functions on value stack, we can now - * atomically finish the function 'data' buffer, bump refcounts, - * etc. - * - * Here we take advantage of the value stack being just a duk_tval - * array: we can just memcpy() the constants as long as we incref - * them afterwards. - */ - - h_data = (duk_hbuffer *) duk_known_hbuffer(thr, idx_base + 1); - DUK_ASSERT(!DUK_HBUFFER_HAS_DYNAMIC(h_data)); - DUK_HCOMPFUNC_SET_DATA(thr->heap, h_fun, h_data); - DUK_HBUFFER_INCREF(thr, h_data); - - tv1 = duk_get_tval(thr, idx_base + 2); /* may be NULL if no constants or inner funcs */ - DUK_ASSERT((count_const == 0 && count_funcs == 0) || tv1 != NULL); - - q = fun_data; - duk_memcpy_unsafe((void *) q, (const void *) tv1, sizeof(duk_tval) * count_const); - for (n = count_const; n > 0; n--) { - DUK_TVAL_INCREF_FAST(thr, (duk_tval *) (void *) q); /* no side effects */ - q += sizeof(duk_tval); - } - tv1 += count_const; - - DUK_HCOMPFUNC_SET_FUNCS(thr->heap, h_fun, (duk_hobject **) (void *) q); - for (n = count_funcs; n > 0; n--) { - duk_hobject *h_obj; - - DUK_ASSERT(DUK_TVAL_IS_OBJECT(tv1)); - h_obj = DUK_TVAL_GET_OBJECT(tv1); - DUK_ASSERT(h_obj != NULL); - tv1++; - DUK_HOBJECT_INCREF(thr, h_obj); - - *((duk_hobject **) (void *) q) = h_obj; - q += sizeof(duk_hobject *); - } - - DUK_HCOMPFUNC_SET_BYTECODE(thr->heap, h_fun, (duk_instr_t *) (void *) q); - - /* The function object is now reachable and refcounts are fine, - * so we can pop off all the temporaries. - */ - DUK_DDD(DUK_DDDPRINT("function is reachable, reset top; func: %!iT", duk_get_tval(thr, idx_base))); - duk_set_top(thr, idx_base + 1); - - /* Setup function properties. */ - tmp32 = DUK_RAW_READINC_U32_BE(p); - duk_push_u32(thr, tmp32); - duk_xdef_prop_stridx_short(thr, -2, DUK_STRIDX_LENGTH, DUK_PROPDESC_FLAGS_C); - -#if defined(DUK_USE_FUNC_NAME_PROPERTY) - p = duk__load_string_raw(thr, p); /* -> [ func funcname ] */ - func_env = thr->builtins[DUK_BIDX_GLOBAL_ENV]; - DUK_ASSERT(func_env != NULL); - need_pop = 0; - if (DUK_HOBJECT_HAS_NAMEBINDING((duk_hobject *) h_fun)) { - /* Original function instance/template had NAMEBINDING. - * Must create a lexical environment on loading to allow - * recursive functions like 'function foo() { foo(); }'. - */ - duk_hdecenv *new_env; - - new_env = - duk_hdecenv_alloc(thr, DUK_HOBJECT_FLAG_EXTENSIBLE | DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_DECENV)); - DUK_ASSERT(new_env != NULL); - DUK_ASSERT(new_env->thread == NULL); /* Closed. */ - DUK_ASSERT(new_env->varmap == NULL); - DUK_ASSERT(new_env->regbase_byteoff == 0); - DUK_HDECENV_ASSERT_VALID(new_env); - DUK_ASSERT(DUK_HOBJECT_GET_PROTOTYPE(thr->heap, (duk_hobject *) new_env) == NULL); - DUK_HOBJECT_SET_PROTOTYPE(thr->heap, (duk_hobject *) new_env, func_env); - DUK_HOBJECT_INCREF(thr, func_env); - - func_env = (duk_hobject *) new_env; - - duk_push_hobject(thr, (duk_hobject *) new_env); - - duk_dup_m2(thr); /* -> [ func funcname env funcname ] */ - duk_dup(thr, idx_base); /* -> [ func funcname env funcname func ] */ - duk_xdef_prop(thr, -3, DUK_PROPDESC_FLAGS_NONE); /* -> [ func funcname env ] */ - - need_pop = 1; /* Need to pop env, but -after- updating h_fun and increfs. */ - } - DUK_ASSERT(func_env != NULL); - DUK_HCOMPFUNC_SET_LEXENV(thr->heap, h_fun, func_env); - DUK_HCOMPFUNC_SET_VARENV(thr->heap, h_fun, func_env); - DUK_HOBJECT_INCREF(thr, func_env); - DUK_HOBJECT_INCREF(thr, func_env); - if (need_pop) { - duk_pop(thr); - } - duk_xdef_prop_stridx_short(thr, -2, DUK_STRIDX_NAME, DUK_PROPDESC_FLAGS_C); -#endif /* DUK_USE_FUNC_NAME_PROPERTY */ - -#if defined(DUK_USE_FUNC_FILENAME_PROPERTY) - p = duk__load_string_raw(thr, p); - duk_xdef_prop_stridx_short(thr, -2, DUK_STRIDX_FILE_NAME, DUK_PROPDESC_FLAGS_C); -#endif /* DUK_USE_FUNC_FILENAME_PROPERTY */ - - if (DUK_HOBJECT_HAS_CONSTRUCTABLE((duk_hobject *) h_fun)) { - /* Restore empty external .prototype only for constructable - * functions. The prototype object should inherit from - * Object.prototype. - */ - duk_push_object(thr); - DUK_ASSERT(!duk_is_bare_object(thr, -1)); - duk_dup_m2(thr); - duk_xdef_prop_stridx_short(thr, - -2, - DUK_STRIDX_CONSTRUCTOR, - DUK_PROPDESC_FLAGS_WC); /* func.prototype.constructor = func */ - duk_compact_m1(thr); - duk_xdef_prop_stridx_short(thr, -2, DUK_STRIDX_PROTOTYPE, DUK_PROPDESC_FLAGS_W); - } - -#if defined(DUK_USE_PC2LINE) - p = duk__load_buffer_raw(thr, p); - duk_xdef_prop_stridx_short(thr, -2, DUK_STRIDX_INT_PC2LINE, DUK_PROPDESC_FLAGS_WC); -#endif /* DUK_USE_PC2LINE */ - - duk_push_bare_object(thr); /* _Varmap */ - for (;;) { - /* XXX: awkward */ - p = duk__load_string_raw(thr, p); - if (duk_get_length(thr, -1) == 0) { - duk_pop(thr); - break; - } - tmp32 = DUK_RAW_READINC_U32_BE(p); - duk_push_u32(thr, tmp32); - duk_put_prop(thr, -3); - } - duk_compact_m1(thr); - duk_xdef_prop_stridx_short(thr, -2, DUK_STRIDX_INT_VARMAP, DUK_PROPDESC_FLAGS_NONE); - - /* _Formals may have been missing in the original function, which is - * handled using a marker length. - */ - arr_limit = DUK_RAW_READINC_U32_BE(p); - if (arr_limit != DUK__NO_FORMALS) { - duk_push_bare_array(thr); /* _Formals */ - for (arr_idx = 0; arr_idx < arr_limit; arr_idx++) { - p = duk__load_string_raw(thr, p); - duk_put_prop_index(thr, -2, arr_idx); - } - duk_compact_m1(thr); - duk_xdef_prop_stridx_short(thr, -2, DUK_STRIDX_INT_FORMALS, DUK_PROPDESC_FLAGS_NONE); - } else { - DUK_DD(DUK_DDPRINT("no _Formals in dumped function")); - } - - /* Return with final function pushed on stack top. */ - DUK_DD(DUK_DDPRINT("final loaded function: %!iT", duk_get_tval(thr, -1))); - DUK_ASSERT_TOP(thr, idx_base + 1); - return p; - -format_error: - return NULL; -} - -DUK_EXTERNAL void duk_dump_function(duk_hthread *thr) { - duk_hcompfunc *func; - duk_bufwriter_ctx bw_ctx_alloc; - duk_bufwriter_ctx *bw_ctx = &bw_ctx_alloc; - duk_uint8_t *p; - - DUK_ASSERT_API_ENTRY(thr); - - /* Bound functions don't have all properties so we'd either need to - * lookup the non-bound target function or reject bound functions. - * For now, bound functions are rejected with TypeError. - */ - func = duk_require_hcompfunc(thr, -1); - DUK_ASSERT(func != NULL); - DUK_ASSERT(!DUK_HOBJECT_HAS_BOUNDFUNC(&func->obj)); - - /* Estimating the result size beforehand would be costly, so - * start with a reasonable size and extend as needed. - */ - DUK_BW_INIT_PUSHBUF(thr, bw_ctx, DUK__BYTECODE_INITIAL_ALLOC); - p = DUK_BW_GET_PTR(thr, bw_ctx); - *p++ = DUK__SER_MARKER; - p = duk__dump_func(thr, func, bw_ctx, p); - DUK_BW_SET_PTR(thr, bw_ctx, p); - DUK_BW_COMPACT(thr, bw_ctx); - - DUK_DD(DUK_DDPRINT("serialized result: %!T", duk_get_tval(thr, -1))); - - duk_remove_m2(thr); /* [ ... func buf ] -> [ ... buf ] */ -} - -DUK_EXTERNAL void duk_load_function(duk_hthread *thr) { - const duk_uint8_t *p_buf, *p, *p_end; - duk_size_t sz; - - DUK_ASSERT_API_ENTRY(thr); - - p_buf = (duk_uint8_t *) duk_require_buffer(thr, -1, &sz); - DUK_ASSERT(p_buf != NULL); - - /* The caller is responsible for being sure that bytecode being loaded - * is valid and trusted. Invalid bytecode can cause memory unsafe - * behavior directly during loading or later during bytecode execution - * (instruction validation would be quite complex to implement). - * - * This signature check is the only sanity check for detecting - * accidental invalid inputs. The initial byte ensures no ordinary - * string or Symbol will be accepted by accident. - */ - p = p_buf; - p_end = p_buf + sz; - if (sz < 1 || p[0] != DUK__SER_MARKER) { - goto format_error; - } - p++; - - p = duk__load_func(thr, p, p_end); - if (p == NULL) { - goto format_error; - } - - duk_remove_m2(thr); /* [ ... buf func ] -> [ ... func ] */ - return; - -format_error: - DUK_ERROR_TYPE(thr, DUK_STR_INVALID_BYTECODE); - DUK_WO_NORETURN(return;); -} - -#else /* DUK_USE_BYTECODE_DUMP_SUPPORT */ - -DUK_EXTERNAL void duk_dump_function(duk_hthread *thr) { - DUK_ASSERT_API_ENTRY(thr); - DUK_ERROR_UNSUPPORTED(thr); - DUK_WO_NORETURN(return;); -} - -DUK_EXTERNAL void duk_load_function(duk_hthread *thr) { - DUK_ASSERT_API_ENTRY(thr); - DUK_ERROR_UNSUPPORTED(thr); - DUK_WO_NORETURN(return;); -} - -#endif /* DUK_USE_BYTECODE_DUMP_SUPPORT */ - -/* automatic undefs */ -#undef DUK__ASSERT_LEFT -#undef DUK__BYTECODE_INITIAL_ALLOC -#undef DUK__NO_FORMALS -#undef DUK__SER_MARKER -#undef DUK__SER_NUMBER -#undef DUK__SER_STRING -#line 1 "duk_api_call.c" -/* - * Calls. - * - * Protected variants should avoid ever throwing an error. Must be careful - * to catch errors related to value stack manipulation and property lookup, - * not just the call itself. - * - * The only exception is when arguments are insane, e.g. nargs/nrets are out - * of bounds; in such cases an error is thrown for two reasons. First, we - * can't always respect the value stack input/output guarantees in such cases - * so the caller would end up with the value stack in an unexpected state. - * Second, an attempt to create an error might itself fail (although this - * could be avoided by pushing a preallocated object/string or a primitive - * value). - */ - -/* #include duk_internal.h -> already included */ - -/* - * Helpers - */ - -struct duk__pcall_prop_args { - duk_idx_t obj_idx; - duk_idx_t nargs; - duk_small_uint_t call_flags; -}; -typedef struct duk__pcall_prop_args duk__pcall_prop_args; - -struct duk__pcall_method_args { - duk_idx_t nargs; - duk_small_uint_t call_flags; -}; -typedef struct duk__pcall_method_args duk__pcall_method_args; - -struct duk__pcall_args { - duk_idx_t nargs; - duk_small_uint_t call_flags; -}; -typedef struct duk__pcall_args duk__pcall_args; - -/* Compute and validate idx_func for a certain 'nargs' and 'other' - * parameter count (1 or 2, depending on whether 'this' binding is - * present). - */ -DUK_LOCAL duk_idx_t duk__call_get_idx_func(duk_hthread *thr, duk_idx_t nargs, duk_idx_t other) { - duk_idx_t idx_func; - - /* XXX: byte arithmetic? */ - - DUK_ASSERT(other >= 0); - - idx_func = duk_get_top(thr) - nargs - other; - if (DUK_UNLIKELY((idx_func | nargs) < 0)) { /* idx_func < 0 || nargs < 0; OR sign bits */ - DUK_ERROR_TYPE_INVALID_ARGS(thr); - DUK_WO_NORETURN(return 0;); - } - DUK_ASSERT(duk_is_valid_index(thr, idx_func)); - return idx_func; -} - -/* Compute idx_func, assume index will be valid. This is a valid assumption - * for protected calls: nargs < 0 is checked explicitly and duk_safe_call() - * validates the argument count. - */ -DUK_LOCAL duk_idx_t duk__call_get_idx_func_unvalidated(duk_hthread *thr, duk_idx_t nargs, duk_idx_t other) { - duk_idx_t idx_func; - - /* XXX: byte arithmetic? */ - - DUK_ASSERT(nargs >= 0); - DUK_ASSERT(other >= 0); - - idx_func = duk_get_top(thr) - nargs - other; - DUK_ASSERT(idx_func >= 0); - DUK_ASSERT(duk_is_valid_index(thr, idx_func)); - return idx_func; -} - -/* Prepare value stack for a method call through an object property. - * May currently throw an error e.g. when getting the property. - */ -DUK_LOCAL void duk__call_prop_prep_stack(duk_hthread *thr, duk_idx_t normalized_obj_idx, duk_idx_t nargs) { - DUK_CTX_ASSERT_VALID(thr); - DUK_ASSERT(nargs >= 0); - - DUK_DDD(DUK_DDDPRINT("duk__call_prop_prep_stack, normalized_obj_idx=%ld, nargs=%ld, stacktop=%ld", - (long) normalized_obj_idx, - (long) nargs, - (long) duk_get_top(thr))); - - /* [... key arg1 ... argN] */ - - /* duplicate key */ - duk_dup(thr, -nargs - 1); /* Note: -nargs alone would fail for nargs == 0, this is OK */ - (void) duk_get_prop(thr, normalized_obj_idx); - - DUK_DDD(DUK_DDDPRINT("func: %!T", (duk_tval *) duk_get_tval(thr, -1))); - -#if defined(DUK_USE_VERBOSE_ERRORS) - if (DUK_UNLIKELY(!duk_is_callable(thr, -1))) { - duk_tval *tv_base; - duk_tval *tv_key; - - /* tv_targ is passed on stack top (at index -1). */ - tv_base = DUK_GET_TVAL_POSIDX(thr, normalized_obj_idx); - tv_key = DUK_GET_TVAL_NEGIDX(thr, -nargs - 2); - DUK_ASSERT(tv_base >= thr->valstack_bottom && tv_base < thr->valstack_top); - DUK_ASSERT(tv_key >= thr->valstack_bottom && tv_key < thr->valstack_top); - - duk_call_setup_propcall_error(thr, tv_base, tv_key); - } -#endif - - /* [... key arg1 ... argN func] */ - - duk_replace(thr, -nargs - 2); - - /* [... func arg1 ... argN] */ - - duk_dup(thr, normalized_obj_idx); - duk_insert(thr, -nargs - 1); - - /* [... func this arg1 ... argN] */ -} - -DUK_EXTERNAL void duk_call(duk_hthread *thr, duk_idx_t nargs) { - duk_small_uint_t call_flags; - duk_idx_t idx_func; - - DUK_ASSERT_API_ENTRY(thr); - - idx_func = duk__call_get_idx_func(thr, nargs, 1); - DUK_ASSERT(duk_is_valid_index(thr, idx_func)); - - duk_insert_undefined(thr, idx_func + 1); - - call_flags = 0; /* not protected, respect reclimit, not constructor */ - duk_handle_call_unprotected(thr, idx_func, call_flags); -} - -DUK_EXTERNAL void duk_call_method(duk_hthread *thr, duk_idx_t nargs) { - duk_small_uint_t call_flags; - duk_idx_t idx_func; - - DUK_ASSERT_API_ENTRY(thr); - - idx_func = duk__call_get_idx_func(thr, nargs, 2); - DUK_ASSERT(duk_is_valid_index(thr, idx_func)); - - call_flags = 0; /* not protected, respect reclimit, not constructor */ - duk_handle_call_unprotected(thr, idx_func, call_flags); -} - -DUK_EXTERNAL void duk_call_prop(duk_hthread *thr, duk_idx_t obj_idx, duk_idx_t nargs) { - /* - * XXX: if duk_handle_call() took values through indices, this could be - * made much more sensible. However, duk_handle_call() needs to fudge - * the 'this' and 'func' values to handle bound functions, which is now - * done "in-place", so this is not a trivial change. - */ - - DUK_ASSERT_API_ENTRY(thr); - - obj_idx = duk_require_normalize_index(thr, obj_idx); /* make absolute */ - if (DUK_UNLIKELY(nargs < 0)) { - DUK_ERROR_TYPE_INVALID_ARGS(thr); - DUK_WO_NORETURN(return;); - } - - duk__call_prop_prep_stack(thr, obj_idx, nargs); - - duk_call_method(thr, nargs); -} - -DUK_LOCAL duk_ret_t duk__pcall_raw(duk_hthread *thr, void *udata) { - duk__pcall_args *args; - duk_idx_t idx_func; - duk_int_t ret; - - DUK_CTX_ASSERT_VALID(thr); - DUK_ASSERT(udata != NULL); - - args = (duk__pcall_args *) udata; - idx_func = duk__call_get_idx_func_unvalidated(thr, args->nargs, 1); - DUK_ASSERT(duk_is_valid_index(thr, idx_func)); - - duk_insert_undefined(thr, idx_func + 1); - - ret = duk_handle_call_unprotected(thr, idx_func, args->call_flags); - DUK_ASSERT(ret == 0); - DUK_UNREF(ret); - - return 1; -} - -DUK_EXTERNAL duk_int_t duk_pcall(duk_hthread *thr, duk_idx_t nargs) { - duk__pcall_args args; - - DUK_ASSERT_API_ENTRY(thr); - - args.nargs = nargs; - if (DUK_UNLIKELY(nargs < 0)) { - DUK_ERROR_TYPE_INVALID_ARGS(thr); - DUK_WO_NORETURN(return DUK_EXEC_ERROR;); - } - args.call_flags = 0; - - return duk_safe_call(thr, duk__pcall_raw, (void *) &args /*udata*/, nargs + 1 /*nargs*/, 1 /*nrets*/); -} - -DUK_LOCAL duk_ret_t duk__pcall_method_raw(duk_hthread *thr, void *udata) { - duk__pcall_method_args *args; - duk_idx_t idx_func; - duk_int_t ret; - - DUK_CTX_ASSERT_VALID(thr); - DUK_ASSERT(udata != NULL); - - args = (duk__pcall_method_args *) udata; - - idx_func = duk__call_get_idx_func_unvalidated(thr, args->nargs, 2); - DUK_ASSERT(duk_is_valid_index(thr, idx_func)); - - ret = duk_handle_call_unprotected(thr, idx_func, args->call_flags); - DUK_ASSERT(ret == 0); - DUK_UNREF(ret); - - return 1; -} - -DUK_INTERNAL duk_int_t duk_pcall_method_flags(duk_hthread *thr, duk_idx_t nargs, duk_small_uint_t call_flags) { - duk__pcall_method_args args; - - DUK_ASSERT_API_ENTRY(thr); - - args.nargs = nargs; - if (DUK_UNLIKELY(nargs < 0)) { - DUK_ERROR_TYPE_INVALID_ARGS(thr); - DUK_WO_NORETURN(return DUK_EXEC_ERROR;); - } - args.call_flags = call_flags; - - return duk_safe_call(thr, duk__pcall_method_raw, (void *) &args /*udata*/, nargs + 2 /*nargs*/, 1 /*nrets*/); -} - -DUK_EXTERNAL duk_int_t duk_pcall_method(duk_hthread *thr, duk_idx_t nargs) { - DUK_ASSERT_API_ENTRY(thr); - - return duk_pcall_method_flags(thr, nargs, 0); -} - -DUK_LOCAL duk_ret_t duk__pcall_prop_raw(duk_hthread *thr, void *udata) { - duk__pcall_prop_args *args; - duk_idx_t obj_idx; - duk_int_t ret; - - DUK_CTX_ASSERT_VALID(thr); - DUK_ASSERT(udata != NULL); - - args = (duk__pcall_prop_args *) udata; - - obj_idx = duk_require_normalize_index(thr, args->obj_idx); /* make absolute */ - duk__call_prop_prep_stack(thr, obj_idx, args->nargs); - - ret = duk_handle_call_unprotected_nargs(thr, args->nargs, args->call_flags); - DUK_ASSERT(ret == 0); - DUK_UNREF(ret); - return 1; -} - -DUK_EXTERNAL duk_int_t duk_pcall_prop(duk_hthread *thr, duk_idx_t obj_idx, duk_idx_t nargs) { - duk__pcall_prop_args args; - - DUK_ASSERT_API_ENTRY(thr); - - args.obj_idx = obj_idx; - args.nargs = nargs; - if (DUK_UNLIKELY(nargs < 0)) { - DUK_ERROR_TYPE_INVALID_ARGS(thr); - DUK_WO_NORETURN(return DUK_EXEC_ERROR;); - } - args.call_flags = 0; - - return duk_safe_call(thr, duk__pcall_prop_raw, (void *) &args /*udata*/, nargs + 1 /*nargs*/, 1 /*nrets*/); -} - -DUK_EXTERNAL duk_int_t duk_safe_call(duk_hthread *thr, duk_safe_call_function func, void *udata, duk_idx_t nargs, duk_idx_t nrets) { - duk_int_t rc; - - DUK_ASSERT_API_ENTRY(thr); - - /* nargs condition; fail if: top - bottom < nargs - * <=> top < bottom + nargs - * nrets condition; fail if: end - (top - nargs) < nrets - * <=> end - top + nargs < nrets - * <=> end + nargs < top + nrets - */ - /* XXX: check for any reserve? */ - - if (DUK_UNLIKELY((nargs | nrets) < 0 || /* nargs < 0 || nrets < 0; OR sign bits */ - thr->valstack_top < thr->valstack_bottom + nargs || /* nargs too large compared to top */ - thr->valstack_end + nargs < thr->valstack_top + nrets)) { /* nrets too large compared to reserve */ - DUK_D(DUK_DPRINT("not enough stack reserve for safe call or invalid arguments: " - "nargs=%ld < 0 (?), nrets=%ld < 0 (?), top=%ld < bottom=%ld + nargs=%ld (?), " - "end=%ld + nargs=%ld < top=%ld + nrets=%ld (?)", - (long) nargs, - (long) nrets, - (long) (thr->valstack_top - thr->valstack), - (long) (thr->valstack_bottom - thr->valstack), - (long) nargs, - (long) (thr->valstack_end - thr->valstack), - (long) nargs, - (long) (thr->valstack_top - thr->valstack), - (long) nrets)); - DUK_ERROR_TYPE_INVALID_ARGS(thr); - DUK_WO_NORETURN(return DUK_EXEC_ERROR;); - } - - rc = duk_handle_safe_call(thr, /* thread */ - func, /* func */ - udata, /* udata */ - nargs, /* num_stack_args */ - nrets); /* num_stack_res */ - - return rc; -} - -DUK_EXTERNAL void duk_new(duk_hthread *thr, duk_idx_t nargs) { - duk_idx_t idx_func; - - DUK_ASSERT_API_ENTRY(thr); - - idx_func = duk__call_get_idx_func(thr, nargs, 1); - DUK_ASSERT(duk_is_valid_index(thr, idx_func)); - - duk_push_object(thr); /* default instance; internal proto updated by call handling */ - duk_insert(thr, idx_func + 1); - - duk_handle_call_unprotected(thr, idx_func, DUK_CALL_FLAG_CONSTRUCT); -} - -DUK_LOCAL duk_ret_t duk__pnew_helper(duk_hthread *thr, void *udata) { - duk_idx_t nargs; - - DUK_ASSERT(udata != NULL); - nargs = *((duk_idx_t *) udata); - - duk_new(thr, nargs); - return 1; -} - -DUK_EXTERNAL duk_int_t duk_pnew(duk_hthread *thr, duk_idx_t nargs) { - duk_int_t rc; - - DUK_ASSERT_API_ENTRY(thr); - - /* For now, just use duk_safe_call() to wrap duk_new(). We can't - * simply use a protected duk_handle_call() because pushing the - * default instance might throw. - */ - - if (DUK_UNLIKELY(nargs < 0)) { - DUK_ERROR_TYPE_INVALID_ARGS(thr); - DUK_WO_NORETURN(return DUK_EXEC_ERROR;); - } - - rc = duk_safe_call(thr, duk__pnew_helper, (void *) &nargs /*udata*/, nargs + 1 /*nargs*/, 1 /*nrets*/); - return rc; -} - -DUK_EXTERNAL duk_bool_t duk_is_constructor_call(duk_hthread *thr) { - duk_activation *act; - - DUK_ASSERT_API_ENTRY(thr); - - act = thr->callstack_curr; - if (act != NULL) { - return ((act->flags & DUK_ACT_FLAG_CONSTRUCT) != 0 ? 1 : 0); - } - return 0; -} - -DUK_EXTERNAL void duk_require_constructor_call(duk_hthread *thr) { - DUK_ASSERT_API_ENTRY(thr); - - if (!duk_is_constructor_call(thr)) { - DUK_ERROR_TYPE(thr, DUK_STR_CONSTRUCT_ONLY); - DUK_WO_NORETURN(return;); - } -} - -DUK_EXTERNAL duk_bool_t duk_is_strict_call(duk_hthread *thr) { - duk_activation *act; - - /* For user code this could just return 1 (strict) always - * because all Duktape/C functions are considered strict, - * and strict is also the default when nothing is running. - * However, Duktape may call this function internally when - * the current activation is an ECMAScript function, so - * this cannot be replaced by a 'return 1' without fixing - * the internal call sites. - */ - - DUK_ASSERT_API_ENTRY(thr); - - act = thr->callstack_curr; - if (act != NULL) { - return ((act->flags & DUK_ACT_FLAG_STRICT) != 0 ? 1 : 0); - } else { - /* Strict by default. */ - return 1; - } -} - -/* - * Duktape/C function magic - */ - -DUK_EXTERNAL duk_int_t duk_get_current_magic(duk_hthread *thr) { - duk_activation *act; - duk_hobject *func; - - DUK_ASSERT_API_ENTRY(thr); - - act = thr->callstack_curr; - if (act) { - func = DUK_ACT_GET_FUNC(act); - if (!func) { - duk_tval *tv = &act->tv_func; - duk_small_uint_t lf_flags; - lf_flags = DUK_TVAL_GET_LIGHTFUNC_FLAGS(tv); - return (duk_int_t) DUK_LFUNC_FLAGS_GET_MAGIC(lf_flags); - } - DUK_ASSERT(func != NULL); - - if (DUK_HOBJECT_IS_NATFUNC(func)) { - duk_hnatfunc *nf = (duk_hnatfunc *) func; - return (duk_int_t) nf->magic; - } - } - return 0; -} - -DUK_EXTERNAL duk_int_t duk_get_magic(duk_hthread *thr, duk_idx_t idx) { - duk_tval *tv; - duk_hobject *h; - - DUK_ASSERT_API_ENTRY(thr); - - tv = duk_require_tval(thr, idx); - if (DUK_TVAL_IS_OBJECT(tv)) { - h = DUK_TVAL_GET_OBJECT(tv); - DUK_ASSERT(h != NULL); - if (!DUK_HOBJECT_HAS_NATFUNC(h)) { - goto type_error; - } - return (duk_int_t) ((duk_hnatfunc *) h)->magic; - } else if (DUK_TVAL_IS_LIGHTFUNC(tv)) { - duk_small_uint_t lf_flags = DUK_TVAL_GET_LIGHTFUNC_FLAGS(tv); - return (duk_int_t) DUK_LFUNC_FLAGS_GET_MAGIC(lf_flags); - } - - /* fall through */ -type_error: - DUK_ERROR_TYPE(thr, DUK_STR_UNEXPECTED_TYPE); - DUK_WO_NORETURN(return 0;); -} - -DUK_EXTERNAL void duk_set_magic(duk_hthread *thr, duk_idx_t idx, duk_int_t magic) { - duk_hnatfunc *nf; - - DUK_ASSERT_API_ENTRY(thr); - - nf = duk_require_hnatfunc(thr, idx); - DUK_ASSERT(nf != NULL); - nf->magic = (duk_int16_t) magic; -} - -/* - * Misc helpers - */ - -/* Resolve a bound function on value stack top to a non-bound target - * (leave other values as is). - */ -DUK_INTERNAL void duk_resolve_nonbound_function(duk_hthread *thr) { - duk_tval *tv; - - DUK_HTHREAD_ASSERT_VALID(thr); - - tv = DUK_GET_TVAL_NEGIDX(thr, -1); - if (DUK_TVAL_IS_OBJECT(tv)) { - duk_hobject *h; - - h = DUK_TVAL_GET_OBJECT(tv); - DUK_ASSERT(h != NULL); - if (DUK_HOBJECT_HAS_BOUNDFUNC(h)) { - duk_push_tval(thr, &((duk_hboundfunc *) (void *) h)->target); - duk_replace(thr, -2); -#if 0 - DUK_TVAL_SET_TVAL(tv, &((duk_hboundfunc *) h)->target); - DUK_TVAL_INCREF(thr, tv); - DUK_HOBJECT_DECREF_NORZ(thr, h); -#endif - /* Rely on Function.prototype.bind() on never creating a bound - * function whose target is not proper. This is now safe - * because the target is not even an internal property but a - * struct member. - */ - DUK_ASSERT(duk_is_lightfunc(thr, -1) || duk_is_callable(thr, -1)); - } - } - - /* Lightfuncs cannot be bound but are always callable and - * constructable. - */ -} -#line 1 "duk_api_codec.c" -/* - * Encoding and decoding basic formats: hex, base64. - * - * These are in-place operations which may allow an optimized implementation. - * - * Base-64: https://tools.ietf.org/html/rfc4648#section-4 - */ - -/* #include duk_internal.h -> already included */ - -/* - * Misc helpers - */ - -/* Shared handling for encode/decode argument. Fast path handling for - * buffer and string values because they're the most common. In particular, - * avoid creating a temporary string or buffer when possible. Return value - * is guaranteed to be non-NULL, even for zero length input. - */ -DUK_LOCAL const duk_uint8_t *duk__prep_codec_arg(duk_hthread *thr, duk_idx_t idx, duk_size_t *out_len) { - const void *def_ptr = (const void *) out_len; /* Any non-NULL pointer will do. */ - const void *ptr; - duk_bool_t isbuffer; - - DUK_ASSERT(out_len != NULL); - DUK_ASSERT(def_ptr != NULL); - DUK_ASSERT(duk_is_valid_index(thr, idx)); /* checked by caller */ - - ptr = (const void *) - duk_get_buffer_data_raw(thr, idx, out_len, NULL /*def_ptr*/, 0 /*def_size*/, 0 /*throw_flag*/, &isbuffer); - if (isbuffer) { - DUK_ASSERT(ptr != NULL || *out_len == 0U); - if (DUK_UNLIKELY(ptr == NULL)) { - ptr = def_ptr; - } - DUK_ASSERT(ptr != NULL); - } else { - /* For strings a non-NULL pointer is always guaranteed because - * at least a NUL will be present. - */ - ptr = (const void *) duk_to_lstring(thr, idx, out_len); - DUK_ASSERT(ptr != NULL); - } - DUK_ASSERT(ptr != NULL); - return (const duk_uint8_t *) ptr; -} - -/* - * Base64 - */ - -#if defined(DUK_USE_BASE64_SUPPORT) -/* Bytes emitted for number of padding characters in range [0,4]. */ -DUK_LOCAL const duk_int8_t duk__base64_decode_nequal_step[5] = { - 3, /* #### -> 24 bits, emit 3 bytes */ - 2, /* ###= -> 18 bits, emit 2 bytes */ - 1, /* ##== -> 12 bits, emit 1 byte */ - -1, /* #=== -> 6 bits, error */ - 0, /* ==== -> 0 bits, emit 0 bytes */ -}; - -#if defined(DUK_USE_BASE64_FASTPATH) -DUK_LOCAL const duk_uint8_t duk__base64_enctab_fast[64] = { - 0x41U, 0x42U, 0x43U, 0x44U, 0x45U, 0x46U, 0x47U, 0x48U, 0x49U, 0x4aU, 0x4bU, 0x4cU, 0x4dU, 0x4eU, 0x4fU, 0x50U, /* A...P */ - 0x51U, 0x52U, 0x53U, 0x54U, 0x55U, 0x56U, 0x57U, 0x58U, 0x59U, 0x5aU, 0x61U, 0x62U, 0x63U, 0x64U, 0x65U, 0x66U, /* Q...f */ - 0x67U, 0x68U, 0x69U, 0x6aU, 0x6bU, 0x6cU, 0x6dU, 0x6eU, 0x6fU, 0x70U, 0x71U, 0x72U, 0x73U, 0x74U, 0x75U, 0x76U, /* g...v */ - 0x77U, 0x78U, 0x79U, 0x7aU, 0x30U, 0x31U, 0x32U, 0x33U, 0x34U, 0x35U, 0x36U, 0x37U, 0x38U, 0x39U, 0x2bU, 0x2fU /* w.../ */ -}; -#endif /* DUK_USE_BASE64_FASTPATH */ - -#if defined(DUK_USE_BASE64_FASTPATH) -/* Decode table for one byte of input: - * -1 = allowed whitespace - * -2 = padding - * -3 = error - * 0...63 decoded bytes - */ -DUK_LOCAL const duk_int8_t duk__base64_dectab_fast[256] = { - -3, -3, -3, -3, -3, -3, -3, -3, -3, -1, -1, -3, -3, -1, -3, -3, /* 0x00...0x0f */ - -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, /* 0x10...0x1f */ - -1, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, 62, -3, -3, -3, 63, /* 0x20...0x2f */ - 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, -3, -3, -3, -2, -3, -3, /* 0x30...0x3f */ - -3, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, /* 0x40...0x4f */ - 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, -3, -3, -3, -3, -3, /* 0x50...0x5f */ - -3, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, /* 0x60...0x6f */ - 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, -3, -3, -3, -3, -3, /* 0x70...0x7f */ - -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, /* 0x80...0x8f */ - -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, /* 0x90...0x9f */ - -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, /* 0xa0...0xaf */ - -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, /* 0xb0...0xbf */ - -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, /* 0xc0...0xcf */ - -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, /* 0xd0...0xdf */ - -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, /* 0xe0...0xef */ - -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3 /* 0xf0...0xff */ -}; -#endif /* DUK_USE_BASE64_FASTPATH */ - -#if defined(DUK_USE_BASE64_FASTPATH) -DUK_LOCAL DUK_ALWAYS_INLINE void duk__base64_encode_fast_3(const duk_uint8_t *src, duk_uint8_t *dst) { - duk_uint_t t; - - t = (duk_uint_t) src[0]; - t = (t << 8) + (duk_uint_t) src[1]; - t = (t << 8) + (duk_uint_t) src[2]; - - dst[0] = duk__base64_enctab_fast[t >> 18]; - dst[1] = duk__base64_enctab_fast[(t >> 12) & 0x3fU]; - dst[2] = duk__base64_enctab_fast[(t >> 6) & 0x3fU]; - dst[3] = duk__base64_enctab_fast[t & 0x3fU]; - -#if 0 - /* Tested: not faster on x64, most likely due to aliasing between - * output and input index computation. - */ - /* aaaaaabb bbbbcccc ccdddddd */ - dst[0] = duk__base64_enctab_fast[(src[0] >> 2) & 0x3fU]; - dst[1] = duk__base64_enctab_fast[((src[0] << 4) & 0x30U) | ((src[1] >> 4) & 0x0fU)]; - dst[2] = duk__base64_enctab_fast[((src[1] << 2) & 0x3fU) | ((src[2] >> 6) & 0x03U)]; - dst[3] = duk__base64_enctab_fast[src[2] & 0x3fU]; -#endif -} - -DUK_LOCAL DUK_ALWAYS_INLINE void duk__base64_encode_fast_2(const duk_uint8_t *src, duk_uint8_t *dst) { - duk_uint_t t; - - t = (duk_uint_t) src[0]; - t = (t << 8) + (duk_uint_t) src[1]; - dst[0] = duk__base64_enctab_fast[t >> 10]; /* XXXXXX-- -------- */ - dst[1] = duk__base64_enctab_fast[(t >> 4) & 0x3fU]; /* ------XX XXXX---- */ - dst[2] = duk__base64_enctab_fast[(t << 2) & 0x3fU]; /* -------- ----XXXX */ - dst[3] = DUK_ASC_EQUALS; -} - -DUK_LOCAL DUK_ALWAYS_INLINE void duk__base64_encode_fast_1(const duk_uint8_t *src, duk_uint8_t *dst) { - duk_uint_t t; - - t = (duk_uint_t) src[0]; - dst[0] = duk__base64_enctab_fast[t >> 2]; /* XXXXXX-- */ - dst[1] = duk__base64_enctab_fast[(t << 4) & 0x3fU]; /* ------XX */ - dst[2] = DUK_ASC_EQUALS; - dst[3] = DUK_ASC_EQUALS; -} - -DUK_LOCAL void duk__base64_encode_helper(const duk_uint8_t *src, duk_size_t srclen, duk_uint8_t *dst) { - duk_size_t n; - const duk_uint8_t *p; - duk_uint8_t *q; - - n = srclen; - p = src; - q = dst; - - if (n >= 16U) { - /* Fast path, unrolled by 4, allows interleaving. Process - * 12-byte input chunks which encode to 16-char output chunks. - * Only enter when at least one block is emitted (avoids div+mul - * for short inputs too). - */ - const duk_uint8_t *p_end_fast; - - p_end_fast = p + ((n / 12U) * 12U); - DUK_ASSERT(p_end_fast >= p + 12); - do { - duk__base64_encode_fast_3(p, q); - duk__base64_encode_fast_3(p + 3, q + 4); - duk__base64_encode_fast_3(p + 6, q + 8); - duk__base64_encode_fast_3(p + 9, q + 12); - p += 12; - q += 16; - } while (DUK_LIKELY(p != p_end_fast)); - - DUK_ASSERT(src + srclen >= p); - n = (duk_size_t) (src + srclen - p); - DUK_ASSERT(n < 12U); - } - - /* Remainder. */ - while (n >= 3U) { - duk__base64_encode_fast_3(p, q); - p += 3; - q += 4; - n -= 3U; - } - DUK_ASSERT(n == 0U || n == 1U || n == 2U); - if (n == 1U) { - duk__base64_encode_fast_1(p, q); -#if 0 /* Unnecessary. */ - p += 1; - q += 4; - n -= 1U; -#endif - } else if (n == 2U) { - duk__base64_encode_fast_2(p, q); -#if 0 /* Unnecessary. */ - p += 2; - q += 4; - n -= 2U; -#endif - } else { - DUK_ASSERT(n == 0U); /* nothing to do */ - ; - } -} -#else /* DUK_USE_BASE64_FASTPATH */ -DUK_LOCAL void duk__base64_encode_helper(const duk_uint8_t *src, duk_size_t srclen, duk_uint8_t *dst) { - duk_small_uint_t i, npad; - duk_uint_t t, x, y; - const duk_uint8_t *p; - const duk_uint8_t *p_end; - duk_uint8_t *q; - - p = src; - p_end = src + srclen; - q = dst; - npad = 0U; - - while (p < p_end) { - /* Read 3 bytes into 't', padded by zero. */ - t = 0; - for (i = 0; i < 3; i++) { - t = t << 8; - if (p < p_end) { - t += (duk_uint_t) (*p++); - } else { - /* This only happens on the last loop and we're - * guaranteed to exit on the next loop. - */ - npad++; - } - } - DUK_ASSERT(npad <= 2U); - - /* Emit 4 encoded characters. If npad > 0, some of the - * chars will be incorrect (zero bits) but we fix up the - * padding after the loop. A straightforward 64-byte - * lookup would be faster and cleaner, but this is shorter. - */ - for (i = 0; i < 4; i++) { - x = ((t >> 18) & 0x3fU); - t = t << 6; - - if (x <= 51U) { - if (x <= 25) { - y = x + DUK_ASC_UC_A; - } else { - y = x - 26 + DUK_ASC_LC_A; - } - } else { - if (x <= 61U) { - y = x - 52 + DUK_ASC_0; - } else if (x == 62) { - y = DUK_ASC_PLUS; - } else { - DUK_ASSERT(x == 63); - y = DUK_ASC_SLASH; - } - } - - *q++ = (duk_uint8_t) y; - } - } - - /* Handle padding by rewriting 0-2 bogus characters at the end. - * - * Missing bytes npad base64 example - * 0 0 #### - * 1 1 ###= - * 2 2 ##== - */ - DUK_ASSERT(npad <= 2U); - while (npad > 0U) { - *(q - npad) = DUK_ASC_EQUALS; - npad--; - } -} -#endif /* DUK_USE_BASE64_FASTPATH */ - -#if defined(DUK_USE_BASE64_FASTPATH) -DUK_LOCAL duk_bool_t duk__base64_decode_helper(const duk_uint8_t *src, - duk_size_t srclen, - duk_uint8_t *dst, - duk_uint8_t **out_dst_final) { - duk_int_t x; - duk_uint_t t; - duk_small_uint_t n_equal; - duk_int8_t step; - const duk_uint8_t *p; - const duk_uint8_t *p_end; - const duk_uint8_t *p_end_safe; - duk_uint8_t *q; - - DUK_ASSERT(src != NULL); /* Required by pointer arithmetic below, which fails for NULL. */ - - p = src; - p_end = src + srclen; - p_end_safe = p_end - 8; /* If 'src <= src_end_safe', safe to read 8 bytes. */ - q = dst; - - /* Alternate between a fast path which processes clean groups with no - * padding or whitespace, and a slow path which processes one arbitrary - * group and then re-enters the fast path. This handles e.g. base64 - * with newlines reasonably well because the majority of a line is in - * the fast path. - */ - for (;;) { - /* Fast path, on each loop handle two 4-char input groups. - * If both are clean, emit 6 bytes and continue. If first - * is clean, emit 3 bytes and drop out; otherwise emit - * nothing and drop out. This approach could be extended to - * more groups per loop, but for inputs with e.g. periodic - * newlines (which are common) it might not be an improvement. - */ - while (DUK_LIKELY(p <= p_end_safe)) { - duk_int_t t1, t2; - - /* The lookup byte is intentionally sign extended to - * (at least) 32 bits and then ORed. This ensures - * that is at least 1 byte is negative, the highest - * bit of the accumulator will be set at the end and - * we don't need to check every byte. - * - * Read all input bytes first before writing output - * bytes to minimize aliasing. - */ - DUK_DDD(DUK_DDDPRINT("fast loop: p=%p, p_end_safe=%p, p_end=%p", - (const void *) p, - (const void *) p_end_safe, - (const void *) p_end)); - - t1 = (duk_int_t) duk__base64_dectab_fast[p[0]]; - t1 = (duk_int_t) ((duk_uint_t) t1 << 6) | (duk_int_t) duk__base64_dectab_fast[p[1]]; - t1 = (duk_int_t) ((duk_uint_t) t1 << 6) | (duk_int_t) duk__base64_dectab_fast[p[2]]; - t1 = (duk_int_t) ((duk_uint_t) t1 << 6) | (duk_int_t) duk__base64_dectab_fast[p[3]]; - - t2 = (duk_int_t) duk__base64_dectab_fast[p[4]]; - t2 = (duk_int_t) ((duk_uint_t) t2 << 6) | (duk_int_t) duk__base64_dectab_fast[p[5]]; - t2 = (duk_int_t) ((duk_uint_t) t2 << 6) | (duk_int_t) duk__base64_dectab_fast[p[6]]; - t2 = (duk_int_t) ((duk_uint_t) t2 << 6) | (duk_int_t) duk__base64_dectab_fast[p[7]]; - - q[0] = (duk_uint8_t) (((duk_uint_t) t1 >> 16) & 0xffU); - q[1] = (duk_uint8_t) (((duk_uint_t) t1 >> 8) & 0xffU); - q[2] = (duk_uint8_t) ((duk_uint_t) t1 & 0xffU); - - q[3] = (duk_uint8_t) (((duk_uint_t) t2 >> 16) & 0xffU); - q[4] = (duk_uint8_t) (((duk_uint_t) t2 >> 8) & 0xffU); - q[5] = (duk_uint8_t) ((duk_uint_t) t2 & 0xffU); - - /* Optimistic check using one branch. */ - if (DUK_LIKELY((t1 | t2) >= 0)) { - p += 8; - q += 6; - } else if (t1 >= 0) { - DUK_DDD( - DUK_DDDPRINT("fast loop first group was clean, second was not, process one slow path group")); - DUK_ASSERT(t2 < 0); - p += 4; - q += 3; - break; - } else { - DUK_DDD(DUK_DDDPRINT( - "fast loop first group was not clean, second does not matter, process one slow path group")); - DUK_ASSERT(t1 < 0); - break; - } - } /* fast path */ - - /* Slow path step 1: try to scan a 4-character encoded group, - * end-of-input, or start-of-padding. We exit with: - * 1. n_chars == 4: full group, no padding, no end-of-input. - * 2. n_chars < 4: partial group (may also be 0), encountered - * padding or end of input. - * - * The accumulator is initialized to 1; this allows us to detect - * a full group by comparing >= 0x1000000 without an extra - * counter variable. - */ - t = 1UL; - for (;;) { - DUK_DDD(DUK_DDDPRINT("slow loop: p=%p, p_end=%p, t=%lu", - (const void *) p, - (const void *) p_end, - (unsigned long) t)); - - if (DUK_LIKELY(p < p_end)) { - x = duk__base64_dectab_fast[*p++]; - if (DUK_LIKELY(x >= 0)) { - DUK_ASSERT(x >= 0 && x <= 63); - t = (t << 6) + (duk_uint_t) x; - if (t >= 0x1000000UL) { - break; - } - } else if (x == -1) { - continue; /* allowed ascii whitespace */ - } else if (x == -2) { - p--; - break; /* start of padding */ - } else { - DUK_ASSERT(x == -3); - goto decode_error; - } - } else { - break; /* end of input */ - } - } /* slow path step 1 */ - - /* Complete the padding by simulating pad characters, - * regardless of actual input padding chars. - */ - n_equal = 0; - while (t < 0x1000000UL) { - t = (t << 6) + 0U; - n_equal++; - } - - /* Slow path step 2: deal with full/partial group, padding, - * etc. Note that for num chars in [0,3] we intentionally emit - * 3 bytes but don't step forward that much, buffer space is - * guaranteed in setup. - * - * num chars: - * 0 #### no output (= step 0) - * 1 #=== reject, 6 bits of data - * 2 ##== 12 bits of data, output 1 byte (= step 1) - * 3 ###= 18 bits of data, output 2 bytes (= step 2) - * 4 #### 24 bits of data, output 3 bytes (= step 3) - */ - q[0] = (duk_uint8_t) ((t >> 16) & 0xffU); - q[1] = (duk_uint8_t) ((t >> 8) & 0xffU); - q[2] = (duk_uint8_t) (t & 0xffU); - - DUK_ASSERT(n_equal <= 4); - step = duk__base64_decode_nequal_step[n_equal]; - if (DUK_UNLIKELY(step < 0)) { - goto decode_error; - } - q += step; - - /* Slow path step 3: read and ignore padding and whitespace - * until (a) next non-padding and non-whitespace character - * after which we resume the fast path, or (b) end of input. - * This allows us to accept missing, partial, full, and extra - * padding cases uniformly. We also support concatenated - * base-64 documents because we resume scanning afterwards. - * - * Note that to support concatenated documents well, the '=' - * padding found inside the input must also allow for 'extra' - * padding. For example, 'Zm===' decodes to 'f' and has one - * extra padding char. So, 'Zm===Zm' should decode 'ff', even - * though the standard break-up would be 'Zm==' + '=Zm' which - * doesn't make sense. - * - * We also accept prepended padding like '==Zm9', because it - * is equivalent to an empty document with extra padding ('==') - * followed by a valid document. - */ - - for (;;) { - if (DUK_UNLIKELY(p >= p_end)) { - goto done; - } - x = duk__base64_dectab_fast[*p++]; - if (x == -1 || x == -2) { - ; /* padding or whitespace, keep eating */ - } else { - p--; - break; /* backtrack and go back to fast path, even for -1 */ - } - } /* slow path step 3 */ - } /* outer fast+slow path loop */ - -done: - DUK_DDD(DUK_DDDPRINT("done; p=%p, p_end=%p", (const void *) p, (const void *) p_end)); - - DUK_ASSERT(p == p_end); - - *out_dst_final = q; - return 1; - -decode_error: - return 0; -} -#else /* DUK_USE_BASE64_FASTPATH */ -DUK_LOCAL duk_bool_t duk__base64_decode_helper(const duk_uint8_t *src, - duk_size_t srclen, - duk_uint8_t *dst, - duk_uint8_t **out_dst_final) { - duk_uint_t t, x; - duk_int_t y; - duk_int8_t step; - const duk_uint8_t *p; - const duk_uint8_t *p_end; - duk_uint8_t *q; - /* 0x09, 0x0a, or 0x0d */ - duk_uint32_t mask_white = (1U << 9) | (1U << 10) | (1U << 13); - - /* 't' tracks progress of the decoded group: - * - * t == 1 no valid chars yet - * t >= 0x40 1x6 = 6 bits shifted in - * t >= 0x1000 2x6 = 12 bits shifted in - * t >= 0x40000 3x6 = 18 bits shifted in - * t >= 0x1000000 4x6 = 24 bits shifted in - * - * By initializing t=1 there's no need for a separate counter for - * the number of characters found so far. - */ - p = src; - p_end = src + srclen; - q = dst; - t = 1UL; - - for (;;) { - duk_small_uint_t n_equal; - - DUK_ASSERT(t >= 1U); - if (p >= p_end) { - /* End of input: if input exists, treat like - * start of padding, finish the block, then - * re-enter here to see we're done. - */ - if (t == 1U) { - break; - } else { - goto simulate_padding; - } - } - - x = *p++; - - if (x >= 0x41U) { - /* Valid: a-z and A-Z. */ - DUK_ASSERT(x >= 0x41U && x <= 0xffU); - if (x >= 0x61U && x <= 0x7aU) { - y = (duk_int_t) x - 0x61 + 26; - } else if (x <= 0x5aU) { - y = (duk_int_t) x - 0x41; - } else { - goto decode_error; - } - } else if (x >= 0x30U) { - /* Valid: 0-9 and =. */ - DUK_ASSERT(x >= 0x30U && x <= 0x40U); - if (x <= 0x39U) { - y = (duk_int_t) x - 0x30 + 52; - } else if (x == 0x3dU) { - /* Skip padding and whitespace unless we're in the - * middle of a block. Otherwise complete group by - * simulating shifting in the correct padding. - */ - if (t == 1U) { - continue; - } - goto simulate_padding; - } else { - goto decode_error; - } - } else if (x >= 0x20U) { - /* Valid: +, /, and 0x20 whitespace. */ - DUK_ASSERT(x >= 0x20U && x <= 0x2fU); - if (x == 0x2bU) { - y = 62; - } else if (x == 0x2fU) { - y = 63; - } else if (x == 0x20U) { - continue; - } else { - goto decode_error; - } - } else { - /* Valid: whitespace. */ - duk_uint32_t m; - DUK_ASSERT(x < 0x20U); /* 0x00 to 0x1f */ - m = (1U << x); - if (mask_white & m) { - /* Allow basic ASCII whitespace. */ - continue; - } else { - goto decode_error; - } - } - - DUK_ASSERT(y >= 0 && y <= 63); - t = (t << 6) + (duk_uint_t) y; - if (t < 0x1000000UL) { - continue; - } - /* fall through; no padding will be added */ - - simulate_padding: - n_equal = 0; - while (t < 0x1000000UL) { - t = (t << 6) + 0U; - n_equal++; - } - - /* Output 3 bytes from 't' and advance as needed. */ - q[0] = (duk_uint8_t) ((t >> 16) & 0xffU); - q[1] = (duk_uint8_t) ((t >> 8) & 0xffU); - q[2] = (duk_uint8_t) (t & 0xffU); - - DUK_ASSERT(n_equal <= 4U); - step = duk__base64_decode_nequal_step[n_equal]; - if (step < 0) { - goto decode_error; - } - q += step; - - /* Re-enter loop. The actual padding characters are skipped - * by the main loop. This handles cases like missing, partial, - * full, and extra padding, and allows parsing of concatenated - * documents (with extra padding) like: Zm===Zm. Also extra - * prepended padding is accepted: ===Zm9v. - */ - t = 1U; - } - DUK_ASSERT(t == 1UL); - - *out_dst_final = q; - return 1; - -decode_error: - return 0; -} -#endif /* DUK_USE_BASE64_FASTPATH */ - -DUK_EXTERNAL const char *duk_base64_encode(duk_hthread *thr, duk_idx_t idx) { - const duk_uint8_t *src; - duk_size_t srclen; - duk_size_t dstlen; - duk_uint8_t *dst; - const char *ret; - - DUK_ASSERT_API_ENTRY(thr); - - idx = duk_require_normalize_index(thr, idx); - src = duk__prep_codec_arg(thr, idx, &srclen); - DUK_ASSERT(src != NULL); - - /* Compute exact output length. Computation must not wrap; this - * limit works for 32-bit size_t: - * >>> srclen = 3221225469 - * >>> '%x' % ((srclen + 2) / 3 * 4) - * 'fffffffc' - */ - if (srclen > 3221225469UL) { - goto type_error; - } - dstlen = (srclen + 2U) / 3U * 4U; - dst = (duk_uint8_t *) duk_push_fixed_buffer_nozero(thr, dstlen); - - duk__base64_encode_helper((const duk_uint8_t *) src, srclen, dst); - - ret = duk_buffer_to_string(thr, -1); /* Safe, result is ASCII. */ - duk_replace(thr, idx); - return ret; - -type_error: - DUK_ERROR_TYPE(thr, DUK_STR_BASE64_ENCODE_FAILED); - DUK_WO_NORETURN(return NULL;); -} - -DUK_EXTERNAL void duk_base64_decode(duk_hthread *thr, duk_idx_t idx) { - const duk_uint8_t *src; - duk_size_t srclen; - duk_size_t dstlen; - duk_uint8_t *dst; - duk_uint8_t *dst_final; - - DUK_ASSERT_API_ENTRY(thr); - - idx = duk_require_normalize_index(thr, idx); - src = duk__prep_codec_arg(thr, idx, &srclen); - DUK_ASSERT(src != NULL); - - /* Round up and add safety margin. Avoid addition before division to - * avoid possibility of wrapping. Margin includes +3 for rounding up, - * and +3 for one extra group: the decoder may emit and then backtrack - * a full group (3 bytes) from zero-sized input for technical reasons. - * Similarly, 'xx' may ecause 1+3 = bytes to be emitted and then - * backtracked. - */ - dstlen = (srclen / 4) * 3 + 6; /* upper limit, assuming no whitespace etc */ - dst = (duk_uint8_t *) duk_push_dynamic_buffer(thr, dstlen); - /* Note: for dstlen=0, dst may be NULL */ - - if (!duk__base64_decode_helper((const duk_uint8_t *) src, srclen, dst, &dst_final)) { - goto type_error; - } - - /* XXX: convert to fixed buffer? */ - (void) duk_resize_buffer(thr, -1, (duk_size_t) (dst_final - dst)); - duk_replace(thr, idx); - return; - -type_error: - DUK_ERROR_TYPE(thr, DUK_STR_BASE64_DECODE_FAILED); - DUK_WO_NORETURN(return;); -} -#else /* DUK_USE_BASE64_SUPPORT */ -DUK_EXTERNAL const char *duk_base64_encode(duk_hthread *thr, duk_idx_t idx) { - DUK_UNREF(idx); - DUK_ERROR_UNSUPPORTED(thr); - DUK_WO_NORETURN(return NULL;); -} - -DUK_EXTERNAL void duk_base64_decode(duk_hthread *thr, duk_idx_t idx) { - DUK_UNREF(idx); - DUK_ERROR_UNSUPPORTED(thr); - DUK_WO_NORETURN(return;); -} -#endif /* DUK_USE_BASE64_SUPPORT */ - -/* - * Hex - */ - -#if defined(DUK_USE_HEX_SUPPORT) -DUK_EXTERNAL const char *duk_hex_encode(duk_hthread *thr, duk_idx_t idx) { - const duk_uint8_t *inp; - duk_size_t len; - duk_size_t i; - duk_uint8_t *buf; - const char *ret; -#if defined(DUK_USE_HEX_FASTPATH) - duk_size_t len_safe; - duk_uint16_t *p16; -#endif - - DUK_ASSERT_API_ENTRY(thr); - - idx = duk_require_normalize_index(thr, idx); - inp = duk__prep_codec_arg(thr, idx, &len); - DUK_ASSERT(inp != NULL); - - /* Fixed buffer, no zeroing because we'll fill all the data. */ - buf = (duk_uint8_t *) duk_push_fixed_buffer_nozero(thr, len * 2); - DUK_ASSERT(buf != NULL); - -#if defined(DUK_USE_HEX_FASTPATH) - DUK_ASSERT((((duk_size_t) buf) & 0x01U) == 0); /* pointer is aligned, guaranteed for fixed buffer */ - p16 = (duk_uint16_t *) (void *) buf; - len_safe = len & ~0x03U; - for (i = 0; i < len_safe; i += 4) { - p16[0] = duk_hex_enctab[inp[i]]; - p16[1] = duk_hex_enctab[inp[i + 1]]; - p16[2] = duk_hex_enctab[inp[i + 2]]; - p16[3] = duk_hex_enctab[inp[i + 3]]; - p16 += 4; - } - for (; i < len; i++) { - *p16++ = duk_hex_enctab[inp[i]]; - } -#else /* DUK_USE_HEX_FASTPATH */ - for (i = 0; i < len; i++) { - duk_small_uint_t t; - t = (duk_small_uint_t) inp[i]; - buf[i * 2 + 0] = duk_lc_digits[t >> 4]; - buf[i * 2 + 1] = duk_lc_digits[t & 0x0f]; - } -#endif /* DUK_USE_HEX_FASTPATH */ - - /* XXX: Using a string return value forces a string intern which is - * not always necessary. As a rough performance measure, hex encode - * time for tests/perf/test-hex-encode.js dropped from ~35s to ~15s - * without string coercion. Change to returning a buffer and let the - * caller coerce to string if necessary? - */ - - ret = duk_buffer_to_string(thr, -1); /* Safe, result is ASCII. */ - duk_replace(thr, idx); - return ret; -} - -DUK_EXTERNAL void duk_hex_decode(duk_hthread *thr, duk_idx_t idx) { - const duk_uint8_t *inp; - duk_size_t len; - duk_size_t i; - duk_int_t t; - duk_uint8_t *buf; -#if defined(DUK_USE_HEX_FASTPATH) - duk_int_t chk; - duk_uint8_t *p; - duk_size_t len_safe; -#endif - - DUK_ASSERT_API_ENTRY(thr); - - idx = duk_require_normalize_index(thr, idx); - inp = duk__prep_codec_arg(thr, idx, &len); - DUK_ASSERT(inp != NULL); - - if (len & 0x01) { - goto type_error; - } - - /* Fixed buffer, no zeroing because we'll fill all the data. */ - buf = (duk_uint8_t *) duk_push_fixed_buffer_nozero(thr, len / 2); - DUK_ASSERT(buf != NULL); - -#if defined(DUK_USE_HEX_FASTPATH) - p = buf; - len_safe = len & ~0x07U; - for (i = 0; i < len_safe; i += 8) { - t = ((duk_int_t) duk_hex_dectab_shift4[inp[i]]) | ((duk_int_t) duk_hex_dectab[inp[i + 1]]); - chk = t; - p[0] = (duk_uint8_t) t; - t = ((duk_int_t) duk_hex_dectab_shift4[inp[i + 2]]) | ((duk_int_t) duk_hex_dectab[inp[i + 3]]); - chk |= t; - p[1] = (duk_uint8_t) t; - t = ((duk_int_t) duk_hex_dectab_shift4[inp[i + 4]]) | ((duk_int_t) duk_hex_dectab[inp[i + 5]]); - chk |= t; - p[2] = (duk_uint8_t) t; - t = ((duk_int_t) duk_hex_dectab_shift4[inp[i + 6]]) | ((duk_int_t) duk_hex_dectab[inp[i + 7]]); - chk |= t; - p[3] = (duk_uint8_t) t; - p += 4; - - /* Check if any lookup above had a negative result. */ - if (DUK_UNLIKELY(chk < 0)) { - goto type_error; - } - } - for (; i < len; i += 2) { - /* First cast to duk_int_t to sign extend, second cast to - * duk_uint_t to avoid signed left shift, and final cast to - * duk_int_t result type. - */ - t = (duk_int_t) ((((duk_uint_t) (duk_int_t) duk_hex_dectab[inp[i]]) << 4U) | - ((duk_uint_t) (duk_int_t) duk_hex_dectab[inp[i + 1]])); - if (DUK_UNLIKELY(t < 0)) { - goto type_error; - } - *p++ = (duk_uint8_t) t; - } -#else /* DUK_USE_HEX_FASTPATH */ - for (i = 0; i < len; i += 2) { - /* For invalid characters the value -1 gets extended to - * at least 16 bits. If either nybble is invalid, the - * resulting 't' will be < 0. - */ - t = (duk_int_t) ((((duk_uint_t) (duk_int_t) duk_hex_dectab[inp[i]]) << 4U) | - ((duk_uint_t) (duk_int_t) duk_hex_dectab[inp[i + 1]])); - if (DUK_UNLIKELY(t < 0)) { - goto type_error; - } - buf[i >> 1] = (duk_uint8_t) t; - } -#endif /* DUK_USE_HEX_FASTPATH */ - - duk_replace(thr, idx); - return; - -type_error: - DUK_ERROR_TYPE(thr, DUK_STR_HEX_DECODE_FAILED); - DUK_WO_NORETURN(return;); -} -#else /* DUK_USE_HEX_SUPPORT */ -DUK_EXTERNAL const char *duk_hex_encode(duk_hthread *thr, duk_idx_t idx) { - DUK_UNREF(idx); - DUK_ERROR_UNSUPPORTED(thr); - DUK_WO_NORETURN(return NULL;); -} -DUK_EXTERNAL void duk_hex_decode(duk_hthread *thr, duk_idx_t idx) { - DUK_UNREF(idx); - DUK_ERROR_UNSUPPORTED(thr); - DUK_WO_NORETURN(return;); -} -#endif /* DUK_USE_HEX_SUPPORT */ - -/* - * JSON - */ - -#if defined(DUK_USE_JSON_SUPPORT) -DUK_EXTERNAL const char *duk_json_encode(duk_hthread *thr, duk_idx_t idx) { -#if defined(DUK_USE_ASSERTIONS) - duk_idx_t top_at_entry; -#endif - const char *ret; - - DUK_ASSERT_API_ENTRY(thr); -#if defined(DUK_USE_ASSERTIONS) - top_at_entry = duk_get_top(thr); -#endif - - idx = duk_require_normalize_index(thr, idx); - duk_bi_json_stringify_helper(thr, - idx /*idx_value*/, - DUK_INVALID_INDEX /*idx_replacer*/, - DUK_INVALID_INDEX /*idx_space*/, - 0 /*flags*/); - DUK_ASSERT(duk_is_string(thr, -1)); - duk_replace(thr, idx); - ret = duk_get_string(thr, idx); - - DUK_ASSERT(duk_get_top(thr) == top_at_entry); - - return ret; -} - -DUK_EXTERNAL void duk_json_decode(duk_hthread *thr, duk_idx_t idx) { -#if defined(DUK_USE_ASSERTIONS) - duk_idx_t top_at_entry; -#endif - - DUK_ASSERT_API_ENTRY(thr); -#if defined(DUK_USE_ASSERTIONS) - top_at_entry = duk_get_top(thr); -#endif - - idx = duk_require_normalize_index(thr, idx); - duk_bi_json_parse_helper(thr, idx /*idx_value*/, DUK_INVALID_INDEX /*idx_reviver*/, 0 /*flags*/); - duk_replace(thr, idx); - - DUK_ASSERT(duk_get_top(thr) == top_at_entry); -} -#else /* DUK_USE_JSON_SUPPORT */ -DUK_EXTERNAL const char *duk_json_encode(duk_hthread *thr, duk_idx_t idx) { - DUK_ASSERT_API_ENTRY(thr); - DUK_UNREF(idx); - DUK_ERROR_UNSUPPORTED(thr); - DUK_WO_NORETURN(return NULL;); -} - -DUK_EXTERNAL void duk_json_decode(duk_hthread *thr, duk_idx_t idx) { - DUK_ASSERT_API_ENTRY(thr); - DUK_UNREF(idx); - DUK_ERROR_UNSUPPORTED(thr); - DUK_WO_NORETURN(return;); -} -#endif /* DUK_USE_JSON_SUPPORT */ -#line 1 "duk_api_compile.c" -/* - * Compilation and evaluation - */ - -/* #include duk_internal.h -> already included */ - -typedef struct duk__compile_raw_args duk__compile_raw_args; -struct duk__compile_raw_args { - duk_size_t src_length; /* should be first on 64-bit platforms */ - const duk_uint8_t *src_buffer; - duk_uint_t flags; -}; - -/* Eval is just a wrapper now. */ -DUK_EXTERNAL duk_int_t duk_eval_raw(duk_hthread *thr, const char *src_buffer, duk_size_t src_length, duk_uint_t flags) { - duk_int_t rc; - - DUK_ASSERT_API_ENTRY(thr); - - /* Note: strictness is *not* inherited from the current Duktape/C. - * This would be confusing because the current strictness state - * depends on whether we're running inside a Duktape/C activation - * (= strict mode) or outside of any activation (= non-strict mode). - * See tests/api/test-eval-strictness.c for more discussion. - */ - - /* [ ... source? filename? ] (depends on flags) */ - - rc = duk_compile_raw(thr, - src_buffer, - src_length, - flags | DUK_COMPILE_EVAL); /* may be safe, or non-safe depending on flags */ - - /* [ ... closure/error ] */ - - if (rc != DUK_EXEC_SUCCESS) { - rc = DUK_EXEC_ERROR; - goto got_rc; - } - - duk_push_global_object(thr); /* explicit 'this' binding, see GH-164 */ - - if (flags & DUK_COMPILE_SAFE) { - rc = duk_pcall_method(thr, 0); - } else { - duk_call_method(thr, 0); - rc = DUK_EXEC_SUCCESS; - } - - /* [ ... result/error ] */ - -got_rc: - if (flags & DUK_COMPILE_NORESULT) { - duk_pop(thr); - } - - return rc; -} - -/* Helper which can be called both directly and with duk_safe_call(). */ -DUK_LOCAL duk_ret_t duk__do_compile(duk_hthread *thr, void *udata) { - duk__compile_raw_args *comp_args; - duk_uint_t flags; - duk_hcompfunc *h_templ; - - DUK_CTX_ASSERT_VALID(thr); - DUK_ASSERT(udata != NULL); - - /* Note: strictness is not inherited from the current Duktape/C - * context. Otherwise it would not be possible to compile - * non-strict code inside a Duktape/C activation (which is - * always strict now). See tests/api/test-eval-strictness.c - * for discussion. - */ - - /* [ ... source? filename? ] (depends on flags) */ - - comp_args = (duk__compile_raw_args *) udata; - flags = comp_args->flags; - - if (flags & DUK_COMPILE_NOFILENAME) { - /* Automatic filename: 'eval' or 'input'. */ - duk_push_hstring_stridx(thr, (flags & DUK_COMPILE_EVAL) ? DUK_STRIDX_EVAL : DUK_STRIDX_INPUT); - } - - /* [ ... source? filename ] */ - - if (!comp_args->src_buffer) { - duk_hstring *h_sourcecode; - - h_sourcecode = duk_get_hstring(thr, -2); - if ((flags & DUK_COMPILE_NOSOURCE) || /* args incorrect */ - (h_sourcecode == NULL)) { /* e.g. duk_push_string_file_raw() pushed undefined */ - DUK_ERROR_TYPE(thr, DUK_STR_NO_SOURCECODE); - DUK_WO_NORETURN(return 0;); - } - DUK_ASSERT(h_sourcecode != NULL); - comp_args->src_buffer = (const duk_uint8_t *) DUK_HSTRING_GET_DATA(h_sourcecode); - comp_args->src_length = (duk_size_t) DUK_HSTRING_GET_BYTELEN(h_sourcecode); - } - DUK_ASSERT(comp_args->src_buffer != NULL); - - if (flags & DUK_COMPILE_FUNCTION) { - flags |= DUK_COMPILE_EVAL | DUK_COMPILE_FUNCEXPR; - } - - /* [ ... source? filename ] */ - - duk_js_compile(thr, comp_args->src_buffer, comp_args->src_length, flags); - - /* [ ... source? func_template ] */ - - if (flags & DUK_COMPILE_NOSOURCE) { - ; - } else { - duk_remove_m2(thr); - } - - /* [ ... func_template ] */ - - h_templ = (duk_hcompfunc *) duk_known_hobject(thr, -1); - duk_js_push_closure(thr, - h_templ, - thr->builtins[DUK_BIDX_GLOBAL_ENV], - thr->builtins[DUK_BIDX_GLOBAL_ENV], - 1 /*add_auto_proto*/); - duk_remove_m2(thr); /* -> [ ... closure ] */ - - /* [ ... closure ] */ - - return 1; -} - -DUK_EXTERNAL duk_int_t duk_compile_raw(duk_hthread *thr, const char *src_buffer, duk_size_t src_length, duk_uint_t flags) { - duk__compile_raw_args comp_args_alloc; - duk__compile_raw_args *comp_args = &comp_args_alloc; - - DUK_ASSERT_API_ENTRY(thr); - - if ((flags & DUK_COMPILE_STRLEN) && (src_buffer != NULL)) { - /* String length is computed here to avoid multiple evaluation - * of a macro argument in the calling side. - */ - src_length = DUK_STRLEN(src_buffer); - } - - comp_args->src_buffer = (const duk_uint8_t *) src_buffer; - comp_args->src_length = src_length; - comp_args->flags = flags; - - /* [ ... source? filename? ] (depends on flags) */ - - if (flags & DUK_COMPILE_SAFE) { - duk_int_t rc; - duk_int_t nargs; - duk_int_t nrets = 1; - - /* Arguments can be: [ source? filename? &comp_args] so that - * nargs is 1 to 3. Call site encodes the correct nargs count - * directly into flags. - */ - nargs = flags & 0x07; - DUK_ASSERT(nargs == ((flags & DUK_COMPILE_NOSOURCE) ? 0 : 1) + ((flags & DUK_COMPILE_NOFILENAME) ? 0 : 1)); - rc = duk_safe_call(thr, duk__do_compile, (void *) comp_args, nargs, nrets); - - /* [ ... closure ] */ - return rc; - } - - (void) duk__do_compile(thr, (void *) comp_args); - - /* [ ... closure ] */ - return DUK_EXEC_SUCCESS; -} -#line 1 "duk_api_debug.c" -/* - * Debugging related API calls - */ - -/* #include duk_internal.h -> already included */ - -#if defined(DUK_USE_JSON_SUPPORT) -DUK_EXTERNAL void duk_push_context_dump(duk_hthread *thr) { - duk_idx_t idx; - duk_idx_t top; - - DUK_ASSERT_API_ENTRY(thr); - - /* We don't duk_require_stack() here now, but rely on the caller having - * enough space. - */ - - top = duk_get_top(thr); - duk_push_bare_array(thr); - for (idx = 0; idx < top; idx++) { - duk_dup(thr, idx); - duk_put_prop_index(thr, -2, (duk_uarridx_t) idx); - } - - /* XXX: conversion errors should not propagate outwards. - * Perhaps values need to be coerced individually? - */ - duk_bi_json_stringify_helper(thr, - duk_get_top_index(thr), /*idx_value*/ - DUK_INVALID_INDEX, /*idx_replacer*/ - DUK_INVALID_INDEX, /*idx_space*/ - DUK_JSON_FLAG_EXT_CUSTOM | DUK_JSON_FLAG_ASCII_ONLY | - DUK_JSON_FLAG_AVOID_KEY_QUOTES /*flags*/); - - duk_push_sprintf(thr, "ctx: top=%ld, stack=%s", (long) top, (const char *) duk_safe_to_string(thr, -1)); - duk_replace(thr, -3); /* [ ... arr jsonx(arr) res ] -> [ ... res jsonx(arr) ] */ - duk_pop(thr); - DUK_ASSERT(duk_is_string(thr, -1)); -} -#else /* DUK_USE_JSON_SUPPORT */ -DUK_EXTERNAL void duk_push_context_dump(duk_hthread *thr) { - DUK_ASSERT_API_ENTRY(thr); - DUK_ERROR_UNSUPPORTED(thr); - DUK_WO_NORETURN(return;); -} -#endif /* DUK_USE_JSON_SUPPORT */ - -#if defined(DUK_USE_DEBUGGER_SUPPORT) - -DUK_EXTERNAL void duk_debugger_attach(duk_hthread *thr, - duk_debug_read_function read_cb, - duk_debug_write_function write_cb, - duk_debug_peek_function peek_cb, - duk_debug_read_flush_function read_flush_cb, - duk_debug_write_flush_function write_flush_cb, - duk_debug_request_function request_cb, - duk_debug_detached_function detached_cb, - void *udata) { - duk_heap *heap; - const char *str; - duk_size_t len; - - /* XXX: should there be an error or an automatic detach if - * already attached? - */ - - DUK_D(DUK_DPRINT("application called duk_debugger_attach()")); - - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT(read_cb != NULL); - DUK_ASSERT(write_cb != NULL); - /* Other callbacks are optional. */ - - heap = thr->heap; - heap->dbg_read_cb = read_cb; - heap->dbg_write_cb = write_cb; - heap->dbg_peek_cb = peek_cb; - heap->dbg_read_flush_cb = read_flush_cb; - heap->dbg_write_flush_cb = write_flush_cb; - heap->dbg_request_cb = request_cb; - heap->dbg_detached_cb = detached_cb; - heap->dbg_udata = udata; - heap->dbg_have_next_byte = 0; - - /* Start in paused state. */ - heap->dbg_processing = 0; - heap->dbg_state_dirty = 0; - heap->dbg_force_restart = 0; - heap->dbg_pause_flags = 0; - heap->dbg_pause_act = NULL; - heap->dbg_pause_startline = 0; - heap->dbg_exec_counter = 0; - heap->dbg_last_counter = 0; - heap->dbg_last_time = 0.0; - duk_debug_set_paused(heap); /* XXX: overlap with fields above */ - - /* Send version identification and flush right afterwards. Note that - * we must write raw, unframed bytes here. - */ - duk_push_sprintf(thr, - "%ld %ld %s %s\n", - (long) DUK_DEBUG_PROTOCOL_VERSION, - (long) DUK_VERSION, - (const char *) DUK_GIT_DESCRIBE, - (const char *) DUK_USE_TARGET_INFO); - str = duk_get_lstring(thr, -1, &len); - DUK_ASSERT(str != NULL); - duk_debug_write_bytes(thr, (const duk_uint8_t *) str, len); - duk_debug_write_flush(thr); - duk_pop(thr); -} - -DUK_EXTERNAL void duk_debugger_detach(duk_hthread *thr) { - DUK_D(DUK_DPRINT("application called duk_debugger_detach()")); - - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT(thr->heap != NULL); - - /* Can be called multiple times with no harm. */ - duk_debug_do_detach(thr->heap); -} - -DUK_EXTERNAL void duk_debugger_cooperate(duk_hthread *thr) { - duk_bool_t processed_messages; - - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT(thr->heap != NULL); - - if (!duk_debug_is_attached(thr->heap)) { - return; - } - if (thr->callstack_curr != NULL || thr->heap->dbg_processing) { - /* Calling duk_debugger_cooperate() while Duktape is being - * called into is not supported. This is not a 100% check - * but prevents any damage in most cases. - */ - return; - } - - processed_messages = duk_debug_process_messages(thr, 1 /*no_block*/); - DUK_UNREF(processed_messages); -} - -DUK_EXTERNAL duk_bool_t duk_debugger_notify(duk_hthread *thr, duk_idx_t nvalues) { - duk_idx_t top; - duk_idx_t idx; - duk_bool_t ret = 0; - - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT(thr->heap != NULL); - - DUK_D(DUK_DPRINT("application called duk_debugger_notify() with nvalues=%ld", (long) nvalues)); - - top = duk_get_top(thr); - if (top < nvalues) { - DUK_ERROR_RANGE(thr, "not enough stack values for notify"); - DUK_WO_NORETURN(return 0;); - } - if (duk_debug_is_attached(thr->heap)) { - duk_debug_write_notify(thr, DUK_DBG_CMD_APPNOTIFY); - for (idx = top - nvalues; idx < top; idx++) { - duk_tval *tv = DUK_GET_TVAL_POSIDX(thr, idx); - duk_debug_write_tval(thr, tv); - } - duk_debug_write_eom(thr); - - /* Return non-zero (true) if we have a good reason to believe - * the notify was delivered; if we're still attached at least - * a transport error was not indicated by the transport write - * callback. This is not a 100% guarantee of course. - */ - if (duk_debug_is_attached(thr->heap)) { - ret = 1; - } - } - duk_pop_n(thr, nvalues); - return ret; -} - -DUK_EXTERNAL void duk_debugger_pause(duk_hthread *thr) { - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT(thr->heap != NULL); - - DUK_D(DUK_DPRINT("application called duk_debugger_pause()")); - - /* Treat like a debugger statement: ignore when not attached. */ - if (duk_debug_is_attached(thr->heap)) { - if (duk_debug_is_paused(thr->heap)) { - DUK_D(DUK_DPRINT("duk_debugger_pause() called when already paused; ignoring")); - } else { - duk_debug_set_paused(thr->heap); - - /* Pause on the next opcode executed. This is always safe to do even - * inside the debugger message loop: the interrupt counter will be reset - * to its proper value when the message loop exits. - */ - thr->interrupt_init = 1; - thr->interrupt_counter = 0; - } - } -} - -#else /* DUK_USE_DEBUGGER_SUPPORT */ - -DUK_EXTERNAL void duk_debugger_attach(duk_hthread *thr, - duk_debug_read_function read_cb, - duk_debug_write_function write_cb, - duk_debug_peek_function peek_cb, - duk_debug_read_flush_function read_flush_cb, - duk_debug_write_flush_function write_flush_cb, - duk_debug_request_function request_cb, - duk_debug_detached_function detached_cb, - void *udata) { - DUK_ASSERT_API_ENTRY(thr); - DUK_UNREF(read_cb); - DUK_UNREF(write_cb); - DUK_UNREF(peek_cb); - DUK_UNREF(read_flush_cb); - DUK_UNREF(write_flush_cb); - DUK_UNREF(request_cb); - DUK_UNREF(detached_cb); - DUK_UNREF(udata); - DUK_ERROR_TYPE(thr, "no debugger support"); - DUK_WO_NORETURN(return;); -} - -DUK_EXTERNAL void duk_debugger_detach(duk_hthread *thr) { - DUK_ASSERT_API_ENTRY(thr); - DUK_ERROR_TYPE(thr, "no debugger support"); - DUK_WO_NORETURN(return;); -} - -DUK_EXTERNAL void duk_debugger_cooperate(duk_hthread *thr) { - /* nop */ - DUK_ASSERT_API_ENTRY(thr); - DUK_UNREF(thr); -} - -DUK_EXTERNAL duk_bool_t duk_debugger_notify(duk_hthread *thr, duk_idx_t nvalues) { - duk_idx_t top; - - DUK_ASSERT_API_ENTRY(thr); - - top = duk_get_top(thr); - if (top < nvalues) { - DUK_ERROR_RANGE_INVALID_COUNT(thr); - DUK_WO_NORETURN(return 0;); - } - - /* No debugger support, just pop values. */ - duk_pop_n(thr, nvalues); - return 0; -} - -DUK_EXTERNAL void duk_debugger_pause(duk_hthread *thr) { - /* Treat like debugger statement: nop */ - DUK_ASSERT_API_ENTRY(thr); - DUK_UNREF(thr); -} - -#endif /* DUK_USE_DEBUGGER_SUPPORT */ -#line 1 "duk_api_heap.c" -/* - * Heap creation and destruction - */ - -/* #include duk_internal.h -> already included */ - -typedef struct duk_internal_thread_state duk_internal_thread_state; - -struct duk_internal_thread_state { - duk_ljstate lj; - duk_bool_t creating_error; - duk_hthread *curr_thread; - duk_uint8_t thread_state; - duk_int_t call_recursion_depth; -}; - -DUK_EXTERNAL duk_hthread *duk_create_heap(duk_alloc_function alloc_func, - duk_realloc_function realloc_func, - duk_free_function free_func, - void *heap_udata, - duk_fatal_function fatal_handler) { - duk_heap *heap = NULL; - duk_hthread *thr; - - /* Assume that either all memory funcs are NULL or non-NULL, mixed - * cases will now be unsafe. - */ - - /* XXX: just assert non-NULL values here and make caller arguments - * do the defaulting to the default implementations (smaller code)? - */ - - if (!alloc_func) { - DUK_ASSERT(realloc_func == NULL); - DUK_ASSERT(free_func == NULL); -#if defined(DUK_USE_PROVIDE_DEFAULT_ALLOC_FUNCTIONS) - alloc_func = duk_default_alloc_function; - realloc_func = duk_default_realloc_function; - free_func = duk_default_free_function; -#else - DUK_D(DUK_DPRINT("no allocation functions given and no default providers")); - return NULL; -#endif - } else { - DUK_ASSERT(realloc_func != NULL); - DUK_ASSERT(free_func != NULL); - } - - if (!fatal_handler) { - fatal_handler = duk_default_fatal_handler; - } - - DUK_ASSERT(alloc_func != NULL); - DUK_ASSERT(realloc_func != NULL); - DUK_ASSERT(free_func != NULL); - DUK_ASSERT(fatal_handler != NULL); - - heap = duk_heap_alloc(alloc_func, realloc_func, free_func, heap_udata, fatal_handler); - if (!heap) { - return NULL; - } - thr = heap->heap_thread; - DUK_ASSERT(thr != NULL); - DUK_ASSERT(thr->heap != NULL); - return thr; -} - -DUK_EXTERNAL void duk_destroy_heap(duk_hthread *thr) { - duk_heap *heap; - - if (!thr) { - return; - } - DUK_ASSERT_API_ENTRY(thr); - heap = thr->heap; - DUK_ASSERT(heap != NULL); - - duk_heap_free(heap); -} - -DUK_EXTERNAL void duk_suspend(duk_hthread *thr, duk_thread_state *state) { - duk_internal_thread_state *snapshot = (duk_internal_thread_state *) (void *) state; - duk_heap *heap; - duk_ljstate *lj; - - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT(thr->heap != NULL); - DUK_ASSERT(state != NULL); /* unvalidated */ - - /* Currently not supported when called from within a finalizer. - * If that is done, the finalizer will remain running indefinitely, - * preventing other finalizers from executing. The assert is a bit - * wider, checking that it would be OK to run pending finalizers. - */ - DUK_ASSERT(thr->heap->pf_prevent_count == 0); - - /* Currently not supported to duk_suspend() from an errCreate() - * call. - */ - DUK_ASSERT(thr->heap->creating_error == 0); - - heap = thr->heap; - lj = &heap->lj; - - duk_push_tval(thr, &lj->value1); - duk_push_tval(thr, &lj->value2); - - /* XXX: creating_error == 0 is asserted above, so no need to store. */ - duk_memcpy((void *) &snapshot->lj, (const void *) lj, sizeof(duk_ljstate)); - snapshot->creating_error = heap->creating_error; - snapshot->curr_thread = heap->curr_thread; - snapshot->thread_state = thr->state; - snapshot->call_recursion_depth = heap->call_recursion_depth; - - lj->jmpbuf_ptr = NULL; - lj->type = DUK_LJ_TYPE_UNKNOWN; - DUK_TVAL_SET_UNDEFINED(&lj->value1); - DUK_TVAL_SET_UNDEFINED(&lj->value2); - heap->creating_error = 0; - heap->curr_thread = NULL; - heap->call_recursion_depth = 0; - - thr->state = DUK_HTHREAD_STATE_INACTIVE; -} - -DUK_EXTERNAL void duk_resume(duk_hthread *thr, const duk_thread_state *state) { - const duk_internal_thread_state *snapshot = (const duk_internal_thread_state *) (const void *) state; - duk_heap *heap; - - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT(thr->heap != NULL); - DUK_ASSERT(state != NULL); /* unvalidated */ - - /* Shouldn't be necessary if duk_suspend() is called before - * duk_resume(), but assert in case API sequence is incorrect. - */ - DUK_ASSERT(thr->heap->pf_prevent_count == 0); - DUK_ASSERT(thr->heap->creating_error == 0); - - thr->state = snapshot->thread_state; - - heap = thr->heap; - - duk_memcpy((void *) &heap->lj, (const void *) &snapshot->lj, sizeof(duk_ljstate)); - heap->creating_error = snapshot->creating_error; - heap->curr_thread = snapshot->curr_thread; - heap->call_recursion_depth = snapshot->call_recursion_depth; - - duk_pop_2(thr); -} - -/* XXX: better place for this */ -DUK_EXTERNAL void duk_set_global_object(duk_hthread *thr) { - duk_hobject *h_glob; - duk_hobject *h_prev_glob; - duk_hobjenv *h_env; - duk_hobject *h_prev_env; - - DUK_ASSERT_API_ENTRY(thr); - - DUK_D(DUK_DPRINT("replace global object with: %!T", duk_get_tval(thr, -1))); - - h_glob = duk_require_hobject(thr, -1); - DUK_ASSERT(h_glob != NULL); - - /* - * Replace global object. - */ - - h_prev_glob = thr->builtins[DUK_BIDX_GLOBAL]; - DUK_UNREF(h_prev_glob); - thr->builtins[DUK_BIDX_GLOBAL] = h_glob; - DUK_HOBJECT_INCREF(thr, h_glob); - DUK_HOBJECT_DECREF_ALLOWNULL(thr, h_prev_glob); /* side effects, in theory (referenced by global env) */ - - /* - * Replace lexical environment for global scope - * - * Create a new object environment for the global lexical scope. - * We can't just reset the _Target property of the current one, - * because the lexical scope is shared by other threads with the - * same (initial) built-ins. - */ - - h_env = duk_hobjenv_alloc(thr, DUK_HOBJECT_FLAG_EXTENSIBLE | DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_OBJENV)); - DUK_ASSERT(h_env != NULL); - DUK_ASSERT(DUK_HOBJECT_GET_PROTOTYPE(thr->heap, (duk_hobject *) h_env) == NULL); - - DUK_ASSERT(h_env->target == NULL); - DUK_ASSERT(h_glob != NULL); - h_env->target = h_glob; - DUK_HOBJECT_INCREF(thr, h_glob); - DUK_ASSERT(h_env->has_this == 0); - - /* [ ... new_glob ] */ - - h_prev_env = thr->builtins[DUK_BIDX_GLOBAL_ENV]; - thr->builtins[DUK_BIDX_GLOBAL_ENV] = (duk_hobject *) h_env; - DUK_HOBJECT_INCREF(thr, (duk_hobject *) h_env); - DUK_HOBJECT_DECREF_ALLOWNULL(thr, h_prev_env); /* side effects */ - DUK_UNREF(h_env); /* without refcounts */ - DUK_UNREF(h_prev_env); - - /* [ ... new_glob ] */ - - duk_pop(thr); - - /* [ ... ] */ -} -#line 1 "duk_api_inspect.c" -/* - * Inspection - */ - -/* #include duk_internal.h -> already included */ - -/* For footprint efficient multiple value setting: arrays are much better than - * varargs, format string with parsing is often better than string pointer arrays. - */ -DUK_LOCAL void duk__inspect_multiple_uint(duk_hthread *thr, const char *fmt, duk_int_t *vals) { - duk_int_t val; - const char *p; - const char *p_curr; - duk_size_t len; - - for (p = fmt;;) { - len = DUK_STRLEN(p); - p_curr = p; - p += len + 1; - if (len == 0) { - /* Double NUL (= empty key) terminates. */ - break; - } - val = *vals++; - if (val >= 0) { - /* Negative values are markers to skip key. */ - duk_push_string(thr, p_curr); - duk_push_int(thr, val); - duk_put_prop(thr, -3); - } - } -} - -/* Raw helper to extract internal information / statistics about a value. - * The return value is an object with properties that are version specific. - * The properties must not expose anything that would lead to security - * issues (e.g. exposing compiled function 'data' buffer might be an issue). - * Currently only counts and sizes and such are given so there shouldn't - * be security implications. - */ - -#define DUK__IDX_TYPE 0 -#define DUK__IDX_ITAG 1 -#define DUK__IDX_REFC 2 -#define DUK__IDX_HBYTES 3 -#define DUK__IDX_CLASS 4 -#define DUK__IDX_PBYTES 5 -#define DUK__IDX_ESIZE 6 -#define DUK__IDX_ENEXT 7 -#define DUK__IDX_ASIZE 8 -#define DUK__IDX_HSIZE 9 -#define DUK__IDX_BCBYTES 10 -#define DUK__IDX_DBYTES 11 -#define DUK__IDX_TSTATE 12 -#define DUK__IDX_VARIANT 13 - -DUK_EXTERNAL void duk_inspect_value(duk_hthread *thr, duk_idx_t idx) { - duk_tval *tv; - duk_heaphdr *h; - /* The temporary values should be in an array rather than individual - * variables which (in practice) ensures that the compiler won't map - * them to registers and emit a lot of unnecessary shuffling code. - */ - duk_int_t vals[14]; - - DUK_ASSERT_API_ENTRY(thr); - - /* Assume two's complement and set everything to -1. */ - duk_memset((void *) &vals, (int) 0xff, sizeof(vals)); - DUK_ASSERT(vals[DUK__IDX_TYPE] == -1); /* spot check one */ - - tv = duk_get_tval_or_unused(thr, idx); - h = (DUK_TVAL_IS_HEAP_ALLOCATED(tv) ? DUK_TVAL_GET_HEAPHDR(tv) : NULL); - - vals[DUK__IDX_TYPE] = duk_get_type_tval(tv); - vals[DUK__IDX_ITAG] = (duk_int_t) DUK_TVAL_GET_TAG(tv); - - duk_push_bare_object(thr); /* Invalidates 'tv'. */ - tv = NULL; - - if (h == NULL) { - goto finish; - } - duk_push_pointer(thr, (void *) h); - duk_put_prop_literal(thr, -2, "hptr"); - -#if 0 - /* Covers a lot of information, e.g. buffer and string variants. */ - duk_push_uint(thr, (duk_uint_t) DUK_HEAPHDR_GET_FLAGS(h)); - duk_put_prop_literal(thr, -2, "hflags"); -#endif - -#if defined(DUK_USE_REFERENCE_COUNTING) - vals[DUK__IDX_REFC] = (duk_int_t) DUK_HEAPHDR_GET_REFCOUNT(h); -#endif - vals[DUK__IDX_VARIANT] = 0; - - /* Heaphdr size and additional allocation size, followed by - * type specific stuff (with varying value count). - */ - switch ((duk_small_int_t) DUK_HEAPHDR_GET_TYPE(h)) { - case DUK_HTYPE_STRING: { - duk_hstring *h_str = (duk_hstring *) h; - vals[DUK__IDX_HBYTES] = (duk_int_t) (sizeof(duk_hstring) + DUK_HSTRING_GET_BYTELEN(h_str) + 1); -#if defined(DUK_USE_HSTRING_EXTDATA) - if (DUK_HSTRING_HAS_EXTDATA(h_str)) { - vals[DUK__IDX_VARIANT] = 1; - } -#endif - break; - } - case DUK_HTYPE_OBJECT: { - duk_hobject *h_obj = (duk_hobject *) h; - - /* XXX: variants here are maybe pointless; class is enough? */ - if (DUK_HOBJECT_IS_ARRAY(h_obj)) { - vals[DUK__IDX_HBYTES] = sizeof(duk_harray); - } else if (DUK_HOBJECT_IS_COMPFUNC(h_obj)) { - vals[DUK__IDX_HBYTES] = sizeof(duk_hcompfunc); - } else if (DUK_HOBJECT_IS_NATFUNC(h_obj)) { - vals[DUK__IDX_HBYTES] = sizeof(duk_hnatfunc); - } else if (DUK_HOBJECT_IS_THREAD(h_obj)) { - vals[DUK__IDX_HBYTES] = sizeof(duk_hthread); - vals[DUK__IDX_TSTATE] = ((duk_hthread *) h_obj)->state; -#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) - } else if (DUK_HOBJECT_IS_BUFOBJ(h_obj)) { - vals[DUK__IDX_HBYTES] = sizeof(duk_hbufobj); - /* XXX: some size information */ -#endif - } else { - vals[DUK__IDX_HBYTES] = (duk_small_uint_t) sizeof(duk_hobject); - } - - vals[DUK__IDX_CLASS] = (duk_int_t) DUK_HOBJECT_GET_CLASS_NUMBER(h_obj); - vals[DUK__IDX_PBYTES] = (duk_int_t) DUK_HOBJECT_P_ALLOC_SIZE(h_obj); - vals[DUK__IDX_ESIZE] = (duk_int_t) DUK_HOBJECT_GET_ESIZE(h_obj); - vals[DUK__IDX_ENEXT] = (duk_int_t) DUK_HOBJECT_GET_ENEXT(h_obj); - vals[DUK__IDX_ASIZE] = (duk_int_t) DUK_HOBJECT_GET_ASIZE(h_obj); - vals[DUK__IDX_HSIZE] = (duk_int_t) DUK_HOBJECT_GET_HSIZE(h_obj); - - /* Note: e_next indicates the number of gc-reachable entries - * in the entry part, and also indicates the index where the - * next new property would be inserted. It does *not* indicate - * the number of non-NULL keys present in the object. That - * value could be counted separately but requires a pass through - * the key list. - */ - - if (DUK_HOBJECT_IS_COMPFUNC(h_obj)) { - duk_hbuffer *h_data = (duk_hbuffer *) DUK_HCOMPFUNC_GET_DATA(thr->heap, (duk_hcompfunc *) h_obj); - vals[DUK__IDX_BCBYTES] = (duk_int_t) (h_data ? DUK_HBUFFER_GET_SIZE(h_data) : 0); - } - break; - } - case DUK_HTYPE_BUFFER: { - duk_hbuffer *h_buf = (duk_hbuffer *) h; - - if (DUK_HBUFFER_HAS_DYNAMIC(h_buf)) { - if (DUK_HBUFFER_HAS_EXTERNAL(h_buf)) { - vals[DUK__IDX_VARIANT] = 2; /* buffer variant 2: external */ - vals[DUK__IDX_HBYTES] = (duk_uint_t) (sizeof(duk_hbuffer_external)); - } else { - /* When alloc_size == 0 the second allocation may not - * actually exist. - */ - vals[DUK__IDX_VARIANT] = 1; /* buffer variant 1: dynamic */ - vals[DUK__IDX_HBYTES] = (duk_uint_t) (sizeof(duk_hbuffer_dynamic)); - } - vals[DUK__IDX_DBYTES] = (duk_int_t) (DUK_HBUFFER_GET_SIZE(h_buf)); - } else { - DUK_ASSERT(vals[DUK__IDX_VARIANT] == 0); /* buffer variant 0: fixed */ - vals[DUK__IDX_HBYTES] = (duk_int_t) (sizeof(duk_hbuffer_fixed) + DUK_HBUFFER_GET_SIZE(h_buf)); - } - break; - } - } - -finish: - duk__inspect_multiple_uint(thr, - "type" - "\x00" - "itag" - "\x00" - "refc" - "\x00" - "hbytes" - "\x00" - "class" - "\x00" - "pbytes" - "\x00" - "esize" - "\x00" - "enext" - "\x00" - "asize" - "\x00" - "hsize" - "\x00" - "bcbytes" - "\x00" - "dbytes" - "\x00" - "tstate" - "\x00" - "variant" - "\x00" - "\x00", - (duk_int_t *) &vals); -} - -DUK_EXTERNAL void duk_inspect_callstack_entry(duk_hthread *thr, duk_int_t level) { - duk_activation *act; - duk_uint_fast32_t pc; - duk_uint_fast32_t line; - - DUK_ASSERT_API_ENTRY(thr); - - /* -1 = top callstack entry - * -2 = caller of level -1 - * etc - */ - act = duk_hthread_get_activation_for_level(thr, level); - if (act == NULL) { - duk_push_undefined(thr); - return; - } - duk_push_bare_object(thr); - - /* Relevant PC is just before current one because PC is - * post-incremented. This should match what error augment - * code does. - */ - pc = duk_hthread_get_act_prev_pc(thr, act); - - duk_push_tval(thr, &act->tv_func); - - duk_push_uint(thr, (duk_uint_t) pc); - duk_put_prop_stridx_short(thr, -3, DUK_STRIDX_PC); - -#if defined(DUK_USE_PC2LINE) - line = duk_hobject_pc2line_query(thr, -1, pc); -#else - line = 0; -#endif - duk_push_uint(thr, (duk_uint_t) line); - duk_put_prop_stridx_short(thr, -3, DUK_STRIDX_LINE_NUMBER); - - duk_put_prop_stridx_short(thr, -2, DUK_STRIDX_LC_FUNCTION); - /* Providing access to e.g. act->lex_env would be dangerous: these - * internal structures must never be accessible to the application. - * Duktape relies on them having consistent data, and this consistency - * is only asserted for, not checked for. - */ -} - -/* automatic undefs */ -#undef DUK__IDX_ASIZE -#undef DUK__IDX_BCBYTES -#undef DUK__IDX_CLASS -#undef DUK__IDX_DBYTES -#undef DUK__IDX_ENEXT -#undef DUK__IDX_ESIZE -#undef DUK__IDX_HBYTES -#undef DUK__IDX_HSIZE -#undef DUK__IDX_ITAG -#undef DUK__IDX_PBYTES -#undef DUK__IDX_REFC -#undef DUK__IDX_TSTATE -#undef DUK__IDX_TYPE -#undef DUK__IDX_VARIANT -#line 1 "duk_api_memory.c" -/* - * Memory calls. - */ - -/* #include duk_internal.h -> already included */ - -DUK_EXTERNAL void *duk_alloc_raw(duk_hthread *thr, duk_size_t size) { - DUK_ASSERT_API_ENTRY(thr); - - return DUK_ALLOC_RAW(thr->heap, size); -} - -DUK_EXTERNAL void duk_free_raw(duk_hthread *thr, void *ptr) { - DUK_ASSERT_API_ENTRY(thr); - - DUK_FREE_RAW(thr->heap, ptr); -} - -DUK_EXTERNAL void *duk_realloc_raw(duk_hthread *thr, void *ptr, duk_size_t size) { - DUK_ASSERT_API_ENTRY(thr); - - return DUK_REALLOC_RAW(thr->heap, ptr, size); -} - -DUK_EXTERNAL void *duk_alloc(duk_hthread *thr, duk_size_t size) { - DUK_ASSERT_API_ENTRY(thr); - - return DUK_ALLOC(thr->heap, size); -} - -DUK_EXTERNAL void duk_free(duk_hthread *thr, void *ptr) { - DUK_ASSERT_API_ENTRY(thr); - - DUK_FREE_CHECKED(thr, ptr); -} - -DUK_EXTERNAL void *duk_realloc(duk_hthread *thr, void *ptr, duk_size_t size) { - DUK_ASSERT_API_ENTRY(thr); - - /* - * Note: since this is an exposed API call, there should be - * no way a mark-and-sweep could have a side effect on the - * memory allocation behind 'ptr'; the pointer should never - * be something that Duktape wants to change. - * - * Thus, no need to use DUK_REALLOC_INDIRECT (and we don't - * have the storage location here anyway). - */ - - return DUK_REALLOC(thr->heap, ptr, size); -} - -DUK_EXTERNAL void duk_get_memory_functions(duk_hthread *thr, duk_memory_functions *out_funcs) { - duk_heap *heap; - - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT(out_funcs != NULL); - DUK_ASSERT(thr != NULL); - DUK_ASSERT(thr->heap != NULL); - - heap = thr->heap; - out_funcs->alloc_func = heap->alloc_func; - out_funcs->realloc_func = heap->realloc_func; - out_funcs->free_func = heap->free_func; - out_funcs->udata = heap->heap_udata; -} - -DUK_EXTERNAL void duk_gc(duk_hthread *thr, duk_uint_t flags) { - duk_heap *heap; - duk_small_uint_t ms_flags; - - DUK_ASSERT_API_ENTRY(thr); - heap = thr->heap; - DUK_ASSERT(heap != NULL); - - DUK_D(DUK_DPRINT("mark-and-sweep requested by application")); - DUK_ASSERT(DUK_GC_COMPACT == DUK_MS_FLAG_EMERGENCY); /* Compact flag is 1:1 with emergency flag which forces compaction. */ - ms_flags = (duk_small_uint_t) flags; - duk_heap_mark_and_sweep(heap, ms_flags); -} -#line 1 "duk_api_object.c" -/* - * Object handling: property access and other support functions. - */ - -/* #include duk_internal.h -> already included */ - -/* - * Property handling - * - * The API exposes only the most common property handling functions. - * The caller can invoke ECMAScript built-ins for full control (e.g. - * defineProperty, getOwnPropertyDescriptor). - */ - -DUK_EXTERNAL duk_bool_t duk_get_prop(duk_hthread *thr, duk_idx_t obj_idx) { - duk_tval *tv_obj; - duk_tval *tv_key; - duk_bool_t rc; - - DUK_ASSERT_API_ENTRY(thr); - - /* Note: copying tv_obj and tv_key to locals to shield against a valstack - * resize is not necessary for a property get right now. - */ - - tv_obj = duk_require_tval(thr, obj_idx); - tv_key = duk_require_tval(thr, -1); - - rc = duk_hobject_getprop(thr, tv_obj, tv_key); - DUK_ASSERT(rc == 0 || rc == 1); - /* a value is left on stack regardless of rc */ - - duk_remove_m2(thr); /* remove key */ - DUK_ASSERT(duk_is_undefined(thr, -1) || rc == 1); - return rc; /* 1 if property found, 0 otherwise */ -} - -DUK_EXTERNAL duk_bool_t duk_get_prop_string(duk_hthread *thr, duk_idx_t obj_idx, const char *key) { - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT(key != NULL); - - obj_idx = duk_require_normalize_index(thr, obj_idx); - (void) duk_push_string(thr, key); - return duk_get_prop(thr, obj_idx); -} - -DUK_EXTERNAL duk_bool_t duk_get_prop_lstring(duk_hthread *thr, duk_idx_t obj_idx, const char *key, duk_size_t key_len) { - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT(key != NULL); - - obj_idx = duk_require_normalize_index(thr, obj_idx); - (void) duk_push_lstring(thr, key, key_len); - return duk_get_prop(thr, obj_idx); -} - -#if !defined(DUK_USE_PREFER_SIZE) -DUK_EXTERNAL duk_bool_t duk_get_prop_literal_raw(duk_hthread *thr, duk_idx_t obj_idx, const char *key, duk_size_t key_len) { - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT(key != NULL); - DUK_ASSERT(key[key_len] == (char) 0); - - obj_idx = duk_require_normalize_index(thr, obj_idx); - (void) duk_push_literal_raw(thr, key, key_len); - return duk_get_prop(thr, obj_idx); -} -#endif - -DUK_EXTERNAL duk_bool_t duk_get_prop_index(duk_hthread *thr, duk_idx_t obj_idx, duk_uarridx_t arr_idx) { - DUK_ASSERT_API_ENTRY(thr); - - obj_idx = duk_require_normalize_index(thr, obj_idx); - duk_push_uarridx(thr, arr_idx); - return duk_get_prop(thr, obj_idx); -} - -DUK_EXTERNAL duk_bool_t duk_get_prop_heapptr(duk_hthread *thr, duk_idx_t obj_idx, void *ptr) { - DUK_ASSERT_API_ENTRY(thr); - - obj_idx = duk_require_normalize_index(thr, obj_idx); - (void) duk_push_heapptr(thr, ptr); /* NULL -> 'undefined' */ - return duk_get_prop(thr, obj_idx); -} - -DUK_INTERNAL duk_bool_t duk_get_prop_stridx(duk_hthread *thr, duk_idx_t obj_idx, duk_small_uint_t stridx) { - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT_STRIDX_VALID(stridx); - - obj_idx = duk_require_normalize_index(thr, obj_idx); - (void) duk_push_hstring(thr, DUK_HTHREAD_GET_STRING(thr, stridx)); - return duk_get_prop(thr, obj_idx); -} - -DUK_INTERNAL duk_bool_t duk_get_prop_stridx_short_raw(duk_hthread *thr, duk_uint_t packed_args) { - return duk_get_prop_stridx(thr, (duk_idx_t) (duk_int16_t) (packed_args >> 16), (duk_small_uint_t) (packed_args & 0xffffUL)); -} - -DUK_INTERNAL duk_bool_t duk_get_prop_stridx_boolean(duk_hthread *thr, - duk_idx_t obj_idx, - duk_small_uint_t stridx, - duk_bool_t *out_has_prop) { - duk_bool_t rc; - - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT_STRIDX_VALID(stridx); - - rc = duk_get_prop_stridx(thr, obj_idx, stridx); - if (out_has_prop) { - *out_has_prop = rc; - } - return duk_to_boolean_top_pop(thr); -} - -/* This get variant is for internal use, it differs from standard - * duk_get_prop() in that: - * - Object argument must be an object (primitive values not supported). - * - Key argument must be a string (no coercion). - * - Only own properties are checked (no inheritance). Only "entry part" - * properties are checked (not array index properties). - * - Property must be a plain data property, not a getter. - * - Proxy traps are not triggered. - */ -DUK_INTERNAL duk_bool_t duk_xget_owndataprop(duk_hthread *thr, duk_idx_t obj_idx) { - duk_hobject *h_obj; - duk_hstring *h_key; - duk_tval *tv_val; - - DUK_ASSERT_API_ENTRY(thr); - - /* Note: copying tv_obj and tv_key to locals to shield against a valstack - * resize is not necessary for a property get right now. - */ - - h_obj = duk_get_hobject(thr, obj_idx); - if (h_obj == NULL) { - return 0; - } - h_key = duk_require_hstring(thr, -1); - - tv_val = duk_hobject_find_entry_tval_ptr(thr->heap, h_obj, h_key); - if (tv_val == NULL) { - return 0; - } - - duk_push_tval(thr, tv_val); - duk_remove_m2(thr); /* remove key */ - - return 1; -} - -DUK_INTERNAL duk_bool_t duk_xget_owndataprop_stridx(duk_hthread *thr, duk_idx_t obj_idx, duk_small_uint_t stridx) { - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT_STRIDX_VALID(stridx); - - obj_idx = duk_require_normalize_index(thr, obj_idx); - (void) duk_push_hstring(thr, DUK_HTHREAD_GET_STRING(thr, stridx)); - return duk_xget_owndataprop(thr, obj_idx); -} - -DUK_INTERNAL duk_bool_t duk_xget_owndataprop_stridx_short_raw(duk_hthread *thr, duk_uint_t packed_args) { - return duk_xget_owndataprop_stridx(thr, - (duk_idx_t) (duk_int16_t) (packed_args >> 16), - (duk_small_uint_t) (packed_args & 0xffffUL)); -} - -DUK_LOCAL duk_bool_t duk__put_prop_shared(duk_hthread *thr, duk_idx_t obj_idx, duk_idx_t idx_key) { - duk_tval *tv_obj; - duk_tval *tv_key; - duk_tval *tv_val; - duk_bool_t throw_flag; - duk_bool_t rc; - - /* Note: copying tv_obj and tv_key to locals to shield against a valstack - * resize is not necessary for a property put right now (putprop protects - * against it internally). - */ - - /* Key and value indices are either (-2, -1) or (-1, -2). Given idx_key, - * idx_val is always (idx_key ^ 0x01). - */ - DUK_ASSERT((idx_key == -2 && (idx_key ^ 1) == -1) || (idx_key == -1 && (idx_key ^ 1) == -2)); - /* XXX: Direct access; faster validation. */ - tv_obj = duk_require_tval(thr, obj_idx); - tv_key = duk_require_tval(thr, idx_key); - tv_val = duk_require_tval(thr, idx_key ^ 1); - throw_flag = duk_is_strict_call(thr); - - rc = duk_hobject_putprop(thr, tv_obj, tv_key, tv_val, throw_flag); - DUK_ASSERT(rc == 0 || rc == 1); - - duk_pop_2(thr); /* remove key and value */ - return rc; /* 1 if property found, 0 otherwise */ -} - -DUK_EXTERNAL duk_bool_t duk_put_prop(duk_hthread *thr, duk_idx_t obj_idx) { - DUK_ASSERT_API_ENTRY(thr); - return duk__put_prop_shared(thr, obj_idx, -2); -} - -DUK_EXTERNAL duk_bool_t duk_put_prop_string(duk_hthread *thr, duk_idx_t obj_idx, const char *key) { - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT(key != NULL); - - /* Careful here and with other duk_put_prop_xxx() helpers: the - * target object and the property value may be in the same value - * stack slot (unusual, but still conceptually clear). - */ - obj_idx = duk_normalize_index(thr, obj_idx); - (void) duk_push_string(thr, key); - return duk__put_prop_shared(thr, obj_idx, -1); -} - -DUK_EXTERNAL duk_bool_t duk_put_prop_lstring(duk_hthread *thr, duk_idx_t obj_idx, const char *key, duk_size_t key_len) { - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT(key != NULL); - - obj_idx = duk_normalize_index(thr, obj_idx); - (void) duk_push_lstring(thr, key, key_len); - return duk__put_prop_shared(thr, obj_idx, -1); -} - -#if !defined(DUK_USE_PREFER_SIZE) -DUK_EXTERNAL duk_bool_t duk_put_prop_literal_raw(duk_hthread *thr, duk_idx_t obj_idx, const char *key, duk_size_t key_len) { - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT(key != NULL); - DUK_ASSERT(key[key_len] == (char) 0); - - obj_idx = duk_normalize_index(thr, obj_idx); - (void) duk_push_literal_raw(thr, key, key_len); - return duk__put_prop_shared(thr, obj_idx, -1); -} -#endif - -DUK_EXTERNAL duk_bool_t duk_put_prop_index(duk_hthread *thr, duk_idx_t obj_idx, duk_uarridx_t arr_idx) { - DUK_ASSERT_API_ENTRY(thr); - - obj_idx = duk_require_normalize_index(thr, obj_idx); - duk_push_uarridx(thr, arr_idx); - return duk__put_prop_shared(thr, obj_idx, -1); -} - -DUK_EXTERNAL duk_bool_t duk_put_prop_heapptr(duk_hthread *thr, duk_idx_t obj_idx, void *ptr) { - DUK_ASSERT_API_ENTRY(thr); - - obj_idx = duk_require_normalize_index(thr, obj_idx); - (void) duk_push_heapptr(thr, ptr); /* NULL -> 'undefined' */ - return duk__put_prop_shared(thr, obj_idx, -1); -} - -DUK_INTERNAL duk_bool_t duk_put_prop_stridx(duk_hthread *thr, duk_idx_t obj_idx, duk_small_uint_t stridx) { - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT_STRIDX_VALID(stridx); - - obj_idx = duk_require_normalize_index(thr, obj_idx); - duk_push_hstring(thr, DUK_HTHREAD_GET_STRING(thr, stridx)); - return duk__put_prop_shared(thr, obj_idx, -1); -} - -DUK_INTERNAL duk_bool_t duk_put_prop_stridx_short_raw(duk_hthread *thr, duk_uint_t packed_args) { - return duk_put_prop_stridx(thr, (duk_idx_t) (duk_int16_t) (packed_args >> 16), (duk_small_uint_t) (packed_args & 0xffffUL)); -} - -DUK_EXTERNAL duk_bool_t duk_del_prop(duk_hthread *thr, duk_idx_t obj_idx) { - duk_tval *tv_obj; - duk_tval *tv_key; - duk_bool_t throw_flag; - duk_bool_t rc; - - DUK_ASSERT_API_ENTRY(thr); - - /* Note: copying tv_obj and tv_key to locals to shield against a valstack - * resize is not necessary for a property delete right now. - */ - - tv_obj = duk_require_tval(thr, obj_idx); - tv_key = duk_require_tval(thr, -1); - throw_flag = duk_is_strict_call(thr); - - rc = duk_hobject_delprop(thr, tv_obj, tv_key, throw_flag); - DUK_ASSERT(rc == 0 || rc == 1); - - duk_pop(thr); /* remove key */ - return rc; -} - -DUK_EXTERNAL duk_bool_t duk_del_prop_string(duk_hthread *thr, duk_idx_t obj_idx, const char *key) { - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT(key != NULL); - - obj_idx = duk_require_normalize_index(thr, obj_idx); - (void) duk_push_string(thr, key); - return duk_del_prop(thr, obj_idx); -} - -DUK_EXTERNAL duk_bool_t duk_del_prop_lstring(duk_hthread *thr, duk_idx_t obj_idx, const char *key, duk_size_t key_len) { - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT(key != NULL); - - obj_idx = duk_require_normalize_index(thr, obj_idx); - (void) duk_push_lstring(thr, key, key_len); - return duk_del_prop(thr, obj_idx); -} - -#if !defined(DUK_USE_PREFER_SIZE) -DUK_EXTERNAL duk_bool_t duk_del_prop_literal_raw(duk_hthread *thr, duk_idx_t obj_idx, const char *key, duk_size_t key_len) { - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT(key != NULL); - DUK_ASSERT(key[key_len] == (char) 0); - - obj_idx = duk_require_normalize_index(thr, obj_idx); - (void) duk_push_literal_raw(thr, key, key_len); - return duk_del_prop(thr, obj_idx); -} -#endif - -DUK_EXTERNAL duk_bool_t duk_del_prop_index(duk_hthread *thr, duk_idx_t obj_idx, duk_uarridx_t arr_idx) { - DUK_ASSERT_API_ENTRY(thr); - - obj_idx = duk_require_normalize_index(thr, obj_idx); - duk_push_uarridx(thr, arr_idx); - return duk_del_prop(thr, obj_idx); -} - -DUK_EXTERNAL duk_bool_t duk_del_prop_heapptr(duk_hthread *thr, duk_idx_t obj_idx, void *ptr) { - DUK_ASSERT_API_ENTRY(thr); - - obj_idx = duk_require_normalize_index(thr, obj_idx); - (void) duk_push_heapptr(thr, ptr); /* NULL -> 'undefined' */ - return duk_del_prop(thr, obj_idx); -} - -DUK_INTERNAL duk_bool_t duk_del_prop_stridx(duk_hthread *thr, duk_idx_t obj_idx, duk_small_uint_t stridx) { - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT_STRIDX_VALID(stridx); - - obj_idx = duk_require_normalize_index(thr, obj_idx); - duk_push_hstring(thr, DUK_HTHREAD_GET_STRING(thr, stridx)); - return duk_del_prop(thr, obj_idx); -} - -#if 0 -DUK_INTERNAL duk_bool_t duk_del_prop_stridx_short_raw(duk_hthread *thr, duk_uint_t packed_args) { - return duk_del_prop_stridx(thr, (duk_idx_t) (duk_int16_t) (packed_args >> 16), - (duk_small_uint_t) (packed_args & 0xffffUL)); -} -#endif - -DUK_EXTERNAL duk_bool_t duk_has_prop(duk_hthread *thr, duk_idx_t obj_idx) { - duk_tval *tv_obj; - duk_tval *tv_key; - duk_bool_t rc; - - DUK_ASSERT_API_ENTRY(thr); - - /* Note: copying tv_obj and tv_key to locals to shield against a valstack - * resize is not necessary for a property existence check right now. - */ - - tv_obj = duk_require_tval(thr, obj_idx); - tv_key = duk_require_tval(thr, -1); - - rc = duk_hobject_hasprop(thr, tv_obj, tv_key); - DUK_ASSERT(rc == 0 || rc == 1); - - duk_pop(thr); /* remove key */ - return rc; /* 1 if property found, 0 otherwise */ -} - -DUK_EXTERNAL duk_bool_t duk_has_prop_string(duk_hthread *thr, duk_idx_t obj_idx, const char *key) { - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT(key != NULL); - - obj_idx = duk_require_normalize_index(thr, obj_idx); - (void) duk_push_string(thr, key); - return duk_has_prop(thr, obj_idx); -} - -DUK_EXTERNAL duk_bool_t duk_has_prop_lstring(duk_hthread *thr, duk_idx_t obj_idx, const char *key, duk_size_t key_len) { - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT(key != NULL); - - obj_idx = duk_require_normalize_index(thr, obj_idx); - (void) duk_push_lstring(thr, key, key_len); - return duk_has_prop(thr, obj_idx); -} - -#if !defined(DUK_USE_PREFER_SIZE) -DUK_EXTERNAL duk_bool_t duk_has_prop_literal_raw(duk_hthread *thr, duk_idx_t obj_idx, const char *key, duk_size_t key_len) { - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT(key != NULL); - DUK_ASSERT(key[key_len] == (char) 0); - - obj_idx = duk_require_normalize_index(thr, obj_idx); - (void) duk_push_literal_raw(thr, key, key_len); - return duk_has_prop(thr, obj_idx); -} -#endif - -DUK_EXTERNAL duk_bool_t duk_has_prop_index(duk_hthread *thr, duk_idx_t obj_idx, duk_uarridx_t arr_idx) { - DUK_ASSERT_API_ENTRY(thr); - - obj_idx = duk_require_normalize_index(thr, obj_idx); - duk_push_uarridx(thr, arr_idx); - return duk_has_prop(thr, obj_idx); -} - -DUK_EXTERNAL duk_bool_t duk_has_prop_heapptr(duk_hthread *thr, duk_idx_t obj_idx, void *ptr) { - DUK_ASSERT_API_ENTRY(thr); - - obj_idx = duk_require_normalize_index(thr, obj_idx); - (void) duk_push_heapptr(thr, ptr); /* NULL -> 'undefined' */ - return duk_has_prop(thr, obj_idx); -} - -DUK_INTERNAL duk_bool_t duk_has_prop_stridx(duk_hthread *thr, duk_idx_t obj_idx, duk_small_uint_t stridx) { - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT_STRIDX_VALID(stridx); - - obj_idx = duk_require_normalize_index(thr, obj_idx); - duk_push_hstring(thr, DUK_HTHREAD_GET_STRING(thr, stridx)); - return duk_has_prop(thr, obj_idx); -} - -#if 0 -DUK_INTERNAL duk_bool_t duk_has_prop_stridx_short_raw(duk_hthread *thr, duk_uint_t packed_args) { - return duk_has_prop_stridx(thr, (duk_idx_t) (duk_int16_t) (packed_args >> 16), - (duk_small_uint_t) (packed_args & 0xffffUL)); -} -#endif - -/* Define own property without inheritance lookups and such. This differs from - * [[DefineOwnProperty]] because special behaviors (like Array 'length') are - * not invoked by this method. The caller must be careful to invoke any such - * behaviors if necessary. - */ -DUK_INTERNAL void duk_xdef_prop(duk_hthread *thr, duk_idx_t obj_idx, duk_small_uint_t desc_flags) { - duk_hobject *obj; - duk_hstring *key; - - DUK_ASSERT_API_ENTRY(thr); - - obj = duk_require_hobject(thr, obj_idx); - DUK_ASSERT(obj != NULL); - key = duk_to_property_key_hstring(thr, -2); - DUK_ASSERT(key != NULL); - DUK_ASSERT(duk_require_tval(thr, -1) != NULL); - - duk_hobject_define_property_internal(thr, obj, key, desc_flags); - - duk_pop(thr); /* pop key */ -} - -DUK_INTERNAL void duk_xdef_prop_index(duk_hthread *thr, duk_idx_t obj_idx, duk_uarridx_t arr_idx, duk_small_uint_t desc_flags) { - duk_hobject *obj; - - DUK_ASSERT_API_ENTRY(thr); - - obj = duk_require_hobject(thr, obj_idx); - DUK_ASSERT(obj != NULL); - - duk_hobject_define_property_internal_arridx(thr, obj, arr_idx, desc_flags); - /* value popped by call */ -} - -DUK_INTERNAL void duk_xdef_prop_stridx(duk_hthread *thr, duk_idx_t obj_idx, duk_small_uint_t stridx, duk_small_uint_t desc_flags) { - duk_hobject *obj; - duk_hstring *key; - - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT_STRIDX_VALID(stridx); - - obj = duk_require_hobject(thr, obj_idx); - DUK_ASSERT(obj != NULL); - key = DUK_HTHREAD_GET_STRING(thr, stridx); - DUK_ASSERT(key != NULL); - DUK_ASSERT(duk_require_tval(thr, -1) != NULL); - - duk_hobject_define_property_internal(thr, obj, key, desc_flags); - /* value popped by call */ -} - -DUK_INTERNAL void duk_xdef_prop_stridx_short_raw(duk_hthread *thr, duk_uint_t packed_args) { - duk_xdef_prop_stridx(thr, - (duk_idx_t) (duk_int8_t) (packed_args >> 24), - (duk_small_uint_t) (packed_args >> 8) & 0xffffUL, - (duk_small_uint_t) (packed_args & 0xffL)); -} - -#if 0 /*unused*/ -DUK_INTERNAL void duk_xdef_prop_stridx_builtin(duk_hthread *thr, duk_idx_t obj_idx, duk_small_uint_t stridx, duk_small_int_t builtin_idx, duk_small_uint_t desc_flags) { - duk_hobject *obj; - duk_hstring *key; - - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT_STRIDX_VALID(stridx); - DUK_ASSERT_BIDX_VALID(builtin_idx); - - obj = duk_require_hobject(thr, obj_idx); - DUK_ASSERT(obj != NULL); - key = DUK_HTHREAD_GET_STRING(thr, stridx); - DUK_ASSERT(key != NULL); - - duk_push_hobject(thr, thr->builtins[builtin_idx]); - duk_hobject_define_property_internal(thr, obj, key, desc_flags); - /* value popped by call */ -} -#endif - -/* This is a rare property helper; it sets the global thrower (E5 Section 13.2.3) - * setter/getter into an object property. This is needed by the 'arguments' - * object creation code, function instance creation code, and Function.prototype.bind(). - */ - -DUK_INTERNAL void duk_xdef_prop_stridx_thrower(duk_hthread *thr, duk_idx_t obj_idx, duk_small_uint_t stridx) { - DUK_ASSERT_API_ENTRY(thr); - - obj_idx = duk_require_normalize_index(thr, obj_idx); - duk_push_hstring_stridx(thr, stridx); - duk_push_hobject_bidx(thr, DUK_BIDX_TYPE_ERROR_THROWER); - duk_dup_top(thr); - duk_def_prop(thr, obj_idx, DUK_DEFPROP_HAVE_SETTER | DUK_DEFPROP_HAVE_GETTER | DUK_DEFPROP_FORCE); /* attributes always 0 */ -} - -/* Object.getOwnPropertyDescriptor() equivalent C binding. */ -DUK_EXTERNAL void duk_get_prop_desc(duk_hthread *thr, duk_idx_t obj_idx, duk_uint_t flags) { - DUK_ASSERT_API_ENTRY(thr); - DUK_UNREF(flags); /* no flags defined yet */ - - duk_hobject_object_get_own_property_descriptor(thr, obj_idx); /* [ ... key ] -> [ ... desc ] */ -} - -/* Object.defineProperty() equivalent C binding. */ -DUK_EXTERNAL void duk_def_prop(duk_hthread *thr, duk_idx_t obj_idx, duk_uint_t flags) { - duk_idx_t idx_base; - duk_hobject *obj; - duk_hstring *key; - duk_idx_t idx_value; - duk_hobject *get; - duk_hobject *set; - duk_uint_t is_data_desc; - duk_uint_t is_acc_desc; - - DUK_ASSERT_API_ENTRY(thr); - - obj = duk_require_hobject(thr, obj_idx); - - is_data_desc = flags & (DUK_DEFPROP_HAVE_VALUE | DUK_DEFPROP_HAVE_WRITABLE); - is_acc_desc = flags & (DUK_DEFPROP_HAVE_GETTER | DUK_DEFPROP_HAVE_SETTER); - if (is_data_desc && is_acc_desc) { - /* "Have" flags must not be conflicting so that they would - * apply to both a plain property and an accessor at the same - * time. - */ - goto fail_invalid_desc; - } - - idx_base = duk_get_top_index(thr); - if (flags & DUK_DEFPROP_HAVE_SETTER) { - duk_require_type_mask(thr, idx_base, DUK_TYPE_MASK_UNDEFINED | DUK_TYPE_MASK_OBJECT | DUK_TYPE_MASK_LIGHTFUNC); - set = duk_get_hobject_promote_lfunc(thr, idx_base); - if (set != NULL && !DUK_HOBJECT_IS_CALLABLE(set)) { - goto fail_not_callable; - } - idx_base--; - } else { - set = NULL; - } - if (flags & DUK_DEFPROP_HAVE_GETTER) { - duk_require_type_mask(thr, idx_base, DUK_TYPE_MASK_UNDEFINED | DUK_TYPE_MASK_OBJECT | DUK_TYPE_MASK_LIGHTFUNC); - get = duk_get_hobject_promote_lfunc(thr, idx_base); - if (get != NULL && !DUK_HOBJECT_IS_CALLABLE(get)) { - goto fail_not_callable; - } - idx_base--; - } else { - get = NULL; - } - if (flags & DUK_DEFPROP_HAVE_VALUE) { - idx_value = idx_base; - idx_base--; - } else { - idx_value = (duk_idx_t) -1; - } - key = duk_to_property_key_hstring(thr, idx_base); - DUK_ASSERT(key != NULL); - - duk_require_valid_index(thr, idx_base); - - duk_hobject_define_property_helper(thr, flags /*defprop_flags*/, obj, key, idx_value, get, set, 1 /*throw_flag*/); - - /* Clean up stack */ - - duk_set_top(thr, idx_base); - - /* [ ... obj ... ] */ - - return; - -fail_invalid_desc: - DUK_ERROR_TYPE(thr, DUK_STR_INVALID_DESCRIPTOR); - DUK_WO_NORETURN(return;); - -fail_not_callable: - DUK_ERROR_TYPE(thr, DUK_STR_NOT_CALLABLE); - DUK_WO_NORETURN(return;); -} - -/* - * Object related - */ - -DUK_EXTERNAL void duk_compact(duk_hthread *thr, duk_idx_t obj_idx) { - duk_hobject *obj; - - DUK_ASSERT_API_ENTRY(thr); - - obj = duk_get_hobject(thr, obj_idx); - if (obj) { - /* Note: this may fail, caller should protect the call if necessary */ - duk_hobject_compact_props(thr, obj); - } -} - -DUK_INTERNAL void duk_compact_m1(duk_hthread *thr) { - DUK_ASSERT_API_ENTRY(thr); - - duk_compact(thr, -1); -} - -/* XXX: the duk_hobject_enum.c stack APIs should be reworked */ - -DUK_EXTERNAL void duk_enum(duk_hthread *thr, duk_idx_t obj_idx, duk_uint_t enum_flags) { - DUK_ASSERT_API_ENTRY(thr); - - duk_dup(thr, obj_idx); - duk_require_hobject_promote_mask(thr, -1, DUK_TYPE_MASK_LIGHTFUNC | DUK_TYPE_MASK_BUFFER); - duk_hobject_enumerator_create(thr, enum_flags); /* [target] -> [enum] */ -} - -DUK_EXTERNAL duk_bool_t duk_next(duk_hthread *thr, duk_idx_t enum_index, duk_bool_t get_value) { - DUK_ASSERT_API_ENTRY(thr); - - duk_require_hobject(thr, enum_index); - duk_dup(thr, enum_index); - return duk_hobject_enumerator_next(thr, get_value); -} - -DUK_INTERNAL void duk_seal_freeze_raw(duk_hthread *thr, duk_idx_t obj_idx, duk_bool_t is_freeze) { - duk_tval *tv; - duk_hobject *h; - - DUK_ASSERT_API_ENTRY(thr); - - tv = duk_require_tval(thr, obj_idx); - DUK_ASSERT(tv != NULL); - - /* Seal/freeze are quite rare in practice so it'd be nice to get the - * correct behavior simply via automatic promotion (at the cost of some - * memory churn). However, the promoted objects don't behave the same, - * e.g. promoted lightfuncs are extensible. - */ - - switch (DUK_TVAL_GET_TAG(tv)) { - case DUK_TAG_BUFFER: - /* Plain buffer: already sealed, but not frozen (and can't be frozen - * because index properties can't be made non-writable. - */ - if (is_freeze) { - goto fail_cannot_freeze; - } - break; - case DUK_TAG_LIGHTFUNC: - /* Lightfunc: already sealed and frozen, success. */ - break; - case DUK_TAG_OBJECT: - h = DUK_TVAL_GET_OBJECT(tv); - DUK_ASSERT(h != NULL); - if (is_freeze && DUK_HOBJECT_IS_BUFOBJ(h)) { - /* Buffer objects cannot be frozen because there's no internal - * support for making virtual array indices non-writable. - */ - DUK_DD(DUK_DDPRINT("cannot freeze a buffer object")); - goto fail_cannot_freeze; - } - duk_hobject_object_seal_freeze_helper(thr, h, is_freeze); - - /* Sealed and frozen objects cannot gain any more properties, - * so this is a good time to compact them. - */ - duk_hobject_compact_props(thr, h); - break; - default: - /* ES2015 Sections 19.1.2.5, 19.1.2.17 */ - break; - } - return; - -fail_cannot_freeze: - DUK_ERROR_TYPE_INVALID_ARGS(thr); /* XXX: proper error message */ - DUK_WO_NORETURN(return;); -} - -DUK_EXTERNAL void duk_seal(duk_hthread *thr, duk_idx_t obj_idx) { - DUK_ASSERT_API_ENTRY(thr); - - duk_seal_freeze_raw(thr, obj_idx, 0 /*is_freeze*/); -} - -DUK_EXTERNAL void duk_freeze(duk_hthread *thr, duk_idx_t obj_idx) { - DUK_ASSERT_API_ENTRY(thr); - - duk_seal_freeze_raw(thr, obj_idx, 1 /*is_freeze*/); -} - -/* - * Helpers for writing multiple properties - */ - -DUK_EXTERNAL void duk_put_function_list(duk_hthread *thr, duk_idx_t obj_idx, const duk_function_list_entry *funcs) { - const duk_function_list_entry *ent = funcs; - - DUK_ASSERT_API_ENTRY(thr); - - obj_idx = duk_require_normalize_index(thr, obj_idx); - if (ent != NULL) { - while (ent->key != NULL) { - duk_push_c_function(thr, ent->value, ent->nargs); - duk_put_prop_string(thr, obj_idx, ent->key); - ent++; - } - } -} - -DUK_EXTERNAL void duk_put_number_list(duk_hthread *thr, duk_idx_t obj_idx, const duk_number_list_entry *numbers) { - const duk_number_list_entry *ent = numbers; - duk_tval *tv; - - DUK_ASSERT_API_ENTRY(thr); - - obj_idx = duk_require_normalize_index(thr, obj_idx); - if (ent != NULL) { - while (ent->key != NULL) { - tv = thr->valstack_top++; - DUK_ASSERT(DUK_TVAL_IS_UNDEFINED(tv)); /* value stack init policy */ - DUK_TVAL_SET_NUMBER_CHKFAST_SLOW(tv, ent->value); /* no need for decref/incref */ - duk_put_prop_string(thr, obj_idx, ent->key); - ent++; - } - } -} - -/* - * Shortcut for accessing global object properties - */ - -DUK_EXTERNAL duk_bool_t duk_get_global_string(duk_hthread *thr, const char *key) { - duk_bool_t ret; - - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT(thr->builtins[DUK_BIDX_GLOBAL] != NULL); - - /* XXX: direct implementation */ - - duk_push_hobject(thr, thr->builtins[DUK_BIDX_GLOBAL]); - ret = duk_get_prop_string(thr, -1, key); - duk_remove_m2(thr); - return ret; -} - -DUK_EXTERNAL duk_bool_t duk_get_global_lstring(duk_hthread *thr, const char *key, duk_size_t key_len) { - duk_bool_t ret; - - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT(thr->builtins[DUK_BIDX_GLOBAL] != NULL); - - /* XXX: direct implementation */ - - duk_push_hobject(thr, thr->builtins[DUK_BIDX_GLOBAL]); - ret = duk_get_prop_lstring(thr, -1, key, key_len); - duk_remove_m2(thr); - return ret; -} - -#if !defined(DUK_USE_PREFER_SIZE) -DUK_EXTERNAL duk_bool_t duk_get_global_literal_raw(duk_hthread *thr, const char *key, duk_size_t key_len) { - duk_bool_t ret; - - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT(thr->builtins[DUK_BIDX_GLOBAL] != NULL); - DUK_ASSERT(key[key_len] == (char) 0); - - /* XXX: direct implementation */ - - duk_push_hobject(thr, thr->builtins[DUK_BIDX_GLOBAL]); - ret = duk_get_prop_literal_raw(thr, -1, key, key_len); - duk_remove_m2(thr); - return ret; -} -#endif - -DUK_EXTERNAL duk_bool_t duk_get_global_heapptr(duk_hthread *thr, void *ptr) { - duk_bool_t ret; - - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT(thr->builtins[DUK_BIDX_GLOBAL] != NULL); - - /* XXX: direct implementation */ - - duk_push_hobject(thr, thr->builtins[DUK_BIDX_GLOBAL]); - ret = duk_get_prop_heapptr(thr, -1, ptr); - duk_remove_m2(thr); - return ret; -} - -DUK_EXTERNAL duk_bool_t duk_put_global_string(duk_hthread *thr, const char *key) { - duk_bool_t ret; - - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT(thr->builtins[DUK_BIDX_GLOBAL] != NULL); - - /* XXX: direct implementation */ - - duk_push_hobject(thr, thr->builtins[DUK_BIDX_GLOBAL]); - duk_insert(thr, -2); - ret = duk_put_prop_string(thr, -2, key); /* [ ... global val ] -> [ ... global ] */ - duk_pop(thr); - return ret; -} - -DUK_EXTERNAL duk_bool_t duk_put_global_lstring(duk_hthread *thr, const char *key, duk_size_t key_len) { - duk_bool_t ret; - - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT(thr->builtins[DUK_BIDX_GLOBAL] != NULL); - - /* XXX: direct implementation */ - - duk_push_hobject(thr, thr->builtins[DUK_BIDX_GLOBAL]); - duk_insert(thr, -2); - ret = duk_put_prop_lstring(thr, -2, key, key_len); /* [ ... global val ] -> [ ... global ] */ - duk_pop(thr); - return ret; -} - -#if !defined(DUK_USE_PREFER_SIZE) -DUK_EXTERNAL duk_bool_t duk_put_global_literal_raw(duk_hthread *thr, const char *key, duk_size_t key_len) { - duk_bool_t ret; - - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT(thr->builtins[DUK_BIDX_GLOBAL] != NULL); - DUK_ASSERT(key[key_len] == (char) 0); - - /* XXX: direct implementation */ - - duk_push_hobject(thr, thr->builtins[DUK_BIDX_GLOBAL]); - duk_insert(thr, -2); - ret = duk_put_prop_literal_raw(thr, -2, key, key_len); /* [ ... global val ] -> [ ... global ] */ - duk_pop(thr); - return ret; -} -#endif - -DUK_EXTERNAL duk_bool_t duk_put_global_heapptr(duk_hthread *thr, void *ptr) { - duk_bool_t ret; - - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT(thr->builtins[DUK_BIDX_GLOBAL] != NULL); - - /* XXX: direct implementation */ - - duk_push_hobject(thr, thr->builtins[DUK_BIDX_GLOBAL]); - duk_insert(thr, -2); - ret = duk_put_prop_heapptr(thr, -2, ptr); /* [ ... global val ] -> [ ... global ] */ - duk_pop(thr); - return ret; -} - -/* - * ES2015 GetMethod() - */ - -DUK_INTERNAL duk_bool_t duk_get_method_stridx(duk_hthread *thr, duk_idx_t idx, duk_small_uint_t stridx) { - (void) duk_get_prop_stridx(thr, idx, stridx); - if (duk_is_null_or_undefined(thr, -1)) { - duk_pop_nodecref_unsafe(thr); - return 0; - } - if (!duk_is_callable(thr, -1)) { - DUK_ERROR_TYPE(thr, DUK_STR_NOT_CALLABLE); - DUK_WO_NORETURN(return 0;); - } - return 1; -} - -/* - * Object prototype - */ - -DUK_EXTERNAL void duk_get_prototype(duk_hthread *thr, duk_idx_t idx) { - duk_hobject *obj; - duk_hobject *proto; - - DUK_ASSERT_API_ENTRY(thr); - - obj = duk_require_hobject(thr, idx); - DUK_ASSERT(obj != NULL); - - /* XXX: shared helper for duk_push_hobject_or_undefined()? */ - proto = DUK_HOBJECT_GET_PROTOTYPE(thr->heap, obj); - if (proto) { - duk_push_hobject(thr, proto); - } else { - duk_push_undefined(thr); - } -} - -DUK_EXTERNAL void duk_set_prototype(duk_hthread *thr, duk_idx_t idx) { - duk_hobject *obj; - duk_hobject *proto; - - DUK_ASSERT_API_ENTRY(thr); - - obj = duk_require_hobject(thr, idx); - DUK_ASSERT(obj != NULL); - duk_require_type_mask(thr, -1, DUK_TYPE_MASK_UNDEFINED | DUK_TYPE_MASK_OBJECT); - proto = duk_get_hobject(thr, -1); - /* proto can also be NULL here (allowed explicitly) */ - -#if defined(DUK_USE_ROM_OBJECTS) - if (DUK_HEAPHDR_HAS_READONLY((duk_heaphdr *) obj)) { - DUK_ERROR_TYPE(thr, DUK_STR_NOT_CONFIGURABLE); /* XXX: "read only object"? */ - DUK_WO_NORETURN(return;); - } -#endif - - DUK_HOBJECT_SET_PROTOTYPE_UPDREF(thr, obj, proto); - - duk_pop(thr); -} - -DUK_INTERNAL void duk_clear_prototype(duk_hthread *thr, duk_idx_t idx) { - duk_hobject *obj; - - DUK_ASSERT_API_ENTRY(thr); - - obj = duk_require_hobject(thr, idx); - DUK_ASSERT(obj != NULL); - -#if defined(DUK_USE_ROM_OBJECTS) - if (DUK_HEAPHDR_HAS_READONLY((duk_heaphdr *) obj)) { - DUK_ERROR_TYPE(thr, DUK_STR_NOT_CONFIGURABLE); /* XXX: "read only object"? */ - DUK_WO_NORETURN(return;); - } -#endif - - DUK_HOBJECT_SET_PROTOTYPE_UPDREF(thr, obj, NULL); -} - -DUK_INTERNAL duk_bool_t duk_is_bare_object(duk_hthread *thr, duk_idx_t idx) { - duk_hobject *obj; - duk_hobject *proto; - - DUK_ASSERT_API_ENTRY(thr); - - obj = duk_require_hobject(thr, idx); - DUK_ASSERT(obj != NULL); - - proto = DUK_HOBJECT_GET_PROTOTYPE(thr->heap, obj); - return (proto == NULL); -} - -/* - * Object finalizer - */ - -#if defined(DUK_USE_FINALIZER_SUPPORT) -/* XXX: these could be implemented as macros calling an internal function - * directly. - * XXX: same issue as with Duktape.fin: there's no way to delete the property - * now (just set it to undefined). - */ -DUK_EXTERNAL void duk_get_finalizer(duk_hthread *thr, duk_idx_t idx) { - DUK_ASSERT_API_ENTRY(thr); - - /* This get intentionally walks the inheritance chain at present, - * which matches how the effective finalizer property is also - * looked up in GC. - */ - duk_get_prop_stridx(thr, idx, DUK_STRIDX_INT_FINALIZER); -} - -DUK_EXTERNAL void duk_set_finalizer(duk_hthread *thr, duk_idx_t idx) { - duk_hobject *h; - duk_bool_t callable; - - DUK_ASSERT_API_ENTRY(thr); - - h = duk_require_hobject(thr, idx); /* Get before 'put' so that 'idx' is correct. */ - callable = duk_is_callable(thr, -1); - - /* At present finalizer is stored as a hidden Symbol, with normal - * inheritance and access control. As a result, finalizer cannot - * currently be set on a non-extensible (sealed or frozen) object. - * It might be useful to allow it. - */ - duk_put_prop_stridx(thr, idx, DUK_STRIDX_INT_FINALIZER); - - /* In addition to setting the finalizer property, keep a "have - * finalizer" flag in duk_hobject in sync so that refzero can do - * a very quick finalizer check by walking the prototype chain - * and checking the flag alone. (Note that this means that just - * setting _Finalizer on an object won't affect finalizer checks.) - * - * NOTE: if the argument is a Proxy object, this flag will be set - * on the Proxy, not the target. As a result, the target won't get - * a finalizer flag and the Proxy also won't be finalized as there's - * an explicit Proxy check in finalization now. - */ - if (callable) { - DUK_HOBJECT_SET_HAVE_FINALIZER(h); - } else { - DUK_HOBJECT_CLEAR_HAVE_FINALIZER(h); - } -} -#else /* DUK_USE_FINALIZER_SUPPORT */ -DUK_EXTERNAL void duk_get_finalizer(duk_hthread *thr, duk_idx_t idx) { - DUK_ASSERT_API_ENTRY(thr); - DUK_UNREF(idx); - DUK_ERROR_UNSUPPORTED(thr); - DUK_WO_NORETURN(return;); -} - -DUK_EXTERNAL void duk_set_finalizer(duk_hthread *thr, duk_idx_t idx) { - DUK_ASSERT_API_ENTRY(thr); - DUK_UNREF(idx); - DUK_ERROR_UNSUPPORTED(thr); - DUK_WO_NORETURN(return;); -} -#endif /* DUK_USE_FINALIZER_SUPPORT */ -#line 1 "duk_api_random.c" -/* - * Random numbers - */ - -/* #include duk_internal.h -> already included */ - -DUK_EXTERNAL duk_double_t duk_random(duk_hthread *thr) { - return (duk_double_t) duk_util_get_random_double(thr); -} -#line 1 "duk_api_stack.c" -/* - * API calls related to general value stack manipulation: resizing the value - * stack, pushing and popping values, type checking and reading values, - * coercing values, etc. - * - * Also contains internal functions (such as duk_get_tval()), defined - * in duk_api_internal.h, with semantics similar to the public API. - */ - -/* XXX: repetition of stack pre-checks -> helper or macro or inline */ -/* XXX: shared api error strings, and perhaps even throw code for rare cases? */ - -/* #include duk_internal.h -> already included */ - -/* - * Forward declarations - */ - -DUK_LOCAL_DECL duk_idx_t -duk__push_c_function_raw(duk_hthread *thr, duk_c_function func, duk_idx_t nargs, duk_uint_t flags, duk_small_uint_t proto_bidx); - -/* - * Global state for working around missing variadic macros - */ - -#if !defined(DUK_USE_VARIADIC_MACROS) -DUK_EXTERNAL const char *duk_api_global_filename = NULL; -DUK_EXTERNAL duk_int_t duk_api_global_line = 0; -#endif - -/* - * Misc helpers - */ - -DUK_LOCAL const char * const duk__symbol_type_strings[4] = { "hidden", "global", "local", "wellknown" }; - -#if !defined(DUK_USE_PACKED_TVAL) -DUK_LOCAL const duk_uint_t duk__type_from_tag[] = { - DUK_TYPE_NUMBER, DUK_TYPE_NUMBER, /* fastint */ - DUK_TYPE_UNDEFINED, DUK_TYPE_NULL, DUK_TYPE_BOOLEAN, DUK_TYPE_POINTER, DUK_TYPE_LIGHTFUNC, - DUK_TYPE_NONE, DUK_TYPE_STRING, DUK_TYPE_OBJECT, DUK_TYPE_BUFFER, -}; -DUK_LOCAL const duk_uint_t duk__type_mask_from_tag[] = { - DUK_TYPE_MASK_NUMBER, DUK_TYPE_MASK_NUMBER, /* fastint */ - DUK_TYPE_MASK_UNDEFINED, DUK_TYPE_MASK_NULL, DUK_TYPE_MASK_BOOLEAN, DUK_TYPE_MASK_POINTER, DUK_TYPE_MASK_LIGHTFUNC, - DUK_TYPE_MASK_NONE, DUK_TYPE_MASK_STRING, DUK_TYPE_MASK_OBJECT, DUK_TYPE_MASK_BUFFER, -}; -#endif /* !DUK_USE_PACKED_TVAL */ - -/* Assert that there's room for one value. */ -#define DUK__ASSERT_SPACE() \ - do { \ - DUK_ASSERT(!(thr->valstack_top >= thr->valstack_end)); \ - } while (0) - -/* Check that there's room to push one value. */ -#if defined(DUK_USE_VALSTACK_UNSAFE) -/* Faster but value stack overruns are memory unsafe. */ -#define DUK__CHECK_SPACE() DUK__ASSERT_SPACE() -#else -#define DUK__CHECK_SPACE() \ - do { \ - if (DUK_UNLIKELY(thr->valstack_top >= thr->valstack_end)) { \ - DUK_ERROR_RANGE_PUSH_BEYOND(thr); \ - } \ - } while (0) -#endif - -DUK_LOCAL duk_small_uint_t duk__get_symbol_type(duk_hstring *h) { - const duk_uint8_t *data; - duk_size_t len; - - DUK_ASSERT(h != NULL); - DUK_ASSERT(DUK_HSTRING_HAS_SYMBOL(h)); - DUK_ASSERT(DUK_HSTRING_GET_BYTELEN(h) >= 1); /* always true, symbol prefix */ - - data = (const duk_uint8_t *) DUK_HSTRING_GET_DATA(h); - len = DUK_HSTRING_GET_BYTELEN(h); - DUK_ASSERT(len >= 1); - - /* XXX: differentiate between 0x82 and 0xff (hidden vs. internal?)? */ - - if (data[0] == 0xffU) { - return DUK_SYMBOL_TYPE_HIDDEN; - } else if (data[0] == 0x82U) { - return DUK_SYMBOL_TYPE_HIDDEN; - } else if (data[0] == 0x80U) { - return DUK_SYMBOL_TYPE_GLOBAL; - } else if (data[len - 1] != 0xffU) { - return DUK_SYMBOL_TYPE_LOCAL; - } else { - return DUK_SYMBOL_TYPE_WELLKNOWN; - } -} - -DUK_LOCAL const char *duk__get_symbol_type_string(duk_hstring *h) { - duk_small_uint_t idx; - idx = duk__get_symbol_type(h); - DUK_ASSERT(idx < sizeof(duk__symbol_type_strings)); - return duk__symbol_type_strings[idx]; -} - -DUK_LOCAL_DECL duk_heaphdr *duk__get_tagged_heaphdr_raw(duk_hthread *thr, duk_idx_t idx, duk_uint_t tag); - -DUK_LOCAL duk_int_t duk__api_coerce_d2i(duk_hthread *thr, duk_idx_t idx, duk_int_t def_value, duk_bool_t require) { - duk_tval *tv; - duk_small_int_t c; - duk_double_t d; - - tv = duk_get_tval_or_unused(thr, idx); - DUK_ASSERT(tv != NULL); - - /* - * Special cases like NaN and +/- Infinity are handled explicitly - * because a plain C coercion from double to int handles these cases - * in undesirable ways. For instance, NaN may coerce to INT_MIN - * (not zero), and INT_MAX + 1 may coerce to INT_MIN (not INT_MAX). - * - * This double-to-int coercion differs from ToInteger() because it - * has a finite range (ToInteger() allows e.g. +/- Infinity). It - * also differs from ToInt32() because the INT_MIN/INT_MAX clamping - * depends on the size of the int type on the platform. In particular, - * on platforms with a 64-bit int type, the full range is allowed. - */ - -#if defined(DUK_USE_FASTINT) - if (DUK_TVAL_IS_FASTINT(tv)) { - duk_int64_t t = DUK_TVAL_GET_FASTINT(tv); -#if (DUK_INT_MAX <= 0x7fffffffL) - /* Clamping only necessary for 32-bit ints. */ - if (t < DUK_INT_MIN) { - t = DUK_INT_MIN; - } else if (t > DUK_INT_MAX) { - t = DUK_INT_MAX; - } -#endif - return (duk_int_t) t; - } -#endif - - if (DUK_TVAL_IS_NUMBER(tv)) { - d = DUK_TVAL_GET_NUMBER(tv); - c = (duk_small_int_t) DUK_FPCLASSIFY(d); - if (c == DUK_FP_NAN) { - return 0; - } else if (d < (duk_double_t) DUK_INT_MIN) { - /* covers -Infinity */ - return DUK_INT_MIN; - } else if (d > (duk_double_t) DUK_INT_MAX) { - /* covers +Infinity */ - return DUK_INT_MAX; - } else { - /* coerce towards zero */ - return (duk_int_t) d; - } - } - - if (require) { - DUK_ERROR_REQUIRE_TYPE_INDEX(thr, idx, "number", DUK_STR_NOT_NUMBER); - DUK_WO_NORETURN(return 0;); - } - - return def_value; -} - -DUK_LOCAL duk_uint_t duk__api_coerce_d2ui(duk_hthread *thr, duk_idx_t idx, duk_uint_t def_value, duk_bool_t require) { - duk_tval *tv; - duk_small_int_t c; - duk_double_t d; - - /* Same as above but for unsigned int range. */ - - tv = duk_get_tval_or_unused(thr, idx); - DUK_ASSERT(tv != NULL); - -#if defined(DUK_USE_FASTINT) - if (DUK_TVAL_IS_FASTINT(tv)) { - duk_int64_t t = DUK_TVAL_GET_FASTINT(tv); - if (t < 0) { - t = 0; - } -#if (DUK_UINT_MAX <= 0xffffffffUL) - /* Clamping only necessary for 32-bit ints. */ - else if (t > DUK_UINT_MAX) { - t = DUK_UINT_MAX; - } -#endif - return (duk_uint_t) t; - } -#endif - - if (DUK_TVAL_IS_NUMBER(tv)) { - d = DUK_TVAL_GET_NUMBER(tv); - c = (duk_small_int_t) DUK_FPCLASSIFY(d); - if (c == DUK_FP_NAN) { - return 0; - } else if (d < 0.0) { - /* covers -Infinity */ - return (duk_uint_t) 0; - } else if (d > (duk_double_t) DUK_UINT_MAX) { - /* covers +Infinity */ - return (duk_uint_t) DUK_UINT_MAX; - } else { - /* coerce towards zero */ - return (duk_uint_t) d; - } - } - - if (require) { - DUK_ERROR_REQUIRE_TYPE_INDEX(thr, idx, "number", DUK_STR_NOT_NUMBER); - DUK_WO_NORETURN(return 0;); - } - - return def_value; -} - -/* - * Stack index validation/normalization and getting a stack duk_tval ptr. - * - * These are called by many API entrypoints so the implementations must be - * fast and "inlined". - * - * There's some repetition because of this; keep the functions in sync. - */ - -DUK_EXTERNAL duk_idx_t duk_normalize_index(duk_hthread *thr, duk_idx_t idx) { - duk_uidx_t vs_size; - duk_uidx_t uidx; - - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT(DUK_INVALID_INDEX < 0); - - /* Care must be taken to avoid pointer wrapping in the index - * validation. For instance, on a 32-bit platform with 8-byte - * duk_tval the index 0x20000000UL would wrap the memory space - * once. - */ - - /* Assume value stack sizes (in elements) fits into duk_idx_t. */ - DUK_ASSERT(thr->valstack_top >= thr->valstack_bottom); - vs_size = (duk_uidx_t) (thr->valstack_top - thr->valstack_bottom); - DUK_ASSERT_DISABLE(vs_size >= 0); /* unsigned */ - - if (idx < 0) { - uidx = vs_size + (duk_uidx_t) idx; - } else { - /* since index non-negative */ - DUK_ASSERT(idx != DUK_INVALID_INDEX); - uidx = (duk_uidx_t) idx; - } - - /* DUK_INVALID_INDEX won't be accepted as a valid index. */ - DUK_ASSERT(vs_size + (duk_uidx_t) DUK_INVALID_INDEX >= vs_size); - - if (DUK_LIKELY(uidx < vs_size)) { - return (duk_idx_t) uidx; - } - return DUK_INVALID_INDEX; -} - -DUK_EXTERNAL duk_idx_t duk_require_normalize_index(duk_hthread *thr, duk_idx_t idx) { - duk_uidx_t vs_size; - duk_uidx_t uidx; - - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT(DUK_INVALID_INDEX < 0); - - DUK_ASSERT(thr->valstack_top >= thr->valstack_bottom); - vs_size = (duk_uidx_t) (thr->valstack_top - thr->valstack_bottom); - DUK_ASSERT_DISABLE(vs_size >= 0); /* unsigned */ - - if (idx < 0) { - uidx = vs_size + (duk_uidx_t) idx; - } else { - DUK_ASSERT(idx != DUK_INVALID_INDEX); - uidx = (duk_uidx_t) idx; - } - - /* DUK_INVALID_INDEX won't be accepted as a valid index. */ - DUK_ASSERT(vs_size + (duk_uidx_t) DUK_INVALID_INDEX >= vs_size); - - if (DUK_LIKELY(uidx < vs_size)) { - return (duk_idx_t) uidx; - } - DUK_ERROR_RANGE_INDEX(thr, idx); - DUK_WO_NORETURN(return 0;); -} - -DUK_INTERNAL duk_tval *duk_get_tval(duk_hthread *thr, duk_idx_t idx) { - duk_uidx_t vs_size; - duk_uidx_t uidx; - - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT(DUK_INVALID_INDEX < 0); - - DUK_ASSERT(thr->valstack_top >= thr->valstack_bottom); - vs_size = (duk_uidx_t) (thr->valstack_top - thr->valstack_bottom); - DUK_ASSERT_DISABLE(vs_size >= 0); /* unsigned */ - - if (idx < 0) { - uidx = vs_size + (duk_uidx_t) idx; - } else { - DUK_ASSERT(idx != DUK_INVALID_INDEX); - uidx = (duk_uidx_t) idx; - } - - /* DUK_INVALID_INDEX won't be accepted as a valid index. */ - DUK_ASSERT(vs_size + (duk_uidx_t) DUK_INVALID_INDEX >= vs_size); - - if (DUK_LIKELY(uidx < vs_size)) { - return thr->valstack_bottom + uidx; - } - return NULL; -} - -/* Variant of duk_get_tval() which is guaranteed to return a valid duk_tval - * pointer. When duk_get_tval() would return NULL, this variant returns a - * pointer to a duk_tval with tag DUK_TAG_UNUSED. This allows the call site - * to avoid an unnecessary NULL check which sometimes leads to better code. - * The return duk_tval is read only (at least for the UNUSED value). - */ -DUK_LOCAL const duk_tval_unused duk__const_tval_unused = DUK_TVAL_UNUSED_INITIALIZER(); - -DUK_INTERNAL duk_tval *duk_get_tval_or_unused(duk_hthread *thr, duk_idx_t idx) { - duk_tval *tv; - - DUK_ASSERT_API_ENTRY(thr); - - tv = duk_get_tval(thr, idx); - if (tv != NULL) { - return tv; - } - return (duk_tval *) DUK_LOSE_CONST(&duk__const_tval_unused); -} - -DUK_INTERNAL duk_tval *duk_require_tval(duk_hthread *thr, duk_idx_t idx) { - duk_uidx_t vs_size; - duk_uidx_t uidx; - - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT(DUK_INVALID_INDEX < 0); - - DUK_ASSERT(thr->valstack_top >= thr->valstack_bottom); - vs_size = (duk_uidx_t) (thr->valstack_top - thr->valstack_bottom); - DUK_ASSERT_DISABLE(vs_size >= 0); /* unsigned */ - - /* Use unsigned arithmetic to optimize comparison. */ - if (idx < 0) { - uidx = vs_size + (duk_uidx_t) idx; - } else { - DUK_ASSERT(idx != DUK_INVALID_INDEX); - uidx = (duk_uidx_t) idx; - } - - /* DUK_INVALID_INDEX won't be accepted as a valid index. */ - DUK_ASSERT(vs_size + (duk_uidx_t) DUK_INVALID_INDEX >= vs_size); - - if (DUK_LIKELY(uidx < vs_size)) { - return thr->valstack_bottom + uidx; - } - DUK_ERROR_RANGE_INDEX(thr, idx); - DUK_WO_NORETURN(return NULL;); -} - -/* Non-critical. */ -DUK_EXTERNAL duk_bool_t duk_is_valid_index(duk_hthread *thr, duk_idx_t idx) { - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT(DUK_INVALID_INDEX < 0); - - return (duk_normalize_index(thr, idx) >= 0); -} - -/* Non-critical. */ -DUK_EXTERNAL void duk_require_valid_index(duk_hthread *thr, duk_idx_t idx) { - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT(DUK_INVALID_INDEX < 0); - - if (DUK_UNLIKELY(duk_normalize_index(thr, idx) < 0)) { - DUK_ERROR_RANGE_INDEX(thr, idx); - DUK_WO_NORETURN(return;); - } -} - -/* - * Value stack top handling - */ - -DUK_EXTERNAL duk_idx_t duk_get_top(duk_hthread *thr) { - DUK_ASSERT_API_ENTRY(thr); - - return (duk_idx_t) (thr->valstack_top - thr->valstack_bottom); -} - -/* Internal helper to get current top but to require a minimum top value - * (TypeError if not met). - */ -DUK_INTERNAL duk_idx_t duk_get_top_require_min(duk_hthread *thr, duk_idx_t min_top) { - duk_idx_t ret; - - DUK_ASSERT_API_ENTRY(thr); - - ret = (duk_idx_t) (thr->valstack_top - thr->valstack_bottom); - if (DUK_UNLIKELY(ret < min_top)) { - DUK_ERROR_TYPE_INVALID_ARGS(thr); - DUK_WO_NORETURN(return 0;); - } - return ret; -} - -/* Set stack top within currently allocated range, but don't reallocate. - * This is performance critical especially for call handling, so whenever - * changing, profile and look at generated code. - */ -DUK_EXTERNAL void duk_set_top(duk_hthread *thr, duk_idx_t idx) { - duk_uidx_t vs_size; - duk_uidx_t vs_limit; - duk_uidx_t uidx; - duk_tval *tv; - - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT(DUK_INVALID_INDEX < 0); - - DUK_ASSERT(thr->valstack_top >= thr->valstack_bottom); - DUK_ASSERT(thr->valstack_end >= thr->valstack_bottom); - vs_size = (duk_uidx_t) (thr->valstack_top - thr->valstack_bottom); - vs_limit = (duk_uidx_t) (thr->valstack_end - thr->valstack_bottom); - - if (idx < 0) { - /* Negative indices are always within allocated stack but - * must not go below zero index. - */ - uidx = vs_size + (duk_uidx_t) idx; - } else { - /* Positive index can be higher than valstack top but must - * not go above allocated stack (equality is OK). - */ - uidx = (duk_uidx_t) idx; - } - - /* DUK_INVALID_INDEX won't be accepted as a valid index. */ - DUK_ASSERT(vs_size + (duk_uidx_t) DUK_INVALID_INDEX >= vs_size); - DUK_ASSERT(vs_size + (duk_uidx_t) DUK_INVALID_INDEX >= vs_limit); - -#if defined(DUK_USE_VALSTACK_UNSAFE) - DUK_ASSERT(uidx <= vs_limit); - DUK_UNREF(vs_limit); -#else - if (DUK_UNLIKELY(uidx > vs_limit)) { - DUK_ERROR_RANGE_INDEX(thr, idx); - DUK_WO_NORETURN(return;); - } -#endif - DUK_ASSERT(uidx <= vs_limit); - - /* Handle change in value stack top. Respect value stack - * initialization policy: 'undefined' above top. Note that - * DECREF may cause a side effect that reallocates valstack, - * so must relookup after DECREF. - */ - - if (uidx >= vs_size) { - /* Stack size increases or stays the same. */ -#if defined(DUK_USE_ASSERTIONS) - duk_uidx_t count; - - count = uidx - vs_size; - while (count != 0) { - count--; - tv = thr->valstack_top + count; - DUK_ASSERT(DUK_TVAL_IS_UNDEFINED(tv)); - } -#endif - thr->valstack_top = thr->valstack_bottom + uidx; - } else { - /* Stack size decreases. */ -#if defined(DUK_USE_REFERENCE_COUNTING) - duk_uidx_t count; - duk_tval *tv_end; - - count = vs_size - uidx; - DUK_ASSERT(count > 0); - tv = thr->valstack_top; - tv_end = tv - count; - DUK_ASSERT(tv > tv_end); /* Because count > 0. */ - do { - tv--; - DUK_ASSERT(tv >= thr->valstack_bottom); - DUK_TVAL_SET_UNDEFINED_UPDREF_NORZ(thr, tv); - } while (tv != tv_end); - thr->valstack_top = tv_end; - DUK_REFZERO_CHECK_FAST(thr); -#else /* DUK_USE_REFERENCE_COUNTING */ - duk_uidx_t count; - duk_tval *tv_end; - - count = vs_size - uidx; - tv = thr->valstack_top; - tv_end = tv - count; - DUK_ASSERT(tv > tv_end); - do { - tv--; - DUK_TVAL_SET_UNDEFINED(tv); - } while (tv != tv_end); - thr->valstack_top = tv_end; -#endif /* DUK_USE_REFERENCE_COUNTING */ - } -} - -/* Internal variant with a non-negative index and no runtime size checks. */ -#if defined(DUK_USE_PREFER_SIZE) -DUK_INTERNAL void duk_set_top_unsafe(duk_hthread *thr, duk_idx_t idx) { - DUK_ASSERT_API_ENTRY(thr); - - duk_set_top(thr, idx); -} -#else /* DUK_USE_PREFER_SIZE */ -DUK_INTERNAL void duk_set_top_unsafe(duk_hthread *thr, duk_idx_t idx) { - duk_uidx_t uidx; - duk_uidx_t vs_size; - duk_tval *tv; - - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT(thr->valstack_top >= thr->valstack_bottom); - DUK_ASSERT(thr->valstack_end >= thr->valstack_bottom); - DUK_ASSERT(idx >= 0); - DUK_ASSERT(idx <= (duk_idx_t) (thr->valstack_end - thr->valstack_bottom)); - - /* XXX: byte arithmetic */ - uidx = (duk_uidx_t) idx; - vs_size = (duk_uidx_t) (thr->valstack_top - thr->valstack_bottom); - - if (uidx >= vs_size) { - /* Stack size increases or stays the same. */ -#if defined(DUK_USE_ASSERTIONS) - duk_uidx_t count; - - count = uidx - vs_size; - while (count != 0) { - count--; - tv = thr->valstack_top + count; - DUK_ASSERT(DUK_TVAL_IS_UNDEFINED(tv)); - } -#endif - thr->valstack_top = thr->valstack_bottom + uidx; - } else { - /* Stack size decreases. */ -#if defined(DUK_USE_REFERENCE_COUNTING) - duk_uidx_t count; - duk_tval *tv_end; - - count = vs_size - uidx; - DUK_ASSERT(count > 0); - tv = thr->valstack_top; - tv_end = tv - count; - DUK_ASSERT(tv > tv_end); /* Because count > 0. */ - do { - tv--; - DUK_ASSERT(tv >= thr->valstack_bottom); - DUK_TVAL_SET_UNDEFINED_UPDREF_NORZ(thr, tv); - } while (tv != tv_end); - thr->valstack_top = tv_end; - DUK_REFZERO_CHECK_FAST(thr); -#else /* DUK_USE_REFERENCE_COUNTING */ - duk_uidx_t count; - duk_tval *tv_end; - - count = vs_size - uidx; - tv = thr->valstack_top; - tv_end = tv - count; - DUK_ASSERT(tv > tv_end); - do { - tv--; - DUK_TVAL_SET_UNDEFINED(tv); - } while (tv != tv_end); - thr->valstack_top = tv_end; -#endif /* DUK_USE_REFERENCE_COUNTING */ - } -} -#endif /* DUK_USE_PREFER_SIZE */ - -/* Internal helper: set top to 'top', and set [idx_wipe_start,top[ to - * 'undefined' (doing nothing if idx_wipe_start == top). Indices are - * positive and within value stack reserve. This is used by call handling. - */ -DUK_INTERNAL void duk_set_top_and_wipe(duk_hthread *thr, duk_idx_t top, duk_idx_t idx_wipe_start) { - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT(top >= 0); - DUK_ASSERT(idx_wipe_start >= 0); - DUK_ASSERT(idx_wipe_start <= top); - DUK_ASSERT(thr->valstack_bottom + top <= thr->valstack_end); - DUK_ASSERT(thr->valstack_bottom + idx_wipe_start <= thr->valstack_end); - - duk_set_top_unsafe(thr, idx_wipe_start); - duk_set_top_unsafe(thr, top); -} - -DUK_EXTERNAL duk_idx_t duk_get_top_index(duk_hthread *thr) { - duk_idx_t ret; - - DUK_ASSERT_API_ENTRY(thr); - - ret = (duk_idx_t) (thr->valstack_top - thr->valstack_bottom) - 1; - if (DUK_UNLIKELY(ret < 0)) { - /* Return invalid index; if caller uses this without checking - * in another API call, the index won't map to a valid stack - * entry. - */ - return DUK_INVALID_INDEX; - } - return ret; -} - -/* Internal variant: call assumes there is at least one element on the value - * stack frame; this is only asserted for. - */ -DUK_INTERNAL duk_idx_t duk_get_top_index_unsafe(duk_hthread *thr) { - duk_idx_t ret; - - DUK_ASSERT_API_ENTRY(thr); - - ret = (duk_idx_t) (thr->valstack_top - thr->valstack_bottom) - 1; - return ret; -} - -DUK_EXTERNAL duk_idx_t duk_require_top_index(duk_hthread *thr) { - duk_idx_t ret; - - DUK_ASSERT_API_ENTRY(thr); - - ret = (duk_idx_t) (thr->valstack_top - thr->valstack_bottom) - 1; - if (DUK_UNLIKELY(ret < 0)) { - DUK_ERROR_RANGE_INDEX(thr, -1); - DUK_WO_NORETURN(return 0;); - } - return ret; -} - -/* - * Value stack resizing. - * - * This resizing happens above the current "top": the value stack can be - * grown or shrunk, but the "top" is not affected. The value stack cannot - * be resized to a size below the current reserve. - * - * The low level reallocation primitive must carefully recompute all value - * stack pointers, and must also work if ALL pointers are NULL. The resize - * is quite tricky because the valstack realloc may cause a mark-and-sweep, - * which may run finalizers. Running finalizers may resize the valstack - * recursively (the same value stack we're working on). So, after realloc - * returns, we know that the valstack bottom, top, and reserve should still - * be the same (there should not be live values above the "top"), but its - * underlying size, alloc_end, and base pointer may have changed. - * - * 'new_size' is known to be <= DUK_USE_VALSTACK_LIMIT, which ensures that - * size_t and pointer arithmetic won't wrap in duk__resize_valstack(). - */ - -/* Low level valstack resize primitive, used for both grow and shrink. All - * adjustments for slack etc have already been done. Doesn't throw but does - * have allocation side effects. - */ -DUK_LOCAL DUK_COLD DUK_NOINLINE duk_bool_t duk__resize_valstack(duk_hthread *thr, duk_size_t new_size) { - duk_tval *pre_valstack; - duk_tval *pre_bottom; - duk_tval *pre_top; - duk_tval *pre_end; - duk_tval *pre_alloc_end; - duk_ptrdiff_t ptr_diff; - duk_tval *new_valstack; - duk_size_t new_alloc_size; - duk_tval *tv_prev_alloc_end; - duk_tval *p; - - DUK_HTHREAD_ASSERT_VALID(thr); - DUK_ASSERT(thr->valstack_bottom >= thr->valstack); - DUK_ASSERT(thr->valstack_top >= thr->valstack_bottom); - DUK_ASSERT(thr->valstack_end >= thr->valstack_top); - DUK_ASSERT(thr->valstack_alloc_end >= thr->valstack_end); - DUK_ASSERT((duk_size_t) (thr->valstack_top - thr->valstack) <= new_size); /* can't resize below 'top' */ - DUK_ASSERT(new_size <= DUK_USE_VALSTACK_LIMIT); /* valstack limit caller has check, prevents wrapping */ - DUK_ASSERT(new_size <= DUK_SIZE_MAX / sizeof(duk_tval)); /* specific assert for wrapping */ - - /* Pre-realloc pointer copies for asserts and debug logs. */ - pre_valstack = thr->valstack; - pre_bottom = thr->valstack_bottom; - pre_top = thr->valstack_top; - pre_end = thr->valstack_end; - pre_alloc_end = thr->valstack_alloc_end; - - DUK_UNREF(pre_valstack); - DUK_UNREF(pre_bottom); - DUK_UNREF(pre_top); - DUK_UNREF(pre_end); - DUK_UNREF(pre_alloc_end); - - /* If finalizer torture enabled, force base pointer change every time - * when it would be allowed. - */ -#if defined(DUK_USE_FINALIZER_TORTURE) - if (thr->heap->pf_prevent_count == 0) { - duk_hthread_valstack_torture_realloc(thr); - } -#endif - - /* Allocate a new valstack using DUK_REALLOC_DIRECT() to deal with - * a side effect changing the base pointer. - */ - new_alloc_size = sizeof(duk_tval) * new_size; - new_valstack = (duk_tval *) DUK_REALLOC_INDIRECT(thr->heap, duk_hthread_get_valstack_ptr, (void *) thr, new_alloc_size); - if (DUK_UNLIKELY(new_valstack == NULL)) { - /* Because new_size != 0, if condition doesn't need to be - * (new_valstack != NULL || new_size == 0). - */ - DUK_ASSERT(new_size != 0); - DUK_D(DUK_DPRINT("failed to resize valstack to %lu entries (%lu bytes)", - (unsigned long) new_size, - (unsigned long) new_alloc_size)); - return 0; - } - - /* Debug log any changes in pointer(s) by side effects. These don't - * necessarily imply any incorrect behavior, but should be rare in - * practice. - */ -#if defined(DUK_USE_DEBUG) - if (thr->valstack != pre_valstack) { - DUK_D(DUK_DPRINT("valstack base pointer changed during valstack resize: %p -> %p", - (void *) pre_valstack, - (void *) thr->valstack)); - } - if (thr->valstack_bottom != pre_bottom) { - DUK_D(DUK_DPRINT("valstack bottom pointer changed during valstack resize: %p -> %p", - (void *) pre_bottom, - (void *) thr->valstack_bottom)); - } - if (thr->valstack_top != pre_top) { - DUK_D(DUK_DPRINT("valstack top pointer changed during valstack resize: %p -> %p", - (void *) pre_top, - (void *) thr->valstack_top)); - } - if (thr->valstack_end != pre_end) { - DUK_D(DUK_DPRINT("valstack end pointer changed during valstack resize: %p -> %p", - (void *) pre_end, - (void *) thr->valstack_end)); - } - if (thr->valstack_alloc_end != pre_alloc_end) { - DUK_D(DUK_DPRINT("valstack alloc_end pointer changed during valstack resize: %p -> %p", - (void *) pre_alloc_end, - (void *) thr->valstack_alloc_end)); - } -#endif - - /* Assertions: offsets for bottom, top, and end (reserve) must not - * have changed even with side effects because they are always - * restored in unwind. For alloc_end there's no guarantee: it may - * have grown or shrunk (but remain above 'end'). - */ - DUK_ASSERT(thr->valstack_bottom - thr->valstack == pre_bottom - pre_valstack); - DUK_ASSERT(thr->valstack_top - thr->valstack == pre_top - pre_valstack); - DUK_ASSERT(thr->valstack_end - thr->valstack == pre_end - pre_valstack); - DUK_ASSERT(thr->valstack_alloc_end >= thr->valstack_end); - - /* Write new pointers. Most pointers can be handled as a pointer - * difference. - */ - ptr_diff = (duk_ptrdiff_t) ((duk_uint8_t *) new_valstack - (duk_uint8_t *) thr->valstack); - tv_prev_alloc_end = (duk_tval *) (void *) ((duk_uint8_t *) thr->valstack_alloc_end + ptr_diff); - thr->valstack = new_valstack; - thr->valstack_bottom = (duk_tval *) (void *) ((duk_uint8_t *) thr->valstack_bottom + ptr_diff); - thr->valstack_top = (duk_tval *) (void *) ((duk_uint8_t *) thr->valstack_top + ptr_diff); - thr->valstack_end = (duk_tval *) (void *) ((duk_uint8_t *) thr->valstack_end + ptr_diff); - thr->valstack_alloc_end = (duk_tval *) (void *) ((duk_uint8_t *) new_valstack + new_alloc_size); - - /* Assertions: pointer sanity after pointer updates. */ - DUK_ASSERT(thr->valstack_bottom >= thr->valstack); - DUK_ASSERT(thr->valstack_top >= thr->valstack_bottom); - DUK_ASSERT(thr->valstack_end >= thr->valstack_top); - DUK_ASSERT(thr->valstack_alloc_end >= thr->valstack_end); - - DUK_D(DUK_DPRINT("resized valstack %lu -> %lu elements (%lu -> %lu bytes): " - "base=%p -> %p, bottom=%p -> %p (%ld), top=%p -> %p (%ld), " - "end=%p -> %p (%ld), alloc_end=%p -> %p (%ld);" - " tv_prev_alloc_end=%p (-> %ld inits; <0 means shrink)", - (unsigned long) (pre_alloc_end - pre_valstack), - (unsigned long) new_size, - (unsigned long) ((duk_uint8_t *) pre_alloc_end - (duk_uint8_t *) pre_valstack), - (unsigned long) new_alloc_size, - (void *) pre_valstack, - (void *) thr->valstack, - (void *) pre_bottom, - (void *) thr->valstack_bottom, - (long) (thr->valstack_bottom - thr->valstack), - (void *) pre_top, - (void *) thr->valstack_top, - (long) (thr->valstack_top - thr->valstack), - (void *) pre_end, - (void *) thr->valstack_end, - (long) (thr->valstack_end - thr->valstack), - (void *) pre_alloc_end, - (void *) thr->valstack_alloc_end, - (long) (thr->valstack_alloc_end - thr->valstack), - (void *) tv_prev_alloc_end, - (long) (thr->valstack_alloc_end - tv_prev_alloc_end))); - - /* If allocation grew, init any new slots to 'undefined'. */ - p = tv_prev_alloc_end; - while (p < thr->valstack_alloc_end) { - /* Never executed if new size is smaller. */ - DUK_TVAL_SET_UNDEFINED(p); - p++; - } - - /* Assert for value stack initialization policy. */ -#if defined(DUK_USE_ASSERTIONS) - p = thr->valstack_top; - while (p < thr->valstack_alloc_end) { - DUK_ASSERT(DUK_TVAL_IS_UNDEFINED(p)); - p++; - } -#endif - - return 1; -} - -DUK_LOCAL DUK_COLD DUK_NOINLINE duk_bool_t duk__valstack_grow(duk_hthread *thr, duk_size_t min_bytes, duk_bool_t throw_on_error) { - duk_size_t min_size; - duk_size_t new_size; - - DUK_ASSERT(min_bytes / sizeof(duk_tval) * sizeof(duk_tval) == min_bytes); - min_size = min_bytes / sizeof(duk_tval); /* from bytes to slots */ - -#if defined(DUK_USE_VALSTACK_GROW_SHIFT) - /* New size is minimum size plus a proportional slack, e.g. shift of - * 2 means a 25% slack. - */ - new_size = min_size + (min_size >> DUK_USE_VALSTACK_GROW_SHIFT); -#else - /* New size is tight with no slack. This is sometimes preferred in - * low memory environments. - */ - new_size = min_size; -#endif - - if (DUK_UNLIKELY(new_size > DUK_USE_VALSTACK_LIMIT || new_size < min_size /*wrap*/)) { - /* Note: may be triggered even if minimal new_size would not reach the limit, - * plan limit accordingly. - */ - if (throw_on_error) { - DUK_ERROR_RANGE(thr, DUK_STR_VALSTACK_LIMIT); - DUK_WO_NORETURN(return 0;); - } - return 0; - } - - if (duk__resize_valstack(thr, new_size) == 0) { - if (throw_on_error) { - DUK_ERROR_ALLOC_FAILED(thr); - DUK_WO_NORETURN(return 0;); - } - return 0; - } - - thr->valstack_end = thr->valstack + min_size; - DUK_ASSERT(thr->valstack_alloc_end >= thr->valstack_end); - - return 1; -} - -/* Hot, inlined value stack grow check. Because value stack almost never - * grows, the actual resize call is in a NOINLINE helper. - */ -DUK_INTERNAL DUK_INLINE void duk_valstack_grow_check_throw(duk_hthread *thr, duk_size_t min_bytes) { - duk_tval *tv; - - tv = (duk_tval *) (void *) ((duk_uint8_t *) thr->valstack + min_bytes); - if (DUK_LIKELY(thr->valstack_end >= tv)) { - return; - } - if (DUK_LIKELY(thr->valstack_alloc_end >= tv)) { - /* Values in [valstack_top,valstack_alloc_end[ are initialized - * to 'undefined' so we can just move the end pointer. - */ - thr->valstack_end = tv; - return; - } - (void) duk__valstack_grow(thr, min_bytes, 1 /*throw_on_error*/); -} - -/* Hot, inlined value stack grow check which doesn't throw. */ -DUK_INTERNAL DUK_INLINE duk_bool_t duk_valstack_grow_check_nothrow(duk_hthread *thr, duk_size_t min_bytes) { - duk_tval *tv; - - tv = (duk_tval *) (void *) ((duk_uint8_t *) thr->valstack + min_bytes); - if (DUK_LIKELY(thr->valstack_end >= tv)) { - return 1; - } - if (DUK_LIKELY(thr->valstack_alloc_end >= tv)) { - thr->valstack_end = tv; - return 1; - } - return duk__valstack_grow(thr, min_bytes, 0 /*throw_on_error*/); -} - -/* Value stack shrink check, called from mark-and-sweep. */ -DUK_INTERNAL void duk_valstack_shrink_check_nothrow(duk_hthread *thr, duk_bool_t snug) { - duk_size_t alloc_bytes; - duk_size_t reserve_bytes; - duk_size_t shrink_bytes; - - alloc_bytes = (duk_size_t) ((duk_uint8_t *) thr->valstack_alloc_end - (duk_uint8_t *) thr->valstack); - reserve_bytes = (duk_size_t) ((duk_uint8_t *) thr->valstack_end - (duk_uint8_t *) thr->valstack); - DUK_ASSERT(alloc_bytes >= reserve_bytes); - - /* We're free to shrink the value stack allocation down to - * reserve_bytes but not more. If 'snug' (emergency GC) - * shrink whatever we can. Otherwise only shrink if the new - * size would be considerably smaller. - */ - -#if defined(DUK_USE_VALSTACK_SHRINK_CHECK_SHIFT) - if (snug) { - shrink_bytes = reserve_bytes; - } else { - duk_size_t proportion, slack; - - /* Require that value stack shrinks by at least X% of its - * current size. For example, shift of 2 means at least - * 25%. The proportion is computed as bytes and may not - * be a multiple of sizeof(duk_tval); that's OK here. - */ - proportion = alloc_bytes >> DUK_USE_VALSTACK_SHRINK_CHECK_SHIFT; - if (alloc_bytes - reserve_bytes < proportion) { - /* Too little would be freed, do nothing. */ - return; - } - - /* Keep a slack after shrinking. The slack is again a - * proportion of the current size (the proportion should - * of course be smaller than the check proportion above). - */ -#if defined(DUK_USE_VALSTACK_SHRINK_SLACK_SHIFT) - DUK_ASSERT(DUK_USE_VALSTACK_SHRINK_SLACK_SHIFT > DUK_USE_VALSTACK_SHRINK_CHECK_SHIFT); - slack = alloc_bytes >> DUK_USE_VALSTACK_SHRINK_SLACK_SHIFT; -#else - slack = 0; -#endif - shrink_bytes = reserve_bytes + slack / sizeof(duk_tval) * sizeof(duk_tval); /* multiple of duk_tval */ - } -#else /* DUK_USE_VALSTACK_SHRINK_CHECK_SHIFT */ - /* Always snug, useful in some low memory environments. */ - DUK_UNREF(snug); - shrink_bytes = reserve_bytes; -#endif /* DUK_USE_VALSTACK_SHRINK_CHECK_SHIFT */ - - DUK_D(DUK_DPRINT("valstack shrink check: alloc_bytes=%ld, reserve_bytes=%ld, shrink_bytes=%ld (unvalidated)", - (long) alloc_bytes, - (long) reserve_bytes, - (long) shrink_bytes)); - DUK_ASSERT(shrink_bytes >= reserve_bytes); - if (shrink_bytes >= alloc_bytes) { - /* Skip if shrink target is same as current one (or higher, - * though that shouldn't happen in practice). - */ - return; - } - DUK_ASSERT(shrink_bytes / sizeof(duk_tval) * sizeof(duk_tval) == shrink_bytes); - - DUK_D(DUK_DPRINT("valstack shrink check: decided to shrink, snug: %ld", (long) snug)); - - duk__resize_valstack(thr, shrink_bytes / sizeof(duk_tval)); -} - -DUK_EXTERNAL duk_bool_t duk_check_stack(duk_hthread *thr, duk_idx_t extra) { - duk_size_t min_new_bytes; - - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT(thr != NULL); - - if (DUK_UNLIKELY(extra < 0 || extra > DUK_USE_VALSTACK_LIMIT)) { - if (extra < 0) { - /* Clamping to zero makes the API more robust to calling code - * calculation errors. - */ - extra = 0; - } else { - /* Cause grow check to fail without wrapping arithmetic. */ - extra = DUK_USE_VALSTACK_LIMIT; - } - } - - min_new_bytes = (duk_size_t) ((duk_uint8_t *) thr->valstack_top - (duk_uint8_t *) thr->valstack) + - sizeof(duk_tval) * ((duk_size_t) extra + DUK_VALSTACK_INTERNAL_EXTRA); - return duk_valstack_grow_check_nothrow(thr, min_new_bytes); -} - -DUK_EXTERNAL void duk_require_stack(duk_hthread *thr, duk_idx_t extra) { - duk_size_t min_new_bytes; - - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT(thr != NULL); - - if (DUK_UNLIKELY(extra < 0 || extra > DUK_USE_VALSTACK_LIMIT)) { - if (extra < 0) { - /* Clamping to zero makes the API more robust to calling code - * calculation errors. - */ - extra = 0; - } else { - /* Cause grow check to fail without wrapping arithmetic. */ - extra = DUK_USE_VALSTACK_LIMIT; - } - } - - min_new_bytes = (duk_size_t) ((duk_uint8_t *) thr->valstack_top - (duk_uint8_t *) thr->valstack) + - sizeof(duk_tval) * ((duk_size_t) extra + DUK_VALSTACK_INTERNAL_EXTRA); - duk_valstack_grow_check_throw(thr, min_new_bytes); -} - -DUK_EXTERNAL duk_bool_t duk_check_stack_top(duk_hthread *thr, duk_idx_t top) { - duk_size_t min_new_bytes; - - DUK_ASSERT_API_ENTRY(thr); - - if (DUK_UNLIKELY(top < 0 || top > DUK_USE_VALSTACK_LIMIT)) { - if (top < 0) { - /* Clamping to zero makes the API more robust to calling code - * calculation errors. - */ - top = 0; - } else { - /* Cause grow check to fail without wrapping arithmetic. */ - top = DUK_USE_VALSTACK_LIMIT; - } - } - - DUK_ASSERT(top >= 0); - min_new_bytes = (duk_size_t) ((duk_uint8_t *) thr->valstack_bottom - (duk_uint8_t *) thr->valstack) + - sizeof(duk_tval) * ((duk_size_t) top + DUK_VALSTACK_INTERNAL_EXTRA); - return duk_valstack_grow_check_nothrow(thr, min_new_bytes); -} - -DUK_EXTERNAL void duk_require_stack_top(duk_hthread *thr, duk_idx_t top) { - duk_size_t min_new_bytes; - - DUK_ASSERT_API_ENTRY(thr); - - if (DUK_UNLIKELY(top < 0 || top > DUK_USE_VALSTACK_LIMIT)) { - if (top < 0) { - /* Clamping to zero makes the API more robust to calling code - * calculation errors. - */ - top = 0; - } else { - /* Cause grow check to fail without wrapping arithmetic. */ - top = DUK_USE_VALSTACK_LIMIT; - } - } - - DUK_ASSERT(top >= 0); - min_new_bytes = (duk_size_t) ((duk_uint8_t *) thr->valstack_bottom - (duk_uint8_t *) thr->valstack) + - sizeof(duk_tval) * ((duk_size_t) top + DUK_VALSTACK_INTERNAL_EXTRA); - duk_valstack_grow_check_throw(thr, min_new_bytes); -} - -/* - * Basic stack manipulation: swap, dup, insert, replace, etc - */ - -DUK_EXTERNAL void duk_swap(duk_hthread *thr, duk_idx_t idx1, duk_idx_t idx2) { - duk_tval *tv1; - duk_tval *tv2; - duk_tval tv_tmp; - - DUK_ASSERT_API_ENTRY(thr); - - tv1 = duk_require_tval(thr, idx1); - DUK_ASSERT(tv1 != NULL); - tv2 = duk_require_tval(thr, idx2); - DUK_ASSERT(tv2 != NULL); - - /* If tv1==tv2 this is a NOP, no check is needed */ - DUK_TVAL_SET_TVAL(&tv_tmp, tv1); - DUK_TVAL_SET_TVAL(tv1, tv2); - DUK_TVAL_SET_TVAL(tv2, &tv_tmp); -} - -DUK_EXTERNAL void duk_swap_top(duk_hthread *thr, duk_idx_t idx) { - DUK_ASSERT_API_ENTRY(thr); - - duk_swap(thr, idx, -1); -} - -DUK_EXTERNAL void duk_dup(duk_hthread *thr, duk_idx_t from_idx) { - duk_tval *tv_from; - duk_tval *tv_to; - - DUK_ASSERT_API_ENTRY(thr); - DUK__CHECK_SPACE(); - - tv_from = duk_require_tval(thr, from_idx); - tv_to = thr->valstack_top++; - DUK_ASSERT(tv_from != NULL); - DUK_ASSERT(tv_to != NULL); - DUK_TVAL_SET_TVAL(tv_to, tv_from); - DUK_TVAL_INCREF(thr, tv_to); /* no side effects */ -} - -DUK_EXTERNAL void duk_dup_top(duk_hthread *thr) { -#if defined(DUK_USE_PREFER_SIZE) - duk_dup(thr, -1); -#else - duk_tval *tv_from; - duk_tval *tv_to; - - DUK_ASSERT_API_ENTRY(thr); - DUK__CHECK_SPACE(); - - if (DUK_UNLIKELY(thr->valstack_top - thr->valstack_bottom <= 0)) { - DUK_ERROR_RANGE_INDEX(thr, -1); - DUK_WO_NORETURN(return;); - } - tv_from = thr->valstack_top - 1; - tv_to = thr->valstack_top++; - DUK_ASSERT(tv_from != NULL); - DUK_ASSERT(tv_to != NULL); - DUK_TVAL_SET_TVAL(tv_to, tv_from); - DUK_TVAL_INCREF(thr, tv_to); /* no side effects */ -#endif -} - -DUK_INTERNAL void duk_dup_0(duk_hthread *thr) { - DUK_ASSERT_API_ENTRY(thr); - duk_dup(thr, 0); -} -DUK_INTERNAL void duk_dup_1(duk_hthread *thr) { - DUK_ASSERT_API_ENTRY(thr); - duk_dup(thr, 1); -} -DUK_INTERNAL void duk_dup_2(duk_hthread *thr) { - DUK_ASSERT_API_ENTRY(thr); - duk_dup(thr, 2); -} -DUK_INTERNAL void duk_dup_m2(duk_hthread *thr) { - DUK_ASSERT_API_ENTRY(thr); - duk_dup(thr, -2); -} -DUK_INTERNAL void duk_dup_m3(duk_hthread *thr) { - DUK_ASSERT_API_ENTRY(thr); - duk_dup(thr, -3); -} -DUK_INTERNAL void duk_dup_m4(duk_hthread *thr) { - DUK_ASSERT_API_ENTRY(thr); - duk_dup(thr, -4); -} - -DUK_EXTERNAL void duk_insert(duk_hthread *thr, duk_idx_t to_idx) { - duk_tval *p; - duk_tval *q; - duk_tval tv_tmp; - duk_size_t nbytes; - - DUK_ASSERT_API_ENTRY(thr); - - p = duk_require_tval(thr, to_idx); - DUK_ASSERT(p != NULL); - q = duk_require_tval(thr, -1); - DUK_ASSERT(q != NULL); - - DUK_ASSERT(q >= p); - - /* nbytes - * <---------> - * [ ... | p | x | x | q ] - * => [ ... | q | p | x | x ] - */ - - nbytes = (duk_size_t) (((duk_uint8_t *) q) - ((duk_uint8_t *) p)); - - DUK_DDD(DUK_DDDPRINT("duk_insert: to_idx=%ld, p=%p, q=%p, nbytes=%lu", - (long) to_idx, - (void *) p, - (void *) q, - (unsigned long) nbytes)); - - /* No net refcount changes. No need to special case nbytes == 0 - * (p == q). - */ - DUK_TVAL_SET_TVAL(&tv_tmp, q); - duk_memmove((void *) (p + 1), (const void *) p, (size_t) nbytes); - DUK_TVAL_SET_TVAL(p, &tv_tmp); -} - -DUK_INTERNAL void duk_insert_undefined(duk_hthread *thr, duk_idx_t idx) { - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT(idx >= 0); /* Doesn't support negative indices. */ - - duk_push_undefined(thr); - duk_insert(thr, idx); -} - -DUK_INTERNAL void duk_insert_undefined_n(duk_hthread *thr, duk_idx_t idx, duk_idx_t count) { - duk_tval *tv, *tv_end; - - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT(idx >= 0); /* Doesn't support negative indices or count. */ - DUK_ASSERT(count >= 0); - - tv = duk_reserve_gap(thr, idx, count); - tv_end = tv + count; - while (tv != tv_end) { - DUK_TVAL_SET_UNDEFINED(tv); - tv++; - } -} - -DUK_EXTERNAL void duk_pull(duk_hthread *thr, duk_idx_t from_idx) { - duk_tval *p; - duk_tval *q; - duk_tval tv_tmp; - duk_size_t nbytes; - - DUK_ASSERT_API_ENTRY(thr); - - /* nbytes - * <---------> - * [ ... | x | x | p | y | y | q ] - * => [ ... | x | x | y | y | q | p ] - */ - - p = duk_require_tval(thr, from_idx); - DUK_ASSERT(p != NULL); - q = duk_require_tval(thr, -1); - DUK_ASSERT(q != NULL); - - DUK_ASSERT(q >= p); - - nbytes = (duk_size_t) (((duk_uint8_t *) q) - ((duk_uint8_t *) p)); - - DUK_DDD(DUK_DDDPRINT("duk_pull: from_idx=%ld, p=%p, q=%p, nbytes=%lu", - (long) from_idx, - (void *) p, - (void *) q, - (unsigned long) nbytes)); - - /* No net refcount changes. No need to special case nbytes == 0 - * (p == q). - */ - DUK_TVAL_SET_TVAL(&tv_tmp, p); - duk_memmove((void *) p, (const void *) (p + 1), (size_t) nbytes); - DUK_TVAL_SET_TVAL(q, &tv_tmp); -} - -DUK_EXTERNAL void duk_replace(duk_hthread *thr, duk_idx_t to_idx) { - duk_tval *tv1; - duk_tval *tv2; - duk_tval tv_tmp; - - DUK_ASSERT_API_ENTRY(thr); - - tv1 = duk_require_tval(thr, -1); - DUK_ASSERT(tv1 != NULL); - tv2 = duk_require_tval(thr, to_idx); - DUK_ASSERT(tv2 != NULL); - - /* For tv1 == tv2, both pointing to stack top, the end result - * is same as duk_pop(thr). - */ - DUK_TVAL_SET_TVAL(&tv_tmp, tv2); - DUK_TVAL_SET_TVAL(tv2, tv1); - DUK_TVAL_SET_UNDEFINED(tv1); - thr->valstack_top--; - DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */ -} - -DUK_EXTERNAL void duk_copy(duk_hthread *thr, duk_idx_t from_idx, duk_idx_t to_idx) { - duk_tval *tv1; - duk_tval *tv2; - - DUK_ASSERT_API_ENTRY(thr); - - tv1 = duk_require_tval(thr, from_idx); - DUK_ASSERT(tv1 != NULL); - tv2 = duk_require_tval(thr, to_idx); - DUK_ASSERT(tv2 != NULL); - - /* For tv1 == tv2, this is a no-op (no explicit check needed). */ - DUK_TVAL_SET_TVAL_UPDREF(thr, tv2, tv1); /* side effects */ -} - -DUK_EXTERNAL void duk_remove(duk_hthread *thr, duk_idx_t idx) { - duk_tval *p; - duk_tval *q; -#if defined(DUK_USE_REFERENCE_COUNTING) - duk_tval tv_tmp; -#endif - duk_size_t nbytes; - - DUK_ASSERT_API_ENTRY(thr); - - p = duk_require_tval(thr, idx); - DUK_ASSERT(p != NULL); - q = duk_require_tval(thr, -1); - DUK_ASSERT(q != NULL); - - DUK_ASSERT(q >= p); - - /* nbytes zero size case - * <---------> - * [ ... | p | x | x | q ] [ ... | p==q ] - * => [ ... | x | x | q ] [ ... ] - */ - -#if defined(DUK_USE_REFERENCE_COUNTING) - /* use a temp: decref only when valstack reachable values are correct */ - DUK_TVAL_SET_TVAL(&tv_tmp, p); -#endif - - nbytes = (duk_size_t) (((duk_uint8_t *) q) - ((duk_uint8_t *) p)); /* Note: 'q' is top-1 */ - duk_memmove((void *) p, (const void *) (p + 1), (size_t) nbytes); - - DUK_TVAL_SET_UNDEFINED(q); - thr->valstack_top--; - -#if defined(DUK_USE_REFERENCE_COUNTING) - DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */ -#endif -} - -DUK_INTERNAL void duk_remove_unsafe(duk_hthread *thr, duk_idx_t idx) { - DUK_ASSERT_API_ENTRY(thr); - - duk_remove(thr, idx); /* XXX: no optimization for now */ -} - -DUK_INTERNAL void duk_remove_m2(duk_hthread *thr) { - DUK_ASSERT_API_ENTRY(thr); - - duk_remove(thr, -2); -} - -DUK_INTERNAL void duk_remove_n(duk_hthread *thr, duk_idx_t idx, duk_idx_t count) { -#if defined(DUK_USE_PREFER_SIZE) - /* XXX: maybe too slow even when preferring size? */ - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT(count >= 0); - DUK_ASSERT(idx >= 0); - - while (count-- > 0) { - duk_remove(thr, idx); - } -#else /* DUK_USE_PREFER_SIZE */ - duk_tval *tv_src; - duk_tval *tv_dst; - duk_tval *tv_newtop; - duk_tval *tv; - duk_size_t bytes; - - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT(count >= 0); - DUK_ASSERT(idx >= 0); - - tv_dst = thr->valstack_bottom + idx; - DUK_ASSERT(tv_dst <= thr->valstack_top); - tv_src = tv_dst + count; - DUK_ASSERT(tv_src <= thr->valstack_top); - bytes = (duk_size_t) ((duk_uint8_t *) thr->valstack_top - (duk_uint8_t *) tv_src); - - for (tv = tv_dst; tv < tv_src; tv++) { - DUK_TVAL_DECREF_NORZ(thr, tv); - } - - duk_memmove((void *) tv_dst, (const void *) tv_src, bytes); - - tv_newtop = thr->valstack_top - count; - for (tv = tv_newtop; tv < thr->valstack_top; tv++) { - DUK_TVAL_SET_UNDEFINED(tv); - } - thr->valstack_top = tv_newtop; - - /* When not preferring size, only NORZ macros are used; caller - * is expected to DUK_REFZERO_CHECK(). - */ -#endif /* DUK_USE_PREFER_SIZE */ -} - -DUK_INTERNAL void duk_remove_n_unsafe(duk_hthread *thr, duk_idx_t idx, duk_idx_t count) { - DUK_ASSERT_API_ENTRY(thr); - - duk_remove_n(thr, idx, count); /* XXX: no optimization for now */ -} - -/* - * Stack slice primitives - */ - -DUK_EXTERNAL void duk_xcopymove_raw(duk_hthread *to_thr, duk_hthread *from_thr, duk_idx_t count, duk_bool_t is_copy) { - void *src; - duk_size_t nbytes; - duk_tval *p; - duk_tval *q; - - /* XXX: several pointer comparison issues here */ - - DUK_ASSERT_API_ENTRY(to_thr); - DUK_CTX_ASSERT_VALID(to_thr); - DUK_CTX_ASSERT_VALID(from_thr); - DUK_ASSERT(to_thr->heap == from_thr->heap); - - if (DUK_UNLIKELY(to_thr == from_thr)) { - DUK_ERROR_TYPE(to_thr, DUK_STR_INVALID_CONTEXT); - DUK_WO_NORETURN(return;); - } - if (DUK_UNLIKELY((duk_uidx_t) count > (duk_uidx_t) DUK_USE_VALSTACK_LIMIT)) { - /* Maximum value check ensures 'nbytes' won't wrap below. - * Also handles negative count. - */ - DUK_ERROR_RANGE_INVALID_COUNT(to_thr); - DUK_WO_NORETURN(return;); - } - DUK_ASSERT(count >= 0); - - nbytes = sizeof(duk_tval) * (duk_size_t) count; - if (DUK_UNLIKELY(nbytes == 0)) { - return; - } - DUK_ASSERT(to_thr->valstack_top <= to_thr->valstack_end); - if (DUK_UNLIKELY((duk_size_t) ((duk_uint8_t *) to_thr->valstack_end - (duk_uint8_t *) to_thr->valstack_top) < nbytes)) { - DUK_ERROR_RANGE_PUSH_BEYOND(to_thr); - DUK_WO_NORETURN(return;); - } - src = (void *) ((duk_uint8_t *) from_thr->valstack_top - nbytes); - if (DUK_UNLIKELY(src < (void *) from_thr->valstack_bottom)) { - DUK_ERROR_RANGE_INVALID_COUNT(to_thr); - DUK_WO_NORETURN(return;); - } - - /* Copy values (no overlap even if to_thr == from_thr; that's not - * allowed now anyway). - */ - DUK_ASSERT(nbytes > 0); - duk_memcpy((void *) to_thr->valstack_top, (const void *) src, (size_t) nbytes); - - p = to_thr->valstack_top; - to_thr->valstack_top = (duk_tval *) (void *) (((duk_uint8_t *) p) + nbytes); - - if (is_copy) { - /* Incref copies, keep originals. */ - q = to_thr->valstack_top; - while (p < q) { - DUK_TVAL_INCREF(to_thr, p); /* no side effects */ - p++; - } - } else { - /* No net refcount change. */ - p = from_thr->valstack_top; - q = (duk_tval *) (void *) (((duk_uint8_t *) p) - nbytes); - from_thr->valstack_top = q; - - while (p > q) { - p--; - DUK_TVAL_SET_UNDEFINED(p); - /* XXX: fast primitive to set a bunch of values to UNDEFINED */ - } - } -} - -/* Internal helper: reserve a gap of 'count' elements at 'idx_base' and return a - * pointer to the gap. Values in the gap are garbage and MUST be initialized by - * the caller before any side effects may occur. The caller must ensure there's - * enough stack reserve for 'count' values. - */ -DUK_INTERNAL duk_tval *duk_reserve_gap(duk_hthread *thr, duk_idx_t idx_base, duk_idx_t count) { - duk_tval *tv_src; - duk_tval *tv_dst; - duk_size_t gap_bytes; - duk_size_t copy_bytes; - - /* Caller is responsible for ensuring there's enough preallocated - * value stack. - */ - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT(count >= 0); - DUK_ASSERT((duk_size_t) (thr->valstack_end - thr->valstack_top) >= (duk_size_t) count); - - tv_src = thr->valstack_bottom + idx_base; - gap_bytes = (duk_size_t) count * sizeof(duk_tval); - tv_dst = (duk_tval *) (void *) ((duk_uint8_t *) tv_src + gap_bytes); - copy_bytes = (duk_size_t) ((duk_uint8_t *) thr->valstack_top - (duk_uint8_t *) tv_src); - thr->valstack_top = (duk_tval *) (void *) ((duk_uint8_t *) thr->valstack_top + gap_bytes); - duk_memmove((void *) tv_dst, (const void *) tv_src, copy_bytes); - - /* Values in the gap are left as garbage: caller must fill them in - * and INCREF them before any side effects. - */ - return tv_src; -} - -/* - * Get/opt/require - */ - -DUK_EXTERNAL void duk_require_undefined(duk_hthread *thr, duk_idx_t idx) { - duk_tval *tv; - - DUK_ASSERT_API_ENTRY(thr); - - tv = duk_get_tval_or_unused(thr, idx); - DUK_ASSERT(tv != NULL); - if (DUK_UNLIKELY(!DUK_TVAL_IS_UNDEFINED(tv))) { - DUK_ERROR_REQUIRE_TYPE_INDEX(thr, idx, "undefined", DUK_STR_NOT_UNDEFINED); - DUK_WO_NORETURN(return;); - } -} - -DUK_EXTERNAL void duk_require_null(duk_hthread *thr, duk_idx_t idx) { - duk_tval *tv; - - DUK_ASSERT_API_ENTRY(thr); - - tv = duk_get_tval_or_unused(thr, idx); - DUK_ASSERT(tv != NULL); - if (DUK_UNLIKELY(!DUK_TVAL_IS_NULL(tv))) { - DUK_ERROR_REQUIRE_TYPE_INDEX(thr, idx, "null", DUK_STR_NOT_NULL); - DUK_WO_NORETURN(return;); - } -} - -DUK_LOCAL DUK_ALWAYS_INLINE duk_bool_t duk__get_boolean_raw(duk_hthread *thr, duk_idx_t idx, duk_bool_t def_value) { - duk_bool_t ret; - duk_tval *tv; - - DUK_CTX_ASSERT_VALID(thr); - - tv = duk_get_tval_or_unused(thr, idx); - DUK_ASSERT(tv != NULL); - if (DUK_TVAL_IS_BOOLEAN(tv)) { - ret = DUK_TVAL_GET_BOOLEAN(tv); - DUK_ASSERT(ret == 0 || ret == 1); - } else { - ret = def_value; - /* Not guaranteed to be 0 or 1. */ - } - - return ret; -} - -DUK_EXTERNAL duk_bool_t duk_get_boolean(duk_hthread *thr, duk_idx_t idx) { - DUK_ASSERT_API_ENTRY(thr); - - return duk__get_boolean_raw(thr, idx, 0); /* default: false */ -} - -DUK_EXTERNAL duk_bool_t duk_get_boolean_default(duk_hthread *thr, duk_idx_t idx, duk_bool_t def_value) { - DUK_ASSERT_API_ENTRY(thr); - - return duk__get_boolean_raw(thr, idx, def_value); -} - -DUK_EXTERNAL duk_bool_t duk_require_boolean(duk_hthread *thr, duk_idx_t idx) { - duk_tval *tv; - duk_bool_t ret; - - DUK_ASSERT_API_ENTRY(thr); - - tv = duk_get_tval_or_unused(thr, idx); - DUK_ASSERT(tv != NULL); - if (DUK_LIKELY(DUK_TVAL_IS_BOOLEAN(tv))) { - ret = DUK_TVAL_GET_BOOLEAN(tv); - DUK_ASSERT(ret == 0 || ret == 1); - return ret; - } else { - DUK_ERROR_REQUIRE_TYPE_INDEX(thr, idx, "boolean", DUK_STR_NOT_BOOLEAN); - DUK_WO_NORETURN(return 0;); - } -} - -DUK_EXTERNAL duk_bool_t duk_opt_boolean(duk_hthread *thr, duk_idx_t idx, duk_bool_t def_value) { - DUK_ASSERT_API_ENTRY(thr); - - if (duk_check_type_mask(thr, idx, DUK_TYPE_MASK_NONE | DUK_TYPE_MASK_UNDEFINED)) { - return def_value; - } - return duk_require_boolean(thr, idx); -} - -DUK_LOCAL DUK_ALWAYS_INLINE duk_double_t duk__get_number_raw(duk_hthread *thr, duk_idx_t idx, duk_double_t def_value) { - duk_double_union ret; - duk_tval *tv; - - DUK_CTX_ASSERT_VALID(thr); - - tv = duk_get_tval_or_unused(thr, idx); - DUK_ASSERT(tv != NULL); -#if defined(DUK_USE_FASTINT) - if (DUK_TVAL_IS_FASTINT(tv)) { - ret.d = (duk_double_t) DUK_TVAL_GET_FASTINT(tv); /* XXX: cast trick */ - } else -#endif - if (DUK_TVAL_IS_DOUBLE(tv)) { - /* When using packed duk_tval, number must be in NaN-normalized form - * for it to be a duk_tval, so no need to normalize. NOP for unpacked - * duk_tval. - */ - ret.d = DUK_TVAL_GET_DOUBLE(tv); - DUK_ASSERT(DUK_DBLUNION_IS_NORMALIZED(&ret)); - } else { - ret.d = def_value; - /* Default value (including NaN) may not be normalized. */ - } - - return ret.d; -} - -DUK_EXTERNAL duk_double_t duk_get_number(duk_hthread *thr, duk_idx_t idx) { - DUK_ASSERT_API_ENTRY(thr); - return duk__get_number_raw(thr, idx, DUK_DOUBLE_NAN); /* default: NaN */ -} - -DUK_EXTERNAL duk_double_t duk_get_number_default(duk_hthread *thr, duk_idx_t idx, duk_double_t def_value) { - DUK_ASSERT_API_ENTRY(thr); - return duk__get_number_raw(thr, idx, def_value); -} - -DUK_EXTERNAL duk_double_t duk_require_number(duk_hthread *thr, duk_idx_t idx) { - duk_tval *tv; - duk_double_union ret; - - DUK_ASSERT_API_ENTRY(thr); - - tv = duk_get_tval_or_unused(thr, idx); - DUK_ASSERT(tv != NULL); - if (DUK_UNLIKELY(!DUK_TVAL_IS_NUMBER(tv))) { - DUK_ERROR_REQUIRE_TYPE_INDEX(thr, idx, "number", DUK_STR_NOT_NUMBER); - DUK_WO_NORETURN(return 0.0;); - } - - ret.d = DUK_TVAL_GET_NUMBER(tv); - - /* When using packed duk_tval, number must be in NaN-normalized form - * for it to be a duk_tval, so no need to normalize. NOP for unpacked - * duk_tval. - */ - DUK_ASSERT(DUK_DBLUNION_IS_NORMALIZED(&ret)); - return ret.d; -} - -DUK_EXTERNAL duk_double_t duk_opt_number(duk_hthread *thr, duk_idx_t idx, duk_double_t def_value) { - DUK_ASSERT_API_ENTRY(thr); - - if (duk_check_type_mask(thr, idx, DUK_TYPE_MASK_NONE | DUK_TYPE_MASK_UNDEFINED)) { - /* User provided default is not NaN normalized. */ - return def_value; - } - return duk_require_number(thr, idx); -} - -DUK_EXTERNAL duk_int_t duk_get_int(duk_hthread *thr, duk_idx_t idx) { - DUK_ASSERT_API_ENTRY(thr); - - return (duk_int_t) duk__api_coerce_d2i(thr, idx, 0 /*def_value*/, 0 /*require*/); -} - -DUK_EXTERNAL duk_uint_t duk_get_uint(duk_hthread *thr, duk_idx_t idx) { - DUK_ASSERT_API_ENTRY(thr); - - return (duk_uint_t) duk__api_coerce_d2ui(thr, idx, 0 /*def_value*/, 0 /*require*/); -} - -DUK_EXTERNAL duk_int_t duk_get_int_default(duk_hthread *thr, duk_idx_t idx, duk_int_t def_value) { - DUK_ASSERT_API_ENTRY(thr); - - return (duk_int_t) duk__api_coerce_d2i(thr, idx, def_value, 0 /*require*/); -} - -DUK_EXTERNAL duk_uint_t duk_get_uint_default(duk_hthread *thr, duk_idx_t idx, duk_uint_t def_value) { - DUK_ASSERT_API_ENTRY(thr); - - return (duk_uint_t) duk__api_coerce_d2ui(thr, idx, def_value, 0 /*require*/); -} - -DUK_EXTERNAL duk_int_t duk_require_int(duk_hthread *thr, duk_idx_t idx) { - DUK_ASSERT_API_ENTRY(thr); - - return (duk_int_t) duk__api_coerce_d2i(thr, idx, 0 /*def_value*/, 1 /*require*/); -} - -DUK_EXTERNAL duk_uint_t duk_require_uint(duk_hthread *thr, duk_idx_t idx) { - DUK_ASSERT_API_ENTRY(thr); - - return (duk_uint_t) duk__api_coerce_d2ui(thr, idx, 0 /*def_value*/, 1 /*require*/); -} - -DUK_EXTERNAL duk_int_t duk_opt_int(duk_hthread *thr, duk_idx_t idx, duk_int_t def_value) { - DUK_ASSERT_API_ENTRY(thr); - - if (duk_check_type_mask(thr, idx, DUK_TYPE_MASK_NONE | DUK_TYPE_MASK_UNDEFINED)) { - return def_value; - } - return duk_require_int(thr, idx); -} - -DUK_EXTERNAL duk_uint_t duk_opt_uint(duk_hthread *thr, duk_idx_t idx, duk_uint_t def_value) { - DUK_ASSERT_API_ENTRY(thr); - - if (duk_check_type_mask(thr, idx, DUK_TYPE_MASK_NONE | DUK_TYPE_MASK_UNDEFINED)) { - return def_value; - } - return duk_require_uint(thr, idx); -} - -DUK_EXTERNAL const char *duk_get_lstring(duk_hthread *thr, duk_idx_t idx, duk_size_t *out_len) { - duk_hstring *h; - const char *ret; - duk_size_t len; - - DUK_ASSERT_API_ENTRY(thr); - - h = duk_get_hstring(thr, idx); - if (h != NULL) { - len = DUK_HSTRING_GET_BYTELEN(h); - ret = (const char *) DUK_HSTRING_GET_DATA(h); - } else { - len = 0; - ret = NULL; - } - - if (out_len != NULL) { - *out_len = len; - } - return ret; -} - -DUK_EXTERNAL const char *duk_require_lstring(duk_hthread *thr, duk_idx_t idx, duk_size_t *out_len) { - duk_hstring *h; - - DUK_ASSERT_API_ENTRY(thr); - - h = duk_require_hstring(thr, idx); - DUK_ASSERT(h != NULL); - if (out_len) { - *out_len = DUK_HSTRING_GET_BYTELEN(h); - } - return (const char *) DUK_HSTRING_GET_DATA(h); -} - -DUK_INTERNAL const char *duk_require_lstring_notsymbol(duk_hthread *thr, duk_idx_t idx, duk_size_t *out_len) { - duk_hstring *h; - - DUK_ASSERT_API_ENTRY(thr); - - h = duk_require_hstring_notsymbol(thr, idx); - DUK_ASSERT(h != NULL); - if (out_len) { - *out_len = DUK_HSTRING_GET_BYTELEN(h); - } - return (const char *) DUK_HSTRING_GET_DATA(h); -} - -DUK_EXTERNAL const char *duk_get_string(duk_hthread *thr, duk_idx_t idx) { - duk_hstring *h; - - DUK_ASSERT_API_ENTRY(thr); - - h = duk_get_hstring(thr, idx); - if (h != NULL) { - return (const char *) DUK_HSTRING_GET_DATA(h); - } else { - return NULL; - } -} - -DUK_EXTERNAL const char *duk_opt_lstring(duk_hthread *thr, - duk_idx_t idx, - duk_size_t *out_len, - const char *def_ptr, - duk_size_t def_len) { - DUK_ASSERT_API_ENTRY(thr); - - if (duk_check_type_mask(thr, idx, DUK_TYPE_MASK_NONE | DUK_TYPE_MASK_UNDEFINED)) { - if (out_len != NULL) { - *out_len = def_len; - } - return def_ptr; - } - return duk_require_lstring(thr, idx, out_len); -} - -DUK_EXTERNAL const char *duk_opt_string(duk_hthread *thr, duk_idx_t idx, const char *def_ptr) { - DUK_ASSERT_API_ENTRY(thr); - - if (duk_check_type_mask(thr, idx, DUK_TYPE_MASK_NONE | DUK_TYPE_MASK_UNDEFINED)) { - return def_ptr; - } - return duk_require_string(thr, idx); -} - -DUK_EXTERNAL const char *duk_get_lstring_default(duk_hthread *thr, - duk_idx_t idx, - duk_size_t *out_len, - const char *def_ptr, - duk_size_t def_len) { - duk_hstring *h; - const char *ret; - duk_size_t len; - - DUK_ASSERT_API_ENTRY(thr); - - h = duk_get_hstring(thr, idx); - if (h != NULL) { - len = DUK_HSTRING_GET_BYTELEN(h); - ret = (const char *) DUK_HSTRING_GET_DATA(h); - } else { - len = def_len; - ret = def_ptr; - } - - if (out_len != NULL) { - *out_len = len; - } - return ret; -} - -DUK_EXTERNAL const char *duk_get_string_default(duk_hthread *thr, duk_idx_t idx, const char *def_value) { - duk_hstring *h; - - DUK_ASSERT_API_ENTRY(thr); - - h = duk_get_hstring(thr, idx); - if (h != NULL) { - return (const char *) DUK_HSTRING_GET_DATA(h); - } else { - return def_value; - } -} - -DUK_INTERNAL const char *duk_get_string_notsymbol(duk_hthread *thr, duk_idx_t idx) { - duk_hstring *h; - - DUK_ASSERT_API_ENTRY(thr); - - h = duk_get_hstring_notsymbol(thr, idx); - if (h) { - return (const char *) DUK_HSTRING_GET_DATA(h); - } else { - return NULL; - } -} - -DUK_EXTERNAL const char *duk_require_string(duk_hthread *thr, duk_idx_t idx) { - DUK_ASSERT_API_ENTRY(thr); - - return duk_require_lstring(thr, idx, NULL); -} - -DUK_INTERNAL const char *duk_require_string_notsymbol(duk_hthread *thr, duk_idx_t idx) { - duk_hstring *h; - - DUK_ASSERT_API_ENTRY(thr); - - h = duk_require_hstring_notsymbol(thr, idx); - DUK_ASSERT(h != NULL); - return (const char *) DUK_HSTRING_GET_DATA(h); -} - -DUK_EXTERNAL void duk_require_object(duk_hthread *thr, duk_idx_t idx) { - duk_tval *tv; - - DUK_ASSERT_API_ENTRY(thr); - - tv = duk_get_tval_or_unused(thr, idx); - DUK_ASSERT(tv != NULL); - if (DUK_UNLIKELY(!DUK_TVAL_IS_OBJECT(tv))) { - DUK_ERROR_REQUIRE_TYPE_INDEX(thr, idx, "object", DUK_STR_NOT_OBJECT); - DUK_WO_NORETURN(return;); - } -} - -DUK_LOCAL void *duk__get_pointer_raw(duk_hthread *thr, duk_idx_t idx, void *def_value) { - duk_tval *tv; - void *p; - - DUK_CTX_ASSERT_VALID(thr); - - tv = duk_get_tval_or_unused(thr, idx); - DUK_ASSERT(tv != NULL); - if (!DUK_TVAL_IS_POINTER(tv)) { - return def_value; - } - - p = DUK_TVAL_GET_POINTER(tv); /* may be NULL */ - return p; -} - -DUK_EXTERNAL void *duk_get_pointer(duk_hthread *thr, duk_idx_t idx) { - DUK_ASSERT_API_ENTRY(thr); - return duk__get_pointer_raw(thr, idx, NULL /*def_value*/); -} - -DUK_EXTERNAL void *duk_opt_pointer(duk_hthread *thr, duk_idx_t idx, void *def_value) { - DUK_ASSERT_API_ENTRY(thr); - - if (duk_check_type_mask(thr, idx, DUK_TYPE_MASK_NONE | DUK_TYPE_MASK_UNDEFINED)) { - return def_value; - } - return duk_require_pointer(thr, idx); -} - -DUK_EXTERNAL void *duk_get_pointer_default(duk_hthread *thr, duk_idx_t idx, void *def_value) { - DUK_ASSERT_API_ENTRY(thr); - return duk__get_pointer_raw(thr, idx, def_value); -} - -DUK_EXTERNAL void *duk_require_pointer(duk_hthread *thr, duk_idx_t idx) { - duk_tval *tv; - void *p; - - DUK_ASSERT_API_ENTRY(thr); - - /* Note: here we must be wary of the fact that a pointer may be - * valid and be a NULL. - */ - tv = duk_get_tval_or_unused(thr, idx); - DUK_ASSERT(tv != NULL); - if (DUK_UNLIKELY(!DUK_TVAL_IS_POINTER(tv))) { - DUK_ERROR_REQUIRE_TYPE_INDEX(thr, idx, "pointer", DUK_STR_NOT_POINTER); - DUK_WO_NORETURN(return NULL;); - } - p = DUK_TVAL_GET_POINTER(tv); /* may be NULL */ - return p; -} - -#if 0 /*unused*/ -DUK_INTERNAL void *duk_get_voidptr(duk_hthread *thr, duk_idx_t idx) { - duk_tval *tv; - duk_heaphdr *h; - - DUK_ASSERT_API_ENTRY(thr); - - tv = duk_get_tval_or_unused(thr, idx); - DUK_ASSERT(tv != NULL); - if (!DUK_TVAL_IS_HEAP_ALLOCATED(tv)) { - return NULL; - } - - h = DUK_TVAL_GET_HEAPHDR(tv); - DUK_ASSERT(h != NULL); - return (void *) h; -} -#endif - -DUK_LOCAL void *duk__get_buffer_helper(duk_hthread *thr, - duk_idx_t idx, - duk_size_t *out_size, - void *def_ptr, - duk_size_t def_size, - duk_bool_t throw_flag) { - duk_hbuffer *h; - void *ret; - duk_size_t len; - duk_tval *tv; - - DUK_CTX_ASSERT_VALID(thr); - - if (out_size != NULL) { - *out_size = 0; - } - - tv = duk_get_tval_or_unused(thr, idx); - DUK_ASSERT(tv != NULL); - if (DUK_LIKELY(DUK_TVAL_IS_BUFFER(tv))) { - h = DUK_TVAL_GET_BUFFER(tv); - DUK_ASSERT(h != NULL); - - len = DUK_HBUFFER_GET_SIZE(h); - ret = DUK_HBUFFER_GET_DATA_PTR(thr->heap, h); - } else { - if (throw_flag) { - DUK_ERROR_REQUIRE_TYPE_INDEX(thr, idx, "buffer", DUK_STR_NOT_BUFFER); - DUK_WO_NORETURN(return NULL;); - } - len = def_size; - ret = def_ptr; - } - - if (out_size != NULL) { - *out_size = len; - } - return ret; -} - -DUK_EXTERNAL void *duk_get_buffer(duk_hthread *thr, duk_idx_t idx, duk_size_t *out_size) { - DUK_ASSERT_API_ENTRY(thr); - - return duk__get_buffer_helper(thr, idx, out_size, NULL /*def_ptr*/, 0 /*def_size*/, 0 /*throw_flag*/); -} - -DUK_EXTERNAL void *duk_opt_buffer(duk_hthread *thr, duk_idx_t idx, duk_size_t *out_size, void *def_ptr, duk_size_t def_size) { - DUK_ASSERT_API_ENTRY(thr); - - if (duk_check_type_mask(thr, idx, DUK_TYPE_MASK_NONE | DUK_TYPE_MASK_UNDEFINED)) { - if (out_size != NULL) { - *out_size = def_size; - } - return def_ptr; - } - return duk_require_buffer(thr, idx, out_size); -} - -DUK_EXTERNAL void *duk_get_buffer_default(duk_hthread *thr, - duk_idx_t idx, - duk_size_t *out_size, - void *def_ptr, - duk_size_t def_len) { - DUK_ASSERT_API_ENTRY(thr); - - return duk__get_buffer_helper(thr, idx, out_size, def_ptr, def_len, 0 /*throw_flag*/); -} - -DUK_EXTERNAL void *duk_require_buffer(duk_hthread *thr, duk_idx_t idx, duk_size_t *out_size) { - DUK_ASSERT_API_ENTRY(thr); - - return duk__get_buffer_helper(thr, idx, out_size, NULL /*def_ptr*/, 0 /*def_size*/, 1 /*throw_flag*/); -} - -/* Get the active buffer data area for a plain buffer or a buffer object. - * Return NULL if the the value is not a buffer. Note that a buffer may - * have a NULL data pointer when its size is zero, the optional 'out_isbuffer' - * argument allows caller to detect this reliably. - */ -DUK_INTERNAL void *duk_get_buffer_data_raw(duk_hthread *thr, - duk_idx_t idx, - duk_size_t *out_size, - void *def_ptr, - duk_size_t def_size, - duk_bool_t throw_flag, - duk_bool_t *out_isbuffer) { - duk_tval *tv; - - DUK_ASSERT_API_ENTRY(thr); - - if (out_isbuffer != NULL) { - *out_isbuffer = 0; - } - if (out_size != NULL) { - *out_size = def_size; - } - - tv = duk_get_tval_or_unused(thr, idx); - DUK_ASSERT(tv != NULL); - - if (DUK_TVAL_IS_BUFFER(tv)) { - duk_hbuffer *h = DUK_TVAL_GET_BUFFER(tv); - DUK_ASSERT(h != NULL); - if (out_size != NULL) { - *out_size = DUK_HBUFFER_GET_SIZE(h); - } - if (out_isbuffer != NULL) { - *out_isbuffer = 1; - } - return (void *) DUK_HBUFFER_GET_DATA_PTR(thr->heap, h); /* may be NULL (but only if size is 0) */ - } -#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) - else if (DUK_TVAL_IS_OBJECT(tv)) { - duk_hobject *h = DUK_TVAL_GET_OBJECT(tv); - DUK_ASSERT(h != NULL); - if (DUK_HOBJECT_IS_BUFOBJ(h)) { - /* XXX: this is probably a useful shared helper: for a - * duk_hbufobj, get a validated buffer pointer/length. - */ - duk_hbufobj *h_bufobj = (duk_hbufobj *) h; - DUK_HBUFOBJ_ASSERT_VALID(h_bufobj); - - if (h_bufobj->buf != NULL && DUK_HBUFOBJ_VALID_SLICE(h_bufobj)) { - duk_uint8_t *p; - - p = (duk_uint8_t *) DUK_HBUFFER_GET_DATA_PTR(thr->heap, h_bufobj->buf); - if (out_size != NULL) { - *out_size = (duk_size_t) h_bufobj->length; - } - if (out_isbuffer != NULL) { - *out_isbuffer = 1; - } - return (void *) (p + h_bufobj->offset); - } - /* if slice not fully valid, treat as error */ - } - } -#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ - - if (throw_flag) { - DUK_ERROR_REQUIRE_TYPE_INDEX(thr, idx, "buffer", DUK_STR_NOT_BUFFER); - DUK_WO_NORETURN(return NULL;); - } - return def_ptr; -} - -DUK_EXTERNAL void *duk_get_buffer_data(duk_hthread *thr, duk_idx_t idx, duk_size_t *out_size) { - DUK_ASSERT_API_ENTRY(thr); - return duk_get_buffer_data_raw(thr, idx, out_size, NULL /*def_ptr*/, 0 /*def_size*/, 0 /*throw_flag*/, NULL); -} - -DUK_EXTERNAL void *duk_get_buffer_data_default(duk_hthread *thr, - duk_idx_t idx, - duk_size_t *out_size, - void *def_ptr, - duk_size_t def_size) { - DUK_ASSERT_API_ENTRY(thr); - return duk_get_buffer_data_raw(thr, idx, out_size, def_ptr, def_size, 0 /*throw_flag*/, NULL); -} - -DUK_EXTERNAL void *duk_opt_buffer_data(duk_hthread *thr, duk_idx_t idx, duk_size_t *out_size, void *def_ptr, duk_size_t def_size) { - DUK_ASSERT_API_ENTRY(thr); - - if (duk_check_type_mask(thr, idx, DUK_TYPE_MASK_NONE | DUK_TYPE_MASK_UNDEFINED)) { - if (out_size != NULL) { - *out_size = def_size; - } - return def_ptr; - } - return duk_require_buffer_data(thr, idx, out_size); -} - -DUK_EXTERNAL void *duk_require_buffer_data(duk_hthread *thr, duk_idx_t idx, duk_size_t *out_size) { - DUK_ASSERT_API_ENTRY(thr); - return duk_get_buffer_data_raw(thr, idx, out_size, NULL /*def_ptr*/, 0 /*def_size*/, 1 /*throw_flag*/, NULL); -} - -/* Raw helper for getting a value from the stack, checking its tag. - * The tag cannot be a number because numbers don't have an internal - * tag in the packed representation. - */ - -DUK_LOCAL duk_heaphdr *duk__get_tagged_heaphdr_raw(duk_hthread *thr, duk_idx_t idx, duk_uint_t tag) { - duk_tval *tv; - duk_heaphdr *ret; - - DUK_CTX_ASSERT_VALID(thr); - - tv = duk_get_tval_or_unused(thr, idx); - DUK_ASSERT(tv != NULL); - if (DUK_TVAL_GET_TAG(tv) != tag) { - return (duk_heaphdr *) NULL; - } - - ret = DUK_TVAL_GET_HEAPHDR(tv); - DUK_ASSERT(ret != NULL); /* tagged null pointers should never occur */ - return ret; -} - -DUK_INTERNAL duk_hstring *duk_get_hstring(duk_hthread *thr, duk_idx_t idx) { - DUK_ASSERT_API_ENTRY(thr); - return (duk_hstring *) duk__get_tagged_heaphdr_raw(thr, idx, DUK_TAG_STRING); -} - -DUK_INTERNAL duk_hstring *duk_get_hstring_notsymbol(duk_hthread *thr, duk_idx_t idx) { - duk_hstring *h; - - DUK_ASSERT_API_ENTRY(thr); - - h = (duk_hstring *) duk__get_tagged_heaphdr_raw(thr, idx, DUK_TAG_STRING); - if (DUK_UNLIKELY(h && DUK_HSTRING_HAS_SYMBOL(h))) { - return NULL; - } - return h; -} - -DUK_INTERNAL duk_hstring *duk_require_hstring(duk_hthread *thr, duk_idx_t idx) { - duk_hstring *h; - - DUK_ASSERT_API_ENTRY(thr); - - h = (duk_hstring *) duk__get_tagged_heaphdr_raw(thr, idx, DUK_TAG_STRING); - if (DUK_UNLIKELY(h == NULL)) { - DUK_ERROR_REQUIRE_TYPE_INDEX(thr, idx, "string", DUK_STR_NOT_STRING); - DUK_WO_NORETURN(return NULL;); - } - return h; -} - -DUK_INTERNAL duk_hstring *duk_require_hstring_notsymbol(duk_hthread *thr, duk_idx_t idx) { - duk_hstring *h; - - DUK_ASSERT_API_ENTRY(thr); - - h = (duk_hstring *) duk__get_tagged_heaphdr_raw(thr, idx, DUK_TAG_STRING); - if (DUK_UNLIKELY(h == NULL || DUK_HSTRING_HAS_SYMBOL(h))) { - DUK_ERROR_REQUIRE_TYPE_INDEX(thr, idx, "string", DUK_STR_NOT_STRING); - DUK_WO_NORETURN(return NULL;); - } - return h; -} - -DUK_INTERNAL duk_hobject *duk_get_hobject(duk_hthread *thr, duk_idx_t idx) { - DUK_ASSERT_API_ENTRY(thr); - return (duk_hobject *) duk__get_tagged_heaphdr_raw(thr, idx, DUK_TAG_OBJECT); -} - -DUK_INTERNAL duk_hobject *duk_require_hobject(duk_hthread *thr, duk_idx_t idx) { - duk_hobject *h; - - DUK_ASSERT_API_ENTRY(thr); - - h = (duk_hobject *) duk__get_tagged_heaphdr_raw(thr, idx, DUK_TAG_OBJECT); - if (DUK_UNLIKELY(h == NULL)) { - DUK_ERROR_REQUIRE_TYPE_INDEX(thr, idx, "object", DUK_STR_NOT_OBJECT); - DUK_WO_NORETURN(return NULL;); - } - return h; -} - -DUK_INTERNAL duk_hbuffer *duk_get_hbuffer(duk_hthread *thr, duk_idx_t idx) { - DUK_ASSERT_API_ENTRY(thr); - return (duk_hbuffer *) duk__get_tagged_heaphdr_raw(thr, idx, DUK_TAG_BUFFER); -} - -DUK_INTERNAL duk_hbuffer *duk_require_hbuffer(duk_hthread *thr, duk_idx_t idx) { - duk_hbuffer *h; - - DUK_ASSERT_API_ENTRY(thr); - - h = (duk_hbuffer *) duk__get_tagged_heaphdr_raw(thr, idx, DUK_TAG_BUFFER); - if (DUK_UNLIKELY(h == NULL)) { - DUK_ERROR_REQUIRE_TYPE_INDEX(thr, idx, "buffer", DUK_STR_NOT_BUFFER); - DUK_WO_NORETURN(return NULL;); - } - return h; -} - -DUK_INTERNAL duk_hthread *duk_get_hthread(duk_hthread *thr, duk_idx_t idx) { - duk_hobject *h; - - DUK_ASSERT_API_ENTRY(thr); - - h = (duk_hobject *) duk__get_tagged_heaphdr_raw(thr, idx, DUK_TAG_OBJECT); - if (DUK_UNLIKELY(h != NULL && !DUK_HOBJECT_IS_THREAD(h))) { - h = NULL; - } - return (duk_hthread *) h; -} - -DUK_INTERNAL duk_hthread *duk_require_hthread(duk_hthread *thr, duk_idx_t idx) { - duk_hobject *h; - - DUK_ASSERT_API_ENTRY(thr); - - h = (duk_hobject *) duk__get_tagged_heaphdr_raw(thr, idx, DUK_TAG_OBJECT); - if (DUK_UNLIKELY(!(h != NULL && DUK_HOBJECT_IS_THREAD(h)))) { - DUK_ERROR_REQUIRE_TYPE_INDEX(thr, idx, "thread", DUK_STR_NOT_THREAD); - DUK_WO_NORETURN(return NULL;); - } - return (duk_hthread *) h; -} - -DUK_INTERNAL duk_hcompfunc *duk_get_hcompfunc(duk_hthread *thr, duk_idx_t idx) { - duk_hobject *h; - - DUK_ASSERT_API_ENTRY(thr); - - h = (duk_hobject *) duk__get_tagged_heaphdr_raw(thr, idx, DUK_TAG_OBJECT); - if (DUK_UNLIKELY(h != NULL && !DUK_HOBJECT_IS_COMPFUNC(h))) { - h = NULL; - } - return (duk_hcompfunc *) h; -} - -DUK_INTERNAL duk_hcompfunc *duk_require_hcompfunc(duk_hthread *thr, duk_idx_t idx) { - duk_hobject *h; - - DUK_ASSERT_API_ENTRY(thr); - - h = (duk_hobject *) duk__get_tagged_heaphdr_raw(thr, idx, DUK_TAG_OBJECT); - if (DUK_UNLIKELY(!(h != NULL && DUK_HOBJECT_IS_COMPFUNC(h)))) { - DUK_ERROR_REQUIRE_TYPE_INDEX(thr, idx, "compiledfunction", DUK_STR_NOT_COMPFUNC); - DUK_WO_NORETURN(return NULL;); - } - return (duk_hcompfunc *) h; -} - -DUK_INTERNAL duk_hnatfunc *duk_get_hnatfunc(duk_hthread *thr, duk_idx_t idx) { - duk_hobject *h; - - DUK_ASSERT_API_ENTRY(thr); - - h = (duk_hobject *) duk__get_tagged_heaphdr_raw(thr, idx, DUK_TAG_OBJECT); - if (DUK_UNLIKELY(h != NULL && !DUK_HOBJECT_IS_NATFUNC(h))) { - h = NULL; - } - return (duk_hnatfunc *) h; -} - -DUK_INTERNAL duk_hnatfunc *duk_require_hnatfunc(duk_hthread *thr, duk_idx_t idx) { - duk_hobject *h; - - DUK_ASSERT_API_ENTRY(thr); - - h = (duk_hobject *) duk__get_tagged_heaphdr_raw(thr, idx, DUK_TAG_OBJECT); - if (DUK_UNLIKELY(!(h != NULL && DUK_HOBJECT_IS_NATFUNC(h)))) { - DUK_ERROR_REQUIRE_TYPE_INDEX(thr, idx, "nativefunction", DUK_STR_NOT_NATFUNC); - DUK_WO_NORETURN(return NULL;); - } - return (duk_hnatfunc *) h; -} - -DUK_EXTERNAL duk_c_function duk_get_c_function(duk_hthread *thr, duk_idx_t idx) { - duk_tval *tv; - duk_hobject *h; - duk_hnatfunc *f; - - DUK_ASSERT_API_ENTRY(thr); - - tv = duk_get_tval_or_unused(thr, idx); - DUK_ASSERT(tv != NULL); - if (DUK_UNLIKELY(!DUK_TVAL_IS_OBJECT(tv))) { - return NULL; - } - h = DUK_TVAL_GET_OBJECT(tv); - DUK_ASSERT(h != NULL); - - if (DUK_UNLIKELY(!DUK_HOBJECT_IS_NATFUNC(h))) { - return NULL; - } - DUK_ASSERT(DUK_HOBJECT_HAS_NATFUNC(h)); - f = (duk_hnatfunc *) h; - - return f->func; -} - -DUK_EXTERNAL duk_c_function duk_opt_c_function(duk_hthread *thr, duk_idx_t idx, duk_c_function def_value) { - DUK_ASSERT_API_ENTRY(thr); - - if (duk_check_type_mask(thr, idx, DUK_TYPE_MASK_NONE | DUK_TYPE_MASK_UNDEFINED)) { - return def_value; - } - return duk_require_c_function(thr, idx); -} - -DUK_EXTERNAL duk_c_function duk_get_c_function_default(duk_hthread *thr, duk_idx_t idx, duk_c_function def_value) { - duk_c_function ret; - - DUK_ASSERT_API_ENTRY(thr); - - ret = duk_get_c_function(thr, idx); - if (ret != NULL) { - return ret; - } - - return def_value; -} - -DUK_EXTERNAL duk_c_function duk_require_c_function(duk_hthread *thr, duk_idx_t idx) { - duk_c_function ret; - - DUK_ASSERT_API_ENTRY(thr); - - ret = duk_get_c_function(thr, idx); - if (DUK_UNLIKELY(!ret)) { - DUK_ERROR_REQUIRE_TYPE_INDEX(thr, idx, "nativefunction", DUK_STR_NOT_NATFUNC); - DUK_WO_NORETURN(return ret;); - } - return ret; -} - -DUK_EXTERNAL void duk_require_function(duk_hthread *thr, duk_idx_t idx) { - DUK_ASSERT_API_ENTRY(thr); - if (DUK_UNLIKELY(!duk_is_function(thr, idx))) { - DUK_ERROR_REQUIRE_TYPE_INDEX(thr, idx, "function", DUK_STR_NOT_FUNCTION); - DUK_WO_NORETURN(return;); - } -} - -DUK_EXTERNAL void duk_require_constructable(duk_hthread *thr, duk_idx_t idx) { - duk_hobject *h; - - DUK_ASSERT_API_ENTRY(thr); - - h = duk_require_hobject_accept_mask(thr, idx, DUK_TYPE_MASK_LIGHTFUNC); - if (DUK_UNLIKELY(h != NULL && !DUK_HOBJECT_HAS_CONSTRUCTABLE(h))) { - DUK_ERROR_REQUIRE_TYPE_INDEX(thr, idx, "constructable", DUK_STR_NOT_CONSTRUCTABLE); - DUK_WO_NORETURN(return;); - } - /* Lightfuncs (h == NULL) are constructable. */ -} - -DUK_EXTERNAL duk_hthread *duk_get_context(duk_hthread *thr, duk_idx_t idx) { - DUK_ASSERT_API_ENTRY(thr); - - return duk_get_hthread(thr, idx); -} - -DUK_EXTERNAL duk_hthread *duk_require_context(duk_hthread *thr, duk_idx_t idx) { - DUK_ASSERT_API_ENTRY(thr); - - return duk_require_hthread(thr, idx); -} - -DUK_EXTERNAL duk_hthread *duk_opt_context(duk_hthread *thr, duk_idx_t idx, duk_hthread *def_value) { - DUK_ASSERT_API_ENTRY(thr); - - if (duk_check_type_mask(thr, idx, DUK_TYPE_MASK_NONE | DUK_TYPE_MASK_UNDEFINED)) { - return def_value; - } - return duk_require_context(thr, idx); -} - -DUK_EXTERNAL duk_hthread *duk_get_context_default(duk_hthread *thr, duk_idx_t idx, duk_hthread *def_value) { - duk_hthread *ret; - - DUK_ASSERT_API_ENTRY(thr); - - ret = duk_get_context(thr, idx); - if (ret != NULL) { - return ret; - } - - return def_value; -} - -DUK_EXTERNAL void *duk_get_heapptr(duk_hthread *thr, duk_idx_t idx) { - duk_tval *tv; - void *ret; - - DUK_ASSERT_API_ENTRY(thr); - - tv = duk_get_tval_or_unused(thr, idx); - DUK_ASSERT(tv != NULL); - if (DUK_UNLIKELY(!DUK_TVAL_IS_HEAP_ALLOCATED(tv))) { - return (void *) NULL; - } - - ret = (void *) DUK_TVAL_GET_HEAPHDR(tv); - DUK_ASSERT(ret != NULL); - return ret; -} - -DUK_EXTERNAL void *duk_opt_heapptr(duk_hthread *thr, duk_idx_t idx, void *def_value) { - DUK_ASSERT_API_ENTRY(thr); - - if (duk_check_type_mask(thr, idx, DUK_TYPE_MASK_NONE | DUK_TYPE_MASK_UNDEFINED)) { - return def_value; - } - return duk_require_heapptr(thr, idx); -} - -DUK_EXTERNAL void *duk_get_heapptr_default(duk_hthread *thr, duk_idx_t idx, void *def_value) { - void *ret; - - DUK_ASSERT_API_ENTRY(thr); - - ret = duk_get_heapptr(thr, idx); - if (ret != NULL) { - return ret; - } - - return def_value; -} - -DUK_EXTERNAL void *duk_require_heapptr(duk_hthread *thr, duk_idx_t idx) { - duk_tval *tv; - void *ret; - - DUK_ASSERT_API_ENTRY(thr); - - tv = duk_get_tval_or_unused(thr, idx); - DUK_ASSERT(tv != NULL); - if (DUK_UNLIKELY(!DUK_TVAL_IS_HEAP_ALLOCATED(tv))) { - DUK_ERROR_REQUIRE_TYPE_INDEX(thr, idx, "heapobject", DUK_STR_UNEXPECTED_TYPE); - DUK_WO_NORETURN(return NULL;); - } - - ret = (void *) DUK_TVAL_GET_HEAPHDR(tv); - DUK_ASSERT(ret != NULL); - return ret; -} - -/* Internal helper for getting/requiring a duk_hobject with possible promotion. */ -DUK_LOCAL duk_hobject *duk__get_hobject_promote_mask_raw(duk_hthread *thr, duk_idx_t idx, duk_uint_t type_mask) { - duk_uint_t val_mask; - duk_hobject *res; - - DUK_CTX_ASSERT_VALID(thr); - - res = duk_get_hobject(thr, idx); /* common case, not promoted */ - if (DUK_LIKELY(res != NULL)) { - DUK_ASSERT(res != NULL); - return res; - } - - val_mask = duk_get_type_mask(thr, idx); - if (val_mask & type_mask) { - if (type_mask & DUK_TYPE_MASK_PROMOTE) { - res = duk_to_hobject(thr, idx); - DUK_ASSERT(res != NULL); - return res; - } else { - return NULL; /* accept without promoting */ - } - } - - if (type_mask & DUK_TYPE_MASK_THROW) { - DUK_ERROR_REQUIRE_TYPE_INDEX(thr, idx, "object", DUK_STR_NOT_OBJECT); - DUK_WO_NORETURN(return NULL;); - } - return NULL; -} - -/* Get a duk_hobject * at 'idx'; if the value is not an object but matches the - * supplied 'type_mask', promote it to an object and return the duk_hobject *. - * This is useful for call sites which want an object but also accept a plain - * buffer and/or a lightfunc which gets automatically promoted to an object. - * Return value is NULL if value is neither an object nor a plain type allowed - * by the mask. - */ -DUK_INTERNAL duk_hobject *duk_get_hobject_promote_mask(duk_hthread *thr, duk_idx_t idx, duk_uint_t type_mask) { - DUK_ASSERT_API_ENTRY(thr); - return duk__get_hobject_promote_mask_raw(thr, idx, type_mask | DUK_TYPE_MASK_PROMOTE); -} - -/* Like duk_get_hobject_promote_mask() but throw a TypeError instead of - * returning a NULL. - */ -DUK_INTERNAL duk_hobject *duk_require_hobject_promote_mask(duk_hthread *thr, duk_idx_t idx, duk_uint_t type_mask) { - DUK_ASSERT_API_ENTRY(thr); - return duk__get_hobject_promote_mask_raw(thr, idx, type_mask | DUK_TYPE_MASK_THROW | DUK_TYPE_MASK_PROMOTE); -} - -/* Require a duk_hobject * at 'idx'; if the value is not an object but matches the - * supplied 'type_mask', return a NULL instead. Otherwise throw a TypeError. - */ -DUK_INTERNAL duk_hobject *duk_require_hobject_accept_mask(duk_hthread *thr, duk_idx_t idx, duk_uint_t type_mask) { - DUK_ASSERT_API_ENTRY(thr); - return duk__get_hobject_promote_mask_raw(thr, idx, type_mask | DUK_TYPE_MASK_THROW); -} - -DUK_INTERNAL duk_hobject *duk_get_hobject_with_class(duk_hthread *thr, duk_idx_t idx, duk_small_uint_t classnum) { - duk_hobject *h; - - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT_DISABLE(classnum >= 0); /* unsigned */ - DUK_ASSERT(classnum <= DUK_HOBJECT_CLASS_MAX); - - h = (duk_hobject *) duk__get_tagged_heaphdr_raw(thr, idx, DUK_TAG_OBJECT); - if (DUK_UNLIKELY(h != NULL && DUK_HOBJECT_GET_CLASS_NUMBER(h) != classnum)) { - h = NULL; - } - return h; -} - -DUK_INTERNAL duk_hobject *duk_require_hobject_with_class(duk_hthread *thr, duk_idx_t idx, duk_small_uint_t classnum) { - duk_hobject *h; - - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT_DISABLE(classnum >= 0); /* unsigned */ - DUK_ASSERT(classnum <= DUK_HOBJECT_CLASS_MAX); - - h = (duk_hobject *) duk__get_tagged_heaphdr_raw(thr, idx, DUK_TAG_OBJECT); - if (DUK_UNLIKELY(!(h != NULL && DUK_HOBJECT_GET_CLASS_NUMBER(h) == classnum))) { - duk_hstring *h_class; - h_class = DUK_HTHREAD_GET_STRING(thr, DUK_HOBJECT_CLASS_NUMBER_TO_STRIDX(classnum)); - DUK_UNREF(h_class); - - DUK_ERROR_REQUIRE_TYPE_INDEX(thr, idx, (const char *) DUK_HSTRING_GET_DATA(h_class), DUK_STR_UNEXPECTED_TYPE); - DUK_WO_NORETURN(return NULL;); - } - return h; -} - -DUK_EXTERNAL duk_size_t duk_get_length(duk_hthread *thr, duk_idx_t idx) { - duk_tval *tv; - - DUK_ASSERT_API_ENTRY(thr); - - tv = duk_get_tval_or_unused(thr, idx); - DUK_ASSERT(tv != NULL); - - switch (DUK_TVAL_GET_TAG(tv)) { - case DUK_TAG_UNDEFINED: - case DUK_TAG_NULL: - case DUK_TAG_BOOLEAN: - case DUK_TAG_POINTER: - return 0; -#if defined(DUK_USE_PREFER_SIZE) - /* String and buffer have a virtual non-configurable .length property - * which is within size_t range so it can be looked up without specific - * type checks. Lightfuncs inherit from %NativeFunctionPrototype% - * which provides an inherited .length accessor; it could be overwritten - * to produce unexpected types or values, but just number convert and - * duk_size_t cast for now. - */ - case DUK_TAG_STRING: - case DUK_TAG_BUFFER: - case DUK_TAG_LIGHTFUNC: { - duk_size_t ret; - duk_get_prop_stridx(thr, idx, DUK_STRIDX_LENGTH); - ret = (duk_size_t) duk_to_number_m1(thr); - duk_pop_unsafe(thr); - return ret; - } -#else /* DUK_USE_PREFER_SIZE */ - case DUK_TAG_STRING: { - duk_hstring *h = DUK_TVAL_GET_STRING(tv); - DUK_ASSERT(h != NULL); - if (DUK_UNLIKELY(DUK_HSTRING_HAS_SYMBOL(h))) { - return 0; - } - return (duk_size_t) DUK_HSTRING_GET_CHARLEN(h); - } - case DUK_TAG_BUFFER: { - duk_hbuffer *h = DUK_TVAL_GET_BUFFER(tv); - DUK_ASSERT(h != NULL); - return (duk_size_t) DUK_HBUFFER_GET_SIZE(h); - } - case DUK_TAG_LIGHTFUNC: { - /* We could look up the length from the lightfunc duk_tval, - * but since Duktape 2.2 lightfunc .length comes from - * %NativeFunctionPrototype% which can be overridden, so - * look up the property explicitly. - */ - duk_size_t ret; - duk_get_prop_stridx(thr, idx, DUK_STRIDX_LENGTH); - ret = (duk_size_t) duk_to_number_m1(thr); - duk_pop_unsafe(thr); - return ret; - } -#endif /* DUK_USE_PREFER_SIZE */ - case DUK_TAG_OBJECT: { - duk_hobject *h = DUK_TVAL_GET_OBJECT(tv); - DUK_ASSERT(h != NULL); - return (duk_size_t) duk_hobject_get_length(thr, h); - } -#if defined(DUK_USE_FASTINT) - case DUK_TAG_FASTINT: -#endif - default: - /* number or 'unused' */ - DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv) || DUK_TVAL_IS_UNUSED(tv)); - return 0; - } - - DUK_UNREACHABLE(); -} - -/* - * duk_known_xxx() helpers - * - * Used internally when we're 100% sure that a certain index is valid and - * contains an object of a certain type. For example, if we duk_push_object() - * we can then safely duk_known_hobject(thr, -1). These helpers just assert - * for the index and type, and if the assumptions are not valid, memory unsafe - * behavior happens. - */ - -DUK_LOCAL duk_heaphdr *duk__known_heaphdr(duk_hthread *thr, duk_idx_t idx) { - duk_tval *tv; - duk_heaphdr *h; - - DUK_CTX_ASSERT_VALID(thr); - if (idx < 0) { - tv = thr->valstack_top + idx; - } else { - tv = thr->valstack_bottom + idx; - } - DUK_ASSERT(tv >= thr->valstack_bottom); - DUK_ASSERT(tv < thr->valstack_top); - h = DUK_TVAL_GET_HEAPHDR(tv); - DUK_ASSERT(h != NULL); - return h; -} - -DUK_INTERNAL duk_hstring *duk_known_hstring(duk_hthread *thr, duk_idx_t idx) { - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT(duk_get_hstring(thr, idx) != NULL); - return (duk_hstring *) duk__known_heaphdr(thr, idx); -} - -DUK_INTERNAL duk_hobject *duk_known_hobject(duk_hthread *thr, duk_idx_t idx) { - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT(duk_get_hobject(thr, idx) != NULL); - return (duk_hobject *) duk__known_heaphdr(thr, idx); -} - -DUK_INTERNAL duk_hbuffer *duk_known_hbuffer(duk_hthread *thr, duk_idx_t idx) { - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT(duk_get_hbuffer(thr, idx) != NULL); - return (duk_hbuffer *) duk__known_heaphdr(thr, idx); -} - -DUK_INTERNAL duk_hcompfunc *duk_known_hcompfunc(duk_hthread *thr, duk_idx_t idx) { - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT(duk_get_hcompfunc(thr, idx) != NULL); - return (duk_hcompfunc *) duk__known_heaphdr(thr, idx); -} - -DUK_INTERNAL duk_hnatfunc *duk_known_hnatfunc(duk_hthread *thr, duk_idx_t idx) { - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT(duk_get_hnatfunc(thr, idx) != NULL); - return (duk_hnatfunc *) duk__known_heaphdr(thr, idx); -} - -DUK_EXTERNAL void duk_set_length(duk_hthread *thr, duk_idx_t idx, duk_size_t len) { - DUK_ASSERT_API_ENTRY(thr); - - idx = duk_normalize_index(thr, idx); - duk_push_uint(thr, (duk_uint_t) len); - duk_put_prop_stridx(thr, idx, DUK_STRIDX_LENGTH); -} - -/* - * Conversions and coercions - * - * The conversion/coercions are in-place operations on the value stack. - * Some operations are implemented here directly, while others call a - * helper in duk_js_ops.c after validating arguments. - */ - -/* E5 Section 8.12.8 */ - -DUK_LOCAL duk_bool_t duk__defaultvalue_coerce_attempt(duk_hthread *thr, duk_idx_t idx, duk_small_uint_t func_stridx) { - if (duk_get_prop_stridx(thr, idx, func_stridx)) { - /* [ ... func ] */ - if (duk_is_callable(thr, -1)) { - duk_dup(thr, idx); /* -> [ ... func this ] */ - duk_call_method(thr, 0); /* -> [ ... retval ] */ - if (duk_is_primitive(thr, -1)) { - duk_replace(thr, idx); - return 1; - } - /* [ ... retval ]; popped below */ - } - } - duk_pop_unsafe(thr); /* [ ... func/retval ] -> [ ... ] */ - return 0; -} - -DUK_EXTERNAL void duk_to_undefined(duk_hthread *thr, duk_idx_t idx) { - duk_tval *tv; - - DUK_ASSERT_API_ENTRY(thr); - - tv = duk_require_tval(thr, idx); - DUK_ASSERT(tv != NULL); - DUK_TVAL_SET_UNDEFINED_UPDREF(thr, tv); /* side effects */ -} - -DUK_EXTERNAL void duk_to_null(duk_hthread *thr, duk_idx_t idx) { - duk_tval *tv; - - DUK_ASSERT_API_ENTRY(thr); - - tv = duk_require_tval(thr, idx); - DUK_ASSERT(tv != NULL); - DUK_TVAL_SET_NULL_UPDREF(thr, tv); /* side effects */ -} - -/* E5 Section 9.1 */ -DUK_LOCAL const char * const duk__toprim_hint_strings[3] = { "default", "string", "number" }; -DUK_LOCAL void duk__to_primitive_helper(duk_hthread *thr, duk_idx_t idx, duk_int_t hint, duk_bool_t check_symbol) { - /* Inline initializer for coercers[] is not allowed by old compilers like BCC. */ - duk_small_uint_t coercers[2]; - - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT(hint == DUK_HINT_NONE || hint == DUK_HINT_NUMBER || hint == DUK_HINT_STRING); - - idx = duk_require_normalize_index(thr, idx); - - /* If already primitive, return as is. */ - if (!duk_check_type_mask(thr, idx, DUK_TYPE_MASK_OBJECT | DUK_TYPE_MASK_LIGHTFUNC | DUK_TYPE_MASK_BUFFER)) { - DUK_ASSERT(!duk_is_buffer(thr, idx)); /* duk_to_string() relies on this behavior */ - return; - } - - /* @@toPrimitive lookup. Also do for plain buffers and lightfuncs - * which mimic objects. - */ - if (check_symbol && duk_get_method_stridx(thr, idx, DUK_STRIDX_WELLKNOWN_SYMBOL_TO_PRIMITIVE)) { - DUK_ASSERT(hint >= 0 && (duk_size_t) hint < sizeof(duk__toprim_hint_strings) / sizeof(const char *)); - duk_dup(thr, idx); - duk_push_string(thr, duk__toprim_hint_strings[hint]); - duk_call_method(thr, 1); /* [ ... method value hint ] -> [ ... res] */ - if (duk_check_type_mask(thr, -1, DUK_TYPE_MASK_OBJECT | DUK_TYPE_MASK_LIGHTFUNC | DUK_TYPE_MASK_BUFFER)) { - goto fail; - } - duk_replace(thr, idx); - return; - } - - /* Objects are coerced based on E5 specification. - * Lightfuncs are coerced because they behave like - * objects even if they're internally a primitive - * type. Same applies to plain buffers, which behave - * like ArrayBuffer objects since Duktape 2.x. - */ - - /* Hint magic for Date is unnecessary in ES2015 because of - * Date.prototype[@@toPrimitive]. However, it is needed if - * symbol support is not enabled. - */ -#if defined(DUK_USE_SYMBOL_BUILTIN) - if (hint == DUK_HINT_NONE) { - hint = DUK_HINT_NUMBER; - } -#else /* DUK_USE_SYMBOL_BUILTIN */ - if (hint == DUK_HINT_NONE) { - duk_small_uint_t class_number; - - class_number = duk_get_class_number(thr, idx); - if (class_number == DUK_HOBJECT_CLASS_DATE) { - hint = DUK_HINT_STRING; - } else { - hint = DUK_HINT_NUMBER; - } - } -#endif /* DUK_USE_SYMBOL_BUILTIN */ - - coercers[0] = DUK_STRIDX_VALUE_OF; - coercers[1] = DUK_STRIDX_TO_STRING; - if (hint == DUK_HINT_STRING) { - coercers[0] = DUK_STRIDX_TO_STRING; - coercers[1] = DUK_STRIDX_VALUE_OF; - } - - if (duk__defaultvalue_coerce_attempt(thr, idx, coercers[0])) { - DUK_ASSERT(!duk_is_buffer(thr, idx)); /* duk_to_string() relies on this behavior */ - return; - } - - if (duk__defaultvalue_coerce_attempt(thr, idx, coercers[1])) { - DUK_ASSERT(!duk_is_buffer(thr, idx)); /* duk_to_string() relies on this behavior */ - return; - } - -fail: - DUK_ERROR_TYPE(thr, DUK_STR_TOPRIMITIVE_FAILED); - DUK_WO_NORETURN(return;); -} - -DUK_EXTERNAL void duk_to_primitive(duk_hthread *thr, duk_idx_t idx, duk_int_t hint) { - duk__to_primitive_helper(thr, idx, hint, 1 /*check_symbol*/); -} - -#if defined(DUK_USE_SYMBOL_BUILTIN) -DUK_INTERNAL void duk_to_primitive_ordinary(duk_hthread *thr, duk_idx_t idx, duk_int_t hint) { - duk__to_primitive_helper(thr, idx, hint, 0 /*check_symbol*/); -} -#endif - -/* E5 Section 9.2 */ -DUK_EXTERNAL duk_bool_t duk_to_boolean(duk_hthread *thr, duk_idx_t idx) { - duk_tval *tv; - duk_bool_t val; - - DUK_ASSERT_API_ENTRY(thr); - - idx = duk_require_normalize_index(thr, idx); - tv = DUK_GET_TVAL_POSIDX(thr, idx); - DUK_ASSERT(tv != NULL); - - val = duk_js_toboolean(tv); - DUK_ASSERT(val == 0 || val == 1); - - /* Note: no need to re-lookup tv, conversion is side effect free. */ - DUK_ASSERT(tv != NULL); - DUK_TVAL_SET_BOOLEAN_UPDREF(thr, tv, val); /* side effects */ - return val; -} - -DUK_INTERNAL duk_bool_t duk_to_boolean_top_pop(duk_hthread *thr) { - duk_tval *tv; - duk_bool_t val; - - DUK_ASSERT_API_ENTRY(thr); - - tv = duk_require_tval(thr, -1); - DUK_ASSERT(tv != NULL); - - val = duk_js_toboolean(tv); - DUK_ASSERT(val == 0 || val == 1); - - duk_pop_unsafe(thr); - return val; -} - -DUK_EXTERNAL duk_double_t duk_to_number(duk_hthread *thr, duk_idx_t idx) { - duk_tval *tv; - duk_double_t d; - - DUK_ASSERT_API_ENTRY(thr); - - /* XXX: No need to normalize; the whole operation could be inlined here to - * avoid 'tv' re-lookup. - */ - idx = duk_require_normalize_index(thr, idx); - tv = DUK_GET_TVAL_POSIDX(thr, idx); - DUK_ASSERT(tv != NULL); - d = duk_js_tonumber(thr, tv); /* XXX: fastint coercion? now result will always be a non-fastint */ - - /* ToNumber() may have side effects so must relookup 'tv'. */ - tv = DUK_GET_TVAL_POSIDX(thr, idx); - DUK_TVAL_SET_NUMBER_UPDREF(thr, tv, d); /* side effects */ - return d; -} - -DUK_INTERNAL duk_double_t duk_to_number_m1(duk_hthread *thr) { - DUK_ASSERT_API_ENTRY(thr); - return duk_to_number(thr, -1); -} -DUK_INTERNAL duk_double_t duk_to_number_m2(duk_hthread *thr) { - DUK_ASSERT_API_ENTRY(thr); - return duk_to_number(thr, -2); -} - -DUK_INTERNAL duk_double_t duk_to_number_tval(duk_hthread *thr, duk_tval *tv) { -#if defined(DUK_USE_PREFER_SIZE) - duk_double_t res; - - DUK_ASSERT_API_ENTRY(thr); - - duk_push_tval(thr, tv); - res = duk_to_number_m1(thr); - duk_pop_unsafe(thr); - return res; -#else - duk_double_t res; - duk_tval *tv_dst; - - DUK_ASSERT_API_ENTRY(thr); - DUK__ASSERT_SPACE(); - - tv_dst = thr->valstack_top++; - DUK_TVAL_SET_TVAL(tv_dst, tv); - DUK_TVAL_INCREF(thr, tv_dst); /* decref not necessary */ - res = duk_to_number_m1(thr); /* invalidates tv_dst */ - - tv_dst = --thr->valstack_top; - DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv_dst)); - DUK_ASSERT(!DUK_TVAL_NEEDS_REFCOUNT_UPDATE(tv_dst)); /* plain number */ - DUK_TVAL_SET_UNDEFINED(tv_dst); /* valstack init policy */ - - return res; -#endif -} - -/* XXX: combine all the integer conversions: they share everything - * but the helper function for coercion. - */ - -typedef duk_double_t (*duk__toint_coercer)(duk_hthread *thr, duk_tval *tv); - -DUK_LOCAL duk_double_t duk__to_int_uint_helper(duk_hthread *thr, duk_idx_t idx, duk__toint_coercer coerce_func) { - duk_tval *tv; - duk_double_t d; - - DUK_CTX_ASSERT_VALID(thr); - - tv = duk_require_tval(thr, idx); - DUK_ASSERT(tv != NULL); - -#if defined(DUK_USE_FASTINT) - /* If argument is a fastint, guarantee that it remains one. - * There's no downgrade check for other cases. - */ - if (DUK_TVAL_IS_FASTINT(tv)) { - /* XXX: Unnecessary conversion back and forth. */ - return (duk_double_t) DUK_TVAL_GET_FASTINT(tv); - } -#endif - d = coerce_func(thr, tv); - - /* XXX: fastint? */ - - /* Relookup in case coerce_func() has side effects, e.g. ends up coercing an object */ - tv = duk_require_tval(thr, idx); - DUK_TVAL_SET_NUMBER_UPDREF(thr, tv, d); /* side effects */ - return d; -} - -DUK_EXTERNAL duk_int_t duk_to_int(duk_hthread *thr, duk_idx_t idx) { - /* Value coercion (in stack): ToInteger(), E5 Section 9.4, - * API return value coercion: custom. - */ - DUK_ASSERT_API_ENTRY(thr); - (void) duk__to_int_uint_helper(thr, idx, duk_js_tointeger); - return (duk_int_t) duk__api_coerce_d2i(thr, idx, 0 /*def_value*/, 0 /*require*/); -} - -DUK_EXTERNAL duk_uint_t duk_to_uint(duk_hthread *thr, duk_idx_t idx) { - /* Value coercion (in stack): ToInteger(), E5 Section 9.4, - * API return value coercion: custom. - */ - DUK_ASSERT_API_ENTRY(thr); - (void) duk__to_int_uint_helper(thr, idx, duk_js_tointeger); - return (duk_uint_t) duk__api_coerce_d2ui(thr, idx, 0 /*def_value*/, 0 /*require*/); -} - -DUK_EXTERNAL duk_int32_t duk_to_int32(duk_hthread *thr, duk_idx_t idx) { - duk_tval *tv; - duk_int32_t ret; - - DUK_ASSERT_API_ENTRY(thr); - - tv = duk_require_tval(thr, idx); - DUK_ASSERT(tv != NULL); - ret = duk_js_toint32(thr, tv); - - /* Relookup in case coerce_func() has side effects, e.g. ends up coercing an object */ - tv = duk_require_tval(thr, idx); - DUK_TVAL_SET_I32_UPDREF(thr, tv, ret); /* side effects */ - return ret; -} - -DUK_EXTERNAL duk_uint32_t duk_to_uint32(duk_hthread *thr, duk_idx_t idx) { - duk_tval *tv; - duk_uint32_t ret; - - DUK_ASSERT_API_ENTRY(thr); - - tv = duk_require_tval(thr, idx); - DUK_ASSERT(tv != NULL); - ret = duk_js_touint32(thr, tv); - - /* Relookup in case coerce_func() has side effects, e.g. ends up coercing an object */ - tv = duk_require_tval(thr, idx); - DUK_TVAL_SET_U32_UPDREF(thr, tv, ret); /* side effects */ - return ret; -} - -DUK_EXTERNAL duk_uint16_t duk_to_uint16(duk_hthread *thr, duk_idx_t idx) { - duk_tval *tv; - duk_uint16_t ret; - - DUK_ASSERT_API_ENTRY(thr); - - tv = duk_require_tval(thr, idx); - DUK_ASSERT(tv != NULL); - ret = duk_js_touint16(thr, tv); - - /* Relookup in case coerce_func() has side effects, e.g. ends up coercing an object */ - tv = duk_require_tval(thr, idx); - DUK_TVAL_SET_U32_UPDREF(thr, tv, ret); /* side effects */ - return ret; -} - -#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) -/* Special coercion for Uint8ClampedArray. */ -DUK_INTERNAL duk_uint8_t duk_to_uint8clamped(duk_hthread *thr, duk_idx_t idx) { - duk_double_t d; - duk_double_t t; - duk_uint8_t ret; - - DUK_ASSERT_API_ENTRY(thr); - - /* XXX: Simplify this algorithm, should be possible to come up with - * a shorter and faster algorithm by inspecting IEEE representation - * directly. - */ - - d = duk_to_number(thr, idx); - if (d <= 0.0) { - return 0; - } else if (d >= 255) { - return 255; - } else if (DUK_ISNAN(d)) { - /* Avoid NaN-to-integer coercion as it is compiler specific. */ - return 0; - } - - t = d - DUK_FLOOR(d); - if (duk_double_equals(t, 0.5)) { - /* Exact halfway, round to even. */ - ret = (duk_uint8_t) d; - ret = (ret + 1) & 0xfe; /* Example: d=3.5, t=0.5 -> ret = (3 + 1) & 0xfe = 4 & 0xfe = 4 - * Example: d=4.5, t=0.5 -> ret = (4 + 1) & 0xfe = 5 & 0xfe = 4 - */ - } else { - /* Not halfway, round to nearest. */ - ret = (duk_uint8_t) (d + 0.5); - } - return ret; -} -#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ - -DUK_EXTERNAL const char *duk_to_lstring(duk_hthread *thr, duk_idx_t idx, duk_size_t *out_len) { - DUK_ASSERT_API_ENTRY(thr); - - (void) duk_to_string(thr, idx); - DUK_ASSERT(duk_is_string(thr, idx)); - return duk_require_lstring(thr, idx, out_len); -} - -DUK_LOCAL duk_ret_t duk__safe_to_string_raw(duk_hthread *thr, void *udata) { - DUK_CTX_ASSERT_VALID(thr); - DUK_UNREF(udata); - - (void) duk_to_string(thr, -1); - return 1; -} - -DUK_EXTERNAL const char *duk_safe_to_lstring(duk_hthread *thr, duk_idx_t idx, duk_size_t *out_len) { - DUK_ASSERT_API_ENTRY(thr); - - idx = duk_require_normalize_index(thr, idx); - - /* We intentionally ignore the duk_safe_call() return value and only - * check the output type. This way we don't also need to check that - * the returned value is indeed a string in the success case. - */ - - duk_dup(thr, idx); - (void) duk_safe_call(thr, duk__safe_to_string_raw, NULL /*udata*/, 1 /*nargs*/, 1 /*nrets*/); - if (!duk_is_string(thr, -1)) { - /* Error: try coercing error to string once. */ - (void) duk_safe_call(thr, duk__safe_to_string_raw, NULL /*udata*/, 1 /*nargs*/, 1 /*nrets*/); - if (!duk_is_string(thr, -1)) { - /* Double error */ - duk_pop_unsafe(thr); - duk_push_hstring_stridx(thr, DUK_STRIDX_UC_ERROR); - } else { - ; - } - } else { - /* String; may be a symbol, accepted. */ - ; - } - DUK_ASSERT(duk_is_string(thr, -1)); - - duk_replace(thr, idx); - DUK_ASSERT(duk_get_string(thr, idx) != NULL); - return duk_get_lstring(thr, idx, out_len); -} - -DUK_EXTERNAL const char *duk_to_stacktrace(duk_hthread *thr, duk_idx_t idx) { - DUK_ASSERT_API_ENTRY(thr); - idx = duk_require_normalize_index(thr, idx); - - /* The expected argument to the call is an Error object. The stack - * trace is extracted without an inheritance-based instanceof check - * so that one can also extract the stack trace of a foreign error - * created in another Realm. Accept only a string .stack property. - */ - if (duk_is_object(thr, idx)) { - (void) duk_get_prop_string(thr, idx, "stack"); - if (duk_is_string(thr, -1)) { - duk_replace(thr, idx); - } else { - duk_pop(thr); - } - } - - return duk_to_string(thr, idx); -} - -DUK_LOCAL duk_ret_t duk__safe_to_stacktrace_raw(duk_hthread *thr, void *udata) { - DUK_CTX_ASSERT_VALID(thr); - DUK_UNREF(udata); - - (void) duk_to_stacktrace(thr, -1); - - return 1; -} - -DUK_EXTERNAL const char *duk_safe_to_stacktrace(duk_hthread *thr, duk_idx_t idx) { - duk_int_t rc; - - DUK_ASSERT_API_ENTRY(thr); - idx = duk_require_normalize_index(thr, idx); - - duk_dup(thr, idx); - rc = duk_safe_call(thr, duk__safe_to_stacktrace_raw, NULL /*udata*/, 1 /*nargs*/, 1 /*nrets*/); - if (rc != 0) { - /* Coercion failed. Try to coerce the coercion itself error - * to a stack trace once. If that also fails, return a fixed, - * preallocated 'Error' string to avoid potential infinite loop. - */ - rc = duk_safe_call(thr, duk__safe_to_stacktrace_raw, NULL /*udata*/, 1 /*nargs*/, 1 /*nrets*/); - if (rc != 0) { - duk_pop_unsafe(thr); - duk_push_hstring_stridx(thr, DUK_STRIDX_UC_ERROR); - } - } - duk_replace(thr, idx); - - return duk_get_string(thr, idx); -} - -DUK_INTERNAL duk_hstring *duk_to_property_key_hstring(duk_hthread *thr, duk_idx_t idx) { - duk_hstring *h; - - DUK_ASSERT_API_ENTRY(thr); - - duk_to_primitive(thr, idx, DUK_HINT_STRING); /* needed for e.g. Symbol objects */ - h = duk_get_hstring(thr, idx); - if (h == NULL) { - /* The "is string?" check may seem unnecessary, but as things - * are duk_to_hstring() invokes ToString() which fails for - * symbols. But since symbols are already strings for Duktape - * C API, we check for that before doing the coercion. - */ - h = duk_to_hstring(thr, idx); - } - DUK_ASSERT(h != NULL); - return h; -} - -#if defined(DUK_USE_DEBUGGER_SUPPORT) /* only needed by debugger for now */ -DUK_INTERNAL duk_hstring *duk_safe_to_hstring(duk_hthread *thr, duk_idx_t idx) { - DUK_ASSERT_API_ENTRY(thr); - - (void) duk_safe_to_string(thr, idx); - DUK_ASSERT(duk_is_string(thr, idx)); - DUK_ASSERT(duk_get_hstring(thr, idx) != NULL); - return duk_known_hstring(thr, idx); -} -#endif - -/* Push Object.prototype.toString() output for 'tv'. */ -DUK_INTERNAL void duk_push_class_string_tval(duk_hthread *thr, duk_tval *tv, duk_bool_t avoid_side_effects) { - duk_hobject *h_obj; - duk_small_uint_t classnum; - duk_small_uint_t stridx; - duk_tval tv_tmp; - - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT(tv != NULL); - - /* Stabilize 'tv', duk_push_literal() may trigger side effects. */ - DUK_TVAL_SET_TVAL(&tv_tmp, tv); - tv = &tv_tmp; - - /* Conceptually for any non-undefined/null value we should do a - * ToObject() coercion and look up @@toStringTag (from the object - * prototype) to see if a custom result should be used, with the - * exception of Arrays which are handled specially first. - * - * We'd like to avoid the actual conversion, but even for primitive - * types the prototype may have @@toStringTag. What's worse, the - * @@toStringTag property may be a getter that must get the object - * coerced value (not the prototype) as its 'this' binding. - * - * For now, do an actual object coercion. This could be avoided by - * doing a side effect free lookup to see if a getter would be invoked. - * If not, the value can be read directly and the object coercion could - * be avoided. This may not be worth it in practice, because - * Object.prototype.toString() is usually not performance critical. - */ - - duk_push_literal(thr, "[object "); /* -> [ ... "[object" ] */ - - switch (DUK_TVAL_GET_TAG(tv)) { - case DUK_TAG_UNUSED: /* Treat like 'undefined', shouldn't happen. */ - case DUK_TAG_UNDEFINED: { - duk_push_hstring_stridx(thr, DUK_STRIDX_UC_UNDEFINED); - goto finish; - } - case DUK_TAG_NULL: { - duk_push_hstring_stridx(thr, DUK_STRIDX_UC_NULL); - goto finish; - } - } - - duk_push_tval(thr, tv); - tv = NULL; /* Invalidated by ToObject(). */ - h_obj = duk_to_hobject(thr, -1); - DUK_ASSERT(h_obj != NULL); - if (duk_js_isarray_hobject(h_obj)) { - stridx = DUK_STRIDX_UC_ARRAY; - } else { - /* [ ... "[object" obj ] */ - -#if defined(DUK_USE_SYMBOL_BUILTIN) - /* XXX: better handling with avoid_side_effects == 1; lookup tval - * without Proxy or getter side effects, and use it in sanitized - * form if it's a string. - */ - if (!avoid_side_effects) { - (void) duk_get_prop_stridx(thr, -1, DUK_STRIDX_WELLKNOWN_SYMBOL_TO_STRING_TAG); - if (duk_is_string_notsymbol(thr, -1)) { - duk_remove_m2(thr); - goto finish; - } - duk_pop_unsafe(thr); - } -#else - DUK_UNREF(avoid_side_effects); -#endif - - classnum = DUK_HOBJECT_GET_CLASS_NUMBER(h_obj); - stridx = DUK_HOBJECT_CLASS_NUMBER_TO_STRIDX(classnum); - } - duk_pop_unsafe(thr); - duk_push_hstring_stridx(thr, stridx); - -finish: - /* [ ... "[object" tag ] */ - duk_push_literal(thr, "]"); - duk_concat(thr, 3); /* [ ... "[object" tag "]" ] -> [ ... res ] */ -} - -/* XXX: other variants like uint, u32 etc */ -DUK_INTERNAL duk_int_t -duk_to_int_clamped_raw(duk_hthread *thr, duk_idx_t idx, duk_int_t minval, duk_int_t maxval, duk_bool_t *out_clamped) { - duk_tval *tv; - duk_tval tv_tmp; - duk_double_t d, dmin, dmax; - duk_int_t res; - duk_bool_t clamped = 0; - - DUK_ASSERT_API_ENTRY(thr); - - tv = duk_require_tval(thr, idx); - DUK_ASSERT(tv != NULL); - d = duk_js_tointeger(thr, tv); /* E5 Section 9.4, ToInteger() */ - - dmin = (duk_double_t) minval; - dmax = (duk_double_t) maxval; - - if (d < dmin) { - clamped = 1; - res = minval; - d = dmin; - } else if (d > dmax) { - clamped = 1; - res = maxval; - d = dmax; - } else { - res = (duk_int_t) d; - } - DUK_UNREF(d); /* SCANBUILD: with suitable dmin/dmax limits 'd' is unused */ - /* 'd' and 'res' agree here */ - - /* Relookup in case duk_js_tointeger() ends up e.g. coercing an object. */ - tv = duk_get_tval(thr, idx); - DUK_ASSERT(tv != NULL); /* not popped by side effect */ - DUK_TVAL_SET_TVAL(&tv_tmp, tv); -#if defined(DUK_USE_FASTINT) -#if (DUK_INT_MAX <= 0x7fffffffL) - DUK_TVAL_SET_I32(tv, res); -#else - /* Clamping needed if duk_int_t is 64 bits. */ - if (res >= DUK_FASTINT_MIN && res <= DUK_FASTINT_MAX) { - DUK_TVAL_SET_FASTINT(tv, res); - } else { - DUK_TVAL_SET_NUMBER(tv, d); - } -#endif -#else - DUK_TVAL_SET_NUMBER(tv, d); /* no need to incref */ -#endif - DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */ - - if (out_clamped) { - *out_clamped = clamped; - } else { - /* coerced value is updated to value stack even when RangeError thrown */ - if (clamped) { - DUK_ERROR_RANGE(thr, DUK_STR_NUMBER_OUTSIDE_RANGE); - DUK_WO_NORETURN(return 0;); - } - } - - return res; -} - -DUK_INTERNAL duk_int_t duk_to_int_clamped(duk_hthread *thr, duk_idx_t idx, duk_idx_t minval, duk_idx_t maxval) { - duk_bool_t dummy; - - DUK_ASSERT_API_ENTRY(thr); - - return duk_to_int_clamped_raw(thr, idx, minval, maxval, &dummy); -} - -DUK_INTERNAL duk_int_t duk_to_int_check_range(duk_hthread *thr, duk_idx_t idx, duk_int_t minval, duk_int_t maxval) { - DUK_ASSERT_API_ENTRY(thr); - return duk_to_int_clamped_raw(thr, idx, minval, maxval, NULL); /* out_clamped==NULL -> RangeError if outside range */ -} - -DUK_EXTERNAL const char *duk_to_string(duk_hthread *thr, duk_idx_t idx) { - duk_tval *tv; - - DUK_ASSERT_API_ENTRY(thr); - - idx = duk_require_normalize_index(thr, idx); - tv = DUK_GET_TVAL_POSIDX(thr, idx); - DUK_ASSERT(tv != NULL); - - switch (DUK_TVAL_GET_TAG(tv)) { - case DUK_TAG_UNDEFINED: { - duk_push_hstring_stridx(thr, DUK_STRIDX_LC_UNDEFINED); - break; - } - case DUK_TAG_NULL: { - duk_push_hstring_stridx(thr, DUK_STRIDX_LC_NULL); - break; - } - case DUK_TAG_BOOLEAN: { - if (DUK_TVAL_GET_BOOLEAN(tv)) { - duk_push_hstring_stridx(thr, DUK_STRIDX_TRUE); - } else { - duk_push_hstring_stridx(thr, DUK_STRIDX_FALSE); - } - break; - } - case DUK_TAG_STRING: { - /* Nop for actual strings, TypeError for Symbols. - * Because various internals rely on ToString() coercion of - * internal strings, -allow- (NOP) string coercion for hidden - * symbols. - */ -#if 1 - duk_hstring *h; - h = DUK_TVAL_GET_STRING(tv); - DUK_ASSERT(h != NULL); - if (DUK_UNLIKELY(DUK_HSTRING_HAS_SYMBOL(h))) { - DUK_ERROR_TYPE(thr, DUK_STR_CANNOT_STRING_COERCE_SYMBOL); - DUK_WO_NORETURN(goto skip_replace;); - } else { - goto skip_replace; - } -#else - goto skip_replace; -#endif - break; - } - case DUK_TAG_BUFFER: /* Go through Uint8Array.prototype.toString() for coercion. */ - case DUK_TAG_OBJECT: { - /* Plain buffers: go through ArrayBuffer.prototype.toString() - * for coercion. - * - * Symbol objects: duk_to_primitive() results in a plain symbol - * value, and duk_to_string() then causes a TypeError. - */ - duk_to_primitive(thr, idx, DUK_HINT_STRING); - DUK_ASSERT(!duk_is_buffer(thr, idx)); /* ToPrimitive() must guarantee */ - DUK_ASSERT(!duk_is_object(thr, idx)); - return duk_to_string(thr, idx); /* Note: recursive call */ - } - case DUK_TAG_POINTER: { - void *ptr = DUK_TVAL_GET_POINTER(tv); - if (ptr != NULL) { - duk_push_sprintf(thr, DUK_STR_FMT_PTR, (void *) ptr); - } else { - /* Represent a null pointer as 'null' to be consistent with - * the JX format variant. Native '%p' format for a NULL - * pointer may be e.g. '(nil)'. - */ - duk_push_hstring_stridx(thr, DUK_STRIDX_LC_NULL); - } - break; - } - case DUK_TAG_LIGHTFUNC: { - /* Should match Function.prototype.toString() */ - duk_push_lightfunc_tostring(thr, tv); - break; - } -#if defined(DUK_USE_FASTINT) - case DUK_TAG_FASTINT: -#endif - default: { - /* number */ - DUK_ASSERT(!DUK_TVAL_IS_UNUSED(tv)); - DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv)); - duk_push_tval(thr, tv); - duk_numconv_stringify(thr, 10 /*radix*/, 0 /*precision:shortest*/, 0 /*force_exponential*/); - break; - } - } - - duk_replace(thr, idx); - -skip_replace: - DUK_ASSERT(duk_is_string(thr, idx)); - return duk_require_string(thr, idx); -} - -DUK_INTERNAL duk_hstring *duk_to_hstring(duk_hthread *thr, duk_idx_t idx) { - duk_hstring *ret; - - DUK_ASSERT_API_ENTRY(thr); - - duk_to_string(thr, idx); - ret = duk_get_hstring(thr, idx); - DUK_ASSERT(ret != NULL); - return ret; -} - -DUK_INTERNAL duk_hstring *duk_to_hstring_m1(duk_hthread *thr) { - DUK_ASSERT_API_ENTRY(thr); - return duk_to_hstring(thr, -1); -} - -DUK_INTERNAL duk_hstring *duk_to_hstring_acceptsymbol(duk_hthread *thr, duk_idx_t idx) { - duk_hstring *ret; - - DUK_ASSERT_API_ENTRY(thr); - - ret = duk_get_hstring(thr, idx); - if (DUK_UNLIKELY(ret && DUK_HSTRING_HAS_SYMBOL(ret))) { - return ret; - } - return duk_to_hstring(thr, idx); -} - -/* Convert a plain buffer or any buffer object into a string, using the buffer - * bytes 1:1 in the internal string representation. For views the active byte - * slice (not element slice interpreted as an initializer) is used. This is - * necessary in Duktape 2.x because ToString(plainBuffer) no longer creates a - * string with the same bytes as in the buffer but rather (usually) - * '[object ArrayBuffer]'. - */ -DUK_EXTERNAL const char *duk_buffer_to_string(duk_hthread *thr, duk_idx_t idx) { - void *ptr_src; - duk_size_t len; - const char *res; - - DUK_ASSERT_API_ENTRY(thr); - - idx = duk_require_normalize_index(thr, idx); - - ptr_src = duk_require_buffer_data(thr, idx, &len); - DUK_ASSERT(ptr_src != NULL || len == 0); - - res = duk_push_lstring(thr, (const char *) ptr_src, len); - duk_replace(thr, idx); - return res; -} - -DUK_EXTERNAL void *duk_to_buffer_raw(duk_hthread *thr, duk_idx_t idx, duk_size_t *out_size, duk_uint_t mode) { - duk_hbuffer *h_buf; - const duk_uint8_t *src_data; - duk_size_t src_size; - duk_uint8_t *dst_data; - - DUK_ASSERT_API_ENTRY(thr); - - idx = duk_require_normalize_index(thr, idx); - - h_buf = duk_get_hbuffer(thr, idx); - if (h_buf != NULL) { - /* Buffer is kept as is, with the fixed/dynamic nature of the - * buffer only changed if requested. An external buffer - * is converted into a non-external dynamic buffer in a - * duk_to_dynamic_buffer() call. - */ - duk_uint_t tmp; - duk_uint8_t *tmp_ptr; - - tmp_ptr = (duk_uint8_t *) DUK_HBUFFER_GET_DATA_PTR(thr->heap, h_buf); - src_data = (const duk_uint8_t *) tmp_ptr; - src_size = DUK_HBUFFER_GET_SIZE(h_buf); - - tmp = (DUK_HBUFFER_HAS_DYNAMIC(h_buf) ? DUK_BUF_MODE_DYNAMIC : DUK_BUF_MODE_FIXED); - if ((tmp == mode && !DUK_HBUFFER_HAS_EXTERNAL(h_buf)) || mode == DUK_BUF_MODE_DONTCARE) { - /* Note: src_data may be NULL if input is a zero-size - * dynamic buffer. - */ - dst_data = tmp_ptr; - goto skip_copy; - } - } else { - /* Non-buffer value is first ToString() coerced, then converted - * to a buffer (fixed buffer is used unless a dynamic buffer is - * explicitly requested). Symbols are rejected with a TypeError. - * XXX: C API could maybe allow symbol-to-buffer coercion? - */ - src_data = (const duk_uint8_t *) duk_to_lstring(thr, idx, &src_size); - } - - dst_data = (duk_uint8_t *) duk_push_buffer(thr, src_size, (mode == DUK_BUF_MODE_DYNAMIC) /*dynamic*/); - /* dst_data may be NULL if size is zero. */ - duk_memcpy_unsafe((void *) dst_data, (const void *) src_data, (size_t) src_size); - - duk_replace(thr, idx); -skip_copy: - - if (out_size) { - *out_size = src_size; - } - return dst_data; -} - -DUK_EXTERNAL void *duk_to_pointer(duk_hthread *thr, duk_idx_t idx) { - duk_tval *tv; - void *res; - - DUK_ASSERT_API_ENTRY(thr); - - idx = duk_require_normalize_index(thr, idx); - tv = DUK_GET_TVAL_POSIDX(thr, idx); - DUK_ASSERT(tv != NULL); - - switch (DUK_TVAL_GET_TAG(tv)) { - case DUK_TAG_UNDEFINED: - case DUK_TAG_NULL: - case DUK_TAG_BOOLEAN: - res = NULL; - break; - case DUK_TAG_POINTER: - res = DUK_TVAL_GET_POINTER(tv); - break; - case DUK_TAG_STRING: - case DUK_TAG_OBJECT: - case DUK_TAG_BUFFER: - /* Heap allocated: return heap pointer which is NOT useful - * for the caller, except for debugging. - */ - res = (void *) DUK_TVAL_GET_HEAPHDR(tv); - break; - case DUK_TAG_LIGHTFUNC: - /* Function pointers do not always cast correctly to void * - * (depends on memory and segmentation model for instance), - * so they coerce to NULL. - */ - res = NULL; - break; -#if defined(DUK_USE_FASTINT) - case DUK_TAG_FASTINT: -#endif - default: - /* number */ - DUK_ASSERT(!DUK_TVAL_IS_UNUSED(tv)); - DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv)); - res = NULL; - break; - } - - duk_push_pointer(thr, res); - duk_replace(thr, idx); - return res; -} - -DUK_LOCAL void duk__push_func_from_lightfunc(duk_hthread *thr, duk_c_function func, duk_small_uint_t lf_flags) { - duk_idx_t nargs; - duk_uint_t flags = 0; /* shared flags for a subset of types */ - duk_small_uint_t lf_len; - duk_hnatfunc *nf; - - nargs = (duk_idx_t) DUK_LFUNC_FLAGS_GET_NARGS(lf_flags); - if (nargs == DUK_LFUNC_NARGS_VARARGS) { - nargs = (duk_idx_t) DUK_VARARGS; - } - - flags = DUK_HOBJECT_FLAG_EXTENSIBLE | DUK_HOBJECT_FLAG_CONSTRUCTABLE | DUK_HOBJECT_FLAG_CALLABLE | - DUK_HOBJECT_FLAG_FASTREFS | DUK_HOBJECT_FLAG_NATFUNC | DUK_HOBJECT_FLAG_NEWENV | DUK_HOBJECT_FLAG_STRICT | - DUK_HOBJECT_FLAG_NOTAIL | DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_FUNCTION); - (void) duk__push_c_function_raw(thr, func, nargs, flags, DUK_BIDX_NATIVE_FUNCTION_PROTOTYPE); - - lf_len = DUK_LFUNC_FLAGS_GET_LENGTH(lf_flags); - if ((duk_idx_t) lf_len != nargs) { - /* Explicit length is only needed if it differs from 'nargs'. */ - duk_push_int(thr, (duk_int_t) lf_len); - duk_xdef_prop_stridx_short(thr, -2, DUK_STRIDX_LENGTH, DUK_PROPDESC_FLAGS_NONE); - } - -#if defined(DUK_USE_FUNC_NAME_PROPERTY) - duk_push_lightfunc_name_raw(thr, func, lf_flags); - duk_xdef_prop_stridx_short(thr, -2, DUK_STRIDX_NAME, DUK_PROPDESC_FLAGS_C); -#endif - - nf = duk_known_hnatfunc(thr, -1); - nf->magic = (duk_int16_t) DUK_LFUNC_FLAGS_GET_MAGIC(lf_flags); -} - -DUK_EXTERNAL void duk_to_object(duk_hthread *thr, duk_idx_t idx) { - duk_tval *tv; - duk_uint_t flags = 0; /* shared flags for a subset of types */ - duk_small_int_t proto = 0; - - DUK_ASSERT_API_ENTRY(thr); - - idx = duk_require_normalize_index(thr, idx); - tv = DUK_GET_TVAL_POSIDX(thr, idx); - DUK_ASSERT(tv != NULL); - - switch (DUK_TVAL_GET_TAG(tv)) { -#if !defined(DUK_USE_BUFFEROBJECT_SUPPORT) - case DUK_TAG_BUFFER: /* With no bufferobject support, don't object coerce. */ -#endif - case DUK_TAG_UNDEFINED: - case DUK_TAG_NULL: { - DUK_ERROR_TYPE(thr, DUK_STR_NOT_OBJECT_COERCIBLE); - DUK_WO_NORETURN(return;); - break; - } - case DUK_TAG_BOOLEAN: { - flags = - DUK_HOBJECT_FLAG_EXTENSIBLE | DUK_HOBJECT_FLAG_FASTREFS | DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_BOOLEAN); - proto = DUK_BIDX_BOOLEAN_PROTOTYPE; - goto create_object; - } - case DUK_TAG_STRING: { - duk_hstring *h; - h = DUK_TVAL_GET_STRING(tv); - DUK_ASSERT(h != NULL); - if (DUK_UNLIKELY(DUK_HSTRING_HAS_SYMBOL(h))) { - flags = DUK_HOBJECT_FLAG_EXTENSIBLE | DUK_HOBJECT_FLAG_FASTREFS | - DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_SYMBOL); - proto = DUK_BIDX_SYMBOL_PROTOTYPE; - } else { - flags = DUK_HOBJECT_FLAG_EXTENSIBLE | DUK_HOBJECT_FLAG_FASTREFS | DUK_HOBJECT_FLAG_EXOTIC_STRINGOBJ | - DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_STRING); - proto = DUK_BIDX_STRING_PROTOTYPE; - } - goto create_object; - } - case DUK_TAG_OBJECT: { - /* nop */ - break; - } -#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) - case DUK_TAG_BUFFER: { - /* A plain buffer object coerces to a full ArrayBuffer which - * is not fully transparent behavior (ToObject() should be a - * nop for an object). This behavior matches lightfuncs which - * also coerce to an equivalent Function object. There are - * also downsides to defining ToObject(plainBuffer) as a no-op; - * for example duk_to_hobject() could result in a NULL pointer. - */ - duk_hbuffer *h_buf; - - h_buf = DUK_TVAL_GET_BUFFER(tv); - DUK_ASSERT(h_buf != NULL); - duk_hbufobj_push_uint8array_from_plain(thr, h_buf); - goto replace_value; - } -#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ - case DUK_TAG_POINTER: { - flags = - DUK_HOBJECT_FLAG_EXTENSIBLE | DUK_HOBJECT_FLAG_FASTREFS | DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_POINTER); - proto = DUK_BIDX_POINTER_PROTOTYPE; - goto create_object; - } - case DUK_TAG_LIGHTFUNC: { - /* Lightfunc coerces to a Function instance with concrete - * properties. Since 'length' is virtual for Duktape/C - * functions, don't need to define that. The result is made - * extensible to mimic what happens to strings in object - * coercion: - * - * > Object.isExtensible(Object('foo')) - * true - */ - duk_small_uint_t lf_flags; - duk_c_function func; - - DUK_TVAL_GET_LIGHTFUNC(tv, func, lf_flags); - duk__push_func_from_lightfunc(thr, func, lf_flags); - goto replace_value; - } -#if defined(DUK_USE_FASTINT) - case DUK_TAG_FASTINT: -#endif - default: { - DUK_ASSERT(!DUK_TVAL_IS_UNUSED(tv)); - DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv)); - flags = - DUK_HOBJECT_FLAG_EXTENSIBLE | DUK_HOBJECT_FLAG_FASTREFS | DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_NUMBER); - proto = DUK_BIDX_NUMBER_PROTOTYPE; - goto create_object; - } - } - DUK_ASSERT(duk_is_object(thr, idx)); - return; - -create_object: - (void) duk_push_object_helper(thr, flags, proto); - - /* Note: Boolean prototype's internal value property is not writable, - * but duk_xdef_prop_stridx() disregards the write protection. Boolean - * instances are immutable. - * - * String and buffer special behaviors are already enabled which is not - * ideal, but a write to the internal value is not affected by them. - */ - duk_dup(thr, idx); - duk_xdef_prop_stridx_short(thr, -2, DUK_STRIDX_INT_VALUE, DUK_PROPDESC_FLAGS_NONE); - -replace_value: - duk_replace(thr, idx); - DUK_ASSERT(duk_is_object(thr, idx)); -} - -DUK_INTERNAL duk_hobject *duk_to_hobject(duk_hthread *thr, duk_idx_t idx) { - duk_hobject *ret; - - DUK_ASSERT_API_ENTRY(thr); - - duk_to_object(thr, idx); - ret = duk_known_hobject(thr, idx); - return ret; -} - -/* - * Type checking - */ - -DUK_LOCAL duk_bool_t duk__tag_check(duk_hthread *thr, duk_idx_t idx, duk_small_uint_t tag) { - duk_tval *tv; - - tv = duk_get_tval_or_unused(thr, idx); - DUK_ASSERT(tv != NULL); - return (DUK_TVAL_GET_TAG(tv) == tag); -} - -DUK_LOCAL duk_bool_t duk__obj_flag_any_default_false(duk_hthread *thr, duk_idx_t idx, duk_uint_t flag_mask) { - duk_hobject *obj; - - DUK_ASSERT_API_ENTRY(thr); - - obj = duk_get_hobject(thr, idx); - if (obj) { - return (DUK_HEAPHDR_CHECK_FLAG_BITS((duk_heaphdr *) obj, flag_mask) ? 1 : 0); - } - return 0; -} - -DUK_INTERNAL duk_int_t duk_get_type_tval(duk_tval *tv) { - DUK_ASSERT(tv != NULL); - -#if defined(DUK_USE_PACKED_TVAL) - switch (DUK_TVAL_GET_TAG(tv)) { - case DUK_TAG_UNUSED: - return DUK_TYPE_NONE; - case DUK_TAG_UNDEFINED: - return DUK_TYPE_UNDEFINED; - case DUK_TAG_NULL: - return DUK_TYPE_NULL; - case DUK_TAG_BOOLEAN: - return DUK_TYPE_BOOLEAN; - case DUK_TAG_STRING: - return DUK_TYPE_STRING; - case DUK_TAG_OBJECT: - return DUK_TYPE_OBJECT; - case DUK_TAG_BUFFER: - return DUK_TYPE_BUFFER; - case DUK_TAG_POINTER: - return DUK_TYPE_POINTER; - case DUK_TAG_LIGHTFUNC: - return DUK_TYPE_LIGHTFUNC; -#if defined(DUK_USE_FASTINT) - case DUK_TAG_FASTINT: -#endif - default: - /* Note: number has no explicit tag (in 8-byte representation) */ - DUK_ASSERT(!DUK_TVAL_IS_UNUSED(tv)); - DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv)); - return DUK_TYPE_NUMBER; - } -#else /* DUK_USE_PACKED_TVAL */ - DUK_ASSERT(DUK_TVAL_IS_VALID_TAG(tv)); - DUK_ASSERT(sizeof(duk__type_from_tag) / sizeof(duk_uint_t) == DUK_TAG_MAX - DUK_TAG_MIN + 1); - return (duk_int_t) duk__type_from_tag[DUK_TVAL_GET_TAG(tv) - DUK_TAG_MIN]; -#endif /* DUK_USE_PACKED_TVAL */ -} - -DUK_EXTERNAL duk_int_t duk_get_type(duk_hthread *thr, duk_idx_t idx) { - duk_tval *tv; - - DUK_ASSERT_API_ENTRY(thr); - - tv = duk_get_tval_or_unused(thr, idx); - DUK_ASSERT(tv != NULL); - - return duk_get_type_tval(tv); -} - -#if defined(DUK_USE_VERBOSE_ERRORS) && defined(DUK_USE_PARANOID_ERRORS) -DUK_LOCAL const char * const duk__type_names[] = { "none", "undefined", "null", "boolean", "number", - "string", "object", "buffer", "pointer", "lightfunc" }; - -DUK_INTERNAL const char *duk_get_type_name(duk_hthread *thr, duk_idx_t idx) { - duk_int_t type_tag; - - DUK_ASSERT_API_ENTRY(thr); - - type_tag = duk_get_type(thr, idx); - DUK_ASSERT(type_tag >= DUK_TYPE_MIN && type_tag <= DUK_TYPE_MAX); - DUK_ASSERT(DUK_TYPE_MIN == 0 && sizeof(duk__type_names) / sizeof(const char *) == DUK_TYPE_MAX + 1); - - return duk__type_names[type_tag]; -} -#endif /* DUK_USE_VERBOSE_ERRORS && DUK_USE_PARANOID_ERRORS */ - -DUK_INTERNAL duk_small_uint_t duk_get_class_number(duk_hthread *thr, duk_idx_t idx) { - duk_tval *tv; - duk_hobject *obj; - - DUK_ASSERT_API_ENTRY(thr); - - tv = duk_get_tval_or_unused(thr, idx); - DUK_ASSERT(tv != NULL); - - switch (DUK_TVAL_GET_TAG(tv)) { - case DUK_TAG_OBJECT: - obj = DUK_TVAL_GET_OBJECT(tv); - DUK_ASSERT(obj != NULL); - return DUK_HOBJECT_GET_CLASS_NUMBER(obj); - case DUK_TAG_BUFFER: - /* Buffers behave like Uint8Array objects. */ - return DUK_HOBJECT_CLASS_UINT8ARRAY; - case DUK_TAG_LIGHTFUNC: - /* Lightfuncs behave like Function objects. */ - return DUK_HOBJECT_CLASS_FUNCTION; - default: - /* Primitive or UNUSED, no class number. */ - return DUK_HOBJECT_CLASS_NONE; - } -} - -DUK_EXTERNAL duk_bool_t duk_check_type(duk_hthread *thr, duk_idx_t idx, duk_int_t type) { - DUK_ASSERT_API_ENTRY(thr); - - return (duk_get_type(thr, idx) == type) ? 1 : 0; -} - -DUK_INTERNAL duk_uint_t duk_get_type_mask_tval(duk_tval *tv) { - DUK_ASSERT(tv != NULL); - -#if defined(DUK_USE_PACKED_TVAL) - switch (DUK_TVAL_GET_TAG(tv)) { - case DUK_TAG_UNUSED: - return DUK_TYPE_MASK_NONE; - case DUK_TAG_UNDEFINED: - return DUK_TYPE_MASK_UNDEFINED; - case DUK_TAG_NULL: - return DUK_TYPE_MASK_NULL; - case DUK_TAG_BOOLEAN: - return DUK_TYPE_MASK_BOOLEAN; - case DUK_TAG_STRING: - return DUK_TYPE_MASK_STRING; - case DUK_TAG_OBJECT: - return DUK_TYPE_MASK_OBJECT; - case DUK_TAG_BUFFER: - return DUK_TYPE_MASK_BUFFER; - case DUK_TAG_POINTER: - return DUK_TYPE_MASK_POINTER; - case DUK_TAG_LIGHTFUNC: - return DUK_TYPE_MASK_LIGHTFUNC; -#if defined(DUK_USE_FASTINT) - case DUK_TAG_FASTINT: -#endif - default: - /* Note: number has no explicit tag (in 8-byte representation) */ - DUK_ASSERT(!DUK_TVAL_IS_UNUSED(tv)); - DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv)); - return DUK_TYPE_MASK_NUMBER; - } -#else /* DUK_USE_PACKED_TVAL */ - DUK_ASSERT(DUK_TVAL_IS_VALID_TAG(tv)); - DUK_ASSERT(sizeof(duk__type_mask_from_tag) / sizeof(duk_uint_t) == DUK_TAG_MAX - DUK_TAG_MIN + 1); - return duk__type_mask_from_tag[DUK_TVAL_GET_TAG(tv) - DUK_TAG_MIN]; -#endif /* DUK_USE_PACKED_TVAL */ -} - -DUK_EXTERNAL duk_uint_t duk_get_type_mask(duk_hthread *thr, duk_idx_t idx) { - duk_tval *tv; - - DUK_ASSERT_API_ENTRY(thr); - - tv = duk_get_tval_or_unused(thr, idx); - DUK_ASSERT(tv != NULL); - - return duk_get_type_mask_tval(tv); -} - -DUK_EXTERNAL duk_bool_t duk_check_type_mask(duk_hthread *thr, duk_idx_t idx, duk_uint_t mask) { - DUK_ASSERT_API_ENTRY(thr); - - if (DUK_LIKELY((duk_get_type_mask(thr, idx) & mask) != 0U)) { - return 1; - } - if (mask & DUK_TYPE_MASK_THROW) { - DUK_ERROR_TYPE(thr, DUK_STR_UNEXPECTED_TYPE); - DUK_WO_NORETURN(return 0;); - } - return 0; -} - -DUK_EXTERNAL duk_bool_t duk_is_undefined(duk_hthread *thr, duk_idx_t idx) { - DUK_ASSERT_API_ENTRY(thr); - return duk__tag_check(thr, idx, DUK_TAG_UNDEFINED); -} - -DUK_EXTERNAL duk_bool_t duk_is_null(duk_hthread *thr, duk_idx_t idx) { - DUK_ASSERT_API_ENTRY(thr); - return duk__tag_check(thr, idx, DUK_TAG_NULL); -} - -DUK_EXTERNAL duk_bool_t duk_is_boolean(duk_hthread *thr, duk_idx_t idx) { - DUK_ASSERT_API_ENTRY(thr); - return duk__tag_check(thr, idx, DUK_TAG_BOOLEAN); -} - -DUK_EXTERNAL duk_bool_t duk_is_number(duk_hthread *thr, duk_idx_t idx) { - duk_tval *tv; - - DUK_ASSERT_API_ENTRY(thr); - - /* - * Number is special because it doesn't have a specific - * tag in the 8-byte representation. - */ - - /* XXX: shorter version for unpacked representation? */ - - tv = duk_get_tval_or_unused(thr, idx); - DUK_ASSERT(tv != NULL); - return DUK_TVAL_IS_NUMBER(tv); -} - -DUK_EXTERNAL duk_bool_t duk_is_nan(duk_hthread *thr, duk_idx_t idx) { - /* XXX: This will now return false for non-numbers, even though they would - * coerce to NaN (as a general rule). In particular, duk_get_number() - * returns a NaN for non-numbers, so should this function also return - * true for non-numbers? - */ - - duk_tval *tv; - - DUK_ASSERT_API_ENTRY(thr); - - tv = duk_get_tval_or_unused(thr, idx); - DUK_ASSERT(tv != NULL); - - /* XXX: for packed duk_tval an explicit "is number" check is unnecessary */ - if (!DUK_TVAL_IS_NUMBER(tv)) { - return 0; - } - return (duk_bool_t) DUK_ISNAN(DUK_TVAL_GET_NUMBER(tv)); -} - -DUK_EXTERNAL duk_bool_t duk_is_string(duk_hthread *thr, duk_idx_t idx) { - DUK_ASSERT_API_ENTRY(thr); - return duk__tag_check(thr, idx, DUK_TAG_STRING); -} - -DUK_INTERNAL duk_bool_t duk_is_string_notsymbol(duk_hthread *thr, duk_idx_t idx) { - DUK_ASSERT_API_ENTRY(thr); - return duk_get_hstring_notsymbol(thr, idx) != NULL; -} - -DUK_EXTERNAL duk_bool_t duk_is_object(duk_hthread *thr, duk_idx_t idx) { - DUK_ASSERT_API_ENTRY(thr); - return duk__tag_check(thr, idx, DUK_TAG_OBJECT); -} - -DUK_EXTERNAL duk_bool_t duk_is_buffer(duk_hthread *thr, duk_idx_t idx) { - DUK_ASSERT_API_ENTRY(thr); - return duk__tag_check(thr, idx, DUK_TAG_BUFFER); -} - -#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) -DUK_EXTERNAL duk_bool_t duk_is_buffer_data(duk_hthread *thr, duk_idx_t idx) { - duk_tval *tv; - - DUK_ASSERT_API_ENTRY(thr); - - tv = duk_get_tval_or_unused(thr, idx); - DUK_ASSERT(tv != NULL); - if (DUK_TVAL_IS_BUFFER(tv)) { - return 1; - } else if (DUK_TVAL_IS_OBJECT(tv)) { - duk_hobject *h = DUK_TVAL_GET_OBJECT(tv); - DUK_ASSERT(h != NULL); - if (DUK_HOBJECT_IS_BUFOBJ(h)) { - return 1; - } - } - return 0; -} -#else /* DUK_USE_BUFFEROBJECT_SUPPORT */ -DUK_EXTERNAL duk_bool_t duk_is_buffer_data(duk_hthread *thr, duk_idx_t idx) { - DUK_ASSERT_API_ENTRY(thr); - - return duk_is_buffer(thr, idx); -} - -#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ - -DUK_EXTERNAL duk_bool_t duk_is_pointer(duk_hthread *thr, duk_idx_t idx) { - DUK_ASSERT_API_ENTRY(thr); - return duk__tag_check(thr, idx, DUK_TAG_POINTER); -} - -DUK_EXTERNAL duk_bool_t duk_is_lightfunc(duk_hthread *thr, duk_idx_t idx) { - DUK_ASSERT_API_ENTRY(thr); - return duk__tag_check(thr, idx, DUK_TAG_LIGHTFUNC); -} - -DUK_EXTERNAL duk_bool_t duk_is_symbol(duk_hthread *thr, duk_idx_t idx) { - duk_hstring *h; - - DUK_ASSERT_API_ENTRY(thr); - h = duk_get_hstring(thr, idx); - /* Use DUK_LIKELY() here because caller may be more likely to type - * check an expected symbol than not. - */ - if (DUK_LIKELY(h != NULL && DUK_HSTRING_HAS_SYMBOL(h))) { - return 1; - } - return 0; -} - -/* IsArray(), returns true for Array instance or Proxy of Array instance. */ -DUK_EXTERNAL duk_bool_t duk_is_array(duk_hthread *thr, duk_idx_t idx) { - duk_tval *tv; - - DUK_ASSERT_API_ENTRY(thr); - - tv = duk_get_tval(thr, idx); - if (tv) { - return duk_js_isarray(tv); - } - return 0; -} - -DUK_EXTERNAL duk_bool_t duk_is_function(duk_hthread *thr, duk_idx_t idx) { - duk_tval *tv; - - DUK_ASSERT_API_ENTRY(thr); - - tv = duk_get_tval_or_unused(thr, idx); - if (DUK_TVAL_IS_OBJECT(tv)) { - duk_hobject *h; - h = DUK_TVAL_GET_OBJECT(tv); - DUK_ASSERT(h != NULL); - return DUK_HOBJECT_HAS_CALLABLE(h) ? 1 : 0; - } - if (DUK_TVAL_IS_LIGHTFUNC(tv)) { - return 1; - } - return 0; -} - -DUK_INTERNAL duk_bool_t duk_is_callable_tval(duk_hthread *thr, duk_tval *tv) { - DUK_ASSERT_API_ENTRY(thr); - - DUK_UNREF(thr); - - if (DUK_TVAL_IS_OBJECT(tv)) { - duk_hobject *h; - h = DUK_TVAL_GET_OBJECT(tv); - DUK_ASSERT(h != NULL); - return DUK_HOBJECT_HAS_CALLABLE(h) ? 1 : 0; - } - if (DUK_TVAL_IS_LIGHTFUNC(tv)) { - return 1; - } - return 0; -} - -DUK_EXTERNAL duk_bool_t duk_is_constructable(duk_hthread *thr, duk_idx_t idx) { - duk_tval *tv; - - DUK_ASSERT_API_ENTRY(thr); - - tv = duk_get_tval_or_unused(thr, idx); - if (DUK_TVAL_IS_OBJECT(tv)) { - duk_hobject *h; - h = DUK_TVAL_GET_OBJECT(tv); - DUK_ASSERT(h != NULL); - return DUK_HOBJECT_HAS_CONSTRUCTABLE(h) ? 1 : 0; - } - if (DUK_TVAL_IS_LIGHTFUNC(tv)) { - return 1; - } - return 0; -} - -DUK_EXTERNAL duk_bool_t duk_is_c_function(duk_hthread *thr, duk_idx_t idx) { - DUK_ASSERT_API_ENTRY(thr); - return duk__obj_flag_any_default_false(thr, idx, DUK_HOBJECT_FLAG_NATFUNC); -} - -DUK_EXTERNAL duk_bool_t duk_is_ecmascript_function(duk_hthread *thr, duk_idx_t idx) { - DUK_ASSERT_API_ENTRY(thr); - return duk__obj_flag_any_default_false(thr, idx, DUK_HOBJECT_FLAG_COMPFUNC); -} - -DUK_EXTERNAL duk_bool_t duk_is_bound_function(duk_hthread *thr, duk_idx_t idx) { - DUK_ASSERT_API_ENTRY(thr); - return duk__obj_flag_any_default_false(thr, idx, DUK_HOBJECT_FLAG_BOUNDFUNC); -} - -DUK_EXTERNAL duk_bool_t duk_is_thread(duk_hthread *thr, duk_idx_t idx) { - duk_hobject *obj; - - DUK_ASSERT_API_ENTRY(thr); - - obj = duk_get_hobject(thr, idx); - if (obj) { - return (DUK_HOBJECT_GET_CLASS_NUMBER(obj) == DUK_HOBJECT_CLASS_THREAD ? 1 : 0); - } - return 0; -} - -DUK_EXTERNAL duk_bool_t duk_is_fixed_buffer(duk_hthread *thr, duk_idx_t idx) { - duk_tval *tv; - - DUK_ASSERT_API_ENTRY(thr); - - tv = duk_get_tval_or_unused(thr, idx); - DUK_ASSERT(tv != NULL); - if (DUK_TVAL_IS_BUFFER(tv)) { - duk_hbuffer *h = DUK_TVAL_GET_BUFFER(tv); - DUK_ASSERT(h != NULL); - return (DUK_HBUFFER_HAS_DYNAMIC(h) ? 0 : 1); - } - return 0; -} - -DUK_EXTERNAL duk_bool_t duk_is_dynamic_buffer(duk_hthread *thr, duk_idx_t idx) { - duk_tval *tv; - - DUK_ASSERT_API_ENTRY(thr); - - tv = duk_get_tval_or_unused(thr, idx); - DUK_ASSERT(tv != NULL); - if (DUK_TVAL_IS_BUFFER(tv)) { - duk_hbuffer *h = DUK_TVAL_GET_BUFFER(tv); - DUK_ASSERT(h != NULL); - return (DUK_HBUFFER_HAS_DYNAMIC(h) && !DUK_HBUFFER_HAS_EXTERNAL(h) ? 1 : 0); - } - return 0; -} - -DUK_EXTERNAL duk_bool_t duk_is_external_buffer(duk_hthread *thr, duk_idx_t idx) { - duk_tval *tv; - - DUK_ASSERT_API_ENTRY(thr); - - tv = duk_get_tval_or_unused(thr, idx); - DUK_ASSERT(tv != NULL); - if (DUK_TVAL_IS_BUFFER(tv)) { - duk_hbuffer *h = DUK_TVAL_GET_BUFFER(tv); - DUK_ASSERT(h != NULL); - return (DUK_HBUFFER_HAS_DYNAMIC(h) && DUK_HBUFFER_HAS_EXTERNAL(h) ? 1 : 0); - } - return 0; -} - -DUK_EXTERNAL duk_errcode_t duk_get_error_code(duk_hthread *thr, duk_idx_t idx) { - duk_hobject *h; - duk_uint_t sanity; - - DUK_ASSERT_API_ENTRY(thr); - - h = duk_get_hobject(thr, idx); - - sanity = DUK_HOBJECT_PROTOTYPE_CHAIN_SANITY; - do { - if (!h) { - return DUK_ERR_NONE; - } - - /* XXX: something more convenient? */ - - if (h == thr->builtins[DUK_BIDX_EVAL_ERROR_PROTOTYPE]) { - return DUK_ERR_EVAL_ERROR; - } - if (h == thr->builtins[DUK_BIDX_RANGE_ERROR_PROTOTYPE]) { - return DUK_ERR_RANGE_ERROR; - } - if (h == thr->builtins[DUK_BIDX_REFERENCE_ERROR_PROTOTYPE]) { - return DUK_ERR_REFERENCE_ERROR; - } - if (h == thr->builtins[DUK_BIDX_SYNTAX_ERROR_PROTOTYPE]) { - return DUK_ERR_SYNTAX_ERROR; - } - if (h == thr->builtins[DUK_BIDX_TYPE_ERROR_PROTOTYPE]) { - return DUK_ERR_TYPE_ERROR; - } - if (h == thr->builtins[DUK_BIDX_URI_ERROR_PROTOTYPE]) { - return DUK_ERR_URI_ERROR; - } - if (h == thr->builtins[DUK_BIDX_ERROR_PROTOTYPE]) { - return DUK_ERR_ERROR; - } - - h = DUK_HOBJECT_GET_PROTOTYPE(thr->heap, h); - } while (--sanity > 0); - - return DUK_ERR_NONE; -} - -/* - * Pushers - */ - -DUK_INTERNAL void duk_push_tval(duk_hthread *thr, duk_tval *tv) { - duk_tval *tv_slot; - - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT(tv != NULL); - - DUK__CHECK_SPACE(); - tv_slot = thr->valstack_top++; - DUK_TVAL_SET_TVAL(tv_slot, tv); - DUK_TVAL_INCREF(thr, tv); /* no side effects */ -} - -DUK_EXTERNAL void duk_push_undefined(duk_hthread *thr) { - DUK_ASSERT_API_ENTRY(thr); - - DUK__CHECK_SPACE(); - - /* Because value stack init policy is 'undefined above top', - * we don't need to write, just assert. - */ - thr->valstack_top++; - DUK_ASSERT(DUK_TVAL_IS_UNDEFINED(thr->valstack_top - 1)); -} - -DUK_EXTERNAL void duk_push_null(duk_hthread *thr) { - duk_tval *tv_slot; - - DUK_ASSERT_API_ENTRY(thr); - DUK__CHECK_SPACE(); - tv_slot = thr->valstack_top++; - DUK_TVAL_SET_NULL(tv_slot); -} - -DUK_EXTERNAL void duk_push_boolean(duk_hthread *thr, duk_bool_t val) { - duk_tval *tv_slot; - duk_small_int_t b; - - DUK_ASSERT_API_ENTRY(thr); - DUK__CHECK_SPACE(); - b = (val ? 1 : 0); /* ensure value is 1 or 0 (not other non-zero) */ - tv_slot = thr->valstack_top++; - DUK_TVAL_SET_BOOLEAN(tv_slot, b); -} - -DUK_EXTERNAL void duk_push_true(duk_hthread *thr) { - duk_tval *tv_slot; - - DUK_ASSERT_API_ENTRY(thr); - DUK__CHECK_SPACE(); - tv_slot = thr->valstack_top++; - DUK_TVAL_SET_BOOLEAN_TRUE(tv_slot); -} - -DUK_EXTERNAL void duk_push_false(duk_hthread *thr) { - duk_tval *tv_slot; - - DUK_ASSERT_API_ENTRY(thr); - DUK__CHECK_SPACE(); - tv_slot = thr->valstack_top++; - DUK_TVAL_SET_BOOLEAN_FALSE(tv_slot); -} - -/* normalize NaN which may not match our canonical internal NaN */ -DUK_EXTERNAL void duk_push_number(duk_hthread *thr, duk_double_t val) { - duk_tval *tv_slot; - duk_double_union du; - - DUK_ASSERT_API_ENTRY(thr); - DUK__CHECK_SPACE(); - du.d = val; - DUK_DBLUNION_NORMALIZE_NAN_CHECK(&du); - tv_slot = thr->valstack_top++; - DUK_TVAL_SET_NUMBER(tv_slot, du.d); -} - -DUK_EXTERNAL void duk_push_int(duk_hthread *thr, duk_int_t val) { -#if defined(DUK_USE_FASTINT) - duk_tval *tv_slot; - - DUK_ASSERT_API_ENTRY(thr); - DUK__CHECK_SPACE(); - tv_slot = thr->valstack_top++; -#if DUK_INT_MAX <= 0x7fffffffL - DUK_TVAL_SET_I32(tv_slot, (duk_int32_t) val); -#else - if (val >= DUK_FASTINT_MIN && val <= DUK_FASTINT_MAX) { - DUK_TVAL_SET_FASTINT(tv_slot, (duk_int64_t) val); - } else { - duk_double_t = (duk_double_t) val; - DUK_TVAL_SET_NUMBER(tv_slot, d); - } -#endif -#else /* DUK_USE_FASTINT */ - duk_tval *tv_slot; - duk_double_t d; - - DUK_ASSERT_API_ENTRY(thr); - DUK__CHECK_SPACE(); - d = (duk_double_t) val; - tv_slot = thr->valstack_top++; - DUK_TVAL_SET_NUMBER(tv_slot, d); -#endif /* DUK_USE_FASTINT */ -} - -DUK_EXTERNAL void duk_push_uint(duk_hthread *thr, duk_uint_t val) { -#if defined(DUK_USE_FASTINT) - duk_tval *tv_slot; - - DUK_ASSERT_API_ENTRY(thr); - DUK__CHECK_SPACE(); - tv_slot = thr->valstack_top++; -#if DUK_UINT_MAX <= 0xffffffffUL - DUK_TVAL_SET_U32(tv_slot, (duk_uint32_t) val); -#else - if (val <= DUK_FASTINT_MAX) { /* val is unsigned so >= 0 */ - /* XXX: take advantage of val being unsigned, no need to mask */ - DUK_TVAL_SET_FASTINT(tv_slot, (duk_int64_t) val); - } else { - duk_double_t = (duk_double_t) val; - DUK_TVAL_SET_NUMBER(tv_slot, d); - } -#endif -#else /* DUK_USE_FASTINT */ - duk_tval *tv_slot; - duk_double_t d; - - DUK_ASSERT_API_ENTRY(thr); - DUK__CHECK_SPACE(); - d = (duk_double_t) val; - tv_slot = thr->valstack_top++; - DUK_TVAL_SET_NUMBER(tv_slot, d); -#endif /* DUK_USE_FASTINT */ -} - -DUK_EXTERNAL void duk_push_nan(duk_hthread *thr) { - duk_tval *tv_slot; - duk_double_union du; - - DUK_ASSERT_API_ENTRY(thr); - DUK__CHECK_SPACE(); - DUK_DBLUNION_SET_NAN(&du); - DUK_ASSERT(DUK_DBLUNION_IS_NORMALIZED(&du)); - tv_slot = thr->valstack_top++; - DUK_TVAL_SET_NUMBER(tv_slot, du.d); -} - -DUK_EXTERNAL const char *duk_push_lstring(duk_hthread *thr, const char *str, duk_size_t len) { - duk_hstring *h; - duk_tval *tv_slot; - - DUK_ASSERT_API_ENTRY(thr); - - /* Check stack before interning (avoid hanging temp). */ - DUK__CHECK_SPACE(); - - /* NULL with zero length represents an empty string; NULL with higher - * length is also now treated like an empty string although it is - * a bit dubious. This is unlike duk_push_string() which pushes a - * 'null' if the input string is a NULL. - */ - if (DUK_UNLIKELY(str == NULL)) { - len = 0U; - } - - /* Check for maximum string length. */ - if (DUK_UNLIKELY(len > DUK_HSTRING_MAX_BYTELEN)) { - DUK_ERROR_RANGE(thr, DUK_STR_STRING_TOO_LONG); - DUK_WO_NORETURN(return NULL;); - } - - h = duk_heap_strtable_intern_checked(thr, (const duk_uint8_t *) str, (duk_uint32_t) len); - DUK_ASSERT(h != NULL); - - tv_slot = thr->valstack_top++; - DUK_TVAL_SET_STRING(tv_slot, h); - DUK_HSTRING_INCREF(thr, h); /* no side effects */ - - return (const char *) DUK_HSTRING_GET_DATA(h); -} - -DUK_EXTERNAL const char *duk_push_string(duk_hthread *thr, const char *str) { - DUK_ASSERT_API_ENTRY(thr); - - if (str) { - return duk_push_lstring(thr, str, DUK_STRLEN(str)); - } else { - duk_push_null(thr); - return NULL; - } -} - -#if !defined(DUK_USE_PREFER_SIZE) -#if defined(DUK_USE_LITCACHE_SIZE) -DUK_EXTERNAL const char *duk_push_literal_raw(duk_hthread *thr, const char *str, duk_size_t len) { - duk_hstring *h; - duk_tval *tv_slot; - - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT(str != NULL); - DUK_ASSERT(str[len] == (char) 0); - - /* Check for maximum string length. */ - if (DUK_UNLIKELY(len > DUK_HSTRING_MAX_BYTELEN)) { - DUK_ERROR_RANGE(thr, DUK_STR_STRING_TOO_LONG); - DUK_WO_NORETURN(return NULL;); - } - - h = duk_heap_strtable_intern_literal_checked(thr, (const duk_uint8_t *) str, (duk_uint32_t) len); - DUK_ASSERT(h != NULL); - - tv_slot = thr->valstack_top++; - DUK_TVAL_SET_STRING(tv_slot, h); - DUK_HSTRING_INCREF(thr, h); /* no side effects */ - - return (const char *) DUK_HSTRING_GET_DATA(h); -} -#else /* DUK_USE_LITCACHE_SIZE */ -DUK_EXTERNAL const char *duk_push_literal_raw(duk_hthread *thr, const char *str, duk_size_t len) { - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT(str != NULL); - DUK_ASSERT(str[len] == (char) 0); - - return duk_push_lstring(thr, str, len); -} -#endif /* DUK_USE_LITCACHE_SIZE */ -#endif /* !DUK_USE_PREFER_SIZE */ - -DUK_EXTERNAL void duk_push_pointer(duk_hthread *thr, void *val) { - duk_tval *tv_slot; - - DUK_ASSERT_API_ENTRY(thr); - DUK__CHECK_SPACE(); - tv_slot = thr->valstack_top++; - DUK_TVAL_SET_POINTER(tv_slot, val); -} - -DUK_INTERNAL duk_hstring *duk_push_uint_to_hstring(duk_hthread *thr, duk_uint_t i) { - duk_hstring *h_tmp; - - DUK_ASSERT_API_ENTRY(thr); - - /* XXX: this could be a direct DUK_SPRINTF to a buffer followed by duk_push_string() */ - duk_push_uint(thr, (duk_uint_t) i); - h_tmp = duk_to_hstring_m1(thr); - DUK_ASSERT(h_tmp != NULL); - return h_tmp; -} - -DUK_LOCAL void duk__push_this_helper(duk_hthread *thr, duk_small_uint_t check_object_coercible) { - duk_tval *tv_slot; - - DUK__CHECK_SPACE(); - - DUK_ASSERT(DUK_TVAL_IS_UNDEFINED(thr->valstack_top)); /* because of valstack init policy */ - tv_slot = thr->valstack_top++; - - if (DUK_UNLIKELY(thr->callstack_curr == NULL)) { - if (check_object_coercible) { - goto type_error; - } - /* 'undefined' already on stack top */ - } else { - duk_tval *tv; - - /* 'this' binding is just before current activation's bottom */ - DUK_ASSERT(thr->valstack_bottom > thr->valstack); - tv = thr->valstack_bottom - 1; - if (check_object_coercible && (DUK_TVAL_IS_UNDEFINED(tv) || DUK_TVAL_IS_NULL(tv))) { - /* XXX: better macro for DUK_TVAL_IS_UNDEFINED_OR_NULL(tv) */ - goto type_error; - } - - DUK_TVAL_SET_TVAL(tv_slot, tv); - DUK_TVAL_INCREF(thr, tv); - } - return; - -type_error: - DUK_ERROR_TYPE(thr, DUK_STR_NOT_OBJECT_COERCIBLE); - DUK_WO_NORETURN(return;); -} - -DUK_EXTERNAL void duk_push_this(duk_hthread *thr) { - DUK_ASSERT_API_ENTRY(thr); - - duk__push_this_helper(thr, 0 /*check_object_coercible*/); -} - -DUK_INTERNAL void duk_push_this_check_object_coercible(duk_hthread *thr) { - DUK_ASSERT_API_ENTRY(thr); - - duk__push_this_helper(thr, 1 /*check_object_coercible*/); -} - -DUK_INTERNAL duk_hobject *duk_push_this_coercible_to_object(duk_hthread *thr) { - duk_hobject *h; - - DUK_ASSERT_API_ENTRY(thr); - - duk__push_this_helper(thr, 1 /*check_object_coercible*/); - h = duk_to_hobject(thr, -1); - DUK_ASSERT(h != NULL); - return h; -} - -DUK_INTERNAL duk_hstring *duk_push_this_coercible_to_string(duk_hthread *thr) { - DUK_ASSERT_API_ENTRY(thr); - - duk__push_this_helper(thr, 1 /*check_object_coercible*/); - return duk_to_hstring_m1(thr); /* This will reject all Symbol values; accepts Symbol objects. */ -} - -DUK_INTERNAL duk_tval *duk_get_borrowed_this_tval(duk_hthread *thr) { - DUK_ASSERT_API_ENTRY(thr); - - DUK_ASSERT(thr->callstack_top > 0); /* caller required to know */ - DUK_ASSERT(thr->callstack_curr != NULL); /* caller required to know */ - DUK_ASSERT(thr->valstack_bottom > thr->valstack); /* consequence of above */ - DUK_ASSERT(thr->valstack_bottom - 1 >= thr->valstack); /* 'this' binding exists */ - - return thr->valstack_bottom - 1; -} - -DUK_EXTERNAL void duk_push_new_target(duk_hthread *thr) { - duk_activation *act; - - DUK_ASSERT_API_ENTRY(thr); - - /* https://www.ecma-international.org/ecma-262/6.0/#sec-meta-properties-runtime-semantics-evaluation - * https://www.ecma-international.org/ecma-262/6.0/#sec-getnewtarget - * - * No newTarget support now, so as a first approximation - * use the resolved (non-bound) target function. - * - * Check CONSTRUCT flag from current function, or if running - * direct eval, from a non-direct-eval parent (with possibly - * more than one nested direct eval). An alternative to this - * would be to store [[NewTarget]] as a hidden symbol of the - * lexical scope, and then just look up that variable. - * - * Calls from the application will either be for an empty - * call stack, or a Duktape/C function as the top activation. - */ - - act = thr->callstack_curr; - for (;;) { - if (act == NULL) { - break; - } - - if (act->flags & DUK_ACT_FLAG_CONSTRUCT) { - duk_push_tval(thr, &act->tv_func); - return; - } else if (act->flags & DUK_ACT_FLAG_DIRECT_EVAL) { - act = act->parent; - } else { - break; - } - } - - duk_push_undefined(thr); -} - -DUK_EXTERNAL void duk_push_current_function(duk_hthread *thr) { - duk_activation *act; - - DUK_ASSERT_API_ENTRY(thr); - - act = thr->callstack_curr; - if (act != NULL) { - duk_push_tval(thr, &act->tv_func); - } else { - duk_push_undefined(thr); - } -} - -DUK_EXTERNAL void duk_push_current_thread(duk_hthread *thr) { - DUK_ASSERT_API_ENTRY(thr); - - if (thr->heap->curr_thread) { - duk_push_hobject(thr, (duk_hobject *) thr->heap->curr_thread); - } else { - duk_push_undefined(thr); - } -} - -DUK_EXTERNAL void duk_push_global_object(duk_hthread *thr) { - DUK_ASSERT_API_ENTRY(thr); - - duk_push_hobject_bidx(thr, DUK_BIDX_GLOBAL); -} - -/* XXX: size optimize */ -DUK_LOCAL void duk__push_stash(duk_hthread *thr) { - if (!duk_xget_owndataprop_stridx_short(thr, -1, DUK_STRIDX_INT_VALUE)) { - DUK_DDD(DUK_DDDPRINT("creating heap/global/thread stash on first use")); - duk_pop_unsafe(thr); - duk_push_bare_object(thr); - duk_dup_top(thr); - duk_xdef_prop_stridx_short(thr, - -3, - DUK_STRIDX_INT_VALUE, - DUK_PROPDESC_FLAGS_C); /* [ ... parent stash stash ] -> [ ... parent stash ] */ - } - duk_remove_m2(thr); -} - -DUK_EXTERNAL void duk_push_heap_stash(duk_hthread *thr) { - duk_heap *heap; - DUK_ASSERT_API_ENTRY(thr); - heap = thr->heap; - DUK_ASSERT(heap->heap_object != NULL); - duk_push_hobject(thr, heap->heap_object); - duk__push_stash(thr); -} - -DUK_EXTERNAL void duk_push_global_stash(duk_hthread *thr) { - DUK_ASSERT_API_ENTRY(thr); - duk_push_global_object(thr); - duk__push_stash(thr); -} - -DUK_EXTERNAL void duk_push_thread_stash(duk_hthread *thr, duk_hthread *target_thr) { - DUK_ASSERT_API_ENTRY(thr); - if (DUK_UNLIKELY(target_thr == NULL)) { - DUK_ERROR_TYPE_INVALID_ARGS(thr); - DUK_WO_NORETURN(return;); - } - duk_push_hobject(thr, (duk_hobject *) target_thr); - duk__push_stash(thr); -} - -/* XXX: duk_ssize_t would be useful here */ -DUK_LOCAL duk_int_t duk__try_push_vsprintf(duk_hthread *thr, void *buf, duk_size_t sz, const char *fmt, va_list ap) { - duk_int_t len; - - DUK_CTX_ASSERT_VALID(thr); - DUK_UNREF(thr); - - /* NUL terminator handling doesn't matter here */ - len = DUK_VSNPRINTF((char *) buf, sz, fmt, ap); - if (len < (duk_int_t) sz) { - /* Return value of 'sz' or more indicates output was (potentially) - * truncated. - */ - return (duk_int_t) len; - } - return -1; -} - -DUK_EXTERNAL const char *duk_push_vsprintf(duk_hthread *thr, const char *fmt, va_list ap) { - duk_uint8_t stack_buf[DUK_PUSH_SPRINTF_INITIAL_SIZE]; - duk_size_t sz = DUK_PUSH_SPRINTF_INITIAL_SIZE; - duk_bool_t pushed_buf = 0; - void *buf; - duk_int_t len; /* XXX: duk_ssize_t */ - const char *res; - - DUK_ASSERT_API_ENTRY(thr); - - /* special handling of fmt==NULL */ - if (!fmt) { - duk_hstring *h_str; - duk_push_hstring_empty(thr); - h_str = duk_known_hstring(thr, -1); - return (const char *) DUK_HSTRING_GET_DATA(h_str); - } - - /* initial estimate based on format string */ - sz = DUK_STRLEN(fmt) + 16; /* format plus something to avoid just missing */ - if (sz < DUK_PUSH_SPRINTF_INITIAL_SIZE) { - sz = DUK_PUSH_SPRINTF_INITIAL_SIZE; - } - DUK_ASSERT(sz > 0); - - /* Try to make do with a stack buffer to avoid allocating a temporary buffer. - * This works 99% of the time which is quite nice. - */ - for (;;) { - va_list ap_copy; /* copied so that 'ap' can be reused */ - - if (sz <= sizeof(stack_buf)) { - buf = stack_buf; - } else if (!pushed_buf) { - pushed_buf = 1; - buf = duk_push_dynamic_buffer(thr, sz); - } else { - buf = duk_resize_buffer(thr, -1, sz); - } - DUK_ASSERT(buf != NULL); - - DUK_VA_COPY(ap_copy, ap); - len = duk__try_push_vsprintf(thr, buf, sz, fmt, ap_copy); - va_end(ap_copy); - if (len >= 0) { - break; - } - - /* failed, resize and try again */ - sz = sz * 2; - if (DUK_UNLIKELY(sz >= DUK_PUSH_SPRINTF_SANITY_LIMIT)) { - DUK_ERROR_RANGE(thr, DUK_STR_RESULT_TOO_LONG); - DUK_WO_NORETURN(return NULL;); - } - } - - /* Cannot use duk_buffer_to_string() on the buffer because it is - * usually larger than 'len'; 'buf' is also usually a stack buffer. - */ - res = duk_push_lstring(thr, (const char *) buf, (duk_size_t) len); /* [ buf? res ] */ - if (pushed_buf) { - duk_remove_m2(thr); - } - return res; -} - -DUK_EXTERNAL const char *duk_push_sprintf(duk_hthread *thr, const char *fmt, ...) { - va_list ap; - const char *ret; - - DUK_ASSERT_API_ENTRY(thr); - - /* allow fmt==NULL */ - va_start(ap, fmt); - ret = duk_push_vsprintf(thr, fmt, ap); - va_end(ap); - - return ret; -} - -DUK_INTERNAL duk_hobject *duk_push_object_helper(duk_hthread *thr, - duk_uint_t hobject_flags_and_class, - duk_small_int_t prototype_bidx) { - duk_tval *tv_slot; - duk_hobject *h; - - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT(prototype_bidx == -1 || (prototype_bidx >= 0 && prototype_bidx < DUK_NUM_BUILTINS)); - - DUK__CHECK_SPACE(); - - h = duk_hobject_alloc(thr, hobject_flags_and_class); - DUK_ASSERT(h != NULL); - - DUK_DDD(DUK_DDDPRINT("created object with flags: 0x%08lx", (unsigned long) h->hdr.h_flags)); - - tv_slot = thr->valstack_top; - DUK_TVAL_SET_OBJECT(tv_slot, h); - DUK_HOBJECT_INCREF(thr, h); /* no side effects */ - thr->valstack_top++; - - /* object is now reachable */ - - if (prototype_bidx >= 0) { - DUK_HOBJECT_SET_PROTOTYPE_INIT_INCREF(thr, h, thr->builtins[prototype_bidx]); - } else { - DUK_ASSERT(prototype_bidx == -1); - DUK_ASSERT(DUK_HOBJECT_GET_PROTOTYPE(thr->heap, h) == NULL); - } - - return h; -} - -DUK_INTERNAL duk_hobject *duk_push_object_helper_proto(duk_hthread *thr, duk_uint_t hobject_flags_and_class, duk_hobject *proto) { - duk_hobject *h; - - DUK_ASSERT_API_ENTRY(thr); - - h = duk_push_object_helper(thr, hobject_flags_and_class, -1); - DUK_ASSERT(h != NULL); - DUK_HOBJECT_SET_PROTOTYPE_INIT_INCREF(thr, h, proto); - return h; -} - -DUK_EXTERNAL duk_idx_t duk_push_object(duk_hthread *thr) { - DUK_ASSERT_API_ENTRY(thr); - - (void) duk_push_object_helper(thr, - DUK_HOBJECT_FLAG_EXTENSIBLE | DUK_HOBJECT_FLAG_FASTREFS | - DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_OBJECT), - DUK_BIDX_OBJECT_PROTOTYPE); - return duk_get_top_index_unsafe(thr); -} - -DUK_EXTERNAL duk_idx_t duk_push_array(duk_hthread *thr) { - duk_uint_t flags; - duk_harray *obj; - duk_idx_t ret; - duk_tval *tv_slot; - - DUK_ASSERT_API_ENTRY(thr); - - flags = DUK_HOBJECT_FLAG_EXTENSIBLE | DUK_HOBJECT_FLAG_FASTREFS | DUK_HOBJECT_FLAG_ARRAY_PART | - DUK_HOBJECT_FLAG_EXOTIC_ARRAY | DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_ARRAY); - - obj = duk_harray_alloc(thr, flags); - DUK_ASSERT(obj != NULL); - - DUK_HOBJECT_SET_PROTOTYPE_INIT_INCREF(thr, (duk_hobject *) obj, thr->builtins[DUK_BIDX_ARRAY_PROTOTYPE]); - - tv_slot = thr->valstack_top; - DUK_TVAL_SET_OBJECT(tv_slot, (duk_hobject *) obj); - DUK_HOBJECT_INCREF(thr, obj); /* XXX: could preallocate with refcount = 1 */ - ret = (duk_idx_t) (thr->valstack_top - thr->valstack_bottom); - thr->valstack_top++; - - DUK_ASSERT(obj->length == 0); /* Array .length starts at zero. */ - return ret; -} - -DUK_EXTERNAL duk_idx_t duk_push_bare_array(duk_hthread *thr) { - duk_uint_t flags; - duk_harray *obj; - duk_idx_t ret; - duk_tval *tv_slot; - - DUK_ASSERT_API_ENTRY(thr); - - flags = DUK_HOBJECT_FLAG_EXTENSIBLE | DUK_HOBJECT_FLAG_FASTREFS | DUK_HOBJECT_FLAG_ARRAY_PART | - DUK_HOBJECT_FLAG_EXOTIC_ARRAY | DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_ARRAY); - - obj = duk_harray_alloc(thr, flags); - DUK_ASSERT(obj != NULL); - - tv_slot = thr->valstack_top; - DUK_TVAL_SET_OBJECT(tv_slot, (duk_hobject *) obj); - DUK_HOBJECT_INCREF(thr, obj); /* XXX: could preallocate with refcount = 1 */ - ret = (duk_idx_t) (thr->valstack_top - thr->valstack_bottom); - thr->valstack_top++; - - DUK_ASSERT(obj->length == 0); /* Array .length starts at zero. */ - return ret; -} - -DUK_INTERNAL duk_harray *duk_push_harray(duk_hthread *thr) { - /* XXX: API call could do this directly, cast to void in API macro. */ - duk_harray *a; - - DUK_ASSERT_API_ENTRY(thr); - - (void) duk_push_array(thr); - DUK_ASSERT(DUK_TVAL_IS_OBJECT(thr->valstack_top - 1)); - a = (duk_harray *) DUK_TVAL_GET_OBJECT(thr->valstack_top - 1); - DUK_ASSERT(a != NULL); - return a; -} - -/* Push a duk_harray with preallocated size (.length also set to match size). - * Caller may then populate array part of the duk_harray directly. - */ -DUK_INTERNAL duk_harray *duk_push_harray_with_size(duk_hthread *thr, duk_uint32_t size) { - duk_harray *a; - - DUK_ASSERT_API_ENTRY(thr); - - a = duk_push_harray(thr); - - duk_hobject_realloc_props(thr, (duk_hobject *) a, 0, size, 0, 0); - a->length = size; - return a; -} - -DUK_INTERNAL duk_tval *duk_push_harray_with_size_outptr(duk_hthread *thr, duk_uint32_t size) { - duk_harray *a; - - DUK_ASSERT_API_ENTRY(thr); - - a = duk_push_harray_with_size(thr, size); - DUK_ASSERT(a != NULL); - return DUK_HOBJECT_A_GET_BASE(thr->heap, (duk_hobject *) a); -} - -DUK_EXTERNAL duk_idx_t duk_push_thread_raw(duk_hthread *thr, duk_uint_t flags) { - duk_hthread *obj; - duk_idx_t ret; - duk_tval *tv_slot; - - DUK_ASSERT_API_ENTRY(thr); - - DUK__CHECK_SPACE(); - - obj = duk_hthread_alloc(thr, DUK_HOBJECT_FLAG_EXTENSIBLE | DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_THREAD)); - DUK_ASSERT(obj != NULL); - obj->state = DUK_HTHREAD_STATE_INACTIVE; -#if defined(DUK_USE_ROM_STRINGS) - /* Nothing to initialize, strs[] is in ROM. */ -#else -#if defined(DUK_USE_HEAPPTR16) - obj->strs16 = thr->strs16; -#else - obj->strs = thr->strs; -#endif -#endif - DUK_DDD(DUK_DDDPRINT("created thread object with flags: 0x%08lx", (unsigned long) obj->obj.hdr.h_flags)); - - /* make the new thread reachable */ - tv_slot = thr->valstack_top; - DUK_TVAL_SET_OBJECT(tv_slot, (duk_hobject *) obj); - DUK_HTHREAD_INCREF(thr, obj); - ret = (duk_idx_t) (thr->valstack_top - thr->valstack_bottom); - thr->valstack_top++; - - /* important to do this *after* pushing, to make the thread reachable for gc */ - if (DUK_UNLIKELY(!duk_hthread_init_stacks(thr->heap, obj))) { - DUK_ERROR_ALLOC_FAILED(thr); - DUK_WO_NORETURN(return 0;); - } - - /* initialize built-ins - either by copying or creating new ones */ - if (flags & DUK_THREAD_NEW_GLOBAL_ENV) { - duk_hthread_create_builtin_objects(obj); - } else { - duk_hthread_copy_builtin_objects(thr, obj); - } - - /* default prototype */ - DUK_HOBJECT_SET_PROTOTYPE_INIT_INCREF(thr, (duk_hobject *) obj, obj->builtins[DUK_BIDX_THREAD_PROTOTYPE]); - - /* Initial stack size satisfies the stack slack constraints so there - * is no need to require stack here. - */ - DUK_ASSERT(DUK_VALSTACK_INITIAL_SIZE >= DUK_VALSTACK_API_ENTRY_MINIMUM + DUK_VALSTACK_INTERNAL_EXTRA); - - return ret; -} - -DUK_INTERNAL duk_hcompfunc *duk_push_hcompfunc(duk_hthread *thr) { - duk_hcompfunc *obj; - duk_tval *tv_slot; - - DUK_ASSERT_API_ENTRY(thr); - - DUK__CHECK_SPACE(); - - /* Template functions are not strictly constructable (they don't - * have a "prototype" property for instance), so leave the - * DUK_HOBJECT_FLAG_CONSRUCTABLE flag cleared here. - */ - - obj = duk_hcompfunc_alloc(thr, - DUK_HOBJECT_FLAG_EXTENSIBLE | DUK_HOBJECT_FLAG_CALLABLE | DUK_HOBJECT_FLAG_COMPFUNC | - DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_FUNCTION)); - if (DUK_UNLIKELY(obj == NULL)) { - DUK_ERROR_ALLOC_FAILED(thr); - DUK_WO_NORETURN(return NULL;); - } - - DUK_DDD(DUK_DDDPRINT("created compiled function object with flags: 0x%08lx", (unsigned long) obj->obj.hdr.h_flags)); - - tv_slot = thr->valstack_top; - DUK_TVAL_SET_OBJECT(tv_slot, (duk_hobject *) obj); - DUK_HOBJECT_INCREF(thr, obj); - thr->valstack_top++; - - /* default prototype */ - DUK_ASSERT(DUK_HOBJECT_GET_PROTOTYPE(thr->heap, (duk_hobject *) obj) == NULL); - DUK_HOBJECT_SET_PROTOTYPE_INIT_INCREF(thr, (duk_hobject *) obj, thr->builtins[DUK_BIDX_FUNCTION_PROTOTYPE]); - - return obj; -} - -DUK_INTERNAL duk_hboundfunc *duk_push_hboundfunc(duk_hthread *thr) { - duk_hboundfunc *obj; - duk_tval *tv_slot; - - DUK_ASSERT_API_ENTRY(thr); - - DUK__CHECK_SPACE(); - obj = duk_hboundfunc_alloc(thr->heap, - DUK_HOBJECT_FLAG_EXTENSIBLE | DUK_HOBJECT_FLAG_BOUNDFUNC | DUK_HOBJECT_FLAG_CONSTRUCTABLE | - DUK_HOBJECT_FLAG_CALLABLE | DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_FUNCTION)); - if (!obj) { - DUK_ERROR_ALLOC_FAILED(thr); - DUK_WO_NORETURN(return NULL;); - } - - tv_slot = thr->valstack_top++; - DUK_TVAL_SET_OBJECT(tv_slot, (duk_hobject *) obj); - DUK_HOBJECT_INCREF(thr, obj); - - /* Prototype is left as NULL because the caller always sets it (and - * it depends on the target function). - */ - DUK_ASSERT(DUK_HOBJECT_GET_PROTOTYPE(thr->heap, (duk_hobject *) obj) == NULL); - - return obj; -} - -DUK_LOCAL duk_idx_t -duk__push_c_function_raw(duk_hthread *thr, duk_c_function func, duk_idx_t nargs, duk_uint_t flags, duk_small_uint_t proto_bidx) { - duk_hnatfunc *obj; - duk_idx_t ret; - duk_tval *tv_slot; - duk_int16_t func_nargs; - - DUK_CTX_ASSERT_VALID(thr); - - DUK__CHECK_SPACE(); - - if (DUK_UNLIKELY(func == NULL)) { - goto api_error; - } - if (nargs >= 0 && nargs < DUK_HNATFUNC_NARGS_MAX) { - func_nargs = (duk_int16_t) nargs; - } else if (nargs == DUK_VARARGS) { - func_nargs = DUK_HNATFUNC_NARGS_VARARGS; - } else { - goto api_error; - } - - obj = duk_hnatfunc_alloc(thr, flags); - DUK_ASSERT(obj != NULL); - - obj->func = func; - obj->nargs = func_nargs; - - DUK_DDD(DUK_DDDPRINT("created native function object with flags: 0x%08lx, nargs=%ld", - (unsigned long) obj->obj.hdr.h_flags, - (long) obj->nargs)); - - tv_slot = thr->valstack_top; - DUK_TVAL_SET_OBJECT(tv_slot, (duk_hobject *) obj); - DUK_HOBJECT_INCREF(thr, obj); - ret = (duk_idx_t) (thr->valstack_top - thr->valstack_bottom); - thr->valstack_top++; - - DUK_ASSERT_BIDX_VALID(proto_bidx); - DUK_HOBJECT_SET_PROTOTYPE_INIT_INCREF(thr, (duk_hobject *) obj, thr->builtins[proto_bidx]); - return ret; - -api_error: - DUK_ERROR_TYPE_INVALID_ARGS(thr); - DUK_WO_NORETURN(return 0;); -} - -DUK_EXTERNAL duk_idx_t duk_push_c_function(duk_hthread *thr, duk_c_function func, duk_int_t nargs) { - duk_uint_t flags; - - DUK_ASSERT_API_ENTRY(thr); - - flags = DUK_HOBJECT_FLAG_EXTENSIBLE | DUK_HOBJECT_FLAG_CONSTRUCTABLE | DUK_HOBJECT_FLAG_CALLABLE | - DUK_HOBJECT_FLAG_FASTREFS | DUK_HOBJECT_FLAG_NATFUNC | DUK_HOBJECT_FLAG_NEWENV | DUK_HOBJECT_FLAG_STRICT | - DUK_HOBJECT_FLAG_NOTAIL | DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_FUNCTION); - - /* Default prototype is a Duktape specific %NativeFunctionPrototype% - * which provides .length and .name getters. - */ - return duk__push_c_function_raw(thr, func, nargs, flags, DUK_BIDX_NATIVE_FUNCTION_PROTOTYPE); -} - -DUK_INTERNAL void duk_push_c_function_builtin(duk_hthread *thr, duk_c_function func, duk_int_t nargs) { - duk_uint_t flags; - - DUK_ASSERT_API_ENTRY(thr); - - flags = DUK_HOBJECT_FLAG_EXTENSIBLE | DUK_HOBJECT_FLAG_CONSTRUCTABLE | DUK_HOBJECT_FLAG_CALLABLE | - DUK_HOBJECT_FLAG_FASTREFS | DUK_HOBJECT_FLAG_NATFUNC | DUK_HOBJECT_FLAG_NEWENV | DUK_HOBJECT_FLAG_STRICT | - DUK_HOBJECT_FLAG_NOTAIL | DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_FUNCTION); - - /* Must use Function.prototype for standard built-in functions. */ - (void) duk__push_c_function_raw(thr, func, nargs, flags, DUK_BIDX_FUNCTION_PROTOTYPE); -} - -DUK_INTERNAL void duk_push_c_function_builtin_noconstruct(duk_hthread *thr, duk_c_function func, duk_int_t nargs) { - duk_uint_t flags; - - DUK_ASSERT_API_ENTRY(thr); - - flags = DUK_HOBJECT_FLAG_EXTENSIBLE | DUK_HOBJECT_FLAG_CALLABLE | DUK_HOBJECT_FLAG_FASTREFS | DUK_HOBJECT_FLAG_NATFUNC | - DUK_HOBJECT_FLAG_NEWENV | DUK_HOBJECT_FLAG_STRICT | DUK_HOBJECT_FLAG_NOTAIL | - DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_FUNCTION); - - /* Must use Function.prototype for standard built-in functions. */ - (void) duk__push_c_function_raw(thr, func, nargs, flags, DUK_BIDX_FUNCTION_PROTOTYPE); -} - -DUK_EXTERNAL duk_idx_t -duk_push_c_lightfunc(duk_hthread *thr, duk_c_function func, duk_idx_t nargs, duk_idx_t length, duk_int_t magic) { - duk_small_uint_t lf_flags; - duk_tval *tv_slot; - - DUK_ASSERT_API_ENTRY(thr); - - DUK__CHECK_SPACE(); - - if (nargs >= DUK_LFUNC_NARGS_MIN && nargs <= DUK_LFUNC_NARGS_MAX) { - /* as is */ - } else if (nargs == DUK_VARARGS) { - nargs = DUK_LFUNC_NARGS_VARARGS; - } else { - goto api_error; - } - if (DUK_UNLIKELY(!(length >= DUK_LFUNC_LENGTH_MIN && length <= DUK_LFUNC_LENGTH_MAX))) { - goto api_error; - } - if (DUK_UNLIKELY(!(magic >= DUK_LFUNC_MAGIC_MIN && magic <= DUK_LFUNC_MAGIC_MAX))) { - goto api_error; - } - - lf_flags = DUK_LFUNC_FLAGS_PACK((duk_small_int_t) magic, (duk_small_uint_t) length, (duk_small_uint_t) nargs); - tv_slot = thr->valstack_top++; - DUK_ASSERT(DUK_TVAL_IS_UNDEFINED(tv_slot)); - DUK_TVAL_SET_LIGHTFUNC(tv_slot, func, lf_flags); - DUK_ASSERT(tv_slot >= thr->valstack_bottom); - return (duk_idx_t) (tv_slot - thr->valstack_bottom); - -api_error: - DUK_ERROR_TYPE_INVALID_ARGS(thr); - DUK_WO_NORETURN(return 0;); -} - -#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) -DUK_INTERNAL duk_hbufobj *duk_push_bufobj_raw(duk_hthread *thr, - duk_uint_t hobject_flags_and_class, - duk_small_int_t prototype_bidx) { - duk_hbufobj *obj; - duk_tval *tv_slot; - - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT(prototype_bidx >= 0); - - DUK__CHECK_SPACE(); - - obj = duk_hbufobj_alloc(thr, hobject_flags_and_class); - DUK_ASSERT(obj != NULL); - - DUK_HOBJECT_SET_PROTOTYPE_INIT_INCREF(thr, (duk_hobject *) obj, thr->builtins[prototype_bidx]); - DUK_HBUFOBJ_ASSERT_VALID(obj); - - tv_slot = thr->valstack_top; - DUK_TVAL_SET_OBJECT(tv_slot, (duk_hobject *) obj); - DUK_HOBJECT_INCREF(thr, obj); - thr->valstack_top++; - - return obj; -} -#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ - -/* XXX: There's quite a bit of overlap with buffer creation handling in - * duk_bi_buffer.c. Look for overlap and refactor. - */ -#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) -#define DUK__PACK_ARGS(classnum, protobidx, elemtype, elemshift, istypedarray) \ - (((classnum) << 24) | ((protobidx) << 16) | ((elemtype) << 8) | ((elemshift) << 4) | (istypedarray)) - -static const duk_uint32_t duk__bufobj_flags_lookup[] = { - /* Node.js Buffers are Uint8Array instances which inherit from Buffer.prototype. */ - DUK__PACK_ARGS(DUK_HOBJECT_CLASS_ARRAYBUFFER, - DUK_BIDX_ARRAYBUFFER_PROTOTYPE, - DUK_HBUFOBJ_ELEM_UINT8, - 0, - 0), /* DUK_BUFOBJ_ARRAYBUFFER */ - DUK__PACK_ARGS(DUK_HOBJECT_CLASS_UINT8ARRAY, - DUK_BIDX_NODEJS_BUFFER_PROTOTYPE, - DUK_HBUFOBJ_ELEM_UINT8, - 0, - 1), /* DUK_BUFOBJ_NODEJS_BUFFER */ - DUK__PACK_ARGS(DUK_HOBJECT_CLASS_DATAVIEW, - DUK_BIDX_DATAVIEW_PROTOTYPE, - DUK_HBUFOBJ_ELEM_UINT8, - 0, - 0), /* DUK_BUFOBJ_DATAVIEW */ - DUK__PACK_ARGS(DUK_HOBJECT_CLASS_INT8ARRAY, - DUK_BIDX_INT8ARRAY_PROTOTYPE, - DUK_HBUFOBJ_ELEM_INT8, - 0, - 1), /* DUK_BUFOBJ_INT8ARRAY */ - DUK__PACK_ARGS(DUK_HOBJECT_CLASS_UINT8ARRAY, - DUK_BIDX_UINT8ARRAY_PROTOTYPE, - DUK_HBUFOBJ_ELEM_UINT8, - 0, - 1), /* DUK_BUFOBJ_UINT8ARRAY */ - DUK__PACK_ARGS(DUK_HOBJECT_CLASS_UINT8CLAMPEDARRAY, - DUK_BIDX_UINT8CLAMPEDARRAY_PROTOTYPE, - DUK_HBUFOBJ_ELEM_UINT8CLAMPED, - 0, - 1), /* DUK_BUFOBJ_UINT8CLAMPEDARRAY */ - DUK__PACK_ARGS(DUK_HOBJECT_CLASS_INT16ARRAY, - DUK_BIDX_INT16ARRAY_PROTOTYPE, - DUK_HBUFOBJ_ELEM_INT16, - 1, - 1), /* DUK_BUFOBJ_INT16ARRAY */ - DUK__PACK_ARGS(DUK_HOBJECT_CLASS_UINT16ARRAY, - DUK_BIDX_UINT16ARRAY_PROTOTYPE, - DUK_HBUFOBJ_ELEM_UINT16, - 1, - 1), /* DUK_BUFOBJ_UINT16ARRAY */ - DUK__PACK_ARGS(DUK_HOBJECT_CLASS_INT32ARRAY, - DUK_BIDX_INT32ARRAY_PROTOTYPE, - DUK_HBUFOBJ_ELEM_INT32, - 2, - 1), /* DUK_BUFOBJ_INT32ARRAY */ - DUK__PACK_ARGS(DUK_HOBJECT_CLASS_UINT32ARRAY, - DUK_BIDX_UINT32ARRAY_PROTOTYPE, - DUK_HBUFOBJ_ELEM_UINT32, - 2, - 1), /* DUK_BUFOBJ_UINT32ARRAY */ - DUK__PACK_ARGS(DUK_HOBJECT_CLASS_FLOAT32ARRAY, - DUK_BIDX_FLOAT32ARRAY_PROTOTYPE, - DUK_HBUFOBJ_ELEM_FLOAT32, - 2, - 1), /* DUK_BUFOBJ_FLOAT32ARRAY */ - DUK__PACK_ARGS(DUK_HOBJECT_CLASS_FLOAT64ARRAY, - DUK_BIDX_FLOAT64ARRAY_PROTOTYPE, - DUK_HBUFOBJ_ELEM_FLOAT64, - 3, - 1) /* DUK_BUFOBJ_FLOAT64ARRAY */ -}; -#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ - -#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) -DUK_EXTERNAL void duk_push_buffer_object(duk_hthread *thr, - duk_idx_t idx_buffer, - duk_size_t byte_offset, - duk_size_t byte_length, - duk_uint_t flags) { - duk_hbufobj *h_bufobj; - duk_hbuffer *h_val; - duk_hobject *h_arraybuf; - duk_uint32_t tmp; - duk_uint_t classnum; - duk_uint_t protobidx; - duk_uint_t lookupidx; - duk_uint_t uint_offset, uint_length, uint_added; - - DUK_ASSERT_API_ENTRY(thr); - - /* The underlying types for offset/length in duk_hbufobj is - * duk_uint_t; make sure argument values fit. - */ - uint_offset = (duk_uint_t) byte_offset; - uint_length = (duk_uint_t) byte_length; - if (sizeof(duk_size_t) != sizeof(duk_uint_t)) { - if (DUK_UNLIKELY((duk_size_t) uint_offset != byte_offset || (duk_size_t) uint_length != byte_length)) { - goto range_error; - } - } - - DUK_ASSERT_DISABLE(flags >= 0); /* flags is unsigned */ - lookupidx = flags; - if (DUK_UNLIKELY(lookupidx >= sizeof(duk__bufobj_flags_lookup) / sizeof(duk_uint32_t))) { - goto arg_error; - } - tmp = duk__bufobj_flags_lookup[lookupidx]; - classnum = tmp >> 24; - protobidx = (tmp >> 16) & 0xff; - - h_arraybuf = duk_get_hobject(thr, idx_buffer); - if (h_arraybuf != NULL && /* argument is an object */ - flags != DUK_BUFOBJ_ARRAYBUFFER && /* creating a view */ - DUK_HOBJECT_GET_CLASS_NUMBER(h_arraybuf) == DUK_HOBJECT_CLASS_ARRAYBUFFER /* argument is ArrayBuffer */) { - duk_uint_t tmp_offset; - - DUK_HBUFOBJ_ASSERT_VALID((duk_hbufobj *) h_arraybuf); - h_val = ((duk_hbufobj *) h_arraybuf)->buf; - if (DUK_UNLIKELY(h_val == NULL)) { - goto arg_error; - } - - tmp_offset = uint_offset + ((duk_hbufobj *) h_arraybuf)->offset; - if (DUK_UNLIKELY(tmp_offset < uint_offset)) { - goto range_error; - } - uint_offset = tmp_offset; - - /* Note intentional difference to new TypedArray(): we allow - * caller to create an uncovered typed array (which is memory - * safe); new TypedArray() rejects it. - */ - } else { - /* Handle unexpected object arguments here too, for nice error - * messages. - */ - h_arraybuf = NULL; - h_val = duk_require_hbuffer(thr, idx_buffer); - } - - /* Wrap check for offset+length. */ - uint_added = uint_offset + uint_length; - if (DUK_UNLIKELY(uint_added < uint_offset)) { - goto range_error; - } - DUK_ASSERT(uint_added >= uint_offset && uint_added >= uint_length); - - DUK_ASSERT(h_val != NULL); - - h_bufobj = duk_push_bufobj_raw(thr, - DUK_HOBJECT_FLAG_EXTENSIBLE | DUK_HOBJECT_FLAG_BUFOBJ | DUK_HOBJECT_CLASS_AS_FLAGS(classnum), - (duk_small_int_t) protobidx); - DUK_ASSERT(h_bufobj != NULL); - - h_bufobj->buf = h_val; - DUK_HBUFFER_INCREF(thr, h_val); - h_bufobj->buf_prop = h_arraybuf; - DUK_HOBJECT_INCREF_ALLOWNULL(thr, h_arraybuf); - h_bufobj->offset = uint_offset; - h_bufobj->length = uint_length; - h_bufobj->shift = (tmp >> 4) & 0x0f; - h_bufobj->elem_type = (tmp >> 8) & 0xff; - h_bufobj->is_typedarray = tmp & 0x0f; - DUK_HBUFOBJ_ASSERT_VALID(h_bufobj); - - /* TypedArray views need an automatic ArrayBuffer which must be - * provided as .buffer property of the view. The ArrayBuffer is - * referenced via duk_hbufobj->buf_prop and an inherited .buffer - * accessor returns it. The ArrayBuffer is created lazily on first - * access if necessary so we don't need to do anything more here. - */ - return; - -range_error: - DUK_ERROR_RANGE(thr, DUK_STR_INVALID_ARGS); - DUK_WO_NORETURN(return;); - -arg_error: - DUK_ERROR_TYPE(thr, DUK_STR_INVALID_ARGS); - DUK_WO_NORETURN(return;); -} -#else /* DUK_USE_BUFFEROBJECT_SUPPORT */ -DUK_EXTERNAL void duk_push_buffer_object(duk_hthread *thr, - duk_idx_t idx_buffer, - duk_size_t byte_offset, - duk_size_t byte_length, - duk_uint_t flags) { - DUK_ASSERT_API_ENTRY(thr); - DUK_UNREF(idx_buffer); - DUK_UNREF(byte_offset); - DUK_UNREF(byte_length); - DUK_UNREF(flags); - DUK_ERROR_UNSUPPORTED(thr); - DUK_WO_NORETURN(return;); -} -#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ - -DUK_EXTERNAL duk_idx_t duk_push_error_object_va_raw(duk_hthread *thr, - duk_errcode_t err_code, - const char *filename, - duk_int_t line, - const char *fmt, - va_list ap) { - duk_hobject *proto; -#if defined(DUK_USE_AUGMENT_ERROR_CREATE) - duk_small_uint_t augment_flags; -#endif - - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT(thr != NULL); - DUK_UNREF(filename); - DUK_UNREF(line); - - /* Error code also packs a tracedata related flag. */ -#if defined(DUK_USE_AUGMENT_ERROR_CREATE) - augment_flags = 0; - if (err_code & DUK_ERRCODE_FLAG_NOBLAME_FILELINE) { - augment_flags = DUK_AUGMENT_FLAG_NOBLAME_FILELINE; - } -#endif - err_code = err_code & (~DUK_ERRCODE_FLAG_NOBLAME_FILELINE); - - /* error gets its 'name' from the prototype */ - proto = duk_error_prototype_from_code(thr, err_code); - (void) duk_push_object_helper_proto(thr, - DUK_HOBJECT_FLAG_EXTENSIBLE | DUK_HOBJECT_FLAG_FASTREFS | - DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_ERROR), - proto); - - /* ... and its 'message' from an instance property */ - if (fmt) { - duk_push_vsprintf(thr, fmt, ap); - duk_xdef_prop_stridx_short(thr, -2, DUK_STRIDX_MESSAGE, DUK_PROPDESC_FLAGS_WC); - } else { - /* If no explicit message given, put error code into message field - * (as a number). This is not fully in keeping with the ECMAScript - * error model because messages are supposed to be strings (Error - * constructors use ToString() on their argument). However, it's - * probably more useful than having a separate 'code' property. - */ - duk_push_int(thr, err_code); - duk_xdef_prop_stridx_short(thr, -2, DUK_STRIDX_MESSAGE, DUK_PROPDESC_FLAGS_WC); - } - - /* XXX: .code = err_code disabled, not sure if useful */ - - /* Creation time error augmentation */ -#if defined(DUK_USE_AUGMENT_ERROR_CREATE) - /* filename may be NULL in which case file/line is not recorded */ - duk_err_augment_error_create(thr, thr, filename, line, augment_flags); /* may throw an error */ -#endif - - return duk_get_top_index_unsafe(thr); -} - -DUK_EXTERNAL duk_idx_t -duk_push_error_object_raw(duk_hthread *thr, duk_errcode_t err_code, const char *filename, duk_int_t line, const char *fmt, ...) { - va_list ap; - duk_idx_t ret; - - DUK_ASSERT_API_ENTRY(thr); - - va_start(ap, fmt); - ret = duk_push_error_object_va_raw(thr, err_code, filename, line, fmt, ap); - va_end(ap); - return ret; -} - -#if !defined(DUK_USE_VARIADIC_MACROS) -DUK_EXTERNAL duk_idx_t duk_push_error_object_stash(duk_hthread *thr, duk_errcode_t err_code, const char *fmt, ...) { - const char *filename = duk_api_global_filename; - duk_int_t line = duk_api_global_line; - va_list ap; - duk_idx_t ret; - - DUK_ASSERT_API_ENTRY(thr); - - duk_api_global_filename = NULL; - duk_api_global_line = 0; - va_start(ap, fmt); - ret = duk_push_error_object_va_raw(thr, err_code, filename, line, fmt, ap); - va_end(ap); - return ret; -} -#endif /* DUK_USE_VARIADIC_MACROS */ - -DUK_EXTERNAL void *duk_push_buffer_raw(duk_hthread *thr, duk_size_t size, duk_small_uint_t flags) { - duk_tval *tv_slot; - duk_hbuffer *h; - void *buf_data; - - DUK_ASSERT_API_ENTRY(thr); - - DUK__CHECK_SPACE(); - - /* Check for maximum buffer length. */ - if (DUK_UNLIKELY(size > DUK_HBUFFER_MAX_BYTELEN)) { - DUK_ERROR_RANGE(thr, DUK_STR_BUFFER_TOO_LONG); - DUK_WO_NORETURN(return NULL;); - } - - h = duk_hbuffer_alloc(thr->heap, size, flags, &buf_data); - if (DUK_UNLIKELY(h == NULL)) { - DUK_ERROR_ALLOC_FAILED(thr); - DUK_WO_NORETURN(return NULL;); - } - - tv_slot = thr->valstack_top; - DUK_TVAL_SET_BUFFER(tv_slot, h); - DUK_HBUFFER_INCREF(thr, h); - thr->valstack_top++; - - return (void *) buf_data; -} - -DUK_INTERNAL void *duk_push_fixed_buffer_nozero(duk_hthread *thr, duk_size_t len) { - DUK_ASSERT_API_ENTRY(thr); - return duk_push_buffer_raw(thr, len, DUK_BUF_FLAG_NOZERO); -} - -DUK_INTERNAL void *duk_push_fixed_buffer_zero(duk_hthread *thr, duk_size_t len) { - void *ptr; - - DUK_ASSERT_API_ENTRY(thr); - - ptr = duk_push_buffer_raw(thr, len, 0); - DUK_ASSERT(ptr != NULL); -#if !defined(DUK_USE_ZERO_BUFFER_DATA) - /* ES2015 requires zeroing even when DUK_USE_ZERO_BUFFER_DATA - * is not set. - */ - duk_memzero((void *) ptr, (size_t) len); -#endif - return ptr; -} - -#if defined(DUK_USE_ES6_PROXY) -DUK_EXTERNAL duk_idx_t duk_push_proxy(duk_hthread *thr, duk_uint_t proxy_flags) { - duk_hobject *h_target; - duk_hobject *h_handler; - duk_hproxy *h_proxy; - duk_tval *tv_slot; - duk_uint_t flags; - - DUK_ASSERT_API_ENTRY(thr); - DUK_UNREF(proxy_flags); - - /* DUK__CHECK_SPACE() unnecessary because the Proxy is written to - * value stack in-place. - */ -#if 0 - DUK__CHECK_SPACE(); -#endif - - /* Reject a proxy object as the target because it would need - * special handling in property lookups. (ES2015 has no such - * restriction.) - */ - h_target = duk_require_hobject_promote_mask(thr, -2, DUK_TYPE_MASK_LIGHTFUNC | DUK_TYPE_MASK_BUFFER); - DUK_ASSERT(h_target != NULL); - if (DUK_HOBJECT_IS_PROXY(h_target)) { - goto fail_args; - } - - /* Reject a proxy object as the handler because it would cause - * potentially unbounded recursion. (ES2015 has no such - * restriction.) - * - * There's little practical reason to use a lightfunc or a plain - * buffer as the handler table: one could only provide traps via - * their prototype objects (Function.prototype and ArrayBuffer.prototype). - * Even so, as lightfuncs and plain buffers mimic their object - * counterparts, they're promoted and accepted here. - */ - h_handler = duk_require_hobject_promote_mask(thr, -1, DUK_TYPE_MASK_LIGHTFUNC | DUK_TYPE_MASK_BUFFER); - DUK_ASSERT(h_handler != NULL); - if (DUK_HOBJECT_IS_PROXY(h_handler)) { - goto fail_args; - } - - /* XXX: Proxy object currently has no prototype, so ToPrimitive() - * coercion fails which is a bit confusing. - */ - - /* CALLABLE and CONSTRUCTABLE flags are copied from the (initial) - * target, see ES2015 Sections 9.5.15 and 9.5.13. - */ - flags = DUK_HEAPHDR_GET_FLAGS((duk_heaphdr *) h_target) & (DUK_HOBJECT_FLAG_CALLABLE | DUK_HOBJECT_FLAG_CONSTRUCTABLE); - flags |= DUK_HOBJECT_FLAG_EXTENSIBLE | DUK_HOBJECT_FLAG_EXOTIC_PROXYOBJ; - if (flags & DUK_HOBJECT_FLAG_CALLABLE) { - flags |= DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_FUNCTION) | DUK_HOBJECT_FLAG_SPECIAL_CALL; - } else { - flags |= DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_OBJECT); - } - - h_proxy = duk_hproxy_alloc(thr, flags); - DUK_ASSERT(h_proxy != NULL); - DUK_ASSERT(DUK_HOBJECT_GET_PROTOTYPE(thr->heap, (duk_hobject *) h_proxy) == NULL); - - /* Initialize Proxy target and handler references; avoid INCREF - * by stealing the value stack refcounts via direct value stack - * manipulation. INCREF is needed for the Proxy itself however. - */ - DUK_ASSERT(h_target != NULL); - h_proxy->target = h_target; - DUK_ASSERT(h_handler != NULL); - h_proxy->handler = h_handler; - DUK_HPROXY_ASSERT_VALID(h_proxy); - - DUK_ASSERT(duk_get_hobject(thr, -2) == h_target); - DUK_ASSERT(duk_get_hobject(thr, -1) == h_handler); - tv_slot = thr->valstack_top - 2; - DUK_ASSERT(tv_slot >= thr->valstack_bottom); - DUK_TVAL_SET_OBJECT(tv_slot, (duk_hobject *) h_proxy); - DUK_HOBJECT_INCREF(thr, (duk_hobject *) h_proxy); - tv_slot++; - DUK_TVAL_SET_UNDEFINED(tv_slot); /* [ ... target handler ] -> [ ... proxy undefined ] */ - thr->valstack_top = tv_slot; /* -> [ ... proxy ] */ - - DUK_DD(DUK_DDPRINT("created Proxy: %!iT", duk_get_tval(thr, -1))); - - return (duk_idx_t) (thr->valstack_top - thr->valstack_bottom - 1); - -fail_args: - DUK_ERROR_TYPE_INVALID_ARGS(thr); - DUK_WO_NORETURN(return 0;); -} -#else /* DUK_USE_ES6_PROXY */ -DUK_EXTERNAL duk_idx_t duk_push_proxy(duk_hthread *thr, duk_uint_t proxy_flags) { - DUK_ASSERT_API_ENTRY(thr); - DUK_UNREF(proxy_flags); - DUK_ERROR_UNSUPPORTED(thr); - DUK_WO_NORETURN(return 0;); -} -#endif /* DUK_USE_ES6_PROXY */ - -#if defined(DUK_USE_ASSERTIONS) -DUK_LOCAL void duk__validate_push_heapptr(duk_hthread *thr, void *ptr) { - duk_heaphdr *h; - duk_heaphdr *curr; - duk_bool_t found = 0; - - h = (duk_heaphdr *) ptr; - if (h == NULL) { - /* Allowed. */ - return; - } - DUK_ASSERT(h != NULL); - DUK_ASSERT(DUK_HEAPHDR_HTYPE_VALID(h)); - - /* One particular problem case is where an object has been - * queued for finalization but the finalizer hasn't yet been - * executed. - * - * Corner case: we're running in a finalizer for object X, and - * user code calls duk_push_heapptr() for X itself. In this - * case X will be in finalize_list, and we can detect the case - * by seeing that X's FINALIZED flag is set (which is done before - * the finalizer starts executing). - */ -#if defined(DUK_USE_FINALIZER_SUPPORT) - for (curr = thr->heap->finalize_list; curr != NULL; curr = DUK_HEAPHDR_GET_NEXT(thr->heap, curr)) { - /* FINALIZABLE is set for all objects on finalize_list - * except for an object being finalized right now. So - * can't assert here. - */ -#if 0 - DUK_ASSERT(DUK_HEAPHDR_HAS_FINALIZABLE(curr)); -#endif - - if (curr == h) { - if (DUK_HEAPHDR_HAS_FINALIZED((duk_heaphdr *) h)) { - /* Object is currently being finalized. */ - DUK_ASSERT(found == 0); /* Would indicate corrupted lists. */ - found = 1; - } else { - /* Not being finalized but on finalize_list, - * allowed since Duktape 2.1. - */ - DUK_ASSERT(found == 0); /* Would indicate corrupted lists. */ - found = 1; - } - } - } -#endif /* DUK_USE_FINALIZER_SUPPORT */ - -#if defined(DUK_USE_REFERENCE_COUNTING) - /* Because refzero_list is now processed to completion inline with - * no side effects, it's always empty here. - */ - DUK_ASSERT(thr->heap->refzero_list == NULL); -#endif - - /* If not present in finalize_list (or refzero_list), it - * must be either in heap_allocated or the string table. - */ - if (DUK_HEAPHDR_IS_STRING(h)) { - duk_uint32_t i; - duk_hstring *str; - duk_heap *heap = thr->heap; - - DUK_ASSERT(found == 0); - for (i = 0; i < heap->st_size; i++) { -#if defined(DUK_USE_STRTAB_PTRCOMP) - str = DUK_USE_HEAPPTR_DEC16((heap)->heap_udata, heap->strtable16[i]); -#else - str = heap->strtable[i]; -#endif - while (str != NULL) { - if (str == (duk_hstring *) h) { - DUK_ASSERT(found == 0); /* Would indicate corrupted lists. */ - found = 1; - break; - } - str = str->hdr.h_next; - } - } - DUK_ASSERT(found != 0); - } else { - for (curr = thr->heap->heap_allocated; curr != NULL; curr = DUK_HEAPHDR_GET_NEXT(thr->heap, curr)) { - if (curr == h) { - DUK_ASSERT(found == 0); /* Would indicate corrupted lists. */ - found = 1; - } - } - DUK_ASSERT(found != 0); - } -} -#endif /* DUK_USE_ASSERTIONS */ - -DUK_EXTERNAL duk_idx_t duk_push_heapptr(duk_hthread *thr, void *ptr) { - duk_idx_t ret; - duk_tval *tv; - - DUK_ASSERT_API_ENTRY(thr); - - /* Reviving an object using a heap pointer is a dangerous API - * operation: if the application doesn't guarantee that the - * pointer target is always reachable, difficult-to-diagnose - * problems may ensue. Try to validate the 'ptr' argument to - * the extent possible. - */ - -#if defined(DUK_USE_ASSERTIONS) - duk__validate_push_heapptr(thr, ptr); -#endif - - DUK__CHECK_SPACE(); - - ret = (duk_idx_t) (thr->valstack_top - thr->valstack_bottom); - tv = thr->valstack_top++; - - if (ptr == NULL) { - DUK_ASSERT(DUK_TVAL_IS_UNDEFINED(tv)); - return ret; - } - - DUK_HEAPHDR_ASSERT_VALID((duk_heaphdr *) ptr); - - /* If the argument is on finalize_list it has technically been - * unreachable before duk_push_heapptr() but it's still safe to - * push it. Starting from Duktape 2.1 allow application code to - * do so. There are two main cases: - * - * (1) The object is on the finalize_list and we're called by - * the finalizer for the object being finalized. In this - * case do nothing: finalize_list handling will deal with - * the object queueing. This is detected by the object not - * having a FINALIZABLE flag despite being on the finalize_list; - * the flag is cleared for the object being finalized only. - * - * (2) The object is on the finalize_list but is not currently - * being processed. In this case the object can be queued - * back to heap_allocated with a few flags cleared, in effect - * cancelling the finalizer. - */ - if (DUK_UNLIKELY(DUK_HEAPHDR_HAS_FINALIZABLE((duk_heaphdr *) ptr))) { - duk_heaphdr *curr; - - DUK_D(DUK_DPRINT("duk_push_heapptr() with a pointer on finalize_list, autorescue")); - - curr = (duk_heaphdr *) ptr; - DUK_HEAPHDR_CLEAR_FINALIZABLE(curr); - - /* Because FINALIZED is set prior to finalizer call, it will - * be set for the object being currently finalized, but not - * for other objects on finalize_list. - */ - DUK_HEAPHDR_CLEAR_FINALIZED(curr); - - /* Dequeue object from finalize_list and queue it back to - * heap_allocated. - */ -#if defined(DUK_USE_REFERENCE_COUNTING) - DUK_ASSERT(DUK_HEAPHDR_GET_REFCOUNT(curr) >= 1); /* Preincremented on finalize_list insert. */ - DUK_HEAPHDR_PREDEC_REFCOUNT(curr); -#endif - DUK_HEAP_REMOVE_FROM_FINALIZE_LIST(thr->heap, curr); - DUK_HEAP_INSERT_INTO_HEAP_ALLOCATED(thr->heap, curr); - - /* Continue with the rest. */ - } - - switch (DUK_HEAPHDR_GET_TYPE((duk_heaphdr *) ptr)) { - case DUK_HTYPE_STRING: - DUK_TVAL_SET_STRING(tv, (duk_hstring *) ptr); - break; - case DUK_HTYPE_OBJECT: - DUK_TVAL_SET_OBJECT(tv, (duk_hobject *) ptr); - break; - default: - DUK_ASSERT(DUK_HEAPHDR_GET_TYPE((duk_heaphdr *) ptr) == DUK_HTYPE_BUFFER); - DUK_TVAL_SET_BUFFER(tv, (duk_hbuffer *) ptr); - break; - } - - DUK_HEAPHDR_INCREF(thr, (duk_heaphdr *) ptr); - - return ret; -} - -/* Push object with no prototype, i.e. a "bare" object. */ -DUK_EXTERNAL duk_idx_t duk_push_bare_object(duk_hthread *thr) { - DUK_ASSERT_API_ENTRY(thr); - - (void) duk_push_object_helper(thr, - DUK_HOBJECT_FLAG_EXTENSIBLE | DUK_HOBJECT_FLAG_FASTREFS | - DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_OBJECT), - -1); /* no prototype */ - return duk_get_top_index_unsafe(thr); -} - -DUK_INTERNAL void duk_push_hstring(duk_hthread *thr, duk_hstring *h) { - duk_tval tv; - - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT(h != NULL); - - DUK_TVAL_SET_STRING(&tv, h); - duk_push_tval(thr, &tv); -} - -DUK_INTERNAL void duk_push_hstring_stridx(duk_hthread *thr, duk_small_uint_t stridx) { - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT_STRIDX_VALID(stridx); - duk_push_hstring(thr, DUK_HTHREAD_GET_STRING(thr, stridx)); -} - -DUK_INTERNAL void duk_push_hstring_empty(duk_hthread *thr) { - DUK_ASSERT_API_ENTRY(thr); - duk_push_hstring(thr, DUK_HTHREAD_GET_STRING(thr, DUK_STRIDX_EMPTY_STRING)); -} - -DUK_INTERNAL void duk_push_hobject(duk_hthread *thr, duk_hobject *h) { - duk_tval tv; - - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT(h != NULL); - - DUK_TVAL_SET_OBJECT(&tv, h); - duk_push_tval(thr, &tv); -} - -DUK_INTERNAL void duk_push_hbuffer(duk_hthread *thr, duk_hbuffer *h) { - duk_tval tv; - - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT(h != NULL); - - DUK_TVAL_SET_BUFFER(&tv, h); - duk_push_tval(thr, &tv); -} - -DUK_INTERNAL void duk_push_hobject_bidx(duk_hthread *thr, duk_small_int_t builtin_idx) { - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT(builtin_idx >= 0 && builtin_idx < DUK_NUM_BUILTINS); - DUK_ASSERT(thr->builtins[builtin_idx] != NULL); - - duk_push_hobject(thr, thr->builtins[builtin_idx]); -} - -/* - * Poppers - */ - -DUK_LOCAL DUK_ALWAYS_INLINE void duk__pop_n_unsafe_raw(duk_hthread *thr, duk_idx_t count) { - duk_tval *tv; -#if defined(DUK_USE_REFERENCE_COUNTING) - duk_tval *tv_end; -#endif - - DUK_CTX_ASSERT_VALID(thr); - DUK_ASSERT(count >= 0); - DUK_ASSERT((duk_size_t) (thr->valstack_top - thr->valstack_bottom) >= (duk_size_t) count); - -#if defined(DUK_USE_REFERENCE_COUNTING) - tv = thr->valstack_top; - tv_end = tv - count; - while (tv != tv_end) { - tv--; - DUK_ASSERT(tv >= thr->valstack_bottom); - DUK_TVAL_SET_UNDEFINED_UPDREF_NORZ(thr, tv); - } - thr->valstack_top = tv; - DUK_REFZERO_CHECK_FAST(thr); -#else - tv = thr->valstack_top; - while (count > 0) { - count--; - tv--; - DUK_ASSERT(tv >= thr->valstack_bottom); - DUK_TVAL_SET_UNDEFINED(tv); - } - thr->valstack_top = tv; -#endif - - DUK_ASSERT(thr->valstack_top >= thr->valstack_bottom); -} - -DUK_EXTERNAL void duk_pop_n(duk_hthread *thr, duk_idx_t count) { - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT(thr->valstack_top >= thr->valstack_bottom); - - if (DUK_UNLIKELY((duk_uidx_t) (thr->valstack_top - thr->valstack_bottom) < (duk_uidx_t) count)) { - DUK_ERROR_RANGE_INVALID_COUNT(thr); - DUK_WO_NORETURN(return;); - } - DUK_ASSERT(count >= 0); - - duk__pop_n_unsafe_raw(thr, count); -} - -#if defined(DUK_USE_PREFER_SIZE) -DUK_INTERNAL void duk_pop_n_unsafe(duk_hthread *thr, duk_idx_t count) { - DUK_ASSERT_API_ENTRY(thr); - duk_pop_n(thr, count); -} -#else /* DUK_USE_PREFER_SIZE */ -DUK_INTERNAL void duk_pop_n_unsafe(duk_hthread *thr, duk_idx_t count) { - DUK_ASSERT_API_ENTRY(thr); - duk__pop_n_unsafe_raw(thr, count); -} -#endif /* DUK_USE_PREFER_SIZE */ - -/* Pop N elements without DECREF (in effect "stealing" any actual refcounts). */ -#if defined(DUK_USE_REFERENCE_COUNTING) -DUK_INTERNAL void duk_pop_n_nodecref_unsafe(duk_hthread *thr, duk_idx_t count) { - duk_tval *tv; - - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT(count >= 0); - DUK_ASSERT(thr->valstack_top >= thr->valstack_bottom); - DUK_ASSERT((duk_size_t) (thr->valstack_top - thr->valstack_bottom) >= (duk_size_t) count); - - tv = thr->valstack_top; - while (count > 0) { - count--; - tv--; - DUK_ASSERT(tv >= thr->valstack_bottom); - DUK_TVAL_SET_UNDEFINED(tv); - } - thr->valstack_top = tv; - - DUK_ASSERT(thr->valstack_top >= thr->valstack_bottom); -} -#else /* DUK_USE_REFERENCE_COUNTING */ -DUK_INTERNAL void duk_pop_n_nodecref_unsafe(duk_hthread *thr, duk_idx_t count) { - DUK_ASSERT_API_ENTRY(thr); - duk_pop_n_unsafe(thr, count); -} -#endif /* DUK_USE_REFERENCE_COUNTING */ - -/* Popping one element is called so often that when footprint is not an issue, - * compile a specialized function for it. - */ -#if defined(DUK_USE_PREFER_SIZE) -DUK_EXTERNAL void duk_pop(duk_hthread *thr) { - DUK_ASSERT_API_ENTRY(thr); - duk_pop_n(thr, 1); -} -DUK_INTERNAL void duk_pop_unsafe(duk_hthread *thr) { - DUK_ASSERT_API_ENTRY(thr); - duk_pop_n_unsafe(thr, 1); -} -DUK_INTERNAL void duk_pop_nodecref_unsafe(duk_hthread *thr) { - DUK_ASSERT_API_ENTRY(thr); - duk_pop_n_nodecref_unsafe(thr, 1); -} -#else /* DUK_USE_PREFER_SIZE */ -DUK_LOCAL DUK_ALWAYS_INLINE void duk__pop_unsafe_raw(duk_hthread *thr) { - duk_tval *tv; - - DUK_CTX_ASSERT_VALID(thr); - DUK_ASSERT(thr->valstack_top != thr->valstack_bottom); - DUK_ASSERT(thr->valstack_top >= thr->valstack_bottom); - DUK_ASSERT((duk_size_t) (thr->valstack_top - thr->valstack_bottom) >= (duk_size_t) 1); - - tv = --thr->valstack_top; - DUK_ASSERT(tv >= thr->valstack_bottom); -#if defined(DUK_USE_REFERENCE_COUNTING) - DUK_TVAL_SET_UNDEFINED_UPDREF(thr, tv); /* side effects */ -#else - DUK_TVAL_SET_UNDEFINED(tv); -#endif - - DUK_ASSERT(thr->valstack_top >= thr->valstack_bottom); -} -DUK_EXTERNAL void duk_pop(duk_hthread *thr) { - DUK_ASSERT_API_ENTRY(thr); - - DUK_ASSERT(thr->valstack_top >= thr->valstack_bottom); - if (DUK_UNLIKELY(thr->valstack_top == thr->valstack_bottom)) { - DUK_ERROR_RANGE_INVALID_COUNT(thr); - DUK_WO_NORETURN(return;); - } - - duk__pop_unsafe_raw(thr); -} -DUK_INTERNAL void duk_pop_unsafe(duk_hthread *thr) { - DUK_ASSERT_API_ENTRY(thr); - duk__pop_unsafe_raw(thr); -} -DUK_INTERNAL void duk_pop_nodecref_unsafe(duk_hthread *thr) { - duk_tval *tv; - - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT(thr->valstack_top != thr->valstack_bottom); - DUK_ASSERT(thr->valstack_top >= thr->valstack_bottom); - DUK_ASSERT((duk_size_t) (thr->valstack_top - thr->valstack_bottom) >= (duk_size_t) 1); - - tv = --thr->valstack_top; - DUK_ASSERT(tv >= thr->valstack_bottom); - DUK_TVAL_SET_UNDEFINED(tv); - - DUK_ASSERT(thr->valstack_top >= thr->valstack_bottom); -} -#endif /* !DUK_USE_PREFER_SIZE */ - -#if defined(DUK_USE_PREFER_SIZE) -DUK_INTERNAL void duk_pop_undefined(duk_hthread *thr) { - DUK_ASSERT_API_ENTRY(thr); - duk_pop_nodecref_unsafe(thr); -} -#else /* DUK_USE_PREFER_SIZE */ -DUK_INTERNAL void duk_pop_undefined(duk_hthread *thr) { - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT(thr->valstack_top != thr->valstack_bottom); - DUK_ASSERT(thr->valstack_top >= thr->valstack_bottom); - DUK_ASSERT((duk_size_t) (thr->valstack_top - thr->valstack_bottom) >= (duk_size_t) 1); - - DUK_ASSERT(DUK_TVAL_IS_UNDEFINED(thr->valstack_top - 1)); - thr->valstack_top--; - - DUK_ASSERT(thr->valstack_top >= thr->valstack_bottom); -} -#endif /* !DUK_USE_PREFER_SIZE */ - -#if defined(DUK_USE_PREFER_SIZE) -DUK_EXTERNAL void duk_pop_2(duk_hthread *thr) { - DUK_ASSERT_API_ENTRY(thr); - duk_pop_n(thr, 2); -} -DUK_INTERNAL void duk_pop_2_unsafe(duk_hthread *thr) { - DUK_ASSERT_API_ENTRY(thr); - duk_pop_n_unsafe(thr, 2); -} -DUK_INTERNAL void duk_pop_2_nodecref_unsafe(duk_hthread *thr) { - DUK_ASSERT_API_ENTRY(thr); - duk_pop_n_nodecref_unsafe(thr, 2); -} -#else -DUK_LOCAL DUK_ALWAYS_INLINE void duk__pop_2_unsafe_raw(duk_hthread *thr) { - duk_tval *tv; - - DUK_CTX_ASSERT_VALID(thr); - DUK_ASSERT(thr->valstack_top != thr->valstack_bottom); - DUK_ASSERT(thr->valstack_top >= thr->valstack_bottom); - DUK_ASSERT((duk_size_t) (thr->valstack_top - thr->valstack_bottom) >= (duk_size_t) 2); - - tv = --thr->valstack_top; - DUK_ASSERT(tv >= thr->valstack_bottom); -#if defined(DUK_USE_REFERENCE_COUNTING) - DUK_TVAL_SET_UNDEFINED_UPDREF(thr, tv); /* side effects */ -#else - DUK_TVAL_SET_UNDEFINED(tv); -#endif - tv = --thr->valstack_top; - DUK_ASSERT(tv >= thr->valstack_bottom); -#if defined(DUK_USE_REFERENCE_COUNTING) - DUK_TVAL_SET_UNDEFINED_UPDREF(thr, tv); /* side effects */ -#else - DUK_TVAL_SET_UNDEFINED(tv); -#endif - - DUK_ASSERT(thr->valstack_top >= thr->valstack_bottom); -} -DUK_EXTERNAL void duk_pop_2(duk_hthread *thr) { - DUK_ASSERT_API_ENTRY(thr); - - DUK_ASSERT(thr->valstack_top >= thr->valstack_bottom); - if (DUK_UNLIKELY(thr->valstack_top - 2 < thr->valstack_bottom)) { - DUK_ERROR_RANGE_INVALID_COUNT(thr); - DUK_WO_NORETURN(return;); - } - - duk__pop_2_unsafe_raw(thr); -} -DUK_INTERNAL void duk_pop_2_unsafe(duk_hthread *thr) { - DUK_ASSERT_API_ENTRY(thr); - duk__pop_2_unsafe_raw(thr); -} -DUK_INTERNAL void duk_pop_2_nodecref_unsafe(duk_hthread *thr) { - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT(thr->valstack_top != thr->valstack_bottom); - DUK_ASSERT(thr->valstack_top >= thr->valstack_bottom); - DUK_ASSERT((duk_size_t) (thr->valstack_top - thr->valstack_bottom) >= (duk_size_t) 2); - - DUK_ASSERT(DUK_TVAL_IS_UNDEFINED(thr->valstack_top - 1)); - DUK_ASSERT(DUK_TVAL_IS_UNDEFINED(thr->valstack_top - 2)); - thr->valstack_top -= 2; - - DUK_ASSERT(thr->valstack_top >= thr->valstack_bottom); -} -#endif /* !DUK_USE_PREFER_SIZE */ - -DUK_EXTERNAL void duk_pop_3(duk_hthread *thr) { - DUK_ASSERT_API_ENTRY(thr); - duk_pop_n(thr, 3); -} - -DUK_INTERNAL void duk_pop_3_unsafe(duk_hthread *thr) { - DUK_ASSERT_API_ENTRY(thr); - duk_pop_n_unsafe(thr, 3); -} - -DUK_INTERNAL void duk_pop_3_nodecref_unsafe(duk_hthread *thr) { - DUK_ASSERT_API_ENTRY(thr); - duk_pop_n_nodecref_unsafe(thr, 3); -} - -/* - * Pack and unpack (pack value stack entries into an array and vice versa) - */ - -/* XXX: pack index range? array index offset? */ -/* XXX: need ability to pack into a bare array? */ -DUK_INTERNAL void duk_pack(duk_hthread *thr, duk_idx_t count) { - duk_tval *tv_src; - duk_tval *tv_dst; - duk_tval *tv_curr; - duk_tval *tv_limit; - duk_idx_t top; - - DUK_ASSERT_API_ENTRY(thr); - - DUK_ASSERT(thr->valstack_top >= thr->valstack_bottom); - top = (duk_idx_t) (thr->valstack_top - thr->valstack_bottom); - DUK_ASSERT(top >= 0); - if (DUK_UNLIKELY((duk_uidx_t) count > (duk_uidx_t) top)) { - /* Also handles negative count. */ - DUK_ERROR_RANGE_INVALID_COUNT(thr); - DUK_WO_NORETURN(return;); - } - DUK_ASSERT(count >= 0); - - /* Wrapping is controlled by the check above: value stack top can be - * at most DUK_USE_VALSTACK_LIMIT which is low enough so that - * multiplying with sizeof(duk_tval) won't wrap. - */ - DUK_ASSERT(count >= 0 && count <= (duk_idx_t) DUK_USE_VALSTACK_LIMIT); - DUK_ASSERT((duk_size_t) count <= DUK_SIZE_MAX / sizeof(duk_tval)); /* no wrapping */ - - tv_dst = duk_push_harray_with_size_outptr(thr, (duk_uint32_t) count); /* XXX: uninitialized would be OK */ - DUK_ASSERT(count == 0 || tv_dst != NULL); - DUK_ASSERT(!duk_is_bare_object(thr, -1)); - - /* Copy value stack values directly to the array part without - * any refcount updates: net refcount changes are zero. - */ - tv_src = thr->valstack_top - count - 1; - duk_memcpy_unsafe((void *) tv_dst, (const void *) tv_src, (size_t) count * sizeof(duk_tval)); - - /* Overwrite result array to final value stack location and wipe - * the rest; no refcount operations needed. - */ - - tv_dst = tv_src; /* when count == 0, same as tv_src (OK) */ - tv_src = thr->valstack_top - 1; - DUK_TVAL_SET_TVAL(tv_dst, tv_src); - - /* XXX: internal helper to wipe a value stack segment? */ - tv_curr = tv_dst + 1; - tv_limit = thr->valstack_top; - while (tv_curr != tv_limit) { - /* Wipe policy: keep as 'undefined'. */ - DUK_TVAL_SET_UNDEFINED(tv_curr); - tv_curr++; - } - thr->valstack_top = tv_dst + 1; -} - -DUK_INTERNAL duk_idx_t duk_unpack_array_like(duk_hthread *thr, duk_idx_t idx) { - duk_tval *tv; - - DUK_ASSERT_API_ENTRY(thr); - - tv = duk_require_tval(thr, idx); - if (DUK_LIKELY(DUK_TVAL_IS_OBJECT(tv))) { - duk_hobject *h; - duk_uint32_t len; - duk_uint32_t i; - - h = DUK_TVAL_GET_OBJECT(tv); - DUK_ASSERT(h != NULL); - DUK_UNREF(h); - -#if defined(DUK_USE_ARRAY_FASTPATH) /* close enough */ - if (DUK_LIKELY(DUK_HOBJECT_IS_ARRAY(h) && ((duk_harray *) h)->length <= DUK_HOBJECT_GET_ASIZE(h))) { - duk_harray *h_arr; - duk_tval *tv_src; - duk_tval *tv_dst; - - h_arr = (duk_harray *) h; - len = h_arr->length; - if (DUK_UNLIKELY(len >= 0x80000000UL)) { - goto fail_over_2g; - } - duk_require_stack(thr, (duk_idx_t) len); - - /* The potential allocation in duk_require_stack() may - * run a finalizer which modifies the argArray so that - * e.g. becomes sparse. So, we need to recheck that the - * array didn't change size and that there's still a - * valid backing array part. - * - * XXX: alternatively, could prevent finalizers for the - * duration. - */ - if (DUK_UNLIKELY(len != h_arr->length || h_arr->length > DUK_HOBJECT_GET_ASIZE((duk_hobject *) h_arr))) { - goto skip_fast; - } - - /* Main fast path: arguments array is almost always - * an actual array (though it might also be an arguments - * object). - */ - - DUK_DDD(DUK_DDDPRINT("fast path for %ld elements", (long) h_arr->length)); - tv_src = DUK_HOBJECT_A_GET_BASE(thr->heap, h); - tv_dst = thr->valstack_top; - while (len-- > 0) { - DUK_ASSERT(tv_dst < thr->valstack_end); - if (DUK_UNLIKELY(DUK_TVAL_IS_UNUSED(tv_src))) { - /* Gaps are very unlikely. Skip over them, - * without an ancestor lookup (technically - * not compliant). - */ - DUK_ASSERT(DUK_TVAL_IS_UNDEFINED(tv_dst)); /* valstack policy */ - } else { - DUK_TVAL_SET_TVAL(tv_dst, tv_src); - DUK_TVAL_INCREF(thr, tv_dst); - } - tv_src++; - tv_dst++; - } - DUK_ASSERT(tv_dst <= thr->valstack_end); - thr->valstack_top = tv_dst; - return (duk_idx_t) h_arr->length; - } - skip_fast: -#endif /* DUK_USE_ARRAY_FASTPATH */ - - /* Slow path: actual lookups. The initial 'length' lookup - * decides the output length, regardless of side effects that - * may resize or change the argArray while we read the - * indices. - */ - idx = duk_normalize_index(thr, idx); - duk_get_prop_stridx(thr, idx, DUK_STRIDX_LENGTH); - len = duk_to_uint32(thr, -1); /* ToUint32() coercion required */ - if (DUK_UNLIKELY(len >= 0x80000000UL)) { - goto fail_over_2g; - } - duk_pop_unsafe(thr); - DUK_DDD(DUK_DDDPRINT("slow path for %ld elements", (long) len)); - - duk_require_stack(thr, (duk_idx_t) len); - for (i = 0; i < len; i++) { - duk_get_prop_index(thr, idx, (duk_uarridx_t) i); - } - return (duk_idx_t) len; - } else if (DUK_TVAL_IS_UNDEFINED(tv) || DUK_TVAL_IS_NULL(tv)) { - return 0; - } - - DUK_ERROR_TYPE_INVALID_ARGS(thr); - DUK_WO_NORETURN(return 0;); - -fail_over_2g: - DUK_ERROR_RANGE_INVALID_LENGTH(thr); - DUK_WO_NORETURN(return 0;); -} - -/* - * Error throwing - */ - -#if defined(DUK_USE_GCC_PRAGMAS) -#pragma GCC diagnostic push -#pragma GCC diagnostic ignored "-Wsuggest-attribute=noreturn" -#elif defined(DUK_USE_CLANG_PRAGMAS) -#pragma clang diagnostic push -#endif - -DUK_EXTERNAL void duk_throw_raw(duk_hthread *thr) { - duk_tval *tv_val; - - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT(thr->valstack_bottom >= thr->valstack); - DUK_ASSERT(thr->valstack_top >= thr->valstack_bottom); - DUK_ASSERT(thr->valstack_end >= thr->valstack_top); - - if (DUK_UNLIKELY(thr->valstack_top == thr->valstack_bottom)) { - DUK_ERROR_TYPE_INVALID_ARGS(thr); - DUK_WO_NORETURN(return;); - } - - /* Errors are augmented when they are created, not when they are - * thrown or re-thrown. The current error handler, however, runs - * just before an error is thrown. - */ - - /* Sync so that augmentation sees up-to-date activations, NULL - * thr->ptr_curr_pc so that it's not used if side effects occur - * in augmentation or longjmp handling. - */ - duk_hthread_sync_and_null_currpc(thr); - -#if defined(DUK_USE_AUGMENT_ERROR_THROW) - DUK_DDD(DUK_DDDPRINT("THROW ERROR (API): %!dT (before throw augment)", (duk_tval *) duk_get_tval(thr, -1))); - duk_err_augment_error_throw(thr); -#endif - DUK_DDD(DUK_DDDPRINT("THROW ERROR (API): %!dT (after throw augment)", (duk_tval *) duk_get_tval(thr, -1))); - - tv_val = DUK_GET_TVAL_NEGIDX(thr, -1); - duk_err_setup_ljstate1(thr, DUK_LJ_TYPE_THROW, tv_val); -#if defined(DUK_USE_DEBUGGER_SUPPORT) - duk_err_check_debugger_integration(thr); -#endif - - /* thr->heap->lj.jmpbuf_ptr is checked by duk_err_longjmp() so we don't - * need to check that here. If the value is NULL, a fatal error occurs - * because we can't return. - */ - - duk_err_longjmp(thr); - DUK_UNREACHABLE(); -} - -DUK_EXTERNAL void duk_fatal_raw(duk_hthread *thr, const char *err_msg) { - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT(thr != NULL); - DUK_ASSERT(thr->heap != NULL); - DUK_ASSERT(thr->heap->fatal_func != NULL); - - DUK_D(DUK_DPRINT("fatal error occurred: %s", err_msg ? err_msg : "NULL")); - - /* fatal_func should be noreturn, but noreturn declarations on function - * pointers has a very spotty support apparently so it's not currently - * done. - */ - thr->heap->fatal_func(thr->heap->heap_udata, err_msg); - - /* If the fatal handler returns, all bets are off. It'd be nice to - * print something here but since we don't want to depend on stdio, - * there's no way to do so portably. - */ - DUK_D(DUK_DPRINT("fatal error handler returned, all bets are off!")); - for (;;) { - /* loop forever, don't return (function marked noreturn) */ - } -} - -DUK_EXTERNAL void duk_error_va_raw(duk_hthread *thr, - duk_errcode_t err_code, - const char *filename, - duk_int_t line, - const char *fmt, - va_list ap) { - DUK_ASSERT_API_ENTRY(thr); - - duk_push_error_object_va_raw(thr, err_code, filename, line, fmt, ap); - (void) duk_throw(thr); - DUK_WO_NORETURN(return;); -} - -DUK_EXTERNAL void duk_error_raw(duk_hthread *thr, - duk_errcode_t err_code, - const char *filename, - duk_int_t line, - const char *fmt, - ...) { - va_list ap; - - DUK_ASSERT_API_ENTRY(thr); - - va_start(ap, fmt); - duk_push_error_object_va_raw(thr, err_code, filename, line, fmt, ap); - va_end(ap); - (void) duk_throw(thr); - DUK_WO_NORETURN(return;); -} - -#if defined(DUK_USE_GCC_PRAGMAS) -#pragma GCC diagnostic pop -#elif defined(DUK_USE_CLANG_PRAGMAS) -#pragma clang diagnostic pop -#endif - -#if !defined(DUK_USE_VARIADIC_MACROS) -DUK_NORETURN( - DUK_LOCAL_DECL void duk__throw_error_from_stash(duk_hthread *thr, duk_errcode_t err_code, const char *fmt, va_list ap)); - -DUK_LOCAL void duk__throw_error_from_stash(duk_hthread *thr, duk_errcode_t err_code, const char *fmt, va_list ap) { - const char *filename; - duk_int_t line; - - DUK_CTX_ASSERT_VALID(thr); - - filename = duk_api_global_filename; - line = duk_api_global_line; - duk_api_global_filename = NULL; - duk_api_global_line = 0; - - duk_push_error_object_va_raw(thr, err_code, filename, line, fmt, ap); - (void) duk_throw(thr); - DUK_WO_NORETURN(return;); -} - -#define DUK__ERROR_STASH_SHARED(code) \ - do { \ - va_list ap; \ - va_start(ap, fmt); \ - duk__throw_error_from_stash(thr, (code), fmt, ap); \ - va_end(ap); \ - DUK_WO_NORETURN(return 0;); \ - } while (0) - -DUK_EXTERNAL duk_ret_t duk_error_stash(duk_hthread *thr, duk_errcode_t err_code, const char *fmt, ...) { - DUK_ASSERT_API_ENTRY(thr); - DUK__ERROR_STASH_SHARED(err_code); -} -DUK_EXTERNAL duk_ret_t duk_generic_error_stash(duk_hthread *thr, const char *fmt, ...) { - DUK_ASSERT_API_ENTRY(thr); - DUK__ERROR_STASH_SHARED(DUK_ERR_ERROR); -} -DUK_EXTERNAL duk_ret_t duk_eval_error_stash(duk_hthread *thr, const char *fmt, ...) { - DUK_ASSERT_API_ENTRY(thr); - DUK__ERROR_STASH_SHARED(DUK_ERR_EVAL_ERROR); -} -DUK_EXTERNAL duk_ret_t duk_range_error_stash(duk_hthread *thr, const char *fmt, ...) { - DUK_ASSERT_API_ENTRY(thr); - DUK__ERROR_STASH_SHARED(DUK_ERR_RANGE_ERROR); -} -DUK_EXTERNAL duk_ret_t duk_reference_error_stash(duk_hthread *thr, const char *fmt, ...) { - DUK_ASSERT_API_ENTRY(thr); - DUK__ERROR_STASH_SHARED(DUK_ERR_REFERENCE_ERROR); -} -DUK_EXTERNAL duk_ret_t duk_syntax_error_stash(duk_hthread *thr, const char *fmt, ...) { - DUK_ASSERT_API_ENTRY(thr); - DUK__ERROR_STASH_SHARED(DUK_ERR_SYNTAX_ERROR); -} -DUK_EXTERNAL duk_ret_t duk_type_error_stash(duk_hthread *thr, const char *fmt, ...) { - DUK_ASSERT_API_ENTRY(thr); - DUK__ERROR_STASH_SHARED(DUK_ERR_TYPE_ERROR); -} -DUK_EXTERNAL duk_ret_t duk_uri_error_stash(duk_hthread *thr, const char *fmt, ...) { - DUK_ASSERT_API_ENTRY(thr); - DUK__ERROR_STASH_SHARED(DUK_ERR_URI_ERROR); -} -#endif /* DUK_USE_VARIADIC_MACROS */ - -/* - * Comparison - */ - -DUK_EXTERNAL duk_bool_t duk_equals(duk_hthread *thr, duk_idx_t idx1, duk_idx_t idx2) { - duk_tval *tv1, *tv2; - - DUK_ASSERT_API_ENTRY(thr); - - tv1 = duk_get_tval(thr, idx1); - tv2 = duk_get_tval(thr, idx2); - if ((tv1 == NULL) || (tv2 == NULL)) { - return 0; - } - - /* Coercion may be needed, the helper handles that by pushing the - * tagged values to the stack. - */ - return duk_js_equals(thr, tv1, tv2); -} - -DUK_EXTERNAL duk_bool_t duk_strict_equals(duk_hthread *thr, duk_idx_t idx1, duk_idx_t idx2) { - duk_tval *tv1, *tv2; - - DUK_ASSERT_API_ENTRY(thr); - - tv1 = duk_get_tval(thr, idx1); - tv2 = duk_get_tval(thr, idx2); - if ((tv1 == NULL) || (tv2 == NULL)) { - return 0; - } - - /* No coercions or other side effects, so safe */ - return duk_js_strict_equals(tv1, tv2); -} - -DUK_EXTERNAL duk_bool_t duk_samevalue(duk_hthread *thr, duk_idx_t idx1, duk_idx_t idx2) { - duk_tval *tv1, *tv2; - - DUK_ASSERT_API_ENTRY(thr); - - tv1 = duk_get_tval(thr, idx1); - tv2 = duk_get_tval(thr, idx2); - if ((tv1 == NULL) || (tv2 == NULL)) { - return 0; - } - - /* No coercions or other side effects, so safe */ - return duk_js_samevalue(tv1, tv2); -} - -/* - * instanceof - */ - -DUK_EXTERNAL duk_bool_t duk_instanceof(duk_hthread *thr, duk_idx_t idx1, duk_idx_t idx2) { - duk_tval *tv1, *tv2; - - DUK_ASSERT_API_ENTRY(thr); - - /* Index validation is strict, which differs from duk_equals(). - * The strict behavior mimics how instanceof itself works, e.g. - * it is a TypeError if rval is not a -callable- object. It would - * be somewhat inconsistent if rval would be allowed to be - * non-existent without a TypeError. - */ - tv1 = duk_require_tval(thr, idx1); - DUK_ASSERT(tv1 != NULL); - tv2 = duk_require_tval(thr, idx2); - DUK_ASSERT(tv2 != NULL); - - return duk_js_instanceof(thr, tv1, tv2); -} - -/* - * Lightfunc - */ - -DUK_INTERNAL void duk_push_lightfunc_name_raw(duk_hthread *thr, duk_c_function func, duk_small_uint_t lf_flags) { - /* Lightfunc name, includes Duktape/C native function pointer, which - * can often be used to locate the function from a symbol table. - * The name also includes the 16-bit duk_tval flags field because it - * includes the magic value. Because a single native function often - * provides different functionality depending on the magic value, it - * seems reasonably to include it in the name. - * - * On the other hand, a complicated name increases string table - * pressure in low memory environments (but only when function name - * is accessed). - */ - - DUK_ASSERT_API_ENTRY(thr); - - duk_push_literal(thr, "light_"); - duk_push_string_funcptr(thr, (duk_uint8_t *) &func, sizeof(func)); - duk_push_sprintf(thr, "_%04x", (unsigned int) lf_flags); - duk_concat(thr, 3); -} - -DUK_INTERNAL void duk_push_lightfunc_name(duk_hthread *thr, duk_tval *tv) { - duk_c_function func; - duk_small_uint_t lf_flags; - - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT(DUK_TVAL_IS_LIGHTFUNC(tv)); - - DUK_TVAL_GET_LIGHTFUNC(tv, func, lf_flags); - duk_push_lightfunc_name_raw(thr, func, lf_flags); -} - -DUK_INTERNAL void duk_push_lightfunc_tostring(duk_hthread *thr, duk_tval *tv) { - duk_c_function func; - duk_small_uint_t lf_flags; - - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT(DUK_TVAL_IS_LIGHTFUNC(tv)); - - DUK_TVAL_GET_LIGHTFUNC(tv, func, lf_flags); /* read before 'tv' potentially invalidated */ - duk_push_literal(thr, "function "); - duk_push_lightfunc_name_raw(thr, func, lf_flags); - duk_push_literal(thr, "() { [lightfunc code] }"); - duk_concat(thr, 3); -} - -/* - * Function pointers - * - * Printing function pointers is non-portable, so we do that by hex printing - * bytes from memory. - */ - -DUK_INTERNAL void duk_push_string_funcptr(duk_hthread *thr, duk_uint8_t *ptr, duk_size_t sz) { - duk_uint8_t buf[32 * 2]; - duk_uint8_t *p, *q; - duk_small_uint_t i; - duk_small_uint_t t; - - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT(sz <= 32); /* sanity limit for function pointer size */ - - p = buf; -#if defined(DUK_USE_INTEGER_LE) - q = ptr + sz; -#else - q = ptr; -#endif - for (i = 0; i < sz; i++) { -#if defined(DUK_USE_INTEGER_LE) - t = *(--q); -#else - t = *(q++); -#endif - *p++ = duk_lc_digits[t >> 4]; - *p++ = duk_lc_digits[t & 0x0f]; - } - - duk_push_lstring(thr, (const char *) buf, sz * 2); -} - -/* - * Push readable string summarizing duk_tval. The operation is side effect - * free and will only throw from internal errors (e.g. out of memory). - * This is used by e.g. property access code to summarize a key/base safely, - * and is not intended to be fast (but small and safe). - */ - -/* String limits for summary strings. */ -#define DUK__READABLE_SUMMARY_MAXCHARS 96 /* maximum supported by helper */ -#define DUK__READABLE_STRING_MAXCHARS 32 /* for strings/symbols */ -#define DUK__READABLE_ERRMSG_MAXCHARS 96 /* for error messages */ - -/* String sanitizer which escapes ASCII control characters and a few other - * ASCII characters, passes Unicode as is, and replaces invalid UTF-8 with - * question marks. No errors are thrown for any input string, except in out - * of memory situations. - */ -DUK_LOCAL void duk__push_hstring_readable_unicode(duk_hthread *thr, duk_hstring *h_input, duk_small_uint_t maxchars) { - const duk_uint8_t *p, *p_start, *p_end; - duk_uint8_t buf[DUK_UNICODE_MAX_XUTF8_LENGTH * DUK__READABLE_SUMMARY_MAXCHARS + 2 /*quotes*/ + 3 /*periods*/]; - duk_uint8_t *q; - duk_ucodepoint_t cp; - duk_small_uint_t nchars; - - DUK_CTX_ASSERT_VALID(thr); - DUK_ASSERT(h_input != NULL); - DUK_ASSERT(maxchars <= DUK__READABLE_SUMMARY_MAXCHARS); - - p_start = (const duk_uint8_t *) DUK_HSTRING_GET_DATA(h_input); - p_end = p_start + DUK_HSTRING_GET_BYTELEN(h_input); - p = p_start; - q = buf; - - nchars = 0; - *q++ = (duk_uint8_t) DUK_ASC_SINGLEQUOTE; - for (;;) { - if (p >= p_end) { - break; - } - if (nchars == maxchars) { - *q++ = (duk_uint8_t) DUK_ASC_PERIOD; - *q++ = (duk_uint8_t) DUK_ASC_PERIOD; - *q++ = (duk_uint8_t) DUK_ASC_PERIOD; - break; - } - if (duk_unicode_decode_xutf8(thr, &p, p_start, p_end, &cp)) { - if (cp < 0x20 || cp == 0x7f || cp == DUK_ASC_SINGLEQUOTE || cp == DUK_ASC_BACKSLASH) { - DUK_ASSERT(DUK_UNICODE_MAX_XUTF8_LENGTH >= 4); /* estimate is valid */ - DUK_ASSERT((cp >> 4) <= 0x0f); - *q++ = (duk_uint8_t) DUK_ASC_BACKSLASH; - *q++ = (duk_uint8_t) DUK_ASC_LC_X; - *q++ = (duk_uint8_t) duk_lc_digits[cp >> 4]; - *q++ = (duk_uint8_t) duk_lc_digits[cp & 0x0f]; - } else { - q += duk_unicode_encode_xutf8(cp, q); - } - } else { - p++; /* advance manually */ - *q++ = (duk_uint8_t) DUK_ASC_QUESTION; - } - nchars++; - } - *q++ = (duk_uint8_t) DUK_ASC_SINGLEQUOTE; - - duk_push_lstring(thr, (const char *) buf, (duk_size_t) (q - buf)); -} - -DUK_LOCAL const char *duk__push_string_tval_readable(duk_hthread *thr, duk_tval *tv, duk_bool_t error_aware) { - DUK_CTX_ASSERT_VALID(thr); - /* 'tv' may be NULL */ - - if (tv == NULL) { - duk_push_literal(thr, "none"); - } else { - switch (DUK_TVAL_GET_TAG(tv)) { - case DUK_TAG_STRING: { - duk_hstring *h = DUK_TVAL_GET_STRING(tv); - if (DUK_HSTRING_HAS_SYMBOL(h)) { - /* XXX: string summary produces question marks - * so this is not very ideal. - */ - duk_push_literal(thr, "[Symbol "); - duk_push_string(thr, duk__get_symbol_type_string(h)); - duk_push_literal(thr, " "); - duk__push_hstring_readable_unicode(thr, h, DUK__READABLE_STRING_MAXCHARS); - duk_push_literal(thr, "]"); - duk_concat(thr, 5); - break; - } - duk__push_hstring_readable_unicode(thr, h, DUK__READABLE_STRING_MAXCHARS); - break; - } - case DUK_TAG_OBJECT: { - duk_hobject *h = DUK_TVAL_GET_OBJECT(tv); - DUK_ASSERT(h != NULL); - - if (error_aware && duk_hobject_prototype_chain_contains(thr, - h, - thr->builtins[DUK_BIDX_ERROR_PROTOTYPE], - 1 /*ignore_loop*/)) { - /* Get error message in a side effect free way if - * possible; if not, summarize as a generic object. - * Error message currently gets quoted. - */ - /* XXX: better internal getprop call; get without side effects - * but traverse inheritance chain. - */ - duk_tval *tv_msg; - tv_msg = duk_hobject_find_entry_tval_ptr_stridx(thr->heap, h, DUK_STRIDX_MESSAGE); - if (tv_msg != NULL && DUK_TVAL_IS_STRING(tv_msg)) { - /* It's critical to avoid recursion so - * only summarize a string .message. - */ - duk__push_hstring_readable_unicode(thr, - DUK_TVAL_GET_STRING(tv_msg), - DUK__READABLE_ERRMSG_MAXCHARS); - break; - } - } - duk_push_class_string_tval(thr, tv, 1 /*avoid_side_effects*/); - break; - } - case DUK_TAG_BUFFER: { - /* While plain buffers mimic Uint8Arrays, they summarize differently. - * This is useful so that the summarized string accurately reflects the - * internal type which may matter for figuring out bugs etc. - */ - /* XXX: Hex encoded, length limited buffer summary here? */ - duk_hbuffer *h = DUK_TVAL_GET_BUFFER(tv); - DUK_ASSERT(h != NULL); - duk_push_sprintf(thr, "[buffer:%ld]", (long) DUK_HBUFFER_GET_SIZE(h)); - break; - } - case DUK_TAG_POINTER: { - /* Surround with parentheses like in JX, ensures NULL pointer - * is distinguishable from null value ("(null)" vs "null"). - */ - duk_push_tval(thr, tv); - duk_push_sprintf(thr, "(%s)", duk_to_string(thr, -1)); - duk_remove_m2(thr); - break; - } - default: { - duk_push_tval(thr, tv); - break; - } - } - } - - return duk_to_string(thr, -1); -} -DUK_INTERNAL const char *duk_push_string_tval_readable(duk_hthread *thr, duk_tval *tv) { - DUK_ASSERT_API_ENTRY(thr); - return duk__push_string_tval_readable(thr, tv, 0 /*error_aware*/); -} - -DUK_INTERNAL const char *duk_push_string_readable(duk_hthread *thr, duk_idx_t idx) { - DUK_ASSERT_API_ENTRY(thr); - return duk_push_string_tval_readable(thr, duk_get_tval(thr, idx)); -} - -DUK_INTERNAL const char *duk_push_string_tval_readable_error(duk_hthread *thr, duk_tval *tv) { - DUK_ASSERT_API_ENTRY(thr); - return duk__push_string_tval_readable(thr, tv, 1 /*error_aware*/); -} - -DUK_INTERNAL void duk_push_symbol_descriptive_string(duk_hthread *thr, duk_hstring *h) { - const duk_uint8_t *p; - const duk_uint8_t *p_end; - const duk_uint8_t *q; - - DUK_ASSERT_API_ENTRY(thr); - - /* .toString() */ - duk_push_literal(thr, "Symbol("); - p = (const duk_uint8_t *) DUK_HSTRING_GET_DATA(h); - p_end = p + DUK_HSTRING_GET_BYTELEN(h); - DUK_ASSERT(p[0] == 0xff || (p[0] & 0xc0) == 0x80); - p++; - for (q = p; q < p_end; q++) { - if (*q == 0xffU) { - /* Terminate either at end-of-string (but NUL MUST - * be accepted without terminating description) or - * 0xFF, which is used to mark start of unique trailer - * (and cannot occur in CESU-8 / extended UTF-8). - */ - break; - } - } - duk_push_lstring(thr, (const char *) p, (duk_size_t) (q - p)); - duk_push_literal(thr, ")"); - duk_concat(thr, 3); -} - -/* - * Functions - */ - -#if 0 /* not used yet */ -DUK_INTERNAL void duk_push_hnatfunc_name(duk_hthread *thr, duk_hnatfunc *h) { - duk_c_function func; - - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT(h != NULL); - DUK_ASSERT(DUK_HOBJECT_IS_NATFUNC((duk_hobject *) h)); - - duk_push_sprintf(thr, "native_"); - func = h->func; - duk_push_string_funcptr(thr, (duk_uint8_t *) &func, sizeof(func)); - duk_push_sprintf(thr, "_%04x_%04x", - (unsigned int) (duk_uint16_t) h->nargs, - (unsigned int) (duk_uint16_t) h->magic); - duk_concat(thr, 3); -} -#endif - -/* - * duk_tval slice copy - */ - -DUK_INTERNAL void duk_copy_tvals_incref(duk_hthread *thr, duk_tval *tv_dst, duk_tval *tv_src, duk_size_t count) { - duk_tval *tv; - - DUK_ASSERT_API_ENTRY(thr); - DUK_UNREF(thr); - DUK_ASSERT(count * sizeof(duk_tval) >= count); /* no wrap */ - - duk_memcpy_unsafe((void *) tv_dst, (const void *) tv_src, count * sizeof(duk_tval)); - - tv = tv_dst; - while (count-- > 0) { - DUK_TVAL_INCREF(thr, tv); - tv++; - } -} - -/* automatic undefs */ -#undef DUK__ASSERT_SPACE -#undef DUK__CHECK_SPACE -#undef DUK__ERROR_STASH_SHARED -#undef DUK__PACK_ARGS -#undef DUK__READABLE_ERRMSG_MAXCHARS -#undef DUK__READABLE_STRING_MAXCHARS -#undef DUK__READABLE_SUMMARY_MAXCHARS -#line 1 "duk_api_string.c" -/* - * String manipulation - */ - -/* #include duk_internal.h -> already included */ - -DUK_LOCAL void duk__concat_and_join_helper(duk_hthread *thr, duk_idx_t count_in, duk_bool_t is_join) { - duk_uint_t count; - duk_uint_t i; - duk_size_t idx; - duk_size_t len; - duk_hstring *h; - duk_uint8_t *buf; - - DUK_CTX_ASSERT_VALID(thr); - - if (DUK_UNLIKELY(count_in <= 0)) { - if (count_in < 0) { - DUK_ERROR_RANGE_INVALID_COUNT(thr); - DUK_WO_NORETURN(return;); - } - DUK_ASSERT(count_in == 0); - duk_push_hstring_empty(thr); - return; - } - count = (duk_uint_t) count_in; - - if (is_join) { - duk_size_t t1, t2, limit; - h = duk_to_hstring(thr, -((duk_idx_t) count) - 1); - DUK_ASSERT(h != NULL); - - /* A bit tricky overflow test, see doc/code-issues.rst. */ - t1 = (duk_size_t) DUK_HSTRING_GET_BYTELEN(h); - t2 = (duk_size_t) (count - 1); - limit = (duk_size_t) DUK_HSTRING_MAX_BYTELEN; - if (DUK_UNLIKELY(t2 != 0 && t1 > limit / t2)) { - /* Combined size of separators already overflows. */ - goto error_overflow; - } - len = (duk_size_t) (t1 * t2); - } else { - len = (duk_size_t) 0; - } - - for (i = count; i >= 1; i--) { - duk_size_t new_len; - h = duk_to_hstring(thr, -((duk_idx_t) i)); - new_len = len + (duk_size_t) DUK_HSTRING_GET_BYTELEN(h); - - /* Impose a string maximum length, need to handle overflow - * correctly. - */ - if (new_len < len || /* wrapped */ - new_len > (duk_size_t) DUK_HSTRING_MAX_BYTELEN) { - goto error_overflow; - } - len = new_len; - } - - DUK_DDD(DUK_DDDPRINT("join/concat %lu strings, total length %lu bytes", (unsigned long) count, (unsigned long) len)); - - /* Use stack allocated buffer to ensure reachability in errors - * (e.g. intern error). - */ - buf = (duk_uint8_t *) duk_push_fixed_buffer_nozero(thr, len); - DUK_ASSERT(buf != NULL); - - /* [ ... (sep) str1 str2 ... strN buf ] */ - - idx = 0; - for (i = count; i >= 1; i--) { - if (is_join && i != count) { - h = duk_require_hstring(thr, -((duk_idx_t) count) - 2); /* extra -1 for buffer */ - duk_memcpy(buf + idx, DUK_HSTRING_GET_DATA(h), DUK_HSTRING_GET_BYTELEN(h)); - idx += DUK_HSTRING_GET_BYTELEN(h); - } - h = duk_require_hstring(thr, -((duk_idx_t) i) - 1); /* extra -1 for buffer */ - duk_memcpy(buf + idx, DUK_HSTRING_GET_DATA(h), DUK_HSTRING_GET_BYTELEN(h)); - idx += DUK_HSTRING_GET_BYTELEN(h); - } - - DUK_ASSERT(idx == len); - - /* [ ... (sep) str1 str2 ... strN buf ] */ - - /* Get rid of the strings early to minimize memory use before intern. */ - - if (is_join) { - duk_replace(thr, -((duk_idx_t) count) - 2); /* overwrite sep */ - duk_pop_n(thr, (duk_idx_t) count); - } else { - duk_replace(thr, -((duk_idx_t) count) - 1); /* overwrite str1 */ - duk_pop_n(thr, (duk_idx_t) (count - 1)); - } - - /* [ ... buf ] */ - - (void) duk_buffer_to_string(thr, -1); /* Safe if inputs are safe. */ - - /* [ ... res ] */ - return; - -error_overflow: - DUK_ERROR_RANGE(thr, DUK_STR_RESULT_TOO_LONG); - DUK_WO_NORETURN(return;); -} - -DUK_EXTERNAL void duk_concat(duk_hthread *thr, duk_idx_t count) { - DUK_ASSERT_API_ENTRY(thr); - - duk__concat_and_join_helper(thr, count, 0 /*is_join*/); -} - -#if defined(DUK_USE_PREFER_SIZE) -DUK_INTERNAL void duk_concat_2(duk_hthread *thr) { - DUK_ASSERT_API_ENTRY(thr); - duk_concat(thr, 2); -} -#else /* DUK_USE_PREFER_SIZE */ -DUK_INTERNAL void duk_concat_2(duk_hthread *thr) { - duk_hstring *h1; - duk_hstring *h2; - duk_uint8_t *buf; - duk_size_t len1; - duk_size_t len2; - duk_size_t len; - - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT(duk_get_top(thr) >= 2); /* Trusted caller. */ - - h1 = duk_to_hstring(thr, -2); - h2 = duk_to_hstring(thr, -1); - len1 = (duk_size_t) DUK_HSTRING_GET_BYTELEN(h1); - len2 = (duk_size_t) DUK_HSTRING_GET_BYTELEN(h2); - len = len1 + len2; - if (DUK_UNLIKELY(len < len1 || /* wrapped */ - len > (duk_size_t) DUK_HSTRING_MAX_BYTELEN)) { - goto error_overflow; - } - buf = (duk_uint8_t *) duk_push_fixed_buffer_nozero(thr, len); - DUK_ASSERT(buf != NULL); - - duk_memcpy((void *) buf, (const void *) DUK_HSTRING_GET_DATA(h1), (size_t) len1); - duk_memcpy((void *) (buf + len1), (const void *) DUK_HSTRING_GET_DATA(h2), (size_t) len2); - (void) duk_buffer_to_string(thr, -1); /* Safe if inputs are safe. */ - - /* [ ... str1 str2 buf ] */ - - duk_replace(thr, -3); - duk_pop_unsafe(thr); - return; - -error_overflow: - DUK_ERROR_RANGE(thr, DUK_STR_RESULT_TOO_LONG); - DUK_WO_NORETURN(return;); -} -#endif /* DUK_USE_PREFER_SIZE */ - -DUK_EXTERNAL void duk_join(duk_hthread *thr, duk_idx_t count) { - DUK_ASSERT_API_ENTRY(thr); - - duk__concat_and_join_helper(thr, count, 1 /*is_join*/); -} - -/* XXX: could map/decode be unified with duk_unicode_support.c code? - * Case conversion needs also the character surroundings though. - */ - -DUK_EXTERNAL void duk_decode_string(duk_hthread *thr, duk_idx_t idx, duk_decode_char_function callback, void *udata) { - duk_hstring *h_input; - const duk_uint8_t *p, *p_start, *p_end; - duk_codepoint_t cp; - - DUK_ASSERT_API_ENTRY(thr); - - h_input = duk_require_hstring(thr, idx); /* Accept symbols. */ - DUK_ASSERT(h_input != NULL); - - p_start = (const duk_uint8_t *) DUK_HSTRING_GET_DATA(h_input); - p_end = p_start + DUK_HSTRING_GET_BYTELEN(h_input); - p = p_start; - - for (;;) { - if (p >= p_end) { - break; - } - cp = (duk_codepoint_t) duk_unicode_decode_xutf8_checked(thr, &p, p_start, p_end); - callback(udata, cp); - } -} - -DUK_EXTERNAL void duk_map_string(duk_hthread *thr, duk_idx_t idx, duk_map_char_function callback, void *udata) { - duk_hstring *h_input; - duk_bufwriter_ctx bw_alloc; - duk_bufwriter_ctx *bw; - const duk_uint8_t *p, *p_start, *p_end; - duk_codepoint_t cp; - - DUK_ASSERT_API_ENTRY(thr); - - idx = duk_normalize_index(thr, idx); - - h_input = duk_require_hstring(thr, idx); /* Accept symbols. */ - DUK_ASSERT(h_input != NULL); - - bw = &bw_alloc; - DUK_BW_INIT_PUSHBUF(thr, bw, DUK_HSTRING_GET_BYTELEN(h_input)); /* Reasonable output estimate. */ - - p_start = (const duk_uint8_t *) DUK_HSTRING_GET_DATA(h_input); - p_end = p_start + DUK_HSTRING_GET_BYTELEN(h_input); - p = p_start; - - for (;;) { - /* XXX: could write output in chunks with fewer ensure calls, - * but relative benefit would be small here. - */ - - if (p >= p_end) { - break; - } - cp = (duk_codepoint_t) duk_unicode_decode_xutf8_checked(thr, &p, p_start, p_end); - cp = callback(udata, cp); - - DUK_BW_WRITE_ENSURE_XUTF8(thr, bw, cp); - } - - DUK_BW_COMPACT(thr, bw); - (void) duk_buffer_to_string(thr, -1); /* Safe, extended UTF-8 encoded. */ - duk_replace(thr, idx); -} - -DUK_EXTERNAL void duk_substring(duk_hthread *thr, duk_idx_t idx, duk_size_t start_offset, duk_size_t end_offset) { - duk_hstring *h; - duk_hstring *res; - duk_size_t start_byte_offset; - duk_size_t end_byte_offset; - duk_size_t charlen; - - DUK_ASSERT_API_ENTRY(thr); - - idx = duk_require_normalize_index(thr, idx); /* Accept symbols. */ - h = duk_require_hstring(thr, idx); - DUK_ASSERT(h != NULL); - - charlen = DUK_HSTRING_GET_CHARLEN(h); - if (end_offset >= charlen) { - end_offset = charlen; - } - if (start_offset > end_offset) { - start_offset = end_offset; - } - - DUK_ASSERT_DISABLE(start_offset >= 0); - DUK_ASSERT(start_offset <= end_offset && start_offset <= DUK_HSTRING_GET_CHARLEN(h)); - DUK_ASSERT_DISABLE(end_offset >= 0); - DUK_ASSERT(end_offset >= start_offset && end_offset <= DUK_HSTRING_GET_CHARLEN(h)); - - /* Guaranteed by string limits. */ - DUK_ASSERT(start_offset <= DUK_UINT32_MAX); - DUK_ASSERT(end_offset <= DUK_UINT32_MAX); - - start_byte_offset = (duk_size_t) duk_heap_strcache_offset_char2byte(thr, h, (duk_uint_fast32_t) start_offset); - end_byte_offset = (duk_size_t) duk_heap_strcache_offset_char2byte(thr, h, (duk_uint_fast32_t) end_offset); - - DUK_ASSERT(end_byte_offset >= start_byte_offset); - DUK_ASSERT(end_byte_offset - start_byte_offset <= DUK_UINT32_MAX); /* Guaranteed by string limits. */ - - /* No size check is necessary. */ - res = duk_heap_strtable_intern_checked(thr, - DUK_HSTRING_GET_DATA(h) + start_byte_offset, - (duk_uint32_t) (end_byte_offset - start_byte_offset)); - - duk_push_hstring(thr, res); - duk_replace(thr, idx); -} - -/* XXX: this is quite clunky. Add Unicode helpers to scan backwards and - * forwards with a callback to process codepoints? - */ -DUK_EXTERNAL void duk_trim(duk_hthread *thr, duk_idx_t idx) { - duk_hstring *h; - const duk_uint8_t *p, *p_start, *p_end, *p_tmp1, *p_tmp2; /* pointers for scanning */ - const duk_uint8_t *q_start, *q_end; /* start (incl) and end (excl) of trimmed part */ - duk_codepoint_t cp; - - DUK_ASSERT_API_ENTRY(thr); - - idx = duk_require_normalize_index(thr, idx); /* Accept symbols. */ - h = duk_require_hstring(thr, idx); - DUK_ASSERT(h != NULL); - - p_start = DUK_HSTRING_GET_DATA(h); - p_end = p_start + DUK_HSTRING_GET_BYTELEN(h); - - p = p_start; - while (p < p_end) { - p_tmp1 = p; - cp = (duk_codepoint_t) duk_unicode_decode_xutf8_checked(thr, &p_tmp1, p_start, p_end); - if (!(duk_unicode_is_whitespace(cp) || duk_unicode_is_line_terminator(cp))) { - break; - } - p = p_tmp1; - } - q_start = p; - if (p == p_end) { - /* Entire string is whitespace. */ - q_end = p; - goto scan_done; - } - - p = p_end; - while (p > p_start) { - p_tmp1 = p; - while (p > p_start) { - p--; - if (((*p) & 0xc0) != 0x80) { - break; - } - } - p_tmp2 = p; - - cp = (duk_codepoint_t) duk_unicode_decode_xutf8_checked(thr, &p_tmp2, p_start, p_end); - if (!(duk_unicode_is_whitespace(cp) || duk_unicode_is_line_terminator(cp))) { - p = p_tmp1; - break; - } - } - q_end = p; - -scan_done: - /* This may happen when forward and backward scanning disagree - * (possible for non-extended-UTF-8 strings). - */ - if (q_end < q_start) { - q_end = q_start; - } - - DUK_ASSERT(q_start >= p_start && q_start <= p_end); - DUK_ASSERT(q_end >= p_start && q_end <= p_end); - DUK_ASSERT(q_end >= q_start); - - DUK_DDD(DUK_DDDPRINT("trim: p_start=%p, p_end=%p, q_start=%p, q_end=%p", - (const void *) p_start, - (const void *) p_end, - (const void *) q_start, - (const void *) q_end)); - - if (q_start == p_start && q_end == p_end) { - DUK_DDD(DUK_DDDPRINT("nothing was trimmed: avoid interning (hashing etc)")); - return; - } - - duk_push_lstring(thr, (const char *) q_start, (duk_size_t) (q_end - q_start)); - duk_replace(thr, idx); -} - -DUK_EXTERNAL duk_codepoint_t duk_char_code_at(duk_hthread *thr, duk_idx_t idx, duk_size_t char_offset) { - duk_hstring *h; - duk_ucodepoint_t cp; - - DUK_ASSERT_API_ENTRY(thr); - - /* XXX: Share code with String.prototype.charCodeAt? Main difference - * is handling of clamped offsets. - */ - - h = duk_require_hstring(thr, idx); /* Accept symbols. */ - DUK_ASSERT(h != NULL); - - DUK_ASSERT_DISABLE(char_offset >= 0); /* Always true, arg is unsigned. */ - if (char_offset >= DUK_HSTRING_GET_CHARLEN(h)) { - return 0; - } - - DUK_ASSERT(char_offset <= DUK_UINT_MAX); /* Guaranteed by string limits. */ - cp = duk_hstring_char_code_at_raw(thr, h, (duk_uint_t) char_offset, 0 /*surrogate_aware*/); - return (duk_codepoint_t) cp; -} -#line 1 "duk_api_time.c" -/* - * Date/time. - */ - -/* #include duk_internal.h -> already included */ - -DUK_INTERNAL duk_double_t duk_time_get_ecmascript_time(duk_hthread *thr) { - /* ECMAScript time, with millisecond fractions. Exposed via - * duk_get_now() for example. - */ - DUK_UNREF(thr); - return (duk_double_t) DUK_USE_DATE_GET_NOW(thr); -} - -DUK_INTERNAL duk_double_t duk_time_get_ecmascript_time_nofrac(duk_hthread *thr) { - /* ECMAScript time without millisecond fractions. Exposed via - * the Date built-in which doesn't allow fractions. - */ - DUK_UNREF(thr); - return (duk_double_t) DUK_FLOOR(DUK_USE_DATE_GET_NOW(thr)); -} - -DUK_INTERNAL duk_double_t duk_time_get_monotonic_time(duk_hthread *thr) { - DUK_UNREF(thr); -#if defined(DUK_USE_GET_MONOTONIC_TIME) - return (duk_double_t) DUK_USE_GET_MONOTONIC_TIME(thr); -#else - return (duk_double_t) DUK_USE_DATE_GET_NOW(thr); -#endif -} - -DUK_EXTERNAL duk_double_t duk_get_now(duk_hthread *thr) { - DUK_ASSERT_API_ENTRY(thr); - DUK_UNREF(thr); - - /* This API intentionally allows millisecond fractions. */ - return duk_time_get_ecmascript_time(thr); -} - -#if 0 /* XXX: worth exposing? */ -DUK_EXTERNAL duk_double_t duk_get_monotonic_time(duk_hthread *thr) { - DUK_ASSERT_API_ENTRY(thr); - DUK_UNREF(thr); - - return duk_time_get_monotonic_time(thr); -} -#endif - -DUK_EXTERNAL void duk_time_to_components(duk_hthread *thr, duk_double_t timeval, duk_time_components *comp) { - duk_int_t parts[DUK_DATE_IDX_NUM_PARTS]; - duk_double_t dparts[DUK_DATE_IDX_NUM_PARTS]; - duk_uint_t flags; - - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT(comp != NULL); /* XXX: or check? */ - DUK_UNREF(thr); - - /* Convert as one-based, but change month to zero-based to match the - * ECMAScript Date built-in behavior 1:1. - */ - flags = DUK_DATE_FLAG_ONEBASED | DUK_DATE_FLAG_NAN_TO_ZERO; - - duk_bi_date_timeval_to_parts(timeval, parts, dparts, flags); - - /* XXX: sub-millisecond accuracy for the API */ - - DUK_ASSERT(dparts[DUK_DATE_IDX_MONTH] >= 1.0 && dparts[DUK_DATE_IDX_MONTH] <= 12.0); - comp->year = dparts[DUK_DATE_IDX_YEAR]; - comp->month = dparts[DUK_DATE_IDX_MONTH] - 1.0; - comp->day = dparts[DUK_DATE_IDX_DAY]; - comp->hours = dparts[DUK_DATE_IDX_HOUR]; - comp->minutes = dparts[DUK_DATE_IDX_MINUTE]; - comp->seconds = dparts[DUK_DATE_IDX_SECOND]; - comp->milliseconds = dparts[DUK_DATE_IDX_MILLISECOND]; - comp->weekday = dparts[DUK_DATE_IDX_WEEKDAY]; -} - -DUK_EXTERNAL duk_double_t duk_components_to_time(duk_hthread *thr, duk_time_components *comp) { - duk_double_t d; - duk_double_t dparts[DUK_DATE_IDX_NUM_PARTS]; - duk_uint_t flags; - - DUK_ASSERT_API_ENTRY(thr); - DUK_ASSERT(comp != NULL); /* XXX: or check? */ - DUK_UNREF(thr); - - /* Match Date constructor behavior (with UTC time). Month is given - * as zero-based. Day-of-month is given as one-based so normalize - * it to zero-based as the internal conversion helpers expects all - * components to be zero-based. - */ - flags = 0; - - /* XXX: expensive conversion; use array format in API instead, or unify - * time provider and time API to use same struct? - */ - - dparts[DUK_DATE_IDX_YEAR] = comp->year; - dparts[DUK_DATE_IDX_MONTH] = comp->month; - dparts[DUK_DATE_IDX_DAY] = comp->day - 1.0; - dparts[DUK_DATE_IDX_HOUR] = comp->hours; - dparts[DUK_DATE_IDX_MINUTE] = comp->minutes; - dparts[DUK_DATE_IDX_SECOND] = comp->seconds; - dparts[DUK_DATE_IDX_MILLISECOND] = comp->milliseconds; - dparts[DUK_DATE_IDX_WEEKDAY] = 0; /* ignored */ - - d = duk_bi_date_get_timeval_from_dparts(dparts, flags); - - return d; -} -#line 1 "duk_bi_array.c" -/* - * Array built-ins - * - * Most Array built-ins are intentionally generic in ECMAScript, and are - * intended to work even when the 'this' binding is not an Array instance. - * This ECMAScript feature is also used by much real world code. For this - * reason the implementations here don't assume exotic Array behavior or - * e.g. presence of a .length property. However, some algorithms have a - * fast path for duk_harray backed actual Array instances, enabled when - * footprint is not a concern. - * - * XXX: the "Throw" flag should be set for (almost?) all [[Put]] and - * [[Delete]] operations, but it's currently false throughout. Go through - * all put/delete cases and check throw flag use. Need a new API primitive - * which allows throws flag to be specified. - * - * XXX: array lengths above 2G won't work reliably. There are many places - * where one needs a full signed 32-bit range ([-0xffffffff, 0xffffffff], - * i.e. -33- bits). Although array 'length' cannot be written to be outside - * the unsigned 32-bit range (E5.1 Section 15.4.5.1 throws a RangeError if so) - * some intermediate values may be above 0xffffffff and this may not be always - * correctly handled now (duk_uint32_t is not enough for all algorithms). - * For instance, push() can legitimately write entries beyond length 0xffffffff - * and cause a RangeError only at the end. To do this properly, the current - * push() implementation tracks the array index using a 'double' instead of a - * duk_uint32_t (which is somewhat awkward). See test-bi-array-push-maxlen.js. - * - * On using "put" vs. "def" prop - * ============================= - * - * Code below must be careful to use the appropriate primitive as it matters - * for compliance. When using "put" there may be inherited properties in - * Array.prototype which cause side effects when values are written. When - * using "define" there are no such side effects, and many test262 test cases - * check for this (for real world code, such side effects are very rare). - * Both "put" and "define" are used in the E5.1 specification; as a rule, - * "put" is used when modifying an existing array (or a non-array 'this' - * binding) and "define" for setting values into a fresh result array. - */ - -/* #include duk_internal.h -> already included */ - -/* Perform an intermediate join when this many elements have been pushed - * on the value stack. - */ -#define DUK__ARRAY_MID_JOIN_LIMIT 4096 - -#if defined(DUK_USE_ARRAY_BUILTIN) - -/* - * Shared helpers. - */ - -/* Shared entry code for many Array built-ins: the 'this' binding is pushed - * on the value stack and object coerced, and the current .length is returned. - * Note that length is left on stack (it could be popped, but that's not - * usually necessary because call handling will clean it up automatically). - */ -DUK_LOCAL duk_uint32_t duk__push_this_obj_len_u32(duk_hthread *thr) { - duk_uint32_t len; - - /* XXX: push more directly? */ - (void) duk_push_this_coercible_to_object(thr); - DUK_HOBJECT_ASSERT_VALID(duk_get_hobject(thr, -1)); - duk_get_prop_stridx_short(thr, -1, DUK_STRIDX_LENGTH); - len = duk_to_uint32(thr, -1); - - /* -> [ ... ToObject(this) ToUint32(length) ] */ - return len; -} - -DUK_LOCAL duk_uint32_t duk__push_this_obj_len_u32_limited(duk_hthread *thr) { - /* Range limited to [0, 0x7fffffff] range, i.e. range that can be - * represented with duk_int32_t. Use this when the method doesn't - * handle the full 32-bit unsigned range correctly. - */ - duk_uint32_t ret = duk__push_this_obj_len_u32(thr); - if (DUK_UNLIKELY(ret >= 0x80000000UL)) { - DUK_ERROR_RANGE_INVALID_LENGTH(thr); - DUK_WO_NORETURN(return 0U;); - } - return ret; -} - -#if defined(DUK_USE_ARRAY_FASTPATH) -/* Check if 'this' binding is an Array instance (duk_harray) which satisfies - * a few other guarantees for fast path operation. The fast path doesn't - * need to handle all operations, even for duk_harrays, but must handle a - * significant fraction to improve performance. Return a non-NULL duk_harray - * pointer when all fast path criteria are met, NULL otherwise. - */ -DUK_LOCAL duk_harray *duk__arraypart_fastpath_this(duk_hthread *thr) { - duk_tval *tv; - duk_hobject *h; - duk_uint_t flags_mask, flags_bits, flags_value; - - DUK_ASSERT(thr->valstack_bottom > thr->valstack); /* because call in progress */ - tv = DUK_GET_THIS_TVAL_PTR(thr); - - /* Fast path requires that 'this' is a duk_harray. Read only arrays - * (ROM backed) are also rejected for simplicity. - */ - if (!DUK_TVAL_IS_OBJECT(tv)) { - DUK_DD(DUK_DDPRINT("reject array fast path: not an object")); - return NULL; - } - h = DUK_TVAL_GET_OBJECT(tv); - DUK_ASSERT(h != NULL); - flags_mask = DUK_HOBJECT_FLAG_ARRAY_PART | DUK_HOBJECT_FLAG_EXOTIC_ARRAY | DUK_HEAPHDR_FLAG_READONLY; - flags_bits = DUK_HOBJECT_FLAG_ARRAY_PART | DUK_HOBJECT_FLAG_EXOTIC_ARRAY; - flags_value = DUK_HEAPHDR_GET_FLAGS_RAW((duk_heaphdr *) h); - if ((flags_value & flags_mask) != flags_bits) { - DUK_DD(DUK_DDPRINT("reject array fast path: object flag check failed")); - return NULL; - } - - /* In some cases a duk_harray's 'length' may be larger than the - * current array part allocation. Avoid the fast path in these - * cases, so that all fast path code can safely assume that all - * items in the range [0,length[ are backed by the current array - * part allocation. - */ - if (((duk_harray *) h)->length > DUK_HOBJECT_GET_ASIZE(h)) { - DUK_DD(DUK_DDPRINT("reject array fast path: length > array part size")); - return NULL; - } - - /* Guarantees for fast path. */ - DUK_ASSERT(h != NULL); - DUK_ASSERT(DUK_HOBJECT_GET_ASIZE(h) == 0 || DUK_HOBJECT_A_GET_BASE(thr->heap, h) != NULL); - DUK_ASSERT(((duk_harray *) h)->length <= DUK_HOBJECT_GET_ASIZE(h)); - - DUK_DD(DUK_DDPRINT("array fast path allowed for: %!O", (duk_heaphdr *) h)); - return (duk_harray *) h; -} -#endif /* DUK_USE_ARRAY_FASTPATH */ - -/* - * Constructor - */ - -DUK_INTERNAL duk_ret_t duk_bi_array_constructor(duk_hthread *thr) { - duk_idx_t nargs; - duk_harray *a; - duk_double_t d; - duk_uint32_t len; - duk_uint32_t len_prealloc; - - nargs = duk_get_top(thr); - - if (nargs == 1 && duk_is_number(thr, 0)) { - /* XXX: expensive check (also shared elsewhere - so add a shared internal API call?) */ - d = duk_get_number(thr, 0); - len = duk_to_uint32(thr, 0); - if (!duk_double_equals((duk_double_t) len, d)) { - DUK_DCERROR_RANGE_INVALID_LENGTH(thr); - } - - /* For small lengths create a dense preallocated array. - * For large arrays preallocate an initial part. - */ - len_prealloc = len < 64 ? len : 64; - a = duk_push_harray_with_size(thr, len_prealloc); - DUK_ASSERT(a != NULL); - DUK_ASSERT(!duk_is_bare_object(thr, -1)); - a->length = len; - return 1; - } - - duk_pack(thr, nargs); - return 1; -} - -/* - * isArray() - */ - -DUK_INTERNAL duk_ret_t duk_bi_array_constructor_is_array(duk_hthread *thr) { - DUK_ASSERT_TOP(thr, 1); - duk_push_boolean(thr, duk_js_isarray(DUK_GET_TVAL_POSIDX(thr, 0))); - return 1; -} - -/* - * toString() - */ - -DUK_INTERNAL duk_ret_t duk_bi_array_prototype_to_string(duk_hthread *thr) { - (void) duk_push_this_coercible_to_object(thr); - duk_get_prop_stridx_short(thr, -1, DUK_STRIDX_JOIN); - - /* [ ... this func ] */ - if (!duk_is_callable(thr, -1)) { - /* Fall back to the initial (original) Object.toString(). We don't - * currently have pointers to the built-in functions, only the top - * level global objects (like "Array") so this is now done in a bit - * of a hacky manner. It would be cleaner to push the (original) - * function and use duk_call_method(). - */ - - /* XXX: 'this' will be ToObject() coerced twice, which is incorrect - * but should have no visible side effects. - */ - DUK_DDD(DUK_DDDPRINT("this.join is not callable, fall back to (original) Object.toString")); - duk_set_top(thr, 0); - return duk_bi_object_prototype_to_string(thr); /* has access to 'this' binding */ - } - - /* [ ... this func ] */ - - duk_insert(thr, -2); - - /* [ ... func this ] */ - - DUK_DDD( - DUK_DDDPRINT("calling: func=%!iT, this=%!iT", (duk_tval *) duk_get_tval(thr, -2), (duk_tval *) duk_get_tval(thr, -1))); - duk_call_method(thr, 0); - - return 1; -} - -/* - * concat() - */ - -DUK_INTERNAL duk_ret_t duk_bi_array_prototype_concat(duk_hthread *thr) { - duk_idx_t i, n; - duk_uint32_t j, idx, len; - duk_hobject *h; - duk_size_t tmp_len; - - /* XXX: In ES2015 Array .length can be up to 2^53-1. The current - * implementation is limited to 2^32-1. - */ - - /* XXX: Fast path for array 'this' and array element. */ - - /* XXX: The insert here is a bit expensive if there are a lot of items. - * It could also be special cased in the outermost for loop quite easily - * (as the element is dup()'d anyway). - */ - - (void) duk_push_this_coercible_to_object(thr); - duk_insert(thr, 0); - n = duk_get_top(thr); - duk_push_array(thr); /* -> [ ToObject(this) item1 ... itemN arr ] */ - - /* NOTE: The Array special behaviors are NOT invoked by duk_xdef_prop_index() - * (which differs from the official algorithm). If no error is thrown, this - * doesn't matter as the length is updated at the end. However, if an error - * is thrown, the length will be unset. That shouldn't matter because the - * caller won't get a reference to the intermediate value. - */ - - idx = 0; - for (i = 0; i < n; i++) { - duk_bool_t spreadable; - duk_bool_t need_has_check; - - DUK_ASSERT_TOP(thr, n + 1); - - /* [ ToObject(this) item1 ... itemN arr ] */ - - h = duk_get_hobject(thr, i); - - if (h == NULL) { - spreadable = 0; - } else { -#if defined(DUK_USE_SYMBOL_BUILTIN) - duk_get_prop_stridx(thr, i, DUK_STRIDX_WELLKNOWN_SYMBOL_IS_CONCAT_SPREADABLE); - if (duk_is_undefined(thr, -1)) { - spreadable = duk_js_isarray_hobject(h); - } else { - spreadable = duk_to_boolean(thr, -1); - } - duk_pop_nodecref_unsafe(thr); -#else - spreadable = duk_js_isarray_hobject(h); -#endif - } - - if (!spreadable) { - duk_dup(thr, i); - duk_xdef_prop_index_wec(thr, -2, idx); - idx++; - if (DUK_UNLIKELY(idx == 0U)) { - /* Index after update is 0, and index written - * was 0xffffffffUL which is no longer a valid - * array index. - */ - goto fail_wrap; - } - continue; - } - - DUK_ASSERT(duk_is_object(thr, i)); - need_has_check = (DUK_HOBJECT_IS_PROXY(h) != 0); /* Always 0 w/o Proxy support. */ - - /* [ ToObject(this) item1 ... itemN arr ] */ - - tmp_len = duk_get_length(thr, i); - len = (duk_uint32_t) tmp_len; - if (DUK_UNLIKELY(tmp_len != (duk_size_t) len)) { - goto fail_wrap; - } - if (DUK_UNLIKELY(idx + len < idx)) { - /* Result length must be at most 0xffffffffUL to be - * a valid 32-bit array index. - */ - goto fail_wrap; - } - for (j = 0; j < len; j++) { - /* For a Proxy element, an explicit 'has' check is - * needed to allow the Proxy to present gaps. - */ - if (need_has_check) { - if (duk_has_prop_index(thr, i, j)) { - duk_get_prop_index(thr, i, j); - duk_xdef_prop_index_wec(thr, -2, idx); - } - } else { - if (duk_get_prop_index(thr, i, j)) { - duk_xdef_prop_index_wec(thr, -2, idx); - } else { - duk_pop_undefined(thr); - } - } - idx++; - DUK_ASSERT(idx != 0U); /* Wrap check above. */ - } - } - - /* ES5.1 has a specification "bug" in that nonexistent trailing - * elements don't affect the result .length. Test262 and other - * engines disagree, and the specification bug was fixed in ES2015 - * (see NOTE 1 in https://www.ecma-international.org/ecma-262/6.0/#sec-array.prototype.concat). - */ - duk_push_uarridx(thr, idx); - duk_xdef_prop_stridx_short(thr, -2, DUK_STRIDX_LENGTH, DUK_PROPDESC_FLAGS_W); - - DUK_ASSERT_TOP(thr, n + 1); - return 1; - -fail_wrap: - DUK_ERROR_RANGE_INVALID_LENGTH(thr); - DUK_WO_NORETURN(return 0;); -} - -/* - * join(), toLocaleString() - * - * Note: checking valstack is necessary, but only in the per-element loop. - * - * Note: the trivial approach of pushing all the elements on the value stack - * and then calling duk_join() fails when the array contains a large number - * of elements. This problem can't be offloaded to duk_join() because the - * elements to join must be handled here and have special handling. Current - * approach is to do intermediate joins with very large number of elements. - * There is no fancy handling; the prefix gets re-joined multiple times. - */ - -DUK_INTERNAL duk_ret_t duk_bi_array_prototype_join_shared(duk_hthread *thr) { - duk_uint32_t len, count; - duk_uint32_t idx; - duk_small_int_t to_locale_string = duk_get_current_magic(thr); - duk_idx_t valstack_required; - - /* For join(), nargs is 1. For toLocaleString(), nargs is 0 and - * setting the top essentially pushes an undefined to the stack, - * thus defaulting to a comma separator. - */ - duk_set_top(thr, 1); - if (duk_is_undefined(thr, 0)) { - duk_pop_undefined(thr); - duk_push_hstring_stridx(thr, DUK_STRIDX_COMMA); - } else { - duk_to_string(thr, 0); - } - - len = duk__push_this_obj_len_u32(thr); - - /* [ sep ToObject(this) len ] */ - - DUK_DDD(DUK_DDDPRINT("sep=%!T, this=%!T, len=%lu", - (duk_tval *) duk_get_tval(thr, 0), - (duk_tval *) duk_get_tval(thr, 1), - (unsigned long) len)); - - /* The extra (+4) is tight. */ - valstack_required = (duk_idx_t) ((len >= DUK__ARRAY_MID_JOIN_LIMIT ? DUK__ARRAY_MID_JOIN_LIMIT : len) + 4); - duk_require_stack(thr, valstack_required); - - duk_dup_0(thr); - - /* [ sep ToObject(this) len sep ] */ - - count = 0; - idx = 0; - for (;;) { - DUK_DDD(DUK_DDDPRINT("join idx=%ld", (long) idx)); - if (count >= DUK__ARRAY_MID_JOIN_LIMIT || /* intermediate join to avoid valstack overflow */ - idx >= len) { /* end of loop (careful with len==0) */ - /* [ sep ToObject(this) len sep str0 ... str(count-1) ] */ - DUK_DDD(DUK_DDDPRINT("mid/final join, count=%ld, idx=%ld, len=%ld", (long) count, (long) idx, (long) len)); - duk_join(thr, (duk_idx_t) count); /* -> [ sep ToObject(this) len str ] */ - duk_dup_0(thr); /* -> [ sep ToObject(this) len str sep ] */ - duk_insert(thr, -2); /* -> [ sep ToObject(this) len sep str ] */ - count = 1; - } - if (idx >= len) { - /* if true, the stack already contains the final result */ - break; - } - - duk_get_prop_index(thr, 1, (duk_uarridx_t) idx); - if (duk_is_null_or_undefined(thr, -1)) { - duk_pop_nodecref_unsafe(thr); - duk_push_hstring_empty(thr); - } else { - if (to_locale_string) { - duk_to_object(thr, -1); - duk_get_prop_stridx_short(thr, -1, DUK_STRIDX_TO_LOCALE_STRING); - duk_insert(thr, -2); /* -> [ ... toLocaleString ToObject(val) ] */ - duk_call_method(thr, 0); - } - duk_to_string(thr, -1); - } - - count++; - idx++; - } - - /* [ sep ToObject(this) len sep result ] */ - - return 1; -} - -/* - * pop(), push() - */ - -#if defined(DUK_USE_ARRAY_FASTPATH) -DUK_LOCAL duk_ret_t duk__array_pop_fastpath(duk_hthread *thr, duk_harray *h_arr) { - duk_tval *tv_arraypart; - duk_tval *tv_val; - duk_uint32_t len; - - tv_arraypart = DUK_HOBJECT_A_GET_BASE(thr->heap, (duk_hobject *) h_arr); - len = h_arr->length; - if (len <= 0) { - /* nop, return undefined */ - return 0; - } - - len--; - h_arr->length = len; - - /* Fast path doesn't check for an index property inherited from - * Array.prototype. This is quite often acceptable; if not, - * disable fast path. - */ - DUK_ASSERT_VS_SPACE(thr); - tv_val = tv_arraypart + len; - if (DUK_TVAL_IS_UNUSED(tv_val)) { - /* No net refcount change. Value stack already has - * 'undefined' based on value stack init policy. - */ - DUK_ASSERT(DUK_TVAL_IS_UNDEFINED(thr->valstack_top)); - DUK_ASSERT(DUK_TVAL_IS_UNUSED(tv_val)); - } else { - /* No net refcount change. */ - DUK_TVAL_SET_TVAL(thr->valstack_top, tv_val); - DUK_TVAL_SET_UNUSED(tv_val); - } - thr->valstack_top++; - - /* XXX: there's no shrink check in the fast path now */ - - return 1; -} -#endif /* DUK_USE_ARRAY_FASTPATH */ - -DUK_INTERNAL duk_ret_t duk_bi_array_prototype_pop(duk_hthread *thr) { - duk_uint32_t len; - duk_uint32_t idx; -#if defined(DUK_USE_ARRAY_FASTPATH) - duk_harray *h_arr; -#endif - - DUK_ASSERT_TOP(thr, 0); - -#if defined(DUK_USE_ARRAY_FASTPATH) - h_arr = duk__arraypart_fastpath_this(thr); - if (h_arr) { - return duk__array_pop_fastpath(thr, h_arr); - } -#endif - - /* XXX: Merge fastpath check into a related call (push this, coerce length, etc)? */ - - len = duk__push_this_obj_len_u32(thr); - if (len == 0) { - duk_push_int(thr, 0); - duk_put_prop_stridx_short(thr, 0, DUK_STRIDX_LENGTH); - return 0; - } - idx = len - 1; - - duk_get_prop_index(thr, 0, (duk_uarridx_t) idx); - duk_del_prop_index(thr, 0, (duk_uarridx_t) idx); - duk_push_u32(thr, idx); - duk_put_prop_stridx_short(thr, 0, DUK_STRIDX_LENGTH); - return 1; -} - -#if defined(DUK_USE_ARRAY_FASTPATH) -DUK_LOCAL duk_ret_t duk__array_push_fastpath(duk_hthread *thr, duk_harray *h_arr) { - duk_tval *tv_arraypart; - duk_tval *tv_src; - duk_tval *tv_dst; - duk_uint32_t len; - duk_idx_t i, n; - - len = h_arr->length; - tv_arraypart = DUK_HOBJECT_A_GET_BASE(thr->heap, (duk_hobject *) h_arr); - - n = (duk_idx_t) (thr->valstack_top - thr->valstack_bottom); - DUK_ASSERT(n >= 0); - DUK_ASSERT((duk_uint32_t) n <= DUK_UINT32_MAX); - if (DUK_UNLIKELY(len + (duk_uint32_t) n < len)) { - DUK_D(DUK_DPRINT("Array.prototype.push() would go beyond 32-bit length, throw")); - DUK_DCERROR_RANGE_INVALID_LENGTH(thr); /* != 0 return value returned as is by caller */ - } - if (len + (duk_uint32_t) n > DUK_HOBJECT_GET_ASIZE((duk_hobject *) h_arr)) { - /* Array part would need to be extended. Rely on slow path - * for now. - * - * XXX: Rework hobject code a bit and add extend support. - */ - return 0; - } - - tv_src = thr->valstack_bottom; - tv_dst = tv_arraypart + len; - for (i = 0; i < n; i++) { - /* No net refcount change; reset value stack values to - * undefined to satisfy value stack init policy. - */ - DUK_TVAL_SET_TVAL(tv_dst, tv_src); - DUK_TVAL_SET_UNDEFINED(tv_src); - tv_src++; - tv_dst++; - } - thr->valstack_top = thr->valstack_bottom; - len += (duk_uint32_t) n; - h_arr->length = len; - - DUK_ASSERT((duk_uint_t) len == len); - duk_push_uint(thr, (duk_uint_t) len); - return 1; -} -#endif /* DUK_USE_ARRAY_FASTPATH */ - -DUK_INTERNAL duk_ret_t duk_bi_array_prototype_push(duk_hthread *thr) { - /* Note: 'this' is not necessarily an Array object. The push() - * algorithm is supposed to work for other kinds of objects too, - * so the algorithm has e.g. an explicit update for the 'length' - * property which is normally "magical" in arrays. - */ - - duk_uint32_t len; - duk_idx_t i, n; -#if defined(DUK_USE_ARRAY_FASTPATH) - duk_harray *h_arr; -#endif - -#if defined(DUK_USE_ARRAY_FASTPATH) - h_arr = duk__arraypart_fastpath_this(thr); - if (h_arr) { - duk_ret_t rc; - rc = duk__array_push_fastpath(thr, h_arr); - if (rc != 0) { - return rc; - } - DUK_DD(DUK_DDPRINT("array push() fast path exited, resize case")); - } -#endif - - n = duk_get_top(thr); - len = duk__push_this_obj_len_u32(thr); - - /* [ arg1 ... argN obj length ] */ - - /* Technically Array.prototype.push() can create an Array with length - * longer than 2^32-1, i.e. outside the 32-bit range. The final length - * is *not* wrapped to 32 bits in the specification. - * - * This implementation tracks length with a uint32 because it's much - * more practical. - * - * See: test-bi-array-push-maxlen.js. - */ - - if (len + (duk_uint32_t) n < len) { - DUK_D(DUK_DPRINT("Array.prototype.push() would go beyond 32-bit length, throw")); - DUK_DCERROR_RANGE_INVALID_LENGTH(thr); - } - - for (i = 0; i < n; i++) { - duk_dup(thr, i); - duk_put_prop_index(thr, -3, (duk_uarridx_t) (len + (duk_uint32_t) i)); - } - len += (duk_uint32_t) n; - - duk_push_u32(thr, len); - duk_dup_top(thr); - duk_put_prop_stridx_short(thr, -4, DUK_STRIDX_LENGTH); - - /* [ arg1 ... argN obj length new_length ] */ - return 1; -} - -/* - * sort() - * - * Currently qsort with random pivot. This is now really, really slow, - * because there is no fast path for array parts. - * - * Signed indices are used because qsort() leaves and degenerate cases - * may use a negative offset. - */ - -DUK_LOCAL duk_small_int_t duk__array_sort_compare(duk_hthread *thr, duk_int_t idx1, duk_int_t idx2) { - duk_bool_t have1, have2; - duk_bool_t undef1, undef2; - duk_small_int_t ret; - duk_idx_t idx_obj = 1; /* fixed offsets in valstack */ - duk_idx_t idx_fn = 0; - duk_hstring *h1, *h2; - - /* Fast exit if indices are identical. This is valid for a non-existent property, - * for an undefined value, and almost always for ToString() coerced comparison of - * arbitrary values (corner cases where this is not the case include e.g. a an - * object with varying ToString() coercion). - * - * The specification does not prohibit "caching" of values read from the array, so - * assuming equality for comparing an index with itself falls into the category of - * "caching". - * - * Also, compareFn may be inconsistent, so skipping a call to compareFn here may - * have an effect on the final result. The specification does not require any - * specific behavior for inconsistent compare functions, so again, this fast path - * is OK. - */ - - if (idx1 == idx2) { - DUK_DDD(DUK_DDDPRINT("duk__array_sort_compare: idx1=%ld, idx2=%ld -> indices identical, quick exit", - (long) idx1, - (long) idx2)); - return 0; - } - - have1 = duk_get_prop_index(thr, idx_obj, (duk_uarridx_t) idx1); - have2 = duk_get_prop_index(thr, idx_obj, (duk_uarridx_t) idx2); - - DUK_DDD(DUK_DDDPRINT("duk__array_sort_compare: idx1=%ld, idx2=%ld, have1=%ld, have2=%ld, val1=%!T, val2=%!T", - (long) idx1, - (long) idx2, - (long) have1, - (long) have2, - (duk_tval *) duk_get_tval(thr, -2), - (duk_tval *) duk_get_tval(thr, -1))); - - if (have1) { - if (have2) { - ; - } else { - ret = -1; - goto pop_ret; - } - } else { - if (have2) { - ret = 1; - goto pop_ret; - } else { - ret = 0; - goto pop_ret; - } - } - - undef1 = duk_is_undefined(thr, -2); - undef2 = duk_is_undefined(thr, -1); - if (undef1) { - if (undef2) { - ret = 0; - goto pop_ret; - } else { - ret = 1; - goto pop_ret; - } - } else { - if (undef2) { - ret = -1; - goto pop_ret; - } else { - ; - } - } - - if (!duk_is_undefined(thr, idx_fn)) { - duk_double_t d; - - /* No need to check callable; duk_call() will do that. */ - duk_dup(thr, idx_fn); /* -> [ ... x y fn ] */ - duk_insert(thr, -3); /* -> [ ... fn x y ] */ - duk_call(thr, 2); /* -> [ ... res ] */ - - /* ES5 is a bit vague about what to do if the return value is - * not a number. ES2015 provides a concrete description: - * http://www.ecma-international.org/ecma-262/6.0/#sec-sortcompare. - */ - - d = duk_to_number_m1(thr); - if (d < 0.0) { - ret = -1; - } else if (d > 0.0) { - ret = 1; - } else { - /* Because NaN compares to false, NaN is handled here - * without an explicit check above. - */ - ret = 0; - } - - duk_pop_nodecref_unsafe(thr); - DUK_DDD(DUK_DDDPRINT("-> result %ld (from comparefn, after coercion)", (long) ret)); - return ret; - } - - /* string compare is the default (a bit oddly) */ - - /* XXX: any special handling for plain array; causes repeated coercion now? */ - h1 = duk_to_hstring(thr, -2); - h2 = duk_to_hstring_m1(thr); - DUK_ASSERT(h1 != NULL); - DUK_ASSERT(h2 != NULL); - - ret = duk_js_string_compare(h1, h2); /* retval is directly usable */ - goto pop_ret; - -pop_ret: - duk_pop_2_unsafe(thr); - DUK_DDD(DUK_DDDPRINT("-> result %ld", (long) ret)); - return ret; -} - -DUK_LOCAL void duk__array_sort_swap(duk_hthread *thr, duk_int_t l, duk_int_t r) { - duk_bool_t have_l, have_r; - duk_idx_t idx_obj = 1; /* fixed offset in valstack */ - - if (l == r) { - return; - } - - /* swap elements; deal with non-existent elements correctly */ - have_l = duk_get_prop_index(thr, idx_obj, (duk_uarridx_t) l); - have_r = duk_get_prop_index(thr, idx_obj, (duk_uarridx_t) r); - - if (have_r) { - /* right exists, [[Put]] regardless whether or not left exists */ - duk_put_prop_index(thr, idx_obj, (duk_uarridx_t) l); - } else { - duk_del_prop_index(thr, idx_obj, (duk_uarridx_t) l); - duk_pop_undefined(thr); - } - - if (have_l) { - duk_put_prop_index(thr, idx_obj, (duk_uarridx_t) r); - } else { - duk_del_prop_index(thr, idx_obj, (duk_uarridx_t) r); - duk_pop_undefined(thr); - } -} - -#if defined(DUK_USE_DEBUG_LEVEL) && (DUK_USE_DEBUG_LEVEL >= 2) -/* Debug print which visualizes the qsort partitioning process. */ -DUK_LOCAL void duk__debuglog_qsort_state(duk_hthread *thr, duk_int_t lo, duk_int_t hi, duk_int_t pivot) { - char buf[4096]; - char *ptr = buf; - duk_int_t i, n; - n = (duk_int_t) duk_get_length(thr, 1); - if (n > 4000) { - n = 4000; - } - *ptr++ = '['; - for (i = 0; i < n; i++) { - if (i == pivot) { - *ptr++ = '|'; - } else if (i == lo) { - *ptr++ = '<'; - } else if (i == hi) { - *ptr++ = '>'; - } else if (i >= lo && i <= hi) { - *ptr++ = '-'; - } else { - *ptr++ = ' '; - } - } - *ptr++ = ']'; - *ptr++ = '\0'; - - DUK_DDD(DUK_DDDPRINT("%s (lo=%ld, hi=%ld, pivot=%ld)", (const char *) buf, (long) lo, (long) hi, (long) pivot)); -} -#endif - -DUK_LOCAL void duk__array_qsort(duk_hthread *thr, duk_int_t lo, duk_int_t hi) { - duk_int_t p, l, r; - - /* The lo/hi indices may be crossed and hi < 0 is possible at entry. */ - - DUK_DDD(DUK_DDDPRINT("duk__array_qsort: lo=%ld, hi=%ld, obj=%!T", (long) lo, (long) hi, (duk_tval *) duk_get_tval(thr, 1))); - - DUK_ASSERT_TOP(thr, 3); - - /* In some cases it may be that lo > hi, or hi < 0; these - * degenerate cases happen e.g. for empty arrays, and in - * recursion leaves. - */ - - /* trivial cases */ - if (hi - lo < 1) { - DUK_DDD(DUK_DDDPRINT("degenerate case, return immediately")); - return; - } - DUK_ASSERT(hi > lo); - DUK_ASSERT(hi - lo + 1 >= 2); - - /* randomized pivot selection */ - p = lo + (duk_int_t) (duk_util_get_random_double(thr) * (duk_double_t) (hi - lo + 1)); - DUK_ASSERT(p >= lo && p <= hi); - DUK_DDD(DUK_DDDPRINT("lo=%ld, hi=%ld, chose pivot p=%ld", (long) lo, (long) hi, (long) p)); - - /* move pivot out of the way */ - duk__array_sort_swap(thr, p, lo); - p = lo; - DUK_DDD(DUK_DDDPRINT("pivot moved out of the way: %!T", (duk_tval *) duk_get_tval(thr, 1))); - - l = lo + 1; - r = hi; - for (;;) { - /* find elements to swap */ - for (;;) { - DUK_DDD(DUK_DDDPRINT("left scan: l=%ld, r=%ld, p=%ld", (long) l, (long) r, (long) p)); - if (l >= hi) { - break; - } - if (duk__array_sort_compare(thr, l, p) >= 0) { /* !(l < p) */ - break; - } - l++; - } - for (;;) { - DUK_DDD(DUK_DDDPRINT("right scan: l=%ld, r=%ld, p=%ld", (long) l, (long) r, (long) p)); - if (r <= lo) { - break; - } - if (duk__array_sort_compare(thr, p, r) >= 0) { /* !(p < r) */ - break; - } - r--; - } - if (l >= r) { - goto done; - } - DUK_ASSERT(l < r); - - DUK_DDD(DUK_DDDPRINT("swap %ld and %ld", (long) l, (long) r)); - - duk__array_sort_swap(thr, l, r); - - DUK_DDD(DUK_DDDPRINT("after swap: %!T", (duk_tval *) duk_get_tval(thr, 1))); - l++; - r--; - } -done: - /* Note that 'l' and 'r' may cross, i.e. r < l */ - DUK_ASSERT(l >= lo && l <= hi); - DUK_ASSERT(r >= lo && r <= hi); - - /* XXX: there's no explicit recursion bound here now. For the average - * qsort recursion depth O(log n) that's not really necessary: e.g. for - * 2**32 recursion depth would be about 32 which is OK. However, qsort - * worst case recursion depth is O(n) which may be a problem. - */ - - /* move pivot to its final place */ - DUK_DDD(DUK_DDDPRINT("before final pivot swap: %!T", (duk_tval *) duk_get_tval(thr, 1))); - duk__array_sort_swap(thr, lo, r); - -#if defined(DUK_USE_DEBUG_LEVEL) && (DUK_USE_DEBUG_LEVEL >= 2) - duk__debuglog_qsort_state(thr, lo, hi, r); -#endif - - DUK_DDD(DUK_DDDPRINT("recurse: pivot=%ld, obj=%!T", (long) r, (duk_tval *) duk_get_tval(thr, 1))); - duk__array_qsort(thr, lo, r - 1); - duk__array_qsort(thr, r + 1, hi); -} - -DUK_INTERNAL duk_ret_t duk_bi_array_prototype_sort(duk_hthread *thr) { - duk_uint32_t len; - - /* XXX: len >= 0x80000000 won't work below because a signed type - * is needed by qsort. - */ - len = duk__push_this_obj_len_u32_limited(thr); - - /* stack[0] = compareFn - * stack[1] = ToObject(this) - * stack[2] = ToUint32(length) - */ - - if (len > 0) { - /* avoid degenerate cases, so that (len - 1) won't underflow */ - duk__array_qsort(thr, (duk_int_t) 0, (duk_int_t) (len - 1)); - } - - DUK_ASSERT_TOP(thr, 3); - duk_pop_nodecref_unsafe(thr); - return 1; /* return ToObject(this) */ -} - -/* - * splice() - */ - -/* XXX: this compiles to over 500 bytes now, even without special handling - * for an array part. Uses signed ints so does not handle full array range correctly. - */ - -/* XXX: can shift() / unshift() use the same helper? - * shift() is (close to?) <--> splice(0, 1) - * unshift is (close to?) <--> splice(0, 0, [items])? - */ - -DUK_INTERNAL duk_ret_t duk_bi_array_prototype_splice(duk_hthread *thr) { - duk_idx_t nargs; - duk_uint32_t len_u32; - duk_int_t len; - duk_bool_t have_delcount; - duk_int_t item_count; - duk_int_t act_start; - duk_int_t del_count; - duk_int_t i, n; - - DUK_UNREF(have_delcount); - - nargs = duk_get_top(thr); - if (nargs < 2) { - duk_set_top(thr, 2); - nargs = 2; - have_delcount = 0; - } else { - have_delcount = 1; - } - - /* XXX: len >= 0x80000000 won't work below because we need to be - * able to represent -len. - */ - len_u32 = duk__push_this_obj_len_u32_limited(thr); - len = (duk_int_t) len_u32; - DUK_ASSERT(len >= 0); - - act_start = duk_to_int_clamped(thr, 0, -len, len); - if (act_start < 0) { - act_start = len + act_start; - } - DUK_ASSERT(act_start >= 0 && act_start <= len); - -#if defined(DUK_USE_NONSTD_ARRAY_SPLICE_DELCOUNT) - if (have_delcount) { -#endif - del_count = duk_to_int_clamped(thr, 1, 0, len - act_start); -#if defined(DUK_USE_NONSTD_ARRAY_SPLICE_DELCOUNT) - } else { - /* E5.1 standard behavior when deleteCount is not given would be - * to treat it just like if 'undefined' was given, which coerces - * ultimately to 0. Real world behavior is to splice to the end - * of array, see test-bi-array-proto-splice-no-delcount.js. - */ - del_count = len - act_start; - } -#endif - - DUK_ASSERT(nargs >= 2); - item_count = (duk_int_t) (nargs - 2); - - DUK_ASSERT(del_count >= 0 && del_count <= len - act_start); - DUK_ASSERT(del_count + act_start <= len); - - /* For now, restrict result array into 32-bit length range. */ - if (((duk_double_t) len) - ((duk_double_t) del_count) + ((duk_double_t) item_count) > (duk_double_t) DUK_UINT32_MAX) { - DUK_D(DUK_DPRINT("Array.prototype.splice() would go beyond 32-bit length, throw")); - DUK_DCERROR_RANGE_INVALID_LENGTH(thr); - } - - duk_push_array(thr); - - /* stack[0] = start - * stack[1] = deleteCount - * stack[2...nargs-1] = items - * stack[nargs] = ToObject(this) -3 - * stack[nargs+1] = ToUint32(length) -2 - * stack[nargs+2] = result array -1 - */ - - DUK_ASSERT_TOP(thr, nargs + 3); - - /* Step 9: copy elements-to-be-deleted into the result array */ - - for (i = 0; i < del_count; i++) { - if (duk_get_prop_index(thr, -3, (duk_uarridx_t) (act_start + i))) { - duk_xdef_prop_index_wec(thr, -2, (duk_uarridx_t) i); /* throw flag irrelevant (false in std alg) */ - } else { - duk_pop_undefined(thr); - } - } - duk_push_u32(thr, (duk_uint32_t) del_count); - duk_xdef_prop_stridx_short(thr, -2, DUK_STRIDX_LENGTH, DUK_PROPDESC_FLAGS_W); - - /* Steps 12 and 13: reorganize elements to make room for itemCount elements */ - - if (item_count < del_count) { - /* [ A B C D E F G H ] rel_index = 2, del_count 3, item count 1 - * -> [ A B F G H ] (conceptual intermediate step) - * -> [ A B . F G H ] (placeholder marked) - * [ A B C F G H ] (actual result at this point, C will be replaced) - */ - - DUK_ASSERT_TOP(thr, nargs + 3); - - n = len - del_count; - for (i = act_start; i < n; i++) { - if (duk_get_prop_index(thr, -3, (duk_uarridx_t) (i + del_count))) { - duk_put_prop_index(thr, -4, (duk_uarridx_t) (i + item_count)); - } else { - duk_pop_undefined(thr); - duk_del_prop_index(thr, -3, (duk_uarridx_t) (i + item_count)); - } - } - - DUK_ASSERT_TOP(thr, nargs + 3); - - /* loop iterator init and limit changed from standard algorithm */ - n = len - del_count + item_count; - for (i = len - 1; i >= n; i--) { - duk_del_prop_index(thr, -3, (duk_uarridx_t) i); - } - - DUK_ASSERT_TOP(thr, nargs + 3); - } else if (item_count > del_count) { - /* [ A B C D E F G H ] rel_index = 2, del_count 3, item count 4 - * -> [ A B F G H ] (conceptual intermediate step) - * -> [ A B . . . . F G H ] (placeholder marked) - * [ A B C D E F F G H ] (actual result at this point) - */ - - DUK_ASSERT_TOP(thr, nargs + 3); - - /* loop iterator init and limit changed from standard algorithm */ - for (i = len - del_count - 1; i >= act_start; i--) { - if (duk_get_prop_index(thr, -3, (duk_uarridx_t) (i + del_count))) { - duk_put_prop_index(thr, -4, (duk_uarridx_t) (i + item_count)); - } else { - duk_pop_undefined(thr); - duk_del_prop_index(thr, -3, (duk_uarridx_t) (i + item_count)); - } - } - - DUK_ASSERT_TOP(thr, nargs + 3); - } else { - /* [ A B C D E F G H ] rel_index = 2, del_count 3, item count 3 - * -> [ A B F G H ] (conceptual intermediate step) - * -> [ A B . . . F G H ] (placeholder marked) - * [ A B C D E F G H ] (actual result at this point) - */ - } - DUK_ASSERT_TOP(thr, nargs + 3); - - /* Step 15: insert itemCount elements into the hole made above */ - - for (i = 0; i < item_count; i++) { - duk_dup(thr, i + 2); /* args start at index 2 */ - duk_put_prop_index(thr, -4, (duk_uarridx_t) (act_start + i)); - } - - /* Step 16: update length; note that the final length may be above 32 bit range - * (but we checked above that this isn't the case here) - */ - - duk_push_u32(thr, (duk_uint32_t) (len - del_count + item_count)); - duk_put_prop_stridx_short(thr, -4, DUK_STRIDX_LENGTH); - - /* result array is already at the top of stack */ - DUK_ASSERT_TOP(thr, nargs + 3); - return 1; -} - -/* - * reverse() - */ - -DUK_INTERNAL duk_ret_t duk_bi_array_prototype_reverse(duk_hthread *thr) { - duk_uint32_t len; - duk_uint32_t middle; - duk_uint32_t lower, upper; - duk_bool_t have_lower, have_upper; - - len = duk__push_this_obj_len_u32(thr); - middle = len / 2; - - /* If len <= 1, middle will be 0 and for-loop bails out - * immediately (0 < 0 -> false). - */ - - for (lower = 0; lower < middle; lower++) { - DUK_ASSERT(len >= 2); - DUK_ASSERT_TOP(thr, 2); - - DUK_ASSERT(len >= lower + 1); - upper = len - lower - 1; - - have_lower = duk_get_prop_index(thr, -2, (duk_uarridx_t) lower); - have_upper = duk_get_prop_index(thr, -3, (duk_uarridx_t) upper); - - /* [ ToObject(this) ToUint32(length) lowerValue upperValue ] */ - - if (have_upper) { - duk_put_prop_index(thr, -4, (duk_uarridx_t) lower); - } else { - duk_del_prop_index(thr, -4, (duk_uarridx_t) lower); - duk_pop_undefined(thr); - } - - if (have_lower) { - duk_put_prop_index(thr, -3, (duk_uarridx_t) upper); - } else { - duk_del_prop_index(thr, -3, (duk_uarridx_t) upper); - duk_pop_undefined(thr); - } - - DUK_ASSERT_TOP(thr, 2); - } - - DUK_ASSERT_TOP(thr, 2); - duk_pop_unsafe(thr); /* -> [ ToObject(this) ] */ - return 1; -} - -/* - * slice() - */ - -DUK_INTERNAL duk_ret_t duk_bi_array_prototype_slice(duk_hthread *thr) { - duk_uint32_t len_u32; - duk_int_t len; - duk_int_t start, end; - duk_int_t i; - duk_uarridx_t idx; - duk_uint32_t res_length = 0; - - /* XXX: len >= 0x80000000 won't work below because we need to be - * able to represent -len. - */ - len_u32 = duk__push_this_obj_len_u32_limited(thr); - len = (duk_int_t) len_u32; - DUK_ASSERT(len >= 0); - - duk_push_array(thr); - - /* stack[0] = start - * stack[1] = end - * stack[2] = ToObject(this) - * stack[3] = ToUint32(length) - * stack[4] = result array - */ - - start = duk_to_int_clamped(thr, 0, -len, len); - if (start < 0) { - start = len + start; - } - /* XXX: could duk_is_undefined() provide defaulting undefined to 'len' - * (the upper limit)? - */ - if (duk_is_undefined(thr, 1)) { - end = len; - } else { - end = duk_to_int_clamped(thr, 1, -len, len); - if (end < 0) { - end = len + end; - } - } - DUK_ASSERT(start >= 0 && start <= len); - DUK_ASSERT(end >= 0 && end <= len); - - idx = 0; - for (i = start; i < end; i++) { - DUK_ASSERT_TOP(thr, 5); - if (duk_get_prop_index(thr, 2, (duk_uarridx_t) i)) { - duk_xdef_prop_index_wec(thr, 4, idx); - res_length = idx + 1; - } else { - duk_pop_undefined(thr); - } - idx++; - DUK_ASSERT_TOP(thr, 5); - } - - duk_push_u32(thr, res_length); - duk_xdef_prop_stridx_short(thr, 4, DUK_STRIDX_LENGTH, DUK_PROPDESC_FLAGS_W); - - DUK_ASSERT_TOP(thr, 5); - return 1; -} - -/* - * shift() - */ - -DUK_INTERNAL duk_ret_t duk_bi_array_prototype_shift(duk_hthread *thr) { - duk_uint32_t len; - duk_uint32_t i; - - len = duk__push_this_obj_len_u32(thr); - if (len == 0) { - duk_push_int(thr, 0); - duk_put_prop_stridx_short(thr, 0, DUK_STRIDX_LENGTH); - return 0; - } - - duk_get_prop_index(thr, 0, 0); - - /* stack[0] = object (this) - * stack[1] = ToUint32(length) - * stack[2] = elem at index 0 (retval) - */ - - for (i = 1; i < len; i++) { - DUK_ASSERT_TOP(thr, 3); - if (duk_get_prop_index(thr, 0, (duk_uarridx_t) i)) { - /* fromPresent = true */ - duk_put_prop_index(thr, 0, (duk_uarridx_t) (i - 1)); - } else { - /* fromPresent = false */ - duk_del_prop_index(thr, 0, (duk_uarridx_t) (i - 1)); - duk_pop_undefined(thr); - } - } - duk_del_prop_index(thr, 0, (duk_uarridx_t) (len - 1)); - - duk_push_u32(thr, (duk_uint32_t) (len - 1)); - duk_put_prop_stridx_short(thr, 0, DUK_STRIDX_LENGTH); - - DUK_ASSERT_TOP(thr, 3); - return 1; -} - -/* - * unshift() - */ - -DUK_INTERNAL duk_ret_t duk_bi_array_prototype_unshift(duk_hthread *thr) { - duk_idx_t nargs; - duk_uint32_t len; - duk_uint32_t i; - - nargs = duk_get_top(thr); - len = duk__push_this_obj_len_u32(thr); - - /* stack[0...nargs-1] = unshift args (vararg) - * stack[nargs] = ToObject(this) - * stack[nargs+1] = ToUint32(length) - */ - - DUK_ASSERT_TOP(thr, nargs + 2); - - /* Note: unshift() may operate on indices above unsigned 32-bit range - * and the final length may be >= 2**32. However, we restrict the - * final result to 32-bit range for practicality. - */ - - if (len + (duk_uint32_t) nargs < len) { - DUK_D(DUK_DPRINT("Array.prototype.unshift() would go beyond 32-bit length, throw")); - DUK_DCERROR_RANGE_INVALID_LENGTH(thr); - } - - i = len; - while (i > 0) { - DUK_ASSERT_TOP(thr, nargs + 2); - i--; - /* k+argCount-1; note that may be above 32-bit range */ - - if (duk_get_prop_index(thr, -2, (duk_uarridx_t) i)) { - /* fromPresent = true */ - /* [ ... ToObject(this) ToUint32(length) val ] */ - duk_put_prop_index( - thr, - -3, - (duk_uarridx_t) (i + (duk_uint32_t) nargs)); /* -> [ ... ToObject(this) ToUint32(length) ] */ - } else { - /* fromPresent = false */ - /* [ ... ToObject(this) ToUint32(length) val ] */ - duk_pop_undefined(thr); - duk_del_prop_index( - thr, - -2, - (duk_uarridx_t) (i + (duk_uint32_t) nargs)); /* -> [ ... ToObject(this) ToUint32(length) ] */ - } - DUK_ASSERT_TOP(thr, nargs + 2); - } - - for (i = 0; i < (duk_uint32_t) nargs; i++) { - DUK_ASSERT_TOP(thr, nargs + 2); - duk_dup(thr, (duk_idx_t) i); /* -> [ ... ToObject(this) ToUint32(length) arg[i] ] */ - duk_put_prop_index(thr, -3, (duk_uarridx_t) i); - DUK_ASSERT_TOP(thr, nargs + 2); - } - - DUK_ASSERT_TOP(thr, nargs + 2); - duk_push_u32(thr, len + (duk_uint32_t) nargs); - duk_dup_top(thr); /* -> [ ... ToObject(this) ToUint32(length) final_len final_len ] */ - duk_put_prop_stridx_short(thr, -4, DUK_STRIDX_LENGTH); - return 1; -} - -/* - * indexOf(), lastIndexOf() - */ - -DUK_INTERNAL duk_ret_t duk_bi_array_prototype_indexof_shared(duk_hthread *thr) { - duk_idx_t nargs; - duk_int_t i, len; - duk_int_t from_idx; - duk_small_int_t idx_step = duk_get_current_magic(thr); /* idx_step is +1 for indexOf, -1 for lastIndexOf */ - - /* lastIndexOf() needs to be a vararg function because we must distinguish - * between an undefined fromIndex and a "not given" fromIndex; indexOf() is - * made vararg for symmetry although it doesn't strictly need to be. - */ - - nargs = duk_get_top(thr); - duk_set_top(thr, 2); - - /* XXX: must be able to represent -len */ - len = (duk_int_t) duk__push_this_obj_len_u32_limited(thr); - if (len == 0) { - goto not_found; - } - - /* Index clamping is a bit tricky, we must ensure that we'll only iterate - * through elements that exist and that the specific requirements from E5.1 - * Sections 15.4.4.14 and 15.4.4.15 are fulfilled; especially: - * - * - indexOf: clamp to [-len,len], negative handling -> [0,len], - * if clamped result is len, for-loop bails out immediately - * - * - lastIndexOf: clamp to [-len-1, len-1], negative handling -> [-1, len-1], - * if clamped result is -1, for-loop bails out immediately - * - * If fromIndex is not given, ToInteger(undefined) = 0, which is correct - * for indexOf() but incorrect for lastIndexOf(). Hence special handling, - * and why lastIndexOf() needs to be a vararg function. - */ - - if (nargs >= 2) { - /* indexOf: clamp fromIndex to [-len, len] - * (if fromIndex == len, for-loop terminates directly) - * - * lastIndexOf: clamp fromIndex to [-len - 1, len - 1] - * (if clamped to -len-1 -> fromIndex becomes -1, terminates for-loop directly) - */ - from_idx = duk_to_int_clamped(thr, 1, (idx_step > 0 ? -len : -len - 1), (idx_step > 0 ? len : len - 1)); - if (from_idx < 0) { - /* for lastIndexOf, result may be -1 (mark immediate termination) */ - from_idx = len + from_idx; - } - } else { - /* for indexOf, ToInteger(undefined) would be 0, i.e. correct, but - * handle both indexOf and lastIndexOf specially here. - */ - if (idx_step > 0) { - from_idx = 0; - } else { - from_idx = len - 1; - } - } - - /* stack[0] = searchElement - * stack[1] = fromIndex - * stack[2] = object - * stack[3] = length (not needed, but not popped above) - */ - - for (i = from_idx; i >= 0 && i < len; i += idx_step) { - DUK_ASSERT_TOP(thr, 4); - - if (duk_get_prop_index(thr, 2, (duk_uarridx_t) i)) { - DUK_ASSERT_TOP(thr, 5); - if (duk_strict_equals(thr, 0, 4)) { - duk_push_int(thr, i); - return 1; - } - } - - duk_pop_unsafe(thr); - } - -not_found: - duk_push_int(thr, -1); - return 1; -} - -/* - * every(), some(), forEach(), map(), filter() - */ - -#define DUK__ITER_EVERY 0 -#define DUK__ITER_SOME 1 -#define DUK__ITER_FOREACH 2 -#define DUK__ITER_MAP 3 -#define DUK__ITER_FILTER 4 - -/* XXX: This helper is a bit awkward because the handling for the different iteration - * callers is quite different. This now compiles to a bit less than 500 bytes, so with - * 5 callers the net result is about 100 bytes / caller. - */ - -DUK_INTERNAL duk_ret_t duk_bi_array_prototype_iter_shared(duk_hthread *thr) { - duk_uint32_t len; - duk_uint32_t i; - duk_uarridx_t k; - duk_bool_t bval; - duk_small_int_t iter_type = duk_get_current_magic(thr); - duk_uint32_t res_length = 0; - - /* each call this helper serves has nargs==2 */ - DUK_ASSERT_TOP(thr, 2); - - len = duk__push_this_obj_len_u32(thr); - duk_require_callable(thr, 0); - /* if thisArg not supplied, behave as if undefined was supplied */ - - if (iter_type == DUK__ITER_MAP || iter_type == DUK__ITER_FILTER) { - duk_push_array(thr); - } else { - duk_push_undefined(thr); - } - - /* stack[0] = callback - * stack[1] = thisArg - * stack[2] = object - * stack[3] = ToUint32(length) (unused, but avoid unnecessary pop) - * stack[4] = result array (or undefined) - */ - - k = 0; /* result index for filter() */ - for (i = 0; i < len; i++) { - DUK_ASSERT_TOP(thr, 5); - - if (!duk_get_prop_index(thr, 2, (duk_uarridx_t) i)) { - /* For 'map' trailing missing elements don't invoke the - * callback but count towards the result length. - */ - if (iter_type == DUK__ITER_MAP) { - res_length = i + 1; - } - duk_pop_undefined(thr); - continue; - } - - /* The original value needs to be preserved for filter(), hence - * this funny order. We can't re-get the value because of side - * effects. - */ - - duk_dup_0(thr); - duk_dup_1(thr); - duk_dup_m3(thr); - duk_push_u32(thr, i); - duk_dup_2(thr); /* [ ... val callback thisArg val i obj ] */ - duk_call_method(thr, 3); /* -> [ ... val retval ] */ - - switch (iter_type) { - case DUK__ITER_EVERY: - bval = duk_to_boolean(thr, -1); - if (!bval) { - /* stack top contains 'false' */ - return 1; - } - break; - case DUK__ITER_SOME: - bval = duk_to_boolean(thr, -1); - if (bval) { - /* stack top contains 'true' */ - return 1; - } - break; - case DUK__ITER_FOREACH: - /* nop */ - break; - case DUK__ITER_MAP: - duk_dup_top(thr); - duk_xdef_prop_index_wec(thr, 4, (duk_uarridx_t) i); /* retval to result[i] */ - res_length = i + 1; - break; - case DUK__ITER_FILTER: - bval = duk_to_boolean(thr, -1); - if (bval) { - duk_dup_m2(thr); /* orig value */ - duk_xdef_prop_index_wec(thr, 4, (duk_uarridx_t) k); - k++; - res_length = k; - } - break; - default: - DUK_UNREACHABLE(); - break; - } - duk_pop_2_unsafe(thr); - - DUK_ASSERT_TOP(thr, 5); - } - - switch (iter_type) { - case DUK__ITER_EVERY: - duk_push_true(thr); - break; - case DUK__ITER_SOME: - duk_push_false(thr); - break; - case DUK__ITER_FOREACH: - duk_push_undefined(thr); - break; - case DUK__ITER_MAP: - case DUK__ITER_FILTER: - DUK_ASSERT_TOP(thr, 5); - DUK_ASSERT(duk_is_array(thr, -1)); /* topmost element is the result array already */ - duk_push_u32(thr, res_length); - duk_xdef_prop_stridx_short(thr, -2, DUK_STRIDX_LENGTH, DUK_PROPDESC_FLAGS_W); - break; - default: - DUK_UNREACHABLE(); - break; - } - - return 1; -} - -/* - * reduce(), reduceRight() - */ - -DUK_INTERNAL duk_ret_t duk_bi_array_prototype_reduce_shared(duk_hthread *thr) { - duk_idx_t nargs; - duk_bool_t have_acc; - duk_uint32_t i, len; - duk_small_int_t idx_step = duk_get_current_magic(thr); /* idx_step is +1 for reduce, -1 for reduceRight */ - - /* We're a varargs function because we need to detect whether - * initialValue was given or not. - */ - nargs = duk_get_top(thr); - DUK_DDD(DUK_DDDPRINT("nargs=%ld", (long) nargs)); - - duk_set_top(thr, 2); - len = duk__push_this_obj_len_u32(thr); - duk_require_callable(thr, 0); - - /* stack[0] = callback fn - * stack[1] = initialValue - * stack[2] = object (coerced this) - * stack[3] = length (not needed, but not popped above) - * stack[4] = accumulator - */ - - have_acc = 0; - if (nargs >= 2) { - duk_dup_1(thr); - have_acc = 1; - } - DUK_DDD(DUK_DDDPRINT("have_acc=%ld, acc=%!T", (long) have_acc, (duk_tval *) duk_get_tval(thr, 3))); - - /* For len == 0, i is initialized to len - 1 which underflows. - * The condition (i < len) will then exit the for-loop on the - * first round which is correct. Similarly, loop termination - * happens by i underflowing. - */ - - for (i = (idx_step >= 0 ? 0 : len - 1); i < len; /* i >= 0 would always be true */ - i += (duk_uint32_t) idx_step) { - DUK_DDD(DUK_DDDPRINT("i=%ld, len=%ld, have_acc=%ld, top=%ld, acc=%!T", - (long) i, - (long) len, - (long) have_acc, - (long) duk_get_top(thr), - (duk_tval *) duk_get_tval(thr, 4))); - - DUK_ASSERT((have_acc && duk_get_top(thr) == 5) || (!have_acc && duk_get_top(thr) == 4)); - - if (!duk_has_prop_index(thr, 2, (duk_uarridx_t) i)) { - continue; - } - - if (!have_acc) { - DUK_ASSERT_TOP(thr, 4); - duk_get_prop_index(thr, 2, (duk_uarridx_t) i); - have_acc = 1; - DUK_ASSERT_TOP(thr, 5); - } else { - DUK_ASSERT_TOP(thr, 5); - duk_dup_0(thr); - duk_dup(thr, 4); - duk_get_prop_index(thr, 2, (duk_uarridx_t) i); - duk_push_u32(thr, i); - duk_dup_2(thr); - DUK_DDD(DUK_DDDPRINT("calling reduce function: func=%!T, prev=%!T, curr=%!T, idx=%!T, obj=%!T", - (duk_tval *) duk_get_tval(thr, -5), - (duk_tval *) duk_get_tval(thr, -4), - (duk_tval *) duk_get_tval(thr, -3), - (duk_tval *) duk_get_tval(thr, -2), - (duk_tval *) duk_get_tval(thr, -1))); - duk_call(thr, 4); - DUK_DDD(DUK_DDDPRINT("-> result: %!T", (duk_tval *) duk_get_tval(thr, -1))); - duk_replace(thr, 4); - DUK_ASSERT_TOP(thr, 5); - } - } - - if (!have_acc) { - DUK_DCERROR_TYPE_INVALID_ARGS(thr); - } - - DUK_ASSERT_TOP(thr, 5); - return 1; -} - -#endif /* DUK_USE_ARRAY_BUILTIN */ - -/* automatic undefs */ -#undef DUK__ARRAY_MID_JOIN_LIMIT -#undef DUK__ITER_EVERY -#undef DUK__ITER_FILTER -#undef DUK__ITER_FOREACH -#undef DUK__ITER_MAP -#undef DUK__ITER_SOME -#line 1 "duk_bi_boolean.c" -/* - * Boolean built-ins - */ - -/* #include duk_internal.h -> already included */ - -#if defined(DUK_USE_BOOLEAN_BUILTIN) - -/* Shared helper to provide toString() and valueOf(). Checks 'this', gets - * the primitive value to stack top, and optionally coerces with ToString(). - */ -DUK_INTERNAL duk_ret_t duk_bi_boolean_prototype_tostring_shared(duk_hthread *thr) { - duk_tval *tv; - duk_hobject *h; - duk_small_int_t coerce_tostring = duk_get_current_magic(thr); - - /* XXX: there is room to use a shared helper here, many built-ins - * check the 'this' type, and if it's an object, check its class, - * then get its internal value, etc. - */ - - duk_push_this(thr); - tv = duk_get_tval(thr, -1); - DUK_ASSERT(tv != NULL); - - if (DUK_TVAL_IS_BOOLEAN(tv)) { - goto type_ok; - } else if (DUK_TVAL_IS_OBJECT(tv)) { - h = DUK_TVAL_GET_OBJECT(tv); - DUK_ASSERT(h != NULL); - - if (DUK_HOBJECT_GET_CLASS_NUMBER(h) == DUK_HOBJECT_CLASS_BOOLEAN) { - duk_xget_owndataprop_stridx_short(thr, -1, DUK_STRIDX_INT_VALUE); - DUK_ASSERT(duk_is_boolean(thr, -1)); - goto type_ok; - } - } - - DUK_DCERROR_TYPE_INVALID_ARGS(thr); - /* never here */ - -type_ok: - if (coerce_tostring) { - duk_to_string(thr, -1); - } - return 1; -} - -DUK_INTERNAL duk_ret_t duk_bi_boolean_constructor(duk_hthread *thr) { - duk_hobject *h_this; - - duk_to_boolean(thr, 0); - - if (duk_is_constructor_call(thr)) { - /* XXX: helper; rely on Boolean.prototype as being non-writable, non-configurable */ - duk_push_this(thr); - h_this = duk_known_hobject(thr, -1); - DUK_ASSERT(DUK_HOBJECT_GET_PROTOTYPE(thr->heap, h_this) == thr->builtins[DUK_BIDX_BOOLEAN_PROTOTYPE]); - - DUK_HOBJECT_SET_CLASS_NUMBER(h_this, DUK_HOBJECT_CLASS_BOOLEAN); - - duk_dup_0(thr); /* -> [ val obj val ] */ - duk_xdef_prop_stridx_short(thr, -2, DUK_STRIDX_INT_VALUE, DUK_PROPDESC_FLAGS_NONE); /* XXX: proper flags? */ - } /* unbalanced stack */ - - return 1; -} - -#endif /* DUK_USE_BOOLEAN_BUILTIN */ -#line 1 "duk_bi_buffer.c" -/* - * ES2015 TypedArray and Node.js Buffer built-ins - */ - -/* #include duk_internal.h -> already included */ - -/* - * Helpers for buffer handling, enabled with DUK_USE_BUFFEROBJECT_SUPPORT. - */ - -#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) -/* Map class number (minus DUK_HOBJECT_CLASS_BUFOBJ_MIN) to a bidx for the - * default internal prototype. - */ -static const duk_uint8_t duk__buffer_proto_from_classnum[] = { - DUK_BIDX_ARRAYBUFFER_PROTOTYPE, DUK_BIDX_DATAVIEW_PROTOTYPE, DUK_BIDX_INT8ARRAY_PROTOTYPE, - DUK_BIDX_UINT8ARRAY_PROTOTYPE, DUK_BIDX_UINT8CLAMPEDARRAY_PROTOTYPE, DUK_BIDX_INT16ARRAY_PROTOTYPE, - DUK_BIDX_UINT16ARRAY_PROTOTYPE, DUK_BIDX_INT32ARRAY_PROTOTYPE, DUK_BIDX_UINT32ARRAY_PROTOTYPE, - DUK_BIDX_FLOAT32ARRAY_PROTOTYPE, DUK_BIDX_FLOAT64ARRAY_PROTOTYPE -}; - -/* Map DUK_HBUFOBJ_ELEM_xxx to duk_hobject class number. - * Sync with duk_hbufobj.h and duk_hobject.h. - */ -static const duk_uint8_t duk__buffer_class_from_elemtype[9] = { DUK_HOBJECT_CLASS_UINT8ARRAY, DUK_HOBJECT_CLASS_UINT8CLAMPEDARRAY, - DUK_HOBJECT_CLASS_INT8ARRAY, DUK_HOBJECT_CLASS_UINT16ARRAY, - DUK_HOBJECT_CLASS_INT16ARRAY, DUK_HOBJECT_CLASS_UINT32ARRAY, - DUK_HOBJECT_CLASS_INT32ARRAY, DUK_HOBJECT_CLASS_FLOAT32ARRAY, - DUK_HOBJECT_CLASS_FLOAT64ARRAY }; - -/* Map DUK_HBUFOBJ_ELEM_xxx to prototype object built-in index. - * Sync with duk_hbufobj.h. - */ -static const duk_uint8_t duk__buffer_proto_from_elemtype[9] = { - DUK_BIDX_UINT8ARRAY_PROTOTYPE, DUK_BIDX_UINT8CLAMPEDARRAY_PROTOTYPE, DUK_BIDX_INT8ARRAY_PROTOTYPE, - DUK_BIDX_UINT16ARRAY_PROTOTYPE, DUK_BIDX_INT16ARRAY_PROTOTYPE, DUK_BIDX_UINT32ARRAY_PROTOTYPE, - DUK_BIDX_INT32ARRAY_PROTOTYPE, DUK_BIDX_FLOAT32ARRAY_PROTOTYPE, DUK_BIDX_FLOAT64ARRAY_PROTOTYPE -}; - -/* Map DUK__FLD_xxx to byte size. */ -static const duk_uint8_t duk__buffer_nbytes_from_fldtype[6] = { - 1, /* DUK__FLD_8BIT */ - 2, /* DUK__FLD_16BIT */ - 4, /* DUK__FLD_32BIT */ - 4, /* DUK__FLD_FLOAT */ - 8, /* DUK__FLD_DOUBLE */ - 0 /* DUK__FLD_VARINT; not relevant here */ -}; - -/* Bitfield for each DUK_HBUFOBJ_ELEM_xxx indicating which element types - * are compatible with a blind byte copy for the TypedArray set() method (also - * used for TypedArray constructor). Array index is target buffer elem type, - * bitfield indicates compatible source types. The types must have same byte - * size and they must be coercion compatible. - */ -#if !defined(DUK_USE_PREFER_SIZE) -static duk_uint16_t duk__buffer_elemtype_copy_compatible[9] = { - /* xxx -> DUK_HBUFOBJ_ELEM_UINT8 */ - (1U << DUK_HBUFOBJ_ELEM_UINT8) | (1U << DUK_HBUFOBJ_ELEM_UINT8CLAMPED) | (1U << DUK_HBUFOBJ_ELEM_INT8), - - /* xxx -> DUK_HBUFOBJ_ELEM_UINT8CLAMPED - * Note: INT8 is -not- copy compatible, e.g. -1 would coerce to 0x00. - */ - (1U << DUK_HBUFOBJ_ELEM_UINT8) | (1U << DUK_HBUFOBJ_ELEM_UINT8CLAMPED), - - /* xxx -> DUK_HBUFOBJ_ELEM_INT8 */ - (1U << DUK_HBUFOBJ_ELEM_UINT8) | (1U << DUK_HBUFOBJ_ELEM_UINT8CLAMPED) | (1U << DUK_HBUFOBJ_ELEM_INT8), - - /* xxx -> DUK_HBUFOBJ_ELEM_UINT16 */ - (1U << DUK_HBUFOBJ_ELEM_UINT16) | (1U << DUK_HBUFOBJ_ELEM_INT16), - - /* xxx -> DUK_HBUFOBJ_ELEM_INT16 */ - (1U << DUK_HBUFOBJ_ELEM_UINT16) | (1U << DUK_HBUFOBJ_ELEM_INT16), - - /* xxx -> DUK_HBUFOBJ_ELEM_UINT32 */ - (1U << DUK_HBUFOBJ_ELEM_UINT32) | (1U << DUK_HBUFOBJ_ELEM_INT32), - - /* xxx -> DUK_HBUFOBJ_ELEM_INT32 */ - (1U << DUK_HBUFOBJ_ELEM_UINT32) | (1U << DUK_HBUFOBJ_ELEM_INT32), - - /* xxx -> DUK_HBUFOBJ_ELEM_FLOAT32 */ - (1U << DUK_HBUFOBJ_ELEM_FLOAT32), - - /* xxx -> DUK_HBUFOBJ_ELEM_FLOAT64 */ - (1U << DUK_HBUFOBJ_ELEM_FLOAT64) -}; -#endif /* !DUK_USE_PREFER_SIZE */ - -DUK_LOCAL duk_hbufobj *duk__hbufobj_promote_this(duk_hthread *thr) { - duk_tval *tv_dst; - duk_hbufobj *res; - - duk_push_this(thr); - DUK_ASSERT(duk_is_buffer(thr, -1)); - res = (duk_hbufobj *) duk_to_hobject(thr, -1); - DUK_HBUFOBJ_ASSERT_VALID(res); - DUK_DD(DUK_DDPRINT("promoted 'this' automatically to an ArrayBuffer: %!iT", duk_get_tval(thr, -1))); - - tv_dst = duk_get_borrowed_this_tval(thr); - DUK_TVAL_SET_OBJECT_UPDREF(thr, tv_dst, (duk_hobject *) res); - duk_pop(thr); - - return res; -} - -#define DUK__BUFOBJ_FLAG_THROW (1 << 0) -#define DUK__BUFOBJ_FLAG_PROMOTE (1 << 1) - -/* Shared helper. When DUK__BUFOBJ_FLAG_PROMOTE is given, the return value is - * always a duk_hbufobj *. Without the flag the return value can also be a - * plain buffer, and the caller must check for it using DUK_HEAPHDR_IS_BUFFER(). - */ -DUK_LOCAL duk_heaphdr *duk__getrequire_bufobj_this(duk_hthread *thr, duk_small_uint_t flags) { - duk_tval *tv; - duk_hbufobj *h_this; - - DUK_ASSERT(thr != NULL); - - tv = duk_get_borrowed_this_tval(thr); - DUK_ASSERT(tv != NULL); - - if (DUK_TVAL_IS_OBJECT(tv)) { - h_this = (duk_hbufobj *) DUK_TVAL_GET_OBJECT(tv); - DUK_ASSERT(h_this != NULL); - if (DUK_HOBJECT_IS_BUFOBJ((duk_hobject *) h_this)) { - DUK_HBUFOBJ_ASSERT_VALID(h_this); - return (duk_heaphdr *) h_this; - } - } else if (DUK_TVAL_IS_BUFFER(tv)) { - if (flags & DUK__BUFOBJ_FLAG_PROMOTE) { - /* Promote a plain buffer to a Uint8Array. This is very - * inefficient but allows plain buffer to be used wherever an - * Uint8Array is used with very small cost; hot path functions - * like index read/write calls should provide direct buffer - * support to avoid promotion. - */ - /* XXX: make this conditional to a flag if call sites need it? */ - h_this = duk__hbufobj_promote_this(thr); - DUK_ASSERT(h_this != NULL); - DUK_HBUFOBJ_ASSERT_VALID(h_this); - return (duk_heaphdr *) h_this; - } else { - /* XXX: ugly, share return pointer for duk_hbuffer. */ - return (duk_heaphdr *) DUK_TVAL_GET_BUFFER(tv); - } - } - - if (flags & DUK__BUFOBJ_FLAG_THROW) { - DUK_ERROR_TYPE(thr, DUK_STR_NOT_BUFFER); - DUK_WO_NORETURN(return NULL;); - } - return NULL; -} - -/* Check that 'this' is a duk_hbufobj and return a pointer to it. */ -DUK_LOCAL duk_hbufobj *duk__get_bufobj_this(duk_hthread *thr) { - return (duk_hbufobj *) duk__getrequire_bufobj_this(thr, DUK__BUFOBJ_FLAG_PROMOTE); -} - -/* Check that 'this' is a duk_hbufobj and return a pointer to it - * (NULL if not). - */ -DUK_LOCAL duk_hbufobj *duk__require_bufobj_this(duk_hthread *thr) { - return (duk_hbufobj *) duk__getrequire_bufobj_this(thr, DUK__BUFOBJ_FLAG_THROW | DUK__BUFOBJ_FLAG_PROMOTE); -} - -/* Check that value is a duk_hbufobj and return a pointer to it. */ -DUK_LOCAL duk_hbufobj *duk__require_bufobj_value(duk_hthread *thr, duk_idx_t idx) { - duk_tval *tv; - duk_hbufobj *h_obj; - - /* Don't accept relative indices now. */ - DUK_ASSERT(idx >= 0); - - tv = duk_require_tval(thr, idx); - DUK_ASSERT(tv != NULL); - if (DUK_TVAL_IS_OBJECT(tv)) { - h_obj = (duk_hbufobj *) DUK_TVAL_GET_OBJECT(tv); - DUK_ASSERT(h_obj != NULL); - if (DUK_HOBJECT_IS_BUFOBJ((duk_hobject *) h_obj)) { - DUK_HBUFOBJ_ASSERT_VALID(h_obj); - return h_obj; - } - } else if (DUK_TVAL_IS_BUFFER(tv)) { - h_obj = (duk_hbufobj *) duk_to_hobject(thr, idx); - DUK_ASSERT(h_obj != NULL); - DUK_HBUFOBJ_ASSERT_VALID(h_obj); - return h_obj; - } - - DUK_ERROR_TYPE(thr, DUK_STR_NOT_BUFFER); - DUK_WO_NORETURN(return NULL;); -} - -DUK_LOCAL void duk__set_bufobj_buffer(duk_hthread *thr, duk_hbufobj *h_bufobj, duk_hbuffer *h_val) { - DUK_ASSERT(thr != NULL); - DUK_ASSERT(h_bufobj != NULL); - DUK_ASSERT(h_bufobj->buf == NULL); /* no need to decref */ - DUK_ASSERT(h_val != NULL); - DUK_HBUFOBJ_ASSERT_VALID(h_bufobj); - DUK_UNREF(thr); - - h_bufobj->buf = h_val; - DUK_HBUFFER_INCREF(thr, h_val); - h_bufobj->length = (duk_uint_t) DUK_HBUFFER_GET_SIZE(h_val); - DUK_ASSERT(h_bufobj->shift == 0); - DUK_ASSERT(h_bufobj->elem_type == DUK_HBUFOBJ_ELEM_UINT8); - DUK_ASSERT(h_bufobj->is_typedarray == 0); - - DUK_HBUFOBJ_ASSERT_VALID(h_bufobj); -} - -/* Shared offset/length coercion helper. */ -DUK_LOCAL void duk__resolve_offset_opt_length(duk_hthread *thr, - duk_hbufobj *h_bufarg, - duk_idx_t idx_offset, - duk_idx_t idx_length, - duk_uint_t *out_offset, - duk_uint_t *out_length, - duk_bool_t throw_flag) { - duk_int_t offset_signed; - duk_int_t length_signed; - duk_uint_t offset; - duk_uint_t length; - - offset_signed = duk_to_int(thr, idx_offset); - if (offset_signed < 0) { - goto fail_range; - } - offset = (duk_uint_t) offset_signed; - if (offset > h_bufarg->length) { - goto fail_range; - } - DUK_ASSERT_DISABLE(offset >= 0); /* unsigned */ - DUK_ASSERT(offset <= h_bufarg->length); - - if (duk_is_undefined(thr, idx_length)) { - DUK_ASSERT(h_bufarg->length >= offset); - length = h_bufarg->length - offset; /* >= 0 */ - } else { - length_signed = duk_to_int(thr, idx_length); - if (length_signed < 0) { - goto fail_range; - } - length = (duk_uint_t) length_signed; - DUK_ASSERT(h_bufarg->length >= offset); - if (length > h_bufarg->length - offset) { - /* Unlike for negative arguments, some call sites - * want length to be clamped if it's positive. - */ - if (throw_flag) { - goto fail_range; - } else { - length = h_bufarg->length - offset; - } - } - } - DUK_ASSERT_DISABLE(length >= 0); /* unsigned */ - DUK_ASSERT(offset + length <= h_bufarg->length); - - *out_offset = offset; - *out_length = length; - return; - -fail_range: - DUK_ERROR_RANGE(thr, DUK_STR_INVALID_ARGS); - DUK_WO_NORETURN(return;); -} - -/* Shared lenient buffer length clamping helper. No negative indices, no - * element/byte shifting. - */ -DUK_LOCAL void duk__clamp_startend_nonegidx_noshift(duk_hthread *thr, - duk_int_t buffer_length, - duk_idx_t idx_start, - duk_idx_t idx_end, - duk_int_t *out_start_offset, - duk_int_t *out_end_offset) { - duk_int_t start_offset; - duk_int_t end_offset; - - DUK_ASSERT(out_start_offset != NULL); - DUK_ASSERT(out_end_offset != NULL); - - /* undefined coerces to zero which is correct */ - start_offset = duk_to_int_clamped(thr, idx_start, 0, buffer_length); - if (duk_is_undefined(thr, idx_end)) { - end_offset = buffer_length; - } else { - end_offset = duk_to_int_clamped(thr, idx_end, start_offset, buffer_length); - } - - DUK_ASSERT(start_offset >= 0); - DUK_ASSERT(start_offset <= buffer_length); - DUK_ASSERT(end_offset >= 0); - DUK_ASSERT(end_offset <= buffer_length); - DUK_ASSERT(start_offset <= end_offset); - - *out_start_offset = start_offset; - *out_end_offset = end_offset; -} - -/* Shared lenient buffer length clamping helper. Indices are treated as - * element indices (though output values are byte offsets) which only - * really matters for TypedArray views as other buffer object have a zero - * shift. Negative indices are counted from end of input slice; crossed - * indices are clamped to zero length; and final indices are clamped - * against input slice. Used for e.g. ArrayBuffer slice(). - */ -DUK_LOCAL void duk__clamp_startend_negidx_shifted(duk_hthread *thr, - duk_int_t buffer_length, - duk_uint8_t buffer_shift, - duk_idx_t idx_start, - duk_idx_t idx_end, - duk_int_t *out_start_offset, - duk_int_t *out_end_offset) { - duk_int_t start_offset; - duk_int_t end_offset; - - DUK_ASSERT(out_start_offset != NULL); - DUK_ASSERT(out_end_offset != NULL); - - buffer_length >>= buffer_shift; /* as (full) elements */ - - /* Resolve start/end offset as element indices first; arguments - * at idx_start/idx_end are element offsets. Working with element - * indices first also avoids potential for wrapping. - */ - - start_offset = duk_to_int(thr, idx_start); - if (start_offset < 0) { - start_offset = buffer_length + start_offset; - } - if (duk_is_undefined(thr, idx_end)) { - end_offset = buffer_length; - } else { - end_offset = duk_to_int(thr, idx_end); - if (end_offset < 0) { - end_offset = buffer_length + end_offset; - } - } - /* Note: start_offset/end_offset can still be < 0 here. */ - - if (start_offset < 0) { - start_offset = 0; - } else if (start_offset > buffer_length) { - start_offset = buffer_length; - } - if (end_offset < start_offset) { - end_offset = start_offset; - } else if (end_offset > buffer_length) { - end_offset = buffer_length; - } - DUK_ASSERT(start_offset >= 0); - DUK_ASSERT(start_offset <= buffer_length); - DUK_ASSERT(end_offset >= 0); - DUK_ASSERT(end_offset <= buffer_length); - DUK_ASSERT(start_offset <= end_offset); - - /* Convert indices to byte offsets. */ - start_offset <<= buffer_shift; - end_offset <<= buffer_shift; - - *out_start_offset = start_offset; - *out_end_offset = end_offset; -} - -DUK_INTERNAL void duk_hbufobj_promote_plain(duk_hthread *thr, duk_idx_t idx) { - if (duk_is_buffer(thr, idx)) { - duk_to_object(thr, idx); - } -} - -DUK_INTERNAL void duk_hbufobj_push_uint8array_from_plain(duk_hthread *thr, duk_hbuffer *h_buf) { - /* Push Uint8Array which will share the same underlying buffer as - * the plain buffer argument. Also create an ArrayBuffer with the - * same backing for the result .buffer property. - */ - - duk_push_hbuffer(thr, h_buf); - duk_push_buffer_object(thr, -1, 0, (duk_size_t) DUK_HBUFFER_GET_SIZE(h_buf), DUK_BUFOBJ_UINT8ARRAY); - duk_remove_m2(thr); - -#if 0 - /* More verbose equivalent; maybe useful if e.g. .buffer is omitted. */ - h_bufobj = duk_push_bufobj_raw(thr, - DUK_HOBJECT_FLAG_EXTENSIBLE | - DUK_HOBJECT_FLAG_BUFOBJ | - DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_UINT8ARRAY), - DUK_BIDX_UINT8ARRAY_PROTOTYPE); - DUK_ASSERT(h_bufobj != NULL); - duk__set_bufobj_buffer(thr, h_bufobj, h_buf); - h_bufobj->is_typedarray = 1; - DUK_HBUFOBJ_ASSERT_VALID(h_bufobj); - - h_arrbuf = duk_push_bufobj_raw(thr, - DUK_HOBJECT_FLAG_EXTENSIBLE | - DUK_HOBJECT_FLAG_BUFOBJ | - DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_ARRAYBUFFER), - DUK_BIDX_ARRAYBUFFER_PROTOTYPE); - DUK_ASSERT(h_arrbuf != NULL); - duk__set_bufobj_buffer(thr, h_arrbuf, h_buf); - DUK_ASSERT(h_arrbuf->is_typedarray == 0); - DUK_HBUFOBJ_ASSERT_VALID(h_arrbuf); - - DUK_ASSERT(h_bufobj->buf_prop == NULL); - h_bufobj->buf_prop = (duk_hobject *) h_arrbuf; - DUK_ASSERT(h_arrbuf != NULL); - DUK_HBUFOBJ_INCREF(thr, h_arrbuf); - duk_pop(thr); -#endif -} - -/* Indexed read helper for buffer objects, also called from outside this file. */ -DUK_INTERNAL void duk_hbufobj_push_validated_read(duk_hthread *thr, - duk_hbufobj *h_bufobj, - duk_uint8_t *p, - duk_small_uint_t elem_size) { - duk_double_union du; - - DUK_ASSERT(elem_size > 0); - duk_memcpy((void *) du.uc, (const void *) p, (size_t) elem_size); - - switch (h_bufobj->elem_type) { - case DUK_HBUFOBJ_ELEM_UINT8: - case DUK_HBUFOBJ_ELEM_UINT8CLAMPED: - duk_push_uint(thr, (duk_uint_t) du.uc[0]); - break; - case DUK_HBUFOBJ_ELEM_INT8: - duk_push_int(thr, (duk_int_t) (duk_int8_t) du.uc[0]); - break; - case DUK_HBUFOBJ_ELEM_UINT16: - duk_push_uint(thr, (duk_uint_t) du.us[0]); - break; - case DUK_HBUFOBJ_ELEM_INT16: - duk_push_int(thr, (duk_int_t) (duk_int16_t) du.us[0]); - break; - case DUK_HBUFOBJ_ELEM_UINT32: - duk_push_uint(thr, (duk_uint_t) du.ui[0]); - break; - case DUK_HBUFOBJ_ELEM_INT32: - duk_push_int(thr, (duk_int_t) (duk_int32_t) du.ui[0]); - break; - case DUK_HBUFOBJ_ELEM_FLOAT32: - duk_push_number(thr, (duk_double_t) du.f[0]); - break; - case DUK_HBUFOBJ_ELEM_FLOAT64: - duk_push_number(thr, (duk_double_t) du.d); - break; - default: - DUK_UNREACHABLE(); - } -} - -/* Indexed write helper for buffer objects, also called from outside this file. */ -DUK_INTERNAL void duk_hbufobj_validated_write(duk_hthread *thr, duk_hbufobj *h_bufobj, duk_uint8_t *p, duk_small_uint_t elem_size) { - duk_double_union du; - - /* NOTE! Caller must ensure that any side effects from the - * coercions below are safe. If that cannot be guaranteed - * (which is normally the case), caller must coerce the - * argument using duk_to_number() before any pointer - * validations; the result of duk_to_number() always coerces - * without side effects here. - */ - - switch (h_bufobj->elem_type) { - case DUK_HBUFOBJ_ELEM_UINT8: - du.uc[0] = (duk_uint8_t) duk_to_uint32(thr, -1); - break; - case DUK_HBUFOBJ_ELEM_UINT8CLAMPED: - du.uc[0] = (duk_uint8_t) duk_to_uint8clamped(thr, -1); - break; - case DUK_HBUFOBJ_ELEM_INT8: - du.uc[0] = (duk_uint8_t) duk_to_int32(thr, -1); - break; - case DUK_HBUFOBJ_ELEM_UINT16: - du.us[0] = (duk_uint16_t) duk_to_uint32(thr, -1); - break; - case DUK_HBUFOBJ_ELEM_INT16: - du.us[0] = (duk_uint16_t) duk_to_int32(thr, -1); - break; - case DUK_HBUFOBJ_ELEM_UINT32: - du.ui[0] = (duk_uint32_t) duk_to_uint32(thr, -1); - break; - case DUK_HBUFOBJ_ELEM_INT32: - du.ui[0] = (duk_uint32_t) duk_to_int32(thr, -1); - break; - case DUK_HBUFOBJ_ELEM_FLOAT32: - /* A double-to-float cast is undefined behavior in C99 if - * the cast is out-of-range, so use a helper. Example: - * runtime error: value -1e+100 is outside the range of representable values of type 'float' - */ - du.f[0] = duk_double_to_float_t(duk_to_number_m1(thr)); - break; - case DUK_HBUFOBJ_ELEM_FLOAT64: - du.d = (duk_double_t) duk_to_number_m1(thr); - break; - default: - DUK_UNREACHABLE(); - } - - DUK_ASSERT(elem_size > 0); - duk_memcpy((void *) p, (const void *) du.uc, (size_t) elem_size); -} - -/* Helper to create a fixed buffer from argument value at index 0. - * Node.js and allocPlain() compatible. - */ -DUK_LOCAL duk_hbuffer *duk__hbufobj_fixed_from_argvalue(duk_hthread *thr) { - duk_int_t len; - duk_int_t i; - duk_size_t buf_size; - duk_uint8_t *buf; - - switch (duk_get_type(thr, 0)) { - case DUK_TYPE_NUMBER: { - len = duk_to_int_clamped(thr, 0, 0, DUK_INT_MAX); - (void) duk_push_fixed_buffer_zero(thr, (duk_size_t) len); - break; - } - case DUK_TYPE_BUFFER: { /* Treat like Uint8Array. */ - goto slow_copy; - } - case DUK_TYPE_OBJECT: { - duk_hobject *h; - duk_hbufobj *h_bufobj; - - /* For Node.js Buffers "Passing an ArrayBuffer returns a Buffer - * that shares allocated memory with the given ArrayBuffer." - * https://nodejs.org/api/buffer.html#buffer_buffer_from_buffer_alloc_and_buffer_allocunsafe - */ - - h = duk_known_hobject(thr, 0); - if (DUK_HOBJECT_GET_CLASS_NUMBER(h) == DUK_HOBJECT_CLASS_ARRAYBUFFER) { - DUK_ASSERT(DUK_HOBJECT_IS_BUFOBJ(h)); - h_bufobj = (duk_hbufobj *) h; - if (DUK_UNLIKELY(h_bufobj->buf == NULL)) { - DUK_ERROR_TYPE_INVALID_ARGS(thr); - DUK_WO_NORETURN(return NULL;); - } - if (DUK_UNLIKELY(h_bufobj->offset != 0 || h_bufobj->length != DUK_HBUFFER_GET_SIZE(h_bufobj->buf))) { - /* No support for ArrayBuffers with slice - * offset/length. - */ - DUK_ERROR_TYPE_INVALID_ARGS(thr); - DUK_WO_NORETURN(return NULL;); - } - duk_push_hbuffer(thr, h_bufobj->buf); - return h_bufobj->buf; - } - goto slow_copy; - } - case DUK_TYPE_STRING: { - /* ignore encoding for now */ - duk_require_hstring_notsymbol(thr, 0); - duk_dup_0(thr); - (void) duk_to_buffer(thr, -1, &buf_size); - break; - } - default: - DUK_ERROR_TYPE_INVALID_ARGS(thr); - DUK_WO_NORETURN(return NULL;); - } - -done: - DUK_ASSERT(duk_is_buffer(thr, -1)); - return duk_known_hbuffer(thr, -1); - -slow_copy: - /* XXX: fast path for typed arrays and other buffer objects? */ - - (void) duk_get_prop_stridx_short(thr, 0, DUK_STRIDX_LENGTH); - len = duk_to_int_clamped(thr, -1, 0, DUK_INT_MAX); - duk_pop(thr); - buf = (duk_uint8_t *) duk_push_fixed_buffer_nozero(thr, (duk_size_t) len); /* no zeroing, all indices get initialized */ - for (i = 0; i < len; i++) { - /* XXX: fast path for array or buffer arguments? */ - duk_get_prop_index(thr, 0, (duk_uarridx_t) i); - buf[i] = (duk_uint8_t) (duk_to_uint32(thr, -1) & 0xffU); - duk_pop(thr); - } - goto done; -} -#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ - -/* - * Node.js Buffer constructor - * - * Node.js Buffers are just Uint8Arrays with internal prototype set to - * Buffer.prototype so they're handled otherwise the same as Uint8Array. - * However, the constructor arguments are very different so a separate - * constructor entry point is used. - */ -#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) -DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_constructor(duk_hthread *thr) { - duk_hbuffer *h_buf; - - h_buf = duk__hbufobj_fixed_from_argvalue(thr); - DUK_ASSERT(h_buf != NULL); - - duk_push_buffer_object(thr, -1, 0, DUK_HBUFFER_FIXED_GET_SIZE((duk_hbuffer_fixed *) (void *) h_buf), DUK_BUFOBJ_UINT8ARRAY); - duk_push_hobject_bidx(thr, DUK_BIDX_NODEJS_BUFFER_PROTOTYPE); - duk_set_prototype(thr, -2); - - /* XXX: a more direct implementation */ - - return 1; -} -#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ - -/* - * ArrayBuffer, DataView, and TypedArray constructors - */ - -#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) -DUK_INTERNAL duk_ret_t duk_bi_arraybuffer_constructor(duk_hthread *thr) { - duk_hbufobj *h_bufobj; - duk_hbuffer *h_val; - duk_int_t len; - - DUK_CTX_ASSERT_VALID(thr); - - duk_require_constructor_call(thr); - - len = duk_to_int(thr, 0); - if (len < 0) { - goto fail_length; - } - (void) duk_push_fixed_buffer_zero(thr, (duk_size_t) len); - h_val = (duk_hbuffer *) duk_known_hbuffer(thr, -1); - - h_bufobj = duk_push_bufobj_raw(thr, - DUK_HOBJECT_FLAG_EXTENSIBLE | DUK_HOBJECT_FLAG_BUFOBJ | - DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_ARRAYBUFFER), - DUK_BIDX_ARRAYBUFFER_PROTOTYPE); - DUK_ASSERT(h_bufobj != NULL); - - duk__set_bufobj_buffer(thr, h_bufobj, h_val); - DUK_HBUFOBJ_ASSERT_VALID(h_bufobj); - - return 1; - -fail_length: - DUK_DCERROR_RANGE_INVALID_LENGTH(thr); -} -#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ - -/* Format of magic, bits: - * 0...1: elem size shift (0-3) - * 2...5: elem type (DUK_HBUFOBJ_ELEM_xxx) - * - * XXX: add prototype bidx explicitly to magic instead of using a mapping? - */ - -#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) -DUK_INTERNAL duk_ret_t duk_bi_typedarray_constructor(duk_hthread *thr) { - duk_tval *tv; - duk_hobject *h_obj; - duk_hbufobj *h_bufobj = NULL; - duk_hbufobj *h_bufarg = NULL; - duk_hbuffer *h_val; - duk_small_uint_t magic; - duk_small_uint_t shift; - duk_small_uint_t elem_type; - duk_small_uint_t elem_size; - duk_small_uint_t class_num; - duk_small_uint_t proto_bidx; - duk_uint_t align_mask; - duk_uint_t elem_length; - duk_int_t elem_length_signed; - duk_uint_t byte_length; - duk_small_uint_t copy_mode; - - /* XXX: The same copy helpers could be shared with at least some - * buffer functions. - */ - - duk_require_constructor_call(thr); - - /* We could fit built-in index into magic but that'd make the magic - * number dependent on built-in numbering (genbuiltins.py doesn't - * handle that yet). So map both class and prototype from the - * element type. - */ - magic = (duk_small_uint_t) duk_get_current_magic(thr); - shift = magic & 0x03U; /* bits 0...1: shift */ - elem_type = (magic >> 2) & 0x0fU; /* bits 2...5: type */ - elem_size = 1U << shift; - align_mask = elem_size - 1; - DUK_ASSERT(elem_type < sizeof(duk__buffer_proto_from_elemtype) / sizeof(duk_uint8_t)); - proto_bidx = duk__buffer_proto_from_elemtype[elem_type]; - DUK_ASSERT(proto_bidx < DUK_NUM_BUILTINS); - DUK_ASSERT(elem_type < sizeof(duk__buffer_class_from_elemtype) / sizeof(duk_uint8_t)); - class_num = duk__buffer_class_from_elemtype[elem_type]; - - DUK_DD(DUK_DDPRINT("typedarray constructor, magic=%d, shift=%d, elem_type=%d, " - "elem_size=%d, proto_bidx=%d, class_num=%d", - (int) magic, - (int) shift, - (int) elem_type, - (int) elem_size, - (int) proto_bidx, - (int) class_num)); - - /* Argument variants. When the argument is an ArrayBuffer a view to - * the same buffer is created; otherwise a new ArrayBuffer is always - * created. - */ - - /* XXX: initial iteration to treat a plain buffer like an ArrayBuffer: - * coerce to an ArrayBuffer object and use that as .buffer. The underlying - * buffer will be the same but result .buffer !== inputPlainBuffer. - */ - duk_hbufobj_promote_plain(thr, 0); - - tv = duk_get_tval(thr, 0); - DUK_ASSERT(tv != NULL); /* arg count */ - if (DUK_TVAL_IS_OBJECT(tv)) { - h_obj = DUK_TVAL_GET_OBJECT(tv); - DUK_ASSERT(h_obj != NULL); - - if (DUK_HOBJECT_GET_CLASS_NUMBER(h_obj) == DUK_HOBJECT_CLASS_ARRAYBUFFER) { - /* ArrayBuffer: unlike any other argument variant, create - * a view into the existing buffer. - */ - - duk_int_t byte_offset_signed; - duk_uint_t byte_offset; - - h_bufarg = (duk_hbufobj *) h_obj; - - byte_offset_signed = duk_to_int(thr, 1); - if (byte_offset_signed < 0) { - goto fail_arguments; - } - byte_offset = (duk_uint_t) byte_offset_signed; - if (byte_offset > h_bufarg->length || (byte_offset & align_mask) != 0) { - /* Must be >= 0 and multiple of element size. */ - goto fail_arguments; - } - if (duk_is_undefined(thr, 2)) { - DUK_ASSERT(h_bufarg->length >= byte_offset); - byte_length = h_bufarg->length - byte_offset; - if ((byte_length & align_mask) != 0) { - /* Must be element size multiple from - * start offset to end of buffer. - */ - goto fail_arguments; - } - elem_length = (byte_length >> shift); - } else { - elem_length_signed = duk_to_int(thr, 2); - if (elem_length_signed < 0) { - goto fail_arguments; - } - elem_length = (duk_uint_t) elem_length_signed; - byte_length = elem_length << shift; - if ((byte_length >> shift) != elem_length) { - /* Byte length would overflow. */ - /* XXX: easier check with less code? */ - goto fail_arguments; - } - DUK_ASSERT(h_bufarg->length >= byte_offset); - if (byte_length > h_bufarg->length - byte_offset) { - /* Not enough data. */ - goto fail_arguments; - } - } - DUK_UNREF(elem_length); - DUK_ASSERT_DISABLE(byte_offset >= 0); - DUK_ASSERT(byte_offset <= h_bufarg->length); - DUK_ASSERT_DISABLE(byte_length >= 0); - DUK_ASSERT(byte_offset + byte_length <= h_bufarg->length); - DUK_ASSERT((elem_length << shift) == byte_length); - - h_bufobj = duk_push_bufobj_raw(thr, - DUK_HOBJECT_FLAG_EXTENSIBLE | DUK_HOBJECT_FLAG_BUFOBJ | - DUK_HOBJECT_CLASS_AS_FLAGS(class_num), - (duk_small_int_t) proto_bidx); - h_val = h_bufarg->buf; - if (h_val == NULL) { - DUK_DCERROR_TYPE_INVALID_ARGS(thr); - } - h_bufobj->buf = h_val; - DUK_HBUFFER_INCREF(thr, h_val); - h_bufobj->offset = h_bufarg->offset + byte_offset; - h_bufobj->length = byte_length; - h_bufobj->shift = (duk_uint8_t) shift; - h_bufobj->elem_type = (duk_uint8_t) elem_type; - h_bufobj->is_typedarray = 1; - DUK_HBUFOBJ_ASSERT_VALID(h_bufobj); - - /* Set .buffer to the argument ArrayBuffer. */ - DUK_ASSERT(h_bufobj->buf_prop == NULL); - h_bufobj->buf_prop = (duk_hobject *) h_bufarg; - DUK_ASSERT(h_bufarg != NULL); - DUK_HBUFOBJ_INCREF(thr, h_bufarg); - return 1; - } else if (DUK_HOBJECT_IS_BUFOBJ(h_obj)) { - /* TypedArray (or other non-ArrayBuffer duk_hbufobj). - * Conceptually same behavior as for an Array-like argument, - * with a few fast paths. - */ - - h_bufarg = (duk_hbufobj *) h_obj; - DUK_HBUFOBJ_ASSERT_VALID(h_bufarg); - elem_length_signed = (duk_int_t) (h_bufarg->length >> h_bufarg->shift); - if (h_bufarg->buf == NULL) { - DUK_DCERROR_TYPE_INVALID_ARGS(thr); - } - - /* Select copy mode. Must take into account element - * compatibility and validity of the underlying source - * buffer. - */ - - DUK_DDD(DUK_DDDPRINT("selecting copy mode for bufobj arg, " - "src byte_length=%ld, src shift=%d, " - "src/dst elem_length=%ld; " - "dst shift=%d -> dst byte_length=%ld", - (long) h_bufarg->length, - (int) h_bufarg->shift, - (long) elem_length_signed, - (int) shift, - (long) (elem_length_signed << shift))); - - copy_mode = 2; /* default is explicit index read/write copy */ -#if !defined(DUK_USE_PREFER_SIZE) - /* With a size optimized build copy_mode 2 is enough. - * Modes 0 and 1 are faster but conceptually the same. - */ - DUK_ASSERT(elem_type < sizeof(duk__buffer_elemtype_copy_compatible) / sizeof(duk_uint16_t)); - if (DUK_HBUFOBJ_VALID_SLICE(h_bufarg)) { - if ((duk__buffer_elemtype_copy_compatible[elem_type] & (1 << h_bufarg->elem_type)) != 0) { - DUK_DDD(DUK_DDDPRINT("source/target are copy compatible, memcpy")); - DUK_ASSERT(shift == h_bufarg->shift); /* byte sizes will match */ - copy_mode = 0; - } else { - DUK_DDD(DUK_DDDPRINT("source/target not copy compatible but valid, fast copy")); - copy_mode = 1; - } - } -#endif /* !DUK_USE_PREFER_SIZE */ - } else { - /* Array or Array-like */ - elem_length_signed = (duk_int_t) duk_get_length(thr, 0); - copy_mode = 2; - } - } else { - /* Non-object argument is simply int coerced, matches - * V8 behavior (except for "null", which we coerce to - * 0 but V8 TypeErrors). - */ - elem_length_signed = duk_to_int(thr, 0); - copy_mode = 3; - } - if (elem_length_signed < 0) { - goto fail_arguments; - } - elem_length = (duk_uint_t) elem_length_signed; - byte_length = (duk_uint_t) (elem_length << shift); - if ((byte_length >> shift) != elem_length) { - /* Byte length would overflow. */ - /* XXX: easier check with less code? */ - goto fail_arguments; - } - - DUK_DDD(DUK_DDDPRINT("elem_length=%ld, byte_length=%ld", (long) elem_length, (long) byte_length)); - - /* ArrayBuffer argument is handled specially above; the rest of the - * argument variants are handled by shared code below. - * - * ArrayBuffer in h_bufobj->buf_prop is intentionally left unset. - * It will be automatically created by the .buffer accessor on - * first access. - */ - - /* Push the resulting view object on top of a plain fixed buffer. */ - (void) duk_push_fixed_buffer(thr, byte_length); - h_val = duk_known_hbuffer(thr, -1); - DUK_ASSERT(h_val != NULL); - - h_bufobj = - duk_push_bufobj_raw(thr, - DUK_HOBJECT_FLAG_EXTENSIBLE | DUK_HOBJECT_FLAG_BUFOBJ | DUK_HOBJECT_CLASS_AS_FLAGS(class_num), - (duk_small_int_t) proto_bidx); - - h_bufobj->buf = h_val; - DUK_HBUFFER_INCREF(thr, h_val); - DUK_ASSERT(h_bufobj->offset == 0); - h_bufobj->length = byte_length; - h_bufobj->shift = (duk_uint8_t) shift; - h_bufobj->elem_type = (duk_uint8_t) elem_type; - h_bufobj->is_typedarray = 1; - DUK_HBUFOBJ_ASSERT_VALID(h_bufobj); - - /* Copy values, the copy method depends on the arguments. - * - * Copy mode decision may depend on the validity of the underlying - * buffer of the source argument; there must be no harmful side effects - * from there to here for copy_mode to still be valid. - */ - DUK_DDD(DUK_DDDPRINT("copy mode: %d", (int) copy_mode)); - switch (copy_mode) { - /* Copy modes 0 and 1 can be omitted in size optimized build, - * copy mode 2 handles them (but more slowly). - */ -#if !defined(DUK_USE_PREFER_SIZE) - case 0: { - /* Use byte copy. */ - - duk_uint8_t *p_src; - duk_uint8_t *p_dst; - - DUK_ASSERT(h_bufobj != NULL); - DUK_ASSERT(h_bufobj->buf != NULL); - DUK_ASSERT(DUK_HBUFOBJ_VALID_SLICE(h_bufobj)); - DUK_ASSERT(h_bufarg != NULL); - DUK_ASSERT(h_bufarg->buf != NULL); - DUK_ASSERT(DUK_HBUFOBJ_VALID_SLICE(h_bufarg)); - - p_dst = DUK_HBUFOBJ_GET_SLICE_BASE(thr->heap, h_bufobj); - p_src = DUK_HBUFOBJ_GET_SLICE_BASE(thr->heap, h_bufarg); - - DUK_DDD(DUK_DDDPRINT("using memcpy: p_src=%p, p_dst=%p, byte_length=%ld", - (void *) p_src, - (void *) p_dst, - (long) byte_length)); - - duk_memcpy_unsafe((void *) p_dst, (const void *) p_src, (size_t) byte_length); - break; - } - case 1: { - /* Copy values through direct validated reads and writes. */ - - duk_small_uint_t src_elem_size; - duk_small_uint_t dst_elem_size; - duk_uint8_t *p_src; - duk_uint8_t *p_src_end; - duk_uint8_t *p_dst; - - DUK_ASSERT(h_bufobj != NULL); - DUK_ASSERT(h_bufobj->buf != NULL); - DUK_ASSERT(DUK_HBUFOBJ_VALID_SLICE(h_bufobj)); - DUK_ASSERT(h_bufarg != NULL); - DUK_ASSERT(h_bufarg->buf != NULL); - DUK_ASSERT(DUK_HBUFOBJ_VALID_SLICE(h_bufarg)); - - src_elem_size = (duk_small_uint_t) (1U << h_bufarg->shift); - dst_elem_size = elem_size; - - p_src = DUK_HBUFOBJ_GET_SLICE_BASE(thr->heap, h_bufarg); - p_dst = DUK_HBUFOBJ_GET_SLICE_BASE(thr->heap, h_bufobj); - p_src_end = p_src + h_bufarg->length; - - DUK_DDD(DUK_DDDPRINT("using fast copy: p_src=%p, p_src_end=%p, p_dst=%p, " - "src_elem_size=%d, dst_elem_size=%d", - (void *) p_src, - (void *) p_src_end, - (void *) p_dst, - (int) src_elem_size, - (int) dst_elem_size)); - - while (p_src != p_src_end) { - DUK_DDD(DUK_DDDPRINT("fast path per element copy loop: " - "p_src=%p, p_src_end=%p, p_dst=%p", - (void *) p_src, - (void *) p_src_end, - (void *) p_dst)); - /* A validated read() is always a number, so it's write coercion - * is always side effect free an won't invalidate pointers etc. - */ - duk_hbufobj_push_validated_read(thr, h_bufarg, p_src, src_elem_size); - duk_hbufobj_validated_write(thr, h_bufobj, p_dst, dst_elem_size); - duk_pop(thr); - p_src += src_elem_size; - p_dst += dst_elem_size; - } - break; - } -#endif /* !DUK_USE_PREFER_SIZE */ - case 2: { - /* Copy values by index reads and writes. Let virtual - * property handling take care of coercion. - */ - duk_uint_t i; - - DUK_DDD(DUK_DDDPRINT("using slow copy")); - - for (i = 0; i < elem_length; i++) { - duk_get_prop_index(thr, 0, (duk_uarridx_t) i); - duk_put_prop_index(thr, -2, (duk_uarridx_t) i); - } - break; - } - default: - case 3: { - /* No copy, leave zero bytes in the buffer. There's no - * ambiguity with Float32/Float64 because zero bytes also - * represent 0.0. - */ - - DUK_DDD(DUK_DDDPRINT("using no copy")); - break; - } - } - - return 1; - -fail_arguments: - DUK_DCERROR_RANGE_INVALID_ARGS(thr); -} -#else /* DUK_USE_BUFFEROBJECT_SUPPORT */ -/* When bufferobject support is disabled, new Uint8Array() could still be - * supported to create a plain fixed buffer. Disabled for now. - */ -#if 0 -DUK_INTERNAL duk_ret_t duk_bi_typedarray_constructor(duk_hthread *thr) { - duk_int_t elem_length_signed; - duk_uint_t byte_length; - - /* XXX: The same copy helpers could be shared with at least some - * buffer functions. - */ - - duk_require_constructor_call(thr); - - elem_length_signed = duk_require_int(thr, 0); - if (elem_length_signed < 0) { - goto fail_arguments; - } - byte_length = (duk_uint_t) elem_length_signed; - - (void) duk_push_fixed_buffer_zero(thr, (duk_size_t) byte_length); - return 1; - - fail_arguments: - DUK_DCERROR_RANGE_INVALID_ARGS(thr); -} -#endif /* 0 */ -#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ - -#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) -DUK_INTERNAL duk_ret_t duk_bi_dataview_constructor(duk_hthread *thr) { - duk_hbufobj *h_bufarg; - duk_hbufobj *h_bufobj; - duk_hbuffer *h_val; - duk_uint_t offset; - duk_uint_t length; - - duk_require_constructor_call(thr); - - h_bufarg = duk__require_bufobj_value(thr, 0); - DUK_ASSERT(h_bufarg != NULL); - if (DUK_HOBJECT_GET_CLASS_NUMBER((duk_hobject *) h_bufarg) != DUK_HOBJECT_CLASS_ARRAYBUFFER) { - DUK_DCERROR_TYPE_INVALID_ARGS(thr); - } - - duk__resolve_offset_opt_length(thr, h_bufarg, 1, 2, &offset, &length, 1 /*throw_flag*/); - DUK_ASSERT(offset <= h_bufarg->length); - DUK_ASSERT(offset + length <= h_bufarg->length); - - h_bufobj = duk_push_bufobj_raw(thr, - DUK_HOBJECT_FLAG_EXTENSIBLE | DUK_HOBJECT_FLAG_BUFOBJ | - DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_DATAVIEW), - DUK_BIDX_DATAVIEW_PROTOTYPE); - - h_val = h_bufarg->buf; - if (h_val == NULL) { - DUK_DCERROR_TYPE_INVALID_ARGS(thr); - } - h_bufobj->buf = h_val; - DUK_HBUFFER_INCREF(thr, h_val); - h_bufobj->offset = h_bufarg->offset + offset; - h_bufobj->length = length; - DUK_ASSERT(h_bufobj->shift == 0); - DUK_ASSERT(h_bufobj->elem_type == DUK_HBUFOBJ_ELEM_UINT8); - DUK_ASSERT(h_bufobj->is_typedarray == 0); - - DUK_ASSERT(h_bufobj->buf_prop == NULL); - h_bufobj->buf_prop = (duk_hobject *) h_bufarg; - DUK_ASSERT(h_bufarg != NULL); - DUK_HBUFOBJ_INCREF(thr, h_bufarg); - - DUK_HBUFOBJ_ASSERT_VALID(h_bufobj); - return 1; -} -#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ - -/* - * ArrayBuffer.isView() - */ - -#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) -DUK_INTERNAL duk_ret_t duk_bi_arraybuffer_isview(duk_hthread *thr) { - duk_hobject *h_obj; - duk_bool_t ret = 0; - - if (duk_is_buffer(thr, 0)) { - ret = 1; - } else { - h_obj = duk_get_hobject(thr, 0); - if (h_obj != NULL && DUK_HOBJECT_IS_BUFOBJ(h_obj)) { - /* DataView needs special casing: ArrayBuffer.isView() is - * true, but ->is_typedarray is 0. - */ - ret = ((duk_hbufobj *) h_obj)->is_typedarray || - (DUK_HOBJECT_GET_CLASS_NUMBER(h_obj) == DUK_HOBJECT_CLASS_DATAVIEW); - } - } - duk_push_boolean(thr, ret); - return 1; -} -#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ - -/* - * Uint8Array.allocPlain() - */ - -#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) -DUK_INTERNAL duk_ret_t duk_bi_uint8array_allocplain(duk_hthread *thr) { - duk__hbufobj_fixed_from_argvalue(thr); - return 1; -} -#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ - -/* - * Uint8Array.plainOf() - */ - -#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) -DUK_INTERNAL duk_ret_t duk_bi_uint8array_plainof(duk_hthread *thr) { - duk_hbufobj *h_bufobj; - -#if !defined(DUK_USE_PREFER_SIZE) - /* Avoid churn if argument is already a plain buffer. */ - if (duk_is_buffer(thr, 0)) { - return 1; - } -#endif - - /* Promotes plain buffers to ArrayBuffers, so for a plain buffer - * argument we'll create a pointless temporary (but still work - * correctly). - */ - h_bufobj = duk__require_bufobj_value(thr, 0); - if (h_bufobj->buf == NULL) { - duk_push_undefined(thr); - } else { - duk_push_hbuffer(thr, h_bufobj->buf); - } - return 1; -} -#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ - -/* - * Node.js Buffer: toString([encoding], [start], [end]) - */ - -#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) -DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_tostring(duk_hthread *thr) { - duk_hbufobj *h_this; - duk_int_t start_offset, end_offset; - duk_uint8_t *buf_slice; - duk_size_t slice_length; - - h_this = duk__get_bufobj_this(thr); - if (h_this == NULL) { - /* XXX: happens e.g. when evaluating: String(Buffer.prototype). */ - duk_push_literal(thr, "[object Object]"); - return 1; - } - DUK_HBUFOBJ_ASSERT_VALID(h_this); - - /* Ignore encoding for now. */ - - duk__clamp_startend_nonegidx_noshift(thr, - (duk_int_t) h_this->length, - 1 /*idx_start*/, - 2 /*idx_end*/, - &start_offset, - &end_offset); - - slice_length = (duk_size_t) (end_offset - start_offset); - buf_slice = (duk_uint8_t *) duk_push_fixed_buffer_nozero(thr, slice_length); /* all bytes initialized below */ - DUK_ASSERT(buf_slice != NULL); - - /* Neutered or uncovered, TypeError. */ - if (h_this->buf == NULL || !DUK_HBUFOBJ_VALID_BYTEOFFSET_EXCL(h_this, (duk_size_t) start_offset + slice_length)) { - DUK_DCERROR_TYPE_INVALID_ARGS(thr); - } - - /* XXX: ideally we wouldn't make a copy but a view into the buffer for the - * decoding process. Or the decoding helper could be changed to accept - * the slice info (a buffer pointer is NOT a good approach because guaranteeing - * its stability is difficult). - */ - - DUK_ASSERT(DUK_HBUFOBJ_VALID_BYTEOFFSET_EXCL(h_this, (duk_size_t) start_offset + slice_length)); - duk_memcpy_unsafe((void *) buf_slice, - (const void *) (DUK_HBUFOBJ_GET_SLICE_BASE(thr->heap, h_this) + start_offset), - (size_t) slice_length); - - /* Use the equivalent of: new TextEncoder().encode(this) to convert the - * string. Result will be valid UTF-8; non-CESU-8 inputs are currently - * interpreted loosely. Value stack convention is a bit odd for now. - */ - duk_replace(thr, 0); - duk_set_top(thr, 1); - return duk_textdecoder_decode_utf8_nodejs(thr); -} -#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ - -/* - * Node.js Buffer.prototype: toJSON() - */ - -#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) -DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_tojson(duk_hthread *thr) { - duk_hbufobj *h_this; - duk_uint8_t *buf; - duk_uint_t i, n; - duk_tval *tv; - - h_this = duk__require_bufobj_this(thr); - DUK_ASSERT(h_this != NULL); - - if (h_this->buf == NULL || !DUK_HBUFOBJ_VALID_SLICE(h_this)) { - /* Serialize uncovered backing buffer as a null; doesn't - * really matter as long we're memory safe. - */ - duk_push_null(thr); - return 1; - } - - duk_push_object(thr); - duk_push_hstring_stridx(thr, DUK_STRIDX_UC_BUFFER); - duk_put_prop_stridx_short(thr, -2, DUK_STRIDX_TYPE); - - /* XXX: uninitialized would be OK */ - DUK_ASSERT_DISABLE((duk_size_t) h_this->length <= (duk_size_t) DUK_UINT32_MAX); - tv = duk_push_harray_with_size_outptr(thr, (duk_uint32_t) h_this->length); /* XXX: needs revision with >4G buffers */ - DUK_ASSERT(!duk_is_bare_object(thr, -1)); - - DUK_ASSERT(h_this->buf != NULL); - buf = DUK_HBUFOBJ_GET_SLICE_BASE(thr->heap, h_this); - for (i = 0, n = h_this->length; i < n; i++) { - DUK_TVAL_SET_U32(tv + i, (duk_uint32_t) buf[i]); /* no need for decref or incref */ - } - duk_put_prop_stridx_short(thr, -2, DUK_STRIDX_DATA); - - return 1; -} -#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ - -/* - * Node.js Buffer.prototype.equals() - * Node.js Buffer.prototype.compare() - * Node.js Buffer.compare() - */ - -#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) -DUK_INTERNAL duk_ret_t duk_bi_buffer_compare_shared(duk_hthread *thr) { - duk_small_uint_t magic; - duk_hbufobj *h_bufarg1; - duk_hbufobj *h_bufarg2; - duk_small_int_t comp_res; - - /* XXX: keep support for plain buffers and non-Node.js buffers? */ - - magic = (duk_small_uint_t) duk_get_current_magic(thr); - if (magic & 0x02U) { - /* Static call style. */ - h_bufarg1 = duk__require_bufobj_value(thr, 0); - h_bufarg2 = duk__require_bufobj_value(thr, 1); - } else { - h_bufarg1 = duk__require_bufobj_this(thr); - h_bufarg2 = duk__require_bufobj_value(thr, 0); - } - DUK_ASSERT(h_bufarg1 != NULL); - DUK_ASSERT(h_bufarg2 != NULL); - - /* We want to compare the slice/view areas of the arguments. - * If either slice/view is invalid (underlying buffer is shorter) - * ensure equals() is false, but otherwise the only thing that - * matters is to be memory safe. - */ - - if (DUK_HBUFOBJ_VALID_SLICE(h_bufarg1) && DUK_HBUFOBJ_VALID_SLICE(h_bufarg2)) { - comp_res = duk_js_data_compare( - (const duk_uint8_t *) DUK_HBUFFER_GET_DATA_PTR(thr->heap, h_bufarg1->buf) + h_bufarg1->offset, - (const duk_uint8_t *) DUK_HBUFFER_GET_DATA_PTR(thr->heap, h_bufarg2->buf) + h_bufarg2->offset, - (duk_size_t) h_bufarg1->length, - (duk_size_t) h_bufarg2->length); - } else { - comp_res = -1; /* either nonzero value is ok */ - } - - if (magic & 0x01U) { - /* compare: similar to string comparison but for buffer data. */ - duk_push_int(thr, comp_res); - } else { - /* equals */ - duk_push_boolean(thr, (comp_res == 0)); - } - - return 1; -} -#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ - -/* - * Node.js Buffer.prototype.fill() - */ - -#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) -DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_fill(duk_hthread *thr) { - duk_hbufobj *h_this; - const duk_uint8_t *fill_str_ptr; - duk_size_t fill_str_len; - duk_uint8_t fill_value; - duk_int_t fill_offset; - duk_int_t fill_end; - duk_size_t fill_length; - duk_uint8_t *p; - - h_this = duk__require_bufobj_this(thr); - DUK_ASSERT(h_this != NULL); - if (h_this->buf == NULL) { - DUK_DCERROR_TYPE_INVALID_ARGS(thr); - } - - /* [ value offset end ] */ - - if (duk_is_string_notsymbol(thr, 0)) { - fill_str_ptr = (const duk_uint8_t *) duk_get_lstring(thr, 0, &fill_str_len); - DUK_ASSERT(fill_str_ptr != NULL); - } else { - /* Symbols get ToNumber() coerced and cause TypeError. */ - fill_value = (duk_uint8_t) duk_to_uint32(thr, 0); - fill_str_ptr = (const duk_uint8_t *) &fill_value; - fill_str_len = 1; - } - - /* Fill offset handling is more lenient than in Node.js. */ - - duk__clamp_startend_nonegidx_noshift(thr, - (duk_int_t) h_this->length, - 1 /*idx_start*/, - 2 /*idx_end*/, - &fill_offset, - &fill_end); - - DUK_DDD(DUK_DDDPRINT("fill: fill_value=%02x, fill_offset=%ld, fill_end=%ld, view length=%ld", - (unsigned int) fill_value, - (long) fill_offset, - (long) fill_end, - (long) h_this->length)); - - DUK_ASSERT(fill_end - fill_offset >= 0); - DUK_ASSERT(h_this->buf != NULL); - - p = (DUK_HBUFOBJ_GET_SLICE_BASE(thr->heap, h_this) + fill_offset); - fill_length = (duk_size_t) (fill_end - fill_offset); - if (fill_str_len == 1) { - /* Handle single character fills as memset() even when - * the fill data comes from a one-char argument. - */ - duk_memset_unsafe((void *) p, (int) fill_str_ptr[0], (size_t) fill_length); - } else if (fill_str_len > 1) { - duk_size_t i, n, t; - - for (i = 0, n = (duk_size_t) (fill_end - fill_offset), t = 0; i < n; i++) { - p[i] = fill_str_ptr[t++]; - if (t >= fill_str_len) { - t = 0; - } - } - } else { - DUK_DDD(DUK_DDDPRINT("zero size fill pattern, ignore silently")); - } - - /* Return the Buffer to allow chaining: b.fill(0x11).fill(0x22, 3, 5).toString() */ - duk_push_this(thr); - return 1; -} -#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ - -/* - * Node.js Buffer.prototype.write(string, [offset], [length], [encoding]) - */ - -#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) -DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_write(duk_hthread *thr) { - duk_hbufobj *h_this; - duk_uint_t offset; - duk_uint_t length; - const duk_uint8_t *str_data; - duk_size_t str_len; - - /* XXX: very inefficient support for plain buffers */ - h_this = duk__require_bufobj_this(thr); - DUK_ASSERT(h_this != NULL); - - /* Argument must be a string, e.g. a buffer is not allowed. */ - str_data = (const duk_uint8_t *) duk_require_lstring_notsymbol(thr, 0, &str_len); - - duk__resolve_offset_opt_length(thr, h_this, 1, 2, &offset, &length, 0 /*throw_flag*/); - DUK_ASSERT(offset <= h_this->length); - DUK_ASSERT(offset + length <= h_this->length); - - /* XXX: encoding is ignored now. */ - - if (length > str_len) { - length = (duk_uint_t) str_len; - } - - if (DUK_HBUFOBJ_VALID_SLICE(h_this)) { - /* Cannot overlap. */ - duk_memcpy_unsafe((void *) (DUK_HBUFOBJ_GET_SLICE_BASE(thr->heap, h_this) + offset), - (const void *) str_data, - (size_t) length); - } else { - DUK_DDD(DUK_DDDPRINT("write() target buffer is not covered, silent ignore")); - } - - duk_push_uint(thr, length); - return 1; -} -#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ - -/* - * Node.js Buffer.prototype.copy() - */ - -#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) -DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_copy(duk_hthread *thr) { - duk_hbufobj *h_this; - duk_hbufobj *h_bufarg; - duk_int_t source_length; - duk_int_t target_length; - duk_int_t target_start, source_start, source_end; - duk_uint_t target_ustart, source_ustart, source_uend; - duk_uint_t copy_size = 0; - - /* [ targetBuffer targetStart sourceStart sourceEnd ] */ - - h_this = duk__require_bufobj_this(thr); - h_bufarg = duk__require_bufobj_value(thr, 0); - DUK_ASSERT(h_this != NULL); - DUK_ASSERT(h_bufarg != NULL); - source_length = (duk_int_t) h_this->length; - target_length = (duk_int_t) h_bufarg->length; - - target_start = duk_to_int(thr, 1); - source_start = duk_to_int(thr, 2); - if (duk_is_undefined(thr, 3)) { - source_end = source_length; - } else { - source_end = duk_to_int(thr, 3); - } - - DUK_DDD(DUK_DDDPRINT("checking copy args: target_start=%ld, target_length=%ld, " - "source_start=%ld, source_end=%ld, source_length=%ld", - (long) target_start, - (long) h_bufarg->length, - (long) source_start, - (long) source_end, - (long) source_length)); - - /* This behavior mostly mimics Node.js now. */ - - if (source_start < 0 || source_end < 0 || target_start < 0) { - /* Negative offsets cause a RangeError. */ - goto fail_bounds; - } - source_ustart = (duk_uint_t) source_start; - source_uend = (duk_uint_t) source_end; - target_ustart = (duk_uint_t) target_start; - if (source_ustart >= source_uend || /* crossed offsets or zero size */ - source_ustart >= (duk_uint_t) source_length || /* source out-of-bounds (but positive) */ - target_ustart >= (duk_uint_t) target_length) { /* target out-of-bounds (but positive) */ - goto silent_ignore; - } - if (source_uend >= (duk_uint_t) source_length) { - /* Source end clamped silently to available length. */ - source_uend = (duk_uint_t) source_length; - } - copy_size = source_uend - source_ustart; - if (target_ustart + copy_size > (duk_uint_t) target_length) { - /* Clamp to target's end if too long. - * - * NOTE: there's no overflow possibility in the comparison; - * both target_ustart and copy_size are >= 0 and based on - * values in duk_int_t range. Adding them as duk_uint_t - * values is then guaranteed not to overflow. - */ - DUK_ASSERT(target_ustart + copy_size >= target_ustart); /* no overflow */ - DUK_ASSERT(target_ustart + copy_size >= copy_size); /* no overflow */ - copy_size = (duk_uint_t) target_length - target_ustart; - } - - DUK_DDD(DUK_DDDPRINT("making copy: target_ustart=%lu source_ustart=%lu copy_size=%lu", - (unsigned long) target_ustart, - (unsigned long) source_ustart, - (unsigned long) copy_size)); - - DUK_ASSERT(copy_size >= 1); - DUK_ASSERT(source_ustart <= (duk_uint_t) source_length); - DUK_ASSERT(source_ustart + copy_size <= (duk_uint_t) source_length); - DUK_ASSERT(target_ustart <= (duk_uint_t) target_length); - DUK_ASSERT(target_ustart + copy_size <= (duk_uint_t) target_length); - - /* Ensure copy is covered by underlying buffers. */ - DUK_ASSERT(h_bufarg->buf != NULL); /* length check */ - DUK_ASSERT(h_this->buf != NULL); /* length check */ - if (DUK_HBUFOBJ_VALID_BYTEOFFSET_EXCL(h_bufarg, target_ustart + copy_size) && - DUK_HBUFOBJ_VALID_BYTEOFFSET_EXCL(h_this, source_ustart + copy_size)) { - /* Must use memmove() because copy area may overlap (source and target - * buffer may be the same, or from different slices. - */ - duk_memmove_unsafe((void *) (DUK_HBUFOBJ_GET_SLICE_BASE(thr->heap, h_bufarg) + target_ustart), - (const void *) (DUK_HBUFOBJ_GET_SLICE_BASE(thr->heap, h_this) + source_ustart), - (size_t) copy_size); - } else { - DUK_DDD(DUK_DDDPRINT("buffer copy not covered by underlying buffer(s), ignoring")); - } - -silent_ignore: - /* Return value is like write(), number of bytes written. - * The return value matters because of code like: - * "off += buf.copy(...)". - */ - duk_push_uint(thr, copy_size); - return 1; - -fail_bounds: - DUK_DCERROR_RANGE_INVALID_ARGS(thr); -} -#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ - -/* - * TypedArray.prototype.set() - * - * TypedArray set() is pretty interesting to implement because: - * - * - The source argument may be a plain array or a typedarray. If the - * source is a TypedArray, values are decoded and re-encoded into the - * target (not as a plain byte copy). This may happen even when the - * element byte size is the same, e.g. integer values may be re-encoded - * into floats. - * - * - Source and target may refer to the same underlying buffer, so that - * the set() operation may overlap. The specification requires that this - * must work as if a copy was made before the operation. Note that this - * is NOT a simple memmove() situation because the source and target - * byte sizes may be different -- e.g. a 4-byte source (Int8Array) may - * expand to a 16-byte target (Uint32Array) so that the target overlaps - * the source both from beginning and the end (unlike in typical memmove). - * - * - Even if 'buf' pointers of the source and target differ, there's no - * guarantee that their memory areas don't overlap. This may be the - * case with external buffers. - * - * Even so, it is nice to optimize for the common case: - * - * - Source and target separate buffers or non-overlapping. - * - * - Source and target have a compatible type so that a plain byte copy - * is possible. Note that while e.g. uint8 and int8 are compatible - * (coercion one way or another doesn't change the byte representation), - * e.g. int8 and uint8clamped are NOT compatible when writing int8 - * values into uint8clamped typedarray (-1 would clamp to 0 for instance). - * - * See test-bi-typedarray-proto-set.js. - */ - -#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) -DUK_INTERNAL duk_ret_t duk_bi_typedarray_set(duk_hthread *thr) { - duk_hbufobj *h_this; - duk_hobject *h_obj; - duk_uarridx_t i, n; - duk_int_t offset_signed; - duk_uint_t offset_elems; - duk_uint_t offset_bytes; - - h_this = duk__require_bufobj_this(thr); - DUK_ASSERT(h_this != NULL); - DUK_HBUFOBJ_ASSERT_VALID(h_this); - - if (h_this->buf == NULL) { - DUK_DDD(DUK_DDDPRINT("source neutered, skip copy")); - return 0; - } - - duk_hbufobj_promote_plain(thr, 0); - h_obj = duk_require_hobject(thr, 0); - - /* XXX: V8 throws a TypeError for negative values. Would it - * be more useful to interpret negative offsets here from the - * end of the buffer too? - */ - offset_signed = duk_to_int(thr, 1); - if (offset_signed < 0) { - /* For some reason this is a TypeError (at least in V8). */ - DUK_DCERROR_TYPE_INVALID_ARGS(thr); - } - offset_elems = (duk_uint_t) offset_signed; - offset_bytes = offset_elems << h_this->shift; - if ((offset_bytes >> h_this->shift) != offset_elems) { - /* Byte length would overflow. */ - /* XXX: easier check with less code? */ - goto fail_args; - } - if (offset_bytes > h_this->length) { - /* Equality may be OK but >length not. Checking - * this explicitly avoids some overflow cases - * below. - */ - goto fail_args; - } - DUK_ASSERT(offset_bytes <= h_this->length); - - /* Fast path: source is a TypedArray (or any bufobj). */ - - if (DUK_HOBJECT_IS_BUFOBJ(h_obj)) { - duk_hbufobj *h_bufarg; -#if !defined(DUK_USE_PREFER_SIZE) - duk_uint16_t comp_mask; -#endif - duk_small_int_t no_overlap = 0; - duk_uint_t src_length; - duk_uint_t dst_length; - duk_uint_t dst_length_elems; - duk_uint8_t *p_src_base; - duk_uint8_t *p_src_end; - duk_uint8_t *p_src; - duk_uint8_t *p_dst_base; - duk_uint8_t *p_dst; - duk_small_uint_t src_elem_size; - duk_small_uint_t dst_elem_size; - - h_bufarg = (duk_hbufobj *) h_obj; - DUK_HBUFOBJ_ASSERT_VALID(h_bufarg); - - if (h_bufarg->buf == NULL) { - DUK_DDD(DUK_DDDPRINT("target neutered, skip copy")); - return 0; - } - - /* Nominal size check. */ - src_length = h_bufarg->length; /* bytes in source */ - dst_length_elems = (src_length >> h_bufarg->shift); /* elems in source and dest */ - dst_length = dst_length_elems << h_this->shift; /* bytes in dest */ - if ((dst_length >> h_this->shift) != dst_length_elems) { - /* Byte length would overflow. */ - /* XXX: easier check with less code? */ - goto fail_args; - } - DUK_DDD(DUK_DDDPRINT("nominal size check: src_length=%ld, dst_length=%ld", (long) src_length, (long) dst_length)); - DUK_ASSERT(offset_bytes <= h_this->length); - if (dst_length > h_this->length - offset_bytes) { - /* Overflow not an issue because subtraction is used on the right - * side and guaranteed to be >= 0. - */ - DUK_DDD(DUK_DDDPRINT("copy exceeds target buffer nominal length")); - goto fail_args; - } - if (!DUK_HBUFOBJ_VALID_BYTEOFFSET_EXCL(h_this, offset_bytes + dst_length)) { - DUK_DDD(DUK_DDDPRINT("copy not covered by underlying target buffer, ignore")); - return 0; - } - - p_src_base = DUK_HBUFOBJ_GET_SLICE_BASE(thr->heap, h_bufarg); - p_dst_base = DUK_HBUFOBJ_GET_SLICE_BASE(thr->heap, h_this) + offset_bytes; - - /* Check actual underlying buffers for validity and that they - * cover the copy. No side effects are allowed after the check - * so that the validity status doesn't change. - */ - if (!DUK_HBUFOBJ_VALID_SLICE(h_this) || !DUK_HBUFOBJ_VALID_SLICE(h_bufarg)) { - /* The condition could be more narrow and check for the - * copy area only, but there's no need for fine grained - * behavior when the underlying buffer is misconfigured. - */ - DUK_DDD(DUK_DDDPRINT("source and/or target not covered by underlying buffer, skip copy")); - return 0; - } - - /* We want to do a straight memory copy if possible: this is - * an important operation because .set() is the TypedArray - * way to copy chunks of memory. However, because set() - * conceptually works in terms of elements, not all views are - * compatible with direct byte copying. - * - * If we do manage a direct copy, the "overlap issue" handled - * below can just be solved using memmove() because the source - * and destination element sizes are necessarily equal. - */ - -#if !defined(DUK_USE_PREFER_SIZE) - DUK_ASSERT(h_this->elem_type < sizeof(duk__buffer_elemtype_copy_compatible) / sizeof(duk_uint16_t)); - comp_mask = duk__buffer_elemtype_copy_compatible[h_this->elem_type]; - if (comp_mask & (1 << h_bufarg->elem_type)) { - DUK_ASSERT(src_length == dst_length); - - DUK_DDD(DUK_DDDPRINT("fast path: able to use memmove() because views are compatible")); - duk_memmove_unsafe((void *) p_dst_base, (const void *) p_src_base, (size_t) dst_length); - return 0; - } - DUK_DDD(DUK_DDDPRINT("fast path: views are not compatible with a byte copy, copy by item")); -#endif /* !DUK_USE_PREFER_SIZE */ - - /* We want to avoid making a copy to process set() but that's - * not always possible: the source and the target may overlap - * and because element sizes are different, the overlap cannot - * always be handled with a memmove() or choosing the copy - * direction in a certain way. For example, if source type is - * uint8 and target type is uint32, the target area may exceed - * the source area from both ends! - * - * Note that because external buffers may point to the same - * memory areas, we must ultimately make this check using - * pointers. - * - * NOTE: careful with side effects: any side effect may cause - * a buffer resize (or external buffer pointer/length update)! - */ - - DUK_DDD(DUK_DDDPRINT("overlap check: p_src_base=%p, src_length=%ld, " - "p_dst_base=%p, dst_length=%ld", - (void *) p_src_base, - (long) src_length, - (void *) p_dst_base, - (long) dst_length)); - - if (p_src_base >= p_dst_base + dst_length || /* source starts after dest ends */ - p_src_base + src_length <= p_dst_base) { /* source ends before dest starts */ - no_overlap = 1; - } - - if (!no_overlap) { - /* There's overlap: the desired end result is that - * conceptually a copy is made to avoid "trampling" - * of source data by destination writes. We make - * an actual temporary copy to handle this case. - */ - duk_uint8_t *p_src_copy; - - DUK_DDD(DUK_DDDPRINT("there is overlap, make a copy of the source")); - p_src_copy = (duk_uint8_t *) duk_push_fixed_buffer_nozero(thr, src_length); - DUK_ASSERT(p_src_copy != NULL); - duk_memcpy_unsafe((void *) p_src_copy, (const void *) p_src_base, (size_t) src_length); - - p_src_base = p_src_copy; /* use p_src_base from now on */ - } - /* Value stack intentionally mixed size here. */ - - DUK_DDD(DUK_DDDPRINT("after overlap check: p_src_base=%p, src_length=%ld, " - "p_dst_base=%p, dst_length=%ld, valstack top=%ld", - (void *) p_src_base, - (long) src_length, - (void *) p_dst_base, - (long) dst_length, - (long) duk_get_top(thr))); - - /* Ready to make the copy. We must proceed element by element - * and must avoid any side effects that might cause the buffer - * validity check above to become invalid. - * - * Although we work through the value stack here, only plain - * numbers are handled which should be side effect safe. - */ - - src_elem_size = (duk_small_uint_t) (1U << h_bufarg->shift); - dst_elem_size = (duk_small_uint_t) (1U << h_this->shift); - p_src = p_src_base; - p_dst = p_dst_base; - p_src_end = p_src_base + src_length; - - while (p_src != p_src_end) { - DUK_DDD(DUK_DDDPRINT("fast path per element copy loop: " - "p_src=%p, p_src_end=%p, p_dst=%p", - (void *) p_src, - (void *) p_src_end, - (void *) p_dst)); - /* A validated read() is always a number, so it's write coercion - * is always side effect free an won't invalidate pointers etc. - */ - duk_hbufobj_push_validated_read(thr, h_bufarg, p_src, src_elem_size); - duk_hbufobj_validated_write(thr, h_this, p_dst, dst_elem_size); - duk_pop(thr); - p_src += src_elem_size; - p_dst += dst_elem_size; - } - - return 0; - } else { - /* Slow path: quite slow, but we save space by using the property code - * to write coerce target values. We don't need to worry about overlap - * here because the source is not a TypedArray. - * - * We could use the bufobj write coercion helper but since the - * property read may have arbitrary side effects, full validity checks - * would be needed for every element anyway. - */ - - n = (duk_uarridx_t) duk_get_length(thr, 0); - DUK_ASSERT(offset_bytes <= h_this->length); - if ((n << h_this->shift) > h_this->length - offset_bytes) { - /* Overflow not an issue because subtraction is used on the right - * side and guaranteed to be >= 0. - */ - DUK_DDD(DUK_DDDPRINT("copy exceeds target buffer nominal length")); - goto fail_args; - } - - /* There's no need to check for buffer validity status for the - * target here: the property access code will do that for each - * element. Moreover, if we did check the validity here, side - * effects from reading the source argument might invalidate - * the results anyway. - */ - - DUK_ASSERT_TOP(thr, 2); - duk_push_this(thr); - - for (i = 0; i < n; i++) { - duk_get_prop_index(thr, 0, i); - duk_put_prop_index(thr, 2, offset_elems + i); - } - } - - return 0; - -fail_args: - DUK_DCERROR_RANGE_INVALID_ARGS(thr); -} -#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ - -/* - * Node.js Buffer.prototype.slice([start], [end]) - * ArrayBuffer.prototype.slice(begin, [end]) - * TypedArray.prototype.subarray(begin, [end]) - * - * The API calls are almost identical; negative indices are counted from end - * of buffer, and final indices are clamped (allowing crossed indices). Main - * differences: - * - * - Copy/view behavior; Node.js .slice() and TypedArray .subarray() create - * views, ArrayBuffer .slice() creates a copy - * - * - Resulting object has a different class and prototype depending on the - * call (or 'this' argument) - * - * - TypedArray .subarray() arguments are element indices, not byte offsets - * - * - Plain buffer argument creates a plain buffer slice - */ - -#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) -DUK_LOCAL void duk__arraybuffer_plain_slice(duk_hthread *thr, duk_hbuffer *h_val) { - duk_int_t start_offset, end_offset; - duk_uint_t slice_length; - duk_uint8_t *p_copy; - duk_size_t copy_length; - - duk__clamp_startend_negidx_shifted(thr, - (duk_int_t) DUK_HBUFFER_GET_SIZE(h_val), - 0 /*buffer_shift*/, - 0 /*idx_start*/, - 1 /*idx_end*/, - &start_offset, - &end_offset); - DUK_ASSERT(end_offset <= (duk_int_t) DUK_HBUFFER_GET_SIZE(h_val)); - DUK_ASSERT(start_offset >= 0); - DUK_ASSERT(end_offset >= start_offset); - slice_length = (duk_uint_t) (end_offset - start_offset); - - p_copy = (duk_uint8_t *) duk_push_fixed_buffer_nozero(thr, (duk_size_t) slice_length); - DUK_ASSERT(p_copy != NULL); - copy_length = slice_length; - - duk_memcpy_unsafe((void *) p_copy, - (const void *) ((duk_uint8_t *) DUK_HBUFFER_GET_DATA_PTR(thr->heap, h_val) + start_offset), - copy_length); -} -#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ - -#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) -/* Shared helper for slice/subarray operation. - * Magic: 0x01=isView, 0x02=copy, 0x04=Node.js Buffer special handling. - */ -DUK_INTERNAL duk_ret_t duk_bi_buffer_slice_shared(duk_hthread *thr) { - duk_small_int_t magic; - duk_small_uint_t res_class_num; - duk_small_int_t res_proto_bidx; - duk_hbufobj *h_this; - duk_hbufobj *h_bufobj; - duk_hbuffer *h_val; - duk_int_t start_offset, end_offset; - duk_uint_t slice_length; - duk_tval *tv; - - /* [ start end ] */ - - magic = duk_get_current_magic(thr); - - tv = duk_get_borrowed_this_tval(thr); - DUK_ASSERT(tv != NULL); - - if (DUK_TVAL_IS_BUFFER(tv)) { - /* For plain buffers return a plain buffer slice. */ - h_val = DUK_TVAL_GET_BUFFER(tv); - DUK_ASSERT(h_val != NULL); - - if (magic & 0x02) { - /* Make copy: ArrayBuffer.prototype.slice() uses this. */ - duk__arraybuffer_plain_slice(thr, h_val); - return 1; - } else { - /* View into existing buffer: cannot be done if the - * result is a plain buffer because there's no slice - * info. So return an ArrayBuffer instance; coerce - * the 'this' binding into an object and behave as if - * the original call was for an Object-coerced plain - * buffer (handled automatically by duk__require_bufobj_this()). - */ - - DUK_DDD(DUK_DDDPRINT("slice() doesn't handle view into plain buffer, coerce 'this' to ArrayBuffer object")); - /* fall through */ - } - } - tv = NULL; /* No longer valid nor needed. */ - - h_this = duk__require_bufobj_this(thr); - - /* Slice offsets are element (not byte) offsets, which only matters - * for TypedArray views, Node.js Buffer and ArrayBuffer have shift - * zero so byte and element offsets are the same. Negative indices - * are counted from end of slice, crossed indices are allowed (and - * result in zero length result), and final values are clamped - * against the current slice. There's intentionally no check - * against the underlying buffer here. - */ - - duk__clamp_startend_negidx_shifted(thr, - (duk_int_t) h_this->length, - (duk_uint8_t) h_this->shift, - 0 /*idx_start*/, - 1 /*idx_end*/, - &start_offset, - &end_offset); - DUK_ASSERT(end_offset >= start_offset); - DUK_ASSERT(start_offset >= 0); - DUK_ASSERT(end_offset >= 0); - slice_length = (duk_uint_t) (end_offset - start_offset); - - /* The resulting buffer object gets the same class and prototype as - * the buffer in 'this', e.g. if the input is a Uint8Array the - * result is a Uint8Array; if the input is a Float32Array, the - * result is a Float32Array. The result internal prototype should - * be the default prototype for the class (e.g. initial value of - * Uint8Array.prototype), not copied from the argument (Duktape 1.x - * did that). - * - * Node.js Buffers have special handling: they're Uint8Arrays as far - * as the internal class is concerned, so the new Buffer should also - * be an Uint8Array but inherit from Buffer.prototype. - */ - res_class_num = DUK_HOBJECT_GET_CLASS_NUMBER((duk_hobject *) h_this); - DUK_ASSERT(res_class_num >= DUK_HOBJECT_CLASS_BUFOBJ_MIN); /* type check guarantees */ - DUK_ASSERT(res_class_num <= DUK_HOBJECT_CLASS_BUFOBJ_MAX); - res_proto_bidx = duk__buffer_proto_from_classnum[res_class_num - DUK_HOBJECT_CLASS_BUFOBJ_MIN]; - if (magic & 0x04) { - res_proto_bidx = DUK_BIDX_NODEJS_BUFFER_PROTOTYPE; - } - h_bufobj = - duk_push_bufobj_raw(thr, - DUK_HOBJECT_FLAG_EXTENSIBLE | DUK_HOBJECT_FLAG_BUFOBJ | DUK_HOBJECT_CLASS_AS_FLAGS(res_class_num), - res_proto_bidx); - DUK_ASSERT(h_bufobj != NULL); - - DUK_ASSERT(h_bufobj->length == 0); - h_bufobj->shift = h_this->shift; /* inherit */ - h_bufobj->elem_type = h_this->elem_type; /* inherit */ - h_bufobj->is_typedarray = magic & 0x01; - DUK_ASSERT(h_bufobj->is_typedarray == 0 || h_bufobj->is_typedarray == 1); - - h_val = h_this->buf; - if (h_val == NULL) { - DUK_DCERROR_TYPE_INVALID_ARGS(thr); - } - - if (magic & 0x02) { - /* non-zero: make copy */ - duk_uint8_t *p_copy; - duk_size_t copy_length; - - p_copy = (duk_uint8_t *) duk_push_fixed_buffer_zero( - thr, - (duk_size_t) slice_length); /* must be zeroed, not all bytes always copied */ - DUK_ASSERT(p_copy != NULL); - - /* Copy slice, respecting underlying buffer limits; remainder - * is left as zero. - */ - copy_length = DUK_HBUFOBJ_CLAMP_BYTELENGTH(h_this, slice_length); - duk_memcpy_unsafe((void *) p_copy, - (const void *) (DUK_HBUFOBJ_GET_SLICE_BASE(thr->heap, h_this) + start_offset), - copy_length); - - h_val = duk_known_hbuffer(thr, -1); - - h_bufobj->buf = h_val; - DUK_HBUFFER_INCREF(thr, h_val); - h_bufobj->length = slice_length; - DUK_ASSERT(h_bufobj->offset == 0); - - duk_pop(thr); /* reachable so pop OK */ - } else { - h_bufobj->buf = h_val; - DUK_HBUFFER_INCREF(thr, h_val); - h_bufobj->length = slice_length; - h_bufobj->offset = h_this->offset + (duk_uint_t) start_offset; - - /* Copy the .buffer property, needed for TypedArray.prototype.subarray(). - * - * XXX: limit copy only for TypedArray classes specifically? - */ - - DUK_ASSERT(h_bufobj->buf_prop == NULL); - h_bufobj->buf_prop = h_this->buf_prop; /* may be NULL */ - DUK_HOBJECT_INCREF_ALLOWNULL(thr, (duk_hobject *) h_bufobj->buf_prop); - } - /* unbalanced stack on purpose */ - - DUK_HBUFOBJ_ASSERT_VALID(h_bufobj); - return 1; -} -#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ - -/* - * Node.js Buffer.isEncoding() - */ - -#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) -DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_is_encoding(duk_hthread *thr) { - const char *encoding; - - /* only accept lowercase 'utf8' now. */ - - encoding = duk_to_string(thr, 0); - DUK_ASSERT(duk_is_string(thr, 0)); /* guaranteed by duk_to_string() */ - duk_push_boolean(thr, DUK_STRCMP(encoding, "utf8") == 0); - return 1; -} -#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ - -/* - * Node.js Buffer.isBuffer() - */ - -#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) -DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_is_buffer(duk_hthread *thr) { - duk_hobject *h; - duk_hobject *h_proto; - duk_bool_t ret = 0; - - DUK_ASSERT(duk_get_top(thr) >= 1); /* nargs */ - h = duk_get_hobject(thr, 0); - if (h != NULL) { - h_proto = thr->builtins[DUK_BIDX_NODEJS_BUFFER_PROTOTYPE]; - DUK_ASSERT(h_proto != NULL); - - h = DUK_HOBJECT_GET_PROTOTYPE(thr->heap, h); - if (h != NULL) { - ret = duk_hobject_prototype_chain_contains(thr, h, h_proto, 0 /*ignore_loop*/); - } - } - - duk_push_boolean(thr, ret); - return 1; -} -#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ - -/* - * Node.js Buffer.byteLength() - */ - -#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) -DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_byte_length(duk_hthread *thr) { - const char *str; - duk_size_t len; - - /* At the moment Buffer() will just use the string bytes as - * is (ignoring encoding), so we return the string length here - * unconditionally. - */ - - /* XXX: to be revised; Old Node.js behavior just coerces any buffer - * values to string: - * $ node - * > Buffer.byteLength(new Uint32Array(10)) - * 20 - * > Buffer.byteLength(new Uint32Array(100)) - * 20 - * (The 20 comes from '[object Uint32Array]'.length - */ - - str = duk_to_lstring(thr, 0, &len); - DUK_UNREF(str); - duk_push_size_t(thr, len); - return 1; -} -#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ - -/* - * Node.js Buffer.concat() - */ - -#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) -DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_concat(duk_hthread *thr) { - duk_hobject *h_arg; - duk_uint_t total_length; - duk_hbufobj *h_bufobj; - duk_hbufobj *h_bufres; - duk_hbuffer *h_val; - duk_uint_t i, n; - duk_uint8_t *p; - duk_size_t space_left; - duk_size_t copy_size; - - /* Node.js accepts only actual Arrays. */ - h_arg = duk_require_hobject(thr, 0); - if (DUK_HOBJECT_GET_CLASS_NUMBER(h_arg) != DUK_HOBJECT_CLASS_ARRAY) { - DUK_DCERROR_TYPE_INVALID_ARGS(thr); - } - - /* Compute result length and validate argument buffers. */ - n = (duk_uint_t) duk_get_length(thr, 0); - total_length = 0; - for (i = 0; i < n; i++) { - /* Neutered checks not necessary here: neutered buffers have - * zero 'length' so we'll effectively skip them. - */ - DUK_ASSERT_TOP(thr, 2); /* [ array totalLength ] */ - duk_get_prop_index(thr, 0, (duk_uarridx_t) i); /* -> [ array totalLength buf ] */ - h_bufobj = duk__require_bufobj_value(thr, 2); - DUK_ASSERT(h_bufobj != NULL); - total_length += h_bufobj->length; - if (DUK_UNLIKELY(total_length < h_bufobj->length)) { - DUK_DCERROR_RANGE_INVALID_ARGS(thr); /* Wrapped. */ - } - duk_pop(thr); - } - /* In Node.js v0.12.1 a 1-element array is special and won't create a - * copy, this was fixed later so an explicit check no longer needed. - */ - - /* User totalLength overrides a computed length, but we'll check - * every copy in the copy loop. Note that duk_to_int() can - * technically have arbitrary side effects so we need to recheck - * the buffers in the copy loop. - */ - if (!duk_is_undefined(thr, 1) && n > 0) { - /* For n == 0, Node.js ignores totalLength argument and - * returns a zero length buffer. - */ - duk_int_t total_length_signed; - total_length_signed = duk_to_int(thr, 1); - if (total_length_signed < 0) { - DUK_DCERROR_RANGE_INVALID_ARGS(thr); - } - total_length = (duk_uint_t) total_length_signed; - } - - h_bufres = duk_push_bufobj_raw(thr, - DUK_HOBJECT_FLAG_EXTENSIBLE | DUK_HOBJECT_FLAG_BUFOBJ | - DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_UINT8ARRAY), - DUK_BIDX_NODEJS_BUFFER_PROTOTYPE); - DUK_ASSERT(h_bufres != NULL); - - p = (duk_uint8_t *) duk_push_fixed_buffer_zero(thr, - total_length); /* must be zeroed, all bytes not necessarily written over */ - DUK_ASSERT(p != NULL); - space_left = (duk_size_t) total_length; - - for (i = 0; i < n; i++) { - DUK_ASSERT_TOP(thr, 4); /* [ array totalLength bufres buf ] */ - - duk_get_prop_index(thr, 0, (duk_uarridx_t) i); - h_bufobj = duk__require_bufobj_value(thr, 4); - DUK_ASSERT(h_bufobj != NULL); - - copy_size = h_bufobj->length; - if (copy_size > space_left) { - copy_size = space_left; - } - - if (h_bufobj->buf != NULL && DUK_HBUFOBJ_VALID_SLICE(h_bufobj)) { - duk_memcpy_unsafe((void *) p, (const void *) DUK_HBUFOBJ_GET_SLICE_BASE(thr->heap, h_bufobj), copy_size); - } else { - /* Just skip, leaving zeroes in the result. */ - ; - } - p += copy_size; - space_left -= copy_size; - - duk_pop(thr); - } - - h_val = duk_known_hbuffer(thr, -1); - - duk__set_bufobj_buffer(thr, h_bufres, h_val); - h_bufres->is_typedarray = 1; - DUK_HBUFOBJ_ASSERT_VALID(h_bufres); - - duk_pop(thr); /* pop plain buffer, now reachable through h_bufres */ - - return 1; /* return h_bufres */ -} -#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ - -/* - * Shared readfield and writefield methods - * - * The readfield/writefield methods need support for endianness and field - * types. All offsets are byte based so no offset shifting is needed. - */ - -#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) -/* Format of magic, bits: - * 0...1: field type; 0=uint8, 1=uint16, 2=uint32, 3=float, 4=double, 5=unused, 6=unused, 7=unused - * 3: endianness: 0=little, 1=big - * 4: signed: 1=yes, 0=no - * 5: typedarray: 1=yes, 0=no - */ -#define DUK__FLD_8BIT 0 -#define DUK__FLD_16BIT 1 -#define DUK__FLD_32BIT 2 -#define DUK__FLD_FLOAT 3 -#define DUK__FLD_DOUBLE 4 -#define DUK__FLD_VARINT 5 -#define DUK__FLD_BIGENDIAN (1 << 3) -#define DUK__FLD_SIGNED (1 << 4) -#define DUK__FLD_TYPEDARRAY (1 << 5) - -/* XXX: split into separate functions for each field type? */ -DUK_INTERNAL duk_ret_t duk_bi_buffer_readfield(duk_hthread *thr) { - duk_small_uint_t magic = (duk_small_uint_t) duk_get_current_magic(thr); - duk_small_uint_t magic_ftype; - duk_small_uint_t magic_bigendian; - duk_small_uint_t magic_signed; - duk_small_uint_t magic_typedarray; - duk_small_uint_t endswap; - duk_hbufobj *h_this; - duk_bool_t no_assert; - duk_int_t offset_signed; - duk_uint_t offset; - duk_uint_t buffer_length; - duk_uint_t check_length; - duk_uint8_t *buf; - duk_double_union du; - - magic_ftype = magic & 0x0007U; - magic_bigendian = magic & 0x0008U; - magic_signed = magic & 0x0010U; - magic_typedarray = magic & 0x0020U; - - h_this = duk__require_bufobj_this(thr); /* XXX: very inefficient for plain buffers */ - DUK_ASSERT(h_this != NULL); - buffer_length = h_this->length; - - /* [ offset noAssert ], when ftype != DUK__FLD_VARINT */ - /* [ offset fieldByteLength noAssert ], when ftype == DUK__FLD_VARINT */ - /* [ offset littleEndian ], when DUK__FLD_TYPEDARRAY (regardless of ftype) */ - - /* Handle TypedArray vs. Node.js Buffer arg differences */ - if (magic_typedarray) { - no_assert = 0; -#if defined(DUK_USE_INTEGER_LE) - endswap = !duk_to_boolean(thr, 1); /* 1=little endian */ -#else - endswap = duk_to_boolean(thr, 1); /* 1=little endian */ -#endif - } else { - no_assert = duk_to_boolean(thr, (magic_ftype == DUK__FLD_VARINT) ? 2 : 1); -#if defined(DUK_USE_INTEGER_LE) - endswap = magic_bigendian; -#else - endswap = !magic_bigendian; -#endif - } - - /* Offset is coerced first to signed integer range and then to unsigned. - * This ensures we can add a small byte length (1-8) to the offset in - * bound checks and not wrap. - */ - offset_signed = duk_to_int(thr, 0); - offset = (duk_uint_t) offset_signed; - if (offset_signed < 0) { - goto fail_bounds; - } - - DUK_DDD(DUK_DDDPRINT("readfield, buffer_length=%ld, offset=%ld, no_assert=%d, " - "magic=%04x, magic_fieldtype=%d, magic_bigendian=%d, magic_signed=%d, " - "endswap=%u", - (long) buffer_length, - (long) offset, - (int) no_assert, - (unsigned int) magic, - (int) magic_ftype, - (int) (magic_bigendian >> 3), - (int) (magic_signed >> 4), - (int) endswap)); - - /* Update 'buffer_length' to be the effective, safe limit which - * takes into account the underlying buffer. This value will be - * potentially invalidated by any side effect. - */ - check_length = DUK_HBUFOBJ_CLAMP_BYTELENGTH(h_this, buffer_length); - DUK_DDD(DUK_DDDPRINT("buffer_length=%ld, check_length=%ld", (long) buffer_length, (long) check_length)); - - if (h_this->buf) { - buf = DUK_HBUFOBJ_GET_SLICE_BASE(thr->heap, h_this); - } else { - /* Neutered. We could go into the switch-case safely with - * buf == NULL because check_length == 0. To avoid scanbuild - * warnings, fail directly instead. - */ - DUK_ASSERT(check_length == 0); - goto fail_neutered; - } - DUK_ASSERT(buf != NULL); - - switch (magic_ftype) { - case DUK__FLD_8BIT: { - duk_uint8_t tmp; - if (offset + 1U > check_length) { - goto fail_bounds; - } - tmp = buf[offset]; - if (magic_signed) { - duk_push_int(thr, (duk_int_t) ((duk_int8_t) tmp)); - } else { - duk_push_uint(thr, (duk_uint_t) tmp); - } - break; - } - case DUK__FLD_16BIT: { - duk_uint16_t tmp; - if (offset + 2U > check_length) { - goto fail_bounds; - } - duk_memcpy((void *) du.uc, (const void *) (buf + offset), 2); - tmp = du.us[0]; - if (endswap) { - tmp = DUK_BSWAP16(tmp); - } - if (magic_signed) { - duk_push_int(thr, (duk_int_t) ((duk_int16_t) tmp)); - } else { - duk_push_uint(thr, (duk_uint_t) tmp); - } - break; - } - case DUK__FLD_32BIT: { - duk_uint32_t tmp; - if (offset + 4U > check_length) { - goto fail_bounds; - } - duk_memcpy((void *) du.uc, (const void *) (buf + offset), 4); - tmp = du.ui[0]; - if (endswap) { - tmp = DUK_BSWAP32(tmp); - } - if (magic_signed) { - duk_push_int(thr, (duk_int_t) ((duk_int32_t) tmp)); - } else { - duk_push_uint(thr, (duk_uint_t) tmp); - } - break; - } - case DUK__FLD_FLOAT: { - duk_uint32_t tmp; - if (offset + 4U > check_length) { - goto fail_bounds; - } - duk_memcpy((void *) du.uc, (const void *) (buf + offset), 4); - if (endswap) { - tmp = du.ui[0]; - tmp = DUK_BSWAP32(tmp); - du.ui[0] = tmp; - } - duk_push_number(thr, (duk_double_t) du.f[0]); - break; - } - case DUK__FLD_DOUBLE: { - if (offset + 8U > check_length) { - goto fail_bounds; - } - duk_memcpy((void *) du.uc, (const void *) (buf + offset), 8); - if (endswap) { - DUK_DBLUNION_BSWAP64(&du); - } - duk_push_number(thr, (duk_double_t) du.d); - break; - } - case DUK__FLD_VARINT: { - /* Node.js Buffer variable width integer field. We don't really - * care about speed here, so aim for shortest algorithm. - */ - duk_int_t field_bytelen; - duk_int_t i, i_step, i_end; -#if defined(DUK_USE_64BIT_OPS) - duk_int64_t tmp; - duk_small_uint_t shift_tmp; -#else - duk_double_t tmp; - duk_small_int_t highbyte; -#endif - const duk_uint8_t *p; - - field_bytelen = duk_get_int(thr, 1); /* avoid side effects! */ - if (field_bytelen < 1 || field_bytelen > 6) { - goto fail_field_length; - } - if (offset + (duk_uint_t) field_bytelen > check_length) { - goto fail_bounds; - } - p = (const duk_uint8_t *) (buf + offset); - - /* Slow gathering of value using either 64-bit arithmetic - * or IEEE doubles if 64-bit types not available. Handling - * of negative numbers is a bit non-obvious in both cases. - */ - - if (magic_bigendian) { - /* Gather in big endian */ - i = 0; - i_step = 1; - i_end = field_bytelen; /* one i_step over */ - } else { - /* Gather in little endian */ - i = field_bytelen - 1; - i_step = -1; - i_end = -1; /* one i_step over */ - } - -#if defined(DUK_USE_64BIT_OPS) - tmp = 0; - do { - DUK_ASSERT(i >= 0 && i < field_bytelen); - tmp = (tmp << 8) + (duk_int64_t) p[i]; - i += i_step; - } while (i != i_end); - - if (magic_signed) { - /* Shift to sign extend. Left shift must be unsigned - * to avoid undefined behavior; right shift must be - * signed to sign extend properly. - */ - shift_tmp = (duk_small_uint_t) (64U - (duk_small_uint_t) field_bytelen * 8U); - tmp = (duk_int64_t) ((duk_uint64_t) tmp << shift_tmp) >> shift_tmp; - } - - duk_push_i64(thr, tmp); -#else - highbyte = p[i]; - if (magic_signed && (highbyte & 0x80) != 0) { - /* 0xff => 255 - 256 = -1; 0x80 => 128 - 256 = -128 */ - tmp = (duk_double_t) (highbyte - 256); - } else { - tmp = (duk_double_t) highbyte; - } - for (;;) { - i += i_step; - if (i == i_end) { - break; - } - DUK_ASSERT(i >= 0 && i < field_bytelen); - tmp = (tmp * 256.0) + (duk_double_t) p[i]; - } - - duk_push_number(thr, tmp); -#endif - break; - } - default: { /* should never happen but default here */ - goto fail_bounds; - } - } - - return 1; - -fail_neutered: -fail_field_length: -fail_bounds: - if (no_assert) { - /* Node.js return value for noAssert out-of-bounds reads is - * usually (but not always) NaN. Return NaN consistently. - */ - duk_push_nan(thr); - return 1; - } - DUK_DCERROR_RANGE_INVALID_ARGS(thr); -} -#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ - -#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) -/* XXX: split into separate functions for each field type? */ -DUK_INTERNAL duk_ret_t duk_bi_buffer_writefield(duk_hthread *thr) { - duk_small_uint_t magic = (duk_small_uint_t) duk_get_current_magic(thr); - duk_small_uint_t magic_ftype; - duk_small_uint_t magic_bigendian; - duk_small_uint_t magic_signed; - duk_small_uint_t magic_typedarray; - duk_small_uint_t endswap; - duk_hbufobj *h_this; - duk_bool_t no_assert; - duk_int_t offset_signed; - duk_uint_t offset; - duk_uint_t buffer_length; - duk_uint_t check_length; - duk_uint8_t *buf; - duk_double_union du; - duk_int_t nbytes = 0; - - magic_ftype = magic & 0x0007U; - magic_bigendian = magic & 0x0008U; - magic_signed = magic & 0x0010U; - magic_typedarray = magic & 0x0020U; - DUK_UNREF(magic_signed); - - h_this = duk__require_bufobj_this(thr); /* XXX: very inefficient for plain buffers */ - DUK_ASSERT(h_this != NULL); - buffer_length = h_this->length; - - /* [ value offset noAssert ], when ftype != DUK__FLD_VARINT */ - /* [ value offset fieldByteLength noAssert ], when ftype == DUK__FLD_VARINT */ - /* [ offset value littleEndian ], when DUK__FLD_TYPEDARRAY (regardless of ftype) */ - - /* Handle TypedArray vs. Node.js Buffer arg differences */ - if (magic_typedarray) { - no_assert = 0; -#if defined(DUK_USE_INTEGER_LE) - endswap = !duk_to_boolean(thr, 2); /* 1=little endian */ -#else - endswap = duk_to_boolean(thr, 2); /* 1=little endian */ -#endif - duk_swap(thr, 0, 1); /* offset/value order different from Node.js */ - } else { - no_assert = duk_to_boolean(thr, (magic_ftype == DUK__FLD_VARINT) ? 3 : 2); -#if defined(DUK_USE_INTEGER_LE) - endswap = magic_bigendian; -#else - endswap = !magic_bigendian; -#endif - } - - /* Offset is coerced first to signed integer range and then to unsigned. - * This ensures we can add a small byte length (1-8) to the offset in - * bound checks and not wrap. - */ - offset_signed = duk_to_int(thr, 1); - offset = (duk_uint_t) offset_signed; - - /* We need 'nbytes' even for a failed offset; return value must be - * (offset + nbytes) even when write fails due to invalid offset. - */ - if (magic_ftype != DUK__FLD_VARINT) { - DUK_ASSERT(magic_ftype < (duk_small_uint_t) (sizeof(duk__buffer_nbytes_from_fldtype) / sizeof(duk_uint8_t))); - nbytes = duk__buffer_nbytes_from_fldtype[magic_ftype]; - } else { - nbytes = duk_get_int(thr, 2); - if (nbytes < 1 || nbytes > 6) { - goto fail_field_length; - } - } - DUK_ASSERT(nbytes >= 1 && nbytes <= 8); - - /* Now we can check offset validity. */ - if (offset_signed < 0) { - goto fail_bounds; - } - - DUK_DDD(DUK_DDDPRINT("writefield, value=%!T, buffer_length=%ld, offset=%ld, no_assert=%d, " - "magic=%04x, magic_fieldtype=%d, magic_bigendian=%d, magic_signed=%d, " - "endswap=%u", - duk_get_tval(thr, 0), - (long) buffer_length, - (long) offset, - (int) no_assert, - (unsigned int) magic, - (int) magic_ftype, - (int) (magic_bigendian >> 3), - (int) (magic_signed >> 4), - (int) endswap)); - - /* Coerce value to a number before computing check_length, so that - * the field type specific coercion below can't have side effects - * that would invalidate check_length. - */ - duk_to_number(thr, 0); - - /* Update 'buffer_length' to be the effective, safe limit which - * takes into account the underlying buffer. This value will be - * potentially invalidated by any side effect. - */ - check_length = DUK_HBUFOBJ_CLAMP_BYTELENGTH(h_this, buffer_length); - DUK_DDD(DUK_DDDPRINT("buffer_length=%ld, check_length=%ld", (long) buffer_length, (long) check_length)); - - if (h_this->buf) { - buf = DUK_HBUFOBJ_GET_SLICE_BASE(thr->heap, h_this); - } else { - /* Neutered. We could go into the switch-case safely with - * buf == NULL because check_length == 0. To avoid scanbuild - * warnings, fail directly instead. - */ - DUK_ASSERT(check_length == 0); - goto fail_neutered; - } - DUK_ASSERT(buf != NULL); - - switch (magic_ftype) { - case DUK__FLD_8BIT: { - if (offset + 1U > check_length) { - goto fail_bounds; - } - /* sign doesn't matter when writing */ - buf[offset] = (duk_uint8_t) duk_to_uint32(thr, 0); - break; - } - case DUK__FLD_16BIT: { - duk_uint16_t tmp; - if (offset + 2U > check_length) { - goto fail_bounds; - } - tmp = (duk_uint16_t) duk_to_uint32(thr, 0); - if (endswap) { - tmp = DUK_BSWAP16(tmp); - } - du.us[0] = tmp; - /* sign doesn't matter when writing */ - duk_memcpy((void *) (buf + offset), (const void *) du.uc, 2); - break; - } - case DUK__FLD_32BIT: { - duk_uint32_t tmp; - if (offset + 4U > check_length) { - goto fail_bounds; - } - tmp = (duk_uint32_t) duk_to_uint32(thr, 0); - if (endswap) { - tmp = DUK_BSWAP32(tmp); - } - du.ui[0] = tmp; - /* sign doesn't matter when writing */ - duk_memcpy((void *) (buf + offset), (const void *) du.uc, 4); - break; - } - case DUK__FLD_FLOAT: { - duk_uint32_t tmp; - if (offset + 4U > check_length) { - goto fail_bounds; - } - du.f[0] = (duk_float_t) duk_to_number(thr, 0); - if (endswap) { - tmp = du.ui[0]; - tmp = DUK_BSWAP32(tmp); - du.ui[0] = tmp; - } - /* sign doesn't matter when writing */ - duk_memcpy((void *) (buf + offset), (const void *) du.uc, 4); - break; - } - case DUK__FLD_DOUBLE: { - if (offset + 8U > check_length) { - goto fail_bounds; - } - du.d = (duk_double_t) duk_to_number(thr, 0); - if (endswap) { - DUK_DBLUNION_BSWAP64(&du); - } - /* sign doesn't matter when writing */ - duk_memcpy((void *) (buf + offset), (const void *) du.uc, 8); - break; - } - case DUK__FLD_VARINT: { - /* Node.js Buffer variable width integer field. We don't really - * care about speed here, so aim for shortest algorithm. - */ - duk_int_t field_bytelen; - duk_int_t i, i_step, i_end; -#if defined(DUK_USE_64BIT_OPS) - duk_int64_t tmp; -#else - duk_double_t tmp; -#endif - duk_uint8_t *p; - - field_bytelen = (duk_int_t) nbytes; - if (offset + (duk_uint_t) field_bytelen > check_length) { - goto fail_bounds; - } - - /* Slow writing of value using either 64-bit arithmetic - * or IEEE doubles if 64-bit types not available. There's - * no special sign handling when writing varints. - */ - - if (magic_bigendian) { - /* Write in big endian */ - i = field_bytelen; /* one i_step added at top of loop */ - i_step = -1; - i_end = 0; - } else { - /* Write in little endian */ - i = -1; /* one i_step added at top of loop */ - i_step = 1; - i_end = field_bytelen - 1; - } - - /* XXX: The duk_to_number() cast followed by integer coercion - * is platform specific so NaN, +/- Infinity, and out-of-bounds - * values result in platform specific output now. - * See: test-bi-nodejs-buffer-proto-varint-special.js - */ - -#if defined(DUK_USE_64BIT_OPS) - tmp = (duk_int64_t) duk_to_number(thr, 0); - p = (duk_uint8_t *) (buf + offset); - do { - i += i_step; - DUK_ASSERT(i >= 0 && i < field_bytelen); - p[i] = (duk_uint8_t) (tmp & 0xff); - tmp = tmp >> 8; /* unnecessary shift for last byte */ - } while (i != i_end); -#else - tmp = duk_to_number(thr, 0); - p = (duk_uint8_t *) (buf + offset); - do { - i += i_step; - tmp = DUK_FLOOR(tmp); - DUK_ASSERT(i >= 0 && i < field_bytelen); - p[i] = (duk_uint8_t) (DUK_FMOD(tmp, 256.0)); - tmp = tmp / 256.0; /* unnecessary div for last byte */ - } while (i != i_end); -#endif - break; - } - default: { /* should never happen but default here */ - goto fail_bounds; - } - } - - /* Node.js Buffer: return offset + #bytes written (i.e. next - * write offset). - */ - if (magic_typedarray) { - /* For TypedArrays 'undefined' return value is specified - * by ES2015 (matches V8). - */ - return 0; - } - duk_push_uint(thr, offset + (duk_uint_t) nbytes); - return 1; - -fail_neutered: -fail_field_length: -fail_bounds: - if (no_assert) { - /* Node.js return value for failed writes is offset + #bytes - * that would have been written. - */ - /* XXX: for negative input offsets, 'offset' will be a large - * positive value so the result here is confusing. - */ - if (magic_typedarray) { - return 0; - } - duk_push_uint(thr, offset + (duk_uint_t) nbytes); - return 1; - } - DUK_DCERROR_RANGE_INVALID_ARGS(thr); -} -#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ - -/* - * Accessors for .buffer, .byteLength, .byteOffset - */ - -#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) -DUK_LOCAL duk_hbufobj *duk__autospawn_arraybuffer(duk_hthread *thr, duk_hbuffer *h_buf) { - duk_hbufobj *h_res; - - h_res = duk_push_bufobj_raw(thr, - DUK_HOBJECT_FLAG_EXTENSIBLE | DUK_HOBJECT_FLAG_BUFOBJ | - DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_ARRAYBUFFER), - DUK_BIDX_ARRAYBUFFER_PROTOTYPE); - DUK_ASSERT(h_res != NULL); - DUK_UNREF(h_res); - - duk__set_bufobj_buffer(thr, h_res, h_buf); - DUK_HBUFOBJ_ASSERT_VALID(h_res); - DUK_ASSERT(h_res->buf_prop == NULL); - return h_res; -} - -DUK_INTERNAL duk_ret_t duk_bi_typedarray_buffer_getter(duk_hthread *thr) { - duk_hbufobj *h_bufobj; - - h_bufobj = (duk_hbufobj *) duk__getrequire_bufobj_this(thr, DUK__BUFOBJ_FLAG_THROW /*flags*/); - DUK_ASSERT(h_bufobj != NULL); - if (DUK_HEAPHDR_IS_BUFFER((duk_heaphdr *) h_bufobj)) { - DUK_DD(DUK_DDPRINT("autospawn ArrayBuffer for plain buffer")); - (void) duk__autospawn_arraybuffer(thr, (duk_hbuffer *) h_bufobj); - return 1; - } else { - if (h_bufobj->buf_prop == NULL && - DUK_HOBJECT_GET_CLASS_NUMBER((duk_hobject *) h_bufobj) != DUK_HOBJECT_CLASS_ARRAYBUFFER && - h_bufobj->buf != NULL) { - duk_hbufobj *h_arrbuf; - - DUK_DD(DUK_DDPRINT("autospawn ArrayBuffer for typed array or DataView")); - h_arrbuf = duk__autospawn_arraybuffer(thr, h_bufobj->buf); - - if (h_bufobj->buf_prop == NULL) { - /* Must recheck buf_prop, in case ArrayBuffer - * alloc had a side effect which already filled - * it! - */ - - /* Set ArrayBuffer's .byteOffset and .byteLength based - * on the view so that Arraybuffer[view.byteOffset] - * matches view[0]. - */ - h_arrbuf->offset = 0; - DUK_ASSERT(h_bufobj->offset + h_bufobj->length >= h_bufobj->offset); /* Wrap check on creation. */ - h_arrbuf->length = h_bufobj->offset + h_bufobj->length; - DUK_ASSERT(h_arrbuf->buf_prop == NULL); - - DUK_ASSERT(h_bufobj->buf_prop == NULL); - h_bufobj->buf_prop = (duk_hobject *) h_arrbuf; - DUK_HBUFOBJ_INCREF(thr, h_arrbuf); /* Now reachable and accounted for. */ - } - - /* Left on stack; pushed for the second time below (OK). */ - } - if (h_bufobj->buf_prop) { - duk_push_hobject(thr, h_bufobj->buf_prop); - return 1; - } - } - return 0; -} - -DUK_INTERNAL duk_ret_t duk_bi_typedarray_byteoffset_getter(duk_hthread *thr) { - duk_hbufobj *h_bufobj; - - h_bufobj = (duk_hbufobj *) duk__getrequire_bufobj_this(thr, DUK__BUFOBJ_FLAG_THROW /*flags*/); - DUK_ASSERT(h_bufobj != NULL); - if (DUK_HEAPHDR_IS_BUFFER((duk_heaphdr *) h_bufobj)) { - duk_push_uint(thr, 0); - } else { - /* If neutered must return 0; offset is zeroed during - * neutering. - */ - duk_push_uint(thr, h_bufobj->offset); - } - return 1; -} - -DUK_INTERNAL duk_ret_t duk_bi_typedarray_bytelength_getter(duk_hthread *thr) { - duk_hbufobj *h_bufobj; - - h_bufobj = (duk_hbufobj *) duk__getrequire_bufobj_this(thr, DUK__BUFOBJ_FLAG_THROW /*flags*/); - DUK_ASSERT(h_bufobj != NULL); - if (DUK_HEAPHDR_IS_BUFFER((duk_heaphdr *) h_bufobj)) { - duk_hbuffer *h_buf; - - h_buf = (duk_hbuffer *) h_bufobj; - DUK_ASSERT(DUK_HBUFFER_GET_SIZE(h_buf) <= DUK_UINT_MAX); /* Buffer limits. */ - duk_push_uint(thr, (duk_uint_t) DUK_HBUFFER_GET_SIZE(h_buf)); - } else { - /* If neutered must return 0; length is zeroed during - * neutering. - */ - duk_push_uint(thr, h_bufobj->length); - } - return 1; -} -#else /* DUK_USE_BUFFEROBJECT_SUPPORT */ -/* No .buffer getter without ArrayBuffer support. */ -#if 0 -DUK_INTERNAL duk_ret_t duk_bi_typedarray_buffer_getter(duk_hthread *thr) { - return 0; -} -#endif - -DUK_INTERNAL duk_ret_t duk_bi_typedarray_byteoffset_getter(duk_hthread *thr) { - duk_push_uint(thr, 0); - return 1; -} - -DUK_INTERNAL duk_ret_t duk_bi_typedarray_bytelength_getter(duk_hthread *thr) { - duk_hbuffer *h_buf; - - /* XXX: helper? */ - duk_push_this(thr); - h_buf = duk_require_hbuffer(thr, -1); - duk_push_uint(thr, DUK_HBUFFER_GET_SIZE(h_buf)); - return 1; -} -#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ - -/* automatic undefs */ -#undef DUK__BUFOBJ_FLAG_PROMOTE -#undef DUK__BUFOBJ_FLAG_THROW -#undef DUK__FLD_16BIT -#undef DUK__FLD_32BIT -#undef DUK__FLD_8BIT -#undef DUK__FLD_BIGENDIAN -#undef DUK__FLD_DOUBLE -#undef DUK__FLD_FLOAT -#undef DUK__FLD_SIGNED -#undef DUK__FLD_TYPEDARRAY -#undef DUK__FLD_VARINT -#line 1 "duk_bi_cbor.c" -/* - * CBOR bindings. - * - * http://cbor.io/ - * https://tools.ietf.org/html/rfc7049 - */ - -/* #include duk_internal.h -> already included */ - -#if defined(DUK_USE_CBOR_SUPPORT) - -/* #define DUK_CBOR_STRESS */ - -/* Default behavior for encoding strings: use CBOR text string if string - * is UTF-8 compatible, otherwise use CBOR byte string. These defines - * can be used to force either type for all strings. Using text strings - * for non-UTF-8 data is technically invalid CBOR. - */ -/* #define DUK_CBOR_TEXT_STRINGS */ -/* #define DUK_CBOR_BYTE_STRINGS */ - -/* Misc. defines. */ -/* #define DUK_CBOR_PREFER_SIZE */ -/* #define DUK_CBOR_DOUBLE_AS_IS */ -/* #define DUK_CBOR_DECODE_FASTPATH */ - -typedef struct { - duk_hthread *thr; - duk_uint8_t *ptr; - duk_uint8_t *buf; - duk_uint8_t *buf_end; - duk_size_t len; - duk_idx_t idx_buf; - duk_uint_t recursion_depth; - duk_uint_t recursion_limit; -} duk_cbor_encode_context; - -typedef struct { - duk_hthread *thr; - const duk_uint8_t *buf; - duk_size_t off; - duk_size_t len; - duk_uint_t recursion_depth; - duk_uint_t recursion_limit; -} duk_cbor_decode_context; - -DUK_LOCAL void duk__cbor_encode_value(duk_cbor_encode_context *enc_ctx); -DUK_LOCAL void duk__cbor_decode_value(duk_cbor_decode_context *dec_ctx); - -/* - * Misc - */ - -DUK_LOCAL duk_uint32_t duk__cbor_double_to_uint32(double d) { - /* Out of range casts are undefined behavior, so caller must avoid. */ - DUK_ASSERT(d >= 0.0 && d <= 4294967295.0); - return (duk_uint32_t) d; -} - -/* - * Encoding - */ - -DUK_LOCAL void duk__cbor_encode_error(duk_cbor_encode_context *enc_ctx) { - (void) duk_type_error(enc_ctx->thr, "cbor encode error"); -} - -DUK_LOCAL void duk__cbor_encode_req_stack(duk_cbor_encode_context *enc_ctx) { - duk_require_stack(enc_ctx->thr, 4); -} - -DUK_LOCAL void duk__cbor_encode_objarr_entry(duk_cbor_encode_context *enc_ctx) { - duk_hthread *thr = enc_ctx->thr; - - /* Native stack check in object/array recursion. */ - duk_native_stack_check(thr); - - /* When working with deeply recursive structures, this is important - * to ensure there's no effective depth limit. - */ - duk__cbor_encode_req_stack(enc_ctx); - - DUK_ASSERT(enc_ctx->recursion_depth <= enc_ctx->recursion_limit); - if (enc_ctx->recursion_depth >= enc_ctx->recursion_limit) { - DUK_ERROR_RANGE(thr, DUK_STR_ENC_RECLIMIT); - DUK_WO_NORETURN(return;); - } - enc_ctx->recursion_depth++; -} - -DUK_LOCAL void duk__cbor_encode_objarr_exit(duk_cbor_encode_context *enc_ctx) { - DUK_ASSERT(enc_ctx->recursion_depth > 0); - enc_ctx->recursion_depth--; -} - -/* Check that a size_t is in uint32 range to avoid out-of-range casts. */ -DUK_LOCAL void duk__cbor_encode_sizet_uint32_check(duk_cbor_encode_context *enc_ctx, duk_size_t len) { - if (DUK_UNLIKELY(sizeof(duk_size_t) > sizeof(duk_uint32_t) && len > (duk_size_t) DUK_UINT32_MAX)) { - duk__cbor_encode_error(enc_ctx); - } -} - -DUK_LOCAL DUK_NOINLINE void duk__cbor_encode_ensure_slowpath(duk_cbor_encode_context *enc_ctx, duk_size_t len) { - duk_size_t oldlen; - duk_size_t minlen; - duk_size_t newlen; - duk_uint8_t *p_new; - duk_size_t old_data_len; - - DUK_ASSERT(enc_ctx->ptr >= enc_ctx->buf); - DUK_ASSERT(enc_ctx->buf_end >= enc_ctx->ptr); - DUK_ASSERT(enc_ctx->buf_end >= enc_ctx->buf); - - /* Overflow check. - * - * Limit example: 0xffffffffUL / 2U = 0x7fffffffUL, we reject >= 0x80000000UL. - */ - oldlen = enc_ctx->len; - minlen = oldlen + len; - if (DUK_UNLIKELY(oldlen > DUK_SIZE_MAX / 2U || minlen < oldlen)) { - duk__cbor_encode_error(enc_ctx); - } - -#if defined(DUK_CBOR_STRESS) - newlen = oldlen + 1U; -#else - newlen = oldlen * 2U; -#endif - DUK_ASSERT(newlen >= oldlen); - - if (minlen > newlen) { - newlen = minlen; - } - DUK_ASSERT(newlen >= oldlen); - DUK_ASSERT(newlen >= minlen); - DUK_ASSERT(newlen > 0U); - - DUK_DD(DUK_DDPRINT("cbor encode buffer resized to %ld", (long) newlen)); - - p_new = (duk_uint8_t *) duk_resize_buffer(enc_ctx->thr, enc_ctx->idx_buf, newlen); - DUK_ASSERT(p_new != NULL); - old_data_len = (duk_size_t) (enc_ctx->ptr - enc_ctx->buf); - enc_ctx->buf = p_new; - enc_ctx->buf_end = p_new + newlen; - enc_ctx->ptr = p_new + old_data_len; - enc_ctx->len = newlen; -} - -DUK_LOCAL DUK_INLINE void duk__cbor_encode_ensure(duk_cbor_encode_context *enc_ctx, duk_size_t len) { - if (DUK_LIKELY((duk_size_t) (enc_ctx->buf_end - enc_ctx->ptr) >= len)) { - return; - } - duk__cbor_encode_ensure_slowpath(enc_ctx, len); -} - -DUK_LOCAL duk_size_t duk__cbor_get_reserve(duk_cbor_encode_context *enc_ctx) { - DUK_ASSERT(enc_ctx->ptr >= enc_ctx->buf); - DUK_ASSERT(enc_ctx->ptr <= enc_ctx->buf_end); - return (duk_size_t) (enc_ctx->buf_end - enc_ctx->ptr); -} - -DUK_LOCAL void duk__cbor_encode_uint32(duk_cbor_encode_context *enc_ctx, duk_uint32_t u, duk_uint8_t base) { - duk_uint8_t *p; - - /* Caller must ensure space. */ - DUK_ASSERT(duk__cbor_get_reserve(enc_ctx) >= 1 + 4); - - p = enc_ctx->ptr; - if (DUK_LIKELY(u <= 23U)) { - *p++ = (duk_uint8_t) (base + (duk_uint8_t) u); - } else if (u <= 0xffUL) { - *p++ = base + 0x18U; - *p++ = (duk_uint8_t) u; - } else if (u <= 0xffffUL) { - *p++ = base + 0x19U; - DUK_RAW_WRITEINC_U16_BE(p, (duk_uint16_t) u); - } else { - *p++ = base + 0x1aU; - DUK_RAW_WRITEINC_U32_BE(p, u); - } - enc_ctx->ptr = p; -} - -#if defined(DUK_CBOR_DOUBLE_AS_IS) -DUK_LOCAL void duk__cbor_encode_double(duk_cbor_encode_context *enc_ctx, double d) { - duk_uint8_t *p; - - /* Caller must ensure space. */ - DUK_ASSERT(duk__cbor_get_reserve(enc_ctx) >= 1 + 8); - - p = enc_ctx->ptr; - *p++ = 0xfbU; - DUK_RAW_WRITEINC_DOUBLE_BE(p, d); - p += 8; - enc_ctx->ptr = p; -} -#else /* DUK_CBOR_DOUBLE_AS_IS */ -DUK_LOCAL void duk__cbor_encode_double_fp(duk_cbor_encode_context *enc_ctx, double d) { - duk_double_union u; - duk_uint16_t u16; - duk_int16_t expt; - duk_uint8_t *p; - - DUK_ASSERT(DUK_FPCLASSIFY(d) != DUK_FP_ZERO); - - /* Caller must ensure space. */ - DUK_ASSERT(duk__cbor_get_reserve(enc_ctx) >= 1 + 8); - - /* Organize into little endian (no-op if platform is little endian). */ - u.d = d; - duk_dblunion_host_to_little(&u); - - /* Check if 'd' can represented as a normal half-float. - * Denormal half-floats could also be used, but that check - * isn't done now (denormal half-floats are decoded of course). - * So just check exponent range and that at most 10 significant - * bits (excluding implicit leading 1) are used in 'd'. - */ - u16 = (((duk_uint16_t) u.uc[7]) << 8) | ((duk_uint16_t) u.uc[6]); - expt = (duk_int16_t) ((u16 & 0x7ff0U) >> 4) - 1023; - - if (expt >= -14 && expt <= 15) { - /* Half-float normal exponents (excl. denormals). - * - * 7 6 5 4 3 2 1 0 (LE index) - * double: seeeeeee eeeemmmm mmmmmmmm mmmmmmmm mmmmmmmm mmmmmmmm mmmmmmmm mmmmmmmm - * half: seeeee mmmm mmmmmm00 00000000 00000000 00000000 00000000 00000000 - */ - duk_bool_t use_half_float; - - use_half_float = - (u.uc[0] == 0 && u.uc[1] == 0 && u.uc[2] == 0 && u.uc[3] == 0 && u.uc[4] == 0 && (u.uc[5] & 0x03U) == 0); - - if (use_half_float) { - duk_uint32_t t; - - expt += 15; - t = (duk_uint32_t) (u.uc[7] & 0x80U) << 8; - t += (duk_uint32_t) expt << 10; - t += ((duk_uint32_t) u.uc[6] & 0x0fU) << 6; - t += ((duk_uint32_t) u.uc[5]) >> 2; - - /* seeeeemm mmmmmmmm */ - p = enc_ctx->ptr; - *p++ = 0xf9U; - DUK_RAW_WRITEINC_U16_BE(p, (duk_uint16_t) t); - enc_ctx->ptr = p; - return; - } - } - - /* Same check for plain float. Also no denormal support here. */ - if (expt >= -126 && expt <= 127) { - /* Float normal exponents (excl. denormals). - * - * double: seeeeeee eeeemmmm mmmmmmmm mmmmmmmm mmmmmmmm mmmmmmmm mmmmmmmm mmmmmmmm - * float: seeee eeeemmmm mmmmmmmm mmmmmmmm mmm00000 00000000 00000000 00000000 - */ - duk_bool_t use_float; - duk_float_t d_float; - - /* We could do this explicit mantissa check, but doing - * a double-float-double cast is fine because we've - * already verified that the exponent is in range so - * that the narrower cast is not undefined behavior. - */ -#if 0 - use_float = - (u.uc[0] == 0 && u.uc[1] == 0 && u.uc[2] == 0 && (u.uc[3] & 0xe0U) == 0); -#endif - d_float = (duk_float_t) d; - use_float = duk_double_equals((duk_double_t) d_float, d); - if (use_float) { - p = enc_ctx->ptr; - *p++ = 0xfaU; - DUK_RAW_WRITEINC_FLOAT_BE(p, d_float); - enc_ctx->ptr = p; - return; - } - } - - /* Special handling for NaN and Inf which we want to encode as - * half-floats. They share the same (maximum) exponent. - */ - if (expt == 1024) { - DUK_ASSERT(DUK_ISNAN(d) || DUK_ISINF(d)); - p = enc_ctx->ptr; - *p++ = 0xf9U; - if (DUK_ISNAN(d)) { - /* Shortest NaN encoding is using a half-float. Lose the - * exact NaN bits in the process. IEEE double would be - * 7ff8 0000 0000 0000, i.e. a quiet NaN in most architectures - * (https://en.wikipedia.org/wiki/NaN#Encoding). The - * equivalent half float is 7e00. - */ - *p++ = 0x7eU; - } else { - /* Shortest +/- Infinity encoding is using a half-float. */ - if (DUK_SIGNBIT(d)) { - *p++ = 0xfcU; - } else { - *p++ = 0x7cU; - } - } - *p++ = 0x00U; - enc_ctx->ptr = p; - return; - } - - /* Cannot use half-float or float, encode as full IEEE double. */ - p = enc_ctx->ptr; - *p++ = 0xfbU; - DUK_RAW_WRITEINC_DOUBLE_BE(p, d); - enc_ctx->ptr = p; -} - -DUK_LOCAL void duk__cbor_encode_double(duk_cbor_encode_context *enc_ctx, double d) { - duk_uint8_t *p; - double d_floor; - - /* Integers and floating point values of all types are conceptually - * equivalent in CBOR. Try to always choose the shortest encoding - * which is not always immediately obvious. For example, NaN and Inf - * can be most compactly represented as a half-float (assuming NaN - * bits are not preserved), and 0x1'0000'0000 as a single precision - * float. Shortest forms in preference order (prefer integer over - * float when equal length): - * - * uint 1 byte [0,23] (not -0) - * sint 1 byte [-24,-1] - * uint+1 2 bytes [24,255] - * sint+1 2 bytes [-256,-25] - * uint+2 3 bytes [256,65535] - * sint+2 3 bytes [-65536,-257] - * half-float 3 bytes -0, NaN, +/- Infinity, range [-65504,65504] - * uint+4 5 bytes [65536,4294967295] - * sint+4 5 bytes [-4294967296,-258] - * float 5 bytes range [-(1 - 2^(-24)) * 2^128, (1 - 2^(-24)) * 2^128] - * uint+8 9 bytes [4294967296,18446744073709551615] - * sint+8 9 bytes [-18446744073709551616,-4294967297] - * double 9 bytes - * - * For whole numbers (compatible with integers): - * - 1-byte or 2-byte uint/sint representation is preferred for - * [-256,255]. - * - 3-byte uint/sint is preferred for [-65536,65535]. Half floats - * are never preferred because they have the same length. - * - 5-byte uint/sint is preferred for [-4294967296,4294967295]. - * Single precision floats are never preferred, and half-floats - * don't reach above the 3-byte uint/sint range so they're never - * preferred. - * - So, for all integers up to signed/unsigned 32-bit range the - * preferred encoding is always an integer uint/sint. - * - For integers above 32 bits the situation is more complicated. - * Half-floats are never useful for them because of their limited - * range, but IEEE single precision floats (5 bytes encoded) can - * represent some integers between the 32-bit and 64-bit ranges - * which require 9 bytes as a uint/sint. - * - * For floating point values not compatible with integers, the - * preferred encoding is quite clear: - * - For +Inf/-Inf use half-float. - * - For NaN use a half-float, assuming NaN bits ("payload") is - * not worth preserving. Duktape doesn't in general guarantee - * preservation of the NaN payload so using a half-float seems - * consistent with that. - * - For remaining values, prefer the shortest form which doesn't - * lose any precision. For normal half-floats and single precision - * floats this is simple: just check exponent and mantissa bits - * using a fixed mask. For denormal half-floats and single - * precision floats the check is a bit more complicated: a normal - * IEEE double can sometimes be represented as a denormal - * half-float or single precision float. - * - * https://en.wikipedia.org/wiki/Half-precision_floating-point_format#IEEE_754_half-precision_binary_floating-point_format:_binary16 - */ - - /* Caller must ensure space. */ - DUK_ASSERT(duk__cbor_get_reserve(enc_ctx) >= 1 + 8); - - /* Most important path is integers. The floor() test will be true - * for Inf too (but not NaN). - */ - d_floor = DUK_FLOOR(d); /* identity if d is +/- 0.0, NaN, or +/- Infinity */ - if (DUK_LIKELY(duk_double_equals(d_floor, d) != 0)) { - DUK_ASSERT(!DUK_ISNAN(d)); /* NaN == NaN compares false. */ - if (DUK_SIGNBIT(d)) { - if (d >= -4294967296.0) { - d = -1.0 - d; - if (d >= 0.0) { - DUK_ASSERT(d >= 0.0); - duk__cbor_encode_uint32(enc_ctx, duk__cbor_double_to_uint32(d), 0x20U); - return; - } - - /* Input was negative zero, d == -1.0 < 0.0. - * Shortest -0 is using half-float. - */ - p = enc_ctx->ptr; - *p++ = 0xf9U; - *p++ = 0x80U; - *p++ = 0x00U; - enc_ctx->ptr = p; - return; - } - } else { - if (d <= 4294967295.0) { - /* Positive zero needs no special handling. */ - DUK_ASSERT(d >= 0.0); - duk__cbor_encode_uint32(enc_ctx, duk__cbor_double_to_uint32(d), 0x00U); - return; - } - } - } - - /* 64-bit integers are not supported at present. So - * we also don't need to deal with choosing between a - * 64-bit uint/sint representation vs. IEEE double or - * float. - */ - - DUK_ASSERT(DUK_FPCLASSIFY(d) != DUK_FP_ZERO); - duk__cbor_encode_double_fp(enc_ctx, d); -} -#endif /* DUK_CBOR_DOUBLE_AS_IS */ - -DUK_LOCAL void duk__cbor_encode_string_top(duk_cbor_encode_context *enc_ctx) { - const duk_uint8_t *str; - duk_size_t len; - duk_uint8_t *p; - - /* CBOR differentiates between UTF-8 text strings and byte strings. - * Text strings MUST be valid UTF-8, so not all Duktape strings can - * be encoded as valid CBOR text strings. Possible behaviors: - * - * 1. Use text string when input is valid UTF-8, otherwise use - * byte string (maybe tagged to indicate it was an extended - * UTF-8 string). - * 2. Always use text strings, but sanitize input string so that - * invalid UTF-8 is replaced with U+FFFD for example. Combine - * surrogates whenever possible. - * 3. Always use byte strings. This is simple and produces valid - * CBOR, but isn't ideal for interoperability. - * 4. Always use text strings, even for invalid UTF-8 such as - * codepoints in the surrogate pair range. This is simple but - * produces technically invalid CBOR for non-UTF-8 strings which - * may affect interoperability. - * - * Current default is 1; can be changed with defines. - */ - - /* Caller must ensure space. */ - DUK_ASSERT(duk__cbor_get_reserve(enc_ctx) >= 1 + 8); - - str = (const duk_uint8_t *) duk_require_lstring(enc_ctx->thr, -1, &len); - if (duk_is_symbol(enc_ctx->thr, -1)) { - /* Symbols, encode as an empty table for now. This matches - * the behavior of cbor-js. - * - * XXX: Maybe encode String() coercion with a tag? - * XXX: Option to keep enough information to recover - * Symbols when decoding (this is not always desirable). - */ - p = enc_ctx->ptr; - *p++ = 0xa0U; - enc_ctx->ptr = p; - return; - } - - duk__cbor_encode_sizet_uint32_check(enc_ctx, len); -#if defined(DUK_CBOR_TEXT_STRINGS) - duk__cbor_encode_uint32(enc_ctx, (duk_uint32_t) len, 0x60U); -#elif defined(DUK_CBOR_BYTE_STRINGS) - duk__cbor_encode_uint32(enc_ctx, (duk_uint32_t) len, 0x40U); -#else - duk__cbor_encode_uint32(enc_ctx, - (duk_uint32_t) len, - (DUK_LIKELY(duk_unicode_is_utf8_compatible(str, len) != 0) ? 0x60U : 0x40U)); -#endif - duk__cbor_encode_ensure(enc_ctx, len); - p = enc_ctx->ptr; - duk_memcpy((void *) p, (const void *) str, len); - p += len; - enc_ctx->ptr = p; -} - -DUK_LOCAL void duk__cbor_encode_object(duk_cbor_encode_context *enc_ctx) { - duk_uint8_t *buf; - duk_size_t len; - duk_uint8_t *p; - duk_size_t i; - duk_size_t off_ib; - duk_uint32_t count; - - /* Caller must ensure space. */ - DUK_ASSERT(duk__cbor_get_reserve(enc_ctx) >= 1 + 8); - - duk__cbor_encode_objarr_entry(enc_ctx); - - /* XXX: Support for specific built-ins like Date and RegExp. */ - if (duk_is_array(enc_ctx->thr, -1)) { - /* Shortest encoding for arrays >= 256 in length is actually - * the indefinite length one (3 or more bytes vs. 2 bytes). - * We still use the definite length version because it is - * more decoding friendly. - */ - len = duk_get_length(enc_ctx->thr, -1); - duk__cbor_encode_sizet_uint32_check(enc_ctx, len); - duk__cbor_encode_uint32(enc_ctx, (duk_uint32_t) len, 0x80U); - for (i = 0; i < len; i++) { - duk_get_prop_index(enc_ctx->thr, -1, (duk_uarridx_t) i); - duk__cbor_encode_value(enc_ctx); - } - } else if (duk_is_buffer_data(enc_ctx->thr, -1)) { - /* XXX: Tag buffer data? - * XXX: Encode typed arrays as integer arrays rather - * than buffer data as is? - */ - buf = (duk_uint8_t *) duk_require_buffer_data(enc_ctx->thr, -1, &len); - duk__cbor_encode_sizet_uint32_check(enc_ctx, len); - duk__cbor_encode_uint32(enc_ctx, (duk_uint32_t) len, 0x40U); - duk__cbor_encode_ensure(enc_ctx, len); - p = enc_ctx->ptr; - duk_memcpy_unsafe((void *) p, (const void *) buf, len); - p += len; - enc_ctx->ptr = p; - } else { - /* We don't know the number of properties in advance - * but would still like to encode at least small - * objects without indefinite length. Emit an - * indefinite length byte initially, and if the final - * property count is small enough to also fit in one - * byte, backpatch it later. Otherwise keep the - * indefinite length. This works well up to 23 - * properties which is practical and good enough. - */ - off_ib = (duk_size_t) (enc_ctx->ptr - enc_ctx->buf); /* XXX: get_offset? */ - count = 0U; - p = enc_ctx->ptr; - *p++ = 0xa0U + 0x1fU; /* indefinite length */ - enc_ctx->ptr = p; - duk_enum(enc_ctx->thr, -1, DUK_ENUM_OWN_PROPERTIES_ONLY); - while (duk_next(enc_ctx->thr, -1, 1 /*get_value*/)) { - duk_insert(enc_ctx->thr, -2); /* [ ... key value ] -> [ ... value key ] */ - duk__cbor_encode_value(enc_ctx); - duk__cbor_encode_value(enc_ctx); - count++; - if (count == 0U) { - duk__cbor_encode_error(enc_ctx); - } - } - duk_pop(enc_ctx->thr); - if (count <= 0x17U) { - DUK_ASSERT(off_ib < enc_ctx->len); - enc_ctx->buf[off_ib] = 0xa0U + (duk_uint8_t) count; - } else { - duk__cbor_encode_ensure(enc_ctx, 1); - p = enc_ctx->ptr; - *p++ = 0xffU; /* break */ - enc_ctx->ptr = p; - } - } - - duk__cbor_encode_objarr_exit(enc_ctx); -} - -DUK_LOCAL void duk__cbor_encode_buffer(duk_cbor_encode_context *enc_ctx) { - duk_uint8_t *buf; - duk_size_t len; - duk_uint8_t *p; - - /* Caller must ensure space. */ - DUK_ASSERT(duk__cbor_get_reserve(enc_ctx) >= 1 + 8); - - /* Tag buffer data? */ - buf = (duk_uint8_t *) duk_require_buffer(enc_ctx->thr, -1, &len); - duk__cbor_encode_sizet_uint32_check(enc_ctx, len); - duk__cbor_encode_uint32(enc_ctx, (duk_uint32_t) len, 0x40U); - duk__cbor_encode_ensure(enc_ctx, len); - p = enc_ctx->ptr; - duk_memcpy_unsafe((void *) p, (const void *) buf, len); - p += len; - enc_ctx->ptr = p; -} - -DUK_LOCAL void duk__cbor_encode_pointer(duk_cbor_encode_context *enc_ctx) { - /* Pointers (void *) are challenging to encode. They can't - * be relied to be even 64-bit integer compatible (there are - * pointer models larger than that), nor can floats encode - * them. They could be encoded as strings (%p format) but - * that's not portable. They could be encoded as direct memory - * representations. Recovering pointers is non-portable in any - * case but it would be nice to be able to detect and recover - * compatible pointers. - * - * For now, encode as "(%p)" string, matching JX. There doesn't - * seem to be an appropriate tag, so pointers don't currently - * survive a CBOR encode/decode roundtrip intact. - */ - const char *ptr; - - ptr = duk_to_string(enc_ctx->thr, -1); - DUK_ASSERT(ptr != NULL); - duk_push_sprintf(enc_ctx->thr, "(%s)", ptr); - duk_remove(enc_ctx->thr, -2); - duk__cbor_encode_string_top(enc_ctx); -} - -DUK_LOCAL void duk__cbor_encode_lightfunc(duk_cbor_encode_context *enc_ctx) { - duk_uint8_t *p; - - /* Caller must ensure space. */ - DUK_ASSERT(duk__cbor_get_reserve(enc_ctx) >= 1 + 8); - - /* For now encode as an empty object. */ - p = enc_ctx->ptr; - *p++ = 0xa0U; - enc_ctx->ptr = p; -} - -DUK_LOCAL void duk__cbor_encode_value(duk_cbor_encode_context *enc_ctx) { - duk_uint8_t *p; - - /* Encode/decode cycle currently loses some type information. - * This can be improved by registering custom tags with IANA. - */ - - /* Reserve space for up to 64-bit types (1 initial byte + 8 - * followup bytes). This allows encoding of integers, floats, - * string/buffer length fields, etc without separate checks - * in each code path. - */ - duk__cbor_encode_ensure(enc_ctx, 1 + 8); - - switch (duk_get_type(enc_ctx->thr, -1)) { - case DUK_TYPE_UNDEFINED: { - p = enc_ctx->ptr; - *p++ = 0xf7; - enc_ctx->ptr = p; - break; - } - case DUK_TYPE_NULL: { - p = enc_ctx->ptr; - *p++ = 0xf6; - enc_ctx->ptr = p; - break; - } - case DUK_TYPE_BOOLEAN: { - duk_uint8_t u8 = duk_get_boolean(enc_ctx->thr, -1) ? 0xf5U : 0xf4U; - p = enc_ctx->ptr; - *p++ = u8; - enc_ctx->ptr = p; - break; - } - case DUK_TYPE_NUMBER: { - duk__cbor_encode_double(enc_ctx, duk_get_number(enc_ctx->thr, -1)); - break; - } - case DUK_TYPE_STRING: { - duk__cbor_encode_string_top(enc_ctx); - break; - } - case DUK_TYPE_OBJECT: { - duk__cbor_encode_object(enc_ctx); - break; - } - case DUK_TYPE_BUFFER: { - duk__cbor_encode_buffer(enc_ctx); - break; - } - case DUK_TYPE_POINTER: { - duk__cbor_encode_pointer(enc_ctx); - break; - } - case DUK_TYPE_LIGHTFUNC: { - duk__cbor_encode_lightfunc(enc_ctx); - break; - } - case DUK_TYPE_NONE: - default: - goto fail; - } - - duk_pop(enc_ctx->thr); - return; - -fail: - duk__cbor_encode_error(enc_ctx); -} - -/* - * Decoding - */ - -DUK_LOCAL void duk__cbor_decode_error(duk_cbor_decode_context *dec_ctx) { - (void) duk_type_error(dec_ctx->thr, "cbor decode error"); -} - -DUK_LOCAL void duk__cbor_decode_req_stack(duk_cbor_decode_context *dec_ctx) { - duk_require_stack(dec_ctx->thr, 4); -} - -DUK_LOCAL void duk__cbor_decode_objarr_entry(duk_cbor_decode_context *dec_ctx) { - duk_hthread *thr = dec_ctx->thr; - - /* Native stack check in object/array recursion. */ - duk_native_stack_check(thr); - - duk__cbor_decode_req_stack(dec_ctx); - - DUK_ASSERT(dec_ctx->recursion_depth <= dec_ctx->recursion_limit); - if (dec_ctx->recursion_depth >= dec_ctx->recursion_limit) { - DUK_ERROR_RANGE(thr, DUK_STR_DEC_RECLIMIT); - DUK_WO_NORETURN(return;); - } - dec_ctx->recursion_depth++; -} - -DUK_LOCAL void duk__cbor_decode_objarr_exit(duk_cbor_decode_context *dec_ctx) { - DUK_ASSERT(dec_ctx->recursion_depth > 0); - dec_ctx->recursion_depth--; -} - -DUK_LOCAL duk_uint8_t duk__cbor_decode_readbyte(duk_cbor_decode_context *dec_ctx) { - DUK_ASSERT(dec_ctx->off <= dec_ctx->len); - if (DUK_UNLIKELY(dec_ctx->len - dec_ctx->off < 1U)) { - duk__cbor_decode_error(dec_ctx); - } - return dec_ctx->buf[dec_ctx->off++]; -} - -DUK_LOCAL duk_uint16_t duk__cbor_decode_read_u16(duk_cbor_decode_context *dec_ctx) { - duk_uint16_t res; - - DUK_ASSERT(dec_ctx->off <= dec_ctx->len); - if (DUK_UNLIKELY(dec_ctx->len - dec_ctx->off < 2U)) { - duk__cbor_decode_error(dec_ctx); - } - res = DUK_RAW_READ_U16_BE(dec_ctx->buf + dec_ctx->off); - dec_ctx->off += 2; - return res; -} - -DUK_LOCAL duk_uint32_t duk__cbor_decode_read_u32(duk_cbor_decode_context *dec_ctx) { - duk_uint32_t res; - - DUK_ASSERT(dec_ctx->off <= dec_ctx->len); - if (DUK_UNLIKELY(dec_ctx->len - dec_ctx->off < 4U)) { - duk__cbor_decode_error(dec_ctx); - } - res = DUK_RAW_READ_U32_BE(dec_ctx->buf + dec_ctx->off); - dec_ctx->off += 4; - return res; -} - -DUK_LOCAL duk_uint8_t duk__cbor_decode_peekbyte(duk_cbor_decode_context *dec_ctx) { - if (DUK_UNLIKELY(dec_ctx->off >= dec_ctx->len)) { - duk__cbor_decode_error(dec_ctx); - } - return dec_ctx->buf[dec_ctx->off]; -} - -DUK_LOCAL void duk__cbor_decode_rewind(duk_cbor_decode_context *dec_ctx, duk_size_t len) { - DUK_ASSERT(len <= dec_ctx->off); /* Caller must ensure. */ - dec_ctx->off -= len; -} - -#if 0 -DUK_LOCAL void duk__cbor_decode_ensure(duk_cbor_decode_context *dec_ctx, duk_size_t len) { - if (dec_ctx->off + len > dec_ctx->len) { - duk__cbor_decode_error(dec_ctx); - } -} -#endif - -DUK_LOCAL const duk_uint8_t *duk__cbor_decode_consume(duk_cbor_decode_context *dec_ctx, duk_size_t len) { - DUK_ASSERT(dec_ctx->off <= dec_ctx->len); - if (DUK_LIKELY(dec_ctx->len - dec_ctx->off >= len)) { - const duk_uint8_t *res = dec_ctx->buf + dec_ctx->off; - dec_ctx->off += len; - return res; - } - - duk__cbor_decode_error(dec_ctx); /* Not enough input. */ - return NULL; -} - -DUK_LOCAL int duk__cbor_decode_checkbreak(duk_cbor_decode_context *dec_ctx) { - if (duk__cbor_decode_peekbyte(dec_ctx) == 0xffU) { - DUK_ASSERT(dec_ctx->off < dec_ctx->len); - dec_ctx->off++; -#if 0 - (void) duk__cbor_decode_readbyte(dec_ctx); -#endif - return 1; - } - return 0; -} - -DUK_LOCAL void duk__cbor_decode_push_aival_int(duk_cbor_decode_context *dec_ctx, duk_uint8_t ib, duk_bool_t negative) { - duk_uint8_t ai; - duk_uint32_t t, t1, t2; -#if 0 - duk_uint64_t t3; -#endif - duk_double_t d1, d2; - duk_double_t d; - - ai = ib & 0x1fU; - if (ai <= 0x17U) { - t = ai; - goto shared_exit; - } - - switch (ai) { - case 0x18U: /* 1 byte */ - t = (duk_uint32_t) duk__cbor_decode_readbyte(dec_ctx); - goto shared_exit; - case 0x19U: /* 2 byte */ - t = (duk_uint32_t) duk__cbor_decode_read_u16(dec_ctx); - goto shared_exit; - case 0x1aU: /* 4 byte */ - t = (duk_uint32_t) duk__cbor_decode_read_u32(dec_ctx); - goto shared_exit; - case 0x1bU: /* 8 byte */ - /* For uint64 it's important to handle the -1.0 part before - * casting to double: otherwise the adjustment might be lost - * in the cast. Uses: -1.0 - d <=> -(d + 1.0). - */ - t = (duk_uint32_t) duk__cbor_decode_read_u32(dec_ctx); - t2 = t; - t = (duk_uint32_t) duk__cbor_decode_read_u32(dec_ctx); - t1 = t; -#if 0 - t3 = (duk_uint64_t) t2 * DUK_U64_CONSTANT(0x100000000) + (duk_uint64_t) t1; - if (negative) { - if (t3 == DUK_UINT64_MAX) { - /* -(0xffff'ffff'ffff'ffffULL + 1) = - * -0x1'0000'0000'0000'0000 - * - * >>> -0x10000000000000000 - * -18446744073709551616L - */ - return -18446744073709551616.0; - } else { - return -((duk_double_t) (t3 + DUK_U64_CONSTANT(1))); - } - } else { - return (duk_double_t) t3; /* XXX: cast helper */ - } -#endif -#if 0 - t3 = (duk_uint64_t) t2 * DUK_U64_CONSTANT(0x100000000) + (duk_uint64_t) t1; - if (negative) { - /* Simpler version: take advantage of the fact that - * 0xffff'ffff'ffff'ffff and 0x1'0000'0000'0000'0000 - * both round to 0x1'0000'0000'0000'0000: - * > (0xffffffffffffffff).toString(16) - * '10000000000000000' - * > (0x10000000000000000).toString(16) - * '10000000000000000' - * - * For the DUK_UINT64_MAX case we just skip the +1 - * increment to avoid wrapping; the result still - * comes out right for an IEEE double cast. - */ - if (t3 != DUK_UINT64_MAX) { - t3++; - } - return -((duk_double_t) t3); - } else { - return (duk_double_t) t3; /* XXX: cast helper */ - } -#endif -#if 1 - /* Use two double parts, avoids dependency on 64-bit type. - * Avoid precision loss carefully, especially when dealing - * with the required +1 for negative values. - * - * No fastint check for this path at present. - */ - d1 = (duk_double_t) t1; /* XXX: cast helpers */ - d2 = (duk_double_t) t2 * 4294967296.0; - if (negative) { - d1 += 1.0; - } - d = d2 + d1; - if (negative) { - d = -d; - } -#endif - /* XXX: a push and check for fastint API would be nice */ - duk_push_number(dec_ctx->thr, d); - return; - } - - duk__cbor_decode_error(dec_ctx); - return; - -shared_exit: - if (negative) { - /* XXX: a push and check for fastint API would be nice */ - if ((duk_uint_t) t <= (duk_uint_t) - (DUK_INT_MIN + 1)) { - duk_push_int(dec_ctx->thr, -1 - ((duk_int_t) t)); - } else { - duk_push_number(dec_ctx->thr, -1.0 - (duk_double_t) t); - } - } else { - duk_push_uint(dec_ctx->thr, (duk_uint_t) t); - } -} - -DUK_LOCAL void duk__cbor_decode_skip_aival_int(duk_cbor_decode_context *dec_ctx, duk_uint8_t ib) { - const duk_int8_t skips[32] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 4, 8, -1, -1, -1, -1 }; - duk_uint8_t ai; - duk_int8_t skip; - - ai = ib & 0x1fU; - skip = skips[ai]; - if (DUK_UNLIKELY(skip < 0)) { - duk__cbor_decode_error(dec_ctx); - } - duk__cbor_decode_consume(dec_ctx, (duk_size_t) skip); - return; -} - -DUK_LOCAL duk_uint32_t duk__cbor_decode_aival_uint32(duk_cbor_decode_context *dec_ctx, duk_uint8_t ib) { - duk_uint8_t ai; - duk_uint32_t t; - - ai = ib & 0x1fU; - if (ai <= 0x17U) { - return (duk_uint32_t) ai; - } - - switch (ai) { - case 0x18U: /* 1 byte */ - t = (duk_uint32_t) duk__cbor_decode_readbyte(dec_ctx); - return t; - case 0x19U: /* 2 byte */ - t = (duk_uint32_t) duk__cbor_decode_read_u16(dec_ctx); - return t; - case 0x1aU: /* 4 byte */ - t = (duk_uint32_t) duk__cbor_decode_read_u32(dec_ctx); - return t; - case 0x1bU: /* 8 byte */ - t = (duk_uint32_t) duk__cbor_decode_read_u32(dec_ctx); - if (t != 0U) { - break; - } - t = (duk_uint32_t) duk__cbor_decode_read_u32(dec_ctx); - return t; - } - - duk__cbor_decode_error(dec_ctx); - return 0U; -} - -DUK_LOCAL void duk__cbor_decode_buffer(duk_cbor_decode_context *dec_ctx, duk_uint8_t expected_base) { - duk_uint32_t len; - duk_uint8_t *buf; - const duk_uint8_t *inp; - duk_uint8_t ib; - - ib = duk__cbor_decode_readbyte(dec_ctx); - if ((ib & 0xe0U) != expected_base) { - duk__cbor_decode_error(dec_ctx); - } - /* Indefinite format is rejected by the following on purpose. */ - len = duk__cbor_decode_aival_uint32(dec_ctx, ib); - inp = duk__cbor_decode_consume(dec_ctx, len); - /* XXX: duk_push_fixed_buffer_with_data() would be a nice API addition. */ - buf = (duk_uint8_t *) duk_push_fixed_buffer(dec_ctx->thr, (duk_size_t) len); - duk_memcpy((void *) buf, (const void *) inp, (size_t) len); -} - -DUK_LOCAL void duk__cbor_decode_join_buffers(duk_cbor_decode_context *dec_ctx, duk_idx_t count) { - duk_size_t total_size = 0; - duk_idx_t top = duk_get_top(dec_ctx->thr); - duk_idx_t base = top - count; /* count is >= 1 */ - duk_idx_t idx; - duk_uint8_t *p = NULL; - - DUK_ASSERT(count >= 1); - DUK_ASSERT(top >= count); - - for (;;) { - /* First round: compute total size. - * Second round: copy into place. - */ - for (idx = base; idx < top; idx++) { - duk_uint8_t *buf_data; - duk_size_t buf_size; - - buf_data = (duk_uint8_t *) duk_require_buffer(dec_ctx->thr, idx, &buf_size); - if (p != NULL) { - duk_memcpy_unsafe((void *) p, (const void *) buf_data, buf_size); - p += buf_size; - } else { - total_size += buf_size; - if (DUK_UNLIKELY(total_size < buf_size)) { /* Wrap check. */ - duk__cbor_decode_error(dec_ctx); - } - } - } - - if (p != NULL) { - break; - } else { - p = (duk_uint8_t *) duk_push_fixed_buffer(dec_ctx->thr, total_size); - DUK_ASSERT(p != NULL); - } - } - - duk_replace(dec_ctx->thr, base); - duk_pop_n(dec_ctx->thr, count - 1); -} - -DUK_LOCAL void duk__cbor_decode_and_join_strbuf(duk_cbor_decode_context *dec_ctx, duk_uint8_t expected_base) { - duk_idx_t count = 0; - for (;;) { - if (duk__cbor_decode_checkbreak(dec_ctx)) { - break; - } - duk_require_stack(dec_ctx->thr, 1); - duk__cbor_decode_buffer(dec_ctx, expected_base); - count++; - if (DUK_UNLIKELY(count <= 0)) { /* Wrap check. */ - duk__cbor_decode_error(dec_ctx); - } - } - if (count == 0) { - (void) duk_push_fixed_buffer(dec_ctx->thr, 0); - } else if (count > 1) { - duk__cbor_decode_join_buffers(dec_ctx, count); - } -} - -DUK_LOCAL duk_double_t duk__cbor_decode_half_float(duk_cbor_decode_context *dec_ctx) { - duk_double_union u; - const duk_uint8_t *inp; - duk_int_t expt; - duk_uint_t u16; - duk_uint_t tmp; - duk_double_t res; - - inp = duk__cbor_decode_consume(dec_ctx, 2); - u16 = ((duk_uint_t) inp[0] << 8) + (duk_uint_t) inp[1]; - expt = (duk_int_t) ((u16 >> 10) & 0x1fU) - 15; - - /* Reconstruct IEEE double into little endian order first, then convert - * to host order. - */ - - duk_memzero((void *) &u, sizeof(u)); - - if (expt == -15) { - /* Zero or denormal; but note that half float - * denormals become double normals. - */ - if ((u16 & 0x03ffU) == 0) { - u.uc[7] = inp[0] & 0x80U; - } else { - /* Create denormal by first creating a double that - * contains the denormal bits and a leading implicit - * 1-bit. Then subtract away the implicit 1-bit. - * - * 0.mmmmmmmmmm * 2^-14 - * 1.mmmmmmmmmm 0.... * 2^-14 - * -1.0000000000 0.... * 2^-14 - * - * Double exponent: -14 + 1023 = 0x3f1 - */ - u.uc[7] = 0x3fU; - u.uc[6] = 0x10U + (duk_uint8_t) ((u16 >> 6) & 0x0fU); - u.uc[5] = (duk_uint8_t) ((u16 << 2) & 0xffU); /* Mask is really 0xfcU */ - - duk_dblunion_little_to_host(&u); - res = u.d - 0.00006103515625; /* 2^(-14) */ - if (u16 & 0x8000U) { - res = -res; - } - return res; - } - } else if (expt == 16) { - /* +/- Inf or NaN. */ - if ((u16 & 0x03ffU) == 0) { - u.uc[7] = (inp[0] & 0x80U) + 0x7fU; - u.uc[6] = 0xf0U; - } else { - /* Create a 'quiet NaN' with highest - * bit set (there are some platforms - * where the NaN payload convention is - * the opposite). Keep sign. - */ - u.uc[7] = (inp[0] & 0x80U) + 0x7fU; - u.uc[6] = 0xf8U; - } - } else { - /* Normal. */ - tmp = (inp[0] & 0x80U) ? 0x80000000UL : 0UL; - tmp += (duk_uint_t) (expt + 1023) << 20; - tmp += (duk_uint_t) (inp[0] & 0x03U) << 18; - tmp += (duk_uint_t) (inp[1] & 0xffU) << 10; - u.uc[7] = (tmp >> 24) & 0xffU; - u.uc[6] = (tmp >> 16) & 0xffU; - u.uc[5] = (tmp >> 8) & 0xffU; - u.uc[4] = (tmp >> 0) & 0xffU; - } - - duk_dblunion_little_to_host(&u); - return u.d; -} - -DUK_LOCAL void duk__cbor_decode_string(duk_cbor_decode_context *dec_ctx, duk_uint8_t ib, duk_uint8_t ai) { - /* If the CBOR string data is not valid UTF-8 it is technically - * invalid CBOR. Possible behaviors at least: - * - * 1. Reject the input, i.e. throw TypeError. - * - * 2. Accept the input, but sanitize non-UTF-8 data into UTF-8 - * using U+FFFD replacements. Also it might make sense to - * decode non-BMP codepoints into surrogates for better - * ECMAScript compatibility. - * - * 3. Accept the input as a Duktape string (which are not always - * valid UTF-8), but reject any input that would create a - * Symbol representation. - * - * Current behavior is 3. - */ - - if (ai == 0x1fU) { - duk_uint8_t *buf_data; - duk_size_t buf_size; - - duk__cbor_decode_and_join_strbuf(dec_ctx, 0x60U); - buf_data = (duk_uint8_t *) duk_require_buffer(dec_ctx->thr, -1, &buf_size); - (void) duk_push_lstring(dec_ctx->thr, (const char *) buf_data, buf_size); - duk_remove(dec_ctx->thr, -2); - } else { - duk_uint32_t len; - const duk_uint8_t *inp; - - len = duk__cbor_decode_aival_uint32(dec_ctx, ib); - inp = duk__cbor_decode_consume(dec_ctx, len); - (void) duk_push_lstring(dec_ctx->thr, (const char *) inp, (duk_size_t) len); - } - if (duk_is_symbol(dec_ctx->thr, -1)) { - /* Refuse to create Symbols when decoding. */ - duk__cbor_decode_error(dec_ctx); - } - - /* XXX: Here a Duktape API call to convert input -> utf-8 with - * replacements would be nice. - */ -} - -DUK_LOCAL duk_bool_t duk__cbor_decode_array(duk_cbor_decode_context *dec_ctx, duk_uint8_t ib, duk_uint8_t ai) { - duk_uint32_t idx, len; - - duk__cbor_decode_objarr_entry(dec_ctx); - - /* Support arrays up to 0xfffffffeU in length. 0xffffffff is - * used as an indefinite length marker. - */ - if (ai == 0x1fU) { - len = 0xffffffffUL; - } else { - len = duk__cbor_decode_aival_uint32(dec_ctx, ib); - if (len == 0xffffffffUL) { - goto failure; - } - } - - /* XXX: use bare array? */ - duk_push_array(dec_ctx->thr); - for (idx = 0U;;) { - if (len == 0xffffffffUL && duk__cbor_decode_checkbreak(dec_ctx)) { - break; - } - if (idx == len) { - if (ai == 0x1fU) { - goto failure; - } - break; - } - duk__cbor_decode_value(dec_ctx); - duk_put_prop_index(dec_ctx->thr, -2, (duk_uarridx_t) idx); - idx++; - if (idx == 0U) { - goto failure; /* wrapped */ - } - } - -#if 0 - success: -#endif - duk__cbor_decode_objarr_exit(dec_ctx); - return 1; - -failure: - /* No need to unwind recursion checks, caller will throw. */ - return 0; -} - -DUK_LOCAL duk_bool_t duk__cbor_decode_map(duk_cbor_decode_context *dec_ctx, duk_uint8_t ib, duk_uint8_t ai) { - duk_uint32_t count; - - duk__cbor_decode_objarr_entry(dec_ctx); - - if (ai == 0x1fU) { - count = 0xffffffffUL; - } else { - count = duk__cbor_decode_aival_uint32(dec_ctx, ib); - if (count == 0xffffffffUL) { - goto failure; - } - } - - /* XXX: use bare object? */ - duk_push_object(dec_ctx->thr); - for (;;) { - if (count == 0xffffffffUL) { - if (duk__cbor_decode_checkbreak(dec_ctx)) { - break; - } - } else { - if (count == 0UL) { - break; - } - count--; - } - - /* Non-string keys are coerced to strings, - * possibly leading to overwriting previous - * keys. Last key of a certain coerced name - * wins. If key is an object, it will coerce - * to '[object Object]' which is consistent - * but potentially misleading. One alternative - * would be to skip non-string keys. - */ - duk__cbor_decode_value(dec_ctx); - duk__cbor_decode_value(dec_ctx); - duk_put_prop(dec_ctx->thr, -3); - } - -#if 0 - success: -#endif - duk__cbor_decode_objarr_exit(dec_ctx); - return 1; - -failure: - /* No need to unwind recursion checks, caller will throw. */ - return 0; -} - -DUK_LOCAL duk_double_t duk__cbor_decode_float(duk_cbor_decode_context *dec_ctx) { - duk_float_union u; - const duk_uint8_t *inp; - inp = duk__cbor_decode_consume(dec_ctx, 4); - duk_memcpy((void *) u.uc, (const void *) inp, 4); - duk_fltunion_big_to_host(&u); - return (duk_double_t) u.f; -} - -DUK_LOCAL duk_double_t duk__cbor_decode_double(duk_cbor_decode_context *dec_ctx) { - duk_double_union u; - const duk_uint8_t *inp; - inp = duk__cbor_decode_consume(dec_ctx, 8); - duk_memcpy((void *) u.uc, (const void *) inp, 8); - duk_dblunion_big_to_host(&u); - return u.d; -} - -#if defined(DUK_CBOR_DECODE_FASTPATH) -#define DUK__CBOR_AI (ib & 0x1fU) - -DUK_LOCAL void duk__cbor_decode_value(duk_cbor_decode_context *dec_ctx) { - duk_uint8_t ib; - - /* Any paths potentially recursing back to duk__cbor_decode_value() - * must perform a Duktape value stack growth check. Avoid the check - * here for simple paths like primitive values. - */ - -reread_initial_byte: - DUK_DDD(DUK_DDDPRINT("cbor decode off=%ld len=%ld", (long) dec_ctx->off, (long) dec_ctx->len)); - - ib = duk__cbor_decode_readbyte(dec_ctx); - - /* Full initial byte switch, footprint cost over baseline is ~+1kB. */ - /* XXX: Force full switch with no range check. */ - - switch (ib) { - case 0x00U: - case 0x01U: - case 0x02U: - case 0x03U: - case 0x04U: - case 0x05U: - case 0x06U: - case 0x07U: - case 0x08U: - case 0x09U: - case 0x0aU: - case 0x0bU: - case 0x0cU: - case 0x0dU: - case 0x0eU: - case 0x0fU: - case 0x10U: - case 0x11U: - case 0x12U: - case 0x13U: - case 0x14U: - case 0x15U: - case 0x16U: - case 0x17U: - duk_push_uint(dec_ctx->thr, ib); - break; - case 0x18U: - case 0x19U: - case 0x1aU: - case 0x1bU: - duk__cbor_decode_push_aival_int(dec_ctx, ib, 0 /*negative*/); - break; - case 0x1cU: - case 0x1dU: - case 0x1eU: - case 0x1fU: - goto format_error; - case 0x20U: - case 0x21U: - case 0x22U: - case 0x23U: - case 0x24U: - case 0x25U: - case 0x26U: - case 0x27U: - case 0x28U: - case 0x29U: - case 0x2aU: - case 0x2bU: - case 0x2cU: - case 0x2dU: - case 0x2eU: - case 0x2fU: - case 0x30U: - case 0x31U: - case 0x32U: - case 0x33U: - case 0x34U: - case 0x35U: - case 0x36U: - case 0x37U: - duk_push_int(dec_ctx->thr, -((duk_int_t) ((ib - 0x20U) + 1U))); - break; - case 0x38U: - case 0x39U: - case 0x3aU: - case 0x3bU: - duk__cbor_decode_push_aival_int(dec_ctx, ib, 1 /*negative*/); - break; - case 0x3cU: - case 0x3dU: - case 0x3eU: - case 0x3fU: - goto format_error; - case 0x40U: - case 0x41U: - case 0x42U: - case 0x43U: - case 0x44U: - case 0x45U: - case 0x46U: - case 0x47U: - case 0x48U: - case 0x49U: - case 0x4aU: - case 0x4bU: - case 0x4cU: - case 0x4dU: - case 0x4eU: - case 0x4fU: - case 0x50U: - case 0x51U: - case 0x52U: - case 0x53U: - case 0x54U: - case 0x55U: - case 0x56U: - case 0x57U: - /* XXX: Avoid rewind, we know the length already. */ - DUK_ASSERT(dec_ctx->off > 0U); - dec_ctx->off--; - duk__cbor_decode_buffer(dec_ctx, 0x40U); - break; - case 0x58U: - case 0x59U: - case 0x5aU: - case 0x5bU: - /* XXX: Avoid rewind, decode length inline. */ - DUK_ASSERT(dec_ctx->off > 0U); - dec_ctx->off--; - duk__cbor_decode_buffer(dec_ctx, 0x40U); - break; - case 0x5cU: - case 0x5dU: - case 0x5eU: - goto format_error; - case 0x5fU: - duk__cbor_decode_and_join_strbuf(dec_ctx, 0x40U); - break; - case 0x60U: - case 0x61U: - case 0x62U: - case 0x63U: - case 0x64U: - case 0x65U: - case 0x66U: - case 0x67U: - case 0x68U: - case 0x69U: - case 0x6aU: - case 0x6bU: - case 0x6cU: - case 0x6dU: - case 0x6eU: - case 0x6fU: - case 0x70U: - case 0x71U: - case 0x72U: - case 0x73U: - case 0x74U: - case 0x75U: - case 0x76U: - case 0x77U: - /* XXX: Avoid double decode of length. */ - duk__cbor_decode_string(dec_ctx, ib, DUK__CBOR_AI); - break; - case 0x78U: - case 0x79U: - case 0x7aU: - case 0x7bU: - /* XXX: Avoid double decode of length. */ - duk__cbor_decode_string(dec_ctx, ib, DUK__CBOR_AI); - break; - case 0x7cU: - case 0x7dU: - case 0x7eU: - goto format_error; - case 0x7fU: - duk__cbor_decode_string(dec_ctx, ib, DUK__CBOR_AI); - break; - case 0x80U: - case 0x81U: - case 0x82U: - case 0x83U: - case 0x84U: - case 0x85U: - case 0x86U: - case 0x87U: - case 0x88U: - case 0x89U: - case 0x8aU: - case 0x8bU: - case 0x8cU: - case 0x8dU: - case 0x8eU: - case 0x8fU: - case 0x90U: - case 0x91U: - case 0x92U: - case 0x93U: - case 0x94U: - case 0x95U: - case 0x96U: - case 0x97U: - if (DUK_UNLIKELY(duk__cbor_decode_array(dec_ctx, ib, DUK__CBOR_AI) == 0)) { - goto format_error; - } - break; - case 0x98U: - case 0x99U: - case 0x9aU: - case 0x9bU: - if (DUK_UNLIKELY(duk__cbor_decode_array(dec_ctx, ib, DUK__CBOR_AI) == 0)) { - goto format_error; - } - break; - case 0x9cU: - case 0x9dU: - case 0x9eU: - goto format_error; - case 0x9fU: - if (DUK_UNLIKELY(duk__cbor_decode_array(dec_ctx, ib, DUK__CBOR_AI) == 0)) { - goto format_error; - } - break; - case 0xa0U: - case 0xa1U: - case 0xa2U: - case 0xa3U: - case 0xa4U: - case 0xa5U: - case 0xa6U: - case 0xa7U: - case 0xa8U: - case 0xa9U: - case 0xaaU: - case 0xabU: - case 0xacU: - case 0xadU: - case 0xaeU: - case 0xafU: - case 0xb0U: - case 0xb1U: - case 0xb2U: - case 0xb3U: - case 0xb4U: - case 0xb5U: - case 0xb6U: - case 0xb7U: - if (DUK_UNLIKELY(duk__cbor_decode_map(dec_ctx, ib, DUK__CBOR_AI) == 0)) { - goto format_error; - } - break; - case 0xb8U: - case 0xb9U: - case 0xbaU: - case 0xbbU: - if (DUK_UNLIKELY(duk__cbor_decode_map(dec_ctx, ib, DUK__CBOR_AI) == 0)) { - goto format_error; - } - break; - case 0xbcU: - case 0xbdU: - case 0xbeU: - goto format_error; - case 0xbfU: - if (DUK_UNLIKELY(duk__cbor_decode_map(dec_ctx, ib, DUK__CBOR_AI) == 0)) { - goto format_error; - } - break; - case 0xc0U: - case 0xc1U: - case 0xc2U: - case 0xc3U: - case 0xc4U: - case 0xc5U: - case 0xc6U: - case 0xc7U: - case 0xc8U: - case 0xc9U: - case 0xcaU: - case 0xcbU: - case 0xccU: - case 0xcdU: - case 0xceU: - case 0xcfU: - case 0xd0U: - case 0xd1U: - case 0xd2U: - case 0xd3U: - case 0xd4U: - case 0xd5U: - case 0xd6U: - case 0xd7U: - /* Tag 0-23: drop. */ - goto reread_initial_byte; - case 0xd8U: - case 0xd9U: - case 0xdaU: - case 0xdbU: - duk__cbor_decode_skip_aival_int(dec_ctx, ib); - goto reread_initial_byte; - case 0xdcU: - case 0xddU: - case 0xdeU: - case 0xdfU: - goto format_error; - case 0xe0U: - goto format_error; - case 0xe1U: - goto format_error; - case 0xe2U: - goto format_error; - case 0xe3U: - goto format_error; - case 0xe4U: - goto format_error; - case 0xe5U: - goto format_error; - case 0xe6U: - goto format_error; - case 0xe7U: - goto format_error; - case 0xe8U: - goto format_error; - case 0xe9U: - goto format_error; - case 0xeaU: - goto format_error; - case 0xebU: - goto format_error; - case 0xecU: - goto format_error; - case 0xedU: - goto format_error; - case 0xeeU: - goto format_error; - case 0xefU: - goto format_error; - case 0xf0U: - goto format_error; - case 0xf1U: - goto format_error; - case 0xf2U: - goto format_error; - case 0xf3U: - goto format_error; - case 0xf4U: - duk_push_false(dec_ctx->thr); - break; - case 0xf5U: - duk_push_true(dec_ctx->thr); - break; - case 0xf6U: - duk_push_null(dec_ctx->thr); - break; - case 0xf7U: - duk_push_undefined(dec_ctx->thr); - break; - case 0xf8U: - /* Simple value 32-255, nothing defined yet, so reject. */ - goto format_error; - case 0xf9U: { - duk_double_t d; - d = duk__cbor_decode_half_float(dec_ctx); - duk_push_number(dec_ctx->thr, d); - break; - } - case 0xfaU: { - duk_double_t d; - d = duk__cbor_decode_float(dec_ctx); - duk_push_number(dec_ctx->thr, d); - break; - } - case 0xfbU: { - duk_double_t d; - d = duk__cbor_decode_double(dec_ctx); - duk_push_number(dec_ctx->thr, d); - break; - } - case 0xfcU: - case 0xfdU: - case 0xfeU: - case 0xffU: - goto format_error; - } /* end switch */ - - return; - -format_error: - duk__cbor_decode_error(dec_ctx); -} -#else /* DUK_CBOR_DECODE_FASTPATH */ -DUK_LOCAL void duk__cbor_decode_value(duk_cbor_decode_context *dec_ctx) { - duk_uint8_t ib, mt, ai; - - /* Any paths potentially recursing back to duk__cbor_decode_value() - * must perform a Duktape value stack growth check. Avoid the check - * here for simple paths like primitive values. - */ - -reread_initial_byte: - DUK_DDD(DUK_DDDPRINT("cbor decode off=%ld len=%ld", (long) dec_ctx->off, (long) dec_ctx->len)); - - ib = duk__cbor_decode_readbyte(dec_ctx); - mt = ib >> 5U; - ai = ib & 0x1fU; - - /* Additional information in [24,27] = [0x18,0x1b] has relatively - * uniform handling for all major types: read 1/2/4/8 additional - * bytes. For major type 7 the 1-byte value is a 'simple type', and - * 2/4/8-byte values are floats. For other major types the 1/2/4/8 - * byte values are integers. The lengths are uniform, but the typing - * is not. - */ - - switch (mt) { - case 0U: { /* unsigned integer */ - duk__cbor_decode_push_aival_int(dec_ctx, ib, 0 /*negative*/); - break; - } - case 1U: { /* negative integer */ - duk__cbor_decode_push_aival_int(dec_ctx, ib, 1 /*negative*/); - break; - } - case 2U: { /* byte string */ - if (ai == 0x1fU) { - duk__cbor_decode_and_join_strbuf(dec_ctx, 0x40U); - } else { - duk__cbor_decode_rewind(dec_ctx, 1U); - duk__cbor_decode_buffer(dec_ctx, 0x40U); - } - break; - } - case 3U: { /* text string */ - duk__cbor_decode_string(dec_ctx, ib, ai); - break; - } - case 4U: { /* array of data items */ - if (DUK_UNLIKELY(duk__cbor_decode_array(dec_ctx, ib, ai) == 0)) { - goto format_error; - } - break; - } - case 5U: { /* map of pairs of data items */ - if (DUK_UNLIKELY(duk__cbor_decode_map(dec_ctx, ib, ai) == 0)) { - goto format_error; - } - break; - } - case 6U: { /* semantic tagging */ - /* Tags are ignored now, re-read initial byte. A tagged - * value may itself be tagged (an unlimited number of times) - * so keep on peeling away tags. - */ - duk__cbor_decode_skip_aival_int(dec_ctx, ib); - goto reread_initial_byte; - } - case 7U: { /* floating point numbers, simple data types, break; other */ - switch (ai) { - case 0x14U: { - duk_push_false(dec_ctx->thr); - break; - } - case 0x15U: { - duk_push_true(dec_ctx->thr); - break; - } - case 0x16U: { - duk_push_null(dec_ctx->thr); - break; - } - case 0x17U: { - duk_push_undefined(dec_ctx->thr); - break; - } - case 0x18U: { /* more simple values (1 byte) */ - /* Simple value encoded in additional byte (none - * are defined so far). RFC 7049 states that the - * follow-up byte must be 32-255 to minimize - * confusion. So, a non-shortest encoding like - * f815 (= true, shortest encoding f5) must be - * rejected. cbor.me tester rejects f815, but - * e.g. Python CBOR binding decodes it as true. - */ - goto format_error; - } - case 0x19U: { /* half-float (2 bytes) */ - duk_double_t d; - d = duk__cbor_decode_half_float(dec_ctx); - duk_push_number(dec_ctx->thr, d); - break; - } - case 0x1aU: { /* float (4 bytes) */ - duk_double_t d; - d = duk__cbor_decode_float(dec_ctx); - duk_push_number(dec_ctx->thr, d); - break; - } - case 0x1bU: { /* double (8 bytes) */ - duk_double_t d; - d = duk__cbor_decode_double(dec_ctx); - duk_push_number(dec_ctx->thr, d); - break; - } - case 0xffU: /* unexpected break */ - default: { - goto format_error; - } - } /* end switch */ - break; - } - default: { - goto format_error; /* will never actually occur */ - } - } /* end switch */ - - return; - -format_error: - duk__cbor_decode_error(dec_ctx); -} -#endif /* DUK_CBOR_DECODE_FASTPATH */ - -DUK_LOCAL void duk__cbor_encode(duk_hthread *thr, duk_idx_t idx, duk_uint_t encode_flags) { - duk_cbor_encode_context enc_ctx; - duk_uint8_t *buf; - - DUK_UNREF(encode_flags); - - idx = duk_require_normalize_index(thr, idx); - - enc_ctx.thr = thr; - enc_ctx.idx_buf = duk_get_top(thr); - - enc_ctx.len = 64; - buf = (duk_uint8_t *) duk_push_dynamic_buffer(thr, enc_ctx.len); - enc_ctx.ptr = buf; - enc_ctx.buf = buf; - enc_ctx.buf_end = buf + enc_ctx.len; - - enc_ctx.recursion_depth = 0; - enc_ctx.recursion_limit = DUK_USE_CBOR_ENC_RECLIMIT; - - duk_dup(thr, idx); - duk__cbor_encode_req_stack(&enc_ctx); - duk__cbor_encode_value(&enc_ctx); - DUK_ASSERT(enc_ctx.recursion_depth == 0); - duk_resize_buffer(enc_ctx.thr, enc_ctx.idx_buf, (duk_size_t) (enc_ctx.ptr - enc_ctx.buf)); - duk_replace(thr, idx); -} - -DUK_LOCAL void duk__cbor_decode(duk_hthread *thr, duk_idx_t idx, duk_uint_t decode_flags) { - duk_cbor_decode_context dec_ctx; - - DUK_UNREF(decode_flags); - - /* Suppress compile warnings for functions only needed with e.g. - * asserts enabled. - */ - DUK_UNREF(duk__cbor_get_reserve); - - idx = duk_require_normalize_index(thr, idx); - - dec_ctx.thr = thr; - dec_ctx.buf = (const duk_uint8_t *) duk_require_buffer_data(thr, idx, &dec_ctx.len); - dec_ctx.off = 0; - /* dec_ctx.len: set above */ - - dec_ctx.recursion_depth = 0; - dec_ctx.recursion_limit = DUK_USE_CBOR_DEC_RECLIMIT; - - duk__cbor_decode_req_stack(&dec_ctx); - duk__cbor_decode_value(&dec_ctx); - DUK_ASSERT(dec_ctx.recursion_depth == 0); - if (dec_ctx.off != dec_ctx.len) { - (void) duk_type_error(thr, "trailing garbage"); - } - - duk_replace(thr, idx); -} - -#else /* DUK_USE_CBOR_SUPPORT */ - -DUK_LOCAL void duk__cbor_encode(duk_hthread *thr, duk_idx_t idx, duk_uint_t encode_flags) { - DUK_UNREF(idx); - DUK_UNREF(encode_flags); - DUK_ERROR_UNSUPPORTED(thr); -} - -DUK_LOCAL void duk__cbor_decode(duk_hthread *thr, duk_idx_t idx, duk_uint_t decode_flags) { - DUK_UNREF(idx); - DUK_UNREF(decode_flags); - DUK_ERROR_UNSUPPORTED(thr); -} - -#endif /* DUK_USE_CBOR_SUPPORT */ - -/* - * Public APIs - */ - -DUK_EXTERNAL void duk_cbor_encode(duk_hthread *thr, duk_idx_t idx, duk_uint_t encode_flags) { - DUK_ASSERT_API_ENTRY(thr); - duk__cbor_encode(thr, idx, encode_flags); -} -DUK_EXTERNAL void duk_cbor_decode(duk_hthread *thr, duk_idx_t idx, duk_uint_t decode_flags) { - DUK_ASSERT_API_ENTRY(thr); - duk__cbor_decode(thr, idx, decode_flags); -} - -#if defined(DUK_USE_CBOR_BUILTIN) -#if defined(DUK_USE_CBOR_SUPPORT) -DUK_INTERNAL duk_ret_t duk_bi_cbor_encode(duk_hthread *thr) { - DUK_ASSERT_TOP(thr, 1); - - duk__cbor_encode(thr, -1, 0 /*flags*/); - - /* Produce an ArrayBuffer by first decoding into a plain buffer which - * mimics a Uint8Array and gettings its .buffer property. - */ - /* XXX: shortcut */ - (void) duk_get_prop_stridx(thr, -1, DUK_STRIDX_LC_BUFFER); - return 1; -} - -DUK_INTERNAL duk_ret_t duk_bi_cbor_decode(duk_hthread *thr) { - DUK_ASSERT_TOP(thr, 1); - - duk__cbor_decode(thr, -1, 0 /*flags*/); - return 1; -} -#else /* DUK_USE_CBOR_SUPPORT */ -DUK_INTERNAL duk_ret_t duk_bi_cbor_encode(duk_hthread *thr) { - DUK_ERROR_UNSUPPORTED(thr); - DUK_WO_NORETURN(return 0;); -} -DUK_INTERNAL duk_ret_t duk_bi_cbor_decode(duk_hthread *thr) { - DUK_ERROR_UNSUPPORTED(thr); - DUK_WO_NORETURN(return 0;); -} -#endif /* DUK_USE_CBOR_SUPPORT */ -#endif /* DUK_USE_CBOR_BUILTIN */ - -/* automatic undefs */ -#undef DUK__CBOR_AI -#line 1 "duk_bi_date.c" -/* - * Date built-ins - * - * Unlike most built-ins, Date has some platform dependencies for getting - * UTC time, converting between UTC and local time, and parsing and - * formatting time values. These are all abstracted behind DUK_USE_xxx - * config options. There are built-in platform specific providers for - * POSIX and Windows, but external providers can also be used. - * - * See doc/datetime.rst. - * - */ - -/* #include duk_internal.h -> already included */ - -/* XXX: currently defines unnecessary symbols when DUK_USE_DATE_BUILTIN is disabled. */ - -/* - * Forward declarations - */ - -DUK_LOCAL_DECL duk_double_t duk__push_this_get_timeval_tzoffset(duk_hthread *thr, duk_small_uint_t flags, duk_int_t *out_tzoffset); -DUK_LOCAL_DECL duk_double_t duk__push_this_get_timeval(duk_hthread *thr, duk_small_uint_t flags); -DUK_LOCAL_DECL void duk__twodigit_year_fixup(duk_hthread *thr, duk_idx_t idx_val); -DUK_LOCAL_DECL duk_ret_t duk__set_this_timeval_from_dparts(duk_hthread *thr, duk_double_t *dparts, duk_small_uint_t flags); - -/* - * Other file level defines - */ - -/* Debug macro to print all parts and dparts (used manually because of debug level). */ -#define DUK__DPRINT_PARTS_AND_DPARTS(parts, dparts) \ - do { \ - DUK_D(DUK_DPRINT("parts: %ld %ld %ld %ld %ld %ld %ld %ld, dparts: %lf %lf %lf %lf %lf %lf %lf %lf", \ - (long) (parts)[0], \ - (long) (parts)[1], \ - (long) (parts)[2], \ - (long) (parts)[3], \ - (long) (parts)[4], \ - (long) (parts)[5], \ - (long) (parts)[6], \ - (long) (parts)[7], \ - (double) (dparts)[0], \ - (double) (dparts)[1], \ - (double) (dparts)[2], \ - (double) (dparts)[3], \ - (double) (dparts)[4], \ - (double) (dparts)[5], \ - (double) (dparts)[6], \ - (double) (dparts)[7])); \ - } while (0) -#define DUK__DPRINT_PARTS(parts) \ - do { \ - DUK_D(DUK_DPRINT("parts: %ld %ld %ld %ld %ld %ld %ld %ld", \ - (long) (parts)[0], \ - (long) (parts)[1], \ - (long) (parts)[2], \ - (long) (parts)[3], \ - (long) (parts)[4], \ - (long) (parts)[5], \ - (long) (parts)[6], \ - (long) (parts)[7])); \ - } while (0) -#define DUK__DPRINT_DPARTS(dparts) \ - do { \ - DUK_D(DUK_DPRINT("dparts: %lf %lf %lf %lf %lf %lf %lf %lf", \ - (double) (dparts)[0], \ - (double) (dparts)[1], \ - (double) (dparts)[2], \ - (double) (dparts)[3], \ - (double) (dparts)[4], \ - (double) (dparts)[5], \ - (double) (dparts)[6], \ - (double) (dparts)[7])); \ - } while (0) - -/* Equivalent year for DST calculations outside [1970,2038[ range, see - * E5 Section 15.9.1.8. Equivalent year has the same leap-year-ness and - * starts with the same weekday on Jan 1. - * https://bugzilla.mozilla.org/show_bug.cgi?id=351066 - */ -#define DUK__YEAR(x) ((duk_uint8_t) ((x) -1970)) -DUK_LOCAL duk_uint8_t duk__date_equivyear[14] = { -#if 1 - /* This is based on V8 EquivalentYear() algorithm (see util/genequivyear.py): - * http://code.google.com/p/v8/source/browse/trunk/src/date.h#146 - */ - - /* non-leap year: sunday, monday, ... */ - DUK__YEAR(2023), - DUK__YEAR(2035), - DUK__YEAR(2019), - DUK__YEAR(2031), - DUK__YEAR(2015), - DUK__YEAR(2027), - DUK__YEAR(2011), - - /* leap year: sunday, monday, ... */ - DUK__YEAR(2012), - DUK__YEAR(2024), - DUK__YEAR(2008), - DUK__YEAR(2020), - DUK__YEAR(2032), - DUK__YEAR(2016), - DUK__YEAR(2028) -#endif - -#if 0 - /* This is based on Rhino EquivalentYear() algorithm: - * https://github.com/mozilla/rhino/blob/f99cc11d616f0cdda2c42bde72b3484df6182947/src/org/mozilla/javascript/NativeDate.java - */ - - /* non-leap year: sunday, monday, ... */ - DUK__YEAR(1978), DUK__YEAR(1973), DUK__YEAR(1985), DUK__YEAR(1986), - DUK__YEAR(1981), DUK__YEAR(1971), DUK__YEAR(1977), - - /* leap year: sunday, monday, ... */ - DUK__YEAR(1984), DUK__YEAR(1996), DUK__YEAR(1980), DUK__YEAR(1992), - DUK__YEAR(1976), DUK__YEAR(1988), DUK__YEAR(1972) -#endif -}; - -/* - * ISO 8601 subset parser. - */ - -/* Parser part count. */ -#define DUK__NUM_ISO8601_PARSER_PARTS 9 - -/* Parser part indices. */ -#define DUK__PI_YEAR 0 -#define DUK__PI_MONTH 1 -#define DUK__PI_DAY 2 -#define DUK__PI_HOUR 3 -#define DUK__PI_MINUTE 4 -#define DUK__PI_SECOND 5 -#define DUK__PI_MILLISECOND 6 -#define DUK__PI_TZHOUR 7 -#define DUK__PI_TZMINUTE 8 - -/* Parser part masks. */ -#define DUK__PM_YEAR (1 << DUK__PI_YEAR) -#define DUK__PM_MONTH (1 << DUK__PI_MONTH) -#define DUK__PM_DAY (1 << DUK__PI_DAY) -#define DUK__PM_HOUR (1 << DUK__PI_HOUR) -#define DUK__PM_MINUTE (1 << DUK__PI_MINUTE) -#define DUK__PM_SECOND (1 << DUK__PI_SECOND) -#define DUK__PM_MILLISECOND (1 << DUK__PI_MILLISECOND) -#define DUK__PM_TZHOUR (1 << DUK__PI_TZHOUR) -#define DUK__PM_TZMINUTE (1 << DUK__PI_TZMINUTE) - -/* Parser separator indices. */ -#define DUK__SI_PLUS 0 -#define DUK__SI_MINUS 1 -#define DUK__SI_T 2 -#define DUK__SI_SPACE 3 -#define DUK__SI_COLON 4 -#define DUK__SI_PERIOD 5 -#define DUK__SI_Z 6 -#define DUK__SI_NUL 7 - -/* Parser separator masks. */ -#define DUK__SM_PLUS (1 << DUK__SI_PLUS) -#define DUK__SM_MINUS (1 << DUK__SI_MINUS) -#define DUK__SM_T (1 << DUK__SI_T) -#define DUK__SM_SPACE (1 << DUK__SI_SPACE) -#define DUK__SM_COLON (1 << DUK__SI_COLON) -#define DUK__SM_PERIOD (1 << DUK__SI_PERIOD) -#define DUK__SM_Z (1 << DUK__SI_Z) -#define DUK__SM_NUL (1 << DUK__SI_NUL) - -/* Rule control flags. */ -#define DUK__CF_NEG (1 << 0) /* continue matching, set neg_tzoffset flag */ -#define DUK__CF_ACCEPT (1 << 1) /* accept string */ -#define DUK__CF_ACCEPT_NUL (1 << 2) /* accept string if next char is NUL (otherwise reject) */ - -#define DUK__PACK_RULE(partmask, sepmask, nextpart, flags) \ - ((duk_uint32_t) (partmask) + (((duk_uint32_t) (sepmask)) << 9) + (((duk_uint32_t) (nextpart)) << 17) + \ - (((duk_uint32_t) (flags)) << 21)) - -#define DUK__UNPACK_RULE(rule, var_nextidx, var_flags) \ - do { \ - (var_nextidx) = (duk_small_uint_t) (((rule) >> 17) & 0x0f); \ - (var_flags) = (duk_small_uint_t) ((rule) >> 21); \ - } while (0) - -#define DUK__RULE_MASK_PART_SEP 0x1ffffUL - -/* Matching separator index is used in the control table */ -DUK_LOCAL const duk_uint8_t duk__parse_iso8601_seps[] = { - DUK_ASC_PLUS /*0*/, DUK_ASC_MINUS /*1*/, DUK_ASC_UC_T /*2*/, DUK_ASC_SPACE /*3*/, - DUK_ASC_COLON /*4*/, DUK_ASC_PERIOD /*5*/, DUK_ASC_UC_Z /*6*/, DUK_ASC_NUL /*7*/ -}; - -/* Rule table: first matching rule is used to determine what to do next. */ -DUK_LOCAL const duk_uint32_t duk__parse_iso8601_control[] = { - DUK__PACK_RULE(DUK__PM_YEAR, DUK__SM_MINUS, DUK__PI_MONTH, 0), - DUK__PACK_RULE(DUK__PM_MONTH, DUK__SM_MINUS, DUK__PI_DAY, 0), - DUK__PACK_RULE(DUK__PM_YEAR | DUK__PM_MONTH | DUK__PM_DAY, DUK__SM_T | DUK__SM_SPACE, DUK__PI_HOUR, 0), - DUK__PACK_RULE(DUK__PM_HOUR, DUK__SM_COLON, DUK__PI_MINUTE, 0), - DUK__PACK_RULE(DUK__PM_MINUTE, DUK__SM_COLON, DUK__PI_SECOND, 0), - DUK__PACK_RULE(DUK__PM_SECOND, DUK__SM_PERIOD, DUK__PI_MILLISECOND, 0), - DUK__PACK_RULE(DUK__PM_TZHOUR, DUK__SM_COLON, DUK__PI_TZMINUTE, 0), - DUK__PACK_RULE(DUK__PM_YEAR | DUK__PM_MONTH | DUK__PM_DAY | DUK__PM_HOUR /*Note1*/ | DUK__PM_MINUTE | DUK__PM_SECOND | - DUK__PM_MILLISECOND, - DUK__SM_PLUS, - DUK__PI_TZHOUR, - 0), - DUK__PACK_RULE(DUK__PM_YEAR | DUK__PM_MONTH | DUK__PM_DAY | DUK__PM_HOUR /*Note1*/ | DUK__PM_MINUTE | DUK__PM_SECOND | - DUK__PM_MILLISECOND, - DUK__SM_MINUS, - DUK__PI_TZHOUR, - DUK__CF_NEG), - DUK__PACK_RULE(DUK__PM_YEAR | DUK__PM_MONTH | DUK__PM_DAY | DUK__PM_HOUR /*Note1*/ | DUK__PM_MINUTE | DUK__PM_SECOND | - DUK__PM_MILLISECOND, - DUK__SM_Z, - 0, - DUK__CF_ACCEPT_NUL), - DUK__PACK_RULE(DUK__PM_YEAR | DUK__PM_MONTH | DUK__PM_DAY | DUK__PM_HOUR /*Note1*/ | DUK__PM_MINUTE | DUK__PM_SECOND | - DUK__PM_MILLISECOND | DUK__PM_TZHOUR /*Note2*/ | DUK__PM_TZMINUTE, - DUK__SM_NUL, - 0, - DUK__CF_ACCEPT) - - /* Note1: the specification doesn't require matching a time form with - * just hours ("HH"), but we accept it here, e.g. "2012-01-02T12Z". - * - * Note2: the specification doesn't require matching a timezone offset - * with just hours ("HH"), but accept it here, e.g. "2012-01-02T03:04:05+02" - */ -}; - -DUK_LOCAL duk_bool_t duk__parse_string_iso8601_subset(duk_hthread *thr, const char *str) { - duk_int_t parts[DUK__NUM_ISO8601_PARSER_PARTS]; - duk_double_t dparts[DUK_DATE_IDX_NUM_PARTS]; - duk_double_t d; - const duk_uint8_t *p; - duk_small_uint_t part_idx = 0; - duk_int_t accum = 0; - duk_small_uint_t ndigits = 0; - duk_bool_t neg_year = 0; - duk_bool_t neg_tzoffset = 0; - duk_uint_fast8_t ch; - duk_small_uint_t i; - - /* During parsing, month and day are one-based; set defaults here. */ - duk_memzero(parts, sizeof(parts)); - DUK_ASSERT(parts[DUK_DATE_IDX_YEAR] == 0); /* don't care value, year is mandatory */ - parts[DUK_DATE_IDX_MONTH] = 1; - parts[DUK_DATE_IDX_DAY] = 1; - - /* Special handling for year sign. */ - p = (const duk_uint8_t *) str; - ch = p[0]; - if (ch == DUK_ASC_PLUS) { - p++; - } else if (ch == DUK_ASC_MINUS) { - neg_year = 1; - p++; - } - - for (;;) { - ch = *p++; - DUK_DDD(DUK_DDDPRINT("parsing, part_idx=%ld, char=%ld ('%c')", - (long) part_idx, - (long) ch, - (int) ((ch >= 0x20 && ch <= 0x7e) ? ch : DUK_ASC_QUESTION))); - - if (ch >= DUK_ASC_0 && ch <= DUK_ASC_9) { - if (ndigits >= 9) { - DUK_DDD(DUK_DDDPRINT("too many digits -> reject")); - goto reject; - } - if (part_idx == DUK__PI_MILLISECOND && ndigits >= 3) { - /* ignore millisecond fractions after 3 */ - } else { - accum = accum * 10 + ((duk_int_t) ch) - ((duk_int_t) DUK_ASC_0) + 0x00; - ndigits++; - } - } else { - duk_uint_fast32_t match_val; - duk_small_uint_t sep_idx; - - if (ndigits <= 0) { - goto reject; - } - if (part_idx == DUK__PI_MILLISECOND) { - /* complete the millisecond field */ - while (ndigits < 3) { - accum *= 10; - ndigits++; - } - } - parts[part_idx] = accum; - DUK_DDD(DUK_DDDPRINT("wrote part %ld -> value %ld", (long) part_idx, (long) accum)); - - accum = 0; - ndigits = 0; - - for (i = 0; i < (duk_small_uint_t) (sizeof(duk__parse_iso8601_seps) / sizeof(duk_uint8_t)); i++) { - if (duk__parse_iso8601_seps[i] == ch) { - break; - } - } - if (i == (duk_small_uint_t) (sizeof(duk__parse_iso8601_seps) / sizeof(duk_uint8_t))) { - DUK_DDD(DUK_DDDPRINT("separator character doesn't match -> reject")); - goto reject; - } - - sep_idx = i; - match_val = (1UL << part_idx) + (1UL << (sep_idx + 9)); /* match against rule part/sep bits */ - - for (i = 0; i < (duk_small_uint_t) (sizeof(duk__parse_iso8601_control) / sizeof(duk_uint32_t)); i++) { - duk_uint_fast32_t rule = duk__parse_iso8601_control[i]; - duk_small_uint_t nextpart; - duk_small_uint_t cflags; - - DUK_DDD(DUK_DDDPRINT("part_idx=%ld, sep_idx=%ld, match_val=0x%08lx, considering rule=0x%08lx", - (long) part_idx, - (long) sep_idx, - (unsigned long) match_val, - (unsigned long) rule)); - - if ((rule & match_val) != match_val) { - continue; - } - - DUK__UNPACK_RULE(rule, nextpart, cflags); - - DUK_DDD(DUK_DDDPRINT("rule match -> part_idx=%ld, sep_idx=%ld, match_val=0x%08lx, " - "rule=0x%08lx -> nextpart=%ld, cflags=0x%02lx", - (long) part_idx, - (long) sep_idx, - (unsigned long) match_val, - (unsigned long) rule, - (long) nextpart, - (unsigned long) cflags)); - - if (cflags & DUK__CF_NEG) { - neg_tzoffset = 1; - } - - if (cflags & DUK__CF_ACCEPT) { - goto accept; - } - - if (cflags & DUK__CF_ACCEPT_NUL) { - DUK_ASSERT(*(p - 1) != (char) 0); - if (*p == DUK_ASC_NUL) { - goto accept; - } - goto reject; - } - - part_idx = nextpart; - break; - } /* rule match */ - - if (i == (duk_small_uint_t) (sizeof(duk__parse_iso8601_control) / sizeof(duk_uint32_t))) { - DUK_DDD(DUK_DDDPRINT("no rule matches -> reject")); - goto reject; - } - - if (ch == 0) { - /* This shouldn't be necessary, but check just in case - * to avoid any chance of overruns. - */ - DUK_DDD(DUK_DDDPRINT("NUL after rule matching (should not happen) -> reject")); - goto reject; - } - } /* if-digit-else-ctrl */ - } /* char loop */ - - /* We should never exit the loop above. */ - DUK_UNREACHABLE(); - -reject: - DUK_DDD(DUK_DDDPRINT("reject")); - return 0; - -accept: - DUK_DDD(DUK_DDDPRINT("accept")); - - /* Apply timezone offset to get the main parts in UTC */ - if (neg_year) { - parts[DUK__PI_YEAR] = -parts[DUK__PI_YEAR]; - } - if (neg_tzoffset) { - parts[DUK__PI_HOUR] += parts[DUK__PI_TZHOUR]; - parts[DUK__PI_MINUTE] += parts[DUK__PI_TZMINUTE]; - } else { - parts[DUK__PI_HOUR] -= parts[DUK__PI_TZHOUR]; - parts[DUK__PI_MINUTE] -= parts[DUK__PI_TZMINUTE]; - } - parts[DUK__PI_MONTH] -= 1; /* zero-based month */ - parts[DUK__PI_DAY] -= 1; /* zero-based day */ - - /* Use double parts, they tolerate unnormalized time. - * - * Note: DUK_DATE_IDX_WEEKDAY is initialized with a bogus value (DUK__PI_TZHOUR) - * on purpose. It won't be actually used by duk_bi_date_get_timeval_from_dparts(), - * but will make the value initialized just in case, and avoid any - * potential for Valgrind issues. - */ - for (i = 0; i < DUK_DATE_IDX_NUM_PARTS; i++) { - DUK_DDD(DUK_DDDPRINT("part[%ld] = %ld", (long) i, (long) parts[i])); - dparts[i] = parts[i]; - } - - d = duk_bi_date_get_timeval_from_dparts(dparts, 0 /*flags*/); - duk_push_number(thr, d); - return 1; -} - -/* - * Date/time parsing helper. - * - * Parse a datetime string into a time value. We must first try to parse - * the input according to the standard format in E5.1 Section 15.9.1.15. - * If that fails, we can try to parse using custom parsing, which can - * either be platform neutral (custom code) or platform specific (using - * existing platform API calls). - * - * Note in particular that we must parse whatever toString(), toUTCString(), - * and toISOString() can produce; see E5.1 Section 15.9.4.2. - * - * Returns 1 to allow tail calling. - * - * There is much room for improvement here with respect to supporting - * alternative datetime formats. For instance, V8 parses '2012-01-01' as - * UTC and '2012/01/01' as local time. - */ - -DUK_LOCAL duk_ret_t duk__parse_string(duk_hthread *thr, const char *str) { - /* XXX: there is a small risk here: because the ISO 8601 parser is - * very loose, it may end up parsing some datetime values which - * would be better parsed with a platform specific parser. - */ - - DUK_ASSERT(str != NULL); - DUK_DDD(DUK_DDDPRINT("parse datetime from string '%s'", (const char *) str)); - - if (duk__parse_string_iso8601_subset(thr, str) != 0) { - return 1; - } - -#if defined(DUK_USE_DATE_PARSE_STRING) - /* Contract, either: - * - Push value on stack and return 1 - * - Don't push anything on stack and return 0 - */ - - if (DUK_USE_DATE_PARSE_STRING(thr, str) != 0) { - return 1; - } -#else - /* No platform-specific parsing, this is not an error. */ -#endif - - duk_push_nan(thr); - return 1; -} - -/* - * Calendar helpers - * - * Some helpers are used for getters and can operate on normalized values - * which can be represented with 32-bit signed integers. Other helpers are - * needed by setters and operate on un-normalized double values, must watch - * out for non-finite numbers etc. - */ - -DUK_LOCAL duk_uint8_t duk__days_in_month[12] = { (duk_uint8_t) 31, (duk_uint8_t) 28, (duk_uint8_t) 31, (duk_uint8_t) 30, - (duk_uint8_t) 31, (duk_uint8_t) 30, (duk_uint8_t) 31, (duk_uint8_t) 31, - (duk_uint8_t) 30, (duk_uint8_t) 31, (duk_uint8_t) 30, (duk_uint8_t) 31 }; - -/* Maximum iteration count for computing UTC-to-local time offset when - * creating an ECMAScript time value from local parts. - */ -#define DUK__LOCAL_TZOFFSET_MAXITER 4 - -/* Because 'day since epoch' can be negative and is used to compute weekday - * using a modulo operation, add this multiple of 7 to avoid negative values - * when year is below 1970 epoch. ECMAScript time values are restricted to - * +/- 100 million days from epoch, so this adder fits nicely into 32 bits. - * Round to a multiple of 7 (= floor(100000000 / 7) * 7) and add margin. - */ -#define DUK__WEEKDAY_MOD_ADDER (20000000 * 7) /* 0x08583b00 */ - -DUK_INTERNAL duk_bool_t duk_bi_date_is_leap_year(duk_int_t year) { - if ((year % 4) != 0) { - return 0; - } - if ((year % 100) != 0) { - return 1; - } - if ((year % 400) != 0) { - return 0; - } - return 1; -} - -DUK_INTERNAL duk_bool_t duk_bi_date_timeval_in_valid_range(duk_double_t x) { - return (x >= -DUK_DATE_MSEC_100M_DAYS && x <= DUK_DATE_MSEC_100M_DAYS); -} - -DUK_INTERNAL duk_bool_t duk_bi_date_timeval_in_leeway_range(duk_double_t x) { - return (x >= -DUK_DATE_MSEC_100M_DAYS_LEEWAY && x <= DUK_DATE_MSEC_100M_DAYS_LEEWAY); -} - -DUK_INTERNAL duk_bool_t duk_bi_date_year_in_valid_range(duk_double_t x) { - return (x >= DUK_DATE_MIN_ECMA_YEAR && x <= DUK_DATE_MAX_ECMA_YEAR); -} - -DUK_LOCAL duk_double_t duk__timeclip(duk_double_t x) { - if (!DUK_ISFINITE(x)) { - return DUK_DOUBLE_NAN; - } - - if (!duk_bi_date_timeval_in_valid_range(x)) { - return DUK_DOUBLE_NAN; - } - - x = duk_js_tointeger_number(x); - - /* Here we'd have the option to normalize -0 to +0. */ - return x; -} - -/* Integer division which floors also negative values correctly. */ -DUK_LOCAL duk_int_t duk__div_floor(duk_int_t a, duk_int_t b) { - DUK_ASSERT(b > 0); - if (a >= 0) { - return a / b; - } else { - /* e.g. a = -4, b = 5 --> -4 - 5 + 1 / 5 --> -8 / 5 --> -1 - * a = -5, b = 5 --> -5 - 5 + 1 / 5 --> -9 / 5 --> -1 - * a = -6, b = 5 --> -6 - 5 + 1 / 5 --> -10 / 5 --> -2 - */ - return (a - b + 1) / b; - } -} - -/* Compute day number of the first day of a given year. */ -DUK_LOCAL duk_int_t duk__day_from_year(duk_int_t year) { - /* Note: in integer arithmetic, (x / 4) is same as floor(x / 4) for non-negative - * values, but is incorrect for negative ones. - */ - return 365 * (year - 1970) + duk__div_floor(year - 1969, 4) - duk__div_floor(year - 1901, 100) + - duk__div_floor(year - 1601, 400); -} - -/* Given a day number, determine year and day-within-year. */ -DUK_LOCAL duk_int_t duk__year_from_day(duk_int_t day, duk_small_int_t *out_day_within_year) { - duk_int_t year; - duk_int_t diff_days; - - /* estimate year upwards (towards positive infinity), then back down; - * two iterations should be enough - */ - - if (day >= 0) { - year = 1970 + day / 365; - } else { - year = 1970 + day / 366; - } - - for (;;) { - diff_days = duk__day_from_year(year) - day; - DUK_DDD(DUK_DDDPRINT("year=%ld day=%ld, diff_days=%ld", (long) year, (long) day, (long) diff_days)); - if (diff_days <= 0) { - DUK_ASSERT(-diff_days < 366); /* fits into duk_small_int_t */ - *out_day_within_year = -diff_days; - DUK_DDD(DUK_DDDPRINT("--> year=%ld, day-within-year=%ld", (long) year, (long) *out_day_within_year)); - DUK_ASSERT(*out_day_within_year >= 0); - DUK_ASSERT(*out_day_within_year < (duk_bi_date_is_leap_year(year) ? 366 : 365)); - return year; - } - - /* Note: this is very tricky; we must never 'overshoot' the - * correction downwards. - */ - year -= 1 + (diff_days - 1) / 366; /* conservative */ - } -} - -/* Given a (year, month, day-within-month) triple, compute day number. - * The input triple is un-normalized and may contain non-finite values. - */ -DUK_LOCAL duk_double_t duk__make_day(duk_double_t year, duk_double_t month, duk_double_t day) { - duk_int_t day_num; - duk_bool_t is_leap; - duk_small_int_t i, n; - - /* Assume that year, month, day are all coerced to whole numbers. - * They may also be NaN or infinity, in which case this function - * must return NaN or infinity to ensure time value becomes NaN. - * If 'day' is NaN, the final return will end up returning a NaN, - * so it doesn't need to be checked here. - */ - - if (!DUK_ISFINITE(year) || !DUK_ISFINITE(month)) { - return DUK_DOUBLE_NAN; - } - - year += DUK_FLOOR(month / 12.0); - - month = DUK_FMOD(month, 12.0); - if (month < 0.0) { - /* handle negative values */ - month += 12.0; - } - - /* The algorithm in E5.1 Section 15.9.1.12 normalizes month, but - * does not normalize the day-of-month (nor check whether or not - * it is finite) because it's not necessary for finding the day - * number which matches the (year,month) pair. - * - * We assume that duk__day_from_year() is exact here. - * - * Without an explicit infinity / NaN check in the beginning, - * day_num would be a bogus integer here. - * - * It's possible for 'year' to be out of integer range here. - * If so, we need to return NaN without integer overflow. - * This fixes test-bug-setyear-overflow.js. - */ - - if (!duk_bi_date_year_in_valid_range(year)) { - DUK_DD(DUK_DDPRINT("year not in ecmascript valid range, avoid integer overflow: %lf", (double) year)); - return DUK_DOUBLE_NAN; - } - day_num = duk__day_from_year((duk_int_t) year); - is_leap = duk_bi_date_is_leap_year((duk_int_t) year); - - n = (duk_small_int_t) month; - for (i = 0; i < n; i++) { - day_num += duk__days_in_month[i]; - if (i == 1 && is_leap) { - day_num++; - } - } - - /* If 'day' is NaN, returns NaN. */ - return (duk_double_t) day_num + day; -} - -/* Split time value into parts. The time value may contain fractions (it may - * come from duk_time_to_components() API call) which are truncated. Possible - * local time adjustment has already been applied when reading the time value. - */ -DUK_INTERNAL void duk_bi_date_timeval_to_parts(duk_double_t d, duk_int_t *parts, duk_double_t *dparts, duk_small_uint_t flags) { - duk_double_t d1, d2; - duk_int_t t1, t2; - duk_int_t day_since_epoch; - duk_int_t year; /* does not fit into 16 bits */ - duk_small_int_t day_in_year; - duk_small_int_t month; - duk_small_int_t day; - duk_small_int_t dim; - duk_int_t jan1_since_epoch; - duk_small_int_t jan1_weekday; - duk_int_t equiv_year; - duk_small_uint_t i; - duk_bool_t is_leap; - duk_small_int_t arridx; - - DUK_ASSERT(DUK_ISFINITE(d)); /* caller checks */ - d = DUK_FLOOR(d); /* remove fractions if present */ - DUK_ASSERT(duk_double_equals(DUK_FLOOR(d), d)); - - /* The timevalue must be in valid ECMAScript range, but since a local - * time offset can be applied, we need to allow a +/- 24h leeway to - * the value. In other words, although the UTC time is within the - * ECMAScript range, the local part values can be just outside of it. - */ - DUK_UNREF(duk_bi_date_timeval_in_leeway_range); - DUK_ASSERT(duk_bi_date_timeval_in_leeway_range(d)); - - /* These computations are guaranteed to be exact for the valid - * E5 time value range, assuming milliseconds without fractions. - */ - d1 = (duk_double_t) DUK_FMOD(d, (double) DUK_DATE_MSEC_DAY); - if (d1 < 0.0) { - /* deal with negative values */ - d1 += (duk_double_t) DUK_DATE_MSEC_DAY; - } - d2 = DUK_FLOOR((double) (d / (duk_double_t) DUK_DATE_MSEC_DAY)); - DUK_ASSERT(duk_double_equals(d2 * ((duk_double_t) DUK_DATE_MSEC_DAY) + d1, d)); - /* now expected to fit into a 32-bit integer */ - t1 = (duk_int_t) d1; - t2 = (duk_int_t) d2; - day_since_epoch = t2; - DUK_ASSERT(duk_double_equals((duk_double_t) t1, d1)); - DUK_ASSERT(duk_double_equals((duk_double_t) t2, d2)); - - /* t1 = milliseconds within day (fits 32 bit) - * t2 = day number from epoch (fits 32 bit, may be negative) - */ - - parts[DUK_DATE_IDX_MILLISECOND] = t1 % 1000; - t1 /= 1000; - parts[DUK_DATE_IDX_SECOND] = t1 % 60; - t1 /= 60; - parts[DUK_DATE_IDX_MINUTE] = t1 % 60; - t1 /= 60; - parts[DUK_DATE_IDX_HOUR] = t1; - DUK_ASSERT(parts[DUK_DATE_IDX_MILLISECOND] >= 0 && parts[DUK_DATE_IDX_MILLISECOND] <= 999); - DUK_ASSERT(parts[DUK_DATE_IDX_SECOND] >= 0 && parts[DUK_DATE_IDX_SECOND] <= 59); - DUK_ASSERT(parts[DUK_DATE_IDX_MINUTE] >= 0 && parts[DUK_DATE_IDX_MINUTE] <= 59); - DUK_ASSERT(parts[DUK_DATE_IDX_HOUR] >= 0 && parts[DUK_DATE_IDX_HOUR] <= 23); - - DUK_DDD(DUK_DDDPRINT("d=%lf, d1=%lf, d2=%lf, t1=%ld, t2=%ld, parts: hour=%ld min=%ld sec=%ld msec=%ld", - (double) d, - (double) d1, - (double) d2, - (long) t1, - (long) t2, - (long) parts[DUK_DATE_IDX_HOUR], - (long) parts[DUK_DATE_IDX_MINUTE], - (long) parts[DUK_DATE_IDX_SECOND], - (long) parts[DUK_DATE_IDX_MILLISECOND])); - - /* This assert depends on the input parts representing time inside - * the ECMAScript range. - */ - DUK_ASSERT(t2 + DUK__WEEKDAY_MOD_ADDER >= 0); - parts[DUK_DATE_IDX_WEEKDAY] = (t2 + 4 + DUK__WEEKDAY_MOD_ADDER) % 7; /* E5.1 Section 15.9.1.6 */ - DUK_ASSERT(parts[DUK_DATE_IDX_WEEKDAY] >= 0 && parts[DUK_DATE_IDX_WEEKDAY] <= 6); - - year = duk__year_from_day(t2, &day_in_year); - day = day_in_year; - is_leap = duk_bi_date_is_leap_year(year); - for (month = 0; month < 12; month++) { - dim = duk__days_in_month[month]; - if (month == 1 && is_leap) { - dim++; - } - DUK_DDD(DUK_DDDPRINT("month=%ld, dim=%ld, day=%ld", (long) month, (long) dim, (long) day)); - if (day < dim) { - break; - } - day -= dim; - } - DUK_DDD(DUK_DDDPRINT("final month=%ld", (long) month)); - DUK_ASSERT(month >= 0 && month <= 11); - DUK_ASSERT(day >= 0 && day <= 31); - - /* Equivalent year mapping, used to avoid DST trouble when platform - * may fail to provide reasonable DST answers for dates outside the - * ordinary range (e.g. 1970-2038). An equivalent year has the same - * leap-year-ness as the original year and begins on the same weekday - * (Jan 1). - * - * The year 2038 is avoided because there seem to be problems with it - * on some platforms. The year 1970 is also avoided as there were - * practical problems with it; an equivalent year is used for it too, - * which breaks some DST computations for 1970 right now, see e.g. - * test-bi-date-tzoffset-brute-fi.js. - */ - if ((flags & DUK_DATE_FLAG_EQUIVYEAR) && (year < 1971 || year > 2037)) { - DUK_ASSERT(is_leap == 0 || is_leap == 1); - - jan1_since_epoch = day_since_epoch - day_in_year; /* day number for Jan 1 since epoch */ - DUK_ASSERT(jan1_since_epoch + DUK__WEEKDAY_MOD_ADDER >= 0); - jan1_weekday = (jan1_since_epoch + 4 + DUK__WEEKDAY_MOD_ADDER) % 7; /* E5.1 Section 15.9.1.6 */ - DUK_ASSERT(jan1_weekday >= 0 && jan1_weekday <= 6); - arridx = jan1_weekday; - if (is_leap) { - arridx += 7; - } - DUK_ASSERT(arridx >= 0 && arridx < (duk_small_int_t) (sizeof(duk__date_equivyear) / sizeof(duk_uint8_t))); - - equiv_year = (duk_int_t) duk__date_equivyear[arridx] + 1970; - year = equiv_year; - DUK_DDD(DUK_DDDPRINT("equiv year mapping, year=%ld, day_in_year=%ld, day_since_epoch=%ld, " - "jan1_since_epoch=%ld, jan1_weekday=%ld -> equiv year %ld", - (long) year, - (long) day_in_year, - (long) day_since_epoch, - (long) jan1_since_epoch, - (long) jan1_weekday, - (long) equiv_year)); - } - - parts[DUK_DATE_IDX_YEAR] = year; - parts[DUK_DATE_IDX_MONTH] = month; - parts[DUK_DATE_IDX_DAY] = day; - - if (flags & DUK_DATE_FLAG_ONEBASED) { - parts[DUK_DATE_IDX_MONTH]++; /* zero-based -> one-based */ - parts[DUK_DATE_IDX_DAY]++; /* -""- */ - } - - if (dparts != NULL) { - for (i = 0; i < DUK_DATE_IDX_NUM_PARTS; i++) { - dparts[i] = (duk_double_t) parts[i]; - } - } -} - -/* Compute time value from (double) parts. The parts can be either UTC - * or local time; if local, they need to be (conceptually) converted into - * UTC time. The parts may represent valid or invalid time, and may be - * wildly out of range (but may cancel each other and still come out in - * the valid Date range). - */ -DUK_INTERNAL duk_double_t duk_bi_date_get_timeval_from_dparts(duk_double_t *dparts, duk_small_uint_t flags) { -#if defined(DUK_USE_PARANOID_DATE_COMPUTATION) - /* See comments below on MakeTime why these are volatile. */ - volatile duk_double_t tmp_time; - volatile duk_double_t tmp_day; - volatile duk_double_t d; -#else - duk_double_t tmp_time; - duk_double_t tmp_day; - duk_double_t d; -#endif - duk_small_uint_t i; - duk_int_t tzoff, tzoffprev1, tzoffprev2; - - /* Expects 'this' at top of stack on entry. */ - - /* Coerce all finite parts with ToInteger(). ToInteger() must not - * be called for NaN/Infinity because it will convert e.g. NaN to - * zero. If ToInteger() has already been called, this has no side - * effects and is idempotent. - * - * Don't read dparts[DUK_DATE_IDX_WEEKDAY]; it will cause Valgrind - * issues if the value is uninitialized. - */ - for (i = 0; i <= DUK_DATE_IDX_MILLISECOND; i++) { - /* SCANBUILD: scan-build complains here about assigned value - * being garbage or undefined. This is correct but operating - * on undefined values has no ill effect and is ignored by the - * caller in the case where this happens. - */ - d = dparts[i]; - if (DUK_ISFINITE(d)) { - dparts[i] = duk_js_tointeger_number(d); - } - } - - /* Use explicit steps in computation to try to ensure that - * computation happens with intermediate results coerced to - * double values (instead of using something more accurate). - * E.g. E5.1 Section 15.9.1.11 requires use of IEEE 754 - * rules (= ECMAScript '+' and '*' operators). - * - * Without 'volatile' even this approach fails on some platform - * and compiler combinations. For instance, gcc 4.8.1 on Ubuntu - * 64-bit, with -m32 and without -std=c99, test-bi-date-canceling.js - * would fail because of some optimizations when computing tmp_time - * (MakeTime below). Adding 'volatile' to tmp_time solved this - * particular problem (annoyingly, also adding debug prints or - * running the executable under valgrind hides it). - */ - - /* MakeTime */ - tmp_time = 0.0; - tmp_time += dparts[DUK_DATE_IDX_HOUR] * ((duk_double_t) DUK_DATE_MSEC_HOUR); - tmp_time += dparts[DUK_DATE_IDX_MINUTE] * ((duk_double_t) DUK_DATE_MSEC_MINUTE); - tmp_time += dparts[DUK_DATE_IDX_SECOND] * ((duk_double_t) DUK_DATE_MSEC_SECOND); - tmp_time += dparts[DUK_DATE_IDX_MILLISECOND]; - - /* MakeDay */ - tmp_day = duk__make_day(dparts[DUK_DATE_IDX_YEAR], dparts[DUK_DATE_IDX_MONTH], dparts[DUK_DATE_IDX_DAY]); - - /* MakeDate */ - d = tmp_day * ((duk_double_t) DUK_DATE_MSEC_DAY) + tmp_time; - - DUK_DDD(DUK_DDDPRINT("time=%lf day=%lf --> timeval=%lf", (double) tmp_time, (double) tmp_day, (double) d)); - - /* Optional UTC conversion. */ - if (flags & DUK_DATE_FLAG_LOCALTIME) { - /* DUK_USE_DATE_GET_LOCAL_TZOFFSET() needs to be called with a - * time value computed from UTC parts. At this point we only - * have 'd' which is a time value computed from local parts, so - * it is off by the UTC-to-local time offset which we don't know - * yet. The current solution for computing the UTC-to-local - * time offset is to iterate a few times and detect a fixed - * point or a two-cycle loop (or a sanity iteration limit), - * see test-bi-date-local-parts.js and test-bi-date-tzoffset-basic-fi.js. - * - * E5.1 Section 15.9.1.9: - * UTC(t) = t - LocalTZA - DaylightSavingTA(t - LocalTZA) - * - * For NaN/inf, DUK_USE_DATE_GET_LOCAL_TZOFFSET() returns 0. - */ - -#if 0 - /* Old solution: don't iterate, incorrect */ - tzoff = DUK_USE_DATE_GET_LOCAL_TZOFFSET(d); - DUK_DDD(DUK_DDDPRINT("tzoffset w/o iteration, tzoff=%ld", (long) tzoff)); - d -= tzoff * 1000L; - DUK_UNREF(tzoffprev1); - DUK_UNREF(tzoffprev2); -#endif - - /* Iteration solution */ - tzoff = 0; - tzoffprev1 = 999999999L; /* invalid value which never matches */ - for (i = 0; i < DUK__LOCAL_TZOFFSET_MAXITER; i++) { - tzoffprev2 = tzoffprev1; - tzoffprev1 = tzoff; - tzoff = DUK_USE_DATE_GET_LOCAL_TZOFFSET(d - tzoff * 1000L); - DUK_DDD(DUK_DDDPRINT("tzoffset iteration, i=%d, tzoff=%ld, tzoffprev1=%ld tzoffprev2=%ld", - (int) i, - (long) tzoff, - (long) tzoffprev1, - (long) tzoffprev2)); - if (tzoff == tzoffprev1) { - DUK_DDD(DUK_DDDPRINT("tzoffset iteration finished, i=%d, tzoff=%ld, tzoffprev1=%ld, tzoffprev2=%ld", - (int) i, - (long) tzoff, - (long) tzoffprev1, - (long) tzoffprev2)); - break; - } else if (tzoff == tzoffprev2) { - /* Two value cycle, see e.g. test-bi-date-tzoffset-basic-fi.js. - * In these cases, favor a higher tzoffset to get a consistent - * result which is independent of iteration count. Not sure if - * this is a generically correct solution. - */ - DUK_DDD(DUK_DDDPRINT( - "tzoffset iteration two-value cycle, i=%d, tzoff=%ld, tzoffprev1=%ld, tzoffprev2=%ld", - (int) i, - (long) tzoff, - (long) tzoffprev1, - (long) tzoffprev2)); - if (tzoffprev1 > tzoff) { - tzoff = tzoffprev1; - } - break; - } - } - DUK_DDD(DUK_DDDPRINT("tzoffset iteration, tzoff=%ld", (long) tzoff)); - d -= tzoff * 1000L; - } - - /* TimeClip(), which also handles Infinity -> NaN conversion */ - d = duk__timeclip(d); - - return d; -} - -/* - * API oriented helpers - */ - -/* Push 'this' binding, check that it is a Date object; then push the - * internal time value. At the end, stack is: [ ... this timeval ]. - * Returns the time value. Local time adjustment is done if requested. - */ -DUK_LOCAL duk_double_t duk__push_this_get_timeval_tzoffset(duk_hthread *thr, duk_small_uint_t flags, duk_int_t *out_tzoffset) { - duk_hobject *h; - duk_double_t d; - duk_int_t tzoffset = 0; - - duk_push_this(thr); - h = duk_get_hobject(thr, -1); /* XXX: getter with class check, useful in built-ins */ - if (h == NULL || DUK_HOBJECT_GET_CLASS_NUMBER(h) != DUK_HOBJECT_CLASS_DATE) { - DUK_ERROR_TYPE(thr, "expected Date"); - DUK_WO_NORETURN(return 0.0;); - } - - duk_xget_owndataprop_stridx_short(thr, -1, DUK_STRIDX_INT_VALUE); - d = duk_to_number_m1(thr); - duk_pop(thr); - - if (DUK_ISNAN(d)) { - if (flags & DUK_DATE_FLAG_NAN_TO_ZERO) { - d = 0.0; - } - if (flags & DUK_DATE_FLAG_NAN_TO_RANGE_ERROR) { - DUK_ERROR_RANGE(thr, "Invalid Date"); - DUK_WO_NORETURN(return 0.0;); - } - } - /* if no NaN handling flag, may still be NaN here, but not Inf */ - DUK_ASSERT(!DUK_ISINF(d)); - - if (flags & DUK_DATE_FLAG_LOCALTIME) { - /* Note: DST adjustment is determined using UTC time. - * If 'd' is NaN, tzoffset will be 0. - */ - tzoffset = DUK_USE_DATE_GET_LOCAL_TZOFFSET(d); /* seconds */ - d += tzoffset * 1000L; - } - if (out_tzoffset) { - *out_tzoffset = tzoffset; - } - - /* [ ... this ] */ - return d; -} - -DUK_LOCAL duk_double_t duk__push_this_get_timeval(duk_hthread *thr, duk_small_uint_t flags) { - return duk__push_this_get_timeval_tzoffset(thr, flags, NULL); -} - -/* Set timeval to 'this' from dparts, push the new time value onto the - * value stack and return 1 (caller can then tail call us). Expects - * the value stack to contain 'this' on the stack top. - */ -DUK_LOCAL duk_ret_t duk__set_this_timeval_from_dparts(duk_hthread *thr, duk_double_t *dparts, duk_small_uint_t flags) { - duk_double_t d; - - /* [ ... this ] */ - - d = duk_bi_date_get_timeval_from_dparts(dparts, flags); - duk_push_number(thr, d); /* -> [ ... this timeval_new ] */ - duk_dup_top(thr); /* -> [ ... this timeval_new timeval_new ] */ - - /* Must force write because e.g. .setYear() must work even when - * the Date instance is frozen. - */ - duk_xdef_prop_stridx_short(thr, -3, DUK_STRIDX_INT_VALUE, DUK_PROPDESC_FLAGS_W); - - /* Stack top: new time value, return 1 to allow tail calls. */ - return 1; -} - -/* 'out_buf' must be at least DUK_BI_DATE_ISO8601_BUFSIZE long. */ -DUK_LOCAL void duk__format_parts_iso8601(duk_int_t *parts, duk_int_t tzoffset, duk_small_uint_t flags, duk_uint8_t *out_buf) { - char yearstr[8]; /* "-123456\0" */ - char tzstr[8]; /* "+11:22\0" */ - char sep = (flags & DUK_DATE_FLAG_SEP_T) ? DUK_ASC_UC_T : DUK_ASC_SPACE; - - DUK_ASSERT(parts[DUK_DATE_IDX_MONTH] >= 1 && parts[DUK_DATE_IDX_MONTH] <= 12); - DUK_ASSERT(parts[DUK_DATE_IDX_DAY] >= 1 && parts[DUK_DATE_IDX_DAY] <= 31); - DUK_ASSERT(parts[DUK_DATE_IDX_YEAR] >= -999999 && parts[DUK_DATE_IDX_YEAR] <= 999999); - - /* Note: %06d for positive value, %07d for negative value to include - * sign and 6 digits. - */ - DUK_SNPRINTF(yearstr, - sizeof(yearstr), - (parts[DUK_DATE_IDX_YEAR] >= 0 && parts[DUK_DATE_IDX_YEAR] <= 9999) ? - "%04ld" : - ((parts[DUK_DATE_IDX_YEAR] >= 0) ? "+%06ld" : "%07ld"), - (long) parts[DUK_DATE_IDX_YEAR]); - yearstr[sizeof(yearstr) - 1] = (char) 0; - - if (flags & DUK_DATE_FLAG_LOCALTIME) { - /* tzoffset seconds are dropped; 16 bits suffice for - * time offset in minutes - */ - const char *fmt; - duk_small_int_t tmp, arg_hours, arg_minutes; - - if (tzoffset >= 0) { - tmp = tzoffset; - fmt = "+%02d:%02d"; - } else { - tmp = -tzoffset; - fmt = "-%02d:%02d"; - } - tmp = tmp / 60; - arg_hours = tmp / 60; - arg_minutes = tmp % 60; - DUK_ASSERT(arg_hours <= 24); /* Even less is actually guaranteed for a valid tzoffset. */ - arg_hours = arg_hours & 0x3f; /* For [0,24] this is a no-op, but fixes GCC 7 warning, see - https://github.com/svaarala/duktape/issues/1602. */ - - DUK_SNPRINTF(tzstr, sizeof(tzstr), fmt, (int) arg_hours, (int) arg_minutes); - tzstr[sizeof(tzstr) - 1] = (char) 0; - } else { - tzstr[0] = DUK_ASC_UC_Z; - tzstr[1] = (char) 0; - } - - /* Unlike year, the other parts fit into 16 bits so %d format - * is portable. - */ - if ((flags & DUK_DATE_FLAG_TOSTRING_DATE) && (flags & DUK_DATE_FLAG_TOSTRING_TIME)) { - DUK_SPRINTF((char *) out_buf, - "%s-%02d-%02d%c%02d:%02d:%02d.%03d%s", - (const char *) yearstr, - (int) parts[DUK_DATE_IDX_MONTH], - (int) parts[DUK_DATE_IDX_DAY], - (int) sep, - (int) parts[DUK_DATE_IDX_HOUR], - (int) parts[DUK_DATE_IDX_MINUTE], - (int) parts[DUK_DATE_IDX_SECOND], - (int) parts[DUK_DATE_IDX_MILLISECOND], - (const char *) tzstr); - } else if (flags & DUK_DATE_FLAG_TOSTRING_DATE) { - DUK_SPRINTF((char *) out_buf, - "%s-%02d-%02d", - (const char *) yearstr, - (int) parts[DUK_DATE_IDX_MONTH], - (int) parts[DUK_DATE_IDX_DAY]); - } else { - DUK_ASSERT(flags & DUK_DATE_FLAG_TOSTRING_TIME); - DUK_SPRINTF((char *) out_buf, - "%02d:%02d:%02d.%03d%s", - (int) parts[DUK_DATE_IDX_HOUR], - (int) parts[DUK_DATE_IDX_MINUTE], - (int) parts[DUK_DATE_IDX_SECOND], - (int) parts[DUK_DATE_IDX_MILLISECOND], - (const char *) tzstr); - } -} - -/* Helper for string conversion calls: check 'this' binding, get the - * internal time value, and format date and/or time in a few formats. - * Return value allows tail calls. - */ -DUK_LOCAL duk_ret_t duk__to_string_helper(duk_hthread *thr, duk_small_uint_t flags) { - duk_double_t d; - duk_int_t parts[DUK_DATE_IDX_NUM_PARTS]; - duk_int_t tzoffset; /* seconds, doesn't fit into 16 bits */ - duk_bool_t rc; - duk_uint8_t buf[DUK_BI_DATE_ISO8601_BUFSIZE]; - - DUK_UNREF(rc); /* unreferenced with some options */ - - d = duk__push_this_get_timeval_tzoffset(thr, flags, &tzoffset); - if (DUK_ISNAN(d)) { - duk_push_hstring_stridx(thr, DUK_STRIDX_INVALID_DATE); - return 1; - } - DUK_ASSERT(DUK_ISFINITE(d)); - - /* formatters always get one-based month/day-of-month */ - duk_bi_date_timeval_to_parts(d, parts, NULL, DUK_DATE_FLAG_ONEBASED); - DUK_ASSERT(parts[DUK_DATE_IDX_MONTH] >= 1 && parts[DUK_DATE_IDX_MONTH] <= 12); - DUK_ASSERT(parts[DUK_DATE_IDX_DAY] >= 1 && parts[DUK_DATE_IDX_DAY] <= 31); - - if (flags & DUK_DATE_FLAG_TOSTRING_LOCALE) { - /* try locale specific formatter; if it refuses to format the - * string, fall back to an ISO 8601 formatted value in local - * time. - */ -#if defined(DUK_USE_DATE_FORMAT_STRING) - /* Contract, either: - * - Push string to value stack and return 1 - * - Don't push anything and return 0 - */ - - rc = DUK_USE_DATE_FORMAT_STRING(thr, parts, tzoffset, flags); - if (rc != 0) { - return 1; - } -#else - /* No locale specific formatter; this is OK, we fall back - * to ISO 8601. - */ -#endif - } - - /* Different calling convention than above used because the helper - * is shared. - */ - duk__format_parts_iso8601(parts, tzoffset, flags, buf); - duk_push_string(thr, (const char *) buf); - return 1; -} - -/* Helper for component getter calls: check 'this' binding, get the - * internal time value, split it into parts (either as UTC time or - * local time), push a specified component as a return value to the - * value stack and return 1 (caller can then tail call us). - */ -DUK_LOCAL duk_ret_t duk__get_part_helper(duk_hthread *thr, duk_small_uint_t flags_and_idx) { - duk_double_t d; - duk_int_t parts[DUK_DATE_IDX_NUM_PARTS]; - duk_small_uint_t idx_part = (duk_small_uint_t) (flags_and_idx >> DUK_DATE_FLAG_VALUE_SHIFT); /* unpack args */ - - DUK_ASSERT_DISABLE(idx_part >= 0); /* unsigned */ - DUK_ASSERT(idx_part < DUK_DATE_IDX_NUM_PARTS); - - d = duk__push_this_get_timeval(thr, flags_and_idx); - if (DUK_ISNAN(d)) { - duk_push_nan(thr); - return 1; - } - DUK_ASSERT(DUK_ISFINITE(d)); - - duk_bi_date_timeval_to_parts(d, parts, NULL, flags_and_idx); /* no need to mask idx portion */ - - /* Setter APIs detect special year numbers (0...99) and apply a +1900 - * only in certain cases. The legacy getYear() getter applies -1900 - * unconditionally. - */ - duk_push_int(thr, (flags_and_idx & DUK_DATE_FLAG_SUB1900) ? parts[idx_part] - 1900 : parts[idx_part]); - return 1; -} - -/* Helper for component setter calls: check 'this' binding, get the - * internal time value, split it into parts (either as UTC time or - * local time), modify one or more components as specified, recompute - * the time value, set it as the internal value. Finally, push the - * new time value as a return value to the value stack and return 1 - * (caller can then tail call us). - */ -DUK_LOCAL duk_ret_t duk__set_part_helper(duk_hthread *thr, duk_small_uint_t flags_and_maxnargs) { - duk_double_t d; - duk_int_t parts[DUK_DATE_IDX_NUM_PARTS]; - duk_double_t dparts[DUK_DATE_IDX_NUM_PARTS]; - duk_idx_t nargs; - duk_small_uint_t maxnargs = (duk_small_uint_t) (flags_and_maxnargs >> DUK_DATE_FLAG_VALUE_SHIFT); /* unpack args */ - duk_small_uint_t idx_first, idx; - duk_small_uint_t i; - - nargs = duk_get_top(thr); - d = duk__push_this_get_timeval(thr, flags_and_maxnargs); - DUK_ASSERT(DUK_ISFINITE(d) || DUK_ISNAN(d)); - - if (DUK_ISFINITE(d)) { - duk_bi_date_timeval_to_parts(d, parts, dparts, flags_and_maxnargs); - } else { - /* NaN timevalue: we need to coerce the arguments, but - * the resulting internal timestamp needs to remain NaN. - * This works but is not pretty: parts and dparts will - * be partially uninitialized, but we only write to them. - */ - } - - /* - * Determining which datetime components to overwrite based on - * stack arguments is a bit complicated, but important to factor - * out from setters themselves for compactness. - * - * If DUK_DATE_FLAG_TIMESETTER, maxnargs indicates setter type: - * - * 1 -> millisecond - * 2 -> second, [millisecond] - * 3 -> minute, [second], [millisecond] - * 4 -> hour, [minute], [second], [millisecond] - * - * Else: - * - * 1 -> date - * 2 -> month, [date] - * 3 -> year, [month], [date] - * - * By comparing nargs and maxnargs (and flags) we know which - * components to override. We rely on part index ordering. - */ - - if (flags_and_maxnargs & DUK_DATE_FLAG_TIMESETTER) { - DUK_ASSERT(maxnargs >= 1 && maxnargs <= 4); - idx_first = DUK_DATE_IDX_MILLISECOND - (maxnargs - 1); - } else { - DUK_ASSERT(maxnargs >= 1 && maxnargs <= 3); - idx_first = DUK_DATE_IDX_DAY - (maxnargs - 1); - } - DUK_ASSERT_DISABLE(idx_first >= 0); /* unsigned */ - DUK_ASSERT(idx_first < DUK_DATE_IDX_NUM_PARTS); - - for (i = 0; i < maxnargs; i++) { - if ((duk_idx_t) i >= nargs) { - /* no argument given -> leave components untouched */ - break; - } - idx = idx_first + i; - DUK_ASSERT_DISABLE(idx >= 0); /* unsigned */ - DUK_ASSERT(idx < DUK_DATE_IDX_NUM_PARTS); - - if (idx == DUK_DATE_IDX_YEAR && (flags_and_maxnargs & DUK_DATE_FLAG_YEAR_FIXUP)) { - duk__twodigit_year_fixup(thr, (duk_idx_t) i); - } - - dparts[idx] = duk_to_number(thr, (duk_idx_t) i); - - if (idx == DUK_DATE_IDX_DAY) { - /* Day-of-month is one-based in the API, but zero-based - * internally, so fix here. Note that month is zero-based - * both in the API and internally. - */ - /* SCANBUILD: complains about use of uninitialized values. - * The complaint is correct, but operating in undefined - * values here is intentional in some cases and the caller - * ignores the results. - */ - dparts[idx] -= 1.0; - } - } - - /* Leaves new timevalue on stack top and returns 1, which is correct - * for part setters. - */ - if (DUK_ISFINITE(d)) { - return duk__set_this_timeval_from_dparts(thr, dparts, flags_and_maxnargs); - } else { - /* Internal timevalue is already NaN, so don't touch it. */ - duk_push_nan(thr); - return 1; - } -} - -/* Apply ToNumber() to specified index; if ToInteger(val) in [0,99], add - * 1900 and replace value at idx_val. - */ -DUK_LOCAL void duk__twodigit_year_fixup(duk_hthread *thr, duk_idx_t idx_val) { - duk_double_t d; - - /* XXX: idx_val would fit into 16 bits, but using duk_small_uint_t - * might not generate better code due to casting. - */ - - /* E5 Sections 15.9.3.1, B.2.4, B.2.5 */ - duk_to_number(thr, idx_val); - if (duk_is_nan(thr, idx_val)) { - return; - } - duk_dup(thr, idx_val); - duk_to_int(thr, -1); - d = duk_get_number(thr, -1); /* get as double to handle huge numbers correctly */ - if (d >= 0.0 && d <= 99.0) { - d += 1900.0; - duk_push_number(thr, d); - duk_replace(thr, idx_val); - } - duk_pop(thr); -} - -/* Set datetime parts from stack arguments, defaulting any missing values. - * Day-of-week is not set; it is not required when setting the time value. - */ -DUK_LOCAL void duk__set_parts_from_args(duk_hthread *thr, duk_double_t *dparts, duk_idx_t nargs) { - duk_double_t d; - duk_small_uint_t i; - duk_small_uint_t idx; - - /* Causes a ToNumber() coercion, but doesn't break coercion order since - * year is coerced first anyway. - */ - duk__twodigit_year_fixup(thr, 0); - - /* There are at most 7 args, but we use 8 here so that also - * DUK_DATE_IDX_WEEKDAY gets initialized (to zero) to avoid the potential - * for any Valgrind gripes later. - */ - for (i = 0; i < 8; i++) { - /* Note: rely on index ordering */ - idx = DUK_DATE_IDX_YEAR + i; - if ((duk_idx_t) i < nargs) { - d = duk_to_number(thr, (duk_idx_t) i); - if (idx == DUK_DATE_IDX_DAY) { - /* Convert day from one-based to zero-based (internal). This may - * cause the day part to be negative, which is OK. - */ - d -= 1.0; - } - } else { - /* All components default to 0 except day-of-month which defaults - * to 1. However, because our internal day-of-month is zero-based, - * it also defaults to zero here. - */ - d = 0.0; - } - dparts[idx] = d; - } - - DUK_DDD(DUK_DDDPRINT("parts from args -> %lf %lf %lf %lf %lf %lf %lf %lf", - (double) dparts[0], - (double) dparts[1], - (double) dparts[2], - (double) dparts[3], - (double) dparts[4], - (double) dparts[5], - (double) dparts[6], - (double) dparts[7])); -} - -/* - * Indirect magic value lookup for Date methods. - * - * Date methods don't put their control flags into the function magic value - * because they wouldn't fit into a LIGHTFUNC's magic field. Instead, the - * magic value is set to an index pointing to the array of control flags - * below. - * - * This must be kept in strict sync with genbuiltins.py! - */ - -static duk_uint16_t duk__date_magics[] = { - /* 0: toString */ - DUK_DATE_FLAG_TOSTRING_DATE + DUK_DATE_FLAG_TOSTRING_TIME + DUK_DATE_FLAG_LOCALTIME, - - /* 1: toDateString */ - DUK_DATE_FLAG_TOSTRING_DATE + DUK_DATE_FLAG_LOCALTIME, - - /* 2: toTimeString */ - DUK_DATE_FLAG_TOSTRING_TIME + DUK_DATE_FLAG_LOCALTIME, - - /* 3: toLocaleString */ - DUK_DATE_FLAG_TOSTRING_DATE + DUK_DATE_FLAG_TOSTRING_TIME + DUK_DATE_FLAG_TOSTRING_LOCALE + DUK_DATE_FLAG_LOCALTIME, - - /* 4: toLocaleDateString */ - DUK_DATE_FLAG_TOSTRING_DATE + DUK_DATE_FLAG_TOSTRING_LOCALE + DUK_DATE_FLAG_LOCALTIME, - - /* 5: toLocaleTimeString */ - DUK_DATE_FLAG_TOSTRING_TIME + DUK_DATE_FLAG_TOSTRING_LOCALE + DUK_DATE_FLAG_LOCALTIME, - - /* 6: toUTCString */ - DUK_DATE_FLAG_TOSTRING_DATE + DUK_DATE_FLAG_TOSTRING_TIME, - - /* 7: toISOString */ - DUK_DATE_FLAG_TOSTRING_DATE + DUK_DATE_FLAG_TOSTRING_TIME + DUK_DATE_FLAG_NAN_TO_RANGE_ERROR + DUK_DATE_FLAG_SEP_T, - - /* 8: getFullYear */ - DUK_DATE_FLAG_LOCALTIME + (DUK_DATE_IDX_YEAR << DUK_DATE_FLAG_VALUE_SHIFT), - - /* 9: getUTCFullYear */ - 0 + (DUK_DATE_IDX_YEAR << DUK_DATE_FLAG_VALUE_SHIFT), - - /* 10: getMonth */ - DUK_DATE_FLAG_LOCALTIME + (DUK_DATE_IDX_MONTH << DUK_DATE_FLAG_VALUE_SHIFT), - - /* 11: getUTCMonth */ - 0 + (DUK_DATE_IDX_MONTH << DUK_DATE_FLAG_VALUE_SHIFT), - - /* 12: getDate */ - DUK_DATE_FLAG_ONEBASED + DUK_DATE_FLAG_LOCALTIME + (DUK_DATE_IDX_DAY << DUK_DATE_FLAG_VALUE_SHIFT), - - /* 13: getUTCDate */ - DUK_DATE_FLAG_ONEBASED + (DUK_DATE_IDX_DAY << DUK_DATE_FLAG_VALUE_SHIFT), - - /* 14: getDay */ - DUK_DATE_FLAG_LOCALTIME + (DUK_DATE_IDX_WEEKDAY << DUK_DATE_FLAG_VALUE_SHIFT), - - /* 15: getUTCDay */ - 0 + (DUK_DATE_IDX_WEEKDAY << DUK_DATE_FLAG_VALUE_SHIFT), - - /* 16: getHours */ - DUK_DATE_FLAG_LOCALTIME + (DUK_DATE_IDX_HOUR << DUK_DATE_FLAG_VALUE_SHIFT), - - /* 17: getUTCHours */ - 0 + (DUK_DATE_IDX_HOUR << DUK_DATE_FLAG_VALUE_SHIFT), - - /* 18: getMinutes */ - DUK_DATE_FLAG_LOCALTIME + (DUK_DATE_IDX_MINUTE << DUK_DATE_FLAG_VALUE_SHIFT), - - /* 19: getUTCMinutes */ - 0 + (DUK_DATE_IDX_MINUTE << DUK_DATE_FLAG_VALUE_SHIFT), - - /* 20: getSeconds */ - DUK_DATE_FLAG_LOCALTIME + (DUK_DATE_IDX_SECOND << DUK_DATE_FLAG_VALUE_SHIFT), - - /* 21: getUTCSeconds */ - 0 + (DUK_DATE_IDX_SECOND << DUK_DATE_FLAG_VALUE_SHIFT), - - /* 22: getMilliseconds */ - DUK_DATE_FLAG_LOCALTIME + (DUK_DATE_IDX_MILLISECOND << DUK_DATE_FLAG_VALUE_SHIFT), - - /* 23: getUTCMilliseconds */ - 0 + (DUK_DATE_IDX_MILLISECOND << DUK_DATE_FLAG_VALUE_SHIFT), - - /* 24: setMilliseconds */ - DUK_DATE_FLAG_TIMESETTER + DUK_DATE_FLAG_LOCALTIME + (1 << DUK_DATE_FLAG_VALUE_SHIFT), - - /* 25: setUTCMilliseconds */ - DUK_DATE_FLAG_TIMESETTER + (1 << DUK_DATE_FLAG_VALUE_SHIFT), - - /* 26: setSeconds */ - DUK_DATE_FLAG_TIMESETTER + DUK_DATE_FLAG_LOCALTIME + (2 << DUK_DATE_FLAG_VALUE_SHIFT), - - /* 27: setUTCSeconds */ - DUK_DATE_FLAG_TIMESETTER + (2 << DUK_DATE_FLAG_VALUE_SHIFT), - - /* 28: setMinutes */ - DUK_DATE_FLAG_TIMESETTER + DUK_DATE_FLAG_LOCALTIME + (3 << DUK_DATE_FLAG_VALUE_SHIFT), - - /* 29: setUTCMinutes */ - DUK_DATE_FLAG_TIMESETTER + (3 << DUK_DATE_FLAG_VALUE_SHIFT), - - /* 30: setHours */ - DUK_DATE_FLAG_TIMESETTER + DUK_DATE_FLAG_LOCALTIME + (4 << DUK_DATE_FLAG_VALUE_SHIFT), - - /* 31: setUTCHours */ - DUK_DATE_FLAG_TIMESETTER + (4 << DUK_DATE_FLAG_VALUE_SHIFT), - - /* 32: setDate */ - DUK_DATE_FLAG_LOCALTIME + (1 << DUK_DATE_FLAG_VALUE_SHIFT), - - /* 33: setUTCDate */ - 0 + (1 << DUK_DATE_FLAG_VALUE_SHIFT), - - /* 34: setMonth */ - DUK_DATE_FLAG_LOCALTIME + (2 << DUK_DATE_FLAG_VALUE_SHIFT), - - /* 35: setUTCMonth */ - 0 + (2 << DUK_DATE_FLAG_VALUE_SHIFT), - - /* 36: setFullYear */ - DUK_DATE_FLAG_NAN_TO_ZERO + DUK_DATE_FLAG_LOCALTIME + (3 << DUK_DATE_FLAG_VALUE_SHIFT), - - /* 37: setUTCFullYear */ - DUK_DATE_FLAG_NAN_TO_ZERO + (3 << DUK_DATE_FLAG_VALUE_SHIFT), - - /* 38: getYear */ - DUK_DATE_FLAG_LOCALTIME + DUK_DATE_FLAG_SUB1900 + (DUK_DATE_IDX_YEAR << DUK_DATE_FLAG_VALUE_SHIFT), - - /* 39: setYear */ - DUK_DATE_FLAG_NAN_TO_ZERO + DUK_DATE_FLAG_YEAR_FIXUP + (3 << DUK_DATE_FLAG_VALUE_SHIFT), -}; - -DUK_LOCAL duk_small_uint_t duk__date_get_indirect_magic(duk_hthread *thr) { - duk_small_uint_t magicidx = (duk_small_uint_t) duk_get_current_magic(thr); - DUK_ASSERT(magicidx < (duk_small_int_t) (sizeof(duk__date_magics) / sizeof(duk_uint16_t))); - return (duk_small_uint_t) duk__date_magics[magicidx]; -} - -#if defined(DUK_USE_DATE_BUILTIN) -/* - * Constructor calls - */ - -DUK_INTERNAL duk_ret_t duk_bi_date_constructor(duk_hthread *thr) { - duk_idx_t nargs = duk_get_top(thr); - duk_bool_t is_cons = duk_is_constructor_call(thr); - duk_double_t dparts[DUK_DATE_IDX_NUM_PARTS]; - duk_double_t d; - - DUK_DDD(DUK_DDDPRINT("Date constructor, nargs=%ld, is_cons=%ld", (long) nargs, (long) is_cons)); - - (void) duk_push_object_helper(thr, - DUK_HOBJECT_FLAG_EXTENSIBLE | DUK_HOBJECT_FLAG_FASTREFS | - DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_DATE), - DUK_BIDX_DATE_PROTOTYPE); - - /* Unlike most built-ins, the internal [[PrimitiveValue]] of a Date - * is mutable. - */ - - if (nargs == 0 || !is_cons) { - d = duk__timeclip(duk_time_get_ecmascript_time_nofrac(thr)); - duk_push_number(thr, d); - duk_xdef_prop_stridx_short(thr, -2, DUK_STRIDX_INT_VALUE, DUK_PROPDESC_FLAGS_W); - if (!is_cons) { - /* called as a normal function: return new Date().toString() */ - duk_to_string(thr, -1); - } - return 1; - } else if (nargs == 1) { - const char *str; - duk_to_primitive(thr, 0, DUK_HINT_NONE); - str = duk_get_string_notsymbol(thr, 0); - if (str) { - duk__parse_string(thr, str); - duk_replace(thr, 0); /* may be NaN */ - } - d = duk__timeclip(duk_to_number(thr, 0)); /* symbols fail here */ - duk_push_number(thr, d); - duk_xdef_prop_stridx_short(thr, -2, DUK_STRIDX_INT_VALUE, DUK_PROPDESC_FLAGS_W); - return 1; - } - - duk__set_parts_from_args(thr, dparts, nargs); - - /* Parts are in local time, convert when setting. */ - - (void) duk__set_this_timeval_from_dparts(thr, dparts, DUK_DATE_FLAG_LOCALTIME /*flags*/); /* -> [ ... this timeval ] */ - duk_pop(thr); /* -> [ ... this ] */ - return 1; -} - -DUK_INTERNAL duk_ret_t duk_bi_date_constructor_parse(duk_hthread *thr) { - return duk__parse_string(thr, duk_to_string(thr, 0)); -} - -DUK_INTERNAL duk_ret_t duk_bi_date_constructor_utc(duk_hthread *thr) { - duk_idx_t nargs = duk_get_top(thr); - duk_double_t dparts[DUK_DATE_IDX_NUM_PARTS]; - duk_double_t d; - - /* Behavior for nargs < 2 is implementation dependent: currently we'll - * set a NaN time value (matching V8 behavior) in this case. - */ - - if (nargs < 2) { - duk_push_nan(thr); - } else { - duk__set_parts_from_args(thr, dparts, nargs); - d = duk_bi_date_get_timeval_from_dparts(dparts, 0 /*flags*/); - duk_push_number(thr, d); - } - return 1; -} - -DUK_INTERNAL duk_ret_t duk_bi_date_constructor_now(duk_hthread *thr) { - duk_double_t d; - - d = duk_time_get_ecmascript_time_nofrac(thr); - DUK_ASSERT(duk_double_equals(duk__timeclip(d), d)); /* TimeClip() should never be necessary */ - duk_push_number(thr, d); - return 1; -} - -/* - * String/JSON conversions - * - * Human readable conversions are now basically ISO 8601 with a space - * (instead of 'T') as the date/time separator. This is a good baseline - * and is platform independent. - * - * A shared native helper to provide many conversions. Magic value contains - * a set of flags. The helper provides: - * - * toString() - * toDateString() - * toTimeString() - * toLocaleString() - * toLocaleDateString() - * toLocaleTimeString() - * toUTCString() - * toISOString() - * - * Notes: - * - * - Date.prototype.toGMTString() and Date.prototype.toUTCString() are - * required to be the same ECMAScript function object (!), so it is - * omitted from here. - * - * - Date.prototype.toUTCString(): E5.1 specification does not require a - * specific format, but result should be human readable. The - * specification suggests using ISO 8601 format with a space (instead - * of 'T') separator if a more human readable format is not available. - * - * - Date.prototype.toISOString(): unlike other conversion functions, - * toISOString() requires a RangeError for invalid date values. - */ - -DUK_INTERNAL duk_ret_t duk_bi_date_prototype_tostring_shared(duk_hthread *thr) { - duk_small_uint_t flags = duk__date_get_indirect_magic(thr); - return duk__to_string_helper(thr, flags); -} - -DUK_INTERNAL duk_ret_t duk_bi_date_prototype_value_of(duk_hthread *thr) { - /* This native function is also used for Date.prototype.getTime() - * as their behavior is identical. - */ - - duk_double_t d = duk__push_this_get_timeval(thr, 0 /*flags*/); /* -> [ this ] */ - DUK_ASSERT(DUK_ISFINITE(d) || DUK_ISNAN(d)); - duk_push_number(thr, d); - return 1; -} - -DUK_INTERNAL duk_ret_t duk_bi_date_prototype_to_json(duk_hthread *thr) { - /* Note: toJSON() is a generic function which works even if 'this' - * is not a Date. The sole argument is ignored. - */ - - duk_push_this(thr); - duk_to_object(thr, -1); - - duk_dup_top(thr); - duk_to_primitive(thr, -1, DUK_HINT_NUMBER); - if (duk_is_number(thr, -1)) { - duk_double_t d = duk_get_number(thr, -1); - if (!DUK_ISFINITE(d)) { - duk_push_null(thr); - return 1; - } - } - duk_pop(thr); - - duk_get_prop_stridx_short(thr, -1, DUK_STRIDX_TO_ISO_STRING); - duk_dup_m2(thr); /* -> [ O toIsoString O ] */ - duk_call_method(thr, 0); - return 1; -} - -/* - * Getters. - * - * Implementing getters is quite easy. The internal time value is either - * NaN, or represents milliseconds (without fractions) from Jan 1, 1970. - * The internal time value can be converted to integer parts, and each - * part will be normalized and will fit into a 32-bit signed integer. - * - * A shared native helper to provide all getters. Magic value contains - * a set of flags and also packs the date component index argument. The - * helper provides: - * - * getFullYear() - * getUTCFullYear() - * getMonth() - * getUTCMonth() - * getDate() - * getUTCDate() - * getDay() - * getUTCDay() - * getHours() - * getUTCHours() - * getMinutes() - * getUTCMinutes() - * getSeconds() - * getUTCSeconds() - * getMilliseconds() - * getUTCMilliseconds() - * getYear() - * - * Notes: - * - * - Date.prototype.getDate(): 'date' means day-of-month, and is - * zero-based in internal calculations but public API expects it to - * be one-based. - * - * - Date.prototype.getTime() and Date.prototype.valueOf() have identical - * behavior. They have separate function objects, but share the same C - * function (duk_bi_date_prototype_value_of). - */ - -DUK_INTERNAL duk_ret_t duk_bi_date_prototype_get_shared(duk_hthread *thr) { - duk_small_uint_t flags_and_idx = duk__date_get_indirect_magic(thr); - return duk__get_part_helper(thr, flags_and_idx); -} - -DUK_INTERNAL duk_ret_t duk_bi_date_prototype_get_timezone_offset(duk_hthread *thr) { - /* - * Return (t - LocalTime(t)) in minutes: - * - * t - LocalTime(t) = t - (t + LocalTZA + DaylightSavingTA(t)) - * = -(LocalTZA + DaylightSavingTA(t)) - * - * where DaylightSavingTA() is checked for time 't'. - * - * Note that the sign of the result is opposite to common usage, - * e.g. for EE(S)T which normally is +2h or +3h from UTC, this - * function returns -120 or -180. - * - */ - - duk_double_t d; - duk_int_t tzoffset; - - /* Note: DST adjustment is determined using UTC time. */ - d = duk__push_this_get_timeval(thr, 0 /*flags*/); - DUK_ASSERT(DUK_ISFINITE(d) || DUK_ISNAN(d)); - if (DUK_ISNAN(d)) { - duk_push_nan(thr); - } else { - DUK_ASSERT(DUK_ISFINITE(d)); - tzoffset = DUK_USE_DATE_GET_LOCAL_TZOFFSET(d); - duk_push_int(thr, -tzoffset / 60); - } - return 1; -} - -/* - * Setters. - * - * Setters are a bit more complicated than getters. Component setters - * break down the current time value into its (normalized) component - * parts, replace one or more components with -unnormalized- new values, - * and the components are then converted back into a time value. As an - * example of using unnormalized values: - * - * var d = new Date(1234567890); - * - * is equivalent to: - * - * var d = new Date(0); - * d.setUTCMilliseconds(1234567890); - * - * A shared native helper to provide almost all setters. Magic value - * contains a set of flags and also packs the "maxnargs" argument. The - * helper provides: - * - * setMilliseconds() - * setUTCMilliseconds() - * setSeconds() - * setUTCSeconds() - * setMinutes() - * setUTCMinutes() - * setHours() - * setUTCHours() - * setDate() - * setUTCDate() - * setMonth() - * setUTCMonth() - * setFullYear() - * setUTCFullYear() - * setYear() - * - * Notes: - * - * - Date.prototype.setYear() (Section B addition): special year check - * is omitted. NaN / Infinity will just flow through and ultimately - * result in a NaN internal time value. - * - * - Date.prototype.setYear() does not have optional arguments for - * setting month and day-in-month (like setFullYear()), but we indicate - * 'maxnargs' to be 3 to get the year written to the correct component - * index in duk__set_part_helper(). The function has nargs == 1, so only - * the year will be set regardless of actual argument count. - */ - -DUK_INTERNAL duk_ret_t duk_bi_date_prototype_set_shared(duk_hthread *thr) { - duk_small_uint_t flags_and_maxnargs = duk__date_get_indirect_magic(thr); - return duk__set_part_helper(thr, flags_and_maxnargs); -} - -DUK_INTERNAL duk_ret_t duk_bi_date_prototype_set_time(duk_hthread *thr) { - duk_double_t d; - - (void) duk__push_this_get_timeval(thr, 0 /*flags*/); /* -> [ timeval this ] */ - d = duk__timeclip(duk_to_number(thr, 0)); - duk_push_number(thr, d); - duk_dup_top(thr); - /* Must force write because .setTime() must work even when - * the Date instance is frozen. - */ - duk_xdef_prop_stridx_short(thr, -3, DUK_STRIDX_INT_VALUE, DUK_PROPDESC_FLAGS_W); - /* -> [ timeval this timeval ] */ - - return 1; -} - -/* - * Misc. - */ - -#if defined(DUK_USE_SYMBOL_BUILTIN) -DUK_INTERNAL duk_ret_t duk_bi_date_prototype_toprimitive(duk_hthread *thr) { - duk_size_t hintlen; - const char *hintstr; - duk_int_t hint; - - /* Invokes OrdinaryToPrimitive() with suitable hint. Note that the - * method is generic, and works on non-Date arguments too. - * - * https://www.ecma-international.org/ecma-262/6.0/#sec-date.prototype-@@toprimitive - */ - - duk_push_this(thr); - duk_require_object(thr, -1); - DUK_ASSERT_TOP(thr, 2); - - hintstr = duk_require_lstring(thr, 0, &hintlen); - if ((hintlen == 6 && DUK_STRCMP(hintstr, "string") == 0) || (hintlen == 7 && DUK_STRCMP(hintstr, "default") == 0)) { - hint = DUK_HINT_STRING; - } else if (hintlen == 6 && DUK_STRCMP(hintstr, "number") == 0) { - hint = DUK_HINT_NUMBER; - } else { - DUK_DCERROR_TYPE_INVALID_ARGS(thr); - } - - duk_to_primitive_ordinary(thr, -1, hint); - return 1; -} -#endif /* DUK_USE_SYMBOL_BUILTIN */ - -#endif /* DUK_USE_DATE_BUILTIN */ - -/* automatic undefs */ -#undef DUK__CF_ACCEPT -#undef DUK__CF_ACCEPT_NUL -#undef DUK__CF_NEG -#undef DUK__DPRINT_DPARTS -#undef DUK__DPRINT_PARTS -#undef DUK__DPRINT_PARTS_AND_DPARTS -#undef DUK__LOCAL_TZOFFSET_MAXITER -#undef DUK__NUM_ISO8601_PARSER_PARTS -#undef DUK__PACK_RULE -#undef DUK__PI_DAY -#undef DUK__PI_HOUR -#undef DUK__PI_MILLISECOND -#undef DUK__PI_MINUTE -#undef DUK__PI_MONTH -#undef DUK__PI_SECOND -#undef DUK__PI_TZHOUR -#undef DUK__PI_TZMINUTE -#undef DUK__PI_YEAR -#undef DUK__PM_DAY -#undef DUK__PM_HOUR -#undef DUK__PM_MILLISECOND -#undef DUK__PM_MINUTE -#undef DUK__PM_MONTH -#undef DUK__PM_SECOND -#undef DUK__PM_TZHOUR -#undef DUK__PM_TZMINUTE -#undef DUK__PM_YEAR -#undef DUK__RULE_MASK_PART_SEP -#undef DUK__SI_COLON -#undef DUK__SI_MINUS -#undef DUK__SI_NUL -#undef DUK__SI_PERIOD -#undef DUK__SI_PLUS -#undef DUK__SI_SPACE -#undef DUK__SI_T -#undef DUK__SI_Z -#undef DUK__SM_COLON -#undef DUK__SM_MINUS -#undef DUK__SM_NUL -#undef DUK__SM_PERIOD -#undef DUK__SM_PLUS -#undef DUK__SM_SPACE -#undef DUK__SM_T -#undef DUK__SM_Z -#undef DUK__UNPACK_RULE -#undef DUK__WEEKDAY_MOD_ADDER -#undef DUK__YEAR -#line 1 "duk_bi_date_unix.c" -/* - * Unix-like Date providers - * - * Generally useful Unix / POSIX / ANSI Date providers. - */ - -/* #include duk_internal.h -> already included */ - -/* The necessary #includes are in place in duk_config.h. */ - -/* Buffer sizes for some UNIX calls. Larger than strictly necessary - * to avoid Valgrind errors. - */ -#define DUK__STRPTIME_BUF_SIZE 64 -#define DUK__STRFTIME_BUF_SIZE 64 - -#if defined(DUK_USE_DATE_NOW_GETTIMEOFDAY) -/* Get current ECMAScript time (= UNIX/Posix time, but in milliseconds). */ -DUK_INTERNAL duk_double_t duk_bi_date_get_now_gettimeofday(void) { - struct timeval tv; - duk_double_t d; - - if (gettimeofday(&tv, NULL) != 0) { - DUK_D(DUK_DPRINT("gettimeofday() failed")); - return 0.0; - } - - /* As of Duktape 2.2.0 allow fractions. */ - d = ((duk_double_t) tv.tv_sec) * 1000.0 + ((duk_double_t) tv.tv_usec) / 1000.0; - - return d; -} -#endif /* DUK_USE_DATE_NOW_GETTIMEOFDAY */ - -#if defined(DUK_USE_DATE_NOW_TIME) -/* Not a very good provider: only full seconds are available. */ -DUK_INTERNAL duk_double_t duk_bi_date_get_now_time(void) { - time_t t; - - t = time(NULL); - if (t == (time_t) -1) { - DUK_D(DUK_DPRINT("time() failed")); - return 0.0; - } - return ((duk_double_t) t) * 1000.0; -} -#endif /* DUK_USE_DATE_NOW_TIME */ - -#if defined(DUK_USE_DATE_TZO_GMTIME) || defined(DUK_USE_DATE_TZO_GMTIME_R) || defined(DUK_USE_DATE_TZO_GMTIME_S) -/* Get local time offset (in seconds) for a certain (UTC) instant 'd'. */ -DUK_INTERNAL duk_int_t duk_bi_date_get_local_tzoffset_gmtime(duk_double_t d) { - time_t t, t1, t2; - duk_int_t parts[DUK_DATE_IDX_NUM_PARTS]; - duk_double_t dparts[DUK_DATE_IDX_NUM_PARTS]; - struct tm tms[2]; -#if defined(DUK_USE_DATE_TZO_GMTIME) - struct tm *tm_ptr; -#endif - - /* For NaN/inf, the return value doesn't matter. */ - if (!DUK_ISFINITE(d)) { - return 0; - } - - /* If not within ECMAScript range, some integer time calculations - * won't work correctly (and some asserts will fail), so bail out - * if so. This fixes test-bug-date-insane-setyear.js. There is - * a +/- 24h leeway in this range check to avoid a test262 corner - * case documented in test-bug-date-timeval-edges.js. - */ - if (!duk_bi_date_timeval_in_leeway_range(d)) { - DUK_DD(DUK_DDPRINT("timeval not within valid range, skip tzoffset computation to avoid integer overflows")); - return 0; - } - - /* - * This is a bit tricky to implement portably. The result depends - * on the timestamp (specifically, DST depends on the timestamp). - * If e.g. UNIX APIs are used, they'll have portability issues with - * very small and very large years. - * - * Current approach: - * - * - Stay within portable UNIX limits by using equivalent year mapping. - * Avoid year 1970 and 2038 as some conversions start to fail, at - * least on some platforms. Avoiding 1970 means that there are - * currently DST discrepancies for 1970. - * - * - Create a UTC and local time breakdowns from 't'. Then create - * a time_t using gmtime() and localtime() and compute the time - * difference between the two. - * - * Equivalent year mapping (E5 Section 15.9.1.8): - * - * If the host environment provides functionality for determining - * daylight saving time, the implementation of ECMAScript is free - * to map the year in question to an equivalent year (same - * leap-year-ness and same starting week day for the year) for which - * the host environment provides daylight saving time information. - * The only restriction is that all equivalent years should produce - * the same result. - * - * This approach is quite reasonable but not entirely correct, e.g. - * the specification also states (E5 Section 15.9.1.8): - * - * The implementation of ECMAScript should not try to determine - * whether the exact time was subject to daylight saving time, but - * just whether daylight saving time would have been in effect if - * the _current daylight saving time algorithm_ had been used at the - * time. This avoids complications such as taking into account the - * years that the locale observed daylight saving time year round. - * - * Since we rely on the platform APIs for conversions between local - * time and UTC, we can't guarantee the above. Rather, if the platform - * has historical DST rules they will be applied. This seems to be the - * general preferred direction in ECMAScript standardization (or at least - * implementations) anyway, and even the equivalent year mapping should - * be disabled if the platform is known to handle DST properly for the - * full ECMAScript range. - * - * The following has useful discussion and links: - * - * https://bugzilla.mozilla.org/show_bug.cgi?id=351066 - */ - - duk_bi_date_timeval_to_parts(d, parts, dparts, DUK_DATE_FLAG_EQUIVYEAR /*flags*/); - DUK_ASSERT(parts[DUK_DATE_IDX_YEAR] >= 1970 && parts[DUK_DATE_IDX_YEAR] <= 2038); - - d = duk_bi_date_get_timeval_from_dparts(dparts, 0 /*flags*/); - DUK_ASSERT(d >= 0 && d < 2147483648.0 * 1000.0); /* unsigned 31-bit range */ - t = (time_t) (d / 1000.0); - DUK_DDD(DUK_DDDPRINT("timeval: %lf -> time_t %ld", (double) d, (long) t)); - - duk_memzero((void *) tms, sizeof(struct tm) * 2); - -#if defined(DUK_USE_DATE_TZO_GMTIME_R) - (void) gmtime_r(&t, &tms[0]); - (void) localtime_r(&t, &tms[1]); -#elif defined(DUK_USE_DATE_TZO_GMTIME_S) - (void) gmtime_s(&t, &tms[0]); - (void) localtime_s(&t, &tms[1]); -#elif defined(DUK_USE_DATE_TZO_GMTIME) - tm_ptr = gmtime(&t); - duk_memcpy((void *) &tms[0], tm_ptr, sizeof(struct tm)); - tm_ptr = localtime(&t); - duk_memcpy((void *) &tms[1], tm_ptr, sizeof(struct tm)); -#else -#error internal error -#endif - DUK_DDD(DUK_DDDPRINT("gmtime result: tm={sec:%ld,min:%ld,hour:%ld,mday:%ld,mon:%ld,year:%ld," - "wday:%ld,yday:%ld,isdst:%ld}", - (long) tms[0].tm_sec, - (long) tms[0].tm_min, - (long) tms[0].tm_hour, - (long) tms[0].tm_mday, - (long) tms[0].tm_mon, - (long) tms[0].tm_year, - (long) tms[0].tm_wday, - (long) tms[0].tm_yday, - (long) tms[0].tm_isdst)); - DUK_DDD(DUK_DDDPRINT("localtime result: tm={sec:%ld,min:%ld,hour:%ld,mday:%ld,mon:%ld,year:%ld," - "wday:%ld,yday:%ld,isdst:%ld}", - (long) tms[1].tm_sec, - (long) tms[1].tm_min, - (long) tms[1].tm_hour, - (long) tms[1].tm_mday, - (long) tms[1].tm_mon, - (long) tms[1].tm_year, - (long) tms[1].tm_wday, - (long) tms[1].tm_yday, - (long) tms[1].tm_isdst)); - - /* tm_isdst is both an input and an output to mktime(), use 0 to - * avoid DST handling in mktime(): - * - https://github.com/svaarala/duktape/issues/406 - * - http://stackoverflow.com/questions/8558919/mktime-and-tm-isdst - */ - tms[0].tm_isdst = 0; - tms[1].tm_isdst = 0; - t1 = mktime(&tms[0]); /* UTC */ - t2 = mktime(&tms[1]); /* local */ - if (t1 == (time_t) -1 || t2 == (time_t) -1) { - /* This check used to be for (t < 0) but on some platforms - * time_t is unsigned and apparently the proper way to detect - * an mktime() error return is the cast above. See e.g.: - * http://pubs.opengroup.org/onlinepubs/009695299/functions/mktime.html - */ - goto mktime_error; - } - DUK_DDD(DUK_DDDPRINT("t1=%ld (utc), t2=%ld (local)", (long) t1, (long) t2)); - - /* Compute final offset in seconds, positive if local time ahead of - * UTC (returned value is UTC-to-local offset). - * - * difftime() returns a double, so coercion to int generates quite - * a lot of code. Direct subtraction is not portable, however. - * XXX: allow direct subtraction on known platforms. - */ -#if 0 - return (duk_int_t) (t2 - t1); -#endif - return (duk_int_t) difftime(t2, t1); - -mktime_error: - /* XXX: return something more useful, so that caller can throw? */ - DUK_D(DUK_DPRINT("mktime() failed, d=%lf", (double) d)); - return 0; -} -#endif /* DUK_USE_DATE_TZO_GMTIME */ - -#if defined(DUK_USE_DATE_PRS_STRPTIME) -DUK_INTERNAL duk_bool_t duk_bi_date_parse_string_strptime(duk_hthread *thr, const char *str) { - struct tm tm; - time_t t; - char buf[DUK__STRPTIME_BUF_SIZE]; - - /* Copy to buffer with slack to avoid Valgrind gripes from strptime. */ - DUK_ASSERT(str != NULL); - duk_memzero(buf, sizeof(buf)); /* valgrind whine without this */ - DUK_SNPRINTF(buf, sizeof(buf), "%s", (const char *) str); - buf[sizeof(buf) - 1] = (char) 0; - - DUK_DDD(DUK_DDDPRINT("parsing: '%s'", (const char *) buf)); - - duk_memzero(&tm, sizeof(tm)); - if (strptime((const char *) buf, "%c", &tm) != NULL) { - DUK_DDD(DUK_DDDPRINT("before mktime: tm={sec:%ld,min:%ld,hour:%ld,mday:%ld,mon:%ld,year:%ld," - "wday:%ld,yday:%ld,isdst:%ld}", - (long) tm.tm_sec, - (long) tm.tm_min, - (long) tm.tm_hour, - (long) tm.tm_mday, - (long) tm.tm_mon, - (long) tm.tm_year, - (long) tm.tm_wday, - (long) tm.tm_yday, - (long) tm.tm_isdst)); - tm.tm_isdst = -1; /* negative: dst info not available */ - - t = mktime(&tm); - DUK_DDD(DUK_DDDPRINT("mktime() -> %ld", (long) t)); - if (t >= 0) { - duk_push_number(thr, ((duk_double_t) t) * 1000.0); - return 1; - } - } - - return 0; -} -#endif /* DUK_USE_DATE_PRS_STRPTIME */ - -#if defined(DUK_USE_DATE_PRS_GETDATE) -DUK_INTERNAL duk_bool_t duk_bi_date_parse_string_getdate(duk_hthread *thr, const char *str) { - struct tm tm; - duk_small_int_t rc; - time_t t; - - /* For this to work, DATEMSK must be set, so this is not very - * convenient for an embeddable interpreter. - */ - - duk_memzero(&tm, sizeof(struct tm)); - rc = (duk_small_int_t) getdate_r(str, &tm); - DUK_DDD(DUK_DDDPRINT("getdate_r() -> %ld", (long) rc)); - - if (rc == 0) { - t = mktime(&tm); - DUK_DDD(DUK_DDDPRINT("mktime() -> %ld", (long) t)); - if (t >= 0) { - duk_push_number(thr, (duk_double_t) t); - return 1; - } - } - - return 0; -} -#endif /* DUK_USE_DATE_PRS_GETDATE */ - -#if defined(DUK_USE_DATE_FMT_STRFTIME) -DUK_INTERNAL duk_bool_t duk_bi_date_format_parts_strftime(duk_hthread *thr, - duk_int_t *parts, - duk_int_t tzoffset, - duk_small_uint_t flags) { - char buf[DUK__STRFTIME_BUF_SIZE]; - struct tm tm; - const char *fmt; - - DUK_UNREF(tzoffset); - - /* If the platform doesn't support the entire ECMAScript range, we need - * to return 0 so that the caller can fall back to the default formatter. - * - * For now, assume that if time_t is 8 bytes or more, the whole ECMAScript - * range is supported. For smaller time_t values (4 bytes in practice), - * assumes that the signed 32-bit range is supported. - * - * XXX: detect this more correctly per platform. The size of time_t is - * probably not an accurate guarantee of strftime() supporting or not - * supporting a large time range (the full ECMAScript range). - */ - if (sizeof(time_t) < 8 && (parts[DUK_DATE_IDX_YEAR] < 1970 || parts[DUK_DATE_IDX_YEAR] > 2037)) { - /* be paranoid for 32-bit time values (even avoiding negative ones) */ - return 0; - } - - duk_memzero(&tm, sizeof(tm)); - tm.tm_sec = parts[DUK_DATE_IDX_SECOND]; - tm.tm_min = parts[DUK_DATE_IDX_MINUTE]; - tm.tm_hour = parts[DUK_DATE_IDX_HOUR]; - tm.tm_mday = parts[DUK_DATE_IDX_DAY]; /* already one-based */ - tm.tm_mon = parts[DUK_DATE_IDX_MONTH] - 1; /* one-based -> zero-based */ - tm.tm_year = parts[DUK_DATE_IDX_YEAR] - 1900; - tm.tm_wday = parts[DUK_DATE_IDX_WEEKDAY]; - tm.tm_isdst = 0; - - duk_memzero(buf, sizeof(buf)); - if ((flags & DUK_DATE_FLAG_TOSTRING_DATE) && (flags & DUK_DATE_FLAG_TOSTRING_TIME)) { - fmt = "%c"; - } else if (flags & DUK_DATE_FLAG_TOSTRING_DATE) { - fmt = "%x"; - } else { - DUK_ASSERT(flags & DUK_DATE_FLAG_TOSTRING_TIME); - fmt = "%X"; - } - (void) strftime(buf, sizeof(buf) - 1, fmt, &tm); - DUK_ASSERT(buf[sizeof(buf) - 1] == 0); - - duk_push_string(thr, buf); - return 1; -} -#endif /* DUK_USE_DATE_FMT_STRFTIME */ - -#if defined(DUK_USE_GET_MONOTONIC_TIME_CLOCK_GETTIME) -DUK_INTERNAL duk_double_t duk_bi_date_get_monotonic_time_clock_gettime(void) { - struct timespec ts; - - if (clock_gettime(CLOCK_MONOTONIC, &ts) == 0) { - return (duk_double_t) ts.tv_sec * 1000.0 + (duk_double_t) ts.tv_nsec / 1000000.0; - } else { - DUK_D(DUK_DPRINT("clock_gettime(CLOCK_MONOTONIC) failed")); - return 0.0; - } -} -#endif - -/* automatic undefs */ -#undef DUK__STRFTIME_BUF_SIZE -#undef DUK__STRPTIME_BUF_SIZE -#line 1 "duk_bi_date_windows.c" -/* - * Windows Date providers - * - * Platform specific links: - * - * - http://msdn.microsoft.com/en-us/library/windows/desktop/ms725473(v=vs.85).aspx - */ - -/* #include duk_internal.h -> already included */ - -/* The necessary #includes are in place in duk_config.h. */ - -#if defined(DUK_USE_DATE_NOW_WINDOWS) || defined(DUK_USE_DATE_TZO_WINDOWS) -/* Shared Windows helpers. */ -DUK_LOCAL void duk__convert_systime_to_ularge(const SYSTEMTIME *st, ULARGE_INTEGER *res) { - FILETIME ft; - if (SystemTimeToFileTime(st, &ft) == 0) { - DUK_D(DUK_DPRINT("SystemTimeToFileTime() failed, returning 0")); - res->QuadPart = 0; - } else { - res->LowPart = ft.dwLowDateTime; - res->HighPart = ft.dwHighDateTime; - } -} - -#if defined(DUK_USE_DATE_NOW_WINDOWS_SUBMS) -DUK_LOCAL void duk__convert_filetime_to_ularge(const FILETIME *ft, ULARGE_INTEGER *res) { - res->LowPart = ft->dwLowDateTime; - res->HighPart = ft->dwHighDateTime; -} -#endif /* DUK_USE_DATE_NOW_WINDOWS_SUBMS */ - -DUK_LOCAL void duk__set_systime_jan1970(SYSTEMTIME *st) { - duk_memzero((void *) st, sizeof(*st)); - st->wYear = 1970; - st->wMonth = 1; - st->wDayOfWeek = 4; /* not sure whether or not needed; Thursday */ - st->wDay = 1; - DUK_ASSERT(st->wHour == 0); - DUK_ASSERT(st->wMinute == 0); - DUK_ASSERT(st->wSecond == 0); - DUK_ASSERT(st->wMilliseconds == 0); -} -#endif /* defined(DUK_USE_DATE_NOW_WINDOWS) || defined(DUK_USE_DATE_TZO_WINDOWS) */ - -#if defined(DUK_USE_DATE_NOW_WINDOWS) -DUK_INTERNAL duk_double_t duk_bi_date_get_now_windows(void) { - /* Suggested step-by-step method from documentation of RtlTimeToSecondsSince1970: - * http://msdn.microsoft.com/en-us/library/windows/desktop/ms724928(v=vs.85).aspx - */ - SYSTEMTIME st1, st2; - ULARGE_INTEGER tmp1, tmp2; - - GetSystemTime(&st1); - duk__convert_systime_to_ularge((const SYSTEMTIME *) &st1, &tmp1); - - duk__set_systime_jan1970(&st2); - duk__convert_systime_to_ularge((const SYSTEMTIME *) &st2, &tmp2); - - /* Difference is in 100ns units, convert to milliseconds, keeping - * fractions since Duktape 2.2.0. This is only theoretical because - * SYSTEMTIME is limited to milliseconds. - */ - return (duk_double_t) ((LONGLONG) tmp1.QuadPart - (LONGLONG) tmp2.QuadPart) / 10000.0; -} -#endif /* DUK_USE_DATE_NOW_WINDOWS */ - -#if defined(DUK_USE_DATE_NOW_WINDOWS_SUBMS) -DUK_INTERNAL duk_double_t duk_bi_date_get_now_windows_subms(void) { - /* Variant of the basic algorithm using GetSystemTimePreciseAsFileTime() - * for more accuracy. - */ - FILETIME ft1; - SYSTEMTIME st2; - ULARGE_INTEGER tmp1, tmp2; - - GetSystemTimePreciseAsFileTime(&ft1); - duk__convert_filetime_to_ularge((const FILETIME *) &ft1, &tmp1); - - duk__set_systime_jan1970(&st2); - duk__convert_systime_to_ularge((const SYSTEMTIME *) &st2, &tmp2); - - /* Difference is in 100ns units, convert to milliseconds, keeping - * fractions since Duktape 2.2.0. - */ - return (duk_double_t) ((LONGLONG) tmp1.QuadPart - (LONGLONG) tmp2.QuadPart) / 10000.0; -} -#endif /* DUK_USE_DATE_NOW_WINDOWS */ - -#if defined(DUK_USE_DATE_TZO_WINDOWS) -DUK_INTERNAL duk_int_t duk_bi_date_get_local_tzoffset_windows(duk_double_t d) { - SYSTEMTIME st1; - SYSTEMTIME st2; - SYSTEMTIME st3; - ULARGE_INTEGER tmp1; - ULARGE_INTEGER tmp2; - ULARGE_INTEGER tmp3; - FILETIME ft1; - - /* XXX: handling of timestamps outside Windows supported range. - * How does Windows deal with dates before 1600? Does windows - * support all ECMAScript years (like -200000 and +200000)? - * Should equivalent year mapping be used here too? If so, use - * a shared helper (currently integrated into timeval-to-parts). - */ - - /* Use the approach described in "Remarks" of FileTimeToLocalFileTime: - * http://msdn.microsoft.com/en-us/library/windows/desktop/ms724277(v=vs.85).aspx - */ - - duk__set_systime_jan1970(&st1); - duk__convert_systime_to_ularge((const SYSTEMTIME *) &st1, &tmp1); - tmp2.QuadPart = (ULONGLONG) (d * 10000.0); /* millisec -> 100ns units since jan 1, 1970 */ - tmp2.QuadPart += tmp1.QuadPart; /* input 'd' in Windows UTC, 100ns units */ - - ft1.dwLowDateTime = tmp2.LowPart; - ft1.dwHighDateTime = tmp2.HighPart; - if (FileTimeToSystemTime((const FILETIME *) &ft1, &st2) == 0) { - DUK_D(DUK_DPRINT("FileTimeToSystemTime() failed, return tzoffset 0")); - return 0; - } - if (SystemTimeToTzSpecificLocalTime((LPTIME_ZONE_INFORMATION) NULL, &st2, &st3) == 0) { - DUK_D(DUK_DPRINT("SystemTimeToTzSpecificLocalTime() failed, return tzoffset 0")); - return 0; - } - duk__convert_systime_to_ularge((const SYSTEMTIME *) &st3, &tmp3); - - /* Positive if local time ahead of UTC. */ - return (duk_int_t) (((LONGLONG) tmp3.QuadPart - (LONGLONG) tmp2.QuadPart) / DUK_I64_CONSTANT(10000000)); /* seconds */ -} -#endif /* DUK_USE_DATE_TZO_WINDOWS */ - -#if defined(DUK_USE_DATE_TZO_WINDOWS_NO_DST) -DUK_INTERNAL duk_int_t duk_bi_date_get_local_tzoffset_windows_no_dst(duk_double_t d) { - SYSTEMTIME st1; - SYSTEMTIME st2; - FILETIME ft1; - FILETIME ft2; - ULARGE_INTEGER tmp1; - ULARGE_INTEGER tmp2; - - /* Do a similar computation to duk_bi_date_get_local_tzoffset_windows - * but without accounting for daylight savings time. Use this on - * Windows platforms (like Durango) that don't support the - * SystemTimeToTzSpecificLocalTime() call. - */ - - /* current time not needed for this computation */ - DUK_UNREF(d); - - duk__set_systime_jan1970(&st1); - duk__convert_systime_to_ularge((const SYSTEMTIME *) &st1, &tmp1); - - ft1.dwLowDateTime = tmp1.LowPart; - ft1.dwHighDateTime = tmp1.HighPart; - if (FileTimeToLocalFileTime((const FILETIME *) &ft1, &ft2) == 0) { - DUK_D(DUK_DPRINT("FileTimeToLocalFileTime() failed, return tzoffset 0")); - return 0; - } - if (FileTimeToSystemTime((const FILETIME *) &ft2, &st2) == 0) { - DUK_D(DUK_DPRINT("FileTimeToSystemTime() failed, return tzoffset 0")); - return 0; - } - duk__convert_systime_to_ularge((const SYSTEMTIME *) &st2, &tmp2); - - return (duk_int_t) (((LONGLONG) tmp2.QuadPart - (LONGLONG) tmp1.QuadPart) / DUK_I64_CONSTANT(10000000)); /* seconds */ -} -#endif /* DUK_USE_DATE_TZO_WINDOWS_NO_DST */ - -#if defined(DUK_USE_GET_MONOTONIC_TIME_WINDOWS_QPC) -DUK_INTERNAL duk_double_t duk_bi_date_get_monotonic_time_windows_qpc(void) { - LARGE_INTEGER count, freq; - - /* There are legacy issues with QueryPerformanceCounter(): - * - Potential jumps: - * https://support.microsoft.com/en-us/help/274323/performance-counter-value-may-unexpectedly-leap-forward - * - Differences between cores (XP): - * https://msdn.microsoft.com/en-us/library/windows/desktop/dn553408(v=vs.85).aspx#qpc_support_in_windows_versions - * - * We avoid these by enabling QPC by default only for Vista or later. - */ - - if (QueryPerformanceCounter(&count) && QueryPerformanceFrequency(&freq)) { - /* XXX: QueryPerformanceFrequency() can be cached */ - return (duk_double_t) count.QuadPart / (duk_double_t) freq.QuadPart * 1000.0; - } else { - /* MSDN: "On systems that run Windows XP or later, the function - * will always succeed and will thus never return zero." - * Provide minimal error path just in case user enables this - * feature in pre-XP Windows. - */ - return 0.0; - } -} -#endif /* DUK_USE_GET_MONOTONIC_TIME_WINDOWS_QPC */ -#line 1 "duk_bi_duktape.c" -/* - * Duktape built-ins - * - * Size optimization note: it might seem that vararg multipurpose functions - * like fin(), enc(), and dec() are not very size optimal, but using a single - * user-visible ECMAScript function saves a lot of run-time footprint; each - * Function instance takes >100 bytes. Using a shared native helper and a - * 'magic' value won't save much if there are multiple Function instances - * anyway. - */ - -/* #include duk_internal.h -> already included */ - -#if defined(DUK_USE_DUKTAPE_BUILTIN) - -DUK_INTERNAL duk_ret_t duk_bi_duktape_object_info(duk_hthread *thr) { - duk_inspect_value(thr, -1); - return 1; -} - -DUK_INTERNAL duk_ret_t duk_bi_duktape_object_act(duk_hthread *thr) { - duk_int_t level; - - level = duk_to_int(thr, 0); - duk_inspect_callstack_entry(thr, level); - return 1; -} - -DUK_INTERNAL duk_ret_t duk_bi_duktape_object_gc(duk_hthread *thr) { - duk_small_uint_t flags; - - flags = (duk_small_uint_t) duk_get_uint(thr, 0); - duk_heap_mark_and_sweep(thr->heap, flags); - - /* XXX: Not sure what the best return value would be in the API. - * Return true for now. - */ - duk_push_true(thr); - return 1; -} - -#if defined(DUK_USE_FINALIZER_SUPPORT) -DUK_INTERNAL duk_ret_t duk_bi_duktape_object_fin(duk_hthread *thr) { - (void) duk_require_hobject(thr, 0); - if (duk_get_top(thr) >= 2) { - /* Set: currently a finalizer is disabled by setting it to - * undefined; this does not remove the property at the moment. - * The value could be type checked to be either a function - * or something else; if something else, the property could - * be deleted. Must use duk_set_finalizer() to keep - * DUK_HOBJECT_FLAG_HAVE_FINALIZER in sync. - */ - duk_set_top(thr, 2); - duk_set_finalizer(thr, 0); - return 0; - } else { - /* Get. */ - DUK_ASSERT(duk_get_top(thr) == 1); - duk_get_finalizer(thr, 0); - return 1; - } -} -#endif /* DUK_USE_FINALIZER_SUPPORT */ - -DUK_INTERNAL duk_ret_t duk_bi_duktape_object_enc(duk_hthread *thr) { - duk_hstring *h_str; - - /* Vararg function: must be careful to check/require arguments. - * The JSON helpers accept invalid indices and treat them like - * non-existent optional parameters. - */ - - h_str = duk_require_hstring(thr, 0); /* Could reject symbols, but no point: won't match comparisons. */ - duk_require_valid_index(thr, 1); - - if (h_str == DUK_HTHREAD_STRING_HEX(thr)) { - duk_set_top(thr, 2); - duk_hex_encode(thr, 1); - DUK_ASSERT_TOP(thr, 2); - } else if (h_str == DUK_HTHREAD_STRING_BASE64(thr)) { - duk_set_top(thr, 2); - duk_base64_encode(thr, 1); - DUK_ASSERT_TOP(thr, 2); -#if defined(DUK_USE_JSON_SUPPORT) && defined(DUK_USE_JX) - } else if (h_str == DUK_HTHREAD_STRING_JX(thr)) { - duk_bi_json_stringify_helper(thr, - 1 /*idx_value*/, - 2 /*idx_replacer*/, - 3 /*idx_space*/, - DUK_JSON_FLAG_EXT_CUSTOM | DUK_JSON_FLAG_ASCII_ONLY | - DUK_JSON_FLAG_AVOID_KEY_QUOTES /*flags*/); -#endif -#if defined(DUK_USE_JSON_SUPPORT) && defined(DUK_USE_JC) - } else if (h_str == DUK_HTHREAD_STRING_JC(thr)) { - duk_bi_json_stringify_helper(thr, - 1 /*idx_value*/, - 2 /*idx_replacer*/, - 3 /*idx_space*/, - DUK_JSON_FLAG_EXT_COMPATIBLE | DUK_JSON_FLAG_ASCII_ONLY /*flags*/); -#endif - } else { - DUK_DCERROR_TYPE_INVALID_ARGS(thr); - } - return 1; -} - -DUK_INTERNAL duk_ret_t duk_bi_duktape_object_dec(duk_hthread *thr) { - duk_hstring *h_str; - - /* Vararg function: must be careful to check/require arguments. - * The JSON helpers accept invalid indices and treat them like - * non-existent optional parameters. - */ - - h_str = duk_require_hstring(thr, 0); /* Could reject symbols, but no point: won't match comparisons */ - duk_require_valid_index(thr, 1); - - if (h_str == DUK_HTHREAD_STRING_HEX(thr)) { - duk_set_top(thr, 2); - duk_hex_decode(thr, 1); - DUK_ASSERT_TOP(thr, 2); - } else if (h_str == DUK_HTHREAD_STRING_BASE64(thr)) { - duk_set_top(thr, 2); - duk_base64_decode(thr, 1); - DUK_ASSERT_TOP(thr, 2); -#if defined(DUK_USE_JSON_SUPPORT) && defined(DUK_USE_JX) - } else if (h_str == DUK_HTHREAD_STRING_JX(thr)) { - duk_bi_json_parse_helper(thr, 1 /*idx_value*/, 2 /*idx_replacer*/, DUK_JSON_FLAG_EXT_CUSTOM /*flags*/); -#endif -#if defined(DUK_USE_JSON_SUPPORT) && defined(DUK_USE_JC) - } else if (h_str == DUK_HTHREAD_STRING_JC(thr)) { - duk_bi_json_parse_helper(thr, 1 /*idx_value*/, 2 /*idx_replacer*/, DUK_JSON_FLAG_EXT_COMPATIBLE /*flags*/); -#endif - } else { - DUK_DCERROR_TYPE_INVALID_ARGS(thr); - } - return 1; -} - -/* - * Compact an object - */ - -DUK_INTERNAL duk_ret_t duk_bi_duktape_object_compact(duk_hthread *thr) { - DUK_ASSERT_TOP(thr, 1); - duk_compact(thr, 0); - return 1; /* return the argument object */ -} - -#endif /* DUK_USE_DUKTAPE_BUILTIN */ -#line 1 "duk_bi_encoding.c" -/* - * WHATWG Encoding API built-ins - * - * API specification: https://encoding.spec.whatwg.org/#api - * Web IDL: https://www.w3.org/TR/WebIDL/ - */ - -/* #include duk_internal.h -> already included */ - -/* - * Data structures for encoding/decoding - */ - -typedef struct { - duk_uint8_t *out; /* where to write next byte(s) */ - duk_codepoint_t lead; /* lead surrogate */ -} duk__encode_context; - -typedef struct { - /* UTF-8 decoding state */ - duk_codepoint_t codepoint; /* built up incrementally */ - duk_uint8_t upper; /* max value of next byte (decode error otherwise) */ - duk_uint8_t lower; /* min value of next byte (ditto) */ - duk_uint8_t needed; /* how many more bytes we need */ - duk_uint8_t bom_handled; /* BOM seen or no longer expected */ - - /* Decoder configuration */ - duk_uint8_t fatal; - duk_uint8_t ignore_bom; -} duk__decode_context; - -/* The signed duk_codepoint_t type is used to signal a decoded codepoint - * (>= 0) or various other states using negative values. - */ -#define DUK__CP_CONTINUE (-1) /* continue to next byte, no completed codepoint */ -#define DUK__CP_ERROR (-2) /* decoding error */ -#define DUK__CP_RETRY (-3) /* decoding error; retry last byte */ - -/* - * Raw helpers for encoding/decoding - */ - -/* Emit UTF-8 (= CESU-8) encoded U+FFFD (replacement char), i.e. ef bf bd. */ -DUK_LOCAL duk_uint8_t *duk__utf8_emit_repl(duk_uint8_t *ptr) { - *ptr++ = 0xef; - *ptr++ = 0xbf; - *ptr++ = 0xbd; - return ptr; -} - -DUK_LOCAL void duk__utf8_decode_init(duk__decode_context *dec_ctx) { - /* (Re)init the decoding state of 'dec_ctx' but leave decoder - * configuration fields untouched. - */ - dec_ctx->codepoint = 0x0000L; - dec_ctx->upper = 0xbf; - dec_ctx->lower = 0x80; - dec_ctx->needed = 0; - dec_ctx->bom_handled = 0; -} - -DUK_LOCAL duk_codepoint_t duk__utf8_decode_next(duk__decode_context *dec_ctx, duk_uint8_t x) { - /* - * UTF-8 algorithm based on the Encoding specification: - * https://encoding.spec.whatwg.org/#utf-8-decoder - * - * Two main states: decoding initial byte vs. decoding continuation - * bytes. Shortest length encoding is validated by restricting the - * allowed range of first continuation byte using 'lower' and 'upper'. - */ - - if (dec_ctx->needed == 0) { - /* process initial byte */ - if (x <= 0x7f) { - /* U+0000-U+007F, 1 byte (ASCII) */ - return (duk_codepoint_t) x; - } else if (x >= 0xc2 && x <= 0xdf) { - /* U+0080-U+07FF, 2 bytes */ - dec_ctx->needed = 1; - dec_ctx->codepoint = x & 0x1f; - DUK_ASSERT(dec_ctx->lower == 0x80); - DUK_ASSERT(dec_ctx->upper == 0xbf); - return DUK__CP_CONTINUE; - } else if (x >= 0xe0 && x <= 0xef) { - /* U+0800-U+FFFF, 3 bytes */ - if (x == 0xe0) { - dec_ctx->lower = 0xa0; - DUK_ASSERT(dec_ctx->upper == 0xbf); - } else if (x == 0xed) { - DUK_ASSERT(dec_ctx->lower == 0x80); - dec_ctx->upper = 0x9f; - } - dec_ctx->needed = 2; - dec_ctx->codepoint = x & 0x0f; - return DUK__CP_CONTINUE; - } else if (x >= 0xf0 && x <= 0xf4) { - /* U+010000-U+10FFFF, 4 bytes */ - if (x == 0xf0) { - dec_ctx->lower = 0x90; - DUK_ASSERT(dec_ctx->upper == 0xbf); - } else if (x == 0xf4) { - DUK_ASSERT(dec_ctx->lower == 0x80); - dec_ctx->upper = 0x8f; - } - dec_ctx->needed = 3; - dec_ctx->codepoint = x & 0x07; - return DUK__CP_CONTINUE; - } else { - /* not a legal initial byte */ - return DUK__CP_ERROR; - } - } else { - /* process continuation byte */ - if (x >= dec_ctx->lower && x <= dec_ctx->upper) { - dec_ctx->lower = 0x80; - dec_ctx->upper = 0xbf; - dec_ctx->codepoint = (dec_ctx->codepoint << 6) | (x & 0x3f); - if (--dec_ctx->needed > 0) { - /* need more bytes */ - return DUK__CP_CONTINUE; - } else { - /* got a codepoint */ - duk_codepoint_t ret; - DUK_ASSERT(dec_ctx->codepoint <= 0x10ffffL); /* Decoding rules guarantee. */ - ret = dec_ctx->codepoint; - dec_ctx->codepoint = 0x0000L; - dec_ctx->needed = 0; - return ret; - } - } else { - /* We just encountered an illegal UTF-8 continuation byte. This might - * be the initial byte of the next character; if we return a plain - * error status and the decoder is in replacement mode, the character - * will be masked. We still need to alert the caller to the error - * though. - */ - dec_ctx->codepoint = 0x0000L; - dec_ctx->needed = 0; - dec_ctx->lower = 0x80; - dec_ctx->upper = 0xbf; - return DUK__CP_RETRY; - } - } -} - -#if defined(DUK_USE_ENCODING_BUILTINS) -DUK_LOCAL void duk__utf8_encode_char(void *udata, duk_codepoint_t codepoint) { - duk__encode_context *enc_ctx; - - DUK_ASSERT(codepoint >= 0); - enc_ctx = (duk__encode_context *) udata; - DUK_ASSERT(enc_ctx != NULL); - -#if !defined(DUK_USE_PREFER_SIZE) - if (codepoint <= 0x7f && enc_ctx->lead == 0x0000L) { - /* Fast path for ASCII. */ - *enc_ctx->out++ = (duk_uint8_t) codepoint; - return; - } -#endif - - if (DUK_UNLIKELY(codepoint > 0x10ffffL)) { - /* cannot legally encode in UTF-8 */ - codepoint = DUK_UNICODE_CP_REPLACEMENT_CHARACTER; - } else if (codepoint >= 0xd800L && codepoint <= 0xdfffL) { - if (codepoint <= 0xdbffL) { - /* high surrogate */ - duk_codepoint_t prev_lead = enc_ctx->lead; - enc_ctx->lead = codepoint; - if (prev_lead == 0x0000L) { - /* high surrogate, no output */ - return; - } else { - /* consecutive high surrogates, consider first one unpaired */ - codepoint = DUK_UNICODE_CP_REPLACEMENT_CHARACTER; - } - } else { - /* low surrogate */ - if (enc_ctx->lead != 0x0000L) { - codepoint = - (duk_codepoint_t) (0x010000L + ((enc_ctx->lead - 0xd800L) << 10) + (codepoint - 0xdc00L)); - enc_ctx->lead = 0x0000L; - } else { - /* unpaired low surrogate */ - DUK_ASSERT(enc_ctx->lead == 0x0000L); - codepoint = DUK_UNICODE_CP_REPLACEMENT_CHARACTER; - } - } - } else { - if (enc_ctx->lead != 0x0000L) { - /* unpaired high surrogate: emit replacement character and the input codepoint */ - enc_ctx->lead = 0x0000L; - enc_ctx->out = duk__utf8_emit_repl(enc_ctx->out); - } - } - - /* Codepoint may be original input, a decoded surrogate pair, or may - * have been replaced with U+FFFD. - */ - enc_ctx->out += duk_unicode_encode_xutf8((duk_ucodepoint_t) codepoint, enc_ctx->out); -} -#endif /* DUK_USE_ENCODING_BUILTINS */ - -/* Shared helper for buffer-to-string using a TextDecoder() compatible UTF-8 - * decoder. - */ -DUK_LOCAL duk_ret_t duk__decode_helper(duk_hthread *thr, duk__decode_context *dec_ctx) { - const duk_uint8_t *input; - duk_size_t len = 0; - duk_size_t len_tmp; - duk_bool_t stream = 0; - duk_codepoint_t codepoint; - duk_uint8_t *output; - const duk_uint8_t *in; - duk_uint8_t *out; - - DUK_ASSERT(dec_ctx != NULL); - - /* Careful with input buffer pointer: any side effects involving - * code execution (e.g. getters, coercion calls, and finalizers) - * may cause a resize and invalidate a pointer we've read. This - * is why the pointer is actually looked up at the last minute. - * Argument validation must still happen first to match WHATWG - * required side effect order. - */ - - if (duk_is_undefined(thr, 0)) { - duk_push_fixed_buffer_nozero(thr, 0); - duk_replace(thr, 0); - } - (void) duk_require_buffer_data(thr, 0, &len); /* Need 'len', avoid pointer. */ - - if (duk_check_type_mask(thr, 1, DUK_TYPE_MASK_UNDEFINED | DUK_TYPE_MASK_NULL | DUK_TYPE_MASK_NONE)) { - /* Use defaults, treat missing value like undefined. */ - } else { - duk_require_type_mask(thr, - 1, - DUK_TYPE_MASK_UNDEFINED | DUK_TYPE_MASK_NULL | DUK_TYPE_MASK_LIGHTFUNC | - DUK_TYPE_MASK_BUFFER | DUK_TYPE_MASK_OBJECT); - if (duk_get_prop_literal(thr, 1, "stream")) { - stream = duk_to_boolean(thr, -1); - } - } - - /* Allowance is 3*len in the general case because all bytes may potentially - * become U+FFFD. If the first byte completes a non-BMP codepoint it will - * decode to a CESU-8 surrogate pair (6 bytes) so we allow 3 extra bytes to - * compensate: (1*3)+3 = 6. Non-BMP codepoints are safe otherwise because - * the 4->6 expansion is well under the 3x allowance. - * - * XXX: As with TextEncoder, need a better buffer allocation strategy here. - */ - if (len >= (DUK_HBUFFER_MAX_BYTELEN / 3) - 3) { - DUK_ERROR_TYPE(thr, DUK_STR_RESULT_TOO_LONG); - DUK_WO_NORETURN(return 0;); - } - output = - (duk_uint8_t *) duk_push_fixed_buffer_nozero(thr, 3 + (3 * len)); /* used parts will be always manually written over */ - - input = (const duk_uint8_t *) duk_get_buffer_data(thr, 0, &len_tmp); - DUK_ASSERT(input != NULL || len == 0); - if (DUK_UNLIKELY(len != len_tmp)) { - /* Very unlikely but possible: source buffer was resized by - * a side effect when fixed buffer was pushed. Output buffer - * may not be large enough to hold output, so just fail if - * length has changed. - */ - DUK_D(DUK_DPRINT("input buffer resized by side effect, fail")); - goto fail_type; - } - - /* From this point onwards it's critical that no side effect occur - * which may disturb 'input': finalizer execution, property accesses, - * active coercions, etc. Even an allocation related mark-and-sweep - * may affect the pointer because it may trigger a pending finalizer. - */ - - in = input; - out = output; - while (in < input + len) { - codepoint = duk__utf8_decode_next(dec_ctx, *in++); - if (codepoint < 0) { - if (codepoint == DUK__CP_CONTINUE) { - continue; - } - - /* Decoding error with or without retry. */ - DUK_ASSERT(codepoint == DUK__CP_ERROR || codepoint == DUK__CP_RETRY); - if (codepoint == DUK__CP_RETRY) { - --in; /* retry last byte */ - } - /* replacement mode: replace with U+FFFD */ - codepoint = DUK_UNICODE_CP_REPLACEMENT_CHARACTER; - if (dec_ctx->fatal) { - /* fatal mode: throw a TypeError */ - goto fail_type; - } - /* Continue with 'codepoint', Unicode replacement. */ - } - DUK_ASSERT(codepoint >= 0x0000L && codepoint <= 0x10ffffL); - - if (!dec_ctx->bom_handled) { - dec_ctx->bom_handled = 1; - if (codepoint == 0xfeffL && !dec_ctx->ignore_bom) { - continue; - } - } - - out += duk_unicode_encode_cesu8((duk_ucodepoint_t) codepoint, out); - DUK_ASSERT(out <= output + (3 + (3 * len))); - } - - if (!stream) { - if (dec_ctx->needed != 0) { - /* truncated sequence at end of buffer */ - if (dec_ctx->fatal) { - goto fail_type; - } else { - out += duk_unicode_encode_cesu8(DUK_UNICODE_CP_REPLACEMENT_CHARACTER, out); - DUK_ASSERT(out <= output + (3 + (3 * len))); - } - } - duk__utf8_decode_init(dec_ctx); /* Initialize decoding state for potential reuse. */ - } - - /* Output buffer is fixed and thus stable even if there had been - * side effects (which there shouldn't be). - */ - duk_push_lstring(thr, (const char *) output, (duk_size_t) (out - output)); - return 1; - -fail_type: - DUK_ERROR_TYPE(thr, DUK_STR_UTF8_DECODE_FAILED); - DUK_WO_NORETURN(return 0;); -} - -/* - * Built-in bindings - */ - -#if defined(DUK_USE_ENCODING_BUILTINS) -DUK_INTERNAL duk_ret_t duk_bi_textencoder_constructor(duk_hthread *thr) { - /* TextEncoder currently requires no persistent state, so the constructor - * does nothing on purpose. - */ - - duk_require_constructor_call(thr); - return 0; -} - -DUK_INTERNAL duk_ret_t duk_bi_textencoder_prototype_encoding_getter(duk_hthread *thr) { - duk_push_literal(thr, "utf-8"); - return 1; -} - -DUK_INTERNAL duk_ret_t duk_bi_textencoder_prototype_encode(duk_hthread *thr) { - duk__encode_context enc_ctx; - duk_size_t len; - duk_size_t final_len; - duk_uint8_t *output; - - DUK_ASSERT_TOP(thr, 1); - if (duk_is_undefined(thr, 0)) { - len = 0; - } else { - duk_hstring *h_input; - - h_input = duk_to_hstring(thr, 0); - DUK_ASSERT(h_input != NULL); - - len = (duk_size_t) DUK_HSTRING_GET_CHARLEN(h_input); - if (len >= DUK_HBUFFER_MAX_BYTELEN / 3) { - DUK_ERROR_TYPE(thr, DUK_STR_RESULT_TOO_LONG); - DUK_WO_NORETURN(return 0;); - } - } - - /* Allowance is 3*len because all bytes can potentially be replaced with - * U+FFFD -- which rather inconveniently encodes to 3 bytes in UTF-8. - * Rely on dynamic buffer data pointer stability: no other code has - * access to the data pointer. - * - * XXX: The buffer allocation strategy used here is rather inefficient. - * Maybe switch to a chunk-based strategy, or preprocess the string to - * figure out the space needed ahead of time? - */ - DUK_ASSERT(3 * len >= len); - output = (duk_uint8_t *) duk_push_dynamic_buffer(thr, 3 * len); - - if (len > 0) { - DUK_ASSERT(duk_is_string(thr, 0)); /* True if len > 0. */ - - /* XXX: duk_decode_string() is used to process the input - * string. For standard ECMAScript strings, represented - * internally as CESU-8, this is fine. However, behavior - * beyond CESU-8 is not very strict: codepoints using an - * extended form of UTF-8 are also accepted, and invalid - * codepoint sequences (which are allowed in Duktape strings) - * are not handled as well as they could (e.g. invalid - * continuation bytes may mask following codepoints). - * This is how ECMAScript code would also see such strings. - * Maybe replace duk_decode_string() with an explicit strict - * CESU-8 decoder here? - */ - enc_ctx.lead = 0x0000L; - enc_ctx.out = output; - duk_decode_string(thr, 0, duk__utf8_encode_char, (void *) &enc_ctx); - if (enc_ctx.lead != 0x0000L) { - /* unpaired high surrogate at end of string */ - enc_ctx.out = duk__utf8_emit_repl(enc_ctx.out); - DUK_ASSERT(enc_ctx.out <= output + (3 * len)); - } - - /* The output buffer is usually very much oversized, so shrink it to - * actually needed size. Pointer stability assumed up to this point. - */ - DUK_ASSERT_TOP(thr, 2); - DUK_ASSERT(output == (duk_uint8_t *) duk_get_buffer_data(thr, -1, NULL)); - - final_len = (duk_size_t) (enc_ctx.out - output); - duk_resize_buffer(thr, -1, final_len); - /* 'output' and 'enc_ctx.out' are potentially invalidated by the resize. */ - } else { - final_len = 0; - } - - /* Standard WHATWG output is a Uint8Array. Here the Uint8Array will - * be backed by a dynamic buffer which differs from e.g. Uint8Arrays - * created as 'new Uint8Array(N)'. ECMAScript code won't see the - * difference but C code will. When bufferobjects are not supported, - * returns a plain dynamic buffer. - */ -#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) - duk_push_buffer_object(thr, -1, 0, final_len, DUK_BUFOBJ_UINT8ARRAY); -#endif - return 1; -} - -DUK_INTERNAL duk_ret_t duk_bi_textdecoder_constructor(duk_hthread *thr) { - duk__decode_context *dec_ctx; - duk_bool_t fatal = 0; - duk_bool_t ignore_bom = 0; - - DUK_ASSERT_TOP(thr, 2); - duk_require_constructor_call(thr); - if (!duk_is_undefined(thr, 0)) { - /* XXX: For now ignore 'label' (encoding identifier). */ - duk_to_string(thr, 0); - } - if (!duk_is_null_or_undefined(thr, 1)) { - if (duk_get_prop_literal(thr, 1, "fatal")) { - fatal = duk_to_boolean(thr, -1); - } - if (duk_get_prop_literal(thr, 1, "ignoreBOM")) { - ignore_bom = duk_to_boolean(thr, -1); - } - } - - duk_push_this(thr); - - /* The decode context is not assumed to be zeroed; all fields are - * initialized explicitly. - */ - dec_ctx = (duk__decode_context *) duk_push_fixed_buffer(thr, sizeof(duk__decode_context)); - dec_ctx->fatal = (duk_uint8_t) fatal; - dec_ctx->ignore_bom = (duk_uint8_t) ignore_bom; - duk__utf8_decode_init(dec_ctx); /* Initializes remaining fields. */ - - duk_put_prop_literal(thr, -2, DUK_INTERNAL_SYMBOL("Context")); - return 0; -} - -/* Get TextDecoder context from 'this'; leaves garbage on stack. */ -DUK_LOCAL duk__decode_context *duk__get_textdecoder_context(duk_hthread *thr) { - duk__decode_context *dec_ctx; - duk_push_this(thr); - duk_get_prop_literal(thr, -1, DUK_INTERNAL_SYMBOL("Context")); - dec_ctx = (duk__decode_context *) duk_require_buffer(thr, -1, NULL); - DUK_ASSERT(dec_ctx != NULL); - return dec_ctx; -} - -DUK_INTERNAL duk_ret_t duk_bi_textdecoder_prototype_shared_getter(duk_hthread *thr) { - duk__decode_context *dec_ctx; - duk_int_t magic; - - dec_ctx = duk__get_textdecoder_context(thr); - magic = duk_get_current_magic(thr); - switch (magic) { - case 0: - /* Encoding is now fixed, so _Context lookup is only needed to - * validate the 'this' binding (TypeError if not TextDecoder-like). - */ - duk_push_literal(thr, "utf-8"); - break; - case 1: - duk_push_boolean(thr, dec_ctx->fatal); - break; - default: - duk_push_boolean(thr, dec_ctx->ignore_bom); - break; - } - - return 1; -} - -DUK_INTERNAL duk_ret_t duk_bi_textdecoder_prototype_decode(duk_hthread *thr) { - duk__decode_context *dec_ctx; - - dec_ctx = duk__get_textdecoder_context(thr); - return duk__decode_helper(thr, dec_ctx); -} -#endif /* DUK_USE_ENCODING_BUILTINS */ - -/* - * Internal helper for Node.js Buffer - */ - -/* Internal helper used for Node.js Buffer .toString(). Value stack convention - * is currently odd: it mimics TextDecoder .decode() so that argument must be at - * index 0, and decode options (not present for Buffer) at index 1. Return value - * is a Duktape/C function return value. - */ -DUK_INTERNAL duk_ret_t duk_textdecoder_decode_utf8_nodejs(duk_hthread *thr) { - duk__decode_context dec_ctx; - - dec_ctx.fatal = 0; /* use replacement chars */ - dec_ctx.ignore_bom = 1; /* ignore BOMs (matches Node.js Buffer .toString()) */ - duk__utf8_decode_init(&dec_ctx); - - return duk__decode_helper(thr, &dec_ctx); -} - -/* automatic undefs */ -#undef DUK__CP_CONTINUE -#undef DUK__CP_ERROR -#undef DUK__CP_RETRY -#line 1 "duk_bi_error.c" -/* - * Error built-ins - */ - -/* #include duk_internal.h -> already included */ - -DUK_INTERNAL duk_ret_t duk_bi_error_constructor_shared(duk_hthread *thr) { - /* Behavior for constructor and non-constructor call is - * the same except for augmenting the created error. When - * called as a constructor, the caller (duk_new()) will handle - * augmentation; when called as normal function, we need to do - * it here. - */ - - duk_small_int_t bidx_prototype = duk_get_current_magic(thr); - - /* same for both error and each subclass like TypeError */ - duk_uint_t flags_and_class = - DUK_HOBJECT_FLAG_EXTENSIBLE | DUK_HOBJECT_FLAG_FASTREFS | DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_ERROR); - - (void) duk_push_object_helper(thr, flags_and_class, bidx_prototype); - - /* If message is undefined, the own property 'message' is not set at - * all to save property space. An empty message is inherited anyway. - */ - if (!duk_is_undefined(thr, 0)) { - duk_to_string(thr, 0); - duk_dup_0(thr); /* [ message error message ] */ - duk_xdef_prop_stridx_short(thr, -2, DUK_STRIDX_MESSAGE, DUK_PROPDESC_FLAGS_WC); - } - - /* Augment the error if called as a normal function. __FILE__ and __LINE__ - * are not desirable in this case. - */ - -#if defined(DUK_USE_AUGMENT_ERROR_CREATE) - if (!duk_is_constructor_call(thr)) { - duk_err_augment_error_create(thr, thr, NULL, 0, DUK_AUGMENT_FLAG_NOBLAME_FILELINE); - } -#endif - - return 1; -} - -DUK_INTERNAL duk_ret_t duk_bi_error_prototype_to_string(duk_hthread *thr) { - /* XXX: optimize with more direct internal access */ - - duk_push_this(thr); - (void) duk_require_hobject_promote_mask(thr, -1, DUK_TYPE_MASK_LIGHTFUNC | DUK_TYPE_MASK_BUFFER); - - /* [ ... this ] */ - - duk_get_prop_stridx_short(thr, -1, DUK_STRIDX_NAME); - if (duk_is_undefined(thr, -1)) { - duk_pop(thr); - duk_push_literal(thr, "Error"); - } else { - duk_to_string(thr, -1); - } - - /* [ ... this name ] */ - - /* XXX: Are steps 6 and 7 in E5 Section 15.11.4.4 duplicated by - * accident or are they actually needed? The first ToString() - * could conceivably return 'undefined'. - */ - duk_get_prop_stridx_short(thr, -2, DUK_STRIDX_MESSAGE); - if (duk_is_undefined(thr, -1)) { - duk_pop(thr); - duk_push_hstring_empty(thr); - } else { - duk_to_string(thr, -1); - } - - /* [ ... this name message ] */ - - if (duk_get_length(thr, -2) == 0) { - /* name is empty -> return message */ - return 1; - } - if (duk_get_length(thr, -1) == 0) { - /* message is empty -> return name */ - duk_pop(thr); - return 1; - } - duk_push_literal(thr, ": "); - duk_insert(thr, -2); /* ... name ': ' message */ - duk_concat(thr, 3); - - return 1; -} - -#if defined(DUK_USE_TRACEBACKS) - -/* - * Traceback handling - * - * The unified helper decodes the traceback and produces various requested - * outputs. It should be optimized for size, and may leave garbage on stack, - * only the topmost return value matters. For instance, traceback separator - * and decoded strings are pushed even when looking for filename only. - * - * NOTE: although _Tracedata is an internal property, user code can currently - * write to the array (or replace it with something other than an array). - * The code below must tolerate arbitrary _Tracedata. It can throw errors - * etc, but cannot cause a segfault or memory unsafe behavior. - */ - -/* constants arbitrary, chosen for small loads */ -#define DUK__OUTPUT_TYPE_TRACEBACK (-1) -#define DUK__OUTPUT_TYPE_FILENAME 0 -#define DUK__OUTPUT_TYPE_LINENUMBER 1 - -DUK_LOCAL duk_ret_t duk__error_getter_helper(duk_hthread *thr, duk_small_int_t output_type) { - duk_idx_t idx_td; - duk_small_int_t i; /* traceback depth fits into 16 bits */ - duk_small_int_t t; /* stack type fits into 16 bits */ - duk_small_int_t count_func = 0; /* traceback depth ensures fits into 16 bits */ - const char *str_tailcall = " tailcall"; - const char *str_strict = " strict"; - const char *str_construct = " construct"; - const char *str_prevyield = " preventsyield"; - const char *str_directeval = " directeval"; - const char *str_empty = ""; - - DUK_ASSERT_TOP(thr, 0); /* fixed arg count */ - - duk_push_this(thr); - duk_xget_owndataprop_stridx_short(thr, -1, DUK_STRIDX_INT_TRACEDATA); - idx_td = duk_get_top_index(thr); - - duk_push_hstring_stridx(thr, DUK_STRIDX_NEWLINE_4SPACE); - duk_push_this(thr); - - /* [ ... this tracedata sep this ] */ - - /* XXX: skip null filename? */ - - if (duk_check_type(thr, idx_td, DUK_TYPE_OBJECT)) { - /* Current tracedata contains 2 entries per callstack entry. */ - for (i = 0;; i += 2) { - duk_int_t pc; - duk_uint_t line; - duk_uint_t flags; - duk_double_t d; - const char *funcname; - const char *filename; - duk_hobject *h_func; - duk_hstring *h_name; - - duk_require_stack(thr, 5); - duk_get_prop_index(thr, idx_td, (duk_uarridx_t) i); - duk_get_prop_index(thr, idx_td, (duk_uarridx_t) (i + 1)); - d = duk_to_number_m1(thr); - pc = duk_double_to_int_t(DUK_FMOD(d, DUK_DOUBLE_2TO32)); - flags = duk_double_to_uint_t(DUK_FLOOR(d / DUK_DOUBLE_2TO32)); - t = (duk_small_int_t) duk_get_type(thr, -2); - - if (t == DUK_TYPE_OBJECT || t == DUK_TYPE_LIGHTFUNC) { - /* - * ECMAScript/native function call or lightfunc call - */ - - count_func++; - - /* [ ... v1(func) v2(pc+flags) ] */ - - /* These may be systematically omitted by Duktape - * with certain config options, but allow user to - * set them on a case-by-case basis. - */ - duk_get_prop_stridx_short(thr, -2, DUK_STRIDX_NAME); - duk_get_prop_stridx_short(thr, -3, DUK_STRIDX_FILE_NAME); - -#if defined(DUK_USE_PC2LINE) - line = (duk_uint_t) duk_hobject_pc2line_query(thr, -4, (duk_uint_fast32_t) pc); -#else - line = 0; -#endif - - /* [ ... v1 v2 name filename ] */ - - /* When looking for .fileName/.lineNumber, blame first - * function which has a .fileName. - */ - if (duk_is_string_notsymbol(thr, -1)) { - if (output_type == DUK__OUTPUT_TYPE_FILENAME) { - return 1; - } else if (output_type == DUK__OUTPUT_TYPE_LINENUMBER) { - duk_push_uint(thr, line); - return 1; - } - } - - /* XXX: Change 'anon' handling here too, to use empty string for anonymous functions? */ - /* XXX: Could be improved by coercing to a readable duk_tval (especially string escaping) */ - h_name = duk_get_hstring_notsymbol(thr, -2); /* may be NULL */ - funcname = (h_name == NULL || h_name == DUK_HTHREAD_STRING_EMPTY_STRING(thr)) ? - "[anon]" : - (const char *) DUK_HSTRING_GET_DATA(h_name); - filename = duk_get_string_notsymbol(thr, -1); - filename = filename ? filename : ""; - DUK_ASSERT(funcname != NULL); - DUK_ASSERT(filename != NULL); - - h_func = duk_get_hobject(thr, -4); /* NULL for lightfunc */ - - if (h_func == NULL) { - duk_push_sprintf( - thr, - "at %s light%s%s%s%s%s", - (const char *) funcname, - (const char *) ((flags & DUK_ACT_FLAG_STRICT) ? str_strict : str_empty), - (const char *) ((flags & DUK_ACT_FLAG_TAILCALLED) ? str_tailcall : str_empty), - (const char *) ((flags & DUK_ACT_FLAG_CONSTRUCT) ? str_construct : str_empty), - (const char *) ((flags & DUK_ACT_FLAG_DIRECT_EVAL) ? str_directeval : str_empty), - (const char *) ((flags & DUK_ACT_FLAG_PREVENT_YIELD) ? str_prevyield : str_empty)); - } else if (DUK_HOBJECT_HAS_NATFUNC(h_func)) { - duk_push_sprintf( - thr, - "at %s (%s) native%s%s%s%s%s", - (const char *) funcname, - (const char *) filename, - (const char *) ((flags & DUK_ACT_FLAG_STRICT) ? str_strict : str_empty), - (const char *) ((flags & DUK_ACT_FLAG_TAILCALLED) ? str_tailcall : str_empty), - (const char *) ((flags & DUK_ACT_FLAG_CONSTRUCT) ? str_construct : str_empty), - (const char *) ((flags & DUK_ACT_FLAG_DIRECT_EVAL) ? str_directeval : str_empty), - (const char *) ((flags & DUK_ACT_FLAG_PREVENT_YIELD) ? str_prevyield : str_empty)); - } else { - duk_push_sprintf( - thr, - "at %s (%s:%lu)%s%s%s%s%s", - (const char *) funcname, - (const char *) filename, - (unsigned long) line, - (const char *) ((flags & DUK_ACT_FLAG_STRICT) ? str_strict : str_empty), - (const char *) ((flags & DUK_ACT_FLAG_TAILCALLED) ? str_tailcall : str_empty), - (const char *) ((flags & DUK_ACT_FLAG_CONSTRUCT) ? str_construct : str_empty), - (const char *) ((flags & DUK_ACT_FLAG_DIRECT_EVAL) ? str_directeval : str_empty), - (const char *) ((flags & DUK_ACT_FLAG_PREVENT_YIELD) ? str_prevyield : str_empty)); - } - duk_replace(thr, -5); /* [ ... v1 v2 name filename str ] -> [ ... str v2 name filename ] */ - duk_pop_3(thr); /* -> [ ... str ] */ - } else if (t == DUK_TYPE_STRING) { - const char *str_file; - - /* - * __FILE__ / __LINE__ entry, here 'pc' is line number directly. - * Sometimes __FILE__ / __LINE__ is reported as the source for - * the error (fileName, lineNumber), sometimes not. - */ - - /* [ ... v1(filename) v2(line+flags) ] */ - - /* When looking for .fileName/.lineNumber, blame compilation - * or C call site unless flagged not to do so. - */ - if (!(flags & DUK_TB_FLAG_NOBLAME_FILELINE)) { - if (output_type == DUK__OUTPUT_TYPE_FILENAME) { - duk_pop(thr); - return 1; - } else if (output_type == DUK__OUTPUT_TYPE_LINENUMBER) { - duk_push_int(thr, pc); - return 1; - } - } - - /* Tracedata is trusted but avoid any risk of using a NULL - * for %s format because it has undefined behavior. Symbols - * don't need to be explicitly rejected as they pose no memory - * safety issues. - */ - str_file = (const char *) duk_get_string(thr, -2); - duk_push_sprintf(thr, - "at [anon] (%s:%ld) internal", - (const char *) (str_file ? str_file : "null"), - (long) pc); - duk_replace(thr, -3); /* [ ... v1 v2 str ] -> [ ... str v2 ] */ - duk_pop(thr); /* -> [ ... str ] */ - } else { - /* unknown, ignore */ - duk_pop_2(thr); - break; - } - } - - if (count_func >= DUK_USE_TRACEBACK_DEPTH) { - /* Possibly truncated; there is no explicit truncation - * marker so this is the best we can do. - */ - - duk_push_hstring_stridx(thr, DUK_STRIDX_BRACKETED_ELLIPSIS); - } - } - - /* [ ... this tracedata sep this str1 ... strN ] */ - - if (output_type != DUK__OUTPUT_TYPE_TRACEBACK) { - return 0; - } else { - /* The 'this' after 'sep' will get ToString() coerced by - * duk_join() automatically. We don't want to do that - * coercion when providing .fileName or .lineNumber (GH-254). - */ - duk_join(thr, duk_get_top(thr) - (idx_td + 2) /*count, not including sep*/); - return 1; - } -} - -/* XXX: Output type could be encoded into native function 'magic' value to - * save space. For setters the stridx could be encoded into 'magic'. - */ - -DUK_INTERNAL duk_ret_t duk_bi_error_prototype_stack_getter(duk_hthread *thr) { - return duk__error_getter_helper(thr, DUK__OUTPUT_TYPE_TRACEBACK); -} - -DUK_INTERNAL duk_ret_t duk_bi_error_prototype_filename_getter(duk_hthread *thr) { - return duk__error_getter_helper(thr, DUK__OUTPUT_TYPE_FILENAME); -} - -DUK_INTERNAL duk_ret_t duk_bi_error_prototype_linenumber_getter(duk_hthread *thr) { - return duk__error_getter_helper(thr, DUK__OUTPUT_TYPE_LINENUMBER); -} - -#else /* DUK_USE_TRACEBACKS */ - -/* - * Traceback handling when tracebacks disabled. - * - * The fileName / lineNumber stubs are now necessary because built-in - * data will include the accessor properties in Error.prototype. If those - * are removed for builds without tracebacks, these can also be removed. - * 'stack' should still be present and produce a ToString() equivalent: - * this is useful for user code which prints a stacktrace and expects to - * see something useful. A normal stacktrace also begins with a ToString() - * of the error so this makes sense. - */ - -DUK_INTERNAL duk_ret_t duk_bi_error_prototype_stack_getter(duk_hthread *thr) { - /* XXX: remove this native function and map 'stack' accessor - * to the toString() implementation directly. - */ - return duk_bi_error_prototype_to_string(thr); -} - -DUK_INTERNAL duk_ret_t duk_bi_error_prototype_filename_getter(duk_hthread *thr) { - DUK_UNREF(thr); - return 0; -} - -DUK_INTERNAL duk_ret_t duk_bi_error_prototype_linenumber_getter(duk_hthread *thr) { - DUK_UNREF(thr); - return 0; -} - -#endif /* DUK_USE_TRACEBACKS */ - -DUK_LOCAL duk_ret_t duk__error_setter_helper(duk_hthread *thr, duk_small_uint_t stridx_key) { - /* Attempt to write 'stack', 'fileName', 'lineNumber' works as if - * user code called Object.defineProperty() to create an overriding - * own property. This allows user code to overwrite .fileName etc - * intuitively as e.g. "err.fileName = 'dummy'" as one might expect. - * See https://github.com/svaarala/duktape/issues/387. - */ - - DUK_ASSERT_TOP(thr, 1); /* fixed arg count: value */ - - duk_push_this(thr); - duk_push_hstring_stridx(thr, stridx_key); - duk_dup_0(thr); - - /* [ ... obj key value ] */ - - DUK_DD(DUK_DDPRINT("error setter: %!T %!T %!T", duk_get_tval(thr, -3), duk_get_tval(thr, -2), duk_get_tval(thr, -1))); - - duk_def_prop(thr, - -3, - DUK_DEFPROP_HAVE_VALUE | DUK_DEFPROP_HAVE_WRITABLE | DUK_DEFPROP_WRITABLE | - DUK_DEFPROP_HAVE_ENUMERABLE | /*not enumerable*/ - DUK_DEFPROP_HAVE_CONFIGURABLE | DUK_DEFPROP_CONFIGURABLE); - return 0; -} - -DUK_INTERNAL duk_ret_t duk_bi_error_prototype_stack_setter(duk_hthread *thr) { - return duk__error_setter_helper(thr, DUK_STRIDX_STACK); -} - -DUK_INTERNAL duk_ret_t duk_bi_error_prototype_filename_setter(duk_hthread *thr) { - return duk__error_setter_helper(thr, DUK_STRIDX_FILE_NAME); -} - -DUK_INTERNAL duk_ret_t duk_bi_error_prototype_linenumber_setter(duk_hthread *thr) { - return duk__error_setter_helper(thr, DUK_STRIDX_LINE_NUMBER); -} - -/* automatic undefs */ -#undef DUK__OUTPUT_TYPE_FILENAME -#undef DUK__OUTPUT_TYPE_LINENUMBER -#undef DUK__OUTPUT_TYPE_TRACEBACK -#line 1 "duk_bi_function.c" -/* - * Function built-ins - */ - -/* #include duk_internal.h -> already included */ - -/* Needed even when Function built-in is disabled. */ -DUK_INTERNAL duk_ret_t duk_bi_function_prototype(duk_hthread *thr) { - /* ignore arguments, return undefined (E5 Section 15.3.4) */ - DUK_UNREF(thr); - return 0; -} - -#if defined(DUK_USE_FUNCTION_BUILTIN) -DUK_INTERNAL duk_ret_t duk_bi_function_constructor(duk_hthread *thr) { - duk_hstring *h_sourcecode; - duk_idx_t nargs; - duk_idx_t i; - duk_small_uint_t comp_flags; - duk_hcompfunc *func; - duk_hobject *outer_lex_env; - duk_hobject *outer_var_env; - - /* normal and constructor calls have identical semantics */ - - nargs = duk_get_top(thr); - for (i = 0; i < nargs; i++) { - duk_to_string(thr, i); /* Rejects Symbols during coercion. */ - } - - if (nargs == 0) { - duk_push_hstring_empty(thr); - duk_push_hstring_empty(thr); - } else if (nargs == 1) { - /* XXX: cover this with the generic >1 case? */ - duk_push_hstring_empty(thr); - } else { - duk_insert(thr, 0); /* [ arg1 ... argN-1 body] -> [body arg1 ... argN-1] */ - duk_push_literal(thr, ","); - duk_insert(thr, 1); - duk_join(thr, nargs - 1); - } - - /* [ body formals ], formals is comma separated list that needs to be parsed */ - - DUK_ASSERT_TOP(thr, 2); - - /* XXX: this placeholder is not always correct, but use for now. - * It will fail in corner cases; see test-dev-func-cons-args.js. - */ - duk_push_literal(thr, "function("); - duk_dup_1(thr); - duk_push_literal(thr, "){"); - duk_dup_0(thr); - duk_push_literal(thr, "\n}"); /* Newline is important to handle trailing // comment. */ - duk_concat(thr, 5); - - /* [ body formals source ] */ - - DUK_ASSERT_TOP(thr, 3); - - /* strictness is not inherited, intentional */ - comp_flags = DUK_COMPILE_FUNCEXPR; - - duk_push_hstring_stridx(thr, DUK_STRIDX_COMPILE); /* XXX: copy from caller? */ /* XXX: ignored now */ - h_sourcecode = duk_require_hstring(thr, -2); /* no symbol check needed; -2 is concat'd code */ - duk_js_compile(thr, - (const duk_uint8_t *) DUK_HSTRING_GET_DATA(h_sourcecode), - (duk_size_t) DUK_HSTRING_GET_BYTELEN(h_sourcecode), - comp_flags); - - /* Force .name to 'anonymous' (ES2015). */ - duk_push_literal(thr, "anonymous"); - duk_xdef_prop_stridx_short(thr, -2, DUK_STRIDX_NAME, DUK_PROPDESC_FLAGS_C); - - func = (duk_hcompfunc *) duk_known_hobject(thr, -1); - DUK_ASSERT(DUK_HOBJECT_IS_COMPFUNC((duk_hobject *) func)); - DUK_ASSERT(DUK_HOBJECT_HAS_CONSTRUCTABLE((duk_hobject *) func)); - - /* [ body formals source template ] */ - - /* only outer_lex_env matters, as functions always get a new - * variable declaration environment. - */ - - outer_lex_env = thr->builtins[DUK_BIDX_GLOBAL_ENV]; - outer_var_env = thr->builtins[DUK_BIDX_GLOBAL_ENV]; - - duk_js_push_closure(thr, func, outer_var_env, outer_lex_env, 1 /*add_auto_proto*/); - - /* [ body formals source template closure ] */ - - return 1; -} -#endif /* DUK_USE_FUNCTION_BUILTIN */ - -#if defined(DUK_USE_FUNCTION_BUILTIN) -DUK_INTERNAL duk_ret_t duk_bi_function_prototype_to_string(duk_hthread *thr) { - duk_tval *tv; - - /* - * E5 Section 15.3.4.2 places few requirements on the output of - * this function: the result is implementation dependent, must - * follow FunctionDeclaration syntax (in particular, must have a - * name even for anonymous functions or functions with empty name). - * The output does NOT need to compile into anything useful. - * - * E6 Section 19.2.3.5 changes the requirements completely: the - * result must either eval() to a functionally equivalent object - * OR eval() to a SyntaxError. - * - * We opt for the SyntaxError approach for now, with a syntax that - * mimics V8's native function syntax: - * - * 'function cos() { [native code] }' - * - * but extended with [ecmascript code], [bound code], and - * [lightfunc code]. - */ - - duk_push_this(thr); - tv = DUK_GET_TVAL_NEGIDX(thr, -1); - DUK_ASSERT(tv != NULL); - - if (DUK_TVAL_IS_OBJECT(tv)) { - duk_hobject *obj = DUK_TVAL_GET_OBJECT(tv); - const char *func_name; - - /* Function name: missing/undefined is mapped to empty string, - * otherwise coerce to string. No handling for invalid identifier - * characters or e.g. '{' in the function name. This doesn't - * really matter as long as a SyntaxError results. Technically - * if the name contained a suitable prefix followed by '//' it - * might cause the result to parse without error. - */ - duk_get_prop_stridx_short(thr, -1, DUK_STRIDX_NAME); - if (duk_is_undefined(thr, -1)) { - func_name = ""; - } else { - func_name = duk_to_string(thr, -1); - DUK_ASSERT(func_name != NULL); - } - - if (DUK_HOBJECT_IS_COMPFUNC(obj)) { - duk_push_sprintf(thr, "function %s() { [ecmascript code] }", (const char *) func_name); - } else if (DUK_HOBJECT_IS_NATFUNC(obj)) { - duk_push_sprintf(thr, "function %s() { [native code] }", (const char *) func_name); - } else if (DUK_HOBJECT_IS_BOUNDFUNC(obj)) { - duk_push_sprintf(thr, "function %s() { [bound code] }", (const char *) func_name); - } else { - goto type_error; - } - } else if (DUK_TVAL_IS_LIGHTFUNC(tv)) { - duk_push_lightfunc_tostring(thr, tv); - } else { - goto type_error; - } - - return 1; - -type_error: - DUK_DCERROR_TYPE_INVALID_ARGS(thr); -} -#endif - -/* Always present because the native function pointer is needed in call - * handling. - */ -DUK_INTERNAL duk_ret_t duk_bi_function_prototype_call(duk_hthread *thr) { - /* .call() is dealt with in call handling by simulating its - * effects so this function is actually never called. - */ - DUK_UNREF(thr); - return DUK_RET_TYPE_ERROR; -} - -DUK_INTERNAL duk_ret_t duk_bi_function_prototype_apply(duk_hthread *thr) { - /* Like .call(), never actually called. */ - DUK_UNREF(thr); - return DUK_RET_TYPE_ERROR; -} - -DUK_INTERNAL duk_ret_t duk_bi_reflect_apply(duk_hthread *thr) { - /* Like .call(), never actually called. */ - DUK_UNREF(thr); - return DUK_RET_TYPE_ERROR; -} - -DUK_INTERNAL duk_ret_t duk_bi_reflect_construct(duk_hthread *thr) { - /* Like .call(), never actually called. */ - DUK_UNREF(thr); - return DUK_RET_TYPE_ERROR; -} - -#if defined(DUK_USE_FUNCTION_BUILTIN) -/* Create a bound function which points to a target function which may - * be bound or non-bound. If the target is bound, the argument lists - * and 'this' binding of the functions are merged and the resulting - * function points directly to the non-bound target. - */ -DUK_INTERNAL duk_ret_t duk_bi_function_prototype_bind(duk_hthread *thr) { - duk_hboundfunc *h_bound; - duk_idx_t nargs; /* bound args, not counting 'this' binding */ - duk_idx_t bound_nargs; - duk_int_t bound_len; - duk_tval *tv_prevbound; - duk_idx_t n_prevbound; - duk_tval *tv_res; - duk_tval *tv_tmp; - - /* XXX: C API call, e.g. duk_push_bound_function(thr, target_idx, nargs); */ - - /* Vararg function, careful arg handling, e.g. thisArg may not - * be present. - */ - nargs = duk_get_top(thr) - 1; /* actual args, not counting 'this' binding */ - if (nargs < 0) { - nargs++; - duk_push_undefined(thr); - } - DUK_ASSERT(nargs >= 0); - - /* Limit 'nargs' for bound functions to guarantee arithmetic - * below will never wrap. - */ - if (nargs > (duk_idx_t) DUK_HBOUNDFUNC_MAX_ARGS) { - DUK_DCERROR_RANGE_INVALID_COUNT(thr); - } - - duk_push_this(thr); - duk_require_callable(thr, -1); - - /* [ thisArg arg1 ... argN func ] (thisArg+args == nargs+1 total) */ - DUK_ASSERT_TOP(thr, nargs + 2); - - /* Create bound function object. */ - h_bound = duk_push_hboundfunc(thr); - DUK_ASSERT(DUK_TVAL_IS_UNDEFINED(&h_bound->target)); - DUK_ASSERT(DUK_TVAL_IS_UNDEFINED(&h_bound->this_binding)); - DUK_ASSERT(h_bound->args == NULL); - DUK_ASSERT(h_bound->nargs == 0); - DUK_ASSERT(DUK_HOBJECT_GET_PROTOTYPE(thr->heap, (duk_hobject *) h_bound) == NULL); - - /* [ thisArg arg1 ... argN func boundFunc ] */ - - /* If the target is a bound function, argument lists must be - * merged. The 'this' binding closest to the target function - * wins because in call handling the 'this' gets replaced over - * and over again until we call the non-bound function. - */ - tv_prevbound = NULL; - n_prevbound = 0; - tv_tmp = DUK_GET_TVAL_POSIDX(thr, 0); - DUK_TVAL_SET_TVAL(&h_bound->this_binding, tv_tmp); - tv_tmp = DUK_GET_TVAL_NEGIDX(thr, -2); - DUK_TVAL_SET_TVAL(&h_bound->target, tv_tmp); - - if (DUK_TVAL_IS_OBJECT(tv_tmp)) { - duk_hobject *h_target; - duk_hobject *bound_proto; - - h_target = DUK_TVAL_GET_OBJECT(tv_tmp); - DUK_ASSERT(DUK_HOBJECT_IS_CALLABLE(h_target)); - - /* Internal prototype must be copied from the target. - * For lightfuncs Function.prototype is used and is already - * in place. - */ - bound_proto = DUK_HOBJECT_GET_PROTOTYPE(thr->heap, h_target); - DUK_HOBJECT_SET_PROTOTYPE_INIT_INCREF(thr, (duk_hobject *) h_bound, bound_proto); - - /* The 'strict' flag is copied to get the special [[Get]] of E5.1 - * Section 15.3.5.4 to apply when a 'caller' value is a strict bound - * function. Not sure if this is correct, because the specification - * is a bit ambiguous on this point but it would make sense. - */ - /* Strictness is inherited from target. */ - if (DUK_HOBJECT_HAS_STRICT(h_target)) { - DUK_HOBJECT_SET_STRICT((duk_hobject *) h_bound); - } - - if (DUK_HOBJECT_HAS_BOUNDFUNC(h_target)) { - duk_hboundfunc *h_boundtarget; - - h_boundtarget = (duk_hboundfunc *) (void *) h_target; - - /* The final function should always be non-bound, unless - * there's a bug in the internals. Assert for it. - */ - DUK_ASSERT(DUK_TVAL_IS_LIGHTFUNC(&h_boundtarget->target) || - (DUK_TVAL_IS_OBJECT(&h_boundtarget->target) && - DUK_HOBJECT_IS_CALLABLE(DUK_TVAL_GET_OBJECT(&h_boundtarget->target)) && - !DUK_HOBJECT_IS_BOUNDFUNC(DUK_TVAL_GET_OBJECT(&h_boundtarget->target)))); - - DUK_TVAL_SET_TVAL(&h_bound->target, &h_boundtarget->target); - DUK_TVAL_SET_TVAL(&h_bound->this_binding, &h_boundtarget->this_binding); - - tv_prevbound = h_boundtarget->args; - n_prevbound = h_boundtarget->nargs; - } - } else { - /* Lightfuncs are always strict. */ - duk_hobject *bound_proto; - - DUK_ASSERT(DUK_TVAL_IS_LIGHTFUNC(tv_tmp)); - DUK_HOBJECT_SET_STRICT((duk_hobject *) h_bound); - bound_proto = thr->builtins[DUK_BIDX_FUNCTION_PROTOTYPE]; - DUK_HOBJECT_SET_PROTOTYPE_INIT_INCREF(thr, (duk_hobject *) h_bound, bound_proto); - } - - DUK_TVAL_INCREF(thr, &h_bound->target); /* old values undefined, no decref needed */ - DUK_TVAL_INCREF(thr, &h_bound->this_binding); - - bound_nargs = n_prevbound + nargs; - if (bound_nargs > (duk_idx_t) DUK_HBOUNDFUNC_MAX_ARGS) { - DUK_DCERROR_RANGE_INVALID_COUNT(thr); - } - tv_res = (duk_tval *) DUK_ALLOC_CHECKED(thr, ((duk_size_t) bound_nargs) * sizeof(duk_tval)); - DUK_ASSERT(tv_res != NULL || bound_nargs == 0); - DUK_ASSERT(h_bound->args == NULL); - DUK_ASSERT(h_bound->nargs == 0); - h_bound->args = tv_res; - h_bound->nargs = bound_nargs; - - DUK_ASSERT(n_prevbound >= 0); - duk_copy_tvals_incref(thr, tv_res, tv_prevbound, (duk_size_t) n_prevbound); - DUK_ASSERT(nargs >= 0); - duk_copy_tvals_incref(thr, tv_res + n_prevbound, DUK_GET_TVAL_POSIDX(thr, 1), (duk_size_t) nargs); - - /* [ thisArg arg1 ... argN func boundFunc ] */ - - /* Bound function 'length' property is interesting. - * For lightfuncs, simply read the virtual property. - */ - duk_get_prop_stridx_short(thr, -2, DUK_STRIDX_LENGTH); - bound_len = duk_get_int(thr, -1); /* ES2015: no coercion */ - if (bound_len < nargs) { - bound_len = 0; - } else { - bound_len -= nargs; - } - if (sizeof(duk_int_t) > 4 && bound_len > (duk_int_t) DUK_UINT32_MAX) { - bound_len = (duk_int_t) DUK_UINT32_MAX; - } - duk_pop(thr); - DUK_ASSERT(bound_len >= 0); - tv_tmp = thr->valstack_top++; - DUK_ASSERT(DUK_TVAL_IS_UNDEFINED(tv_tmp)); - DUK_ASSERT(!DUK_TVAL_NEEDS_REFCOUNT_UPDATE(tv_tmp)); - DUK_TVAL_SET_U32(tv_tmp, (duk_uint32_t) bound_len); /* in-place update, fastint */ - duk_xdef_prop_stridx_short(thr, -2, DUK_STRIDX_LENGTH, DUK_PROPDESC_FLAGS_C); /* attrs in E6 Section 9.2.4 */ - - /* XXX: could these be virtual? */ - /* Caller and arguments must use the same thrower, [[ThrowTypeError]]. */ - duk_xdef_prop_stridx_thrower(thr, -1, DUK_STRIDX_CALLER); - duk_xdef_prop_stridx_thrower(thr, -1, DUK_STRIDX_LC_ARGUMENTS); - - /* Function name and fileName (non-standard). */ - duk_push_literal(thr, "bound "); /* ES2015 19.2.3.2. */ - duk_get_prop_stridx(thr, -3, DUK_STRIDX_NAME); - if (!duk_is_string_notsymbol(thr, -1)) { - /* ES2015 has requirement to check that .name of target is a string - * (also must check for Symbol); if not, targetName should be the - * empty string. ES2015 19.2.3.2. - */ - duk_pop(thr); - duk_push_hstring_empty(thr); - } - duk_concat(thr, 2); - duk_xdef_prop_stridx_short(thr, -2, DUK_STRIDX_NAME, DUK_PROPDESC_FLAGS_C); -#if defined(DUK_USE_FUNC_FILENAME_PROPERTY) - duk_get_prop_stridx_short(thr, -2, DUK_STRIDX_FILE_NAME); - duk_xdef_prop_stridx_short(thr, -2, DUK_STRIDX_FILE_NAME, DUK_PROPDESC_FLAGS_C); -#endif - - DUK_DDD(DUK_DDDPRINT("created bound function: %!iT", (duk_tval *) duk_get_tval(thr, -1))); - - return 1; -} -#endif /* DUK_USE_FUNCTION_BUILTIN */ - -/* %NativeFunctionPrototype% .length getter. */ -DUK_INTERNAL duk_ret_t duk_bi_native_function_length(duk_hthread *thr) { - duk_tval *tv; - duk_hnatfunc *h; - duk_int16_t func_nargs; - - tv = duk_get_borrowed_this_tval(thr); - DUK_ASSERT(tv != NULL); - - if (DUK_TVAL_IS_OBJECT(tv)) { - h = (duk_hnatfunc *) DUK_TVAL_GET_OBJECT(tv); - DUK_ASSERT(h != NULL); - if (!DUK_HOBJECT_IS_NATFUNC((duk_hobject *) h)) { - goto fail_type; - } - func_nargs = h->nargs; - duk_push_int(thr, func_nargs == DUK_HNATFUNC_NARGS_VARARGS ? 0 : func_nargs); - } else if (DUK_TVAL_IS_LIGHTFUNC(tv)) { - duk_small_uint_t lf_flags; - duk_small_uint_t lf_len; - - lf_flags = DUK_TVAL_GET_LIGHTFUNC_FLAGS(tv); - lf_len = DUK_LFUNC_FLAGS_GET_LENGTH(lf_flags); - duk_push_uint(thr, lf_len); - } else { - goto fail_type; - } - return 1; - -fail_type: - DUK_DCERROR_TYPE_INVALID_ARGS(thr); -} - -/* %NativeFunctionPrototype% .name getter. */ -DUK_INTERNAL duk_ret_t duk_bi_native_function_name(duk_hthread *thr) { - duk_tval *tv; - duk_hnatfunc *h; - - tv = duk_get_borrowed_this_tval(thr); - DUK_ASSERT(tv != NULL); - - if (DUK_TVAL_IS_OBJECT(tv)) { - h = (duk_hnatfunc *) DUK_TVAL_GET_OBJECT(tv); - DUK_ASSERT(h != NULL); - if (!DUK_HOBJECT_IS_NATFUNC((duk_hobject *) h)) { - goto fail_type; - } -#if 0 - duk_push_hnatfunc_name(thr, h); -#endif - duk_push_hstring_empty(thr); - } else if (DUK_TVAL_IS_LIGHTFUNC(tv)) { - duk_push_lightfunc_name(thr, tv); - } else { - goto fail_type; - } - return 1; - -fail_type: - DUK_DCERROR_TYPE_INVALID_ARGS(thr); -} - -#if defined(DUK_USE_SYMBOL_BUILTIN) -DUK_INTERNAL duk_ret_t duk_bi_function_prototype_hasinstance(duk_hthread *thr) { - /* This binding: RHS, stack index 0: LHS. */ - duk_bool_t ret; - - ret = duk_js_instanceof_ordinary(thr, DUK_GET_TVAL_POSIDX(thr, 0), DUK_GET_THIS_TVAL_PTR(thr)); - duk_push_boolean(thr, ret); - return 1; -} -#endif /* DUK_USE_SYMBOL_BUILTIN */ -#line 1 "duk_bi_global.c" -/* - * Global object built-ins - */ - -/* #include duk_internal.h -> already included */ - -/* - * Encoding/decoding helpers - */ - -/* XXX: Could add fast path (for each transform callback) with direct byte - * lookups (no shifting) and no explicit check for x < 0x80 before table - * lookup. - */ - -/* Macros for creating and checking bitmasks for character encoding. - * Bit number is a bit counterintuitive, but minimizes code size. - */ -#define DUK__MKBITS(a, b, c, d, e, f, g, h) \ - ((duk_uint8_t) (((a) << 0) | ((b) << 1) | ((c) << 2) | ((d) << 3) | ((e) << 4) | ((f) << 5) | ((g) << 6) | ((h) << 7))) -#define DUK__CHECK_BITMASK(table, cp) ((table)[(cp) >> 3] & (1 << ((cp) &0x07))) - -/* E5.1 Section 15.1.3.3: uriReserved + uriUnescaped + '#' */ -DUK_LOCAL const duk_uint8_t duk__encode_uriunescaped_table[16] = { - DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), /* 0x00-0x0f */ - DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), /* 0x10-0x1f */ - DUK__MKBITS(0, 1, 0, 1, 1, 0, 1, 1), DUK__MKBITS(1, 1, 1, 1, 1, 1, 1, 1), /* 0x20-0x2f */ - DUK__MKBITS(1, 1, 1, 1, 1, 1, 1, 1), DUK__MKBITS(1, 1, 1, 1, 0, 1, 0, 1), /* 0x30-0x3f */ - DUK__MKBITS(1, 1, 1, 1, 1, 1, 1, 1), DUK__MKBITS(1, 1, 1, 1, 1, 1, 1, 1), /* 0x40-0x4f */ - DUK__MKBITS(1, 1, 1, 1, 1, 1, 1, 1), DUK__MKBITS(1, 1, 1, 0, 0, 0, 0, 1), /* 0x50-0x5f */ - DUK__MKBITS(0, 1, 1, 1, 1, 1, 1, 1), DUK__MKBITS(1, 1, 1, 1, 1, 1, 1, 1), /* 0x60-0x6f */ - DUK__MKBITS(1, 1, 1, 1, 1, 1, 1, 1), DUK__MKBITS(1, 1, 1, 0, 0, 0, 1, 0), /* 0x70-0x7f */ -}; - -/* E5.1 Section 15.1.3.4: uriUnescaped */ -DUK_LOCAL const duk_uint8_t duk__encode_uricomponent_unescaped_table[16] = { - DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), /* 0x00-0x0f */ - DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), /* 0x10-0x1f */ - DUK__MKBITS(0, 1, 0, 0, 0, 0, 0, 1), DUK__MKBITS(1, 1, 1, 0, 0, 1, 1, 0), /* 0x20-0x2f */ - DUK__MKBITS(1, 1, 1, 1, 1, 1, 1, 1), DUK__MKBITS(1, 1, 0, 0, 0, 0, 0, 0), /* 0x30-0x3f */ - DUK__MKBITS(0, 1, 1, 1, 1, 1, 1, 1), DUK__MKBITS(1, 1, 1, 1, 1, 1, 1, 1), /* 0x40-0x4f */ - DUK__MKBITS(1, 1, 1, 1, 1, 1, 1, 1), DUK__MKBITS(1, 1, 1, 0, 0, 0, 0, 1), /* 0x50-0x5f */ - DUK__MKBITS(0, 1, 1, 1, 1, 1, 1, 1), DUK__MKBITS(1, 1, 1, 1, 1, 1, 1, 1), /* 0x60-0x6f */ - DUK__MKBITS(1, 1, 1, 1, 1, 1, 1, 1), DUK__MKBITS(1, 1, 1, 0, 0, 0, 1, 0), /* 0x70-0x7f */ -}; - -/* E5.1 Section 15.1.3.1: uriReserved + '#' */ -DUK_LOCAL const duk_uint8_t duk__decode_uri_reserved_table[16] = { - DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), /* 0x00-0x0f */ - DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), /* 0x10-0x1f */ - DUK__MKBITS(0, 0, 0, 1, 1, 0, 1, 0), DUK__MKBITS(0, 0, 0, 1, 1, 0, 0, 1), /* 0x20-0x2f */ - DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), DUK__MKBITS(0, 0, 1, 1, 0, 1, 0, 1), /* 0x30-0x3f */ - DUK__MKBITS(1, 0, 0, 0, 0, 0, 0, 0), DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), /* 0x40-0x4f */ - DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), /* 0x50-0x5f */ - DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), /* 0x60-0x6f */ - DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), /* 0x70-0x7f */ -}; - -/* E5.1 Section 15.1.3.2: empty */ -DUK_LOCAL const duk_uint8_t duk__decode_uri_component_reserved_table[16] = { - DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), /* 0x00-0x0f */ - DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), /* 0x10-0x1f */ - DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), /* 0x20-0x2f */ - DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), /* 0x30-0x3f */ - DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), /* 0x40-0x4f */ - DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), /* 0x50-0x5f */ - DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), /* 0x60-0x6f */ - DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), /* 0x70-0x7f */ -}; - -#if defined(DUK_USE_SECTION_B) -/* E5.1 Section B.2.2, step 7. */ -DUK_LOCAL const duk_uint8_t duk__escape_unescaped_table[16] = { - DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), /* 0x00-0x0f */ - DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), /* 0x10-0x1f */ - DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), DUK__MKBITS(0, 0, 1, 1, 0, 1, 1, 1), /* 0x20-0x2f */ - DUK__MKBITS(1, 1, 1, 1, 1, 1, 1, 1), DUK__MKBITS(1, 1, 0, 0, 0, 0, 0, 0), /* 0x30-0x3f */ - DUK__MKBITS(1, 1, 1, 1, 1, 1, 1, 1), DUK__MKBITS(1, 1, 1, 1, 1, 1, 1, 1), /* 0x40-0x4f */ - DUK__MKBITS(1, 1, 1, 1, 1, 1, 1, 1), DUK__MKBITS(1, 1, 1, 0, 0, 0, 0, 1), /* 0x50-0x5f */ - DUK__MKBITS(0, 1, 1, 1, 1, 1, 1, 1), DUK__MKBITS(1, 1, 1, 1, 1, 1, 1, 1), /* 0x60-0x6f */ - DUK__MKBITS(1, 1, 1, 1, 1, 1, 1, 1), DUK__MKBITS(1, 1, 1, 0, 0, 0, 0, 0) /* 0x70-0x7f */ -}; -#endif /* DUK_USE_SECTION_B */ - -typedef struct { - duk_hthread *thr; - duk_hstring *h_str; - duk_bufwriter_ctx bw; - const duk_uint8_t *p; - const duk_uint8_t *p_start; - const duk_uint8_t *p_end; -} duk__transform_context; - -typedef void (*duk__transform_callback)(duk__transform_context *tfm_ctx, const void *udata, duk_codepoint_t cp); - -/* XXX: refactor and share with other code */ -DUK_LOCAL duk_small_int_t duk__decode_hex_escape(const duk_uint8_t *p, duk_small_int_t n) { - duk_small_int_t ch; - duk_small_int_t t = 0; - - while (n > 0) { - t = t * 16; - ch = (duk_small_int_t) duk_hex_dectab[*p++]; - if (DUK_LIKELY(ch >= 0)) { - t += ch; - } else { - return -1; - } - n--; - } - return t; -} - -DUK_LOCAL int duk__transform_helper(duk_hthread *thr, duk__transform_callback callback, const void *udata) { - duk__transform_context tfm_ctx_alloc; - duk__transform_context *tfm_ctx = &tfm_ctx_alloc; - duk_codepoint_t cp; - - tfm_ctx->thr = thr; - - tfm_ctx->h_str = duk_to_hstring(thr, 0); - DUK_ASSERT(tfm_ctx->h_str != NULL); - - DUK_BW_INIT_PUSHBUF(thr, &tfm_ctx->bw, DUK_HSTRING_GET_BYTELEN(tfm_ctx->h_str)); /* initial size guess */ - - tfm_ctx->p_start = DUK_HSTRING_GET_DATA(tfm_ctx->h_str); - tfm_ctx->p_end = tfm_ctx->p_start + DUK_HSTRING_GET_BYTELEN(tfm_ctx->h_str); - tfm_ctx->p = tfm_ctx->p_start; - - while (tfm_ctx->p < tfm_ctx->p_end) { - cp = (duk_codepoint_t) duk_unicode_decode_xutf8_checked(thr, &tfm_ctx->p, tfm_ctx->p_start, tfm_ctx->p_end); - callback(tfm_ctx, udata, cp); - } - - DUK_BW_COMPACT(thr, &tfm_ctx->bw); - - (void) duk_buffer_to_string(thr, -1); /* Safe if transform is safe. */ - return 1; -} - -DUK_LOCAL void duk__transform_callback_encode_uri(duk__transform_context *tfm_ctx, const void *udata, duk_codepoint_t cp) { - duk_uint8_t xutf8_buf[DUK_UNICODE_MAX_XUTF8_LENGTH]; - duk_small_int_t len; - duk_codepoint_t cp1, cp2; - duk_small_int_t i, t; - const duk_uint8_t *unescaped_table = (const duk_uint8_t *) udata; - - /* UTF-8 encoded bytes escaped as %xx%xx%xx... -> 3 * nbytes. - * Codepoint range is restricted so this is a slightly too large - * but doesn't matter. - */ - DUK_BW_ENSURE(tfm_ctx->thr, &tfm_ctx->bw, 3 * DUK_UNICODE_MAX_XUTF8_LENGTH); - - if (cp < 0) { - goto uri_error; - } else if ((cp < 0x80L) && DUK__CHECK_BITMASK(unescaped_table, cp)) { - DUK_BW_WRITE_RAW_U8(tfm_ctx->thr, &tfm_ctx->bw, (duk_uint8_t) cp); - return; - } else if (cp >= 0xdc00L && cp <= 0xdfffL) { - goto uri_error; - } else if (cp >= 0xd800L && cp <= 0xdbffL) { - /* Needs lookahead */ - if (duk_unicode_decode_xutf8(tfm_ctx->thr, - &tfm_ctx->p, - tfm_ctx->p_start, - tfm_ctx->p_end, - (duk_ucodepoint_t *) &cp2) == 0) { - goto uri_error; - } - if (!(cp2 >= 0xdc00L && cp2 <= 0xdfffL)) { - goto uri_error; - } - cp1 = cp; - cp = (duk_codepoint_t) (((cp1 - 0xd800L) << 10) + (cp2 - 0xdc00L) + 0x10000L); - } else if (cp > 0x10ffffL) { - /* Although we can allow non-BMP characters (they'll decode - * back into surrogate pairs), we don't allow extended UTF-8 - * characters; they would encode to URIs which won't decode - * back because of strict UTF-8 checks in URI decoding. - * (However, we could just as well allow them here.) - */ - goto uri_error; - } else { - /* Non-BMP characters within valid UTF-8 range: encode as is. - * They'll decode back into surrogate pairs if the escaped - * output is decoded. - */ - ; - } - - len = duk_unicode_encode_xutf8((duk_ucodepoint_t) cp, xutf8_buf); - for (i = 0; i < len; i++) { - t = (duk_small_int_t) xutf8_buf[i]; - DUK_BW_WRITE_RAW_U8_3(tfm_ctx->thr, - &tfm_ctx->bw, - DUK_ASC_PERCENT, - (duk_uint8_t) duk_uc_nybbles[t >> 4], - (duk_uint8_t) duk_uc_nybbles[t & 0x0f]); - } - - return; - -uri_error: - DUK_ERROR_URI(tfm_ctx->thr, DUK_STR_INVALID_INPUT); - DUK_WO_NORETURN(return;); -} - -DUK_LOCAL void duk__transform_callback_decode_uri(duk__transform_context *tfm_ctx, const void *udata, duk_codepoint_t cp) { - const duk_uint8_t *reserved_table = (const duk_uint8_t *) udata; - duk_small_uint_t utf8_blen; - duk_codepoint_t min_cp; - duk_small_int_t t; /* must be signed */ - duk_small_uint_t i; - - /* Maximum write size: XUTF8 path writes max DUK_UNICODE_MAX_XUTF8_LENGTH, - * percent escape path writes max two times CESU-8 encoded BMP length. - */ - DUK_BW_ENSURE(tfm_ctx->thr, - &tfm_ctx->bw, - (DUK_UNICODE_MAX_XUTF8_LENGTH >= 2 * DUK_UNICODE_MAX_CESU8_BMP_LENGTH ? DUK_UNICODE_MAX_XUTF8_LENGTH : - DUK_UNICODE_MAX_CESU8_BMP_LENGTH)); - - if (cp == (duk_codepoint_t) '%') { - const duk_uint8_t *p = tfm_ctx->p; - duk_size_t left = (duk_size_t) (tfm_ctx->p_end - p); /* bytes left */ - - DUK_DDD(DUK_DDDPRINT("percent encoding, left=%ld", (long) left)); - - if (left < 2) { - goto uri_error; - } - - t = duk__decode_hex_escape(p, 2); - DUK_DDD(DUK_DDDPRINT("first byte: %ld", (long) t)); - if (t < 0) { - goto uri_error; - } - - if (t < 0x80) { - if (DUK__CHECK_BITMASK(reserved_table, t)) { - /* decode '%xx' to '%xx' if decoded char in reserved set */ - DUK_ASSERT(tfm_ctx->p - 1 >= tfm_ctx->p_start); - DUK_BW_WRITE_RAW_U8_3(tfm_ctx->thr, &tfm_ctx->bw, DUK_ASC_PERCENT, p[0], p[1]); - } else { - DUK_BW_WRITE_RAW_U8(tfm_ctx->thr, &tfm_ctx->bw, (duk_uint8_t) t); - } - tfm_ctx->p += 2; - return; - } - - /* Decode UTF-8 codepoint from a sequence of hex escapes. The - * first byte of the sequence has been decoded to 't'. - * - * Note that UTF-8 validation must be strict according to the - * specification: E5.1 Section 15.1.3, decode algorithm step - * 4.d.vii.8. URIError from non-shortest encodings is also - * specifically noted in the spec. - */ - - DUK_ASSERT(t >= 0x80); - if (t < 0xc0) { - /* continuation byte */ - goto uri_error; - } else if (t < 0xe0) { - /* 110x xxxx; 2 bytes */ - utf8_blen = 2; - min_cp = 0x80L; - cp = t & 0x1f; - } else if (t < 0xf0) { - /* 1110 xxxx; 3 bytes */ - utf8_blen = 3; - min_cp = 0x800L; - cp = t & 0x0f; - } else if (t < 0xf8) { - /* 1111 0xxx; 4 bytes */ - utf8_blen = 4; - min_cp = 0x10000L; - cp = t & 0x07; - } else { - /* extended utf-8 not allowed for URIs */ - goto uri_error; - } - - if (left < utf8_blen * 3 - 1) { - /* '%xx%xx...%xx', p points to char after first '%' */ - goto uri_error; - } - - p += 3; - for (i = 1; i < utf8_blen; i++) { - /* p points to digit part ('%xy', p points to 'x') */ - t = duk__decode_hex_escape(p, 2); - DUK_DDD(DUK_DDDPRINT("i=%ld utf8_blen=%ld cp=%ld t=0x%02lx", - (long) i, - (long) utf8_blen, - (long) cp, - (unsigned long) t)); - if (t < 0) { - goto uri_error; - } - if ((t & 0xc0) != 0x80) { - goto uri_error; - } - cp = (cp << 6) + (t & 0x3f); - p += 3; - } - p--; /* p overshoots */ - tfm_ctx->p = p; - - DUK_DDD(DUK_DDDPRINT("final cp=%ld, min_cp=%ld", (long) cp, (long) min_cp)); - - if (cp < min_cp || cp > 0x10ffffL || (cp >= 0xd800L && cp <= 0xdfffL)) { - goto uri_error; - } - - /* The E5.1 algorithm checks whether or not a decoded codepoint - * is below 0x80 and perhaps may be in the "reserved" set. - * This seems pointless because the single byte UTF-8 case is - * handled separately, and non-shortest encodings are rejected. - * So, 'cp' cannot be below 0x80 here, and thus cannot be in - * the reserved set. - */ - - /* utf-8 validation ensures these */ - DUK_ASSERT(cp >= 0x80L && cp <= 0x10ffffL); - - if (cp >= 0x10000L) { - cp -= 0x10000L; - DUK_ASSERT(cp < 0x100000L); - - DUK_BW_WRITE_RAW_XUTF8(tfm_ctx->thr, &tfm_ctx->bw, ((cp >> 10) + 0xd800L)); - DUK_BW_WRITE_RAW_XUTF8(tfm_ctx->thr, &tfm_ctx->bw, ((cp & 0x03ffL) + 0xdc00L)); - } else { - DUK_BW_WRITE_RAW_XUTF8(tfm_ctx->thr, &tfm_ctx->bw, cp); - } - } else { - DUK_BW_WRITE_RAW_XUTF8(tfm_ctx->thr, &tfm_ctx->bw, cp); - } - return; - -uri_error: - DUK_ERROR_URI(tfm_ctx->thr, DUK_STR_INVALID_INPUT); - DUK_WO_NORETURN(return;); -} - -#if defined(DUK_USE_SECTION_B) -DUK_LOCAL void duk__transform_callback_escape(duk__transform_context *tfm_ctx, const void *udata, duk_codepoint_t cp) { - DUK_UNREF(udata); - - DUK_BW_ENSURE(tfm_ctx->thr, &tfm_ctx->bw, 6); - - if (cp < 0) { - goto esc_error; - } else if ((cp < 0x80L) && DUK__CHECK_BITMASK(duk__escape_unescaped_table, cp)) { - DUK_BW_WRITE_RAW_U8(tfm_ctx->thr, &tfm_ctx->bw, (duk_uint8_t) cp); - } else if (cp < 0x100L) { - DUK_BW_WRITE_RAW_U8_3(tfm_ctx->thr, - &tfm_ctx->bw, - (duk_uint8_t) DUK_ASC_PERCENT, - (duk_uint8_t) duk_uc_nybbles[cp >> 4], - (duk_uint8_t) duk_uc_nybbles[cp & 0x0f]); - } else if (cp < 0x10000L) { - DUK_BW_WRITE_RAW_U8_6(tfm_ctx->thr, - &tfm_ctx->bw, - (duk_uint8_t) DUK_ASC_PERCENT, - (duk_uint8_t) DUK_ASC_LC_U, - (duk_uint8_t) duk_uc_nybbles[cp >> 12], - (duk_uint8_t) duk_uc_nybbles[(cp >> 8) & 0x0f], - (duk_uint8_t) duk_uc_nybbles[(cp >> 4) & 0x0f], - (duk_uint8_t) duk_uc_nybbles[cp & 0x0f]); - } else { - /* Characters outside BMP cannot be escape()'d. We could - * encode them as surrogate pairs (for codepoints inside - * valid UTF-8 range, but not extended UTF-8). Because - * escape() and unescape() are legacy functions, we don't. - */ - goto esc_error; - } - - return; - -esc_error: - DUK_ERROR_TYPE(tfm_ctx->thr, DUK_STR_INVALID_INPUT); - DUK_WO_NORETURN(return;); -} - -DUK_LOCAL void duk__transform_callback_unescape(duk__transform_context *tfm_ctx, const void *udata, duk_codepoint_t cp) { - duk_small_int_t t; - - DUK_UNREF(udata); - - if (cp == (duk_codepoint_t) '%') { - const duk_uint8_t *p = tfm_ctx->p; - duk_size_t left = (duk_size_t) (tfm_ctx->p_end - p); /* bytes left */ - - if (left >= 5 && p[0] == 'u' && ((t = duk__decode_hex_escape(p + 1, 4)) >= 0)) { - cp = (duk_codepoint_t) t; - tfm_ctx->p += 5; - } else if (left >= 2 && ((t = duk__decode_hex_escape(p, 2)) >= 0)) { - cp = (duk_codepoint_t) t; - tfm_ctx->p += 2; - } - } - - DUK_BW_WRITE_ENSURE_XUTF8(tfm_ctx->thr, &tfm_ctx->bw, cp); -} -#endif /* DUK_USE_SECTION_B */ - -/* - * Eval - * - * Eval needs to handle both a "direct eval" and an "indirect eval". - * Direct eval handling needs access to the caller's activation so that its - * lexical environment can be accessed. A direct eval is only possible from - * ECMAScript code; an indirect eval call is possible also from C code. - * When an indirect eval call is made from C code, there may not be a - * calling activation at all which needs careful handling. - */ - -DUK_INTERNAL duk_ret_t duk_bi_global_object_eval(duk_hthread *thr) { - duk_hstring *h; - duk_activation *act_caller; - duk_activation *act_eval; - duk_hcompfunc *func; - duk_hobject *outer_lex_env; - duk_hobject *outer_var_env; - duk_bool_t this_to_global = 1; - duk_small_uint_t comp_flags; - duk_int_t level = -2; - duk_small_uint_t call_flags; - - DUK_ASSERT(duk_get_top(thr) == 1 || duk_get_top(thr) == 2); /* 2 when called by debugger */ - DUK_ASSERT(thr->callstack_top >= 1); /* at least this function exists */ - DUK_ASSERT(thr->callstack_curr != NULL); - DUK_ASSERT((thr->callstack_curr->flags & DUK_ACT_FLAG_DIRECT_EVAL) == 0 || /* indirect eval */ - (thr->callstack_top >= 2)); /* if direct eval, calling activation must exist */ - - /* - * callstack_top - 1 --> this function - * callstack_top - 2 --> caller (may not exist) - * - * If called directly from C, callstack_top might be 1. If calling - * activation doesn't exist, call must be indirect. - */ - - h = duk_get_hstring_notsymbol(thr, 0); - if (!h) { - /* Symbol must be returned as is, like any non-string values. */ - return 1; /* return arg as-is */ - } - -#if defined(DUK_USE_DEBUGGER_SUPPORT) - /* NOTE: level is used only by the debugger and should never be present - * for an ECMAScript eval(). - */ - DUK_ASSERT(level == -2); /* by default, use caller's environment */ - if (duk_get_top(thr) >= 2 && duk_is_number(thr, 1)) { - level = duk_get_int(thr, 1); - } - DUK_ASSERT(level <= -2); /* This is guaranteed by debugger code. */ -#endif - - /* [ source ] */ - - comp_flags = DUK_COMPILE_EVAL; - act_eval = thr->callstack_curr; /* this function */ - DUK_ASSERT(act_eval != NULL); - act_caller = duk_hthread_get_activation_for_level(thr, level); - if (act_caller != NULL) { - /* Have a calling activation, check for direct eval (otherwise - * assume indirect eval. - */ - if ((act_caller->flags & DUK_ACT_FLAG_STRICT) && (act_eval->flags & DUK_ACT_FLAG_DIRECT_EVAL)) { - /* Only direct eval inherits strictness from calling code - * (E5.1 Section 10.1.1). - */ - comp_flags |= DUK_COMPILE_STRICT; - } - } else { - DUK_ASSERT((act_eval->flags & DUK_ACT_FLAG_DIRECT_EVAL) == 0); - } - - duk_push_hstring_stridx(thr, DUK_STRIDX_INPUT); /* XXX: copy from caller? */ - duk_js_compile(thr, (const duk_uint8_t *) DUK_HSTRING_GET_DATA(h), (duk_size_t) DUK_HSTRING_GET_BYTELEN(h), comp_flags); - func = (duk_hcompfunc *) duk_known_hobject(thr, -1); - DUK_ASSERT(DUK_HOBJECT_IS_COMPFUNC((duk_hobject *) func)); - - /* [ source template ] */ - - /* E5 Section 10.4.2 */ - - if (act_eval->flags & DUK_ACT_FLAG_DIRECT_EVAL) { - DUK_ASSERT(thr->callstack_top >= 2); - DUK_ASSERT(act_caller != NULL); - if (act_caller->lex_env == NULL) { - DUK_ASSERT(act_caller->var_env == NULL); - DUK_DDD(DUK_DDDPRINT("delayed environment initialization")); - - /* this may have side effects, so re-lookup act */ - duk_js_init_activation_environment_records_delayed(thr, act_caller); - } - DUK_ASSERT(act_caller->lex_env != NULL); - DUK_ASSERT(act_caller->var_env != NULL); - - this_to_global = 0; - - if (DUK_HOBJECT_HAS_STRICT((duk_hobject *) func)) { - duk_hdecenv *new_env; - duk_hobject *act_lex_env; - - DUK_DDD(DUK_DDDPRINT("direct eval call to a strict function -> " - "var_env and lex_env to a fresh env, " - "this_binding to caller's this_binding")); - - act_lex_env = act_caller->lex_env; - - new_env = - duk_hdecenv_alloc(thr, - DUK_HOBJECT_FLAG_EXTENSIBLE | DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_DECENV)); - DUK_ASSERT(new_env != NULL); - duk_push_hobject(thr, (duk_hobject *) new_env); - - DUK_ASSERT(DUK_HOBJECT_GET_PROTOTYPE(thr->heap, (duk_hobject *) new_env) == NULL); - DUK_HOBJECT_SET_PROTOTYPE(thr->heap, (duk_hobject *) new_env, act_lex_env); - DUK_HOBJECT_INCREF_ALLOWNULL(thr, act_lex_env); - DUK_DDD(DUK_DDDPRINT("new_env allocated: %!iO", (duk_heaphdr *) new_env)); - - outer_lex_env = (duk_hobject *) new_env; - outer_var_env = (duk_hobject *) new_env; - - duk_insert(thr, 0); /* stash to bottom of value stack to keep new_env reachable for duration of eval */ - - /* compiler's responsibility */ - DUK_ASSERT(DUK_HOBJECT_HAS_NEWENV((duk_hobject *) func)); - } else { - DUK_DDD(DUK_DDDPRINT("direct eval call to a non-strict function -> " - "var_env and lex_env to caller's envs, " - "this_binding to caller's this_binding")); - - outer_lex_env = act_caller->lex_env; - outer_var_env = act_caller->var_env; - - /* compiler's responsibility */ - DUK_ASSERT(!DUK_HOBJECT_HAS_NEWENV((duk_hobject *) func)); - } - } else { - DUK_DDD(DUK_DDDPRINT("indirect eval call -> var_env and lex_env to " - "global object, this_binding to global object")); - - this_to_global = 1; - outer_lex_env = thr->builtins[DUK_BIDX_GLOBAL_ENV]; - outer_var_env = thr->builtins[DUK_BIDX_GLOBAL_ENV]; - } - - /* Eval code doesn't need an automatic .prototype object. */ - duk_js_push_closure(thr, func, outer_var_env, outer_lex_env, 0 /*add_auto_proto*/); - - /* [ env? source template closure ] */ - - if (this_to_global) { - DUK_ASSERT(thr->builtins[DUK_BIDX_GLOBAL] != NULL); - duk_push_hobject_bidx(thr, DUK_BIDX_GLOBAL); - } else { - duk_tval *tv; - DUK_ASSERT(thr->callstack_top >= 2); - DUK_ASSERT(act_caller != NULL); - tv = (duk_tval *) (void *) ((duk_uint8_t *) thr->valstack + act_caller->bottom_byteoff - - sizeof(duk_tval)); /* this is just beneath bottom */ - DUK_ASSERT(tv >= thr->valstack); - duk_push_tval(thr, tv); - } - - DUK_DDD(DUK_DDDPRINT("eval -> lex_env=%!iO, var_env=%!iO, this_binding=%!T", - (duk_heaphdr *) outer_lex_env, - (duk_heaphdr *) outer_var_env, - duk_get_tval(thr, -1))); - - /* [ env? source template closure this ] */ - - call_flags = 0; - if (act_eval->flags & DUK_ACT_FLAG_DIRECT_EVAL) { - /* Set DIRECT_EVAL flag for the call; it's not strictly - * needed for the 'inner' eval call (the eval body) but - * current new.target implementation expects to find it - * so it can traverse direct eval chains up to the real - * calling function. - */ - call_flags |= DUK_CALL_FLAG_DIRECT_EVAL; - } - duk_handle_call_unprotected_nargs(thr, 0, call_flags); - - /* [ env? source template result ] */ - - return 1; -} - -/* - * Parsing of ints and floats - */ - -#if defined(DUK_USE_GLOBAL_BUILTIN) -DUK_INTERNAL duk_ret_t duk_bi_global_object_parse_int(duk_hthread *thr) { - duk_int32_t radix; - duk_small_uint_t s2n_flags; - - DUK_ASSERT_TOP(thr, 2); - duk_to_string(thr, 0); /* Reject symbols. */ - - radix = duk_to_int32(thr, 1); - - /* While parseInt() recognizes 0xdeadbeef, it doesn't recognize - * ES2015 0o123 or 0b10001. - */ - s2n_flags = DUK_S2N_FLAG_TRIM_WHITE | DUK_S2N_FLAG_ALLOW_GARBAGE | DUK_S2N_FLAG_ALLOW_PLUS | DUK_S2N_FLAG_ALLOW_MINUS | - DUK_S2N_FLAG_ALLOW_LEADING_ZERO | DUK_S2N_FLAG_ALLOW_AUTO_HEX_INT; - - /* Specification stripPrefix maps to DUK_S2N_FLAG_ALLOW_AUTO_HEX_INT. - * - * Don't autodetect octals (from leading zeroes), require user code to - * provide an explicit radix 8 for parsing octal. See write-up from Mozilla: - * https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/parseInt#ECMAScript_5_Removes_Octal_Interpretation - */ - - if (radix != 0) { - if (radix < 2 || radix > 36) { - goto ret_nan; - } - if (radix != 16) { - s2n_flags &= ~DUK_S2N_FLAG_ALLOW_AUTO_HEX_INT; - } - } else { - radix = 10; - } - - duk_dup_0(thr); - duk_numconv_parse(thr, (duk_small_int_t) radix, s2n_flags); - return 1; - -ret_nan: - duk_push_nan(thr); - return 1; -} -#endif /* DUK_USE_GLOBAL_BUILTIN */ - -#if defined(DUK_USE_GLOBAL_BUILTIN) -DUK_INTERNAL duk_ret_t duk_bi_global_object_parse_float(duk_hthread *thr) { - duk_small_uint_t s2n_flags; - - DUK_ASSERT_TOP(thr, 1); - duk_to_string(thr, 0); /* Reject symbols. */ - - /* XXX: check flags */ - s2n_flags = DUK_S2N_FLAG_TRIM_WHITE | DUK_S2N_FLAG_ALLOW_EXP | DUK_S2N_FLAG_ALLOW_GARBAGE | DUK_S2N_FLAG_ALLOW_PLUS | - DUK_S2N_FLAG_ALLOW_MINUS | DUK_S2N_FLAG_ALLOW_INF | DUK_S2N_FLAG_ALLOW_FRAC | DUK_S2N_FLAG_ALLOW_NAKED_FRAC | - DUK_S2N_FLAG_ALLOW_EMPTY_FRAC | DUK_S2N_FLAG_ALLOW_LEADING_ZERO; - - duk_numconv_parse(thr, 10 /*radix*/, s2n_flags); - return 1; -} -#endif /* DUK_USE_GLOBAL_BUILTIN */ - -/* - * Number checkers - */ - -#if defined(DUK_USE_GLOBAL_BUILTIN) -DUK_INTERNAL duk_ret_t duk_bi_global_object_is_nan(duk_hthread *thr) { - duk_double_t d = duk_to_number(thr, 0); - duk_push_boolean(thr, (duk_bool_t) DUK_ISNAN(d)); - return 1; -} -#endif /* DUK_USE_GLOBAL_BUILTIN */ - -#if defined(DUK_USE_GLOBAL_BUILTIN) -DUK_INTERNAL duk_ret_t duk_bi_global_object_is_finite(duk_hthread *thr) { - duk_double_t d = duk_to_number(thr, 0); - duk_push_boolean(thr, (duk_bool_t) DUK_ISFINITE(d)); - return 1; -} -#endif /* DUK_USE_GLOBAL_BUILTIN */ - -/* - * URI handling - */ - -#if defined(DUK_USE_GLOBAL_BUILTIN) -DUK_INTERNAL duk_ret_t duk_bi_global_object_decode_uri(duk_hthread *thr) { - return duk__transform_helper(thr, duk__transform_callback_decode_uri, (const void *) duk__decode_uri_reserved_table); -} - -DUK_INTERNAL duk_ret_t duk_bi_global_object_decode_uri_component(duk_hthread *thr) { - return duk__transform_helper(thr, - duk__transform_callback_decode_uri, - (const void *) duk__decode_uri_component_reserved_table); -} - -DUK_INTERNAL duk_ret_t duk_bi_global_object_encode_uri(duk_hthread *thr) { - return duk__transform_helper(thr, duk__transform_callback_encode_uri, (const void *) duk__encode_uriunescaped_table); -} - -DUK_INTERNAL duk_ret_t duk_bi_global_object_encode_uri_component(duk_hthread *thr) { - return duk__transform_helper(thr, - duk__transform_callback_encode_uri, - (const void *) duk__encode_uricomponent_unescaped_table); -} - -#if defined(DUK_USE_SECTION_B) -DUK_INTERNAL duk_ret_t duk_bi_global_object_escape(duk_hthread *thr) { - return duk__transform_helper(thr, duk__transform_callback_escape, (const void *) NULL); -} - -DUK_INTERNAL duk_ret_t duk_bi_global_object_unescape(duk_hthread *thr) { - return duk__transform_helper(thr, duk__transform_callback_unescape, (const void *) NULL); -} -#endif /* DUK_USE_SECTION_B */ -#endif /* DUK_USE_GLOBAL_BUILTIN */ - -/* automatic undefs */ -#undef DUK__CHECK_BITMASK -#undef DUK__MKBITS -#line 1 "duk_bi_json.c" -/* - * JSON built-ins. - * - * See doc/json.rst. - * - * Codepoints are handled as duk_uint_fast32_t to ensure that the full - * unsigned 32-bit range is supported. This matters to e.g. JX. - * - * Input parsing doesn't do an explicit end-of-input check at all. This is - * safe: input string data is always NUL-terminated (0x00) and valid JSON - * inputs never contain plain NUL characters, so that as long as syntax checks - * are correct, we'll never read past the NUL. This approach reduces code size - * and improves parsing performance, but it's critical that syntax checks are - * indeed correct! - */ - -/* #include duk_internal.h -> already included */ - -#if defined(DUK_USE_JSON_SUPPORT) - -/* - * Local defines and forward declarations. - */ - -#define DUK__JSON_DECSTR_BUFSIZE 128 -#define DUK__JSON_DECSTR_CHUNKSIZE 64 -#define DUK__JSON_ENCSTR_CHUNKSIZE 64 -#define DUK__JSON_STRINGIFY_BUFSIZE 128 -#define DUK__JSON_MAX_ESC_LEN 10 /* '\Udeadbeef' */ - -DUK_LOCAL_DECL void duk__json_dec_syntax_error(duk_json_dec_ctx *js_ctx); -DUK_LOCAL_DECL void duk__json_dec_eat_white(duk_json_dec_ctx *js_ctx); -#if defined(DUK_USE_JX) -DUK_LOCAL_DECL duk_uint8_t duk__json_dec_peek(duk_json_dec_ctx *js_ctx); -#endif -DUK_LOCAL_DECL duk_uint8_t duk__json_dec_get(duk_json_dec_ctx *js_ctx); -DUK_LOCAL_DECL duk_uint8_t duk__json_dec_get_nonwhite(duk_json_dec_ctx *js_ctx); -DUK_LOCAL_DECL duk_uint_fast32_t duk__json_dec_decode_hex_escape(duk_json_dec_ctx *js_ctx, duk_small_uint_t n); -DUK_LOCAL_DECL void duk__json_dec_req_stridx(duk_json_dec_ctx *js_ctx, duk_small_uint_t stridx); -DUK_LOCAL_DECL void duk__json_dec_string(duk_json_dec_ctx *js_ctx); -#if defined(DUK_USE_JX) -DUK_LOCAL_DECL void duk__json_dec_plain_string(duk_json_dec_ctx *js_ctx); -DUK_LOCAL_DECL void duk__json_dec_pointer(duk_json_dec_ctx *js_ctx); -DUK_LOCAL_DECL void duk__json_dec_buffer(duk_json_dec_ctx *js_ctx); -#endif -DUK_LOCAL_DECL void duk__json_dec_number(duk_json_dec_ctx *js_ctx); -DUK_LOCAL_DECL void duk__json_dec_objarr_entry(duk_json_dec_ctx *js_ctx); -DUK_LOCAL_DECL void duk__json_dec_objarr_exit(duk_json_dec_ctx *js_ctx); -DUK_LOCAL_DECL void duk__json_dec_object(duk_json_dec_ctx *js_ctx); -DUK_LOCAL_DECL void duk__json_dec_array(duk_json_dec_ctx *js_ctx); -DUK_LOCAL_DECL void duk__json_dec_value(duk_json_dec_ctx *js_ctx); -DUK_LOCAL_DECL void duk__json_dec_reviver_walk(duk_json_dec_ctx *js_ctx); - -DUK_LOCAL_DECL void duk__emit_1(duk_json_enc_ctx *js_ctx, duk_uint_fast8_t ch); -DUK_LOCAL_DECL void duk__emit_2(duk_json_enc_ctx *js_ctx, duk_uint_fast8_t ch1, duk_uint_fast8_t ch2); -DUK_LOCAL_DECL void duk__unemit_1(duk_json_enc_ctx *js_ctx); -DUK_LOCAL_DECL void duk__emit_hstring(duk_json_enc_ctx *js_ctx, duk_hstring *h); -#if defined(DUK_USE_FASTINT) -DUK_LOCAL_DECL void duk__emit_cstring(duk_json_enc_ctx *js_ctx, const char *p); -#endif -DUK_LOCAL_DECL void duk__emit_stridx(duk_json_enc_ctx *js_ctx, duk_small_uint_t stridx); -DUK_LOCAL_DECL duk_uint8_t *duk__emit_esc_auto_fast(duk_json_enc_ctx *js_ctx, duk_uint_fast32_t cp, duk_uint8_t *q); -DUK_LOCAL_DECL void duk__json_enc_key_autoquote(duk_json_enc_ctx *js_ctx, duk_hstring *k); -DUK_LOCAL_DECL void duk__json_enc_quote_string(duk_json_enc_ctx *js_ctx, duk_hstring *h_str); -DUK_LOCAL_DECL void duk__json_enc_objarr_entry(duk_json_enc_ctx *js_ctx, duk_idx_t *entry_top); -DUK_LOCAL_DECL void duk__json_enc_objarr_exit(duk_json_enc_ctx *js_ctx, duk_idx_t *entry_top); -DUK_LOCAL_DECL void duk__json_enc_object(duk_json_enc_ctx *js_ctx); -DUK_LOCAL_DECL void duk__json_enc_array(duk_json_enc_ctx *js_ctx); -DUK_LOCAL_DECL duk_bool_t duk__json_enc_value(duk_json_enc_ctx *js_ctx, duk_idx_t idx_holder); -DUK_LOCAL_DECL duk_bool_t duk__json_enc_allow_into_proplist(duk_tval *tv); -DUK_LOCAL_DECL void duk__json_enc_double(duk_json_enc_ctx *js_ctx); -#if defined(DUK_USE_FASTINT) -DUK_LOCAL_DECL void duk__json_enc_fastint_tval(duk_json_enc_ctx *js_ctx, duk_tval *tv); -#endif -#if defined(DUK_USE_JX) || defined(DUK_USE_JC) -DUK_LOCAL_DECL void duk__json_enc_buffer_jx_jc(duk_json_enc_ctx *js_ctx, duk_hbuffer *h); -DUK_LOCAL_DECL void duk__json_enc_pointer(duk_json_enc_ctx *js_ctx, void *ptr); -#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) -DUK_LOCAL_DECL void duk__json_enc_bufobj(duk_json_enc_ctx *js_ctx, duk_hbufobj *h_bufobj); -#endif -#endif -#if defined(DUK_USE_JSON_STRINGIFY_FASTPATH) -DUK_LOCAL_DECL void duk__json_enc_buffer_json_fastpath(duk_json_enc_ctx *js_ctx, duk_hbuffer *h); -#endif -DUK_LOCAL_DECL void duk__json_enc_newline_indent(duk_json_enc_ctx *js_ctx, duk_uint_t depth); - -/* - * Helper tables - */ - -#if defined(DUK_USE_JSON_QUOTESTRING_FASTPATH) -DUK_LOCAL const duk_uint8_t duk__json_quotestr_lookup[256] = { - /* 0x00 ... 0x7f: as is - * 0x80: escape generically - * 0x81: slow path - * 0xa0 ... 0xff: backslash + one char - */ - - 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0xe2, 0xf4, 0xee, 0x80, 0xe6, 0xf2, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, - 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x20, 0x21, 0xa2, 0x23, 0x24, 0x25, 0x26, 0x27, - 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b, - 0x3c, 0x3d, 0x3e, 0x3f, 0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f, - 0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5a, 0x5b, 0xdc, 0x5d, 0x5e, 0x5f, 0x60, 0x61, 0x62, 0x63, - 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, - 0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, - 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, - 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, - 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, - 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, - 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, - 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81 -}; -#else /* DUK_USE_JSON_QUOTESTRING_FASTPATH */ -DUK_LOCAL const duk_uint8_t duk__json_quotestr_esc[14] = { DUK_ASC_NUL, DUK_ASC_NUL, DUK_ASC_NUL, DUK_ASC_NUL, DUK_ASC_NUL, - DUK_ASC_NUL, DUK_ASC_NUL, DUK_ASC_NUL, DUK_ASC_LC_B, DUK_ASC_LC_T, - DUK_ASC_LC_N, DUK_ASC_NUL, DUK_ASC_LC_F, DUK_ASC_LC_R }; -#endif /* DUK_USE_JSON_QUOTESTRING_FASTPATH */ - -#if defined(DUK_USE_JSON_DECSTRING_FASTPATH) -DUK_LOCAL const duk_uint8_t duk__json_decstr_lookup[256] = { - /* 0x00: slow path - * other: as is - */ - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x20, 0x21, 0x00, 0x23, 0x24, 0x25, 0x26, 0x27, - 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b, - 0x3c, 0x3d, 0x3e, 0x3f, 0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f, - 0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5a, 0x5b, 0x00, 0x5d, 0x5e, 0x5f, 0x60, 0x61, 0x62, 0x63, - 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, - 0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f, 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x8a, 0x8b, - 0x8c, 0x8d, 0x8e, 0x8f, 0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f, - 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, 0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf, 0xb0, 0xb1, 0xb2, 0xb3, - 0xb4, 0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf, 0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, - 0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf, 0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda, 0xdb, - 0xdc, 0xdd, 0xde, 0xdf, 0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef, - 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff -}; -#endif /* DUK_USE_JSON_DECSTRING_FASTPATH */ - -#if defined(DUK_USE_JSON_EATWHITE_FASTPATH) -DUK_LOCAL const duk_uint8_t duk__json_eatwhite_lookup[256] = { - /* 0x00: finish (non-white) - * 0x01: continue - */ - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 -}; -#endif /* DUK_USE_JSON_EATWHITE_FASTPATH */ - -#if defined(DUK_USE_JSON_DECNUMBER_FASTPATH) -DUK_LOCAL const duk_uint8_t duk__json_decnumber_lookup[256] = { - /* 0x00: finish (not part of number) - * 0x01: continue - */ - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x01, 0x00, 0x01, 0x01, 0x00, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 -}; -#endif /* DUK_USE_JSON_DECNUMBER_FASTPATH */ - -/* - * Parsing implementation. - * - * JSON lexer is now separate from duk_lexer.c because there are numerous - * small differences making it difficult to share the lexer. - * - * The parser here works with raw bytes directly; this works because all - * JSON delimiters are ASCII characters. Invalid xUTF-8 encoded values - * inside strings will be passed on without normalization; this is not a - * compliance concern because compliant inputs will always be valid - * CESU-8 encodings. - */ - -DUK_LOCAL void duk__json_dec_syntax_error(duk_json_dec_ctx *js_ctx) { - /* Shared handler to minimize parser size. Cause will be - * hidden, unfortunately, but we'll have an offset which - * is often quite enough. - */ - DUK_ERROR_FMT1(js_ctx->thr, DUK_ERR_SYNTAX_ERROR, DUK_STR_FMT_INVALID_JSON, (long) (js_ctx->p - js_ctx->p_start)); - DUK_WO_NORETURN(return;); -} - -DUK_LOCAL void duk__json_dec_eat_white(duk_json_dec_ctx *js_ctx) { - const duk_uint8_t *p; - duk_uint8_t t; - - p = js_ctx->p; - for (;;) { - DUK_ASSERT(p <= js_ctx->p_end); - t = *p; - -#if defined(DUK_USE_JSON_EATWHITE_FASTPATH) - /* This fast path is pretty marginal in practice. - * XXX: candidate for removal. - */ - DUK_ASSERT(duk__json_eatwhite_lookup[0x00] == 0x00); /* end-of-input breaks */ - if (duk__json_eatwhite_lookup[t] == 0) { - break; - } -#else /* DUK_USE_JSON_EATWHITE_FASTPATH */ - if (!(t == 0x20 || t == 0x0a || t == 0x0d || t == 0x09)) { - /* NUL also comes here. Comparison order matters, 0x20 - * is most common whitespace. - */ - break; - } -#endif /* DUK_USE_JSON_EATWHITE_FASTPATH */ - p++; - } - js_ctx->p = p; -} - -#if defined(DUK_USE_JX) -DUK_LOCAL duk_uint8_t duk__json_dec_peek(duk_json_dec_ctx *js_ctx) { - DUK_ASSERT(js_ctx->p <= js_ctx->p_end); - return *js_ctx->p; -} -#endif - -DUK_LOCAL duk_uint8_t duk__json_dec_get(duk_json_dec_ctx *js_ctx) { - DUK_ASSERT(js_ctx->p <= js_ctx->p_end); - return *js_ctx->p++; -} - -DUK_LOCAL duk_uint8_t duk__json_dec_get_nonwhite(duk_json_dec_ctx *js_ctx) { - duk__json_dec_eat_white(js_ctx); - return duk__json_dec_get(js_ctx); -} - -/* For JX, expressing the whole unsigned 32-bit range matters. */ -DUK_LOCAL duk_uint_fast32_t duk__json_dec_decode_hex_escape(duk_json_dec_ctx *js_ctx, duk_small_uint_t n) { - duk_small_uint_t i; - duk_uint_fast32_t res = 0; - duk_uint8_t x; - duk_small_int_t t; - - for (i = 0; i < n; i++) { - /* XXX: share helper from lexer; duk_lexer.c / hexval(). */ - - x = duk__json_dec_get(js_ctx); - DUK_DDD(DUK_DDDPRINT("decode_hex_escape: i=%ld, n=%ld, res=%ld, x=%ld", (long) i, (long) n, (long) res, (long) x)); - - /* x == 0x00 (EOF) causes syntax_error */ - DUK_ASSERT(duk_hex_dectab[0] == -1); - t = duk_hex_dectab[x & 0xff]; - if (DUK_LIKELY(t >= 0)) { - res = (res * 16) + (duk_uint_fast32_t) t; - } else { - /* catches EOF and invalid digits */ - goto syntax_error; - } - } - - DUK_DDD(DUK_DDDPRINT("final hex decoded value: %ld", (long) res)); - return res; - -syntax_error: - duk__json_dec_syntax_error(js_ctx); - DUK_UNREACHABLE(); - return 0; -} - -DUK_LOCAL void duk__json_dec_req_stridx(duk_json_dec_ctx *js_ctx, duk_small_uint_t stridx) { - duk_hstring *h; - const duk_uint8_t *p; - duk_uint8_t x, y; - - /* First character has already been eaten and checked by the caller. - * We can scan until a NUL in stridx string because no built-in strings - * have internal NULs. - */ - - DUK_ASSERT_STRIDX_VALID(stridx); - h = DUK_HTHREAD_GET_STRING(js_ctx->thr, stridx); - DUK_ASSERT(h != NULL); - - p = (const duk_uint8_t *) DUK_HSTRING_GET_DATA(h) + 1; - DUK_ASSERT(*(js_ctx->p - 1) == *(p - 1)); /* first character has been matched */ - - for (;;) { - x = *p; - if (x == 0) { - break; - } - y = duk__json_dec_get(js_ctx); - if (x != y) { - /* Catches EOF of JSON input. */ - goto syntax_error; - } - p++; - } - - return; - -syntax_error: - duk__json_dec_syntax_error(js_ctx); - DUK_UNREACHABLE(); -} - -DUK_LOCAL duk_small_int_t duk__json_dec_string_escape(duk_json_dec_ctx *js_ctx, duk_uint8_t **ext_p) { - duk_uint_fast32_t cp; - - /* EOF (-1) will be cast to an unsigned value first - * and then re-cast for the switch. In any case, it - * will match the default case (syntax error). - */ - cp = (duk_uint_fast32_t) duk__json_dec_get(js_ctx); - switch (cp) { - case DUK_ASC_BACKSLASH: - break; - case DUK_ASC_DOUBLEQUOTE: - break; - case DUK_ASC_SLASH: - break; - case DUK_ASC_LC_T: - cp = 0x09; - break; - case DUK_ASC_LC_N: - cp = 0x0a; - break; - case DUK_ASC_LC_R: - cp = 0x0d; - break; - case DUK_ASC_LC_F: - cp = 0x0c; - break; - case DUK_ASC_LC_B: - cp = 0x08; - break; - case DUK_ASC_LC_U: { - cp = duk__json_dec_decode_hex_escape(js_ctx, 4); - break; - } -#if defined(DUK_USE_JX) - case DUK_ASC_UC_U: { - if (js_ctx->flag_ext_custom) { - cp = duk__json_dec_decode_hex_escape(js_ctx, 8); - } else { - return 1; /* syntax error */ - } - break; - } - case DUK_ASC_LC_X: { - if (js_ctx->flag_ext_custom) { - cp = duk__json_dec_decode_hex_escape(js_ctx, 2); - } else { - return 1; /* syntax error */ - } - break; - } -#endif /* DUK_USE_JX */ - default: - /* catches EOF (0x00) */ - return 1; /* syntax error */ - } - - DUK_RAW_WRITEINC_XUTF8(*ext_p, cp); - - return 0; -} - -DUK_LOCAL void duk__json_dec_string(duk_json_dec_ctx *js_ctx) { - duk_hthread *thr = js_ctx->thr; - duk_bufwriter_ctx bw_alloc; - duk_bufwriter_ctx *bw; - duk_uint8_t *q; - - /* '"' was eaten by caller */ - - /* Note that we currently parse -bytes-, not codepoints. - * All non-ASCII extended UTF-8 will encode to bytes >= 0x80, - * so they'll simply pass through (valid UTF-8 or not). - */ - - bw = &bw_alloc; - DUK_BW_INIT_PUSHBUF(js_ctx->thr, bw, DUK__JSON_DECSTR_BUFSIZE); - q = DUK_BW_GET_PTR(js_ctx->thr, bw); - -#if defined(DUK_USE_JSON_DECSTRING_FASTPATH) - for (;;) { - duk_small_uint_t safe; - duk_uint8_t b, x; - const duk_uint8_t *p; - - /* Select a safe loop count where no output checks are - * needed assuming we won't encounter escapes. Input - * bound checks are not necessary as a NUL (guaranteed) - * will cause a SyntaxError before we read out of bounds. - */ - - safe = DUK__JSON_DECSTR_CHUNKSIZE; - - /* Ensure space for 1:1 output plus one escape. */ - q = DUK_BW_ENSURE_RAW(js_ctx->thr, bw, safe + DUK_UNICODE_MAX_XUTF8_LENGTH, q); - - p = js_ctx->p; /* temp copy, write back for next loop */ - for (;;) { - if (safe == 0) { - js_ctx->p = p; - break; - } - safe--; - - /* End of input (NUL) goes through slow path and causes SyntaxError. */ - DUK_ASSERT(duk__json_decstr_lookup[0] == 0x00); - - b = *p++; - x = (duk_small_int_t) duk__json_decstr_lookup[b]; - if (DUK_LIKELY(x != 0)) { - /* Fast path, decode as is. */ - *q++ = b; - } else if (b == DUK_ASC_DOUBLEQUOTE) { - js_ctx->p = p; - goto found_quote; - } else if (b == DUK_ASC_BACKSLASH) { - /* We've ensured space for one escaped input; then - * bail out and recheck (this makes escape handling - * quite slow but it's uncommon). - */ - js_ctx->p = p; - if (duk__json_dec_string_escape(js_ctx, &q) != 0) { - goto syntax_error; - } - break; - } else { - js_ctx->p = p; - goto syntax_error; - } - } - } -found_quote: -#else /* DUK_USE_JSON_DECSTRING_FASTPATH */ - for (;;) { - duk_uint8_t x; - - q = DUK_BW_ENSURE_RAW(js_ctx->thr, bw, DUK_UNICODE_MAX_XUTF8_LENGTH, q); - - x = duk__json_dec_get(js_ctx); - - if (x == DUK_ASC_DOUBLEQUOTE) { - break; - } else if (x == DUK_ASC_BACKSLASH) { - if (duk__json_dec_string_escape(js_ctx, &q) != 0) { - goto syntax_error; - } - } else if (x < 0x20) { - /* catches EOF (NUL) */ - goto syntax_error; - } else { - *q++ = (duk_uint8_t) x; - } - } -#endif /* DUK_USE_JSON_DECSTRING_FASTPATH */ - - DUK_BW_SETPTR_AND_COMPACT(js_ctx->thr, bw, q); - (void) duk_buffer_to_string(thr, -1); /* Safe if input string is safe. */ - - /* [ ... str ] */ - - return; - -syntax_error: - duk__json_dec_syntax_error(js_ctx); - DUK_UNREACHABLE(); -} - -#if defined(DUK_USE_JX) -/* Decode a plain string consisting entirely of identifier characters. - * Used to parse plain keys (e.g. "foo: 123"). - */ -DUK_LOCAL void duk__json_dec_plain_string(duk_json_dec_ctx *js_ctx) { - duk_hthread *thr = js_ctx->thr; - const duk_uint8_t *p; - duk_small_int_t x; - - /* Caller has already eaten the first char so backtrack one byte. */ - - js_ctx->p--; /* safe */ - p = js_ctx->p; - - /* Here again we parse bytes, and non-ASCII UTF-8 will cause end of - * parsing (which is correct except if there are non-shortest encodings). - * There is also no need to check explicitly for end of input buffer as - * the input is NUL padded and NUL will exit the parsing loop. - * - * Because no unescaping takes place, we can just scan to the end of the - * plain string and intern from the input buffer. - */ - - for (;;) { - x = *p; - - /* There is no need to check the first character specially here - * (i.e. reject digits): the caller only accepts valid initial - * characters and won't call us if the first character is a digit. - * This also ensures that the plain string won't be empty. - */ - - if (!duk_unicode_is_identifier_part((duk_codepoint_t) x)) { - break; - } - p++; - } - - duk_push_lstring(thr, (const char *) js_ctx->p, (duk_size_t) (p - js_ctx->p)); - js_ctx->p = p; - - /* [ ... str ] */ -} -#endif /* DUK_USE_JX */ - -#if defined(DUK_USE_JX) -DUK_LOCAL void duk__json_dec_pointer(duk_json_dec_ctx *js_ctx) { - duk_hthread *thr = js_ctx->thr; - const duk_uint8_t *p; - duk_small_int_t x; - void *voidptr; - - /* Caller has already eaten the first character ('(') which we don't need. */ - - p = js_ctx->p; - - for (;;) { - x = *p; - - /* Assume that the native representation never contains a closing - * parenthesis. - */ - - if (x == DUK_ASC_RPAREN) { - break; - } else if (x <= 0) { - /* NUL term or -1 (EOF), NUL check would suffice */ - goto syntax_error; - } - p++; - } - - /* There is no need to NUL delimit the sscanf() call: trailing garbage is - * ignored and there is always a NUL terminator which will force an error - * if no error is encountered before it. It's possible that the scan - * would scan further than between [js_ctx->p,p[ though and we'd advance - * by less than the scanned value. - * - * Because pointers are platform specific, a failure to scan a pointer - * results in a null pointer which is a better placeholder than a missing - * value or an error. - */ - - voidptr = NULL; - (void) DUK_SSCANF((const char *) js_ctx->p, DUK_STR_FMT_PTR, &voidptr); - duk_push_pointer(thr, voidptr); - js_ctx->p = p + 1; /* skip ')' */ - - /* [ ... ptr ] */ - - return; - -syntax_error: - duk__json_dec_syntax_error(js_ctx); - DUK_UNREACHABLE(); -} -#endif /* DUK_USE_JX */ - -#if defined(DUK_USE_JX) -DUK_LOCAL void duk__json_dec_buffer(duk_json_dec_ctx *js_ctx) { - duk_hthread *thr = js_ctx->thr; - const duk_uint8_t *p; - duk_uint8_t *buf; - duk_size_t src_len; - duk_small_int_t x; - - /* Caller has already eaten the first character ('|') which we don't need. */ - - p = js_ctx->p; - - /* XXX: Would be nice to share the fast path loop from duk_hex_decode() - * and avoid creating a temporary buffer. However, there are some - * differences which prevent trivial sharing: - * - * - Pipe char detection - * - EOF detection - * - Unknown length of input and output - * - * The best approach here would be a bufwriter and a reasonaly sized - * safe inner loop (e.g. 64 output bytes at a time). - */ - - for (;;) { - x = *p; - - /* This loop intentionally does not ensure characters are valid - * ([0-9a-fA-F]) because the hex decode call below will do that. - */ - if (x == DUK_ASC_PIPE) { - break; - } else if (x <= 0) { - /* NUL term or -1 (EOF), NUL check would suffice */ - goto syntax_error; - } - p++; - } - - /* XXX: this is not very nice; unnecessary copy is made. */ - src_len = (duk_size_t) (p - js_ctx->p); - buf = (duk_uint8_t *) duk_push_fixed_buffer_nozero(thr, src_len); - DUK_ASSERT(buf != NULL); - duk_memcpy((void *) buf, (const void *) js_ctx->p, src_len); - duk_hex_decode(thr, -1); - - js_ctx->p = p + 1; /* skip '|' */ - - /* [ ... buf ] */ - - return; - -syntax_error: - duk__json_dec_syntax_error(js_ctx); - DUK_UNREACHABLE(); -} -#endif /* DUK_USE_JX */ - -/* Parse a number, other than NaN or +/- Infinity */ -DUK_LOCAL void duk__json_dec_number(duk_json_dec_ctx *js_ctx) { - duk_hthread *thr = js_ctx->thr; - const duk_uint8_t *p_start; - const duk_uint8_t *p; - duk_uint8_t x; - duk_small_uint_t s2n_flags; - - DUK_DDD(DUK_DDDPRINT("parse_number")); - - p_start = js_ctx->p; - - /* First pass parse is very lenient (e.g. allows '1.2.3') and extracts a - * string for strict number parsing. - */ - - p = js_ctx->p; - for (;;) { - x = *p; - - DUK_DDD(DUK_DDDPRINT("parse_number: p_start=%p, p=%p, p_end=%p, x=%ld", - (const void *) p_start, - (const void *) p, - (const void *) js_ctx->p_end, - (long) x)); - -#if defined(DUK_USE_JSON_DECNUMBER_FASTPATH) - /* This fast path is pretty marginal in practice. - * XXX: candidate for removal. - */ - DUK_ASSERT(duk__json_decnumber_lookup[0x00] == 0x00); /* end-of-input breaks */ - if (duk__json_decnumber_lookup[x] == 0) { - break; - } -#else /* DUK_USE_JSON_DECNUMBER_FASTPATH */ - if (!((x >= DUK_ASC_0 && x <= DUK_ASC_9) || - (x == DUK_ASC_PERIOD || x == DUK_ASC_LC_E || x == DUK_ASC_UC_E || x == DUK_ASC_MINUS || x == DUK_ASC_PLUS))) { - /* Plus sign must be accepted for positive exponents - * (e.g. '1.5e+2'). This clause catches NULs. - */ - break; - } -#endif /* DUK_USE_JSON_DECNUMBER_FASTPATH */ - p++; /* safe, because matched (NUL causes a break) */ - } - js_ctx->p = p; - - DUK_ASSERT(js_ctx->p > p_start); - duk_push_lstring(thr, (const char *) p_start, (duk_size_t) (p - p_start)); - - s2n_flags = DUK_S2N_FLAG_ALLOW_EXP | DUK_S2N_FLAG_ALLOW_MINUS | /* but don't allow leading plus */ - DUK_S2N_FLAG_ALLOW_FRAC; - - DUK_DDD(DUK_DDDPRINT("parse_number: string before parsing: %!T", (duk_tval *) duk_get_tval(thr, -1))); - duk_numconv_parse(thr, 10 /*radix*/, s2n_flags); - if (duk_is_nan(thr, -1)) { - duk__json_dec_syntax_error(js_ctx); - } - DUK_ASSERT(duk_is_number(thr, -1)); - DUK_DDD(DUK_DDDPRINT("parse_number: final number: %!T", (duk_tval *) duk_get_tval(thr, -1))); - - /* [ ... num ] */ -} - -DUK_LOCAL void duk__json_dec_objarr_entry(duk_json_dec_ctx *js_ctx) { - duk_hthread *thr = js_ctx->thr; - duk_require_stack(thr, DUK_JSON_DEC_REQSTACK); - - /* c recursion check */ - - duk_native_stack_check(thr); - - DUK_ASSERT_DISABLE(js_ctx->recursion_depth >= 0); /* unsigned */ - DUK_ASSERT(js_ctx->recursion_depth <= js_ctx->recursion_limit); - if (js_ctx->recursion_depth >= js_ctx->recursion_limit) { - DUK_ERROR_RANGE(thr, DUK_STR_DEC_RECLIMIT); - DUK_WO_NORETURN(return;); - } - js_ctx->recursion_depth++; -} - -DUK_LOCAL void duk__json_dec_objarr_exit(duk_json_dec_ctx *js_ctx) { - /* c recursion check */ - - DUK_ASSERT(js_ctx->recursion_depth > 0); - DUK_ASSERT(js_ctx->recursion_depth <= js_ctx->recursion_limit); - js_ctx->recursion_depth--; -} - -DUK_LOCAL void duk__json_dec_object(duk_json_dec_ctx *js_ctx) { - duk_hthread *thr = js_ctx->thr; - duk_int_t key_count; /* XXX: a "first" flag would suffice */ - duk_uint8_t x; - - DUK_DDD(DUK_DDDPRINT("parse_object")); - - duk__json_dec_objarr_entry(js_ctx); - - duk_push_object(thr); - - /* Initial '{' has been checked and eaten by caller. */ - - key_count = 0; - for (;;) { - x = duk__json_dec_get_nonwhite(js_ctx); - - DUK_DDD(DUK_DDDPRINT("parse_object: obj=%!T, x=%ld, key_count=%ld", - (duk_tval *) duk_get_tval(thr, -1), - (long) x, - (long) key_count)); - - /* handle comma and closing brace */ - - if (x == DUK_ASC_COMMA && key_count > 0) { - /* accept comma, expect new value */ - x = duk__json_dec_get_nonwhite(js_ctx); - } else if (x == DUK_ASC_RCURLY) { - /* eat closing brace */ - break; - } else if (key_count == 0) { - /* accept anything, expect first value (EOF will be - * caught by key parsing below. - */ - ; - } else { - /* catches EOF (NUL) and initial comma */ - goto syntax_error; - } - - /* parse key and value */ - - if (x == DUK_ASC_DOUBLEQUOTE) { - duk__json_dec_string(js_ctx); -#if defined(DUK_USE_JX) - } else if (js_ctx->flag_ext_custom && duk_unicode_is_identifier_start((duk_codepoint_t) x)) { - duk__json_dec_plain_string(js_ctx); -#endif - } else { - goto syntax_error; - } - - /* [ ... obj key ] */ - - x = duk__json_dec_get_nonwhite(js_ctx); - if (x != DUK_ASC_COLON) { - goto syntax_error; - } - - duk__json_dec_value(js_ctx); - - /* [ ... obj key val ] */ - - duk_xdef_prop_wec(thr, -3); - - /* [ ... obj ] */ - - key_count++; - } - - /* [ ... obj ] */ - - DUK_DDD(DUK_DDDPRINT("parse_object: final object is %!T", (duk_tval *) duk_get_tval(thr, -1))); - - duk__json_dec_objarr_exit(js_ctx); - return; - -syntax_error: - duk__json_dec_syntax_error(js_ctx); - DUK_UNREACHABLE(); -} - -DUK_LOCAL void duk__json_dec_array(duk_json_dec_ctx *js_ctx) { - duk_hthread *thr = js_ctx->thr; - duk_uarridx_t arr_idx; - duk_uint8_t x; - - DUK_DDD(DUK_DDDPRINT("parse_array")); - - duk__json_dec_objarr_entry(js_ctx); - - duk_push_array(thr); - - /* Initial '[' has been checked and eaten by caller. */ - - arr_idx = 0; - for (;;) { - x = duk__json_dec_get_nonwhite(js_ctx); - - DUK_DDD(DUK_DDDPRINT("parse_array: arr=%!T, x=%ld, arr_idx=%ld", - (duk_tval *) duk_get_tval(thr, -1), - (long) x, - (long) arr_idx)); - - /* handle comma and closing bracket */ - - if ((x == DUK_ASC_COMMA) && (arr_idx != 0)) { - /* accept comma, expect new value */ - ; - } else if (x == DUK_ASC_RBRACKET) { - /* eat closing bracket */ - break; - } else if (arr_idx == 0) { - /* accept anything, expect first value (EOF will be - * caught by duk__json_dec_value() below. - */ - js_ctx->p--; /* backtrack (safe) */ - } else { - /* catches EOF (NUL) and initial comma */ - goto syntax_error; - } - - /* parse value */ - - duk__json_dec_value(js_ctx); - - /* [ ... arr val ] */ - - duk_xdef_prop_index_wec(thr, -2, arr_idx); - arr_idx++; - } - - /* Must set 'length' explicitly when using duk_xdef_prop_xxx() to - * set the values. - */ - - duk_set_length(thr, -1, arr_idx); - - /* [ ... arr ] */ - - DUK_DDD(DUK_DDDPRINT("parse_array: final array is %!T", (duk_tval *) duk_get_tval(thr, -1))); - - duk__json_dec_objarr_exit(js_ctx); - return; - -syntax_error: - duk__json_dec_syntax_error(js_ctx); - DUK_UNREACHABLE(); -} - -DUK_LOCAL void duk__json_dec_value(duk_json_dec_ctx *js_ctx) { - duk_hthread *thr = js_ctx->thr; - duk_uint8_t x; - - x = duk__json_dec_get_nonwhite(js_ctx); - - DUK_DDD(DUK_DDDPRINT("parse_value: initial x=%ld", (long) x)); - - /* Note: duk__json_dec_req_stridx() backtracks one char */ - - if (x == DUK_ASC_DOUBLEQUOTE) { - duk__json_dec_string(js_ctx); - } else if ((x >= DUK_ASC_0 && x <= DUK_ASC_9) || (x == DUK_ASC_MINUS)) { -#if defined(DUK_USE_JX) - if (js_ctx->flag_ext_custom && x == DUK_ASC_MINUS && duk__json_dec_peek(js_ctx) == DUK_ASC_UC_I) { - duk__json_dec_req_stridx(js_ctx, DUK_STRIDX_MINUS_INFINITY); /* "-Infinity", '-' has been eaten */ - duk_push_number(thr, -DUK_DOUBLE_INFINITY); - } else { -#else - { /* unconditional block */ -#endif - /* We already ate 'x', so backup one byte. */ - js_ctx->p--; /* safe */ - duk__json_dec_number(js_ctx); - } - } else if (x == DUK_ASC_LC_T) { - duk__json_dec_req_stridx(js_ctx, DUK_STRIDX_TRUE); - duk_push_true(thr); - } else if (x == DUK_ASC_LC_F) { - duk__json_dec_req_stridx(js_ctx, DUK_STRIDX_FALSE); - duk_push_false(thr); - } else if (x == DUK_ASC_LC_N) { - duk__json_dec_req_stridx(js_ctx, DUK_STRIDX_LC_NULL); - duk_push_null(thr); -#if defined(DUK_USE_JX) - } else if (js_ctx->flag_ext_custom && x == DUK_ASC_LC_U) { - duk__json_dec_req_stridx(js_ctx, DUK_STRIDX_LC_UNDEFINED); - duk_push_undefined(thr); - } else if (js_ctx->flag_ext_custom && x == DUK_ASC_UC_N) { - duk__json_dec_req_stridx(js_ctx, DUK_STRIDX_NAN); - duk_push_nan(thr); - } else if (js_ctx->flag_ext_custom && x == DUK_ASC_UC_I) { - duk__json_dec_req_stridx(js_ctx, DUK_STRIDX_INFINITY); - duk_push_number(thr, DUK_DOUBLE_INFINITY); - } else if (js_ctx->flag_ext_custom && x == DUK_ASC_LPAREN) { - duk__json_dec_pointer(js_ctx); - } else if (js_ctx->flag_ext_custom && x == DUK_ASC_PIPE) { - duk__json_dec_buffer(js_ctx); -#endif - } else if (x == DUK_ASC_LCURLY) { - duk__json_dec_object(js_ctx); - } else if (x == DUK_ASC_LBRACKET) { - duk__json_dec_array(js_ctx); - } else { - /* catches EOF (NUL) */ - goto syntax_error; - } - - duk__json_dec_eat_white(js_ctx); - - /* [ ... val ] */ - return; - -syntax_error: - duk__json_dec_syntax_error(js_ctx); - DUK_UNREACHABLE(); -} - -/* Recursive value reviver, implements the Walk() algorithm. The parsing - * step ensures there is a reasonable depth limit to the input. However, - * the reviver may create more depth by editing object or array entries, so - * we have both C recursion limit and native stack checks here. - */ -DUK_LOCAL void duk__json_dec_reviver_walk(duk_json_dec_ctx *js_ctx) { - duk_hthread *thr = js_ctx->thr; - duk_hobject *h; - duk_uarridx_t i, arr_len; - - duk__json_dec_objarr_entry(js_ctx); - - DUK_DDD(DUK_DDDPRINT("walk: top=%ld, holder=%!T, name=%!T", - (long) duk_get_top(thr), - (duk_tval *) duk_get_tval(thr, -2), - (duk_tval *) duk_get_tval(thr, -1))); - - duk_dup_top(thr); - duk_get_prop(thr, -3); /* -> [ ... holder name val ] */ - - h = duk_get_hobject(thr, -1); - if (h != NULL) { - if (duk_js_isarray_hobject(h)) { - arr_len = (duk_uarridx_t) duk_get_length(thr, -1); - for (i = 0; i < arr_len; i++) { - /* [ ... holder name val ] */ - - DUK_DDD(DUK_DDDPRINT("walk: array, top=%ld, i=%ld, arr_len=%ld, holder=%!T, name=%!T, val=%!T", - (long) duk_get_top(thr), - (long) i, - (long) arr_len, - (duk_tval *) duk_get_tval(thr, -3), - (duk_tval *) duk_get_tval(thr, -2), - (duk_tval *) duk_get_tval(thr, -1))); - - duk_dup_top(thr); - (void) duk_push_uint_to_hstring(thr, - (duk_uint_t) i); /* -> [ ... holder name val val ToString(i) ] */ - duk__json_dec_reviver_walk(js_ctx); /* -> [ ... holder name val new_elem ] */ - - if (duk_is_undefined(thr, -1)) { - duk_pop(thr); - duk_del_prop_index(thr, -1, i); - } else { - /* XXX: duk_xdef_prop_index_wec() would be more appropriate - * here but it currently makes some assumptions that might - * not hold (e.g. that previous property is not an accessor). - */ - duk_put_prop_index(thr, -2, i); - } - } - } else { - /* [ ... holder name val ] */ - duk_enum(thr, -1, DUK_ENUM_OWN_PROPERTIES_ONLY /*flags*/); - while (duk_next(thr, -1 /*enum_index*/, 0 /*get_value*/)) { - DUK_DDD(DUK_DDDPRINT("walk: object, top=%ld, holder=%!T, name=%!T, val=%!T, enum=%!iT, obj_key=%!T", - (long) duk_get_top(thr), - (duk_tval *) duk_get_tval(thr, -5), - (duk_tval *) duk_get_tval(thr, -4), - (duk_tval *) duk_get_tval(thr, -3), - (duk_tval *) duk_get_tval(thr, -2), - (duk_tval *) duk_get_tval(thr, -1))); - - /* [ ... holder name val enum obj_key ] */ - duk_dup_m3(thr); - duk_dup_m2(thr); - - /* [ ... holder name val enum obj_key val obj_key ] */ - duk__json_dec_reviver_walk(js_ctx); - - /* [ ... holder name val enum obj_key new_elem ] */ - if (duk_is_undefined(thr, -1)) { - duk_pop(thr); - duk_del_prop(thr, -3); - } else { - /* XXX: duk_xdef_prop_index_wec() would be more appropriate - * here but it currently makes some assumptions that might - * not hold (e.g. that previous property is not an accessor). - * - * Using duk_put_prop() works incorrectly with '__proto__' - * if the own property with that name has been deleted. This - * does not happen normally, but a clever reviver can trigger - * that, see complex reviver case in: test-bug-json-parse-__proto__.js. - */ - duk_put_prop(thr, -4); - } - } - duk_pop(thr); /* pop enum */ - } - } - - /* [ ... holder name val ] */ - - duk_dup(thr, js_ctx->idx_reviver); - duk_insert(thr, -4); /* -> [ ... reviver holder name val ] */ - duk_call_method(thr, 2); /* -> [ ... res ] */ - - duk__json_dec_objarr_exit(js_ctx); - - DUK_DDD(DUK_DDDPRINT("walk: top=%ld, result=%!T", (long) duk_get_top(thr), (duk_tval *) duk_get_tval(thr, -1))); -} - -/* - * Stringify implementation. - */ - -#define DUK__EMIT_1(js_ctx, ch) duk__emit_1((js_ctx), (duk_uint_fast8_t) (ch)) -#define DUK__EMIT_2(js_ctx, ch1, ch2) duk__emit_2((js_ctx), (duk_uint_fast8_t) (ch1), (duk_uint_fast8_t) (ch2)) -#define DUK__EMIT_HSTR(js_ctx, h) duk__emit_hstring((js_ctx), (h)) -#if defined(DUK_USE_FASTINT) || defined(DUK_USE_JX) || defined(DUK_USE_JC) -#define DUK__EMIT_CSTR(js_ctx, p) duk__emit_cstring((js_ctx), (p)) -#endif -#define DUK__EMIT_STRIDX(js_ctx, i) duk__emit_stridx((js_ctx), (i)) -#define DUK__UNEMIT_1(js_ctx) duk__unemit_1((js_ctx)) - -DUK_LOCAL void duk__emit_1(duk_json_enc_ctx *js_ctx, duk_uint_fast8_t ch) { - DUK_BW_WRITE_ENSURE_U8(js_ctx->thr, &js_ctx->bw, ch); -} - -DUK_LOCAL void duk__emit_2(duk_json_enc_ctx *js_ctx, duk_uint_fast8_t ch1, duk_uint_fast8_t ch2) { - DUK_BW_WRITE_ENSURE_U8_2(js_ctx->thr, &js_ctx->bw, ch1, ch2); -} - -DUK_LOCAL void duk__emit_hstring(duk_json_enc_ctx *js_ctx, duk_hstring *h) { - DUK_BW_WRITE_ENSURE_HSTRING(js_ctx->thr, &js_ctx->bw, h); -} - -#if defined(DUK_USE_FASTINT) || defined(DUK_USE_JX) || defined(DUK_USE_JC) -DUK_LOCAL void duk__emit_cstring(duk_json_enc_ctx *js_ctx, const char *str) { - DUK_BW_WRITE_ENSURE_CSTRING(js_ctx->thr, &js_ctx->bw, str); -} -#endif - -DUK_LOCAL void duk__emit_stridx(duk_json_enc_ctx *js_ctx, duk_small_uint_t stridx) { - duk_hstring *h; - - DUK_ASSERT_STRIDX_VALID(stridx); - h = DUK_HTHREAD_GET_STRING(js_ctx->thr, stridx); - DUK_ASSERT(h != NULL); - - DUK_BW_WRITE_ENSURE_HSTRING(js_ctx->thr, &js_ctx->bw, h); -} - -DUK_LOCAL void duk__unemit_1(duk_json_enc_ctx *js_ctx) { - DUK_ASSERT(DUK_BW_GET_SIZE(js_ctx->thr, &js_ctx->bw) >= 1); - DUK_BW_ADD_PTR(js_ctx->thr, &js_ctx->bw, -1); -} - -#define DUK__MKESC(nybbles, esc1, esc2) \ - (((duk_uint_fast32_t) (nybbles)) << 16) | (((duk_uint_fast32_t) (esc1)) << 8) | ((duk_uint_fast32_t) (esc2)) - -DUK_LOCAL duk_uint8_t *duk__emit_esc_auto_fast(duk_json_enc_ctx *js_ctx, duk_uint_fast32_t cp, duk_uint8_t *q) { - duk_uint_fast32_t tmp; - duk_small_uint_t dig; - - DUK_UNREF(js_ctx); - - /* Caller ensures space for at least DUK__JSON_MAX_ESC_LEN. */ - - /* Select appropriate escape format automatically, and set 'tmp' to a - * value encoding both the escape format character and the nybble count: - * - * (nybble_count << 16) | (escape_char1) | (escape_char2) - */ - -#if defined(DUK_USE_JX) - if (DUK_LIKELY(cp < 0x100UL)) { - if (DUK_UNLIKELY(js_ctx->flag_ext_custom != 0U)) { - tmp = DUK__MKESC(2, DUK_ASC_BACKSLASH, DUK_ASC_LC_X); - } else { - tmp = DUK__MKESC(4, DUK_ASC_BACKSLASH, DUK_ASC_LC_U); - } - } else -#endif - if (DUK_LIKELY(cp < 0x10000UL)) { - tmp = DUK__MKESC(4, DUK_ASC_BACKSLASH, DUK_ASC_LC_U); - } else { -#if defined(DUK_USE_JX) - if (DUK_LIKELY(js_ctx->flag_ext_custom != 0U)) { - tmp = DUK__MKESC(8, DUK_ASC_BACKSLASH, DUK_ASC_UC_U); - } else -#endif - { - /* In compatible mode and standard JSON mode, output - * something useful for non-BMP characters. This won't - * roundtrip but will still be more or less readable and - * more useful than an error. - */ - tmp = DUK__MKESC(8, DUK_ASC_UC_U, DUK_ASC_PLUS); - } - } - - *q++ = (duk_uint8_t) ((tmp >> 8) & 0xff); - *q++ = (duk_uint8_t) (tmp & 0xff); - - tmp = tmp >> 16; - while (tmp > 0) { - tmp--; - dig = (duk_small_uint_t) ((cp >> (4 * tmp)) & 0x0f); - *q++ = duk_lc_digits[dig]; - } - - return q; -} - -DUK_LOCAL void duk__json_enc_key_autoquote(duk_json_enc_ctx *js_ctx, duk_hstring *k) { - const duk_int8_t *p, *p_start, *p_end; /* Note: intentionally signed. */ - duk_size_t k_len; - duk_codepoint_t cp; - - DUK_ASSERT(k != NULL); - - /* Accept ASCII strings which conform to identifier requirements - * as being emitted without key quotes. Since we only accept ASCII - * there's no need for actual decoding: 'p' is intentionally signed - * so that bytes >= 0x80 extend to negative values and are rejected - * as invalid identifier codepoints. - */ - - if (js_ctx->flag_avoid_key_quotes) { - k_len = DUK_HSTRING_GET_BYTELEN(k); - p_start = (const duk_int8_t *) DUK_HSTRING_GET_DATA(k); - p_end = p_start + k_len; - p = p_start; - - if (p == p_end) { - /* Zero length string is not accepted without quotes */ - goto quote_normally; - } - cp = (duk_codepoint_t) (*p++); - if (DUK_UNLIKELY(!duk_unicode_is_identifier_start(cp))) { - goto quote_normally; - } - while (p < p_end) { - cp = (duk_codepoint_t) (*p++); - if (DUK_UNLIKELY(!duk_unicode_is_identifier_part(cp))) { - goto quote_normally; - } - } - - /* This seems faster than emitting bytes one at a time and - * then potentially rewinding. - */ - DUK__EMIT_HSTR(js_ctx, k); - return; - } - -quote_normally: - duk__json_enc_quote_string(js_ctx, k); -} - -/* The Quote(value) operation: quote a string. - * - * Stack policy: [ ] -> [ ]. - */ - -DUK_LOCAL void duk__json_enc_quote_string(duk_json_enc_ctx *js_ctx, duk_hstring *h_str) { - duk_hthread *thr = js_ctx->thr; - const duk_uint8_t *p, *p_start, *p_end, *p_now, *p_tmp; - duk_uint8_t *q; - duk_ucodepoint_t cp; /* typed for duk_unicode_decode_xutf8() */ - - DUK_DDD(DUK_DDDPRINT("duk__json_enc_quote_string: h_str=%!O", (duk_heaphdr *) h_str)); - - DUK_ASSERT(h_str != NULL); - p_start = DUK_HSTRING_GET_DATA(h_str); - p_end = p_start + DUK_HSTRING_GET_BYTELEN(h_str); - p = p_start; - - DUK__EMIT_1(js_ctx, DUK_ASC_DOUBLEQUOTE); - - /* Encode string in small chunks, estimating the maximum expansion so that - * there's no need to ensure space while processing the chunk. - */ - - while (p < p_end) { - duk_size_t left, now, space; - - left = (duk_size_t) (p_end - p); - now = (left > DUK__JSON_ENCSTR_CHUNKSIZE ? DUK__JSON_ENCSTR_CHUNKSIZE : left); - - /* Maximum expansion per input byte is 6: - * - invalid UTF-8 byte causes "\uXXXX" to be emitted (6/1 = 6). - * - 2-byte UTF-8 encodes as "\uXXXX" (6/2 = 3). - * - 4-byte UTF-8 encodes as "\Uxxxxxxxx" (10/4 = 2.5). - */ - space = now * 6; - q = DUK_BW_ENSURE_GETPTR(thr, &js_ctx->bw, space); - - p_now = p + now; - - while (p < p_now) { -#if defined(DUK_USE_JSON_QUOTESTRING_FASTPATH) - duk_uint8_t b; - - b = duk__json_quotestr_lookup[*p++]; - if (DUK_LIKELY(b < 0x80)) { - /* Most input bytes go through here. */ - *q++ = b; - } else if (b >= 0xa0) { - *q++ = DUK_ASC_BACKSLASH; - *q++ = (duk_uint8_t) (b - 0x80); - } else if (b == 0x80) { - cp = (duk_ucodepoint_t) (*(p - 1)); - q = duk__emit_esc_auto_fast(js_ctx, cp, q); - } else if (b == 0x7f && js_ctx->flag_ascii_only) { - /* 0x7F is special */ - DUK_ASSERT(b == 0x81); - cp = (duk_ucodepoint_t) 0x7f; - q = duk__emit_esc_auto_fast(js_ctx, cp, q); - } else { - DUK_ASSERT(b == 0x81); - p--; - - /* slow path is shared */ -#else /* DUK_USE_JSON_QUOTESTRING_FASTPATH */ - cp = *p; - - if (DUK_LIKELY(cp <= 0x7f)) { - /* ascii fast path: avoid decoding utf-8 */ - p++; - if (cp == 0x22 || cp == 0x5c) { - /* double quote or backslash */ - *q++ = DUK_ASC_BACKSLASH; - *q++ = (duk_uint8_t) cp; - } else if (cp < 0x20) { - duk_uint_fast8_t esc_char; - - /* This approach is a bit shorter than a straight - * if-else-ladder and also a bit faster. - */ - if (cp < (sizeof(duk__json_quotestr_esc) / sizeof(duk_uint8_t)) && - (esc_char = duk__json_quotestr_esc[cp]) != 0) { - *q++ = DUK_ASC_BACKSLASH; - *q++ = (duk_uint8_t) esc_char; - } else { - q = duk__emit_esc_auto_fast(js_ctx, cp, q); - } - } else if (cp == 0x7f && js_ctx->flag_ascii_only) { - q = duk__emit_esc_auto_fast(js_ctx, cp, q); - } else { - /* any other printable -> as is */ - *q++ = (duk_uint8_t) cp; - } - } else { - /* slow path is shared */ -#endif /* DUK_USE_JSON_QUOTESTRING_FASTPATH */ - - /* slow path decode */ - - /* If XUTF-8 decoding fails, treat the offending byte as a codepoint directly - * and go forward one byte. This is of course very lossy, but allows some kind - * of output to be produced even for internal strings which don't conform to - * XUTF-8. All standard ECMAScript strings are always CESU-8, so this behavior - * does not violate the ECMAScript specification. The behavior is applied to - * all modes, including ECMAScript standard JSON. Because the current XUTF-8 - * decoding is not very strict, this behavior only really affects initial bytes - * and truncated codepoints. - * - * Another alternative would be to scan forwards to start of next codepoint - * (or end of input) and emit just one replacement codepoint. - */ - - p_tmp = p; - if (!duk_unicode_decode_xutf8(thr, &p, p_start, p_end, &cp)) { - /* Decode failed. */ - cp = *p_tmp; - p = p_tmp + 1; - } - -#if defined(DUK_USE_NONSTD_JSON_ESC_U2028_U2029) - if (js_ctx->flag_ascii_only || cp == 0x2028 || cp == 0x2029) { -#else - if (js_ctx->flag_ascii_only) { -#endif - q = duk__emit_esc_auto_fast(js_ctx, cp, q); - } else { - /* as is */ - DUK_RAW_WRITEINC_XUTF8(q, cp); - } - } - } - - DUK_BW_SET_PTR(thr, &js_ctx->bw, q); - } - - DUK__EMIT_1(js_ctx, DUK_ASC_DOUBLEQUOTE); -} - -/* Encode a double (checked by caller) from stack top. Stack top may be - * replaced by serialized string but is not popped (caller does that). - */ -DUK_LOCAL void duk__json_enc_double(duk_json_enc_ctx *js_ctx) { - duk_hthread *thr; - duk_tval *tv; - duk_double_t d; - duk_small_int_t c; - duk_small_int_t s; - duk_small_uint_t stridx; - duk_small_uint_t n2s_flags; - duk_hstring *h_str; - - DUK_ASSERT(js_ctx != NULL); - thr = js_ctx->thr; - DUK_ASSERT(thr != NULL); - - /* Caller must ensure 'tv' is indeed a double and not a fastint! */ - tv = DUK_GET_TVAL_NEGIDX(thr, -1); - DUK_ASSERT(DUK_TVAL_IS_DOUBLE(tv)); - d = DUK_TVAL_GET_DOUBLE(tv); - - c = (duk_small_int_t) DUK_FPCLASSIFY(d); - s = (duk_small_int_t) DUK_SIGNBIT(d); - DUK_UNREF(s); - - if (DUK_LIKELY(!(c == DUK_FP_INFINITE || c == DUK_FP_NAN))) { - DUK_ASSERT(DUK_ISFINITE(d)); - -#if defined(DUK_USE_JX) || defined(DUK_USE_JC) - /* Negative zero needs special handling in JX/JC because - * it would otherwise serialize to '0', not '-0'. - */ - if (DUK_UNLIKELY(c == DUK_FP_ZERO && s != 0 && (js_ctx->flag_ext_custom_or_compatible))) { - duk_push_hstring_stridx(thr, DUK_STRIDX_MINUS_ZERO); /* '-0' */ - } else -#endif /* DUK_USE_JX || DUK_USE_JC */ - { - n2s_flags = 0; - /* [ ... number ] -> [ ... string ] */ - duk_numconv_stringify(thr, 10 /*radix*/, 0 /*digits*/, n2s_flags); - } - h_str = duk_known_hstring(thr, -1); - DUK__EMIT_HSTR(js_ctx, h_str); - return; - } - -#if defined(DUK_USE_JX) || defined(DUK_USE_JC) - if (!(js_ctx->flags & (DUK_JSON_FLAG_EXT_CUSTOM | DUK_JSON_FLAG_EXT_COMPATIBLE))) { - stridx = DUK_STRIDX_LC_NULL; - } else if (c == DUK_FP_NAN) { - stridx = js_ctx->stridx_custom_nan; - } else if (s == 0) { - stridx = js_ctx->stridx_custom_posinf; - } else { - stridx = js_ctx->stridx_custom_neginf; - } -#else - stridx = DUK_STRIDX_LC_NULL; -#endif - DUK__EMIT_STRIDX(js_ctx, stridx); -} - -#if defined(DUK_USE_FASTINT) -/* Encode a fastint from duk_tval ptr, no value stack effects. */ -DUK_LOCAL void duk__json_enc_fastint_tval(duk_json_enc_ctx *js_ctx, duk_tval *tv) { - duk_int64_t v; - - /* Fastint range is signed 48-bit so longest value is -2^47 = -140737488355328 - * (16 chars long), longest signed 64-bit value is -2^63 = -9223372036854775808 - * (20 chars long). Alloc space for 64-bit range to be safe. - */ - duk_uint8_t buf[20 + 1]; - - /* Caller must ensure 'tv' is indeed a fastint! */ - DUK_ASSERT(DUK_TVAL_IS_FASTINT(tv)); - v = DUK_TVAL_GET_FASTINT(tv); - - /* XXX: There are no format strings in duk_config.h yet, could add - * one for formatting duk_int64_t. For now, assumes "%lld" and that - * "long long" type exists. Could also rely on C99 directly but that - * won't work for older MSVC. - */ - DUK_SPRINTF((char *) buf, "%lld", (long long) v); - DUK__EMIT_CSTR(js_ctx, (const char *) buf); -} -#endif - -#if defined(DUK_USE_JX) || defined(DUK_USE_JC) -#if defined(DUK_USE_HEX_FASTPATH) -DUK_LOCAL duk_uint8_t *duk__json_enc_buffer_data_hex(const duk_uint8_t *src, duk_size_t src_len, duk_uint8_t *dst) { - duk_uint8_t *q; - duk_uint16_t *q16; - duk_small_uint_t x; - duk_size_t i, len_safe; -#if !defined(DUK_USE_UNALIGNED_ACCESSES_POSSIBLE) - duk_bool_t shift_dst; -#endif - - /* Unlike in duk_hex_encode() 'dst' is not necessarily aligned by 2. - * For platforms where unaligned accesses are not allowed, shift 'dst' - * ahead by 1 byte to get alignment and then duk_memmove() the result - * in place. The faster encoding loop makes up the difference. - * There's always space for one extra byte because a terminator always - * follows the hex data and that's been accounted for by the caller. - */ - -#if defined(DUK_USE_UNALIGNED_ACCESSES_POSSIBLE) - q16 = (duk_uint16_t *) (void *) dst; -#else - shift_dst = (duk_bool_t) (((duk_size_t) dst) & 0x01U); - if (shift_dst) { - DUK_DD(DUK_DDPRINT("unaligned accesses not possible, dst not aligned -> step to dst + 1")); - q16 = (duk_uint16_t *) (void *) (dst + 1); - } else { - DUK_DD(DUK_DDPRINT("unaligned accesses not possible, dst is aligned")); - q16 = (duk_uint16_t *) (void *) dst; - } - DUK_ASSERT((((duk_size_t) q16) & 0x01U) == 0); -#endif - - len_safe = src_len & ~0x03U; - for (i = 0; i < len_safe; i += 4) { - q16[0] = duk_hex_enctab[src[i]]; - q16[1] = duk_hex_enctab[src[i + 1]]; - q16[2] = duk_hex_enctab[src[i + 2]]; - q16[3] = duk_hex_enctab[src[i + 3]]; - q16 += 4; - } - q = (duk_uint8_t *) q16; - -#if !defined(DUK_USE_UNALIGNED_ACCESSES_POSSIBLE) - if (shift_dst) { - q--; - duk_memmove((void *) dst, (const void *) (dst + 1), 2 * len_safe); - DUK_ASSERT(dst + 2 * len_safe == q); - } -#endif - - for (; i < src_len; i++) { - x = src[i]; - *q++ = duk_lc_digits[x >> 4]; - *q++ = duk_lc_digits[x & 0x0f]; - } - - return q; -} -#else /* DUK_USE_HEX_FASTPATH */ -DUK_LOCAL duk_uint8_t *duk__json_enc_buffer_data_hex(const duk_uint8_t *src, duk_size_t src_len, duk_uint8_t *dst) { - const duk_uint8_t *p; - const duk_uint8_t *p_end; - duk_uint8_t *q; - duk_small_uint_t x; - - p = src; - p_end = src + src_len; - q = dst; - while (p != p_end) { - x = *p++; - *q++ = duk_lc_digits[x >> 4]; - *q++ = duk_lc_digits[x & 0x0f]; - } - - return q; -} -#endif /* DUK_USE_HEX_FASTPATH */ - -DUK_LOCAL void duk__json_enc_buffer_data(duk_json_enc_ctx *js_ctx, duk_uint8_t *buf_data, duk_size_t buf_len) { - duk_hthread *thr; - duk_uint8_t *q; - duk_size_t space; - - thr = js_ctx->thr; - - DUK_ASSERT(js_ctx->flag_ext_custom || js_ctx->flag_ext_compatible); /* caller checks */ - DUK_ASSERT(js_ctx->flag_ext_custom_or_compatible); - - /* Buffer values are encoded in (lowercase) hex to make the - * binary data readable. Base64 or similar would be more - * compact but less readable, and the point of JX/JC - * variants is to be as useful to a programmer as possible. - */ - - /* The #if defined() clutter here needs to handle the three - * cases: (1) JX+JC, (2) JX only, (3) JC only. - */ - - /* Note: space must cater for both JX and JC. */ - space = 9 + buf_len * 2 + 2; - DUK_ASSERT(DUK_HBUFFER_MAX_BYTELEN <= 0x7ffffffeUL); - DUK_ASSERT((space - 2) / 2 >= buf_len); /* overflow not possible, buffer limits */ - q = DUK_BW_ENSURE_GETPTR(thr, &js_ctx->bw, space); - -#if defined(DUK_USE_JX) && defined(DUK_USE_JC) - if (js_ctx->flag_ext_custom) -#endif -#if defined(DUK_USE_JX) - { - *q++ = DUK_ASC_PIPE; - q = duk__json_enc_buffer_data_hex(buf_data, buf_len, q); - *q++ = DUK_ASC_PIPE; - - } -#endif -#if defined(DUK_USE_JX) && defined(DUK_USE_JC) - else -#endif -#if defined(DUK_USE_JC) - { - DUK_ASSERT(js_ctx->flag_ext_compatible); - duk_memcpy((void *) q, (const void *) "{\"_buf\":\"", 9); /* len: 9 */ - q += 9; - q = duk__json_enc_buffer_data_hex(buf_data, buf_len, q); - *q++ = DUK_ASC_DOUBLEQUOTE; - *q++ = DUK_ASC_RCURLY; - } -#endif - - DUK_BW_SET_PTR(thr, &js_ctx->bw, q); -} - -DUK_LOCAL void duk__json_enc_buffer_jx_jc(duk_json_enc_ctx *js_ctx, duk_hbuffer *h) { - duk__json_enc_buffer_data(js_ctx, - (duk_uint8_t *) DUK_HBUFFER_GET_DATA_PTR(js_ctx->thr->heap, h), - (duk_size_t) DUK_HBUFFER_GET_SIZE(h)); -} -#endif /* DUK_USE_JX || DUK_USE_JC */ - -#if defined(DUK_USE_JSON_STRINGIFY_FASTPATH) -DUK_LOCAL void duk__json_enc_buffer_json_fastpath(duk_json_enc_ctx *js_ctx, duk_hbuffer *h) { - duk_size_t i, n; - const duk_uint8_t *buf; - duk_uint8_t *q; - - n = DUK_HBUFFER_GET_SIZE(h); - if (n == 0) { - DUK__EMIT_2(js_ctx, DUK_ASC_LCURLY, DUK_ASC_RCURLY); - return; - } - - DUK__EMIT_1(js_ctx, DUK_ASC_LCURLY); - - /* Maximum encoded length with 32-bit index: 1 + 10 + 2 + 3 + 1 + 1 = 18, - * with 64-bit index: 1 + 20 + 2 + 3 + 1 + 1 = 28. 32 has some slack. - * - * Note that because the output buffer is reallocated from time to time, - * side effects (such as finalizers) affecting the buffer 'h' must be - * disabled. This is the case in the JSON.stringify() fast path. - */ - - buf = (const duk_uint8_t *) DUK_HBUFFER_GET_DATA_PTR(js_ctx->thr->heap, h); - if (DUK_UNLIKELY(js_ctx->h_gap != NULL)) { - for (i = 0; i < n; i++) { - duk__json_enc_newline_indent(js_ctx, js_ctx->recursion_depth + 1); - q = DUK_BW_ENSURE_GETPTR(js_ctx->thr, &js_ctx->bw, 32); - q += DUK_SPRINTF((char *) q, "\"%lu\": %u,", (unsigned long) i, (unsigned int) buf[i]); - DUK_BW_SET_PTR(js_ctx->thr, &js_ctx->bw, q); - } - } else { - q = DUK_BW_GET_PTR(js_ctx->thr, &js_ctx->bw); - for (i = 0; i < n; i++) { - q = DUK_BW_ENSURE_RAW(js_ctx->thr, &js_ctx->bw, 32, q); - q += DUK_SPRINTF((char *) q, "\"%lu\":%u,", (unsigned long) i, (unsigned int) buf[i]); - } - DUK_BW_SET_PTR(js_ctx->thr, &js_ctx->bw, q); - } - DUK__UNEMIT_1(js_ctx); /* eat trailing comma */ - - if (DUK_UNLIKELY(js_ctx->h_gap != NULL)) { - duk__json_enc_newline_indent(js_ctx, js_ctx->recursion_depth); - } - DUK__EMIT_1(js_ctx, DUK_ASC_RCURLY); -} -#endif /* DUK_USE_JSON_STRINGIFY_FASTPATH */ - -#if defined(DUK_USE_JX) || defined(DUK_USE_JC) -DUK_LOCAL void duk__json_enc_pointer(duk_json_enc_ctx *js_ctx, void *ptr) { - char buf[64]; /* XXX: how to figure correct size? */ - const char *fmt; - - DUK_ASSERT(js_ctx->flag_ext_custom || js_ctx->flag_ext_compatible); /* caller checks */ - DUK_ASSERT(js_ctx->flag_ext_custom_or_compatible); - - duk_memzero(buf, sizeof(buf)); - - /* The #if defined() clutter here needs to handle the three - * cases: (1) JX+JC, (2) JX only, (3) JC only. - */ -#if defined(DUK_USE_JX) && defined(DUK_USE_JC) - if (js_ctx->flag_ext_custom) -#endif -#if defined(DUK_USE_JX) - { - fmt = ptr ? "(%p)" : "(null)"; - } -#endif -#if defined(DUK_USE_JX) && defined(DUK_USE_JC) - else -#endif -#if defined(DUK_USE_JC) - { - DUK_ASSERT(js_ctx->flag_ext_compatible); - fmt = ptr ? "{\"_ptr\":\"%p\"}" : "{\"_ptr\":\"null\"}"; - } -#endif - - /* When ptr == NULL, the format argument is unused. */ - DUK_SNPRINTF(buf, sizeof(buf) - 1, fmt, ptr); /* must not truncate */ - DUK__EMIT_CSTR(js_ctx, buf); -} -#endif /* DUK_USE_JX || DUK_USE_JC */ - -#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) -#if defined(DUK_USE_JX) || defined(DUK_USE_JC) -DUK_LOCAL void duk__json_enc_bufobj(duk_json_enc_ctx *js_ctx, duk_hbufobj *h_bufobj) { - DUK_HBUFOBJ_ASSERT_VALID(h_bufobj); - - if (h_bufobj->buf == NULL || !DUK_HBUFOBJ_VALID_SLICE(h_bufobj)) { - DUK__EMIT_STRIDX(js_ctx, DUK_STRIDX_LC_NULL); - } else { - /* Handle both full and partial slice (as long as covered). */ - duk__json_enc_buffer_data(js_ctx, - (duk_uint8_t *) DUK_HBUFOBJ_GET_SLICE_BASE(js_ctx->thr->heap, h_bufobj), - (duk_size_t) h_bufobj->length); - } -} -#endif /* DUK_USE_JX || DUK_USE_JC */ -#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ - -/* Indent helper. Calling code relies on js_ctx->recursion_depth also being - * directly related to indent depth. - */ -#if defined(DUK_USE_PREFER_SIZE) -DUK_LOCAL void duk__json_enc_newline_indent(duk_json_enc_ctx *js_ctx, duk_uint_t depth) { - DUK_ASSERT(js_ctx->h_gap != NULL); - DUK_ASSERT(DUK_HSTRING_GET_BYTELEN(js_ctx->h_gap) > 0); /* caller guarantees */ - - DUK__EMIT_1(js_ctx, 0x0a); - while (depth-- > 0) { - DUK__EMIT_HSTR(js_ctx, js_ctx->h_gap); - } -} -#else /* DUK_USE_PREFER_SIZE */ -DUK_LOCAL void duk__json_enc_newline_indent(duk_json_enc_ctx *js_ctx, duk_uint_t depth) { - const duk_uint8_t *gap_data; - duk_size_t gap_len; - duk_size_t avail_bytes; /* bytes of indent available for copying */ - duk_size_t need_bytes; /* bytes of indent still needed */ - duk_uint8_t *p_start; - duk_uint8_t *p; - - DUK_ASSERT(js_ctx->h_gap != NULL); - DUK_ASSERT(DUK_HSTRING_GET_BYTELEN(js_ctx->h_gap) > 0); /* caller guarantees */ - - DUK__EMIT_1(js_ctx, 0x0a); - if (DUK_UNLIKELY(depth == 0)) { - return; - } - - /* To handle deeper indents efficiently, make use of copies we've - * already emitted. In effect we can emit a sequence of 1, 2, 4, - * 8, etc copies, and then finish the last run. Byte counters - * avoid multiply with gap_len on every loop. - */ - - gap_data = (const duk_uint8_t *) DUK_HSTRING_GET_DATA(js_ctx->h_gap); - gap_len = (duk_size_t) DUK_HSTRING_GET_BYTELEN(js_ctx->h_gap); - DUK_ASSERT(gap_len > 0); - - need_bytes = gap_len * depth; - p = DUK_BW_ENSURE_GETPTR(js_ctx->thr, &js_ctx->bw, need_bytes); - p_start = p; - - duk_memcpy((void *) p, (const void *) gap_data, (size_t) gap_len); - p += gap_len; - avail_bytes = gap_len; - DUK_ASSERT(need_bytes >= gap_len); - need_bytes -= gap_len; - - while (need_bytes >= avail_bytes) { - duk_memcpy((void *) p, (const void *) p_start, (size_t) avail_bytes); - p += avail_bytes; - need_bytes -= avail_bytes; - avail_bytes <<= 1; - } - - DUK_ASSERT(need_bytes < avail_bytes); /* need_bytes may be zero */ - duk_memcpy((void *) p, (const void *) p_start, (size_t) need_bytes); - p += need_bytes; - /*avail_bytes += need_bytes*/ - - DUK_BW_SET_PTR(js_ctx->thr, &js_ctx->bw, p); -} -#endif /* DUK_USE_PREFER_SIZE */ - -/* Shared entry handling for object/array serialization. */ -DUK_LOCAL void duk__json_enc_objarr_entry(duk_json_enc_ctx *js_ctx, duk_idx_t *entry_top) { - duk_hthread *thr = js_ctx->thr; - duk_hobject *h_target; - duk_uint_fast32_t i, n; - - *entry_top = duk_get_top(thr); - - duk_native_stack_check(thr); - duk_require_stack(thr, DUK_JSON_ENC_REQSTACK); - - /* Loop check using a hybrid approach: a fixed-size visited[] array - * with overflow in a loop check object. - */ - - h_target = duk_known_hobject(thr, -1); /* object or array */ - - n = js_ctx->recursion_depth; - if (DUK_UNLIKELY(n > DUK_JSON_ENC_LOOPARRAY)) { - n = DUK_JSON_ENC_LOOPARRAY; - } - for (i = 0; i < n; i++) { - if (DUK_UNLIKELY(js_ctx->visiting[i] == h_target)) { - DUK_DD(DUK_DDPRINT("slow path loop detect")); - DUK_ERROR_TYPE(thr, DUK_STR_CYCLIC_INPUT); - DUK_WO_NORETURN(return;); - } - } - if (js_ctx->recursion_depth < DUK_JSON_ENC_LOOPARRAY) { - js_ctx->visiting[js_ctx->recursion_depth] = h_target; - } else { - duk_push_sprintf(thr, DUK_STR_FMT_PTR, (void *) h_target); - duk_dup_top(thr); /* -> [ ... voidp voidp ] */ - if (duk_has_prop(thr, js_ctx->idx_loop)) { - DUK_ERROR_TYPE(thr, DUK_STR_CYCLIC_INPUT); - DUK_WO_NORETURN(return;); - } - duk_push_true(thr); /* -> [ ... voidp true ] */ - duk_put_prop(thr, js_ctx->idx_loop); /* -> [ ... ] */ - } - - /* C recursion check. */ - - DUK_ASSERT_DISABLE(js_ctx->recursion_depth >= 0); /* unsigned */ - DUK_ASSERT(js_ctx->recursion_depth <= js_ctx->recursion_limit); - if (js_ctx->recursion_depth >= js_ctx->recursion_limit) { - DUK_ERROR_RANGE(thr, DUK_STR_ENC_RECLIMIT); - DUK_WO_NORETURN(return;); - } - js_ctx->recursion_depth++; - - DUK_DDD(DUK_DDDPRINT("shared entry finished: top=%ld, loop=%!T", - (long) duk_get_top(thr), - (duk_tval *) duk_get_tval(thr, js_ctx->idx_loop))); -} - -/* Shared exit handling for object/array serialization. */ -DUK_LOCAL void duk__json_enc_objarr_exit(duk_json_enc_ctx *js_ctx, duk_idx_t *entry_top) { - duk_hthread *thr = js_ctx->thr; - duk_hobject *h_target; - - /* C recursion check. */ - - DUK_ASSERT(js_ctx->recursion_depth > 0); - DUK_ASSERT(js_ctx->recursion_depth <= js_ctx->recursion_limit); - js_ctx->recursion_depth--; - - /* Loop check. */ - - h_target = duk_known_hobject(thr, *entry_top - 1); /* original target at entry_top - 1 */ - - if (js_ctx->recursion_depth < DUK_JSON_ENC_LOOPARRAY) { - /* Previous entry was inside visited[], nothing to do. */ - } else { - duk_push_sprintf(thr, DUK_STR_FMT_PTR, (void *) h_target); - duk_del_prop(thr, js_ctx->idx_loop); /* -> [ ... ] */ - } - - /* Restore stack top after unbalanced code paths. */ - duk_set_top(thr, *entry_top); - - DUK_DDD(DUK_DDDPRINT("shared entry finished: top=%ld, loop=%!T", - (long) duk_get_top(thr), - (duk_tval *) duk_get_tval(thr, js_ctx->idx_loop))); -} - -/* The JO(value) operation: encode object. - * - * Stack policy: [ object ] -> [ object ]. - */ -DUK_LOCAL void duk__json_enc_object(duk_json_enc_ctx *js_ctx) { - duk_hthread *thr = js_ctx->thr; - duk_hstring *h_key; - duk_idx_t entry_top; - duk_idx_t idx_obj; - duk_idx_t idx_keys; - duk_bool_t emitted; - duk_uarridx_t arr_len, i; - duk_size_t prev_size; - - DUK_DDD(DUK_DDDPRINT("duk__json_enc_object: obj=%!T", (duk_tval *) duk_get_tval(thr, -1))); - - duk__json_enc_objarr_entry(js_ctx, &entry_top); - - idx_obj = entry_top - 1; - - if (js_ctx->idx_proplist >= 0) { - idx_keys = js_ctx->idx_proplist; - } else { - /* XXX: would be nice to enumerate an object at specified index */ - duk_dup(thr, idx_obj); - (void) duk_hobject_get_enumerated_keys( - thr, - DUK_ENUM_OWN_PROPERTIES_ONLY /*flags*/); /* [ ... target ] -> [ ... target keys ] */ - idx_keys = duk_require_normalize_index(thr, -1); - /* leave stack unbalanced on purpose */ - } - - DUK_DDD(DUK_DDDPRINT("idx_keys=%ld, h_keys=%!T", (long) idx_keys, (duk_tval *) duk_get_tval(thr, idx_keys))); - - /* Steps 8-10 have been merged to avoid a "partial" variable. */ - - DUK__EMIT_1(js_ctx, DUK_ASC_LCURLY); - - /* XXX: keys is an internal object with all keys to be processed - * in its (gapless) array part. Because nobody can touch the keys - * object, we could iterate its array part directly (keeping in mind - * that it can be reallocated). - */ - - arr_len = (duk_uarridx_t) duk_get_length(thr, idx_keys); - emitted = 0; - for (i = 0; i < arr_len; i++) { - duk_get_prop_index(thr, idx_keys, i); /* -> [ ... key ] */ - - DUK_DDD(DUK_DDDPRINT("object property loop: holder=%!T, key=%!T", - (duk_tval *) duk_get_tval(thr, idx_obj), - (duk_tval *) duk_get_tval(thr, -1))); - - h_key = duk_known_hstring(thr, -1); - DUK_ASSERT(h_key != NULL); - DUK_ASSERT(!DUK_HSTRING_HAS_SYMBOL(h_key)); /* proplist filtering; enum options */ - - prev_size = DUK_BW_GET_SIZE(js_ctx->thr, &js_ctx->bw); - if (DUK_UNLIKELY(js_ctx->h_gap != NULL)) { - duk__json_enc_newline_indent(js_ctx, js_ctx->recursion_depth); - duk__json_enc_key_autoquote(js_ctx, h_key); - DUK__EMIT_2(js_ctx, DUK_ASC_COLON, DUK_ASC_SPACE); - } else { - duk__json_enc_key_autoquote(js_ctx, h_key); - DUK__EMIT_1(js_ctx, DUK_ASC_COLON); - } - - /* [ ... key ] */ - - if (DUK_UNLIKELY(duk__json_enc_value(js_ctx, idx_obj) == 0)) { - /* Value would yield 'undefined', so skip key altogether. - * Side effects have already happened. - */ - DUK_BW_SET_SIZE(js_ctx->thr, &js_ctx->bw, prev_size); - } else { - DUK__EMIT_1(js_ctx, DUK_ASC_COMMA); - emitted = 1; - } - - /* [ ... ] */ - } - - if (emitted) { - DUK_ASSERT(*((duk_uint8_t *) DUK_BW_GET_PTR(js_ctx->thr, &js_ctx->bw) - 1) == DUK_ASC_COMMA); - DUK__UNEMIT_1(js_ctx); /* eat trailing comma */ - if (DUK_UNLIKELY(js_ctx->h_gap != NULL)) { - DUK_ASSERT(js_ctx->recursion_depth >= 1); - duk__json_enc_newline_indent(js_ctx, js_ctx->recursion_depth - 1U); - } - } - DUK__EMIT_1(js_ctx, DUK_ASC_RCURLY); - - duk__json_enc_objarr_exit(js_ctx, &entry_top); - - DUK_ASSERT_TOP(thr, entry_top); -} - -/* The JA(value) operation: encode array. - * - * Stack policy: [ array ] -> [ array ]. - */ -DUK_LOCAL void duk__json_enc_array(duk_json_enc_ctx *js_ctx) { - duk_hthread *thr = js_ctx->thr; - duk_idx_t entry_top; - duk_idx_t idx_arr; - duk_bool_t emitted; - duk_uarridx_t i, arr_len; - - DUK_DDD(DUK_DDDPRINT("duk__json_enc_array: array=%!T", (duk_tval *) duk_get_tval(thr, -1))); - - duk__json_enc_objarr_entry(js_ctx, &entry_top); - - idx_arr = entry_top - 1; - - /* Steps 8-10 have been merged to avoid a "partial" variable. */ - - DUK__EMIT_1(js_ctx, DUK_ASC_LBRACKET); - - arr_len = (duk_uarridx_t) duk_get_length(thr, idx_arr); - emitted = 0; - for (i = 0; i < arr_len; i++) { - DUK_DDD(DUK_DDDPRINT("array entry loop: array=%!T, index=%ld, arr_len=%ld", - (duk_tval *) duk_get_tval(thr, idx_arr), - (long) i, - (long) arr_len)); - - if (DUK_UNLIKELY(js_ctx->h_gap != NULL)) { - DUK_ASSERT(js_ctx->recursion_depth >= 1); - duk__json_enc_newline_indent(js_ctx, js_ctx->recursion_depth); - } - - (void) duk_push_uint_to_hstring(thr, (duk_uint_t) i); /* -> [ ... key ] */ - - /* [ ... key ] */ - - if (DUK_UNLIKELY(duk__json_enc_value(js_ctx, idx_arr) == 0)) { - /* Value would normally be omitted, replace with 'null'. */ - DUK__EMIT_STRIDX(js_ctx, DUK_STRIDX_LC_NULL); - } else { - ; - } - - /* [ ... ] */ - - DUK__EMIT_1(js_ctx, DUK_ASC_COMMA); - emitted = 1; - } - - if (emitted) { - DUK_ASSERT(*((duk_uint8_t *) DUK_BW_GET_PTR(js_ctx->thr, &js_ctx->bw) - 1) == DUK_ASC_COMMA); - DUK__UNEMIT_1(js_ctx); /* eat trailing comma */ - if (DUK_UNLIKELY(js_ctx->h_gap != NULL)) { - DUK_ASSERT(js_ctx->recursion_depth >= 1); - duk__json_enc_newline_indent(js_ctx, js_ctx->recursion_depth - 1U); - } - } - DUK__EMIT_1(js_ctx, DUK_ASC_RBRACKET); - - duk__json_enc_objarr_exit(js_ctx, &entry_top); - - DUK_ASSERT_TOP(thr, entry_top); -} - -/* The Str(key, holder) operation. - * - * Stack policy: [ ... key ] -> [ ... ] - */ -DUK_LOCAL duk_bool_t duk__json_enc_value(duk_json_enc_ctx *js_ctx, duk_idx_t idx_holder) { - duk_hthread *thr = js_ctx->thr; - duk_tval *tv; - duk_tval *tv_holder; - duk_tval *tv_key; - duk_small_int_t c; - - DUK_DDD(DUK_DDDPRINT("duk__json_enc_value: idx_holder=%ld, holder=%!T, key=%!T", - (long) idx_holder, - (duk_tval *) duk_get_tval(thr, idx_holder), - (duk_tval *) duk_get_tval(thr, -1))); - - tv_holder = DUK_GET_TVAL_POSIDX(thr, idx_holder); - DUK_ASSERT(DUK_TVAL_IS_OBJECT(tv_holder)); - tv_key = DUK_GET_TVAL_NEGIDX(thr, -1); - DUK_ASSERT(DUK_TVAL_IS_STRING(tv_key)); - DUK_ASSERT(!DUK_HSTRING_HAS_SYMBOL(DUK_TVAL_GET_STRING(tv_key))); /* Caller responsible. */ - (void) duk_hobject_getprop(thr, tv_holder, tv_key); - - /* -> [ ... key val ] */ - - DUK_DDD(DUK_DDDPRINT("value=%!T", (duk_tval *) duk_get_tval(thr, -1))); - - /* Standard JSON checks for .toJSON() only for actual objects; for - * example, setting Number.prototype.toJSON and then serializing a - * number won't invoke the .toJSON() method. However, lightfuncs and - * plain buffers mimic objects so we check for their .toJSON() method. - */ - if (duk_check_type_mask(thr, -1, DUK_TYPE_MASK_OBJECT | DUK_TYPE_MASK_LIGHTFUNC | DUK_TYPE_MASK_BUFFER)) { - duk_get_prop_stridx_short(thr, -1, DUK_STRIDX_TO_JSON); - if (duk_is_callable(thr, -1)) { /* toJSON() can also be a lightfunc */ - DUK_DDD(DUK_DDDPRINT("value is object, has callable toJSON() -> call it")); - /* XXX: duk_dup_unvalidated(thr, -2) etc. */ - duk_dup_m2(thr); /* -> [ ... key val toJSON val ] */ - duk_dup_m4(thr); /* -> [ ... key val toJSON val key ] */ - duk_call_method(thr, 1); /* -> [ ... key val val' ] */ - duk_remove_m2(thr); /* -> [ ... key val' ] */ - } else { - duk_pop(thr); /* -> [ ... key val ] */ - } - } - - /* [ ... key val ] */ - - DUK_DDD(DUK_DDDPRINT("value=%!T", (duk_tval *) duk_get_tval(thr, -1))); - - if (js_ctx->h_replacer) { - /* XXX: Here a "slice copy" would be useful. */ - DUK_DDD(DUK_DDDPRINT("replacer is set, call replacer")); - duk_push_hobject(thr, js_ctx->h_replacer); /* -> [ ... key val replacer ] */ - duk_dup(thr, idx_holder); /* -> [ ... key val replacer holder ] */ - duk_dup_m4(thr); /* -> [ ... key val replacer holder key ] */ - duk_dup_m4(thr); /* -> [ ... key val replacer holder key val ] */ - duk_call_method(thr, 2); /* -> [ ... key val val' ] */ - duk_remove_m2(thr); /* -> [ ... key val' ] */ - } - - /* [ ... key val ] */ - - DUK_DDD(DUK_DDDPRINT("value=%!T", (duk_tval *) duk_get_tval(thr, -1))); - - tv = DUK_GET_TVAL_NEGIDX(thr, -1); - if (DUK_TVAL_IS_OBJECT(tv)) { - duk_hobject *h; - - h = DUK_TVAL_GET_OBJECT(tv); - DUK_ASSERT(h != NULL); - -#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) -#if defined(DUK_USE_JX) || defined(DUK_USE_JC) - if (DUK_HOBJECT_IS_BUFOBJ(h) && js_ctx->flags & (DUK_JSON_FLAG_EXT_CUSTOM | DUK_JSON_FLAG_EXT_COMPATIBLE)) { - /* With JX/JC a bufferobject gets serialized specially. */ - duk_hbufobj *h_bufobj; - h_bufobj = (duk_hbufobj *) h; - DUK_HBUFOBJ_ASSERT_VALID(h_bufobj); - duk__json_enc_bufobj(js_ctx, h_bufobj); - goto pop2_emitted; - } - /* Otherwise bufferobjects get serialized as normal objects. */ -#endif /* JX || JC */ -#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ - c = (duk_small_int_t) DUK_HOBJECT_GET_CLASS_NUMBER(h); - switch (c) { - case DUK_HOBJECT_CLASS_NUMBER: { - DUK_DDD(DUK_DDDPRINT("value is a Number object -> coerce with ToNumber()")); - duk_to_number_m1(thr); - /* The coercion potentially invokes user .valueOf() and .toString() - * but can't result in a function value because ToPrimitive() would - * reject such a result: test-dev-json-stringify-coercion-1.js. - */ - DUK_ASSERT(!duk_is_callable(thr, -1)); - break; - } - case DUK_HOBJECT_CLASS_STRING: { - DUK_DDD(DUK_DDDPRINT("value is a String object -> coerce with ToString()")); - duk_to_string(thr, -1); - /* Same coercion behavior as for Number. */ - DUK_ASSERT(!duk_is_callable(thr, -1)); - break; - } -#if defined(DUK_USE_JX) || defined(DUK_USE_JC) - case DUK_HOBJECT_CLASS_POINTER: -#endif - case DUK_HOBJECT_CLASS_BOOLEAN: { - DUK_DDD(DUK_DDDPRINT("value is a Boolean/Buffer/Pointer object -> get internal value")); - duk_xget_owndataprop_stridx_short(thr, -1, DUK_STRIDX_INT_VALUE); - duk_remove_m2(thr); - break; - } - default: { - /* Normal object which doesn't get automatically coerced to a - * primitive value. Functions are checked for specially. The - * primitive value coercions for Number, String, Pointer, and - * Boolean can't result in functions so suffices to check here. - * Symbol objects are handled like plain objects (their primitive - * value is NOT looked up like for e.g. String objects). - */ - DUK_ASSERT(h != NULL); - if (DUK_HOBJECT_IS_CALLABLE(h)) { -#if defined(DUK_USE_JX) || defined(DUK_USE_JC) - if (js_ctx->flags & (DUK_JSON_FLAG_EXT_CUSTOM | DUK_JSON_FLAG_EXT_COMPATIBLE)) { - /* We only get here when doing non-standard JSON encoding */ - DUK_DDD(DUK_DDDPRINT("-> function allowed, serialize to custom format")); - DUK_ASSERT(js_ctx->flag_ext_custom || js_ctx->flag_ext_compatible); - DUK__EMIT_STRIDX(js_ctx, js_ctx->stridx_custom_function); - goto pop2_emitted; - } else { - DUK_DDD(DUK_DDDPRINT("-> will result in undefined (function)")); - goto pop2_undef; - } -#else /* DUK_USE_JX || DUK_USE_JC */ - DUK_DDD(DUK_DDDPRINT("-> will result in undefined (function)")); - goto pop2_undef; -#endif /* DUK_USE_JX || DUK_USE_JC */ - } - } - } /* end switch */ - } - - /* [ ... key val ] */ - - DUK_DDD(DUK_DDDPRINT("value=%!T", (duk_tval *) duk_get_tval(thr, -1))); - - if (duk_check_type_mask(thr, -1, js_ctx->mask_for_undefined)) { - /* will result in undefined */ - DUK_DDD(DUK_DDDPRINT("-> will result in undefined (type mask check)")); - goto pop2_undef; - } - tv = DUK_GET_TVAL_NEGIDX(thr, -1); - - switch (DUK_TVAL_GET_TAG(tv)) { -#if defined(DUK_USE_JX) || defined(DUK_USE_JC) - /* When JX/JC not in use, the type mask above will avoid this case if needed. */ - case DUK_TAG_UNDEFINED: { - DUK__EMIT_STRIDX(js_ctx, js_ctx->stridx_custom_undefined); - break; - } -#endif - case DUK_TAG_NULL: { - DUK__EMIT_STRIDX(js_ctx, DUK_STRIDX_LC_NULL); - break; - } - case DUK_TAG_BOOLEAN: { - DUK__EMIT_STRIDX(js_ctx, DUK_TVAL_GET_BOOLEAN(tv) ? DUK_STRIDX_TRUE : DUK_STRIDX_FALSE); - break; - } -#if defined(DUK_USE_JX) || defined(DUK_USE_JC) - /* When JX/JC not in use, the type mask above will avoid this case if needed. */ - case DUK_TAG_POINTER: { - duk__json_enc_pointer(js_ctx, DUK_TVAL_GET_POINTER(tv)); - break; - } -#endif /* DUK_USE_JX || DUK_USE_JC */ - case DUK_TAG_STRING: { - duk_hstring *h = DUK_TVAL_GET_STRING(tv); - DUK_ASSERT(h != NULL); - if (DUK_UNLIKELY(DUK_HSTRING_HAS_SYMBOL(h))) { - goto pop2_undef; - } - duk__json_enc_quote_string(js_ctx, h); - break; - } - case DUK_TAG_OBJECT: { - duk_hobject *h = DUK_TVAL_GET_OBJECT(tv); - DUK_ASSERT(h != NULL); - - /* Function values are handled completely above (including - * coercion results): - */ - DUK_ASSERT(!DUK_HOBJECT_IS_CALLABLE(h)); - - if (duk_js_isarray_hobject(h)) { - duk__json_enc_array(js_ctx); - } else { - duk__json_enc_object(js_ctx); - } - break; - } - /* Because plain buffers mimics Uint8Array, they have enumerable - * index properties [0,byteLength[. Because JSON only serializes - * enumerable own properties, no properties can be serialized for - * plain buffers (all virtual properties are non-enumerable). However, - * there may be a .toJSON() method which was already handled above. - */ - case DUK_TAG_BUFFER: { -#if defined(DUK_USE_JX) || defined(DUK_USE_JC) - if (js_ctx->flag_ext_custom_or_compatible) { - duk__json_enc_buffer_jx_jc(js_ctx, DUK_TVAL_GET_BUFFER(tv)); - break; - } -#endif - - /* Could implement a fastpath, but the fast path would need - * to handle realloc side effects correctly. - */ - duk_to_object(thr, -1); - duk__json_enc_object(js_ctx); - break; - } - case DUK_TAG_LIGHTFUNC: { -#if defined(DUK_USE_JX) || defined(DUK_USE_JC) - /* We only get here when doing non-standard JSON encoding */ - DUK_ASSERT(js_ctx->flag_ext_custom || js_ctx->flag_ext_compatible); - DUK__EMIT_STRIDX(js_ctx, js_ctx->stridx_custom_function); -#else - /* Standard JSON omits functions */ - DUK_UNREACHABLE(); -#endif - break; - } -#if defined(DUK_USE_FASTINT) - case DUK_TAG_FASTINT: - /* Number serialization has a significant impact relative to - * other fast path code, so careful fast path for fastints. - */ - duk__json_enc_fastint_tval(js_ctx, tv); - break; -#endif - default: { - /* number */ - DUK_ASSERT(!DUK_TVAL_IS_UNUSED(tv)); - DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv)); - /* XXX: A fast path for usual integers would be useful when - * fastint support is not enabled. - */ - duk__json_enc_double(js_ctx); - break; - } - } - -#if defined(DUK_USE_JX) || defined(DUK_USE_JC) -pop2_emitted: -#endif - duk_pop_2(thr); /* [ ... key val ] -> [ ... ] */ - return 1; /* emitted */ - -pop2_undef: - duk_pop_2(thr); /* [ ... key val ] -> [ ... ] */ - return 0; /* not emitted */ -} - -/* E5 Section 15.12.3, main algorithm, step 4.b.ii steps 1-4. */ -DUK_LOCAL duk_bool_t duk__json_enc_allow_into_proplist(duk_tval *tv) { - duk_small_int_t c; - - /* XXX: some kind of external internal type checker? - * - type mask; symbol flag; class mask - */ - DUK_ASSERT(tv != NULL); - if (DUK_TVAL_IS_STRING(tv)) { - duk_hstring *h; - h = DUK_TVAL_GET_STRING(tv); - DUK_ASSERT(h != NULL); - if (DUK_UNLIKELY(DUK_HSTRING_HAS_SYMBOL(h))) { - return 0; - } - return 1; - } else if (DUK_TVAL_IS_NUMBER(tv)) { - return 1; - } else if (DUK_TVAL_IS_OBJECT(tv)) { - duk_hobject *h; - h = DUK_TVAL_GET_OBJECT(tv); - DUK_ASSERT(h != NULL); - c = (duk_small_int_t) DUK_HOBJECT_GET_CLASS_NUMBER(h); - if (c == DUK_HOBJECT_CLASS_STRING || c == DUK_HOBJECT_CLASS_NUMBER) { - return 1; - } - } - - return 0; -} - -/* - * JSON.stringify() fast path - * - * Otherwise supports full JSON, JX, and JC features, but bails out on any - * possible side effect which might change the value being serialized. The - * fast path can take advantage of the fact that the value being serialized - * is unchanged so that we can walk directly through property tables etc. - */ - -#if defined(DUK_USE_JSON_STRINGIFY_FASTPATH) -DUK_LOCAL duk_bool_t duk__json_stringify_fast_value(duk_json_enc_ctx *js_ctx, duk_tval *tv) { - duk_uint_fast32_t i, n; - - DUK_DDD(DUK_DDDPRINT("stringify fast: %!T", tv)); - - DUK_ASSERT(js_ctx != NULL); - DUK_ASSERT(js_ctx->thr != NULL); - -#if 0 /* disabled for now */ - restart_match: -#endif - - DUK_ASSERT(tv != NULL); - - switch (DUK_TVAL_GET_TAG(tv)) { - case DUK_TAG_UNDEFINED: { -#if defined(DUK_USE_JX) || defined(DUK_USE_JC) - if (js_ctx->flag_ext_custom || js_ctx->flag_ext_compatible) { - DUK__EMIT_STRIDX(js_ctx, js_ctx->stridx_custom_undefined); - break; - } else { - goto emit_undefined; - } -#else - goto emit_undefined; -#endif - } - case DUK_TAG_NULL: { - DUK__EMIT_STRIDX(js_ctx, DUK_STRIDX_LC_NULL); - break; - } - case DUK_TAG_BOOLEAN: { - DUK__EMIT_STRIDX(js_ctx, DUK_TVAL_GET_BOOLEAN(tv) ? DUK_STRIDX_TRUE : DUK_STRIDX_FALSE); - break; - } - case DUK_TAG_STRING: { - duk_hstring *h; - h = DUK_TVAL_GET_STRING(tv); - DUK_ASSERT(h != NULL); - if (DUK_UNLIKELY(DUK_HSTRING_HAS_SYMBOL(h))) { - goto emit_undefined; - } - duk__json_enc_quote_string(js_ctx, h); - break; - } - case DUK_TAG_OBJECT: { - duk_hobject *obj; - duk_tval *tv_val; - duk_bool_t emitted = 0; - duk_uint32_t c_bit, c_all, c_array, c_unbox, c_undef, c_func, c_bufobj, c_object, c_abort; - - /* For objects JSON.stringify() only looks for own, enumerable - * properties which is nice for the fast path here. - * - * For arrays JSON.stringify() uses [[Get]] so it will actually - * inherit properties during serialization! This fast path - * supports gappy arrays as long as there's no actual inherited - * property (which might be a getter etc). - * - * Since recursion only happens for objects, we can have both - * recursion and loop checks here. We use a simple, depth-limited - * loop check in the fast path because the object-based tracking - * is very slow (when tested, it accounted for 50% of fast path - * execution time for input data with a lot of small objects!). - */ - - /* XXX: for real world code, could just ignore array inheritance - * and only look at array own properties. - */ - - /* We rely on a few object flag / class number relationships here, - * assert for them. - */ - - obj = DUK_TVAL_GET_OBJECT(tv); - DUK_ASSERT(obj != NULL); - DUK_HOBJECT_ASSERT_VALID(obj); - - /* Once recursion depth is increased, exit path must decrease - * it (though it's OK to abort the fast path). - */ - - DUK_ASSERT_DISABLE(js_ctx->recursion_depth >= 0); /* unsigned */ - DUK_ASSERT(js_ctx->recursion_depth <= js_ctx->recursion_limit); - if (js_ctx->recursion_depth >= js_ctx->recursion_limit) { - DUK_DD(DUK_DDPRINT("fast path recursion limit")); - DUK_ERROR_RANGE(js_ctx->thr, DUK_STR_DEC_RECLIMIT); - DUK_WO_NORETURN(return 0;); - } - - for (i = 0, n = (duk_uint_fast32_t) js_ctx->recursion_depth; i < n; i++) { - if (DUK_UNLIKELY(js_ctx->visiting[i] == obj)) { - DUK_DD(DUK_DDPRINT("fast path loop detect")); - DUK_ERROR_TYPE(js_ctx->thr, DUK_STR_CYCLIC_INPUT); - DUK_WO_NORETURN(return 0;); - } - } - - /* Guaranteed by recursion_limit setup so we don't have to - * check twice. - */ - DUK_ASSERT(js_ctx->recursion_depth < DUK_JSON_ENC_LOOPARRAY); - js_ctx->visiting[js_ctx->recursion_depth] = obj; - js_ctx->recursion_depth++; - - /* If object has a .toJSON() property, we can't be certain - * that it wouldn't mutate any value arbitrarily, so bail - * out of the fast path. - * - * If an object is a Proxy we also can't avoid side effects - * so abandon. - */ - /* XXX: non-callable .toJSON() doesn't need to cause an abort - * but does at the moment, probably not worth fixing. - */ - if (duk_hobject_hasprop_raw(js_ctx->thr, obj, DUK_HTHREAD_STRING_TO_JSON(js_ctx->thr)) || - DUK_HOBJECT_IS_PROXY(obj)) { - DUK_DD(DUK_DDPRINT("object has a .toJSON property or object is a Proxy, abort fast path")); - goto abort_fastpath; - } - - /* We could use a switch-case for the class number but it turns out - * a small if-else ladder on class masks is better. The if-ladder - * should be in order of relevancy. - */ - - /* XXX: move masks to js_ctx? they don't change during one - * fast path invocation. - */ - DUK_ASSERT(DUK_HOBJECT_CLASS_MAX <= 31); -#if defined(DUK_USE_JX) || defined(DUK_USE_JC) - if (js_ctx->flag_ext_custom_or_compatible) { - c_all = DUK_HOBJECT_CMASK_ALL; - c_array = DUK_HOBJECT_CMASK_ARRAY; - c_unbox = DUK_HOBJECT_CMASK_NUMBER | DUK_HOBJECT_CMASK_STRING | DUK_HOBJECT_CMASK_BOOLEAN | - DUK_HOBJECT_CMASK_POINTER; /* Symbols are not unboxed. */ - c_func = DUK_HOBJECT_CMASK_FUNCTION; - c_bufobj = DUK_HOBJECT_CMASK_ALL_BUFOBJS; - c_undef = 0; - c_abort = 0; - c_object = c_all & ~(c_array | c_unbox | c_func | c_bufobj | c_undef | c_abort); - } else -#endif - { - c_all = DUK_HOBJECT_CMASK_ALL; - c_array = DUK_HOBJECT_CMASK_ARRAY; - c_unbox = DUK_HOBJECT_CMASK_NUMBER | DUK_HOBJECT_CMASK_STRING | - DUK_HOBJECT_CMASK_BOOLEAN; /* Symbols are not unboxed. */ - c_func = 0; - c_bufobj = 0; - c_undef = DUK_HOBJECT_CMASK_FUNCTION | DUK_HOBJECT_CMASK_POINTER; - /* As the fast path doesn't currently properly support - * duk_hbufobj virtual properties, abort fast path if - * we encounter them in plain JSON mode. - */ - c_abort = DUK_HOBJECT_CMASK_ALL_BUFOBJS; - c_object = c_all & ~(c_array | c_unbox | c_func | c_bufobj | c_undef | c_abort); - } - - c_bit = (duk_uint32_t) DUK_HOBJECT_GET_CLASS_MASK(obj); - if (c_bit & c_object) { - /* All other object types. */ - DUK__EMIT_1(js_ctx, DUK_ASC_LCURLY); - - /* A non-Array object should not have an array part in practice. - * But since it is supported internally (and perhaps used at some - * point), check and abandon if that's the case. - */ - if (DUK_HOBJECT_HAS_ARRAY_PART(obj)) { - DUK_DD(DUK_DDPRINT("non-Array object has array part, abort fast path")); - goto abort_fastpath; - } - - for (i = 0; i < (duk_uint_fast32_t) DUK_HOBJECT_GET_ENEXT(obj); i++) { - duk_hstring *k; - duk_size_t prev_size; - - k = DUK_HOBJECT_E_GET_KEY(js_ctx->thr->heap, obj, i); - if (!k) { - continue; - } - if (DUK_HSTRING_HAS_ARRIDX(k)) { - /* If an object has array index keys we would need - * to sort them into the ES2015 enumeration order to - * be consistent with the slow path. Abort the fast - * path and handle in the slow path for now. - */ - DUK_DD(DUK_DDPRINT("property key is an array index, abort fast path")); - goto abort_fastpath; - } - if (!DUK_HOBJECT_E_SLOT_IS_ENUMERABLE(js_ctx->thr->heap, obj, i)) { - continue; - } - if (DUK_HOBJECT_E_SLOT_IS_ACCESSOR(js_ctx->thr->heap, obj, i)) { - /* Getter might have arbitrary side effects, - * so bail out. - */ - DUK_DD(DUK_DDPRINT("property is an accessor, abort fast path")); - goto abort_fastpath; - } - if (DUK_UNLIKELY(DUK_HSTRING_HAS_SYMBOL(k))) { - continue; - } - - tv_val = DUK_HOBJECT_E_GET_VALUE_TVAL_PTR(js_ctx->thr->heap, obj, i); - - prev_size = DUK_BW_GET_SIZE(js_ctx->thr, &js_ctx->bw); - if (DUK_UNLIKELY(js_ctx->h_gap != NULL)) { - duk__json_enc_newline_indent(js_ctx, js_ctx->recursion_depth); - duk__json_enc_key_autoquote(js_ctx, k); - DUK__EMIT_2(js_ctx, DUK_ASC_COLON, DUK_ASC_SPACE); - } else { - duk__json_enc_key_autoquote(js_ctx, k); - DUK__EMIT_1(js_ctx, DUK_ASC_COLON); - } - - if (duk__json_stringify_fast_value(js_ctx, tv_val) == 0) { - DUK_DD(DUK_DDPRINT("prop value not supported, rewind key and colon")); - DUK_BW_SET_SIZE(js_ctx->thr, &js_ctx->bw, prev_size); - } else { - DUK__EMIT_1(js_ctx, DUK_ASC_COMMA); - emitted = 1; - } - } - - /* If any non-Array value had enumerable virtual own - * properties, they should be serialized here (actually, - * before the explicit properties). Standard types don't. - */ - - if (emitted) { - DUK_ASSERT(*((duk_uint8_t *) DUK_BW_GET_PTR(js_ctx->thr, &js_ctx->bw) - 1) == DUK_ASC_COMMA); - DUK__UNEMIT_1(js_ctx); /* eat trailing comma */ - if (DUK_UNLIKELY(js_ctx->h_gap != NULL)) { - DUK_ASSERT(js_ctx->recursion_depth >= 1); - duk__json_enc_newline_indent(js_ctx, js_ctx->recursion_depth - 1U); - } - } - DUK__EMIT_1(js_ctx, DUK_ASC_RCURLY); - } else if (c_bit & c_array) { - duk_uint_fast32_t arr_len; - duk_uint_fast32_t asize; - - DUK__EMIT_1(js_ctx, DUK_ASC_LBRACKET); - - /* Assume arrays are dense in the fast path. */ - if (!DUK_HOBJECT_HAS_ARRAY_PART(obj)) { - DUK_DD(DUK_DDPRINT("Array object is sparse, abort fast path")); - goto abort_fastpath; - } - - arr_len = (duk_uint_fast32_t) ((duk_harray *) obj)->length; - asize = (duk_uint_fast32_t) DUK_HOBJECT_GET_ASIZE(obj); - /* Array part may be larger than 'length'; if so, iterate - * only up to array 'length'. Array part may also be smaller - * than 'length' in some cases. - */ - for (i = 0; i < arr_len; i++) { - duk_tval *tv_arrval; - duk_hstring *h_tmp; - duk_bool_t has_inherited; - - if (DUK_UNLIKELY(js_ctx->h_gap != NULL)) { - duk__json_enc_newline_indent(js_ctx, js_ctx->recursion_depth); - } - - if (DUK_LIKELY(i < asize)) { - tv_arrval = DUK_HOBJECT_A_GET_VALUE_PTR(js_ctx->thr->heap, obj, i); - if (DUK_LIKELY(!DUK_TVAL_IS_UNUSED(tv_arrval))) { - /* Expected case: element is present. */ - if (duk__json_stringify_fast_value(js_ctx, tv_arrval) == 0) { - DUK__EMIT_STRIDX(js_ctx, DUK_STRIDX_LC_NULL); - } - goto elem_done; - } - } - - /* Gap in array; check for inherited property, - * bail out if one exists. This should be enough - * to support gappy arrays for all practical code. - */ - - h_tmp = duk_push_uint_to_hstring(js_ctx->thr, (duk_uint_t) i); - has_inherited = duk_hobject_hasprop_raw(js_ctx->thr, obj, h_tmp); - duk_pop(js_ctx->thr); - if (has_inherited) { - DUK_D(DUK_DPRINT("gap in array, conflicting inherited property, abort fast path")); - goto abort_fastpath; - } - - /* Ordinary gap, undefined encodes to 'null' in - * standard JSON, but JX/JC use their form for - * undefined to better preserve the typing. - */ - DUK_D(DUK_DPRINT("gap in array, no conflicting inherited property, remain on fast path")); -#if defined(DUK_USE_JX) - DUK__EMIT_STRIDX(js_ctx, js_ctx->stridx_custom_undefined); -#else - DUK__EMIT_STRIDX(js_ctx, DUK_STRIDX_LC_NULL); -#endif - /* fall through */ - - elem_done: - DUK__EMIT_1(js_ctx, DUK_ASC_COMMA); - emitted = 1; - } - - if (emitted) { - DUK_ASSERT(*((duk_uint8_t *) DUK_BW_GET_PTR(js_ctx->thr, &js_ctx->bw) - 1) == DUK_ASC_COMMA); - DUK__UNEMIT_1(js_ctx); /* eat trailing comma */ - if (DUK_UNLIKELY(js_ctx->h_gap != NULL)) { - DUK_ASSERT(js_ctx->recursion_depth >= 1); - duk__json_enc_newline_indent(js_ctx, js_ctx->recursion_depth - 1U); - } - } - DUK__EMIT_1(js_ctx, DUK_ASC_RBRACKET); - } else if (c_bit & c_unbox) { - /* Certain boxed types are required to go through - * automatic unboxing. Rely on internal value being - * sane (to avoid infinite recursion). - */ - DUK_ASSERT((c_bit & DUK_HOBJECT_CMASK_SYMBOL) == 0); /* Symbols are not unboxed. */ - -#if 1 - /* The code below is incorrect if .toString() or .valueOf() have - * have been overridden. The correct approach would be to look up - * the method(s) and if they resolve to the built-in function we - * can safely bypass it and look up the internal value directly. - * Unimplemented for now, abort fast path for boxed values. - */ - goto abort_fastpath; -#else /* disabled */ - /* Disabled until fixed, see above. */ - duk_tval *tv_internal; - - DUK_DD(DUK_DDPRINT("auto unboxing in fast path")); - - tv_internal = duk_hobject_get_internal_value_tval_ptr(js_ctx->thr->heap, obj); - DUK_ASSERT(tv_internal != NULL); - DUK_ASSERT(DUK_TVAL_IS_STRING(tv_internal) || DUK_TVAL_IS_NUMBER(tv_internal) || - DUK_TVAL_IS_BOOLEAN(tv_internal) || DUK_TVAL_IS_POINTER(tv_internal)); - - tv = tv_internal; - DUK_ASSERT(js_ctx->recursion_depth > 0); - js_ctx->recursion_depth--; /* required to keep recursion depth correct */ - goto restart_match; -#endif /* disabled */ -#if defined(DUK_USE_JX) || defined(DUK_USE_JC) - } else if (c_bit & c_func) { - DUK__EMIT_STRIDX(js_ctx, js_ctx->stridx_custom_function); -#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) - } else if (c_bit & c_bufobj) { - duk__json_enc_bufobj(js_ctx, (duk_hbufobj *) obj); -#endif -#endif - } else if (c_bit & c_abort) { - DUK_DD(DUK_DDPRINT("abort fast path for unsupported type")); - goto abort_fastpath; - } else { - DUK_ASSERT((c_bit & c_undef) != 0); - - /* Must decrease recursion depth before returning. */ - DUK_ASSERT(js_ctx->recursion_depth > 0); - DUK_ASSERT(js_ctx->recursion_depth <= js_ctx->recursion_limit); - js_ctx->recursion_depth--; - goto emit_undefined; - } - - DUK_ASSERT(js_ctx->recursion_depth > 0); - DUK_ASSERT(js_ctx->recursion_depth <= js_ctx->recursion_limit); - js_ctx->recursion_depth--; - break; - } - case DUK_TAG_BUFFER: { - /* Plain buffers are treated like Uint8Arrays: they have - * enumerable indices. Other virtual properties are not - * enumerable, and inherited properties are not serialized. - * However, there can be a replacer (not relevant here) or - * a .toJSON() method (which we need to check for explicitly). - */ - -#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) - if (duk_hobject_hasprop_raw(js_ctx->thr, - js_ctx->thr->builtins[DUK_BIDX_UINT8ARRAY_PROTOTYPE], - DUK_HTHREAD_STRING_TO_JSON(js_ctx->thr))) { - DUK_DD(DUK_DDPRINT("value is a plain buffer and there's an inherited .toJSON, abort fast path")); - goto abort_fastpath; - } -#endif - -#if defined(DUK_USE_JX) || defined(DUK_USE_JC) - if (js_ctx->flag_ext_custom_or_compatible) { - duk__json_enc_buffer_jx_jc(js_ctx, DUK_TVAL_GET_BUFFER(tv)); - break; - } -#endif - - /* Plain buffers mimic Uint8Arrays, and have enumerable index - * properties. - */ - duk__json_enc_buffer_json_fastpath(js_ctx, DUK_TVAL_GET_BUFFER(tv)); - break; - } - case DUK_TAG_POINTER: { -#if defined(DUK_USE_JX) || defined(DUK_USE_JC) - if (js_ctx->flag_ext_custom_or_compatible) { - duk__json_enc_pointer(js_ctx, DUK_TVAL_GET_POINTER(tv)); - break; - } else { - goto emit_undefined; - } -#else - goto emit_undefined; -#endif - } - case DUK_TAG_LIGHTFUNC: { - /* A lightfunc might also inherit a .toJSON() so just bail out. */ - /* XXX: Could just lookup .toJSON() and continue in fast path, - * as it would almost never be defined. - */ - DUK_DD(DUK_DDPRINT("value is a lightfunc, abort fast path")); - goto abort_fastpath; - } -#if defined(DUK_USE_FASTINT) - case DUK_TAG_FASTINT: { - /* Number serialization has a significant impact relative to - * other fast path code, so careful fast path for fastints. - */ - duk__json_enc_fastint_tval(js_ctx, tv); - break; - } -#endif - default: { - /* XXX: A fast path for usual integers would be useful when - * fastint support is not enabled. - */ - DUK_ASSERT(!DUK_TVAL_IS_UNUSED(tv)); - DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv)); - - /* XXX: Stack discipline is annoying, could be changed in numconv. */ - duk_push_tval(js_ctx->thr, tv); - duk__json_enc_double(js_ctx); - duk_pop(js_ctx->thr); - -#if 0 - /* Could also rely on native sprintf(), but it will handle - * values like NaN, Infinity, -0, exponent notation etc in - * a JSON-incompatible way. - */ - duk_double_t d; - char buf[64]; - - DUK_ASSERT(DUK_TVAL_IS_DOUBLE(tv)); - d = DUK_TVAL_GET_DOUBLE(tv); - DUK_SPRINTF(buf, "%lg", d); - DUK__EMIT_CSTR(js_ctx, buf); -#endif - } - } - return 1; /* not undefined */ - -emit_undefined: - return 0; /* value was undefined/unsupported */ - -abort_fastpath: - /* Error message doesn't matter: the error is ignored anyway. */ - DUK_DD(DUK_DDPRINT("aborting fast path")); - DUK_ERROR_INTERNAL(js_ctx->thr); - DUK_WO_NORETURN(return 0;); -} - -DUK_LOCAL duk_ret_t duk__json_stringify_fast(duk_hthread *thr, void *udata) { - duk_json_enc_ctx *js_ctx; - duk_tval *tv; - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(udata != NULL); - - js_ctx = (duk_json_enc_ctx *) udata; - DUK_ASSERT(js_ctx != NULL); - - tv = DUK_GET_TVAL_NEGIDX(thr, -1); - if (duk__json_stringify_fast_value(js_ctx, tv) == 0) { - DUK_DD(DUK_DDPRINT("top level value not supported, fail fast path")); - DUK_DCERROR_TYPE_INVALID_ARGS(thr); /* Error message is ignored, so doesn't matter. */ - } - - return 0; -} -#endif /* DUK_USE_JSON_STRINGIFY_FASTPATH */ - -/* - * Top level wrappers - */ - -DUK_INTERNAL -void duk_bi_json_parse_helper(duk_hthread *thr, duk_idx_t idx_value, duk_idx_t idx_reviver, duk_small_uint_t flags) { - duk_json_dec_ctx js_ctx_alloc; - duk_json_dec_ctx *js_ctx = &js_ctx_alloc; - duk_hstring *h_text; -#if defined(DUK_USE_ASSERTIONS) - duk_idx_t entry_top = duk_get_top(thr); -#endif - - /* negative top-relative indices not allowed now */ - DUK_ASSERT(idx_value == DUK_INVALID_INDEX || idx_value >= 0); - DUK_ASSERT(idx_reviver == DUK_INVALID_INDEX || idx_reviver >= 0); - - DUK_DDD(DUK_DDDPRINT("JSON parse start: text=%!T, reviver=%!T, flags=0x%08lx, stack_top=%ld", - (duk_tval *) duk_get_tval(thr, idx_value), - (duk_tval *) duk_get_tval(thr, idx_reviver), - (unsigned long) flags, - (long) duk_get_top(thr))); - - duk_memzero(&js_ctx_alloc, sizeof(js_ctx_alloc)); - js_ctx->thr = thr; -#if defined(DUK_USE_EXPLICIT_NULL_INIT) - /* nothing now */ -#endif - js_ctx->recursion_limit = DUK_USE_JSON_DEC_RECLIMIT; - DUK_ASSERT(js_ctx->recursion_depth == 0); - - /* Flag handling currently assumes that flags are consistent. This is OK - * because the call sites are now strictly controlled. - */ - - js_ctx->flags = flags; -#if defined(DUK_USE_JX) - js_ctx->flag_ext_custom = flags & DUK_JSON_FLAG_EXT_CUSTOM; -#endif -#if defined(DUK_USE_JC) - js_ctx->flag_ext_compatible = flags & DUK_JSON_FLAG_EXT_COMPATIBLE; -#endif -#if defined(DUK_USE_JX) || defined(DUK_USE_JC) - js_ctx->flag_ext_custom_or_compatible = flags & (DUK_JSON_FLAG_EXT_CUSTOM | DUK_JSON_FLAG_EXT_COMPATIBLE); -#endif - - h_text = duk_to_hstring(thr, idx_value); /* coerce in-place; rejects Symbols */ - DUK_ASSERT(h_text != NULL); - - /* JSON parsing code is allowed to read [p_start,p_end]: p_end is - * valid and points to the string NUL terminator (which is always - * guaranteed for duk_hstrings. - */ - js_ctx->p_start = (const duk_uint8_t *) DUK_HSTRING_GET_DATA(h_text); - js_ctx->p = js_ctx->p_start; - js_ctx->p_end = ((const duk_uint8_t *) DUK_HSTRING_GET_DATA(h_text)) + DUK_HSTRING_GET_BYTELEN(h_text); - DUK_ASSERT(*(js_ctx->p_end) == 0x00); - - duk__json_dec_value(js_ctx); /* -> [ ... value ] */ - DUK_ASSERT(js_ctx->recursion_depth == 0); - - /* Trailing whitespace has been eaten by duk__json_dec_value(), so if - * we're not at end of input here, it's a SyntaxError. - */ - - if (js_ctx->p != js_ctx->p_end) { - duk__json_dec_syntax_error(js_ctx); - } - - if (duk_is_callable(thr, idx_reviver)) { - DUK_DDD(DUK_DDDPRINT("applying reviver: %!T", (duk_tval *) duk_get_tval(thr, idx_reviver))); - - js_ctx->idx_reviver = idx_reviver; - - duk_push_object(thr); - duk_dup_m2(thr); /* -> [ ... val root val ] */ - duk_put_prop_stridx_short(thr, -2, DUK_STRIDX_EMPTY_STRING); /* default attrs ok */ - duk_push_hstring_stridx(thr, DUK_STRIDX_EMPTY_STRING); /* -> [ ... val root "" ] */ - - DUK_DDD(DUK_DDDPRINT("start reviver walk, root=%!T, name=%!T", - (duk_tval *) duk_get_tval(thr, -2), - (duk_tval *) duk_get_tval(thr, -1))); - - DUK_ASSERT(js_ctx->recursion_depth == 0); - duk__json_dec_reviver_walk(js_ctx); /* [ ... val root "" ] -> [ ... val val' ] */ - DUK_ASSERT(js_ctx->recursion_depth == 0); - duk_remove_m2(thr); /* -> [ ... val' ] */ - } else { - DUK_DDD( - DUK_DDDPRINT("reviver does not exist or is not callable: %!T", (duk_tval *) duk_get_tval(thr, idx_reviver))); - } - - /* Final result is at stack top. */ - - DUK_DDD(DUK_DDDPRINT("JSON parse end: text=%!T, reviver=%!T, flags=0x%08lx, result=%!T, stack_top=%ld", - (duk_tval *) duk_get_tval(thr, idx_value), - (duk_tval *) duk_get_tval(thr, idx_reviver), - (unsigned long) flags, - (duk_tval *) duk_get_tval(thr, -1), - (long) duk_get_top(thr))); - - DUK_ASSERT(duk_get_top(thr) == entry_top + 1); -} - -DUK_INTERNAL -void duk_bi_json_stringify_helper(duk_hthread *thr, - duk_idx_t idx_value, - duk_idx_t idx_replacer, - duk_idx_t idx_space, - duk_small_uint_t flags) { - duk_json_enc_ctx js_ctx_alloc; - duk_json_enc_ctx *js_ctx = &js_ctx_alloc; - duk_hobject *h; - duk_idx_t idx_holder; - duk_idx_t entry_top; - - /* negative top-relative indices not allowed now */ - DUK_ASSERT(idx_value == DUK_INVALID_INDEX || idx_value >= 0); - DUK_ASSERT(idx_replacer == DUK_INVALID_INDEX || idx_replacer >= 0); - DUK_ASSERT(idx_space == DUK_INVALID_INDEX || idx_space >= 0); - - DUK_DDD(DUK_DDDPRINT("JSON stringify start: value=%!T, replacer=%!T, space=%!T, flags=0x%08lx, stack_top=%ld", - (duk_tval *) duk_get_tval(thr, idx_value), - (duk_tval *) duk_get_tval(thr, idx_replacer), - (duk_tval *) duk_get_tval(thr, idx_space), - (unsigned long) flags, - (long) duk_get_top(thr))); - - entry_top = duk_get_top(thr); - - /* - * Context init - */ - - duk_memzero(&js_ctx_alloc, sizeof(js_ctx_alloc)); - js_ctx->thr = thr; -#if defined(DUK_USE_EXPLICIT_NULL_INIT) - js_ctx->h_replacer = NULL; - js_ctx->h_gap = NULL; -#endif - js_ctx->idx_proplist = -1; - - /* Flag handling currently assumes that flags are consistent. This is OK - * because the call sites are now strictly controlled. - */ - - js_ctx->flags = flags; - js_ctx->flag_ascii_only = flags & DUK_JSON_FLAG_ASCII_ONLY; - js_ctx->flag_avoid_key_quotes = flags & DUK_JSON_FLAG_AVOID_KEY_QUOTES; -#if defined(DUK_USE_JX) - js_ctx->flag_ext_custom = flags & DUK_JSON_FLAG_EXT_CUSTOM; -#endif -#if defined(DUK_USE_JC) - js_ctx->flag_ext_compatible = flags & DUK_JSON_FLAG_EXT_COMPATIBLE; -#endif -#if defined(DUK_USE_JX) || defined(DUK_USE_JC) - js_ctx->flag_ext_custom_or_compatible = flags & (DUK_JSON_FLAG_EXT_CUSTOM | DUK_JSON_FLAG_EXT_COMPATIBLE); -#endif - - /* The #if defined() clutter here handles the JX/JC enable/disable - * combinations properly. - */ -#if defined(DUK_USE_JX) || defined(DUK_USE_JC) - js_ctx->stridx_custom_undefined = DUK_STRIDX_LC_NULL; /* standard JSON; array gaps */ -#if defined(DUK_USE_JX) - if (flags & DUK_JSON_FLAG_EXT_CUSTOM) { - js_ctx->stridx_custom_undefined = DUK_STRIDX_LC_UNDEFINED; - js_ctx->stridx_custom_nan = DUK_STRIDX_NAN; - js_ctx->stridx_custom_neginf = DUK_STRIDX_MINUS_INFINITY; - js_ctx->stridx_custom_posinf = DUK_STRIDX_INFINITY; - js_ctx->stridx_custom_function = - (flags & DUK_JSON_FLAG_AVOID_KEY_QUOTES) ? DUK_STRIDX_JSON_EXT_FUNCTION2 : DUK_STRIDX_JSON_EXT_FUNCTION1; - } -#endif /* DUK_USE_JX */ -#if defined(DUK_USE_JX) && defined(DUK_USE_JC) - else -#endif /* DUK_USE_JX && DUK_USE_JC */ -#if defined(DUK_USE_JC) - if (js_ctx->flags & DUK_JSON_FLAG_EXT_COMPATIBLE) { - js_ctx->stridx_custom_undefined = DUK_STRIDX_JSON_EXT_UNDEFINED; - js_ctx->stridx_custom_nan = DUK_STRIDX_JSON_EXT_NAN; - js_ctx->stridx_custom_neginf = DUK_STRIDX_JSON_EXT_NEGINF; - js_ctx->stridx_custom_posinf = DUK_STRIDX_JSON_EXT_POSINF; - js_ctx->stridx_custom_function = DUK_STRIDX_JSON_EXT_FUNCTION1; - } -#endif /* DUK_USE_JC */ -#endif /* DUK_USE_JX || DUK_USE_JC */ - -#if defined(DUK_USE_JX) || defined(DUK_USE_JC) - if (js_ctx->flags & (DUK_JSON_FLAG_EXT_CUSTOM | DUK_JSON_FLAG_EXT_COMPATIBLE)) { - DUK_ASSERT(js_ctx->mask_for_undefined == 0); /* already zero */ - } else -#endif /* DUK_USE_JX || DUK_USE_JC */ - { - /* Plain buffer is treated like ArrayBuffer and serialized. - * Lightfuncs are treated like objects, but JSON explicitly - * skips serializing Function objects so we can just reject - * lightfuncs here. - */ - js_ctx->mask_for_undefined = DUK_TYPE_MASK_UNDEFINED | DUK_TYPE_MASK_POINTER | DUK_TYPE_MASK_LIGHTFUNC; - } - - DUK_BW_INIT_PUSHBUF(thr, &js_ctx->bw, DUK__JSON_STRINGIFY_BUFSIZE); - - js_ctx->idx_loop = duk_push_bare_object(thr); - DUK_ASSERT(js_ctx->idx_loop >= 0); - - /* [ ... buf loop ] */ - - /* - * Process replacer/proplist (2nd argument to JSON.stringify) - */ - - h = duk_get_hobject(thr, idx_replacer); - if (h != NULL) { - if (DUK_HOBJECT_IS_CALLABLE(h)) { - js_ctx->h_replacer = h; - } else if (duk_js_isarray_hobject(h)) { - /* Here the specification requires correct array index enumeration - * which is a bit tricky for sparse arrays (it is handled by the - * enum setup code). We now enumerate ancestors too, although the - * specification is not very clear on whether that is required. - */ - - duk_uarridx_t plist_idx = 0; - duk_small_uint_t enum_flags; - - js_ctx->idx_proplist = duk_push_bare_array(thr); - - enum_flags = DUK_ENUM_ARRAY_INDICES_ONLY | DUK_ENUM_SORT_ARRAY_INDICES; /* expensive flag */ - duk_enum(thr, idx_replacer, enum_flags); - while (duk_next(thr, -1 /*enum_index*/, 1 /*get_value*/)) { - /* [ ... proplist enum_obj key val ] */ - if (duk__json_enc_allow_into_proplist(duk_get_tval(thr, -1))) { - /* XXX: duplicates should be eliminated here */ - DUK_DDD(DUK_DDDPRINT("proplist enum: key=%!T, val=%!T --> accept", - (duk_tval *) duk_get_tval(thr, -2), - (duk_tval *) duk_get_tval(thr, -1))); - duk_to_string(thr, -1); /* extra coercion of strings is OK */ - duk_put_prop_index(thr, -4, plist_idx); /* -> [ ... proplist enum_obj key ] */ - plist_idx++; - duk_pop(thr); - } else { - DUK_DDD(DUK_DDDPRINT("proplist enum: key=%!T, val=%!T --> reject", - (duk_tval *) duk_get_tval(thr, -2), - (duk_tval *) duk_get_tval(thr, -1))); - duk_pop_2(thr); - } - } - duk_pop(thr); /* pop enum */ - - /* [ ... proplist ] */ - } - } - - /* [ ... buf loop (proplist) ] */ - - /* - * Process space (3rd argument to JSON.stringify) - */ - - h = duk_get_hobject(thr, idx_space); - if (h != NULL) { - duk_small_uint_t c = DUK_HOBJECT_GET_CLASS_NUMBER(h); - if (c == DUK_HOBJECT_CLASS_NUMBER) { - duk_to_number(thr, idx_space); - } else if (c == DUK_HOBJECT_CLASS_STRING) { - duk_to_string(thr, idx_space); - } - } - - if (duk_is_number(thr, idx_space)) { - duk_small_int_t nspace; - /* spaces[] must be static to allow initializer with old compilers like BCC */ - static const char spaces[10] = { - DUK_ASC_SPACE, DUK_ASC_SPACE, DUK_ASC_SPACE, DUK_ASC_SPACE, DUK_ASC_SPACE, - DUK_ASC_SPACE, DUK_ASC_SPACE, DUK_ASC_SPACE, DUK_ASC_SPACE, DUK_ASC_SPACE - }; /* XXX: helper */ - - /* ToInteger() coercion; NaN -> 0, infinities are clamped to 0 and 10 */ - nspace = (duk_small_int_t) duk_to_int_clamped(thr, idx_space, 0 /*minval*/, 10 /*maxval*/); - DUK_ASSERT(nspace >= 0 && nspace <= 10); - - duk_push_lstring(thr, spaces, (duk_size_t) nspace); - js_ctx->h_gap = duk_known_hstring(thr, -1); - DUK_ASSERT(js_ctx->h_gap != NULL); - } else if (duk_is_string_notsymbol(thr, idx_space)) { - duk_dup(thr, idx_space); - duk_substring(thr, -1, 0, 10); /* clamp to 10 chars */ - js_ctx->h_gap = duk_known_hstring(thr, -1); - } else { - /* nop */ - } - - if (js_ctx->h_gap != NULL) { - /* If gap is empty, behave as if not given at all. Check - * against byte length because character length is more - * expensive. - */ - if (DUK_HSTRING_GET_BYTELEN(js_ctx->h_gap) == 0) { - js_ctx->h_gap = NULL; - } - } - - /* [ ... buf loop (proplist) (gap) ] */ - - /* - * Fast path: assume no mutation, iterate object property tables - * directly; bail out if that assumption doesn't hold. - */ - -#if defined(DUK_USE_JSON_STRINGIFY_FASTPATH) - if (js_ctx->h_replacer == NULL && /* replacer is a mutation risk */ - js_ctx->idx_proplist == -1) { /* proplist is very rare */ - duk_int_t pcall_rc; - duk_small_uint_t prev_ms_base_flags; - - DUK_DD(DUK_DDPRINT("try JSON.stringify() fast path")); - - /* Use recursion_limit to ensure we don't overwrite js_ctx->visiting[] - * array so we don't need two counter checks in the fast path. The - * slow path has a much larger recursion limit which we'll use if - * necessary. - */ - DUK_ASSERT(DUK_USE_JSON_ENC_RECLIMIT >= DUK_JSON_ENC_LOOPARRAY); - js_ctx->recursion_limit = DUK_JSON_ENC_LOOPARRAY; - DUK_ASSERT(js_ctx->recursion_depth == 0); - - /* Execute the fast path in a protected call. If any error is thrown, - * fall back to the slow path. This includes e.g. recursion limit - * because the fast path has a smaller recursion limit (and simpler, - * limited loop detection). - */ - - duk_dup(thr, idx_value); - - /* Must prevent finalizers which may have arbitrary side effects. */ - prev_ms_base_flags = thr->heap->ms_base_flags; - thr->heap->ms_base_flags |= DUK_MS_FLAG_NO_OBJECT_COMPACTION; /* Avoid attempt to compact any objects. */ - thr->heap->pf_prevent_count++; /* Prevent finalizers. */ - DUK_ASSERT(thr->heap->pf_prevent_count != 0); /* Wrap. */ - - pcall_rc = duk_safe_call(thr, duk__json_stringify_fast, (void *) js_ctx /*udata*/, 1 /*nargs*/, 0 /*nret*/); - - DUK_ASSERT(thr->heap->pf_prevent_count > 0); - thr->heap->pf_prevent_count--; - thr->heap->ms_base_flags = prev_ms_base_flags; - - if (pcall_rc == DUK_EXEC_SUCCESS) { - DUK_DD(DUK_DDPRINT("fast path successful")); - DUK_BW_PUSH_AS_STRING(thr, &js_ctx->bw); - goto replace_finished; - } - - /* We come here for actual aborts (like encountering .toJSON()) - * but also for recursion/loop errors. Bufwriter size can be - * kept because we'll probably need at least as much as we've - * allocated so far. - */ - DUK_D(DUK_DPRINT("fast path failed, serialize using slow path instead")); - DUK_BW_RESET_SIZE(thr, &js_ctx->bw); - js_ctx->recursion_depth = 0; - } -#endif - - /* - * Create wrapper object and serialize - */ - - idx_holder = duk_push_object(thr); - duk_dup(thr, idx_value); - duk_put_prop_stridx_short(thr, -2, DUK_STRIDX_EMPTY_STRING); - - DUK_DDD(DUK_DDDPRINT("before: flags=0x%08lx, loop=%!T, replacer=%!O, " - "proplist=%!T, gap=%!O, holder=%!T", - (unsigned long) js_ctx->flags, - (duk_tval *) duk_get_tval(thr, js_ctx->idx_loop), - (duk_heaphdr *) js_ctx->h_replacer, - (duk_tval *) (js_ctx->idx_proplist >= 0 ? duk_get_tval(thr, js_ctx->idx_proplist) : NULL), - (duk_heaphdr *) js_ctx->h_gap, - (duk_tval *) duk_get_tval(thr, -1))); - - /* serialize the wrapper with empty string key */ - - duk_push_hstring_empty(thr); - - /* [ ... buf loop (proplist) (gap) holder "" ] */ - - js_ctx->recursion_limit = DUK_USE_JSON_ENC_RECLIMIT; - DUK_ASSERT(js_ctx->recursion_depth == 0); - - if (DUK_UNLIKELY(duk__json_enc_value(js_ctx, idx_holder) == 0)) { /* [ ... holder key ] -> [ ... holder ] */ - /* Result is undefined. */ - duk_push_undefined(thr); - } else { - /* Convert buffer to result string. */ - DUK_BW_PUSH_AS_STRING(thr, &js_ctx->bw); - } - - DUK_DDD(DUK_DDDPRINT("after: flags=0x%08lx, loop=%!T, replacer=%!O, " - "proplist=%!T, gap=%!O, holder=%!T", - (unsigned long) js_ctx->flags, - (duk_tval *) duk_get_tval(thr, js_ctx->idx_loop), - (duk_heaphdr *) js_ctx->h_replacer, - (duk_tval *) (js_ctx->idx_proplist >= 0 ? duk_get_tval(thr, js_ctx->idx_proplist) : NULL), - (duk_heaphdr *) js_ctx->h_gap, - (duk_tval *) duk_get_tval(thr, idx_holder))); - - /* The stack has a variable shape here, so force it to the - * desired one explicitly. - */ - -#if defined(DUK_USE_JSON_STRINGIFY_FASTPATH) -replace_finished: -#endif - duk_replace(thr, entry_top); - duk_set_top(thr, entry_top + 1); - - DUK_DDD(DUK_DDDPRINT("JSON stringify end: value=%!T, replacer=%!T, space=%!T, " - "flags=0x%08lx, result=%!T, stack_top=%ld", - (duk_tval *) duk_get_tval(thr, idx_value), - (duk_tval *) duk_get_tval(thr, idx_replacer), - (duk_tval *) duk_get_tval(thr, idx_space), - (unsigned long) flags, - (duk_tval *) duk_get_tval(thr, -1), - (long) duk_get_top(thr))); - - DUK_ASSERT(duk_get_top(thr) == entry_top + 1); -} - -#if defined(DUK_USE_JSON_BUILTIN) - -/* - * Entry points - */ - -DUK_INTERNAL duk_ret_t duk_bi_json_object_parse(duk_hthread *thr) { - duk_bi_json_parse_helper(thr, 0 /*idx_value*/, 1 /*idx_replacer*/, 0 /*flags*/); - return 1; -} - -DUK_INTERNAL duk_ret_t duk_bi_json_object_stringify(duk_hthread *thr) { - duk_bi_json_stringify_helper(thr, 0 /*idx_value*/, 1 /*idx_replacer*/, 2 /*idx_space*/, 0 /*flags*/); - return 1; -} - -#endif /* DUK_USE_JSON_BUILTIN */ - -#endif /* DUK_USE_JSON_SUPPORT */ - -/* automatic undefs */ -#undef DUK__EMIT_1 -#undef DUK__EMIT_2 -#undef DUK__EMIT_CSTR -#undef DUK__EMIT_HSTR -#undef DUK__EMIT_STRIDX -#undef DUK__JSON_DECSTR_BUFSIZE -#undef DUK__JSON_DECSTR_CHUNKSIZE -#undef DUK__JSON_ENCSTR_CHUNKSIZE -#undef DUK__JSON_MAX_ESC_LEN -#undef DUK__JSON_STRINGIFY_BUFSIZE -#undef DUK__MKESC -#undef DUK__UNEMIT_1 -#line 1 "duk_bi_math.c" -/* - * Math built-ins - */ - -/* #include duk_internal.h -> already included */ - -#if defined(DUK_USE_MATH_BUILTIN) - -/* - * Use static helpers which can work with math.h functions matching - * the following signatures. This is not portable if any of these math - * functions is actually a macro. - * - * Typing here is intentionally 'double' wherever values interact with - * the standard library APIs. - */ - -typedef double (*duk__one_arg_func)(double); -typedef double (*duk__two_arg_func)(double, double); - -DUK_LOCAL duk_ret_t duk__math_minmax(duk_hthread *thr, duk_double_t initial, duk__two_arg_func min_max) { - duk_idx_t n = duk_get_top(thr); - duk_idx_t i; - duk_double_t res = initial; - duk_double_t t; - - /* - * Note: fmax() does not match the E5 semantics. E5 requires - * that if -any- input to Math.max() is a NaN, the result is a - * NaN. fmax() will return a NaN only if -both- inputs are NaN. - * Same applies to fmin(). - * - * Note: every input value must be coerced with ToNumber(), even - * if we know the result will be a NaN anyway: ToNumber() may have - * side effects for which even order of evaluation matters. - */ - - for (i = 0; i < n; i++) { - t = duk_to_number(thr, i); - if (DUK_FPCLASSIFY(t) == DUK_FP_NAN || DUK_FPCLASSIFY(res) == DUK_FP_NAN) { - /* Note: not normalized, but duk_push_number() will normalize */ - res = (duk_double_t) DUK_DOUBLE_NAN; - } else { - res = (duk_double_t) min_max(res, (double) t); - } - } - - duk_push_number(thr, res); - return 1; -} - -DUK_LOCAL double duk__fmin_fixed(double x, double y) { - /* fmin() with args -0 and +0 is not guaranteed to return - * -0 as ECMAScript requires. - */ - if (duk_double_equals(x, 0.0) && duk_double_equals(y, 0.0)) { - duk_double_union du1, du2; - du1.d = x; - du2.d = y; - - /* Already checked to be zero so these must hold, and allow us - * to check for "x is -0 or y is -0" by ORing the high parts - * for comparison. - */ - DUK_ASSERT(du1.ui[DUK_DBL_IDX_UI0] == 0 || du1.ui[DUK_DBL_IDX_UI0] == 0x80000000UL); - DUK_ASSERT(du2.ui[DUK_DBL_IDX_UI0] == 0 || du2.ui[DUK_DBL_IDX_UI0] == 0x80000000UL); - - /* XXX: what's the safest way of creating a negative zero? */ - if ((du1.ui[DUK_DBL_IDX_UI0] | du2.ui[DUK_DBL_IDX_UI0]) != 0) { - /* Enter here if either x or y (or both) is -0. */ - return -0.0; - } else { - return +0.0; - } - } - return duk_double_fmin(x, y); -} - -DUK_LOCAL double duk__fmax_fixed(double x, double y) { - /* fmax() with args -0 and +0 is not guaranteed to return - * +0 as ECMAScript requires. - */ - if (duk_double_equals(x, 0.0) && duk_double_equals(y, 0.0)) { - if (DUK_SIGNBIT(x) == 0 || DUK_SIGNBIT(y) == 0) { - return +0.0; - } else { - return -0.0; - } - } - return duk_double_fmax(x, y); -} - -#if defined(DUK_USE_ES6) -DUK_LOCAL double duk__cbrt(double x) { - /* cbrt() is C99. To avoid hassling embedders with the need to provide a - * cube root function, we can get by with pow(). The result is not - * identical, but that's OK: ES2015 says it's implementation-dependent. - */ - -#if defined(DUK_CBRT) - /* cbrt() matches ES2015 requirements. */ - return DUK_CBRT(x); -#else - duk_small_int_t c = (duk_small_int_t) DUK_FPCLASSIFY(x); - - /* pow() does not, however. */ - if (c == DUK_FP_NAN || c == DUK_FP_INFINITE || c == DUK_FP_ZERO) { - return x; - } - if (DUK_SIGNBIT(x)) { - return -DUK_POW(-x, 1.0 / 3.0); - } else { - return DUK_POW(x, 1.0 / 3.0); - } -#endif -} - -DUK_LOCAL double duk__log2(double x) { -#if defined(DUK_LOG2) - return DUK_LOG2(x); -#else - return DUK_LOG(x) * DUK_DOUBLE_LOG2E; -#endif -} - -DUK_LOCAL double duk__log10(double x) { -#if defined(DUK_LOG10) - return DUK_LOG10(x); -#else - return DUK_LOG(x) * DUK_DOUBLE_LOG10E; -#endif -} - -DUK_LOCAL double duk__trunc(double x) { -#if defined(DUK_TRUNC) - return DUK_TRUNC(x); -#else - /* Handles -0 correctly: -0.0 matches 'x >= 0.0' but floor() - * is required to return -0 when the argument is -0. - */ - return x >= 0.0 ? DUK_FLOOR(x) : DUK_CEIL(x); -#endif -} -#endif /* DUK_USE_ES6 */ - -DUK_LOCAL double duk__round_fixed(double x) { - /* Numbers half-way between integers must be rounded towards +Infinity, - * e.g. -3.5 must be rounded to -3 (not -4). When rounded to zero, zero - * sign must be set appropriately. E5.1 Section 15.8.2.15. - * - * Note that ANSI C round() is "round to nearest integer, away from zero", - * which is incorrect for negative values. Here we make do with floor(). - */ - - duk_small_int_t c = (duk_small_int_t) DUK_FPCLASSIFY(x); - if (c == DUK_FP_NAN || c == DUK_FP_INFINITE || c == DUK_FP_ZERO) { - return x; - } - - /* - * x is finite and non-zero - * - * -1.6 -> floor(-1.1) -> -2 - * -1.5 -> floor(-1.0) -> -1 (towards +Inf) - * -1.4 -> floor(-0.9) -> -1 - * -0.5 -> -0.0 (special case) - * -0.1 -> -0.0 (special case) - * +0.1 -> +0.0 (special case) - * +0.5 -> floor(+1.0) -> 1 (towards +Inf) - * +1.4 -> floor(+1.9) -> 1 - * +1.5 -> floor(+2.0) -> 2 (towards +Inf) - * +1.6 -> floor(+2.1) -> 2 - */ - - if (x >= -0.5 && x < 0.5) { - /* +0.5 is handled by floor, this is on purpose */ - if (x < 0.0) { - return -0.0; - } else { - return +0.0; - } - } - - return DUK_FLOOR(x + 0.5); -} - -/* Wrappers for calling standard math library methods. These may be required - * on platforms where one or more of the math built-ins are defined as macros - * or inline functions and are thus not suitable to be used as function pointers. - */ -#if defined(DUK_USE_AVOID_PLATFORM_FUNCPTRS) -DUK_LOCAL double duk__fabs(double x) { - return DUK_FABS(x); -} -DUK_LOCAL double duk__acos(double x) { - return DUK_ACOS(x); -} -DUK_LOCAL double duk__asin(double x) { - return DUK_ASIN(x); -} -DUK_LOCAL double duk__atan(double x) { - return DUK_ATAN(x); -} -DUK_LOCAL double duk__ceil(double x) { - return DUK_CEIL(x); -} -DUK_LOCAL double duk__cos(double x) { - return DUK_COS(x); -} -DUK_LOCAL double duk__exp(double x) { - return DUK_EXP(x); -} -DUK_LOCAL double duk__floor(double x) { - return DUK_FLOOR(x); -} -DUK_LOCAL double duk__log(double x) { - return DUK_LOG(x); -} -DUK_LOCAL double duk__sin(double x) { - return DUK_SIN(x); -} -DUK_LOCAL double duk__sqrt(double x) { - return DUK_SQRT(x); -} -DUK_LOCAL double duk__tan(double x) { - return DUK_TAN(x); -} -DUK_LOCAL double duk__atan2_fixed(double x, double y) { -#if defined(DUK_USE_ATAN2_WORKAROUNDS) - /* Specific fixes to common atan2() implementation issues: - * - test-bug-mingw-math-issues.js - */ - if (DUK_ISINF(x) && DUK_ISINF(y)) { - if (DUK_SIGNBIT(x)) { - if (DUK_SIGNBIT(y)) { - return -2.356194490192345; - } else { - return -0.7853981633974483; - } - } else { - if (DUK_SIGNBIT(y)) { - return 2.356194490192345; - } else { - return 0.7853981633974483; - } - } - } -#else - /* Some ISO C assumptions. */ - - DUK_ASSERT(duk_double_equals(DUK_ATAN2(DUK_DOUBLE_INFINITY, DUK_DOUBLE_INFINITY), 0.7853981633974483)); - DUK_ASSERT(duk_double_equals(DUK_ATAN2(-DUK_DOUBLE_INFINITY, DUK_DOUBLE_INFINITY), -0.7853981633974483)); - DUK_ASSERT(duk_double_equals(DUK_ATAN2(DUK_DOUBLE_INFINITY, -DUK_DOUBLE_INFINITY), 2.356194490192345)); - DUK_ASSERT(duk_double_equals(DUK_ATAN2(-DUK_DOUBLE_INFINITY, -DUK_DOUBLE_INFINITY), -2.356194490192345)); -#endif - - return DUK_ATAN2(x, y); -} -#endif /* DUK_USE_AVOID_PLATFORM_FUNCPTRS */ - -/* order must match constants in genbuiltins.py */ -DUK_LOCAL const duk__one_arg_func duk__one_arg_funcs[] = { -#if defined(DUK_USE_AVOID_PLATFORM_FUNCPTRS) - duk__fabs, duk__acos, duk__asin, duk__atan, duk__ceil, duk__cos, duk__exp, - duk__floor, duk__log, duk__round_fixed, duk__sin, duk__sqrt, duk__tan, -#if defined(DUK_USE_ES6) - duk__cbrt, duk__log2, duk__log10, duk__trunc -#endif -#else /* DUK_USE_AVOID_PLATFORM_FUNCPTRS */ - DUK_FABS, DUK_ACOS, DUK_ASIN, DUK_ATAN, DUK_CEIL, DUK_COS, DUK_EXP, - DUK_FLOOR, DUK_LOG, duk__round_fixed, DUK_SIN, DUK_SQRT, DUK_TAN, -#if defined(DUK_USE_ES6) - duk__cbrt, duk__log2, duk__log10, duk__trunc -#endif -#endif /* DUK_USE_AVOID_PLATFORM_FUNCPTRS */ -}; - -/* order must match constants in genbuiltins.py */ -DUK_LOCAL const duk__two_arg_func duk__two_arg_funcs[] = { -#if defined(DUK_USE_AVOID_PLATFORM_FUNCPTRS) - duk__atan2_fixed, - duk_js_arith_pow -#else - duk__atan2_fixed, - duk_js_arith_pow -#endif -}; - -DUK_INTERNAL duk_ret_t duk_bi_math_object_onearg_shared(duk_hthread *thr) { - duk_small_int_t fun_idx = duk_get_current_magic(thr); - duk__one_arg_func fun; - duk_double_t arg1; - - DUK_ASSERT(fun_idx >= 0); - DUK_ASSERT(fun_idx < (duk_small_int_t) (sizeof(duk__one_arg_funcs) / sizeof(duk__one_arg_func))); - arg1 = duk_to_number(thr, 0); - fun = duk__one_arg_funcs[fun_idx]; - duk_push_number(thr, (duk_double_t) fun((double) arg1)); - return 1; -} - -DUK_INTERNAL duk_ret_t duk_bi_math_object_twoarg_shared(duk_hthread *thr) { - duk_small_int_t fun_idx = duk_get_current_magic(thr); - duk__two_arg_func fun; - duk_double_t arg1; - duk_double_t arg2; - - DUK_ASSERT(fun_idx >= 0); - DUK_ASSERT(fun_idx < (duk_small_int_t) (sizeof(duk__two_arg_funcs) / sizeof(duk__two_arg_func))); - arg1 = duk_to_number(thr, 0); /* explicit ordered evaluation to match coercion semantics */ - arg2 = duk_to_number(thr, 1); - fun = duk__two_arg_funcs[fun_idx]; - duk_push_number(thr, (duk_double_t) fun((double) arg1, (double) arg2)); - return 1; -} - -DUK_INTERNAL duk_ret_t duk_bi_math_object_max(duk_hthread *thr) { - return duk__math_minmax(thr, -DUK_DOUBLE_INFINITY, duk__fmax_fixed); -} - -DUK_INTERNAL duk_ret_t duk_bi_math_object_min(duk_hthread *thr) { - return duk__math_minmax(thr, DUK_DOUBLE_INFINITY, duk__fmin_fixed); -} - -DUK_INTERNAL duk_ret_t duk_bi_math_object_random(duk_hthread *thr) { - duk_push_number(thr, (duk_double_t) duk_util_get_random_double(thr)); - return 1; -} - -#if defined(DUK_USE_ES6) -DUK_INTERNAL duk_ret_t duk_bi_math_object_hypot(duk_hthread *thr) { - /* - * E6 Section 20.2.2.18: Math.hypot - * - * - If no arguments are passed, the result is +0. - * - If any argument is +inf, the result is +inf. - * - If any argument is -inf, the result is +inf. - * - If no argument is +inf or -inf, and any argument is NaN, the result is - * NaN. - * - If all arguments are either +0 or -0, the result is +0. - */ - - duk_idx_t nargs; - duk_idx_t i; - duk_bool_t found_nan; - duk_double_t max; - duk_double_t sum, summand; - duk_double_t comp, prelim; - duk_double_t t; - - nargs = duk_get_top(thr); - - /* Find the highest value. Also ToNumber() coerces. */ - max = 0.0; - found_nan = 0; - for (i = 0; i < nargs; i++) { - t = DUK_FABS(duk_to_number(thr, i)); - if (DUK_FPCLASSIFY(t) == DUK_FP_NAN) { - found_nan = 1; - } else { - max = duk_double_fmax(max, t); - } - } - - /* Early return cases. */ - if (duk_double_equals(max, DUK_DOUBLE_INFINITY)) { - duk_push_number(thr, DUK_DOUBLE_INFINITY); - return 1; - } else if (found_nan) { - duk_push_number(thr, DUK_DOUBLE_NAN); - return 1; - } else if (duk_double_equals(max, 0.0)) { - duk_push_number(thr, 0.0); - /* Otherwise we'd divide by zero. */ - return 1; - } - - /* Use Kahan summation and normalize to the highest value to minimize - * floating point rounding error and avoid overflow. - * - * https://en.wikipedia.org/wiki/Kahan_summation_algorithm - */ - sum = 0.0; - comp = 0.0; - for (i = 0; i < nargs; i++) { - t = DUK_FABS(duk_get_number(thr, i)) / max; - summand = (t * t) - comp; - prelim = sum + summand; - comp = (prelim - sum) - summand; - sum = prelim; - } - - duk_push_number(thr, (duk_double_t) DUK_SQRT(sum) * max); - return 1; -} -#endif /* DUK_USE_ES6 */ - -#if defined(DUK_USE_ES6) -DUK_INTERNAL duk_ret_t duk_bi_math_object_sign(duk_hthread *thr) { - duk_double_t d; - - d = duk_to_number(thr, 0); - if (duk_double_is_nan(d)) { - DUK_ASSERT(duk_is_nan(thr, -1)); - return 1; /* NaN input -> return NaN */ - } - if (duk_double_equals(d, 0.0)) { - /* Zero sign kept, i.e. -0 -> -0, +0 -> +0. */ - return 1; - } - duk_push_int(thr, (d > 0.0 ? 1 : -1)); - return 1; -} -#endif /* DUK_USE_ES6 */ - -#if defined(DUK_USE_ES6) -DUK_INTERNAL duk_ret_t duk_bi_math_object_clz32(duk_hthread *thr) { - duk_uint32_t x; - duk_small_uint_t i; - -#if defined(DUK_USE_PREFER_SIZE) - duk_uint32_t mask; - - x = duk_to_uint32(thr, 0); - for (i = 0, mask = 0x80000000UL; mask != 0; mask >>= 1) { - if (x & mask) { - break; - } - i++; - } - DUK_ASSERT(i <= 32); - duk_push_uint(thr, i); - return 1; -#else /* DUK_USE_PREFER_SIZE */ - i = 0; - x = duk_to_uint32(thr, 0); - if (x & 0xffff0000UL) { - x >>= 16; - } else { - i += 16; - } - if (x & 0x0000ff00UL) { - x >>= 8; - } else { - i += 8; - } - if (x & 0x000000f0UL) { - x >>= 4; - } else { - i += 4; - } - if (x & 0x0000000cUL) { - x >>= 2; - } else { - i += 2; - } - if (x & 0x00000002UL) { - x >>= 1; - } else { - i += 1; - } - if (x & 0x00000001UL) { - ; - } else { - i += 1; - } - DUK_ASSERT(i <= 32); - duk_push_uint(thr, i); - return 1; -#endif /* DUK_USE_PREFER_SIZE */ -} -#endif /* DUK_USE_ES6 */ - -#if defined(DUK_USE_ES6) -DUK_INTERNAL duk_ret_t duk_bi_math_object_imul(duk_hthread *thr) { - duk_uint32_t x, y, z; - - x = duk_to_uint32(thr, 0); - y = duk_to_uint32(thr, 1); - z = x * y; - - /* While arguments are ToUint32() coerced and the multiplication - * is unsigned as such, the final result is curiously interpreted - * as a signed 32-bit value. - */ - duk_push_i32(thr, (duk_int32_t) z); - return 1; -} -#endif /* DUK_USE_ES6 */ - -#endif /* DUK_USE_MATH_BUILTIN */ -#line 1 "duk_bi_number.c" -/* - * Number built-ins - */ - -/* #include duk_internal.h -> already included */ - -#if defined(DUK_USE_NUMBER_BUILTIN) - -DUK_LOCAL duk_double_t duk__push_this_number_plain(duk_hthread *thr) { - duk_hobject *h; - - /* Number built-in accepts a plain number or a Number object (whose - * internal value is operated on). Other types cause TypeError. - */ - - duk_push_this(thr); - if (duk_is_number(thr, -1)) { - DUK_DDD(DUK_DDDPRINT("plain number value: %!T", (duk_tval *) duk_get_tval(thr, -1))); - goto done; - } - h = duk_get_hobject(thr, -1); - if (!h || (DUK_HOBJECT_GET_CLASS_NUMBER(h) != DUK_HOBJECT_CLASS_NUMBER)) { - DUK_DDD(DUK_DDDPRINT("unacceptable this value: %!T", (duk_tval *) duk_get_tval(thr, -1))); - DUK_ERROR_TYPE(thr, "number expected"); - DUK_WO_NORETURN(return 0.0;); - } - duk_xget_owndataprop_stridx_short(thr, -1, DUK_STRIDX_INT_VALUE); - DUK_ASSERT(duk_is_number(thr, -1)); - DUK_DDD(DUK_DDDPRINT("number object: %!T, internal value: %!T", - (duk_tval *) duk_get_tval(thr, -2), - (duk_tval *) duk_get_tval(thr, -1))); - duk_remove_m2(thr); - -done: - return duk_get_number(thr, -1); -} - -DUK_INTERNAL duk_ret_t duk_bi_number_constructor(duk_hthread *thr) { - duk_idx_t nargs; - duk_hobject *h_this; - - /* - * The Number constructor uses ToNumber(arg) for number coercion - * (coercing an undefined argument to NaN). However, if the - * argument is not given at all, +0 must be used instead. To do - * this, a vararg function is used. - */ - - nargs = duk_get_top(thr); - if (nargs == 0) { - duk_push_int(thr, 0); - } - duk_to_number(thr, 0); - duk_set_top(thr, 1); - DUK_ASSERT_TOP(thr, 1); - - if (!duk_is_constructor_call(thr)) { - return 1; - } - - /* - * E5 Section 15.7.2.1 requires that the constructed object - * must have the original Number.prototype as its internal - * prototype. However, since Number.prototype is non-writable - * and non-configurable, this doesn't have to be enforced here: - * The default object (bound to 'this') is OK, though we have - * to change its class. - * - * Internal value set to ToNumber(arg) or +0; if no arg given, - * ToNumber(undefined) = NaN, so special treatment is needed - * (above). String internal value is immutable. - */ - - /* XXX: helper */ - duk_push_this(thr); - h_this = duk_known_hobject(thr, -1); - DUK_HOBJECT_SET_CLASS_NUMBER(h_this, DUK_HOBJECT_CLASS_NUMBER); - - DUK_ASSERT(DUK_HOBJECT_GET_PROTOTYPE(thr->heap, h_this) == thr->builtins[DUK_BIDX_NUMBER_PROTOTYPE]); - DUK_ASSERT(DUK_HOBJECT_GET_CLASS_NUMBER(h_this) == DUK_HOBJECT_CLASS_NUMBER); - DUK_ASSERT(DUK_HOBJECT_HAS_EXTENSIBLE(h_this)); - - duk_dup_0(thr); /* -> [ val obj val ] */ - duk_xdef_prop_stridx_short(thr, -2, DUK_STRIDX_INT_VALUE, DUK_PROPDESC_FLAGS_NONE); - return 0; /* no return value -> don't replace created value */ -} - -DUK_INTERNAL duk_ret_t duk_bi_number_prototype_value_of(duk_hthread *thr) { - (void) duk__push_this_number_plain(thr); - return 1; -} - -DUK_INTERNAL duk_ret_t duk_bi_number_prototype_to_string(duk_hthread *thr) { - duk_small_int_t radix; - duk_small_uint_t n2s_flags; - - (void) duk__push_this_number_plain(thr); - if (duk_is_undefined(thr, 0)) { - radix = 10; - } else { - radix = (duk_small_int_t) duk_to_int_check_range(thr, 0, 2, 36); - } - DUK_DDD(DUK_DDDPRINT("radix=%ld", (long) radix)); - - n2s_flags = 0; - - duk_numconv_stringify(thr, radix /*radix*/, 0 /*digits*/, n2s_flags /*flags*/); - return 1; -} - -DUK_INTERNAL duk_ret_t duk_bi_number_prototype_to_locale_string(duk_hthread *thr) { - /* XXX: just use toString() for now; permitted although not recommended. - * nargs==1, so radix is passed to toString(). - */ - return duk_bi_number_prototype_to_string(thr); -} - -/* - * toFixed(), toExponential(), toPrecision() - */ - -/* XXX: shared helper for toFixed(), toExponential(), toPrecision()? */ - -DUK_INTERNAL duk_ret_t duk_bi_number_prototype_to_fixed(duk_hthread *thr) { - duk_small_int_t frac_digits; - duk_double_t d; - duk_small_int_t c; - duk_small_uint_t n2s_flags; - - /* In ES5.1 frac_digits is coerced first; in ES2015 the 'this number - * value' check is done first. - */ - d = duk__push_this_number_plain(thr); - frac_digits = (duk_small_int_t) duk_to_int_check_range(thr, 0, 0, 20); - - c = (duk_small_int_t) DUK_FPCLASSIFY(d); - if (c == DUK_FP_NAN || c == DUK_FP_INFINITE) { - goto use_to_string; - } - - if (d >= 1.0e21 || d <= -1.0e21) { - goto use_to_string; - } - - n2s_flags = DUK_N2S_FLAG_FIXED_FORMAT | DUK_N2S_FLAG_FRACTION_DIGITS; - - duk_numconv_stringify(thr, 10 /*radix*/, frac_digits /*digits*/, n2s_flags /*flags*/); - return 1; - -use_to_string: - DUK_ASSERT_TOP(thr, 2); - duk_to_string(thr, -1); - return 1; -} - -DUK_INTERNAL duk_ret_t duk_bi_number_prototype_to_exponential(duk_hthread *thr) { - duk_bool_t frac_undefined; - duk_small_int_t frac_digits; - duk_double_t d; - duk_small_int_t c; - duk_small_uint_t n2s_flags; - - d = duk__push_this_number_plain(thr); - - frac_undefined = duk_is_undefined(thr, 0); - duk_to_int(thr, 0); /* for side effects */ - - c = (duk_small_int_t) DUK_FPCLASSIFY(d); - if (c == DUK_FP_NAN || c == DUK_FP_INFINITE) { - goto use_to_string; - } - - frac_digits = (duk_small_int_t) duk_to_int_check_range(thr, 0, 0, 20); - - n2s_flags = DUK_N2S_FLAG_FORCE_EXP | (frac_undefined ? 0 : DUK_N2S_FLAG_FIXED_FORMAT); - - duk_numconv_stringify(thr, 10 /*radix*/, frac_digits + 1 /*leading digit + fractions*/, n2s_flags /*flags*/); - return 1; - -use_to_string: - DUK_ASSERT_TOP(thr, 2); - duk_to_string(thr, -1); - return 1; -} - -DUK_INTERNAL duk_ret_t duk_bi_number_prototype_to_precision(duk_hthread *thr) { - /* The specification has quite awkward order of coercion and - * checks for toPrecision(). The operations below are a bit - * reordered, within constraints of observable side effects. - */ - - duk_double_t d; - duk_small_int_t prec; - duk_small_int_t c; - duk_small_uint_t n2s_flags; - - DUK_ASSERT_TOP(thr, 1); - - d = duk__push_this_number_plain(thr); - if (duk_is_undefined(thr, 0)) { - goto use_to_string; - } - DUK_ASSERT_TOP(thr, 2); - - duk_to_int(thr, 0); /* for side effects */ - - c = (duk_small_int_t) DUK_FPCLASSIFY(d); - if (c == DUK_FP_NAN || c == DUK_FP_INFINITE) { - goto use_to_string; - } - - prec = (duk_small_int_t) duk_to_int_check_range(thr, 0, 1, 21); - - n2s_flags = DUK_N2S_FLAG_FIXED_FORMAT | DUK_N2S_FLAG_NO_ZERO_PAD; - - duk_numconv_stringify(thr, 10 /*radix*/, prec /*digits*/, n2s_flags /*flags*/); - return 1; - -use_to_string: - /* Used when precision is undefined; also used for NaN (-> "NaN"), - * and +/- infinity (-> "Infinity", "-Infinity"). - */ - - DUK_ASSERT_TOP(thr, 2); - duk_to_string(thr, -1); - return 1; -} - -/* - * ES2015 isFinite() etc - */ - -#if defined(DUK_USE_ES6) -DUK_INTERNAL duk_ret_t duk_bi_number_check_shared(duk_hthread *thr) { - duk_int_t magic; - duk_bool_t ret = 0; - - if (duk_is_number(thr, 0)) { - duk_double_t d; - - magic = duk_get_current_magic(thr); - d = duk_get_number(thr, 0); - - switch (magic) { - case 0: /* isFinite() */ - ret = duk_double_is_finite(d); - break; - case 1: /* isInteger() */ - ret = duk_double_is_integer(d); - break; - case 2: /* isNaN() */ - ret = duk_double_is_nan(d); - break; - default: /* isSafeInteger() */ - DUK_ASSERT(magic == 3); - ret = duk_double_is_safe_integer(d); - } - } - - duk_push_boolean(thr, ret); - return 1; -} -#endif /* DUK_USE_ES6 */ - -#endif /* DUK_USE_NUMBER_BUILTIN */ -#line 1 "duk_bi_object.c" -/* - * Object built-ins - */ - -/* #include duk_internal.h -> already included */ - -/* Needed even when Object built-in disabled. */ -DUK_INTERNAL duk_ret_t duk_bi_object_prototype_to_string(duk_hthread *thr) { - duk_tval *tv; - - tv = DUK_HTHREAD_THIS_PTR(thr); - duk_push_class_string_tval(thr, tv, 0 /*avoid_side_effects*/); - return 1; -} - -#if defined(DUK_USE_OBJECT_BUILTIN) -DUK_INTERNAL duk_ret_t duk_bi_object_constructor(duk_hthread *thr) { - duk_uint_t arg_mask; - - arg_mask = duk_get_type_mask(thr, 0); - - if (!duk_is_constructor_call(thr) && /* not a constructor call */ - ((arg_mask & (DUK_TYPE_MASK_NULL | DUK_TYPE_MASK_UNDEFINED)) == 0)) { /* and argument not null or undefined */ - duk_to_object(thr, 0); - return 1; - } - - /* Pointer and buffer primitive values are treated like other - * primitives values which have a fully fledged object counterpart: - * promote to an object value. Lightfuncs and plain buffers are - * coerced with ToObject() even they could also be returned as is. - */ - if (arg_mask & (DUK_TYPE_MASK_OBJECT | DUK_TYPE_MASK_STRING | DUK_TYPE_MASK_BOOLEAN | DUK_TYPE_MASK_NUMBER | - DUK_TYPE_MASK_POINTER | DUK_TYPE_MASK_BUFFER | DUK_TYPE_MASK_LIGHTFUNC)) { - /* For DUK_TYPE_OBJECT the coercion is a no-op and could - * be checked for explicitly, but Object(obj) calls are - * not very common so opt for minimal footprint. - */ - duk_to_object(thr, 0); - return 1; - } - - (void) duk_push_object_helper(thr, - DUK_HOBJECT_FLAG_EXTENSIBLE | DUK_HOBJECT_FLAG_FASTREFS | - DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_OBJECT), - DUK_BIDX_OBJECT_PROTOTYPE); - return 1; -} -#endif /* DUK_USE_OBJECT_BUILTIN */ - -#if defined(DUK_USE_OBJECT_BUILTIN) && defined(DUK_USE_ES6) -DUK_INTERNAL duk_ret_t duk_bi_object_constructor_assign(duk_hthread *thr) { - duk_idx_t nargs; - duk_int_t idx; - - nargs = duk_get_top_require_min(thr, 1 /*min_top*/); - - duk_to_object(thr, 0); - for (idx = 1; idx < nargs; idx++) { - /* E7 19.1.2.1 (step 4a) */ - if (duk_is_null_or_undefined(thr, idx)) { - continue; - } - - /* duk_enum() respects ES2015+ [[OwnPropertyKeys]] ordering, which is - * convenient here. - */ - duk_to_object(thr, idx); - duk_enum(thr, idx, DUK_ENUM_OWN_PROPERTIES_ONLY); - while (duk_next(thr, -1, 1 /*get_value*/)) { - /* [ target ... enum key value ] */ - duk_put_prop(thr, 0); - /* [ target ... enum ] */ - } - /* Could pop enumerator, but unnecessary because of duk_set_top() - * below. - */ - } - - duk_set_top(thr, 1); - return 1; -} -#endif - -#if defined(DUK_USE_OBJECT_BUILTIN) && defined(DUK_USE_ES6) -DUK_INTERNAL duk_ret_t duk_bi_object_constructor_is(duk_hthread *thr) { - DUK_ASSERT_TOP(thr, 2); - duk_push_boolean(thr, duk_samevalue(thr, 0, 1)); - return 1; -} -#endif - -#if defined(DUK_USE_OBJECT_BUILTIN) -DUK_INTERNAL duk_ret_t duk_bi_object_constructor_create(duk_hthread *thr) { - duk_hobject *proto; - - DUK_ASSERT_TOP(thr, 2); - -#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) - duk_hbufobj_promote_plain(thr, 0); -#endif - proto = duk_require_hobject_accept_mask(thr, 0, DUK_TYPE_MASK_NULL); - DUK_ASSERT(proto != NULL || duk_is_null(thr, 0)); - - (void) duk_push_object_helper_proto(thr, - DUK_HOBJECT_FLAG_EXTENSIBLE | DUK_HOBJECT_FLAG_FASTREFS | - DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_OBJECT), - proto); - - if (!duk_is_undefined(thr, 1)) { - /* [ O Properties obj ] */ - - duk_replace(thr, 0); - - /* [ obj Properties ] */ - - /* Just call the "original" Object.defineProperties() to - * finish up. - */ - - return duk_bi_object_constructor_define_properties(thr); - } - - /* [ O Properties obj ] */ - - return 1; -} -#endif /* DUK_USE_OBJECT_BUILTIN */ - -#if defined(DUK_USE_OBJECT_BUILTIN) -DUK_INTERNAL duk_ret_t duk_bi_object_constructor_define_properties(duk_hthread *thr) { - duk_small_uint_t pass; - duk_uint_t defprop_flags; - duk_hobject *obj; - duk_idx_t idx_value; - duk_hobject *get; - duk_hobject *set; - - /* Lightfunc and plain buffer handling by ToObject() coercion. */ - obj = duk_require_hobject_promote_mask(thr, 0, DUK_TYPE_MASK_LIGHTFUNC | DUK_TYPE_MASK_BUFFER); - DUK_ASSERT(obj != NULL); - - duk_to_object(thr, 1); /* properties object */ - - DUK_DDD(DUK_DDDPRINT("target=%!iT, properties=%!iT", (duk_tval *) duk_get_tval(thr, 0), (duk_tval *) duk_get_tval(thr, 1))); - - /* - * Two pass approach to processing the property descriptors. - * On first pass validate and normalize all descriptors before - * any changes are made to the target object. On second pass - * make the actual modifications to the target object. - * - * Right now we'll just use the same normalize/validate helper - * on both passes, ignoring its outputs on the first pass. - */ - - for (pass = 0; pass < 2; pass++) { - duk_set_top(thr, 2); /* -> [ hobject props ] */ - duk_enum(thr, 1, DUK_ENUM_OWN_PROPERTIES_ONLY | DUK_ENUM_INCLUDE_SYMBOLS /*enum_flags*/); - - for (;;) { - duk_hstring *key; - - /* [ hobject props enum(props) ] */ - - duk_set_top(thr, 3); - - if (!duk_next(thr, 2, 1 /*get_value*/)) { - break; - } - - DUK_DDD(DUK_DDDPRINT("-> key=%!iT, desc=%!iT", - (duk_tval *) duk_get_tval(thr, -2), - (duk_tval *) duk_get_tval(thr, -1))); - - /* [ hobject props enum(props) key desc ] */ - - duk_hobject_prepare_property_descriptor(thr, 4 /*idx_desc*/, &defprop_flags, &idx_value, &get, &set); - - /* [ hobject props enum(props) key desc [multiple values] ] */ - - if (pass == 0) { - continue; - } - - /* This allows symbols on purpose. */ - key = duk_known_hstring(thr, 3); - DUK_ASSERT(key != NULL); - - duk_hobject_define_property_helper(thr, defprop_flags, obj, key, idx_value, get, set, 1 /*throw_flag*/); - } - } - - /* - * Return target object - */ - - duk_dup_0(thr); - return 1; -} -#endif /* DUK_USE_OBJECT_BUILTIN */ - -#if defined(DUK_USE_OBJECT_BUILTIN) -DUK_INTERNAL duk_ret_t duk_bi_object_constructor_seal_freeze_shared(duk_hthread *thr) { - DUK_ASSERT_TOP(thr, 1); - - duk_seal_freeze_raw(thr, 0, (duk_bool_t) duk_get_current_magic(thr) /*is_freeze*/); - return 1; -} -#endif /* DUK_USE_OBJECT_BUILTIN */ - -#if defined(DUK_USE_OBJECT_BUILTIN) -DUK_INTERNAL duk_ret_t duk_bi_object_constructor_is_sealed_frozen_shared(duk_hthread *thr) { - duk_hobject *h; - duk_bool_t is_frozen; - duk_uint_t mask; - - is_frozen = (duk_bool_t) duk_get_current_magic(thr); - mask = duk_get_type_mask(thr, 0); - if (mask & (DUK_TYPE_MASK_LIGHTFUNC | DUK_TYPE_MASK_BUFFER)) { - DUK_ASSERT(is_frozen == 0 || is_frozen == 1); - duk_push_boolean(thr, - (mask & DUK_TYPE_MASK_LIGHTFUNC) ? 1 : /* lightfunc always frozen and sealed */ - (is_frozen ^ 1)); /* buffer sealed but not frozen (index props writable) */ - } else { - /* ES2015 Sections 19.1.2.12, 19.1.2.13: anything other than an object - * is considered to be already sealed and frozen. - */ - h = duk_get_hobject(thr, 0); - duk_push_boolean(thr, (h == NULL) || duk_hobject_object_is_sealed_frozen_helper(thr, h, is_frozen /*is_frozen*/)); - } - return 1; -} -#endif /* DUK_USE_OBJECT_BUILTIN */ - -#if defined(DUK_USE_OBJECT_BUILTIN) -DUK_INTERNAL duk_ret_t duk_bi_object_prototype_to_locale_string(duk_hthread *thr) { - DUK_ASSERT_TOP(thr, 0); - (void) duk_push_this_coercible_to_object(thr); - duk_get_prop_stridx_short(thr, 0, DUK_STRIDX_TO_STRING); -#if 0 /* This is mentioned explicitly in the E5.1 spec, but duk_call_method() checks for it in practice. */ - duk_require_callable(thr, 1); -#endif - duk_dup_0(thr); /* -> [ O toString O ] */ - duk_call_method(thr, 0); /* XXX: call method tail call? */ - return 1; -} -#endif /* DUK_USE_OBJECT_BUILTIN */ - -#if defined(DUK_USE_OBJECT_BUILTIN) -DUK_INTERNAL duk_ret_t duk_bi_object_prototype_value_of(duk_hthread *thr) { - /* For lightfuncs and plain buffers, returns Object() coerced. */ - (void) duk_push_this_coercible_to_object(thr); - return 1; -} -#endif /* DUK_USE_OBJECT_BUILTIN */ - -#if defined(DUK_USE_OBJECT_BUILTIN) -DUK_INTERNAL duk_ret_t duk_bi_object_prototype_is_prototype_of(duk_hthread *thr) { - duk_hobject *h_v; - duk_hobject *h_obj; - - DUK_ASSERT_TOP(thr, 1); - - h_v = duk_get_hobject(thr, 0); - if (!h_v) { - duk_push_false(thr); /* XXX: tail call: return duk_push_false(thr) */ - return 1; - } - - h_obj = duk_push_this_coercible_to_object(thr); - DUK_ASSERT(h_obj != NULL); - - /* E5.1 Section 15.2.4.6, step 3.a, lookup proto once before compare. - * Prototype loops should cause an error to be thrown. - */ - duk_push_boolean( - thr, - duk_hobject_prototype_chain_contains(thr, DUK_HOBJECT_GET_PROTOTYPE(thr->heap, h_v), h_obj, 0 /*ignore_loop*/)); - return 1; -} -#endif /* DUK_USE_OBJECT_BUILTIN */ - -#if defined(DUK_USE_OBJECT_BUILTIN) -DUK_INTERNAL duk_ret_t duk_bi_object_prototype_has_own_property(duk_hthread *thr) { - return (duk_ret_t) duk_hobject_object_ownprop_helper(thr, 0 /*required_desc_flags*/); -} -#endif /* DUK_USE_OBJECT_BUILTIN */ - -#if defined(DUK_USE_OBJECT_BUILTIN) -DUK_INTERNAL duk_ret_t duk_bi_object_prototype_property_is_enumerable(duk_hthread *thr) { - return (duk_ret_t) duk_hobject_object_ownprop_helper(thr, DUK_PROPDESC_FLAG_ENUMERABLE /*required_desc_flags*/); -} -#endif /* DUK_USE_OBJECT_BUILTIN */ - -#if defined(DUK_USE_OBJECT_BUILTIN) || defined(DUK_USE_REFLECT_BUILTIN) -/* Shared helper to implement Object.getPrototypeOf, - * Object.prototype.__proto__ getter, and Reflect.getPrototypeOf. - * - * http://www.ecma-international.org/ecma-262/6.0/index.html#sec-get-object.prototype.__proto__ - */ -DUK_INTERNAL duk_ret_t duk_bi_object_getprototype_shared(duk_hthread *thr) { - /* - * magic = 0: __proto__ getter - * magic = 1: Object.getPrototypeOf() - * magic = 2: Reflect.getPrototypeOf() - */ - - duk_hobject *h; - duk_hobject *proto; - duk_tval *tv; - duk_int_t magic; - - magic = duk_get_current_magic(thr); - - if (magic == 0) { - DUK_ASSERT_TOP(thr, 0); - duk_push_this_coercible_to_object(thr); - } - DUK_ASSERT(duk_get_top(thr) >= 1); - if (magic < 2) { - /* ES2015 Section 19.1.2.9, step 1 */ - duk_to_object(thr, 0); - } - tv = DUK_GET_TVAL_POSIDX(thr, 0); - - switch (DUK_TVAL_GET_TAG(tv)) { - case DUK_TAG_BUFFER: - proto = thr->builtins[DUK_BIDX_UINT8ARRAY_PROTOTYPE]; - break; - case DUK_TAG_LIGHTFUNC: - proto = thr->builtins[DUK_BIDX_FUNCTION_PROTOTYPE]; - break; - case DUK_TAG_OBJECT: - h = DUK_TVAL_GET_OBJECT(tv); - proto = DUK_HOBJECT_GET_PROTOTYPE(thr->heap, h); - break; - default: - /* This implicitly handles CheckObjectCoercible() caused - * TypeError. - */ - DUK_DCERROR_TYPE_INVALID_ARGS(thr); - } - if (proto != NULL) { - duk_push_hobject(thr, proto); - } else { - duk_push_null(thr); - } - return 1; -} -#endif /* DUK_USE_OBJECT_BUILTIN || DUK_USE_REFLECT_BUILTIN */ - -#if defined(DUK_USE_OBJECT_BUILTIN) || defined(DUK_USE_REFLECT_BUILTIN) -/* Shared helper to implement ES2015 Object.setPrototypeOf, - * Object.prototype.__proto__ setter, and Reflect.setPrototypeOf. - * - * http://www.ecma-international.org/ecma-262/6.0/index.html#sec-get-object.prototype.__proto__ - * http://www.ecma-international.org/ecma-262/6.0/index.html#sec-object.setprototypeof - */ -DUK_INTERNAL duk_ret_t duk_bi_object_setprototype_shared(duk_hthread *thr) { - /* - * magic = 0: __proto__ setter - * magic = 1: Object.setPrototypeOf() - * magic = 2: Reflect.setPrototypeOf() - */ - - duk_hobject *h_obj; - duk_hobject *h_new_proto; - duk_hobject *h_curr; - duk_ret_t ret_success = 1; /* retval for success path */ - duk_uint_t mask; - duk_int_t magic; - - /* Preliminaries for __proto__ and setPrototypeOf (E6 19.1.2.18 steps 1-4). */ - magic = duk_get_current_magic(thr); - if (magic == 0) { - duk_push_this_check_object_coercible(thr); - duk_insert(thr, 0); - if (!duk_check_type_mask(thr, 1, DUK_TYPE_MASK_NULL | DUK_TYPE_MASK_OBJECT)) { - return 0; - } - - /* __proto__ setter returns 'undefined' on success unlike the - * setPrototypeOf() call which returns the target object. - */ - ret_success = 0; - } else { - if (magic == 1) { - duk_require_object_coercible(thr, 0); - } else { - duk_require_hobject_accept_mask(thr, 0, DUK_TYPE_MASK_LIGHTFUNC | DUK_TYPE_MASK_BUFFER); - } - duk_require_type_mask(thr, 1, DUK_TYPE_MASK_NULL | DUK_TYPE_MASK_OBJECT); - } - - h_new_proto = duk_get_hobject(thr, 1); - /* h_new_proto may be NULL */ - - mask = duk_get_type_mask(thr, 0); - if (mask & (DUK_TYPE_MASK_LIGHTFUNC | DUK_TYPE_MASK_BUFFER)) { - duk_hobject *curr_proto; - curr_proto = - thr->builtins[(mask & DUK_TYPE_MASK_LIGHTFUNC) ? DUK_BIDX_FUNCTION_PROTOTYPE : DUK_BIDX_UINT8ARRAY_PROTOTYPE]; - if (h_new_proto == curr_proto) { - goto skip; - } - goto fail_nonextensible; - } - h_obj = duk_get_hobject(thr, 0); - if (h_obj == NULL) { - goto skip; - } - DUK_ASSERT(h_obj != NULL); - - /* [[SetPrototypeOf]] standard behavior, E6 9.1.2. */ - /* TODO: implement Proxy object support here */ - - if (h_new_proto == DUK_HOBJECT_GET_PROTOTYPE(thr->heap, h_obj)) { - goto skip; - } - if (!DUK_HOBJECT_HAS_EXTENSIBLE(h_obj)) { - goto fail_nonextensible; - } - for (h_curr = h_new_proto; h_curr != NULL; h_curr = DUK_HOBJECT_GET_PROTOTYPE(thr->heap, h_curr)) { - /* Loop prevention. */ - if (h_curr == h_obj) { - goto fail_loop; - } - } - DUK_HOBJECT_SET_PROTOTYPE_UPDREF(thr, h_obj, h_new_proto); - /* fall thru */ - -skip: - duk_set_top(thr, 1); - if (magic == 2) { - duk_push_true(thr); - } - return ret_success; - -fail_nonextensible: -fail_loop: - if (magic != 2) { - DUK_DCERROR_TYPE_INVALID_ARGS(thr); - } else { - duk_push_false(thr); - return 1; - } -} -#endif /* DUK_USE_OBJECT_BUILTIN || DUK_USE_REFLECT_BUILTIN */ - -#if defined(DUK_USE_OBJECT_BUILTIN) || defined(DUK_USE_REFLECT_BUILTIN) -DUK_INTERNAL duk_ret_t duk_bi_object_constructor_define_property(duk_hthread *thr) { - /* - * magic = 0: Object.defineProperty() - * magic = 1: Reflect.defineProperty() - */ - - duk_hobject *obj; - duk_hstring *key; - duk_hobject *get; - duk_hobject *set; - duk_idx_t idx_value; - duk_uint_t defprop_flags; - duk_small_uint_t magic; - duk_bool_t throw_flag; - duk_bool_t ret; - - DUK_ASSERT(thr != NULL); - - DUK_DDD(DUK_DDDPRINT("Object.defineProperty(): ctx=%p obj=%!T key=%!T desc=%!T", - (void *) thr, - (duk_tval *) duk_get_tval(thr, 0), - (duk_tval *) duk_get_tval(thr, 1), - (duk_tval *) duk_get_tval(thr, 2))); - - /* [ obj key desc ] */ - - magic = (duk_small_uint_t) duk_get_current_magic(thr); - - /* Lightfuncs are currently supported by coercing to a temporary - * Function object; changes will be allowed (the coerced value is - * extensible) but will be lost. Same for plain buffers. - */ - obj = duk_require_hobject_promote_mask(thr, 0, DUK_TYPE_MASK_LIGHTFUNC | DUK_TYPE_MASK_BUFFER); - DUK_ASSERT(obj != NULL); - key = duk_to_property_key_hstring(thr, 1); - (void) duk_require_hobject(thr, 2); - - DUK_ASSERT(obj != NULL); - DUK_ASSERT(key != NULL); - DUK_ASSERT(duk_get_hobject(thr, 2) != NULL); - - /* - * Validate and convert argument property descriptor (an ECMAScript - * object) into a set of defprop_flags and possibly property value, - * getter, and/or setter values on the value stack. - * - * Lightfunc set/get values are coerced to full Functions. - */ - - duk_hobject_prepare_property_descriptor(thr, 2 /*idx_desc*/, &defprop_flags, &idx_value, &get, &set); - - /* - * Use Object.defineProperty() helper for the actual operation. - */ - - DUK_ASSERT(magic == 0U || magic == 1U); - throw_flag = magic ^ 1U; - ret = duk_hobject_define_property_helper(thr, defprop_flags, obj, key, idx_value, get, set, throw_flag); - - /* Ignore the normalize/validate helper outputs on the value stack, - * they're popped automatically. - */ - - if (magic == 0U) { - /* Object.defineProperty(): return target object. */ - duk_push_hobject(thr, obj); - } else { - /* Reflect.defineProperty(): return success/fail. */ - duk_push_boolean(thr, ret); - } - return 1; -} -#endif /* DUK_USE_OBJECT_BUILTIN || DUK_USE_REFLECT_BUILTIN */ - -#if defined(DUK_USE_OBJECT_BUILTIN) || defined(DUK_USE_REFLECT_BUILTIN) -DUK_INTERNAL duk_ret_t duk_bi_object_constructor_get_own_property_descriptor(duk_hthread *thr) { - DUK_ASSERT_TOP(thr, 2); - - /* ES2015 Section 19.1.2.6, step 1 */ - if (duk_get_current_magic(thr) == 0) { - duk_to_object(thr, 0); - } - - /* [ obj key ] */ - - duk_hobject_object_get_own_property_descriptor(thr, -2); - return 1; -} -#endif /* DUK_USE_OBJECT_BUILTIN || DUK_USE_REFLECT_BUILTIN */ - -#if defined(DUK_USE_OBJECT_BUILTIN) || defined(DUK_USE_REFLECT_BUILTIN) -DUK_INTERNAL duk_ret_t duk_bi_object_constructor_is_extensible(duk_hthread *thr) { - /* - * magic = 0: Object.isExtensible() - * magic = 1: Reflect.isExtensible() - */ - - duk_hobject *h; - - if (duk_get_current_magic(thr) == 0) { - h = duk_get_hobject(thr, 0); - } else { - /* Reflect.isExtensible(): throw if non-object, but we accept lightfuncs - * and plain buffers here because they pretend to be objects. - */ - h = duk_require_hobject_accept_mask(thr, 0, DUK_TYPE_MASK_LIGHTFUNC | DUK_TYPE_MASK_BUFFER); - } - - duk_push_boolean(thr, (h != NULL) && DUK_HOBJECT_HAS_EXTENSIBLE(h)); - return 1; -} -#endif /* DUK_USE_OBJECT_BUILTIN || DUK_USE_REFLECT_BUILTIN */ - -#if defined(DUK_USE_OBJECT_BUILTIN) || defined(DUK_USE_REFLECT_BUILTIN) -/* Shared helper for various key/symbol listings, magic: - * 0=Object.keys() - * 1=Object.getOwnPropertyNames(), - * 2=Object.getOwnPropertySymbols(), - * 3=Reflect.ownKeys() - */ -DUK_LOCAL const duk_small_uint_t duk__object_keys_enum_flags[4] = { - /* Object.keys() */ - DUK_ENUM_OWN_PROPERTIES_ONLY | DUK_ENUM_NO_PROXY_BEHAVIOR, - - /* Object.getOwnPropertyNames() */ - DUK_ENUM_INCLUDE_NONENUMERABLE | DUK_ENUM_OWN_PROPERTIES_ONLY | DUK_ENUM_NO_PROXY_BEHAVIOR, - - /* Object.getOwnPropertySymbols() */ - DUK_ENUM_INCLUDE_SYMBOLS | DUK_ENUM_OWN_PROPERTIES_ONLY | DUK_ENUM_EXCLUDE_STRINGS | DUK_ENUM_INCLUDE_NONENUMERABLE | - DUK_ENUM_NO_PROXY_BEHAVIOR, - - /* Reflect.ownKeys() */ - DUK_ENUM_INCLUDE_SYMBOLS | DUK_ENUM_OWN_PROPERTIES_ONLY | DUK_ENUM_INCLUDE_NONENUMERABLE | DUK_ENUM_NO_PROXY_BEHAVIOR -}; - -DUK_INTERNAL duk_ret_t duk_bi_object_constructor_keys_shared(duk_hthread *thr) { - duk_hobject *obj; -#if defined(DUK_USE_ES6_PROXY) - duk_hobject *h_proxy_target; - duk_hobject *h_proxy_handler; - duk_hobject *h_trap_result; -#endif - duk_small_uint_t enum_flags; - duk_int_t magic; - - DUK_ASSERT_TOP(thr, 1); - - magic = duk_get_current_magic(thr); - if (magic == 3) { - /* ES2015 Section 26.1.11 requires a TypeError for non-objects. Lightfuncs - * and plain buffers pretend to be objects, so accept those too. - */ - obj = duk_require_hobject_promote_mask(thr, 0, DUK_TYPE_MASK_LIGHTFUNC | DUK_TYPE_MASK_BUFFER); - } else { - /* ES2015: ToObject coerce. */ - obj = duk_to_hobject(thr, 0); - } - DUK_ASSERT(obj != NULL); - DUK_UNREF(obj); - - /* XXX: proxy chains */ - -#if defined(DUK_USE_ES6_PROXY) - /* XXX: better sharing of code between proxy target call sites */ - if (DUK_LIKELY(!duk_hobject_proxy_check(obj, &h_proxy_target, &h_proxy_handler))) { - goto skip_proxy; - } - - duk_push_hobject(thr, h_proxy_handler); - if (!duk_get_prop_stridx_short(thr, -1, DUK_STRIDX_OWN_KEYS)) { - /* Careful with reachability here: don't pop 'obj' before pushing - * proxy target. - */ - DUK_DDD(DUK_DDDPRINT("no ownKeys trap, get keys of target instead")); - duk_pop_2(thr); - duk_push_hobject(thr, h_proxy_target); - duk_replace(thr, 0); - DUK_ASSERT_TOP(thr, 1); - goto skip_proxy; - } - - /* [ obj handler trap ] */ - duk_insert(thr, -2); - duk_push_hobject(thr, h_proxy_target); /* -> [ obj trap handler target ] */ - duk_call_method(thr, 1 /*nargs*/); /* -> [ obj trap_result ] */ - h_trap_result = duk_require_hobject(thr, -1); - DUK_UNREF(h_trap_result); - - magic = duk_get_current_magic(thr); - DUK_ASSERT(magic >= 0 && magic < (duk_int_t) (sizeof(duk__object_keys_enum_flags) / sizeof(duk_small_uint_t))); - enum_flags = duk__object_keys_enum_flags[magic]; - - duk_proxy_ownkeys_postprocess(thr, h_proxy_target, enum_flags); - return 1; - -skip_proxy: -#endif /* DUK_USE_ES6_PROXY */ - - DUK_ASSERT_TOP(thr, 1); - magic = duk_get_current_magic(thr); - DUK_ASSERT(magic >= 0 && magic < (duk_int_t) (sizeof(duk__object_keys_enum_flags) / sizeof(duk_small_uint_t))); - enum_flags = duk__object_keys_enum_flags[magic]; - return duk_hobject_get_enumerated_keys(thr, enum_flags); -} -#endif /* DUK_USE_OBJECT_BUILTIN || DUK_USE_REFLECT_BUILTIN */ - -#if defined(DUK_USE_OBJECT_BUILTIN) || defined(DUK_USE_REFLECT_BUILTIN) -DUK_INTERNAL duk_ret_t duk_bi_object_constructor_prevent_extensions(duk_hthread *thr) { - /* - * magic = 0: Object.preventExtensions() - * magic = 1: Reflect.preventExtensions() - */ - - duk_hobject *h; - duk_uint_t mask; - duk_int_t magic; - - magic = duk_get_current_magic(thr); - - /* Silent success for lightfuncs and plain buffers always. */ - mask = DUK_TYPE_MASK_LIGHTFUNC | DUK_TYPE_MASK_BUFFER; - - /* Object.preventExtensions() silent success for non-object. */ - if (magic == 0) { - mask |= DUK_TYPE_MASK_UNDEFINED | DUK_TYPE_MASK_NULL | DUK_TYPE_MASK_BOOLEAN | DUK_TYPE_MASK_NUMBER | - DUK_TYPE_MASK_STRING | DUK_TYPE_MASK_POINTER; - } - - if (duk_check_type_mask(thr, 0, mask)) { - /* Not an object, already non-extensible so always success. */ - goto done; - } - h = duk_require_hobject(thr, 0); - DUK_ASSERT(h != NULL); - - DUK_HOBJECT_CLEAR_EXTENSIBLE(h); - - /* A non-extensible object cannot gain any more properties, - * so this is a good time to compact. - */ - duk_hobject_compact_props(thr, h); - -done: - if (magic == 1) { - duk_push_true(thr); - } - return 1; -} -#endif /* DUK_USE_OBJECT_BUILTIN || DUK_USE_REFLECT_BUILTIN */ - -/* - * __defineGetter__, __defineSetter__, __lookupGetter__, __lookupSetter__ - */ - -#if defined(DUK_USE_ES8) -DUK_INTERNAL duk_ret_t duk_bi_object_prototype_defineaccessor(duk_hthread *thr) { - duk_push_this(thr); - duk_insert(thr, 0); - duk_to_object(thr, 0); - duk_require_callable(thr, 2); - - /* [ ToObject(this) key getter/setter ] */ - - /* ToPropertyKey() coercion is not needed, duk_def_prop() does it. */ - duk_def_prop(thr, - 0, - DUK_DEFPROP_SET_ENUMERABLE | DUK_DEFPROP_SET_CONFIGURABLE | - (duk_get_current_magic(thr) ? DUK_DEFPROP_HAVE_SETTER : DUK_DEFPROP_HAVE_GETTER)); - return 0; -} -DUK_INTERNAL duk_ret_t duk_bi_object_prototype_lookupaccessor(duk_hthread *thr) { - duk_uint_t sanity; - - duk_push_this(thr); - duk_to_object(thr, -1); - - /* XXX: Prototype walk (with sanity) should be a core property - * operation, could add a flag to e.g. duk_get_prop_desc(). - */ - - /* ToPropertyKey() coercion is not needed, duk_get_prop_desc() does it. */ - sanity = DUK_HOBJECT_PROTOTYPE_CHAIN_SANITY; - while (!duk_is_undefined(thr, -1)) { - /* [ key obj ] */ - duk_dup(thr, 0); - duk_get_prop_desc(thr, 1, 0 /*flags*/); - if (!duk_is_undefined(thr, -1)) { - duk_get_prop_stridx(thr, -1, (duk_get_current_magic(thr) != 0 ? DUK_STRIDX_SET : DUK_STRIDX_GET)); - return 1; - } - duk_pop(thr); - - if (DUK_UNLIKELY(sanity-- == 0)) { - DUK_ERROR_RANGE(thr, DUK_STR_PROTOTYPE_CHAIN_LIMIT); - DUK_WO_NORETURN(return 0;); - } - - duk_get_prototype(thr, -1); - duk_remove(thr, -2); - } - return 1; -} -#endif /* DUK_USE_ES8 */ -#line 1 "duk_bi_performance.c" -/* - * High resolution time API (performance.now() et al) - * - * API specification: https://encoding.spec.whatwg.org/#ap://www.w3.org/TR/hr-time/ - */ - -/* #include duk_internal.h -> already included */ - -#if defined(DUK_USE_PERFORMANCE_BUILTIN) -DUK_INTERNAL duk_ret_t duk_bi_performance_now(duk_hthread *thr) { - /* From API spec: - * The DOMHighResTimeStamp type is used to store a time value in - * milliseconds, measured relative from the time origin, global - * monotonic clock, or a time value that represents a duration - * between two DOMHighResTimeStamp's. - */ - duk_push_number(thr, duk_time_get_monotonic_time(thr)); - return 1; -} - -#if 0 /* Missing until semantics decided. */ -DUK_INTERNAL duk_ret_t duk_bi_performance_timeorigin_getter(duk_hthread *thr) { - /* No decision yet how to handle timeOrigins, e.g. should one be - * initialized per heap, or per global object set. See - * https://www.w3.org/TR/hr-time/#time-origin. - */ - duk_push_uint(thr, 0); - return 1; -} -#endif /* 0 */ -#endif /* DUK_USE_PERFORMANCE_BUILTIN */ -#line 1 "duk_bi_pointer.c" -/* - * Pointer built-ins - */ - -/* #include duk_internal.h -> already included */ - -/* - * Constructor - */ - -DUK_INTERNAL duk_ret_t duk_bi_pointer_constructor(duk_hthread *thr) { - /* XXX: this behavior is quite useless now; it would be nice to be able - * to create pointer values from e.g. numbers or strings. Numbers are - * problematic on 64-bit platforms though. Hex encoded strings? - */ - if (duk_get_top(thr) == 0) { - duk_push_pointer(thr, NULL); - } else { - duk_to_pointer(thr, 0); - } - DUK_ASSERT(duk_is_pointer(thr, 0)); - duk_set_top(thr, 1); - - if (duk_is_constructor_call(thr)) { - (void) duk_push_object_helper(thr, - DUK_HOBJECT_FLAG_EXTENSIBLE | DUK_HOBJECT_FLAG_FASTREFS | - DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_POINTER), - DUK_BIDX_POINTER_PROTOTYPE); - - /* Pointer object internal value is immutable. */ - duk_dup_0(thr); - duk_xdef_prop_stridx_short(thr, -2, DUK_STRIDX_INT_VALUE, DUK_PROPDESC_FLAGS_NONE); - } - /* Note: unbalanced stack on purpose */ - - return 1; -} - -/* - * toString(), valueOf() - */ - -DUK_INTERNAL duk_ret_t duk_bi_pointer_prototype_tostring_shared(duk_hthread *thr) { - duk_tval *tv; - duk_small_int_t to_string = duk_get_current_magic(thr); - - duk_push_this(thr); - tv = duk_require_tval(thr, -1); - DUK_ASSERT(tv != NULL); - - if (DUK_TVAL_IS_POINTER(tv)) { - /* nop */ - } else if (DUK_TVAL_IS_OBJECT(tv)) { - duk_hobject *h = DUK_TVAL_GET_OBJECT(tv); - DUK_ASSERT(h != NULL); - - /* Must be a "pointer object", i.e. class "Pointer" */ - if (DUK_HOBJECT_GET_CLASS_NUMBER(h) != DUK_HOBJECT_CLASS_POINTER) { - goto type_error; - } - - duk_xget_owndataprop_stridx_short(thr, -1, DUK_STRIDX_INT_VALUE); - } else { - goto type_error; - } - - if (to_string) { - duk_to_string(thr, -1); - } - return 1; - -type_error: - DUK_DCERROR_TYPE_INVALID_ARGS(thr); -} -#line 1 "duk_bi_promise.c" -/* - * Promise built-in - */ - -/* #include duk_internal.h -> already included */ - -#if defined(DUK_USE_PROMISE_BUILTIN) - -DUK_INTERNAL duk_ret_t duk_bi_promise_constructor(duk_hthread *thr) { - DUK_ERROR_TYPE(thr, "unimplemented"); - DUK_WO_NORETURN(return 0;); -} - -DUK_INTERNAL duk_ret_t duk_bi_promise_all(duk_hthread *thr) { - DUK_ERROR_TYPE(thr, "unimplemented"); - DUK_WO_NORETURN(return 0;); -} - -DUK_INTERNAL duk_ret_t duk_bi_promise_race(duk_hthread *thr) { - DUK_ERROR_TYPE(thr, "unimplemented"); - DUK_WO_NORETURN(return 0;); -} - -DUK_INTERNAL duk_ret_t duk_bi_promise_reject(duk_hthread *thr) { - DUK_ERROR_TYPE(thr, "unimplemented"); - DUK_WO_NORETURN(return 0;); -} - -DUK_INTERNAL duk_ret_t duk_bi_promise_resolve(duk_hthread *thr) { - DUK_ERROR_TYPE(thr, "unimplemented"); - DUK_WO_NORETURN(return 0;); -} - -DUK_INTERNAL duk_ret_t duk_bi_promise_catch(duk_hthread *thr) { - DUK_ERROR_TYPE(thr, "unimplemented"); - DUK_WO_NORETURN(return 0;); -} - -DUK_INTERNAL duk_ret_t duk_bi_promise_then(duk_hthread *thr) { - DUK_ERROR_TYPE(thr, "unimplemented"); - DUK_WO_NORETURN(return 0;); -} - -#endif /* DUK_USE_PROMISE_BUILTIN */ -#line 1 "duk_bi_proxy.c" -/* - * Proxy built-in (ES2015) - */ - -/* #include duk_internal.h -> already included */ - -#if defined(DUK_USE_ES6_PROXY) -/* Post-process a Proxy ownKeys() result at stack top. Push a cleaned up - * array of valid result keys (strings or symbols). TypeError for invalid - * values. Flags are shared with duk_enum(). - */ -DUK_INTERNAL void duk_proxy_ownkeys_postprocess(duk_hthread *thr, duk_hobject *h_proxy_target, duk_uint_t flags) { - duk_uarridx_t i, len, idx; - duk_propdesc desc; - - DUK_CTX_ASSERT_VALID(thr); - DUK_ASSERT(h_proxy_target != NULL); - - len = (duk_uarridx_t) duk_get_length(thr, -1); - idx = 0; - duk_push_array(thr); - /* XXX: preallocated dense array, fill in directly */ - for (i = 0; i < len; i++) { - duk_hstring *h; - - /* [ obj trap_result res_arr ] */ - (void) duk_get_prop_index(thr, -2, i); - h = duk_get_hstring(thr, -1); - if (h == NULL) { - DUK_ERROR_TYPE_INVALID_TRAP_RESULT(thr); - DUK_WO_NORETURN(return;); - } - - if (!(flags & DUK_ENUM_INCLUDE_NONENUMERABLE)) { - /* No support for 'getOwnPropertyDescriptor' trap yet, - * so check enumerability always from target object - * descriptor. - */ - if (duk_hobject_get_own_propdesc(thr, h_proxy_target, duk_known_hstring(thr, -1), &desc, 0 /*flags*/)) { - if ((desc.flags & DUK_PROPDESC_FLAG_ENUMERABLE) == 0) { - DUK_DDD(DUK_DDDPRINT("ignore non-enumerable property: %!T", duk_get_tval(thr, -1))); - goto skip_key; - } - } else { - DUK_DDD(DUK_DDDPRINT("ignore non-existent property: %!T", duk_get_tval(thr, -1))); - goto skip_key; - } - } - if (DUK_UNLIKELY(DUK_HSTRING_HAS_SYMBOL(h))) { - if (!(flags & DUK_ENUM_INCLUDE_SYMBOLS)) { - DUK_DDD(DUK_DDDPRINT("ignore symbol property: %!T", duk_get_tval(thr, -1))); - goto skip_key; - } - if (DUK_HSTRING_HAS_HIDDEN(h) && !(flags & DUK_ENUM_INCLUDE_HIDDEN)) { - DUK_DDD(DUK_DDDPRINT("ignore hidden symbol property: %!T", duk_get_tval(thr, -1))); - goto skip_key; - } - } else { - if (flags & DUK_ENUM_EXCLUDE_STRINGS) { - DUK_DDD(DUK_DDDPRINT("ignore string property: %!T", duk_get_tval(thr, -1))); - goto skip_key; - } - } - - /* [ obj trap_result res_arr propname ] */ - duk_push_uarridx(thr, idx++); - duk_insert(thr, -2); - duk_def_prop(thr, -3, DUK_DEFPROP_HAVE_VALUE | DUK_DEFPROP_SET_WEC); - continue; - - skip_key: - duk_pop(thr); - continue; - } - - /* XXX: Missing trap result validation for non-configurable target keys - * (must be present), for non-extensible target all target keys must be - * present and no extra keys can be present. - * http://www.ecma-international.org/ecma-262/6.0/#sec-proxy-object-internal-methods-and-internal-slots-ownpropertykeys - */ - - /* XXX: The key enumerability check should trigger the "getOwnPropertyDescriptor" - * trap which has not yet been implemented. In the absence of such a trap, - * the enumerability should be checked from the target object; this is - * handled above. - */ -} -#endif /* DUK_USE_ES6_PROXY */ - -#if defined(DUK_USE_ES6_PROXY) -DUK_INTERNAL duk_ret_t duk_bi_proxy_constructor(duk_hthread *thr) { - DUK_ASSERT_TOP(thr, 2); /* [ target handler ] */ - - duk_require_constructor_call(thr); - duk_push_proxy(thr, 0 /*flags*/); /* [ target handler ] -> [ proxy ] */ - return 1; /* replacement */ -} -#endif /* DUK_USE_ES6_PROXY */ -#line 1 "duk_bi_reflect.c" -/* - * 'Reflect' built-in (ES2016 Section 26.1) - * http://www.ecma-international.org/ecma-262/7.0/#sec-reflect-object - * - * Many Reflect built-in functions are provided by shared helpers in - * duk_bi_object.c or duk_bi_function.c. - */ - -/* #include duk_internal.h -> already included */ - -#if defined(DUK_USE_REFLECT_BUILTIN) -DUK_INTERNAL duk_ret_t duk_bi_reflect_object_delete_property(duk_hthread *thr) { - duk_tval *tv_obj; - duk_tval *tv_key; - duk_bool_t ret; - - DUK_ASSERT_TOP(thr, 2); - (void) duk_require_hobject(thr, 0); - (void) duk_to_string(thr, 1); - - /* [ target key ] */ - - DUK_ASSERT(thr != NULL); - tv_obj = DUK_GET_TVAL_POSIDX(thr, 0); - tv_key = DUK_GET_TVAL_POSIDX(thr, 1); - ret = duk_hobject_delprop(thr, tv_obj, tv_key, 0 /*throw_flag*/); - duk_push_boolean(thr, ret); - return 1; -} - -DUK_INTERNAL duk_ret_t duk_bi_reflect_object_get(duk_hthread *thr) { - duk_tval *tv_obj; - duk_tval *tv_key; - duk_idx_t nargs; - - DUK_ASSERT(thr != NULL); - nargs = duk_get_top_require_min(thr, 2 /*min_top*/); - (void) duk_require_hobject(thr, 0); - (void) duk_to_string(thr, 1); - if (nargs >= 3 && !duk_strict_equals(thr, 0, 2)) { - /* XXX: [[Get]] receiver currently unsupported */ - DUK_ERROR_UNSUPPORTED(thr); - DUK_WO_NORETURN(return 0;); - } - - /* [ target key receiver? ...? ] */ - - tv_obj = DUK_GET_TVAL_POSIDX(thr, 0); - tv_key = DUK_GET_TVAL_POSIDX(thr, 1); - (void) duk_hobject_getprop(thr, tv_obj, tv_key); /* This could also be a duk_get_prop(). */ - return 1; -} - -DUK_INTERNAL duk_ret_t duk_bi_reflect_object_has(duk_hthread *thr) { - duk_tval *tv_obj; - duk_tval *tv_key; - duk_bool_t ret; - - DUK_ASSERT(thr != NULL); - DUK_ASSERT_TOP(thr, 2); - (void) duk_require_hobject(thr, 0); - (void) duk_to_string(thr, 1); - - /* [ target key ] */ - - tv_obj = DUK_GET_TVAL_POSIDX(thr, 0); - tv_key = DUK_GET_TVAL_POSIDX(thr, 1); - ret = duk_hobject_hasprop(thr, tv_obj, tv_key); - duk_push_boolean(thr, ret); - return 1; -} - -DUK_INTERNAL duk_ret_t duk_bi_reflect_object_set(duk_hthread *thr) { - duk_tval *tv_obj; - duk_tval *tv_key; - duk_tval *tv_val; - duk_idx_t nargs; - duk_bool_t ret; - - DUK_ASSERT(thr != NULL); - nargs = duk_get_top_require_min(thr, 3 /*min_top*/); - (void) duk_require_hobject(thr, 0); - (void) duk_to_string(thr, 1); - if (nargs >= 4 && !duk_strict_equals(thr, 0, 3)) { - /* XXX: [[Set]] receiver currently unsupported */ - DUK_ERROR_UNSUPPORTED(thr); - DUK_WO_NORETURN(return 0;); - } - - /* [ target key value receiver? ...? ] */ - - tv_obj = DUK_GET_TVAL_POSIDX(thr, 0); - tv_key = DUK_GET_TVAL_POSIDX(thr, 1); - tv_val = DUK_GET_TVAL_POSIDX(thr, 2); - ret = duk_hobject_putprop(thr, tv_obj, tv_key, tv_val, 0 /*throw_flag*/); - duk_push_boolean(thr, ret); - return 1; -} -#endif /* DUK_USE_REFLECT_BUILTIN */ -#line 1 "duk_bi_regexp.c" -/* - * RegExp built-ins - */ - -/* #include duk_internal.h -> already included */ - -#if defined(DUK_USE_REGEXP_SUPPORT) - -DUK_LOCAL void duk__get_this_regexp(duk_hthread *thr) { - duk_hobject *h; - - duk_push_this(thr); - h = duk_require_hobject_with_class(thr, -1, DUK_HOBJECT_CLASS_REGEXP); - DUK_ASSERT(h != NULL); - DUK_UNREF(h); - duk_insert(thr, 0); /* prepend regexp to valstack 0 index */ -} - -/* XXX: much to improve (code size) */ -DUK_INTERNAL duk_ret_t duk_bi_regexp_constructor(duk_hthread *thr) { - duk_hobject *h_pattern; - - DUK_ASSERT_TOP(thr, 2); - h_pattern = duk_get_hobject(thr, 0); - - if (!duk_is_constructor_call(thr) && h_pattern != NULL && - DUK_HOBJECT_GET_CLASS_NUMBER(h_pattern) == DUK_HOBJECT_CLASS_REGEXP && duk_is_undefined(thr, 1)) { - /* Called as a function, pattern has [[Class]] "RegExp" and - * flags is undefined -> return object as is. - */ - /* XXX: ES2015 has a NewTarget SameValue() check which is not - * yet implemented. - */ - duk_dup_0(thr); - return 1; - } - - /* Else functionality is identical for function call and constructor - * call. - */ - - if (h_pattern != NULL && DUK_HOBJECT_GET_CLASS_NUMBER(h_pattern) == DUK_HOBJECT_CLASS_REGEXP) { - duk_get_prop_stridx_short(thr, 0, DUK_STRIDX_SOURCE); - if (duk_is_undefined(thr, 1)) { - /* In ES5 one would need to read the flags individually; - * in ES2015 just read .flags. - */ - duk_get_prop_stridx(thr, 0, DUK_STRIDX_FLAGS); - } else { - /* In ES2015 allowed; overrides argument RegExp flags. */ - duk_dup_1(thr); - } - } else { - if (duk_is_undefined(thr, 0)) { - duk_push_hstring_empty(thr); - } else { - duk_dup_0(thr); - duk_to_string(thr, -1); /* Rejects Symbols. */ - } - if (duk_is_undefined(thr, 1)) { - duk_push_hstring_empty(thr); - } else { - duk_dup_1(thr); - duk_to_string(thr, -1); /* Rejects Symbols. */ - } - - /* [ ... pattern flags ] */ - } - - DUK_DDD(DUK_DDDPRINT("RegExp constructor/function call, pattern=%!T, flags=%!T", - (duk_tval *) duk_get_tval(thr, -2), - (duk_tval *) duk_get_tval(thr, -1))); - - /* [ ... pattern flags ] (both uncoerced) */ - - duk_to_string(thr, -2); - duk_to_string(thr, -1); - duk_regexp_compile(thr); - - /* [ ... bytecode escaped_source ] */ - - duk_regexp_create_instance(thr); - - /* [ ... RegExp ] */ - - return 1; -} - -DUK_INTERNAL duk_ret_t duk_bi_regexp_prototype_exec(duk_hthread *thr) { - duk__get_this_regexp(thr); - - /* [ regexp input ] */ - - duk_regexp_match(thr); - - /* [ result ] */ - - return 1; -} - -DUK_INTERNAL duk_ret_t duk_bi_regexp_prototype_test(duk_hthread *thr) { - duk__get_this_regexp(thr); - - /* [ regexp input ] */ - - /* result object is created and discarded; wasteful but saves code space */ - duk_regexp_match(thr); - - /* [ result ] */ - - duk_push_boolean(thr, (duk_is_null(thr, -1) ? 0 : 1)); - - return 1; -} - -DUK_INTERNAL duk_ret_t duk_bi_regexp_prototype_tostring(duk_hthread *thr) { - /* This must be generic in ES2015 and later. */ - DUK_ASSERT_TOP(thr, 0); - duk_push_this(thr); - duk_push_literal(thr, "/"); - duk_get_prop_stridx(thr, 0, DUK_STRIDX_SOURCE); - duk_dup_m2(thr); /* another "/" */ - duk_get_prop_stridx(thr, 0, DUK_STRIDX_FLAGS); - duk_concat(thr, 4); - return 1; -} - -DUK_INTERNAL duk_ret_t duk_bi_regexp_prototype_flags(duk_hthread *thr) { - /* .flags is ES2015 but present even when ES2015 bindings are - * disabled because the constructor relies on it. - */ - duk_uint8_t buf[8]; /* enough for all flags + NUL */ - duk_uint8_t *p = buf; - - /* .flags is generic and works on any object. */ - duk_push_this(thr); - (void) duk_require_hobject(thr, -1); - if (duk_get_prop_stridx_boolean(thr, 0, DUK_STRIDX_GLOBAL, NULL)) { - *p++ = DUK_ASC_LC_G; - } - if (duk_get_prop_stridx_boolean(thr, 0, DUK_STRIDX_IGNORE_CASE, NULL)) { - *p++ = DUK_ASC_LC_I; - } - if (duk_get_prop_stridx_boolean(thr, 0, DUK_STRIDX_MULTILINE, NULL)) { - *p++ = DUK_ASC_LC_M; - } - /* .unicode: to be added */ - /* .sticky: to be added */ - *p++ = DUK_ASC_NUL; - DUK_ASSERT((duk_size_t) (p - buf) <= sizeof(buf)); - - duk_push_string(thr, (const char *) buf); - return 1; -} - -/* Shared helper for providing .source, .global, .multiline, etc getters. */ -DUK_INTERNAL duk_ret_t duk_bi_regexp_prototype_shared_getter(duk_hthread *thr) { - duk_hstring *h_bc; - duk_small_uint_t re_flags; - duk_hobject *h; - duk_int_t magic; - - DUK_ASSERT_TOP(thr, 0); - - duk_push_this(thr); - h = duk_require_hobject(thr, -1); - magic = duk_get_current_magic(thr); - - if (DUK_HOBJECT_GET_CLASS_NUMBER(h) == DUK_HOBJECT_CLASS_REGEXP) { - duk_xget_owndataprop_stridx_short(thr, 0, DUK_STRIDX_INT_SOURCE); - duk_xget_owndataprop_stridx_short(thr, 0, DUK_STRIDX_INT_BYTECODE); - h_bc = duk_require_hstring(thr, -1); - re_flags = (duk_small_uint_t) DUK_HSTRING_GET_DATA(h_bc)[0]; /* Safe even if h_bc length is 0 (= NUL) */ - duk_pop(thr); - } else if (h == thr->builtins[DUK_BIDX_REGEXP_PROTOTYPE]) { - /* In ES2015 and ES2016 a TypeError would be thrown here. - * However, this had real world issues so ES2017 draft - * allows RegExp.prototype specifically, returning '(?:)' - * for .source and undefined for all flags. - */ - if (magic != 16 /* .source */) { - return 0; - } - duk_push_literal(thr, "(?:)"); /* .source handled by switch-case */ - re_flags = 0; - } else { - DUK_DCERROR_TYPE_INVALID_ARGS(thr); - } - - /* [ regexp source ] */ - - switch (magic) { - case 0: { /* global */ - duk_push_boolean(thr, (re_flags & DUK_RE_FLAG_GLOBAL)); - break; - } - case 1: { /* ignoreCase */ - duk_push_boolean(thr, (re_flags & DUK_RE_FLAG_IGNORE_CASE)); - break; - } - case 2: { /* multiline */ - duk_push_boolean(thr, (re_flags & DUK_RE_FLAG_MULTILINE)); - break; - } -#if 0 - /* Don't provide until implemented to avoid interfering with feature - * detection in user code. - */ - case 3: /* sticky */ - case 4: { /* unicode */ - duk_push_false(thr); - break; - } -#endif - default: { /* source */ - /* leave 'source' on top */ - break; - } - } - - return 1; -} - -#endif /* DUK_USE_REGEXP_SUPPORT */ -#line 1 "duk_bi_string.c" -/* - * String built-ins - * - * Most String built-ins must only accept strings (or String objects). - * Symbols, represented internally as strings, must be generally rejected. - * The duk_push_this_coercible_to_string() helper does this automatically. - */ - -/* XXX: There are several limitations in the current implementation for - * strings with >= 0x80000000UL characters. In some cases one would need - * to be able to represent the range [-0xffffffff,0xffffffff] and so on. - * Generally character and byte length are assumed to fit into signed 32 - * bits (< 0x80000000UL). Places with issues are not marked explicitly - * below in all cases, look for signed type usage (duk_int_t etc) for - * offsets/lengths. - */ - -/* #include duk_internal.h -> already included */ - -#if defined(DUK_USE_STRING_BUILTIN) - -/* - * Helpers - */ - -DUK_LOCAL duk_hstring *duk__str_tostring_notregexp(duk_hthread *thr, duk_idx_t idx) { - duk_hstring *h; - - if (duk_get_class_number(thr, idx) == DUK_HOBJECT_CLASS_REGEXP) { - DUK_ERROR_TYPE_INVALID_ARGS(thr); - DUK_WO_NORETURN(return NULL;); - } - h = duk_to_hstring(thr, idx); - DUK_ASSERT(h != NULL); - - return h; -} - -DUK_LOCAL duk_int_t -duk__str_search_shared(duk_hthread *thr, duk_hstring *h_this, duk_hstring *h_search, duk_int_t start_cpos, duk_bool_t backwards) { - duk_int_t cpos; - duk_int_t bpos; - const duk_uint8_t *p_start, *p_end, *p; - const duk_uint8_t *q_start; - duk_int_t q_blen; - duk_uint8_t firstbyte; - duk_uint8_t t; - - cpos = start_cpos; - - /* Empty searchstring always matches; cpos must be clamped here. - * (If q_blen were < 0 due to clamped coercion, it would also be - * caught here.) - */ - q_start = DUK_HSTRING_GET_DATA(h_search); - q_blen = (duk_int_t) DUK_HSTRING_GET_BYTELEN(h_search); - if (q_blen <= 0) { - return cpos; - } - DUK_ASSERT(q_blen > 0); - - bpos = (duk_int_t) duk_heap_strcache_offset_char2byte(thr, h_this, (duk_uint32_t) cpos); - - p_start = DUK_HSTRING_GET_DATA(h_this); - p_end = p_start + DUK_HSTRING_GET_BYTELEN(h_this); - p = p_start + bpos; - - /* This loop is optimized for size. For speed, there should be - * two separate loops, and we should ensure that memcmp() can be - * used without an extra "will searchstring fit" check. Doing - * the preconditioning for 'p' and 'p_end' is easy but cpos - * must be updated if 'p' is wound back (backward scanning). - */ - - firstbyte = q_start[0]; /* leading byte of match string */ - while (p <= p_end && p >= p_start) { - t = *p; - - /* For ECMAScript strings, this check can only match for - * initial UTF-8 bytes (not continuation bytes). For other - * strings all bets are off. - */ - - if ((t == firstbyte) && ((duk_size_t) (p_end - p) >= (duk_size_t) q_blen)) { - DUK_ASSERT(q_blen > 0); - if (duk_memcmp((const void *) p, (const void *) q_start, (size_t) q_blen) == 0) { - return cpos; - } - } - - /* track cpos while scanning */ - if (backwards) { - /* when going backwards, we decrement cpos 'early'; - * 'p' may point to a continuation byte of the char - * at offset 'cpos', but that's OK because we'll - * backtrack all the way to the initial byte. - */ - if ((t & 0xc0) != 0x80) { - cpos--; - } - p--; - } else { - if ((t & 0xc0) != 0x80) { - cpos++; - } - p++; - } - } - - /* Not found. Empty string case is handled specially above. */ - return -1; -} - -/* - * Constructor - */ - -DUK_INTERNAL duk_ret_t duk_bi_string_constructor(duk_hthread *thr) { - duk_hstring *h; - duk_uint_t flags; - - /* String constructor needs to distinguish between an argument not given at all - * vs. given as 'undefined'. We're a vararg function to handle this properly. - */ - - /* XXX: copy current activation flags to thr, including current magic, - * is_constructor_call etc. This takes a few bytes in duk_hthread but - * makes call sites smaller (there are >30 is_constructor_call and get - * current magic call sites. - */ - - if (duk_get_top(thr) == 0) { - duk_push_hstring_empty(thr); - } else { - h = duk_to_hstring_acceptsymbol(thr, 0); - if (DUK_UNLIKELY(DUK_HSTRING_HAS_SYMBOL(h) && !duk_is_constructor_call(thr))) { - duk_push_symbol_descriptive_string(thr, h); - duk_replace(thr, 0); - } - } - duk_to_string(thr, 0); /* catches symbol argument for constructor call */ - DUK_ASSERT(duk_is_string(thr, 0)); - duk_set_top(thr, 1); /* Top may be 1 or larger. */ - - if (duk_is_constructor_call(thr)) { - /* String object internal value is immutable */ - flags = DUK_HOBJECT_FLAG_EXTENSIBLE | DUK_HOBJECT_FLAG_FASTREFS | DUK_HOBJECT_FLAG_EXOTIC_STRINGOBJ | - DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_STRING); - duk_push_object_helper(thr, flags, DUK_BIDX_STRING_PROTOTYPE); - duk_dup_0(thr); - duk_xdef_prop_stridx_short(thr, -2, DUK_STRIDX_INT_VALUE, DUK_PROPDESC_FLAGS_NONE); - } - /* Note: unbalanced stack on purpose */ - - return 1; -} - -DUK_LOCAL duk_ret_t duk__construct_from_codepoints(duk_hthread *thr, duk_bool_t nonbmp) { - duk_bufwriter_ctx bw_alloc; - duk_bufwriter_ctx *bw; - duk_idx_t i, n; - duk_ucodepoint_t cp; - - /* XXX: It would be nice to build the string directly but ToUint16() - * coercion is needed so a generic helper would not be very - * helpful (perhaps coerce the value stack first here and then - * build a string from a duk_tval number sequence in one go?). - */ - - n = duk_get_top(thr); - - bw = &bw_alloc; - DUK_BW_INIT_PUSHBUF(thr, bw, (duk_size_t) n); /* initial estimate for ASCII only codepoints */ - - for (i = 0; i < n; i++) { - /* XXX: could improve bufwriter handling to write multiple codepoints - * with one ensure call but the relative benefit would be quite small. - */ - - if (nonbmp) { - /* ES2015 requires that (1) SameValue(cp, ToInteger(cp)) and - * (2) cp >= 0 and cp <= 0x10ffff. This check does not - * implement the steps exactly but the outcome should be - * the same. - */ - duk_int32_t i32 = 0; - if (!duk_is_whole_get_int32(duk_to_number(thr, i), &i32) || i32 < 0 || i32 > 0x10ffffL) { - DUK_DCERROR_RANGE_INVALID_ARGS(thr); - } - DUK_ASSERT(i32 >= 0 && i32 <= 0x10ffffL); - cp = (duk_ucodepoint_t) i32; - DUK_BW_WRITE_ENSURE_CESU8(thr, bw, cp); - } else { -#if defined(DUK_USE_NONSTD_STRING_FROMCHARCODE_32BIT) - /* ToUint16() coercion is mandatory in the E5.1 specification, but - * this non-compliant behavior makes more sense because we support - * non-BMP codepoints. Don't use CESU-8 because that'd create - * surrogate pairs. - */ - cp = (duk_ucodepoint_t) duk_to_uint32(thr, i); - DUK_BW_WRITE_ENSURE_XUTF8(thr, bw, cp); -#else - cp = (duk_ucodepoint_t) duk_to_uint16(thr, i); - DUK_ASSERT(cp >= 0 && cp <= 0x10ffffL); - DUK_BW_WRITE_ENSURE_CESU8(thr, bw, cp); -#endif - } - } - - DUK_BW_COMPACT(thr, bw); - (void) duk_buffer_to_string(thr, -1); /* Safe, extended UTF-8 or CESU-8 encoded. */ - return 1; -} - -DUK_INTERNAL duk_ret_t duk_bi_string_constructor_from_char_code(duk_hthread *thr) { - return duk__construct_from_codepoints(thr, 0 /*nonbmp*/); -} - -#if defined(DUK_USE_ES6) -DUK_INTERNAL duk_ret_t duk_bi_string_constructor_from_code_point(duk_hthread *thr) { - return duk__construct_from_codepoints(thr, 1 /*nonbmp*/); -} -#endif - -/* - * toString(), valueOf() - */ - -DUK_INTERNAL duk_ret_t duk_bi_string_prototype_to_string(duk_hthread *thr) { - duk_tval *tv; - - duk_push_this(thr); - tv = duk_require_tval(thr, -1); - DUK_ASSERT(tv != NULL); - - if (DUK_TVAL_IS_STRING(tv)) { - /* return as is */ - } else if (DUK_TVAL_IS_OBJECT(tv)) { - duk_hobject *h = DUK_TVAL_GET_OBJECT(tv); - DUK_ASSERT(h != NULL); - - /* Must be a "string object", i.e. class "String" */ - if (DUK_HOBJECT_GET_CLASS_NUMBER(h) != DUK_HOBJECT_CLASS_STRING) { - goto type_error; - } - - duk_xget_owndataprop_stridx_short(thr, -1, DUK_STRIDX_INT_VALUE); - DUK_ASSERT(duk_is_string(thr, -1)); - } else { - goto type_error; - } - - (void) duk_require_hstring_notsymbol(thr, -1); /* Reject symbols (and wrapped symbols). */ - return 1; - -type_error: - DUK_DCERROR_TYPE_INVALID_ARGS(thr); -} - -/* - * Character and charcode access - */ - -DUK_INTERNAL duk_ret_t duk_bi_string_prototype_char_at(duk_hthread *thr) { - duk_hstring *h; - duk_int_t pos; - - /* XXX: faster implementation */ - - h = duk_push_this_coercible_to_string(thr); - DUK_ASSERT(h != NULL); - - pos = duk_to_int(thr, 0); - - if (sizeof(duk_size_t) >= sizeof(duk_uint_t)) { - /* Cast to duk_size_t works in this case: - * - If pos < 0, (duk_size_t) pos will always be - * >= max_charlen, and result will be the empty string - * (see duk_substring()). - * - If pos >= 0, pos + 1 cannot wrap. - */ - DUK_ASSERT((duk_size_t) DUK_INT_MIN >= DUK_HSTRING_MAX_BYTELEN); - DUK_ASSERT((duk_size_t) DUK_INT_MAX + 1U > (duk_size_t) DUK_INT_MAX); - duk_substring(thr, -1, (duk_size_t) pos, (duk_size_t) pos + 1U); - } else { - /* If size_t is smaller than int, explicit bounds checks - * are needed because an int may wrap multiple times. - */ - if (DUK_UNLIKELY(pos < 0 || (duk_uint_t) pos >= (duk_uint_t) DUK_HSTRING_GET_CHARLEN(h))) { - duk_push_hstring_empty(thr); - } else { - duk_substring(thr, -1, (duk_size_t) pos, (duk_size_t) pos + 1U); - } - } - - return 1; -} - -/* Magic: 0=charCodeAt, 1=codePointAt */ -DUK_INTERNAL duk_ret_t duk_bi_string_prototype_char_code_at(duk_hthread *thr) { - duk_int_t pos; - duk_hstring *h; - duk_bool_t clamped; - duk_uint32_t cp; - duk_int_t magic; - - /* XXX: faster implementation */ - - DUK_DDD(DUK_DDDPRINT("arg=%!T", (duk_tval *) duk_get_tval(thr, 0))); - - h = duk_push_this_coercible_to_string(thr); - DUK_ASSERT(h != NULL); - - pos = duk_to_int_clamped_raw(thr, - 0 /*index*/, - 0 /*min(incl)*/, - (duk_int_t) DUK_HSTRING_GET_CHARLEN(h) - 1 /*max(incl)*/, - &clamped /*out_clamped*/); -#if defined(DUK_USE_ES6) - magic = duk_get_current_magic(thr); -#else - DUK_ASSERT(duk_get_current_magic(thr) == 0); - magic = 0; -#endif - if (clamped) { - /* For out-of-bounds indices .charCodeAt() returns NaN and - * .codePointAt() returns undefined. - */ - if (magic != 0) { - return 0; - } - duk_push_nan(thr); - } else { - DUK_ASSERT(pos >= 0); - cp = (duk_uint32_t) duk_hstring_char_code_at_raw(thr, h, (duk_uint_t) pos, (duk_bool_t) magic /*surrogate_aware*/); - duk_push_u32(thr, cp); - } - return 1; -} - -/* - * substring(), substr(), slice() - */ - -/* XXX: any chance of merging these three similar but still slightly - * different algorithms so that footprint would be reduced? - */ - -DUK_INTERNAL duk_ret_t duk_bi_string_prototype_substring(duk_hthread *thr) { - duk_hstring *h; - duk_int_t start_pos, end_pos; - duk_int_t len; - - h = duk_push_this_coercible_to_string(thr); - DUK_ASSERT(h != NULL); - len = (duk_int_t) DUK_HSTRING_GET_CHARLEN(h); - - /* [ start end str ] */ - - start_pos = duk_to_int_clamped(thr, 0, 0, len); - if (duk_is_undefined(thr, 1)) { - end_pos = len; - } else { - end_pos = duk_to_int_clamped(thr, 1, 0, len); - } - DUK_ASSERT(start_pos >= 0 && start_pos <= len); - DUK_ASSERT(end_pos >= 0 && end_pos <= len); - - if (start_pos > end_pos) { - duk_int_t tmp = start_pos; - start_pos = end_pos; - end_pos = tmp; - } - - DUK_ASSERT(end_pos >= start_pos); - - duk_substring(thr, -1, (duk_size_t) start_pos, (duk_size_t) end_pos); - return 1; -} - -#if defined(DUK_USE_SECTION_B) -DUK_INTERNAL duk_ret_t duk_bi_string_prototype_substr(duk_hthread *thr) { - duk_hstring *h; - duk_int_t start_pos, end_pos; - duk_int_t len; - - /* Unlike non-obsolete String calls, substr() algorithm in E5.1 - * specification will happily coerce undefined and null to strings - * ("undefined" and "null"). - */ - duk_push_this(thr); - h = duk_to_hstring_m1(thr); /* Reject Symbols. */ - DUK_ASSERT(h != NULL); - len = (duk_int_t) DUK_HSTRING_GET_CHARLEN(h); - - /* [ start length str ] */ - - /* The implementation for computing of start_pos and end_pos differs - * from the standard algorithm, but is intended to result in the exactly - * same behavior. This is not always obvious. - */ - - /* combines steps 2 and 5; -len ensures max() not needed for step 5 */ - start_pos = duk_to_int_clamped(thr, 0, -len, len); - if (start_pos < 0) { - start_pos = len + start_pos; - } - DUK_ASSERT(start_pos >= 0 && start_pos <= len); - - /* combines steps 3, 6; step 7 is not needed */ - if (duk_is_undefined(thr, 1)) { - end_pos = len; - } else { - DUK_ASSERT(start_pos <= len); - end_pos = start_pos + duk_to_int_clamped(thr, 1, 0, len - start_pos); - } - DUK_ASSERT(start_pos >= 0 && start_pos <= len); - DUK_ASSERT(end_pos >= 0 && end_pos <= len); - DUK_ASSERT(end_pos >= start_pos); - - duk_substring(thr, -1, (duk_size_t) start_pos, (duk_size_t) end_pos); - return 1; -} -#endif /* DUK_USE_SECTION_B */ - -DUK_INTERNAL duk_ret_t duk_bi_string_prototype_slice(duk_hthread *thr) { - duk_hstring *h; - duk_int_t start_pos, end_pos; - duk_int_t len; - - h = duk_push_this_coercible_to_string(thr); - DUK_ASSERT(h != NULL); - len = (duk_int_t) DUK_HSTRING_GET_CHARLEN(h); - - /* [ start end str ] */ - - start_pos = duk_to_int_clamped(thr, 0, -len, len); - if (start_pos < 0) { - start_pos = len + start_pos; - } - if (duk_is_undefined(thr, 1)) { - end_pos = len; - } else { - end_pos = duk_to_int_clamped(thr, 1, -len, len); - if (end_pos < 0) { - end_pos = len + end_pos; - } - } - DUK_ASSERT(start_pos >= 0 && start_pos <= len); - DUK_ASSERT(end_pos >= 0 && end_pos <= len); - - if (end_pos < start_pos) { - end_pos = start_pos; - } - - DUK_ASSERT(end_pos >= start_pos); - - duk_substring(thr, -1, (duk_size_t) start_pos, (duk_size_t) end_pos); - return 1; -} - -/* - * Case conversion - */ - -DUK_INTERNAL duk_ret_t duk_bi_string_prototype_caseconv_shared(duk_hthread *thr) { - duk_small_int_t uppercase = duk_get_current_magic(thr); - - (void) duk_push_this_coercible_to_string(thr); - duk_unicode_case_convert_string(thr, (duk_bool_t) uppercase); - return 1; -} - -/* - * indexOf() and lastIndexOf() - */ - -DUK_INTERNAL duk_ret_t duk_bi_string_prototype_indexof_shared(duk_hthread *thr) { - duk_hstring *h_this; - duk_hstring *h_search; - duk_int_t clen_this; - duk_int_t cpos; - duk_small_uint_t is_lastindexof = (duk_small_uint_t) duk_get_current_magic(thr); /* 0=indexOf, 1=lastIndexOf */ - - h_this = duk_push_this_coercible_to_string(thr); - DUK_ASSERT(h_this != NULL); - clen_this = (duk_int_t) DUK_HSTRING_GET_CHARLEN(h_this); - - h_search = duk_to_hstring(thr, 0); - DUK_ASSERT(h_search != NULL); - - duk_to_number(thr, 1); - if (duk_is_nan(thr, 1) && is_lastindexof) { - /* indexOf: NaN should cause pos to be zero. - * lastIndexOf: NaN should cause pos to be +Infinity - * (and later be clamped to len). - */ - cpos = clen_this; - } else { - cpos = duk_to_int_clamped(thr, 1, 0, clen_this); - } - - cpos = duk__str_search_shared(thr, h_this, h_search, cpos, is_lastindexof /*backwards*/); - duk_push_int(thr, cpos); - return 1; -} - -/* - * replace() - */ - -/* XXX: the current implementation works but is quite clunky; it compiles - * to almost 1,4kB of x86 code so it needs to be simplified (better approach, - * shared helpers, etc). Some ideas for refactoring: - * - * - a primitive to convert a string into a regexp matcher (reduces matching - * code at the cost of making matching much slower) - * - use replace() as a basic helper for match() and split(), which are both - * much simpler - * - API call to get_prop and to_boolean - */ - -DUK_INTERNAL duk_ret_t duk_bi_string_prototype_replace(duk_hthread *thr) { - duk_hstring *h_input; - duk_hstring *h_match; - duk_hstring *h_search; - duk_hobject *h_re; - duk_bufwriter_ctx bw_alloc; - duk_bufwriter_ctx *bw; -#if defined(DUK_USE_REGEXP_SUPPORT) - duk_bool_t is_regexp; - duk_bool_t is_global; -#endif - duk_bool_t is_repl_func; - duk_uint32_t match_start_coff, match_start_boff; -#if defined(DUK_USE_REGEXP_SUPPORT) - duk_int_t match_caps; -#endif - duk_uint32_t prev_match_end_boff; - const duk_uint8_t *r_start, *r_end, *r; /* repl string scan */ - duk_size_t tmp_sz; - - DUK_ASSERT_TOP(thr, 2); - h_input = duk_push_this_coercible_to_string(thr); - DUK_ASSERT(h_input != NULL); - - bw = &bw_alloc; - DUK_BW_INIT_PUSHBUF(thr, bw, DUK_HSTRING_GET_BYTELEN(h_input)); /* input size is good output starting point */ - - DUK_ASSERT_TOP(thr, 4); - - /* stack[0] = search value - * stack[1] = replace value - * stack[2] = input string - * stack[3] = result buffer - */ - - h_re = duk_get_hobject_with_class(thr, 0, DUK_HOBJECT_CLASS_REGEXP); - if (h_re) { -#if defined(DUK_USE_REGEXP_SUPPORT) - is_regexp = 1; - is_global = duk_get_prop_stridx_boolean(thr, 0, DUK_STRIDX_GLOBAL, NULL); - - if (is_global) { - /* start match from beginning */ - duk_push_int(thr, 0); - duk_put_prop_stridx_short(thr, 0, DUK_STRIDX_LAST_INDEX); - } -#else /* DUK_USE_REGEXP_SUPPORT */ - DUK_DCERROR_UNSUPPORTED(thr); -#endif /* DUK_USE_REGEXP_SUPPORT */ - } else { - duk_to_string(thr, 0); /* rejects symbols */ -#if defined(DUK_USE_REGEXP_SUPPORT) - is_regexp = 0; - is_global = 0; -#endif - } - - if (duk_is_function(thr, 1)) { - is_repl_func = 1; - r_start = NULL; - r_end = NULL; - } else { - duk_hstring *h_repl; - - is_repl_func = 0; - h_repl = duk_to_hstring(thr, 1); /* reject symbols */ - DUK_ASSERT(h_repl != NULL); - r_start = DUK_HSTRING_GET_DATA(h_repl); - r_end = r_start + DUK_HSTRING_GET_BYTELEN(h_repl); - } - - prev_match_end_boff = 0; - - for (;;) { - /* - * If matching with a regexp: - * - non-global RegExp: lastIndex not touched on a match, zeroed - * on a non-match - * - global RegExp: on match, lastIndex will be updated by regexp - * executor to point to next char after the matching part (so that - * characters in the matching part are not matched again) - * - * If matching with a string: - * - always non-global match, find first occurrence - * - * We need: - * - The character offset of start-of-match for the replacer function - * - The byte offsets for start-of-match and end-of-match to implement - * the replacement values $&, $`, and $', and to copy non-matching - * input string portions (including header and trailer) verbatim. - * - * NOTE: the E5.1 specification is a bit vague how the RegExp should - * behave in the replacement process; e.g. is matching done first for - * all matches (in the global RegExp case) before any replacer calls - * are made? See: test-bi-string-proto-replace.js for discussion. - */ - - DUK_ASSERT_TOP(thr, 4); - -#if defined(DUK_USE_REGEXP_SUPPORT) - if (is_regexp) { - duk_dup_0(thr); - duk_dup_2(thr); - duk_regexp_match(thr); /* [ ... regexp input ] -> [ res_obj ] */ - if (!duk_is_object(thr, -1)) { - duk_pop(thr); - break; - } - - duk_get_prop_stridx_short(thr, -1, DUK_STRIDX_INDEX); - DUK_ASSERT(duk_is_number(thr, -1)); - match_start_coff = duk_get_uint(thr, -1); - duk_pop(thr); - - duk_get_prop_index(thr, -1, 0); - DUK_ASSERT(duk_is_string(thr, -1)); - h_match = duk_known_hstring(thr, -1); - duk_pop(thr); /* h_match is borrowed, remains reachable through match_obj */ - - if (DUK_HSTRING_GET_BYTELEN(h_match) == 0) { - /* This should be equivalent to match() algorithm step 8.f.iii.2: - * detect an empty match and allow it, but don't allow it twice. - */ - duk_uint32_t last_index; - - duk_get_prop_stridx_short(thr, 0, DUK_STRIDX_LAST_INDEX); - last_index = (duk_uint32_t) duk_get_uint(thr, -1); - DUK_DDD(DUK_DDDPRINT("empty match, bump lastIndex: %ld -> %ld", - (long) last_index, - (long) (last_index + 1))); - duk_pop(thr); - duk_push_uint(thr, (duk_uint_t) (last_index + 1)); - duk_put_prop_stridx_short(thr, 0, DUK_STRIDX_LAST_INDEX); - } - - DUK_ASSERT(duk_get_length(thr, -1) <= DUK_INT_MAX); /* string limits */ - match_caps = (duk_int_t) duk_get_length(thr, -1); - } else { -#else /* DUK_USE_REGEXP_SUPPORT */ - { /* unconditionally */ -#endif /* DUK_USE_REGEXP_SUPPORT */ - const duk_uint8_t *p_start, *p_end, *p; /* input string scan */ - const duk_uint8_t *q_start; /* match string */ - duk_size_t p_blen; - duk_size_t q_blen; - -#if defined(DUK_USE_REGEXP_SUPPORT) - DUK_ASSERT(!is_global); /* single match always */ -#endif - - p_start = DUK_HSTRING_GET_DATA(h_input); - p_end = p_start + DUK_HSTRING_GET_BYTELEN(h_input); - p_blen = (duk_size_t) DUK_HSTRING_GET_BYTELEN(h_input); - p = p_start; - - h_search = duk_known_hstring(thr, 0); - q_start = DUK_HSTRING_GET_DATA(h_search); - q_blen = (duk_size_t) DUK_HSTRING_GET_BYTELEN(h_search); - - if (q_blen > p_blen) { - break; /* no match */ - } - - p_end -= q_blen; /* ensure full memcmp() fits in while */ - DUK_ASSERT(p_end >= p); - - match_start_coff = 0; - - while (p <= p_end) { - DUK_ASSERT(p + q_blen <= DUK_HSTRING_GET_DATA(h_input) + DUK_HSTRING_GET_BYTELEN(h_input)); - if (duk_memcmp((const void *) p, (const void *) q_start, (size_t) q_blen) == 0) { - duk_dup_0(thr); - h_match = duk_known_hstring(thr, -1); -#if defined(DUK_USE_REGEXP_SUPPORT) - match_caps = 0; -#endif - goto found; - } - - /* track utf-8 non-continuation bytes */ - if ((p[0] & 0xc0) != 0x80) { - match_start_coff++; - } - p++; - } - - /* not found */ - break; - } - found: - - /* stack[0] = search value - * stack[1] = replace value - * stack[2] = input string - * stack[3] = result buffer - * stack[4] = regexp match OR match string - */ - - match_start_boff = (duk_uint32_t) duk_heap_strcache_offset_char2byte(thr, h_input, match_start_coff); - - tmp_sz = (duk_size_t) (match_start_boff - prev_match_end_boff); - DUK_BW_WRITE_ENSURE_BYTES(thr, bw, DUK_HSTRING_GET_DATA(h_input) + prev_match_end_boff, tmp_sz); - - prev_match_end_boff = match_start_boff + DUK_HSTRING_GET_BYTELEN(h_match); - - if (is_repl_func) { - duk_idx_t idx_args; - duk_hstring *h_repl; - - /* regexp res_obj is at index 4 */ - - duk_dup_1(thr); - idx_args = duk_get_top(thr); - -#if defined(DUK_USE_REGEXP_SUPPORT) - if (is_regexp) { - duk_int_t idx; - duk_require_stack(thr, match_caps + 2); - for (idx = 0; idx < match_caps; idx++) { - /* match followed by capture(s) */ - duk_get_prop_index(thr, 4, (duk_uarridx_t) idx); - } - } else { -#else /* DUK_USE_REGEXP_SUPPORT */ - { /* unconditionally */ -#endif /* DUK_USE_REGEXP_SUPPORT */ - /* match == search string, by definition */ - duk_dup_0(thr); - } - duk_push_uint(thr, (duk_uint_t) match_start_coff); - duk_dup_2(thr); - - /* [ ... replacer match [captures] match_char_offset input ] */ - - duk_call(thr, duk_get_top(thr) - idx_args); - h_repl = duk_to_hstring_m1(thr); /* -> [ ... repl_value ] */ - DUK_ASSERT(h_repl != NULL); - - DUK_BW_WRITE_ENSURE_HSTRING(thr, bw, h_repl); - - duk_pop(thr); /* repl_value */ - } else { - r = r_start; - - while (r < r_end) { - duk_int_t ch1; - duk_int_t ch2; -#if defined(DUK_USE_REGEXP_SUPPORT) - duk_int_t ch3; -#endif - duk_size_t left; - - ch1 = *r++; - if (ch1 != DUK_ASC_DOLLAR) { - goto repl_write; - } - DUK_ASSERT(r <= r_end); - left = (duk_size_t) (r_end - r); - - if (left <= 0) { - goto repl_write; - } - - ch2 = r[0]; - switch (ch2) { - case DUK_ASC_DOLLAR: { - ch1 = (1 << 8) + DUK_ASC_DOLLAR; - goto repl_write; - } - case DUK_ASC_AMP: { - DUK_BW_WRITE_ENSURE_HSTRING(thr, bw, h_match); - r++; - continue; - } - case DUK_ASC_GRAVE: { - tmp_sz = (duk_size_t) match_start_boff; - DUK_BW_WRITE_ENSURE_BYTES(thr, bw, DUK_HSTRING_GET_DATA(h_input), tmp_sz); - r++; - continue; - } - case DUK_ASC_SINGLEQUOTE: { - duk_uint32_t match_end_boff; - - /* Use match charlen instead of bytelen, just in case the input and - * match codepoint encodings would have different lengths. - */ - /* XXX: charlen computed here, and also in char2byte helper. */ - match_end_boff = (duk_uint32_t) duk_heap_strcache_offset_char2byte( - thr, - h_input, - match_start_coff + (duk_uint_fast32_t) DUK_HSTRING_GET_CHARLEN(h_match)); - - tmp_sz = (duk_size_t) (DUK_HSTRING_GET_BYTELEN(h_input) - match_end_boff); - DUK_BW_WRITE_ENSURE_BYTES(thr, bw, DUK_HSTRING_GET_DATA(h_input) + match_end_boff, tmp_sz); - r++; - continue; - } - default: { -#if defined(DUK_USE_REGEXP_SUPPORT) - duk_int_t capnum, captmp, capadv; - /* XXX: optional check, match_caps is zero if no regexp, - * so dollar will be interpreted literally anyway. - */ - - if (!is_regexp) { - goto repl_write; - } - - if (!(ch2 >= DUK_ASC_0 && ch2 <= DUK_ASC_9)) { - goto repl_write; - } - capnum = ch2 - DUK_ASC_0; - capadv = 1; - - if (left >= 2) { - ch3 = r[1]; - if (ch3 >= DUK_ASC_0 && ch3 <= DUK_ASC_9) { - captmp = capnum * 10 + (ch3 - DUK_ASC_0); - if (captmp < match_caps) { - capnum = captmp; - capadv = 2; - } - } - } - - if (capnum > 0 && capnum < match_caps) { - DUK_ASSERT(is_regexp != 0); /* match_caps == 0 without regexps */ - - /* regexp res_obj is at offset 4 */ - duk_get_prop_index(thr, 4, (duk_uarridx_t) capnum); - if (duk_is_string(thr, -1)) { - duk_hstring *h_tmp_str; - - h_tmp_str = duk_known_hstring(thr, -1); - - DUK_BW_WRITE_ENSURE_HSTRING(thr, bw, h_tmp_str); - } else { - /* undefined -> skip (replaced with empty) */ - } - duk_pop(thr); - r += capadv; - continue; - } else { - goto repl_write; - } -#else /* DUK_USE_REGEXP_SUPPORT */ - goto repl_write; /* unconditionally */ -#endif /* DUK_USE_REGEXP_SUPPORT */ - } /* default case */ - } /* switch (ch2) */ - - repl_write: - /* ch1 = (r_increment << 8) + byte */ - - DUK_BW_WRITE_ENSURE_U8(thr, bw, (duk_uint8_t) (ch1 & 0xff)); - r += ch1 >> 8; - } /* while repl */ - } /* if (is_repl_func) */ - - duk_pop(thr); /* pop regexp res_obj or match string */ - -#if defined(DUK_USE_REGEXP_SUPPORT) - if (!is_global) { -#else - { /* unconditionally; is_global==0 */ -#endif - break; - } - } - - /* trailer */ - tmp_sz = (duk_size_t) (DUK_HSTRING_GET_BYTELEN(h_input) - prev_match_end_boff); - DUK_BW_WRITE_ENSURE_BYTES(thr, bw, DUK_HSTRING_GET_DATA(h_input) + prev_match_end_boff, tmp_sz); - - DUK_ASSERT_TOP(thr, 4); - DUK_BW_COMPACT(thr, bw); - (void) duk_buffer_to_string(thr, -1); /* Safe if inputs are safe. */ - return 1; -} - -/* - * split() - */ - -/* XXX: very messy now, but works; clean up, remove unused variables (nomimally - * used so compiler doesn't complain). - */ - -DUK_INTERNAL duk_ret_t duk_bi_string_prototype_split(duk_hthread *thr) { - duk_hstring *h_input; - duk_hstring *h_sep; - duk_uint32_t limit; - duk_uint32_t arr_idx; -#if defined(DUK_USE_REGEXP_SUPPORT) - duk_bool_t is_regexp; -#endif - duk_bool_t matched; /* set to 1 if any match exists (needed for empty input special case) */ - duk_uint32_t prev_match_end_coff, prev_match_end_boff; - duk_uint32_t match_start_boff, match_start_coff; - duk_uint32_t match_end_boff, match_end_coff; - - h_input = duk_push_this_coercible_to_string(thr); - DUK_ASSERT(h_input != NULL); - - duk_push_array(thr); - - if (duk_is_undefined(thr, 1)) { - limit = 0xffffffffUL; - } else { - limit = duk_to_uint32(thr, 1); - } - - if (limit == 0) { - return 1; - } - - /* If the separator is a RegExp, make a "clone" of it. The specification - * algorithm calls [[Match]] directly for specific indices; we emulate this - * by tweaking lastIndex and using a "force global" variant of duk_regexp_match() - * which will use global-style matching even when the RegExp itself is non-global. - */ - - if (duk_is_undefined(thr, 0)) { - /* The spec algorithm first does "R = ToString(separator)" before checking - * whether separator is undefined. Since this is side effect free, we can - * skip the ToString() here. - */ - duk_dup_2(thr); - duk_put_prop_index(thr, 3, 0); - return 1; - } else if (duk_get_hobject_with_class(thr, 0, DUK_HOBJECT_CLASS_REGEXP) != NULL) { -#if defined(DUK_USE_REGEXP_SUPPORT) - duk_push_hobject_bidx(thr, DUK_BIDX_REGEXP_CONSTRUCTOR); - duk_dup_0(thr); - duk_new(thr, 1); /* [ ... RegExp val ] -> [ ... res ] */ - duk_replace(thr, 0); - /* lastIndex is initialized to zero by new RegExp() */ - is_regexp = 1; -#else - DUK_DCERROR_UNSUPPORTED(thr); -#endif - } else { - duk_to_string(thr, 0); -#if defined(DUK_USE_REGEXP_SUPPORT) - is_regexp = 0; -#endif - } - - /* stack[0] = separator (string or regexp) - * stack[1] = limit - * stack[2] = input string - * stack[3] = result array - */ - - prev_match_end_boff = 0; - prev_match_end_coff = 0; - arr_idx = 0; - matched = 0; - - for (;;) { - /* - * The specification uses RegExp [[Match]] to attempt match at specific - * offsets. We don't have such a primitive, so we use an actual RegExp - * and tweak lastIndex. Since the RegExp may be non-global, we use a - * special variant which forces global-like behavior for matching. - */ - - DUK_ASSERT_TOP(thr, 4); - -#if defined(DUK_USE_REGEXP_SUPPORT) - if (is_regexp) { - duk_dup_0(thr); - duk_dup_2(thr); - duk_regexp_match_force_global(thr); /* [ ... regexp input ] -> [ res_obj ] */ - if (!duk_is_object(thr, -1)) { - duk_pop(thr); - break; - } - matched = 1; - - duk_get_prop_stridx_short(thr, -1, DUK_STRIDX_INDEX); - DUK_ASSERT(duk_is_number(thr, -1)); - match_start_coff = duk_get_uint(thr, -1); - match_start_boff = (duk_uint32_t) duk_heap_strcache_offset_char2byte(thr, h_input, match_start_coff); - duk_pop(thr); - - if (match_start_coff == DUK_HSTRING_GET_CHARLEN(h_input)) { - /* don't allow an empty match at the end of the string */ - duk_pop(thr); - break; - } - - duk_get_prop_stridx_short(thr, 0, DUK_STRIDX_LAST_INDEX); - DUK_ASSERT(duk_is_number(thr, -1)); - match_end_coff = duk_get_uint(thr, -1); - match_end_boff = (duk_uint32_t) duk_heap_strcache_offset_char2byte(thr, h_input, match_end_coff); - duk_pop(thr); - - /* empty match -> bump and continue */ - if (prev_match_end_boff == match_end_boff) { - duk_push_uint(thr, (duk_uint_t) (match_end_coff + 1)); - duk_put_prop_stridx_short(thr, 0, DUK_STRIDX_LAST_INDEX); - duk_pop(thr); - continue; - } - } else { -#else /* DUK_USE_REGEXP_SUPPORT */ - { /* unconditionally */ -#endif /* DUK_USE_REGEXP_SUPPORT */ - const duk_uint8_t *p_start, *p_end, *p; /* input string scan */ - const duk_uint8_t *q_start; /* match string */ - duk_size_t q_blen, q_clen; - - p_start = DUK_HSTRING_GET_DATA(h_input); - p_end = p_start + DUK_HSTRING_GET_BYTELEN(h_input); - p = p_start + prev_match_end_boff; - - h_sep = duk_known_hstring(thr, 0); /* symbol already rejected above */ - q_start = DUK_HSTRING_GET_DATA(h_sep); - q_blen = (duk_size_t) DUK_HSTRING_GET_BYTELEN(h_sep); - q_clen = (duk_size_t) DUK_HSTRING_GET_CHARLEN(h_sep); - - p_end -= q_blen; /* ensure full memcmp() fits in while */ - - match_start_coff = prev_match_end_coff; - - if (q_blen == 0) { - /* Handle empty separator case: it will always match, and always - * triggers the check in step 13.c.iii initially. Note that we - * must skip to either end of string or start of first codepoint, - * skipping over any continuation bytes! - * - * Don't allow an empty string to match at the end of the input. - */ - - matched = 1; /* empty separator can always match */ - - match_start_coff++; - p++; - while (p < p_end) { - if ((p[0] & 0xc0) != 0x80) { - goto found; - } - p++; - } - goto not_found; - } - - DUK_ASSERT(q_blen > 0 && q_clen > 0); - while (p <= p_end) { - DUK_ASSERT(p + q_blen <= DUK_HSTRING_GET_DATA(h_input) + DUK_HSTRING_GET_BYTELEN(h_input)); - DUK_ASSERT(q_blen > 0); /* no issues with empty memcmp() */ - if (duk_memcmp((const void *) p, (const void *) q_start, (size_t) q_blen) == 0) { - /* never an empty match, so step 13.c.iii can't be triggered */ - goto found; - } - - /* track utf-8 non-continuation bytes */ - if ((p[0] & 0xc0) != 0x80) { - match_start_coff++; - } - p++; - } - - not_found: - /* not found */ - break; - - found: - matched = 1; - match_start_boff = (duk_uint32_t) (p - p_start); - match_end_coff = (duk_uint32_t) (match_start_coff + q_clen); /* constrained by string length */ - match_end_boff = (duk_uint32_t) (match_start_boff + q_blen); /* ditto */ - - /* empty match (may happen with empty separator) -> bump and continue */ - if (prev_match_end_boff == match_end_boff) { - prev_match_end_boff++; - prev_match_end_coff++; - continue; - } - } /* if (is_regexp) */ - - /* stack[0] = separator (string or regexp) - * stack[1] = limit - * stack[2] = input string - * stack[3] = result array - * stack[4] = regexp res_obj (if is_regexp) - */ - - DUK_DDD(DUK_DDDPRINT("split; match_start b=%ld,c=%ld, match_end b=%ld,c=%ld, prev_end b=%ld,c=%ld", - (long) match_start_boff, - (long) match_start_coff, - (long) match_end_boff, - (long) match_end_coff, - (long) prev_match_end_boff, - (long) prev_match_end_coff)); - - duk_push_lstring(thr, - (const char *) (DUK_HSTRING_GET_DATA(h_input) + prev_match_end_boff), - (duk_size_t) (match_start_boff - prev_match_end_boff)); - duk_put_prop_index(thr, 3, arr_idx); - arr_idx++; - if (arr_idx >= limit) { - goto hit_limit; - } - -#if defined(DUK_USE_REGEXP_SUPPORT) - if (is_regexp) { - duk_size_t i, len; - - len = duk_get_length(thr, 4); - for (i = 1; i < len; i++) { - DUK_ASSERT(i <= DUK_UARRIDX_MAX); /* cannot have >4G captures */ - duk_get_prop_index(thr, 4, (duk_uarridx_t) i); - duk_put_prop_index(thr, 3, arr_idx); - arr_idx++; - if (arr_idx >= limit) { - goto hit_limit; - } - } - - duk_pop(thr); - /* lastIndex already set up for next match */ - } else { -#else /* DUK_USE_REGEXP_SUPPORT */ - { - /* unconditionally */ -#endif /* DUK_USE_REGEXP_SUPPORT */ - /* no action */ - } - - prev_match_end_boff = match_end_boff; - prev_match_end_coff = match_end_coff; - continue; - } /* for */ - - /* Combined step 11 (empty string special case) and 14-15. */ - - DUK_DDD(DUK_DDDPRINT("split trailer; prev_end b=%ld,c=%ld", (long) prev_match_end_boff, (long) prev_match_end_coff)); - - if (DUK_HSTRING_GET_BYTELEN(h_input) > 0 || !matched) { - /* Add trailer if: - * a) non-empty input - * b) empty input and no (zero size) match found (step 11) - */ - - duk_push_lstring(thr, - (const char *) DUK_HSTRING_GET_DATA(h_input) + prev_match_end_boff, - (duk_size_t) (DUK_HSTRING_GET_BYTELEN(h_input) - prev_match_end_boff)); - duk_put_prop_index(thr, 3, arr_idx); - /* No arr_idx update or limit check */ - } - - return 1; - -hit_limit: -#if defined(DUK_USE_REGEXP_SUPPORT) - if (is_regexp) { - duk_pop(thr); - } -#endif - - return 1; -} - -/* - * Various - */ - -#if defined(DUK_USE_REGEXP_SUPPORT) -DUK_LOCAL void duk__to_regexp_helper(duk_hthread *thr, duk_idx_t idx, duk_bool_t force_new) { - duk_hobject *h; - - /* Shared helper for match() steps 3-4, search() steps 3-4. */ - - DUK_ASSERT(idx >= 0); - - if (force_new) { - goto do_new; - } - - h = duk_get_hobject_with_class(thr, idx, DUK_HOBJECT_CLASS_REGEXP); - if (!h) { - goto do_new; - } - return; - -do_new: - duk_push_hobject_bidx(thr, DUK_BIDX_REGEXP_CONSTRUCTOR); - duk_dup(thr, idx); - duk_new(thr, 1); /* [ ... RegExp val ] -> [ ... res ] */ - duk_replace(thr, idx); -} -#endif /* DUK_USE_REGEXP_SUPPORT */ - -#if defined(DUK_USE_REGEXP_SUPPORT) -DUK_INTERNAL duk_ret_t duk_bi_string_prototype_search(duk_hthread *thr) { - /* Easiest way to implement the search required by the specification - * is to do a RegExp test() with lastIndex forced to zero. To avoid - * side effects on the argument, "clone" the RegExp if a RegExp was - * given as input. - * - * The global flag of the RegExp should be ignored; setting lastIndex - * to zero (which happens when "cloning" the RegExp) should have an - * equivalent effect. - */ - - DUK_ASSERT_TOP(thr, 1); - (void) duk_push_this_coercible_to_string(thr); /* at index 1 */ - duk__to_regexp_helper(thr, 0 /*index*/, 1 /*force_new*/); - - /* stack[0] = regexp - * stack[1] = string - */ - - /* Avoid using RegExp.prototype methods, as they're writable and - * configurable and may have been changed. - */ - - duk_dup_0(thr); - duk_dup_1(thr); /* [ ... re_obj input ] */ - duk_regexp_match(thr); /* -> [ ... res_obj ] */ - - if (!duk_is_object(thr, -1)) { - duk_push_int(thr, -1); - return 1; - } - - duk_get_prop_stridx_short(thr, -1, DUK_STRIDX_INDEX); - DUK_ASSERT(duk_is_number(thr, -1)); - return 1; -} -#endif /* DUK_USE_REGEXP_SUPPORT */ - -#if defined(DUK_USE_REGEXP_SUPPORT) -DUK_INTERNAL duk_ret_t duk_bi_string_prototype_match(duk_hthread *thr) { - duk_bool_t global; - duk_int_t prev_last_index; - duk_int_t this_index; - duk_int_t arr_idx; - - DUK_ASSERT_TOP(thr, 1); - (void) duk_push_this_coercible_to_string(thr); - duk__to_regexp_helper(thr, 0 /*index*/, 0 /*force_new*/); - global = duk_get_prop_stridx_boolean(thr, 0, DUK_STRIDX_GLOBAL, NULL); - DUK_ASSERT_TOP(thr, 2); - - /* stack[0] = regexp - * stack[1] = string - */ - - if (!global) { - duk_regexp_match(thr); /* -> [ res_obj ] */ - return 1; /* return 'res_obj' */ - } - - /* Global case is more complex. */ - - /* [ regexp string ] */ - - duk_push_int(thr, 0); - duk_put_prop_stridx_short(thr, 0, DUK_STRIDX_LAST_INDEX); - duk_push_array(thr); - - /* [ regexp string res_arr ] */ - - prev_last_index = 0; - arr_idx = 0; - - for (;;) { - DUK_ASSERT_TOP(thr, 3); - - duk_dup_0(thr); - duk_dup_1(thr); - duk_regexp_match(thr); /* -> [ ... regexp string ] -> [ ... res_obj ] */ - - if (!duk_is_object(thr, -1)) { - duk_pop(thr); - break; - } - - duk_get_prop_stridx_short(thr, 0, DUK_STRIDX_LAST_INDEX); - DUK_ASSERT(duk_is_number(thr, -1)); - this_index = duk_get_int(thr, -1); - duk_pop(thr); - - if (this_index == prev_last_index) { - this_index++; - duk_push_int(thr, this_index); - duk_put_prop_stridx_short(thr, 0, DUK_STRIDX_LAST_INDEX); - } - prev_last_index = this_index; - - duk_get_prop_index(thr, -1, 0); /* match string */ - duk_put_prop_index(thr, 2, (duk_uarridx_t) arr_idx); - arr_idx++; - duk_pop(thr); /* res_obj */ - } - - if (arr_idx == 0) { - duk_push_null(thr); - } - - return 1; /* return 'res_arr' or 'null' */ -} -#endif /* DUK_USE_REGEXP_SUPPORT */ - -DUK_INTERNAL duk_ret_t duk_bi_string_prototype_concat(duk_hthread *thr) { - /* duk_concat() coerces arguments with ToString() in correct order */ - (void) duk_push_this_coercible_to_string(thr); - duk_insert(thr, 0); /* this is relatively expensive */ - duk_concat(thr, duk_get_top(thr)); - return 1; -} - -DUK_INTERNAL duk_ret_t duk_bi_string_prototype_trim(duk_hthread *thr) { - DUK_ASSERT_TOP(thr, 0); - (void) duk_push_this_coercible_to_string(thr); - duk_trim(thr, 0); - DUK_ASSERT_TOP(thr, 1); - return 1; -} - -#if defined(DUK_USE_ES6) -DUK_INTERNAL duk_ret_t duk_bi_string_prototype_repeat(duk_hthread *thr) { - duk_hstring *h_input; - duk_size_t input_blen; - duk_size_t result_len; - duk_int_t count_signed; - duk_uint_t count; - const duk_uint8_t *src; - duk_uint8_t *buf; - duk_uint8_t *p; - duk_double_t d; -#if !defined(DUK_USE_PREFER_SIZE) - duk_size_t copy_size; - duk_uint8_t *p_end; -#endif - - DUK_ASSERT_TOP(thr, 1); - h_input = duk_push_this_coercible_to_string(thr); - DUK_ASSERT(h_input != NULL); - input_blen = DUK_HSTRING_GET_BYTELEN(h_input); - - /* Count is ToNumber() coerced; +Infinity must be always rejected - * (even if input string is zero length), as well as negative values - * and -Infinity. -Infinity doesn't require an explicit check - * because duk_get_int() clamps it to DUK_INT_MIN which gets rejected - * as a negative value (regardless of input string length). - */ - d = duk_to_number(thr, 0); - if (duk_double_is_posinf(d)) { - goto fail_range; - } - count_signed = duk_get_int(thr, 0); - if (count_signed < 0) { - goto fail_range; - } - count = (duk_uint_t) count_signed; - - /* Overflow check for result length. */ - result_len = count * input_blen; - if (count != 0 && result_len / count != input_blen) { - goto fail_range; - } - - /* Temporary fixed buffer, later converted to string. */ - buf = (duk_uint8_t *) duk_push_fixed_buffer_nozero(thr, result_len); - DUK_ASSERT(buf != NULL); - src = (const duk_uint8_t *) DUK_HSTRING_GET_DATA(h_input); - DUK_ASSERT(src != NULL); - -#if defined(DUK_USE_PREFER_SIZE) - p = buf; - while (count-- > 0) { - duk_memcpy((void *) p, (const void *) src, input_blen); /* copy size may be zero, but pointers are valid */ - p += input_blen; - } -#else /* DUK_USE_PREFER_SIZE */ - /* Take advantage of already copied pieces to speed up the process - * especially for small repeated strings. - */ - p = buf; - p_end = p + result_len; - copy_size = input_blen; - for (;;) { - duk_size_t remain = (duk_size_t) (p_end - p); - DUK_DDD(DUK_DDDPRINT("remain=%ld, copy_size=%ld, input_blen=%ld, result_len=%ld", - (long) remain, - (long) copy_size, - (long) input_blen, - (long) result_len)); - if (remain <= copy_size) { - /* If result_len is zero, this case is taken and does - * a zero size copy (with valid pointers). - */ - duk_memcpy((void *) p, (const void *) src, remain); - break; - } else { - duk_memcpy((void *) p, (const void *) src, copy_size); - p += copy_size; - } - - src = (const duk_uint8_t *) buf; /* Use buf as source for larger copies. */ - copy_size = (duk_size_t) (p - buf); - } -#endif /* DUK_USE_PREFER_SIZE */ - - /* XXX: It would be useful to be able to create a duk_hstring with - * a certain byte size whose data area wasn't initialized and which - * wasn't in the string table yet. This would allow a string to be - * constructed directly without a buffer temporary and when it was - * finished, it could be injected into the string table. Currently - * this isn't possible because duk_hstrings are only tracked by the - * intern table (they are not in heap_allocated). - */ - - duk_buffer_to_string(thr, -1); /* Safe if input is safe. */ - return 1; - -fail_range: - DUK_DCERROR_RANGE_INVALID_ARGS(thr); -} -#endif /* DUK_USE_ES6 */ - -DUK_INTERNAL duk_ret_t duk_bi_string_prototype_locale_compare(duk_hthread *thr) { - duk_hstring *h1; - duk_hstring *h2; - duk_size_t h1_len, h2_len, prefix_len; - duk_small_int_t ret = 0; - duk_small_int_t rc; - - /* The current implementation of localeCompare() is simply a codepoint - * by codepoint comparison, implemented with a simple string compare - * because UTF-8 should preserve codepoint ordering (assuming valid - * shortest UTF-8 encoding). - * - * The specification requires that the return value must be related - * to the sort order: e.g. negative means that 'this' comes before - * 'that' in sort order. We assume an ascending sort order. - */ - - /* XXX: could share code with duk_js_ops.c, duk_js_compare_helper */ - - h1 = duk_push_this_coercible_to_string(thr); - DUK_ASSERT(h1 != NULL); - - h2 = duk_to_hstring(thr, 0); - DUK_ASSERT(h2 != NULL); - - h1_len = (duk_size_t) DUK_HSTRING_GET_BYTELEN(h1); - h2_len = (duk_size_t) DUK_HSTRING_GET_BYTELEN(h2); - prefix_len = (h1_len <= h2_len ? h1_len : h2_len); - - rc = (duk_small_int_t) duk_memcmp((const void *) DUK_HSTRING_GET_DATA(h1), - (const void *) DUK_HSTRING_GET_DATA(h2), - (size_t) prefix_len); - - if (rc < 0) { - ret = -1; - goto done; - } else if (rc > 0) { - ret = 1; - goto done; - } - - /* prefix matches, lengths matter now */ - if (h1_len > h2_len) { - ret = 1; - goto done; - } else if (h1_len == h2_len) { - DUK_ASSERT(ret == 0); - goto done; - } - ret = -1; - goto done; - -done: - duk_push_int(thr, (duk_int_t) ret); - return 1; -} - -#if defined(DUK_USE_ES6) -DUK_INTERNAL duk_ret_t duk_bi_string_prototype_startswith_endswith(duk_hthread *thr) { - duk_int_t magic; - duk_hstring *h_target; - duk_size_t blen_target; - duk_hstring *h_search; - duk_size_t blen_search; - duk_int_t off; - duk_bool_t result = 0; - duk_size_t blen_left; - - /* Because string byte lengths are in [0,DUK_INT_MAX] it's safe to - * subtract two string lengths without overflow. - */ - DUK_ASSERT(DUK_HSTRING_MAX_BYTELEN <= DUK_INT_MAX); - - h_target = duk_push_this_coercible_to_string(thr); - DUK_ASSERT(h_target != NULL); - - h_search = duk__str_tostring_notregexp(thr, 0); - DUK_ASSERT(h_search != NULL); - - magic = duk_get_current_magic(thr); - - /* Careful to avoid pointer overflows in the matching logic. */ - - blen_target = DUK_HSTRING_GET_BYTELEN(h_target); - blen_search = DUK_HSTRING_GET_BYTELEN(h_search); - -#if 0 - /* If search string is longer than the target string, we can - * never match. Could check explicitly, but should be handled - * correctly below. - */ - if (blen_search > blen_target) { - goto finish; - } -#endif - - off = 0; - if (duk_is_undefined(thr, 1)) { - if (magic) { - off = (duk_int_t) blen_target - (duk_int_t) blen_search; - } else { - DUK_ASSERT(off == 0); - } - } else { - duk_int_t len; - duk_int_t pos; - - DUK_ASSERT(DUK_HSTRING_MAX_BYTELEN <= DUK_INT_MAX); - len = (duk_int_t) DUK_HSTRING_GET_CHARLEN(h_target); - pos = duk_to_int_clamped(thr, 1, 0, len); - DUK_ASSERT(pos >= 0 && pos <= len); - - off = (duk_int_t) duk_heap_strcache_offset_char2byte(thr, h_target, (duk_uint_fast32_t) pos); - if (magic) { - off -= (duk_int_t) blen_search; - } - } - if (off < 0 || off > (duk_int_t) blen_target) { - goto finish; - } - - /* The main comparison can be done using a memcmp() rather than - * doing codepoint comparisons: for CESU-8 strings there is a - * canonical representation for every codepoint. But we do need - * to deal with the char/byte offset translation to find the - * comparison range. - */ - - DUK_ASSERT(off >= 0); - DUK_ASSERT((duk_size_t) off <= blen_target); - blen_left = blen_target - (duk_size_t) off; - if (blen_left >= blen_search) { - const duk_uint8_t *p_cmp_start = (const duk_uint8_t *) DUK_HSTRING_GET_DATA(h_target) + off; - const duk_uint8_t *p_search = (const duk_uint8_t *) DUK_HSTRING_GET_DATA(h_search); - if (duk_memcmp_unsafe((const void *) p_cmp_start, (const void *) p_search, (size_t) blen_search) == 0) { - result = 1; - } - } - -finish: - duk_push_boolean(thr, result); - return 1; -} -#endif /* DUK_USE_ES6 */ - -#if defined(DUK_USE_ES6) -DUK_INTERNAL duk_ret_t duk_bi_string_prototype_includes(duk_hthread *thr) { - duk_hstring *h; - duk_hstring *h_search; - duk_int_t len; - duk_int_t pos; - - h = duk_push_this_coercible_to_string(thr); - DUK_ASSERT(h != NULL); - - h_search = duk__str_tostring_notregexp(thr, 0); - DUK_ASSERT(h_search != NULL); - - len = (duk_int_t) DUK_HSTRING_GET_CHARLEN(h); - pos = duk_to_int_clamped(thr, 1, 0, len); - DUK_ASSERT(pos >= 0 && pos <= len); - - pos = duk__str_search_shared(thr, h, h_search, pos, 0 /*backwards*/); - duk_push_boolean(thr, pos >= 0); - return 1; -} -#endif /* DUK_USE_ES6 */ -#endif /* DUK_USE_STRING_BUILTIN */ -#line 1 "duk_bi_symbol.c" -/* - * Symbol built-in - */ - -/* #include duk_internal.h -> already included */ - -#if defined(DUK_USE_SYMBOL_BUILTIN) - -/* - * Constructor - */ - -DUK_INTERNAL duk_ret_t duk_bi_symbol_constructor_shared(duk_hthread *thr) { - const duk_uint8_t *desc; - duk_size_t len; - duk_uint8_t *buf; - duk_uint8_t *p; - duk_int_t magic; - - magic = duk_get_current_magic(thr); - if (duk_is_undefined(thr, 0) && (magic == 0)) { - /* Symbol() accepts undefined and empty string, but they are - * treated differently. - */ - desc = NULL; - len = 0; - } else { - /* Symbol.for() coerces undefined to 'undefined' */ - desc = (const duk_uint8_t *) duk_to_lstring(thr, 0, &len); - } - - /* Maximum symbol data length: - * +1 initial byte (0x80 or 0x81) - * +len description - * +1 0xff after description, before unique suffix - * +17 autogenerated unique suffix: 'ffffffff-ffffffff' is longest - * +1 0xff after unique suffix for symbols with undefined description - */ - buf = (duk_uint8_t *) duk_push_fixed_buffer(thr, 1 + len + 1 + 17 + 1); - DUK_ASSERT(buf != NULL); - p = buf + 1; - DUK_ASSERT(desc != NULL || len == 0); /* may be NULL if len is 0 */ - duk_memcpy_unsafe((void *) p, (const void *) desc, len); - p += len; - if (magic == 0) { - /* Symbol(): create unique symbol. Use two 32-bit values - * to avoid dependency on 64-bit types and 64-bit integer - * formatting (at least for now). - */ - if (++thr->heap->sym_counter[0] == 0) { - thr->heap->sym_counter[1]++; - } - p += DUK_SPRINTF((char *) p, - "\xFF" - "%lx-%lx", - (unsigned long) thr->heap->sym_counter[1], - (unsigned long) thr->heap->sym_counter[0]); - if (desc == NULL) { - /* Special case for 'undefined' description, trailing - * 0xff distinguishes from empty string description, - * but needs minimal special case handling elsewhere. - */ - *p++ = 0xff; - } - buf[0] = 0x81; - } else { - /* Symbol.for(): create a global symbol */ - buf[0] = 0x80; - } - - duk_push_lstring(thr, (const char *) buf, (duk_size_t) (p - buf)); - DUK_DDD(DUK_DDDPRINT("created symbol: %!T", duk_get_tval(thr, -1))); - return 1; -} - -DUK_LOCAL duk_hstring *duk__auto_unbox_symbol(duk_hthread *thr, duk_tval *tv_arg) { - duk_tval *tv; - duk_hobject *h_obj; - duk_hstring *h_str; - - DUK_ASSERT(tv_arg != NULL); - - /* XXX: add internal helper: duk_auto_unbox_tval(thr, tv, mask); */ - /* XXX: add internal helper: duk_auto_unbox(thr, tv, idx); */ - - tv = tv_arg; - if (DUK_TVAL_IS_OBJECT(tv)) { - h_obj = DUK_TVAL_GET_OBJECT(tv); - DUK_ASSERT(h_obj != NULL); - if (DUK_HOBJECT_GET_CLASS_NUMBER(h_obj) == DUK_HOBJECT_CLASS_SYMBOL) { - tv = duk_hobject_get_internal_value_tval_ptr(thr->heap, h_obj); - if (tv == NULL) { - return NULL; - } - } else { - return NULL; - } - } - - if (!DUK_TVAL_IS_STRING(tv)) { - return NULL; - } - h_str = DUK_TVAL_GET_STRING(tv); - DUK_ASSERT(h_str != NULL); - - /* Here symbol is more expected than not. */ - if (DUK_UNLIKELY(!DUK_HSTRING_HAS_SYMBOL(h_str))) { - return NULL; - } - - return h_str; -} - -DUK_INTERNAL duk_ret_t duk_bi_symbol_tostring_shared(duk_hthread *thr) { - duk_hstring *h_str; - - h_str = duk__auto_unbox_symbol(thr, DUK_HTHREAD_THIS_PTR(thr)); - if (h_str == NULL) { - return DUK_RET_TYPE_ERROR; - } - - if (duk_get_current_magic(thr) == 0) { - /* .toString() */ - duk_push_symbol_descriptive_string(thr, h_str); - } else { - /* .valueOf() */ - duk_push_hstring(thr, h_str); - } - return 1; -} - -DUK_INTERNAL duk_ret_t duk_bi_symbol_key_for(duk_hthread *thr) { - duk_hstring *h; - const duk_uint8_t *p; - - /* Argument must be a symbol but not checked here. The initial byte - * check will catch non-symbol strings. - */ - h = duk_require_hstring(thr, 0); - DUK_ASSERT(h != NULL); - - p = (const duk_uint8_t *) DUK_HSTRING_GET_DATA(h); - DUK_ASSERT(p != NULL); - - /* Even for zero length strings there's at least one NUL byte so - * we can safely check the initial byte. - */ - if (p[0] == 0x80) { - /* Global symbol, return its key (bytes just after the initial byte). */ - duk_push_lstring(thr, (const char *) (p + 1), (duk_size_t) (DUK_HSTRING_GET_BYTELEN(h) - 1)); - return 1; - } else if (p[0] == 0x81 || p[0] == 0x82 || p[0] == 0xff) { - /* Local symbol or hidden symbol, return undefined. */ - return 0; - } - - /* Covers normal strings and unknown initial bytes. */ - return DUK_RET_TYPE_ERROR; -} - -DUK_INTERNAL duk_ret_t duk_bi_symbol_toprimitive(duk_hthread *thr) { - duk_hstring *h_str; - - h_str = duk__auto_unbox_symbol(thr, DUK_HTHREAD_THIS_PTR(thr)); - if (h_str == NULL) { - return DUK_RET_TYPE_ERROR; - } - duk_push_hstring(thr, h_str); - return 1; -} - -#endif /* DUK_USE_SYMBOL_BUILTIN */ -#line 1 "duk_bi_thread.c" -/* - * Thread builtins - */ - -/* #include duk_internal.h -> already included */ - -/* - * Constructor - */ - -#if defined(DUK_USE_COROUTINE_SUPPORT) -DUK_INTERNAL duk_ret_t duk_bi_thread_constructor(duk_hthread *thr) { - duk_hthread *new_thr; - duk_hobject *func; - - /* Check that the argument is callable; this is not 100% because we - * don't allow native functions to be a thread's initial function. - * Resume will reject such functions in any case. - */ - /* XXX: need a duk_require_func_promote_lfunc() */ - func = duk_require_hobject_promote_lfunc(thr, 0); - DUK_ASSERT(func != NULL); - duk_require_callable(thr, 0); - - duk_push_thread(thr); - new_thr = (duk_hthread *) duk_known_hobject(thr, -1); - new_thr->state = DUK_HTHREAD_STATE_INACTIVE; - - /* push initial function call to new thread stack; this is - * picked up by resume(). - */ - duk_push_hobject(new_thr, func); - - return 1; /* return thread */ -} -#endif - -/* - * Resume a thread. - * - * The thread must be in resumable state, either (a) new thread which hasn't - * yet started, or (b) a thread which has previously yielded. This method - * must be called from an ECMAScript function. - * - * Args: - * - thread - * - value - * - isError (defaults to false) - * - * Note: yield and resume handling is currently asymmetric. - */ - -#if defined(DUK_USE_COROUTINE_SUPPORT) -DUK_INTERNAL duk_ret_t duk_bi_thread_resume(duk_hthread *ctx) { - duk_hthread *thr = (duk_hthread *) ctx; - duk_hthread *thr_resume; - duk_hobject *caller_func; - duk_small_uint_t is_error; - - DUK_DDD(DUK_DDDPRINT("Duktape.Thread.resume(): thread=%!T, value=%!T, is_error=%!T", - (duk_tval *) duk_get_tval(thr, 0), - (duk_tval *) duk_get_tval(thr, 1), - (duk_tval *) duk_get_tval(thr, 2))); - - DUK_ASSERT(thr->state == DUK_HTHREAD_STATE_RUNNING); - DUK_ASSERT(thr->heap->curr_thread == thr); - - thr_resume = duk_require_hthread(thr, 0); - DUK_ASSERT(duk_get_top(thr) == 3); - is_error = (duk_small_uint_t) duk_to_boolean_top_pop(thr); - DUK_ASSERT(duk_get_top(thr) == 2); - - /* [ thread value ] */ - - /* - * Thread state and calling context checks - */ - - if (thr->callstack_top < 2) { - DUK_DD(DUK_DDPRINT( - "resume state invalid: callstack should contain at least 2 entries (caller and Duktape.Thread.resume)")); - goto state_error; - } - DUK_ASSERT(thr->callstack_curr != NULL); - DUK_ASSERT(thr->callstack_curr->parent != NULL); - DUK_ASSERT(DUK_ACT_GET_FUNC(thr->callstack_curr) != NULL); /* us */ - DUK_ASSERT(DUK_HOBJECT_IS_NATFUNC(DUK_ACT_GET_FUNC(thr->callstack_curr))); - DUK_ASSERT(DUK_ACT_GET_FUNC(thr->callstack_curr->parent) != NULL); /* caller */ - - caller_func = DUK_ACT_GET_FUNC(thr->callstack_curr->parent); - if (!DUK_HOBJECT_IS_COMPFUNC(caller_func)) { - DUK_DD(DUK_DDPRINT("resume state invalid: caller must be ECMAScript code")); - goto state_error; - } - - /* Note: there is no requirement that: 'thr->callstack_preventcount == 1' - * like for yield. - */ - - if (thr_resume->state != DUK_HTHREAD_STATE_INACTIVE && thr_resume->state != DUK_HTHREAD_STATE_YIELDED) { - DUK_DD(DUK_DDPRINT("resume state invalid: target thread must be INACTIVE or YIELDED")); - goto state_error; - } - - DUK_ASSERT(thr_resume->state == DUK_HTHREAD_STATE_INACTIVE || thr_resume->state == DUK_HTHREAD_STATE_YIELDED); - - /* Further state-dependent pre-checks */ - - if (thr_resume->state == DUK_HTHREAD_STATE_YIELDED) { - /* no pre-checks now, assume a previous yield() has left things in - * tip-top shape (longjmp handler will assert for these). - */ - } else { - duk_hobject *h_fun; - - DUK_ASSERT(thr_resume->state == DUK_HTHREAD_STATE_INACTIVE); - - /* The initial function must be an ECMAScript function (but - * can be bound). We must make sure of that before we longjmp - * because an error in the RESUME handler call processing will - * not be handled very cleanly. - */ - if ((thr_resume->callstack_top != 0) || (thr_resume->valstack_top - thr_resume->valstack != 1)) { - goto state_error; - } - - duk_push_tval(thr, DUK_GET_TVAL_NEGIDX(thr_resume, -1)); - duk_resolve_nonbound_function(thr); - h_fun = duk_require_hobject(thr, -1); /* reject lightfuncs on purpose */ - if (!DUK_HOBJECT_IS_CALLABLE(h_fun) || !DUK_HOBJECT_IS_COMPFUNC(h_fun)) { - goto state_error; - } - duk_pop(thr); - } - -#if 0 - /* This check would prevent a heap destruction time finalizer from - * launching a coroutine, which would ensure that during finalization - * 'thr' would always equal heap_thread. Normal runtime finalizers - * run with ms_running == 0, i.e. outside mark-and-sweep. See GH-2030. - */ - if (thr->heap->ms_running) { - DUK_D(DUK_DPRINT("refuse Duktape.Thread.resume() when ms_running != 0")); - goto state_error; - } -#endif - - /* - * The error object has been augmented with a traceback and other - * info from its creation point -- usually another thread. The - * error handler is called here right before throwing, but it also - * runs in the resumer's thread. It might be nice to get a traceback - * from the resumee but this is not the case now. - */ - -#if defined(DUK_USE_AUGMENT_ERROR_THROW) - if (is_error) { - DUK_ASSERT_TOP(thr, 2); /* value (error) is at stack top */ - duk_err_augment_error_throw(thr); /* in resumer's context */ - } -#endif - -#if defined(DUK_USE_DEBUG) - if (is_error) { - DUK_DDD(DUK_DDDPRINT("RESUME ERROR: thread=%!T, value=%!T", - (duk_tval *) duk_get_tval(thr, 0), - (duk_tval *) duk_get_tval(thr, 1))); - } else if (thr_resume->state == DUK_HTHREAD_STATE_YIELDED) { - DUK_DDD(DUK_DDDPRINT("RESUME NORMAL: thread=%!T, value=%!T", - (duk_tval *) duk_get_tval(thr, 0), - (duk_tval *) duk_get_tval(thr, 1))); - } else { - DUK_DDD(DUK_DDDPRINT("RESUME INITIAL: thread=%!T, value=%!T", - (duk_tval *) duk_get_tval(thr, 0), - (duk_tval *) duk_get_tval(thr, 1))); - } -#endif - - thr->heap->lj.type = DUK_LJ_TYPE_RESUME; - - /* lj value2: thread */ - DUK_ASSERT(thr->valstack_bottom < thr->valstack_top); - DUK_TVAL_SET_TVAL_UPDREF(thr, &thr->heap->lj.value2, &thr->valstack_bottom[0]); /* side effects */ - - /* lj value1: value */ - DUK_ASSERT(thr->valstack_bottom + 1 < thr->valstack_top); - DUK_TVAL_SET_TVAL_UPDREF(thr, &thr->heap->lj.value1, &thr->valstack_bottom[1]); /* side effects */ - DUK_TVAL_CHKFAST_INPLACE_SLOW(&thr->heap->lj.value1); - - thr->heap->lj.iserror = is_error; - - DUK_ASSERT(thr->heap->lj.jmpbuf_ptr != NULL); /* call is from executor, so we know we have a jmpbuf */ - duk_err_longjmp(thr); /* execution resumes in bytecode executor */ - DUK_UNREACHABLE(); - /* Never here, fall through to error (from compiler point of view). */ - -state_error: - DUK_DCERROR_TYPE_INVALID_STATE(thr); -} -#endif - -/* - * Yield the current thread. - * - * The thread must be in yieldable state: it must have a resumer, and there - * must not be any yield-preventing calls (native calls and constructor calls, - * currently) in the thread's call stack (otherwise a resume would not be - * possible later). This method must be called from an ECMAScript function. - * - * Args: - * - value - * - isError (defaults to false) - * - * Note: yield and resume handling is currently asymmetric. - */ - -#if defined(DUK_USE_COROUTINE_SUPPORT) -DUK_INTERNAL duk_ret_t duk_bi_thread_yield(duk_hthread *thr) { - duk_hobject *caller_func; - duk_small_uint_t is_error; - - DUK_DDD(DUK_DDDPRINT("Duktape.Thread.yield(): value=%!T, is_error=%!T", - (duk_tval *) duk_get_tval(thr, 0), - (duk_tval *) duk_get_tval(thr, 1))); - - DUK_ASSERT(thr->state == DUK_HTHREAD_STATE_RUNNING); - DUK_ASSERT(thr->heap->curr_thread == thr); - - DUK_ASSERT(duk_get_top(thr) == 2); - is_error = (duk_small_uint_t) duk_to_boolean_top_pop(thr); - DUK_ASSERT(duk_get_top(thr) == 1); - - /* [ value ] */ - - /* - * Thread state and calling context checks - */ - - if (!thr->resumer) { - DUK_DD(DUK_DDPRINT("yield state invalid: current thread must have a resumer")); - goto state_error; - } - DUK_ASSERT(thr->resumer->state == DUK_HTHREAD_STATE_RESUMED); - - if (thr->callstack_top < 2) { - DUK_DD(DUK_DDPRINT( - "yield state invalid: callstack should contain at least 2 entries (caller and Duktape.Thread.yield)")); - goto state_error; - } - DUK_ASSERT(thr->callstack_curr != NULL); - DUK_ASSERT(thr->callstack_curr->parent != NULL); - DUK_ASSERT(DUK_ACT_GET_FUNC(thr->callstack_curr) != NULL); /* us */ - DUK_ASSERT(DUK_HOBJECT_IS_NATFUNC(DUK_ACT_GET_FUNC(thr->callstack_curr))); - DUK_ASSERT(DUK_ACT_GET_FUNC(thr->callstack_curr->parent) != NULL); /* caller */ - - caller_func = DUK_ACT_GET_FUNC(thr->callstack_curr->parent); - if (!DUK_HOBJECT_IS_COMPFUNC(caller_func)) { - DUK_DD(DUK_DDPRINT("yield state invalid: caller must be ECMAScript code")); - goto state_error; - } - - DUK_ASSERT(thr->callstack_preventcount >= 1); /* should never be zero, because we (Duktape.Thread.yield) are on the stack */ - if (thr->callstack_preventcount != 1) { - /* Note: the only yield-preventing call is Duktape.Thread.yield(), hence check for 1, not 0 */ - DUK_DD(DUK_DDPRINT("yield state invalid: there must be no yield-preventing calls in current thread callstack " - "(preventcount is %ld)", - (long) thr->callstack_preventcount)); - goto state_error; - } - - /* - * The error object has been augmented with a traceback and other - * info from its creation point -- usually the current thread. - * The error handler, however, is called right before throwing - * and runs in the yielder's thread. - */ - -#if defined(DUK_USE_AUGMENT_ERROR_THROW) - if (is_error) { - DUK_ASSERT_TOP(thr, 1); /* value (error) is at stack top */ - duk_err_augment_error_throw(thr); /* in yielder's context */ - } -#endif - -#if defined(DUK_USE_DEBUG) - if (is_error) { - DUK_DDD(DUK_DDDPRINT("YIELD ERROR: value=%!T", (duk_tval *) duk_get_tval(thr, 0))); - } else { - DUK_DDD(DUK_DDDPRINT("YIELD NORMAL: value=%!T", (duk_tval *) duk_get_tval(thr, 0))); - } -#endif - - /* - * Process yield - * - * After longjmp(), processing continues in bytecode executor longjmp - * handler, which will e.g. update thr->resumer to NULL. - */ - - thr->heap->lj.type = DUK_LJ_TYPE_YIELD; - - /* lj value1: value */ - DUK_ASSERT(thr->valstack_bottom < thr->valstack_top); - DUK_TVAL_SET_TVAL_UPDREF(thr, &thr->heap->lj.value1, &thr->valstack_bottom[0]); /* side effects */ - DUK_TVAL_CHKFAST_INPLACE_SLOW(&thr->heap->lj.value1); - - thr->heap->lj.iserror = is_error; - - DUK_ASSERT(thr->heap->lj.jmpbuf_ptr != NULL); /* call is from executor, so we know we have a jmpbuf */ - duk_err_longjmp(thr); /* execution resumes in bytecode executor */ - DUK_UNREACHABLE(); - /* Never here, fall through to error (from compiler point of view). */ - -state_error: - DUK_DCERROR_TYPE_INVALID_STATE(thr); -} -#endif - -#if defined(DUK_USE_COROUTINE_SUPPORT) -DUK_INTERNAL duk_ret_t duk_bi_thread_current(duk_hthread *thr) { - duk_push_current_thread(thr); - return 1; -} -#endif -#line 1 "duk_bi_thrower.c" -/* - * Type error thrower, E5 Section 13.2.3. - */ - -/* #include duk_internal.h -> already included */ - -DUK_INTERNAL duk_ret_t duk_bi_type_error_thrower(duk_hthread *thr) { - DUK_DCERROR_TYPE_INVALID_ARGS(thr); -} -#line 1 "duk_debug_fixedbuffer.c" -/* - * Fixed buffer helper useful for debugging, requires no allocation - * which is critical for debugging. - */ - -/* #include duk_internal.h -> already included */ - -#if defined(DUK_USE_DEBUG) - -DUK_INTERNAL void duk_fb_put_bytes(duk_fixedbuffer *fb, const duk_uint8_t *buffer, duk_size_t length) { - duk_size_t avail; - duk_size_t copylen; - - avail = (fb->offset >= fb->length ? (duk_size_t) 0 : (duk_size_t) (fb->length - fb->offset)); - if (length > avail) { - copylen = avail; - fb->truncated = 1; - } else { - copylen = length; - } - duk_memcpy_unsafe(fb->buffer + fb->offset, buffer, copylen); - fb->offset += copylen; -} - -DUK_INTERNAL void duk_fb_put_byte(duk_fixedbuffer *fb, duk_uint8_t x) { - duk_fb_put_bytes(fb, (const duk_uint8_t *) &x, 1); -} - -DUK_INTERNAL void duk_fb_put_cstring(duk_fixedbuffer *fb, const char *x) { - duk_fb_put_bytes(fb, (const duk_uint8_t *) x, (duk_size_t) DUK_STRLEN(x)); -} - -DUK_INTERNAL void duk_fb_sprintf(duk_fixedbuffer *fb, const char *fmt, ...) { - duk_size_t avail; - va_list ap; - - va_start(ap, fmt); - avail = (fb->offset >= fb->length ? (duk_size_t) 0 : (duk_size_t) (fb->length - fb->offset)); - if (avail > 0) { - duk_int_t res = (duk_int_t) DUK_VSNPRINTF((char *) (fb->buffer + fb->offset), avail, fmt, ap); - if (res < 0) { - /* error */ - } else if ((duk_size_t) res >= avail) { - /* (maybe) truncated */ - fb->offset += avail; - if ((duk_size_t) res > avail) { - /* actual chars dropped (not just NUL term) */ - fb->truncated = 1; - } - } else { - /* normal */ - fb->offset += (duk_size_t) res; - } - } - va_end(ap); -} - -DUK_INTERNAL void duk_fb_put_funcptr(duk_fixedbuffer *fb, duk_uint8_t *fptr, duk_size_t fptr_size) { - char buf[64 + 1]; - duk_debug_format_funcptr(buf, sizeof(buf), fptr, fptr_size); - buf[sizeof(buf) - 1] = (char) 0; - duk_fb_put_cstring(fb, buf); -} - -DUK_INTERNAL duk_bool_t duk_fb_is_full(duk_fixedbuffer *fb) { - return (fb->offset >= fb->length); -} - -#endif /* DUK_USE_DEBUG */ -#line 1 "duk_debug_vsnprintf.c" -/* - * Custom formatter for debug printing, allowing Duktape specific data - * structures (such as tagged values and heap objects) to be printed with - * a nice format string. Because debug printing should not affect execution - * state, formatting here must be independent of execution (see implications - * below) and must not allocate memory. - * - * Custom format tags begin with a '%!' to safely distinguish them from - * standard format tags. The following conversions are supported: - * - * %!T tagged value (duk_tval *) - * %!O heap object (duk_heaphdr *) - * %!I decoded bytecode instruction - * %!X bytecode instruction opcode name (arg is long) - * %!C catcher (duk_catcher *) - * %!A activation (duk_activation *) - * - * Everything is serialized in a JSON-like manner. The default depth is one - * level, internal prototype is not followed, and internal properties are not - * serialized. The following modifiers change this behavior: - * - * @ print pointers - * # print binary representations (where applicable) - * d deep traversal of own properties (not prototype) - * p follow prototype chain (useless without 'd') - * i include internal properties (other than prototype) - * x hexdump buffers - * h heavy formatting - * - * For instance, the following serializes objects recursively, but does not - * follow the prototype chain nor print internal properties: "%!dO". - * - * Notes: - * - * * Standard snprintf return value semantics seem to vary. This - * implementation returns the number of bytes it actually wrote - * (excluding the null terminator). If retval == buffer size, - * output was truncated (except for corner cases). - * - * * Output format is intentionally different from ECMAScript - * formatting requirements, as formatting here serves debugging - * of internals. - * - * * Depth checking (and updating) is done in each type printer - * separately, to allow them to call each other freely. - * - * * Some pathological structures might take ages to print (e.g. - * self recursion with 100 properties pointing to the object - * itself). To guard against these, each printer also checks - * whether the output buffer is full; if so, early exit. - * - * * Reference loops are detected using a loop stack. - */ - -/* #include duk_internal.h -> already included */ - -#if defined(DUK_USE_DEBUG) - -/* #include stdio.h -> already included */ -/* #include stdarg.h -> already included */ -#include - -/* list of conversion specifiers that terminate a format tag; - * this is unfortunately guesswork. - */ -#define DUK__ALLOWED_STANDARD_SPECIFIERS "diouxXeEfFgGaAcsCSpnm" - -/* maximum length of standard format tag that we support */ -#define DUK__MAX_FORMAT_TAG_LENGTH 32 - -/* heapobj recursion depth when deep printing is selected */ -#define DUK__DEEP_DEPTH_LIMIT 8 - -/* maximum recursion depth for loop detection stacks */ -#define DUK__LOOP_STACK_DEPTH 256 - -/* must match bytecode defines now; build autogenerate? */ -DUK_LOCAL const char * const duk__bc_optab[256] = { - "LDREG", "STREG", "JUMP", "LDCONST", "LDINT", "LDINTX", "LDTHIS", "LDUNDEF", - "LDNULL", "LDTRUE", "LDFALSE", "GETVAR", "BNOT", "LNOT", "UNM", "UNP", - "EQ_RR", "EQ_CR", "EQ_RC", "EQ_CC", "NEQ_RR", "NEQ_CR", "NEQ_RC", "NEQ_CC", - "SEQ_RR", "SEQ_CR", "SEQ_RC", "SEQ_CC", "SNEQ_RR", "SNEQ_CR", "SNEQ_RC", "SNEQ_CC", - - "GT_RR", "GT_CR", "GT_RC", "GT_CC", "GE_RR", "GE_CR", "GE_RC", "GE_CC", - "LT_RR", "LT_CR", "LT_RC", "LT_CC", "LE_RR", "LE_CR", "LE_RC", "LE_CC", - "IFTRUE_R", "IFTRUE_C", "IFFALSE_R", "IFFALSE_C", "ADD_RR", "ADD_CR", "ADD_RC", "ADD_CC", - "SUB_RR", "SUB_CR", "SUB_RC", "SUB_CC", "MUL_RR", "MUL_CR", "MUL_RC", "MUL_CC", - - "DIV_RR", "DIV_CR", "DIV_RC", "DIV_CC", "MOD_RR", "MOD_CR", "MOD_RC", "MOD_CC", - "EXP_RR", "EXP_CR", "EXP_RC", "EXP_CC", "BAND_RR", "BAND_CR", "BAND_RC", "BAND_CC", - "BOR_RR", "BOR_CR", "BOR_RC", "BOR_CC", "BXOR_RR", "BXOR_CR", "BXOR_RC", "BXOR_CC", - "BASL_RR", "BASL_CR", "BASL_RC", "BASL_CC", "BLSR_RR", "BLSR_CR", "BLSR_RC", "BLSR_CC", - - "BASR_RR", "BASR_CR", "BASR_RC", "BASR_CC", "INSTOF_RR", "INSTOF_CR", "INSTOF_RC", "INSTOF_CC", - "IN_RR", "IN_CR", "IN_RC", "IN_CC", "GETPROP_RR", "GETPROP_CR", "GETPROP_RC", "GETPROP_CC", - "PUTPROP_RR", "PUTPROP_CR", "PUTPROP_RC", "PUTPROP_CC", "DELPROP_RR", "DELPROP_CR", "DELPROP_RC", "DELPROP_CC", - "PREINCR", "PREDECR", "POSTINCR", "POSTDECR", "PREINCV", "PREDECV", "POSTINCV", "POSTDECV", - - "PREINCP_RR", "PREINCP_CR", "PREINCP_RC", "PREINCP_CC", "PREDECP_RR", "PREDECP_CR", "PREDECP_RC", "PREDECP_CC", - "POSTINCP_RR", "POSTINCP_CR", "POSTINCP_RC", "POSTINCP_CC", "POSTDECP_RR", "POSTDECP_CR", "POSTDECP_RC", "POSTDECP_CC", - "DECLVAR_RR", "DECLVAR_CR", "DECLVAR_RC", "DECLVAR_CC", "REGEXP_RR", "REGEXP_RC", "REGEXP_CR", "REGEXP_CC", - "CLOSURE", "TYPEOF", "TYPEOFID", "PUTVAR", "DELVAR", "RETREG", "RETUNDEF", "RETCONST", - - "RETCONSTN", "LABEL", "ENDLABEL", "BREAK", "CONTINUE", "TRYCATCH", "ENDTRY", "ENDCATCH", - "ENDFIN", "THROW", "INVLHS", "CSREG", "CSVAR_RR", "CSVAR_CR", "CSVAR_RC", "CSVAR_CC", - "CALL0", "CALL1", "CALL2", "CALL3", "CALL4", "CALL5", "CALL6", "CALL7", - "CALL8", "CALL9", "CALL10", "CALL11", "CALL12", "CALL13", "CALL14", "CALL15", - - "NEWOBJ", "NEWARR", "MPUTOBJ", "MPUTOBJI", "INITSET", "INITGET", "MPUTARR", "MPUTARRI", - "SETALEN", "INITENUM", "NEXTENUM", "NEWTARGET", "DEBUGGER", "NOP", "INVALID", "UNUSED207", - "GETPROPC_RR", "GETPROPC_CR", "GETPROPC_RC", "GETPROPC_CC", "UNUSED212", "UNUSED213", "UNUSED214", "UNUSED215", - "UNUSED216", "UNUSED217", "UNUSED218", "UNUSED219", "UNUSED220", "UNUSED221", "UNUSED222", "UNUSED223", - - "UNUSED224", "UNUSED225", "UNUSED226", "UNUSED227", "UNUSED228", "UNUSED229", "UNUSED230", "UNUSED231", - "UNUSED232", "UNUSED233", "UNUSED234", "UNUSED235", "UNUSED236", "UNUSED237", "UNUSED238", "UNUSED239", - "UNUSED240", "UNUSED241", "UNUSED242", "UNUSED243", "UNUSED244", "UNUSED245", "UNUSED246", "UNUSED247", - "UNUSED248", "UNUSED249", "UNUSED250", "UNUSED251", "UNUSED252", "UNUSED253", "UNUSED254", "UNUSED255" -}; - -typedef struct duk__dprint_state duk__dprint_state; -struct duk__dprint_state { - duk_fixedbuffer *fb; - - /* loop_stack_index could be perhaps be replaced by 'depth', but it's nice - * to not couple these two mechanisms unnecessarily. - */ - duk_hobject *loop_stack[DUK__LOOP_STACK_DEPTH]; - duk_int_t loop_stack_index; - duk_int_t loop_stack_limit; - - duk_int_t depth; - duk_int_t depth_limit; - - duk_bool_t pointer; - duk_bool_t heavy; - duk_bool_t binary; - duk_bool_t follow_proto; - duk_bool_t internal; - duk_bool_t hexdump; -}; - -/* helpers */ -DUK_LOCAL_DECL void duk__print_hstring(duk__dprint_state *st, duk_hstring *k, duk_bool_t quotes); -DUK_LOCAL_DECL void duk__print_hobject(duk__dprint_state *st, duk_hobject *h); -DUK_LOCAL_DECL void duk__print_hbuffer(duk__dprint_state *st, duk_hbuffer *h); -DUK_LOCAL_DECL void duk__print_tval(duk__dprint_state *st, duk_tval *tv); -DUK_LOCAL_DECL void duk__print_instr(duk__dprint_state *st, duk_instr_t ins); -DUK_LOCAL_DECL void duk__print_heaphdr(duk__dprint_state *st, duk_heaphdr *h); -DUK_LOCAL_DECL void duk__print_shared_heaphdr(duk__dprint_state *st, duk_heaphdr *h); -DUK_LOCAL_DECL void duk__print_shared_heaphdr_string(duk__dprint_state *st, duk_heaphdr_string *h); - -DUK_LOCAL void duk__print_shared_heaphdr(duk__dprint_state *st, duk_heaphdr *h) { - duk_fixedbuffer *fb = st->fb; - - if (st->heavy) { - duk_fb_sprintf(fb, "(%p)", (void *) h); - } - - if (!h) { - return; - } - - if (st->binary) { - duk_size_t i; - duk_fb_put_byte(fb, (duk_uint8_t) DUK_ASC_LBRACKET); - for (i = 0; i < (duk_size_t) sizeof(*h); i++) { - duk_fb_sprintf(fb, "%02lx", (unsigned long) ((duk_uint8_t *) h)[i]); - } - duk_fb_put_byte(fb, (duk_uint8_t) DUK_ASC_RBRACKET); - } - -#if defined(DUK_USE_REFERENCE_COUNTING) /* currently implicitly also DUK_USE_DOUBLE_LINKED_HEAP */ - if (st->heavy) { - duk_fb_sprintf(fb, - "[h_next=%p,h_prev=%p,h_refcount=%lu,h_flags=%08lx,type=%ld," - "reachable=%ld,temproot=%ld,finalizable=%ld,finalized=%ld]", - (void *) DUK_HEAPHDR_GET_NEXT(NULL, h), - (void *) DUK_HEAPHDR_GET_PREV(NULL, h), - (unsigned long) DUK_HEAPHDR_GET_REFCOUNT(h), - (unsigned long) DUK_HEAPHDR_GET_FLAGS(h), - (long) DUK_HEAPHDR_GET_TYPE(h), - (long) (DUK_HEAPHDR_HAS_REACHABLE(h) ? 1 : 0), - (long) (DUK_HEAPHDR_HAS_TEMPROOT(h) ? 1 : 0), - (long) (DUK_HEAPHDR_HAS_FINALIZABLE(h) ? 1 : 0), - (long) (DUK_HEAPHDR_HAS_FINALIZED(h) ? 1 : 0)); - } -#else - if (st->heavy) { - duk_fb_sprintf(fb, - "[h_next=%p,h_flags=%08lx,type=%ld,reachable=%ld,temproot=%ld,finalizable=%ld,finalized=%ld]", - (void *) DUK_HEAPHDR_GET_NEXT(NULL, h), - (unsigned long) DUK_HEAPHDR_GET_FLAGS(h), - (long) DUK_HEAPHDR_GET_TYPE(h), - (long) (DUK_HEAPHDR_HAS_REACHABLE(h) ? 1 : 0), - (long) (DUK_HEAPHDR_HAS_TEMPROOT(h) ? 1 : 0), - (long) (DUK_HEAPHDR_HAS_FINALIZABLE(h) ? 1 : 0), - (long) (DUK_HEAPHDR_HAS_FINALIZED(h) ? 1 : 0)); - } -#endif -} - -DUK_LOCAL void duk__print_shared_heaphdr_string(duk__dprint_state *st, duk_heaphdr_string *h) { - duk_fixedbuffer *fb = st->fb; - - if (st->heavy) { - duk_fb_sprintf(fb, "(%p)", (void *) h); - } - - if (!h) { - return; - } - - if (st->binary) { - duk_size_t i; - duk_fb_put_byte(fb, (duk_uint8_t) DUK_ASC_LBRACKET); - for (i = 0; i < (duk_size_t) sizeof(*h); i++) { - duk_fb_sprintf(fb, "%02lx", (unsigned long) ((duk_uint8_t *) h)[i]); - } - duk_fb_put_byte(fb, (duk_uint8_t) DUK_ASC_RBRACKET); - } - -#if defined(DUK_USE_REFERENCE_COUNTING) - if (st->heavy) { - duk_fb_sprintf(fb, - "[h_refcount=%lu,h_flags=%08lx,type=%ld,reachable=%ld,temproot=%ld,finalizable=%ld,finalized=%ld]", - (unsigned long) DUK_HEAPHDR_GET_REFCOUNT((duk_heaphdr *) h), - (unsigned long) DUK_HEAPHDR_GET_FLAGS((duk_heaphdr *) h), - (long) DUK_HEAPHDR_GET_TYPE((duk_heaphdr *) h), - (long) (DUK_HEAPHDR_HAS_REACHABLE((duk_heaphdr *) h) ? 1 : 0), - (long) (DUK_HEAPHDR_HAS_TEMPROOT((duk_heaphdr *) h) ? 1 : 0), - (long) (DUK_HEAPHDR_HAS_FINALIZABLE((duk_heaphdr *) h) ? 1 : 0), - (long) (DUK_HEAPHDR_HAS_FINALIZED((duk_heaphdr *) h) ? 1 : 0)); - } -#else - if (st->heavy) { - duk_fb_sprintf(fb, - "[h_flags=%08lx,type=%ld,reachable=%ld,temproot=%ld,finalizable=%ld,finalized=%ld]", - (unsigned long) DUK_HEAPHDR_GET_FLAGS((duk_heaphdr *) h), - (long) DUK_HEAPHDR_GET_TYPE((duk_heaphdr *) h), - (long) (DUK_HEAPHDR_HAS_REACHABLE((duk_heaphdr *) h) ? 1 : 0), - (long) (DUK_HEAPHDR_HAS_TEMPROOT((duk_heaphdr *) h) ? 1 : 0), - (long) (DUK_HEAPHDR_HAS_FINALIZABLE((duk_heaphdr *) h) ? 1 : 0), - (long) (DUK_HEAPHDR_HAS_FINALIZED((duk_heaphdr *) h) ? 1 : 0)); - } -#endif -} - -DUK_LOCAL void duk__print_hstring(duk__dprint_state *st, duk_hstring *h, duk_bool_t quotes) { - duk_fixedbuffer *fb = st->fb; - const duk_uint8_t *p; - const duk_uint8_t *p_end; - - /* terminal type: no depth check */ - - if (duk_fb_is_full(fb)) { - return; - } - - duk__print_shared_heaphdr_string(st, &h->hdr); - - if (!h) { - duk_fb_put_cstring(fb, "NULL"); - return; - } - - p = DUK_HSTRING_GET_DATA(h); - p_end = p + DUK_HSTRING_GET_BYTELEN(h); - - if (p_end > p && p[0] == DUK_ASC_UNDERSCORE) { - /* If property key begins with underscore, encode it with - * forced quotes (e.g. "_Foo") to distinguish it from encoded - * internal properties (e.g. \x82Bar -> _Bar). - */ - quotes = 1; - } - - if (quotes) { - duk_fb_put_byte(fb, (duk_uint8_t) DUK_ASC_DOUBLEQUOTE); - } - while (p < p_end) { - duk_uint8_t ch = *p++; - - /* two special escapes: '\' and '"', other printables as is */ - if (ch == '\\') { - duk_fb_sprintf(fb, "\\\\"); - } else if (ch == '"') { - duk_fb_sprintf(fb, "\\\""); - } else if (ch >= 0x20 && ch <= 0x7e) { - duk_fb_put_byte(fb, ch); - } else if (ch == 0x82 && !quotes) { - /* encode \x82Bar as _Bar if no quotes are - * applied, this is for readable internal keys. - */ - duk_fb_put_byte(fb, (duk_uint8_t) DUK_ASC_UNDERSCORE); - } else { - duk_fb_sprintf(fb, "\\x%02lx", (unsigned long) ch); - } - } - if (quotes) { - duk_fb_put_byte(fb, (duk_uint8_t) DUK_ASC_DOUBLEQUOTE); - } -#if defined(DUK_USE_REFERENCE_COUNTING) - /* XXX: limit to quoted strings only, to save keys from being cluttered? */ - duk_fb_sprintf(fb, "/%lu", (unsigned long) DUK_HEAPHDR_GET_REFCOUNT(&h->hdr)); -#endif -} - -#define DUK__COMMA() \ - do { \ - if (first) { \ - first = 0; \ - } else { \ - duk_fb_put_byte(fb, (duk_uint8_t) DUK_ASC_COMMA); \ - } \ - } while (0) - -DUK_LOCAL void duk__print_hobject(duk__dprint_state *st, duk_hobject *h) { - duk_fixedbuffer *fb = st->fb; - duk_uint_fast32_t i; - duk_tval *tv; - duk_hstring *key; - duk_bool_t first = 1; - const char *brace1 = "{"; - const char *brace2 = "}"; - duk_bool_t pushed_loopstack = 0; - - if (duk_fb_is_full(fb)) { - return; - } - - duk__print_shared_heaphdr(st, &h->hdr); - - if (h && DUK_HOBJECT_HAS_ARRAY_PART(h)) { - brace1 = "["; - brace2 = "]"; - } - - if (!h) { - duk_fb_put_cstring(fb, "NULL"); - goto finished; - } - - if (st->depth >= st->depth_limit) { - const char *subtype = "generic"; - - if (DUK_HOBJECT_IS_COMPFUNC(h)) { - subtype = "compfunc"; - } else if (DUK_HOBJECT_IS_NATFUNC(h)) { - subtype = "natfunc"; - } else if (DUK_HOBJECT_IS_THREAD(h)) { - subtype = "thread"; - } else if (DUK_HOBJECT_IS_BUFOBJ(h)) { - subtype = "bufobj"; - } else if (DUK_HOBJECT_IS_ARRAY(h)) { - subtype = "array"; - } - duk_fb_sprintf(fb, "%sobject/%s %p%s", (const char *) brace1, subtype, (void *) h, (const char *) brace2); - return; - } - - for (i = 0; i < (duk_uint_fast32_t) st->loop_stack_index; i++) { - if (st->loop_stack[i] == h) { - duk_fb_sprintf(fb, "%sLOOP:%p%s", (const char *) brace1, (void *) h, (const char *) brace2); - return; - } - } - - /* after this, return paths should 'goto finished' for decrement */ - st->depth++; - - if (st->loop_stack_index >= st->loop_stack_limit) { - duk_fb_sprintf(fb, "%sOUT-OF-LOOP-STACK%s", (const char *) brace1, (const char *) brace2); - goto finished; - } - st->loop_stack[st->loop_stack_index++] = h; - pushed_loopstack = 1; - - /* - * Notation: double underscore used for internal properties which are not - * stored in the property allocation (e.g. '__valstack'). - */ - - duk_fb_put_cstring(fb, brace1); - - if (DUK_HOBJECT_GET_PROPS(NULL, h)) { - duk_uint32_t a_limit; - - a_limit = DUK_HOBJECT_GET_ASIZE(h); - if (st->internal) { - /* dump all allocated entries, unused entries print as 'unused', - * note that these may extend beyond current 'length' and look - * a bit funny. - */ - } else { - /* leave out trailing 'unused' elements */ - while (a_limit > 0) { - tv = DUK_HOBJECT_A_GET_VALUE_PTR(NULL, h, a_limit - 1); - if (!DUK_TVAL_IS_UNUSED(tv)) { - break; - } - a_limit--; - } - } - - for (i = 0; i < a_limit; i++) { - tv = DUK_HOBJECT_A_GET_VALUE_PTR(NULL, h, i); - DUK__COMMA(); - duk__print_tval(st, tv); - } - for (i = 0; i < DUK_HOBJECT_GET_ENEXT(h); i++) { - key = DUK_HOBJECT_E_GET_KEY(NULL, h, i); - if (!key) { - continue; - } - if (!st->internal && DUK_HSTRING_HAS_HIDDEN(key)) { - continue; - } - DUK__COMMA(); - duk__print_hstring(st, key, 0); - duk_fb_put_byte(fb, (duk_uint8_t) DUK_ASC_COLON); - if (DUK_HOBJECT_E_SLOT_IS_ACCESSOR(NULL, h, i)) { - duk_fb_sprintf(fb, - "[get:%p,set:%p]", - (void *) DUK_HOBJECT_E_GET_VALUE(NULL, h, i).a.get, - (void *) DUK_HOBJECT_E_GET_VALUE(NULL, h, i).a.set); - } else { - tv = &DUK_HOBJECT_E_GET_VALUE(NULL, h, i).v; - duk__print_tval(st, tv); - } - if (st->heavy) { - duk_fb_sprintf(fb, "<%02lx>", (unsigned long) DUK_HOBJECT_E_GET_FLAGS(NULL, h, i)); - } - } - } - if (st->internal) { - if (DUK_HOBJECT_IS_ARRAY(h)) { - DUK__COMMA(); - duk_fb_sprintf(fb, "__array:true"); - } - if (DUK_HOBJECT_HAS_EXTENSIBLE(h)) { - DUK__COMMA(); - duk_fb_sprintf(fb, "__extensible:true"); - } - if (DUK_HOBJECT_HAS_CONSTRUCTABLE(h)) { - DUK__COMMA(); - duk_fb_sprintf(fb, "__constructable:true"); - } - if (DUK_HOBJECT_HAS_BOUNDFUNC(h)) { - DUK__COMMA(); - duk_fb_sprintf(fb, "__boundfunc:true"); - } - if (DUK_HOBJECT_HAS_COMPFUNC(h)) { - DUK__COMMA(); - duk_fb_sprintf(fb, "__compfunc:true"); - } - if (DUK_HOBJECT_HAS_NATFUNC(h)) { - DUK__COMMA(); - duk_fb_sprintf(fb, "__natfunc:true"); - } - if (DUK_HOBJECT_HAS_BUFOBJ(h)) { - DUK__COMMA(); - duk_fb_sprintf(fb, "__bufobj:true"); - } - if (DUK_HOBJECT_IS_THREAD(h)) { - DUK__COMMA(); - duk_fb_sprintf(fb, "__thread:true"); - } - if (DUK_HOBJECT_HAS_ARRAY_PART(h)) { - DUK__COMMA(); - duk_fb_sprintf(fb, "__array_part:true"); - } - if (DUK_HOBJECT_HAS_STRICT(h)) { - DUK__COMMA(); - duk_fb_sprintf(fb, "__strict:true"); - } - if (DUK_HOBJECT_HAS_NOTAIL(h)) { - DUK__COMMA(); - duk_fb_sprintf(fb, "__notail:true"); - } - if (DUK_HOBJECT_HAS_NEWENV(h)) { - DUK__COMMA(); - duk_fb_sprintf(fb, "__newenv:true"); - } - if (DUK_HOBJECT_HAS_NAMEBINDING(h)) { - DUK__COMMA(); - duk_fb_sprintf(fb, "__namebinding:true"); - } - if (DUK_HOBJECT_HAS_CREATEARGS(h)) { - DUK__COMMA(); - duk_fb_sprintf(fb, "__createargs:true"); - } - if (DUK_HOBJECT_HAS_EXOTIC_ARRAY(h)) { - DUK__COMMA(); - duk_fb_sprintf(fb, "__exotic_array:true"); - } - if (DUK_HOBJECT_HAS_EXOTIC_STRINGOBJ(h)) { - DUK__COMMA(); - duk_fb_sprintf(fb, "__exotic_stringobj:true"); - } - if (DUK_HOBJECT_HAS_EXOTIC_ARGUMENTS(h)) { - DUK__COMMA(); - duk_fb_sprintf(fb, "__exotic_arguments:true"); - } - if (DUK_HOBJECT_IS_BUFOBJ(h)) { - DUK__COMMA(); - duk_fb_sprintf(fb, "__exotic_bufobj:true"); - } - if (DUK_HOBJECT_HAS_EXOTIC_PROXYOBJ(h)) { - DUK__COMMA(); - duk_fb_sprintf(fb, "__exotic_proxyobj:true"); - } - } - - if (st->internal && DUK_HOBJECT_IS_ARRAY(h)) { - duk_harray *a = (duk_harray *) h; - DUK__COMMA(); - duk_fb_sprintf(fb, "__length:%ld", (long) a->length); - DUK__COMMA(); - duk_fb_sprintf(fb, "__length_nonwritable:%ld", (long) a->length_nonwritable); - } else if (st->internal && DUK_HOBJECT_IS_COMPFUNC(h)) { - duk_hcompfunc *f = (duk_hcompfunc *) h; - DUK__COMMA(); - duk_fb_put_cstring(fb, "__data:"); - duk__print_hbuffer(st, (duk_hbuffer *) DUK_HCOMPFUNC_GET_DATA(NULL, f)); - DUK__COMMA(); - duk_fb_put_cstring(fb, "__lexenv:"); - duk__print_hobject(st, DUK_HCOMPFUNC_GET_LEXENV(NULL, f)); - DUK__COMMA(); - duk_fb_put_cstring(fb, "__varenv:"); - duk__print_hobject(st, DUK_HCOMPFUNC_GET_VARENV(NULL, f)); - DUK__COMMA(); - duk_fb_sprintf(fb, "__nregs:%ld", (long) f->nregs); - DUK__COMMA(); - duk_fb_sprintf(fb, "__nargs:%ld", (long) f->nargs); -#if defined(DUK_USE_DEBUGGER_SUPPORT) - DUK__COMMA(); - duk_fb_sprintf(fb, "__start_line:%ld", (long) f->start_line); - DUK__COMMA(); - duk_fb_sprintf(fb, "__end_line:%ld", (long) f->end_line); -#endif - DUK__COMMA(); - duk_fb_put_cstring(fb, "__data:"); - duk__print_hbuffer(st, (duk_hbuffer *) DUK_HCOMPFUNC_GET_DATA(NULL, f)); - } else if (st->internal && DUK_HOBJECT_IS_NATFUNC(h)) { - duk_hnatfunc *f = (duk_hnatfunc *) h; - DUK__COMMA(); - duk_fb_sprintf(fb, "__func:"); - duk_fb_put_funcptr(fb, (duk_uint8_t *) &f->func, sizeof(f->func)); - DUK__COMMA(); - duk_fb_sprintf(fb, "__nargs:%ld", (long) f->nargs); - DUK__COMMA(); - duk_fb_sprintf(fb, "__magic:%ld", (long) f->magic); - } else if (st->internal && DUK_HOBJECT_IS_DECENV(h)) { - duk_hdecenv *e = (duk_hdecenv *) h; - DUK__COMMA(); - duk_fb_sprintf(fb, "__thread:"); - duk__print_hobject(st, (duk_hobject *) e->thread); - DUK__COMMA(); - duk_fb_sprintf(fb, "__varmap:"); - duk__print_hobject(st, (duk_hobject *) e->varmap); - DUK__COMMA(); - duk_fb_sprintf(fb, "__regbase_byteoff:%ld", (long) e->regbase_byteoff); - } else if (st->internal && DUK_HOBJECT_IS_OBJENV(h)) { - duk_hobjenv *e = (duk_hobjenv *) h; - DUK__COMMA(); - duk_fb_sprintf(fb, "__target:"); - duk__print_hobject(st, (duk_hobject *) e->target); - DUK__COMMA(); - duk_fb_sprintf(fb, "__has_this:%ld", (long) e->has_this); -#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) - } else if (st->internal && DUK_HOBJECT_IS_BUFOBJ(h)) { - duk_hbufobj *b = (duk_hbufobj *) h; - DUK__COMMA(); - duk_fb_sprintf(fb, "__buf:"); - duk__print_hbuffer(st, (duk_hbuffer *) b->buf); - DUK__COMMA(); - duk_fb_sprintf(fb, "__buf_prop:"); - duk__print_hobject(st, (duk_hobject *) b->buf_prop); - DUK__COMMA(); - duk_fb_sprintf(fb, "__offset:%ld", (long) b->offset); - DUK__COMMA(); - duk_fb_sprintf(fb, "__length:%ld", (long) b->length); - DUK__COMMA(); - duk_fb_sprintf(fb, "__shift:%ld", (long) b->shift); - DUK__COMMA(); - duk_fb_sprintf(fb, "__elemtype:%ld", (long) b->elem_type); -#endif - } else if (st->internal && DUK_HOBJECT_IS_PROXY(h)) { - duk_hproxy *p = (duk_hproxy *) h; - DUK__COMMA(); - duk_fb_sprintf(fb, "__target:"); - duk__print_hobject(st, p->target); - DUK__COMMA(); - duk_fb_sprintf(fb, "__handler:"); - duk__print_hobject(st, p->handler); - } else if (st->internal && DUK_HOBJECT_IS_THREAD(h)) { - duk_hthread *t = (duk_hthread *) h; - DUK__COMMA(); - duk_fb_sprintf(fb, "__ptr_curr_pc:%p", (void *) t->ptr_curr_pc); - DUK__COMMA(); - duk_fb_sprintf(fb, "__heap:%p", (void *) t->heap); - DUK__COMMA(); - duk_fb_sprintf(fb, "__strict:%ld", (long) t->strict); - DUK__COMMA(); - duk_fb_sprintf(fb, "__state:%ld", (long) t->state); - DUK__COMMA(); - duk_fb_sprintf(fb, "__unused1:%ld", (long) t->unused1); - DUK__COMMA(); - duk_fb_sprintf(fb, "__unused2:%ld", (long) t->unused2); - DUK__COMMA(); - duk_fb_sprintf(fb, "__valstack:%p", (void *) t->valstack); - DUK__COMMA(); - duk_fb_sprintf(fb, "__valstack_end:%p/%ld", (void *) t->valstack_end, (long) (t->valstack_end - t->valstack)); - DUK__COMMA(); - duk_fb_sprintf(fb, - "__valstack_alloc_end:%p/%ld", - (void *) t->valstack_alloc_end, - (long) (t->valstack_alloc_end - t->valstack)); - DUK__COMMA(); - duk_fb_sprintf(fb, - "__valstack_bottom:%p/%ld", - (void *) t->valstack_bottom, - (long) (t->valstack_bottom - t->valstack)); - DUK__COMMA(); - duk_fb_sprintf(fb, "__valstack_top:%p/%ld", (void *) t->valstack_top, (long) (t->valstack_top - t->valstack)); - DUK__COMMA(); - duk_fb_sprintf(fb, "__callstack_curr:%p", (void *) t->callstack_curr); - DUK__COMMA(); - duk_fb_sprintf(fb, "__callstack_top:%ld", (long) t->callstack_top); - DUK__COMMA(); - duk_fb_sprintf(fb, "__callstack_preventcount:%ld", (long) t->callstack_preventcount); - DUK__COMMA(); - duk_fb_sprintf(fb, "__resumer:"); - duk__print_hobject(st, (duk_hobject *) t->resumer); - DUK__COMMA(); - duk_fb_sprintf(fb, "__compile_ctx:%p", (void *) t->compile_ctx); -#if defined(DUK_USE_INTERRUPT_COUNTER) - DUK__COMMA(); - duk_fb_sprintf(fb, "__interrupt_counter:%ld", (long) t->interrupt_counter); - DUK__COMMA(); - duk_fb_sprintf(fb, "__interrupt_init:%ld", (long) t->interrupt_init); -#endif - - /* XXX: print built-ins array? */ - } -#if defined(DUK_USE_REFERENCE_COUNTING) - if (st->internal) { - DUK__COMMA(); - duk_fb_sprintf(fb, "__refcount:%lu", (unsigned long) DUK_HEAPHDR_GET_REFCOUNT((duk_heaphdr *) h)); - } -#endif - if (st->internal) { - DUK__COMMA(); - duk_fb_sprintf(fb, "__class:%ld", (long) DUK_HOBJECT_GET_CLASS_NUMBER(h)); - } - - DUK__COMMA(); - duk_fb_sprintf(fb, "__heapptr:%p", (void *) h); /* own pointer */ - - /* prototype should be last, for readability */ - if (DUK_HOBJECT_GET_PROTOTYPE(NULL, h)) { - if (st->follow_proto) { - DUK__COMMA(); - duk_fb_put_cstring(fb, "__prototype:"); - duk__print_hobject(st, DUK_HOBJECT_GET_PROTOTYPE(NULL, h)); - } else { - DUK__COMMA(); - duk_fb_sprintf(fb, "__prototype:%p", (void *) DUK_HOBJECT_GET_PROTOTYPE(NULL, h)); - } - } - - duk_fb_put_cstring(fb, brace2); - -#if defined(DUK_USE_HOBJECT_HASH_PART) - if (st->heavy && DUK_HOBJECT_GET_HSIZE(h) > 0) { - duk_fb_put_byte(fb, (duk_uint8_t) DUK_ASC_LANGLE); - for (i = 0; i < DUK_HOBJECT_GET_HSIZE(h); i++) { - duk_uint_t h_idx = DUK_HOBJECT_H_GET_INDEX(NULL, h, i); - if (i > 0) { - duk_fb_put_byte(fb, (duk_uint8_t) DUK_ASC_COMMA); - } - if (h_idx == DUK_HOBJECT_HASHIDX_UNUSED) { - duk_fb_sprintf(fb, "u"); - } else if (h_idx == DUK_HOBJECT_HASHIDX_DELETED) { - duk_fb_sprintf(fb, "d"); - } else { - duk_fb_sprintf(fb, "%ld", (long) h_idx); - } - } - duk_fb_put_byte(fb, (duk_uint8_t) DUK_ASC_RANGLE); - } -#endif - -finished: - st->depth--; - if (pushed_loopstack) { - st->loop_stack_index--; - st->loop_stack[st->loop_stack_index] = NULL; - } -} - -DUK_LOCAL void duk__print_hbuffer(duk__dprint_state *st, duk_hbuffer *h) { - duk_fixedbuffer *fb = st->fb; - duk_size_t i, n; - duk_uint8_t *p; - - if (duk_fb_is_full(fb)) { - return; - } - - /* terminal type: no depth check */ - - if (!h) { - duk_fb_put_cstring(fb, "NULL"); - return; - } - - if (DUK_HBUFFER_HAS_DYNAMIC(h)) { - if (DUK_HBUFFER_HAS_EXTERNAL(h)) { - duk_hbuffer_external *g = (duk_hbuffer_external *) h; - duk_fb_sprintf(fb, - "buffer:external:%p:%ld", - (void *) DUK_HBUFFER_EXTERNAL_GET_DATA_PTR(NULL, g), - (long) DUK_HBUFFER_EXTERNAL_GET_SIZE(g)); - } else { - duk_hbuffer_dynamic *g = (duk_hbuffer_dynamic *) h; - duk_fb_sprintf(fb, - "buffer:dynamic:%p:%ld", - (void *) DUK_HBUFFER_DYNAMIC_GET_DATA_PTR(NULL, g), - (long) DUK_HBUFFER_DYNAMIC_GET_SIZE(g)); - } - } else { - duk_fb_sprintf(fb, "buffer:fixed:%ld", (long) DUK_HBUFFER_GET_SIZE(h)); - } - -#if defined(DUK_USE_REFERENCE_COUNTING) - duk_fb_sprintf(fb, "/%lu", (unsigned long) DUK_HEAPHDR_GET_REFCOUNT(&h->hdr)); -#endif - - if (st->hexdump) { - duk_fb_sprintf(fb, "=["); - n = DUK_HBUFFER_GET_SIZE(h); - p = (duk_uint8_t *) DUK_HBUFFER_GET_DATA_PTR(NULL, h); - for (i = 0; i < n; i++) { - duk_fb_sprintf(fb, "%02lx", (unsigned long) p[i]); - } - duk_fb_sprintf(fb, "]"); - } -} - -DUK_LOCAL void duk__print_heaphdr(duk__dprint_state *st, duk_heaphdr *h) { - duk_fixedbuffer *fb = st->fb; - - if (duk_fb_is_full(fb)) { - return; - } - - if (!h) { - duk_fb_put_cstring(fb, "NULL"); - return; - } - - switch (DUK_HEAPHDR_GET_TYPE(h)) { - case DUK_HTYPE_STRING: - duk__print_hstring(st, (duk_hstring *) h, 1); - break; - case DUK_HTYPE_OBJECT: - duk__print_hobject(st, (duk_hobject *) h); - break; - case DUK_HTYPE_BUFFER: - duk__print_hbuffer(st, (duk_hbuffer *) h); - break; - default: - duk_fb_sprintf(fb, "[unknown htype %ld]", (long) DUK_HEAPHDR_GET_TYPE(h)); - break; - } -} - -DUK_LOCAL void duk__print_tval(duk__dprint_state *st, duk_tval *tv) { - duk_fixedbuffer *fb = st->fb; - - if (duk_fb_is_full(fb)) { - return; - } - - /* depth check is done when printing an actual type */ - - if (st->heavy) { - duk_fb_sprintf(fb, "(%p)", (void *) tv); - } - - if (!tv) { - duk_fb_put_cstring(fb, "NULL"); - return; - } - - if (st->binary) { - duk_size_t i; - duk_fb_put_byte(fb, (duk_uint8_t) DUK_ASC_LBRACKET); - for (i = 0; i < (duk_size_t) sizeof(*tv); i++) { - duk_fb_sprintf(fb, "%02lx", (unsigned long) ((duk_uint8_t *) tv)[i]); - } - duk_fb_put_byte(fb, (duk_uint8_t) DUK_ASC_RBRACKET); - } - - if (st->heavy) { - duk_fb_put_byte(fb, (duk_uint8_t) DUK_ASC_LANGLE); - } - switch (DUK_TVAL_GET_TAG(tv)) { - case DUK_TAG_UNDEFINED: { - duk_fb_put_cstring(fb, "undefined"); - break; - } - case DUK_TAG_UNUSED: { - duk_fb_put_cstring(fb, "unused"); - break; - } - case DUK_TAG_NULL: { - duk_fb_put_cstring(fb, "null"); - break; - } - case DUK_TAG_BOOLEAN: { - duk_fb_put_cstring(fb, DUK_TVAL_GET_BOOLEAN(tv) ? "true" : "false"); - break; - } - case DUK_TAG_STRING: { - /* Note: string is a terminal heap object, so no depth check here */ - duk__print_hstring(st, DUK_TVAL_GET_STRING(tv), 1); - break; - } - case DUK_TAG_OBJECT: { - duk__print_hobject(st, DUK_TVAL_GET_OBJECT(tv)); - break; - } - case DUK_TAG_BUFFER: { - duk__print_hbuffer(st, DUK_TVAL_GET_BUFFER(tv)); - break; - } - case DUK_TAG_POINTER: { - duk_fb_sprintf(fb, "pointer:%p", (void *) DUK_TVAL_GET_POINTER(tv)); - break; - } - case DUK_TAG_LIGHTFUNC: { - duk_c_function func; - duk_small_uint_t lf_flags; - - DUK_TVAL_GET_LIGHTFUNC(tv, func, lf_flags); - duk_fb_sprintf(fb, "lightfunc:"); - duk_fb_put_funcptr(fb, (duk_uint8_t *) &func, sizeof(func)); - duk_fb_sprintf(fb, ":%04lx", (long) lf_flags); - break; - } -#if defined(DUK_USE_FASTINT) - case DUK_TAG_FASTINT: - DUK_ASSERT(!DUK_TVAL_IS_UNUSED(tv)); - DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv)); - duk_fb_sprintf(fb, "%.18g_F", (double) DUK_TVAL_GET_NUMBER(tv)); - break; -#endif - default: { - /* IEEE double is approximately 16 decimal digits; print a couple extra */ - DUK_ASSERT(!DUK_TVAL_IS_UNUSED(tv)); - DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv)); - duk_fb_sprintf(fb, "%.18g", (double) DUK_TVAL_GET_NUMBER(tv)); - break; - } - } - if (st->heavy) { - duk_fb_put_byte(fb, (duk_uint8_t) DUK_ASC_RANGLE); - } -} - -DUK_LOCAL void duk__print_instr(duk__dprint_state *st, duk_instr_t ins) { - duk_fixedbuffer *fb = st->fb; - duk_small_int_t op; - const char *op_name; - - op = (duk_small_int_t) DUK_DEC_OP(ins); - op_name = duk__bc_optab[op]; - - /* XXX: option to fix opcode length so it lines up nicely */ - - if (op == DUK_OP_JUMP) { - duk_int_t diff1 = (duk_int_t) (DUK_DEC_ABC(ins) - DUK_BC_JUMP_BIAS); /* from next pc */ - duk_int_t diff2 = diff1 + 1; /* from curr pc */ - - duk_fb_sprintf(fb, - "%s %ld (to pc%c%ld)", - (const char *) op_name, - (long) diff1, - (int) (diff2 >= 0 ? '+' : '-'), /* char format: use int */ - (long) (diff2 >= 0 ? diff2 : -diff2)); - } else { - duk_fb_sprintf(fb, - "%s %ld, %ld, %ld", - (const char *) op_name, - (long) DUK_DEC_A(ins), - (long) DUK_DEC_B(ins), - (long) DUK_DEC_C(ins)); - } -} - -DUK_LOCAL void duk__print_opcode(duk__dprint_state *st, duk_small_int_t opcode) { - duk_fixedbuffer *fb = st->fb; - - if (opcode < DUK_BC_OP_MIN || opcode > DUK_BC_OP_MAX) { - duk_fb_sprintf(fb, "?(%ld)", (long) opcode); - } else { - duk_fb_sprintf(fb, "%s", (const char *) duk__bc_optab[opcode]); - } -} - -DUK_LOCAL void duk__print_catcher(duk__dprint_state *st, duk_catcher *cat) { - duk_fixedbuffer *fb = st->fb; - - if (duk_fb_is_full(fb)) { - return; - } - - if (!cat) { - duk_fb_put_cstring(fb, "NULL"); - return; - } - - duk_fb_sprintf(fb, - "[catcher ptr=%p parent=%p varname=%p pc_base=%p, idx_base=%ld, flags=0x%08lx]", - (void *) cat, - (void *) cat->parent, - (void *) cat->h_varname, - (void *) cat->pc_base, - (long) cat->idx_base, - (unsigned long) cat->flags); -} - -DUK_LOCAL void duk__print_activation(duk__dprint_state *st, duk_activation *act) { - duk_fixedbuffer *fb = st->fb; - - if (duk_fb_is_full(fb)) { - return; - } - - if (!act) { - duk_fb_put_cstring(fb, "NULL"); - return; - } - - /* prev_caller: conditional, omitted on purpose, it's rarely used. */ - /* prev_line: conditional, omitted on purpose (but would be nice). */ - duk_fb_sprintf(fb, - "[activation ptr=%p tv_func= func=%p parent=%p var_env=%p lex_env=%p cat=%p curr_pc=%p " - "bottom_byteoff=%ld retval_byteoff=%ld reserve_byteoff=%ld flags=%ld]", - (void *) act, - (void *) act->func, - (void *) act->parent, - (void *) act->var_env, - (void *) act->lex_env, - (void *) act->cat, - (void *) act->curr_pc, - (long) act->bottom_byteoff, - (long) act->retval_byteoff, - (long) act->reserve_byteoff, - (long) act->flags); -} - -DUK_INTERNAL duk_int_t duk_debug_vsnprintf(char *str, duk_size_t size, const char *format, va_list ap) { - duk_fixedbuffer fb; - const char *p = format; - const char *p_end = p + DUK_STRLEN(format); - duk_int_t retval; - - duk_memzero(&fb, sizeof(fb)); - fb.buffer = (duk_uint8_t *) str; - fb.length = size; - fb.offset = 0; - fb.truncated = 0; - - while (p < p_end) { - char ch = *p++; - const char *p_begfmt = NULL; - duk_bool_t got_exclamation = 0; - duk_bool_t got_long = 0; /* %lf, %ld etc */ - duk__dprint_state st; - - if (ch != DUK_ASC_PERCENT) { - duk_fb_put_byte(&fb, (duk_uint8_t) ch); - continue; - } - - /* - * Format tag parsing. Since we don't understand all the - * possible format tags allowed, we just scan for a terminating - * specifier and keep track of relevant modifiers that we do - * understand. See man 3 printf. - */ - - duk_memzero(&st, sizeof(st)); - st.fb = &fb; - st.depth = 0; - st.depth_limit = 1; - st.loop_stack_index = 0; - st.loop_stack_limit = DUK__LOOP_STACK_DEPTH; - - p_begfmt = p - 1; - while (p < p_end) { - ch = *p++; - - if (ch == DUK_ASC_STAR) { - /* unsupported: would consume multiple args */ - goto format_error; - } else if (ch == DUK_ASC_PERCENT) { - duk_fb_put_byte(&fb, (duk_uint8_t) DUK_ASC_PERCENT); - break; - } else if (ch == DUK_ASC_EXCLAMATION) { - got_exclamation = 1; - } else if (!got_exclamation && ch == DUK_ASC_LC_L) { - got_long = 1; - } else if (got_exclamation && ch == DUK_ASC_LC_D) { - st.depth_limit = DUK__DEEP_DEPTH_LIMIT; - } else if (got_exclamation && ch == DUK_ASC_LC_P) { - st.follow_proto = 1; - } else if (got_exclamation && ch == DUK_ASC_LC_I) { - st.internal = 1; - } else if (got_exclamation && ch == DUK_ASC_LC_X) { - st.hexdump = 1; - } else if (got_exclamation && ch == DUK_ASC_LC_H) { - st.heavy = 1; - } else if (got_exclamation && ch == DUK_ASC_ATSIGN) { - st.pointer = 1; - } else if (got_exclamation && ch == DUK_ASC_HASH) { - st.binary = 1; - } else if (got_exclamation && ch == DUK_ASC_UC_T) { - duk_tval *t = va_arg(ap, duk_tval *); - if (st.pointer && !st.heavy) { - duk_fb_sprintf(&fb, "(%p)", (void *) t); - } - duk__print_tval(&st, t); - break; - } else if (got_exclamation && ch == DUK_ASC_UC_O) { - duk_heaphdr *t = va_arg(ap, duk_heaphdr *); - if (st.pointer && !st.heavy) { - duk_fb_sprintf(&fb, "(%p)", (void *) t); - } - duk__print_heaphdr(&st, t); - break; - } else if (got_exclamation && ch == DUK_ASC_UC_I) { - duk_instr_t t = va_arg(ap, duk_instr_t); - duk__print_instr(&st, t); - break; - } else if (got_exclamation && ch == DUK_ASC_UC_X) { - long t = va_arg(ap, long); - duk__print_opcode(&st, (duk_small_int_t) t); - break; - } else if (got_exclamation && ch == DUK_ASC_UC_C) { - duk_catcher *t = va_arg(ap, duk_catcher *); - duk__print_catcher(&st, t); - break; - } else if (got_exclamation && ch == DUK_ASC_UC_A) { - duk_activation *t = va_arg(ap, duk_activation *); - duk__print_activation(&st, t); - break; - } else if (!got_exclamation && strchr(DUK__ALLOWED_STANDARD_SPECIFIERS, (int) ch)) { - char fmtbuf[DUK__MAX_FORMAT_TAG_LENGTH]; - duk_size_t fmtlen; - - DUK_ASSERT(p >= p_begfmt); - fmtlen = (duk_size_t) (p - p_begfmt); - if (fmtlen >= sizeof(fmtbuf)) { - /* format is too large, abort */ - goto format_error; - } - duk_memzero(fmtbuf, sizeof(fmtbuf)); - duk_memcpy(fmtbuf, p_begfmt, fmtlen); - - /* assume exactly 1 arg, which is why '*' is forbidden; arg size still - * depends on type though. - */ - - if (ch == DUK_ASC_LC_F || ch == DUK_ASC_LC_G || ch == DUK_ASC_LC_E) { - /* %f and %lf both consume a 'long' */ - double arg = va_arg(ap, double); - duk_fb_sprintf(&fb, fmtbuf, arg); - } else if (ch == DUK_ASC_LC_D && got_long) { - /* %ld */ - long arg = va_arg(ap, long); - duk_fb_sprintf(&fb, fmtbuf, arg); - } else if (ch == DUK_ASC_LC_D) { - /* %d; only 16 bits are guaranteed */ - int arg = va_arg(ap, int); - duk_fb_sprintf(&fb, fmtbuf, arg); - } else if (ch == DUK_ASC_LC_U && got_long) { - /* %lu */ - unsigned long arg = va_arg(ap, unsigned long); - duk_fb_sprintf(&fb, fmtbuf, arg); - } else if (ch == DUK_ASC_LC_U) { - /* %u; only 16 bits are guaranteed */ - unsigned int arg = va_arg(ap, unsigned int); - duk_fb_sprintf(&fb, fmtbuf, arg); - } else if (ch == DUK_ASC_LC_X && got_long) { - /* %lx */ - unsigned long arg = va_arg(ap, unsigned long); - duk_fb_sprintf(&fb, fmtbuf, arg); - } else if (ch == DUK_ASC_LC_X) { - /* %x; only 16 bits are guaranteed */ - unsigned int arg = va_arg(ap, unsigned int); - duk_fb_sprintf(&fb, fmtbuf, arg); - } else if (ch == DUK_ASC_LC_S) { - /* %s */ - const char *arg = va_arg(ap, const char *); - if (arg == NULL) { - /* '%s' and NULL is not portable, so special case - * it for debug printing. - */ - duk_fb_sprintf(&fb, "NULL"); - } else { - duk_fb_sprintf(&fb, fmtbuf, arg); - } - } else if (ch == DUK_ASC_LC_P) { - /* %p */ - void *arg = va_arg(ap, void *); - if (arg == NULL) { - /* '%p' and NULL is portable, but special case it - * anyway to get a standard NULL marker in logs. - */ - duk_fb_sprintf(&fb, "NULL"); - } else { - duk_fb_sprintf(&fb, fmtbuf, arg); - } - } else if (ch == DUK_ASC_LC_C) { - /* '%c', passed concretely as int */ - int arg = va_arg(ap, int); - duk_fb_sprintf(&fb, fmtbuf, arg); - } else { - /* Should not happen. */ - duk_fb_sprintf(&fb, "INVALID-FORMAT(%s)", (const char *) fmtbuf); - } - break; - } else { - /* ignore */ - } - } - } - goto done; - -format_error: - duk_fb_put_cstring(&fb, "FMTERR"); - /* fall through */ - -done: - retval = (duk_int_t) fb.offset; - duk_fb_put_byte(&fb, (duk_uint8_t) 0); - - /* return total chars written excluding terminator */ - return retval; -} - -#if 0 /*unused*/ -DUK_INTERNAL duk_int_t duk_debug_snprintf(char *str, duk_size_t size, const char *format, ...) { - duk_int_t retval; - va_list ap; - va_start(ap, format); - retval = duk_debug_vsnprintf(str, size, format, ap); - va_end(ap); - return retval; -} -#endif - -/* Formatting function pointers is tricky: there is no standard pointer for - * function pointers and the size of a function pointer may depend on the - * specific pointer type. This helper formats a function pointer based on - * its memory layout to get something useful on most platforms. - */ -DUK_INTERNAL void duk_debug_format_funcptr(char *buf, duk_size_t buf_size, duk_uint8_t *fptr, duk_size_t fptr_size) { - duk_size_t i; - duk_uint8_t *p = (duk_uint8_t *) buf; - duk_uint8_t *p_end = (duk_uint8_t *) (buf + buf_size - 1); - - DUK_ASSERT(buf != NULL); - duk_memzero(buf, buf_size); - - for (i = 0; i < fptr_size; i++) { - duk_int_t left = (duk_int_t) (p_end - p); - duk_uint8_t ch; - if (left <= 0) { - break; - } - - /* Quite approximate but should be useful for little and big endian. */ -#if defined(DUK_USE_INTEGER_BE) - ch = fptr[i]; -#else - ch = fptr[fptr_size - 1 - i]; -#endif - p += DUK_SNPRINTF((char *) p, (duk_size_t) left, "%02lx", (unsigned long) ch); - } -} - -#endif /* DUK_USE_DEBUG */ - -/* automatic undefs */ -#undef DUK__ALLOWED_STANDARD_SPECIFIERS -#undef DUK__COMMA -#undef DUK__DEEP_DEPTH_LIMIT -#undef DUK__LOOP_STACK_DEPTH -#undef DUK__MAX_FORMAT_TAG_LENGTH -#line 1 "duk_debugger.c" -/* - * Duktape debugger - */ - -/* #include duk_internal.h -> already included */ - -#if defined(DUK_USE_DEBUGGER_SUPPORT) - -/* - * Assert helpers - */ - -#if defined(DUK_USE_ASSERTIONS) -#define DUK__DBG_TPORT_ENTER() \ - do { \ - DUK_ASSERT(heap->dbg_calling_transport == 0); \ - heap->dbg_calling_transport = 1; \ - } while (0) -#define DUK__DBG_TPORT_EXIT() \ - do { \ - DUK_ASSERT(heap->dbg_calling_transport == 1); \ - heap->dbg_calling_transport = 0; \ - } while (0) -#else -#define DUK__DBG_TPORT_ENTER() \ - do { \ - } while (0) -#define DUK__DBG_TPORT_EXIT() \ - do { \ - } while (0) -#endif - -/* - * Helper structs - */ - -typedef union { - void *p; - duk_uint_t b[1]; - /* Use b[] to access the size of the union, which is strictly not - * correct. Can't use fixed size unless there's feature detection - * for pointer byte size. - */ -} duk__ptr_union; - -/* - * Detach handling - */ - -#define DUK__SET_CONN_BROKEN(thr, reason) \ - do { \ - /* For now shared handler is fine. */ \ - duk__debug_do_detach1((thr)->heap, (reason)); \ - } while (0) - -DUK_LOCAL void duk__debug_do_detach1(duk_heap *heap, duk_int_t reason) { - /* Can be called multiple times with no harm. Mark the transport - * bad (dbg_read_cb == NULL) and clear state except for the detached - * callback and the udata field. The detached callback is delayed - * to the message loop so that it can be called between messages; - * this avoids corner cases related to immediate debugger reattach - * inside the detached callback. - */ - - if (heap->dbg_detaching) { - DUK_D(DUK_DPRINT("debugger already detaching, ignore detach1")); - return; - } - - DUK_D(DUK_DPRINT("debugger transport detaching, marking transport broken")); - - heap->dbg_detaching = 1; /* prevent multiple in-progress detaches */ - - if (heap->dbg_write_cb != NULL) { - duk_hthread *thr; - - thr = heap->heap_thread; - DUK_ASSERT(thr != NULL); - - duk_debug_write_notify(thr, DUK_DBG_CMD_DETACHING); - duk_debug_write_int(thr, reason); - duk_debug_write_eom(thr); - } - - heap->dbg_read_cb = NULL; - heap->dbg_write_cb = NULL; - heap->dbg_peek_cb = NULL; - heap->dbg_read_flush_cb = NULL; - heap->dbg_write_flush_cb = NULL; - heap->dbg_request_cb = NULL; - /* heap->dbg_detached_cb: keep */ - /* heap->dbg_udata: keep */ - /* heap->dbg_processing: keep on purpose to avoid debugger re-entry in detaching state */ - heap->dbg_state_dirty = 0; - heap->dbg_force_restart = 0; - heap->dbg_pause_flags = 0; - heap->dbg_pause_act = NULL; - heap->dbg_pause_startline = 0; - heap->dbg_have_next_byte = 0; - duk_debug_clear_paused(heap); /* XXX: some overlap with field inits above */ - heap->dbg_state_dirty = 0; /* XXX: clear_paused sets dirty; rework? */ - - /* Ensure there are no stale active breakpoint pointers. - * Breakpoint list is currently kept - we could empty it - * here but we'd need to handle refcounts correctly, and - * we'd need a 'thr' reference for that. - * - * XXX: clear breakpoint on either attach or detach? - */ - heap->dbg_breakpoints_active[0] = (duk_breakpoint *) NULL; -} - -DUK_LOCAL void duk__debug_do_detach2(duk_heap *heap) { - duk_debug_detached_function detached_cb; - void *detached_udata; - duk_hthread *thr; - - thr = heap->heap_thread; - if (thr == NULL) { - DUK_ASSERT(heap->dbg_detached_cb == NULL); - return; - } - - /* Safe to call multiple times. */ - - detached_cb = heap->dbg_detached_cb; - detached_udata = heap->dbg_udata; - heap->dbg_detached_cb = NULL; - heap->dbg_udata = NULL; - - if (detached_cb) { - /* Careful here: state must be wiped before the call - * so that we can cleanly handle a re-attach from - * inside the callback. - */ - DUK_D(DUK_DPRINT("detached during message loop, delayed call to detached_cb")); - detached_cb(thr, detached_udata); - } - - heap->dbg_detaching = 0; -} - -DUK_INTERNAL void duk_debug_do_detach(duk_heap *heap) { - duk__debug_do_detach1(heap, 0); - duk__debug_do_detach2(heap); -} - -/* Called on a read/write error: NULL all callbacks except the detached - * callback so that we never accidentally call them after a read/write - * error has been indicated. This is especially important for the transport - * I/O callbacks to fulfill guaranteed callback semantics. - */ -DUK_LOCAL void duk__debug_null_most_callbacks(duk_hthread *thr) { - duk_heap *heap; - - DUK_ASSERT(thr != NULL); - - heap = thr->heap; - DUK_D(DUK_DPRINT("transport read/write error, NULL all callbacks expected detached")); - heap->dbg_read_cb = NULL; - heap->dbg_write_cb = NULL; /* this is especially critical to avoid another write call in detach1() */ - heap->dbg_peek_cb = NULL; - heap->dbg_read_flush_cb = NULL; - heap->dbg_write_flush_cb = NULL; - heap->dbg_request_cb = NULL; - /* keep heap->dbg_detached_cb */ -} - -/* - * Pause handling - */ - -DUK_LOCAL void duk__debug_set_pause_state(duk_hthread *thr, duk_heap *heap, duk_small_uint_t pause_flags) { - duk_uint_fast32_t line; - - line = duk_debug_curr_line(thr); - if (line == 0) { - /* No line info for current function. */ - duk_small_uint_t updated_flags; - - updated_flags = pause_flags & ~(DUK_PAUSE_FLAG_LINE_CHANGE); - DUK_D(DUK_DPRINT("no line info for current activation, disable line-based pause flags: 0x%08lx -> 0x%08lx", - (long) pause_flags, - (long) updated_flags)); - pause_flags = updated_flags; - } - - heap->dbg_pause_flags = pause_flags; - heap->dbg_pause_act = thr->callstack_curr; - heap->dbg_pause_startline = (duk_uint32_t) line; - heap->dbg_state_dirty = 1; - - DUK_D(DUK_DPRINT("set state for automatic pause triggers, flags=0x%08lx, act=%p, startline=%ld", - (long) heap->dbg_pause_flags, - (void *) heap->dbg_pause_act, - (long) heap->dbg_pause_startline)); -} - -/* - * Debug connection peek and flush primitives - */ - -DUK_INTERNAL duk_bool_t duk_debug_read_peek(duk_hthread *thr) { - duk_heap *heap; - duk_bool_t ret; - - DUK_ASSERT(thr != NULL); - heap = thr->heap; - DUK_ASSERT(heap != NULL); - - if (heap->dbg_read_cb == NULL) { - DUK_D(DUK_DPRINT("attempt to peek in detached state, return zero (= no data)")); - return 0; - } - if (heap->dbg_peek_cb == NULL) { - DUK_DD(DUK_DDPRINT("no peek callback, return zero (= no data)")); - return 0; - } - - DUK__DBG_TPORT_ENTER(); - ret = (duk_bool_t) (heap->dbg_peek_cb(heap->dbg_udata) > 0); - DUK__DBG_TPORT_EXIT(); - return ret; -} - -DUK_INTERNAL void duk_debug_read_flush(duk_hthread *thr) { - duk_heap *heap; - - DUK_ASSERT(thr != NULL); - heap = thr->heap; - DUK_ASSERT(heap != NULL); - - if (heap->dbg_read_cb == NULL) { - DUK_D(DUK_DPRINT("attempt to read flush in detached state, ignore")); - return; - } - if (heap->dbg_read_flush_cb == NULL) { - DUK_DD(DUK_DDPRINT("no read flush callback, ignore")); - return; - } - - DUK__DBG_TPORT_ENTER(); - heap->dbg_read_flush_cb(heap->dbg_udata); - DUK__DBG_TPORT_EXIT(); -} - -DUK_INTERNAL void duk_debug_write_flush(duk_hthread *thr) { - duk_heap *heap; - - DUK_ASSERT(thr != NULL); - heap = thr->heap; - DUK_ASSERT(heap != NULL); - - if (heap->dbg_read_cb == NULL) { - DUK_D(DUK_DPRINT("attempt to write flush in detached state, ignore")); - return; - } - if (heap->dbg_write_flush_cb == NULL) { - DUK_DD(DUK_DDPRINT("no write flush callback, ignore")); - return; - } - - DUK__DBG_TPORT_ENTER(); - heap->dbg_write_flush_cb(heap->dbg_udata); - DUK__DBG_TPORT_EXIT(); -} - -/* - * Debug connection skip primitives - */ - -/* Skip fully. */ -DUK_INTERNAL void duk_debug_skip_bytes(duk_hthread *thr, duk_size_t length) { - duk_uint8_t dummy[64]; - duk_size_t now; - - DUK_ASSERT(thr != NULL); - - while (length > 0) { - now = (length > sizeof(dummy) ? sizeof(dummy) : length); - duk_debug_read_bytes(thr, dummy, now); - length -= now; - } -} - -DUK_INTERNAL void duk_debug_skip_byte(duk_hthread *thr) { - DUK_ASSERT(thr != NULL); - - (void) duk_debug_read_byte(thr); -} - -/* - * Debug connection read primitives - */ - -/* Peek ahead in the stream one byte. */ -DUK_INTERNAL uint8_t duk_debug_peek_byte(duk_hthread *thr) { - /* It is important not to call this if the last byte read was an EOM. - * Reading ahead in this scenario would cause unnecessary blocking if - * another message is not available. - */ - - duk_uint8_t x; - - x = duk_debug_read_byte(thr); - thr->heap->dbg_have_next_byte = 1; - thr->heap->dbg_next_byte = x; - return x; -} - -/* Read fully. */ -DUK_INTERNAL void duk_debug_read_bytes(duk_hthread *thr, duk_uint8_t *data, duk_size_t length) { - duk_heap *heap; - duk_uint8_t *p; - duk_size_t left; - duk_size_t got; - - DUK_ASSERT(thr != NULL); - heap = thr->heap; - DUK_ASSERT(heap != NULL); - DUK_ASSERT(data != NULL); - - if (heap->dbg_read_cb == NULL) { - DUK_D(DUK_DPRINT("attempt to read %ld bytes in detached state, return zero data", (long) length)); - goto fail; - } - - /* NOTE: length may be zero */ - p = data; - if (length >= 1 && heap->dbg_have_next_byte) { - heap->dbg_have_next_byte = 0; - *p++ = heap->dbg_next_byte; - } - for (;;) { - left = (duk_size_t) ((data + length) - p); - if (left == 0) { - break; - } - DUK_ASSERT(heap->dbg_read_cb != NULL); - DUK_ASSERT(left >= 1); -#if defined(DUK_USE_DEBUGGER_TRANSPORT_TORTURE) - left = 1; -#endif - DUK__DBG_TPORT_ENTER(); - got = heap->dbg_read_cb(heap->dbg_udata, (char *) p, left); - DUK__DBG_TPORT_EXIT(); - - if (got == 0 || got > left) { - DUK_D(DUK_DPRINT("connection error during read, return zero data")); - duk__debug_null_most_callbacks(thr); /* avoid calling write callback in detach1() */ - DUK__SET_CONN_BROKEN(thr, 1); - goto fail; - } - p += got; - } - return; - -fail: - duk_memzero((void *) data, (size_t) length); -} - -DUK_INTERNAL duk_uint8_t duk_debug_read_byte(duk_hthread *thr) { - duk_uint8_t x; - - x = 0; /* just in case callback is broken and won't write 'x' */ - duk_debug_read_bytes(thr, &x, 1); - return x; -} - -DUK_LOCAL duk_uint32_t duk__debug_read_uint32_raw(duk_hthread *thr) { - duk_uint8_t buf[4]; - - DUK_ASSERT(thr != NULL); - - duk_debug_read_bytes(thr, buf, 4); - return ((duk_uint32_t) buf[0] << 24) | ((duk_uint32_t) buf[1] << 16) | ((duk_uint32_t) buf[2] << 8) | (duk_uint32_t) buf[3]; -} - -DUK_LOCAL duk_int32_t duk__debug_read_int32_raw(duk_hthread *thr) { - return (duk_int32_t) duk__debug_read_uint32_raw(thr); -} - -DUK_LOCAL duk_uint16_t duk__debug_read_uint16_raw(duk_hthread *thr) { - duk_uint8_t buf[2]; - - DUK_ASSERT(thr != NULL); - - duk_debug_read_bytes(thr, buf, 2); - return ((duk_uint16_t) buf[0] << 8) | (duk_uint16_t) buf[1]; -} - -DUK_INTERNAL duk_int32_t duk_debug_read_int(duk_hthread *thr) { - duk_small_uint_t x; - duk_small_uint_t t; - - DUK_ASSERT(thr != NULL); - - x = duk_debug_read_byte(thr); - if (x >= 0xc0) { - t = duk_debug_read_byte(thr); - return (duk_int32_t) (((x - 0xc0) << 8) + t); - } else if (x >= 0x80) { - return (duk_int32_t) (x - 0x80); - } else if (x == DUK_DBG_IB_INT4) { - return (duk_int32_t) duk__debug_read_uint32_raw(thr); - } - - DUK_D(DUK_DPRINT("debug connection error: failed to decode int")); - DUK__SET_CONN_BROKEN(thr, 1); - return 0; -} - -DUK_LOCAL duk_hstring *duk__debug_read_hstring_raw(duk_hthread *thr, duk_uint32_t len) { - duk_uint8_t buf[31]; - duk_uint8_t *p; - - if (len <= sizeof(buf)) { - duk_debug_read_bytes(thr, buf, (duk_size_t) len); - duk_push_lstring(thr, (const char *) buf, (duk_size_t) len); - } else { - p = (duk_uint8_t *) duk_push_fixed_buffer(thr, (duk_size_t) len); /* zero for paranoia */ - DUK_ASSERT(p != NULL); - duk_debug_read_bytes(thr, p, (duk_size_t) len); - (void) duk_buffer_to_string(thr, -1); /* Safety relies on debug client, which is OK. */ - } - - return duk_require_hstring(thr, -1); -} - -DUK_INTERNAL duk_hstring *duk_debug_read_hstring(duk_hthread *thr) { - duk_small_uint_t x; - duk_uint32_t len; - - DUK_ASSERT(thr != NULL); - - x = duk_debug_read_byte(thr); - if (x >= 0x60 && x <= 0x7f) { - /* For short strings, use a fixed temp buffer. */ - len = (duk_uint32_t) (x - 0x60); - } else if (x == DUK_DBG_IB_STR2) { - len = (duk_uint32_t) duk__debug_read_uint16_raw(thr); - } else if (x == DUK_DBG_IB_STR4) { - len = (duk_uint32_t) duk__debug_read_uint32_raw(thr); - } else { - goto fail; - } - - return duk__debug_read_hstring_raw(thr, len); - -fail: - DUK_D(DUK_DPRINT("debug connection error: failed to decode int")); - DUK__SET_CONN_BROKEN(thr, 1); - duk_push_hstring_empty(thr); /* always push some string */ - return duk_require_hstring(thr, -1); -} - -DUK_LOCAL duk_hbuffer *duk__debug_read_hbuffer_raw(duk_hthread *thr, duk_uint32_t len) { - duk_uint8_t *p; - - p = (duk_uint8_t *) duk_push_fixed_buffer(thr, (duk_size_t) len); /* zero for paranoia */ - DUK_ASSERT(p != NULL); - duk_debug_read_bytes(thr, p, (duk_size_t) len); - - return duk_require_hbuffer(thr, -1); -} - -DUK_LOCAL void *duk__debug_read_pointer_raw(duk_hthread *thr) { - duk_small_uint_t x; - duk__ptr_union pu; - - DUK_ASSERT(thr != NULL); - - x = duk_debug_read_byte(thr); - if (x != sizeof(pu)) { - goto fail; - } - duk_debug_read_bytes(thr, (duk_uint8_t *) &pu.p, sizeof(pu)); -#if defined(DUK_USE_INTEGER_LE) - duk_byteswap_bytes((duk_uint8_t *) pu.b, sizeof(pu)); -#endif - return (void *) pu.p; - -fail: - DUK_D(DUK_DPRINT("debug connection error: failed to decode pointer")); - DUK__SET_CONN_BROKEN(thr, 1); - return (void *) NULL; -} - -DUK_LOCAL duk_double_t duk__debug_read_double_raw(duk_hthread *thr) { - duk_double_union du; - - DUK_ASSERT(sizeof(du.uc) == 8); - duk_debug_read_bytes(thr, (duk_uint8_t *) du.uc, sizeof(du.uc)); - DUK_DBLUNION_DOUBLE_NTOH(&du); - return du.d; -} - -#if 0 -DUK_INTERNAL duk_heaphdr *duk_debug_read_heapptr(duk_hthread *thr) { - duk_small_uint_t x; - - DUK_ASSERT(thr != NULL); - - x = duk_debug_read_byte(thr); - if (x != DUK_DBG_IB_HEAPPTR) { - goto fail; - } - - return (duk_heaphdr *) duk__debug_read_pointer_raw(thr); - - fail: - DUK_D(DUK_DPRINT("debug connection error: failed to decode heapptr")); - DUK__SET_CONN_BROKEN(thr, 1); - return NULL; -} -#endif - -DUK_INTERNAL duk_heaphdr *duk_debug_read_any_ptr(duk_hthread *thr) { - duk_small_uint_t x; - - DUK_ASSERT(thr != NULL); - - x = duk_debug_read_byte(thr); - switch (x) { - case DUK_DBG_IB_OBJECT: - case DUK_DBG_IB_POINTER: - case DUK_DBG_IB_HEAPPTR: - /* Accept any pointer-like value; for 'object' dvalue, read - * and ignore the class number. - */ - if (x == DUK_DBG_IB_OBJECT) { - duk_debug_skip_byte(thr); - } - break; - default: - goto fail; - } - - return (duk_heaphdr *) duk__debug_read_pointer_raw(thr); - -fail: - DUK_D(DUK_DPRINT("debug connection error: failed to decode any pointer (object, pointer, heapptr)")); - DUK__SET_CONN_BROKEN(thr, 1); - return NULL; -} - -DUK_INTERNAL duk_tval *duk_debug_read_tval(duk_hthread *thr) { - duk_uint8_t x; - duk_uint_t t; - duk_uint32_t len; - - DUK_ASSERT(thr != NULL); - - x = duk_debug_read_byte(thr); - - if (x >= 0xc0) { - t = (duk_uint_t) (x - 0xc0); - t = (t << 8) + duk_debug_read_byte(thr); - duk_push_uint(thr, (duk_uint_t) t); - goto return_ptr; - } - if (x >= 0x80) { - duk_push_uint(thr, (duk_uint_t) (x - 0x80)); - goto return_ptr; - } - if (x >= 0x60) { - len = (duk_uint32_t) (x - 0x60); - duk__debug_read_hstring_raw(thr, len); - goto return_ptr; - } - - switch (x) { - case DUK_DBG_IB_INT4: { - duk_int32_t i = duk__debug_read_int32_raw(thr); - duk_push_i32(thr, i); - break; - } - case DUK_DBG_IB_STR4: { - len = duk__debug_read_uint32_raw(thr); - duk__debug_read_hstring_raw(thr, len); - break; - } - case DUK_DBG_IB_STR2: { - len = duk__debug_read_uint16_raw(thr); - duk__debug_read_hstring_raw(thr, len); - break; - } - case DUK_DBG_IB_BUF4: { - len = duk__debug_read_uint32_raw(thr); - duk__debug_read_hbuffer_raw(thr, len); - break; - } - case DUK_DBG_IB_BUF2: { - len = duk__debug_read_uint16_raw(thr); - duk__debug_read_hbuffer_raw(thr, len); - break; - } - case DUK_DBG_IB_UNDEFINED: { - duk_push_undefined(thr); - break; - } - case DUK_DBG_IB_NULL: { - duk_push_null(thr); - break; - } - case DUK_DBG_IB_TRUE: { - duk_push_true(thr); - break; - } - case DUK_DBG_IB_FALSE: { - duk_push_false(thr); - break; - } - case DUK_DBG_IB_NUMBER: { - duk_double_t d; - d = duk__debug_read_double_raw(thr); - duk_push_number(thr, d); - break; - } - case DUK_DBG_IB_OBJECT: { - duk_heaphdr *h; - duk_debug_skip_byte(thr); - h = (duk_heaphdr *) duk__debug_read_pointer_raw(thr); - duk_push_heapptr(thr, (void *) h); - break; - } - case DUK_DBG_IB_POINTER: { - void *ptr; - ptr = duk__debug_read_pointer_raw(thr); - duk_push_pointer(thr, ptr); - break; - } - case DUK_DBG_IB_LIGHTFUNC: { - /* XXX: Not needed for now, so not implemented. Note that - * function pointers may have different size/layout than - * a void pointer. - */ - DUK_D(DUK_DPRINT("reading lightfunc values unimplemented")); - goto fail; - } - case DUK_DBG_IB_HEAPPTR: { - duk_heaphdr *h; - h = (duk_heaphdr *) duk__debug_read_pointer_raw(thr); - duk_push_heapptr(thr, (void *) h); - break; - } - case DUK_DBG_IB_UNUSED: /* unused: not accepted in inbound messages */ - default: - goto fail; - } - -return_ptr: - return DUK_GET_TVAL_NEGIDX(thr, -1); - -fail: - DUK_D(DUK_DPRINT("debug connection error: failed to decode tval")); - DUK__SET_CONN_BROKEN(thr, 1); - return NULL; -} - -/* - * Debug connection write primitives - */ - -/* Write fully. */ -DUK_INTERNAL void duk_debug_write_bytes(duk_hthread *thr, const duk_uint8_t *data, duk_size_t length) { - duk_heap *heap; - const duk_uint8_t *p; - duk_size_t left; - duk_size_t got; - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(length == 0 || data != NULL); - heap = thr->heap; - DUK_ASSERT(heap != NULL); - - if (heap->dbg_write_cb == NULL) { - DUK_D(DUK_DPRINT("attempt to write %ld bytes in detached state, ignore", (long) length)); - return; - } - if (length == 0) { - /* Avoid doing an actual write callback with length == 0, - * because that's reserved for a write flush. - */ - return; - } - DUK_ASSERT(data != NULL); - - p = data; - for (;;) { - left = (duk_size_t) ((data + length) - p); - if (left == 0) { - break; - } - DUK_ASSERT(heap->dbg_write_cb != NULL); - DUK_ASSERT(left >= 1); -#if defined(DUK_USE_DEBUGGER_TRANSPORT_TORTURE) - left = 1; -#endif - DUK__DBG_TPORT_ENTER(); - got = heap->dbg_write_cb(heap->dbg_udata, (const char *) p, left); - DUK__DBG_TPORT_EXIT(); - - if (got == 0 || got > left) { - duk__debug_null_most_callbacks(thr); /* avoid calling write callback in detach1() */ - DUK_D(DUK_DPRINT("connection error during write")); - DUK__SET_CONN_BROKEN(thr, 1); - return; - } - p += got; - } -} - -DUK_INTERNAL void duk_debug_write_byte(duk_hthread *thr, duk_uint8_t x) { - duk_debug_write_bytes(thr, (const duk_uint8_t *) &x, 1); -} - -DUK_INTERNAL void duk_debug_write_unused(duk_hthread *thr) { - duk_debug_write_byte(thr, DUK_DBG_IB_UNUSED); -} - -DUK_INTERNAL void duk_debug_write_undefined(duk_hthread *thr) { - duk_debug_write_byte(thr, DUK_DBG_IB_UNDEFINED); -} - -#if defined(DUK_USE_DEBUGGER_INSPECT) -DUK_INTERNAL void duk_debug_write_null(duk_hthread *thr) { - duk_debug_write_byte(thr, DUK_DBG_IB_NULL); -} -#endif - -DUK_INTERNAL void duk_debug_write_boolean(duk_hthread *thr, duk_uint_t val) { - duk_debug_write_byte(thr, val ? DUK_DBG_IB_TRUE : DUK_DBG_IB_FALSE); -} - -/* Write signed 32-bit integer. */ -DUK_INTERNAL void duk_debug_write_int(duk_hthread *thr, duk_int32_t x) { - duk_uint8_t buf[5]; - duk_size_t len; - - DUK_ASSERT(thr != NULL); - - if (x >= 0 && x <= 0x3fL) { - buf[0] = (duk_uint8_t) (0x80 + x); - len = 1; - } else if (x >= 0 && x <= 0x3fffL) { - buf[0] = (duk_uint8_t) (0xc0 + (x >> 8)); - buf[1] = (duk_uint8_t) (x & 0xff); - len = 2; - } else { - /* Signed integers always map to 4 bytes now. */ - buf[0] = (duk_uint8_t) DUK_DBG_IB_INT4; - buf[1] = (duk_uint8_t) ((x >> 24) & 0xff); - buf[2] = (duk_uint8_t) ((x >> 16) & 0xff); - buf[3] = (duk_uint8_t) ((x >> 8) & 0xff); - buf[4] = (duk_uint8_t) (x & 0xff); - len = 5; - } - duk_debug_write_bytes(thr, buf, len); -} - -/* Write unsigned 32-bit integer. */ -DUK_INTERNAL void duk_debug_write_uint(duk_hthread *thr, duk_uint32_t x) { - /* The debugger protocol doesn't support a plain integer encoding for - * the full 32-bit unsigned range (only 32-bit signed). For now, - * unsigned 32-bit values simply written as signed ones. This is not - * a concrete issue except for 32-bit heaphdr fields. Proper solutions - * would be to (a) write such integers as IEEE doubles or (b) add an - * unsigned 32-bit dvalue. - */ - if (x >= 0x80000000UL) { - DUK_D(DUK_DPRINT("writing unsigned integer 0x%08lx as signed integer", (long) x)); - } - duk_debug_write_int(thr, (duk_int32_t) x); -} - -DUK_INTERNAL void duk_debug_write_strbuf(duk_hthread *thr, const char *data, duk_size_t length, duk_uint8_t marker_base) { - duk_uint8_t buf[5]; - duk_size_t buflen; - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(length == 0 || data != NULL); - - if (length <= 0x1fUL && marker_base == DUK_DBG_IB_STR4) { - /* For strings, special form for short lengths. */ - buf[0] = (duk_uint8_t) (0x60 + length); - buflen = 1; - } else if (length <= 0xffffUL) { - buf[0] = (duk_uint8_t) (marker_base + 1); - buf[1] = (duk_uint8_t) (length >> 8); - buf[2] = (duk_uint8_t) (length & 0xff); - buflen = 3; - } else { - buf[0] = (duk_uint8_t) marker_base; - buf[1] = (duk_uint8_t) (length >> 24); - buf[2] = (duk_uint8_t) ((length >> 16) & 0xff); - buf[3] = (duk_uint8_t) ((length >> 8) & 0xff); - buf[4] = (duk_uint8_t) (length & 0xff); - buflen = 5; - } - - duk_debug_write_bytes(thr, (const duk_uint8_t *) buf, buflen); - duk_debug_write_bytes(thr, (const duk_uint8_t *) data, length); -} - -DUK_INTERNAL void duk_debug_write_string(duk_hthread *thr, const char *data, duk_size_t length) { - duk_debug_write_strbuf(thr, data, length, DUK_DBG_IB_STR4); -} - -DUK_INTERNAL void duk_debug_write_cstring(duk_hthread *thr, const char *data) { - DUK_ASSERT(thr != NULL); - - duk_debug_write_string(thr, data, data ? DUK_STRLEN(data) : 0); -} - -DUK_INTERNAL void duk_debug_write_hstring(duk_hthread *thr, duk_hstring *h) { - DUK_ASSERT(thr != NULL); - - /* XXX: differentiate null pointer from empty string? */ - duk_debug_write_string(thr, - (h != NULL ? (const char *) DUK_HSTRING_GET_DATA(h) : NULL), - (h != NULL ? (duk_size_t) DUK_HSTRING_GET_BYTELEN(h) : 0)); -} - -DUK_LOCAL void duk__debug_write_hstring_safe_top(duk_hthread *thr) { - duk_debug_write_hstring(thr, duk_safe_to_hstring(thr, -1)); -} - -DUK_INTERNAL void duk_debug_write_buffer(duk_hthread *thr, const char *data, duk_size_t length) { - duk_debug_write_strbuf(thr, data, length, DUK_DBG_IB_BUF4); -} - -DUK_INTERNAL void duk_debug_write_hbuffer(duk_hthread *thr, duk_hbuffer *h) { - DUK_ASSERT(thr != NULL); - - duk_debug_write_buffer(thr, - (h != NULL ? (const char *) DUK_HBUFFER_GET_DATA_PTR(thr->heap, h) : NULL), - (h != NULL ? (duk_size_t) DUK_HBUFFER_GET_SIZE(h) : 0)); -} - -DUK_LOCAL void duk__debug_write_pointer_raw(duk_hthread *thr, void *ptr, duk_uint8_t ibyte) { - duk_uint8_t buf[2]; - duk__ptr_union pu; - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(sizeof(ptr) >= 1 && sizeof(ptr) <= 16); - /* ptr may be NULL */ - - buf[0] = ibyte; - buf[1] = sizeof(pu); - duk_debug_write_bytes(thr, buf, 2); - pu.p = (void *) ptr; -#if defined(DUK_USE_INTEGER_LE) - duk_byteswap_bytes((duk_uint8_t *) pu.b, sizeof(pu)); -#endif - duk_debug_write_bytes(thr, (const duk_uint8_t *) &pu.p, (duk_size_t) sizeof(pu)); -} - -DUK_INTERNAL void duk_debug_write_pointer(duk_hthread *thr, void *ptr) { - duk__debug_write_pointer_raw(thr, ptr, DUK_DBG_IB_POINTER); -} - -#if defined(DUK_USE_DEBUGGER_DUMPHEAP) || defined(DUK_USE_DEBUGGER_INSPECT) -DUK_INTERNAL void duk_debug_write_heapptr(duk_hthread *thr, duk_heaphdr *h) { - duk__debug_write_pointer_raw(thr, (void *) h, DUK_DBG_IB_HEAPPTR); -} -#endif /* DUK_USE_DEBUGGER_DUMPHEAP || DUK_USE_DEBUGGER_INSPECT */ - -DUK_INTERNAL void duk_debug_write_hobject(duk_hthread *thr, duk_hobject *obj) { - duk_uint8_t buf[3]; - duk__ptr_union pu; - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(sizeof(obj) >= 1 && sizeof(obj) <= 16); - DUK_ASSERT(obj != NULL); - - buf[0] = DUK_DBG_IB_OBJECT; - buf[1] = (duk_uint8_t) DUK_HOBJECT_GET_CLASS_NUMBER(obj); - buf[2] = sizeof(pu); - duk_debug_write_bytes(thr, buf, 3); - pu.p = (void *) obj; -#if defined(DUK_USE_INTEGER_LE) - duk_byteswap_bytes((duk_uint8_t *) pu.b, sizeof(pu)); -#endif - duk_debug_write_bytes(thr, (const duk_uint8_t *) &pu.p, (duk_size_t) sizeof(pu)); -} - -DUK_INTERNAL void duk_debug_write_tval(duk_hthread *thr, duk_tval *tv) { - duk_c_function lf_func; - duk_small_uint_t lf_flags; - duk_uint8_t buf[4]; - duk_double_union du1; - duk_double_union du2; - duk_int32_t i32; - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(tv != NULL); - - switch (DUK_TVAL_GET_TAG(tv)) { - case DUK_TAG_UNDEFINED: - duk_debug_write_byte(thr, DUK_DBG_IB_UNDEFINED); - break; - case DUK_TAG_UNUSED: - duk_debug_write_byte(thr, DUK_DBG_IB_UNUSED); - break; - case DUK_TAG_NULL: - duk_debug_write_byte(thr, DUK_DBG_IB_NULL); - break; - case DUK_TAG_BOOLEAN: - DUK_ASSERT(DUK_TVAL_GET_BOOLEAN(tv) == 0 || DUK_TVAL_GET_BOOLEAN(tv) == 1); - duk_debug_write_boolean(thr, DUK_TVAL_GET_BOOLEAN(tv)); - break; - case DUK_TAG_POINTER: - duk_debug_write_pointer(thr, (void *) DUK_TVAL_GET_POINTER(tv)); - break; - case DUK_TAG_LIGHTFUNC: - DUK_TVAL_GET_LIGHTFUNC(tv, lf_func, lf_flags); - buf[0] = DUK_DBG_IB_LIGHTFUNC; - buf[1] = (duk_uint8_t) (lf_flags >> 8); - buf[2] = (duk_uint8_t) (lf_flags & 0xff); - buf[3] = sizeof(lf_func); - duk_debug_write_bytes(thr, buf, 4); - duk_debug_write_bytes(thr, (const duk_uint8_t *) &lf_func, sizeof(lf_func)); - break; - case DUK_TAG_STRING: - duk_debug_write_hstring(thr, DUK_TVAL_GET_STRING(tv)); - break; - case DUK_TAG_OBJECT: - duk_debug_write_hobject(thr, DUK_TVAL_GET_OBJECT(tv)); - break; - case DUK_TAG_BUFFER: - duk_debug_write_hbuffer(thr, DUK_TVAL_GET_BUFFER(tv)); - break; -#if defined(DUK_USE_FASTINT) - case DUK_TAG_FASTINT: -#endif - default: - /* Numbers are normalized to big (network) endian. We can - * (but are not required) to use integer dvalues when there's - * no loss of precision. - * - * XXX: share check with other code; this check is slow but - * reliable and doesn't require careful exponent/mantissa - * mask tricks as in the fastint downgrade code. - */ - DUK_ASSERT(!DUK_TVAL_IS_UNUSED(tv)); - DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv)); - du1.d = DUK_TVAL_GET_NUMBER(tv); - i32 = (duk_int32_t) du1.d; - du2.d = (duk_double_t) i32; - - DUK_DD(DUK_DDPRINT("i32=%ld du1=%02x%02x%02x%02x%02x%02x%02x%02x " - "du2=%02x%02x%02x%02x%02x%02x%02x%02x", - (long) i32, - (unsigned int) du1.uc[0], - (unsigned int) du1.uc[1], - (unsigned int) du1.uc[2], - (unsigned int) du1.uc[3], - (unsigned int) du1.uc[4], - (unsigned int) du1.uc[5], - (unsigned int) du1.uc[6], - (unsigned int) du1.uc[7], - (unsigned int) du2.uc[0], - (unsigned int) du2.uc[1], - (unsigned int) du2.uc[2], - (unsigned int) du2.uc[3], - (unsigned int) du2.uc[4], - (unsigned int) du2.uc[5], - (unsigned int) du2.uc[6], - (unsigned int) du2.uc[7])); - - if (duk_memcmp((const void *) du1.uc, (const void *) du2.uc, sizeof(du1.uc)) == 0) { - duk_debug_write_int(thr, i32); - } else { - DUK_DBLUNION_DOUBLE_HTON(&du1); - duk_debug_write_byte(thr, DUK_DBG_IB_NUMBER); - duk_debug_write_bytes(thr, (const duk_uint8_t *) du1.uc, sizeof(du1.uc)); - } - } -} - -#if defined(DUK_USE_DEBUGGER_DUMPHEAP) -/* Variant for writing duk_tvals so that any heap allocated values are - * written out as tagged heap pointers. - */ -DUK_LOCAL void duk__debug_write_tval_heapptr(duk_hthread *thr, duk_tval *tv) { - if (DUK_TVAL_IS_HEAP_ALLOCATED(tv)) { - duk_heaphdr *h = DUK_TVAL_GET_HEAPHDR(tv); - duk_debug_write_heapptr(thr, h); - } else { - duk_debug_write_tval(thr, tv); - } -} -#endif /* DUK_USE_DEBUGGER_DUMPHEAP */ - -/* - * Debug connection message write helpers - */ - -#if 0 /* unused */ -DUK_INTERNAL void duk_debug_write_request(duk_hthread *thr, duk_small_uint_t command) { - duk_debug_write_byte(thr, DUK_DBG_IB_REQUEST); - duk_debug_write_int(thr, command); -} -#endif - -DUK_INTERNAL void duk_debug_write_reply(duk_hthread *thr) { - duk_debug_write_byte(thr, DUK_DBG_IB_REPLY); -} - -DUK_INTERNAL void duk_debug_write_error_eom(duk_hthread *thr, duk_small_uint_t err_code, const char *msg) { - /* Allow NULL 'msg' */ - duk_debug_write_byte(thr, DUK_DBG_IB_ERROR); - duk_debug_write_int(thr, (duk_int32_t) err_code); - duk_debug_write_cstring(thr, msg); - duk_debug_write_eom(thr); -} - -DUK_INTERNAL void duk_debug_write_notify(duk_hthread *thr, duk_small_uint_t command) { - duk_debug_write_byte(thr, DUK_DBG_IB_NOTIFY); - duk_debug_write_int(thr, (duk_int32_t) command); -} - -DUK_INTERNAL void duk_debug_write_eom(duk_hthread *thr) { - duk_debug_write_byte(thr, DUK_DBG_IB_EOM); - - /* As an initial implementation, write flush after every EOM (and the - * version identifier). A better implementation would flush only when - * Duktape is finished processing messages so that a flush only happens - * after all outbound messages are finished on that occasion. - */ - duk_debug_write_flush(thr); -} - -/* - * Status message and helpers - */ - -DUK_INTERNAL duk_uint_fast32_t duk_debug_curr_line(duk_hthread *thr) { - duk_activation *act; - duk_uint_fast32_t line; - duk_uint_fast32_t pc; - - act = thr->callstack_curr; - if (act == NULL) { - return 0; - } - - /* We're conceptually between two opcodes; act->pc indicates the next - * instruction to be executed. This is usually the correct pc/line to - * indicate in Status. (For the 'debugger' statement this now reports - * the pc/line after the debugger statement because the debugger opcode - * has already been executed.) - */ - - pc = duk_hthread_get_act_curr_pc(thr, act); - - /* XXX: this should be optimized to be a raw query and avoid valstack - * operations if possible. - */ - duk_push_tval(thr, &act->tv_func); - line = duk_hobject_pc2line_query(thr, -1, pc); - duk_pop(thr); - return line; -} - -DUK_INTERNAL void duk_debug_send_status(duk_hthread *thr) { - duk_activation *act; - - duk_debug_write_notify(thr, DUK_DBG_CMD_STATUS); - duk_debug_write_int(thr, (DUK_HEAP_HAS_DEBUGGER_PAUSED(thr->heap) ? 1 : 0)); - - act = thr->callstack_curr; - if (act == NULL) { - duk_debug_write_undefined(thr); - duk_debug_write_undefined(thr); - duk_debug_write_int(thr, 0); - duk_debug_write_int(thr, 0); - } else { - duk_push_tval(thr, &act->tv_func); - duk_get_prop_literal(thr, -1, "fileName"); - duk__debug_write_hstring_safe_top(thr); - duk_get_prop_literal(thr, -2, "name"); - duk__debug_write_hstring_safe_top(thr); - duk_pop_3(thr); - /* Report next pc/line to be executed. */ - duk_debug_write_uint(thr, (duk_uint32_t) duk_debug_curr_line(thr)); - duk_debug_write_uint(thr, (duk_uint32_t) duk_hthread_get_act_curr_pc(thr, act)); - } - - duk_debug_write_eom(thr); -} - -#if defined(DUK_USE_DEBUGGER_THROW_NOTIFY) -DUK_INTERNAL void duk_debug_send_throw(duk_hthread *thr, duk_bool_t fatal) { - /* - * NFY EOM - */ - - duk_activation *act; - duk_uint32_t pc; - - DUK_ASSERT(thr->valstack_top > thr->valstack); /* At least: ... [err] */ - - duk_debug_write_notify(thr, DUK_DBG_CMD_THROW); - duk_debug_write_int(thr, (duk_int32_t) fatal); - - /* Report thrown value to client coerced to string */ - duk_dup_top(thr); - duk__debug_write_hstring_safe_top(thr); - duk_pop(thr); - - if (duk_is_error(thr, -1)) { - /* Error instance, use augmented error data directly */ - duk_get_prop_stridx_short(thr, -1, DUK_STRIDX_FILE_NAME); - duk__debug_write_hstring_safe_top(thr); - duk_get_prop_stridx_short(thr, -2, DUK_STRIDX_LINE_NUMBER); - duk_debug_write_uint(thr, duk_get_uint(thr, -1)); - duk_pop_2(thr); - } else { - /* For anything other than an Error instance, we calculate the - * error location directly from the current activation if one - * exists. - */ - act = thr->callstack_curr; - if (act != NULL) { - duk_push_tval(thr, &act->tv_func); - duk_get_prop_literal(thr, -1, "fileName"); - duk__debug_write_hstring_safe_top(thr); - pc = (duk_uint32_t) duk_hthread_get_act_prev_pc(thr, act); - duk_debug_write_uint(thr, (duk_uint32_t) duk_hobject_pc2line_query(thr, -2, pc)); - duk_pop_2(thr); - } else { - /* Can happen if duk_throw() is called on an empty - * callstack. - */ - duk_debug_write_cstring(thr, ""); - duk_debug_write_uint(thr, 0); - } - } - - duk_debug_write_eom(thr); -} -#endif /* DUK_USE_DEBUGGER_THROW_NOTIFY */ - -/* - * Debug message processing - */ - -/* Skip dvalue. */ -DUK_LOCAL duk_bool_t duk__debug_skip_dvalue(duk_hthread *thr) { - duk_uint8_t x; - duk_uint32_t len; - - x = duk_debug_read_byte(thr); - - if (x >= 0xc0) { - duk_debug_skip_byte(thr); - return 0; - } - if (x >= 0x80) { - return 0; - } - if (x >= 0x60) { - duk_debug_skip_bytes(thr, (duk_size_t) (x - 0x60)); - return 0; - } - switch (x) { - case DUK_DBG_IB_EOM: - return 1; /* Return 1: got EOM */ - case DUK_DBG_IB_REQUEST: - case DUK_DBG_IB_REPLY: - case DUK_DBG_IB_ERROR: - case DUK_DBG_IB_NOTIFY: - break; - case DUK_DBG_IB_INT4: - (void) duk__debug_read_uint32_raw(thr); - break; - case DUK_DBG_IB_STR4: - case DUK_DBG_IB_BUF4: - len = duk__debug_read_uint32_raw(thr); - duk_debug_skip_bytes(thr, len); - break; - case DUK_DBG_IB_STR2: - case DUK_DBG_IB_BUF2: - len = duk__debug_read_uint16_raw(thr); - duk_debug_skip_bytes(thr, len); - break; - case DUK_DBG_IB_UNUSED: - case DUK_DBG_IB_UNDEFINED: - case DUK_DBG_IB_NULL: - case DUK_DBG_IB_TRUE: - case DUK_DBG_IB_FALSE: - break; - case DUK_DBG_IB_NUMBER: - duk_debug_skip_bytes(thr, 8); - break; - case DUK_DBG_IB_OBJECT: - duk_debug_skip_byte(thr); - len = duk_debug_read_byte(thr); - duk_debug_skip_bytes(thr, len); - break; - case DUK_DBG_IB_POINTER: - case DUK_DBG_IB_HEAPPTR: - len = duk_debug_read_byte(thr); - duk_debug_skip_bytes(thr, len); - break; - case DUK_DBG_IB_LIGHTFUNC: - duk_debug_skip_bytes(thr, 2); - len = duk_debug_read_byte(thr); - duk_debug_skip_bytes(thr, len); - break; - default: - goto fail; - } - - return 0; - -fail: - DUK__SET_CONN_BROKEN(thr, 1); - return 1; /* Pretend like we got EOM */ -} - -/* Skip dvalues to EOM. */ -DUK_LOCAL void duk__debug_skip_to_eom(duk_hthread *thr) { - for (;;) { - if (duk__debug_skip_dvalue(thr)) { - break; - } - } -} - -/* Read and validate a call stack index. If index is invalid, write out an - * error message and return zero. - */ -DUK_LOCAL duk_int32_t duk__debug_read_validate_csindex(duk_hthread *thr) { - duk_int32_t level; - level = duk_debug_read_int(thr); - if (level >= 0 || -level > (duk_int32_t) thr->callstack_top) { - duk_debug_write_error_eom(thr, DUK_DBG_ERR_NOTFOUND, "invalid callstack index"); - return 0; /* zero indicates failure */ - } - return level; -} - -/* Read a call stack index and lookup the corresponding duk_activation. - * If index is invalid, write out an error message and return NULL. - */ -DUK_LOCAL duk_activation *duk__debug_read_level_get_activation(duk_hthread *thr) { - duk_activation *act; - duk_int32_t level; - - level = duk_debug_read_int(thr); - act = duk_hthread_get_activation_for_level(thr, level); - if (act == NULL) { - duk_debug_write_error_eom(thr, DUK_DBG_ERR_NOTFOUND, "invalid callstack index"); - } - return act; -} - -/* - * Simple commands - */ - -DUK_LOCAL void duk__debug_handle_basic_info(duk_hthread *thr, duk_heap *heap) { - DUK_UNREF(heap); - DUK_D(DUK_DPRINT("debug command Version")); - - duk_debug_write_reply(thr); - duk_debug_write_int(thr, DUK_VERSION); - duk_debug_write_cstring(thr, DUK_GIT_DESCRIBE); - duk_debug_write_cstring(thr, DUK_USE_TARGET_INFO); -#if defined(DUK_USE_DOUBLE_LE) - duk_debug_write_int(thr, 1); -#elif defined(DUK_USE_DOUBLE_ME) - duk_debug_write_int(thr, 2); -#elif defined(DUK_USE_DOUBLE_BE) - duk_debug_write_int(thr, 3); -#else - duk_debug_write_int(thr, 0); -#endif - duk_debug_write_int(thr, (duk_int_t) sizeof(void *)); - duk_debug_write_eom(thr); -} - -DUK_LOCAL void duk__debug_handle_trigger_status(duk_hthread *thr, duk_heap *heap) { - DUK_UNREF(heap); - DUK_D(DUK_DPRINT("debug command TriggerStatus")); - - duk_debug_write_reply(thr); - duk_debug_write_eom(thr); - heap->dbg_state_dirty = 1; -} - -DUK_LOCAL void duk__debug_handle_pause(duk_hthread *thr, duk_heap *heap) { - DUK_D(DUK_DPRINT("debug command Pause")); - duk_debug_set_paused(heap); - duk_debug_write_reply(thr); - duk_debug_write_eom(thr); -} - -DUK_LOCAL void duk__debug_handle_resume(duk_hthread *thr, duk_heap *heap) { - duk_small_uint_t pause_flags; - - DUK_D(DUK_DPRINT("debug command Resume")); - - duk_debug_clear_paused(heap); - - pause_flags = 0; -#if 0 /* manual testing */ - pause_flags |= DUK_PAUSE_FLAG_ONE_OPCODE; - pause_flags |= DUK_PAUSE_FLAG_CAUGHT_ERROR; - pause_flags |= DUK_PAUSE_FLAG_UNCAUGHT_ERROR; -#endif -#if defined(DUK_USE_DEBUGGER_PAUSE_UNCAUGHT) - pause_flags |= DUK_PAUSE_FLAG_UNCAUGHT_ERROR; -#endif - - duk__debug_set_pause_state(thr, heap, pause_flags); - - duk_debug_write_reply(thr); - duk_debug_write_eom(thr); -} - -DUK_LOCAL void duk__debug_handle_step(duk_hthread *thr, duk_heap *heap, duk_int32_t cmd) { - duk_small_uint_t pause_flags; - - DUK_D(DUK_DPRINT("debug command StepInto/StepOver/StepOut: %d", (int) cmd)); - - if (cmd == DUK_DBG_CMD_STEPINTO) { - pause_flags = DUK_PAUSE_FLAG_LINE_CHANGE | DUK_PAUSE_FLAG_FUNC_ENTRY | DUK_PAUSE_FLAG_FUNC_EXIT; - } else if (cmd == DUK_DBG_CMD_STEPOVER) { - pause_flags = DUK_PAUSE_FLAG_LINE_CHANGE | DUK_PAUSE_FLAG_FUNC_EXIT; - } else { - DUK_ASSERT(cmd == DUK_DBG_CMD_STEPOUT); - pause_flags = DUK_PAUSE_FLAG_FUNC_EXIT; - } -#if defined(DUK_USE_DEBUGGER_PAUSE_UNCAUGHT) - pause_flags |= DUK_PAUSE_FLAG_UNCAUGHT_ERROR; -#endif - - /* If current activation doesn't have line information, line-based - * pause flags are automatically disabled. As a result, e.g. - * StepInto will then pause on (native) function entry or exit. - */ - duk_debug_clear_paused(heap); - duk__debug_set_pause_state(thr, heap, pause_flags); - - duk_debug_write_reply(thr); - duk_debug_write_eom(thr); -} - -DUK_LOCAL void duk__debug_handle_list_break(duk_hthread *thr, duk_heap *heap) { - duk_small_int_t i; - - DUK_D(DUK_DPRINT("debug command ListBreak")); - duk_debug_write_reply(thr); - for (i = 0; i < (duk_small_int_t) heap->dbg_breakpoint_count; i++) { - duk_debug_write_hstring(thr, heap->dbg_breakpoints[i].filename); - duk_debug_write_uint(thr, (duk_uint32_t) heap->dbg_breakpoints[i].line); - } - duk_debug_write_eom(thr); -} - -DUK_LOCAL void duk__debug_handle_add_break(duk_hthread *thr, duk_heap *heap) { - duk_hstring *filename; - duk_uint32_t linenumber; - duk_small_int_t idx; - - DUK_UNREF(heap); - - filename = duk_debug_read_hstring(thr); - linenumber = (duk_uint32_t) duk_debug_read_int(thr); - DUK_D(DUK_DPRINT("debug command AddBreak: %!O:%ld", (duk_hobject *) filename, (long) linenumber)); - idx = duk_debug_add_breakpoint(thr, filename, linenumber); - if (idx >= 0) { - duk_debug_write_reply(thr); - duk_debug_write_int(thr, (duk_int32_t) idx); - duk_debug_write_eom(thr); - } else { - duk_debug_write_error_eom(thr, DUK_DBG_ERR_TOOMANY, "no space for breakpoint"); - } -} - -DUK_LOCAL void duk__debug_handle_del_break(duk_hthread *thr, duk_heap *heap) { - duk_small_uint_t idx; - - DUK_UNREF(heap); - - DUK_D(DUK_DPRINT("debug command DelBreak")); - idx = (duk_small_uint_t) duk_debug_read_int(thr); - if (duk_debug_remove_breakpoint(thr, idx)) { - duk_debug_write_reply(thr); - duk_debug_write_eom(thr); - } else { - duk_debug_write_error_eom(thr, DUK_DBG_ERR_NOTFOUND, "invalid breakpoint index"); - } -} - -DUK_LOCAL void duk__debug_handle_get_var(duk_hthread *thr, duk_heap *heap) { - duk_activation *act; - duk_hstring *str; - duk_bool_t rc; - - DUK_UNREF(heap); - DUK_D(DUK_DPRINT("debug command GetVar")); - - act = duk__debug_read_level_get_activation(thr); - if (act == NULL) { - return; - } - str = duk_debug_read_hstring(thr); /* push to stack */ - DUK_ASSERT(str != NULL); - - rc = duk_js_getvar_activation(thr, act, str, 0); - - duk_debug_write_reply(thr); - if (rc) { - duk_debug_write_int(thr, 1); - DUK_ASSERT(duk_get_tval(thr, -2) != NULL); - duk_debug_write_tval(thr, duk_get_tval(thr, -2)); - } else { - duk_debug_write_int(thr, 0); - duk_debug_write_unused(thr); - } - duk_debug_write_eom(thr); -} - -DUK_LOCAL void duk__debug_handle_put_var(duk_hthread *thr, duk_heap *heap) { - duk_activation *act; - duk_hstring *str; - duk_tval *tv; - - DUK_UNREF(heap); - DUK_D(DUK_DPRINT("debug command PutVar")); - - act = duk__debug_read_level_get_activation(thr); - if (act == NULL) { - return; - } - str = duk_debug_read_hstring(thr); /* push to stack */ - DUK_ASSERT(str != NULL); - tv = duk_debug_read_tval(thr); - if (tv == NULL) { - /* detached */ - return; - } - - duk_js_putvar_activation(thr, act, str, tv, 0); - - /* XXX: Current putvar implementation doesn't have a success flag, - * add one and send to debug client? - */ - duk_debug_write_reply(thr); - duk_debug_write_eom(thr); -} - -DUK_LOCAL void duk__debug_handle_get_call_stack(duk_hthread *thr, duk_heap *heap) { - duk_hthread *curr_thr = thr; - duk_activation *curr_act; - duk_uint_fast32_t pc; - duk_uint_fast32_t line; - - DUK_ASSERT(thr != NULL); - DUK_UNREF(heap); - - duk_debug_write_reply(thr); - while (curr_thr != NULL) { - for (curr_act = curr_thr->callstack_curr; curr_act != NULL; curr_act = curr_act->parent) { - /* PC/line semantics here are: - * - For callstack top we're conceptually between two - * opcodes and current PC indicates next line to - * execute, so report that (matches Status). - * - For other activations we're conceptually still - * executing the instruction at PC-1, so report that - * (matches error stacktrace behavior). - * - See: https://github.com/svaarala/duktape/issues/281 - */ - - /* XXX: optimize to use direct reads, i.e. avoid - * value stack operations. - */ - duk_push_tval(thr, &curr_act->tv_func); - duk_get_prop_stridx_short(thr, -1, DUK_STRIDX_FILE_NAME); - duk__debug_write_hstring_safe_top(thr); - duk_get_prop_stridx_short(thr, -2, DUK_STRIDX_NAME); - duk__debug_write_hstring_safe_top(thr); - pc = duk_hthread_get_act_curr_pc(thr, curr_act); - if (curr_act != curr_thr->callstack_curr && pc > 0) { - pc--; - } - line = duk_hobject_pc2line_query(thr, -3, pc); - duk_debug_write_uint(thr, (duk_uint32_t) line); - duk_debug_write_uint(thr, (duk_uint32_t) pc); - duk_pop_3(thr); - } - curr_thr = curr_thr->resumer; - } - /* SCANBUILD: warning about 'thr' potentially being NULL here, - * warning is incorrect because thr != NULL always here. - */ - duk_debug_write_eom(thr); -} - -DUK_LOCAL void duk__debug_handle_get_locals(duk_hthread *thr, duk_heap *heap) { - duk_activation *act; - duk_hstring *varname; - - DUK_UNREF(heap); - - act = duk__debug_read_level_get_activation(thr); - if (act == NULL) { - return; - } - - duk_debug_write_reply(thr); - - /* XXX: several nice-to-have improvements here: - * - Use direct reads avoiding value stack operations - * - Avoid triggering getters, indicate getter values to debug client - * - If side effects are possible, add error catching - */ - - if (DUK_TVAL_IS_OBJECT(&act->tv_func)) { - duk_hobject *h_func = DUK_TVAL_GET_OBJECT(&act->tv_func); - duk_hobject *h_varmap; - - h_varmap = duk_hobject_get_varmap(thr, h_func); - if (h_varmap != NULL) { - duk_push_hobject(thr, h_varmap); - duk_enum(thr, -1, 0 /*enum_flags*/); - while (duk_next(thr, -1 /*enum_index*/, 0 /*get_value*/)) { - varname = duk_known_hstring(thr, -1); - - duk_js_getvar_activation(thr, act, varname, 0 /*throw_flag*/); - /* [ ... func varmap enum key value this ] */ - duk_debug_write_hstring(thr, duk_get_hstring(thr, -3)); - duk_debug_write_tval(thr, duk_get_tval(thr, -2)); - duk_pop_3(thr); /* -> [ ... func varmap enum ] */ - } - } else { - DUK_D(DUK_DPRINT("varmap missing in GetLocals, ignore")); - } - } else { - DUK_D(DUK_DPRINT("varmap is not an object in GetLocals, ignore")); - } - - duk_debug_write_eom(thr); -} - -DUK_LOCAL void duk__debug_handle_eval(duk_hthread *thr, duk_heap *heap) { - duk_small_uint_t call_flags; - duk_int_t call_ret; - duk_small_int_t eval_err; - duk_bool_t direct_eval; - duk_int32_t level; - duk_idx_t idx_func; - - DUK_UNREF(heap); - - DUK_D(DUK_DPRINT("debug command Eval")); - - /* The eval code is executed within the lexical environment of a specified - * activation. For now, use global object eval() function, with the eval - * considered a 'direct call to eval'. - * - * Callstack index for debug commands only affects scope -- the callstack - * as seen by, e.g. Duktape.act() will be the same regardless. - */ - - /* nargs == 2 so we can pass a callstack index to eval(). */ - idx_func = duk_get_top(thr); - duk_push_c_function(thr, duk_bi_global_object_eval, 2 /*nargs*/); - duk_push_undefined(thr); /* 'this' binding shouldn't matter here */ - - /* Read callstack index, if non-null. */ - if (duk_debug_peek_byte(thr) == DUK_DBG_IB_NULL) { - direct_eval = 0; - level = -1; /* Not needed, but silences warning. */ - (void) duk_debug_read_byte(thr); - } else { - direct_eval = 1; - level = duk__debug_read_validate_csindex(thr); - if (level == 0) { - return; - } - } - - DUK_ASSERT(!direct_eval || (level < 0 && -level <= (duk_int32_t) thr->callstack_top)); - - (void) duk_debug_read_hstring(thr); - if (direct_eval) { - duk_push_int(thr, level - 1); /* compensate for eval() call */ - } - - /* [ ... eval "eval" eval_input level? ] */ - - call_flags = 0; - if (direct_eval) { - duk_activation *act; - duk_hobject *fun; - - act = duk_hthread_get_activation_for_level(thr, level); - if (act != NULL) { - fun = DUK_ACT_GET_FUNC(act); - if (fun != NULL && DUK_HOBJECT_IS_COMPFUNC(fun)) { - /* Direct eval requires that there's a current - * activation and it is an ECMAScript function. - * When Eval is executed from e.g. cooperate API - * call we'll need to do an indirect eval instead. - */ - call_flags |= DUK_CALL_FLAG_DIRECT_EVAL; - } - } - } - - call_ret = duk_pcall_method_flags(thr, duk_get_top(thr) - (idx_func + 2), call_flags); - - if (call_ret == DUK_EXEC_SUCCESS) { - eval_err = 0; - /* Use result value as is. */ - } else { - /* For errors a string coerced result is most informative - * right now, as the debug client doesn't have the capability - * to traverse the error object. - */ - eval_err = 1; - duk_safe_to_string(thr, -1); - } - - /* [ ... result ] */ - - duk_debug_write_reply(thr); - duk_debug_write_int(thr, (duk_int32_t) eval_err); - DUK_ASSERT(duk_get_tval(thr, -1) != NULL); - duk_debug_write_tval(thr, duk_get_tval(thr, -1)); - duk_debug_write_eom(thr); -} - -DUK_LOCAL void duk__debug_handle_detach(duk_hthread *thr, duk_heap *heap) { - DUK_UNREF(heap); - DUK_D(DUK_DPRINT("debug command Detach")); - - duk_debug_write_reply(thr); - duk_debug_write_eom(thr); - - DUK_D(DUK_DPRINT("debug connection detached, mark broken")); - DUK__SET_CONN_BROKEN(thr, 0); /* not an error */ -} - -DUK_LOCAL void duk__debug_handle_apprequest(duk_hthread *thr, duk_heap *heap) { - duk_idx_t old_top; - - DUK_D(DUK_DPRINT("debug command AppRequest")); - - old_top = duk_get_top(thr); /* save stack top */ - - if (heap->dbg_request_cb != NULL) { - duk_idx_t nrets; - duk_idx_t nvalues = 0; - duk_idx_t top, idx; - - /* Read tvals from the message and push them onto the valstack, - * then call the request callback to process the request. - */ - while (duk_debug_peek_byte(thr) != DUK_DBG_IB_EOM) { - duk_tval *tv; - if (!duk_check_stack(thr, 1)) { - DUK_D(DUK_DPRINT("failed to allocate space for request dvalue(s)")); - goto fail; - } - tv = duk_debug_read_tval(thr); /* push to stack */ - if (tv == NULL) { - /* detached */ - return; - } - nvalues++; - } - DUK_ASSERT(duk_get_top(thr) == old_top + nvalues); - - /* Request callback should push values for reply to client onto valstack */ - DUK_D(DUK_DPRINT("calling into AppRequest request_cb with nvalues=%ld, old_top=%ld, top=%ld", - (long) nvalues, - (long) old_top, - (long) duk_get_top(thr))); - nrets = heap->dbg_request_cb(thr, heap->dbg_udata, nvalues); - DUK_D(DUK_DPRINT("returned from AppRequest request_cb; nvalues=%ld -> nrets=%ld, old_top=%ld, top=%ld", - (long) nvalues, - (long) nrets, - (long) old_top, - (long) duk_get_top(thr))); - if (nrets >= 0) { - DUK_ASSERT(duk_get_top(thr) >= old_top + nrets); - if (duk_get_top(thr) < old_top + nrets) { - DUK_D(DUK_DPRINT("AppRequest callback doesn't match value stack configuration, " - "top=%ld < old_top=%ld + nrets=%ld; " - "this might mean it's unsafe to continue!", - (long) duk_get_top(thr), - (long) old_top, - (long) nrets)); - goto fail; - } - - /* Reply with tvals pushed by request callback */ - duk_debug_write_byte(thr, DUK_DBG_IB_REPLY); - top = duk_get_top(thr); - for (idx = top - nrets; idx < top; idx++) { - duk_debug_write_tval(thr, DUK_GET_TVAL_POSIDX(thr, idx)); - } - duk_debug_write_eom(thr); - } else { - DUK_ASSERT(duk_get_top(thr) >= old_top + 1); - if (duk_get_top(thr) < old_top + 1) { - DUK_D(DUK_DPRINT("request callback return value doesn't match value stack configuration")); - goto fail; - } - duk_debug_write_error_eom(thr, DUK_DBG_ERR_APPLICATION, duk_get_string(thr, -1)); - } - - duk_set_top(thr, old_top); /* restore stack top */ - } else { - DUK_D(DUK_DPRINT("no request callback, treat AppRequest as unsupported")); - duk_debug_write_error_eom(thr, DUK_DBG_ERR_UNSUPPORTED, "AppRequest unsupported by target"); - } - - return; - -fail: - duk_set_top(thr, old_top); /* restore stack top */ - DUK__SET_CONN_BROKEN(thr, 1); -} - -/* - * DumpHeap command - */ - -#if defined(DUK_USE_DEBUGGER_DUMPHEAP) -/* XXX: this has some overlap with object inspection; remove this and make - * DumpHeap return lists of heapptrs instead? - */ -DUK_LOCAL void duk__debug_dump_heaphdr(duk_hthread *thr, duk_heap *heap, duk_heaphdr *hdr) { - DUK_UNREF(heap); - - duk_debug_write_heapptr(thr, hdr); - duk_debug_write_uint(thr, (duk_uint32_t) DUK_HEAPHDR_GET_TYPE(hdr)); - duk_debug_write_uint(thr, (duk_uint32_t) DUK_HEAPHDR_GET_FLAGS_RAW(hdr)); -#if defined(DUK_USE_REFERENCE_COUNTING) - duk_debug_write_uint(thr, (duk_uint32_t) DUK_HEAPHDR_GET_REFCOUNT(hdr)); -#else - duk_debug_write_int(thr, (duk_int32_t) -1); -#endif - - switch (DUK_HEAPHDR_GET_TYPE(hdr)) { - case DUK_HTYPE_STRING: { - duk_hstring *h = (duk_hstring *) hdr; - - duk_debug_write_uint(thr, (duk_uint32_t) DUK_HSTRING_GET_BYTELEN(h)); - duk_debug_write_uint(thr, (duk_uint32_t) DUK_HSTRING_GET_CHARLEN(h)); - duk_debug_write_uint(thr, (duk_uint32_t) DUK_HSTRING_GET_HASH(h)); - duk_debug_write_hstring(thr, h); - break; - } - case DUK_HTYPE_OBJECT: { - duk_hobject *h = (duk_hobject *) hdr; - duk_hstring *k; - duk_uint_fast32_t i; - - duk_debug_write_uint(thr, (duk_uint32_t) DUK_HOBJECT_GET_CLASS_NUMBER(h)); - duk_debug_write_heapptr(thr, (duk_heaphdr *) DUK_HOBJECT_GET_PROTOTYPE(heap, h)); - duk_debug_write_uint(thr, (duk_uint32_t) DUK_HOBJECT_GET_ESIZE(h)); - duk_debug_write_uint(thr, (duk_uint32_t) DUK_HOBJECT_GET_ENEXT(h)); - duk_debug_write_uint(thr, (duk_uint32_t) DUK_HOBJECT_GET_ASIZE(h)); - duk_debug_write_uint(thr, (duk_uint32_t) DUK_HOBJECT_GET_HSIZE(h)); - - for (i = 0; i < (duk_uint_fast32_t) DUK_HOBJECT_GET_ENEXT(h); i++) { - duk_debug_write_uint(thr, (duk_uint32_t) DUK_HOBJECT_E_GET_FLAGS(heap, h, i)); - k = DUK_HOBJECT_E_GET_KEY(heap, h, i); - duk_debug_write_heapptr(thr, (duk_heaphdr *) k); - if (k == NULL) { - duk_debug_write_int(thr, 0); /* isAccessor */ - duk_debug_write_unused(thr); - continue; - } - if (DUK_HOBJECT_E_SLOT_IS_ACCESSOR(heap, h, i)) { - duk_debug_write_int(thr, 1); /* isAccessor */ - duk_debug_write_heapptr(thr, (duk_heaphdr *) DUK_HOBJECT_E_GET_VALUE_PTR(heap, h, i)->a.get); - duk_debug_write_heapptr(thr, (duk_heaphdr *) DUK_HOBJECT_E_GET_VALUE_PTR(heap, h, i)->a.set); - } else { - duk_debug_write_int(thr, 0); /* isAccessor */ - - duk__debug_write_tval_heapptr(thr, &DUK_HOBJECT_E_GET_VALUE_PTR(heap, h, i)->v); - } - } - - for (i = 0; i < (duk_uint_fast32_t) DUK_HOBJECT_GET_ASIZE(h); i++) { - /* Note: array dump will include elements beyond - * 'length'. - */ - duk__debug_write_tval_heapptr(thr, DUK_HOBJECT_A_GET_VALUE_PTR(heap, h, i)); - } - break; - } - case DUK_HTYPE_BUFFER: { - duk_hbuffer *h = (duk_hbuffer *) hdr; - - duk_debug_write_uint(thr, (duk_uint32_t) DUK_HBUFFER_GET_SIZE(h)); - duk_debug_write_buffer(thr, (const char *) DUK_HBUFFER_GET_DATA_PTR(heap, h), (duk_size_t) DUK_HBUFFER_GET_SIZE(h)); - break; - } - default: { - DUK_D(DUK_DPRINT("invalid htype: %d", (int) DUK_HEAPHDR_GET_TYPE(hdr))); - } - } -} - -DUK_LOCAL void duk__debug_dump_heap_allocated(duk_hthread *thr, duk_heap *heap) { - duk_heaphdr *hdr; - - hdr = heap->heap_allocated; - while (hdr != NULL) { - duk__debug_dump_heaphdr(thr, heap, hdr); - hdr = DUK_HEAPHDR_GET_NEXT(heap, hdr); - } -} - -DUK_LOCAL void duk__debug_dump_strtab(duk_hthread *thr, duk_heap *heap) { - duk_uint32_t i; - duk_hstring *h; - - for (i = 0; i < heap->st_size; i++) { -#if defined(DUK_USE_STRTAB_PTRCOMP) - h = DUK_USE_HEAPPTR_DEC16((heap)->heap_udata, heap->strtable16[i]); -#else - h = heap->strtable[i]; -#endif - while (h != NULL) { - duk__debug_dump_heaphdr(thr, heap, (duk_heaphdr *) h); - h = h->hdr.h_next; - } - } -} - -DUK_LOCAL void duk__debug_handle_dump_heap(duk_hthread *thr, duk_heap *heap) { - DUK_D(DUK_DPRINT("debug command DumpHeap")); - - duk_debug_write_reply(thr); - duk__debug_dump_heap_allocated(thr, heap); - duk__debug_dump_strtab(thr, heap); - duk_debug_write_eom(thr); -} -#endif /* DUK_USE_DEBUGGER_DUMPHEAP */ - -DUK_LOCAL void duk__debug_handle_get_bytecode(duk_hthread *thr, duk_heap *heap) { - duk_activation *act; - duk_hcompfunc *fun = NULL; - duk_size_t i, n; - duk_tval *tv; - duk_hobject **fn; - duk_int32_t level = -1; - duk_uint8_t ibyte; - - DUK_UNREF(heap); - - DUK_D(DUK_DPRINT("debug command GetBytecode")); - - ibyte = duk_debug_peek_byte(thr); - if (ibyte != DUK_DBG_IB_EOM) { - tv = duk_debug_read_tval(thr); - if (tv == NULL) { - /* detached */ - return; - } - if (DUK_TVAL_IS_OBJECT(tv)) { - /* tentative, checked later */ - fun = (duk_hcompfunc *) DUK_TVAL_GET_OBJECT(tv); - DUK_ASSERT(fun != NULL); - } else if (DUK_TVAL_IS_NUMBER(tv)) { - level = (duk_int32_t) DUK_TVAL_GET_NUMBER(tv); - } else { - DUK_D(DUK_DPRINT("invalid argument to GetBytecode: %!T", tv)); - goto fail_args; - } - } - - if (fun == NULL) { - act = duk_hthread_get_activation_for_level(thr, level); - if (act == NULL) { - goto fail_index; - } - fun = (duk_hcompfunc *) DUK_ACT_GET_FUNC(act); - } - - if (fun == NULL || !DUK_HOBJECT_IS_COMPFUNC((duk_hobject *) fun)) { - DUK_D(DUK_DPRINT("invalid argument to GetBytecode: %!O", fun)); - goto fail_args; - } - DUK_ASSERT(fun != NULL && DUK_HOBJECT_IS_COMPFUNC((duk_hobject *) fun)); - - duk_debug_write_reply(thr); - n = DUK_HCOMPFUNC_GET_CONSTS_COUNT(heap, fun); - duk_debug_write_int(thr, (duk_int32_t) n); - tv = DUK_HCOMPFUNC_GET_CONSTS_BASE(heap, fun); - for (i = 0; i < n; i++) { - duk_debug_write_tval(thr, tv); - tv++; - } - n = DUK_HCOMPFUNC_GET_FUNCS_COUNT(heap, fun); - duk_debug_write_int(thr, (duk_int32_t) n); - fn = DUK_HCOMPFUNC_GET_FUNCS_BASE(heap, fun); - for (i = 0; i < n; i++) { - duk_debug_write_hobject(thr, *fn); - fn++; - } - duk_debug_write_string(thr, - (const char *) DUK_HCOMPFUNC_GET_CODE_BASE(heap, fun), - (duk_size_t) DUK_HCOMPFUNC_GET_CODE_SIZE(heap, fun)); - duk_debug_write_eom(thr); - return; - -fail_args: - duk_debug_write_error_eom(thr, DUK_DBG_ERR_UNKNOWN, "invalid argument"); - return; - -fail_index: - duk_debug_write_error_eom(thr, DUK_DBG_ERR_NOTFOUND, "invalid callstack index"); - return; -} - -/* - * Object inspection commands: GetHeapObjInfo, GetObjPropDesc, - * GetObjPropDescRange - */ - -#if defined(DUK_USE_DEBUGGER_INSPECT) - -#if 0 /* pruned */ -DUK_LOCAL const char * const duk__debug_getinfo_heaphdr_keys[] = { - "reachable", - "temproot", - "finalizable", - "finalized", - "readonly" - /* NULL not needed here */ -}; -DUK_LOCAL duk_uint_t duk__debug_getinfo_heaphdr_masks[] = { - DUK_HEAPHDR_FLAG_REACHABLE, - DUK_HEAPHDR_FLAG_TEMPROOT, - DUK_HEAPHDR_FLAG_FINALIZABLE, - DUK_HEAPHDR_FLAG_FINALIZED, - DUK_HEAPHDR_FLAG_READONLY, - 0 /* terminator */ -}; -#endif -DUK_LOCAL const char * const duk__debug_getinfo_hstring_keys[] = { -#if 0 - "arridx", - "symbol", - "hidden", - "reserved_word", - "strict_reserved_word", - "eval_or_arguments", -#endif - "extdata" - /* NULL not needed here */ -}; -DUK_LOCAL duk_uint_t duk__debug_getinfo_hstring_masks[] = { -#if 0 - DUK_HSTRING_FLAG_ARRIDX, - DUK_HSTRING_FLAG_SYMBOL, - DUK_HSTRING_FLAG_HIDDEN, - DUK_HSTRING_FLAG_RESERVED_WORD, - DUK_HSTRING_FLAG_STRICT_RESERVED_WORD, - DUK_HSTRING_FLAG_EVAL_OR_ARGUMENTS, -#endif - DUK_HSTRING_FLAG_EXTDATA, - 0 /* terminator */ -}; -DUK_LOCAL const char * const duk__debug_getinfo_hobject_keys[] = { - "extensible", "constructable", "callable", "boundfunc", "compfunc", "natfunc", "bufobj", - "fastrefs", "array_part", "strict", "notail", "newenv", "namebinding", "createargs", - "have_finalizer", "exotic_array", "exotic_stringobj", "exotic_arguments", "exotic_proxyobj", "special_call" - /* NULL not needed here */ -}; -DUK_LOCAL duk_uint_t duk__debug_getinfo_hobject_masks[] = { - DUK_HOBJECT_FLAG_EXTENSIBLE, DUK_HOBJECT_FLAG_CONSTRUCTABLE, DUK_HOBJECT_FLAG_CALLABLE, - DUK_HOBJECT_FLAG_BOUNDFUNC, DUK_HOBJECT_FLAG_COMPFUNC, DUK_HOBJECT_FLAG_NATFUNC, - DUK_HOBJECT_FLAG_BUFOBJ, DUK_HOBJECT_FLAG_FASTREFS, DUK_HOBJECT_FLAG_ARRAY_PART, - DUK_HOBJECT_FLAG_STRICT, DUK_HOBJECT_FLAG_NOTAIL, DUK_HOBJECT_FLAG_NEWENV, - DUK_HOBJECT_FLAG_NAMEBINDING, DUK_HOBJECT_FLAG_CREATEARGS, DUK_HOBJECT_FLAG_HAVE_FINALIZER, - DUK_HOBJECT_FLAG_EXOTIC_ARRAY, DUK_HOBJECT_FLAG_EXOTIC_STRINGOBJ, DUK_HOBJECT_FLAG_EXOTIC_ARGUMENTS, - DUK_HOBJECT_FLAG_EXOTIC_PROXYOBJ, DUK_HOBJECT_FLAG_SPECIAL_CALL, 0 /* terminator */ -}; -DUK_LOCAL const char * const duk__debug_getinfo_hbuffer_keys[] = { - "dynamic", - "external" - /* NULL not needed here */ -}; -DUK_LOCAL duk_uint_t duk__debug_getinfo_hbuffer_masks[] = { - DUK_HBUFFER_FLAG_DYNAMIC, - DUK_HBUFFER_FLAG_EXTERNAL, - 0 /* terminator */ -}; - -DUK_LOCAL void duk__debug_getinfo_flags_key(duk_hthread *thr, const char *key) { - duk_debug_write_uint(thr, 0); - duk_debug_write_cstring(thr, key); -} - -DUK_LOCAL void duk__debug_getinfo_prop_uint(duk_hthread *thr, const char *key, duk_uint_t val) { - duk_debug_write_uint(thr, 0); - duk_debug_write_cstring(thr, key); - duk_debug_write_uint(thr, val); -} - -DUK_LOCAL void duk__debug_getinfo_prop_int(duk_hthread *thr, const char *key, duk_int_t val) { - duk_debug_write_uint(thr, 0); - duk_debug_write_cstring(thr, key); - duk_debug_write_int(thr, val); -} - -DUK_LOCAL void duk__debug_getinfo_prop_bool(duk_hthread *thr, const char *key, duk_bool_t val) { - duk_debug_write_uint(thr, 0); - duk_debug_write_cstring(thr, key); - duk_debug_write_boolean(thr, val); -} - -DUK_LOCAL void duk__debug_getinfo_bitmask(duk_hthread *thr, const char * const *keys, duk_uint_t *masks, duk_uint_t flags) { - const char *key; - duk_uint_t mask; - - for (;;) { - mask = *masks++; - if (mask == 0) { - break; - } - key = *keys++; - DUK_ASSERT(key != NULL); - - DUK_DD(DUK_DDPRINT("inspect bitmask: key=%s, mask=0x%08lx, flags=0x%08lx", - key, - (unsigned long) mask, - (unsigned long) flags)); - duk__debug_getinfo_prop_bool(thr, key, flags & mask); - } -} - -/* Inspect a property using a virtual index into a conceptual property list - * consisting of (1) all array part items from [0,a_size[ (even when above - * .length) and (2) all entry part items from [0,e_next[. Unused slots are - * indicated using dvalue 'unused'. - */ -DUK_LOCAL duk_bool_t duk__debug_getprop_index(duk_hthread *thr, duk_heap *heap, duk_hobject *h_obj, duk_uint_t idx) { - duk_uint_t a_size; - duk_tval *tv; - duk_hstring *h_key; - duk_hobject *h_getset; - duk_uint_t flags; - - DUK_UNREF(heap); - - a_size = DUK_HOBJECT_GET_ASIZE(h_obj); - if (idx < a_size) { - duk_debug_write_uint(thr, DUK_PROPDESC_FLAGS_WEC); - duk_debug_write_uint(thr, idx); - tv = DUK_HOBJECT_A_GET_VALUE_PTR(heap, h_obj, idx); - duk_debug_write_tval(thr, tv); - return 1; - } - - idx -= a_size; - if (idx >= DUK_HOBJECT_GET_ENEXT(h_obj)) { - return 0; - } - - h_key = DUK_HOBJECT_E_GET_KEY(heap, h_obj, idx); - if (h_key == NULL) { - duk_debug_write_uint(thr, 0); - duk_debug_write_null(thr); - duk_debug_write_unused(thr); - return 1; - } - - flags = DUK_HOBJECT_E_GET_FLAGS(heap, h_obj, idx); - if (DUK_HSTRING_HAS_SYMBOL(h_key)) { - flags |= DUK_DBG_PROPFLAG_SYMBOL; - } - if (DUK_HSTRING_HAS_HIDDEN(h_key)) { - flags |= DUK_DBG_PROPFLAG_HIDDEN; - } - duk_debug_write_uint(thr, flags); - duk_debug_write_hstring(thr, h_key); - if (flags & DUK_PROPDESC_FLAG_ACCESSOR) { - h_getset = DUK_HOBJECT_E_GET_VALUE_GETTER(heap, h_obj, idx); - if (h_getset) { - duk_debug_write_hobject(thr, h_getset); - } else { - duk_debug_write_null(thr); - } - h_getset = DUK_HOBJECT_E_GET_VALUE_SETTER(heap, h_obj, idx); - if (h_getset) { - duk_debug_write_hobject(thr, h_getset); - } else { - duk_debug_write_null(thr); - } - } else { - tv = DUK_HOBJECT_E_GET_VALUE_TVAL_PTR(heap, h_obj, idx); - duk_debug_write_tval(thr, tv); - } - return 1; -} - -DUK_LOCAL void duk__debug_handle_get_heap_obj_info(duk_hthread *thr, duk_heap *heap) { - duk_heaphdr *h; - - DUK_D(DUK_DPRINT("debug command GetHeapObjInfo")); - DUK_UNREF(heap); - - DUK_ASSERT(sizeof(duk__debug_getinfo_hstring_keys) / sizeof(const char *) == - sizeof(duk__debug_getinfo_hstring_masks) / sizeof(duk_uint_t) - 1); - DUK_ASSERT(sizeof(duk__debug_getinfo_hobject_keys) / sizeof(const char *) == - sizeof(duk__debug_getinfo_hobject_masks) / sizeof(duk_uint_t) - 1); - DUK_ASSERT(sizeof(duk__debug_getinfo_hbuffer_keys) / sizeof(const char *) == - sizeof(duk__debug_getinfo_hbuffer_masks) / sizeof(duk_uint_t) - 1); - - h = duk_debug_read_any_ptr(thr); - if (!h) { - duk_debug_write_error_eom(thr, DUK_DBG_ERR_UNKNOWN, "invalid target"); - return; - } - - duk_debug_write_reply(thr); - - /* As with all inspection code, we rely on the debug client providing - * a valid, non-stale pointer: there's no portable way to safely - * validate the pointer here. - */ - - duk__debug_getinfo_flags_key(thr, "heapptr"); - duk_debug_write_heapptr(thr, h); - - /* XXX: comes out as signed now */ - duk__debug_getinfo_prop_uint(thr, "heaphdr_flags", (duk_uint_t) DUK_HEAPHDR_GET_FLAGS(h)); - duk__debug_getinfo_prop_uint(thr, "heaphdr_type", (duk_uint_t) DUK_HEAPHDR_GET_TYPE(h)); -#if defined(DUK_USE_REFERENCE_COUNTING) - duk__debug_getinfo_prop_uint(thr, "refcount", (duk_uint_t) DUK_HEAPHDR_GET_REFCOUNT(h)); -#endif -#if 0 /* pruned */ - duk__debug_getinfo_bitmask(thr, - duk__debug_getinfo_heaphdr_keys, - duk__debug_getinfo_heaphdr_masks, - DUK_HEAPHDR_GET_FLAGS_RAW(h)); -#endif - - switch (DUK_HEAPHDR_GET_TYPE(h)) { - case DUK_HTYPE_STRING: { - duk_hstring *h_str; - - h_str = (duk_hstring *) h; - duk__debug_getinfo_bitmask(thr, - duk__debug_getinfo_hstring_keys, - duk__debug_getinfo_hstring_masks, - DUK_HEAPHDR_GET_FLAGS_RAW(h)); - duk__debug_getinfo_prop_uint(thr, "bytelen", (duk_uint_t) DUK_HSTRING_GET_BYTELEN(h_str)); - duk__debug_getinfo_prop_uint(thr, "charlen", (duk_uint_t) DUK_HSTRING_GET_CHARLEN(h_str)); - duk__debug_getinfo_prop_uint(thr, "hash", (duk_uint_t) DUK_HSTRING_GET_HASH(h_str)); - duk__debug_getinfo_flags_key(thr, "data"); - duk_debug_write_hstring(thr, h_str); - break; - } - case DUK_HTYPE_OBJECT: { - duk_hobject *h_obj; - duk_hobject *h_proto; - - h_obj = (duk_hobject *) h; - h_proto = DUK_HOBJECT_GET_PROTOTYPE(heap, h_obj); - - /* duk_hobject specific fields. */ - duk__debug_getinfo_bitmask(thr, - duk__debug_getinfo_hobject_keys, - duk__debug_getinfo_hobject_masks, - DUK_HEAPHDR_GET_FLAGS_RAW(h)); - duk__debug_getinfo_prop_uint(thr, "class_number", DUK_HOBJECT_GET_CLASS_NUMBER(h_obj)); - duk__debug_getinfo_flags_key(thr, "class_name"); - duk_debug_write_hstring(thr, DUK_HOBJECT_GET_CLASS_STRING(heap, h_obj)); - duk__debug_getinfo_flags_key(thr, "prototype"); - if (h_proto != NULL) { - duk_debug_write_hobject(thr, h_proto); - } else { - duk_debug_write_null(thr); - } - duk__debug_getinfo_flags_key(thr, "props"); - duk_debug_write_pointer(thr, (void *) DUK_HOBJECT_GET_PROPS(heap, h_obj)); - duk__debug_getinfo_prop_uint(thr, "e_size", (duk_uint_t) DUK_HOBJECT_GET_ESIZE(h_obj)); - duk__debug_getinfo_prop_uint(thr, "e_next", (duk_uint_t) DUK_HOBJECT_GET_ENEXT(h_obj)); - duk__debug_getinfo_prop_uint(thr, "a_size", (duk_uint_t) DUK_HOBJECT_GET_ASIZE(h_obj)); - duk__debug_getinfo_prop_uint(thr, "h_size", (duk_uint_t) DUK_HOBJECT_GET_HSIZE(h_obj)); - - if (DUK_HOBJECT_IS_ARRAY(h_obj)) { - duk_harray *h_arr; - h_arr = (duk_harray *) h_obj; - - duk__debug_getinfo_prop_uint(thr, "length", (duk_uint_t) h_arr->length); - duk__debug_getinfo_prop_bool(thr, "length_nonwritable", h_arr->length_nonwritable); - } - - if (DUK_HOBJECT_IS_NATFUNC(h_obj)) { - duk_hnatfunc *h_fun; - h_fun = (duk_hnatfunc *) h_obj; - - duk__debug_getinfo_prop_int(thr, "nargs", h_fun->nargs); - duk__debug_getinfo_prop_int(thr, "magic", h_fun->magic); - duk__debug_getinfo_prop_bool(thr, "varargs", h_fun->magic == DUK_HNATFUNC_NARGS_VARARGS); - /* Native function pointer may be different from a void pointer, - * and we serialize it from memory directly now (no byte swapping etc). - */ - duk__debug_getinfo_flags_key(thr, "funcptr"); - duk_debug_write_buffer(thr, (const char *) &h_fun->func, sizeof(h_fun->func)); - } - - if (DUK_HOBJECT_IS_COMPFUNC(h_obj)) { - duk_hcompfunc *h_fun; - duk_hbuffer *h_buf; - duk_hobject *h_lexenv; - duk_hobject *h_varenv; - h_fun = (duk_hcompfunc *) h_obj; - - duk__debug_getinfo_prop_int(thr, "nregs", h_fun->nregs); - duk__debug_getinfo_prop_int(thr, "nargs", h_fun->nargs); - - duk__debug_getinfo_flags_key(thr, "lex_env"); - h_lexenv = DUK_HCOMPFUNC_GET_LEXENV(thr->heap, h_fun); - if (h_lexenv != NULL) { - duk_debug_write_hobject(thr, h_lexenv); - } else { - duk_debug_write_null(thr); - } - duk__debug_getinfo_flags_key(thr, "var_env"); - h_varenv = DUK_HCOMPFUNC_GET_VARENV(thr->heap, h_fun); - if (h_varenv != NULL) { - duk_debug_write_hobject(thr, h_varenv); - } else { - duk_debug_write_null(thr); - } - - duk__debug_getinfo_prop_uint(thr, "start_line", h_fun->start_line); - duk__debug_getinfo_prop_uint(thr, "end_line", h_fun->end_line); - h_buf = (duk_hbuffer *) DUK_HCOMPFUNC_GET_DATA(thr->heap, h_fun); - if (h_buf != NULL) { - duk__debug_getinfo_flags_key(thr, "data"); - duk_debug_write_heapptr(thr, (duk_heaphdr *) h_buf); - } - } - - if (DUK_HOBJECT_IS_BOUNDFUNC(h_obj)) { - duk_hboundfunc *h_bfun; - h_bfun = (duk_hboundfunc *) (void *) h_obj; - - duk__debug_getinfo_flags_key(thr, "target"); - duk_debug_write_tval(thr, &h_bfun->target); - duk__debug_getinfo_flags_key(thr, "this_binding"); - duk_debug_write_tval(thr, &h_bfun->this_binding); - duk__debug_getinfo_flags_key(thr, "nargs"); - duk_debug_write_int(thr, h_bfun->nargs); - /* h_bfun->args not exposed now */ - } - - if (DUK_HOBJECT_IS_THREAD(h_obj)) { - /* XXX: Currently no inspection of threads, e.g. value stack, call - * stack, catch stack, etc. - */ - duk_hthread *h_thr; - h_thr = (duk_hthread *) h_obj; - DUK_UNREF(h_thr); - } - - if (DUK_HOBJECT_IS_DECENV(h_obj)) { - duk_hdecenv *h_env; - h_env = (duk_hdecenv *) h_obj; - - duk__debug_getinfo_flags_key(thr, "thread"); - duk_debug_write_heapptr(thr, (duk_heaphdr *) (h_env->thread)); - duk__debug_getinfo_flags_key(thr, "varmap"); - duk_debug_write_heapptr(thr, (duk_heaphdr *) (h_env->varmap)); - duk__debug_getinfo_prop_uint(thr, "regbase", (duk_uint_t) h_env->regbase_byteoff); - } - - if (DUK_HOBJECT_IS_OBJENV(h_obj)) { - duk_hobjenv *h_env; - h_env = (duk_hobjenv *) h_obj; - - duk__debug_getinfo_flags_key(thr, "target"); - duk_debug_write_heapptr(thr, (duk_heaphdr *) (h_env->target)); - duk__debug_getinfo_prop_bool(thr, "has_this", h_env->has_this); - } - -#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) - if (DUK_HOBJECT_IS_BUFOBJ(h_obj)) { - duk_hbufobj *h_bufobj; - h_bufobj = (duk_hbufobj *) h_obj; - - duk__debug_getinfo_prop_uint(thr, "slice_offset", h_bufobj->offset); - duk__debug_getinfo_prop_uint(thr, "slice_length", h_bufobj->length); - duk__debug_getinfo_prop_uint(thr, "elem_shift", (duk_uint_t) h_bufobj->shift); - duk__debug_getinfo_prop_uint(thr, "elem_type", (duk_uint_t) h_bufobj->elem_type); - duk__debug_getinfo_prop_bool(thr, "is_typedarray", (duk_uint_t) h_bufobj->is_typedarray); - if (h_bufobj->buf != NULL) { - duk__debug_getinfo_flags_key(thr, "buffer"); - duk_debug_write_heapptr(thr, (duk_heaphdr *) h_bufobj->buf); - } - } -#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ - break; - } - case DUK_HTYPE_BUFFER: { - duk_hbuffer *h_buf; - - h_buf = (duk_hbuffer *) h; - duk__debug_getinfo_bitmask(thr, - duk__debug_getinfo_hbuffer_keys, - duk__debug_getinfo_hbuffer_masks, - DUK_HEAPHDR_GET_FLAGS_RAW(h)); - duk__debug_getinfo_prop_uint(thr, "size", (duk_uint_t) DUK_HBUFFER_GET_SIZE(h_buf)); - duk__debug_getinfo_flags_key(thr, "dataptr"); - duk_debug_write_pointer(thr, (void *) DUK_HBUFFER_GET_DATA_PTR(thr->heap, h_buf)); - duk__debug_getinfo_flags_key(thr, "data"); - duk_debug_write_hbuffer(thr, h_buf); /* tolerates NULL h_buf */ - break; - } - default: { - /* Since we already started writing the reply, just emit nothing. */ - DUK_D(DUK_DPRINT("inspect target pointer has invalid heaphdr type")); - } - } - - duk_debug_write_eom(thr); -} - -DUK_LOCAL void duk__debug_handle_get_obj_prop_desc(duk_hthread *thr, duk_heap *heap) { - duk_heaphdr *h; - duk_hobject *h_obj; - duk_hstring *h_key; - duk_propdesc desc; - - DUK_D(DUK_DPRINT("debug command GetObjPropDesc")); - DUK_UNREF(heap); - - h = duk_debug_read_any_ptr(thr); - if (!h) { - duk_debug_write_error_eom(thr, DUK_DBG_ERR_UNKNOWN, "invalid target"); - return; - } - h_key = duk_debug_read_hstring(thr); - if (h == NULL || DUK_HEAPHDR_GET_TYPE(h) != DUK_HTYPE_OBJECT || h_key == NULL) { - goto fail_args; - } - h_obj = (duk_hobject *) h; - - if (duk_hobject_get_own_propdesc(thr, h_obj, h_key, &desc, 0 /*flags*/)) { - duk_int_t virtual_idx; - duk_bool_t rc; - - /* To use the shared helper need the virtual index. */ - DUK_ASSERT(desc.e_idx >= 0 || desc.a_idx >= 0); - virtual_idx = (desc.a_idx >= 0 ? desc.a_idx : (duk_int_t) DUK_HOBJECT_GET_ASIZE(h_obj) + desc.e_idx); - - duk_debug_write_reply(thr); - rc = duk__debug_getprop_index(thr, heap, h_obj, (duk_uint_t) virtual_idx); - DUK_ASSERT(rc == 1); - DUK_UNREF(rc); - duk_debug_write_eom(thr); - } else { - duk_debug_write_error_eom(thr, DUK_DBG_ERR_NOTFOUND, "not found"); - } - return; - -fail_args: - duk_debug_write_error_eom(thr, DUK_DBG_ERR_UNKNOWN, "invalid args"); -} - -DUK_LOCAL void duk__debug_handle_get_obj_prop_desc_range(duk_hthread *thr, duk_heap *heap) { - duk_heaphdr *h; - duk_hobject *h_obj; - duk_uint_t idx, idx_start, idx_end; - - DUK_D(DUK_DPRINT("debug command GetObjPropDescRange")); - DUK_UNREF(heap); - - h = duk_debug_read_any_ptr(thr); - idx_start = (duk_uint_t) duk_debug_read_int(thr); - idx_end = (duk_uint_t) duk_debug_read_int(thr); - if (h == NULL || DUK_HEAPHDR_GET_TYPE(h) != DUK_HTYPE_OBJECT) { - goto fail_args; - } - h_obj = (duk_hobject *) h; - - /* The index range space is conceptually the array part followed by the - * entry part. Unlike normal enumeration all slots are exposed here as - * is and return 'unused' if the slots are not in active use. In particular - * the array part is included for the full a_size regardless of what the - * array .length is. - */ - - duk_debug_write_reply(thr); - for (idx = idx_start; idx < idx_end; idx++) { - if (!duk__debug_getprop_index(thr, heap, h_obj, idx)) { - break; - } - } - duk_debug_write_eom(thr); - return; - -fail_args: - duk_debug_write_error_eom(thr, DUK_DBG_ERR_UNKNOWN, "invalid args"); -} - -#endif /* DUK_USE_DEBUGGER_INSPECT */ - -/* - * Process incoming debug requests - * - * Individual request handlers can push temporaries on the value stack and - * rely on duk__debug_process_message() to restore the value stack top - * automatically. - */ - -/* Process one debug message. Automatically restore value stack top to its - * entry value, so that individual message handlers don't need exact value - * stack handling which is convenient. - */ -DUK_LOCAL void duk__debug_process_message(duk_hthread *thr) { - duk_heap *heap; - duk_uint8_t x; - duk_int32_t cmd; - duk_idx_t entry_top; - - DUK_ASSERT(thr != NULL); - heap = thr->heap; - DUK_ASSERT(heap != NULL); - - entry_top = duk_get_top(thr); - - x = duk_debug_read_byte(thr); - switch (x) { - case DUK_DBG_IB_REQUEST: { - cmd = duk_debug_read_int(thr); - switch (cmd) { - case DUK_DBG_CMD_BASICINFO: { - duk__debug_handle_basic_info(thr, heap); - break; - } - case DUK_DBG_CMD_TRIGGERSTATUS: { - duk__debug_handle_trigger_status(thr, heap); - break; - } - case DUK_DBG_CMD_PAUSE: { - duk__debug_handle_pause(thr, heap); - break; - } - case DUK_DBG_CMD_RESUME: { - duk__debug_handle_resume(thr, heap); - break; - } - case DUK_DBG_CMD_STEPINTO: - case DUK_DBG_CMD_STEPOVER: - case DUK_DBG_CMD_STEPOUT: { - duk__debug_handle_step(thr, heap, cmd); - break; - } - case DUK_DBG_CMD_LISTBREAK: { - duk__debug_handle_list_break(thr, heap); - break; - } - case DUK_DBG_CMD_ADDBREAK: { - duk__debug_handle_add_break(thr, heap); - break; - } - case DUK_DBG_CMD_DELBREAK: { - duk__debug_handle_del_break(thr, heap); - break; - } - case DUK_DBG_CMD_GETVAR: { - duk__debug_handle_get_var(thr, heap); - break; - } - case DUK_DBG_CMD_PUTVAR: { - duk__debug_handle_put_var(thr, heap); - break; - } - case DUK_DBG_CMD_GETCALLSTACK: { - duk__debug_handle_get_call_stack(thr, heap); - break; - } - case DUK_DBG_CMD_GETLOCALS: { - duk__debug_handle_get_locals(thr, heap); - break; - } - case DUK_DBG_CMD_EVAL: { - duk__debug_handle_eval(thr, heap); - break; - } - case DUK_DBG_CMD_DETACH: { - /* The actual detached_cb call is postponed to message loop so - * we don't need any special precautions here (just skip to EOM - * on the already closed connection). - */ - duk__debug_handle_detach(thr, heap); - break; - } -#if defined(DUK_USE_DEBUGGER_DUMPHEAP) - case DUK_DBG_CMD_DUMPHEAP: { - duk__debug_handle_dump_heap(thr, heap); - break; - } -#endif /* DUK_USE_DEBUGGER_DUMPHEAP */ - case DUK_DBG_CMD_GETBYTECODE: { - duk__debug_handle_get_bytecode(thr, heap); - break; - } - case DUK_DBG_CMD_APPREQUEST: { - duk__debug_handle_apprequest(thr, heap); - break; - } -#if defined(DUK_USE_DEBUGGER_INSPECT) - case DUK_DBG_CMD_GETHEAPOBJINFO: { - duk__debug_handle_get_heap_obj_info(thr, heap); - break; - } - case DUK_DBG_CMD_GETOBJPROPDESC: { - duk__debug_handle_get_obj_prop_desc(thr, heap); - break; - } - case DUK_DBG_CMD_GETOBJPROPDESCRANGE: { - duk__debug_handle_get_obj_prop_desc_range(thr, heap); - break; - } -#endif /* DUK_USE_DEBUGGER_INSPECT */ - default: { - DUK_D(DUK_DPRINT("debug command unsupported: %d", (int) cmd)); - duk_debug_write_error_eom(thr, DUK_DBG_ERR_UNSUPPORTED, "unsupported command"); - } - } /* switch cmd */ - break; - } - case DUK_DBG_IB_REPLY: { - DUK_D(DUK_DPRINT("debug reply, skipping")); - break; - } - case DUK_DBG_IB_ERROR: { - DUK_D(DUK_DPRINT("debug error, skipping")); - break; - } - case DUK_DBG_IB_NOTIFY: { - DUK_D(DUK_DPRINT("debug notify, skipping")); - break; - } - default: { - DUK_D(DUK_DPRINT("invalid initial byte, drop connection: %d", (int) x)); - goto fail; - } - } /* switch initial byte */ - - DUK_ASSERT(duk_get_top(thr) >= entry_top); - duk_set_top(thr, entry_top); - duk__debug_skip_to_eom(thr); - return; - -fail: - DUK_ASSERT(duk_get_top(thr) >= entry_top); - duk_set_top(thr, entry_top); - DUK__SET_CONN_BROKEN(thr, 1); - return; -} - -DUK_LOCAL void duk__check_resend_status(duk_hthread *thr) { - if (thr->heap->dbg_read_cb != NULL && thr->heap->dbg_state_dirty) { - duk_debug_send_status(thr); - thr->heap->dbg_state_dirty = 0; - } -} - -DUK_INTERNAL duk_bool_t duk_debug_process_messages(duk_hthread *thr, duk_bool_t no_block) { -#if defined(DUK_USE_ASSERTIONS) - duk_idx_t entry_top; -#endif - duk_bool_t retval = 0; - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(thr->heap != NULL); -#if defined(DUK_USE_ASSERTIONS) - entry_top = duk_get_top(thr); -#endif - - DUK_D(DUK_DPRINT("process debug messages: read_cb=%s, no_block=%ld, detaching=%ld, processing=%ld", - thr->heap->dbg_read_cb ? "not NULL" : "NULL", - (long) no_block, - (long) thr->heap->dbg_detaching, - (long) thr->heap->dbg_processing)); - DUK_DD(DUK_DDPRINT("top at entry: %ld", (long) duk_get_top(thr))); - - /* thr->heap->dbg_detaching may be != 0 if a debugger write outside - * the message loop caused a transport error and detach1() to run. - */ - DUK_ASSERT(thr->heap->dbg_detaching == 0 || thr->heap->dbg_detaching == 1); - DUK_ASSERT(thr->heap->dbg_processing == 0); - thr->heap->dbg_processing = 1; - - /* Ensure dirty state causes a Status even if never process any - * messages. This is expected by the bytecode executor when in - * the running state. - */ - duk__check_resend_status(thr); - - for (;;) { - /* Process messages until we're no longer paused or we peek - * and see there's nothing to read right now. - */ - DUK_DD(DUK_DDPRINT("top at loop top: %ld", (long) duk_get_top(thr))); - DUK_ASSERT(thr->heap->dbg_processing == 1); - - while (thr->heap->dbg_read_cb == NULL && thr->heap->dbg_detaching) { - /* Detach is pending; can be triggered from outside the - * debugger loop (e.g. Status notify write error) or by - * previous message handling. Call detached callback - * here, in a controlled state, to ensure a possible - * reattach inside the detached_cb is handled correctly. - * - * Recheck for detach in a while loop: an immediate - * reattach involves a call to duk_debugger_attach() - * which writes a debugger handshake line immediately - * inside the API call. If the transport write fails - * for that handshake, we can immediately end up in a - * "transport broken, detaching" case several times here. - * Loop back until we're either cleanly attached or - * fully detached. - * - * NOTE: Reset dbg_processing = 1 forcibly, in case we - * re-attached; duk_debugger_attach() sets dbg_processing - * to 0 at the moment. - */ - - DUK_D(DUK_DPRINT("detach pending (dbg_read_cb == NULL, dbg_detaching != 0), call detach2")); - - duk__debug_do_detach2(thr->heap); - thr->heap->dbg_processing = 1; /* may be set to 0 by duk_debugger_attach() inside callback */ - - DUK_D(DUK_DPRINT("after detach2 (and possible reattach): dbg_read_cb=%s, dbg_detaching=%ld", - thr->heap->dbg_read_cb ? "not NULL" : "NULL", - (long) thr->heap->dbg_detaching)); - } - DUK_ASSERT(thr->heap->dbg_detaching == 0); /* true even with reattach */ - DUK_ASSERT(thr->heap->dbg_processing == 1); /* even after a detach and possible reattach */ - - if (thr->heap->dbg_read_cb == NULL) { - DUK_D(DUK_DPRINT("debug connection broken (and not detaching), stop processing messages")); - break; - } - - if (!DUK_HEAP_HAS_DEBUGGER_PAUSED(thr->heap) || no_block) { - if (!duk_debug_read_peek(thr)) { - /* Note: peek cannot currently trigger a detach - * so the dbg_detaching == 0 assert outside the - * loop is correct. - */ - DUK_D(DUK_DPRINT("processing debug message, peek indicated no data, stop processing messages")); - break; - } - DUK_D(DUK_DPRINT("processing debug message, peek indicated there is data, handle it")); - } else { - DUK_D(DUK_DPRINT("paused, process debug message, blocking if necessary")); - } - - duk__check_resend_status(thr); - duk__debug_process_message(thr); - duk__check_resend_status(thr); - - retval = 1; /* processed one or more messages */ - } - - DUK_ASSERT(thr->heap->dbg_detaching == 0); - DUK_ASSERT(thr->heap->dbg_processing == 1); - thr->heap->dbg_processing = 0; - - /* As an initial implementation, read flush after exiting the message - * loop. If transport is broken, this is a no-op (with debug logs). - */ - duk_debug_read_flush(thr); /* this cannot initiate a detach */ - DUK_ASSERT(thr->heap->dbg_detaching == 0); - - DUK_DD(DUK_DDPRINT("top at exit: %ld", (long) duk_get_top(thr))); - -#if defined(DUK_USE_ASSERTIONS) - /* Easy to get wrong, so assert for it. */ - DUK_ASSERT(entry_top == duk_get_top(thr)); -#endif - - return retval; -} - -/* - * Halt execution helper - */ - -/* Halt execution and enter a debugger message loop until execution is resumed - * by the client. PC for the current activation may be temporarily decremented - * so that the "current" instruction will be shown by the client. This helper - * is callable from anywhere, also outside bytecode executor. - */ - -DUK_INTERNAL void duk_debug_halt_execution(duk_hthread *thr, duk_bool_t use_prev_pc) { - duk_activation *act; - duk_hcompfunc *fun; - duk_instr_t *old_pc = NULL; - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(thr->heap != NULL); - DUK_ASSERT(duk_debug_is_attached(thr->heap)); - DUK_ASSERT(thr->heap->dbg_processing == 0); - DUK_ASSERT(!duk_debug_is_paused(thr->heap)); - - duk_debug_set_paused(thr->heap); - - act = thr->callstack_curr; - - /* NOTE: act may be NULL if an error is thrown outside of any activation, - * which may happen in the case of, e.g. syntax errors. - */ - - /* Decrement PC if that was requested, this requires a PC sync. */ - if (act != NULL) { - duk_hthread_sync_currpc(thr); - old_pc = act->curr_pc; - fun = (duk_hcompfunc *) DUK_ACT_GET_FUNC(act); - - /* Short circuit if is safe: if act->curr_pc != NULL, 'fun' is - * guaranteed to be a non-NULL ECMAScript function. - */ - DUK_ASSERT(act->curr_pc == NULL || (fun != NULL && DUK_HOBJECT_IS_COMPFUNC((duk_hobject *) fun))); - if (use_prev_pc && act->curr_pc != NULL && act->curr_pc > DUK_HCOMPFUNC_GET_CODE_BASE(thr->heap, fun)) { - act->curr_pc--; - } - } - - /* Process debug messages until we are no longer paused. */ - - /* NOTE: This is a bit fragile. It's important to ensure that - * duk_debug_process_messages() never throws an error or - * act->curr_pc will never be reset. - */ - - thr->heap->dbg_state_dirty = 1; - while (DUK_HEAP_HAS_DEBUGGER_PAUSED(thr->heap)) { - DUK_ASSERT(duk_debug_is_attached(thr->heap)); - DUK_ASSERT(thr->heap->dbg_processing == 0); - duk_debug_process_messages(thr, 0 /*no_block*/); - } - - /* XXX: Decrementing and restoring act->curr_pc works now, but if the - * debugger message loop gains the ability to adjust the current PC - * (e.g. a forced jump) restoring the PC here will break. Another - * approach would be to use a state flag for the "decrement 1 from - * topmost activation's PC" and take it into account whenever dealing - * with PC values. - */ - if (act != NULL) { - act->curr_pc = old_pc; /* restore PC */ - } -} - -/* - * Breakpoint management - */ - -DUK_INTERNAL duk_small_int_t duk_debug_add_breakpoint(duk_hthread *thr, duk_hstring *filename, duk_uint32_t line) { - duk_heap *heap; - duk_breakpoint *b; - - /* Caller must trigger recomputation of active breakpoint list. To - * ensure stale values are not used if that doesn't happen, clear the - * active breakpoint list here. - */ - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(filename != NULL); - heap = thr->heap; - DUK_ASSERT(heap != NULL); - - if (heap->dbg_breakpoint_count >= DUK_HEAP_MAX_BREAKPOINTS) { - DUK_D(DUK_DPRINT("failed to add breakpoint for %O:%ld, all breakpoint slots used", - (duk_heaphdr *) filename, - (long) line)); - return -1; - } - heap->dbg_breakpoints_active[0] = (duk_breakpoint *) NULL; - b = heap->dbg_breakpoints + (heap->dbg_breakpoint_count++); - b->filename = filename; - b->line = line; - DUK_HSTRING_INCREF(thr, filename); - - return (duk_small_int_t) (heap->dbg_breakpoint_count - 1); /* index */ -} - -DUK_INTERNAL duk_bool_t duk_debug_remove_breakpoint(duk_hthread *thr, duk_small_uint_t breakpoint_index) { - duk_heap *heap; - duk_hstring *h; - duk_breakpoint *b; - duk_size_t move_size; - - /* Caller must trigger recomputation of active breakpoint list. To - * ensure stale values are not used if that doesn't happen, clear the - * active breakpoint list here. - */ - - DUK_ASSERT(thr != NULL); - heap = thr->heap; - DUK_ASSERT(heap != NULL); - DUK_ASSERT(duk_debug_is_attached(thr->heap)); - DUK_ASSERT_DISABLE(breakpoint_index >= 0); /* unsigned */ - - if (breakpoint_index >= heap->dbg_breakpoint_count) { - DUK_D(DUK_DPRINT("invalid breakpoint index: %ld", (long) breakpoint_index)); - return 0; - } - b = heap->dbg_breakpoints + breakpoint_index; - - h = b->filename; - DUK_ASSERT(h != NULL); - - move_size = sizeof(duk_breakpoint) * (heap->dbg_breakpoint_count - breakpoint_index - 1); - duk_memmove((void *) b, (const void *) (b + 1), (size_t) move_size); - - heap->dbg_breakpoint_count--; - heap->dbg_breakpoints_active[0] = (duk_breakpoint *) NULL; - - DUK_HSTRING_DECREF(thr, h); /* side effects */ - DUK_UNREF(h); /* w/o refcounting */ - - /* Breakpoint entries above the used area are left as garbage. */ - - return 1; -} - -/* - * Misc state management - */ - -DUK_INTERNAL duk_bool_t duk_debug_is_attached(duk_heap *heap) { - return (heap->dbg_read_cb != NULL); -} - -DUK_INTERNAL duk_bool_t duk_debug_is_paused(duk_heap *heap) { - return (DUK_HEAP_HAS_DEBUGGER_PAUSED(heap) != 0); -} - -DUK_INTERNAL void duk_debug_set_paused(duk_heap *heap) { - if (duk_debug_is_paused(heap)) { - DUK_D(DUK_DPRINT("trying to set paused state when already paused, ignoring")); - } else { - DUK_HEAP_SET_DEBUGGER_PAUSED(heap); - heap->dbg_state_dirty = 1; - duk_debug_clear_pause_state(heap); - DUK_ASSERT(heap->ms_running == 0); /* debugger can't be triggered within mark-and-sweep */ - heap->ms_running = 2; /* prevent mark-and-sweep, prevent refzero queueing */ - heap->ms_prevent_count++; - DUK_ASSERT(heap->ms_prevent_count != 0); /* Wrap. */ - DUK_ASSERT(heap->heap_thread != NULL); - } -} - -DUK_INTERNAL void duk_debug_clear_paused(duk_heap *heap) { - if (duk_debug_is_paused(heap)) { - DUK_HEAP_CLEAR_DEBUGGER_PAUSED(heap); - heap->dbg_state_dirty = 1; - duk_debug_clear_pause_state(heap); - DUK_ASSERT(heap->ms_running == 2); - DUK_ASSERT(heap->ms_prevent_count > 0); - heap->ms_prevent_count--; - heap->ms_running = 0; - DUK_ASSERT(heap->heap_thread != NULL); - } else { - DUK_D(DUK_DPRINT("trying to clear paused state when not paused, ignoring")); - } -} - -DUK_INTERNAL void duk_debug_clear_pause_state(duk_heap *heap) { - heap->dbg_pause_flags = 0; - heap->dbg_pause_act = NULL; - heap->dbg_pause_startline = 0; -} - -#else /* DUK_USE_DEBUGGER_SUPPORT */ - -/* No debugger support. */ - -#endif /* DUK_USE_DEBUGGER_SUPPORT */ - -/* automatic undefs */ -#undef DUK__DBG_TPORT_ENTER -#undef DUK__DBG_TPORT_EXIT -#undef DUK__SET_CONN_BROKEN -#line 1 "duk_error_augment.c" -/* - * Augmenting errors at their creation site and their throw site. - * - * When errors are created, traceback data is added by built-in code - * and a user error handler (if defined) can process or replace the - * error. Similarly, when errors are thrown, a user error handler - * (if defined) can process or replace the error. - * - * Augmentation and other processing at error creation time is nice - * because an error is only created once, but it may be thrown and - * rethrown multiple times. User error handler registered for processing - * an error at its throw site must be careful to handle rethrowing in - * a useful manner. - * - * Error augmentation may throw an internal error (e.g. alloc error). - * - * ECMAScript allows throwing any values, so all values cannot be - * augmented. Currently, the built-in augmentation at error creation - * only augments error values which are Error instances (= have the - * built-in Error.prototype in their prototype chain) and are also - * extensible. User error handlers have no limitations in this respect. - */ - -/* #include duk_internal.h -> already included */ - -/* - * Helper for calling a user error handler. - * - * 'thr' must be the currently active thread; the error handler is called - * in its context. The valstack of 'thr' must have the error value on - * top, and will be replaced by another error value based on the return - * value of the error handler. - * - * The helper calls duk_handle_call() recursively in protected mode. - * Before that call happens, no longjmps should happen; as a consequence, - * we must assume that the valstack contains enough temporary space for - * arguments and such. - * - * While the error handler runs, any errors thrown will not trigger a - * recursive error handler call (this is implemented using a heap level - * flag which will "follow" through any coroutines resumed inside the - * error handler). If the error handler is not callable or throws an - * error, the resulting error replaces the original error (for Duktape - * internal errors, duk_error_throw.c further substitutes this error with - * a DoubleError which is not ideal). This would be easy to change and - * even signal to the caller. - * - * The user error handler is stored in 'Duktape.errCreate' or - * 'Duktape.errThrow' depending on whether we're augmenting the error at - * creation or throw time. There are several alternatives to this approach, - * see doc/error-objects.rst for discussion. - * - * Note: since further longjmp()s may occur while calling the error handler - * (for many reasons, e.g. a labeled 'break' inside the handler), the - * caller can make no assumptions on the thr->heap->lj state after the - * call (this affects especially duk_error_throw.c). This is not an issue - * as long as the caller writes to the lj state only after the error handler - * finishes. - */ - -#if defined(DUK_USE_ERRTHROW) || defined(DUK_USE_ERRCREATE) -DUK_LOCAL void duk__err_augment_user(duk_hthread *thr, duk_small_uint_t stridx_cb) { - duk_tval *tv_hnd; - duk_int_t rc; - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(thr->heap != NULL); - DUK_ASSERT_STRIDX_VALID(stridx_cb); - - if (thr->heap->augmenting_error) { - DUK_D(DUK_DPRINT("recursive call to error augmentation, ignore")); - return; - } - - /* - * Check whether or not we have an error handler. - * - * We must be careful of not triggering an error when looking up the - * property. For instance, if the property is a getter, we don't want - * to call it, only plain values are allowed. The value, if it exists, - * is not checked. If the value is not a function, a TypeError happens - * when it is called and that error replaces the original one. - */ - - DUK_ASSERT_VALSTACK_SPACE(thr, 4); /* 3 entries actually needed below */ - - /* [ ... errval ] */ - - if (thr->builtins[DUK_BIDX_DUKTAPE] == NULL) { - /* When creating built-ins, some of the built-ins may not be set - * and we want to tolerate that when throwing errors. - */ - DUK_DD(DUK_DDPRINT("error occurred when DUK_BIDX_DUKTAPE is NULL, ignoring")); - return; - } - tv_hnd = duk_hobject_find_entry_tval_ptr_stridx(thr->heap, thr->builtins[DUK_BIDX_DUKTAPE], stridx_cb); - if (tv_hnd == NULL) { - DUK_DD(DUK_DDPRINT("error handler does not exist or is not a plain value: %!T", (duk_tval *) tv_hnd)); - return; - } - DUK_DDD(DUK_DDDPRINT("error handler dump (callability not checked): %!T", (duk_tval *) tv_hnd)); - duk_push_tval(thr, tv_hnd); - - /* [ ... errval errhandler ] */ - - duk_insert(thr, -2); /* -> [ ... errhandler errval ] */ - duk_push_undefined(thr); - duk_insert(thr, -2); /* -> [ ... errhandler undefined(= this) errval ] */ - - /* [ ... errhandler undefined errval ] */ - - /* - * heap->augmenting_error prevents recursive re-entry and also causes - * call handling to use a larger (but not unbounded) call stack limit - * for the duration of error augmentation. - * - * We ignore errors now: a success return and an error value both - * replace the original error value. (This would be easy to change.) - */ - - DUK_ASSERT(thr->heap->augmenting_error == 0); - thr->heap->augmenting_error = 1; - - rc = duk_pcall_method(thr, 1); - DUK_UNREF(rc); /* no need to check now: both success and error are OK */ - - DUK_ASSERT(thr->heap->augmenting_error == 1); - thr->heap->augmenting_error = 0; - - /* [ ... errval ] */ -} -#endif /* DUK_USE_ERRTHROW || DUK_USE_ERRCREATE */ - -/* - * Add ._Tracedata to an error on the stack top. - */ - -#if defined(DUK_USE_TRACEBACKS) -DUK_LOCAL void duk__add_traceback(duk_hthread *thr, - duk_hthread *thr_callstack, - const char *c_filename, - duk_int_t c_line, - duk_small_uint_t flags) { - duk_activation *act; - duk_int_t depth; - duk_int_t arr_size; - duk_tval *tv; - duk_hstring *s; - duk_uint32_t u32; - duk_double_t d; - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(thr_callstack != NULL); - - /* [ ... error ] */ - - /* - * The traceback format is pretty arcane in an attempt to keep it compact - * and cheap to create. It may change arbitrarily from version to version. - * It should be decoded/accessed through version specific accessors only. - * - * See doc/error-objects.rst. - */ - - DUK_DDD(DUK_DDDPRINT("adding traceback to object: %!T", (duk_tval *) duk_get_tval(thr, -1))); - - /* Preallocate array to correct size, so that we can just write out - * the _Tracedata values into the array part. - */ - act = thr->callstack_curr; - depth = DUK_USE_TRACEBACK_DEPTH; - DUK_ASSERT(thr_callstack->callstack_top <= DUK_INT_MAX); /* callstack limits */ - if (depth > (duk_int_t) thr_callstack->callstack_top) { - depth = (duk_int_t) thr_callstack->callstack_top; - } - if (depth > 0) { - if (flags & DUK_AUGMENT_FLAG_SKIP_ONE) { - DUK_ASSERT(act != NULL); - act = act->parent; - depth--; - } - } - arr_size = depth * 2; - if (thr->compile_ctx != NULL && thr->compile_ctx->h_filename != NULL) { - arr_size += 2; - } - if (c_filename) { - /* We need the C filename to be interned before getting the - * array part pointer to avoid any GC interference while the - * array part is populated. - */ - duk_push_string(thr, c_filename); - arr_size += 2; - } - - /* XXX: Uninitialized would be OK. Maybe add internal primitive to - * push bare duk_harray with size? - */ - DUK_D(DUK_DPRINT("preallocated _Tracedata to %ld items", (long) arr_size)); - tv = duk_push_harray_with_size_outptr(thr, (duk_uint32_t) arr_size); - duk_clear_prototype(thr, -1); - DUK_ASSERT(duk_is_bare_object(thr, -1)); - DUK_ASSERT(arr_size == 0 || tv != NULL); - - /* Compiler SyntaxErrors (and other errors) come first, and are - * blamed by default (not flagged "noblame"). - */ - if (thr->compile_ctx != NULL && thr->compile_ctx->h_filename != NULL) { - s = thr->compile_ctx->h_filename; - DUK_TVAL_SET_STRING(tv, s); - DUK_HSTRING_INCREF(thr, s); - tv++; - - u32 = (duk_uint32_t) thr->compile_ctx->curr_token.start_line; /* (flags<<32) + (line), flags = 0 */ - DUK_TVAL_SET_U32(tv, u32); - tv++; - } - - /* Filename/line from C macros (__FILE__, __LINE__) are added as an - * entry with a special format: (string, number). The number contains - * the line and flags. - */ - - /* [ ... error c_filename? arr ] */ - - if (c_filename) { - DUK_ASSERT(DUK_TVAL_IS_STRING(thr->valstack_top - 2)); - s = DUK_TVAL_GET_STRING(thr->valstack_top - 2); /* interned c_filename */ - DUK_ASSERT(s != NULL); - DUK_TVAL_SET_STRING(tv, s); - DUK_HSTRING_INCREF(thr, s); - tv++; - - d = ((flags & DUK_AUGMENT_FLAG_NOBLAME_FILELINE) ? - ((duk_double_t) DUK_TB_FLAG_NOBLAME_FILELINE) * DUK_DOUBLE_2TO32 : - 0.0) + - (duk_double_t) c_line; - DUK_TVAL_SET_DOUBLE(tv, d); - tv++; - } - - /* Traceback depth doesn't take into account the filename/line - * special handling above (intentional). - */ - for (; depth-- > 0; act = act->parent) { - duk_uint32_t pc; - duk_tval *tv_src; - - /* [... arr] */ - - DUK_ASSERT(act != NULL); /* depth check above, assumes book-keeping is correct */ - DUK_ASSERT_DISABLE(act->pc >= 0); /* unsigned */ - - /* Add function object. */ - tv_src = &act->tv_func; /* object (function) or lightfunc */ - DUK_ASSERT(DUK_TVAL_IS_OBJECT(tv_src) || DUK_TVAL_IS_LIGHTFUNC(tv_src)); - DUK_TVAL_SET_TVAL(tv, tv_src); - DUK_TVAL_INCREF(thr, tv); - tv++; - - /* Add a number containing: pc, activation flags. - * - * PC points to next instruction, find offending PC. Note that - * PC == 0 for native code. - */ - pc = (duk_uint32_t) duk_hthread_get_act_prev_pc(thr_callstack, act); - DUK_ASSERT_DISABLE(pc >= 0); /* unsigned */ - DUK_ASSERT((duk_double_t) pc < DUK_DOUBLE_2TO32); /* assume PC is at most 32 bits and non-negative */ - d = ((duk_double_t) act->flags) * DUK_DOUBLE_2TO32 + (duk_double_t) pc; - DUK_TVAL_SET_DOUBLE(tv, d); - tv++; - } - -#if defined(DUK_USE_ASSERTIONS) - { - duk_harray *a; - a = (duk_harray *) duk_known_hobject(thr, -1); - DUK_ASSERT(a != NULL); - DUK_ASSERT((duk_uint32_t) (tv - DUK_HOBJECT_A_GET_BASE(thr->heap, (duk_hobject *) a)) == a->length); - DUK_ASSERT(a->length == (duk_uint32_t) arr_size); - DUK_ASSERT(duk_is_bare_object(thr, -1)); - } -#endif - - /* [ ... error c_filename? arr ] */ - - if (c_filename) { - duk_remove_m2(thr); - } - - /* [ ... error arr ] */ - - duk_xdef_prop_stridx_short_wec(thr, -2, DUK_STRIDX_INT_TRACEDATA); /* -> [ ... error ] */ -} -#endif /* DUK_USE_TRACEBACKS */ - -/* - * Add .fileName and .lineNumber to an error on the stack top. - */ - -#if defined(DUK_USE_AUGMENT_ERROR_CREATE) && !defined(DUK_USE_TRACEBACKS) -DUK_LOCAL void duk__add_fileline(duk_hthread *thr, - duk_hthread *thr_callstack, - const char *c_filename, - duk_int_t c_line, - duk_small_uint_t flags) { -#if defined(DUK_USE_ASSERTIONS) - duk_int_t entry_top; -#endif - -#if defined(DUK_USE_ASSERTIONS) - entry_top = duk_get_top(thr); -#endif - - /* - * If tracebacks are disabled, 'fileName' and 'lineNumber' are added - * as plain own properties. Since Error.prototype has accessors of - * the same name, we need to define own properties directly (cannot - * just use e.g. duk_put_prop_stridx). Existing properties are not - * overwritten in case they already exist. - */ - - if (thr->compile_ctx != NULL && thr->compile_ctx->h_filename != NULL) { - /* Compiler SyntaxError (or other error) gets the primary blame. - * Currently no flag to prevent blaming. - */ - duk_push_uint(thr, (duk_uint_t) thr->compile_ctx->curr_token.start_line); - duk_push_hstring(thr, thr->compile_ctx->h_filename); - } else if (c_filename && (flags & DUK_AUGMENT_FLAG_NOBLAME_FILELINE) == 0) { - /* C call site gets blamed next, unless flagged not to do so. - * XXX: file/line is disabled in minimal builds, so disable this - * too when appropriate. - */ - duk_push_int(thr, c_line); - duk_push_string(thr, c_filename); - } else { - /* Finally, blame the innermost callstack entry which has a - * .fileName property. - */ - duk_small_uint_t depth; - duk_uint32_t ecma_line; - duk_activation *act; - - DUK_ASSERT(thr_callstack->callstack_top <= DUK_INT_MAX); /* callstack limits */ - depth = DUK_USE_TRACEBACK_DEPTH; - if (depth > thr_callstack->callstack_top) { - depth = thr_callstack->callstack_top; - } - for (act = thr_callstack->callstack_curr; depth-- > 0; act = act->parent) { - duk_hobject *func; - duk_uint32_t pc; - - DUK_ASSERT(act != NULL); - func = DUK_ACT_GET_FUNC(act); - if (func == NULL) { - /* Lightfunc, not blamed now. */ - continue; - } - - /* PC points to next instruction, find offending PC, - * PC == 0 for native code. - */ - pc = duk_hthread_get_act_prev_pc( - thr, - act); /* thr argument only used for thr->heap, so specific thread doesn't matter */ - DUK_UNREF(pc); - DUK_ASSERT_DISABLE(pc >= 0); /* unsigned */ - DUK_ASSERT((duk_double_t) pc < DUK_DOUBLE_2TO32); /* assume PC is at most 32 bits and non-negative */ - - duk_push_hobject(thr, func); - - /* [ ... error func ] */ - - duk_get_prop_stridx_short(thr, -1, DUK_STRIDX_FILE_NAME); - if (!duk_is_string_notsymbol(thr, -1)) { - duk_pop_2(thr); - continue; - } - - /* [ ... error func fileName ] */ - - ecma_line = 0; -#if defined(DUK_USE_PC2LINE) - if (DUK_HOBJECT_IS_COMPFUNC(func)) { - ecma_line = duk_hobject_pc2line_query(thr, -2, (duk_uint_fast32_t) pc); - } else { - /* Native function, no relevant lineNumber. */ - } -#endif /* DUK_USE_PC2LINE */ - duk_push_u32(thr, ecma_line); - - /* [ ... error func fileName lineNumber ] */ - - duk_replace(thr, -3); - - /* [ ... error lineNumber fileName ] */ - goto define_props; - } - - /* No activation matches, use undefined for both .fileName and - * .lineNumber (matches what we do with a _Tracedata based - * no-match lookup. - */ - duk_push_undefined(thr); - duk_push_undefined(thr); - } - -define_props: - /* [ ... error lineNumber fileName ] */ -#if defined(DUK_USE_ASSERTIONS) - DUK_ASSERT(duk_get_top(thr) == entry_top + 2); -#endif - duk_xdef_prop_stridx_short(thr, -3, DUK_STRIDX_FILE_NAME, DUK_PROPDESC_FLAGS_C | DUK_PROPDESC_FLAG_NO_OVERWRITE); - duk_xdef_prop_stridx_short(thr, -2, DUK_STRIDX_LINE_NUMBER, DUK_PROPDESC_FLAGS_C | DUK_PROPDESC_FLAG_NO_OVERWRITE); -} -#endif /* DUK_USE_AUGMENT_ERROR_CREATE && !DUK_USE_TRACEBACKS */ - -/* - * Add line number to a compiler error. - */ - -#if defined(DUK_USE_AUGMENT_ERROR_CREATE) -DUK_LOCAL void duk__add_compiler_error_line(duk_hthread *thr) { - /* Append a "(line NNN)" to the "message" property of any error - * thrown during compilation. Usually compilation errors are - * SyntaxErrors but they can also be out-of-memory errors and - * the like. - */ - - /* [ ... error ] */ - - DUK_ASSERT(duk_is_object(thr, -1)); - - if (!(thr->compile_ctx != NULL && thr->compile_ctx->h_filename != NULL)) { - return; - } - - DUK_DDD(DUK_DDDPRINT("compile error, before adding line info: %!T", (duk_tval *) duk_get_tval(thr, -1))); - - if (duk_get_prop_stridx_short(thr, -1, DUK_STRIDX_MESSAGE)) { - duk_bool_t at_end; - - /* Best guesstimate that error occurred at end of input, token - * truncated by end of input, etc. - */ -#if 0 - at_end = (thr->compile_ctx->curr_token.start_offset + 1 >= thr->compile_ctx->lex.input_length); - at_end = (thr->compile_ctx->lex.window[0].codepoint < 0 || thr->compile_ctx->lex.window[1].codepoint < 0); -#endif - at_end = (thr->compile_ctx->lex.window[0].codepoint < 0); - - DUK_D(DUK_DPRINT("syntax error, determined at_end=%ld; curr_token.start_offset=%ld, " - "lex.input_length=%ld, window[0].codepoint=%ld, window[1].codepoint=%ld", - (long) at_end, - (long) thr->compile_ctx->curr_token.start_offset, - (long) thr->compile_ctx->lex.input_length, - (long) thr->compile_ctx->lex.window[0].codepoint, - (long) thr->compile_ctx->lex.window[1].codepoint)); - - duk_push_sprintf(thr, - " (line %ld%s)", - (long) thr->compile_ctx->curr_token.start_line, - at_end ? ", end of input" : ""); - duk_concat(thr, 2); - duk_put_prop_stridx_short(thr, -2, DUK_STRIDX_MESSAGE); - } else { - duk_pop(thr); - } - - DUK_DDD(DUK_DDDPRINT("compile error, after adding line info: %!T", (duk_tval *) duk_get_tval(thr, -1))); -} -#endif /* DUK_USE_AUGMENT_ERROR_CREATE */ - -/* - * Augment an error being created using Duktape specific properties - * like _Tracedata or .fileName/.lineNumber. - */ - -#if defined(DUK_USE_AUGMENT_ERROR_CREATE) -DUK_LOCAL void duk__err_augment_builtin_create(duk_hthread *thr, - duk_hthread *thr_callstack, - const char *c_filename, - duk_int_t c_line, - duk_hobject *obj, - duk_small_uint_t flags) { -#if defined(DUK_USE_ASSERTIONS) - duk_int_t entry_top; -#endif - -#if defined(DUK_USE_ASSERTIONS) - entry_top = duk_get_top(thr); -#endif - DUK_ASSERT(obj != NULL); - - DUK_UNREF(obj); /* unreferenced w/o tracebacks */ - - duk__add_compiler_error_line(thr); - -#if defined(DUK_USE_TRACEBACKS) - /* If tracebacks are enabled, the '_Tracedata' property is the only - * thing we need: 'fileName' and 'lineNumber' are virtual properties - * which use '_Tracedata'. (Check _Tracedata only as own property.) - */ - if (duk_hobject_find_entry_tval_ptr_stridx(thr->heap, obj, DUK_STRIDX_INT_TRACEDATA) != NULL) { - DUK_DDD(DUK_DDDPRINT("error value already has a '_Tracedata' property, not modifying it")); - } else { - duk__add_traceback(thr, thr_callstack, c_filename, c_line, flags); - } -#else - /* Without tracebacks the concrete .fileName and .lineNumber need - * to be added directly. - */ - duk__add_fileline(thr, thr_callstack, c_filename, c_line, flags); -#endif - -#if defined(DUK_USE_ASSERTIONS) - DUK_ASSERT(duk_get_top(thr) == entry_top); -#endif -} -#endif /* DUK_USE_AUGMENT_ERROR_CREATE */ - -/* - * Augment an error at creation time with _Tracedata/fileName/lineNumber - * and allow a user error handler (if defined) to process/replace the error. - * The error to be augmented is at the stack top. - * - * thr: thread containing the error value - * thr_callstack: thread which should be used for generating callstack etc. - * c_filename: C __FILE__ related to the error - * c_line: C __LINE__ related to the error - * flags & DUK_AUGMENT_FLAG_NOBLAME_FILELINE: - * if true, don't fileName/line as error source, otherwise use traceback - * (needed because user code filename/line are reported but internal ones - * are not) - */ - -#if defined(DUK_USE_AUGMENT_ERROR_CREATE) -DUK_INTERNAL void duk_err_augment_error_create(duk_hthread *thr, - duk_hthread *thr_callstack, - const char *c_filename, - duk_int_t c_line, - duk_small_uint_t flags) { - duk_hobject *obj; - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(thr_callstack != NULL); - - /* [ ... error ] */ - - /* - * Criteria for augmenting: - * - * - augmentation enabled in build (naturally) - * - error value internal prototype chain contains the built-in - * Error prototype object (i.e. 'val instanceof Error') - * - * Additional criteria for built-in augmenting: - * - * - error value is an extensible object - */ - - obj = duk_get_hobject(thr, -1); - if (!obj) { - DUK_DDD(DUK_DDDPRINT("value is not an object, skip both built-in and user augment")); - return; - } - if (!duk_hobject_prototype_chain_contains(thr, obj, thr->builtins[DUK_BIDX_ERROR_PROTOTYPE], 1 /*ignore_loop*/)) { - /* If the value has a prototype loop, it's critical not to - * throw here. Instead, assume the value is not to be - * augmented. - */ - DUK_DDD(DUK_DDDPRINT("value is not an error instance, skip both built-in and user augment")); - return; - } - if (DUK_HOBJECT_HAS_EXTENSIBLE(obj)) { - DUK_DDD(DUK_DDDPRINT("error meets criteria, built-in augment")); - duk__err_augment_builtin_create(thr, thr_callstack, c_filename, c_line, obj, flags); - } else { - DUK_DDD(DUK_DDDPRINT("error does not meet criteria, no built-in augment")); - } - - /* [ ... error ] */ - -#if defined(DUK_USE_ERRCREATE) - duk__err_augment_user(thr, DUK_STRIDX_ERR_CREATE); -#endif -} -#endif /* DUK_USE_AUGMENT_ERROR_CREATE */ - -/* - * Augment an error at throw time; allow a user error handler (if defined) - * to process/replace the error. The error to be augmented is at the - * stack top. - */ - -#if defined(DUK_USE_AUGMENT_ERROR_THROW) -DUK_INTERNAL void duk_err_augment_error_throw(duk_hthread *thr) { -#if defined(DUK_USE_ERRTHROW) - duk__err_augment_user(thr, DUK_STRIDX_ERR_THROW); -#endif /* DUK_USE_ERRTHROW */ -} -#endif /* DUK_USE_AUGMENT_ERROR_THROW */ -#line 1 "duk_error_longjmp.c" -/* - * Do a longjmp call, calling the fatal error handler if no - * catchpoint exists. - */ - -/* #include duk_internal.h -> already included */ - -#if defined(DUK_USE_PREFER_SIZE) -DUK_NORETURN(DUK_LOCAL_DECL void duk__uncaught_minimal(duk_hthread *thr)); -DUK_LOCAL void duk__uncaught_minimal(duk_hthread *thr) { - (void) duk_fatal(thr, "uncaught error"); - DUK_WO_NORETURN(return;); -} -#endif - -#if 0 -DUK_NORETURN(DUK_LOCAL_DECL void duk__uncaught_readable(duk_hthread *thr)); -DUK_LOCAL void duk__uncaught_readable(duk_hthread *thr) { - const char *summary; - char buf[DUK_USE_FATAL_MAXLEN]; - - summary = duk_push_string_tval_readable(thr, &thr->heap->lj.value1); - DUK_SNPRINTF(buf, sizeof(buf), "uncaught: %s", summary); - buf[sizeof(buf) - 1] = (char) 0; - (void) duk_fatal(thr, (const char *) buf); - DUK_WO_NORETURN(return;); -} -#endif - -#if !defined(DUK_USE_PREFER_SIZE) -DUK_NORETURN(DUK_LOCAL_DECL void duk__uncaught_error_aware(duk_hthread *thr)); -DUK_LOCAL void duk__uncaught_error_aware(duk_hthread *thr) { - const char *summary; - char buf[DUK_USE_FATAL_MAXLEN]; - - summary = duk_push_string_tval_readable_error(thr, &thr->heap->lj.value1); - DUK_ASSERT(summary != NULL); - DUK_SNPRINTF(buf, sizeof(buf), "uncaught: %s", summary); - buf[sizeof(buf) - 1] = (char) 0; - (void) duk_fatal(thr, (const char *) buf); - DUK_WO_NORETURN(return;); -} -#endif - -DUK_INTERNAL void duk_err_longjmp(duk_hthread *thr) { - DUK_ASSERT(thr != NULL); - DUK_ASSERT(thr->heap != NULL); - - DUK_DD(DUK_DDPRINT("longjmp error: type=%d iserror=%d value1=%!T value2=%!T", - (int) thr->heap->lj.type, - (int) thr->heap->lj.iserror, - &thr->heap->lj.value1, - &thr->heap->lj.value2)); - - /* Prevent finalizer execution during error handling. All error - * handling sites will process pending finalizers once error handling - * is complete and we're ready for the side effects. Does not prevent - * refzero freeing or mark-and-sweep during error handling. - * - * NOTE: when we come here some calling code may have used DECREF - * NORZ macros without an explicit DUK_REFZERO_CHECK_xxx() call. - * We don't want to do it here because it would just check for - * pending finalizers and we prevent that explicitly. Instead, - * the error catcher will run the finalizers once error handling - * is complete. - */ - - DUK_ASSERT_LJSTATE_SET(thr->heap); - - thr->heap->pf_prevent_count++; - DUK_ASSERT(thr->heap->pf_prevent_count != 0); /* Wrap. */ - -#if defined(DUK_USE_ASSERTIONS) - /* XXX: set this immediately when longjmp state is set */ - DUK_ASSERT(thr->heap->error_not_allowed == 0); /* Detect error within critical section. */ - thr->heap->error_not_allowed = 1; -#endif - - DUK_DD(DUK_DDPRINT("about to longjmp, pf_prevent_count=%ld", (long) thr->heap->pf_prevent_count)); - - /* If we don't have a jmpbuf_ptr, there is little we can do except - * cause a fatal error. The caller's expectation is that we never - * return. - */ - if (!thr->heap->lj.jmpbuf_ptr) { - DUK_D(DUK_DPRINT("uncaught error: type=%d iserror=%d value1=%!T value2=%!T", - (int) thr->heap->lj.type, - (int) thr->heap->lj.iserror, - &thr->heap->lj.value1, - &thr->heap->lj.value2)); - -#if defined(DUK_USE_PREFER_SIZE) - duk__uncaught_minimal(thr); -#else - duk__uncaught_error_aware(thr); -#endif - DUK_UNREACHABLE(); - } - -#if defined(DUK_USE_CPP_EXCEPTIONS) - throw duk_internal_exception(); /* dummy */ -#else - DUK_LONGJMP(thr->heap->lj.jmpbuf_ptr->jb); -#endif - - DUK_UNREACHABLE(); -} -#line 1 "duk_error_misc.c" -/* - * Error helpers - */ - -/* #include duk_internal.h -> already included */ - -/* - * Helper to walk the thread chain and see if there is an active error - * catcher. Protected calls or finally blocks aren't considered catching. - */ - -#if defined(DUK_USE_DEBUGGER_SUPPORT) -DUK_LOCAL duk_bool_t duk__have_active_catcher(duk_hthread *thr) { - /* As noted above, a protected API call won't be counted as a - * catcher. This is usually convenient, e.g. in the case of a top- - * level duk_pcall(), but may not always be desirable. Perhaps add - * an argument to treat them as catchers? - */ - - duk_activation *act; - duk_catcher *cat; - - DUK_ASSERT(thr != NULL); - - for (; thr != NULL; thr = thr->resumer) { - for (act = thr->callstack_curr; act != NULL; act = act->parent) { - for (cat = act->cat; cat != NULL; cat = cat->parent) { - if (DUK_CAT_HAS_CATCH_ENABLED(cat)) { - return 1; /* all we need to know */ - } - } - } - } - return 0; -} -#endif /* DUK_USE_DEBUGGER_SUPPORT */ - -/* - * Get prototype object for an integer error code. - */ - -DUK_INTERNAL duk_hobject *duk_error_prototype_from_code(duk_hthread *thr, duk_errcode_t code) { - switch (code) { - case DUK_ERR_EVAL_ERROR: - return thr->builtins[DUK_BIDX_EVAL_ERROR_PROTOTYPE]; - case DUK_ERR_RANGE_ERROR: - return thr->builtins[DUK_BIDX_RANGE_ERROR_PROTOTYPE]; - case DUK_ERR_REFERENCE_ERROR: - return thr->builtins[DUK_BIDX_REFERENCE_ERROR_PROTOTYPE]; - case DUK_ERR_SYNTAX_ERROR: - return thr->builtins[DUK_BIDX_SYNTAX_ERROR_PROTOTYPE]; - case DUK_ERR_TYPE_ERROR: - return thr->builtins[DUK_BIDX_TYPE_ERROR_PROTOTYPE]; - case DUK_ERR_URI_ERROR: - return thr->builtins[DUK_BIDX_URI_ERROR_PROTOTYPE]; - case DUK_ERR_ERROR: - default: - return thr->builtins[DUK_BIDX_ERROR_PROTOTYPE]; - } -} - -/* - * Helper for debugger throw notify and pause-on-uncaught integration. - */ - -#if defined(DUK_USE_DEBUGGER_SUPPORT) -DUK_INTERNAL void duk_err_check_debugger_integration(duk_hthread *thr) { - duk_bool_t uncaught; - duk_tval *tv_obj; - - /* If something is thrown with the debugger attached and nobody will - * catch it, execution is paused before the longjmp, turning over - * control to the debug client. This allows local state to be examined - * before the stack is unwound. Errors are not intercepted when debug - * message loop is active (e.g. for Eval). - */ - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(thr->heap != NULL); - - /* XXX: Allow customizing the pause and notify behavior at runtime - * using debugger runtime flags. For now the behavior is fixed using - * config options. - */ - - if (!duk_debug_is_attached(thr->heap) || thr->heap->dbg_processing || thr->heap->lj.type != DUK_LJ_TYPE_THROW || - thr->heap->creating_error) { - DUK_D(DUK_DPRINT("skip debugger error integration; not attached, debugger processing, not THROW, or error thrown " - "while creating error")); - return; - } - - /* Don't intercept a DoubleError, we may have caused the initial double - * fault and attempting to intercept it will cause us to be called - * recursively and exhaust the C stack. (This should no longer happen - * for the initial throw because DoubleError path doesn't do a debugger - * integration check, but it might happen for rethrows.) - */ - tv_obj = &thr->heap->lj.value1; - if (DUK_TVAL_IS_OBJECT(tv_obj) && DUK_TVAL_GET_OBJECT(tv_obj) == thr->builtins[DUK_BIDX_DOUBLE_ERROR]) { - DUK_D(DUK_DPRINT("built-in DoubleError instance (re)thrown, not intercepting")); - return; - } - - uncaught = !duk__have_active_catcher(thr); - - /* Debugger code expects the value at stack top. This also serves - * as a backup: we need to store/restore the longjmp state because - * when the debugger is paused Eval commands may be executed and - * they can arbitrarily clobber the longjmp state. - */ - duk_push_tval(thr, tv_obj); - - /* Store and reset longjmp state. */ - DUK_ASSERT_LJSTATE_SET(thr->heap); - DUK_TVAL_DECREF_NORZ(thr, tv_obj); - DUK_ASSERT(DUK_TVAL_IS_UNDEFINED(&thr->heap->lj.value2)); /* Always for THROW type. */ - DUK_TVAL_SET_UNDEFINED(tv_obj); - thr->heap->lj.type = DUK_LJ_TYPE_UNKNOWN; - DUK_ASSERT_LJSTATE_UNSET(thr->heap); - -#if defined(DUK_USE_DEBUGGER_THROW_NOTIFY) - /* Report it to the debug client */ - DUK_D(DUK_DPRINT("throw with debugger attached, report to client")); - duk_debug_send_throw(thr, uncaught); -#endif - - if (uncaught) { - if (thr->heap->dbg_pause_flags & DUK_PAUSE_FLAG_UNCAUGHT_ERROR) { - DUK_D(DUK_DPRINT("PAUSE TRIGGERED by uncaught error")); - duk_debug_halt_execution(thr, 1 /*use_prev_pc*/); - } - } else { - if (thr->heap->dbg_pause_flags & DUK_PAUSE_FLAG_CAUGHT_ERROR) { - DUK_D(DUK_DPRINT("PAUSE TRIGGERED by caught error")); - duk_debug_halt_execution(thr, 1 /*use_prev_pc*/); - } - } - - /* Restore longjmp state. */ - DUK_ASSERT_LJSTATE_UNSET(thr->heap); - thr->heap->lj.type = DUK_LJ_TYPE_THROW; - tv_obj = DUK_GET_TVAL_NEGIDX(thr, -1); - DUK_ASSERT(DUK_TVAL_IS_UNDEFINED(&thr->heap->lj.value1)); - DUK_ASSERT(DUK_TVAL_IS_UNDEFINED(&thr->heap->lj.value2)); - DUK_TVAL_SET_TVAL(&thr->heap->lj.value1, tv_obj); - DUK_TVAL_INCREF(thr, tv_obj); - DUK_ASSERT_LJSTATE_SET(thr->heap); - - duk_pop(thr); -} -#endif /* DUK_USE_DEBUGGER_SUPPORT */ - -/* - * Helpers for setting up heap longjmp state. - */ - -DUK_INTERNAL void duk_err_setup_ljstate1(duk_hthread *thr, duk_small_uint_t lj_type, duk_tval *tv_val) { - duk_heap *heap; - - DUK_ASSERT(thr != NULL); - heap = thr->heap; - DUK_ASSERT(heap != NULL); - DUK_ASSERT(tv_val != NULL); - - DUK_ASSERT_LJSTATE_UNSET(heap); - - heap->lj.type = lj_type; - DUK_TVAL_SET_TVAL(&heap->lj.value1, tv_val); - DUK_TVAL_INCREF(thr, tv_val); - - DUK_ASSERT_LJSTATE_SET(heap); -} -#line 1 "duk_error_throw.c" -/* - * Create and throw an ECMAScript error object based on a code and a message. - * - * Used when we throw errors internally. ECMAScript generated error objects - * are created by ECMAScript code, and the throwing is handled by the bytecode - * executor. - */ - -/* #include duk_internal.h -> already included */ - -/* - * Create and throw an error (originating from Duktape internally) - * - * Push an error object on top of the stack, possibly throw augmenting - * the error, and finally longjmp. - * - * If an error occurs while we're dealing with the current error, we might - * enter an infinite recursion loop. This is prevented by detecting a - * "double fault" through the heap->creating_error flag; the recursion - * then stops at the second level. - */ - -#if defined(DUK_USE_VERBOSE_ERRORS) -DUK_INTERNAL void duk_err_create_and_throw(duk_hthread *thr, - duk_errcode_t code, - const char *msg, - const char *filename, - duk_int_t line) { -#else -DUK_INTERNAL void duk_err_create_and_throw(duk_hthread *thr, duk_errcode_t code) { -#endif -#if defined(DUK_USE_VERBOSE_ERRORS) - DUK_DD(DUK_DDPRINT("duk_err_create_and_throw(): code=%ld, msg=%s, filename=%s, line=%ld", - (long) code, - (const char *) msg, - (const char *) filename, - (long) line)); -#else - DUK_DD(DUK_DDPRINT("duk_err_create_and_throw(): code=%ld", (long) code)); -#endif - - DUK_ASSERT(thr != NULL); - - /* Even though nested call is possible because we throw an error when - * trying to create an error, the potential errors must happen before - * the longjmp state is configured. - */ - DUK_ASSERT_LJSTATE_UNSET(thr->heap); - - /* Sync so that augmentation sees up-to-date activations, NULL - * thr->ptr_curr_pc so that it's not used if side effects occur - * in augmentation or longjmp handling. - */ - duk_hthread_sync_and_null_currpc(thr); - - /* - * Create and push an error object onto the top of stack. - * The error is potentially augmented before throwing. - * - * If a "double error" occurs, use a fixed error instance - * to avoid further trouble. - */ - - if (thr->heap->creating_error) { - duk_tval tv_val; - duk_hobject *h_err; - - thr->heap->creating_error = 0; - - h_err = thr->builtins[DUK_BIDX_DOUBLE_ERROR]; - if (h_err != NULL) { - DUK_D(DUK_DPRINT("double fault detected -> use built-in fixed 'double error' instance")); - DUK_TVAL_SET_OBJECT(&tv_val, h_err); - } else { - DUK_D(DUK_DPRINT("double fault detected; there is no built-in fixed 'double error' instance " - "-> use the error code as a number")); - DUK_TVAL_SET_I32(&tv_val, (duk_int32_t) code); - } - - duk_err_setup_ljstate1(thr, DUK_LJ_TYPE_THROW, &tv_val); - - /* No augmentation to avoid any allocations or side effects. */ - } else { - /* Prevent infinite recursion. Extra call stack and C - * recursion headroom (see GH-191) is added for augmentation. - * That is now signalled by heap->augmenting error and taken - * into account in call handling without an explicit limit bump. - */ - thr->heap->creating_error = 1; - - duk_require_stack(thr, 1); - - /* XXX: usually unnecessary '%s' formatting here, but cannot - * use 'msg' as a format string directly. - */ -#if defined(DUK_USE_VERBOSE_ERRORS) - duk_push_error_object_raw(thr, code | DUK_ERRCODE_FLAG_NOBLAME_FILELINE, filename, line, "%s", (const char *) msg); -#else - duk_push_error_object_raw(thr, code | DUK_ERRCODE_FLAG_NOBLAME_FILELINE, NULL, 0, NULL); -#endif - - /* Note that an alloc error may happen during error augmentation. - * This may happen both when the original error is an alloc error - * and when it's something else. Because any error in augmentation - * must be handled correctly anyway, there's no special check for - * avoiding it for alloc errors (this differs from Duktape 1.x). - */ -#if defined(DUK_USE_AUGMENT_ERROR_THROW) - DUK_DDD(DUK_DDDPRINT("THROW ERROR (INTERNAL): %!iT (before throw augment)", (duk_tval *) duk_get_tval(thr, -1))); - duk_err_augment_error_throw(thr); -#endif - - duk_err_setup_ljstate1(thr, DUK_LJ_TYPE_THROW, DUK_GET_TVAL_NEGIDX(thr, -1)); - thr->heap->creating_error = 0; - - /* Error is now created and we assume no errors can occur any - * more. Check for debugger Throw integration only when the - * error is complete. If we enter debugger message loop, - * creating_error must be 0 so that errors can be thrown in - * the paused state, e.g. in Eval commands. - */ -#if defined(DUK_USE_DEBUGGER_SUPPORT) - duk_err_check_debugger_integration(thr); -#endif - } - - /* - * Finally, longjmp - */ - - DUK_DDD(DUK_DDDPRINT("THROW ERROR (INTERNAL): %!iT, %!iT (after throw augment)", - (duk_tval *) &thr->heap->lj.value1, - (duk_tval *) &thr->heap->lj.value2)); - - duk_err_longjmp(thr); - DUK_UNREACHABLE(); -} - -/* - * Helper for C function call negative return values. - */ - -DUK_INTERNAL void duk_error_throw_from_negative_rc(duk_hthread *thr, duk_ret_t rc) { - DUK_ASSERT(thr != NULL); - DUK_ASSERT(rc < 0); - - /* - * The __FILE__ and __LINE__ information is intentionally not used in the - * creation of the error object, as it isn't useful in the tracedata. The - * tracedata still contains the function which returned the negative return - * code, and having the file/line of this function isn't very useful. - * - * The error messages for DUK_RET_xxx shorthand are intentionally very - * minimal: they're only really useful for low memory targets. - */ - - duk_error_raw(thr, -rc, NULL, 0, "error (rc %ld)", (long) rc); - DUK_WO_NORETURN(return;); -} -#line 1 "duk_hbuffer_alloc.c" -/* - * duk_hbuffer allocation and freeing. - */ - -/* #include duk_internal.h -> already included */ - -/* Allocate a new duk_hbuffer of a certain type and return a pointer to it - * (NULL on error). Write buffer data pointer to 'out_bufdata' (only if - * allocation successful). - */ -DUK_INTERNAL duk_hbuffer *duk_hbuffer_alloc(duk_heap *heap, duk_size_t size, duk_small_uint_t flags, void **out_bufdata) { - duk_hbuffer *res = NULL; - duk_size_t header_size; - duk_size_t alloc_size; - - DUK_ASSERT(heap != NULL); - DUK_ASSERT(out_bufdata != NULL); - - DUK_DDD(DUK_DDDPRINT("allocate hbuffer")); - - /* Size sanity check. Should not be necessary because caller is - * required to check this, but we don't want to cause a segfault - * if the size wraps either in duk_size_t computation or when - * storing the size in a 16-bit field. - */ - if (size > DUK_HBUFFER_MAX_BYTELEN) { - DUK_D(DUK_DPRINT("hbuffer alloc failed: size too large: %ld", (long) size)); - return NULL; /* no need to write 'out_bufdata' */ - } - - if (flags & DUK_BUF_FLAG_EXTERNAL) { - header_size = sizeof(duk_hbuffer_external); - alloc_size = sizeof(duk_hbuffer_external); - } else if (flags & DUK_BUF_FLAG_DYNAMIC) { - header_size = sizeof(duk_hbuffer_dynamic); - alloc_size = sizeof(duk_hbuffer_dynamic); - } else { - header_size = sizeof(duk_hbuffer_fixed); - alloc_size = sizeof(duk_hbuffer_fixed) + size; - DUK_ASSERT(alloc_size >= sizeof(duk_hbuffer_fixed)); /* no wrapping */ - } - - res = (duk_hbuffer *) DUK_ALLOC(heap, alloc_size); - if (DUK_UNLIKELY(res == NULL)) { - goto alloc_error; - } - - /* zero everything unless requested not to do so */ -#if defined(DUK_USE_ZERO_BUFFER_DATA) - duk_memzero((void *) res, (flags & DUK_BUF_FLAG_NOZERO) ? header_size : alloc_size); -#else - duk_memzero((void *) res, header_size); -#endif - - if (flags & DUK_BUF_FLAG_EXTERNAL) { - duk_hbuffer_external *h; - h = (duk_hbuffer_external *) res; - DUK_UNREF(h); - *out_bufdata = NULL; -#if defined(DUK_USE_EXPLICIT_NULL_INIT) -#if defined(DUK_USE_HEAPPTR16) -/* the compressed pointer is zeroed which maps to NULL, so nothing to do. */ -#else - DUK_HBUFFER_EXTERNAL_SET_DATA_PTR(heap, h, NULL); -#endif -#endif - DUK_ASSERT(DUK_HBUFFER_EXTERNAL_GET_DATA_PTR(heap, h) == NULL); - } else if (flags & DUK_BUF_FLAG_DYNAMIC) { - duk_hbuffer_dynamic *h = (duk_hbuffer_dynamic *) res; - void *ptr; - - if (size > 0) { - DUK_ASSERT(!(flags & DUK_BUF_FLAG_EXTERNAL)); /* alloc external with size zero */ - DUK_DDD(DUK_DDDPRINT("dynamic buffer with nonzero size, alloc actual buffer")); -#if defined(DUK_USE_ZERO_BUFFER_DATA) - ptr = DUK_ALLOC_ZEROED(heap, size); -#else - ptr = DUK_ALLOC(heap, size); -#endif - if (DUK_UNLIKELY(ptr == NULL)) { - /* Because size > 0, NULL check is correct */ - goto alloc_error; - } - *out_bufdata = ptr; - - DUK_HBUFFER_DYNAMIC_SET_DATA_PTR(heap, h, ptr); - } else { - *out_bufdata = NULL; -#if defined(DUK_USE_EXPLICIT_NULL_INIT) -#if defined(DUK_USE_HEAPPTR16) -/* the compressed pointer is zeroed which maps to NULL, so nothing to do. */ -#else - DUK_HBUFFER_DYNAMIC_SET_DATA_PTR(heap, h, NULL); -#endif -#endif - DUK_ASSERT(DUK_HBUFFER_DYNAMIC_GET_DATA_PTR(heap, h) == NULL); - } - } else { - *out_bufdata = (void *) ((duk_hbuffer_fixed *) (void *) res + 1); - } - - DUK_HBUFFER_SET_SIZE(res, size); - - DUK_HEAPHDR_SET_TYPE(&res->hdr, DUK_HTYPE_BUFFER); - if (flags & DUK_BUF_FLAG_DYNAMIC) { - DUK_HBUFFER_SET_DYNAMIC(res); - if (flags & DUK_BUF_FLAG_EXTERNAL) { - DUK_HBUFFER_SET_EXTERNAL(res); - } - } else { - DUK_ASSERT(!(flags & DUK_BUF_FLAG_EXTERNAL)); - } - DUK_HEAP_INSERT_INTO_HEAP_ALLOCATED(heap, &res->hdr); - - DUK_DDD(DUK_DDDPRINT("allocated hbuffer: %p", (void *) res)); - return res; - -alloc_error: - DUK_DD(DUK_DDPRINT("hbuffer allocation failed")); - - DUK_FREE(heap, res); - return NULL; /* no need to write 'out_bufdata' */ -} - -/* For indirect allocs. */ - -DUK_INTERNAL void *duk_hbuffer_get_dynalloc_ptr(duk_heap *heap, void *ud) { - duk_hbuffer_dynamic *buf = (duk_hbuffer_dynamic *) ud; - DUK_UNREF(heap); - return (void *) DUK_HBUFFER_DYNAMIC_GET_DATA_PTR(heap, buf); -} -#line 1 "duk_hbuffer_assert.c" -/* - * duk_hbuffer assertion helpers - */ - -/* #include duk_internal.h -> already included */ - -#if defined(DUK_USE_ASSERTIONS) - -DUK_INTERNAL void duk_hbuffer_assert_valid(duk_hbuffer *h) { - DUK_ASSERT(h != NULL); -} - -#endif /* DUK_USE_ASSERTIONS */ -#line 1 "duk_hbuffer_ops.c" -/* - * duk_hbuffer operations such as resizing and inserting/appending data to - * a dynamic buffer. - */ - -/* #include duk_internal.h -> already included */ - -/* - * Resizing - */ - -DUK_INTERNAL void duk_hbuffer_resize(duk_hthread *thr, duk_hbuffer_dynamic *buf, duk_size_t new_size) { - void *res; - duk_size_t prev_size; - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(buf != NULL); - DUK_ASSERT(DUK_HBUFFER_HAS_DYNAMIC(buf)); - DUK_ASSERT(!DUK_HBUFFER_HAS_EXTERNAL(buf)); - - /* - * Maximum size check - */ - - if (new_size > DUK_HBUFFER_MAX_BYTELEN) { - DUK_ERROR_RANGE(thr, "buffer too long"); - DUK_WO_NORETURN(return;); - } - - /* - * Note: use indirect realloc variant just in case mark-and-sweep - * (finalizers) might resize this same buffer during garbage - * collection. - */ - - res = DUK_REALLOC_INDIRECT(thr->heap, duk_hbuffer_get_dynalloc_ptr, (void *) buf, new_size); - if (DUK_LIKELY(res != NULL || new_size == 0)) { - /* 'res' may be NULL if new allocation size is 0. */ - - DUK_DDD(DUK_DDDPRINT("resized dynamic buffer %p:%ld -> %p:%ld", - (void *) DUK_HBUFFER_DYNAMIC_GET_DATA_PTR(thr->heap, buf), - (long) DUK_HBUFFER_DYNAMIC_GET_SIZE(buf), - (void *) res, - (long) new_size)); - - /* - * The entire allocated buffer area, regardless of actual used - * size, is kept zeroed in resizes for simplicity. If the buffer - * is grown, zero the new part. - */ - - prev_size = DUK_HBUFFER_DYNAMIC_GET_SIZE(buf); - if (new_size > prev_size) { - DUK_ASSERT(new_size - prev_size > 0); -#if defined(DUK_USE_ZERO_BUFFER_DATA) - duk_memzero((void *) ((char *) res + prev_size), (duk_size_t) (new_size - prev_size)); -#endif - } - - DUK_HBUFFER_DYNAMIC_SET_SIZE(buf, new_size); - DUK_HBUFFER_DYNAMIC_SET_DATA_PTR(thr->heap, buf, res); - } else { - DUK_ERROR_ALLOC_FAILED(thr); - DUK_WO_NORETURN(return;); - } - - DUK_ASSERT(res != NULL || new_size == 0); -} - -DUK_INTERNAL void duk_hbuffer_reset(duk_hthread *thr, duk_hbuffer_dynamic *buf) { - DUK_ASSERT(thr != NULL); - DUK_ASSERT(buf != NULL); - DUK_ASSERT(DUK_HBUFFER_HAS_DYNAMIC(buf)); - DUK_ASSERT(!DUK_HBUFFER_HAS_EXTERNAL(buf)); - - duk_hbuffer_resize(thr, buf, 0); -} -/* #include duk_internal.h -> already included */ -#line 2 "duk_hbufobj_misc.c" - -#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) -DUK_INTERNAL duk_uint_t duk_hbufobj_clamp_bytelength(duk_hbufobj *h_bufobj, duk_uint_t len) { - duk_uint_t buf_size; - duk_uint_t buf_avail; - - DUK_ASSERT(h_bufobj != NULL); - DUK_ASSERT(h_bufobj->buf != NULL); - - buf_size = (duk_uint_t) DUK_HBUFFER_GET_SIZE(h_bufobj->buf); - if (h_bufobj->offset > buf_size) { - /* Slice starting point is beyond current length. */ - return 0; - } - buf_avail = buf_size - h_bufobj->offset; - - return buf_avail >= len ? len : buf_avail; -} -#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ -#line 1 "duk_heap_alloc.c" -/* - * duk_heap allocation and freeing. - */ - -/* #include duk_internal.h -> already included */ - -#if defined(DUK_USE_ROM_STRINGS) -/* Fixed seed value used with ROM strings. */ -#define DUK__FIXED_HASH_SEED 0xabcd1234 -#endif - -/* - * Free a heap object. - * - * Free heap object and its internal (non-heap) pointers. Assumes that - * caller has removed the object from heap allocated list or the string - * intern table, and any weak references (which strings may have) have - * been already dealt with. - */ - -DUK_INTERNAL void duk_free_hobject(duk_heap *heap, duk_hobject *h) { - DUK_ASSERT(heap != NULL); - DUK_ASSERT(h != NULL); - - DUK_FREE(heap, DUK_HOBJECT_GET_PROPS(heap, h)); - - if (DUK_HOBJECT_IS_COMPFUNC(h)) { - duk_hcompfunc *f = (duk_hcompfunc *) h; - DUK_UNREF(f); - /* Currently nothing to free; 'data' is a heap object */ - } else if (DUK_HOBJECT_IS_NATFUNC(h)) { - duk_hnatfunc *f = (duk_hnatfunc *) h; - DUK_UNREF(f); - /* Currently nothing to free */ - } else if (DUK_HOBJECT_IS_THREAD(h)) { - duk_hthread *t = (duk_hthread *) h; - duk_activation *act; - - DUK_FREE(heap, t->valstack); - - /* Don't free h->resumer because it exists in the heap. - * Callstack entries also contain function pointers which - * are not freed for the same reason. They are decref - * finalized and the targets are freed if necessary based - * on their refcount (or reachability). - */ - for (act = t->callstack_curr; act != NULL;) { - duk_activation *act_next; - duk_catcher *cat; - - for (cat = act->cat; cat != NULL;) { - duk_catcher *cat_next; - - cat_next = cat->parent; - DUK_FREE(heap, (void *) cat); - cat = cat_next; - } - - act_next = act->parent; - DUK_FREE(heap, (void *) act); - act = act_next; - } - - /* XXX: with 'caller' property the callstack would need - * to be unwound to update the 'caller' properties of - * functions in the callstack. - */ - } else if (DUK_HOBJECT_IS_BOUNDFUNC(h)) { - duk_hboundfunc *f = (duk_hboundfunc *) (void *) h; - - DUK_FREE(heap, f->args); - } - - DUK_FREE(heap, (void *) h); -} - -DUK_INTERNAL void duk_free_hbuffer(duk_heap *heap, duk_hbuffer *h) { - DUK_ASSERT(heap != NULL); - DUK_ASSERT(h != NULL); - - if (DUK_HBUFFER_HAS_DYNAMIC(h) && !DUK_HBUFFER_HAS_EXTERNAL(h)) { - duk_hbuffer_dynamic *g = (duk_hbuffer_dynamic *) h; - DUK_DDD(DUK_DDDPRINT("free dynamic buffer %p", (void *) DUK_HBUFFER_DYNAMIC_GET_DATA_PTR(heap, g))); - DUK_FREE(heap, DUK_HBUFFER_DYNAMIC_GET_DATA_PTR(heap, g)); - } - DUK_FREE(heap, (void *) h); -} - -DUK_INTERNAL void duk_free_hstring(duk_heap *heap, duk_hstring *h) { - DUK_ASSERT(heap != NULL); - DUK_ASSERT(h != NULL); - - DUK_UNREF(heap); - DUK_UNREF(h); - -#if defined(DUK_USE_HSTRING_EXTDATA) && defined(DUK_USE_EXTSTR_FREE) - if (DUK_HSTRING_HAS_EXTDATA(h)) { - DUK_DDD( - DUK_DDDPRINT("free extstr: hstring %!O, extdata: %p", h, DUK_HSTRING_GET_EXTDATA((duk_hstring_external *) h))); - DUK_USE_EXTSTR_FREE(heap->heap_udata, (const void *) DUK_HSTRING_GET_EXTDATA((duk_hstring_external *) h)); - } -#endif - DUK_FREE(heap, (void *) h); -} - -DUK_INTERNAL void duk_heap_free_heaphdr_raw(duk_heap *heap, duk_heaphdr *hdr) { - DUK_ASSERT(heap); - DUK_ASSERT(hdr); - - DUK_DDD(DUK_DDDPRINT("free heaphdr %p, htype %ld", (void *) hdr, (long) DUK_HEAPHDR_GET_TYPE(hdr))); - - switch (DUK_HEAPHDR_GET_TYPE(hdr)) { - case DUK_HTYPE_STRING: - duk_free_hstring(heap, (duk_hstring *) hdr); - break; - case DUK_HTYPE_OBJECT: - duk_free_hobject(heap, (duk_hobject *) hdr); - break; - default: - DUK_ASSERT(DUK_HEAPHDR_GET_TYPE(hdr) == DUK_HTYPE_BUFFER); - duk_free_hbuffer(heap, (duk_hbuffer *) hdr); - } -} - -/* - * Free the heap. - * - * Frees heap-related non-heap-tracked allocations such as the - * string intern table; then frees the heap allocated objects; - * and finally frees the heap structure itself. Reference counts - * and GC markers are ignored (and not updated) in this process, - * and finalizers won't be called. - * - * The heap pointer and heap object pointers must not be used - * after this call. - */ - -#if defined(DUK_USE_CACHE_ACTIVATION) -DUK_LOCAL duk_size_t duk__heap_free_activation_freelist(duk_heap *heap) { - duk_activation *act; - duk_activation *act_next; - duk_size_t count_act = 0; - - for (act = heap->activation_free; act != NULL;) { - act_next = act->parent; - DUK_FREE(heap, (void *) act); - act = act_next; -#if defined(DUK_USE_DEBUG) - count_act++; -#endif - } - heap->activation_free = NULL; /* needed when called from mark-and-sweep */ - return count_act; -} -#endif /* DUK_USE_CACHE_ACTIVATION */ - -#if defined(DUK_USE_CACHE_CATCHER) -DUK_LOCAL duk_size_t duk__heap_free_catcher_freelist(duk_heap *heap) { - duk_catcher *cat; - duk_catcher *cat_next; - duk_size_t count_cat = 0; - - for (cat = heap->catcher_free; cat != NULL;) { - cat_next = cat->parent; - DUK_FREE(heap, (void *) cat); - cat = cat_next; -#if defined(DUK_USE_DEBUG) - count_cat++; -#endif - } - heap->catcher_free = NULL; /* needed when called from mark-and-sweep */ - - return count_cat; -} -#endif /* DUK_USE_CACHE_CATCHER */ - -DUK_INTERNAL void duk_heap_free_freelists(duk_heap *heap) { - duk_size_t count_act = 0; - duk_size_t count_cat = 0; - -#if defined(DUK_USE_CACHE_ACTIVATION) - count_act = duk__heap_free_activation_freelist(heap); -#endif -#if defined(DUK_USE_CACHE_CATCHER) - count_cat = duk__heap_free_catcher_freelist(heap); -#endif - DUK_UNREF(heap); - DUK_UNREF(count_act); - DUK_UNREF(count_cat); - - DUK_D( - DUK_DPRINT("freed %ld activation freelist entries, %ld catcher freelist entries", (long) count_act, (long) count_cat)); -} - -DUK_LOCAL void duk__free_allocated(duk_heap *heap) { - duk_heaphdr *curr; - duk_heaphdr *next; - - curr = heap->heap_allocated; - while (curr) { - /* We don't log or warn about freeing zero refcount objects - * because they may happen with finalizer processing. - */ - - DUK_DDD(DUK_DDDPRINT("FINALFREE (allocated): %!iO", (duk_heaphdr *) curr)); - next = DUK_HEAPHDR_GET_NEXT(heap, curr); - duk_heap_free_heaphdr_raw(heap, curr); - curr = next; - } -} - -#if defined(DUK_USE_FINALIZER_SUPPORT) -DUK_LOCAL void duk__free_finalize_list(duk_heap *heap) { - duk_heaphdr *curr; - duk_heaphdr *next; - - curr = heap->finalize_list; - while (curr) { - DUK_DDD(DUK_DDDPRINT("FINALFREE (finalize_list): %!iO", (duk_heaphdr *) curr)); - next = DUK_HEAPHDR_GET_NEXT(heap, curr); - duk_heap_free_heaphdr_raw(heap, curr); - curr = next; - } -} -#endif /* DUK_USE_FINALIZER_SUPPORT */ - -DUK_LOCAL void duk__free_stringtable(duk_heap *heap) { - /* strings are only tracked by stringtable */ - duk_heap_strtable_free(heap); -} - -#if defined(DUK_USE_FINALIZER_SUPPORT) -DUK_LOCAL void duk__free_run_finalizers(duk_heap *heap) { - duk_heaphdr *curr; - duk_uint_t round_no; - duk_size_t count_all; - duk_size_t count_finalized; - duk_size_t curr_limit; - - DUK_ASSERT(heap != NULL); - -#if defined(DUK_USE_REFERENCE_COUNTING) - DUK_ASSERT(heap->refzero_list == NULL); /* refzero not running -> must be empty */ -#endif - DUK_ASSERT(heap->finalize_list == NULL); /* mark-and-sweep last pass */ - - if (heap->heap_thread == NULL) { - /* May happen when heap allocation fails right off. There - * cannot be any finalizable objects in this case. - */ - DUK_D(DUK_DPRINT("no heap_thread in heap destruct, assume no finalizable objects")); - return; - } - - /* Prevent finalize_list processing and mark-and-sweep entirely. - * Setting ms_running != 0 also prevents refzero handling from moving - * objects away from the heap_allocated list. The flag name is a bit - * misleading here. - * - * Use a distinct value for ms_running here (== 2) so that assertions - * can detect this situation separate from the normal runtime - * mark-and-sweep case. This allows better assertions (GH-2030). - */ - DUK_ASSERT(heap->pf_prevent_count == 0); - DUK_ASSERT(heap->ms_running == 0); - DUK_ASSERT(heap->ms_prevent_count == 0); - heap->pf_prevent_count = 1; - heap->ms_running = 2; /* Use distinguishable value. */ - heap->ms_prevent_count = 1; /* Bump, because mark-and-sweep assumes it's bumped when ms_running is set. */ - - curr_limit = 0; /* suppress warning, not used */ - for (round_no = 0;; round_no++) { - curr = heap->heap_allocated; - count_all = 0; - count_finalized = 0; - while (curr) { - count_all++; - if (DUK_HEAPHDR_IS_OBJECT(curr)) { - /* Only objects in heap_allocated may have finalizers. Check that - * the object itself has a _Finalizer property (own or inherited) - * so that we don't execute finalizers for e.g. Proxy objects. - */ - DUK_ASSERT(curr != NULL); - - if (DUK_HOBJECT_HAS_FINALIZER_FAST(heap, (duk_hobject *) curr)) { - if (!DUK_HEAPHDR_HAS_FINALIZED((duk_heaphdr *) curr)) { - DUK_ASSERT( - DUK_HEAP_HAS_FINALIZER_NORESCUE(heap)); /* maps to finalizer 2nd argument */ - duk_heap_run_finalizer(heap, (duk_hobject *) curr); - count_finalized++; - } - } - } - curr = DUK_HEAPHDR_GET_NEXT(heap, curr); - } - - /* Each round of finalizer execution may spawn new finalizable objects - * which is normal behavior for some applications. Allow multiple - * rounds of finalization, but use a shrinking limit based on the - * first round to detect the case where a runaway finalizer creates - * an unbounded amount of new finalizable objects. Finalizer rescue - * is not supported: the semantics are unclear because most of the - * objects being finalized here are already reachable. The finalizer - * is given a boolean to indicate that rescue is not possible. - * - * See discussion in: https://github.com/svaarala/duktape/pull/473 - */ - - if (round_no == 0) { - /* Cannot wrap: each object is at least 8 bytes so count is - * at most 1/8 of that. - */ - curr_limit = count_all * 2; - } else { - curr_limit = (curr_limit * 3) / 4; /* Decrease by 25% every round */ - } - DUK_D(DUK_DPRINT("finalizer round %ld complete, %ld objects, tried to execute %ld finalizers, current limit is %ld", - (long) round_no, - (long) count_all, - (long) count_finalized, - (long) curr_limit)); - - if (count_finalized == 0) { - DUK_D(DUK_DPRINT("no more finalizable objects, forced finalization finished")); - break; - } - if (count_finalized >= curr_limit) { - DUK_D(DUK_DPRINT("finalizer count above limit, potentially runaway finalizer; skip remaining finalizers")); - break; - } - } - - DUK_ASSERT(heap->ms_running == 2); - DUK_ASSERT(heap->pf_prevent_count == 1); - heap->ms_running = 0; - heap->pf_prevent_count = 0; -} -#endif /* DUK_USE_FINALIZER_SUPPORT */ - -DUK_INTERNAL void duk_heap_free(duk_heap *heap) { - DUK_D(DUK_DPRINT("free heap: %p", (void *) heap)); - -#if defined(DUK_USE_DEBUG) - duk_heap_strtable_dump(heap); -#endif - -#if defined(DUK_USE_DEBUGGER_SUPPORT) - /* Detach a debugger if attached (can be called multiple times) - * safely. - */ - /* XXX: Add a flag to reject an attempt to re-attach? Otherwise - * the detached callback may immediately reattach. - */ - duk_debug_do_detach(heap); -#endif - - /* Execute finalizers before freeing the heap, even for reachable - * objects. This gives finalizers the chance to free any native - * resources like file handles, allocations made outside Duktape, - * etc. This is quite tricky to get right, so that all finalizer - * guarantees are honored. - * - * Run mark-and-sweep a few times just in case (unreachable object - * finalizers run already here). The last round must rescue objects - * from the previous round without running any more finalizers. This - * ensures rescued objects get their FINALIZED flag cleared so that - * their finalizer is called once more in forced finalization to - * satisfy finalizer guarantees. However, we don't want to run any - * more finalizers because that'd required one more loop, and so on. - * - * XXX: this perhaps requires an execution time limit. - */ - DUK_D(DUK_DPRINT("execute finalizers before freeing heap")); - DUK_ASSERT(heap->pf_skip_finalizers == 0); - DUK_D(DUK_DPRINT("forced gc #1 in heap destruction")); - duk_heap_mark_and_sweep(heap, 0); - DUK_D(DUK_DPRINT("forced gc #2 in heap destruction")); - duk_heap_mark_and_sweep(heap, 0); - DUK_D(DUK_DPRINT("forced gc #3 in heap destruction (don't run finalizers)")); - heap->pf_skip_finalizers = 1; - duk_heap_mark_and_sweep(heap, 0); /* Skip finalizers; queue finalizable objects to heap_allocated. */ - - /* There are never objects in refzero_list at this point, or at any - * point beyond a DECREF (even a DECREF_NORZ). Since Duktape 2.1 - * refzero_list processing is side effect free, so it is always - * processed to completion by a DECREF initially triggering a zero - * refcount. - */ -#if defined(DUK_USE_REFERENCE_COUNTING) - DUK_ASSERT(heap->refzero_list == NULL); /* Always processed to completion inline. */ -#endif -#if defined(DUK_USE_FINALIZER_SUPPORT) - DUK_ASSERT(heap->finalize_list == NULL); /* Last mark-and-sweep with skip_finalizers. */ -#endif - -#if defined(DUK_USE_FINALIZER_SUPPORT) - DUK_D(DUK_DPRINT("run finalizers for remaining finalizable objects")); - DUK_HEAP_SET_FINALIZER_NORESCUE(heap); /* Rescue no longer supported. */ - duk__free_run_finalizers(heap); -#endif /* DUK_USE_FINALIZER_SUPPORT */ - - /* Note: heap->heap_thread, heap->curr_thread, and heap->heap_object - * are on the heap allocated list. - */ - - DUK_D(DUK_DPRINT("freeing temporary freelists")); - duk_heap_free_freelists(heap); - - DUK_D(DUK_DPRINT("freeing heap_allocated of heap: %p", (void *) heap)); - duk__free_allocated(heap); - -#if defined(DUK_USE_REFERENCE_COUNTING) - DUK_ASSERT(heap->refzero_list == NULL); /* Always processed to completion inline. */ -#endif - -#if defined(DUK_USE_FINALIZER_SUPPORT) - DUK_D(DUK_DPRINT("freeing finalize_list of heap: %p", (void *) heap)); - duk__free_finalize_list(heap); -#endif - - DUK_D(DUK_DPRINT("freeing string table of heap: %p", (void *) heap)); - duk__free_stringtable(heap); - - DUK_D(DUK_DPRINT("freeing heap structure: %p", (void *) heap)); - heap->free_func(heap->heap_udata, heap); -} - -/* - * Allocate a heap. - * - * String table is initialized with built-in strings from genbuiltins.py, - * either by dynamically creating the strings or by referring to ROM strings. - */ - -#if defined(DUK_USE_ROM_STRINGS) -DUK_LOCAL duk_bool_t duk__init_heap_strings(duk_heap *heap) { -#if defined(DUK_USE_ASSERTIONS) - duk_small_uint_t i; -#endif - - DUK_UNREF(heap); - - /* With ROM-based strings, heap->strs[] and thr->strs[] are omitted - * so nothing to initialize for strs[]. - */ - -#if defined(DUK_USE_ASSERTIONS) - for (i = 0; i < sizeof(duk_rom_strings_lookup) / sizeof(const duk_hstring *); i++) { - const duk_hstring *h; - duk_uint32_t hash; - - h = duk_rom_strings_lookup[i]; - while (h != NULL) { - hash = duk_heap_hashstring(heap, (const duk_uint8_t *) DUK_HSTRING_GET_DATA(h), DUK_HSTRING_GET_BYTELEN(h)); - DUK_DD(DUK_DDPRINT("duk_rom_strings_lookup[%d] -> hash 0x%08lx, computed 0x%08lx", - (int) i, - (unsigned long) DUK_HSTRING_GET_HASH(h), - (unsigned long) hash)); - DUK_ASSERT(hash == (duk_uint32_t) DUK_HSTRING_GET_HASH(h)); - - h = (const duk_hstring *) h->hdr.h_next; - } - } -#endif - return 1; -} -#else /* DUK_USE_ROM_STRINGS */ - -DUK_LOCAL duk_bool_t duk__init_heap_strings(duk_heap *heap) { - duk_bitdecoder_ctx bd_ctx; - duk_bitdecoder_ctx *bd = &bd_ctx; /* convenience */ - duk_small_uint_t i; - - duk_memzero(&bd_ctx, sizeof(bd_ctx)); - bd->data = (const duk_uint8_t *) duk_strings_data; - bd->length = (duk_size_t) DUK_STRDATA_DATA_LENGTH; - - for (i = 0; i < DUK_HEAP_NUM_STRINGS; i++) { - duk_uint8_t tmp[DUK_STRDATA_MAX_STRLEN]; - duk_small_uint_t len; - duk_hstring *h; - - len = duk_bd_decode_bitpacked_string(bd, tmp); - - /* No need to length check string: it will never exceed even - * the 16-bit length maximum. - */ - DUK_ASSERT(len <= 0xffffUL); - DUK_DDD(DUK_DDDPRINT("intern built-in string %ld", (long) i)); - h = duk_heap_strtable_intern(heap, tmp, len); - if (!h) { - goto failed; - } - DUK_ASSERT(!DUK_HEAPHDR_HAS_READONLY((duk_heaphdr *) h)); - - /* Special flags checks. Since these strings are always - * reachable and a string cannot appear twice in the string - * table, there's no need to check/set these flags elsewhere. - * The 'internal' flag is set by string intern code. - */ - if (i == DUK_STRIDX_EVAL || i == DUK_STRIDX_LC_ARGUMENTS) { - DUK_HSTRING_SET_EVAL_OR_ARGUMENTS(h); - } - if (i >= DUK_STRIDX_START_RESERVED && i < DUK_STRIDX_END_RESERVED) { - DUK_HSTRING_SET_RESERVED_WORD(h); - if (i >= DUK_STRIDX_START_STRICT_RESERVED) { - DUK_HSTRING_SET_STRICT_RESERVED_WORD(h); - } - } - - DUK_DDD(DUK_DDDPRINT("interned: %!O", (duk_heaphdr *) h)); - - /* XXX: The incref macro takes a thread pointer but doesn't - * use it right now. - */ - DUK_HSTRING_INCREF(_never_referenced_, h); - -#if defined(DUK_USE_HEAPPTR16) - heap->strs16[i] = DUK_USE_HEAPPTR_ENC16(heap->heap_udata, (void *) h); -#else - heap->strs[i] = h; -#endif - } - - return 1; - -failed: - return 0; -} -#endif /* DUK_USE_ROM_STRINGS */ - -DUK_LOCAL duk_bool_t duk__init_heap_thread(duk_heap *heap) { - duk_hthread *thr; - - DUK_D(DUK_DPRINT("heap init: alloc heap thread")); - thr = duk_hthread_alloc_unchecked(heap, DUK_HOBJECT_FLAG_EXTENSIBLE | DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_THREAD)); - if (thr == NULL) { - DUK_D(DUK_DPRINT("failed to alloc heap_thread")); - return 0; - } - thr->state = DUK_HTHREAD_STATE_INACTIVE; -#if defined(DUK_USE_ROM_STRINGS) - /* No strs[] pointer. */ -#else /* DUK_USE_ROM_STRINGS */ -#if defined(DUK_USE_HEAPPTR16) - thr->strs16 = heap->strs16; -#else - thr->strs = heap->strs; -#endif -#endif /* DUK_USE_ROM_STRINGS */ - - heap->heap_thread = thr; - DUK_HTHREAD_INCREF(thr, thr); /* Note: first argument not really used */ - - /* 'thr' is now reachable */ - - DUK_D(DUK_DPRINT("heap init: init heap thread stacks")); - if (!duk_hthread_init_stacks(heap, thr)) { - return 0; - } - - /* XXX: this may now fail, and is not handled correctly */ - duk_hthread_create_builtin_objects(thr); - - /* default prototype */ - DUK_HOBJECT_SET_PROTOTYPE_INIT_INCREF(thr, (duk_hobject *) thr, thr->builtins[DUK_BIDX_THREAD_PROTOTYPE]); - - return 1; -} - -#if defined(DUK_USE_DEBUG) -#define DUK__DUMPSZ(t) \ - do { \ - DUK_D(DUK_DPRINT("" #t "=%ld", (long) sizeof(t))); \ - } while (0) - -/* These is not 100% because format would need to be non-portable "long long". - * Also print out as doubles to catch cases where the "long" type is not wide - * enough; the limits will then not be printed accurately but the magnitude - * will be correct. - */ -#define DUK__DUMPLM_SIGNED_RAW(t, a, b) \ - do { \ - DUK_D(DUK_DPRINT(t "=[%ld,%ld]=[%lf,%lf]", (long) (a), (long) (b), (double) (a), (double) (b))); \ - } while (0) -#define DUK__DUMPLM_UNSIGNED_RAW(t, a, b) \ - do { \ - DUK_D(DUK_DPRINT(t "=[%lu,%lu]=[%lf,%lf]", (unsigned long) (a), (unsigned long) (b), (double) (a), (double) (b))); \ - } while (0) -#define DUK__DUMPLM_SIGNED(t) \ - do { \ - DUK__DUMPLM_SIGNED_RAW("DUK_" #t "_{MIN,MAX}", DUK_##t##_MIN, DUK_##t##_MAX); \ - } while (0) -#define DUK__DUMPLM_UNSIGNED(t) \ - do { \ - DUK__DUMPLM_UNSIGNED_RAW("DUK_" #t "_{MIN,MAX}", DUK_##t##_MIN, DUK_##t##_MAX); \ - } while (0) - -DUK_LOCAL void duk__dump_type_sizes(void) { - DUK_D(DUK_DPRINT("sizeof()")); - - /* basic platform types */ - DUK__DUMPSZ(char); - DUK__DUMPSZ(short); - DUK__DUMPSZ(int); - DUK__DUMPSZ(long); - DUK__DUMPSZ(double); - DUK__DUMPSZ(void *); - DUK__DUMPSZ(size_t); - - /* basic types from duk_features.h */ - DUK__DUMPSZ(duk_uint8_t); - DUK__DUMPSZ(duk_int8_t); - DUK__DUMPSZ(duk_uint16_t); - DUK__DUMPSZ(duk_int16_t); - DUK__DUMPSZ(duk_uint32_t); - DUK__DUMPSZ(duk_int32_t); - DUK__DUMPSZ(duk_uint64_t); - DUK__DUMPSZ(duk_int64_t); - DUK__DUMPSZ(duk_uint_least8_t); - DUK__DUMPSZ(duk_int_least8_t); - DUK__DUMPSZ(duk_uint_least16_t); - DUK__DUMPSZ(duk_int_least16_t); - DUK__DUMPSZ(duk_uint_least32_t); - DUK__DUMPSZ(duk_int_least32_t); -#if defined(DUK_USE_64BIT_OPS) - DUK__DUMPSZ(duk_uint_least64_t); - DUK__DUMPSZ(duk_int_least64_t); -#endif - DUK__DUMPSZ(duk_uint_fast8_t); - DUK__DUMPSZ(duk_int_fast8_t); - DUK__DUMPSZ(duk_uint_fast16_t); - DUK__DUMPSZ(duk_int_fast16_t); - DUK__DUMPSZ(duk_uint_fast32_t); - DUK__DUMPSZ(duk_int_fast32_t); -#if defined(DUK_USE_64BIT_OPS) - DUK__DUMPSZ(duk_uint_fast64_t); - DUK__DUMPSZ(duk_int_fast64_t); -#endif - DUK__DUMPSZ(duk_uintptr_t); - DUK__DUMPSZ(duk_intptr_t); - DUK__DUMPSZ(duk_uintmax_t); - DUK__DUMPSZ(duk_intmax_t); - DUK__DUMPSZ(duk_double_t); - - /* important chosen base types */ - DUK__DUMPSZ(duk_int_t); - DUK__DUMPSZ(duk_uint_t); - DUK__DUMPSZ(duk_int_fast_t); - DUK__DUMPSZ(duk_uint_fast_t); - DUK__DUMPSZ(duk_small_int_t); - DUK__DUMPSZ(duk_small_uint_t); - DUK__DUMPSZ(duk_small_int_fast_t); - DUK__DUMPSZ(duk_small_uint_fast_t); - - /* some derived types */ - DUK__DUMPSZ(duk_codepoint_t); - DUK__DUMPSZ(duk_ucodepoint_t); - DUK__DUMPSZ(duk_idx_t); - DUK__DUMPSZ(duk_errcode_t); - DUK__DUMPSZ(duk_uarridx_t); - - /* tval */ - DUK__DUMPSZ(duk_double_union); - DUK__DUMPSZ(duk_tval); - - /* structs from duk_forwdecl.h */ - DUK__DUMPSZ(duk_jmpbuf); /* just one 'int' for C++ exceptions */ - DUK__DUMPSZ(duk_heaphdr); - DUK__DUMPSZ(duk_heaphdr_string); - DUK__DUMPSZ(duk_hstring); - DUK__DUMPSZ(duk_hstring_external); - DUK__DUMPSZ(duk_hobject); - DUK__DUMPSZ(duk_harray); - DUK__DUMPSZ(duk_hcompfunc); - DUK__DUMPSZ(duk_hnatfunc); - DUK__DUMPSZ(duk_hdecenv); - DUK__DUMPSZ(duk_hobjenv); - DUK__DUMPSZ(duk_hthread); -#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) - DUK__DUMPSZ(duk_hbufobj); -#endif - DUK__DUMPSZ(duk_hproxy); - DUK__DUMPSZ(duk_hbuffer); - DUK__DUMPSZ(duk_hbuffer_fixed); - DUK__DUMPSZ(duk_hbuffer_dynamic); - DUK__DUMPSZ(duk_hbuffer_external); - DUK__DUMPSZ(duk_propaccessor); - DUK__DUMPSZ(duk_propvalue); - DUK__DUMPSZ(duk_propdesc); - DUK__DUMPSZ(duk_heap); - DUK__DUMPSZ(duk_activation); - DUK__DUMPSZ(duk_catcher); - DUK__DUMPSZ(duk_strcache_entry); - DUK__DUMPSZ(duk_litcache_entry); - DUK__DUMPSZ(duk_ljstate); - DUK__DUMPSZ(duk_fixedbuffer); - DUK__DUMPSZ(duk_bitdecoder_ctx); - DUK__DUMPSZ(duk_bitencoder_ctx); - DUK__DUMPSZ(duk_token); - DUK__DUMPSZ(duk_re_token); - DUK__DUMPSZ(duk_lexer_point); - DUK__DUMPSZ(duk_lexer_ctx); - DUK__DUMPSZ(duk_compiler_instr); - DUK__DUMPSZ(duk_compiler_func); - DUK__DUMPSZ(duk_compiler_ctx); - DUK__DUMPSZ(duk_re_matcher_ctx); - DUK__DUMPSZ(duk_re_compiler_ctx); -} -DUK_LOCAL void duk__dump_type_limits(void) { - DUK_D(DUK_DPRINT("limits")); - - /* basic types */ - DUK__DUMPLM_SIGNED(INT8); - DUK__DUMPLM_UNSIGNED(UINT8); - DUK__DUMPLM_SIGNED(INT_FAST8); - DUK__DUMPLM_UNSIGNED(UINT_FAST8); - DUK__DUMPLM_SIGNED(INT_LEAST8); - DUK__DUMPLM_UNSIGNED(UINT_LEAST8); - DUK__DUMPLM_SIGNED(INT16); - DUK__DUMPLM_UNSIGNED(UINT16); - DUK__DUMPLM_SIGNED(INT_FAST16); - DUK__DUMPLM_UNSIGNED(UINT_FAST16); - DUK__DUMPLM_SIGNED(INT_LEAST16); - DUK__DUMPLM_UNSIGNED(UINT_LEAST16); - DUK__DUMPLM_SIGNED(INT32); - DUK__DUMPLM_UNSIGNED(UINT32); - DUK__DUMPLM_SIGNED(INT_FAST32); - DUK__DUMPLM_UNSIGNED(UINT_FAST32); - DUK__DUMPLM_SIGNED(INT_LEAST32); - DUK__DUMPLM_UNSIGNED(UINT_LEAST32); -#if defined(DUK_USE_64BIT_OPS) - DUK__DUMPLM_SIGNED(INT64); - DUK__DUMPLM_UNSIGNED(UINT64); - DUK__DUMPLM_SIGNED(INT_FAST64); - DUK__DUMPLM_UNSIGNED(UINT_FAST64); - DUK__DUMPLM_SIGNED(INT_LEAST64); - DUK__DUMPLM_UNSIGNED(UINT_LEAST64); -#endif - DUK__DUMPLM_SIGNED(INTPTR); - DUK__DUMPLM_UNSIGNED(UINTPTR); - DUK__DUMPLM_SIGNED(INTMAX); - DUK__DUMPLM_UNSIGNED(UINTMAX); - - /* derived types */ - DUK__DUMPLM_SIGNED(INT); - DUK__DUMPLM_UNSIGNED(UINT); - DUK__DUMPLM_SIGNED(INT_FAST); - DUK__DUMPLM_UNSIGNED(UINT_FAST); - DUK__DUMPLM_SIGNED(SMALL_INT); - DUK__DUMPLM_UNSIGNED(SMALL_UINT); - DUK__DUMPLM_SIGNED(SMALL_INT_FAST); - DUK__DUMPLM_UNSIGNED(SMALL_UINT_FAST); -} - -DUK_LOCAL void duk__dump_misc_options(void) { - DUK_D(DUK_DPRINT("DUK_VERSION: %ld", (long) DUK_VERSION)); - DUK_D(DUK_DPRINT("DUK_GIT_DESCRIBE: %s", DUK_GIT_DESCRIBE)); - DUK_D(DUK_DPRINT("OS string: %s", DUK_USE_OS_STRING)); - DUK_D(DUK_DPRINT("architecture string: %s", DUK_USE_ARCH_STRING)); - DUK_D(DUK_DPRINT("compiler string: %s", DUK_USE_COMPILER_STRING)); - DUK_D(DUK_DPRINT("debug level: %ld", (long) DUK_USE_DEBUG_LEVEL)); -#if defined(DUK_USE_PACKED_TVAL) - DUK_D(DUK_DPRINT("DUK_USE_PACKED_TVAL: yes")); -#else - DUK_D(DUK_DPRINT("DUK_USE_PACKED_TVAL: no")); -#endif -#if defined(DUK_USE_VARIADIC_MACROS) - DUK_D(DUK_DPRINT("DUK_USE_VARIADIC_MACROS: yes")); -#else - DUK_D(DUK_DPRINT("DUK_USE_VARIADIC_MACROS: no")); -#endif -#if defined(DUK_USE_INTEGER_LE) - DUK_D(DUK_DPRINT("integer endianness: little")); -#elif defined(DUK_USE_INTEGER_ME) - DUK_D(DUK_DPRINT("integer endianness: mixed")); -#elif defined(DUK_USE_INTEGER_BE) - DUK_D(DUK_DPRINT("integer endianness: big")); -#else - DUK_D(DUK_DPRINT("integer endianness: ???")); -#endif -#if defined(DUK_USE_DOUBLE_LE) - DUK_D(DUK_DPRINT("IEEE double endianness: little")); -#elif defined(DUK_USE_DOUBLE_ME) - DUK_D(DUK_DPRINT("IEEE double endianness: mixed")); -#elif defined(DUK_USE_DOUBLE_BE) - DUK_D(DUK_DPRINT("IEEE double endianness: big")); -#else - DUK_D(DUK_DPRINT("IEEE double endianness: ???")); -#endif -} -#endif /* DUK_USE_DEBUG */ - -DUK_INTERNAL -duk_heap *duk_heap_alloc(duk_alloc_function alloc_func, - duk_realloc_function realloc_func, - duk_free_function free_func, - void *heap_udata, - duk_fatal_function fatal_func) { - duk_heap *res = NULL; - duk_uint32_t st_initsize; - - DUK_D(DUK_DPRINT("allocate heap")); - - /* - * Random config sanity asserts - */ - - DUK_ASSERT(DUK_USE_STRTAB_MINSIZE >= 64); - - DUK_ASSERT((DUK_HTYPE_STRING & 0x01U) == 0); - DUK_ASSERT((DUK_HTYPE_BUFFER & 0x01U) == 0); - DUK_ASSERT((DUK_HTYPE_OBJECT & 0x01U) == 1); /* DUK_HEAPHDR_IS_OBJECT() relies ont his. */ - - /* - * Debug dump type sizes - */ - -#if defined(DUK_USE_DEBUG) - duk__dump_misc_options(); - duk__dump_type_sizes(); - duk__dump_type_limits(); -#endif - - /* - * If selftests enabled, run them as early as possible. - */ - -#if defined(DUK_USE_SELF_TESTS) - DUK_D(DUK_DPRINT("run self tests")); - if (duk_selftest_run_tests(alloc_func, realloc_func, free_func, heap_udata) > 0) { - fatal_func(heap_udata, "self test(s) failed"); - } - DUK_D(DUK_DPRINT("self tests passed")); -#endif - - /* - * Important assert-like checks that should be enabled even - * when assertions are otherwise not enabled. - */ - -#if defined(DUK_USE_EXEC_REGCONST_OPTIMIZE) - /* Can't check sizeof() using preprocessor so explicit check. - * This will be optimized away in practice; unfortunately a - * warning is generated on some compilers as a result. - */ -#if defined(DUK_USE_PACKED_TVAL) - if (sizeof(duk_tval) != 8) { -#else - if (sizeof(duk_tval) != 16) { -#endif - fatal_func(heap_udata, "sizeof(duk_tval) not 8 or 16, cannot use DUK_USE_EXEC_REGCONST_OPTIMIZE option"); - } -#endif /* DUK_USE_EXEC_REGCONST_OPTIMIZE */ - - /* - * Computed values (e.g. INFINITY) - */ - -#if defined(DUK_USE_COMPUTED_NAN) - do { - /* Workaround for some exotic platforms where NAN is missing - * and the expression (0.0 / 0.0) does NOT result in a NaN. - * Such platforms use the global 'duk_computed_nan' which must - * be initialized at runtime. Use 'volatile' to ensure that - * the compiler will actually do the computation and not try - * to do constant folding which might result in the original - * problem. - */ - volatile double dbl1 = 0.0; - volatile double dbl2 = 0.0; - duk_computed_nan = dbl1 / dbl2; - } while (0); -#endif - -#if defined(DUK_USE_COMPUTED_INFINITY) - do { - /* Similar workaround for INFINITY. */ - volatile double dbl1 = 1.0; - volatile double dbl2 = 0.0; - duk_computed_infinity = dbl1 / dbl2; - } while (0); -#endif - - /* - * Allocate heap struct - * - * Use a raw call, all macros expect the heap to be initialized - */ - -#if defined(DUK_USE_INJECT_HEAP_ALLOC_ERROR) && (DUK_USE_INJECT_HEAP_ALLOC_ERROR == 1) - goto failed; -#endif - DUK_D(DUK_DPRINT("alloc duk_heap object")); - res = (duk_heap *) alloc_func(heap_udata, sizeof(duk_heap)); - if (!res) { - goto failed; - } - - /* - * Zero the struct, and start initializing roughly in order - */ - - duk_memzero(res, sizeof(*res)); -#if defined(DUK_USE_ASSERTIONS) - res->heap_initializing = 1; -#endif - - /* explicit NULL inits */ -#if defined(DUK_USE_EXPLICIT_NULL_INIT) - res->heap_udata = NULL; - res->heap_allocated = NULL; -#if defined(DUK_USE_REFERENCE_COUNTING) - res->refzero_list = NULL; -#endif -#if defined(DUK_USE_FINALIZER_SUPPORT) - res->finalize_list = NULL; -#if defined(DUK_USE_ASSERTIONS) - res->currently_finalizing = NULL; -#endif -#endif -#if defined(DUK_USE_CACHE_ACTIVATION) - res->activation_free = NULL; -#endif -#if defined(DUK_USE_CACHE_CATCHER) - res->catcher_free = NULL; -#endif - res->heap_thread = NULL; - res->curr_thread = NULL; - res->heap_object = NULL; -#if defined(DUK_USE_STRTAB_PTRCOMP) - res->strtable16 = NULL; -#else - res->strtable = NULL; -#endif -#if defined(DUK_USE_ROM_STRINGS) - /* no res->strs[] */ -#else /* DUK_USE_ROM_STRINGS */ -#if defined(DUK_USE_HEAPPTR16) - /* res->strs16[] is zeroed and zero decodes to NULL, so no NULL inits. */ -#else - { - duk_small_uint_t i; - for (i = 0; i < DUK_HEAP_NUM_STRINGS; i++) { - res->strs[i] = NULL; - } - } -#endif -#endif /* DUK_USE_ROM_STRINGS */ -#if defined(DUK_USE_DEBUGGER_SUPPORT) - res->dbg_read_cb = NULL; - res->dbg_write_cb = NULL; - res->dbg_peek_cb = NULL; - res->dbg_read_flush_cb = NULL; - res->dbg_write_flush_cb = NULL; - res->dbg_request_cb = NULL; - res->dbg_udata = NULL; - res->dbg_pause_act = NULL; -#endif -#endif /* DUK_USE_EXPLICIT_NULL_INIT */ - - res->alloc_func = alloc_func; - res->realloc_func = realloc_func; - res->free_func = free_func; - res->heap_udata = heap_udata; - res->fatal_func = fatal_func; - - /* XXX: for now there's a pointer packing zero assumption, i.e. - * NULL <=> compressed pointer 0. If this is removed, may need - * to precompute e.g. null16 here. - */ - - /* res->ms_trigger_counter == 0 -> now causes immediate GC; which is OK */ - - /* Prevent mark-and-sweep and finalizer execution until heap is completely - * initialized. - */ - DUK_ASSERT(res->ms_prevent_count == 0); - DUK_ASSERT(res->pf_prevent_count == 0); - res->ms_prevent_count = 1; - res->pf_prevent_count = 1; - DUK_ASSERT(res->ms_running == 0); - - res->call_recursion_depth = 0; - res->call_recursion_limit = DUK_USE_NATIVE_CALL_RECLIMIT; - - /* XXX: use the pointer as a seed for now: mix in time at least */ - - /* The casts through duk_uintptr_t is to avoid the following GCC warning: - * - * warning: cast from pointer to integer of different size [-Wpointer-to-int-cast] - * - * This still generates a /Wp64 warning on VS2010 when compiling for x86. - */ -#if defined(DUK_USE_ROM_STRINGS) - /* XXX: make a common DUK_USE_ option, and allow custom fixed seed? */ - DUK_D(DUK_DPRINT("using rom strings, force heap hash_seed to fixed value 0x%08lx", (long) DUK__FIXED_HASH_SEED)); - res->hash_seed = (duk_uint32_t) DUK__FIXED_HASH_SEED; -#else /* DUK_USE_ROM_STRINGS */ - res->hash_seed = (duk_uint32_t) (duk_uintptr_t) res; -#if !defined(DUK_USE_STRHASH_DENSE) - res->hash_seed ^= 5381; /* Bernstein hash init value is normally 5381; XOR it in in case pointer low bits are 0 */ -#endif -#endif /* DUK_USE_ROM_STRINGS */ - -#if defined(DUK_USE_EXPLICIT_NULL_INIT) - res->lj.jmpbuf_ptr = NULL; -#endif - DUK_ASSERT(res->lj.type == DUK_LJ_TYPE_UNKNOWN); /* zero */ - DUK_ASSERT(res->lj.iserror == 0); - DUK_TVAL_SET_UNDEFINED(&res->lj.value1); - DUK_TVAL_SET_UNDEFINED(&res->lj.value2); - - DUK_ASSERT_LJSTATE_UNSET(res); - - /* - * Init stringtable: fixed variant - */ - - st_initsize = DUK_USE_STRTAB_MINSIZE; -#if defined(DUK_USE_STRTAB_PTRCOMP) - res->strtable16 = (duk_uint16_t *) alloc_func(heap_udata, sizeof(duk_uint16_t) * st_initsize); - if (res->strtable16 == NULL) { - goto failed; - } -#else - res->strtable = (duk_hstring **) alloc_func(heap_udata, sizeof(duk_hstring *) * st_initsize); - if (res->strtable == NULL) { - goto failed; - } -#endif - res->st_size = st_initsize; - res->st_mask = st_initsize - 1; -#if (DUK_USE_STRTAB_MINSIZE != DUK_USE_STRTAB_MAXSIZE) - DUK_ASSERT(res->st_count == 0); -#endif - -#if defined(DUK_USE_STRTAB_PTRCOMP) - /* zero assumption */ - duk_memzero(res->strtable16, sizeof(duk_uint16_t) * st_initsize); -#else -#if defined(DUK_USE_EXPLICIT_NULL_INIT) - { - duk_uint32_t i; - for (i = 0; i < st_initsize; i++) { - res->strtable[i] = NULL; - } - } -#else - duk_memzero(res->strtable, sizeof(duk_hstring *) * st_initsize); -#endif /* DUK_USE_EXPLICIT_NULL_INIT */ -#endif /* DUK_USE_STRTAB_PTRCOMP */ - - /* - * Init stringcache - */ - -#if defined(DUK_USE_EXPLICIT_NULL_INIT) - { - duk_uint_t i; - for (i = 0; i < DUK_HEAP_STRCACHE_SIZE; i++) { - res->strcache[i].h = NULL; - } - } -#endif - - /* - * Init litcache - */ -#if defined(DUK_USE_LITCACHE_SIZE) - DUK_ASSERT(DUK_USE_LITCACHE_SIZE > 0); - DUK_ASSERT(DUK_IS_POWER_OF_TWO((duk_uint_t) DUK_USE_LITCACHE_SIZE)); -#if defined(DUK_USE_EXPLICIT_NULL_INIT) - { - duk_uint_t i; - for (i = 0; i < DUK_USE_LITCACHE_SIZE; i++) { - res->litcache[i].addr = NULL; - res->litcache[i].h = NULL; - } - } -#endif -#endif /* DUK_USE_LITCACHE_SIZE */ - - /* XXX: error handling is incomplete. It would be cleanest if - * there was a setjmp catchpoint, so that all init code could - * freely throw errors. If that were the case, the return code - * passing here could be removed. - */ - - /* - * Init built-in strings - */ - -#if defined(DUK_USE_INJECT_HEAP_ALLOC_ERROR) && (DUK_USE_INJECT_HEAP_ALLOC_ERROR == 2) - goto failed; -#endif - DUK_D(DUK_DPRINT("heap init: initialize heap strings")); - if (!duk__init_heap_strings(res)) { - goto failed; - } - - /* - * Init the heap thread - */ - -#if defined(DUK_USE_INJECT_HEAP_ALLOC_ERROR) && (DUK_USE_INJECT_HEAP_ALLOC_ERROR == 3) - goto failed; -#endif - DUK_D(DUK_DPRINT("heap init: initialize heap thread")); - if (!duk__init_heap_thread(res)) { - goto failed; - } - - /* - * Init the heap object - */ - -#if defined(DUK_USE_INJECT_HEAP_ALLOC_ERROR) && (DUK_USE_INJECT_HEAP_ALLOC_ERROR == 4) - goto failed; -#endif - DUK_D(DUK_DPRINT("heap init: initialize heap object")); - DUK_ASSERT(res->heap_thread != NULL); - res->heap_object = duk_hobject_alloc_unchecked(res, - DUK_HOBJECT_FLAG_EXTENSIBLE | DUK_HOBJECT_FLAG_FASTREFS | - DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_OBJECT)); - if (res->heap_object == NULL) { - goto failed; - } - DUK_HOBJECT_INCREF(res->heap_thread, res->heap_object); - - /* - * Odds and ends depending on the heap thread - */ - -#if !defined(DUK_USE_GET_RANDOM_DOUBLE) -#if defined(DUK_USE_PREFER_SIZE) || !defined(DUK_USE_64BIT_OPS) - res->rnd_state = (duk_uint32_t) duk_time_get_ecmascript_time(res->heap_thread); - duk_util_tinyrandom_prepare_seed(res->heap_thread); -#else - res->rnd_state[0] = (duk_uint64_t) duk_time_get_ecmascript_time(res->heap_thread); - DUK_ASSERT(res->rnd_state[1] == 0); /* Not filled here, filled in by seed preparation. */ -#if 0 /* Manual test values matching misc/xoroshiro128plus_test.c. */ - res->rnd_state[0] = DUK_U64_CONSTANT(0xdeadbeef12345678); - res->rnd_state[1] = DUK_U64_CONSTANT(0xcafed00d12345678); -#endif - duk_util_tinyrandom_prepare_seed(res->heap_thread); - /* Mix in heap pointer: this ensures that if two Duktape heaps are - * created on the same millisecond, they get a different PRNG - * sequence (unless e.g. virtual memory addresses cause also the - * heap object pointer to be the same). - */ - { - duk_uint64_t tmp_u64; - tmp_u64 = 0; - duk_memcpy((void *) &tmp_u64, - (const void *) &res, - (size_t) (sizeof(void *) >= sizeof(duk_uint64_t) ? sizeof(duk_uint64_t) : sizeof(void *))); - res->rnd_state[1] ^= tmp_u64; - } - do { - duk_small_uint_t i; - for (i = 0; i < 10; i++) { - /* Throw away a few initial random numbers just in - * case. Probably unnecessary due to SplitMix64 - * preparation. - */ - (void) duk_util_tinyrandom_get_double(res->heap_thread); - } - } while (0); -#endif -#endif - - /* - * Allow finalizer and mark-and-sweep processing. - */ - - DUK_D(DUK_DPRINT("heap init: allow finalizer/mark-and-sweep processing")); - DUK_ASSERT(res->ms_prevent_count == 1); - DUK_ASSERT(res->pf_prevent_count == 1); - res->ms_prevent_count = 0; - res->pf_prevent_count = 0; - DUK_ASSERT(res->ms_running == 0); -#if defined(DUK_USE_ASSERTIONS) - res->heap_initializing = 0; -#endif - - /* - * All done. - */ - - DUK_D(DUK_DPRINT("allocated heap: %p", (void *) res)); - return res; - -failed: - DUK_D(DUK_DPRINT("heap allocation failed")); - - if (res != NULL) { - /* Assumes that allocated pointers and alloc funcs are valid - * if res exists. - */ - DUK_ASSERT(res->ms_prevent_count == 1); - DUK_ASSERT(res->pf_prevent_count == 1); - DUK_ASSERT(res->ms_running == 0); - if (res->heap_thread != NULL) { - res->ms_prevent_count = 0; - res->pf_prevent_count = 0; - } -#if defined(DUK_USE_ASSERTIONS) - res->heap_initializing = 0; -#endif - - DUK_ASSERT(res->alloc_func != NULL); - DUK_ASSERT(res->realloc_func != NULL); - DUK_ASSERT(res->free_func != NULL); - duk_heap_free(res); - } - - return NULL; -} - -/* automatic undefs */ -#undef DUK__DUMPLM_SIGNED -#undef DUK__DUMPLM_SIGNED_RAW -#undef DUK__DUMPLM_UNSIGNED -#undef DUK__DUMPLM_UNSIGNED_RAW -#undef DUK__DUMPSZ -#undef DUK__FIXED_HASH_SEED -#line 1 "duk_heap_finalize.c" -/* - * Finalizer handling. - */ - -/* #include duk_internal.h -> already included */ - -#if defined(DUK_USE_FINALIZER_SUPPORT) - -/* - * Fake torture finalizer. - */ - -#if defined(DUK_USE_FINALIZER_TORTURE) -DUK_LOCAL duk_ret_t duk__fake_global_finalizer(duk_hthread *thr) { - DUK_DD(DUK_DDPRINT("fake global torture finalizer executed")); - - /* Require a lot of stack to force a value stack grow/shrink. */ - duk_require_stack(thr, 100000); - - /* Force a reallocation with pointer change for value stack - * to maximize side effects. - */ - duk_hthread_valstack_torture_realloc(thr); - - /* Inner function call, error throw. */ - duk_eval_string_noresult(thr, - "(function dummy() {\n" - " dummy.prototype = null; /* break reference loop */\n" - " try {\n" - " throw 'fake-finalizer-dummy-error';\n" - " } catch (e) {\n" - " void e;\n" - " }\n" - "})()"); - - /* The above creates garbage (e.g. a function instance). Because - * the function/prototype reference loop is broken, it gets collected - * immediately by DECREF. If Function.prototype has a _Finalizer - * property (happens in some test cases), the garbage gets queued to - * finalize_list. This still won't cause an infinite loop because - * the torture finalizer is called once per finalize_list run and - * the garbage gets handled in the same run. (If the garbage needs - * mark-and-sweep collection, an infinite loop might ensue.) - */ - return 0; -} - -DUK_LOCAL void duk__run_global_torture_finalizer(duk_hthread *thr) { - DUK_ASSERT(thr != NULL); - - /* Avoid fake finalization when callstack limit is near. Otherwise - * a callstack limit error will be created, then refzero'ed. The - * +5 headroom is conservative. - */ - if (thr->heap->call_recursion_depth + 5 >= thr->heap->call_recursion_limit || - thr->callstack_top + 5 >= DUK_USE_CALLSTACK_LIMIT) { - DUK_D(DUK_DPRINT("skip global torture finalizer, too little headroom for call recursion or call stack size")); - return; - } - - /* Run fake finalizer. Avoid creating unnecessary garbage. */ - duk_push_c_function(thr, duk__fake_global_finalizer, 0 /*nargs*/); - (void) duk_pcall(thr, 0 /*nargs*/); - duk_pop(thr); -} -#endif /* DUK_USE_FINALIZER_TORTURE */ - -/* - * Process the finalize_list to completion. - * - * An object may be placed on finalize_list by either refcounting or - * mark-and-sweep. The refcount of objects placed by refcounting will be - * zero; the refcount of objects placed by mark-and-sweep is > 0. In both - * cases the refcount is bumped by 1 artificially so that a REFZERO event - * can never happen while an object is waiting for finalization. Without - * this bump a REFZERO could now happen because user code may call - * duk_push_heapptr() and then pop a value even when it's on finalize_list. - * - * List processing assumes refcounts are kept up-to-date at all times, so - * that once the finalizer returns, a zero refcount is a reliable reason to - * free the object immediately rather than place it back to the heap. This - * is the case because we run outside of refzero_list processing so that - * DECREF cascades are handled fully inline. - * - * For mark-and-sweep queued objects (had_zero_refcount false) the object - * may be freed immediately if its refcount is zero after the finalizer call - * (i.e. finalizer removed the reference loop for the object). If not, the - * next mark-and-sweep will collect the object unless it has become reachable - * (i.e. rescued) by that time and its refcount hasn't fallen to zero before - * that. Mark-and-sweep detects these objects because their FINALIZED flag - * is set. - * - * There's an inherent limitation for mark-and-sweep finalizer rescuing: an - * object won't get refinalized if (1) it's rescued, but (2) becomes - * unreachable before mark-and-sweep has had time to notice it. The next - * mark-and-sweep round simply doesn't have any information of whether the - * object has been unreachable the whole time or not (the only way to get - * that information would be a mark-and-sweep pass for *every finalized - * object*). This is awkward for the application because the mark-and-sweep - * round is not generally visible or under full application control. - * - * For refcount queued objects (had_zero_refcount true) the object is either - * immediately freed or rescued, and waiting for a mark-and-sweep round is not - * necessary (or desirable); FINALIZED is cleared when a rescued object is - * queued back to heap_allocated. The object is eligible for finalization - * again (either via refcounting or mark-and-sweep) immediately after being - * rescued. If a refcount finalized object is placed into an unreachable - * reference loop by its finalizer, it will get collected by mark-and-sweep - * and currently the finalizer will execute again. - * - * There's a special case where: - * - * - Mark-and-sweep queues an object to finalize_list for finalization. - * - The finalizer is executed, FINALIZED is set, and object is queued - * back to heap_allocated, waiting for a new mark-and-sweep round. - * - The object's refcount drops to zero before mark-and-sweep has a - * chance to run another round and make a rescue/free decision. - * - * This is now handled by refzero code: if an object has a finalizer but - * FINALIZED is already set, the object is freed without finalizer processing. - * The outcome is the same as if mark-and-sweep was executed at that point; - * mark-and-sweep would also free the object without another finalizer run. - * This could also be changed so that the refzero-triggered finalizer *IS* - * executed: being refzero collected implies someone has operated on the - * object so it hasn't been totally unreachable the whole time. This would - * risk a finalizer loop however. - */ - -DUK_INTERNAL void duk_heap_process_finalize_list(duk_heap *heap) { - duk_heaphdr *curr; -#if defined(DUK_USE_DEBUG) - duk_size_t count = 0; -#endif - - DUK_DDD(DUK_DDDPRINT("duk_heap_process_finalize_list: %p", (void *) heap)); - - if (heap->pf_prevent_count != 0) { - DUK_DDD(DUK_DDDPRINT("skip finalize_list processing: pf_prevent_count != 0")); - return; - } - - /* Heap alloc prevents mark-and-sweep before heap_thread is ready. */ - DUK_ASSERT(heap != NULL); - DUK_ASSERT(heap->heap_thread != NULL); - DUK_ASSERT(heap->heap_thread->valstack != NULL); -#if defined(DUK_USE_REFERENCE_COUNTING) - DUK_ASSERT(heap->refzero_list == NULL); -#endif - - DUK_ASSERT(heap->pf_prevent_count == 0); - heap->pf_prevent_count = 1; - - /* Mark-and-sweep no longer needs to be prevented when running - * finalizers: mark-and-sweep skips any rescue decisions if there - * are any objects in finalize_list when mark-and-sweep is entered. - * This protects finalized objects from incorrect rescue decisions - * caused by finalize_list being a reachability root and only - * partially processed. Freeing decisions are not postponed. - */ - - /* When finalizer torture is enabled, make a fake finalizer call with - * maximum side effects regardless of whether finalize_list is empty. - */ -#if defined(DUK_USE_FINALIZER_TORTURE) - duk__run_global_torture_finalizer(heap->heap_thread); -#endif - - /* Process finalize_list until it becomes empty. There's currently no - * protection against a finalizer always creating more garbage. - */ - while ((curr = heap->finalize_list) != NULL) { -#if defined(DUK_USE_REFERENCE_COUNTING) - duk_bool_t queue_back; -#endif - - DUK_DD(DUK_DDPRINT("processing finalize_list entry: %p -> %!iO", (void *) curr, curr)); - - DUK_ASSERT(DUK_HEAPHDR_GET_TYPE(curr) == DUK_HTYPE_OBJECT); /* Only objects have finalizers. */ - DUK_ASSERT(!DUK_HEAPHDR_HAS_REACHABLE(curr)); - DUK_ASSERT(!DUK_HEAPHDR_HAS_TEMPROOT(curr)); - DUK_ASSERT(DUK_HEAPHDR_HAS_FINALIZABLE( - curr)); /* All objects on finalize_list will have this flag (except object being finalized right now). */ - DUK_ASSERT(!DUK_HEAPHDR_HAS_FINALIZED(curr)); /* Queueing code ensures. */ - DUK_ASSERT(!DUK_HEAPHDR_HAS_READONLY(curr)); /* ROM objects never get freed (or finalized). */ - -#if defined(DUK_USE_ASSERTIONS) - DUK_ASSERT(heap->currently_finalizing == NULL); - heap->currently_finalizing = curr; -#endif - - /* Clear FINALIZABLE for object being finalized, so that - * duk_push_heapptr() can properly ignore the object. - */ - DUK_HEAPHDR_CLEAR_FINALIZABLE(curr); - - if (DUK_LIKELY(!heap->pf_skip_finalizers)) { - /* Run the finalizer, duk_heap_run_finalizer() sets - * and checks for FINALIZED to prevent the finalizer - * from executing multiple times per finalization cycle. - * (This safeguard shouldn't be actually needed anymore). - */ - -#if defined(DUK_USE_REFERENCE_COUNTING) - duk_bool_t had_zero_refcount; -#endif - - /* The object's refcount is >0 throughout so it won't be - * refzero processed prematurely. - */ -#if defined(DUK_USE_REFERENCE_COUNTING) - DUK_ASSERT(DUK_HEAPHDR_GET_REFCOUNT(curr) >= 1); - had_zero_refcount = (DUK_HEAPHDR_GET_REFCOUNT(curr) == 1); /* Preincremented on finalize_list insert. */ -#endif - - DUK_ASSERT(!DUK_HEAPHDR_HAS_FINALIZED(curr)); - duk_heap_run_finalizer(heap, (duk_hobject *) curr); /* must never longjmp */ - DUK_ASSERT(DUK_HEAPHDR_HAS_FINALIZED(curr)); - /* XXX: assert that object is still in finalize_list - * when duk_push_heapptr() allows automatic rescue. - */ - -#if defined(DUK_USE_REFERENCE_COUNTING) - DUK_DD(DUK_DDPRINT("refcount after finalizer (includes bump): %ld", (long) DUK_HEAPHDR_GET_REFCOUNT(curr))); - if (DUK_HEAPHDR_GET_REFCOUNT(curr) == 1) { /* Only artificial bump in refcount? */ -#if defined(DUK_USE_DEBUG) - if (had_zero_refcount) { - DUK_DD(DUK_DDPRINT( - "finalized object's refcount is zero -> free immediately (refcount queued)")); - } else { - DUK_DD(DUK_DDPRINT( - "finalized object's refcount is zero -> free immediately (mark-and-sweep queued)")); - } -#endif - queue_back = 0; - } else -#endif - { -#if defined(DUK_USE_REFERENCE_COUNTING) - queue_back = 1; - if (had_zero_refcount) { - /* When finalization is triggered - * by refzero and we queue the object - * back, clear FINALIZED right away - * so that the object can be refinalized - * immediately if necessary. - */ - DUK_HEAPHDR_CLEAR_FINALIZED(curr); - } -#endif - } - } else { - /* Used during heap destruction: don't actually run finalizers - * because we're heading into forced finalization. Instead, - * queue finalizable objects back to the heap_allocated list. - */ - DUK_D(DUK_DPRINT("skip finalizers flag set, queue object to heap_allocated without finalizing")); - DUK_ASSERT(!DUK_HEAPHDR_HAS_FINALIZED(curr)); -#if defined(DUK_USE_REFERENCE_COUNTING) - queue_back = 1; -#endif - } - - /* Dequeue object from finalize_list. Note that 'curr' may no - * longer be finalize_list head because new objects may have - * been queued to the list. As a result we can't optimize for - * the single-linked heap case and must scan the list for - * removal, typically the scan is very short however. - */ - DUK_HEAP_REMOVE_FROM_FINALIZE_LIST(heap, curr); - - /* Queue back to heap_allocated or free immediately. */ -#if defined(DUK_USE_REFERENCE_COUNTING) - if (queue_back) { - /* FINALIZED is only cleared if object originally - * queued for finalization by refcounting. For - * mark-and-sweep FINALIZED is left set, so that - * next mark-and-sweep round can make a rescue/free - * decision. - */ - DUK_ASSERT(DUK_HEAPHDR_GET_REFCOUNT(curr) >= 1); - DUK_HEAPHDR_PREDEC_REFCOUNT(curr); /* Remove artificial refcount bump. */ - DUK_HEAPHDR_CLEAR_FINALIZABLE(curr); - DUK_HEAP_INSERT_INTO_HEAP_ALLOCATED(heap, curr); - } else { - /* No need to remove the refcount bump here. */ - DUK_ASSERT(DUK_HEAPHDR_GET_TYPE(curr) == DUK_HTYPE_OBJECT); /* currently, always the case */ - DUK_DD(DUK_DDPRINT("refcount finalize after finalizer call: %!O", curr)); - duk_hobject_refcount_finalize_norz(heap, (duk_hobject *) curr); - duk_free_hobject(heap, (duk_hobject *) curr); - DUK_DD(DUK_DDPRINT("freed hobject after finalization: %p", (void *) curr)); - } -#else /* DUK_USE_REFERENCE_COUNTING */ - DUK_HEAPHDR_CLEAR_FINALIZABLE(curr); - DUK_HEAP_INSERT_INTO_HEAP_ALLOCATED(heap, curr); -#endif /* DUK_USE_REFERENCE_COUNTING */ - -#if defined(DUK_USE_DEBUG) - count++; -#endif - -#if defined(DUK_USE_ASSERTIONS) - DUK_ASSERT(heap->currently_finalizing != NULL); - heap->currently_finalizing = NULL; -#endif - } - - /* finalize_list will always be processed completely. */ - DUK_ASSERT(heap->finalize_list == NULL); - -#if 0 - /* While NORZ macros are used above, this is unnecessary because the - * only pending side effects are now finalizers, and finalize_list is - * empty. - */ - DUK_REFZERO_CHECK_SLOW(heap->heap_thread); -#endif - - /* Prevent count may be bumped while finalizers run, but should always - * be reliably unbumped by the time we get here. - */ - DUK_ASSERT(heap->pf_prevent_count == 1); - heap->pf_prevent_count = 0; - -#if defined(DUK_USE_DEBUG) - DUK_DD(DUK_DDPRINT("duk_heap_process_finalize_list: %ld finalizers called", (long) count)); -#endif -} - -/* - * Run an duk_hobject finalizer. Must never throw an uncaught error - * (but may throw caught errors). - * - * There is no return value. Any return value or error thrown by - * the finalizer is ignored (although errors are debug logged). - * - * Notes: - * - * - The finalizer thread 'top' assertions are there because it is - * critical that strict stack policy is observed (i.e. no cruft - * left on the finalizer stack). - */ - -DUK_LOCAL duk_ret_t duk__finalize_helper(duk_hthread *thr, void *udata) { - DUK_ASSERT(thr != NULL); - DUK_UNREF(udata); - - DUK_DDD(DUK_DDDPRINT("protected finalization helper running")); - - /* [... obj] */ - - /* _Finalizer property is read without checking if the value is - * callable or even exists. This is intentional, and handled - * by throwing an error which is caught by the safe call wrapper. - * - * XXX: Finalizer lookup should traverse the prototype chain (to allow - * inherited finalizers) but should not invoke accessors or proxy object - * behavior. At the moment this lookup will invoke proxy behavior, so - * caller must ensure that this function is not called if the target is - * a Proxy. - */ - duk_get_prop_stridx_short(thr, -1, DUK_STRIDX_INT_FINALIZER); /* -> [... obj finalizer] */ - duk_dup_m2(thr); - duk_push_boolean(thr, DUK_HEAP_HAS_FINALIZER_NORESCUE(thr->heap)); - DUK_DDD(DUK_DDDPRINT("calling finalizer")); - duk_call(thr, 2); /* [ ... obj finalizer obj heapDestruct ] -> [ ... obj retval ] */ - DUK_DDD(DUK_DDDPRINT("finalizer returned successfully")); - return 0; - - /* Note: we rely on duk_safe_call() to fix up the stack for the caller, - * so we don't need to pop stuff here. There is no return value; - * caller determines rescued status based on object refcount. - */ -} - -DUK_INTERNAL void duk_heap_run_finalizer(duk_heap *heap, duk_hobject *obj) { - duk_hthread *thr; - duk_ret_t rc; -#if defined(DUK_USE_ASSERTIONS) - duk_idx_t entry_top; -#endif - - DUK_DD(DUK_DDPRINT("running duk_hobject finalizer for object: %p", (void *) obj)); - - DUK_ASSERT(heap != NULL); - DUK_ASSERT(heap->heap_thread != NULL); - thr = heap->heap_thread; - DUK_ASSERT(obj != NULL); - DUK_ASSERT_VALSTACK_SPACE(heap->heap_thread, 1); - -#if defined(DUK_USE_ASSERTIONS) - entry_top = duk_get_top(thr); -#endif - /* - * Get and call the finalizer. All of this must be wrapped - * in a protected call, because even getting the finalizer - * may trigger an error (getter may throw one, for instance). - */ - - /* ROM objects could inherit a finalizer, but they are never deemed - * unreachable by mark-and-sweep, and their refcount never falls to 0. - */ - DUK_ASSERT(!DUK_HEAPHDR_HAS_READONLY((duk_heaphdr *) obj)); - - /* Duktape 2.1: finalize_list never contains objects with FINALIZED - * set, so no need to check here. - */ - DUK_ASSERT(!DUK_HEAPHDR_HAS_FINALIZED((duk_heaphdr *) obj)); -#if 0 - if (DUK_HEAPHDR_HAS_FINALIZED((duk_heaphdr *) obj)) { - DUK_D(DUK_DPRINT("object already finalized, avoid running finalizer twice: %!O", obj)); - return; - } -#endif - DUK_HEAPHDR_SET_FINALIZED((duk_heaphdr *) obj); /* ensure never re-entered until rescue cycle complete */ - -#if defined(DUK_USE_ES6_PROXY) - if (DUK_HOBJECT_IS_PROXY(obj)) { - /* This may happen if duk_set_finalizer() or Duktape.fin() is - * called for a Proxy object. In such cases the fast finalizer - * flag will be set on the Proxy, not the target, and neither - * will be finalized. - */ - DUK_D(DUK_DPRINT("object is a Proxy, skip finalizer call")); - return; - } -#endif /* DUK_USE_ES6_PROXY */ - - duk_push_hobject(thr, obj); /* this also increases refcount by one */ - rc = duk_safe_call(thr, duk__finalize_helper, NULL /*udata*/, 0 /*nargs*/, 1 /*nrets*/); /* -> [... obj retval/error] */ - DUK_ASSERT_TOP(thr, entry_top + 2); /* duk_safe_call discipline */ - - if (rc != DUK_EXEC_SUCCESS) { - /* Note: we ask for one return value from duk_safe_call to get this - * error debugging here. - */ - DUK_D(DUK_DPRINT("wrapped finalizer call failed for object %p (ignored); error: %!T", - (void *) obj, - (duk_tval *) duk_get_tval(thr, -1))); - } - duk_pop_2(thr); /* -> [...] */ - - DUK_ASSERT_TOP(thr, entry_top); -} - -#else /* DUK_USE_FINALIZER_SUPPORT */ - -/* nothing */ - -#endif /* DUK_USE_FINALIZER_SUPPORT */ -#line 1 "duk_heap_hashstring.c" -/* - * String hash computation (interning). - * - * String hashing is performance critical because a string hash is computed - * for all new strings which are candidates to be added to the string table. - * However, strings actually added to the string table go through a codepoint - * length calculation which dominates performance because it goes through - * every byte of the input string (but only for strings added). - * - * The string hash algorithm should be fast, but on the other hand provide - * good enough hashes to ensure both string table and object property table - * hash tables work reasonably well (i.e., there aren't too many collisions - * with real world inputs). Unless the hash is cryptographic, it's always - * possible to craft inputs with maximal hash collisions. - * - * NOTE: The hash algorithms must match tools/dukutil.py:duk_heap_hashstring() - * for ROM string support! - */ - -/* #include duk_internal.h -> already included */ - -#if defined(DUK_USE_STRHASH_DENSE) -/* Constants for duk_hashstring(). */ -#define DUK__STRHASH_SHORTSTRING 4096L -#define DUK__STRHASH_MEDIUMSTRING (256L * 1024L) -#define DUK__STRHASH_BLOCKSIZE 256L - -DUK_INTERNAL duk_uint32_t duk_heap_hashstring(duk_heap *heap, const duk_uint8_t *str, duk_size_t len) { - duk_uint32_t hash; - - /* Use Murmurhash2 directly for short strings, and use "block skipping" - * for long strings: hash an initial part and then sample the rest of - * the string with reasonably sized chunks. An initial offset for the - * sampling is computed based on a hash of the initial part of the string; - * this is done to (usually) avoid the case where all long strings have - * certain offset ranges which are never sampled. - * - * Skip should depend on length and bound the total time to roughly - * logarithmic. With current values: - * - * 1M string => 256 * 241 = 61696 bytes (0.06M) of hashing - * 1G string => 256 * 16321 = 4178176 bytes (3.98M) of hashing - * - * XXX: It would be better to compute the skip offset more "smoothly" - * instead of having a few boundary values. - */ - - /* note: mixing len into seed improves hashing when skipping */ - duk_uint32_t str_seed = heap->hash_seed ^ ((duk_uint32_t) len); - - if (len <= DUK__STRHASH_SHORTSTRING) { - hash = duk_util_hashbytes(str, len, str_seed); - } else { - duk_size_t off; - duk_size_t skip; - - if (len <= DUK__STRHASH_MEDIUMSTRING) { - skip = (duk_size_t) (16 * DUK__STRHASH_BLOCKSIZE + DUK__STRHASH_BLOCKSIZE); - } else { - skip = (duk_size_t) (256 * DUK__STRHASH_BLOCKSIZE + DUK__STRHASH_BLOCKSIZE); - } - - hash = duk_util_hashbytes(str, (duk_size_t) DUK__STRHASH_SHORTSTRING, str_seed); - off = DUK__STRHASH_SHORTSTRING + (skip * (hash % 256)) / 256; - - /* XXX: inefficient loop */ - while (off < len) { - duk_size_t left = len - off; - duk_size_t now = (duk_size_t) (left > DUK__STRHASH_BLOCKSIZE ? DUK__STRHASH_BLOCKSIZE : left); - hash ^= duk_util_hashbytes(str + off, now, str_seed); - off += skip; - } - } - -#if defined(DUK_USE_STRHASH16) - /* Truncate to 16 bits here, so that a computed hash can be compared - * against a hash stored in a 16-bit field. - */ - hash &= 0x0000ffffUL; -#endif - return hash; -} -#else /* DUK_USE_STRHASH_DENSE */ -DUK_INTERNAL duk_uint32_t duk_heap_hashstring(duk_heap *heap, const duk_uint8_t *str, duk_size_t len) { - duk_uint32_t hash; - duk_size_t step; - duk_size_t off; - - /* Slightly modified "Bernstein hash" from: - * - * http://eternallyconfuzzled.com/tuts/algorithms/jsw_tut_hashing.aspx - * - * Modifications: string skipping and reverse direction similar to - * Lua 5.1.5, and different hash initializer. - * - * The reverse direction ensures last byte it always included in the - * hash which is a good default as changing parts of the string are - * more often in the suffix than in the prefix. - */ - - hash = heap->hash_seed ^ ((duk_uint32_t) len); /* Bernstein hash init value is normally 5381 */ - step = (len >> DUK_USE_STRHASH_SKIP_SHIFT) + 1; - for (off = len; off >= step; off -= step) { - DUK_ASSERT(off >= 1); /* off >= step, and step >= 1 */ - hash = (hash * 33) + str[off - 1]; - } - -#if defined(DUK_USE_STRHASH16) - /* Truncate to 16 bits here, so that a computed hash can be compared - * against a hash stored in a 16-bit field. - */ - hash &= 0x0000ffffUL; -#endif - return hash; -} -#endif /* DUK_USE_STRHASH_DENSE */ - -/* automatic undefs */ -#undef DUK__STRHASH_BLOCKSIZE -#undef DUK__STRHASH_MEDIUMSTRING -#undef DUK__STRHASH_SHORTSTRING -#line 1 "duk_heap_markandsweep.c" -/* - * Mark-and-sweep garbage collection. - */ - -/* #include duk_internal.h -> already included */ - -DUK_LOCAL_DECL void duk__mark_heaphdr(duk_heap *heap, duk_heaphdr *h); -DUK_LOCAL_DECL void duk__mark_heaphdr_nonnull(duk_heap *heap, duk_heaphdr *h); -DUK_LOCAL_DECL void duk__mark_tval(duk_heap *heap, duk_tval *tv); -DUK_LOCAL_DECL void duk__mark_tvals(duk_heap *heap, duk_tval *tv, duk_idx_t count); - -/* - * Marking functions for heap types: mark children recursively. - */ - -DUK_LOCAL void duk__mark_hstring(duk_heap *heap, duk_hstring *h) { - DUK_UNREF(heap); - DUK_UNREF(h); - - DUK_DDD(DUK_DDDPRINT("duk__mark_hstring: %p", (void *) h)); - DUK_ASSERT(h); - DUK_HSTRING_ASSERT_VALID(h); - - /* nothing to process */ -} - -DUK_LOCAL void duk__mark_hobject(duk_heap *heap, duk_hobject *h) { - duk_uint_fast32_t i; - - DUK_DDD(DUK_DDDPRINT("duk__mark_hobject: %p", (void *) h)); - - DUK_ASSERT(h); - DUK_HOBJECT_ASSERT_VALID(h); - - /* XXX: use advancing pointers instead of index macros -> faster and smaller? */ - - for (i = 0; i < (duk_uint_fast32_t) DUK_HOBJECT_GET_ENEXT(h); i++) { - duk_hstring *key = DUK_HOBJECT_E_GET_KEY(heap, h, i); - if (key == NULL) { - continue; - } - duk__mark_heaphdr_nonnull(heap, (duk_heaphdr *) key); - if (DUK_HOBJECT_E_SLOT_IS_ACCESSOR(heap, h, i)) { - duk__mark_heaphdr(heap, (duk_heaphdr *) DUK_HOBJECT_E_GET_VALUE_PTR(heap, h, i)->a.get); - duk__mark_heaphdr(heap, (duk_heaphdr *) DUK_HOBJECT_E_GET_VALUE_PTR(heap, h, i)->a.set); - } else { - duk__mark_tval(heap, &DUK_HOBJECT_E_GET_VALUE_PTR(heap, h, i)->v); - } - } - - for (i = 0; i < (duk_uint_fast32_t) DUK_HOBJECT_GET_ASIZE(h); i++) { - duk__mark_tval(heap, DUK_HOBJECT_A_GET_VALUE_PTR(heap, h, i)); - } - - /* Hash part is a 'weak reference' and does not contribute. */ - - duk__mark_heaphdr(heap, (duk_heaphdr *) DUK_HOBJECT_GET_PROTOTYPE(heap, h)); - - /* Fast path for objects which don't have a subclass struct, or have a - * subclass struct but nothing that needs marking in the subclass struct. - */ - if (DUK_HOBJECT_HAS_FASTREFS(h)) { - DUK_ASSERT(DUK_HOBJECT_ALLOWS_FASTREFS(h)); - return; - } - DUK_ASSERT(DUK_HOBJECT_PROHIBITS_FASTREFS(h)); - - /* XXX: reorg, more common first */ - if (DUK_HOBJECT_IS_COMPFUNC(h)) { - duk_hcompfunc *f = (duk_hcompfunc *) h; - duk_tval *tv, *tv_end; - duk_hobject **fn, **fn_end; - - DUK_HCOMPFUNC_ASSERT_VALID(f); - - /* 'data' is reachable through every compiled function which - * contains a reference. - */ - - duk__mark_heaphdr(heap, (duk_heaphdr *) DUK_HCOMPFUNC_GET_DATA(heap, f)); - duk__mark_heaphdr(heap, (duk_heaphdr *) DUK_HCOMPFUNC_GET_LEXENV(heap, f)); - duk__mark_heaphdr(heap, (duk_heaphdr *) DUK_HCOMPFUNC_GET_VARENV(heap, f)); - - if (DUK_HCOMPFUNC_GET_DATA(heap, f) != NULL) { - tv = DUK_HCOMPFUNC_GET_CONSTS_BASE(heap, f); - tv_end = DUK_HCOMPFUNC_GET_CONSTS_END(heap, f); - while (tv < tv_end) { - duk__mark_tval(heap, tv); - tv++; - } - - fn = DUK_HCOMPFUNC_GET_FUNCS_BASE(heap, f); - fn_end = DUK_HCOMPFUNC_GET_FUNCS_END(heap, f); - while (fn < fn_end) { - duk__mark_heaphdr_nonnull(heap, (duk_heaphdr *) *fn); - fn++; - } - } else { - /* May happen in some out-of-memory corner cases. */ - DUK_D(DUK_DPRINT("duk_hcompfunc 'data' is NULL, skipping marking")); - } - } else if (DUK_HOBJECT_IS_DECENV(h)) { - duk_hdecenv *e = (duk_hdecenv *) h; - DUK_HDECENV_ASSERT_VALID(e); - duk__mark_heaphdr(heap, (duk_heaphdr *) e->thread); - duk__mark_heaphdr(heap, (duk_heaphdr *) e->varmap); - } else if (DUK_HOBJECT_IS_OBJENV(h)) { - duk_hobjenv *e = (duk_hobjenv *) h; - DUK_HOBJENV_ASSERT_VALID(e); - duk__mark_heaphdr_nonnull(heap, (duk_heaphdr *) e->target); -#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) - } else if (DUK_HOBJECT_IS_BUFOBJ(h)) { - duk_hbufobj *b = (duk_hbufobj *) h; - DUK_HBUFOBJ_ASSERT_VALID(b); - duk__mark_heaphdr(heap, (duk_heaphdr *) b->buf); - duk__mark_heaphdr(heap, (duk_heaphdr *) b->buf_prop); -#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ - } else if (DUK_HOBJECT_IS_BOUNDFUNC(h)) { - duk_hboundfunc *f = (duk_hboundfunc *) (void *) h; - DUK_HBOUNDFUNC_ASSERT_VALID(f); - duk__mark_tval(heap, &f->target); - duk__mark_tval(heap, &f->this_binding); - duk__mark_tvals(heap, f->args, f->nargs); -#if defined(DUK_USE_ES6_PROXY) - } else if (DUK_HOBJECT_IS_PROXY(h)) { - duk_hproxy *p = (duk_hproxy *) h; - DUK_HPROXY_ASSERT_VALID(p); - duk__mark_heaphdr_nonnull(heap, (duk_heaphdr *) p->target); - duk__mark_heaphdr_nonnull(heap, (duk_heaphdr *) p->handler); -#endif /* DUK_USE_ES6_PROXY */ - } else if (DUK_HOBJECT_IS_THREAD(h)) { - duk_hthread *t = (duk_hthread *) h; - duk_activation *act; - duk_tval *tv; - - DUK_HTHREAD_ASSERT_VALID(t); - - tv = t->valstack; - while (tv < t->valstack_top) { - duk__mark_tval(heap, tv); - tv++; - } - - for (act = t->callstack_curr; act != NULL; act = act->parent) { - duk__mark_heaphdr(heap, (duk_heaphdr *) DUK_ACT_GET_FUNC(act)); - duk__mark_heaphdr(heap, (duk_heaphdr *) act->var_env); - duk__mark_heaphdr(heap, (duk_heaphdr *) act->lex_env); -#if defined(DUK_USE_NONSTD_FUNC_CALLER_PROPERTY) - duk__mark_heaphdr(heap, (duk_heaphdr *) act->prev_caller); -#endif -#if 0 /* nothing now */ - for (cat = act->cat; cat != NULL; cat = cat->parent) { - } -#endif - } - - duk__mark_heaphdr(heap, (duk_heaphdr *) t->resumer); - - for (i = 0; i < DUK_NUM_BUILTINS; i++) { - duk__mark_heaphdr(heap, (duk_heaphdr *) t->builtins[i]); - } - } else { - /* We may come here if the object should have a FASTREFS flag - * but it's missing for some reason. Assert for never getting - * here; however, other than performance, this is harmless. - */ - DUK_D(DUK_DPRINT("missing FASTREFS flag for: %!iO", h)); - DUK_ASSERT(0); - } -} - -/* Mark any duk_heaphdr type. Recursion tracking happens only here. */ -DUK_LOCAL void duk__mark_heaphdr(duk_heap *heap, duk_heaphdr *h) { - DUK_DDD( - DUK_DDDPRINT("duk__mark_heaphdr %p, type %ld", (void *) h, (h != NULL ? (long) DUK_HEAPHDR_GET_TYPE(h) : (long) -1))); - - /* XXX: add non-null variant? */ - if (h == NULL) { - return; - } - - DUK_HEAPHDR_ASSERT_VALID(h); - DUK_ASSERT(!DUK_HEAPHDR_HAS_READONLY(h) || DUK_HEAPHDR_HAS_REACHABLE(h)); - -#if defined(DUK_USE_ASSERTIONS) && defined(DUK_USE_REFERENCE_COUNTING) - if (!DUK_HEAPHDR_HAS_READONLY(h)) { - h->h_assert_refcount++; /* Comparison refcount: bump even if already reachable. */ - } -#endif - if (DUK_HEAPHDR_HAS_REACHABLE(h)) { - DUK_DDD(DUK_DDDPRINT("already marked reachable, skip")); - return; - } -#if defined(DUK_USE_ROM_OBJECTS) - /* READONLY objects always have REACHABLE set, so the check above - * will prevent READONLY objects from being marked here. - */ - DUK_ASSERT(!DUK_HEAPHDR_HAS_READONLY(h)); -#endif - - DUK_HEAPHDR_SET_REACHABLE(h); - - if (heap->ms_recursion_depth >= DUK_USE_MARK_AND_SWEEP_RECLIMIT) { - DUK_D(DUK_DPRINT("mark-and-sweep recursion limit reached, marking as temproot: %p", (void *) h)); - DUK_HEAP_SET_MARKANDSWEEP_RECLIMIT_REACHED(heap); - DUK_HEAPHDR_SET_TEMPROOT(h); - return; - } - - heap->ms_recursion_depth++; - DUK_ASSERT(heap->ms_recursion_depth != 0); /* Wrap. */ - - switch (DUK_HEAPHDR_GET_TYPE(h)) { - case DUK_HTYPE_STRING: - duk__mark_hstring(heap, (duk_hstring *) h); - break; - case DUK_HTYPE_OBJECT: - duk__mark_hobject(heap, (duk_hobject *) h); - break; - case DUK_HTYPE_BUFFER: - /* nothing to mark */ - break; - default: - DUK_D(DUK_DPRINT("attempt to mark heaphdr %p with invalid htype %ld", (void *) h, (long) DUK_HEAPHDR_GET_TYPE(h))); - DUK_UNREACHABLE(); - } - - DUK_ASSERT(heap->ms_recursion_depth > 0); - heap->ms_recursion_depth--; -} - -DUK_LOCAL void duk__mark_tval(duk_heap *heap, duk_tval *tv) { - DUK_DDD(DUK_DDDPRINT("duk__mark_tval %p", (void *) tv)); - if (tv == NULL) { - return; - } - DUK_TVAL_ASSERT_VALID(tv); - if (DUK_TVAL_IS_HEAP_ALLOCATED(tv)) { - duk_heaphdr *h; - h = DUK_TVAL_GET_HEAPHDR(tv); - DUK_ASSERT(h != NULL); - duk__mark_heaphdr_nonnull(heap, h); - } -} - -DUK_LOCAL void duk__mark_tvals(duk_heap *heap, duk_tval *tv, duk_idx_t count) { - DUK_ASSERT(count == 0 || tv != NULL); - - while (count-- > 0) { - DUK_TVAL_ASSERT_VALID(tv); - if (DUK_TVAL_IS_HEAP_ALLOCATED(tv)) { - duk_heaphdr *h; - h = DUK_TVAL_GET_HEAPHDR(tv); - DUK_ASSERT(h != NULL); - duk__mark_heaphdr_nonnull(heap, h); - } - tv++; - } -} - -/* Mark any duk_heaphdr type, caller guarantees a non-NULL pointer. */ -DUK_LOCAL void duk__mark_heaphdr_nonnull(duk_heap *heap, duk_heaphdr *h) { - /* For now, just call the generic handler. Change when call sites - * are changed too. - */ - duk__mark_heaphdr(heap, h); -} - -/* - * Mark the heap. - */ - -DUK_LOCAL void duk__mark_roots_heap(duk_heap *heap) { - duk_small_uint_t i; - - DUK_DD(DUK_DDPRINT("duk__mark_roots_heap: %p", (void *) heap)); - - duk__mark_heaphdr(heap, (duk_heaphdr *) heap->heap_thread); - duk__mark_heaphdr(heap, (duk_heaphdr *) heap->heap_object); - - for (i = 0; i < DUK_HEAP_NUM_STRINGS; i++) { - duk_hstring *h = DUK_HEAP_GET_STRING(heap, i); - duk__mark_heaphdr(heap, (duk_heaphdr *) h); - } - - duk__mark_tval(heap, &heap->lj.value1); - duk__mark_tval(heap, &heap->lj.value2); - -#if defined(DUK_USE_DEBUGGER_SUPPORT) - for (i = 0; i < heap->dbg_breakpoint_count; i++) { - duk__mark_heaphdr(heap, (duk_heaphdr *) heap->dbg_breakpoints[i].filename); - } -#endif -} - -/* - * Mark unreachable, finalizable objects. - * - * Such objects will be moved aside and their finalizers run later. They - * have to be treated as reachability roots for their properties etc to - * remain allocated. This marking is only done for unreachable values which - * would be swept later. - * - * Objects are first marked FINALIZABLE and only then marked as reachability - * roots; otherwise circular references might be handled inconsistently. - */ - -#if defined(DUK_USE_FINALIZER_SUPPORT) -DUK_LOCAL void duk__mark_finalizable(duk_heap *heap) { - duk_heaphdr *hdr; - duk_size_t count_finalizable = 0; - - DUK_DD(DUK_DDPRINT("duk__mark_finalizable: %p", (void *) heap)); - - DUK_ASSERT(heap->heap_thread != NULL); - - hdr = heap->heap_allocated; - while (hdr != NULL) { - /* A finalizer is looked up from the object and up its - * prototype chain (which allows inherited finalizers). - * The finalizer is checked for using a duk_hobject flag - * which is kept in sync with the presence and callability - * of a _Finalizer hidden symbol. - */ - - if (!DUK_HEAPHDR_HAS_REACHABLE(hdr) && DUK_HEAPHDR_IS_OBJECT(hdr) && !DUK_HEAPHDR_HAS_FINALIZED(hdr) && - DUK_HOBJECT_HAS_FINALIZER_FAST(heap, (duk_hobject *) hdr)) { - /* heaphdr: - * - is not reachable - * - is an object - * - is not a finalized object waiting for rescue/keep decision - * - has a finalizer - */ - - DUK_DD(DUK_DDPRINT("unreachable heap object will be " - "finalized -> mark as finalizable " - "and treat as a reachability root: %p", - (void *) hdr)); - DUK_ASSERT(!DUK_HEAPHDR_HAS_READONLY(hdr)); - DUK_HEAPHDR_SET_FINALIZABLE(hdr); - count_finalizable++; - } - - hdr = DUK_HEAPHDR_GET_NEXT(heap, hdr); - } - - if (count_finalizable == 0) { - return; - } - - DUK_DD(DUK_DDPRINT("marked %ld heap objects as finalizable, now mark them reachable", (long) count_finalizable)); - - hdr = heap->heap_allocated; - while (hdr != NULL) { - if (DUK_HEAPHDR_HAS_FINALIZABLE(hdr)) { - duk__mark_heaphdr_nonnull(heap, hdr); - } - - hdr = DUK_HEAPHDR_GET_NEXT(heap, hdr); - } - - /* Caller will finish the marking process if we hit a recursion limit. */ -} -#endif /* DUK_USE_FINALIZER_SUPPORT */ - -/* - * Mark objects on finalize_list. - */ - -#if defined(DUK_USE_FINALIZER_SUPPORT) -DUK_LOCAL void duk__mark_finalize_list(duk_heap *heap) { - duk_heaphdr *hdr; -#if defined(DUK_USE_DEBUG) - duk_size_t count_finalize_list = 0; -#endif - - DUK_DD(DUK_DDPRINT("duk__mark_finalize_list: %p", (void *) heap)); - - hdr = heap->finalize_list; - while (hdr != NULL) { - duk__mark_heaphdr_nonnull(heap, hdr); - hdr = DUK_HEAPHDR_GET_NEXT(heap, hdr); -#if defined(DUK_USE_DEBUG) - count_finalize_list++; -#endif - } - -#if defined(DUK_USE_DEBUG) - if (count_finalize_list > 0) { - DUK_D(DUK_DPRINT("marked %ld objects on the finalize_list as reachable (previous finalizer run skipped)", - (long) count_finalize_list)); - } -#endif -} -#endif /* DUK_USE_FINALIZER_SUPPORT */ - -/* - * Fallback marking handler if recursion limit is reached. - * - * Iterates 'temproots' until recursion limit is no longer hit. Temproots - * can be in heap_allocated or finalize_list; refzero_list is now always - * empty for mark-and-sweep. A temproot may occur in finalize_list now if - * there are objects on the finalize_list and user code creates a reference - * from an object in heap_allocated to the object in finalize_list (which is - * now allowed), and it happened to coincide with the recursion depth limit. - * - * This is a slow scan, but guarantees that we finish with a bounded C stack. - * - * Note that nodes may have been marked as temproots before this scan begun, - * OR they may have been marked during the scan (as we process nodes - * recursively also during the scan). This is intended behavior. - */ - -#if defined(DUK_USE_DEBUG) -DUK_LOCAL void duk__handle_temproot(duk_heap *heap, duk_heaphdr *hdr, duk_size_t *count) { -#else -DUK_LOCAL void duk__handle_temproot(duk_heap *heap, duk_heaphdr *hdr) { -#endif - DUK_ASSERT(hdr != NULL); - - if (!DUK_HEAPHDR_HAS_TEMPROOT(hdr)) { - DUK_DDD(DUK_DDDPRINT("not a temp root: %p", (void *) hdr)); - return; - } - - DUK_DDD(DUK_DDDPRINT("found a temp root: %p", (void *) hdr)); - DUK_HEAPHDR_CLEAR_TEMPROOT(hdr); - DUK_HEAPHDR_CLEAR_REACHABLE(hdr); /* Done so that duk__mark_heaphdr() works correctly. */ -#if defined(DUK_USE_ASSERTIONS) && defined(DUK_USE_REFERENCE_COUNTING) - hdr->h_assert_refcount--; /* Same node visited twice. */ -#endif - duk__mark_heaphdr_nonnull(heap, hdr); - -#if defined(DUK_USE_DEBUG) - (*count)++; -#endif -} - -DUK_LOCAL void duk__mark_temproots_by_heap_scan(duk_heap *heap) { - duk_heaphdr *hdr; -#if defined(DUK_USE_DEBUG) - duk_size_t count; -#endif - - DUK_DD(DUK_DDPRINT("duk__mark_temproots_by_heap_scan: %p", (void *) heap)); - - while (DUK_HEAP_HAS_MARKANDSWEEP_RECLIMIT_REACHED(heap)) { - DUK_DD(DUK_DDPRINT("recursion limit reached, doing heap scan to continue from temproots")); - -#if defined(DUK_USE_DEBUG) - count = 0; -#endif - DUK_HEAP_CLEAR_MARKANDSWEEP_RECLIMIT_REACHED(heap); - - hdr = heap->heap_allocated; - while (hdr) { -#if defined(DUK_USE_DEBUG) - duk__handle_temproot(heap, hdr, &count); -#else - duk__handle_temproot(heap, hdr); -#endif - hdr = DUK_HEAPHDR_GET_NEXT(heap, hdr); - } - -#if defined(DUK_USE_FINALIZER_SUPPORT) - hdr = heap->finalize_list; - while (hdr) { -#if defined(DUK_USE_DEBUG) - duk__handle_temproot(heap, hdr, &count); -#else - duk__handle_temproot(heap, hdr); -#endif - hdr = DUK_HEAPHDR_GET_NEXT(heap, hdr); - } -#endif - -#if defined(DUK_USE_DEBUG) - DUK_DD(DUK_DDPRINT("temproot mark heap scan processed %ld temp roots", (long) count)); -#endif - } -} - -/* - * Finalize refcounts for heap elements just about to be freed. - * This must be done for all objects before freeing to avoid any - * stale pointer dereferences. - * - * Note that this must deduce the set of objects to be freed - * identically to duk__sweep_heap(). - */ - -#if defined(DUK_USE_REFERENCE_COUNTING) -DUK_LOCAL void duk__finalize_refcounts(duk_heap *heap) { - duk_heaphdr *hdr; - - DUK_ASSERT(heap->heap_thread != NULL); - - DUK_DD(DUK_DDPRINT("duk__finalize_refcounts: heap=%p", (void *) heap)); - - hdr = heap->heap_allocated; - while (hdr) { - if (!DUK_HEAPHDR_HAS_REACHABLE(hdr)) { - /* - * Unreachable object about to be swept. Finalize target refcounts - * (objects which the unreachable object points to) without doing - * refzero processing. Recursive decrefs are also prevented when - * refzero processing is disabled. - * - * Value cannot be a finalizable object, as they have been made - * temporarily reachable for this round. - */ - - DUK_DDD(DUK_DDDPRINT("unreachable object, refcount finalize before sweeping: %p", (void *) hdr)); - - /* Finalize using heap->heap_thread; DECREF has a - * suppress check for mark-and-sweep which is based - * on heap->ms_running. - */ - duk_heaphdr_refcount_finalize_norz(heap, hdr); - } - - hdr = DUK_HEAPHDR_GET_NEXT(heap, hdr); - } -} -#endif /* DUK_USE_REFERENCE_COUNTING */ - -/* - * Clear (reachable) flags of finalize_list. - * - * We could mostly do in the sweep phase when we move objects from the - * heap into the finalize_list. However, if a finalizer run is skipped - * during a mark-and-sweep, the objects on the finalize_list will be marked - * reachable during the next mark-and-sweep. Since they're already on the - * finalize_list, no-one will be clearing their REACHABLE flag so we do it - * here. (This now overlaps with the sweep handling in a harmless way.) - */ - -#if defined(DUK_USE_FINALIZER_SUPPORT) -DUK_LOCAL void duk__clear_finalize_list_flags(duk_heap *heap) { - duk_heaphdr *hdr; - - DUK_DD(DUK_DDPRINT("duk__clear_finalize_list_flags: %p", (void *) heap)); - - hdr = heap->finalize_list; - while (hdr) { - DUK_HEAPHDR_CLEAR_REACHABLE(hdr); -#if defined(DUK_USE_ASSERTIONS) - DUK_ASSERT(DUK_HEAPHDR_HAS_FINALIZABLE(hdr) || (heap->currently_finalizing == hdr)); -#endif - /* DUK_HEAPHDR_FLAG_FINALIZED may be set. */ - DUK_ASSERT(!DUK_HEAPHDR_HAS_TEMPROOT(hdr)); - hdr = DUK_HEAPHDR_GET_NEXT(heap, hdr); - } -} -#endif /* DUK_USE_FINALIZER_SUPPORT */ - -/* - * Sweep stringtable. - */ - -DUK_LOCAL void duk__sweep_stringtable(duk_heap *heap, duk_size_t *out_count_keep) { - duk_hstring *h; - duk_hstring *prev; - duk_uint32_t i; -#if defined(DUK_USE_DEBUG) - duk_size_t count_free = 0; -#endif - duk_size_t count_keep = 0; - - DUK_DD(DUK_DDPRINT("duk__sweep_stringtable: %p", (void *) heap)); - -#if defined(DUK_USE_STRTAB_PTRCOMP) - if (heap->strtable16 == NULL) { -#else - if (heap->strtable == NULL) { -#endif - goto done; - } - - for (i = 0; i < heap->st_size; i++) { -#if defined(DUK_USE_STRTAB_PTRCOMP) - h = DUK_USE_HEAPPTR_DEC16(heap->heap_udata, heap->strtable16[i]); -#else - h = heap->strtable[i]; -#endif - prev = NULL; - while (h != NULL) { - duk_hstring *next; - next = h->hdr.h_next; - - if (DUK_HEAPHDR_HAS_REACHABLE((duk_heaphdr *) h)) { - DUK_HEAPHDR_CLEAR_REACHABLE((duk_heaphdr *) h); - count_keep++; - prev = h; - } else { -#if defined(DUK_USE_DEBUG) - count_free++; -#endif - - /* For pinned strings the refcount has been - * bumped. We could unbump it here before - * freeing, but that's actually not necessary - * except for assertions. - */ -#if 0 - if (DUK_HSTRING_HAS_PINNED_LITERAL(h)) { - DUK_ASSERT(DUK_HEAPHDR_GET_REFCOUNT((duk_heaphdr *) h) > 0U); - DUK_HSTRING_DECREF_NORZ(heap->heap_thread, h); - DUK_HSTRING_CLEAR_PINNED_LITERAL(h); - } -#endif -#if defined(DUK_USE_REFERENCE_COUNTING) - /* Non-zero refcounts should not happen for unreachable strings, - * because we refcount finalize all unreachable objects which - * should have decreased unreachable string refcounts to zero - * (even for cycles). However, pinned strings have a +1 bump. - */ - DUK_ASSERT(DUK_HEAPHDR_GET_REFCOUNT((duk_heaphdr *) h) == DUK_HSTRING_HAS_PINNED_LITERAL(h) ? 1U : - 0U); -#endif - - /* Deal with weak references first. */ - duk_heap_strcache_string_remove(heap, (duk_hstring *) h); - - /* Remove the string from the string table. */ - duk_heap_strtable_unlink_prev(heap, (duk_hstring *) h, (duk_hstring *) prev); - - /* Free inner references (these exist e.g. when external - * strings are enabled) and the struct itself. - */ - duk_free_hstring(heap, (duk_hstring *) h); - - /* Don't update 'prev'; it should be last string kept. */ - } - - h = next; - } - } - -done: -#if defined(DUK_USE_DEBUG) - DUK_D(DUK_DPRINT("mark-and-sweep sweep stringtable: %ld freed, %ld kept", (long) count_free, (long) count_keep)); -#endif - *out_count_keep = count_keep; -} - -/* - * Sweep heap. - */ - -DUK_LOCAL void duk__sweep_heap(duk_heap *heap, duk_small_uint_t flags, duk_size_t *out_count_keep) { - duk_heaphdr *prev; /* last element that was left in the heap */ - duk_heaphdr *curr; - duk_heaphdr *next; -#if defined(DUK_USE_DEBUG) - duk_size_t count_free = 0; - duk_size_t count_finalize = 0; - duk_size_t count_rescue = 0; -#endif - duk_size_t count_keep = 0; - - DUK_DD(DUK_DDPRINT("duk__sweep_heap: %p", (void *) heap)); - - prev = NULL; - curr = heap->heap_allocated; - heap->heap_allocated = NULL; - while (curr) { - /* Strings and ROM objects are never placed on the heap allocated list. */ - DUK_ASSERT(DUK_HEAPHDR_GET_TYPE(curr) != DUK_HTYPE_STRING); - DUK_ASSERT(!DUK_HEAPHDR_HAS_READONLY(curr)); - - next = DUK_HEAPHDR_GET_NEXT(heap, curr); - - if (DUK_HEAPHDR_HAS_REACHABLE(curr)) { - /* - * Reachable object: - * - If FINALIZABLE -> actually unreachable (but marked - * artificially reachable), queue to finalize_list. - * - If !FINALIZABLE but FINALIZED -> rescued after - * finalizer execution. - * - Otherwise just a normal, reachable object. - * - * Objects which are kept are queued to heap_allocated - * tail (we're essentially filtering heap_allocated in - * practice). - */ - -#if defined(DUK_USE_FINALIZER_SUPPORT) - if (DUK_UNLIKELY(DUK_HEAPHDR_HAS_FINALIZABLE(curr))) { - DUK_ASSERT(!DUK_HEAPHDR_HAS_FINALIZED(curr)); - DUK_ASSERT(DUK_HEAPHDR_GET_TYPE(curr) == DUK_HTYPE_OBJECT); - DUK_DD(DUK_DDPRINT("sweep; reachable, finalizable --> move to finalize_list: %p", (void *) curr)); - -#if defined(DUK_USE_REFERENCE_COUNTING) - DUK_HEAPHDR_PREINC_REFCOUNT( - curr); /* Bump refcount so that refzero never occurs when pending a finalizer call. */ -#endif - DUK_HEAP_INSERT_INTO_FINALIZE_LIST(heap, curr); -#if defined(DUK_USE_DEBUG) - count_finalize++; -#endif - } else -#endif /* DUK_USE_FINALIZER_SUPPORT */ - { - if (DUK_UNLIKELY(DUK_HEAPHDR_HAS_FINALIZED(curr))) { - DUK_ASSERT(!DUK_HEAPHDR_HAS_FINALIZABLE(curr)); - DUK_ASSERT(DUK_HEAPHDR_GET_TYPE(curr) == DUK_HTYPE_OBJECT); - - if (flags & DUK_MS_FLAG_POSTPONE_RESCUE) { - DUK_DD(DUK_DDPRINT("sweep; reachable, finalized, but postponing rescue decisions " - "--> keep object (with FINALIZED set): %!iO", - curr)); - count_keep++; - } else { - DUK_DD(DUK_DDPRINT("sweep; reachable, finalized --> rescued after finalization: %p", - (void *) curr)); -#if defined(DUK_USE_FINALIZER_SUPPORT) - DUK_HEAPHDR_CLEAR_FINALIZED(curr); -#endif -#if defined(DUK_USE_DEBUG) - count_rescue++; -#endif - } - } else { - DUK_DD(DUK_DDPRINT("sweep; reachable --> keep: %!iO", curr)); - count_keep++; - } - - if (prev != NULL) { - DUK_ASSERT(heap->heap_allocated != NULL); - DUK_HEAPHDR_SET_NEXT(heap, prev, curr); - } else { - DUK_ASSERT(heap->heap_allocated == NULL); - heap->heap_allocated = curr; - } -#if defined(DUK_USE_DOUBLE_LINKED_HEAP) - DUK_HEAPHDR_SET_PREV(heap, curr, prev); -#endif - DUK_HEAPHDR_ASSERT_LINKS(heap, prev); - DUK_HEAPHDR_ASSERT_LINKS(heap, curr); - prev = curr; - } - - /* - * Shrink check for value stacks here. We're inside - * ms_prevent_count protection which prevents recursive - * mark-and-sweep and refzero finalizers, so there are - * no side effects that would affect the heap lists. - */ - if (DUK_HEAPHDR_IS_OBJECT(curr) && DUK_HOBJECT_IS_THREAD((duk_hobject *) curr)) { - duk_hthread *thr_curr = (duk_hthread *) curr; - DUK_DD(DUK_DDPRINT("value stack shrink check for thread: %!O", curr)); - duk_valstack_shrink_check_nothrow(thr_curr, flags & DUK_MS_FLAG_EMERGENCY /*snug*/); - } - - DUK_HEAPHDR_CLEAR_REACHABLE(curr); - /* Keep FINALIZED if set, used if rescue decisions are postponed. */ - /* Keep FINALIZABLE for objects on finalize_list. */ - DUK_ASSERT(!DUK_HEAPHDR_HAS_REACHABLE(curr)); - } else { - /* - * Unreachable object: - * - If FINALIZED, object was finalized but not - * rescued. This doesn't affect freeing. - * - Otherwise normal unreachable object. - * - * There's no guard preventing a FINALIZED object - * from being freed while finalizers execute: the - * artificial finalize_list reachability roots can't - * cause an incorrect free decision (but can cause - * an incorrect rescue decision). - */ - -#if defined(DUK_USE_REFERENCE_COUNTING) - /* Non-zero refcounts should not happen because we refcount - * finalize all unreachable objects which should cancel out - * refcounts (even for cycles). - */ - DUK_ASSERT(DUK_HEAPHDR_GET_REFCOUNT(curr) == 0); -#endif - DUK_ASSERT(!DUK_HEAPHDR_HAS_FINALIZABLE(curr)); - -#if defined(DUK_USE_DEBUG) - if (DUK_HEAPHDR_HAS_FINALIZED(curr)) { - DUK_DD(DUK_DDPRINT("sweep; unreachable, finalized --> finalized object not rescued: %p", - (void *) curr)); - } else { - DUK_DD(DUK_DDPRINT("sweep; not reachable --> free: %p", (void *) curr)); - } - -#endif - - /* Note: object cannot be a finalizable unreachable object, as - * they have been marked temporarily reachable for this round, - * and are handled above. - */ - -#if defined(DUK_USE_DEBUG) - count_free++; -#endif - - /* Weak refs should be handled here, but no weak refs for - * any non-string objects exist right now. - */ - - /* Free object and all auxiliary (non-heap) allocs. */ - duk_heap_free_heaphdr_raw(heap, curr); - } - - curr = next; - } - - if (prev != NULL) { - DUK_HEAPHDR_SET_NEXT(heap, prev, NULL); - } - DUK_HEAPHDR_ASSERT_LINKS(heap, prev); - -#if defined(DUK_USE_DEBUG) - DUK_D(DUK_DPRINT("mark-and-sweep sweep objects (non-string): %ld freed, %ld kept, %ld rescued, %ld queued for finalization", - (long) count_free, - (long) count_keep, - (long) count_rescue, - (long) count_finalize)); -#endif - *out_count_keep = count_keep; -} - -/* - * Litcache helpers. - */ - -#if defined(DUK_USE_LITCACHE_SIZE) -DUK_LOCAL void duk__wipe_litcache(duk_heap *heap) { - duk_uint_t i; - duk_litcache_entry *e; - - e = heap->litcache; - for (i = 0; i < DUK_USE_LITCACHE_SIZE; i++) { - e->addr = NULL; - /* e->h does not need to be invalidated: when e->addr is - * NULL, e->h is considered garbage. - */ - e++; - } -} -#endif /* DUK_USE_LITCACHE_SIZE */ - -/* - * Object compaction. - * - * Compaction is assumed to never throw an error. - */ - -DUK_LOCAL int duk__protected_compact_object(duk_hthread *thr, void *udata) { - duk_hobject *obj; - /* XXX: for threads, compact stacks? */ - - DUK_UNREF(udata); - obj = duk_known_hobject(thr, -1); - duk_hobject_compact_props(thr, obj); - return 0; -} - -#if defined(DUK_USE_DEBUG) -DUK_LOCAL void duk__compact_object_list(duk_heap *heap, - duk_hthread *thr, - duk_heaphdr *start, - duk_size_t *p_count_check, - duk_size_t *p_count_compact, - duk_size_t *p_count_bytes_saved) { -#else -DUK_LOCAL void duk__compact_object_list(duk_heap *heap, duk_hthread *thr, duk_heaphdr *start) { -#endif - duk_heaphdr *curr; -#if defined(DUK_USE_DEBUG) - duk_size_t old_size, new_size; -#endif - duk_hobject *obj; - - DUK_UNREF(heap); - - curr = start; - while (curr) { - DUK_DDD(DUK_DDDPRINT("mark-and-sweep compact: %p", (void *) curr)); - - if (DUK_HEAPHDR_GET_TYPE(curr) != DUK_HTYPE_OBJECT) { - goto next; - } - obj = (duk_hobject *) curr; - -#if defined(DUK_USE_DEBUG) - old_size = - DUK_HOBJECT_P_COMPUTE_SIZE(DUK_HOBJECT_GET_ESIZE(obj), DUK_HOBJECT_GET_ASIZE(obj), DUK_HOBJECT_GET_HSIZE(obj)); -#endif - - DUK_DD(DUK_DDPRINT("compact object: %p", (void *) obj)); - duk_push_hobject(thr, obj); - /* XXX: disable error handlers for duration of compaction? */ - duk_safe_call(thr, duk__protected_compact_object, NULL, 1, 0); - -#if defined(DUK_USE_DEBUG) - new_size = - DUK_HOBJECT_P_COMPUTE_SIZE(DUK_HOBJECT_GET_ESIZE(obj), DUK_HOBJECT_GET_ASIZE(obj), DUK_HOBJECT_GET_HSIZE(obj)); -#endif - -#if defined(DUK_USE_DEBUG) - (*p_count_compact)++; - (*p_count_bytes_saved) += (duk_size_t) (old_size - new_size); -#endif - - next: - curr = DUK_HEAPHDR_GET_NEXT(heap, curr); -#if defined(DUK_USE_DEBUG) - (*p_count_check)++; -#endif - } -} - -DUK_LOCAL void duk__compact_objects(duk_heap *heap) { - /* XXX: which lists should participate? to be finalized? */ -#if defined(DUK_USE_DEBUG) - duk_size_t count_check = 0; - duk_size_t count_compact = 0; - duk_size_t count_bytes_saved = 0; -#endif - - DUK_DD(DUK_DDPRINT("duk__compact_objects: %p", (void *) heap)); - - DUK_ASSERT(heap->heap_thread != NULL); - -#if defined(DUK_USE_DEBUG) - duk__compact_object_list(heap, heap->heap_thread, heap->heap_allocated, &count_check, &count_compact, &count_bytes_saved); -#if defined(DUK_USE_FINALIZER_SUPPORT) - duk__compact_object_list(heap, heap->heap_thread, heap->finalize_list, &count_check, &count_compact, &count_bytes_saved); -#endif -#else - duk__compact_object_list(heap, heap->heap_thread, heap->heap_allocated); -#if defined(DUK_USE_FINALIZER_SUPPORT) - duk__compact_object_list(heap, heap->heap_thread, heap->finalize_list); -#endif -#endif -#if defined(DUK_USE_REFERENCE_COUNTING) - DUK_ASSERT(heap->refzero_list == NULL); /* Always handled to completion inline in DECREF. */ -#endif - -#if defined(DUK_USE_DEBUG) - DUK_D(DUK_DPRINT("mark-and-sweep compact objects: %ld checked, %ld compaction attempts, %ld bytes saved by compaction", - (long) count_check, - (long) count_compact, - (long) count_bytes_saved)); -#endif -} - -/* - * Assertion helpers. - */ - -#if defined(DUK_USE_ASSERTIONS) -typedef void (*duk__gc_heaphdr_assert)(duk_heap *heap, duk_heaphdr *h); -typedef void (*duk__gc_hstring_assert)(duk_heap *heap, duk_hstring *h); - -DUK_LOCAL void duk__assert_walk_list(duk_heap *heap, duk_heaphdr *start, duk__gc_heaphdr_assert func) { - duk_heaphdr *curr; - for (curr = start; curr != NULL; curr = DUK_HEAPHDR_GET_NEXT(heap, curr)) { - func(heap, curr); - } -} - -DUK_LOCAL void duk__assert_walk_strtable(duk_heap *heap, duk__gc_hstring_assert func) { - duk_uint32_t i; - - for (i = 0; i < heap->st_size; i++) { - duk_hstring *h; - -#if defined(DUK_USE_STRTAB_PTRCOMP) - h = DUK_USE_HEAPPTR_DEC16(heap->heap_udata, heap->strtable16[i]); -#else - h = heap->strtable[i]; -#endif - while (h != NULL) { - func(heap, h); - h = h->hdr.h_next; - } - } -} - -DUK_LOCAL void duk__assert_heaphdr_flags_cb(duk_heap *heap, duk_heaphdr *h) { - DUK_UNREF(heap); - DUK_ASSERT(!DUK_HEAPHDR_HAS_REACHABLE(h)); - DUK_ASSERT(!DUK_HEAPHDR_HAS_TEMPROOT(h)); - DUK_ASSERT(!DUK_HEAPHDR_HAS_FINALIZABLE(h)); - /* may have FINALIZED */ -} -DUK_LOCAL void duk__assert_heaphdr_flags(duk_heap *heap) { - duk__assert_walk_list(heap, heap->heap_allocated, duk__assert_heaphdr_flags_cb); -#if defined(DUK_USE_REFERENCE_COUNTING) - DUK_ASSERT(heap->refzero_list == NULL); /* Always handled to completion inline in DECREF. */ -#endif - /* XXX: Assertions for finalize_list? */ -} - -DUK_LOCAL void duk__assert_validity_cb1(duk_heap *heap, duk_heaphdr *h) { - DUK_UNREF(heap); - DUK_ASSERT(DUK_HEAPHDR_IS_OBJECT(h) || DUK_HEAPHDR_IS_BUFFER(h)); - duk_heaphdr_assert_valid_subclassed(h); -} -DUK_LOCAL void duk__assert_validity_cb2(duk_heap *heap, duk_hstring *h) { - DUK_UNREF(heap); - DUK_ASSERT(DUK_HEAPHDR_IS_STRING((duk_heaphdr *) h)); - duk_heaphdr_assert_valid_subclassed((duk_heaphdr *) h); -} -DUK_LOCAL void duk__assert_validity(duk_heap *heap) { - duk__assert_walk_list(heap, heap->heap_allocated, duk__assert_validity_cb1); -#if defined(DUK_USE_FINALIZER_SUPPORT) - duk__assert_walk_list(heap, heap->finalize_list, duk__assert_validity_cb1); -#endif -#if defined(DUK_USE_REFERENCE_COUNTING) - duk__assert_walk_list(heap, heap->refzero_list, duk__assert_validity_cb1); -#endif - duk__assert_walk_strtable(heap, duk__assert_validity_cb2); -} - -#if defined(DUK_USE_REFERENCE_COUNTING) -DUK_LOCAL void duk__assert_valid_refcounts_cb(duk_heap *heap, duk_heaphdr *h) { - /* Cannot really assert much w.r.t. refcounts now. */ - - DUK_UNREF(heap); - if (DUK_HEAPHDR_GET_REFCOUNT(h) == 0 && DUK_HEAPHDR_HAS_FINALIZED(h)) { - /* An object may be in heap_allocated list with a zero - * refcount if it has just been finalized and is waiting - * to be collected by the next cycle. - * (This doesn't currently happen however.) - */ - } else if (DUK_HEAPHDR_GET_REFCOUNT(h) == 0) { - /* An object may be in heap_allocated list with a zero - * refcount also if it is a temporary object created - * during debugger paused state. It will get collected - * by mark-and-sweep based on its reachability status - * (presumably not reachable because refcount is 0). - */ - } - DUK_ASSERT_DISABLE(DUK_HEAPHDR_GET_REFCOUNT(h) >= 0); /* Unsigned. */ -} -DUK_LOCAL void duk__assert_valid_refcounts(duk_heap *heap) { - duk__assert_walk_list(heap, heap->heap_allocated, duk__assert_valid_refcounts_cb); -} - -DUK_LOCAL void duk__clear_assert_refcounts_cb1(duk_heap *heap, duk_heaphdr *h) { - DUK_UNREF(heap); - h->h_assert_refcount = 0; -} -DUK_LOCAL void duk__clear_assert_refcounts_cb2(duk_heap *heap, duk_hstring *h) { - DUK_UNREF(heap); - ((duk_heaphdr *) h)->h_assert_refcount = 0; -} -DUK_LOCAL void duk__clear_assert_refcounts(duk_heap *heap) { - duk__assert_walk_list(heap, heap->heap_allocated, duk__clear_assert_refcounts_cb1); -#if defined(DUK_USE_FINALIZER_SUPPORT) - duk__assert_walk_list(heap, heap->finalize_list, duk__clear_assert_refcounts_cb1); -#endif -#if defined(DUK_USE_REFERENCE_COUNTING) - duk__assert_walk_list(heap, heap->refzero_list, duk__clear_assert_refcounts_cb1); -#endif - duk__assert_walk_strtable(heap, duk__clear_assert_refcounts_cb2); -} - -DUK_LOCAL void duk__check_refcount_heaphdr(duk_heaphdr *hdr) { - duk_bool_t count_ok; - duk_size_t expect_refc; - - /* The refcount check only makes sense for reachable objects on - * heap_allocated or string table, after the sweep phase. Prior to - * sweep phase refcounts will include references that are not visible - * via reachability roots. - * - * Because we're called after the sweep phase, all heap objects on - * heap_allocated are reachable. REACHABLE flags have already been - * cleared so we can't check them. - */ - - /* ROM objects have intentionally incorrect refcount (1), but we won't - * check them. - */ - DUK_ASSERT(!DUK_HEAPHDR_HAS_READONLY(hdr)); - - expect_refc = hdr->h_assert_refcount; - if (DUK_HEAPHDR_IS_STRING(hdr) && DUK_HSTRING_HAS_PINNED_LITERAL((duk_hstring *) hdr)) { - expect_refc++; - } - count_ok = ((duk_size_t) DUK_HEAPHDR_GET_REFCOUNT(hdr) == expect_refc); - if (!count_ok) { - DUK_D(DUK_DPRINT("refcount mismatch for: %p: header=%ld counted=%ld --> %!iO", - (void *) hdr, - (long) DUK_HEAPHDR_GET_REFCOUNT(hdr), - (long) hdr->h_assert_refcount, - hdr)); - DUK_ASSERT(0); - } -} - -DUK_LOCAL void duk__check_assert_refcounts_cb1(duk_heap *heap, duk_heaphdr *h) { - DUK_UNREF(heap); - duk__check_refcount_heaphdr(h); -} -DUK_LOCAL void duk__check_assert_refcounts_cb2(duk_heap *heap, duk_hstring *h) { - DUK_UNREF(heap); - duk__check_refcount_heaphdr((duk_heaphdr *) h); -} -DUK_LOCAL void duk__check_assert_refcounts(duk_heap *heap) { - duk__assert_walk_list(heap, heap->heap_allocated, duk__check_assert_refcounts_cb1); -#if defined(DUK_USE_FINALIZER_SUPPORT) - duk__assert_walk_list(heap, heap->finalize_list, duk__check_assert_refcounts_cb1); -#endif - /* XXX: Assert anything for refzero_list? */ - duk__assert_walk_strtable(heap, duk__check_assert_refcounts_cb2); -} -#endif /* DUK_USE_REFERENCE_COUNTING */ - -#if defined(DUK_USE_LITCACHE_SIZE) -DUK_LOCAL void duk__assert_litcache_nulls(duk_heap *heap) { - duk_uint_t i; - duk_litcache_entry *e; - - e = heap->litcache; - for (i = 0; i < DUK_USE_LITCACHE_SIZE; i++) { - /* Entry addresses were NULLed before mark-and-sweep, check - * that they're still NULL afterwards to ensure no pointers - * were recorded through any side effects. - */ - DUK_ASSERT(e->addr == NULL); - } -} -#endif /* DUK_USE_LITCACHE_SIZE */ -#endif /* DUK_USE_ASSERTIONS */ - -/* - * Stats dump. - */ - -#if defined(DUK_USE_DEBUG) -DUK_LOCAL void duk__dump_stats(duk_heap *heap) { - DUK_D(DUK_DPRINT("stats executor: opcodes=%ld, interrupt=%ld, throw=%ld", - (long) heap->stats_exec_opcodes, - (long) heap->stats_exec_interrupt, - (long) heap->stats_exec_throw)); - DUK_D(DUK_DPRINT("stats call: all=%ld, tailcall=%ld, ecmatoecma=%ld", - (long) heap->stats_call_all, - (long) heap->stats_call_tailcall, - (long) heap->stats_call_ecmatoecma)); - DUK_D(DUK_DPRINT("stats safecall: all=%ld, nothrow=%ld, throw=%ld", - (long) heap->stats_safecall_all, - (long) heap->stats_safecall_nothrow, - (long) heap->stats_safecall_throw)); - DUK_D(DUK_DPRINT("stats mark-and-sweep: try_count=%ld, skip_count=%ld, emergency_count=%ld", - (long) heap->stats_ms_try_count, - (long) heap->stats_ms_skip_count, - (long) heap->stats_ms_emergency_count)); - DUK_D(DUK_DPRINT("stats stringtable: intern_hit=%ld, intern_miss=%ld, " - "resize_check=%ld, resize_grow=%ld, resize_shrink=%ld, " - "litcache_hit=%ld, litcache_miss=%ld, litcache_pin=%ld", - (long) heap->stats_strtab_intern_hit, - (long) heap->stats_strtab_intern_miss, - (long) heap->stats_strtab_resize_check, - (long) heap->stats_strtab_resize_grow, - (long) heap->stats_strtab_resize_shrink, - (long) heap->stats_strtab_litcache_hit, - (long) heap->stats_strtab_litcache_miss, - (long) heap->stats_strtab_litcache_pin)); - DUK_D(DUK_DPRINT("stats object: realloc_props=%ld, abandon_array=%ld", - (long) heap->stats_object_realloc_props, - (long) heap->stats_object_abandon_array)); - DUK_D(DUK_DPRINT("stats getownpropdesc: count=%ld, hit=%ld, miss=%ld", - (long) heap->stats_getownpropdesc_count, - (long) heap->stats_getownpropdesc_hit, - (long) heap->stats_getownpropdesc_miss)); - DUK_D(DUK_DPRINT("stats getpropdesc: count=%ld, hit=%ld, miss=%ld", - (long) heap->stats_getpropdesc_count, - (long) heap->stats_getpropdesc_hit, - (long) heap->stats_getpropdesc_miss)); - DUK_D(DUK_DPRINT("stats getprop: all=%ld, arrayidx=%ld, bufobjidx=%ld, " - "bufferidx=%ld, bufferlen=%ld, stringidx=%ld, stringlen=%ld, " - "proxy=%ld, arguments=%ld", - (long) heap->stats_getprop_all, - (long) heap->stats_getprop_arrayidx, - (long) heap->stats_getprop_bufobjidx, - (long) heap->stats_getprop_bufferidx, - (long) heap->stats_getprop_bufferlen, - (long) heap->stats_getprop_stringidx, - (long) heap->stats_getprop_stringlen, - (long) heap->stats_getprop_proxy, - (long) heap->stats_getprop_arguments)); - DUK_D(DUK_DPRINT("stats putprop: all=%ld, arrayidx=%ld, bufobjidx=%ld, " - "bufferidx=%ld, proxy=%ld", - (long) heap->stats_putprop_all, - (long) heap->stats_putprop_arrayidx, - (long) heap->stats_putprop_bufobjidx, - (long) heap->stats_putprop_bufferidx, - (long) heap->stats_putprop_proxy)); - DUK_D(DUK_DPRINT("stats getvar: all=%ld", (long) heap->stats_getvar_all)); - DUK_D(DUK_DPRINT("stats putvar: all=%ld", (long) heap->stats_putvar_all)); - DUK_D(DUK_DPRINT("stats envrec: delayedcreate=%ld, create=%ld, newenv=%ld, oldenv=%ld, pushclosure=%ld", - (long) heap->stats_envrec_delayedcreate, - (long) heap->stats_envrec_create, - (long) heap->stats_envrec_newenv, - (long) heap->stats_envrec_oldenv, - (long) heap->stats_envrec_pushclosure)); -} -#endif /* DUK_USE_DEBUG */ - -/* - * Main mark-and-sweep function. - * - * 'flags' represents the features requested by the caller. The current - * heap->ms_base_flags is ORed automatically into the flags; the base flags - * mask typically prevents certain mark-and-sweep operation to avoid trouble. - */ - -DUK_INTERNAL void duk_heap_mark_and_sweep(duk_heap *heap, duk_small_uint_t flags) { - duk_size_t count_keep_obj; - duk_size_t count_keep_str; -#if defined(DUK_USE_VOLUNTARY_GC) - duk_size_t tmp; -#endif - duk_bool_t entry_creating_error; - - DUK_STATS_INC(heap, stats_ms_try_count); -#if defined(DUK_USE_DEBUG) - if (flags & DUK_MS_FLAG_EMERGENCY) { - DUK_STATS_INC(heap, stats_ms_emergency_count); - } -#endif - - /* If debugger is paused, garbage collection is disabled by default. - * This is achieved by bumping ms_prevent_count when becoming paused. - */ - DUK_ASSERT(!DUK_HEAP_HAS_DEBUGGER_PAUSED(heap) || heap->ms_prevent_count > 0); - - /* Prevention/recursion check as soon as possible because we may - * be called a number of times when voluntary mark-and-sweep is - * pending. - */ - if (heap->ms_prevent_count != 0) { - DUK_DD(DUK_DDPRINT("reject recursive mark-and-sweep")); - DUK_STATS_INC(heap, stats_ms_skip_count); - return; - } - DUK_ASSERT(heap->ms_running == 0); /* ms_prevent_count is bumped when ms_running is set */ - - /* Heap_thread is used during mark-and-sweep for refcount finalization - * (it's also used for finalizer execution once mark-and-sweep is - * complete). Heap allocation code ensures heap_thread is set and - * properly initialized before setting ms_prevent_count to 0. - */ - DUK_ASSERT(heap->heap_thread != NULL); - DUK_ASSERT(heap->heap_thread->valstack != NULL); - - DUK_D(DUK_DPRINT("garbage collect (mark-and-sweep) starting, requested flags: 0x%08lx, effective flags: 0x%08lx", - (unsigned long) flags, - (unsigned long) (flags | heap->ms_base_flags))); - - flags |= heap->ms_base_flags; -#if defined(DUK_USE_FINALIZER_SUPPORT) - if (heap->finalize_list != NULL) { - flags |= DUK_MS_FLAG_POSTPONE_RESCUE; - } -#endif - - /* - * Assertions before - */ - -#if defined(DUK_USE_ASSERTIONS) - DUK_ASSERT(heap->ms_prevent_count == 0); - DUK_ASSERT(heap->ms_running == 0); - DUK_ASSERT(!DUK_HEAP_HAS_DEBUGGER_PAUSED(heap)); - DUK_ASSERT(!DUK_HEAP_HAS_MARKANDSWEEP_RECLIMIT_REACHED(heap)); - DUK_ASSERT(heap->ms_recursion_depth == 0); - duk__assert_heaphdr_flags(heap); - duk__assert_validity(heap); -#if defined(DUK_USE_REFERENCE_COUNTING) - /* Note: heap->refzero_free_running may be true; a refcount - * finalizer may trigger a mark-and-sweep. - */ - duk__assert_valid_refcounts(heap); -#endif /* DUK_USE_REFERENCE_COUNTING */ -#endif /* DUK_USE_ASSERTIONS */ - - /* - * Begin - */ - - DUK_ASSERT(heap->ms_prevent_count == 0); - DUK_ASSERT(heap->ms_running == 0); - heap->ms_prevent_count = 1; - heap->ms_running = 1; - entry_creating_error = heap->creating_error; - heap->creating_error = 0; - - /* - * Free activation/catcher freelists on every mark-and-sweep for now. - * This is an initial rough draft; ideally we'd keep count of the - * freelist size and free only excess entries. - */ - - DUK_D(DUK_DPRINT("freeing temporary freelists")); - duk_heap_free_freelists(heap); - - /* - * Mark roots, hoping that recursion limit is not normally hit. - * If recursion limit is hit, run additional reachability rounds - * starting from "temproots" until marking is complete. - * - * Marking happens in two phases: first we mark actual reachability - * roots (and run "temproots" to complete the process). Then we - * check which objects are unreachable and are finalizable; such - * objects are marked as FINALIZABLE and marked as reachability - * (and "temproots" is run again to complete the process). - * - * The heap finalize_list must also be marked as a reachability root. - * There may be objects on the list from a previous round if the - * previous run had finalizer skip flag. - */ - -#if defined(DUK_USE_ASSERTIONS) && defined(DUK_USE_REFERENCE_COUNTING) - duk__clear_assert_refcounts(heap); -#endif -#if defined(DUK_USE_LITCACHE_SIZE) - duk__wipe_litcache(heap); -#endif - duk__mark_roots_heap(heap); /* Mark main reachability roots. */ -#if defined(DUK_USE_REFERENCE_COUNTING) - DUK_ASSERT(heap->refzero_list == NULL); /* Always handled to completion inline in DECREF. */ -#endif - duk__mark_temproots_by_heap_scan(heap); /* Temproots. */ - -#if defined(DUK_USE_FINALIZER_SUPPORT) - duk__mark_finalizable(heap); /* Mark finalizable as reachability roots. */ - duk__mark_finalize_list(heap); /* Mark finalizer work list as reachability roots. */ -#endif - duk__mark_temproots_by_heap_scan(heap); /* Temproots. */ - - /* - * Sweep garbage and remove marking flags, and move objects with - * finalizers to the finalizer work list. - * - * Objects to be swept need to get their refcounts finalized before - * they are swept. In other words, their target object refcounts - * need to be decreased. This has to be done before freeing any - * objects to avoid decref'ing dangling pointers (which may happen - * even without bugs, e.g. with reference loops) - * - * Because strings don't point to other heap objects, similar - * finalization is not necessary for strings. - */ - - /* XXX: more emergency behavior, e.g. find smaller hash sizes etc */ - -#if defined(DUK_USE_REFERENCE_COUNTING) - duk__finalize_refcounts(heap); -#endif - duk__sweep_heap(heap, flags, &count_keep_obj); - duk__sweep_stringtable(heap, &count_keep_str); -#if defined(DUK_USE_ASSERTIONS) && defined(DUK_USE_REFERENCE_COUNTING) - duk__check_assert_refcounts(heap); -#endif -#if defined(DUK_USE_REFERENCE_COUNTING) - DUK_ASSERT(heap->refzero_list == NULL); /* Always handled to completion inline in DECREF. */ -#endif -#if defined(DUK_USE_FINALIZER_SUPPORT) - duk__clear_finalize_list_flags(heap); -#endif - - /* - * Object compaction (emergency only). - * - * Object compaction is a separate step after sweeping, as there is - * more free memory for it to work with. Also, currently compaction - * may insert new objects into the heap allocated list and the string - * table which we don't want to do during a sweep (the reachability - * flags of such objects would be incorrect). The objects inserted - * are currently: - * - * - a temporary duk_hbuffer for a new properties allocation - * - if array part is abandoned, string keys are interned - * - * The object insertions go to the front of the list, so they do not - * cause an infinite loop (they are not compacted). - * - * At present compaction is not allowed when mark-and-sweep runs - * during error handling because it involves a duk_safe_call() - * interfering with error state. - */ - - if ((flags & DUK_MS_FLAG_EMERGENCY) && !(flags & DUK_MS_FLAG_NO_OBJECT_COMPACTION)) { - if (heap->lj.type != DUK_LJ_TYPE_UNKNOWN) { - DUK_D(DUK_DPRINT("lj.type (%ld) not DUK_LJ_TYPE_UNKNOWN, skip object compaction", (long) heap->lj.type)); - } else { - DUK_D(DUK_DPRINT("object compaction")); - duk__compact_objects(heap); - } - } - - /* - * String table resize check. - * - * This is mainly useful in emergency GC: if the string table load - * factor is really low for some reason, we can shrink the string - * table to a smaller size and free some memory in the process. - * Only execute in emergency GC. String table has internal flags - * to protect against recursive resizing if this mark-and-sweep pass - * was triggered by a string table resize. - */ - - if (flags & DUK_MS_FLAG_EMERGENCY) { - DUK_D(DUK_DPRINT("stringtable resize check in emergency gc")); - duk_heap_strtable_force_resize(heap); - } - - /* - * Finish - */ - - DUK_ASSERT(heap->ms_prevent_count == 1); - DUK_ASSERT(heap->ms_running == 1); - heap->ms_prevent_count = 0; - heap->ms_running = 0; - heap->creating_error = entry_creating_error; /* for nested error handling, see GH-2278 */ - - /* - * Assertions after - */ - -#if defined(DUK_USE_ASSERTIONS) - DUK_ASSERT(heap->ms_prevent_count == 0); - DUK_ASSERT(!DUK_HEAP_HAS_MARKANDSWEEP_RECLIMIT_REACHED(heap)); - DUK_ASSERT(heap->ms_recursion_depth == 0); - duk__assert_heaphdr_flags(heap); - duk__assert_validity(heap); -#if defined(DUK_USE_REFERENCE_COUNTING) - /* Note: heap->refzero_free_running may be true; a refcount - * finalizer may trigger a mark-and-sweep. - */ - duk__assert_valid_refcounts(heap); -#endif /* DUK_USE_REFERENCE_COUNTING */ -#if defined(DUK_USE_LITCACHE_SIZE) - duk__assert_litcache_nulls(heap); -#endif /* DUK_USE_LITCACHE_SIZE */ -#endif /* DUK_USE_ASSERTIONS */ - - /* - * Reset trigger counter - */ - -#if defined(DUK_USE_VOLUNTARY_GC) - tmp = (count_keep_obj + count_keep_str) / 256; - heap->ms_trigger_counter = (duk_int_t) ((tmp * DUK_HEAP_MARK_AND_SWEEP_TRIGGER_MULT) + DUK_HEAP_MARK_AND_SWEEP_TRIGGER_ADD); - DUK_D(DUK_DPRINT("garbage collect (mark-and-sweep) finished: %ld objects kept, %ld strings kept, trigger reset to %ld", - (long) count_keep_obj, - (long) count_keep_str, - (long) heap->ms_trigger_counter)); -#else - DUK_D(DUK_DPRINT("garbage collect (mark-and-sweep) finished: %ld objects kept, %ld strings kept, no voluntary trigger", - (long) count_keep_obj, - (long) count_keep_str)); -#endif - - /* - * Stats dump - */ - -#if defined(DUK_USE_DEBUG) - duk__dump_stats(heap); -#endif - - /* - * Finalize objects in the finalization work list. Finalized - * objects are queued back to heap_allocated with FINALIZED set. - * - * Since finalizers may cause arbitrary side effects, they are - * prevented e.g. during string table and object property allocation - * resizing using heap->pf_prevent_count. In this case the objects - * remain in the finalization work list after mark-and-sweep exits - * and they may be finalized on the next pass or any DECREF checking - * for finalize_list. - * - * As of Duktape 2.1 finalization happens outside mark-and-sweep - * protection. Mark-and-sweep is allowed while the finalize_list - * is being processed, but no rescue decisions are done while the - * process is on-going. This avoids incorrect rescue decisions - * if an object is considered reachable (and thus rescued) because - * of a reference via finalize_list (which is considered a reachability - * root). When finalize_list is being processed, reachable objects - * with FINALIZED set will just keep their FINALIZED flag for later - * mark-and-sweep processing. - * - * This could also be handled (a bit better) by having a more refined - * notion of reachability for rescue/free decisions. - * - * XXX: avoid finalizer execution when doing emergency GC? - */ - -#if defined(DUK_USE_FINALIZER_SUPPORT) - /* Attempt to process finalize_list, pf_prevent_count check - * is inside the target. - */ - duk_heap_process_finalize_list(heap); -#endif /* DUK_USE_FINALIZER_SUPPORT */ -} -#line 1 "duk_heap_memory.c" -/* - * Memory allocation handling. - */ - -/* #include duk_internal.h -> already included */ - -/* - * Allocate memory with garbage collection. - */ - -/* Slow path: voluntary GC triggered, first alloc attempt failed, or zero size. */ -DUK_LOCAL DUK_NOINLINE_PERF DUK_COLD void *duk__heap_mem_alloc_slowpath(duk_heap *heap, duk_size_t size) { - void *res; - duk_small_int_t i; - - DUK_ASSERT(heap != NULL); - DUK_ASSERT(heap->alloc_func != NULL); - DUK_ASSERT_DISABLE(size >= 0); - - if (size == 0) { - DUK_D(DUK_DPRINT("zero size alloc in slow path, return NULL")); - return NULL; - } - - DUK_D(DUK_DPRINT("first alloc attempt failed or voluntary GC limit reached, attempt to gc and retry")); - -#if 0 - /* - * If GC is already running there is no point in attempting a GC - * because it will be skipped. This could be checked for explicitly, - * but it isn't actually needed: the loop below will eventually - * fail resulting in a NULL. - */ - - if (heap->ms_prevent_count != 0) { - DUK_D(DUK_DPRINT("duk_heap_mem_alloc() failed, gc in progress (gc skipped), alloc size %ld", (long) size)); - return NULL; - } -#endif - - /* - * Retry with several GC attempts. Initial attempts are made without - * emergency mode; later attempts use emergency mode which minimizes - * memory allocations forcibly. - */ - - for (i = 0; i < DUK_HEAP_ALLOC_FAIL_MARKANDSWEEP_LIMIT; i++) { - duk_small_uint_t flags; - - flags = 0; - if (i >= DUK_HEAP_ALLOC_FAIL_MARKANDSWEEP_EMERGENCY_LIMIT - 1) { - flags |= DUK_MS_FLAG_EMERGENCY; - } - - duk_heap_mark_and_sweep(heap, flags); - - DUK_ASSERT(size > 0); - res = heap->alloc_func(heap->heap_udata, size); - if (res != NULL) { - DUK_D(DUK_DPRINT("duk_heap_mem_alloc() succeeded after gc (pass %ld), alloc size %ld", - (long) (i + 1), - (long) size)); - return res; - } - } - - DUK_D(DUK_DPRINT("duk_heap_mem_alloc() failed even after gc, alloc size %ld", (long) size)); - return NULL; -} - -DUK_INTERNAL DUK_INLINE_PERF DUK_HOT void *duk_heap_mem_alloc(duk_heap *heap, duk_size_t size) { - void *res; - - DUK_ASSERT(heap != NULL); - DUK_ASSERT(heap->alloc_func != NULL); - DUK_ASSERT_DISABLE(size >= 0); - -#if defined(DUK_USE_VOLUNTARY_GC) - /* Voluntary periodic GC (if enabled). */ - if (DUK_UNLIKELY(--(heap)->ms_trigger_counter < 0)) { - goto slowpath; - } -#endif - -#if defined(DUK_USE_GC_TORTURE) - /* Simulate alloc failure on every alloc, except when mark-and-sweep - * is running. - */ - if (heap->ms_prevent_count == 0) { - DUK_DDD(DUK_DDDPRINT("gc torture enabled, pretend that first alloc attempt fails")); - res = NULL; - DUK_UNREF(res); - goto slowpath; - } -#endif - - /* Zero-size allocation should happen very rarely (if at all), so - * don't check zero size on NULL; handle it in the slow path - * instead. This reduces size of inlined code. - */ - res = heap->alloc_func(heap->heap_udata, size); - if (DUK_LIKELY(res != NULL)) { - return res; - } - -slowpath: - - if (size == 0) { - DUK_D(DUK_DPRINT("first alloc attempt returned NULL for zero size alloc, use slow path to deal with it")); - } else { - DUK_D(DUK_DPRINT("first alloc attempt failed, attempt to gc and retry")); - } - return duk__heap_mem_alloc_slowpath(heap, size); -} - -DUK_INTERNAL DUK_INLINE_PERF DUK_HOT void *duk_heap_mem_alloc_zeroed(duk_heap *heap, duk_size_t size) { - void *res; - - DUK_ASSERT(heap != NULL); - DUK_ASSERT(heap->alloc_func != NULL); - DUK_ASSERT_DISABLE(size >= 0); - - res = DUK_ALLOC(heap, size); - if (DUK_LIKELY(res != NULL)) { - duk_memzero(res, size); - } - return res; -} - -DUK_INTERNAL DUK_INLINE_PERF DUK_HOT void *duk_heap_mem_alloc_checked(duk_hthread *thr, duk_size_t size) { - void *res; - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(thr->heap != NULL); - DUK_ASSERT(thr->heap->alloc_func != NULL); - - res = duk_heap_mem_alloc(thr->heap, size); - if (DUK_LIKELY(res != NULL)) { - return res; - } else if (size == 0) { - DUK_ASSERT(res == NULL); - return res; - } - DUK_ERROR_ALLOC_FAILED(thr); - DUK_WO_NORETURN(return NULL;); -} - -DUK_INTERNAL DUK_INLINE_PERF DUK_HOT void *duk_heap_mem_alloc_checked_zeroed(duk_hthread *thr, duk_size_t size) { - void *res; - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(thr->heap != NULL); - DUK_ASSERT(thr->heap->alloc_func != NULL); - - res = duk_heap_mem_alloc(thr->heap, size); - if (DUK_LIKELY(res != NULL)) { - duk_memzero(res, size); - return res; - } else if (size == 0) { - DUK_ASSERT(res == NULL); - return res; - } - DUK_ERROR_ALLOC_FAILED(thr); - DUK_WO_NORETURN(return NULL;); -} - -/* - * Reallocate memory with garbage collection. - */ - -/* Slow path: voluntary GC triggered, first realloc attempt failed, or zero size. */ -DUK_LOCAL DUK_NOINLINE_PERF DUK_COLD void *duk__heap_mem_realloc_slowpath(duk_heap *heap, void *ptr, duk_size_t newsize) { - void *res; - duk_small_int_t i; - - DUK_ASSERT(heap != NULL); - DUK_ASSERT(heap->realloc_func != NULL); - /* ptr may be NULL */ - DUK_ASSERT_DISABLE(newsize >= 0); - - /* Unlike for malloc(), zero size NULL result check happens at the call site. */ - - DUK_D(DUK_DPRINT("first realloc attempt failed, attempt to gc and retry")); - -#if 0 - /* - * Avoid a GC if GC is already running. See duk_heap_mem_alloc(). - */ - - if (heap->ms_prevent_count != 0) { - DUK_D(DUK_DPRINT("duk_heap_mem_realloc() failed, gc in progress (gc skipped), alloc size %ld", (long) newsize)); - return NULL; - } -#endif - - /* - * Retry with several GC attempts. Initial attempts are made without - * emergency mode; later attempts use emergency mode which minimizes - * memory allocations forcibly. - */ - - for (i = 0; i < DUK_HEAP_ALLOC_FAIL_MARKANDSWEEP_LIMIT; i++) { - duk_small_uint_t flags; - - flags = 0; - if (i >= DUK_HEAP_ALLOC_FAIL_MARKANDSWEEP_EMERGENCY_LIMIT - 1) { - flags |= DUK_MS_FLAG_EMERGENCY; - } - - duk_heap_mark_and_sweep(heap, flags); - - res = heap->realloc_func(heap->heap_udata, ptr, newsize); - if (res != NULL || newsize == 0) { - DUK_D(DUK_DPRINT("duk_heap_mem_realloc() succeeded after gc (pass %ld), alloc size %ld", - (long) (i + 1), - (long) newsize)); - return res; - } - } - - DUK_D(DUK_DPRINT("duk_heap_mem_realloc() failed even after gc, alloc size %ld", (long) newsize)); - return NULL; -} - -DUK_INTERNAL DUK_INLINE_PERF DUK_HOT void *duk_heap_mem_realloc(duk_heap *heap, void *ptr, duk_size_t newsize) { - void *res; - - DUK_ASSERT(heap != NULL); - DUK_ASSERT(heap->realloc_func != NULL); - /* ptr may be NULL */ - DUK_ASSERT_DISABLE(newsize >= 0); - -#if defined(DUK_USE_VOLUNTARY_GC) - /* Voluntary periodic GC (if enabled). */ - if (DUK_UNLIKELY(--(heap)->ms_trigger_counter < 0)) { - goto gc_retry; - } -#endif - -#if defined(DUK_USE_GC_TORTURE) - /* Simulate alloc failure on every realloc, except when mark-and-sweep - * is running. - */ - if (heap->ms_prevent_count == 0) { - DUK_DDD(DUK_DDDPRINT("gc torture enabled, pretend that first realloc attempt fails")); - res = NULL; - DUK_UNREF(res); - goto gc_retry; - } -#endif - - res = heap->realloc_func(heap->heap_udata, ptr, newsize); - if (DUK_LIKELY(res != NULL) || newsize == 0) { - if (res != NULL && newsize == 0) { - DUK_DD(DUK_DDPRINT("first realloc attempt returned NULL for zero size realloc, accept and return NULL")); - } - return res; - } else { - goto gc_retry; - } - /* Never here. */ - -gc_retry: - return duk__heap_mem_realloc_slowpath(heap, ptr, newsize); -} - -/* - * Reallocate memory with garbage collection, using a callback to provide - * the current allocated pointer. This variant is used when a mark-and-sweep - * (e.g. finalizers) might change the original pointer. - */ - -/* Slow path: voluntary GC triggered, first realloc attempt failed, or zero size. */ -DUK_LOCAL DUK_NOINLINE_PERF DUK_COLD void *duk__heap_mem_realloc_indirect_slowpath(duk_heap *heap, - duk_mem_getptr cb, - void *ud, - duk_size_t newsize) { - void *res; - duk_small_int_t i; - - DUK_ASSERT(heap != NULL); - DUK_ASSERT(heap->realloc_func != NULL); - DUK_ASSERT_DISABLE(newsize >= 0); - - /* Unlike for malloc(), zero size NULL result check happens at the call site. */ - - DUK_D(DUK_DPRINT("first indirect realloc attempt failed, attempt to gc and retry")); - -#if 0 - /* - * Avoid a GC if GC is already running. See duk_heap_mem_alloc(). - */ - - if (heap->ms_prevent_count != 0) { - DUK_D(DUK_DPRINT("duk_heap_mem_realloc_indirect() failed, gc in progress (gc skipped), alloc size %ld", (long) newsize)); - return NULL; - } -#endif - - /* - * Retry with several GC attempts. Initial attempts are made without - * emergency mode; later attempts use emergency mode which minimizes - * memory allocations forcibly. - */ - - for (i = 0; i < DUK_HEAP_ALLOC_FAIL_MARKANDSWEEP_LIMIT; i++) { - duk_small_uint_t flags; - -#if defined(DUK_USE_DEBUG) - void *ptr_pre; - void *ptr_post; -#endif - -#if defined(DUK_USE_DEBUG) - ptr_pre = cb(heap, ud); -#endif - flags = 0; - if (i >= DUK_HEAP_ALLOC_FAIL_MARKANDSWEEP_EMERGENCY_LIMIT - 1) { - flags |= DUK_MS_FLAG_EMERGENCY; - } - - duk_heap_mark_and_sweep(heap, flags); -#if defined(DUK_USE_DEBUG) - ptr_post = cb(heap, ud); - if (ptr_pre != ptr_post) { - DUK_DD(DUK_DDPRINT("realloc base pointer changed by mark-and-sweep: %p -> %p", - (void *) ptr_pre, - (void *) ptr_post)); - } -#endif - - /* Note: key issue here is to re-lookup the base pointer on every attempt. - * The pointer being reallocated may change after every mark-and-sweep. - */ - - res = heap->realloc_func(heap->heap_udata, cb(heap, ud), newsize); - if (res != NULL || newsize == 0) { - DUK_D(DUK_DPRINT("duk_heap_mem_realloc_indirect() succeeded after gc (pass %ld), alloc size %ld", - (long) (i + 1), - (long) newsize)); - return res; - } - } - - DUK_D(DUK_DPRINT("duk_heap_mem_realloc_indirect() failed even after gc, alloc size %ld", (long) newsize)); - return NULL; -} - -DUK_INTERNAL DUK_INLINE_PERF DUK_HOT void *duk_heap_mem_realloc_indirect(duk_heap *heap, - duk_mem_getptr cb, - void *ud, - duk_size_t newsize) { - void *res; - - DUK_ASSERT(heap != NULL); - DUK_ASSERT(heap->realloc_func != NULL); - DUK_ASSERT_DISABLE(newsize >= 0); - -#if defined(DUK_USE_VOLUNTARY_GC) - /* Voluntary periodic GC (if enabled). */ - if (DUK_UNLIKELY(--(heap)->ms_trigger_counter < 0)) { - goto gc_retry; - } -#endif - -#if defined(DUK_USE_GC_TORTURE) - /* Simulate alloc failure on every realloc, except when mark-and-sweep - * is running. - */ - if (heap->ms_prevent_count == 0) { - DUK_DDD(DUK_DDDPRINT("gc torture enabled, pretend that first indirect realloc attempt fails")); - res = NULL; - DUK_UNREF(res); - goto gc_retry; - } -#endif - - res = heap->realloc_func(heap->heap_udata, cb(heap, ud), newsize); - if (DUK_LIKELY(res != NULL) || newsize == 0) { - if (res != NULL && newsize == 0) { - DUK_DD(DUK_DDPRINT( - "first indirect realloc attempt returned NULL for zero size realloc, accept and return NULL")); - } - return res; - } else { - goto gc_retry; - } - /* Never here. */ - -gc_retry: - return duk__heap_mem_realloc_indirect_slowpath(heap, cb, ud, newsize); -} - -/* - * Free memory - */ - -DUK_INTERNAL DUK_INLINE_PERF DUK_HOT void duk_heap_mem_free(duk_heap *heap, void *ptr) { - DUK_ASSERT(heap != NULL); - DUK_ASSERT(heap->free_func != NULL); - /* ptr may be NULL */ - - /* Must behave like a no-op with NULL and any pointer returned from - * malloc/realloc with zero size. - */ - heap->free_func(heap->heap_udata, ptr); - - /* Never perform a GC (even voluntary) in a memory free, otherwise - * all call sites doing frees would need to deal with the side effects. - * No need to update voluntary GC counter either. - */ -} -#line 1 "duk_heap_misc.c" -/* - * Support functions for duk_heap. - */ - -/* #include duk_internal.h -> already included */ - -DUK_INTERNAL void duk_heap_insert_into_heap_allocated(duk_heap *heap, duk_heaphdr *hdr) { - duk_heaphdr *root; - - DUK_ASSERT(DUK_HEAPHDR_GET_TYPE(hdr) != DUK_HTYPE_STRING); - - root = heap->heap_allocated; -#if defined(DUK_USE_DOUBLE_LINKED_HEAP) - if (root != NULL) { - DUK_ASSERT(DUK_HEAPHDR_GET_PREV(heap, root) == NULL); - DUK_HEAPHDR_SET_PREV(heap, root, hdr); - } - DUK_HEAPHDR_SET_PREV(heap, hdr, NULL); -#endif - DUK_HEAPHDR_SET_NEXT(heap, hdr, root); - DUK_HEAPHDR_ASSERT_LINKS(heap, hdr); - DUK_HEAPHDR_ASSERT_LINKS(heap, root); - heap->heap_allocated = hdr; -} - -#if defined(DUK_USE_REFERENCE_COUNTING) -DUK_INTERNAL void duk_heap_remove_from_heap_allocated(duk_heap *heap, duk_heaphdr *hdr) { - duk_heaphdr *prev; - duk_heaphdr *next; - - /* Strings are in string table. */ - DUK_ASSERT(hdr != NULL); - DUK_ASSERT(DUK_HEAPHDR_GET_TYPE(hdr) != DUK_HTYPE_STRING); - - /* Target 'hdr' must be in heap_allocated (not e.g. finalize_list). - * If not, heap lists will become corrupted so assert early for it. - */ -#if defined(DUK_USE_ASSERTIONS) - { - duk_heaphdr *tmp; - for (tmp = heap->heap_allocated; tmp != NULL; tmp = DUK_HEAPHDR_GET_NEXT(heap, tmp)) { - if (tmp == hdr) { - break; - } - } - DUK_ASSERT(tmp == hdr); - } -#endif - - /* Read/write only once to minimize pointer compression calls. */ - prev = DUK_HEAPHDR_GET_PREV(heap, hdr); - next = DUK_HEAPHDR_GET_NEXT(heap, hdr); - - if (prev != NULL) { - DUK_ASSERT(heap->heap_allocated != hdr); - DUK_HEAPHDR_SET_NEXT(heap, prev, next); - } else { - DUK_ASSERT(heap->heap_allocated == hdr); - heap->heap_allocated = next; - } - if (next != NULL) { - DUK_HEAPHDR_SET_PREV(heap, next, prev); - } else { - ; - } -} -#endif /* DUK_USE_REFERENCE_COUNTING */ - -#if defined(DUK_USE_FINALIZER_SUPPORT) -DUK_INTERNAL void duk_heap_insert_into_finalize_list(duk_heap *heap, duk_heaphdr *hdr) { - duk_heaphdr *root; - - root = heap->finalize_list; -#if defined(DUK_USE_DOUBLE_LINKED_HEAP) - DUK_HEAPHDR_SET_PREV(heap, hdr, NULL); - if (root != NULL) { - DUK_ASSERT(DUK_HEAPHDR_GET_PREV(heap, root) == NULL); - DUK_HEAPHDR_SET_PREV(heap, root, hdr); - } -#endif - DUK_HEAPHDR_SET_NEXT(heap, hdr, root); - DUK_HEAPHDR_ASSERT_LINKS(heap, hdr); - DUK_HEAPHDR_ASSERT_LINKS(heap, root); - heap->finalize_list = hdr; -} -#endif /* DUK_USE_FINALIZER_SUPPORT */ - -#if defined(DUK_USE_FINALIZER_SUPPORT) -DUK_INTERNAL void duk_heap_remove_from_finalize_list(duk_heap *heap, duk_heaphdr *hdr) { -#if defined(DUK_USE_DOUBLE_LINKED_HEAP) - duk_heaphdr *next; - duk_heaphdr *prev; - - next = DUK_HEAPHDR_GET_NEXT(heap, hdr); - prev = DUK_HEAPHDR_GET_PREV(heap, hdr); - if (next != NULL) { - DUK_ASSERT(DUK_HEAPHDR_GET_PREV(heap, next) == hdr); - DUK_HEAPHDR_SET_PREV(heap, next, prev); - } - if (prev == NULL) { - DUK_ASSERT(hdr == heap->finalize_list); - heap->finalize_list = next; - } else { - DUK_ASSERT(hdr != heap->finalize_list); - DUK_HEAPHDR_SET_NEXT(heap, prev, next); - } -#else - duk_heaphdr *next; - duk_heaphdr *curr; - - /* Random removal is expensive: we need to locate the previous element - * because we don't have a 'prev' pointer. - */ - curr = heap->finalize_list; - if (curr == hdr) { - heap->finalize_list = DUK_HEAPHDR_GET_NEXT(heap, curr); - } else { - DUK_ASSERT(hdr != heap->finalize_list); - for (;;) { - DUK_ASSERT(curr != NULL); /* Caller responsibility. */ - - next = DUK_HEAPHDR_GET_NEXT(heap, curr); - if (next == hdr) { - next = DUK_HEAPHDR_GET_NEXT(heap, hdr); - DUK_HEAPHDR_SET_NEXT(heap, curr, next); - break; - } - } - } -#endif -} -#endif /* DUK_USE_FINALIZER_SUPPORT */ - -#if defined(DUK_USE_ASSERTIONS) -DUK_INTERNAL duk_bool_t duk_heap_in_heap_allocated(duk_heap *heap, duk_heaphdr *ptr) { - duk_heaphdr *curr; - DUK_ASSERT(heap != NULL); - - for (curr = heap->heap_allocated; curr != NULL; curr = DUK_HEAPHDR_GET_NEXT(heap, curr)) { - if (curr == ptr) { - return 1; - } - } - return 0; -} -#endif /* DUK_USE_ASSERTIONS */ - -#if defined(DUK_USE_INTERRUPT_COUNTER) -DUK_INTERNAL void duk_heap_switch_thread(duk_heap *heap, duk_hthread *new_thr) { - duk_hthread *curr_thr; - - DUK_ASSERT(heap != NULL); - - if (new_thr != NULL) { - curr_thr = heap->curr_thread; - if (curr_thr == NULL) { - /* For initial entry use default value; zero forces an - * interrupt before executing the first insturction. - */ - DUK_DD(DUK_DDPRINT("switch thread, initial entry, init default interrupt counter")); - new_thr->interrupt_counter = 0; - new_thr->interrupt_init = 0; - } else { - /* Copy interrupt counter/init value state to new thread (if any). - * It's OK for new_thr to be the same as curr_thr. - */ -#if defined(DUK_USE_DEBUG) - if (new_thr != curr_thr) { - DUK_DD(DUK_DDPRINT("switch thread, not initial entry, copy interrupt counter")); - } -#endif - new_thr->interrupt_counter = curr_thr->interrupt_counter; - new_thr->interrupt_init = curr_thr->interrupt_init; - } - } else { - DUK_DD(DUK_DDPRINT("switch thread, new thread is NULL, no interrupt counter changes")); - } - - heap->curr_thread = new_thr; /* may be NULL */ -} -#endif /* DUK_USE_INTERRUPT_COUNTER */ - -#if defined(DUK_USE_ASSERTIONS) -DUK_INTERNAL void duk_heap_assert_valid(duk_heap *heap) { - DUK_ASSERT(heap != NULL); -} -#endif -#line 1 "duk_heap_refcount.c" -/* - * Reference counting implementation. - * - * INCREF/DECREF, finalization and freeing of objects whose refcount reaches - * zero (refzero). These operations are very performance sensitive, so - * various small tricks are used in an attempt to maximize speed. - */ - -/* #include duk_internal.h -> already included */ - -#if defined(DUK_USE_REFERENCE_COUNTING) - -#if !defined(DUK_USE_DOUBLE_LINKED_HEAP) -#error internal error, reference counting requires a double linked heap -#endif - -/* - * Heap object refcount finalization. - * - * When an object is about to be freed, all other objects it refers to must - * be decref'd. Refcount finalization does NOT free the object or its inner - * allocations (mark-and-sweep shares these helpers), it just manipulates - * the refcounts. - * - * Note that any of the DECREFs may cause a refcount to drop to zero. If so, - * the object won't be refzero processed inline, but will just be queued to - * refzero_list and processed by an earlier caller working on refzero_list, - * eliminating C recursion from even long refzero cascades. If refzero - * finalization is triggered by mark-and-sweep, refzero conditions are ignored - * (objects are not even queued to refzero_list) because mark-and-sweep deals - * with them; refcounts are still updated so that they remain in sync with - * actual references. - */ - -DUK_LOCAL void duk__decref_tvals_norz(duk_hthread *thr, duk_tval *tv, duk_idx_t count) { - DUK_ASSERT(count == 0 || tv != NULL); - - while (count-- > 0) { - DUK_TVAL_DECREF_NORZ(thr, tv); - tv++; - } -} - -DUK_INTERNAL void duk_hobject_refcount_finalize_norz(duk_heap *heap, duk_hobject *h) { - duk_hthread *thr; - duk_uint_fast32_t i; - duk_uint_fast32_t n; - duk_propvalue *p_val; - duk_tval *p_tv; - duk_hstring **p_key; - duk_uint8_t *p_flag; - duk_hobject *h_proto; - - DUK_ASSERT(heap != NULL); - DUK_ASSERT(heap->heap_thread != NULL); - DUK_ASSERT(h); - DUK_ASSERT(DUK_HEAPHDR_GET_TYPE((duk_heaphdr *) h) == DUK_HTYPE_OBJECT); - - thr = heap->heap_thread; - DUK_ASSERT(thr != NULL); - - p_key = DUK_HOBJECT_E_GET_KEY_BASE(heap, h); - p_val = DUK_HOBJECT_E_GET_VALUE_BASE(heap, h); - p_flag = DUK_HOBJECT_E_GET_FLAGS_BASE(heap, h); - n = DUK_HOBJECT_GET_ENEXT(h); - while (n-- > 0) { - duk_hstring *key; - - key = p_key[n]; - if (DUK_UNLIKELY(key == NULL)) { - continue; - } - DUK_HSTRING_DECREF_NORZ(thr, key); - if (DUK_UNLIKELY(p_flag[n] & DUK_PROPDESC_FLAG_ACCESSOR)) { - duk_hobject *h_getset; - h_getset = p_val[n].a.get; - DUK_ASSERT(h_getset == NULL || DUK_HEAPHDR_IS_OBJECT((duk_heaphdr *) h_getset)); - DUK_HOBJECT_DECREF_NORZ_ALLOWNULL(thr, h_getset); - h_getset = p_val[n].a.set; - DUK_ASSERT(h_getset == NULL || DUK_HEAPHDR_IS_OBJECT((duk_heaphdr *) h_getset)); - DUK_HOBJECT_DECREF_NORZ_ALLOWNULL(thr, h_getset); - } else { - duk_tval *tv_val; - tv_val = &p_val[n].v; - DUK_TVAL_DECREF_NORZ(thr, tv_val); - } - } - - p_tv = DUK_HOBJECT_A_GET_BASE(heap, h); - n = DUK_HOBJECT_GET_ASIZE(h); - while (n-- > 0) { - duk_tval *tv_val; - tv_val = p_tv + n; - DUK_TVAL_DECREF_NORZ(thr, tv_val); - } - - /* Hash part is a 'weak reference' and doesn't contribute to refcounts. */ - - h_proto = (duk_hobject *) DUK_HOBJECT_GET_PROTOTYPE(heap, h); - DUK_ASSERT(h_proto == NULL || DUK_HEAPHDR_IS_OBJECT((duk_heaphdr *) h_proto)); - DUK_HOBJECT_DECREF_NORZ_ALLOWNULL(thr, h_proto); - - /* XXX: Object subclass tests are quite awkward at present, ideally - * we should be able to switch-case here with a dense index (subtype - * number or something). For now, fast path plain objects and arrays - * and bit test the rest individually. - */ - - if (DUK_HOBJECT_HAS_FASTREFS(h)) { - /* Plain object or array, nothing more to do. While a - * duk_harray has additional fields, none of them need - * DECREF updates. - */ - DUK_ASSERT(DUK_HOBJECT_ALLOWS_FASTREFS(h)); - return; - } - DUK_ASSERT(DUK_HOBJECT_PROHIBITS_FASTREFS(h)); - - /* Slow path: special object, start bit checks from most likely. */ - - /* XXX: reorg, more common first */ - if (DUK_HOBJECT_IS_COMPFUNC(h)) { - duk_hcompfunc *f = (duk_hcompfunc *) h; - duk_tval *tv, *tv_end; - duk_hobject **funcs, **funcs_end; - - DUK_HCOMPFUNC_ASSERT_VALID(f); - - if (DUK_LIKELY(DUK_HCOMPFUNC_GET_DATA(heap, f) != NULL)) { - tv = DUK_HCOMPFUNC_GET_CONSTS_BASE(heap, f); - tv_end = DUK_HCOMPFUNC_GET_CONSTS_END(heap, f); - while (tv < tv_end) { - DUK_TVAL_DECREF_NORZ(thr, tv); - tv++; - } - - funcs = DUK_HCOMPFUNC_GET_FUNCS_BASE(heap, f); - funcs_end = DUK_HCOMPFUNC_GET_FUNCS_END(heap, f); - while (funcs < funcs_end) { - duk_hobject *h_func; - h_func = *funcs; - DUK_ASSERT(h_func != NULL); - DUK_ASSERT(DUK_HEAPHDR_IS_OBJECT((duk_heaphdr *) h_func)); - DUK_HCOMPFUNC_DECREF_NORZ(thr, (duk_hcompfunc *) h_func); - funcs++; - } - } else { - /* May happen in some out-of-memory corner cases. */ - DUK_D(DUK_DPRINT("duk_hcompfunc 'data' is NULL, skipping decref")); - } - - DUK_HEAPHDR_DECREF_ALLOWNULL(thr, (duk_heaphdr *) DUK_HCOMPFUNC_GET_LEXENV(heap, f)); - DUK_HEAPHDR_DECREF_ALLOWNULL(thr, (duk_heaphdr *) DUK_HCOMPFUNC_GET_VARENV(heap, f)); - DUK_HEAPHDR_DECREF_ALLOWNULL(thr, (duk_hbuffer *) DUK_HCOMPFUNC_GET_DATA(heap, f)); - } else if (DUK_HOBJECT_IS_DECENV(h)) { - duk_hdecenv *e = (duk_hdecenv *) h; - DUK_HDECENV_ASSERT_VALID(e); - DUK_HTHREAD_DECREF_NORZ_ALLOWNULL(thr, e->thread); - DUK_HOBJECT_DECREF_NORZ_ALLOWNULL(thr, e->varmap); - } else if (DUK_HOBJECT_IS_OBJENV(h)) { - duk_hobjenv *e = (duk_hobjenv *) h; - DUK_HOBJENV_ASSERT_VALID(e); - DUK_ASSERT(e->target != NULL); /* Required for object environments. */ - DUK_HOBJECT_DECREF_NORZ(thr, e->target); -#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) - } else if (DUK_HOBJECT_IS_BUFOBJ(h)) { - duk_hbufobj *b = (duk_hbufobj *) h; - DUK_HBUFOBJ_ASSERT_VALID(b); - DUK_HBUFFER_DECREF_NORZ_ALLOWNULL(thr, (duk_hbuffer *) b->buf); - DUK_HOBJECT_DECREF_NORZ_ALLOWNULL(thr, (duk_hobject *) b->buf_prop); -#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ - } else if (DUK_HOBJECT_IS_BOUNDFUNC(h)) { - duk_hboundfunc *f = (duk_hboundfunc *) (void *) h; - DUK_HBOUNDFUNC_ASSERT_VALID(f); - DUK_TVAL_DECREF_NORZ(thr, &f->target); - DUK_TVAL_DECREF_NORZ(thr, &f->this_binding); - duk__decref_tvals_norz(thr, f->args, f->nargs); -#if defined(DUK_USE_ES6_PROXY) - } else if (DUK_HOBJECT_IS_PROXY(h)) { - duk_hproxy *p = (duk_hproxy *) h; - DUK_HPROXY_ASSERT_VALID(p); - DUK_HOBJECT_DECREF_NORZ(thr, p->target); - DUK_HOBJECT_DECREF_NORZ(thr, p->handler); -#endif /* DUK_USE_ES6_PROXY */ - } else if (DUK_HOBJECT_IS_THREAD(h)) { - duk_hthread *t = (duk_hthread *) h; - duk_activation *act; - duk_tval *tv; - - DUK_HTHREAD_ASSERT_VALID(t); - - tv = t->valstack; - while (tv < t->valstack_top) { - DUK_TVAL_DECREF_NORZ(thr, tv); - tv++; - } - - for (act = t->callstack_curr; act != NULL; act = act->parent) { - DUK_HOBJECT_DECREF_NORZ_ALLOWNULL(thr, (duk_hobject *) DUK_ACT_GET_FUNC(act)); - DUK_HOBJECT_DECREF_NORZ_ALLOWNULL(thr, (duk_hobject *) act->var_env); - DUK_HOBJECT_DECREF_NORZ_ALLOWNULL(thr, (duk_hobject *) act->lex_env); -#if defined(DUK_USE_NONSTD_FUNC_CALLER_PROPERTY) - DUK_HOBJECT_DECREF_NORZ_ALLOWNULL(thr, (duk_hobject *) act->prev_caller); -#endif -#if 0 /* nothing now */ - for (cat = act->cat; cat != NULL; cat = cat->parent) { - } -#endif - } - - for (i = 0; i < DUK_NUM_BUILTINS; i++) { - DUK_HOBJECT_DECREF_NORZ_ALLOWNULL(thr, (duk_hobject *) t->builtins[i]); - } - - DUK_HTHREAD_DECREF_NORZ_ALLOWNULL(thr, (duk_hthread *) t->resumer); - } else { - /* We may come here if the object should have a FASTREFS flag - * but it's missing for some reason. Assert for never getting - * here; however, other than performance, this is harmless. - */ - DUK_D(DUK_DPRINT("missing FASTREFS flag for: %!iO", h)); - DUK_ASSERT(0); - } -} - -DUK_INTERNAL void duk_heaphdr_refcount_finalize_norz(duk_heap *heap, duk_heaphdr *hdr) { - DUK_ASSERT(heap != NULL); - DUK_ASSERT(heap->heap_thread != NULL); - DUK_ASSERT(hdr != NULL); - - if (DUK_HEAPHDR_IS_OBJECT(hdr)) { - duk_hobject_refcount_finalize_norz(heap, (duk_hobject *) hdr); - } - /* DUK_HTYPE_BUFFER: nothing to finalize */ - /* DUK_HTYPE_STRING: nothing to finalize */ -} - -/* - * Refzero processing for duk_hobject: queue a refzero'ed object to either - * finalize_list or refzero_list and process the relevent list(s) if - * necessary. - * - * Refzero_list is single linked, with only 'prev' pointers set and valid. - * All 'next' pointers are intentionally left as garbage. This doesn't - * matter because refzero_list is processed to completion before any other - * code (like mark-and-sweep) might walk the list. - * - * In more detail: - * - * - On first insert refzero_list is NULL and the new object becomes the - * first and only element on the list; duk__refcount_free_pending() is - * called and it starts processing the list from the initial element, - * i.e. the list tail. - * - * - As each object is refcount finalized, new objects may be queued to - * refzero_list head. Their 'next' pointers are left as garbage, but - * 'prev' points are set correctly, with the element at refzero_list - * having a NULL 'prev' pointer. The fact that refzero_list is non-NULL - * is used to reject (1) recursive duk__refcount_free_pending() and - * (2) finalize_list processing calls. - * - * - When we're done with the current object, read its 'prev' pointer and - * free the object. If 'prev' is NULL, we've reached head of list and are - * done: set refzero_list to NULL and process pending finalizers. Otherwise - * continue processing the list. - * - * A refzero cascade is free of side effects because it only involves - * queueing more objects and freeing memory; finalizer execution is blocked - * in the code path queueing objects to finalize_list. As a result the - * initial refzero call (which triggers duk__refcount_free_pending()) must - * check finalize_list so that finalizers are executed snappily. - * - * If finalize_list processing starts first, refzero may occur while we're - * processing finalizers. That's fine: that particular refzero cascade is - * handled to completion without side effects. Once the cascade is complete, - * we'll run pending finalizers but notice that we're already doing that and - * return. - * - * This could be expanded to allow incremental freeing: just bail out - * early and resume at a future alloc/decref/refzero. However, if that - * were done, the list structure would need to be kept consistent at all - * times, mark-and-sweep would need to handle refzero_list, etc. - */ - -DUK_LOCAL void duk__refcount_free_pending(duk_heap *heap) { - duk_heaphdr *curr; -#if defined(DUK_USE_DEBUG) - duk_int_t count = 0; -#endif - - DUK_ASSERT(heap != NULL); - - curr = heap->refzero_list; - DUK_ASSERT(curr != NULL); - DUK_ASSERT(DUK_HEAPHDR_GET_PREV(heap, curr) == NULL); /* We're called on initial insert only. */ - /* curr->next is GARBAGE. */ - - do { - duk_heaphdr *prev; - - DUK_DDD(DUK_DDDPRINT("refzero processing %p: %!O", (void *) curr, (duk_heaphdr *) curr)); - -#if defined(DUK_USE_DEBUG) - count++; -#endif - - DUK_ASSERT(curr != NULL); - DUK_ASSERT(DUK_HEAPHDR_GET_TYPE(curr) == DUK_HTYPE_OBJECT); /* currently, always the case */ - /* FINALIZED may be set; don't care about flags here. */ - - /* Refcount finalize 'curr'. Refzero_list must be non-NULL - * here to prevent recursive entry to duk__refcount_free_pending(). - */ - DUK_ASSERT(heap->refzero_list != NULL); - duk_hobject_refcount_finalize_norz(heap, (duk_hobject *) curr); - - prev = DUK_HEAPHDR_GET_PREV(heap, curr); - DUK_ASSERT((prev == NULL && heap->refzero_list == curr) || (prev != NULL && heap->refzero_list != curr)); - /* prev->next is intentionally not updated and is garbage. */ - - duk_free_hobject(heap, (duk_hobject *) curr); /* Invalidates 'curr'. */ - - curr = prev; - } while (curr != NULL); - - heap->refzero_list = NULL; - - DUK_DD(DUK_DDPRINT("refzero processed %ld objects", (long) count)); -} - -DUK_LOCAL DUK_INLINE void duk__refcount_refzero_hobject(duk_heap *heap, duk_hobject *obj, duk_bool_t skip_free_pending) { - duk_heaphdr *hdr; - duk_heaphdr *root; - - DUK_ASSERT(heap != NULL); - DUK_ASSERT(heap->heap_thread != NULL); - DUK_ASSERT(obj != NULL); - DUK_ASSERT(DUK_HEAPHDR_GET_TYPE((duk_heaphdr *) obj) == DUK_HTYPE_OBJECT); - - hdr = (duk_heaphdr *) obj; - - /* Refzero'd objects must be in heap_allocated. They can't be in - * finalize_list because all objects on finalize_list have an - * artificial +1 refcount bump. - */ -#if defined(DUK_USE_ASSERTIONS) - DUK_ASSERT(duk_heap_in_heap_allocated(heap, (duk_heaphdr *) obj)); -#endif - - DUK_HEAP_REMOVE_FROM_HEAP_ALLOCATED(heap, hdr); - -#if defined(DUK_USE_FINALIZER_SUPPORT) - /* This finalizer check MUST BE side effect free. It should also be - * as fast as possible because it's applied to every object freed. - */ - if (DUK_UNLIKELY(DUK_HOBJECT_HAS_FINALIZER_FAST(heap, (duk_hobject *) hdr) != 0U)) { - /* Special case: FINALIZED may be set if mark-and-sweep queued - * object for finalization, the finalizer was executed (and - * FINALIZED set), mark-and-sweep hasn't yet processed the - * object again, but its refcount drops to zero. Free without - * running the finalizer again. - */ - if (DUK_HEAPHDR_HAS_FINALIZED(hdr)) { - DUK_D(DUK_DPRINT("refzero'd object has finalizer and FINALIZED is set -> free")); - } else { - /* Set FINALIZABLE flag so that all objects on finalize_list - * will have it set and are thus detectable based on the - * flag alone. - */ - DUK_HEAPHDR_SET_FINALIZABLE(hdr); - DUK_ASSERT(!DUK_HEAPHDR_HAS_FINALIZED(hdr)); - -#if defined(DUK_USE_REFERENCE_COUNTING) - /* Bump refcount on finalize_list insert so that a - * refzero can never occur when an object is waiting - * for its finalizer call. Refzero might otherwise - * now happen because we allow duk_push_heapptr() for - * objects pending finalization. - */ - DUK_HEAPHDR_PREINC_REFCOUNT(hdr); -#endif - DUK_HEAP_INSERT_INTO_FINALIZE_LIST(heap, hdr); - - /* Process finalizers unless skipping is explicitly - * requested (NORZ) or refzero_list is being processed - * (avoids side effects during a refzero cascade). - * If refzero_list is processed, the initial refzero - * call will run pending finalizers when refzero_list - * is done. - */ - if (!skip_free_pending && heap->refzero_list == NULL) { - duk_heap_process_finalize_list(heap); - } - return; - } - } -#endif /* DUK_USE_FINALIZER_SUPPORT */ - - /* No need to finalize, free object via refzero_list. */ - - root = heap->refzero_list; - - DUK_HEAPHDR_SET_PREV(heap, hdr, NULL); - /* 'next' is left as GARBAGE. */ - heap->refzero_list = hdr; - - if (root == NULL) { - /* Object is now queued. Refzero_list was NULL so - * no-one is currently processing it; do it here. - * With refzero processing just doing a cascade of - * free calls, we can process it directly even when - * NORZ macros are used: there are no side effects. - */ - duk__refcount_free_pending(heap); - DUK_ASSERT(heap->refzero_list == NULL); - - /* Process finalizers only after the entire cascade - * is finished. In most cases there's nothing to - * finalize, so fast path check to avoid a call. - */ -#if defined(DUK_USE_FINALIZER_SUPPORT) - if (!skip_free_pending && DUK_UNLIKELY(heap->finalize_list != NULL)) { - duk_heap_process_finalize_list(heap); - } -#endif - } else { - DUK_ASSERT(DUK_HEAPHDR_GET_PREV(heap, root) == NULL); - DUK_HEAPHDR_SET_PREV(heap, root, hdr); - - /* Object is now queued. Because refzero_list was - * non-NULL, it's already being processed by someone - * in the C call stack, so we're done. - */ - } -} - -#if defined(DUK_USE_FINALIZER_SUPPORT) -DUK_INTERNAL DUK_ALWAYS_INLINE void duk_refzero_check_fast(duk_hthread *thr) { - DUK_ASSERT(thr != NULL); - DUK_ASSERT(thr->heap != NULL); - DUK_ASSERT(thr->heap->refzero_list == NULL); /* Processed to completion inline. */ - - if (DUK_UNLIKELY(thr->heap->finalize_list != NULL)) { - duk_heap_process_finalize_list(thr->heap); - } -} - -DUK_INTERNAL void duk_refzero_check_slow(duk_hthread *thr) { - DUK_ASSERT(thr != NULL); - DUK_ASSERT(thr->heap != NULL); - DUK_ASSERT(thr->heap->refzero_list == NULL); /* Processed to completion inline. */ - - if (DUK_UNLIKELY(thr->heap->finalize_list != NULL)) { - duk_heap_process_finalize_list(thr->heap); - } -} -#endif /* DUK_USE_FINALIZER_SUPPORT */ - -/* - * Refzero processing for duk_hstring. - */ - -DUK_LOCAL DUK_INLINE void duk__refcount_refzero_hstring(duk_heap *heap, duk_hstring *str) { - DUK_ASSERT(heap != NULL); - DUK_ASSERT(heap->heap_thread != NULL); - DUK_ASSERT(str != NULL); - DUK_ASSERT(DUK_HEAPHDR_GET_TYPE((duk_heaphdr *) str) == DUK_HTYPE_STRING); - - duk_heap_strcache_string_remove(heap, str); - duk_heap_strtable_unlink(heap, str); - duk_free_hstring(heap, str); -} - -/* - * Refzero processing for duk_hbuffer. - */ - -DUK_LOCAL DUK_INLINE void duk__refcount_refzero_hbuffer(duk_heap *heap, duk_hbuffer *buf) { - DUK_ASSERT(heap != NULL); - DUK_ASSERT(heap->heap_thread != NULL); - DUK_ASSERT(buf != NULL); - DUK_ASSERT(DUK_HEAPHDR_GET_TYPE((duk_heaphdr *) buf) == DUK_HTYPE_BUFFER); - - DUK_HEAP_REMOVE_FROM_HEAP_ALLOCATED(heap, (duk_heaphdr *) buf); - duk_free_hbuffer(heap, buf); -} - -/* - * Incref and decref functions. - * - * Decref may trigger immediate refzero handling, which may free and finalize - * an arbitrary number of objects (a "DECREF cascade"). - * - * Refzero handling is skipped entirely if (1) mark-and-sweep is running or - * (2) execution is paused in the debugger. The objects are left in the heap, - * and will be freed by mark-and-sweep or eventual heap destruction. - * - * This is necessary during mark-and-sweep because refcounts are also updated - * during the sweep phase (otherwise objects referenced by a swept object - * would have incorrect refcounts) which then calls here. This could be - * avoided by using separate decref macros in mark-and-sweep; however, - * mark-and-sweep also calls finalizers which would use the ordinary decref - * macros anyway. - * - * We can't process refzeros (= free objects) when the debugger is running - * as the debugger might make an object unreachable but still continue - * inspecting it (or even cause it to be pushed back). So we must rely on - * mark-and-sweep to collect them. - * - * The DUK__RZ_SUPPRESS_CHECK() condition is also used in heap destruction - * when running finalizers for remaining objects: the flag prevents objects - * from being moved around in heap linked lists while that's being done. - * - * The suppress condition is important to performance. - */ - -#define DUK__RZ_SUPPRESS_ASSERT1() \ - do { \ - DUK_ASSERT(thr != NULL); \ - DUK_ASSERT(thr->heap != NULL); \ - /* When mark-and-sweep runs, heap_thread must exist. */ \ - DUK_ASSERT(thr->heap->ms_running == 0 || thr->heap->heap_thread != NULL); \ - /* In normal operation finalizers are executed with ms_running == 0 \ - * so we should never see ms_running == 1 and thr != heap_thread. \ - * In heap destruction finalizers are executed with ms_running != 0 \ - * to e.g. prevent refzero; a special value ms_running == 2 is used \ - * in that case so it can be distinguished from the normal runtime \ - * case, and allows a stronger assertion here (GH-2030). \ - */ \ - DUK_ASSERT(!(thr->heap->ms_running == 1 && thr != thr->heap->heap_thread)); \ - /* We may be called when the heap is initializing and we process \ - * refzeros normally, but mark-and-sweep and finalizers are prevented \ - * if that's the case. \ - */ \ - DUK_ASSERT(thr->heap->heap_initializing == 0 || thr->heap->ms_prevent_count > 0); \ - DUK_ASSERT(thr->heap->heap_initializing == 0 || thr->heap->pf_prevent_count > 0); \ - } while (0) - -#if defined(DUK_USE_DEBUGGER_SUPPORT) -#define DUK__RZ_SUPPRESS_ASSERT2() \ - do { \ - /* When debugger is paused, ms_running is set. */ \ - DUK_ASSERT(!DUK_HEAP_HAS_DEBUGGER_PAUSED(thr->heap) || thr->heap->ms_running != 0); \ - } while (0) -#define DUK__RZ_SUPPRESS_COND() (heap->ms_running != 0) -#else -#define DUK__RZ_SUPPRESS_ASSERT2() \ - do { \ - } while (0) -#define DUK__RZ_SUPPRESS_COND() (heap->ms_running != 0) -#endif /* DUK_USE_DEBUGGER_SUPPORT */ - -#define DUK__RZ_SUPPRESS_CHECK() \ - do { \ - DUK__RZ_SUPPRESS_ASSERT1(); \ - DUK__RZ_SUPPRESS_ASSERT2(); \ - if (DUK_UNLIKELY(DUK__RZ_SUPPRESS_COND())) { \ - DUK_DDD( \ - DUK_DDDPRINT("refzero handling suppressed (not even queued) when mark-and-sweep running, object: %p", \ - (void *) h)); \ - return; \ - } \ - } while (0) - -#define DUK__RZ_STRING() \ - do { \ - duk__refcount_refzero_hstring(heap, (duk_hstring *) h); \ - } while (0) -#define DUK__RZ_BUFFER() \ - do { \ - duk__refcount_refzero_hbuffer(heap, (duk_hbuffer *) h); \ - } while (0) -#define DUK__RZ_OBJECT() \ - do { \ - duk__refcount_refzero_hobject(heap, (duk_hobject *) h, skip_free_pending); \ - } while (0) - -/* XXX: test the effect of inlining here vs. NOINLINE in refzero helpers */ -#if defined(DUK_USE_FAST_REFCOUNT_DEFAULT) -#define DUK__RZ_INLINE DUK_ALWAYS_INLINE -#else -#define DUK__RZ_INLINE /*nop*/ -#endif - -DUK_LOCAL DUK__RZ_INLINE void duk__hstring_refzero_helper(duk_hthread *thr, duk_hstring *h) { - duk_heap *heap; - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(h != NULL); - heap = thr->heap; - - DUK__RZ_SUPPRESS_CHECK(); - DUK__RZ_STRING(); -} - -DUK_LOCAL DUK__RZ_INLINE void duk__hbuffer_refzero_helper(duk_hthread *thr, duk_hbuffer *h) { - duk_heap *heap; - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(h != NULL); - heap = thr->heap; - - DUK__RZ_SUPPRESS_CHECK(); - DUK__RZ_BUFFER(); -} - -DUK_LOCAL DUK__RZ_INLINE void duk__hobject_refzero_helper(duk_hthread *thr, duk_hobject *h, duk_bool_t skip_free_pending) { - duk_heap *heap; - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(h != NULL); - heap = thr->heap; - - DUK__RZ_SUPPRESS_CHECK(); - DUK__RZ_OBJECT(); -} - -DUK_LOCAL DUK__RZ_INLINE void duk__heaphdr_refzero_helper(duk_hthread *thr, duk_heaphdr *h, duk_bool_t skip_free_pending) { - duk_heap *heap; - duk_small_uint_t htype; - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(h != NULL); - heap = thr->heap; - - htype = (duk_small_uint_t) DUK_HEAPHDR_GET_TYPE(h); - DUK_DDD(DUK_DDDPRINT("ms_running=%ld, heap_thread=%p", (long) thr->heap->ms_running, thr->heap->heap_thread)); - DUK__RZ_SUPPRESS_CHECK(); - - switch (htype) { - case DUK_HTYPE_STRING: - /* Strings have no internal references but do have "weak" - * references in the string cache. Also note that strings - * are not on the heap_allocated list like other heap - * elements. - */ - - DUK__RZ_STRING(); - break; - - case DUK_HTYPE_OBJECT: - /* Objects have internal references. Must finalize through - * the "refzero" work list. - */ - - DUK__RZ_OBJECT(); - break; - - default: - /* Buffers have no internal references. However, a dynamic - * buffer has a separate allocation for the buffer. This is - * freed by duk_heap_free_heaphdr_raw(). - */ - - DUK_ASSERT(DUK_HEAPHDR_GET_TYPE(h) == DUK_HTYPE_BUFFER); - DUK__RZ_BUFFER(); - break; - } -} - -DUK_INTERNAL DUK_NOINLINE void duk_heaphdr_refzero(duk_hthread *thr, duk_heaphdr *h) { - duk__heaphdr_refzero_helper(thr, h, 0 /*skip_free_pending*/); -} - -DUK_INTERNAL DUK_NOINLINE void duk_heaphdr_refzero_norz(duk_hthread *thr, duk_heaphdr *h) { - duk__heaphdr_refzero_helper(thr, h, 1 /*skip_free_pending*/); -} - -DUK_INTERNAL DUK_NOINLINE void duk_hstring_refzero(duk_hthread *thr, duk_hstring *h) { - duk__hstring_refzero_helper(thr, h); -} - -DUK_INTERNAL DUK_NOINLINE void duk_hbuffer_refzero(duk_hthread *thr, duk_hbuffer *h) { - duk__hbuffer_refzero_helper(thr, h); -} - -DUK_INTERNAL DUK_NOINLINE void duk_hobject_refzero(duk_hthread *thr, duk_hobject *h) { - duk__hobject_refzero_helper(thr, h, 0 /*skip_free_pending*/); -} - -DUK_INTERNAL DUK_NOINLINE void duk_hobject_refzero_norz(duk_hthread *thr, duk_hobject *h) { - duk__hobject_refzero_helper(thr, h, 1 /*skip_free_pending*/); -} - -#if !defined(DUK_USE_FAST_REFCOUNT_DEFAULT) -DUK_INTERNAL void duk_tval_incref(duk_tval *tv) { - DUK_ASSERT(tv != NULL); - - if (DUK_TVAL_NEEDS_REFCOUNT_UPDATE(tv)) { - duk_heaphdr *h = DUK_TVAL_GET_HEAPHDR(tv); - DUK_ASSERT(h != NULL); - DUK_ASSERT(DUK_HEAPHDR_HTYPE_VALID(h)); - DUK_ASSERT_DISABLE(h->h_refcount >= 0); - DUK_HEAPHDR_PREINC_REFCOUNT(h); - DUK_ASSERT(DUK_HEAPHDR_GET_REFCOUNT(h) != 0); /* No wrapping. */ - } -} - -DUK_INTERNAL void duk_tval_decref(duk_hthread *thr, duk_tval *tv) { - DUK_ASSERT(thr != NULL); - DUK_ASSERT(tv != NULL); - - if (DUK_TVAL_NEEDS_REFCOUNT_UPDATE(tv)) { - duk_heaphdr *h = DUK_TVAL_GET_HEAPHDR(tv); - DUK_ASSERT(h != NULL); - DUK_ASSERT(DUK_HEAPHDR_HTYPE_VALID(h)); - DUK_ASSERT(DUK_HEAPHDR_GET_REFCOUNT(h) >= 1); -#if 0 - if (DUK_HEAPHDR_PREDEC_REFCOUNT(h) != 0) { - return; - } - duk_heaphdr_refzero(thr, h); -#else - duk_heaphdr_decref(thr, h); -#endif - } -} - -DUK_INTERNAL void duk_tval_decref_norz(duk_hthread *thr, duk_tval *tv) { - DUK_ASSERT(thr != NULL); - DUK_ASSERT(tv != NULL); - - if (DUK_TVAL_NEEDS_REFCOUNT_UPDATE(tv)) { - duk_heaphdr *h = DUK_TVAL_GET_HEAPHDR(tv); - DUK_ASSERT(h != NULL); - DUK_ASSERT(DUK_HEAPHDR_HTYPE_VALID(h)); - DUK_ASSERT(DUK_HEAPHDR_GET_REFCOUNT(h) >= 1); -#if 0 - if (DUK_HEAPHDR_PREDEC_REFCOUNT(h) != 0) { - return; - } - duk_heaphdr_refzero_norz(thr, h); -#else - duk_heaphdr_decref_norz(thr, h); -#endif - } -} -#endif /* !DUK_USE_FAST_REFCOUNT_DEFAULT */ - -#define DUK__DECREF_ASSERTS() \ - do { \ - DUK_ASSERT(thr != NULL); \ - DUK_ASSERT(thr->heap != NULL); \ - DUK_ASSERT(h != NULL); \ - DUK_ASSERT(DUK_HEAPHDR_HTYPE_VALID((duk_heaphdr *) h)); \ - DUK_ASSERT(DUK_HEAPHDR_GET_REFCOUNT((duk_heaphdr *) h) >= 1); \ - } while (0) -#if defined(DUK_USE_ROM_OBJECTS) -#define DUK__INCREF_SHARED() \ - do { \ - if (DUK_HEAPHDR_HAS_READONLY((duk_heaphdr *) h)) { \ - return; \ - } \ - DUK_HEAPHDR_PREINC_REFCOUNT((duk_heaphdr *) h); \ - DUK_ASSERT(DUK_HEAPHDR_GET_REFCOUNT((duk_heaphdr *) h) != 0); /* No wrapping. */ \ - } while (0) -#define DUK__DECREF_SHARED() \ - do { \ - if (DUK_HEAPHDR_HAS_READONLY((duk_heaphdr *) h)) { \ - return; \ - } \ - if (DUK_HEAPHDR_PREDEC_REFCOUNT((duk_heaphdr *) h) != 0) { \ - return; \ - } \ - } while (0) -#else -#define DUK__INCREF_SHARED() \ - do { \ - DUK_HEAPHDR_PREINC_REFCOUNT((duk_heaphdr *) h); \ - DUK_ASSERT(DUK_HEAPHDR_GET_REFCOUNT((duk_heaphdr *) h) != 0); /* No wrapping. */ \ - } while (0) -#define DUK__DECREF_SHARED() \ - do { \ - if (DUK_HEAPHDR_PREDEC_REFCOUNT((duk_heaphdr *) h) != 0) { \ - return; \ - } \ - } while (0) -#endif - -#if !defined(DUK_USE_FAST_REFCOUNT_DEFAULT) -/* This will in practice be inlined because it's just an INC instructions - * and a bit test + INC when ROM objects are enabled. - */ -DUK_INTERNAL void duk_heaphdr_incref(duk_heaphdr *h) { - DUK_ASSERT(h != NULL); - DUK_ASSERT(DUK_HEAPHDR_HTYPE_VALID(h)); - DUK_ASSERT_DISABLE(DUK_HEAPHDR_GET_REFCOUNT(h) >= 0); - - DUK__INCREF_SHARED(); -} - -DUK_INTERNAL void duk_heaphdr_decref(duk_hthread *thr, duk_heaphdr *h) { - DUK__DECREF_ASSERTS(); - DUK__DECREF_SHARED(); - duk_heaphdr_refzero(thr, h); - - /* Forced mark-and-sweep when GC torture enabled; this could happen - * on any DECREF (but not DECREF_NORZ). - */ - DUK_GC_TORTURE(thr->heap); -} -DUK_INTERNAL void duk_heaphdr_decref_norz(duk_hthread *thr, duk_heaphdr *h) { - DUK__DECREF_ASSERTS(); - DUK__DECREF_SHARED(); - duk_heaphdr_refzero_norz(thr, h); -} -#endif /* !DUK_USE_FAST_REFCOUNT_DEFAULT */ - -#if 0 /* Not needed. */ -DUK_INTERNAL void duk_hstring_decref(duk_hthread *thr, duk_hstring *h) { - DUK__DECREF_ASSERTS(); - DUK__DECREF_SHARED(); - duk_hstring_refzero(thr, h); -} -DUK_INTERNAL void duk_hstring_decref_norz(duk_hthread *thr, duk_hstring *h) { - DUK__DECREF_ASSERTS(); - DUK__DECREF_SHARED(); - duk_hstring_refzero_norz(thr, h); -} -DUK_INTERNAL void duk_hbuffer_decref(duk_hthread *thr, duk_hbuffer *h) { - DUK__DECREF_ASSERTS(); - DUK__DECREF_SHARED(); - duk_hbuffer_refzero(thr, h); -} -DUK_INTERNAL void duk_hbuffer_decref_norz(duk_hthread *thr, duk_hbuffer *h) { - DUK__DECREF_ASSERTS(); - DUK__DECREF_SHARED(); - duk_hbuffer_refzero_norz(thr, h); -} -DUK_INTERNAL void duk_hobject_decref(duk_hthread *thr, duk_hobject *h) { - DUK__DECREF_ASSERTS(); - DUK__DECREF_SHARED(); - duk_hobject_refzero(thr, h); -} -DUK_INTERNAL void duk_hobject_decref_norz(duk_hthread *thr, duk_hobject *h) { - DUK__DECREF_ASSERTS(); - DUK__DECREF_SHARED(); - duk_hobject_refzero_norz(thr, h); -} -#endif - -#else /* DUK_USE_REFERENCE_COUNTING */ - -/* no refcounting */ - -#endif /* DUK_USE_REFERENCE_COUNTING */ - -/* automatic undefs */ -#undef DUK__DECREF_ASSERTS -#undef DUK__DECREF_SHARED -#undef DUK__INCREF_SHARED -#undef DUK__RZ_BUFFER -#undef DUK__RZ_INLINE -#undef DUK__RZ_OBJECT -#undef DUK__RZ_STRING -#undef DUK__RZ_SUPPRESS_ASSERT1 -#undef DUK__RZ_SUPPRESS_ASSERT2 -#undef DUK__RZ_SUPPRESS_CHECK -#undef DUK__RZ_SUPPRESS_COND -#line 1 "duk_heap_stringcache.c" -/* - * String cache. - * - * Provides a cache to optimize indexed string lookups. The cache keeps - * track of (byte offset, char offset) states for a fixed number of strings. - * Otherwise we'd need to scan from either end of the string, as we store - * strings in (extended) UTF-8. - */ - -/* #include duk_internal.h -> already included */ - -/* - * Delete references to given hstring from the heap string cache. - * - * String cache references are 'weak': they are not counted towards - * reference counts, nor serve as roots for mark-and-sweep. When an - * object is about to be freed, such references need to be removed. - */ - -DUK_INTERNAL void duk_heap_strcache_string_remove(duk_heap *heap, duk_hstring *h) { - duk_uint_t i; - for (i = 0; i < DUK_HEAP_STRCACHE_SIZE; i++) { - duk_strcache_entry *c = heap->strcache + i; - if (c->h == h) { - DUK_DD( - DUK_DDPRINT("deleting weak strcache reference to hstring %p from heap %p", (void *) h, (void *) heap)); - c->h = NULL; - - /* XXX: the string shouldn't appear twice, but we now loop to the - * end anyway; if fixed, add a looping assertion to ensure there - * is no duplicate. - */ - } - } -} - -/* - * String scanning helpers - * - * All bytes other than UTF-8 continuation bytes ([0x80,0xbf]) are - * considered to contribute a character. This must match how string - * character length is computed. - */ - -DUK_LOCAL const duk_uint8_t *duk__scan_forwards(const duk_uint8_t *p, const duk_uint8_t *q, duk_uint_fast32_t n) { - while (n > 0) { - for (;;) { - p++; - if (p >= q) { - return NULL; - } - if ((*p & 0xc0) != 0x80) { - break; - } - } - n--; - } - return p; -} - -DUK_LOCAL const duk_uint8_t *duk__scan_backwards(const duk_uint8_t *p, const duk_uint8_t *q, duk_uint_fast32_t n) { - while (n > 0) { - for (;;) { - p--; - if (p < q) { - return NULL; - } - if ((*p & 0xc0) != 0x80) { - break; - } - } - n--; - } - return p; -} - -/* - * Convert char offset to byte offset - * - * Avoid using the string cache if possible: for ASCII strings byte and - * char offsets are equal and for short strings direct scanning may be - * better than using the string cache (which may evict a more important - * entry). - * - * Typing now assumes 32-bit string byte/char offsets (duk_uint_fast32_t). - * Better typing might be to use duk_size_t. - * - * Caller should ensure 'char_offset' is within the string bounds [0,charlen] - * (endpoint is inclusive). If this is not the case, no memory unsafe - * behavior will happen but an error will be thrown. - */ - -DUK_INTERNAL duk_uint_fast32_t duk_heap_strcache_offset_char2byte(duk_hthread *thr, duk_hstring *h, duk_uint_fast32_t char_offset) { - duk_heap *heap; - duk_strcache_entry *sce; - duk_uint_fast32_t byte_offset; - duk_uint_t i; - duk_bool_t use_cache; - duk_uint_fast32_t dist_start, dist_end, dist_sce; - duk_uint_fast32_t char_length; - const duk_uint8_t *p_start; - const duk_uint8_t *p_end; - const duk_uint8_t *p_found; - - /* - * For ASCII strings, the answer is simple. - */ - - if (DUK_LIKELY(DUK_HSTRING_IS_ASCII(h))) { - return char_offset; - } - - char_length = (duk_uint_fast32_t) DUK_HSTRING_GET_CHARLEN(h); - DUK_ASSERT(char_offset <= char_length); - - if (DUK_LIKELY(DUK_HSTRING_IS_ASCII(h))) { - /* Must recheck because the 'is ascii' flag may be set - * lazily. Alternatively, we could just compare charlen - * to bytelen. - */ - return char_offset; - } - - /* - * For non-ASCII strings, we need to scan forwards or backwards - * from some starting point. The starting point may be the start - * or end of the string, or some cached midpoint in the string - * cache. - * - * For "short" strings we simply scan without checking or updating - * the cache. For longer strings we check and update the cache as - * necessary, inserting a new cache entry if none exists. - */ - - DUK_DDD(DUK_DDDPRINT("non-ascii string %p, char_offset=%ld, clen=%ld, blen=%ld", - (void *) h, - (long) char_offset, - (long) DUK_HSTRING_GET_CHARLEN(h), - (long) DUK_HSTRING_GET_BYTELEN(h))); - - heap = thr->heap; - sce = NULL; - use_cache = (char_length > DUK_HEAP_STRINGCACHE_NOCACHE_LIMIT); - - if (use_cache) { -#if defined(DUK_USE_DEBUG_LEVEL) && (DUK_USE_DEBUG_LEVEL >= 2) - DUK_DDD(DUK_DDDPRINT("stringcache before char2byte (using cache):")); - for (i = 0; i < DUK_HEAP_STRCACHE_SIZE; i++) { - duk_strcache_entry *c = heap->strcache + i; - DUK_DDD(DUK_DDDPRINT(" [%ld] -> h=%p, cidx=%ld, bidx=%ld", - (long) i, - (void *) c->h, - (long) c->cidx, - (long) c->bidx)); - } -#endif - - for (i = 0; i < DUK_HEAP_STRCACHE_SIZE; i++) { - duk_strcache_entry *c = heap->strcache + i; - - if (c->h == h) { - sce = c; - break; - } - } - } - - /* - * Scan from shortest distance: - * - start of string - * - end of string - * - cache entry (if exists) - */ - - DUK_ASSERT(DUK_HSTRING_GET_CHARLEN(h) >= char_offset); - dist_start = char_offset; - dist_end = char_length - char_offset; - dist_sce = 0; - DUK_UNREF(dist_sce); /* initialize for debug prints, needed if sce==NULL */ - - p_start = (const duk_uint8_t *) DUK_HSTRING_GET_DATA(h); - p_end = (const duk_uint8_t *) (p_start + DUK_HSTRING_GET_BYTELEN(h)); - p_found = NULL; - - if (sce) { - if (char_offset >= sce->cidx) { - dist_sce = char_offset - sce->cidx; - if ((dist_sce <= dist_start) && (dist_sce <= dist_end)) { - DUK_DDD(DUK_DDDPRINT("non-ascii string, use_cache=%ld, sce=%p:%ld:%ld, " - "dist_start=%ld, dist_end=%ld, dist_sce=%ld => " - "scan forwards from sce", - (long) use_cache, - (void *) (sce ? sce->h : NULL), - (sce ? (long) sce->cidx : (long) -1), - (sce ? (long) sce->bidx : (long) -1), - (long) dist_start, - (long) dist_end, - (long) dist_sce)); - - p_found = duk__scan_forwards(p_start + sce->bidx, p_end, dist_sce); - goto scan_done; - } - } else { - dist_sce = sce->cidx - char_offset; - if ((dist_sce <= dist_start) && (dist_sce <= dist_end)) { - DUK_DDD(DUK_DDDPRINT("non-ascii string, use_cache=%ld, sce=%p:%ld:%ld, " - "dist_start=%ld, dist_end=%ld, dist_sce=%ld => " - "scan backwards from sce", - (long) use_cache, - (void *) (sce ? sce->h : NULL), - (sce ? (long) sce->cidx : (long) -1), - (sce ? (long) sce->bidx : (long) -1), - (long) dist_start, - (long) dist_end, - (long) dist_sce)); - - p_found = duk__scan_backwards(p_start + sce->bidx, p_start, dist_sce); - goto scan_done; - } - } - } - - /* no sce, or sce scan not best */ - - if (dist_start <= dist_end) { - DUK_DDD(DUK_DDDPRINT("non-ascii string, use_cache=%ld, sce=%p:%ld:%ld, " - "dist_start=%ld, dist_end=%ld, dist_sce=%ld => " - "scan forwards from string start", - (long) use_cache, - (void *) (sce ? sce->h : NULL), - (sce ? (long) sce->cidx : (long) -1), - (sce ? (long) sce->bidx : (long) -1), - (long) dist_start, - (long) dist_end, - (long) dist_sce)); - - p_found = duk__scan_forwards(p_start, p_end, dist_start); - } else { - DUK_DDD(DUK_DDDPRINT("non-ascii string, use_cache=%ld, sce=%p:%ld:%ld, " - "dist_start=%ld, dist_end=%ld, dist_sce=%ld => " - "scan backwards from string end", - (long) use_cache, - (void *) (sce ? sce->h : NULL), - (sce ? (long) sce->cidx : (long) -1), - (sce ? (long) sce->bidx : (long) -1), - (long) dist_start, - (long) dist_end, - (long) dist_sce)); - - p_found = duk__scan_backwards(p_end, p_start, dist_end); - } - -scan_done: - - if (DUK_UNLIKELY(p_found == NULL)) { - /* Scan error: this shouldn't normally happen; it could happen if - * string is not valid UTF-8 data, and clen/blen are not consistent - * with the scanning algorithm. - */ - goto scan_error; - } - - DUK_ASSERT(p_found >= p_start); - DUK_ASSERT(p_found <= p_end); /* may be equal */ - byte_offset = (duk_uint32_t) (p_found - p_start); - - DUK_DDD(DUK_DDDPRINT("-> string %p, cidx %ld -> bidx %ld", (void *) h, (long) char_offset, (long) byte_offset)); - - /* - * Update cache entry (allocating if necessary), and move the - * cache entry to the first place (in an "LRU" policy). - */ - - if (use_cache) { - /* update entry, allocating if necessary */ - if (!sce) { - sce = heap->strcache + DUK_HEAP_STRCACHE_SIZE - 1; /* take last entry */ - sce->h = h; - } - DUK_ASSERT(sce != NULL); - sce->bidx = (duk_uint32_t) (p_found - p_start); - sce->cidx = (duk_uint32_t) char_offset; - - /* LRU: move our entry to first */ - if (sce > &heap->strcache[0]) { - /* - * A C - * B A - * C <- sce ==> B - * D D - */ - duk_strcache_entry tmp; - - tmp = *sce; - duk_memmove((void *) (&heap->strcache[1]), - (const void *) (&heap->strcache[0]), - (size_t) (((char *) sce) - ((char *) &heap->strcache[0]))); - heap->strcache[0] = tmp; - - /* 'sce' points to the wrong entry here, but is no longer used */ - } -#if defined(DUK_USE_DEBUG_LEVEL) && (DUK_USE_DEBUG_LEVEL >= 2) - DUK_DDD(DUK_DDDPRINT("stringcache after char2byte (using cache):")); - for (i = 0; i < DUK_HEAP_STRCACHE_SIZE; i++) { - duk_strcache_entry *c = heap->strcache + i; - DUK_DDD(DUK_DDDPRINT(" [%ld] -> h=%p, cidx=%ld, bidx=%ld", - (long) i, - (void *) c->h, - (long) c->cidx, - (long) c->bidx)); - } -#endif - } - - return byte_offset; - -scan_error: - DUK_ERROR_INTERNAL(thr); - DUK_WO_NORETURN(return 0;); -} -#line 1 "duk_heap_stringtable.c" -/* - * Heap string table handling, string interning. - */ - -/* #include duk_internal.h -> already included */ - -/* Resize checks not needed if minsize == maxsize, typical for low memory - * targets. - */ -#define DUK__STRTAB_RESIZE_CHECK -#if (DUK_USE_STRTAB_MINSIZE == DUK_USE_STRTAB_MAXSIZE) -#undef DUK__STRTAB_RESIZE_CHECK -#endif - -#if defined(DUK_USE_STRTAB_PTRCOMP) -#define DUK__HEAPPTR_ENC16(heap, ptr) DUK_USE_HEAPPTR_ENC16((heap)->heap_udata, (ptr)) -#define DUK__HEAPPTR_DEC16(heap, val) DUK_USE_HEAPPTR_DEC16((heap)->heap_udata, (val)) -#define DUK__GET_STRTABLE(heap) ((heap)->strtable16) -#else -#define DUK__HEAPPTR_ENC16(heap, ptr) (ptr) -#define DUK__HEAPPTR_DEC16(heap, val) (val) -#define DUK__GET_STRTABLE(heap) ((heap)->strtable) -#endif - -#define DUK__STRTAB_U32_MAX_STRLEN 10 /* 4'294'967'295 */ - -/* - * Debug dump stringtable. - */ - -#if defined(DUK_USE_DEBUG) -DUK_INTERNAL void duk_heap_strtable_dump(duk_heap *heap) { -#if defined(DUK_USE_STRTAB_PTRCOMP) - duk_uint16_t *strtable; -#else - duk_hstring **strtable; -#endif - duk_uint32_t i; - duk_hstring *h; - duk_size_t count_total = 0; - duk_size_t count_chain; - duk_size_t count_chain_min = DUK_SIZE_MAX; - duk_size_t count_chain_max = 0; - duk_size_t count_len[8]; /* chain lengths from 0 to 7 */ - - if (heap == NULL) { - DUK_D(DUK_DPRINT("string table, heap=NULL")); - return; - } - - strtable = DUK__GET_STRTABLE(heap); - if (strtable == NULL) { - DUK_D(DUK_DPRINT("string table, strtab=NULL")); - return; - } - - duk_memzero((void *) count_len, sizeof(count_len)); - for (i = 0; i < heap->st_size; i++) { - h = DUK__HEAPPTR_DEC16(heap, strtable[i]); - count_chain = 0; - while (h != NULL) { - count_chain++; - h = h->hdr.h_next; - } - if (count_chain < sizeof(count_len) / sizeof(duk_size_t)) { - count_len[count_chain]++; - } - count_chain_max = (count_chain > count_chain_max ? count_chain : count_chain_max); - count_chain_min = (count_chain < count_chain_min ? count_chain : count_chain_min); - count_total += count_chain; - } - - DUK_D(DUK_DPRINT("string table, strtab=%p, count=%lu, chain min=%lu max=%lu avg=%lf: " - "counts: %lu %lu %lu %lu %lu %lu %lu %lu ...", - (void *) heap->strtable, - (unsigned long) count_total, - (unsigned long) count_chain_min, - (unsigned long) count_chain_max, - (double) count_total / (double) heap->st_size, - (unsigned long) count_len[0], - (unsigned long) count_len[1], - (unsigned long) count_len[2], - (unsigned long) count_len[3], - (unsigned long) count_len[4], - (unsigned long) count_len[5], - (unsigned long) count_len[6], - (unsigned long) count_len[7])); -} -#endif /* DUK_USE_DEBUG */ - -/* - * Assertion helper to ensure strtable is populated correctly. - */ - -#if defined(DUK_USE_ASSERTIONS) -DUK_LOCAL void duk__strtable_assert_checks(duk_heap *heap) { -#if defined(DUK_USE_STRTAB_PTRCOMP) - duk_uint16_t *strtable; -#else - duk_hstring **strtable; -#endif - duk_uint32_t i; - duk_hstring *h; - duk_size_t count = 0; - - DUK_ASSERT(heap != NULL); - - strtable = DUK__GET_STRTABLE(heap); - if (strtable != NULL) { - DUK_ASSERT(heap->st_size != 0); - DUK_ASSERT(heap->st_mask == heap->st_size - 1); - - for (i = 0; i < heap->st_size; i++) { - h = DUK__HEAPPTR_DEC16(heap, strtable[i]); - while (h != NULL) { - DUK_ASSERT((DUK_HSTRING_GET_HASH(h) & heap->st_mask) == i); - count++; - h = h->hdr.h_next; - } - } - } else { - DUK_ASSERT(heap->st_size == 0); - DUK_ASSERT(heap->st_mask == 0); - } - -#if defined(DUK__STRTAB_RESIZE_CHECK) - DUK_ASSERT(count == (duk_size_t) heap->st_count); -#endif -} -#endif /* DUK_USE_ASSERTIONS */ - -/* - * Allocate and initialize a duk_hstring. - * - * Returns a NULL if allocation or initialization fails for some reason. - * - * The string won't be inserted into the string table and isn't tracked in - * any way (link pointers will be NULL). The caller must place the string - * into the string table without any risk of a longjmp, otherwise the string - * is leaked. - */ - -DUK_LOCAL duk_hstring *duk__strtable_alloc_hstring(duk_heap *heap, - const duk_uint8_t *str, - duk_uint32_t blen, - duk_uint32_t strhash, - const duk_uint8_t *extdata) { - duk_hstring *res; - const duk_uint8_t *data; -#if !defined(DUK_USE_HSTRING_ARRIDX) - duk_uarridx_t dummy; -#endif - - DUK_ASSERT(heap != NULL); - DUK_UNREF(extdata); - -#if defined(DUK_USE_STRLEN16) - /* If blen <= 0xffffUL, clen is also guaranteed to be <= 0xffffUL. */ - if (blen > 0xffffUL) { - DUK_D(DUK_DPRINT("16-bit string blen/clen active and blen over 16 bits, reject intern")); - goto alloc_error; - } -#endif - - /* XXX: Memzeroing the allocated structure is not really necessary - * because we could just initialize all fields explicitly (almost - * all fields are initialized explicitly anyway). - */ -#if defined(DUK_USE_HSTRING_EXTDATA) && defined(DUK_USE_EXTSTR_INTERN_CHECK) - if (extdata) { - res = (duk_hstring *) DUK_ALLOC(heap, sizeof(duk_hstring_external)); - if (DUK_UNLIKELY(res == NULL)) { - goto alloc_error; - } - duk_memzero(res, sizeof(duk_hstring_external)); -#if defined(DUK_USE_EXPLICIT_NULL_INIT) - DUK_HEAPHDR_STRING_INIT_NULLS(&res->hdr); -#endif - DUK_HEAPHDR_SET_TYPE_AND_FLAGS(&res->hdr, DUK_HTYPE_STRING, DUK_HSTRING_FLAG_EXTDATA); - - DUK_ASSERT(extdata[blen] == 0); /* Application responsibility. */ - data = extdata; - ((duk_hstring_external *) res)->extdata = extdata; - } else -#endif /* DUK_USE_HSTRING_EXTDATA && DUK_USE_EXTSTR_INTERN_CHECK */ - { - duk_uint8_t *data_tmp; - - /* NUL terminate for convenient C access */ - DUK_ASSERT(sizeof(duk_hstring) + blen + 1 > blen); /* No wrap, limits ensure. */ - res = (duk_hstring *) DUK_ALLOC(heap, sizeof(duk_hstring) + blen + 1); - if (DUK_UNLIKELY(res == NULL)) { - goto alloc_error; - } - duk_memzero(res, sizeof(duk_hstring)); -#if defined(DUK_USE_EXPLICIT_NULL_INIT) - DUK_HEAPHDR_STRING_INIT_NULLS(&res->hdr); -#endif - DUK_HEAPHDR_SET_TYPE_AND_FLAGS(&res->hdr, DUK_HTYPE_STRING, 0); - - data_tmp = (duk_uint8_t *) (res + 1); - duk_memcpy(data_tmp, str, blen); - data_tmp[blen] = (duk_uint8_t) 0; - data = (const duk_uint8_t *) data_tmp; - } - - DUK_HSTRING_SET_BYTELEN(res, blen); - DUK_HSTRING_SET_HASH(res, strhash); - - DUK_ASSERT(!DUK_HSTRING_HAS_ARRIDX(res)); -#if defined(DUK_USE_HSTRING_ARRIDX) - res->arridx = duk_js_to_arrayindex_string(data, blen); - if (res->arridx != DUK_HSTRING_NO_ARRAY_INDEX) { -#else - dummy = duk_js_to_arrayindex_string(data, blen); - if (dummy != DUK_HSTRING_NO_ARRAY_INDEX) { -#endif - /* Array index strings cannot be symbol strings, - * and they're always pure ASCII so blen == clen. - */ - DUK_HSTRING_SET_ARRIDX(res); - DUK_HSTRING_SET_ASCII(res); - DUK_ASSERT(duk_unicode_unvalidated_utf8_length(data, (duk_size_t) blen) == blen); - } else { - /* Because 'data' is NUL-terminated, we don't need a - * blen > 0 check here. For NUL (0x00) the symbol - * checks will be false. - */ - if (DUK_UNLIKELY(data[0] >= 0x80U)) { - if (data[0] <= 0x81) { - DUK_HSTRING_SET_SYMBOL(res); - } else if (data[0] == 0x82U || data[0] == 0xffU) { - DUK_HSTRING_SET_HIDDEN(res); - DUK_HSTRING_SET_SYMBOL(res); - } - } - - /* Using an explicit 'ASCII' flag has larger footprint (one call site - * only) but is quite useful for the case when there's no explicit - * 'clen' in duk_hstring. - * - * The flag is set lazily for RAM strings. - */ - DUK_ASSERT(!DUK_HSTRING_HAS_ASCII(res)); - -#if defined(DUK_USE_HSTRING_LAZY_CLEN) - /* Charlen initialized to 0, updated on-the-fly. */ -#else - duk_hstring_init_charlen(res); /* Also sets ASCII flag. */ -#endif - } - - DUK_DDD(DUK_DDDPRINT("interned string, hash=0x%08lx, blen=%ld, has_arridx=%ld, has_extdata=%ld", - (unsigned long) DUK_HSTRING_GET_HASH(res), - (long) DUK_HSTRING_GET_BYTELEN(res), - (long) (DUK_HSTRING_HAS_ARRIDX(res) ? 1 : 0), - (long) (DUK_HSTRING_HAS_EXTDATA(res) ? 1 : 0))); - - DUK_ASSERT(res != NULL); - return res; - -alloc_error: - return NULL; -} - -/* - * Grow strtable allocation in-place. - */ - -#if defined(DUK__STRTAB_RESIZE_CHECK) -DUK_LOCAL void duk__strtable_grow_inplace(duk_heap *heap) { - duk_uint32_t new_st_size; - duk_uint32_t old_st_size; - duk_uint32_t i; - duk_hstring *h; - duk_hstring *next; - duk_hstring *prev; -#if defined(DUK_USE_STRTAB_PTRCOMP) - duk_uint16_t *new_ptr; - duk_uint16_t *new_ptr_high; -#else - duk_hstring **new_ptr; - duk_hstring **new_ptr_high; -#endif - - DUK_DD(DUK_DDPRINT("grow in-place: %lu -> %lu", (unsigned long) heap->st_size, (unsigned long) heap->st_size * 2)); - - DUK_ASSERT(heap != NULL); - DUK_ASSERT(heap->st_resizing == 1); - DUK_ASSERT(heap->st_size >= 2); - DUK_ASSERT((heap->st_size & (heap->st_size - 1)) == 0); /* 2^N */ - DUK_ASSERT(DUK__GET_STRTABLE(heap) != NULL); - - DUK_STATS_INC(heap, stats_strtab_resize_grow); - - new_st_size = heap->st_size << 1U; - DUK_ASSERT(new_st_size > heap->st_size); /* No overflow. */ - - /* Reallocate the strtable first and then work in-place to rehash - * strings. We don't need an indirect allocation here: even if GC - * is triggered to satisfy the allocation, recursive strtable resize - * is prevented by flags. This is also why we don't need to use - * DUK_REALLOC_INDIRECT(). - */ - -#if defined(DUK_USE_STRTAB_PTRCOMP) - new_ptr = (duk_uint16_t *) DUK_REALLOC(heap, heap->strtable16, sizeof(duk_uint16_t) * new_st_size); -#else - new_ptr = (duk_hstring **) DUK_REALLOC(heap, heap->strtable, sizeof(duk_hstring *) * new_st_size); -#endif - if (DUK_UNLIKELY(new_ptr == NULL)) { - /* If realloc fails we can continue normally: the string table - * won't "fill up" although chains will gradually get longer. - * When string insertions continue, we'll quite soon try again - * with no special handling. - */ - DUK_D(DUK_DPRINT("string table grow failed, ignoring")); - return; - } -#if defined(DUK_USE_STRTAB_PTRCOMP) - heap->strtable16 = new_ptr; -#else - heap->strtable = new_ptr; -#endif - - /* Rehash a single bucket into two separate ones. When we grow - * by x2 the highest 'new' bit determines whether a string remains - * in its old position (bit is 0) or goes to a new one (bit is 1). - */ - - old_st_size = heap->st_size; - new_ptr_high = new_ptr + old_st_size; - for (i = 0; i < old_st_size; i++) { - duk_hstring *new_root; - duk_hstring *new_root_high; - - h = DUK__HEAPPTR_DEC16(heap, new_ptr[i]); - new_root = h; - new_root_high = NULL; - - prev = NULL; - while (h != NULL) { - duk_uint32_t mask; - - DUK_ASSERT((DUK_HSTRING_GET_HASH(h) & heap->st_mask) == i); - next = h->hdr.h_next; - - /* Example: if previous size was 256, previous mask is 0xFF - * and size is 0x100 which corresponds to the new bit that - * comes into play. - */ - DUK_ASSERT(heap->st_mask == old_st_size - 1); - mask = old_st_size; - if (DUK_HSTRING_GET_HASH(h) & mask) { - if (prev != NULL) { - prev->hdr.h_next = h->hdr.h_next; - } else { - DUK_ASSERT(h == new_root); - new_root = h->hdr.h_next; - } - - h->hdr.h_next = new_root_high; - new_root_high = h; - } else { - prev = h; - } - h = next; - } - - new_ptr[i] = DUK__HEAPPTR_ENC16(heap, new_root); - new_ptr_high[i] = DUK__HEAPPTR_ENC16(heap, new_root_high); - } - - heap->st_size = new_st_size; - heap->st_mask = new_st_size - 1; - -#if defined(DUK_USE_ASSERTIONS) - duk__strtable_assert_checks(heap); -#endif -} -#endif /* DUK__STRTAB_RESIZE_CHECK */ - -/* - * Shrink strtable allocation in-place. - */ - -#if defined(DUK__STRTAB_RESIZE_CHECK) -DUK_LOCAL void duk__strtable_shrink_inplace(duk_heap *heap) { - duk_uint32_t new_st_size; - duk_uint32_t i; - duk_hstring *h; - duk_hstring *other; - duk_hstring *root; -#if defined(DUK_USE_STRTAB_PTRCOMP) - duk_uint16_t *old_ptr; - duk_uint16_t *old_ptr_high; - duk_uint16_t *new_ptr; -#else - duk_hstring **old_ptr; - duk_hstring **old_ptr_high; - duk_hstring **new_ptr; -#endif - - DUK_DD(DUK_DDPRINT("shrink in-place: %lu -> %lu", (unsigned long) heap->st_size, (unsigned long) heap->st_size / 2)); - - DUK_ASSERT(heap != NULL); - DUK_ASSERT(heap->st_resizing == 1); - DUK_ASSERT(heap->st_size >= 2); - DUK_ASSERT((heap->st_size & (heap->st_size - 1)) == 0); /* 2^N */ - DUK_ASSERT(DUK__GET_STRTABLE(heap) != NULL); - - DUK_STATS_INC(heap, stats_strtab_resize_shrink); - - new_st_size = heap->st_size >> 1U; - - /* Combine two buckets into a single one. When we shrink, one hash - * bit (highest) disappears. - */ - old_ptr = DUK__GET_STRTABLE(heap); - old_ptr_high = old_ptr + new_st_size; - for (i = 0; i < new_st_size; i++) { - h = DUK__HEAPPTR_DEC16(heap, old_ptr[i]); - other = DUK__HEAPPTR_DEC16(heap, old_ptr_high[i]); - - if (h == NULL) { - /* First chain is empty, so use second one as is. */ - root = other; - } else { - /* Find end of first chain, and link in the second. */ - root = h; - while (h->hdr.h_next != NULL) { - h = h->hdr.h_next; - } - h->hdr.h_next = other; - } - - old_ptr[i] = DUK__HEAPPTR_ENC16(heap, root); - } - - heap->st_size = new_st_size; - heap->st_mask = new_st_size - 1; - - /* The strtable is now consistent and we can realloc safely. Even - * if side effects cause string interning or removal the strtable - * updates are safe. Recursive resize has been prevented by caller. - * This is also why we don't need to use DUK_REALLOC_INDIRECT(). - * - * We assume a realloc() to a smaller size is guaranteed to succeed. - * It would be relatively straightforward to handle the error by - * essentially performing a "grow" step to recover. - */ - -#if defined(DUK_USE_STRTAB_PTRCOMP) - new_ptr = (duk_uint16_t *) DUK_REALLOC(heap, heap->strtable16, sizeof(duk_uint16_t) * new_st_size); - DUK_ASSERT(new_ptr != NULL); - heap->strtable16 = new_ptr; -#else - new_ptr = (duk_hstring **) DUK_REALLOC(heap, heap->strtable, sizeof(duk_hstring *) * new_st_size); - DUK_ASSERT(new_ptr != NULL); - heap->strtable = new_ptr; -#endif - -#if defined(DUK_USE_ASSERTIONS) - duk__strtable_assert_checks(heap); -#endif -} -#endif /* DUK__STRTAB_RESIZE_CHECK */ - -/* - * Grow/shrink check. - */ - -#if defined(DUK__STRTAB_RESIZE_CHECK) -DUK_LOCAL DUK_COLD DUK_NOINLINE void duk__strtable_resize_check(duk_heap *heap) { - duk_uint32_t load_factor; /* fixed point */ - - DUK_ASSERT(heap != NULL); -#if defined(DUK_USE_STRTAB_PTRCOMP) - DUK_ASSERT(heap->strtable16 != NULL); -#else - DUK_ASSERT(heap->strtable != NULL); -#endif - - DUK_STATS_INC(heap, stats_strtab_resize_check); - - /* Prevent recursive resizing. */ - if (DUK_UNLIKELY(heap->st_resizing != 0U)) { - DUK_D(DUK_DPRINT("prevent recursive strtable resize")); - return; - } - - heap->st_resizing = 1; - - DUK_ASSERT(heap->st_size >= 16U); - DUK_ASSERT((heap->st_size >> 4U) >= 1); - load_factor = heap->st_count / (heap->st_size >> 4U); - - DUK_DD(DUK_DDPRINT("resize check string table: size=%lu, count=%lu, load_factor=%lu (fixed point .4; float %lf)", - (unsigned long) heap->st_size, - (unsigned long) heap->st_count, - (unsigned long) load_factor, - (double) heap->st_count / (double) heap->st_size)); - - if (load_factor >= DUK_USE_STRTAB_GROW_LIMIT) { - if (heap->st_size >= DUK_USE_STRTAB_MAXSIZE) { - DUK_DD(DUK_DDPRINT("want to grow strtable (based on load factor) but already maximum size")); - } else { - DUK_D(DUK_DPRINT("grow string table: %lu -> %lu", - (unsigned long) heap->st_size, - (unsigned long) heap->st_size * 2)); -#if defined(DUK_USE_DEBUG) - duk_heap_strtable_dump(heap); -#endif - duk__strtable_grow_inplace(heap); - } - } else if (load_factor <= DUK_USE_STRTAB_SHRINK_LIMIT) { - if (heap->st_size <= DUK_USE_STRTAB_MINSIZE) { - DUK_DD(DUK_DDPRINT("want to shrink strtable (based on load factor) but already minimum size")); - } else { - DUK_D(DUK_DPRINT("shrink string table: %lu -> %lu", - (unsigned long) heap->st_size, - (unsigned long) heap->st_size / 2)); -#if defined(DUK_USE_DEBUG) - duk_heap_strtable_dump(heap); -#endif - duk__strtable_shrink_inplace(heap); - } - } else { - DUK_DD(DUK_DDPRINT("no need for strtable resize")); - } - - heap->st_resizing = 0; -} -#endif /* DUK__STRTAB_RESIZE_CHECK */ - -/* - * Torture grow/shrink: unconditionally grow and shrink back. - */ - -#if defined(DUK_USE_STRTAB_TORTURE) && defined(DUK__STRTAB_RESIZE_CHECK) -DUK_LOCAL void duk__strtable_resize_torture(duk_heap *heap) { - duk_uint32_t old_st_size; - - DUK_ASSERT(heap != NULL); - - old_st_size = heap->st_size; - if (old_st_size >= DUK_USE_STRTAB_MAXSIZE) { - return; - } - - heap->st_resizing = 1; - duk__strtable_grow_inplace(heap); - if (heap->st_size > old_st_size) { - duk__strtable_shrink_inplace(heap); - } - heap->st_resizing = 0; -} -#endif /* DUK_USE_STRTAB_TORTURE && DUK__STRTAB_RESIZE_CHECK */ - -/* - * Raw intern; string already checked not to be present. - */ - -DUK_LOCAL duk_hstring *duk__strtable_do_intern(duk_heap *heap, const duk_uint8_t *str, duk_uint32_t blen, duk_uint32_t strhash) { - duk_hstring *res; - const duk_uint8_t *extdata; -#if defined(DUK_USE_STRTAB_PTRCOMP) - duk_uint16_t *slot; -#else - duk_hstring **slot; -#endif - - DUK_DDD(DUK_DDDPRINT("do_intern: heap=%p, str=%p, blen=%lu, strhash=%lx, st_size=%lu, st_count=%lu, load=%lf", - (void *) heap, - (const void *) str, - (unsigned long) blen, - (unsigned long) strhash, - (unsigned long) heap->st_size, - (unsigned long) heap->st_count, - (double) heap->st_count / (double) heap->st_size)); - - DUK_ASSERT(heap != NULL); - - /* Prevent any side effects on the string table and the caller provided - * str/blen arguments while interning is in progress. For example, if - * the caller provided str/blen from a dynamic buffer, a finalizer - * might resize or modify that dynamic buffer, invalidating the call - * arguments. - * - * While finalizers must be prevented, mark-and-sweep itself is fine. - * Recursive string table resize is prevented explicitly here. - */ - - heap->pf_prevent_count++; - DUK_ASSERT(heap->pf_prevent_count != 0); /* Wrap. */ - -#if defined(DUK_USE_STRTAB_TORTURE) && defined(DUK__STRTAB_RESIZE_CHECK) - duk__strtable_resize_torture(heap); -#endif - - /* String table grow/shrink check. Because of chaining (and no - * accumulation issues as with hash probe chains and DELETED - * markers) there's never a mandatory need to resize right now. - * Check for the resize only periodically, based on st_count - * bit pattern. Because string table removal doesn't do a shrink - * check, we do that also here. - * - * Do the resize and possible grow/shrink before the new duk_hstring - * has been allocated. Otherwise we may trigger a GC when the result - * duk_hstring is not yet strongly referenced. - */ - -#if defined(DUK__STRTAB_RESIZE_CHECK) - if (DUK_UNLIKELY((heap->st_count & DUK_USE_STRTAB_RESIZE_CHECK_MASK) == 0)) { - duk__strtable_resize_check(heap); - } -#endif - - /* External string check (low memory optimization). */ - -#if defined(DUK_USE_HSTRING_EXTDATA) && defined(DUK_USE_EXTSTR_INTERN_CHECK) - extdata = - (const duk_uint8_t *) DUK_USE_EXTSTR_INTERN_CHECK(heap->heap_udata, (void *) DUK_LOSE_CONST(str), (duk_size_t) blen); -#else - extdata = (const duk_uint8_t *) NULL; -#endif - - /* Allocate and initialize string, not yet linked. This may cause a - * GC which may cause other strings to be interned and inserted into - * the string table before we insert our string. Finalizer execution - * is disabled intentionally to avoid a finalizer from e.g. resizing - * a buffer used as a data area for 'str'. - */ - - res = duk__strtable_alloc_hstring(heap, str, blen, strhash, extdata); - - /* Allow side effects again: GC must be avoided until duk_hstring - * result (if successful) has been INCREF'd. - */ - DUK_ASSERT(heap->pf_prevent_count > 0); - heap->pf_prevent_count--; - - /* Alloc error handling. */ - - if (DUK_UNLIKELY(res == NULL)) { -#if defined(DUK_USE_HSTRING_EXTDATA) && defined(DUK_USE_EXTSTR_INTERN_CHECK) - if (extdata != NULL) { - DUK_USE_EXTSTR_FREE(heap->heap_udata, (const void *) extdata); - } -#endif - return NULL; - } - - /* Insert into string table. */ - -#if defined(DUK_USE_STRTAB_PTRCOMP) - slot = heap->strtable16 + (strhash & heap->st_mask); -#else - slot = heap->strtable + (strhash & heap->st_mask); -#endif - DUK_ASSERT(res->hdr.h_next == NULL); /* This is the case now, but unnecessary zeroing/NULLing. */ - res->hdr.h_next = DUK__HEAPPTR_DEC16(heap, *slot); - *slot = DUK__HEAPPTR_ENC16(heap, res); - - /* Update string count only for successful inserts. */ - -#if defined(DUK__STRTAB_RESIZE_CHECK) - heap->st_count++; -#endif - - /* The duk_hstring is in the string table but is not yet strongly - * reachable. Calling code MUST NOT make any allocations or other - * side effects before the duk_hstring has been INCREF'd and made - * reachable. - */ - - return res; -} - -/* - * Intern a string from str/blen, returning either an existing duk_hstring - * or adding a new one into the string table. The input string does -not- - * need to be NUL terminated. - * - * The input 'str' argument may point to a Duktape managed data area such as - * the data area of a dynamic buffer. It's crucial to avoid any side effects - * that might affect the data area (e.g. resize the dynamic buffer, or write - * to the buffer) before the string is fully interned. - */ - -#if defined(DUK_USE_ROM_STRINGS) -DUK_LOCAL duk_hstring *duk__strtab_romstring_lookup(duk_heap *heap, const duk_uint8_t *str, duk_size_t blen, duk_uint32_t strhash) { - duk_size_t lookup_hash; - duk_hstring *curr; - - DUK_ASSERT(heap != NULL); - DUK_UNREF(heap); - - lookup_hash = (blen << 4); - if (blen > 0) { - lookup_hash += str[0]; - } - lookup_hash &= 0xff; - - curr = (duk_hstring *) DUK_LOSE_CONST(duk_rom_strings_lookup[lookup_hash]); - while (curr != NULL) { - /* Unsafe memcmp() because for zero blen, str may be NULL. */ - if (strhash == DUK_HSTRING_GET_HASH(curr) && blen == DUK_HSTRING_GET_BYTELEN(curr) && - duk_memcmp_unsafe((const void *) str, (const void *) DUK_HSTRING_GET_DATA(curr), blen) == 0) { - DUK_DDD(DUK_DDDPRINT("intern check: rom string: %!O, computed hash 0x%08lx, rom hash 0x%08lx", - curr, - (unsigned long) strhash, - (unsigned long) DUK_HSTRING_GET_HASH(curr))); - return curr; - } - curr = curr->hdr.h_next; - } - - return NULL; -} -#endif /* DUK_USE_ROM_STRINGS */ - -DUK_INTERNAL duk_hstring *duk_heap_strtable_intern(duk_heap *heap, const duk_uint8_t *str, duk_uint32_t blen) { - duk_uint32_t strhash; - duk_hstring *h; - - DUK_DDD(DUK_DDDPRINT("intern check: heap=%p, str=%p, blen=%lu", (void *) heap, (const void *) str, (unsigned long) blen)); - - /* Preliminaries. */ - - /* XXX: maybe just require 'str != NULL' even for zero size? */ - DUK_ASSERT(heap != NULL); - DUK_ASSERT(blen == 0 || str != NULL); - DUK_ASSERT(blen <= DUK_HSTRING_MAX_BYTELEN); /* Caller is responsible for ensuring this. */ - strhash = duk_heap_hashstring(heap, str, (duk_size_t) blen); - - /* String table lookup. */ - - DUK_ASSERT(DUK__GET_STRTABLE(heap) != NULL); - DUK_ASSERT(heap->st_size > 0); - DUK_ASSERT(heap->st_size == heap->st_mask + 1); -#if defined(DUK_USE_STRTAB_PTRCOMP) - h = DUK__HEAPPTR_DEC16(heap, heap->strtable16[strhash & heap->st_mask]); -#else - h = heap->strtable[strhash & heap->st_mask]; -#endif - while (h != NULL) { - if (DUK_HSTRING_GET_HASH(h) == strhash && DUK_HSTRING_GET_BYTELEN(h) == blen && - duk_memcmp_unsafe((const void *) str, (const void *) DUK_HSTRING_GET_DATA(h), (size_t) blen) == 0) { - /* Found existing entry. */ - DUK_STATS_INC(heap, stats_strtab_intern_hit); - return h; - } - h = h->hdr.h_next; - } - - /* ROM table lookup. Because this lookup is slower, do it only after - * RAM lookup. This works because no ROM string is ever interned into - * the RAM string table. - */ - -#if defined(DUK_USE_ROM_STRINGS) - h = duk__strtab_romstring_lookup(heap, str, blen, strhash); - if (h != NULL) { - DUK_STATS_INC(heap, stats_strtab_intern_hit); - return h; - } -#endif - - /* Not found in string table; insert. */ - - DUK_STATS_INC(heap, stats_strtab_intern_miss); - h = duk__strtable_do_intern(heap, str, blen, strhash); - return h; /* may be NULL */ -} - -/* - * Intern a string from u32. - */ - -/* XXX: Could arrange some special handling because we know that the result - * will have an arridx flag and an ASCII flag, won't need a clen check, etc. - */ - -DUK_INTERNAL duk_hstring *duk_heap_strtable_intern_u32(duk_heap *heap, duk_uint32_t val) { - duk_uint8_t buf[DUK__STRTAB_U32_MAX_STRLEN]; - duk_uint8_t *p; - - DUK_ASSERT(heap != NULL); - - /* This is smaller and faster than a %lu sprintf. */ - p = buf + sizeof(buf); - do { - p--; - *p = duk_lc_digits[val % 10]; - val = val / 10; - } while (val != 0); /* For val == 0, emit exactly one '0'. */ - DUK_ASSERT(p >= buf); - - return duk_heap_strtable_intern(heap, (const duk_uint8_t *) p, (duk_uint32_t) ((buf + sizeof(buf)) - p)); -} - -/* - * Checked convenience variants. - * - * XXX: Because the main use case is for the checked variants, make them the - * main functionality and provide a safe variant separately (it is only needed - * during heap init). The problem with that is that longjmp state and error - * creation must already be possible to throw. - */ - -DUK_INTERNAL duk_hstring *duk_heap_strtable_intern_checked(duk_hthread *thr, const duk_uint8_t *str, duk_uint32_t blen) { - duk_hstring *res; - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(thr->heap != NULL); - DUK_ASSERT(blen == 0 || str != NULL); - - res = duk_heap_strtable_intern(thr->heap, str, blen); - if (DUK_UNLIKELY(res == NULL)) { - DUK_ERROR_ALLOC_FAILED(thr); - DUK_WO_NORETURN(return NULL;); - } - return res; -} - -#if defined(DUK_USE_LITCACHE_SIZE) -DUK_LOCAL duk_uint_t duk__strtable_litcache_key(const duk_uint8_t *str, duk_uint32_t blen) { - duk_uintptr_t key; - - DUK_ASSERT(DUK_USE_LITCACHE_SIZE > 0); - DUK_ASSERT(DUK_IS_POWER_OF_TWO((duk_uint_t) DUK_USE_LITCACHE_SIZE)); - - key = (duk_uintptr_t) blen ^ (duk_uintptr_t) str; - key &= (duk_uintptr_t) (DUK_USE_LITCACHE_SIZE - 1); /* Assumes size is power of 2. */ - /* Due to masking, cast is in 32-bit range. */ - DUK_ASSERT(key <= DUK_UINT_MAX); - return (duk_uint_t) key; -} - -DUK_INTERNAL duk_hstring *duk_heap_strtable_intern_literal_checked(duk_hthread *thr, const duk_uint8_t *str, duk_uint32_t blen) { - duk_uint_t key; - duk_litcache_entry *ent; - duk_hstring *h; - - /* Fast path check: literal exists in literal cache. */ - key = duk__strtable_litcache_key(str, blen); - ent = thr->heap->litcache + key; - if (ent->addr == str) { - DUK_DD(DUK_DDPRINT("intern check for cached, pinned literal: str=%p, blen=%ld -> duk_hstring %!O", - (const void *) str, - (long) blen, - (duk_heaphdr *) ent->h)); - DUK_ASSERT(ent->h != NULL); - DUK_ASSERT(DUK_HSTRING_HAS_PINNED_LITERAL(ent->h)); - DUK_STATS_INC(thr->heap, stats_strtab_litcache_hit); - return ent->h; - } - - /* Intern and update (overwrite) cache entry. */ - h = duk_heap_strtable_intern_checked(thr, str, blen); - ent->addr = str; - ent->h = h; - DUK_STATS_INC(thr->heap, stats_strtab_litcache_miss); - - /* Pin the duk_hstring until the next mark-and-sweep. This means - * litcache entries don't need to be invalidated until the next - * mark-and-sweep as their target duk_hstring is not freed before - * the mark-and-sweep happens. The pin remains even if the literal - * cache entry is overwritten, and is still useful to avoid string - * table traffic. - */ - if (!DUK_HSTRING_HAS_PINNED_LITERAL(h)) { - DUK_DD(DUK_DDPRINT("pin duk_hstring because it is a literal: %!O", (duk_heaphdr *) h)); - DUK_ASSERT(!DUK_HEAPHDR_HAS_READONLY((duk_heaphdr *) h)); - DUK_HSTRING_INCREF(thr, h); - DUK_HSTRING_SET_PINNED_LITERAL(h); - DUK_STATS_INC(thr->heap, stats_strtab_litcache_pin); - } - - return h; -} -#endif /* DUK_USE_LITCACHE_SIZE */ - -DUK_INTERNAL duk_hstring *duk_heap_strtable_intern_u32_checked(duk_hthread *thr, duk_uint32_t val) { - duk_hstring *res; - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(thr->heap != NULL); - - res = duk_heap_strtable_intern_u32(thr->heap, val); - if (DUK_UNLIKELY(res == NULL)) { - DUK_ERROR_ALLOC_FAILED(thr); - DUK_WO_NORETURN(return NULL;); - } - return res; -} - -/* - * Remove (unlink) a string from the string table. - * - * Just unlinks the duk_hstring, leaving link pointers as garbage. - * Caller must free the string itself. - */ - -#if defined(DUK_USE_REFERENCE_COUNTING) -/* Unlink without a 'prev' pointer. */ -DUK_INTERNAL void duk_heap_strtable_unlink(duk_heap *heap, duk_hstring *h) { -#if defined(DUK_USE_STRTAB_PTRCOMP) - duk_uint16_t *slot; -#else - duk_hstring **slot; -#endif - duk_hstring *other; - duk_hstring *prev; - - DUK_DDD(DUK_DDDPRINT("remove: heap=%p, h=%p, blen=%lu, strhash=%lx", - (void *) heap, - (void *) h, - (unsigned long) (h != NULL ? DUK_HSTRING_GET_BYTELEN(h) : 0), - (unsigned long) (h != NULL ? DUK_HSTRING_GET_HASH(h) : 0))); - - DUK_ASSERT(heap != NULL); - DUK_ASSERT(h != NULL); - -#if defined(DUK__STRTAB_RESIZE_CHECK) - DUK_ASSERT(heap->st_count > 0); - heap->st_count--; -#endif - -#if defined(DUK_USE_STRTAB_PTRCOMP) - slot = heap->strtable16 + (DUK_HSTRING_GET_HASH(h) & heap->st_mask); -#else - slot = heap->strtable + (DUK_HSTRING_GET_HASH(h) & heap->st_mask); -#endif - other = DUK__HEAPPTR_DEC16(heap, *slot); - DUK_ASSERT(other != NULL); /* At least argument string is in the chain. */ - - prev = NULL; - while (other != h) { - prev = other; - other = other->hdr.h_next; - DUK_ASSERT(other != NULL); /* We'll eventually find 'h'. */ - } - if (prev != NULL) { - /* Middle of list. */ - prev->hdr.h_next = h->hdr.h_next; - } else { - /* Head of list. */ - *slot = DUK__HEAPPTR_ENC16(heap, h->hdr.h_next); - } - - /* There's no resize check on a string free. The next string - * intern will do one. - */ -} -#endif /* DUK_USE_REFERENCE_COUNTING */ - -/* Unlink with a 'prev' pointer. */ -DUK_INTERNAL void duk_heap_strtable_unlink_prev(duk_heap *heap, duk_hstring *h, duk_hstring *prev) { -#if defined(DUK_USE_STRTAB_PTRCOMP) - duk_uint16_t *slot; -#else - duk_hstring **slot; -#endif - - DUK_DDD(DUK_DDDPRINT("remove: heap=%p, prev=%p, h=%p, blen=%lu, strhash=%lx", - (void *) heap, - (void *) prev, - (void *) h, - (unsigned long) (h != NULL ? DUK_HSTRING_GET_BYTELEN(h) : 0), - (unsigned long) (h != NULL ? DUK_HSTRING_GET_HASH(h) : 0))); - - DUK_ASSERT(heap != NULL); - DUK_ASSERT(h != NULL); - DUK_ASSERT(prev == NULL || prev->hdr.h_next == h); - -#if defined(DUK__STRTAB_RESIZE_CHECK) - DUK_ASSERT(heap->st_count > 0); - heap->st_count--; -#endif - - if (prev != NULL) { - /* Middle of list. */ - prev->hdr.h_next = h->hdr.h_next; - } else { - /* Head of list. */ -#if defined(DUK_USE_STRTAB_PTRCOMP) - slot = heap->strtable16 + (DUK_HSTRING_GET_HASH(h) & heap->st_mask); -#else - slot = heap->strtable + (DUK_HSTRING_GET_HASH(h) & heap->st_mask); -#endif - DUK_ASSERT(DUK__HEAPPTR_DEC16(heap, *slot) == h); - *slot = DUK__HEAPPTR_ENC16(heap, h->hdr.h_next); - } -} - -/* - * Force string table resize check in mark-and-sweep. - */ - -DUK_INTERNAL void duk_heap_strtable_force_resize(duk_heap *heap) { - /* Does only one grow/shrink step if needed. The heap->st_resizing - * flag protects against recursive resizing. - */ - - DUK_ASSERT(heap != NULL); - DUK_UNREF(heap); - -#if defined(DUK__STRTAB_RESIZE_CHECK) -#if defined(DUK_USE_STRTAB_PTRCOMP) - if (heap->strtable16 != NULL) { -#else - if (heap->strtable != NULL) { -#endif - duk__strtable_resize_check(heap); - } -#endif -} - -/* - * Free strings in the string table and the string table itself. - */ - -DUK_INTERNAL void duk_heap_strtable_free(duk_heap *heap) { -#if defined(DUK_USE_STRTAB_PTRCOMP) - duk_uint16_t *strtable; - duk_uint16_t *st; -#else - duk_hstring **strtable; - duk_hstring **st; -#endif - duk_hstring *h; - - DUK_ASSERT(heap != NULL); - -#if defined(DUK_USE_ASSERTIONS) - duk__strtable_assert_checks(heap); -#endif - - /* Strtable can be NULL if heap init fails. However, in that case - * heap->st_size is 0, so strtable == strtable_end and we skip the - * loop without a special check. - */ - strtable = DUK__GET_STRTABLE(heap); - st = strtable + heap->st_size; - DUK_ASSERT(strtable != NULL || heap->st_size == 0); - - while (strtable != st) { - --st; - h = DUK__HEAPPTR_DEC16(heap, *st); - while (h) { - duk_hstring *h_next; - h_next = h->hdr.h_next; - - /* Strings may have inner refs (extdata) in some cases. */ - duk_free_hstring(heap, h); - - h = h_next; - } - } - - DUK_FREE(heap, strtable); -} - -/* automatic undefs */ -#undef DUK__GET_STRTABLE -#undef DUK__HEAPPTR_DEC16 -#undef DUK__HEAPPTR_ENC16 -#undef DUK__STRTAB_U32_MAX_STRLEN -#line 1 "duk_heaphdr_assert.c" -/* - * duk_heaphdr assertion helpers - */ - -/* #include duk_internal.h -> already included */ - -#if defined(DUK_USE_ASSERTIONS) - -#if defined(DUK_USE_DOUBLE_LINKED_HEAP) -DUK_INTERNAL void duk_heaphdr_assert_links(duk_heap *heap, duk_heaphdr *h) { - DUK_UNREF(heap); - if (h != NULL) { - duk_heaphdr *h_prev, *h_next; - h_prev = DUK_HEAPHDR_GET_PREV(heap, h); - h_next = DUK_HEAPHDR_GET_NEXT(heap, h); - DUK_ASSERT(h_prev == NULL || (DUK_HEAPHDR_GET_NEXT(heap, h_prev) == h)); - DUK_ASSERT(h_next == NULL || (DUK_HEAPHDR_GET_PREV(heap, h_next) == h)); - } -} -#else -DUK_INTERNAL void duk_heaphdr_assert_links(duk_heap *heap, duk_heaphdr *h) { - DUK_UNREF(heap); - DUK_UNREF(h); -} -#endif - -DUK_INTERNAL void duk_heaphdr_assert_valid(duk_heaphdr *h) { - DUK_ASSERT(h != NULL); - DUK_ASSERT(DUK_HEAPHDR_HTYPE_VALID(h)); -} - -/* Assert validity of a heaphdr, including all subclasses. */ -DUK_INTERNAL void duk_heaphdr_assert_valid_subclassed(duk_heaphdr *h) { - switch (DUK_HEAPHDR_GET_TYPE(h)) { - case DUK_HTYPE_OBJECT: { - duk_hobject *h_obj = (duk_hobject *) h; - DUK_HOBJECT_ASSERT_VALID(h_obj); - if (DUK_HOBJECT_IS_COMPFUNC(h_obj)) { - DUK_HCOMPFUNC_ASSERT_VALID((duk_hcompfunc *) h_obj); - } else if (DUK_HOBJECT_IS_NATFUNC(h_obj)) { - DUK_HNATFUNC_ASSERT_VALID((duk_hnatfunc *) h_obj); - } else if (DUK_HOBJECT_IS_DECENV(h_obj)) { - DUK_HDECENV_ASSERT_VALID((duk_hdecenv *) h_obj); - } else if (DUK_HOBJECT_IS_OBJENV(h_obj)) { - DUK_HOBJENV_ASSERT_VALID((duk_hobjenv *) h_obj); - } else if (DUK_HOBJECT_IS_BUFOBJ(h_obj)) { -#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) - DUK_HBUFOBJ_ASSERT_VALID((duk_hbufobj *) h_obj); -#endif - } else if (DUK_HOBJECT_IS_BOUNDFUNC(h_obj)) { - DUK_HBOUNDFUNC_ASSERT_VALID((duk_hboundfunc *) h_obj); - } else if (DUK_HOBJECT_IS_PROXY(h_obj)) { - DUK_HPROXY_ASSERT_VALID((duk_hproxy *) h_obj); - } else if (DUK_HOBJECT_IS_THREAD(h_obj)) { - DUK_HTHREAD_ASSERT_VALID((duk_hthread *) h_obj); - } else { - /* Just a plain object. */ - ; - } - break; - } - case DUK_HTYPE_STRING: { - duk_hstring *h_str = (duk_hstring *) h; - DUK_HSTRING_ASSERT_VALID(h_str); - break; - } - case DUK_HTYPE_BUFFER: { - duk_hbuffer *h_buf = (duk_hbuffer *) h; - DUK_HBUFFER_ASSERT_VALID(h_buf); - break; - } - default: { - DUK_ASSERT(0); - } - } -} - -#endif /* DUK_USE_ASSERTIONS */ -#line 1 "duk_hobject_alloc.c" -/* - * Hobject allocation. - * - * Provides primitive allocation functions for all object types (plain object, - * compiled function, native function, thread). The object return is not yet - * in "heap allocated" list and has a refcount of zero, so caller must careful. - */ - -/* XXX: In most cases there's no need for plain allocation without pushing - * to the value stack. Maybe rework contract? - */ - -/* #include duk_internal.h -> already included */ - -/* - * Helpers. - */ - -DUK_LOCAL void duk__init_object_parts(duk_heap *heap, duk_uint_t hobject_flags, duk_hobject *obj) { - DUK_ASSERT(obj != NULL); - /* Zeroed by caller. */ - - obj->hdr.h_flags = hobject_flags | DUK_HTYPE_OBJECT; - DUK_ASSERT(DUK_HEAPHDR_GET_TYPE(&obj->hdr) == DUK_HTYPE_OBJECT); /* Assume zero shift. */ - -#if defined(DUK_USE_EXPLICIT_NULL_INIT) - DUK_HOBJECT_SET_PROTOTYPE(heap, obj, NULL); - DUK_HOBJECT_SET_PROPS(heap, obj, NULL); -#endif -#if defined(DUK_USE_HEAPPTR16) - /* Zero encoded pointer is required to match NULL. */ - DUK_HEAPHDR_SET_NEXT(heap, &obj->hdr, NULL); -#if defined(DUK_USE_DOUBLE_LINKED_HEAP) - DUK_HEAPHDR_SET_PREV(heap, &obj->hdr, NULL); -#endif -#endif - DUK_HEAPHDR_ASSERT_LINKS(heap, &obj->hdr); - DUK_HEAP_INSERT_INTO_HEAP_ALLOCATED(heap, &obj->hdr); - - /* obj->props is intentionally left as NULL, and duk_hobject_props.c must deal - * with this properly. This is intentional: empty objects consume a minimum - * amount of memory. Further, an initial allocation might fail and cause - * 'obj' to "leak" (require a mark-and-sweep) since it is not reachable yet. - */ -} - -DUK_LOCAL void *duk__hobject_alloc_init(duk_hthread *thr, duk_uint_t hobject_flags, duk_size_t size) { - void *res; - - res = (void *) DUK_ALLOC_CHECKED_ZEROED(thr, size); - DUK_ASSERT(res != NULL); - duk__init_object_parts(thr->heap, hobject_flags, (duk_hobject *) res); - return res; -} - -/* - * Allocate an duk_hobject. - * - * The allocated object has no allocation for properties; the caller may - * want to force a resize if a desired size is known. - * - * The allocated object has zero reference count and is not reachable. - * The caller MUST make the object reachable and increase its reference - * count before invoking any operation that might require memory allocation. - */ - -DUK_INTERNAL duk_hobject *duk_hobject_alloc_unchecked(duk_heap *heap, duk_uint_t hobject_flags) { - duk_hobject *res; - - DUK_ASSERT(heap != NULL); - - /* different memory layout, alloc size, and init */ - DUK_ASSERT((hobject_flags & DUK_HOBJECT_FLAG_COMPFUNC) == 0); - DUK_ASSERT((hobject_flags & DUK_HOBJECT_FLAG_NATFUNC) == 0); - DUK_ASSERT((hobject_flags & DUK_HOBJECT_FLAG_BOUNDFUNC) == 0); - - res = (duk_hobject *) DUK_ALLOC_ZEROED(heap, sizeof(duk_hobject)); - if (DUK_UNLIKELY(res == NULL)) { - return NULL; - } - DUK_ASSERT(!DUK_HOBJECT_IS_THREAD(res)); - - duk__init_object_parts(heap, hobject_flags, res); - - DUK_ASSERT(!DUK_HOBJECT_IS_THREAD(res)); - return res; -} - -DUK_INTERNAL duk_hobject *duk_hobject_alloc(duk_hthread *thr, duk_uint_t hobject_flags) { - duk_hobject *res; - - res = (duk_hobject *) duk__hobject_alloc_init(thr, hobject_flags, sizeof(duk_hobject)); - return res; -} - -DUK_INTERNAL duk_hcompfunc *duk_hcompfunc_alloc(duk_hthread *thr, duk_uint_t hobject_flags) { - duk_hcompfunc *res; - - res = (duk_hcompfunc *) duk__hobject_alloc_init(thr, hobject_flags, sizeof(duk_hcompfunc)); -#if defined(DUK_USE_EXPLICIT_NULL_INIT) -#if defined(DUK_USE_HEAPPTR16) - /* NULL pointer is required to encode to zero, so memset is enough. */ -#else - res->data = NULL; - res->funcs = NULL; - res->bytecode = NULL; -#endif - res->lex_env = NULL; - res->var_env = NULL; -#endif - - return res; -} - -DUK_INTERNAL duk_hnatfunc *duk_hnatfunc_alloc(duk_hthread *thr, duk_uint_t hobject_flags) { - duk_hnatfunc *res; - - res = (duk_hnatfunc *) duk__hobject_alloc_init(thr, hobject_flags, sizeof(duk_hnatfunc)); -#if defined(DUK_USE_EXPLICIT_NULL_INIT) - res->func = NULL; -#endif - - return res; -} - -DUK_INTERNAL duk_hboundfunc *duk_hboundfunc_alloc(duk_heap *heap, duk_uint_t hobject_flags) { - duk_hboundfunc *res; - - res = (duk_hboundfunc *) DUK_ALLOC(heap, sizeof(duk_hboundfunc)); - if (!res) { - return NULL; - } - duk_memzero(res, sizeof(duk_hboundfunc)); - - duk__init_object_parts(heap, hobject_flags, &res->obj); - - DUK_TVAL_SET_UNDEFINED(&res->target); - DUK_TVAL_SET_UNDEFINED(&res->this_binding); - -#if defined(DUK_USE_EXPLICIT_NULL_INIT) - res->args = NULL; -#endif - - return res; -} - -#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) -DUK_INTERNAL duk_hbufobj *duk_hbufobj_alloc(duk_hthread *thr, duk_uint_t hobject_flags) { - duk_hbufobj *res; - - res = (duk_hbufobj *) duk__hobject_alloc_init(thr, hobject_flags, sizeof(duk_hbufobj)); -#if defined(DUK_USE_EXPLICIT_NULL_INIT) - res->buf = NULL; - res->buf_prop = NULL; -#endif - - DUK_HBUFOBJ_ASSERT_VALID(res); - return res; -} -#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ - -/* Allocate a new thread. - * - * Leaves the built-ins array uninitialized. The caller must either - * initialize a new global context or share existing built-ins from - * another thread. - */ -DUK_INTERNAL duk_hthread *duk_hthread_alloc_unchecked(duk_heap *heap, duk_uint_t hobject_flags) { - duk_hthread *res; - - res = (duk_hthread *) DUK_ALLOC(heap, sizeof(duk_hthread)); - if (DUK_UNLIKELY(res == NULL)) { - return NULL; - } - duk_memzero(res, sizeof(duk_hthread)); - - duk__init_object_parts(heap, hobject_flags, &res->obj); - -#if defined(DUK_USE_EXPLICIT_NULL_INIT) - res->ptr_curr_pc = NULL; - res->heap = NULL; - res->valstack = NULL; - res->valstack_end = NULL; - res->valstack_alloc_end = NULL; - res->valstack_bottom = NULL; - res->valstack_top = NULL; - res->callstack_curr = NULL; - res->resumer = NULL; - res->compile_ctx = NULL, -#if defined(DUK_USE_HEAPPTR16) - res->strs16 = NULL; -#else - res->strs = NULL; -#endif - { - duk_small_uint_t i; - for (i = 0; i < DUK_NUM_BUILTINS; i++) { - res->builtins[i] = NULL; - } - } -#endif - /* When nothing is running, API calls are in non-strict mode. */ - DUK_ASSERT(res->strict == 0); - - res->heap = heap; - - /* XXX: Any reason not to merge duk_hthread_alloc.c here? */ - return res; -} - -DUK_INTERNAL duk_hthread *duk_hthread_alloc(duk_hthread *thr, duk_uint_t hobject_flags) { - duk_hthread *res; - - res = duk_hthread_alloc_unchecked(thr->heap, hobject_flags); - if (res == NULL) { - DUK_ERROR_ALLOC_FAILED(thr); - DUK_WO_NORETURN(return NULL;); - } - return res; -} - -DUK_INTERNAL duk_harray *duk_harray_alloc(duk_hthread *thr, duk_uint_t hobject_flags) { - duk_harray *res; - - res = (duk_harray *) duk__hobject_alloc_init(thr, hobject_flags, sizeof(duk_harray)); - - DUK_ASSERT(res->length == 0); - - return res; -} - -DUK_INTERNAL duk_hdecenv *duk_hdecenv_alloc(duk_hthread *thr, duk_uint_t hobject_flags) { - duk_hdecenv *res; - - res = (duk_hdecenv *) duk__hobject_alloc_init(thr, hobject_flags, sizeof(duk_hdecenv)); -#if defined(DUK_USE_EXPLICIT_NULL_INIT) - res->thread = NULL; - res->varmap = NULL; -#endif - - DUK_ASSERT(res->thread == NULL); - DUK_ASSERT(res->varmap == NULL); - DUK_ASSERT(res->regbase_byteoff == 0); - - return res; -} - -DUK_INTERNAL duk_hobjenv *duk_hobjenv_alloc(duk_hthread *thr, duk_uint_t hobject_flags) { - duk_hobjenv *res; - - res = (duk_hobjenv *) duk__hobject_alloc_init(thr, hobject_flags, sizeof(duk_hobjenv)); -#if defined(DUK_USE_EXPLICIT_NULL_INIT) - res->target = NULL; -#endif - - DUK_ASSERT(res->target == NULL); - - return res; -} - -DUK_INTERNAL duk_hproxy *duk_hproxy_alloc(duk_hthread *thr, duk_uint_t hobject_flags) { - duk_hproxy *res; - - res = (duk_hproxy *) duk__hobject_alloc_init(thr, hobject_flags, sizeof(duk_hproxy)); - - /* Leave ->target and ->handler uninitialized, as caller will always - * explicitly initialize them before any side effects are possible. - */ - - return res; -} -#line 1 "duk_hobject_assert.c" -/* - * duk_hobject and subclass assertion helpers - */ - -/* #include duk_internal.h -> already included */ - -#if defined(DUK_USE_ASSERTIONS) - -DUK_INTERNAL void duk_hobject_assert_valid(duk_hobject *h) { - DUK_ASSERT(h != NULL); - DUK_ASSERT(!DUK_HOBJECT_IS_CALLABLE(h) || DUK_HOBJECT_GET_CLASS_NUMBER(h) == DUK_HOBJECT_CLASS_FUNCTION); - DUK_ASSERT(!DUK_HOBJECT_IS_BUFOBJ(h) || (DUK_HOBJECT_GET_CLASS_NUMBER(h) == DUK_HOBJECT_CLASS_ARRAYBUFFER || - DUK_HOBJECT_GET_CLASS_NUMBER(h) == DUK_HOBJECT_CLASS_DATAVIEW || - DUK_HOBJECT_GET_CLASS_NUMBER(h) == DUK_HOBJECT_CLASS_INT8ARRAY || - DUK_HOBJECT_GET_CLASS_NUMBER(h) == DUK_HOBJECT_CLASS_UINT8ARRAY || - DUK_HOBJECT_GET_CLASS_NUMBER(h) == DUK_HOBJECT_CLASS_UINT8CLAMPEDARRAY || - DUK_HOBJECT_GET_CLASS_NUMBER(h) == DUK_HOBJECT_CLASS_INT16ARRAY || - DUK_HOBJECT_GET_CLASS_NUMBER(h) == DUK_HOBJECT_CLASS_UINT16ARRAY || - DUK_HOBJECT_GET_CLASS_NUMBER(h) == DUK_HOBJECT_CLASS_INT32ARRAY || - DUK_HOBJECT_GET_CLASS_NUMBER(h) == DUK_HOBJECT_CLASS_UINT32ARRAY || - DUK_HOBJECT_GET_CLASS_NUMBER(h) == DUK_HOBJECT_CLASS_FLOAT32ARRAY || - DUK_HOBJECT_GET_CLASS_NUMBER(h) == DUK_HOBJECT_CLASS_FLOAT64ARRAY)); - /* Object is an Array <=> object has exotic array behavior */ - DUK_ASSERT((DUK_HOBJECT_GET_CLASS_NUMBER(h) == DUK_HOBJECT_CLASS_ARRAY && DUK_HOBJECT_HAS_EXOTIC_ARRAY(h)) || - (DUK_HOBJECT_GET_CLASS_NUMBER(h) != DUK_HOBJECT_CLASS_ARRAY && !DUK_HOBJECT_HAS_EXOTIC_ARRAY(h))); -} - -DUK_INTERNAL void duk_harray_assert_valid(duk_harray *h) { - DUK_ASSERT(h != NULL); - DUK_ASSERT(DUK_HOBJECT_IS_ARRAY((duk_hobject *) h)); - DUK_ASSERT(DUK_HOBJECT_HAS_EXOTIC_ARRAY((duk_hobject *) h)); -} - -DUK_INTERNAL void duk_hboundfunc_assert_valid(duk_hboundfunc *h) { - DUK_ASSERT(h != NULL); - DUK_ASSERT(DUK_HOBJECT_IS_BOUNDFUNC((duk_hobject *) h)); - DUK_ASSERT(DUK_TVAL_IS_LIGHTFUNC(&h->target) || - (DUK_TVAL_IS_OBJECT(&h->target) && DUK_HOBJECT_IS_CALLABLE(DUK_TVAL_GET_OBJECT(&h->target)))); - DUK_ASSERT(!DUK_TVAL_IS_UNUSED(&h->this_binding)); - DUK_ASSERT(h->nargs == 0 || h->args != NULL); -} - -#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) -DUK_INTERNAL void duk_hbufobj_assert_valid(duk_hbufobj *h) { - DUK_ASSERT(h != NULL); - DUK_ASSERT(h->shift <= 3); - DUK_ASSERT(h->elem_type <= DUK_HBUFOBJ_ELEM_MAX); - DUK_ASSERT((h->shift == 0 && h->elem_type == DUK_HBUFOBJ_ELEM_UINT8) || - (h->shift == 0 && h->elem_type == DUK_HBUFOBJ_ELEM_UINT8CLAMPED) || - (h->shift == 0 && h->elem_type == DUK_HBUFOBJ_ELEM_INT8) || - (h->shift == 1 && h->elem_type == DUK_HBUFOBJ_ELEM_UINT16) || - (h->shift == 1 && h->elem_type == DUK_HBUFOBJ_ELEM_INT16) || - (h->shift == 2 && h->elem_type == DUK_HBUFOBJ_ELEM_UINT32) || - (h->shift == 2 && h->elem_type == DUK_HBUFOBJ_ELEM_INT32) || - (h->shift == 2 && h->elem_type == DUK_HBUFOBJ_ELEM_FLOAT32) || - (h->shift == 3 && h->elem_type == DUK_HBUFOBJ_ELEM_FLOAT64)); - DUK_ASSERT(h->is_typedarray == 0 || h->is_typedarray == 1); - DUK_ASSERT(DUK_HOBJECT_IS_BUFOBJ((duk_hobject *) h)); - if (h->buf == NULL) { - DUK_ASSERT(h->offset == 0); - DUK_ASSERT(h->length == 0); - } else { - /* No assertions for offset or length; in particular, - * it's OK for length to be longer than underlying - * buffer. Just ensure they don't wrap when added. - */ - DUK_ASSERT(h->offset + h->length >= h->offset); - } -} -#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ - -DUK_INTERNAL void duk_hcompfunc_assert_valid(duk_hcompfunc *h) { - DUK_ASSERT(h != NULL); -} - -DUK_INTERNAL void duk_hnatfunc_assert_valid(duk_hnatfunc *h) { - DUK_ASSERT(h != NULL); -} - -DUK_INTERNAL void duk_hdecenv_assert_valid(duk_hdecenv *h) { - DUK_ASSERT(h != NULL); - DUK_ASSERT(DUK_HOBJECT_IS_DECENV((duk_hobject *) h)); - DUK_ASSERT(h->thread == NULL || h->varmap != NULL); -} - -DUK_INTERNAL void duk_hobjenv_assert_valid(duk_hobjenv *h) { - DUK_ASSERT(h != NULL); - DUK_ASSERT(DUK_HOBJECT_IS_OBJENV((duk_hobject *) h)); - DUK_ASSERT(h->target != NULL); - DUK_ASSERT(h->has_this == 0 || h->has_this == 1); -} - -DUK_INTERNAL void duk_hproxy_assert_valid(duk_hproxy *h) { - DUK_ASSERT(h != NULL); - DUK_ASSERT(h->target != NULL); - DUK_ASSERT(h->handler != NULL); - DUK_ASSERT(DUK_HOBJECT_HAS_EXOTIC_PROXYOBJ((duk_hobject *) h)); -} - -DUK_INTERNAL void duk_hthread_assert_valid(duk_hthread *thr) { - DUK_ASSERT(thr != NULL); - DUK_ASSERT(DUK_HEAPHDR_GET_TYPE((duk_heaphdr *) thr) == DUK_HTYPE_OBJECT); - DUK_ASSERT(DUK_HOBJECT_IS_THREAD((duk_hobject *) thr)); - DUK_ASSERT(thr->unused1 == 0); - DUK_ASSERT(thr->unused2 == 0); -} - -DUK_INTERNAL void duk_ctx_assert_valid(duk_hthread *thr) { - DUK_ASSERT(thr != NULL); - DUK_HTHREAD_ASSERT_VALID(thr); - DUK_ASSERT(thr->valstack != NULL); - DUK_ASSERT(thr->valstack_bottom != NULL); - DUK_ASSERT(thr->valstack_top != NULL); - DUK_ASSERT(thr->valstack_end != NULL); - DUK_ASSERT(thr->valstack_alloc_end != NULL); - DUK_ASSERT(thr->valstack_alloc_end >= thr->valstack); - DUK_ASSERT(thr->valstack_end >= thr->valstack); - DUK_ASSERT(thr->valstack_top >= thr->valstack); - DUK_ASSERT(thr->valstack_top >= thr->valstack_bottom); - DUK_ASSERT(thr->valstack_end >= thr->valstack_top); - DUK_ASSERT(thr->valstack_alloc_end >= thr->valstack_end); -} - -#endif /* DUK_USE_ASSERTIONS */ -#line 1 "duk_hobject_enum.c" -/* - * Object enumeration support. - * - * Creates an internal enumeration state object to be used e.g. with for-in - * enumeration. The state object contains a snapshot of target object keys - * and internal control state for enumeration. Enumerator flags allow caller - * to e.g. request internal/non-enumerable properties, and to enumerate only - * "own" properties. - * - * Also creates the result value for e.g. Object.keys() based on the same - * internal structure. - * - * This snapshot-based enumeration approach is used to simplify enumeration: - * non-snapshot-based approaches are difficult to reconcile with mutating - * the enumeration target, running multiple long-lived enumerators at the - * same time, garbage collection details, etc. The downside is that the - * enumerator object is memory inefficient especially for iterating arrays. - */ - -/* #include duk_internal.h -> already included */ - -/* XXX: identify enumeration target with an object index (not top of stack) */ - -/* First enumerated key index in enumerator object, must match exactly the - * number of control properties inserted to the enumerator. - */ -#define DUK__ENUM_START_INDEX 2 - -/* Current implementation suffices for ES2015 for now because there's no symbol - * sorting, so commented out for now. - */ - -/* - * Helper to sort enumeration keys using a callback for pairwise duk_hstring - * comparisons. The keys are in the enumeration object entry part, starting - * from DUK__ENUM_START_INDEX, and the entry part is dense. Entry part values - * are all "true", e.g. "1" -> true, "3" -> true, "foo" -> true, "2" -> true, - * so it suffices to just switch keys without switching values. - * - * ES2015 [[OwnPropertyKeys]] enumeration order for ordinary objects: - * (1) array indices in ascending order, - * (2) non-array-index keys in insertion order, and - * (3) symbols in insertion order. - * http://www.ecma-international.org/ecma-262/6.0/#sec-ordinary-object-internal-methods-and-internal-slots-ownpropertykeys. - * - * This rule is applied to "own properties" at each inheritance level; - * non-duplicate parent keys always follow child keys. For example, - * an inherited array index will enumerate -after- a symbol in the - * child. - * - * Insertion sort is used because (1) it's simple and compact, (2) works - * in-place, (3) minimizes operations if data is already nearly sorted, - * (4) doesn't reorder elements considered equal. - * http://en.wikipedia.org/wiki/Insertion_sort - */ - -/* Sort key, must hold array indices, "not array index" marker, and one more - * higher value for symbols. - */ -#if !defined(DUK_USE_SYMBOL_BUILTIN) -typedef duk_uint32_t duk__sort_key_t; -#elif defined(DUK_USE_64BIT_OPS) -typedef duk_uint64_t duk__sort_key_t; -#else -typedef duk_double_t duk__sort_key_t; -#endif - -/* Get sort key for a duk_hstring. */ -DUK_LOCAL duk__sort_key_t duk__hstring_sort_key(duk_hstring *x) { - duk__sort_key_t val; - - /* For array indices [0,0xfffffffe] use the array index as is. - * For strings, use 0xffffffff, the marker 'arridx' already in - * duk_hstring. For symbols, any value above 0xffffffff works, - * as long as it is the same for all symbols; currently just add - * the masked flag field into the arridx temporary. - */ - DUK_ASSERT(x != NULL); - DUK_ASSERT(!DUK_HSTRING_HAS_SYMBOL(x) || DUK_HSTRING_GET_ARRIDX_FAST(x) == DUK_HSTRING_NO_ARRAY_INDEX); - - val = (duk__sort_key_t) DUK_HSTRING_GET_ARRIDX_FAST(x); - -#if defined(DUK_USE_SYMBOL_BUILTIN) - val = val + (duk__sort_key_t) (DUK_HEAPHDR_GET_FLAGS_RAW((duk_heaphdr *) x) & DUK_HSTRING_FLAG_SYMBOL); -#endif - - return (duk__sort_key_t) val; -} - -/* Insert element 'b' after element 'a'? */ -DUK_LOCAL duk_bool_t duk__sort_compare_es6(duk_hstring *a, duk_hstring *b, duk__sort_key_t val_b) { - duk__sort_key_t val_a; - - DUK_ASSERT(a != NULL); - DUK_ASSERT(b != NULL); - DUK_UNREF(b); /* Not actually needed now, val_b suffices. */ - - val_a = duk__hstring_sort_key(a); - - if (val_a > val_b) { - return 0; - } else { - return 1; - } -} - -DUK_LOCAL void duk__sort_enum_keys_es6(duk_hthread *thr, duk_hobject *h_obj, duk_int_fast32_t idx_start, duk_int_fast32_t idx_end) { - duk_hstring **keys; - duk_int_fast32_t idx; - - DUK_ASSERT(h_obj != NULL); - DUK_ASSERT(idx_start >= DUK__ENUM_START_INDEX); - DUK_ASSERT(idx_end >= idx_start); - DUK_UNREF(thr); - - if (idx_end <= idx_start + 1) { - return; /* Zero or one element(s). */ - } - - keys = DUK_HOBJECT_E_GET_KEY_BASE(thr->heap, h_obj); - - for (idx = idx_start + 1; idx < idx_end; idx++) { - duk_hstring *h_curr; - duk_int_fast32_t idx_insert; - duk__sort_key_t val_curr; - - h_curr = keys[idx]; - DUK_ASSERT(h_curr != NULL); - - /* Scan backwards for insertion place. This works very well - * when the elements are nearly in order which is the common - * (and optimized for) case. - */ - - val_curr = duk__hstring_sort_key(h_curr); /* Remains same during scanning. */ - for (idx_insert = idx - 1; idx_insert >= idx_start; idx_insert--) { - duk_hstring *h_insert; - h_insert = keys[idx_insert]; - DUK_ASSERT(h_insert != NULL); - - if (duk__sort_compare_es6(h_insert, h_curr, val_curr)) { - break; - } - } - /* If we're out of indices, idx_insert == idx_start - 1 and idx_insert++ - * brings us back to idx_start. - */ - idx_insert++; - DUK_ASSERT(idx_insert >= 0 && idx_insert <= idx); - - /* .-- p_insert .-- p_curr - * v v - * | ... | insert | ... | curr - */ - - /* This could also done when the keys are in order, i.e. - * idx_insert == idx. The result would be an unnecessary - * memmove() but we use an explicit check because the keys - * are very often in order already. - */ - if (idx != idx_insert) { - duk_memmove((void *) (keys + idx_insert + 1), - (const void *) (keys + idx_insert), - ((size_t) (idx - idx_insert) * sizeof(duk_hstring *))); - keys[idx_insert] = h_curr; - } - } - - /* Entry part has been reordered now with no side effects. - * If the object has a hash part, it will now be incorrect - * and we need to rehash. Do that by forcing a resize to - * the current size. - */ - duk_hobject_resize_entrypart(thr, h_obj, DUK_HOBJECT_GET_ESIZE(h_obj)); -} - -/* - * Create an internal enumerator object E, which has its keys ordered - * to match desired enumeration ordering. Also initialize internal control - * properties for enumeration. - * - * Note: if an array was used to hold enumeration keys instead, an array - * scan would be needed to eliminate duplicates found in the prototype chain. - */ - -DUK_LOCAL void duk__add_enum_key(duk_hthread *thr, duk_hstring *k) { - /* 'k' may be unreachable on entry so must push without any - * potential for GC. - */ - duk_push_hstring(thr, k); - duk_push_true(thr); - duk_put_prop(thr, -3); -} - -DUK_LOCAL void duk__add_enum_key_stridx(duk_hthread *thr, duk_small_uint_t stridx) { - duk__add_enum_key(thr, DUK_HTHREAD_GET_STRING(thr, stridx)); -} - -DUK_INTERNAL void duk_hobject_enumerator_create(duk_hthread *thr, duk_small_uint_t enum_flags) { - duk_hobject *enum_target; - duk_hobject *curr; - duk_hobject *res; -#if defined(DUK_USE_ES6_PROXY) - duk_hobject *h_proxy_target; - duk_hobject *h_proxy_handler; - duk_hobject *h_trap_result; -#endif - duk_uint_fast32_t i, len; /* used for array, stack, and entry indices */ - duk_uint_fast32_t sort_start_index; - - DUK_ASSERT(thr != NULL); - - enum_target = duk_require_hobject(thr, -1); - DUK_ASSERT(enum_target != NULL); - - duk_push_bare_object(thr); - res = duk_known_hobject(thr, -1); - - /* [enum_target res] */ - - /* Target must be stored so that we can recheck whether or not - * keys still exist when we enumerate. This is not done if the - * enumeration result comes from a proxy trap as there is no - * real object to check against. - */ - duk_push_hobject(thr, enum_target); - duk_put_prop_stridx_short(thr, -2, DUK_STRIDX_INT_TARGET); /* Target is bare, plain put OK. */ - - /* Initialize index so that we skip internal control keys. */ - duk_push_int(thr, DUK__ENUM_START_INDEX); - duk_put_prop_stridx_short(thr, -2, DUK_STRIDX_INT_NEXT); /* Target is bare, plain put OK. */ - - /* - * Proxy object handling - */ - -#if defined(DUK_USE_ES6_PROXY) - if (DUK_LIKELY((enum_flags & DUK_ENUM_NO_PROXY_BEHAVIOR) != 0)) { - goto skip_proxy; - } - if (DUK_LIKELY(!duk_hobject_proxy_check(enum_target, &h_proxy_target, &h_proxy_handler))) { - goto skip_proxy; - } - - /* XXX: share code with Object.keys() Proxy handling */ - - /* In ES2015 for-in invoked the "enumerate" trap; in ES2016 "enumerate" - * has been obsoleted and "ownKeys" is used instead. - */ - DUK_DDD(DUK_DDDPRINT("proxy enumeration")); - duk_push_hobject(thr, h_proxy_handler); - if (!duk_get_prop_stridx_short(thr, -1, DUK_STRIDX_OWN_KEYS)) { - /* No need to replace the 'enum_target' value in stack, only the - * enum_target reference. This also ensures that the original - * enum target is reachable, which keeps the proxy and the proxy - * target reachable. We do need to replace the internal _Target. - */ - DUK_DDD(DUK_DDDPRINT("no ownKeys trap, enumerate proxy target instead")); - DUK_DDD(DUK_DDDPRINT("h_proxy_target=%!O", (duk_heaphdr *) h_proxy_target)); - enum_target = h_proxy_target; - - duk_push_hobject(thr, enum_target); /* -> [ ... enum_target res handler undefined target ] */ - duk_put_prop_stridx_short(thr, -4, DUK_STRIDX_INT_TARGET); /* Target is bare, plain put OK. */ - - duk_pop_2(thr); /* -> [ ... enum_target res ] */ - goto skip_proxy; - } - - /* [ ... enum_target res handler trap ] */ - duk_insert(thr, -2); - duk_push_hobject(thr, h_proxy_target); /* -> [ ... enum_target res trap handler target ] */ - duk_call_method(thr, 1 /*nargs*/); /* -> [ ... enum_target res trap_result ] */ - h_trap_result = duk_require_hobject(thr, -1); - DUK_UNREF(h_trap_result); - - duk_proxy_ownkeys_postprocess(thr, h_proxy_target, enum_flags); - /* -> [ ... enum_target res trap_result keys_array ] */ - - /* Copy cleaned up trap result keys into the enumerator object. */ - /* XXX: result is a dense array; could make use of that. */ - DUK_ASSERT(duk_is_array(thr, -1)); - len = (duk_uint_fast32_t) duk_get_length(thr, -1); - for (i = 0; i < len; i++) { - (void) duk_get_prop_index(thr, -1, (duk_uarridx_t) i); - DUK_ASSERT(duk_is_string(thr, -1)); /* postprocess cleaned up */ - /* [ ... enum_target res trap_result keys_array val ] */ - duk_push_true(thr); - /* [ ... enum_target res trap_result keys_array val true ] */ - duk_put_prop(thr, -5); - } - /* [ ... enum_target res trap_result keys_array ] */ - duk_pop_2(thr); - duk_remove_m2(thr); - - /* [ ... res ] */ - - /* The internal _Target property is kept pointing to the original - * enumeration target (the proxy object), so that the enumerator - * 'next' operation can read property values if so requested. The - * fact that the _Target is a proxy disables key existence check - * during enumeration. - */ - DUK_DDD(DUK_DDDPRINT("proxy enumeration, final res: %!O", (duk_heaphdr *) res)); - goto compact_and_return; - -skip_proxy: -#endif /* DUK_USE_ES6_PROXY */ - - curr = enum_target; - sort_start_index = DUK__ENUM_START_INDEX; - DUK_ASSERT(DUK_HOBJECT_GET_ENEXT(res) == DUK__ENUM_START_INDEX); - while (curr) { - duk_uint_fast32_t sort_end_index; -#if !defined(DUK_USE_PREFER_SIZE) - duk_bool_t need_sort = 0; -#endif - duk_bool_t cond; - - /* Enumeration proceeds by inheritance level. Virtual - * properties need to be handled specially, followed by - * array part, and finally entry part. - * - * If there are array index keys in the entry part or any - * other risk of the ES2015 [[OwnPropertyKeys]] order being - * violated, need_sort is set and an explicit ES2015 sort is - * done for the inheritance level. - */ - - /* XXX: inheriting from proxy */ - - /* - * Virtual properties. - * - * String and buffer indices are virtual and always enumerable, - * 'length' is virtual and non-enumerable. Array and arguments - * object props have special behavior but are concrete. - * - * String and buffer objects don't have an array part so as long - * as virtual array index keys are enumerated first, we don't - * need to set need_sort. - */ - -#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) - cond = DUK_HOBJECT_HAS_EXOTIC_STRINGOBJ(curr) || DUK_HOBJECT_IS_BUFOBJ(curr); -#else - cond = DUK_HOBJECT_HAS_EXOTIC_STRINGOBJ(curr); -#endif - cond = cond && !(enum_flags & DUK_ENUM_EXCLUDE_STRINGS); - if (cond) { - duk_bool_t have_length = 1; - - /* String and buffer enumeration behavior is identical now, - * so use shared handler. - */ - if (DUK_HOBJECT_HAS_EXOTIC_STRINGOBJ(curr)) { - duk_hstring *h_val; - h_val = duk_hobject_get_internal_value_string(thr->heap, curr); - DUK_ASSERT(h_val != NULL); /* string objects must not created without internal value */ - len = (duk_uint_fast32_t) DUK_HSTRING_GET_CHARLEN(h_val); - } -#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) - else { - duk_hbufobj *h_bufobj; - DUK_ASSERT(DUK_HOBJECT_IS_BUFOBJ(curr)); - h_bufobj = (duk_hbufobj *) curr; - - if (h_bufobj == NULL || !h_bufobj->is_typedarray) { - /* Zero length seems like a good behavior for neutered buffers. - * ArrayBuffer (non-view) and DataView don't have index properties - * or .length property. - */ - len = 0; - have_length = 0; - } else { - /* There's intentionally no check for - * current underlying buffer length. - */ - len = (duk_uint_fast32_t) (h_bufobj->length >> h_bufobj->shift); - } - } -#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ - - for (i = 0; i < len; i++) { - duk_hstring *k; - - /* This is a bit fragile: the string is not - * reachable until it is pushed by the helper. - */ - k = duk_heap_strtable_intern_u32_checked(thr, (duk_uint32_t) i); - DUK_ASSERT(k); - - duk__add_enum_key(thr, k); - - /* [enum_target res] */ - } - - /* 'length' and other virtual properties are not - * enumerable, but are included if non-enumerable - * properties are requested. - */ - - if (have_length && (enum_flags & DUK_ENUM_INCLUDE_NONENUMERABLE)) { - duk__add_enum_key_stridx(thr, DUK_STRIDX_LENGTH); - } - } - - /* - * Array part - */ - - cond = !(enum_flags & DUK_ENUM_EXCLUDE_STRINGS); - if (cond) { - for (i = 0; i < (duk_uint_fast32_t) DUK_HOBJECT_GET_ASIZE(curr); i++) { - duk_hstring *k; - duk_tval *tv; - - tv = DUK_HOBJECT_A_GET_VALUE_PTR(thr->heap, curr, i); - if (DUK_TVAL_IS_UNUSED(tv)) { - continue; - } - k = duk_heap_strtable_intern_u32_checked(thr, (duk_uint32_t) i); /* Fragile reachability. */ - DUK_ASSERT(k); - - duk__add_enum_key(thr, k); - - /* [enum_target res] */ - } - - if (DUK_HOBJECT_HAS_EXOTIC_ARRAY(curr)) { - /* Array .length comes after numeric indices. */ - if (enum_flags & DUK_ENUM_INCLUDE_NONENUMERABLE) { - duk__add_enum_key_stridx(thr, DUK_STRIDX_LENGTH); - } - } - } - - /* - * Entries part - */ - - for (i = 0; i < (duk_uint_fast32_t) DUK_HOBJECT_GET_ENEXT(curr); i++) { - duk_hstring *k; - - k = DUK_HOBJECT_E_GET_KEY(thr->heap, curr, i); - if (!k) { - continue; - } - if (!(enum_flags & DUK_ENUM_INCLUDE_NONENUMERABLE) && - !DUK_HOBJECT_E_SLOT_IS_ENUMERABLE(thr->heap, curr, i)) { - continue; - } - if (DUK_UNLIKELY(DUK_HSTRING_HAS_SYMBOL(k))) { - if (!(enum_flags & DUK_ENUM_INCLUDE_HIDDEN) && DUK_HSTRING_HAS_HIDDEN(k)) { - continue; - } - if (!(enum_flags & DUK_ENUM_INCLUDE_SYMBOLS)) { - continue; - } -#if !defined(DUK_USE_PREFER_SIZE) - need_sort = 1; -#endif - } else { - DUK_ASSERT(!DUK_HSTRING_HAS_HIDDEN(k)); /* would also have symbol flag */ - if (enum_flags & DUK_ENUM_EXCLUDE_STRINGS) { - continue; - } - } - if (DUK_HSTRING_HAS_ARRIDX(k)) { - /* This in currently only possible if the - * object has no array part: the array part - * is exhaustive when it is present. - */ -#if !defined(DUK_USE_PREFER_SIZE) - need_sort = 1; -#endif - } else { - if (enum_flags & DUK_ENUM_ARRAY_INDICES_ONLY) { - continue; - } - } - - DUK_ASSERT(DUK_HOBJECT_E_SLOT_IS_ACCESSOR(thr->heap, curr, i) || - !DUK_TVAL_IS_UNUSED(&DUK_HOBJECT_E_GET_VALUE_PTR(thr->heap, curr, i)->v)); - - duk__add_enum_key(thr, k); - - /* [enum_target res] */ - } - - /* Sort enumerated keys according to ES2015 requirements for - * the "inheritance level" just processed. This is far from - * optimal, ES2015 semantics could be achieved more efficiently - * by handling array index string keys (and symbol keys) - * specially above in effect doing the sort inline. - * - * Skip the sort if array index sorting is requested because - * we must consider all keys, also inherited, so an explicit - * sort is done for the whole result after we're done with the - * prototype chain. - * - * Also skip the sort if need_sort == 0, i.e. we know for - * certain that the enumerated order is already correct. - */ - sort_end_index = DUK_HOBJECT_GET_ENEXT(res); - - if (!(enum_flags & DUK_ENUM_SORT_ARRAY_INDICES)) { -#if defined(DUK_USE_PREFER_SIZE) - duk__sort_enum_keys_es6(thr, res, (duk_int_fast32_t) sort_start_index, (duk_int_fast32_t) sort_end_index); -#else - if (need_sort) { - DUK_DDD(DUK_DDDPRINT("need to sort")); - duk__sort_enum_keys_es6(thr, - res, - (duk_int_fast32_t) sort_start_index, - (duk_int_fast32_t) sort_end_index); - } else { - DUK_DDD(DUK_DDDPRINT("no need to sort")); - } -#endif - } - - sort_start_index = sort_end_index; - - if (enum_flags & DUK_ENUM_OWN_PROPERTIES_ONLY) { - break; - } - - curr = DUK_HOBJECT_GET_PROTOTYPE(thr->heap, curr); - } - - /* [enum_target res] */ - - duk_remove_m2(thr); - - /* [res] */ - - if (enum_flags & DUK_ENUM_SORT_ARRAY_INDICES) { - /* Some E5/E5.1 algorithms require that array indices are iterated - * in a strictly ascending order. This is the case for e.g. - * Array.prototype.forEach() and JSON.stringify() PropertyList - * handling. The caller can request an explicit sort in these - * cases. - */ - - /* Sort to ES2015 order which works for pure array incides but - * also for mixed keys. - */ - duk__sort_enum_keys_es6(thr, - res, - (duk_int_fast32_t) DUK__ENUM_START_INDEX, - (duk_int_fast32_t) DUK_HOBJECT_GET_ENEXT(res)); - } - -#if defined(DUK_USE_ES6_PROXY) -compact_and_return: -#endif - /* compact; no need to seal because object is internal */ - duk_hobject_compact_props(thr, res); - - DUK_DDD(DUK_DDDPRINT("created enumerator object: %!iT", (duk_tval *) duk_get_tval(thr, -1))); -} - -/* - * Returns non-zero if a key and/or value was enumerated, and: - * - * [enum] -> [key] (get_value == 0) - * [enum] -> [key value] (get_value == 1) - * - * Returns zero without pushing anything on the stack otherwise. - */ -DUK_INTERNAL duk_bool_t duk_hobject_enumerator_next(duk_hthread *thr, duk_bool_t get_value) { - duk_hobject *e; - duk_hobject *enum_target; - duk_hstring *res = NULL; - duk_uint_fast32_t idx; - duk_bool_t check_existence; - - DUK_ASSERT(thr != NULL); - - /* [... enum] */ - - e = duk_require_hobject(thr, -1); - - /* XXX use get tval ptr, more efficient */ - duk_get_prop_stridx_short(thr, -1, DUK_STRIDX_INT_NEXT); - idx = (duk_uint_fast32_t) duk_require_uint(thr, -1); - duk_pop(thr); - DUK_DDD(DUK_DDDPRINT("enumeration: index is: %ld", (long) idx)); - - /* Enumeration keys are checked against the enumeration target (to see - * that they still exist). In the proxy enumeration case _Target will - * be the proxy, and checking key existence against the proxy is not - * required (or sensible, as the keys may be fully virtual). - */ - duk_xget_owndataprop_stridx_short(thr, -1, DUK_STRIDX_INT_TARGET); - enum_target = duk_require_hobject(thr, -1); - DUK_ASSERT(enum_target != NULL); -#if defined(DUK_USE_ES6_PROXY) - check_existence = (!DUK_HOBJECT_IS_PROXY(enum_target)); -#else - check_existence = 1; -#endif - duk_pop(thr); /* still reachable */ - - DUK_DDD(DUK_DDDPRINT("getting next enum value, enum_target=%!iO, enumerator=%!iT", - (duk_heaphdr *) enum_target, - (duk_tval *) duk_get_tval(thr, -1))); - - /* no array part */ - for (;;) { - duk_hstring *k; - - if (idx >= DUK_HOBJECT_GET_ENEXT(e)) { - DUK_DDD(DUK_DDDPRINT("enumeration: ran out of elements")); - break; - } - - /* we know these because enum objects are internally created */ - k = DUK_HOBJECT_E_GET_KEY(thr->heap, e, idx); - DUK_ASSERT(k != NULL); - DUK_ASSERT(!DUK_HOBJECT_E_SLOT_IS_ACCESSOR(thr->heap, e, idx)); - DUK_ASSERT(!DUK_TVAL_IS_UNUSED(&DUK_HOBJECT_E_GET_VALUE(thr->heap, e, idx).v)); - - idx++; - - /* recheck that the property still exists */ - if (check_existence && !duk_hobject_hasprop_raw(thr, enum_target, k)) { - DUK_DDD(DUK_DDDPRINT("property deleted during enumeration, skip")); - continue; - } - - DUK_DDD(DUK_DDDPRINT("enumeration: found element, key: %!O", (duk_heaphdr *) k)); - res = k; - break; - } - - DUK_DDD(DUK_DDDPRINT("enumeration: updating next index to %ld", (long) idx)); - - duk_push_u32(thr, (duk_uint32_t) idx); - duk_put_prop_stridx_short(thr, -2, DUK_STRIDX_INT_NEXT); - - /* [... enum] */ - - if (res) { - duk_push_hstring(thr, res); - if (get_value) { - duk_push_hobject(thr, enum_target); - duk_dup_m2(thr); /* -> [... enum key enum_target key] */ - duk_get_prop(thr, -2); /* -> [... enum key enum_target val] */ - duk_remove_m2(thr); /* -> [... enum key val] */ - duk_remove(thr, -3); /* -> [... key val] */ - } else { - duk_remove_m2(thr); /* -> [... key] */ - } - return 1; - } else { - duk_pop(thr); /* -> [...] */ - return 0; - } -} - -/* - * Get enumerated keys in an ECMAScript array. Matches Object.keys() behavior - * described in E5 Section 15.2.3.14. - */ - -DUK_INTERNAL duk_ret_t duk_hobject_get_enumerated_keys(duk_hthread *thr, duk_small_uint_t enum_flags) { - duk_hobject *e; - duk_hstring **keys; - duk_tval *tv; - duk_uint_fast32_t count; - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(duk_get_hobject(thr, -1) != NULL); - - /* Create a temporary enumerator to get the (non-duplicated) key list; - * the enumerator state is initialized without being needed, but that - * has little impact. - */ - - duk_hobject_enumerator_create(thr, enum_flags); - e = duk_known_hobject(thr, -1); - - /* [enum_target enum res] */ - - /* Create dense result array to exact size. */ - DUK_ASSERT(DUK_HOBJECT_GET_ENEXT(e) >= DUK__ENUM_START_INDEX); - count = (duk_uint32_t) (DUK_HOBJECT_GET_ENEXT(e) - DUK__ENUM_START_INDEX); - - /* XXX: uninit would be OK */ - tv = duk_push_harray_with_size_outptr(thr, (duk_uint32_t) count); - DUK_ASSERT(count == 0 || tv != NULL); - DUK_ASSERT(!duk_is_bare_object(thr, -1)); - - /* Fill result array, no side effects. */ - - keys = DUK_HOBJECT_E_GET_KEY_BASE(thr->heap, e); - keys += DUK__ENUM_START_INDEX; - - while (count-- > 0) { - duk_hstring *k; - - k = *keys++; - DUK_ASSERT(k != NULL); /* enumerator must have no keys deleted */ - - DUK_TVAL_SET_STRING(tv, k); - tv++; - DUK_HSTRING_INCREF(thr, k); - } - - /* [enum_target enum res] */ - duk_remove_m2(thr); - - /* [enum_target res] */ - - return 1; /* return 1 to allow callers to tail call */ -} - -/* automatic undefs */ -#undef DUK__ENUM_START_INDEX -#line 1 "duk_hobject_misc.c" -/* - * Misc support functions - */ - -/* #include duk_internal.h -> already included */ - -DUK_INTERNAL duk_bool_t duk_hobject_prototype_chain_contains(duk_hthread *thr, - duk_hobject *h, - duk_hobject *p, - duk_bool_t ignore_loop) { - duk_uint_t sanity; - - DUK_ASSERT(thr != NULL); - - /* False if the object is NULL or the prototype 'p' is NULL. - * In particular, false if both are NULL (don't compare equal). - */ - if (h == NULL || p == NULL) { - return 0; - } - - sanity = DUK_HOBJECT_PROTOTYPE_CHAIN_SANITY; - do { - if (h == p) { - return 1; - } - - if (sanity-- == 0) { - if (ignore_loop) { - break; - } else { - DUK_ERROR_RANGE(thr, DUK_STR_PROTOTYPE_CHAIN_LIMIT); - DUK_WO_NORETURN(return 0;); - } - } - h = DUK_HOBJECT_GET_PROTOTYPE(thr->heap, h); - } while (h); - - return 0; -} - -DUK_INTERNAL void duk_hobject_set_prototype_updref(duk_hthread *thr, duk_hobject *h, duk_hobject *p) { -#if defined(DUK_USE_REFERENCE_COUNTING) - duk_hobject *tmp; - - DUK_ASSERT(h); - tmp = DUK_HOBJECT_GET_PROTOTYPE(thr->heap, h); - DUK_HOBJECT_SET_PROTOTYPE(thr->heap, h, p); - DUK_HOBJECT_INCREF_ALLOWNULL(thr, p); /* avoid problems if p == h->prototype */ - DUK_HOBJECT_DECREF_ALLOWNULL(thr, tmp); -#else - DUK_ASSERT(h); - DUK_UNREF(thr); - DUK_HOBJECT_SET_PROTOTYPE(thr->heap, h, p); -#endif -} -#line 1 "duk_hobject_pc2line.c" -/* - * Helpers for creating and querying pc2line debug data, which - * converts a bytecode program counter to a source line number. - * - * The run-time pc2line data is bit-packed, and documented in: - * - * doc/function-objects.rst - */ - -/* #include duk_internal.h -> already included */ - -#if defined(DUK_USE_PC2LINE) - -/* Generate pc2line data for an instruction sequence, leaving a buffer on stack top. */ -DUK_INTERNAL void duk_hobject_pc2line_pack(duk_hthread *thr, duk_compiler_instr *instrs, duk_uint_fast32_t length) { - duk_hbuffer_dynamic *h_buf; - duk_bitencoder_ctx be_ctx_alloc; - duk_bitencoder_ctx *be_ctx = &be_ctx_alloc; - duk_uint32_t *hdr; - duk_size_t new_size; - duk_uint_fast32_t num_header_entries; - duk_uint_fast32_t curr_offset; - duk_int_fast32_t curr_line, next_line, diff_line; - duk_uint_fast32_t curr_pc; - duk_uint_fast32_t hdr_index; - - DUK_ASSERT(length <= DUK_COMPILER_MAX_BYTECODE_LENGTH); - - num_header_entries = (length + DUK_PC2LINE_SKIP - 1) / DUK_PC2LINE_SKIP; - curr_offset = (duk_uint_fast32_t) (sizeof(duk_uint32_t) + num_header_entries * sizeof(duk_uint32_t) * 2); - - duk_push_dynamic_buffer(thr, (duk_size_t) curr_offset); - h_buf = (duk_hbuffer_dynamic *) duk_known_hbuffer(thr, -1); - DUK_ASSERT(DUK_HBUFFER_HAS_DYNAMIC(h_buf) && !DUK_HBUFFER_HAS_EXTERNAL(h_buf)); - - hdr = (duk_uint32_t *) DUK_HBUFFER_DYNAMIC_GET_DATA_PTR(thr->heap, h_buf); - DUK_ASSERT(hdr != NULL); - hdr[0] = (duk_uint32_t) length; /* valid pc range is [0, length[ */ - - curr_pc = 0U; - while (curr_pc < length) { - new_size = (duk_size_t) (curr_offset + DUK_PC2LINE_MAX_DIFF_LENGTH); - duk_hbuffer_resize(thr, h_buf, new_size); - - hdr = (duk_uint32_t *) DUK_HBUFFER_DYNAMIC_GET_DATA_PTR(thr->heap, h_buf); - DUK_ASSERT(hdr != NULL); - DUK_ASSERT(curr_pc < length); - hdr_index = 1 + (curr_pc / DUK_PC2LINE_SKIP) * 2; - curr_line = (duk_int_fast32_t) instrs[curr_pc].line; - hdr[hdr_index + 0] = (duk_uint32_t) curr_line; - hdr[hdr_index + 1] = (duk_uint32_t) curr_offset; - -#if 0 - DUK_DDD(DUK_DDDPRINT("hdr[%ld]: pc=%ld line=%ld offset=%ld", - (long) (curr_pc / DUK_PC2LINE_SKIP), - (long) curr_pc, - (long) hdr[hdr_index + 0], - (long) hdr[hdr_index + 1])); -#endif - - duk_memzero(be_ctx, sizeof(*be_ctx)); - be_ctx->data = ((duk_uint8_t *) hdr) + curr_offset; - be_ctx->length = (duk_size_t) DUK_PC2LINE_MAX_DIFF_LENGTH; - - for (;;) { - curr_pc++; - if (((curr_pc % DUK_PC2LINE_SKIP) == 0) || /* end of diff run */ - (curr_pc >= length)) { /* end of bytecode */ - break; - } - DUK_ASSERT(curr_pc < length); - next_line = (duk_int32_t) instrs[curr_pc].line; - diff_line = next_line - curr_line; - -#if 0 - DUK_DDD(DUK_DDDPRINT("curr_line=%ld, next_line=%ld -> diff_line=%ld", - (long) curr_line, (long) next_line, (long) diff_line)); -#endif - - if (diff_line == 0) { - /* 0 */ - duk_be_encode(be_ctx, 0, 1); - } else if (diff_line >= 1 && diff_line <= 4) { - /* 1 0 <2 bits> */ - duk_be_encode(be_ctx, (duk_uint32_t) ((0x02 << 2) + (diff_line - 1)), 4); - } else if (diff_line >= -0x80 && diff_line <= 0x7f) { - /* 1 1 0 <8 bits> */ - DUK_ASSERT(diff_line + 0x80 >= 0 && diff_line + 0x80 <= 0xff); - duk_be_encode(be_ctx, (duk_uint32_t) ((0x06 << 8) + (diff_line + 0x80)), 11); - } else { - /* 1 1 1 <32 bits> - * Encode in two parts to avoid bitencode 24-bit limitation - */ - duk_be_encode(be_ctx, (duk_uint32_t) ((0x07 << 16) + ((next_line >> 16) & 0xffff)), 19); - duk_be_encode(be_ctx, (duk_uint32_t) (next_line & 0xffff), 16); - } - - curr_line = next_line; - } - - duk_be_finish(be_ctx); - DUK_ASSERT(!be_ctx->truncated); - - /* be_ctx->offset == length of encoded bitstream */ - curr_offset += (duk_uint_fast32_t) be_ctx->offset; - } - - /* compact */ - new_size = (duk_size_t) curr_offset; - duk_hbuffer_resize(thr, h_buf, new_size); - - (void) duk_to_fixed_buffer(thr, -1, NULL); - - DUK_DDD(DUK_DDDPRINT("final pc2line data: pc_limit=%ld, length=%ld, %lf bits/opcode --> %!ixT", - (long) length, - (long) new_size, - (double) new_size * 8.0 / (double) length, - (duk_tval *) duk_get_tval(thr, -1))); -} - -/* PC is unsigned. If caller does PC arithmetic and gets a negative result, - * it will map to a large PC which is out of bounds and causes a zero to be - * returned. - */ -DUK_LOCAL duk_uint_fast32_t duk__hobject_pc2line_query_raw(duk_hthread *thr, duk_hbuffer_fixed *buf, duk_uint_fast32_t pc) { - duk_bitdecoder_ctx bd_ctx_alloc; - duk_bitdecoder_ctx *bd_ctx = &bd_ctx_alloc; - duk_uint32_t *hdr; - duk_uint_fast32_t start_offset; - duk_uint_fast32_t pc_limit; - duk_uint_fast32_t hdr_index; - duk_uint_fast32_t pc_base; - duk_uint_fast32_t n; - duk_uint_fast32_t curr_line; - - DUK_ASSERT(buf != NULL); - DUK_ASSERT(!DUK_HBUFFER_HAS_DYNAMIC((duk_hbuffer *) buf) && !DUK_HBUFFER_HAS_EXTERNAL((duk_hbuffer *) buf)); - DUK_UNREF(thr); - - /* - * Use the index in the header to find the right starting point - */ - - hdr_index = pc / DUK_PC2LINE_SKIP; - pc_base = hdr_index * DUK_PC2LINE_SKIP; - n = pc - pc_base; - - if (DUK_HBUFFER_FIXED_GET_SIZE(buf) <= sizeof(duk_uint32_t)) { - DUK_DD(DUK_DDPRINT("pc2line lookup failed: buffer is smaller than minimal header")); - goto pc2line_error; - } - - hdr = (duk_uint32_t *) (void *) DUK_HBUFFER_FIXED_GET_DATA_PTR(thr->heap, buf); - pc_limit = hdr[0]; - if (pc >= pc_limit) { - /* Note: pc is unsigned and cannot be negative */ - DUK_DD(DUK_DDPRINT("pc2line lookup failed: pc out of bounds (pc=%ld, limit=%ld)", (long) pc, (long) pc_limit)); - goto pc2line_error; - } - - curr_line = hdr[1 + hdr_index * 2]; - start_offset = hdr[1 + hdr_index * 2 + 1]; - if ((duk_size_t) start_offset > DUK_HBUFFER_FIXED_GET_SIZE(buf)) { - DUK_DD(DUK_DDPRINT("pc2line lookup failed: start_offset out of bounds (start_offset=%ld, buffer_size=%ld)", - (long) start_offset, - (long) DUK_HBUFFER_GET_SIZE((duk_hbuffer *) buf))); - goto pc2line_error; - } - - /* - * Iterate the bitstream (line diffs) until PC is reached - */ - - duk_memzero(bd_ctx, sizeof(*bd_ctx)); - bd_ctx->data = ((duk_uint8_t *) hdr) + start_offset; - bd_ctx->length = (duk_size_t) (DUK_HBUFFER_FIXED_GET_SIZE(buf) - start_offset); - -#if 0 - DUK_DDD(DUK_DDDPRINT("pc2line lookup: pc=%ld -> hdr_index=%ld, pc_base=%ld, n=%ld, start_offset=%ld", - (long) pc, (long) hdr_index, (long) pc_base, (long) n, (long) start_offset)); -#endif - - while (n > 0) { -#if 0 - DUK_DDD(DUK_DDDPRINT("lookup: n=%ld, curr_line=%ld", (long) n, (long) curr_line)); -#endif - - if (duk_bd_decode_flag(bd_ctx)) { - if (duk_bd_decode_flag(bd_ctx)) { - if (duk_bd_decode_flag(bd_ctx)) { - /* 1 1 1 <32 bits> */ - duk_uint_fast32_t t; - t = duk_bd_decode(bd_ctx, 16); /* workaround: max nbits = 24 now */ - t = (t << 16) + duk_bd_decode(bd_ctx, 16); - curr_line = t; - } else { - /* 1 1 0 <8 bits> */ - duk_uint_fast32_t t; - t = duk_bd_decode(bd_ctx, 8); - curr_line = curr_line + t - 0x80; - } - } else { - /* 1 0 <2 bits> */ - duk_uint_fast32_t t; - t = duk_bd_decode(bd_ctx, 2); - curr_line = curr_line + t + 1; - } - } else { - /* 0: no change */ - } - - n--; - } - - DUK_DDD(DUK_DDDPRINT("pc2line lookup result: pc %ld -> line %ld", (long) pc, (long) curr_line)); - return curr_line; - -pc2line_error: - DUK_D(DUK_DPRINT("pc2line conversion failed for pc=%ld", (long) pc)); - return 0; -} - -DUK_INTERNAL duk_uint_fast32_t duk_hobject_pc2line_query(duk_hthread *thr, duk_idx_t idx_func, duk_uint_fast32_t pc) { - duk_hbuffer_fixed *pc2line; - duk_uint_fast32_t line; - - /* XXX: now that pc2line is used by the debugger quite heavily in - * checked execution, this should be optimized to avoid value stack - * and perhaps also implement some form of pc2line caching (see - * future work in debugger.rst). - */ - - duk_xget_owndataprop_stridx_short(thr, idx_func, DUK_STRIDX_INT_PC2LINE); - pc2line = (duk_hbuffer_fixed *) (void *) duk_get_hbuffer(thr, -1); - if (pc2line != NULL) { - DUK_ASSERT(!DUK_HBUFFER_HAS_DYNAMIC((duk_hbuffer *) pc2line) && !DUK_HBUFFER_HAS_EXTERNAL((duk_hbuffer *) pc2line)); - line = duk__hobject_pc2line_query_raw(thr, pc2line, (duk_uint_fast32_t) pc); - } else { - line = 0; - } - duk_pop(thr); - - return line; -} - -#endif /* DUK_USE_PC2LINE */ -#line 1 "duk_hobject_props.c" -/* - * duk_hobject property access functionality. - * - * This is very central functionality for size, performance, and compliance. - * It is also rather intricate; see hobject-algorithms.rst for discussion on - * the algorithms and memory-management.rst for discussion on refcounts and - * side effect issues. - * - * Notes: - * - * - It might be tempting to assert "refcount nonzero" for objects - * being operated on, but that's not always correct: objects with - * a zero refcount may be operated on by the refcount implementation - * (finalization) for instance. Hence, no refcount assertions are made. - * - * - Many operations (memory allocation, identifier operations, etc) - * may cause arbitrary side effects (e.g. through GC and finalization). - * These side effects may invalidate duk_tval pointers which point to - * areas subject to reallocation (like value stack). Heap objects - * themselves have stable pointers. Holding heap object pointers or - * duk_tval copies is not problematic with respect to side effects; - * care must be taken when holding and using argument duk_tval pointers. - * - * - If a finalizer is executed, it may operate on the the same object - * we're currently dealing with. For instance, the finalizer might - * delete a certain property which has already been looked up and - * confirmed to exist. Ideally finalizers would be disabled if GC - * happens during property access. At the moment property table realloc - * disables finalizers, and all DECREFs may cause arbitrary changes so - * handle DECREF carefully. - * - * - The order of operations for a DECREF matters. When DECREF is executed, - * the entire object graph must be consistent; note that a refzero may - * lead to a mark-and-sweep through a refcount finalizer. Use NORZ macros - * and an explicit DUK_REFZERO_CHECK_xxx() if achieving correct order is hard. - */ - -/* - * XXX: array indices are mostly typed as duk_uint32_t here; duk_uarridx_t - * might be more appropriate. - */ - -/* #include duk_internal.h -> already included */ - -/* - * Local defines - */ - -#define DUK__NO_ARRAY_INDEX DUK_HSTRING_NO_ARRAY_INDEX - -/* Marker values for hash part. */ -#define DUK__HASH_UNUSED DUK_HOBJECT_HASHIDX_UNUSED -#define DUK__HASH_DELETED DUK_HOBJECT_HASHIDX_DELETED - -/* Valstack space that suffices for all local calls, excluding any recursion - * into ECMAScript or Duktape/C calls (Proxy, getters, etc). - */ -#define DUK__VALSTACK_SPACE 10 - -/* Valstack space allocated especially for proxy lookup which does a - * recursive property lookup. - */ -#define DUK__VALSTACK_PROXY_LOOKUP 20 - -/* - * Local prototypes - */ - -DUK_LOCAL_DECL duk_bool_t duk__check_arguments_map_for_get(duk_hthread *thr, - duk_hobject *obj, - duk_hstring *key, - duk_propdesc *temp_desc); -DUK_LOCAL_DECL void duk__check_arguments_map_for_put(duk_hthread *thr, - duk_hobject *obj, - duk_hstring *key, - duk_propdesc *temp_desc, - duk_bool_t throw_flag); -DUK_LOCAL_DECL void duk__check_arguments_map_for_delete(duk_hthread *thr, - duk_hobject *obj, - duk_hstring *key, - duk_propdesc *temp_desc); - -DUK_LOCAL_DECL duk_bool_t duk__handle_put_array_length_smaller(duk_hthread *thr, - duk_hobject *obj, - duk_uint32_t old_len, - duk_uint32_t new_len, - duk_bool_t force_flag, - duk_uint32_t *out_result_len); -DUK_LOCAL_DECL duk_bool_t duk__handle_put_array_length(duk_hthread *thr, duk_hobject *obj); - -DUK_LOCAL_DECL duk_bool_t -duk__get_propdesc(duk_hthread *thr, duk_hobject *obj, duk_hstring *key, duk_propdesc *out_desc, duk_small_uint_t flags); -DUK_LOCAL_DECL duk_bool_t duk__get_own_propdesc_raw(duk_hthread *thr, - duk_hobject *obj, - duk_hstring *key, - duk_uint32_t arr_idx, - duk_propdesc *out_desc, - duk_small_uint_t flags); - -DUK_LOCAL_DECL void duk__abandon_array_part(duk_hthread *thr, duk_hobject *obj); -DUK_LOCAL_DECL void duk__grow_props_for_array_item(duk_hthread *thr, duk_hobject *obj, duk_uint32_t highest_arr_idx); - -/* - * Misc helpers - */ - -/* Convert a duk_tval number (caller checks) to a 32-bit index. Returns - * DUK__NO_ARRAY_INDEX if the number is not whole or not a valid array - * index. - */ -/* XXX: for fastints, could use a variant which assumes a double duk_tval - * (and doesn't need to check for fastint again). - */ -DUK_LOCAL duk_uint32_t duk__tval_number_to_arr_idx(duk_tval *tv) { - duk_double_t dbl; - duk_uint32_t idx; - - DUK_ASSERT(tv != NULL); - DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv)); - - /* -0 is accepted here as index 0 because ToString(-0) == "0" which is - * in canonical form and thus an array index. - */ - dbl = DUK_TVAL_GET_NUMBER(tv); - idx = (duk_uint32_t) dbl; - if (duk_double_equals((duk_double_t) idx, dbl)) { - /* Is whole and within 32 bit range. If the value happens to be 0xFFFFFFFF, - * it's not a valid array index but will then match DUK__NO_ARRAY_INDEX. - */ - return idx; - } - return DUK__NO_ARRAY_INDEX; -} - -#if defined(DUK_USE_FASTINT) -/* Convert a duk_tval fastint (caller checks) to a 32-bit index. */ -DUK_LOCAL duk_uint32_t duk__tval_fastint_to_arr_idx(duk_tval *tv) { - duk_int64_t t; - - DUK_ASSERT(tv != NULL); - DUK_ASSERT(DUK_TVAL_IS_FASTINT(tv)); - - t = DUK_TVAL_GET_FASTINT(tv); - if (((duk_uint64_t) t & ~DUK_U64_CONSTANT(0xffffffff)) != 0) { - /* Catches >0x100000000 and negative values. */ - return DUK__NO_ARRAY_INDEX; - } - - /* If the value happens to be 0xFFFFFFFF, it's not a valid array index - * but will then match DUK__NO_ARRAY_INDEX. - */ - return (duk_uint32_t) t; -} -#endif /* DUK_USE_FASTINT */ - -/* Convert a duk_tval on the value stack (in a trusted index we don't validate) - * to a string or symbol using ES2015 ToPropertyKey(): - * http://www.ecma-international.org/ecma-262/6.0/#sec-topropertykey. - * - * Also check if it's a valid array index and return that (or DUK__NO_ARRAY_INDEX - * if not). - */ -DUK_LOCAL duk_uint32_t duk__to_property_key(duk_hthread *thr, duk_idx_t idx, duk_hstring **out_h) { - duk_uint32_t arr_idx; - duk_hstring *h; - duk_tval *tv_dst; - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(out_h != NULL); - DUK_ASSERT(duk_is_valid_index(thr, idx)); - DUK_ASSERT(idx < 0); - - /* XXX: The revised ES2015 ToPropertyKey() handling (ES5.1 was just - * ToString()) involves a ToPrimitive(), a symbol check, and finally - * a ToString(). Figure out the best way to have a good fast path - * but still be compliant and share code. - */ - - tv_dst = DUK_GET_TVAL_NEGIDX(thr, idx); /* intentionally unvalidated */ - if (DUK_TVAL_IS_STRING(tv_dst)) { - /* Most important path: strings and plain symbols are used as - * is. For symbols the array index check below is unnecessary - * (they're never valid array indices) but checking that the - * string is a symbol would make the plain string path slower - * unnecessarily. - */ - h = DUK_TVAL_GET_STRING(tv_dst); - } else { - h = duk_to_property_key_hstring(thr, idx); - } - DUK_ASSERT(h != NULL); - *out_h = h; - - arr_idx = DUK_HSTRING_GET_ARRIDX_FAST(h); - return arr_idx; -} - -DUK_LOCAL duk_uint32_t duk__push_tval_to_property_key(duk_hthread *thr, duk_tval *tv_key, duk_hstring **out_h) { - duk_push_tval(thr, tv_key); /* XXX: could use an unsafe push here */ - return duk__to_property_key(thr, -1, out_h); -} - -/* String is an own (virtual) property of a plain buffer. */ -DUK_LOCAL duk_bool_t duk__key_is_plain_buf_ownprop(duk_hthread *thr, duk_hbuffer *buf, duk_hstring *key, duk_uint32_t arr_idx) { - DUK_UNREF(thr); - - /* Virtual index properties. Checking explicitly for - * 'arr_idx != DUK__NO_ARRAY_INDEX' is not necessary - * because DUK__NO_ARRAY_INDEXi is always larger than - * maximum allowed buffer size. - */ - DUK_ASSERT(DUK__NO_ARRAY_INDEX >= DUK_HBUFFER_GET_SIZE(buf)); - if (arr_idx < DUK_HBUFFER_GET_SIZE(buf)) { - return 1; - } - - /* Other virtual properties. */ - return (key == DUK_HTHREAD_STRING_LENGTH(thr)); -} - -/* - * Helpers for managing property storage size - */ - -/* Get default hash part size for a certain entry part size. */ -#if defined(DUK_USE_HOBJECT_HASH_PART) -DUK_LOCAL duk_uint32_t duk__get_default_h_size(duk_uint32_t e_size) { - DUK_ASSERT(e_size <= DUK_HOBJECT_MAX_PROPERTIES); - - if (e_size >= DUK_USE_HOBJECT_HASH_PROP_LIMIT) { - duk_uint32_t res; - duk_uint32_t tmp; - - /* Hash size should be 2^N where N is chosen so that 2^N is - * larger than e_size. Extra shifting is used to ensure hash - * is relatively sparse. - */ - tmp = e_size; - res = 2; /* Result will be 2 ** (N + 1). */ - while (tmp >= 0x40) { - tmp >>= 6; - res <<= 6; - } - while (tmp != 0) { - tmp >>= 1; - res <<= 1; - } - DUK_ASSERT((DUK_HOBJECT_MAX_PROPERTIES << 2U) > DUK_HOBJECT_MAX_PROPERTIES); /* Won't wrap, even shifted by 2. */ - DUK_ASSERT(res > e_size); - return res; - } else { - return 0; - } -} -#endif /* USE_PROP_HASH_PART */ - -/* Get minimum entry part growth for a certain size. */ -DUK_LOCAL duk_uint32_t duk__get_min_grow_e(duk_uint32_t e_size) { - duk_uint32_t res; - - res = (e_size + DUK_USE_HOBJECT_ENTRY_MINGROW_ADD) / DUK_USE_HOBJECT_ENTRY_MINGROW_DIVISOR; - DUK_ASSERT(res >= 1); /* important for callers */ - return res; -} - -/* Get minimum array part growth for a certain size. */ -DUK_LOCAL duk_uint32_t duk__get_min_grow_a(duk_uint32_t a_size) { - duk_uint32_t res; - - res = (a_size + DUK_USE_HOBJECT_ARRAY_MINGROW_ADD) / DUK_USE_HOBJECT_ARRAY_MINGROW_DIVISOR; - DUK_ASSERT(res >= 1); /* important for callers */ - return res; -} - -/* Count actually used entry part entries (non-NULL keys). */ -DUK_LOCAL duk_uint32_t duk__count_used_e_keys(duk_hthread *thr, duk_hobject *obj) { - duk_uint_fast32_t i; - duk_uint_fast32_t n = 0; - duk_hstring **e; - - DUK_ASSERT(obj != NULL); - DUK_UNREF(thr); - - e = DUK_HOBJECT_E_GET_KEY_BASE(thr->heap, obj); - for (i = 0; i < DUK_HOBJECT_GET_ENEXT(obj); i++) { - if (*e++) { - n++; - } - } - return (duk_uint32_t) n; -} - -/* Count actually used array part entries and array minimum size. - * NOTE: 'out_min_size' can be computed much faster by starting from the - * end and breaking out early when finding first used entry, but this is - * not needed now. - */ -DUK_LOCAL void duk__compute_a_stats(duk_hthread *thr, duk_hobject *obj, duk_uint32_t *out_used, duk_uint32_t *out_min_size) { - duk_uint_fast32_t i; - duk_uint_fast32_t used = 0; - duk_uint_fast32_t highest_idx = (duk_uint_fast32_t) -1; /* see below */ - duk_tval *a; - - DUK_ASSERT(obj != NULL); - DUK_ASSERT(out_used != NULL); - DUK_ASSERT(out_min_size != NULL); - DUK_UNREF(thr); - - a = DUK_HOBJECT_A_GET_BASE(thr->heap, obj); - for (i = 0; i < DUK_HOBJECT_GET_ASIZE(obj); i++) { - duk_tval *tv = a++; - if (!DUK_TVAL_IS_UNUSED(tv)) { - used++; - highest_idx = i; - } - } - - /* Initial value for highest_idx is -1 coerced to unsigned. This - * is a bit odd, but (highest_idx + 1) will then wrap to 0 below - * for out_min_size as intended. - */ - - *out_used = (duk_uint32_t) used; - *out_min_size = (duk_uint32_t) (highest_idx + 1); /* 0 if no used entries */ -} - -/* Check array density and indicate whether or not the array part should be abandoned. */ -DUK_LOCAL duk_bool_t duk__abandon_array_density_check(duk_uint32_t a_used, duk_uint32_t a_size) { - /* - * Array abandon check; abandon if: - * - * new_used / new_size < limit - * new_used < limit * new_size || limit is 3 bits fixed point - * new_used < limit' / 8 * new_size || *8 - * 8*new_used < limit' * new_size || :8 - * new_used < limit' * (new_size / 8) - * - * Here, new_used = a_used, new_size = a_size. - * - * Note: some callers use approximate values for a_used and/or a_size - * (e.g. dropping a '+1' term). This doesn't affect the usefulness - * of the check, but may confuse debugging. - */ - - return (a_used < DUK_USE_HOBJECT_ARRAY_ABANDON_LIMIT * (a_size >> 3)); -} - -/* Fast check for extending array: check whether or not a slow density check is required. */ -DUK_LOCAL duk_bool_t duk__abandon_array_slow_check_required(duk_uint32_t arr_idx, duk_uint32_t old_size) { - duk_uint32_t new_size_min; - - /* - * In a fast check we assume old_size equals old_used (i.e., existing - * array is fully dense). - * - * Slow check if: - * - * (new_size - old_size) / old_size > limit - * new_size - old_size > limit * old_size - * new_size > (1 + limit) * old_size || limit' is 3 bits fixed point - * new_size > (1 + (limit' / 8)) * old_size || * 8 - * 8 * new_size > (8 + limit') * old_size || : 8 - * new_size > (8 + limit') * (old_size / 8) - * new_size > limit'' * (old_size / 8) || limit'' = 9 -> max 25% increase - * arr_idx + 1 > limit'' * (old_size / 8) - * - * This check doesn't work well for small values, so old_size is rounded - * up for the check (and the '+ 1' of arr_idx can be ignored in practice): - * - * arr_idx > limit'' * ((old_size + 7) / 8) - */ - - new_size_min = arr_idx + 1; - return (new_size_min >= DUK_USE_HOBJECT_ARRAY_ABANDON_MINSIZE) && - (arr_idx > DUK_USE_HOBJECT_ARRAY_FAST_RESIZE_LIMIT * ((old_size + 7) >> 3)); -} - -DUK_LOCAL duk_bool_t duk__abandon_array_check(duk_hthread *thr, duk_uint32_t arr_idx, duk_hobject *obj) { - duk_uint32_t min_size; - duk_uint32_t old_used; - duk_uint32_t old_size; - - if (!duk__abandon_array_slow_check_required(arr_idx, DUK_HOBJECT_GET_ASIZE(obj))) { - DUK_DDD(DUK_DDDPRINT("=> fast resize is OK")); - return 0; - } - - duk__compute_a_stats(thr, obj, &old_used, &old_size); - - DUK_DDD(DUK_DDDPRINT("abandon check, array stats: old_used=%ld, old_size=%ld, arr_idx=%ld", - (long) old_used, - (long) old_size, - (long) arr_idx)); - - min_size = arr_idx + 1; -#if defined(DUK_USE_OBJSIZES16) - if (min_size > DUK_UINT16_MAX) { - goto do_abandon; - } -#endif - DUK_UNREF(min_size); - - /* Note: intentionally use approximations to shave a few instructions: - * a_used = old_used (accurate: old_used + 1) - * a_size = arr_idx (accurate: arr_idx + 1) - */ - if (duk__abandon_array_density_check(old_used, arr_idx)) { - DUK_DD(DUK_DDPRINT("write to new array entry beyond current length, " - "decided to abandon array part (would become too sparse)")); - - /* Abandoning requires a props allocation resize and - * 'rechecks' the valstack, invalidating any existing - * valstack value pointers. - */ - goto do_abandon; - } - - DUK_DDD(DUK_DDDPRINT("=> decided to keep array part")); - return 0; - -do_abandon: - duk__abandon_array_part(thr, obj); - DUK_ASSERT(!DUK_HOBJECT_HAS_ARRAY_PART(obj)); - return 1; -} - -DUK_LOCAL duk_tval *duk__obtain_arridx_slot_slowpath(duk_hthread *thr, duk_uint32_t arr_idx, duk_hobject *obj) { - /* - * Array needs to grow, but we don't want it becoming too sparse. - * If it were to become sparse, abandon array part, moving all - * array entries into the entries part (for good). - * - * Since we don't keep track of actual density (used vs. size) of - * the array part, we need to estimate somehow. The check is made - * in two parts: - * - * - Check whether the resize need is small compared to the - * current size (relatively); if so, resize without further - * checking (essentially we assume that the original part is - * "dense" so that the result would be dense enough). - * - * - Otherwise, compute the resize using an actual density - * measurement based on counting the used array entries. - */ - - DUK_DDD(DUK_DDDPRINT("write to new array requires array resize, decide whether to do a " - "fast resize without abandon check (arr_idx=%ld, old_size=%ld)", - (long) arr_idx, - (long) DUK_HOBJECT_GET_ASIZE(obj))); - - if (DUK_UNLIKELY(duk__abandon_array_check(thr, arr_idx, obj) != 0)) { - DUK_ASSERT(!DUK_HOBJECT_HAS_ARRAY_PART(obj)); - return NULL; - } - - DUK_DD(DUK_DDPRINT("write to new array entry beyond current length, " - "decided to extend current allocation")); - - /* In principle it's possible to run out of memory extending the - * array but with the allocation going through if we were to abandon - * the array part and try again. In practice this should be rare - * because abandoned arrays have a higher per-entry footprint. - */ - - duk__grow_props_for_array_item(thr, obj, arr_idx); - - DUK_ASSERT(DUK_HOBJECT_HAS_ARRAY_PART(obj)); - DUK_ASSERT(arr_idx < DUK_HOBJECT_GET_ASIZE(obj)); - return DUK_HOBJECT_A_GET_VALUE_PTR(thr->heap, obj, arr_idx); -} - -DUK_LOCAL DUK_INLINE duk_tval *duk__obtain_arridx_slot(duk_hthread *thr, duk_uint32_t arr_idx, duk_hobject *obj) { - if (DUK_LIKELY(arr_idx < DUK_HOBJECT_GET_ASIZE(obj))) { - return DUK_HOBJECT_A_GET_VALUE_PTR(thr->heap, obj, arr_idx); - } else { - return duk__obtain_arridx_slot_slowpath(thr, arr_idx, obj); - } -} - -/* - * Proxy helpers - */ - -#if defined(DUK_USE_ES6_PROXY) -DUK_INTERNAL duk_bool_t duk_hobject_proxy_check(duk_hobject *obj, duk_hobject **out_target, duk_hobject **out_handler) { - duk_hproxy *h_proxy; - - DUK_ASSERT(obj != NULL); - DUK_ASSERT(out_target != NULL); - DUK_ASSERT(out_handler != NULL); - - /* Caller doesn't need to check exotic proxy behavior (but does so for - * some fast paths). - */ - if (DUK_LIKELY(!DUK_HOBJECT_IS_PROXY(obj))) { - return 0; - } - h_proxy = (duk_hproxy *) obj; - DUK_HPROXY_ASSERT_VALID(h_proxy); - - DUK_ASSERT(h_proxy->handler != NULL); - DUK_ASSERT(h_proxy->target != NULL); - *out_handler = h_proxy->handler; - *out_target = h_proxy->target; - - return 1; -} -#endif /* DUK_USE_ES6_PROXY */ - -/* Get Proxy target object. If the argument is not a Proxy, return it as is. - * If a Proxy is revoked, an error is thrown. - */ -#if defined(DUK_USE_ES6_PROXY) -DUK_INTERNAL duk_hobject *duk_hobject_resolve_proxy_target(duk_hobject *obj) { - DUK_ASSERT(obj != NULL); - - /* Resolve Proxy targets until Proxy chain ends. No explicit check for - * a Proxy loop: user code cannot create such a loop (it would only be - * possible by editing duk_hproxy references directly). - */ - - while (DUK_HOBJECT_IS_PROXY(obj)) { - duk_hproxy *h_proxy; - - h_proxy = (duk_hproxy *) obj; - DUK_HPROXY_ASSERT_VALID(h_proxy); - obj = h_proxy->target; - DUK_ASSERT(obj != NULL); - } - - DUK_ASSERT(obj != NULL); - return obj; -} -#endif /* DUK_USE_ES6_PROXY */ - -#if defined(DUK_USE_ES6_PROXY) -DUK_LOCAL duk_bool_t duk__proxy_check_prop(duk_hthread *thr, - duk_hobject *obj, - duk_small_uint_t stridx_trap, - duk_tval *tv_key, - duk_hobject **out_target) { - duk_hobject *h_handler; - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(obj != NULL); - DUK_ASSERT(tv_key != NULL); - DUK_ASSERT(out_target != NULL); - - if (!duk_hobject_proxy_check(obj, out_target, &h_handler)) { - return 0; - } - DUK_ASSERT(*out_target != NULL); - DUK_ASSERT(h_handler != NULL); - - /* XXX: At the moment Duktape accesses internal keys like _Finalizer using a - * normal property set/get which would allow a proxy handler to interfere with - * such behavior and to get access to internal key strings. This is not a problem - * as such because internal key strings can be created in other ways too (e.g. - * through buffers). The best fix is to change Duktape internal lookups to - * skip proxy behavior. Until that, internal property accesses bypass the - * proxy and are applied to the target (as if the handler did not exist). - * This has some side effects, see test-bi-proxy-internal-keys.js. - */ - - if (DUK_TVAL_IS_STRING(tv_key)) { - duk_hstring *h_key = (duk_hstring *) DUK_TVAL_GET_STRING(tv_key); - DUK_ASSERT(h_key != NULL); - if (DUK_HSTRING_HAS_HIDDEN(h_key)) { - /* Symbol accesses must go through proxy lookup in ES2015. - * Hidden symbols behave like Duktape 1.x internal keys - * and currently won't. - */ - DUK_DDD(DUK_DDDPRINT("hidden key, skip proxy handler and apply to target")); - return 0; - } - } - - /* The handler is looked up with a normal property lookup; it may be an - * accessor or the handler object itself may be a proxy object. If the - * handler is a proxy, we need to extend the valstack as we make a - * recursive proxy check without a function call in between (in fact - * there is no limit to the potential recursion here). - * - * (For sanity, proxy creation rejects another proxy object as either - * the handler or the target at the moment so recursive proxy cases - * are not realized now.) - */ - - /* XXX: C recursion limit if proxies are allowed as handler/target values */ - - duk_require_stack(thr, DUK__VALSTACK_PROXY_LOOKUP); - duk_push_hobject(thr, h_handler); - if (duk_get_prop_stridx_short(thr, -1, stridx_trap)) { - /* -> [ ... handler trap ] */ - duk_insert(thr, -2); /* -> [ ... trap handler ] */ - - /* stack prepped for func call: [ ... trap handler ] */ - return 1; - } else { - duk_pop_2_unsafe(thr); - return 0; - } -} -#endif /* DUK_USE_ES6_PROXY */ - -/* - * Reallocate property allocation, moving properties to the new allocation. - * - * Includes key compaction, rehashing, and can also optionally abandon - * the array part, 'migrating' array entries into the beginning of the - * new entry part. - * - * There is no support for in-place reallocation or just compacting keys - * without resizing the property allocation. This is intentional to keep - * code size minimal, but would be useful future work. - * - * The implementation is relatively straightforward, except for the array - * abandonment process. Array abandonment requires that new string keys - * are interned, which may trigger GC. All keys interned so far must be - * reachable for GC at all times and correctly refcounted for; valstack is - * used for that now. - * - * Also, a GC triggered during this reallocation process must not interfere - * with the object being resized. This is currently controlled by preventing - * finalizers (as they may affect ANY object) and object compaction in - * mark-and-sweep. It would suffice to protect only this particular object - * from compaction, however. DECREF refzero cascades are side effect free - * and OK. - * - * Note: because we need to potentially resize the valstack (as part - * of abandoning the array part), any tval pointers to the valstack - * will become invalid after this call. - */ - -DUK_INTERNAL void duk_hobject_realloc_props(duk_hthread *thr, - duk_hobject *obj, - duk_uint32_t new_e_size, - duk_uint32_t new_a_size, - duk_uint32_t new_h_size, - duk_bool_t abandon_array) { - duk_small_uint_t prev_ms_base_flags; - duk_uint32_t new_alloc_size; - duk_uint32_t new_e_size_adjusted; - duk_uint8_t *new_p; - duk_hstring **new_e_k; - duk_propvalue *new_e_pv; - duk_uint8_t *new_e_f; - duk_tval *new_a; - duk_uint32_t *new_h; - duk_uint32_t new_e_next; - duk_uint_fast32_t i; - duk_size_t array_copy_size; -#if defined(DUK_USE_ASSERTIONS) - duk_bool_t prev_error_not_allowed; -#endif - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(obj != NULL); - DUK_ASSERT(!abandon_array || new_a_size == 0); /* if abandon_array, new_a_size must be 0 */ - DUK_ASSERT(DUK_HOBJECT_GET_PROPS(thr->heap, obj) != NULL || - (DUK_HOBJECT_GET_ESIZE(obj) == 0 && DUK_HOBJECT_GET_ASIZE(obj) == 0)); - DUK_ASSERT(new_h_size == 0 || new_h_size >= new_e_size); /* required to guarantee success of rehashing, - * intentionally use unadjusted new_e_size - */ - DUK_ASSERT(!DUK_HEAPHDR_HAS_READONLY((duk_heaphdr *) obj)); - DUK_ASSERT_VALSTACK_SPACE(thr, DUK__VALSTACK_SPACE); - - DUK_STATS_INC(thr->heap, stats_object_realloc_props); - - /* - * Pre resize assertions. - */ - -#if defined(DUK_USE_ASSERTIONS) - /* XXX: pre-checks (such as no duplicate keys) */ -#endif - - /* - * For property layout 1, tweak e_size to ensure that the whole entry - * part (key + val + flags) is a suitable multiple for alignment - * (platform specific). - * - * Property layout 2 does not require this tweaking and is preferred - * on low RAM platforms requiring alignment. - */ - -#if defined(DUK_USE_HOBJECT_LAYOUT_2) || defined(DUK_USE_HOBJECT_LAYOUT_3) - DUK_DDD(DUK_DDDPRINT("using layout 2 or 3, no need to pad e_size: %ld", (long) new_e_size)); - new_e_size_adjusted = new_e_size; -#elif defined(DUK_USE_HOBJECT_LAYOUT_1) && (DUK_HOBJECT_ALIGN_TARGET == 1) - DUK_DDD(DUK_DDDPRINT("using layout 1, but no need to pad e_size: %ld", (long) new_e_size)); - new_e_size_adjusted = new_e_size; -#elif defined(DUK_USE_HOBJECT_LAYOUT_1) && ((DUK_HOBJECT_ALIGN_TARGET == 4) || (DUK_HOBJECT_ALIGN_TARGET == 8)) - new_e_size_adjusted = - (new_e_size + (duk_uint32_t) DUK_HOBJECT_ALIGN_TARGET - 1U) & (~((duk_uint32_t) DUK_HOBJECT_ALIGN_TARGET - 1U)); - DUK_DDD(DUK_DDDPRINT("using layout 1, and alignment target is %ld, adjusted e_size: %ld -> %ld", - (long) DUK_HOBJECT_ALIGN_TARGET, - (long) new_e_size, - (long) new_e_size_adjusted)); - DUK_ASSERT(new_e_size_adjusted >= new_e_size); -#else -#error invalid hobject layout defines -#endif - - /* - * Debug logging after adjustment. - */ - - DUK_DDD(DUK_DDDPRINT( - "attempt to resize hobject %p props (%ld -> %ld bytes), from {p=%p,e_size=%ld,e_next=%ld,a_size=%ld,h_size=%ld} to " - "{e_size=%ld,a_size=%ld,h_size=%ld}, abandon_array=%ld, unadjusted new_e_size=%ld", - (void *) obj, - (long) DUK_HOBJECT_P_COMPUTE_SIZE(DUK_HOBJECT_GET_ESIZE(obj), DUK_HOBJECT_GET_ASIZE(obj), DUK_HOBJECT_GET_HSIZE(obj)), - (long) DUK_HOBJECT_P_COMPUTE_SIZE(new_e_size_adjusted, new_a_size, new_h_size), - (void *) DUK_HOBJECT_GET_PROPS(thr->heap, obj), - (long) DUK_HOBJECT_GET_ESIZE(obj), - (long) DUK_HOBJECT_GET_ENEXT(obj), - (long) DUK_HOBJECT_GET_ASIZE(obj), - (long) DUK_HOBJECT_GET_HSIZE(obj), - (long) new_e_size_adjusted, - (long) new_a_size, - (long) new_h_size, - (long) abandon_array, - (long) new_e_size)); - - /* - * Property count check. This is the only point where we ensure that - * we don't get more (allocated) property space that we can handle. - * There aren't hard limits as such, but some algorithms may fail - * if we get too close to the 4G property limit. - * - * Since this works based on allocation size (not actually used size), - * the limit is a bit approximate but good enough in practice. - */ - - if (new_e_size_adjusted + new_a_size > DUK_HOBJECT_MAX_PROPERTIES) { - DUK_ERROR_ALLOC_FAILED(thr); - DUK_WO_NORETURN(return;); - } -#if defined(DUK_USE_OBJSIZES16) - if (new_e_size_adjusted > DUK_UINT16_MAX || new_a_size > DUK_UINT16_MAX) { - /* If caller gave us sizes larger than what we can store, - * fail memory safely with an internal error rather than - * truncating the sizes. - */ - DUK_ERROR_INTERNAL(thr); - DUK_WO_NORETURN(return;); - } -#endif - - /* - * Compute new alloc size and alloc new area. - * - * The new area is not tracked in the heap at all, so it's critical - * we get to free/keep it in a controlled manner. - */ - -#if defined(DUK_USE_ASSERTIONS) - /* Whole path must be error throw free, but we may be called from - * within error handling so can't assert for error_not_allowed == 0. - */ - prev_error_not_allowed = thr->heap->error_not_allowed; - thr->heap->error_not_allowed = 1; -#endif - prev_ms_base_flags = thr->heap->ms_base_flags; - thr->heap->ms_base_flags |= - DUK_MS_FLAG_NO_OBJECT_COMPACTION; /* Avoid attempt to compact the current object (all objects really). */ - thr->heap->pf_prevent_count++; /* Avoid finalizers. */ - DUK_ASSERT(thr->heap->pf_prevent_count != 0); /* Wrap. */ - - new_alloc_size = DUK_HOBJECT_P_COMPUTE_SIZE(new_e_size_adjusted, new_a_size, new_h_size); - DUK_DDD(DUK_DDDPRINT("new hobject allocation size is %ld", (long) new_alloc_size)); - if (new_alloc_size == 0) { - DUK_ASSERT(new_e_size_adjusted == 0); - DUK_ASSERT(new_a_size == 0); - DUK_ASSERT(new_h_size == 0); - new_p = NULL; - } else { - /* Alloc may trigger mark-and-sweep but no compaction, and - * cannot throw. - */ -#if 0 /* XXX: inject test */ - if (1) { - new_p = NULL; - goto alloc_failed; - } -#endif - new_p = (duk_uint8_t *) DUK_ALLOC(thr->heap, new_alloc_size); - if (new_p == NULL) { - /* NULL always indicates alloc failure because - * new_alloc_size > 0. - */ - goto alloc_failed; - } - } - - /* Set up pointers to the new property area: this is hidden behind a macro - * because it is memory layout specific. - */ - DUK_HOBJECT_P_SET_REALLOC_PTRS(new_p, - new_e_k, - new_e_pv, - new_e_f, - new_a, - new_h, - new_e_size_adjusted, - new_a_size, - new_h_size); - DUK_UNREF(new_h); /* happens when hash part dropped */ - new_e_next = 0; - - /* if new_p == NULL, all of these pointers are NULL */ - DUK_ASSERT((new_p != NULL) || (new_e_k == NULL && new_e_pv == NULL && new_e_f == NULL && new_a == NULL && new_h == NULL)); - - DUK_DDD(DUK_DDDPRINT("new alloc size %ld, new_e_k=%p, new_e_pv=%p, new_e_f=%p, new_a=%p, new_h=%p", - (long) new_alloc_size, - (void *) new_e_k, - (void *) new_e_pv, - (void *) new_e_f, - (void *) new_a, - (void *) new_h)); - - /* - * Migrate array part to start of entries if requested. - * - * Note: from an enumeration perspective the order of entry keys matters. - * Array keys should appear wherever they appeared before the array abandon - * operation. (This no longer matters much because keys are ES2015 sorted.) - */ - - if (abandon_array) { - /* Assuming new_a_size == 0, and that entry part contains - * no conflicting keys, refcounts do not need to be adjusted for - * the values, as they remain exactly the same. - * - * The keys, however, need to be interned, incref'd, and be - * reachable for GC. Any intern attempt may trigger a GC and - * claim any non-reachable strings, so every key must be reachable - * at all times. Refcounts must be correct to satisfy refcount - * assertions. - * - * A longjmp must not occur here, as the new_p allocation would - * leak. Refcounts would come out correctly as the interned - * strings are valstack tracked. - */ - DUK_ASSERT(new_a_size == 0); - - DUK_STATS_INC(thr->heap, stats_object_abandon_array); - - for (i = 0; i < DUK_HOBJECT_GET_ASIZE(obj); i++) { - duk_tval *tv1; - duk_tval *tv2; - duk_hstring *key; - - DUK_ASSERT(DUK_HOBJECT_GET_PROPS(thr->heap, obj) != NULL); - - tv1 = DUK_HOBJECT_A_GET_VALUE_PTR(thr->heap, obj, i); - if (DUK_TVAL_IS_UNUSED(tv1)) { - continue; - } - - DUK_ASSERT(new_p != NULL && new_e_k != NULL && new_e_pv != NULL && new_e_f != NULL); - - /* - * Intern key via the valstack to ensure reachability behaves - * properly. We must avoid longjmp's here so use non-checked - * primitives. - * - * Note: duk_check_stack() potentially reallocs the valstack, - * invalidating any duk_tval pointers to valstack. Callers - * must be careful. - */ - -#if 0 /* XXX: inject test */ - if (1) { - goto abandon_error; - } -#endif - /* Never shrinks; auto-adds DUK_VALSTACK_INTERNAL_EXTRA, which - * is generous. - */ - if (!duk_check_stack(thr, 1)) { - goto abandon_error; - } - DUK_ASSERT_VALSTACK_SPACE(thr, 1); - key = duk_heap_strtable_intern_u32(thr->heap, (duk_uint32_t) i); - if (key == NULL) { - goto abandon_error; - } - duk_push_hstring(thr, key); /* keep key reachable for GC etc; guaranteed not to fail */ - - /* Key is now reachable in the valstack, don't INCREF - * the new allocation yet (we'll steal the refcounts - * from the value stack once all keys are done). - */ - - new_e_k[new_e_next] = key; - tv2 = &new_e_pv[new_e_next].v; /* array entries are all plain values */ - DUK_TVAL_SET_TVAL(tv2, tv1); - new_e_f[new_e_next] = - DUK_PROPDESC_FLAG_WRITABLE | DUK_PROPDESC_FLAG_ENUMERABLE | DUK_PROPDESC_FLAG_CONFIGURABLE; - new_e_next++; - - /* Note: new_e_next matches pushed temp key count, and nothing can - * fail above between the push and this point. - */ - } - - /* Steal refcounts from value stack. */ - DUK_DDD(DUK_DDDPRINT("abandon array: pop %ld key temps from valstack", (long) new_e_next)); - duk_pop_n_nodecref_unsafe(thr, (duk_idx_t) new_e_next); - } - - /* - * Copy keys and values in the entry part (compacting them at the same time). - */ - - for (i = 0; i < DUK_HOBJECT_GET_ENEXT(obj); i++) { - duk_hstring *key; - - DUK_ASSERT(DUK_HOBJECT_GET_PROPS(thr->heap, obj) != NULL); - - key = DUK_HOBJECT_E_GET_KEY(thr->heap, obj, i); - if (key == NULL) { - continue; - } - - DUK_ASSERT(new_p != NULL && new_e_k != NULL && new_e_pv != NULL && new_e_f != NULL); - - new_e_k[new_e_next] = key; - new_e_pv[new_e_next] = DUK_HOBJECT_E_GET_VALUE(thr->heap, obj, i); - new_e_f[new_e_next] = DUK_HOBJECT_E_GET_FLAGS(thr->heap, obj, i); - new_e_next++; - } - /* the entries [new_e_next, new_e_size_adjusted[ are left uninitialized on purpose (ok, not gc reachable) */ - - /* - * Copy array elements to new array part. If the new array part is - * larger, initialize the unused entries as UNUSED because they are - * GC reachable. - */ - -#if defined(DUK_USE_ASSERTIONS) - /* Caller must have decref'd values above new_a_size (if that is necessary). */ - if (!abandon_array) { - for (i = new_a_size; i < DUK_HOBJECT_GET_ASIZE(obj); i++) { - duk_tval *tv; - tv = DUK_HOBJECT_A_GET_VALUE_PTR(thr->heap, obj, i); - DUK_ASSERT(DUK_TVAL_IS_UNUSED(tv)); - } - } -#endif - if (new_a_size > DUK_HOBJECT_GET_ASIZE(obj)) { - array_copy_size = sizeof(duk_tval) * DUK_HOBJECT_GET_ASIZE(obj); - } else { - array_copy_size = sizeof(duk_tval) * new_a_size; - } - - DUK_ASSERT(new_a != NULL || array_copy_size == 0U); - DUK_ASSERT(DUK_HOBJECT_GET_PROPS(thr->heap, obj) != NULL || array_copy_size == 0U); - DUK_ASSERT(DUK_HOBJECT_GET_ASIZE(obj) > 0 || array_copy_size == 0U); - duk_memcpy_unsafe((void *) new_a, (const void *) DUK_HOBJECT_A_GET_BASE(thr->heap, obj), array_copy_size); - - for (i = DUK_HOBJECT_GET_ASIZE(obj); i < new_a_size; i++) { - duk_tval *tv = &new_a[i]; - DUK_TVAL_SET_UNUSED(tv); - } - - /* - * Rebuild the hash part always from scratch (guaranteed to finish - * as long as caller gave consistent parameters). - * - * Any resize of hash part requires rehashing. In addition, by rehashing - * get rid of any elements marked deleted (DUK__HASH_DELETED) which is critical - * to ensuring the hash part never fills up. - */ - -#if defined(DUK_USE_HOBJECT_HASH_PART) - if (new_h_size == 0) { - DUK_DDD(DUK_DDDPRINT("no hash part, no rehash")); - } else { - duk_uint32_t mask; - - DUK_ASSERT(new_h != NULL); - - /* fill new_h with u32 0xff = UNUSED */ - DUK_ASSERT(new_h_size > 0); - duk_memset(new_h, 0xff, sizeof(duk_uint32_t) * new_h_size); - - DUK_ASSERT(new_e_next <= new_h_size); /* equality not actually possible */ - - mask = new_h_size - 1; - for (i = 0; i < new_e_next; i++) { - duk_hstring *key = new_e_k[i]; - duk_uint32_t j, step; - - DUK_ASSERT(key != NULL); - j = DUK_HSTRING_GET_HASH(key) & mask; - step = 1; /* Cache friendly but clustering prone. */ - - for (;;) { - DUK_ASSERT(new_h[j] != DUK__HASH_DELETED); /* should never happen */ - if (new_h[j] == DUK__HASH_UNUSED) { - DUK_DDD(DUK_DDDPRINT("rebuild hit %ld -> %ld", (long) j, (long) i)); - new_h[j] = (duk_uint32_t) i; - break; - } - DUK_DDD(DUK_DDDPRINT("rebuild miss %ld, step %ld", (long) j, (long) step)); - j = (j + step) & mask; - - /* Guaranteed to finish (hash is larger than #props). */ - } - } - } -#endif /* DUK_USE_HOBJECT_HASH_PART */ - - /* - * Nice debug log. - */ - - DUK_DD(DUK_DDPRINT( - "resized hobject %p props (%ld -> %ld bytes), from {p=%p,e_size=%ld,e_next=%ld,a_size=%ld,h_size=%ld} to " - "{p=%p,e_size=%ld,e_next=%ld,a_size=%ld,h_size=%ld}, abandon_array=%ld, unadjusted new_e_size=%ld", - (void *) obj, - (long) DUK_HOBJECT_P_COMPUTE_SIZE(DUK_HOBJECT_GET_ESIZE(obj), DUK_HOBJECT_GET_ASIZE(obj), DUK_HOBJECT_GET_HSIZE(obj)), - (long) new_alloc_size, - (void *) DUK_HOBJECT_GET_PROPS(thr->heap, obj), - (long) DUK_HOBJECT_GET_ESIZE(obj), - (long) DUK_HOBJECT_GET_ENEXT(obj), - (long) DUK_HOBJECT_GET_ASIZE(obj), - (long) DUK_HOBJECT_GET_HSIZE(obj), - (void *) new_p, - (long) new_e_size_adjusted, - (long) new_e_next, - (long) new_a_size, - (long) new_h_size, - (long) abandon_array, - (long) new_e_size)); - - /* - * All done, switch properties ('p') allocation to new one. - */ - - DUK_FREE_CHECKED(thr, DUK_HOBJECT_GET_PROPS(thr->heap, obj)); /* NULL obj->p is OK */ - DUK_HOBJECT_SET_PROPS(thr->heap, obj, new_p); - DUK_HOBJECT_SET_ESIZE(obj, new_e_size_adjusted); - DUK_HOBJECT_SET_ENEXT(obj, new_e_next); - DUK_HOBJECT_SET_ASIZE(obj, new_a_size); - DUK_HOBJECT_SET_HSIZE(obj, new_h_size); - - /* Clear array part flag only after switching. */ - if (abandon_array) { - DUK_HOBJECT_CLEAR_ARRAY_PART(obj); - } - - DUK_DDD(DUK_DDDPRINT("resize result: %!O", (duk_heaphdr *) obj)); - - DUK_ASSERT(thr->heap->pf_prevent_count > 0); - thr->heap->pf_prevent_count--; - thr->heap->ms_base_flags = prev_ms_base_flags; -#if defined(DUK_USE_ASSERTIONS) - DUK_ASSERT(thr->heap->error_not_allowed == 1); - thr->heap->error_not_allowed = prev_error_not_allowed; -#endif - - /* - * Post resize assertions. - */ - -#if defined(DUK_USE_ASSERTIONS) - /* XXX: post-checks (such as no duplicate keys) */ -#endif - return; - - /* - * Abandon array failed. We don't need to DECREF anything - * because the references in the new allocation are not - * INCREF'd until abandon is complete. The string interned - * keys are on the value stack and are handled normally by - * unwind. - */ - -abandon_error: -alloc_failed: - DUK_D(DUK_DPRINT("object property table resize failed")); - - DUK_FREE_CHECKED(thr, new_p); /* OK for NULL. */ - - thr->heap->pf_prevent_count--; - thr->heap->ms_base_flags = prev_ms_base_flags; -#if defined(DUK_USE_ASSERTIONS) - DUK_ASSERT(thr->heap->error_not_allowed == 1); - thr->heap->error_not_allowed = prev_error_not_allowed; -#endif - - DUK_ERROR_ALLOC_FAILED(thr); - DUK_WO_NORETURN(return;); -} - -/* - * Helpers to resize properties allocation on specific needs. - */ - -DUK_INTERNAL void duk_hobject_resize_entrypart(duk_hthread *thr, duk_hobject *obj, duk_uint32_t new_e_size) { - duk_uint32_t old_e_size; - duk_uint32_t new_a_size; - duk_uint32_t new_h_size; - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(obj != NULL); - - old_e_size = DUK_HOBJECT_GET_ESIZE(obj); - if (old_e_size > new_e_size) { - new_e_size = old_e_size; - } -#if defined(DUK_USE_HOBJECT_HASH_PART) - new_h_size = duk__get_default_h_size(new_e_size); -#else - new_h_size = 0; -#endif - new_a_size = DUK_HOBJECT_GET_ASIZE(obj); - - duk_hobject_realloc_props(thr, obj, new_e_size, new_a_size, new_h_size, 0); -} - -/* Grow entry part allocation for one additional entry. */ -DUK_LOCAL void duk__grow_props_for_new_entry_item(duk_hthread *thr, duk_hobject *obj) { - duk_uint32_t old_e_used; /* actually used, non-NULL entries */ - duk_uint32_t new_e_size_minimum; - duk_uint32_t new_e_size; - duk_uint32_t new_a_size; - duk_uint32_t new_h_size; - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(obj != NULL); - - /* Duktape 0.11.0 and prior tried to optimize the resize by not - * counting the number of actually used keys prior to the resize. - * This worked mostly well but also caused weird leak-like behavior - * as in: test-bug-object-prop-alloc-unbounded.js. So, now we count - * the keys explicitly to compute the new entry part size. - */ - - old_e_used = duk__count_used_e_keys(thr, obj); - new_e_size_minimum = old_e_used + 1; - new_e_size = old_e_used + duk__get_min_grow_e(old_e_used); -#if defined(DUK_USE_HOBJECT_HASH_PART) - new_h_size = duk__get_default_h_size(new_e_size); -#else - new_h_size = 0; -#endif - new_a_size = DUK_HOBJECT_GET_ASIZE(obj); - -#if defined(DUK_USE_OBJSIZES16) - if (new_e_size > DUK_UINT16_MAX) { - new_e_size = DUK_UINT16_MAX; - } - if (new_h_size > DUK_UINT16_MAX) { - new_h_size = DUK_UINT16_MAX; - } - if (new_a_size > DUK_UINT16_MAX) { - new_a_size = DUK_UINT16_MAX; - } -#endif - DUK_ASSERT(new_h_size == 0 || new_h_size >= new_e_size); - - if (!(new_e_size >= new_e_size_minimum)) { - DUK_ERROR_ALLOC_FAILED(thr); - DUK_WO_NORETURN(return;); - } - - duk_hobject_realloc_props(thr, obj, new_e_size, new_a_size, new_h_size, 0); -} - -/* Grow array part for a new highest array index. */ -DUK_LOCAL void duk__grow_props_for_array_item(duk_hthread *thr, duk_hobject *obj, duk_uint32_t highest_arr_idx) { - duk_uint32_t new_e_size; - duk_uint32_t new_a_size; - duk_uint32_t new_a_size_minimum; - duk_uint32_t new_h_size; - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(obj != NULL); - DUK_ASSERT(highest_arr_idx >= DUK_HOBJECT_GET_ASIZE(obj)); - - new_e_size = DUK_HOBJECT_GET_ESIZE(obj); - new_h_size = DUK_HOBJECT_GET_HSIZE(obj); - new_a_size_minimum = highest_arr_idx + 1; - new_a_size = highest_arr_idx + duk__get_min_grow_a(highest_arr_idx); - DUK_ASSERT(new_a_size >= highest_arr_idx + 1); /* duk__get_min_grow_a() is always >= 1 */ - -#if defined(DUK_USE_OBJSIZES16) - if (new_e_size > DUK_UINT16_MAX) { - new_e_size = DUK_UINT16_MAX; - } - if (new_h_size > DUK_UINT16_MAX) { - new_h_size = DUK_UINT16_MAX; - } - if (new_a_size > DUK_UINT16_MAX) { - new_a_size = DUK_UINT16_MAX; - } -#endif - - if (!(new_a_size >= new_a_size_minimum)) { - DUK_ERROR_ALLOC_FAILED(thr); - DUK_WO_NORETURN(return;); - } - - duk_hobject_realloc_props(thr, obj, new_e_size, new_a_size, new_h_size, 0); -} - -/* Abandon array part, moving array entries into entries part. - * This requires a props resize, which is a heavy operation. - * We also compact the entries part while we're at it, although - * this is not strictly required. - */ -DUK_LOCAL void duk__abandon_array_part(duk_hthread *thr, duk_hobject *obj) { - duk_uint32_t new_e_size_minimum; - duk_uint32_t new_e_size; - duk_uint32_t new_a_size; - duk_uint32_t new_h_size; - duk_uint32_t e_used; /* actually used, non-NULL keys */ - duk_uint32_t a_used; - duk_uint32_t a_size; - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(obj != NULL); - - e_used = duk__count_used_e_keys(thr, obj); - duk__compute_a_stats(thr, obj, &a_used, &a_size); - - /* - * Must guarantee all actually used array entries will fit into - * new entry part. Add one growth step to ensure we don't run out - * of space right away. - */ - - new_e_size_minimum = e_used + a_used; - new_e_size = new_e_size_minimum + duk__get_min_grow_e(new_e_size_minimum); - new_a_size = 0; -#if defined(DUK_USE_HOBJECT_HASH_PART) - new_h_size = duk__get_default_h_size(new_e_size); -#else - new_h_size = 0; -#endif - -#if defined(DUK_USE_OBJSIZES16) - if (new_e_size > DUK_UINT16_MAX) { - new_e_size = DUK_UINT16_MAX; - } - if (new_h_size > DUK_UINT16_MAX) { - new_h_size = DUK_UINT16_MAX; - } - if (new_a_size > DUK_UINT16_MAX) { - new_a_size = DUK_UINT16_MAX; - } -#endif - - if (!(new_e_size >= new_e_size_minimum)) { - DUK_ERROR_ALLOC_FAILED(thr); - DUK_WO_NORETURN(return;); - } - - DUK_DD(DUK_DDPRINT("abandon array part for hobject %p, " - "array stats before: e_used=%ld, a_used=%ld, a_size=%ld; " - "resize to e_size=%ld, a_size=%ld, h_size=%ld", - (void *) obj, - (long) e_used, - (long) a_used, - (long) a_size, - (long) new_e_size, - (long) new_a_size, - (long) new_h_size)); - - duk_hobject_realloc_props(thr, obj, new_e_size, new_a_size, new_h_size, 1); -} - -/* - * Compact an object. Minimizes allocation size for objects which are - * not likely to be extended. This is useful for internal and non- - * extensible objects, but can also be called for non-extensible objects. - * May abandon the array part if it is computed to be too sparse. - * - * This call is relatively expensive, as it needs to scan both the - * entries and the array part. - * - * The call may fail due to allocation error. - */ - -DUK_INTERNAL void duk_hobject_compact_props(duk_hthread *thr, duk_hobject *obj) { - duk_uint32_t e_size; /* currently used -> new size */ - duk_uint32_t a_size; /* currently required */ - duk_uint32_t a_used; /* actually used */ - duk_uint32_t h_size; - duk_bool_t abandon_array; - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(obj != NULL); - -#if defined(DUK_USE_ROM_OBJECTS) - if (DUK_HEAPHDR_HAS_READONLY((duk_heaphdr *) obj)) { - DUK_DD(DUK_DDPRINT("ignore attempt to compact a rom object")); - return; - } -#endif - - e_size = duk__count_used_e_keys(thr, obj); - duk__compute_a_stats(thr, obj, &a_used, &a_size); - - DUK_DD(DUK_DDPRINT("compacting hobject, used e keys %ld, used a keys %ld, min a size %ld, " - "resized array density would be: %ld/%ld = %lf", - (long) e_size, - (long) a_used, - (long) a_size, - (long) a_used, - (long) a_size, - (double) a_used / (double) a_size)); - - if (duk__abandon_array_density_check(a_used, a_size)) { - DUK_DD(DUK_DDPRINT("decided to abandon array during compaction, a_used=%ld, a_size=%ld", - (long) a_used, - (long) a_size)); - abandon_array = 1; - e_size += a_used; - a_size = 0; - } else { - DUK_DD(DUK_DDPRINT("decided to keep array during compaction")); - abandon_array = 0; - } - -#if defined(DUK_USE_HOBJECT_HASH_PART) - if (e_size >= DUK_USE_HOBJECT_HASH_PROP_LIMIT) { - h_size = duk__get_default_h_size(e_size); - } else { - h_size = 0; - } -#else - h_size = 0; -#endif - - DUK_DD(DUK_DDPRINT("compacting hobject -> new e_size %ld, new a_size=%ld, new h_size=%ld, abandon_array=%ld", - (long) e_size, - (long) a_size, - (long) h_size, - (long) abandon_array)); - - duk_hobject_realloc_props(thr, obj, e_size, a_size, h_size, abandon_array); -} - -/* - * Find an existing key from entry part either by linear scan or by - * using the hash index (if it exists). - * - * Sets entry index (and possibly the hash index) to output variables, - * which allows the caller to update the entry and hash entries in-place. - * If entry is not found, both values are set to -1. If entry is found - * but there is no hash part, h_idx is set to -1. - */ - -DUK_INTERNAL duk_bool_t -duk_hobject_find_entry(duk_heap *heap, duk_hobject *obj, duk_hstring *key, duk_int_t *e_idx, duk_int_t *h_idx) { - DUK_ASSERT(obj != NULL); - DUK_ASSERT(key != NULL); - DUK_ASSERT(e_idx != NULL); - DUK_ASSERT(h_idx != NULL); - DUK_UNREF(heap); - - if (DUK_LIKELY(DUK_HOBJECT_GET_HSIZE(obj) == 0)) { - /* Linear scan: more likely because most objects are small. - * This is an important fast path. - * - * XXX: this might be worth inlining for property lookups. - */ - duk_uint_fast32_t i; - duk_uint_fast32_t n; - duk_hstring **h_keys_base; - DUK_DDD(DUK_DDDPRINT("duk_hobject_find_entry() using linear scan for lookup")); - - h_keys_base = DUK_HOBJECT_E_GET_KEY_BASE(heap, obj); - n = DUK_HOBJECT_GET_ENEXT(obj); - for (i = 0; i < n; i++) { - if (h_keys_base[i] == key) { - *e_idx = (duk_int_t) i; - *h_idx = -1; - return 1; - } - } - } -#if defined(DUK_USE_HOBJECT_HASH_PART) - else { - /* hash lookup */ - duk_uint32_t n; - duk_uint32_t i, step; - duk_uint32_t *h_base; - duk_uint32_t mask; - - DUK_DDD(DUK_DDDPRINT("duk_hobject_find_entry() using hash part for lookup")); - - h_base = DUK_HOBJECT_H_GET_BASE(heap, obj); - n = DUK_HOBJECT_GET_HSIZE(obj); - mask = n - 1; - i = DUK_HSTRING_GET_HASH(key) & mask; - step = 1; /* Cache friendly but clustering prone. */ - - for (;;) { - duk_uint32_t t; - - DUK_ASSERT_DISABLE(i >= 0); /* unsigned */ - DUK_ASSERT(i < DUK_HOBJECT_GET_HSIZE(obj)); - t = h_base[i]; - DUK_ASSERT(t == DUK__HASH_UNUSED || t == DUK__HASH_DELETED || - (t < DUK_HOBJECT_GET_ESIZE(obj))); /* t >= 0 always true, unsigned */ - - if (t == DUK__HASH_UNUSED) { - break; - } else if (t == DUK__HASH_DELETED) { - DUK_DDD(DUK_DDDPRINT("lookup miss (deleted) i=%ld, t=%ld", (long) i, (long) t)); - } else { - DUK_ASSERT(t < DUK_HOBJECT_GET_ESIZE(obj)); - if (DUK_HOBJECT_E_GET_KEY(heap, obj, t) == key) { - DUK_DDD( - DUK_DDDPRINT("lookup hit i=%ld, t=%ld -> key %p", (long) i, (long) t, (void *) key)); - *e_idx = (duk_int_t) t; - *h_idx = (duk_int_t) i; - return 1; - } - DUK_DDD(DUK_DDDPRINT("lookup miss i=%ld, t=%ld", (long) i, (long) t)); - } - i = (i + step) & mask; - - /* Guaranteed to finish (hash is larger than #props). */ - } - } -#endif /* DUK_USE_HOBJECT_HASH_PART */ - - /* Not found, leave e_idx and h_idx unset. */ - return 0; -} - -/* For internal use: get non-accessor entry value */ -DUK_INTERNAL duk_tval *duk_hobject_find_entry_tval_ptr(duk_heap *heap, duk_hobject *obj, duk_hstring *key) { - duk_int_t e_idx; - duk_int_t h_idx; - - DUK_ASSERT(obj != NULL); - DUK_ASSERT(key != NULL); - DUK_UNREF(heap); - - if (duk_hobject_find_entry(heap, obj, key, &e_idx, &h_idx)) { - DUK_ASSERT(e_idx >= 0); - if (!DUK_HOBJECT_E_SLOT_IS_ACCESSOR(heap, obj, e_idx)) { - return DUK_HOBJECT_E_GET_VALUE_TVAL_PTR(heap, obj, e_idx); - } - } - return NULL; -} - -DUK_INTERNAL duk_tval *duk_hobject_find_entry_tval_ptr_stridx(duk_heap *heap, duk_hobject *obj, duk_small_uint_t stridx) { - return duk_hobject_find_entry_tval_ptr(heap, obj, DUK_HEAP_GET_STRING(heap, stridx)); -} - -/* For internal use: get non-accessor entry value and attributes */ -DUK_INTERNAL duk_tval *duk_hobject_find_entry_tval_ptr_and_attrs(duk_heap *heap, - duk_hobject *obj, - duk_hstring *key, - duk_uint_t *out_attrs) { - duk_int_t e_idx; - duk_int_t h_idx; - - DUK_ASSERT(obj != NULL); - DUK_ASSERT(key != NULL); - DUK_ASSERT(out_attrs != NULL); - DUK_UNREF(heap); - - if (duk_hobject_find_entry(heap, obj, key, &e_idx, &h_idx)) { - DUK_ASSERT(e_idx >= 0); - if (!DUK_HOBJECT_E_SLOT_IS_ACCESSOR(heap, obj, e_idx)) { - *out_attrs = DUK_HOBJECT_E_GET_FLAGS(heap, obj, e_idx); - return DUK_HOBJECT_E_GET_VALUE_TVAL_PTR(heap, obj, e_idx); - } - } - /* If not found, out_attrs is left unset. */ - return NULL; -} - -/* For internal use: get array part value */ -DUK_INTERNAL duk_tval *duk_hobject_find_array_entry_tval_ptr(duk_heap *heap, duk_hobject *obj, duk_uarridx_t i) { - duk_tval *tv; - - DUK_ASSERT(obj != NULL); - DUK_UNREF(heap); - - if (!DUK_HOBJECT_HAS_ARRAY_PART(obj)) { - return NULL; - } - if (i >= DUK_HOBJECT_GET_ASIZE(obj)) { - return NULL; - } - tv = DUK_HOBJECT_A_GET_VALUE_PTR(heap, obj, i); - return tv; -} - -/* - * Allocate and initialize a new entry, resizing the properties allocation - * if necessary. Returns entry index (e_idx) or throws an error if alloc fails. - * - * Sets the key of the entry (increasing the key's refcount), and updates - * the hash part if it exists. Caller must set value and flags, and update - * the entry value refcount. A decref for the previous value is not necessary. - */ - -DUK_LOCAL duk_int_t duk__hobject_alloc_entry_checked(duk_hthread *thr, duk_hobject *obj, duk_hstring *key) { - duk_uint32_t idx; - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(obj != NULL); - DUK_ASSERT(key != NULL); - DUK_ASSERT(DUK_HOBJECT_GET_ENEXT(obj) <= DUK_HOBJECT_GET_ESIZE(obj)); - -#if defined(DUK_USE_ASSERTIONS) - /* key must not already exist in entry part */ - { - duk_uint_fast32_t i; - for (i = 0; i < DUK_HOBJECT_GET_ENEXT(obj); i++) { - DUK_ASSERT(DUK_HOBJECT_E_GET_KEY(thr->heap, obj, i) != key); - } - } -#endif - - if (DUK_HOBJECT_GET_ENEXT(obj) >= DUK_HOBJECT_GET_ESIZE(obj)) { - /* only need to guarantee 1 more slot, but allocation growth is in chunks */ - DUK_DDD(DUK_DDDPRINT("entry part full, allocate space for one more entry")); - duk__grow_props_for_new_entry_item(thr, obj); - } - DUK_ASSERT(DUK_HOBJECT_GET_ENEXT(obj) < DUK_HOBJECT_GET_ESIZE(obj)); - idx = DUK_HOBJECT_POSTINC_ENEXT(obj); - - /* previous value is assumed to be garbage, so don't touch it */ - DUK_HOBJECT_E_SET_KEY(thr->heap, obj, idx, key); - DUK_HSTRING_INCREF(thr, key); - -#if defined(DUK_USE_HOBJECT_HASH_PART) - if (DUK_UNLIKELY(DUK_HOBJECT_GET_HSIZE(obj) > 0)) { - duk_uint32_t n, mask; - duk_uint32_t i, step; - duk_uint32_t *h_base = DUK_HOBJECT_H_GET_BASE(thr->heap, obj); - - n = DUK_HOBJECT_GET_HSIZE(obj); - mask = n - 1; - i = DUK_HSTRING_GET_HASH(key) & mask; - step = 1; /* Cache friendly but clustering prone. */ - - for (;;) { - duk_uint32_t t = h_base[i]; - if (t == DUK__HASH_UNUSED || t == DUK__HASH_DELETED) { - DUK_DDD(DUK_DDDPRINT("duk__hobject_alloc_entry_checked() inserted key into hash part, %ld -> %ld", - (long) i, - (long) idx)); - DUK_ASSERT_DISABLE(i >= 0); /* unsigned */ - DUK_ASSERT(i < DUK_HOBJECT_GET_HSIZE(obj)); - DUK_ASSERT_DISABLE(idx >= 0); - DUK_ASSERT(idx < DUK_HOBJECT_GET_ESIZE(obj)); - h_base[i] = idx; - break; - } - DUK_DDD(DUK_DDDPRINT("duk__hobject_alloc_entry_checked() miss %ld", (long) i)); - i = (i + step) & mask; - - /* Guaranteed to finish (hash is larger than #props). */ - } - } -#endif /* DUK_USE_HOBJECT_HASH_PART */ - - /* Note: we could return the hash index here too, but it's not - * needed right now. - */ - - DUK_ASSERT_DISABLE(idx >= 0); - DUK_ASSERT(idx < DUK_HOBJECT_GET_ESIZE(obj)); - DUK_ASSERT(idx < DUK_HOBJECT_GET_ENEXT(obj)); - return (duk_int_t) idx; -} - -/* - * Object internal value - * - * Returned value is guaranteed to be reachable / incref'd, caller does not need - * to incref OR decref. No proxies or accessors are invoked, no prototype walk. - */ - -DUK_INTERNAL duk_tval *duk_hobject_get_internal_value_tval_ptr(duk_heap *heap, duk_hobject *obj) { - return duk_hobject_find_entry_tval_ptr_stridx(heap, obj, DUK_STRIDX_INT_VALUE); -} - -DUK_LOCAL duk_heaphdr *duk_hobject_get_internal_value_heaphdr(duk_heap *heap, duk_hobject *obj) { - duk_tval *tv; - - DUK_ASSERT(heap != NULL); - DUK_ASSERT(obj != NULL); - - tv = duk_hobject_get_internal_value_tval_ptr(heap, obj); - if (tv != NULL) { - duk_heaphdr *h = DUK_TVAL_GET_HEAPHDR(tv); - DUK_ASSERT(h != NULL); - return h; - } - - return NULL; -} - -DUK_INTERNAL duk_hstring *duk_hobject_get_internal_value_string(duk_heap *heap, duk_hobject *obj) { - duk_hstring *h; - - h = (duk_hstring *) duk_hobject_get_internal_value_heaphdr(heap, obj); - if (h != NULL) { - DUK_ASSERT(DUK_HEAPHDR_IS_STRING((duk_heaphdr *) h)); - } - return h; -} - -DUK_LOCAL duk_hobject *duk__hobject_get_entry_object_stridx(duk_heap *heap, duk_hobject *obj, duk_small_uint_t stridx) { - duk_tval *tv; - duk_hobject *h; - - tv = duk_hobject_find_entry_tval_ptr_stridx(heap, obj, stridx); - if (tv != NULL && DUK_TVAL_IS_OBJECT(tv)) { - h = DUK_TVAL_GET_OBJECT(tv); - DUK_ASSERT(h != NULL); - return h; - } - return NULL; -} - -DUK_INTERNAL duk_harray *duk_hobject_get_formals(duk_hthread *thr, duk_hobject *obj) { - duk_harray *h; - - h = (duk_harray *) duk__hobject_get_entry_object_stridx(thr->heap, obj, DUK_STRIDX_INT_FORMALS); - if (h != NULL) { - DUK_ASSERT(DUK_HOBJECT_IS_ARRAY((duk_hobject *) h)); - DUK_ASSERT(h->length <= DUK_HOBJECT_GET_ASIZE((duk_hobject *) h)); - } - return h; -} - -DUK_INTERNAL duk_hobject *duk_hobject_get_varmap(duk_hthread *thr, duk_hobject *obj) { - duk_hobject *h; - - h = duk__hobject_get_entry_object_stridx(thr->heap, obj, DUK_STRIDX_INT_VARMAP); - return h; -} - -/* - * Arguments handling helpers (argument map mainly). - * - * An arguments object has exotic behavior for some numeric indices. - * Accesses may translate to identifier operations which may have - * arbitrary side effects (potentially invalidating any duk_tval - * pointers). - */ - -/* Lookup 'key' from arguments internal 'map', perform a variable lookup - * if mapped, and leave the result on top of stack (and return non-zero). - * Used in E5 Section 10.6 algorithms [[Get]] and [[GetOwnProperty]]. - */ -DUK_LOCAL -duk_bool_t duk__lookup_arguments_map(duk_hthread *thr, - duk_hobject *obj, - duk_hstring *key, - duk_propdesc *temp_desc, - duk_hobject **out_map, - duk_hobject **out_varenv) { - duk_hobject *map; - duk_hobject *varenv; - duk_bool_t rc; - - DUK_ASSERT_VALSTACK_SPACE(thr, DUK__VALSTACK_SPACE); - - DUK_DDD(DUK_DDDPRINT("arguments map lookup: thr=%p, obj=%p, key=%p, temp_desc=%p " - "(obj -> %!O, key -> %!O)", - (void *) thr, - (void *) obj, - (void *) key, - (void *) temp_desc, - (duk_heaphdr *) obj, - (duk_heaphdr *) key)); - - if (!duk_hobject_get_own_propdesc(thr, obj, DUK_HTHREAD_STRING_INT_MAP(thr), temp_desc, DUK_GETDESC_FLAG_PUSH_VALUE)) { - DUK_DDD(DUK_DDDPRINT("-> no 'map'")); - return 0; - } - - map = duk_require_hobject(thr, -1); - DUK_ASSERT(map != NULL); - duk_pop_unsafe(thr); /* map is reachable through obj */ - - if (!duk_hobject_get_own_propdesc(thr, map, key, temp_desc, DUK_GETDESC_FLAG_PUSH_VALUE)) { - DUK_DDD(DUK_DDDPRINT("-> 'map' exists, but key not in map")); - return 0; - } - - /* [... varname] */ - DUK_DDD(DUK_DDDPRINT("-> 'map' exists, and contains key, key is mapped to argument/variable binding %!T", - (duk_tval *) duk_get_tval(thr, -1))); - DUK_ASSERT(duk_is_string(thr, -1)); /* guaranteed when building arguments */ - - /* get varenv for varname (callee's declarative lexical environment) */ - rc = duk_hobject_get_own_propdesc(thr, obj, DUK_HTHREAD_STRING_INT_VARENV(thr), temp_desc, DUK_GETDESC_FLAG_PUSH_VALUE); - DUK_UNREF(rc); - DUK_ASSERT(rc != 0); /* arguments MUST have an initialized lexical environment reference */ - varenv = duk_require_hobject(thr, -1); - DUK_ASSERT(varenv != NULL); - duk_pop_unsafe(thr); /* varenv remains reachable through 'obj' */ - - DUK_DDD(DUK_DDDPRINT("arguments varenv is: %!dO", (duk_heaphdr *) varenv)); - - /* success: leave varname in stack */ - *out_map = map; - *out_varenv = varenv; - return 1; /* [... varname] */ -} - -/* Lookup 'key' from arguments internal 'map', and leave replacement value - * on stack top if mapped (and return non-zero). - * Used in E5 Section 10.6 algorithm for [[GetOwnProperty]] (used by [[Get]]). - */ -DUK_LOCAL duk_bool_t duk__check_arguments_map_for_get(duk_hthread *thr, - duk_hobject *obj, - duk_hstring *key, - duk_propdesc *temp_desc) { - duk_hobject *map; - duk_hobject *varenv; - duk_hstring *varname; - - DUK_ASSERT_VALSTACK_SPACE(thr, DUK__VALSTACK_SPACE); - - if (!duk__lookup_arguments_map(thr, obj, key, temp_desc, &map, &varenv)) { - DUK_DDD(DUK_DDDPRINT("arguments: key not mapped, no exotic get behavior")); - return 0; - } - - /* [... varname] */ - - varname = duk_require_hstring(thr, -1); - DUK_ASSERT(varname != NULL); - duk_pop_unsafe(thr); /* varname is still reachable */ - - DUK_DDD(DUK_DDDPRINT("arguments object automatic getvar for a bound variable; " - "key=%!O, varname=%!O", - (duk_heaphdr *) key, - (duk_heaphdr *) varname)); - - (void) duk_js_getvar_envrec(thr, varenv, varname, 1 /*throw*/); - - /* [... value this_binding] */ - - duk_pop_unsafe(thr); - - /* leave result on stack top */ - return 1; -} - -/* Lookup 'key' from arguments internal 'map', perform a variable write if mapped. - * Used in E5 Section 10.6 algorithm for [[DefineOwnProperty]] (used by [[Put]]). - * Assumes stack top contains 'put' value (which is NOT popped). - */ -DUK_LOCAL void duk__check_arguments_map_for_put(duk_hthread *thr, - duk_hobject *obj, - duk_hstring *key, - duk_propdesc *temp_desc, - duk_bool_t throw_flag) { - duk_hobject *map; - duk_hobject *varenv; - duk_hstring *varname; - - DUK_ASSERT_VALSTACK_SPACE(thr, DUK__VALSTACK_SPACE); - - if (!duk__lookup_arguments_map(thr, obj, key, temp_desc, &map, &varenv)) { - DUK_DDD(DUK_DDDPRINT("arguments: key not mapped, no exotic put behavior")); - return; - } - - /* [... put_value varname] */ - - varname = duk_require_hstring(thr, -1); - DUK_ASSERT(varname != NULL); - duk_pop_unsafe(thr); /* varname is still reachable */ - - DUK_DDD(DUK_DDDPRINT("arguments object automatic putvar for a bound variable; " - "key=%!O, varname=%!O, value=%!T", - (duk_heaphdr *) key, - (duk_heaphdr *) varname, - (duk_tval *) duk_require_tval(thr, -1))); - - /* [... put_value] */ - - /* - * Note: although arguments object variable mappings are only established - * for non-strict functions (and a call to a non-strict function created - * the arguments object in question), an inner strict function may be doing - * the actual property write. Hence the throw_flag applied here comes from - * the property write call. - */ - - duk_js_putvar_envrec(thr, varenv, varname, duk_require_tval(thr, -1), throw_flag); - - /* [... put_value] */ -} - -/* Lookup 'key' from arguments internal 'map', delete mapping if found. - * Used in E5 Section 10.6 algorithm for [[Delete]]. Note that the - * variable/argument itself (where the map points) is not deleted. - */ -DUK_LOCAL void duk__check_arguments_map_for_delete(duk_hthread *thr, duk_hobject *obj, duk_hstring *key, duk_propdesc *temp_desc) { - duk_hobject *map; - - DUK_ASSERT_VALSTACK_SPACE(thr, DUK__VALSTACK_SPACE); - - if (!duk_hobject_get_own_propdesc(thr, obj, DUK_HTHREAD_STRING_INT_MAP(thr), temp_desc, DUK_GETDESC_FLAG_PUSH_VALUE)) { - DUK_DDD(DUK_DDDPRINT("arguments: key not mapped, no exotic delete behavior")); - return; - } - - map = duk_require_hobject(thr, -1); - DUK_ASSERT(map != NULL); - duk_pop_unsafe(thr); /* map is reachable through obj */ - - DUK_DDD(DUK_DDDPRINT("-> have 'map', delete key %!O from map (if exists)); ignore result", (duk_heaphdr *) key)); - - /* Note: no recursion issue, we can trust 'map' to behave */ - DUK_ASSERT(!DUK_HOBJECT_HAS_EXOTIC_BEHAVIOR(map)); - DUK_DDD(DUK_DDDPRINT("map before deletion: %!O", (duk_heaphdr *) map)); - (void) duk_hobject_delprop_raw(thr, map, key, 0); /* ignore result */ - DUK_DDD(DUK_DDDPRINT("map after deletion: %!O", (duk_heaphdr *) map)); -} - -/* - * ECMAScript compliant [[GetOwnProperty]](P), for internal use only. - * - * If property is found: - * - Fills descriptor fields to 'out_desc' - * - If DUK_GETDESC_FLAG_PUSH_VALUE is set, pushes a value related to the - * property onto the stack ('undefined' for accessor properties). - * - Returns non-zero - * - * If property is not found: - * - 'out_desc' is left in untouched state (possibly garbage) - * - Nothing is pushed onto the stack (not even with DUK_GETDESC_FLAG_PUSH_VALUE - * set) - * - Returns zero - * - * Notes: - * - * - Getting a property descriptor may cause an allocation (and hence - * GC) to take place, hence reachability and refcount of all related - * values matter. Reallocation of value stack, properties, etc may - * invalidate many duk_tval pointers (concretely, those which reside - * in memory areas subject to reallocation). However, heap object - * pointers are never affected (heap objects have stable pointers). - * - * - The value of a plain property is always reachable and has a non-zero - * reference count. - * - * - The value of a virtual property is not necessarily reachable from - * elsewhere and may have a refcount of zero. Hence we push it onto - * the valstack for the caller, which ensures it remains reachable - * while it is needed. - * - * - There are no virtual accessor properties. Hence, all getters and - * setters are always related to concretely stored properties, which - * ensures that the get/set functions in the resulting descriptor are - * reachable and have non-zero refcounts. Should there be virtual - * accessor properties later, this would need to change. - */ - -DUK_LOCAL duk_bool_t duk__get_own_propdesc_raw(duk_hthread *thr, - duk_hobject *obj, - duk_hstring *key, - duk_uint32_t arr_idx, - duk_propdesc *out_desc, - duk_small_uint_t flags) { - duk_tval *tv; - - DUK_DDD(DUK_DDDPRINT("duk_hobject_get_own_propdesc: thr=%p, obj=%p, key=%p, out_desc=%p, flags=%lx, " - "arr_idx=%ld (obj -> %!O, key -> %!O)", - (void *) thr, - (void *) obj, - (void *) key, - (void *) out_desc, - (long) flags, - (long) arr_idx, - (duk_heaphdr *) obj, - (duk_heaphdr *) key)); - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(thr->heap != NULL); - DUK_ASSERT(obj != NULL); - DUK_ASSERT(key != NULL); - DUK_ASSERT(out_desc != NULL); - DUK_ASSERT_VALSTACK_SPACE(thr, DUK__VALSTACK_SPACE); - - DUK_STATS_INC(thr->heap, stats_getownpropdesc_count); - - /* Each code path returning 1 (= found) must fill in all the output - * descriptor fields. We don't do it beforehand because it'd be - * unnecessary work if the property isn't found and would happen - * multiple times for an inheritance chain. - */ - DUK_ASSERT_SET_GARBAGE(out_desc, sizeof(*out_desc)); -#if 0 - out_desc->flags = 0; - out_desc->get = NULL; - out_desc->set = NULL; - out_desc->e_idx = -1; - out_desc->h_idx = -1; - out_desc->a_idx = -1; -#endif - - /* - * Try entries part first because it's the common case. - * - * Array part lookups are usually handled by the array fast path, and - * are not usually inherited. Array and entry parts never contain the - * same keys so the entry part vs. array part order doesn't matter. - */ - - if (duk_hobject_find_entry(thr->heap, obj, key, &out_desc->e_idx, &out_desc->h_idx)) { - duk_int_t e_idx = out_desc->e_idx; - DUK_ASSERT(out_desc->e_idx >= 0); - out_desc->a_idx = -1; - out_desc->flags = DUK_HOBJECT_E_GET_FLAGS(thr->heap, obj, e_idx); - out_desc->get = NULL; - out_desc->set = NULL; - if (DUK_UNLIKELY(out_desc->flags & DUK_PROPDESC_FLAG_ACCESSOR)) { - DUK_DDD(DUK_DDDPRINT("-> found accessor property in entry part")); - out_desc->get = DUK_HOBJECT_E_GET_VALUE_GETTER(thr->heap, obj, e_idx); - out_desc->set = DUK_HOBJECT_E_GET_VALUE_SETTER(thr->heap, obj, e_idx); - if (flags & DUK_GETDESC_FLAG_PUSH_VALUE) { - /* a dummy undefined value is pushed to make valstack - * behavior uniform for caller - */ - duk_push_undefined(thr); - } - } else { - DUK_DDD(DUK_DDDPRINT("-> found plain property in entry part")); - tv = DUK_HOBJECT_E_GET_VALUE_TVAL_PTR(thr->heap, obj, e_idx); - if (flags & DUK_GETDESC_FLAG_PUSH_VALUE) { - duk_push_tval(thr, tv); - } - } - goto prop_found; - } - - /* - * Try array part. - */ - - if (DUK_HOBJECT_HAS_ARRAY_PART(obj) && arr_idx != DUK__NO_ARRAY_INDEX) { - if (arr_idx < DUK_HOBJECT_GET_ASIZE(obj)) { - tv = DUK_HOBJECT_A_GET_VALUE_PTR(thr->heap, obj, arr_idx); - if (!DUK_TVAL_IS_UNUSED(tv)) { - DUK_DDD(DUK_DDDPRINT("-> found in array part")); - if (flags & DUK_GETDESC_FLAG_PUSH_VALUE) { - duk_push_tval(thr, tv); - } - /* implicit attributes */ - out_desc->flags = - DUK_PROPDESC_FLAG_WRITABLE | DUK_PROPDESC_FLAG_CONFIGURABLE | DUK_PROPDESC_FLAG_ENUMERABLE; - out_desc->get = NULL; - out_desc->set = NULL; - out_desc->e_idx = -1; - out_desc->h_idx = -1; - out_desc->a_idx = (duk_int_t) arr_idx; /* XXX: limit 2G due to being signed */ - goto prop_found; - } - } - } - - DUK_DDD(DUK_DDDPRINT("-> not found as a concrete property")); - - /* - * Not found as a concrete property, check for virtual properties. - */ - - if (!DUK_HOBJECT_HAS_VIRTUAL_PROPERTIES(obj)) { - /* Quick skip. */ - goto prop_not_found; - } - - if (DUK_HOBJECT_HAS_EXOTIC_ARRAY(obj)) { - duk_harray *a; - - DUK_DDD(DUK_DDDPRINT("array object exotic property get for key: %!O, arr_idx: %ld", - (duk_heaphdr *) key, - (long) arr_idx)); - - a = (duk_harray *) obj; - DUK_HARRAY_ASSERT_VALID(a); - - if (key == DUK_HTHREAD_STRING_LENGTH(thr)) { - DUK_DDD(DUK_DDDPRINT("-> found, key is 'length', length exotic behavior")); - - if (flags & DUK_GETDESC_FLAG_PUSH_VALUE) { - duk_push_uint(thr, (duk_uint_t) a->length); - } - out_desc->flags = DUK_PROPDESC_FLAG_VIRTUAL; - if (DUK_HARRAY_LENGTH_WRITABLE(a)) { - out_desc->flags |= DUK_PROPDESC_FLAG_WRITABLE; - } - out_desc->get = NULL; - out_desc->set = NULL; - out_desc->e_idx = -1; - out_desc->h_idx = -1; - out_desc->a_idx = -1; - - DUK_ASSERT(!DUK_HOBJECT_HAS_EXOTIC_ARGUMENTS(obj)); - goto prop_found_noexotic; /* cannot be arguments exotic */ - } - } else if (DUK_HOBJECT_HAS_EXOTIC_STRINGOBJ(obj)) { - DUK_DDD(DUK_DDDPRINT("string object exotic property get for key: %!O, arr_idx: %ld", - (duk_heaphdr *) key, - (long) arr_idx)); - - /* XXX: charlen; avoid multiple lookups? */ - - if (arr_idx != DUK__NO_ARRAY_INDEX) { - duk_hstring *h_val; - - DUK_DDD(DUK_DDDPRINT("array index exists")); - - h_val = duk_hobject_get_internal_value_string(thr->heap, obj); - DUK_ASSERT(h_val); - if (arr_idx < DUK_HSTRING_GET_CHARLEN(h_val)) { - DUK_DDD(DUK_DDDPRINT("-> found, array index inside string")); - if (flags & DUK_GETDESC_FLAG_PUSH_VALUE) { - duk_push_hstring(thr, h_val); - duk_substring(thr, -1, arr_idx, arr_idx + 1); /* [str] -> [substr] */ - } - out_desc->flags = DUK_PROPDESC_FLAG_ENUMERABLE | /* E5 Section 15.5.5.2 */ - DUK_PROPDESC_FLAG_VIRTUAL; - out_desc->get = NULL; - out_desc->set = NULL; - out_desc->e_idx = -1; - out_desc->h_idx = -1; - out_desc->a_idx = -1; - - DUK_ASSERT(!DUK_HOBJECT_HAS_EXOTIC_ARGUMENTS(obj)); - goto prop_found_noexotic; /* cannot be arguments exotic */ - } else { - /* index is above internal string length -> property is fully normal */ - DUK_DDD(DUK_DDDPRINT("array index outside string -> normal property")); - } - } else if (key == DUK_HTHREAD_STRING_LENGTH(thr)) { - duk_hstring *h_val; - - DUK_DDD(DUK_DDDPRINT("-> found, key is 'length', length exotic behavior")); - - h_val = duk_hobject_get_internal_value_string(thr->heap, obj); - DUK_ASSERT(h_val != NULL); - if (flags & DUK_GETDESC_FLAG_PUSH_VALUE) { - duk_push_uint(thr, (duk_uint_t) DUK_HSTRING_GET_CHARLEN(h_val)); - } - out_desc->flags = DUK_PROPDESC_FLAG_VIRTUAL; /* E5 Section 15.5.5.1 */ - out_desc->get = NULL; - out_desc->set = NULL; - out_desc->e_idx = -1; - out_desc->h_idx = -1; - out_desc->a_idx = -1; - - DUK_ASSERT(!DUK_HOBJECT_HAS_EXOTIC_ARGUMENTS(obj)); - goto prop_found_noexotic; /* cannot be arguments exotic */ - } - } -#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) - else if (DUK_HOBJECT_IS_BUFOBJ(obj)) { - duk_hbufobj *h_bufobj; - duk_uint_t byte_off; - duk_small_uint_t elem_size; - - h_bufobj = (duk_hbufobj *) obj; - DUK_HBUFOBJ_ASSERT_VALID(h_bufobj); - DUK_DDD(DUK_DDDPRINT("bufobj property get for key: %!O, arr_idx: %ld", (duk_heaphdr *) key, (long) arr_idx)); - - if (arr_idx != DUK__NO_ARRAY_INDEX && DUK_HBUFOBJ_HAS_VIRTUAL_INDICES(h_bufobj)) { - DUK_DDD(DUK_DDDPRINT("array index exists")); - - /* Careful with wrapping: arr_idx upshift may easily wrap, whereas - * length downshift won't. - */ - if (arr_idx < (h_bufobj->length >> h_bufobj->shift)) { - byte_off = arr_idx << h_bufobj->shift; /* no wrap assuming h_bufobj->length is valid */ - elem_size = (duk_small_uint_t) (1U << h_bufobj->shift); - if (flags & DUK_GETDESC_FLAG_PUSH_VALUE) { - duk_uint8_t *data; - - if (h_bufobj->buf != NULL && - DUK_HBUFOBJ_VALID_BYTEOFFSET_EXCL(h_bufobj, byte_off + elem_size)) { - data = (duk_uint8_t *) DUK_HBUFFER_GET_DATA_PTR(thr->heap, h_bufobj->buf) + - h_bufobj->offset + byte_off; - duk_hbufobj_push_validated_read(thr, h_bufobj, data, elem_size); - } else { - DUK_D(DUK_DPRINT("bufobj access out of underlying buffer, ignoring (read zero)")); - duk_push_uint(thr, 0); - } - } - out_desc->flags = DUK_PROPDESC_FLAG_WRITABLE | DUK_PROPDESC_FLAG_VIRTUAL; - if (DUK_HOBJECT_GET_CLASS_NUMBER(obj) != DUK_HOBJECT_CLASS_ARRAYBUFFER) { - /* ArrayBuffer indices are non-standard and are - * non-enumerable to avoid their serialization. - */ - out_desc->flags |= DUK_PROPDESC_FLAG_ENUMERABLE; - } - out_desc->get = NULL; - out_desc->set = NULL; - out_desc->e_idx = -1; - out_desc->h_idx = -1; - out_desc->a_idx = -1; - - DUK_ASSERT(!DUK_HOBJECT_HAS_EXOTIC_ARGUMENTS(obj)); - goto prop_found_noexotic; /* cannot be e.g. arguments exotic, since exotic 'traits' are mutually - exclusive */ - } else { - /* index is above internal buffer length -> property is fully normal */ - DUK_DDD(DUK_DDDPRINT("array index outside buffer -> normal property")); - } - } else if (key == DUK_HTHREAD_STRING_LENGTH(thr) && DUK_HBUFOBJ_HAS_VIRTUAL_INDICES(h_bufobj)) { - DUK_DDD(DUK_DDDPRINT("-> found, key is 'length', length exotic behavior")); - - if (flags & DUK_GETDESC_FLAG_PUSH_VALUE) { - /* Length in elements: take into account shift, but - * intentionally don't check the underlying buffer here. - */ - duk_push_uint(thr, h_bufobj->length >> h_bufobj->shift); - } - out_desc->flags = DUK_PROPDESC_FLAG_VIRTUAL; - out_desc->get = NULL; - out_desc->set = NULL; - out_desc->e_idx = -1; - out_desc->h_idx = -1; - out_desc->a_idx = -1; - - DUK_ASSERT(!DUK_HOBJECT_HAS_EXOTIC_ARGUMENTS(obj)); - goto prop_found_noexotic; /* cannot be arguments exotic */ - } - } -#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ - - /* Array properties have exotic behavior but they are concrete, - * so no special handling here. - * - * Arguments exotic behavior (E5 Section 10.6, [[GetOwnProperty]] - * is only relevant as a post-check implemented below; hence no - * check here. - */ - - /* - * Not found as concrete or virtual. - */ - -prop_not_found: - DUK_DDD(DUK_DDDPRINT("-> not found (virtual, entry part, or array part)")); - DUK_STATS_INC(thr->heap, stats_getownpropdesc_miss); - return 0; - - /* - * Found. - * - * Arguments object has exotic post-processing, see E5 Section 10.6, - * description of [[GetOwnProperty]] variant for arguments. - */ - -prop_found: - DUK_DDD(DUK_DDDPRINT("-> property found, checking for arguments exotic post-behavior")); - - /* Notes: - * - Only numbered indices are relevant, so arr_idx fast reject is good - * (this is valid unless there are more than 4**32-1 arguments). - * - Since variable lookup has no side effects, this can be skipped if - * DUK_GETDESC_FLAG_PUSH_VALUE is not set. - */ - - if (DUK_UNLIKELY(DUK_HOBJECT_HAS_EXOTIC_ARGUMENTS(obj) && arr_idx != DUK__NO_ARRAY_INDEX && - (flags & DUK_GETDESC_FLAG_PUSH_VALUE))) { - duk_propdesc temp_desc; - - /* Magically bound variable cannot be an accessor. However, - * there may be an accessor property (or a plain property) in - * place with magic behavior removed. This happens e.g. when - * a magic property is redefined with defineProperty(). - * Cannot assert for "not accessor" here. - */ - - /* replaces top of stack with new value if necessary */ - DUK_ASSERT((flags & DUK_GETDESC_FLAG_PUSH_VALUE) != 0); - - /* This can perform a variable lookup but only into a declarative - * environment which has no side effects. - */ - if (duk__check_arguments_map_for_get(thr, obj, key, &temp_desc)) { - DUK_DDD(DUK_DDDPRINT("-> arguments exotic behavior overrides result: %!T -> %!T", - (duk_tval *) duk_get_tval(thr, -2), - (duk_tval *) duk_get_tval(thr, -1))); - /* [... old_result result] -> [... result] */ - duk_remove_m2(thr); - } - } - -prop_found_noexotic: - DUK_STATS_INC(thr->heap, stats_getownpropdesc_hit); - return 1; -} - -DUK_INTERNAL duk_bool_t -duk_hobject_get_own_propdesc(duk_hthread *thr, duk_hobject *obj, duk_hstring *key, duk_propdesc *out_desc, duk_small_uint_t flags) { - DUK_ASSERT(thr != NULL); - DUK_ASSERT(obj != NULL); - DUK_ASSERT(key != NULL); - DUK_ASSERT(out_desc != NULL); - DUK_ASSERT_VALSTACK_SPACE(thr, DUK__VALSTACK_SPACE); - - return duk__get_own_propdesc_raw(thr, obj, key, DUK_HSTRING_GET_ARRIDX_SLOW(key), out_desc, flags); -} - -/* - * ECMAScript compliant [[GetProperty]](P), for internal use only. - * - * If property is found: - * - Fills descriptor fields to 'out_desc' - * - If DUK_GETDESC_FLAG_PUSH_VALUE is set, pushes a value related to the - * property onto the stack ('undefined' for accessor properties). - * - Returns non-zero - * - * If property is not found: - * - 'out_desc' is left in untouched state (possibly garbage) - * - Nothing is pushed onto the stack (not even with DUK_GETDESC_FLAG_PUSH_VALUE - * set) - * - Returns zero - * - * May cause arbitrary side effects and invalidate (most) duk_tval - * pointers. - */ - -DUK_LOCAL duk_bool_t -duk__get_propdesc(duk_hthread *thr, duk_hobject *obj, duk_hstring *key, duk_propdesc *out_desc, duk_small_uint_t flags) { - duk_hobject *curr; - duk_uint32_t arr_idx; - duk_uint_t sanity; - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(thr->heap != NULL); - DUK_ASSERT(obj != NULL); - DUK_ASSERT(key != NULL); - DUK_ASSERT(out_desc != NULL); - DUK_ASSERT_VALSTACK_SPACE(thr, DUK__VALSTACK_SPACE); - - DUK_STATS_INC(thr->heap, stats_getpropdesc_count); - - arr_idx = DUK_HSTRING_GET_ARRIDX_FAST(key); - - DUK_DDD(DUK_DDDPRINT("duk__get_propdesc: thr=%p, obj=%p, key=%p, out_desc=%p, flags=%lx, " - "arr_idx=%ld (obj -> %!O, key -> %!O)", - (void *) thr, - (void *) obj, - (void *) key, - (void *) out_desc, - (long) flags, - (long) arr_idx, - (duk_heaphdr *) obj, - (duk_heaphdr *) key)); - - curr = obj; - DUK_ASSERT(curr != NULL); - sanity = DUK_HOBJECT_PROTOTYPE_CHAIN_SANITY; - do { - if (duk__get_own_propdesc_raw(thr, curr, key, arr_idx, out_desc, flags)) { - /* stack contains value (if requested), 'out_desc' is set */ - DUK_STATS_INC(thr->heap, stats_getpropdesc_hit); - return 1; - } - - /* not found in 'curr', next in prototype chain; impose max depth */ - if (DUK_UNLIKELY(sanity-- == 0)) { - if (flags & DUK_GETDESC_FLAG_IGNORE_PROTOLOOP) { - /* treat like property not found */ - break; - } else { - DUK_ERROR_RANGE(thr, DUK_STR_PROTOTYPE_CHAIN_LIMIT); - DUK_WO_NORETURN(return 0;); - } - } - curr = DUK_HOBJECT_GET_PROTOTYPE(thr->heap, curr); - } while (curr != NULL); - - /* out_desc is left untouched (possibly garbage), caller must use return - * value to determine whether out_desc can be looked up - */ - - DUK_STATS_INC(thr->heap, stats_getpropdesc_miss); - return 0; -} - -/* - * Shallow fast path checks for accessing array elements with numeric - * indices. The goal is to try to avoid coercing an array index to an - * (interned) string for the most common lookups, in particular, for - * standard Array objects. - * - * Interning is avoided but only for a very narrow set of cases: - * - Object has array part, index is within array allocation, and - * value is not unused (= key exists) - * - Object has no interfering exotic behavior (e.g. arguments or - * string object exotic behaviors interfere, array exotic - * behavior does not). - * - * Current shortcoming: if key does not exist (even if it is within - * the array allocation range) a slow path lookup with interning is - * always required. This can probably be fixed so that there is a - * quick fast path for non-existent elements as well, at least for - * standard Array objects. - */ - -#if defined(DUK_USE_ARRAY_PROP_FASTPATH) -DUK_LOCAL duk_tval *duk__getprop_shallow_fastpath_array_tval(duk_hthread *thr, duk_hobject *obj, duk_tval *tv_key) { - duk_tval *tv; - duk_uint32_t idx; - - DUK_UNREF(thr); - - if (!(DUK_HOBJECT_HAS_ARRAY_PART(obj) && !DUK_HOBJECT_HAS_EXOTIC_ARGUMENTS(obj) && !DUK_HOBJECT_HAS_EXOTIC_STRINGOBJ(obj) && - !DUK_HOBJECT_IS_BUFOBJ(obj) && !DUK_HOBJECT_IS_PROXY(obj))) { - /* Must have array part and no conflicting exotic behaviors. - * Doesn't need to have array special behavior, e.g. Arguments - * object has array part. - */ - return NULL; - } - - /* Arrays never have other exotic behaviors. */ - - DUK_DDD(DUK_DDDPRINT("fast path attempt (no exotic string/arguments/buffer " - "behavior, object has array part)")); - -#if defined(DUK_USE_FASTINT) - if (DUK_TVAL_IS_FASTINT(tv_key)) { - idx = duk__tval_fastint_to_arr_idx(tv_key); - } else -#endif - if (DUK_TVAL_IS_DOUBLE(tv_key)) { - idx = duk__tval_number_to_arr_idx(tv_key); - } else { - DUK_DDD(DUK_DDDPRINT("key is not a number")); - return NULL; - } - - /* If index is not valid, idx will be DUK__NO_ARRAY_INDEX which - * is 0xffffffffUL. We don't need to check for that explicitly - * because 0xffffffffUL will never be inside object 'a_size'. - */ - - if (idx >= DUK_HOBJECT_GET_ASIZE(obj)) { - DUK_DDD(DUK_DDDPRINT("key is not an array index or outside array part")); - return NULL; - } - DUK_ASSERT(idx != 0xffffffffUL); - DUK_ASSERT(idx != DUK__NO_ARRAY_INDEX); - - /* XXX: for array instances we could take a shortcut here and assume - * Array.prototype doesn't contain an array index property. - */ - - DUK_DDD(DUK_DDDPRINT("key is a valid array index and inside array part")); - tv = DUK_HOBJECT_A_GET_VALUE_PTR(thr->heap, obj, idx); - if (!DUK_TVAL_IS_UNUSED(tv)) { - DUK_DDD(DUK_DDDPRINT("-> fast path successful")); - return tv; - } - - DUK_DDD(DUK_DDDPRINT("fast path attempt failed, fall back to slow path")); - return NULL; -} - -DUK_LOCAL duk_bool_t duk__putprop_shallow_fastpath_array_tval(duk_hthread *thr, - duk_hobject *obj, - duk_tval *tv_key, - duk_tval *tv_val) { - duk_tval *tv; - duk_harray *a; - duk_uint32_t idx; - duk_uint32_t old_len, new_len; - - if (!(DUK_HOBJECT_HAS_EXOTIC_ARRAY(obj) && DUK_HOBJECT_HAS_ARRAY_PART(obj) && DUK_HOBJECT_HAS_EXTENSIBLE(obj))) { - return 0; - } - DUK_ASSERT(!DUK_HEAPHDR_HAS_READONLY((duk_heaphdr *) obj)); /* caller ensures */ - - a = (duk_harray *) obj; - DUK_HARRAY_ASSERT_VALID(a); - -#if defined(DUK_USE_FASTINT) - if (DUK_TVAL_IS_FASTINT(tv_key)) { - idx = duk__tval_fastint_to_arr_idx(tv_key); - } else -#endif - if (DUK_TVAL_IS_DOUBLE(tv_key)) { - idx = duk__tval_number_to_arr_idx(tv_key); - } else { - DUK_DDD(DUK_DDDPRINT("key is not a number")); - return 0; - } - - /* If index is not valid, idx will be DUK__NO_ARRAY_INDEX which - * is 0xffffffffUL. We don't need to check for that explicitly - * because 0xffffffffUL will never be inside object 'a_size'. - */ - - if (idx >= DUK_HOBJECT_GET_ASIZE(obj)) { /* for resizing of array part, use slow path */ - return 0; - } - DUK_ASSERT(idx != 0xffffffffUL); - DUK_ASSERT(idx != DUK__NO_ARRAY_INDEX); - - old_len = a->length; - - if (idx >= old_len) { - DUK_DDD(DUK_DDDPRINT("write new array entry requires length update " - "(arr_idx=%ld, old_len=%ld)", - (long) idx, - (long) old_len)); - if (DUK_HARRAY_LENGTH_NONWRITABLE(a)) { - /* The correct behavior here is either a silent error - * or a TypeError, depending on strictness. Fall back - * to the slow path to handle the situation. - */ - return 0; - } - new_len = idx + 1; - - ((duk_harray *) obj)->length = new_len; - } - - tv = DUK_HOBJECT_A_GET_VALUE_PTR(thr->heap, obj, idx); - DUK_TVAL_SET_TVAL_UPDREF(thr, tv, tv_val); /* side effects */ - - DUK_DDD(DUK_DDDPRINT("array fast path success for index %ld", (long) idx)); - return 1; -} -#endif /* DUK_USE_ARRAY_PROP_FASTPATH */ - -/* - * Fast path for bufobj getprop/putprop - */ - -#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) -DUK_LOCAL duk_bool_t duk__getprop_fastpath_bufobj_tval(duk_hthread *thr, duk_hobject *obj, duk_tval *tv_key) { - duk_uint32_t idx; - duk_hbufobj *h_bufobj; - duk_uint_t byte_off; - duk_small_uint_t elem_size; - duk_uint8_t *data; - - if (!DUK_HOBJECT_IS_BUFOBJ(obj)) { - return 0; - } - h_bufobj = (duk_hbufobj *) obj; - if (!DUK_HBUFOBJ_HAS_VIRTUAL_INDICES(h_bufobj)) { - return 0; - } - -#if defined(DUK_USE_FASTINT) - if (DUK_TVAL_IS_FASTINT(tv_key)) { - idx = duk__tval_fastint_to_arr_idx(tv_key); - } else -#endif - if (DUK_TVAL_IS_DOUBLE(tv_key)) { - idx = duk__tval_number_to_arr_idx(tv_key); - } else { - return 0; - } - - /* If index is not valid, idx will be DUK__NO_ARRAY_INDEX which - * is 0xffffffffUL. We don't need to check for that explicitly - * because 0xffffffffUL will never be inside bufobj length. - */ - - /* Careful with wrapping (left shifting idx would be unsafe). */ - if (idx >= (h_bufobj->length >> h_bufobj->shift)) { - return 0; - } - DUK_ASSERT(idx != DUK__NO_ARRAY_INDEX); - - byte_off = idx << h_bufobj->shift; /* no wrap assuming h_bufobj->length is valid */ - elem_size = (duk_small_uint_t) (1U << h_bufobj->shift); - - if (h_bufobj->buf != NULL && DUK_HBUFOBJ_VALID_BYTEOFFSET_EXCL(h_bufobj, byte_off + elem_size)) { - data = (duk_uint8_t *) DUK_HBUFFER_GET_DATA_PTR(thr->heap, h_bufobj->buf) + h_bufobj->offset + byte_off; - duk_hbufobj_push_validated_read(thr, h_bufobj, data, elem_size); - } else { - DUK_D(DUK_DPRINT("bufobj access out of underlying buffer, ignoring (read zero)")); - duk_push_uint(thr, 0); - } - - return 1; -} -#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ - -#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) -DUK_LOCAL duk_bool_t duk__putprop_fastpath_bufobj_tval(duk_hthread *thr, duk_hobject *obj, duk_tval *tv_key, duk_tval *tv_val) { - duk_uint32_t idx; - duk_hbufobj *h_bufobj; - duk_uint_t byte_off; - duk_small_uint_t elem_size; - duk_uint8_t *data; - - if (!(DUK_HOBJECT_IS_BUFOBJ(obj) && DUK_TVAL_IS_NUMBER(tv_val))) { - return 0; - } - DUK_ASSERT(!DUK_HEAPHDR_HAS_READONLY((duk_heaphdr *) obj)); /* caller ensures; rom objects are never bufobjs now */ - - h_bufobj = (duk_hbufobj *) obj; - if (!DUK_HBUFOBJ_HAS_VIRTUAL_INDICES(h_bufobj)) { - return 0; - } - -#if defined(DUK_USE_FASTINT) - if (DUK_TVAL_IS_FASTINT(tv_key)) { - idx = duk__tval_fastint_to_arr_idx(tv_key); - } else -#endif - if (DUK_TVAL_IS_DOUBLE(tv_key)) { - idx = duk__tval_number_to_arr_idx(tv_key); - } else { - return 0; - } - - /* If index is not valid, idx will be DUK__NO_ARRAY_INDEX which - * is 0xffffffffUL. We don't need to check for that explicitly - * because 0xffffffffUL will never be inside bufobj length. - */ - - /* Careful with wrapping (left shifting idx would be unsafe). */ - if (idx >= (h_bufobj->length >> h_bufobj->shift)) { - return 0; - } - DUK_ASSERT(idx != DUK__NO_ARRAY_INDEX); - - byte_off = idx << h_bufobj->shift; /* no wrap assuming h_bufobj->length is valid */ - elem_size = (duk_small_uint_t) (1U << h_bufobj->shift); - - /* Value is required to be a number in the fast path so there - * are no side effects in write coercion. - */ - duk_push_tval(thr, tv_val); - DUK_ASSERT(duk_is_number(thr, -1)); - - if (h_bufobj->buf != NULL && DUK_HBUFOBJ_VALID_BYTEOFFSET_EXCL(h_bufobj, byte_off + elem_size)) { - data = (duk_uint8_t *) DUK_HBUFFER_GET_DATA_PTR(thr->heap, h_bufobj->buf) + h_bufobj->offset + byte_off; - duk_hbufobj_validated_write(thr, h_bufobj, data, elem_size); - } else { - DUK_D(DUK_DPRINT("bufobj access out of underlying buffer, ignoring (write skipped)")); - } - - duk_pop_unsafe(thr); - return 1; -} -#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ - -/* - * GETPROP: ECMAScript property read. - */ - -DUK_INTERNAL duk_bool_t duk_hobject_getprop(duk_hthread *thr, duk_tval *tv_obj, duk_tval *tv_key) { - duk_tval tv_obj_copy; - duk_tval tv_key_copy; - duk_hobject *curr = NULL; - duk_hstring *key = NULL; - duk_uint32_t arr_idx = DUK__NO_ARRAY_INDEX; - duk_propdesc desc; - duk_uint_t sanity; - - DUK_DDD(DUK_DDDPRINT("getprop: thr=%p, obj=%p, key=%p (obj -> %!T, key -> %!T)", - (void *) thr, - (void *) tv_obj, - (void *) tv_key, - (duk_tval *) tv_obj, - (duk_tval *) tv_key)); - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(thr->heap != NULL); - DUK_ASSERT(tv_obj != NULL); - DUK_ASSERT(tv_key != NULL); - - DUK_ASSERT_VALSTACK_SPACE(thr, DUK__VALSTACK_SPACE); - - DUK_STATS_INC(thr->heap, stats_getprop_all); - - /* - * Make a copy of tv_obj, tv_key, and tv_val to avoid any issues of - * them being invalidated by a valstack resize. - * - * XXX: this is now an overkill for many fast paths. Rework this - * to be faster (although switching to a valstack discipline might - * be a better solution overall). - */ - - DUK_TVAL_SET_TVAL(&tv_obj_copy, tv_obj); - DUK_TVAL_SET_TVAL(&tv_key_copy, tv_key); - tv_obj = &tv_obj_copy; - tv_key = &tv_key_copy; - - /* - * Coercion and fast path processing - */ - - switch (DUK_TVAL_GET_TAG(tv_obj)) { - case DUK_TAG_UNDEFINED: - case DUK_TAG_NULL: { - /* Note: unconditional throw */ - DUK_DDD(DUK_DDDPRINT("base object is undefined or null -> reject")); -#if defined(DUK_USE_PARANOID_ERRORS) - DUK_ERROR_TYPE(thr, DUK_STR_INVALID_BASE); -#else - DUK_ERROR_FMT2(thr, - DUK_ERR_TYPE_ERROR, - "cannot read property %s of %s", - duk_push_string_tval_readable(thr, tv_key), - duk_push_string_tval_readable(thr, tv_obj)); -#endif - DUK_WO_NORETURN(return 0;); - break; - } - - case DUK_TAG_BOOLEAN: { - DUK_DDD(DUK_DDDPRINT("base object is a boolean, start lookup from boolean prototype")); - curr = thr->builtins[DUK_BIDX_BOOLEAN_PROTOTYPE]; - break; - } - - case DUK_TAG_STRING: { - duk_hstring *h = DUK_TVAL_GET_STRING(tv_obj); - duk_int_t pop_count; - - if (DUK_UNLIKELY(DUK_HSTRING_HAS_SYMBOL(h))) { - /* Symbols (ES2015 or hidden) don't have virtual properties. */ - DUK_DDD(DUK_DDDPRINT("base object is a symbol, start lookup from symbol prototype")); - curr = thr->builtins[DUK_BIDX_SYMBOL_PROTOTYPE]; - break; - } - -#if defined(DUK_USE_FASTINT) - if (DUK_TVAL_IS_FASTINT(tv_key)) { - arr_idx = duk__tval_fastint_to_arr_idx(tv_key); - DUK_DDD(DUK_DDDPRINT("base object string, key is a fast-path fastint; arr_idx %ld", (long) arr_idx)); - pop_count = 0; - } else -#endif - if (DUK_TVAL_IS_NUMBER(tv_key)) { - arr_idx = duk__tval_number_to_arr_idx(tv_key); - DUK_DDD(DUK_DDDPRINT("base object string, key is a fast-path number; arr_idx %ld", (long) arr_idx)); - pop_count = 0; - } else { - arr_idx = duk__push_tval_to_property_key(thr, tv_key, &key); - DUK_ASSERT(key != NULL); - DUK_DDD(DUK_DDDPRINT("base object string, key is a non-fast-path number; after " - "coercion key is %!T, arr_idx %ld", - (duk_tval *) duk_get_tval(thr, -1), - (long) arr_idx)); - pop_count = 1; - } - - if (arr_idx != DUK__NO_ARRAY_INDEX && arr_idx < DUK_HSTRING_GET_CHARLEN(h)) { - duk_pop_n_unsafe(thr, pop_count); - duk_push_hstring(thr, h); - duk_substring(thr, -1, arr_idx, arr_idx + 1); /* [str] -> [substr] */ - - DUK_STATS_INC(thr->heap, stats_getprop_stringidx); - DUK_DDD(DUK_DDDPRINT("-> %!T (base is string, key is an index inside string length " - "after coercion -> return char)", - (duk_tval *) duk_get_tval(thr, -1))); - return 1; - } - - if (pop_count == 0) { - /* This is a pretty awkward control flow, but we need to recheck the - * key coercion here. - */ - arr_idx = duk__push_tval_to_property_key(thr, tv_key, &key); - DUK_ASSERT(key != NULL); - DUK_DDD(DUK_DDDPRINT("base object string, key is a non-fast-path number; after " - "coercion key is %!T, arr_idx %ld", - (duk_tval *) duk_get_tval(thr, -1), - (long) arr_idx)); - } - - if (key == DUK_HTHREAD_STRING_LENGTH(thr)) { - duk_pop_unsafe(thr); /* [key] -> [] */ - duk_push_uint(thr, (duk_uint_t) DUK_HSTRING_GET_CHARLEN(h)); /* [] -> [res] */ - - DUK_STATS_INC(thr->heap, stats_getprop_stringlen); - DUK_DDD(DUK_DDDPRINT("-> %!T (base is string, key is 'length' after coercion -> " - "return string length)", - (duk_tval *) duk_get_tval(thr, -1))); - return 1; - } - - DUK_DDD(DUK_DDDPRINT("base object is a string, start lookup from string prototype")); - curr = thr->builtins[DUK_BIDX_STRING_PROTOTYPE]; - goto lookup; /* avoid double coercion */ - } - - case DUK_TAG_OBJECT: { -#if defined(DUK_USE_ARRAY_PROP_FASTPATH) - duk_tval *tmp; -#endif - - curr = DUK_TVAL_GET_OBJECT(tv_obj); - DUK_ASSERT(curr != NULL); - - /* XXX: array .length fast path (important in e.g. loops)? */ - -#if defined(DUK_USE_ARRAY_PROP_FASTPATH) - tmp = duk__getprop_shallow_fastpath_array_tval(thr, curr, tv_key); - if (tmp) { - duk_push_tval(thr, tmp); - - DUK_DDD(DUK_DDDPRINT("-> %!T (base is object, key is a number, array part " - "fast path)", - (duk_tval *) duk_get_tval(thr, -1))); - DUK_STATS_INC(thr->heap, stats_getprop_arrayidx); - return 1; - } -#endif - -#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) - if (duk__getprop_fastpath_bufobj_tval(thr, curr, tv_key) != 0) { - /* Read value pushed on stack. */ - DUK_DDD(DUK_DDDPRINT("-> %!T (base is bufobj, key is a number, bufobj " - "fast path)", - (duk_tval *) duk_get_tval(thr, -1))); - DUK_STATS_INC(thr->heap, stats_getprop_bufobjidx); - return 1; - } -#endif - -#if defined(DUK_USE_ES6_PROXY) - if (DUK_UNLIKELY(DUK_HOBJECT_IS_PROXY(curr))) { - duk_hobject *h_target; - - if (duk__proxy_check_prop(thr, curr, DUK_STRIDX_GET, tv_key, &h_target)) { - /* -> [ ... trap handler ] */ - DUK_DDD(DUK_DDDPRINT("-> proxy object 'get' for key %!T", (duk_tval *) tv_key)); - DUK_STATS_INC(thr->heap, stats_getprop_proxy); - duk_push_hobject(thr, h_target); /* target */ - duk_push_tval(thr, tv_key); /* P */ - duk_push_tval(thr, tv_obj); /* Receiver: Proxy object */ - duk_call_method(thr, 3 /*nargs*/); - - /* Target object must be checked for a conflicting - * non-configurable property. - */ - arr_idx = duk__push_tval_to_property_key(thr, tv_key, &key); - DUK_ASSERT(key != NULL); - - if (duk__get_own_propdesc_raw(thr, h_target, key, arr_idx, &desc, DUK_GETDESC_FLAG_PUSH_VALUE)) { - duk_tval *tv_hook = duk_require_tval(thr, -3); /* value from hook */ - duk_tval *tv_targ = duk_require_tval(thr, -1); /* value from target */ - duk_bool_t datadesc_reject; - duk_bool_t accdesc_reject; - - DUK_DDD(DUK_DDDPRINT("proxy 'get': target has matching property %!O, check for " - "conflicting property; tv_hook=%!T, tv_targ=%!T, desc.flags=0x%08lx, " - "desc.get=%p, desc.set=%p", - (duk_heaphdr *) key, - (duk_tval *) tv_hook, - (duk_tval *) tv_targ, - (unsigned long) desc.flags, - (void *) desc.get, - (void *) desc.set)); - - datadesc_reject = !(desc.flags & DUK_PROPDESC_FLAG_ACCESSOR) && - !(desc.flags & DUK_PROPDESC_FLAG_CONFIGURABLE) && - !(desc.flags & DUK_PROPDESC_FLAG_WRITABLE) && - !duk_js_samevalue(tv_hook, tv_targ); - accdesc_reject = (desc.flags & DUK_PROPDESC_FLAG_ACCESSOR) && - !(desc.flags & DUK_PROPDESC_FLAG_CONFIGURABLE) && (desc.get == NULL) && - !DUK_TVAL_IS_UNDEFINED(tv_hook); - if (datadesc_reject || accdesc_reject) { - DUK_ERROR_TYPE(thr, DUK_STR_PROXY_REJECTED); - DUK_WO_NORETURN(return 0;); - } - - duk_pop_2_unsafe(thr); - } else { - duk_pop_unsafe(thr); - } - return 1; /* return value */ - } - - curr = h_target; /* resume lookup from target */ - DUK_TVAL_SET_OBJECT(tv_obj, curr); - } -#endif /* DUK_USE_ES6_PROXY */ - - if (DUK_HOBJECT_HAS_EXOTIC_ARGUMENTS(curr)) { - arr_idx = duk__push_tval_to_property_key(thr, tv_key, &key); - DUK_ASSERT(key != NULL); - - DUK_STATS_INC(thr->heap, stats_getprop_arguments); - if (duk__check_arguments_map_for_get(thr, curr, key, &desc)) { - DUK_DDD(DUK_DDDPRINT("-> %!T (base is object with arguments exotic behavior, " - "key matches magically bound property -> skip standard " - "Get with replacement value)", - (duk_tval *) duk_get_tval(thr, -1))); - - /* no need for 'caller' post-check, because 'key' must be an array index */ - - duk_remove_m2(thr); /* [key result] -> [result] */ - return 1; - } - - goto lookup; /* avoid double coercion */ - } - break; - } - - /* Buffer has virtual properties similar to string, but indexed values - * are numbers, not 1-byte buffers/strings which would perform badly. - */ - case DUK_TAG_BUFFER: { - duk_hbuffer *h = DUK_TVAL_GET_BUFFER(tv_obj); - duk_int_t pop_count; - - /* - * Because buffer values are often looped over, a number fast path - * is important. - */ - -#if defined(DUK_USE_FASTINT) - if (DUK_TVAL_IS_FASTINT(tv_key)) { - arr_idx = duk__tval_fastint_to_arr_idx(tv_key); - DUK_DDD(DUK_DDDPRINT("base object buffer, key is a fast-path fastint; arr_idx %ld", (long) arr_idx)); - pop_count = 0; - } else -#endif - if (DUK_TVAL_IS_NUMBER(tv_key)) { - arr_idx = duk__tval_number_to_arr_idx(tv_key); - DUK_DDD(DUK_DDDPRINT("base object buffer, key is a fast-path number; arr_idx %ld", (long) arr_idx)); - pop_count = 0; - } else { - arr_idx = duk__push_tval_to_property_key(thr, tv_key, &key); - DUK_ASSERT(key != NULL); - DUK_DDD(DUK_DDDPRINT("base object buffer, key is a non-fast-path number; after " - "coercion key is %!T, arr_idx %ld", - (duk_tval *) duk_get_tval(thr, -1), - (long) arr_idx)); - pop_count = 1; - } - - if (arr_idx != DUK__NO_ARRAY_INDEX && arr_idx < DUK_HBUFFER_GET_SIZE(h)) { - duk_pop_n_unsafe(thr, pop_count); - duk_push_uint(thr, ((duk_uint8_t *) DUK_HBUFFER_GET_DATA_PTR(thr->heap, h))[arr_idx]); - DUK_STATS_INC(thr->heap, stats_getprop_bufferidx); - DUK_DDD(DUK_DDDPRINT("-> %!T (base is buffer, key is an index inside buffer length " - "after coercion -> return byte as number)", - (duk_tval *) duk_get_tval(thr, -1))); - return 1; - } - - if (pop_count == 0) { - /* This is a pretty awkward control flow, but we need to recheck the - * key coercion here. - */ - arr_idx = duk__push_tval_to_property_key(thr, tv_key, &key); - DUK_ASSERT(key != NULL); - DUK_DDD(DUK_DDDPRINT("base object buffer, key is a non-fast-path number; after " - "coercion key is %!T, arr_idx %ld", - (duk_tval *) duk_get_tval(thr, -1), - (long) arr_idx)); - } - - if (key == DUK_HTHREAD_STRING_LENGTH(thr)) { - duk_pop_unsafe(thr); /* [key] -> [] */ - duk_push_uint(thr, (duk_uint_t) DUK_HBUFFER_GET_SIZE(h)); /* [] -> [res] */ - DUK_STATS_INC(thr->heap, stats_getprop_bufferlen); - - DUK_DDD(DUK_DDDPRINT("-> %!T (base is buffer, key is 'length' " - "after coercion -> return buffer length)", - (duk_tval *) duk_get_tval(thr, -1))); - return 1; - } - - DUK_DDD(DUK_DDDPRINT("base object is a buffer, start lookup from Uint8Array prototype")); - curr = thr->builtins[DUK_BIDX_UINT8ARRAY_PROTOTYPE]; - goto lookup; /* avoid double coercion */ - } - - case DUK_TAG_POINTER: { - DUK_DDD(DUK_DDDPRINT("base object is a pointer, start lookup from pointer prototype")); - curr = thr->builtins[DUK_BIDX_POINTER_PROTOTYPE]; - break; - } - - case DUK_TAG_LIGHTFUNC: { - /* Lightfuncs inherit getter .name and .length from %NativeFunctionPrototype%. */ - DUK_DDD(DUK_DDDPRINT("base object is a lightfunc, start lookup from function prototype")); - curr = thr->builtins[DUK_BIDX_NATIVE_FUNCTION_PROTOTYPE]; - break; - } - -#if defined(DUK_USE_FASTINT) - case DUK_TAG_FASTINT: -#endif - default: { - /* number */ - DUK_DDD(DUK_DDDPRINT("base object is a number, start lookup from number prototype")); - DUK_ASSERT(!DUK_TVAL_IS_UNUSED(tv_obj)); - DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv_obj)); - curr = thr->builtins[DUK_BIDX_NUMBER_PROTOTYPE]; - break; - } - } - - /* key coercion (unless already coerced above) */ - DUK_ASSERT(key == NULL); - arr_idx = duk__push_tval_to_property_key(thr, tv_key, &key); - DUK_ASSERT(key != NULL); - /* - * Property lookup - */ - -lookup: - /* [key] (coerced) */ - DUK_ASSERT(curr != NULL); - DUK_ASSERT(key != NULL); - - sanity = DUK_HOBJECT_PROTOTYPE_CHAIN_SANITY; - do { - if (!duk__get_own_propdesc_raw(thr, curr, key, arr_idx, &desc, DUK_GETDESC_FLAG_PUSH_VALUE)) { - goto next_in_chain; - } - - if (desc.get != NULL) { - /* accessor with defined getter */ - DUK_ASSERT((desc.flags & DUK_PROPDESC_FLAG_ACCESSOR) != 0); - - duk_pop_unsafe(thr); /* [key undefined] -> [key] */ - duk_push_hobject(thr, desc.get); - duk_push_tval(thr, tv_obj); /* note: original, uncoerced base */ -#if defined(DUK_USE_NONSTD_GETTER_KEY_ARGUMENT) - duk_dup_m3(thr); - duk_call_method(thr, 1); /* [key getter this key] -> [key retval] */ -#else - duk_call_method(thr, 0); /* [key getter this] -> [key retval] */ -#endif - } else { - /* [key value] or [key undefined] */ - - /* data property or accessor without getter */ - DUK_ASSERT(((desc.flags & DUK_PROPDESC_FLAG_ACCESSOR) == 0) || (desc.get == NULL)); - - /* if accessor without getter, return value is undefined */ - DUK_ASSERT(((desc.flags & DUK_PROPDESC_FLAG_ACCESSOR) == 0) || duk_is_undefined(thr, -1)); - - /* Note: for an accessor without getter, falling through to - * check for "caller" exotic behavior is unnecessary as - * "undefined" will never activate the behavior. But it does - * no harm, so we'll do it anyway. - */ - } - - goto found; /* [key result] */ - - next_in_chain: - /* XXX: option to pretend property doesn't exist if sanity limit is - * hit might be useful. - */ - if (DUK_UNLIKELY(sanity-- == 0)) { - DUK_ERROR_RANGE(thr, DUK_STR_PROTOTYPE_CHAIN_LIMIT); - DUK_WO_NORETURN(return 0;); - } - curr = DUK_HOBJECT_GET_PROTOTYPE(thr->heap, curr); - } while (curr != NULL); - - /* - * Not found - */ - - duk_to_undefined(thr, -1); /* [key] -> [undefined] (default value) */ - - DUK_DDD(DUK_DDDPRINT("-> %!T (not found)", (duk_tval *) duk_get_tval(thr, -1))); - return 0; - - /* - * Found; post-processing (Function and arguments objects) - */ - -found: - /* [key result] */ - -#if !defined(DUK_USE_NONSTD_FUNC_CALLER_PROPERTY) - /* Special behavior for 'caller' property of (non-bound) function objects - * and non-strict Arguments objects: if 'caller' -value- (!) is a strict - * mode function, throw a TypeError (E5 Sections 15.3.5.4, 10.6). - * Quite interestingly, a non-strict function with no formal arguments - * will get an arguments object -without- special 'caller' behavior! - * - * The E5.1 spec is a bit ambiguous if this special behavior applies when - * a bound function is the base value (not the 'caller' value): Section - * 15.3.4.5 (describing bind()) states that [[Get]] for bound functions - * matches that of Section 15.3.5.4 ([[Get]] for Function instances). - * However, Section 13.3.5.4 has "NOTE: Function objects created using - * Function.prototype.bind use the default [[Get]] internal method." - * The current implementation assumes this means that bound functions - * should not have the special [[Get]] behavior. - * - * The E5.1 spec is also a bit unclear if the TypeError throwing is - * applied if the 'caller' value is a strict bound function. The - * current implementation will throw even for both strict non-bound - * and strict bound functions. - * - * See test-dev-strict-func-as-caller-prop-value.js for quite extensive - * tests. - * - * This exotic behavior is disabled when the non-standard 'caller' property - * is enabled, as it conflicts with the free use of 'caller'. - */ - if (key == DUK_HTHREAD_STRING_CALLER(thr) && DUK_TVAL_IS_OBJECT(tv_obj)) { - duk_hobject *orig = DUK_TVAL_GET_OBJECT(tv_obj); - DUK_ASSERT(orig != NULL); - - if (DUK_HOBJECT_IS_NONBOUND_FUNCTION(orig) || DUK_HOBJECT_HAS_EXOTIC_ARGUMENTS(orig)) { - duk_hobject *h; - - /* XXX: The TypeError is currently not applied to bound - * functions because the 'strict' flag is not copied by - * bind(). This may or may not be correct, the specification - * only refers to the value being a "strict mode Function - * object" which is ambiguous. - */ - DUK_ASSERT(!DUK_HOBJECT_HAS_BOUNDFUNC(orig)); - - h = duk_get_hobject(thr, -1); /* NULL if not an object */ - if (h && DUK_HOBJECT_IS_FUNCTION(h) && DUK_HOBJECT_HAS_STRICT(h)) { - /* XXX: sufficient to check 'strict', assert for 'is function' */ - DUK_ERROR_TYPE(thr, DUK_STR_STRICT_CALLER_READ); - DUK_WO_NORETURN(return 0;); - } - } - } -#endif /* !DUK_USE_NONSTD_FUNC_CALLER_PROPERTY */ - - duk_remove_m2(thr); /* [key result] -> [result] */ - - DUK_DDD(DUK_DDDPRINT("-> %!T (found)", (duk_tval *) duk_get_tval(thr, -1))); - return 1; -} - -/* - * HASPROP: ECMAScript property existence check ("in" operator). - * - * Interestingly, the 'in' operator does not do any coercion of - * the target object. - */ - -DUK_INTERNAL duk_bool_t duk_hobject_hasprop(duk_hthread *thr, duk_tval *tv_obj, duk_tval *tv_key) { - duk_tval tv_key_copy; - duk_hobject *obj; - duk_hstring *key; - duk_uint32_t arr_idx; - duk_bool_t rc; - duk_propdesc desc; - - DUK_DDD(DUK_DDDPRINT("hasprop: thr=%p, obj=%p, key=%p (obj -> %!T, key -> %!T)", - (void *) thr, - (void *) tv_obj, - (void *) tv_key, - (duk_tval *) tv_obj, - (duk_tval *) tv_key)); - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(thr->heap != NULL); - DUK_ASSERT(tv_obj != NULL); - DUK_ASSERT(tv_key != NULL); - DUK_ASSERT_VALSTACK_SPACE(thr, DUK__VALSTACK_SPACE); - - DUK_TVAL_SET_TVAL(&tv_key_copy, tv_key); - tv_key = &tv_key_copy; - - /* - * The 'in' operator requires an object as its right hand side, - * throwing a TypeError unconditionally if this is not the case. - * - * However, lightfuncs need to behave like fully fledged objects - * here to be maximally transparent, so we need to handle them - * here. Same goes for plain buffers which behave like ArrayBuffers. - */ - - /* XXX: Refactor key coercion so that it's only called once. It can't - * be trivially lifted here because the object must be type checked - * first. - */ - - if (DUK_TVAL_IS_OBJECT(tv_obj)) { - obj = DUK_TVAL_GET_OBJECT(tv_obj); - DUK_ASSERT(obj != NULL); - - arr_idx = duk__push_tval_to_property_key(thr, tv_key, &key); - } else if (DUK_TVAL_IS_BUFFER(tv_obj)) { - arr_idx = duk__push_tval_to_property_key(thr, tv_key, &key); - if (duk__key_is_plain_buf_ownprop(thr, DUK_TVAL_GET_BUFFER(tv_obj), key, arr_idx)) { - rc = 1; - goto pop_and_return; - } - obj = thr->builtins[DUK_BIDX_UINT8ARRAY_PROTOTYPE]; - } else if (DUK_TVAL_IS_LIGHTFUNC(tv_obj)) { - arr_idx = duk__push_tval_to_property_key(thr, tv_key, &key); - - /* If not found, resume existence check from %NativeFunctionPrototype%. - * We can just substitute the value in this case; nothing will - * need the original base value (as would be the case with e.g. - * setters/getters. - */ - obj = thr->builtins[DUK_BIDX_NATIVE_FUNCTION_PROTOTYPE]; - } else { - /* Note: unconditional throw */ - DUK_DDD(DUK_DDDPRINT("base object is not an object -> reject")); - DUK_ERROR_TYPE(thr, DUK_STR_INVALID_BASE); - DUK_WO_NORETURN(return 0;); - } - - /* XXX: fast path for arrays? */ - - DUK_ASSERT(key != NULL); - DUK_ASSERT(obj != NULL); - DUK_UNREF(arr_idx); - -#if defined(DUK_USE_ES6_PROXY) - if (DUK_UNLIKELY(DUK_HOBJECT_IS_PROXY(obj))) { - duk_hobject *h_target; - duk_bool_t tmp_bool; - - /* XXX: the key in 'key in obj' is string coerced before we're called - * (which is the required behavior in E5/E5.1/E6) so the key is a string - * here already. - */ - - if (duk__proxy_check_prop(thr, obj, DUK_STRIDX_HAS, tv_key, &h_target)) { - /* [ ... key trap handler ] */ - DUK_DDD(DUK_DDDPRINT("-> proxy object 'has' for key %!T", (duk_tval *) tv_key)); - duk_push_hobject(thr, h_target); /* target */ - duk_push_tval(thr, tv_key); /* P */ - duk_call_method(thr, 2 /*nargs*/); - tmp_bool = duk_to_boolean_top_pop(thr); - if (!tmp_bool) { - /* Target object must be checked for a conflicting - * non-configurable property. - */ - - if (duk__get_own_propdesc_raw(thr, h_target, key, arr_idx, &desc, 0 /*flags*/)) { /* don't push - value */ - DUK_DDD(DUK_DDDPRINT("proxy 'has': target has matching property %!O, check for " - "conflicting property; desc.flags=0x%08lx, " - "desc.get=%p, desc.set=%p", - (duk_heaphdr *) key, - (unsigned long) desc.flags, - (void *) desc.get, - (void *) desc.set)); - /* XXX: Extensibility check for target uses IsExtensible(). If we - * implemented the isExtensible trap and didn't reject proxies as - * proxy targets, it should be respected here. - */ - if (!((desc.flags & DUK_PROPDESC_FLAG_CONFIGURABLE) && /* property is configurable and */ - DUK_HOBJECT_HAS_EXTENSIBLE(h_target))) { /* ... target is extensible */ - DUK_ERROR_TYPE(thr, DUK_STR_PROXY_REJECTED); - DUK_WO_NORETURN(return 0;); - } - } - } - - duk_pop_unsafe(thr); /* [ key ] -> [] */ - return tmp_bool; - } - - obj = h_target; /* resume check from proxy target */ - } -#endif /* DUK_USE_ES6_PROXY */ - - /* XXX: inline into a prototype walking loop? */ - - rc = duk__get_propdesc(thr, obj, key, &desc, 0 /*flags*/); /* don't push value */ - /* fall through */ - -pop_and_return: - duk_pop_unsafe(thr); /* [ key ] -> [] */ - return rc; -} - -/* - * HASPROP variant used internally. - * - * This primitive must never throw an error, callers rely on this. - * In particular, don't throw an error for prototype loops; instead, - * pretend like the property doesn't exist if a prototype sanity limit - * is reached. - * - * Does not implement proxy behavior: if applied to a proxy object, - * returns key existence on the proxy object itself. - */ - -DUK_INTERNAL duk_bool_t duk_hobject_hasprop_raw(duk_hthread *thr, duk_hobject *obj, duk_hstring *key) { - duk_propdesc dummy; - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(thr->heap != NULL); - DUK_ASSERT(obj != NULL); - DUK_ASSERT(key != NULL); - - DUK_ASSERT_VALSTACK_SPACE(thr, DUK__VALSTACK_SPACE); - - return duk__get_propdesc(thr, obj, key, &dummy, DUK_GETDESC_FLAG_IGNORE_PROTOLOOP); /* don't push value */ -} - -/* - * Helper: handle Array object 'length' write which automatically - * deletes properties, see E5 Section 15.4.5.1, step 3. This is - * quite tricky to get right. - * - * Used by duk_hobject_putprop(). - */ - -/* Coerce a new .length candidate to a number and check that it's a valid - * .length. - */ -DUK_LOCAL duk_uint32_t duk__to_new_array_length_checked(duk_hthread *thr, duk_tval *tv) { - duk_uint32_t res; - duk_double_t d; - -#if !defined(DUK_USE_PREFER_SIZE) -#if defined(DUK_USE_FASTINT) - /* When fastints are enabled, the most interesting case is assigning - * a fastint to .length (e.g. arr.length = 0). - */ - if (DUK_TVAL_IS_FASTINT(tv)) { - /* Very common case. */ - duk_int64_t fi; - fi = DUK_TVAL_GET_FASTINT(tv); - if (fi < 0 || fi > DUK_I64_CONSTANT(0xffffffff)) { - goto fail_range; - } - return (duk_uint32_t) fi; - } -#else /* DUK_USE_FASTINT */ - /* When fastints are not enabled, the most interesting case is any - * number. - */ - if (DUK_TVAL_IS_DOUBLE(tv)) { - d = DUK_TVAL_GET_NUMBER(tv); - } -#endif /* DUK_USE_FASTINT */ - else -#endif /* !DUK_USE_PREFER_SIZE */ - { - /* In all other cases, and when doing a size optimized build, - * fall back to the comprehensive handler. - */ - d = duk_js_tonumber(thr, tv); - } - - /* Refuse to update an Array's 'length' to a value outside the - * 32-bit range. Negative zero is accepted as zero. - */ - res = duk_double_to_uint32_t(d); - if (!duk_double_equals((duk_double_t) res, d)) { - goto fail_range; - } - - return res; - -fail_range: - DUK_ERROR_RANGE(thr, DUK_STR_INVALID_ARRAY_LENGTH); - DUK_WO_NORETURN(return 0;); -} - -/* Delete elements required by a smaller length, taking into account - * potentially non-configurable elements. Returns non-zero if all - * elements could be deleted, and zero if all or some elements could - * not be deleted. Also writes final "target length" to 'out_result_len'. - * This is the length value that should go into the 'length' property - * (must be set by the caller). Never throws an error. - */ -DUK_LOCAL -duk_bool_t duk__handle_put_array_length_smaller(duk_hthread *thr, - duk_hobject *obj, - duk_uint32_t old_len, - duk_uint32_t new_len, - duk_bool_t force_flag, - duk_uint32_t *out_result_len) { - duk_uint32_t target_len; - duk_uint_fast32_t i; - duk_uint32_t arr_idx; - duk_hstring *key; - duk_tval *tv; - duk_bool_t rc; - - DUK_DDD(DUK_DDDPRINT("new array length smaller than old (%ld -> %ld), " - "probably need to remove elements", - (long) old_len, - (long) new_len)); - - /* - * New length is smaller than old length, need to delete properties above - * the new length. - * - * If array part exists, this is straightforward: array entries cannot - * be non-configurable so this is guaranteed to work. - * - * If array part does not exist, array-indexed values are scattered - * in the entry part, and some may not be configurable (preventing length - * from becoming lower than their index + 1). To handle the algorithm - * in E5 Section 15.4.5.1, step l correctly, we scan the entire property - * set twice. - */ - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(obj != NULL); - DUK_ASSERT(new_len < old_len); - DUK_ASSERT(out_result_len != NULL); - DUK_ASSERT_VALSTACK_SPACE(thr, DUK__VALSTACK_SPACE); - - DUK_ASSERT(DUK_HOBJECT_HAS_EXOTIC_ARRAY(obj)); - DUK_ASSERT(DUK_HOBJECT_IS_ARRAY(obj)); - - if (DUK_HOBJECT_HAS_ARRAY_PART(obj)) { - /* - * All defined array-indexed properties are in the array part - * (we assume the array part is comprehensive), and all array - * entries are writable, configurable, and enumerable. Thus, - * nothing can prevent array entries from being deleted. - */ - - DUK_DDD(DUK_DDDPRINT("have array part, easy case")); - - if (old_len < DUK_HOBJECT_GET_ASIZE(obj)) { - /* XXX: assertion that entries >= old_len are already unused */ - i = old_len; - } else { - i = DUK_HOBJECT_GET_ASIZE(obj); - } - DUK_ASSERT(i <= DUK_HOBJECT_GET_ASIZE(obj)); - - while (i > new_len) { - i--; - tv = DUK_HOBJECT_A_GET_VALUE_PTR(thr->heap, obj, i); - DUK_TVAL_SET_UNUSED_UPDREF(thr, tv); /* side effects */ - } - - *out_result_len = new_len; - return 1; - } else { - /* - * Entries part is a bit more complex. - */ - - /* Stage 1: find highest preventing non-configurable entry (if any). - * When forcing, ignore non-configurability. - */ - - DUK_DDD(DUK_DDDPRINT("no array part, slow case")); - - DUK_DDD(DUK_DDDPRINT("array length write, no array part, stage 1: find target_len " - "(highest preventing non-configurable entry (if any))")); - - target_len = new_len; - if (force_flag) { - DUK_DDD(DUK_DDDPRINT("array length write, no array part; force flag -> skip stage 1")); - goto skip_stage1; - } - for (i = 0; i < DUK_HOBJECT_GET_ENEXT(obj); i++) { - key = DUK_HOBJECT_E_GET_KEY(thr->heap, obj, i); - if (!key) { - DUK_DDD(DUK_DDDPRINT("skip entry index %ld: null key", (long) i)); - continue; - } - if (!DUK_HSTRING_HAS_ARRIDX(key)) { - DUK_DDD(DUK_DDDPRINT("skip entry index %ld: key not an array index", (long) i)); - continue; - } - - DUK_ASSERT( - DUK_HSTRING_HAS_ARRIDX(key)); /* XXX: macro checks for array index flag, which is unnecessary here */ - arr_idx = DUK_HSTRING_GET_ARRIDX_SLOW(key); - DUK_ASSERT(arr_idx != DUK__NO_ARRAY_INDEX); - DUK_ASSERT(arr_idx < old_len); /* consistency requires this */ - - if (arr_idx < new_len) { - DUK_DDD(DUK_DDDPRINT("skip entry index %ld: key is array index %ld, below new_len", - (long) i, - (long) arr_idx)); - continue; - } - if (DUK_HOBJECT_E_SLOT_IS_CONFIGURABLE(thr->heap, obj, i)) { - DUK_DDD(DUK_DDDPRINT("skip entry index %ld: key is a relevant array index %ld, but configurable", - (long) i, - (long) arr_idx)); - continue; - } - - /* relevant array index is non-configurable, blocks write */ - if (arr_idx >= target_len) { - DUK_DDD(DUK_DDDPRINT("entry at index %ld has arr_idx %ld, is not configurable, " - "update target_len %ld -> %ld", - (long) i, - (long) arr_idx, - (long) target_len, - (long) (arr_idx + 1))); - target_len = arr_idx + 1; - } - } - skip_stage1: - - /* stage 2: delete configurable entries above target length */ - - DUK_DDD( - DUK_DDDPRINT("old_len=%ld, new_len=%ld, target_len=%ld", (long) old_len, (long) new_len, (long) target_len)); - - DUK_DDD(DUK_DDDPRINT("array length write, no array part, stage 2: remove " - "entries >= target_len")); - - for (i = 0; i < DUK_HOBJECT_GET_ENEXT(obj); i++) { - key = DUK_HOBJECT_E_GET_KEY(thr->heap, obj, i); - if (!key) { - DUK_DDD(DUK_DDDPRINT("skip entry index %ld: null key", (long) i)); - continue; - } - if (!DUK_HSTRING_HAS_ARRIDX(key)) { - DUK_DDD(DUK_DDDPRINT("skip entry index %ld: key not an array index", (long) i)); - continue; - } - - DUK_ASSERT( - DUK_HSTRING_HAS_ARRIDX(key)); /* XXX: macro checks for array index flag, which is unnecessary here */ - arr_idx = DUK_HSTRING_GET_ARRIDX_SLOW(key); - DUK_ASSERT(arr_idx != DUK__NO_ARRAY_INDEX); - DUK_ASSERT(arr_idx < old_len); /* consistency requires this */ - - if (arr_idx < target_len) { - DUK_DDD(DUK_DDDPRINT("skip entry index %ld: key is array index %ld, below target_len", - (long) i, - (long) arr_idx)); - continue; - } - DUK_ASSERT(force_flag || DUK_HOBJECT_E_SLOT_IS_CONFIGURABLE(thr->heap, obj, i)); /* stage 1 guarantees */ - - DUK_DDD(DUK_DDDPRINT("delete entry index %ld: key is array index %ld", (long) i, (long) arr_idx)); - - /* - * Slow delete, but we don't care as we're already in a very slow path. - * The delete always succeeds: key has no exotic behavior, property - * is configurable, and no resize occurs. - */ - rc = duk_hobject_delprop_raw(thr, obj, key, force_flag ? DUK_DELPROP_FLAG_FORCE : 0); - DUK_UNREF(rc); - DUK_ASSERT(rc != 0); - } - - /* stage 3: update length (done by caller), decide return code */ - - DUK_DDD(DUK_DDDPRINT("array length write, no array part, stage 3: update length (done by caller)")); - - *out_result_len = target_len; - - if (target_len == new_len) { - DUK_DDD(DUK_DDDPRINT("target_len matches new_len, return success")); - return 1; - } - DUK_DDD(DUK_DDDPRINT("target_len does not match new_len (some entry prevented " - "full length adjustment), return error")); - return 0; - } - - DUK_UNREACHABLE(); -} - -/* XXX: is valstack top best place for argument? */ -DUK_LOCAL duk_bool_t duk__handle_put_array_length(duk_hthread *thr, duk_hobject *obj) { - duk_harray *a; - duk_uint32_t old_len; - duk_uint32_t new_len; - duk_uint32_t result_len; - duk_bool_t rc; - - DUK_DDD(DUK_DDDPRINT("handling a put operation to array 'length' exotic property, " - "new val: %!T", - (duk_tval *) duk_get_tval(thr, -1))); - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(obj != NULL); - - DUK_ASSERT_VALSTACK_SPACE(thr, DUK__VALSTACK_SPACE); - - DUK_ASSERT(DUK_HOBJECT_HAS_EXOTIC_ARRAY(obj)); - DUK_ASSERT(DUK_HOBJECT_IS_ARRAY(obj)); - a = (duk_harray *) obj; - DUK_HARRAY_ASSERT_VALID(a); - - DUK_ASSERT(duk_is_valid_index(thr, -1)); - - /* - * Get old and new length - */ - - old_len = a->length; - new_len = duk__to_new_array_length_checked(thr, DUK_GET_TVAL_NEGIDX(thr, -1)); - DUK_DDD(DUK_DDDPRINT("old_len=%ld, new_len=%ld", (long) old_len, (long) new_len)); - - /* - * Writability check - */ - - if (DUK_HARRAY_LENGTH_NONWRITABLE(a)) { - DUK_DDD(DUK_DDDPRINT("length is not writable, fail")); - return 0; - } - - /* - * New length not lower than old length => no changes needed - * (not even array allocation). - */ - - if (new_len >= old_len) { - DUK_DDD(DUK_DDDPRINT("new length is same or higher than old length, just update length, no deletions")); - a->length = new_len; - return 1; - } - - DUK_DDD(DUK_DDDPRINT("new length is lower than old length, probably must delete entries")); - - /* - * New length lower than old length => delete elements, then - * update length. - * - * Note: even though a bunch of elements have been deleted, the 'desc' is - * still valid as properties haven't been resized (and entries compacted). - */ - - rc = duk__handle_put_array_length_smaller(thr, obj, old_len, new_len, 0 /*force_flag*/, &result_len); - DUK_ASSERT(result_len >= new_len && result_len <= old_len); - - a->length = result_len; - - /* XXX: shrink array allocation or entries compaction here? */ - - return rc; -} - -/* - * PUTPROP: ECMAScript property write. - * - * Unlike ECMAScript primitive which returns nothing, returns 1 to indicate - * success and 0 to indicate failure (assuming throw is not set). - * - * This is an extremely tricky function. Some examples: - * - * * Currently a decref may trigger a GC, which may compact an object's - * property allocation. Consequently, any entry indices (e_idx) will - * be potentially invalidated by a decref. - * - * * Exotic behaviors (strings, arrays, arguments object) require, - * among other things: - * - * - Preprocessing before and postprocessing after an actual property - * write. For example, array index write requires pre-checking the - * array 'length' property for access control, and may require an - * array 'length' update after the actual write has succeeded (but - * not if it fails). - * - * - Deletion of multiple entries, as a result of array 'length' write. - * - * * Input values are taken as pointers which may point to the valstack. - * If valstack is resized because of the put (this may happen at least - * when the array part is abandoned), the pointers can be invalidated. - * (We currently make a copy of all of the input values to avoid issues.) - */ - -DUK_INTERNAL duk_bool_t -duk_hobject_putprop(duk_hthread *thr, duk_tval *tv_obj, duk_tval *tv_key, duk_tval *tv_val, duk_bool_t throw_flag) { - duk_tval tv_obj_copy; - duk_tval tv_key_copy; - duk_tval tv_val_copy; - duk_hobject *orig = NULL; /* NULL if tv_obj is primitive */ - duk_hobject *curr; - duk_hstring *key = NULL; - duk_propdesc desc; - duk_tval *tv; - duk_uint32_t arr_idx; - duk_bool_t rc; - duk_int_t e_idx; - duk_uint_t sanity; - duk_uint32_t new_array_length = 0; /* 0 = no update */ - - DUK_DDD(DUK_DDDPRINT("putprop: thr=%p, obj=%p, key=%p, val=%p, throw=%ld " - "(obj -> %!T, key -> %!T, val -> %!T)", - (void *) thr, - (void *) tv_obj, - (void *) tv_key, - (void *) tv_val, - (long) throw_flag, - (duk_tval *) tv_obj, - (duk_tval *) tv_key, - (duk_tval *) tv_val)); - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(thr->heap != NULL); - DUK_ASSERT(tv_obj != NULL); - DUK_ASSERT(tv_key != NULL); - DUK_ASSERT(tv_val != NULL); - - DUK_ASSERT_VALSTACK_SPACE(thr, DUK__VALSTACK_SPACE); - - DUK_STATS_INC(thr->heap, stats_putprop_all); - - /* - * Make a copy of tv_obj, tv_key, and tv_val to avoid any issues of - * them being invalidated by a valstack resize. - * - * XXX: this is an overkill for some paths, so optimize this later - * (or maybe switch to a stack arguments model entirely). - */ - - DUK_TVAL_SET_TVAL(&tv_obj_copy, tv_obj); - DUK_TVAL_SET_TVAL(&tv_key_copy, tv_key); - DUK_TVAL_SET_TVAL(&tv_val_copy, tv_val); - tv_obj = &tv_obj_copy; - tv_key = &tv_key_copy; - tv_val = &tv_val_copy; - - /* - * Coercion and fast path processing. - */ - - switch (DUK_TVAL_GET_TAG(tv_obj)) { - case DUK_TAG_UNDEFINED: - case DUK_TAG_NULL: { - /* Note: unconditional throw */ - DUK_DDD(DUK_DDDPRINT("base object is undefined or null -> reject (object=%!iT)", (duk_tval *) tv_obj)); -#if defined(DUK_USE_PARANOID_ERRORS) - DUK_ERROR_TYPE(thr, DUK_STR_INVALID_BASE); -#else - DUK_ERROR_FMT2(thr, - DUK_ERR_TYPE_ERROR, - "cannot write property %s of %s", - duk_push_string_tval_readable(thr, tv_key), - duk_push_string_tval_readable(thr, tv_obj)); -#endif - DUK_WO_NORETURN(return 0;); - break; - } - - case DUK_TAG_BOOLEAN: { - DUK_DDD(DUK_DDDPRINT("base object is a boolean, start lookup from boolean prototype")); - curr = thr->builtins[DUK_BIDX_BOOLEAN_PROTOTYPE]; - break; - } - - case DUK_TAG_STRING: { - duk_hstring *h = DUK_TVAL_GET_STRING(tv_obj); - - /* - * Note: currently no fast path for array index writes. - * They won't be possible anyway as strings are immutable. - */ - - DUK_ASSERT(key == NULL); - arr_idx = duk__push_tval_to_property_key(thr, tv_key, &key); - DUK_ASSERT(key != NULL); - - if (DUK_UNLIKELY(DUK_HSTRING_HAS_SYMBOL(h))) { - /* Symbols (ES2015 or hidden) don't have virtual properties. */ - curr = thr->builtins[DUK_BIDX_SYMBOL_PROTOTYPE]; - goto lookup; - } - - if (key == DUK_HTHREAD_STRING_LENGTH(thr)) { - goto fail_not_writable; - } - - if (arr_idx != DUK__NO_ARRAY_INDEX && arr_idx < DUK_HSTRING_GET_CHARLEN(h)) { - goto fail_not_writable; - } - - DUK_DDD(DUK_DDDPRINT("base object is a string, start lookup from string prototype")); - curr = thr->builtins[DUK_BIDX_STRING_PROTOTYPE]; - goto lookup; /* avoid double coercion */ - } - - case DUK_TAG_OBJECT: { - orig = DUK_TVAL_GET_OBJECT(tv_obj); - DUK_ASSERT(orig != NULL); - -#if defined(DUK_USE_ROM_OBJECTS) - /* With this check in place fast paths won't need read-only - * object checks. This is technically incorrect if there are - * setters that cause no writes to ROM objects, but current - * built-ins don't have such setters. - */ - if (DUK_HEAPHDR_HAS_READONLY((duk_heaphdr *) orig)) { - DUK_DD(DUK_DDPRINT("attempt to putprop on read-only target object")); - goto fail_not_writable_no_pop; /* Must avoid duk_pop() in exit path */ - } -#endif - - /* The fast path for array property put is not fully compliant: - * If one places conflicting number-indexed properties into - * Array.prototype (for example, a non-writable Array.prototype[7]) - * the fast path will incorrectly ignore them. - * - * This fast path could be made compliant by falling through - * to the slow path if the previous value was UNUSED. This would - * also remove the need to check for extensibility. Right now a - * non-extensible array is slower than an extensible one as far - * as writes are concerned. - * - * The fast path behavior is documented in more detail here: - * tests/ecmascript/test-misc-array-fast-write.js - */ - - /* XXX: array .length? */ - -#if defined(DUK_USE_ARRAY_PROP_FASTPATH) - if (duk__putprop_shallow_fastpath_array_tval(thr, orig, tv_key, tv_val) != 0) { - DUK_DDD(DUK_DDDPRINT("array fast path success")); - DUK_STATS_INC(thr->heap, stats_putprop_arrayidx); - return 1; - } -#endif - -#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) - if (duk__putprop_fastpath_bufobj_tval(thr, orig, tv_key, tv_val) != 0) { - DUK_DDD(DUK_DDDPRINT("base is bufobj, key is a number, bufobj fast path")); - DUK_STATS_INC(thr->heap, stats_putprop_bufobjidx); - return 1; - } -#endif - -#if defined(DUK_USE_ES6_PROXY) - if (DUK_UNLIKELY(DUK_HOBJECT_IS_PROXY(orig))) { - duk_hobject *h_target; - duk_bool_t tmp_bool; - - if (duk__proxy_check_prop(thr, orig, DUK_STRIDX_SET, tv_key, &h_target)) { - /* -> [ ... trap handler ] */ - DUK_DDD(DUK_DDDPRINT("-> proxy object 'set' for key %!T", (duk_tval *) tv_key)); - DUK_STATS_INC(thr->heap, stats_putprop_proxy); - duk_push_hobject(thr, h_target); /* target */ - duk_push_tval(thr, tv_key); /* P */ - duk_push_tval(thr, tv_val); /* V */ - duk_push_tval(thr, tv_obj); /* Receiver: Proxy object */ - duk_call_method(thr, 4 /*nargs*/); - tmp_bool = duk_to_boolean_top_pop(thr); - if (!tmp_bool) { - goto fail_proxy_rejected; - } - - /* Target object must be checked for a conflicting - * non-configurable property. - */ - arr_idx = duk__push_tval_to_property_key(thr, tv_key, &key); - DUK_ASSERT(key != NULL); - - if (duk__get_own_propdesc_raw(thr, h_target, key, arr_idx, &desc, DUK_GETDESC_FLAG_PUSH_VALUE)) { - duk_tval *tv_targ = duk_require_tval(thr, -1); - duk_bool_t datadesc_reject; - duk_bool_t accdesc_reject; - - DUK_DDD(DUK_DDDPRINT("proxy 'set': target has matching property %!O, check for " - "conflicting property; tv_val=%!T, tv_targ=%!T, desc.flags=0x%08lx, " - "desc.get=%p, desc.set=%p", - (duk_heaphdr *) key, - (duk_tval *) tv_val, - (duk_tval *) tv_targ, - (unsigned long) desc.flags, - (void *) desc.get, - (void *) desc.set)); - - datadesc_reject = !(desc.flags & DUK_PROPDESC_FLAG_ACCESSOR) && - !(desc.flags & DUK_PROPDESC_FLAG_CONFIGURABLE) && - !(desc.flags & DUK_PROPDESC_FLAG_WRITABLE) && - !duk_js_samevalue(tv_val, tv_targ); - accdesc_reject = (desc.flags & DUK_PROPDESC_FLAG_ACCESSOR) && - !(desc.flags & DUK_PROPDESC_FLAG_CONFIGURABLE) && (desc.set == NULL); - if (datadesc_reject || accdesc_reject) { - DUK_ERROR_TYPE(thr, DUK_STR_PROXY_REJECTED); - DUK_WO_NORETURN(return 0;); - } - - duk_pop_2_unsafe(thr); - } else { - duk_pop_unsafe(thr); - } - return 1; /* success */ - } - - orig = h_target; /* resume write to target */ - DUK_TVAL_SET_OBJECT(tv_obj, orig); - } -#endif /* DUK_USE_ES6_PROXY */ - - curr = orig; - break; - } - - case DUK_TAG_BUFFER: { - duk_hbuffer *h = DUK_TVAL_GET_BUFFER(tv_obj); - duk_int_t pop_count = 0; - - /* - * Because buffer values may be looped over and read/written - * from, an array index fast path is important. - */ - -#if defined(DUK_USE_FASTINT) - if (DUK_TVAL_IS_FASTINT(tv_key)) { - arr_idx = duk__tval_fastint_to_arr_idx(tv_key); - DUK_DDD(DUK_DDDPRINT("base object buffer, key is a fast-path fastint; arr_idx %ld", (long) arr_idx)); - pop_count = 0; - } else -#endif - if (DUK_TVAL_IS_NUMBER(tv_key)) { - arr_idx = duk__tval_number_to_arr_idx(tv_key); - DUK_DDD(DUK_DDDPRINT("base object buffer, key is a fast-path number; arr_idx %ld", (long) arr_idx)); - pop_count = 0; - } else { - arr_idx = duk__push_tval_to_property_key(thr, tv_key, &key); - DUK_ASSERT(key != NULL); - DUK_DDD(DUK_DDDPRINT("base object buffer, key is a non-fast-path number; after " - "coercion key is %!T, arr_idx %ld", - (duk_tval *) duk_get_tval(thr, -1), - (long) arr_idx)); - pop_count = 1; - } - - if (arr_idx != DUK__NO_ARRAY_INDEX && arr_idx < DUK_HBUFFER_GET_SIZE(h)) { - duk_uint8_t *data; - DUK_DDD(DUK_DDDPRINT("writing to buffer data at index %ld", (long) arr_idx)); - data = (duk_uint8_t *) DUK_HBUFFER_GET_DATA_PTR(thr->heap, h); - - /* XXX: duk_to_int() ensures we'll get 8 lowest bits as - * as input is within duk_int_t range (capped outside it). - */ -#if defined(DUK_USE_FASTINT) - /* Buffer writes are often integers. */ - if (DUK_TVAL_IS_FASTINT(tv_val)) { - data[arr_idx] = (duk_uint8_t) DUK_TVAL_GET_FASTINT_U32(tv_val); - } else -#endif - { - duk_push_tval(thr, tv_val); - data[arr_idx] = (duk_uint8_t) duk_to_uint32(thr, -1); - pop_count++; - } - - duk_pop_n_unsafe(thr, pop_count); - DUK_DDD(DUK_DDDPRINT("result: success (buffer data write)")); - DUK_STATS_INC(thr->heap, stats_putprop_bufferidx); - return 1; - } - - if (pop_count == 0) { - /* This is a pretty awkward control flow, but we need to recheck the - * key coercion here. - */ - arr_idx = duk__push_tval_to_property_key(thr, tv_key, &key); - DUK_ASSERT(key != NULL); - DUK_DDD(DUK_DDDPRINT("base object buffer, key is a non-fast-path number; after " - "coercion key is %!T, arr_idx %ld", - (duk_tval *) duk_get_tval(thr, -1), - (long) arr_idx)); - } - - if (key == DUK_HTHREAD_STRING_LENGTH(thr)) { - goto fail_not_writable; - } - - DUK_DDD(DUK_DDDPRINT("base object is a buffer, start lookup from Uint8Array prototype")); - curr = thr->builtins[DUK_BIDX_UINT8ARRAY_PROTOTYPE]; - goto lookup; /* avoid double coercion */ - } - - case DUK_TAG_POINTER: { - DUK_DDD(DUK_DDDPRINT("base object is a pointer, start lookup from pointer prototype")); - curr = thr->builtins[DUK_BIDX_POINTER_PROTOTYPE]; - break; - } - - case DUK_TAG_LIGHTFUNC: { - /* Lightfuncs have no own properties and are considered non-extensible. - * However, the write may be captured by an inherited setter which - * means we can't stop the lookup here. - */ - DUK_DDD(DUK_DDDPRINT("base object is a lightfunc, start lookup from function prototype")); - curr = thr->builtins[DUK_BIDX_NATIVE_FUNCTION_PROTOTYPE]; - break; - } - -#if defined(DUK_USE_FASTINT) - case DUK_TAG_FASTINT: -#endif - default: { - /* number */ - DUK_DDD(DUK_DDDPRINT("base object is a number, start lookup from number prototype")); - DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv_obj)); - curr = thr->builtins[DUK_BIDX_NUMBER_PROTOTYPE]; - break; - } - } - - DUK_ASSERT(key == NULL); - arr_idx = duk__push_tval_to_property_key(thr, tv_key, &key); - DUK_ASSERT(key != NULL); - -lookup: - - /* - * Check whether the property already exists in the prototype chain. - * Note that the actual write goes into the original base object - * (except if an accessor property captures the write). - */ - - /* [key] */ - - DUK_ASSERT(curr != NULL); - sanity = DUK_HOBJECT_PROTOTYPE_CHAIN_SANITY; - do { - if (!duk__get_own_propdesc_raw(thr, curr, key, arr_idx, &desc, 0 /*flags*/)) { /* don't push value */ - goto next_in_chain; - } - - if (desc.flags & DUK_PROPDESC_FLAG_ACCESSOR) { - /* - * Found existing accessor property (own or inherited). - * Call setter with 'this' set to orig, and value as the only argument. - * Setter calls are OK even for ROM objects. - * - * Note: no exotic arguments object behavior, because [[Put]] never - * calls [[DefineOwnProperty]] (E5 Section 8.12.5, step 5.b). - */ - - duk_hobject *setter; - - DUK_DD(DUK_DDPRINT("put to an own or inherited accessor, calling setter")); - - setter = DUK_HOBJECT_E_GET_VALUE_SETTER(thr->heap, curr, desc.e_idx); - if (!setter) { - goto fail_no_setter; - } - duk_push_hobject(thr, setter); - duk_push_tval(thr, tv_obj); /* note: original, uncoerced base */ - duk_push_tval(thr, tv_val); /* [key setter this val] */ -#if defined(DUK_USE_NONSTD_SETTER_KEY_ARGUMENT) - duk_dup_m4(thr); - duk_call_method(thr, 2); /* [key setter this val key] -> [key retval] */ -#else - duk_call_method(thr, 1); /* [key setter this val] -> [key retval] */ -#endif - duk_pop_unsafe(thr); /* ignore retval -> [key] */ - goto success_no_arguments_exotic; - } - - if (orig == NULL) { - /* - * Found existing own or inherited plain property, but original - * base is a primitive value. - */ - DUK_DD(DUK_DDPRINT("attempt to create a new property in a primitive base object")); - goto fail_base_primitive; - } - - if (curr != orig) { - /* - * Found existing inherited plain property. - * Do an access control check, and if OK, write - * new property to 'orig'. - */ - if (!DUK_HOBJECT_HAS_EXTENSIBLE(orig)) { - DUK_DD( - DUK_DDPRINT("found existing inherited plain property, but original object is not extensible")); - goto fail_not_extensible; - } - if (!(desc.flags & DUK_PROPDESC_FLAG_WRITABLE)) { - DUK_DD(DUK_DDPRINT("found existing inherited plain property, original object is extensible, but " - "inherited property is not writable")); - goto fail_not_writable; - } - DUK_DD(DUK_DDPRINT("put to new property, object extensible, inherited property found and is writable")); - goto create_new; - } else { - /* - * Found existing own (non-inherited) plain property. - * Do an access control check and update in place. - */ - - if (!(desc.flags & DUK_PROPDESC_FLAG_WRITABLE)) { - DUK_DD( - DUK_DDPRINT("found existing own (non-inherited) plain property, but property is not writable")); - goto fail_not_writable; - } - if (desc.flags & DUK_PROPDESC_FLAG_VIRTUAL) { - DUK_DD(DUK_DDPRINT("found existing own (non-inherited) virtual property, property is writable")); - - if (DUK_HOBJECT_IS_ARRAY(curr)) { - /* - * Write to 'length' of an array is a very complex case - * handled in a helper which updates both the array elements - * and writes the new 'length'. The write may result in an - * unconditional RangeError or a partial write (indicated - * by a return code). - * - * Note: the helper has an unnecessary writability check - * for 'length', we already know it is writable. - */ - DUK_ASSERT(key == DUK_HTHREAD_STRING_LENGTH(thr)); /* only virtual array property */ - - DUK_DDD(DUK_DDDPRINT( - "writing existing 'length' property to array exotic, invoke complex helper")); - - /* XXX: the helper currently assumes stack top contains new - * 'length' value and the whole calling convention is not very - * compatible with what we need. - */ - - duk_push_tval(thr, tv_val); /* [key val] */ - rc = duk__handle_put_array_length(thr, orig); - duk_pop_unsafe(thr); /* [key val] -> [key] */ - if (!rc) { - goto fail_array_length_partial; - } - - /* key is 'length', cannot match argument exotic behavior */ - goto success_no_arguments_exotic; - } -#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) - else if (DUK_HOBJECT_IS_BUFOBJ(curr)) { - duk_hbufobj *h_bufobj; - duk_uint_t byte_off; - duk_small_uint_t elem_size; - - h_bufobj = (duk_hbufobj *) curr; - DUK_HBUFOBJ_ASSERT_VALID(h_bufobj); - - DUK_DD(DUK_DDPRINT("writable virtual property is in buffer object")); - - /* Careful with wrapping: arr_idx upshift may easily wrap, whereas - * length downshift won't. - */ - if (arr_idx < (h_bufobj->length >> h_bufobj->shift) && - DUK_HBUFOBJ_HAS_VIRTUAL_INDICES(h_bufobj)) { - duk_uint8_t *data; - DUK_DDD(DUK_DDDPRINT("writing to buffer data at index %ld", (long) arr_idx)); - - DUK_ASSERT(arr_idx != DUK__NO_ARRAY_INDEX); /* index/length check guarantees */ - byte_off = arr_idx - << h_bufobj->shift; /* no wrap assuming h_bufobj->length is valid */ - elem_size = (duk_small_uint_t) (1U << h_bufobj->shift); - - /* Coerce to number before validating pointers etc so that the - * number coercions in duk_hbufobj_validated_write() are - * guaranteed to be side effect free and not invalidate the - * pointer checks we do here. - */ - duk_push_tval(thr, tv_val); - (void) duk_to_number_m1(thr); - - if (h_bufobj->buf != NULL && - DUK_HBUFOBJ_VALID_BYTEOFFSET_EXCL(h_bufobj, byte_off + elem_size)) { - data = (duk_uint8_t *) DUK_HBUFFER_GET_DATA_PTR(thr->heap, h_bufobj->buf) + - h_bufobj->offset + byte_off; - duk_hbufobj_validated_write(thr, h_bufobj, data, elem_size); - } else { - DUK_D(DUK_DPRINT( - "bufobj access out of underlying buffer, ignoring (write skipped)")); - } - duk_pop_unsafe(thr); - goto success_no_arguments_exotic; - } - } -#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */ - - DUK_D(DUK_DPRINT("should not happen, key %!O", key)); - goto fail_internal; /* should not happen */ - } - DUK_DD(DUK_DDPRINT("put to existing own plain property, property is writable")); - goto update_old; - } - DUK_UNREACHABLE(); - - next_in_chain: - /* XXX: option to pretend property doesn't exist if sanity limit is - * hit might be useful. - */ - if (DUK_UNLIKELY(sanity-- == 0)) { - DUK_ERROR_RANGE(thr, DUK_STR_PROTOTYPE_CHAIN_LIMIT); - DUK_WO_NORETURN(return 0;); - } - curr = DUK_HOBJECT_GET_PROTOTYPE(thr->heap, curr); - } while (curr != NULL); - - /* - * Property not found in prototype chain. - */ - - DUK_DDD(DUK_DDDPRINT("property not found in prototype chain")); - - if (orig == NULL) { - DUK_DD(DUK_DDPRINT("attempt to create a new property in a primitive base object")); - goto fail_base_primitive; - } - - if (!DUK_HOBJECT_HAS_EXTENSIBLE(orig)) { - DUK_DD(DUK_DDPRINT("put to a new property (not found in prototype chain), but original object not extensible")); - goto fail_not_extensible; - } - - goto create_new; - -update_old: - - /* - * Update an existing property of the base object. - */ - - /* [key] */ - - DUK_DDD(DUK_DDDPRINT("update an existing property of the original object")); - - DUK_ASSERT(orig != NULL); -#if defined(DUK_USE_ROM_OBJECTS) - /* This should not happen because DUK_TAG_OBJECT case checks - * for this already, but check just in case. - */ - if (DUK_HEAPHDR_HAS_READONLY((duk_heaphdr *) orig)) { - goto fail_not_writable; - } -#endif - - /* Although there are writable virtual properties (e.g. plain buffer - * and buffer object number indices), they are handled before we come - * here. - */ - DUK_ASSERT((desc.flags & DUK_PROPDESC_FLAG_VIRTUAL) == 0); - DUK_ASSERT(desc.a_idx >= 0 || desc.e_idx >= 0); - - /* Array own property .length is handled above. */ - DUK_ASSERT(!(DUK_HOBJECT_IS_ARRAY(orig) && key == DUK_HTHREAD_STRING_LENGTH(thr))); - - if (desc.e_idx >= 0) { - tv = DUK_HOBJECT_E_GET_VALUE_TVAL_PTR(thr->heap, orig, desc.e_idx); - DUK_DDD(DUK_DDDPRINT("previous entry value: %!iT", (duk_tval *) tv)); - DUK_TVAL_SET_TVAL_UPDREF(thr, tv, tv_val); /* side effects; e_idx may be invalidated */ - /* don't touch property attributes or hash part */ - DUK_DD(DUK_DDPRINT("put to an existing entry at index %ld -> new value %!iT", (long) desc.e_idx, (duk_tval *) tv)); - } else { - /* Note: array entries are always writable, so the writability check - * above is pointless for them. The check could be avoided with some - * refactoring but is probably not worth it. - */ - - DUK_ASSERT(desc.a_idx >= 0); - tv = DUK_HOBJECT_A_GET_VALUE_PTR(thr->heap, orig, desc.a_idx); - DUK_DDD(DUK_DDDPRINT("previous array value: %!iT", (duk_tval *) tv)); - DUK_TVAL_SET_TVAL_UPDREF(thr, tv, tv_val); /* side effects; a_idx may be invalidated */ - DUK_DD(DUK_DDPRINT("put to an existing array entry at index %ld -> new value %!iT", - (long) desc.a_idx, - (duk_tval *) tv)); - } - - /* Regardless of whether property is found in entry or array part, - * it may have arguments exotic behavior (array indices may reside - * in entry part for abandoned / non-existent array parts). - */ - goto success_with_arguments_exotic; - -create_new: - - /* - * Create a new property in the original object. - * - * Exotic properties need to be reconsidered here from a write - * perspective (not just property attributes perspective). - * However, the property does not exist in the object already, - * so this limits the kind of exotic properties that apply. - */ - - /* [key] */ - - DUK_DDD(DUK_DDDPRINT("create new property to original object")); - - DUK_ASSERT(orig != NULL); - - /* Array own property .length is handled above. */ - DUK_ASSERT(!(DUK_HOBJECT_IS_ARRAY(orig) && key == DUK_HTHREAD_STRING_LENGTH(thr))); - -#if defined(DUK_USE_ROM_OBJECTS) - /* This should not happen because DUK_TAG_OBJECT case checks - * for this already, but check just in case. - */ - if (DUK_HEAPHDR_HAS_READONLY((duk_heaphdr *) orig)) { - goto fail_not_writable; - } -#endif - - /* Not possible because array object 'length' is present - * from its creation and cannot be deleted, and is thus - * caught as an existing property above. - */ - DUK_ASSERT(!(DUK_HOBJECT_HAS_EXOTIC_ARRAY(orig) && key == DUK_HTHREAD_STRING_LENGTH(thr))); - - if (DUK_HOBJECT_HAS_EXOTIC_ARRAY(orig) && arr_idx != DUK__NO_ARRAY_INDEX) { - /* automatic length update */ - duk_uint32_t old_len; - duk_harray *a; - - a = (duk_harray *) orig; - DUK_HARRAY_ASSERT_VALID(a); - - old_len = a->length; - - if (arr_idx >= old_len) { - DUK_DDD(DUK_DDDPRINT("write new array entry requires length update " - "(arr_idx=%ld, old_len=%ld)", - (long) arr_idx, - (long) old_len)); - - if (DUK_HARRAY_LENGTH_NONWRITABLE(a)) { - DUK_DD(DUK_DDPRINT("attempt to extend array, but array 'length' is not writable")); - goto fail_not_writable; - } - - /* Note: actual update happens once write has been completed - * without error below. The write should always succeed - * from a specification viewpoint, but we may e.g. run out - * of memory. It's safer in this order. - */ - - DUK_ASSERT(arr_idx != 0xffffffffUL); - new_array_length = arr_idx + 1; /* flag for later write */ - } else { - DUK_DDD(DUK_DDDPRINT("write new array entry does not require length update " - "(arr_idx=%ld, old_len=%ld)", - (long) arr_idx, - (long) old_len)); - } - } - - /* write_to_array_part: */ - - /* - * Write to array part? - * - * Note: array abandonding requires a property resize which uses - * 'rechecks' valstack for temporaries and may cause any existing - * valstack pointers to be invalidated. To protect against this, - * tv_obj, tv_key, and tv_val are copies of the original inputs. - */ - - if (arr_idx != DUK__NO_ARRAY_INDEX && DUK_HOBJECT_HAS_ARRAY_PART(orig)) { - tv = duk__obtain_arridx_slot(thr, arr_idx, orig); - if (tv == NULL) { - DUK_ASSERT(!DUK_HOBJECT_HAS_ARRAY_PART(orig)); - goto write_to_entry_part; - } - - /* prev value must be unused, no decref */ - DUK_ASSERT(DUK_TVAL_IS_UNUSED(tv)); - DUK_TVAL_SET_TVAL(tv, tv_val); - DUK_TVAL_INCREF(thr, tv); - DUK_DD(DUK_DDPRINT("put to new array entry: %ld -> %!T", (long) arr_idx, (duk_tval *) tv)); - - /* Note: array part values are [[Writable]], [[Enumerable]], - * and [[Configurable]] which matches the required attributes - * here. - */ - goto entry_updated; - } - -write_to_entry_part: - - /* - * Write to entry part - */ - - /* entry allocation updates hash part and increases the key - * refcount; may need a props allocation resize but doesn't - * 'recheck' the valstack. - */ - e_idx = duk__hobject_alloc_entry_checked(thr, orig, key); - DUK_ASSERT(e_idx >= 0); - - tv = DUK_HOBJECT_E_GET_VALUE_TVAL_PTR(thr->heap, orig, e_idx); - /* prev value can be garbage, no decref */ - DUK_TVAL_SET_TVAL(tv, tv_val); - DUK_TVAL_INCREF(thr, tv); - DUK_HOBJECT_E_SET_FLAGS(thr->heap, orig, e_idx, DUK_PROPDESC_FLAGS_WEC); - goto entry_updated; - -entry_updated: - - /* - * Possible pending array length update, which must only be done - * if the actual entry write succeeded. - */ - - if (new_array_length > 0) { - /* Note: zero works as a "no update" marker because the new length - * can never be zero after a new property is written. - */ - - DUK_ASSERT(DUK_HOBJECT_HAS_EXOTIC_ARRAY(orig)); - - DUK_DDD(DUK_DDDPRINT("write successful, pending array length update to: %ld", (long) new_array_length)); - - ((duk_harray *) orig)->length = new_array_length; - } - - /* - * Arguments exotic behavior not possible for new properties: all - * magically bound properties are initially present in the arguments - * object, and if they are deleted, the binding is also removed from - * parameter map. - */ - - goto success_no_arguments_exotic; - -success_with_arguments_exotic: - - /* - * Arguments objects have exotic [[DefineOwnProperty]] which updates - * the internal 'map' of arguments for writes to currently mapped - * arguments. More conretely, writes to mapped arguments generate - * a write to a bound variable. - * - * The [[Put]] algorithm invokes [[DefineOwnProperty]] for existing - * data properties and new properties, but not for existing accessors. - * Hence, in E5 Section 10.6 ([[DefinedOwnProperty]] algorithm), we - * have a Desc with 'Value' (and possibly other properties too), and - * we end up in step 5.b.i. - */ - - if (arr_idx != DUK__NO_ARRAY_INDEX && DUK_HOBJECT_HAS_EXOTIC_ARGUMENTS(orig)) { - /* Note: only numbered indices are relevant, so arr_idx fast reject - * is good (this is valid unless there are more than 4**32-1 arguments). - */ - - DUK_DDD(DUK_DDDPRINT("putprop successful, arguments exotic behavior needed")); - - /* Note: we can reuse 'desc' here */ - - /* XXX: top of stack must contain value, which helper doesn't touch, - * rework to use tv_val directly? - */ - - duk_push_tval(thr, tv_val); - (void) duk__check_arguments_map_for_put(thr, orig, key, &desc, throw_flag); - duk_pop_unsafe(thr); - } - /* fall thru */ - -success_no_arguments_exotic: - /* shared exit path now */ - DUK_DDD(DUK_DDDPRINT("result: success")); - duk_pop_unsafe(thr); /* remove key */ - return 1; - -#if defined(DUK_USE_ES6_PROXY) -fail_proxy_rejected: - DUK_DDD(DUK_DDDPRINT("result: error, proxy rejects")); - if (throw_flag) { - DUK_ERROR_TYPE(thr, DUK_STR_PROXY_REJECTED); - DUK_WO_NORETURN(return 0;); - } - /* Note: no key on stack */ - return 0; -#endif - -fail_base_primitive: - DUK_DDD(DUK_DDDPRINT("result: error, base primitive")); - if (throw_flag) { -#if defined(DUK_USE_PARANOID_ERRORS) - DUK_ERROR_TYPE(thr, DUK_STR_INVALID_BASE); -#else - DUK_ERROR_FMT2(thr, - DUK_ERR_TYPE_ERROR, - "cannot write property %s of %s", - duk_push_string_tval_readable(thr, tv_key), - duk_push_string_tval_readable(thr, tv_obj)); -#endif - DUK_WO_NORETURN(return 0;); - } - duk_pop_unsafe(thr); /* remove key */ - return 0; - -fail_not_extensible: - DUK_DDD(DUK_DDDPRINT("result: error, not extensible")); - if (throw_flag) { - DUK_ERROR_TYPE(thr, DUK_STR_NOT_EXTENSIBLE); - DUK_WO_NORETURN(return 0;); - } - duk_pop_unsafe(thr); /* remove key */ - return 0; - -fail_not_writable: - DUK_DDD(DUK_DDDPRINT("result: error, not writable")); - if (throw_flag) { - DUK_ERROR_TYPE(thr, DUK_STR_NOT_WRITABLE); - DUK_WO_NORETURN(return 0;); - } - duk_pop_unsafe(thr); /* remove key */ - return 0; - -#if defined(DUK_USE_ROM_OBJECTS) -fail_not_writable_no_pop: - DUK_DDD(DUK_DDDPRINT("result: error, not writable")); - if (throw_flag) { - DUK_ERROR_TYPE(thr, DUK_STR_NOT_WRITABLE); - DUK_WO_NORETURN(return 0;); - } - return 0; -#endif - -fail_array_length_partial: - DUK_DD(DUK_DDPRINT("result: error, array length write only partially successful")); - if (throw_flag) { - DUK_ERROR_TYPE(thr, DUK_STR_NOT_CONFIGURABLE); - DUK_WO_NORETURN(return 0;); - } - duk_pop_unsafe(thr); /* remove key */ - return 0; - -fail_no_setter: - DUK_DDD(DUK_DDDPRINT("result: error, accessor property without setter")); - if (throw_flag) { - DUK_ERROR_TYPE(thr, DUK_STR_SETTER_UNDEFINED); - DUK_WO_NORETURN(return 0;); - } - duk_pop_unsafe(thr); /* remove key */ - return 0; - -fail_internal: - DUK_DDD(DUK_DDDPRINT("result: error, internal")); - if (throw_flag) { - DUK_ERROR_INTERNAL(thr); - DUK_WO_NORETURN(return 0;); - } - duk_pop_unsafe(thr); /* remove key */ - return 0; -} - -/* - * ECMAScript compliant [[Delete]](P, Throw). - */ - -DUK_INTERNAL duk_bool_t duk_hobject_delprop_raw(duk_hthread *thr, duk_hobject *obj, duk_hstring *key, duk_small_uint_t flags) { - duk_propdesc desc; - duk_tval *tv; - duk_uint32_t arr_idx; - duk_bool_t throw_flag; - duk_bool_t force_flag; - - throw_flag = (flags & DUK_DELPROP_FLAG_THROW); - force_flag = (flags & DUK_DELPROP_FLAG_FORCE); - - DUK_DDD(DUK_DDDPRINT("delprop_raw: thr=%p, obj=%p, key=%p, throw=%ld, force=%ld (obj -> %!O, key -> %!O)", - (void *) thr, - (void *) obj, - (void *) key, - (long) throw_flag, - (long) force_flag, - (duk_heaphdr *) obj, - (duk_heaphdr *) key)); - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(thr->heap != NULL); - DUK_ASSERT(obj != NULL); - DUK_ASSERT(key != NULL); - - DUK_ASSERT_VALSTACK_SPACE(thr, DUK__VALSTACK_SPACE); - - arr_idx = DUK_HSTRING_GET_ARRIDX_FAST(key); - - /* 0 = don't push current value */ - if (!duk__get_own_propdesc_raw(thr, obj, key, arr_idx, &desc, 0 /*flags*/)) { /* don't push value */ - DUK_DDD(DUK_DDDPRINT("property not found, succeed always")); - goto success; - } - -#if defined(DUK_USE_ROM_OBJECTS) - if (DUK_HEAPHDR_HAS_READONLY((duk_heaphdr *) obj)) { - DUK_DD(DUK_DDPRINT("attempt to delprop on read-only target object")); - goto fail_not_configurable; - } -#endif - - if ((desc.flags & DUK_PROPDESC_FLAG_CONFIGURABLE) == 0 && !force_flag) { - goto fail_not_configurable; - } - if (desc.a_idx < 0 && desc.e_idx < 0) { - /* Currently there are no deletable virtual properties, but - * with force_flag we might attempt to delete one. - */ - DUK_DD(DUK_DDPRINT("delete failed: property found, force flag, but virtual (and implicitly non-configurable)")); - goto fail_virtual; - } - - if (desc.a_idx >= 0) { - DUK_ASSERT(desc.e_idx < 0); - - tv = DUK_HOBJECT_A_GET_VALUE_PTR(thr->heap, obj, desc.a_idx); - DUK_TVAL_SET_UNUSED_UPDREF(thr, tv); /* side effects */ - goto success; - } else { - DUK_ASSERT(desc.a_idx < 0); - - /* remove hash entry (no decref) */ -#if defined(DUK_USE_HOBJECT_HASH_PART) - if (desc.h_idx >= 0) { - duk_uint32_t *h_base = DUK_HOBJECT_H_GET_BASE(thr->heap, obj); - - DUK_DDD(DUK_DDDPRINT("removing hash entry at h_idx %ld", (long) desc.h_idx)); - DUK_ASSERT(DUK_HOBJECT_GET_HSIZE(obj) > 0); - DUK_ASSERT((duk_uint32_t) desc.h_idx < DUK_HOBJECT_GET_HSIZE(obj)); - h_base[desc.h_idx] = DUK__HASH_DELETED; - } else { - DUK_ASSERT(DUK_HOBJECT_GET_HSIZE(obj) == 0); - } -#else - DUK_ASSERT(DUK_HOBJECT_GET_HSIZE(obj) == 0); -#endif - - /* Remove value. This requires multiple writes so avoid side - * effects via no-refzero macros so that e_idx is not - * invalidated. - */ - DUK_DDD(DUK_DDDPRINT("before removing value, e_idx %ld, key %p, key at slot %p", - (long) desc.e_idx, - (void *) key, - (void *) DUK_HOBJECT_E_GET_KEY(thr->heap, obj, desc.e_idx))); - DUK_DDD(DUK_DDDPRINT("removing value at e_idx %ld", (long) desc.e_idx)); - if (DUK_HOBJECT_E_SLOT_IS_ACCESSOR(thr->heap, obj, desc.e_idx)) { - duk_hobject *tmp; - - tmp = DUK_HOBJECT_E_GET_VALUE_GETTER(thr->heap, obj, desc.e_idx); - DUK_HOBJECT_E_SET_VALUE_GETTER(thr->heap, obj, desc.e_idx, NULL); - DUK_UNREF(tmp); - DUK_HOBJECT_DECREF_NORZ_ALLOWNULL(thr, tmp); - - tmp = DUK_HOBJECT_E_GET_VALUE_SETTER(thr->heap, obj, desc.e_idx); - DUK_HOBJECT_E_SET_VALUE_SETTER(thr->heap, obj, desc.e_idx, NULL); - DUK_UNREF(tmp); - DUK_HOBJECT_DECREF_NORZ_ALLOWNULL(thr, tmp); - } else { - tv = DUK_HOBJECT_E_GET_VALUE_TVAL_PTR(thr->heap, obj, desc.e_idx); - DUK_TVAL_SET_UNDEFINED_UPDREF_NORZ(thr, tv); - } -#if 0 - /* Not strictly necessary because if key == NULL, flag MUST be ignored. */ - DUK_HOBJECT_E_SET_FLAGS(thr->heap, obj, desc.e_idx, 0); -#endif - - /* Remove key. */ - DUK_DDD(DUK_DDDPRINT("before removing key, e_idx %ld, key %p, key at slot %p", - (long) desc.e_idx, - (void *) key, - (void *) DUK_HOBJECT_E_GET_KEY(thr->heap, obj, desc.e_idx))); - DUK_DDD(DUK_DDDPRINT("removing key at e_idx %ld", (long) desc.e_idx)); - DUK_ASSERT(key == DUK_HOBJECT_E_GET_KEY(thr->heap, obj, desc.e_idx)); - DUK_HOBJECT_E_SET_KEY(thr->heap, obj, desc.e_idx, NULL); - DUK_HSTRING_DECREF_NORZ(thr, key); - - /* Trigger refzero side effects only when we're done as a - * finalizer might operate on the object and affect the - * e_idx we're supposed to use. - */ - DUK_REFZERO_CHECK_SLOW(thr); - goto success; - } - - DUK_UNREACHABLE(); - -success: - /* - * Argument exotic [[Delete]] behavior (E5 Section 10.6) is - * a post-check, keeping arguments internal 'map' in sync with - * any successful deletes (note that property does not need to - * exist for delete to 'succeed'). - * - * Delete key from 'map'. Since 'map' only contains array index - * keys, we can use arr_idx for a fast skip. - */ - - DUK_DDD(DUK_DDDPRINT("delete successful, check for arguments exotic behavior")); - - if (arr_idx != DUK__NO_ARRAY_INDEX && DUK_HOBJECT_HAS_EXOTIC_ARGUMENTS(obj)) { - /* Note: only numbered indices are relevant, so arr_idx fast reject - * is good (this is valid unless there are more than 4**32-1 arguments). - */ - - DUK_DDD(DUK_DDDPRINT("delete successful, arguments exotic behavior needed")); - - /* Note: we can reuse 'desc' here */ - (void) duk__check_arguments_map_for_delete(thr, obj, key, &desc); - } - - DUK_DDD(DUK_DDDPRINT("delete successful")); - return 1; - -fail_virtual: /* just use the same "not configurable" error message */ -fail_not_configurable: - DUK_DDD(DUK_DDDPRINT("delete failed: property found, not configurable")); - - if (throw_flag) { - DUK_ERROR_TYPE(thr, DUK_STR_NOT_CONFIGURABLE); - DUK_WO_NORETURN(return 0;); - } - return 0; -} - -/* - * DELPROP: ECMAScript property deletion. - */ - -DUK_INTERNAL duk_bool_t duk_hobject_delprop(duk_hthread *thr, duk_tval *tv_obj, duk_tval *tv_key, duk_bool_t throw_flag) { - duk_hstring *key = NULL; -#if defined(DUK_USE_ES6_PROXY) - duk_propdesc desc; -#endif - duk_int_t entry_top; - duk_uint32_t arr_idx = DUK__NO_ARRAY_INDEX; - duk_bool_t rc; - - DUK_DDD(DUK_DDDPRINT("delprop: thr=%p, obj=%p, key=%p (obj -> %!T, key -> %!T)", - (void *) thr, - (void *) tv_obj, - (void *) tv_key, - (duk_tval *) tv_obj, - (duk_tval *) tv_key)); - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(thr->heap != NULL); - DUK_ASSERT(tv_obj != NULL); - DUK_ASSERT(tv_key != NULL); - - DUK_ASSERT_VALSTACK_SPACE(thr, DUK__VALSTACK_SPACE); - - /* Storing the entry top is cheaper here to ensure stack is correct at exit, - * as there are several paths out. - */ - entry_top = duk_get_top(thr); - - if (DUK_TVAL_IS_UNDEFINED(tv_obj) || DUK_TVAL_IS_NULL(tv_obj)) { - DUK_DDD(DUK_DDDPRINT("base object is undefined or null -> reject")); - goto fail_invalid_base_uncond; - } - - duk_push_tval(thr, tv_obj); - duk_push_tval(thr, tv_key); - - tv_obj = DUK_GET_TVAL_NEGIDX(thr, -2); - if (DUK_TVAL_IS_OBJECT(tv_obj)) { - duk_hobject *obj = DUK_TVAL_GET_OBJECT(tv_obj); - DUK_ASSERT(obj != NULL); - -#if defined(DUK_USE_ES6_PROXY) - if (DUK_UNLIKELY(DUK_HOBJECT_IS_PROXY(obj))) { - duk_hobject *h_target; - duk_bool_t tmp_bool; - - /* Note: proxy handling must happen before key is string coerced. */ - - if (duk__proxy_check_prop(thr, obj, DUK_STRIDX_DELETE_PROPERTY, tv_key, &h_target)) { - /* -> [ ... obj key trap handler ] */ - DUK_DDD(DUK_DDDPRINT("-> proxy object 'deleteProperty' for key %!T", (duk_tval *) tv_key)); - duk_push_hobject(thr, h_target); /* target */ - duk_dup_m4(thr); /* P */ - duk_call_method(thr, 2 /*nargs*/); - tmp_bool = duk_to_boolean_top_pop(thr); - if (!tmp_bool) { - goto fail_proxy_rejected; /* retval indicates delete failed */ - } - - /* Target object must be checked for a conflicting - * non-configurable property. - */ - tv_key = DUK_GET_TVAL_NEGIDX(thr, -1); - arr_idx = duk__push_tval_to_property_key(thr, tv_key, &key); - DUK_ASSERT(key != NULL); - - if (duk__get_own_propdesc_raw(thr, h_target, key, arr_idx, &desc, 0 /*flags*/)) { /* don't push - value */ - duk_small_int_t desc_reject; - - DUK_DDD(DUK_DDDPRINT("proxy 'deleteProperty': target has matching property %!O, check for " - "conflicting property; desc.flags=0x%08lx, " - "desc.get=%p, desc.set=%p", - (duk_heaphdr *) key, - (unsigned long) desc.flags, - (void *) desc.get, - (void *) desc.set)); - - desc_reject = !(desc.flags & DUK_PROPDESC_FLAG_CONFIGURABLE); - if (desc_reject) { - /* unconditional */ - DUK_ERROR_TYPE(thr, DUK_STR_PROXY_REJECTED); - DUK_WO_NORETURN(return 0;); - } - } - rc = 1; /* success */ - goto done_rc; - } - - obj = h_target; /* resume delete to target */ - } -#endif /* DUK_USE_ES6_PROXY */ - - arr_idx = duk__to_property_key(thr, -1, &key); - DUK_ASSERT(key != NULL); - - rc = duk_hobject_delprop_raw(thr, obj, key, throw_flag ? DUK_DELPROP_FLAG_THROW : 0); - goto done_rc; - } else if (DUK_TVAL_IS_STRING(tv_obj)) { - /* String has .length and array index virtual properties - * which can't be deleted. No need for a symbol check; - * no offending virtual symbols exist. - */ - /* XXX: unnecessary string coercion for array indices, - * intentional to keep small. - */ - duk_hstring *h = DUK_TVAL_GET_STRING(tv_obj); - DUK_ASSERT(h != NULL); - - arr_idx = duk__to_property_key(thr, -1, &key); - DUK_ASSERT(key != NULL); - - if (key == DUK_HTHREAD_STRING_LENGTH(thr)) { - goto fail_not_configurable; - } - - if (arr_idx != DUK__NO_ARRAY_INDEX && arr_idx < DUK_HSTRING_GET_CHARLEN(h)) { - goto fail_not_configurable; - } - } else if (DUK_TVAL_IS_BUFFER(tv_obj)) { - /* XXX: unnecessary string coercion for array indices, - * intentional to keep small; some overlap with string - * handling. - */ - duk_hbuffer *h = DUK_TVAL_GET_BUFFER(tv_obj); - DUK_ASSERT(h != NULL); - - arr_idx = duk__to_property_key(thr, -1, &key); - DUK_ASSERT(key != NULL); - - if (key == DUK_HTHREAD_STRING_LENGTH(thr)) { - goto fail_not_configurable; - } - - if (arr_idx != DUK__NO_ARRAY_INDEX && arr_idx < DUK_HBUFFER_GET_SIZE(h)) { - goto fail_not_configurable; - } - } else if (DUK_TVAL_IS_LIGHTFUNC(tv_obj)) { - /* Lightfunc has no virtual properties since Duktape 2.2 - * so success. Still must coerce key for side effects. - */ - - arr_idx = duk__to_property_key(thr, -1, &key); - DUK_ASSERT(key != NULL); - DUK_UNREF(key); - } - - /* non-object base, no offending virtual property */ - rc = 1; - goto done_rc; - -done_rc: - duk_set_top_unsafe(thr, entry_top); - return rc; - -fail_invalid_base_uncond: - /* Note: unconditional throw */ - DUK_ASSERT(duk_get_top(thr) == entry_top); -#if defined(DUK_USE_PARANOID_ERRORS) - DUK_ERROR_TYPE(thr, DUK_STR_INVALID_BASE); -#else - DUK_ERROR_FMT2(thr, - DUK_ERR_TYPE_ERROR, - "cannot delete property %s of %s", - duk_push_string_tval_readable(thr, tv_key), - duk_push_string_tval_readable(thr, tv_obj)); -#endif - DUK_WO_NORETURN(return 0;); - -#if defined(DUK_USE_ES6_PROXY) -fail_proxy_rejected: - if (throw_flag) { - DUK_ERROR_TYPE(thr, DUK_STR_PROXY_REJECTED); - DUK_WO_NORETURN(return 0;); - } - duk_set_top_unsafe(thr, entry_top); - return 0; -#endif - -fail_not_configurable: - if (throw_flag) { - DUK_ERROR_TYPE(thr, DUK_STR_NOT_CONFIGURABLE); - DUK_WO_NORETURN(return 0;); - } - duk_set_top_unsafe(thr, entry_top); - return 0; -} - -/* - * Internal helper to define a property with specific flags, ignoring - * normal semantics such as extensibility, write protection etc. - * Overwrites any existing value and attributes unless caller requests - * that value only be updated if it doesn't already exists. - * - * Does not support: - * - virtual properties (error if write attempted) - * - getter/setter properties (error if write attempted) - * - non-default (!= WEC) attributes for array entries (error if attempted) - * - array abandoning: if array part exists, it is always extended - * - array 'length' updating - * - * Stack: [... in_val] -> [] - * - * Used for e.g. built-in initialization and environment record - * operations. - */ - -DUK_INTERNAL void duk_hobject_define_property_internal(duk_hthread *thr, - duk_hobject *obj, - duk_hstring *key, - duk_small_uint_t flags) { - duk_propdesc desc; - duk_uint32_t arr_idx; - duk_int_t e_idx; - duk_tval *tv1 = NULL; - duk_tval *tv2 = NULL; - duk_small_uint_t propflags = flags & DUK_PROPDESC_FLAGS_MASK; /* mask out flags not actually stored */ - - DUK_DDD(DUK_DDDPRINT("define new property (internal): thr=%p, obj=%!O, key=%!O, flags=0x%02lx, val=%!T", - (void *) thr, - (duk_heaphdr *) obj, - (duk_heaphdr *) key, - (unsigned long) flags, - (duk_tval *) duk_get_tval(thr, -1))); - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(thr->heap != NULL); - DUK_ASSERT(obj != NULL); - DUK_ASSERT(key != NULL); - DUK_ASSERT(!DUK_HEAPHDR_HAS_READONLY((duk_heaphdr *) obj)); - DUK_ASSERT_VALSTACK_SPACE(thr, DUK__VALSTACK_SPACE); - DUK_ASSERT(duk_is_valid_index(thr, -1)); /* contains value */ - - arr_idx = DUK_HSTRING_GET_ARRIDX_SLOW(key); - - if (duk__get_own_propdesc_raw(thr, obj, key, arr_idx, &desc, 0 /*flags*/)) { /* don't push value */ - if (desc.e_idx >= 0) { - if (flags & DUK_PROPDESC_FLAG_NO_OVERWRITE) { - DUK_DDD(DUK_DDDPRINT("property already exists in the entry part -> skip as requested")); - goto pop_exit; - } - DUK_DDD(DUK_DDDPRINT("property already exists in the entry part -> update value and attributes")); - if (DUK_UNLIKELY(DUK_HOBJECT_E_SLOT_IS_ACCESSOR(thr->heap, obj, desc.e_idx))) { - DUK_D(DUK_DPRINT("existing property is an accessor, not supported")); - goto error_internal; - } - - DUK_HOBJECT_E_SET_FLAGS(thr->heap, obj, desc.e_idx, propflags); - tv1 = DUK_HOBJECT_E_GET_VALUE_TVAL_PTR(thr->heap, obj, desc.e_idx); - } else if (desc.a_idx >= 0) { - if (flags & DUK_PROPDESC_FLAG_NO_OVERWRITE) { - DUK_DDD(DUK_DDDPRINT("property already exists in the array part -> skip as requested")); - goto pop_exit; - } - DUK_DDD(DUK_DDDPRINT("property already exists in the array part -> update value (assert attributes)")); - if (propflags != DUK_PROPDESC_FLAGS_WEC) { - DUK_D(DUK_DPRINT("existing property in array part, but propflags not WEC (0x%02lx)", - (unsigned long) propflags)); - goto error_internal; - } - - tv1 = DUK_HOBJECT_A_GET_VALUE_PTR(thr->heap, obj, desc.a_idx); - } else { - if (flags & DUK_PROPDESC_FLAG_NO_OVERWRITE) { - DUK_DDD(DUK_DDDPRINT("property already exists but is virtual -> skip as requested")); - goto pop_exit; - } - if (key == DUK_HTHREAD_STRING_LENGTH(thr) && DUK_HOBJECT_HAS_EXOTIC_ARRAY(obj)) { - duk_uint32_t new_len; -#if defined(DUK_USE_DEBUG) - duk_uint32_t prev_len; - prev_len = ((duk_harray *) obj)->length; -#endif - new_len = duk__to_new_array_length_checked(thr, DUK_GET_TVAL_NEGIDX(thr, -1)); - ((duk_harray *) obj)->length = new_len; - DUK_DD(DUK_DDPRINT("internal define property for array .length: %ld -> %ld", - (long) prev_len, - (long) ((duk_harray *) obj)->length)); - goto pop_exit; - } - DUK_DD(DUK_DDPRINT("property already exists but is virtual -> failure")); - goto error_virtual; - } - - goto write_value; - } - - if (DUK_HOBJECT_HAS_ARRAY_PART(obj)) { - if (arr_idx != DUK__NO_ARRAY_INDEX) { - DUK_DDD(DUK_DDDPRINT("property does not exist, object has array part -> possibly extend array part and " - "write value (assert attributes)")); - DUK_ASSERT(propflags == DUK_PROPDESC_FLAGS_WEC); - - tv1 = duk__obtain_arridx_slot(thr, arr_idx, obj); - if (tv1 == NULL) { - DUK_ASSERT(!DUK_HOBJECT_HAS_ARRAY_PART(obj)); - goto write_to_entry_part; - } - - tv1 = DUK_HOBJECT_A_GET_VALUE_PTR(thr->heap, obj, arr_idx); - goto write_value; - } - } - -write_to_entry_part: - DUK_DDD(DUK_DDDPRINT( - "property does not exist, object belongs in entry part -> allocate new entry and write value and attributes")); - e_idx = duk__hobject_alloc_entry_checked(thr, obj, key); /* increases key refcount */ - DUK_ASSERT(e_idx >= 0); - DUK_HOBJECT_E_SET_FLAGS(thr->heap, obj, e_idx, propflags); - tv1 = DUK_HOBJECT_E_GET_VALUE_TVAL_PTR(thr->heap, obj, e_idx); - /* new entry: previous value is garbage; set to undefined to share write_value */ - DUK_TVAL_SET_UNDEFINED(tv1); - goto write_value; - -write_value: - /* tv1 points to value storage */ - - tv2 = duk_require_tval(thr, -1); /* late lookup, avoid side effects */ - DUK_DDD(DUK_DDDPRINT("writing/updating value: %!T -> %!T", (duk_tval *) tv1, (duk_tval *) tv2)); - - DUK_TVAL_SET_TVAL_UPDREF(thr, tv1, tv2); /* side effects */ - goto pop_exit; - -pop_exit: - duk_pop_unsafe(thr); /* remove in_val */ - return; - -error_virtual: /* share error message */ -error_internal: - DUK_ERROR_INTERNAL(thr); - DUK_WO_NORETURN(return;); -} - -/* - * Fast path for defining array indexed values without interning the key. - * This is used by e.g. code for Array prototype and traceback creation so - * must avoid interning. - */ - -DUK_INTERNAL void duk_hobject_define_property_internal_arridx(duk_hthread *thr, - duk_hobject *obj, - duk_uarridx_t arr_idx, - duk_small_uint_t flags) { - duk_hstring *key; - duk_tval *tv1, *tv2; - - DUK_DDD(DUK_DDDPRINT("define new property (internal) arr_idx fast path: thr=%p, obj=%!O, " - "arr_idx=%ld, flags=0x%02lx, val=%!T", - (void *) thr, - obj, - (long) arr_idx, - (unsigned long) flags, - (duk_tval *) duk_get_tval(thr, -1))); - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(thr->heap != NULL); - DUK_ASSERT(obj != NULL); - DUK_ASSERT(!DUK_HEAPHDR_HAS_READONLY((duk_heaphdr *) obj)); - - if (DUK_HOBJECT_HAS_ARRAY_PART(obj) && arr_idx != DUK__NO_ARRAY_INDEX && flags == DUK_PROPDESC_FLAGS_WEC) { - DUK_ASSERT((flags & DUK_PROPDESC_FLAG_NO_OVERWRITE) == 0); /* covered by comparison */ - - DUK_DDD(DUK_DDDPRINT("define property to array part (property may or may not exist yet)")); - - tv1 = duk__obtain_arridx_slot(thr, arr_idx, obj); - if (tv1 == NULL) { - DUK_ASSERT(!DUK_HOBJECT_HAS_ARRAY_PART(obj)); - goto write_slow; - } - tv2 = duk_require_tval(thr, -1); - - DUK_TVAL_SET_TVAL_UPDREF(thr, tv1, tv2); /* side effects */ - - duk_pop_unsafe(thr); /* [ ...val ] -> [ ... ] */ - return; - } - -write_slow: - DUK_DDD(DUK_DDDPRINT("define property fast path didn't work, use slow path")); - - key = duk_push_uint_to_hstring(thr, (duk_uint_t) arr_idx); - DUK_ASSERT(key != NULL); - duk_insert(thr, -2); /* [ ... val key ] -> [ ... key val ] */ - - duk_hobject_define_property_internal(thr, obj, key, flags); - - duk_pop_unsafe(thr); /* [ ... key ] -> [ ... ] */ -} - -/* - * Internal helpers for managing object 'length' - */ - -DUK_INTERNAL duk_size_t duk_hobject_get_length(duk_hthread *thr, duk_hobject *obj) { - duk_double_t val; - - DUK_CTX_ASSERT_VALID(thr); - DUK_ASSERT(obj != NULL); - - /* Fast path for Arrays. */ - if (DUK_HOBJECT_HAS_EXOTIC_ARRAY(obj)) { - return ((duk_harray *) obj)->length; - } - - /* Slow path, .length can be e.g. accessor, obj can be a Proxy, etc. */ - duk_push_hobject(thr, obj); - duk_push_hstring_stridx(thr, DUK_STRIDX_LENGTH); - (void) duk_hobject_getprop(thr, DUK_GET_TVAL_NEGIDX(thr, -2), DUK_GET_TVAL_NEGIDX(thr, -1)); - val = duk_to_number_m1(thr); - duk_pop_3_unsafe(thr); - - /* This isn't part of ECMAScript semantics; return a value within - * duk_size_t range, or 0 otherwise. - */ - if (val >= 0.0 && val <= (duk_double_t) DUK_SIZE_MAX) { - return (duk_size_t) val; - } - return 0; -} - -/* - * Fast finalizer check for an object. Walks the prototype chain, checking - * for finalizer presence using DUK_HOBJECT_FLAG_HAVE_FINALIZER which is kept - * in sync with the actual property when setting/removing the finalizer. - */ - -#if defined(DUK_USE_HEAPPTR16) -DUK_INTERNAL duk_bool_t duk_hobject_has_finalizer_fast_raw(duk_heap *heap, duk_hobject *obj) { -#else -DUK_INTERNAL duk_bool_t duk_hobject_has_finalizer_fast_raw(duk_hobject *obj) { -#endif - duk_uint_t sanity; - - DUK_ASSERT(obj != NULL); - - sanity = DUK_HOBJECT_PROTOTYPE_CHAIN_SANITY; - do { - if (DUK_UNLIKELY(DUK_HOBJECT_HAS_HAVE_FINALIZER(obj))) { - return 1; - } - if (DUK_UNLIKELY(sanity-- == 0)) { - DUK_D(DUK_DPRINT("prototype loop when checking for finalizer existence; returning false")); - return 0; - } -#if defined(DUK_USE_HEAPPTR16) - DUK_ASSERT(heap != NULL); - obj = DUK_HOBJECT_GET_PROTOTYPE(heap, obj); -#else - obj = DUK_HOBJECT_GET_PROTOTYPE(NULL, obj); /* 'heap' arg ignored */ -#endif - } while (obj != NULL); - - return 0; -} - -/* - * Object.getOwnPropertyDescriptor() (E5 Sections 15.2.3.3, 8.10.4) - * - * [ ... key ] -> [ ... desc/undefined ] - */ - -DUK_INTERNAL void duk_hobject_object_get_own_property_descriptor(duk_hthread *thr, duk_idx_t obj_idx) { - duk_hobject *obj; - duk_hstring *key; - duk_propdesc pd; - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(thr->heap != NULL); - - obj = duk_require_hobject_promote_mask(thr, obj_idx, DUK_TYPE_MASK_LIGHTFUNC | DUK_TYPE_MASK_BUFFER); - key = duk_to_property_key_hstring(thr, -1); - DUK_ASSERT(key != NULL); - - DUK_ASSERT_VALSTACK_SPACE(thr, DUK__VALSTACK_SPACE); - - if (!duk_hobject_get_own_propdesc(thr, obj, key, &pd, DUK_GETDESC_FLAG_PUSH_VALUE)) { - duk_push_undefined(thr); - duk_remove_m2(thr); - return; - } - - duk_push_object(thr); - - /* [ ... key value desc ] */ - - if (DUK_PROPDESC_IS_ACCESSOR(&pd)) { - /* If a setter/getter is missing (undefined), the descriptor must - * still have the property present with the value 'undefined'. - */ - if (pd.get) { - duk_push_hobject(thr, pd.get); - } else { - duk_push_undefined(thr); - } - duk_put_prop_stridx_short(thr, -2, DUK_STRIDX_GET); - if (pd.set) { - duk_push_hobject(thr, pd.set); - } else { - duk_push_undefined(thr); - } - duk_put_prop_stridx_short(thr, -2, DUK_STRIDX_SET); - } else { - duk_dup_m2(thr); - duk_put_prop_stridx_short(thr, -2, DUK_STRIDX_VALUE); - duk_push_boolean(thr, DUK_PROPDESC_IS_WRITABLE(&pd)); - duk_put_prop_stridx_short(thr, -2, DUK_STRIDX_WRITABLE); - } - duk_push_boolean(thr, DUK_PROPDESC_IS_ENUMERABLE(&pd)); - duk_put_prop_stridx_short(thr, -2, DUK_STRIDX_ENUMERABLE); - duk_push_boolean(thr, DUK_PROPDESC_IS_CONFIGURABLE(&pd)); - duk_put_prop_stridx_short(thr, -2, DUK_STRIDX_CONFIGURABLE); - - /* [ ... key value desc ] */ - - duk_replace(thr, -3); - duk_pop_unsafe(thr); /* -> [ ... desc ] */ -} - -/* - * NormalizePropertyDescriptor() related helper. - * - * Internal helper which validates and normalizes a property descriptor - * represented as an ECMAScript object (e.g. argument to defineProperty()). - * The output of this conversion is a set of defprop_flags and possibly - * some values pushed on the value stack to (1) ensure borrowed pointers - * remain valid, and (2) avoid unnecessary pops for footprint reasons. - * Caller must manage stack top carefully because the number of values - * pushed depends on the input property descriptor. - * - * The original descriptor object must not be altered in the process. - */ - -/* XXX: very basic optimization -> duk_get_prop_stridx_top */ - -DUK_INTERNAL -void duk_hobject_prepare_property_descriptor(duk_hthread *thr, - duk_idx_t idx_in, - duk_uint_t *out_defprop_flags, - duk_idx_t *out_idx_value, - duk_hobject **out_getter, - duk_hobject **out_setter) { - duk_idx_t idx_value = -1; - duk_hobject *getter = NULL; - duk_hobject *setter = NULL; - duk_bool_t is_data_desc = 0; - duk_bool_t is_acc_desc = 0; - duk_uint_t defprop_flags = 0; - - DUK_ASSERT(out_defprop_flags != NULL); - DUK_ASSERT(out_idx_value != NULL); - DUK_ASSERT(out_getter != NULL); - DUK_ASSERT(out_setter != NULL); - DUK_ASSERT(idx_in <= 0x7fffL); /* short variants would be OK, but not used to avoid shifts */ - - /* Must be an object, otherwise TypeError (E5.1 Section 8.10.5, step 1). */ - idx_in = duk_require_normalize_index(thr, idx_in); - (void) duk_require_hobject(thr, idx_in); - - /* The coercion order must match the ToPropertyDescriptor() algorithm - * so that side effects in coercion happen in the correct order. - * (This order also happens to be compatible with duk_def_prop(), - * although it doesn't matter in practice.) - */ - - if (duk_get_prop_stridx(thr, idx_in, DUK_STRIDX_VALUE)) { - is_data_desc = 1; - defprop_flags |= DUK_DEFPROP_HAVE_VALUE; - idx_value = duk_get_top_index(thr); - } - - if (duk_get_prop_stridx(thr, idx_in, DUK_STRIDX_WRITABLE)) { - is_data_desc = 1; - if (duk_to_boolean_top_pop(thr)) { - defprop_flags |= DUK_DEFPROP_HAVE_WRITABLE | DUK_DEFPROP_WRITABLE; - } else { - defprop_flags |= DUK_DEFPROP_HAVE_WRITABLE; - } - } - - if (duk_get_prop_stridx(thr, idx_in, DUK_STRIDX_GET)) { - duk_tval *tv = duk_require_tval(thr, -1); - duk_hobject *h_get; - - if (DUK_TVAL_IS_UNDEFINED(tv)) { - /* undefined is accepted */ - DUK_ASSERT(getter == NULL); - } else { - /* NOTE: lightfuncs are coerced to full functions because - * lightfuncs don't fit into a property value slot. This - * has some side effects, see test-dev-lightfunc-accessor.js. - */ - h_get = duk_get_hobject_promote_lfunc(thr, -1); - if (h_get == NULL || !DUK_HOBJECT_IS_CALLABLE(h_get)) { - goto type_error; - } - getter = h_get; - } - is_acc_desc = 1; - defprop_flags |= DUK_DEFPROP_HAVE_GETTER; - } - - if (duk_get_prop_stridx(thr, idx_in, DUK_STRIDX_SET)) { - duk_tval *tv = duk_require_tval(thr, -1); - duk_hobject *h_set; - - if (DUK_TVAL_IS_UNDEFINED(tv)) { - /* undefined is accepted */ - DUK_ASSERT(setter == NULL); - } else { - /* NOTE: lightfuncs are coerced to full functions because - * lightfuncs don't fit into a property value slot. This - * has some side effects, see test-dev-lightfunc-accessor.js. - */ - h_set = duk_get_hobject_promote_lfunc(thr, -1); - if (h_set == NULL || !DUK_HOBJECT_IS_CALLABLE(h_set)) { - goto type_error; - } - setter = h_set; - } - is_acc_desc = 1; - defprop_flags |= DUK_DEFPROP_HAVE_SETTER; - } - - if (duk_get_prop_stridx(thr, idx_in, DUK_STRIDX_ENUMERABLE)) { - if (duk_to_boolean_top_pop(thr)) { - defprop_flags |= DUK_DEFPROP_HAVE_ENUMERABLE | DUK_DEFPROP_ENUMERABLE; - } else { - defprop_flags |= DUK_DEFPROP_HAVE_ENUMERABLE; - } - } - - if (duk_get_prop_stridx(thr, idx_in, DUK_STRIDX_CONFIGURABLE)) { - if (duk_to_boolean_top_pop(thr)) { - defprop_flags |= DUK_DEFPROP_HAVE_CONFIGURABLE | DUK_DEFPROP_CONFIGURABLE; - } else { - defprop_flags |= DUK_DEFPROP_HAVE_CONFIGURABLE; - } - } - - if (is_data_desc && is_acc_desc) { - goto type_error; - } - - *out_defprop_flags = defprop_flags; - *out_idx_value = idx_value; - *out_getter = getter; - *out_setter = setter; - - /* [ ... [multiple values] ] */ - return; - -type_error: - DUK_ERROR_TYPE(thr, DUK_STR_INVALID_DESCRIPTOR); - DUK_WO_NORETURN(return;); -} - -/* - * Object.defineProperty() related helper (E5 Section 15.2.3.6). - * Also handles ES2015 Reflect.defineProperty(). - * - * Inlines all [[DefineOwnProperty]] exotic behaviors. - * - * Note: ECMAScript compliant [[DefineOwnProperty]](P, Desc, Throw) is not - * implemented directly, but Object.defineProperty() serves its purpose. - * We don't need the [[DefineOwnProperty]] internally and we don't have a - * property descriptor with 'missing values' so it's easier to avoid it - * entirely. - * - * Note: this is only called for actual objects, not primitive values. - * This must support virtual properties for full objects (e.g. Strings) - * but not for plain values (e.g. strings). Lightfuncs, even though - * primitive in a sense, are treated like objects and accepted as target - * values. - */ - -/* XXX: this is a major target for size optimization */ -DUK_INTERNAL -duk_bool_t duk_hobject_define_property_helper(duk_hthread *thr, - duk_uint_t defprop_flags, - duk_hobject *obj, - duk_hstring *key, - duk_idx_t idx_value, - duk_hobject *get, - duk_hobject *set, - duk_bool_t throw_flag) { - duk_uint32_t arr_idx; - duk_tval tv; - duk_bool_t has_enumerable; - duk_bool_t has_configurable; - duk_bool_t has_writable; - duk_bool_t has_value; - duk_bool_t has_get; - duk_bool_t has_set; - duk_bool_t is_enumerable; - duk_bool_t is_configurable; - duk_bool_t is_writable; - duk_bool_t force_flag; - duk_small_uint_t new_flags; - duk_propdesc curr; - duk_uint32_t arridx_new_array_length; /* != 0 => post-update for array 'length' (used when key is an array index) */ - duk_uint32_t arrlen_old_len; - duk_uint32_t arrlen_new_len; - duk_bool_t pending_write_protect; - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(thr->heap != NULL); - DUK_ASSERT(obj != NULL); - DUK_ASSERT(key != NULL); - /* idx_value may be < 0 (no value), set and get may be NULL */ - - DUK_ASSERT_VALSTACK_SPACE(thr, DUK__VALSTACK_SPACE); - - /* All the flags fit in 16 bits, so will fit into duk_bool_t. */ - - has_writable = (defprop_flags & DUK_DEFPROP_HAVE_WRITABLE); - has_enumerable = (defprop_flags & DUK_DEFPROP_HAVE_ENUMERABLE); - has_configurable = (defprop_flags & DUK_DEFPROP_HAVE_CONFIGURABLE); - has_value = (defprop_flags & DUK_DEFPROP_HAVE_VALUE); - has_get = (defprop_flags & DUK_DEFPROP_HAVE_GETTER); - has_set = (defprop_flags & DUK_DEFPROP_HAVE_SETTER); - is_writable = (defprop_flags & DUK_DEFPROP_WRITABLE); - is_enumerable = (defprop_flags & DUK_DEFPROP_ENUMERABLE); - is_configurable = (defprop_flags & DUK_DEFPROP_CONFIGURABLE); - force_flag = (defprop_flags & DUK_DEFPROP_FORCE); - - arr_idx = DUK_HSTRING_GET_ARRIDX_SLOW(key); - - arridx_new_array_length = 0; - pending_write_protect = 0; - arrlen_old_len = 0; - arrlen_new_len = 0; - - DUK_DDD(DUK_DDDPRINT("has_enumerable=%ld is_enumerable=%ld " - "has_configurable=%ld is_configurable=%ld " - "has_writable=%ld is_writable=%ld " - "has_value=%ld value=%!T " - "has_get=%ld get=%p=%!O " - "has_set=%ld set=%p=%!O " - "arr_idx=%ld throw_flag=!%ld", - (long) has_enumerable, - (long) is_enumerable, - (long) has_configurable, - (long) is_configurable, - (long) has_writable, - (long) is_writable, - (long) has_value, - (duk_tval *) (idx_value >= 0 ? duk_get_tval(thr, idx_value) : NULL), - (long) has_get, - (void *) get, - (duk_heaphdr *) get, - (long) has_set, - (void *) set, - (duk_heaphdr *) set, - (long) arr_idx, - (long) throw_flag)); - - /* - * Array exotic behaviors can be implemented at this point. The local variables - * are essentially a 'value copy' of the input descriptor (Desc), which is modified - * by the Array [[DefineOwnProperty]] (E5 Section 15.4.5.1). - */ - - if (!DUK_HOBJECT_HAS_EXOTIC_ARRAY(obj)) { - goto skip_array_exotic; - } - - if (key == DUK_HTHREAD_STRING_LENGTH(thr)) { - duk_harray *a; - - /* E5 Section 15.4.5.1, step 3, steps a - i are implemented here, j - n at the end */ - if (!has_value) { - DUK_DDD(DUK_DDDPRINT("exotic array behavior for 'length', but no value in descriptor -> normal behavior")); - goto skip_array_exotic; - } - - DUK_DDD(DUK_DDDPRINT("exotic array behavior for 'length', value present in descriptor -> exotic behavior")); - - /* - * Get old and new length - */ - - a = (duk_harray *) obj; - DUK_HARRAY_ASSERT_VALID(a); - arrlen_old_len = a->length; - - DUK_ASSERT(idx_value >= 0); - arrlen_new_len = duk__to_new_array_length_checked(thr, DUK_GET_TVAL_POSIDX(thr, idx_value)); - duk_push_u32(thr, arrlen_new_len); - duk_replace(thr, idx_value); /* step 3.e: replace 'Desc.[[Value]]' */ - - DUK_DDD(DUK_DDDPRINT("old_len=%ld, new_len=%ld", (long) arrlen_old_len, (long) arrlen_new_len)); - - if (arrlen_new_len >= arrlen_old_len) { - /* standard behavior, step 3.f.i */ - DUK_DDD(DUK_DDDPRINT("new length is same or higher as previous => standard behavior")); - goto skip_array_exotic; - } - DUK_DDD(DUK_DDDPRINT("new length is smaller than previous => exotic post behavior")); - - /* XXX: consolidated algorithm step 15.f -> redundant? */ - if (DUK_HARRAY_LENGTH_NONWRITABLE(a) && !force_flag) { - /* Array .length is always non-configurable; if it's also - * non-writable, don't allow it to be written. - */ - goto fail_not_configurable; - } - - /* steps 3.h and 3.i */ - if (has_writable && !is_writable) { - DUK_DDD(DUK_DDDPRINT("desc writable is false, force it back to true, and flag pending write protect")); - is_writable = 1; - pending_write_protect = 1; - } - - /* remaining actual steps are carried out if standard DefineOwnProperty succeeds */ - } else if (arr_idx != DUK__NO_ARRAY_INDEX) { - /* XXX: any chance of unifying this with the 'length' key handling? */ - - /* E5 Section 15.4.5.1, step 4 */ - duk_uint32_t old_len; - duk_harray *a; - - a = (duk_harray *) obj; - DUK_HARRAY_ASSERT_VALID(a); - - old_len = a->length; - - if (arr_idx >= old_len) { - DUK_DDD(DUK_DDDPRINT("defineProperty requires array length update " - "(arr_idx=%ld, old_len=%ld)", - (long) arr_idx, - (long) old_len)); - - if (DUK_HARRAY_LENGTH_NONWRITABLE(a) && !force_flag) { - /* Array .length is always non-configurable, so - * if it's also non-writable, don't allow a value - * write. With force flag allow writing. - */ - goto fail_not_configurable; - } - - /* actual update happens once write has been completed without - * error below. - */ - DUK_ASSERT(arr_idx != 0xffffffffUL); - arridx_new_array_length = arr_idx + 1; - } else { - DUK_DDD(DUK_DDDPRINT("defineProperty does not require length update " - "(arr_idx=%ld, old_len=%ld) -> standard behavior", - (long) arr_idx, - (long) old_len)); - } - } -skip_array_exotic: - - /* XXX: There is currently no support for writing buffer object - * indexed elements here. Attempt to do so will succeed and - * write a concrete property into the buffer object. This should - * be fixed at some point but because buffers are a custom feature - * anyway, this is relatively unimportant. - */ - - /* - * Actual Object.defineProperty() default algorithm. - */ - - /* - * First check whether property exists; if not, simple case. This covers - * steps 1-4. - */ - - if (!duk__get_own_propdesc_raw(thr, obj, key, arr_idx, &curr, DUK_GETDESC_FLAG_PUSH_VALUE)) { - DUK_DDD(DUK_DDDPRINT("property does not exist")); - - if (!DUK_HOBJECT_HAS_EXTENSIBLE(obj) && !force_flag) { - goto fail_not_extensible; - } - -#if defined(DUK_USE_ROM_OBJECTS) - /* ROM objects are never extensible but force flag may - * allow us to come here anyway. - */ - DUK_ASSERT(!DUK_HEAPHDR_HAS_READONLY((duk_heaphdr *) obj) || !DUK_HOBJECT_HAS_EXTENSIBLE(obj)); - if (DUK_HEAPHDR_HAS_READONLY((duk_heaphdr *) obj)) { - DUK_D(DUK_DPRINT("attempt to define property on a read-only target object")); - goto fail_not_configurable; - } -#endif - - /* XXX: share final setting code for value and flags? difficult because - * refcount code is different. Share entry allocation? But can't allocate - * until array index checked. - */ - - /* steps 4.a and 4.b are tricky */ - if (has_set || has_get) { - duk_int_t e_idx; - - DUK_DDD(DUK_DDDPRINT("create new accessor property")); - - DUK_ASSERT(has_set || set == NULL); - DUK_ASSERT(has_get || get == NULL); - DUK_ASSERT(!has_value); - DUK_ASSERT(!has_writable); - - new_flags = DUK_PROPDESC_FLAG_ACCESSOR; /* defaults, E5 Section 8.6.1, Table 7 */ - if (has_enumerable && is_enumerable) { - new_flags |= DUK_PROPDESC_FLAG_ENUMERABLE; - } - if (has_configurable && is_configurable) { - new_flags |= DUK_PROPDESC_FLAG_CONFIGURABLE; - } - - if (arr_idx != DUK__NO_ARRAY_INDEX && DUK_HOBJECT_HAS_ARRAY_PART(obj)) { - DUK_DDD(DUK_DDDPRINT("accessor cannot go to array part, abandon array")); - duk__abandon_array_part(thr, obj); - } - - /* write to entry part */ - e_idx = duk__hobject_alloc_entry_checked(thr, obj, key); - DUK_ASSERT(e_idx >= 0); - - DUK_HOBJECT_E_SET_VALUE_GETTER(thr->heap, obj, e_idx, get); - DUK_HOBJECT_E_SET_VALUE_SETTER(thr->heap, obj, e_idx, set); - DUK_HOBJECT_INCREF_ALLOWNULL(thr, get); - DUK_HOBJECT_INCREF_ALLOWNULL(thr, set); - - DUK_HOBJECT_E_SET_FLAGS(thr->heap, obj, e_idx, new_flags); - goto success_exotics; - } else { - duk_int_t e_idx; - duk_tval *tv2; - - DUK_DDD(DUK_DDDPRINT("create new data property")); - - DUK_ASSERT(!has_set); - DUK_ASSERT(!has_get); - - new_flags = 0; /* defaults, E5 Section 8.6.1, Table 7 */ - if (has_writable && is_writable) { - new_flags |= DUK_PROPDESC_FLAG_WRITABLE; - } - if (has_enumerable && is_enumerable) { - new_flags |= DUK_PROPDESC_FLAG_ENUMERABLE; - } - if (has_configurable && is_configurable) { - new_flags |= DUK_PROPDESC_FLAG_CONFIGURABLE; - } - if (has_value) { - duk_tval *tv_tmp = duk_require_tval(thr, idx_value); - DUK_TVAL_SET_TVAL(&tv, tv_tmp); - } else { - DUK_TVAL_SET_UNDEFINED(&tv); /* default value */ - } - - if (arr_idx != DUK__NO_ARRAY_INDEX && DUK_HOBJECT_HAS_ARRAY_PART(obj)) { - if (new_flags == DUK_PROPDESC_FLAGS_WEC) { - DUK_DDD(DUK_DDDPRINT( - "new data property attributes match array defaults, attempt to write to array part")); - tv2 = duk__obtain_arridx_slot(thr, arr_idx, obj); - if (tv2 == NULL) { - DUK_DDD(DUK_DDDPRINT("failed writing to array part, abandoned array")); - } else { - DUK_DDD(DUK_DDDPRINT("success in writing to array part")); - DUK_ASSERT(DUK_HOBJECT_HAS_ARRAY_PART(obj)); - DUK_ASSERT(DUK_TVAL_IS_UNUSED(tv2)); - DUK_TVAL_SET_TVAL(tv2, &tv); - DUK_TVAL_INCREF(thr, tv2); - goto success_exotics; - } - } else { - DUK_DDD(DUK_DDDPRINT("new data property cannot go to array part, abandon array")); - duk__abandon_array_part(thr, obj); - } - /* fall through */ - } - - /* write to entry part */ - e_idx = duk__hobject_alloc_entry_checked(thr, obj, key); - DUK_ASSERT(e_idx >= 0); - tv2 = DUK_HOBJECT_E_GET_VALUE_TVAL_PTR(thr->heap, obj, e_idx); - DUK_TVAL_SET_TVAL(tv2, &tv); - DUK_TVAL_INCREF(thr, tv2); - - DUK_HOBJECT_E_SET_FLAGS(thr->heap, obj, e_idx, new_flags); - goto success_exotics; - } - DUK_UNREACHABLE(); - } - - /* we currently assume virtual properties are not configurable (as none of them are) */ - DUK_ASSERT((curr.e_idx >= 0 || curr.a_idx >= 0) || !(curr.flags & DUK_PROPDESC_FLAG_CONFIGURABLE)); - - /* [obj key desc value get set curr_value] */ - - /* - * Property already exists. Steps 5-6 detect whether any changes need - * to be made. - */ - - if (has_enumerable) { - if (is_enumerable) { - if (!(curr.flags & DUK_PROPDESC_FLAG_ENUMERABLE)) { - goto need_check; - } - } else { - if (curr.flags & DUK_PROPDESC_FLAG_ENUMERABLE) { - goto need_check; - } - } - } - if (has_configurable) { - if (is_configurable) { - if (!(curr.flags & DUK_PROPDESC_FLAG_CONFIGURABLE)) { - goto need_check; - } - } else { - if (curr.flags & DUK_PROPDESC_FLAG_CONFIGURABLE) { - goto need_check; - } - } - } - if (has_value) { - duk_tval *tmp1; - duk_tval *tmp2; - - /* attempt to change from accessor to data property */ - if (curr.flags & DUK_PROPDESC_FLAG_ACCESSOR) { - goto need_check; - } - - tmp1 = duk_require_tval(thr, -1); /* curr value */ - tmp2 = duk_require_tval(thr, idx_value); /* new value */ - if (!duk_js_samevalue(tmp1, tmp2)) { - goto need_check; - } - } - if (has_writable) { - /* attempt to change from accessor to data property */ - if (curr.flags & DUK_PROPDESC_FLAG_ACCESSOR) { - goto need_check; - } - - if (is_writable) { - if (!(curr.flags & DUK_PROPDESC_FLAG_WRITABLE)) { - goto need_check; - } - } else { - if (curr.flags & DUK_PROPDESC_FLAG_WRITABLE) { - goto need_check; - } - } - } - if (has_set) { - if (curr.flags & DUK_PROPDESC_FLAG_ACCESSOR) { - if (set != curr.set) { - goto need_check; - } - } else { - goto need_check; - } - } - if (has_get) { - if (curr.flags & DUK_PROPDESC_FLAG_ACCESSOR) { - if (get != curr.get) { - goto need_check; - } - } else { - goto need_check; - } - } - - /* property exists, either 'desc' is empty, or all values - * match (SameValue) - */ - goto success_no_exotics; - -need_check: - - /* - * Some change(s) need to be made. Steps 7-11. - */ - - /* shared checks for all descriptor types */ - if (!(curr.flags & DUK_PROPDESC_FLAG_CONFIGURABLE) && !force_flag) { - if (has_configurable && is_configurable) { - goto fail_not_configurable; - } - if (has_enumerable) { - if (curr.flags & DUK_PROPDESC_FLAG_ENUMERABLE) { - if (!is_enumerable) { - goto fail_not_configurable; - } - } else { - if (is_enumerable) { - goto fail_not_configurable; - } - } - } - } - - /* Virtual properties don't have backing so they can't mostly be - * edited. Some virtual properties are, however, writable: for - * example, virtual index properties of buffer objects and Array - * instance .length. These are not configurable so the checks - * above mostly cover attempts to change them, except when the - * duk_def_prop() call is used with DUK_DEFPROP_FORCE; even in - * that case we can't forcibly change the property attributes - * because they don't have concrete backing. - */ - - /* XXX: for ROM objects too it'd be best if value modify was - * allowed if the value matches SameValue. - */ - /* Reject attempt to change a read-only object. */ -#if defined(DUK_USE_ROM_OBJECTS) - if (DUK_HEAPHDR_HAS_READONLY((duk_heaphdr *) obj)) { - DUK_DD(DUK_DDPRINT("attempt to define property on read-only target object")); - goto fail_not_configurable; - } -#endif - - /* descriptor type specific checks */ - if (has_set || has_get) { - /* IsAccessorDescriptor(desc) == true */ - DUK_ASSERT(!has_writable); - DUK_ASSERT(!has_value); - - if (curr.flags & DUK_PROPDESC_FLAG_ACCESSOR) { - /* curr and desc are accessors */ - if (!(curr.flags & DUK_PROPDESC_FLAG_CONFIGURABLE) && !force_flag) { - if (has_set && set != curr.set) { - goto fail_not_configurable; - } - if (has_get && get != curr.get) { - goto fail_not_configurable; - } - } - } else { - duk_bool_t rc; - duk_tval *tv1; - - /* curr is data, desc is accessor */ - if (!(curr.flags & DUK_PROPDESC_FLAG_CONFIGURABLE) && !force_flag) { - goto fail_not_configurable; - } - - DUK_DDD(DUK_DDDPRINT("convert property to accessor property")); - if (curr.a_idx >= 0) { - DUK_DDD( - DUK_DDDPRINT("property to convert is stored in an array entry, abandon array and re-lookup")); - duk__abandon_array_part(thr, obj); - duk_pop_unsafe(thr); /* remove old value */ - rc = duk__get_own_propdesc_raw(thr, obj, key, arr_idx, &curr, DUK_GETDESC_FLAG_PUSH_VALUE); - DUK_UNREF(rc); - DUK_ASSERT(rc != 0); - DUK_ASSERT(curr.e_idx >= 0 && curr.a_idx < 0); - } - if (curr.e_idx < 0) { - DUK_ASSERT(curr.a_idx < 0 && curr.e_idx < 0); - goto fail_virtual; /* safeguard for virtual property */ - } - - DUK_ASSERT(curr.e_idx >= 0); - DUK_ASSERT(!DUK_HOBJECT_E_SLOT_IS_ACCESSOR(thr->heap, obj, curr.e_idx)); - - tv1 = DUK_HOBJECT_E_GET_VALUE_TVAL_PTR(thr->heap, obj, curr.e_idx); - DUK_TVAL_SET_UNDEFINED_UPDREF_NORZ(thr, tv1); /* XXX: just decref */ - - DUK_HOBJECT_E_SET_VALUE_GETTER(thr->heap, obj, curr.e_idx, NULL); - DUK_HOBJECT_E_SET_VALUE_SETTER(thr->heap, obj, curr.e_idx, NULL); - DUK_HOBJECT_E_SLOT_CLEAR_WRITABLE(thr->heap, obj, curr.e_idx); - DUK_HOBJECT_E_SLOT_SET_ACCESSOR(thr->heap, obj, curr.e_idx); - - DUK_DDD(DUK_DDDPRINT("flags after data->accessor conversion: 0x%02lx", - (unsigned long) DUK_HOBJECT_E_GET_FLAGS(thr->heap, obj, curr.e_idx))); - /* Update curr.flags; faster than a re-lookup. */ - curr.flags &= ~DUK_PROPDESC_FLAG_WRITABLE; - curr.flags |= DUK_PROPDESC_FLAG_ACCESSOR; - } - } else if (has_value || has_writable) { - /* IsDataDescriptor(desc) == true */ - DUK_ASSERT(!has_set); - DUK_ASSERT(!has_get); - - if (curr.flags & DUK_PROPDESC_FLAG_ACCESSOR) { - duk_hobject *tmp; - - /* curr is accessor, desc is data */ - if (!(curr.flags & DUK_PROPDESC_FLAG_CONFIGURABLE) && !force_flag) { - goto fail_not_configurable; - } - - /* curr is accessor -> cannot be in array part. */ - DUK_ASSERT(curr.a_idx < 0); - if (curr.e_idx < 0) { - goto fail_virtual; /* safeguard; no virtual accessors now */ - } - - DUK_DDD(DUK_DDDPRINT("convert property to data property")); - - DUK_ASSERT(DUK_HOBJECT_E_SLOT_IS_ACCESSOR(thr->heap, obj, curr.e_idx)); - tmp = DUK_HOBJECT_E_GET_VALUE_GETTER(thr->heap, obj, curr.e_idx); - DUK_UNREF(tmp); - DUK_HOBJECT_E_SET_VALUE_GETTER(thr->heap, obj, curr.e_idx, NULL); - DUK_HOBJECT_DECREF_NORZ_ALLOWNULL(thr, tmp); - tmp = DUK_HOBJECT_E_GET_VALUE_SETTER(thr->heap, obj, curr.e_idx); - DUK_UNREF(tmp); - DUK_HOBJECT_E_SET_VALUE_SETTER(thr->heap, obj, curr.e_idx, NULL); - DUK_HOBJECT_DECREF_NORZ_ALLOWNULL(thr, tmp); - - DUK_TVAL_SET_UNDEFINED(DUK_HOBJECT_E_GET_VALUE_TVAL_PTR(thr->heap, obj, curr.e_idx)); - DUK_HOBJECT_E_SLOT_CLEAR_WRITABLE(thr->heap, obj, curr.e_idx); - DUK_HOBJECT_E_SLOT_CLEAR_ACCESSOR(thr->heap, obj, curr.e_idx); - - DUK_DDD(DUK_DDDPRINT("flags after accessor->data conversion: 0x%02lx", - (unsigned long) DUK_HOBJECT_E_GET_FLAGS(thr->heap, obj, curr.e_idx))); - - /* Update curr.flags; faster than a re-lookup. */ - curr.flags &= ~(DUK_PROPDESC_FLAG_WRITABLE | DUK_PROPDESC_FLAG_ACCESSOR); - } else { - /* curr and desc are data */ - if (!(curr.flags & DUK_PROPDESC_FLAG_CONFIGURABLE) && !force_flag) { - if (!(curr.flags & DUK_PROPDESC_FLAG_WRITABLE) && has_writable && is_writable) { - goto fail_not_configurable; - } - /* Note: changing from writable to non-writable is OK */ - if (!(curr.flags & DUK_PROPDESC_FLAG_WRITABLE) && has_value) { - duk_tval *tmp1 = duk_require_tval(thr, -1); /* curr value */ - duk_tval *tmp2 = duk_require_tval(thr, idx_value); /* new value */ - if (!duk_js_samevalue(tmp1, tmp2)) { - goto fail_not_configurable; - } - } - } - } - } else { - /* IsGenericDescriptor(desc) == true; this means in practice that 'desc' - * only has [[Enumerable]] or [[Configurable]] flag updates, which are - * allowed at this point. - */ - - DUK_ASSERT(!has_value && !has_writable && !has_get && !has_set); - } - - /* - * Start doing property attributes updates. Steps 12-13. - * - * Start by computing new attribute flags without writing yet. - * Property type conversion is done above if necessary. - */ - - new_flags = curr.flags; - - if (has_enumerable) { - if (is_enumerable) { - new_flags |= DUK_PROPDESC_FLAG_ENUMERABLE; - } else { - new_flags &= ~DUK_PROPDESC_FLAG_ENUMERABLE; - } - } - if (has_configurable) { - if (is_configurable) { - new_flags |= DUK_PROPDESC_FLAG_CONFIGURABLE; - } else { - new_flags &= ~DUK_PROPDESC_FLAG_CONFIGURABLE; - } - } - if (has_writable) { - if (is_writable) { - new_flags |= DUK_PROPDESC_FLAG_WRITABLE; - } else { - new_flags &= ~DUK_PROPDESC_FLAG_WRITABLE; - } - } - - /* XXX: write protect after flag? -> any chance of handling it here? */ - - DUK_DDD(DUK_DDDPRINT("new flags that we want to write: 0x%02lx", (unsigned long) new_flags)); - - /* - * Check whether we need to abandon an array part (if it exists) - */ - - if (curr.a_idx >= 0) { - duk_bool_t rc; - - DUK_ASSERT(curr.e_idx < 0); - - if (new_flags == DUK_PROPDESC_FLAGS_WEC) { - duk_tval *tv1, *tv2; - - DUK_DDD(DUK_DDDPRINT("array index, new property attributes match array defaults, update in-place")); - - DUK_ASSERT(curr.flags == DUK_PROPDESC_FLAGS_WEC); /* must have been, since in array part */ - DUK_ASSERT(!has_set); - DUK_ASSERT(!has_get); - DUK_ASSERT( - idx_value >= - 0); /* must be: if attributes match and we get here the value must differ (otherwise no change) */ - - tv2 = duk_require_tval(thr, idx_value); - tv1 = DUK_HOBJECT_A_GET_VALUE_PTR(thr->heap, obj, curr.a_idx); - DUK_TVAL_SET_TVAL_UPDREF(thr, tv1, tv2); /* side effects; may invalidate a_idx */ - goto success_exotics; - } - - DUK_DDD( - DUK_DDDPRINT("array index, new property attributes do not match array defaults, abandon array and re-lookup")); - duk__abandon_array_part(thr, obj); - duk_pop_unsafe(thr); /* remove old value */ - rc = duk__get_own_propdesc_raw(thr, obj, key, arr_idx, &curr, DUK_GETDESC_FLAG_PUSH_VALUE); - DUK_UNREF(rc); - DUK_ASSERT(rc != 0); - DUK_ASSERT(curr.e_idx >= 0 && curr.a_idx < 0); - } - - DUK_DDD(DUK_DDDPRINT("updating existing property in entry part")); - - /* Array case is handled comprehensively above: either in entry - * part or a virtual property. - */ - DUK_ASSERT(curr.a_idx < 0); - - DUK_DDD(DUK_DDDPRINT("update existing property attributes")); - if (curr.e_idx >= 0) { - DUK_HOBJECT_E_SET_FLAGS(thr->heap, obj, curr.e_idx, new_flags); - } else { - /* For Array .length the only allowed transition is for .length - * to become non-writable. - */ - if (key == DUK_HTHREAD_STRING_LENGTH(thr) && DUK_HOBJECT_HAS_EXOTIC_ARRAY(obj)) { - duk_harray *a; - a = (duk_harray *) obj; - DUK_DD(DUK_DDPRINT("Object.defineProperty() attribute update for duk_harray .length -> %02lx", - (unsigned long) new_flags)); - DUK_HARRAY_ASSERT_VALID(a); - if ((new_flags & DUK_PROPDESC_FLAGS_EC) != (curr.flags & DUK_PROPDESC_FLAGS_EC)) { - DUK_D(DUK_DPRINT("Object.defineProperty() attempt to change virtual array .length enumerable or " - "configurable attribute, fail")); - goto fail_virtual; - } - if (new_flags & DUK_PROPDESC_FLAG_WRITABLE) { - DUK_HARRAY_SET_LENGTH_WRITABLE(a); - } else { - DUK_HARRAY_SET_LENGTH_NONWRITABLE(a); - } - } - } - - if (has_set) { - duk_hobject *tmp; - - /* Virtual properties are non-configurable but with a 'force' - * flag we might come here so check explicitly for virtual. - */ - if (curr.e_idx < 0) { - goto fail_virtual; - } - - DUK_DDD(DUK_DDDPRINT("update existing property setter")); - DUK_ASSERT(DUK_HOBJECT_E_SLOT_IS_ACCESSOR(thr->heap, obj, curr.e_idx)); - - tmp = DUK_HOBJECT_E_GET_VALUE_SETTER(thr->heap, obj, curr.e_idx); - DUK_UNREF(tmp); - DUK_HOBJECT_E_SET_VALUE_SETTER(thr->heap, obj, curr.e_idx, set); - DUK_HOBJECT_INCREF_ALLOWNULL(thr, set); - DUK_HOBJECT_DECREF_ALLOWNULL(thr, tmp); /* side effects; may invalidate e_idx */ - } - if (has_get) { - duk_hobject *tmp; - - if (curr.e_idx < 0) { - goto fail_virtual; - } - - DUK_DDD(DUK_DDDPRINT("update existing property getter")); - DUK_ASSERT(DUK_HOBJECT_E_SLOT_IS_ACCESSOR(thr->heap, obj, curr.e_idx)); - - tmp = DUK_HOBJECT_E_GET_VALUE_GETTER(thr->heap, obj, curr.e_idx); - DUK_UNREF(tmp); - DUK_HOBJECT_E_SET_VALUE_GETTER(thr->heap, obj, curr.e_idx, get); - DUK_HOBJECT_INCREF_ALLOWNULL(thr, get); - DUK_HOBJECT_DECREF_ALLOWNULL(thr, tmp); /* side effects; may invalidate e_idx */ - } - if (has_value) { - duk_tval *tv1, *tv2; - - DUK_DDD(DUK_DDDPRINT("update existing property value")); - - if (curr.e_idx >= 0) { - DUK_ASSERT(!DUK_HOBJECT_E_SLOT_IS_ACCESSOR(thr->heap, obj, curr.e_idx)); - tv2 = duk_require_tval(thr, idx_value); - tv1 = DUK_HOBJECT_E_GET_VALUE_TVAL_PTR(thr->heap, obj, curr.e_idx); - DUK_TVAL_SET_TVAL_UPDREF(thr, tv1, tv2); /* side effects; may invalidate e_idx */ - } else { - DUK_ASSERT(curr.a_idx < 0); /* array part case handled comprehensively previously */ - - DUK_DD(DUK_DDPRINT("Object.defineProperty(), value update for virtual property")); - /* XXX: Uint8Array and other typed array virtual writes not currently - * handled. - */ - if (key == DUK_HTHREAD_STRING_LENGTH(thr) && DUK_HOBJECT_HAS_EXOTIC_ARRAY(obj)) { - duk_harray *a; - a = (duk_harray *) obj; - DUK_DD(DUK_DDPRINT("Object.defineProperty() value update for duk_harray .length -> %ld", - (long) arrlen_new_len)); - DUK_HARRAY_ASSERT_VALID(a); - a->length = arrlen_new_len; - } else { - goto fail_virtual; /* should not happen */ - } - } - } - - /* - * Standard algorithm succeeded without errors, check for exotic post-behaviors. - * - * Arguments exotic behavior in E5 Section 10.6 occurs after the standard - * [[DefineOwnProperty]] has completed successfully. - * - * Array exotic behavior in E5 Section 15.4.5.1 is implemented partly - * prior to the default [[DefineOwnProperty]], but: - * - for an array index key (e.g. "10") the final 'length' update occurs here - * - for 'length' key the element deletion and 'length' update occurs here - */ - -success_exotics: - - /* curr.a_idx or curr.e_idx may have been invalidated by side effects - * above. - */ - - /* [obj key desc value get set curr_value] */ - - if (DUK_HOBJECT_HAS_EXOTIC_ARRAY(obj)) { - duk_harray *a; - - a = (duk_harray *) obj; - DUK_HARRAY_ASSERT_VALID(a); - - if (arridx_new_array_length > 0) { - /* - * Note: zero works as a "no update" marker because the new length - * can never be zero after a new property is written. - */ - - /* E5 Section 15.4.5.1, steps 4.e.i - 4.e.ii */ - - DUK_DDD(DUK_DDDPRINT("defineProperty successful, pending array length update to: %ld", - (long) arridx_new_array_length)); - - a->length = arridx_new_array_length; - } - - if (key == DUK_HTHREAD_STRING_LENGTH(thr) && arrlen_new_len < arrlen_old_len) { - /* - * E5 Section 15.4.5.1, steps 3.k - 3.n. The order at the end combines - * the error case 3.l.iii and the success case 3.m-3.n. - */ - - /* XXX: investigate whether write protect can be handled above, if we - * just update length here while ignoring its protected status - */ - - duk_uint32_t result_len; - duk_bool_t rc; - - DUK_DDD(DUK_DDDPRINT("defineProperty successful, key is 'length', exotic array behavior, " - "doing array element deletion and length update")); - - rc = - duk__handle_put_array_length_smaller(thr, obj, arrlen_old_len, arrlen_new_len, force_flag, &result_len); - - /* update length (curr points to length, and we assume it's still valid) */ - DUK_ASSERT(result_len >= arrlen_new_len && result_len <= arrlen_old_len); - - a->length = result_len; - - if (pending_write_protect) { - DUK_DDD(DUK_DDDPRINT("setting array length non-writable (pending writability update)")); - DUK_HARRAY_SET_LENGTH_NONWRITABLE(a); - } - - /* XXX: shrink array allocation or entries compaction here? */ - if (!rc) { - DUK_DD(DUK_DDPRINT("array length write only partially successful")); - goto fail_not_configurable; - } - } - } else if (arr_idx != DUK__NO_ARRAY_INDEX && DUK_HOBJECT_HAS_EXOTIC_ARGUMENTS(obj)) { - duk_hobject *map; - duk_hobject *varenv; - - DUK_ASSERT(arridx_new_array_length == 0); - DUK_ASSERT(!DUK_HOBJECT_HAS_EXOTIC_ARRAY(obj)); /* traits are separate; in particular, arguments not an array */ - - map = NULL; - varenv = NULL; - if (!duk__lookup_arguments_map(thr, obj, key, &curr, &map, &varenv)) { - goto success_no_exotics; - } - DUK_ASSERT(map != NULL); - DUK_ASSERT(varenv != NULL); - - /* [obj key desc value get set curr_value varname] */ - - if (has_set || has_get) { - /* = IsAccessorDescriptor(Desc) */ - DUK_DDD(DUK_DDDPRINT("defineProperty successful, key mapped to arguments 'map' " - "changed to an accessor, delete arguments binding")); - - (void) duk_hobject_delprop_raw(thr, map, key, 0); /* ignore result */ - } else { - /* Note: this order matters (final value before deleting map entry must be done) */ - DUK_DDD(DUK_DDDPRINT("defineProperty successful, key mapped to arguments 'map', " - "check for value update / binding deletion")); - - if (has_value) { - duk_hstring *varname; - - DUK_DDD(DUK_DDDPRINT("defineProperty successful, key mapped to arguments 'map', " - "update bound value (variable/argument)")); - - varname = duk_require_hstring(thr, -1); - DUK_ASSERT(varname != NULL); - - DUK_DDD(DUK_DDDPRINT("arguments object automatic putvar for a bound variable; " - "key=%!O, varname=%!O, value=%!T", - (duk_heaphdr *) key, - (duk_heaphdr *) varname, - (duk_tval *) duk_require_tval(thr, idx_value))); - - /* strict flag for putvar comes from our caller (currently: fixed) */ - duk_js_putvar_envrec(thr, varenv, varname, duk_require_tval(thr, idx_value), 1 /*throw_flag*/); - } - if (has_writable && !is_writable) { - DUK_DDD(DUK_DDDPRINT("defineProperty successful, key mapped to arguments 'map', " - "changed to non-writable, delete arguments binding")); - - (void) duk_hobject_delprop_raw(thr, map, key, 0); /* ignore result */ - } - } - - /* 'varname' is in stack in this else branch, leaving an unbalanced stack below, - * but this doesn't matter now. - */ - } - -success_no_exotics: - /* Some code paths use NORZ macros for simplicity, ensure refzero - * handling is completed. - */ - DUK_REFZERO_CHECK_SLOW(thr); - return 1; - -fail_not_extensible: - if (throw_flag) { - DUK_ERROR_TYPE(thr, DUK_STR_NOT_EXTENSIBLE); - DUK_WO_NORETURN(return 0;); - } - return 0; - -fail_virtual: /* just use the same "not configurable" error message" */ -fail_not_configurable: - if (throw_flag) { - DUK_ERROR_TYPE(thr, DUK_STR_NOT_CONFIGURABLE); - DUK_WO_NORETURN(return 0;); - } - return 0; -} - -/* - * Object.prototype.hasOwnProperty() and Object.prototype.propertyIsEnumerable(). - */ - -DUK_INTERNAL duk_bool_t duk_hobject_object_ownprop_helper(duk_hthread *thr, duk_small_uint_t required_desc_flags) { - duk_hstring *h_v; - duk_hobject *h_obj; - duk_propdesc desc; - duk_bool_t ret; - - /* coercion order matters */ - h_v = duk_to_hstring_acceptsymbol(thr, 0); - DUK_ASSERT(h_v != NULL); - - h_obj = duk_push_this_coercible_to_object(thr); - DUK_ASSERT(h_obj != NULL); - - ret = duk_hobject_get_own_propdesc(thr, h_obj, h_v, &desc, 0 /*flags*/); /* don't push value */ - - duk_push_boolean(thr, ret && ((desc.flags & required_desc_flags) == required_desc_flags)); - return 1; -} - -/* - * Object.seal() and Object.freeze() (E5 Sections 15.2.3.8 and 15.2.3.9) - * - * Since the algorithms are similar, a helper provides both functions. - * Freezing is essentially sealing + making plain properties non-writable. - * - * Note: virtual (non-concrete) properties which are non-configurable but - * writable would pose some problems, but such properties do not currently - * exist (all virtual properties are non-configurable and non-writable). - * If they did exist, the non-configurability does NOT prevent them from - * becoming non-writable. However, this change should be recorded somehow - * so that it would turn up (e.g. when getting the property descriptor), - * requiring some additional flags in the object. - */ - -DUK_INTERNAL void duk_hobject_object_seal_freeze_helper(duk_hthread *thr, duk_hobject *obj, duk_bool_t is_freeze) { - duk_uint_fast32_t i; - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(thr->heap != NULL); - DUK_ASSERT(obj != NULL); - - DUK_ASSERT_VALSTACK_SPACE(thr, DUK__VALSTACK_SPACE); - -#if defined(DUK_USE_ROM_OBJECTS) - if (DUK_HEAPHDR_HAS_READONLY((duk_heaphdr *) obj)) { - DUK_DD(DUK_DDPRINT("attempt to seal/freeze a readonly object, reject")); - DUK_ERROR_TYPE(thr, DUK_STR_NOT_CONFIGURABLE); - DUK_WO_NORETURN(return;); - } -#endif - - /* - * Abandon array part because all properties must become non-configurable. - * Note that this is now done regardless of whether this is always the case - * (skips check, but performance problem if caller would do this many times - * for the same object; not likely). - */ - - duk__abandon_array_part(thr, obj); - DUK_ASSERT(DUK_HOBJECT_GET_ASIZE(obj) == 0); - - for (i = 0; i < DUK_HOBJECT_GET_ENEXT(obj); i++) { - duk_uint8_t *fp; - - /* since duk__abandon_array_part() causes a resize, there should be no gaps in keys */ - DUK_ASSERT(DUK_HOBJECT_E_GET_KEY(thr->heap, obj, i) != NULL); - - /* avoid multiple computations of flags address; bypasses macros */ - fp = DUK_HOBJECT_E_GET_FLAGS_PTR(thr->heap, obj, i); - if (is_freeze && !((*fp) & DUK_PROPDESC_FLAG_ACCESSOR)) { - *fp &= ~(DUK_PROPDESC_FLAG_WRITABLE | DUK_PROPDESC_FLAG_CONFIGURABLE); - } else { - *fp &= ~DUK_PROPDESC_FLAG_CONFIGURABLE; - } - } - - DUK_HOBJECT_CLEAR_EXTENSIBLE(obj); - - /* no need to compact since we already did that in duk__abandon_array_part() - * (regardless of whether an array part existed or not. - */ - - return; -} - -/* - * Object.isSealed() and Object.isFrozen() (E5 Sections 15.2.3.11, 15.2.3.13) - * - * Since the algorithms are similar, a helper provides both functions. - * Freezing is essentially sealing + making plain properties non-writable. - * - * Note: all virtual (non-concrete) properties are currently non-configurable - * and non-writable (and there are no accessor virtual properties), so they don't - * need to be considered here now. - */ - -DUK_INTERNAL duk_bool_t duk_hobject_object_is_sealed_frozen_helper(duk_hthread *thr, duk_hobject *obj, duk_bool_t is_frozen) { - duk_uint_fast32_t i; - - DUK_ASSERT(obj != NULL); - DUK_UNREF(thr); - - /* Note: no allocation pressure, no need to check refcounts etc */ - - /* must not be extensible */ - if (DUK_HOBJECT_HAS_EXTENSIBLE(obj)) { - return 0; - } - - /* all virtual properties are non-configurable and non-writable */ - - /* entry part must not contain any configurable properties, or - * writable properties (if is_frozen). - */ - for (i = 0; i < DUK_HOBJECT_GET_ENEXT(obj); i++) { - duk_small_uint_t flags; - - if (!DUK_HOBJECT_E_GET_KEY(thr->heap, obj, i)) { - continue; - } - - /* avoid multiple computations of flags address; bypasses macros */ - flags = (duk_small_uint_t) DUK_HOBJECT_E_GET_FLAGS(thr->heap, obj, i); - - if (flags & DUK_PROPDESC_FLAG_CONFIGURABLE) { - return 0; - } - if (is_frozen && !(flags & DUK_PROPDESC_FLAG_ACCESSOR) && (flags & DUK_PROPDESC_FLAG_WRITABLE)) { - return 0; - } - } - - /* array part must not contain any non-unused properties, as they would - * be configurable and writable. - */ - for (i = 0; i < DUK_HOBJECT_GET_ASIZE(obj); i++) { - duk_tval *tv = DUK_HOBJECT_A_GET_VALUE_PTR(thr->heap, obj, i); - if (!DUK_TVAL_IS_UNUSED(tv)) { - return 0; - } - } - - return 1; -} - -/* - * Object.preventExtensions() and Object.isExtensible() (E5 Sections 15.2.3.10, 15.2.3.13) - * - * Not needed, implemented by macros DUK_HOBJECT_{HAS,CLEAR,SET}_EXTENSIBLE - * and the Object built-in bindings. - */ - -/* automatic undefs */ -#undef DUK__HASH_DELETED -#undef DUK__HASH_UNUSED -#undef DUK__NO_ARRAY_INDEX -#undef DUK__VALSTACK_PROXY_LOOKUP -#undef DUK__VALSTACK_SPACE -#line 1 "duk_hstring_assert.c" -/* - * duk_hstring assertion helpers. - */ - -/* #include duk_internal.h -> already included */ - -#if defined(DUK_USE_ASSERTIONS) - -DUK_INTERNAL void duk_hstring_assert_valid(duk_hstring *h) { - DUK_ASSERT(h != NULL); -} - -#endif /* DUK_USE_ASSERTIONS */ -#line 1 "duk_hstring_misc.c" -/* - * Misc support functions - */ - -/* #include duk_internal.h -> already included */ - -/* - * duk_hstring charCodeAt, with and without surrogate awareness - */ - -DUK_INTERNAL duk_ucodepoint_t duk_hstring_char_code_at_raw(duk_hthread *thr, - duk_hstring *h, - duk_uint_t pos, - duk_bool_t surrogate_aware) { - duk_uint32_t boff; - const duk_uint8_t *p, *p_start, *p_end; - duk_ucodepoint_t cp1; - duk_ucodepoint_t cp2; - - /* Caller must check character offset to be inside the string. */ - DUK_ASSERT(thr != NULL); - DUK_ASSERT(h != NULL); - DUK_ASSERT_DISABLE(pos >= 0); /* unsigned */ - DUK_ASSERT(pos < (duk_uint_t) DUK_HSTRING_GET_CHARLEN(h)); - - boff = (duk_uint32_t) duk_heap_strcache_offset_char2byte(thr, h, (duk_uint32_t) pos); - DUK_DDD(DUK_DDDPRINT("charCodeAt: pos=%ld -> boff=%ld, str=%!O", (long) pos, (long) boff, (duk_heaphdr *) h)); - DUK_ASSERT_DISABLE(boff >= 0); - DUK_ASSERT(boff < DUK_HSTRING_GET_BYTELEN(h)); - - p_start = DUK_HSTRING_GET_DATA(h); - p_end = p_start + DUK_HSTRING_GET_BYTELEN(h); - p = p_start + boff; - DUK_DDD(DUK_DDDPRINT("p_start=%p, p_end=%p, p=%p", (const void *) p_start, (const void *) p_end, (const void *) p)); - - /* For invalid UTF-8 (never happens for standard ECMAScript strings) - * return U+FFFD replacement character. - */ - if (duk_unicode_decode_xutf8(thr, &p, p_start, p_end, &cp1)) { - if (surrogate_aware && cp1 >= 0xd800UL && cp1 <= 0xdbffUL) { - /* The decode helper is memory safe even if 'cp1' was - * decoded at the end of the string and 'p' is no longer - * within string memory range. - */ - cp2 = 0; /* If call fails, this is left untouched and won't match cp2 check. */ - (void) duk_unicode_decode_xutf8(thr, &p, p_start, p_end, &cp2); - if (cp2 >= 0xdc00UL && cp2 <= 0xdfffUL) { - cp1 = (duk_ucodepoint_t) (((cp1 - 0xd800UL) << 10) + (cp2 - 0xdc00UL) + 0x10000UL); - } - } - } else { - cp1 = DUK_UNICODE_CP_REPLACEMENT_CHARACTER; - } - - return cp1; -} - -/* - * duk_hstring charlen, when lazy charlen disabled - */ - -#if !defined(DUK_USE_HSTRING_LAZY_CLEN) -#if !defined(DUK_USE_HSTRING_CLEN) -#error non-lazy duk_hstring charlen but DUK_USE_HSTRING_CLEN not set -#endif -DUK_INTERNAL void duk_hstring_init_charlen(duk_hstring *h) { - duk_uint32_t clen; - - DUK_ASSERT(h != NULL); - DUK_ASSERT(!DUK_HSTRING_HAS_ASCII(h)); - DUK_ASSERT(!DUK_HEAPHDR_HAS_READONLY((duk_heaphdr *) h)); - - clen = duk_unicode_unvalidated_utf8_length(DUK_HSTRING_GET_DATA(h), DUK_HSTRING_GET_BYTELEN(h)); -#if defined(DUK_USE_STRLEN16) - DUK_ASSERT(clen <= 0xffffUL); /* Bytelength checked during interning. */ - h->clen16 = (duk_uint16_t) clen; -#else - h->clen = (duk_uint32_t) clen; -#endif - if (DUK_LIKELY(clen == DUK_HSTRING_GET_BYTELEN(h))) { - DUK_HSTRING_SET_ASCII(h); - } -} - -DUK_INTERNAL DUK_HOT duk_size_t duk_hstring_get_charlen(duk_hstring *h) { -#if defined(DUK_USE_STRLEN16) - return h->clen16; -#else - return h->clen; -#endif -} -#endif /* !DUK_USE_HSTRING_LAZY_CLEN */ - -/* - * duk_hstring charlen, when lazy charlen enabled - */ - -#if defined(DUK_USE_HSTRING_LAZY_CLEN) -#if defined(DUK_USE_HSTRING_CLEN) -DUK_LOCAL DUK_COLD duk_size_t duk__hstring_get_charlen_slowpath(duk_hstring *h) { - duk_size_t res; - - DUK_ASSERT(h->clen == 0); /* Checked by caller. */ - -#if defined(DUK_USE_ROM_STRINGS) - /* ROM strings have precomputed clen, but if the computed clen is zero - * we can still come here and can't write anything. - */ - if (DUK_HEAPHDR_HAS_READONLY((duk_heaphdr *) h)) { - return 0; - } -#endif - - res = duk_unicode_unvalidated_utf8_length(DUK_HSTRING_GET_DATA(h), DUK_HSTRING_GET_BYTELEN(h)); -#if defined(DUK_USE_STRLEN16) - DUK_ASSERT(res <= 0xffffUL); /* Bytelength checked during interning. */ - h->clen16 = (duk_uint16_t) res; -#else - h->clen = (duk_uint32_t) res; -#endif - if (DUK_LIKELY(res == DUK_HSTRING_GET_BYTELEN(h))) { - DUK_HSTRING_SET_ASCII(h); - } - return res; -} -#else /* DUK_USE_HSTRING_CLEN */ -DUK_LOCAL duk_size_t duk__hstring_get_charlen_slowpath(duk_hstring *h) { - if (DUK_LIKELY(DUK_HSTRING_HAS_ASCII(h))) { - /* Most practical strings will go here. */ - return DUK_HSTRING_GET_BYTELEN(h); - } else { - /* ASCII flag is lazy, so set it here. */ - duk_size_t res; - - /* XXX: here we could use the strcache to speed up the - * computation (matters for 'i < str.length' loops). - */ - - res = duk_unicode_unvalidated_utf8_length(DUK_HSTRING_GET_DATA(h), DUK_HSTRING_GET_BYTELEN(h)); - -#if defined(DUK_USE_ROM_STRINGS) - if (DUK_HEAPHDR_HAS_READONLY((duk_heaphdr *) h)) { - /* For ROM strings, can't write anything; ASCII flag - * is preset so we don't need to update it. - */ - return res; - } -#endif - if (DUK_LIKELY(res == DUK_HSTRING_GET_BYTELEN(h))) { - DUK_HSTRING_SET_ASCII(h); - } - return res; - } -} -#endif /* DUK_USE_HSTRING_CLEN */ - -#if defined(DUK_USE_HSTRING_CLEN) -DUK_INTERNAL DUK_HOT duk_size_t duk_hstring_get_charlen(duk_hstring *h) { -#if defined(DUK_USE_STRLEN16) - if (DUK_LIKELY(h->clen16 != 0)) { - return h->clen16; - } -#else - if (DUK_LIKELY(h->clen != 0)) { - return h->clen; - } -#endif - return duk__hstring_get_charlen_slowpath(h); -} -#else /* DUK_USE_HSTRING_CLEN */ -DUK_INTERNAL DUK_HOT duk_size_t duk_hstring_get_charlen(duk_hstring *h) { - /* Always use slow path. */ - return duk__hstring_get_charlen_slowpath(h); -} -#endif /* DUK_USE_HSTRING_CLEN */ -#endif /* DUK_USE_HSTRING_LAZY_CLEN */ - -/* - * Compare duk_hstring to an ASCII cstring. - */ - -DUK_INTERNAL duk_bool_t duk_hstring_equals_ascii_cstring(duk_hstring *h, const char *cstr) { - duk_size_t len; - - DUK_ASSERT(h != NULL); - DUK_ASSERT(cstr != NULL); - - len = DUK_STRLEN(cstr); - if (len != DUK_HSTRING_GET_BYTELEN(h)) { - return 0; - } - if (duk_memcmp((const void *) cstr, (const void *) DUK_HSTRING_GET_DATA(h), len) == 0) { - return 1; - } - return 0; -} -#line 1 "duk_hthread_alloc.c" -/* - * duk_hthread allocation and freeing. - */ - -/* #include duk_internal.h -> already included */ - -/* - * Allocate initial stacks for a thread. Note that 'thr' must be reachable - * as a garbage collection may be triggered by the allocation attempts. - * Returns zero (without leaking memory) if init fails. - */ - -DUK_INTERNAL duk_bool_t duk_hthread_init_stacks(duk_heap *heap, duk_hthread *thr) { - duk_size_t alloc_size; - duk_size_t i; - - DUK_ASSERT(heap != NULL); - DUK_ASSERT(thr != NULL); - DUK_ASSERT(thr->valstack == NULL); - DUK_ASSERT(thr->valstack_end == NULL); - DUK_ASSERT(thr->valstack_alloc_end == NULL); - DUK_ASSERT(thr->valstack_bottom == NULL); - DUK_ASSERT(thr->valstack_top == NULL); - DUK_ASSERT(thr->callstack_curr == NULL); - - /* valstack */ - DUK_ASSERT(DUK_VALSTACK_API_ENTRY_MINIMUM <= DUK_VALSTACK_INITIAL_SIZE); - alloc_size = sizeof(duk_tval) * DUK_VALSTACK_INITIAL_SIZE; - thr->valstack = (duk_tval *) DUK_ALLOC(heap, alloc_size); - if (!thr->valstack) { - goto fail; - } - duk_memzero(thr->valstack, alloc_size); - thr->valstack_end = thr->valstack + DUK_VALSTACK_API_ENTRY_MINIMUM; - thr->valstack_alloc_end = thr->valstack + DUK_VALSTACK_INITIAL_SIZE; - thr->valstack_bottom = thr->valstack; - thr->valstack_top = thr->valstack; - - for (i = 0; i < DUK_VALSTACK_INITIAL_SIZE; i++) { - DUK_TVAL_SET_UNDEFINED(&thr->valstack[i]); - } - - return 1; - -fail: - DUK_FREE(heap, thr->valstack); - DUK_ASSERT(thr->callstack_curr == NULL); - - thr->valstack = NULL; - return 0; -} - -/* For indirect allocs. */ - -DUK_INTERNAL void *duk_hthread_get_valstack_ptr(duk_heap *heap, void *ud) { - duk_hthread *thr = (duk_hthread *) ud; - DUK_UNREF(heap); - return (void *) thr->valstack; -} -#line 1 "duk_hthread_builtins.c" -/* - * Initialize built-in objects. Current thread must have a valstack - * and initialization errors may longjmp, so a setjmp() catch point - * must exist. - */ - -/* #include duk_internal.h -> already included */ - -/* - * Encoding constants, must match genbuiltins.py - */ - -#define DUK__PROP_FLAGS_BITS 3 -#define DUK__LENGTH_PROP_BITS 3 -#define DUK__NARGS_BITS 3 -#define DUK__PROP_TYPE_BITS 3 - -#define DUK__NARGS_VARARGS_MARKER 0x07 - -#define DUK__PROP_TYPE_DOUBLE 0 -#define DUK__PROP_TYPE_STRING 1 -#define DUK__PROP_TYPE_STRIDX 2 -#define DUK__PROP_TYPE_BUILTIN 3 -#define DUK__PROP_TYPE_UNDEFINED 4 -#define DUK__PROP_TYPE_BOOLEAN_TRUE 5 -#define DUK__PROP_TYPE_BOOLEAN_FALSE 6 -#define DUK__PROP_TYPE_ACCESSOR 7 - -/* - * Create built-in objects by parsing an init bitstream generated - * by genbuiltins.py. - */ - -#if defined(DUK_USE_ROM_OBJECTS) -#if defined(DUK_USE_ROM_GLOBAL_CLONE) || defined(DUK_USE_ROM_GLOBAL_INHERIT) -DUK_LOCAL void duk__duplicate_ram_global_object(duk_hthread *thr) { - duk_hobject *h_global; -#if defined(DUK_USE_ROM_GLOBAL_CLONE) - duk_hobject *h_oldglobal; - duk_uint8_t *props; - duk_size_t alloc_size; -#endif - duk_hobject *h_objenv; - - /* XXX: refactor into internal helper, duk_clone_hobject() */ - -#if defined(DUK_USE_ROM_GLOBAL_INHERIT) - /* Inherit from ROM-based global object: less RAM usage, less transparent. */ - h_global = duk_push_object_helper(thr, - DUK_HOBJECT_FLAG_EXTENSIBLE | DUK_HOBJECT_FLAG_FASTREFS | - DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_GLOBAL), - DUK_BIDX_GLOBAL); - DUK_ASSERT(h_global != NULL); -#elif defined(DUK_USE_ROM_GLOBAL_CLONE) - /* Clone the properties of the ROM-based global object to create a - * fully RAM-based global object. Uses more memory than the inherit - * model but more compliant. - */ - h_global = duk_push_object_helper(thr, - DUK_HOBJECT_FLAG_EXTENSIBLE | DUK_HOBJECT_FLAG_FASTREFS | - DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_GLOBAL), - DUK_BIDX_OBJECT_PROTOTYPE); - DUK_ASSERT(h_global != NULL); - h_oldglobal = thr->builtins[DUK_BIDX_GLOBAL]; - DUK_ASSERT(h_oldglobal != NULL); - - /* Copy the property table verbatim; this handles attributes etc. - * For ROM objects it's not necessary (or possible) to update - * refcounts so leave them as is. - */ - alloc_size = DUK_HOBJECT_P_ALLOC_SIZE(h_oldglobal); - DUK_ASSERT(alloc_size > 0); - props = DUK_ALLOC_CHECKED(thr, alloc_size); - DUK_ASSERT(props != NULL); - DUK_ASSERT(DUK_HOBJECT_GET_PROPS(thr->heap, h_oldglobal) != NULL); - duk_memcpy((void *) props, (const void *) DUK_HOBJECT_GET_PROPS(thr->heap, h_oldglobal), alloc_size); - - /* XXX: keep property attributes or tweak them here? - * Properties will now be non-configurable even when they're - * normally configurable for the global object. - */ - - DUK_ASSERT(DUK_HOBJECT_GET_PROPS(thr->heap, h_global) == NULL); - DUK_HOBJECT_SET_PROPS(thr->heap, h_global, props); - DUK_HOBJECT_SET_ESIZE(h_global, DUK_HOBJECT_GET_ESIZE(h_oldglobal)); - DUK_HOBJECT_SET_ENEXT(h_global, DUK_HOBJECT_GET_ENEXT(h_oldglobal)); - DUK_HOBJECT_SET_ASIZE(h_global, DUK_HOBJECT_GET_ASIZE(h_oldglobal)); - DUK_HOBJECT_SET_HSIZE(h_global, DUK_HOBJECT_GET_HSIZE(h_oldglobal)); -#else -#error internal error in config defines -#endif - - duk_hobject_compact_props(thr, h_global); - DUK_ASSERT(thr->builtins[DUK_BIDX_GLOBAL] != NULL); - DUK_ASSERT( - !DUK_HEAPHDR_NEEDS_REFCOUNT_UPDATE((duk_heaphdr *) thr->builtins[DUK_BIDX_GLOBAL])); /* no need to decref: ROM object */ - thr->builtins[DUK_BIDX_GLOBAL] = h_global; - DUK_HOBJECT_INCREF(thr, h_global); - DUK_D(DUK_DPRINT("duplicated global object: %!O", h_global)); - - /* Create a fresh object environment for the global scope. This is - * needed so that the global scope points to the newly created RAM-based - * global object. - */ - h_objenv = - (duk_hobject *) duk_hobjenv_alloc(thr, - DUK_HOBJECT_FLAG_EXTENSIBLE | DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_OBJENV)); - DUK_ASSERT(h_objenv != NULL); - DUK_ASSERT(DUK_HOBJECT_GET_PROTOTYPE(thr->heap, h_objenv) == NULL); - duk_push_hobject(thr, h_objenv); - - DUK_ASSERT(h_global != NULL); - ((duk_hobjenv *) h_objenv)->target = h_global; - DUK_HOBJECT_INCREF(thr, h_global); - DUK_ASSERT(((duk_hobjenv *) h_objenv)->has_this == 0); - - DUK_ASSERT(thr->builtins[DUK_BIDX_GLOBAL_ENV] != NULL); - DUK_ASSERT(!DUK_HEAPHDR_NEEDS_REFCOUNT_UPDATE( - (duk_heaphdr *) thr->builtins[DUK_BIDX_GLOBAL_ENV])); /* no need to decref: ROM object */ - thr->builtins[DUK_BIDX_GLOBAL_ENV] = h_objenv; - DUK_HOBJECT_INCREF(thr, h_objenv); - DUK_D(DUK_DPRINT("duplicated global env: %!O", h_objenv)); - - DUK_HOBJENV_ASSERT_VALID((duk_hobjenv *) h_objenv); - - duk_pop_2(thr); /* Pop global object and global env. */ -} -#endif /* DUK_USE_ROM_GLOBAL_CLONE || DUK_USE_ROM_GLOBAL_INHERIT */ - -DUK_INTERNAL void duk_hthread_create_builtin_objects(duk_hthread *thr) { - /* Setup builtins from ROM objects. All heaps/threads will share - * the same readonly objects. - */ - duk_small_uint_t i; - - for (i = 0; i < DUK_NUM_BUILTINS; i++) { - duk_hobject *h; - h = (duk_hobject *) DUK_LOSE_CONST(duk_rom_builtins_bidx[i]); - DUK_ASSERT(h != NULL); - thr->builtins[i] = h; - } - -#if defined(DUK_USE_ROM_GLOBAL_CLONE) || defined(DUK_USE_ROM_GLOBAL_INHERIT) - /* By default the global object is read-only which is often much - * more of an issue than having read-only built-in objects (like - * RegExp, Date, etc). Use a RAM-based copy of the global object - * and the global environment object for convenience. - */ - duk__duplicate_ram_global_object(thr); -#endif -} -#else /* DUK_USE_ROM_OBJECTS */ -DUK_LOCAL void duk__push_stridx(duk_hthread *thr, duk_bitdecoder_ctx *bd) { - duk_small_uint_t n; - - n = (duk_small_uint_t) duk_bd_decode_varuint(bd); - DUK_ASSERT_DISABLE(n >= 0); /* unsigned */ - DUK_ASSERT(n < DUK_HEAP_NUM_STRINGS); - duk_push_hstring_stridx(thr, n); -} -DUK_LOCAL void duk__push_string(duk_hthread *thr, duk_bitdecoder_ctx *bd) { - /* XXX: built-ins data could provide a maximum length that is - * actually needed; bitpacked max length is now 256 bytes. - */ - duk_uint8_t tmp[DUK_BD_BITPACKED_STRING_MAXLEN]; - duk_small_uint_t len; - - len = duk_bd_decode_bitpacked_string(bd, tmp); - duk_push_lstring(thr, (const char *) tmp, (duk_size_t) len); -} -DUK_LOCAL void duk__push_stridx_or_string(duk_hthread *thr, duk_bitdecoder_ctx *bd) { - duk_small_uint_t n; - - n = (duk_small_uint_t) duk_bd_decode_varuint(bd); - if (n == 0) { - duk__push_string(thr, bd); - } else { - n--; - DUK_ASSERT(n < DUK_HEAP_NUM_STRINGS); - duk_push_hstring_stridx(thr, n); - } -} -DUK_LOCAL void duk__push_double(duk_hthread *thr, duk_bitdecoder_ctx *bd) { - duk_double_union du; - duk_small_uint_t i; - - for (i = 0; i < 8; i++) { - /* Encoding endianness must match target memory layout, - * build scripts and genbuiltins.py must ensure this. - */ - du.uc[i] = (duk_uint8_t) duk_bd_decode(bd, 8); - } - - duk_push_number(thr, du.d); /* push operation normalizes NaNs */ -} - -DUK_INTERNAL void duk_hthread_create_builtin_objects(duk_hthread *thr) { - duk_bitdecoder_ctx bd_ctx; - duk_bitdecoder_ctx *bd = &bd_ctx; /* convenience */ - duk_hobject *h; - duk_small_uint_t i, j; - - DUK_D(DUK_DPRINT("INITBUILTINS BEGIN: DUK_NUM_BUILTINS=%d, DUK_NUM_BUILTINS_ALL=%d", - (int) DUK_NUM_BUILTINS, - (int) DUK_NUM_ALL_BUILTINS)); - - duk_memzero(&bd_ctx, sizeof(bd_ctx)); - bd->data = (const duk_uint8_t *) duk_builtins_data; - bd->length = (duk_size_t) DUK_BUILTINS_DATA_LENGTH; - - /* - * First create all built-in bare objects on the empty valstack. - * - * Built-ins in the index range [0,DUK_NUM_BUILTINS-1] have value - * stack indices matching their eventual thr->builtins[] index. - * - * Built-ins in the index range [DUK_NUM_BUILTINS,DUK_NUM_ALL_BUILTINS] - * will exist on the value stack during init but won't be placed - * into thr->builtins[]. These are objects referenced in some way - * from thr->builtins[] roots but which don't need to be indexed by - * Duktape through thr->builtins[] (e.g. user custom objects). - * - * Internal prototypes will be incorrect (NULL) at this stage. - */ - - duk_require_stack(thr, DUK_NUM_ALL_BUILTINS); - - DUK_DD(DUK_DDPRINT("create empty built-ins")); - DUK_ASSERT_TOP(thr, 0); - for (i = 0; i < DUK_NUM_ALL_BUILTINS; i++) { - duk_small_uint_t class_num; - duk_small_int_t len = -1; /* must be signed */ - - class_num = (duk_small_uint_t) duk_bd_decode_varuint(bd); - len = (duk_small_int_t) duk_bd_decode_flagged_signed(bd, DUK__LENGTH_PROP_BITS, (duk_int32_t) -1 /*def_value*/); - - if (class_num == DUK_HOBJECT_CLASS_FUNCTION) { - duk_small_uint_t natidx; - duk_small_int_t c_nargs; /* must hold DUK_VARARGS */ - duk_c_function c_func; - duk_int16_t magic; - - DUK_DDD(DUK_DDDPRINT("len=%ld", (long) len)); - DUK_ASSERT(len >= 0); - - natidx = (duk_small_uint_t) duk_bd_decode_varuint(bd); - DUK_ASSERT(natidx != 0); - c_func = duk_bi_native_functions[natidx]; - DUK_ASSERT(c_func != NULL); - - c_nargs = (duk_small_int_t) duk_bd_decode_flagged_signed(bd, DUK__NARGS_BITS, len /*def_value*/); - if (c_nargs == DUK__NARGS_VARARGS_MARKER) { - c_nargs = DUK_VARARGS; - } - - /* XXX: set magic directly here? (it could share the c_nargs arg) */ - (void) duk_push_c_function_builtin(thr, c_func, c_nargs); - h = duk_known_hobject(thr, -1); - - /* Currently all built-in native functions are strict. - * duk_push_c_function() now sets strict flag, so - * assert for it. - */ - DUK_ASSERT(DUK_HOBJECT_HAS_STRICT(h)); - - /* XXX: function properties */ - - duk__push_stridx_or_string(thr, bd); -#if defined(DUK_USE_FUNC_NAME_PROPERTY) - duk_xdef_prop_stridx_short(thr, -2, DUK_STRIDX_NAME, DUK_PROPDESC_FLAGS_C); -#else - duk_pop(thr); /* Not very ideal but good enough for now. */ -#endif - - /* Almost all global level Function objects are constructable - * but not all: Function.prototype is a non-constructable, - * callable Function. - */ - if (duk_bd_decode_flag(bd)) { - DUK_ASSERT(DUK_HOBJECT_HAS_CONSTRUCTABLE(h)); - } else { - DUK_HOBJECT_CLEAR_CONSTRUCTABLE(h); - } - - /* Cast converts magic to 16-bit signed value */ - magic = (duk_int16_t) duk_bd_decode_varuint(bd); - ((duk_hnatfunc *) h)->magic = magic; - } else if (class_num == DUK_HOBJECT_CLASS_ARRAY) { - duk_push_array(thr); - } else if (class_num == DUK_HOBJECT_CLASS_OBJENV) { - duk_hobjenv *env; - duk_hobject *global; - - DUK_ASSERT(i == DUK_BIDX_GLOBAL_ENV); - DUK_ASSERT(DUK_BIDX_GLOBAL_ENV > DUK_BIDX_GLOBAL); - - env = duk_hobjenv_alloc(thr, - DUK_HOBJECT_FLAG_EXTENSIBLE | DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_OBJENV)); - DUK_ASSERT(env->target == NULL); - duk_push_hobject(thr, (duk_hobject *) env); - - global = duk_known_hobject(thr, DUK_BIDX_GLOBAL); - DUK_ASSERT(global != NULL); - env->target = global; - DUK_HOBJECT_INCREF(thr, global); - DUK_ASSERT(env->has_this == 0); - - DUK_HOBJENV_ASSERT_VALID(env); - } else { - DUK_ASSERT(class_num != DUK_HOBJECT_CLASS_DECENV); - - (void) duk_push_object_helper(thr, - DUK_HOBJECT_FLAG_FASTREFS | DUK_HOBJECT_FLAG_EXTENSIBLE, - -1); /* no prototype or class yet */ - } - - h = duk_known_hobject(thr, -1); - DUK_HOBJECT_SET_CLASS_NUMBER(h, class_num); - - if (i < DUK_NUM_BUILTINS) { - thr->builtins[i] = h; - DUK_HOBJECT_INCREF(thr, &h->hdr); - } - - if (len >= 0) { - /* In ES2015+ built-in function object .length property - * has property attributes C (configurable only): - * http://www.ecma-international.org/ecma-262/7.0/#sec-ecmascript-standard-built-in-objects - * - * Array.prototype remains an Array instance in ES2015+ - * and its length has attributes W (writable only). - * Because .length is now virtual for duk_harray, it is - * not encoded explicitly in init data. - */ - - DUK_ASSERT(class_num != DUK_HOBJECT_CLASS_ARRAY); /* .length is virtual */ - duk_push_int(thr, len); - duk_xdef_prop_stridx_short(thr, -2, DUK_STRIDX_LENGTH, DUK_PROPDESC_FLAGS_C); - } - - /* enable exotic behaviors last */ - - if (class_num == DUK_HOBJECT_CLASS_ARRAY) { - DUK_ASSERT(DUK_HOBJECT_HAS_EXOTIC_ARRAY(h)); /* set by duk_push_array() */ - } - if (class_num == DUK_HOBJECT_CLASS_STRING) { - DUK_HOBJECT_SET_EXOTIC_STRINGOBJ(h); - } - - /* some assertions */ - - DUK_ASSERT(DUK_HOBJECT_HAS_EXTENSIBLE(h)); - /* DUK_HOBJECT_FLAG_CONSTRUCTABLE varies */ - DUK_ASSERT(!DUK_HOBJECT_HAS_BOUNDFUNC(h)); - DUK_ASSERT(!DUK_HOBJECT_HAS_COMPFUNC(h)); - /* DUK_HOBJECT_FLAG_NATFUNC varies */ - DUK_ASSERT(!DUK_HOBJECT_IS_THREAD(h)); - DUK_ASSERT(!DUK_HOBJECT_IS_PROXY(h)); - DUK_ASSERT(!DUK_HOBJECT_HAS_ARRAY_PART(h) || class_num == DUK_HOBJECT_CLASS_ARRAY); - /* DUK_HOBJECT_FLAG_STRICT varies */ - DUK_ASSERT(!DUK_HOBJECT_HAS_NATFUNC(h) || /* all native functions have NEWENV */ - DUK_HOBJECT_HAS_NEWENV(h)); - DUK_ASSERT(!DUK_HOBJECT_HAS_NAMEBINDING(h)); - DUK_ASSERT(!DUK_HOBJECT_HAS_CREATEARGS(h)); - /* DUK_HOBJECT_FLAG_EXOTIC_ARRAY varies */ - /* DUK_HOBJECT_FLAG_EXOTIC_STRINGOBJ varies */ - DUK_ASSERT(!DUK_HOBJECT_HAS_EXOTIC_ARGUMENTS(h)); - - DUK_DDD(DUK_DDDPRINT("created built-in %ld, class=%ld, length=%ld", (long) i, (long) class_num, (long) len)); - } - - /* - * Then decode the builtins init data (see genbuiltins.py) to - * init objects. Internal prototypes are set at this stage, - * with thr->builtins[] populated. - */ - - DUK_DD(DUK_DDPRINT("initialize built-in object properties")); - for (i = 0; i < DUK_NUM_ALL_BUILTINS; i++) { - duk_small_uint_t t; - duk_small_uint_t num; - - DUK_DDD(DUK_DDDPRINT("initializing built-in object at index %ld", (long) i)); - h = duk_known_hobject(thr, (duk_idx_t) i); - - t = (duk_small_uint_t) duk_bd_decode_varuint(bd); - if (t > 0) { - t--; - DUK_DDD(DUK_DDDPRINT("set internal prototype: built-in %ld", (long) t)); - DUK_HOBJECT_SET_PROTOTYPE_UPDREF(thr, h, duk_known_hobject(thr, (duk_idx_t) t)); - } else if (DUK_HOBJECT_IS_NATFUNC(h)) { - /* Standard native built-ins cannot inherit from - * %NativeFunctionPrototype%, they are required to - * inherit from Function.prototype directly. - */ - DUK_ASSERT(thr->builtins[DUK_BIDX_FUNCTION_PROTOTYPE] != NULL); - DUK_HOBJECT_SET_PROTOTYPE_UPDREF(thr, h, thr->builtins[DUK_BIDX_FUNCTION_PROTOTYPE]); - } - - t = (duk_small_uint_t) duk_bd_decode_varuint(bd); - if (t > 0) { - /* 'prototype' property for all built-in objects (which have it) has attributes: - * [[Writable]] = false, - * [[Enumerable]] = false, - * [[Configurable]] = false - */ - t--; - DUK_DDD(DUK_DDDPRINT("set external prototype: built-in %ld", (long) t)); - duk_dup(thr, (duk_idx_t) t); - duk_xdef_prop_stridx(thr, (duk_idx_t) i, DUK_STRIDX_PROTOTYPE, DUK_PROPDESC_FLAGS_NONE); - } - - t = (duk_small_uint_t) duk_bd_decode_varuint(bd); - if (t > 0) { - /* 'constructor' property for all built-in objects (which have it) has attributes: - * [[Writable]] = true, - * [[Enumerable]] = false, - * [[Configurable]] = true - */ - t--; - DUK_DDD(DUK_DDDPRINT("set external constructor: built-in %ld", (long) t)); - duk_dup(thr, (duk_idx_t) t); - duk_xdef_prop_stridx(thr, (duk_idx_t) i, DUK_STRIDX_CONSTRUCTOR, DUK_PROPDESC_FLAGS_WC); - } - - /* normal valued properties */ - num = (duk_small_uint_t) duk_bd_decode_varuint(bd); - DUK_DDD(DUK_DDDPRINT("built-in object %ld, %ld normal valued properties", (long) i, (long) num)); - for (j = 0; j < num; j++) { - duk_small_uint_t defprop_flags; - - duk__push_stridx_or_string(thr, bd); - - /* - * Property attribute defaults are defined in E5 Section 15 (first - * few pages); there is a default for all properties and a special - * default for 'length' properties. Variation from the defaults is - * signaled using a single flag bit in the bitstream. - */ - - defprop_flags = (duk_small_uint_t) duk_bd_decode_flagged(bd, - DUK__PROP_FLAGS_BITS, - (duk_uint32_t) DUK_PROPDESC_FLAGS_WC); - defprop_flags |= DUK_DEFPROP_FORCE | DUK_DEFPROP_HAVE_VALUE | DUK_DEFPROP_HAVE_WRITABLE | - DUK_DEFPROP_HAVE_ENUMERABLE | - DUK_DEFPROP_HAVE_CONFIGURABLE; /* Defaults for data properties. */ - - /* The writable, enumerable, configurable flags in prop_flags - * match both duk_def_prop() and internal property flags. - */ - DUK_ASSERT(DUK_PROPDESC_FLAG_WRITABLE == DUK_DEFPROP_WRITABLE); - DUK_ASSERT(DUK_PROPDESC_FLAG_ENUMERABLE == DUK_DEFPROP_ENUMERABLE); - DUK_ASSERT(DUK_PROPDESC_FLAG_CONFIGURABLE == DUK_DEFPROP_CONFIGURABLE); - - t = (duk_small_uint_t) duk_bd_decode(bd, DUK__PROP_TYPE_BITS); - - DUK_DDD(DUK_DDDPRINT("built-in %ld, normal-valued property %ld, key %!T, flags 0x%02lx, type %ld", - (long) i, - (long) j, - duk_get_tval(thr, -1), - (unsigned long) defprop_flags, - (long) t)); - - switch (t) { - case DUK__PROP_TYPE_DOUBLE: { - duk__push_double(thr, bd); - break; - } - case DUK__PROP_TYPE_STRING: { - duk__push_string(thr, bd); - break; - } - case DUK__PROP_TYPE_STRIDX: { - duk__push_stridx(thr, bd); - break; - } - case DUK__PROP_TYPE_BUILTIN: { - duk_small_uint_t bidx; - - bidx = (duk_small_uint_t) duk_bd_decode_varuint(bd); - duk_dup(thr, (duk_idx_t) bidx); - break; - } - case DUK__PROP_TYPE_UNDEFINED: { - duk_push_undefined(thr); - break; - } - case DUK__PROP_TYPE_BOOLEAN_TRUE: { - duk_push_true(thr); - break; - } - case DUK__PROP_TYPE_BOOLEAN_FALSE: { - duk_push_false(thr); - break; - } - case DUK__PROP_TYPE_ACCESSOR: { - duk_small_uint_t natidx_getter = (duk_small_uint_t) duk_bd_decode_varuint(bd); - duk_small_uint_t natidx_setter = (duk_small_uint_t) duk_bd_decode_varuint(bd); - duk_small_uint_t accessor_magic = (duk_small_uint_t) duk_bd_decode_varuint(bd); - duk_c_function c_func_getter; - duk_c_function c_func_setter; - - DUK_DDD(DUK_DDDPRINT( - "built-in accessor property: objidx=%ld, key=%!T, getteridx=%ld, setteridx=%ld, flags=0x%04lx", - (long) i, - duk_get_tval(thr, -1), - (long) natidx_getter, - (long) natidx_setter, - (unsigned long) defprop_flags)); - - c_func_getter = duk_bi_native_functions[natidx_getter]; - if (c_func_getter != NULL) { - duk_push_c_function_builtin_noconstruct(thr, c_func_getter, 0); /* always 0 args */ - duk_set_magic(thr, -1, (duk_int_t) accessor_magic); - defprop_flags |= DUK_DEFPROP_HAVE_GETTER; - } - c_func_setter = duk_bi_native_functions[natidx_setter]; - if (c_func_setter != NULL) { - duk_push_c_function_builtin_noconstruct(thr, c_func_setter, 1); /* always 1 arg */ - duk_set_magic(thr, -1, (duk_int_t) accessor_magic); - defprop_flags |= DUK_DEFPROP_HAVE_SETTER; - } - - /* Writable flag doesn't make sense for an accessor. */ - DUK_ASSERT((defprop_flags & DUK_PROPDESC_FLAG_WRITABLE) == 0); /* genbuiltins.py ensures */ - - defprop_flags &= ~(DUK_DEFPROP_HAVE_VALUE | DUK_DEFPROP_HAVE_WRITABLE); - defprop_flags |= DUK_DEFPROP_HAVE_ENUMERABLE | DUK_DEFPROP_HAVE_CONFIGURABLE; - break; - } - default: { - /* exhaustive */ - DUK_UNREACHABLE(); - } - } - - duk_def_prop(thr, (duk_idx_t) i, defprop_flags); - DUK_ASSERT_TOP(thr, DUK_NUM_ALL_BUILTINS); - } - - /* native function properties */ - num = (duk_small_uint_t) duk_bd_decode_varuint(bd); - DUK_DDD(DUK_DDDPRINT("built-in object %ld, %ld function valued properties", (long) i, (long) num)); - for (j = 0; j < num; j++) { - duk_hstring *h_key; - duk_small_uint_t natidx; - duk_int_t c_nargs; /* must hold DUK_VARARGS */ - duk_small_uint_t c_length; - duk_int16_t magic; - duk_c_function c_func; - duk_hnatfunc *h_func; -#if defined(DUK_USE_LIGHTFUNC_BUILTINS) - duk_small_int_t lightfunc_eligible; -#endif - duk_small_uint_t defprop_flags; - - duk__push_stridx_or_string(thr, bd); - h_key = duk_known_hstring(thr, -1); - DUK_UNREF(h_key); - natidx = (duk_small_uint_t) duk_bd_decode_varuint(bd); - - c_length = (duk_small_uint_t) duk_bd_decode(bd, DUK__LENGTH_PROP_BITS); - c_nargs = (duk_int_t) duk_bd_decode_flagged(bd, DUK__NARGS_BITS, (duk_uint32_t) c_length /*def_value*/); - if (c_nargs == DUK__NARGS_VARARGS_MARKER) { - c_nargs = DUK_VARARGS; - } - - c_func = duk_bi_native_functions[natidx]; - - DUK_DDD( - DUK_DDDPRINT("built-in %ld, function-valued property %ld, key %!O, natidx %ld, length %ld, nargs %ld", - (long) i, - (long) j, - (duk_heaphdr *) h_key, - (long) natidx, - (long) c_length, - (c_nargs == DUK_VARARGS ? (long) -1 : (long) c_nargs))); - - /* Cast converts magic to 16-bit signed value */ - magic = (duk_int16_t) duk_bd_decode_varuint(bd); - -#if defined(DUK_USE_LIGHTFUNC_BUILTINS) - lightfunc_eligible = - ((c_nargs >= DUK_LFUNC_NARGS_MIN && c_nargs <= DUK_LFUNC_NARGS_MAX) || (c_nargs == DUK_VARARGS)) && - (c_length <= DUK_LFUNC_LENGTH_MAX) && (magic >= DUK_LFUNC_MAGIC_MIN && magic <= DUK_LFUNC_MAGIC_MAX); - - /* These functions have trouble working as lightfuncs. - * Some of them have specific asserts and some may have - * additional properties (e.g. 'require.id' may be written). - */ - if (c_func == duk_bi_global_object_eval) { - lightfunc_eligible = 0; - } -#if defined(DUK_USE_COROUTINE_SUPPORT) - if (c_func == duk_bi_thread_yield || c_func == duk_bi_thread_resume) { - lightfunc_eligible = 0; - } -#endif - if (c_func == duk_bi_function_prototype_call || c_func == duk_bi_function_prototype_apply || - c_func == duk_bi_reflect_apply || c_func == duk_bi_reflect_construct) { - lightfunc_eligible = 0; - } - - if (lightfunc_eligible) { - duk_tval tv_lfunc; - duk_small_uint_t lf_nargs = - (duk_small_uint_t) (c_nargs == DUK_VARARGS ? DUK_LFUNC_NARGS_VARARGS : c_nargs); - duk_small_uint_t lf_flags = DUK_LFUNC_FLAGS_PACK(magic, c_length, lf_nargs); - DUK_TVAL_SET_LIGHTFUNC(&tv_lfunc, c_func, lf_flags); - duk_push_tval(thr, &tv_lfunc); - DUK_D(DUK_DPRINT("built-in function eligible as light function: i=%d, j=%d c_length=%ld, " - "c_nargs=%ld, magic=%ld -> %!iT", - (int) i, - (int) j, - (long) c_length, - (long) c_nargs, - (long) magic, - duk_get_tval(thr, -1))); - goto lightfunc_skip; - } - - DUK_D(DUK_DPRINT( - "built-in function NOT ELIGIBLE as light function: i=%d, j=%d c_length=%ld, c_nargs=%ld, magic=%ld", - (int) i, - (int) j, - (long) c_length, - (long) c_nargs, - (long) magic)); -#endif /* DUK_USE_LIGHTFUNC_BUILTINS */ - - /* [ (builtin objects) name ] */ - - duk_push_c_function_builtin_noconstruct(thr, c_func, c_nargs); - h_func = duk_known_hnatfunc(thr, -1); - DUK_UNREF(h_func); - - /* XXX: add into init data? */ - - /* Special call handling, not described in init data. */ - if (c_func == duk_bi_global_object_eval || c_func == duk_bi_function_prototype_call || - c_func == duk_bi_function_prototype_apply || c_func == duk_bi_reflect_apply || - c_func == duk_bi_reflect_construct) { - DUK_HOBJECT_SET_SPECIAL_CALL((duk_hobject *) h_func); - } - - /* Currently all built-in native functions are strict. - * This doesn't matter for many functions, but e.g. - * String.prototype.charAt (and other string functions) - * rely on being strict so that their 'this' binding is - * not automatically coerced. - */ - DUK_HOBJECT_SET_STRICT((duk_hobject *) h_func); - - /* No built-in functions are constructable except the top - * level ones (Number, etc). - */ - DUK_ASSERT(!DUK_HOBJECT_HAS_CONSTRUCTABLE((duk_hobject *) h_func)); - - /* XXX: any way to avoid decoding magic bit; there are quite - * many function properties and relatively few with magic values. - */ - h_func->magic = magic; - - /* [ (builtin objects) name func ] */ - - duk_push_uint(thr, c_length); - duk_xdef_prop_stridx_short(thr, -2, DUK_STRIDX_LENGTH, DUK_PROPDESC_FLAGS_C); - - duk_dup_m2(thr); - duk_xdef_prop_stridx_short(thr, -2, DUK_STRIDX_NAME, DUK_PROPDESC_FLAGS_C); - - /* XXX: other properties of function instances; 'arguments', 'caller'. */ - - DUK_DD(DUK_DDPRINT("built-in object %ld, function property %ld -> %!T", - (long) i, - (long) j, - (duk_tval *) duk_get_tval(thr, -1))); - - /* [ (builtin objects) name func ] */ - - /* - * The default property attributes are correct for all - * function valued properties of built-in objects now. - */ - -#if defined(DUK_USE_LIGHTFUNC_BUILTINS) - lightfunc_skip: -#endif - - defprop_flags = (duk_small_uint_t) duk_bd_decode_flagged(bd, - DUK__PROP_FLAGS_BITS, - (duk_uint32_t) DUK_PROPDESC_FLAGS_WC); - defprop_flags |= DUK_DEFPROP_FORCE | DUK_DEFPROP_HAVE_VALUE | DUK_DEFPROP_HAVE_WRITABLE | - DUK_DEFPROP_HAVE_ENUMERABLE | DUK_DEFPROP_HAVE_CONFIGURABLE; - DUK_ASSERT(DUK_PROPDESC_FLAG_WRITABLE == DUK_DEFPROP_WRITABLE); - DUK_ASSERT(DUK_PROPDESC_FLAG_ENUMERABLE == DUK_DEFPROP_ENUMERABLE); - DUK_ASSERT(DUK_PROPDESC_FLAG_CONFIGURABLE == DUK_DEFPROP_CONFIGURABLE); - - duk_def_prop(thr, (duk_idx_t) i, defprop_flags); - - /* [ (builtin objects) ] */ - } - } - - /* - * Special post-tweaks, for cases not covered by the init data format. - * - * - Set Date.prototype.toGMTString to Date.prototype.toUTCString. - * toGMTString is required to have the same Function object as - * toUTCString in E5 Section B.2.6. Note that while Smjs respects - * this, V8 does not (the Function objects are distinct). - * - * - Make DoubleError non-extensible. - * - * - Add info about most important effective compile options to Duktape. - * - * - Possibly remove some properties (values or methods) which are not - * desirable with current feature options but are not currently - * conditional in init data. - */ - -#if defined(DUK_USE_DATE_BUILTIN) - duk_get_prop_stridx_short(thr, DUK_BIDX_DATE_PROTOTYPE, DUK_STRIDX_TO_UTC_STRING); - duk_xdef_prop_stridx_short(thr, DUK_BIDX_DATE_PROTOTYPE, DUK_STRIDX_TO_GMT_STRING, DUK_PROPDESC_FLAGS_WC); -#endif - - h = duk_known_hobject(thr, DUK_BIDX_DOUBLE_ERROR); - DUK_HOBJECT_CLEAR_EXTENSIBLE(h); - -#if !defined(DUK_USE_ES6_OBJECT_PROTO_PROPERTY) - DUK_DD(DUK_DDPRINT("delete Object.prototype.__proto__ built-in which is not enabled in features")); - (void) duk_hobject_delprop_raw(thr, - thr->builtins[DUK_BIDX_OBJECT_PROTOTYPE], - DUK_HTHREAD_STRING___PROTO__(thr), - DUK_DELPROP_FLAG_THROW); -#endif - -#if !defined(DUK_USE_ES6_OBJECT_SETPROTOTYPEOF) - DUK_DD(DUK_DDPRINT("delete Object.setPrototypeOf built-in which is not enabled in features")); - (void) duk_hobject_delprop_raw(thr, - thr->builtins[DUK_BIDX_OBJECT_CONSTRUCTOR], - DUK_HTHREAD_STRING_SET_PROTOTYPE_OF(thr), - DUK_DELPROP_FLAG_THROW); -#endif - - /* XXX: relocate */ - duk_push_string(thr, - /* Endianness indicator */ -#if defined(DUK_USE_INTEGER_LE) - "l" -#elif defined(DUK_USE_INTEGER_BE) - "b" -#elif defined(DUK_USE_INTEGER_ME) /* integer mixed endian not really used now */ - "m" -#else - "?" -#endif -#if defined(DUK_USE_DOUBLE_LE) - "l" -#elif defined(DUK_USE_DOUBLE_BE) - "b" -#elif defined(DUK_USE_DOUBLE_ME) - "m" -#else - "?" -#endif - " " - /* Packed or unpacked tval */ -#if defined(DUK_USE_PACKED_TVAL) - "p" -#else - "u" -#endif -#if defined(DUK_USE_FASTINT) - "f" -#endif - " " - /* Low memory/performance options */ -#if defined(DUK_USE_STRTAB_PTRCOMP) - "s" -#endif -#if !defined(DUK_USE_HEAPPTR16) && !defined(DUK_DATAPTR16) && !defined(DUK_FUNCPTR16) - "n" -#endif -#if defined(DUK_USE_HEAPPTR16) - "h" -#endif -#if defined(DUK_USE_DATAPTR16) - "d" -#endif -#if defined(DUK_USE_FUNCPTR16) - "f" -#endif -#if defined(DUK_USE_REFCOUNT16) - "R" -#endif -#if defined(DUK_USE_STRHASH16) - "H" -#endif -#if defined(DUK_USE_STRLEN16) - "S" -#endif -#if defined(DUK_USE_BUFLEN16) - "B" -#endif -#if defined(DUK_USE_OBJSIZES16) - "O" -#endif -#if defined(DUK_USE_LIGHTFUNC_BUILTINS) - "L" -#endif -#if defined(DUK_USE_ROM_STRINGS) || defined(DUK_USE_ROM_OBJECTS) - /* XXX: This won't be shown in practice now - * because this code is not run when builtins - * are in ROM. - */ - "Z" -#endif -#if defined(DUK_USE_LITCACHE_SIZE) - "l" -#endif - " " - /* Object property allocation layout */ -#if defined(DUK_USE_HOBJECT_LAYOUT_1) - "p1" -#elif defined(DUK_USE_HOBJECT_LAYOUT_2) - "p2" -#elif defined(DUK_USE_HOBJECT_LAYOUT_3) - "p3" -#else - "p?" -#endif - " " - /* Alignment guarantee */ -#if (DUK_USE_ALIGN_BY == 4) - "a4" -#elif (DUK_USE_ALIGN_BY == 8) - "a8" -#elif (DUK_USE_ALIGN_BY == 1) - "a1" -#else -#error invalid DUK_USE_ALIGN_BY -#endif - " " - /* Architecture, OS, and compiler strings */ - DUK_USE_ARCH_STRING " " DUK_USE_OS_STRING " " DUK_USE_COMPILER_STRING); - duk_xdef_prop_stridx_short(thr, DUK_BIDX_DUKTAPE, DUK_STRIDX_ENV, DUK_PROPDESC_FLAGS_WC); - - /* - * Since built-ins are not often extended, compact them. - */ - - DUK_DD(DUK_DDPRINT("compact built-ins")); - for (i = 0; i < DUK_NUM_ALL_BUILTINS; i++) { - duk_hobject_compact_props(thr, duk_known_hobject(thr, (duk_idx_t) i)); - } - - DUK_D(DUK_DPRINT("INITBUILTINS END")); - -#if defined(DUK_USE_DEBUG_LEVEL) && (DUK_USE_DEBUG_LEVEL >= 1) - for (i = 0; i < DUK_NUM_ALL_BUILTINS; i++) { - DUK_DD(DUK_DDPRINT("built-in object %ld after initialization and compacting: %!@iO", - (long) i, - (duk_heaphdr *) duk_require_hobject(thr, (duk_idx_t) i))); - } -#endif - - /* - * Pop built-ins from stack: they are now INCREF'd and - * reachable from the builtins[] array or indirectly - * through builtins[]. - */ - - duk_set_top(thr, 0); - DUK_ASSERT_TOP(thr, 0); -} -#endif /* DUK_USE_ROM_OBJECTS */ - -DUK_INTERNAL void duk_hthread_copy_builtin_objects(duk_hthread *thr_from, duk_hthread *thr_to) { - duk_small_uint_t i; - - for (i = 0; i < DUK_NUM_BUILTINS; i++) { - thr_to->builtins[i] = thr_from->builtins[i]; - DUK_HOBJECT_INCREF_ALLOWNULL(thr_to, thr_to->builtins[i]); /* side effect free */ - } -} - -/* automatic undefs */ -#undef DUK__LENGTH_PROP_BITS -#undef DUK__NARGS_BITS -#undef DUK__NARGS_VARARGS_MARKER -#undef DUK__PROP_FLAGS_BITS -#undef DUK__PROP_TYPE_ACCESSOR -#undef DUK__PROP_TYPE_BITS -#undef DUK__PROP_TYPE_BOOLEAN_FALSE -#undef DUK__PROP_TYPE_BOOLEAN_TRUE -#undef DUK__PROP_TYPE_BUILTIN -#undef DUK__PROP_TYPE_DOUBLE -#undef DUK__PROP_TYPE_STRIDX -#undef DUK__PROP_TYPE_STRING -#undef DUK__PROP_TYPE_UNDEFINED -#line 1 "duk_hthread_misc.c" -/* - * Thread support. - */ - -/* #include duk_internal.h -> already included */ - -DUK_INTERNAL void duk_hthread_terminate(duk_hthread *thr) { - DUK_ASSERT(thr != NULL); - - while (thr->callstack_curr != NULL) { - duk_hthread_activation_unwind_norz(thr); - } - - thr->valstack_bottom = thr->valstack; - duk_set_top(thr, 0); /* unwinds valstack, updating refcounts */ - - thr->state = DUK_HTHREAD_STATE_TERMINATED; - - /* Here we could remove references to built-ins, but it may not be - * worth the effort because built-ins are quite likely to be shared - * with another (unterminated) thread, and terminated threads are also - * usually garbage collected quite quickly. - * - * We could also shrink the value stack here, but that also may not - * be worth the effort for the same reason. - */ - - DUK_REFZERO_CHECK_SLOW(thr); -} - -#if defined(DUK_USE_DEBUGGER_SUPPORT) -DUK_INTERNAL duk_uint_fast32_t duk_hthread_get_act_curr_pc(duk_hthread *thr, duk_activation *act) { - duk_instr_t *bcode; - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(act != NULL); - DUK_UNREF(thr); - - /* XXX: store 'bcode' pointer to activation for faster lookup? */ - if (act->func && DUK_HOBJECT_IS_COMPFUNC(act->func)) { - bcode = DUK_HCOMPFUNC_GET_CODE_BASE(thr->heap, (duk_hcompfunc *) (act->func)); - return (duk_uint_fast32_t) (act->curr_pc - bcode); - } - return 0; -} -#endif /* DUK_USE_DEBUGGER_SUPPORT */ - -DUK_INTERNAL duk_uint_fast32_t duk_hthread_get_act_prev_pc(duk_hthread *thr, duk_activation *act) { - duk_instr_t *bcode; - duk_uint_fast32_t ret; - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(act != NULL); - DUK_UNREF(thr); - - if (act->func && DUK_HOBJECT_IS_COMPFUNC(act->func)) { - bcode = DUK_HCOMPFUNC_GET_CODE_BASE(thr->heap, (duk_hcompfunc *) (act->func)); - ret = (duk_uint_fast32_t) (act->curr_pc - bcode); - if (ret > 0) { - ret--; - } - return ret; - } - return 0; -} - -/* Write bytecode executor's curr_pc back to topmost activation (if any). */ -DUK_INTERNAL void duk_hthread_sync_currpc(duk_hthread *thr) { - duk_activation *act; - - DUK_ASSERT(thr != NULL); - - if (thr->ptr_curr_pc != NULL) { - /* ptr_curr_pc != NULL only when bytecode executor is active. */ - DUK_ASSERT(thr->callstack_top > 0); - DUK_ASSERT(thr->callstack_curr != NULL); - act = thr->callstack_curr; - DUK_ASSERT(act != NULL); - act->curr_pc = *thr->ptr_curr_pc; - } -} - -DUK_INTERNAL void duk_hthread_sync_and_null_currpc(duk_hthread *thr) { - duk_activation *act; - - DUK_ASSERT(thr != NULL); - - if (thr->ptr_curr_pc != NULL) { - /* ptr_curr_pc != NULL only when bytecode executor is active. */ - DUK_ASSERT(thr->callstack_top > 0); - DUK_ASSERT(thr->callstack_curr != NULL); - act = thr->callstack_curr; - DUK_ASSERT(act != NULL); - act->curr_pc = *thr->ptr_curr_pc; - thr->ptr_curr_pc = NULL; - } -} -#line 1 "duk_hthread_stacks.c" -/* - * Thread stack (mainly call stack) primitives: allocation of activations, - * unwinding catchers and activations, etc. - * - * Value stack handling is a part of the API implementation. - */ - -/* #include duk_internal.h -> already included */ - -/* Unwind the topmost catcher of the current activation (caller must check that - * both exist) without side effects. - */ -DUK_INTERNAL void duk_hthread_catcher_unwind_norz(duk_hthread *thr, duk_activation *act) { - duk_catcher *cat; - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(act != NULL); - DUK_ASSERT(act->cat != NULL); /* caller must check */ - cat = act->cat; - DUK_ASSERT(cat != NULL); - - DUK_DDD(DUK_DDDPRINT("unwinding catch stack entry %p (lexenv check is done)", (void *) cat)); - - if (DUK_CAT_HAS_LEXENV_ACTIVE(cat)) { - duk_hobject *env; - - env = act->lex_env; /* current lex_env of the activation (created for catcher) */ - DUK_ASSERT(env != NULL); /* must be, since env was created when catcher was created */ - act->lex_env = DUK_HOBJECT_GET_PROTOTYPE(thr->heap, env); /* prototype is lex_env before catcher created */ - DUK_HOBJECT_INCREF(thr, act->lex_env); - DUK_HOBJECT_DECREF_NORZ(thr, env); - - /* There is no need to decref anything else than 'env': if 'env' - * becomes unreachable, refzero will handle decref'ing its prototype. - */ - } - - act->cat = cat->parent; - duk_hthread_catcher_free(thr, cat); -} - -/* Same as above, but caller is certain no catcher-related lexenv may exist. */ -DUK_INTERNAL void duk_hthread_catcher_unwind_nolexenv_norz(duk_hthread *thr, duk_activation *act) { - duk_catcher *cat; - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(act != NULL); - DUK_ASSERT(act->cat != NULL); /* caller must check */ - cat = act->cat; - DUK_ASSERT(cat != NULL); - - DUK_DDD(DUK_DDDPRINT("unwinding catch stack entry %p (lexenv check is not done)", (void *) cat)); - - DUK_ASSERT(!DUK_CAT_HAS_LEXENV_ACTIVE(cat)); - - act->cat = cat->parent; - duk_hthread_catcher_free(thr, cat); -} - -DUK_LOCAL -#if defined(DUK_USE_CACHE_CATCHER) -DUK_NOINLINE -#endif -duk_catcher *duk__hthread_catcher_alloc_slow(duk_hthread *thr) { - duk_catcher *cat; - - cat = (duk_catcher *) DUK_ALLOC_CHECKED(thr, sizeof(duk_catcher)); - DUK_ASSERT(cat != NULL); - return cat; -} - -#if defined(DUK_USE_CACHE_CATCHER) -DUK_INTERNAL DUK_INLINE duk_catcher *duk_hthread_catcher_alloc(duk_hthread *thr) { - duk_catcher *cat; - - DUK_ASSERT(thr != NULL); - - cat = thr->heap->catcher_free; - if (DUK_LIKELY(cat != NULL)) { - thr->heap->catcher_free = cat->parent; - return cat; - } - - return duk__hthread_catcher_alloc_slow(thr); -} -#else /* DUK_USE_CACHE_CATCHER */ -DUK_INTERNAL duk_catcher *duk_hthread_catcher_alloc(duk_hthread *thr) { - return duk__hthread_catcher_alloc_slow(thr); -} -#endif /* DUK_USE_CACHE_CATCHER */ - -DUK_INTERNAL void duk_hthread_catcher_free(duk_hthread *thr, duk_catcher *cat) { - DUK_ASSERT(thr != NULL); - DUK_ASSERT(cat != NULL); - -#if defined(DUK_USE_CACHE_CATCHER) - /* Unconditional caching for now; freed in mark-and-sweep. */ - cat->parent = thr->heap->catcher_free; - thr->heap->catcher_free = cat; -#else - DUK_FREE_CHECKED(thr, (void *) cat); -#endif -} - -DUK_LOCAL -#if defined(DUK_USE_CACHE_ACTIVATION) -DUK_NOINLINE -#endif -duk_activation *duk__hthread_activation_alloc_slow(duk_hthread *thr) { - duk_activation *act; - - act = (duk_activation *) DUK_ALLOC_CHECKED(thr, sizeof(duk_activation)); - DUK_ASSERT(act != NULL); - return act; -} - -#if defined(DUK_USE_CACHE_ACTIVATION) -DUK_INTERNAL DUK_INLINE duk_activation *duk_hthread_activation_alloc(duk_hthread *thr) { - duk_activation *act; - - DUK_ASSERT(thr != NULL); - - act = thr->heap->activation_free; - if (DUK_LIKELY(act != NULL)) { - thr->heap->activation_free = act->parent; - return act; - } - - return duk__hthread_activation_alloc_slow(thr); -} -#else /* DUK_USE_CACHE_ACTIVATION */ -DUK_INTERNAL duk_activation *duk_hthread_activation_alloc(duk_hthread *thr) { - return duk__hthread_activation_alloc_slow(thr); -} -#endif /* DUK_USE_CACHE_ACTIVATION */ - -DUK_INTERNAL void duk_hthread_activation_free(duk_hthread *thr, duk_activation *act) { - DUK_ASSERT(thr != NULL); - DUK_ASSERT(act != NULL); - -#if defined(DUK_USE_CACHE_ACTIVATION) - /* Unconditional caching for now; freed in mark-and-sweep. */ - act->parent = thr->heap->activation_free; - thr->heap->activation_free = act; -#else - DUK_FREE_CHECKED(thr, (void *) act); -#endif -} - -/* Internal helper: process the unwind for the topmost activation of a thread, - * but leave the duk_activation in place for possible tailcall reuse. - */ -DUK_LOCAL void duk__activation_unwind_nofree_norz(duk_hthread *thr) { -#if defined(DUK_USE_DEBUGGER_SUPPORT) - duk_heap *heap; -#endif - duk_activation *act; - duk_hobject *func; - duk_hobject *tmp; - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(thr->callstack_curr != NULL); /* caller must check */ - DUK_ASSERT(thr->callstack_top > 0); - act = thr->callstack_curr; - DUK_ASSERT(act != NULL); - /* With lightfuncs, act 'func' may be NULL. */ - - /* With duk_activation records allocated separately, 'act' is a stable - * pointer and not affected by side effects. - */ - -#if defined(DUK_USE_NONSTD_FUNC_CALLER_PROPERTY) - /* - * Restore 'caller' property for non-strict callee functions. - */ - - func = DUK_ACT_GET_FUNC(act); - if (func != NULL && !DUK_HOBJECT_HAS_STRICT(func)) { - duk_tval *tv_caller; - duk_tval tv_tmp; - duk_hobject *h_tmp; - - tv_caller = duk_hobject_find_entry_tval_ptr_stridx(thr->heap, func, DUK_STRIDX_CALLER); - - /* The act->prev_caller should only be set if the entry for 'caller' - * exists (as it is only set in that case, and the property is not - * configurable), but handle all the cases anyway. - */ - - if (tv_caller) { - DUK_TVAL_SET_TVAL(&tv_tmp, tv_caller); - if (act->prev_caller) { - /* Just transfer the refcount from act->prev_caller to tv_caller, - * so no need for a refcount update. This is the expected case. - */ - DUK_TVAL_SET_OBJECT(tv_caller, act->prev_caller); - act->prev_caller = NULL; - } else { - DUK_TVAL_SET_NULL(tv_caller); /* no incref needed */ - DUK_ASSERT(act->prev_caller == NULL); - } - DUK_TVAL_DECREF_NORZ(thr, &tv_tmp); - } else { - h_tmp = act->prev_caller; - if (h_tmp) { - act->prev_caller = NULL; - DUK_HOBJECT_DECREF_NORZ(thr, h_tmp); - } - } - DUK_ASSERT(act->prev_caller == NULL); - } -#endif - - /* - * Unwind debugger state. If we unwind while stepping - * (for any step type), pause execution. This is the - * only place explicitly handling a step out. - */ - -#if defined(DUK_USE_DEBUGGER_SUPPORT) - heap = thr->heap; - if (heap->dbg_pause_act == thr->callstack_curr) { - if (heap->dbg_pause_flags & DUK_PAUSE_FLAG_FUNC_EXIT) { - DUK_D(DUK_DPRINT("PAUSE TRIGGERED by function exit")); - duk_debug_set_paused(heap); - } else { - DUK_D(DUK_DPRINT("unwound past dbg_pause_act, set to NULL")); - heap->dbg_pause_act = NULL; /* avoid stale pointers */ - } - DUK_ASSERT(heap->dbg_pause_act == NULL); - } -#endif - - /* - * Unwind catchers. - * - * Since there are no references in the catcher structure, - * unwinding is quite simple. The only thing we need to - * look out for is popping a possible lexical environment - * established for an active catch clause. - */ - - while (act->cat != NULL) { - duk_hthread_catcher_unwind_norz(thr, act); - } - - /* - * Close environment record(s) if they exist. - * - * Only variable environments are closed. If lex_env != var_env, it - * cannot currently contain any register bound declarations. - * - * Only environments created for a NEWENV function are closed. If an - * environment is created for e.g. an eval call, it must not be closed. - */ - - func = DUK_ACT_GET_FUNC(act); - if (func != NULL && !DUK_HOBJECT_HAS_NEWENV(func)) { - DUK_DDD(DUK_DDDPRINT("skip closing environments, envs not owned by this activation")); - goto skip_env_close; - } - /* func is NULL for lightfunc */ - - /* Catch sites are required to clean up their environments - * in FINALLY part before propagating, so this should - * always hold here. - */ - DUK_ASSERT(act->lex_env == act->var_env); - - /* XXX: Closing the environment record copies values from registers - * into the scope object. It's side effect free as such, but may - * currently run out of memory which causes an error throw. This is - * an actual sandboxing problem for error unwinds, and needs to be - * fixed e.g. by preallocating the scope property slots. - */ - if (act->var_env != NULL) { - DUK_DDD(DUK_DDDPRINT("closing var_env record %p -> %!O", (void *) act->var_env, (duk_heaphdr *) act->var_env)); - duk_js_close_environment_record(thr, act->var_env); - } - -skip_env_close: - - /* - * Update preventcount - */ - - if (act->flags & DUK_ACT_FLAG_PREVENT_YIELD) { - DUK_ASSERT(thr->callstack_preventcount >= 1); - thr->callstack_preventcount--; - } - - /* - * Reference count updates, using NORZ macros so we don't - * need to handle side effects. - * - * duk_activation pointers like act->var_env are intentionally - * left as garbage and not NULLed. Without side effects they - * can't be used when the values are dangling/garbage. - */ - - DUK_HOBJECT_DECREF_NORZ_ALLOWNULL(thr, act->var_env); - DUK_HOBJECT_DECREF_NORZ_ALLOWNULL(thr, act->lex_env); - tmp = DUK_ACT_GET_FUNC(act); - DUK_HOBJECT_DECREF_NORZ_ALLOWNULL(thr, tmp); - DUK_UNREF(tmp); -} - -/* Unwind topmost duk_activation of a thread, caller must ensure that an - * activation exists. The call is side effect free, except that scope - * closure may currently throw an out-of-memory error. - */ -DUK_INTERNAL void duk_hthread_activation_unwind_norz(duk_hthread *thr) { - duk_activation *act; - - duk__activation_unwind_nofree_norz(thr); - - DUK_ASSERT(thr->callstack_curr != NULL); - DUK_ASSERT(thr->callstack_top > 0); - act = thr->callstack_curr; - thr->callstack_curr = act->parent; - thr->callstack_top--; - - /* Ideally we'd restore value stack reserve here to caller's value. - * This doesn't work for current unwind call sites however, because - * the current (unwound) value stack top may be above the reserve. - * Thus value stack reserve is restored by the call sites. - */ - - /* XXX: inline for performance builds? */ - duk_hthread_activation_free(thr, act); - - /* We could clear the book-keeping variables like retval_byteoff for - * the topmost activation, but don't do so now as it's not necessary. - */ -} - -DUK_INTERNAL void duk_hthread_activation_unwind_reuse_norz(duk_hthread *thr) { - duk__activation_unwind_nofree_norz(thr); -} - -/* Get duk_activation for given callstack level or NULL if level is invalid - * or deeper than the call stack. Level -1 refers to current activation, -2 - * to its caller, etc. Starting from Duktape 2.2 finding the activation is - * a linked list scan which gets more expensive the deeper the lookup is. - */ -DUK_INTERNAL duk_activation *duk_hthread_get_activation_for_level(duk_hthread *thr, duk_int_t level) { - duk_activation *act; - - if (level >= 0) { - return NULL; - } - act = thr->callstack_curr; - for (;;) { - if (act == NULL) { - return act; - } - if (level == -1) { - return act; - } - level++; - act = act->parent; - } - /* never here */ -} - -#if defined(DUK_USE_FINALIZER_TORTURE) -DUK_INTERNAL void duk_hthread_valstack_torture_realloc(duk_hthread *thr) { - duk_size_t alloc_size; - duk_tval *new_ptr; - duk_ptrdiff_t alloc_end_off; - duk_ptrdiff_t end_off; - duk_ptrdiff_t bottom_off; - duk_ptrdiff_t top_off; - - if (thr->valstack == NULL) { - DUK_D(DUK_DPRINT("skip valstack torture realloc, valstack is NULL")); - return; - } - - alloc_end_off = (duk_ptrdiff_t) ((duk_uint8_t *) thr->valstack_alloc_end - (duk_uint8_t *) thr->valstack); - end_off = (duk_ptrdiff_t) ((duk_uint8_t *) thr->valstack_end - (duk_uint8_t *) thr->valstack); - bottom_off = (duk_ptrdiff_t) ((duk_uint8_t *) thr->valstack_bottom - (duk_uint8_t *) thr->valstack); - top_off = (duk_ptrdiff_t) ((duk_uint8_t *) thr->valstack_top - (duk_uint8_t *) thr->valstack); - alloc_size = (duk_size_t) alloc_end_off; - if (alloc_size == 0) { - DUK_D(DUK_DPRINT("skip valstack torture realloc, alloc_size is zero")); - return; - } - - /* Use DUK_ALLOC_RAW() to avoid side effects. */ - new_ptr = (duk_tval *) DUK_ALLOC_RAW(thr->heap, alloc_size); - if (new_ptr != NULL) { - duk_memcpy((void *) new_ptr, (const void *) thr->valstack, alloc_size); - duk_memset((void *) thr->valstack, 0x55, alloc_size); - DUK_FREE_CHECKED(thr, (void *) thr->valstack); - thr->valstack = new_ptr; - thr->valstack_alloc_end = (duk_tval *) ((duk_uint8_t *) new_ptr + alloc_end_off); - thr->valstack_end = (duk_tval *) ((duk_uint8_t *) new_ptr + end_off); - thr->valstack_bottom = (duk_tval *) ((duk_uint8_t *) new_ptr + bottom_off); - thr->valstack_top = (duk_tval *) ((duk_uint8_t *) new_ptr + top_off); - } else { - DUK_D(DUK_DPRINT("failed to realloc valstack for torture, ignore")); - } -} -#endif /* DUK_USE_FINALIZER_TORTURE */ -#line 1 "duk_js_arith.c" -/* - * Shared helpers for arithmetic operations - */ - -/* #include duk_internal.h -> already included */ - -/* ECMAScript modulus ('%') does not match IEEE 754 "remainder" operation - * (implemented by remainder() in C99) but does seem to match ANSI C fmod(). - * Compare E5 Section 11.5.3 and "man fmod". - */ -DUK_INTERNAL double duk_js_arith_mod(double d1, double d2) { -#if defined(DUK_USE_POW_WORKAROUNDS) - /* Specific fixes to common fmod() implementation issues: - * - test-bug-mingw-math-issues.js - */ - if (DUK_ISINF(d2)) { - if (DUK_ISINF(d1)) { - return DUK_DOUBLE_NAN; - } else { - return d1; - } - } else if (duk_double_equals(d1, 0.0)) { - /* d1 +/-0 is returned as is (preserving sign) except when - * d2 is zero or NaN. - */ - if (duk_double_equals(d2, 0.0) || DUK_ISNAN(d2)) { - return DUK_DOUBLE_NAN; - } else { - return d1; - } - } -#else - /* Some ISO C assumptions. */ - DUK_ASSERT(duk_double_equals(DUK_FMOD(1.0, DUK_DOUBLE_INFINITY), 1.0)); - DUK_ASSERT(duk_double_equals(DUK_FMOD(-1.0, DUK_DOUBLE_INFINITY), -1.0)); - DUK_ASSERT(duk_double_equals(DUK_FMOD(1.0, -DUK_DOUBLE_INFINITY), 1.0)); - DUK_ASSERT(duk_double_equals(DUK_FMOD(-1.0, -DUK_DOUBLE_INFINITY), -1.0)); - DUK_ASSERT(DUK_ISNAN(DUK_FMOD(DUK_DOUBLE_INFINITY, DUK_DOUBLE_INFINITY))); - DUK_ASSERT(DUK_ISNAN(DUK_FMOD(DUK_DOUBLE_INFINITY, -DUK_DOUBLE_INFINITY))); - DUK_ASSERT(DUK_ISNAN(DUK_FMOD(-DUK_DOUBLE_INFINITY, DUK_DOUBLE_INFINITY))); - DUK_ASSERT(DUK_ISNAN(DUK_FMOD(-DUK_DOUBLE_INFINITY, -DUK_DOUBLE_INFINITY))); - DUK_ASSERT(duk_double_equals(DUK_FMOD(0.0, 1.0), 0.0) && DUK_SIGNBIT(DUK_FMOD(0.0, 1.0)) == 0); - DUK_ASSERT(duk_double_equals(DUK_FMOD(-0.0, 1.0), 0.0) && DUK_SIGNBIT(DUK_FMOD(-0.0, 1.0)) != 0); - DUK_ASSERT(duk_double_equals(DUK_FMOD(0.0, DUK_DOUBLE_INFINITY), 0.0) && - DUK_SIGNBIT(DUK_FMOD(0.0, DUK_DOUBLE_INFINITY)) == 0); - DUK_ASSERT(duk_double_equals(DUK_FMOD(-0.0, DUK_DOUBLE_INFINITY), 0.0) && - DUK_SIGNBIT(DUK_FMOD(-0.0, DUK_DOUBLE_INFINITY)) != 0); - DUK_ASSERT(duk_double_equals(DUK_FMOD(0.0, -DUK_DOUBLE_INFINITY), 0.0) && - DUK_SIGNBIT(DUK_FMOD(0.0, DUK_DOUBLE_INFINITY)) == 0); - DUK_ASSERT(duk_double_equals(DUK_FMOD(-0.0, -DUK_DOUBLE_INFINITY), 0.0) && - DUK_SIGNBIT(DUK_FMOD(-0.0, -DUK_DOUBLE_INFINITY)) != 0); - DUK_ASSERT(DUK_ISNAN(DUK_FMOD(0.0, 0.0))); - DUK_ASSERT(DUK_ISNAN(DUK_FMOD(-0.0, 0.0))); - DUK_ASSERT(DUK_ISNAN(DUK_FMOD(0.0, -0.0))); - DUK_ASSERT(DUK_ISNAN(DUK_FMOD(-0.0, -0.0))); - DUK_ASSERT(DUK_ISNAN(DUK_FMOD(0.0, DUK_DOUBLE_NAN))); - DUK_ASSERT(DUK_ISNAN(DUK_FMOD(-0.0, DUK_DOUBLE_NAN))); -#endif - - return (duk_double_t) DUK_FMOD((double) d1, (double) d2); -} - -/* Shared helper for Math.pow() and exponentiation operator. */ -DUK_INTERNAL double duk_js_arith_pow(double x, double y) { - /* The ANSI C pow() semantics differ from ECMAScript. - * - * E.g. when x==1 and y is +/- infinite, the ECMAScript required - * result is NaN, while at least Linux pow() returns 1. - */ - - duk_small_int_t cx, cy, sx; - - DUK_UNREF(cx); - DUK_UNREF(sx); - cy = (duk_small_int_t) DUK_FPCLASSIFY(y); - - if (cy == DUK_FP_NAN) { - goto ret_nan; - } - if (duk_double_equals(DUK_FABS(x), 1.0) && cy == DUK_FP_INFINITE) { - goto ret_nan; - } - -#if defined(DUK_USE_POW_WORKAROUNDS) - /* Specific fixes to common pow() implementation issues: - * - test-bug-netbsd-math-pow.js: NetBSD 6.0 on x86 (at least) - * - test-bug-mingw-math-issues.js - */ - cx = (duk_small_int_t) DUK_FPCLASSIFY(x); - if (cx == DUK_FP_ZERO && y < 0.0) { - sx = (duk_small_int_t) DUK_SIGNBIT(x); - if (sx == 0) { - /* Math.pow(+0,y) should be Infinity when y<0. NetBSD pow() - * returns -Infinity instead when y is <0 and finite. The - * if-clause also catches y == -Infinity (which works even - * without the fix). - */ - return DUK_DOUBLE_INFINITY; - } else { - /* Math.pow(-0,y) where y<0 should be: - * - -Infinity if y<0 and an odd integer - * - Infinity if y<0 but not an odd integer - * NetBSD pow() returns -Infinity for all finite y<0. The - * if-clause also catches y == -Infinity (which works even - * without the fix). - */ - - /* fmod() return value has same sign as input (negative) so - * the result here will be in the range ]-2,0], -1 indicates - * odd. If x is -Infinity, NaN is returned and the odd check - * always concludes "not odd" which results in desired outcome. - */ - double tmp = DUK_FMOD(y, 2); - if (tmp == -1.0) { - return -DUK_DOUBLE_INFINITY; - } else { - /* Not odd, or y == -Infinity */ - return DUK_DOUBLE_INFINITY; - } - } - } else if (cx == DUK_FP_NAN) { - if (duk_double_equals(y, 0.0)) { - /* NaN ** +/- 0 should always be 1, but is NaN on - * at least some Cygwin/MinGW versions. - */ - return 1.0; - } - } -#else - /* Some ISO C assumptions. */ - DUK_ASSERT(duk_double_equals(DUK_POW(DUK_DOUBLE_NAN, 0.0), 1.0)); - DUK_ASSERT(DUK_ISINF(DUK_POW(0.0, -1.0)) && DUK_SIGNBIT(DUK_POW(0.0, -1.0)) == 0); - DUK_ASSERT(DUK_ISINF(DUK_POW(-0.0, -2.0)) && DUK_SIGNBIT(DUK_POW(-0.0, -2.0)) == 0); - DUK_ASSERT(DUK_ISINF(DUK_POW(-0.0, -3.0)) && DUK_SIGNBIT(DUK_POW(-0.0, -3.0)) != 0); -#endif - - return DUK_POW(x, y); - -ret_nan: - return DUK_DOUBLE_NAN; -} -#line 1 "duk_js_call.c" -/* - * Call handling. - * - * duk_handle_call_unprotected(): - * - * - Unprotected call to ECMAScript or Duktape/C function, from native - * code or bytecode executor. - * - * - Also handles Ecma-to-Ecma calls which reuses a currently running - * executor instance to avoid native recursion. Call setup is done - * normally, but just before calling the bytecode executor a special - * return code is used to indicate that a calling executor is reused. - * - * - Also handles tailcalls, i.e. reuse of current duk_activation. - * - * - Also handles setup for initial Duktape.Thread.resume(). - * - * duk_handle_safe_call(): - * - * - Protected C call within current activation. - * - * setjmp() and local variables have a nasty interaction, see execution.rst; - * non-volatile locals modified after setjmp() call are not guaranteed to - * keep their value and can cause compiler or compiler version specific - * difficult to replicate issues. - * - * See 'execution.rst'. - */ - -/* #include duk_internal.h -> already included */ - -/* XXX: heap->error_not_allowed for success path too? */ - -/* - * Limit check helpers. - */ - -/* Check native stack space if DUK_USE_NATIVE_STACK_CHECK() defined. */ -DUK_INTERNAL void duk_native_stack_check(duk_hthread *thr) { -#if defined(DUK_USE_NATIVE_STACK_CHECK) - if (DUK_USE_NATIVE_STACK_CHECK() != 0) { - DUK_ERROR_RANGE(thr, DUK_STR_NATIVE_STACK_LIMIT); - } -#else - DUK_UNREF(thr); -#endif -} - -/* Allow headroom for calls during error augmentation (see GH-191). - * We allow space for 10 additional recursions, with one extra - * for, e.g. a print() call at the deepest level, and an extra - * +1 for protected call wrapping. - */ -#define DUK__AUGMENT_CALL_RELAX_COUNT (10 + 2) - -/* Stack space required by call handling entry. */ -#define DUK__CALL_HANDLING_REQUIRE_STACK 8 - -DUK_LOCAL DUK_NOINLINE void duk__call_c_recursion_limit_check_slowpath(duk_hthread *thr) { - /* When augmenting an error, the effective limit is a bit higher. - * Check for it only if the fast path check fails. - */ -#if defined(DUK_USE_AUGMENT_ERROR_THROW) || defined(DUK_USE_AUGMENT_ERROR_CREATE) - if (thr->heap->augmenting_error) { - if (thr->heap->call_recursion_depth < thr->heap->call_recursion_limit + DUK__AUGMENT_CALL_RELAX_COUNT) { - DUK_D(DUK_DPRINT("C recursion limit reached but augmenting error and within relaxed limit")); - return; - } - } -#endif - - DUK_D(DUK_DPRINT("call prevented because C recursion limit reached")); - DUK_ERROR_RANGE(thr, DUK_STR_NATIVE_STACK_LIMIT); - DUK_WO_NORETURN(return;); -} - -DUK_LOCAL DUK_ALWAYS_INLINE void duk__call_c_recursion_limit_check(duk_hthread *thr) { - DUK_ASSERT(thr->heap->call_recursion_depth >= 0); - DUK_ASSERT(thr->heap->call_recursion_depth <= thr->heap->call_recursion_limit); - - duk_native_stack_check(thr); - - /* This check is forcibly inlined because it's very cheap and almost - * always passes. The slow path is forcibly noinline. - */ - if (DUK_LIKELY(thr->heap->call_recursion_depth < thr->heap->call_recursion_limit)) { - return; - } - - duk__call_c_recursion_limit_check_slowpath(thr); -} - -DUK_LOCAL DUK_NOINLINE void duk__call_callstack_limit_check_slowpath(duk_hthread *thr) { - /* When augmenting an error, the effective limit is a bit higher. - * Check for it only if the fast path check fails. - */ -#if defined(DUK_USE_AUGMENT_ERROR_THROW) || defined(DUK_USE_AUGMENT_ERROR_CREATE) - if (thr->heap->augmenting_error) { - if (thr->callstack_top < DUK_USE_CALLSTACK_LIMIT + DUK__AUGMENT_CALL_RELAX_COUNT) { - DUK_D(DUK_DPRINT("call stack limit reached but augmenting error and within relaxed limit")); - return; - } - } -#endif - - /* XXX: error message is a bit misleading: we reached a recursion - * limit which is also essentially the same as a C callstack limit - * (except perhaps with some relaxed threading assumptions). - */ - DUK_D(DUK_DPRINT("call prevented because call stack limit reached")); - DUK_ERROR_RANGE(thr, DUK_STR_CALLSTACK_LIMIT); - DUK_WO_NORETURN(return;); -} - -DUK_LOCAL DUK_ALWAYS_INLINE void duk__call_callstack_limit_check(duk_hthread *thr) { - /* This check is forcibly inlined because it's very cheap and almost - * always passes. The slow path is forcibly noinline. - */ - if (DUK_LIKELY(thr->callstack_top < DUK_USE_CALLSTACK_LIMIT)) { - return; - } - - duk__call_callstack_limit_check_slowpath(thr); -} - -/* - * Interrupt counter fixup (for development only). - */ - -#if defined(DUK_USE_INTERRUPT_COUNTER) && defined(DUK_USE_DEBUG) -DUK_LOCAL void duk__interrupt_fixup(duk_hthread *thr, duk_hthread *entry_curr_thread) { - /* Currently the bytecode executor and executor interrupt - * instruction counts are off because we don't execute the - * interrupt handler when we're about to exit from the initial - * user call into Duktape. - * - * If we were to execute the interrupt handler here, the counts - * would match. You can enable this block manually to check - * that this is the case. - */ - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(thr->heap != NULL); - -#if defined(DUK_USE_INTERRUPT_DEBUG_FIXUP) - if (entry_curr_thread == NULL) { - thr->interrupt_init = thr->interrupt_init - thr->interrupt_counter; - thr->heap->inst_count_interrupt += thr->interrupt_init; - DUK_DD(DUK_DDPRINT("debug test: updated interrupt count on exit to " - "user code, instruction counts: executor=%ld, interrupt=%ld", - (long) thr->heap->inst_count_exec, - (long) thr->heap->inst_count_interrupt)); - DUK_ASSERT(thr->heap->inst_count_exec == thr->heap->inst_count_interrupt); - } -#else - DUK_UNREF(thr); - DUK_UNREF(entry_curr_thread); -#endif -} -#endif - -/* - * Arguments object creation. - * - * Creating arguments objects involves many small details, see E5 Section - * 10.6 for the specific requirements. Much of the arguments object exotic - * behavior is implemented in duk_hobject_props.c, and is enabled by the - * object flag DUK_HOBJECT_FLAG_EXOTIC_ARGUMENTS. - */ - -DUK_LOCAL void duk__create_arguments_object(duk_hthread *thr, duk_hobject *func, duk_hobject *varenv, duk_idx_t idx_args) { - duk_hobject *arg; /* 'arguments' */ - duk_hobject *formals; /* formals for 'func' (may be NULL if func is a C function) */ - duk_idx_t i_arg; - duk_idx_t i_map; - duk_idx_t i_mappednames; - duk_idx_t i_formals; - duk_idx_t i_argbase; - duk_idx_t n_formals; - duk_idx_t idx; - duk_idx_t num_stack_args; - duk_bool_t need_map; - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(func != NULL); - DUK_ASSERT(DUK_HOBJECT_IS_NONBOUND_FUNCTION(func)); - DUK_ASSERT(varenv != NULL); - - /* [ ... func this arg1(@idx_args) ... argN envobj ] - * [ arg1(@idx_args) ... argN envobj ] (for tailcalls) - */ - - need_map = 0; - - i_argbase = idx_args; - num_stack_args = duk_get_top(thr) - i_argbase - 1; - DUK_ASSERT(i_argbase >= 0); - DUK_ASSERT(num_stack_args >= 0); - - formals = (duk_hobject *) duk_hobject_get_formals(thr, (duk_hobject *) func); - if (formals) { - n_formals = (duk_idx_t) ((duk_harray *) formals)->length; - duk_push_hobject(thr, formals); - } else { - /* This shouldn't happen without tampering of internal - * properties: if a function accesses 'arguments', _Formals - * is kept. Check for the case anyway in case internal - * properties have been modified manually. - */ - DUK_D(DUK_DPRINT("_Formals is undefined when creating arguments, use n_formals == 0")); - n_formals = 0; - duk_push_undefined(thr); - } - i_formals = duk_require_top_index(thr); - - DUK_ASSERT(n_formals >= 0); - DUK_ASSERT(formals != NULL || n_formals == 0); - - DUK_DDD( - DUK_DDDPRINT("func=%!O, formals=%!O, n_formals=%ld", (duk_heaphdr *) func, (duk_heaphdr *) formals, (long) n_formals)); - - /* [ ... formals ] */ - - /* - * Create required objects: - * - 'arguments' object: array-like, but not an array - * - 'map' object: internal object, tied to 'arguments' (bare) - * - 'mappedNames' object: temporary value used during construction (bare) - */ - - arg = duk_push_object_helper(thr, - DUK_HOBJECT_FLAG_EXTENSIBLE | DUK_HOBJECT_FLAG_FASTREFS | DUK_HOBJECT_FLAG_ARRAY_PART | - DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_ARGUMENTS), - DUK_BIDX_OBJECT_PROTOTYPE); - DUK_ASSERT(arg != NULL); - (void) duk_push_object_helper(thr, - DUK_HOBJECT_FLAG_EXTENSIBLE | DUK_HOBJECT_FLAG_FASTREFS | - DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_OBJECT), - -1); /* no prototype */ - (void) duk_push_object_helper(thr, - DUK_HOBJECT_FLAG_EXTENSIBLE | DUK_HOBJECT_FLAG_FASTREFS | - DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_OBJECT), - -1); /* no prototype */ - i_arg = duk_get_top(thr) - 3; - i_map = i_arg + 1; - i_mappednames = i_arg + 2; - DUK_ASSERT(!duk_is_bare_object(thr, -3)); /* arguments */ - DUK_ASSERT(duk_is_bare_object(thr, -2)); /* map */ - DUK_ASSERT(duk_is_bare_object(thr, -1)); /* mappedNames */ - - /* [ ... formals arguments map mappedNames ] */ - - DUK_DDD(DUK_DDDPRINT("created arguments related objects: " - "arguments at index %ld -> %!O " - "map at index %ld -> %!O " - "mappednames at index %ld -> %!O", - (long) i_arg, - (duk_heaphdr *) duk_get_hobject(thr, i_arg), - (long) i_map, - (duk_heaphdr *) duk_get_hobject(thr, i_map), - (long) i_mappednames, - (duk_heaphdr *) duk_get_hobject(thr, i_mappednames))); - - /* - * Init arguments properties, map, etc. - */ - - duk_push_int(thr, num_stack_args); - duk_xdef_prop_stridx(thr, i_arg, DUK_STRIDX_LENGTH, DUK_PROPDESC_FLAGS_WC); - - /* - * Init argument related properties. - */ - - /* step 11 */ - idx = num_stack_args - 1; - while (idx >= 0) { - DUK_DDD( - DUK_DDDPRINT("arg idx %ld, argbase=%ld, argidx=%ld", (long) idx, (long) i_argbase, (long) (i_argbase + idx))); - - DUK_DDD(DUK_DDDPRINT("define arguments[%ld]=arg", (long) idx)); - duk_dup(thr, i_argbase + idx); - duk_xdef_prop_index_wec(thr, i_arg, (duk_uarridx_t) idx); - DUK_DDD(DUK_DDDPRINT("defined arguments[%ld]=arg", (long) idx)); - - /* step 11.c is relevant only if non-strict (checked in 11.c.ii) */ - if (!DUK_HOBJECT_HAS_STRICT(func) && idx < n_formals) { - DUK_ASSERT(formals != NULL); - - DUK_DDD(DUK_DDDPRINT("strict function, index within formals (%ld < %ld)", (long) idx, (long) n_formals)); - - duk_get_prop_index(thr, i_formals, (duk_uarridx_t) idx); - DUK_ASSERT(duk_is_string(thr, -1)); - - duk_dup_top(thr); /* [ ... name name ] */ - - if (!duk_has_prop(thr, i_mappednames)) { - /* steps 11.c.ii.1 - 11.c.ii.4, but our internal book-keeping - * differs from the reference model - */ - - /* [ ... name ] */ - - need_map = 1; - - DUK_DDD( - DUK_DDDPRINT("set mappednames[%s]=%ld", (const char *) duk_get_string(thr, -1), (long) idx)); - duk_dup_top(thr); /* name */ - (void) duk_push_uint_to_hstring(thr, (duk_uint_t) idx); /* index */ - duk_xdef_prop_wec(thr, i_mappednames); /* out of spec, must be configurable */ - - DUK_DDD(DUK_DDDPRINT("set map[%ld]=%s", (long) idx, duk_get_string(thr, -1))); - duk_dup_top(thr); /* name */ - duk_xdef_prop_index_wec(thr, i_map, (duk_uarridx_t) idx); /* out of spec, must be configurable */ - } else { - /* duk_has_prop() popped the second 'name' */ - } - - /* [ ... name ] */ - duk_pop(thr); /* pop 'name' */ - } - - idx--; - } - - DUK_DDD(DUK_DDDPRINT("actual arguments processed")); - - /* step 12 */ - if (need_map) { - DUK_DDD(DUK_DDDPRINT("adding 'map' and 'varenv' to arguments object")); - - /* should never happen for a strict callee */ - DUK_ASSERT(!DUK_HOBJECT_HAS_STRICT(func)); - - duk_dup(thr, i_map); - duk_xdef_prop_stridx(thr, i_arg, DUK_STRIDX_INT_MAP, DUK_PROPDESC_FLAGS_NONE); /* out of spec, don't care */ - - /* The variable environment for magic variable bindings needs to be - * given by the caller and recorded in the arguments object. - * - * See E5 Section 10.6, the creation of setters/getters. - * - * The variable environment also provides access to the callee, so - * an explicit (internal) callee property is not needed. - */ - - duk_push_hobject(thr, varenv); - duk_xdef_prop_stridx(thr, i_arg, DUK_STRIDX_INT_VARENV, DUK_PROPDESC_FLAGS_NONE); /* out of spec, don't care */ - } - - /* steps 13-14 */ - if (DUK_HOBJECT_HAS_STRICT(func)) { - /* Callee/caller are throwers and are not deletable etc. They - * could be implemented as virtual properties, but currently - * there is no support for virtual properties which are accessors - * (only plain virtual properties). This would not be difficult - * to change in duk_hobject_props, but we can make the throwers - * normal, concrete properties just as easily. - * - * Note that the specification requires that the *same* thrower - * built-in object is used here! See E5 Section 10.6 main - * algoritm, step 14, and Section 13.2.3 which describes the - * thrower. See test case test-arguments-throwers.js. - */ - - DUK_DDD(DUK_DDDPRINT("strict function, setting caller/callee to throwers")); - - /* In ES2017 .caller is no longer set at all. */ - duk_xdef_prop_stridx_thrower(thr, i_arg, DUK_STRIDX_CALLEE); - } else { - DUK_DDD(DUK_DDDPRINT("non-strict function, setting callee to actual value")); - duk_push_hobject(thr, func); - duk_xdef_prop_stridx(thr, i_arg, DUK_STRIDX_CALLEE, DUK_PROPDESC_FLAGS_WC); - } - - /* set exotic behavior only after we're done */ - if (need_map) { - /* Exotic behaviors are only enabled for arguments objects - * which have a parameter map (see E5 Section 10.6 main - * algorithm, step 12). - * - * In particular, a non-strict arguments object with no - * mapped formals does *NOT* get exotic behavior, even - * for e.g. "caller" property. This seems counterintuitive - * but seems to be the case. - */ - - /* cannot be strict (never mapped variables) */ - DUK_ASSERT(!DUK_HOBJECT_HAS_STRICT(func)); - - DUK_DDD(DUK_DDDPRINT("enabling exotic behavior for arguments object")); - DUK_HOBJECT_SET_EXOTIC_ARGUMENTS(arg); - } else { - DUK_DDD(DUK_DDDPRINT("not enabling exotic behavior for arguments object")); - } - - DUK_DDD(DUK_DDDPRINT("final arguments related objects: " - "arguments at index %ld -> %!O " - "map at index %ld -> %!O " - "mappednames at index %ld -> %!O", - (long) i_arg, - (duk_heaphdr *) duk_get_hobject(thr, i_arg), - (long) i_map, - (duk_heaphdr *) duk_get_hobject(thr, i_map), - (long) i_mappednames, - (duk_heaphdr *) duk_get_hobject(thr, i_mappednames))); - - /* [ args(n) envobj formals arguments map mappednames ] */ - - duk_pop_2(thr); - duk_remove_m2(thr); - - /* [ args(n) envobj arguments ] */ -} - -/* Helper for creating the arguments object and adding it to the env record - * on top of the value stack. - */ -DUK_LOCAL void duk__handle_createargs_for_call(duk_hthread *thr, duk_hobject *func, duk_hobject *env, duk_idx_t idx_args) { - DUK_DDD(DUK_DDDPRINT("creating arguments object for function call")); - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(func != NULL); - DUK_ASSERT(env != NULL); - DUK_ASSERT(DUK_HOBJECT_HAS_CREATEARGS(func)); - - /* [ ... arg1 ... argN envobj ] */ - - duk__create_arguments_object(thr, func, env, idx_args); - - /* [ ... arg1 ... argN envobj argobj ] */ - - duk_xdef_prop_stridx_short(thr, - -2, - DUK_STRIDX_LC_ARGUMENTS, - DUK_HOBJECT_HAS_STRICT(func) ? DUK_PROPDESC_FLAGS_E : /* strict: non-deletable, non-writable */ - DUK_PROPDESC_FLAGS_WE); /* non-strict: non-deletable, writable */ - /* [ ... arg1 ... argN envobj ] */ -} - -/* - * Helpers for constructor call handling. - * - * There are two [[Construct]] operations in the specification: - * - * - E5 Section 13.2.2: for Function objects - * - E5 Section 15.3.4.5.2: for "bound" Function objects - * - * The chain of bound functions is resolved in Section 15.3.4.5.2, - * with arguments "piling up" until the [[Construct]] internal - * method is called on the final, actual Function object. Note - * that the "prototype" property is looked up *only* from the - * final object, *before* calling the constructor. - * - * Since Duktape 2.2 bound functions are represented with the - * duk_hboundfunc internal type, and bound function chains are - * collapsed when a bound function is created. As a result, the - * direct target of a duk_hboundfunc is always non-bound and the - * this/argument lists have been resolved. - * - * When constructing new Array instances, an unnecessary object is - * created and discarded now: the standard [[Construct]] creates an - * object, and calls the Array constructor. The Array constructor - * returns an Array instance, which is used as the result value for - * the "new" operation; the object created before the Array constructor - * call is discarded. - * - * This would be easy to fix, e.g. by knowing that the Array constructor - * will always create a replacement object and skip creating the fallback - * object in that case. - */ - -/* Update default instance prototype for constructor call. */ -DUK_LOCAL void duk__update_default_instance_proto(duk_hthread *thr, duk_idx_t idx_func) { - duk_hobject *proto; - duk_hobject *fallback; - - DUK_ASSERT(duk_is_constructable(thr, idx_func)); - - duk_get_prop_stridx_short(thr, idx_func, DUK_STRIDX_PROTOTYPE); - proto = duk_get_hobject(thr, -1); - if (proto == NULL) { - DUK_DDD(DUK_DDDPRINT("constructor has no 'prototype' property, or value not an object " - "-> leave standard Object prototype as fallback prototype")); - } else { - DUK_DDD(DUK_DDDPRINT("constructor has 'prototype' property with object value " - "-> set fallback prototype to that value: %!iO", - (duk_heaphdr *) proto)); - /* Original fallback (default instance) is untouched when - * resolving bound functions etc. - */ - fallback = duk_known_hobject(thr, idx_func + 1); - DUK_ASSERT(fallback != NULL); - DUK_HOBJECT_SET_PROTOTYPE_UPDREF(thr, fallback, proto); - } - duk_pop(thr); -} - -/* Postprocess: return value special handling, error augmentation. */ -DUK_INTERNAL void duk_call_construct_postprocess(duk_hthread *thr, duk_small_uint_t proxy_invariant) { - /* Use either fallback (default instance) or retval depending - * on retval type. Needs to be called before unwind because - * the default instance is read from the current (immutable) - * 'this' binding. - * - * For Proxy 'construct' calls the return value must be an - * Object (we accept object-like values like buffers and - * lightfuncs too). If not, TypeError. - */ - if (duk_check_type_mask(thr, -1, DUK_TYPE_MASK_OBJECT | DUK_TYPE_MASK_BUFFER | DUK_TYPE_MASK_LIGHTFUNC)) { - DUK_DDD(DUK_DDDPRINT("replacement value")); - } else { - if (DUK_UNLIKELY(proxy_invariant != 0U)) { - /* Proxy 'construct' return value invariant violated. */ - DUK_ERROR_TYPE_INVALID_TRAP_RESULT(thr); - DUK_WO_NORETURN(return;); - } - /* XXX: direct value stack access */ - duk_pop(thr); - duk_push_this(thr); - } - -#if defined(DUK_USE_AUGMENT_ERROR_CREATE) - /* Augment created errors upon creation, not when they are thrown or - * rethrown. __FILE__ and __LINE__ are not desirable here; the call - * stack reflects the caller which is correct. Skip topmost, unwound - * activation when creating a traceback. If thr->ptr_curr_pc was != - * NULL we'd need to sync the current PC so that the traceback comes - * out right; however it is always synced here so just assert for it. - */ - DUK_ASSERT(thr->ptr_curr_pc == NULL); - duk_err_augment_error_create(thr, thr, NULL, 0, DUK_AUGMENT_FLAG_NOBLAME_FILELINE | DUK_AUGMENT_FLAG_SKIP_ONE); -#endif -} - -/* - * Helper for handling a bound function when a call is being made. - * - * Assumes that bound function chains have been "collapsed" so that either - * the target is non-bound or there is one bound function that points to a - * nonbound target. - * - * Prepends the bound arguments to the value stack (at idx_func + 2). - * The 'this' binding is also updated if necessary (at idx_func + 1). - * Note that for constructor calls the 'this' binding is never updated by - * [[BoundThis]]. - */ - -DUK_LOCAL void duk__handle_bound_chain_for_call(duk_hthread *thr, duk_idx_t idx_func, duk_bool_t is_constructor_call) { - duk_tval *tv_func; - duk_hobject *func; - duk_idx_t len; - - DUK_ASSERT(thr != NULL); - - /* On entry, item at idx_func is a bound, non-lightweight function, - * but we don't rely on that below. - */ - - DUK_ASSERT(duk_get_top(thr) >= idx_func + 2); - - tv_func = duk_require_tval(thr, idx_func); - DUK_ASSERT(tv_func != NULL); - - if (DUK_TVAL_IS_OBJECT(tv_func)) { - func = DUK_TVAL_GET_OBJECT(tv_func); - - /* XXX: separate helper function, out of fast path? */ - if (DUK_HOBJECT_HAS_BOUNDFUNC(func)) { - duk_hboundfunc *h_bound; - duk_tval *tv_args; - duk_tval *tv_gap; - - h_bound = (duk_hboundfunc *) (void *) func; - tv_args = h_bound->args; - len = h_bound->nargs; - DUK_ASSERT(len == 0 || tv_args != NULL); - - DUK_DDD(DUK_DDDPRINT("bound function encountered, ptr=%p: %!T", - (void *) DUK_TVAL_GET_OBJECT(tv_func), - tv_func)); - - /* [ ... func this arg1 ... argN ] */ - - if (is_constructor_call) { - /* See: tests/ecmascript/test-spec-bound-constructor.js */ - DUK_DDD(DUK_DDDPRINT("constructor call: don't update this binding")); - } else { - /* XXX: duk_replace_tval */ - duk_push_tval(thr, &h_bound->this_binding); - duk_replace(thr, idx_func + 1); /* idx_this = idx_func + 1 */ - } - - /* [ ... func this arg1 ... argN ] */ - - duk_require_stack(thr, len); - - tv_gap = duk_reserve_gap(thr, idx_func + 2, len); - duk_copy_tvals_incref(thr, tv_gap, tv_args, (duk_size_t) len); - - /* [ ... func this arg1 ... argN ] */ - - duk_push_tval(thr, &h_bound->target); - duk_replace(thr, idx_func); /* replace in stack */ - - DUK_DDD(DUK_DDDPRINT("bound function handled, idx_func=%ld, curr func=%!T", - (long) idx_func, - duk_get_tval(thr, idx_func))); - } - } else if (DUK_TVAL_IS_LIGHTFUNC(tv_func)) { - /* Lightweight function: never bound, so terminate. */ - ; - } else { - /* Shouldn't happen, so ugly error is enough. */ - DUK_ERROR_INTERNAL(thr); - DUK_WO_NORETURN(return;); - } - - DUK_ASSERT(duk_get_top(thr) >= idx_func + 2); - - DUK_DDD(DUK_DDDPRINT("final non-bound function is: %!T", duk_get_tval(thr, idx_func))); - -#if defined(DUK_USE_ASSERTIONS) - tv_func = duk_require_tval(thr, idx_func); - DUK_ASSERT(DUK_TVAL_IS_LIGHTFUNC(tv_func) || DUK_TVAL_IS_OBJECT(tv_func)); - if (DUK_TVAL_IS_OBJECT(tv_func)) { - func = DUK_TVAL_GET_OBJECT(tv_func); - DUK_ASSERT(func != NULL); - DUK_ASSERT(!DUK_HOBJECT_HAS_BOUNDFUNC(func)); - DUK_ASSERT(DUK_HOBJECT_HAS_COMPFUNC(func) || DUK_HOBJECT_HAS_NATFUNC(func) || DUK_HOBJECT_IS_PROXY(func)); - } -#endif -} - -/* - * Helper for inline handling of .call(), .apply(), and .construct(). - */ - -DUK_LOCAL duk_bool_t duk__handle_specialfuncs_for_call(duk_hthread *thr, - duk_idx_t idx_func, - duk_hobject *func, - duk_small_uint_t *call_flags, - duk_bool_t first) { -#if defined(DUK_USE_ASSERTIONS) - duk_c_function natfunc; -#endif - duk_tval *tv_args; - - DUK_ASSERT(func != NULL); - DUK_ASSERT((*call_flags & DUK_CALL_FLAG_CONSTRUCT) == 0); /* Caller. */ - -#if defined(DUK_USE_ASSERTIONS) - natfunc = ((duk_hnatfunc *) func)->func; - DUK_ASSERT(natfunc != NULL); -#endif - - /* On every round of function resolution at least target function and - * 'this' binding are set. We can assume that here, and must guarantee - * it on exit. Value stack reserve is extended for bound function and - * .apply() unpacking so we don't need to extend it here when we need a - * few slots. - */ - DUK_ASSERT(duk_get_top(thr) >= idx_func + 2); - - /* Handle native 'eval' specially. A direct eval check is only made - * for the first resolution attempt; e.g. a bound eval call is -not- - * a direct eval call. - */ - if (DUK_UNLIKELY(((duk_hnatfunc *) func)->magic == 15)) { - /* For now no special handling except for direct eval - * detection. - */ - DUK_ASSERT(((duk_hnatfunc *) func)->func == duk_bi_global_object_eval); - if (first && (*call_flags & DUK_CALL_FLAG_CALLED_AS_EVAL)) { - *call_flags = (*call_flags & ~DUK_CALL_FLAG_CALLED_AS_EVAL) | DUK_CALL_FLAG_DIRECT_EVAL; - } - DUK_ASSERT(duk_get_top(thr) >= idx_func + 2); - return 1; /* stop resolving */ - } - - /* Handle special functions based on the DUK_HOBJECT_FLAG_SPECIAL_CALL - * flag; their magic value is used for switch-case. - * - * NOTE: duk_unpack_array_like() reserves value stack space - * for the result values (unlike most other value stack calls). - */ - switch (((duk_hnatfunc *) func)->magic) { - case 0: { /* 0=Function.prototype.call() */ - /* Value stack: - * idx_func + 0: Function.prototype.call() [removed] - * idx_func + 1: this binding for .call (target function) - * idx_func + 2: 1st argument to .call, desired 'this' binding - * idx_func + 3: 2nd argument to .call, desired 1st argument for ultimate target - * ... - * - * Remove idx_func + 0 to get: - * idx_func + 0: target function - * idx_func + 1: this binding - * idx_func + 2: call arguments - * ... - */ - DUK_ASSERT(natfunc == duk_bi_function_prototype_call); - duk_remove_unsafe(thr, idx_func); - tv_args = thr->valstack_bottom + idx_func + 2; - if (thr->valstack_top < tv_args) { - DUK_ASSERT(tv_args <= thr->valstack_end); - thr->valstack_top = tv_args; /* at least target function and 'this' binding present */ - } - break; - } - case 1: { /* 1=Function.prototype.apply() */ - /* Value stack: - * idx_func + 0: Function.prototype.apply() [removed] - * idx_func + 1: this binding for .apply (target function) - * idx_func + 2: 1st argument to .apply, desired 'this' binding - * idx_func + 3: 2nd argument to .apply, argArray - * [anything after this MUST be ignored] - * - * Remove idx_func + 0 and unpack the argArray to get: - * idx_func + 0: target function - * idx_func + 1: this binding - * idx_func + 2: call arguments - * ... - */ - DUK_ASSERT(natfunc == duk_bi_function_prototype_apply); - duk_remove_unsafe(thr, idx_func); - goto apply_shared; - } -#if defined(DUK_USE_REFLECT_BUILTIN) - case 2: { /* 2=Reflect.apply() */ - /* Value stack: - * idx_func + 0: Reflect.apply() [removed] - * idx_func + 1: this binding for .apply (ignored, usually Reflect) [removed] - * idx_func + 2: 1st argument to .apply, target function - * idx_func + 3: 2nd argument to .apply, desired 'this' binding - * idx_func + 4: 3rd argument to .apply, argArray - * [anything after this MUST be ignored] - * - * Remove idx_func + 0 and idx_func + 1, and unpack the argArray to get: - * idx_func + 0: target function - * idx_func + 1: this binding - * idx_func + 2: call arguments - * ... - */ - DUK_ASSERT(natfunc == duk_bi_reflect_apply); - duk_remove_n_unsafe(thr, idx_func, 2); - goto apply_shared; - } - case 3: { /* 3=Reflect.construct() */ - /* Value stack: - * idx_func + 0: Reflect.construct() [removed] - * idx_func + 1: this binding for .construct (ignored, usually Reflect) [removed] - * idx_func + 2: 1st argument to .construct, target function - * idx_func + 3: 2nd argument to .construct, argArray - * idx_func + 4: 3rd argument to .construct, newTarget - * [anything after this MUST be ignored] - * - * Remove idx_func + 0 and idx_func + 1, unpack the argArray, - * and insert default instance (prototype not yet updated), to get: - * idx_func + 0: target function - * idx_func + 1: this binding (default instance) - * idx_func + 2: constructor call arguments - * ... - * - * Call flags must be updated to reflect the fact that we're - * now dealing with a constructor call, and e.g. the 'this' - * binding cannot be overwritten if the target is bound. - * - * newTarget is checked but not yet passed onwards. - */ - - duk_idx_t top; - - DUK_ASSERT(natfunc == duk_bi_reflect_construct); - *call_flags |= DUK_CALL_FLAG_CONSTRUCT; - duk_remove_n_unsafe(thr, idx_func, 2); - top = duk_get_top(thr); - if (!duk_is_constructable(thr, idx_func)) { - /* Target constructability must be checked before - * unpacking argArray (which may cause side effects). - * Just return; caller will throw the error. - */ - duk_set_top_unsafe(thr, idx_func + 2); /* satisfy asserts */ - break; - } - duk_push_object(thr); - duk_insert(thr, idx_func + 1); /* default instance */ - - /* [ ... func default_instance argArray newTarget? ] */ - - top = duk_get_top(thr); - if (top < idx_func + 3) { - /* argArray is a mandatory argument for Reflect.construct(). */ - DUK_ERROR_TYPE_INVALID_ARGS(thr); - DUK_WO_NORETURN(return 0;); - } - if (top > idx_func + 3) { - if (!duk_strict_equals(thr, idx_func, idx_func + 3)) { - /* XXX: [[Construct]] newTarget currently unsupported */ - DUK_ERROR_UNSUPPORTED(thr); - DUK_WO_NORETURN(return 0;); - } - duk_set_top_unsafe(thr, idx_func + 3); /* remove any args beyond argArray */ - } - DUK_ASSERT(duk_get_top(thr) == idx_func + 3); - DUK_ASSERT(duk_is_valid_index(thr, idx_func + 2)); - (void) duk_unpack_array_like(thr, - idx_func + 2); /* XXX: should also remove target to be symmetric with duk_pack()? */ - duk_remove(thr, idx_func + 2); - DUK_ASSERT(duk_get_top(thr) >= idx_func + 2); - break; - } -#endif /* DUK_USE_REFLECT_BUILTIN */ - default: { - DUK_ASSERT(0); - DUK_UNREACHABLE(); - } - } - - DUK_ASSERT(duk_get_top(thr) >= idx_func + 2); - return 0; /* keep resolving */ - -apply_shared: - tv_args = thr->valstack_bottom + idx_func + 2; - if (thr->valstack_top <= tv_args) { - DUK_ASSERT(tv_args <= thr->valstack_end); - thr->valstack_top = tv_args; /* at least target func and 'this' binding present */ - /* No need to check for argArray. */ - } else { - DUK_ASSERT(duk_get_top(thr) >= idx_func + 3); /* idx_func + 2 covered above */ - if (thr->valstack_top > tv_args + 1) { - duk_set_top_unsafe(thr, idx_func + 3); /* remove any args beyond argArray */ - } - DUK_ASSERT(duk_is_valid_index(thr, idx_func + 2)); - if (!duk_is_callable(thr, idx_func)) { - /* Avoid unpack side effects if the target isn't callable. - * Calling code will throw the actual error. - */ - } else { - (void) duk_unpack_array_like(thr, idx_func + 2); - duk_remove(thr, idx_func + 2); - } - } - DUK_ASSERT(duk_get_top(thr) >= idx_func + 2); - return 0; /* keep resolving */ -} - -/* - * Helper for Proxy handling. - */ - -#if defined(DUK_USE_ES6_PROXY) -DUK_LOCAL void duk__handle_proxy_for_call(duk_hthread *thr, duk_idx_t idx_func, duk_hproxy *h_proxy, duk_small_uint_t *call_flags) { - duk_bool_t rc; - - /* Value stack: - * idx_func + 0: Proxy object - * idx_func + 1: this binding for call - * idx_func + 2: 1st argument for call - * idx_func + 3: 2nd argument for call - * ... - * - * If Proxy doesn't have a trap for the call ('apply' or 'construct'), - * replace Proxy object with target object. - * - * If we're dealing with a normal call and the Proxy has an 'apply' - * trap, manipulate value stack to: - * - * idx_func + 0: trap - * idx_func + 1: Proxy's handler - * idx_func + 2: Proxy's target - * idx_func + 3: this binding for call (from idx_func + 1) - * idx_func + 4: call arguments packed to an array - * - * If we're dealing with a constructor call and the Proxy has a - * 'construct' trap, manipulate value stack to: - * - * idx_func + 0: trap - * idx_func + 1: Proxy's handler - * idx_func + 2: Proxy's target - * idx_func + 3: call arguments packed to an array - * idx_func + 4: newTarget == Proxy object here - * - * As we don't yet have proper newTarget support, the newTarget at - * idx_func + 3 is just the original constructor being called, i.e. - * the Proxy object (not the target). Note that the default instance - * (original 'this' binding) is dropped and ignored. - */ - - duk_push_hobject(thr, h_proxy->handler); - rc = duk_get_prop_stridx_short(thr, -1, (*call_flags & DUK_CALL_FLAG_CONSTRUCT) ? DUK_STRIDX_CONSTRUCT : DUK_STRIDX_APPLY); - if (rc == 0) { - /* Not found, continue to target. If this is a construct - * call, update default instance prototype using the Proxy, - * not the target. - */ - if (*call_flags & DUK_CALL_FLAG_CONSTRUCT) { - if (!(*call_flags & DUK_CALL_FLAG_DEFAULT_INSTANCE_UPDATED)) { - *call_flags |= DUK_CALL_FLAG_DEFAULT_INSTANCE_UPDATED; - duk__update_default_instance_proto(thr, idx_func); - } - } - duk_pop_2(thr); - duk_push_hobject(thr, h_proxy->target); - duk_replace(thr, idx_func); - return; - } - - /* Here we must be careful not to replace idx_func while - * h_proxy is still needed, otherwise h_proxy may become - * dangling. This could be improved e.g. using a - * duk_pack_slice() with a freeform slice. - */ - - /* Here: - * idx_func + 0: Proxy object - * idx_func + 1: this binding for call - * idx_func + 2: 1st argument for call - * idx_func + 3: 2nd argument for call - * ... - * idx_func + N: handler - * idx_func + N + 1: trap - */ - - duk_insert(thr, idx_func + 1); - duk_insert(thr, idx_func + 2); - duk_push_hobject(thr, h_proxy->target); - duk_insert(thr, idx_func + 3); - duk_pack(thr, duk_get_top(thr) - (idx_func + 5)); - DUK_ASSERT(!duk_is_bare_object(thr, -1)); - - /* Here: - * idx_func + 0: Proxy object - * idx_func + 1: trap - * idx_func + 2: Proxy's handler - * idx_func + 3: Proxy's target - * idx_func + 4: this binding for call - * idx_func + 5: arguments array - */ - DUK_ASSERT(duk_get_top(thr) == idx_func + 6); - - if (*call_flags & DUK_CALL_FLAG_CONSTRUCT) { - *call_flags |= DUK_CALL_FLAG_CONSTRUCT_PROXY; /* Enable 'construct' trap return invariant check. */ - *call_flags &= ~(DUK_CALL_FLAG_CONSTRUCT); /* Resume as non-constructor call to the trap. */ - - /* 'apply' args: target, thisArg, argArray - * 'construct' args: target, argArray, newTarget - */ - duk_remove(thr, idx_func + 4); - duk_push_hobject(thr, (duk_hobject *) h_proxy); - } - - /* Finalize value stack layout by removing Proxy reference. */ - duk_remove(thr, idx_func); - h_proxy = NULL; /* invalidated */ - DUK_ASSERT(duk_get_top(thr) == idx_func + 5); -} -#endif /* DUK_USE_ES6_PROXY */ - -/* - * Helper for setting up var_env and lex_env of an activation, - * assuming it does NOT have the DUK_HOBJECT_FLAG_NEWENV flag. - */ - -DUK_LOCAL void duk__handle_oldenv_for_call(duk_hthread *thr, duk_hobject *func, duk_activation *act) { - duk_hcompfunc *f; - duk_hobject *h_lex; - duk_hobject *h_var; - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(func != NULL); - DUK_ASSERT(act != NULL); - DUK_ASSERT(!DUK_HOBJECT_HAS_NEWENV(func)); - DUK_ASSERT(!DUK_HOBJECT_HAS_CREATEARGS(func)); - DUK_ASSERT(DUK_HOBJECT_IS_COMPFUNC(func)); - DUK_UNREF(thr); - - f = (duk_hcompfunc *) func; - h_lex = DUK_HCOMPFUNC_GET_LEXENV(thr->heap, f); - h_var = DUK_HCOMPFUNC_GET_VARENV(thr->heap, f); - DUK_ASSERT(h_lex != NULL); /* Always true for closures (not for templates) */ - DUK_ASSERT(h_var != NULL); - act->lex_env = h_lex; - act->var_env = h_var; - DUK_HOBJECT_INCREF(thr, h_lex); - DUK_HOBJECT_INCREF(thr, h_var); -} - -/* - * Helper for updating callee 'caller' property. - */ - -#if defined(DUK_USE_NONSTD_FUNC_CALLER_PROPERTY) -DUK_LOCAL void duk__update_func_caller_prop(duk_hthread *thr, duk_hobject *func) { - duk_tval *tv_caller; - duk_hobject *h_tmp; - duk_activation *act_callee; - duk_activation *act_caller; - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(func != NULL); - DUK_ASSERT(!DUK_HOBJECT_HAS_BOUNDFUNC(func)); /* bound chain resolved */ - DUK_ASSERT(thr->callstack_top >= 1); - - if (DUK_HOBJECT_HAS_STRICT(func)) { - /* Strict functions don't get their 'caller' updated. */ - return; - } - - DUK_ASSERT(thr->callstack_top > 0); - act_callee = thr->callstack_curr; - DUK_ASSERT(act_callee != NULL); - act_caller = (thr->callstack_top >= 2 ? act_callee->parent : NULL); - - /* XXX: check .caller writability? */ - - /* Backup 'caller' property and update its value. */ - tv_caller = duk_hobject_find_entry_tval_ptr_stridx(thr->heap, func, DUK_STRIDX_CALLER); - if (tv_caller) { - /* If caller is global/eval code, 'caller' should be set to - * 'null'. - * - * XXX: there is no exotic flag to infer this correctly now. - * The NEWENV flag is used now which works as intended for - * everything (global code, non-strict eval code, and functions) - * except strict eval code. Bound functions are never an issue - * because 'func' has been resolved to a non-bound function. - */ - - if (act_caller != NULL) { - /* act_caller->func may be NULL in some finalization cases, - * just treat like we don't know the caller. - */ - if (act_caller->func && !DUK_HOBJECT_HAS_NEWENV(act_caller->func)) { - /* Setting to NULL causes 'caller' to be set to - * 'null' as desired. - */ - act_caller = NULL; - } - } - - if (DUK_TVAL_IS_OBJECT(tv_caller)) { - h_tmp = DUK_TVAL_GET_OBJECT(tv_caller); - DUK_ASSERT(h_tmp != NULL); - act_callee->prev_caller = h_tmp; - - /* Previous value doesn't need refcount changes because its ownership - * is transferred to prev_caller. - */ - - if (act_caller != NULL) { - DUK_ASSERT(act_caller->func != NULL); - DUK_TVAL_SET_OBJECT(tv_caller, act_caller->func); - DUK_TVAL_INCREF(thr, tv_caller); - } else { - DUK_TVAL_SET_NULL(tv_caller); /* no incref */ - } - } else { - /* 'caller' must only take on 'null' or function value */ - DUK_ASSERT(!DUK_TVAL_IS_HEAP_ALLOCATED(tv_caller)); - DUK_ASSERT(act_callee->prev_caller == NULL); - if (act_caller != NULL && act_caller->func) { - /* Tolerate act_caller->func == NULL which happens in - * some finalization cases; treat like unknown caller. - */ - DUK_TVAL_SET_OBJECT(tv_caller, act_caller->func); - DUK_TVAL_INCREF(thr, tv_caller); - } else { - DUK_TVAL_SET_NULL(tv_caller); /* no incref */ - } - } - } -} -#endif /* DUK_USE_NONSTD_FUNC_CALLER_PROPERTY */ - -/* - * Shared helpers for resolving the final, non-bound target function of the - * call and the effective 'this' binding. Resolves bound functions and - * applies .call(), .apply(), and .construct() inline. - * - * Proxy traps are also handled inline so that if the target is a Proxy with - * a 'call' or 'construct' trap, the trap handler is called with a modified - * argument list. - * - * Once the bound function / .call() / .apply() / .construct() sequence has - * been resolved, the value at idx_func + 1 may need coercion described in - * E5 Section 10.4.3. - * - * A call that begins as a non-constructor call may be converted into a - * constructor call during the resolution process if Reflect.construct() - * is invoked. This is handled by updating the caller's call_flags. - * - * For global and eval code (E5 Sections 10.4.1 and 10.4.2), we assume - * that the caller has provided the correct 'this' binding explicitly - * when calling, i.e.: - * - * - global code: this=global object - * - direct eval: this=copy from eval() caller's this binding - * - other eval: this=global object - * - * The 'this' coercion may cause a recursive function call with arbitrary - * side effects, because ToObject() may be called. - */ - -DUK_LOCAL DUK_INLINE void duk__coerce_nonstrict_this_binding(duk_hthread *thr, duk_idx_t idx_this) { - duk_tval *tv_this; - duk_hobject *obj_global; - - tv_this = thr->valstack_bottom + idx_this; - switch (DUK_TVAL_GET_TAG(tv_this)) { - case DUK_TAG_OBJECT: - DUK_DDD(DUK_DDDPRINT("this binding: non-strict, object -> use directly")); - break; - case DUK_TAG_UNDEFINED: - case DUK_TAG_NULL: - DUK_DDD(DUK_DDDPRINT("this binding: non-strict, undefined/null -> use global object")); - obj_global = thr->builtins[DUK_BIDX_GLOBAL]; - /* XXX: avoid this check somehow */ - if (DUK_LIKELY(obj_global != NULL)) { - DUK_ASSERT(!DUK_TVAL_IS_HEAP_ALLOCATED(tv_this)); /* no need to decref previous value */ - DUK_TVAL_SET_OBJECT(tv_this, obj_global); - DUK_HOBJECT_INCREF(thr, obj_global); - } else { - /* This may only happen if built-ins are being "torn down". - * This behavior is out of specification scope. - */ - DUK_D(DUK_DPRINT("this binding: wanted to use global object, but it is NULL -> using undefined instead")); - DUK_ASSERT(!DUK_TVAL_IS_HEAP_ALLOCATED(tv_this)); /* no need to decref previous value */ - DUK_TVAL_SET_UNDEFINED(tv_this); /* nothing to incref */ - } - break; - default: - /* Plain buffers and lightfuncs are object coerced. Lightfuncs - * very rarely come here however, because the call target would - * need to be a non-strict non-lightfunc (lightfuncs are considered - * strict) with an explicit lightfunc 'this' binding. - */ - DUK_ASSERT(!DUK_TVAL_IS_UNUSED(tv_this)); - DUK_DDD(DUK_DDDPRINT("this binding: non-strict, not object/undefined/null -> use ToObject(value)")); - duk_to_object(thr, idx_this); /* may have side effects */ - break; - } -} - -DUK_LOCAL DUK_ALWAYS_INLINE duk_bool_t duk__resolve_target_fastpath_check(duk_hthread *thr, - duk_idx_t idx_func, - duk_hobject **out_func, - duk_small_uint_t call_flags) { -#if defined(DUK_USE_PREFER_SIZE) - DUK_UNREF(thr); - DUK_UNREF(idx_func); - DUK_UNREF(out_func); - DUK_UNREF(call_flags); -#else /* DUK_USE_PREFER_SIZE */ - duk_tval *tv_func; - duk_hobject *func; - - if (DUK_UNLIKELY(call_flags & DUK_CALL_FLAG_CONSTRUCT)) { - return 0; - } - - tv_func = DUK_GET_TVAL_POSIDX(thr, idx_func); - DUK_ASSERT(tv_func != NULL); - - if (DUK_LIKELY(DUK_TVAL_IS_OBJECT(tv_func))) { - func = DUK_TVAL_GET_OBJECT(tv_func); - if (DUK_HOBJECT_IS_CALLABLE(func) && !DUK_HOBJECT_HAS_BOUNDFUNC(func) && !DUK_HOBJECT_HAS_SPECIAL_CALL(func)) { - *out_func = func; - - if (DUK_HOBJECT_HAS_STRICT(func)) { - /* Strict function: no 'this' coercion. */ - return 1; - } - - duk__coerce_nonstrict_this_binding(thr, idx_func + 1); - return 1; - } - } else if (DUK_TVAL_IS_LIGHTFUNC(tv_func)) { - *out_func = NULL; - - /* Lightfuncs are considered strict, so 'this' binding is - * used as is. They're never bound, always constructable, - * and never special functions. - */ - return 1; - } -#endif /* DUK_USE_PREFER_SIZE */ - return 0; /* let slow path deal with it */ -} - -DUK_LOCAL duk_hobject *duk__resolve_target_func_and_this_binding(duk_hthread *thr, - duk_idx_t idx_func, - duk_small_uint_t *call_flags) { - duk_tval *tv_func; - duk_hobject *func; - duk_bool_t first; - - DUK_ASSERT(duk_get_top(thr) >= idx_func + 2); - - for (first = 1;; first = 0) { - DUK_ASSERT(duk_get_top(thr) >= idx_func + 2); - - tv_func = DUK_GET_TVAL_POSIDX(thr, idx_func); - DUK_ASSERT(tv_func != NULL); - - DUK_DD(DUK_DDPRINT("target func: %!iT", tv_func)); - - if (DUK_TVAL_IS_OBJECT(tv_func)) { - func = DUK_TVAL_GET_OBJECT(tv_func); - - if (*call_flags & DUK_CALL_FLAG_CONSTRUCT) { - if (DUK_UNLIKELY(!DUK_HOBJECT_HAS_CONSTRUCTABLE(func))) { - goto not_constructable; - } - } else { - if (DUK_UNLIKELY(!DUK_HOBJECT_IS_CALLABLE(func))) { - goto not_callable; - } - } - - if (DUK_LIKELY(!DUK_HOBJECT_HAS_BOUNDFUNC(func) && !DUK_HOBJECT_HAS_SPECIAL_CALL(func) && - !DUK_HOBJECT_HAS_EXOTIC_PROXYOBJ(func))) { - /* Common case, so test for using a single bitfield test. - * Break out to handle this coercion etc. - */ - break; - } - - /* XXX: could set specialcall for boundfuncs too, simplify check above */ - - if (DUK_HOBJECT_HAS_BOUNDFUNC(func)) { - DUK_ASSERT(!DUK_HOBJECT_HAS_SPECIAL_CALL(func)); - DUK_ASSERT(!DUK_HOBJECT_IS_NATFUNC(func)); - - /* Callable/constructable flags are the same - * for the bound function and its target, so - * we don't need to check them here, we can - * check them from the target only. - */ - duk__handle_bound_chain_for_call(thr, idx_func, *call_flags & DUK_CALL_FLAG_CONSTRUCT); - - DUK_ASSERT(DUK_TVAL_IS_OBJECT(duk_require_tval(thr, idx_func)) || - DUK_TVAL_IS_LIGHTFUNC(duk_require_tval(thr, idx_func))); - } else { - DUK_ASSERT(DUK_HOBJECT_HAS_SPECIAL_CALL(func)); - -#if defined(DUK_USE_ES6_PROXY) - if (DUK_HOBJECT_HAS_EXOTIC_PROXYOBJ(func)) { - /* If no trap, resume processing from Proxy trap. - * If trap exists, helper converts call into a trap - * call; this may change a constructor call into a - * normal (non-constructor) trap call. We must - * continue processing even when a trap is found as - * the trap may be bound. - */ - duk__handle_proxy_for_call(thr, idx_func, (duk_hproxy *) func, call_flags); - } else -#endif - { - DUK_ASSERT(DUK_HOBJECT_IS_NATFUNC(func)); - DUK_ASSERT(DUK_HOBJECT_HAS_CALLABLE(func)); - DUK_ASSERT(!DUK_HOBJECT_HAS_CONSTRUCTABLE(func)); - /* Constructable check already done above. */ - - if (duk__handle_specialfuncs_for_call(thr, idx_func, func, call_flags, first) != 0) { - /* Encountered native eval call, normal call - * context. Break out, handle this coercion etc. - */ - break; - } - } - } - /* Retry loop. */ - } else if (DUK_TVAL_IS_LIGHTFUNC(tv_func)) { - /* Lightfuncs are: - * - Always strict, so no 'this' coercion. - * - Always callable. - * - Always constructable. - * - Never specialfuncs. - */ - func = NULL; - goto finished; - } else { - goto not_callable; - } - } - - DUK_ASSERT(func != NULL); - - if (!DUK_HOBJECT_HAS_STRICT(func)) { - /* Non-strict target needs 'this' coercion. - * This has potential side effects invalidating - * 'tv_func'. - */ - duk__coerce_nonstrict_this_binding(thr, idx_func + 1); - } - if (*call_flags & DUK_CALL_FLAG_CONSTRUCT) { - if (!(*call_flags & DUK_CALL_FLAG_DEFAULT_INSTANCE_UPDATED)) { - *call_flags |= DUK_CALL_FLAG_DEFAULT_INSTANCE_UPDATED; - duk__update_default_instance_proto(thr, idx_func); - } - } - -finished : -#if defined(DUK_USE_ASSERTIONS) -{ - duk_tval *tv_tmp; - - tv_tmp = duk_get_tval(thr, idx_func); - DUK_ASSERT(tv_tmp != NULL); - - DUK_ASSERT((DUK_TVAL_IS_OBJECT(tv_tmp) && DUK_HOBJECT_IS_CALLABLE(DUK_TVAL_GET_OBJECT(tv_tmp))) || - DUK_TVAL_IS_LIGHTFUNC(tv_tmp)); - DUK_ASSERT(func == NULL || !DUK_HOBJECT_HAS_BOUNDFUNC(func)); - DUK_ASSERT(func == NULL || (DUK_HOBJECT_IS_COMPFUNC(func) || DUK_HOBJECT_IS_NATFUNC(func))); - DUK_ASSERT(func == NULL || (DUK_HOBJECT_HAS_CONSTRUCTABLE(func) || (*call_flags & DUK_CALL_FLAG_CONSTRUCT) == 0)); -} -#endif - - return func; - -not_callable: - DUK_ASSERT(tv_func != NULL); - -#if defined(DUK_USE_VERBOSE_ERRORS) - /* GETPROPC delayed error handling: when target is not callable, - * GETPROPC replaces idx_func+0 with a non-callable wrapper object - * with a hidden Symbol to signify it's to be handled here. If - * found, unwrap the original Error and throw it as is here. The - * hidden Symbol is only checked as an own property, not inherited - * (which would be dangerous). - */ - if (DUK_TVAL_IS_OBJECT(tv_func)) { - duk_tval *tv_wrap = - duk_hobject_find_entry_tval_ptr_stridx(thr->heap, DUK_TVAL_GET_OBJECT(tv_func), DUK_STRIDX_INT_TARGET); - if (tv_wrap != NULL) { - DUK_DD(DUK_DDPRINT("delayed error from GETPROPC: %!T", tv_wrap)); - duk_push_tval(thr, tv_wrap); - (void) duk_throw(thr); - DUK_WO_NORETURN(return NULL;); - } - } -#endif - -#if defined(DUK_USE_VERBOSE_ERRORS) -#if defined(DUK_USE_PARANOID_ERRORS) - DUK_ERROR_FMT1(thr, DUK_ERR_TYPE_ERROR, "%s not callable", duk_get_type_name(thr, idx_func)); -#else - DUK_ERROR_FMT1(thr, DUK_ERR_TYPE_ERROR, "%s not callable", duk_push_string_tval_readable(thr, tv_func)); -#endif -#else - DUK_ERROR_TYPE(thr, DUK_STR_NOT_CALLABLE); -#endif - DUK_WO_NORETURN(return NULL;); - -not_constructable: - /* For now GETPROPC delayed error not needed for constructor calls. */ -#if defined(DUK_USE_VERBOSE_ERRORS) -#if defined(DUK_USE_PARANOID_ERRORS) - DUK_ERROR_FMT1(thr, DUK_ERR_TYPE_ERROR, "%s not constructable", duk_get_type_name(thr, idx_func)); -#else - DUK_ERROR_FMT1(thr, DUK_ERR_TYPE_ERROR, "%s not constructable", duk_push_string_tval_readable(thr, tv_func)); -#endif -#else - DUK_ERROR_TYPE(thr, DUK_STR_NOT_CONSTRUCTABLE); -#endif - DUK_WO_NORETURN(return NULL;); -} - -/* - * Manipulate value stack so that exactly 'num_stack_rets' return - * values are at 'idx_retbase' in every case, assuming there are - * 'rc' return values on top of stack. - * - * This is a bit tricky, because the called C function operates in - * the same activation record and may have e.g. popped the stack - * empty (below idx_retbase). - */ - -DUK_LOCAL void duk__safe_call_adjust_valstack(duk_hthread *thr, - duk_idx_t idx_retbase, - duk_idx_t num_stack_rets, - duk_idx_t num_actual_rets) { - duk_idx_t idx_rcbase; - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(idx_retbase >= 0); - DUK_ASSERT(num_stack_rets >= 0); - DUK_ASSERT(num_actual_rets >= 0); - - idx_rcbase = duk_get_top(thr) - num_actual_rets; /* base of known return values */ - if (DUK_UNLIKELY(idx_rcbase < 0)) { - DUK_ERROR_TYPE(thr, DUK_STR_INVALID_CFUNC_RC); - DUK_WO_NORETURN(return;); - } - - DUK_DDD(DUK_DDDPRINT("adjust valstack after func call: " - "num_stack_rets=%ld, num_actual_rets=%ld, stack_top=%ld, idx_retbase=%ld, idx_rcbase=%ld", - (long) num_stack_rets, - (long) num_actual_rets, - (long) duk_get_top(thr), - (long) idx_retbase, - (long) idx_rcbase)); - - DUK_ASSERT(idx_rcbase >= 0); /* caller must check */ - - /* Space for num_stack_rets was reserved before the safe call. - * Because value stack reserve cannot shrink except in call returns, - * the reserve is still in place. Adjust valstack, carefully - * ensuring we don't overstep the reserve. - */ - - /* Match idx_rcbase with idx_retbase so that the return values - * start at the correct index. - */ - if (idx_rcbase > idx_retbase) { - duk_idx_t count = idx_rcbase - idx_retbase; - - DUK_DDD(DUK_DDDPRINT("elements at/after idx_retbase have enough to cover func retvals " - "(idx_retbase=%ld, idx_rcbase=%ld)", - (long) idx_retbase, - (long) idx_rcbase)); - - /* Remove values between irc_rcbase (start of intended return - * values) and idx_retbase to lower return values to idx_retbase. - */ - DUK_ASSERT(count > 0); - duk_remove_n(thr, idx_retbase, count); /* may be NORZ */ - } else { - duk_idx_t count = idx_retbase - idx_rcbase; - - DUK_DDD(DUK_DDDPRINT("not enough elements at/after idx_retbase to cover func retvals " - "(idx_retbase=%ld, idx_rcbase=%ld)", - (long) idx_retbase, - (long) idx_rcbase)); - - /* Insert 'undefined' at idx_rcbase (start of intended return - * values) to lift return values to idx_retbase. - */ - DUK_ASSERT(count >= 0); - DUK_ASSERT(thr->valstack_end - thr->valstack_top >= count); /* reserve cannot shrink */ - duk_insert_undefined_n(thr, idx_rcbase, count); - } - - /* Chop extra retvals away / extend with undefined. */ - duk_set_top_unsafe(thr, idx_retbase + num_stack_rets); -} - -/* - * Activation setup for tailcalls and non-tailcalls. - */ - -#if defined(DUK_USE_TAILCALL) -DUK_LOCAL duk_small_uint_t duk__call_setup_act_attempt_tailcall(duk_hthread *thr, - duk_small_uint_t call_flags, - duk_idx_t idx_func, - duk_hobject *func, - duk_size_t entry_valstack_bottom_byteoff, - duk_size_t entry_valstack_end_byteoff, - duk_idx_t *out_nargs, - duk_idx_t *out_nregs, - duk_size_t *out_vs_min_bytes, - duk_activation **out_act) { - duk_activation *act; - duk_tval *tv1, *tv2; - duk_idx_t idx_args; - duk_small_uint_t flags1, flags2; -#if defined(DUK_USE_DEBUGGER_SUPPORT) - duk_activation *prev_pause_act; -#endif - - DUK_UNREF(entry_valstack_end_byteoff); - - /* Tailcall cannot be flagged to resume calls, and a - * previous frame must exist. - */ - DUK_ASSERT(thr->callstack_top >= 1); - - act = thr->callstack_curr; - DUK_ASSERT(act != NULL); - *out_act = act; - - if (func == NULL || !DUK_HOBJECT_IS_COMPFUNC(func)) { - DUK_DDD(DUK_DDDPRINT("tail call prevented by target not being ecma function")); - return 0; - } - if (act->flags & DUK_ACT_FLAG_PREVENT_YIELD) { - DUK_DDD(DUK_DDDPRINT("tail call prevented by current activation having DUK_ACT_FLAG_PREVENT_YIELD")); - return 0; - } - /* Tailcall is only allowed if current and candidate - * function have identical return value handling. There - * are three possible return value handling cases: - * 1. Normal function call, no special return value handling. - * 2. Constructor call, return value replacement object check. - * 3. Proxy 'construct' trap call, return value invariant check. - */ - flags1 = (duk_small_uint_t) ((act->flags & DUK_ACT_FLAG_CONSTRUCT) ? 1 : 0) -#if defined(DUK_USE_ES6_PROXY) - | (duk_small_uint_t) ((act->flags & DUK_ACT_FLAG_CONSTRUCT_PROXY) ? 2 : 0) -#endif - ; - flags2 = (duk_small_uint_t) ((call_flags & DUK_CALL_FLAG_CONSTRUCT) ? 1 : 0) -#if defined(DUK_USE_ES6_PROXY) - | (duk_small_uint_t) ((call_flags & DUK_CALL_FLAG_CONSTRUCT_PROXY) ? 2 : 0); -#endif - ; - if (flags1 != flags2) { - DUK_DDD(DUK_DDDPRINT("tail call prevented by incompatible return value handling")); - return 0; - } - DUK_ASSERT(((act->flags & DUK_ACT_FLAG_CONSTRUCT) && (call_flags & DUK_CALL_FLAG_CONSTRUCT)) || - (!(act->flags & DUK_ACT_FLAG_CONSTRUCT) && !(call_flags & DUK_CALL_FLAG_CONSTRUCT))); - DUK_ASSERT(((act->flags & DUK_ACT_FLAG_CONSTRUCT_PROXY) && (call_flags & DUK_CALL_FLAG_CONSTRUCT_PROXY)) || - (!(act->flags & DUK_ACT_FLAG_CONSTRUCT_PROXY) && !(call_flags & DUK_CALL_FLAG_CONSTRUCT_PROXY))); - if (DUK_HOBJECT_HAS_NOTAIL(func)) { - /* See: test-bug-tailcall-preventyield-assert.c. */ - DUK_DDD(DUK_DDDPRINT("tail call prevented by function having a notail flag")); - return 0; - } - - /* - * Tailcall handling - * - * Although the callstack entry is reused, we need to explicitly unwind - * the current activation (or simulate an unwind). In particular, the - * current activation must be closed, otherwise something like - * test-bug-reduce-judofyr.js results. Also catchers need to be unwound - * because there may be non-error-catching label entries in valid tail calls. - * - * Special attention is needed for debugger and pause behavior when - * reusing an activation. - * - Disable StepOut processing for the activation unwind because - * we reuse the activation, see: - * https://github.com/svaarala/duktape/issues/1684. - * - Disable line change pause flag permanently if act == dbg_pause_act - * (if set) because it would no longer be relevant, see: - * https://github.com/svaarala/duktape/issues/1726, - * https://github.com/svaarala/duktape/issues/1786. - * - Check for function entry (e.g. StepInto) pause flag here, because - * the executor pause check won't trigger due to shared activation, see: - * https://github.com/svaarala/duktape/issues/1726. - */ - - DUK_DDD(DUK_DDDPRINT("is tail call, reusing activation at callstack top, at index %ld", (long) (thr->callstack_top - 1))); - - DUK_ASSERT(!DUK_HOBJECT_HAS_BOUNDFUNC(func)); - DUK_ASSERT(!DUK_HOBJECT_HAS_NATFUNC(func)); - DUK_ASSERT(DUK_HOBJECT_HAS_COMPFUNC(func)); - DUK_ASSERT((act->flags & DUK_ACT_FLAG_PREVENT_YIELD) == 0); - DUK_ASSERT(call_flags & DUK_CALL_FLAG_ALLOW_ECMATOECMA); - - /* Unwind the topmost callstack entry before reusing it. This - * also unwinds the catchers related to the topmost entry. - */ - DUK_ASSERT(thr->callstack_top > 0); - DUK_ASSERT(thr->callstack_curr != NULL); -#if defined(DUK_USE_DEBUGGER_SUPPORT) - if (act == thr->heap->dbg_pause_act) { - thr->heap->dbg_pause_flags &= ~DUK_PAUSE_FLAG_LINE_CHANGE; - } - - prev_pause_act = thr->heap->dbg_pause_act; - thr->heap->dbg_pause_act = NULL; - if (thr->heap->dbg_pause_flags & DUK_PAUSE_FLAG_FUNC_ENTRY) { - DUK_D(DUK_DPRINT("PAUSE TRIGGERED by function entry (tailcall)")); - duk_debug_set_paused(thr->heap); - } -#endif - duk_hthread_activation_unwind_reuse_norz(thr); -#if defined(DUK_USE_DEBUGGER_SUPPORT) - thr->heap->dbg_pause_act = prev_pause_act; -#endif - DUK_ASSERT(act == thr->callstack_curr); - - /* XXX: We could restore the caller's value stack reserve - * here, as if we did an actual unwind-and-call. Without - * the restoration, value stack reserve may remain higher - * than would otherwise be possible until we return to a - * non-tailcall. - */ - - /* Then reuse the unwound activation. */ - act->cat = NULL; - act->var_env = NULL; - act->lex_env = NULL; - DUK_ASSERT(func != NULL); - DUK_ASSERT(DUK_HOBJECT_HAS_COMPFUNC(func)); - act->func = func; /* don't want an intermediate exposed state with func == NULL */ -#if defined(DUK_USE_NONSTD_FUNC_CALLER_PROPERTY) - act->prev_caller = NULL; -#endif - /* don't want an intermediate exposed state with invalid pc */ - act->curr_pc = DUK_HCOMPFUNC_GET_CODE_BASE(thr->heap, (duk_hcompfunc *) func); -#if defined(DUK_USE_DEBUGGER_SUPPORT) - act->prev_line = 0; -#endif - DUK_TVAL_SET_OBJECT(&act->tv_func, func); /* borrowed, no refcount */ - DUK_HOBJECT_INCREF(thr, func); - - act->flags = DUK_ACT_FLAG_TAILCALLED; - if (DUK_HOBJECT_HAS_STRICT(func)) { - act->flags |= DUK_ACT_FLAG_STRICT; - } - if (call_flags & DUK_CALL_FLAG_CONSTRUCT) { - act->flags |= DUK_ACT_FLAG_CONSTRUCT; - } -#if defined(DUK_USE_ES6_PROXY) - if (call_flags & DUK_CALL_FLAG_CONSTRUCT_PROXY) { - act->flags |= DUK_ACT_FLAG_CONSTRUCT_PROXY; - } -#endif - - DUK_ASSERT(DUK_ACT_GET_FUNC(act) == func); /* already updated */ - DUK_ASSERT(act->var_env == NULL); - DUK_ASSERT(act->lex_env == NULL); - act->bottom_byteoff = entry_valstack_bottom_byteoff; /* tail call -> reuse current "frame" */ -#if 0 - /* Topmost activation retval_byteoff is considered garbage, no need to init. */ - act->retval_byteoff = 0; -#endif - /* Filled in when final reserve is known, dummy value doesn't matter - * even in error unwind because reserve_byteoff is only used when - * returning to -this- activation. - */ - act->reserve_byteoff = 0; - - /* - * Manipulate valstack so that args are on the current bottom and the - * previous caller's 'this' binding (which is the value preceding the - * current bottom) is replaced with the new 'this' binding: - * - * [ ... this_old | (crud) func this_new arg1 ... argN ] - * --> [ ... this_new | arg1 ... argN ] - * - * For tail calling to work properly, the valstack bottom must not grow - * here; otherwise crud would accumulate on the valstack. - */ - - tv1 = thr->valstack_bottom - 1; - tv2 = thr->valstack_bottom + idx_func + 1; - DUK_ASSERT(tv1 >= thr->valstack && tv1 < thr->valstack_top); /* tv1 is -below- valstack_bottom */ - DUK_ASSERT(tv2 >= thr->valstack_bottom && tv2 < thr->valstack_top); - DUK_TVAL_SET_TVAL_UPDREF(thr, tv1, tv2); /* side effects */ - - idx_args = idx_func + 2; - duk_remove_n(thr, 0, idx_args); /* may be NORZ */ - - idx_func = 0; - DUK_UNREF(idx_func); /* really 'not applicable' anymore, should not be referenced after this */ - idx_args = 0; - - *out_nargs = ((duk_hcompfunc *) func)->nargs; - *out_nregs = ((duk_hcompfunc *) func)->nregs; - DUK_ASSERT(*out_nregs >= 0); - DUK_ASSERT(*out_nregs >= *out_nargs); - *out_vs_min_bytes = - entry_valstack_bottom_byteoff + sizeof(duk_tval) * ((duk_size_t) *out_nregs + DUK_VALSTACK_INTERNAL_EXTRA); - -#if defined(DUK_USE_NONSTD_FUNC_CALLER_PROPERTY) -#if defined(DUK_USE_TAILCALL) -#error incorrect options: tail calls enabled with function caller property -#endif - /* XXX: This doesn't actually work properly for tail calls, so - * tail calls are disabled when DUK_USE_NONSTD_FUNC_CALLER_PROPERTY - * is in use. - */ - duk__update_func_caller_prop(thr, func); -#endif - - /* [ ... this_new | arg1 ... argN ] */ - - return 1; -} -#endif /* DUK_USE_TAILCALL */ - -DUK_LOCAL void duk__call_setup_act_not_tailcall(duk_hthread *thr, - duk_small_uint_t call_flags, - duk_idx_t idx_func, - duk_hobject *func, - duk_size_t entry_valstack_bottom_byteoff, - duk_size_t entry_valstack_end_byteoff, - duk_idx_t *out_nargs, - duk_idx_t *out_nregs, - duk_size_t *out_vs_min_bytes, - duk_activation **out_act) { - duk_activation *act; - duk_activation *new_act; - - DUK_UNREF(entry_valstack_end_byteoff); - - DUK_DDD(DUK_DDDPRINT("not a tail call, pushing a new activation to callstack, to index %ld", (long) (thr->callstack_top))); - - duk__call_callstack_limit_check(thr); - new_act = duk_hthread_activation_alloc(thr); - DUK_ASSERT(new_act != NULL); - - act = thr->callstack_curr; - if (act != NULL) { - /* - * Update return value stack index of current activation (if any). - * - * Although it might seem this is not necessary (bytecode executor - * does this for ECMAScript-to-ECMAScript calls; other calls are - * handled here), this turns out to be necessary for handling yield - * and resume. For them, an ECMAScript-to-native call happens, and - * the ECMAScript call's retval_byteoff must be set for things to work. - */ - - act->retval_byteoff = entry_valstack_bottom_byteoff + (duk_size_t) idx_func * sizeof(duk_tval); - } - - new_act->parent = act; - thr->callstack_curr = new_act; - thr->callstack_top++; - act = new_act; - *out_act = act; - - DUK_ASSERT(thr->valstack_top > thr->valstack_bottom); /* at least effective 'this' */ - DUK_ASSERT(func == NULL || !DUK_HOBJECT_HAS_BOUNDFUNC(func)); - - act->cat = NULL; - - act->flags = 0; - if (call_flags & DUK_CALL_FLAG_CONSTRUCT) { - act->flags |= DUK_ACT_FLAG_CONSTRUCT; - } -#if defined(DUK_USE_ES6_PROXY) - if (call_flags & DUK_CALL_FLAG_CONSTRUCT_PROXY) { - act->flags |= DUK_ACT_FLAG_CONSTRUCT_PROXY; - } -#endif - if (call_flags & DUK_CALL_FLAG_DIRECT_EVAL) { - act->flags |= DUK_ACT_FLAG_DIRECT_EVAL; - } - - /* start of arguments: idx_func + 2. */ - act->func = func; /* NULL for lightfunc */ - if (DUK_LIKELY(func != NULL)) { - DUK_TVAL_SET_OBJECT(&act->tv_func, func); /* borrowed, no refcount */ - if (DUK_HOBJECT_HAS_STRICT(func)) { - act->flags |= DUK_ACT_FLAG_STRICT; - } - if (DUK_HOBJECT_IS_COMPFUNC(func)) { - *out_nargs = ((duk_hcompfunc *) func)->nargs; - *out_nregs = ((duk_hcompfunc *) func)->nregs; - DUK_ASSERT(*out_nregs >= 0); - DUK_ASSERT(*out_nregs >= *out_nargs); - *out_vs_min_bytes = - entry_valstack_bottom_byteoff + - sizeof(duk_tval) * ((duk_size_t) idx_func + 2U + (duk_size_t) *out_nregs + DUK_VALSTACK_INTERNAL_EXTRA); - } else { - /* True because of call target lookup checks. */ - DUK_ASSERT(DUK_HOBJECT_IS_NATFUNC(func)); - - *out_nargs = ((duk_hnatfunc *) func)->nargs; - *out_nregs = *out_nargs; - if (*out_nargs >= 0) { - *out_vs_min_bytes = - entry_valstack_bottom_byteoff + - sizeof(duk_tval) * ((duk_size_t) idx_func + 2U + (duk_size_t) *out_nregs + - DUK_VALSTACK_API_ENTRY_MINIMUM + DUK_VALSTACK_INTERNAL_EXTRA); - } else { - /* Vararg function. */ - duk_size_t valstack_top_byteoff = - (duk_size_t) ((duk_uint8_t *) thr->valstack_top - ((duk_uint8_t *) thr->valstack)); - *out_vs_min_bytes = valstack_top_byteoff + sizeof(duk_tval) * (DUK_VALSTACK_API_ENTRY_MINIMUM + - DUK_VALSTACK_INTERNAL_EXTRA); - } - } - } else { - duk_small_uint_t lf_flags; - duk_tval *tv_func; - - act->flags |= DUK_ACT_FLAG_STRICT; - - tv_func = DUK_GET_TVAL_POSIDX(thr, idx_func); - DUK_ASSERT(DUK_TVAL_IS_LIGHTFUNC(tv_func)); - DUK_TVAL_SET_TVAL(&act->tv_func, tv_func); /* borrowed, no refcount */ - - lf_flags = DUK_TVAL_GET_LIGHTFUNC_FLAGS(tv_func); - *out_nargs = DUK_LFUNC_FLAGS_GET_NARGS(lf_flags); - if (*out_nargs != DUK_LFUNC_NARGS_VARARGS) { - *out_vs_min_bytes = entry_valstack_bottom_byteoff + - sizeof(duk_tval) * ((duk_size_t) idx_func + 2U + (duk_size_t) *out_nargs + - DUK_VALSTACK_API_ENTRY_MINIMUM + DUK_VALSTACK_INTERNAL_EXTRA); - } else { - duk_size_t valstack_top_byteoff = - (duk_size_t) ((duk_uint8_t *) thr->valstack_top - ((duk_uint8_t *) thr->valstack)); - *out_vs_min_bytes = valstack_top_byteoff + - sizeof(duk_tval) * (DUK_VALSTACK_API_ENTRY_MINIMUM + DUK_VALSTACK_INTERNAL_EXTRA); - *out_nargs = -1; /* vararg */ - } - *out_nregs = *out_nargs; - } - - act->var_env = NULL; - act->lex_env = NULL; -#if defined(DUK_USE_NONSTD_FUNC_CALLER_PROPERTY) - act->prev_caller = NULL; -#endif - act->curr_pc = NULL; -#if defined(DUK_USE_DEBUGGER_SUPPORT) - act->prev_line = 0; -#endif - act->bottom_byteoff = entry_valstack_bottom_byteoff + sizeof(duk_tval) * ((duk_size_t) idx_func + 2U); -#if 0 - act->retval_byteoff = 0; /* topmost activation retval_byteoff is considered garbage, no need to init */ -#endif - /* Filled in when final reserve is known, dummy value doesn't matter - * even in error unwind because reserve_byteoff is only used when - * returning to -this- activation. - */ - act->reserve_byteoff = 0; /* filled in by caller */ - - /* XXX: Is this INCREF necessary? 'func' is always a borrowed - * reference reachable through the value stack? If changed, stack - * unwind code also needs to be fixed to match. - */ - DUK_HOBJECT_INCREF_ALLOWNULL(thr, func); /* act->func */ - -#if defined(DUK_USE_NONSTD_FUNC_CALLER_PROPERTY) - if (func) { - duk__update_func_caller_prop(thr, func); - } -#endif -} - -/* - * Environment setup. - */ - -DUK_LOCAL void duk__call_env_setup(duk_hthread *thr, duk_hobject *func, duk_activation *act, duk_idx_t idx_args) { - duk_hobject *env; - - DUK_ASSERT(func == NULL || !DUK_HOBJECT_HAS_BOUNDFUNC(func)); /* bound function has already been resolved */ - - if (DUK_LIKELY(func != NULL)) { - if (DUK_LIKELY(DUK_HOBJECT_HAS_NEWENV(func))) { - DUK_STATS_INC(thr->heap, stats_envrec_newenv); - if (DUK_LIKELY(!DUK_HOBJECT_HAS_CREATEARGS(func))) { - /* Use a new environment but there's no 'arguments' object; - * delayed environment initialization. This is the most - * common case. - */ - DUK_ASSERT(act->lex_env == NULL); - DUK_ASSERT(act->var_env == NULL); - } else { - /* Use a new environment and there's an 'arguments' object. - * We need to initialize it right now. - */ - - /* third arg: absolute index (to entire valstack) of bottom_byteoff of new activation */ - env = duk_create_activation_environment_record(thr, func, act->bottom_byteoff); - DUK_ASSERT(env != NULL); - - /* [ ... func this arg1 ... argN envobj ] */ - - DUK_ASSERT(DUK_HOBJECT_HAS_CREATEARGS(func)); - duk__handle_createargs_for_call(thr, func, env, idx_args); - - /* [ ... func this arg1 ... argN envobj ] */ - - act->lex_env = env; - act->var_env = env; - DUK_HOBJECT_INCREF(thr, env); - DUK_HOBJECT_INCREF(thr, env); /* XXX: incref by count (2) directly */ - duk_pop(thr); - } - } else { - /* Use existing env (e.g. for non-strict eval); cannot have - * an own 'arguments' object (but can refer to an existing one). - */ - - DUK_ASSERT(!DUK_HOBJECT_HAS_CREATEARGS(func)); - - DUK_STATS_INC(thr->heap, stats_envrec_oldenv); - duk__handle_oldenv_for_call(thr, func, act); - - DUK_ASSERT(act->lex_env != NULL); - DUK_ASSERT(act->var_env != NULL); - } - } else { - /* Lightfuncs are always native functions and have "newenv". */ - DUK_ASSERT(act->lex_env == NULL); - DUK_ASSERT(act->var_env == NULL); - DUK_STATS_INC(thr->heap, stats_envrec_newenv); - } -} - -/* - * Misc shared helpers. - */ - -/* Check thread state, update current thread. */ -DUK_LOCAL void duk__call_thread_state_update(duk_hthread *thr) { - DUK_ASSERT(thr != NULL); - - if (DUK_LIKELY(thr == thr->heap->curr_thread)) { - if (DUK_UNLIKELY(thr->state != DUK_HTHREAD_STATE_RUNNING)) { - /* Should actually never happen, but check anyway. */ - goto thread_state_error; - } - } else { - DUK_ASSERT(thr->heap->curr_thread == NULL || thr->heap->curr_thread->state == DUK_HTHREAD_STATE_RUNNING); - if (DUK_UNLIKELY(thr->state != DUK_HTHREAD_STATE_INACTIVE)) { - goto thread_state_error; - } - DUK_HEAP_SWITCH_THREAD(thr->heap, thr); - thr->state = DUK_HTHREAD_STATE_RUNNING; - - /* Multiple threads may be simultaneously in the RUNNING - * state, but not in the same "resume chain". - */ - } - DUK_ASSERT(thr->heap->curr_thread == thr); - DUK_ASSERT(thr->state == DUK_HTHREAD_STATE_RUNNING); - return; - -thread_state_error: - DUK_ERROR_FMT1(thr, DUK_ERR_TYPE_ERROR, "invalid thread state (%ld)", (long) thr->state); - DUK_WO_NORETURN(return;); -} - -/* - * Main unprotected call handler, handles: - * - * - All combinations of native/ECMAScript caller and native/ECMAScript - * target. - * - * - Optimized ECMAScript-to-ECMAScript call where call handling only - * sets up a new duk_activation but reuses an existing bytecode executor - * (the caller) without native recursion. - * - * - Tailcalls, where an activation is reused without increasing call - * stack (duk_activation) depth. - * - * - Setup for an initial Duktape.Thread.resume(). - * - * The call handler doesn't provide any protection guarantees, protected calls - * must be implemented e.g. by wrapping the call in a duk_safe_call(). - * Call setup may fail at any stage, even when the new activation is in - * place; the only guarantee is that the state is consistent for unwinding. - */ - -DUK_LOCAL duk_int_t duk__handle_call_raw(duk_hthread *thr, duk_idx_t idx_func, duk_small_uint_t call_flags) { -#if defined(DUK_USE_ASSERTIONS) - duk_activation *entry_act; - duk_size_t entry_callstack_top; -#endif - duk_size_t entry_valstack_bottom_byteoff; - duk_size_t entry_valstack_end_byteoff; - duk_int_t entry_call_recursion_depth; - duk_hthread *entry_curr_thread; - duk_uint_fast8_t entry_thread_state; - duk_instr_t **entry_ptr_curr_pc; - duk_idx_t idx_args; - duk_idx_t nargs; /* # argument registers target function wants (< 0 => "as is") */ - duk_idx_t nregs; /* # total registers target function wants on entry (< 0 => "as is") */ - duk_size_t vs_min_bytes; /* minimum value stack size (bytes) for handling call */ - duk_hobject *func; /* 'func' on stack (borrowed reference) */ - duk_activation *act; - duk_ret_t rc; - duk_small_uint_t use_tailcall; - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(thr->heap != NULL); - /* Asserts for heap->curr_thread omitted: it may be NULL, 'thr', or - * any other thread (e.g. when heap thread is used to run finalizers). - */ - DUK_CTX_ASSERT_VALID(thr); - DUK_ASSERT(duk_is_valid_index(thr, idx_func)); - DUK_ASSERT(idx_func >= 0); - - DUK_STATS_INC(thr->heap, stats_call_all); - - /* If a tail call: - * - an ECMAScript activation must be on top of the callstack - * - there cannot be any catch stack entries that would catch - * a return - */ -#if defined(DUK_USE_ASSERTIONS) - if (call_flags & DUK_CALL_FLAG_TAILCALL) { - duk_activation *tmp_act; - duk_catcher *tmp_cat; - - DUK_ASSERT(thr->callstack_top >= 1); - DUK_ASSERT(DUK_ACT_GET_FUNC(thr->callstack_curr) != NULL); - DUK_ASSERT(DUK_HOBJECT_IS_COMPFUNC(DUK_ACT_GET_FUNC(thr->callstack_curr))); - - /* No entry in the catch stack which would actually catch a - * throw can refer to the callstack entry being reused. - * There *can* be catch stack entries referring to the current - * callstack entry as long as they don't catch (e.g. label sites). - */ - - tmp_act = thr->callstack_curr; - for (tmp_cat = tmp_act->cat; tmp_cat != NULL; tmp_cat = tmp_cat->parent) { - DUK_ASSERT(DUK_CAT_GET_TYPE(tmp_cat) == DUK_CAT_TYPE_LABEL); /* a non-catching entry */ - } - } -#endif /* DUK_USE_ASSERTIONS */ - - /* - * Store entry state. - */ - -#if defined(DUK_USE_ASSERTIONS) - entry_act = thr->callstack_curr; - entry_callstack_top = thr->callstack_top; -#endif - entry_valstack_bottom_byteoff = (duk_size_t) ((duk_uint8_t *) thr->valstack_bottom - (duk_uint8_t *) thr->valstack); - entry_valstack_end_byteoff = (duk_size_t) ((duk_uint8_t *) thr->valstack_end - (duk_uint8_t *) thr->valstack); - entry_call_recursion_depth = thr->heap->call_recursion_depth; - entry_curr_thread = thr->heap->curr_thread; /* may be NULL if first call */ - entry_thread_state = thr->state; - entry_ptr_curr_pc = thr->ptr_curr_pc; /* may be NULL */ - - /* If thr->ptr_curr_pc is set, sync curr_pc to act->pc. Then NULL - * thr->ptr_curr_pc so that it's not accidentally used with an incorrect - * activation when side effects occur. - */ - duk_hthread_sync_and_null_currpc(thr); - DUK_ASSERT(thr->ptr_curr_pc == NULL); - - DUK_DD(DUK_DDPRINT("duk__handle_call_raw: thr=%p, idx_func=%ld, " - "call_flags=0x%08lx (constructor=%ld), " - "valstack_top=%ld, idx_func=%ld, idx_args=%ld, rec_depth=%ld/%ld, " - "entry_valstack_bottom_byteoff=%ld, entry_valstack_end_byteoff=%ld, " - "entry_call_recursion_depth=%ld, " - "entry_curr_thread=%p, entry_thread_state=%ld", - (void *) thr, - (long) idx_func, - (unsigned long) call_flags, - (long) ((call_flags & DUK_CALL_FLAG_CONSTRUCT) != 0 ? 1 : 0), - (long) duk_get_top(thr), - (long) idx_func, - (long) (idx_func + 2), - (long) thr->heap->call_recursion_depth, - (long) thr->heap->call_recursion_limit, - (long) entry_valstack_bottom_byteoff, - (long) entry_valstack_end_byteoff, - (long) entry_call_recursion_depth, - (void *) entry_curr_thread, - (long) entry_thread_state)); - - /* - * Thread state check and book-keeping. - */ - - duk__call_thread_state_update(thr); - - /* - * Increase call recursion depth as early as possible so that if we - * enter a recursive call for any reason there's a backstop to native - * recursion. This can happen e.g. for almost any property read - * because it may cause a getter call or a Proxy trap (GC and finalizers - * are not an issue because they are not recursive). If we end up - * doing an Ecma-to-Ecma call, revert the increase. (See GH-2032.) - * - * For similar reasons, ensure there is a known value stack spare - * even before we actually prepare the value stack for the target - * function. If this isn't done, early recursion may consume the - * value stack space. - * - * XXX: Should bump yield preventcount early, for the same reason. - */ - - duk__call_c_recursion_limit_check(thr); - thr->heap->call_recursion_depth++; - duk_require_stack(thr, DUK__CALL_HANDLING_REQUIRE_STACK); - - /* - * Resolve final target function; handle bound functions and special - * functions like .call() and .apply(). Also figure out the effective - * 'this' binding, which replaces the current value at idx_func + 1. - */ - - if (DUK_LIKELY(duk__resolve_target_fastpath_check(thr, idx_func, &func, call_flags) != 0U)) { - DUK_DDD(DUK_DDDPRINT("fast path target resolve")); - } else { - DUK_DDD(DUK_DDDPRINT("slow path target resolve")); - func = duk__resolve_target_func_and_this_binding(thr, idx_func, &call_flags); - } - DUK_ASSERT(duk_get_top(thr) - idx_func >= 2); /* at least func and this present */ - - DUK_ASSERT(func == NULL || !DUK_HOBJECT_HAS_BOUNDFUNC(func)); - DUK_ASSERT(func == NULL || (DUK_HOBJECT_IS_COMPFUNC(func) || DUK_HOBJECT_IS_NATFUNC(func))); - - /* [ ... func this arg1 ... argN ] */ - - /* - * Setup a preliminary activation and figure out nargs/nregs and - * value stack minimum size. - * - * Don't touch valstack_bottom or valstack_top yet so that Duktape API - * calls work normally. - * - * Because 'act' is not zeroed, all fields must be filled in. - */ - - /* Should not be necessary, but initialize to silence warnings. */ - act = NULL; - nargs = 0; - nregs = 0; - vs_min_bytes = 0; - -#if defined(DUK_USE_TAILCALL) - use_tailcall = (call_flags & DUK_CALL_FLAG_TAILCALL); - if (use_tailcall) { - use_tailcall = duk__call_setup_act_attempt_tailcall(thr, - call_flags, - idx_func, - func, - entry_valstack_bottom_byteoff, - entry_valstack_end_byteoff, - &nargs, - &nregs, - &vs_min_bytes, - &act); - } -#else - DUK_ASSERT((call_flags & DUK_CALL_FLAG_TAILCALL) == 0); /* compiler ensures this */ - use_tailcall = 0; -#endif - - if (use_tailcall) { - idx_args = 0; - DUK_STATS_INC(thr->heap, stats_call_tailcall); - } else { - duk__call_setup_act_not_tailcall(thr, - call_flags, - idx_func, - func, - entry_valstack_bottom_byteoff, - entry_valstack_end_byteoff, - &nargs, - &nregs, - &vs_min_bytes, - &act); - idx_args = idx_func + 2; - } - /* After this point idx_func is no longer valid for tailcalls. */ - - DUK_ASSERT(act != NULL); - - /* [ ... func this arg1 ... argN ] */ - - /* - * Grow value stack to required size before env setup. This - * must happen before env setup to handle some corner cases - * correctly, e.g. test-bug-scope-segv-gh2448.js. - */ - - duk_valstack_grow_check_throw(thr, vs_min_bytes); - act->reserve_byteoff = (duk_size_t) ((duk_uint8_t *) thr->valstack_end - (duk_uint8_t *) thr->valstack); - - /* - * Environment record creation and 'arguments' object creation. - * Named function expression name binding is handled by the - * compiler; the compiled function's parent env will contain - * the (immutable) binding already. - * - * This handling is now identical for C and ECMAScript functions. - * C functions always have the 'NEWENV' flag set, so their - * environment record initialization is delayed (which is good). - * - * Delayed creation (on demand) is handled in duk_js_var.c. - */ - - duk__call_env_setup(thr, func, act, idx_args); - - /* [ ... func this arg1 ... argN ] */ - - /* - * Setup value stack: clamp to 'nargs', fill up to 'nregs', - * ensure value stack size matches target requirements, and - * switch value stack bottom. Valstack top is kept. - */ - - if (use_tailcall) { - DUK_ASSERT(nregs >= 0); - DUK_ASSERT(nregs >= nargs); - duk_set_top_and_wipe(thr, nregs, nargs); - } else { - if (nregs >= 0) { - DUK_ASSERT(nregs >= nargs); - duk_set_top_and_wipe(thr, idx_func + 2 + nregs, idx_func + 2 + nargs); - } else { - ; - } - thr->valstack_bottom = thr->valstack_bottom + idx_func + 2; - } - DUK_ASSERT(thr->valstack_bottom >= thr->valstack); - DUK_ASSERT(thr->valstack_top >= thr->valstack_bottom); - DUK_ASSERT(thr->valstack_end >= thr->valstack_top); - - /* - * Make the actual call. For Ecma-to-Ecma calls detect that - * setup is complete, then return with a status code that allows - * the caller to reuse the running executor. - */ - - if (func != NULL && DUK_HOBJECT_IS_COMPFUNC(func)) { - /* - * ECMAScript call. - */ - - DUK_ASSERT(func != NULL); - DUK_ASSERT(DUK_HOBJECT_HAS_COMPFUNC(func)); - act->curr_pc = DUK_HCOMPFUNC_GET_CODE_BASE(thr->heap, (duk_hcompfunc *) func); - - if (call_flags & DUK_CALL_FLAG_ALLOW_ECMATOECMA) { - DUK_DD(DUK_DDPRINT("avoid native call, use existing executor")); - DUK_STATS_INC(thr->heap, stats_call_ecmatoecma); - DUK_ASSERT((act->flags & DUK_ACT_FLAG_PREVENT_YIELD) == 0); - DUK_REFZERO_CHECK_FAST(thr); - DUK_ASSERT(thr->ptr_curr_pc == NULL); - thr->heap->call_recursion_depth--; /* No recursion increase for this case. */ - return 1; /* 1=reuse executor */ - } - DUK_ASSERT(use_tailcall == 0); - - /* duk_hthread_activation_unwind_norz() will decrease this on unwind */ - DUK_ASSERT((act->flags & DUK_ACT_FLAG_PREVENT_YIELD) == 0); - act->flags |= DUK_ACT_FLAG_PREVENT_YIELD; - thr->callstack_preventcount++; - - /* [ ... func this | arg1 ... argN ] ('this' must precede new bottom) */ - - /* - * Bytecode executor call. - * - * Execute bytecode, handling any recursive function calls and - * thread resumptions. Returns when execution would return from - * the entry level activation. When the executor returns, a - * single return value is left on the stack top. - * - * The only possible longjmp() is an error (DUK_LJ_TYPE_THROW), - * other types are handled internally by the executor. - */ - - /* thr->ptr_curr_pc is set by bytecode executor early on entry */ - DUK_ASSERT(thr->ptr_curr_pc == NULL); - DUK_DDD(DUK_DDDPRINT("entering bytecode execution")); - duk_js_execute_bytecode(thr); - DUK_DDD(DUK_DDDPRINT("returned from bytecode execution")); - } else { - /* - * Native call. - */ - - DUK_ASSERT(func == NULL || ((duk_hnatfunc *) func)->func != NULL); - DUK_ASSERT(use_tailcall == 0); - - /* [ ... func this | arg1 ... argN ] ('this' must precede new bottom) */ - - /* duk_hthread_activation_unwind_norz() will decrease this on unwind */ - DUK_ASSERT((act->flags & DUK_ACT_FLAG_PREVENT_YIELD) == 0); - act->flags |= DUK_ACT_FLAG_PREVENT_YIELD; - thr->callstack_preventcount++; - - /* For native calls must be NULL so we don't sync back */ - DUK_ASSERT(thr->ptr_curr_pc == NULL); - - /* XXX: native funcptr could come out of call setup. */ - if (func) { - rc = ((duk_hnatfunc *) func)->func(thr); - } else { - duk_tval *tv_func; - duk_c_function funcptr; - - tv_func = &act->tv_func; - DUK_ASSERT(DUK_TVAL_IS_LIGHTFUNC(tv_func)); - funcptr = DUK_TVAL_GET_LIGHTFUNC_FUNCPTR(tv_func); - rc = funcptr(thr); - } - - /* Automatic error throwing, retval check. */ - - if (rc == 0) { - DUK_ASSERT(thr->valstack < thr->valstack_end); - DUK_ASSERT(DUK_TVAL_IS_UNDEFINED(thr->valstack_top)); - thr->valstack_top++; - } else if (rc == 1) { - ; - } else if (rc < 0) { - duk_error_throw_from_negative_rc(thr, rc); - DUK_WO_NORETURN(return 0;); - } else { - DUK_ERROR_TYPE(thr, DUK_STR_INVALID_CFUNC_RC); - DUK_WO_NORETURN(return 0;); - } - } - DUK_ASSERT(thr->ptr_curr_pc == NULL); - DUK_ASSERT(use_tailcall == 0); - - /* - * Constructor call post processing. - */ - -#if defined(DUK_USE_ES6_PROXY) - if (call_flags & (DUK_CALL_FLAG_CONSTRUCT | DUK_CALL_FLAG_CONSTRUCT_PROXY)) { - duk_call_construct_postprocess(thr, call_flags & DUK_CALL_FLAG_CONSTRUCT_PROXY); - } -#else - if (call_flags & DUK_CALL_FLAG_CONSTRUCT) { - duk_call_construct_postprocess(thr, 0); - } -#endif - - /* - * Unwind, restore valstack bottom and other book-keeping. - */ - - DUK_ASSERT(thr->callstack_curr != NULL); - DUK_ASSERT(thr->callstack_curr->parent == entry_act); - DUK_ASSERT(thr->callstack_top == entry_callstack_top + 1); - duk_hthread_activation_unwind_norz(thr); - DUK_ASSERT(thr->callstack_curr == entry_act); - DUK_ASSERT(thr->callstack_top == entry_callstack_top); - - thr->valstack_bottom = (duk_tval *) (void *) ((duk_uint8_t *) thr->valstack + entry_valstack_bottom_byteoff); - /* keep current valstack_top */ - DUK_ASSERT(thr->valstack_bottom >= thr->valstack); - DUK_ASSERT(thr->valstack_top >= thr->valstack_bottom); - DUK_ASSERT(thr->valstack_end >= thr->valstack_top); - DUK_ASSERT(thr->valstack_top - thr->valstack_bottom >= idx_func + 1); - - /* Return value handling. */ - - /* [ ... func this (crud) retval ] */ - - { - duk_tval *tv_ret; - duk_tval *tv_funret; - - tv_ret = thr->valstack_bottom + idx_func; - tv_funret = thr->valstack_top - 1; -#if defined(DUK_USE_FASTINT) - /* Explicit check for fastint downgrade. */ - DUK_TVAL_CHKFAST_INPLACE_FAST(tv_funret); -#endif - DUK_TVAL_SET_TVAL_UPDREF(thr, tv_ret, tv_funret); /* side effects */ - } - - duk_set_top_unsafe(thr, idx_func + 1); - - /* [ ... retval ] */ - - /* Restore caller's value stack reserve (cannot fail). */ - DUK_ASSERT((duk_uint8_t *) thr->valstack + entry_valstack_end_byteoff >= (duk_uint8_t *) thr->valstack_top); - DUK_ASSERT((duk_uint8_t *) thr->valstack + entry_valstack_end_byteoff <= (duk_uint8_t *) thr->valstack_alloc_end); - thr->valstack_end = (duk_tval *) (void *) ((duk_uint8_t *) thr->valstack + entry_valstack_end_byteoff); - - /* XXX: Trial value stack shrink would be OK here, but we'd need - * to prevent side effects of the potential realloc. - */ - - /* Restore entry thread executor curr_pc stack frame pointer. */ - thr->ptr_curr_pc = entry_ptr_curr_pc; - - DUK_HEAP_SWITCH_THREAD(thr->heap, entry_curr_thread); /* may be NULL */ - thr->state = (duk_uint8_t) entry_thread_state; - - /* Disabled assert: triggered with some torture tests. */ -#if 0 - DUK_ASSERT((thr->state == DUK_HTHREAD_STATE_INACTIVE && thr->heap->curr_thread == NULL) || /* first call */ - (thr->state == DUK_HTHREAD_STATE_INACTIVE && thr->heap->curr_thread != NULL) || /* other call */ - (thr->state == DUK_HTHREAD_STATE_RUNNING && thr->heap->curr_thread == thr)); /* current thread */ -#endif - - thr->heap->call_recursion_depth = entry_call_recursion_depth; - - /* If the debugger is active we need to force an interrupt so that - * debugger breakpoints are rechecked. This is important for function - * calls caused by side effects (e.g. when doing a DUK_OP_GETPROP), see - * GH-303. Only needed for success path, error path always causes a - * breakpoint recheck in the executor. It would be enough to set this - * only when returning to an ECMAScript activation, but setting the flag - * on every return should have no ill effect. - */ -#if defined(DUK_USE_DEBUGGER_SUPPORT) - if (duk_debug_is_attached(thr->heap)) { - DUK_DD(DUK_DDPRINT("returning with debugger enabled, force interrupt")); - DUK_ASSERT(thr->interrupt_counter <= thr->interrupt_init); - thr->interrupt_init -= thr->interrupt_counter; - thr->interrupt_counter = 0; - thr->heap->dbg_force_restart = 1; - } -#endif - -#if defined(DUK_USE_INTERRUPT_COUNTER) && defined(DUK_USE_DEBUG) - duk__interrupt_fixup(thr, entry_curr_thread); -#endif - - /* Restored by success path. */ - DUK_ASSERT(thr->heap->call_recursion_depth == entry_call_recursion_depth); - DUK_ASSERT(thr->ptr_curr_pc == entry_ptr_curr_pc); - DUK_ASSERT_LJSTATE_UNSET(thr->heap); - - DUK_REFZERO_CHECK_FAST(thr); - - return 0; /* 0=call handled inline */ -} - -DUK_INTERNAL duk_int_t duk_handle_call_unprotected_nargs(duk_hthread *thr, duk_idx_t nargs, duk_small_uint_t call_flags) { - duk_idx_t idx_func; - DUK_ASSERT(duk_get_top(thr) >= nargs + 2); - idx_func = duk_get_top(thr) - (nargs + 2); - DUK_ASSERT(idx_func >= 0); - return duk_handle_call_unprotected(thr, idx_func, call_flags); -} - -DUK_INTERNAL duk_int_t duk_handle_call_unprotected(duk_hthread *thr, duk_idx_t idx_func, duk_small_uint_t call_flags) { - DUK_ASSERT(duk_is_valid_index(thr, idx_func)); - DUK_ASSERT(idx_func >= 0); - return duk__handle_call_raw(thr, idx_func, call_flags); -} - -/* - * duk_handle_safe_call(): make a "C protected call" within the - * current activation. - * - * The allowed thread states for making a call are the same as for - * duk_handle_call_protected(). - * - * Even though this call is protected, errors are thrown for insane arguments - * and may result in a fatal error unless there's another protected call which - * catches such errors. - * - * The error handling path should be error free, even for out-of-memory - * errors, to ensure safe sandboxing. (As of Duktape 2.2.0 this is not - * yet the case for environment closing which may run out of memory, see - * XXX notes below.) - */ - -DUK_LOCAL void duk__handle_safe_call_inner(duk_hthread *thr, - duk_safe_call_function func, - void *udata, -#if defined(DUK_USE_ASSERTIONS) - duk_size_t entry_valstack_bottom_byteoff, - duk_size_t entry_callstack_top, -#endif - duk_hthread *entry_curr_thread, - duk_uint_fast8_t entry_thread_state, - duk_idx_t idx_retbase, - duk_idx_t num_stack_rets) { - duk_ret_t rc; - - DUK_ASSERT(thr != NULL); - DUK_CTX_ASSERT_VALID(thr); - - /* - * Thread state check and book-keeping. - */ - - duk__call_thread_state_update(thr); - - /* - * Recursion limit check. - */ - - duk__call_c_recursion_limit_check(thr); - thr->heap->call_recursion_depth++; - - /* - * Make the C call. - */ - - rc = func(thr, udata); - - DUK_DDD(DUK_DDDPRINT("safe_call, func rc=%ld", (long) rc)); - - /* - * Valstack manipulation for results. - */ - - /* we're running inside the caller's activation, so no change in call/catch stack or valstack bottom */ - DUK_ASSERT(thr->callstack_top == entry_callstack_top); - DUK_ASSERT(thr->valstack_bottom >= thr->valstack); - DUK_ASSERT((duk_size_t) ((duk_uint8_t *) thr->valstack_bottom - (duk_uint8_t *) thr->valstack) == - entry_valstack_bottom_byteoff); - DUK_ASSERT(thr->valstack_top >= thr->valstack_bottom); - DUK_ASSERT(thr->valstack_end >= thr->valstack_top); - - if (DUK_UNLIKELY(rc < 0)) { - duk_error_throw_from_negative_rc(thr, rc); - DUK_WO_NORETURN(return;); - } - DUK_ASSERT(rc >= 0); - - duk__safe_call_adjust_valstack(thr, idx_retbase, num_stack_rets, rc); /* throws for insane rc */ - - DUK_HEAP_SWITCH_THREAD(thr->heap, entry_curr_thread); /* may be NULL */ - thr->state = (duk_uint8_t) entry_thread_state; -} - -DUK_LOCAL void duk__handle_safe_call_error(duk_hthread *thr, - duk_activation *entry_act, -#if defined(DUK_USE_ASSERTIONS) - duk_size_t entry_callstack_top, -#endif - duk_hthread *entry_curr_thread, - duk_uint_fast8_t entry_thread_state, - duk_idx_t idx_retbase, - duk_idx_t num_stack_rets, - duk_size_t entry_valstack_bottom_byteoff, - duk_jmpbuf *old_jmpbuf_ptr) { - DUK_ASSERT(thr != NULL); - DUK_CTX_ASSERT_VALID(thr); - - /* - * Error during call. The error value is at heap->lj.value1. - * - * The very first thing we do is restore the previous setjmp catcher. - * This means that any error in error handling will propagate outwards - * instead of causing a setjmp() re-entry above. - */ - - DUK_DDD(DUK_DDDPRINT("error caught during protected duk_handle_safe_call()")); - - /* Other longjmp types are handled by executor before propagating - * the error here. - */ - DUK_ASSERT(thr->heap->lj.type == DUK_LJ_TYPE_THROW); - DUK_ASSERT_LJSTATE_SET(thr->heap); - - /* Either pointer may be NULL (at entry), so don't assert. */ - thr->heap->lj.jmpbuf_ptr = old_jmpbuf_ptr; - - /* XXX: callstack unwind may now throw an error when closing - * scopes; this is a sandboxing issue, described in: - * https://github.com/svaarala/duktape/issues/476 - */ - /* XXX: "unwind to" primitive? */ - - DUK_ASSERT(thr->callstack_top >= entry_callstack_top); - while (thr->callstack_curr != entry_act) { - DUK_ASSERT(thr->callstack_curr != NULL); - duk_hthread_activation_unwind_norz(thr); - } - DUK_ASSERT(thr->callstack_top == entry_callstack_top); - - /* Switch active thread before any side effects to avoid a - * dangling curr_thread pointer. - */ - DUK_HEAP_SWITCH_THREAD(thr->heap, entry_curr_thread); /* may be NULL */ - thr->state = (duk_uint8_t) entry_thread_state; - - DUK_ASSERT(thr->heap->curr_thread == entry_curr_thread); - DUK_ASSERT(thr->state == entry_thread_state); - - /* Restore valstack bottom. */ - thr->valstack_bottom = (duk_tval *) (void *) ((duk_uint8_t *) thr->valstack + entry_valstack_bottom_byteoff); - - /* [ ... | (crud) ] */ - - /* XXX: ensure space in valstack (now relies on internal reserve)? */ - duk_push_tval(thr, &thr->heap->lj.value1); - - /* [ ... | (crud) errobj ] */ - - DUK_ASSERT(duk_get_top(thr) >= 1); /* at least errobj must be on stack */ - - duk__safe_call_adjust_valstack(thr, idx_retbase, num_stack_rets, 1); /* 1 = num actual 'return values' */ - - /* [ ... | ] or [ ... | errobj (M * undefined)] where M = num_stack_rets - 1 */ - - /* Reset longjmp state. */ - thr->heap->lj.type = DUK_LJ_TYPE_UNKNOWN; - thr->heap->lj.iserror = 0; - DUK_TVAL_SET_UNDEFINED_UPDREF_NORZ(thr, &thr->heap->lj.value1); - DUK_TVAL_SET_UNDEFINED_UPDREF_NORZ(thr, &thr->heap->lj.value2); - - /* Error handling complete, remove side effect protections. Caller - * will process pending finalizers. - */ -#if defined(DUK_USE_ASSERTIONS) - DUK_ASSERT(thr->heap->error_not_allowed == 1); - thr->heap->error_not_allowed = 0; -#endif - DUK_ASSERT(thr->heap->pf_prevent_count > 0); - thr->heap->pf_prevent_count--; - DUK_DD(DUK_DDPRINT("safe call error handled, pf_prevent_count updated to %ld", (long) thr->heap->pf_prevent_count)); - - /* thr->ptr_curr_pc is restored by - * duk__handle_safe_call_shared_unwind() which is also used for - * success path. - */ -} - -DUK_LOCAL void duk__handle_safe_call_shared_unwind(duk_hthread *thr, - duk_idx_t idx_retbase, - duk_idx_t num_stack_rets, -#if defined(DUK_USE_ASSERTIONS) - duk_size_t entry_callstack_top, -#endif - duk_int_t entry_call_recursion_depth, - duk_hthread *entry_curr_thread, - duk_instr_t **entry_ptr_curr_pc) { - DUK_ASSERT(thr != NULL); - DUK_CTX_ASSERT_VALID(thr); - DUK_UNREF(idx_retbase); - DUK_UNREF(num_stack_rets); - DUK_UNREF(entry_curr_thread); - - DUK_ASSERT(thr->callstack_top == entry_callstack_top); - - /* Restore entry thread executor curr_pc stack frame pointer. - * XXX: would be enough to do in error path only, should nest - * cleanly in success path. - */ - thr->ptr_curr_pc = entry_ptr_curr_pc; - - thr->heap->call_recursion_depth = entry_call_recursion_depth; - - /* stack discipline consistency check */ - DUK_ASSERT(duk_get_top(thr) == idx_retbase + num_stack_rets); - - /* A debugger forced interrupt check is not needed here, as - * problematic safe calls are not caused by side effects. - */ - -#if defined(DUK_USE_INTERRUPT_COUNTER) && defined(DUK_USE_DEBUG) - duk__interrupt_fixup(thr, entry_curr_thread); -#endif -} - -DUK_INTERNAL duk_int_t duk_handle_safe_call(duk_hthread *thr, - duk_safe_call_function func, - void *udata, - duk_idx_t num_stack_args, - duk_idx_t num_stack_rets) { - duk_activation *entry_act; - duk_size_t entry_valstack_bottom_byteoff; -#if defined(DUK_USE_ASSERTIONS) - duk_size_t entry_valstack_end_byteoff; - duk_size_t entry_callstack_top; - duk_size_t entry_callstack_preventcount; -#endif - duk_int_t entry_call_recursion_depth; - duk_hthread *entry_curr_thread; - duk_uint_fast8_t entry_thread_state; - duk_instr_t **entry_ptr_curr_pc; - duk_jmpbuf *old_jmpbuf_ptr = NULL; - duk_jmpbuf our_jmpbuf; - duk_idx_t idx_retbase; - duk_int_t retval; - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(duk_get_top(thr) >= num_stack_args); /* Caller ensures. */ - - DUK_STATS_INC(thr->heap, stats_safecall_all); - - /* Value stack reserve handling: safe call assumes caller has reserved - * space for nrets (assuming optimal unwind processing). Value stack - * reserve is not stored/restored as for normal calls because a safe - * call conceptually happens in the same activation. - */ - - /* Careful with indices like '-x'; if 'x' is zero, it refers to bottom */ - entry_act = thr->callstack_curr; - entry_valstack_bottom_byteoff = (duk_size_t) ((duk_uint8_t *) thr->valstack_bottom - (duk_uint8_t *) thr->valstack); -#if defined(DUK_USE_ASSERTIONS) - entry_valstack_end_byteoff = (duk_size_t) ((duk_uint8_t *) thr->valstack_end - (duk_uint8_t *) thr->valstack); - entry_callstack_top = thr->callstack_top; - entry_callstack_preventcount = thr->callstack_preventcount; -#endif - entry_call_recursion_depth = thr->heap->call_recursion_depth; - entry_curr_thread = thr->heap->curr_thread; /* may be NULL if first call */ - entry_thread_state = thr->state; - entry_ptr_curr_pc = thr->ptr_curr_pc; /* may be NULL */ - idx_retbase = duk_get_top(thr) - num_stack_args; /* not a valid stack index if num_stack_args == 0 */ - DUK_ASSERT(idx_retbase >= 0); - - DUK_ASSERT((duk_idx_t) (thr->valstack_top - thr->valstack_bottom) >= num_stack_args); /* Caller ensures. */ - DUK_ASSERT((duk_idx_t) (thr->valstack_end - (thr->valstack_bottom + idx_retbase)) >= num_stack_rets); /* Caller ensures. */ - - /* Cannot portably debug print a function pointer, hence 'func' not printed! */ - DUK_DD(DUK_DDPRINT("duk_handle_safe_call: thr=%p, num_stack_args=%ld, num_stack_rets=%ld, " - "valstack_top=%ld, idx_retbase=%ld, rec_depth=%ld/%ld, " - "entry_act=%p, entry_valstack_bottom_byteoff=%ld, entry_call_recursion_depth=%ld, " - "entry_curr_thread=%p, entry_thread_state=%ld", - (void *) thr, - (long) num_stack_args, - (long) num_stack_rets, - (long) duk_get_top(thr), - (long) idx_retbase, - (long) thr->heap->call_recursion_depth, - (long) thr->heap->call_recursion_limit, - (void *) entry_act, - (long) entry_valstack_bottom_byteoff, - (long) entry_call_recursion_depth, - (void *) entry_curr_thread, - (long) entry_thread_state)); - - /* Setjmp catchpoint setup. */ - old_jmpbuf_ptr = thr->heap->lj.jmpbuf_ptr; - thr->heap->lj.jmpbuf_ptr = &our_jmpbuf; - - /* Prevent yields for the duration of the safe call. This only - * matters if the executor makes safe calls to functions that - * yield, this doesn't currently happen. - */ - thr->callstack_preventcount++; - -#if defined(DUK_USE_CPP_EXCEPTIONS) - try { -#else - DUK_ASSERT(thr->heap->lj.jmpbuf_ptr == &our_jmpbuf); - if (DUK_SETJMP(our_jmpbuf.jb) == 0) { - /* Success path. */ -#endif - DUK_DDD(DUK_DDDPRINT("safe_call setjmp catchpoint setup complete")); - - duk__handle_safe_call_inner(thr, - func, - udata, -#if defined(DUK_USE_ASSERTIONS) - entry_valstack_bottom_byteoff, - entry_callstack_top, -#endif - entry_curr_thread, - entry_thread_state, - idx_retbase, - num_stack_rets); - - DUK_STATS_INC(thr->heap, stats_safecall_nothrow); - - /* Either pointer may be NULL (at entry), so don't assert */ - thr->heap->lj.jmpbuf_ptr = old_jmpbuf_ptr; - - /* If calls happen inside the safe call, these are restored by - * whatever calls are made. Reserve cannot decrease. - */ - DUK_ASSERT(thr->callstack_curr == entry_act); - DUK_ASSERT((duk_size_t) ((duk_uint8_t *) thr->valstack_end - (duk_uint8_t *) thr->valstack) >= - entry_valstack_end_byteoff); - - retval = DUK_EXEC_SUCCESS; -#if defined(DUK_USE_CPP_EXCEPTIONS) - } catch (duk_internal_exception &exc) { - DUK_UNREF(exc); -#else - } else { - /* Error path. */ -#endif - DUK_ASSERT((duk_size_t) ((duk_uint8_t *) thr->valstack_end - (duk_uint8_t *) thr->valstack) >= - entry_valstack_end_byteoff); - - DUK_STATS_INC(thr->heap, stats_safecall_throw); - - duk__handle_safe_call_error(thr, - entry_act, -#if defined(DUK_USE_ASSERTIONS) - entry_callstack_top, -#endif - entry_curr_thread, - entry_thread_state, - idx_retbase, - num_stack_rets, - entry_valstack_bottom_byteoff, - old_jmpbuf_ptr); - - retval = DUK_EXEC_ERROR; - } -#if defined(DUK_USE_CPP_EXCEPTIONS) - catch (duk_fatal_exception &exc) { - DUK_D(DUK_DPRINT("rethrow duk_fatal_exception")); - DUK_UNREF(exc); - throw; - } catch (std::exception &exc) { - const char *what = exc.what(); - DUK_ASSERT((duk_size_t) ((duk_uint8_t *) thr->valstack_end - (duk_uint8_t *) thr->valstack) >= - entry_valstack_end_byteoff); - DUK_STATS_INC(thr->heap, stats_safecall_throw); - if (!what) { - what = "unknown"; - } - DUK_D(DUK_DPRINT("unexpected c++ std::exception (perhaps thrown by user code)")); - try { - DUK_ERROR_FMT1(thr, - DUK_ERR_TYPE_ERROR, - "caught invalid c++ std::exception '%s' (perhaps thrown by user code)", - what); - DUK_WO_NORETURN(return 0;); - } catch (duk_internal_exception exc) { - DUK_D(DUK_DPRINT("caught api error thrown from unexpected c++ std::exception")); - DUK_UNREF(exc); - duk__handle_safe_call_error(thr, - entry_act, -#if defined(DUK_USE_ASSERTIONS) - entry_callstack_top, -#endif - entry_curr_thread, - entry_thread_state, - idx_retbase, - num_stack_rets, - entry_valstack_bottom_byteoff, - old_jmpbuf_ptr); - retval = DUK_EXEC_ERROR; - } - } catch (...) { - DUK_D(DUK_DPRINT("unexpected c++ exception (perhaps thrown by user code)")); - DUK_ASSERT((duk_size_t) ((duk_uint8_t *) thr->valstack_end - (duk_uint8_t *) thr->valstack) >= - entry_valstack_end_byteoff); - DUK_STATS_INC(thr->heap, stats_safecall_throw); - try { - DUK_ERROR_TYPE(thr, "caught invalid c++ exception (perhaps thrown by user code)"); - DUK_WO_NORETURN(return 0;); - } catch (duk_internal_exception exc) { - DUK_D(DUK_DPRINT("caught api error thrown from unexpected c++ exception")); - DUK_UNREF(exc); - duk__handle_safe_call_error(thr, - entry_act, -#if defined(DUK_USE_ASSERTIONS) - entry_callstack_top, -#endif - entry_curr_thread, - entry_thread_state, - idx_retbase, - num_stack_rets, - entry_valstack_bottom_byteoff, - old_jmpbuf_ptr); - retval = DUK_EXEC_ERROR; - } - } -#endif - - DUK_ASSERT(thr->heap->lj.jmpbuf_ptr == old_jmpbuf_ptr); /* success/error path both do this */ - - DUK_ASSERT_LJSTATE_UNSET(thr->heap); - - DUK_ASSERT((duk_size_t) ((duk_uint8_t *) thr->valstack_end - (duk_uint8_t *) thr->valstack) >= entry_valstack_end_byteoff); - duk__handle_safe_call_shared_unwind(thr, - idx_retbase, - num_stack_rets, -#if defined(DUK_USE_ASSERTIONS) - entry_callstack_top, -#endif - entry_call_recursion_depth, - entry_curr_thread, - entry_ptr_curr_pc); - - /* Restore preventcount. */ - thr->callstack_preventcount--; - DUK_ASSERT(thr->callstack_preventcount == entry_callstack_preventcount); - - /* Final asserts. */ - DUK_ASSERT(thr->callstack_curr == entry_act); - DUK_ASSERT((duk_size_t) ((duk_uint8_t *) thr->valstack_bottom - (duk_uint8_t *) thr->valstack) == - entry_valstack_bottom_byteoff); - DUK_ASSERT((duk_size_t) ((duk_uint8_t *) thr->valstack_end - (duk_uint8_t *) thr->valstack) >= entry_valstack_end_byteoff); - DUK_ASSERT(thr->callstack_top == entry_callstack_top); - DUK_ASSERT(thr->heap->call_recursion_depth == entry_call_recursion_depth); - DUK_ASSERT(thr->heap->curr_thread == entry_curr_thread); - DUK_ASSERT(thr->state == entry_thread_state); - DUK_ASSERT(thr->ptr_curr_pc == entry_ptr_curr_pc); - DUK_ASSERT(duk_get_top(thr) == idx_retbase + num_stack_rets); - DUK_ASSERT_LJSTATE_UNSET(thr->heap); - - /* Pending side effects. */ - DUK_REFZERO_CHECK_FAST(thr); - - return retval; -} - -/* - * Property-based call (foo.noSuch()) error setup: replace target function - * on stack top with a hidden Symbol tagged non-callable wrapper object - * holding the error. The error gets thrown in call handling at the - * proper spot to follow ECMAScript semantics. - */ - -#if defined(DUK_USE_VERBOSE_ERRORS) -DUK_INTERNAL DUK_NOINLINE DUK_COLD void duk_call_setup_propcall_error(duk_hthread *thr, duk_tval *tv_base, duk_tval *tv_key) { - const char *str_targ, *str_key, *str_base; - duk_idx_t entry_top; - - entry_top = duk_get_top(thr); - - /* [ target ] */ - - /* Must stabilize pointers first. tv_targ is already on stack top. */ - duk_push_tval(thr, tv_base); - duk_push_tval(thr, tv_key); - - DUK_GC_TORTURE(thr->heap); - - duk_push_bare_object(thr); - - /* [ target base key {} ] */ - - /* We only push a wrapped error, replacing the call target (at - * idx_func) with the error to ensure side effects come out - * correctly: - * - Property read - * - Call argument evaluation - * - Callability check and error thrown - * - * A hidden Symbol on the wrapper object pushed above is used by - * call handling to figure out the error is to be thrown as is. - * It is CRITICAL that the hidden Symbol can never occur on a - * user visible object that may get thrown. - */ - -#if defined(DUK_USE_PARANOID_ERRORS) - str_targ = duk_get_type_name(thr, -4); - str_key = duk_get_type_name(thr, -2); - str_base = duk_get_type_name(thr, -3); - duk_push_error_object(thr, - DUK_ERR_TYPE_ERROR | DUK_ERRCODE_FLAG_NOBLAME_FILELINE, - "%s not callable (property %s of %s)", - str_targ, - str_key, - str_base); - duk_xdef_prop_stridx(thr, -2, DUK_STRIDX_INT_TARGET, DUK_PROPDESC_FLAGS_NONE); /* Marker property, reuse _Target. */ - /* [ target base key { _Target: error } ] */ - duk_replace(thr, entry_top - 1); -#else - str_targ = duk_push_string_readable(thr, -4); - str_key = duk_push_string_readable(thr, -3); - str_base = duk_push_string_readable(thr, -5); - duk_push_error_object(thr, - DUK_ERR_TYPE_ERROR | DUK_ERRCODE_FLAG_NOBLAME_FILELINE, - "%s not callable (property %s of %s)", - str_targ, - str_key, - str_base); - /* [ target base key {} str_targ str_key str_base error ] */ - duk_xdef_prop_stridx(thr, -5, DUK_STRIDX_INT_TARGET, DUK_PROPDESC_FLAGS_NONE); /* Marker property, reuse _Target. */ - /* [ target base key { _Target: error } str_targ str_key str_base ] */ - duk_swap(thr, -4, entry_top - 1); - /* [ { _Target: error } base key target str_targ str_key str_base ] */ -#endif - - /* [ { _Target: error } */ - duk_set_top(thr, entry_top); - - /* [ { _Target: error } */ - DUK_ASSERT(!duk_is_callable(thr, -1)); /* Critical so that call handling will throw the error. */ -} -#endif /* DUK_USE_VERBOSE_ERRORS */ - -/* automatic undefs */ -#undef DUK__AUGMENT_CALL_RELAX_COUNT -#undef DUK__CALL_HANDLING_REQUIRE_STACK -#line 1 "duk_js_compiler.c" -/* - * ECMAScript compiler. - * - * Parses an input string and generates a function template result. - * Compilation may happen in multiple contexts (global code, eval - * code, function code). - * - * The parser uses a traditional top-down recursive parsing for the - * statement level, and an operator precedence based top-down approach - * for the expression level. The attempt is to minimize the C stack - * depth. Bytecode is generated directly without an intermediate - * representation (tree), at the cost of needing two (and sometimes - * three) passes over each function. - * - * The top-down recursive parser functions are named "duk__parse_XXX". - * - * Recursion limits are in key functions to prevent arbitrary C recursion: - * function body parsing, statement parsing, and expression parsing. - * - * See doc/compiler.rst for discussion on the design. - * - * A few typing notes: - * - * - duk_regconst_t: signed, highest bit set (< 0) means constant, - * some call sites use -1 for "none" (equivalent to constant 0x7fffffff) - * - PC values: duk_int_t, negative values used as markers - */ - -/* #include duk_internal.h -> already included */ - -/* If highest bit of a register number is set, it refers to a constant instead. - * When interpreted as a signed value, this means const values are always - * negative (when interpreted as two's complement). For example DUK__ISREG_TEMP() - * uses this approach to avoid an explicit DUK__ISREG() check (the condition is - * logically "'x' is a register AND 'x' >= temp_first"). - */ -#define DUK__CONST_MARKER DUK_REGCONST_CONST_MARKER -#define DUK__REMOVECONST(x) ((x) & ~DUK__CONST_MARKER) -#define DUK__ISREG(x) ((x) >= 0) -#define DUK__ISCONST(x) ((x) < 0) -#define DUK__ISREG_TEMP(comp_ctx, x) \ - ((duk_int32_t) (x) >= \ - (duk_int32_t) ((comp_ctx)->curr_func.temp_first)) /* Check for x >= temp_first && x >= 0 by comparing as signed. */ -#define DUK__ISREG_NOTTEMP(comp_ctx, x) \ - ((duk_uint32_t) (x) < \ - (duk_uint32_t) ((comp_ctx)->curr_func.temp_first)) /* Check for x >= 0 && x < temp_first by interpreting as unsigned. */ -#define DUK__GETTEMP(comp_ctx) ((comp_ctx)->curr_func.temp_next) -#define DUK__SETTEMP(comp_ctx, x) ((comp_ctx)->curr_func.temp_next = (x)) /* dangerous: must only lower (temp_max not updated) */ -#define DUK__SETTEMP_CHECKMAX(comp_ctx, x) duk__settemp_checkmax((comp_ctx), (x)) -#define DUK__ALLOCTEMP(comp_ctx) duk__alloctemp((comp_ctx)) -#define DUK__ALLOCTEMPS(comp_ctx, count) duk__alloctemps((comp_ctx), (count)) - -/* Init value set size for array and object literals. */ -#define DUK__MAX_ARRAY_INIT_VALUES 20 -#define DUK__MAX_OBJECT_INIT_PAIRS 10 - -/* XXX: hack, remove when const lookup is not O(n) */ -#define DUK__GETCONST_MAX_CONSTS_CHECK 256 - -/* These limits are based on bytecode limits. Max temps is limited - * by duk_hcompfunc nargs/nregs fields being 16 bits. - */ -#define DUK__MAX_CONSTS DUK_BC_BC_MAX -#define DUK__MAX_FUNCS DUK_BC_BC_MAX -#define DUK__MAX_TEMPS 0xffffL - -/* Initial bytecode size allocation. */ -#if defined(DUK_USE_PREFER_SIZE) -#define DUK__BC_INITIAL_INSTS 16 -#else -#define DUK__BC_INITIAL_INSTS 256 -#endif - -#define DUK__RECURSION_INCREASE(comp_ctx, thr) \ - do { \ - DUK_DDD(DUK_DDDPRINT("RECURSION INCREASE: %s:%ld", (const char *) DUK_FILE_MACRO, (long) DUK_LINE_MACRO)); \ - duk__comp_recursion_increase((comp_ctx)); \ - } while (0) - -#define DUK__RECURSION_DECREASE(comp_ctx, thr) \ - do { \ - DUK_DDD(DUK_DDDPRINT("RECURSION DECREASE: %s:%ld", (const char *) DUK_FILE_MACRO, (long) DUK_LINE_MACRO)); \ - duk__comp_recursion_decrease((comp_ctx)); \ - } while (0) - -/* Value stack slot limits: these are quite approximate right now, and - * because they overlap in control flow, some could be eliminated. - */ -#define DUK__COMPILE_ENTRY_SLOTS 8 -#define DUK__FUNCTION_INIT_REQUIRE_SLOTS 16 -#define DUK__FUNCTION_BODY_REQUIRE_SLOTS 16 -#define DUK__PARSE_STATEMENTS_SLOTS 16 -#define DUK__PARSE_EXPR_SLOTS 16 - -/* Temporary structure used to pass a stack allocated region through - * duk_safe_call(). - */ -typedef struct { - duk_small_uint_t flags; - duk_compiler_ctx comp_ctx_alloc; - duk_lexer_point lex_pt_alloc; -} duk__compiler_stkstate; - -/* - * Prototypes - */ - -/* lexing */ -DUK_LOCAL_DECL void duk__advance_helper(duk_compiler_ctx *comp_ctx, duk_small_int_t expect); -DUK_LOCAL_DECL void duk__advance_expect(duk_compiler_ctx *comp_ctx, duk_small_int_t expect); -DUK_LOCAL_DECL void duk__advance(duk_compiler_ctx *ctx); - -/* function helpers */ -DUK_LOCAL_DECL void duk__init_func_valstack_slots(duk_compiler_ctx *comp_ctx); -DUK_LOCAL_DECL void duk__reset_func_for_pass2(duk_compiler_ctx *comp_ctx); -DUK_LOCAL_DECL void duk__init_varmap_and_prologue_for_pass2(duk_compiler_ctx *comp_ctx, duk_regconst_t *out_stmt_value_reg); -DUK_LOCAL_DECL void duk__convert_to_func_template(duk_compiler_ctx *comp_ctx); -DUK_LOCAL_DECL duk_int_t duk__cleanup_varmap(duk_compiler_ctx *comp_ctx); - -/* code emission */ -DUK_LOCAL_DECL duk_int_t duk__get_current_pc(duk_compiler_ctx *comp_ctx); -DUK_LOCAL_DECL duk_compiler_instr *duk__get_instr_ptr(duk_compiler_ctx *comp_ctx, duk_int_t pc); -DUK_LOCAL_DECL void duk__emit(duk_compiler_ctx *comp_ctx, duk_instr_t ins); -DUK_LOCAL_DECL void duk__emit_op_only(duk_compiler_ctx *comp_ctx, duk_small_uint_t op); -DUK_LOCAL_DECL void duk__emit_a_b_c(duk_compiler_ctx *comp_ctx, - duk_small_uint_t op_flags, - duk_regconst_t a, - duk_regconst_t b, - duk_regconst_t c); -DUK_LOCAL_DECL void duk__emit_a_b(duk_compiler_ctx *comp_ctx, duk_small_uint_t op_flags, duk_regconst_t a, duk_regconst_t b); -DUK_LOCAL_DECL void duk__emit_b_c(duk_compiler_ctx *comp_ctx, duk_small_uint_t op_flags, duk_regconst_t b, duk_regconst_t c); -#if 0 /* unused */ -DUK_LOCAL_DECL void duk__emit_a(duk_compiler_ctx *comp_ctx, duk_small_uint_t op_flags, duk_regconst_t a); -DUK_LOCAL_DECL void duk__emit_b(duk_compiler_ctx *comp_ctx, duk_small_uint_t op_flags, duk_regconst_t b); -#endif -DUK_LOCAL_DECL void duk__emit_a_bc(duk_compiler_ctx *comp_ctx, duk_small_uint_t op_flags, duk_regconst_t a, duk_regconst_t bc); -DUK_LOCAL_DECL void duk__emit_bc(duk_compiler_ctx *comp_ctx, duk_small_uint_t op, duk_regconst_t bc); -DUK_LOCAL_DECL void duk__emit_abc(duk_compiler_ctx *comp_ctx, duk_small_uint_t op, duk_regconst_t abc); -DUK_LOCAL_DECL void duk__emit_load_int32(duk_compiler_ctx *comp_ctx, duk_regconst_t reg, duk_int32_t val); -DUK_LOCAL_DECL void duk__emit_load_int32_noshuffle(duk_compiler_ctx *comp_ctx, duk_regconst_t reg, duk_int32_t val); -DUK_LOCAL_DECL void duk__emit_jump(duk_compiler_ctx *comp_ctx, duk_int_t target_pc); -DUK_LOCAL_DECL duk_int_t duk__emit_jump_empty(duk_compiler_ctx *comp_ctx); -DUK_LOCAL_DECL void duk__insert_jump_entry(duk_compiler_ctx *comp_ctx, duk_int_t jump_pc); -DUK_LOCAL_DECL void duk__patch_jump(duk_compiler_ctx *comp_ctx, duk_int_t jump_pc, duk_int_t target_pc); -DUK_LOCAL_DECL void duk__patch_jump_here(duk_compiler_ctx *comp_ctx, duk_int_t jump_pc); -DUK_LOCAL_DECL void duk__patch_trycatch(duk_compiler_ctx *comp_ctx, - duk_int_t ldconst_pc, - duk_int_t trycatch_pc, - duk_regconst_t reg_catch, - duk_regconst_t const_varname, - duk_small_uint_t flags); -DUK_LOCAL_DECL void duk__emit_if_false_skip(duk_compiler_ctx *comp_ctx, duk_regconst_t regconst); -DUK_LOCAL_DECL void duk__emit_if_true_skip(duk_compiler_ctx *comp_ctx, duk_regconst_t regconst); -DUK_LOCAL_DECL void duk__emit_invalid(duk_compiler_ctx *comp_ctx); - -/* ivalue/ispec helpers */ -DUK_LOCAL_DECL void duk__ivalue_regconst(duk_ivalue *x, duk_regconst_t regconst); -DUK_LOCAL_DECL void duk__ivalue_plain_fromstack(duk_compiler_ctx *comp_ctx, duk_ivalue *x); -DUK_LOCAL_DECL void duk__ivalue_var_fromstack(duk_compiler_ctx *comp_ctx, duk_ivalue *x); -DUK_LOCAL_DECL void duk__ivalue_var_hstring(duk_compiler_ctx *comp_ctx, duk_ivalue *x, duk_hstring *h); -DUK_LOCAL_DECL void duk__copy_ispec(duk_compiler_ctx *comp_ctx, duk_ispec *src, duk_ispec *dst); -DUK_LOCAL_DECL void duk__copy_ivalue(duk_compiler_ctx *comp_ctx, duk_ivalue *src, duk_ivalue *dst); -DUK_LOCAL_DECL duk_regconst_t duk__alloctemps(duk_compiler_ctx *comp_ctx, duk_small_int_t num); -DUK_LOCAL_DECL duk_regconst_t duk__alloctemp(duk_compiler_ctx *comp_ctx); -DUK_LOCAL_DECL void duk__settemp_checkmax(duk_compiler_ctx *comp_ctx, duk_regconst_t temp_next); -DUK_LOCAL_DECL duk_regconst_t duk__getconst(duk_compiler_ctx *comp_ctx); -DUK_LOCAL_DECL -duk_regconst_t duk__ispec_toregconst_raw(duk_compiler_ctx *comp_ctx, - duk_ispec *x, - duk_regconst_t forced_reg, - duk_small_uint_t flags); -DUK_LOCAL_DECL void duk__ispec_toforcedreg(duk_compiler_ctx *comp_ctx, duk_ispec *x, duk_regconst_t forced_reg); -DUK_LOCAL_DECL void duk__ivalue_toplain_raw(duk_compiler_ctx *comp_ctx, duk_ivalue *x, duk_regconst_t forced_reg); -DUK_LOCAL_DECL void duk__ivalue_toplain(duk_compiler_ctx *comp_ctx, duk_ivalue *x); -DUK_LOCAL_DECL void duk__ivalue_toplain_ignore(duk_compiler_ctx *comp_ctx, duk_ivalue *x); -DUK_LOCAL_DECL -duk_regconst_t duk__ivalue_toregconst_raw(duk_compiler_ctx *comp_ctx, - duk_ivalue *x, - duk_regconst_t forced_reg, - duk_small_uint_t flags); -DUK_LOCAL_DECL duk_regconst_t duk__ivalue_toreg(duk_compiler_ctx *comp_ctx, duk_ivalue *x); -#if 0 /* unused */ -DUK_LOCAL_DECL duk_regconst_t duk__ivalue_totemp(duk_compiler_ctx *comp_ctx, duk_ivalue *x); -#endif -DUK_LOCAL_DECL void duk__ivalue_toforcedreg(duk_compiler_ctx *comp_ctx, duk_ivalue *x, duk_int_t forced_reg); -DUK_LOCAL_DECL duk_regconst_t duk__ivalue_toregconst(duk_compiler_ctx *comp_ctx, duk_ivalue *x); -DUK_LOCAL_DECL duk_regconst_t duk__ivalue_totempconst(duk_compiler_ctx *comp_ctx, duk_ivalue *x); - -/* identifier handling */ -DUK_LOCAL_DECL duk_regconst_t duk__lookup_active_register_binding(duk_compiler_ctx *comp_ctx); -DUK_LOCAL_DECL duk_bool_t duk__lookup_lhs(duk_compiler_ctx *ctx, duk_regconst_t *out_reg_varbind, duk_regconst_t *out_rc_varname); - -/* label handling */ -DUK_LOCAL_DECL void duk__add_label(duk_compiler_ctx *comp_ctx, duk_hstring *h_label, duk_int_t pc_label, duk_int_t label_id); -DUK_LOCAL_DECL void duk__update_label_flags(duk_compiler_ctx *comp_ctx, duk_int_t label_id, duk_small_uint_t flags); -DUK_LOCAL_DECL void duk__lookup_active_label(duk_compiler_ctx *comp_ctx, - duk_hstring *h_label, - duk_bool_t is_break, - duk_int_t *out_label_id, - duk_int_t *out_label_catch_depth, - duk_int_t *out_label_pc, - duk_bool_t *out_is_closest); -DUK_LOCAL_DECL void duk__reset_labels_to_length(duk_compiler_ctx *comp_ctx, duk_size_t len); - -/* top-down expression parser */ -DUK_LOCAL_DECL void duk__expr_nud(duk_compiler_ctx *comp_ctx, duk_ivalue *res); -DUK_LOCAL_DECL void duk__expr_led(duk_compiler_ctx *comp_ctx, duk_ivalue *left, duk_ivalue *res); -DUK_LOCAL_DECL duk_small_uint_t duk__expr_lbp(duk_compiler_ctx *comp_ctx); -DUK_LOCAL_DECL duk_bool_t duk__expr_is_empty(duk_compiler_ctx *comp_ctx); - -/* exprtop is the top level variant which resets nud/led counts */ -DUK_LOCAL_DECL void duk__expr(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags); -DUK_LOCAL_DECL void duk__exprtop(duk_compiler_ctx *ctx, duk_ivalue *res, duk_small_uint_t rbp_flags); - -/* convenience helpers */ -#if 0 /* unused */ -DUK_LOCAL_DECL duk_regconst_t duk__expr_toreg(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags); -#endif -#if 0 /* unused */ -DUK_LOCAL_DECL duk_regconst_t duk__expr_totemp(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags); -#endif -DUK_LOCAL_DECL void duk__expr_toforcedreg(duk_compiler_ctx *comp_ctx, - duk_ivalue *res, - duk_small_uint_t rbp_flags, - duk_regconst_t forced_reg); -DUK_LOCAL_DECL duk_regconst_t duk__expr_toregconst(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags); -#if 0 /* unused */ -DUK_LOCAL_DECL duk_regconst_t duk__expr_totempconst(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags); -#endif -DUK_LOCAL_DECL void duk__expr_toplain(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags); -DUK_LOCAL_DECL void duk__expr_toplain_ignore(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags); -DUK_LOCAL_DECL duk_regconst_t duk__exprtop_toreg(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags); -#if 0 /* unused */ -DUK_LOCAL_DECL duk_regconst_t duk__exprtop_totemp(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags); -#endif -DUK_LOCAL_DECL void duk__exprtop_toforcedreg(duk_compiler_ctx *comp_ctx, - duk_ivalue *res, - duk_small_uint_t rbp_flags, - duk_regconst_t forced_reg); -DUK_LOCAL_DECL duk_regconst_t duk__exprtop_toregconst(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags); -#if 0 /* unused */ -DUK_LOCAL_DECL void duk__exprtop_toplain_ignore(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags); -#endif - -/* expression parsing helpers */ -DUK_LOCAL_DECL duk_int_t duk__parse_arguments(duk_compiler_ctx *comp_ctx, duk_ivalue *res); -DUK_LOCAL_DECL void duk__nud_array_literal(duk_compiler_ctx *comp_ctx, duk_ivalue *res); -DUK_LOCAL_DECL void duk__nud_object_literal(duk_compiler_ctx *comp_ctx, duk_ivalue *res); - -/* statement parsing */ -DUK_LOCAL_DECL void duk__parse_var_decl(duk_compiler_ctx *comp_ctx, - duk_ivalue *res, - duk_small_uint_t expr_flags, - duk_regconst_t *out_reg_varbind, - duk_regconst_t *out_rc_varname); -DUK_LOCAL_DECL void duk__parse_var_stmt(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t expr_flags); -DUK_LOCAL_DECL void duk__parse_for_stmt(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_int_t pc_label_site); -DUK_LOCAL_DECL void duk__parse_switch_stmt(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_int_t pc_label_site); -DUK_LOCAL_DECL void duk__parse_if_stmt(duk_compiler_ctx *comp_ctx, duk_ivalue *res); -DUK_LOCAL_DECL void duk__parse_do_stmt(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_int_t pc_label_site); -DUK_LOCAL_DECL void duk__parse_while_stmt(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_int_t pc_label_site); -DUK_LOCAL_DECL void duk__parse_break_or_continue_stmt(duk_compiler_ctx *comp_ctx, duk_ivalue *res); -DUK_LOCAL_DECL void duk__parse_return_stmt(duk_compiler_ctx *comp_ctx, duk_ivalue *res); -DUK_LOCAL_DECL void duk__parse_throw_stmt(duk_compiler_ctx *comp_ctx, duk_ivalue *res); -DUK_LOCAL_DECL void duk__parse_try_stmt(duk_compiler_ctx *comp_ctx, duk_ivalue *res); -DUK_LOCAL_DECL void duk__parse_with_stmt(duk_compiler_ctx *comp_ctx, duk_ivalue *res); -DUK_LOCAL_DECL void duk__parse_stmt(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_bool_t allow_source_elem); -DUK_LOCAL_DECL duk_int_t duk__stmt_label_site(duk_compiler_ctx *comp_ctx, duk_int_t label_id); -DUK_LOCAL_DECL void duk__parse_stmts(duk_compiler_ctx *comp_ctx, - duk_bool_t allow_source_elem, - duk_bool_t expect_eof, - duk_bool_t regexp_after); - -DUK_LOCAL_DECL void duk__parse_func_body(duk_compiler_ctx *comp_ctx, - duk_bool_t expect_eof, - duk_bool_t implicit_return_value, - duk_bool_t regexp_after, - duk_small_int_t expect_token); -DUK_LOCAL_DECL void duk__parse_func_formals(duk_compiler_ctx *comp_ctx); -DUK_LOCAL_DECL void duk__parse_func_like_raw(duk_compiler_ctx *comp_ctx, duk_small_uint_t flags); -DUK_LOCAL_DECL duk_int_t duk__parse_func_like_fnum(duk_compiler_ctx *comp_ctx, duk_small_uint_t flags); - -#define DUK__FUNC_FLAG_DECL (1 << 0) /* Parsing a function declaration. */ -#define DUK__FUNC_FLAG_GETSET (1 << 1) /* Parsing an object literal getter/setter. */ -#define DUK__FUNC_FLAG_METDEF (1 << 2) /* Parsing an object literal method definition shorthand. */ -#define DUK__FUNC_FLAG_PUSHNAME_PASS1 (1 << 3) /* Push function name when creating template (first pass only). */ -#define DUK__FUNC_FLAG_USE_PREVTOKEN (1 << 4) /* Use prev_token to start function parsing (workaround for object literal). */ - -/* - * Parser control values for tokens. The token table is ordered by the - * DUK_TOK_XXX defines. - * - * The binding powers are for lbp() use (i.e. for use in led() context). - * Binding powers are positive for typing convenience, and bits at the - * top should be reserved for flags. Binding power step must be higher - * than 1 so that binding power "lbp - 1" can be used for right associative - * operators. Currently a step of 2 is used (which frees one more bit for - * flags). - */ - -/* XXX: actually single step levels would work just fine, clean up */ - -/* binding power "levels" (see doc/compiler.rst) */ -#define DUK__BP_INVALID 0 /* always terminates led() */ -#define DUK__BP_EOF 2 -#define DUK__BP_CLOSING 4 /* token closes expression, e.g. ')', ']' */ -#define DUK__BP_FOR_EXPR DUK__BP_CLOSING /* bp to use when parsing a top level Expression */ -#define DUK__BP_COMMA 6 -#define DUK__BP_ASSIGNMENT 8 -#define DUK__BP_CONDITIONAL 10 -#define DUK__BP_LOR 12 -#define DUK__BP_LAND 14 -#define DUK__BP_BOR 16 -#define DUK__BP_BXOR 18 -#define DUK__BP_BAND 20 -#define DUK__BP_EQUALITY 22 -#define DUK__BP_RELATIONAL 24 -#define DUK__BP_SHIFT 26 -#define DUK__BP_ADDITIVE 28 -#define DUK__BP_MULTIPLICATIVE 30 -#define DUK__BP_EXPONENTIATION 32 -#define DUK__BP_POSTFIX 34 -#define DUK__BP_CALL 36 -#define DUK__BP_MEMBER 38 - -#define DUK__TOKEN_LBP_BP_MASK 0x1f -#define DUK__TOKEN_LBP_FLAG_NO_REGEXP (1 << 5) /* regexp literal must not follow this token */ -#define DUK__TOKEN_LBP_FLAG_TERMINATES (1 << 6) /* terminates expression; e.g. post-increment/-decrement */ -#define DUK__TOKEN_LBP_FLAG_UNUSED (1 << 7) /* unused */ - -#define DUK__TOKEN_LBP_GET_BP(x) ((duk_small_uint_t) (((x) &DUK__TOKEN_LBP_BP_MASK) * 2)) - -#define DUK__MK_LBP(bp) ((bp) >> 1) /* bp is assumed to be even */ -#define DUK__MK_LBP_FLAGS(bp, flags) (((bp) >> 1) | (flags)) - -DUK_LOCAL const duk_uint8_t duk__token_lbp[] = { - DUK__MK_LBP(DUK__BP_EOF), /* DUK_TOK_EOF */ - DUK__MK_LBP_FLAGS(DUK__BP_INVALID, DUK__TOKEN_LBP_FLAG_NO_REGEXP), /* DUK_TOK_IDENTIFIER */ - DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_BREAK */ - DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_CASE */ - DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_CATCH */ - DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_CONTINUE */ - DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_DEBUGGER */ - DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_DEFAULT */ - DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_DELETE */ - DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_DO */ - DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_ELSE */ - DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_FINALLY */ - DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_FOR */ - DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_FUNCTION */ - DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_IF */ - DUK__MK_LBP(DUK__BP_RELATIONAL), /* DUK_TOK_IN */ - DUK__MK_LBP(DUK__BP_RELATIONAL), /* DUK_TOK_INSTANCEOF */ - DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_NEW */ - DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_RETURN */ - DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_SWITCH */ - DUK__MK_LBP_FLAGS(DUK__BP_INVALID, DUK__TOKEN_LBP_FLAG_NO_REGEXP), /* DUK_TOK_THIS */ - DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_THROW */ - DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_TRY */ - DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_TYPEOF */ - DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_VAR */ - DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_CONST */ - DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_VOID */ - DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_WHILE */ - DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_WITH */ - DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_CLASS */ - DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_ENUM */ - DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_EXPORT */ - DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_EXTENDS */ - DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_IMPORT */ - DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_SUPER */ - DUK__MK_LBP_FLAGS(DUK__BP_INVALID, DUK__TOKEN_LBP_FLAG_NO_REGEXP), /* DUK_TOK_NULL */ - DUK__MK_LBP_FLAGS(DUK__BP_INVALID, DUK__TOKEN_LBP_FLAG_NO_REGEXP), /* DUK_TOK_TRUE */ - DUK__MK_LBP_FLAGS(DUK__BP_INVALID, DUK__TOKEN_LBP_FLAG_NO_REGEXP), /* DUK_TOK_FALSE */ - DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_GET */ - DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_SET */ - DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_IMPLEMENTS */ - DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_INTERFACE */ - DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_LET */ - DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_PACKAGE */ - DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_PRIVATE */ - DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_PROTECTED */ - DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_PUBLIC */ - DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_STATIC */ - DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_YIELD */ - DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_LCURLY */ - DUK__MK_LBP_FLAGS(DUK__BP_INVALID, DUK__TOKEN_LBP_FLAG_NO_REGEXP), /* DUK_TOK_RCURLY */ - DUK__MK_LBP(DUK__BP_MEMBER), /* DUK_TOK_LBRACKET */ - DUK__MK_LBP_FLAGS(DUK__BP_CLOSING, DUK__TOKEN_LBP_FLAG_NO_REGEXP), /* DUK_TOK_RBRACKET */ - DUK__MK_LBP(DUK__BP_CALL), /* DUK_TOK_LPAREN */ - DUK__MK_LBP_FLAGS(DUK__BP_CLOSING, DUK__TOKEN_LBP_FLAG_NO_REGEXP), /* DUK_TOK_RPAREN */ - DUK__MK_LBP(DUK__BP_MEMBER), /* DUK_TOK_PERIOD */ - DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_SEMICOLON */ - DUK__MK_LBP(DUK__BP_COMMA), /* DUK_TOK_COMMA */ - DUK__MK_LBP(DUK__BP_RELATIONAL), /* DUK_TOK_LT */ - DUK__MK_LBP(DUK__BP_RELATIONAL), /* DUK_TOK_GT */ - DUK__MK_LBP(DUK__BP_RELATIONAL), /* DUK_TOK_LE */ - DUK__MK_LBP(DUK__BP_RELATIONAL), /* DUK_TOK_GE */ - DUK__MK_LBP(DUK__BP_EQUALITY), /* DUK_TOK_EQ */ - DUK__MK_LBP(DUK__BP_EQUALITY), /* DUK_TOK_NEQ */ - DUK__MK_LBP(DUK__BP_EQUALITY), /* DUK_TOK_SEQ */ - DUK__MK_LBP(DUK__BP_EQUALITY), /* DUK_TOK_SNEQ */ - DUK__MK_LBP(DUK__BP_ADDITIVE), /* DUK_TOK_ADD */ - DUK__MK_LBP(DUK__BP_ADDITIVE), /* DUK_TOK_SUB */ - DUK__MK_LBP(DUK__BP_MULTIPLICATIVE), /* DUK_TOK_MUL */ - DUK__MK_LBP(DUK__BP_MULTIPLICATIVE), /* DUK_TOK_DIV */ - DUK__MK_LBP(DUK__BP_MULTIPLICATIVE), /* DUK_TOK_MOD */ - DUK__MK_LBP(DUK__BP_EXPONENTIATION), /* DUK_TOK_EXP */ - DUK__MK_LBP_FLAGS(DUK__BP_POSTFIX, DUK__TOKEN_LBP_FLAG_NO_REGEXP), /* DUK_TOK_INCREMENT */ - DUK__MK_LBP_FLAGS(DUK__BP_POSTFIX, DUK__TOKEN_LBP_FLAG_NO_REGEXP), /* DUK_TOK_DECREMENT */ - DUK__MK_LBP(DUK__BP_SHIFT), /* DUK_TOK_ALSHIFT */ - DUK__MK_LBP(DUK__BP_SHIFT), /* DUK_TOK_ARSHIFT */ - DUK__MK_LBP(DUK__BP_SHIFT), /* DUK_TOK_RSHIFT */ - DUK__MK_LBP(DUK__BP_BAND), /* DUK_TOK_BAND */ - DUK__MK_LBP(DUK__BP_BOR), /* DUK_TOK_BOR */ - DUK__MK_LBP(DUK__BP_BXOR), /* DUK_TOK_BXOR */ - DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_LNOT */ - DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_BNOT */ - DUK__MK_LBP(DUK__BP_LAND), /* DUK_TOK_LAND */ - DUK__MK_LBP(DUK__BP_LOR), /* DUK_TOK_LOR */ - DUK__MK_LBP(DUK__BP_CONDITIONAL), /* DUK_TOK_QUESTION */ - DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_COLON */ - DUK__MK_LBP(DUK__BP_ASSIGNMENT), /* DUK_TOK_EQUALSIGN */ - DUK__MK_LBP(DUK__BP_ASSIGNMENT), /* DUK_TOK_ADD_EQ */ - DUK__MK_LBP(DUK__BP_ASSIGNMENT), /* DUK_TOK_SUB_EQ */ - DUK__MK_LBP(DUK__BP_ASSIGNMENT), /* DUK_TOK_MUL_EQ */ - DUK__MK_LBP(DUK__BP_ASSIGNMENT), /* DUK_TOK_DIV_EQ */ - DUK__MK_LBP(DUK__BP_ASSIGNMENT), /* DUK_TOK_MOD_EQ */ - DUK__MK_LBP(DUK__BP_ASSIGNMENT), /* DUK_TOK_EXP_EQ */ - DUK__MK_LBP(DUK__BP_ASSIGNMENT), /* DUK_TOK_ALSHIFT_EQ */ - DUK__MK_LBP(DUK__BP_ASSIGNMENT), /* DUK_TOK_ARSHIFT_EQ */ - DUK__MK_LBP(DUK__BP_ASSIGNMENT), /* DUK_TOK_RSHIFT_EQ */ - DUK__MK_LBP(DUK__BP_ASSIGNMENT), /* DUK_TOK_BAND_EQ */ - DUK__MK_LBP(DUK__BP_ASSIGNMENT), /* DUK_TOK_BOR_EQ */ - DUK__MK_LBP(DUK__BP_ASSIGNMENT), /* DUK_TOK_BXOR_EQ */ - DUK__MK_LBP_FLAGS(DUK__BP_INVALID, DUK__TOKEN_LBP_FLAG_NO_REGEXP), /* DUK_TOK_NUMBER */ - DUK__MK_LBP_FLAGS(DUK__BP_INVALID, DUK__TOKEN_LBP_FLAG_NO_REGEXP), /* DUK_TOK_STRING */ - DUK__MK_LBP_FLAGS(DUK__BP_INVALID, DUK__TOKEN_LBP_FLAG_NO_REGEXP), /* DUK_TOK_REGEXP */ -}; - -/* - * Misc helpers - */ - -DUK_LOCAL void duk__comp_recursion_increase(duk_compiler_ctx *comp_ctx) { - DUK_ASSERT(comp_ctx != NULL); - DUK_ASSERT(comp_ctx->recursion_depth >= 0); - if (comp_ctx->recursion_depth >= comp_ctx->recursion_limit) { - DUK_ERROR_RANGE(comp_ctx->thr, DUK_STR_COMPILER_RECURSION_LIMIT); - DUK_WO_NORETURN(return;); - } - comp_ctx->recursion_depth++; -} - -DUK_LOCAL void duk__comp_recursion_decrease(duk_compiler_ctx *comp_ctx) { - DUK_ASSERT(comp_ctx != NULL); - DUK_ASSERT(comp_ctx->recursion_depth > 0); - comp_ctx->recursion_depth--; -} - -DUK_LOCAL duk_bool_t duk__hstring_is_eval_or_arguments(duk_compiler_ctx *comp_ctx, duk_hstring *h) { - DUK_UNREF(comp_ctx); - DUK_ASSERT(h != NULL); - return DUK_HSTRING_HAS_EVAL_OR_ARGUMENTS(h); -} - -DUK_LOCAL duk_bool_t duk__hstring_is_eval_or_arguments_in_strict_mode(duk_compiler_ctx *comp_ctx, duk_hstring *h) { - DUK_ASSERT(h != NULL); - return (comp_ctx->curr_func.is_strict && DUK_HSTRING_HAS_EVAL_OR_ARGUMENTS(h)); -} - -/* - * Parser duk__advance() token eating functions - */ - -/* XXX: valstack handling is awkward. Add a valstack helper which - * avoids dup():ing; valstack_copy(src, dst)? - */ - -DUK_LOCAL void duk__advance_helper(duk_compiler_ctx *comp_ctx, duk_small_int_t expect) { - duk_hthread *thr = comp_ctx->thr; - duk_bool_t regexp; - - DUK_ASSERT_DISABLE(comp_ctx->curr_token.t >= 0); /* unsigned */ - DUK_ASSERT(comp_ctx->curr_token.t <= DUK_TOK_MAXVAL); /* MAXVAL is inclusive */ - - /* - * Use current token to decide whether a RegExp can follow. - * - * We can use either 't' or 't_nores'; the latter would not - * recognize keywords. Some keywords can be followed by a - * RegExp (e.g. "return"), so using 't' is better. This is - * not trivial, see doc/compiler.rst. - */ - - regexp = 1; - if (duk__token_lbp[comp_ctx->curr_token.t] & DUK__TOKEN_LBP_FLAG_NO_REGEXP) { - regexp = 0; - } - if (comp_ctx->curr_func.reject_regexp_in_adv) { - comp_ctx->curr_func.reject_regexp_in_adv = 0; - regexp = 0; - } - if (comp_ctx->curr_func.allow_regexp_in_adv) { - comp_ctx->curr_func.allow_regexp_in_adv = 0; - regexp = 1; - } - - if (expect >= 0 && comp_ctx->curr_token.t != (duk_small_uint_t) expect) { - DUK_D(DUK_DPRINT("parse error: expect=%ld, got=%ld", (long) expect, (long) comp_ctx->curr_token.t)); - DUK_ERROR_SYNTAX(thr, DUK_STR_PARSE_ERROR); - DUK_WO_NORETURN(return;); - } - - /* make current token the previous; need to fiddle with valstack "backing store" */ - duk_memcpy(&comp_ctx->prev_token, &comp_ctx->curr_token, sizeof(duk_token)); - duk_copy(thr, comp_ctx->tok11_idx, comp_ctx->tok21_idx); - duk_copy(thr, comp_ctx->tok12_idx, comp_ctx->tok22_idx); - - /* parse new token */ - duk_lexer_parse_js_input_element(&comp_ctx->lex, &comp_ctx->curr_token, comp_ctx->curr_func.is_strict, regexp); - - DUK_DDD(DUK_DDDPRINT("advance: curr: tok=%ld/%ld,%ld,term=%ld,%!T,%!T " - "prev: tok=%ld/%ld,%ld,term=%ld,%!T,%!T", - (long) comp_ctx->curr_token.t, - (long) comp_ctx->curr_token.t_nores, - (long) comp_ctx->curr_token.start_line, - (long) comp_ctx->curr_token.lineterm, - (duk_tval *) duk_get_tval(thr, comp_ctx->tok11_idx), - (duk_tval *) duk_get_tval(thr, comp_ctx->tok12_idx), - (long) comp_ctx->prev_token.t, - (long) comp_ctx->prev_token.t_nores, - (long) comp_ctx->prev_token.start_line, - (long) comp_ctx->prev_token.lineterm, - (duk_tval *) duk_get_tval(thr, comp_ctx->tok21_idx), - (duk_tval *) duk_get_tval(thr, comp_ctx->tok22_idx))); -} - -/* advance, expecting current token to be a specific token; parse next token in regexp context */ -DUK_LOCAL void duk__advance_expect(duk_compiler_ctx *comp_ctx, duk_small_int_t expect) { - duk__advance_helper(comp_ctx, expect); -} - -/* advance, whatever the current token is; parse next token in regexp context */ -DUK_LOCAL void duk__advance(duk_compiler_ctx *comp_ctx) { - duk__advance_helper(comp_ctx, -1); -} - -/* - * Helpers for duk_compiler_func. - */ - -/* init function state: inits valstack allocations */ -DUK_LOCAL void duk__init_func_valstack_slots(duk_compiler_ctx *comp_ctx) { - duk_compiler_func *func = &comp_ctx->curr_func; - duk_hthread *thr = comp_ctx->thr; - duk_idx_t entry_top; - - entry_top = duk_get_top(thr); - - duk_memzero(func, sizeof(*func)); /* intentional overlap with earlier memzero */ -#if defined(DUK_USE_EXPLICIT_NULL_INIT) - func->h_name = NULL; - func->h_consts = NULL; - func->h_funcs = NULL; - func->h_decls = NULL; - func->h_labelnames = NULL; - func->h_labelinfos = NULL; - func->h_argnames = NULL; - func->h_varmap = NULL; -#endif - - duk_require_stack(thr, DUK__FUNCTION_INIT_REQUIRE_SLOTS); - - DUK_BW_INIT_PUSHBUF(thr, &func->bw_code, DUK__BC_INITIAL_INSTS * sizeof(duk_compiler_instr)); - /* code_idx = entry_top + 0 */ - - duk_push_bare_array(thr); - func->consts_idx = entry_top + 1; - func->h_consts = DUK_GET_HOBJECT_POSIDX(thr, entry_top + 1); - DUK_ASSERT(func->h_consts != NULL); - - duk_push_bare_array(thr); - func->funcs_idx = entry_top + 2; - func->h_funcs = DUK_GET_HOBJECT_POSIDX(thr, entry_top + 2); - DUK_ASSERT(func->h_funcs != NULL); - DUK_ASSERT(func->fnum_next == 0); - - duk_push_bare_array(thr); - func->decls_idx = entry_top + 3; - func->h_decls = DUK_GET_HOBJECT_POSIDX(thr, entry_top + 3); - DUK_ASSERT(func->h_decls != NULL); - - duk_push_bare_array(thr); - func->labelnames_idx = entry_top + 4; - func->h_labelnames = DUK_GET_HOBJECT_POSIDX(thr, entry_top + 4); - DUK_ASSERT(func->h_labelnames != NULL); - - duk_push_dynamic_buffer(thr, 0); - func->labelinfos_idx = entry_top + 5; - func->h_labelinfos = (duk_hbuffer_dynamic *) duk_known_hbuffer(thr, entry_top + 5); - DUK_ASSERT(func->h_labelinfos != NULL); - DUK_ASSERT(DUK_HBUFFER_HAS_DYNAMIC(func->h_labelinfos) && !DUK_HBUFFER_HAS_EXTERNAL(func->h_labelinfos)); - - duk_push_bare_array(thr); - func->argnames_idx = entry_top + 6; - func->h_argnames = DUK_GET_HOBJECT_POSIDX(thr, entry_top + 6); - DUK_ASSERT(func->h_argnames != NULL); - - duk_push_bare_object(thr); - func->varmap_idx = entry_top + 7; - func->h_varmap = DUK_GET_HOBJECT_POSIDX(thr, entry_top + 7); - DUK_ASSERT(func->h_varmap != NULL); -} - -/* reset function state (prepare for pass 2) */ -DUK_LOCAL void duk__reset_func_for_pass2(duk_compiler_ctx *comp_ctx) { - duk_compiler_func *func = &comp_ctx->curr_func; - duk_hthread *thr = comp_ctx->thr; - - /* reset bytecode buffer but keep current size; pass 2 will - * require same amount or more. - */ - DUK_BW_RESET_SIZE(thr, &func->bw_code); - - duk_set_length(thr, func->consts_idx, 0); - /* keep func->h_funcs; inner functions are not reparsed to avoid O(depth^2) parsing */ - func->fnum_next = 0; - /* duk_set_length(thr, func->funcs_idx, 0); */ - duk_set_length(thr, func->labelnames_idx, 0); - duk_hbuffer_reset(thr, func->h_labelinfos); - /* keep func->h_argnames; it is fixed for all passes */ - - /* truncated in case pass 3 needed */ - duk_push_bare_object(thr); - duk_replace(thr, func->varmap_idx); - func->h_varmap = DUK_GET_HOBJECT_POSIDX(thr, func->varmap_idx); - DUK_ASSERT(func->h_varmap != NULL); -} - -/* cleanup varmap from any null entries, compact it, etc; returns number - * of final entries after cleanup. - */ -DUK_LOCAL duk_int_t duk__cleanup_varmap(duk_compiler_ctx *comp_ctx) { - duk_hthread *thr = comp_ctx->thr; - duk_hobject *h_varmap; - duk_hstring *h_key; - duk_tval *tv; - duk_uint32_t i, e_next; - duk_int_t ret; - - /* [ ... varmap ] */ - - h_varmap = DUK_GET_HOBJECT_NEGIDX(thr, -1); - DUK_ASSERT(h_varmap != NULL); - - ret = 0; - e_next = DUK_HOBJECT_GET_ENEXT(h_varmap); - for (i = 0; i < e_next; i++) { - h_key = DUK_HOBJECT_E_GET_KEY(thr->heap, h_varmap, i); - if (!h_key) { - continue; - } - - DUK_ASSERT(!DUK_HOBJECT_E_SLOT_IS_ACCESSOR(thr->heap, h_varmap, i)); - - /* The entries can either be register numbers or 'null' values. - * Thus, no need to DECREF them and get side effects. DECREF'ing - * the keys (strings) can cause memory to be freed but no side - * effects as strings don't have finalizers. This is why we can - * rely on the object properties not changing from underneath us. - */ - - tv = DUK_HOBJECT_E_GET_VALUE_TVAL_PTR(thr->heap, h_varmap, i); - if (!DUK_TVAL_IS_NUMBER(tv)) { - DUK_ASSERT(!DUK_TVAL_IS_HEAP_ALLOCATED(tv)); - DUK_HOBJECT_E_SET_KEY(thr->heap, h_varmap, i, NULL); - DUK_HSTRING_DECREF(thr, h_key); - /* when key is NULL, value is garbage so no need to set */ - } else { - ret++; - } - } - - duk_compact_m1(thr); - - return ret; -} - -/* Convert duk_compiler_func into a function template, leaving the result - * on top of stack. - */ -/* XXX: awkward and bloated asm -- use faster internal accesses */ -DUK_LOCAL void duk__convert_to_func_template(duk_compiler_ctx *comp_ctx) { - duk_compiler_func *func = &comp_ctx->curr_func; - duk_hthread *thr = comp_ctx->thr; - duk_hcompfunc *h_res; - duk_hbuffer_fixed *h_data; - duk_size_t consts_count; - duk_size_t funcs_count; - duk_size_t code_count; - duk_size_t code_size; - duk_size_t data_size; - duk_size_t i; - duk_tval *p_const; - duk_hobject **p_func; - duk_instr_t *p_instr; - duk_compiler_instr *q_instr; - duk_tval *tv; - duk_bool_t keep_varmap; - duk_bool_t keep_formals; -#if !defined(DUK_USE_DEBUGGER_SUPPORT) - duk_size_t formals_length; -#endif - - DUK_DDD(DUK_DDDPRINT("converting duk_compiler_func to function/template")); - - /* - * Push result object and init its flags - */ - - /* Valstack should suffice here, required on function valstack init */ - - h_res = duk_push_hcompfunc(thr); - DUK_ASSERT(h_res != NULL); - DUK_ASSERT(DUK_HOBJECT_GET_PROTOTYPE(thr->heap, (duk_hobject *) h_res) == thr->builtins[DUK_BIDX_FUNCTION_PROTOTYPE]); - DUK_HOBJECT_SET_PROTOTYPE_UPDREF(thr, (duk_hobject *) h_res, NULL); /* Function templates are "bare objects". */ - - if (func->is_function) { - DUK_DDD(DUK_DDDPRINT("function -> set NEWENV")); - DUK_HOBJECT_SET_NEWENV((duk_hobject *) h_res); - - if (!func->is_arguments_shadowed) { - /* arguments object would be accessible; note that shadowing - * bindings are arguments or function declarations, neither - * of which are deletable, so this is safe. - */ - - if (func->id_access_arguments || func->may_direct_eval) { - DUK_DDD(DUK_DDDPRINT("function may access 'arguments' object directly or " - "indirectly -> set CREATEARGS")); - DUK_HOBJECT_SET_CREATEARGS((duk_hobject *) h_res); - } - } - } else if (func->is_eval && func->is_strict) { - DUK_DDD(DUK_DDDPRINT("strict eval code -> set NEWENV")); - DUK_HOBJECT_SET_NEWENV((duk_hobject *) h_res); - } else { - /* non-strict eval: env is caller's env or global env (direct vs. indirect call) - * global code: env is is global env - */ - DUK_DDD(DUK_DDDPRINT("non-strict eval code or global code -> no NEWENV")); - DUK_ASSERT(!DUK_HOBJECT_HAS_NEWENV((duk_hobject *) h_res)); - } - -#if defined(DUK_USE_FUNC_NAME_PROPERTY) - if (func->is_function && func->is_namebinding && func->h_name != NULL) { - /* Object literal set/get functions have a name (property - * name) but must not have a lexical name binding, see - * test-bug-getset-func-name.js. - */ - DUK_DDD(DUK_DDDPRINT("function expression with a name -> set NAMEBINDING")); - DUK_HOBJECT_SET_NAMEBINDING((duk_hobject *) h_res); - } -#endif - - if (func->is_strict) { - DUK_DDD(DUK_DDDPRINT("function is strict -> set STRICT")); - DUK_HOBJECT_SET_STRICT((duk_hobject *) h_res); - } - - if (func->is_notail) { - DUK_DDD(DUK_DDDPRINT("function is notail -> set NOTAIL")); - DUK_HOBJECT_SET_NOTAIL((duk_hobject *) h_res); - } - - if (func->is_constructable) { - DUK_DDD(DUK_DDDPRINT("function is constructable -> set CONSTRUCTABLE")); - DUK_HOBJECT_SET_CONSTRUCTABLE((duk_hobject *) h_res); - } - - /* - * Build function fixed size 'data' buffer, which contains bytecode, - * constants, and inner function references. - * - * During the building phase 'data' is reachable but incomplete. - * Only incref's occur during building (no refzero or GC happens), - * so the building process is atomic. - */ - - consts_count = duk_hobject_get_length(thr, func->h_consts); - funcs_count = duk_hobject_get_length(thr, func->h_funcs) / 3; - code_count = DUK_BW_GET_SIZE(thr, &func->bw_code) / sizeof(duk_compiler_instr); - code_size = code_count * sizeof(duk_instr_t); - - data_size = consts_count * sizeof(duk_tval) + funcs_count * sizeof(duk_hobject *) + code_size; - - DUK_DDD(DUK_DDDPRINT("consts_count=%ld, funcs_count=%ld, code_size=%ld -> " - "data_size=%ld*%ld + %ld*%ld + %ld = %ld", - (long) consts_count, - (long) funcs_count, - (long) code_size, - (long) consts_count, - (long) sizeof(duk_tval), - (long) funcs_count, - (long) sizeof(duk_hobject *), - (long) code_size, - (long) data_size)); - - duk_push_fixed_buffer_nozero(thr, data_size); - h_data = (duk_hbuffer_fixed *) (void *) duk_known_hbuffer(thr, -1); - - DUK_HCOMPFUNC_SET_DATA(thr->heap, h_res, (duk_hbuffer *) h_data); - DUK_HEAPHDR_INCREF(thr, h_data); - - p_const = (duk_tval *) (void *) DUK_HBUFFER_FIXED_GET_DATA_PTR(thr->heap, h_data); - for (i = 0; i < consts_count; i++) { - DUK_ASSERT(i <= DUK_UARRIDX_MAX); /* const limits */ - tv = duk_hobject_find_array_entry_tval_ptr(thr->heap, func->h_consts, (duk_uarridx_t) i); - DUK_ASSERT(tv != NULL); - DUK_TVAL_SET_TVAL(p_const, tv); - p_const++; - DUK_TVAL_INCREF(thr, tv); /* may be a string constant */ - - DUK_DDD(DUK_DDDPRINT("constant: %!T", (duk_tval *) tv)); - } - - p_func = (duk_hobject **) p_const; - DUK_HCOMPFUNC_SET_FUNCS(thr->heap, h_res, p_func); - for (i = 0; i < funcs_count; i++) { - duk_hobject *h; - DUK_ASSERT(i * 3 <= DUK_UARRIDX_MAX); /* func limits */ - tv = duk_hobject_find_array_entry_tval_ptr(thr->heap, func->h_funcs, (duk_uarridx_t) (i * 3)); - DUK_ASSERT(tv != NULL); - DUK_ASSERT(DUK_TVAL_IS_OBJECT(tv)); - h = DUK_TVAL_GET_OBJECT(tv); - DUK_ASSERT(h != NULL); - DUK_ASSERT(DUK_HOBJECT_IS_COMPFUNC(h)); - *p_func++ = h; - DUK_HOBJECT_INCREF(thr, h); - - DUK_DDD(DUK_DDDPRINT("inner function: %p -> %!iO", (void *) h, (duk_heaphdr *) h)); - } - - p_instr = (duk_instr_t *) p_func; - DUK_HCOMPFUNC_SET_BYTECODE(thr->heap, h_res, p_instr); - - /* copy bytecode instructions one at a time */ - q_instr = (duk_compiler_instr *) (void *) DUK_BW_GET_BASEPTR(thr, &func->bw_code); - for (i = 0; i < code_count; i++) { - p_instr[i] = q_instr[i].ins; - } - /* Note: 'q_instr' is still used below */ - - DUK_ASSERT((duk_uint8_t *) (p_instr + code_count) == DUK_HBUFFER_FIXED_GET_DATA_PTR(thr->heap, h_data) + data_size); - - duk_pop(thr); /* 'data' (and everything in it) is reachable through h_res now */ - - /* - * Init non-property result fields - * - * 'nregs' controls how large a register frame is allocated. - * - * 'nargs' controls how many formal arguments are written to registers: - * r0, ... r(nargs-1). The remaining registers are initialized to - * undefined. - */ - - DUK_ASSERT(func->temp_max >= 0); - h_res->nregs = (duk_uint16_t) func->temp_max; - h_res->nargs = (duk_uint16_t) duk_hobject_get_length(thr, func->h_argnames); - DUK_ASSERT(h_res->nregs >= h_res->nargs); /* pass2 allocation handles this */ -#if defined(DUK_USE_DEBUGGER_SUPPORT) - h_res->start_line = (duk_uint32_t) func->min_line; - h_res->end_line = (duk_uint32_t) func->max_line; -#endif - - /* - * Init object properties - * - * Properties should be added in decreasing order of access frequency. - * (Not very critical for function templates.) - */ - - DUK_DDD(DUK_DDDPRINT("init function properties")); - - /* [ ... res ] */ - - /* _Varmap: omitted if function is guaranteed not to do a slow path - * identifier access that might be caught by locally declared variables. - * The varmap can also be omitted if it turns out empty of actual - * register mappings after a cleanup. When debugging is enabled, we - * always need the varmap to be able to lookup variables at any point. - */ - -#if defined(DUK_USE_DEBUGGER_SUPPORT) - DUK_DD(DUK_DDPRINT("keeping _Varmap because debugger support is enabled")); - keep_varmap = 1; -#else - if (func->id_access_slow_own || /* directly uses slow accesses that may match own variables */ - func->id_access_arguments || /* accesses 'arguments' directly */ - func->may_direct_eval || /* may indirectly slow access through a direct eval */ - funcs_count > - 0) { /* has inner functions which may slow access (XXX: this can be optimized by looking at the inner functions) */ - DUK_DD(DUK_DDPRINT("keeping _Varmap because of direct eval, slow path access that may match local variables, or " - "presence of inner functions")); - keep_varmap = 1; - } else { - DUK_DD(DUK_DDPRINT("dropping _Varmap")); - keep_varmap = 0; - } -#endif - - if (keep_varmap) { - duk_int_t num_used; - duk_dup(thr, func->varmap_idx); - num_used = duk__cleanup_varmap(comp_ctx); - DUK_DDD(DUK_DDDPRINT("cleaned up varmap: %!T (num_used=%ld)", (duk_tval *) duk_get_tval(thr, -1), (long) num_used)); - - if (num_used > 0) { - duk_xdef_prop_stridx_short(thr, -2, DUK_STRIDX_INT_VARMAP, DUK_PROPDESC_FLAGS_NONE); - } else { - DUK_DD(DUK_DDPRINT("varmap is empty after cleanup -> no need to add")); - duk_pop(thr); - } - } - - /* _Formals: omitted if function is guaranteed not to need a (non-strict) - * arguments object, and _Formals.length matches nargs exactly. - * - * Non-arrow functions can't see an outer function's 'argument' binding - * (because they have their own), but arrow functions can. When arrow - * functions are added, this condition would need to be added: - * inner_arrow_funcs_count > 0 inner arrow functions may access 'arguments' - */ -#if defined(DUK_USE_DEBUGGER_SUPPORT) - DUK_DD(DUK_DDPRINT("keeping _Formals because debugger support is enabled")); - keep_formals = 1; -#else - formals_length = duk_get_length(thr, func->argnames_idx); - if (formals_length != (duk_size_t) h_res->nargs) { - /* Nargs not enough for closure .length: keep _Formals regardless - * of its length. Shouldn't happen in practice at the moment. - */ - DUK_DD(DUK_DDPRINT("keeping _Formals because _Formals.length != nargs")); - keep_formals = 1; - } else if ((func->id_access_arguments || func->may_direct_eval) && (formals_length > 0)) { - /* Direct eval (may access 'arguments') or accesses 'arguments' - * explicitly: keep _Formals unless it is zero length. - */ - DUK_DD(DUK_DDPRINT( - "keeping _Formals because of direct eval or explicit access to 'arguments', and _Formals.length != 0")); - keep_formals = 1; - } else { - DUK_DD(DUK_DDPRINT("omitting _Formals, nargs matches _Formals.length, so no properties added")); - keep_formals = 0; - } -#endif - - if (keep_formals) { - duk_dup(thr, func->argnames_idx); - duk_xdef_prop_stridx_short(thr, -2, DUK_STRIDX_INT_FORMALS, DUK_PROPDESC_FLAGS_NONE); - } - - /* name */ -#if defined(DUK_USE_FUNC_NAME_PROPERTY) - if (func->h_name) { - duk_push_hstring(thr, func->h_name); - DUK_DD(DUK_DDPRINT("setting function template .name to %!T", duk_get_tval(thr, -1))); - duk_xdef_prop_stridx_short(thr, -2, DUK_STRIDX_NAME, DUK_PROPDESC_FLAGS_NONE); - } -#endif /* DUK_USE_FUNC_NAME_PROPERTY */ - - /* _Source */ -#if defined(DUK_USE_NONSTD_FUNC_SOURCE_PROPERTY) - if (0) { - /* XXX: Currently function source code is not stored, as it is not - * required by the standard. Source code should not be stored by - * default (user should enable it explicitly), and the source should - * probably be compressed with a trivial text compressor; average - * compression of 20-30% is quite easy to achieve even with a trivial - * compressor (RLE + backwards lookup). - * - * Debugging needs source code to be useful: sometimes input code is - * not found in files as it may be generated and then eval()'d, given - * by dynamic C code, etc. - * - * Other issues: - * - * - Need tokenizer indices for start and end to substring - * - Always normalize function declaration part? - * - If we keep _Formals, only need to store body - */ - - /* - * For global or eval code this is straightforward. For functions - * created with the Function constructor we only get the source for - * the body and must manufacture the "function ..." part. - * - * For instance, for constructed functions (v8): - * - * > a = new Function("foo", "bar", "print(foo)"); - * [Function] - * > a.toString() - * 'function anonymous(foo,bar) {\nprint(foo)\n}' - * - * Similarly for e.g. getters (v8): - * - * > x = { get a(foo,bar) { print(foo); } } - * { a: [Getter] } - * > Object.getOwnPropertyDescriptor(x, 'a').get.toString() - * 'function a(foo,bar) { print(foo); }' - */ - -#if 0 - duk_push_literal(thr, "XXX"); - duk_xdef_prop_stridx_short(thr, -2, DUK_STRIDX_INT_SOURCE, DUK_PROPDESC_FLAGS_NONE); -#endif - } -#endif /* DUK_USE_NONSTD_FUNC_SOURCE_PROPERTY */ - - /* _Pc2line */ -#if defined(DUK_USE_PC2LINE) - if (1) { - /* - * Size-optimized pc->line mapping. - */ - - DUK_ASSERT(code_count <= DUK_COMPILER_MAX_BYTECODE_LENGTH); - duk_hobject_pc2line_pack(thr, q_instr, (duk_uint_fast32_t) code_count); /* -> pushes fixed buffer */ - duk_xdef_prop_stridx_short(thr, -2, DUK_STRIDX_INT_PC2LINE, DUK_PROPDESC_FLAGS_NONE); - - /* XXX: if assertions enabled, walk through all valid PCs - * and check line mapping. - */ - } -#endif /* DUK_USE_PC2LINE */ - - /* fileName */ -#if defined(DUK_USE_FUNC_FILENAME_PROPERTY) - if (comp_ctx->h_filename) { - /* - * Source filename (or equivalent), for identifying thrown errors. - */ - - duk_push_hstring(thr, comp_ctx->h_filename); - duk_xdef_prop_stridx_short(thr, -2, DUK_STRIDX_FILE_NAME, DUK_PROPDESC_FLAGS_NONE); - } -#endif - - DUK_DD(DUK_DDPRINT("converted function: %!ixT", (duk_tval *) duk_get_tval(thr, -1))); - - /* - * Compact the function template. - */ - - duk_compact_m1(thr); - - /* - * Debug dumping - */ - -#if defined(DUK_USE_DEBUG_LEVEL) && (DUK_USE_DEBUG_LEVEL >= 2) - { - duk_hcompfunc *h; - duk_instr_t *p, *p_start, *p_end; - - h = (duk_hcompfunc *) duk_get_hobject(thr, -1); - p_start = (duk_instr_t *) DUK_HCOMPFUNC_GET_CODE_BASE(thr->heap, h); - p_end = (duk_instr_t *) DUK_HCOMPFUNC_GET_CODE_END(thr->heap, h); - - p = p_start; - while (p < p_end) { - DUK_DDD(DUK_DDDPRINT("BC %04ld: %!I ; 0x%08lx op=%ld (%!X) a=%ld b=%ld c=%ld", - (long) (p - p_start), - (duk_instr_t) (*p), - (unsigned long) (*p), - (long) DUK_DEC_OP(*p), - (long) DUK_DEC_OP(*p), - (long) DUK_DEC_A(*p), - (long) DUK_DEC_B(*p), - (long) DUK_DEC_C(*p))); - p++; - } - } -#endif -} - -/* - * Code emission helpers - * - * Some emission helpers understand the range of target and source reg/const - * values and automatically emit shuffling code if necessary. This is the - * case when the slot in question (A, B, C) is used in the standard way and - * for opcodes the emission helpers explicitly understand (like DUK_OP_MPUTOBJ). - * - * The standard way is that: - * - slot A is a target register - * - slot B is a source register/constant - * - slot C is a source register/constant - * - * If a slot is used in a non-standard way the caller must indicate this - * somehow. If a slot is used as a target instead of a source (or vice - * versa), this can be indicated with a flag to trigger proper shuffling - * (e.g. DUK__EMIT_FLAG_B_IS_TARGET). If the value in the slot is not - * register/const related at all, the caller must ensure that the raw value - * fits into the corresponding slot so as to not trigger shuffling. The - * caller must set a "no shuffle" flag to ensure compilation fails if - * shuffling were to be triggered because of an internal error. - * - * For slots B and C the raw slot size is 9 bits but one bit is reserved for - * the reg/const indicator. To use the full 9-bit range for a raw value, - * shuffling must be disabled with the DUK__EMIT_FLAG_NO_SHUFFLE_{B,C} flag. - * Shuffling is only done for A, B, and C slots, not the larger BC or ABC slots. - * - * There is call handling specific understanding in the A-B-C emitter to - * convert call setup and call instructions into indirect ones if necessary. - */ - -/* Code emission flags, passed in the 'opcode' field. Opcode + flags - * fit into 16 bits for now, so use duk_small_uint_t. - */ -#define DUK__EMIT_FLAG_NO_SHUFFLE_A (1 << 8) -#define DUK__EMIT_FLAG_NO_SHUFFLE_B (1 << 9) -#define DUK__EMIT_FLAG_NO_SHUFFLE_C (1 << 10) -#define DUK__EMIT_FLAG_A_IS_SOURCE (1 << 11) /* slot A is a source (default: target) */ -#define DUK__EMIT_FLAG_B_IS_TARGET (1 << 12) /* slot B is a target (default: source) */ -#define DUK__EMIT_FLAG_C_IS_TARGET (1 << 13) /* slot C is a target (default: source) */ -#define DUK__EMIT_FLAG_BC_REGCONST (1 << 14) /* slots B and C are reg/const */ -#define DUK__EMIT_FLAG_RESERVE_JUMPSLOT (1 << 15) /* reserve a jumpslot after instr before target spilling, used for NEXTENUM */ - -/* XXX: macro smaller than call? */ -DUK_LOCAL duk_int_t duk__get_current_pc(duk_compiler_ctx *comp_ctx) { - duk_compiler_func *func; - func = &comp_ctx->curr_func; - return (duk_int_t) (DUK_BW_GET_SIZE(comp_ctx->thr, &func->bw_code) / sizeof(duk_compiler_instr)); -} - -DUK_LOCAL duk_compiler_instr *duk__get_instr_ptr(duk_compiler_ctx *comp_ctx, duk_int_t pc) { - DUK_ASSERT(pc >= 0); - DUK_ASSERT((duk_size_t) pc < - (duk_size_t) (DUK_BW_GET_SIZE(comp_ctx->thr, &comp_ctx->curr_func.bw_code) / sizeof(duk_compiler_instr))); - return ((duk_compiler_instr *) (void *) DUK_BW_GET_BASEPTR(comp_ctx->thr, &comp_ctx->curr_func.bw_code)) + pc; -} - -/* emit instruction; could return PC but that's not needed in the majority - * of cases. - */ -DUK_LOCAL void duk__emit(duk_compiler_ctx *comp_ctx, duk_instr_t ins) { -#if defined(DUK_USE_PC2LINE) - duk_int_t line; -#endif - duk_compiler_instr *instr; - - DUK_DDD(DUK_DDDPRINT("duk__emit: 0x%08lx curr_token.start_line=%ld prev_token.start_line=%ld pc=%ld --> %!I", - (unsigned long) ins, - (long) comp_ctx->curr_token.start_line, - (long) comp_ctx->prev_token.start_line, - (long) duk__get_current_pc(comp_ctx), - (duk_instr_t) ins)); - - instr = (duk_compiler_instr *) (void *) DUK_BW_ENSURE_GETPTR(comp_ctx->thr, - &comp_ctx->curr_func.bw_code, - sizeof(duk_compiler_instr)); - DUK_BW_ADD_PTR(comp_ctx->thr, &comp_ctx->curr_func.bw_code, sizeof(duk_compiler_instr)); - -#if defined(DUK_USE_PC2LINE) - /* The line number tracking is a bit inconsistent right now, which - * affects debugger accuracy. Mostly call sites emit opcodes when - * they have parsed a token (say a terminating semicolon) and called - * duk__advance(). In this case the line number of the previous - * token is the most accurate one (except in prologue where - * prev_token.start_line is 0). This is probably not 100% correct - * right now. - */ - /* approximation, close enough */ - line = comp_ctx->prev_token.start_line; - if (line == 0) { - line = comp_ctx->curr_token.start_line; - } -#endif - - instr->ins = ins; -#if defined(DUK_USE_PC2LINE) - instr->line = (duk_uint32_t) line; -#endif -#if defined(DUK_USE_DEBUGGER_SUPPORT) - if (line < comp_ctx->curr_func.min_line) { - comp_ctx->curr_func.min_line = line; - } - if (line > comp_ctx->curr_func.max_line) { - comp_ctx->curr_func.max_line = line; - } -#endif - - /* Limit checks for bytecode byte size and line number. */ - if (DUK_UNLIKELY(DUK_BW_GET_SIZE(comp_ctx->thr, &comp_ctx->curr_func.bw_code) > DUK_USE_ESBC_MAX_BYTES)) { - goto fail_bc_limit; - } -#if defined(DUK_USE_PC2LINE) && defined(DUK_USE_ESBC_LIMITS) -#if defined(DUK_USE_BUFLEN16) - /* Buffer length is bounded to 0xffff automatically, avoid compile warning. */ - if (DUK_UNLIKELY(line > DUK_USE_ESBC_MAX_LINENUMBER)) { - goto fail_bc_limit; - } -#else - if (DUK_UNLIKELY(line > DUK_USE_ESBC_MAX_LINENUMBER)) { - goto fail_bc_limit; - } -#endif -#endif - - return; - -fail_bc_limit: - DUK_ERROR_RANGE(comp_ctx->thr, DUK_STR_BYTECODE_LIMIT); - DUK_WO_NORETURN(return;); -} - -/* Update function min/max line from current token. Needed to improve - * function line range information for debugging, so that e.g. opening - * curly brace is covered by line range even when no opcodes are emitted - * for the line containing the brace. - */ -DUK_LOCAL void duk__update_lineinfo_currtoken(duk_compiler_ctx *comp_ctx) { -#if defined(DUK_USE_DEBUGGER_SUPPORT) - duk_int_t line; - - line = comp_ctx->curr_token.start_line; - if (line == 0) { - return; - } - if (line < comp_ctx->curr_func.min_line) { - comp_ctx->curr_func.min_line = line; - } - if (line > comp_ctx->curr_func.max_line) { - comp_ctx->curr_func.max_line = line; - } -#else - DUK_UNREF(comp_ctx); -#endif -} - -DUK_LOCAL void duk__emit_op_only(duk_compiler_ctx *comp_ctx, duk_small_uint_t op) { - duk__emit(comp_ctx, DUK_ENC_OP_ABC(op, 0)); -} - -/* Important main primitive. */ -DUK_LOCAL void duk__emit_a_b_c(duk_compiler_ctx *comp_ctx, - duk_small_uint_t op_flags, - duk_regconst_t a, - duk_regconst_t b, - duk_regconst_t c) { - duk_instr_t ins = 0; - duk_int_t a_out = -1; - duk_int_t b_out = -1; - duk_int_t c_out = -1; - duk_int_t tmp; - duk_small_uint_t op = op_flags & 0xffU; - - DUK_DDD(DUK_DDDPRINT("emit: op_flags=%04lx, a=%ld, b=%ld, c=%ld", (unsigned long) op_flags, (long) a, (long) b, (long) c)); - - /* We could rely on max temp/const checks: if they don't exceed BC - * limit, nothing here can either (just asserts would be enough). - * Currently we check for the limits, which provides additional - * protection against creating invalid bytecode due to compiler - * bugs. - */ - - DUK_ASSERT_DISABLE((op_flags & 0xff) >= DUK_BC_OP_MIN); /* unsigned */ - DUK_ASSERT((op_flags & 0xff) <= DUK_BC_OP_MAX); - DUK_ASSERT(DUK__ISREG(a)); - DUK_ASSERT(b != -1); /* Not 'none'. */ - DUK_ASSERT(c != -1); /* Not 'none'. */ - - /* Input shuffling happens before the actual operation, while output - * shuffling happens afterwards. Output shuffling decisions are still - * made at the same time to reduce branch clutter; output shuffle decisions - * are recorded into X_out variables. - */ - - /* Slot A: currently no support for reg/const. */ - -#if defined(DUK_USE_SHUFFLE_TORTURE) - if (a <= DUK_BC_A_MAX && (op_flags & DUK__EMIT_FLAG_NO_SHUFFLE_A)) { -#else - if (a <= DUK_BC_A_MAX) { -#endif - ; - } else if (op_flags & DUK__EMIT_FLAG_NO_SHUFFLE_A) { - DUK_D(DUK_DPRINT("out of regs: 'a' (reg) needs shuffling but shuffle prohibited, a: %ld", (long) a)); - goto error_outofregs; - } else if (a <= DUK_BC_BC_MAX) { - comp_ctx->curr_func.needs_shuffle = 1; - tmp = comp_ctx->curr_func.shuffle1; - if (op_flags & DUK__EMIT_FLAG_A_IS_SOURCE) { - duk__emit(comp_ctx, DUK_ENC_OP_A_BC(DUK_OP_LDREG, tmp, a)); - } else { - /* Output shuffle needed after main operation */ - a_out = a; - - /* The DUK_OP_CSVAR output shuffle assumes shuffle registers are - * consecutive. - */ - DUK_ASSERT((comp_ctx->curr_func.shuffle1 == 0 && comp_ctx->curr_func.shuffle2 == 0) || - (comp_ctx->curr_func.shuffle2 == comp_ctx->curr_func.shuffle1 + 1)); - if (op == DUK_OP_CSVAR) { - /* For CSVAR the limit is one smaller because output shuffle - * must be able to express 'a + 1' in BC. - */ - if (a + 1 > DUK_BC_BC_MAX) { - goto error_outofregs; - } - } - } - a = tmp; - } else { - DUK_D(DUK_DPRINT("out of regs: 'a' (reg) needs shuffling but does not fit into BC, a: %ld", (long) a)); - goto error_outofregs; - } - - /* Slot B: reg/const support, mapped to bit 0 of opcode. */ - - if ((b & DUK__CONST_MARKER) != 0) { - DUK_ASSERT((op_flags & DUK__EMIT_FLAG_NO_SHUFFLE_B) == 0); - DUK_ASSERT((op_flags & DUK__EMIT_FLAG_B_IS_TARGET) == 0); - b = b & ~DUK__CONST_MARKER; -#if defined(DUK_USE_SHUFFLE_TORTURE) - if (0) { -#else - if (b <= 0xff) { -#endif - if (op_flags & DUK__EMIT_FLAG_BC_REGCONST) { - /* Opcode follows B/C reg/const convention. */ - DUK_ASSERT((op & 0x01) == 0); - ins |= DUK_ENC_OP_A_B_C(0x01, 0, 0, 0); /* const flag for B */ - } else { - DUK_D(DUK_DPRINT("B is const, opcode is not B/C reg/const: %x", op_flags)); - } - } else if (b <= DUK_BC_BC_MAX) { - comp_ctx->curr_func.needs_shuffle = 1; - tmp = comp_ctx->curr_func.shuffle2; - duk__emit(comp_ctx, DUK_ENC_OP_A_BC(DUK_OP_LDCONST, tmp, b)); - b = tmp; - } else { - DUK_D(DUK_DPRINT("out of regs: 'b' (const) needs shuffling but does not fit into BC, b: %ld", (long) b)); - goto error_outofregs; - } - } else { -#if defined(DUK_USE_SHUFFLE_TORTURE) - if (b <= 0xff && (op_flags & DUK__EMIT_FLAG_NO_SHUFFLE_B)) { -#else - if (b <= 0xff) { -#endif - ; - } else if (op_flags & DUK__EMIT_FLAG_NO_SHUFFLE_B) { - if (b > DUK_BC_B_MAX) { - /* Note: 0xff != DUK_BC_B_MAX */ - DUK_D( - DUK_DPRINT("out of regs: 'b' (reg) needs shuffling but shuffle prohibited, b: %ld", (long) b)); - goto error_outofregs; - } - } else if (b <= DUK_BC_BC_MAX) { - comp_ctx->curr_func.needs_shuffle = 1; - tmp = comp_ctx->curr_func.shuffle2; - if (op_flags & DUK__EMIT_FLAG_B_IS_TARGET) { - /* Output shuffle needed after main operation */ - b_out = b; - } - if (!(op_flags & DUK__EMIT_FLAG_B_IS_TARGET)) { - if (op == DUK_OP_MPUTOBJ || op == DUK_OP_MPUTARR) { - /* Special handling for MPUTOBJ/MPUTARR shuffling. - * For each, slot B identifies the first register of a range - * of registers, so normal shuffling won't work. Instead, - * an indirect version of the opcode is used. - */ - DUK_ASSERT((op_flags & DUK__EMIT_FLAG_B_IS_TARGET) == 0); - duk__emit_load_int32_noshuffle(comp_ctx, tmp, b); - DUK_ASSERT(DUK_OP_MPUTOBJI == DUK_OP_MPUTOBJ + 1); - DUK_ASSERT(DUK_OP_MPUTARRI == DUK_OP_MPUTARR + 1); - op_flags++; /* indirect opcode follows direct */ - } else { - duk__emit(comp_ctx, DUK_ENC_OP_A_BC(DUK_OP_LDREG, tmp, b)); - } - } - b = tmp; - } else { - DUK_D(DUK_DPRINT("out of regs: 'b' (reg) needs shuffling but does not fit into BC, b: %ld", (long) b)); - goto error_outofregs; - } - } - - /* Slot C: reg/const support, mapped to bit 1 of opcode. */ - - if ((c & DUK__CONST_MARKER) != 0) { - DUK_ASSERT((op_flags & DUK__EMIT_FLAG_NO_SHUFFLE_C) == 0); - DUK_ASSERT((op_flags & DUK__EMIT_FLAG_C_IS_TARGET) == 0); - c = c & ~DUK__CONST_MARKER; -#if defined(DUK_USE_SHUFFLE_TORTURE) - if (0) { -#else - if (c <= 0xff) { -#endif - if (op_flags & DUK__EMIT_FLAG_BC_REGCONST) { - /* Opcode follows B/C reg/const convention. */ - DUK_ASSERT((op & 0x02) == 0); - ins |= DUK_ENC_OP_A_B_C(0x02, 0, 0, 0); /* const flag for C */ - } else { - DUK_D(DUK_DPRINT("C is const, opcode is not B/C reg/const: %x", op_flags)); - } - } else if (c <= DUK_BC_BC_MAX) { - comp_ctx->curr_func.needs_shuffle = 1; - tmp = comp_ctx->curr_func.shuffle3; - duk__emit(comp_ctx, DUK_ENC_OP_A_BC(DUK_OP_LDCONST, tmp, c)); - c = tmp; - } else { - DUK_D(DUK_DPRINT("out of regs: 'c' (const) needs shuffling but does not fit into BC, c: %ld", (long) c)); - goto error_outofregs; - } - } else { -#if defined(DUK_USE_SHUFFLE_TORTURE) - if (c <= 0xff && (op_flags & DUK__EMIT_FLAG_NO_SHUFFLE_C)) { -#else - if (c <= 0xff) { -#endif - ; - } else if (op_flags & DUK__EMIT_FLAG_NO_SHUFFLE_C) { - if (c > DUK_BC_C_MAX) { - /* Note: 0xff != DUK_BC_C_MAX */ - DUK_D( - DUK_DPRINT("out of regs: 'c' (reg) needs shuffling but shuffle prohibited, c: %ld", (long) c)); - goto error_outofregs; - } - } else if (c <= DUK_BC_BC_MAX) { - comp_ctx->curr_func.needs_shuffle = 1; - tmp = comp_ctx->curr_func.shuffle3; - if (op_flags & DUK__EMIT_FLAG_C_IS_TARGET) { - /* Output shuffle needed after main operation */ - c_out = c; - } else { - duk__emit(comp_ctx, DUK_ENC_OP_A_BC(DUK_OP_LDREG, tmp, c)); - } - c = tmp; - } else { - DUK_D(DUK_DPRINT("out of regs: 'c' (reg) needs shuffling but does not fit into BC, c: %ld", (long) c)); - goto error_outofregs; - } - } - - /* Main operation */ - - DUK_ASSERT(a >= DUK_BC_A_MIN); - DUK_ASSERT(a <= DUK_BC_A_MAX); - DUK_ASSERT(b >= DUK_BC_B_MIN); - DUK_ASSERT(b <= DUK_BC_B_MAX); - DUK_ASSERT(c >= DUK_BC_C_MIN); - DUK_ASSERT(c <= DUK_BC_C_MAX); - - ins |= DUK_ENC_OP_A_B_C(op_flags & 0xff, a, b, c); - duk__emit(comp_ctx, ins); - - /* NEXTENUM needs a jump slot right after the main instruction. - * When the JUMP is taken, output spilling is not needed so this - * workaround is possible. The jump slot PC is exceptionally - * plumbed through comp_ctx to minimize call sites. - */ - if (op_flags & DUK__EMIT_FLAG_RESERVE_JUMPSLOT) { - comp_ctx->emit_jumpslot_pc = duk__get_current_pc(comp_ctx); - duk__emit_abc(comp_ctx, DUK_OP_JUMP, 0); - } - - /* Output shuffling: only one output register is realistically possible. - * - * (Zero would normally be an OK marker value: if the target register - * was zero, it would never be shuffled. But with DUK_USE_SHUFFLE_TORTURE - * this is no longer true, so use -1 as a marker instead.) - */ - - if (a_out >= 0) { - DUK_ASSERT(b_out < 0); - DUK_ASSERT(c_out < 0); - duk__emit(comp_ctx, DUK_ENC_OP_A_BC(DUK_OP_STREG, a, a_out)); - - if (op == DUK_OP_CSVAR) { - /* Special handling for CSVAR shuffling. The variable lookup - * results in a pair in successive - * registers so use two shuffle registers and two output - * loads. (In practice this is dead code because temp/const - * limit is reached first.) - */ - duk__emit(comp_ctx, DUK_ENC_OP_A_BC(DUK_OP_STREG, a + 1, a_out + 1)); - } - } else if (b_out >= 0) { - DUK_ASSERT(a_out < 0); - DUK_ASSERT(c_out < 0); - duk__emit(comp_ctx, DUK_ENC_OP_A_BC(DUK_OP_STREG, b, b_out)); - } else if (c_out >= 0) { - DUK_ASSERT(b_out < 0); - DUK_ASSERT(c_out < 0); - duk__emit(comp_ctx, DUK_ENC_OP_A_BC(DUK_OP_STREG, c, c_out)); - } - - return; - -error_outofregs: - DUK_ERROR_RANGE(comp_ctx->thr, DUK_STR_REG_LIMIT); - DUK_WO_NORETURN(return;); -} - -/* For many of the helpers below it'd be technically correct to add - * "no shuffle" flags for parameters passed in as zero. For example, - * duk__emit_a_b() should call duk__emit_a_b_c() with C set to 0, and - * DUK__EMIT_FLAG_NO_SHUFFLE_C added to op_flags. However, since the - * C value is 0, it'll never get shuffled so adding the flag is just - * unnecessary additional code. This is unfortunately not true for - * "shuffle torture" mode which needs special handling. - */ - -DUK_LOCAL void duk__emit_a_b(duk_compiler_ctx *comp_ctx, duk_small_uint_t op_flags, duk_regconst_t a, duk_regconst_t b) { -#if defined(DUK_USE_SHUFFLE_TORTURE) - op_flags |= DUK__EMIT_FLAG_NO_SHUFFLE_C; -#endif - duk__emit_a_b_c(comp_ctx, op_flags, a, b, 0); -} - -DUK_LOCAL void duk__emit_b_c(duk_compiler_ctx *comp_ctx, duk_small_uint_t op_flags, duk_regconst_t b, duk_regconst_t c) { -#if defined(DUK_USE_SHUFFLE_TORTURE) - op_flags |= DUK__EMIT_FLAG_NO_SHUFFLE_A; -#endif - duk__emit_a_b_c(comp_ctx, op_flags, 0, b, c); -} - -#if 0 /* unused */ -DUK_LOCAL void duk__emit_a(duk_compiler_ctx *comp_ctx, int op_flags, int a) { -#if defined(DUK_USE_SHUFFLE_TORTURE) - op_flags |= DUK__EMIT_FLAG_NO_SHUFFLE_B | DUK__EMIT_FLAG_NO_SHUFFLE_C; -#endif - duk__emit_a_b_c(comp_ctx, op_flags, a, 0, 0); -} -#endif - -#if 0 /* unused */ -DUK_LOCAL void duk__emit_b(duk_compiler_ctx *comp_ctx, duk_small_uint_t op_flags, duk_regconst_t b) { -#if defined(DUK_USE_SHUFFLE_TORTURE) - op_flags |= DUK__EMIT_FLAG_NO_SHUFFLE_A | DUK__EMIT_FLAG_NO_SHUFFLE_C; -#endif - duk__emit_a_b_c(comp_ctx, op_flags, 0, b, 0); -} -#endif - -DUK_LOCAL void duk__emit_a_bc(duk_compiler_ctx *comp_ctx, duk_small_uint_t op_flags, duk_regconst_t a, duk_regconst_t bc) { - duk_instr_t ins; - duk_int_t tmp; - - /* allow caller to give a const number with the DUK__CONST_MARKER */ - DUK_ASSERT(bc != -1); /* Not 'none'. */ - bc = bc & (~DUK__CONST_MARKER); - - DUK_ASSERT_DISABLE((op_flags & 0xff) >= DUK_BC_OP_MIN); /* unsigned */ - DUK_ASSERT((op_flags & 0xff) <= DUK_BC_OP_MAX); - DUK_ASSERT(bc >= DUK_BC_BC_MIN); - DUK_ASSERT(bc <= DUK_BC_BC_MAX); - DUK_ASSERT((bc & DUK__CONST_MARKER) == 0); - - if (bc <= DUK_BC_BC_MAX) { - ; - } else { - /* No BC shuffling now. */ - goto error_outofregs; - } - -#if defined(DUK_USE_SHUFFLE_TORTURE) - if (a <= DUK_BC_A_MAX && (op_flags & DUK__EMIT_FLAG_NO_SHUFFLE_A)) { -#else - if (a <= DUK_BC_A_MAX) { -#endif - ins = DUK_ENC_OP_A_BC(op_flags & 0xff, a, bc); - duk__emit(comp_ctx, ins); - } else if (op_flags & DUK__EMIT_FLAG_NO_SHUFFLE_A) { - goto error_outofregs; - } else if ((op_flags & 0xf0U) == DUK_OP_CALL0) { - comp_ctx->curr_func.needs_shuffle = 1; - tmp = comp_ctx->curr_func.shuffle1; - duk__emit_load_int32_noshuffle(comp_ctx, tmp, a); - op_flags |= DUK_BC_CALL_FLAG_INDIRECT; - ins = DUK_ENC_OP_A_BC(op_flags & 0xff, tmp, bc); - duk__emit(comp_ctx, ins); - } else if (a <= DUK_BC_BC_MAX) { - comp_ctx->curr_func.needs_shuffle = 1; - tmp = comp_ctx->curr_func.shuffle1; - ins = DUK_ENC_OP_A_BC(op_flags & 0xff, tmp, bc); - if (op_flags & DUK__EMIT_FLAG_A_IS_SOURCE) { - duk__emit(comp_ctx, DUK_ENC_OP_A_BC(DUK_OP_LDREG, tmp, a)); - duk__emit(comp_ctx, ins); - } else { - duk__emit(comp_ctx, ins); - duk__emit(comp_ctx, DUK_ENC_OP_A_BC(DUK_OP_STREG, tmp, a)); - } - } else { - goto error_outofregs; - } - return; - -error_outofregs: - DUK_ERROR_RANGE(comp_ctx->thr, DUK_STR_REG_LIMIT); - DUK_WO_NORETURN(return;); -} - -DUK_LOCAL void duk__emit_bc(duk_compiler_ctx *comp_ctx, duk_small_uint_t op, duk_regconst_t bc) { -#if defined(DUK_USE_SHUFFLE_TORTURE) - op |= DUK__EMIT_FLAG_NO_SHUFFLE_A; -#endif - duk__emit_a_bc(comp_ctx, op, 0, bc); -} - -DUK_LOCAL void duk__emit_abc(duk_compiler_ctx *comp_ctx, duk_small_uint_t op, duk_regconst_t abc) { - duk_instr_t ins; - - DUK_ASSERT_DISABLE(op >= DUK_BC_OP_MIN); /* unsigned */ - DUK_ASSERT(op <= DUK_BC_OP_MAX); - DUK_ASSERT_DISABLE(abc >= DUK_BC_ABC_MIN); /* unsigned */ - DUK_ASSERT(abc <= DUK_BC_ABC_MAX); - DUK_ASSERT((abc & DUK__CONST_MARKER) == 0); - DUK_ASSERT(abc != -1); /* Not 'none'. */ - - if (abc <= DUK_BC_ABC_MAX) { - ; - } else { - goto error_outofregs; - } - ins = DUK_ENC_OP_ABC(op, abc); - DUK_DDD(DUK_DDDPRINT("duk__emit_abc: 0x%08lx line=%ld pc=%ld op=%ld (%!X) abc=%ld (%!I)", - (unsigned long) ins, - (long) comp_ctx->curr_token.start_line, - (long) duk__get_current_pc(comp_ctx), - (long) op, - (long) op, - (long) abc, - (duk_instr_t) ins)); - duk__emit(comp_ctx, ins); - return; - -error_outofregs: - DUK_ERROR_RANGE(comp_ctx->thr, DUK_STR_REG_LIMIT); - DUK_WO_NORETURN(return;); -} - -DUK_LOCAL void duk__emit_load_int32_raw(duk_compiler_ctx *comp_ctx, - duk_regconst_t reg, - duk_int32_t val, - duk_small_uint_t op_flags) { - /* XXX: Shuffling support could be implemented here so that LDINT+LDINTX - * would only shuffle once (instead of twice). The current code works - * though, and has a smaller compiler footprint. - */ - - if ((val >= (duk_int32_t) DUK_BC_BC_MIN - (duk_int32_t) DUK_BC_LDINT_BIAS) && - (val <= (duk_int32_t) DUK_BC_BC_MAX - (duk_int32_t) DUK_BC_LDINT_BIAS)) { - DUK_DDD(DUK_DDDPRINT("emit LDINT to reg %ld for %ld", (long) reg, (long) val)); - duk__emit_a_bc(comp_ctx, DUK_OP_LDINT | op_flags, reg, (duk_regconst_t) (val + (duk_int32_t) DUK_BC_LDINT_BIAS)); - } else { - duk_int32_t hi = val >> DUK_BC_LDINTX_SHIFT; - duk_int32_t lo = val & ((((duk_int32_t) 1) << DUK_BC_LDINTX_SHIFT) - 1); - DUK_ASSERT(lo >= 0); - DUK_DDD(DUK_DDDPRINT("emit LDINT+LDINTX to reg %ld for %ld -> hi %ld, lo %ld", - (long) reg, - (long) val, - (long) hi, - (long) lo)); - duk__emit_a_bc(comp_ctx, DUK_OP_LDINT | op_flags, reg, (duk_regconst_t) (hi + (duk_int32_t) DUK_BC_LDINT_BIAS)); - duk__emit_a_bc(comp_ctx, DUK_OP_LDINTX | op_flags, reg, (duk_regconst_t) lo); - } -} - -DUK_LOCAL void duk__emit_load_int32(duk_compiler_ctx *comp_ctx, duk_regconst_t reg, duk_int32_t val) { - duk__emit_load_int32_raw(comp_ctx, reg, val, 0 /*op_flags*/); -} - -#if defined(DUK_USE_SHUFFLE_TORTURE) -/* Used by duk__emit*() calls so that we don't shuffle the loadints that - * are needed to handle indirect opcodes. - */ -DUK_LOCAL void duk__emit_load_int32_noshuffle(duk_compiler_ctx *comp_ctx, duk_regconst_t reg, duk_int32_t val) { - duk__emit_load_int32_raw(comp_ctx, reg, val, DUK__EMIT_FLAG_NO_SHUFFLE_A /*op_flags*/); -} -#else -DUK_LOCAL void duk__emit_load_int32_noshuffle(duk_compiler_ctx *comp_ctx, duk_regconst_t reg, duk_int32_t val) { - /* When torture not enabled, can just use the same helper because - * 'reg' won't get spilled. - */ - DUK_ASSERT(reg <= DUK_BC_A_MAX); - duk__emit_load_int32(comp_ctx, reg, val); -} -#endif - -DUK_LOCAL void duk__emit_jump(duk_compiler_ctx *comp_ctx, duk_int_t target_pc) { - duk_int_t curr_pc; - duk_int_t offset; - - curr_pc = (duk_int_t) (DUK_BW_GET_SIZE(comp_ctx->thr, &comp_ctx->curr_func.bw_code) / sizeof(duk_compiler_instr)); - offset = (duk_int_t) target_pc - (duk_int_t) curr_pc - 1; - DUK_ASSERT(offset + DUK_BC_JUMP_BIAS >= DUK_BC_ABC_MIN); - DUK_ASSERT(offset + DUK_BC_JUMP_BIAS <= DUK_BC_ABC_MAX); - duk__emit_abc(comp_ctx, DUK_OP_JUMP, (duk_regconst_t) (offset + DUK_BC_JUMP_BIAS)); -} - -DUK_LOCAL duk_int_t duk__emit_jump_empty(duk_compiler_ctx *comp_ctx) { - duk_int_t ret; - - ret = duk__get_current_pc(comp_ctx); /* useful for patching jumps later */ - duk__emit_op_only(comp_ctx, DUK_OP_JUMP); - return ret; -} - -/* Insert an empty jump in the middle of code emitted earlier. This is - * currently needed for compiling for-in. - */ -DUK_LOCAL void duk__insert_jump_entry(duk_compiler_ctx *comp_ctx, duk_int_t jump_pc) { -#if defined(DUK_USE_PC2LINE) - duk_int_t line; -#endif - duk_compiler_instr *instr; - duk_size_t offset; - - DUK_ASSERT(jump_pc >= 0); - offset = (duk_size_t) jump_pc * sizeof(duk_compiler_instr); - instr = (duk_compiler_instr *) (void *) - DUK_BW_INSERT_ENSURE_AREA(comp_ctx->thr, &comp_ctx->curr_func.bw_code, offset, sizeof(duk_compiler_instr)); - -#if defined(DUK_USE_PC2LINE) - line = comp_ctx->curr_token.start_line; /* approximation, close enough */ -#endif - instr->ins = DUK_ENC_OP_ABC(DUK_OP_JUMP, 0); -#if defined(DUK_USE_PC2LINE) - instr->line = (duk_uint32_t) line; -#endif - - DUK_BW_ADD_PTR(comp_ctx->thr, &comp_ctx->curr_func.bw_code, sizeof(duk_compiler_instr)); - if (DUK_UNLIKELY(DUK_BW_GET_SIZE(comp_ctx->thr, &comp_ctx->curr_func.bw_code) > DUK_USE_ESBC_MAX_BYTES)) { - goto fail_bc_limit; - } - return; - -fail_bc_limit: - DUK_ERROR_RANGE(comp_ctx->thr, DUK_STR_BYTECODE_LIMIT); - DUK_WO_NORETURN(return;); -} - -/* Does not assume that jump_pc contains a DUK_OP_JUMP previously; this is intentional - * to allow e.g. an INVALID opcode be overwritten with a JUMP (label management uses this). - */ -DUK_LOCAL void duk__patch_jump(duk_compiler_ctx *comp_ctx, duk_int_t jump_pc, duk_int_t target_pc) { - duk_compiler_instr *instr; - duk_int_t offset; - - /* allow negative PCs, behave as a no-op */ - if (jump_pc < 0) { - DUK_DDD( - DUK_DDDPRINT("duk__patch_jump(): nop call, jump_pc=%ld (<0), target_pc=%ld", (long) jump_pc, (long) target_pc)); - return; - } - DUK_ASSERT(jump_pc >= 0); - - /* XXX: range assert */ - instr = duk__get_instr_ptr(comp_ctx, jump_pc); - DUK_ASSERT(instr != NULL); - - /* XXX: range assert */ - offset = target_pc - jump_pc - 1; - - instr->ins = DUK_ENC_OP_ABC(DUK_OP_JUMP, offset + DUK_BC_JUMP_BIAS); - DUK_DDD(DUK_DDDPRINT("duk__patch_jump(): jump_pc=%ld, target_pc=%ld, offset=%ld", - (long) jump_pc, - (long) target_pc, - (long) offset)); -} - -DUK_LOCAL void duk__patch_jump_here(duk_compiler_ctx *comp_ctx, duk_int_t jump_pc) { - duk__patch_jump(comp_ctx, jump_pc, duk__get_current_pc(comp_ctx)); -} - -DUK_LOCAL void duk__patch_trycatch(duk_compiler_ctx *comp_ctx, - duk_int_t ldconst_pc, - duk_int_t trycatch_pc, - duk_regconst_t reg_catch, - duk_regconst_t const_varname, - duk_small_uint_t flags) { - duk_compiler_instr *instr; - - DUK_ASSERT(DUK__ISREG(reg_catch)); - - instr = duk__get_instr_ptr(comp_ctx, ldconst_pc); - DUK_ASSERT(DUK_DEC_OP(instr->ins) == DUK_OP_LDCONST); - DUK_ASSERT(instr != NULL); - if (const_varname & DUK__CONST_MARKER) { - /* Have a catch variable. */ - const_varname = const_varname & (~DUK__CONST_MARKER); - if (reg_catch > DUK_BC_BC_MAX || const_varname > DUK_BC_BC_MAX) { - /* Catch attempts to use out-of-range reg/const. Without this - * check Duktape 0.12.0 could generate invalid code which caused - * an assert failure on execution. This error is triggered e.g. - * for functions with a lot of constants and a try-catch statement. - * Shuffling or opcode semantics change is needed to fix the issue. - * See: test-bug-trycatch-many-constants.js. - */ - DUK_D(DUK_DPRINT("failed to patch trycatch: flags=%ld, reg_catch=%ld, const_varname=%ld (0x%08lx)", - (long) flags, - (long) reg_catch, - (long) const_varname, - (long) const_varname)); - DUK_ERROR_RANGE(comp_ctx->thr, DUK_STR_REG_LIMIT); - DUK_WO_NORETURN(return;); - } - instr->ins |= DUK_ENC_OP_A_BC(0, 0, const_varname); - } else { - /* No catch variable, e.g. a try-finally; replace LDCONST with - * NOP to avoid a bogus LDCONST. - */ - instr->ins = DUK_ENC_OP(DUK_OP_NOP); - } - - instr = duk__get_instr_ptr(comp_ctx, trycatch_pc); - DUK_ASSERT(instr != NULL); - DUK_ASSERT_DISABLE(flags >= DUK_BC_A_MIN); - DUK_ASSERT(flags <= DUK_BC_A_MAX); - instr->ins = DUK_ENC_OP_A_BC(DUK_OP_TRYCATCH, flags, reg_catch); -} - -DUK_LOCAL void duk__emit_if_false_skip(duk_compiler_ctx *comp_ctx, duk_regconst_t regconst) { - duk_small_uint_t op; - - op = DUK__ISREG(regconst) ? DUK_OP_IFFALSE_R : DUK_OP_IFFALSE_C; - duk__emit_bc(comp_ctx, op, regconst); /* helper will remove const flag */ -} - -DUK_LOCAL void duk__emit_if_true_skip(duk_compiler_ctx *comp_ctx, duk_regconst_t regconst) { - duk_small_uint_t op; - - op = DUK__ISREG(regconst) ? DUK_OP_IFTRUE_R : DUK_OP_IFTRUE_C; - duk__emit_bc(comp_ctx, op, regconst); /* helper will remove const flag */ -} - -DUK_LOCAL void duk__emit_invalid(duk_compiler_ctx *comp_ctx) { - duk__emit_op_only(comp_ctx, DUK_OP_INVALID); -} - -/* - * Peephole optimizer for finished bytecode. - * - * Does not remove opcodes; currently only straightens out unconditional - * jump chains which are generated by several control structures. - */ - -DUK_LOCAL void duk__peephole_optimize_bytecode(duk_compiler_ctx *comp_ctx) { - duk_compiler_instr *bc; - duk_small_uint_t iter; - duk_int_t i, n; - duk_int_t count_opt; - - bc = (duk_compiler_instr *) (void *) DUK_BW_GET_BASEPTR(comp_ctx->thr, &comp_ctx->curr_func.bw_code); -#if defined(DUK_USE_BUFLEN16) - /* No need to assert, buffer size maximum is 0xffff. */ -#else - DUK_ASSERT((duk_size_t) DUK_BW_GET_SIZE(comp_ctx->thr, &comp_ctx->curr_func.bw_code) / sizeof(duk_compiler_instr) <= - (duk_size_t) DUK_INT_MAX); /* bytecode limits */ -#endif - n = (duk_int_t) (DUK_BW_GET_SIZE(comp_ctx->thr, &comp_ctx->curr_func.bw_code) / sizeof(duk_compiler_instr)); - - for (iter = 0; iter < DUK_COMPILER_PEEPHOLE_MAXITER; iter++) { - count_opt = 0; - - for (i = 0; i < n; i++) { - duk_instr_t ins; - duk_int_t target_pc1; - duk_int_t target_pc2; - - ins = bc[i].ins; - if (DUK_DEC_OP(ins) != DUK_OP_JUMP) { - continue; - } - - target_pc1 = i + 1 + (duk_int_t) DUK_DEC_ABC(ins) - (duk_int_t) DUK_BC_JUMP_BIAS; - DUK_DDD(DUK_DDDPRINT("consider jump at pc %ld; target_pc=%ld", (long) i, (long) target_pc1)); - DUK_ASSERT(target_pc1 >= 0); - DUK_ASSERT(target_pc1 < n); - - /* Note: if target_pc1 == i, we'll optimize a jump to itself. - * This does not need to be checked for explicitly; the case - * is rare and max iter breaks us out. - */ - - ins = bc[target_pc1].ins; - if (DUK_DEC_OP(ins) != DUK_OP_JUMP) { - continue; - } - - target_pc2 = target_pc1 + 1 + (duk_int_t) DUK_DEC_ABC(ins) - (duk_int_t) DUK_BC_JUMP_BIAS; - - DUK_DDD(DUK_DDDPRINT("optimizing jump at pc %ld; old target is %ld -> new target is %ld", - (long) i, - (long) target_pc1, - (long) target_pc2)); - - bc[i].ins = DUK_ENC_OP_ABC(DUK_OP_JUMP, target_pc2 - (i + 1) + DUK_BC_JUMP_BIAS); - - count_opt++; - } - - DUK_DD(DUK_DDPRINT("optimized %ld jumps on peephole round %ld", (long) count_opt, (long) (iter + 1))); - - if (count_opt == 0) { - break; - } - } -} - -/* - * Intermediate value helpers - */ - -/* Flags for intermediate value coercions. A flag for using a forced reg - * is not needed, the forced_reg argument suffices and generates better - * code (it is checked as it is used). - */ -/* XXX: DUK__IVAL_FLAG_REQUIRE_SHORT is passed but not currently implemented - * by ispec/ivalue operations. - */ -#define DUK__IVAL_FLAG_ALLOW_CONST (1 << 0) /* allow a constant to be returned */ -#define DUK__IVAL_FLAG_REQUIRE_TEMP (1 << 1) /* require a (mutable) temporary as a result (or a const if allowed) */ -#define DUK__IVAL_FLAG_REQUIRE_SHORT (1 << 2) /* require a short (8-bit) reg/const which fits into bytecode B/C slot */ - -/* XXX: some code might benefit from DUK__SETTEMP_IFTEMP(thr,x) */ - -#if 0 /* enable manually for dumping */ -#define DUK__DUMP_ISPEC(compctx, ispec) \ - do { \ - duk__dump_ispec((compctx), (ispec)); \ - } while (0) -#define DUK__DUMP_IVALUE(compctx, ivalue) \ - do { \ - duk__dump_ivalue((compctx), (ivalue)); \ - } while (0) - -DUK_LOCAL void duk__dump_ispec(duk_compiler_ctx *comp_ctx, duk_ispec *x) { - DUK_D(DUK_DPRINT("ispec dump: t=%ld regconst=0x%08lx, valstack_idx=%ld, value=%!T", - (long) x->t, (unsigned long) x->regconst, (long) x->valstack_idx, - duk_get_tval(comp_ctx->thr, x->valstack_idx))); -} -DUK_LOCAL void duk__dump_ivalue(duk_compiler_ctx *comp_ctx, duk_ivalue *x) { - DUK_D(DUK_DPRINT("ivalue dump: t=%ld op=%ld " - "x1={t=%ld regconst=0x%08lx valstack_idx=%ld value=%!T} " - "x2={t=%ld regconst=0x%08lx valstack_idx=%ld value=%!T}", - (long) x->t, (long) x->op, - (long) x->x1.t, (unsigned long) x->x1.regconst, (long) x->x1.valstack_idx, - duk_get_tval(comp_ctx->thr, x->x1.valstack_idx), - (long) x->x2.t, (unsigned long) x->x2.regconst, (long) x->x2.valstack_idx, - duk_get_tval(comp_ctx->thr, x->x2.valstack_idx))); -} -#else -#define DUK__DUMP_ISPEC(comp_ctx, x) \ - do { \ - } while (0) -#define DUK__DUMP_IVALUE(comp_ctx, x) \ - do { \ - } while (0) -#endif - -DUK_LOCAL void duk__ivalue_regconst(duk_ivalue *x, duk_regconst_t regconst) { - x->t = DUK_IVAL_PLAIN; - x->x1.t = DUK_ISPEC_REGCONST; - x->x1.regconst = regconst; -} - -DUK_LOCAL void duk__ivalue_plain_fromstack(duk_compiler_ctx *comp_ctx, duk_ivalue *x) { - x->t = DUK_IVAL_PLAIN; - x->x1.t = DUK_ISPEC_VALUE; - duk_replace(comp_ctx->thr, x->x1.valstack_idx); -} - -DUK_LOCAL void duk__ivalue_var_fromstack(duk_compiler_ctx *comp_ctx, duk_ivalue *x) { - x->t = DUK_IVAL_VAR; - x->x1.t = DUK_ISPEC_VALUE; - duk_replace(comp_ctx->thr, x->x1.valstack_idx); -} - -DUK_LOCAL_DECL void duk__ivalue_var_hstring(duk_compiler_ctx *comp_ctx, duk_ivalue *x, duk_hstring *h) { - DUK_ASSERT(h != NULL); - duk_push_hstring(comp_ctx->thr, h); - duk__ivalue_var_fromstack(comp_ctx, x); -} - -DUK_LOCAL void duk__copy_ispec(duk_compiler_ctx *comp_ctx, duk_ispec *src, duk_ispec *dst) { - dst->t = src->t; - dst->regconst = src->regconst; - duk_copy(comp_ctx->thr, src->valstack_idx, dst->valstack_idx); -} - -DUK_LOCAL void duk__copy_ivalue(duk_compiler_ctx *comp_ctx, duk_ivalue *src, duk_ivalue *dst) { - dst->t = src->t; - dst->op = src->op; - dst->x1.t = src->x1.t; - dst->x1.regconst = src->x1.regconst; - dst->x2.t = src->x2.t; - dst->x2.regconst = src->x2.regconst; - duk_copy(comp_ctx->thr, src->x1.valstack_idx, dst->x1.valstack_idx); - duk_copy(comp_ctx->thr, src->x2.valstack_idx, dst->x2.valstack_idx); -} - -DUK_LOCAL duk_regconst_t duk__alloctemps(duk_compiler_ctx *comp_ctx, duk_small_int_t num) { - duk_regconst_t res; - - res = comp_ctx->curr_func.temp_next; - comp_ctx->curr_func.temp_next += num; - - if (comp_ctx->curr_func.temp_next > DUK__MAX_TEMPS) { /* == DUK__MAX_TEMPS is OK */ - DUK_ERROR_RANGE(comp_ctx->thr, DUK_STR_TEMP_LIMIT); - DUK_WO_NORETURN(return 0;); - } - - /* maintain highest 'used' temporary, needed to figure out nregs of function */ - if (comp_ctx->curr_func.temp_next > comp_ctx->curr_func.temp_max) { - comp_ctx->curr_func.temp_max = comp_ctx->curr_func.temp_next; - } - - return res; -} - -DUK_LOCAL duk_regconst_t duk__alloctemp(duk_compiler_ctx *comp_ctx) { - return duk__alloctemps(comp_ctx, 1); -} - -DUK_LOCAL void duk__settemp_checkmax(duk_compiler_ctx *comp_ctx, duk_regconst_t temp_next) { - comp_ctx->curr_func.temp_next = temp_next; - if (temp_next > comp_ctx->curr_func.temp_max) { - comp_ctx->curr_func.temp_max = temp_next; - } -} - -/* get const for value at valstack top */ -DUK_LOCAL duk_regconst_t duk__getconst(duk_compiler_ctx *comp_ctx) { - duk_hthread *thr = comp_ctx->thr; - duk_compiler_func *f = &comp_ctx->curr_func; - duk_tval *tv1; - duk_int_t i, n, n_check; - - n = (duk_int_t) duk_get_length(thr, f->consts_idx); - - tv1 = DUK_GET_TVAL_NEGIDX(thr, -1); - DUK_ASSERT(tv1 != NULL); - -#if defined(DUK_USE_FASTINT) - /* Explicit check for fastint downgrade. */ - DUK_TVAL_CHKFAST_INPLACE_SLOW(tv1); -#endif - - /* Sanity workaround for handling functions with a large number of - * constants at least somewhat reasonably. Otherwise checking whether - * we already have the constant would grow very slow (as it is O(N^2)). - */ - n_check = (n > DUK__GETCONST_MAX_CONSTS_CHECK ? DUK__GETCONST_MAX_CONSTS_CHECK : n); - for (i = 0; i < n_check; i++) { - duk_tval *tv2 = DUK_HOBJECT_A_GET_VALUE_PTR(thr->heap, f->h_consts, i); - - /* Strict equality is NOT enough, because we cannot use the same - * constant for e.g. +0 and -0. - */ - if (duk_js_samevalue(tv1, tv2)) { - DUK_DDD(DUK_DDDPRINT("reused existing constant for %!T -> const index %ld", (duk_tval *) tv1, (long) i)); - duk_pop(thr); - return (duk_regconst_t) i | (duk_regconst_t) DUK__CONST_MARKER; - } - } - - if (n > DUK__MAX_CONSTS) { - DUK_ERROR_RANGE(comp_ctx->thr, DUK_STR_CONST_LIMIT); - DUK_WO_NORETURN(return 0;); - } - - DUK_DDD(DUK_DDDPRINT("allocating new constant for %!T -> const index %ld", (duk_tval *) tv1, (long) n)); - (void) duk_put_prop_index(thr, f->consts_idx, (duk_uarridx_t) n); /* invalidates tv1, tv2 */ - return (duk_regconst_t) n | (duk_regconst_t) DUK__CONST_MARKER; -} - -DUK_LOCAL duk_bool_t duk__const_needs_refcount(duk_compiler_ctx *comp_ctx, duk_regconst_t rc) { -#if defined(DUK_USE_REFERENCE_COUNTING) - duk_compiler_func *f = &comp_ctx->curr_func; - duk_bool_t ret; - - DUK_ASSERT((rc & DUK__CONST_MARKER) == 0); /* caller removes const marker */ - (void) duk_get_prop_index(comp_ctx->thr, f->consts_idx, (duk_uarridx_t) rc); - ret = !duk_is_number(comp_ctx->thr, -1); /* now only number/string, so conservative check */ - duk_pop(comp_ctx->thr); - return ret; -#else - DUK_UNREF(comp_ctx); - DUK_UNREF(rc); - DUK_ASSERT((rc & DUK__CONST_MARKER) == 0); /* caller removes const marker */ - return 0; -#endif -} - -/* Get the value represented by an duk_ispec to a register or constant. - * The caller can control the result by indicating whether or not: - * - * (1) a constant is allowed (sometimes the caller needs the result to - * be in a register) - * - * (2) a temporary register is required (usually when caller requires - * the register to be safely mutable; normally either a bound - * register or a temporary register are both OK) - * - * (3) a forced register target needs to be used - * - * Bytecode may be emitted to generate the necessary value. The return - * value is either a register or a constant. - */ - -DUK_LOCAL -duk_regconst_t duk__ispec_toregconst_raw(duk_compiler_ctx *comp_ctx, - duk_ispec *x, - duk_regconst_t forced_reg, - duk_small_uint_t flags) { - duk_hthread *thr = comp_ctx->thr; - - DUK_DDD(DUK_DDDPRINT("duk__ispec_toregconst_raw(): x={%ld:%ld:%!T}, " - "forced_reg=%ld, flags 0x%08lx: allow_const=%ld require_temp=%ld require_short=%ld", - (long) x->t, - (long) x->regconst, - (duk_tval *) duk_get_tval(thr, x->valstack_idx), - (long) forced_reg, - (unsigned long) flags, - (long) ((flags & DUK__IVAL_FLAG_ALLOW_CONST) ? 1 : 0), - (long) ((flags & DUK__IVAL_FLAG_REQUIRE_TEMP) ? 1 : 0), - (long) ((flags & DUK__IVAL_FLAG_REQUIRE_SHORT) ? 1 : 0))); - - switch (x->t) { - case DUK_ISPEC_VALUE: { - duk_tval *tv; - - tv = DUK_GET_TVAL_POSIDX(thr, x->valstack_idx); - DUK_ASSERT(tv != NULL); - - switch (DUK_TVAL_GET_TAG(tv)) { - case DUK_TAG_UNDEFINED: { - /* Note: although there is no 'undefined' literal, undefined - * values can occur during compilation as a result of e.g. - * the 'void' operator. - */ - duk_regconst_t dest = (forced_reg >= 0 ? forced_reg : DUK__ALLOCTEMP(comp_ctx)); - duk__emit_bc(comp_ctx, DUK_OP_LDUNDEF, dest); - return dest; - } - case DUK_TAG_NULL: { - duk_regconst_t dest = (forced_reg >= 0 ? forced_reg : DUK__ALLOCTEMP(comp_ctx)); - duk__emit_bc(comp_ctx, DUK_OP_LDNULL, dest); - return dest; - } - case DUK_TAG_BOOLEAN: { - duk_regconst_t dest = (forced_reg >= 0 ? forced_reg : DUK__ALLOCTEMP(comp_ctx)); - duk__emit_bc(comp_ctx, (DUK_TVAL_GET_BOOLEAN(tv) ? DUK_OP_LDTRUE : DUK_OP_LDFALSE), dest); - return dest; - } - case DUK_TAG_POINTER: { - DUK_UNREACHABLE(); - break; - } - case DUK_TAG_STRING: { - duk_hstring *h; - duk_regconst_t dest; - duk_regconst_t constidx; - - h = DUK_TVAL_GET_STRING(tv); - DUK_UNREF(h); - DUK_ASSERT(h != NULL); - -#if 0 /* XXX: to be implemented? */ - /* Use special opcodes to load short strings */ - if (DUK_HSTRING_GET_BYTELEN(h) <= 2) { - /* Encode into a single opcode (18 bits can encode 1-2 bytes + length indicator) */ - } else if (DUK_HSTRING_GET_BYTELEN(h) <= 6) { - /* Encode into a double constant (53 bits can encode 6*8 = 48 bits + 3-bit length */ - } -#endif - duk_dup(thr, x->valstack_idx); - constidx = duk__getconst(comp_ctx); - - if (flags & DUK__IVAL_FLAG_ALLOW_CONST) { - return constidx; - } - - dest = (forced_reg >= 0 ? forced_reg : DUK__ALLOCTEMP(comp_ctx)); - duk__emit_a_bc(comp_ctx, DUK_OP_LDCONST, dest, constidx); - return dest; - } - case DUK_TAG_OBJECT: { - DUK_UNREACHABLE(); - break; - } - case DUK_TAG_BUFFER: { - DUK_UNREACHABLE(); - break; - } - case DUK_TAG_LIGHTFUNC: { - DUK_UNREACHABLE(); - break; - } -#if defined(DUK_USE_FASTINT) - case DUK_TAG_FASTINT: -#endif - default: { - /* number */ - duk_regconst_t dest; - duk_regconst_t constidx; - duk_double_t dval; - duk_int32_t ival; - - DUK_ASSERT(!DUK_TVAL_IS_UNUSED(tv)); - DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv)); - dval = DUK_TVAL_GET_NUMBER(tv); - - if (!(flags & DUK__IVAL_FLAG_ALLOW_CONST)) { - /* A number can be loaded either through a constant, using - * LDINT, or using LDINT+LDINTX. LDINT is always a size win, - * LDINT+LDINTX is not if the constant is used multiple times. - * Currently always prefer LDINT+LDINTX over a double constant. - */ - - if (duk_is_whole_get_int32_nonegzero(dval, &ival)) { - dest = (forced_reg >= 0 ? forced_reg : DUK__ALLOCTEMP(comp_ctx)); - duk__emit_load_int32(comp_ctx, dest, ival); - return dest; - } - } - - duk_dup(thr, x->valstack_idx); - constidx = duk__getconst(comp_ctx); - - if (flags & DUK__IVAL_FLAG_ALLOW_CONST) { - return constidx; - } else { - dest = (forced_reg >= 0 ? forced_reg : DUK__ALLOCTEMP(comp_ctx)); - duk__emit_a_bc(comp_ctx, DUK_OP_LDCONST, dest, constidx); - return dest; - } - } - } /* end switch */ - goto fail_internal; /* never here */ - } - case DUK_ISPEC_REGCONST: { - if (forced_reg >= 0) { - if (DUK__ISCONST(x->regconst)) { - duk__emit_a_bc(comp_ctx, DUK_OP_LDCONST, forced_reg, x->regconst); - } else if (x->regconst != forced_reg) { - duk__emit_a_bc(comp_ctx, DUK_OP_LDREG, forced_reg, x->regconst); - } else { - ; /* already in correct reg */ - } - return forced_reg; - } - - DUK_ASSERT(forced_reg < 0); - if (DUK__ISCONST(x->regconst)) { - if (!(flags & DUK__IVAL_FLAG_ALLOW_CONST)) { - duk_regconst_t dest = DUK__ALLOCTEMP(comp_ctx); - duk__emit_a_bc(comp_ctx, DUK_OP_LDCONST, dest, x->regconst); - return dest; - } - return x->regconst; - } - - DUK_ASSERT(forced_reg < 0 && !DUK__ISCONST(x->regconst)); - if ((flags & DUK__IVAL_FLAG_REQUIRE_TEMP) && !DUK__ISREG_TEMP(comp_ctx, x->regconst)) { - duk_regconst_t dest = DUK__ALLOCTEMP(comp_ctx); - duk__emit_a_bc(comp_ctx, DUK_OP_LDREG, dest, x->regconst); - return dest; - } - return x->regconst; - } - default: { - break; /* never here */ - } - } - -fail_internal: - DUK_ERROR_INTERNAL(thr); - DUK_WO_NORETURN(return 0;); -} - -DUK_LOCAL void duk__ispec_toforcedreg(duk_compiler_ctx *comp_ctx, duk_ispec *x, duk_regconst_t forced_reg) { - DUK_ASSERT(forced_reg >= 0); - (void) duk__ispec_toregconst_raw(comp_ctx, x, forced_reg, 0 /*flags*/); -} - -/* Coerce an duk_ivalue to a 'plain' value by generating the necessary - * arithmetic operations, property access, or variable access bytecode. - * The duk_ivalue argument ('x') is converted into a plain value as a - * side effect. - */ -DUK_LOCAL void duk__ivalue_toplain_raw(duk_compiler_ctx *comp_ctx, duk_ivalue *x, duk_regconst_t forced_reg) { - duk_hthread *thr = comp_ctx->thr; - - DUK_DDD(DUK_DDDPRINT("duk__ivalue_toplain_raw(): x={t=%ld,op=%ld,x1={%ld:%ld:%!T},x2={%ld:%ld:%!T}}, " - "forced_reg=%ld", - (long) x->t, - (long) x->op, - (long) x->x1.t, - (long) x->x1.regconst, - (duk_tval *) duk_get_tval(thr, x->x1.valstack_idx), - (long) x->x2.t, - (long) x->x2.regconst, - (duk_tval *) duk_get_tval(thr, x->x2.valstack_idx), - (long) forced_reg)); - - switch (x->t) { - case DUK_IVAL_PLAIN: { - return; - } - /* XXX: support unary arithmetic ivalues (useful?) */ - case DUK_IVAL_ARITH: { - duk_regconst_t arg1; - duk_regconst_t arg2; - duk_regconst_t dest; - duk_tval *tv1; - duk_tval *tv2; - - DUK_DDD(DUK_DDDPRINT("arith to plain conversion")); - - /* inline arithmetic check for constant values */ - /* XXX: use the exactly same arithmetic function here as in executor */ - if (x->x1.t == DUK_ISPEC_VALUE && x->x2.t == DUK_ISPEC_VALUE && x->t == DUK_IVAL_ARITH) { - tv1 = DUK_GET_TVAL_POSIDX(thr, x->x1.valstack_idx); - tv2 = DUK_GET_TVAL_POSIDX(thr, x->x2.valstack_idx); - DUK_ASSERT(tv1 != NULL); - DUK_ASSERT(tv2 != NULL); - - DUK_DDD(DUK_DDDPRINT("arith: tv1=%!T, tv2=%!T", (duk_tval *) tv1, (duk_tval *) tv2)); - - if (DUK_TVAL_IS_NUMBER(tv1) && DUK_TVAL_IS_NUMBER(tv2)) { - duk_double_t d1 = DUK_TVAL_GET_NUMBER(tv1); - duk_double_t d2 = DUK_TVAL_GET_NUMBER(tv2); - duk_double_t d3; - duk_bool_t accept_fold = 1; - - DUK_DDD(DUK_DDDPRINT("arith inline check: d1=%lf, d2=%lf, op=%ld", - (double) d1, - (double) d2, - (long) x->op)); - switch (x->op) { - case DUK_OP_ADD: { - d3 = d1 + d2; - break; - } - case DUK_OP_SUB: { - d3 = d1 - d2; - break; - } - case DUK_OP_MUL: { - d3 = d1 * d2; - break; - } - case DUK_OP_DIV: { - /* Division-by-zero is undefined - * behavior, so rely on a helper. - */ - d3 = duk_double_div(d1, d2); - break; - } - case DUK_OP_EXP: { - d3 = (duk_double_t) duk_js_arith_pow((double) d1, (double) d2); - break; - } - default: { - d3 = 0.0; /* Won't be used, but silence MSVC /W4 warning. */ - accept_fold = 0; - break; - } - } - - if (accept_fold) { - duk_double_union du; - du.d = d3; - DUK_DBLUNION_NORMALIZE_NAN_CHECK(&du); - d3 = du.d; - - x->t = DUK_IVAL_PLAIN; - DUK_ASSERT(x->x1.t == DUK_ISPEC_VALUE); - DUK_TVAL_SET_NUMBER(tv1, d3); /* old value is number: no refcount */ - return; - } - } else if (x->op == DUK_OP_ADD && DUK_TVAL_IS_STRING(tv1) && DUK_TVAL_IS_STRING(tv2)) { - /* Inline string concatenation. No need to check for - * symbols, as all inputs are valid ECMAScript strings. - */ - duk_dup(thr, x->x1.valstack_idx); - duk_dup(thr, x->x2.valstack_idx); - duk_concat(thr, 2); - duk_replace(thr, x->x1.valstack_idx); - x->t = DUK_IVAL_PLAIN; - DUK_ASSERT(x->x1.t == DUK_ISPEC_VALUE); - return; - } - } - - arg1 = duk__ispec_toregconst_raw(comp_ctx, - &x->x1, - -1, - DUK__IVAL_FLAG_ALLOW_CONST | DUK__IVAL_FLAG_REQUIRE_SHORT /*flags*/); - arg2 = duk__ispec_toregconst_raw(comp_ctx, - &x->x2, - -1, - DUK__IVAL_FLAG_ALLOW_CONST | DUK__IVAL_FLAG_REQUIRE_SHORT /*flags*/); - - /* If forced reg, use it as destination. Otherwise try to - * use either coerced ispec if it is a temporary. - */ - if (forced_reg >= 0) { - dest = forced_reg; - } else if (DUK__ISREG_TEMP(comp_ctx, arg1)) { - dest = arg1; - } else if (DUK__ISREG_TEMP(comp_ctx, arg2)) { - dest = arg2; - } else { - dest = DUK__ALLOCTEMP(comp_ctx); - } - - DUK_ASSERT(DUK__ISREG(dest)); - duk__emit_a_b_c(comp_ctx, x->op | DUK__EMIT_FLAG_BC_REGCONST, dest, arg1, arg2); - - duk__ivalue_regconst(x, dest); - return; - } - case DUK_IVAL_PROP: { - /* XXX: very similar to DUK_IVAL_ARITH - merge? */ - duk_regconst_t arg1; - duk_regconst_t arg2; - duk_regconst_t dest; - - /* Need a short reg/const, does not have to be a mutable temp. */ - arg1 = duk__ispec_toregconst_raw(comp_ctx, - &x->x1, - -1, - DUK__IVAL_FLAG_ALLOW_CONST | DUK__IVAL_FLAG_REQUIRE_SHORT /*flags*/); - arg2 = duk__ispec_toregconst_raw(comp_ctx, - &x->x2, - -1, - DUK__IVAL_FLAG_ALLOW_CONST | DUK__IVAL_FLAG_REQUIRE_SHORT /*flags*/); - - /* Pick a destination register. If either base value or key - * happens to be a temp value, reuse it as the destination. - * - * XXX: The temp must be a "mutable" one, i.e. such that no - * other expression is using it anymore. Here this should be - * the case because the value of a property access expression - * is neither the base nor the key, but the lookup result. - */ - - if (forced_reg >= 0) { - dest = forced_reg; - } else if (DUK__ISREG_TEMP(comp_ctx, arg1)) { - dest = arg1; - } else if (DUK__ISREG_TEMP(comp_ctx, arg2)) { - dest = arg2; - } else { - dest = DUK__ALLOCTEMP(comp_ctx); - } - - duk__emit_a_b_c(comp_ctx, DUK_OP_GETPROP | DUK__EMIT_FLAG_BC_REGCONST, dest, arg1, arg2); - - duk__ivalue_regconst(x, dest); - return; - } - case DUK_IVAL_VAR: { - /* x1 must be a string */ - duk_regconst_t dest; - duk_regconst_t reg_varbind; - duk_regconst_t rc_varname; - - DUK_ASSERT(x->x1.t == DUK_ISPEC_VALUE); - - duk_dup(thr, x->x1.valstack_idx); - if (duk__lookup_lhs(comp_ctx, ®_varbind, &rc_varname)) { - duk__ivalue_regconst(x, reg_varbind); - } else { - dest = (forced_reg >= 0 ? forced_reg : DUK__ALLOCTEMP(comp_ctx)); - duk__emit_a_bc(comp_ctx, DUK_OP_GETVAR, dest, rc_varname); - duk__ivalue_regconst(x, dest); - } - return; - } - case DUK_IVAL_NONE: - default: { - DUK_D(DUK_DPRINT("invalid ivalue type: %ld", (long) x->t)); - break; - } - } - - DUK_ERROR_INTERNAL(thr); - DUK_WO_NORETURN(return;); -} - -/* evaluate to plain value, no forced register (temp/bound reg both ok) */ -DUK_LOCAL void duk__ivalue_toplain(duk_compiler_ctx *comp_ctx, duk_ivalue *x) { - duk__ivalue_toplain_raw(comp_ctx, x, -1 /*forced_reg*/); -} - -/* evaluate to final form (e.g. coerce GETPROP to code), throw away temp */ -DUK_LOCAL void duk__ivalue_toplain_ignore(duk_compiler_ctx *comp_ctx, duk_ivalue *x) { - duk_regconst_t temp; - - /* If duk__ivalue_toplain_raw() allocates a temp, forget it and - * restore next temp state. - */ - temp = DUK__GETTEMP(comp_ctx); - duk__ivalue_toplain_raw(comp_ctx, x, -1 /*forced_reg*/); - DUK__SETTEMP(comp_ctx, temp); -} - -/* Coerce an duk_ivalue to a register or constant; result register may - * be a temp or a bound register. - * - * The duk_ivalue argument ('x') is converted into a regconst as a - * side effect. - */ -DUK_LOCAL -duk_regconst_t duk__ivalue_toregconst_raw(duk_compiler_ctx *comp_ctx, - duk_ivalue *x, - duk_regconst_t forced_reg, - duk_small_uint_t flags) { - duk_hthread *thr = comp_ctx->thr; - duk_regconst_t reg; - DUK_UNREF(thr); - - DUK_DDD(DUK_DDDPRINT("duk__ivalue_toregconst_raw(): x={t=%ld,op=%ld,x1={%ld:%ld:%!T},x2={%ld:%ld:%!T}}, " - "forced_reg=%ld, flags 0x%08lx: allow_const=%ld require_temp=%ld require_short=%ld", - (long) x->t, - (long) x->op, - (long) x->x1.t, - (long) x->x1.regconst, - (duk_tval *) duk_get_tval(thr, x->x1.valstack_idx), - (long) x->x2.t, - (long) x->x2.regconst, - (duk_tval *) duk_get_tval(thr, x->x2.valstack_idx), - (long) forced_reg, - (unsigned long) flags, - (long) ((flags & DUK__IVAL_FLAG_ALLOW_CONST) ? 1 : 0), - (long) ((flags & DUK__IVAL_FLAG_REQUIRE_TEMP) ? 1 : 0), - (long) ((flags & DUK__IVAL_FLAG_REQUIRE_SHORT) ? 1 : 0))); - - /* first coerce to a plain value */ - duk__ivalue_toplain_raw(comp_ctx, x, forced_reg); - DUK_ASSERT(x->t == DUK_IVAL_PLAIN); - - /* then to a register */ - reg = duk__ispec_toregconst_raw(comp_ctx, &x->x1, forced_reg, flags); - duk__ivalue_regconst(x, reg); - - return reg; -} - -DUK_LOCAL duk_regconst_t duk__ivalue_toreg(duk_compiler_ctx *comp_ctx, duk_ivalue *x) { - return duk__ivalue_toregconst_raw(comp_ctx, x, -1, 0 /*flags*/); -} - -#if 0 /* unused */ -DUK_LOCAL duk_regconst_t duk__ivalue_totemp(duk_compiler_ctx *comp_ctx, duk_ivalue *x) { - return duk__ivalue_toregconst_raw(comp_ctx, x, -1, DUK__IVAL_FLAG_REQUIRE_TEMP /*flags*/); -} -#endif - -DUK_LOCAL void duk__ivalue_toforcedreg(duk_compiler_ctx *comp_ctx, duk_ivalue *x, duk_int_t forced_reg) { - DUK_ASSERT(forced_reg >= 0); - (void) duk__ivalue_toregconst_raw(comp_ctx, x, forced_reg, 0 /*flags*/); -} - -DUK_LOCAL duk_regconst_t duk__ivalue_toregconst(duk_compiler_ctx *comp_ctx, duk_ivalue *x) { - return duk__ivalue_toregconst_raw(comp_ctx, x, -1, DUK__IVAL_FLAG_ALLOW_CONST /*flags*/); -} - -DUK_LOCAL duk_regconst_t duk__ivalue_totempconst(duk_compiler_ctx *comp_ctx, duk_ivalue *x) { - return duk__ivalue_toregconst_raw(comp_ctx, x, -1, DUK__IVAL_FLAG_ALLOW_CONST | DUK__IVAL_FLAG_REQUIRE_TEMP /*flags*/); -} - -/* The issues below can be solved with better flags */ - -/* XXX: many operations actually want toforcedtemp() -- brand new temp? */ -/* XXX: need a toplain_ignore() which will only coerce a value to a temp - * register if it might have a side effect. Side-effect free values do not - * need to be coerced. - */ - -/* - * Identifier handling - */ - -DUK_LOCAL duk_regconst_t duk__lookup_active_register_binding(duk_compiler_ctx *comp_ctx) { - duk_hthread *thr = comp_ctx->thr; - duk_hstring *h_varname; - duk_regconst_t ret; - - DUK_DDD(DUK_DDDPRINT("resolving identifier reference to '%!T'", (duk_tval *) duk_get_tval(thr, -1))); - - /* - * Special name handling - */ - - h_varname = duk_known_hstring(thr, -1); - - if (h_varname == DUK_HTHREAD_STRING_LC_ARGUMENTS(thr)) { - DUK_DDD(DUK_DDDPRINT("flagging function as accessing 'arguments'")); - comp_ctx->curr_func.id_access_arguments = 1; - } - - /* - * Inside one or more 'with' statements fall back to slow path always. - * (See e.g. test-stmt-with.js.) - */ - - if (comp_ctx->curr_func.with_depth > 0) { - DUK_DDD(DUK_DDDPRINT("identifier lookup inside a 'with' -> fall back to slow path")); - goto slow_path_own; - } - - /* - * Any catch bindings ("catch (e)") also affect identifier binding. - * - * Currently, the varmap is modified for the duration of the catch - * clause to ensure any identifier accesses with the catch variable - * name will use slow path. - */ - - duk_get_prop(thr, comp_ctx->curr_func.varmap_idx); - if (duk_is_number(thr, -1)) { - ret = duk_to_int(thr, -1); - duk_pop(thr); - } else { - duk_pop(thr); - if (comp_ctx->curr_func.catch_depth > 0 || comp_ctx->curr_func.with_depth > 0) { - DUK_DDD(DUK_DDDPRINT("slow path access from inside a try-catch or with needs _Varmap")); - goto slow_path_own; - } else { - /* In this case we're doing a variable lookup that doesn't - * match our own variables, so _Varmap won't be needed at - * run time. - */ - DUK_DDD(DUK_DDDPRINT("slow path access outside of try-catch and with, no need for _Varmap")); - goto slow_path_notown; - } - } - - DUK_DDD(DUK_DDDPRINT("identifier lookup -> reg %ld", (long) ret)); - return ret; - -slow_path_notown: - DUK_DDD(DUK_DDDPRINT("identifier lookup -> slow path, not own variable")); - - comp_ctx->curr_func.id_access_slow = 1; - return (duk_regconst_t) -1; - -slow_path_own: - DUK_DDD(DUK_DDDPRINT("identifier lookup -> slow path, may be own variable")); - - comp_ctx->curr_func.id_access_slow = 1; - comp_ctx->curr_func.id_access_slow_own = 1; - return (duk_regconst_t) -1; -} - -/* Lookup an identifier name in the current varmap, indicating whether the - * identifier is register-bound and if not, allocating a constant for the - * identifier name. Returns 1 if register-bound, 0 otherwise. Caller can - * also check (out_reg_varbind >= 0) to check whether or not identifier is - * register bound. The caller must NOT use out_rc_varname at all unless - * return code is 0 or out_reg_varbind is < 0; this is becuase out_rc_varname - * is unsigned and doesn't have a "unused" / none value. - */ -DUK_LOCAL duk_bool_t duk__lookup_lhs(duk_compiler_ctx *comp_ctx, duk_regconst_t *out_reg_varbind, duk_regconst_t *out_rc_varname) { - duk_hthread *thr = comp_ctx->thr; - duk_regconst_t reg_varbind; - duk_regconst_t rc_varname; - - /* [ ... varname ] */ - - duk_dup_top(thr); - reg_varbind = duk__lookup_active_register_binding(comp_ctx); - - if (reg_varbind >= 0) { - *out_reg_varbind = reg_varbind; - *out_rc_varname = 0; /* duk_regconst_t is unsigned, so use 0 as dummy value (ignored by caller) */ - duk_pop(thr); - return 1; - } else { - rc_varname = duk__getconst(comp_ctx); - *out_reg_varbind = -1; - *out_rc_varname = rc_varname; - return 0; - } -} - -/* - * Label handling - * - * Labels are initially added with flags prohibiting both break and continue. - * When the statement type is finally uncovered (after potentially multiple - * labels), all the labels are updated to allow/prohibit break and continue. - */ - -DUK_LOCAL void duk__add_label(duk_compiler_ctx *comp_ctx, duk_hstring *h_label, duk_int_t pc_label, duk_int_t label_id) { - duk_hthread *thr = comp_ctx->thr; - duk_size_t n; - duk_size_t new_size; - duk_uint8_t *p; - duk_labelinfo *li_start, *li; - - /* Duplicate (shadowing) labels are not allowed, except for the empty - * labels (which are used as default labels for switch and iteration - * statements). - * - * We could also allow shadowing of non-empty pending labels without any - * other issues than breaking the required label shadowing requirements - * of the E5 specification, see Section 12.12. - */ - - p = (duk_uint8_t *) DUK_HBUFFER_DYNAMIC_GET_DATA_PTR(thr->heap, comp_ctx->curr_func.h_labelinfos); - li_start = (duk_labelinfo *) (void *) p; - li = (duk_labelinfo *) (void *) (p + DUK_HBUFFER_GET_SIZE(comp_ctx->curr_func.h_labelinfos)); - n = (duk_size_t) (li - li_start); - - while (li > li_start) { - li--; - - if (li->h_label == h_label && h_label != DUK_HTHREAD_STRING_EMPTY_STRING(thr)) { - DUK_ERROR_SYNTAX(thr, DUK_STR_DUPLICATE_LABEL); - DUK_WO_NORETURN(return;); - } - } - - duk_push_hstring(thr, h_label); - DUK_ASSERT(n <= DUK_UARRIDX_MAX); /* label limits */ - (void) duk_put_prop_index(thr, comp_ctx->curr_func.labelnames_idx, (duk_uarridx_t) n); - - new_size = (n + 1) * sizeof(duk_labelinfo); - duk_hbuffer_resize(thr, comp_ctx->curr_func.h_labelinfos, new_size); - /* XXX: slack handling, slow now */ - - /* relookup after possible realloc */ - p = (duk_uint8_t *) DUK_HBUFFER_DYNAMIC_GET_DATA_PTR(thr->heap, comp_ctx->curr_func.h_labelinfos); - li_start = (duk_labelinfo *) (void *) p; - DUK_UNREF(li_start); /* silence scan-build warning */ - li = (duk_labelinfo *) (void *) (p + DUK_HBUFFER_GET_SIZE(comp_ctx->curr_func.h_labelinfos)); - li--; - - /* Labels can be used for iteration statements but also for other statements, - * in particular a label can be used for a block statement. All cases of a - * named label accept a 'break' so that flag is set here. Iteration statements - * also allow 'continue', so that flag is updated when we figure out the - * statement type. - */ - - li->flags = DUK_LABEL_FLAG_ALLOW_BREAK; - li->label_id = label_id; - li->h_label = h_label; - li->catch_depth = comp_ctx->curr_func.catch_depth; /* catch depth from current func */ - li->pc_label = pc_label; - - DUK_DDD(DUK_DDDPRINT("registered label: flags=0x%08lx, id=%ld, name=%!O, catch_depth=%ld, pc_label=%ld", - (unsigned long) li->flags, - (long) li->label_id, - (duk_heaphdr *) li->h_label, - (long) li->catch_depth, - (long) li->pc_label)); -} - -/* Update all labels with matching label_id. */ -DUK_LOCAL void duk__update_label_flags(duk_compiler_ctx *comp_ctx, duk_int_t label_id, duk_small_uint_t flags) { - duk_uint8_t *p; - duk_labelinfo *li_start, *li; - - p = (duk_uint8_t *) DUK_HBUFFER_DYNAMIC_GET_DATA_PTR(comp_ctx->thr->heap, comp_ctx->curr_func.h_labelinfos); - li_start = (duk_labelinfo *) (void *) p; - li = (duk_labelinfo *) (void *) (p + DUK_HBUFFER_GET_SIZE(comp_ctx->curr_func.h_labelinfos)); - - /* Match labels starting from latest; once label_id no longer matches, we can - * safely exit without checking the rest of the labels (only the topmost labels - * are ever updated). - */ - while (li > li_start) { - li--; - - if (li->label_id != label_id) { - break; - } - - DUK_DDD(DUK_DDDPRINT("updating (overwriting) label flags for li=%p, label_id=%ld, flags=%ld", - (void *) li, - (long) label_id, - (long) flags)); - - li->flags = flags; - } -} - -/* Lookup active label information. Break/continue distinction is necessary to handle switch - * statement related labels correctly: a switch will only catch a 'break', not a 'continue'. - * - * An explicit label cannot appear multiple times in the active set, but empty labels (unlabelled - * iteration and switch statements) can. A break will match the closest unlabelled or labelled - * statement. A continue will match the closest unlabelled or labelled iteration statement. It is - * a syntax error if a continue matches a labelled switch statement; because an explicit label cannot - * be duplicated, the continue cannot match any valid label outside the switch. - * - * A side effect of these rules is that a LABEL statement related to a switch should never actually - * catch a continue abrupt completion at run-time. Hence an INVALID opcode can be placed in the - * continue slot of the switch's LABEL statement. - */ - -/* XXX: awkward, especially the bunch of separate output values -> output struct? */ -DUK_LOCAL void duk__lookup_active_label(duk_compiler_ctx *comp_ctx, - duk_hstring *h_label, - duk_bool_t is_break, - duk_int_t *out_label_id, - duk_int_t *out_label_catch_depth, - duk_int_t *out_label_pc, - duk_bool_t *out_is_closest) { - duk_hthread *thr = comp_ctx->thr; - duk_uint8_t *p; - duk_labelinfo *li_start, *li_end, *li; - duk_bool_t match = 0; - - DUK_DDD(DUK_DDDPRINT("looking up active label: label='%!O', is_break=%ld", (duk_heaphdr *) h_label, (long) is_break)); - - DUK_UNREF(thr); - - p = (duk_uint8_t *) DUK_HBUFFER_DYNAMIC_GET_DATA_PTR(thr->heap, comp_ctx->curr_func.h_labelinfos); - li_start = (duk_labelinfo *) (void *) p; - li_end = (duk_labelinfo *) (void *) (p + DUK_HBUFFER_GET_SIZE(comp_ctx->curr_func.h_labelinfos)); - li = li_end; - - /* Match labels starting from latest label because there can be duplicate empty - * labels in the label set. - */ - while (li > li_start) { - li--; - - if (li->h_label != h_label) { - DUK_DDD(DUK_DDDPRINT("labelinfo[%ld] ->'%!O' != %!O", - (long) (li - li_start), - (duk_heaphdr *) li->h_label, - (duk_heaphdr *) h_label)); - continue; - } - - DUK_DDD(DUK_DDDPRINT("labelinfo[%ld] -> '%!O' label name matches (still need to check type)", - (long) (li - li_start), - (duk_heaphdr *) h_label)); - - /* currently all labels accept a break, so no explicit check for it now */ - DUK_ASSERT(li->flags & DUK_LABEL_FLAG_ALLOW_BREAK); - - if (is_break) { - /* break matches always */ - match = 1; - break; - } else if (li->flags & DUK_LABEL_FLAG_ALLOW_CONTINUE) { - /* iteration statements allow continue */ - match = 1; - break; - } else { - /* continue matched this label -- we can only continue if this is the empty - * label, for which duplication is allowed, and thus there is hope of - * finding a match deeper in the label stack. - */ - if (h_label != DUK_HTHREAD_STRING_EMPTY_STRING(thr)) { - DUK_ERROR_SYNTAX(thr, DUK_STR_INVALID_LABEL); - DUK_WO_NORETURN(return;); - } else { - DUK_DDD(DUK_DDDPRINT("continue matched an empty label which does not " - "allow a continue -> continue lookup deeper in label stack")); - } - } - } - /* XXX: match flag is awkward, rework */ - if (!match) { - DUK_ERROR_SYNTAX(thr, DUK_STR_INVALID_LABEL); - DUK_WO_NORETURN(return;); - } - - DUK_DDD(DUK_DDDPRINT("label match: %!O -> label_id %ld, catch_depth=%ld, pc_label=%ld", - (duk_heaphdr *) h_label, - (long) li->label_id, - (long) li->catch_depth, - (long) li->pc_label)); - - *out_label_id = li->label_id; - *out_label_catch_depth = li->catch_depth; - *out_label_pc = li->pc_label; - *out_is_closest = (li == li_end - 1); -} - -DUK_LOCAL void duk__reset_labels_to_length(duk_compiler_ctx *comp_ctx, duk_size_t len) { - duk_hthread *thr = comp_ctx->thr; - - duk_set_length(thr, comp_ctx->curr_func.labelnames_idx, len); - duk_hbuffer_resize(thr, comp_ctx->curr_func.h_labelinfos, sizeof(duk_labelinfo) * len); -} - -/* - * Expression parsing: duk__expr_nud(), duk__expr_led(), duk__expr_lbp(), and helpers. - * - * - duk__expr_nud(): ("null denotation"): process prev_token as a "start" of an expression (e.g. literal) - * - duk__expr_led(): ("left denotation"): process prev_token in the "middle" of an expression (e.g. operator) - * - duk__expr_lbp(): ("left-binding power"): return left-binding power of curr_token - */ - -/* object literal key tracking flags */ -#define DUK__OBJ_LIT_KEY_PLAIN (1 << 0) /* key encountered as a plain property */ -#define DUK__OBJ_LIT_KEY_GET (1 << 1) /* key encountered as a getter */ -#define DUK__OBJ_LIT_KEY_SET (1 << 2) /* key encountered as a setter */ - -DUK_LOCAL void duk__nud_array_literal(duk_compiler_ctx *comp_ctx, duk_ivalue *res) { - duk_hthread *thr = comp_ctx->thr; - duk_regconst_t reg_obj; /* result reg */ - duk_regconst_t reg_temp; /* temp reg */ - duk_regconst_t temp_start; /* temp reg value for start of loop */ - duk_small_uint_t max_init_values; /* max # of values initialized in one MPUTARR set */ - duk_small_uint_t num_values; /* number of values in current MPUTARR set */ - duk_uarridx_t curr_idx; /* current (next) array index */ - duk_uarridx_t start_idx; /* start array index of current MPUTARR set */ - duk_uarridx_t init_idx; /* last array index explicitly initialized, +1 */ - duk_bool_t require_comma; /* next loop requires a comma */ -#if !defined(DUK_USE_PREFER_SIZE) - duk_int_t pc_newarr; - duk_compiler_instr *instr; -#endif - - /* DUK_TOK_LBRACKET already eaten, current token is right after that */ - DUK_ASSERT(comp_ctx->prev_token.t == DUK_TOK_LBRACKET); - - max_init_values = DUK__MAX_ARRAY_INIT_VALUES; /* XXX: depend on available temps? */ - - reg_obj = DUK__ALLOCTEMP(comp_ctx); -#if !defined(DUK_USE_PREFER_SIZE) - pc_newarr = duk__get_current_pc(comp_ctx); -#endif - duk__emit_bc(comp_ctx, DUK_OP_NEWARR, reg_obj); /* XXX: patch initial size hint afterwards? */ - temp_start = DUK__GETTEMP(comp_ctx); - - /* - * Emit initializers in sets of maximum max_init_values. - * Corner cases such as single value initializers do not have - * special handling now. - * - * Elided elements must not be emitted as 'undefined' values, - * because such values would be enumerable (which is incorrect). - * Also note that trailing elisions must be reflected in the - * length of the final array but cause no elements to be actually - * inserted. - */ - - curr_idx = 0; - init_idx = 0; /* tracks maximum initialized index + 1 */ - start_idx = 0; - require_comma = 0; - - for (;;) { - num_values = 0; - DUK__SETTEMP(comp_ctx, temp_start); - - if (comp_ctx->curr_token.t == DUK_TOK_RBRACKET) { - break; - } - - for (;;) { - if (comp_ctx->curr_token.t == DUK_TOK_RBRACKET) { - /* the outer loop will recheck and exit */ - break; - } - - /* comma check */ - if (require_comma) { - if (comp_ctx->curr_token.t == DUK_TOK_COMMA) { - /* comma after a value, expected */ - duk__advance(comp_ctx); - require_comma = 0; - continue; - } else { - goto syntax_error; - } - } else { - if (comp_ctx->curr_token.t == DUK_TOK_COMMA) { - /* elision - flush */ - curr_idx++; - duk__advance(comp_ctx); - /* if num_values > 0, MPUTARR emitted by outer loop after break */ - break; - } - } - /* else an array initializer element */ - - /* initial index */ - if (num_values == 0) { - start_idx = curr_idx; - reg_temp = DUK__ALLOCTEMP(comp_ctx); - duk__emit_load_int32(comp_ctx, reg_temp, (duk_int32_t) start_idx); - } - - reg_temp = DUK__ALLOCTEMP(comp_ctx); /* alloc temp just in case, to update max temp */ - DUK__SETTEMP(comp_ctx, reg_temp); - duk__expr_toforcedreg(comp_ctx, res, DUK__BP_COMMA /*rbp_flags*/, reg_temp /*forced_reg*/); - DUK__SETTEMP(comp_ctx, reg_temp + 1); - - num_values++; - curr_idx++; - require_comma = 1; - - if (num_values >= max_init_values) { - /* MPUTARR emitted by outer loop */ - break; - } - } - - if (num_values > 0) { - /* - A is a source register (it's not a write target, but used - * to identify the target object) but can be shuffled. - * - B cannot be shuffled normally because it identifies a range - * of registers, the emitter has special handling for this - * (the "no shuffle" flag must not be set). - * - C is a non-register number and cannot be shuffled, but - * never needs to be. - */ - duk__emit_a_b_c(comp_ctx, - DUK_OP_MPUTARR | DUK__EMIT_FLAG_NO_SHUFFLE_C | DUK__EMIT_FLAG_A_IS_SOURCE, - reg_obj, - temp_start, - (duk_regconst_t) (num_values + 1)); - init_idx = start_idx + num_values; - - /* num_values and temp_start reset at top of outer loop */ - } - } - - /* Update initil size for NEWARR, doesn't need to be exact and is - * capped at A field limit. - */ -#if !defined(DUK_USE_PREFER_SIZE) - instr = duk__get_instr_ptr(comp_ctx, pc_newarr); - instr->ins |= DUK_ENC_OP_A(0, curr_idx > DUK_BC_A_MAX ? DUK_BC_A_MAX : curr_idx); -#endif - - DUK_ASSERT(comp_ctx->curr_token.t == DUK_TOK_RBRACKET); - duk__advance(comp_ctx); - - DUK_DDD(DUK_DDDPRINT("array literal done, curridx=%ld, initidx=%ld", (long) curr_idx, (long) init_idx)); - - /* trailing elisions? */ - if (curr_idx > init_idx) { - /* yes, must set array length explicitly */ - DUK_DDD(DUK_DDDPRINT("array literal has trailing elisions which affect its length")); - reg_temp = DUK__ALLOCTEMP(comp_ctx); - duk__emit_load_int32(comp_ctx, reg_temp, (duk_int_t) curr_idx); - duk__emit_a_bc(comp_ctx, DUK_OP_SETALEN | DUK__EMIT_FLAG_A_IS_SOURCE, reg_obj, reg_temp); - } - - DUK__SETTEMP(comp_ctx, temp_start); - - duk__ivalue_regconst(res, reg_obj); - return; - -syntax_error: - DUK_ERROR_SYNTAX(thr, DUK_STR_INVALID_ARRAY_LITERAL); - DUK_WO_NORETURN(return;); -} - -typedef struct { - duk_regconst_t reg_obj; - duk_regconst_t temp_start; - duk_small_uint_t num_pairs; - duk_small_uint_t num_total_pairs; -} duk__objlit_state; - -DUK_LOCAL void duk__objlit_flush_keys(duk_compiler_ctx *comp_ctx, duk__objlit_state *st) { - if (st->num_pairs > 0) { - /* - A is a source register (it's not a write target, but used - * to identify the target object) but can be shuffled. - * - B cannot be shuffled normally because it identifies a range - * of registers, the emitter has special handling for this - * (the "no shuffle" flag must not be set). - * - C is a non-register number and cannot be shuffled, but - * never needs to be. - */ - DUK_ASSERT(st->num_pairs > 0); - duk__emit_a_b_c(comp_ctx, - DUK_OP_MPUTOBJ | DUK__EMIT_FLAG_NO_SHUFFLE_C | DUK__EMIT_FLAG_A_IS_SOURCE, - st->reg_obj, - st->temp_start, - (duk_regconst_t) (st->num_pairs * 2)); - st->num_total_pairs += st->num_pairs; - st->num_pairs = 0; - } - DUK__SETTEMP(comp_ctx, st->temp_start); -} - -DUK_LOCAL duk_bool_t duk__objlit_load_key(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_token *tok, duk_regconst_t reg_temp) { - if (tok->t_nores == DUK_TOK_IDENTIFIER || tok->t_nores == DUK_TOK_STRING) { - /* same handling for identifiers and strings */ - DUK_ASSERT(tok->str1 != NULL); - duk_push_hstring(comp_ctx->thr, tok->str1); - } else if (tok->t == DUK_TOK_NUMBER) { - /* numbers can be loaded as numbers and coerced on the fly */ - duk_push_number(comp_ctx->thr, tok->num); - } else { - return 1; /* error */ - } - - duk__ivalue_plain_fromstack(comp_ctx, res); - DUK__SETTEMP(comp_ctx, reg_temp + 1); - duk__ivalue_toforcedreg(comp_ctx, res, reg_temp); - DUK__SETTEMP(comp_ctx, reg_temp + 1); - return 0; -} - -DUK_LOCAL void duk__nud_object_literal(duk_compiler_ctx *comp_ctx, duk_ivalue *res) { - duk_hthread *thr = comp_ctx->thr; - duk__objlit_state st; - duk_regconst_t reg_temp; /* temp reg */ - duk_small_uint_t max_init_pairs; /* max # of key-value pairs initialized in one MPUTOBJ set */ - duk_bool_t first; /* first value: comma must not precede the value */ - duk_bool_t is_set, is_get; /* temps */ -#if !defined(DUK_USE_PREFER_SIZE) - duk_int_t pc_newobj; - duk_compiler_instr *instr; -#endif - - DUK_ASSERT(comp_ctx->prev_token.t == DUK_TOK_LCURLY); - - max_init_pairs = DUK__MAX_OBJECT_INIT_PAIRS; /* XXX: depend on available temps? */ - - st.reg_obj = DUK__ALLOCTEMP(comp_ctx); /* target object */ - st.temp_start = DUK__GETTEMP(comp_ctx); /* start of MPUTOBJ argument list */ - st.num_pairs = 0; /* number of key/value pairs emitted for current MPUTOBJ set */ - st.num_total_pairs = 0; /* number of key/value pairs emitted overall */ - -#if !defined(DUK_USE_PREFER_SIZE) - pc_newobj = duk__get_current_pc(comp_ctx); -#endif - duk__emit_bc(comp_ctx, DUK_OP_NEWOBJ, st.reg_obj); - - /* - * Emit initializers in sets of maximum max_init_pairs keys. - * Setter/getter is handled separately and terminates the - * current set of initializer values. Corner cases such as - * single value initializers do not have special handling now. - */ - - first = 1; - for (;;) { - /* - * ES5 and ES2015+ provide a lot of different PropertyDefinition - * formats, see http://www.ecma-international.org/ecma-262/6.0/#sec-object-initializer. - * - * PropertyName can be IdentifierName (includes reserved words), a string - * literal, or a number literal. Note that IdentifierName allows 'get' and - * 'set' too, so we need to look ahead to the next token to distinguish: - * - * { get : 1 } - * - * and - * - * { get foo() { return 1 } } - * { get get() { return 1 } } // 'get' as getter propertyname - * - * Finally, a trailing comma is allowed. - * - * Key name is coerced to string at compile time (and ends up as a - * a string constant) even for numeric keys (e.g. "{1:'foo'}"). - * These could be emitted using e.g. LDINT, but that seems hardly - * worth the effort and would increase code size. - */ - - DUK_DDD(DUK_DDDPRINT("object literal loop, curr_token->t = %ld", (long) comp_ctx->curr_token.t)); - - if (comp_ctx->curr_token.t == DUK_TOK_RCURLY) { - break; - } - - if (first) { - first = 0; - } else { - if (comp_ctx->curr_token.t != DUK_TOK_COMMA) { - goto syntax_error; - } - duk__advance(comp_ctx); - if (comp_ctx->curr_token.t == DUK_TOK_RCURLY) { - /* trailing comma followed by rcurly */ - break; - } - } - - /* Advance to get one step of lookup. */ - duk__advance(comp_ctx); - - /* Flush current MPUTOBJ if enough many pairs gathered. */ - if (st.num_pairs >= max_init_pairs) { - duk__objlit_flush_keys(comp_ctx, &st); - DUK_ASSERT(st.num_pairs == 0); - } - - /* Reset temp register state and reserve reg_temp and - * reg_temp + 1 for handling the current property. - */ - DUK__SETTEMP(comp_ctx, st.temp_start + 2 * (duk_regconst_t) st.num_pairs); - reg_temp = DUK__ALLOCTEMPS(comp_ctx, 2); - - /* NOTE: "get" and "set" are not officially ReservedWords and the lexer - * currently treats them always like ordinary identifiers (DUK_TOK_GET - * and DUK_TOK_SET are unused). They need to be detected based on the - * identifier string content. - */ - - is_get = (comp_ctx->prev_token.t == DUK_TOK_IDENTIFIER && comp_ctx->prev_token.str1 == DUK_HTHREAD_STRING_GET(thr)); - is_set = (comp_ctx->prev_token.t == DUK_TOK_IDENTIFIER && comp_ctx->prev_token.str1 == DUK_HTHREAD_STRING_SET(thr)); - if ((is_get || is_set) && comp_ctx->curr_token.t != DUK_TOK_COLON) { - /* getter/setter */ - duk_int_t fnum; - - duk__objlit_flush_keys(comp_ctx, &st); - DUK_ASSERT(DUK__GETTEMP(comp_ctx) == - st.temp_start); /* 2 regs are guaranteed to be allocated w.r.t. temp_max */ - reg_temp = DUK__ALLOCTEMPS(comp_ctx, 2); - - if (duk__objlit_load_key(comp_ctx, res, &comp_ctx->curr_token, reg_temp) != 0) { - goto syntax_error; - } - - /* curr_token = get/set name */ - fnum = duk__parse_func_like_fnum(comp_ctx, DUK__FUNC_FLAG_GETSET); - - duk__emit_a_bc(comp_ctx, DUK_OP_CLOSURE, st.temp_start + 1, (duk_regconst_t) fnum); - - /* Slot C is used in a non-standard fashion (range of regs), - * emitter code has special handling for it (must not set the - * "no shuffle" flag). - */ - duk__emit_a_bc(comp_ctx, - (is_get ? DUK_OP_INITGET : DUK_OP_INITSET) | DUK__EMIT_FLAG_A_IS_SOURCE, - st.reg_obj, - st.temp_start); /* temp_start+0 = key, temp_start+1 = closure */ - - DUK_ASSERT(st.num_pairs == 0); /* temp state is reset on next loop */ -#if defined(DUK_USE_ES6) - } else if (comp_ctx->prev_token.t == DUK_TOK_IDENTIFIER && - (comp_ctx->curr_token.t == DUK_TOK_COMMA || comp_ctx->curr_token.t == DUK_TOK_RCURLY)) { - duk_bool_t load_rc; - - load_rc = duk__objlit_load_key(comp_ctx, res, &comp_ctx->prev_token, reg_temp); - DUK_UNREF(load_rc); - DUK_ASSERT(load_rc == 0); /* always succeeds because token is identifier */ - - duk__ivalue_var_hstring(comp_ctx, res, comp_ctx->prev_token.str1); - DUK_ASSERT(DUK__GETTEMP(comp_ctx) == reg_temp + 1); - duk__ivalue_toforcedreg(comp_ctx, res, reg_temp + 1); - - st.num_pairs++; - } else if ((comp_ctx->prev_token.t == DUK_TOK_IDENTIFIER || comp_ctx->prev_token.t == DUK_TOK_STRING || - comp_ctx->prev_token.t == DUK_TOK_NUMBER) && - comp_ctx->curr_token.t == DUK_TOK_LPAREN) { - duk_int_t fnum; - - /* Parsing-wise there's a small hickup here: the token parsing - * state is one step too advanced for the function parse helper - * compared to other cases. The current solution is an extra - * flag to indicate whether function parsing should use the - * current or the previous token to starting parsing from. - */ - - if (duk__objlit_load_key(comp_ctx, res, &comp_ctx->prev_token, reg_temp) != 0) { - goto syntax_error; - } - - fnum = duk__parse_func_like_fnum(comp_ctx, DUK__FUNC_FLAG_USE_PREVTOKEN | DUK__FUNC_FLAG_METDEF); - - duk__emit_a_bc(comp_ctx, DUK_OP_CLOSURE, reg_temp + 1, (duk_regconst_t) fnum); - - st.num_pairs++; -#endif /* DUK_USE_ES6 */ - } else { -#if defined(DUK_USE_ES6) - if (comp_ctx->prev_token.t == DUK_TOK_LBRACKET) { - /* ES2015 computed property name. Executor ToPropertyKey() - * coerces the key at runtime. - */ - DUK__SETTEMP(comp_ctx, reg_temp); - duk__expr_toforcedreg(comp_ctx, res, DUK__BP_FOR_EXPR, reg_temp); - duk__advance_expect(comp_ctx, DUK_TOK_RBRACKET); - - /* XXX: If next token is '(' we're dealing with - * the method shorthand with a computed name, - * e.g. { [Symbol.for('foo')](a,b) {} }. This - * form is not yet supported and causes a - * SyntaxError on the DUK_TOK_COLON check below. - */ - } else -#endif /* DUK_USE_ES6 */ - { - if (duk__objlit_load_key(comp_ctx, res, &comp_ctx->prev_token, reg_temp) != 0) { - goto syntax_error; - } - } - - duk__advance_expect(comp_ctx, DUK_TOK_COLON); - - DUK__SETTEMP(comp_ctx, reg_temp + 1); - duk__expr_toforcedreg(comp_ctx, res, DUK__BP_COMMA /*rbp_flags*/, reg_temp + 1 /*forced_reg*/); - - st.num_pairs++; - } - } /* property loop */ - - /* Flush remaining properties. */ - duk__objlit_flush_keys(comp_ctx, &st); - DUK_ASSERT(st.num_pairs == 0); - DUK_ASSERT(DUK__GETTEMP(comp_ctx) == st.temp_start); - - /* Update initial size for NEWOBJ. The init size doesn't need to be - * exact as the purpose is just to avoid object resizes in common - * cases. The size is capped to field A limit, and will be too high - * if the object literal contains duplicate keys (this is harmless but - * increases memory traffic if the object is compacted later on). - */ -#if !defined(DUK_USE_PREFER_SIZE) - instr = duk__get_instr_ptr(comp_ctx, pc_newobj); - instr->ins |= DUK_ENC_OP_A(0, st.num_total_pairs > DUK_BC_A_MAX ? DUK_BC_A_MAX : st.num_total_pairs); -#endif - - DUK_ASSERT(comp_ctx->curr_token.t == DUK_TOK_RCURLY); - duk__advance(comp_ctx); /* No RegExp after object literal. */ - - duk__ivalue_regconst(res, st.reg_obj); - return; - -syntax_error: - DUK_ERROR_SYNTAX(thr, DUK_STR_INVALID_OBJECT_LITERAL); - DUK_WO_NORETURN(return;); -} - -/* Parse argument list. Arguments are written to temps starting from - * "next temp". Returns number of arguments parsed. Expects left paren - * to be already eaten, and eats the right paren before returning. - */ -DUK_LOCAL duk_int_t duk__parse_arguments(duk_compiler_ctx *comp_ctx, duk_ivalue *res) { - duk_int_t nargs = 0; - duk_regconst_t reg_temp; - - /* Note: expect that caller has already eaten the left paren */ - - DUK_DDD(DUK_DDDPRINT("start parsing arguments, prev_token.t=%ld, curr_token.t=%ld", - (long) comp_ctx->prev_token.t, - (long) comp_ctx->curr_token.t)); - - for (;;) { - if (comp_ctx->curr_token.t == DUK_TOK_RPAREN) { - break; - } - if (nargs > 0) { - duk__advance_expect(comp_ctx, DUK_TOK_COMMA); - } - - /* We want the argument expression value to go to "next temp" - * without additional moves. That should almost always be the - * case, but we double check after expression parsing. - * - * This is not the cleanest possible approach. - */ - - reg_temp = DUK__ALLOCTEMP(comp_ctx); /* bump up "allocated" reg count, just in case */ - DUK__SETTEMP(comp_ctx, reg_temp); - - /* binding power must be high enough to NOT allow comma expressions directly */ - duk__expr_toforcedreg(comp_ctx, - res, - DUK__BP_COMMA /*rbp_flags*/, - reg_temp); /* always allow 'in', coerce to 'tr' just in case */ - - DUK__SETTEMP(comp_ctx, reg_temp + 1); - nargs++; - - DUK_DDD(DUK_DDDPRINT("argument #%ld written into reg %ld", (long) nargs, (long) reg_temp)); - } - - /* eat the right paren */ - duk__advance_expect(comp_ctx, DUK_TOK_RPAREN); /* RegExp mode does not matter. */ - - DUK_DDD(DUK_DDDPRINT("end parsing arguments")); - - return nargs; -} - -DUK_LOCAL duk_bool_t duk__expr_is_empty(duk_compiler_ctx *comp_ctx) { - /* empty expressions can be detected conveniently with nud/led counts */ - return (comp_ctx->curr_func.nud_count == 0) && (comp_ctx->curr_func.led_count == 0); -} - -DUK_LOCAL void duk__expr_nud(duk_compiler_ctx *comp_ctx, duk_ivalue *res) { - duk_hthread *thr = comp_ctx->thr; - duk_token *tk; - duk_regconst_t temp_at_entry; - duk_small_uint_t tok; - duk_uint32_t args; /* temp variable to pass constants and flags to shared code */ - - /* - * ctx->prev_token token to process with duk__expr_nud() - * ctx->curr_token updated by caller - * - * Note: the token in the switch below has already been eaten. - */ - - temp_at_entry = DUK__GETTEMP(comp_ctx); - - comp_ctx->curr_func.nud_count++; - - tk = &comp_ctx->prev_token; - tok = tk->t; - res->t = DUK_IVAL_NONE; - - DUK_DDD(DUK_DDDPRINT("duk__expr_nud(), prev_token.t=%ld, allow_in=%ld, paren_level=%ld", - (long) tk->t, - (long) comp_ctx->curr_func.allow_in, - (long) comp_ctx->curr_func.paren_level)); - - switch (tok) { - /* PRIMARY EXPRESSIONS */ - - case DUK_TOK_THIS: { - duk_regconst_t reg_temp; - reg_temp = DUK__ALLOCTEMP(comp_ctx); - duk__emit_bc(comp_ctx, DUK_OP_LDTHIS, reg_temp); - duk__ivalue_regconst(res, reg_temp); - return; - } - case DUK_TOK_IDENTIFIER: { - duk__ivalue_var_hstring(comp_ctx, res, tk->str1); - return; - } - case DUK_TOK_NULL: { - duk_push_null(thr); - goto plain_value; - } - case DUK_TOK_TRUE: { - duk_push_true(thr); - goto plain_value; - } - case DUK_TOK_FALSE: { - duk_push_false(thr); - goto plain_value; - } - case DUK_TOK_NUMBER: { - duk_push_number(thr, tk->num); - goto plain_value; - } - case DUK_TOK_STRING: { - DUK_ASSERT(tk->str1 != NULL); - duk_push_hstring(thr, tk->str1); - goto plain_value; - } - case DUK_TOK_REGEXP: { -#if defined(DUK_USE_REGEXP_SUPPORT) - duk_regconst_t reg_temp; - duk_regconst_t rc_re_bytecode; /* const */ - duk_regconst_t rc_re_source; /* const */ - - DUK_ASSERT(tk->str1 != NULL); - DUK_ASSERT(tk->str2 != NULL); - - DUK_DDD(DUK_DDDPRINT("emitting regexp op, str1=%!O, str2=%!O", (duk_heaphdr *) tk->str1, (duk_heaphdr *) tk->str2)); - - reg_temp = DUK__ALLOCTEMP(comp_ctx); - duk_push_hstring(thr, tk->str1); - duk_push_hstring(thr, tk->str2); - - /* [ ... pattern flags ] */ - - duk_regexp_compile(thr); - - /* [ ... escaped_source bytecode ] */ - - rc_re_bytecode = duk__getconst(comp_ctx); - rc_re_source = duk__getconst(comp_ctx); - - duk__emit_a_b_c(comp_ctx, - DUK_OP_REGEXP | DUK__EMIT_FLAG_BC_REGCONST, - reg_temp /*a*/, - rc_re_bytecode /*b*/, - rc_re_source /*c*/); - - duk__ivalue_regconst(res, reg_temp); - return; -#else /* DUK_USE_REGEXP_SUPPORT */ - goto syntax_error; -#endif /* DUK_USE_REGEXP_SUPPORT */ - } - case DUK_TOK_LBRACKET: { - DUK_DDD(DUK_DDDPRINT("parsing array literal")); - duk__nud_array_literal(comp_ctx, res); - return; - } - case DUK_TOK_LCURLY: { - DUK_DDD(DUK_DDDPRINT("parsing object literal")); - duk__nud_object_literal(comp_ctx, res); - return; - } - case DUK_TOK_LPAREN: { - duk_bool_t prev_allow_in; - - comp_ctx->curr_func.paren_level++; - prev_allow_in = comp_ctx->curr_func.allow_in; - comp_ctx->curr_func.allow_in = 1; /* reset 'allow_in' for parenthesized expression */ - - duk__expr(comp_ctx, res, DUK__BP_FOR_EXPR /*rbp_flags*/); /* Expression, terminates at a ')' */ - - duk__advance_expect(comp_ctx, DUK_TOK_RPAREN); /* No RegExp after parenthesized expression. */ - comp_ctx->curr_func.allow_in = prev_allow_in; - comp_ctx->curr_func.paren_level--; - return; - } - - /* MEMBER/NEW/CALL EXPRESSIONS */ - - case DUK_TOK_NEW: { - /* - * Parsing an expression starting with 'new' is tricky because - * there are multiple possible productions deriving from - * LeftHandSideExpression which begin with 'new'. - * - * We currently resort to one-token lookahead to distinguish the - * cases. Hopefully this is correct. The binding power must be - * such that parsing ends at an LPAREN (CallExpression) but not at - * a PERIOD or LBRACKET (MemberExpression). - * - * See doc/compiler.rst for discussion on the parsing approach, - * and testcases/test-dev-new.js for a bunch of documented tests. - */ - - duk_regconst_t reg_target; - duk_int_t nargs; - - DUK_DDD(DUK_DDDPRINT("begin parsing new expression")); - - reg_target = DUK__ALLOCTEMPS(comp_ctx, 2); - -#if defined(DUK_USE_ES6) - if (comp_ctx->curr_token.t == DUK_TOK_PERIOD) { - /* new.target */ - DUK_DDD(DUK_DDDPRINT("new.target")); - duk__advance(comp_ctx); - if (comp_ctx->curr_token.t_nores != DUK_TOK_IDENTIFIER || - !duk_hstring_equals_ascii_cstring(comp_ctx->curr_token.str1, "target")) { - goto syntax_error_newtarget; - } - if (comp_ctx->curr_func.is_global) { - goto syntax_error_newtarget; - } - duk__advance(comp_ctx); - duk__emit_bc(comp_ctx, DUK_OP_NEWTARGET, reg_target); - duk__ivalue_regconst(res, reg_target); - return; - } -#endif /* DUK_USE_ES6 */ - - duk__expr_toforcedreg(comp_ctx, res, DUK__BP_CALL /*rbp_flags*/, reg_target /*forced_reg*/); - duk__emit_bc(comp_ctx, DUK_OP_NEWOBJ, reg_target + 1); /* default instance */ - DUK__SETTEMP(comp_ctx, reg_target + 2); - - /* XXX: 'new obj.noSuch()' doesn't use GETPROPC now which - * makes the error message worse than for obj.noSuch(). - */ - - if (comp_ctx->curr_token.t == DUK_TOK_LPAREN) { - /* 'new' MemberExpression Arguments */ - DUK_DDD(DUK_DDDPRINT("new expression has argument list")); - duk__advance(comp_ctx); - nargs = duk__parse_arguments(comp_ctx, res); /* parse args starting from "next temp", reg_target + 1 */ - /* right paren eaten */ - } else { - /* 'new' MemberExpression */ - DUK_DDD(DUK_DDDPRINT("new expression has no argument list")); - nargs = 0; - } - - duk__emit_a_bc(comp_ctx, DUK_OP_CALL0 | DUK_BC_CALL_FLAG_CONSTRUCT, nargs /*num_args*/, reg_target /*target*/); - - DUK_DDD(DUK_DDDPRINT("end parsing new expression")); - - duk__ivalue_regconst(res, reg_target); - return; - } - - /* FUNCTION EXPRESSIONS */ - - case DUK_TOK_FUNCTION: { - /* Function expression. Note that any statement beginning with 'function' - * is handled by the statement parser as a function declaration, or a - * non-standard function expression/statement (or a SyntaxError). We only - * handle actual function expressions (occurring inside an expression) here. - * - * O(depth^2) parse count for inner functions is handled by recording a - * lexer offset on the first compilation pass, so that the function can - * be efficiently skipped on the second pass. This is encapsulated into - * duk__parse_func_like_fnum(). - */ - - duk_regconst_t reg_temp; - duk_int_t fnum; - - reg_temp = DUK__ALLOCTEMP(comp_ctx); - - /* curr_token follows 'function' */ - fnum = duk__parse_func_like_fnum(comp_ctx, 0 /*flags*/); - DUK_DDD(DUK_DDDPRINT("parsed inner function -> fnum %ld", (long) fnum)); - - duk__emit_a_bc(comp_ctx, DUK_OP_CLOSURE, reg_temp /*a*/, (duk_regconst_t) fnum /*bc*/); - - duk__ivalue_regconst(res, reg_temp); - return; - } - - /* UNARY EXPRESSIONS */ - - case DUK_TOK_DELETE: { - /* Delete semantics are a bit tricky. The description in E5 specification - * is kind of confusing, because it distinguishes between resolvability of - * a reference (which is only known at runtime) seemingly at compile time - * (= SyntaxError throwing). - */ - duk__expr(comp_ctx, res, DUK__BP_MULTIPLICATIVE /*rbp_flags*/); /* UnaryExpression */ - if (res->t == DUK_IVAL_VAR) { - /* not allowed in strict mode, regardless of whether resolves; - * in non-strict mode DELVAR handles both non-resolving and - * resolving cases (the specification description is a bit confusing). - */ - - duk_regconst_t reg_temp; - duk_regconst_t reg_varbind; - duk_regconst_t rc_varname; - - if (comp_ctx->curr_func.is_strict) { - DUK_ERROR_SYNTAX(thr, DUK_STR_CANNOT_DELETE_IDENTIFIER); - DUK_WO_NORETURN(return;); - } - - DUK__SETTEMP(comp_ctx, temp_at_entry); - reg_temp = DUK__ALLOCTEMP(comp_ctx); - - duk_dup(thr, res->x1.valstack_idx); - if (duk__lookup_lhs(comp_ctx, ®_varbind, &rc_varname)) { - /* register bound variables are non-configurable -> always false */ - duk__emit_bc(comp_ctx, DUK_OP_LDFALSE, reg_temp); - } else { - duk_dup(thr, res->x1.valstack_idx); - rc_varname = duk__getconst(comp_ctx); - duk__emit_a_bc(comp_ctx, DUK_OP_DELVAR, reg_temp, rc_varname); - } - duk__ivalue_regconst(res, reg_temp); - } else if (res->t == DUK_IVAL_PROP) { - duk_regconst_t reg_temp; - duk_regconst_t reg_obj; - duk_regconst_t rc_key; - - DUK__SETTEMP(comp_ctx, temp_at_entry); - reg_temp = DUK__ALLOCTEMP(comp_ctx); - reg_obj = - duk__ispec_toregconst_raw(comp_ctx, &res->x1, -1 /*forced_reg*/, 0 /*flags*/); /* don't allow const */ - rc_key = - duk__ispec_toregconst_raw(comp_ctx, &res->x2, -1 /*forced_reg*/, DUK__IVAL_FLAG_ALLOW_CONST /*flags*/); - duk__emit_a_b_c(comp_ctx, DUK_OP_DELPROP | DUK__EMIT_FLAG_BC_REGCONST, reg_temp, reg_obj, rc_key); - - duk__ivalue_regconst(res, reg_temp); - } else { - /* non-Reference deletion is always 'true', even in strict mode */ - duk_push_true(thr); - goto plain_value; - } - return; - } - case DUK_TOK_VOID: { - duk__expr_toplain_ignore(comp_ctx, res, DUK__BP_MULTIPLICATIVE /*rbp_flags*/); /* UnaryExpression */ - duk_push_undefined(thr); - goto plain_value; - } - case DUK_TOK_TYPEOF: { - /* 'typeof' must handle unresolvable references without throwing - * a ReferenceError (E5 Section 11.4.3). Register mapped values - * will never be unresolvable so special handling is only required - * when an identifier is a "slow path" one. - */ - duk__expr(comp_ctx, res, DUK__BP_MULTIPLICATIVE /*rbp_flags*/); /* UnaryExpression */ - - if (res->t == DUK_IVAL_VAR) { - duk_regconst_t reg_varbind; - duk_regconst_t rc_varname; - duk_regconst_t reg_temp; - - duk_dup(thr, res->x1.valstack_idx); - if (!duk__lookup_lhs(comp_ctx, ®_varbind, &rc_varname)) { - DUK_DDD(DUK_DDDPRINT("typeof for an identifier name which could not be resolved " - "at compile time, need to use special run-time handling")); - reg_temp = DUK__ALLOCTEMP(comp_ctx); - duk__emit_a_bc(comp_ctx, DUK_OP_TYPEOFID, reg_temp, rc_varname); - duk__ivalue_regconst(res, reg_temp); - return; - } - } - - args = DUK_OP_TYPEOF; - goto unary; - } - case DUK_TOK_INCREMENT: { - args = (DUK_OP_PREINCP << 8) + DUK_OP_PREINCR; - goto preincdec; - } - case DUK_TOK_DECREMENT: { - args = (DUK_OP_PREDECP << 8) + DUK_OP_PREDECR; - goto preincdec; - } - case DUK_TOK_ADD: { - /* unary plus */ - duk__expr(comp_ctx, res, DUK__BP_MULTIPLICATIVE /*rbp_flags*/); /* UnaryExpression */ - if (res->t == DUK_IVAL_PLAIN && res->x1.t == DUK_ISPEC_VALUE && duk_is_number(thr, res->x1.valstack_idx)) { - /* unary plus of a number is identity */ - return; - } - args = DUK_OP_UNP; - goto unary; - } - case DUK_TOK_SUB: { - /* unary minus */ - duk__expr(comp_ctx, res, DUK__BP_MULTIPLICATIVE /*rbp_flags*/); /* UnaryExpression */ - if (res->t == DUK_IVAL_PLAIN && res->x1.t == DUK_ISPEC_VALUE && duk_is_number(thr, res->x1.valstack_idx)) { - /* this optimization is important to handle negative literals - * (which are not directly provided by the lexical grammar) - */ - duk_tval *tv_num; - duk_double_union du; - - tv_num = DUK_GET_TVAL_POSIDX(thr, res->x1.valstack_idx); - DUK_ASSERT(tv_num != NULL); - DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv_num)); - du.d = DUK_TVAL_GET_NUMBER(tv_num); - du.d = -du.d; - DUK_DBLUNION_NORMALIZE_NAN_CHECK(&du); - DUK_TVAL_SET_NUMBER(tv_num, du.d); - return; - } - args = DUK_OP_UNM; - goto unary; - } - case DUK_TOK_BNOT: { - duk__expr(comp_ctx, res, DUK__BP_MULTIPLICATIVE /*rbp_flags*/); /* UnaryExpression */ - args = DUK_OP_BNOT; - goto unary; - } - case DUK_TOK_LNOT: { - duk__expr(comp_ctx, res, DUK__BP_MULTIPLICATIVE /*rbp_flags*/); /* UnaryExpression */ - if (res->t == DUK_IVAL_PLAIN && res->x1.t == DUK_ISPEC_VALUE) { - /* Very minimal inlining to handle common idioms '!0' and '!1', - * and also boolean arguments like '!false' and '!true'. - */ - duk_tval *tv_val; - - tv_val = DUK_GET_TVAL_POSIDX(thr, res->x1.valstack_idx); - DUK_ASSERT(tv_val != NULL); - if (DUK_TVAL_IS_NUMBER(tv_val)) { - duk_double_t d; - d = DUK_TVAL_GET_NUMBER(tv_val); - if (duk_double_equals(d, 0.0)) { - /* Matches both +0 and -0 on purpose. */ - DUK_DDD(DUK_DDDPRINT("inlined lnot: !0 -> true")); - DUK_TVAL_SET_BOOLEAN_TRUE(tv_val); - return; - } else if (duk_double_equals(d, 1.0)) { - DUK_DDD(DUK_DDDPRINT("inlined lnot: !1 -> false")); - DUK_TVAL_SET_BOOLEAN_FALSE(tv_val); - return; - } - } else if (DUK_TVAL_IS_BOOLEAN(tv_val)) { - duk_small_uint_t v; - v = DUK_TVAL_GET_BOOLEAN(tv_val); - DUK_DDD(DUK_DDDPRINT("inlined lnot boolean: %ld", (long) v)); - DUK_ASSERT(v == 0 || v == 1); - DUK_TVAL_SET_BOOLEAN(tv_val, v ^ 0x01); - return; - } - } - args = DUK_OP_LNOT; - goto unary; - } - - } /* end switch */ - - DUK_ERROR_SYNTAX(thr, DUK_STR_PARSE_ERROR); - DUK_WO_NORETURN(return;); - -unary : { - /* Unary opcodes use just the 'BC' register source because it - * matches current shuffle limits, and maps cleanly to 16 high - * bits of the opcode. - */ - - duk_regconst_t reg_src, reg_res; - - reg_src = duk__ivalue_toregconst_raw(comp_ctx, res, -1 /*forced_reg*/, 0 /*flags*/); - if (DUK__ISREG_TEMP(comp_ctx, reg_src)) { - reg_res = reg_src; - } else { - reg_res = DUK__ALLOCTEMP(comp_ctx); - } - duk__emit_a_bc(comp_ctx, args, reg_res, reg_src); - duk__ivalue_regconst(res, reg_res); - return; -} - -preincdec : { - /* preincrement and predecrement */ - duk_regconst_t reg_res; - duk_small_uint_t args_op1 = args & 0xff; /* DUK_OP_PREINCR/DUK_OP_PREDECR */ - duk_small_uint_t args_op2 = args >> 8; /* DUK_OP_PREINCP_RR/DUK_OP_PREDECP_RR */ - - /* Specific assumptions for opcode numbering. */ - DUK_ASSERT(DUK_OP_PREINCR + 4 == DUK_OP_PREINCV); - DUK_ASSERT(DUK_OP_PREDECR + 4 == DUK_OP_PREDECV); - - reg_res = DUK__ALLOCTEMP(comp_ctx); - - duk__expr(comp_ctx, res, DUK__BP_MULTIPLICATIVE /*rbp_flags*/); /* UnaryExpression */ - if (res->t == DUK_IVAL_VAR) { - duk_hstring *h_varname; - duk_regconst_t reg_varbind; - duk_regconst_t rc_varname; - - h_varname = duk_known_hstring(thr, res->x1.valstack_idx); - - if (duk__hstring_is_eval_or_arguments_in_strict_mode(comp_ctx, h_varname)) { - goto syntax_error; - } - - duk_dup(thr, res->x1.valstack_idx); - if (duk__lookup_lhs(comp_ctx, ®_varbind, &rc_varname)) { - duk__emit_a_bc(comp_ctx, - args_op1, /* e.g. DUK_OP_PREINCR */ - reg_res, - reg_varbind); - } else { - duk__emit_a_bc(comp_ctx, - args_op1 + 4, /* e.g. DUK_OP_PREINCV */ - reg_res, - rc_varname); - } - - DUK_DDD(DUK_DDDPRINT("preincdec to '%!O' -> reg_varbind=%ld, rc_varname=%ld", - (duk_heaphdr *) h_varname, - (long) reg_varbind, - (long) rc_varname)); - } else if (res->t == DUK_IVAL_PROP) { - duk_regconst_t reg_obj; /* allocate to reg only (not const) */ - duk_regconst_t rc_key; - reg_obj = duk__ispec_toregconst_raw(comp_ctx, &res->x1, -1 /*forced_reg*/, 0 /*flags*/); /* don't allow const */ - rc_key = duk__ispec_toregconst_raw(comp_ctx, &res->x2, -1 /*forced_reg*/, DUK__IVAL_FLAG_ALLOW_CONST /*flags*/); - duk__emit_a_b_c(comp_ctx, - args_op2 | DUK__EMIT_FLAG_BC_REGCONST, /* e.g. DUK_OP_PREINCP */ - reg_res, - reg_obj, - rc_key); - } else { - /* Technically return value is not needed because INVLHS will - * unconditially throw a ReferenceError. Coercion is necessary - * for proper semantics (consider ToNumber() called for an object). - * Use DUK_OP_UNP with a dummy register to get ToNumber(). - */ - - duk__ivalue_toforcedreg(comp_ctx, res, reg_res); - duk__emit_bc(comp_ctx, DUK_OP_UNP, reg_res); /* for side effects, result ignored */ - duk__emit_op_only(comp_ctx, DUK_OP_INVLHS); - } - DUK__SETTEMP(comp_ctx, reg_res + 1); - duk__ivalue_regconst(res, reg_res); - return; -} - -plain_value : { - /* Stack top contains plain value */ - duk__ivalue_plain_fromstack(comp_ctx, res); - return; -} - -#if defined(DUK_USE_ES6) -syntax_error_newtarget: - DUK_ERROR_SYNTAX(thr, DUK_STR_INVALID_NEWTARGET); - DUK_WO_NORETURN(return;); -#endif - -syntax_error: - DUK_ERROR_SYNTAX(thr, DUK_STR_INVALID_EXPRESSION); - DUK_WO_NORETURN(return;); -} - -/* XXX: add flag to indicate whether caller cares about return value; this - * affects e.g. handling of assignment expressions. This change needs API - * changes elsewhere too. - */ -DUK_LOCAL void duk__expr_led(duk_compiler_ctx *comp_ctx, duk_ivalue *left, duk_ivalue *res) { - duk_hthread *thr = comp_ctx->thr; - duk_token *tk; - duk_small_uint_t tok; - duk_uint32_t args; /* temp variable to pass constants and flags to shared code */ - - /* - * ctx->prev_token token to process with duk__expr_led() - * ctx->curr_token updated by caller - */ - - comp_ctx->curr_func.led_count++; - - /* The token in the switch has already been eaten here */ - tk = &comp_ctx->prev_token; - tok = tk->t; - - DUK_DDD(DUK_DDDPRINT("duk__expr_led(), prev_token.t=%ld, allow_in=%ld, paren_level=%ld", - (long) tk->t, - (long) comp_ctx->curr_func.allow_in, - (long) comp_ctx->curr_func.paren_level)); - - /* XXX: default priority for infix operators is duk__expr_lbp(tok) -> get it here? */ - - switch (tok) { - /* PRIMARY EXPRESSIONS */ - - case DUK_TOK_PERIOD: { - /* Property access expressions are critical for correct LHS ordering, - * see comments in duk__expr()! - * - * A conservative approach would be to use duk__ivalue_totempconst() - * for 'left'. However, allowing a reg-bound variable seems safe here - * and is nice because "foo.bar" is a common expression. If the ivalue - * is used in an expression a GETPROP will occur before any changes to - * the base value can occur. If the ivalue is used as an assignment - * LHS, the assignment code will ensure the base value is safe from - * RHS mutation. - */ - - /* XXX: This now coerces an identifier into a GETVAR to a temp, which - * causes an extra LDREG in call setup. It's sufficient to coerce to a - * unary ivalue? - */ - duk__ivalue_toplain(comp_ctx, left); - - /* NB: must accept reserved words as property name */ - if (comp_ctx->curr_token.t_nores != DUK_TOK_IDENTIFIER) { - DUK_ERROR_SYNTAX(thr, DUK_STR_EXPECTED_IDENTIFIER); - DUK_WO_NORETURN(return;); - } - - res->t = DUK_IVAL_PROP; - duk__copy_ispec(comp_ctx, &left->x1, &res->x1); /* left.x1 -> res.x1 */ - DUK_ASSERT(comp_ctx->curr_token.str1 != NULL); - duk_push_hstring(thr, comp_ctx->curr_token.str1); - duk_replace(thr, res->x2.valstack_idx); - res->x2.t = DUK_ISPEC_VALUE; - - /* special RegExp literal handling after IdentifierName */ - comp_ctx->curr_func.reject_regexp_in_adv = 1; - - duk__advance(comp_ctx); - return; - } - case DUK_TOK_LBRACKET: { - /* Property access expressions are critical for correct LHS ordering, - * see comments in duk__expr()! - */ - - /* XXX: optimize temp reg use */ - /* XXX: similar coercion issue as in DUK_TOK_PERIOD */ - /* XXX: coerce to regs? it might be better for enumeration use, where the - * same PROP ivalue is used multiple times. Or perhaps coerce PROP further - * there? - */ - /* XXX: for simple cases like x['y'] an unnecessary LDREG is - * emitted for the base value; could avoid it if we knew that - * the key expression is safe (e.g. just a single literal). - */ - - /* The 'left' value must not be a register bound variable - * because it may be mutated during the rest of the expression - * and E5.1 Section 11.2.1 specifies the order of evaluation - * so that the base value is evaluated first. - * See: test-bug-nested-prop-mutate.js. - */ - duk__ivalue_totempconst(comp_ctx, left); - duk__expr_toplain(comp_ctx, res, DUK__BP_FOR_EXPR /*rbp_flags*/); /* Expression, ']' terminates */ - duk__advance_expect(comp_ctx, DUK_TOK_RBRACKET); - - res->t = DUK_IVAL_PROP; - duk__copy_ispec(comp_ctx, &res->x1, &res->x2); /* res.x1 -> res.x2 */ - duk__copy_ispec(comp_ctx, &left->x1, &res->x1); /* left.x1 -> res.x1 */ - return; - } - case DUK_TOK_LPAREN: { - /* function call */ - duk_regconst_t reg_cs = DUK__ALLOCTEMPS(comp_ctx, 2); - duk_int_t nargs; - duk_small_uint_t call_op = DUK_OP_CALL0; - - /* XXX: attempt to get the call result to "next temp" whenever - * possible to avoid unnecessary register shuffles. - */ - - /* - * Setup call: target and 'this' binding. Three cases: - * - * 1. Identifier base (e.g. "foo()") - * 2. Property base (e.g. "foo.bar()") - * 3. Register base (e.g. "foo()()"; i.e. when a return value is a function) - */ - - if (left->t == DUK_IVAL_VAR) { - duk_hstring *h_varname; - duk_regconst_t reg_varbind; - duk_regconst_t rc_varname; - - DUK_DDD(DUK_DDDPRINT("function call with identifier base")); - - h_varname = duk_known_hstring(thr, left->x1.valstack_idx); - if (h_varname == DUK_HTHREAD_STRING_EVAL(thr)) { - /* Potential direct eval call detected, flag the CALL - * so that a run-time "direct eval" check is made and - * special behavior may be triggered. Note that this - * does not prevent 'eval' from being register bound. - */ - DUK_DDD(DUK_DDDPRINT("function call with identifier 'eval' " - "-> using EVALCALL, marking function " - "as may_direct_eval")); - call_op |= DUK_BC_CALL_FLAG_CALLED_AS_EVAL; - comp_ctx->curr_func.may_direct_eval = 1; - } - - duk_dup(thr, left->x1.valstack_idx); - if (duk__lookup_lhs(comp_ctx, ®_varbind, &rc_varname)) { - duk__emit_a_bc(comp_ctx, DUK_OP_CSREG | DUK__EMIT_FLAG_A_IS_SOURCE, reg_varbind, reg_cs + 0); - } else { - /* XXX: expand target register or constant field to - * reduce shuffling. - */ - DUK_ASSERT(DUK__ISCONST(rc_varname)); - duk__emit_a_b(comp_ctx, DUK_OP_CSVAR | DUK__EMIT_FLAG_BC_REGCONST, reg_cs + 0, rc_varname); - } - } else if (left->t == DUK_IVAL_PROP) { - /* Call through a property lookup, E5 Section 11.2.3, step 6.a.i, - * E5 Section 10.4.3. There used to be a separate CSPROP opcode - * but a typical call setup took 3 opcodes (e.g. LDREG, LDCONST, - * CSPROP) and the same can be achieved with ordinary loads. - */ -#if defined(DUK_USE_VERBOSE_ERRORS) - duk_regconst_t reg_key; -#endif - - DUK_DDD(DUK_DDDPRINT("function call with property base")); - - /* XXX: For Math.sin() this generates: LDCONST + LDREG + - * GETPROPC + call. The LDREG is unnecessary because LDCONST - * could be loaded directly into reg_cs + 1. This doesn't - * happen now because a variable cannot be in left->x1 of a - * DUK_IVAL_PROP. We could notice that left->x1 is a temp - * and reuse, but it would still be in the wrong position - * (reg_cs + 0 rather than reg_cs + 1). - */ - duk__ispec_toforcedreg(comp_ctx, &left->x1, reg_cs + 1); /* base */ -#if defined(DUK_USE_VERBOSE_ERRORS) - reg_key = duk__ispec_toregconst_raw(comp_ctx, &left->x2, -1, DUK__IVAL_FLAG_ALLOW_CONST /*flags*/); - duk__emit_a_b_c(comp_ctx, DUK_OP_GETPROPC | DUK__EMIT_FLAG_BC_REGCONST, reg_cs + 0, reg_cs + 1, reg_key); -#else - duk__ivalue_toforcedreg(comp_ctx, left, reg_cs + 0); /* base[key] */ -#endif - } else { - DUK_DDD(DUK_DDDPRINT("function call with register base")); - - duk__ivalue_toforcedreg(comp_ctx, left, reg_cs + 0); -#if 0 - duk__emit_a_bc(comp_ctx, - DUK_OP_CSREG | DUK__EMIT_FLAG_A_IS_SOURCE, - reg_cs + 0, - reg_cs + 0); /* in-place setup */ -#endif - /* Because of in-place setup, REGCS is equivalent to - * just this LDUNDEF. - */ - duk__emit_bc(comp_ctx, DUK_OP_LDUNDEF, reg_cs + 1); - } - - DUK__SETTEMP(comp_ctx, reg_cs + 2); - nargs = duk__parse_arguments(comp_ctx, res); /* parse args starting from "next temp" */ - - /* Tailcalls are handled by back-patching the already emitted opcode - * later in return statement parser. - */ - - duk__emit_a_bc(comp_ctx, call_op, (duk_regconst_t) nargs /*numargs*/, reg_cs /*basereg*/); - DUK__SETTEMP(comp_ctx, reg_cs + 1); /* result in csreg */ - - duk__ivalue_regconst(res, reg_cs); - return; - } - - /* POSTFIX EXPRESSION */ - - case DUK_TOK_INCREMENT: { - args = (DUK_OP_POSTINCP_RR << 16) + (DUK_OP_POSTINCR << 8) + 0; - goto postincdec; - } - case DUK_TOK_DECREMENT: { - args = (DUK_OP_POSTDECP_RR << 16) + (DUK_OP_POSTDECR << 8) + 0; - goto postincdec; - } - - /* EXPONENTIATION EXPRESSION */ - -#if defined(DUK_USE_ES7_EXP_OPERATOR) - case DUK_TOK_EXP: { - args = (DUK_OP_EXP << 8) + DUK__BP_EXPONENTIATION - 1; /* UnaryExpression */ - goto binary; - } -#endif - - /* MULTIPLICATIVE EXPRESSION */ - - case DUK_TOK_MUL: { - args = (DUK_OP_MUL << 8) + DUK__BP_MULTIPLICATIVE; /* ExponentiationExpression */ - goto binary; - } - case DUK_TOK_DIV: { - args = (DUK_OP_DIV << 8) + DUK__BP_MULTIPLICATIVE; /* ExponentiationExpression */ - goto binary; - } - case DUK_TOK_MOD: { - args = (DUK_OP_MOD << 8) + DUK__BP_MULTIPLICATIVE; /* ExponentiationExpression */ - goto binary; - } - - /* ADDITIVE EXPRESSION */ - - case DUK_TOK_ADD: { - args = (DUK_OP_ADD << 8) + DUK__BP_ADDITIVE; /* MultiplicativeExpression */ - goto binary; - } - case DUK_TOK_SUB: { - args = (DUK_OP_SUB << 8) + DUK__BP_ADDITIVE; /* MultiplicativeExpression */ - goto binary; - } - - /* SHIFT EXPRESSION */ - - case DUK_TOK_ALSHIFT: { - /* << */ - args = (DUK_OP_BASL << 8) + DUK__BP_SHIFT; - goto binary; - } - case DUK_TOK_ARSHIFT: { - /* >> */ - args = (DUK_OP_BASR << 8) + DUK__BP_SHIFT; - goto binary; - } - case DUK_TOK_RSHIFT: { - /* >>> */ - args = (DUK_OP_BLSR << 8) + DUK__BP_SHIFT; - goto binary; - } - - /* RELATIONAL EXPRESSION */ - - case DUK_TOK_LT: { - /* < */ - args = (DUK_OP_LT << 8) + DUK__BP_RELATIONAL; - goto binary; - } - case DUK_TOK_GT: { - args = (DUK_OP_GT << 8) + DUK__BP_RELATIONAL; - goto binary; - } - case DUK_TOK_LE: { - args = (DUK_OP_LE << 8) + DUK__BP_RELATIONAL; - goto binary; - } - case DUK_TOK_GE: { - args = (DUK_OP_GE << 8) + DUK__BP_RELATIONAL; - goto binary; - } - case DUK_TOK_INSTANCEOF: { - args = (DUK_OP_INSTOF << 8) + DUK__BP_RELATIONAL; - goto binary; - } - case DUK_TOK_IN: { - args = (DUK_OP_IN << 8) + DUK__BP_RELATIONAL; - goto binary; - } - - /* EQUALITY EXPRESSION */ - - case DUK_TOK_EQ: { - args = (DUK_OP_EQ << 8) + DUK__BP_EQUALITY; - goto binary; - } - case DUK_TOK_NEQ: { - args = (DUK_OP_NEQ << 8) + DUK__BP_EQUALITY; - goto binary; - } - case DUK_TOK_SEQ: { - args = (DUK_OP_SEQ << 8) + DUK__BP_EQUALITY; - goto binary; - } - case DUK_TOK_SNEQ: { - args = (DUK_OP_SNEQ << 8) + DUK__BP_EQUALITY; - goto binary; - } - - /* BITWISE EXPRESSIONS */ - - case DUK_TOK_BAND: { - args = (DUK_OP_BAND << 8) + DUK__BP_BAND; - goto binary; - } - case DUK_TOK_BXOR: { - args = (DUK_OP_BXOR << 8) + DUK__BP_BXOR; - goto binary; - } - case DUK_TOK_BOR: { - args = (DUK_OP_BOR << 8) + DUK__BP_BOR; - goto binary; - } - - /* LOGICAL EXPRESSIONS */ - - case DUK_TOK_LAND: { - /* syntactically left-associative but parsed as right-associative */ - args = (1 << 8) + DUK__BP_LAND - 1; - goto binary_logical; - } - case DUK_TOK_LOR: { - /* syntactically left-associative but parsed as right-associative */ - args = (0 << 8) + DUK__BP_LOR - 1; - goto binary_logical; - } - - /* CONDITIONAL EXPRESSION */ - - case DUK_TOK_QUESTION: { - /* XXX: common reg allocation need is to reuse a sub-expression's temp reg, - * but only if it really is a temp. Nothing fancy here now. - */ - duk_regconst_t reg_temp; - duk_int_t pc_jump1; - duk_int_t pc_jump2; - - reg_temp = DUK__ALLOCTEMP(comp_ctx); - duk__ivalue_toforcedreg(comp_ctx, left, reg_temp); - duk__emit_if_true_skip(comp_ctx, reg_temp); - pc_jump1 = duk__emit_jump_empty(comp_ctx); /* jump to false */ - duk__expr_toforcedreg(comp_ctx, - res, - DUK__BP_COMMA /*rbp_flags*/, - reg_temp /*forced_reg*/); /* AssignmentExpression */ - duk__advance_expect(comp_ctx, DUK_TOK_COLON); - pc_jump2 = duk__emit_jump_empty(comp_ctx); /* jump to end */ - duk__patch_jump_here(comp_ctx, pc_jump1); - duk__expr_toforcedreg(comp_ctx, - res, - DUK__BP_COMMA /*rbp_flags*/, - reg_temp /*forced_reg*/); /* AssignmentExpression */ - duk__patch_jump_here(comp_ctx, pc_jump2); - - DUK__SETTEMP(comp_ctx, reg_temp + 1); - duk__ivalue_regconst(res, reg_temp); - return; - } - - /* ASSIGNMENT EXPRESSION */ - - case DUK_TOK_EQUALSIGN: { - /* - * Assignments are right associative, allows e.g. - * a = 5; - * a += b = 9; // same as a += (b = 9) - * -> expression value 14, a = 14, b = 9 - * - * Right associativiness is reflected in the BP for recursion, - * "-1" ensures assignment operations are allowed. - * - * XXX: just use DUK__BP_COMMA (i.e. no need for 2-step bp levels)? - */ - args = (DUK_OP_NONE << 8) + DUK__BP_ASSIGNMENT - 1; /* DUK_OP_NONE marks a 'plain' assignment */ - goto assign; - } - case DUK_TOK_ADD_EQ: { - /* right associative */ - args = (DUK_OP_ADD << 8) + DUK__BP_ASSIGNMENT - 1; - goto assign; - } - case DUK_TOK_SUB_EQ: { - /* right associative */ - args = (DUK_OP_SUB << 8) + DUK__BP_ASSIGNMENT - 1; - goto assign; - } - case DUK_TOK_MUL_EQ: { - /* right associative */ - args = (DUK_OP_MUL << 8) + DUK__BP_ASSIGNMENT - 1; - goto assign; - } - case DUK_TOK_DIV_EQ: { - /* right associative */ - args = (DUK_OP_DIV << 8) + DUK__BP_ASSIGNMENT - 1; - goto assign; - } - case DUK_TOK_MOD_EQ: { - /* right associative */ - args = (DUK_OP_MOD << 8) + DUK__BP_ASSIGNMENT - 1; - goto assign; - } -#if defined(DUK_USE_ES7_EXP_OPERATOR) - case DUK_TOK_EXP_EQ: { - /* right associative */ - args = (DUK_OP_EXP << 8) + DUK__BP_ASSIGNMENT - 1; - goto assign; - } -#endif - case DUK_TOK_ALSHIFT_EQ: { - /* right associative */ - args = (DUK_OP_BASL << 8) + DUK__BP_ASSIGNMENT - 1; - goto assign; - } - case DUK_TOK_ARSHIFT_EQ: { - /* right associative */ - args = (DUK_OP_BASR << 8) + DUK__BP_ASSIGNMENT - 1; - goto assign; - } - case DUK_TOK_RSHIFT_EQ: { - /* right associative */ - args = (DUK_OP_BLSR << 8) + DUK__BP_ASSIGNMENT - 1; - goto assign; - } - case DUK_TOK_BAND_EQ: { - /* right associative */ - args = (DUK_OP_BAND << 8) + DUK__BP_ASSIGNMENT - 1; - goto assign; - } - case DUK_TOK_BOR_EQ: { - /* right associative */ - args = (DUK_OP_BOR << 8) + DUK__BP_ASSIGNMENT - 1; - goto assign; - } - case DUK_TOK_BXOR_EQ: { - /* right associative */ - args = (DUK_OP_BXOR << 8) + DUK__BP_ASSIGNMENT - 1; - goto assign; - } - - /* COMMA */ - - case DUK_TOK_COMMA: { - /* right associative */ - - duk__ivalue_toplain_ignore(comp_ctx, left); /* need side effects, not value */ - duk__expr_toplain(comp_ctx, res, DUK__BP_COMMA - 1 /*rbp_flags*/); - - /* return 'res' (of right part) as our result */ - return; - } - - default: { - break; - } - } - - DUK_D(DUK_DPRINT("parse error: unexpected token: %ld", (long) tok)); - DUK_ERROR_SYNTAX(thr, DUK_STR_PARSE_ERROR); - DUK_WO_NORETURN(return;); - -#if 0 - /* XXX: shared handling for 'duk__expr_lhs'? */ - if (comp_ctx->curr_func.paren_level == 0 && XXX) { - comp_ctx->curr_func.duk__expr_lhs = 0; - } -#endif - -binary: - /* - * Shared handling of binary operations - * - * args = (opcode << 8) + rbp - */ - { - duk__ivalue_toplain(comp_ctx, left); - duk__expr_toplain(comp_ctx, res, args & 0xff /*rbp_flags*/); - - /* combine left->x1 and res->x1 (right->x1, really) -> (left->x1 OP res->x1) */ - DUK_ASSERT(left->t == DUK_IVAL_PLAIN); - DUK_ASSERT(res->t == DUK_IVAL_PLAIN); - - res->t = DUK_IVAL_ARITH; - res->op = (args >> 8) & 0xff; - - res->x2.t = res->x1.t; - res->x2.regconst = res->x1.regconst; - duk_copy(thr, res->x1.valstack_idx, res->x2.valstack_idx); - - res->x1.t = left->x1.t; - res->x1.regconst = left->x1.regconst; - duk_copy(thr, left->x1.valstack_idx, res->x1.valstack_idx); - - DUK_DDD(DUK_DDDPRINT("binary op, res: t=%ld, x1.t=%ld, x1.regconst=0x%08lx, x2.t=%ld, x2.regconst=0x%08lx", - (long) res->t, - (long) res->x1.t, - (unsigned long) res->x1.regconst, - (long) res->x2.t, - (unsigned long) res->x2.regconst)); - return; - } - -binary_logical: - /* - * Shared handling for logical AND and logical OR. - * - * args = (truthval << 8) + rbp - * - * Truthval determines when to skip right-hand-side. - * For logical AND truthval=1, for logical OR truthval=0. - * - * See doc/compiler.rst for discussion on compiling logical - * AND and OR expressions. The approach here is very simplistic, - * generating extra jumps and multiple evaluations of truth values, - * but generates code on-the-fly with only local back-patching. - * - * Both logical AND and OR are syntactically left-associated. - * However, logical ANDs are compiled as right associative - * expressions, i.e. "A && B && C" as "A && (B && C)", to allow - * skip jumps to skip over the entire tail. Similarly for logical OR. - */ - - { - duk_regconst_t reg_temp; - duk_int_t pc_jump; - duk_small_uint_t args_truthval = args >> 8; - duk_small_uint_t args_rbp = args & 0xff; - - /* XXX: unoptimal use of temps, resetting */ - - reg_temp = DUK__ALLOCTEMP(comp_ctx); - - duk__ivalue_toforcedreg(comp_ctx, left, reg_temp); - DUK_ASSERT(DUK__ISREG(reg_temp)); - duk__emit_bc(comp_ctx, - (args_truthval ? DUK_OP_IFTRUE_R : DUK_OP_IFFALSE_R), - reg_temp); /* skip jump conditionally */ - pc_jump = duk__emit_jump_empty(comp_ctx); - duk__expr_toforcedreg(comp_ctx, res, args_rbp /*rbp_flags*/, reg_temp /*forced_reg*/); - duk__patch_jump_here(comp_ctx, pc_jump); - - duk__ivalue_regconst(res, reg_temp); - return; - } - -assign: - /* - * Shared assignment expression handling - * - * args = (opcode << 8) + rbp - * - * If 'opcode' is DUK_OP_NONE, plain assignment without arithmetic. - * Syntactically valid left-hand-side forms which are not accepted as - * left-hand-side values (e.g. as in "f() = 1") must NOT cause a - * SyntaxError, but rather a run-time ReferenceError. - * - * When evaluating X = Y, the LHS (X) is conceptually evaluated - * to a temporary first. The RHS is then evaluated. Finally, the - * is applied to the initial value of RHS (not the value after - * RHS evaluation), and written to X. Doing so concretely generates - * inefficient code so we'd like to avoid the temporary when possible. - * See: https://github.com/svaarala/duktape/pull/992. - * - * The expression value (final LHS value, written to RHS) is - * conceptually copied into a fresh temporary so that it won't - * change even if the LHS/RHS values change in outer expressions. - * For example, it'd be generally incorrect for the expression value - * to be the RHS register binding, unless there's a guarantee that it - * won't change during further expression evaluation. Using the - * temporary concretely produces inefficient bytecode, so we try to - * avoid the extra temporary for some known-to-be-safe cases. - * Currently the only safe case we detect is a "top level assignment", - * for example "x = y + z;", where the assignment expression value is - * ignored. - * See: test-dev-assign-expr.js and test-bug-assign-mutate-gh381.js. - */ - - { - duk_small_uint_t args_op = args >> 8; - duk_small_uint_t args_rbp = args & 0xff; - duk_bool_t toplevel_assign; - - /* XXX: here we need to know if 'left' is left-hand-side compatible. - * That information is no longer available from current expr parsing - * state; it would need to be carried into the 'left' ivalue or by - * some other means. - */ - - /* A top-level assignment is e.g. "x = y;". For these it's safe - * to use the RHS as-is as the expression value, even if the RHS - * is a reg-bound identifier. The RHS ('res') is right associative - * so it has consumed all other assignment level operations; the - * only relevant lower binding power construct is comma operator - * which will ignore the expression value provided here. Usually - * the top level assignment expression value is ignored, but it - * is relevant for e.g. eval code. - */ - toplevel_assign = (comp_ctx->curr_func.nud_count == 1 && /* one token before */ - comp_ctx->curr_func.led_count == 1); /* one operator (= assign) */ - DUK_DDD(DUK_DDDPRINT("assignment: nud_count=%ld, led_count=%ld, toplevel_assign=%ld", - (long) comp_ctx->curr_func.nud_count, - (long) comp_ctx->curr_func.led_count, - (long) toplevel_assign)); - - if (left->t == DUK_IVAL_VAR) { - duk_hstring *h_varname; - duk_regconst_t reg_varbind; - duk_regconst_t rc_varname; - - DUK_ASSERT(left->x1.t == DUK_ISPEC_VALUE); /* LHS is already side effect free */ - - h_varname = duk_known_hstring(thr, left->x1.valstack_idx); - if (duk__hstring_is_eval_or_arguments_in_strict_mode(comp_ctx, h_varname)) { - /* E5 Section 11.13.1 (and others for other assignments), step 4. */ - goto syntax_error_lvalue; - } - duk_dup(thr, left->x1.valstack_idx); - (void) duk__lookup_lhs(comp_ctx, ®_varbind, &rc_varname); - - if (args_op == DUK_OP_NONE) { - duk__expr(comp_ctx, res, args_rbp /*rbp_flags*/); - if (toplevel_assign) { - /* Any 'res' will do. */ - DUK_DDD(DUK_DDDPRINT("plain assignment, toplevel assign, use as is")); - } else { - /* 'res' must be a plain ivalue, and not register-bound variable. */ - DUK_DDD(DUK_DDDPRINT( - "plain assignment, not toplevel assign, ensure not a reg-bound identifier")); - if (res->t != DUK_IVAL_PLAIN || - (res->x1.t == DUK_ISPEC_REGCONST && DUK__ISREG_NOTTEMP(comp_ctx, res->x1.regconst))) { - duk__ivalue_totempconst(comp_ctx, res); - } - } - } else { - /* For X = Y we need to evaluate the pre-op - * value of X before evaluating the RHS: the RHS - * can change X, but when we do we must use - * the pre-op value. - */ - duk_regconst_t reg_temp; - - reg_temp = DUK__ALLOCTEMP(comp_ctx); - - if (reg_varbind >= 0) { - duk_regconst_t reg_res; - duk_regconst_t reg_src; - duk_int_t pc_temp_load; - duk_int_t pc_before_rhs; - duk_int_t pc_after_rhs; - - if (toplevel_assign) { - /* 'reg_varbind' is the operation result and can also - * become the expression value for top level assignments - * such as: "var x; x += y;". - */ - DUK_DD(DUK_DDPRINT("= expression is top level, write directly to reg_varbind")); - reg_res = reg_varbind; - } else { - /* Not safe to use 'reg_varbind' as assignment expression - * value, so go through a temp. - */ - DUK_DD(DUK_DDPRINT("= expression is not top level, write to reg_temp")); - reg_res = reg_temp; /* reg_res should be smallest possible */ - reg_temp = DUK__ALLOCTEMP(comp_ctx); - } - - /* Try to optimize X = Y for reg-bound - * variables. Detect side-effect free RHS - * narrowly by seeing whether it emits code. - * If not, rewind the code emitter and overwrite - * the unnecessary temp reg load. - */ - - pc_temp_load = duk__get_current_pc(comp_ctx); - duk__emit_a_bc(comp_ctx, DUK_OP_LDREG, reg_temp, reg_varbind); - - pc_before_rhs = duk__get_current_pc(comp_ctx); - duk__expr_toregconst(comp_ctx, res, args_rbp /*rbp_flags*/); - DUK_ASSERT(res->t == DUK_IVAL_PLAIN && res->x1.t == DUK_ISPEC_REGCONST); - pc_after_rhs = duk__get_current_pc(comp_ctx); - - DUK_DD(DUK_DDPRINT("pc_temp_load=%ld, pc_before_rhs=%ld, pc_after_rhs=%ld", - (long) pc_temp_load, - (long) pc_before_rhs, - (long) pc_after_rhs)); - - if (pc_after_rhs == pc_before_rhs) { - /* Note: if the reg_temp load generated shuffling - * instructions, we may need to rewind more than - * one instruction, so use explicit PC computation. - */ - DUK_DD(DUK_DDPRINT("rhs is side effect free, rewind and avoid unnecessary temp for " - "reg-based =")); - DUK_BW_ADD_PTR(comp_ctx->thr, - &comp_ctx->curr_func.bw_code, - (pc_temp_load - pc_before_rhs) * - (duk_int_t) sizeof(duk_compiler_instr)); - reg_src = reg_varbind; - } else { - DUK_DD(DUK_DDPRINT("rhs evaluation emitted code, not sure if rhs is side effect " - "free; use temp reg for LHS")); - reg_src = reg_temp; - } - - duk__emit_a_b_c(comp_ctx, - args_op | DUK__EMIT_FLAG_BC_REGCONST, - reg_res, - reg_src, - res->x1.regconst); - - res->x1.regconst = reg_res; - - /* Ensure compact use of temps. */ - if (DUK__ISREG_TEMP(comp_ctx, reg_res)) { - DUK__SETTEMP(comp_ctx, reg_res + 1); - } - } else { - /* When LHS is not register bound, always go through a - * temporary. No optimization for top level assignment. - */ - - duk__emit_a_bc(comp_ctx, DUK_OP_GETVAR, reg_temp, rc_varname); - - duk__expr_toregconst(comp_ctx, res, args_rbp /*rbp_flags*/); - DUK_ASSERT(res->t == DUK_IVAL_PLAIN && res->x1.t == DUK_ISPEC_REGCONST); - - duk__emit_a_b_c(comp_ctx, - args_op | DUK__EMIT_FLAG_BC_REGCONST, - reg_temp, - reg_temp, - res->x1.regconst); - res->x1.regconst = reg_temp; - } - - DUK_ASSERT(res->t == DUK_IVAL_PLAIN && res->x1.t == DUK_ISPEC_REGCONST); - } - - /* At this point 'res' holds the potential expression value. - * It can be basically any ivalue here, including a reg-bound - * identifier (if code above deems it safe) or a unary/binary - * operation. Operations must be resolved to a side effect free - * plain value, and the side effects must happen exactly once. - */ - - if (reg_varbind >= 0) { - if (res->t != DUK_IVAL_PLAIN) { - /* Resolve 'res' directly into the LHS binding, and use - * that as the expression value if safe. If not safe, - * resolve to a temp/const and copy to LHS. - */ - if (toplevel_assign) { - duk__ivalue_toforcedreg(comp_ctx, res, (duk_int_t) reg_varbind); - } else { - duk__ivalue_totempconst(comp_ctx, res); - duk__copy_ivalue(comp_ctx, res, left); /* use 'left' as a temp */ - duk__ivalue_toforcedreg(comp_ctx, left, (duk_int_t) reg_varbind); - } - } else { - /* Use 'res' as the expression value (it's side effect - * free and may be a plain value, a register, or a - * constant) and write it to the LHS binding too. - */ - duk__copy_ivalue(comp_ctx, res, left); /* use 'left' as a temp */ - duk__ivalue_toforcedreg(comp_ctx, left, (duk_int_t) reg_varbind); - } - } else { - /* Only a reg fits into 'A' so coerce 'res' into a register - * for PUTVAR. - * - * XXX: here the current A/B/C split is suboptimal: we could - * just use 9 bits for reg_res (and support constants) and 17 - * instead of 18 bits for the varname const index. - */ - - duk__ivalue_toreg(comp_ctx, res); - duk__emit_a_bc(comp_ctx, DUK_OP_PUTVAR | DUK__EMIT_FLAG_A_IS_SOURCE, res->x1.regconst, rc_varname); - } - - /* 'res' contains expression value */ - } else if (left->t == DUK_IVAL_PROP) { - /* E5 Section 11.13.1 (and others) step 4 never matches for prop writes -> no check */ - duk_regconst_t reg_obj; - duk_regconst_t rc_key; - duk_regconst_t rc_res; - duk_regconst_t reg_temp; - - /* Property access expressions ('a[b]') are critical to correct - * LHS evaluation ordering, see test-dev-assign-eval-order*.js. - * We must make sure that the LHS target slot (base object and - * key) don't change during RHS evaluation. The only concrete - * problem is a register reference to a variable-bound register - * (i.e., non-temp). Require temp regs for both key and base. - * - * Don't allow a constant for the object (even for a number - * etc), as it goes into the 'A' field of the opcode. - */ - - reg_obj = duk__ispec_toregconst_raw(comp_ctx, - &left->x1, - -1 /*forced_reg*/, - DUK__IVAL_FLAG_REQUIRE_TEMP /*flags*/); - - rc_key = duk__ispec_toregconst_raw(comp_ctx, - &left->x2, - -1 /*forced_reg*/, - DUK__IVAL_FLAG_REQUIRE_TEMP | DUK__IVAL_FLAG_ALLOW_CONST /*flags*/); - - /* Evaluate RHS only when LHS is safe. */ - - if (args_op == DUK_OP_NONE) { - duk__expr_toregconst(comp_ctx, res, args_rbp /*rbp_flags*/); - DUK_ASSERT(res->t == DUK_IVAL_PLAIN && res->x1.t == DUK_ISPEC_REGCONST); - rc_res = res->x1.regconst; - } else { - reg_temp = DUK__ALLOCTEMP(comp_ctx); - duk__emit_a_b_c(comp_ctx, DUK_OP_GETPROP | DUK__EMIT_FLAG_BC_REGCONST, reg_temp, reg_obj, rc_key); - - duk__expr_toregconst(comp_ctx, res, args_rbp /*rbp_flags*/); - DUK_ASSERT(res->t == DUK_IVAL_PLAIN && res->x1.t == DUK_ISPEC_REGCONST); - - duk__emit_a_b_c(comp_ctx, - args_op | DUK__EMIT_FLAG_BC_REGCONST, - reg_temp, - reg_temp, - res->x1.regconst); - rc_res = reg_temp; - } - - duk__emit_a_b_c(comp_ctx, - DUK_OP_PUTPROP | DUK__EMIT_FLAG_A_IS_SOURCE | DUK__EMIT_FLAG_BC_REGCONST, - reg_obj, - rc_key, - rc_res); - - duk__ivalue_regconst(res, rc_res); - } else { - /* No support for lvalues returned from new or function call expressions. - * However, these must NOT cause compile-time SyntaxErrors, but run-time - * ReferenceErrors. Both left and right sides of the assignment must be - * evaluated before throwing a ReferenceError. For instance: - * - * f() = g(); - * - * must result in f() being evaluated, then g() being evaluated, and - * finally, a ReferenceError being thrown. See E5 Section 11.13.1. - */ - - duk_regconst_t rc_res; - - /* First evaluate LHS fully to ensure all side effects are out. */ - duk__ivalue_toplain_ignore(comp_ctx, left); - - /* Then evaluate RHS fully (its value becomes the expression value too). - * Technically we'd need the side effect safety check here too, but because - * we always throw using INVLHS the result doesn't matter. - */ - rc_res = duk__expr_toregconst(comp_ctx, res, args_rbp /*rbp_flags*/); - - duk__emit_op_only(comp_ctx, DUK_OP_INVLHS); - - duk__ivalue_regconst(res, rc_res); - } - - return; - } - -postincdec : { - /* - * Post-increment/decrement will return the original value as its - * result value. However, even that value will be coerced using - * ToNumber() which is quite awkward. Specific bytecode opcodes - * are used to handle these semantics. - * - * Note that post increment/decrement has a "no LineTerminator here" - * restriction. This is handled by duk__expr_lbp(), which forcibly terminates - * the previous expression if a LineTerminator occurs before '++'/'--'. - */ - - duk_regconst_t reg_res; - duk_small_uint_t args_op1 = (args >> 8) & 0xff; /* DUK_OP_POSTINCR/DUK_OP_POSTDECR */ - duk_small_uint_t args_op2 = args >> 16; /* DUK_OP_POSTINCP_RR/DUK_OP_POSTDECP_RR */ - - /* Specific assumptions for opcode numbering. */ - DUK_ASSERT(DUK_OP_POSTINCR + 4 == DUK_OP_POSTINCV); - DUK_ASSERT(DUK_OP_POSTDECR + 4 == DUK_OP_POSTDECV); - - reg_res = DUK__ALLOCTEMP(comp_ctx); - - if (left->t == DUK_IVAL_VAR) { - duk_hstring *h_varname; - duk_regconst_t reg_varbind; - duk_regconst_t rc_varname; - - h_varname = duk_known_hstring(thr, left->x1.valstack_idx); - - if (duk__hstring_is_eval_or_arguments_in_strict_mode(comp_ctx, h_varname)) { - goto syntax_error; - } - - duk_dup(thr, left->x1.valstack_idx); - if (duk__lookup_lhs(comp_ctx, ®_varbind, &rc_varname)) { - duk__emit_a_bc(comp_ctx, - args_op1, /* e.g. DUK_OP_POSTINCR */ - reg_res, - reg_varbind); - } else { - duk__emit_a_bc(comp_ctx, - args_op1 + 4, /* e.g. DUK_OP_POSTINCV */ - reg_res, - rc_varname); - } - - DUK_DDD(DUK_DDDPRINT("postincdec to '%!O' -> reg_varbind=%ld, rc_varname=%ld", - (duk_heaphdr *) h_varname, - (long) reg_varbind, - (long) rc_varname)); - } else if (left->t == DUK_IVAL_PROP) { - duk_regconst_t reg_obj; /* allocate to reg only (not const) */ - duk_regconst_t rc_key; - - reg_obj = duk__ispec_toregconst_raw(comp_ctx, &left->x1, -1 /*forced_reg*/, 0 /*flags*/); /* don't allow const */ - rc_key = duk__ispec_toregconst_raw(comp_ctx, &left->x2, -1 /*forced_reg*/, DUK__IVAL_FLAG_ALLOW_CONST /*flags*/); - duk__emit_a_b_c(comp_ctx, - args_op2 | DUK__EMIT_FLAG_BC_REGCONST, /* e.g. DUK_OP_POSTINCP */ - reg_res, - reg_obj, - rc_key); - } else { - /* Technically return value is not needed because INVLHS will - * unconditially throw a ReferenceError. Coercion is necessary - * for proper semantics (consider ToNumber() called for an object). - * Use DUK_OP_UNP with a dummy register to get ToNumber(). - */ - duk__ivalue_toforcedreg(comp_ctx, left, reg_res); - duk__emit_bc(comp_ctx, DUK_OP_UNP, reg_res); /* for side effects, result ignored */ - duk__emit_op_only(comp_ctx, DUK_OP_INVLHS); - } - - DUK__SETTEMP(comp_ctx, reg_res + 1); - duk__ivalue_regconst(res, reg_res); - return; -} - -syntax_error: - DUK_ERROR_SYNTAX(thr, DUK_STR_INVALID_EXPRESSION); - DUK_WO_NORETURN(return;); - -syntax_error_lvalue: - DUK_ERROR_SYNTAX(thr, DUK_STR_INVALID_LVALUE); - DUK_WO_NORETURN(return;); -} - -DUK_LOCAL duk_small_uint_t duk__expr_lbp(duk_compiler_ctx *comp_ctx) { - duk_small_uint_t tok = comp_ctx->curr_token.t; - - DUK_ASSERT_DISABLE(tok >= DUK_TOK_MINVAL); /* unsigned */ - DUK_ASSERT(tok <= DUK_TOK_MAXVAL); - DUK_ASSERT(sizeof(duk__token_lbp) == DUK_TOK_MAXVAL + 1); - - /* XXX: integrate support for this into led() instead? - * Similar issue as post-increment/post-decrement. - */ - - /* prevent duk__expr_led() by using a binding power less than anything valid */ - if (tok == DUK_TOK_IN && !comp_ctx->curr_func.allow_in) { - return 0; - } - - if ((tok == DUK_TOK_DECREMENT || tok == DUK_TOK_INCREMENT) && (comp_ctx->curr_token.lineterm)) { - /* '++' or '--' in a post-increment/decrement position, - * and a LineTerminator occurs between the operator and - * the preceding expression. Force the previous expr - * to terminate, in effect treating e.g. "a,b\n++" as - * "a,b;++" (= SyntaxError). - */ - return 0; - } - - return DUK__TOKEN_LBP_GET_BP(duk__token_lbp[tok]); /* format is bit packed */ -} - -/* - * Expression parsing. - * - * Upon entry to 'expr' and its variants, 'curr_tok' is assumed to be the - * first token of the expression. Upon exit, 'curr_tok' will be the first - * token not part of the expression (e.g. semicolon terminating an expression - * statement). - */ - -#define DUK__EXPR_RBP_MASK 0xff -#define DUK__EXPR_FLAG_REJECT_IN (1 << 8) /* reject 'in' token (used for for-in) */ -#define DUK__EXPR_FLAG_ALLOW_EMPTY (1 << 9) /* allow empty expression */ -#define DUK__EXPR_FLAG_REQUIRE_INIT (1 << 10) /* require initializer for var/const */ - -/* main expression parser function */ -DUK_LOCAL void duk__expr(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags) { - duk_hthread *thr = comp_ctx->thr; - duk_ivalue tmp_alloc; /* 'res' is used for "left", and 'tmp' for "right" */ - duk_ivalue *tmp = &tmp_alloc; - duk_small_uint_t rbp; - - DUK__RECURSION_INCREASE(comp_ctx, thr); - - duk_require_stack(thr, DUK__PARSE_EXPR_SLOTS); - - /* filter out flags from exprtop rbp_flags here to save space */ - rbp = rbp_flags & DUK__EXPR_RBP_MASK; - - DUK_DDD(DUK_DDDPRINT("duk__expr(), rbp_flags=%ld, rbp=%ld, allow_in=%ld, paren_level=%ld", - (long) rbp_flags, - (long) rbp, - (long) comp_ctx->curr_func.allow_in, - (long) comp_ctx->curr_func.paren_level)); - - duk_memzero(&tmp_alloc, sizeof(tmp_alloc)); - tmp->x1.valstack_idx = duk_get_top(thr); - tmp->x2.valstack_idx = tmp->x1.valstack_idx + 1; - duk_push_undefined(thr); - duk_push_undefined(thr); - - /* XXX: where to release temp regs in intermediate expressions? - * e.g. 1+2+3 -> don't inflate temp register count when parsing this. - * that particular expression temp regs can be forced here. - */ - - /* XXX: increase ctx->expr_tokens here for every consumed token - * (this would be a nice statistic)? - */ - - if (comp_ctx->curr_token.t == DUK_TOK_SEMICOLON || comp_ctx->curr_token.t == DUK_TOK_RPAREN) { - /* XXX: possibly incorrect handling of empty expression */ - DUK_DDD(DUK_DDDPRINT("empty expression")); - if (!(rbp_flags & DUK__EXPR_FLAG_ALLOW_EMPTY)) { - DUK_ERROR_SYNTAX(thr, DUK_STR_EMPTY_EXPR_NOT_ALLOWED); - DUK_WO_NORETURN(return;); - } - duk_push_undefined(thr); - duk__ivalue_plain_fromstack(comp_ctx, res); - goto cleanup; - } - - duk__advance(comp_ctx); - duk__expr_nud(comp_ctx, res); /* reuse 'res' as 'left' */ - while (rbp < duk__expr_lbp(comp_ctx)) { - duk__advance(comp_ctx); - duk__expr_led(comp_ctx, res, tmp); - duk__copy_ivalue(comp_ctx, tmp, res); /* tmp -> res */ - } - -cleanup: - /* final result is already in 'res' */ - - duk_pop_2(thr); - - DUK__RECURSION_DECREASE(comp_ctx, thr); -} - -DUK_LOCAL void duk__exprtop(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags) { - duk_hthread *thr = comp_ctx->thr; - - /* Note: these variables must reside in 'curr_func' instead of the global - * context: when parsing function expressions, expression parsing is nested. - */ - comp_ctx->curr_func.nud_count = 0; - comp_ctx->curr_func.led_count = 0; - comp_ctx->curr_func.paren_level = 0; - comp_ctx->curr_func.expr_lhs = 1; - comp_ctx->curr_func.allow_in = (rbp_flags & DUK__EXPR_FLAG_REJECT_IN ? 0 : 1); - - duk__expr(comp_ctx, res, rbp_flags); - - if (!(rbp_flags & DUK__EXPR_FLAG_ALLOW_EMPTY) && duk__expr_is_empty(comp_ctx)) { - DUK_ERROR_SYNTAX(thr, DUK_STR_EMPTY_EXPR_NOT_ALLOWED); - DUK_WO_NORETURN(return;); - } -} - -/* A bunch of helpers (for size optimization) that combine duk__expr()/duk__exprtop() - * and result conversions. - * - * Each helper needs at least 2-3 calls to make it worth while to wrap. - */ - -#if 0 /* unused */ -DUK_LOCAL duk_regconst_t duk__expr_toreg(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags) { - duk__expr(comp_ctx, res, rbp_flags); - return duk__ivalue_toreg(comp_ctx, res); -} -#endif - -#if 0 /* unused */ -DUK_LOCAL duk_regconst_t duk__expr_totemp(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags) { - duk__expr(comp_ctx, res, rbp_flags); - return duk__ivalue_totemp(comp_ctx, res); -} -#endif - -DUK_LOCAL void duk__expr_toforcedreg(duk_compiler_ctx *comp_ctx, - duk_ivalue *res, - duk_small_uint_t rbp_flags, - duk_regconst_t forced_reg) { - DUK_ASSERT(forced_reg >= 0); - duk__expr(comp_ctx, res, rbp_flags); - duk__ivalue_toforcedreg(comp_ctx, res, forced_reg); -} - -DUK_LOCAL duk_regconst_t duk__expr_toregconst(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags) { - duk__expr(comp_ctx, res, rbp_flags); - return duk__ivalue_toregconst(comp_ctx, res); -} - -#if 0 /* unused */ -DUK_LOCAL duk_regconst_t duk__expr_totempconst(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags) { - duk__expr(comp_ctx, res, rbp_flags); - return duk__ivalue_totempconst(comp_ctx, res); -} -#endif - -DUK_LOCAL void duk__expr_toplain(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags) { - duk__expr(comp_ctx, res, rbp_flags); - duk__ivalue_toplain(comp_ctx, res); -} - -DUK_LOCAL void duk__expr_toplain_ignore(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags) { - duk__expr(comp_ctx, res, rbp_flags); - duk__ivalue_toplain_ignore(comp_ctx, res); -} - -DUK_LOCAL duk_regconst_t duk__exprtop_toreg(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags) { - duk__exprtop(comp_ctx, res, rbp_flags); - return duk__ivalue_toreg(comp_ctx, res); -} - -#if 0 /* unused */ -DUK_LOCAL duk_regconst_t duk__exprtop_totemp(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags) { - duk__exprtop(comp_ctx, res, rbp_flags); - return duk__ivalue_totemp(comp_ctx, res); -} -#endif - -DUK_LOCAL void duk__exprtop_toforcedreg(duk_compiler_ctx *comp_ctx, - duk_ivalue *res, - duk_small_uint_t rbp_flags, - duk_regconst_t forced_reg) { - DUK_ASSERT(forced_reg >= 0); - duk__exprtop(comp_ctx, res, rbp_flags); - duk__ivalue_toforcedreg(comp_ctx, res, forced_reg); -} - -DUK_LOCAL duk_regconst_t duk__exprtop_toregconst(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags) { - duk__exprtop(comp_ctx, res, rbp_flags); - return duk__ivalue_toregconst(comp_ctx, res); -} - -#if 0 /* unused */ -DUK_LOCAL void duk__exprtop_toplain_ignore(duk_compiler_ctx *comp_ctx, duk_ivalue *res, int rbp_flags) { - duk__exprtop(comp_ctx, res, rbp_flags); - duk__ivalue_toplain_ignore(comp_ctx, res); -} -#endif - -/* - * Parse an individual source element (top level statement) or a statement. - * - * Handles labeled statements automatically (peeling away labels before - * parsing an expression that follows the label(s)). - * - * Upon entry, 'curr_tok' contains the first token of the statement (parsed - * in "allow regexp literal" mode). Upon exit, 'curr_tok' contains the first - * token following the statement (if the statement has a terminator, this is - * the token after the terminator). - */ - -#define DUK__HAS_VAL (1 << 0) /* stmt has non-empty value */ -#define DUK__HAS_TERM (1 << 1) /* stmt has explicit/implicit semicolon terminator */ -#define DUK__ALLOW_AUTO_SEMI_ALWAYS (1 << 2) /* allow automatic semicolon even without lineterm (compatibility) */ -#define DUK__STILL_PROLOGUE (1 << 3) /* statement does not terminate directive prologue */ -#define DUK__IS_TERMINAL (1 << 4) /* statement is guaranteed to be terminal (control doesn't flow to next statement) */ - -/* Parse a single variable declaration (e.g. "i" or "i=10"). A leading 'var' - * has already been eaten. These is no return value in 'res', it is used only - * as a temporary. - * - * When called from 'for-in' statement parser, the initializer expression must - * not allow the 'in' token. The caller supply additional expression parsing - * flags (like DUK__EXPR_FLAG_REJECT_IN) in 'expr_flags'. - * - * Finally, out_rc_varname and out_reg_varbind are updated to reflect where - * the identifier is bound: - * - * If register bound: out_reg_varbind >= 0, out_rc_varname == 0 (ignore) - * If not register bound: out_reg_varbind < 0, out_rc_varname >= 0 - * - * These allow the caller to use the variable for further assignment, e.g. - * as is done in 'for-in' parsing. - */ - -DUK_LOCAL void duk__parse_var_decl(duk_compiler_ctx *comp_ctx, - duk_ivalue *res, - duk_small_uint_t expr_flags, - duk_regconst_t *out_reg_varbind, - duk_regconst_t *out_rc_varname) { - duk_hthread *thr = comp_ctx->thr; - duk_hstring *h_varname; - duk_regconst_t reg_varbind; - duk_regconst_t rc_varname; - - /* assume 'var' has been eaten */ - - /* Note: Identifier rejects reserved words */ - if (comp_ctx->curr_token.t != DUK_TOK_IDENTIFIER) { - goto syntax_error; - } - h_varname = comp_ctx->curr_token.str1; - - DUK_ASSERT(h_varname != NULL); - - /* strict mode restrictions (E5 Section 12.2.1) */ - if (duk__hstring_is_eval_or_arguments_in_strict_mode(comp_ctx, h_varname)) { - goto syntax_error; - } - - /* register declarations in first pass */ - if (comp_ctx->curr_func.in_scanning) { - duk_uarridx_t n; - DUK_DDD(DUK_DDDPRINT("register variable declaration %!O in pass 1", (duk_heaphdr *) h_varname)); - n = (duk_uarridx_t) duk_get_length(thr, comp_ctx->curr_func.decls_idx); - duk_push_hstring(thr, h_varname); - duk_put_prop_index(thr, comp_ctx->curr_func.decls_idx, n); - duk_push_int(thr, DUK_DECL_TYPE_VAR + (0 << 8)); - duk_put_prop_index(thr, comp_ctx->curr_func.decls_idx, n + 1); - } - - duk_push_hstring(thr, h_varname); /* push before advancing to keep reachable */ - - /* register binding lookup is based on varmap (even in first pass) */ - duk_dup_top(thr); - (void) duk__lookup_lhs(comp_ctx, ®_varbind, &rc_varname); - - duk__advance(comp_ctx); /* eat identifier */ - - if (comp_ctx->curr_token.t == DUK_TOK_EQUALSIGN) { - duk__advance(comp_ctx); - - DUK_DDD(DUK_DDDPRINT("vardecl, assign to '%!O' -> reg_varbind=%ld, rc_varname=%ld", - (duk_heaphdr *) h_varname, - (long) reg_varbind, - (long) rc_varname)); - - duk__exprtop(comp_ctx, res, DUK__BP_COMMA | expr_flags /*rbp_flags*/); /* AssignmentExpression */ - - if (reg_varbind >= 0) { - duk__ivalue_toforcedreg(comp_ctx, res, reg_varbind); - } else { - duk_regconst_t reg_val; - reg_val = duk__ivalue_toreg(comp_ctx, res); - duk__emit_a_bc(comp_ctx, DUK_OP_PUTVAR | DUK__EMIT_FLAG_A_IS_SOURCE, reg_val, rc_varname); - } - } else { - if (expr_flags & DUK__EXPR_FLAG_REQUIRE_INIT) { - /* Used for minimal 'const': initializer required. */ - goto syntax_error; - } - } - - duk_pop(thr); /* pop varname */ - - *out_rc_varname = rc_varname; - *out_reg_varbind = reg_varbind; - - return; - -syntax_error: - DUK_ERROR_SYNTAX(thr, DUK_STR_INVALID_VAR_DECLARATION); - DUK_WO_NORETURN(return;); -} - -DUK_LOCAL void duk__parse_var_stmt(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t expr_flags) { - duk_regconst_t reg_varbind; - duk_regconst_t rc_varname; - - duk__advance(comp_ctx); /* eat 'var' */ - - for (;;) { - /* rc_varname and reg_varbind are ignored here */ - duk__parse_var_decl(comp_ctx, res, 0 | expr_flags, ®_varbind, &rc_varname); - - if (comp_ctx->curr_token.t != DUK_TOK_COMMA) { - break; - } - duk__advance(comp_ctx); - } -} - -DUK_LOCAL void duk__parse_for_stmt(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_int_t pc_label_site) { - duk_hthread *thr = comp_ctx->thr; - duk_int_t pc_v34_lhs; /* start variant 3/4 left-hand-side code (L1 in doc/compiler.rst example) */ - duk_regconst_t temp_reset; /* knock back "next temp" to this whenever possible */ - duk_regconst_t reg_temps; /* preallocated temporaries (2) for variants 3 and 4 */ - - DUK_DDD(DUK_DDDPRINT("start parsing a for/for-in statement")); - - /* Two temporaries are preallocated here for variants 3 and 4 which need - * registers which are never clobbered by expressions in the loop - * (concretely: for the enumerator object and the next enumerated value). - * Variants 1 and 2 "release" these temps. - */ - - reg_temps = DUK__ALLOCTEMPS(comp_ctx, 2); - - temp_reset = DUK__GETTEMP(comp_ctx); - - /* - * For/for-in main variants are: - * - * 1. for (ExpressionNoIn_opt; Expression_opt; Expression_opt) Statement - * 2. for (var VariableDeclarationNoIn; Expression_opt; Expression_opt) Statement - * 3. for (LeftHandSideExpression in Expression) Statement - * 4. for (var VariableDeclarationNoIn in Expression) Statement - * - * Parsing these without arbitrary lookahead or backtracking is relatively - * tricky but we manage to do so for now. - * - * See doc/compiler.rst for a detailed discussion of control flow - * issues, evaluation order issues, etc. - */ - - duk__advance(comp_ctx); /* eat 'for' */ - duk__advance_expect(comp_ctx, DUK_TOK_LPAREN); - - DUK_DDD(DUK_DDDPRINT("detecting for/for-in loop variant, pc=%ld", (long) duk__get_current_pc(comp_ctx))); - - /* a label site has been emitted by duk__parse_stmt() automatically - * (it will also emit the ENDLABEL). - */ - - if (comp_ctx->curr_token.t == DUK_TOK_VAR) { - /* - * Variant 2 or 4 - */ - - duk_regconst_t reg_varbind; /* variable binding register if register-bound (otherwise < 0) */ - duk_regconst_t rc_varname; /* variable name reg/const, if variable not register-bound */ - - duk__advance(comp_ctx); /* eat 'var' */ - duk__parse_var_decl(comp_ctx, res, DUK__EXPR_FLAG_REJECT_IN, ®_varbind, &rc_varname); - DUK__SETTEMP(comp_ctx, temp_reset); - - if (comp_ctx->curr_token.t == DUK_TOK_IN) { - /* - * Variant 4 - */ - - DUK_DDD(DUK_DDDPRINT("detected for variant 4: for (var VariableDeclarationNoIn in Expression) Statement")); - pc_v34_lhs = duk__get_current_pc(comp_ctx); /* jump is inserted here */ - if (reg_varbind >= 0) { - duk__emit_a_bc(comp_ctx, DUK_OP_LDREG, reg_varbind, reg_temps + 0); - } else { - duk__emit_a_bc(comp_ctx, DUK_OP_PUTVAR | DUK__EMIT_FLAG_A_IS_SOURCE, reg_temps + 0, rc_varname); - } - goto parse_3_or_4; - } else { - /* - * Variant 2 - */ - - DUK_DDD(DUK_DDDPRINT( - "detected for variant 2: for (var VariableDeclarationNoIn; Expression_opt; Expression_opt) Statement")); - for (;;) { - /* more initializers */ - if (comp_ctx->curr_token.t != DUK_TOK_COMMA) { - break; - } - DUK_DDD(DUK_DDDPRINT("variant 2 has another variable initializer")); - - duk__advance(comp_ctx); /* eat comma */ - duk__parse_var_decl(comp_ctx, res, DUK__EXPR_FLAG_REJECT_IN, ®_varbind, &rc_varname); - } - goto parse_1_or_2; - } - } else { - /* - * Variant 1 or 3 - */ - - pc_v34_lhs = duk__get_current_pc(comp_ctx); /* jump is inserted here (variant 3) */ - - /* Note that duk__exprtop() here can clobber any reg above current temp_next, - * so any loop variables (e.g. enumerator) must be "preallocated". - */ - - /* don't coerce yet to a plain value (variant 3 needs special handling) */ - duk__exprtop(comp_ctx, - res, - DUK__BP_FOR_EXPR | DUK__EXPR_FLAG_REJECT_IN | - DUK__EXPR_FLAG_ALLOW_EMPTY /*rbp_flags*/); /* Expression */ - if (comp_ctx->curr_token.t == DUK_TOK_IN) { - /* - * Variant 3 - */ - - /* XXX: need to determine LHS type, and check that it is LHS compatible */ - DUK_DDD(DUK_DDDPRINT("detected for variant 3: for (LeftHandSideExpression in Expression) Statement")); - if (duk__expr_is_empty(comp_ctx)) { - goto syntax_error; /* LeftHandSideExpression does not allow empty expression */ - } - - if (res->t == DUK_IVAL_VAR) { - duk_regconst_t reg_varbind; - duk_regconst_t rc_varname; - - duk_dup(thr, res->x1.valstack_idx); - if (duk__lookup_lhs(comp_ctx, ®_varbind, &rc_varname)) { - duk__emit_a_bc(comp_ctx, DUK_OP_LDREG, reg_varbind, reg_temps + 0); - } else { - duk__emit_a_bc(comp_ctx, - DUK_OP_PUTVAR | DUK__EMIT_FLAG_A_IS_SOURCE, - reg_temps + 0, - rc_varname); - } - } else if (res->t == DUK_IVAL_PROP) { - /* Don't allow a constant for the object (even for a number etc), as - * it goes into the 'A' field of the opcode. - */ - duk_regconst_t reg_obj; - duk_regconst_t rc_key; - reg_obj = duk__ispec_toregconst_raw(comp_ctx, - &res->x1, - -1 /*forced_reg*/, - 0 /*flags*/); /* don't allow const */ - rc_key = duk__ispec_toregconst_raw(comp_ctx, - &res->x2, - -1 /*forced_reg*/, - DUK__IVAL_FLAG_ALLOW_CONST /*flags*/); - duk__emit_a_b_c(comp_ctx, - DUK_OP_PUTPROP | DUK__EMIT_FLAG_A_IS_SOURCE | DUK__EMIT_FLAG_BC_REGCONST, - reg_obj, - rc_key, - reg_temps + 0); - } else { - duk__ivalue_toplain_ignore(comp_ctx, res); /* just in case */ - duk__emit_op_only(comp_ctx, DUK_OP_INVLHS); - } - goto parse_3_or_4; - } else { - /* - * Variant 1 - */ - - DUK_DDD(DUK_DDDPRINT( - "detected for variant 1: for (ExpressionNoIn_opt; Expression_opt; Expression_opt) Statement")); - duk__ivalue_toplain_ignore(comp_ctx, res); - goto parse_1_or_2; - } - } - -parse_1_or_2: - /* - * Parse variant 1 or 2. The first part expression (which differs - * in the variants) has already been parsed and its code emitted. - * - * reg_temps + 0: unused - * reg_temps + 1: unused - */ - { - duk_regconst_t rc_cond; - duk_int_t pc_l1, pc_l2, pc_l3, pc_l4; - duk_int_t pc_jumpto_l3, pc_jumpto_l4; - duk_bool_t expr_c_empty; - - DUK_DDD(DUK_DDDPRINT("shared code for parsing variants 1 and 2")); - - /* "release" preallocated temps since we won't need them */ - temp_reset = reg_temps + 0; - DUK__SETTEMP(comp_ctx, temp_reset); - - duk__advance_expect(comp_ctx, DUK_TOK_SEMICOLON); - - pc_l1 = duk__get_current_pc(comp_ctx); - duk__exprtop(comp_ctx, res, DUK__BP_FOR_EXPR | DUK__EXPR_FLAG_ALLOW_EMPTY /*rbp_flags*/); /* Expression_opt */ - if (duk__expr_is_empty(comp_ctx)) { - /* no need to coerce */ - pc_jumpto_l3 = duk__emit_jump_empty(comp_ctx); /* to body */ - pc_jumpto_l4 = -1; /* omitted */ - } else { - rc_cond = duk__ivalue_toregconst(comp_ctx, res); - duk__emit_if_false_skip(comp_ctx, rc_cond); - pc_jumpto_l3 = duk__emit_jump_empty(comp_ctx); /* to body */ - pc_jumpto_l4 = duk__emit_jump_empty(comp_ctx); /* to exit */ - } - DUK__SETTEMP(comp_ctx, temp_reset); - - duk__advance_expect(comp_ctx, DUK_TOK_SEMICOLON); - - pc_l2 = duk__get_current_pc(comp_ctx); - duk__exprtop(comp_ctx, res, DUK__BP_FOR_EXPR | DUK__EXPR_FLAG_ALLOW_EMPTY /*rbp_flags*/); /* Expression_opt */ - if (duk__expr_is_empty(comp_ctx)) { - /* no need to coerce */ - expr_c_empty = 1; - /* JUMP L1 omitted */ - } else { - duk__ivalue_toplain_ignore(comp_ctx, res); - expr_c_empty = 0; - duk__emit_jump(comp_ctx, pc_l1); - } - DUK__SETTEMP(comp_ctx, temp_reset); - - comp_ctx->curr_func.allow_regexp_in_adv = 1; - duk__advance_expect(comp_ctx, DUK_TOK_RPAREN); /* Allow RegExp as part of next stmt. */ - - pc_l3 = duk__get_current_pc(comp_ctx); - duk__parse_stmt(comp_ctx, res, 0 /*allow_source_elem*/); - if (expr_c_empty) { - duk__emit_jump(comp_ctx, pc_l1); - } else { - duk__emit_jump(comp_ctx, pc_l2); - } - /* temp reset is not necessary after duk__parse_stmt(), which already does it */ - - pc_l4 = duk__get_current_pc(comp_ctx); - - DUK_DDD(DUK_DDDPRINT("patching jumps: jumpto_l3: %ld->%ld, jumpto_l4: %ld->%ld, " - "break: %ld->%ld, continue: %ld->%ld", - (long) pc_jumpto_l3, - (long) pc_l3, - (long) pc_jumpto_l4, - (long) pc_l4, - (long) (pc_label_site + 1), - (long) pc_l4, - (long) (pc_label_site + 2), - (long) pc_l2)); - - duk__patch_jump(comp_ctx, pc_jumpto_l3, pc_l3); - duk__patch_jump(comp_ctx, pc_jumpto_l4, pc_l4); - duk__patch_jump(comp_ctx, pc_label_site + 1, pc_l4); /* break jump */ - duk__patch_jump(comp_ctx, pc_label_site + 2, expr_c_empty ? pc_l1 : pc_l2); /* continue jump */ - } - goto finished; - -parse_3_or_4: - /* - * Parse variant 3 or 4. - * - * For variant 3 (e.g. "for (A in C) D;") the code for A (except the - * final property/variable write) has already been emitted. The first - * instruction of that code is at pc_v34_lhs; a JUMP needs to be inserted - * there to satisfy control flow needs. - * - * For variant 4, if the variable declaration had an initializer - * (e.g. "for (var A = B in C) D;") the code for the assignment - * (B) has already been emitted. - * - * Variables set before entering here: - * - * pc_v34_lhs: insert a "JUMP L2" here (see doc/compiler.rst example). - * reg_temps + 0: iteration target value (written to LHS) - * reg_temps + 1: enumerator object - */ - { - duk_int_t pc_l1, pc_l2, pc_l3, pc_l4, pc_l5; - duk_int_t pc_jumpto_l2, pc_jumpto_l3, pc_jumpto_l4, pc_jumpto_l5; - duk_regconst_t reg_target; - - DUK_DDD(DUK_DDDPRINT("shared code for parsing variants 3 and 4, pc_v34_lhs=%ld", (long) pc_v34_lhs)); - - DUK__SETTEMP(comp_ctx, temp_reset); - - /* First we need to insert a jump in the middle of previously - * emitted code to get the control flow right. No jumps can - * cross the position where the jump is inserted. See doc/compiler.rst - * for discussion on the intricacies of control flow and side effects - * for variants 3 and 4. - */ - - duk__insert_jump_entry(comp_ctx, pc_v34_lhs); - pc_jumpto_l2 = pc_v34_lhs; /* inserted jump */ - pc_l1 = pc_v34_lhs + 1; /* +1, right after inserted jump */ - - /* The code for writing reg_temps + 0 to the left hand side has already - * been emitted. - */ - - pc_jumpto_l3 = duk__emit_jump_empty(comp_ctx); /* -> loop body */ - - duk__advance(comp_ctx); /* eat 'in' */ - - /* Parse enumeration target and initialize enumerator. For 'null' and 'undefined', - * INITENUM will creates a 'null' enumerator which works like an empty enumerator - * (E5 Section 12.6.4, step 3). Note that INITENUM requires the value to be in a - * register (constant not allowed). - */ - - pc_l2 = duk__get_current_pc(comp_ctx); - reg_target = duk__exprtop_toreg(comp_ctx, res, DUK__BP_FOR_EXPR /*rbp_flags*/); /* Expression */ - duk__emit_b_c(comp_ctx, DUK_OP_INITENUM | DUK__EMIT_FLAG_B_IS_TARGET, reg_temps + 1, reg_target); - pc_jumpto_l4 = duk__emit_jump_empty(comp_ctx); - DUK__SETTEMP(comp_ctx, temp_reset); - - comp_ctx->curr_func.allow_regexp_in_adv = 1; - duk__advance_expect(comp_ctx, DUK_TOK_RPAREN); /* Allow RegExp as part of next stmt. */ - - pc_l3 = duk__get_current_pc(comp_ctx); - duk__parse_stmt(comp_ctx, res, 0 /*allow_source_elem*/); - /* temp reset is not necessary after duk__parse_stmt(), which already does it */ - - /* NEXTENUM needs a jump slot right after the main opcode. - * We need the code emitter to reserve the slot: if there's - * target shuffling, the target shuffle opcodes must happen - * after the jump slot (for NEXTENUM the shuffle opcodes are - * not needed if the enum is finished). - */ - pc_l4 = duk__get_current_pc(comp_ctx); - duk__emit_b_c(comp_ctx, - DUK_OP_NEXTENUM | DUK__EMIT_FLAG_B_IS_TARGET | DUK__EMIT_FLAG_RESERVE_JUMPSLOT, - reg_temps + 0, - reg_temps + 1); - pc_jumpto_l5 = comp_ctx->emit_jumpslot_pc; /* NEXTENUM jump slot: executed when enum finished */ - duk__emit_jump(comp_ctx, pc_l1); /* jump to next loop, using reg_v34_iter as iterated value */ - - pc_l5 = duk__get_current_pc(comp_ctx); - - /* XXX: since the enumerator may be a memory expensive object, - * perhaps clear it explicitly here? If so, break jump must - * go through this clearing operation. - */ - - DUK_DDD(DUK_DDDPRINT("patching jumps: jumpto_l2: %ld->%ld, jumpto_l3: %ld->%ld, " - "jumpto_l4: %ld->%ld, jumpto_l5: %ld->%ld, " - "break: %ld->%ld, continue: %ld->%ld", - (long) pc_jumpto_l2, - (long) pc_l2, - (long) pc_jumpto_l3, - (long) pc_l3, - (long) pc_jumpto_l4, - (long) pc_l4, - (long) pc_jumpto_l5, - (long) pc_l5, - (long) (pc_label_site + 1), - (long) pc_l5, - (long) (pc_label_site + 2), - (long) pc_l4)); - - duk__patch_jump(comp_ctx, pc_jumpto_l2, pc_l2); - duk__patch_jump(comp_ctx, pc_jumpto_l3, pc_l3); - duk__patch_jump(comp_ctx, pc_jumpto_l4, pc_l4); - duk__patch_jump(comp_ctx, pc_jumpto_l5, pc_l5); - duk__patch_jump(comp_ctx, pc_label_site + 1, pc_l5); /* break jump */ - duk__patch_jump(comp_ctx, pc_label_site + 2, pc_l4); /* continue jump */ - } - goto finished; - -finished: - DUK_DDD(DUK_DDDPRINT("end parsing a for/for-in statement")); - return; - -syntax_error: - DUK_ERROR_SYNTAX(thr, DUK_STR_INVALID_FOR); - DUK_WO_NORETURN(return;); -} - -DUK_LOCAL void duk__parse_switch_stmt(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_int_t pc_label_site) { - duk_hthread *thr = comp_ctx->thr; - duk_regconst_t temp_at_loop; - duk_regconst_t rc_switch; /* reg/const for switch value */ - duk_regconst_t rc_case; /* reg/const for case value */ - duk_regconst_t reg_temp; /* general temp register */ - duk_int_t pc_prevcase = -1; - duk_int_t pc_prevstmt = -1; - duk_int_t pc_default = -1; /* -1 == not set, -2 == pending (next statement list) */ - - /* Note: negative pc values are ignored when patching jumps, so no explicit checks needed */ - - /* - * Switch is pretty complicated because of several conflicting concerns: - * - * - Want to generate code without an intermediate representation, - * i.e., in one go - * - * - Case selectors are expressions, not values, and may thus e.g. throw - * exceptions (which causes evaluation order concerns) - * - * - Evaluation semantics of case selectors and default clause need to be - * carefully implemented to provide correct behavior even with case value - * side effects - * - * - Fall through case and default clauses; avoiding dead JUMPs if case - * ends with an unconditional jump (a break or a continue) - * - * - The same case value may occur multiple times, but evaluation rules - * only process the first match before switching to a "propagation" mode - * where case values are no longer evaluated - * - * See E5 Section 12.11. Also see doc/compiler.rst for compilation - * discussion. - */ - - duk__advance(comp_ctx); - duk__advance_expect(comp_ctx, DUK_TOK_LPAREN); - rc_switch = duk__exprtop_toregconst(comp_ctx, res, DUK__BP_FOR_EXPR /*rbp_flags*/); - duk__advance_expect(comp_ctx, DUK_TOK_RPAREN); /* RegExp mode does not matter. */ - duk__advance_expect(comp_ctx, DUK_TOK_LCURLY); - - DUK_DDD(DUK_DDDPRINT("switch value in register %ld", (long) rc_switch)); - - temp_at_loop = DUK__GETTEMP(comp_ctx); - - for (;;) { - duk_int_t num_stmts; - duk_small_uint_t tok; - - /* sufficient for keeping temp reg numbers in check */ - DUK__SETTEMP(comp_ctx, temp_at_loop); - - if (comp_ctx->curr_token.t == DUK_TOK_RCURLY) { - break; - } - - /* - * Parse a case or default clause. - */ - - if (comp_ctx->curr_token.t == DUK_TOK_CASE) { - /* - * Case clause. - * - * Note: cannot use reg_case as a temp register (for SEQ target) - * because it may be a constant. - */ - - duk__patch_jump_here(comp_ctx, pc_prevcase); /* chain jumps for case - * evaluation and checking - */ - - duk__advance(comp_ctx); - rc_case = duk__exprtop_toregconst(comp_ctx, res, DUK__BP_FOR_EXPR /*rbp_flags*/); - duk__advance_expect(comp_ctx, DUK_TOK_COLON); - - reg_temp = DUK__ALLOCTEMP(comp_ctx); - duk__emit_a_b_c(comp_ctx, DUK_OP_SEQ | DUK__EMIT_FLAG_BC_REGCONST, reg_temp, rc_switch, rc_case); - duk__emit_if_true_skip(comp_ctx, reg_temp); - - /* jump to next case clause */ - pc_prevcase = duk__emit_jump_empty(comp_ctx); /* no match, next case */ - - /* statements go here (if any) on next loop */ - } else if (comp_ctx->curr_token.t == DUK_TOK_DEFAULT) { - /* - * Default clause. - */ - - if (pc_default >= 0) { - goto syntax_error; - } - duk__advance(comp_ctx); - duk__advance_expect(comp_ctx, DUK_TOK_COLON); - - /* Fix for https://github.com/svaarala/duktape/issues/155: - * If 'default' is first clause (detected by pc_prevcase < 0) - * we need to ensure we stay in the matching chain. - */ - if (pc_prevcase < 0) { - DUK_DD(DUK_DDPRINT("default clause is first, emit prevcase jump")); - pc_prevcase = duk__emit_jump_empty(comp_ctx); - } - - /* default clause matches next statement list (if any) */ - pc_default = -2; - } else { - /* Code is not accepted before the first case/default clause */ - goto syntax_error; - } - - /* - * Parse code after the clause. Possible terminators are - * 'case', 'default', and '}'. - * - * Note that there may be no code at all, not even an empty statement, - * between case clauses. This must be handled just like an empty statement - * (omitting seemingly pointless JUMPs), to avoid situations like - * test-bug-case-fallthrough.js. - */ - - num_stmts = 0; - if (pc_default == -2) { - pc_default = duk__get_current_pc(comp_ctx); - } - - /* Note: this is correct even for default clause statements: - * they participate in 'fall-through' behavior even if the - * default clause is in the middle. - */ - duk__patch_jump_here(comp_ctx, pc_prevstmt); /* chain jumps for 'fall-through' - * after a case matches. - */ - - for (;;) { - tok = comp_ctx->curr_token.t; - if (tok == DUK_TOK_CASE || tok == DUK_TOK_DEFAULT || tok == DUK_TOK_RCURLY) { - break; - } - num_stmts++; - duk__parse_stmt(comp_ctx, res, 0 /*allow_source_elem*/); - } - - /* fall-through jump to next code of next case (backpatched) */ - pc_prevstmt = duk__emit_jump_empty(comp_ctx); - - /* XXX: would be nice to omit this jump when the jump is not - * reachable, at least in the obvious cases (such as the case - * ending with a 'break'. - * - * Perhaps duk__parse_stmt() could provide some info on whether - * the statement is a "dead end"? - * - * If implemented, just set pc_prevstmt to -1 when not needed. - */ - } - - DUK_ASSERT(comp_ctx->curr_token.t == DUK_TOK_RCURLY); - comp_ctx->curr_func.allow_regexp_in_adv = 1; - duk__advance(comp_ctx); /* Allow RegExp as part of next stmt. */ - - /* default case control flow patchup; note that if pc_prevcase < 0 - * (i.e. no case clauses), control enters default case automatically. - */ - if (pc_default >= 0) { - /* default case exists: go there if no case matches */ - duk__patch_jump(comp_ctx, pc_prevcase, pc_default); - } else { - /* default case does not exist, or no statements present - * after default case: finish case evaluation - */ - duk__patch_jump_here(comp_ctx, pc_prevcase); - } - - /* fall-through control flow patchup; note that pc_prevstmt may be - * < 0 (i.e. no case clauses), in which case this is a no-op. - */ - duk__patch_jump_here(comp_ctx, pc_prevstmt); - - /* continue jump not patched, an INVALID opcode remains there */ - duk__patch_jump_here(comp_ctx, pc_label_site + 1); /* break jump */ - - /* Note: 'fast' breaks will jump to pc_label_site + 1, which will - * then jump here. The double jump will be eliminated by a - * peephole pass, resulting in an optimal jump here. The label - * site jumps will remain in bytecode and will waste code size. - */ - - return; - -syntax_error: - DUK_ERROR_SYNTAX(thr, DUK_STR_INVALID_SWITCH); - DUK_WO_NORETURN(return;); -} - -DUK_LOCAL void duk__parse_if_stmt(duk_compiler_ctx *comp_ctx, duk_ivalue *res) { - duk_regconst_t temp_reset; - duk_regconst_t rc_cond; - duk_int_t pc_jump_false; - - DUK_DDD(DUK_DDDPRINT("begin parsing if statement")); - - temp_reset = DUK__GETTEMP(comp_ctx); - - duk__advance(comp_ctx); /* eat 'if' */ - duk__advance_expect(comp_ctx, DUK_TOK_LPAREN); - - rc_cond = duk__exprtop_toregconst(comp_ctx, res, DUK__BP_FOR_EXPR /*rbp_flags*/); - duk__emit_if_true_skip(comp_ctx, rc_cond); - pc_jump_false = duk__emit_jump_empty(comp_ctx); /* jump to end or else part */ - DUK__SETTEMP(comp_ctx, temp_reset); - - comp_ctx->curr_func.allow_regexp_in_adv = 1; - duk__advance_expect(comp_ctx, DUK_TOK_RPAREN); /* Allow RegExp as part of next stmt. */ - - duk__parse_stmt(comp_ctx, res, 0 /*allow_source_elem*/); - - /* The 'else' ambiguity is resolved by 'else' binding to the innermost - * construct, so greedy matching is correct here. - */ - - if (comp_ctx->curr_token.t == DUK_TOK_ELSE) { - duk_int_t pc_jump_end; - - DUK_DDD(DUK_DDDPRINT("if has else part")); - - duk__advance(comp_ctx); - - pc_jump_end = duk__emit_jump_empty(comp_ctx); /* jump from true part to end */ - duk__patch_jump_here(comp_ctx, pc_jump_false); - - duk__parse_stmt(comp_ctx, res, 0 /*allow_source_elem*/); - - duk__patch_jump_here(comp_ctx, pc_jump_end); - } else { - DUK_DDD(DUK_DDDPRINT("if does not have else part")); - - duk__patch_jump_here(comp_ctx, pc_jump_false); - } - - DUK_DDD(DUK_DDDPRINT("end parsing if statement")); -} - -DUK_LOCAL void duk__parse_do_stmt(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_int_t pc_label_site) { - duk_regconst_t rc_cond; - duk_int_t pc_start; - - DUK_DDD(DUK_DDDPRINT("begin parsing do statement")); - - duk__advance(comp_ctx); /* Eat 'do'; allow RegExp as part of next stmt. */ - - pc_start = duk__get_current_pc(comp_ctx); - duk__parse_stmt(comp_ctx, res, 0 /*allow_source_elem*/); - duk__patch_jump_here(comp_ctx, pc_label_site + 2); /* continue jump */ - - duk__advance_expect(comp_ctx, DUK_TOK_WHILE); - duk__advance_expect(comp_ctx, DUK_TOK_LPAREN); - - rc_cond = duk__exprtop_toregconst(comp_ctx, res, DUK__BP_FOR_EXPR /*rbp_flags*/); - duk__emit_if_false_skip(comp_ctx, rc_cond); - duk__emit_jump(comp_ctx, pc_start); - /* no need to reset temps, as we're finished emitting code */ - - comp_ctx->curr_func.allow_regexp_in_adv = 1; /* Allow RegExp as part of next stmt. */ - duk__advance_expect(comp_ctx, DUK_TOK_RPAREN); - - duk__patch_jump_here(comp_ctx, pc_label_site + 1); /* break jump */ - - DUK_DDD(DUK_DDDPRINT("end parsing do statement")); -} - -DUK_LOCAL void duk__parse_while_stmt(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_int_t pc_label_site) { - duk_regconst_t temp_reset; - duk_regconst_t rc_cond; - duk_int_t pc_start; - duk_int_t pc_jump_false; - - DUK_DDD(DUK_DDDPRINT("begin parsing while statement")); - - temp_reset = DUK__GETTEMP(comp_ctx); - - duk__advance(comp_ctx); /* eat 'while' */ - - duk__advance_expect(comp_ctx, DUK_TOK_LPAREN); - - pc_start = duk__get_current_pc(comp_ctx); - duk__patch_jump_here(comp_ctx, pc_label_site + 2); /* continue jump */ - - rc_cond = duk__exprtop_toregconst(comp_ctx, res, DUK__BP_FOR_EXPR /*rbp_flags*/); - duk__emit_if_true_skip(comp_ctx, rc_cond); - pc_jump_false = duk__emit_jump_empty(comp_ctx); - DUK__SETTEMP(comp_ctx, temp_reset); - - comp_ctx->curr_func.allow_regexp_in_adv = 1; - duk__advance_expect(comp_ctx, DUK_TOK_RPAREN); /* Allow RegExp as part of next stmt. */ - - duk__parse_stmt(comp_ctx, res, 0 /*allow_source_elem*/); - duk__emit_jump(comp_ctx, pc_start); - - duk__patch_jump_here(comp_ctx, pc_jump_false); - duk__patch_jump_here(comp_ctx, pc_label_site + 1); /* break jump */ - - DUK_DDD(DUK_DDDPRINT("end parsing while statement")); -} - -DUK_LOCAL void duk__parse_break_or_continue_stmt(duk_compiler_ctx *comp_ctx, duk_ivalue *res) { - duk_hthread *thr = comp_ctx->thr; - duk_bool_t is_break = (comp_ctx->curr_token.t == DUK_TOK_BREAK); - duk_int_t label_id; - duk_int_t label_catch_depth; - duk_int_t label_pc; /* points to LABEL; pc+1 = jump site for break; pc+2 = jump site for continue */ - duk_bool_t label_is_closest; - - DUK_UNREF(res); - - duk__advance(comp_ctx); /* eat 'break' or 'continue' */ - - if (comp_ctx->curr_token.t == DUK_TOK_SEMICOLON || /* explicit semi follows */ - comp_ctx->curr_token.lineterm || /* automatic semi will be inserted */ - comp_ctx->curr_token.allow_auto_semi) { /* automatic semi will be inserted */ - /* break/continue without label */ - - duk__lookup_active_label(comp_ctx, - DUK_HTHREAD_STRING_EMPTY_STRING(thr), - is_break, - &label_id, - &label_catch_depth, - &label_pc, - &label_is_closest); - } else if (comp_ctx->curr_token.t == DUK_TOK_IDENTIFIER) { - /* break/continue with label (label cannot be a reserved word, production is 'Identifier' */ - DUK_ASSERT(comp_ctx->curr_token.str1 != NULL); - duk__lookup_active_label(comp_ctx, - comp_ctx->curr_token.str1, - is_break, - &label_id, - &label_catch_depth, - &label_pc, - &label_is_closest); - duk__advance(comp_ctx); - } else { - DUK_ERROR_SYNTAX(thr, DUK_STR_INVALID_BREAK_CONT_LABEL); - DUK_WO_NORETURN(return;); - } - - /* Use a fast break/continue when possible. A fast break/continue is - * just a jump to the LABEL break/continue jump slot, which then jumps - * to an appropriate place (for break, going through ENDLABEL correctly). - * The peephole optimizer will optimize the jump to a direct one. - */ - - if (label_catch_depth == comp_ctx->curr_func.catch_depth && label_is_closest) { - DUK_DDD(DUK_DDDPRINT("break/continue: is_break=%ld, label_id=%ld, label_is_closest=%ld, " - "label_catch_depth=%ld, catch_depth=%ld " - "-> use fast variant (direct jump)", - (long) is_break, - (long) label_id, - (long) label_is_closest, - (long) label_catch_depth, - (long) comp_ctx->curr_func.catch_depth)); - - duk__emit_jump(comp_ctx, label_pc + (is_break ? 1 : 2)); - } else { - DUK_DDD(DUK_DDDPRINT("break/continue: is_break=%ld, label_id=%ld, label_is_closest=%ld, " - "label_catch_depth=%ld, catch_depth=%ld " - "-> use slow variant (longjmp)", - (long) is_break, - (long) label_id, - (long) label_is_closest, - (long) label_catch_depth, - (long) comp_ctx->curr_func.catch_depth)); - - duk__emit_bc(comp_ctx, is_break ? DUK_OP_BREAK : DUK_OP_CONTINUE, (duk_regconst_t) label_id); - } -} - -DUK_LOCAL void duk__parse_return_stmt(duk_compiler_ctx *comp_ctx, duk_ivalue *res) { - duk_hthread *thr = comp_ctx->thr; - duk_regconst_t rc_val; - - duk__advance(comp_ctx); /* eat 'return' */ - - /* A 'return' statement is only allowed inside an actual function body, - * not as part of eval or global code. - */ - if (!comp_ctx->curr_func.is_function) { - DUK_ERROR_SYNTAX(thr, DUK_STR_INVALID_RETURN); - DUK_WO_NORETURN(return;); - } - - if (comp_ctx->curr_token.t == DUK_TOK_SEMICOLON || /* explicit semi follows */ - comp_ctx->curr_token.lineterm || /* automatic semi will be inserted */ - comp_ctx->curr_token.allow_auto_semi) { /* automatic semi will be inserted */ - DUK_DDD(DUK_DDDPRINT("empty return value -> undefined")); - duk__emit_op_only(comp_ctx, DUK_OP_RETUNDEF); - } else { - duk_int_t pc_before_expr; - duk_int_t pc_after_expr; - - DUK_DDD(DUK_DDDPRINT("return with a value")); - - DUK_UNREF(pc_before_expr); - DUK_UNREF(pc_after_expr); - - pc_before_expr = duk__get_current_pc(comp_ctx); - rc_val = duk__exprtop_toregconst(comp_ctx, res, DUK__BP_FOR_EXPR /*rbp_flags*/); - pc_after_expr = duk__get_current_pc(comp_ctx); - - /* Tail call check: if last opcode emitted was CALL, and - * the context allows it, add a tailcall flag to the CALL. - * This doesn't guarantee that a tail call will be allowed at - * runtime, so the RETURN must still be emitted. (Duktape - * 0.10.0 avoided this and simulated a RETURN if a tail call - * couldn't be used at runtime; but this didn't work - * correctly with a thread yield/resume, see - * test-bug-tailcall-thread-yield-resume.js for discussion.) - * - * In addition to the last opcode being CALL, we also need to - * be sure that 'rc_val' is the result register of the CALL. - * For instance, for the expression 'return 0, (function () - * { return 1; }), 2' the last opcode emitted is CALL (no - * bytecode is emitted for '2') but 'rc_val' indicates - * constant '2'. Similarly if '2' is replaced by a register - * bound variable, no opcodes are emitted but tail call would - * be incorrect. - * - * This is tricky and easy to get wrong. It would be best to - * track enough expression metadata to check that 'rc_val' came - * from that last CALL instruction. We don't have that metadata - * now, so we check that 'rc_val' is a temporary register result - * (not a constant or a register bound variable). There should - * be no way currently for 'rc_val' to be a temporary for an - * expression following the CALL instruction without emitting - * some opcodes following the CALL. This proxy check is used - * below. - * - * See: test-bug-comma-expr-gh131.js. - * - * The non-standard 'caller' property disables tail calls - * because they pose some special cases which haven't been - * fixed yet. - */ - -#if defined(DUK_USE_TAILCALL) - if (comp_ctx->curr_func.catch_depth == 0 && /* no catchers */ - pc_after_expr > pc_before_expr) { /* at least one opcode emitted */ - duk_compiler_instr *instr; - duk_instr_t ins; - duk_small_uint_t op; - - instr = duk__get_instr_ptr(comp_ctx, pc_after_expr - 1); - DUK_ASSERT(instr != NULL); - - ins = instr->ins; - op = (duk_small_uint_t) DUK_DEC_OP(ins); - if ((op & ~0x0fU) == DUK_OP_CALL0 && DUK__ISREG_TEMP(comp_ctx, rc_val) /* see above */) { - DUK_DDD(DUK_DDDPRINT("return statement detected a tail call opportunity: " - "catch depth is 0, duk__exprtop() emitted >= 1 instructions, " - "and last instruction is a CALL " - "-> change to TAILCALL")); - ins |= DUK_ENC_OP(DUK_BC_CALL_FLAG_TAILCALL); - instr->ins = ins; - } - } -#endif /* DUK_USE_TAILCALL */ - - if (DUK__ISREG(rc_val)) { - duk__emit_bc(comp_ctx, DUK_OP_RETREG, rc_val); - } else { - rc_val = DUK__REMOVECONST(rc_val); - if (duk__const_needs_refcount(comp_ctx, rc_val)) { - duk__emit_bc(comp_ctx, DUK_OP_RETCONST, rc_val); - } else { - duk__emit_bc(comp_ctx, DUK_OP_RETCONSTN, rc_val); - } - } - } -} - -DUK_LOCAL void duk__parse_throw_stmt(duk_compiler_ctx *comp_ctx, duk_ivalue *res) { - duk_regconst_t reg_val; - - duk__advance(comp_ctx); /* eat 'throw' */ - - /* Unlike break/continue, throw statement does not allow an empty value. */ - - if (comp_ctx->curr_token.lineterm) { - DUK_ERROR_SYNTAX(comp_ctx->thr, DUK_STR_INVALID_THROW); - DUK_WO_NORETURN(return;); - } - - reg_val = duk__exprtop_toreg(comp_ctx, res, DUK__BP_FOR_EXPR /*rbp_flags*/); - duk__emit_bc(comp_ctx, DUK_OP_THROW, reg_val); -} - -DUK_LOCAL void duk__parse_try_stmt(duk_compiler_ctx *comp_ctx, duk_ivalue *res) { - duk_hthread *thr = comp_ctx->thr; - duk_regconst_t reg_catch; /* reg_catch+0 and reg_catch+1 are reserved for TRYCATCH */ - duk_regconst_t rc_varname = 0; - duk_small_uint_t trycatch_flags = 0; - duk_int_t pc_ldconst = -1; - duk_int_t pc_trycatch = -1; - duk_int_t pc_catch = -1; - duk_int_t pc_finally = -1; - - DUK_UNREF(res); - - /* - * See the following documentation for discussion: - * - * doc/execution.rst: control flow details - * - * Try, catch, and finally "parts" are Blocks, not Statements, so - * they must always be delimited by curly braces. This is unlike e.g. - * the if statement, which accepts any Statement. This eliminates any - * questions of matching parts of nested try statements. The Block - * parsing is implemented inline here (instead of calling out). - * - * Finally part has a 'let scoped' variable, which requires a few kinks - * here. - */ - - comp_ctx->curr_func.catch_depth++; - - duk__advance(comp_ctx); /* eat 'try' */ - - reg_catch = DUK__ALLOCTEMPS(comp_ctx, 2); - - /* The target for this LDCONST may need output shuffling, but we assume - * that 'pc_ldconst' will be the LDCONST that we can patch later. This - * should be the case because there's no input shuffling. (If there's - * no catch clause, this LDCONST will be replaced with a NOP.) - */ - pc_ldconst = duk__get_current_pc(comp_ctx); - duk__emit_a_bc(comp_ctx, DUK_OP_LDCONST, reg_catch, 0 /*patched later*/); - - pc_trycatch = duk__get_current_pc(comp_ctx); - duk__emit_invalid(comp_ctx); /* TRYCATCH, cannot emit now (not enough info) */ - duk__emit_invalid(comp_ctx); /* jump for 'catch' case */ - duk__emit_invalid(comp_ctx); /* jump for 'finally' case or end (if no finally) */ - - /* try part */ - duk__advance_expect(comp_ctx, DUK_TOK_LCURLY); - duk__parse_stmts(comp_ctx, 0 /*allow_source_elem*/, 0 /*expect_eof*/, 1 /*regexp_after*/); - /* the DUK_TOK_RCURLY is eaten by duk__parse_stmts() */ - duk__emit_op_only(comp_ctx, DUK_OP_ENDTRY); - - if (comp_ctx->curr_token.t == DUK_TOK_CATCH) { - /* - * The catch variable must be updated to reflect the new allocated - * register for the duration of the catch clause. We need to store - * and restore the original value for the varmap entry (if any). - */ - - /* - * Note: currently register bindings must be fixed for the entire - * function. So, even though the catch variable is in a register - * we know, we must use an explicit environment record and slow path - * accesses to read/write the catch binding to make closures created - * within the catch clause work correctly. This restriction should - * be fixable (at least in common cases) later. - * - * See: test-bug-catch-binding-2.js. - * - * XXX: improve to get fast path access to most catch clauses. - */ - - duk_hstring *h_var; - duk_int_t varmap_value; /* for storing/restoring the varmap binding for catch variable */ - - DUK_DDD(DUK_DDDPRINT("stack top at start of catch clause: %ld", (long) duk_get_top(thr))); - - trycatch_flags |= DUK_BC_TRYCATCH_FLAG_HAVE_CATCH; - - pc_catch = duk__get_current_pc(comp_ctx); - - duk__advance(comp_ctx); - duk__advance_expect(comp_ctx, DUK_TOK_LPAREN); - - if (comp_ctx->curr_token.t != DUK_TOK_IDENTIFIER) { - /* Identifier, i.e. don't allow reserved words */ - goto syntax_error; - } - h_var = comp_ctx->curr_token.str1; - DUK_ASSERT(h_var != NULL); - - duk_push_hstring(thr, h_var); /* keep in on valstack, use borrowed ref below */ - - if (comp_ctx->curr_func.is_strict && - ((h_var == DUK_HTHREAD_STRING_EVAL(thr)) || (h_var == DUK_HTHREAD_STRING_LC_ARGUMENTS(thr)))) { - DUK_DDD(DUK_DDDPRINT("catch identifier 'eval' or 'arguments' in strict mode -> SyntaxError")); - goto syntax_error; - } - - duk_dup_top(thr); - rc_varname = duk__getconst(comp_ctx); - DUK_DDD(DUK_DDDPRINT("catch clause, rc_varname=0x%08lx (%ld)", (unsigned long) rc_varname, (long) rc_varname)); - - duk__advance(comp_ctx); - duk__advance_expect(comp_ctx, DUK_TOK_RPAREN); - - duk__advance_expect(comp_ctx, DUK_TOK_LCURLY); - - DUK_DDD(DUK_DDDPRINT("varmap before modifying for catch clause: %!iT", - (duk_tval *) duk_get_tval(thr, comp_ctx->curr_func.varmap_idx))); - - duk_dup_top(thr); - duk_get_prop(thr, comp_ctx->curr_func.varmap_idx); - if (duk_is_undefined(thr, -1)) { - varmap_value = -2; - } else if (duk_is_null(thr, -1)) { - varmap_value = -1; - } else { - DUK_ASSERT(duk_is_number(thr, -1)); - varmap_value = duk_get_int(thr, -1); - DUK_ASSERT(varmap_value >= 0); - } - duk_pop(thr); - -#if 0 - /* It'd be nice to do something like this - but it doesn't - * work for closures created inside the catch clause. - */ - duk_dup_top(thr); - duk_push_int(thr, (duk_int_t) (reg_catch + 0)); - duk_put_prop(thr, comp_ctx->curr_func.varmap_idx); -#endif - duk_dup_top(thr); - duk_push_null(thr); - duk_put_prop(thr, comp_ctx->curr_func.varmap_idx); - - duk__emit_a_bc(comp_ctx, - DUK_OP_PUTVAR | DUK__EMIT_FLAG_A_IS_SOURCE, - reg_catch + 0 /*value*/, - rc_varname /*varname*/); - - DUK_DDD(DUK_DDDPRINT("varmap before parsing catch clause: %!iT", - (duk_tval *) duk_get_tval(thr, comp_ctx->curr_func.varmap_idx))); - - duk__parse_stmts(comp_ctx, 0 /*allow_source_elem*/, 0 /*expect_eof*/, 1 /*regexp_after*/); - /* the DUK_TOK_RCURLY is eaten by duk__parse_stmts() */ - - if (varmap_value == -2) { - /* not present */ - duk_del_prop(thr, comp_ctx->curr_func.varmap_idx); - } else { - if (varmap_value == -1) { - duk_push_null(thr); - } else { - DUK_ASSERT(varmap_value >= 0); - duk_push_int(thr, varmap_value); - } - duk_put_prop(thr, comp_ctx->curr_func.varmap_idx); - } - /* varname is popped by above code */ - - DUK_DDD(DUK_DDDPRINT("varmap after restore catch clause: %!iT", - (duk_tval *) duk_get_tval(thr, comp_ctx->curr_func.varmap_idx))); - - duk__emit_op_only(comp_ctx, DUK_OP_ENDCATCH); - - /* - * XXX: for now, indicate that an expensive catch binding - * declarative environment is always needed. If we don't - * need it, we don't need the const_varname either. - */ - - trycatch_flags |= DUK_BC_TRYCATCH_FLAG_CATCH_BINDING; - - DUK_DDD(DUK_DDDPRINT("stack top at end of catch clause: %ld", (long) duk_get_top(thr))); - } - - if (comp_ctx->curr_token.t == DUK_TOK_FINALLY) { - trycatch_flags |= DUK_BC_TRYCATCH_FLAG_HAVE_FINALLY; - - pc_finally = duk__get_current_pc(comp_ctx); - - duk__advance(comp_ctx); - - duk__advance_expect(comp_ctx, DUK_TOK_LCURLY); - duk__parse_stmts(comp_ctx, 0 /*allow_source_elem*/, 0 /*expect_eof*/, 1 /*regexp_after*/); - /* the DUK_TOK_RCURLY is eaten by duk__parse_stmts() */ - duk__emit_abc(comp_ctx, DUK_OP_ENDFIN, reg_catch); /* rethrow */ - } - - if (!(trycatch_flags & DUK_BC_TRYCATCH_FLAG_HAVE_CATCH) && !(trycatch_flags & DUK_BC_TRYCATCH_FLAG_HAVE_FINALLY)) { - /* must have catch and/or finally */ - goto syntax_error; - } - - /* If there's no catch block, rc_varname will be 0 and duk__patch_trycatch() - * will replace the LDCONST with a NOP. For any actual constant (including - * constant 0) the DUK__CONST_MARKER flag will be set in rc_varname. - */ - - duk__patch_trycatch(comp_ctx, pc_ldconst, pc_trycatch, reg_catch, rc_varname, trycatch_flags); - - if (trycatch_flags & DUK_BC_TRYCATCH_FLAG_HAVE_CATCH) { - DUK_ASSERT(pc_catch >= 0); - duk__patch_jump(comp_ctx, pc_trycatch + 1, pc_catch); - } - - if (trycatch_flags & DUK_BC_TRYCATCH_FLAG_HAVE_FINALLY) { - DUK_ASSERT(pc_finally >= 0); - duk__patch_jump(comp_ctx, pc_trycatch + 2, pc_finally); - } else { - /* without finally, the second jump slot is used to jump to end of stmt */ - duk__patch_jump_here(comp_ctx, pc_trycatch + 2); - } - - comp_ctx->curr_func.catch_depth--; - return; - -syntax_error: - DUK_ERROR_SYNTAX(thr, DUK_STR_INVALID_TRY); - DUK_WO_NORETURN(return;); -} - -DUK_LOCAL void duk__parse_with_stmt(duk_compiler_ctx *comp_ctx, duk_ivalue *res) { - duk_int_t pc_trycatch; - duk_int_t pc_finished; - duk_regconst_t reg_catch; - duk_small_uint_t trycatch_flags; - - if (comp_ctx->curr_func.is_strict) { - DUK_ERROR_SYNTAX(comp_ctx->thr, DUK_STR_WITH_IN_STRICT_MODE); - DUK_WO_NORETURN(return;); - } - - comp_ctx->curr_func.catch_depth++; - - duk__advance(comp_ctx); /* eat 'with' */ - - reg_catch = DUK__ALLOCTEMPS(comp_ctx, 2); - - duk__advance_expect(comp_ctx, DUK_TOK_LPAREN); - duk__exprtop_toforcedreg(comp_ctx, res, DUK__BP_FOR_EXPR /*rbp_flags*/, reg_catch); - comp_ctx->curr_func.allow_regexp_in_adv = 1; - duk__advance_expect(comp_ctx, DUK_TOK_RPAREN); /* Allow RegExp as part of next stmt. */ - - pc_trycatch = duk__get_current_pc(comp_ctx); - trycatch_flags = DUK_BC_TRYCATCH_FLAG_WITH_BINDING; - duk__emit_a_bc(comp_ctx, - DUK_OP_TRYCATCH | DUK__EMIT_FLAG_NO_SHUFFLE_A, - (duk_regconst_t) trycatch_flags /*a*/, - reg_catch /*bc*/); - duk__emit_invalid(comp_ctx); /* catch jump */ - duk__emit_invalid(comp_ctx); /* finished jump */ - - duk__parse_stmt(comp_ctx, res, 0 /*allow_source_elem*/); - duk__emit_op_only(comp_ctx, DUK_OP_ENDTRY); - - pc_finished = duk__get_current_pc(comp_ctx); - - duk__patch_jump(comp_ctx, pc_trycatch + 2, pc_finished); - - comp_ctx->curr_func.catch_depth--; -} - -DUK_LOCAL duk_int_t duk__stmt_label_site(duk_compiler_ctx *comp_ctx, duk_int_t label_id) { - /* if a site already exists, nop: max one label site per statement */ - if (label_id >= 0) { - return label_id; - } - - label_id = comp_ctx->curr_func.label_next++; - DUK_DDD(DUK_DDDPRINT("allocated new label id for label site: %ld", (long) label_id)); - - duk__emit_bc(comp_ctx, DUK_OP_LABEL, (duk_regconst_t) label_id); - duk__emit_invalid(comp_ctx); - duk__emit_invalid(comp_ctx); - - return label_id; -} - -/* Parse a single statement. - * - * Creates a label site (with an empty label) automatically for iteration - * statements. Also "peels off" any label statements for explicit labels. - */ -DUK_LOCAL void duk__parse_stmt(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_bool_t allow_source_elem) { - duk_hthread *thr = comp_ctx->thr; - duk_bool_t dir_prol_at_entry; /* directive prologue status at entry */ - duk_regconst_t temp_at_entry; - duk_size_t labels_len_at_entry; - duk_int_t pc_at_entry; /* assumed to also be PC of "LABEL" */ - duk_int_t stmt_id; - duk_small_uint_t stmt_flags = 0; - duk_int_t label_id = -1; - duk_small_uint_t tok; - duk_bool_t test_func_decl; - - DUK__RECURSION_INCREASE(comp_ctx, thr); - - temp_at_entry = DUK__GETTEMP(comp_ctx); - pc_at_entry = duk__get_current_pc(comp_ctx); - labels_len_at_entry = duk_get_length(thr, comp_ctx->curr_func.labelnames_idx); - stmt_id = comp_ctx->curr_func.stmt_next++; - dir_prol_at_entry = comp_ctx->curr_func.in_directive_prologue; - - DUK_UNREF(stmt_id); - - DUK_DDD(DUK_DDDPRINT("parsing a statement, stmt_id=%ld, temp_at_entry=%ld, labels_len_at_entry=%ld, " - "is_strict=%ld, in_directive_prologue=%ld, catch_depth=%ld", - (long) stmt_id, - (long) temp_at_entry, - (long) labels_len_at_entry, - (long) comp_ctx->curr_func.is_strict, - (long) comp_ctx->curr_func.in_directive_prologue, - (long) comp_ctx->curr_func.catch_depth)); - - /* The directive prologue flag is cleared by default so that it is - * unset for any recursive statement parsing. It is only "revived" - * if a directive is detected. (We could also make directives only - * allowed if 'allow_source_elem' was true.) - */ - comp_ctx->curr_func.in_directive_prologue = 0; - -retry_parse: - - DUK_DDD(DUK_DDDPRINT("try stmt parse, stmt_id=%ld, label_id=%ld, allow_source_elem=%ld, catch_depth=%ld", - (long) stmt_id, - (long) label_id, - (long) allow_source_elem, - (long) comp_ctx->curr_func.catch_depth)); - - /* - * Detect iteration statements; if encountered, establish an - * empty label. - */ - - tok = comp_ctx->curr_token.t; - if (tok == DUK_TOK_FOR || tok == DUK_TOK_DO || tok == DUK_TOK_WHILE || tok == DUK_TOK_SWITCH) { - DUK_DDD(DUK_DDDPRINT("iteration/switch statement -> add empty label")); - - label_id = duk__stmt_label_site(comp_ctx, label_id); - duk__add_label(comp_ctx, DUK_HTHREAD_STRING_EMPTY_STRING(thr), pc_at_entry /*pc_label*/, label_id); - } - - /* - * Main switch for statement / source element type. - */ - - switch (comp_ctx->curr_token.t) { - case DUK_TOK_FUNCTION: { - /* - * Function declaration, function expression, or (non-standard) - * function statement. - * - * The E5 specification only allows function declarations at - * the top level (in "source elements"). An ExpressionStatement - * is explicitly not allowed to begin with a "function" keyword - * (E5 Section 12.4). Hence any non-error semantics for such - * non-top-level statements are non-standard. Duktape semantics - * for function statements are modelled after V8, see - * test-dev-func-decl-outside-top.js. - */ - test_func_decl = allow_source_elem; -#if defined(DUK_USE_NONSTD_FUNC_STMT) - /* Lenient: allow function declarations outside top level in both - * strict and non-strict modes. However, don't allow labelled - * function declarations in strict mode. - */ - test_func_decl = test_func_decl || !comp_ctx->curr_func.is_strict || label_id < 0; -#endif /* DUK_USE_NONSTD_FUNC_STMT */ - /* Strict: never allow function declarations outside top level. */ - if (test_func_decl) { - /* FunctionDeclaration: not strictly a statement but handled as such. - * - * O(depth^2) parse count for inner functions is handled by recording a - * lexer offset on the first compilation pass, so that the function can - * be efficiently skipped on the second pass. This is encapsulated into - * duk__parse_func_like_fnum(). - */ - - duk_int_t fnum; -#if defined(DUK_USE_ASSERTIONS) - duk_idx_t top_before; -#endif - - DUK_DDD(DUK_DDDPRINT("function declaration statement")); - -#if defined(DUK_USE_ASSERTIONS) - top_before = duk_get_top(thr); -#endif - - duk__advance(comp_ctx); /* eat 'function' */ - fnum = duk__parse_func_like_fnum(comp_ctx, DUK__FUNC_FLAG_DECL | DUK__FUNC_FLAG_PUSHNAME_PASS1); - - /* The value stack convention here is a bit odd: the function - * name is only pushed on pass 1 (in_scanning), and is needed - * to process function declarations. - */ - if (comp_ctx->curr_func.in_scanning) { - duk_uarridx_t n; - -#if defined(DUK_USE_ASSERTIONS) - DUK_ASSERT(duk_get_top(thr) == top_before + 1); -#endif - DUK_DDD(DUK_DDDPRINT("register function declaration %!T in pass 1, fnum %ld", - duk_get_tval(thr, -1), - (long) fnum)); - n = (duk_uarridx_t) duk_get_length(thr, comp_ctx->curr_func.decls_idx); - /* funcname is at index -1 */ - duk_put_prop_index(thr, comp_ctx->curr_func.decls_idx, n); - duk_push_int(thr, (duk_int_t) (DUK_DECL_TYPE_FUNC + (fnum << 8))); - duk_put_prop_index(thr, comp_ctx->curr_func.decls_idx, n + 1); - } else { -#if defined(DUK_USE_ASSERTIONS) - DUK_ASSERT(duk_get_top(thr) == top_before); -#endif - } - - /* no statement value (unlike function expression) */ - stmt_flags = 0; - break; - } else { - DUK_ERROR_SYNTAX(thr, DUK_STR_FUNC_STMT_NOT_ALLOWED); - DUK_WO_NORETURN(return;); - } - break; - } - case DUK_TOK_LCURLY: { - DUK_DDD(DUK_DDDPRINT("block statement")); - duk__advance(comp_ctx); - duk__parse_stmts(comp_ctx, 0 /*allow_source_elem*/, 0 /*expect_eof*/, 1 /*regexp_after*/); - /* the DUK_TOK_RCURLY is eaten by duk__parse_stmts() */ - if (label_id >= 0) { - duk__patch_jump_here(comp_ctx, pc_at_entry + 1); /* break jump */ - } - stmt_flags = 0; - break; - } - case DUK_TOK_CONST: { - DUK_DDD(DUK_DDDPRINT("constant declaration statement")); - duk__parse_var_stmt(comp_ctx, res, DUK__EXPR_FLAG_REQUIRE_INIT /*expr_flags*/); - stmt_flags = DUK__HAS_TERM; - break; - } - case DUK_TOK_VAR: { - DUK_DDD(DUK_DDDPRINT("variable declaration statement")); - duk__parse_var_stmt(comp_ctx, res, 0 /*expr_flags*/); - stmt_flags = DUK__HAS_TERM; - break; - } - case DUK_TOK_SEMICOLON: { - /* empty statement with an explicit semicolon */ - DUK_DDD(DUK_DDDPRINT("empty statement")); - stmt_flags = DUK__HAS_TERM; - break; - } - case DUK_TOK_IF: { - DUK_DDD(DUK_DDDPRINT("if statement")); - duk__parse_if_stmt(comp_ctx, res); - if (label_id >= 0) { - duk__patch_jump_here(comp_ctx, pc_at_entry + 1); /* break jump */ - } - stmt_flags = 0; - break; - } - case DUK_TOK_DO: { - /* - * Do-while statement is mostly trivial, but there is special - * handling for automatic semicolon handling (triggered by the - * DUK__ALLOW_AUTO_SEMI_ALWAYS) flag related to a bug filed at: - * - * https://bugs.ecmascript.org/show_bug.cgi?id=8 - * - * See doc/compiler.rst for details. - */ - DUK_DDD(DUK_DDDPRINT("do statement")); - DUK_ASSERT(label_id >= 0); - duk__update_label_flags(comp_ctx, label_id, DUK_LABEL_FLAG_ALLOW_BREAK | DUK_LABEL_FLAG_ALLOW_CONTINUE); - duk__parse_do_stmt(comp_ctx, res, pc_at_entry); - stmt_flags = DUK__HAS_TERM | DUK__ALLOW_AUTO_SEMI_ALWAYS; /* DUK__ALLOW_AUTO_SEMI_ALWAYS workaround */ - break; - } - case DUK_TOK_WHILE: { - DUK_DDD(DUK_DDDPRINT("while statement")); - DUK_ASSERT(label_id >= 0); - duk__update_label_flags(comp_ctx, label_id, DUK_LABEL_FLAG_ALLOW_BREAK | DUK_LABEL_FLAG_ALLOW_CONTINUE); - duk__parse_while_stmt(comp_ctx, res, pc_at_entry); - stmt_flags = 0; - break; - } - case DUK_TOK_FOR: { - /* - * For/for-in statement is complicated to parse because - * determining the statement type (three-part for vs. a - * for-in) requires potential backtracking. - * - * See the helper for the messy stuff. - */ - DUK_DDD(DUK_DDDPRINT("for/for-in statement")); - DUK_ASSERT(label_id >= 0); - duk__update_label_flags(comp_ctx, label_id, DUK_LABEL_FLAG_ALLOW_BREAK | DUK_LABEL_FLAG_ALLOW_CONTINUE); - duk__parse_for_stmt(comp_ctx, res, pc_at_entry); - stmt_flags = 0; - break; - } - case DUK_TOK_CONTINUE: - case DUK_TOK_BREAK: { - DUK_DDD(DUK_DDDPRINT("break/continue statement")); - duk__parse_break_or_continue_stmt(comp_ctx, res); - stmt_flags = DUK__HAS_TERM | DUK__IS_TERMINAL; - break; - } - case DUK_TOK_RETURN: { - DUK_DDD(DUK_DDDPRINT("return statement")); - duk__parse_return_stmt(comp_ctx, res); - stmt_flags = DUK__HAS_TERM | DUK__IS_TERMINAL; - break; - } - case DUK_TOK_WITH: { - DUK_DDD(DUK_DDDPRINT("with statement")); - comp_ctx->curr_func.with_depth++; - duk__parse_with_stmt(comp_ctx, res); - if (label_id >= 0) { - duk__patch_jump_here(comp_ctx, pc_at_entry + 1); /* break jump */ - } - comp_ctx->curr_func.with_depth--; - stmt_flags = 0; - break; - } - case DUK_TOK_SWITCH: { - /* - * The switch statement is pretty messy to compile. - * See the helper for details. - */ - DUK_DDD(DUK_DDDPRINT("switch statement")); - DUK_ASSERT(label_id >= 0); - duk__update_label_flags(comp_ctx, label_id, DUK_LABEL_FLAG_ALLOW_BREAK); /* don't allow continue */ - duk__parse_switch_stmt(comp_ctx, res, pc_at_entry); - stmt_flags = 0; - break; - } - case DUK_TOK_THROW: { - DUK_DDD(DUK_DDDPRINT("throw statement")); - duk__parse_throw_stmt(comp_ctx, res); - stmt_flags = DUK__HAS_TERM | DUK__IS_TERMINAL; - break; - } - case DUK_TOK_TRY: { - DUK_DDD(DUK_DDDPRINT("try statement")); - duk__parse_try_stmt(comp_ctx, res); - stmt_flags = 0; - break; - } - case DUK_TOK_DEBUGGER: { - duk__advance(comp_ctx); -#if defined(DUK_USE_DEBUGGER_SUPPORT) - DUK_DDD(DUK_DDDPRINT("debugger statement: debugging enabled, emit debugger opcode")); - duk__emit_op_only(comp_ctx, DUK_OP_DEBUGGER); -#else - DUK_DDD(DUK_DDDPRINT("debugger statement: ignored")); -#endif - stmt_flags = DUK__HAS_TERM; - break; - } - default: { - /* - * Else, must be one of: - * - ExpressionStatement, possibly a directive (String) - * - LabelledStatement (Identifier followed by ':') - * - * Expressions beginning with 'function' keyword are covered by a case - * above (such expressions are not allowed in standard E5 anyway). - * Also expressions starting with '{' are interpreted as block - * statements. See E5 Section 12.4. - * - * Directive detection is tricky; see E5 Section 14.1 on directive - * prologue. A directive is an expression statement with a single - * string literal and an explicit or automatic semicolon. Escape - * characters are significant and no parens etc are allowed: - * - * 'use strict'; // valid 'use strict' directive - * 'use\u0020strict'; // valid directive, not a 'use strict' directive - * ('use strict'); // not a valid directive - * - * The expression is determined to consist of a single string literal - * based on duk__expr_nud() and duk__expr_led() call counts. The string literal - * of a 'use strict' directive is determined to lack any escapes based - * num_escapes count from the lexer. Note that other directives may be - * allowed to contain escapes, so a directive with escapes does not - * terminate a directive prologue. - * - * We rely on the fact that the expression parser will not emit any - * code for a single token expression. However, it will generate an - * intermediate value which we will then successfully ignore. - * - * A similar approach is used for labels. - */ - - duk_bool_t single_token; - - DUK_DDD(DUK_DDDPRINT("expression statement")); - duk__exprtop(comp_ctx, res, DUK__BP_FOR_EXPR /*rbp_flags*/); - - single_token = (comp_ctx->curr_func.nud_count == 1 && /* one token */ - comp_ctx->curr_func.led_count == 0); /* no operators */ - - if (single_token && comp_ctx->prev_token.t == DUK_TOK_IDENTIFIER && comp_ctx->curr_token.t == DUK_TOK_COLON) { - /* - * Detected label - */ - - duk_hstring *h_lab; - - /* expected ival */ - DUK_ASSERT(res->t == DUK_IVAL_VAR); - DUK_ASSERT(res->x1.t == DUK_ISPEC_VALUE); - DUK_ASSERT(DUK_TVAL_IS_STRING(duk_get_tval(thr, res->x1.valstack_idx))); - h_lab = comp_ctx->prev_token.str1; - DUK_ASSERT(h_lab != NULL); - - DUK_DDD(DUK_DDDPRINT("explicit label site for label '%!O'", (duk_heaphdr *) h_lab)); - - duk__advance(comp_ctx); /* eat colon */ - - label_id = duk__stmt_label_site(comp_ctx, label_id); - - duk__add_label(comp_ctx, h_lab, pc_at_entry /*pc_label*/, label_id); - - /* a statement following a label cannot be a source element - * (a function declaration). - */ - allow_source_elem = 0; - - DUK_DDD(DUK_DDDPRINT("label handled, retry statement parsing")); - goto retry_parse; - } - - stmt_flags = 0; - - if (dir_prol_at_entry && /* still in prologue */ - single_token && /* single string token */ - comp_ctx->prev_token.t == DUK_TOK_STRING) { - /* - * Detected a directive - */ - duk_hstring *h_dir; - - /* expected ival */ - DUK_ASSERT(res->t == DUK_IVAL_PLAIN); - DUK_ASSERT(res->x1.t == DUK_ISPEC_VALUE); - DUK_ASSERT(DUK_TVAL_IS_STRING(duk_get_tval(thr, res->x1.valstack_idx))); - h_dir = comp_ctx->prev_token.str1; - DUK_ASSERT(h_dir != NULL); - - DUK_DDD(DUK_DDDPRINT("potential directive: %!O", h_dir)); - - stmt_flags |= DUK__STILL_PROLOGUE; - - /* Note: escaped characters differentiate directives */ - - if (comp_ctx->prev_token.num_escapes > 0) { - DUK_DDD(DUK_DDDPRINT("directive contains escapes: valid directive " - "but we ignore such directives")); - } else { - /* - * The length comparisons are present to handle - * strings like "use strict\u0000foo" as required. - */ - - if (DUK_HSTRING_GET_BYTELEN(h_dir) == 10 && - DUK_STRCMP((const char *) DUK_HSTRING_GET_DATA(h_dir), "use strict") == 0) { -#if defined(DUK_USE_STRICT_DECL) - DUK_DDD(DUK_DDDPRINT("use strict directive detected: strict flag %ld -> %ld", - (long) comp_ctx->curr_func.is_strict, - (long) 1)); - comp_ctx->curr_func.is_strict = 1; -#else - DUK_DDD(DUK_DDDPRINT("use strict detected but strict declarations disabled, ignoring")); -#endif - } else if (DUK_HSTRING_GET_BYTELEN(h_dir) == 14 && - DUK_STRCMP((const char *) DUK_HSTRING_GET_DATA(h_dir), "use duk notail") == 0) { - DUK_DDD(DUK_DDDPRINT("use duk notail directive detected: notail flag %ld -> %ld", - (long) comp_ctx->curr_func.is_notail, - (long) 1)); - comp_ctx->curr_func.is_notail = 1; - } else { - DUK_DD(DUK_DDPRINT("unknown directive: '%!O', ignoring but not terminating " - "directive prologue", - (duk_hobject *) h_dir)); - } - } - } else { - DUK_DDD(DUK_DDDPRINT("non-directive expression statement or no longer in prologue; " - "prologue terminated if still active")); - } - - stmt_flags |= DUK__HAS_VAL | DUK__HAS_TERM; - } - } /* end switch (tok) */ - - /* - * Statement value handling. - * - * Global code and eval code has an implicit return value - * which comes from the last statement with a value - * (technically a non-"empty" continuation, which is - * different from an empty statement). - * - * Since we don't know whether a later statement will - * override the value of the current statement, we need - * to coerce the statement value to a register allocated - * for implicit return values. In other cases we need - * to coerce the statement value to a plain value to get - * any side effects out (consider e.g. "foo.bar;"). - */ - - /* XXX: what about statements which leave a half-cooked value in 'res' - * but have no stmt value? Any such statements? - */ - - if (stmt_flags & DUK__HAS_VAL) { - duk_regconst_t reg_stmt_value = comp_ctx->curr_func.reg_stmt_value; - if (reg_stmt_value >= 0) { - duk__ivalue_toforcedreg(comp_ctx, res, reg_stmt_value); - } else { - duk__ivalue_toplain_ignore(comp_ctx, res); - } - } else { - ; - } - - /* - * Statement terminator check, including automatic semicolon - * handling. After this step, 'curr_tok' should be the first - * token after a possible statement terminator. - */ - - if (stmt_flags & DUK__HAS_TERM) { - if (comp_ctx->curr_token.t == DUK_TOK_SEMICOLON) { - DUK_DDD(DUK_DDDPRINT("explicit semicolon terminates statement")); - duk__advance(comp_ctx); - } else { - if (comp_ctx->curr_token.allow_auto_semi) { - DUK_DDD(DUK_DDDPRINT("automatic semicolon terminates statement")); - } else if (stmt_flags & DUK__ALLOW_AUTO_SEMI_ALWAYS) { - /* XXX: make this lenience dependent on flags or strictness? */ - DUK_DDD(DUK_DDDPRINT("automatic semicolon terminates statement (allowed for compatibility " - "even though no lineterm present before next token)")); - } else { - DUK_ERROR_SYNTAX(thr, DUK_STR_UNTERMINATED_STMT); - DUK_WO_NORETURN(return;); - } - } - } else { - DUK_DDD(DUK_DDDPRINT("statement has no terminator")); - } - - /* - * Directive prologue tracking. - */ - - if (stmt_flags & DUK__STILL_PROLOGUE) { - DUK_DDD(DUK_DDDPRINT("setting in_directive_prologue")); - comp_ctx->curr_func.in_directive_prologue = 1; - } - - /* - * Cleanups (all statement parsing flows through here). - * - * Pop label site and reset labels. Reset 'next temp' to value at - * entry to reuse temps. - */ - - if (label_id >= 0) { - duk__emit_bc(comp_ctx, DUK_OP_ENDLABEL, (duk_regconst_t) label_id); - } - - DUK__SETTEMP(comp_ctx, temp_at_entry); - - duk__reset_labels_to_length(comp_ctx, labels_len_at_entry); - - /* XXX: return indication of "terminalness" (e.g. a 'throw' is terminal) */ - - DUK__RECURSION_DECREASE(comp_ctx, thr); -} - -/* - * Parse a statement list. - * - * Handles automatic semicolon insertion and implicit return value. - * - * Upon entry, 'curr_tok' should contain the first token of the first - * statement (parsed in the "allow regexp literal" mode). Upon exit, - * 'curr_tok' contains the token following the statement list terminator - * (EOF or closing brace). - */ - -DUK_LOCAL void duk__parse_stmts(duk_compiler_ctx *comp_ctx, - duk_bool_t allow_source_elem, - duk_bool_t expect_eof, - duk_bool_t regexp_after) { - duk_hthread *thr = comp_ctx->thr; - duk_ivalue res_alloc; - duk_ivalue *res = &res_alloc; - - /* Setup state. Initial ivalue is 'undefined'. */ - - duk_require_stack(thr, DUK__PARSE_STATEMENTS_SLOTS); - - /* XXX: 'res' setup can be moved to function body level; in fact, two 'res' - * intermediate values suffice for parsing of each function. Nesting is needed - * for nested functions (which may occur inside expressions). - */ - - duk_memzero(&res_alloc, sizeof(res_alloc)); - res->t = DUK_IVAL_PLAIN; - res->x1.t = DUK_ISPEC_VALUE; - res->x1.valstack_idx = duk_get_top(thr); - res->x2.valstack_idx = res->x1.valstack_idx + 1; - duk_push_undefined(thr); - duk_push_undefined(thr); - - /* Parse statements until a closing token (EOF or '}') is found. */ - - for (;;) { - /* Check whether statement list ends. */ - - if (expect_eof) { - if (comp_ctx->curr_token.t == DUK_TOK_EOF) { - break; - } - } else { - if (comp_ctx->curr_token.t == DUK_TOK_RCURLY) { - break; - } - } - - /* Check statement type based on the first token type. - * - * Note: expression parsing helpers expect 'curr_tok' to - * contain the first token of the expression upon entry. - */ - - DUK_DDD(DUK_DDDPRINT("TOKEN %ld (non-whitespace, non-comment)", (long) comp_ctx->curr_token.t)); - - duk__parse_stmt(comp_ctx, res, allow_source_elem); - } - - /* RegExp is allowed / not allowed depending on context. For function - * declarations RegExp is allowed because it follows a function - * declaration statement and may appear as part of the next statement. - * For function expressions RegExp is not allowed, and it's possible - * to do something like '(function () {} / 123)'. - */ - if (regexp_after) { - comp_ctx->curr_func.allow_regexp_in_adv = 1; - } - duk__advance(comp_ctx); - - /* Tear down state. */ - - duk_pop_2(thr); -} - -/* - * Declaration binding instantiation conceptually happens when calling a - * function; for us it essentially means that function prologue. The - * conceptual process is described in E5 Section 10.5. - * - * We need to keep track of all encountered identifiers to (1) create an - * identifier-to-register map ("varmap"); and (2) detect duplicate - * declarations. Identifiers which are not bound to registers still need - * to be tracked for detecting duplicates. Currently such identifiers - * are put into the varmap with a 'null' value, which is later cleaned up. - * - * To support functions with a large number of variable and function - * declarations, registers are not allocated beyond a certain limit; - * after that limit, variables and functions need slow path access. - * Arguments are currently always register bound, which imposes a hard - * (and relatively small) argument count limit. - * - * Some bindings in E5 are not configurable (= deletable) and almost all - * are mutable (writable). Exceptions are: - * - * - The 'arguments' binding, established only if no shadowing argument - * or function declaration exists. We handle 'arguments' creation - * and binding through an explicit slow path environment record. - * - * - The "name" binding for a named function expression. This is also - * handled through an explicit slow path environment record. - */ - -/* XXX: add support for variables to not be register bound always, to - * handle cases with a very large number of variables? - */ - -DUK_LOCAL void duk__init_varmap_and_prologue_for_pass2(duk_compiler_ctx *comp_ctx, duk_regconst_t *out_stmt_value_reg) { - duk_hthread *thr = comp_ctx->thr; - duk_hstring *h_name; - duk_bool_t configurable_bindings; - duk_uarridx_t num_args; - duk_uarridx_t num_decls; - duk_regconst_t rc_name; - duk_small_uint_t declvar_flags; - duk_uarridx_t i; -#if defined(DUK_USE_ASSERTIONS) - duk_idx_t entry_top; -#endif - -#if defined(DUK_USE_ASSERTIONS) - entry_top = duk_get_top(thr); -#endif - - /* - * Preliminaries - */ - - configurable_bindings = comp_ctx->curr_func.is_eval; - DUK_DDD(DUK_DDDPRINT("configurable_bindings=%ld", (long) configurable_bindings)); - - /* varmap is already in comp_ctx->curr_func.varmap_idx */ - - /* - * Function formal arguments, always bound to registers - * (there's no support for shuffling them now). - */ - - num_args = (duk_uarridx_t) duk_get_length(thr, comp_ctx->curr_func.argnames_idx); - DUK_DDD(DUK_DDDPRINT("num_args=%ld", (long) num_args)); - /* XXX: check num_args */ - - for (i = 0; i < num_args; i++) { - duk_get_prop_index(thr, comp_ctx->curr_func.argnames_idx, i); - h_name = duk_known_hstring(thr, -1); - - if (comp_ctx->curr_func.is_strict) { - if (duk__hstring_is_eval_or_arguments(comp_ctx, h_name)) { - DUK_DDD(DUK_DDDPRINT("arg named 'eval' or 'arguments' in strict mode -> SyntaxError")); - goto error_argname; - } - duk_dup_top(thr); - if (duk_has_prop(thr, comp_ctx->curr_func.varmap_idx)) { - DUK_DDD(DUK_DDDPRINT("duplicate arg name in strict mode -> SyntaxError")); - goto error_argname; - } - - /* Ensure argument name is not a reserved word in current - * (final) strictness. Formal argument parsing may not - * catch reserved names if strictness changes during - * parsing. - * - * We only need to do this in strict mode because non-strict - * keyword are always detected in formal argument parsing. - */ - - if (DUK_HSTRING_HAS_STRICT_RESERVED_WORD(h_name)) { - goto error_argname; - } - } - - /* overwrite any previous binding of the same name; the effect is - * that last argument of a certain name wins. - */ - - /* only functions can have arguments */ - DUK_ASSERT(comp_ctx->curr_func.is_function); - duk_push_uarridx(thr, i); /* -> [ ... name index ] */ - duk_put_prop(thr, comp_ctx->curr_func.varmap_idx); /* -> [ ... ] */ - - /* no code needs to be emitted, the regs already have values */ - } - - /* use temp_next for tracking register allocations */ - DUK__SETTEMP_CHECKMAX(comp_ctx, (duk_regconst_t) num_args); - - /* - * After arguments, allocate special registers (like shuffling temps) - */ - - if (out_stmt_value_reg) { - *out_stmt_value_reg = DUK__ALLOCTEMP(comp_ctx); - } - if (comp_ctx->curr_func.needs_shuffle) { - duk_regconst_t shuffle_base = DUK__ALLOCTEMPS(comp_ctx, 3); - comp_ctx->curr_func.shuffle1 = shuffle_base; - comp_ctx->curr_func.shuffle2 = shuffle_base + 1; - comp_ctx->curr_func.shuffle3 = shuffle_base + 2; - DUK_D(DUK_DPRINT("shuffle registers needed by function, allocated: %ld %ld %ld", - (long) comp_ctx->curr_func.shuffle1, - (long) comp_ctx->curr_func.shuffle2, - (long) comp_ctx->curr_func.shuffle3)); - } - if (comp_ctx->curr_func.temp_next > 0x100) { - DUK_D(DUK_DPRINT("not enough 8-bit regs: temp_next=%ld", (long) comp_ctx->curr_func.temp_next)); - goto error_outofregs; - } - - /* - * Function declarations - */ - - num_decls = (duk_uarridx_t) duk_get_length(thr, comp_ctx->curr_func.decls_idx); - DUK_DDD( - DUK_DDDPRINT("num_decls=%ld -> %!T", (long) num_decls, (duk_tval *) duk_get_tval(thr, comp_ctx->curr_func.decls_idx))); - for (i = 0; i < num_decls; i += 2) { - duk_int_t decl_type; - duk_int_t fnum; - - duk_get_prop_index(thr, comp_ctx->curr_func.decls_idx, i + 1); /* decl type */ - decl_type = duk_to_int(thr, -1); - fnum = decl_type >> 8; /* XXX: macros */ - decl_type = decl_type & 0xff; - duk_pop(thr); - - if (decl_type != DUK_DECL_TYPE_FUNC) { - continue; - } - - duk_get_prop_index(thr, comp_ctx->curr_func.decls_idx, i); /* decl name */ - - /* XXX: spilling */ - if (comp_ctx->curr_func.is_function) { - duk_regconst_t reg_bind; - duk_dup_top(thr); - if (duk_has_prop(thr, comp_ctx->curr_func.varmap_idx)) { - /* shadowed; update value */ - duk_dup_top(thr); - duk_get_prop(thr, comp_ctx->curr_func.varmap_idx); - reg_bind = duk_to_int(thr, -1); /* [ ... name reg_bind ] */ - duk__emit_a_bc(comp_ctx, DUK_OP_CLOSURE, reg_bind, (duk_regconst_t) fnum); - } else { - /* function: always register bound */ - reg_bind = DUK__ALLOCTEMP(comp_ctx); - duk__emit_a_bc(comp_ctx, DUK_OP_CLOSURE, reg_bind, (duk_regconst_t) fnum); - duk_push_int(thr, (duk_int_t) reg_bind); - } - } else { - /* Function declaration for global/eval code is emitted even - * for duplicates, because of E5 Section 10.5, step 5.e of - * E5.1 (special behavior for variable bound to global object). - * - * DECLVAR will not re-declare a variable as such, but will - * update the binding value. - */ - - duk_regconst_t reg_temp = DUK__ALLOCTEMP(comp_ctx); - duk_dup_top(thr); - rc_name = duk__getconst(comp_ctx); - duk_push_null(thr); - - duk__emit_a_bc(comp_ctx, DUK_OP_CLOSURE, reg_temp, (duk_regconst_t) fnum); - - declvar_flags = DUK_PROPDESC_FLAG_WRITABLE | DUK_PROPDESC_FLAG_ENUMERABLE | DUK_BC_DECLVAR_FLAG_FUNC_DECL; - - if (configurable_bindings) { - declvar_flags |= DUK_PROPDESC_FLAG_CONFIGURABLE; - } - - duk__emit_a_b_c(comp_ctx, - DUK_OP_DECLVAR | DUK__EMIT_FLAG_NO_SHUFFLE_A | DUK__EMIT_FLAG_BC_REGCONST, - (duk_regconst_t) declvar_flags /*flags*/, - rc_name /*name*/, - reg_temp /*value*/); - - DUK__SETTEMP(comp_ctx, reg_temp); /* forget temp */ - } - - DUK_DDD(DUK_DDDPRINT("function declaration to varmap: %!T -> %!T", - (duk_tval *) duk_get_tval(thr, -2), - (duk_tval *) duk_get_tval(thr, -1))); - -#if defined(DUK_USE_FASTINT) - DUK_ASSERT(DUK_TVAL_IS_NULL(duk_get_tval(thr, -1)) || DUK_TVAL_IS_FASTINT(duk_get_tval(thr, -1))); -#endif - duk_put_prop(thr, comp_ctx->curr_func.varmap_idx); /* [ ... name reg/null ] -> [ ... ] */ - } - - /* - * 'arguments' binding is special; if a shadowing argument or - * function declaration exists, an arguments object will - * definitely not be needed, regardless of whether the identifier - * 'arguments' is referenced inside the function body. - */ - - if (duk_has_prop_stridx(thr, comp_ctx->curr_func.varmap_idx, DUK_STRIDX_LC_ARGUMENTS)) { - DUK_DDD(DUK_DDDPRINT("'arguments' is shadowed by argument or function declaration " - "-> arguments object creation can be skipped")); - comp_ctx->curr_func.is_arguments_shadowed = 1; - } - - /* - * Variable declarations. - * - * Unlike function declarations, variable declaration values don't get - * assigned on entry. If a binding of the same name already exists, just - * ignore it silently. - */ - - for (i = 0; i < num_decls; i += 2) { - duk_int_t decl_type; - - duk_get_prop_index(thr, comp_ctx->curr_func.decls_idx, i + 1); /* decl type */ - decl_type = duk_to_int(thr, -1); - decl_type = decl_type & 0xff; - duk_pop(thr); - - if (decl_type != DUK_DECL_TYPE_VAR) { - continue; - } - - duk_get_prop_index(thr, comp_ctx->curr_func.decls_idx, i); /* decl name */ - - if (duk_has_prop(thr, comp_ctx->curr_func.varmap_idx)) { - /* shadowed, ignore */ - } else { - duk_get_prop_index(thr, comp_ctx->curr_func.decls_idx, i); /* decl name */ - h_name = duk_known_hstring(thr, -1); - - if (h_name == DUK_HTHREAD_STRING_LC_ARGUMENTS(thr) && !comp_ctx->curr_func.is_arguments_shadowed) { - /* E5 Section steps 7-8 */ - DUK_DDD(DUK_DDDPRINT("'arguments' not shadowed by a function declaration, " - "but appears as a variable declaration -> treat as " - "a no-op for variable declaration purposes")); - duk_pop(thr); - continue; - } - - /* XXX: spilling */ - if (comp_ctx->curr_func.is_function) { - duk_regconst_t reg_bind = DUK__ALLOCTEMP(comp_ctx); - /* no need to init reg, it will be undefined on entry */ - duk_push_int(thr, (duk_int_t) reg_bind); - } else { - duk_dup_top(thr); - rc_name = duk__getconst(comp_ctx); - duk_push_null(thr); - - declvar_flags = DUK_PROPDESC_FLAG_WRITABLE | DUK_PROPDESC_FLAG_ENUMERABLE; - if (configurable_bindings) { - declvar_flags |= DUK_PROPDESC_FLAG_CONFIGURABLE; - } - - duk__emit_a_b_c(comp_ctx, - DUK_OP_DECLVAR | DUK__EMIT_FLAG_NO_SHUFFLE_A | DUK__EMIT_FLAG_BC_REGCONST, - (duk_regconst_t) declvar_flags /*flags*/, - rc_name /*name*/, - 0 /*value*/); - } - - duk_put_prop(thr, comp_ctx->curr_func.varmap_idx); /* [ ... name reg/null ] -> [ ... ] */ - } - } - - /* - * Wrap up - */ - - DUK_DDD(DUK_DDDPRINT("varmap: %!T, is_arguments_shadowed=%ld", - (duk_tval *) duk_get_tval(thr, comp_ctx->curr_func.varmap_idx), - (long) comp_ctx->curr_func.is_arguments_shadowed)); - - DUK_ASSERT_TOP(thr, entry_top); - return; - -error_outofregs: - DUK_ERROR_RANGE(thr, DUK_STR_REG_LIMIT); - DUK_WO_NORETURN(return;); - -error_argname: - DUK_ERROR_SYNTAX(thr, DUK_STR_INVALID_ARG_NAME); - DUK_WO_NORETURN(return;); -} - -/* - * Parse a function-body-like expression (FunctionBody or Program - * in E5 grammar) using a two-pass parse. The productions appear - * in the following contexts: - * - * - function expression - * - function statement - * - function declaration - * - getter in object literal - * - setter in object literal - * - global code - * - eval code - * - Function constructor body - * - * This function only parses the statement list of the body; the argument - * list and possible function name must be initialized by the caller. - * For instance, for Function constructor, the argument names are originally - * on the value stack. The parsing of statements ends either at an EOF or - * a closing brace; this is controlled by an input flag. - * - * Note that there are many differences affecting parsing and even code - * generation: - * - * - Global and eval code have an implicit return value generated - * by the last statement; function code does not - * - * - Global code, eval code, and Function constructor body end in - * an EOF, other bodies in a closing brace ('}') - * - * Upon entry, 'curr_tok' is ignored and the function will pull in the - * first token on its own. Upon exit, 'curr_tok' is the terminating - * token (EOF or closing brace). - */ - -DUK_LOCAL void duk__parse_func_body(duk_compiler_ctx *comp_ctx, - duk_bool_t expect_eof, - duk_bool_t implicit_return_value, - duk_bool_t regexp_after, - duk_small_int_t expect_token) { - duk_compiler_func *func; - duk_hthread *thr; - duk_regconst_t reg_stmt_value = -1; - duk_lexer_point lex_pt; - duk_regconst_t temp_first; - duk_small_int_t compile_round = 1; - - DUK_ASSERT(comp_ctx != NULL); - - thr = comp_ctx->thr; - DUK_ASSERT(thr != NULL); - - func = &comp_ctx->curr_func; - DUK_ASSERT(func != NULL); - - DUK__RECURSION_INCREASE(comp_ctx, thr); - - duk_require_stack(thr, DUK__FUNCTION_BODY_REQUIRE_SLOTS); - - /* - * Store lexer position for a later rewind - */ - - DUK_LEXER_GETPOINT(&comp_ctx->lex, &lex_pt); - - /* - * Program code (global and eval code) has an implicit return value - * from the last statement value (e.g. eval("1; 2+3;") returns 3). - * This is not the case with functions. If implicit statement return - * value is requested, all statements are coerced to a register - * allocated here, and used in the implicit return statement below. - */ - - /* XXX: this is pointless here because pass 1 is throw-away */ - if (implicit_return_value) { - reg_stmt_value = DUK__ALLOCTEMP(comp_ctx); - - /* If an implicit return value is needed by caller, it must be - * initialized to 'undefined' because we don't know whether any - * non-empty (where "empty" is a continuation type, and different - * from an empty statement) statements will be executed. - * - * However, since 1st pass is a throwaway one, no need to emit - * it here. - */ -#if 0 - duk__emit_bc(comp_ctx, - DUK_OP_LDUNDEF, - 0); -#endif - } - - /* - * First pass. - * - * Gather variable/function declarations needed for second pass. - * Code generated is dummy and discarded. - */ - - func->in_directive_prologue = 1; - func->in_scanning = 1; - func->may_direct_eval = 0; - func->id_access_arguments = 0; - func->id_access_slow = 0; - func->id_access_slow_own = 0; - func->reg_stmt_value = reg_stmt_value; -#if defined(DUK_USE_DEBUGGER_SUPPORT) - func->min_line = DUK_INT_MAX; - func->max_line = 0; -#endif - - /* duk__parse_stmts() expects curr_tok to be set; parse in "allow - * regexp literal" mode with current strictness. - */ - if (expect_token >= 0) { - /* Eating a left curly; regexp mode is allowed by left curly - * based on duk__token_lbp[] automatically. - */ - DUK_ASSERT(expect_token == DUK_TOK_LCURLY); - duk__update_lineinfo_currtoken(comp_ctx); - duk__advance_expect(comp_ctx, expect_token); - } else { - /* Need to set curr_token.t because lexing regexp mode depends on current - * token type. Zero value causes "allow regexp" mode. - */ - comp_ctx->curr_token.t = 0; - duk__advance(comp_ctx); - } - - DUK_DDD(DUK_DDDPRINT("begin 1st pass")); - duk__parse_stmts(comp_ctx, - 1, /* allow source elements */ - expect_eof, /* expect EOF instead of } */ - regexp_after); /* regexp after */ - DUK_DDD(DUK_DDDPRINT("end 1st pass")); - - /* - * Second (and possibly third) pass. - * - * Generate actual code. In most cases the need for shuffle - * registers is detected during pass 1, but in some corner cases - * we'll only detect it during pass 2 and a third pass is then - * needed (see GH-115). - */ - - for (;;) { - duk_bool_t needs_shuffle_before = comp_ctx->curr_func.needs_shuffle; - compile_round++; - - /* - * Rewind lexer. - * - * duk__parse_stmts() expects curr_tok to be set; parse in "allow regexp - * literal" mode with current strictness. - * - * curr_token line number info should be initialized for pass 2 before - * generating prologue, to ensure prologue bytecode gets nice line numbers. - */ - - DUK_DDD(DUK_DDDPRINT("rewind lexer")); - DUK_LEXER_SETPOINT(&comp_ctx->lex, &lex_pt); - comp_ctx->curr_token.t = 0; /* this is needed for regexp mode */ - comp_ctx->curr_token.start_line = 0; /* needed for line number tracking (becomes prev_token.start_line) */ - duk__advance(comp_ctx); - - /* - * Reset function state and perform register allocation, which creates - * 'varmap' for second pass. Function prologue for variable declarations, - * binding value initializations etc is emitted as a by-product. - * - * Strict mode restrictions for duplicate and invalid argument - * names are checked here now that we know whether the function - * is actually strict. See: test-dev-strict-mode-boundary.js. - * - * Inner functions are compiled during pass 1 and are not reset. - */ - - duk__reset_func_for_pass2(comp_ctx); - func->in_directive_prologue = 1; - func->in_scanning = 0; - - /* must be able to emit code, alloc consts, etc. */ - - duk__init_varmap_and_prologue_for_pass2(comp_ctx, (implicit_return_value ? ®_stmt_value : NULL)); - func->reg_stmt_value = reg_stmt_value; - - temp_first = DUK__GETTEMP(comp_ctx); - - func->temp_first = temp_first; - func->temp_next = temp_first; - func->stmt_next = 0; - func->label_next = 0; - - /* XXX: init or assert catch depth etc -- all values */ - func->id_access_arguments = 0; - func->id_access_slow = 0; - func->id_access_slow_own = 0; - - /* - * Check function name validity now that we know strictness. - * This only applies to function declarations and expressions, - * not setter/getter name. - * - * See: test-dev-strict-mode-boundary.js - */ - - if (func->is_function && !func->is_setget && func->h_name != NULL) { - if (func->is_strict) { - if (duk__hstring_is_eval_or_arguments(comp_ctx, func->h_name)) { - DUK_DDD(DUK_DDDPRINT("func name is 'eval' or 'arguments' in strict mode")); - goto error_funcname; - } - if (DUK_HSTRING_HAS_STRICT_RESERVED_WORD(func->h_name)) { - DUK_DDD(DUK_DDDPRINT("func name is a reserved word in strict mode")); - goto error_funcname; - } - } else { - if (DUK_HSTRING_HAS_RESERVED_WORD(func->h_name) && - !DUK_HSTRING_HAS_STRICT_RESERVED_WORD(func->h_name)) { - DUK_DDD(DUK_DDDPRINT("func name is a reserved word in non-strict mode")); - goto error_funcname; - } - } - } - - /* - * Second pass parsing. - */ - - if (implicit_return_value) { - /* Default implicit return value. */ - duk__emit_bc(comp_ctx, DUK_OP_LDUNDEF, 0); - } - - DUK_DDD(DUK_DDDPRINT("begin 2nd pass")); - duk__parse_stmts(comp_ctx, - 1, /* allow source elements */ - expect_eof, /* expect EOF instead of } */ - regexp_after); /* regexp after */ - DUK_DDD(DUK_DDDPRINT("end 2nd pass")); - - duk__update_lineinfo_currtoken(comp_ctx); - - if (needs_shuffle_before == comp_ctx->curr_func.needs_shuffle) { - /* Shuffle decision not changed. */ - break; - } - if (compile_round >= 3) { - /* Should never happen but avoid infinite loop just in case. */ - DUK_D(DUK_DPRINT("more than 3 compile passes needed, should never happen")); - DUK_ERROR_INTERNAL(thr); - DUK_WO_NORETURN(return;); - } - DUK_D(DUK_DPRINT("need additional round to compile function, round now %d", (int) compile_round)); - } - - /* - * Emit a final RETURN. - * - * It would be nice to avoid emitting an unnecessary "return" opcode - * if the current PC is not reachable. However, this cannot be reliably - * detected; even if the previous instruction is an unconditional jump, - * there may be a previous jump which jumps to current PC (which is the - * case for iteration and conditional statements, for instance). - */ - - /* XXX: request a "last statement is terminal" from duk__parse_stmt() and duk__parse_stmts(); - * we could avoid the last RETURN if we could ensure there is no way to get here - * (directly or via a jump) - */ - - DUK_ASSERT(comp_ctx->curr_func.catch_depth == 0); - if (reg_stmt_value >= 0) { - DUK_ASSERT(DUK__ISREG(reg_stmt_value)); - duk__emit_bc(comp_ctx, DUK_OP_RETREG, reg_stmt_value /*reg*/); - } else { - duk__emit_op_only(comp_ctx, DUK_OP_RETUNDEF); - } - - /* - * Peephole optimize JUMP chains. - */ - - duk__peephole_optimize_bytecode(comp_ctx); - - /* - * comp_ctx->curr_func is now ready to be converted into an actual - * function template. - */ - - DUK__RECURSION_DECREASE(comp_ctx, thr); - return; - -error_funcname: - DUK_ERROR_SYNTAX(thr, DUK_STR_INVALID_FUNC_NAME); - DUK_WO_NORETURN(return;); -} - -/* - * Parse a function-like expression: - * - * - function expression - * - function declaration - * - function statement (non-standard) - * - setter/getter - * - * Adds the function to comp_ctx->curr_func function table and returns the - * function number. - * - * On entry, curr_token points to: - * - * - the token after 'function' for function expression/declaration/statement - * - the token after 'set' or 'get' for setter/getter - */ - -/* Parse formals. */ -DUK_LOCAL void duk__parse_func_formals(duk_compiler_ctx *comp_ctx) { - duk_hthread *thr = comp_ctx->thr; - duk_bool_t first = 1; - duk_uarridx_t n; - - for (;;) { - if (comp_ctx->curr_token.t == DUK_TOK_RPAREN) { - break; - } - - if (first) { - /* no comma */ - first = 0; - } else { - duk__advance_expect(comp_ctx, DUK_TOK_COMMA); - } - - /* Note: when parsing a formal list in non-strict context, e.g. - * "implements" is parsed as an identifier. When the function is - * later detected to be strict, the argument list must be rechecked - * against a larger set of reserved words (that of strict mode). - * This is handled by duk__parse_func_body(). Here we recognize - * whatever tokens are considered reserved in current strictness - * (which is not always enough). - */ - - if (comp_ctx->curr_token.t != DUK_TOK_IDENTIFIER) { - DUK_ERROR_SYNTAX(thr, DUK_STR_EXPECTED_IDENTIFIER); - DUK_WO_NORETURN(return;); - } - DUK_ASSERT(comp_ctx->curr_token.t == DUK_TOK_IDENTIFIER); - DUK_ASSERT(comp_ctx->curr_token.str1 != NULL); - DUK_DDD(DUK_DDDPRINT("formal argument: %!O", (duk_heaphdr *) comp_ctx->curr_token.str1)); - - /* XXX: append primitive */ - duk_push_hstring(thr, comp_ctx->curr_token.str1); - n = (duk_uarridx_t) duk_get_length(thr, comp_ctx->curr_func.argnames_idx); - duk_put_prop_index(thr, comp_ctx->curr_func.argnames_idx, n); - - duk__advance(comp_ctx); /* eat identifier */ - } -} - -/* Parse a function-like expression, assuming that 'comp_ctx->curr_func' is - * correctly set up. Assumes that curr_token is just after 'function' (or - * 'set'/'get' etc). - */ -DUK_LOCAL void duk__parse_func_like_raw(duk_compiler_ctx *comp_ctx, duk_small_uint_t flags) { - duk_hthread *thr = comp_ctx->thr; - duk_token *tok; - duk_bool_t no_advance; - - DUK_ASSERT(comp_ctx->curr_func.num_formals == 0); - DUK_ASSERT(comp_ctx->curr_func.is_function == 1); - DUK_ASSERT(comp_ctx->curr_func.is_eval == 0); - DUK_ASSERT(comp_ctx->curr_func.is_global == 0); - DUK_ASSERT(comp_ctx->curr_func.is_setget == ((flags & DUK__FUNC_FLAG_GETSET) != 0)); - - duk__update_lineinfo_currtoken(comp_ctx); - - /* - * Function name (if any) - * - * We don't check for prohibited names here, because we don't - * yet know whether the function will be strict. Function body - * parsing handles this retroactively. - * - * For function expressions and declarations function name must - * be an Identifer (excludes reserved words). For setter/getter - * it is a PropertyName which allows reserved words and also - * strings and numbers (e.g. "{ get 1() { ... } }"). - * - * Function parsing may start either from prev_token or curr_token - * (object literal method definition uses prev_token for example). - * This is dealt with for the initial token. - */ - - no_advance = (flags & DUK__FUNC_FLAG_USE_PREVTOKEN); - if (no_advance) { - tok = &comp_ctx->prev_token; - } else { - tok = &comp_ctx->curr_token; - } - - if (flags & DUK__FUNC_FLAG_GETSET) { - /* PropertyName -> IdentifierName | StringLiteral | NumericLiteral */ - if (tok->t_nores == DUK_TOK_IDENTIFIER || tok->t == DUK_TOK_STRING) { - duk_push_hstring(thr, tok->str1); /* keep in valstack */ - } else if (tok->t == DUK_TOK_NUMBER) { - duk_push_number(thr, tok->num); - duk_to_string(thr, -1); - } else { - DUK_ERROR_SYNTAX(thr, DUK_STR_INVALID_GETSET_NAME); - DUK_WO_NORETURN(return;); - } - comp_ctx->curr_func.h_name = duk_known_hstring(thr, -1); /* borrowed reference */ - } else { - /* Function name is an Identifier (not IdentifierName), but we get - * the raw name (not recognizing keywords) here and perform the name - * checks only after pass 1. - */ - if (tok->t_nores == DUK_TOK_IDENTIFIER) { - duk_push_hstring(thr, tok->str1); /* keep in valstack */ - comp_ctx->curr_func.h_name = duk_known_hstring(thr, -1); /* borrowed reference */ - } else { - /* valstack will be unbalanced, which is OK */ - DUK_ASSERT((flags & DUK__FUNC_FLAG_GETSET) == 0); - DUK_ASSERT(comp_ctx->curr_func.h_name == NULL); - no_advance = 1; - if (flags & DUK__FUNC_FLAG_DECL) { - DUK_ERROR_SYNTAX(thr, DUK_STR_FUNC_NAME_REQUIRED); - DUK_WO_NORETURN(return;); - } - } - } - - DUK_DD(DUK_DDPRINT("function name: %!O", (duk_heaphdr *) comp_ctx->curr_func.h_name)); - - if (!no_advance) { - duk__advance(comp_ctx); - } - - /* - * Formal argument list - * - * We don't check for prohibited names or for duplicate argument - * names here, becase we don't yet know whether the function will - * be strict. Function body parsing handles this retroactively. - */ - - duk__advance_expect(comp_ctx, DUK_TOK_LPAREN); - - duk__parse_func_formals(comp_ctx); - - DUK_ASSERT(comp_ctx->curr_token.t == DUK_TOK_RPAREN); - duk__advance(comp_ctx); - - /* - * Parse function body - */ - - duk__parse_func_body(comp_ctx, - 0, /* expect_eof */ - 0, /* implicit_return_value */ - flags & DUK__FUNC_FLAG_DECL, /* regexp_after */ - DUK_TOK_LCURLY); /* expect_token */ - - /* - * Convert duk_compiler_func to a function template and add it - * to the parent function table. - */ - - duk__convert_to_func_template(comp_ctx); /* -> [ ... func ] */ -} - -/* Parse an inner function, adding the function template to the current function's - * function table. Return a function number to be used by the outer function. - * - * Avoiding O(depth^2) inner function parsing is handled here. On the first pass, - * compile and register the function normally into the 'funcs' array, also recording - * a lexer point (offset/line) to the closing brace of the function. On the second - * pass, skip the function and return the same 'fnum' as on the first pass by using - * a running counter. - * - * An unfortunate side effect of this is that when parsing the inner function, almost - * nothing is known of the outer function, i.e. the inner function's scope. We don't - * need that information at the moment, but it would allow some optimizations if it - * were used. - */ -DUK_LOCAL duk_int_t duk__parse_func_like_fnum(duk_compiler_ctx *comp_ctx, duk_small_uint_t flags) { - duk_hthread *thr = comp_ctx->thr; - duk_compiler_func old_func; - duk_idx_t entry_top; - duk_int_t fnum; - - /* - * On second pass, skip the function. - */ - - if (!comp_ctx->curr_func.in_scanning) { - duk_lexer_point lex_pt; - - fnum = comp_ctx->curr_func.fnum_next++; - duk_get_prop_index(thr, comp_ctx->curr_func.funcs_idx, (duk_uarridx_t) (fnum * 3 + 1)); - lex_pt.offset = (duk_size_t) duk_to_uint(thr, -1); - duk_pop(thr); - duk_get_prop_index(thr, comp_ctx->curr_func.funcs_idx, (duk_uarridx_t) (fnum * 3 + 2)); - lex_pt.line = duk_to_int(thr, -1); - duk_pop(thr); - - DUK_DDD( - DUK_DDDPRINT("second pass of an inner func, skip the function, reparse closing brace; lex offset=%ld, line=%ld", - (long) lex_pt.offset, - (long) lex_pt.line)); - - DUK_LEXER_SETPOINT(&comp_ctx->lex, &lex_pt); - comp_ctx->curr_token.t = 0; /* this is needed for regexp mode */ - comp_ctx->curr_token.start_line = 0; /* needed for line number tracking (becomes prev_token.start_line) */ - duk__advance(comp_ctx); - - /* RegExp is not allowed after a function expression, e.g. in - * (function () {} / 123). A RegExp *is* allowed after a - * function declaration! - */ - if (flags & DUK__FUNC_FLAG_DECL) { - comp_ctx->curr_func.allow_regexp_in_adv = 1; - } - duk__advance_expect(comp_ctx, DUK_TOK_RCURLY); - - return fnum; - } - - /* - * On first pass, perform actual parsing. Remember valstack top on entry - * to restore it later, and switch to using a new function in comp_ctx. - */ - - entry_top = duk_get_top(thr); - DUK_DDD(DUK_DDDPRINT("before func: entry_top=%ld, curr_tok.start_offset=%ld", - (long) entry_top, - (long) comp_ctx->curr_token.start_offset)); - - duk_memcpy(&old_func, &comp_ctx->curr_func, sizeof(duk_compiler_func)); - - duk_memzero(&comp_ctx->curr_func, sizeof(duk_compiler_func)); - duk__init_func_valstack_slots(comp_ctx); - DUK_ASSERT(comp_ctx->curr_func.num_formals == 0); - - /* inherit initial strictness from parent */ - comp_ctx->curr_func.is_strict = old_func.is_strict; - - /* XXX: It might be better to just store the flags into the curr_func - * struct and use them as is without this flag interpretation step - * here. - */ - DUK_ASSERT(comp_ctx->curr_func.is_notail == 0); - comp_ctx->curr_func.is_function = 1; - DUK_ASSERT(comp_ctx->curr_func.is_eval == 0); - DUK_ASSERT(comp_ctx->curr_func.is_global == 0); - comp_ctx->curr_func.is_setget = ((flags & DUK__FUNC_FLAG_GETSET) != 0); - comp_ctx->curr_func.is_namebinding = - !(flags & (DUK__FUNC_FLAG_GETSET | DUK__FUNC_FLAG_METDEF | - DUK__FUNC_FLAG_DECL)); /* no name binding for: declarations, objlit getset, objlit method def */ - comp_ctx->curr_func.is_constructable = - !(flags & (DUK__FUNC_FLAG_GETSET | DUK__FUNC_FLAG_METDEF)); /* not constructable: objlit getset, objlit method def */ - - /* - * Parse inner function - */ - - duk__parse_func_like_raw(comp_ctx, flags); /* pushes function template */ - - /* prev_token.start_offset points to the closing brace here; when skipping - * we're going to reparse the closing brace to ensure semicolon insertion - * etc work as expected. - */ - DUK_DDD(DUK_DDDPRINT("after func: prev_tok.start_offset=%ld, curr_tok.start_offset=%ld", - (long) comp_ctx->prev_token.start_offset, - (long) comp_ctx->curr_token.start_offset)); - DUK_ASSERT(comp_ctx->lex.input[comp_ctx->prev_token.start_offset] == (duk_uint8_t) DUK_ASC_RCURLY); - - /* XXX: append primitive */ - DUK_ASSERT(duk_get_length(thr, old_func.funcs_idx) == (duk_size_t) (old_func.fnum_next * 3)); - fnum = old_func.fnum_next++; - - if (fnum > DUK__MAX_FUNCS) { - DUK_ERROR_RANGE(comp_ctx->thr, DUK_STR_FUNC_LIMIT); - DUK_WO_NORETURN(return 0;); - } - - /* array writes autoincrement length */ - (void) duk_put_prop_index(thr, old_func.funcs_idx, (duk_uarridx_t) (fnum * 3)); - duk_push_size_t(thr, comp_ctx->prev_token.start_offset); - (void) duk_put_prop_index(thr, old_func.funcs_idx, (duk_uarridx_t) (fnum * 3 + 1)); - duk_push_int(thr, comp_ctx->prev_token.start_line); - (void) duk_put_prop_index(thr, old_func.funcs_idx, (duk_uarridx_t) (fnum * 3 + 2)); - - /* - * Cleanup: restore original function, restore valstack state. - * - * Function declaration handling needs the function name to be pushed - * on the value stack. - */ - - if (flags & DUK__FUNC_FLAG_PUSHNAME_PASS1) { - DUK_ASSERT(comp_ctx->curr_func.h_name != NULL); - duk_push_hstring(thr, comp_ctx->curr_func.h_name); - duk_replace(thr, entry_top); - duk_set_top(thr, entry_top + 1); - } else { - duk_set_top(thr, entry_top); - } - duk_memcpy((void *) &comp_ctx->curr_func, (void *) &old_func, sizeof(duk_compiler_func)); - - return fnum; -} - -/* - * Compile input string into an executable function template without - * arguments. - * - * The string is parsed as the "Program" production of ECMAScript E5. - * Compilation context can be either global code or eval code (see E5 - * Sections 14 and 15.1.2.1). - * - * Input stack: [ ... filename ] - * Output stack: [ ... func_template ] - */ - -/* XXX: source code property */ - -DUK_LOCAL duk_ret_t duk__js_compile_raw(duk_hthread *thr, void *udata) { - duk_hstring *h_filename; - duk__compiler_stkstate *comp_stk; - duk_compiler_ctx *comp_ctx; - duk_lexer_point *lex_pt; - duk_compiler_func *func; - duk_idx_t entry_top; - duk_bool_t is_strict; - duk_bool_t is_eval; - duk_bool_t is_funcexpr; - duk_small_uint_t flags; - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(udata != NULL); - - /* - * Arguments check - */ - - entry_top = duk_get_top(thr); - DUK_ASSERT(entry_top >= 1); - - comp_stk = (duk__compiler_stkstate *) udata; - comp_ctx = &comp_stk->comp_ctx_alloc; - lex_pt = &comp_stk->lex_pt_alloc; - DUK_ASSERT(comp_ctx != NULL); - DUK_ASSERT(lex_pt != NULL); - - flags = comp_stk->flags; - is_eval = (flags & DUK_COMPILE_EVAL ? 1 : 0); - is_strict = (flags & DUK_COMPILE_STRICT ? 1 : 0); - is_funcexpr = (flags & DUK_COMPILE_FUNCEXPR ? 1 : 0); - - h_filename = duk_get_hstring(thr, -1); /* may be undefined */ - - /* - * Init compiler and lexer contexts - */ - - func = &comp_ctx->curr_func; -#if defined(DUK_USE_EXPLICIT_NULL_INIT) - comp_ctx->thr = NULL; - comp_ctx->h_filename = NULL; - comp_ctx->prev_token.str1 = NULL; - comp_ctx->prev_token.str2 = NULL; - comp_ctx->curr_token.str1 = NULL; - comp_ctx->curr_token.str2 = NULL; -#endif - - duk_require_stack(thr, DUK__COMPILE_ENTRY_SLOTS); - - duk_push_dynamic_buffer(thr, 0); /* entry_top + 0 */ - duk_push_undefined(thr); /* entry_top + 1 */ - duk_push_undefined(thr); /* entry_top + 2 */ - duk_push_undefined(thr); /* entry_top + 3 */ - duk_push_undefined(thr); /* entry_top + 4 */ - - comp_ctx->thr = thr; - comp_ctx->h_filename = h_filename; - comp_ctx->tok11_idx = entry_top + 1; - comp_ctx->tok12_idx = entry_top + 2; - comp_ctx->tok21_idx = entry_top + 3; - comp_ctx->tok22_idx = entry_top + 4; - comp_ctx->recursion_limit = DUK_USE_COMPILER_RECLIMIT; - - /* comp_ctx->lex has been pre-initialized by caller: it has been - * zeroed and input/input_length has been set. - */ - comp_ctx->lex.thr = thr; - /* comp_ctx->lex.input and comp_ctx->lex.input_length filled by caller */ - comp_ctx->lex.slot1_idx = comp_ctx->tok11_idx; - comp_ctx->lex.slot2_idx = comp_ctx->tok12_idx; - comp_ctx->lex.buf_idx = entry_top + 0; - comp_ctx->lex.buf = (duk_hbuffer_dynamic *) duk_known_hbuffer(thr, entry_top + 0); - DUK_ASSERT(DUK_HBUFFER_HAS_DYNAMIC(comp_ctx->lex.buf) && !DUK_HBUFFER_HAS_EXTERNAL(comp_ctx->lex.buf)); - comp_ctx->lex.token_limit = DUK_COMPILER_TOKEN_LIMIT; - - lex_pt->offset = 0; - lex_pt->line = 1; - DUK_LEXER_SETPOINT(&comp_ctx->lex, lex_pt); /* fills window */ - comp_ctx->curr_token.start_line = 0; /* needed for line number tracking (becomes prev_token.start_line) */ - - /* - * Initialize function state for a zero-argument function - */ - - duk__init_func_valstack_slots(comp_ctx); - DUK_ASSERT(func->num_formals == 0); - - if (is_funcexpr) { - /* Name will be filled from function expression, not by caller. - * This case is used by Function constructor and duk_compile() - * API with the DUK_COMPILE_FUNCTION option. - */ - DUK_ASSERT(func->h_name == NULL); - } else { - duk_push_hstring_stridx(thr, (is_eval ? DUK_STRIDX_EVAL : DUK_STRIDX_GLOBAL)); - func->h_name = duk_get_hstring(thr, -1); - } - - /* - * Parse a function body or a function-like expression, depending - * on flags. - */ - - DUK_ASSERT(func->is_setget == 0); - func->is_strict = (duk_uint8_t) is_strict; - DUK_ASSERT(func->is_notail == 0); - - if (is_funcexpr) { - func->is_function = 1; - DUK_ASSERT(func->is_eval == 0); - DUK_ASSERT(func->is_global == 0); - func->is_namebinding = 1; - func->is_constructable = 1; - - duk__advance(comp_ctx); /* init 'curr_token' */ - duk__advance_expect(comp_ctx, DUK_TOK_FUNCTION); - (void) duk__parse_func_like_raw(comp_ctx, 0 /*flags*/); - } else { - DUK_ASSERT(func->is_function == 0); - DUK_ASSERT(is_eval == 0 || is_eval == 1); - func->is_eval = (duk_uint8_t) is_eval; - func->is_global = (duk_uint8_t) !is_eval; - DUK_ASSERT(func->is_namebinding == 0); - DUK_ASSERT(func->is_constructable == 0); - - duk__parse_func_body(comp_ctx, - 1, /* expect_eof */ - 1, /* implicit_return_value */ - 1, /* regexp_after (does not matter) */ - -1); /* expect_token */ - } - - /* - * Convert duk_compiler_func to a function template - */ - - duk__convert_to_func_template(comp_ctx); - - /* - * Wrapping duk_safe_call() will mangle the stack, just return stack top - */ - - /* [ ... filename (temps) func ] */ - - return 1; -} - -DUK_INTERNAL void duk_js_compile(duk_hthread *thr, const duk_uint8_t *src_buffer, duk_size_t src_length, duk_small_uint_t flags) { - duk__compiler_stkstate comp_stk; - duk_compiler_ctx *prev_ctx; - duk_ret_t safe_rc; - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(src_buffer != NULL); - - /* preinitialize lexer state partially */ - duk_memzero(&comp_stk, sizeof(comp_stk)); - comp_stk.flags = flags; - DUK_LEXER_INITCTX(&comp_stk.comp_ctx_alloc.lex); - comp_stk.comp_ctx_alloc.lex.input = src_buffer; - comp_stk.comp_ctx_alloc.lex.input_length = src_length; - comp_stk.comp_ctx_alloc.lex.flags = flags; /* Forward flags directly for now. */ - - /* [ ... filename ] */ - - prev_ctx = thr->compile_ctx; - thr->compile_ctx = &comp_stk.comp_ctx_alloc; /* for duk_error_augment.c */ - safe_rc = duk_safe_call(thr, duk__js_compile_raw, (void *) &comp_stk /*udata*/, 1 /*nargs*/, 1 /*nrets*/); - thr->compile_ctx = prev_ctx; /* must restore reliably before returning */ - - if (safe_rc != DUK_EXEC_SUCCESS) { - DUK_D(DUK_DPRINT("compilation failed: %!T", duk_get_tval(thr, -1))); - (void) duk_throw(thr); - DUK_WO_NORETURN(return;); - } - - /* [ ... template ] */ -} - -/* automatic undefs */ -#undef DUK__ALLOCTEMP -#undef DUK__ALLOCTEMPS -#undef DUK__ALLOW_AUTO_SEMI_ALWAYS -#undef DUK__BC_INITIAL_INSTS -#undef DUK__BP_ADDITIVE -#undef DUK__BP_ASSIGNMENT -#undef DUK__BP_BAND -#undef DUK__BP_BOR -#undef DUK__BP_BXOR -#undef DUK__BP_CALL -#undef DUK__BP_CLOSING -#undef DUK__BP_COMMA -#undef DUK__BP_CONDITIONAL -#undef DUK__BP_EOF -#undef DUK__BP_EQUALITY -#undef DUK__BP_EXPONENTIATION -#undef DUK__BP_FOR_EXPR -#undef DUK__BP_INVALID -#undef DUK__BP_LAND -#undef DUK__BP_LOR -#undef DUK__BP_MEMBER -#undef DUK__BP_MULTIPLICATIVE -#undef DUK__BP_POSTFIX -#undef DUK__BP_RELATIONAL -#undef DUK__BP_SHIFT -#undef DUK__COMPILE_ENTRY_SLOTS -#undef DUK__CONST_MARKER -#undef DUK__DUMP_ISPEC -#undef DUK__DUMP_IVALUE -#undef DUK__EMIT_FLAG_A_IS_SOURCE -#undef DUK__EMIT_FLAG_BC_REGCONST -#undef DUK__EMIT_FLAG_B_IS_TARGET -#undef DUK__EMIT_FLAG_C_IS_TARGET -#undef DUK__EMIT_FLAG_NO_SHUFFLE_A -#undef DUK__EMIT_FLAG_NO_SHUFFLE_B -#undef DUK__EMIT_FLAG_NO_SHUFFLE_C -#undef DUK__EMIT_FLAG_RESERVE_JUMPSLOT -#undef DUK__EXPR_FLAG_ALLOW_EMPTY -#undef DUK__EXPR_FLAG_REJECT_IN -#undef DUK__EXPR_FLAG_REQUIRE_INIT -#undef DUK__EXPR_RBP_MASK -#undef DUK__FUNCTION_BODY_REQUIRE_SLOTS -#undef DUK__FUNCTION_INIT_REQUIRE_SLOTS -#undef DUK__FUNC_FLAG_DECL -#undef DUK__FUNC_FLAG_GETSET -#undef DUK__FUNC_FLAG_METDEF -#undef DUK__FUNC_FLAG_PUSHNAME_PASS1 -#undef DUK__FUNC_FLAG_USE_PREVTOKEN -#undef DUK__GETCONST_MAX_CONSTS_CHECK -#undef DUK__GETTEMP -#undef DUK__HAS_TERM -#undef DUK__HAS_VAL -#undef DUK__ISCONST -#undef DUK__ISREG -#undef DUK__ISREG_NOTTEMP -#undef DUK__ISREG_TEMP -#undef DUK__IS_TERMINAL -#undef DUK__IVAL_FLAG_ALLOW_CONST -#undef DUK__IVAL_FLAG_REQUIRE_SHORT -#undef DUK__IVAL_FLAG_REQUIRE_TEMP -#undef DUK__MAX_ARRAY_INIT_VALUES -#undef DUK__MAX_CONSTS -#undef DUK__MAX_FUNCS -#undef DUK__MAX_OBJECT_INIT_PAIRS -#undef DUK__MAX_TEMPS -#undef DUK__MK_LBP -#undef DUK__MK_LBP_FLAGS -#undef DUK__OBJ_LIT_KEY_GET -#undef DUK__OBJ_LIT_KEY_PLAIN -#undef DUK__OBJ_LIT_KEY_SET -#undef DUK__PARSE_EXPR_SLOTS -#undef DUK__PARSE_STATEMENTS_SLOTS -#undef DUK__RECURSION_DECREASE -#undef DUK__RECURSION_INCREASE -#undef DUK__REMOVECONST -#undef DUK__SETTEMP -#undef DUK__SETTEMP_CHECKMAX -#undef DUK__STILL_PROLOGUE -#undef DUK__TOKEN_LBP_BP_MASK -#undef DUK__TOKEN_LBP_FLAG_NO_REGEXP -#undef DUK__TOKEN_LBP_FLAG_TERMINATES -#undef DUK__TOKEN_LBP_FLAG_UNUSED -#undef DUK__TOKEN_LBP_GET_BP -#line 1 "duk_js_executor.c" -/* - * ECMAScript bytecode executor. - */ - -/* #include duk_internal.h -> already included */ - -/* - * Local declarations. - */ - -DUK_LOCAL_DECL void duk__js_execute_bytecode_inner(duk_hthread *entry_thread, duk_activation *entry_act); - -/* - * Misc helpers. - */ - -/* Replace value stack top to value at 'tv_ptr'. Optimize for - * performance by only applying the net refcount change. - */ -#define DUK__REPLACE_TO_TVPTR(thr, tv_ptr) \ - do { \ - duk_hthread *duk__thr; \ - duk_tval *duk__tvsrc; \ - duk_tval *duk__tvdst; \ - duk_tval duk__tvtmp; \ - duk__thr = (thr); \ - duk__tvsrc = DUK_GET_TVAL_NEGIDX(duk__thr, -1); \ - duk__tvdst = (tv_ptr); \ - DUK_TVAL_SET_TVAL(&duk__tvtmp, duk__tvdst); \ - DUK_TVAL_SET_TVAL(duk__tvdst, duk__tvsrc); \ - DUK_TVAL_SET_UNDEFINED(duk__tvsrc); /* value stack init policy */ \ - duk__thr->valstack_top = duk__tvsrc; \ - DUK_TVAL_DECREF(duk__thr, &duk__tvtmp); \ - } while (0) - -/* XXX: candidate of being an internal shared API call */ -#if 0 /* unused */ -DUK_LOCAL void duk__push_tvals_incref_only(duk_hthread *thr, duk_tval *tv_src, duk_small_uint_fast_t count) { - duk_tval *tv_dst; - duk_size_t copy_size; - duk_size_t i; - - tv_dst = thr->valstack_top; - copy_size = sizeof(duk_tval) * count; - duk_memcpy((void *) tv_dst, (const void *) tv_src, copy_size); - for (i = 0; i < count; i++) { - DUK_TVAL_INCREF(thr, tv_dst); - tv_dst++; - } - thr->valstack_top = tv_dst; -} -#endif - -/* - * Arithmetic, binary, and logical helpers. - * - * Note: there is no opcode for logical AND or logical OR; this is on - * purpose, because the evalution order semantics for them make such - * opcodes pretty pointless: short circuiting means they are most - * comfortably implemented as jumps. However, a logical NOT opcode - * is useful. - * - * Note: careful with duk_tval pointers here: they are potentially - * invalidated by any DECREF and almost any API call. It's still - * preferable to work without making a copy but that's not always - * possible. - */ - -DUK_LOCAL DUK_EXEC_ALWAYS_INLINE_PERF duk_double_t duk__compute_mod(duk_double_t d1, duk_double_t d2) { - return (duk_double_t) duk_js_arith_mod((double) d1, (double) d2); -} - -#if defined(DUK_USE_ES7_EXP_OPERATOR) -DUK_LOCAL DUK_EXEC_ALWAYS_INLINE_PERF duk_double_t duk__compute_exp(duk_double_t d1, duk_double_t d2) { - return (duk_double_t) duk_js_arith_pow((double) d1, (double) d2); -} -#endif - -DUK_LOCAL DUK_EXEC_ALWAYS_INLINE_PERF void duk__vm_arith_add(duk_hthread *thr, - duk_tval *tv_x, - duk_tval *tv_y, - duk_small_uint_fast_t idx_z) { - /* - * Addition operator is different from other arithmetic - * operations in that it also provides string concatenation. - * Hence it is implemented separately. - * - * There is a fast path for number addition. Other cases go - * through potentially multiple coercions as described in the - * E5 specification. It may be possible to reduce the number - * of coercions, but this must be done carefully to preserve - * the exact semantics. - * - * E5 Section 11.6.1. - * - * Custom types also have special behavior implemented here. - */ - - duk_double_union du; - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(tv_x != NULL); /* may be reg or const */ - DUK_ASSERT(tv_y != NULL); /* may be reg or const */ - DUK_ASSERT_DISABLE(idx_z >= 0); /* unsigned */ - DUK_ASSERT((duk_uint_t) idx_z < (duk_uint_t) duk_get_top(thr)); - - /* - * Fast paths - */ - -#if defined(DUK_USE_FASTINT) - if (DUK_TVAL_IS_FASTINT(tv_x) && DUK_TVAL_IS_FASTINT(tv_y)) { - duk_int64_t v1, v2, v3; - duk_int32_t v3_hi; - duk_tval *tv_z; - - /* Input values are signed 48-bit so we can detect overflow - * reliably from high bits or just a comparison. - */ - - v1 = DUK_TVAL_GET_FASTINT(tv_x); - v2 = DUK_TVAL_GET_FASTINT(tv_y); - v3 = v1 + v2; - v3_hi = (duk_int32_t) (v3 >> 32); - if (DUK_LIKELY(v3_hi >= DUK_I64_CONSTANT(-0x8000) && v3_hi <= DUK_I64_CONSTANT(0x7fff))) { - tv_z = thr->valstack_bottom + idx_z; - DUK_TVAL_SET_FASTINT_UPDREF(thr, tv_z, v3); /* side effects */ - return; - } else { - /* overflow, fall through */ - ; - } - } -#endif /* DUK_USE_FASTINT */ - - if (DUK_TVAL_IS_NUMBER(tv_x) && DUK_TVAL_IS_NUMBER(tv_y)) { -#if !defined(DUK_USE_EXEC_PREFER_SIZE) - duk_tval *tv_z; -#endif - - du.d = DUK_TVAL_GET_NUMBER(tv_x) + DUK_TVAL_GET_NUMBER(tv_y); -#if defined(DUK_USE_EXEC_PREFER_SIZE) - duk_push_number(thr, du.d); /* will NaN normalize result */ - duk_replace(thr, (duk_idx_t) idx_z); -#else /* DUK_USE_EXEC_PREFER_SIZE */ - DUK_DBLUNION_NORMALIZE_NAN_CHECK(&du); - DUK_ASSERT(DUK_DBLUNION_IS_NORMALIZED(&du)); - tv_z = thr->valstack_bottom + idx_z; - DUK_TVAL_SET_NUMBER_UPDREF(thr, tv_z, du.d); /* side effects */ -#endif /* DUK_USE_EXEC_PREFER_SIZE */ - return; - } - - /* - * Slow path: potentially requires function calls for coercion - */ - - duk_push_tval(thr, tv_x); - duk_push_tval(thr, tv_y); - duk_to_primitive(thr, -2, DUK_HINT_NONE); /* side effects -> don't use tv_x, tv_y after */ - duk_to_primitive(thr, -1, DUK_HINT_NONE); - - /* Since Duktape 2.x plain buffers are treated like ArrayBuffer. */ - if (duk_is_string(thr, -2) || duk_is_string(thr, -1)) { - /* Symbols shouldn't technically be handled here, but should - * go into the default ToNumber() coercion path instead and - * fail there with a TypeError. However, there's a ToString() - * in duk_concat_2() which also fails with TypeError so no - * explicit check is needed. - */ - duk_concat_2(thr); /* [... s1 s2] -> [... s1+s2] */ - } else { - duk_double_t d1, d2; - - d1 = duk_to_number_m2(thr); - d2 = duk_to_number_m1(thr); - DUK_ASSERT(duk_is_number(thr, -2)); - DUK_ASSERT(duk_is_number(thr, -1)); - DUK_ASSERT_DOUBLE_IS_NORMALIZED(d1); - DUK_ASSERT_DOUBLE_IS_NORMALIZED(d2); - - du.d = d1 + d2; - duk_pop_2_unsafe(thr); - duk_push_number(thr, du.d); /* will NaN normalize result */ - } - duk_replace(thr, (duk_idx_t) idx_z); /* side effects */ -} - -DUK_LOCAL DUK_EXEC_ALWAYS_INLINE_PERF void duk__vm_arith_binary_op(duk_hthread *thr, - duk_tval *tv_x, - duk_tval *tv_y, - duk_uint_fast_t idx_z, - duk_small_uint_fast_t opcode) { - /* - * Arithmetic operations other than '+' have number-only semantics - * and are implemented here. The separate switch-case here means a - * "double dispatch" of the arithmetic opcode, but saves code space. - * - * E5 Sections 11.5, 11.5.1, 11.5.2, 11.5.3, 11.6, 11.6.1, 11.6.2, 11.6.3. - */ - - duk_double_t d1, d2; - duk_double_union du; - duk_small_uint_fast_t opcode_shifted; -#if defined(DUK_USE_FASTINT) || !defined(DUK_USE_EXEC_PREFER_SIZE) - duk_tval *tv_z; -#endif - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(tv_x != NULL); /* may be reg or const */ - DUK_ASSERT(tv_y != NULL); /* may be reg or const */ - DUK_ASSERT_DISABLE(idx_z >= 0); /* unsigned */ - DUK_ASSERT((duk_uint_t) idx_z < (duk_uint_t) duk_get_top(thr)); - - opcode_shifted = opcode >> 2; /* Get base opcode without reg/const modifiers. */ - -#if defined(DUK_USE_FASTINT) - if (DUK_TVAL_IS_FASTINT(tv_x) && DUK_TVAL_IS_FASTINT(tv_y)) { - duk_int64_t v1, v2, v3; - duk_int32_t v3_hi; - - v1 = DUK_TVAL_GET_FASTINT(tv_x); - v2 = DUK_TVAL_GET_FASTINT(tv_y); - - switch (opcode_shifted) { - case DUK_OP_SUB >> 2: { - v3 = v1 - v2; - break; - } - case DUK_OP_MUL >> 2: { - /* Must ensure result is 64-bit (no overflow); a - * simple and sufficient fast path is to allow only - * 32-bit inputs. Avoid zero inputs to avoid - * negative zero issues (-1 * 0 = -0, for instance). - */ - if (v1 >= DUK_I64_CONSTANT(-0x80000000) && v1 <= DUK_I64_CONSTANT(0x7fffffff) && v1 != 0 && - v2 >= DUK_I64_CONSTANT(-0x80000000) && v2 <= DUK_I64_CONSTANT(0x7fffffff) && v2 != 0) { - v3 = v1 * v2; - } else { - goto skip_fastint; - } - break; - } - case DUK_OP_DIV >> 2: { - /* Don't allow a zero divisor. Fast path check by - * "verifying" with multiplication. Also avoid zero - * dividend to avoid negative zero issues (0 / -1 = -0 - * for instance). - */ - if (v1 == 0 || v2 == 0) { - goto skip_fastint; - } - v3 = v1 / v2; - if (v3 * v2 != v1) { - goto skip_fastint; - } - break; - } - case DUK_OP_MOD >> 2: { - /* Don't allow a zero divisor. Restrict both v1 and - * v2 to positive values to avoid compiler specific - * behavior. - */ - if (v1 < 1 || v2 < 1) { - goto skip_fastint; - } - v3 = v1 % v2; - DUK_ASSERT(v3 >= 0); - DUK_ASSERT(v3 < v2); - DUK_ASSERT(v1 - (v1 / v2) * v2 == v3); - break; - } - default: { - /* Possible with DUK_OP_EXP. */ - goto skip_fastint; - } - } - - v3_hi = (duk_int32_t) (v3 >> 32); - if (DUK_LIKELY(v3_hi >= DUK_I64_CONSTANT(-0x8000) && v3_hi <= DUK_I64_CONSTANT(0x7fff))) { - tv_z = thr->valstack_bottom + idx_z; - DUK_TVAL_SET_FASTINT_UPDREF(thr, tv_z, v3); /* side effects */ - return; - } - /* fall through if overflow etc */ - } -skip_fastint: -#endif /* DUK_USE_FASTINT */ - - if (DUK_TVAL_IS_NUMBER(tv_x) && DUK_TVAL_IS_NUMBER(tv_y)) { - /* fast path */ - d1 = DUK_TVAL_GET_NUMBER(tv_x); - d2 = DUK_TVAL_GET_NUMBER(tv_y); - } else { - duk_push_tval(thr, tv_x); - duk_push_tval(thr, tv_y); - d1 = duk_to_number_m2(thr); /* side effects */ - d2 = duk_to_number_m1(thr); - DUK_ASSERT(duk_is_number(thr, -2)); - DUK_ASSERT(duk_is_number(thr, -1)); - DUK_ASSERT_DOUBLE_IS_NORMALIZED(d1); - DUK_ASSERT_DOUBLE_IS_NORMALIZED(d2); - duk_pop_2_unsafe(thr); - } - - switch (opcode_shifted) { - case DUK_OP_SUB >> 2: { - du.d = d1 - d2; - break; - } - case DUK_OP_MUL >> 2: { - du.d = d1 * d2; - break; - } - case DUK_OP_DIV >> 2: { - /* Division-by-zero is undefined behavior, so - * rely on a helper. - */ - du.d = duk_double_div(d1, d2); - break; - } - case DUK_OP_MOD >> 2: { - du.d = duk__compute_mod(d1, d2); - break; - } -#if defined(DUK_USE_ES7_EXP_OPERATOR) - case DUK_OP_EXP >> 2: { - du.d = duk__compute_exp(d1, d2); - break; - } -#endif - default: { - DUK_UNREACHABLE(); - du.d = DUK_DOUBLE_NAN; /* should not happen */ - break; - } - } - -#if defined(DUK_USE_EXEC_PREFER_SIZE) - duk_push_number(thr, du.d); /* will NaN normalize result */ - duk_replace(thr, (duk_idx_t) idx_z); -#else /* DUK_USE_EXEC_PREFER_SIZE */ - /* important to use normalized NaN with 8-byte tagged types */ - DUK_DBLUNION_NORMALIZE_NAN_CHECK(&du); - DUK_ASSERT(DUK_DBLUNION_IS_NORMALIZED(&du)); - tv_z = thr->valstack_bottom + idx_z; - DUK_TVAL_SET_NUMBER_UPDREF(thr, tv_z, du.d); /* side effects */ -#endif /* DUK_USE_EXEC_PREFER_SIZE */ -} - -DUK_LOCAL DUK_EXEC_ALWAYS_INLINE_PERF void duk__vm_bitwise_binary_op(duk_hthread *thr, - duk_tval *tv_x, - duk_tval *tv_y, - duk_small_uint_fast_t idx_z, - duk_small_uint_fast_t opcode) { - /* - * Binary bitwise operations use different coercions (ToInt32, ToUint32) - * depending on the operation. We coerce the arguments first using - * ToInt32(), and then cast to an 32-bit value if necessary. Note that - * such casts must be correct even if there is no native 32-bit type - * (e.g., duk_int32_t and duk_uint32_t are 64-bit). - * - * E5 Sections 11.10, 11.7.1, 11.7.2, 11.7.3 - */ - - duk_int32_t i1, i2, i3; - duk_uint32_t u1, u2, u3; -#if defined(DUK_USE_FASTINT) - duk_int64_t fi3; -#else - duk_double_t d3; -#endif - duk_small_uint_fast_t opcode_shifted; -#if defined(DUK_USE_FASTINT) || !defined(DUK_USE_EXEC_PREFER_SIZE) - duk_tval *tv_z; -#endif - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(tv_x != NULL); /* may be reg or const */ - DUK_ASSERT(tv_y != NULL); /* may be reg or const */ - DUK_ASSERT_DISABLE(idx_z >= 0); /* unsigned */ - DUK_ASSERT((duk_uint_t) idx_z < (duk_uint_t) duk_get_top(thr)); - - opcode_shifted = opcode >> 2; /* Get base opcode without reg/const modifiers. */ - -#if defined(DUK_USE_FASTINT) - if (DUK_TVAL_IS_FASTINT(tv_x) && DUK_TVAL_IS_FASTINT(tv_y)) { - i1 = (duk_int32_t) DUK_TVAL_GET_FASTINT_I32(tv_x); - i2 = (duk_int32_t) DUK_TVAL_GET_FASTINT_I32(tv_y); - } else -#endif /* DUK_USE_FASTINT */ - { - duk_push_tval(thr, tv_x); - duk_push_tval(thr, tv_y); - i1 = duk_to_int32(thr, -2); - i2 = duk_to_int32(thr, -1); - duk_pop_2_unsafe(thr); - } - - switch (opcode_shifted) { - case DUK_OP_BAND >> 2: { - i3 = i1 & i2; - break; - } - case DUK_OP_BOR >> 2: { - i3 = i1 | i2; - break; - } - case DUK_OP_BXOR >> 2: { - i3 = i1 ^ i2; - break; - } - case DUK_OP_BASL >> 2: { - /* Signed shift, named "arithmetic" (asl) because the result - * is signed, e.g. 4294967295 << 1 -> -2. Note that result - * must be masked. - */ - - u2 = ((duk_uint32_t) i2) & 0xffffffffUL; - i3 = (duk_int32_t) (((duk_uint32_t) i1) << (u2 & 0x1fUL)); /* E5 Section 11.7.1, steps 7 and 8 */ - i3 = i3 & ((duk_int32_t) 0xffffffffUL); /* Note: left shift, should mask */ - break; - } - case DUK_OP_BASR >> 2: { - /* signed shift */ - - u2 = ((duk_uint32_t) i2) & 0xffffffffUL; - i3 = i1 >> (u2 & 0x1fUL); /* E5 Section 11.7.2, steps 7 and 8 */ - break; - } - case DUK_OP_BLSR >> 2: { - /* unsigned shift */ - - u1 = ((duk_uint32_t) i1) & 0xffffffffUL; - u2 = ((duk_uint32_t) i2) & 0xffffffffUL; - - /* special result value handling */ - u3 = u1 >> (u2 & 0x1fUL); /* E5 Section 11.7.2, steps 7 and 8 */ -#if defined(DUK_USE_FASTINT) - fi3 = (duk_int64_t) u3; - goto fastint_result_set; -#else - d3 = (duk_double_t) u3; - goto result_set; -#endif - } - default: { - DUK_UNREACHABLE(); - i3 = 0; /* should not happen */ - break; - } - } - -#if defined(DUK_USE_FASTINT) - /* Result is always fastint compatible. */ - /* XXX: Set 32-bit result (but must then handle signed and - * unsigned results separately). - */ - fi3 = (duk_int64_t) i3; - -fastint_result_set: - tv_z = thr->valstack_bottom + idx_z; - DUK_TVAL_SET_FASTINT_UPDREF(thr, tv_z, fi3); /* side effects */ -#else /* DUK_USE_FASTINT */ - d3 = (duk_double_t) i3; - -result_set: - DUK_ASSERT(!DUK_ISNAN(d3)); /* 'd3' is never NaN, so no need to normalize */ - DUK_ASSERT_DOUBLE_IS_NORMALIZED(d3); /* always normalized */ - -#if defined(DUK_USE_EXEC_PREFER_SIZE) - duk_push_number(thr, d3); /* would NaN normalize result, but unnecessary */ - duk_replace(thr, (duk_idx_t) idx_z); -#else /* DUK_USE_EXEC_PREFER_SIZE */ - tv_z = thr->valstack_bottom + idx_z; - DUK_TVAL_SET_NUMBER_UPDREF(thr, tv_z, d3); /* side effects */ -#endif /* DUK_USE_EXEC_PREFER_SIZE */ -#endif /* DUK_USE_FASTINT */ -} - -/* In-place unary operation. */ -DUK_LOCAL DUK_EXEC_ALWAYS_INLINE_PERF void duk__vm_arith_unary_op(duk_hthread *thr, - duk_uint_fast_t idx_src, - duk_uint_fast_t idx_dst, - duk_small_uint_fast_t opcode) { - /* - * Arithmetic operations other than '+' have number-only semantics - * and are implemented here. The separate switch-case here means a - * "double dispatch" of the arithmetic opcode, but saves code space. - * - * E5 Sections 11.5, 11.5.1, 11.5.2, 11.5.3, 11.6, 11.6.1, 11.6.2, 11.6.3. - */ - - duk_tval *tv; - duk_double_t d1; - duk_double_union du; - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(opcode == DUK_OP_UNM || opcode == DUK_OP_UNP); - DUK_ASSERT_DISABLE(idx_src >= 0); - DUK_ASSERT_DISABLE(idx_dst >= 0); - - tv = DUK_GET_TVAL_POSIDX(thr, (duk_idx_t) idx_src); - -#if defined(DUK_USE_FASTINT) - if (DUK_TVAL_IS_FASTINT(tv)) { - duk_int64_t v1, v2; - - v1 = DUK_TVAL_GET_FASTINT(tv); - if (opcode == DUK_OP_UNM) { - /* The smallest fastint is no longer 48-bit when - * negated. Positive zero becames negative zero - * (cannot be represented) when negated. - */ - if (DUK_LIKELY(v1 != DUK_FASTINT_MIN && v1 != 0)) { - v2 = -v1; - tv = DUK_GET_TVAL_POSIDX(thr, (duk_idx_t) idx_dst); - DUK_TVAL_SET_FASTINT_UPDREF(thr, tv, v2); - return; - } - } else { - /* ToNumber() for a fastint is a no-op. */ - DUK_ASSERT(opcode == DUK_OP_UNP); - v2 = v1; - tv = DUK_GET_TVAL_POSIDX(thr, (duk_idx_t) idx_dst); - DUK_TVAL_SET_FASTINT_UPDREF(thr, tv, v2); - return; - } - /* fall through if overflow etc */ - } -#endif /* DUK_USE_FASTINT */ - - if (DUK_TVAL_IS_NUMBER(tv)) { - d1 = DUK_TVAL_GET_NUMBER(tv); - } else { - d1 = duk_to_number_tval(thr, tv); /* side effects */ - } - - if (opcode == DUK_OP_UNP) { - /* ToNumber() for a double is a no-op, but unary plus is - * used to force a fastint check so do that here. - */ - du.d = d1; - DUK_ASSERT(DUK_DBLUNION_IS_NORMALIZED(&du)); -#if defined(DUK_USE_FASTINT) - tv = DUK_GET_TVAL_POSIDX(thr, (duk_idx_t) idx_dst); - DUK_TVAL_SET_NUMBER_CHKFAST_UPDREF(thr, tv, du.d); /* always 'fast', i.e. inlined */ - return; -#endif - } else { - DUK_ASSERT(opcode == DUK_OP_UNM); - du.d = -d1; - DUK_DBLUNION_NORMALIZE_NAN_CHECK(&du); /* mandatory if du.d is a NaN */ - DUK_ASSERT(DUK_DBLUNION_IS_NORMALIZED(&du)); - } - - /* XXX: size optimize: push+replace? */ - tv = DUK_GET_TVAL_POSIDX(thr, (duk_idx_t) idx_dst); - DUK_TVAL_SET_NUMBER_UPDREF(thr, tv, du.d); -} - -DUK_LOCAL DUK_EXEC_ALWAYS_INLINE_PERF void duk__vm_bitwise_not(duk_hthread *thr, duk_uint_fast_t idx_src, duk_uint_fast_t idx_dst) { - /* - * E5 Section 11.4.8 - */ - - duk_tval *tv; - duk_int32_t i1, i2; - - DUK_ASSERT(thr != NULL); - DUK_ASSERT_DISABLE(idx_src >= 0); - DUK_ASSERT_DISABLE(idx_dst >= 0); - DUK_ASSERT((duk_uint_t) idx_src < (duk_uint_t) duk_get_top(thr)); - DUK_ASSERT((duk_uint_t) idx_dst < (duk_uint_t) duk_get_top(thr)); - - tv = DUK_GET_TVAL_POSIDX(thr, (duk_idx_t) idx_src); - -#if defined(DUK_USE_FASTINT) - if (DUK_TVAL_IS_FASTINT(tv)) { - i1 = (duk_int32_t) DUK_TVAL_GET_FASTINT_I32(tv); - } else -#endif /* DUK_USE_FASTINT */ - { - duk_push_tval(thr, tv); - i1 = duk_to_int32(thr, -1); /* side effects */ - duk_pop_unsafe(thr); - } - - /* Result is always fastint compatible. */ - i2 = ~i1; - tv = DUK_GET_TVAL_POSIDX(thr, (duk_idx_t) idx_dst); - DUK_TVAL_SET_I32_UPDREF(thr, tv, i2); /* side effects */ -} - -DUK_LOCAL DUK_EXEC_ALWAYS_INLINE_PERF void duk__vm_logical_not(duk_hthread *thr, duk_uint_fast_t idx_src, duk_uint_fast_t idx_dst) { - /* - * E5 Section 11.4.9 - */ - - duk_tval *tv; - duk_bool_t res; - - DUK_ASSERT(thr != NULL); - DUK_ASSERT_DISABLE(idx_src >= 0); - DUK_ASSERT_DISABLE(idx_dst >= 0); - DUK_ASSERT((duk_uint_t) idx_src < (duk_uint_t) duk_get_top(thr)); - DUK_ASSERT((duk_uint_t) idx_dst < (duk_uint_t) duk_get_top(thr)); - - /* ToBoolean() does not require any operations with side effects so - * we can do it efficiently. For footprint it would be better to use - * duk_js_toboolean() and then push+replace to the result slot. - */ - tv = DUK_GET_TVAL_POSIDX(thr, (duk_idx_t) idx_src); - res = duk_js_toboolean(tv); /* does not modify 'tv' */ - DUK_ASSERT(res == 0 || res == 1); - res ^= 1; - tv = DUK_GET_TVAL_POSIDX(thr, (duk_idx_t) idx_dst); - /* XXX: size optimize: push+replace? */ - DUK_TVAL_SET_BOOLEAN_UPDREF(thr, tv, res); /* side effects */ -} - -/* XXX: size optimized variant */ -DUK_LOCAL DUK_EXEC_ALWAYS_INLINE_PERF void duk__prepost_incdec_reg_helper(duk_hthread *thr, - duk_tval *tv_dst, - duk_tval *tv_src, - duk_small_uint_t op) { - duk_double_t x, y, z; - - /* Two lowest bits of opcode are used to distinguish - * variants. Bit 0 = inc(0)/dec(1), bit 1 = pre(0)/post(1). - */ - DUK_ASSERT((DUK_OP_PREINCR & 0x03) == 0x00); - DUK_ASSERT((DUK_OP_PREDECR & 0x03) == 0x01); - DUK_ASSERT((DUK_OP_POSTINCR & 0x03) == 0x02); - DUK_ASSERT((DUK_OP_POSTDECR & 0x03) == 0x03); - -#if defined(DUK_USE_FASTINT) - if (DUK_TVAL_IS_FASTINT(tv_src)) { - duk_int64_t x_fi, y_fi, z_fi; - x_fi = DUK_TVAL_GET_FASTINT(tv_src); - if (op & 0x01) { - if (DUK_UNLIKELY(x_fi == DUK_FASTINT_MIN)) { - goto skip_fastint; - } - y_fi = x_fi - 1; - } else { - if (DUK_UNLIKELY(x_fi == DUK_FASTINT_MAX)) { - goto skip_fastint; - } - y_fi = x_fi + 1; - } - - DUK_TVAL_SET_FASTINT(tv_src, y_fi); /* no need for refcount update */ - - z_fi = (op & 0x02) ? x_fi : y_fi; - DUK_TVAL_SET_FASTINT_UPDREF(thr, tv_dst, z_fi); /* side effects */ - return; - } -skip_fastint: -#endif - if (DUK_TVAL_IS_NUMBER(tv_src)) { - /* Fast path for the case where the register - * is a number (e.g. loop counter). - */ - - x = DUK_TVAL_GET_NUMBER(tv_src); - if (op & 0x01) { - y = x - 1.0; - } else { - y = x + 1.0; - } - - DUK_TVAL_SET_NUMBER(tv_src, y); /* no need for refcount update */ - } else { - /* Preserve duk_tval pointer(s) across a potential valstack - * resize by converting them into offsets temporarily. - */ - duk_idx_t bc; - duk_size_t off_dst; - - off_dst = (duk_size_t) ((duk_uint8_t *) tv_dst - (duk_uint8_t *) thr->valstack_bottom); - bc = (duk_idx_t) (tv_src - thr->valstack_bottom); /* XXX: pass index explicitly? */ - tv_src = NULL; /* no longer referenced */ - - x = duk_to_number(thr, bc); - if (op & 0x01) { - y = x - 1.0; - } else { - y = x + 1.0; - } - - duk_push_number(thr, y); - duk_replace(thr, bc); - - tv_dst = (duk_tval *) (void *) (((duk_uint8_t *) thr->valstack_bottom) + off_dst); - } - - z = (op & 0x02) ? x : y; - DUK_TVAL_SET_NUMBER_UPDREF(thr, tv_dst, z); /* side effects */ -} - -DUK_LOCAL DUK_EXEC_ALWAYS_INLINE_PERF void duk__prepost_incdec_var_helper(duk_hthread *thr, - duk_small_uint_t idx_dst, - duk_tval *tv_id, - duk_small_uint_t op, - duk_small_uint_t is_strict) { - duk_activation *act; - duk_double_t x, y; - duk_hstring *name; - - /* XXX: The pre/post inc/dec for an identifier lookup is - * missing the important fast path where the identifier - * has a storage location e.g. in a scope object so that - * it can be updated in-place. In particular, the case - * where the identifier has a storage location AND the - * previous value is a number should be optimized because - * it's side effect free. - */ - - /* Two lowest bits of opcode are used to distinguish - * variants. Bit 0 = inc(0)/dec(1), bit 1 = pre(0)/post(1). - */ - DUK_ASSERT((DUK_OP_PREINCV & 0x03) == 0x00); - DUK_ASSERT((DUK_OP_PREDECV & 0x03) == 0x01); - DUK_ASSERT((DUK_OP_POSTINCV & 0x03) == 0x02); - DUK_ASSERT((DUK_OP_POSTDECV & 0x03) == 0x03); - - DUK_ASSERT(DUK_TVAL_IS_STRING(tv_id)); - name = DUK_TVAL_GET_STRING(tv_id); - DUK_ASSERT(name != NULL); - act = thr->callstack_curr; - (void) duk_js_getvar_activation(thr, act, name, 1 /*throw*/); /* -> [ ... val this ] */ - - /* XXX: Fastint fast path would be useful here. Also fastints - * now lose their fastint status in current handling which is - * not intuitive. - */ - - x = duk_to_number_m2(thr); - if (op & 0x01) { - y = x - 1.0; - } else { - y = x + 1.0; - } - - /* [... x this] */ - - if (op & 0x02) { - duk_push_number(thr, y); /* -> [ ... x this y ] */ - DUK_ASSERT(act == thr->callstack_curr); - duk_js_putvar_activation(thr, act, name, DUK_GET_TVAL_NEGIDX(thr, -1), is_strict); - duk_pop_2_unsafe(thr); /* -> [ ... x ] */ - } else { - duk_pop_2_unsafe(thr); /* -> [ ... ] */ - duk_push_number(thr, y); /* -> [ ... y ] */ - DUK_ASSERT(act == thr->callstack_curr); - duk_js_putvar_activation(thr, act, name, DUK_GET_TVAL_NEGIDX(thr, -1), is_strict); - } - -#if defined(DUK_USE_EXEC_PREFER_SIZE) - duk_replace(thr, (duk_idx_t) idx_dst); -#else /* DUK_USE_EXEC_PREFER_SIZE */ - DUK__REPLACE_TO_TVPTR(thr, DUK_GET_TVAL_POSIDX(thr, (duk_idx_t) idx_dst)); -#endif /* DUK_USE_EXEC_PREFER_SIZE */ -} - -/* - * Longjmp and other control flow transfer for the bytecode executor. - * - * The longjmp handler can handle all longjmp types: error, yield, and - * resume (pseudotypes are never actually thrown). - * - * Error policy for longjmp: should not ordinarily throw errors; if errors - * occur (e.g. due to out-of-memory) they bubble outwards rather than being - * handled recursively. - */ - -#define DUK__LONGJMP_RESTART 0 /* state updated, restart bytecode execution */ -#define DUK__LONGJMP_RETHROW 1 /* exit bytecode executor by rethrowing an error to caller */ - -#define DUK__RETHAND_RESTART 0 /* state updated, restart bytecode execution */ -#define DUK__RETHAND_FINISHED 1 /* exit bytecode execution with return value */ - -/* XXX: optimize reconfig valstack operations so that resize, clamp, and setting - * top are combined into one pass. - */ - -/* Reconfigure value stack for return to an ECMAScript function at - * callstack top (caller unwinds). - */ -DUK_LOCAL void duk__reconfig_valstack_ecma_return(duk_hthread *thr) { - duk_activation *act; - duk_hcompfunc *h_func; - duk_idx_t clamp_top; - - DUK_ASSERT(thr != NULL); - act = thr->callstack_curr; - DUK_ASSERT(act != NULL); - DUK_ASSERT(DUK_ACT_GET_FUNC(act) != NULL); - DUK_ASSERT(DUK_HOBJECT_IS_COMPFUNC(DUK_ACT_GET_FUNC(act))); - - /* Clamp so that values at 'clamp_top' and above are wiped and won't - * retain reachable garbage. Then extend to 'nregs' because we're - * returning to an ECMAScript function. - */ - - h_func = (duk_hcompfunc *) DUK_ACT_GET_FUNC(act); - - thr->valstack_bottom = (duk_tval *) (void *) ((duk_uint8_t *) thr->valstack + act->bottom_byteoff); - DUK_ASSERT(act->retval_byteoff >= act->bottom_byteoff); - clamp_top = - (duk_idx_t) ((act->retval_byteoff - act->bottom_byteoff + sizeof(duk_tval)) / sizeof(duk_tval)); /* +1 = one retval */ - duk_set_top_and_wipe(thr, h_func->nregs, clamp_top); - - DUK_ASSERT((duk_uint8_t *) thr->valstack_end >= (duk_uint8_t *) thr->valstack + act->reserve_byteoff); - thr->valstack_end = (duk_tval *) (void *) ((duk_uint8_t *) thr->valstack + act->reserve_byteoff); - - /* XXX: a best effort shrink check would be OK here */ -} - -/* Reconfigure value stack for an ECMAScript catcher. Use topmost catcher - * in 'act'. - */ -DUK_LOCAL void duk__reconfig_valstack_ecma_catcher(duk_hthread *thr, duk_activation *act) { - duk_catcher *cat; - duk_hcompfunc *h_func; - duk_size_t idx_bottom; - duk_idx_t clamp_top; - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(act != NULL); - DUK_ASSERT(DUK_ACT_GET_FUNC(act) != NULL); - DUK_ASSERT(DUK_HOBJECT_IS_COMPFUNC(DUK_ACT_GET_FUNC(act))); - cat = act->cat; - DUK_ASSERT(cat != NULL); - - h_func = (duk_hcompfunc *) DUK_ACT_GET_FUNC(act); - - thr->valstack_bottom = (duk_tval *) (void *) ((duk_uint8_t *) thr->valstack + act->bottom_byteoff); - idx_bottom = (duk_size_t) (thr->valstack_bottom - thr->valstack); - DUK_ASSERT(cat->idx_base >= idx_bottom); - clamp_top = (duk_idx_t) (cat->idx_base - idx_bottom + 2); /* +2 = catcher value, catcher lj_type */ - duk_set_top_and_wipe(thr, h_func->nregs, clamp_top); - - DUK_ASSERT((duk_uint8_t *) thr->valstack_end >= (duk_uint8_t *) thr->valstack + act->reserve_byteoff); - thr->valstack_end = (duk_tval *) (void *) ((duk_uint8_t *) thr->valstack + act->reserve_byteoff); - - /* XXX: a best effort shrink check would be OK here */ -} - -/* Set catcher regs: idx_base+0 = value, idx_base+1 = lj_type. - * No side effects. - */ -DUK_LOCAL void duk__set_catcher_regs_norz(duk_hthread *thr, duk_catcher *cat, duk_tval *tv_val_unstable, duk_small_uint_t lj_type) { - duk_tval *tv1; - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(tv_val_unstable != NULL); - - tv1 = thr->valstack + cat->idx_base; - DUK_ASSERT(tv1 < thr->valstack_top); - DUK_TVAL_SET_TVAL_UPDREF_NORZ(thr, tv1, tv_val_unstable); - - tv1++; - DUK_ASSERT(tv1 == thr->valstack + cat->idx_base + 1); - DUK_ASSERT(tv1 < thr->valstack_top); - DUK_TVAL_SET_U32_UPDREF_NORZ(thr, tv1, (duk_uint32_t) lj_type); -} - -DUK_LOCAL void duk__handle_catch_part1(duk_hthread *thr, - duk_tval *tv_val_unstable, - duk_small_uint_t lj_type, - volatile duk_bool_t *out_delayed_catch_setup) { - duk_activation *act; - duk_catcher *cat; - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(tv_val_unstable != NULL); - - act = thr->callstack_curr; - DUK_ASSERT(act != NULL); - DUK_DD(DUK_DDPRINT("handle catch, part 1; act=%!A, cat=%!C", act, act->cat)); - - DUK_ASSERT(act->cat != NULL); - DUK_ASSERT(DUK_CAT_GET_TYPE(act->cat) == DUK_CAT_TYPE_TCF); - - /* The part1/part2 split could also be made here at the very top - * of catch handling. Value stack would be reconfigured inside - * part2's protection. Value stack reconfiguration should be free - * of allocs, however. - */ - - duk__set_catcher_regs_norz(thr, act->cat, tv_val_unstable, lj_type); - - DUK_ASSERT(thr->callstack_top >= 1); - DUK_ASSERT(thr->callstack_curr != NULL); - DUK_ASSERT(DUK_ACT_GET_FUNC(thr->callstack_curr) != NULL); - DUK_ASSERT(DUK_HOBJECT_IS_COMPFUNC(DUK_ACT_GET_FUNC(thr->callstack_curr))); - - DUK_ASSERT(thr->callstack_top >= 1); - DUK_ASSERT(act == thr->callstack_curr); - DUK_ASSERT(act != NULL); - duk__reconfig_valstack_ecma_catcher(thr, act); - - DUK_ASSERT(thr->callstack_top >= 1); - DUK_ASSERT(act == thr->callstack_curr); - DUK_ASSERT(act != NULL); - cat = act->cat; - DUK_ASSERT(cat != NULL); - - act->curr_pc = cat->pc_base + 0; /* +0 = catch */ - - /* - * If the catch block has an automatic catch variable binding, - * we need to create a lexical environment for it which requires - * allocations. Move out of "error handling state" before the - * allocations to avoid e.g. out-of-memory errors (leading to - * GH-2022 or similar). - */ - - if (DUK_CAT_HAS_CATCH_BINDING_ENABLED(cat)) { - DUK_DDD(DUK_DDDPRINT("catcher has an automatic catch binding, handle in part 2")); - *out_delayed_catch_setup = 1; - } else { - DUK_DDD(DUK_DDDPRINT("catcher has no catch binding")); - } - - DUK_CAT_CLEAR_CATCH_ENABLED(cat); -} - -DUK_LOCAL void duk__handle_catch_part2(duk_hthread *thr) { - duk_activation *act; - duk_catcher *cat; - duk_hdecenv *new_env; - - DUK_ASSERT(thr != NULL); - - act = thr->callstack_curr; - DUK_ASSERT(act != NULL); - DUK_DD(DUK_DDPRINT("handle catch, part 2; act=%!A, cat=%!C", act, act->cat)); - - DUK_ASSERT(act->cat != NULL); - cat = act->cat; - DUK_ASSERT(cat != NULL); - DUK_ASSERT(DUK_CAT_GET_TYPE(cat) == DUK_CAT_TYPE_TCF); - DUK_ASSERT(DUK_CAT_HAS_CATCH_BINDING_ENABLED(cat)); - DUK_ASSERT(thr->valstack + cat->idx_base < thr->valstack_top); - - /* - * Create lexical environment for the catch clause, containing - * a binding for the caught value. - * - * The binding is mutable (= writable) but not deletable. - * Step 4 for the catch production in E5 Section 12.14; - * no value is given for CreateMutableBinding 'D' argument, - * which implies the binding is not deletable. - */ - - if (act->lex_env == NULL) { - DUK_ASSERT(act->var_env == NULL); - DUK_DDD(DUK_DDDPRINT("delayed environment initialization")); - - duk_js_init_activation_environment_records_delayed(thr, act); - DUK_ASSERT(act == thr->callstack_curr); - DUK_ASSERT(act != NULL); - } - DUK_ASSERT(act->lex_env != NULL); - DUK_ASSERT(act->var_env != NULL); - DUK_ASSERT(DUK_ACT_GET_FUNC(act) != NULL); - - new_env = duk_hdecenv_alloc(thr, DUK_HOBJECT_FLAG_EXTENSIBLE | DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_DECENV)); - DUK_ASSERT(new_env != NULL); - duk_push_hobject(thr, (duk_hobject *) new_env); - DUK_ASSERT(DUK_HOBJECT_GET_PROTOTYPE(thr->heap, (duk_hobject *) new_env) == NULL); - DUK_DDD(DUK_DDDPRINT("new_env allocated: %!iO", (duk_heaphdr *) new_env)); - - /* Note: currently the catch binding is handled without a register - * binding because we don't support dynamic register bindings (they - * must be fixed for an entire function). So, there is no need to - * record regbases etc. - */ - - /* [ ...env ] */ - - DUK_ASSERT(cat->h_varname != NULL); - duk_push_hstring(thr, cat->h_varname); - DUK_ASSERT(thr->valstack + cat->idx_base < thr->valstack_top); - duk_push_tval(thr, thr->valstack + cat->idx_base); - duk_xdef_prop(thr, -3, DUK_PROPDESC_FLAGS_W); /* writable, not configurable */ - - /* [ ... env ] */ - - DUK_ASSERT(act == thr->callstack_curr); - DUK_ASSERT(act != NULL); - DUK_HOBJECT_SET_PROTOTYPE(thr->heap, (duk_hobject *) new_env, act->lex_env); - act->lex_env = (duk_hobject *) new_env; - DUK_HOBJECT_INCREF(thr, (duk_hobject *) new_env); /* reachable through activation */ - /* Net refcount change to act->lex_env is 0: incref for new_env's - * prototype, decref for act->lex_env overwrite. - */ - - DUK_CAT_SET_LEXENV_ACTIVE(cat); - - duk_pop_unsafe(thr); - - DUK_DDD(DUK_DDDPRINT("new_env finished: %!iO", (duk_heaphdr *) new_env)); -} - -DUK_LOCAL void duk__handle_finally(duk_hthread *thr, duk_tval *tv_val_unstable, duk_small_uint_t lj_type) { - duk_activation *act; - duk_catcher *cat; - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(tv_val_unstable != NULL); - - act = thr->callstack_curr; - DUK_ASSERT(act != NULL); - DUK_ASSERT(act->cat != NULL); - DUK_ASSERT(DUK_CAT_GET_TYPE(act->cat) == DUK_CAT_TYPE_TCF); - - duk__set_catcher_regs_norz(thr, act->cat, tv_val_unstable, lj_type); - - DUK_ASSERT(thr->callstack_top >= 1); - DUK_ASSERT(thr->callstack_curr != NULL); - DUK_ASSERT(DUK_ACT_GET_FUNC(thr->callstack_curr) != NULL); - DUK_ASSERT(DUK_HOBJECT_IS_COMPFUNC(DUK_ACT_GET_FUNC(thr->callstack_curr))); - - DUK_ASSERT(thr->callstack_top >= 1); - DUK_ASSERT(act == thr->callstack_curr); - DUK_ASSERT(act != NULL); - duk__reconfig_valstack_ecma_catcher(thr, act); - - DUK_ASSERT(thr->callstack_top >= 1); - DUK_ASSERT(act == thr->callstack_curr); - DUK_ASSERT(act != NULL); - cat = act->cat; - DUK_ASSERT(cat != NULL); - - act->curr_pc = cat->pc_base + 1; /* +1 = finally */ - - DUK_CAT_CLEAR_FINALLY_ENABLED(cat); -} - -DUK_LOCAL void duk__handle_label(duk_hthread *thr, duk_small_uint_t lj_type) { - duk_activation *act; - duk_catcher *cat; - - DUK_ASSERT(thr != NULL); - - DUK_ASSERT(thr->callstack_top >= 1); - act = thr->callstack_curr; - DUK_ASSERT(act != NULL); - DUK_ASSERT(DUK_ACT_GET_FUNC(act) != NULL); - DUK_ASSERT(DUK_HOBJECT_HAS_COMPFUNC(DUK_ACT_GET_FUNC(act))); - - /* +0 = break, +1 = continue */ - cat = act->cat; - DUK_ASSERT(cat != NULL); - DUK_ASSERT(DUK_CAT_GET_TYPE(cat) == DUK_CAT_TYPE_LABEL); - - act->curr_pc = cat->pc_base + (lj_type == DUK_LJ_TYPE_CONTINUE ? 1 : 0); - - /* valstack should not need changes */ -#if defined(DUK_USE_ASSERTIONS) - DUK_ASSERT(thr->callstack_top >= 1); - DUK_ASSERT(act == thr->callstack_curr); - DUK_ASSERT(act != NULL); - DUK_ASSERT((duk_size_t) (thr->valstack_top - thr->valstack_bottom) == - (duk_size_t) ((duk_hcompfunc *) DUK_ACT_GET_FUNC(act))->nregs); -#endif -} - -/* Called for handling both a longjmp() with type DUK_LJ_TYPE_YIELD and - * when a RETURN opcode terminates a thread and yields to the resumer. - * Caller unwinds so that top of callstack is the activation we return to. - */ -#if defined(DUK_USE_COROUTINE_SUPPORT) -DUK_LOCAL void duk__handle_yield(duk_hthread *thr, duk_hthread *resumer, duk_tval *tv_val_unstable) { - duk_activation *act_resumer; - duk_tval *tv1; - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(resumer != NULL); - DUK_ASSERT(tv_val_unstable != NULL); - act_resumer = resumer->callstack_curr; - DUK_ASSERT(act_resumer != NULL); - DUK_ASSERT(DUK_ACT_GET_FUNC(act_resumer) != NULL); - DUK_ASSERT(DUK_HOBJECT_IS_COMPFUNC(DUK_ACT_GET_FUNC(act_resumer))); /* resume caller must be an ECMAScript func */ - - tv1 = (duk_tval *) (void *) ((duk_uint8_t *) resumer->valstack + - act_resumer->retval_byteoff); /* return value from Duktape.Thread.resume() */ - DUK_TVAL_SET_TVAL_UPDREF(thr, tv1, tv_val_unstable); /* side effects */ /* XXX: avoid side effects */ - - duk__reconfig_valstack_ecma_return(resumer); - - /* caller must change active thread, and set thr->resumer to NULL */ -} -#endif /* DUK_USE_COROUTINE_SUPPORT */ - -DUK_LOCAL duk_small_uint_t duk__handle_longjmp(duk_hthread *thr, - duk_activation *entry_act, - volatile duk_bool_t *out_delayed_catch_setup) { - duk_small_uint_t retval = DUK__LONGJMP_RESTART; - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(entry_act != NULL); - - /* 'thr' is the current thread, as no-one resumes except us and we - * switch 'thr' in that case. - */ - DUK_ASSERT(thr == thr->heap->curr_thread); - - /* - * (Re)try handling the longjmp. - * - * A longjmp handler may convert the longjmp to a different type and - * "virtually" rethrow by goto'ing to 'check_longjmp'. Before the goto, - * the following must be updated: - * - the heap 'lj' state - * - 'thr' must reflect the "throwing" thread - */ - -check_longjmp: - - DUK_DD(DUK_DDPRINT("handling longjmp: type=%ld, value1=%!T, value2=%!T, iserror=%ld, top=%ld", - (long) thr->heap->lj.type, - (duk_tval *) &thr->heap->lj.value1, - (duk_tval *) &thr->heap->lj.value2, - (long) thr->heap->lj.iserror, - (long) duk_get_top(thr))); - - switch (thr->heap->lj.type) { -#if defined(DUK_USE_COROUTINE_SUPPORT) - case DUK_LJ_TYPE_RESUME: { - /* - * Note: lj.value1 is 'value', lj.value2 is 'resumee'. - * This differs from YIELD. - */ - - duk_tval *tv; - duk_tval *tv2; - duk_hthread *resumee; - - /* duk_bi_duk_object_yield() and duk_bi_duk_object_resume() ensure all of these are met */ - - DUK_ASSERT(thr->state == DUK_HTHREAD_STATE_RUNNING); /* unchanged by Duktape.Thread.resume() */ - DUK_ASSERT(thr->callstack_top >= 2); /* ECMAScript activation + Duktape.Thread.resume() activation */ - DUK_ASSERT(thr->callstack_curr != NULL); - DUK_ASSERT(thr->callstack_curr->parent != NULL); - DUK_ASSERT(DUK_ACT_GET_FUNC(thr->callstack_curr) != NULL && - DUK_HOBJECT_IS_NATFUNC(DUK_ACT_GET_FUNC(thr->callstack_curr)) && - ((duk_hnatfunc *) DUK_ACT_GET_FUNC(thr->callstack_curr))->func == duk_bi_thread_resume); - - tv = &thr->heap->lj.value2; /* resumee */ - DUK_ASSERT(DUK_TVAL_IS_OBJECT(tv)); - DUK_ASSERT(DUK_TVAL_GET_OBJECT(tv) != NULL); - DUK_ASSERT(DUK_HOBJECT_IS_THREAD(DUK_TVAL_GET_OBJECT(tv))); - resumee = (duk_hthread *) DUK_TVAL_GET_OBJECT(tv); - - DUK_ASSERT(resumee != NULL); - DUK_ASSERT(resumee->resumer == NULL); - DUK_ASSERT(resumee->state == DUK_HTHREAD_STATE_INACTIVE || - resumee->state == DUK_HTHREAD_STATE_YIELDED); /* checked by Duktape.Thread.resume() */ - DUK_ASSERT(resumee->state != DUK_HTHREAD_STATE_YIELDED || - resumee->callstack_top >= 2); /* YIELDED: ECMAScript activation + Duktape.Thread.yield() activation */ - DUK_ASSERT(resumee->state != DUK_HTHREAD_STATE_YIELDED || - (DUK_ACT_GET_FUNC(resumee->callstack_curr) != NULL && - DUK_HOBJECT_IS_NATFUNC(DUK_ACT_GET_FUNC(resumee->callstack_curr)) && - ((duk_hnatfunc *) DUK_ACT_GET_FUNC(resumee->callstack_curr))->func == duk_bi_thread_yield)); - DUK_ASSERT(resumee->state != DUK_HTHREAD_STATE_INACTIVE || - resumee->callstack_top == 0); /* INACTIVE: no activation, single function value on valstack */ - - if (thr->heap->lj.iserror) { - /* - * Throw the error in the resumed thread's context; the - * error value is pushed onto the resumee valstack. - * - * Note: the callstack of the target may empty in this case - * too (i.e. the target thread has never been resumed). The - * value stack will contain the initial function in that case, - * which we simply ignore. - */ - - DUK_ASSERT(resumee->resumer == NULL); - resumee->resumer = thr; - DUK_HTHREAD_INCREF(thr, thr); - resumee->state = DUK_HTHREAD_STATE_RUNNING; - thr->state = DUK_HTHREAD_STATE_RESUMED; - DUK_HEAP_SWITCH_THREAD(thr->heap, resumee); - thr = resumee; - - thr->heap->lj.type = DUK_LJ_TYPE_THROW; - - /* thr->heap->lj.value1 is already the value to throw */ - /* thr->heap->lj.value2 is 'thread', will be wiped out at the end */ - - DUK_ASSERT(thr->heap->lj.iserror); /* already set */ - - DUK_DD(DUK_DDPRINT("-> resume with an error, converted to a throw in the resumee, propagate")); - goto check_longjmp; - } else if (resumee->state == DUK_HTHREAD_STATE_YIELDED) { - /* Unwind previous Duktape.Thread.yield() call. The - * activation remaining must always be an ECMAScript - * call now (yield() accepts calls from ECMAScript - * only). - */ - duk_activation *act_resumee; - - DUK_ASSERT(resumee->callstack_top >= 2); - act_resumee = resumee->callstack_curr; /* Duktape.Thread.yield() */ - DUK_ASSERT(act_resumee != NULL); - act_resumee = act_resumee->parent; /* ECMAScript call site for yield() */ - DUK_ASSERT(act_resumee != NULL); - - tv = (duk_tval *) (void *) ((duk_uint8_t *) resumee->valstack + - act_resumee->retval_byteoff); /* return value from Duktape.Thread.yield() */ - DUK_ASSERT(tv >= resumee->valstack && tv < resumee->valstack_top); - tv2 = &thr->heap->lj.value1; - DUK_TVAL_SET_TVAL_UPDREF(thr, tv, tv2); /* side effects */ /* XXX: avoid side effects */ - - duk_hthread_activation_unwind_norz(resumee); /* unwind to 'yield' caller */ - /* no need to unwind catch stack */ - - duk__reconfig_valstack_ecma_return(resumee); - - DUK_ASSERT(resumee->resumer == NULL); - resumee->resumer = thr; - DUK_HTHREAD_INCREF(thr, thr); - resumee->state = DUK_HTHREAD_STATE_RUNNING; - thr->state = DUK_HTHREAD_STATE_RESUMED; - DUK_HEAP_SWITCH_THREAD(thr->heap, resumee); -#if 0 - thr = resumee; /* not needed, as we exit right away */ -#endif - DUK_DD(DUK_DDPRINT("-> resume with a value, restart execution in resumee")); - retval = DUK__LONGJMP_RESTART; - goto wipe_and_return; - } else { - /* Initial resume call. */ - duk_small_uint_t call_flags; - duk_int_t setup_rc; - - /* resumee: [... initial_func] (currently actually: [initial_func]) */ - - duk_push_undefined(resumee); - tv = &thr->heap->lj.value1; - duk_push_tval(resumee, tv); - - /* resumee: [... initial_func undefined(= this) resume_value ] */ - - call_flags = DUK_CALL_FLAG_ALLOW_ECMATOECMA; /* not tailcall, ecma-to-ecma (assumed to succeed) */ - - setup_rc = duk_handle_call_unprotected_nargs(resumee, 1 /*nargs*/, call_flags); - if (setup_rc == 0) { - /* This shouldn't happen; Duktape.Thread.resume() - * should make sure of that. If it does happen - * this internal error will propagate out of the - * executor which can be quite misleading. - */ - DUK_ERROR_INTERNAL(thr); - DUK_WO_NORETURN(return 0;); - } - - DUK_ASSERT(resumee->resumer == NULL); - resumee->resumer = thr; - DUK_HTHREAD_INCREF(thr, thr); - resumee->state = DUK_HTHREAD_STATE_RUNNING; - thr->state = DUK_HTHREAD_STATE_RESUMED; - DUK_HEAP_SWITCH_THREAD(thr->heap, resumee); -#if 0 - thr = resumee; /* not needed, as we exit right away */ -#endif - DUK_DD(DUK_DDPRINT("-> resume with a value, restart execution in resumee")); - retval = DUK__LONGJMP_RESTART; - goto wipe_and_return; - } - DUK_UNREACHABLE(); - break; /* never here */ - } - - case DUK_LJ_TYPE_YIELD: { - /* - * Currently only allowed only if yielding thread has only - * ECMAScript activations (except for the Duktape.Thread.yield() - * call at the callstack top) and none of them constructor - * calls. - * - * This excludes the 'entry' thread which will always have - * a preventcount > 0. - */ - - duk_hthread *resumer; - - /* duk_bi_duk_object_yield() and duk_bi_duk_object_resume() ensure all of these are met */ - -#if 0 /* entry_thread not available for assert */ - DUK_ASSERT(thr != entry_thread); /* Duktape.Thread.yield() should prevent */ -#endif - DUK_ASSERT(thr->state == DUK_HTHREAD_STATE_RUNNING); /* unchanged from Duktape.Thread.yield() */ - DUK_ASSERT(thr->callstack_top >= 2); /* ECMAScript activation + Duktape.Thread.yield() activation */ - DUK_ASSERT(thr->callstack_curr != NULL); - DUK_ASSERT(thr->callstack_curr->parent != NULL); - DUK_ASSERT(DUK_ACT_GET_FUNC(thr->callstack_curr) != NULL && - DUK_HOBJECT_IS_NATFUNC(DUK_ACT_GET_FUNC(thr->callstack_curr)) && - ((duk_hnatfunc *) DUK_ACT_GET_FUNC(thr->callstack_curr))->func == duk_bi_thread_yield); - DUK_ASSERT(DUK_ACT_GET_FUNC(thr->callstack_curr->parent) != NULL && - DUK_HOBJECT_IS_COMPFUNC(DUK_ACT_GET_FUNC(thr->callstack_curr->parent))); /* an ECMAScript function */ - - resumer = thr->resumer; - - DUK_ASSERT(resumer != NULL); - DUK_ASSERT(resumer->state == DUK_HTHREAD_STATE_RESUMED); /* written by a previous RESUME handling */ - DUK_ASSERT(resumer->callstack_top >= 2); /* ECMAScript activation + Duktape.Thread.resume() activation */ - DUK_ASSERT(resumer->callstack_curr != NULL); - DUK_ASSERT(resumer->callstack_curr->parent != NULL); - DUK_ASSERT(DUK_ACT_GET_FUNC(resumer->callstack_curr) != NULL && - DUK_HOBJECT_IS_NATFUNC(DUK_ACT_GET_FUNC(resumer->callstack_curr)) && - ((duk_hnatfunc *) DUK_ACT_GET_FUNC(resumer->callstack_curr))->func == duk_bi_thread_resume); - DUK_ASSERT(DUK_ACT_GET_FUNC(resumer->callstack_curr->parent) != NULL && - DUK_HOBJECT_IS_COMPFUNC(DUK_ACT_GET_FUNC(resumer->callstack_curr->parent))); /* an ECMAScript function */ - - if (thr->heap->lj.iserror) { - thr->state = DUK_HTHREAD_STATE_YIELDED; - thr->resumer = NULL; - DUK_HTHREAD_DECREF_NORZ(thr, resumer); - resumer->state = DUK_HTHREAD_STATE_RUNNING; - DUK_HEAP_SWITCH_THREAD(thr->heap, resumer); - thr = resumer; - - thr->heap->lj.type = DUK_LJ_TYPE_THROW; - /* lj.value1 is already set */ - DUK_ASSERT(thr->heap->lj.iserror); /* already set */ - - DUK_DD(DUK_DDPRINT("-> yield an error, converted to a throw in the resumer, propagate")); - goto check_longjmp; - } else { - /* When handling the yield, the last reference to - * 'thr' may disappear. - */ - - DUK_GC_TORTURE(resumer->heap); - duk_hthread_activation_unwind_norz(resumer); - DUK_GC_TORTURE(resumer->heap); - thr->state = DUK_HTHREAD_STATE_YIELDED; - thr->resumer = NULL; - DUK_HTHREAD_DECREF_NORZ(thr, resumer); - resumer->state = DUK_HTHREAD_STATE_RUNNING; - DUK_HEAP_SWITCH_THREAD(thr->heap, resumer); - duk__handle_yield(thr, resumer, &thr->heap->lj.value1); - thr = resumer; - DUK_GC_TORTURE(resumer->heap); - - DUK_DD(DUK_DDPRINT("-> yield a value, restart execution in resumer")); - retval = DUK__LONGJMP_RESTART; - goto wipe_and_return; - } - DUK_UNREACHABLE(); - break; /* never here */ - } -#endif /* DUK_USE_COROUTINE_SUPPORT */ - - case DUK_LJ_TYPE_THROW: { - /* - * Three possible outcomes: - * * A try or finally catcher is found => resume there. - * (or) - * * The error propagates to the bytecode executor entry - * level (and we're in the entry thread) => rethrow - * with a new longjmp(), after restoring the previous - * catchpoint. - * * The error is not caught in the current thread, so - * the thread finishes with an error. This works like - * a yielded error, except that the thread is finished - * and can no longer be resumed. (There is always a - * resumer in this case.) - * - * Note: until we hit the entry level, there can only be - * ECMAScript activations. - */ - - duk_activation *act; - duk_catcher *cat; - duk_hthread *resumer; - - for (;;) { - act = thr->callstack_curr; - if (act == NULL) { - break; - } - - for (;;) { - cat = act->cat; - if (cat == NULL) { - break; - } - - if (DUK_CAT_HAS_CATCH_ENABLED(cat)) { - DUK_ASSERT(DUK_CAT_GET_TYPE(cat) == DUK_CAT_TYPE_TCF); - - DUK_DDD(DUK_DDDPRINT("before catch part 1: thr=%p, act=%p, cat=%p", - (void *) thr, - (void *) act, - (void *) act->cat)); - duk__handle_catch_part1(thr, - &thr->heap->lj.value1, - DUK_LJ_TYPE_THROW, - out_delayed_catch_setup); - - DUK_DD(DUK_DDPRINT("-> throw caught by a 'catch' clause, restart execution")); - retval = DUK__LONGJMP_RESTART; - goto wipe_and_return; - } - - if (DUK_CAT_HAS_FINALLY_ENABLED(cat)) { - DUK_ASSERT(DUK_CAT_GET_TYPE(cat) == DUK_CAT_TYPE_TCF); - DUK_ASSERT(!DUK_CAT_HAS_CATCH_ENABLED(cat)); - - duk__handle_finally(thr, &thr->heap->lj.value1, DUK_LJ_TYPE_THROW); - - DUK_DD(DUK_DDPRINT("-> throw caught by a 'finally' clause, restart execution")); - retval = DUK__LONGJMP_RESTART; - goto wipe_and_return; - } - - duk_hthread_catcher_unwind_norz(thr, act); - } - - if (act == entry_act) { - /* Not caught by anything before entry level; rethrow and let the - * final catcher finish unwinding (esp. value stack). - */ - DUK_D(DUK_DPRINT("-> throw propagated up to entry level, rethrow and exit bytecode executor")); - retval = DUK__LONGJMP_RETHROW; - goto just_return; - } - - duk_hthread_activation_unwind_norz(thr); - } - - DUK_DD(DUK_DDPRINT("-> throw not caught by current thread, yield error to resumer and recheck longjmp")); - - /* Not caught by current thread, thread terminates (yield error to resumer); - * note that this may cause a cascade if the resumer terminates with an uncaught - * exception etc (this is OK, but needs careful testing). - */ - - DUK_ASSERT(thr->resumer != NULL); - DUK_ASSERT(thr->resumer->callstack_top >= 2); /* ECMAScript activation + Duktape.Thread.resume() activation */ - DUK_ASSERT(thr->resumer->callstack_curr != NULL); - DUK_ASSERT(thr->resumer->callstack_curr->parent != NULL); - DUK_ASSERT( - DUK_ACT_GET_FUNC(thr->resumer->callstack_curr->parent) != NULL && - DUK_HOBJECT_IS_COMPFUNC(DUK_ACT_GET_FUNC(thr->resumer->callstack_curr->parent))); /* an ECMAScript function */ - - resumer = thr->resumer; - - /* reset longjmp */ - - DUK_ASSERT(thr->heap->lj.type == DUK_LJ_TYPE_THROW); /* already set */ - /* lj.value1 already set */ - - duk_hthread_terminate(thr); /* updates thread state, minimizes its allocations */ - DUK_ASSERT(thr->state == DUK_HTHREAD_STATE_TERMINATED); - - thr->resumer = NULL; - DUK_HTHREAD_DECREF_NORZ(thr, resumer); - resumer->state = DUK_HTHREAD_STATE_RUNNING; - DUK_HEAP_SWITCH_THREAD(thr->heap, resumer); - thr = resumer; - goto check_longjmp; - } - - case DUK_LJ_TYPE_BREAK: /* pseudotypes, not used in actual longjmps */ - case DUK_LJ_TYPE_CONTINUE: - case DUK_LJ_TYPE_RETURN: - case DUK_LJ_TYPE_NORMAL: - default: { - /* should never happen, but be robust */ - DUK_D(DUK_DPRINT("caught unknown longjmp type %ld, treat as internal error", (long) thr->heap->lj.type)); - goto convert_to_internal_error; - } - - } /* end switch */ - - DUK_UNREACHABLE(); - -wipe_and_return: - DUK_DD(DUK_DDPRINT("handling longjmp done, wipe-and-return, top=%ld", (long) duk_get_top(thr))); - thr->heap->lj.type = DUK_LJ_TYPE_UNKNOWN; - thr->heap->lj.iserror = 0; - - DUK_TVAL_SET_UNDEFINED_UPDREF(thr, &thr->heap->lj.value1); /* side effects */ - DUK_TVAL_SET_UNDEFINED_UPDREF(thr, &thr->heap->lj.value2); /* side effects */ - - DUK_GC_TORTURE(thr->heap); - -just_return: - return retval; - -convert_to_internal_error: - /* This could also be thrown internally (set the error, goto check_longjmp), - * but it's better for internal errors to bubble outwards so that we won't - * infinite loop in this catchpoint. - */ - DUK_ERROR_INTERNAL(thr); - DUK_WO_NORETURN(return 0;); -} - -/* Handle a BREAK/CONTINUE opcode. Avoid using longjmp() for BREAK/CONTINUE - * handling because it has a measurable performance impact in ordinary - * environments and an extreme impact in Emscripten (GH-342). - */ -DUK_LOCAL DUK_EXEC_NOINLINE_PERF void duk__handle_break_or_continue(duk_hthread *thr, - duk_uint_t label_id, - duk_small_uint_t lj_type) { - duk_activation *act; - duk_catcher *cat; - - DUK_ASSERT(thr != NULL); - - /* Find a matching label catcher or 'finally' catcher in - * the same function, unwinding catchers as we go. - * - * A label catcher must always exist and will match unless - * a 'finally' captures the break/continue first. It is the - * compiler's responsibility to ensure that labels are used - * correctly. - */ - - act = thr->callstack_curr; - DUK_ASSERT(act != NULL); - - for (;;) { - cat = act->cat; - if (cat == NULL) { - break; - } - - DUK_DDD(DUK_DDDPRINT("considering catcher %p: type=%ld label=%ld", - (void *) cat, - (long) DUK_CAT_GET_TYPE(cat), - (long) DUK_CAT_GET_LABEL(cat))); - - /* XXX: bit mask test; FINALLY <-> TCF, single bit mask would suffice? */ - - if (DUK_CAT_GET_TYPE(cat) == DUK_CAT_TYPE_TCF && DUK_CAT_HAS_FINALLY_ENABLED(cat)) { - duk_tval tv_tmp; - - DUK_TVAL_SET_U32(&tv_tmp, (duk_uint32_t) label_id); - duk__handle_finally(thr, &tv_tmp, lj_type); - - DUK_DD(DUK_DDPRINT("-> break/continue caught by 'finally', restart execution")); - return; - } - if (DUK_CAT_GET_TYPE(cat) == DUK_CAT_TYPE_LABEL && (duk_uint_t) DUK_CAT_GET_LABEL(cat) == label_id) { - duk__handle_label(thr, lj_type); - - DUK_DD( - DUK_DDPRINT("-> break/continue caught by a label catcher (in the same function), restart execution")); - return; - } - - duk_hthread_catcher_unwind_norz(thr, act); - } - - /* Should never happen, but be robust. */ - DUK_D(DUK_DPRINT( - "-> break/continue not caught by anything in the current function (should never happen), throw internal error")); - DUK_ERROR_INTERNAL(thr); - DUK_WO_NORETURN(return;); -} - -/* Handle a RETURN opcode. Avoid using longjmp() for return handling because - * it has a measurable performance impact in ordinary environments and an extreme - * impact in Emscripten (GH-342). Return value is on value stack top. - */ -DUK_LOCAL duk_small_uint_t duk__handle_return(duk_hthread *thr, duk_activation *entry_act) { - duk_tval *tv1; - duk_tval *tv2; -#if defined(DUK_USE_COROUTINE_SUPPORT) - duk_hthread *resumer; -#endif - duk_activation *act; - duk_catcher *cat; - - /* We can directly access value stack here. */ - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(entry_act != NULL); - DUK_ASSERT(thr->valstack_top - 1 >= thr->valstack_bottom); - tv1 = thr->valstack_top - 1; - DUK_TVAL_CHKFAST_INPLACE_FAST(tv1); /* fastint downgrade check for return values */ - - /* - * Four possible outcomes: - * - * 1. A 'finally' in the same function catches the 'return'. - * It may continue to propagate when 'finally' is finished, - * or it may be neutralized by 'finally' (both handled by - * ENDFIN). - * - * 2. The return happens at the entry level of the bytecode - * executor, so return from the executor (in C stack). - * - * 3. There is a calling (ECMAScript) activation in the call - * stack => return to it, in the same executor instance. - * - * 4. There is no calling activation, and the thread is - * terminated. There is always a resumer in this case, - * which gets the return value similarly to a 'yield' - * (except that the current thread can no longer be - * resumed). - */ - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(thr->callstack_top >= 1); - - act = thr->callstack_curr; - DUK_ASSERT(act != NULL); - - for (;;) { - cat = act->cat; - if (cat == NULL) { - break; - } - - if (DUK_CAT_GET_TYPE(cat) == DUK_CAT_TYPE_TCF && DUK_CAT_HAS_FINALLY_ENABLED(cat)) { - DUK_ASSERT(thr->valstack_top - 1 >= thr->valstack_bottom); - duk__handle_finally(thr, thr->valstack_top - 1, DUK_LJ_TYPE_RETURN); - - DUK_DD(DUK_DDPRINT("-> return caught by 'finally', restart execution")); - return DUK__RETHAND_RESTART; - } - - duk_hthread_catcher_unwind_norz(thr, act); - } - - if (act == entry_act) { - /* Return to the bytecode executor caller who will unwind stacks - * and handle constructor post-processing. - * Return value is already on the stack top: [ ... retval ]. - */ - - DUK_DDD(DUK_DDDPRINT("-> return propagated up to entry level, exit bytecode executor")); - return DUK__RETHAND_FINISHED; - } - - if (thr->callstack_top >= 2) { - /* There is a caller; it MUST be an ECMAScript caller (otherwise it would - * match entry_act check). - */ - DUK_DDD(DUK_DDDPRINT("return to ECMAScript caller, retval_byteoff=%ld, lj_value1=%!T", - (long) (thr->callstack_curr->parent->retval_byteoff), - (duk_tval *) &thr->heap->lj.value1)); - - DUK_ASSERT(thr->callstack_curr != NULL); - DUK_ASSERT(thr->callstack_curr->parent != NULL); - DUK_ASSERT(DUK_HOBJECT_IS_COMPFUNC(DUK_ACT_GET_FUNC(thr->callstack_curr->parent))); /* must be ECMAScript */ - -#if defined(DUK_USE_ES6_PROXY) - if (thr->callstack_curr->flags & (DUK_ACT_FLAG_CONSTRUCT | DUK_ACT_FLAG_CONSTRUCT_PROXY)) { - duk_call_construct_postprocess(thr, - thr->callstack_curr->flags & - DUK_ACT_FLAG_CONSTRUCT_PROXY); /* side effects */ - } -#else - if (thr->callstack_curr->flags & DUK_ACT_FLAG_CONSTRUCT) { - duk_call_construct_postprocess(thr, 0); /* side effects */ - } -#endif - - tv1 = (duk_tval *) (void *) ((duk_uint8_t *) thr->valstack + thr->callstack_curr->parent->retval_byteoff); - DUK_ASSERT(thr->valstack_top - 1 >= thr->valstack_bottom); - tv2 = thr->valstack_top - 1; - DUK_TVAL_SET_TVAL_UPDREF(thr, tv1, tv2); /* side effects */ - - /* Catch stack unwind happens inline in callstack unwind. */ - duk_hthread_activation_unwind_norz(thr); - - duk__reconfig_valstack_ecma_return(thr); - - DUK_DD(DUK_DDPRINT("-> return not intercepted, restart execution in caller")); - return DUK__RETHAND_RESTART; - } - -#if defined(DUK_USE_COROUTINE_SUPPORT) - DUK_DD(DUK_DDPRINT("no calling activation, thread finishes (similar to yield)")); - - DUK_ASSERT(thr->resumer != NULL); - DUK_ASSERT(thr->resumer->callstack_top >= 2); /* ECMAScript activation + Duktape.Thread.resume() activation */ - DUK_ASSERT(thr->resumer->callstack_curr != NULL); - DUK_ASSERT(thr->resumer->callstack_curr->parent != NULL); - DUK_ASSERT(DUK_ACT_GET_FUNC(thr->resumer->callstack_curr) != NULL && - DUK_HOBJECT_IS_NATFUNC(DUK_ACT_GET_FUNC(thr->resumer->callstack_curr)) && - ((duk_hnatfunc *) DUK_ACT_GET_FUNC(thr->resumer->callstack_curr))->func == - duk_bi_thread_resume); /* Duktape.Thread.resume() */ - DUK_ASSERT(DUK_ACT_GET_FUNC(thr->resumer->callstack_curr->parent) != NULL && - DUK_HOBJECT_IS_COMPFUNC(DUK_ACT_GET_FUNC(thr->resumer->callstack_curr->parent))); /* an ECMAScript function */ - DUK_ASSERT(thr->state == DUK_HTHREAD_STATE_RUNNING); - DUK_ASSERT(thr->resumer->state == DUK_HTHREAD_STATE_RESUMED); - - resumer = thr->resumer; - - /* Share yield longjmp handler. - * - * This sequence of steps is a bit fragile (see GH-1845): - * - We need the return value from 'thr' (resumed thread) value stack. - * The termination unwinds its value stack, losing the value. - * - We need a refcounted reference for 'thr', which may only exist - * in the caller value stack. We can't unwind or reconfigure the - * caller's value stack without potentially freeing 'thr'. - * - * Current approach is to capture the 'thr' return value and store - * a reference to 'thr' in the caller value stack temporarily. This - * keeps 'thr' reachable until final yield/return handling which - * removes the references atomatically. - */ - - DUK_ASSERT(thr->valstack_top - 1 >= thr->valstack_bottom); - duk_hthread_activation_unwind_norz(resumer); /* May remove last reference to 'thr', but is NORZ. */ - duk_push_tval(resumer, thr->valstack_top - 1); /* Capture return value, side effect free. */ - duk_push_hthread(resumer, thr); /* Make 'thr' reachable again, before side effects. */ - - duk_hthread_terminate(thr); /* Updates thread state, minimizes its allocations. */ - thr->resumer = NULL; - DUK_HTHREAD_DECREF(thr, resumer); - DUK_ASSERT(thr->state == DUK_HTHREAD_STATE_TERMINATED); - - resumer->state = DUK_HTHREAD_STATE_RUNNING; - DUK_HEAP_SWITCH_THREAD(thr->heap, resumer); - - DUK_ASSERT(resumer->valstack_top - 2 >= resumer->valstack_bottom); - duk__handle_yield(thr, resumer, resumer->valstack_top - 2); - thr = NULL; /* 'thr' invalidated by call */ - -#if 0 - thr = resumer; /* not needed */ -#endif - - DUK_DD(DUK_DDPRINT("-> return not caught, thread terminated; handle like yield, restart execution in resumer")); - return DUK__RETHAND_RESTART; -#else - /* Without coroutine support this case should never happen. */ - DUK_ERROR_INTERNAL(thr); - DUK_WO_NORETURN(return 0;); -#endif -} - -/* - * Executor interrupt handling - * - * The handler is called whenever the interrupt countdown reaches zero - * (or below). The handler must perform whatever checks are activated, - * e.g. check for cumulative step count to impose an execution step - * limit or check for breakpoints or other debugger interaction. - * - * When the actions are done, the handler must reinit the interrupt - * init and counter values. The 'init' value must indicate how many - * bytecode instructions are executed before the next interrupt. The - * counter must interface with the bytecode executor loop. Concretely, - * the new init value is normally one higher than the new counter value. - * For instance, to execute exactly one bytecode instruction the init - * value is set to 1 and the counter to 0. If an error is thrown by the - * interrupt handler, the counters are set to the same value (e.g. both - * to 0 to cause an interrupt when the next bytecode instruction is about - * to be executed after error handling). - * - * Maintaining the init/counter value properly is important for accurate - * behavior. For instance, executor step limit needs a cumulative step - * count which is simply computed as a sum of 'init' values. This must - * work accurately even when single stepping. - */ - -#if defined(DUK_USE_INTERRUPT_COUNTER) - -#define DUK__INT_NOACTION 0 /* no specific action, resume normal execution */ -#define DUK__INT_RESTART 1 /* must "goto restart_execution", e.g. breakpoints changed */ - -#if defined(DUK_USE_DEBUGGER_SUPPORT) -DUK_LOCAL void duk__interrupt_handle_debugger(duk_hthread *thr, duk_bool_t *out_immediate, duk_small_uint_t *out_interrupt_retval) { - duk_activation *act; - duk_breakpoint *bp; - duk_breakpoint **bp_active; - duk_uint_fast32_t line = 0; - duk_bool_t process_messages; - duk_bool_t processed_messages = 0; - - DUK_ASSERT(thr->heap->dbg_processing == 0); /* don't re-enter e.g. during Eval */ - - act = thr->callstack_curr; - DUK_ASSERT(act != NULL); - - /* It might seem that replacing 'thr->heap' with just 'heap' below - * might be a good idea, but it increases code size slightly - * (probably due to unnecessary spilling) at least on x64. - */ - - /* - * Single opcode step check - */ - - if (thr->heap->dbg_pause_flags & DUK_PAUSE_FLAG_ONE_OPCODE_ACTIVE) { - DUK_D(DUK_DPRINT("PAUSE TRIGGERED by one opcode step")); - duk_debug_set_paused(thr->heap); - } - - /* - * Breakpoint and step state checks - */ - - if (act->flags & DUK_ACT_FLAG_BREAKPOINT_ACTIVE || (thr->heap->dbg_pause_act == thr->callstack_curr)) { - line = duk_debug_curr_line(thr); - - if (act->prev_line != line) { - /* Stepped? Step out is handled by callstack unwind. */ - if ((thr->heap->dbg_pause_flags & DUK_PAUSE_FLAG_LINE_CHANGE) && - (thr->heap->dbg_pause_act == thr->callstack_curr) && (line != thr->heap->dbg_pause_startline)) { - DUK_D(DUK_DPRINT("PAUSE TRIGGERED by line change, at line %ld", (long) line)); - duk_debug_set_paused(thr->heap); - } - - /* Check for breakpoints only on line transition. - * Breakpoint is triggered when we enter the target - * line from a different line, and the previous line - * was within the same function. - * - * This condition is tricky: the condition used to be - * that transition to -or across- the breakpoint line - * triggered the breakpoint. This seems intuitively - * better because it handles breakpoints on lines with - * no emitted opcodes; but this leads to the issue - * described in: https://github.com/svaarala/duktape/issues/263. - */ - bp_active = thr->heap->dbg_breakpoints_active; - for (;;) { - bp = *bp_active++; - if (bp == NULL) { - break; - } - - DUK_ASSERT(bp->filename != NULL); - if (act->prev_line != bp->line && line == bp->line) { - DUK_D(DUK_DPRINT("PAUSE TRIGGERED by breakpoint at %!O:%ld", - (duk_heaphdr *) bp->filename, - (long) bp->line)); - duk_debug_set_paused(thr->heap); - } - } - } else { - ; - } - - act->prev_line = (duk_uint32_t) line; - } - - /* - * Rate limit check for sending status update or peeking into - * the debug transport. Both can be expensive operations that - * we don't want to do on every opcode. - * - * Making sure the interval remains reasonable on a wide variety - * of targets and bytecode is difficult without a timestamp, so - * we use a Date-provided timestamp for the rate limit check. - * But since it's also expensive to get a timestamp, a bytecode - * counter is used to rate limit getting timestamps. - */ - - process_messages = 0; - if (thr->heap->dbg_state_dirty || DUK_HEAP_HAS_DEBUGGER_PAUSED(thr->heap) || thr->heap->dbg_detaching) { - /* Enter message processing loop for sending Status notifys and - * to finish a pending detach. - */ - process_messages = 1; - } - - /* XXX: remove heap->dbg_exec_counter, use heap->inst_count_interrupt instead? */ - DUK_ASSERT(thr->interrupt_init >= 0); - thr->heap->dbg_exec_counter += (duk_uint_t) thr->interrupt_init; - if (thr->heap->dbg_exec_counter - thr->heap->dbg_last_counter >= DUK_HEAP_DBG_RATELIMIT_OPCODES) { - /* Overflow of the execution counter is fine and doesn't break - * anything here. - */ - - duk_double_t now, diff_last; - - thr->heap->dbg_last_counter = thr->heap->dbg_exec_counter; - now = duk_time_get_monotonic_time(thr); - - diff_last = now - thr->heap->dbg_last_time; - if (diff_last < 0.0 || diff_last >= (duk_double_t) DUK_HEAP_DBG_RATELIMIT_MILLISECS) { - /* Monotonic time should not experience time jumps, - * but the provider may be missing and we're actually - * using ECMAScript time. So, tolerate negative values - * so that a time jump works reasonably. - * - * Same interval is now used for status sending and - * peeking. - */ - - thr->heap->dbg_last_time = now; - thr->heap->dbg_state_dirty = 1; - process_messages = 1; - } - } - - /* - * Process messages and send status if necessary. - * - * If we're paused, we'll block for new messages. If we're not - * paused, we'll process anything we can peek but won't block - * for more. Detach (and re-attach) handling is all localized - * to duk_debug_process_messages() too. - * - * Debugger writes outside the message loop may cause debugger - * detach1 phase to run, after which dbg_read_cb == NULL and - * dbg_detaching != 0. The message loop will finish the detach - * by running detach2 phase, so enter the message loop also when - * detaching. - */ - - if (process_messages) { - DUK_ASSERT(thr->heap->dbg_processing == 0); - processed_messages = duk_debug_process_messages(thr, 0 /*no_block*/); - DUK_ASSERT(thr->heap->dbg_processing == 0); - } - - /* Continue checked execution if there are breakpoints or we're stepping. - * Also use checked execution if paused flag is active - it shouldn't be - * because the debug message loop shouldn't terminate if it was. Step out - * is handled by callstack unwind and doesn't need checked execution. - * Note that debugger may have detached due to error or explicit request - * above, so we must recheck attach status. - */ - - if (duk_debug_is_attached(thr->heap)) { - DUK_ASSERT(act == thr->callstack_curr); - DUK_ASSERT(act != NULL); - if (act->flags & DUK_ACT_FLAG_BREAKPOINT_ACTIVE || (thr->heap->dbg_pause_flags & DUK_PAUSE_FLAG_ONE_OPCODE) || - ((thr->heap->dbg_pause_flags & DUK_PAUSE_FLAG_LINE_CHANGE) && - thr->heap->dbg_pause_act == thr->callstack_curr) || - DUK_HEAP_HAS_DEBUGGER_PAUSED(thr->heap)) { - *out_immediate = 1; - } - - /* If we processed any debug messages breakpoints may have - * changed; restart execution to re-check active breakpoints. - */ - if (processed_messages) { - DUK_D(DUK_DPRINT("processed debug messages, restart execution to recheck possibly changed breakpoints")); - *out_interrupt_retval = DUK__INT_RESTART; - } else { - if (thr->heap->dbg_pause_flags & DUK_PAUSE_FLAG_ONE_OPCODE) { - /* Set 'pause after one opcode' active only when we're - * actually just about to execute code. - */ - thr->heap->dbg_pause_flags |= DUK_PAUSE_FLAG_ONE_OPCODE_ACTIVE; - } - } - } else { - DUK_D(DUK_DPRINT("debugger became detached, resume normal execution")); - } -} -#endif /* DUK_USE_DEBUGGER_SUPPORT */ - -DUK_LOCAL DUK_EXEC_NOINLINE_PERF DUK_COLD duk_small_uint_t duk__executor_interrupt(duk_hthread *thr) { - duk_int_t ctr; - duk_activation *act; - duk_hcompfunc *fun; - duk_bool_t immediate = 0; - duk_small_uint_t retval; - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(thr->heap != NULL); - DUK_ASSERT(thr->callstack_top > 0); - -#if defined(DUK_USE_DEBUG) - thr->heap->inst_count_interrupt += thr->interrupt_init; - DUK_DD(DUK_DDPRINT("execution interrupt, counter=%ld, init=%ld, " - "instruction counts: executor=%ld, interrupt=%ld", - (long) thr->interrupt_counter, - (long) thr->interrupt_init, - (long) thr->heap->inst_count_exec, - (long) thr->heap->inst_count_interrupt)); -#endif - - retval = DUK__INT_NOACTION; - ctr = DUK_HTHREAD_INTCTR_DEFAULT; - - /* - * Avoid nested calls. Concretely this happens during debugging, e.g. - * when we eval() an expression. - * - * Also don't interrupt if we're currently doing debug processing - * (which can be initiated outside the bytecode executor) as this - * may cause the debugger to be called recursively. Check required - * for correct operation of throw intercept and other "exotic" halting - * scenarios. - */ - -#if defined(DUK_USE_DEBUGGER_SUPPORT) - if (DUK_HEAP_HAS_INTERRUPT_RUNNING(thr->heap) || thr->heap->dbg_processing) { -#else - if (DUK_HEAP_HAS_INTERRUPT_RUNNING(thr->heap)) { -#endif - DUK_DD(DUK_DDPRINT("nested executor interrupt, ignoring")); - - /* Set a high interrupt counter; the original executor - * interrupt invocation will rewrite before exiting. - */ - thr->interrupt_init = ctr; - thr->interrupt_counter = ctr - 1; - return DUK__INT_NOACTION; - } - DUK_HEAP_SET_INTERRUPT_RUNNING(thr->heap); - - act = thr->callstack_curr; - DUK_ASSERT(act != NULL); - - fun = (duk_hcompfunc *) DUK_ACT_GET_FUNC(act); - DUK_ASSERT(DUK_HOBJECT_HAS_COMPFUNC((duk_hobject *) fun)); - - DUK_UNREF(fun); - -#if defined(DUK_USE_EXEC_TIMEOUT_CHECK) - /* - * Execution timeout check - */ - - if (DUK_USE_EXEC_TIMEOUT_CHECK(thr->heap->heap_udata)) { - /* Keep throwing an error whenever we get here. The unusual values - * are set this way because no instruction is ever executed, we just - * throw an error until all try/catch/finally and other catchpoints - * have been exhausted. Duktape/C code gets control at each protected - * call but whenever it enters back into Duktape the RangeError gets - * raised. User exec timeout check must consistently indicate a timeout - * until we've fully bubbled out of Duktape. - */ - DUK_D(DUK_DPRINT("execution timeout, throwing a RangeError")); - thr->interrupt_init = 0; - thr->interrupt_counter = 0; - DUK_HEAP_CLEAR_INTERRUPT_RUNNING(thr->heap); - DUK_ERROR_RANGE(thr, "execution timeout"); - DUK_WO_NORETURN(return 0;); - } -#endif /* DUK_USE_EXEC_TIMEOUT_CHECK */ - -#if defined(DUK_USE_DEBUGGER_SUPPORT) - if (!thr->heap->dbg_processing && (thr->heap->dbg_read_cb != NULL || thr->heap->dbg_detaching)) { - /* Avoid recursive re-entry; enter when we're attached or - * detaching (to finish off the pending detach). - */ - duk__interrupt_handle_debugger(thr, &immediate, &retval); - DUK_ASSERT(act == thr->callstack_curr); - } -#endif /* DUK_USE_DEBUGGER_SUPPORT */ - - /* - * Update the interrupt counter - */ - - if (immediate) { - /* Cause an interrupt after executing one instruction. */ - ctr = 1; - } - - /* The counter value is one less than the init value: init value should - * indicate how many instructions are executed before interrupt. To - * execute 1 instruction (after interrupt handler return), counter must - * be 0. - */ - DUK_ASSERT(ctr >= 1); - thr->interrupt_init = ctr; - thr->interrupt_counter = ctr - 1; - DUK_HEAP_CLEAR_INTERRUPT_RUNNING(thr->heap); - - return retval; -} -#endif /* DUK_USE_INTERRUPT_COUNTER */ - -/* - * Debugger handling for executor restart - * - * Check for breakpoints, stepping, etc, and figure out if we should execute - * in checked or normal mode. Note that we can't do this when an activation - * is created, because breakpoint status (and stepping status) may change - * later, so we must recheck every time we're executing an activation. - * This primitive should be side effect free to avoid changes during check. - */ - -#if defined(DUK_USE_DEBUGGER_SUPPORT) -DUK_LOCAL void duk__executor_recheck_debugger(duk_hthread *thr, duk_activation *act, duk_hcompfunc *fun) { - duk_heap *heap; - duk_tval *tv_tmp; - duk_hstring *filename; - duk_small_uint_t bp_idx; - duk_breakpoint **bp_active; - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(act != NULL); - DUK_ASSERT(fun != NULL); - - heap = thr->heap; - bp_active = heap->dbg_breakpoints_active; - act->flags &= ~DUK_ACT_FLAG_BREAKPOINT_ACTIVE; - - tv_tmp = duk_hobject_find_entry_tval_ptr_stridx(thr->heap, (duk_hobject *) fun, DUK_STRIDX_FILE_NAME); - if (tv_tmp && DUK_TVAL_IS_STRING(tv_tmp)) { - filename = DUK_TVAL_GET_STRING(tv_tmp); - - /* Figure out all active breakpoints. A breakpoint is - * considered active if the current function's fileName - * matches the breakpoint's fileName, AND there is no - * inner function that has matching line numbers - * (otherwise a breakpoint would be triggered both - * inside and outside of the inner function which would - * be confusing). Example: - * - * function foo() { - * print('foo'); - * function bar() { <-. breakpoints in these - * print('bar'); | lines should not affect - * } <-' foo() execution - * bar(); - * } - * - * We need a few things that are only available when - * debugger support is enabled: (1) a line range for - * each function, and (2) access to the function - * template to access the inner functions (and their - * line ranges). - * - * It's important to have a narrow match for active - * breakpoints so that we don't enter checked execution - * when that's not necessary. For instance, if we're - * running inside a certain function and there's - * breakpoint outside in (after the call site), we - * don't want to slow down execution of the function. - */ - - for (bp_idx = 0; bp_idx < heap->dbg_breakpoint_count; bp_idx++) { - duk_breakpoint *bp = heap->dbg_breakpoints + bp_idx; - duk_hobject **funcs, **funcs_end; - duk_hcompfunc *inner_fun; - duk_bool_t bp_match; - - if (bp->filename == filename && bp->line >= fun->start_line && bp->line <= fun->end_line) { - bp_match = 1; - DUK_DD(DUK_DDPRINT("breakpoint filename and line match: " - "%s:%ld vs. %s (line %ld vs. %ld-%ld)", - DUK_HSTRING_GET_DATA(bp->filename), - (long) bp->line, - DUK_HSTRING_GET_DATA(filename), - (long) bp->line, - (long) fun->start_line, - (long) fun->end_line)); - - funcs = DUK_HCOMPFUNC_GET_FUNCS_BASE(thr->heap, fun); - funcs_end = DUK_HCOMPFUNC_GET_FUNCS_END(thr->heap, fun); - while (funcs != funcs_end) { - inner_fun = (duk_hcompfunc *) *funcs; - DUK_ASSERT(DUK_HOBJECT_IS_COMPFUNC((duk_hobject *) inner_fun)); - if (bp->line >= inner_fun->start_line && bp->line <= inner_fun->end_line) { - DUK_DD(DUK_DDPRINT("inner function masks ('captures') breakpoint")); - bp_match = 0; - break; - } - funcs++; - } - - if (bp_match) { - /* No need to check for size of bp_active list, - * it's always larger than maximum number of - * breakpoints. - */ - act->flags |= DUK_ACT_FLAG_BREAKPOINT_ACTIVE; - *bp_active = heap->dbg_breakpoints + bp_idx; - bp_active++; - } - } - } - } - - *bp_active = NULL; /* terminate */ - - DUK_DD(DUK_DDPRINT("ACTIVE BREAKPOINTS: %ld", (long) (bp_active - thr->heap->dbg_breakpoints_active))); - - /* Force pause if we were doing "step into" in another activation. */ - if ((thr->heap->dbg_pause_flags & DUK_PAUSE_FLAG_FUNC_ENTRY) && thr->heap->dbg_pause_act != thr->callstack_curr) { - DUK_D(DUK_DPRINT("PAUSE TRIGGERED by function entry")); - duk_debug_set_paused(thr->heap); - } - - /* Force interrupt right away if we're paused or in "checked mode". - * Step out is handled by callstack unwind. - */ - if ((act->flags & DUK_ACT_FLAG_BREAKPOINT_ACTIVE) || DUK_HEAP_HAS_DEBUGGER_PAUSED(thr->heap) || - ((thr->heap->dbg_pause_flags & DUK_PAUSE_FLAG_LINE_CHANGE) && thr->heap->dbg_pause_act == thr->callstack_curr)) { - /* We'll need to interrupt early so recompute the init - * counter to reflect the number of bytecode instructions - * executed so that step counts for e.g. debugger rate - * limiting are accurate. - */ - DUK_ASSERT(thr->interrupt_counter <= thr->interrupt_init); - thr->interrupt_init = thr->interrupt_init - thr->interrupt_counter; - thr->interrupt_counter = 0; - } -} -#endif /* DUK_USE_DEBUGGER_SUPPORT */ - -/* - * Opcode handlers for opcodes with a lot of code and which are relatively - * rare; NOINLINE to reduce amount of code in main bytecode dispatcher. - */ - -DUK_LOCAL DUK_EXEC_NOINLINE_PERF void duk__handle_op_initset_initget(duk_hthread *thr, duk_uint_fast32_t ins) { - duk_bool_t is_set = (DUK_DEC_OP(ins) == DUK_OP_INITSET); - duk_uint_fast_t idx; - duk_uint_t defprop_flags; - - /* A -> object register (acts as a source) - * BC -> BC+0 contains key, BC+1 closure (value) - */ - - /* INITSET/INITGET are only used to initialize object literal keys. - * There may be a previous propery in ES2015 because duplicate property - * names are allowed. - */ - - /* This could be made more optimal by accessing internals directly. */ - - idx = (duk_uint_fast_t) DUK_DEC_BC(ins); - duk_dup(thr, (duk_idx_t) (idx + 0)); /* key */ - duk_dup(thr, (duk_idx_t) (idx + 1)); /* getter/setter */ - if (is_set) { - defprop_flags = - DUK_DEFPROP_HAVE_SETTER | DUK_DEFPROP_FORCE | DUK_DEFPROP_SET_ENUMERABLE | DUK_DEFPROP_SET_CONFIGURABLE; - } else { - defprop_flags = - DUK_DEFPROP_HAVE_GETTER | DUK_DEFPROP_FORCE | DUK_DEFPROP_SET_ENUMERABLE | DUK_DEFPROP_SET_CONFIGURABLE; - } - duk_def_prop(thr, (duk_idx_t) DUK_DEC_A(ins), defprop_flags); -} - -DUK_LOCAL DUK_EXEC_NOINLINE_PERF void duk__handle_op_trycatch(duk_hthread *thr, duk_uint_fast32_t ins, duk_instr_t *curr_pc) { - duk_activation *act; - duk_catcher *cat; - duk_tval *tv1; - duk_small_uint_fast_t a; - duk_small_uint_fast_t bc; - - /* A -> flags - * BC -> reg_catch; base register for two registers used both during - * trycatch setup and when catch is triggered - * - * If DUK_BC_TRYCATCH_FLAG_CATCH_BINDING set: - * reg_catch + 0: catch binding variable name (string). - * Automatic declarative environment is established for - * the duration of the 'catch' clause. - * - * If DUK_BC_TRYCATCH_FLAG_WITH_BINDING set: - * reg_catch + 0: with 'target value', which is coerced to - * an object and then used as a bindind object for an - * environment record. The binding is initialized here, for - * the 'try' clause. - * - * Note that a TRYCATCH generated for a 'with' statement has no - * catch or finally parts. - */ - - /* XXX: TRYCATCH handling should be reworked to avoid creating - * an explicit scope unless it is actually needed (e.g. function - * instances or eval is executed inside the catch block). This - * rework is not trivial because the compiler doesn't have an - * intermediate representation. When the rework is done, the - * opcode format can also be made more straightforward. - */ - - /* XXX: side effect handling is quite awkward here */ - - DUK_DDD(DUK_DDDPRINT("TRYCATCH: reg_catch=%ld, have_catch=%ld, " - "have_finally=%ld, catch_binding=%ld, with_binding=%ld (flags=0x%02lx)", - (long) DUK_DEC_BC(ins), - (long) (DUK_DEC_A(ins) & DUK_BC_TRYCATCH_FLAG_HAVE_CATCH ? 1 : 0), - (long) (DUK_DEC_A(ins) & DUK_BC_TRYCATCH_FLAG_HAVE_FINALLY ? 1 : 0), - (long) (DUK_DEC_A(ins) & DUK_BC_TRYCATCH_FLAG_CATCH_BINDING ? 1 : 0), - (long) (DUK_DEC_A(ins) & DUK_BC_TRYCATCH_FLAG_WITH_BINDING ? 1 : 0), - (unsigned long) DUK_DEC_A(ins))); - - a = DUK_DEC_A(ins); - bc = DUK_DEC_BC(ins); - - /* Registers 'bc' and 'bc + 1' are written in longjmp handling - * and if their previous values (which are temporaries) become - * unreachable -and- have a finalizer, there'll be a function - * call during error handling which is not supported now (GH-287). - * Ensure that both 'bc' and 'bc + 1' have primitive values to - * guarantee no finalizer calls in error handling. Scrubbing also - * ensures finalizers for the previous values run here rather than - * later. Error handling related values are also written to 'bc' - * and 'bc + 1' but those values never become unreachable during - * error handling, so there's no side effect problem even if the - * error value has a finalizer. - */ - duk_dup(thr, (duk_idx_t) bc); /* Stabilize value. */ - duk_to_undefined(thr, (duk_idx_t) bc); - duk_to_undefined(thr, (duk_idx_t) (bc + 1)); - - /* Allocate catcher and populate it. Doesn't have to - * be fully atomic, but the catcher must be in a - * consistent state if side effects (such as finalizer - * calls) occur. - */ - - cat = duk_hthread_catcher_alloc(thr); - DUK_ASSERT(cat != NULL); - - cat->flags = DUK_CAT_TYPE_TCF; - cat->h_varname = NULL; - cat->pc_base = (duk_instr_t *) curr_pc; /* pre-incremented, points to first jump slot */ - cat->idx_base = (duk_size_t) (thr->valstack_bottom - thr->valstack) + bc; - - act = thr->callstack_curr; - DUK_ASSERT(act != NULL); - cat->parent = act->cat; - act->cat = cat; - - if (a & DUK_BC_TRYCATCH_FLAG_HAVE_CATCH) { - cat->flags |= DUK_CAT_FLAG_CATCH_ENABLED; - } - if (a & DUK_BC_TRYCATCH_FLAG_HAVE_FINALLY) { - cat->flags |= DUK_CAT_FLAG_FINALLY_ENABLED; - } - if (a & DUK_BC_TRYCATCH_FLAG_CATCH_BINDING) { - DUK_DDD(DUK_DDDPRINT("catch binding flag set to catcher")); - cat->flags |= DUK_CAT_FLAG_CATCH_BINDING_ENABLED; - tv1 = DUK_GET_TVAL_NEGIDX(thr, -1); - DUK_ASSERT(DUK_TVAL_IS_STRING(tv1)); - - /* borrowed reference; although 'tv1' comes from a register, - * its value was loaded using LDCONST so the constant will - * also exist and be reachable. - */ - cat->h_varname = DUK_TVAL_GET_STRING(tv1); - } else if (a & DUK_BC_TRYCATCH_FLAG_WITH_BINDING) { - duk_hobjenv *env; - duk_hobject *target; - - /* Delayed env initialization for activation (if needed). */ - DUK_ASSERT(thr->callstack_top >= 1); - DUK_ASSERT(act == thr->callstack_curr); - DUK_ASSERT(act != NULL); - if (act->lex_env == NULL) { - DUK_DDD(DUK_DDDPRINT("delayed environment initialization")); - DUK_ASSERT(act->var_env == NULL); - - duk_js_init_activation_environment_records_delayed(thr, act); - DUK_ASSERT(act == thr->callstack_curr); - DUK_UNREF(act); /* 'act' is no longer accessed, scanbuild fix */ - } - DUK_ASSERT(act->lex_env != NULL); - DUK_ASSERT(act->var_env != NULL); - - /* Coerce 'with' target. */ - target = duk_to_hobject(thr, -1); - DUK_ASSERT(target != NULL); - - /* Create an object environment; it is not pushed - * so avoid side effects very carefully until it is - * referenced. - */ - env = duk_hobjenv_alloc(thr, DUK_HOBJECT_FLAG_EXTENSIBLE | DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_OBJENV)); - DUK_ASSERT(env != NULL); - DUK_ASSERT(DUK_HOBJECT_GET_PROTOTYPE(thr->heap, (duk_hobject *) env) == NULL); - env->target = target; /* always provideThis=true */ - DUK_HOBJECT_INCREF(thr, target); - env->has_this = 1; - DUK_HOBJENV_ASSERT_VALID(env); - DUK_DDD(DUK_DDDPRINT("environment for with binding: %!iO", env)); - - DUK_ASSERT(act == thr->callstack_curr); - DUK_ASSERT(DUK_HOBJECT_GET_PROTOTYPE(thr->heap, (duk_hobject *) env) == NULL); - DUK_ASSERT(act->lex_env != NULL); - DUK_HOBJECT_SET_PROTOTYPE(thr->heap, (duk_hobject *) env, act->lex_env); - act->lex_env = (duk_hobject *) env; /* Now reachable. */ - DUK_HOBJECT_INCREF(thr, (duk_hobject *) env); - /* Net refcount change to act->lex_env is 0: incref for env's - * prototype, decref for act->lex_env overwrite. - */ - - /* Set catcher lex_env active (affects unwind) - * only when the whole setup is complete. - */ - cat = act->cat; /* XXX: better to relookup? not mandatory because 'cat' is stable */ - cat->flags |= DUK_CAT_FLAG_LEXENV_ACTIVE; - } else { - ; - } - - DUK_DDD(DUK_DDDPRINT("TRYCATCH catcher: flags=0x%08lx, pc_base=%ld, " - "idx_base=%ld, h_varname=%!O", - (unsigned long) cat->flags, - (long) cat->pc_base, - (long) cat->idx_base, - (duk_heaphdr *) cat->h_varname)); - - duk_pop_unsafe(thr); -} - -DUK_LOCAL DUK_EXEC_NOINLINE_PERF duk_instr_t *duk__handle_op_endtry(duk_hthread *thr, duk_uint_fast32_t ins) { - duk_activation *act; - duk_catcher *cat; - duk_tval *tv1; - duk_instr_t *pc_base; - - DUK_UNREF(ins); - - DUK_ASSERT(thr->callstack_top >= 1); - act = thr->callstack_curr; - DUK_ASSERT(act != NULL); - cat = act->cat; - DUK_ASSERT(cat != NULL); - DUK_ASSERT(DUK_CAT_GET_TYPE(act->cat) == DUK_CAT_TYPE_TCF); - - DUK_DDD(DUK_DDDPRINT("ENDTRY: clearing catch active flag (regardless of whether it was set or not)")); - DUK_CAT_CLEAR_CATCH_ENABLED(cat); - - pc_base = cat->pc_base; - - if (DUK_CAT_HAS_FINALLY_ENABLED(cat)) { - DUK_DDD(DUK_DDDPRINT("ENDTRY: finally part is active, jump through 2nd jump slot with 'normal continuation'")); - - tv1 = thr->valstack + cat->idx_base; - DUK_ASSERT(tv1 >= thr->valstack && tv1 < thr->valstack_top); - DUK_TVAL_SET_UNDEFINED_UPDREF(thr, tv1); /* side effects */ - tv1 = NULL; - - tv1 = thr->valstack + cat->idx_base + 1; - DUK_ASSERT(tv1 >= thr->valstack && tv1 < thr->valstack_top); - DUK_TVAL_SET_U32_UPDREF(thr, tv1, (duk_uint32_t) DUK_LJ_TYPE_NORMAL); /* side effects */ - tv1 = NULL; - - DUK_CAT_CLEAR_FINALLY_ENABLED(cat); - } else { - DUK_DDD( - DUK_DDDPRINT("ENDTRY: no finally part, dismantle catcher, jump through 2nd jump slot (to end of statement)")); - - duk_hthread_catcher_unwind_norz(thr, act); /* lexenv may be set for 'with' binding */ - /* no need to unwind callstack */ - } - - return pc_base + 1; /* new curr_pc value */ -} - -DUK_LOCAL DUK_EXEC_NOINLINE_PERF duk_instr_t *duk__handle_op_endcatch(duk_hthread *thr, duk_uint_fast32_t ins) { - duk_activation *act; - duk_catcher *cat; - duk_tval *tv1; - duk_instr_t *pc_base; - - DUK_UNREF(ins); - - DUK_ASSERT(thr->callstack_top >= 1); - act = thr->callstack_curr; - DUK_ASSERT(act != NULL); - cat = act->cat; - DUK_ASSERT(cat != NULL); - DUK_ASSERT(!DUK_CAT_HAS_CATCH_ENABLED(cat)); /* cleared before entering catch part */ - - if (DUK_CAT_HAS_LEXENV_ACTIVE(cat)) { - duk_hobject *prev_env; - - /* 'with' binding has no catch clause, so can't be here unless a normal try-catch */ - DUK_ASSERT(DUK_CAT_HAS_CATCH_BINDING_ENABLED(cat)); - DUK_ASSERT(act->lex_env != NULL); - - DUK_DDD(DUK_DDDPRINT("ENDCATCH: popping catcher part lexical environment")); - - prev_env = act->lex_env; - DUK_ASSERT(prev_env != NULL); - act->lex_env = DUK_HOBJECT_GET_PROTOTYPE(thr->heap, prev_env); - DUK_CAT_CLEAR_LEXENV_ACTIVE(cat); - DUK_HOBJECT_INCREF(thr, act->lex_env); - DUK_HOBJECT_DECREF(thr, prev_env); /* side effects */ - - DUK_ASSERT(act == thr->callstack_curr); - DUK_ASSERT(act != NULL); - } - - pc_base = cat->pc_base; - - if (DUK_CAT_HAS_FINALLY_ENABLED(cat)) { - DUK_DDD(DUK_DDDPRINT("ENDCATCH: finally part is active, jump through 2nd jump slot with 'normal continuation'")); - - tv1 = thr->valstack + cat->idx_base; - DUK_ASSERT(tv1 >= thr->valstack && tv1 < thr->valstack_top); - DUK_TVAL_SET_UNDEFINED_UPDREF(thr, tv1); /* side effects */ - tv1 = NULL; - - tv1 = thr->valstack + cat->idx_base + 1; - DUK_ASSERT(tv1 >= thr->valstack && tv1 < thr->valstack_top); - DUK_TVAL_SET_U32_UPDREF(thr, tv1, (duk_uint32_t) DUK_LJ_TYPE_NORMAL); /* side effects */ - tv1 = NULL; - - DUK_CAT_CLEAR_FINALLY_ENABLED(cat); - } else { - DUK_DDD( - DUK_DDDPRINT("ENDCATCH: no finally part, dismantle catcher, jump through 2nd jump slot (to end of statement)")); - - duk_hthread_catcher_unwind_norz(thr, act); - /* no need to unwind callstack */ - } - - return pc_base + 1; /* new curr_pc value */ -} - -DUK_LOCAL DUK_EXEC_NOINLINE_PERF duk_small_uint_t duk__handle_op_endfin(duk_hthread *thr, - duk_uint_fast32_t ins, - duk_activation *entry_act) { - duk_activation *act; - duk_tval *tv1; - duk_uint_t reg_catch; - duk_small_uint_t cont_type; - duk_small_uint_t ret_result; - - DUK_ASSERT(thr->ptr_curr_pc == NULL); - DUK_ASSERT(thr->callstack_top >= 1); - act = thr->callstack_curr; - DUK_ASSERT(act != NULL); - reg_catch = DUK_DEC_ABC(ins); - - /* CATCH flag may be enabled or disabled here; it may be enabled if - * the statement has a catch block but the try block does not throw - * an error. - */ - - DUK_DDD(DUK_DDDPRINT("ENDFIN: completion value=%!T, type=%!T", - (duk_tval *) (thr->valstack_bottom + reg_catch + 0), - (duk_tval *) (thr->valstack_bottom + reg_catch + 1))); - - tv1 = thr->valstack_bottom + reg_catch + 1; /* type */ - DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv1)); -#if defined(DUK_USE_FASTINT) - DUK_ASSERT(DUK_TVAL_IS_FASTINT(tv1)); - cont_type = (duk_small_uint_t) DUK_TVAL_GET_FASTINT_U32(tv1); -#else - cont_type = (duk_small_uint_t) DUK_TVAL_GET_NUMBER(tv1); -#endif - - tv1--; /* value */ - - switch (cont_type) { - case DUK_LJ_TYPE_NORMAL: { - DUK_DDD(DUK_DDDPRINT("ENDFIN: finally part finishing with 'normal' (non-abrupt) completion -> " - "dismantle catcher, resume execution after ENDFIN")); - - duk_hthread_catcher_unwind_norz(thr, act); - /* no need to unwind callstack */ - return 0; /* restart execution */ - } - case DUK_LJ_TYPE_RETURN: { - DUK_DDD(DUK_DDDPRINT("ENDFIN: finally part finishing with 'return' complation -> dismantle " - "catcher, handle return, lj.value1=%!T", - tv1)); - - /* Not necessary to unwind catch stack: return handling will - * do it. The finally flag of 'cat' is no longer set. The - * catch flag may be set, but it's not checked by return handling. - */ - - duk_push_tval(thr, tv1); - ret_result = duk__handle_return(thr, entry_act); - if (ret_result == DUK__RETHAND_RESTART) { - return 0; /* restart execution */ - } - DUK_ASSERT(ret_result == DUK__RETHAND_FINISHED); - - DUK_DDD(DUK_DDDPRINT("exiting executor after ENDFIN and RETURN (pseudo) longjmp type")); - return 1; /* exit executor */ - } - case DUK_LJ_TYPE_BREAK: - case DUK_LJ_TYPE_CONTINUE: { - duk_uint_t label_id; - duk_small_uint_t lj_type; - - /* Not necessary to unwind catch stack: break/continue - * handling will do it. The finally flag of 'cat' is - * no longer set. The catch flag may be set, but it's - * not checked by break/continue handling. - */ - - DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv1)); -#if defined(DUK_USE_FASTINT) - DUK_ASSERT(DUK_TVAL_IS_FASTINT(tv1)); - label_id = (duk_small_uint_t) DUK_TVAL_GET_FASTINT_U32(tv1); -#else - label_id = (duk_small_uint_t) DUK_TVAL_GET_NUMBER(tv1); -#endif - lj_type = cont_type; - duk__handle_break_or_continue(thr, label_id, lj_type); - return 0; /* restart execution */ - } - default: { - DUK_DDD(DUK_DDDPRINT("ENDFIN: finally part finishing with abrupt completion, lj_type=%ld -> " - "dismantle catcher, re-throw error", - (long) cont_type)); - - duk_err_setup_ljstate1(thr, (duk_small_uint_t) cont_type, tv1); - /* No debugger Throw notify check on purpose (rethrow). */ - - DUK_ASSERT(thr->heap->lj.jmpbuf_ptr != NULL); /* always in executor */ - duk_err_longjmp(thr); - DUK_UNREACHABLE(); - } - } - - DUK_UNREACHABLE(); - return 0; -} - -DUK_LOCAL DUK_EXEC_NOINLINE_PERF void duk__handle_op_initenum(duk_hthread *thr, duk_uint_fast32_t ins) { - duk_small_uint_t b; - duk_small_uint_t c; - - /* - * Enumeration semantics come from for-in statement, E5 Section 12.6.4. - * If called with 'null' or 'undefined', this opcode returns 'null' as - * the enumerator, which is special cased in NEXTENUM. This simplifies - * the compiler part - */ - - /* B -> register for writing enumerator object - * C -> value to be enumerated (register) - */ - b = DUK_DEC_B(ins); - c = DUK_DEC_C(ins); - - if (duk_is_null_or_undefined(thr, (duk_idx_t) c)) { - duk_push_null(thr); - duk_replace(thr, (duk_idx_t) b); - } else { - duk_dup(thr, (duk_idx_t) c); - duk_to_object(thr, -1); - duk_hobject_enumerator_create(thr, 0 /*enum_flags*/); /* [ ... val ] --> [ ... enum ] */ - duk_replace(thr, (duk_idx_t) b); - } -} - -DUK_LOCAL DUK_EXEC_NOINLINE_PERF duk_small_uint_t duk__handle_op_nextenum(duk_hthread *thr, duk_uint_fast32_t ins) { - duk_small_uint_t b; - duk_small_uint_t c; - duk_small_uint_t pc_skip = 0; - - /* - * NEXTENUM checks whether the enumerator still has unenumerated - * keys. If so, the next key is loaded to the target register - * and the next instruction is skipped. Otherwise the next instruction - * will be executed, jumping out of the enumeration loop. - */ - - /* B -> target register for next key - * C -> enum register - */ - b = DUK_DEC_B(ins); - c = DUK_DEC_C(ins); - - DUK_DDD(DUK_DDDPRINT("NEXTENUM: b->%!T, c->%!T", - (duk_tval *) duk_get_tval(thr, (duk_idx_t) b), - (duk_tval *) duk_get_tval(thr, (duk_idx_t) c))); - - if (duk_is_object(thr, (duk_idx_t) c)) { - /* XXX: assert 'c' is an enumerator */ - duk_dup(thr, (duk_idx_t) c); - if (duk_hobject_enumerator_next(thr, 0 /*get_value*/)) { - /* [ ... enum ] -> [ ... next_key ] */ - DUK_DDD(DUK_DDDPRINT("enum active, next key is %!T, skip jump slot ", (duk_tval *) duk_get_tval(thr, -1))); - pc_skip = 1; - } else { - /* [ ... enum ] -> [ ... ] */ - DUK_DDD(DUK_DDDPRINT("enum finished, execute jump slot")); - DUK_ASSERT(DUK_TVAL_IS_UNDEFINED(thr->valstack_top)); /* valstack policy */ - thr->valstack_top++; - } - duk_replace(thr, (duk_idx_t) b); - } else { - /* 'null' enumerator case -> behave as with an empty enumerator */ - DUK_ASSERT(duk_is_null(thr, (duk_idx_t) c)); - DUK_DDD(DUK_DDDPRINT("enum is null, execute jump slot")); - } - - return pc_skip; -} - -/* - * Call handling helpers. - */ - -DUK_LOCAL duk_bool_t duk__executor_handle_call(duk_hthread *thr, duk_idx_t idx, duk_idx_t nargs, duk_small_uint_t call_flags) { - duk_bool_t rc; - - duk_set_top_unsafe(thr, (duk_idx_t) (idx + nargs + 2)); /* [ ... func this arg1 ... argN ] */ - - /* Attempt an Ecma-to-Ecma call setup. If the call - * target is (directly or indirectly) Reflect.construct(), - * the call may change into a constructor call on the fly. - */ - rc = (duk_bool_t) duk_handle_call_unprotected(thr, idx, call_flags); - if (rc != 0) { - /* Ecma-to-ecma call possible, may or may not - * be a tail call. Avoid C recursion by - * reusing current executor instance. - */ - DUK_DDD(DUK_DDDPRINT("ecma-to-ecma call setup possible, restart execution")); - /* curr_pc synced by duk_handle_call_unprotected() */ - DUK_ASSERT(thr->ptr_curr_pc == NULL); - return rc; - } else { - /* Call was handled inline. */ - } - DUK_ASSERT(thr->ptr_curr_pc != NULL); - return rc; -} - -/* - * ECMAScript bytecode executor. - * - * Resume execution for the current thread from its current activation. - * Returns when execution would return from the entry level activation, - * leaving a single return value on top of the stack. Function calls - * and thread resumptions are handled internally. If an error occurs, - * a longjmp() with type DUK_LJ_TYPE_THROW is called on the entry level - * setjmp() jmpbuf. - * - * ECMAScript function calls and coroutine resumptions are handled - * internally (by the outer executor function) without recursive C calls. - * Other function calls are handled using duk_handle_call(), increasing - * C recursion depth. - * - * Abrupt completions (= long control tranfers) are handled either - * directly by reconfiguring relevant stacks and restarting execution, - * or via a longjmp. Longjmp-free handling is preferable for performance - * (especially Emscripten performance), and is used for: break, continue, - * and return. - * - * For more detailed notes, see doc/execution.rst. - * - * Also see doc/code-issues.rst for discussion of setjmp(), longjmp(), - * and volatile. - */ - -/* Presence of 'fun' is config based, there's a marginal performance - * difference and the best option is architecture dependent. - */ -#if defined(DUK_USE_EXEC_FUN_LOCAL) -#define DUK__FUN() fun -#else -#define DUK__FUN() ((duk_hcompfunc *) DUK_ACT_GET_FUNC((thr)->callstack_curr)) -#endif - -/* Strict flag. */ -#define DUK__STRICT() ((duk_small_uint_t) DUK_HOBJECT_HAS_STRICT((duk_hobject *) DUK__FUN())) - -/* Reg/const access macros: these are very footprint and performance sensitive - * so modify with care. Arguments are sometimes evaluated multiple times which - * is not ideal. - */ -#define DUK__REG(x) (*(thr->valstack_bottom + (x))) -#define DUK__REGP(x) (thr->valstack_bottom + (x)) -#define DUK__CONST(x) (*(consts + (x))) -#define DUK__CONSTP(x) (consts + (x)) - -/* Reg/const access macros which take the 32-bit instruction and avoid an - * explicit field decoding step by using shifts and masks. These must be - * kept in sync with duk_js_bytecode.h. The shift/mask values are chosen - * so that 'ins' can be shifted and masked and used as a -byte- offset - * instead of a duk_tval offset which needs further shifting (which is an - * issue on some, but not all, CPUs). - */ -#define DUK__RCBIT_B DUK_BC_REGCONST_B -#define DUK__RCBIT_C DUK_BC_REGCONST_C -#if defined(DUK_USE_EXEC_REGCONST_OPTIMIZE) -#if defined(DUK_USE_PACKED_TVAL) -#define DUK__TVAL_SHIFT 3 /* sizeof(duk_tval) == 8 */ -#else -#define DUK__TVAL_SHIFT 4 /* sizeof(duk_tval) == 16; not always the case so also asserted for */ -#endif -#define DUK__SHIFT_A (DUK_BC_SHIFT_A - DUK__TVAL_SHIFT) -#define DUK__SHIFT_B (DUK_BC_SHIFT_B - DUK__TVAL_SHIFT) -#define DUK__SHIFT_C (DUK_BC_SHIFT_C - DUK__TVAL_SHIFT) -#define DUK__SHIFT_BC (DUK_BC_SHIFT_BC - DUK__TVAL_SHIFT) -#define DUK__MASK_A (DUK_BC_UNSHIFTED_MASK_A << DUK__TVAL_SHIFT) -#define DUK__MASK_B (DUK_BC_UNSHIFTED_MASK_B << DUK__TVAL_SHIFT) -#define DUK__MASK_C (DUK_BC_UNSHIFTED_MASK_C << DUK__TVAL_SHIFT) -#define DUK__MASK_BC (DUK_BC_UNSHIFTED_MASK_BC << DUK__TVAL_SHIFT) -#define DUK__BYTEOFF_A(ins) (((ins) >> DUK__SHIFT_A) & DUK__MASK_A) -#define DUK__BYTEOFF_B(ins) (((ins) >> DUK__SHIFT_B) & DUK__MASK_B) -#define DUK__BYTEOFF_C(ins) (((ins) >> DUK__SHIFT_C) & DUK__MASK_C) -#define DUK__BYTEOFF_BC(ins) (((ins) >> DUK__SHIFT_BC) & DUK__MASK_BC) - -#define DUK__REGP_A(ins) ((duk_tval *) (void *) ((duk_uint8_t *) thr->valstack_bottom + DUK__BYTEOFF_A((ins)))) -#define DUK__REGP_B(ins) ((duk_tval *) (void *) ((duk_uint8_t *) thr->valstack_bottom + DUK__BYTEOFF_B((ins)))) -#define DUK__REGP_C(ins) ((duk_tval *) (void *) ((duk_uint8_t *) thr->valstack_bottom + DUK__BYTEOFF_C((ins)))) -#define DUK__REGP_BC(ins) ((duk_tval *) (void *) ((duk_uint8_t *) thr->valstack_bottom + DUK__BYTEOFF_BC((ins)))) -#define DUK__CONSTP_A(ins) ((duk_tval *) (void *) ((duk_uint8_t *) consts + DUK__BYTEOFF_A((ins)))) -#define DUK__CONSTP_B(ins) ((duk_tval *) (void *) ((duk_uint8_t *) consts + DUK__BYTEOFF_B((ins)))) -#define DUK__CONSTP_C(ins) ((duk_tval *) (void *) ((duk_uint8_t *) consts + DUK__BYTEOFF_C((ins)))) -#define DUK__CONSTP_BC(ins) ((duk_tval *) (void *) ((duk_uint8_t *) consts + DUK__BYTEOFF_BC((ins)))) -#define DUK__REGCONSTP_B(ins) \ - ((duk_tval *) (void *) ((duk_uint8_t *) (((ins) &DUK__RCBIT_B) ? consts : thr->valstack_bottom) + DUK__BYTEOFF_B((ins)))) -#define DUK__REGCONSTP_C(ins) \ - ((duk_tval *) (void *) ((duk_uint8_t *) (((ins) &DUK__RCBIT_C) ? consts : thr->valstack_bottom) + DUK__BYTEOFF_C((ins)))) -#else /* DUK_USE_EXEC_REGCONST_OPTIMIZE */ -/* Safe alternatives, no assumption about duk_tval size. */ -#define DUK__REGP_A(ins) DUK__REGP(DUK_DEC_A((ins))) -#define DUK__REGP_B(ins) DUK__REGP(DUK_DEC_B((ins))) -#define DUK__REGP_C(ins) DUK__REGP(DUK_DEC_C((ins))) -#define DUK__REGP_BC(ins) DUK__REGP(DUK_DEC_BC((ins))) -#define DUK__CONSTP_A(ins) DUK__CONSTP(DUK_DEC_A((ins))) -#define DUK__CONSTP_B(ins) DUK__CONSTP(DUK_DEC_B((ins))) -#define DUK__CONSTP_C(ins) DUK__CONSTP(DUK_DEC_C((ins))) -#define DUK__CONSTP_BC(ins) DUK__CONSTP(DUK_DEC_BC((ins))) -#define DUK__REGCONSTP_B(ins) ((((ins) &DUK__RCBIT_B) ? consts : thr->valstack_bottom) + DUK_DEC_B((ins))) -#define DUK__REGCONSTP_C(ins) ((((ins) &DUK__RCBIT_C) ? consts : thr->valstack_bottom) + DUK_DEC_C((ins))) -#endif /* DUK_USE_EXEC_REGCONST_OPTIMIZE */ - -#if defined(DUK_USE_VERBOSE_EXECUTOR_ERRORS) -#define DUK__INTERNAL_ERROR(msg) \ - do { \ - DUK_ERROR_ERROR(thr, (msg)); \ - DUK_WO_NORETURN(return;); \ - } while (0) -#else -#define DUK__INTERNAL_ERROR(msg) \ - do { \ - goto internal_error; \ - } while (0) -#endif - -#define DUK__SYNC_CURR_PC() \ - do { \ - duk_activation *duk__act; \ - duk__act = thr->callstack_curr; \ - duk__act->curr_pc = curr_pc; \ - } while (0) -#define DUK__SYNC_AND_NULL_CURR_PC() \ - do { \ - duk_activation *duk__act; \ - duk__act = thr->callstack_curr; \ - duk__act->curr_pc = curr_pc; \ - thr->ptr_curr_pc = NULL; \ - } while (0) - -#if defined(DUK_USE_EXEC_PREFER_SIZE) -#define DUK__LOOKUP_INDIRECT(idx) \ - do { \ - (idx) = (duk_uint_fast_t) duk_get_uint(thr, (duk_idx_t) (idx)); \ - } while (0) -#elif defined(DUK_USE_FASTINT) -#define DUK__LOOKUP_INDIRECT(idx) \ - do { \ - duk_tval *tv_ind; \ - tv_ind = DUK__REGP((idx)); \ - DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv_ind)); \ - DUK_ASSERT(DUK_TVAL_IS_FASTINT(tv_ind)); /* compiler guarantees */ \ - (idx) = (duk_uint_fast_t) DUK_TVAL_GET_FASTINT_U32(tv_ind); \ - } while (0) -#else -#define DUK__LOOKUP_INDIRECT(idx) \ - do { \ - duk_tval *tv_ind; \ - tv_ind = DUK__REGP(idx); \ - DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv_ind)); \ - idx = (duk_uint_fast_t) DUK_TVAL_GET_NUMBER(tv_ind); \ - } while (0) -#endif - -DUK_LOCAL void duk__handle_executor_error(duk_heap *heap, - duk_activation *entry_act, - duk_int_t entry_call_recursion_depth, - duk_jmpbuf *entry_jmpbuf_ptr, - volatile duk_bool_t *out_delayed_catch_setup) { - duk_small_uint_t lj_ret; - - /* Longjmp callers are required to sync-and-null thr->ptr_curr_pc - * before longjmp. - */ - DUK_ASSERT(heap->curr_thread != NULL); - DUK_ASSERT(heap->curr_thread->ptr_curr_pc == NULL); - - /* XXX: signalling the need to shrink check (only if unwound) */ - - /* Must be restored here to handle e.g. yields properly. */ - heap->call_recursion_depth = entry_call_recursion_depth; - - /* Switch to caller's setjmp() catcher so that if an error occurs - * during error handling, it is always propagated outwards instead - * of causing an infinite loop in our own handler. - */ - heap->lj.jmpbuf_ptr = (duk_jmpbuf *) entry_jmpbuf_ptr; - - lj_ret = duk__handle_longjmp(heap->curr_thread, entry_act, out_delayed_catch_setup); - - /* Error handling complete, remove side effect protections. - */ -#if defined(DUK_USE_ASSERTIONS) - DUK_ASSERT(heap->error_not_allowed == 1); - heap->error_not_allowed = 0; -#endif - DUK_ASSERT(heap->pf_prevent_count > 0); - heap->pf_prevent_count--; - DUK_DD(DUK_DDPRINT("executor error handled, pf_prevent_count updated to %ld", (long) heap->pf_prevent_count)); - - if (lj_ret == DUK__LONGJMP_RESTART) { - /* Restart bytecode execution, possibly with a changed thread. */ - DUK_REFZERO_CHECK_SLOW(heap->curr_thread); - } else { - /* If an error is propagated, don't run refzero checks here. - * The next catcher will deal with that. Pf_prevent_count - * will be re-bumped by the longjmp. - */ - - DUK_ASSERT(lj_ret == DUK__LONGJMP_RETHROW); /* Rethrow error to calling state. */ - DUK_ASSERT(heap->lj.jmpbuf_ptr == entry_jmpbuf_ptr); /* Longjmp handling has restored jmpbuf_ptr. */ - - /* Thread may have changed, e.g. YIELD converted to THROW. */ - duk_err_longjmp(heap->curr_thread); - DUK_UNREACHABLE(); - } -} - -/* Outer executor with setjmp/longjmp handling. */ -DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) { - /* Entry level info. */ - duk_hthread *entry_thread; - duk_activation *entry_act; - duk_int_t entry_call_recursion_depth; - duk_jmpbuf *entry_jmpbuf_ptr; - duk_jmpbuf our_jmpbuf; - duk_heap *heap; - volatile duk_bool_t delayed_catch_setup = 0; - - DUK_ASSERT(exec_thr != NULL); - DUK_ASSERT(exec_thr->heap != NULL); - DUK_ASSERT(exec_thr->heap->curr_thread != NULL); - DUK_ASSERT_REFCOUNT_NONZERO_HEAPHDR((duk_heaphdr *) exec_thr); - DUK_ASSERT(exec_thr->callstack_top >= 1); /* at least one activation, ours */ - DUK_ASSERT(exec_thr->callstack_curr != NULL); - DUK_ASSERT(DUK_ACT_GET_FUNC(exec_thr->callstack_curr) != NULL); - DUK_ASSERT(DUK_HOBJECT_IS_COMPFUNC(DUK_ACT_GET_FUNC(exec_thr->callstack_curr))); - - DUK_GC_TORTURE(exec_thr->heap); - - entry_thread = exec_thr; - heap = entry_thread->heap; - entry_act = entry_thread->callstack_curr; - DUK_ASSERT(entry_act != NULL); - entry_call_recursion_depth = entry_thread->heap->call_recursion_depth; - entry_jmpbuf_ptr = entry_thread->heap->lj.jmpbuf_ptr; - - /* - * Note: we currently assume that the setjmp() catchpoint is - * not re-entrant (longjmp() cannot be called more than once - * for a single setjmp()). - * - * See doc/code-issues.rst for notes on variable assignment - * before and after setjmp(). - */ - - for (;;) { - heap->lj.jmpbuf_ptr = &our_jmpbuf; - DUK_ASSERT(heap->lj.jmpbuf_ptr != NULL); - -#if defined(DUK_USE_CPP_EXCEPTIONS) - try { -#else - DUK_ASSERT(heap->lj.jmpbuf_ptr == &our_jmpbuf); - if (DUK_SETJMP(our_jmpbuf.jb) == 0) { -#endif - DUK_DDD(DUK_DDDPRINT("after setjmp, delayed catch setup: %ld\n", (long) delayed_catch_setup)); - - if (DUK_UNLIKELY(delayed_catch_setup != 0)) { - duk_hthread *thr = entry_thread->heap->curr_thread; - - delayed_catch_setup = 0; - duk__handle_catch_part2(thr); - DUK_ASSERT(delayed_catch_setup == 0); - DUK_DDD(DUK_DDDPRINT("top after delayed catch setup: %ld", (long) duk_get_top(entry_thread))); - } - - /* Execute bytecode until returned or longjmp(). */ - duk__js_execute_bytecode_inner(entry_thread, entry_act); - - /* Successful return: restore jmpbuf and return to caller. */ - heap->lj.jmpbuf_ptr = entry_jmpbuf_ptr; - - return; -#if defined(DUK_USE_CPP_EXCEPTIONS) - } catch (duk_internal_exception &exc) { -#else - } else { -#endif -#if defined(DUK_USE_CPP_EXCEPTIONS) - DUK_UNREF(exc); -#endif - DUK_DDD(DUK_DDDPRINT("longjmp caught by bytecode executor")); - DUK_STATS_INC(exec_thr->heap, stats_exec_throw); - - duk__handle_executor_error(heap, - entry_act, - entry_call_recursion_depth, - entry_jmpbuf_ptr, - &delayed_catch_setup); - } -#if defined(DUK_USE_CPP_EXCEPTIONS) - catch (duk_fatal_exception &exc) { - DUK_D(DUK_DPRINT("rethrow duk_fatal_exception")); - DUK_UNREF(exc); - throw; - } catch (std::exception &exc) { - const char *what = exc.what(); - if (!what) { - what = "unknown"; - } - DUK_D(DUK_DPRINT("unexpected c++ std::exception (perhaps thrown by user code)")); - DUK_STATS_INC(exec_thr->heap, stats_exec_throw); - try { - DUK_ASSERT(heap->curr_thread != NULL); - DUK_ERROR_FMT1(heap->curr_thread, - DUK_ERR_TYPE_ERROR, - "caught invalid c++ std::exception '%s' (perhaps thrown by user code)", - what); - DUK_WO_NORETURN(return;); - } catch (duk_internal_exception exc) { - DUK_D(DUK_DPRINT("caught api error thrown from unexpected c++ std::exception")); - DUK_UNREF(exc); - duk__handle_executor_error(heap, - entry_act, - entry_call_recursion_depth, - entry_jmpbuf_ptr, - &delayed_catch_setup); - } - } catch (...) { - DUK_D(DUK_DPRINT("unexpected c++ exception (perhaps thrown by user code)")); - DUK_STATS_INC(exec_thr->heap, stats_exec_throw); - try { - DUK_ASSERT(heap->curr_thread != NULL); - DUK_ERROR_TYPE(heap->curr_thread, "caught invalid c++ exception (perhaps thrown by user code)"); - DUK_WO_NORETURN(return;); - } catch (duk_internal_exception exc) { - DUK_D(DUK_DPRINT("caught api error thrown from unexpected c++ exception")); - DUK_UNREF(exc); - duk__handle_executor_error(heap, - entry_act, - entry_call_recursion_depth, - entry_jmpbuf_ptr, - &delayed_catch_setup); - } - } -#endif - } - - DUK_WO_NORETURN(return;); -} - -/* Inner executor, performance critical. */ -DUK_LOCAL DUK_NOINLINE DUK_HOT void duk__js_execute_bytecode_inner(duk_hthread *entry_thread, duk_activation *entry_act) { - /* Current PC, accessed by other functions through thr->ptr_to_curr_pc. - * Critical for performance. It would be safest to make this volatile, - * but that eliminates performance benefits; aliasing guarantees - * should be enough though. - */ - duk_instr_t *curr_pc; /* bytecode has a stable pointer */ - - /* Hot variables for interpretation. Critical for performance, - * but must add sparingly to minimize register shuffling. - */ - duk_hthread *thr; /* stable */ - duk_tval *consts; /* stable */ - duk_uint_fast32_t ins; - /* 'funcs' is quite rarely used, so no local for it */ -#if defined(DUK_USE_EXEC_FUN_LOCAL) - duk_hcompfunc *fun; -#else - /* 'fun' is quite rarely used, so no local for it */ -#endif - -#if defined(DUK_USE_INTERRUPT_COUNTER) - duk_int_t int_ctr; -#endif - -#if defined(DUK_USE_ASSERTIONS) - duk_size_t valstack_top_base; /* valstack top, should match before interpreting each op (no leftovers) */ -#endif - - /* Optimized reg/const access macros assume sizeof(duk_tval) to be - * either 8 or 16. Heap allocation checks this even without asserts - * enabled now because it can't be autodetected in duk_config.h. - */ -#if 1 -#if defined(DUK_USE_PACKED_TVAL) - DUK_ASSERT(sizeof(duk_tval) == 8); -#else - DUK_ASSERT(sizeof(duk_tval) == 16); -#endif -#endif - - DUK_GC_TORTURE(entry_thread->heap); - - /* - * Restart execution by reloading thread state. - * - * Note that 'thr' and any thread configuration may have changed, - * so all local variables are suspect and we need to reinitialize. - * - * The number of local variables should be kept to a minimum: if - * the variables are spilled, they will need to be loaded from - * memory anyway. - * - * Any 'goto restart_execution;' code path in opcode dispatch must - * ensure 'curr_pc' is synced back to act->curr_pc before the goto - * takes place. - * - * The interpreter must be very careful with memory pointers, as - * many pointers are not guaranteed to be 'stable' and may be - * reallocated and relocated on-the-fly quite easily (e.g. by a - * memory allocation or a property access). - * - * The following are assumed to have stable pointers: - * - the current thread - * - the current function - * - the bytecode, constant table, inner function table of the - * current function (as they are a part of the function allocation) - * - * The following are assumed to have semi-stable pointers: - * - the current activation entry: stable as long as callstack - * is not changed (reallocated by growing or shrinking), or - * by any garbage collection invocation (through finalizers) - * - Note in particular that ANY DECREF can invalidate the - * activation pointer, so for the most part a fresh lookup - * is required - * - * The following are not assumed to have stable pointers at all: - * - the value stack (registers) of the current thread - * - * See execution.rst for discussion. - */ - -restart_execution: - - /* Lookup current thread; use the stable 'entry_thread' for this to - * avoid clobber warnings. Any valid, reachable 'thr' value would be - * fine for this, so using 'entry_thread' is just to silence warnings. - */ - thr = entry_thread->heap->curr_thread; - DUK_ASSERT(thr != NULL); - DUK_ASSERT(thr->callstack_top >= 1); - DUK_ASSERT(thr->callstack_curr != NULL); - DUK_ASSERT(DUK_ACT_GET_FUNC(thr->callstack_curr) != NULL); - DUK_ASSERT(DUK_HOBJECT_IS_COMPFUNC(DUK_ACT_GET_FUNC(thr->callstack_curr))); - - DUK_GC_TORTURE(thr->heap); - - thr->ptr_curr_pc = &curr_pc; - - /* Relookup and initialize dispatch loop variables. Debugger check. */ - { - duk_activation *act; -#if !defined(DUK_USE_EXEC_FUN_LOCAL) - duk_hcompfunc *fun; -#endif - - /* Assume interrupt init/counter are properly initialized here. */ - /* Assume that thr->valstack_bottom has been set-up before getting here. */ - - act = thr->callstack_curr; - DUK_ASSERT(act != NULL); - fun = (duk_hcompfunc *) DUK_ACT_GET_FUNC(act); - DUK_ASSERT(fun != NULL); - DUK_ASSERT(thr->valstack_top - thr->valstack_bottom == fun->nregs); - consts = DUK_HCOMPFUNC_GET_CONSTS_BASE(thr->heap, fun); - DUK_ASSERT(consts != NULL); - -#if defined(DUK_USE_DEBUGGER_SUPPORT) - if (DUK_UNLIKELY(duk_debug_is_attached(thr->heap) && !thr->heap->dbg_processing)) { - duk__executor_recheck_debugger(thr, act, fun); - DUK_ASSERT(act == thr->callstack_curr); - DUK_ASSERT(act != NULL); - } -#endif /* DUK_USE_DEBUGGER_SUPPORT */ - -#if defined(DUK_USE_ASSERTIONS) - valstack_top_base = (duk_size_t) (thr->valstack_top - thr->valstack); -#endif - - /* Set up curr_pc for opcode dispatch. */ - curr_pc = act->curr_pc; - } - - DUK_DD(DUK_DDPRINT("restarting execution, thr %p, act idx %ld, fun %p," - "consts %p, funcs %p, lev %ld, regbot %ld, regtop %ld, " - "preventcount=%ld", - (void *) thr, - (long) (thr->callstack_top - 1), - (void *) DUK__FUN(), - (void *) DUK_HCOMPFUNC_GET_CONSTS_BASE(thr->heap, DUK__FUN()), - (void *) DUK_HCOMPFUNC_GET_FUNCS_BASE(thr->heap, DUK__FUN()), - (long) (thr->callstack_top - 1), - (long) (thr->valstack_bottom - thr->valstack), - (long) (thr->valstack_top - thr->valstack), - (long) thr->callstack_preventcount)); - - /* Dispatch loop. */ - - for (;;) { - duk_uint8_t op; - - DUK_ASSERT(thr->callstack_top >= 1); - DUK_ASSERT(thr->valstack_top - thr->valstack_bottom == DUK__FUN()->nregs); - DUK_ASSERT((duk_size_t) (thr->valstack_top - thr->valstack) == valstack_top_base); - - /* Executor interrupt counter check, used to implement breakpoints, - * debugging interface, execution timeouts, etc. The counter is heap - * specific but is maintained in the current thread to make the check - * as fast as possible. The counter is copied back to the heap struct - * whenever a thread switch occurs by the DUK_HEAP_SWITCH_THREAD() macro. - */ -#if defined(DUK_USE_INTERRUPT_COUNTER) - int_ctr = thr->interrupt_counter; - if (DUK_LIKELY(int_ctr > 0)) { - thr->interrupt_counter = int_ctr - 1; - } else { - /* Trigger at zero or below */ - duk_small_uint_t exec_int_ret; - - DUK_STATS_INC(thr->heap, stats_exec_interrupt); - - /* Write curr_pc back for the debugger. */ - { - duk_activation *act; - DUK_ASSERT(thr->callstack_top > 0); - act = thr->callstack_curr; - DUK_ASSERT(act != NULL); - act->curr_pc = (duk_instr_t *) curr_pc; - } - - /* Forced restart caused by a function return; must recheck - * debugger breakpoints before checking line transitions, - * see GH-303. Restart and then handle interrupt_counter - * zero again. - */ -#if defined(DUK_USE_DEBUGGER_SUPPORT) - if (thr->heap->dbg_force_restart) { - DUK_DD(DUK_DDPRINT("dbg_force_restart flag forced restart execution")); /* GH-303 */ - thr->heap->dbg_force_restart = 0; - goto restart_execution; - } -#endif - - exec_int_ret = duk__executor_interrupt(thr); - if (exec_int_ret == DUK__INT_RESTART) { - /* curr_pc synced back above */ - goto restart_execution; - } - } -#endif /* DUK_USE_INTERRUPT_COUNTER */ -#if defined(DUK_USE_INTERRUPT_COUNTER) && defined(DUK_USE_DEBUG) - /* For cross-checking during development: ensure dispatch count - * matches cumulative interrupt counter init value sums. - */ - thr->heap->inst_count_exec++; -#endif - -#if defined(DUK_USE_ASSERTIONS) || defined(DUK_USE_DEBUG) - { - duk_activation *act; - act = thr->callstack_curr; - DUK_ASSERT(curr_pc >= DUK_HCOMPFUNC_GET_CODE_BASE(thr->heap, DUK__FUN())); - DUK_ASSERT(curr_pc < DUK_HCOMPFUNC_GET_CODE_END(thr->heap, DUK__FUN())); - DUK_UNREF(act); /* if debugging disabled */ - - DUK_DDD(DUK_DDDPRINT( - "executing bytecode: pc=%ld, ins=0x%08lx, op=%ld, valstack_top=%ld/%ld, nregs=%ld --> %!I", - (long) (curr_pc - DUK_HCOMPFUNC_GET_CODE_BASE(thr->heap, DUK__FUN())), - (unsigned long) *curr_pc, - (long) DUK_DEC_OP(*curr_pc), - (long) (thr->valstack_top - thr->valstack), - (long) (thr->valstack_end - thr->valstack), - (long) (DUK__FUN() ? DUK__FUN()->nregs : -1), - (duk_instr_t) *curr_pc)); - } -#endif - -#if defined(DUK_USE_ASSERTIONS) - /* Quite heavy assert: check valstack policy. Improper - * shuffle instructions can write beyond valstack_top/end - * so this check catches them in the act. - */ - { - duk_tval *tv; - tv = thr->valstack_top; - while (tv != thr->valstack_end) { - DUK_ASSERT(DUK_TVAL_IS_UNDEFINED(tv)); - tv++; - } - } -#endif - - ins = *curr_pc++; - DUK_STATS_INC(thr->heap, stats_exec_opcodes); - - /* Typing: use duk_small_(u)int_fast_t when decoding small - * opcode fields (op, A, B, C, BC) which fit into 16 bits - * and duk_(u)int_fast_t when decoding larger fields (e.g. - * ABC). Use unsigned variant by default, signed when the - * value is used in signed arithmetic. Using variable names - * such as 'a', 'b', 'c', 'bc', etc makes it easier to spot - * typing mismatches. - */ - - /* Switch based on opcode. Cast to 8-bit unsigned value and - * use a fully populated case clauses so that the compiler - * will (at least usually) omit a bounds check. - */ - op = (duk_uint8_t) DUK_DEC_OP(ins); - switch (op) { - /* Some useful macros. These access inner executor variables - * directly so they only apply within the executor. - */ -#if defined(DUK_USE_EXEC_PREFER_SIZE) -#define DUK__REPLACE_TOP_A_BREAK() \ - { goto replace_top_a; } -#define DUK__REPLACE_TOP_BC_BREAK() \ - { goto replace_top_bc; } -#define DUK__REPLACE_BOOL_A_BREAK(bval) \ - { \ - duk_bool_t duk__bval; \ - duk__bval = (bval); \ - DUK_ASSERT(duk__bval == 0 || duk__bval == 1); \ - duk_push_boolean(thr, duk__bval); \ - DUK__REPLACE_TOP_A_BREAK(); \ - } -#else -#define DUK__REPLACE_TOP_A_BREAK() \ - { \ - DUK__REPLACE_TO_TVPTR(thr, DUK__REGP_A(ins)); \ - break; \ - } -#define DUK__REPLACE_TOP_BC_BREAK() \ - { \ - DUK__REPLACE_TO_TVPTR(thr, DUK__REGP_BC(ins)); \ - break; \ - } -#define DUK__REPLACE_BOOL_A_BREAK(bval) \ - { \ - duk_bool_t duk__bval; \ - duk_tval *duk__tvdst; \ - duk__bval = (bval); \ - DUK_ASSERT(duk__bval == 0 || duk__bval == 1); \ - duk__tvdst = DUK__REGP_A(ins); \ - DUK_TVAL_SET_BOOLEAN_UPDREF(thr, duk__tvdst, duk__bval); \ - break; \ - } -#endif - - /* XXX: 12 + 12 bit variant might make sense too, for both reg and - * const loads. - */ - - /* For LDREG, STREG, LDCONST footprint optimized variants would just - * duk_dup() + duk_replace(), but because they're used quite a lot - * they're currently intentionally not size optimized. - */ - case DUK_OP_LDREG: { - duk_tval *tv1, *tv2; - - tv1 = DUK__REGP_A(ins); - tv2 = DUK__REGP_BC(ins); - DUK_TVAL_SET_TVAL_UPDREF_FAST(thr, tv1, tv2); /* side effects */ - break; - } - - case DUK_OP_STREG: { - duk_tval *tv1, *tv2; - - tv1 = DUK__REGP_A(ins); - tv2 = DUK__REGP_BC(ins); - DUK_TVAL_SET_TVAL_UPDREF_FAST(thr, tv2, tv1); /* side effects */ - break; - } - - case DUK_OP_LDCONST: { - duk_tval *tv1, *tv2; - - tv1 = DUK__REGP_A(ins); - tv2 = DUK__CONSTP_BC(ins); - DUK_TVAL_SET_TVAL_UPDREF_FAST(thr, tv1, tv2); /* side effects */ - break; - } - - /* LDINT and LDINTX are intended to load an arbitrary signed - * 32-bit value. Only an LDINT+LDINTX sequence is supported. - * This also guarantees all values remain fastints. - */ -#if defined(DUK_USE_EXEC_PREFER_SIZE) - case DUK_OP_LDINT: { - duk_int32_t val; - - val = (duk_int32_t) DUK_DEC_BC(ins) - (duk_int32_t) DUK_BC_LDINT_BIAS; - duk_push_int(thr, val); - DUK__REPLACE_TOP_A_BREAK(); - } - case DUK_OP_LDINTX: { - duk_int32_t val; - - val = (duk_int32_t) duk_get_int(thr, DUK_DEC_A(ins)); - val = (val << DUK_BC_LDINTX_SHIFT) + (duk_int32_t) DUK_DEC_BC(ins); /* no bias */ - duk_push_int(thr, val); - DUK__REPLACE_TOP_A_BREAK(); - } -#else /* DUK_USE_EXEC_PREFER_SIZE */ - case DUK_OP_LDINT: { - duk_tval *tv1; - duk_int32_t val; - - val = (duk_int32_t) DUK_DEC_BC(ins) - (duk_int32_t) DUK_BC_LDINT_BIAS; - tv1 = DUK__REGP_A(ins); - DUK_TVAL_SET_I32_UPDREF(thr, tv1, val); /* side effects */ - break; - } - case DUK_OP_LDINTX: { - duk_tval *tv1; - duk_int32_t val; - - tv1 = DUK__REGP_A(ins); - DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv1)); -#if defined(DUK_USE_FASTINT) - DUK_ASSERT(DUK_TVAL_IS_FASTINT(tv1)); - val = DUK_TVAL_GET_FASTINT_I32(tv1); -#else - /* XXX: fast double-to-int conversion, we know number is integer in [-0x80000000,0xffffffff]. */ - val = (duk_int32_t) DUK_TVAL_GET_NUMBER(tv1); -#endif - val = - (duk_int32_t) ((duk_uint32_t) val << DUK_BC_LDINTX_SHIFT) + (duk_int32_t) DUK_DEC_BC(ins); /* no bias */ - DUK_TVAL_SET_I32_UPDREF(thr, tv1, val); /* side effects */ - break; - } -#endif /* DUK_USE_EXEC_PREFER_SIZE */ - -#if defined(DUK_USE_EXEC_PREFER_SIZE) - case DUK_OP_LDTHIS: { - duk_push_this(thr); - DUK__REPLACE_TOP_BC_BREAK(); - } - case DUK_OP_LDUNDEF: { - duk_to_undefined(thr, (duk_idx_t) DUK_DEC_BC(ins)); - break; - } - case DUK_OP_LDNULL: { - duk_to_null(thr, (duk_idx_t) DUK_DEC_BC(ins)); - break; - } - case DUK_OP_LDTRUE: { - duk_push_true(thr); - DUK__REPLACE_TOP_BC_BREAK(); - } - case DUK_OP_LDFALSE: { - duk_push_false(thr); - DUK__REPLACE_TOP_BC_BREAK(); - } -#else /* DUK_USE_EXEC_PREFER_SIZE */ - case DUK_OP_LDTHIS: { - /* Note: 'this' may be bound to any value, not just an object */ - duk_tval *tv1, *tv2; - - tv1 = DUK__REGP_BC(ins); - tv2 = thr->valstack_bottom - 1; /* 'this binding' is just under bottom */ - DUK_ASSERT(tv2 >= thr->valstack); - DUK_TVAL_SET_TVAL_UPDREF_FAST(thr, tv1, tv2); /* side effects */ - break; - } - case DUK_OP_LDUNDEF: { - duk_tval *tv1; - - tv1 = DUK__REGP_BC(ins); - DUK_TVAL_SET_UNDEFINED_UPDREF(thr, tv1); /* side effects */ - break; - } - case DUK_OP_LDNULL: { - duk_tval *tv1; - - tv1 = DUK__REGP_BC(ins); - DUK_TVAL_SET_NULL_UPDREF(thr, tv1); /* side effects */ - break; - } - case DUK_OP_LDTRUE: { - duk_tval *tv1; - - tv1 = DUK__REGP_BC(ins); - DUK_TVAL_SET_BOOLEAN_UPDREF(thr, tv1, 1); /* side effects */ - break; - } - case DUK_OP_LDFALSE: { - duk_tval *tv1; - - tv1 = DUK__REGP_BC(ins); - DUK_TVAL_SET_BOOLEAN_UPDREF(thr, tv1, 0); /* side effects */ - break; - } -#endif /* DUK_USE_EXEC_PREFER_SIZE */ - - case DUK_OP_BNOT: { - duk__vm_bitwise_not(thr, DUK_DEC_BC(ins), DUK_DEC_A(ins)); - break; - } - - case DUK_OP_LNOT: { - duk__vm_logical_not(thr, DUK_DEC_BC(ins), DUK_DEC_A(ins)); - break; - } - -#if defined(DUK_USE_EXEC_PREFER_SIZE) - case DUK_OP_UNM: - case DUK_OP_UNP: { - duk__vm_arith_unary_op(thr, DUK_DEC_BC(ins), DUK_DEC_A(ins), op); - break; - } -#else /* DUK_USE_EXEC_PREFER_SIZE */ - case DUK_OP_UNM: { - duk__vm_arith_unary_op(thr, DUK_DEC_BC(ins), DUK_DEC_A(ins), DUK_OP_UNM); - break; - } - case DUK_OP_UNP: { - duk__vm_arith_unary_op(thr, DUK_DEC_BC(ins), DUK_DEC_A(ins), DUK_OP_UNP); - break; - } -#endif /* DUK_USE_EXEC_PREFER_SIZE */ - -#if defined(DUK_USE_EXEC_PREFER_SIZE) - case DUK_OP_TYPEOF: { - duk_small_uint_t stridx; - - stridx = duk_js_typeof_stridx(DUK__REGP_BC(ins)); - DUK_ASSERT_STRIDX_VALID(stridx); - duk_push_hstring_stridx(thr, stridx); - DUK__REPLACE_TOP_A_BREAK(); - } -#else /* DUK_USE_EXEC_PREFER_SIZE */ - case DUK_OP_TYPEOF: { - duk_tval *tv; - duk_small_uint_t stridx; - duk_hstring *h_str; - - tv = DUK__REGP_BC(ins); - stridx = duk_js_typeof_stridx(tv); - DUK_ASSERT_STRIDX_VALID(stridx); - h_str = DUK_HTHREAD_GET_STRING(thr, stridx); - tv = DUK__REGP_A(ins); - DUK_TVAL_SET_STRING_UPDREF(thr, tv, h_str); - break; - } -#endif /* DUK_USE_EXEC_PREFER_SIZE */ - - case DUK_OP_TYPEOFID: { - duk_small_uint_t stridx; -#if !defined(DUK_USE_EXEC_PREFER_SIZE) - duk_hstring *h_str; -#endif - duk_activation *act; - duk_hstring *name; - duk_tval *tv; - - /* A -> target register - * BC -> constant index of identifier name - */ - - tv = DUK__CONSTP_BC(ins); - DUK_ASSERT(DUK_TVAL_IS_STRING(tv)); - name = DUK_TVAL_GET_STRING(tv); - tv = NULL; /* lookup has side effects */ - act = thr->callstack_curr; - if (duk_js_getvar_activation(thr, act, name, 0 /*throw*/)) { - /* -> [... val this] */ - tv = DUK_GET_TVAL_NEGIDX(thr, -2); - stridx = duk_js_typeof_stridx(tv); - tv = NULL; /* no longer needed */ - duk_pop_2_unsafe(thr); - } else { - /* unresolvable, no stack changes */ - stridx = DUK_STRIDX_LC_UNDEFINED; - } - DUK_ASSERT_STRIDX_VALID(stridx); -#if defined(DUK_USE_EXEC_PREFER_SIZE) - duk_push_hstring_stridx(thr, stridx); - DUK__REPLACE_TOP_A_BREAK(); -#else /* DUK_USE_EXEC_PREFER_SIZE */ - h_str = DUK_HTHREAD_GET_STRING(thr, stridx); - tv = DUK__REGP_A(ins); - DUK_TVAL_SET_STRING_UPDREF(thr, tv, h_str); - break; -#endif /* DUK_USE_EXEC_PREFER_SIZE */ - } - - /* Equality: E5 Sections 11.9.1, 11.9.3 */ - -#define DUK__EQ_BODY(barg, carg) \ - { \ - duk_bool_t tmp; \ - tmp = duk_js_equals(thr, (barg), (carg)); \ - DUK_ASSERT(tmp == 0 || tmp == 1); \ - DUK__REPLACE_BOOL_A_BREAK(tmp); \ - } -#define DUK__NEQ_BODY(barg, carg) \ - { \ - duk_bool_t tmp; \ - tmp = duk_js_equals(thr, (barg), (carg)); \ - DUK_ASSERT(tmp == 0 || tmp == 1); \ - tmp ^= 1; \ - DUK__REPLACE_BOOL_A_BREAK(tmp); \ - } -#define DUK__SEQ_BODY(barg, carg) \ - { \ - duk_bool_t tmp; \ - tmp = duk_js_strict_equals((barg), (carg)); \ - DUK_ASSERT(tmp == 0 || tmp == 1); \ - DUK__REPLACE_BOOL_A_BREAK(tmp); \ - } -#define DUK__SNEQ_BODY(barg, carg) \ - { \ - duk_bool_t tmp; \ - tmp = duk_js_strict_equals((barg), (carg)); \ - DUK_ASSERT(tmp == 0 || tmp == 1); \ - tmp ^= 1; \ - DUK__REPLACE_BOOL_A_BREAK(tmp); \ - } -#if defined(DUK_USE_EXEC_PREFER_SIZE) - case DUK_OP_EQ_RR: - case DUK_OP_EQ_CR: - case DUK_OP_EQ_RC: - case DUK_OP_EQ_CC: - DUK__EQ_BODY(DUK__REGCONSTP_B(ins), DUK__REGCONSTP_C(ins)); - case DUK_OP_NEQ_RR: - case DUK_OP_NEQ_CR: - case DUK_OP_NEQ_RC: - case DUK_OP_NEQ_CC: - DUK__NEQ_BODY(DUK__REGCONSTP_B(ins), DUK__REGCONSTP_C(ins)); - case DUK_OP_SEQ_RR: - case DUK_OP_SEQ_CR: - case DUK_OP_SEQ_RC: - case DUK_OP_SEQ_CC: - DUK__SEQ_BODY(DUK__REGCONSTP_B(ins), DUK__REGCONSTP_C(ins)); - case DUK_OP_SNEQ_RR: - case DUK_OP_SNEQ_CR: - case DUK_OP_SNEQ_RC: - case DUK_OP_SNEQ_CC: - DUK__SNEQ_BODY(DUK__REGCONSTP_B(ins), DUK__REGCONSTP_C(ins)); -#else /* DUK_USE_EXEC_PREFER_SIZE */ - case DUK_OP_EQ_RR: - DUK__EQ_BODY(DUK__REGP_B(ins), DUK__REGP_C(ins)); - case DUK_OP_EQ_CR: - DUK__EQ_BODY(DUK__CONSTP_B(ins), DUK__REGP_C(ins)); - case DUK_OP_EQ_RC: - DUK__EQ_BODY(DUK__REGP_B(ins), DUK__CONSTP_C(ins)); - case DUK_OP_EQ_CC: - DUK__EQ_BODY(DUK__CONSTP_B(ins), DUK__CONSTP_C(ins)); - case DUK_OP_NEQ_RR: - DUK__NEQ_BODY(DUK__REGP_B(ins), DUK__REGP_C(ins)); - case DUK_OP_NEQ_CR: - DUK__NEQ_BODY(DUK__CONSTP_B(ins), DUK__REGP_C(ins)); - case DUK_OP_NEQ_RC: - DUK__NEQ_BODY(DUK__REGP_B(ins), DUK__CONSTP_C(ins)); - case DUK_OP_NEQ_CC: - DUK__NEQ_BODY(DUK__CONSTP_B(ins), DUK__CONSTP_C(ins)); - case DUK_OP_SEQ_RR: - DUK__SEQ_BODY(DUK__REGP_B(ins), DUK__REGP_C(ins)); - case DUK_OP_SEQ_CR: - DUK__SEQ_BODY(DUK__CONSTP_B(ins), DUK__REGP_C(ins)); - case DUK_OP_SEQ_RC: - DUK__SEQ_BODY(DUK__REGP_B(ins), DUK__CONSTP_C(ins)); - case DUK_OP_SEQ_CC: - DUK__SEQ_BODY(DUK__CONSTP_B(ins), DUK__CONSTP_C(ins)); - case DUK_OP_SNEQ_RR: - DUK__SNEQ_BODY(DUK__REGP_B(ins), DUK__REGP_C(ins)); - case DUK_OP_SNEQ_CR: - DUK__SNEQ_BODY(DUK__CONSTP_B(ins), DUK__REGP_C(ins)); - case DUK_OP_SNEQ_RC: - DUK__SNEQ_BODY(DUK__REGP_B(ins), DUK__CONSTP_C(ins)); - case DUK_OP_SNEQ_CC: - DUK__SNEQ_BODY(DUK__CONSTP_B(ins), DUK__CONSTP_C(ins)); -#endif /* DUK_USE_EXEC_PREFER_SIZE */ - -#define DUK__COMPARE_BODY(arg1, arg2, flags) \ - { \ - duk_bool_t tmp; \ - tmp = duk_js_compare_helper(thr, (arg1), (arg2), (flags)); \ - DUK_ASSERT(tmp == 0 || tmp == 1); \ - DUK__REPLACE_BOOL_A_BREAK(tmp); \ - } -#define DUK__GT_BODY(barg, carg) DUK__COMPARE_BODY((carg), (barg), 0) -#define DUK__GE_BODY(barg, carg) DUK__COMPARE_BODY((barg), (carg), DUK_COMPARE_FLAG_EVAL_LEFT_FIRST | DUK_COMPARE_FLAG_NEGATE) -#define DUK__LT_BODY(barg, carg) DUK__COMPARE_BODY((barg), (carg), DUK_COMPARE_FLAG_EVAL_LEFT_FIRST) -#define DUK__LE_BODY(barg, carg) DUK__COMPARE_BODY((carg), (barg), DUK_COMPARE_FLAG_NEGATE) -#if defined(DUK_USE_EXEC_PREFER_SIZE) - case DUK_OP_GT_RR: - case DUK_OP_GT_CR: - case DUK_OP_GT_RC: - case DUK_OP_GT_CC: - DUK__GT_BODY(DUK__REGCONSTP_B(ins), DUK__REGCONSTP_C(ins)); - case DUK_OP_GE_RR: - case DUK_OP_GE_CR: - case DUK_OP_GE_RC: - case DUK_OP_GE_CC: - DUK__GE_BODY(DUK__REGCONSTP_B(ins), DUK__REGCONSTP_C(ins)); - case DUK_OP_LT_RR: - case DUK_OP_LT_CR: - case DUK_OP_LT_RC: - case DUK_OP_LT_CC: - DUK__LT_BODY(DUK__REGCONSTP_B(ins), DUK__REGCONSTP_C(ins)); - case DUK_OP_LE_RR: - case DUK_OP_LE_CR: - case DUK_OP_LE_RC: - case DUK_OP_LE_CC: - DUK__LE_BODY(DUK__REGCONSTP_B(ins), DUK__REGCONSTP_C(ins)); -#else /* DUK_USE_EXEC_PREFER_SIZE */ - case DUK_OP_GT_RR: - DUK__GT_BODY(DUK__REGP_B(ins), DUK__REGP_C(ins)); - case DUK_OP_GT_CR: - DUK__GT_BODY(DUK__CONSTP_B(ins), DUK__REGP_C(ins)); - case DUK_OP_GT_RC: - DUK__GT_BODY(DUK__REGP_B(ins), DUK__CONSTP_C(ins)); - case DUK_OP_GT_CC: - DUK__GT_BODY(DUK__CONSTP_B(ins), DUK__CONSTP_C(ins)); - case DUK_OP_GE_RR: - DUK__GE_BODY(DUK__REGP_B(ins), DUK__REGP_C(ins)); - case DUK_OP_GE_CR: - DUK__GE_BODY(DUK__CONSTP_B(ins), DUK__REGP_C(ins)); - case DUK_OP_GE_RC: - DUK__GE_BODY(DUK__REGP_B(ins), DUK__CONSTP_C(ins)); - case DUK_OP_GE_CC: - DUK__GE_BODY(DUK__CONSTP_B(ins), DUK__CONSTP_C(ins)); - case DUK_OP_LT_RR: - DUK__LT_BODY(DUK__REGP_B(ins), DUK__REGP_C(ins)); - case DUK_OP_LT_CR: - DUK__LT_BODY(DUK__CONSTP_B(ins), DUK__REGP_C(ins)); - case DUK_OP_LT_RC: - DUK__LT_BODY(DUK__REGP_B(ins), DUK__CONSTP_C(ins)); - case DUK_OP_LT_CC: - DUK__LT_BODY(DUK__CONSTP_B(ins), DUK__CONSTP_C(ins)); - case DUK_OP_LE_RR: - DUK__LE_BODY(DUK__REGP_B(ins), DUK__REGP_C(ins)); - case DUK_OP_LE_CR: - DUK__LE_BODY(DUK__CONSTP_B(ins), DUK__REGP_C(ins)); - case DUK_OP_LE_RC: - DUK__LE_BODY(DUK__REGP_B(ins), DUK__CONSTP_C(ins)); - case DUK_OP_LE_CC: - DUK__LE_BODY(DUK__CONSTP_B(ins), DUK__CONSTP_C(ins)); -#endif /* DUK_USE_EXEC_PREFER_SIZE */ - - /* No size optimized variant at present for IF. */ - case DUK_OP_IFTRUE_R: { - if (duk_js_toboolean(DUK__REGP_BC(ins)) != 0) { - curr_pc++; - } - break; - } - case DUK_OP_IFTRUE_C: { - if (duk_js_toboolean(DUK__CONSTP_BC(ins)) != 0) { - curr_pc++; - } - break; - } - case DUK_OP_IFFALSE_R: { - if (duk_js_toboolean(DUK__REGP_BC(ins)) == 0) { - curr_pc++; - } - break; - } - case DUK_OP_IFFALSE_C: { - if (duk_js_toboolean(DUK__CONSTP_BC(ins)) == 0) { - curr_pc++; - } - break; - } - -#if defined(DUK_USE_EXEC_PREFER_SIZE) - case DUK_OP_ADD_RR: - case DUK_OP_ADD_CR: - case DUK_OP_ADD_RC: - case DUK_OP_ADD_CC: { - /* XXX: could leave value on stack top and goto replace_top_a; */ - duk__vm_arith_add(thr, DUK__REGCONSTP_B(ins), DUK__REGCONSTP_C(ins), DUK_DEC_A(ins)); - break; - } -#else /* DUK_USE_EXEC_PREFER_SIZE */ - case DUK_OP_ADD_RR: { - duk__vm_arith_add(thr, DUK__REGP_B(ins), DUK__REGP_C(ins), DUK_DEC_A(ins)); - break; - } - case DUK_OP_ADD_CR: { - duk__vm_arith_add(thr, DUK__CONSTP_B(ins), DUK__REGP_C(ins), DUK_DEC_A(ins)); - break; - } - case DUK_OP_ADD_RC: { - duk__vm_arith_add(thr, DUK__REGP_B(ins), DUK__CONSTP_C(ins), DUK_DEC_A(ins)); - break; - } - case DUK_OP_ADD_CC: { - duk__vm_arith_add(thr, DUK__CONSTP_B(ins), DUK__CONSTP_C(ins), DUK_DEC_A(ins)); - break; - } -#endif /* DUK_USE_EXEC_PREFER_SIZE */ - -#if defined(DUK_USE_EXEC_PREFER_SIZE) - case DUK_OP_SUB_RR: - case DUK_OP_SUB_CR: - case DUK_OP_SUB_RC: - case DUK_OP_SUB_CC: - case DUK_OP_MUL_RR: - case DUK_OP_MUL_CR: - case DUK_OP_MUL_RC: - case DUK_OP_MUL_CC: - case DUK_OP_DIV_RR: - case DUK_OP_DIV_CR: - case DUK_OP_DIV_RC: - case DUK_OP_DIV_CC: - case DUK_OP_MOD_RR: - case DUK_OP_MOD_CR: - case DUK_OP_MOD_RC: - case DUK_OP_MOD_CC: -#if defined(DUK_USE_ES7_EXP_OPERATOR) - case DUK_OP_EXP_RR: - case DUK_OP_EXP_CR: - case DUK_OP_EXP_RC: - case DUK_OP_EXP_CC: -#endif /* DUK_USE_ES7_EXP_OPERATOR */ - { - /* XXX: could leave value on stack top and goto replace_top_a; */ - duk__vm_arith_binary_op(thr, DUK__REGCONSTP_B(ins), DUK__REGCONSTP_C(ins), DUK_DEC_A(ins), op); - break; - } -#else /* DUK_USE_EXEC_PREFER_SIZE */ - case DUK_OP_SUB_RR: { - duk__vm_arith_binary_op(thr, DUK__REGP_B(ins), DUK__REGP_C(ins), DUK_DEC_A(ins), DUK_OP_SUB); - break; - } - case DUK_OP_SUB_CR: { - duk__vm_arith_binary_op(thr, DUK__CONSTP_B(ins), DUK__REGP_C(ins), DUK_DEC_A(ins), DUK_OP_SUB); - break; - } - case DUK_OP_SUB_RC: { - duk__vm_arith_binary_op(thr, DUK__REGP_B(ins), DUK__CONSTP_C(ins), DUK_DEC_A(ins), DUK_OP_SUB); - break; - } - case DUK_OP_SUB_CC: { - duk__vm_arith_binary_op(thr, DUK__CONSTP_B(ins), DUK__CONSTP_C(ins), DUK_DEC_A(ins), DUK_OP_SUB); - break; - } - case DUK_OP_MUL_RR: { - duk__vm_arith_binary_op(thr, DUK__REGP_B(ins), DUK__REGP_C(ins), DUK_DEC_A(ins), DUK_OP_MUL); - break; - } - case DUK_OP_MUL_CR: { - duk__vm_arith_binary_op(thr, DUK__CONSTP_B(ins), DUK__REGP_C(ins), DUK_DEC_A(ins), DUK_OP_MUL); - break; - } - case DUK_OP_MUL_RC: { - duk__vm_arith_binary_op(thr, DUK__REGP_B(ins), DUK__CONSTP_C(ins), DUK_DEC_A(ins), DUK_OP_MUL); - break; - } - case DUK_OP_MUL_CC: { - duk__vm_arith_binary_op(thr, DUK__CONSTP_B(ins), DUK__CONSTP_C(ins), DUK_DEC_A(ins), DUK_OP_MUL); - break; - } - case DUK_OP_DIV_RR: { - duk__vm_arith_binary_op(thr, DUK__REGP_B(ins), DUK__REGP_C(ins), DUK_DEC_A(ins), DUK_OP_DIV); - break; - } - case DUK_OP_DIV_CR: { - duk__vm_arith_binary_op(thr, DUK__CONSTP_B(ins), DUK__REGP_C(ins), DUK_DEC_A(ins), DUK_OP_DIV); - break; - } - case DUK_OP_DIV_RC: { - duk__vm_arith_binary_op(thr, DUK__REGP_B(ins), DUK__CONSTP_C(ins), DUK_DEC_A(ins), DUK_OP_DIV); - break; - } - case DUK_OP_DIV_CC: { - duk__vm_arith_binary_op(thr, DUK__CONSTP_B(ins), DUK__CONSTP_C(ins), DUK_DEC_A(ins), DUK_OP_DIV); - break; - } - case DUK_OP_MOD_RR: { - duk__vm_arith_binary_op(thr, DUK__REGP_B(ins), DUK__REGP_C(ins), DUK_DEC_A(ins), DUK_OP_MOD); - break; - } - case DUK_OP_MOD_CR: { - duk__vm_arith_binary_op(thr, DUK__CONSTP_B(ins), DUK__REGP_C(ins), DUK_DEC_A(ins), DUK_OP_MOD); - break; - } - case DUK_OP_MOD_RC: { - duk__vm_arith_binary_op(thr, DUK__REGP_B(ins), DUK__CONSTP_C(ins), DUK_DEC_A(ins), DUK_OP_MOD); - break; - } - case DUK_OP_MOD_CC: { - duk__vm_arith_binary_op(thr, DUK__CONSTP_B(ins), DUK__CONSTP_C(ins), DUK_DEC_A(ins), DUK_OP_MOD); - break; - } -#if defined(DUK_USE_ES7_EXP_OPERATOR) - case DUK_OP_EXP_RR: { - duk__vm_arith_binary_op(thr, DUK__REGP_B(ins), DUK__REGP_C(ins), DUK_DEC_A(ins), DUK_OP_EXP); - break; - } - case DUK_OP_EXP_CR: { - duk__vm_arith_binary_op(thr, DUK__CONSTP_B(ins), DUK__REGP_C(ins), DUK_DEC_A(ins), DUK_OP_EXP); - break; - } - case DUK_OP_EXP_RC: { - duk__vm_arith_binary_op(thr, DUK__REGP_B(ins), DUK__CONSTP_C(ins), DUK_DEC_A(ins), DUK_OP_EXP); - break; - } - case DUK_OP_EXP_CC: { - duk__vm_arith_binary_op(thr, DUK__CONSTP_B(ins), DUK__CONSTP_C(ins), DUK_DEC_A(ins), DUK_OP_EXP); - break; - } -#endif /* DUK_USE_ES7_EXP_OPERATOR */ -#endif /* DUK_USE_EXEC_PREFER_SIZE */ - -#if defined(DUK_USE_EXEC_PREFER_SIZE) - case DUK_OP_BAND_RR: - case DUK_OP_BAND_CR: - case DUK_OP_BAND_RC: - case DUK_OP_BAND_CC: - case DUK_OP_BOR_RR: - case DUK_OP_BOR_CR: - case DUK_OP_BOR_RC: - case DUK_OP_BOR_CC: - case DUK_OP_BXOR_RR: - case DUK_OP_BXOR_CR: - case DUK_OP_BXOR_RC: - case DUK_OP_BXOR_CC: - case DUK_OP_BASL_RR: - case DUK_OP_BASL_CR: - case DUK_OP_BASL_RC: - case DUK_OP_BASL_CC: - case DUK_OP_BLSR_RR: - case DUK_OP_BLSR_CR: - case DUK_OP_BLSR_RC: - case DUK_OP_BLSR_CC: - case DUK_OP_BASR_RR: - case DUK_OP_BASR_CR: - case DUK_OP_BASR_RC: - case DUK_OP_BASR_CC: { - /* XXX: could leave value on stack top and goto replace_top_a; */ - duk__vm_bitwise_binary_op(thr, DUK__REGCONSTP_B(ins), DUK__REGCONSTP_C(ins), DUK_DEC_A(ins), op); - break; - } -#else /* DUK_USE_EXEC_PREFER_SIZE */ - case DUK_OP_BAND_RR: { - duk__vm_bitwise_binary_op(thr, DUK__REGP_B(ins), DUK__REGP_C(ins), DUK_DEC_A(ins), DUK_OP_BAND); - break; - } - case DUK_OP_BAND_CR: { - duk__vm_bitwise_binary_op(thr, DUK__CONSTP_B(ins), DUK__REGP_C(ins), DUK_DEC_A(ins), DUK_OP_BAND); - break; - } - case DUK_OP_BAND_RC: { - duk__vm_bitwise_binary_op(thr, DUK__REGP_B(ins), DUK__CONSTP_C(ins), DUK_DEC_A(ins), DUK_OP_BAND); - break; - } - case DUK_OP_BAND_CC: { - duk__vm_bitwise_binary_op(thr, DUK__CONSTP_B(ins), DUK__CONSTP_C(ins), DUK_DEC_A(ins), DUK_OP_BAND); - break; - } - case DUK_OP_BOR_RR: { - duk__vm_bitwise_binary_op(thr, DUK__REGP_B(ins), DUK__REGP_C(ins), DUK_DEC_A(ins), DUK_OP_BOR); - break; - } - case DUK_OP_BOR_CR: { - duk__vm_bitwise_binary_op(thr, DUK__CONSTP_B(ins), DUK__REGP_C(ins), DUK_DEC_A(ins), DUK_OP_BOR); - break; - } - case DUK_OP_BOR_RC: { - duk__vm_bitwise_binary_op(thr, DUK__REGP_B(ins), DUK__CONSTP_C(ins), DUK_DEC_A(ins), DUK_OP_BOR); - break; - } - case DUK_OP_BOR_CC: { - duk__vm_bitwise_binary_op(thr, DUK__CONSTP_B(ins), DUK__CONSTP_C(ins), DUK_DEC_A(ins), DUK_OP_BOR); - break; - } - case DUK_OP_BXOR_RR: { - duk__vm_bitwise_binary_op(thr, DUK__REGP_B(ins), DUK__REGP_C(ins), DUK_DEC_A(ins), DUK_OP_BXOR); - break; - } - case DUK_OP_BXOR_CR: { - duk__vm_bitwise_binary_op(thr, DUK__CONSTP_B(ins), DUK__REGP_C(ins), DUK_DEC_A(ins), DUK_OP_BXOR); - break; - } - case DUK_OP_BXOR_RC: { - duk__vm_bitwise_binary_op(thr, DUK__REGP_B(ins), DUK__CONSTP_C(ins), DUK_DEC_A(ins), DUK_OP_BXOR); - break; - } - case DUK_OP_BXOR_CC: { - duk__vm_bitwise_binary_op(thr, DUK__CONSTP_B(ins), DUK__CONSTP_C(ins), DUK_DEC_A(ins), DUK_OP_BXOR); - break; - } - case DUK_OP_BASL_RR: { - duk__vm_bitwise_binary_op(thr, DUK__REGP_B(ins), DUK__REGP_C(ins), DUK_DEC_A(ins), DUK_OP_BASL); - break; - } - case DUK_OP_BASL_CR: { - duk__vm_bitwise_binary_op(thr, DUK__CONSTP_B(ins), DUK__REGP_C(ins), DUK_DEC_A(ins), DUK_OP_BASL); - break; - } - case DUK_OP_BASL_RC: { - duk__vm_bitwise_binary_op(thr, DUK__REGP_B(ins), DUK__CONSTP_C(ins), DUK_DEC_A(ins), DUK_OP_BASL); - break; - } - case DUK_OP_BASL_CC: { - duk__vm_bitwise_binary_op(thr, DUK__CONSTP_B(ins), DUK__CONSTP_C(ins), DUK_DEC_A(ins), DUK_OP_BASL); - break; - } - case DUK_OP_BLSR_RR: { - duk__vm_bitwise_binary_op(thr, DUK__REGP_B(ins), DUK__REGP_C(ins), DUK_DEC_A(ins), DUK_OP_BLSR); - break; - } - case DUK_OP_BLSR_CR: { - duk__vm_bitwise_binary_op(thr, DUK__CONSTP_B(ins), DUK__REGP_C(ins), DUK_DEC_A(ins), DUK_OP_BLSR); - break; - } - case DUK_OP_BLSR_RC: { - duk__vm_bitwise_binary_op(thr, DUK__REGP_B(ins), DUK__CONSTP_C(ins), DUK_DEC_A(ins), DUK_OP_BLSR); - break; - } - case DUK_OP_BLSR_CC: { - duk__vm_bitwise_binary_op(thr, DUK__CONSTP_B(ins), DUK__CONSTP_C(ins), DUK_DEC_A(ins), DUK_OP_BLSR); - break; - } - case DUK_OP_BASR_RR: { - duk__vm_bitwise_binary_op(thr, DUK__REGP_B(ins), DUK__REGP_C(ins), DUK_DEC_A(ins), DUK_OP_BASR); - break; - } - case DUK_OP_BASR_CR: { - duk__vm_bitwise_binary_op(thr, DUK__CONSTP_B(ins), DUK__REGP_C(ins), DUK_DEC_A(ins), DUK_OP_BASR); - break; - } - case DUK_OP_BASR_RC: { - duk__vm_bitwise_binary_op(thr, DUK__REGP_B(ins), DUK__CONSTP_C(ins), DUK_DEC_A(ins), DUK_OP_BASR); - break; - } - case DUK_OP_BASR_CC: { - duk__vm_bitwise_binary_op(thr, DUK__CONSTP_B(ins), DUK__CONSTP_C(ins), DUK_DEC_A(ins), DUK_OP_BASR); - break; - } -#endif /* DUK_USE_EXEC_PREFER_SIZE */ - - /* For INSTOF and IN, B is always a register. */ -#define DUK__INSTOF_BODY(barg, carg) \ - { \ - duk_bool_t tmp; \ - tmp = duk_js_instanceof(thr, (barg), (carg)); \ - DUK_ASSERT(tmp == 0 || tmp == 1); \ - DUK__REPLACE_BOOL_A_BREAK(tmp); \ - } -#define DUK__IN_BODY(barg, carg) \ - { \ - duk_bool_t tmp; \ - tmp = duk_js_in(thr, (barg), (carg)); \ - DUK_ASSERT(tmp == 0 || tmp == 1); \ - DUK__REPLACE_BOOL_A_BREAK(tmp); \ - } -#if defined(DUK_USE_EXEC_PREFER_SIZE) - case DUK_OP_INSTOF_RR: - case DUK_OP_INSTOF_CR: - case DUK_OP_INSTOF_RC: - case DUK_OP_INSTOF_CC: - DUK__INSTOF_BODY(DUK__REGCONSTP_B(ins), DUK__REGCONSTP_C(ins)); - case DUK_OP_IN_RR: - case DUK_OP_IN_CR: - case DUK_OP_IN_RC: - case DUK_OP_IN_CC: - DUK__IN_BODY(DUK__REGCONSTP_B(ins), DUK__REGCONSTP_C(ins)); -#else /* DUK_USE_EXEC_PREFER_SIZE */ - case DUK_OP_INSTOF_RR: - DUK__INSTOF_BODY(DUK__REGP_B(ins), DUK__REGP_C(ins)); - case DUK_OP_INSTOF_CR: - DUK__INSTOF_BODY(DUK__CONSTP_B(ins), DUK__REGP_C(ins)); - case DUK_OP_INSTOF_RC: - DUK__INSTOF_BODY(DUK__REGP_B(ins), DUK__CONSTP_C(ins)); - case DUK_OP_INSTOF_CC: - DUK__INSTOF_BODY(DUK__CONSTP_B(ins), DUK__CONSTP_C(ins)); - case DUK_OP_IN_RR: - DUK__IN_BODY(DUK__REGP_B(ins), DUK__REGP_C(ins)); - case DUK_OP_IN_CR: - DUK__IN_BODY(DUK__CONSTP_B(ins), DUK__REGP_C(ins)); - case DUK_OP_IN_RC: - DUK__IN_BODY(DUK__REGP_B(ins), DUK__CONSTP_C(ins)); - case DUK_OP_IN_CC: - DUK__IN_BODY(DUK__CONSTP_B(ins), DUK__CONSTP_C(ins)); -#endif /* DUK_USE_EXEC_PREFER_SIZE */ - - /* Pre/post inc/dec for register variables, important for loops. */ -#if defined(DUK_USE_EXEC_PREFER_SIZE) - case DUK_OP_PREINCR: - case DUK_OP_PREDECR: - case DUK_OP_POSTINCR: - case DUK_OP_POSTDECR: { - duk__prepost_incdec_reg_helper(thr, DUK__REGP_A(ins), DUK__REGP_BC(ins), op); - break; - } - case DUK_OP_PREINCV: - case DUK_OP_PREDECV: - case DUK_OP_POSTINCV: - case DUK_OP_POSTDECV: { - duk__prepost_incdec_var_helper(thr, DUK_DEC_A(ins), DUK__CONSTP_BC(ins), op, DUK__STRICT()); - break; - } -#else /* DUK_USE_EXEC_PREFER_SIZE */ - case DUK_OP_PREINCR: { - duk__prepost_incdec_reg_helper(thr, DUK__REGP_A(ins), DUK__REGP_BC(ins), DUK_OP_PREINCR); - break; - } - case DUK_OP_PREDECR: { - duk__prepost_incdec_reg_helper(thr, DUK__REGP_A(ins), DUK__REGP_BC(ins), DUK_OP_PREDECR); - break; - } - case DUK_OP_POSTINCR: { - duk__prepost_incdec_reg_helper(thr, DUK__REGP_A(ins), DUK__REGP_BC(ins), DUK_OP_POSTINCR); - break; - } - case DUK_OP_POSTDECR: { - duk__prepost_incdec_reg_helper(thr, DUK__REGP_A(ins), DUK__REGP_BC(ins), DUK_OP_POSTDECR); - break; - } - case DUK_OP_PREINCV: { - duk__prepost_incdec_var_helper(thr, DUK_DEC_A(ins), DUK__CONSTP_BC(ins), DUK_OP_PREINCV, DUK__STRICT()); - break; - } - case DUK_OP_PREDECV: { - duk__prepost_incdec_var_helper(thr, DUK_DEC_A(ins), DUK__CONSTP_BC(ins), DUK_OP_PREDECV, DUK__STRICT()); - break; - } - case DUK_OP_POSTINCV: { - duk__prepost_incdec_var_helper(thr, DUK_DEC_A(ins), DUK__CONSTP_BC(ins), DUK_OP_POSTINCV, DUK__STRICT()); - break; - } - case DUK_OP_POSTDECV: { - duk__prepost_incdec_var_helper(thr, DUK_DEC_A(ins), DUK__CONSTP_BC(ins), DUK_OP_POSTDECV, DUK__STRICT()); - break; - } -#endif /* DUK_USE_EXEC_PREFER_SIZE */ - - /* XXX: Move to separate helper, optimize for perf/size separately. */ - /* Preinc/predec for object properties. */ - case DUK_OP_PREINCP_RR: - case DUK_OP_PREINCP_CR: - case DUK_OP_PREINCP_RC: - case DUK_OP_PREINCP_CC: - case DUK_OP_PREDECP_RR: - case DUK_OP_PREDECP_CR: - case DUK_OP_PREDECP_RC: - case DUK_OP_PREDECP_CC: - case DUK_OP_POSTINCP_RR: - case DUK_OP_POSTINCP_CR: - case DUK_OP_POSTINCP_RC: - case DUK_OP_POSTINCP_CC: - case DUK_OP_POSTDECP_RR: - case DUK_OP_POSTDECP_CR: - case DUK_OP_POSTDECP_RC: - case DUK_OP_POSTDECP_CC: { - duk_tval *tv_obj; - duk_tval *tv_key; - duk_tval *tv_val; - duk_bool_t rc; - duk_double_t x, y, z; -#if !defined(DUK_USE_EXEC_PREFER_SIZE) - duk_tval *tv_dst; -#endif /* DUK_USE_EXEC_PREFER_SIZE */ - - /* A -> target reg - * B -> object reg/const (may be const e.g. in "'foo'[1]") - * C -> key reg/const - */ - - /* Opcode bits 0-1 are used to distinguish reg/const variants. - * Opcode bits 2-3 are used to distinguish inc/dec variants: - * Bit 2 = inc(0)/dec(1), bit 3 = pre(0)/post(1). - */ - DUK_ASSERT((DUK_OP_PREINCP_RR & 0x0c) == 0x00); - DUK_ASSERT((DUK_OP_PREDECP_RR & 0x0c) == 0x04); - DUK_ASSERT((DUK_OP_POSTINCP_RR & 0x0c) == 0x08); - DUK_ASSERT((DUK_OP_POSTDECP_RR & 0x0c) == 0x0c); - - tv_obj = DUK__REGCONSTP_B(ins); - tv_key = DUK__REGCONSTP_C(ins); - rc = duk_hobject_getprop(thr, tv_obj, tv_key); /* -> [val] */ - DUK_UNREF(rc); /* ignore */ - tv_obj = NULL; /* invalidated */ - tv_key = NULL; /* invalidated */ - - /* XXX: Fastint fast path would be useful here. Also fastints - * now lose their fastint status in current handling which is - * not intuitive. - */ - - x = duk_to_number_m1(thr); - duk_pop_unsafe(thr); - if (ins & DUK_BC_INCDECP_FLAG_DEC) { - y = x - 1.0; - } else { - y = x + 1.0; - } - - duk_push_number(thr, y); - tv_val = DUK_GET_TVAL_NEGIDX(thr, -1); - DUK_ASSERT(tv_val != NULL); - tv_obj = DUK__REGCONSTP_B(ins); - tv_key = DUK__REGCONSTP_C(ins); - rc = duk_hobject_putprop(thr, tv_obj, tv_key, tv_val, DUK__STRICT()); - DUK_UNREF(rc); /* ignore */ - tv_obj = NULL; /* invalidated */ - tv_key = NULL; /* invalidated */ - duk_pop_unsafe(thr); - - z = (ins & DUK_BC_INCDECP_FLAG_POST) ? x : y; -#if defined(DUK_USE_EXEC_PREFER_SIZE) - duk_push_number(thr, z); - DUK__REPLACE_TOP_A_BREAK(); -#else - tv_dst = DUK__REGP_A(ins); - DUK_TVAL_SET_NUMBER_UPDREF(thr, tv_dst, z); - break; -#endif - } - - /* XXX: GETPROP where object is 'this', GETPROPT? - * Occurs relatively often in object oriented code. - */ - -#define DUK__GETPROP_BODY(barg, carg) \ - { \ - /* A -> target reg \ - * B -> object reg/const (may be const e.g. in "'foo'[1]") \ - * C -> key reg/const \ - */ \ - (void) duk_hobject_getprop(thr, (barg), (carg)); \ - DUK__REPLACE_TOP_A_BREAK(); \ - } -#define DUK__GETPROPC_BODY(barg, carg) \ - { \ - /* Same as GETPROP but callability check for property-based calls. */ \ - duk_tval *tv__targ; \ - (void) duk_hobject_getprop(thr, (barg), (carg)); \ - DUK_GC_TORTURE(thr->heap); \ - tv__targ = DUK_GET_TVAL_NEGIDX(thr, -1); \ - if (DUK_UNLIKELY(!duk_is_callable_tval(thr, tv__targ))) { \ - /* Here we intentionally re-evaluate the macro \ - * arguments to deal with potentially changed \ - * valstack base pointer! \ - */ \ - duk_call_setup_propcall_error(thr, (barg), (carg)); \ - } \ - DUK__REPLACE_TOP_A_BREAK(); \ - } -#define DUK__PUTPROP_BODY(aarg, barg, carg) \ - { \ - /* A -> object reg \ - * B -> key reg/const \ - * C -> value reg/const \ - * \ - * Note: intentional difference to register arrangement \ - * of e.g. GETPROP; 'A' must contain a register-only value. \ - */ \ - (void) duk_hobject_putprop(thr, (aarg), (barg), (carg), DUK__STRICT()); \ - break; \ - } -#define DUK__DELPROP_BODY(barg, carg) \ - { \ - /* A -> result reg \ - * B -> object reg \ - * C -> key reg/const \ - */ \ - duk_bool_t rc; \ - rc = duk_hobject_delprop(thr, (barg), (carg), DUK__STRICT()); \ - DUK_ASSERT(rc == 0 || rc == 1); \ - DUK__REPLACE_BOOL_A_BREAK(rc); \ - } -#if defined(DUK_USE_EXEC_PREFER_SIZE) - case DUK_OP_GETPROP_RR: - case DUK_OP_GETPROP_CR: - case DUK_OP_GETPROP_RC: - case DUK_OP_GETPROP_CC: - DUK__GETPROP_BODY(DUK__REGCONSTP_B(ins), DUK__REGCONSTP_C(ins)); -#if defined(DUK_USE_VERBOSE_ERRORS) - case DUK_OP_GETPROPC_RR: - case DUK_OP_GETPROPC_CR: - case DUK_OP_GETPROPC_RC: - case DUK_OP_GETPROPC_CC: - DUK__GETPROPC_BODY(DUK__REGCONSTP_B(ins), DUK__REGCONSTP_C(ins)); -#endif - case DUK_OP_PUTPROP_RR: - case DUK_OP_PUTPROP_CR: - case DUK_OP_PUTPROP_RC: - case DUK_OP_PUTPROP_CC: - DUK__PUTPROP_BODY(DUK__REGP_A(ins), DUK__REGCONSTP_B(ins), DUK__REGCONSTP_C(ins)); - case DUK_OP_DELPROP_RR: - case DUK_OP_DELPROP_RC: /* B is always reg */ - DUK__DELPROP_BODY(DUK__REGP_B(ins), DUK__REGCONSTP_C(ins)); -#else /* DUK_USE_EXEC_PREFER_SIZE */ - case DUK_OP_GETPROP_RR: - DUK__GETPROP_BODY(DUK__REGP_B(ins), DUK__REGP_C(ins)); - case DUK_OP_GETPROP_CR: - DUK__GETPROP_BODY(DUK__CONSTP_B(ins), DUK__REGP_C(ins)); - case DUK_OP_GETPROP_RC: - DUK__GETPROP_BODY(DUK__REGP_B(ins), DUK__CONSTP_C(ins)); - case DUK_OP_GETPROP_CC: - DUK__GETPROP_BODY(DUK__CONSTP_B(ins), DUK__CONSTP_C(ins)); -#if defined(DUK_USE_VERBOSE_ERRORS) - case DUK_OP_GETPROPC_RR: - DUK__GETPROPC_BODY(DUK__REGP_B(ins), DUK__REGP_C(ins)); - case DUK_OP_GETPROPC_CR: - DUK__GETPROPC_BODY(DUK__CONSTP_B(ins), DUK__REGP_C(ins)); - case DUK_OP_GETPROPC_RC: - DUK__GETPROPC_BODY(DUK__REGP_B(ins), DUK__CONSTP_C(ins)); - case DUK_OP_GETPROPC_CC: - DUK__GETPROPC_BODY(DUK__CONSTP_B(ins), DUK__CONSTP_C(ins)); -#endif - case DUK_OP_PUTPROP_RR: - DUK__PUTPROP_BODY(DUK__REGP_A(ins), DUK__REGP_B(ins), DUK__REGP_C(ins)); - case DUK_OP_PUTPROP_CR: - DUK__PUTPROP_BODY(DUK__REGP_A(ins), DUK__CONSTP_B(ins), DUK__REGP_C(ins)); - case DUK_OP_PUTPROP_RC: - DUK__PUTPROP_BODY(DUK__REGP_A(ins), DUK__REGP_B(ins), DUK__CONSTP_C(ins)); - case DUK_OP_PUTPROP_CC: - DUK__PUTPROP_BODY(DUK__REGP_A(ins), DUK__CONSTP_B(ins), DUK__CONSTP_C(ins)); - case DUK_OP_DELPROP_RR: /* B is always reg */ - DUK__DELPROP_BODY(DUK__REGP_B(ins), DUK__REGP_C(ins)); - case DUK_OP_DELPROP_RC: - DUK__DELPROP_BODY(DUK__REGP_B(ins), DUK__CONSTP_C(ins)); -#endif /* DUK_USE_EXEC_PREFER_SIZE */ - - /* No fast path for DECLVAR now, it's quite a rare instruction. */ - case DUK_OP_DECLVAR_RR: - case DUK_OP_DECLVAR_CR: - case DUK_OP_DECLVAR_RC: - case DUK_OP_DECLVAR_CC: { - duk_activation *act; - duk_small_uint_fast_t a = DUK_DEC_A(ins); - duk_tval *tv1; - duk_hstring *name; - duk_small_uint_t prop_flags; - duk_bool_t is_func_decl; - - tv1 = DUK__REGCONSTP_B(ins); - DUK_ASSERT(DUK_TVAL_IS_STRING(tv1)); - name = DUK_TVAL_GET_STRING(tv1); - DUK_ASSERT(name != NULL); - - is_func_decl = ((a & DUK_BC_DECLVAR_FLAG_FUNC_DECL) != 0); - - /* XXX: declvar takes an duk_tval pointer, which is awkward and - * should be reworked. - */ - - /* Compiler is responsible for selecting property flags (configurability, - * writability, etc). - */ - prop_flags = a & DUK_PROPDESC_FLAGS_MASK; - - if (is_func_decl) { - duk_push_tval(thr, DUK__REGCONSTP_C(ins)); - } else { - DUK_ASSERT(DUK_TVAL_IS_UNDEFINED(thr->valstack_top)); /* valstack policy */ - thr->valstack_top++; - } - tv1 = DUK_GET_TVAL_NEGIDX(thr, -1); - - act = thr->callstack_curr; - if (duk_js_declvar_activation(thr, act, name, tv1, prop_flags, is_func_decl)) { - if (is_func_decl) { - /* Already declared, update value. */ - tv1 = DUK_GET_TVAL_NEGIDX(thr, -1); - duk_js_putvar_activation(thr, act, name, tv1, DUK__STRICT()); - } else { - /* Already declared but no initializer value - * (e.g. 'var xyz;'), no-op. - */ - } - } - - duk_pop_unsafe(thr); - break; - } - -#if defined(DUK_USE_REGEXP_SUPPORT) - /* The compiler should never emit DUK_OP_REGEXP if there is no - * regexp support. - */ - case DUK_OP_REGEXP_RR: - case DUK_OP_REGEXP_CR: - case DUK_OP_REGEXP_RC: - case DUK_OP_REGEXP_CC: { - /* A -> target register - * B -> bytecode (also contains flags) - * C -> escaped source - */ - - duk_push_tval(thr, DUK__REGCONSTP_C(ins)); - duk_push_tval(thr, DUK__REGCONSTP_B(ins)); /* -> [ ... escaped_source bytecode ] */ - duk_regexp_create_instance(thr); /* -> [ ... regexp_instance ] */ - DUK__REPLACE_TOP_A_BREAK(); - } -#endif /* DUK_USE_REGEXP_SUPPORT */ - - /* XXX: 'c' is unused, use whole BC, etc. */ - case DUK_OP_CSVAR_RR: - case DUK_OP_CSVAR_CR: - case DUK_OP_CSVAR_RC: - case DUK_OP_CSVAR_CC: { - /* The speciality of calling through a variable binding is that the - * 'this' value may be provided by the variable lookup: E5 Section 6.b.i. - * - * The only (standard) case where the 'this' binding is non-null is when - * (1) the variable is found in an object environment record, and - * (2) that object environment record is a 'with' block. - */ - - duk_activation *act; - duk_uint_fast_t idx; - duk_tval *tv1; - duk_hstring *name; - - /* A -> target registers (A, A + 1) for call setup - * B -> identifier name, usually constant but can be a register due to shuffling - */ - - tv1 = DUK__REGCONSTP_B(ins); - DUK_ASSERT(DUK_TVAL_IS_STRING(tv1)); - name = DUK_TVAL_GET_STRING(tv1); - DUK_ASSERT(name != NULL); - act = thr->callstack_curr; - (void) duk_js_getvar_activation(thr, act, name, 1 /*throw*/); /* -> [... val this] */ - - idx = (duk_uint_fast_t) DUK_DEC_A(ins); - - /* Could add direct value stack handling. */ - duk_replace(thr, (duk_idx_t) (idx + 1)); /* 'this' binding */ - duk_replace(thr, (duk_idx_t) idx); /* variable value (function, we hope, not checked here) */ - break; - } - - case DUK_OP_CLOSURE: { - duk_activation *act; - duk_hcompfunc *fun_act; - duk_small_uint_fast_t bc = DUK_DEC_BC(ins); - duk_hobject *fun_temp; - - /* A -> target reg - * BC -> inner function index - */ - - DUK_DDD(DUK_DDDPRINT("CLOSURE to target register %ld, fnum %ld (count %ld)", - (long) DUK_DEC_A(ins), - (long) DUK_DEC_BC(ins), - (long) DUK_HCOMPFUNC_GET_FUNCS_COUNT(thr->heap, DUK__FUN()))); - - DUK_ASSERT_DISABLE(bc >= 0); /* unsigned */ - DUK_ASSERT((duk_uint_t) bc < (duk_uint_t) DUK_HCOMPFUNC_GET_FUNCS_COUNT(thr->heap, DUK__FUN())); - - act = thr->callstack_curr; - fun_act = (duk_hcompfunc *) DUK_ACT_GET_FUNC(act); - fun_temp = DUK_HCOMPFUNC_GET_FUNCS_BASE(thr->heap, fun_act)[bc]; - DUK_ASSERT(fun_temp != NULL); - DUK_ASSERT(DUK_HOBJECT_IS_COMPFUNC(fun_temp)); - - DUK_DDD( - DUK_DDDPRINT("CLOSURE: function template is: %p -> %!O", (void *) fun_temp, (duk_heaphdr *) fun_temp)); - - if (act->lex_env == NULL) { - DUK_ASSERT(act->var_env == NULL); - duk_js_init_activation_environment_records_delayed(thr, act); - act = thr->callstack_curr; - } - DUK_ASSERT(act->lex_env != NULL); - DUK_ASSERT(act->var_env != NULL); - - /* functions always have a NEWENV flag, i.e. they get a - * new variable declaration environment, so only lex_env - * matters here. - */ - duk_js_push_closure(thr, (duk_hcompfunc *) fun_temp, act->var_env, act->lex_env, 1 /*add_auto_proto*/); - DUK__REPLACE_TOP_A_BREAK(); - } - - case DUK_OP_GETVAR: { - duk_activation *act; - duk_tval *tv1; - duk_hstring *name; - - tv1 = DUK__CONSTP_BC(ins); - DUK_ASSERT(DUK_TVAL_IS_STRING(tv1)); - name = DUK_TVAL_GET_STRING(tv1); - DUK_ASSERT(name != NULL); - act = thr->callstack_curr; - DUK_ASSERT(act != NULL); - (void) duk_js_getvar_activation(thr, act, name, 1 /*throw*/); /* -> [... val this] */ - duk_pop_unsafe(thr); /* 'this' binding is not needed here */ - DUK__REPLACE_TOP_A_BREAK(); - } - - case DUK_OP_PUTVAR: { - duk_activation *act; - duk_tval *tv1; - duk_hstring *name; - - tv1 = DUK__CONSTP_BC(ins); - DUK_ASSERT(DUK_TVAL_IS_STRING(tv1)); - name = DUK_TVAL_GET_STRING(tv1); - DUK_ASSERT(name != NULL); - - /* XXX: putvar takes a duk_tval pointer, which is awkward and - * should be reworked. - */ - - tv1 = DUK__REGP_A(ins); /* val */ - act = thr->callstack_curr; - duk_js_putvar_activation(thr, act, name, tv1, DUK__STRICT()); - break; - } - - case DUK_OP_DELVAR: { - duk_activation *act; - duk_tval *tv1; - duk_hstring *name; - duk_bool_t rc; - - tv1 = DUK__CONSTP_BC(ins); - DUK_ASSERT(DUK_TVAL_IS_STRING(tv1)); - name = DUK_TVAL_GET_STRING(tv1); - DUK_ASSERT(name != NULL); - act = thr->callstack_curr; - rc = duk_js_delvar_activation(thr, act, name); - DUK__REPLACE_BOOL_A_BREAK(rc); - } - - case DUK_OP_JUMP: { - /* Note: without explicit cast to signed, MSVC will - * apparently generate a large positive jump when the - * bias-corrected value would normally be negative. - */ - curr_pc += (duk_int_fast_t) DUK_DEC_ABC(ins) - (duk_int_fast_t) DUK_BC_JUMP_BIAS; - break; - } - -#define DUK__RETURN_SHARED() \ - do { \ - duk_small_uint_t ret_result; \ - /* duk__handle_return() is guaranteed never to throw, except \ - * for potential out-of-memory situations which will then \ - * propagate out of the executor longjmp handler. \ - */ \ - DUK_ASSERT(thr->ptr_curr_pc == NULL); \ - ret_result = duk__handle_return(thr, entry_act); \ - if (ret_result == DUK__RETHAND_RESTART) { \ - goto restart_execution; \ - } \ - DUK_ASSERT(ret_result == DUK__RETHAND_FINISHED); \ - return; \ - } while (0) -#if defined(DUK_USE_EXEC_PREFER_SIZE) - case DUK_OP_RETREG: - case DUK_OP_RETCONST: - case DUK_OP_RETCONSTN: - case DUK_OP_RETUNDEF: { - /* BC -> return value reg/const */ - - DUK__SYNC_AND_NULL_CURR_PC(); - - if (op == DUK_OP_RETREG) { - duk_push_tval(thr, DUK__REGP_BC(ins)); - } else if (op == DUK_OP_RETUNDEF) { - DUK_ASSERT(DUK_TVAL_IS_UNDEFINED(thr->valstack_top)); /* valstack policy */ - thr->valstack_top++; - } else { - DUK_ASSERT(op == DUK_OP_RETCONST || op == DUK_OP_RETCONSTN); - duk_push_tval(thr, DUK__CONSTP_BC(ins)); - } - - DUK__RETURN_SHARED(); - } -#else /* DUK_USE_EXEC_PREFER_SIZE */ - case DUK_OP_RETREG: { - duk_tval *tv; - - DUK__SYNC_AND_NULL_CURR_PC(); - tv = DUK__REGP_BC(ins); - DUK_TVAL_SET_TVAL(thr->valstack_top, tv); - DUK_TVAL_INCREF(thr, tv); - thr->valstack_top++; - DUK__RETURN_SHARED(); - } - /* This will be unused without refcounting. */ - case DUK_OP_RETCONST: { - duk_tval *tv; - - DUK__SYNC_AND_NULL_CURR_PC(); - tv = DUK__CONSTP_BC(ins); - DUK_TVAL_SET_TVAL(thr->valstack_top, tv); - DUK_TVAL_INCREF(thr, tv); - thr->valstack_top++; - DUK__RETURN_SHARED(); - } - case DUK_OP_RETCONSTN: { - duk_tval *tv; - - DUK__SYNC_AND_NULL_CURR_PC(); - tv = DUK__CONSTP_BC(ins); - DUK_TVAL_SET_TVAL(thr->valstack_top, tv); -#if defined(DUK_USE_REFERENCE_COUNTING) - /* Without refcounting only RETCONSTN is used. */ - DUK_ASSERT(!DUK_TVAL_IS_HEAP_ALLOCATED(tv)); /* no INCREF for this constant */ -#endif - thr->valstack_top++; - DUK__RETURN_SHARED(); - } - case DUK_OP_RETUNDEF: { - DUK__SYNC_AND_NULL_CURR_PC(); - thr->valstack_top++; /* value at valstack top is already undefined by valstack policy */ - DUK_ASSERT(DUK_TVAL_IS_UNDEFINED(thr->valstack_top)); - DUK__RETURN_SHARED(); - } -#endif /* DUK_USE_EXEC_PREFER_SIZE */ - - case DUK_OP_LABEL: { - duk_activation *act; - duk_catcher *cat; - duk_small_uint_fast_t bc = DUK_DEC_BC(ins); - - /* Allocate catcher and populate it (must be atomic). */ - - cat = duk_hthread_catcher_alloc(thr); - DUK_ASSERT(cat != NULL); - - cat->flags = (duk_uint32_t) (DUK_CAT_TYPE_LABEL | (bc << DUK_CAT_LABEL_SHIFT)); - cat->pc_base = (duk_instr_t *) curr_pc; /* pre-incremented, points to first jump slot */ - cat->idx_base = 0; /* unused for label */ - cat->h_varname = NULL; - - act = thr->callstack_curr; - DUK_ASSERT(act != NULL); - cat->parent = act->cat; - act->cat = cat; - - DUK_DDD(DUK_DDDPRINT("LABEL catcher: flags=0x%08lx, pc_base=%ld, " - "idx_base=%ld, h_varname=%!O, label_id=%ld", - (long) cat->flags, - (long) cat->pc_base, - (long) cat->idx_base, - (duk_heaphdr *) cat->h_varname, - (long) DUK_CAT_GET_LABEL(cat))); - - curr_pc += 2; /* skip jump slots */ - break; - } - - case DUK_OP_ENDLABEL: { - duk_activation *act; -#if (defined(DUK_USE_DEBUG_LEVEL) && (DUK_USE_DEBUG_LEVEL >= 2)) || defined(DUK_USE_ASSERTIONS) - duk_small_uint_fast_t bc = DUK_DEC_BC(ins); -#endif -#if defined(DUK_USE_DEBUG_LEVEL) && (DUK_USE_DEBUG_LEVEL >= 2) - DUK_DDD(DUK_DDDPRINT("ENDLABEL %ld", (long) bc)); -#endif - - act = thr->callstack_curr; - DUK_ASSERT(act->cat != NULL); - DUK_ASSERT(DUK_CAT_GET_TYPE(act->cat) == DUK_CAT_TYPE_LABEL); - DUK_ASSERT((duk_uint_fast_t) DUK_CAT_GET_LABEL(act->cat) == bc); - duk_hthread_catcher_unwind_nolexenv_norz(thr, act); - - /* no need to unwind callstack */ - break; - } - - case DUK_OP_BREAK: { - duk_small_uint_fast_t bc = DUK_DEC_BC(ins); - - DUK__SYNC_AND_NULL_CURR_PC(); - duk__handle_break_or_continue(thr, (duk_uint_t) bc, DUK_LJ_TYPE_BREAK); - goto restart_execution; - } - - case DUK_OP_CONTINUE: { - duk_small_uint_fast_t bc = DUK_DEC_BC(ins); - - DUK__SYNC_AND_NULL_CURR_PC(); - duk__handle_break_or_continue(thr, (duk_uint_t) bc, DUK_LJ_TYPE_CONTINUE); - goto restart_execution; - } - - /* XXX: move to helper, too large to be inline here */ - case DUK_OP_TRYCATCH: { - duk__handle_op_trycatch(thr, ins, curr_pc); - curr_pc += 2; /* skip jump slots */ - break; - } - - case DUK_OP_ENDTRY: { - curr_pc = duk__handle_op_endtry(thr, ins); - break; - } - - case DUK_OP_ENDCATCH: { - duk__handle_op_endcatch(thr, ins); - break; - } - - case DUK_OP_ENDFIN: { - /* Sync and NULL early. */ - DUK__SYNC_AND_NULL_CURR_PC(); - - if (duk__handle_op_endfin(thr, ins, entry_act) != 0) { - return; - } - - /* Must restart because we NULLed out curr_pc. */ - goto restart_execution; - } - - case DUK_OP_THROW: { - duk_small_uint_fast_t bc = DUK_DEC_BC(ins); - - /* Note: errors are augmented when they are created, not - * when they are thrown. So, don't augment here, it would - * break re-throwing for instance. - */ - - /* Sync so that augmentation sees up-to-date activations, NULL - * thr->ptr_curr_pc so that it's not used if side effects occur - * in augmentation or longjmp handling. - */ - DUK__SYNC_AND_NULL_CURR_PC(); - - duk_dup(thr, (duk_idx_t) bc); - DUK_DDD(DUK_DDDPRINT("THROW ERROR (BYTECODE): %!dT (before throw augment)", - (duk_tval *) duk_get_tval(thr, -1))); -#if defined(DUK_USE_AUGMENT_ERROR_THROW) - duk_err_augment_error_throw(thr); - DUK_DDD( - DUK_DDDPRINT("THROW ERROR (BYTECODE): %!dT (after throw augment)", (duk_tval *) duk_get_tval(thr, -1))); -#endif - - duk_err_setup_ljstate1(thr, DUK_LJ_TYPE_THROW, DUK_GET_TVAL_NEGIDX(thr, -1)); -#if defined(DUK_USE_DEBUGGER_SUPPORT) - duk_err_check_debugger_integration(thr); -#endif - - DUK_ASSERT(thr->heap->lj.jmpbuf_ptr != NULL); /* always in executor */ - duk_err_longjmp(thr); - DUK_UNREACHABLE(); - break; - } - - case DUK_OP_CSREG: { - /* - * Assuming a register binds to a variable declared within this - * function (a declarative binding), the 'this' for the call - * setup is always 'undefined'. E5 Section 10.2.1.1.6. - */ - - duk_small_uint_fast_t a = DUK_DEC_A(ins); - duk_small_uint_fast_t bc = DUK_DEC_BC(ins); - - /* A -> register containing target function (not type checked here) - * BC -> target registers (BC, BC + 1) for call setup - */ - -#if defined(DUK_USE_PREFER_SIZE) - duk_dup(thr, (duk_idx_t) a); - duk_replace(thr, (duk_idx_t) bc); - duk_to_undefined(thr, (duk_idx_t) (bc + 1)); -#else - duk_tval *tv1; - duk_tval *tv2; - duk_tval *tv3; - duk_tval tv_tmp1; - duk_tval tv_tmp2; - - tv1 = DUK__REGP(bc); - tv2 = tv1 + 1; - DUK_TVAL_SET_TVAL(&tv_tmp1, tv1); - DUK_TVAL_SET_TVAL(&tv_tmp2, tv2); - tv3 = DUK__REGP(a); - DUK_TVAL_SET_TVAL(tv1, tv3); - DUK_TVAL_INCREF(thr, tv1); /* no side effects */ - DUK_TVAL_SET_UNDEFINED(tv2); /* no need for incref */ - DUK_TVAL_DECREF(thr, &tv_tmp1); - DUK_TVAL_DECREF(thr, &tv_tmp2); -#endif - break; - } - - /* XXX: in some cases it's faster NOT to reuse the value - * stack but rather copy the arguments on top of the stack - * (mainly when the calling value stack is large and the value - * stack resize would be large). - */ - - case DUK_OP_CALL0: - case DUK_OP_CALL1: - case DUK_OP_CALL2: - case DUK_OP_CALL3: - case DUK_OP_CALL4: - case DUK_OP_CALL5: - case DUK_OP_CALL6: - case DUK_OP_CALL7: { - /* Opcode packs 4 flag bits: 1 for indirect, 3 map - * 1:1 to three lowest call handling flags. - * - * A -> nargs or register with nargs (indirect) - * BC -> base register for call (base -> func, base+1 -> this, base+2 -> arg1 ... base+2+N-1 -> argN) - */ - - duk_idx_t nargs; - duk_idx_t idx; - duk_small_uint_t call_flags; -#if !defined(DUK_USE_EXEC_FUN_LOCAL) - duk_hcompfunc *fun; -#endif - - DUK_ASSERT((DUK_OP_CALL0 & 0x0fU) == 0); - DUK_ASSERT((ins & DUK_BC_CALL_FLAG_INDIRECT) == 0); - - nargs = (duk_idx_t) DUK_DEC_A(ins); - call_flags = (ins & 0x07U) | DUK_CALL_FLAG_ALLOW_ECMATOECMA; - idx = (duk_idx_t) DUK_DEC_BC(ins); - - if (duk__executor_handle_call(thr, idx, nargs, call_flags)) { - /* curr_pc synced by duk_handle_call_unprotected() */ - DUK_ASSERT(thr->ptr_curr_pc == NULL); - goto restart_execution; - } - DUK_ASSERT(thr->ptr_curr_pc != NULL); - - /* duk_js_call.c is required to restore the stack reserve - * so we only need to reset the top. - */ -#if !defined(DUK_USE_EXEC_FUN_LOCAL) - fun = DUK__FUN(); -#endif - duk_set_top_unsafe(thr, (duk_idx_t) fun->nregs); - - /* No need to reinit setjmp() catchpoint, as call handling - * will store and restore our state. - * - * When debugger is enabled, we need to recheck the activation - * status after returning. This is now handled by call handling - * and heap->dbg_force_restart. - */ - break; - } - - case DUK_OP_CALL8: - case DUK_OP_CALL9: - case DUK_OP_CALL10: - case DUK_OP_CALL11: - case DUK_OP_CALL12: - case DUK_OP_CALL13: - case DUK_OP_CALL14: - case DUK_OP_CALL15: { - /* Indirect variant. */ - duk_uint_fast_t nargs; - duk_idx_t idx; - duk_small_uint_t call_flags; -#if !defined(DUK_USE_EXEC_FUN_LOCAL) - duk_hcompfunc *fun; -#endif - - DUK_ASSERT((DUK_OP_CALL0 & 0x0fU) == 0); - DUK_ASSERT((ins & DUK_BC_CALL_FLAG_INDIRECT) != 0); - - nargs = (duk_uint_fast_t) DUK_DEC_A(ins); - DUK__LOOKUP_INDIRECT(nargs); - call_flags = (ins & 0x07U) | DUK_CALL_FLAG_ALLOW_ECMATOECMA; - idx = (duk_idx_t) DUK_DEC_BC(ins); - - if (duk__executor_handle_call(thr, idx, (duk_idx_t) nargs, call_flags)) { - DUK_ASSERT(thr->ptr_curr_pc == NULL); - goto restart_execution; - } - DUK_ASSERT(thr->ptr_curr_pc != NULL); - -#if !defined(DUK_USE_EXEC_FUN_LOCAL) - fun = DUK__FUN(); -#endif - duk_set_top_unsafe(thr, (duk_idx_t) fun->nregs); - break; - } - - case DUK_OP_NEWOBJ: { - duk_push_object(thr); -#if defined(DUK_USE_ASSERTIONS) - { - duk_hobject *h; - h = duk_require_hobject(thr, -1); - DUK_ASSERT(DUK_HOBJECT_GET_ESIZE(h) == 0); - DUK_ASSERT(DUK_HOBJECT_GET_ENEXT(h) == 0); - DUK_ASSERT(DUK_HOBJECT_GET_ASIZE(h) == 0); - DUK_ASSERT(DUK_HOBJECT_GET_HSIZE(h) == 0); - } -#endif -#if !defined(DUK_USE_PREFER_SIZE) - /* XXX: could do a direct props realloc, but need hash size */ - duk_hobject_resize_entrypart(thr, duk_known_hobject(thr, -1), DUK_DEC_A(ins)); -#endif - DUK__REPLACE_TOP_BC_BREAK(); - } - - case DUK_OP_NEWARR: { - duk_push_array(thr); -#if defined(DUK_USE_ASSERTIONS) - { - duk_hobject *h; - h = duk_require_hobject(thr, -1); - DUK_ASSERT(DUK_HOBJECT_GET_ESIZE(h) == 0); - DUK_ASSERT(DUK_HOBJECT_GET_ENEXT(h) == 0); - DUK_ASSERT(DUK_HOBJECT_GET_ASIZE(h) == 0); - DUK_ASSERT(DUK_HOBJECT_GET_HSIZE(h) == 0); - DUK_ASSERT(DUK_HOBJECT_HAS_ARRAY_PART(h)); - } -#endif -#if !defined(DUK_USE_PREFER_SIZE) - duk_hobject_realloc_props(thr, - duk_known_hobject(thr, -1), - 0 /*new_e_size*/, - DUK_DEC_A(ins) /*new_a_size*/, - 0 /*new_h_size*/, - 0 /*abandon_array*/); -#if 0 - duk_hobject_resize_arraypart(thr, duk_known_hobject(thr, -1), DUK_DEC_A(ins)); -#endif -#endif - DUK__REPLACE_TOP_BC_BREAK(); - } - - case DUK_OP_MPUTOBJ: - case DUK_OP_MPUTOBJI: { - duk_idx_t obj_idx; - duk_uint_fast_t idx, idx_end; - duk_small_uint_fast_t count; - - /* A -> register of target object - * B -> first register of key/value pair list - * or register containing first register number if indirect - * C -> number of key/value pairs * 2 - * (= number of value stack indices used starting from 'B') - */ - - obj_idx = DUK_DEC_A(ins); - DUK_ASSERT(duk_is_object(thr, obj_idx)); - - idx = (duk_uint_fast_t) DUK_DEC_B(ins); - if (DUK_DEC_OP(ins) == DUK_OP_MPUTOBJI) { - DUK__LOOKUP_INDIRECT(idx); - } - - count = (duk_small_uint_fast_t) DUK_DEC_C(ins); - DUK_ASSERT(count > 0); /* compiler guarantees */ - idx_end = idx + count; - -#if defined(DUK_USE_EXEC_INDIRECT_BOUND_CHECK) - if (DUK_UNLIKELY(idx_end > (duk_uint_fast_t) duk_get_top(thr))) { - /* XXX: use duk_is_valid_index() instead? */ - /* XXX: improve check; check against nregs, not against top */ - DUK__INTERNAL_ERROR("MPUTOBJ out of bounds"); - } -#endif - - /* Use 'force' flag to duk_def_prop() to ensure that any - * inherited properties don't prevent the operation. - * With ES2015 duplicate properties are allowed, so that we - * must overwrite any previous data or accessor property. - * - * With ES2015 computed property names the literal keys - * may be arbitrary values and need to be ToPropertyKey() - * coerced at runtime. - */ - do { - /* XXX: faster initialization (direct access or better primitives) */ - duk_dup(thr, (duk_idx_t) idx); - duk_dup(thr, (duk_idx_t) (idx + 1)); - duk_def_prop(thr, - obj_idx, - DUK_DEFPROP_HAVE_VALUE | DUK_DEFPROP_FORCE | DUK_DEFPROP_SET_WRITABLE | - DUK_DEFPROP_SET_ENUMERABLE | DUK_DEFPROP_SET_CONFIGURABLE); - idx += 2; - } while (idx < idx_end); - break; - } - - case DUK_OP_INITSET: - case DUK_OP_INITGET: { - duk__handle_op_initset_initget(thr, ins); - break; - } - - case DUK_OP_MPUTARR: - case DUK_OP_MPUTARRI: { - duk_idx_t obj_idx; - duk_uint_fast_t idx, idx_end; - duk_small_uint_fast_t count; - duk_tval *tv1; - duk_uint32_t arr_idx; - - /* A -> register of target object - * B -> first register of value data (start_index, value1, value2, ..., valueN) - * or register containing first register number if indirect - * C -> number of key/value pairs (N) - */ - - obj_idx = DUK_DEC_A(ins); - DUK_ASSERT(duk_is_object(thr, obj_idx)); - - idx = (duk_uint_fast_t) DUK_DEC_B(ins); - if (DUK_DEC_OP(ins) == DUK_OP_MPUTARRI) { - DUK__LOOKUP_INDIRECT(idx); - } - - count = (duk_small_uint_fast_t) DUK_DEC_C(ins); - DUK_ASSERT(count > 0 + 1); /* compiler guarantees */ - idx_end = idx + count; - -#if defined(DUK_USE_EXEC_INDIRECT_BOUND_CHECK) - if (idx_end > (duk_uint_fast_t) duk_get_top(thr)) { - /* XXX: use duk_is_valid_index() instead? */ - /* XXX: improve check; check against nregs, not against top */ - DUK__INTERNAL_ERROR("MPUTARR out of bounds"); - } -#endif - - tv1 = DUK__REGP(idx); - DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv1)); -#if defined(DUK_USE_FASTINT) - DUK_ASSERT(DUK_TVAL_IS_FASTINT(tv1)); - arr_idx = (duk_uint32_t) DUK_TVAL_GET_FASTINT_U32(tv1); -#else - arr_idx = (duk_uint32_t) DUK_TVAL_GET_NUMBER(tv1); -#endif - idx++; - - do { - /* duk_xdef_prop() will define an own property without any array - * special behaviors. We'll need to set the array length explicitly - * in the end. For arrays with elisions, the compiler will emit an - * explicit SETALEN which will update the length. - */ - - /* XXX: because we're dealing with 'own' properties of a fresh array, - * the array initializer should just ensure that the array has a large - * enough array part and write the values directly into array part, - * and finally set 'length' manually in the end (as already happens now). - */ - - duk_dup(thr, (duk_idx_t) idx); - duk_xdef_prop_index_wec(thr, obj_idx, arr_idx); - - idx++; - arr_idx++; - } while (idx < idx_end); - - /* XXX: E5.1 Section 11.1.4 coerces the final length through - * ToUint32() which is odd but happens now as a side effect of - * 'arr_idx' type. - */ - duk_set_length(thr, obj_idx, (duk_size_t) (duk_uarridx_t) arr_idx); - break; - } - - case DUK_OP_SETALEN: { - duk_tval *tv1; - duk_hobject *h; - duk_uint32_t len; - - tv1 = DUK__REGP_A(ins); - DUK_ASSERT(DUK_TVAL_IS_OBJECT(tv1)); - h = DUK_TVAL_GET_OBJECT(tv1); - DUK_ASSERT(DUK_HOBJECT_IS_ARRAY(h)); - - tv1 = DUK__REGP_BC(ins); - DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv1)); -#if defined(DUK_USE_FASTINT) - DUK_ASSERT(DUK_TVAL_IS_FASTINT(tv1)); - len = (duk_uint32_t) DUK_TVAL_GET_FASTINT_U32(tv1); -#else - len = (duk_uint32_t) DUK_TVAL_GET_NUMBER(tv1); -#endif - ((duk_harray *) h)->length = len; - break; - } - - case DUK_OP_INITENUM: { - duk__handle_op_initenum(thr, ins); - break; - } - - case DUK_OP_NEXTENUM: { - curr_pc += duk__handle_op_nextenum(thr, ins); - break; - } - - case DUK_OP_INVLHS: { - DUK_ERROR_REFERENCE(thr, DUK_STR_INVALID_LVALUE); - DUK_WO_NORETURN(return;); - break; - } - - case DUK_OP_DEBUGGER: { - /* Opcode only emitted by compiler when debugger - * support is enabled. Ignore it silently without - * debugger support, in case it has been loaded - * from precompiled bytecode. - */ -#if defined(DUK_USE_DEBUGGER_SUPPORT) - if (duk_debug_is_attached(thr->heap)) { - DUK_D(DUK_DPRINT("DEBUGGER statement encountered, halt execution")); - DUK__SYNC_AND_NULL_CURR_PC(); - duk_debug_halt_execution(thr, 1 /*use_prev_pc*/); - DUK_D(DUK_DPRINT("DEBUGGER statement finished, resume execution")); - goto restart_execution; - } else { - DUK_D(DUK_DPRINT("DEBUGGER statement ignored, debugger not attached")); - } -#else - DUK_D(DUK_DPRINT("DEBUGGER statement ignored, no debugger support")); -#endif - break; - } - - case DUK_OP_NOP: { - /* Nop, ignored, but ABC fields may carry a value e.g. - * for indirect opcode handling. - */ - break; - } - - case DUK_OP_INVALID: { - DUK_ERROR_FMT1(thr, DUK_ERR_ERROR, "INVALID opcode (%ld)", (long) DUK_DEC_ABC(ins)); - DUK_WO_NORETURN(return;); - break; - } - -#if defined(DUK_USE_ES6) - case DUK_OP_NEWTARGET: { - duk_push_new_target(thr); - DUK__REPLACE_TOP_BC_BREAK(); - } -#endif /* DUK_USE_ES6 */ - -#if !defined(DUK_USE_EXEC_PREFER_SIZE) -#if !defined(DUK_USE_ES7_EXP_OPERATOR) - case DUK_OP_EXP_RR: - case DUK_OP_EXP_CR: - case DUK_OP_EXP_RC: - case DUK_OP_EXP_CC: -#endif -#if !defined(DUK_USE_ES6) - case DUK_OP_NEWTARGET: -#endif -#if !defined(DUK_USE_VERBOSE_ERRORS) - case DUK_OP_GETPROPC_RR: - case DUK_OP_GETPROPC_CR: - case DUK_OP_GETPROPC_RC: - case DUK_OP_GETPROPC_CC: -#endif - case DUK_OP_UNUSED207: - case DUK_OP_UNUSED212: - case DUK_OP_UNUSED213: - case DUK_OP_UNUSED214: - case DUK_OP_UNUSED215: - case DUK_OP_UNUSED216: - case DUK_OP_UNUSED217: - case DUK_OP_UNUSED218: - case DUK_OP_UNUSED219: - case DUK_OP_UNUSED220: - case DUK_OP_UNUSED221: - case DUK_OP_UNUSED222: - case DUK_OP_UNUSED223: - case DUK_OP_UNUSED224: - case DUK_OP_UNUSED225: - case DUK_OP_UNUSED226: - case DUK_OP_UNUSED227: - case DUK_OP_UNUSED228: - case DUK_OP_UNUSED229: - case DUK_OP_UNUSED230: - case DUK_OP_UNUSED231: - case DUK_OP_UNUSED232: - case DUK_OP_UNUSED233: - case DUK_OP_UNUSED234: - case DUK_OP_UNUSED235: - case DUK_OP_UNUSED236: - case DUK_OP_UNUSED237: - case DUK_OP_UNUSED238: - case DUK_OP_UNUSED239: - case DUK_OP_UNUSED240: - case DUK_OP_UNUSED241: - case DUK_OP_UNUSED242: - case DUK_OP_UNUSED243: - case DUK_OP_UNUSED244: - case DUK_OP_UNUSED245: - case DUK_OP_UNUSED246: - case DUK_OP_UNUSED247: - case DUK_OP_UNUSED248: - case DUK_OP_UNUSED249: - case DUK_OP_UNUSED250: - case DUK_OP_UNUSED251: - case DUK_OP_UNUSED252: - case DUK_OP_UNUSED253: - case DUK_OP_UNUSED254: - case DUK_OP_UNUSED255: - /* Force all case clauses to map to an actual handler - * so that the compiler can emit a jump without a bounds - * check: the switch argument is a duk_uint8_t so that - * the compiler may be able to figure it out. This is - * a small detail and obviously compiler dependent. - */ - /* default: clause omitted on purpose */ -#else /* DUK_USE_EXEC_PREFER_SIZE */ - default: -#endif /* DUK_USE_EXEC_PREFER_SIZE */ - { - /* Default case catches invalid/unsupported opcodes. */ - DUK_D(DUK_DPRINT("invalid opcode: %ld - %!I", (long) op, ins)); - DUK__INTERNAL_ERROR("invalid opcode"); - break; - } - - } /* end switch */ - - continue; - - /* Some shared exit paths for opcode handling below. These - * are mostly useful to reduce code footprint when multiple - * opcodes have a similar epilogue (like replacing stack top - * with index 'a'). - */ - -#if defined(DUK_USE_EXEC_PREFER_SIZE) - replace_top_a: - DUK__REPLACE_TO_TVPTR(thr, DUK__REGP_A(ins)); - continue; - replace_top_bc: - DUK__REPLACE_TO_TVPTR(thr, DUK__REGP_BC(ins)); - continue; -#endif - } - DUK_WO_NORETURN(return;); - -#if !defined(DUK_USE_VERBOSE_EXECUTOR_ERRORS) -internal_error: - DUK_ERROR_INTERNAL(thr); - DUK_WO_NORETURN(return;); -#endif -} - -/* automatic undefs */ -#undef DUK__BYTEOFF_A -#undef DUK__BYTEOFF_B -#undef DUK__BYTEOFF_BC -#undef DUK__BYTEOFF_C -#undef DUK__COMPARE_BODY -#undef DUK__CONST -#undef DUK__CONSTP -#undef DUK__CONSTP_A -#undef DUK__CONSTP_B -#undef DUK__CONSTP_BC -#undef DUK__CONSTP_C -#undef DUK__DELPROP_BODY -#undef DUK__EQ_BODY -#undef DUK__FUN -#undef DUK__GETPROPC_BODY -#undef DUK__GETPROP_BODY -#undef DUK__GE_BODY -#undef DUK__GT_BODY -#undef DUK__INSTOF_BODY -#undef DUK__INTERNAL_ERROR -#undef DUK__INT_NOACTION -#undef DUK__INT_RESTART -#undef DUK__IN_BODY -#undef DUK__LE_BODY -#undef DUK__LONGJMP_RESTART -#undef DUK__LONGJMP_RETHROW -#undef DUK__LOOKUP_INDIRECT -#undef DUK__LT_BODY -#undef DUK__MASK_A -#undef DUK__MASK_B -#undef DUK__MASK_BC -#undef DUK__MASK_C -#undef DUK__NEQ_BODY -#undef DUK__PUTPROP_BODY -#undef DUK__RCBIT_B -#undef DUK__RCBIT_C -#undef DUK__REG -#undef DUK__REGCONSTP_B -#undef DUK__REGCONSTP_C -#undef DUK__REGP -#undef DUK__REGP_A -#undef DUK__REGP_B -#undef DUK__REGP_BC -#undef DUK__REGP_C -#undef DUK__REPLACE_BOOL_A_BREAK -#undef DUK__REPLACE_TOP_A_BREAK -#undef DUK__REPLACE_TOP_BC_BREAK -#undef DUK__REPLACE_TO_TVPTR -#undef DUK__RETHAND_FINISHED -#undef DUK__RETHAND_RESTART -#undef DUK__RETURN_SHARED -#undef DUK__SEQ_BODY -#undef DUK__SHIFT_A -#undef DUK__SHIFT_B -#undef DUK__SHIFT_BC -#undef DUK__SHIFT_C -#undef DUK__SNEQ_BODY -#undef DUK__STRICT -#undef DUK__SYNC_AND_NULL_CURR_PC -#undef DUK__SYNC_CURR_PC -#undef DUK__TVAL_SHIFT -#line 1 "duk_js_ops.c" -/* - * ECMAScript specification algorithm and conversion helpers. - * - * These helpers encapsulate the primitive ECMAScript operation semantics, - * and are used by the bytecode executor and the API (among other places). - * Some primitives are only implemented as part of the API and have no - * "internal" helper. This is the case when an internal helper would not - * really be useful; e.g. the operation is rare, uses value stack heavily, - * etc. - * - * The operation arguments depend on what is required to implement - * the operation: - * - * - If an operation is simple and stateless, and has no side - * effects, it won't take an duk_hthread argument and its - * arguments may be duk_tval pointers (which are safe as long - * as no side effects take place). - * - * - If complex coercions are required (e.g. a "ToNumber" coercion) - * or errors may be thrown, the operation takes an duk_hthread - * argument. This also implies that the operation may have - * arbitrary side effects, invalidating any duk_tval pointers. - * - * - For operations with potential side effects, arguments can be - * taken in several ways: - * - * a) as duk_tval pointers, which makes sense if the "common case" - * can be resolved without side effects (e.g. coercion); the - * arguments are pushed to the valstack for coercion if - * necessary - * - * b) as duk_tval values - * - * c) implicitly on value stack top - * - * d) as indices to the value stack - * - * Future work: - * - * - Argument styles may not be the most sensible in every case now. - * - * - In-place coercions might be useful for several operations, if - * in-place coercion is OK for the bytecode executor and the API. - */ - -/* #include duk_internal.h -> already included */ - -/* - * ToPrimitive() (E5 Section 9.1) - * - * ==> implemented in the API. - */ - -/* - * ToBoolean() (E5 Section 9.2) - */ - -DUK_INTERNAL duk_bool_t duk_js_toboolean(duk_tval *tv) { - switch (DUK_TVAL_GET_TAG(tv)) { - case DUK_TAG_UNDEFINED: - case DUK_TAG_NULL: - return 0; - case DUK_TAG_BOOLEAN: - DUK_ASSERT(DUK_TVAL_GET_BOOLEAN(tv) == 0 || DUK_TVAL_GET_BOOLEAN(tv) == 1); - return DUK_TVAL_GET_BOOLEAN(tv); - case DUK_TAG_STRING: { - /* Symbols ToBoolean() coerce to true, regardless of their - * description. This happens with no explicit check because - * of the symbol representation byte prefix. - */ - duk_hstring *h = DUK_TVAL_GET_STRING(tv); - DUK_ASSERT(h != NULL); - return (DUK_HSTRING_GET_BYTELEN(h) > 0 ? 1 : 0); - } - case DUK_TAG_OBJECT: { - return 1; - } - case DUK_TAG_BUFFER: { - /* Mimic Uint8Array semantics: objects coerce true, regardless - * of buffer length (zero or not) or context. - */ - return 1; - } - case DUK_TAG_POINTER: { - void *p = DUK_TVAL_GET_POINTER(tv); - return (p != NULL ? 1 : 0); - } - case DUK_TAG_LIGHTFUNC: { - return 1; - } -#if defined(DUK_USE_FASTINT) - case DUK_TAG_FASTINT: - if (DUK_TVAL_GET_FASTINT(tv) != 0) { - return 1; - } else { - return 0; - } -#endif - default: { - /* number */ - duk_double_t d; -#if defined(DUK_USE_PREFER_SIZE) - int c; -#endif - DUK_ASSERT(!DUK_TVAL_IS_UNUSED(tv)); - DUK_ASSERT(DUK_TVAL_IS_DOUBLE(tv)); - d = DUK_TVAL_GET_DOUBLE(tv); -#if defined(DUK_USE_PREFER_SIZE) - c = DUK_FPCLASSIFY((double) d); - if (c == DUK_FP_ZERO || c == DUK_FP_NAN) { - return 0; - } else { - return 1; - } -#else - DUK_ASSERT(duk_double_is_nan_or_zero(d) == 0 || duk_double_is_nan_or_zero(d) == 1); - return duk_double_is_nan_or_zero(d) ^ 1; -#endif - } - } - DUK_UNREACHABLE(); - DUK_WO_UNREACHABLE(return 0;); -} - -/* - * ToNumber() (E5 Section 9.3) - * - * Value to convert must be on stack top, and is popped before exit. - * - * See: http://www.cs.indiana.edu/~burger/FP-Printing-PLDI96.pdf - * http://www.cs.indiana.edu/~burger/fp/index.html - * - * Notes on the conversion: - * - * - There are specific requirements on the accuracy of the conversion - * through a "Mathematical Value" (MV), so this conversion is not - * trivial. - * - * - Quick rejects (e.g. based on first char) are difficult because - * the grammar allows leading and trailing white space. - * - * - Quick reject based on string length is difficult even after - * accounting for white space; there may be arbitrarily many - * decimal digits. - * - * - Standard grammar allows decimal values ("123"), hex values - * ("0x123") and infinities - * - * - Unlike source code literals, ToNumber() coerces empty strings - * and strings with only whitespace to zero (not NaN). However, - * while '' coerces to 0, '+' and '-' coerce to NaN. - */ - -/* E5 Section 9.3.1 */ -DUK_LOCAL duk_double_t duk__tonumber_string_raw(duk_hthread *thr) { - duk_small_uint_t s2n_flags; - duk_double_t d; - - DUK_ASSERT(duk_is_string(thr, -1)); - - /* Quite lenient, e.g. allow empty as zero, but don't allow trailing - * garbage. - */ - s2n_flags = DUK_S2N_FLAG_TRIM_WHITE | DUK_S2N_FLAG_ALLOW_EXP | DUK_S2N_FLAG_ALLOW_PLUS | DUK_S2N_FLAG_ALLOW_MINUS | - DUK_S2N_FLAG_ALLOW_INF | DUK_S2N_FLAG_ALLOW_FRAC | DUK_S2N_FLAG_ALLOW_NAKED_FRAC | - DUK_S2N_FLAG_ALLOW_EMPTY_FRAC | DUK_S2N_FLAG_ALLOW_EMPTY_AS_ZERO | DUK_S2N_FLAG_ALLOW_LEADING_ZERO | - DUK_S2N_FLAG_ALLOW_AUTO_HEX_INT | DUK_S2N_FLAG_ALLOW_AUTO_OCT_INT | DUK_S2N_FLAG_ALLOW_AUTO_BIN_INT; - - duk_numconv_parse(thr, 10 /*radix*/, s2n_flags); - -#if defined(DUK_USE_PREFER_SIZE) - d = duk_get_number(thr, -1); - duk_pop_unsafe(thr); -#else - thr->valstack_top--; - DUK_ASSERT(DUK_TVAL_IS_NUMBER(thr->valstack_top)); - DUK_ASSERT(DUK_TVAL_IS_DOUBLE(thr->valstack_top)); /* no fastint conversion in numconv now */ - DUK_ASSERT(!DUK_TVAL_NEEDS_REFCOUNT_UPDATE(thr->valstack_top)); - d = DUK_TVAL_GET_DOUBLE(thr->valstack_top); /* assumes not a fastint */ - DUK_TVAL_SET_UNDEFINED(thr->valstack_top); -#endif - - return d; -} - -DUK_INTERNAL duk_double_t duk_js_tonumber(duk_hthread *thr, duk_tval *tv) { - DUK_ASSERT(thr != NULL); - DUK_ASSERT(tv != NULL); - - switch (DUK_TVAL_GET_TAG(tv)) { - case DUK_TAG_UNDEFINED: { - /* return a specific NaN (although not strictly necessary) */ - duk_double_union du; - DUK_DBLUNION_SET_NAN(&du); - DUK_ASSERT(DUK_DBLUNION_IS_NORMALIZED(&du)); - return du.d; - } - case DUK_TAG_NULL: { - /* +0.0 */ - return 0.0; - } - case DUK_TAG_BOOLEAN: { - if (DUK_TVAL_IS_BOOLEAN_TRUE(tv)) { - return 1.0; - } - return 0.0; - } - case DUK_TAG_STRING: { - /* For Symbols ToNumber() is always a TypeError. */ - duk_hstring *h = DUK_TVAL_GET_STRING(tv); - if (DUK_UNLIKELY(DUK_HSTRING_HAS_SYMBOL(h))) { - DUK_ERROR_TYPE(thr, DUK_STR_CANNOT_NUMBER_COERCE_SYMBOL); - DUK_WO_NORETURN(return 0.0;); - } - duk_push_hstring(thr, h); - return duk__tonumber_string_raw(thr); - } - case DUK_TAG_BUFFER: /* plain buffer treated like object */ - case DUK_TAG_OBJECT: { - duk_double_t d; - duk_push_tval(thr, tv); - duk_to_primitive(thr, -1, DUK_HINT_NUMBER); /* 'tv' becomes invalid */ - - /* recursive call for a primitive value (guaranteed not to cause second - * recursion). - */ - DUK_ASSERT(duk_get_tval(thr, -1) != NULL); - d = duk_js_tonumber(thr, duk_get_tval(thr, -1)); - - duk_pop_unsafe(thr); - return d; - } - case DUK_TAG_POINTER: { - /* Coerce like boolean */ - void *p = DUK_TVAL_GET_POINTER(tv); - return (p != NULL ? 1.0 : 0.0); - } - case DUK_TAG_LIGHTFUNC: { - /* +(function(){}) -> NaN */ - return DUK_DOUBLE_NAN; - } -#if defined(DUK_USE_FASTINT) - case DUK_TAG_FASTINT: - return (duk_double_t) DUK_TVAL_GET_FASTINT(tv); -#endif - default: { - /* number */ - DUK_ASSERT(!DUK_TVAL_IS_UNUSED(tv)); - DUK_ASSERT(DUK_TVAL_IS_DOUBLE(tv)); - return DUK_TVAL_GET_DOUBLE(tv); - } - } - - DUK_UNREACHABLE(); - DUK_WO_UNREACHABLE(return 0.0;); -} - -/* - * ToInteger() (E5 Section 9.4) - */ - -/* exposed, used by e.g. duk_bi_date.c */ -DUK_INTERNAL duk_double_t duk_js_tointeger_number(duk_double_t x) { -#if defined(DUK_USE_PREFER_SIZE) - duk_small_int_t c = (duk_small_int_t) DUK_FPCLASSIFY(x); - - if (DUK_UNLIKELY(c == DUK_FP_NAN)) { - return 0.0; - } else if (DUK_UNLIKELY(c == DUK_FP_INFINITE)) { - return x; - } else { - /* Finite, including neg/pos zero. Neg zero sign must be - * preserved. - */ - return duk_double_trunc_towards_zero(x); - } -#else /* DUK_USE_PREFER_SIZE */ - /* NaN and Infinity have the same exponent so it's a cheap - * initial check for the rare path. - */ - if (DUK_UNLIKELY(duk_double_is_nan_or_inf(x) != 0U)) { - if (duk_double_is_nan(x)) { - return 0.0; - } else { - return x; - } - } else { - return duk_double_trunc_towards_zero(x); - } -#endif /* DUK_USE_PREFER_SIZE */ -} - -DUK_INTERNAL duk_double_t duk_js_tointeger(duk_hthread *thr, duk_tval *tv) { - /* XXX: fastint */ - duk_double_t d = duk_js_tonumber(thr, tv); /* invalidates tv */ - return duk_js_tointeger_number(d); -} - -/* - * ToInt32(), ToUint32(), ToUint16() (E5 Sections 9.5, 9.6, 9.7) - */ - -/* combined algorithm matching E5 Sections 9.5 and 9.6 */ -DUK_LOCAL duk_double_t duk__toint32_touint32_helper(duk_double_t x, duk_bool_t is_toint32) { -#if defined(DUK_USE_PREFER_SIZE) - duk_small_int_t c; -#endif - -#if defined(DUK_USE_PREFER_SIZE) - c = (duk_small_int_t) DUK_FPCLASSIFY(x); - if (c == DUK_FP_NAN || c == DUK_FP_ZERO || c == DUK_FP_INFINITE) { - return 0.0; - } -#else - if (duk_double_is_nan_zero_inf(x)) { - return 0.0; - } -#endif - - /* x = sign(x) * floor(abs(x)), i.e. truncate towards zero, keep sign */ - x = duk_double_trunc_towards_zero(x); - - /* NOTE: fmod(x) result sign is same as sign of x, which - * differs from what Javascript wants (see Section 9.6). - */ - - x = DUK_FMOD(x, DUK_DOUBLE_2TO32); /* -> x in ]-2**32, 2**32[ */ - - if (x < 0.0) { - x += DUK_DOUBLE_2TO32; - } - DUK_ASSERT(x >= 0 && x < DUK_DOUBLE_2TO32); /* -> x in [0, 2**32[ */ - - if (is_toint32) { - if (x >= DUK_DOUBLE_2TO31) { - /* x in [2**31, 2**32[ */ - - x -= DUK_DOUBLE_2TO32; /* -> x in [-2**31,2**31[ */ - } - } - - return x; -} - -DUK_INTERNAL duk_int32_t duk_js_toint32(duk_hthread *thr, duk_tval *tv) { - duk_double_t d; - -#if defined(DUK_USE_FASTINT) - if (DUK_TVAL_IS_FASTINT(tv)) { - return DUK_TVAL_GET_FASTINT_I32(tv); - } -#endif - - d = duk_js_tonumber(thr, tv); /* invalidates tv */ - d = duk__toint32_touint32_helper(d, 1); - DUK_ASSERT(DUK_FPCLASSIFY(d) == DUK_FP_ZERO || DUK_FPCLASSIFY(d) == DUK_FP_NORMAL); - DUK_ASSERT(d >= -2147483648.0 && d <= 2147483647.0); /* [-0x80000000,0x7fffffff] */ - DUK_ASSERT(duk_double_equals(d, (duk_double_t) ((duk_int32_t) d))); /* whole, won't clip */ - return (duk_int32_t) d; -} - -DUK_INTERNAL duk_uint32_t duk_js_touint32(duk_hthread *thr, duk_tval *tv) { - duk_double_t d; - -#if defined(DUK_USE_FASTINT) - if (DUK_TVAL_IS_FASTINT(tv)) { - return DUK_TVAL_GET_FASTINT_U32(tv); - } -#endif - - d = duk_js_tonumber(thr, tv); /* invalidates tv */ - d = duk__toint32_touint32_helper(d, 0); - DUK_ASSERT(DUK_FPCLASSIFY(d) == DUK_FP_ZERO || DUK_FPCLASSIFY(d) == DUK_FP_NORMAL); - DUK_ASSERT(d >= 0.0 && d <= 4294967295.0); /* [0x00000000, 0xffffffff] */ - DUK_ASSERT(duk_double_equals(d, (duk_double_t) ((duk_uint32_t) d))); /* whole, won't clip */ - return (duk_uint32_t) d; -} - -DUK_INTERNAL duk_uint16_t duk_js_touint16(duk_hthread *thr, duk_tval *tv) { - /* should be a safe way to compute this */ - return (duk_uint16_t) (duk_js_touint32(thr, tv) & 0x0000ffffU); -} - -/* - * ToString() (E5 Section 9.8) - * ToObject() (E5 Section 9.9) - * CheckObjectCoercible() (E5 Section 9.10) - * IsCallable() (E5 Section 9.11) - * - * ==> implemented in the API. - */ - -/* - * Loose equality, strict equality, and SameValue (E5 Sections 11.9.1, 11.9.4, - * 9.12). These have much in common so they can share some helpers. - * - * Future work notes: - * - * - Current implementation (and spec definition) has recursion; this should - * be fixed if possible. - * - * - String-to-number coercion should be possible without going through the - * value stack (and be more compact) if a shared helper is invoked. - */ - -/* Note that this is the same operation for strict and loose equality: - * - E5 Section 11.9.3, step 1.c (loose) - * - E5 Section 11.9.6, step 4 (strict) - */ - -DUK_LOCAL duk_bool_t duk__js_equals_number(duk_double_t x, duk_double_t y) { -#if defined(DUK_USE_PARANOID_MATH) - /* Straightforward algorithm, makes fewer compiler assumptions. */ - duk_small_int_t cx = (duk_small_int_t) DUK_FPCLASSIFY(x); - duk_small_int_t cy = (duk_small_int_t) DUK_FPCLASSIFY(y); - if (cx == DUK_FP_NAN || cy == DUK_FP_NAN) { - return 0; - } - if (cx == DUK_FP_ZERO && cy == DUK_FP_ZERO) { - return 1; - } - if (x == y) { - return 1; - } - return 0; -#else /* DUK_USE_PARANOID_MATH */ - /* Better equivalent algorithm. If the compiler is compliant, C and - * ECMAScript semantics are identical for this particular comparison. - * In particular, NaNs must never compare equal and zeroes must compare - * equal regardless of sign. Could also use a macro, but this inlines - * already nicely (no difference on gcc, for instance). - */ - if (duk_double_equals(x, y)) { - /* IEEE requires that NaNs compare false */ - DUK_ASSERT(DUK_FPCLASSIFY(x) != DUK_FP_NAN); - DUK_ASSERT(DUK_FPCLASSIFY(y) != DUK_FP_NAN); - return 1; - } else { - /* IEEE requires that zeros compare the same regardless - * of their signed, so if both x and y are zeroes, they - * are caught above. - */ - DUK_ASSERT(!(DUK_FPCLASSIFY(x) == DUK_FP_ZERO && DUK_FPCLASSIFY(y) == DUK_FP_ZERO)); - return 0; - } -#endif /* DUK_USE_PARANOID_MATH */ -} - -DUK_LOCAL duk_bool_t duk__js_samevalue_number(duk_double_t x, duk_double_t y) { -#if defined(DUK_USE_PARANOID_MATH) - duk_small_int_t cx = (duk_small_int_t) DUK_FPCLASSIFY(x); - duk_small_int_t cy = (duk_small_int_t) DUK_FPCLASSIFY(y); - - if (cx == DUK_FP_NAN && cy == DUK_FP_NAN) { - /* SameValue(NaN, NaN) = true, regardless of NaN sign or extra bits */ - return 1; - } - if (cx == DUK_FP_ZERO && cy == DUK_FP_ZERO) { - /* Note: cannot assume that a non-zero return value of signbit() would - * always be the same -- hence cannot (portably) use something like: - * - * signbit(x) == signbit(y) - */ - duk_small_int_t sx = DUK_SIGNBIT(x) ? 1 : 0; - duk_small_int_t sy = DUK_SIGNBIT(y) ? 1 : 0; - return (sx == sy); - } - - /* normal comparison; known: - * - both x and y are not NaNs (but one of them can be) - * - both x and y are not zero (but one of them can be) - * - x and y may be denormal or infinite - */ - - return (x == y); -#else /* DUK_USE_PARANOID_MATH */ - duk_small_int_t cx = (duk_small_int_t) DUK_FPCLASSIFY(x); - duk_small_int_t cy = (duk_small_int_t) DUK_FPCLASSIFY(y); - - if (duk_double_equals(x, y)) { - /* IEEE requires that NaNs compare false */ - DUK_ASSERT(DUK_FPCLASSIFY(x) != DUK_FP_NAN); - DUK_ASSERT(DUK_FPCLASSIFY(y) != DUK_FP_NAN); - - /* Using classification has smaller footprint than direct comparison. */ - if (DUK_UNLIKELY(cx == DUK_FP_ZERO && cy == DUK_FP_ZERO)) { - /* Note: cannot assume that a non-zero return value of signbit() would - * always be the same -- hence cannot (portably) use something like: - * - * signbit(x) == signbit(y) - */ - return duk_double_same_sign(x, y); - } - return 1; - } else { - /* IEEE requires that zeros compare the same regardless - * of their sign, so if both x and y are zeroes, they - * are caught above. - */ - DUK_ASSERT(!(DUK_FPCLASSIFY(x) == DUK_FP_ZERO && DUK_FPCLASSIFY(y) == DUK_FP_ZERO)); - - /* Difference to non-strict/strict comparison is that NaNs compare - * equal and signed zero signs matter. - */ - if (DUK_UNLIKELY(cx == DUK_FP_NAN && cy == DUK_FP_NAN)) { - /* SameValue(NaN, NaN) = true, regardless of NaN sign or extra bits */ - return 1; - } - return 0; - } -#endif /* DUK_USE_PARANOID_MATH */ -} - -DUK_INTERNAL duk_bool_t duk_js_equals_helper(duk_hthread *thr, duk_tval *tv_x, duk_tval *tv_y, duk_small_uint_t flags) { - duk_uint_t type_mask_x; - duk_uint_t type_mask_y; - - /* If flags != 0 (strict or SameValue), thr can be NULL. For loose - * equals comparison it must be != NULL. - */ - DUK_ASSERT(flags != 0 || thr != NULL); - - /* - * Same type? - * - * Note: since number values have no explicit tag in the 8-byte - * representation, need the awkward if + switch. - */ - -#if defined(DUK_USE_FASTINT) - if (DUK_TVAL_IS_FASTINT(tv_x) && DUK_TVAL_IS_FASTINT(tv_y)) { - if (DUK_TVAL_GET_FASTINT(tv_x) == DUK_TVAL_GET_FASTINT(tv_y)) { - return 1; - } else { - return 0; - } - } else -#endif - if (DUK_TVAL_IS_NUMBER(tv_x) && DUK_TVAL_IS_NUMBER(tv_y)) { - duk_double_t d1, d2; - - /* Catches both doubles and cases where only one argument is - * a fastint so can't assume a double. - */ - d1 = DUK_TVAL_GET_NUMBER(tv_x); - d2 = DUK_TVAL_GET_NUMBER(tv_y); - if (DUK_UNLIKELY((flags & DUK_EQUALS_FLAG_SAMEVALUE) != 0)) { - /* SameValue */ - return duk__js_samevalue_number(d1, d2); - } else { - /* equals and strict equals */ - return duk__js_equals_number(d1, d2); - } - } else if (DUK_TVAL_GET_TAG(tv_x) == DUK_TVAL_GET_TAG(tv_y)) { - switch (DUK_TVAL_GET_TAG(tv_x)) { - case DUK_TAG_UNDEFINED: - case DUK_TAG_NULL: { - return 1; - } - case DUK_TAG_BOOLEAN: { - return DUK_TVAL_GET_BOOLEAN(tv_x) == DUK_TVAL_GET_BOOLEAN(tv_y); - } - case DUK_TAG_POINTER: { - return DUK_TVAL_GET_POINTER(tv_x) == DUK_TVAL_GET_POINTER(tv_y); - } - case DUK_TAG_STRING: - case DUK_TAG_OBJECT: { - /* Heap pointer comparison suffices for strings and objects. - * Symbols compare equal if they have the same internal - * representation; again heap pointer comparison suffices. - */ - return DUK_TVAL_GET_HEAPHDR(tv_x) == DUK_TVAL_GET_HEAPHDR(tv_y); - } - case DUK_TAG_BUFFER: { - /* In Duktape 2.x plain buffers mimic Uint8Array objects - * so always compare by heap pointer. In Duktape 1.x - * strict comparison would compare heap pointers and - * non-strict would compare contents. - */ - return DUK_TVAL_GET_HEAPHDR(tv_x) == DUK_TVAL_GET_HEAPHDR(tv_y); - } - case DUK_TAG_LIGHTFUNC: { - /* At least 'magic' has a significant impact on function - * identity. - */ - duk_small_uint_t lf_flags_x; - duk_small_uint_t lf_flags_y; - duk_c_function func_x; - duk_c_function func_y; - - DUK_TVAL_GET_LIGHTFUNC(tv_x, func_x, lf_flags_x); - DUK_TVAL_GET_LIGHTFUNC(tv_y, func_y, lf_flags_y); - return ((func_x == func_y) && (lf_flags_x == lf_flags_y)) ? 1 : 0; - } -#if defined(DUK_USE_FASTINT) - case DUK_TAG_FASTINT: -#endif - default: { - DUK_ASSERT(!DUK_TVAL_IS_UNUSED(tv_x)); - DUK_ASSERT(!DUK_TVAL_IS_UNUSED(tv_y)); - DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv_x)); - DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv_y)); - DUK_UNREACHABLE(); - DUK_WO_UNREACHABLE(return 0;); - } - } - } - - if ((flags & (DUK_EQUALS_FLAG_STRICT | DUK_EQUALS_FLAG_SAMEVALUE)) != 0) { - return 0; - } - - DUK_ASSERT(flags == 0); /* non-strict equality from here on */ - - /* - * Types are different; various cases for non-strict comparison - * - * Since comparison is symmetric, we use a "swap trick" to reduce - * code size. - */ - - type_mask_x = duk_get_type_mask_tval(tv_x); - type_mask_y = duk_get_type_mask_tval(tv_y); - - /* Undefined/null are considered equal (e.g. "null == undefined" -> true). */ - if ((type_mask_x & (DUK_TYPE_MASK_UNDEFINED | DUK_TYPE_MASK_NULL)) && - (type_mask_y & (DUK_TYPE_MASK_NULL | DUK_TYPE_MASK_UNDEFINED))) { - return 1; - } - - /* Number/string -> coerce string to number (e.g. "'1.5' == 1.5" -> true). */ - if ((type_mask_x & DUK_TYPE_MASK_NUMBER) && (type_mask_y & DUK_TYPE_MASK_STRING)) { - if (!DUK_TVAL_STRING_IS_SYMBOL(tv_y)) { - duk_double_t d1, d2; - d1 = DUK_TVAL_GET_NUMBER(tv_x); - d2 = duk_to_number_tval(thr, tv_y); - return duk__js_equals_number(d1, d2); - } - } - if ((type_mask_x & DUK_TYPE_MASK_STRING) && (type_mask_y & DUK_TYPE_MASK_NUMBER)) { - if (!DUK_TVAL_STRING_IS_SYMBOL(tv_x)) { - duk_double_t d1, d2; - d1 = DUK_TVAL_GET_NUMBER(tv_y); - d2 = duk_to_number_tval(thr, tv_x); - return duk__js_equals_number(d1, d2); - } - } - - /* Boolean/any -> coerce boolean to number and try again. If boolean is - * compared to a pointer, the final comparison after coercion now always - * yields false (as pointer vs. number compares to false), but this is - * not special cased. - * - * ToNumber(bool) is +1.0 or 0.0. Tagged boolean value is always 0 or 1. - */ - if (type_mask_x & DUK_TYPE_MASK_BOOLEAN) { - DUK_ASSERT(DUK_TVAL_GET_BOOLEAN(tv_x) == 0 || DUK_TVAL_GET_BOOLEAN(tv_x) == 1); - duk_push_uint(thr, DUK_TVAL_GET_BOOLEAN(tv_x)); - duk_push_tval(thr, tv_y); - goto recursive_call; - } - if (type_mask_y & DUK_TYPE_MASK_BOOLEAN) { - DUK_ASSERT(DUK_TVAL_GET_BOOLEAN(tv_y) == 0 || DUK_TVAL_GET_BOOLEAN(tv_y) == 1); - duk_push_tval(thr, tv_x); - duk_push_uint(thr, DUK_TVAL_GET_BOOLEAN(tv_y)); - goto recursive_call; - } - - /* String-number-symbol/object -> coerce object to primitive (apparently without hint), then try again. */ - if ((type_mask_x & (DUK_TYPE_MASK_STRING | DUK_TYPE_MASK_NUMBER)) && (type_mask_y & DUK_TYPE_MASK_OBJECT)) { - /* No symbol check needed because symbols and strings are accepted. */ - duk_push_tval(thr, tv_x); - duk_push_tval(thr, tv_y); - duk_to_primitive(thr, -1, DUK_HINT_NONE); /* apparently no hint? */ - goto recursive_call; - } - if ((type_mask_x & DUK_TYPE_MASK_OBJECT) && (type_mask_y & (DUK_TYPE_MASK_STRING | DUK_TYPE_MASK_NUMBER))) { - /* No symbol check needed because symbols and strings are accepted. */ - duk_push_tval(thr, tv_x); - duk_push_tval(thr, tv_y); - duk_to_primitive(thr, -2, DUK_HINT_NONE); /* apparently no hint? */ - goto recursive_call; - } - - /* Nothing worked -> not equal. */ - return 0; - -recursive_call: - /* Shared code path to call the helper again with arguments on stack top. */ - { - duk_bool_t rc; - rc = duk_js_equals_helper(thr, DUK_GET_TVAL_NEGIDX(thr, -2), DUK_GET_TVAL_NEGIDX(thr, -1), 0 /*flags:nonstrict*/); - duk_pop_2_unsafe(thr); - return rc; - } -} - -/* - * Comparisons (x >= y, x > y, x <= y, x < y) - * - * E5 Section 11.8.5: implement 'x < y' and then use negate and eval_left_first - * flags to get the rest. - */ - -/* XXX: this should probably just operate on the stack top, because it - * needs to push stuff on the stack anyway... - */ - -DUK_INTERNAL duk_small_int_t duk_js_data_compare(const duk_uint8_t *buf1, - const duk_uint8_t *buf2, - duk_size_t len1, - duk_size_t len2) { - duk_size_t prefix_len; - duk_small_int_t rc; - - prefix_len = (len1 <= len2 ? len1 : len2); - - /* duk_memcmp() is guaranteed to return zero (equal) for zero length - * inputs. - */ - rc = duk_memcmp_unsafe((const void *) buf1, (const void *) buf2, (size_t) prefix_len); - - if (rc < 0) { - return -1; - } else if (rc > 0) { - return 1; - } - - /* prefix matches, lengths matter now */ - if (len1 < len2) { - /* e.g. "x" < "xx" */ - return -1; - } else if (len1 > len2) { - return 1; - } - - return 0; -} - -DUK_INTERNAL duk_small_int_t duk_js_string_compare(duk_hstring *h1, duk_hstring *h2) { - /* - * String comparison (E5 Section 11.8.5, step 4), which - * needs to compare codepoint by codepoint. - * - * However, UTF-8 allows us to use strcmp directly: the shared - * prefix will be encoded identically (UTF-8 has unique encoding) - * and the first differing character can be compared with a simple - * unsigned byte comparison (which strcmp does). - * - * This will not work properly for non-xutf-8 strings, but this - * is not an issue for compliance. - */ - - DUK_ASSERT(h1 != NULL); - DUK_ASSERT(h2 != NULL); - - return duk_js_data_compare((const duk_uint8_t *) DUK_HSTRING_GET_DATA(h1), - (const duk_uint8_t *) DUK_HSTRING_GET_DATA(h2), - (duk_size_t) DUK_HSTRING_GET_BYTELEN(h1), - (duk_size_t) DUK_HSTRING_GET_BYTELEN(h2)); -} - -#if 0 /* unused */ -DUK_INTERNAL duk_small_int_t duk_js_buffer_compare(duk_heap *heap, duk_hbuffer *h1, duk_hbuffer *h2) { - /* Similar to String comparison. */ - - DUK_ASSERT(h1 != NULL); - DUK_ASSERT(h2 != NULL); - DUK_UNREF(heap); - - return duk_js_data_compare((const duk_uint8_t *) DUK_HBUFFER_GET_DATA_PTR(heap, h1), - (const duk_uint8_t *) DUK_HBUFFER_GET_DATA_PTR(heap, h2), - (duk_size_t) DUK_HBUFFER_GET_SIZE(h1), - (duk_size_t) DUK_HBUFFER_GET_SIZE(h2)); -} -#endif - -#if defined(DUK_USE_FASTINT) -DUK_LOCAL duk_bool_t duk__compare_fastint(duk_bool_t retval, duk_int64_t v1, duk_int64_t v2) { - DUK_ASSERT(retval == 0 || retval == 1); - if (v1 < v2) { - return retval ^ 1; - } else { - return retval; - } -} -#endif - -#if defined(DUK_USE_PARANOID_MATH) -DUK_LOCAL duk_bool_t duk__compare_number(duk_bool_t retval, duk_double_t d1, duk_double_t d2) { - duk_small_int_t c1, s1, c2, s2; - - DUK_ASSERT(retval == 0 || retval == 1); - c1 = (duk_small_int_t) DUK_FPCLASSIFY(d1); - s1 = (duk_small_int_t) DUK_SIGNBIT(d1); - c2 = (duk_small_int_t) DUK_FPCLASSIFY(d2); - s2 = (duk_small_int_t) DUK_SIGNBIT(d2); - - if (c1 == DUK_FP_NAN || c2 == DUK_FP_NAN) { - return 0; /* Always false, regardless of negation. */ - } - - if (c1 == DUK_FP_ZERO && c2 == DUK_FP_ZERO) { - /* For all combinations: +0 < +0, +0 < -0, -0 < +0, -0 < -0, - * steps e, f, and g. - */ - return retval; /* false */ - } - - if (d1 == d2) { - return retval; /* false */ - } - - if (c1 == DUK_FP_INFINITE && s1 == 0) { - /* x == +Infinity */ - return retval; /* false */ - } - - if (c2 == DUK_FP_INFINITE && s2 == 0) { - /* y == +Infinity */ - return retval ^ 1; /* true */ - } - - if (c2 == DUK_FP_INFINITE && s2 != 0) { - /* y == -Infinity */ - return retval; /* false */ - } - - if (c1 == DUK_FP_INFINITE && s1 != 0) { - /* x == -Infinity */ - return retval ^ 1; /* true */ - } - - if (d1 < d2) { - return retval ^ 1; /* true */ - } - - return retval; /* false */ -} -#else /* DUK_USE_PARANOID_MATH */ -DUK_LOCAL duk_bool_t duk__compare_number(duk_bool_t retval, duk_double_t d1, duk_double_t d2) { - /* This comparison tree relies doesn't match the exact steps in - * E5 Section 11.8.5 but should produce the same results. The - * steps rely on exact IEEE semantics for NaNs, etc. - */ - - DUK_ASSERT(retval == 0 || retval == 1); - if (d1 < d2) { - /* In no case should both (d1 < d2) and (d2 < d1) be true. - * It's possible that neither is true though, and that's - * handled below. - */ - DUK_ASSERT(!(d2 < d1)); - - /* - d1 < d2, both d1/d2 are normals (not Infinity, not NaN) - * - d2 is +Infinity, d1 != +Infinity and NaN - * - d1 is -Infinity, d2 != -Infinity and NaN - */ - return retval ^ 1; - } else { - if (d2 < d1) { - /* - !(d1 < d2), both d1/d2 are normals (not Infinity, not NaN) - * - d1 is +Infinity, d2 != +Infinity and NaN - * - d2 is -Infinity, d1 != -Infinity and NaN - */ - return retval; - } else { - /* - d1 and/or d2 is NaN - * - d1 and d2 are both +/- 0 - * - d1 == d2 (including infinities) - */ - if (duk_double_is_nan(d1) || duk_double_is_nan(d2)) { - /* Note: undefined from Section 11.8.5 always - * results in false return (see e.g. Section - * 11.8.3) - hence special treatment here. - */ - return 0; /* zero regardless of negation */ - } else { - return retval; - } - } - } -} -#endif /* DUK_USE_PARANOID_MATH */ - -DUK_INTERNAL duk_bool_t duk_js_compare_helper(duk_hthread *thr, duk_tval *tv_x, duk_tval *tv_y, duk_small_uint_t flags) { - duk_double_t d1, d2; - duk_small_int_t rc; - duk_bool_t retval; - - DUK_ASSERT(DUK_COMPARE_FLAG_NEGATE == 1); /* Rely on this flag being lowest. */ - retval = flags & DUK_COMPARE_FLAG_NEGATE; - DUK_ASSERT(retval == 0 || retval == 1); - - /* Fast path for fastints */ -#if defined(DUK_USE_FASTINT) - if (DUK_LIKELY(DUK_TVAL_IS_FASTINT(tv_x) && DUK_TVAL_IS_FASTINT(tv_y))) { - return duk__compare_fastint(retval, DUK_TVAL_GET_FASTINT(tv_x), DUK_TVAL_GET_FASTINT(tv_y)); - } -#endif /* DUK_USE_FASTINT */ - - /* Fast path for numbers (one of which may be a fastint) */ -#if !defined(DUK_USE_PREFER_SIZE) - if (DUK_LIKELY(DUK_TVAL_IS_NUMBER(tv_x) && DUK_TVAL_IS_NUMBER(tv_y))) { - return duk__compare_number(retval, DUK_TVAL_GET_NUMBER(tv_x), DUK_TVAL_GET_NUMBER(tv_y)); - } -#endif - - /* Slow path */ - - duk_push_tval(thr, tv_x); - duk_push_tval(thr, tv_y); - - if (flags & DUK_COMPARE_FLAG_EVAL_LEFT_FIRST) { - duk_to_primitive(thr, -2, DUK_HINT_NUMBER); - duk_to_primitive(thr, -1, DUK_HINT_NUMBER); - } else { - duk_to_primitive(thr, -1, DUK_HINT_NUMBER); - duk_to_primitive(thr, -2, DUK_HINT_NUMBER); - } - - /* Note: reuse variables */ - tv_x = DUK_GET_TVAL_NEGIDX(thr, -2); - tv_y = DUK_GET_TVAL_NEGIDX(thr, -1); - - if (DUK_TVAL_IS_STRING(tv_x) && DUK_TVAL_IS_STRING(tv_y)) { - duk_hstring *h1 = DUK_TVAL_GET_STRING(tv_x); - duk_hstring *h2 = DUK_TVAL_GET_STRING(tv_y); - DUK_ASSERT(h1 != NULL); - DUK_ASSERT(h2 != NULL); - - if (DUK_LIKELY(!DUK_HSTRING_HAS_SYMBOL(h1) && !DUK_HSTRING_HAS_SYMBOL(h2))) { - rc = duk_js_string_compare(h1, h2); - duk_pop_2_unsafe(thr); - if (rc < 0) { - return retval ^ 1; - } else { - return retval; - } - } - - /* One or both are Symbols: fall through to handle in the - * generic path. Concretely, ToNumber() will fail. - */ - } - - /* Ordering should not matter (E5 Section 11.8.5, step 3.a). */ -#if 0 - if (flags & DUK_COMPARE_FLAG_EVAL_LEFT_FIRST) { - d1 = duk_to_number_m2(thr); - d2 = duk_to_number_m1(thr); - } else { - d2 = duk_to_number_m1(thr); - d1 = duk_to_number_m2(thr); - } -#endif - d1 = duk_to_number_m2(thr); - d2 = duk_to_number_m1(thr); - - /* We want to duk_pop_2_unsafe(thr); because the values are numbers - * no decref check is needed. - */ -#if defined(DUK_USE_PREFER_SIZE) - duk_pop_2_nodecref_unsafe(thr); -#else - DUK_ASSERT(!DUK_TVAL_NEEDS_REFCOUNT_UPDATE(duk_get_tval(thr, -2))); - DUK_ASSERT(!DUK_TVAL_NEEDS_REFCOUNT_UPDATE(duk_get_tval(thr, -1))); - DUK_ASSERT(duk_get_top(thr) >= 2); - thr->valstack_top -= 2; - tv_x = thr->valstack_top; - tv_y = tv_x + 1; - DUK_TVAL_SET_UNDEFINED(tv_x); /* Value stack policy */ - DUK_TVAL_SET_UNDEFINED(tv_y); -#endif - - return duk__compare_number(retval, d1, d2); -} - -/* - * instanceof - */ - -/* - * ES2015 Section 7.3.19 describes the OrdinaryHasInstance() algorithm - * which covers both bound and non-bound functions; in effect the algorithm - * includes E5 Sections 11.8.6, 15.3.5.3, and 15.3.4.5.3. - * - * ES2015 Section 12.9.4 describes the instanceof operator which first - * checks @@hasInstance well-known symbol and falls back to - * OrdinaryHasInstance(). - * - * Limited Proxy support: don't support 'getPrototypeOf' trap but - * continue lookup in Proxy target if the value is a Proxy. - */ - -DUK_LOCAL duk_bool_t duk__js_instanceof_helper(duk_hthread *thr, duk_tval *tv_x, duk_tval *tv_y, duk_bool_t skip_sym_check) { - duk_hobject *func; - duk_hobject *val; - duk_hobject *proto; - duk_tval *tv; - duk_bool_t skip_first; - duk_uint_t sanity; - - /* - * Get the values onto the stack first. It would be possible to cover - * some normal cases without resorting to the value stack. - * - * The right hand side could be a light function (as they generally - * behave like objects). Light functions never have a 'prototype' - * property so E5.1 Section 15.3.5.3 step 3 always throws a TypeError. - * Using duk_require_hobject() is thus correct (except for error msg). - */ - - duk_push_tval(thr, tv_x); - duk_push_tval(thr, tv_y); - func = duk_require_hobject(thr, -1); - DUK_ASSERT(func != NULL); - -#if defined(DUK_USE_SYMBOL_BUILTIN) - /* - * @@hasInstance check, ES2015 Section 12.9.4, Steps 2-4. - */ - if (!skip_sym_check) { - if (duk_get_method_stridx(thr, -1, DUK_STRIDX_WELLKNOWN_SYMBOL_HAS_INSTANCE)) { - /* [ ... lhs rhs func ] */ - duk_insert(thr, -3); /* -> [ ... func lhs rhs ] */ - duk_swap_top(thr, -2); /* -> [ ... func rhs(this) lhs ] */ - duk_call_method(thr, 1); - return duk_to_boolean_top_pop(thr); - } - } -#else - DUK_UNREF(skip_sym_check); -#endif - - /* - * For bound objects, [[HasInstance]] just calls the target function - * [[HasInstance]]. If that is again a bound object, repeat until - * we find a non-bound Function object. - * - * The bound function chain is now "collapsed" so there can be only - * one bound function in the chain. - */ - - if (!DUK_HOBJECT_IS_CALLABLE(func)) { - /* - * Note: of native ECMAScript objects, only Function instances - * have a [[HasInstance]] internal property. Custom objects might - * also have it, but not in current implementation. - * - * XXX: add a separate flag, DUK_HOBJECT_FLAG_ALLOW_INSTANCEOF? - */ - goto error_invalid_rval; - } - - if (DUK_HOBJECT_HAS_BOUNDFUNC(func)) { - duk_push_tval(thr, &((duk_hboundfunc *) (void *) func)->target); - duk_replace(thr, -2); - func = duk_require_hobject(thr, -1); /* lightfunc throws */ - - /* Rely on Function.prototype.bind() never creating bound - * functions whose target is not proper. - */ - DUK_ASSERT(func != NULL); - DUK_ASSERT(DUK_HOBJECT_IS_CALLABLE(func)); - } - - /* - * 'func' is now a non-bound object which supports [[HasInstance]] - * (which here just means DUK_HOBJECT_FLAG_CALLABLE). Move on - * to execute E5 Section 15.3.5.3. - */ - - DUK_ASSERT(func != NULL); - DUK_ASSERT(!DUK_HOBJECT_HAS_BOUNDFUNC(func)); - DUK_ASSERT(DUK_HOBJECT_IS_CALLABLE(func)); - - /* [ ... lval rval(func) ] */ - - /* For lightfuncs, buffers, and pointers start the comparison directly - * from the virtual prototype object. - */ - skip_first = 0; - tv = DUK_GET_TVAL_NEGIDX(thr, -2); - switch (DUK_TVAL_GET_TAG(tv)) { - case DUK_TAG_LIGHTFUNC: - val = thr->builtins[DUK_BIDX_FUNCTION_PROTOTYPE]; - DUK_ASSERT(val != NULL); - break; - case DUK_TAG_BUFFER: - val = thr->builtins[DUK_BIDX_UINT8ARRAY_PROTOTYPE]; - DUK_ASSERT(val != NULL); - break; - case DUK_TAG_POINTER: - val = thr->builtins[DUK_BIDX_POINTER_PROTOTYPE]; - DUK_ASSERT(val != NULL); - break; - case DUK_TAG_OBJECT: - skip_first = 1; /* Ignore object itself on first round. */ - val = DUK_TVAL_GET_OBJECT(tv); - DUK_ASSERT(val != NULL); - break; - default: - goto pop2_and_false; - } - DUK_ASSERT(val != NULL); /* Loop doesn't actually rely on this. */ - - /* Look up .prototype of rval. Leave it on the value stack in case it - * has been virtualized (e.g. getter, Proxy trap). - */ - duk_get_prop_stridx_short(thr, -1, DUK_STRIDX_PROTOTYPE); /* -> [ ... lval rval rval.prototype ] */ -#if defined(DUK_USE_VERBOSE_ERRORS) - proto = duk_get_hobject(thr, -1); - if (proto == NULL) { - goto error_invalid_rval_noproto; - } -#else - proto = duk_require_hobject(thr, -1); -#endif - - sanity = DUK_HOBJECT_PROTOTYPE_CHAIN_SANITY; - do { - /* - * Note: prototype chain is followed BEFORE first comparison. This - * means that the instanceof lval is never itself compared to the - * rval.prototype property. This is apparently intentional, see E5 - * Section 15.3.5.3, step 4.a. - * - * Also note: - * - * js> (function() {}) instanceof Function - * true - * js> Function instanceof Function - * true - * - * For the latter, h_proto will be Function.prototype, which is the - * built-in Function prototype. Because Function.[[Prototype]] is - * also the built-in Function prototype, the result is true. - */ - - if (!val) { - goto pop3_and_false; - } - - DUK_ASSERT(val != NULL); -#if defined(DUK_USE_ES6_PROXY) - val = duk_hobject_resolve_proxy_target(val); -#endif - - if (skip_first) { - skip_first = 0; - } else if (val == proto) { - goto pop3_and_true; - } - - DUK_ASSERT(val != NULL); - val = DUK_HOBJECT_GET_PROTOTYPE(thr->heap, val); - } while (--sanity > 0); - - DUK_ASSERT(sanity == 0); - DUK_ERROR_RANGE(thr, DUK_STR_PROTOTYPE_CHAIN_LIMIT); - DUK_WO_NORETURN(return 0;); - -pop2_and_false: - duk_pop_2_unsafe(thr); - return 0; - -pop3_and_false: - duk_pop_3_unsafe(thr); - return 0; - -pop3_and_true: - duk_pop_3_unsafe(thr); - return 1; - -error_invalid_rval: - DUK_ERROR_TYPE(thr, DUK_STR_INVALID_INSTANCEOF_RVAL); - DUK_WO_NORETURN(return 0;); - -#if defined(DUK_USE_VERBOSE_ERRORS) -error_invalid_rval_noproto: - DUK_ERROR_TYPE(thr, DUK_STR_INVALID_INSTANCEOF_RVAL_NOPROTO); - DUK_WO_NORETURN(return 0;); -#endif -} - -#if defined(DUK_USE_SYMBOL_BUILTIN) -DUK_INTERNAL duk_bool_t duk_js_instanceof_ordinary(duk_hthread *thr, duk_tval *tv_x, duk_tval *tv_y) { - return duk__js_instanceof_helper(thr, tv_x, tv_y, 1 /*skip_sym_check*/); -} -#endif - -DUK_INTERNAL duk_bool_t duk_js_instanceof(duk_hthread *thr, duk_tval *tv_x, duk_tval *tv_y) { - return duk__js_instanceof_helper(thr, tv_x, tv_y, 0 /*skip_sym_check*/); -} - -/* - * in - */ - -/* - * E5 Sections 11.8.7, 8.12.6. - * - * Basically just a property existence check using [[HasProperty]]. - */ - -DUK_INTERNAL duk_bool_t duk_js_in(duk_hthread *thr, duk_tval *tv_x, duk_tval *tv_y) { - duk_bool_t retval; - - /* - * Get the values onto the stack first. It would be possible to cover - * some normal cases without resorting to the value stack (e.g. if - * lval is already a string). - */ - - /* XXX: The ES5/5.1/6 specifications require that the key in 'key in obj' - * must be string coerced before the internal HasProperty() algorithm is - * invoked. A fast path skipping coercion could be safely implemented for - * numbers (as number-to-string coercion has no side effects). For ES2015 - * proxy behavior, the trap 'key' argument must be in a string coerced - * form (which is a shame). - */ - - /* TypeError if rval is not an object or object like (e.g. lightfunc - * or plain buffer). - */ - duk_push_tval(thr, tv_x); - duk_push_tval(thr, tv_y); - duk_require_type_mask(thr, -1, DUK_TYPE_MASK_OBJECT | DUK_TYPE_MASK_LIGHTFUNC | DUK_TYPE_MASK_BUFFER); - - (void) duk_to_property_key_hstring(thr, -2); - - retval = duk_hobject_hasprop(thr, DUK_GET_TVAL_NEGIDX(thr, -1), DUK_GET_TVAL_NEGIDX(thr, -2)); - - duk_pop_2_unsafe(thr); - return retval; -} - -/* - * typeof - * - * E5 Section 11.4.3. - * - * Very straightforward. The only question is what to return for our - * non-standard tag / object types. - * - * There is an unfortunate string constant define naming problem with - * typeof return values for e.g. "Object" and "object"; careful with - * the built-in string defines. The LC_XXX defines are used for the - * lowercase variants now. - */ - -DUK_INTERNAL duk_small_uint_t duk_js_typeof_stridx(duk_tval *tv_x) { - duk_small_uint_t stridx = 0; - - switch (DUK_TVAL_GET_TAG(tv_x)) { - case DUK_TAG_UNDEFINED: { - stridx = DUK_STRIDX_LC_UNDEFINED; - break; - } - case DUK_TAG_NULL: { - /* Note: not a typo, "object" is returned for a null value. */ - stridx = DUK_STRIDX_LC_OBJECT; - break; - } - case DUK_TAG_BOOLEAN: { - stridx = DUK_STRIDX_LC_BOOLEAN; - break; - } - case DUK_TAG_POINTER: { - /* Implementation specific. */ - stridx = DUK_STRIDX_LC_POINTER; - break; - } - case DUK_TAG_STRING: { - duk_hstring *str; - - /* All internal keys are identified as Symbols. */ - str = DUK_TVAL_GET_STRING(tv_x); - DUK_ASSERT(str != NULL); - if (DUK_UNLIKELY(DUK_HSTRING_HAS_SYMBOL(str))) { - stridx = DUK_STRIDX_LC_SYMBOL; - } else { - stridx = DUK_STRIDX_LC_STRING; - } - break; - } - case DUK_TAG_OBJECT: { - duk_hobject *obj = DUK_TVAL_GET_OBJECT(tv_x); - DUK_ASSERT(obj != NULL); - if (DUK_HOBJECT_IS_CALLABLE(obj)) { - stridx = DUK_STRIDX_LC_FUNCTION; - } else { - stridx = DUK_STRIDX_LC_OBJECT; - } - break; - } - case DUK_TAG_BUFFER: { - /* Implementation specific. In Duktape 1.x this would be - * 'buffer', in Duktape 2.x changed to 'object' because plain - * buffers now mimic Uint8Array objects. - */ - stridx = DUK_STRIDX_LC_OBJECT; - break; - } - case DUK_TAG_LIGHTFUNC: { - stridx = DUK_STRIDX_LC_FUNCTION; - break; - } -#if defined(DUK_USE_FASTINT) - case DUK_TAG_FASTINT: -#endif - default: { - /* number */ - DUK_ASSERT(!DUK_TVAL_IS_UNUSED(tv_x)); - DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv_x)); - stridx = DUK_STRIDX_LC_NUMBER; - break; - } - } - - DUK_ASSERT_STRIDX_VALID(stridx); - return stridx; -} - -/* - * IsArray() - */ - -DUK_INTERNAL duk_bool_t duk_js_isarray_hobject(duk_hobject *h) { - DUK_ASSERT(h != NULL); -#if defined(DUK_USE_ES6_PROXY) - h = duk_hobject_resolve_proxy_target(h); -#endif - return (DUK_HOBJECT_GET_CLASS_NUMBER(h) == DUK_HOBJECT_CLASS_ARRAY ? 1 : 0); -} - -DUK_INTERNAL duk_bool_t duk_js_isarray(duk_tval *tv) { - DUK_ASSERT(tv != NULL); - if (DUK_TVAL_IS_OBJECT(tv)) { - return duk_js_isarray_hobject(DUK_TVAL_GET_OBJECT(tv)); - } - return 0; -} - -/* - * Array index and length - * - * Array index: E5 Section 15.4 - * Array length: E5 Section 15.4.5.1 steps 3.c - 3.d (array length write) - */ - -/* Compure array index from string context, or return a "not array index" - * indicator. - */ -DUK_INTERNAL duk_uarridx_t duk_js_to_arrayindex_string(const duk_uint8_t *str, duk_uint32_t blen) { - duk_uarridx_t res; - - /* Only strings with byte length 1-10 can be 32-bit array indices. - * Leading zeroes (except '0' alone), plus/minus signs are not allowed. - * We could do a lot of prechecks here, but since most strings won't - * start with any digits, it's simpler to just parse the number and - * fail quickly. - */ - - res = 0; - if (blen == 0) { - goto parse_fail; - } - do { - duk_uarridx_t dig; - dig = (duk_uarridx_t) (*str++) - DUK_ASC_0; - - if (dig <= 9U) { - /* Careful overflow handling. When multiplying by 10: - * - 0x19999998 x 10 = 0xfffffff0: no overflow, and adding - * 0...9 is safe. - * - 0x19999999 x 10 = 0xfffffffa: no overflow, adding - * 0...5 is safe, 6...9 overflows. - * - 0x1999999a x 10 = 0x100000004: always overflow. - */ - if (DUK_UNLIKELY(res >= 0x19999999UL)) { - if (res >= 0x1999999aUL) { - /* Always overflow. */ - goto parse_fail; - } - DUK_ASSERT(res == 0x19999999UL); - if (dig >= 6U) { - goto parse_fail; - } - res = 0xfffffffaUL + dig; - DUK_ASSERT(res >= 0xfffffffaUL); - DUK_ASSERT_DISABLE(res <= 0xffffffffUL); /* range */ - } else { - res = res * 10U + dig; - if (DUK_UNLIKELY(res == 0)) { - /* If 'res' is 0, previous 'res' must - * have been 0 and we scanned in a zero. - * This is only allowed if blen == 1, - * i.e. the exact string '0'. - */ - if (blen == (duk_uint32_t) 1) { - return 0; - } - goto parse_fail; - } - } - } else { - /* Because 'dig' is unsigned, catches both values - * above '9' and below '0'. - */ - goto parse_fail; - } - } while (--blen > 0); - - return res; - -parse_fail: - return DUK_HSTRING_NO_ARRAY_INDEX; -} - -#if !defined(DUK_USE_HSTRING_ARRIDX) -/* Get array index for a string which is known to be an array index. This helper - * is needed when duk_hstring doesn't concretely store the array index, but strings - * are flagged as array indices at intern time. - */ -DUK_INTERNAL duk_uarridx_t duk_js_to_arrayindex_hstring_fast_known(duk_hstring *h) { - const duk_uint8_t *p; - duk_uarridx_t res; - duk_uint8_t t; - - DUK_ASSERT(h != NULL); - DUK_ASSERT(DUK_HSTRING_HAS_ARRIDX(h)); - - p = DUK_HSTRING_GET_DATA(h); - res = 0; - for (;;) { - t = *p++; - if (DUK_UNLIKELY(t == 0)) { - /* Scanning to NUL is always safe for interned strings. */ - break; - } - DUK_ASSERT(t >= (duk_uint8_t) DUK_ASC_0 && t <= (duk_uint8_t) DUK_ASC_9); - res = res * 10U + (duk_uarridx_t) t - (duk_uarridx_t) DUK_ASC_0; - } - return res; -} - -DUK_INTERNAL duk_uarridx_t duk_js_to_arrayindex_hstring_fast(duk_hstring *h) { - DUK_ASSERT(h != NULL); - if (!DUK_HSTRING_HAS_ARRIDX(h)) { - return DUK_HSTRING_NO_ARRAY_INDEX; - } - return duk_js_to_arrayindex_hstring_fast_known(h); -} -#endif /* DUK_USE_HSTRING_ARRIDX */ -#line 1 "duk_js_var.c" -/* - * Identifier access and function closure handling. - * - * Provides the primitives for slow path identifier accesses: GETVAR, - * PUTVAR, DELVAR, etc. The fast path, direct register accesses, should - * be used for most identifier accesses. Consequently, these slow path - * primitives should be optimized for maximum compactness. - * - * ECMAScript environment records (declarative and object) are represented - * as internal objects with control keys. Environment records have a - * parent record ("outer environment reference") which is represented by - * the implicit prototype for technical reasons (in other words, it is a - * convenient field). The prototype chain is not followed in the ordinary - * sense for variable lookups. - * - * See identifier-handling.rst for more details on the identifier algorithms - * and the internal representation. See function-objects.rst for details on - * what function templates and instances are expected to look like. - * - * Care must be taken to avoid duk_tval pointer invalidation caused by - * e.g. value stack or object resizing. - * - * TODO: properties for function instances could be initialized much more - * efficiently by creating a property allocation for a certain size and - * filling in keys and values directly (and INCREFing both with "bulk incref" - * primitives. - * - * XXX: duk_hobject_getprop() and duk_hobject_putprop() calls are a bit - * awkward (especially because they follow the prototype chain); rework - * if "raw" own property helpers are added. - */ - -/* #include duk_internal.h -> already included */ - -/* - * Local result type for duk__get_identifier_reference() lookup. - */ - -typedef struct { - duk_hobject *env; - duk_hobject *holder; /* for object-bound identifiers */ - duk_tval *value; /* for register-bound and declarative env identifiers */ - duk_uint_t attrs; /* property attributes for identifier (relevant if value != NULL) */ - duk_bool_t has_this; /* for object-bound identifiers: provide 'this' binding */ -} duk__id_lookup_result; - -/* - * Create a new function object based on a "template function" which contains - * compiled bytecode, constants, etc, but lacks a lexical environment. - * - * ECMAScript requires that each created closure is a separate object, with - * its own set of editable properties. However, structured property values - * (such as the formal arguments list and the variable map) are shared. - * Also the bytecode, constants, and inner functions are shared. - * - * See E5 Section 13.2 for detailed requirements on the function objects; - * there are no similar requirements for function "templates" which are an - * implementation dependent internal feature. Also see function-objects.rst - * for a discussion on the function instance properties provided by this - * implementation. - * - * Notes: - * - * * Order of internal properties should match frequency of use, since the - * properties will be linearly scanned on lookup (functions usually don't - * have enough properties to warrant a hash part). - * - * * The created closure is independent of its template; they do share the - * same 'data' buffer object, but the template object itself can be freed - * even if the closure object remains reachable. - */ - -DUK_LOCAL void duk__inc_data_inner_refcounts(duk_hthread *thr, duk_hcompfunc *f) { - duk_tval *tv, *tv_end; - duk_hobject **funcs, **funcs_end; - - DUK_UNREF(thr); - - /* If function creation fails due to out-of-memory, the data buffer - * pointer may be NULL in some cases. That's actually possible for - * GC code, but shouldn't be possible here because the incomplete - * function will be unwound from the value stack and never instantiated. - */ - DUK_ASSERT(DUK_HCOMPFUNC_GET_DATA(thr->heap, f) != NULL); - - tv = DUK_HCOMPFUNC_GET_CONSTS_BASE(thr->heap, f); - tv_end = DUK_HCOMPFUNC_GET_CONSTS_END(thr->heap, f); - while (tv < tv_end) { - DUK_TVAL_INCREF(thr, tv); - tv++; - } - - funcs = DUK_HCOMPFUNC_GET_FUNCS_BASE(thr->heap, f); - funcs_end = DUK_HCOMPFUNC_GET_FUNCS_END(thr->heap, f); - while (funcs < funcs_end) { - DUK_HEAPHDR_INCREF(thr, (duk_heaphdr *) *funcs); - funcs++; - } -} - -/* Push a new closure on the stack. - * - * Note: if fun_temp has NEWENV, i.e. a new lexical and variable declaration - * is created when the function is called, only outer_lex_env matters - * (outer_var_env is ignored and may or may not be same as outer_lex_env). - */ - -DUK_LOCAL const duk_uint16_t duk__closure_copy_proplist[] = { - /* order: most frequent to least frequent */ - DUK_STRIDX_INT_VARMAP, - DUK_STRIDX_INT_FORMALS, -#if defined(DUK_USE_PC2LINE) - DUK_STRIDX_INT_PC2LINE, -#endif -#if defined(DUK_USE_FUNC_FILENAME_PROPERTY) - DUK_STRIDX_FILE_NAME, -#endif -#if defined(DUK_USE_NONSTD_FUNC_SOURCE_PROPERTY) - DUK_STRIDX_INT_SOURCE -#endif -}; - -DUK_INTERNAL -void duk_js_push_closure(duk_hthread *thr, - duk_hcompfunc *fun_temp, - duk_hobject *outer_var_env, - duk_hobject *outer_lex_env, - duk_bool_t add_auto_proto) { - duk_hcompfunc *fun_clos; - duk_harray *formals; - duk_small_uint_t i; - duk_uint_t len_value; - - DUK_ASSERT(fun_temp != NULL); - DUK_ASSERT(DUK_HCOMPFUNC_GET_DATA(thr->heap, fun_temp) != NULL); - DUK_ASSERT(DUK_HCOMPFUNC_GET_FUNCS(thr->heap, fun_temp) != NULL); - DUK_ASSERT(DUK_HCOMPFUNC_GET_BYTECODE(thr->heap, fun_temp) != NULL); - DUK_ASSERT(outer_var_env != NULL); - DUK_ASSERT(outer_lex_env != NULL); - DUK_UNREF(len_value); - - DUK_STATS_INC(thr->heap, stats_envrec_pushclosure); - - fun_clos = duk_push_hcompfunc(thr); - DUK_ASSERT(fun_clos != NULL); - DUK_ASSERT(DUK_HOBJECT_GET_PROTOTYPE(thr->heap, (duk_hobject *) fun_clos) == thr->builtins[DUK_BIDX_FUNCTION_PROTOTYPE]); - - duk_push_hobject(thr, &fun_temp->obj); /* -> [ ... closure template ] */ - - DUK_ASSERT(DUK_HOBJECT_IS_COMPFUNC((duk_hobject *) fun_clos)); - DUK_ASSERT(DUK_HCOMPFUNC_GET_DATA(thr->heap, fun_clos) == NULL); - DUK_ASSERT(DUK_HCOMPFUNC_GET_FUNCS(thr->heap, fun_clos) == NULL); - DUK_ASSERT(DUK_HCOMPFUNC_GET_BYTECODE(thr->heap, fun_clos) == NULL); - - DUK_HCOMPFUNC_SET_DATA(thr->heap, fun_clos, DUK_HCOMPFUNC_GET_DATA(thr->heap, fun_temp)); - DUK_HCOMPFUNC_SET_FUNCS(thr->heap, fun_clos, DUK_HCOMPFUNC_GET_FUNCS(thr->heap, fun_temp)); - DUK_HCOMPFUNC_SET_BYTECODE(thr->heap, fun_clos, DUK_HCOMPFUNC_GET_BYTECODE(thr->heap, fun_temp)); - - /* Note: all references inside 'data' need to get their refcounts - * upped too. This is the case because refcounts are decreased - * through every function referencing 'data' independently. - */ - - DUK_HBUFFER_INCREF(thr, DUK_HCOMPFUNC_GET_DATA(thr->heap, fun_clos)); - duk__inc_data_inner_refcounts(thr, fun_temp); - - fun_clos->nregs = fun_temp->nregs; - fun_clos->nargs = fun_temp->nargs; -#if defined(DUK_USE_DEBUGGER_SUPPORT) - fun_clos->start_line = fun_temp->start_line; - fun_clos->end_line = fun_temp->end_line; -#endif - - DUK_ASSERT(DUK_HCOMPFUNC_GET_DATA(thr->heap, fun_clos) != NULL); - DUK_ASSERT(DUK_HCOMPFUNC_GET_FUNCS(thr->heap, fun_clos) != NULL); - DUK_ASSERT(DUK_HCOMPFUNC_GET_BYTECODE(thr->heap, fun_clos) != NULL); - - /* XXX: Could also copy from template, but there's no way to have any - * other value here now (used code has no access to the template). - * Prototype is set by duk_push_hcompfunc(). - */ - DUK_ASSERT(DUK_HOBJECT_GET_PROTOTYPE(thr->heap, &fun_clos->obj) == thr->builtins[DUK_BIDX_FUNCTION_PROTOTYPE]); -#if 0 - DUK_HOBJECT_SET_PROTOTYPE_UPDREF(thr, &fun_clos->obj, thr->builtins[DUK_BIDX_FUNCTION_PROTOTYPE]); -#endif - - /* Copy duk_hobject flags as is from the template using a mask. - * Leave out duk_heaphdr owned flags just in case (e.g. if there's - * some GC flag or similar). Some flags can then be adjusted - * separately if necessary. - */ - - /* DUK_HEAPHDR_SET_FLAGS() masks changes to non-duk_heaphdr flags only. */ - DUK_HEAPHDR_SET_FLAGS((duk_heaphdr *) fun_clos, DUK_HEAPHDR_GET_FLAGS_RAW((duk_heaphdr *) fun_temp)); - DUK_DD(DUK_DDPRINT("fun_temp heaphdr flags: 0x%08lx, fun_clos heaphdr flags: 0x%08lx", - (unsigned long) DUK_HEAPHDR_GET_FLAGS_RAW((duk_heaphdr *) fun_temp), - (unsigned long) DUK_HEAPHDR_GET_FLAGS_RAW((duk_heaphdr *) fun_clos))); - - DUK_ASSERT(DUK_HOBJECT_HAS_EXTENSIBLE(&fun_clos->obj)); - DUK_ASSERT(!DUK_HOBJECT_HAS_BOUNDFUNC(&fun_clos->obj)); - DUK_ASSERT(DUK_HOBJECT_HAS_COMPFUNC(&fun_clos->obj)); - DUK_ASSERT(!DUK_HOBJECT_HAS_NATFUNC(&fun_clos->obj)); - DUK_ASSERT(!DUK_HOBJECT_IS_THREAD(&fun_clos->obj)); - /* DUK_HOBJECT_FLAG_ARRAY_PART: don't care */ - /* DUK_HOBJECT_FLAG_NEWENV: handled below */ - DUK_ASSERT(!DUK_HOBJECT_HAS_EXOTIC_ARRAY(&fun_clos->obj)); - DUK_ASSERT(!DUK_HOBJECT_HAS_EXOTIC_STRINGOBJ(&fun_clos->obj)); - DUK_ASSERT(!DUK_HOBJECT_HAS_EXOTIC_ARGUMENTS(&fun_clos->obj)); - - if (!DUK_HOBJECT_HAS_CONSTRUCTABLE(&fun_clos->obj)) { - /* If the template is not constructable don't add an automatic - * .prototype property. This is the case for e.g. ES2015 object - * literal getters/setters and method definitions. - */ - add_auto_proto = 0; - } - - /* - * Setup environment record properties based on the template and - * its flags. - * - * If DUK_HOBJECT_HAS_NEWENV(fun_temp) is true, the environment - * records represent identifiers "outside" the function; the - * "inner" environment records are created on demand. Otherwise, - * the environment records are those that will be directly used - * (e.g. for declarations). - * - * _Lexenv is always set; _Varenv defaults to _Lexenv if missing, - * so _Varenv is only set if _Lexenv != _Varenv. - * - * This is relatively complex, see doc/identifier-handling.rst. - */ - - if (DUK_HOBJECT_HAS_NEWENV(&fun_clos->obj)) { -#if defined(DUK_USE_FUNC_NAME_PROPERTY) - if (DUK_HOBJECT_HAS_NAMEBINDING(&fun_clos->obj)) { - duk_hobject *proto; - duk_hdecenv *new_env; - - /* - * Named function expression, name needs to be bound - * in an intermediate environment record. The "outer" - * lexical/variable environment will thus be: - * - * a) { funcname: , __prototype: outer_lex_env } - * b) { funcname: , __prototype: } (if outer_lex_env missing) - */ - - if (outer_lex_env) { - proto = outer_lex_env; - } else { - proto = thr->builtins[DUK_BIDX_GLOBAL_ENV]; - } - - /* -> [ ... closure template env ] */ - new_env = - duk_hdecenv_alloc(thr, - DUK_HOBJECT_FLAG_EXTENSIBLE | DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_DECENV)); - DUK_ASSERT(new_env != NULL); - duk_push_hobject(thr, (duk_hobject *) new_env); - - DUK_ASSERT(DUK_HOBJECT_GET_PROTOTYPE(thr->heap, (duk_hobject *) new_env) == NULL); - DUK_HOBJECT_SET_PROTOTYPE(thr->heap, (duk_hobject *) new_env, proto); - DUK_HOBJECT_INCREF_ALLOWNULL(thr, proto); - - DUK_ASSERT(new_env->thread == NULL); /* Closed. */ - DUK_ASSERT(new_env->varmap == NULL); - - /* It's important that duk_xdef_prop() is a 'raw define' so that any - * properties in an ancestor are never an issue (they should never be - * e.g. non-writable, but just in case). - * - * Because template objects are not visible to user code, the case - * where .name is missing shouldn't happen in practice. It it does, - * the name 'undefined' gets bound and maps to the closure (which is - * a bit odd, but safe). - */ - (void) duk_get_prop_stridx_short(thr, -2, DUK_STRIDX_NAME); - /* -> [ ... closure template env funcname ] */ - duk_dup_m4(thr); /* -> [ ... closure template env funcname closure ] */ - duk_xdef_prop(thr, -3, DUK_PROPDESC_FLAGS_NONE); /* -> [ ... closure template env ] */ - /* env[funcname] = closure */ - - /* [ ... closure template env ] */ - - DUK_HCOMPFUNC_SET_LEXENV(thr->heap, fun_clos, (duk_hobject *) new_env); - DUK_HCOMPFUNC_SET_VARENV(thr->heap, fun_clos, (duk_hobject *) new_env); - DUK_HOBJECT_INCREF(thr, (duk_hobject *) new_env); - DUK_HOBJECT_INCREF(thr, (duk_hobject *) new_env); - duk_pop_unsafe(thr); - - /* [ ... closure template ] */ - } else -#endif /* DUK_USE_FUNC_NAME_PROPERTY */ - { - /* - * Other cases (function declaration, anonymous function expression, - * strict direct eval code). The "outer" environment will be whatever - * the caller gave us. - */ - - DUK_HCOMPFUNC_SET_LEXENV(thr->heap, fun_clos, outer_lex_env); - DUK_HCOMPFUNC_SET_VARENV(thr->heap, fun_clos, outer_lex_env); - DUK_HOBJECT_INCREF(thr, outer_lex_env); - DUK_HOBJECT_INCREF(thr, outer_lex_env); - - /* [ ... closure template ] */ - } - } else { - /* - * Function gets no new environment when called. This is the - * case for global code, indirect eval code, and non-strict - * direct eval code. There is no direct correspondence to the - * E5 specification, as global/eval code is not exposed as a - * function. - */ - - DUK_ASSERT(!DUK_HOBJECT_HAS_NAMEBINDING(&fun_temp->obj)); - - DUK_HCOMPFUNC_SET_LEXENV(thr->heap, fun_clos, outer_lex_env); - DUK_HCOMPFUNC_SET_VARENV(thr->heap, fun_clos, outer_var_env); - DUK_HOBJECT_INCREF(thr, outer_lex_env); /* NULLs not allowed; asserted on entry */ - DUK_HOBJECT_INCREF(thr, outer_var_env); - } - DUK_DDD(DUK_DDDPRINT("closure varenv -> %!ipO, lexenv -> %!ipO", - (duk_heaphdr *) fun_clos->var_env, - (duk_heaphdr *) fun_clos->lex_env)); - - /* Call handling assumes this for all callable closures. */ - DUK_ASSERT(DUK_HCOMPFUNC_GET_LEXENV(thr->heap, fun_clos) != NULL); - DUK_ASSERT(DUK_HCOMPFUNC_GET_VARENV(thr->heap, fun_clos) != NULL); - - /* - * Copy some internal properties directly - * - * The properties will be non-writable and non-enumerable, but - * configurable. - * - * Function templates are bare objects, so inheritance of internal - * Symbols is not an issue here even when using ordinary property - * reads. The function instance created is not bare, so internal - * Symbols must be defined without inheritance checks. - */ - - /* [ ... closure template ] */ - - DUK_DDD(DUK_DDDPRINT("copying properties: closure=%!iT, template=%!iT", - (duk_tval *) duk_get_tval(thr, -2), - (duk_tval *) duk_get_tval(thr, -1))); - - for (i = 0; i < (duk_small_uint_t) (sizeof(duk__closure_copy_proplist) / sizeof(duk_uint16_t)); i++) { - duk_small_int_t stridx = (duk_small_int_t) duk__closure_copy_proplist[i]; - if (duk_xget_owndataprop_stridx_short(thr, -1, stridx)) { - /* [ ... closure template val ] */ - DUK_DDD(DUK_DDDPRINT("copying property, stridx=%ld -> found", (long) stridx)); - duk_xdef_prop_stridx_short(thr, -3, stridx, DUK_PROPDESC_FLAGS_C); - } else { - DUK_DDD(DUK_DDDPRINT("copying property, stridx=%ld -> not found", (long) stridx)); - duk_pop_unsafe(thr); - } - } - - /* - * "length" maps to number of formals (E5 Section 13.2) for function - * declarations/expressions (non-bound functions). Note that 'nargs' - * is NOT necessarily equal to the number of arguments. Use length - * of _Formals; if missing, assume nargs matches .length. - */ - - /* [ ... closure template ] */ - - formals = duk_hobject_get_formals(thr, (duk_hobject *) fun_temp); - if (formals) { - len_value = (duk_uint_t) formals->length; - DUK_DD(DUK_DDPRINT("closure length from _Formals -> %ld", (long) len_value)); - } else { - len_value = fun_temp->nargs; - DUK_DD(DUK_DDPRINT("closure length defaulted from nargs -> %ld", (long) len_value)); - } - - duk_push_uint(thr, len_value); /* [ ... closure template len_value ] */ - duk_xdef_prop_stridx_short(thr, -3, DUK_STRIDX_LENGTH, DUK_PROPDESC_FLAGS_C); - - /* - * "prototype" is, by default, a fresh object with the "constructor" - * property. - * - * Note that this creates a circular reference for every function - * instance (closure) which prevents refcount-based collection of - * function instances. - * - * XXX: Try to avoid creating the default prototype object, because - * many functions are not used as constructors and the default - * prototype is unnecessary. Perhaps it could be created on-demand - * when it is first accessed? - */ - - /* [ ... closure template ] */ - - if (add_auto_proto) { - duk_push_object(thr); /* -> [ ... closure template newobj ] */ - duk_dup_m3(thr); /* -> [ ... closure template newobj closure ] */ - duk_xdef_prop_stridx_short(thr, - -2, - DUK_STRIDX_CONSTRUCTOR, - DUK_PROPDESC_FLAGS_WC); /* -> [ ... closure template newobj ] */ - duk_compact(thr, -1); /* compact the prototype */ - duk_xdef_prop_stridx_short(thr, -3, DUK_STRIDX_PROTOTYPE, DUK_PROPDESC_FLAGS_W); /* -> [ ... closure template ] */ - } - - /* - * "arguments" and "caller" must be mapped to throwers for strict - * mode and bound functions (E5 Section 15.3.5). - * - * XXX: This is expensive to have for every strict function instance. - * Try to implement as virtual properties or on-demand created properties. - */ - - /* [ ... closure template ] */ - - if (DUK_HOBJECT_HAS_STRICT(&fun_clos->obj)) { - duk_xdef_prop_stridx_thrower(thr, -2, DUK_STRIDX_CALLER); - duk_xdef_prop_stridx_thrower(thr, -2, DUK_STRIDX_LC_ARGUMENTS); - } else { -#if defined(DUK_USE_NONSTD_FUNC_CALLER_PROPERTY) - DUK_DDD(DUK_DDDPRINT("function is non-strict and non-standard 'caller' property in use, add initial 'null' value")); - duk_push_null(thr); - duk_xdef_prop_stridx_short(thr, -3, DUK_STRIDX_CALLER, DUK_PROPDESC_FLAGS_NONE); -#else - DUK_DDD(DUK_DDDPRINT("function is non-strict and non-standard 'caller' property not used")); -#endif - } - - /* - * "name" used to be non-standard but is now defined by ES2015. - * In ES2015/ES2016 the .name property is configurable. - */ - - /* [ ... closure template ] */ - -#if defined(DUK_USE_FUNC_NAME_PROPERTY) - /* XXX: Look for own property only; doesn't matter much because - * templates are bare objects. - */ - if (duk_get_prop_stridx_short(thr, -1, DUK_STRIDX_NAME)) { - /* [ ... closure template name ] */ - DUK_ASSERT(duk_is_string(thr, -1)); - DUK_DD(DUK_DDPRINT("setting function instance name to %!T", duk_get_tval(thr, -1))); - duk_xdef_prop_stridx_short(thr, -3, DUK_STRIDX_NAME, DUK_PROPDESC_FLAGS_C); /* -> [ ... closure template ] */ - } else { - /* Anonymous functions don't have a .name in ES2015, so don't set - * it on the instance either. The instance will then inherit - * it from Function.prototype.name. - */ - DUK_DD(DUK_DDPRINT("not setting function instance .name")); - duk_pop_unsafe(thr); - } -#endif - - /* - * Compact the closure, in most cases no properties will be added later. - * Also, without this the closures end up having unused property slots - * (e.g. in Duktape 0.9.0, 8 slots would be allocated and only 7 used). - * A better future solution would be to allocate the closure directly - * to correct size (and setup the properties directly without going - * through the API). - */ - - duk_compact(thr, -2); - - /* - * Some assertions (E5 Section 13.2). - */ - - DUK_ASSERT(DUK_HOBJECT_GET_CLASS_NUMBER(&fun_clos->obj) == DUK_HOBJECT_CLASS_FUNCTION); - DUK_ASSERT(DUK_HOBJECT_GET_PROTOTYPE(thr->heap, &fun_clos->obj) == thr->builtins[DUK_BIDX_FUNCTION_PROTOTYPE]); - DUK_ASSERT(DUK_HOBJECT_HAS_EXTENSIBLE(&fun_clos->obj)); - DUK_ASSERT(duk_has_prop_stridx(thr, -2, DUK_STRIDX_LENGTH) != 0); - DUK_ASSERT(add_auto_proto == 0 || duk_has_prop_stridx(thr, -2, DUK_STRIDX_PROTOTYPE) != 0); - /* May be missing .name */ - DUK_ASSERT(!DUK_HOBJECT_HAS_STRICT(&fun_clos->obj) || duk_has_prop_stridx(thr, -2, DUK_STRIDX_CALLER) != 0); - DUK_ASSERT(!DUK_HOBJECT_HAS_STRICT(&fun_clos->obj) || duk_has_prop_stridx(thr, -2, DUK_STRIDX_LC_ARGUMENTS) != 0); - - /* - * Finish - */ - - /* [ ... closure template ] */ - - DUK_DDD(DUK_DDDPRINT("created function instance: template=%!iT -> closure=%!iT", - (duk_tval *) duk_get_tval(thr, -1), - (duk_tval *) duk_get_tval(thr, -2))); - - duk_pop_unsafe(thr); - - /* [ ... closure ] */ -} - -/* - * Delayed activation environment record initialization (for functions - * with NEWENV). - * - * The non-delayed initialization is handled by duk_handle_call(). - */ - -DUK_LOCAL void duk__preallocate_env_entries(duk_hthread *thr, duk_hobject *varmap, duk_hobject *env) { - duk_uint_fast32_t i; - - for (i = 0; i < (duk_uint_fast32_t) DUK_HOBJECT_GET_ENEXT(varmap); i++) { - duk_hstring *key; - - key = DUK_HOBJECT_E_GET_KEY(thr->heap, varmap, i); - DUK_ASSERT(key != NULL); /* assume keys are compact in _Varmap */ - DUK_ASSERT(!DUK_HOBJECT_E_SLOT_IS_ACCESSOR(thr->heap, varmap, i)); /* assume plain values */ - - /* Predefine as 'undefined' to reserve a property slot. - * This makes the unwind process (where register values - * are copied to the env object) safe against throwing. - * - * XXX: This could be made much faster by creating the - * property table directly. - */ - duk_push_undefined(thr); - DUK_DDD(DUK_DDDPRINT("preallocate env entry for key %!O", key)); - duk_hobject_define_property_internal(thr, env, key, DUK_PROPDESC_FLAGS_WE); - } -} - -/* shared helper */ -DUK_INTERNAL -duk_hobject *duk_create_activation_environment_record(duk_hthread *thr, duk_hobject *func, duk_size_t bottom_byteoff) { - duk_hdecenv *env; - duk_hobject *parent; - duk_hcompfunc *f; - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(func != NULL); - - DUK_STATS_INC(thr->heap, stats_envrec_create); - - f = (duk_hcompfunc *) func; - parent = DUK_HCOMPFUNC_GET_LEXENV(thr->heap, f); - if (!parent) { - parent = thr->builtins[DUK_BIDX_GLOBAL_ENV]; - } - - env = duk_hdecenv_alloc(thr, DUK_HOBJECT_FLAG_EXTENSIBLE | DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_DECENV)); - DUK_ASSERT(env != NULL); - duk_push_hobject(thr, (duk_hobject *) env); - - DUK_ASSERT(DUK_HOBJECT_GET_PROTOTYPE(thr->heap, (duk_hobject *) env) == NULL); - DUK_HOBJECT_SET_PROTOTYPE(thr->heap, (duk_hobject *) env, parent); - DUK_HOBJECT_INCREF_ALLOWNULL(thr, parent); /* parent env is the prototype */ - - /* open scope information, for compiled functions only */ - - DUK_ASSERT(env->thread == NULL); - DUK_ASSERT(env->varmap == NULL); - DUK_ASSERT(env->regbase_byteoff == 0); - if (DUK_HOBJECT_IS_COMPFUNC(func)) { - duk_hobject *varmap; - - varmap = duk_hobject_get_varmap(thr, func); - if (varmap != NULL) { - env->varmap = varmap; - DUK_HOBJECT_INCREF(thr, varmap); - env->thread = thr; - DUK_HTHREAD_INCREF(thr, thr); - env->regbase_byteoff = bottom_byteoff; - - /* Preallocate env property table to avoid potential - * for out-of-memory on unwind when the env is closed. - */ - duk__preallocate_env_entries(thr, varmap, (duk_hobject *) env); - } else { - /* If function has no _Varmap, leave the environment closed. */ - DUK_ASSERT(env->thread == NULL); - DUK_ASSERT(env->varmap == NULL); - DUK_ASSERT(env->regbase_byteoff == 0); - } - } - - return (duk_hobject *) env; -} - -DUK_INTERNAL -void duk_js_init_activation_environment_records_delayed(duk_hthread *thr, duk_activation *act) { - duk_hobject *func; - duk_hobject *env; - - DUK_ASSERT(thr != NULL); - func = DUK_ACT_GET_FUNC(act); - DUK_ASSERT(func != NULL); - DUK_ASSERT(!DUK_HOBJECT_HAS_BOUNDFUNC(func)); /* bound functions are never in act 'func' */ - - /* - * Delayed initialization only occurs for 'NEWENV' functions. - */ - - DUK_ASSERT(DUK_HOBJECT_HAS_NEWENV(func)); - DUK_ASSERT(act->lex_env == NULL); - DUK_ASSERT(act->var_env == NULL); - - DUK_STATS_INC(thr->heap, stats_envrec_delayedcreate); - - env = duk_create_activation_environment_record(thr, func, act->bottom_byteoff); - DUK_ASSERT(env != NULL); - /* 'act' is a stable pointer, so still OK. */ - - DUK_DDD(DUK_DDDPRINT("created delayed fresh env: %!ipO", (duk_heaphdr *) env)); -#if defined(DUK_USE_DEBUG_LEVEL) && (DUK_USE_DEBUG_LEVEL >= 2) - { - duk_hobject *p = env; - while (p) { - DUK_DDD(DUK_DDDPRINT(" -> %!ipO", (duk_heaphdr *) p)); - p = DUK_HOBJECT_GET_PROTOTYPE(thr->heap, p); - } - } -#endif - - act->lex_env = env; - act->var_env = env; - DUK_HOBJECT_INCREF(thr, env); /* XXX: incref by count (here 2 times) */ - DUK_HOBJECT_INCREF(thr, env); - - duk_pop_unsafe(thr); -} - -/* - * Closing environment records. - * - * The environment record MUST be closed with the thread where its activation - * is; i.e. if 'env' is open, 'thr' must match env->thread, and the regbase - * and varmap must still be valid. On entry, 'env' must be reachable. - */ - -DUK_INTERNAL void duk_js_close_environment_record(duk_hthread *thr, duk_hobject *env) { - duk_uint_fast32_t i; - duk_hobject *varmap; - duk_hstring *key; - duk_tval *tv; - duk_uint_t regnum; - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(env != NULL); - - if (DUK_UNLIKELY(!DUK_HOBJECT_IS_DECENV(env))) { - DUK_DDD(DUK_DDDPRINT("env not a declarative record: %!iO", (duk_heaphdr *) env)); - return; - } - - varmap = ((duk_hdecenv *) env)->varmap; - if (varmap == NULL) { - DUK_DDD(DUK_DDDPRINT("env already closed: %!iO", (duk_heaphdr *) env)); - - return; - } - DUK_ASSERT(((duk_hdecenv *) env)->thread != NULL); - DUK_HDECENV_ASSERT_VALID((duk_hdecenv *) env); - - DUK_DDD(DUK_DDDPRINT("closing env: %!iO", (duk_heaphdr *) env)); - DUK_DDD(DUK_DDDPRINT("varmap: %!O", (duk_heaphdr *) varmap)); - - /* Env must be closed in the same thread as where it runs. */ - DUK_ASSERT(((duk_hdecenv *) env)->thread == thr); - - /* XXX: additional conditions when to close variables? we don't want to do it - * unless the environment may have "escaped" (referenced in a function closure). - * With delayed environments, the existence is probably good enough of a check. - */ - - /* Note: we rely on the _Varmap having a bunch of nice properties, like: - * - being compacted and unmodified during this process - * - not containing an array part - * - having correct value types - */ - - DUK_DDD(DUK_DDDPRINT("copying bound register values, %ld bound regs", (long) DUK_HOBJECT_GET_ENEXT(varmap))); - - /* Copy over current variable values from value stack to the - * environment record. The scope object is empty but may - * inherit from another scope which has conflicting names. - */ - - /* XXX: Do this using a once allocated entry area, no side effects. - * Hash part would need special treatment however (maybe copy, and - * then realloc with hash part if large enough). - */ - for (i = 0; i < (duk_uint_fast32_t) DUK_HOBJECT_GET_ENEXT(varmap); i++) { - duk_size_t regbase_byteoff; - - key = DUK_HOBJECT_E_GET_KEY(thr->heap, varmap, i); - DUK_ASSERT(key != NULL); /* assume keys are compact in _Varmap */ - DUK_ASSERT(!DUK_HOBJECT_E_SLOT_IS_ACCESSOR(thr->heap, varmap, i)); /* assume plain values */ - - tv = DUK_HOBJECT_E_GET_VALUE_TVAL_PTR(thr->heap, varmap, i); - DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv)); - DUK_ASSERT(DUK_TVAL_GET_NUMBER(tv) <= (duk_double_t) DUK_UINT32_MAX); /* limits */ -#if defined(DUK_USE_FASTINT) - DUK_ASSERT(DUK_TVAL_IS_FASTINT(tv)); - regnum = (duk_uint_t) DUK_TVAL_GET_FASTINT_U32(tv); -#else - regnum = (duk_uint_t) DUK_TVAL_GET_NUMBER(tv); -#endif - - regbase_byteoff = ((duk_hdecenv *) env)->regbase_byteoff; - DUK_ASSERT((duk_uint8_t *) thr->valstack + regbase_byteoff + sizeof(duk_tval) * regnum >= - (duk_uint8_t *) thr->valstack); - DUK_ASSERT((duk_uint8_t *) thr->valstack + regbase_byteoff + sizeof(duk_tval) * regnum < - (duk_uint8_t *) thr->valstack_top); - - /* Write register value into env as named properties. - * If property already exists, overwrites silently. - * Property is writable, but not deletable (not configurable - * in terms of property attributes). - * - * This property write must not throw because we're unwinding - * and unwind code is not allowed to throw at present. The - * call itself has no such guarantees, but we've preallocated - * entries for each property when the env was created, so no - * out-of-memory error should be possible. If this guarantee - * is not provided, problems like GH-476 may happen. - */ - duk_push_tval(thr, - (duk_tval *) (void *) ((duk_uint8_t *) thr->valstack + regbase_byteoff + sizeof(duk_tval) * regnum)); - DUK_DDD(DUK_DDDPRINT("closing identifier %!O -> reg %ld, value %!T", - (duk_heaphdr *) key, - (long) regnum, - (duk_tval *) duk_get_tval(thr, -1))); - duk_hobject_define_property_internal(thr, env, key, DUK_PROPDESC_FLAGS_WE); - } - - /* NULL atomically to avoid inconsistent state + side effects. */ - DUK_HOBJECT_DECREF_NORZ(thr, ((duk_hdecenv *) env)->thread); - DUK_HOBJECT_DECREF_NORZ(thr, ((duk_hdecenv *) env)->varmap); - ((duk_hdecenv *) env)->thread = NULL; - ((duk_hdecenv *) env)->varmap = NULL; - - DUK_DDD(DUK_DDDPRINT("env after closing: %!O", (duk_heaphdr *) env)); -} - -/* - * GETIDREF: a GetIdentifierReference-like helper. - * - * Provides a parent traversing lookup and a single level lookup - * (for HasBinding). - * - * Instead of returning the value, returns a bunch of values allowing - * the caller to read, write, or delete the binding. Value pointers - * are duk_tval pointers which can be mutated directly as long as - * refcounts are properly updated. Note that any operation which may - * reallocate valstacks or compact objects may invalidate the returned - * duk_tval (but not object) pointers, so caller must be very careful. - * - * If starting environment record 'env' is given, 'act' is ignored. - * However, if 'env' is NULL, the caller may identify, in 'act', an - * activation which hasn't had its declarative environment initialized - * yet. The activation registers are then looked up, and its parent - * traversed normally. - * - * The 'out' structure values are only valid if the function returns - * success (non-zero). - */ - -/* lookup name from an open declarative record's registers */ -DUK_LOCAL -duk_bool_t duk__getid_open_decl_env_regs(duk_hthread *thr, duk_hstring *name, duk_hdecenv *env, duk__id_lookup_result *out) { - duk_tval *tv; - duk_size_t reg_rel; - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(name != NULL); - DUK_ASSERT(env != NULL); - DUK_ASSERT(out != NULL); - - DUK_ASSERT(DUK_HOBJECT_IS_DECENV((duk_hobject *) env)); - DUK_HDECENV_ASSERT_VALID(env); - - if (env->thread == NULL) { - /* already closed */ - return 0; - } - DUK_ASSERT(env->varmap != NULL); - - tv = duk_hobject_find_entry_tval_ptr(thr->heap, env->varmap, name); - if (DUK_UNLIKELY(tv == NULL)) { - return 0; - } - - DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv)); - DUK_ASSERT(DUK_TVAL_GET_NUMBER(tv) <= (duk_double_t) DUK_UINT32_MAX); /* limits */ -#if defined(DUK_USE_FASTINT) - DUK_ASSERT(DUK_TVAL_IS_FASTINT(tv)); - reg_rel = (duk_size_t) DUK_TVAL_GET_FASTINT_U32(tv); -#else - reg_rel = (duk_size_t) DUK_TVAL_GET_NUMBER(tv); -#endif - DUK_ASSERT_DISABLE(reg_rel >= 0); /* unsigned */ - - tv = (duk_tval *) (void *) ((duk_uint8_t *) env->thread->valstack + env->regbase_byteoff + sizeof(duk_tval) * reg_rel); - DUK_ASSERT(tv >= env->thread->valstack && tv < env->thread->valstack_end); /* XXX: more accurate? */ - - out->value = tv; - out->attrs = DUK_PROPDESC_FLAGS_W; /* registers are mutable, non-deletable */ - out->env = (duk_hobject *) env; - out->holder = NULL; - out->has_this = 0; - return 1; -} - -/* lookup name from current activation record's functions' registers */ -DUK_LOCAL -duk_bool_t duk__getid_activation_regs(duk_hthread *thr, duk_hstring *name, duk_activation *act, duk__id_lookup_result *out) { - duk_tval *tv; - duk_hobject *func; - duk_hobject *varmap; - duk_size_t reg_rel; - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(name != NULL); - DUK_ASSERT(act != NULL); - DUK_ASSERT(out != NULL); - - func = DUK_ACT_GET_FUNC(act); - DUK_ASSERT(func != NULL); - DUK_ASSERT(DUK_HOBJECT_HAS_NEWENV(func)); - - if (!DUK_HOBJECT_IS_COMPFUNC(func)) { - return 0; - } - - /* XXX: move varmap to duk_hcompfunc struct field? */ - varmap = duk_hobject_get_varmap(thr, func); - if (!varmap) { - return 0; - } - - tv = duk_hobject_find_entry_tval_ptr(thr->heap, varmap, name); - if (!tv) { - return 0; - } - DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv)); - reg_rel = (duk_size_t) DUK_TVAL_GET_NUMBER(tv); - DUK_ASSERT_DISABLE(reg_rel >= 0); - DUK_ASSERT(reg_rel < ((duk_hcompfunc *) func)->nregs); - - tv = (duk_tval *) (void *) ((duk_uint8_t *) thr->valstack + act->bottom_byteoff); - tv += reg_rel; - - out->value = tv; - out->attrs = DUK_PROPDESC_FLAGS_W; /* registers are mutable, non-deletable */ - out->env = NULL; - out->holder = NULL; - out->has_this = 0; - return 1; -} - -DUK_LOCAL -duk_bool_t duk__get_identifier_reference(duk_hthread *thr, - duk_hobject *env, - duk_hstring *name, - duk_activation *act, - duk_bool_t parents, - duk__id_lookup_result *out) { - duk_tval *tv; - duk_uint_t sanity; - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(env != NULL || act != NULL); - DUK_ASSERT(name != NULL); - DUK_ASSERT(out != NULL); - - DUK_ASSERT(!env || DUK_HOBJECT_IS_ENV(env)); - DUK_ASSERT(!env || !DUK_HOBJECT_HAS_ARRAY_PART(env)); - - /* - * Conceptually, we look for the identifier binding by starting from - * 'env' and following to chain of environment records (represented - * by the prototype chain). - * - * If 'env' is NULL, the current activation does not yet have an - * allocated declarative environment record; this should be treated - * exactly as if the environment record existed but had no bindings - * other than register bindings. - * - * Note: we assume that with the DUK_HOBJECT_FLAG_NEWENV cleared - * the environment will always be initialized immediately; hence - * a NULL 'env' should only happen with the flag set. This is the - * case for: (1) function calls, and (2) strict, direct eval calls. - */ - - if (env == NULL && act != NULL) { - duk_hobject *func; - duk_hcompfunc *f; - - DUK_DDD(DUK_DDDPRINT("duk__get_identifier_reference: env is NULL, activation is non-NULL -> " - "delayed env case, look up activation regs first")); - - /* - * Try registers - */ - - if (duk__getid_activation_regs(thr, name, act, out)) { - DUK_DDD(DUK_DDDPRINT("duk__get_identifier_reference successful: " - "name=%!O -> value=%!T, attrs=%ld, has_this=%ld, env=%!O, holder=%!O " - "(found from register bindings when env=NULL)", - (duk_heaphdr *) name, - (duk_tval *) out->value, - (long) out->attrs, - (long) out->has_this, - (duk_heaphdr *) out->env, - (duk_heaphdr *) out->holder)); - return 1; - } - - DUK_DDD(DUK_DDDPRINT("not found in current activation regs")); - - /* - * Not found in registers, proceed to the parent record. - * Here we need to determine what the parent would be, - * if 'env' was not NULL (i.e. same logic as when initializing - * the record). - * - * Note that environment initialization is only deferred when - * DUK_HOBJECT_HAS_NEWENV is set, and this only happens for: - * - Function code - * - Strict eval code - * - * We only need to check _Lexenv here; _Varenv exists only if it - * differs from _Lexenv (and thus _Lexenv will also be present). - */ - - if (!parents) { - DUK_DDD(DUK_DDDPRINT("duk__get_identifier_reference failed, no parent traversal " - "(not found from register bindings when env=NULL)")); - goto fail_not_found; - } - - func = DUK_ACT_GET_FUNC(act); - DUK_ASSERT(func != NULL); - DUK_ASSERT(DUK_HOBJECT_HAS_NEWENV(func)); - f = (duk_hcompfunc *) func; - - env = DUK_HCOMPFUNC_GET_LEXENV(thr->heap, f); - if (!env) { - env = thr->builtins[DUK_BIDX_GLOBAL_ENV]; - } - - DUK_DDD(DUK_DDDPRINT("continue lookup from env: %!iO", (duk_heaphdr *) env)); - } - - /* - * Prototype walking starting from 'env'. - * - * ('act' is not needed anywhere here.) - */ - - sanity = DUK_HOBJECT_PROTOTYPE_CHAIN_SANITY; - while (env != NULL) { - duk_small_uint_t cl; - duk_uint_t attrs; - - DUK_DDD(DUK_DDDPRINT("duk__get_identifier_reference, name=%!O, considering env=%p -> %!iO", - (duk_heaphdr *) name, - (void *) env, - (duk_heaphdr *) env)); - - DUK_ASSERT(env != NULL); - DUK_ASSERT(DUK_HOBJECT_IS_ENV(env)); - DUK_ASSERT(!DUK_HOBJECT_HAS_ARRAY_PART(env)); - - cl = DUK_HOBJECT_GET_CLASS_NUMBER(env); - DUK_ASSERT(cl == DUK_HOBJECT_CLASS_OBJENV || cl == DUK_HOBJECT_CLASS_DECENV); - if (cl == DUK_HOBJECT_CLASS_DECENV) { - /* - * Declarative environment record. - * - * Identifiers can never be stored in ancestors and are - * always plain values, so we can use an internal helper - * and access the value directly with an duk_tval ptr. - * - * A closed environment is only indicated by it missing - * the "book-keeping" properties required for accessing - * register-bound variables. - */ - - DUK_HDECENV_ASSERT_VALID((duk_hdecenv *) env); - if (duk__getid_open_decl_env_regs(thr, name, (duk_hdecenv *) env, out)) { - DUK_DDD(DUK_DDDPRINT("duk__get_identifier_reference successful: " - "name=%!O -> value=%!T, attrs=%ld, has_this=%ld, env=%!O, holder=%!O " - "(declarative environment record, scope open, found in regs)", - (duk_heaphdr *) name, - (duk_tval *) out->value, - (long) out->attrs, - (long) out->has_this, - (duk_heaphdr *) out->env, - (duk_heaphdr *) out->holder)); - return 1; - } - - tv = duk_hobject_find_entry_tval_ptr_and_attrs(thr->heap, env, name, &attrs); - if (tv) { - out->value = tv; - out->attrs = attrs; - out->env = env; - out->holder = env; - out->has_this = 0; - - DUK_DDD(DUK_DDDPRINT("duk__get_identifier_reference successful: " - "name=%!O -> value=%!T, attrs=%ld, has_this=%ld, env=%!O, holder=%!O " - "(declarative environment record, found in properties)", - (duk_heaphdr *) name, - (duk_tval *) out->value, - (long) out->attrs, - (long) out->has_this, - (duk_heaphdr *) out->env, - (duk_heaphdr *) out->holder)); - return 1; - } - } else { - /* - * Object environment record. - * - * Binding (target) object is an external, uncontrolled object. - * Identifier may be bound in an ancestor property, and may be - * an accessor. Target can also be a Proxy which we must support - * here. - */ - - /* XXX: we could save space by using _Target OR _This. If _Target, assume - * this binding is undefined. If _This, assumes this binding is _This, and - * target is also _This. One property would then be enough. - */ - - duk_hobject *target; - duk_bool_t found; - - DUK_ASSERT(cl == DUK_HOBJECT_CLASS_OBJENV); - DUK_HOBJENV_ASSERT_VALID((duk_hobjenv *) env); - - target = ((duk_hobjenv *) env)->target; - DUK_ASSERT(target != NULL); - - /* Target may be a Proxy or property may be an accessor, so we must - * use an actual, Proxy-aware hasprop check here. - * - * out->holder is NOT set to the actual duk_hobject where the - * property is found, but rather the object binding target object. - */ - -#if defined(DUK_USE_ES6_PROXY) - if (DUK_UNLIKELY(DUK_HOBJECT_IS_PROXY(target))) { - duk_tval tv_name; - duk_tval tv_target_tmp; - - DUK_ASSERT(name != NULL); - DUK_TVAL_SET_STRING(&tv_name, name); - DUK_TVAL_SET_OBJECT(&tv_target_tmp, target); - - found = duk_hobject_hasprop(thr, &tv_target_tmp, &tv_name); - } else -#endif /* DUK_USE_ES6_PROXY */ - { - /* XXX: duk_hobject_hasprop() would be correct for - * non-Proxy objects too, but it is about ~20-25% - * slower at present so separate code paths for - * Proxy and non-Proxy now. - */ - found = duk_hobject_hasprop_raw(thr, target, name); - } - - if (found) { - out->value = NULL; /* can't get value, may be accessor */ - out->attrs = 0; /* irrelevant when out->value == NULL */ - out->env = env; - out->holder = target; - out->has_this = ((duk_hobjenv *) env)->has_this; - - DUK_DDD(DUK_DDDPRINT("duk__get_identifier_reference successful: " - "name=%!O -> value=%!T, attrs=%ld, has_this=%ld, env=%!O, holder=%!O " - "(object environment record)", - (duk_heaphdr *) name, - (duk_tval *) out->value, - (long) out->attrs, - (long) out->has_this, - (duk_heaphdr *) out->env, - (duk_heaphdr *) out->holder)); - return 1; - } - } - - if (!parents) { - DUK_DDD(DUK_DDDPRINT("duk__get_identifier_reference failed, no parent traversal " - "(not found from first traversed env)")); - goto fail_not_found; - } - - if (DUK_UNLIKELY(sanity-- == 0)) { - DUK_ERROR_RANGE(thr, DUK_STR_PROTOTYPE_CHAIN_LIMIT); - DUK_WO_NORETURN(return 0;); - } - env = DUK_HOBJECT_GET_PROTOTYPE(thr->heap, env); - } - - /* - * Not found (even in global object) - */ - -fail_not_found: - return 0; -} - -/* - * HASVAR: check identifier binding from a given environment record - * without traversing its parents. - * - * This primitive is not exposed to user code as such, but is used - * internally for e.g. declaration binding instantiation. - * - * See E5 Sections: - * 10.2.1.1.1 HasBinding(N) - * 10.2.1.2.1 HasBinding(N) - * - * Note: strictness has no bearing on this check. Hence we don't take - * a 'strict' parameter. - */ - -#if 0 /*unused*/ -DUK_INTERNAL -duk_bool_t duk_js_hasvar_envrec(duk_hthread *thr, - duk_hobject *env, - duk_hstring *name) { - duk__id_lookup_result ref; - duk_bool_t parents; - - DUK_DDD(DUK_DDDPRINT("hasvar: thr=%p, env=%p, name=%!O " - "(env -> %!dO)", - (void *) thr, (void *) env, (duk_heaphdr *) name, - (duk_heaphdr *) env)); - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(env != NULL); - DUK_ASSERT(name != NULL); - - DUK_ASSERT_REFCOUNT_NONZERO_HEAPHDR(env); - DUK_ASSERT_REFCOUNT_NONZERO_HEAPHDR(name); - - DUK_ASSERT(DUK_HOBJECT_IS_ENV(env)); - DUK_ASSERT(!DUK_HOBJECT_HAS_ARRAY_PART(env)); - - /* lookup results is ignored */ - parents = 0; - return duk__get_identifier_reference(thr, env, name, NULL, parents, &ref); -} -#endif - -/* - * GETVAR - * - * See E5 Sections: - * 11.1.2 Identifier Reference - * 10.3.1 Identifier Resolution - * 11.13.1 Simple Assignment [example of where the Reference is GetValue'd] - * 8.7.1 GetValue (V) - * 8.12.1 [[GetOwnProperty]] (P) - * 8.12.2 [[GetProperty]] (P) - * 8.12.3 [[Get]] (P) - * - * If 'throw' is true, always leaves two values on top of stack: [val this]. - * - * If 'throw' is false, returns 0 if identifier cannot be resolved, and the - * stack will be unaffected in this case. If identifier is resolved, returns - * 1 and leaves [val this] on top of stack. - * - * Note: the 'strict' flag of a reference returned by GetIdentifierReference - * is ignored by GetValue. Hence we don't take a 'strict' parameter. - * - * The 'throw' flag is needed for implementing 'typeof' for an unreferenced - * identifier. An unreference identifier in other contexts generates a - * ReferenceError. - */ - -DUK_LOCAL -duk_bool_t duk__getvar_helper(duk_hthread *thr, duk_hobject *env, duk_activation *act, duk_hstring *name, duk_bool_t throw_flag) { - duk__id_lookup_result ref; - duk_tval tv_tmp_obj; - duk_tval tv_tmp_key; - duk_bool_t parents; - - DUK_DDD(DUK_DDDPRINT("getvar: thr=%p, env=%p, act=%p, name=%!O " - "(env -> %!dO)", - (void *) thr, - (void *) env, - (void *) act, - (duk_heaphdr *) name, - (duk_heaphdr *) env)); - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(name != NULL); - /* env and act may be NULL */ - - DUK_STATS_INC(thr->heap, stats_getvar_all); - - DUK_ASSERT_REFCOUNT_NONZERO_HEAPHDR(env); - DUK_ASSERT_REFCOUNT_NONZERO_HEAPHDR(name); - - parents = 1; /* follow parent chain */ - if (duk__get_identifier_reference(thr, env, name, act, parents, &ref)) { - if (ref.value) { - duk_push_tval(thr, ref.value); - duk_push_undefined(thr); - } else { - DUK_ASSERT(ref.holder != NULL); - - /* ref.holder is safe across the getprop call (even - * with side effects) because 'env' is reachable and - * ref.holder is a direct heap pointer. - */ - - DUK_TVAL_SET_OBJECT(&tv_tmp_obj, ref.holder); - DUK_TVAL_SET_STRING(&tv_tmp_key, name); - (void) duk_hobject_getprop(thr, &tv_tmp_obj, &tv_tmp_key); /* [value] */ - - if (ref.has_this) { - duk_push_hobject(thr, ref.holder); - } else { - duk_push_undefined(thr); - } - - /* [value this] */ - } - - return 1; - } else { - if (throw_flag) { - DUK_ERROR_FMT1(thr, - DUK_ERR_REFERENCE_ERROR, - "identifier '%s' undefined", - (const char *) DUK_HSTRING_GET_DATA(name)); - DUK_WO_NORETURN(return 0;); - } - - return 0; - } -} - -DUK_INTERNAL -duk_bool_t duk_js_getvar_envrec(duk_hthread *thr, duk_hobject *env, duk_hstring *name, duk_bool_t throw_flag) { - return duk__getvar_helper(thr, env, NULL, name, throw_flag); -} - -DUK_INTERNAL -duk_bool_t duk_js_getvar_activation(duk_hthread *thr, duk_activation *act, duk_hstring *name, duk_bool_t throw_flag) { - DUK_ASSERT(act != NULL); - return duk__getvar_helper(thr, act->lex_env, act, name, throw_flag); -} - -/* - * PUTVAR - * - * See E5 Sections: - * 11.1.2 Identifier Reference - * 10.3.1 Identifier Resolution - * 11.13.1 Simple Assignment [example of where the Reference is PutValue'd] - * 8.7.2 PutValue (V,W) [see especially step 3.b, undefined -> automatic global in non-strict mode] - * 8.12.4 [[CanPut]] (P) - * 8.12.5 [[Put]] (P) - * - * Note: may invalidate any valstack (or object) duk_tval pointers because - * putting a value may reallocate any object or any valstack. Caller beware. - */ - -DUK_LOCAL -void duk__putvar_helper(duk_hthread *thr, - duk_hobject *env, - duk_activation *act, - duk_hstring *name, - duk_tval *val, - duk_bool_t strict) { - duk__id_lookup_result ref; - duk_tval tv_tmp_val; - duk_tval tv_tmp_obj; - duk_tval tv_tmp_key; - duk_bool_t parents; - - DUK_STATS_INC(thr->heap, stats_putvar_all); - - DUK_DDD(DUK_DDDPRINT("putvar: thr=%p, env=%p, act=%p, name=%!O, val=%p, strict=%ld " - "(env -> %!dO, val -> %!T)", - (void *) thr, - (void *) env, - (void *) act, - (duk_heaphdr *) name, - (void *) val, - (long) strict, - (duk_heaphdr *) env, - (duk_tval *) val)); - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(name != NULL); - DUK_ASSERT(val != NULL); - /* env and act may be NULL */ - - DUK_ASSERT_REFCOUNT_NONZERO_HEAPHDR(env); - DUK_ASSERT_REFCOUNT_NONZERO_HEAPHDR(name); - DUK_ASSERT_REFCOUNT_NONZERO_TVAL(val); - - DUK_TVAL_SET_TVAL(&tv_tmp_val, val); /* Stabilize. */ - val = NULL; - - /* - * In strict mode E5 protects 'eval' and 'arguments' from being - * assigned to (or even declared anywhere). Attempt to do so - * should result in a compile time SyntaxError. See the internal - * design documentation for details. - * - * Thus, we should never come here, run-time, for strict code, - * and name 'eval' or 'arguments'. - */ - - DUK_ASSERT(!strict || (name != DUK_HTHREAD_STRING_EVAL(thr) && name != DUK_HTHREAD_STRING_LC_ARGUMENTS(thr))); - - /* - * Lookup variable and update in-place if found. - */ - - parents = 1; /* follow parent chain */ - - if (duk__get_identifier_reference(thr, env, name, act, parents, &ref)) { - if (ref.value && (ref.attrs & DUK_PROPDESC_FLAG_WRITABLE)) { - /* Update duk_tval in-place if pointer provided and the - * property is writable. If the property is not writable - * (immutable binding), use duk_hobject_putprop() which - * will respect mutability. - */ - duk_tval *tv_val; - - tv_val = ref.value; - DUK_ASSERT(tv_val != NULL); - DUK_TVAL_SET_TVAL_UPDREF(thr, tv_val, &tv_tmp_val); /* side effects */ - - /* ref.value invalidated here */ - } else { - DUK_ASSERT(ref.holder != NULL); - - DUK_TVAL_SET_OBJECT(&tv_tmp_obj, ref.holder); - DUK_TVAL_SET_STRING(&tv_tmp_key, name); - (void) duk_hobject_putprop(thr, &tv_tmp_obj, &tv_tmp_key, &tv_tmp_val, strict); - - /* ref.value invalidated here */ - } - - return; - } - - /* - * Not found: write to global object (non-strict) or ReferenceError - * (strict); see E5 Section 8.7.2, step 3. - */ - - if (strict) { - DUK_DDD(DUK_DDDPRINT("identifier binding not found, strict => reference error")); - DUK_ERROR_FMT1(thr, - DUK_ERR_REFERENCE_ERROR, - "identifier '%s' undefined", - (const char *) DUK_HSTRING_GET_DATA(name)); - DUK_WO_NORETURN(return;); - } - - DUK_DDD(DUK_DDDPRINT("identifier binding not found, not strict => set to global")); - - DUK_TVAL_SET_OBJECT(&tv_tmp_obj, thr->builtins[DUK_BIDX_GLOBAL]); - DUK_TVAL_SET_STRING(&tv_tmp_key, name); - (void) duk_hobject_putprop(thr, &tv_tmp_obj, &tv_tmp_key, &tv_tmp_val, 0); /* 0 = no throw */ - - /* NB: 'val' may be invalidated here because put_value may realloc valstack, - * caller beware. - */ -} - -DUK_INTERNAL -void duk_js_putvar_envrec(duk_hthread *thr, duk_hobject *env, duk_hstring *name, duk_tval *val, duk_bool_t strict) { - duk__putvar_helper(thr, env, NULL, name, val, strict); -} - -DUK_INTERNAL -void duk_js_putvar_activation(duk_hthread *thr, duk_activation *act, duk_hstring *name, duk_tval *val, duk_bool_t strict) { - DUK_ASSERT(act != NULL); - duk__putvar_helper(thr, act->lex_env, act, name, val, strict); -} - -/* - * DELVAR - * - * See E5 Sections: - * 11.4.1 The delete operator - * 10.2.1.1.5 DeleteBinding (N) [declarative environment record] - * 10.2.1.2.5 DeleteBinding (N) [object environment record] - * - * Variable bindings established inside eval() are deletable (configurable), - * other bindings are not, including variables declared in global level. - * Registers are always non-deletable, and the deletion of other bindings - * is controlled by the configurable flag. - * - * For strict mode code, the 'delete' operator should fail with a compile - * time SyntaxError if applied to identifiers. Hence, no strict mode - * run-time deletion of identifiers should ever happen. This function - * should never be called from strict mode code! - */ - -DUK_LOCAL -duk_bool_t duk__delvar_helper(duk_hthread *thr, duk_hobject *env, duk_activation *act, duk_hstring *name) { - duk__id_lookup_result ref; - duk_bool_t parents; - - DUK_DDD(DUK_DDDPRINT("delvar: thr=%p, env=%p, act=%p, name=%!O " - "(env -> %!dO)", - (void *) thr, - (void *) env, - (void *) act, - (duk_heaphdr *) name, - (duk_heaphdr *) env)); - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(name != NULL); - /* env and act may be NULL */ - - DUK_ASSERT_REFCOUNT_NONZERO_HEAPHDR(name); - - parents = 1; /* follow parent chain */ - - if (duk__get_identifier_reference(thr, env, name, act, parents, &ref)) { - if (ref.value && !(ref.attrs & DUK_PROPDESC_FLAG_CONFIGURABLE)) { - /* Identifier found in registers (always non-deletable) - * or declarative environment record and non-configurable. - */ - return 0; - } - DUK_ASSERT(ref.holder != NULL); - - return duk_hobject_delprop_raw(thr, ref.holder, name, 0); - } - - /* - * Not found (even in global object). - * - * In non-strict mode this is a silent SUCCESS (!), see E5 Section 11.4.1, - * step 3.b. In strict mode this case is a compile time SyntaxError so - * we should not come here. - */ - - DUK_DDD(DUK_DDDPRINT("identifier to be deleted not found: name=%!O " - "(treated as silent success)", - (duk_heaphdr *) name)); - return 1; -} - -#if 0 /*unused*/ -DUK_INTERNAL -duk_bool_t duk_js_delvar_envrec(duk_hthread *thr, - duk_hobject *env, - duk_hstring *name) { - return duk__delvar_helper(thr, env, NULL, name); -} -#endif - -DUK_INTERNAL -duk_bool_t duk_js_delvar_activation(duk_hthread *thr, duk_activation *act, duk_hstring *name) { - DUK_ASSERT(act != NULL); - return duk__delvar_helper(thr, act->lex_env, act, name); -} - -/* - * DECLVAR - * - * See E5 Sections: - * 10.4.3 Entering Function Code - * 10.5 Declaration Binding Instantion - * 12.2 Variable Statement - * 11.1.2 Identifier Reference - * 10.3.1 Identifier Resolution - * - * Variable declaration behavior is mainly discussed in Section 10.5, - * and is not discussed in the execution semantics (Sections 11-13). - * - * Conceptually declarations happen when code (global, eval, function) - * is entered, before any user code is executed. In practice, register- - * bound identifiers are 'declared' automatically (by virtue of being - * allocated to registers with the initial value 'undefined'). Other - * identifiers are declared in the function prologue with this primitive. - * - * Since non-register bindings eventually back to an internal object's - * properties, the 'prop_flags' argument is used to specify binding - * type: - * - * - Immutable binding: set DUK_PROPDESC_FLAG_WRITABLE to false - * - Non-deletable binding: set DUK_PROPDESC_FLAG_CONFIGURABLE to false - * - The flag DUK_PROPDESC_FLAG_ENUMERABLE should be set, although it - * doesn't really matter for internal objects - * - * All bindings are non-deletable mutable bindings except: - * - * - Declarations in eval code (mutable, deletable) - * - 'arguments' binding in strict function code (immutable) - * - Function name binding of a function expression (immutable) - * - * Declarations may go to declarative environment records (always - * so for functions), but may also go to object environment records - * (e.g. global code). The global object environment has special - * behavior when re-declaring a function (but not a variable); see - * E5.1 specification, Section 10.5, step 5.e. - * - * Declarations always go to the 'top-most' environment record, i.e. - * we never check the record chain. It's not an error even if a - * property (even an immutable or non-deletable one) of the same name - * already exists. - * - * If a declared variable already exists, its value needs to be updated - * (if possible). Returns 1 if a PUTVAR needs to be done by the caller; - * otherwise returns 0. - */ - -DUK_LOCAL -duk_bool_t duk__declvar_helper(duk_hthread *thr, - duk_hobject *env, - duk_hstring *name, - duk_tval *val, - duk_small_uint_t prop_flags, - duk_bool_t is_func_decl) { - duk_hobject *holder; - duk_bool_t parents; - duk__id_lookup_result ref; - duk_tval *tv; - - DUK_DDD(DUK_DDDPRINT("declvar: thr=%p, env=%p, name=%!O, val=%!T, prop_flags=0x%08lx, is_func_decl=%ld " - "(env -> %!iO)", - (void *) thr, - (void *) env, - (duk_heaphdr *) name, - (duk_tval *) val, - (unsigned long) prop_flags, - (unsigned int) is_func_decl, - (duk_heaphdr *) env)); - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(env != NULL); - DUK_ASSERT(name != NULL); - DUK_ASSERT(val != NULL); - - /* Note: in strict mode the compiler should reject explicit - * declaration of 'eval' or 'arguments'. However, internal - * bytecode may declare 'arguments' in the function prologue. - * We don't bother checking (or asserting) for these now. - */ - - /* Note: val is a stable duk_tval pointer. The caller makes - * a value copy into its stack frame, so 'tv_val' is not subject - * to side effects here. - */ - - /* - * Check whether already declared. - * - * We need to check whether the binding exists in the environment - * without walking its parents. However, we still need to check - * register-bound identifiers and the prototype chain of an object - * environment target object. - */ - - parents = 0; /* just check 'env' */ - if (duk__get_identifier_reference(thr, env, name, NULL, parents, &ref)) { - duk_int_t e_idx; - duk_int_t h_idx; - duk_small_uint_t flags; - - /* - * Variable already declared, ignore re-declaration. - * The only exception is the updated behavior of E5.1 for - * global function declarations, E5.1 Section 10.5, step 5.e. - * This behavior does not apply to global variable declarations. - */ - - if (!(is_func_decl && env == thr->builtins[DUK_BIDX_GLOBAL_ENV])) { - DUK_DDD(DUK_DDDPRINT("re-declare a binding, ignoring")); - return 1; /* 1 -> needs a PUTVAR */ - } - - /* - * Special behavior in E5.1. - * - * Note that even though parents == 0, the conflicting property - * may be an inherited property (currently our global object's - * prototype is Object.prototype). Step 5.e first operates on - * the existing property (which is potentially in an ancestor) - * and then defines a new property in the global object (and - * never modifies the ancestor). - * - * Also note that this logic would become even more complicated - * if the conflicting property might be a virtual one. Object - * prototype has no virtual properties, though. - * - * XXX: this is now very awkward, rework. - */ - - DUK_DDD(DUK_DDDPRINT("re-declare a function binding in global object, " - "updated E5.1 processing")); - - DUK_ASSERT(ref.holder != NULL); - holder = ref.holder; - - /* holder will be set to the target object, not the actual object - * where the property was found (see duk__get_identifier_reference()). - */ - DUK_ASSERT(DUK_HOBJECT_GET_CLASS_NUMBER(holder) == DUK_HOBJECT_CLASS_GLOBAL); - DUK_ASSERT(!DUK_HOBJECT_HAS_EXOTIC_ARRAY(holder)); /* global object doesn't have array part */ - - /* XXX: use a helper for prototype traversal; no loop check here */ - /* must be found: was found earlier, and cannot be inherited */ - for (;;) { - DUK_ASSERT(holder != NULL); - if (duk_hobject_find_entry(thr->heap, holder, name, &e_idx, &h_idx)) { - DUK_ASSERT(e_idx >= 0); - break; - } - /* SCANBUILD: NULL pointer dereference, doesn't actually trigger, - * asserted above. - */ - holder = DUK_HOBJECT_GET_PROTOTYPE(thr->heap, holder); - } - DUK_ASSERT(holder != NULL); - DUK_ASSERT(e_idx >= 0); - /* SCANBUILD: scan-build produces a NULL pointer dereference warning - * below; it never actually triggers because holder is actually never - * NULL. - */ - - /* ref.holder is global object, holder is the object with the - * conflicting property. - */ - - flags = DUK_HOBJECT_E_GET_FLAGS(thr->heap, holder, e_idx); - if (!(flags & DUK_PROPDESC_FLAG_CONFIGURABLE)) { - if (flags & DUK_PROPDESC_FLAG_ACCESSOR) { - DUK_DDD(DUK_DDDPRINT("existing property is a non-configurable " - "accessor -> reject")); - goto fail_existing_attributes; - } - if (!((flags & DUK_PROPDESC_FLAG_WRITABLE) && (flags & DUK_PROPDESC_FLAG_ENUMERABLE))) { - DUK_DDD(DUK_DDDPRINT("existing property is a non-configurable " - "plain property which is not writable and " - "enumerable -> reject")); - goto fail_existing_attributes; - } - - DUK_DDD(DUK_DDDPRINT("existing property is not configurable but " - "is plain, enumerable, and writable -> " - "allow redeclaration")); - } - - if (holder == ref.holder) { - /* XXX: if duk_hobject_define_property_internal() was updated - * to handle a pre-existing accessor property, this would be - * a simple call (like for the ancestor case). - */ - DUK_DDD(DUK_DDDPRINT("redefine, offending property in global object itself")); - - if (flags & DUK_PROPDESC_FLAG_ACCESSOR) { - duk_hobject *tmp; - - tmp = DUK_HOBJECT_E_GET_VALUE_GETTER(thr->heap, holder, e_idx); - DUK_HOBJECT_E_SET_VALUE_GETTER(thr->heap, holder, e_idx, NULL); - DUK_HOBJECT_DECREF_ALLOWNULL(thr, tmp); - DUK_UNREF(tmp); - tmp = DUK_HOBJECT_E_GET_VALUE_SETTER(thr->heap, holder, e_idx); - DUK_HOBJECT_E_SET_VALUE_SETTER(thr->heap, holder, e_idx, NULL); - DUK_HOBJECT_DECREF_ALLOWNULL(thr, tmp); - DUK_UNREF(tmp); - } else { - tv = DUK_HOBJECT_E_GET_VALUE_TVAL_PTR(thr->heap, holder, e_idx); - DUK_TVAL_SET_UNDEFINED_UPDREF(thr, tv); - } - - /* Here val would be potentially invalid if we didn't make - * a value copy at the caller. - */ - - tv = DUK_HOBJECT_E_GET_VALUE_TVAL_PTR(thr->heap, holder, e_idx); - DUK_TVAL_SET_TVAL(tv, val); - DUK_TVAL_INCREF(thr, tv); - DUK_HOBJECT_E_SET_FLAGS(thr->heap, holder, e_idx, prop_flags); - - DUK_DDD(DUK_DDDPRINT("updated global binding, final result: " - "value -> %!T, prop_flags=0x%08lx", - (duk_tval *) DUK_HOBJECT_E_GET_VALUE_TVAL_PTR(thr->heap, holder, e_idx), - (unsigned long) prop_flags)); - } else { - DUK_DDD(DUK_DDDPRINT("redefine, offending property in ancestor")); - - DUK_ASSERT(ref.holder == thr->builtins[DUK_BIDX_GLOBAL]); - duk_push_tval(thr, val); - duk_hobject_define_property_internal(thr, ref.holder, name, prop_flags); - } - - return 0; - } - - /* - * Not found (in registers or record objects). Declare - * to current variable environment. - */ - - /* - * Get holder object - */ - - if (DUK_HOBJECT_IS_DECENV(env)) { - DUK_HDECENV_ASSERT_VALID((duk_hdecenv *) env); - holder = env; - } else { - DUK_HOBJENV_ASSERT_VALID((duk_hobjenv *) env); - holder = ((duk_hobjenv *) env)->target; - DUK_ASSERT(holder != NULL); - } - - /* - * Define new property - * - * Note: this may fail if the holder is not extensible. - */ - - /* XXX: this is awkward as we use an internal method which doesn't handle - * extensibility etc correctly. Basically we'd want to do a [[DefineOwnProperty]] - * or Object.defineProperty() here. - */ - - if (!DUK_HOBJECT_HAS_EXTENSIBLE(holder)) { - goto fail_not_extensible; - } - - duk_push_hobject(thr, holder); - duk_push_hstring(thr, name); - duk_push_tval(thr, val); - duk_xdef_prop(thr, -3, prop_flags); /* [holder name val] -> [holder] */ - duk_pop_unsafe(thr); - - return 0; - -fail_existing_attributes: -fail_not_extensible: - DUK_ERROR_TYPE(thr, "declaration failed"); - DUK_WO_NORETURN(return 0;); -} - -DUK_INTERNAL -duk_bool_t duk_js_declvar_activation(duk_hthread *thr, - duk_activation *act, - duk_hstring *name, - duk_tval *val, - duk_small_uint_t prop_flags, - duk_bool_t is_func_decl) { - duk_hobject *env; - duk_tval tv_val_copy; - - DUK_ASSERT(act != NULL); - - /* - * Make a value copy of the input val. This ensures that - * side effects cannot invalidate the pointer. - */ - - DUK_TVAL_SET_TVAL(&tv_val_copy, val); - val = &tv_val_copy; - - /* - * Delayed env creation check - */ - - if (!act->var_env) { - DUK_ASSERT(act->lex_env == NULL); - duk_js_init_activation_environment_records_delayed(thr, act); - /* 'act' is a stable pointer, so still OK. */ - } - DUK_ASSERT(act->lex_env != NULL); - DUK_ASSERT(act->var_env != NULL); - - env = act->var_env; - DUK_ASSERT(env != NULL); - DUK_ASSERT(DUK_HOBJECT_IS_ENV(env)); - - return duk__declvar_helper(thr, env, name, val, prop_flags, is_func_decl); -} -#line 1 "duk_lexer.c" -/* - * Lexer for source files, ToNumber() string conversions, RegExp expressions, - * and JSON. - * - * Provides a stream of ECMAScript tokens from an UTF-8/CESU-8 buffer. The - * caller can also rewind the token stream into a certain position which is - * needed by the compiler part for multi-pass scanning. Tokens are - * represented as duk_token structures, and contain line number information. - * Token types are identified with DUK_TOK_* defines. - * - * Characters are decoded into a fixed size lookup window consisting of - * decoded Unicode code points, with window positions past the end of the - * input filled with an invalid codepoint (-1). The tokenizer can thus - * perform multiple character lookups efficiently and with few sanity - * checks (such as access outside the end of the input), which keeps the - * tokenization code small at the cost of performance. - * - * Character data in tokens, such as identifier names and string literals, - * is encoded into CESU-8 format on-the-fly while parsing the token in - * question. The string data is made reachable to garbage collection by - * placing the token-related values in value stack entries allocated for - * this purpose by the caller. The characters exist in Unicode code point - * form only in the fixed size lookup window, which keeps character data - * expansion (of especially ASCII data) low. - * - * Token parsing supports the full range of Unicode characters as described - * in the E5 specification. Parsing has been optimized for ASCII characters - * because ordinary ECMAScript code consists almost entirely of ASCII - * characters. Matching of complex Unicode codepoint sets (such as in the - * IdentifierStart and IdentifierPart productions) is optimized for size, - * and is done using a linear scan of a bit-packed list of ranges. This is - * very slow, but should never be entered unless the source code actually - * contains Unicode characters. - * - * ECMAScript tokenization is partially context sensitive. First, - * additional future reserved words are recognized in strict mode (see E5 - * Section 7.6.1.2). Second, a forward slash character ('/') can be - * recognized either as starting a RegExp literal or as a division operator, - * depending on context. The caller must provide necessary context flags - * when requesting a new token. - * - * Future work: - * - * * Make line number tracking optional, as it consumes space. - * - * * Add a feature flag for disabling UTF-8 decoding of input, as most - * source code is ASCII. Because of Unicode escapes written in ASCII, - * this does not allow Unicode support to be removed from e.g. - * duk_unicode_is_identifier_start() nor does it allow removal of CESU-8 - * encoding of e.g. string literals. - * - * * Add a feature flag for disabling Unicode compliance of e.g. identifier - * names. This allows for a build more than a kilobyte smaller, because - * Unicode ranges needed by duk_unicode_is_identifier_start() and - * duk_unicode_is_identifier_part() can be dropped. String literals - * should still be allowed to contain escaped Unicode, so this still does - * not allow removal of CESU-8 encoding of e.g. string literals. - * - * * Character lookup tables for codepoints above BMP could be stripped. - * - * * Strictly speaking, E5 specification requires that source code consists - * of 16-bit code units, and if not, must be conceptually converted to - * that format first. The current lexer processes Unicode code points - * and allows characters outside the BMP. These should be converted to - * surrogate pairs while reading the source characters into the window, - * not after tokens have been formed (as is done now). However, the fix - * is not trivial because two characters are decoded from one codepoint. - * - * * Optimize for speed as well as size. Large if-else ladders are (at - * least potentially) slow. - */ - -/* #include duk_internal.h -> already included */ - -/* - * Various defines and file specific helper macros - */ - -#define DUK__MAX_RE_DECESC_DIGITS 9 -#define DUK__MAX_RE_QUANT_DIGITS 9 /* Does not allow e.g. 2**31-1, but one more would allow overflows of u32. */ - -/* whether to use macros or helper function depends on call count */ -#define DUK__ISDIGIT(x) ((x) >= DUK_ASC_0 && (x) <= DUK_ASC_9) -#define DUK__ISHEXDIGIT(x) duk__is_hex_digit((x)) -#define DUK__ISOCTDIGIT(x) ((x) >= DUK_ASC_0 && (x) <= DUK_ASC_7) -#define DUK__ISDIGIT03(x) ((x) >= DUK_ASC_0 && (x) <= DUK_ASC_3) -#define DUK__ISDIGIT47(x) ((x) >= DUK_ASC_4 && (x) <= DUK_ASC_7) - -/* lexer character window helpers */ -#define DUK__LOOKUP(lex_ctx, idx) ((lex_ctx)->window[(idx)].codepoint) -#define DUK__ADVANCECHARS(lex_ctx, count) duk__advance_chars((lex_ctx), (count)) -#define DUK__ADVANCEBYTES(lex_ctx, count) duk__advance_bytes((lex_ctx), (count)) -#define DUK__INITBUFFER(lex_ctx) duk__initbuffer((lex_ctx)) -#define DUK__APPENDBUFFER(lex_ctx, x) duk__appendbuffer((lex_ctx), (duk_codepoint_t) (x)) -#define DUK__APPENDBUFFER_ASCII(lex_ctx, x) duk__appendbuffer_ascii((lex_ctx), (duk_codepoint_t) (x)) - -/* lookup shorthands (note: assume context variable is named 'lex_ctx') */ -#define DUK__L0() DUK__LOOKUP(lex_ctx, 0) -#define DUK__L1() DUK__LOOKUP(lex_ctx, 1) -#define DUK__L2() DUK__LOOKUP(lex_ctx, 2) -#define DUK__L3() DUK__LOOKUP(lex_ctx, 3) -#define DUK__L4() DUK__LOOKUP(lex_ctx, 4) -#define DUK__L5() DUK__LOOKUP(lex_ctx, 5) - -/* packed advance/token number macro used by multiple functions */ -#define DUK__ADVTOK(advbytes, tok) ((((advbytes) * sizeof(duk_lexer_codepoint)) << 8) + (tok)) - -/* - * Advance lookup window by N characters, filling in new characters as - * necessary. After returning caller is guaranteed a character window of - * at least DUK_LEXER_WINDOW_SIZE characters. - * - * The main function duk__advance_bytes() is called at least once per every - * token so it has a major lexer/compiler performance impact. There are two - * variants for the main duk__advance_bytes() algorithm: a sliding window - * approach which is slightly faster at the cost of larger code footprint, - * and a simple copying one. - * - * Decoding directly from the source string would be another lexing option. - * But the lookup window based approach has the advantage of hiding the - * source string and its encoding effectively which gives more flexibility - * going forward to e.g. support chunked streaming of source from flash. - * - * Decodes UTF-8/CESU-8 leniently with support for code points from U+0000 to - * U+10FFFF, causing an error if the input is unparseable. Leniency means: - * - * * Unicode code point validation is intentionally not performed, - * except to check that the codepoint does not exceed 0x10ffff. - * - * * In particular, surrogate pairs are allowed and not combined, which - * allows source files to represent all SourceCharacters with CESU-8. - * Broken surrogate pairs are allowed, as ECMAScript does not mandate - * their validation. - * - * * Allow non-shortest UTF-8 encodings. - * - * Leniency here causes few security concerns because all character data is - * decoded into Unicode codepoints before lexer processing, and is then - * re-encoded into CESU-8. The source can be parsed as strict UTF-8 with - * a compiler option. However, ECMAScript source characters include -all- - * 16-bit unsigned integer codepoints, so leniency seems to be appropriate. - * - * Note that codepoints above the BMP are not strictly SourceCharacters, - * but the lexer still accepts them as such. Before ending up in a string - * or an identifier name, codepoints above BMP are converted into surrogate - * pairs and then CESU-8 encoded, resulting in 16-bit Unicode data as - * expected by ECMAScript. - * - * An alternative approach to dealing with invalid or partial sequences - * would be to skip them and replace them with e.g. the Unicode replacement - * character U+FFFD. This has limited utility because a replacement character - * will most likely cause a parse error, unless it occurs inside a string. - * Further, ECMAScript source is typically pure ASCII. - * - * See: - * - * http://en.wikipedia.org/wiki/UTF-8 - * http://en.wikipedia.org/wiki/CESU-8 - * http://tools.ietf.org/html/rfc3629 - * http://en.wikipedia.org/wiki/UTF-8#Invalid_byte_sequences - * - * Future work: - * - * * Reject other invalid Unicode sequences (see Wikipedia entry for examples) - * in strict UTF-8 mode. - * - * * Size optimize. An attempt to use a 16-byte lookup table for the first - * byte resulted in a code increase though. - * - * * Is checking against maximum 0x10ffff really useful? 4-byte encoding - * imposes a certain limit anyway. - * - * * Support chunked streaming of source code. Can be implemented either - * by streaming chunks of bytes or chunks of codepoints. - */ - -#if defined(DUK_USE_LEXER_SLIDING_WINDOW) -DUK_LOCAL void duk__fill_lexer_buffer(duk_lexer_ctx *lex_ctx, duk_small_uint_t start_offset_bytes) { - duk_lexer_codepoint *cp, *cp_end; - duk_ucodepoint_t x; - duk_small_uint_t contlen; - const duk_uint8_t *p, *p_end; -#if defined(DUK_USE_STRICT_UTF8_SOURCE) - duk_ucodepoint_t mincp; -#endif - duk_int_t input_line; - - /* Use temporaries and update lex_ctx only when finished. */ - input_line = lex_ctx->input_line; - p = lex_ctx->input + lex_ctx->input_offset; - p_end = lex_ctx->input + lex_ctx->input_length; - - cp = (duk_lexer_codepoint *) (void *) ((duk_uint8_t *) lex_ctx->buffer + start_offset_bytes); - cp_end = lex_ctx->buffer + DUK_LEXER_BUFFER_SIZE; - - for (; cp != cp_end; cp++) { - cp->offset = (duk_size_t) (p - lex_ctx->input); - cp->line = input_line; - - /* XXX: potential issue with signed pointers, p_end < p. */ - if (DUK_UNLIKELY(p >= p_end)) { - /* If input_offset were assigned a negative value, it would - * result in a large positive value. Most likely it would be - * larger than input_length and be caught here. In any case - * no memory unsafe behavior would happen. - */ - cp->codepoint = -1; - continue; - } - - x = (duk_ucodepoint_t) (*p++); - - /* Fast path. */ - - if (DUK_LIKELY(x < 0x80UL)) { - DUK_ASSERT(x != 0x2028UL && x != 0x2029UL); /* not LS/PS */ - if (DUK_UNLIKELY(x <= 0x000dUL)) { - if ((x == 0x000aUL) || ((x == 0x000dUL) && (p >= p_end || *p != 0x000aUL))) { - /* lookup for 0x000a above assumes shortest encoding now */ - - /* E5 Section 7.3, treat the following as newlines: - * LF - * CR [not followed by LF] - * LS - * PS - * - * For CR LF, CR is ignored if it is followed by LF, and the LF will bump - * the line number. - */ - input_line++; - } - } - - cp->codepoint = (duk_codepoint_t) x; - continue; - } - - /* Slow path. */ - - if (x < 0xc0UL) { - /* 10xx xxxx -> invalid */ - goto error_encoding; - } else if (x < 0xe0UL) { - /* 110x xxxx 10xx xxxx */ - contlen = 1; -#if defined(DUK_USE_STRICT_UTF8_SOURCE) - mincp = 0x80UL; -#endif - x = x & 0x1fUL; - } else if (x < 0xf0UL) { - /* 1110 xxxx 10xx xxxx 10xx xxxx */ - contlen = 2; -#if defined(DUK_USE_STRICT_UTF8_SOURCE) - mincp = 0x800UL; -#endif - x = x & 0x0fUL; - } else if (x < 0xf8UL) { - /* 1111 0xxx 10xx xxxx 10xx xxxx 10xx xxxx */ - contlen = 3; -#if defined(DUK_USE_STRICT_UTF8_SOURCE) - mincp = 0x10000UL; -#endif - x = x & 0x07UL; - } else { - /* no point in supporting encodings of 5 or more bytes */ - goto error_encoding; - } - - DUK_ASSERT(p_end >= p); - if ((duk_size_t) contlen > (duk_size_t) (p_end - p)) { - goto error_clipped; - } - - while (contlen > 0) { - duk_small_uint_t y; - y = *p++; - if ((y & 0xc0U) != 0x80U) { - /* check that byte has the form 10xx xxxx */ - goto error_encoding; - } - x = x << 6; - x += y & 0x3fUL; - contlen--; - } - - /* check final character validity */ - - if (x > 0x10ffffUL) { - goto error_encoding; - } -#if defined(DUK_USE_STRICT_UTF8_SOURCE) - if (x < mincp || (x >= 0xd800UL && x <= 0xdfffUL) || x == 0xfffeUL) { - goto error_encoding; - } -#endif - - DUK_ASSERT(x != 0x000aUL && x != 0x000dUL); - if ((x == 0x2028UL) || (x == 0x2029UL)) { - input_line++; - } - - cp->codepoint = (duk_codepoint_t) x; - } - - lex_ctx->input_offset = (duk_size_t) (p - lex_ctx->input); - lex_ctx->input_line = input_line; - return; - -error_clipped: /* clipped codepoint */ -error_encoding: /* invalid codepoint encoding or codepoint */ - lex_ctx->input_offset = (duk_size_t) (p - lex_ctx->input); - lex_ctx->input_line = input_line; - - DUK_ERROR_SYNTAX(lex_ctx->thr, DUK_STR_SOURCE_DECODE_FAILED); - DUK_WO_NORETURN(return;); -} - -DUK_LOCAL void duk__advance_bytes(duk_lexer_ctx *lex_ctx, duk_small_uint_t count_bytes) { - duk_small_uint_t used_bytes, avail_bytes; - - DUK_ASSERT_DISABLE(count_bytes >= 0); /* unsigned */ - DUK_ASSERT(count_bytes <= (duk_small_uint_t) (DUK_LEXER_WINDOW_SIZE * sizeof(duk_lexer_codepoint))); - DUK_ASSERT(lex_ctx->window >= lex_ctx->buffer); - DUK_ASSERT(lex_ctx->window < lex_ctx->buffer + DUK_LEXER_BUFFER_SIZE); - DUK_ASSERT((duk_uint8_t *) lex_ctx->window + count_bytes <= - (duk_uint8_t *) lex_ctx->buffer + DUK_LEXER_BUFFER_SIZE * sizeof(duk_lexer_codepoint)); - - /* Zero 'count' is also allowed to make call sites easier. - * Arithmetic in bytes generates better code in GCC. - */ - - lex_ctx->window = (duk_lexer_codepoint *) (void *) ((duk_uint8_t *) lex_ctx->window + count_bytes); /* avoid multiply */ - used_bytes = (duk_small_uint_t) ((duk_uint8_t *) lex_ctx->window - (duk_uint8_t *) lex_ctx->buffer); - avail_bytes = DUK_LEXER_BUFFER_SIZE * sizeof(duk_lexer_codepoint) - used_bytes; - if (avail_bytes < (duk_small_uint_t) (DUK_LEXER_WINDOW_SIZE * sizeof(duk_lexer_codepoint))) { - /* Not enough data to provide a full window, so "scroll" window to - * start of buffer and fill up the rest. - */ - duk_memmove((void *) lex_ctx->buffer, (const void *) lex_ctx->window, (size_t) avail_bytes); - lex_ctx->window = lex_ctx->buffer; - duk__fill_lexer_buffer(lex_ctx, avail_bytes); - } -} - -DUK_LOCAL void duk__init_lexer_window(duk_lexer_ctx *lex_ctx) { - lex_ctx->window = lex_ctx->buffer; - duk__fill_lexer_buffer(lex_ctx, 0); -} -#else /* DUK_USE_LEXER_SLIDING_WINDOW */ -DUK_LOCAL duk_codepoint_t duk__read_char(duk_lexer_ctx *lex_ctx) { - duk_ucodepoint_t x; - duk_small_uint_t len; - duk_small_uint_t i; - const duk_uint8_t *p; -#if defined(DUK_USE_STRICT_UTF8_SOURCE) - duk_ucodepoint_t mincp; -#endif - duk_size_t input_offset; - - input_offset = lex_ctx->input_offset; - if (DUK_UNLIKELY(input_offset >= lex_ctx->input_length)) { - /* If input_offset were assigned a negative value, it would - * result in a large positive value. Most likely it would be - * larger than input_length and be caught here. In any case - * no memory unsafe behavior would happen. - */ - return -1; - } - - p = lex_ctx->input + input_offset; - x = (duk_ucodepoint_t) (*p); - - if (DUK_LIKELY(x < 0x80UL)) { - /* 0xxx xxxx -> fast path */ - - /* input offset tracking */ - lex_ctx->input_offset++; - - DUK_ASSERT(x != 0x2028UL && x != 0x2029UL); /* not LS/PS */ - if (DUK_UNLIKELY(x <= 0x000dUL)) { - if ((x == 0x000aUL) || ((x == 0x000dUL) && (lex_ctx->input_offset >= lex_ctx->input_length || - lex_ctx->input[lex_ctx->input_offset] != 0x000aUL))) { - /* lookup for 0x000a above assumes shortest encoding now */ - - /* E5 Section 7.3, treat the following as newlines: - * LF - * CR [not followed by LF] - * LS - * PS - * - * For CR LF, CR is ignored if it is followed by LF, and the LF will bump - * the line number. - */ - lex_ctx->input_line++; - } - } - - return (duk_codepoint_t) x; - } - - /* Slow path. */ - - if (x < 0xc0UL) { - /* 10xx xxxx -> invalid */ - goto error_encoding; - } else if (x < 0xe0UL) { - /* 110x xxxx 10xx xxxx */ - len = 2; -#if defined(DUK_USE_STRICT_UTF8_SOURCE) - mincp = 0x80UL; -#endif - x = x & 0x1fUL; - } else if (x < 0xf0UL) { - /* 1110 xxxx 10xx xxxx 10xx xxxx */ - len = 3; -#if defined(DUK_USE_STRICT_UTF8_SOURCE) - mincp = 0x800UL; -#endif - x = x & 0x0fUL; - } else if (x < 0xf8UL) { - /* 1111 0xxx 10xx xxxx 10xx xxxx 10xx xxxx */ - len = 4; -#if defined(DUK_USE_STRICT_UTF8_SOURCE) - mincp = 0x10000UL; -#endif - x = x & 0x07UL; - } else { - /* no point in supporting encodings of 5 or more bytes */ - goto error_encoding; - } - - DUK_ASSERT(lex_ctx->input_length >= lex_ctx->input_offset); - if ((duk_size_t) len > (duk_size_t) (lex_ctx->input_length - lex_ctx->input_offset)) { - goto error_clipped; - } - - p++; - for (i = 1; i < len; i++) { - duk_small_uint_t y; - y = *p++; - if ((y & 0xc0U) != 0x80U) { - /* check that byte has the form 10xx xxxx */ - goto error_encoding; - } - x = x << 6; - x += y & 0x3fUL; - } - - /* check final character validity */ - - if (x > 0x10ffffUL) { - goto error_encoding; - } -#if defined(DUK_USE_STRICT_UTF8_SOURCE) - if (x < mincp || (x >= 0xd800UL && x <= 0xdfffUL) || x == 0xfffeUL) { - goto error_encoding; - } -#endif - - /* input offset tracking */ - lex_ctx->input_offset += len; - - /* line tracking */ - DUK_ASSERT(x != 0x000aUL && x != 0x000dUL); - if ((x == 0x2028UL) || (x == 0x2029UL)) { - lex_ctx->input_line++; - } - - return (duk_codepoint_t) x; - -error_clipped: /* clipped codepoint */ -error_encoding: /* invalid codepoint encoding or codepoint */ - DUK_ERROR_SYNTAX(lex_ctx->thr, DUK_STR_SOURCE_DECODE_FAILED); - DUK_WO_NORETURN(return 0;); -} - -DUK_LOCAL void duk__advance_bytes(duk_lexer_ctx *lex_ctx, duk_small_uint_t count_bytes) { - duk_small_uint_t keep_bytes; - duk_lexer_codepoint *cp, *cp_end; - - DUK_ASSERT_DISABLE(count_bytes >= 0); /* unsigned */ - DUK_ASSERT(count_bytes <= (duk_small_uint_t) (DUK_LEXER_WINDOW_SIZE * sizeof(duk_lexer_codepoint))); - - /* Zero 'count' is also allowed to make call sites easier. */ - - keep_bytes = DUK_LEXER_WINDOW_SIZE * sizeof(duk_lexer_codepoint) - count_bytes; - duk_memmove((void *) lex_ctx->window, (const void *) ((duk_uint8_t *) lex_ctx->window + count_bytes), (size_t) keep_bytes); - - cp = (duk_lexer_codepoint *) ((duk_uint8_t *) lex_ctx->window + keep_bytes); - cp_end = lex_ctx->window + DUK_LEXER_WINDOW_SIZE; - for (; cp != cp_end; cp++) { - cp->offset = lex_ctx->input_offset; - cp->line = lex_ctx->input_line; - cp->codepoint = duk__read_char(lex_ctx); - } -} - -DUK_LOCAL void duk__init_lexer_window(duk_lexer_ctx *lex_ctx) { - /* Call with count == DUK_LEXER_WINDOW_SIZE to fill buffer initially. */ - duk__advance_bytes(lex_ctx, DUK_LEXER_WINDOW_SIZE * sizeof(duk_lexer_codepoint)); /* fill window */ -} -#endif /* DUK_USE_LEXER_SLIDING_WINDOW */ - -DUK_LOCAL void duk__advance_chars(duk_lexer_ctx *lex_ctx, duk_small_uint_t count_chars) { - duk__advance_bytes(lex_ctx, count_chars * sizeof(duk_lexer_codepoint)); -} - -/* - * (Re)initialize the temporary byte buffer. May be called extra times - * with little impact. - */ - -DUK_LOCAL void duk__initbuffer(duk_lexer_ctx *lex_ctx) { - /* Reuse buffer as is unless buffer has grown large. */ - if (DUK_HBUFFER_DYNAMIC_GET_SIZE(lex_ctx->buf) < DUK_LEXER_TEMP_BUF_LIMIT) { - /* Keep current size */ - } else { - duk_hbuffer_resize(lex_ctx->thr, lex_ctx->buf, DUK_LEXER_TEMP_BUF_LIMIT); - } - - DUK_BW_INIT_WITHBUF(lex_ctx->thr, &lex_ctx->bw, lex_ctx->buf); -} - -/* - * Append a Unicode codepoint to the temporary byte buffer. Performs - * CESU-8 surrogate pair encoding for codepoints above the BMP. - * Existing surrogate pairs are allowed and also encoded into CESU-8. - */ - -DUK_LOCAL void duk__appendbuffer(duk_lexer_ctx *lex_ctx, duk_codepoint_t x) { - /* - * Since character data is only generated by decoding the source or by - * the compiler itself, we rely on the input codepoints being correct - * and avoid a check here. - * - * Character data can also come here through decoding of Unicode - * escapes ("\udead\ubeef") so all 16-but unsigned values can be - * present, even when the source file itself is strict UTF-8. - */ - DUK_ASSERT(x >= 0 && x <= 0x10ffffL); - - DUK_BW_WRITE_ENSURE_CESU8(lex_ctx->thr, &lex_ctx->bw, (duk_ucodepoint_t) x); -} - -DUK_LOCAL void duk__appendbuffer_ascii(duk_lexer_ctx *lex_ctx, duk_codepoint_t x) { - /* ASCII characters can be emitted as a single byte without encoding - * which matters for some fast paths. - */ - DUK_ASSERT(x >= 0 && x <= 0x7f); - - DUK_BW_WRITE_ENSURE_U8(lex_ctx->thr, &lex_ctx->bw, (duk_uint8_t) x); -} - -/* - * Intern the temporary byte buffer into a valstack slot - * (in practice, slot1 or slot2). - */ - -DUK_LOCAL duk_hstring *duk__internbuffer(duk_lexer_ctx *lex_ctx, duk_idx_t valstack_idx) { - DUK_ASSERT(valstack_idx == lex_ctx->slot1_idx || valstack_idx == lex_ctx->slot2_idx); - - DUK_BW_PUSH_AS_STRING(lex_ctx->thr, &lex_ctx->bw); - duk_replace(lex_ctx->thr, valstack_idx); - return duk_known_hstring(lex_ctx->thr, valstack_idx); -} - -/* - * Init lexer context - */ - -DUK_INTERNAL void duk_lexer_initctx(duk_lexer_ctx *lex_ctx) { - DUK_ASSERT(lex_ctx != NULL); - - duk_memzero(lex_ctx, sizeof(*lex_ctx)); -#if defined(DUK_USE_EXPLICIT_NULL_INIT) -#if defined(DUK_USE_LEXER_SLIDING_WINDOW) - lex_ctx->window = NULL; -#endif - lex_ctx->thr = NULL; - lex_ctx->input = NULL; - lex_ctx->buf = NULL; -#endif -} - -/* - * Set lexer input position and reinitialize lookup window. - */ - -DUK_INTERNAL void duk_lexer_getpoint(duk_lexer_ctx *lex_ctx, duk_lexer_point *pt) { - pt->offset = lex_ctx->window[0].offset; - pt->line = lex_ctx->window[0].line; -} - -DUK_INTERNAL void duk_lexer_setpoint(duk_lexer_ctx *lex_ctx, duk_lexer_point *pt) { - DUK_ASSERT_DISABLE(pt->offset >= 0); /* unsigned */ - DUK_ASSERT(pt->line >= 1); - lex_ctx->input_offset = pt->offset; - lex_ctx->input_line = pt->line; - duk__init_lexer_window(lex_ctx); -} - -/* - * Lexing helpers - */ - -/* Numeric value of a hex digit (also covers octal and decimal digits) or - * -1 if not a valid hex digit. - */ -DUK_LOCAL duk_codepoint_t duk__hexval_validate(duk_codepoint_t x) { - duk_small_int_t t; - - /* Here 'x' is a Unicode codepoint */ - if (DUK_LIKELY(x >= 0 && x <= 0xff)) { - t = duk_hex_dectab[x]; - if (DUK_LIKELY(t >= 0)) { - return t; - } - } - - return -1; -} - -/* Just a wrapper for call sites where 'x' is known to be valid so - * we assert for it before decoding. - */ -DUK_LOCAL duk_codepoint_t duk__hexval(duk_codepoint_t x) { - duk_codepoint_t ret; - - DUK_ASSERT((x >= DUK_ASC_0 && x <= DUK_ASC_9) || (x >= DUK_ASC_LC_A && x <= DUK_ASC_LC_F) || - (x >= DUK_ASC_UC_A && x <= DUK_ASC_UC_F)); - ret = duk__hexval_validate(x); - DUK_ASSERT(ret >= 0 && ret <= 15); - return ret; -} - -/* having this as a separate function provided a size benefit */ -DUK_LOCAL duk_bool_t duk__is_hex_digit(duk_codepoint_t x) { - if (DUK_LIKELY(x >= 0 && x <= 0xff)) { - return (duk_hex_dectab[x] >= 0); - } - return 0; -} - -/* Parse a Unicode escape of the form \xHH, \uHHHH, or \u{H+}. Shared by - * source and RegExp parsing. - */ -DUK_LOCAL duk_codepoint_t duk__lexer_parse_escape(duk_lexer_ctx *lex_ctx, duk_bool_t allow_es6) { - duk_small_int_t digits; /* Initial value 2 or 4 for fixed length escapes, 0 for ES2015 \u{H+}. */ - duk_codepoint_t escval; - duk_codepoint_t x; - duk_small_uint_t adv; - - DUK_ASSERT(DUK__L0() == DUK_ASC_BACKSLASH); /* caller responsibilities */ - DUK_ASSERT(DUK__L1() == DUK_ASC_LC_X || DUK__L1() == DUK_ASC_LC_U); - DUK_UNREF(allow_es6); - - adv = 2; - digits = 2; - if (DUK__L1() == DUK_ASC_LC_U) { - digits = 4; -#if defined(DUK_USE_ES6_UNICODE_ESCAPE) - if (DUK__L2() == DUK_ASC_LCURLY && allow_es6) { - digits = 0; - adv = 3; - } -#endif - } - DUK__ADVANCECHARS(lex_ctx, adv); - - escval = 0; - for (;;) { - /* One of the escape forms: \xHH, \uHHHH, \u{H+}. - * The 'digits' variable tracks parsing state and is - * initialized to: - * - * \xHH 2 - * \uHH 4 - * \u{H+} 0 first time, updated to -1 to indicate - * at least one digit has been parsed - * - * Octal parsing is handled separately because it can be - * done with fixed lookahead and also has validation - * rules which depend on the escape length (which is - * variable). - * - * We don't need a specific check for x < 0 (end of - * input) or duk_unicode_is_line_terminator(x) - * because the 'dig' decode will fail and lead to a - * SyntaxError. - */ - duk_codepoint_t dig; - - x = DUK__L0(); - DUK__ADVANCECHARS(lex_ctx, 1); - - dig = duk__hexval_validate(x); - if (digits > 0) { - digits--; - if (dig < 0) { - goto fail_escape; - } - DUK_ASSERT(dig >= 0x00 && dig <= 0x0f); - escval = (escval << 4) + dig; - if (digits == 0) { - DUK_ASSERT(escval >= 0 && escval <= 0xffffL); - break; - } - } else { -#if defined(DUK_USE_ES6_UNICODE_ESCAPE) - DUK_ASSERT(digits == 0 /* first time */ || digits == -1 /* others */); - if (dig >= 0) { - DUK_ASSERT(dig >= 0x00 && dig <= 0x0f); - escval = (escval << 4) + dig; - if (escval > 0x10ffffL) { - goto fail_escape; - } - } else if (x == DUK_ASC_RCURLY) { - if (digits == 0) { - /* Empty escape, \u{}. */ - goto fail_escape; - } - DUK_ASSERT(escval >= 0 && escval <= 0x10ffffL); - break; - } else { - goto fail_escape; - } - digits = -1; /* Indicate we have at least one digit. */ -#else /* DUK_USE_ES6_UNICODE_ESCAPE */ - DUK_ASSERT(0); /* Never happens if \u{H+} support disabled. */ -#endif /* DUK_USE_ES6_UNICODE_ESCAPE */ - } - } - - return escval; - -fail_escape: - DUK_ERROR_SYNTAX(lex_ctx->thr, DUK_STR_INVALID_ESCAPE); - DUK_WO_NORETURN(return 0;); -} - -/* Parse legacy octal escape of the form \N{1,3}, e.g. \0, \5, \0377. Maximum - * allowed value is \0377 (U+00FF), longest match is used. Used for both string - * RegExp octal escape parsing. Window[0] must be the slash '\' and the first - * digit must already be validated to be in [0-9] by the caller. - */ -DUK_LOCAL duk_codepoint_t duk__lexer_parse_legacy_octal(duk_lexer_ctx *lex_ctx, - duk_small_uint_t *out_adv, - duk_bool_t reject_annex_b) { - duk_codepoint_t cp; - duk_small_uint_t lookup_idx; - duk_small_uint_t adv; - duk_codepoint_t tmp; - - DUK_ASSERT(out_adv != NULL); - DUK_ASSERT(DUK__LOOKUP(lex_ctx, 0) == DUK_ASC_BACKSLASH); - DUK_ASSERT(DUK__LOOKUP(lex_ctx, 1) >= DUK_ASC_0 && DUK__LOOKUP(lex_ctx, 1) <= DUK_ASC_9); - - cp = 0; - tmp = 0; - for (lookup_idx = 1; lookup_idx <= 3; lookup_idx++) { - DUK_DDD(DUK_DDDPRINT("lookup_idx=%ld, cp=%ld", (long) lookup_idx, (long) cp)); - tmp = DUK__LOOKUP(lex_ctx, lookup_idx); - if (tmp < DUK_ASC_0 || tmp > DUK_ASC_7) { - /* No more valid digits. */ - break; - } - tmp = (cp << 3) + (tmp - DUK_ASC_0); - if (tmp > 0xff) { - /* Three digit octal escapes above \377 (= 0xff) - * are not allowed. - */ - break; - } - cp = tmp; - } - DUK_DDD(DUK_DDDPRINT("final lookup_idx=%ld, cp=%ld", (long) lookup_idx, (long) cp)); - - adv = lookup_idx; - if (lookup_idx == 1) { - DUK_DDD(DUK_DDDPRINT("\\8 or \\9 -> treat as literal, accept in strict mode too")); - DUK_ASSERT(tmp == DUK_ASC_8 || tmp == DUK_ASC_9); - cp = tmp; - adv++; /* correction to above, eat offending character */ - } else if (lookup_idx == 2 && cp == 0) { - /* Note: 'foo\0bar' is OK in strict mode, but 'foo\00bar' is not. - * It won't be interpreted as 'foo\u{0}0bar' but as a SyntaxError. - */ - DUK_DDD(DUK_DDDPRINT("\\0 -> accept in strict mode too")); - } else { - /* This clause also handles non-shortest zero, e.g. \00. */ - if (reject_annex_b) { - DUK_DDD(DUK_DDDPRINT("non-zero octal literal %ld -> reject in strict-mode", (long) cp)); - cp = -1; - } else { - DUK_DDD(DUK_DDDPRINT("non-zero octal literal %ld -> accepted", (long) cp)); - DUK_ASSERT(cp >= 0 && cp <= 0xff); - } - } - - *out_adv = adv; - - DUK_ASSERT((cp >= 0 && cp <= 0xff) || (cp == -1 && reject_annex_b)); - return cp; -} - -/* XXX: move strict mode to lex_ctx? */ -DUK_LOCAL void duk__lexer_parse_string_literal(duk_lexer_ctx *lex_ctx, - duk_token *out_token, - duk_small_int_t quote, - duk_bool_t strict_mode) { - duk_small_uint_t adv; - - for (adv = 1 /* initial quote */;;) { - duk_codepoint_t x; - - DUK__ADVANCECHARS(lex_ctx, adv); /* eat opening quote on first loop */ - x = DUK__L0(); - - adv = 1; - if (x == quote) { - DUK__ADVANCECHARS(lex_ctx, 1); /* eat closing quote */ - break; - } else if (x == '\\') { - /* DUK__L0 -> '\' char - * DUK__L1 ... DUK__L5 -> more lookup - */ - duk_small_int_t emitcp = -1; - - x = DUK__L1(); - - /* How much to advance before next loop. */ - adv = 2; /* note: long live range */ - - switch (x) { - case '\'': - emitcp = 0x0027; - break; - case '"': - emitcp = 0x0022; - break; - case '\\': - emitcp = 0x005c; - break; - case 'b': - emitcp = 0x0008; - break; - case 'f': - emitcp = 0x000c; - break; - case 'n': - emitcp = 0x000a; - break; - case 'r': - emitcp = 0x000d; - break; - case 't': - emitcp = 0x0009; - break; - case 'v': - emitcp = 0x000b; - break; - case 'x': - case 'u': { - duk_codepoint_t esc_cp; - esc_cp = duk__lexer_parse_escape(lex_ctx, 1 /*allow_es6*/); - DUK__APPENDBUFFER(lex_ctx, esc_cp); - adv = 0; - break; - } - default: { - if (duk_unicode_is_line_terminator(x)) { - /* line continuation */ - if (x == 0x000d && DUK__L2() == 0x000a) { - /* CR LF again a special case */ - adv = 3; /* line terminator, CR, LF */ - } - } else if (DUK__ISDIGIT(x)) { - /* - * Octal escape or zero escape: - * \0 (lookahead not OctalDigit) - * \1 ... \7 (lookahead not OctalDigit) - * \ZeroToThree OctalDigit (lookahead not OctalDigit) - * \FourToSeven OctalDigit (no lookahead restrictions) - * \ZeroToThree OctalDigit OctalDigit (no lookahead restrictions) - * - * Zero escape is part of the standard syntax. Octal escapes are - * defined in E5 Section B.1.2, and are only allowed in non-strict mode. - * Any other productions starting with a decimal digit are invalid - * but are in practice treated like identity escapes. - * - * Parse octal (up to 3 digits) from the lookup window. - */ - - emitcp = duk__lexer_parse_legacy_octal(lex_ctx, &adv, strict_mode /*reject_annex_b*/); - if (emitcp < 0) { - goto fail_escape; - } - } else if (x < 0) { - goto fail_unterminated; - } else { - /* escaped NonEscapeCharacter */ - DUK__APPENDBUFFER(lex_ctx, x); - } - } /* end default clause */ - } /* end switch */ - - /* Shared handling for single codepoint escapes. */ - if (emitcp >= 0) { - DUK__APPENDBUFFER(lex_ctx, emitcp); - } - - /* Track number of escapes; count not really needed but directive - * prologues need to detect whether there were any escapes or line - * continuations or not. - */ - out_token->num_escapes++; - } else if (x >= 0x20 && x <= 0x7f) { - /* Fast path for ASCII case, avoids line terminator - * check and CESU-8 encoding. - */ - DUK_ASSERT(x >= 0); - DUK_ASSERT(!duk_unicode_is_line_terminator(x)); - DUK_ASSERT(x != quote); - DUK_ASSERT(x != DUK_ASC_BACKSLASH); - DUK__APPENDBUFFER_ASCII(lex_ctx, x); - } else if (x < 0 || duk_unicode_is_line_terminator(x)) { - goto fail_unterminated; - } else { - /* Character which is part of the string but wasn't handled - * by the fast path. - */ - DUK__APPENDBUFFER(lex_ctx, x); - } - } /* string parse loop */ - - return; - -fail_escape: - DUK_ERROR_SYNTAX(lex_ctx->thr, DUK_STR_INVALID_ESCAPE); - DUK_WO_NORETURN(return;); - -fail_unterminated: - DUK_ERROR_SYNTAX(lex_ctx->thr, DUK_STR_UNTERMINATED_STRING); - DUK_WO_NORETURN(return;); -} - -/* Skip to end-of-line (or end-of-file), used for single line comments. */ -DUK_LOCAL void duk__lexer_skip_to_endofline(duk_lexer_ctx *lex_ctx) { - for (;;) { - duk_codepoint_t x; - - x = DUK__L0(); - if (x < 0 || duk_unicode_is_line_terminator(x)) { - break; - } - DUK__ADVANCECHARS(lex_ctx, 1); - } -} - -/* - * Parse ECMAScript source InputElementDiv or InputElementRegExp - * (E5 Section 7), skipping whitespace, comments, and line terminators. - * - * Possible results are: - * (1) a token - * (2) a line terminator (skipped) - * (3) a comment (skipped) - * (4) EOF - * - * White space is automatically skipped from the current position (but - * not after the input element). If input has already ended, returns - * DUK_TOK_EOF indefinitely. If a parse error occurs, uses an DUK_ERROR() - * macro call (and hence a longjmp through current heap longjmp context). - * Comments and line terminator tokens are automatically skipped. - * - * The input element being matched is determined by regexp_mode; if set, - * parses a InputElementRegExp, otherwise a InputElementDiv. The - * difference between these are handling of productions starting with a - * forward slash. - * - * If strict_mode is set, recognizes additional future reserved words - * specific to strict mode, and refuses to parse octal literals. - * - * The matching strategy below is to (currently) use a six character - * lookup window to quickly determine which production is the -longest- - * matching one, and then parse that. The top-level if-else clauses - * match the first character, and the code blocks for each clause - * handle -all- alternatives for that first character. ECMAScript - * specification uses the "longest match wins" semantics, so the order - * of the if-clauses matters. - * - * Misc notes: - * - * * ECMAScript numeric literals do not accept a sign character. - * Consequently e.g. "-1.0" is parsed as two tokens: a negative - * sign and a positive numeric literal. The compiler performs - * the negation during compilation, so this has no adverse impact. - * - * * There is no token for "undefined": it is just a value available - * from the global object (or simply established by doing a reference - * to an undefined value). - * - * * Some contexts want Identifier tokens, which are IdentifierNames - * excluding reserved words, while some contexts want IdentifierNames - * directly. In the latter case e.g. "while" is interpreted as an - * identifier name, not a DUK_TOK_WHILE token. The solution here is - * to provide both token types: DUK_TOK_WHILE goes to 't' while - * DUK_TOK_IDENTIFIER goes to 't_nores', and 'slot1' always contains - * the identifier / keyword name. - * - * * Directive prologue needs to identify string literals such as - * "use strict" and 'use strict', which are sensitive to line - * continuations and escape sequences. For instance, "use\u0020strict" - * is a valid directive but is distinct from "use strict". The solution - * here is to decode escapes while tokenizing, but to keep track of the - * number of escapes. Directive detection can then check that the - * number of escapes is zero. - * - * * Multi-line comments with one or more internal LineTerminator are - * treated like a line terminator to comply with automatic semicolon - * insertion. - */ - -DUK_INTERNAL -void duk_lexer_parse_js_input_element(duk_lexer_ctx *lex_ctx, - duk_token *out_token, - duk_bool_t strict_mode, - duk_bool_t regexp_mode) { - duk_codepoint_t x; /* temporary, must be signed and 32-bit to hold Unicode code points */ - duk_small_uint_t advtok = 0; /* (advance << 8) + token_type, updated at function end, - * init is unnecessary but suppresses "may be used uninitialized" warnings. - */ - duk_bool_t got_lineterm = 0; /* got lineterm preceding non-whitespace, non-lineterm token */ - - if (++lex_ctx->token_count >= lex_ctx->token_limit) { - goto fail_token_limit; - } - - out_token->t = DUK_TOK_EOF; - out_token->t_nores = DUK_TOK_INVALID; /* marker: copy t if not changed */ -#if 0 /* not necessary to init, disabled for faster parsing */ - out_token->num = DUK_DOUBLE_NAN; - out_token->str1 = NULL; - out_token->str2 = NULL; -#endif - out_token->num_escapes = 0; - /* out_token->lineterm set by caller */ - - /* This would be nice, but parsing is faster without resetting the - * value slots. The only side effect is that references to temporary - * string values may linger until lexing is finished; they're then - * freed normally. - */ -#if 0 - duk_to_undefined(lex_ctx->thr, lex_ctx->slot1_idx); - duk_to_undefined(lex_ctx->thr, lex_ctx->slot2_idx); -#endif - - /* 'advtok' indicates how much to advance and which token id to assign - * at the end. This shared functionality minimizes code size. All - * code paths are required to set 'advtok' to some value, so no default - * init value is used. Code paths calling DUK_ERROR() never return so - * they don't need to set advtok. - */ - - /* - * Matching order: - * - * Punctuator first chars, also covers comments, regexps - * LineTerminator - * Identifier or reserved word, also covers null/true/false literals - * NumericLiteral - * StringLiteral - * EOF - * - * The order does not matter as long as the longest match is - * always correctly identified. There are order dependencies - * in the clauses, so it's not trivial to convert to a switch. - */ - -restart_lineupdate: - out_token->start_line = lex_ctx->window[0].line; - -restart: - out_token->start_offset = lex_ctx->window[0].offset; - - x = DUK__L0(); - - switch (x) { - case DUK_ASC_SPACE: - case DUK_ASC_HT: /* fast paths for space and tab */ - DUK__ADVANCECHARS(lex_ctx, 1); - goto restart; - case DUK_ASC_LF: /* LF line terminator; CR LF and Unicode lineterms are handled in slow path */ - DUK__ADVANCECHARS(lex_ctx, 1); - got_lineterm = 1; - goto restart_lineupdate; -#if defined(DUK_USE_SHEBANG_COMMENTS) - case DUK_ASC_HASH: /* '#' */ - if (DUK__L1() == DUK_ASC_EXCLAMATION && lex_ctx->window[0].offset == 0 && (lex_ctx->flags & DUK_COMPILE_SHEBANG)) { - /* "Shebang" comment ('#! ...') on first line. */ - /* DUK__ADVANCECHARS(lex_ctx, 2) would be correct here, but not necessary */ - duk__lexer_skip_to_endofline(lex_ctx); - goto restart; /* line terminator will be handled on next round */ - } - goto fail_token; -#endif /* DUK_USE_SHEBANG_COMMENTS */ - case DUK_ASC_SLASH: /* '/' */ - if (DUK__L1() == DUK_ASC_SLASH) { - /* - * E5 Section 7.4, allow SourceCharacter (which is any 16-bit - * code point). - */ - - /* DUK__ADVANCECHARS(lex_ctx, 2) would be correct here, but not necessary */ - duk__lexer_skip_to_endofline(lex_ctx); - goto restart; /* line terminator will be handled on next round */ - } else if (DUK__L1() == DUK_ASC_STAR) { - /* - * E5 Section 7.4. If the multi-line comment contains a newline, - * it is treated like a single line terminator for automatic - * semicolon insertion. - */ - - duk_bool_t last_asterisk = 0; - DUK__ADVANCECHARS(lex_ctx, 2); - for (;;) { - x = DUK__L0(); - if (x < 0) { - goto fail_unterm_comment; - } - DUK__ADVANCECHARS(lex_ctx, 1); - if (last_asterisk && x == DUK_ASC_SLASH) { - break; - } - if (duk_unicode_is_line_terminator(x)) { - got_lineterm = 1; - } - last_asterisk = (x == DUK_ASC_STAR); - } - goto restart_lineupdate; - } else if (regexp_mode) { -#if defined(DUK_USE_REGEXP_SUPPORT) - /* - * "/" followed by something in regexp mode. See E5 Section 7.8.5. - * - * RegExp parsing is a bit complex. First, the regexp body is delimited - * by forward slashes, but the body may also contain forward slashes as - * part of an escape sequence or inside a character class (delimited by - * square brackets). A mini state machine is used to implement these. - * - * Further, an early (parse time) error must be thrown if the regexp - * would cause a run-time error when used in the expression new RegExp(...). - * Parsing here simply extracts the (candidate) regexp, and also accepts - * invalid regular expressions (which are delimited properly). The caller - * (compiler) must perform final validation and regexp compilation. - * - * RegExp first char may not be '/' (single line comment) or '*' (multi- - * line comment). These have already been checked above, so there is no - * need below for special handling of the first regexp character as in - * the E5 productions. - * - * About unicode escapes within regexp literals: - * - * E5 Section 7.8.5 grammar does NOT accept \uHHHH escapes. - * However, Section 6 states that regexps accept the escapes, - * see paragraph starting with "In string literals...". - * The regexp grammar, which sees the decoded regexp literal - * (after lexical parsing) DOES have a \uHHHH unicode escape. - * So, for instance: - * - * /\u1234/ - * - * should first be parsed by the lexical grammar as: - * - * '\' 'u' RegularExpressionBackslashSequence - * '1' RegularExpressionNonTerminator - * '2' RegularExpressionNonTerminator - * '3' RegularExpressionNonTerminator - * '4' RegularExpressionNonTerminator - * - * and the escape itself is then parsed by the regexp engine. - * This is the current implementation. - * - * Minor spec inconsistency: - * - * E5 Section 7.8.5 RegularExpressionBackslashSequence is: - * - * \ RegularExpressionNonTerminator - * - * while Section A.1 RegularExpressionBackslashSequence is: - * - * \ NonTerminator - * - * The latter is not normative and a typo. - * - */ - - /* first, parse regexp body roughly */ - - duk_small_int_t state = 0; /* 0=base, 1=esc, 2=class, 3=class+esc */ - - DUK__INITBUFFER(lex_ctx); - for (;;) { - DUK__ADVANCECHARS(lex_ctx, 1); /* skip opening slash on first loop */ - x = DUK__L0(); - if (x < 0 || duk_unicode_is_line_terminator(x)) { - goto fail_unterm_regexp; - } - x = DUK__L0(); /* re-read to avoid spill / fetch */ - if (state == 0) { - if (x == DUK_ASC_SLASH) { - DUK__ADVANCECHARS(lex_ctx, 1); /* eat closing slash */ - break; - } else if (x == DUK_ASC_BACKSLASH) { - state = 1; - } else if (x == DUK_ASC_LBRACKET) { - state = 2; - } - } else if (state == 1) { - state = 0; - } else if (state == 2) { - if (x == DUK_ASC_RBRACKET) { - state = 0; - } else if (x == DUK_ASC_BACKSLASH) { - state = 3; - } - } else { /* state == 3 */ - state = 2; - } - DUK__APPENDBUFFER(lex_ctx, x); - } - out_token->str1 = duk__internbuffer(lex_ctx, lex_ctx->slot1_idx); - - /* second, parse flags */ - - DUK__INITBUFFER(lex_ctx); - for (;;) { - x = DUK__L0(); - if (!duk_unicode_is_identifier_part(x)) { - break; - } - x = DUK__L0(); /* re-read to avoid spill / fetch */ - DUK__APPENDBUFFER(lex_ctx, x); - DUK__ADVANCECHARS(lex_ctx, 1); - } - out_token->str2 = duk__internbuffer(lex_ctx, lex_ctx->slot2_idx); - - DUK__INITBUFFER(lex_ctx); /* free some memory */ - - /* validation of the regexp is caller's responsibility */ - - advtok = DUK__ADVTOK(0, DUK_TOK_REGEXP); -#else /* DUK_USE_REGEXP_SUPPORT */ - goto fail_regexp_support; -#endif /* DUK_USE_REGEXP_SUPPORT */ - } else if (DUK__L1() == DUK_ASC_EQUALS) { - /* "/=" and not in regexp mode */ - advtok = DUK__ADVTOK(2, DUK_TOK_DIV_EQ); - } else { - /* "/" and not in regexp mode */ - advtok = DUK__ADVTOK(1, DUK_TOK_DIV); - } - break; - case DUK_ASC_LCURLY: /* '{' */ - advtok = DUK__ADVTOK(1, DUK_TOK_LCURLY); - break; - case DUK_ASC_RCURLY: /* '}' */ - advtok = DUK__ADVTOK(1, DUK_TOK_RCURLY); - break; - case DUK_ASC_LPAREN: /* '(' */ - advtok = DUK__ADVTOK(1, DUK_TOK_LPAREN); - break; - case DUK_ASC_RPAREN: /* ')' */ - advtok = DUK__ADVTOK(1, DUK_TOK_RPAREN); - break; - case DUK_ASC_LBRACKET: /* '[' */ - advtok = DUK__ADVTOK(1, DUK_TOK_LBRACKET); - break; - case DUK_ASC_RBRACKET: /* ']' */ - advtok = DUK__ADVTOK(1, DUK_TOK_RBRACKET); - break; - case DUK_ASC_PERIOD: /* '.' */ - if (DUK__ISDIGIT(DUK__L1())) { - /* Period followed by a digit can only start DecimalLiteral - * (handled in slow path). We could jump straight into the - * DecimalLiteral handling but should avoid goto to inside - * a block. - */ - goto slow_path; - } - advtok = DUK__ADVTOK(1, DUK_TOK_PERIOD); - break; - case DUK_ASC_SEMICOLON: /* ';' */ - advtok = DUK__ADVTOK(1, DUK_TOK_SEMICOLON); - break; - case DUK_ASC_COMMA: /* ',' */ - advtok = DUK__ADVTOK(1, DUK_TOK_COMMA); - break; - case DUK_ASC_LANGLE: /* '<' */ -#if defined(DUK_USE_HTML_COMMENTS) - if (DUK__L1() == DUK_ASC_EXCLAMATION && DUK__L2() == DUK_ASC_MINUS && DUK__L3() == DUK_ASC_MINUS) { - /* - * ES2015: B.1.3, handle "" SingleLineHTMLCloseComment - * Only allowed: - * - on new line - * - preceded only by whitespace - * - preceded by end of multiline comment and optional whitespace - * - * Since whitespace generates no tokens, and multiline comments - * are treated as a line ending, consulting `got_lineterm` is - * sufficient to test for these three options. - */ - - /* DUK__ADVANCECHARS(lex_ctx, 3) would be correct here, but not necessary */ - duk__lexer_skip_to_endofline(lex_ctx); - goto restart; /* line terminator will be handled on next round */ - } else -#endif /* DUK_USE_HTML_COMMENTS */ - if (DUK__L1() == DUK_ASC_MINUS) { - advtok = DUK__ADVTOK(2, DUK_TOK_DECREMENT); - } else if (DUK__L1() == DUK_ASC_EQUALS) { - advtok = DUK__ADVTOK(2, DUK_TOK_SUB_EQ); - } else { - advtok = DUK__ADVTOK(1, DUK_TOK_SUB); - } - break; - case DUK_ASC_STAR: /* '*' */ -#if defined(DUK_USE_ES7_EXP_OPERATOR) - if (DUK__L1() == DUK_ASC_STAR && DUK__L2() == DUK_ASC_EQUALS) { - advtok = DUK__ADVTOK(3, DUK_TOK_EXP_EQ); - } else if (DUK__L1() == DUK_ASC_STAR) { - advtok = DUK__ADVTOK(2, DUK_TOK_EXP); - } else -#endif - if (DUK__L1() == DUK_ASC_EQUALS) { - advtok = DUK__ADVTOK(2, DUK_TOK_MUL_EQ); - } else { - advtok = DUK__ADVTOK(1, DUK_TOK_MUL); - } - break; - case DUK_ASC_PERCENT: /* '%' */ - if (DUK__L1() == DUK_ASC_EQUALS) { - advtok = DUK__ADVTOK(2, DUK_TOK_MOD_EQ); - } else { - advtok = DUK__ADVTOK(1, DUK_TOK_MOD); - } - break; - case DUK_ASC_AMP: /* '&' */ - if (DUK__L1() == DUK_ASC_AMP) { - advtok = DUK__ADVTOK(2, DUK_TOK_LAND); - } else if (DUK__L1() == DUK_ASC_EQUALS) { - advtok = DUK__ADVTOK(2, DUK_TOK_BAND_EQ); - } else { - advtok = DUK__ADVTOK(1, DUK_TOK_BAND); - } - break; - case DUK_ASC_PIPE: /* '|' */ - if (DUK__L1() == DUK_ASC_PIPE) { - advtok = DUK__ADVTOK(2, DUK_TOK_LOR); - } else if (DUK__L1() == DUK_ASC_EQUALS) { - advtok = DUK__ADVTOK(2, DUK_TOK_BOR_EQ); - } else { - advtok = DUK__ADVTOK(1, DUK_TOK_BOR); - } - break; - case DUK_ASC_CARET: /* '^' */ - if (DUK__L1() == DUK_ASC_EQUALS) { - advtok = DUK__ADVTOK(2, DUK_TOK_BXOR_EQ); - } else { - advtok = DUK__ADVTOK(1, DUK_TOK_BXOR); - } - break; - case DUK_ASC_TILDE: /* '~' */ - advtok = DUK__ADVTOK(1, DUK_TOK_BNOT); - break; - case DUK_ASC_QUESTION: /* '?' */ - advtok = DUK__ADVTOK(1, DUK_TOK_QUESTION); - break; - case DUK_ASC_COLON: /* ':' */ - advtok = DUK__ADVTOK(1, DUK_TOK_COLON); - break; - case DUK_ASC_DOUBLEQUOTE: /* '"' */ - case DUK_ASC_SINGLEQUOTE: { /* '\'' */ - DUK__INITBUFFER(lex_ctx); - duk__lexer_parse_string_literal(lex_ctx, out_token, x /*quote*/, strict_mode); - duk__internbuffer(lex_ctx, lex_ctx->slot1_idx); - out_token->str1 = duk_known_hstring(lex_ctx->thr, lex_ctx->slot1_idx); - - DUK__INITBUFFER(lex_ctx); /* free some memory */ - - advtok = DUK__ADVTOK(0, DUK_TOK_STRING); - break; - } - default: - goto slow_path; - } /* switch */ - - goto skip_slow_path; - -slow_path: - if (duk_unicode_is_line_terminator(x)) { - if (x == 0x000d && DUK__L1() == 0x000a) { - /* - * E5 Section 7.3: CR LF is detected as a single line terminator for - * line numbers. Here we also detect it as a single line terminator - * token. - */ - DUK__ADVANCECHARS(lex_ctx, 2); - } else { - DUK__ADVANCECHARS(lex_ctx, 1); - } - got_lineterm = 1; - goto restart_lineupdate; - } else if (duk_unicode_is_identifier_start(x) || x == DUK_ASC_BACKSLASH) { - /* - * Parse an identifier and then check whether it is: - * - reserved word (keyword or other reserved word) - * - "null" (NullLiteral) - * - "true" (BooleanLiteral) - * - "false" (BooleanLiteral) - * - anything else => identifier - * - * This does not follow the E5 productions cleanly, but is - * useful and compact. - * - * Note that identifiers may contain Unicode escapes, - * see E5 Sections 6 and 7.6. They must be decoded first, - * and the result checked against allowed characters. - * The above if-clause accepts an identifier start and an - * '\' character -- no other token can begin with a '\'. - * - * Note that "get" and "set" are not reserved words in E5 - * specification so they are recognized as plain identifiers - * (the tokens DUK_TOK_GET and DUK_TOK_SET are actually not - * used now). The compiler needs to work around this. - * - * Strictly speaking, following ECMAScript longest match - * specification, an invalid escape for the first character - * should cause a syntax error. However, an invalid escape - * for IdentifierParts should just terminate the identifier - * early (longest match), and let the next tokenization - * fail. For instance Rhino croaks with 'foo\z' when - * parsing the identifier. This has little practical impact. - */ - - duk_small_uint_t i, i_end; - duk_bool_t first = 1; - duk_hstring *str; - - DUK__INITBUFFER(lex_ctx); - for (;;) { - /* re-lookup first char on first loop */ - if (DUK__L0() == DUK_ASC_BACKSLASH) { - duk_codepoint_t esc_cp; - if (DUK__L1() != DUK_ASC_LC_U) { - goto fail_escape; - } - esc_cp = duk__lexer_parse_escape(lex_ctx, 1 /*allow_es6*/); - DUK__APPENDBUFFER(lex_ctx, esc_cp); - - /* IdentifierStart is stricter than IdentifierPart, so if the first - * character is escaped, must have a stricter check here. - */ - if (!(first ? duk_unicode_is_identifier_start(esc_cp) : duk_unicode_is_identifier_part(esc_cp))) { - goto fail_escape; - } - - /* Track number of escapes: necessary for proper keyword - * detection. - */ - out_token->num_escapes++; - } else { - /* Note: first character is checked against this. But because - * IdentifierPart includes all IdentifierStart characters, and - * the first character (if unescaped) has already been checked - * in the if condition, this is OK. - */ - if (!duk_unicode_is_identifier_part(DUK__L0())) { - break; - } - DUK__APPENDBUFFER(lex_ctx, DUK__L0()); - DUK__ADVANCECHARS(lex_ctx, 1); - } - first = 0; - } - - out_token->str1 = duk__internbuffer(lex_ctx, lex_ctx->slot1_idx); - str = out_token->str1; - out_token->t_nores = DUK_TOK_IDENTIFIER; - - DUK__INITBUFFER(lex_ctx); /* free some memory */ - - /* - * Interned identifier is compared against reserved words, which are - * currently interned into the heap context. See genbuiltins.py. - * - * Note that an escape in the identifier disables recognition of - * keywords; e.g. "\u0069f = 1;" is a valid statement (assigns to - * identifier named "if"). This is not necessarily compliant, - * see test-dec-escaped-char-in-keyword.js. - * - * Note: "get" and "set" are awkward. They are not officially - * ReservedWords (and indeed e.g. "var set = 1;" is valid), and - * must come out as DUK_TOK_IDENTIFIER. The compiler needs to - * work around this a bit. - */ - - /* XXX: optimize by adding the token numbers directly into the - * always interned duk_hstring objects (there should be enough - * flag bits free for that)? - */ - - i_end = (strict_mode ? DUK_STRIDX_END_RESERVED : DUK_STRIDX_START_STRICT_RESERVED); - - advtok = DUK__ADVTOK(0, DUK_TOK_IDENTIFIER); - if (out_token->num_escapes == 0) { - for (i = DUK_STRIDX_START_RESERVED; i < i_end; i++) { - DUK_ASSERT_DISABLE(i >= 0); /* unsigned */ - DUK_ASSERT(i < DUK_HEAP_NUM_STRINGS); - if (DUK_HTHREAD_GET_STRING(lex_ctx->thr, i) == str) { - advtok = DUK__ADVTOK(0, DUK_STRIDX_TO_TOK(i)); - break; - } - } - } - } else if (DUK__ISDIGIT(x) || (x == DUK_ASC_PERIOD)) { - /* Note: decimal number may start with a period, but must be followed by a digit */ - - /* - * Pre-parsing for decimal, hex, octal (both legacy and ES2015), - * and binary literals, followed by an actual parser step - * provided by numconv. - * - * Note: the leading sign character ('+' or '-') is -not- part of - * the production in E5 grammar, and that the a DecimalLiteral - * starting with a '0' must be followed by a non-digit. - * - * XXX: the two step parsing process is quite awkward, it would - * be more straightforward to allow numconv to parse the longest - * valid prefix (it already does that, it only needs to indicate - * where the input ended). However, the lexer decodes characters - * using a limited lookup window, so this is not a trivial change. - */ - - /* XXX: because of the final check below (that the literal is not - * followed by a digit), this could maybe be simplified, if we bail - * out early from a leading zero (and if there are no periods etc). - * Maybe too complex. - */ - - duk_double_t val; - duk_bool_t legacy_oct = 0; - duk_small_int_t state; /* 0=before period/exp, - * 1=after period, before exp - * 2=after exp, allow '+' or '-' - * 3=after exp and exp sign - */ - duk_small_uint_t s2n_flags; - duk_codepoint_t y, z; - duk_small_int_t s2n_radix = 10; - duk_small_uint_t pre_adv = 0; - - DUK__INITBUFFER(lex_ctx); - y = DUK__L1(); - - if (x == DUK_ASC_0) { - z = DUK_LOWERCASE_CHAR_ASCII(y); - - pre_adv = 2; /* default for 0xNNN, 0oNNN, 0bNNN. */ - if (z == DUK_ASC_LC_X) { - s2n_radix = 16; - } else if (z == DUK_ASC_LC_O) { - s2n_radix = 8; - } else if (z == DUK_ASC_LC_B) { - s2n_radix = 2; - } else { - pre_adv = 0; - if (DUK__ISDIGIT(y)) { - if (strict_mode) { - /* Reject octal like \07 but also octal-lookalike - * decimal like \08 in strict mode. - */ - goto fail_number_literal; - } else { - /* Legacy OctalIntegerLiteral or octal-lookalice - * decimal. Deciding between the two happens below - * in digit scanning. - */ - DUK__APPENDBUFFER(lex_ctx, x); - pre_adv = 1; - legacy_oct = 1; - s2n_radix = 8; /* tentative unless conflicting digits found */ - } - } - } - } - - DUK__ADVANCECHARS(lex_ctx, pre_adv); - - /* XXX: we could parse integers here directly, and fall back - * to numconv only when encountering a fractional expression - * or when an octal literal turned out to be decimal (0778 etc). - */ - state = 0; - for (;;) { - x = DUK__L0(); /* re-lookup curr char on first round */ - if (DUK__ISDIGIT(x)) { - /* Note: intentionally allow leading zeroes here, as the - * actual parser will check for them. - */ - if (state == 0 && legacy_oct && (x == DUK_ASC_8 || x == DUK_ASC_9)) { - /* Started out as an octal-lookalike - * but interpreted as decimal, e.g. - * '0779' -> 779. This also means - * that fractions are allowed, e.g. - * '0779.123' is allowed but '0777.123' - * is not! - */ - s2n_radix = 10; - } - if (state == 2) { - state = 3; - } - } else if (s2n_radix == 16 && DUK__ISHEXDIGIT(x)) { - /* Note: 'e' and 'E' are also accepted here. */ - ; - } else if (x == DUK_ASC_PERIOD) { - if (state >= 1 || s2n_radix != 10) { - break; - } else { - state = 1; - } - } else if (x == DUK_ASC_LC_E || x == DUK_ASC_UC_E) { - if (state >= 2 || s2n_radix != 10) { - break; - } else { - state = 2; - } - } else if (x == DUK_ASC_MINUS || x == DUK_ASC_PLUS) { - if (state != 2) { - break; - } else { - state = 3; - } - } else { - break; - } - DUK__APPENDBUFFER(lex_ctx, x); - DUK__ADVANCECHARS(lex_ctx, 1); - } - - /* XXX: better coercion */ - (void) duk__internbuffer(lex_ctx, lex_ctx->slot1_idx); - - if (s2n_radix != 10) { - /* For bases other than 10, integer only. */ - s2n_flags = DUK_S2N_FLAG_ALLOW_LEADING_ZERO; - } else { - s2n_flags = DUK_S2N_FLAG_ALLOW_EXP | DUK_S2N_FLAG_ALLOW_FRAC | DUK_S2N_FLAG_ALLOW_NAKED_FRAC | - DUK_S2N_FLAG_ALLOW_EMPTY_FRAC | DUK_S2N_FLAG_ALLOW_LEADING_ZERO; - } - - duk_dup(lex_ctx->thr, lex_ctx->slot1_idx); - duk_numconv_parse(lex_ctx->thr, s2n_radix, s2n_flags); - val = duk_to_number_m1(lex_ctx->thr); - if (DUK_ISNAN(val)) { - goto fail_number_literal; - } - duk_replace(lex_ctx->thr, lex_ctx->slot1_idx); /* could also just pop? */ - - DUK__INITBUFFER(lex_ctx); /* free some memory */ - - /* Section 7.8.3 (note): NumericLiteral must be followed by something other than - * IdentifierStart or DecimalDigit. - */ - - if (DUK__ISDIGIT(DUK__L0()) || duk_unicode_is_identifier_start(DUK__L0())) { - goto fail_number_literal; - } - - out_token->num = val; - advtok = DUK__ADVTOK(0, DUK_TOK_NUMBER); - } else if (duk_unicode_is_whitespace(DUK__LOOKUP(lex_ctx, 0))) { - DUK__ADVANCECHARS(lex_ctx, 1); - goto restart; - } else if (x < 0) { - advtok = DUK__ADVTOK(0, DUK_TOK_EOF); - } else { - goto fail_token; - } -skip_slow_path: - - /* - * Shared exit path - */ - - DUK__ADVANCEBYTES(lex_ctx, advtok >> 8); - out_token->t = advtok & 0xff; - if (out_token->t_nores == DUK_TOK_INVALID) { - out_token->t_nores = out_token->t; - } - out_token->lineterm = got_lineterm; - - /* Automatic semicolon insertion is allowed if a token is preceded - * by line terminator(s), or terminates a statement list (right curly - * or EOF). - */ - if (got_lineterm || out_token->t == DUK_TOK_RCURLY || out_token->t == DUK_TOK_EOF) { - out_token->allow_auto_semi = 1; - } else { - out_token->allow_auto_semi = 0; - } - - return; - -fail_token_limit: - DUK_ERROR_RANGE(lex_ctx->thr, DUK_STR_TOKEN_LIMIT); - DUK_WO_NORETURN(return;); - -fail_token: - DUK_ERROR_SYNTAX(lex_ctx->thr, DUK_STR_INVALID_TOKEN); - DUK_WO_NORETURN(return;); - -fail_number_literal: - DUK_ERROR_SYNTAX(lex_ctx->thr, DUK_STR_INVALID_NUMBER_LITERAL); - DUK_WO_NORETURN(return;); - -fail_escape: - DUK_ERROR_SYNTAX(lex_ctx->thr, DUK_STR_INVALID_ESCAPE); - DUK_WO_NORETURN(return;); - -fail_unterm_regexp: - DUK_ERROR_SYNTAX(lex_ctx->thr, DUK_STR_UNTERMINATED_REGEXP); - DUK_WO_NORETURN(return;); - -fail_unterm_comment: - DUK_ERROR_SYNTAX(lex_ctx->thr, DUK_STR_UNTERMINATED_COMMENT); - DUK_WO_NORETURN(return;); - -#if !defined(DUK_USE_REGEXP_SUPPORT) -fail_regexp_support: - DUK_ERROR_SYNTAX(lex_ctx->thr, DUK_STR_REGEXP_SUPPORT_DISABLED); - DUK_WO_NORETURN(return;); -#endif -} - -#if defined(DUK_USE_REGEXP_SUPPORT) - -/* - * Parse a RegExp token. The grammar is described in E5 Section 15.10. - * Terminal constructions (such as quantifiers) are parsed directly here. - * - * 0xffffffffU is used as a marker for "infinity" in quantifiers. Further, - * DUK__MAX_RE_QUANT_DIGITS limits the maximum number of digits that - * will be accepted for a quantifier. - */ - -DUK_INTERNAL void duk_lexer_parse_re_token(duk_lexer_ctx *lex_ctx, duk_re_token *out_token) { - duk_small_uint_t advtok = 0; /* init is unnecessary but suppresses "may be used uninitialized" warnings */ - duk_codepoint_t x, y; - - if (++lex_ctx->token_count >= lex_ctx->token_limit) { - goto fail_token_limit; - } - - duk_memzero(out_token, sizeof(*out_token)); - - x = DUK__L0(); - y = DUK__L1(); - - DUK_DDD(DUK_DDDPRINT("parsing regexp token, L0=%ld, L1=%ld", (long) x, (long) y)); - - switch (x) { - case DUK_ASC_PIPE: { - advtok = DUK__ADVTOK(1, DUK_RETOK_DISJUNCTION); - break; - } - case DUK_ASC_CARET: { - advtok = DUK__ADVTOK(1, DUK_RETOK_ASSERT_START); - break; - } - case DUK_ASC_DOLLAR: { - advtok = DUK__ADVTOK(1, DUK_RETOK_ASSERT_END); - break; - } - case DUK_ASC_QUESTION: { - out_token->qmin = 0; - out_token->qmax = 1; - if (y == DUK_ASC_QUESTION) { - advtok = DUK__ADVTOK(2, DUK_RETOK_QUANTIFIER); - out_token->greedy = 0; - } else { - advtok = DUK__ADVTOK(1, DUK_RETOK_QUANTIFIER); - out_token->greedy = 1; - } - break; - } - case DUK_ASC_STAR: { - out_token->qmin = 0; - out_token->qmax = DUK_RE_QUANTIFIER_INFINITE; - if (y == DUK_ASC_QUESTION) { - advtok = DUK__ADVTOK(2, DUK_RETOK_QUANTIFIER); - out_token->greedy = 0; - } else { - advtok = DUK__ADVTOK(1, DUK_RETOK_QUANTIFIER); - out_token->greedy = 1; - } - break; - } - case DUK_ASC_PLUS: { - out_token->qmin = 1; - out_token->qmax = DUK_RE_QUANTIFIER_INFINITE; - if (y == DUK_ASC_QUESTION) { - advtok = DUK__ADVTOK(2, DUK_RETOK_QUANTIFIER); - out_token->greedy = 0; - } else { - advtok = DUK__ADVTOK(1, DUK_RETOK_QUANTIFIER); - out_token->greedy = 1; - } - break; - } - case DUK_ASC_LCURLY: { - /* Production allows 'DecimalDigits', including leading zeroes */ - duk_uint32_t val1 = 0; - duk_uint32_t val2 = DUK_RE_QUANTIFIER_INFINITE; - duk_small_int_t digits = 0; -#if defined(DUK_USE_ES6_REGEXP_SYNTAX) - duk_lexer_point lex_pt; -#endif - -#if defined(DUK_USE_ES6_REGEXP_SYNTAX) - /* Store lexer position, restoring if quantifier is invalid. */ - DUK_LEXER_GETPOINT(lex_ctx, &lex_pt); -#endif - - for (;;) { - DUK__ADVANCECHARS(lex_ctx, 1); /* eat '{' on entry */ - x = DUK__L0(); - if (DUK__ISDIGIT(x)) { - digits++; - val1 = val1 * 10 + (duk_uint32_t) duk__hexval(x); - } else if (x == DUK_ASC_COMMA) { - if (digits > DUK__MAX_RE_QUANT_DIGITS) { - goto invalid_quantifier; - } - if (val2 != DUK_RE_QUANTIFIER_INFINITE) { - goto invalid_quantifier; - } - if (DUK__L1() == DUK_ASC_RCURLY) { - /* form: { DecimalDigits , }, val1 = min count */ - if (digits == 0) { - goto invalid_quantifier; - } - out_token->qmin = val1; - out_token->qmax = DUK_RE_QUANTIFIER_INFINITE; - DUK__ADVANCECHARS(lex_ctx, 2); - break; - } - val2 = val1; - val1 = 0; - digits = 0; /* not strictly necessary because of lookahead '}' above */ - } else if (x == DUK_ASC_RCURLY) { - if (digits > DUK__MAX_RE_QUANT_DIGITS) { - goto invalid_quantifier; - } - if (digits == 0) { - goto invalid_quantifier; - } - if (val2 != DUK_RE_QUANTIFIER_INFINITE) { - /* val2 = min count, val1 = max count */ - out_token->qmin = val2; - out_token->qmax = val1; - } else { - /* val1 = count */ - out_token->qmin = val1; - out_token->qmax = val1; - } - DUK__ADVANCECHARS(lex_ctx, 1); - break; - } else { - goto invalid_quantifier; - } - } - if (DUK__L0() == DUK_ASC_QUESTION) { - out_token->greedy = 0; - DUK__ADVANCECHARS(lex_ctx, 1); - } else { - out_token->greedy = 1; - } - advtok = DUK__ADVTOK(0, DUK_RETOK_QUANTIFIER); - break; - invalid_quantifier: -#if defined(DUK_USE_ES6_REGEXP_SYNTAX) - /* Failed to match the quantifier, restore lexer and parse - * opening brace as a literal. - */ - DUK_LEXER_SETPOINT(lex_ctx, &lex_pt); - advtok = DUK__ADVTOK(1, DUK_RETOK_ATOM_CHAR); - out_token->num = DUK_ASC_LCURLY; -#else - goto fail_quantifier; -#endif - break; - } - case DUK_ASC_PERIOD: { - advtok = DUK__ADVTOK(1, DUK_RETOK_ATOM_PERIOD); - break; - } - case DUK_ASC_BACKSLASH: { - /* The E5.1 specification does not seem to allow IdentifierPart characters - * to be used as identity escapes. Unfortunately this includes '$', which - * cannot be escaped as '\$'; it needs to be escaped e.g. as '\u0024'. - * Many other implementations (including V8 and Rhino, for instance) do - * accept '\$' as a valid identity escape, which is quite pragmatic, and - * ES2015 Annex B relaxes the rules to allow these (and other) real world forms. - */ - - advtok = DUK__ADVTOK(2, DUK_RETOK_ATOM_CHAR); /* default: char escape (two chars) */ - if (y == DUK_ASC_LC_B) { - advtok = DUK__ADVTOK(2, DUK_RETOK_ASSERT_WORD_BOUNDARY); - } else if (y == DUK_ASC_UC_B) { - advtok = DUK__ADVTOK(2, DUK_RETOK_ASSERT_NOT_WORD_BOUNDARY); - } else if (y == DUK_ASC_LC_F) { - out_token->num = 0x000c; - } else if (y == DUK_ASC_LC_N) { - out_token->num = 0x000a; - } else if (y == DUK_ASC_LC_T) { - out_token->num = 0x0009; - } else if (y == DUK_ASC_LC_R) { - out_token->num = 0x000d; - } else if (y == DUK_ASC_LC_V) { - out_token->num = 0x000b; - } else if (y == DUK_ASC_LC_C) { - x = DUK__L2(); - if ((x >= DUK_ASC_LC_A && x <= DUK_ASC_LC_Z) || (x >= DUK_ASC_UC_A && x <= DUK_ASC_UC_Z)) { - out_token->num = (duk_uint32_t) (x % 32); - advtok = DUK__ADVTOK(3, DUK_RETOK_ATOM_CHAR); - } else { - goto fail_escape; - } - } else if (y == DUK_ASC_LC_X || y == DUK_ASC_LC_U) { - /* The token value is the Unicode codepoint without - * it being decode into surrogate pair characters - * here. The \u{H+} is only allowed in Unicode mode - * which we don't support yet. - */ - out_token->num = (duk_uint32_t) duk__lexer_parse_escape(lex_ctx, 0 /*allow_es6*/); - advtok = DUK__ADVTOK(0, DUK_RETOK_ATOM_CHAR); - } else if (y == DUK_ASC_LC_D) { - advtok = DUK__ADVTOK(2, DUK_RETOK_ATOM_DIGIT); - } else if (y == DUK_ASC_UC_D) { - advtok = DUK__ADVTOK(2, DUK_RETOK_ATOM_NOT_DIGIT); - } else if (y == DUK_ASC_LC_S) { - advtok = DUK__ADVTOK(2, DUK_RETOK_ATOM_WHITE); - } else if (y == DUK_ASC_UC_S) { - advtok = DUK__ADVTOK(2, DUK_RETOK_ATOM_NOT_WHITE); - } else if (y == DUK_ASC_LC_W) { - advtok = DUK__ADVTOK(2, DUK_RETOK_ATOM_WORD_CHAR); - } else if (y == DUK_ASC_UC_W) { - advtok = DUK__ADVTOK(2, DUK_RETOK_ATOM_NOT_WORD_CHAR); - } else if (DUK__ISDIGIT(y)) { - /* E5 Section 15.10.2.11 */ - if (y == DUK_ASC_0) { - if (DUK__ISDIGIT(DUK__L2())) { - goto fail_escape; - } - out_token->num = 0x0000; - advtok = DUK__ADVTOK(2, DUK_RETOK_ATOM_CHAR); - } else { - /* XXX: shared parsing? */ - duk_uint32_t val = 0; - duk_small_int_t i; - for (i = 0;; i++) { - if (i >= DUK__MAX_RE_DECESC_DIGITS) { - goto fail_escape; - } - DUK__ADVANCECHARS(lex_ctx, 1); /* eat backslash on entry */ - x = DUK__L0(); - if (!DUK__ISDIGIT(x)) { - break; - } - val = val * 10 + (duk_uint32_t) duk__hexval(x); - } - /* DUK__L0() cannot be a digit, because the loop doesn't terminate if it is */ - advtok = DUK__ADVTOK(0, DUK_RETOK_ATOM_BACKREFERENCE); - out_token->num = val; - } -#if defined(DUK_USE_ES6_REGEXP_SYNTAX) - } else if (y >= 0) { - /* For ES2015 Annex B, accept any source character as identity - * escape except 'c' which is used for control characters. - * http://www.ecma-international.org/ecma-262/6.0/#sec-regular-expressions-patterns - * Careful not to match end-of-buffer (<0) here. - * This is not yet full ES2015 Annex B because cases above - * (like hex escape) won't backtrack. - */ - DUK_ASSERT(y != DUK_ASC_LC_C); /* covered above */ -#else /* DUK_USE_ES6_REGEXP_SYNTAX */ - } else if ((y >= 0 && !duk_unicode_is_identifier_part(y)) || y == DUK_UNICODE_CP_ZWNJ || y == DUK_UNICODE_CP_ZWJ) { - /* For ES5.1 identity escapes are not allowed for identifier - * parts. This conflicts with a lot of real world code as this - * doesn't e.g. allow escaping a dollar sign as /\$/, see - * test-regexp-identity-escape-dollar.js. - */ -#endif /* DUK_USE_ES6_REGEXP_SYNTAX */ - out_token->num = (duk_uint32_t) y; - } else { - goto fail_escape; - } - break; - } - case DUK_ASC_LPAREN: { - /* XXX: naming is inconsistent: ATOM_END_GROUP ends an ASSERT_START_LOOKAHEAD */ - - if (y == DUK_ASC_QUESTION) { - if (DUK__L2() == DUK_ASC_EQUALS) { - /* (?= */ - advtok = DUK__ADVTOK(3, DUK_RETOK_ASSERT_START_POS_LOOKAHEAD); - } else if (DUK__L2() == DUK_ASC_EXCLAMATION) { - /* (?! */ - advtok = DUK__ADVTOK(3, DUK_RETOK_ASSERT_START_NEG_LOOKAHEAD); - } else if (DUK__L2() == DUK_ASC_COLON) { - /* (?: */ - advtok = DUK__ADVTOK(3, DUK_RETOK_ATOM_START_NONCAPTURE_GROUP); - } else { - goto fail_group; - } - } else { - /* ( */ - advtok = DUK__ADVTOK(1, DUK_RETOK_ATOM_START_CAPTURE_GROUP); - } - break; - } - case DUK_ASC_RPAREN: { - advtok = DUK__ADVTOK(1, DUK_RETOK_ATOM_END_GROUP); - break; - } - case DUK_ASC_LBRACKET: { - /* - * To avoid creating a heavy intermediate value for the list of ranges, - * only the start token ('[' or '[^') is parsed here. The regexp - * compiler parses the ranges itself. - */ - - /* XXX: with DUK_USE_ES6_REGEXP_SYNTAX we should allow left bracket - * literal too, but it's not easy to parse without backtracking. - */ - - advtok = DUK__ADVTOK(1, DUK_RETOK_ATOM_START_CHARCLASS); - if (y == DUK_ASC_CARET) { - advtok = DUK__ADVTOK(2, DUK_RETOK_ATOM_START_CHARCLASS_INVERTED); - } - break; - } -#if !defined(DUK_USE_ES6_REGEXP_SYNTAX) - case DUK_ASC_RCURLY: - case DUK_ASC_RBRACKET: { - /* Although these could be parsed as PatternCharacters unambiguously (here), - * E5 Section 15.10.1 grammar explicitly forbids these as PatternCharacters. - */ - goto fail_invalid_char; - break; - } -#endif - case -1: { - /* EOF */ - advtok = DUK__ADVTOK(0, DUK_TOK_EOF); - break; - } - default: { - /* PatternCharacter, all excluded characters are matched by cases above */ - advtok = DUK__ADVTOK(1, DUK_RETOK_ATOM_CHAR); - out_token->num = (duk_uint32_t) x; - break; - } - } - - /* - * Shared exit path - */ - - DUK__ADVANCEBYTES(lex_ctx, advtok >> 8); - out_token->t = advtok & 0xff; - return; - -fail_token_limit: - DUK_ERROR_RANGE(lex_ctx->thr, DUK_STR_TOKEN_LIMIT); - DUK_WO_NORETURN(return;); - -fail_escape: - DUK_ERROR_SYNTAX(lex_ctx->thr, DUK_STR_INVALID_REGEXP_ESCAPE); - DUK_WO_NORETURN(return;); - -fail_group: - DUK_ERROR_SYNTAX(lex_ctx->thr, DUK_STR_INVALID_REGEXP_GROUP); - DUK_WO_NORETURN(return;); - -#if !defined(DUK_USE_ES6_REGEXP_SYNTAX) -fail_invalid_char: - DUK_ERROR_SYNTAX(lex_ctx->thr, DUK_STR_INVALID_REGEXP_CHARACTER); - DUK_WO_NORETURN(return;); - -fail_quantifier: - DUK_ERROR_SYNTAX(lex_ctx->thr, DUK_STR_INVALID_QUANTIFIER); - DUK_WO_NORETURN(return;); -#endif -} - -/* - * Special parser for character classes; calls callback for every - * range parsed and returns the number of ranges present. - */ - -/* XXX: this duplicates functionality in duk_regexp.c where a similar loop is - * required anyway. We could use that BUT we need to update the regexp compiler - * 'nranges' too. Work this out a bit more cleanly to save space. - */ - -/* XXX: the handling of character range detection is a bit convoluted. - * Try to simplify and make smaller. - */ - -/* XXX: logic for handling character ranges is now incorrect, it will accept - * e.g. [\d-z] whereas it should croak from it? SMJS accepts this too, though. - * - * Needs a read through and a lot of additional tests. - */ - -DUK_LOCAL -void duk__emit_u16_direct_ranges(duk_lexer_ctx *lex_ctx, - duk_re_range_callback gen_range, - void *userdata, - const duk_uint16_t *ranges, - duk_small_int_t num) { - const duk_uint16_t *ranges_end; - - DUK_UNREF(lex_ctx); - - ranges_end = ranges + num; - while (ranges < ranges_end) { - /* mark range 'direct', bypass canonicalization (see Wiki) */ - gen_range(userdata, (duk_codepoint_t) ranges[0], (duk_codepoint_t) ranges[1], 1); - ranges += 2; - } -} - -DUK_INTERNAL void duk_lexer_parse_re_ranges(duk_lexer_ctx *lex_ctx, duk_re_range_callback gen_range, void *userdata) { - duk_codepoint_t start = -1; - duk_codepoint_t ch; - duk_codepoint_t x; - duk_bool_t dash = 0; - duk_small_uint_t adv = 0; - - DUK_DD(DUK_DDPRINT("parsing regexp ranges")); - - for (;;) { - DUK__ADVANCECHARS(lex_ctx, adv); - adv = 1; - - x = DUK__L0(); - - ch = -1; /* not strictly necessary, but avoids "uninitialized variable" warnings */ - DUK_UNREF(ch); - - if (x < 0) { - goto fail_unterm_charclass; - } else if (x == DUK_ASC_RBRACKET) { - if (start >= 0) { - gen_range(userdata, start, start, 0); - } - DUK__ADVANCECHARS(lex_ctx, 1); /* eat ']' before finishing */ - break; - } else if (x == DUK_ASC_MINUS) { - if (start >= 0 && !dash && DUK__L1() != DUK_ASC_RBRACKET) { - /* '-' as a range indicator */ - dash = 1; - continue; - } else { - /* '-' verbatim */ - ch = x; - } - } else if (x == DUK_ASC_BACKSLASH) { - /* - * The escapes are same as outside a character class, except that \b has a - * different meaning, and \B and backreferences are prohibited (see E5 - * Section 15.10.2.19). However, it's difficult to share code because we - * handle e.g. "\n" very differently: here we generate a single character - * range for it. - */ - - /* XXX: ES2015 surrogate pair handling. */ - - x = DUK__L1(); - - adv = 2; - - if (x == DUK_ASC_LC_B) { - /* Note: '\b' in char class is different than outside (assertion), - * '\B' is not allowed and is caught by the duk_unicode_is_identifier_part() - * check below. - */ - ch = 0x0008; - } else if (x == DUK_ASC_LC_F) { - ch = 0x000c; - } else if (x == DUK_ASC_LC_N) { - ch = 0x000a; - } else if (x == DUK_ASC_LC_T) { - ch = 0x0009; - } else if (x == DUK_ASC_LC_R) { - ch = 0x000d; - } else if (x == DUK_ASC_LC_V) { - ch = 0x000b; - } else if (x == DUK_ASC_LC_C) { - x = DUK__L2(); - adv = 3; - if ((x >= DUK_ASC_LC_A && x <= DUK_ASC_LC_Z) || (x >= DUK_ASC_UC_A && x <= DUK_ASC_UC_Z)) { - ch = (x % 32); - } else { - goto fail_escape; - } - } else if (x == DUK_ASC_LC_X || x == DUK_ASC_LC_U) { - /* The \u{H+} form is only allowed in Unicode mode which - * we don't support yet. - */ - ch = duk__lexer_parse_escape(lex_ctx, 0 /*allow_es6*/); - adv = 0; - } else if (x == DUK_ASC_LC_D) { - duk__emit_u16_direct_ranges(lex_ctx, - gen_range, - userdata, - duk_unicode_re_ranges_digit, - sizeof(duk_unicode_re_ranges_digit) / sizeof(duk_uint16_t)); - ch = -1; - } else if (x == DUK_ASC_UC_D) { - duk__emit_u16_direct_ranges(lex_ctx, - gen_range, - userdata, - duk_unicode_re_ranges_not_digit, - sizeof(duk_unicode_re_ranges_not_digit) / sizeof(duk_uint16_t)); - ch = -1; - } else if (x == DUK_ASC_LC_S) { - duk__emit_u16_direct_ranges(lex_ctx, - gen_range, - userdata, - duk_unicode_re_ranges_white, - sizeof(duk_unicode_re_ranges_white) / sizeof(duk_uint16_t)); - ch = -1; - } else if (x == DUK_ASC_UC_S) { - duk__emit_u16_direct_ranges(lex_ctx, - gen_range, - userdata, - duk_unicode_re_ranges_not_white, - sizeof(duk_unicode_re_ranges_not_white) / sizeof(duk_uint16_t)); - ch = -1; - } else if (x == DUK_ASC_LC_W) { - duk__emit_u16_direct_ranges(lex_ctx, - gen_range, - userdata, - duk_unicode_re_ranges_wordchar, - sizeof(duk_unicode_re_ranges_wordchar) / sizeof(duk_uint16_t)); - ch = -1; - } else if (x == DUK_ASC_UC_W) { - duk__emit_u16_direct_ranges(lex_ctx, - gen_range, - userdata, - duk_unicode_re_ranges_not_wordchar, - sizeof(duk_unicode_re_ranges_not_wordchar) / sizeof(duk_uint16_t)); - ch = -1; - } else if (DUK__ISDIGIT(x)) { - /* DecimalEscape, only \0 is allowed, no leading - * zeroes are allowed. - * - * ES2015 Annex B also allows (maximal match) legacy - * octal escapes up to \377 and \8 and \9 are - * accepted as literal '8' and '9', also in strict mode. - */ - -#if defined(DUK_USE_ES6_REGEXP_SYNTAX) - ch = duk__lexer_parse_legacy_octal(lex_ctx, &adv, 0 /*reject_annex_b*/); - DUK_ASSERT(ch >= 0); /* no rejections */ -#else - if (x == DUK_ASC_0 && !DUK__ISDIGIT(DUK__L2())) { - ch = 0x0000; - } else { - goto fail_escape; - } -#endif -#if defined(DUK_USE_ES6_REGEXP_SYNTAX) - } else if (x >= 0) { - /* IdentityEscape: ES2015 Annex B allows almost all - * source characters here. Match anything except - * EOF here. - */ - ch = x; -#else /* DUK_USE_ES6_REGEXP_SYNTAX */ - } else if (!duk_unicode_is_identifier_part(x)) { - /* IdentityEscape: ES5.1 doesn't allow identity escape - * for identifier part characters, which conflicts with - * some real world code. For example, it doesn't allow - * /[\$]/ which is awkward. - */ - ch = x; -#endif /* DUK_USE_ES6_REGEXP_SYNTAX */ - } else { - goto fail_escape; - } - } else { - /* character represents itself */ - ch = x; - } - - /* ch is a literal character here or -1 if parsed entity was - * an escape such as "\s". - */ - - if (ch < 0) { - /* multi-character sets not allowed as part of ranges, see - * E5 Section 15.10.2.15, abstract operation CharacterRange. - */ - if (start >= 0) { - if (dash) { - goto fail_range; - } else { - gen_range(userdata, start, start, 0); - start = -1; - /* dash is already 0 */ - } - } - } else { - if (start >= 0) { - if (dash) { - if (start > ch) { - goto fail_range; - } - gen_range(userdata, start, ch, 0); - start = -1; - dash = 0; - } else { - gen_range(userdata, start, start, 0); - start = ch; - /* dash is already 0 */ - } - } else { - start = ch; - } - } - } - - return; - -fail_escape: - DUK_ERROR_SYNTAX(lex_ctx->thr, DUK_STR_INVALID_REGEXP_ESCAPE); - DUK_WO_NORETURN(return;); - -fail_range: - DUK_ERROR_SYNTAX(lex_ctx->thr, DUK_STR_INVALID_RANGE); - DUK_WO_NORETURN(return;); - -fail_unterm_charclass: - DUK_ERROR_SYNTAX(lex_ctx->thr, DUK_STR_UNTERMINATED_CHARCLASS); - DUK_WO_NORETURN(return;); -} - -#endif /* DUK_USE_REGEXP_SUPPORT */ - -/* automatic undefs */ -#undef DUK__ADVANCEBYTES -#undef DUK__ADVANCECHARS -#undef DUK__ADVTOK -#undef DUK__APPENDBUFFER -#undef DUK__APPENDBUFFER_ASCII -#undef DUK__INITBUFFER -#undef DUK__ISDIGIT -#undef DUK__ISDIGIT03 -#undef DUK__ISDIGIT47 -#undef DUK__ISHEXDIGIT -#undef DUK__ISOCTDIGIT -#undef DUK__L0 -#undef DUK__L1 -#undef DUK__L2 -#undef DUK__L3 -#undef DUK__L4 -#undef DUK__L5 -#undef DUK__LOOKUP -#undef DUK__MAX_RE_DECESC_DIGITS -#undef DUK__MAX_RE_QUANT_DIGITS -#line 1 "duk_numconv.c" -/* - * Number-to-string and string-to-number conversions. - * - * Slow path number-to-string and string-to-number conversion is based on - * a Dragon4 variant, with fast paths for small integers. Big integer - * arithmetic is needed for guaranteeing that the conversion is correct - * and uses a minimum number of digits. The big number arithmetic has a - * fixed maximum size and does not require dynamic allocations. - * - * See: doc/number-conversion.rst. - */ - -/* #include duk_internal.h -> already included */ - -#define DUK__IEEE_DOUBLE_EXP_BIAS 1023 -#define DUK__IEEE_DOUBLE_EXP_MIN (-1022) /* biased exp == 0 -> denormal, exp -1022 */ - -#define DUK__DIGITCHAR(x) duk_lc_digits[(x)] - -/* - * Tables generated with util/gennumdigits.py. - * - * duk__str2num_digits_for_radix indicates, for each radix, how many input - * digits should be considered significant for string-to-number conversion. - * The input is also padded to this many digits to give the Dragon4 - * conversion enough (apparent) precision to work with. - * - * duk__str2num_exp_limits indicates, for each radix, the radix-specific - * minimum/maximum exponent values (for a Dragon4 integer mantissa) - * below and above which the number is guaranteed to underflow to zero - * or overflow to Infinity. This allows parsing to keep bigint values - * bounded. - */ - -DUK_LOCAL const duk_uint8_t duk__str2num_digits_for_radix[] = { - 69, 44, 35, 30, 27, 25, 23, 22, 20, 20, /* 2 to 11 */ - 20, 19, 19, 18, 18, 17, 17, 17, 16, 16, /* 12 to 21 */ - 16, 16, 16, 15, 15, 15, 15, 15, 15, 14, /* 22 to 31 */ - 14, 14, 14, 14, 14 /* 31 to 36 */ -}; - -typedef struct { - duk_int16_t upper; - duk_int16_t lower; -} duk__exp_limits; - -DUK_LOCAL const duk__exp_limits duk__str2num_exp_limits[] = { - { 957, -1147 }, { 605, -725 }, { 479, -575 }, { 414, -496 }, { 372, -446 }, { 342, -411 }, { 321, -384 }, - { 304, -364 }, { 291, -346 }, { 279, -334 }, { 268, -323 }, { 260, -312 }, { 252, -304 }, { 247, -296 }, - { 240, -289 }, { 236, -283 }, { 231, -278 }, { 227, -273 }, { 223, -267 }, { 220, -263 }, { 216, -260 }, - { 213, -256 }, { 210, -253 }, { 208, -249 }, { 205, -246 }, { 203, -244 }, { 201, -241 }, { 198, -239 }, - { 196, -237 }, { 195, -234 }, { 193, -232 }, { 191, -230 }, { 190, -228 }, { 188, -226 }, { 187, -225 }, -}; - -/* - * Limited functionality bigint implementation. - * - * Restricted to non-negative numbers with less than 32 * DUK__BI_MAX_PARTS bits, - * with the caller responsible for ensuring this is never exceeded. No memory - * allocation (except stack) is needed for bigint computation. Operations - * have been tailored for number conversion needs. - * - * Argument order is "assignment order", i.e. target first, then arguments: - * x <- y * z --> duk__bi_mul(x, y, z); - */ - -/* This upper value has been experimentally determined; debug build will check - * bigint size with assertions. - */ -#define DUK__BI_MAX_PARTS 37 /* 37x32 = 1184 bits */ - -#if defined(DUK_USE_DEBUG_LEVEL) && (DUK_USE_DEBUG_LEVEL >= 2) -#define DUK__BI_PRINT(name, x) duk__bi_print((name), (x)) -#else -#define DUK__BI_PRINT(name, x) -#endif - -/* Current size is about 152 bytes. */ -typedef struct { - duk_small_int_t n; - duk_uint32_t v[DUK__BI_MAX_PARTS]; /* low to high */ -} duk__bigint; - -#if defined(DUK_USE_DEBUG_LEVEL) && (DUK_USE_DEBUG_LEVEL >= 2) -DUK_LOCAL void duk__bi_print(const char *name, duk__bigint *x) { - /* Overestimate required size; debug code so not critical to be tight. */ - char buf[DUK__BI_MAX_PARTS * 9 + 64]; - char *p = buf; - duk_small_int_t i; - - /* No NUL term checks in this debug code. */ - p += DUK_SPRINTF(p, "%p n=%ld", (void *) x, (long) x->n); - if (x->n == 0) { - p += DUK_SPRINTF(p, " 0"); - } - for (i = x->n - 1; i >= 0; i--) { - p += DUK_SPRINTF(p, " %08lx", (unsigned long) x->v[i]); - } - - DUK_DDD(DUK_DDDPRINT("%s: %s", (const char *) name, (const char *) buf)); -} -#endif - -#if defined(DUK_USE_ASSERTIONS) -DUK_LOCAL duk_small_int_t duk__bi_is_valid(duk__bigint *x) { - return (duk_small_int_t) (((x->n >= 0) && (x->n <= DUK__BI_MAX_PARTS)) /* is valid size */ && - ((x->n == 0) || (x->v[x->n - 1] != 0)) /* is normalized */); -} -#endif - -DUK_LOCAL void duk__bi_normalize(duk__bigint *x) { - duk_small_int_t i; - - for (i = x->n - 1; i >= 0; i--) { - if (x->v[i] != 0) { - break; - } - } - - /* Note: if 'x' is zero, x->n becomes 0 here */ - x->n = i + 1; - DUK_ASSERT(duk__bi_is_valid(x)); -} - -/* x <- y */ -DUK_LOCAL void duk__bi_copy(duk__bigint *x, duk__bigint *y) { - duk_small_int_t n; - - n = y->n; - x->n = n; - /* No need to special case n == 0. */ - duk_memcpy((void *) x->v, (const void *) y->v, (size_t) (sizeof(duk_uint32_t) * (size_t) n)); -} - -DUK_LOCAL void duk__bi_set_small(duk__bigint *x, duk_uint32_t v) { - if (v == 0U) { - x->n = 0; - } else { - x->n = 1; - x->v[0] = v; - } - DUK_ASSERT(duk__bi_is_valid(x)); -} - -/* Return value: <0 <=> x < y - * 0 <=> x == y - * >0 <=> x > y - */ -DUK_LOCAL int duk__bi_compare(duk__bigint *x, duk__bigint *y) { - duk_small_int_t i, nx, ny; - duk_uint32_t tx, ty; - - DUK_ASSERT(duk__bi_is_valid(x)); - DUK_ASSERT(duk__bi_is_valid(y)); - - nx = x->n; - ny = y->n; - if (nx > ny) { - goto ret_gt; - } - if (nx < ny) { - goto ret_lt; - } - for (i = nx - 1; i >= 0; i--) { - tx = x->v[i]; - ty = y->v[i]; - - if (tx > ty) { - goto ret_gt; - } - if (tx < ty) { - goto ret_lt; - } - } - - return 0; - -ret_gt: - return 1; - -ret_lt: - return -1; -} - -/* x <- y + z */ -#if defined(DUK_USE_64BIT_OPS) -DUK_LOCAL void duk__bi_add(duk__bigint *x, duk__bigint *y, duk__bigint *z) { - duk_uint64_t tmp; - duk_small_int_t i, ny, nz; - - DUK_ASSERT(duk__bi_is_valid(y)); - DUK_ASSERT(duk__bi_is_valid(z)); - - if (z->n > y->n) { - duk__bigint *t; - t = y; - y = z; - z = t; - } - DUK_ASSERT(y->n >= z->n); - - ny = y->n; - nz = z->n; - tmp = 0U; - for (i = 0; i < ny; i++) { - DUK_ASSERT(i < DUK__BI_MAX_PARTS); - tmp += y->v[i]; - if (i < nz) { - tmp += z->v[i]; - } - x->v[i] = (duk_uint32_t) (tmp & 0xffffffffUL); - tmp = tmp >> 32; - } - if (tmp != 0U) { - DUK_ASSERT(i < DUK__BI_MAX_PARTS); - x->v[i++] = (duk_uint32_t) tmp; - } - x->n = i; - DUK_ASSERT(x->n <= DUK__BI_MAX_PARTS); - - /* no need to normalize */ - DUK_ASSERT(duk__bi_is_valid(x)); -} -#else /* DUK_USE_64BIT_OPS */ -DUK_LOCAL void duk__bi_add(duk__bigint *x, duk__bigint *y, duk__bigint *z) { - duk_uint32_t carry, tmp1, tmp2; - duk_small_int_t i, ny, nz; - - DUK_ASSERT(duk__bi_is_valid(y)); - DUK_ASSERT(duk__bi_is_valid(z)); - - if (z->n > y->n) { - duk__bigint *t; - t = y; - y = z; - z = t; - } - DUK_ASSERT(y->n >= z->n); - - ny = y->n; - nz = z->n; - carry = 0U; - for (i = 0; i < ny; i++) { - /* Carry is detected based on wrapping which relies on exact 32-bit - * types. - */ - DUK_ASSERT(i < DUK__BI_MAX_PARTS); - tmp1 = y->v[i]; - tmp2 = tmp1; - if (i < nz) { - tmp2 += z->v[i]; - } - - /* Careful with carry condition: - * - If carry not added: 0x12345678 + 0 + 0xffffffff = 0x12345677 (< 0x12345678) - * - If carry added: 0x12345678 + 1 + 0xffffffff = 0x12345678 (== 0x12345678) - */ - if (carry) { - tmp2++; - carry = (tmp2 <= tmp1 ? 1U : 0U); - } else { - carry = (tmp2 < tmp1 ? 1U : 0U); - } - - x->v[i] = tmp2; - } - if (carry) { - DUK_ASSERT(i < DUK__BI_MAX_PARTS); - DUK_ASSERT(carry == 1U); - x->v[i++] = carry; - } - x->n = i; - DUK_ASSERT(x->n <= DUK__BI_MAX_PARTS); - - /* no need to normalize */ - DUK_ASSERT(duk__bi_is_valid(x)); -} -#endif /* DUK_USE_64BIT_OPS */ - -/* x <- y + z */ -DUK_LOCAL void duk__bi_add_small(duk__bigint *x, duk__bigint *y, duk_uint32_t z) { - duk__bigint tmp; - - DUK_ASSERT(duk__bi_is_valid(y)); - - /* XXX: this could be optimized; there is only one call site now though */ - duk__bi_set_small(&tmp, z); - duk__bi_add(x, y, &tmp); - - DUK_ASSERT(duk__bi_is_valid(x)); -} - -#if 0 /* unused */ -/* x <- x + y, use t as temp */ -DUK_LOCAL void duk__bi_add_copy(duk__bigint *x, duk__bigint *y, duk__bigint *t) { - duk__bi_add(t, x, y); - duk__bi_copy(x, t); -} -#endif - -/* x <- y - z, require x >= y => z >= 0, i.e. y >= z */ -#if defined(DUK_USE_64BIT_OPS) -DUK_LOCAL void duk__bi_sub(duk__bigint *x, duk__bigint *y, duk__bigint *z) { - duk_small_int_t i, ny, nz; - duk_uint32_t ty, tz; - duk_int64_t tmp; - - DUK_ASSERT(duk__bi_is_valid(y)); - DUK_ASSERT(duk__bi_is_valid(z)); - DUK_ASSERT(duk__bi_compare(y, z) >= 0); - DUK_ASSERT(y->n >= z->n); - - ny = y->n; - nz = z->n; - tmp = 0; - for (i = 0; i < ny; i++) { - ty = y->v[i]; - if (i < nz) { - tz = z->v[i]; - } else { - tz = 0; - } - tmp = (duk_int64_t) ty - (duk_int64_t) tz + tmp; - x->v[i] = (duk_uint32_t) ((duk_uint64_t) tmp & 0xffffffffUL); - tmp = tmp >> 32; /* 0 or -1 */ - } - DUK_ASSERT(tmp == 0); - - x->n = i; - duk__bi_normalize(x); /* need to normalize, may even cancel to 0 */ - DUK_ASSERT(duk__bi_is_valid(x)); -} -#else -DUK_LOCAL void duk__bi_sub(duk__bigint *x, duk__bigint *y, duk__bigint *z) { - duk_small_int_t i, ny, nz; - duk_uint32_t tmp1, tmp2, borrow; - - DUK_ASSERT(duk__bi_is_valid(y)); - DUK_ASSERT(duk__bi_is_valid(z)); - DUK_ASSERT(duk__bi_compare(y, z) >= 0); - DUK_ASSERT(y->n >= z->n); - - ny = y->n; - nz = z->n; - borrow = 0U; - for (i = 0; i < ny; i++) { - /* Borrow is detected based on wrapping which relies on exact 32-bit - * types. - */ - tmp1 = y->v[i]; - tmp2 = tmp1; - if (i < nz) { - tmp2 -= z->v[i]; - } - - /* Careful with borrow condition: - * - If borrow not subtracted: 0x12345678 - 0 - 0xffffffff = 0x12345679 (> 0x12345678) - * - If borrow subtracted: 0x12345678 - 1 - 0xffffffff = 0x12345678 (== 0x12345678) - */ - if (borrow) { - tmp2--; - borrow = (tmp2 >= tmp1 ? 1U : 0U); - } else { - borrow = (tmp2 > tmp1 ? 1U : 0U); - } - - x->v[i] = tmp2; - } - DUK_ASSERT(borrow == 0U); - - x->n = i; - duk__bi_normalize(x); /* need to normalize, may even cancel to 0 */ - DUK_ASSERT(duk__bi_is_valid(x)); -} -#endif - -#if 0 /* unused */ -/* x <- y - z */ -DUK_LOCAL void duk__bi_sub_small(duk__bigint *x, duk__bigint *y, duk_uint32_t z) { - duk__bigint tmp; - - DUK_ASSERT(duk__bi_is_valid(y)); - - /* XXX: this could be optimized */ - duk__bi_set_small(&tmp, z); - duk__bi_sub(x, y, &tmp); - - DUK_ASSERT(duk__bi_is_valid(x)); -} -#endif - -/* x <- x - y, use t as temp */ -DUK_LOCAL void duk__bi_sub_copy(duk__bigint *x, duk__bigint *y, duk__bigint *t) { - duk__bi_sub(t, x, y); - duk__bi_copy(x, t); -} - -/* x <- y * z */ -DUK_LOCAL void duk__bi_mul(duk__bigint *x, duk__bigint *y, duk__bigint *z) { - duk_small_int_t i, j, nx, nz; - - DUK_ASSERT(duk__bi_is_valid(y)); - DUK_ASSERT(duk__bi_is_valid(z)); - - nx = y->n + z->n; /* max possible */ - DUK_ASSERT(nx <= DUK__BI_MAX_PARTS); - - if (nx == 0) { - /* Both inputs are zero; cases where only one is zero can go - * through main algorithm. - */ - x->n = 0; - return; - } - - duk_memzero((void *) x->v, (size_t) (sizeof(duk_uint32_t) * (size_t) nx)); - x->n = nx; - - nz = z->n; - for (i = 0; i < y->n; i++) { -#if defined(DUK_USE_64BIT_OPS) - duk_uint64_t tmp = 0U; - for (j = 0; j < nz; j++) { - tmp += (duk_uint64_t) y->v[i] * (duk_uint64_t) z->v[j] + x->v[i + j]; - x->v[i + j] = (duk_uint32_t) (tmp & 0xffffffffUL); - tmp = tmp >> 32; - } - if (tmp > 0) { - DUK_ASSERT(i + j < nx); - DUK_ASSERT(i + j < DUK__BI_MAX_PARTS); - DUK_ASSERT(x->v[i + j] == 0U); - x->v[i + j] = (duk_uint32_t) tmp; - } -#else - /* - * Multiply + add + carry for 32-bit components using only 16x16->32 - * multiplies and carry detection based on unsigned overflow. - * - * 1st mult, 32-bit: (A*2^16 + B) - * 2nd mult, 32-bit: (C*2^16 + D) - * 3rd add, 32-bit: E - * 4th add, 32-bit: F - * - * (AC*2^16 + B) * (C*2^16 + D) + E + F - * = AC*2^32 + AD*2^16 + BC*2^16 + BD + E + F - * = AC*2^32 + (AD + BC)*2^16 + (BD + E + F) - * = AC*2^32 + AD*2^16 + BC*2^16 + (BD + E + F) - */ - duk_uint32_t a, b, c, d, e, f; - duk_uint32_t r, s, t; - - a = y->v[i]; - b = a & 0xffffUL; - a = a >> 16; - - f = 0; - for (j = 0; j < nz; j++) { - c = z->v[j]; - d = c & 0xffffUL; - c = c >> 16; - e = x->v[i + j]; - - /* build result as: (r << 32) + s: start with (BD + E + F) */ - r = 0; - s = b * d; - - /* add E */ - t = s + e; - if (t < s) { - r++; - } /* carry */ - s = t; - - /* add F */ - t = s + f; - if (t < s) { - r++; - } /* carry */ - s = t; - - /* add BC*2^16 */ - t = b * c; - r += (t >> 16); - t = s + ((t & 0xffffUL) << 16); - if (t < s) { - r++; - } /* carry */ - s = t; - - /* add AD*2^16 */ - t = a * d; - r += (t >> 16); - t = s + ((t & 0xffffUL) << 16); - if (t < s) { - r++; - } /* carry */ - s = t; - - /* add AC*2^32 */ - t = a * c; - r += t; - - DUK_DDD(DUK_DDDPRINT("ab=%08lx cd=%08lx ef=%08lx -> rs=%08lx %08lx", - (unsigned long) y->v[i], - (unsigned long) z->v[j], - (unsigned long) x->v[i + j], - (unsigned long) r, - (unsigned long) s)); - - x->v[i + j] = s; - f = r; - } - if (f > 0U) { - DUK_ASSERT(i + j < nx); - DUK_ASSERT(i + j < DUK__BI_MAX_PARTS); - DUK_ASSERT(x->v[i + j] == 0U); - x->v[i + j] = (duk_uint32_t) f; - } -#endif /* DUK_USE_64BIT_OPS */ - } - - duk__bi_normalize(x); - DUK_ASSERT(duk__bi_is_valid(x)); -} - -/* x <- y * z */ -DUK_LOCAL void duk__bi_mul_small(duk__bigint *x, duk__bigint *y, duk_uint32_t z) { - duk__bigint tmp; - - DUK_ASSERT(duk__bi_is_valid(y)); - - /* XXX: this could be optimized */ - duk__bi_set_small(&tmp, z); - duk__bi_mul(x, y, &tmp); - - DUK_ASSERT(duk__bi_is_valid(x)); -} - -/* x <- x * y, use t as temp */ -DUK_LOCAL void duk__bi_mul_copy(duk__bigint *x, duk__bigint *y, duk__bigint *t) { - duk__bi_mul(t, x, y); - duk__bi_copy(x, t); -} - -/* x <- x * y, use t as temp */ -DUK_LOCAL void duk__bi_mul_small_copy(duk__bigint *x, duk_uint32_t y, duk__bigint *t) { - duk__bi_mul_small(t, x, y); - duk__bi_copy(x, t); -} - -DUK_LOCAL int duk__bi_is_even(duk__bigint *x) { - DUK_ASSERT(duk__bi_is_valid(x)); - return (x->n == 0) || ((x->v[0] & 0x01) == 0); -} - -DUK_LOCAL int duk__bi_is_zero(duk__bigint *x) { - DUK_ASSERT(duk__bi_is_valid(x)); - return (x->n == 0); /* this is the case for normalized numbers */ -} - -/* Bigint is 2^52. Used to detect normalized IEEE double mantissa values - * which are at the lowest edge (next floating point value downwards has - * a different exponent). The lowest mantissa has the form: - * - * 1000........000 (52 zeroes; only "hidden bit" is set) - */ -DUK_LOCAL duk_small_int_t duk__bi_is_2to52(duk__bigint *x) { - DUK_ASSERT(duk__bi_is_valid(x)); - return (duk_small_int_t) (x->n == 2) && (x->v[0] == 0U) && (x->v[1] == (1U << (52 - 32))); -} - -/* x <- (1< 0); - r = y % 32; - duk_memzero((void *) x->v, sizeof(duk_uint32_t) * (size_t) n); - x->n = n; - x->v[n - 1] = (((duk_uint32_t) 1) << r); -} - -/* x <- b^y; use t1 and t2 as temps */ -DUK_LOCAL void duk__bi_exp_small(duk__bigint *x, duk_small_int_t b, duk_small_int_t y, duk__bigint *t1, duk__bigint *t2) { - /* Fast path the binary case */ - - DUK_ASSERT(x != t1 && x != t2 && t1 != t2); /* distinct bignums, easy mistake to make */ - DUK_ASSERT(b >= 0); - DUK_ASSERT(y >= 0); - - if (b == 2) { - duk__bi_twoexp(x, y); - return; - } - - /* http://en.wikipedia.org/wiki/Exponentiation_by_squaring */ - - DUK_DDD(DUK_DDDPRINT("exp_small: b=%ld, y=%ld", (long) b, (long) y)); - - duk__bi_set_small(x, 1); - duk__bi_set_small(t1, (duk_uint32_t) b); - for (;;) { - /* Loop structure ensures that we don't compute t1^2 unnecessarily - * on the final round, as that might create a bignum exceeding the - * current DUK__BI_MAX_PARTS limit. - */ - if (y & 0x01) { - duk__bi_mul_copy(x, t1, t2); - } - y = y >> 1; - if (y == 0) { - break; - } - duk__bi_mul_copy(t1, t1, t2); - } - - DUK__BI_PRINT("exp_small result", x); -} - -/* - * A Dragon4 number-to-string variant, based on: - * - * Guy L. Steele Jr., Jon L. White: "How to Print Floating-Point Numbers - * Accurately" - * - * Robert G. Burger, R. Kent Dybvig: "Printing Floating-Point Numbers - * Quickly and Accurately" - * - * The current algorithm is based on Figure 1 of the Burger-Dybvig paper, - * i.e. the base implementation without logarithm estimation speedups - * (these would increase code footprint considerably). Fixed-format output - * does not follow the suggestions in the paper; instead, we generate an - * extra digit and round-with-carry. - * - * The same algorithm is used for number parsing (with b=10 and B=2) - * by generating one extra digit and doing rounding manually. - * - * See doc/number-conversion.rst for limitations. - */ - -/* Maximum number of digits generated. */ -#define DUK__MAX_OUTPUT_DIGITS 1040 /* (Number.MAX_VALUE).toString(2).length == 1024, + slack */ - -/* Maximum number of characters in formatted value. */ -#define DUK__MAX_FORMATTED_LENGTH 1040 /* (-Number.MAX_VALUE).toString(2).length == 1025, + slack */ - -/* Number and (minimum) size of bigints in the nc_ctx structure. */ -#define DUK__NUMCONV_CTX_NUM_BIGINTS 7 -#define DUK__NUMCONV_CTX_BIGINTS_SIZE (sizeof(duk__bigint) * DUK__NUMCONV_CTX_NUM_BIGINTS) - -typedef struct { - /* Currently about 7*152 = 1064 bytes. The space for these - * duk__bigints is used also as a temporary buffer for generating - * the final string. This is a bit awkard; a union would be - * more correct. - */ - duk__bigint f, r, s, mp, mm, t1, t2; - - duk_small_int_t is_s2n; /* if 1, doing a string-to-number; else doing a number-to-string */ - duk_small_int_t is_fixed; /* if 1, doing a fixed format output (not free format) */ - duk_small_int_t req_digits; /* requested number of output digits; 0 = free-format */ - duk_small_int_t abs_pos; /* digit position is absolute, not relative */ - duk_small_int_t e; /* exponent for 'f' */ - duk_small_int_t b; /* input radix */ - duk_small_int_t B; /* output radix */ - duk_small_int_t k; /* see algorithm */ - duk_small_int_t low_ok; /* see algorithm */ - duk_small_int_t high_ok; /* see algorithm */ - duk_small_int_t unequal_gaps; /* m+ != m- (very rarely) */ - - /* Buffer used for generated digits, values are in the range [0,B-1]. */ - duk_uint8_t digits[DUK__MAX_OUTPUT_DIGITS]; - duk_small_int_t count; /* digit count */ -} duk__numconv_stringify_ctx; - -/* Note: computes with 'idx' in assertions, so caller beware. - * 'idx' is preincremented, i.e. '1' on first call, because it - * is more convenient for the caller. - */ -#define DUK__DRAGON4_OUTPUT_PREINC(nc_ctx, preinc_idx, x) \ - do { \ - DUK_ASSERT((preinc_idx) -1 >= 0); \ - DUK_ASSERT((preinc_idx) -1 < DUK__MAX_OUTPUT_DIGITS); \ - ((nc_ctx)->digits[(preinc_idx) -1]) = (duk_uint8_t) (x); \ - } while (0) - -DUK_LOCAL duk_size_t duk__dragon4_format_uint32(duk_uint8_t *buf, duk_uint32_t x, duk_small_int_t radix) { - duk_uint8_t *p; - duk_size_t len; - duk_small_int_t dig; - duk_uint32_t t; - - DUK_ASSERT(buf != NULL); - DUK_ASSERT(radix >= 2 && radix <= 36); - - /* A 32-bit unsigned integer formats to at most 32 digits (the - * worst case happens with radix == 2). Output the digits backwards, - * and use a memmove() to get them in the right place. - */ - - p = buf + 32; - for (;;) { - t = x / (duk_uint32_t) radix; - dig = (duk_small_int_t) (x - t * (duk_uint32_t) radix); - x = t; - - DUK_ASSERT(dig >= 0 && dig < 36); - *(--p) = DUK__DIGITCHAR(dig); - - if (x == 0) { - break; - } - } - len = (duk_size_t) ((buf + 32) - p); - - duk_memmove((void *) buf, (const void *) p, (size_t) len); - - return len; -} - -DUK_LOCAL void duk__dragon4_prepare(duk__numconv_stringify_ctx *nc_ctx) { - duk_small_int_t lowest_mantissa; - -#if 1 - /* Assume IEEE round-to-even, so that shorter encoding can be used - * when round-to-even would produce correct result. By removing - * this check (and having low_ok == high_ok == 0) the results would - * still be accurate but in some cases longer than necessary. - */ - if (duk__bi_is_even(&nc_ctx->f)) { - DUK_DDD(DUK_DDDPRINT("f is even")); - nc_ctx->low_ok = 1; - nc_ctx->high_ok = 1; - } else { - DUK_DDD(DUK_DDDPRINT("f is odd")); - nc_ctx->low_ok = 0; - nc_ctx->high_ok = 0; - } -#else - /* Note: not honoring round-to-even should work but now generates incorrect - * results. For instance, 1e23 serializes to "a000...", i.e. the first digit - * equals the radix (10). Scaling stops one step too early in this case. - * Don't know why this is the case, but since this code path is unused, it - * doesn't matter. - */ - nc_ctx->low_ok = 0; - nc_ctx->high_ok = 0; -#endif - - /* For string-to-number, pretend we never have the lowest mantissa as there - * is no natural "precision" for inputs. Having lowest_mantissa == 0, we'll - * fall into the base cases for both e >= 0 and e < 0. - */ - if (nc_ctx->is_s2n) { - lowest_mantissa = 0; - } else { - lowest_mantissa = duk__bi_is_2to52(&nc_ctx->f); - } - - nc_ctx->unequal_gaps = 0; - if (nc_ctx->e >= 0) { - /* exponent non-negative (and thus not minimum exponent) */ - - if (lowest_mantissa) { - /* (>= e 0) AND (= f (expt b (- p 1))) - * - * be <- (expt b e) == b^e - * be1 <- (* be b) == (expt b (+ e 1)) == b^(e+1) - * r <- (* f be1 2) == 2 * f * b^(e+1) [if b==2 -> f * b^(e+2)] - * s <- (* b 2) [if b==2 -> 4] - * m+ <- be1 == b^(e+1) - * m- <- be == b^e - * k <- 0 - * B <- B - * low_ok <- round - * high_ok <- round - */ - - DUK_DDD(DUK_DDDPRINT("non-negative exponent (not smallest exponent); " - "lowest mantissa value for this exponent -> " - "unequal gaps")); - - duk__bi_exp_small(&nc_ctx->mm, nc_ctx->b, nc_ctx->e, &nc_ctx->t1, &nc_ctx->t2); /* mm <- b^e */ - duk__bi_mul_small(&nc_ctx->mp, &nc_ctx->mm, (duk_uint32_t) nc_ctx->b); /* mp <- b^(e+1) */ - duk__bi_mul_small(&nc_ctx->t1, &nc_ctx->f, 2); - duk__bi_mul(&nc_ctx->r, &nc_ctx->t1, &nc_ctx->mp); /* r <- (2 * f) * b^(e+1) */ - duk__bi_set_small(&nc_ctx->s, (duk_uint32_t) (nc_ctx->b * 2)); /* s <- 2 * b */ - nc_ctx->unequal_gaps = 1; - } else { - /* (>= e 0) AND (not (= f (expt b (- p 1)))) - * - * be <- (expt b e) == b^e - * r <- (* f be 2) == 2 * f * b^e [if b==2 -> f * b^(e+1)] - * s <- 2 - * m+ <- be == b^e - * m- <- be == b^e - * k <- 0 - * B <- B - * low_ok <- round - * high_ok <- round - */ - - DUK_DDD(DUK_DDDPRINT("non-negative exponent (not smallest exponent); " - "not lowest mantissa for this exponent -> " - "equal gaps")); - - duk__bi_exp_small(&nc_ctx->mm, nc_ctx->b, nc_ctx->e, &nc_ctx->t1, &nc_ctx->t2); /* mm <- b^e */ - duk__bi_copy(&nc_ctx->mp, &nc_ctx->mm); /* mp <- b^e */ - duk__bi_mul_small(&nc_ctx->t1, &nc_ctx->f, 2); - duk__bi_mul(&nc_ctx->r, &nc_ctx->t1, &nc_ctx->mp); /* r <- (2 * f) * b^e */ - duk__bi_set_small(&nc_ctx->s, 2); /* s <- 2 */ - } - } else { - /* When doing string-to-number, lowest_mantissa is always 0 so - * the exponent check, while incorrect, won't matter. - */ - if (nc_ctx->e > DUK__IEEE_DOUBLE_EXP_MIN /*not minimum exponent*/ && - lowest_mantissa /* lowest mantissa for this exponent*/) { - /* r <- (* f b 2) [if b==2 -> (* f 4)] - * s <- (* (expt b (- 1 e)) 2) == b^(1-e) * 2 [if b==2 -> b^(2-e)] - * m+ <- b == 2 - * m- <- 1 - * k <- 0 - * B <- B - * low_ok <- round - * high_ok <- round - */ - - DUK_DDD(DUK_DDDPRINT("negative exponent; not minimum exponent and " - "lowest mantissa for this exponent -> " - "unequal gaps")); - - duk__bi_mul_small(&nc_ctx->r, &nc_ctx->f, (duk_uint32_t) (nc_ctx->b * 2)); /* r <- (2 * b) * f */ - duk__bi_exp_small(&nc_ctx->t1, - nc_ctx->b, - 1 - nc_ctx->e, - &nc_ctx->s, - &nc_ctx->t2); /* NB: use 's' as temp on purpose */ - duk__bi_mul_small(&nc_ctx->s, &nc_ctx->t1, 2); /* s <- b^(1-e) * 2 */ - duk__bi_set_small(&nc_ctx->mp, 2); - duk__bi_set_small(&nc_ctx->mm, 1); - nc_ctx->unequal_gaps = 1; - } else { - /* r <- (* f 2) - * s <- (* (expt b (- e)) 2) == b^(-e) * 2 [if b==2 -> b^(1-e)] - * m+ <- 1 - * m- <- 1 - * k <- 0 - * B <- B - * low_ok <- round - * high_ok <- round - */ - - DUK_DDD(DUK_DDDPRINT("negative exponent; minimum exponent or not " - "lowest mantissa for this exponent -> " - "equal gaps")); - - duk__bi_mul_small(&nc_ctx->r, &nc_ctx->f, 2); /* r <- 2 * f */ - duk__bi_exp_small(&nc_ctx->t1, - nc_ctx->b, - -nc_ctx->e, - &nc_ctx->s, - &nc_ctx->t2); /* NB: use 's' as temp on purpose */ - duk__bi_mul_small(&nc_ctx->s, &nc_ctx->t1, 2); /* s <- b^(-e) * 2 */ - duk__bi_set_small(&nc_ctx->mp, 1); - duk__bi_set_small(&nc_ctx->mm, 1); - } - } -} - -DUK_LOCAL void duk__dragon4_scale(duk__numconv_stringify_ctx *nc_ctx) { - duk_small_int_t k = 0; - - /* This is essentially the 'scale' algorithm, with recursion removed. - * Note that 'k' is either correct immediately, or will move in one - * direction in the loop. There's no need to do the low/high checks - * on every round (like the Scheme algorithm does). - * - * The scheme algorithm finds 'k' and updates 's' simultaneously, - * while the logical algorithm finds 'k' with 's' having its initial - * value, after which 's' is updated separately (see the Burger-Dybvig - * paper, Section 3.1, steps 2 and 3). - * - * The case where m+ == m- (almost always) is optimized for, because - * it reduces the bigint operations considerably and almost always - * applies. The scale loop only needs to work with m+, so this works. - */ - - /* XXX: this algorithm could be optimized quite a lot by using e.g. - * a logarithm based estimator for 'k' and performing B^n multiplication - * using a lookup table or using some bit-representation based exp - * algorithm. Currently we just loop, with significant performance - * impact for very large and very small numbers. - */ - - DUK_DDD( - DUK_DDDPRINT("scale: B=%ld, low_ok=%ld, high_ok=%ld", (long) nc_ctx->B, (long) nc_ctx->low_ok, (long) nc_ctx->high_ok)); - DUK__BI_PRINT("r(init)", &nc_ctx->r); - DUK__BI_PRINT("s(init)", &nc_ctx->s); - DUK__BI_PRINT("mp(init)", &nc_ctx->mp); - DUK__BI_PRINT("mm(init)", &nc_ctx->mm); - - for (;;) { - DUK_DDD(DUK_DDDPRINT("scale loop (inc k), k=%ld", (long) k)); - DUK__BI_PRINT("r", &nc_ctx->r); - DUK__BI_PRINT("s", &nc_ctx->s); - DUK__BI_PRINT("m+", &nc_ctx->mp); - DUK__BI_PRINT("m-", &nc_ctx->mm); - - duk__bi_add(&nc_ctx->t1, &nc_ctx->r, &nc_ctx->mp); /* t1 = (+ r m+) */ - if (duk__bi_compare(&nc_ctx->t1, &nc_ctx->s) >= (nc_ctx->high_ok ? 0 : 1)) { - DUK_DDD(DUK_DDDPRINT("k is too low")); - /* r <- r - * s <- (* s B) - * m+ <- m+ - * m- <- m- - * k <- (+ k 1) - */ - - duk__bi_mul_small_copy(&nc_ctx->s, (duk_uint32_t) nc_ctx->B, &nc_ctx->t1); - k++; - } else { - break; - } - } - - /* k > 0 -> k was too low, and cannot be too high */ - if (k > 0) { - goto skip_dec_k; - } - - for (;;) { - DUK_DDD(DUK_DDDPRINT("scale loop (dec k), k=%ld", (long) k)); - DUK__BI_PRINT("r", &nc_ctx->r); - DUK__BI_PRINT("s", &nc_ctx->s); - DUK__BI_PRINT("m+", &nc_ctx->mp); - DUK__BI_PRINT("m-", &nc_ctx->mm); - - duk__bi_add(&nc_ctx->t1, &nc_ctx->r, &nc_ctx->mp); /* t1 = (+ r m+) */ - duk__bi_mul_small(&nc_ctx->t2, &nc_ctx->t1, (duk_uint32_t) nc_ctx->B); /* t2 = (* (+ r m+) B) */ - if (duk__bi_compare(&nc_ctx->t2, &nc_ctx->s) <= (nc_ctx->high_ok ? -1 : 0)) { - DUK_DDD(DUK_DDDPRINT("k is too high")); - /* r <- (* r B) - * s <- s - * m+ <- (* m+ B) - * m- <- (* m- B) - * k <- (- k 1) - */ - duk__bi_mul_small_copy(&nc_ctx->r, (duk_uint32_t) nc_ctx->B, &nc_ctx->t1); - duk__bi_mul_small_copy(&nc_ctx->mp, (duk_uint32_t) nc_ctx->B, &nc_ctx->t1); - if (nc_ctx->unequal_gaps) { - DUK_DDD(DUK_DDDPRINT("m+ != m- -> need to update m- too")); - duk__bi_mul_small_copy(&nc_ctx->mm, (duk_uint32_t) nc_ctx->B, &nc_ctx->t1); - } - k--; - } else { - break; - } - } - -skip_dec_k: - - if (!nc_ctx->unequal_gaps) { - DUK_DDD(DUK_DDDPRINT("equal gaps, copy m- from m+")); - duk__bi_copy(&nc_ctx->mm, &nc_ctx->mp); /* mm <- mp */ - } - nc_ctx->k = k; - - DUK_DDD(DUK_DDDPRINT("final k: %ld", (long) k)); - DUK__BI_PRINT("r(final)", &nc_ctx->r); - DUK__BI_PRINT("s(final)", &nc_ctx->s); - DUK__BI_PRINT("mp(final)", &nc_ctx->mp); - DUK__BI_PRINT("mm(final)", &nc_ctx->mm); -} - -DUK_LOCAL void duk__dragon4_generate(duk__numconv_stringify_ctx *nc_ctx) { - duk_small_int_t tc1, tc2; /* terminating conditions */ - duk_small_int_t d; /* current digit */ - duk_small_int_t count = 0; /* digit count */ - - /* - * Digit generation loop. - * - * Different termination conditions: - * - * 1. Free format output. Terminate when shortest accurate - * representation found. - * - * 2. Fixed format output, with specific number of digits. - * Ignore termination conditions, terminate when digits - * generated. Caller requests an extra digit and rounds. - * - * 3. Fixed format output, with a specific absolute cut-off - * position (e.g. 10 digits after decimal point). Note - * that we always generate at least one digit, even if - * the digit is below the cut-off point already. - */ - - for (;;) { - DUK_DDD(DUK_DDDPRINT("generate loop, count=%ld, k=%ld, B=%ld, low_ok=%ld, high_ok=%ld", - (long) count, - (long) nc_ctx->k, - (long) nc_ctx->B, - (long) nc_ctx->low_ok, - (long) nc_ctx->high_ok)); - DUK__BI_PRINT("r", &nc_ctx->r); - DUK__BI_PRINT("s", &nc_ctx->s); - DUK__BI_PRINT("m+", &nc_ctx->mp); - DUK__BI_PRINT("m-", &nc_ctx->mm); - - /* (quotient-remainder (* r B) s) using a dummy subtraction loop */ - duk__bi_mul_small(&nc_ctx->t1, &nc_ctx->r, (duk_uint32_t) nc_ctx->B); /* t1 <- (* r B) */ - d = 0; - for (;;) { - if (duk__bi_compare(&nc_ctx->t1, &nc_ctx->s) < 0) { - break; - } - duk__bi_sub_copy(&nc_ctx->t1, &nc_ctx->s, &nc_ctx->t2); /* t1 <- t1 - s */ - d++; - } - duk__bi_copy(&nc_ctx->r, &nc_ctx->t1); /* r <- (remainder (* r B) s) */ - /* d <- (quotient (* r B) s) (in range 0...B-1) */ - DUK_DDD(DUK_DDDPRINT("-> d(quot)=%ld", (long) d)); - DUK__BI_PRINT("r(rem)", &nc_ctx->r); - - duk__bi_mul_small_copy(&nc_ctx->mp, (duk_uint32_t) nc_ctx->B, &nc_ctx->t2); /* m+ <- (* m+ B) */ - duk__bi_mul_small_copy(&nc_ctx->mm, (duk_uint32_t) nc_ctx->B, &nc_ctx->t2); /* m- <- (* m- B) */ - DUK__BI_PRINT("mp(upd)", &nc_ctx->mp); - DUK__BI_PRINT("mm(upd)", &nc_ctx->mm); - - /* Terminating conditions. For fixed width output, we just ignore the - * terminating conditions (and pretend that tc1 == tc2 == false). The - * the current shortcut for fixed-format output is to generate a few - * extra digits and use rounding (with carry) to finish the output. - */ - - if (nc_ctx->is_fixed == 0) { - /* free-form */ - tc1 = (duk__bi_compare(&nc_ctx->r, &nc_ctx->mm) <= (nc_ctx->low_ok ? 0 : -1)); - - duk__bi_add(&nc_ctx->t1, &nc_ctx->r, &nc_ctx->mp); /* t1 <- (+ r m+) */ - tc2 = (duk__bi_compare(&nc_ctx->t1, &nc_ctx->s) >= (nc_ctx->high_ok ? 0 : 1)); - - DUK_DDD(DUK_DDDPRINT("tc1=%ld, tc2=%ld", (long) tc1, (long) tc2)); - } else { - /* fixed-format */ - tc1 = 0; - tc2 = 0; - } - - /* Count is incremented before DUK__DRAGON4_OUTPUT_PREINC() call - * on purpose, which is taken into account by the macro. - */ - count++; - - if (tc1) { - if (tc2) { - /* tc1 = true, tc2 = true */ - duk__bi_mul_small(&nc_ctx->t1, &nc_ctx->r, 2); - if (duk__bi_compare(&nc_ctx->t1, &nc_ctx->s) < 0) { /* (< (* r 2) s) */ - DUK_DDD(DUK_DDDPRINT("tc1=true, tc2=true, 2r > s: output d --> %ld (k=%ld)", - (long) d, - (long) nc_ctx->k)); - DUK__DRAGON4_OUTPUT_PREINC(nc_ctx, count, d); - } else { - DUK_DDD(DUK_DDDPRINT("tc1=true, tc2=true, 2r <= s: output d+1 --> %ld (k=%ld)", - (long) (d + 1), - (long) nc_ctx->k)); - DUK__DRAGON4_OUTPUT_PREINC(nc_ctx, count, d + 1); - } - break; - } else { - /* tc1 = true, tc2 = false */ - DUK_DDD(DUK_DDDPRINT("tc1=true, tc2=false: output d --> %ld (k=%ld)", (long) d, (long) nc_ctx->k)); - DUK__DRAGON4_OUTPUT_PREINC(nc_ctx, count, d); - break; - } - } else { - if (tc2) { - /* tc1 = false, tc2 = true */ - DUK_DDD(DUK_DDDPRINT("tc1=false, tc2=true: output d+1 --> %ld (k=%ld)", - (long) (d + 1), - (long) nc_ctx->k)); - DUK__DRAGON4_OUTPUT_PREINC(nc_ctx, count, d + 1); - break; - } else { - /* tc1 = false, tc2 = false */ - DUK_DDD(DUK_DDDPRINT("tc1=false, tc2=false: output d --> %ld (k=%ld)", (long) d, (long) nc_ctx->k)); - DUK__DRAGON4_OUTPUT_PREINC(nc_ctx, count, d); - - /* r <- r (updated above: r <- (remainder (* r B) s) - * s <- s - * m+ <- m+ (updated above: m+ <- (* m+ B) - * m- <- m- (updated above: m- <- (* m- B) - * B, low_ok, high_ok are fixed - */ - - /* fall through and continue for-loop */ - } - } - - /* fixed-format termination conditions */ - if (nc_ctx->is_fixed) { - if (nc_ctx->abs_pos) { - int pos = nc_ctx->k - count + 1; /* count is already incremented, take into account */ - DUK_DDD(DUK_DDDPRINT("fixed format, absolute: abs pos=%ld, k=%ld, count=%ld, req=%ld", - (long) pos, - (long) nc_ctx->k, - (long) count, - (long) nc_ctx->req_digits)); - if (pos <= nc_ctx->req_digits) { - DUK_DDD(DUK_DDDPRINT("digit position reached req_digits, end generate loop")); - break; - } - } else { - DUK_DDD(DUK_DDDPRINT("fixed format, relative: k=%ld, count=%ld, req=%ld", - (long) nc_ctx->k, - (long) count, - (long) nc_ctx->req_digits)); - if (count >= nc_ctx->req_digits) { - DUK_DDD(DUK_DDDPRINT("digit count reached req_digits, end generate loop")); - break; - } - } - } - } /* for */ - - nc_ctx->count = count; - - DUK_DDD(DUK_DDDPRINT("generate finished")); - -#if defined(DUK_USE_DEBUG_LEVEL) && (DUK_USE_DEBUG_LEVEL >= 2) - { - duk_uint8_t buf[2048]; - duk_small_int_t i, t; - duk_memzero(buf, sizeof(buf)); - for (i = 0; i < nc_ctx->count; i++) { - t = nc_ctx->digits[i]; - if (t < 0 || t > 36) { - buf[i] = (duk_uint8_t) '?'; - } else { - buf[i] = (duk_uint8_t) DUK__DIGITCHAR(t); - } - } - DUK_DDD(DUK_DDDPRINT("-> generated digits; k=%ld, digits='%s'", (long) nc_ctx->k, (const char *) buf)); - } -#endif -} - -/* Round up digits to a given position. If position is out-of-bounds, - * does nothing. If carry propagates over the first digit, a '1' is - * prepended to digits and 'k' will be updated. Return value indicates - * whether carry propagated over the first digit. - * - * Note that nc_ctx->count is NOT updated based on the rounding position - * (it is updated only if carry overflows over the first digit and an - * extra digit is prepended). - */ -DUK_LOCAL duk_small_int_t duk__dragon4_fixed_format_round(duk__numconv_stringify_ctx *nc_ctx, duk_small_int_t round_idx) { - duk_small_int_t t; - duk_uint8_t *p; - duk_uint8_t roundup_limit; - duk_small_int_t ret = 0; - - /* - * round_idx points to the digit which is considered for rounding; the - * digit to its left is the final digit of the rounded value. If round_idx - * is zero, rounding will be performed; the result will either be an empty - * rounded value or if carry happens a '1' digit is generated. - */ - - if (round_idx >= nc_ctx->count) { - DUK_DDD(DUK_DDDPRINT("round_idx out of bounds (%ld >= %ld (count)) -> no rounding", - (long) round_idx, - (long) nc_ctx->count)); - return 0; - } else if (round_idx < 0) { - DUK_DDD(DUK_DDDPRINT("round_idx out of bounds (%ld < 0) -> no rounding", (long) round_idx)); - return 0; - } - - /* - * Round-up limit. - * - * For even values, divides evenly, e.g. 10 -> roundup_limit=5. - * - * For odd values, rounds up, e.g. 3 -> roundup_limit=2. - * If radix is 3, 0/3 -> down, 1/3 -> down, 2/3 -> up. - */ - roundup_limit = (duk_uint8_t) ((nc_ctx->B + 1) / 2); - - p = &nc_ctx->digits[round_idx]; - if (*p >= roundup_limit) { - DUK_DDD(DUK_DDDPRINT("fixed-format rounding carry required")); - /* carry */ - for (;;) { - *p = 0; - if (p == &nc_ctx->digits[0]) { - DUK_DDD(DUK_DDDPRINT("carry propagated to first digit -> special case handling")); - duk_memmove((void *) (&nc_ctx->digits[1]), - (const void *) (&nc_ctx->digits[0]), - (size_t) (sizeof(char) * (size_t) nc_ctx->count)); - nc_ctx->digits[0] = 1; /* don't increase 'count' */ - nc_ctx->k++; /* position of highest digit changed */ - nc_ctx->count++; /* number of digits changed */ - ret = 1; - break; - } - - DUK_DDD(DUK_DDDPRINT("fixed-format rounding carry: B=%ld, roundup_limit=%ld, p=%p, digits=%p", - (long) nc_ctx->B, - (long) roundup_limit, - (void *) p, - (void *) nc_ctx->digits)); - p--; - t = *p; - DUK_DDD(DUK_DDDPRINT("digit before carry: %ld", (long) t)); - if (++t < nc_ctx->B) { - DUK_DDD(DUK_DDDPRINT("rounding carry terminated")); - *p = (duk_uint8_t) t; - break; - } - - DUK_DDD(DUK_DDDPRINT("wraps, carry to next digit")); - } - } - - return ret; -} - -#define DUK__NO_EXP (65536) /* arbitrary marker, outside valid exp range */ - -DUK_LOCAL void duk__dragon4_convert_and_push(duk__numconv_stringify_ctx *nc_ctx, - duk_hthread *thr, - duk_small_int_t radix, - duk_small_int_t digits, - duk_small_uint_t flags, - duk_small_int_t neg) { - duk_small_int_t k; - duk_small_int_t pos, pos_end; - duk_small_int_t expt; - duk_small_int_t dig; - duk_uint8_t *q; - duk_uint8_t *buf; - - /* - * The string conversion here incorporates all the necessary ECMAScript - * semantics without attempting to be generic. nc_ctx->digits contains - * nc_ctx->count digits (>= 1), with the topmost digit's 'position' - * indicated by nc_ctx->k as follows: - * - * digits="123" count=3 k=0 --> 0.123 - * digits="123" count=3 k=1 --> 1.23 - * digits="123" count=3 k=5 --> 12300 - * digits="123" count=3 k=-1 --> 0.0123 - * - * Note that the identifier names used for format selection are different - * in Burger-Dybvig paper and ECMAScript specification (quite confusingly - * so, because e.g. 'k' has a totally different meaning in each). See - * documentation for discussion. - * - * ECMAScript doesn't specify any specific behavior for format selection - * (e.g. when to use exponent notation) for non-base-10 numbers. - * - * The bigint space in the context is reused for string output, as there - * is more than enough space for that (>1kB at the moment), and we avoid - * allocating even more stack. - */ - - DUK_ASSERT(DUK__NUMCONV_CTX_BIGINTS_SIZE >= DUK__MAX_FORMATTED_LENGTH); - DUK_ASSERT(nc_ctx->count >= 1); - - k = nc_ctx->k; - buf = (duk_uint8_t *) &nc_ctx->f; /* XXX: union would be more correct */ - q = buf; - - /* Exponent handling: if exponent format is used, record exponent value and - * fake k such that one leading digit is generated (e.g. digits=123 -> "1.23"). - * - * toFixed() prevents exponent use; otherwise apply a set of criteria to - * match the other API calls (toString(), toPrecision, etc). - */ - - expt = DUK__NO_EXP; - if (!nc_ctx->abs_pos /* toFixed() */) { - if ((flags & DUK_N2S_FLAG_FORCE_EXP) || /* exponential notation forced */ - ((flags & DUK_N2S_FLAG_NO_ZERO_PAD) && /* fixed precision and zero padding would be required */ - (k - digits >= 1)) || /* (e.g. k=3, digits=2 -> "12X") */ - ((k > 21 || k <= -6) && (radix == 10))) { /* toString() conditions */ - DUK_DDD(DUK_DDDPRINT("use exponential notation: k=%ld -> expt=%ld", (long) k, (long) (k - 1))); - expt = k - 1; /* e.g. 12.3 -> digits="123" k=2 -> 1.23e1 */ - k = 1; /* generate mantissa with a single leading whole number digit */ - } - } - - if (neg) { - *q++ = '-'; - } - - /* Start position (inclusive) and end position (exclusive) */ - pos = (k >= 1 ? k : 1); - if (nc_ctx->is_fixed) { - if (nc_ctx->abs_pos) { - /* toFixed() */ - pos_end = -digits; - } else { - pos_end = k - digits; - } - } else { - pos_end = k - nc_ctx->count; - } - if (pos_end > 0) { - pos_end = 0; - } - - DUK_DDD(DUK_DDDPRINT("expt=%ld, k=%ld, count=%ld, pos=%ld, pos_end=%ld, is_fixed=%ld, " - "digits=%ld, abs_pos=%ld", - (long) expt, - (long) k, - (long) nc_ctx->count, - (long) pos, - (long) pos_end, - (long) nc_ctx->is_fixed, - (long) digits, - (long) nc_ctx->abs_pos)); - - /* Digit generation */ - while (pos > pos_end) { - DUK_DDD(DUK_DDDPRINT("digit generation: pos=%ld, pos_end=%ld", (long) pos, (long) pos_end)); - if (pos == 0) { - *q++ = (duk_uint8_t) '.'; - } - if (pos > k) { - *q++ = (duk_uint8_t) '0'; - } else if (pos <= k - nc_ctx->count) { - *q++ = (duk_uint8_t) '0'; - } else { - dig = nc_ctx->digits[k - pos]; - DUK_ASSERT(dig >= 0 && dig < nc_ctx->B); - *q++ = (duk_uint8_t) DUK__DIGITCHAR(dig); - } - - pos--; - } - DUK_ASSERT(pos <= 1); - - /* Exponent */ - if (expt != DUK__NO_EXP) { - /* - * Exponent notation for non-base-10 numbers isn't specified in ECMAScript - * specification, as it never explicitly turns up: non-decimal numbers can - * only be formatted with Number.prototype.toString([radix]) and for that, - * behavior is not explicitly specified. - * - * Logical choices include formatting the exponent as decimal (e.g. binary - * 100000 as 1e+5) or in current radix (e.g. binary 100000 as 1e+101). - * The Dragon4 algorithm (in the original paper) prints the exponent value - * in the target radix B. However, for radix values 15 and above, the - * exponent separator 'e' is no longer easily parseable. Consider, for - * instance, the number "1.faecee+1c". - */ - - duk_size_t len; - char expt_sign; - - *q++ = 'e'; - if (expt >= 0) { - expt_sign = '+'; - } else { - expt_sign = '-'; - expt = -expt; - } - *q++ = (duk_uint8_t) expt_sign; - len = duk__dragon4_format_uint32(q, (duk_uint32_t) expt, radix); - q += len; - } - - duk_push_lstring(thr, (const char *) buf, (size_t) (q - buf)); -} - -/* - * Conversion helpers - */ - -DUK_LOCAL void duk__dragon4_double_to_ctx(duk__numconv_stringify_ctx *nc_ctx, duk_double_t x) { - duk_double_union u; - duk_uint32_t tmp; - duk_small_int_t expt; - - /* - * seeeeeee eeeeffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff - * A B C D E F G H - * - * s sign bit - * eee... exponent field - * fff... fraction - * - * ieee value = 1.ffff... * 2^(e - 1023) (normal) - * = 0.ffff... * 2^(-1022) (denormal) - * - * algorithm v = f * b^e - */ - - DUK_DBLUNION_SET_DOUBLE(&u, x); - - nc_ctx->f.n = 2; - - tmp = DUK_DBLUNION_GET_LOW32(&u); - nc_ctx->f.v[0] = tmp; - tmp = DUK_DBLUNION_GET_HIGH32(&u); - nc_ctx->f.v[1] = tmp & 0x000fffffUL; - expt = (duk_small_int_t) ((tmp >> 20) & 0x07ffUL); - - if (expt == 0) { - /* denormal */ - expt = DUK__IEEE_DOUBLE_EXP_MIN - 52; - duk__bi_normalize(&nc_ctx->f); - } else { - /* normal: implicit leading 1-bit */ - nc_ctx->f.v[1] |= 0x00100000UL; - expt = expt - DUK__IEEE_DOUBLE_EXP_BIAS - 52; - DUK_ASSERT(duk__bi_is_valid(&nc_ctx->f)); /* true, because v[1] has at least one bit set */ - } - - DUK_ASSERT(duk__bi_is_valid(&nc_ctx->f)); - - nc_ctx->e = expt; -} - -DUK_LOCAL void duk__dragon4_ctx_to_double(duk__numconv_stringify_ctx *nc_ctx, duk_double_t *x) { - duk_double_union u; - duk_small_int_t expt; - duk_small_int_t i; - duk_small_int_t bitstart; - duk_small_int_t bitround; - duk_small_int_t bitidx; - duk_small_int_t skip_round; - duk_uint32_t t, v; - - DUK_ASSERT(nc_ctx->count == 53 + 1); - - /* Sometimes this assert is not true right now; it will be true after - * rounding. See: test-bug-numconv-mantissa-assert.js. - */ - DUK_ASSERT_DISABLE(nc_ctx->digits[0] == 1); /* zero handled by caller */ - - /* Should not be required because the code below always sets both high - * and low parts, but at least gcc-4.4.5 fails to deduce this correctly - * (perhaps because the low part is set (seemingly) conditionally in a - * loop), so this is here to avoid the bogus warning. - */ - duk_memzero((void *) &u, sizeof(u)); - - /* - * Figure out how generated digits match up with the mantissa, - * and then perform rounding. If mantissa overflows, need to - * recompute the exponent (it is bumped and may overflow to - * infinity). - * - * For normal numbers the leading '1' is hidden and ignored, - * and the last bit is used for rounding: - * - * rounding pt - * <--------52------->| - * 1 x x x x ... x x x x|y ==> x x x x ... x x x x - * - * For denormals, the leading '1' is included in the number, - * and the rounding point is different: - * - * rounding pt - * <--52 or less--->| - * 1 x x x x ... x x|x x y ==> 0 0 ... 1 x x ... x x - * - * The largest denormals will have a mantissa beginning with - * a '1' (the explicit leading bit); smaller denormals will - * have leading zero bits. - * - * If the exponent would become too high, the result becomes - * Infinity. If the exponent is so small that the entire - * mantissa becomes zero, the result becomes zero. - * - * Note: the Dragon4 'k' is off-by-one with respect to the IEEE - * exponent. For instance, k==0 indicates that the leading '1' - * digit is at the first binary fraction position (0.1xxx...); - * the corresponding IEEE exponent would be -1. - */ - - skip_round = 0; - -recheck_exp: - - expt = nc_ctx->k - 1; /* IEEE exp without bias */ - if (expt > 1023) { - /* Infinity */ - bitstart = -255; /* needed for inf: causes mantissa to become zero, - * and rounding to be skipped. - */ - expt = 2047; - } else if (expt >= -1022) { - /* normal */ - bitstart = 1; /* skip leading digit */ - expt += DUK__IEEE_DOUBLE_EXP_BIAS; - DUK_ASSERT(expt >= 1 && expt <= 2046); - } else { - /* denormal or zero */ - bitstart = 1023 + expt; /* expt==-1023 -> bitstart=0 (leading 1); - * expt==-1024 -> bitstart=-1 (one left of leading 1), etc - */ - expt = 0; - } - bitround = bitstart + 52; - - DUK_DDD(DUK_DDDPRINT("ieee expt=%ld, bitstart=%ld, bitround=%ld", (long) expt, (long) bitstart, (long) bitround)); - - if (!skip_round) { - if (duk__dragon4_fixed_format_round(nc_ctx, bitround)) { - /* Corner case: see test-numconv-parse-mant-carry.js. We could - * just bump the exponent and update bitstart, but it's more robust - * to recompute (but avoid rounding twice). - */ - DUK_DDD(DUK_DDDPRINT("rounding caused exponent to be bumped, recheck exponent")); - skip_round = 1; - goto recheck_exp; - } - } - - /* - * Create mantissa - */ - - t = 0; - for (i = 0; i < 52; i++) { - bitidx = bitstart + 52 - 1 - i; - if (bitidx >= nc_ctx->count) { - v = 0; - } else if (bitidx < 0) { - v = 0; - } else { - v = nc_ctx->digits[bitidx]; - } - DUK_ASSERT(v == 0 || v == 1); - t += v << (i % 32); - if (i == 31) { - /* low 32 bits is complete */ - DUK_DBLUNION_SET_LOW32(&u, t); - t = 0; - } - } - /* t has high mantissa */ - - DUK_DDD(DUK_DDDPRINT("mantissa is complete: %08lx %08lx", (unsigned long) t, (unsigned long) DUK_DBLUNION_GET_LOW32(&u))); - - DUK_ASSERT(expt >= 0 && expt <= 0x7ffL); - t += ((duk_uint32_t) expt) << 20; -#if 0 /* caller handles sign change */ - if (negative) { - t |= 0x80000000U; - } -#endif - DUK_DBLUNION_SET_HIGH32(&u, t); - - DUK_DDD(DUK_DDDPRINT("number is complete: %08lx %08lx", - (unsigned long) DUK_DBLUNION_GET_HIGH32(&u), - (unsigned long) DUK_DBLUNION_GET_LOW32(&u))); - - *x = DUK_DBLUNION_GET_DOUBLE(&u); -} - -/* - * Exposed number-to-string API - * - * Input: [ number ] - * Output: [ string ] - */ - -DUK_LOCAL DUK_NOINLINE void duk__numconv_stringify_raw(duk_hthread *thr, - duk_small_int_t radix, - duk_small_int_t digits, - duk_small_uint_t flags) { - duk_double_t x; - duk_small_int_t c; - duk_small_int_t neg; - duk_uint32_t uval; - duk__numconv_stringify_ctx nc_ctx_alloc; /* large context; around 2kB now */ - duk__numconv_stringify_ctx *nc_ctx = &nc_ctx_alloc; - - x = (duk_double_t) duk_require_number(thr, -1); - duk_pop(thr); - - /* - * Handle special cases (NaN, infinity, zero). - */ - - c = (duk_small_int_t) DUK_FPCLASSIFY(x); - if (DUK_SIGNBIT((double) x)) { - x = -x; - neg = 1; - } else { - neg = 0; - } - - /* NaN sign bit is platform specific with unpacked, un-normalized NaNs */ - DUK_ASSERT(c == DUK_FP_NAN || DUK_SIGNBIT((double) x) == 0); - - if (c == DUK_FP_NAN) { - duk_push_hstring_stridx(thr, DUK_STRIDX_NAN); - return; - } else if (c == DUK_FP_INFINITE) { - if (neg) { - /* -Infinity */ - duk_push_hstring_stridx(thr, DUK_STRIDX_MINUS_INFINITY); - } else { - /* Infinity */ - duk_push_hstring_stridx(thr, DUK_STRIDX_INFINITY); - } - return; - } else if (c == DUK_FP_ZERO) { - /* We can't shortcut zero here if it goes through special formatting - * (such as forced exponential notation). - */ - ; - } - - /* - * Handle integers in 32-bit range (that is, [-(2**32-1),2**32-1]) - * specially, as they're very likely for embedded programs. This - * is now done for all radix values. We must be careful not to use - * the fast path when special formatting (e.g. forced exponential) - * is in force. - * - * XXX: could save space by supporting radix 10 only and using - * sprintf "%lu" for the fast path and for exponent formatting. - */ - - uval = duk_double_to_uint32_t(x); - if (duk_double_equals((double) uval, x) && /* integer number in range */ - flags == 0) { /* no special formatting */ - /* use bigint area as a temp */ - duk_uint8_t *buf = (duk_uint8_t *) (&nc_ctx->f); - duk_uint8_t *p = buf; - - DUK_ASSERT(DUK__NUMCONV_CTX_BIGINTS_SIZE >= 32 + 1); /* max size: radix=2 + sign */ - if (neg && uval != 0) { - /* no negative sign for zero */ - *p++ = (duk_uint8_t) '-'; - } - p += duk__dragon4_format_uint32(p, uval, radix); - duk_push_lstring(thr, (const char *) buf, (duk_size_t) (p - buf)); - return; - } - - /* - * Dragon4 setup. - * - * Convert double from IEEE representation for conversion; - * normal finite values have an implicit leading 1-bit. The - * slow path algorithm doesn't handle zero, so zero is special - * cased here but still creates a valid nc_ctx, and goes - * through normal formatting in case special formatting has - * been requested (e.g. forced exponential format: 0 -> "0e+0"). - */ - - /* Would be nice to bulk clear the allocation, but the context - * is 1-2 kilobytes and nothing should rely on it being zeroed. - */ -#if 0 - duk_memzero((void *) nc_ctx, sizeof(*nc_ctx)); /* slow init, do only for slow path cases */ -#endif - - nc_ctx->is_s2n = 0; - nc_ctx->b = 2; - nc_ctx->B = radix; - nc_ctx->abs_pos = 0; - if (flags & DUK_N2S_FLAG_FIXED_FORMAT) { - nc_ctx->is_fixed = 1; - if (flags & DUK_N2S_FLAG_FRACTION_DIGITS) { - /* absolute req_digits; e.g. digits = 1 -> last digit is 0, - * but add an extra digit for rounding. - */ - nc_ctx->abs_pos = 1; - nc_ctx->req_digits = (-digits + 1) - 1; - } else { - nc_ctx->req_digits = digits + 1; - } - } else { - nc_ctx->is_fixed = 0; - nc_ctx->req_digits = 0; - } - - if (c == DUK_FP_ZERO) { - /* Zero special case: fake requested number of zero digits; ensure - * no sign bit is printed. Relative and absolute fixed format - * require separate handling. - */ - duk_small_int_t count; - if (nc_ctx->is_fixed) { - if (nc_ctx->abs_pos) { - count = digits + 2; /* lead zero + 'digits' fractions + 1 for rounding */ - } else { - count = digits + 1; /* + 1 for rounding */ - } - } else { - count = 1; - } - DUK_DDD(DUK_DDDPRINT("count=%ld", (long) count)); - DUK_ASSERT(count >= 1); - duk_memzero((void *) nc_ctx->digits, (size_t) count); - nc_ctx->count = count; - nc_ctx->k = 1; /* 0.000... */ - neg = 0; - goto zero_skip; - } - - duk__dragon4_double_to_ctx(nc_ctx, x); /* -> sets 'f' and 'e' */ - DUK__BI_PRINT("f", &nc_ctx->f); - DUK_DDD(DUK_DDDPRINT("e=%ld", (long) nc_ctx->e)); - - /* - * Dragon4 slow path digit generation. - */ - - duk__dragon4_prepare(nc_ctx); /* setup many variables in nc_ctx */ - - DUK_DDD(DUK_DDDPRINT("after prepare:")); - DUK__BI_PRINT("r", &nc_ctx->r); - DUK__BI_PRINT("s", &nc_ctx->s); - DUK__BI_PRINT("mp", &nc_ctx->mp); - DUK__BI_PRINT("mm", &nc_ctx->mm); - - duk__dragon4_scale(nc_ctx); - - DUK_DDD(DUK_DDDPRINT("after scale; k=%ld", (long) nc_ctx->k)); - DUK__BI_PRINT("r", &nc_ctx->r); - DUK__BI_PRINT("s", &nc_ctx->s); - DUK__BI_PRINT("mp", &nc_ctx->mp); - DUK__BI_PRINT("mm", &nc_ctx->mm); - - duk__dragon4_generate(nc_ctx); - - /* - * Convert and push final string. - */ - -zero_skip: - - if (flags & DUK_N2S_FLAG_FIXED_FORMAT) { - /* Perform fixed-format rounding. */ - duk_small_int_t roundpos; - if (flags & DUK_N2S_FLAG_FRACTION_DIGITS) { - /* 'roundpos' is relative to nc_ctx->k and increases to the right - * (opposite of how 'k' changes). - */ - roundpos = -digits; /* absolute position for digit considered for rounding */ - roundpos = nc_ctx->k - roundpos; - } else { - roundpos = digits; - } - DUK_DDD(DUK_DDDPRINT("rounding: k=%ld, count=%ld, digits=%ld, roundpos=%ld", - (long) nc_ctx->k, - (long) nc_ctx->count, - (long) digits, - (long) roundpos)); - (void) duk__dragon4_fixed_format_round(nc_ctx, roundpos); - - /* Note: 'count' is currently not adjusted by rounding (i.e. the - * digits are not "chopped off". That shouldn't matter because - * the digit position (absolute or relative) is passed on to the - * convert-and-push function. - */ - } - - duk__dragon4_convert_and_push(nc_ctx, thr, radix, digits, flags, neg); -} - -DUK_INTERNAL void duk_numconv_stringify(duk_hthread *thr, duk_small_int_t radix, duk_small_int_t digits, duk_small_uint_t flags) { - duk_native_stack_check(thr); - duk__numconv_stringify_raw(thr, radix, digits, flags); -} - -/* - * Exposed string-to-number API - * - * Input: [ string ] - * Output: [ number ] - * - * If number parsing fails, a NaN is pushed as the result. If number parsing - * fails due to an internal error, an InternalError is thrown. - */ - -DUK_LOCAL DUK_NOINLINE void duk__numconv_parse_raw(duk_hthread *thr, duk_small_int_t radix, duk_small_uint_t flags) { - duk__numconv_stringify_ctx nc_ctx_alloc; /* large context; around 2kB now */ - duk__numconv_stringify_ctx *nc_ctx = &nc_ctx_alloc; - duk_double_t res; - duk_hstring *h_str; - duk_int_t expt; - duk_bool_t expt_neg; - duk_small_int_t expt_adj; - duk_small_int_t neg; - duk_small_int_t dig; - duk_small_int_t dig_whole; - duk_small_int_t dig_lzero; - duk_small_int_t dig_frac; - duk_small_int_t dig_expt; - duk_small_int_t dig_prec; - const duk__exp_limits *explim; - const duk_uint8_t *p; - duk_small_int_t ch; - - DUK_DDD(DUK_DDDPRINT("parse number: %!T, radix=%ld, flags=0x%08lx", - (duk_tval *) duk_get_tval(thr, -1), - (long) radix, - (unsigned long) flags)); - - DUK_ASSERT(radix >= 2 && radix <= 36); - DUK_ASSERT(radix - 2 < (duk_small_int_t) sizeof(duk__str2num_digits_for_radix)); - - /* - * Preliminaries: trim, sign, Infinity check - * - * We rely on the interned string having a NUL terminator, which will - * cause a parse failure wherever it is encountered. As a result, we - * don't need separate pointer checks. - * - * There is no special parsing for 'NaN' in the specification although - * 'Infinity' (with an optional sign) is allowed in some contexts. - * Some contexts allow plus/minus sign, while others only allow the - * minus sign (like JSON.parse()). - * - * Automatic hex number detection (leading '0x' or '0X') and octal - * number detection (leading '0' followed by at least one octal digit) - * is done here too. - * - * Symbols are not explicitly rejected here (that's up to the caller). - * If a symbol were passed here, it should ultimately safely fail - * parsing due to a syntax error. - */ - - if (flags & DUK_S2N_FLAG_TRIM_WHITE) { - /* Leading / trailing whitespace is sometimes accepted and - * sometimes not. After white space trimming, all valid input - * characters are pure ASCII. - */ - duk_trim(thr, -1); - } - h_str = duk_require_hstring(thr, -1); - DUK_ASSERT(h_str != NULL); - p = (const duk_uint8_t *) DUK_HSTRING_GET_DATA(h_str); - - neg = 0; - ch = *p; - if (ch == (duk_small_int_t) '+') { - if ((flags & DUK_S2N_FLAG_ALLOW_PLUS) == 0) { - DUK_DDD(DUK_DDDPRINT("parse failed: leading plus sign not allowed")); - goto parse_fail; - } - p++; - } else if (ch == (duk_small_int_t) '-') { - if ((flags & DUK_S2N_FLAG_ALLOW_MINUS) == 0) { - DUK_DDD(DUK_DDDPRINT("parse failed: leading minus sign not allowed")); - goto parse_fail; - } - p++; - neg = 1; - } - - if ((flags & DUK_S2N_FLAG_ALLOW_INF) && DUK_STRNCMP((const char *) p, "Infinity", 8) == 0) { - /* Don't check for Infinity unless the context allows it. - * 'Infinity' is a valid integer literal in e.g. base-36: - * - * parseInt('Infinity', 36) - * 1461559270678 - */ - - if ((flags & DUK_S2N_FLAG_ALLOW_GARBAGE) == 0 && p[8] != DUK_ASC_NUL) { - DUK_DDD(DUK_DDDPRINT("parse failed: trailing garbage after matching 'Infinity' not allowed")); - goto parse_fail; - } else { - res = DUK_DOUBLE_INFINITY; - goto negcheck_and_ret; - } - } - ch = *p; - if (ch == (duk_small_int_t) '0') { - duk_small_int_t detect_radix = 0; - ch = DUK_LOWERCASE_CHAR_ASCII(p[1]); /* 'x' or 'X' -> 'x' */ - if ((flags & DUK_S2N_FLAG_ALLOW_AUTO_HEX_INT) && ch == DUK_ASC_LC_X) { - DUK_DDD(DUK_DDDPRINT("detected 0x/0X hex prefix, changing radix and preventing fractions and exponent")); - detect_radix = 16; -#if 0 - } else if ((flags & DUK_S2N_FLAG_ALLOW_AUTO_LEGACY_OCT_INT) && - (ch >= (duk_small_int_t) '0' && ch <= (duk_small_int_t) '9')) { - DUK_DDD(DUK_DDDPRINT("detected 0n oct prefix, changing radix and preventing fractions and exponent")); - detect_radix = 8; - - /* NOTE: if this legacy octal case is added back, it has - * different flags and 'p' advance so this needs to be - * reworked. - */ - flags |= DUK_S2N_FLAG_ALLOW_EMPTY_AS_ZERO; /* interpret e.g. '09' as '0', not NaN */ - p += 1; -#endif - } else if ((flags & DUK_S2N_FLAG_ALLOW_AUTO_OCT_INT) && ch == DUK_ASC_LC_O) { - DUK_DDD(DUK_DDDPRINT("detected 0o oct prefix, changing radix and preventing fractions and exponent")); - detect_radix = 8; - } else if ((flags & DUK_S2N_FLAG_ALLOW_AUTO_BIN_INT) && ch == DUK_ASC_LC_B) { - DUK_DDD(DUK_DDDPRINT("detected 0b bin prefix, changing radix and preventing fractions and exponent")); - detect_radix = 2; - } - if (detect_radix > 0) { - radix = detect_radix; - /* Clear empty as zero flag: interpret e.g. '0x' and '0xg' as a NaN (= parse error) */ - flags &= ~(DUK_S2N_FLAG_ALLOW_EXP | DUK_S2N_FLAG_ALLOW_EMPTY_FRAC | DUK_S2N_FLAG_ALLOW_FRAC | - DUK_S2N_FLAG_ALLOW_NAKED_FRAC | DUK_S2N_FLAG_ALLOW_EMPTY_AS_ZERO); - flags |= DUK_S2N_FLAG_ALLOW_LEADING_ZERO; /* allow e.g. '0x0009' and '0b00010001' */ - p += 2; - } - } - - /* - * Scan number and setup for Dragon4. - * - * The fast path case is detected during setup: an integer which - * can be converted without rounding, no net exponent. The fast - * path could be implemented as a separate scan, but may not really - * be worth it: the multiplications for building 'f' are not - * expensive when 'f' is small. - * - * The significand ('f') must contain enough bits of (apparent) - * accuracy, so that Dragon4 will generate enough binary output digits. - * For decimal numbers, this means generating a 20-digit significand, - * which should yield enough practical accuracy to parse IEEE doubles. - * In fact, the ECMAScript specification explicitly allows an - * implementation to treat digits beyond 20 as zeroes (and even - * to round the 20th digit upwards). For non-decimal numbers, the - * appropriate number of digits has been precomputed for comparable - * accuracy. - * - * Digit counts: - * - * [ dig_lzero ] - * | - * .+-..---[ dig_prec ]----. - * | || | - * 0000123.456789012345678901234567890e+123456 - * | | | | | | - * `--+--' `------[ dig_frac ]-------' `-+--' - * | | - * [ dig_whole ] [ dig_expt ] - * - * dig_frac and dig_expt are -1 if not present - * dig_lzero is only computed for whole number part - * - * Parsing state - * - * Parsing whole part dig_frac < 0 AND dig_expt < 0 - * Parsing fraction part dig_frac >= 0 AND dig_expt < 0 - * Parsing exponent part dig_expt >= 0 (dig_frac may be < 0 or >= 0) - * - * Note: in case we hit an implementation limit (like exponent range), - * we should throw an error, NOT return NaN or Infinity. Even with - * very large exponent (or significand) values the final result may be - * finite, so NaN/Infinity would be incorrect. - */ - - duk__bi_set_small(&nc_ctx->f, 0); - dig_prec = 0; - dig_lzero = 0; - dig_whole = 0; - dig_frac = -1; - dig_expt = -1; - expt = 0; - expt_adj = 0; /* essentially tracks digit position of lowest 'f' digit */ - expt_neg = 0; - for (;;) { - ch = *p++; - - DUK_DDD(DUK_DDDPRINT("parse digits: p=%p, ch='%c' (%ld), expt=%ld, expt_adj=%ld, " - "dig_whole=%ld, dig_frac=%ld, dig_expt=%ld, dig_lzero=%ld, dig_prec=%ld", - (const void *) p, - (int) ((ch >= 0x20 && ch <= 0x7e) ? ch : '?'), - (long) ch, - (long) expt, - (long) expt_adj, - (long) dig_whole, - (long) dig_frac, - (long) dig_expt, - (long) dig_lzero, - (long) dig_prec)); - DUK__BI_PRINT("f", &nc_ctx->f); - - /* Most common cases first. */ - if (ch >= (duk_small_int_t) '0' && ch <= (duk_small_int_t) '9') { - dig = (duk_small_int_t) ch - '0' + 0; - } else if (ch == (duk_small_int_t) '.') { - /* A leading digit is not required in some cases, e.g. accept ".123". - * In other cases (JSON.parse()) a leading digit is required. This - * is checked for after the loop. - */ - if (dig_frac >= 0 || dig_expt >= 0) { - if (flags & DUK_S2N_FLAG_ALLOW_GARBAGE) { - DUK_DDD(DUK_DDDPRINT("garbage termination (invalid period)")); - break; - } else { - DUK_DDD(DUK_DDDPRINT("parse failed: period not allowed")); - goto parse_fail; - } - } - - if ((flags & DUK_S2N_FLAG_ALLOW_FRAC) == 0) { - /* Some contexts don't allow fractions at all; this can't be a - * post-check because the state ('f' and expt) would be incorrect. - */ - if (flags & DUK_S2N_FLAG_ALLOW_GARBAGE) { - DUK_DDD(DUK_DDDPRINT("garbage termination (invalid first period)")); - break; - } else { - DUK_DDD(DUK_DDDPRINT("parse failed: fraction part not allowed")); - } - } - - DUK_DDD(DUK_DDDPRINT("start fraction part")); - dig_frac = 0; - continue; - } else if (ch == (duk_small_int_t) 0) { - DUK_DDD(DUK_DDDPRINT("NUL termination")); - break; - } else if ((flags & DUK_S2N_FLAG_ALLOW_EXP) && dig_expt < 0 && - (ch == (duk_small_int_t) 'e' || ch == (duk_small_int_t) 'E')) { - /* Note: we don't parse back exponent notation for anything else - * than radix 10, so this is not an ambiguous check (e.g. hex - * exponent values may have 'e' either as a significand digit - * or as an exponent separator). - * - * If the exponent separator occurs twice, 'e' will be interpreted - * as a digit (= 14) and will be rejected as an invalid decimal - * digit. - */ - - DUK_DDD(DUK_DDDPRINT("start exponent part")); - - /* Exponent without a sign or with a +/- sign is accepted - * by all call sites (even JSON.parse()). - */ - ch = *p; - if (ch == (duk_small_int_t) '-') { - expt_neg = 1; - p++; - } else if (ch == (duk_small_int_t) '+') { - p++; - } - dig_expt = 0; - continue; - } else if (ch >= (duk_small_int_t) 'a' && ch <= (duk_small_int_t) 'z') { - dig = (duk_small_int_t) (ch - (duk_small_int_t) 'a' + 0x0a); - } else if (ch >= (duk_small_int_t) 'A' && ch <= (duk_small_int_t) 'Z') { - dig = (duk_small_int_t) (ch - (duk_small_int_t) 'A' + 0x0a); - } else { - dig = 255; /* triggers garbage digit check below */ - } - DUK_ASSERT((dig >= 0 && dig <= 35) || dig == 255); - - if (dig >= radix) { - if (flags & DUK_S2N_FLAG_ALLOW_GARBAGE) { - DUK_DDD(DUK_DDDPRINT("garbage termination")); - break; - } else { - DUK_DDD(DUK_DDDPRINT("parse failed: trailing garbage or invalid digit")); - goto parse_fail; - } - } - - if (dig_expt < 0) { - /* whole or fraction digit */ - - if (dig_prec < duk__str2num_digits_for_radix[radix - 2]) { - /* significant from precision perspective */ - - duk_small_int_t f_zero = duk__bi_is_zero(&nc_ctx->f); - if (f_zero && dig == 0) { - /* Leading zero is not counted towards precision digits; not - * in the integer part, nor in the fraction part. - */ - if (dig_frac < 0) { - dig_lzero++; - } - } else { - /* XXX: join these ops (multiply-accumulate), but only if - * code footprint decreases. - */ - duk__bi_mul_small(&nc_ctx->t1, &nc_ctx->f, (duk_uint32_t) radix); - duk__bi_add_small(&nc_ctx->f, &nc_ctx->t1, (duk_uint32_t) dig); - dig_prec++; - } - } else { - /* Ignore digits beyond a radix-specific limit, but note them - * in expt_adj. - */ - expt_adj++; - } - - if (dig_frac >= 0) { - dig_frac++; - expt_adj--; - } else { - dig_whole++; - } - } else { - /* exponent digit */ - - DUK_ASSERT(radix == 10); - expt = expt * radix + dig; - if (expt > DUK_S2N_MAX_EXPONENT) { - /* Impose a reasonable exponent limit, so that exp - * doesn't need to get tracked using a bigint. - */ - DUK_DDD(DUK_DDDPRINT("parse failed: exponent too large")); - goto parse_explimit_error; - } - dig_expt++; - } - } - - /* Leading zero. */ - - if (dig_lzero > 0 && dig_whole > 1) { - if ((flags & DUK_S2N_FLAG_ALLOW_LEADING_ZERO) == 0) { - DUK_DDD(DUK_DDDPRINT("parse failed: leading zeroes not allowed in integer part")); - goto parse_fail; - } - } - - /* Validity checks for various fraction formats ("0.1", ".1", "1.", "."). */ - - if (dig_whole == 0) { - if (dig_frac == 0) { - /* "." is not accepted in any format */ - DUK_DDD(DUK_DDDPRINT("parse failed: plain period without leading or trailing digits")); - goto parse_fail; - } else if (dig_frac > 0) { - /* ".123" */ - if ((flags & DUK_S2N_FLAG_ALLOW_NAKED_FRAC) == 0) { - DUK_DDD(DUK_DDDPRINT("parse failed: fraction part not allowed without " - "leading integer digit(s)")); - goto parse_fail; - } - } else { - /* Empty ("") is allowed in some formats (e.g. Number(''), as zero, - * but it must not have a leading +/- sign (GH-2019). Note that - * for Number(), h_str is already trimmed so we can check for zero - * length and still get Number(' + ') == NaN. - */ - if ((flags & DUK_S2N_FLAG_ALLOW_EMPTY_AS_ZERO) == 0) { - DUK_DDD(DUK_DDDPRINT("parse failed: empty string not allowed (as zero)")); - goto parse_fail; - } else if (DUK_HSTRING_GET_BYTELEN(h_str) != 0) { - DUK_DDD(DUK_DDDPRINT("parse failed: no digits, but not empty (had a +/- sign)")); - goto parse_fail; - } - } - } else { - if (dig_frac == 0) { - /* "123." is allowed in some formats */ - if ((flags & DUK_S2N_FLAG_ALLOW_EMPTY_FRAC) == 0) { - DUK_DDD(DUK_DDDPRINT("parse failed: empty fractions")); - goto parse_fail; - } - } else if (dig_frac > 0) { - /* "123.456" */ - ; - } else { - /* "123" */ - ; - } - } - - /* Exponent without digits (e.g. "1e" or "1e+"). If trailing garbage is - * allowed, ignore exponent part as garbage (= parse as "1", i.e. exp 0). - */ - - if (dig_expt == 0) { - if ((flags & DUK_S2N_FLAG_ALLOW_GARBAGE) == 0) { - DUK_DDD(DUK_DDDPRINT("parse failed: empty exponent")); - goto parse_fail; - } - DUK_ASSERT(expt == 0); - } - - if (expt_neg) { - expt = -expt; - } - DUK_DDD( - DUK_DDDPRINT("expt=%ld, expt_adj=%ld, net exponent -> %ld", (long) expt, (long) expt_adj, (long) (expt + expt_adj))); - expt += expt_adj; - - /* Fast path check. */ - - if (nc_ctx->f.n <= 1 && /* 32-bit value */ - expt == 0 /* no net exponent */) { - /* Fast path is triggered for no exponent and also for balanced exponent - * and fraction parts, e.g. for "1.23e2" == "123". Remember to respect - * zero sign. - */ - - /* XXX: could accept numbers larger than 32 bits, e.g. up to 53 bits? */ - DUK_DDD(DUK_DDDPRINT("fast path number parse")); - if (nc_ctx->f.n == 1) { - res = (double) nc_ctx->f.v[0]; - } else { - res = 0.0; - } - goto negcheck_and_ret; - } - - /* Significand ('f') padding. */ - - while (dig_prec < duk__str2num_digits_for_radix[radix - 2]) { - /* Pad significand with "virtual" zero digits so that Dragon4 will - * have enough (apparent) precision to work with. - */ - DUK_DDD(DUK_DDDPRINT("dig_prec=%ld, pad significand with zero", (long) dig_prec)); - duk__bi_mul_small_copy(&nc_ctx->f, (duk_uint32_t) radix, &nc_ctx->t1); - DUK__BI_PRINT("f", &nc_ctx->f); - expt--; - dig_prec++; - } - - DUK_DDD(DUK_DDDPRINT("final exponent: %ld", (long) expt)); - - /* Detect zero special case. */ - - if (nc_ctx->f.n == 0) { - /* This may happen even after the fast path check, if exponent is - * not balanced (e.g. "0e1"). Remember to respect zero sign. - */ - DUK_DDD(DUK_DDDPRINT("significand is zero")); - res = 0.0; - goto negcheck_and_ret; - } - - /* Quick reject of too large or too small exponents. This check - * would be incorrect for zero (e.g. "0e1000" is zero, not Infinity) - * so zero check must be above. - */ - - explim = &duk__str2num_exp_limits[radix - 2]; - if (expt > explim->upper) { - DUK_DDD(DUK_DDDPRINT("exponent too large -> infinite")); - res = (duk_double_t) DUK_DOUBLE_INFINITY; - goto negcheck_and_ret; - } else if (expt < explim->lower) { - DUK_DDD(DUK_DDDPRINT("exponent too small -> zero")); - res = (duk_double_t) 0.0; - goto negcheck_and_ret; - } - - nc_ctx->is_s2n = 1; - nc_ctx->e = expt; - nc_ctx->b = radix; - nc_ctx->B = 2; - nc_ctx->is_fixed = 1; - nc_ctx->abs_pos = 0; - nc_ctx->req_digits = 53 + 1; - - DUK__BI_PRINT("f", &nc_ctx->f); - DUK_DDD(DUK_DDDPRINT("e=%ld", (long) nc_ctx->e)); - - /* - * Dragon4 slow path (binary) digit generation. - * An extra digit is generated for rounding. - */ - - duk__dragon4_prepare(nc_ctx); /* setup many variables in nc_ctx */ - - DUK_DDD(DUK_DDDPRINT("after prepare:")); - DUK__BI_PRINT("r", &nc_ctx->r); - DUK__BI_PRINT("s", &nc_ctx->s); - DUK__BI_PRINT("mp", &nc_ctx->mp); - DUK__BI_PRINT("mm", &nc_ctx->mm); - - duk__dragon4_scale(nc_ctx); - - DUK_DDD(DUK_DDDPRINT("after scale; k=%ld", (long) nc_ctx->k)); - DUK__BI_PRINT("r", &nc_ctx->r); - DUK__BI_PRINT("s", &nc_ctx->s); - DUK__BI_PRINT("mp", &nc_ctx->mp); - DUK__BI_PRINT("mm", &nc_ctx->mm); - - duk__dragon4_generate(nc_ctx); - - DUK_ASSERT(nc_ctx->count == 53 + 1); - - /* - * Convert binary digits into an IEEE double. Need to handle - * denormals and rounding correctly. - * - * Some call sites currently assume the result is always a - * non-fastint double. If this is changed, check all call - * sites. - */ - - duk__dragon4_ctx_to_double(nc_ctx, &res); - goto negcheck_and_ret; - -negcheck_and_ret: - if (neg) { - res = -res; - } - duk_pop(thr); - duk_push_number(thr, (double) res); - DUK_DDD(DUK_DDDPRINT("result: %!T", (duk_tval *) duk_get_tval(thr, -1))); - return; - -parse_fail: - DUK_DDD(DUK_DDDPRINT("parse failed")); - duk_pop(thr); - duk_push_nan(thr); - return; - -parse_explimit_error: - DUK_DDD(DUK_DDDPRINT("parse failed, internal error, can't return a value")); - DUK_ERROR_RANGE(thr, "exponent too large"); - DUK_WO_NORETURN(return;); -} - -DUK_INTERNAL void duk_numconv_parse(duk_hthread *thr, duk_small_int_t radix, duk_small_uint_t flags) { - duk_native_stack_check(thr); - duk__numconv_parse_raw(thr, radix, flags); -} - -/* automatic undefs */ -#undef DUK__BI_MAX_PARTS -#undef DUK__BI_PRINT -#undef DUK__DIGITCHAR -#undef DUK__DRAGON4_OUTPUT_PREINC -#undef DUK__IEEE_DOUBLE_EXP_BIAS -#undef DUK__IEEE_DOUBLE_EXP_MIN -#undef DUK__MAX_FORMATTED_LENGTH -#undef DUK__MAX_OUTPUT_DIGITS -#undef DUK__NO_EXP -#undef DUK__NUMCONV_CTX_BIGINTS_SIZE -#undef DUK__NUMCONV_CTX_NUM_BIGINTS -#line 1 "duk_regexp_compiler.c" -/* - * Regexp compilation. - * - * See doc/regexp.rst for a discussion of the compilation approach and - * current limitations. - * - * Regexp bytecode assumes jumps can be expressed with signed 32-bit - * integers. Consequently the bytecode size must not exceed 0x7fffffffL. - * The implementation casts duk_size_t (buffer size) to duk_(u)int32_t - * in many places. Although this could be changed, the bytecode format - * limit would still prevent regexps exceeding the signed 32-bit limit - * from working. - * - * XXX: The implementation does not prevent bytecode from exceeding the - * maximum supported size. This could be done by limiting the maximum - * input string size (assuming an upper bound can be computed for number - * of bytecode bytes emitted per input byte) or checking buffer maximum - * size when emitting bytecode (slower). - */ - -/* #include duk_internal.h -> already included */ - -#if defined(DUK_USE_REGEXP_SUPPORT) - -/* - * Helper macros - */ - -#define DUK__RE_INITIAL_BUFSIZE 64 - -#define DUK__RE_BUFLEN(re_ctx) DUK_BW_GET_SIZE(re_ctx->thr, &re_ctx->bw) - -/* - * Disjunction struct: result of parsing a disjunction - */ - -typedef struct { - /* Number of characters that the atom matches (e.g. 3 for 'abc'), - * -1 if atom is complex and number of matched characters either - * varies or is not known. - */ - duk_int32_t charlen; - -#if 0 - /* These are not needed to implement quantifier capture handling, - * but might be needed at some point. - */ - - /* re_ctx->captures at start and end of atom parsing. - * Since 'captures' indicates highest capture number emitted - * so far in a DUK_REOP_SAVE, the captures numbers saved by - * the atom are: ]start_captures,end_captures]. - */ - duk_uint32_t start_captures; - duk_uint32_t end_captures; -#endif -} duk__re_disjunction_info; - -/* - * Encoding helpers - * - * Some of the typing is bytecode based, e.g. slice sizes are unsigned 32-bit - * even though the buffer operations will use duk_size_t. - */ - -/* XXX: the insert helpers should ensure that the bytecode result is not - * larger than expected (or at least assert for it). Many things in the - * bytecode, like skip offsets, won't work correctly if the bytecode is - * larger than say 2G. - */ - -DUK_LOCAL duk_uint32_t duk__encode_i32(duk_int32_t x) { - if (x < 0) { - return ((duk_uint32_t) (-x)) * 2 + 1; - } else { - return ((duk_uint32_t) x) * 2; - } -} - -/* XXX: return type should probably be duk_size_t, or explicit checks are needed for - * maximum size. - */ -DUK_LOCAL duk_uint32_t duk__insert_u32(duk_re_compiler_ctx *re_ctx, duk_uint32_t offset, duk_uint32_t x) { - duk_uint8_t buf[DUK_UNICODE_MAX_XUTF8_LENGTH]; - duk_small_int_t len; - - len = duk_unicode_encode_xutf8((duk_ucodepoint_t) x, buf); - DUK_ASSERT(len >= 0); - DUK_BW_INSERT_ENSURE_BYTES(re_ctx->thr, &re_ctx->bw, offset, buf, (duk_size_t) len); - return (duk_uint32_t) len; -} - -DUK_LOCAL void duk__append_u32(duk_re_compiler_ctx *re_ctx, duk_uint32_t x) { - DUK_BW_WRITE_ENSURE_XUTF8(re_ctx->thr, &re_ctx->bw, x); -} - -DUK_LOCAL void duk__append_7bit(duk_re_compiler_ctx *re_ctx, duk_uint32_t x) { -#if defined(DUK_USE_PREFER_SIZE) - duk__append_u32(re_ctx, x); -#else - DUK_ASSERT(x <= 0x7fU); - DUK_BW_WRITE_ENSURE_U8(re_ctx->thr, &re_ctx->bw, (duk_uint8_t) x); -#endif -} - -#if 0 -DUK_LOCAL void duk__append_2bytes(duk_re_compiler_ctx *re_ctx, duk_uint8_t x, duk_uint8_t y) { - DUK_BW_WRITE_ENSURE_U8_2(re_ctx->thr, &re_ctx->bw, x, y); -} -#endif - -DUK_LOCAL duk_uint32_t duk__insert_i32(duk_re_compiler_ctx *re_ctx, duk_uint32_t offset, duk_int32_t x) { - return duk__insert_u32(re_ctx, offset, duk__encode_i32(x)); -} - -DUK_LOCAL void duk__append_reop(duk_re_compiler_ctx *re_ctx, duk_uint32_t reop) { - DUK_ASSERT(reop <= 0x7fU); - (void) duk__append_7bit(re_ctx, reop); -} - -#if 0 /* unused */ -DUK_LOCAL void duk__append_i32(duk_re_compiler_ctx *re_ctx, duk_int32_t x) { - duk__append_u32(re_ctx, duk__encode_i32(x)); -} -#endif - -/* special helper for emitting u16 lists (used for character ranges for built-in char classes) */ -DUK_LOCAL void duk__append_u16_list(duk_re_compiler_ctx *re_ctx, const duk_uint16_t *values, duk_uint32_t count) { - /* Call sites don't need the result length so it's not accumulated. */ - while (count-- > 0) { - duk__append_u32(re_ctx, (duk_uint32_t) (*values++)); - } -} - -DUK_LOCAL void duk__insert_slice(duk_re_compiler_ctx *re_ctx, - duk_uint32_t offset, - duk_uint32_t data_offset, - duk_uint32_t data_length) { - DUK_BW_INSERT_ENSURE_SLICE(re_ctx->thr, &re_ctx->bw, offset, data_offset, data_length); -} - -DUK_LOCAL void duk__append_slice(duk_re_compiler_ctx *re_ctx, duk_uint32_t data_offset, duk_uint32_t data_length) { - DUK_BW_WRITE_ENSURE_SLICE(re_ctx->thr, &re_ctx->bw, data_offset, data_length); -} - -DUK_LOCAL void duk__remove_slice(duk_re_compiler_ctx *re_ctx, duk_uint32_t data_offset, duk_uint32_t data_length) { - DUK_BW_REMOVE_ENSURE_SLICE(re_ctx->thr, &re_ctx->bw, data_offset, data_length); -} - -/* - * Insert a jump offset at 'offset' to complete an instruction - * (the jump offset is always the last component of an instruction). - * The 'skip' argument must be computed relative to 'offset', - * -without- taking into account the skip field being inserted. - * - * ... A B C ins X Y Z ... (ins may be a JUMP, SPLIT1/SPLIT2, etc) - * => ... A B C ins SKIP X Y Z - * - * Computing the final (adjusted) skip value, which is relative to the - * first byte of the next instruction, is a bit tricky because of the - * variable length UTF-8 encoding. See doc/regexp.rst for discussion. - */ -DUK_LOCAL duk_uint32_t duk__insert_jump_offset(duk_re_compiler_ctx *re_ctx, duk_uint32_t offset, duk_int32_t skip) { -#if 0 - /* Iterative solution. */ - if (skip < 0) { - duk_small_int_t len; - /* two encoding attempts suffices */ - len = duk_unicode_get_xutf8_length((duk_codepoint_t) duk__encode_i32(skip)); - len = duk_unicode_get_xutf8_length((duk_codepoint_t) duk__encode_i32(skip - (duk_int32_t) len)); - DUK_ASSERT(duk_unicode_get_xutf8_length(duk__encode_i32(skip - (duk_int32_t) len)) == len); /* no change */ - skip -= (duk_int32_t) len; - } -#endif - -#if defined(DUK_USE_PREFER_SIZE) - /* Closed form solution, this produces smallest code. - * See re_neg_jump_offset (closed2). - */ - if (skip < 0) { - skip--; - if (skip < -0x3fL) { - skip--; - } - if (skip < -0x3ffL) { - skip--; - } - if (skip < -0x7fffL) { - skip--; - } - if (skip < -0xfffffL) { - skip--; - } - if (skip < -0x1ffffffL) { - skip--; - } - if (skip < -0x3fffffffL) { - skip--; - } - } -#else /* DUK_USE_PREFER_SIZE */ - /* Closed form solution, this produces fastest code. - * See re_neg_jump_offset (closed1). - */ - if (skip < 0) { - if (skip >= -0x3eL) { - skip -= 1; - } else if (skip >= -0x3fdL) { - skip -= 2; - } else if (skip >= -0x7ffcL) { - skip -= 3; - } else if (skip >= -0xffffbL) { - skip -= 4; - } else if (skip >= -0x1fffffaL) { - skip -= 5; - } else if (skip >= -0x3ffffff9L) { - skip -= 6; - } else { - skip -= 7; - } - } -#endif /* DUK_USE_PREFER_SIZE */ - - return duk__insert_i32(re_ctx, offset, skip); -} - -DUK_LOCAL duk_uint32_t duk__append_jump_offset(duk_re_compiler_ctx *re_ctx, duk_int32_t skip) { - return (duk_uint32_t) duk__insert_jump_offset(re_ctx, (duk_uint32_t) DUK__RE_BUFLEN(re_ctx), skip); -} - -/* - * duk_re_range_callback for generating character class ranges. - * - * When ignoreCase is false, the range is simply emitted as is. We don't, - * for instance, eliminate duplicates or overlapping ranges in a character - * class. - * - * When ignoreCase is true but the 'direct' flag is set, the caller knows - * that the range canonicalizes to itself for case insensitive matching, - * so the range is emitted as is. This is mainly useful for built-in ranges - * like \W. - * - * Otherwise, when ignoreCase is true, the range needs to be normalized - * through canonicalization. Unfortunately a canonicalized version of a - * continuous range is not necessarily continuous (e.g. [x-{] is continuous - * but [X-{] is not). As a result, a single input range may expand to a lot - * of output ranges. The current algorithm creates the canonicalized ranges - * footprint efficiently at the cost of compile time execution time; see - * doc/regexp.rst for discussion, and some more details below. - * - * Note that the ctx->nranges is a context-wide temporary value. This is OK - * because there cannot be multiple character classes being parsed - * simultaneously. - * - * More detail on canonicalization: - * - * Conceptually, a range is canonicalized by scanning the entire range, - * normalizing each codepoint by converting it to uppercase, and generating - * a set of result ranges. - * - * Ideally a minimal set of output ranges would be emitted by merging all - * possible ranges even if they're emitted out of sequence. Because the - * input string is also case normalized during matching, some codepoints - * never occur at runtime; these "don't care" codepoints can be included or - * excluded from ranges when merging/optimizing ranges. - * - * The current algorithm does not do optimal range merging. Rather, output - * codepoints are generated in sequence, and when the output codepoints are - * continuous (CP, CP+1, CP+2, ...), they are merged locally into as large a - * range as possible. A small canonicalization bitmap is used to reduce - * actual codepoint canonicalizations which are quite slow at present. The - * bitmap provides a "codepoint block is continuous with respect to - * canonicalization" for N-codepoint blocks. This allows blocks to be - * skipped quickly. - * - * There are a number of shortcomings and future work here: - * - * - Individual codepoint normalizations are slow because they involve - * walking bit-packed rules without a lookup index. - * - * - The conceptual algorithm needs to canonicalize every codepoint in the - * input range to figure out the output range(s). Even with the small - * canonicalization bitmap the algorithm runs quite slowly for worst case - * inputs. There are many data structure alternatives to improve this. - * - * - While the current algorithm generates maximal output ranges when the - * output codepoints are emitted linearly, output ranges are not sorted or - * merged otherwise. In the worst case a lot of ranges are emitted when - * most of the ranges could be merged. In this process one could take - * advantage of "don't care" codepoints, which are never matched against at - * runtime due to canonicalization of input codepoints before comparison, - * to merge otherwise discontinuous output ranges. - * - * - The runtime data structure is just a linear list of ranges to match - * against. This can be quite slow if there are a lot of output ranges. - * There are various ways to make matching against the ranges faster, - * e.g. sorting the ranges and using a binary search; skip lists; tree - * based representations; full or approximate codepoint bitmaps, etc. - * - * - Only BMP is supported, codepoints above BMP are assumed to canonicalize - * to themselves. For now this is one place where we don't want to - * support chars outside the BMP, because the exhaustive search would be - * massively larger. It would be possible to support non-BMP with a - * different algorithm, or perhaps doing case normalization only at match - * time. - */ - -DUK_LOCAL void duk__regexp_emit_range(duk_re_compiler_ctx *re_ctx, duk_codepoint_t r1, duk_codepoint_t r2) { - DUK_ASSERT(r2 >= r1); - duk__append_u32(re_ctx, (duk_uint32_t) r1); - duk__append_u32(re_ctx, (duk_uint32_t) r2); - re_ctx->nranges++; -} - -#if defined(DUK_USE_REGEXP_CANON_BITMAP) -/* Find next canonicalization discontinuity (conservative estimate) starting - * from 'start', not exceeding 'end'. If continuity is fine up to 'end' - * inclusive, returns end. Minimum possible return value is start. - */ -DUK_LOCAL duk_codepoint_t duk__re_canon_next_discontinuity(duk_codepoint_t start, duk_codepoint_t end) { - duk_uint_t start_blk; - duk_uint_t end_blk; - duk_uint_t blk; - duk_uint_t offset; - duk_uint8_t mask; - - /* Inclusive block range. */ - DUK_ASSERT(start >= 0); - DUK_ASSERT(end >= 0); - DUK_ASSERT(end >= start); - start_blk = (duk_uint_t) (start >> DUK_CANON_BITMAP_BLKSHIFT); - end_blk = (duk_uint_t) (end >> DUK_CANON_BITMAP_BLKSHIFT); - - for (blk = start_blk; blk <= end_blk; blk++) { - offset = blk >> 3; - mask = 1U << (blk & 0x07); - if (offset >= sizeof(duk_unicode_re_canon_bitmap)) { - /* Reached non-BMP range which is assumed continuous. */ - return end; - } - DUK_ASSERT(offset < sizeof(duk_unicode_re_canon_bitmap)); - if ((duk_unicode_re_canon_bitmap[offset] & mask) == 0) { - /* Block is discontinuous, continuity is guaranteed - * only up to end of previous block (+1 for exclusive - * return value => start of current block). Start - * block requires special handling. - */ - if (blk > start_blk) { - return (duk_codepoint_t) (blk << DUK_CANON_BITMAP_BLKSHIFT); - } else { - return start; - } - } - } - DUK_ASSERT(blk == end_blk + 1); /* Reached end block which is continuous. */ - return end; -} -#else /* DUK_USE_REGEXP_CANON_BITMAP */ -DUK_LOCAL duk_codepoint_t duk__re_canon_next_discontinuity(duk_codepoint_t start, duk_codepoint_t end) { - DUK_ASSERT(start >= 0); - DUK_ASSERT(end >= 0); - DUK_ASSERT(end >= start); - if (start >= 0x10000) { - /* Even without the bitmap, treat non-BMP as continuous. */ - return end; - } - return start; -} -#endif /* DUK_USE_REGEXP_CANON_BITMAP */ - -DUK_LOCAL void duk__regexp_generate_ranges(void *userdata, duk_codepoint_t r1, duk_codepoint_t r2, duk_bool_t direct) { - duk_re_compiler_ctx *re_ctx = (duk_re_compiler_ctx *) userdata; - duk_codepoint_t r_start; - duk_codepoint_t r_end; - duk_codepoint_t i; - duk_codepoint_t t; - duk_codepoint_t r_disc; - - DUK_DD(DUK_DDPRINT("duk__regexp_generate_ranges(): re_ctx=%p, range=[%ld,%ld] direct=%ld", - (void *) re_ctx, - (long) r1, - (long) r2, - (long) direct)); - - DUK_ASSERT(r2 >= r1); /* SyntaxError for out of order range. */ - - if (direct || (re_ctx->re_flags & DUK_RE_FLAG_IGNORE_CASE) == 0) { - DUK_DD(DUK_DDPRINT("direct or not case sensitive, emit range: [%ld,%ld]", (long) r1, (long) r2)); - duk__regexp_emit_range(re_ctx, r1, r2); - return; - } - - DUK_DD(DUK_DDPRINT("case sensitive, process range: [%ld,%ld]", (long) r1, (long) r2)); - - r_start = duk_unicode_re_canonicalize_char(re_ctx->thr, r1); - r_end = r_start; - - for (i = r1 + 1; i <= r2;) { - /* Input codepoint space processed up to i-1, and - * current range in r_{start,end} is up-to-date - * (inclusive) and may either break or continue. - */ - r_disc = duk__re_canon_next_discontinuity(i, r2); - DUK_ASSERT(r_disc >= i); - DUK_ASSERT(r_disc <= r2); - - r_end += r_disc - i; /* May be zero. */ - t = duk_unicode_re_canonicalize_char(re_ctx->thr, r_disc); - if (t == r_end + 1) { - /* Not actually a discontinuity, continue range - * to r_disc and recheck. - */ - r_end = t; - } else { - duk__regexp_emit_range(re_ctx, r_start, r_end); - r_start = t; - r_end = t; - } - i = r_disc + 1; /* Guarantees progress. */ - } - duk__regexp_emit_range(re_ctx, r_start, r_end); - -#if 0 /* Exhaustive search, very slow. */ - r_start = duk_unicode_re_canonicalize_char(re_ctx->thr, r1); - r_end = r_start; - for (i = r1 + 1; i <= r2; i++) { - t = duk_unicode_re_canonicalize_char(re_ctx->thr, i); - if (t == r_end + 1) { - r_end = t; - } else { - DUK_DD(DUK_DDPRINT("canonicalized, emit range: [%ld,%ld]", (long) r_start, (long) r_end)); - duk__append_u32(re_ctx, (duk_uint32_t) r_start); - duk__append_u32(re_ctx, (duk_uint32_t) r_end); - re_ctx->nranges++; - r_start = t; - r_end = t; - } - } - DUK_DD(DUK_DDPRINT("canonicalized, emit range: [%ld,%ld]", (long) r_start, (long) r_end)); - duk__append_u32(re_ctx, (duk_uint32_t) r_start); - duk__append_u32(re_ctx, (duk_uint32_t) r_end); - re_ctx->nranges++; -#endif -} - -/* - * Parse regexp Disjunction. Most of regexp compilation happens here. - * - * Handles Disjunction, Alternative, and Term productions directly without - * recursion. The only constructs requiring recursion are positive/negative - * lookaheads, capturing parentheses, and non-capturing parentheses. - * - * The function determines whether the entire disjunction is a 'simple atom' - * (see doc/regexp.rst discussion on 'simple quantifiers') and if so, - * returns the atom character length which is needed by the caller to keep - * track of its own atom character length. A disjunction with more than one - * alternative is never considered a simple atom (although in some cases - * that might be the case). - * - * Return value: simple atom character length or < 0 if not a simple atom. - * Appends the bytecode for the disjunction matcher to the end of the temp - * buffer. - * - * Regexp top level structure is: - * - * Disjunction = Term* - * | Term* | Disjunction - * - * Term = Assertion - * | Atom - * | Atom Quantifier - * - * An empty Term sequence is a valid disjunction alternative (e.g. /|||c||/). - * - * Notes: - * - * * Tracking of the 'simple-ness' of the current atom vs. the entire - * disjunction are separate matters. For instance, the disjunction - * may be complex, but individual atoms may be simple. Furthermore, - * simple quantifiers are used whenever possible, even if the - * disjunction as a whole is complex. - * - * * The estimate of whether an atom is simple is conservative now, - * and it would be possible to expand it. For instance, captures - * cause the disjunction to be marked complex, even though captures - * -can- be handled by simple quantifiers with some minor modifications. - * - * * Disjunction 'tainting' as 'complex' is handled at the end of the - * main for loop collectively for atoms. Assertions, quantifiers, - * and '|' tokens need to taint the result manually if necessary. - * Assertions cannot add to result char length, only atoms (and - * quantifiers) can; currently quantifiers will taint the result - * as complex though. - */ - -DUK_LOCAL const duk_uint16_t * const duk__re_range_lookup1[3] = { duk_unicode_re_ranges_digit, - duk_unicode_re_ranges_white, - duk_unicode_re_ranges_wordchar }; -DUK_LOCAL const duk_uint8_t duk__re_range_lookup2[3] = { sizeof(duk_unicode_re_ranges_digit) / (2 * sizeof(duk_uint16_t)), - sizeof(duk_unicode_re_ranges_white) / (2 * sizeof(duk_uint16_t)), - sizeof(duk_unicode_re_ranges_wordchar) / (2 * sizeof(duk_uint16_t)) }; - -DUK_LOCAL void duk__append_range_atom_matcher(duk_re_compiler_ctx *re_ctx, - duk_small_uint_t re_op, - const duk_uint16_t *ranges, - duk_small_uint_t count) { -#if 0 - DUK_ASSERT(re_op <= 0x7fUL); - DUK_ASSERT(count <= 0x7fUL); - duk__append_2bytes(re_ctx, (duk_uint8_t) re_op, (duk_uint8_t) count); -#endif - duk__append_reop(re_ctx, re_op); - duk__append_7bit(re_ctx, count); - duk__append_u16_list(re_ctx, ranges, count * 2); -} - -DUK_LOCAL void duk__parse_disjunction(duk_re_compiler_ctx *re_ctx, duk_bool_t expect_eof, duk__re_disjunction_info *out_atom_info) { - duk_int32_t atom_start_offset = -1; /* negative -> no atom matched on previous round */ - duk_int32_t atom_char_length = 0; /* negative -> complex atom */ - duk_uint32_t atom_start_captures = re_ctx->captures; /* value of re_ctx->captures at start of atom */ - duk_int32_t unpatched_disjunction_split = -1; - duk_int32_t unpatched_disjunction_jump = -1; - duk_uint32_t entry_offset = (duk_uint32_t) DUK__RE_BUFLEN(re_ctx); - duk_int32_t res_charlen = 0; /* -1 if disjunction is complex, char length if simple */ - duk__re_disjunction_info tmp_disj; - - DUK_ASSERT(out_atom_info != NULL); - - duk_native_stack_check(re_ctx->thr); - if (re_ctx->recursion_depth >= re_ctx->recursion_limit) { - DUK_ERROR_RANGE(re_ctx->thr, DUK_STR_REGEXP_COMPILER_RECURSION_LIMIT); - DUK_WO_NORETURN(return;); - } - re_ctx->recursion_depth++; - -#if 0 - out_atom_info->start_captures = re_ctx->captures; -#endif - - for (;;) { - /* atom_char_length, atom_start_offset, atom_start_offset reflect the - * atom matched on the previous loop. If a quantifier is encountered - * on this loop, these are needed to handle the quantifier correctly. - * new_atom_char_length etc are for the atom parsed on this round; - * they're written to atom_char_length etc at the end of the round. - */ - duk_int32_t new_atom_char_length; /* char length of the atom parsed in this loop */ - duk_int32_t new_atom_start_offset; /* bytecode start offset of the atom parsed in this loop - * (allows quantifiers to copy the atom bytecode) - */ - duk_uint32_t new_atom_start_captures; /* re_ctx->captures at the start of the atom parsed in this loop */ - - duk_lexer_parse_re_token(&re_ctx->lex, &re_ctx->curr_token); - - DUK_DD(DUK_DDPRINT( - "re token: %ld (num=%ld, char=%c)", - (long) re_ctx->curr_token.t, - (long) re_ctx->curr_token.num, - (re_ctx->curr_token.num >= 0x20 && re_ctx->curr_token.num <= 0x7e) ? (int) re_ctx->curr_token.num : (int) '?')); - - /* set by atom case clauses */ - new_atom_start_offset = -1; - new_atom_char_length = -1; - new_atom_start_captures = re_ctx->captures; - - switch (re_ctx->curr_token.t) { - case DUK_RETOK_DISJUNCTION: { - /* - * The handling here is a bit tricky. If a previous '|' has been processed, - * we have a pending split1 and a pending jump (for a previous match). These - * need to be back-patched carefully. See docs for a detailed example. - */ - - /* patch pending jump and split */ - if (unpatched_disjunction_jump >= 0) { - duk_uint32_t offset; - - DUK_ASSERT(unpatched_disjunction_split >= 0); - offset = (duk_uint32_t) unpatched_disjunction_jump; - offset += duk__insert_jump_offset(re_ctx, offset, (duk_int32_t) (DUK__RE_BUFLEN(re_ctx) - offset)); - /* offset is now target of the pending split (right after jump) */ - duk__insert_jump_offset(re_ctx, - (duk_uint32_t) unpatched_disjunction_split, - (duk_int32_t) offset - unpatched_disjunction_split); - } - - /* add a new pending split to the beginning of the entire disjunction */ - (void) duk__insert_u32(re_ctx, entry_offset, DUK_REOP_SPLIT1); /* prefer direct execution */ - unpatched_disjunction_split = (duk_int32_t) (entry_offset + 1); /* +1 for opcode */ - - /* add a new pending match jump for latest finished alternative */ - duk__append_reop(re_ctx, DUK_REOP_JUMP); - unpatched_disjunction_jump = (duk_int32_t) DUK__RE_BUFLEN(re_ctx); - - /* 'taint' result as complex */ - res_charlen = -1; - break; - } - case DUK_RETOK_QUANTIFIER: { - if (atom_start_offset < 0) { - DUK_ERROR_SYNTAX(re_ctx->thr, DUK_STR_INVALID_QUANTIFIER_NO_ATOM); - DUK_WO_NORETURN(return;); - } - if (re_ctx->curr_token.qmin > re_ctx->curr_token.qmax) { - DUK_ERROR_SYNTAX(re_ctx->thr, DUK_STR_INVALID_QUANTIFIER_VALUES); - DUK_WO_NORETURN(return;); - } - if (atom_char_length >= 0) { - /* - * Simple atom - * - * If atom_char_length is zero, we'll have unbounded execution time for e.g. - * /()*x/.exec('x'). We can't just skip the match because it might have some - * side effects (for instance, if we allowed captures in simple atoms, the - * capture needs to happen). The simple solution below is to force the - * quantifier to match at most once, since the additional matches have no effect. - * - * With a simple atom there can be no capture groups, so no captures need - * to be reset. - */ - duk_int32_t atom_code_length; - duk_uint32_t offset; - duk_uint32_t qmin, qmax; - - qmin = re_ctx->curr_token.qmin; - qmax = re_ctx->curr_token.qmax; - if (atom_char_length == 0) { - /* qmin and qmax will be 0 or 1 */ - if (qmin > 1) { - qmin = 1; - } - if (qmax > 1) { - qmax = 1; - } - } - - duk__append_reop(re_ctx, DUK_REOP_MATCH); /* complete 'sub atom' */ - atom_code_length = (duk_int32_t) (DUK__RE_BUFLEN(re_ctx) - (duk_size_t) atom_start_offset); - - offset = (duk_uint32_t) atom_start_offset; - if (re_ctx->curr_token.greedy) { - offset += duk__insert_u32(re_ctx, offset, DUK_REOP_SQGREEDY); - offset += duk__insert_u32(re_ctx, offset, qmin); - offset += duk__insert_u32(re_ctx, offset, qmax); - offset += duk__insert_u32(re_ctx, offset, (duk_uint32_t) atom_char_length); - offset += duk__insert_jump_offset(re_ctx, offset, atom_code_length); - } else { - offset += duk__insert_u32(re_ctx, offset, DUK_REOP_SQMINIMAL); - offset += duk__insert_u32(re_ctx, offset, qmin); - offset += duk__insert_u32(re_ctx, offset, qmax); - offset += duk__insert_jump_offset(re_ctx, offset, atom_code_length); - } - DUK_UNREF(offset); /* silence scan-build warning */ - } else { - /* - * Complex atom - * - * The original code is used as a template, and removed at the end - * (this differs from the handling of simple quantifiers). - * - * NOTE: there is no current solution for empty atoms in complex - * quantifiers. This would need some sort of a 'progress' instruction. - * - * XXX: impose limit on maximum result size, i.e. atom_code_len * atom_copies? - */ - duk_int32_t atom_code_length; - duk_uint32_t atom_copies; - duk_uint32_t tmp_qmin, tmp_qmax; - - /* pre-check how many atom copies we're willing to make (atom_copies not needed below) */ - atom_copies = (re_ctx->curr_token.qmax == DUK_RE_QUANTIFIER_INFINITE) ? re_ctx->curr_token.qmin : - re_ctx->curr_token.qmax; - if (atom_copies > DUK_RE_MAX_ATOM_COPIES) { - DUK_ERROR_RANGE(re_ctx->thr, DUK_STR_QUANTIFIER_TOO_MANY_COPIES); - DUK_WO_NORETURN(return;); - } - - /* wipe the capture range made by the atom (if any) */ - DUK_ASSERT(atom_start_captures <= re_ctx->captures); - if (atom_start_captures != re_ctx->captures) { - DUK_ASSERT(atom_start_captures < re_ctx->captures); - DUK_DDD(DUK_DDDPRINT("must wipe ]atom_start_captures,re_ctx->captures]: ]%ld,%ld]", - (long) atom_start_captures, - (long) re_ctx->captures)); - - /* insert (DUK_REOP_WIPERANGE, start, count) in reverse order so the order ends up right */ - duk__insert_u32(re_ctx, - (duk_uint32_t) atom_start_offset, - (re_ctx->captures - atom_start_captures) * 2U); - duk__insert_u32(re_ctx, (duk_uint32_t) atom_start_offset, (atom_start_captures + 1) * 2); - duk__insert_u32(re_ctx, (duk_uint32_t) atom_start_offset, DUK_REOP_WIPERANGE); - } else { - DUK_DDD( - DUK_DDDPRINT("no need to wipe captures: atom_start_captures == re_ctx->captures == %ld", - (long) atom_start_captures)); - } - - atom_code_length = (duk_int32_t) DUK__RE_BUFLEN(re_ctx) - atom_start_offset; - - /* insert the required matches (qmin) by copying the atom */ - tmp_qmin = re_ctx->curr_token.qmin; - tmp_qmax = re_ctx->curr_token.qmax; - while (tmp_qmin > 0) { - duk__append_slice(re_ctx, - (duk_uint32_t) atom_start_offset, - (duk_uint32_t) atom_code_length); - tmp_qmin--; - if (tmp_qmax != DUK_RE_QUANTIFIER_INFINITE) { - tmp_qmax--; - } - } - DUK_ASSERT(tmp_qmin == 0); - - /* insert code for matching the remainder - infinite or finite */ - if (tmp_qmax == DUK_RE_QUANTIFIER_INFINITE) { - /* reuse last emitted atom for remaining 'infinite' quantifier */ - - if (re_ctx->curr_token.qmin == 0) { - /* Special case: original qmin was zero so there is nothing - * to repeat. Emit an atom copy but jump over it here. - */ - duk__append_reop(re_ctx, DUK_REOP_JUMP); - duk__append_jump_offset(re_ctx, atom_code_length); - duk__append_slice(re_ctx, - (duk_uint32_t) atom_start_offset, - (duk_uint32_t) atom_code_length); - } - if (re_ctx->curr_token.greedy) { - duk__append_reop(re_ctx, DUK_REOP_SPLIT2); /* prefer jump */ - } else { - duk__append_reop(re_ctx, DUK_REOP_SPLIT1); /* prefer direct */ - } - duk__append_jump_offset(re_ctx, -atom_code_length - 1); /* -1 for opcode */ - } else { - /* - * The remaining matches are emitted as sequence of SPLITs and atom - * copies; the SPLITs skip the remaining copies and match the sequel. - * This sequence needs to be emitted starting from the last copy - * because the SPLITs are variable length due to the variable length - * skip offset. This causes a lot of memory copying now. - * - * Example structure (greedy, match maximum # atoms): - * - * SPLIT1 LSEQ - * (atom) - * SPLIT1 LSEQ ; <- the byte length of this instruction is needed - * (atom) ; to encode the above SPLIT1 correctly - * ... - * LSEQ: - */ - duk_uint32_t offset = (duk_uint32_t) DUK__RE_BUFLEN(re_ctx); - while (tmp_qmax > 0) { - duk__insert_slice(re_ctx, - offset, - (duk_uint32_t) atom_start_offset, - (duk_uint32_t) atom_code_length); - if (re_ctx->curr_token.greedy) { - duk__insert_u32(re_ctx, offset, DUK_REOP_SPLIT1); /* prefer direct */ - } else { - duk__insert_u32(re_ctx, offset, DUK_REOP_SPLIT2); /* prefer jump */ - } - duk__insert_jump_offset(re_ctx, - offset + 1, /* +1 for opcode */ - (duk_int32_t) (DUK__RE_BUFLEN(re_ctx) - (offset + 1))); - tmp_qmax--; - } - } - - /* remove the original 'template' atom */ - duk__remove_slice(re_ctx, (duk_uint32_t) atom_start_offset, (duk_uint32_t) atom_code_length); - } - - /* 'taint' result as complex */ - res_charlen = -1; - break; - } - case DUK_RETOK_ASSERT_START: { - duk__append_reop(re_ctx, DUK_REOP_ASSERT_START); - break; - } - case DUK_RETOK_ASSERT_END: { - duk__append_reop(re_ctx, DUK_REOP_ASSERT_END); - break; - } - case DUK_RETOK_ASSERT_WORD_BOUNDARY: { - duk__append_reop(re_ctx, DUK_REOP_ASSERT_WORD_BOUNDARY); - break; - } - case DUK_RETOK_ASSERT_NOT_WORD_BOUNDARY: { - duk__append_reop(re_ctx, DUK_REOP_ASSERT_NOT_WORD_BOUNDARY); - break; - } - case DUK_RETOK_ASSERT_START_POS_LOOKAHEAD: - case DUK_RETOK_ASSERT_START_NEG_LOOKAHEAD: { - duk_uint32_t offset; - duk_uint32_t opcode = - (re_ctx->curr_token.t == DUK_RETOK_ASSERT_START_POS_LOOKAHEAD) ? DUK_REOP_LOOKPOS : DUK_REOP_LOOKNEG; - - offset = (duk_uint32_t) DUK__RE_BUFLEN(re_ctx); - duk__parse_disjunction(re_ctx, 0, &tmp_disj); - duk__append_reop(re_ctx, DUK_REOP_MATCH); - - (void) duk__insert_u32(re_ctx, offset, opcode); - (void) duk__insert_jump_offset(re_ctx, - offset + 1, /* +1 for opcode */ - (duk_int32_t) (DUK__RE_BUFLEN(re_ctx) - (offset + 1))); - - /* 'taint' result as complex -- this is conservative, - * as lookaheads do not backtrack. - */ - res_charlen = -1; - break; - } - case DUK_RETOK_ATOM_PERIOD: { - new_atom_char_length = 1; - new_atom_start_offset = (duk_int32_t) DUK__RE_BUFLEN(re_ctx); - duk__append_reop(re_ctx, DUK_REOP_PERIOD); - break; - } - case DUK_RETOK_ATOM_CHAR: { - /* Note: successive characters could be joined into string matches - * but this is not trivial (consider e.g. '/xyz+/); see docs for - * more discussion. - * - * No support for \u{H+} yet. While only BMP Unicode escapes are - * supported for RegExps at present, 'ch' may still be a non-BMP - * codepoint if it is decoded straight from source text UTF-8. - * There's no non-BMP support yet so this is handled simply by - * matching the non-BMP character (which is custom behavior). - */ - duk_uint32_t ch; - - new_atom_char_length = 1; - new_atom_start_offset = (duk_int32_t) DUK__RE_BUFLEN(re_ctx); - duk__append_reop(re_ctx, DUK_REOP_CHAR); - ch = re_ctx->curr_token.num; - if (re_ctx->re_flags & DUK_RE_FLAG_IGNORE_CASE) { - ch = (duk_uint32_t) duk_unicode_re_canonicalize_char(re_ctx->thr, (duk_codepoint_t) ch); - } - duk__append_u32(re_ctx, ch); - break; - } - case DUK_RETOK_ATOM_DIGIT: - case DUK_RETOK_ATOM_NOT_DIGIT: - case DUK_RETOK_ATOM_WHITE: - case DUK_RETOK_ATOM_NOT_WHITE: - case DUK_RETOK_ATOM_WORD_CHAR: - case DUK_RETOK_ATOM_NOT_WORD_CHAR: { - duk_small_uint_t re_op; - duk_small_uint_t idx; - - new_atom_char_length = 1; - new_atom_start_offset = (duk_int32_t) DUK__RE_BUFLEN(re_ctx); - - DUK_ASSERT((DUK_RETOK_ATOM_DIGIT & 0x01) != 0); - DUK_ASSERT((DUK_RETOK_ATOM_WHITE & 0x01) != 0); - DUK_ASSERT((DUK_RETOK_ATOM_WORD_CHAR & 0x01) != 0); - DUK_ASSERT((DUK_RETOK_ATOM_NOT_DIGIT & 0x01) == 0); - DUK_ASSERT((DUK_RETOK_ATOM_NOT_WHITE & 0x01) == 0); - DUK_ASSERT((DUK_RETOK_ATOM_NOT_WORD_CHAR & 0x01) == 0); - re_op = (re_ctx->curr_token.t & 0x01) ? DUK_REOP_RANGES : DUK_REOP_INVRANGES; - - DUK_ASSERT(DUK_RETOK_ATOM_WHITE == DUK_RETOK_ATOM_DIGIT + 2); - DUK_ASSERT(DUK_RETOK_ATOM_WORD_CHAR == DUK_RETOK_ATOM_DIGIT + 4); - idx = (duk_small_uint_t) ((re_ctx->curr_token.t - DUK_RETOK_ATOM_DIGIT) >> 1U); - DUK_ASSERT(idx <= 2U); /* Assume continuous token numbers; also checks negative underflow. */ - - duk__append_range_atom_matcher(re_ctx, re_op, duk__re_range_lookup1[idx], duk__re_range_lookup2[idx]); - break; - } - case DUK_RETOK_ATOM_BACKREFERENCE: { - duk_uint32_t backref = (duk_uint32_t) re_ctx->curr_token.num; - if (backref > re_ctx->highest_backref) { - re_ctx->highest_backref = backref; - } - new_atom_char_length = -1; /* mark as complex */ - new_atom_start_offset = (duk_int32_t) DUK__RE_BUFLEN(re_ctx); - duk__append_reop(re_ctx, DUK_REOP_BACKREFERENCE); - duk__append_u32(re_ctx, backref); - break; - } - case DUK_RETOK_ATOM_START_CAPTURE_GROUP: { - duk_uint32_t cap; - - new_atom_char_length = -1; /* mark as complex (capture handling) */ - new_atom_start_offset = (duk_int32_t) DUK__RE_BUFLEN(re_ctx); - cap = ++re_ctx->captures; - duk__append_reop(re_ctx, DUK_REOP_SAVE); - duk__append_u32(re_ctx, cap * 2); - duk__parse_disjunction(re_ctx, - 0, - &tmp_disj); /* retval (sub-atom char length) unused, tainted as complex above */ - duk__append_reop(re_ctx, DUK_REOP_SAVE); - duk__append_u32(re_ctx, cap * 2 + 1); - break; - } - case DUK_RETOK_ATOM_START_NONCAPTURE_GROUP: { - new_atom_start_offset = (duk_int32_t) DUK__RE_BUFLEN(re_ctx); - duk__parse_disjunction(re_ctx, 0, &tmp_disj); - new_atom_char_length = tmp_disj.charlen; - break; - } - case DUK_RETOK_ATOM_START_CHARCLASS: - case DUK_RETOK_ATOM_START_CHARCLASS_INVERTED: { - /* - * Range parsing is done with a special lexer function which calls - * us for every range parsed. This is different from how rest of - * the parsing works, but avoids a heavy, arbitrary size intermediate - * value type to hold the ranges. - * - * Another complication is the handling of character ranges when - * case insensitive matching is used (see docs for discussion). - * The range handler callback given to the lexer takes care of this - * as well. - * - * Note that duplicate ranges are not eliminated when parsing character - * classes, so that canonicalization of - * - * [0-9a-fA-Fx-{] - * - * creates the result (note the duplicate ranges): - * - * [0-9A-FA-FX-Z{-{] - * - * where [x-{] is split as a result of canonicalization. The duplicate - * ranges are not a semantics issue: they work correctly. - */ - - duk_uint32_t offset; - - DUK_DD(DUK_DDPRINT("character class")); - - /* insert ranges instruction, range count patched in later */ - new_atom_char_length = 1; - new_atom_start_offset = (duk_int32_t) DUK__RE_BUFLEN(re_ctx); - duk__append_reop(re_ctx, - (re_ctx->curr_token.t == DUK_RETOK_ATOM_START_CHARCLASS) ? DUK_REOP_RANGES : - DUK_REOP_INVRANGES); - offset = (duk_uint32_t) DUK__RE_BUFLEN(re_ctx); /* patch in range count later */ - - /* parse ranges until character class ends */ - re_ctx->nranges = 0; /* note: ctx-wide temporary */ - duk_lexer_parse_re_ranges(&re_ctx->lex, duk__regexp_generate_ranges, (void *) re_ctx); - - /* insert range count */ - duk__insert_u32(re_ctx, offset, re_ctx->nranges); - break; - } - case DUK_RETOK_ATOM_END_GROUP: { - if (expect_eof) { - DUK_ERROR_SYNTAX(re_ctx->thr, DUK_STR_UNEXPECTED_CLOSING_PAREN); - DUK_WO_NORETURN(return;); - } - goto done; - } - case DUK_RETOK_EOF: { - if (!expect_eof) { - DUK_ERROR_SYNTAX(re_ctx->thr, DUK_STR_UNEXPECTED_END_OF_PATTERN); - DUK_WO_NORETURN(return;); - } - goto done; - } - default: { - DUK_ERROR_SYNTAX(re_ctx->thr, DUK_STR_UNEXPECTED_REGEXP_TOKEN); - DUK_WO_NORETURN(return;); - } - } - - /* a complex (new) atom taints the result */ - if (new_atom_start_offset >= 0) { - if (new_atom_char_length < 0) { - res_charlen = -1; - } else if (res_charlen >= 0) { - /* only advance if not tainted */ - res_charlen += new_atom_char_length; - } - } - - /* record previous atom info in case next token is a quantifier */ - atom_start_offset = new_atom_start_offset; - atom_char_length = new_atom_char_length; - atom_start_captures = new_atom_start_captures; - } - -done: - - /* finish up pending jump and split for last alternative */ - if (unpatched_disjunction_jump >= 0) { - duk_uint32_t offset; - - DUK_ASSERT(unpatched_disjunction_split >= 0); - offset = (duk_uint32_t) unpatched_disjunction_jump; - offset += duk__insert_jump_offset(re_ctx, offset, (duk_int32_t) (DUK__RE_BUFLEN(re_ctx) - offset)); - /* offset is now target of the pending split (right after jump) */ - duk__insert_jump_offset(re_ctx, - (duk_uint32_t) unpatched_disjunction_split, - (duk_int32_t) offset - unpatched_disjunction_split); - } - -#if 0 - out_atom_info->end_captures = re_ctx->captures; -#endif - out_atom_info->charlen = res_charlen; - DUK_DDD(DUK_DDDPRINT("parse disjunction finished: charlen=%ld", (long) out_atom_info->charlen)); - - re_ctx->recursion_depth--; -} - -/* - * Flags parsing (see E5 Section 15.10.4.1). - */ - -DUK_LOCAL duk_uint32_t duk__parse_regexp_flags(duk_hthread *thr, duk_hstring *h) { - const duk_uint8_t *p; - const duk_uint8_t *p_end; - duk_uint32_t flags = 0; - - p = DUK_HSTRING_GET_DATA(h); - p_end = p + DUK_HSTRING_GET_BYTELEN(h); - - /* Note: can be safely scanned as bytes (undecoded) */ - - while (p < p_end) { - duk_uint8_t c = *p++; - switch (c) { - case (duk_uint8_t) 'g': { - if (flags & DUK_RE_FLAG_GLOBAL) { - goto flags_error; - } - flags |= DUK_RE_FLAG_GLOBAL; - break; - } - case (duk_uint8_t) 'i': { - if (flags & DUK_RE_FLAG_IGNORE_CASE) { - goto flags_error; - } - flags |= DUK_RE_FLAG_IGNORE_CASE; - break; - } - case (duk_uint8_t) 'm': { - if (flags & DUK_RE_FLAG_MULTILINE) { - goto flags_error; - } - flags |= DUK_RE_FLAG_MULTILINE; - break; - } - default: { - goto flags_error; - } - } - } - - return flags; - -flags_error: - DUK_ERROR_SYNTAX(thr, DUK_STR_INVALID_REGEXP_FLAGS); - DUK_WO_NORETURN(return 0U;); -} - -/* - * Create escaped RegExp source (E5 Section 15.10.3). - * - * The current approach is to special case the empty RegExp - * ('' -> '(?:)') and otherwise replace unescaped '/' characters - * with '\/' regardless of where they occur in the regexp. - * - * Note that normalization does not seem to be necessary for - * RegExp literals (e.g. '/foo/') because to be acceptable as - * a RegExp literal, the text between forward slashes must - * already match the escaping requirements (e.g. must not contain - * unescaped forward slashes or be empty). Escaping IS needed - * for expressions like 'new Regexp("...", "")' however. - * Currently, we re-escape in either case. - * - * Also note that we process the source here in UTF-8 encoded - * form. This is correct, because any non-ASCII characters are - * passed through without change. - */ - -DUK_LOCAL void duk__create_escaped_source(duk_hthread *thr, int idx_pattern) { - duk_hstring *h; - const duk_uint8_t *p; - duk_bufwriter_ctx bw_alloc; - duk_bufwriter_ctx *bw; - duk_uint8_t *q; - duk_size_t i, n; - duk_uint_fast8_t c_prev, c; - - h = duk_known_hstring(thr, idx_pattern); - p = (const duk_uint8_t *) DUK_HSTRING_GET_DATA(h); - n = (duk_size_t) DUK_HSTRING_GET_BYTELEN(h); - - if (n == 0) { - duk_push_literal(thr, "(?:)"); - return; - } - - bw = &bw_alloc; - DUK_BW_INIT_PUSHBUF(thr, bw, n); - q = DUK_BW_GET_PTR(thr, bw); - - c_prev = (duk_uint_fast8_t) 0; - - for (i = 0; i < n; i++) { - c = p[i]; - - q = DUK_BW_ENSURE_RAW(thr, bw, 2, q); - - if (c == (duk_uint_fast8_t) '/' && c_prev != (duk_uint_fast8_t) '\\') { - /* Unescaped '/' ANYWHERE in the regexp (in disjunction, - * inside a character class, ...) => same escape works. - */ - *q++ = DUK_ASC_BACKSLASH; - } - *q++ = (duk_uint8_t) c; - - c_prev = c; - } - - DUK_BW_SETPTR_AND_COMPACT(thr, bw, q); - (void) duk_buffer_to_string(thr, -1); /* Safe if input is safe. */ - - /* [ ... escaped_source ] */ -} - -/* - * Exposed regexp compilation primitive. - * - * Sets up a regexp compilation context, and calls duk__parse_disjunction() to do the - * actual parsing. Handles generation of the compiled regexp header and the - * "boilerplate" capture of the matching substring (save 0 and 1). Also does some - * global level regexp checks after recursive compilation has finished. - * - * An escaped version of the regexp source, suitable for use as a RegExp instance - * 'source' property (see E5 Section 15.10.3), is also left on the stack. - * - * Input stack: [ pattern flags ] - * Output stack: [ bytecode escaped_source ] (both as strings) - */ - -DUK_INTERNAL void duk_regexp_compile(duk_hthread *thr) { - duk_re_compiler_ctx re_ctx; - duk_lexer_point lex_point; - duk_hstring *h_pattern; - duk_hstring *h_flags; - duk__re_disjunction_info ign_disj; - - DUK_ASSERT(thr != NULL); - - /* - * Args validation - */ - - /* TypeError if fails */ - h_pattern = duk_require_hstring_notsymbol(thr, -2); - h_flags = duk_require_hstring_notsymbol(thr, -1); - - /* - * Create normalized 'source' property (E5 Section 15.10.3). - */ - - /* [ ... pattern flags ] */ - - duk__create_escaped_source(thr, -2); - - /* [ ... pattern flags escaped_source ] */ - - /* - * Init compilation context - */ - - /* [ ... pattern flags escaped_source buffer ] */ - - duk_memzero(&re_ctx, sizeof(re_ctx)); - DUK_LEXER_INITCTX(&re_ctx.lex); /* duplicate zeroing, expect for (possible) NULL inits */ - re_ctx.thr = thr; - re_ctx.lex.thr = thr; - re_ctx.lex.input = DUK_HSTRING_GET_DATA(h_pattern); - re_ctx.lex.input_length = DUK_HSTRING_GET_BYTELEN(h_pattern); - re_ctx.lex.token_limit = DUK_RE_COMPILE_TOKEN_LIMIT; - re_ctx.recursion_limit = DUK_USE_REGEXP_COMPILER_RECLIMIT; - re_ctx.re_flags = duk__parse_regexp_flags(thr, h_flags); - - DUK_BW_INIT_PUSHBUF(thr, &re_ctx.bw, DUK__RE_INITIAL_BUFSIZE); - - DUK_DD(DUK_DDPRINT("regexp compiler ctx initialized, flags=0x%08lx, recursion_limit=%ld", - (unsigned long) re_ctx.re_flags, - (long) re_ctx.recursion_limit)); - - /* - * Init lexer - */ - - lex_point.offset = 0; /* expensive init, just want to fill window */ - lex_point.line = 1; - DUK_LEXER_SETPOINT(&re_ctx.lex, &lex_point); - - /* - * Compilation - */ - - DUK_DD(DUK_DDPRINT("starting regexp compilation")); - - duk__append_reop(&re_ctx, DUK_REOP_SAVE); - duk__append_7bit(&re_ctx, 0); - duk__parse_disjunction(&re_ctx, 1 /*expect_eof*/, &ign_disj); - duk__append_reop(&re_ctx, DUK_REOP_SAVE); - duk__append_7bit(&re_ctx, 1); - duk__append_reop(&re_ctx, DUK_REOP_MATCH); - - /* - * Check for invalid backreferences; note that it is NOT an error - * to back-reference a capture group which has not yet been introduced - * in the pattern (as in /\1(foo)/); in fact, the backreference will - * always match! It IS an error to back-reference a capture group - * which will never be introduced in the pattern. Thus, we can check - * for such references only after parsing is complete. - */ - - if (re_ctx.highest_backref > re_ctx.captures) { - DUK_ERROR_SYNTAX(thr, DUK_STR_INVALID_BACKREFS); - DUK_WO_NORETURN(return;); - } - - /* - * Emit compiled regexp header: flags, ncaptures - * (insertion order inverted on purpose) - */ - - duk__insert_u32(&re_ctx, 0, (re_ctx.captures + 1) * 2); - duk__insert_u32(&re_ctx, 0, re_ctx.re_flags); - - /* [ ... pattern flags escaped_source buffer ] */ - - DUK_BW_COMPACT(thr, &re_ctx.bw); - (void) duk_buffer_to_string(thr, -1); /* Safe because flags is at most 7 bit. */ - - /* [ ... pattern flags escaped_source bytecode ] */ - - /* - * Finalize stack - */ - - duk_remove(thr, -4); /* -> [ ... flags escaped_source bytecode ] */ - duk_remove(thr, -3); /* -> [ ... escaped_source bytecode ] */ - - DUK_DD(DUK_DDPRINT("regexp compilation successful, bytecode: %!T, escaped source: %!T", - (duk_tval *) duk_get_tval(thr, -1), - (duk_tval *) duk_get_tval(thr, -2))); -} - -/* - * Create a RegExp instance (E5 Section 15.10.7). - * - * Note: the output stack left by duk_regexp_compile() is directly compatible - * with the input here. - * - * Input stack: [ escaped_source bytecode ] (both as strings) - * Output stack: [ RegExp ] - */ - -DUK_INTERNAL void duk_regexp_create_instance(duk_hthread *thr) { - duk_hobject *h; - - /* [ ... escaped_source bytecode ] */ - - duk_push_object(thr); - h = duk_known_hobject(thr, -1); - duk_insert(thr, -3); - - /* [ ... regexp_object escaped_source bytecode ] */ - - DUK_HOBJECT_SET_CLASS_NUMBER(h, DUK_HOBJECT_CLASS_REGEXP); - DUK_HOBJECT_SET_PROTOTYPE_UPDREF(thr, h, thr->builtins[DUK_BIDX_REGEXP_PROTOTYPE]); - - duk_xdef_prop_stridx_short(thr, -3, DUK_STRIDX_INT_BYTECODE, DUK_PROPDESC_FLAGS_NONE); - - /* [ ... regexp_object escaped_source ] */ - - /* In ES2015 .source, and the .global, .multiline, etc flags are - * inherited getters. Store the escaped source as an internal - * property for the getter. - */ - - duk_xdef_prop_stridx_short(thr, -2, DUK_STRIDX_INT_SOURCE, DUK_PROPDESC_FLAGS_NONE); - - /* [ ... regexp_object ] */ - - duk_push_int(thr, 0); - duk_xdef_prop_stridx_short(thr, -2, DUK_STRIDX_LAST_INDEX, DUK_PROPDESC_FLAGS_W); - - /* [ ... regexp_object ] */ -} - -#else /* DUK_USE_REGEXP_SUPPORT */ - -/* regexp support disabled */ - -#endif /* DUK_USE_REGEXP_SUPPORT */ - -/* automatic undefs */ -#undef DUK__RE_BUFLEN -#undef DUK__RE_INITIAL_BUFSIZE -#line 1 "duk_regexp_executor.c" -/* - * Regexp executor. - * - * Safety: the ECMAScript executor should prevent user from reading and - * replacing regexp bytecode. Even so, the executor must validate all - * memory accesses etc. When an invalid access is detected (e.g. a 'save' - * opcode to invalid, unallocated index) it should fail with an internal - * error but not cause a segmentation fault. - * - * Notes: - * - * - Backtrack counts are limited to unsigned 32 bits but should - * technically be duk_size_t for strings longer than 4G chars. - * This also requires a regexp bytecode change. - */ - -/* #include duk_internal.h -> already included */ - -#if defined(DUK_USE_REGEXP_SUPPORT) - -/* - * Helpers for UTF-8 handling - * - * For bytecode readers the duk_uint32_t and duk_int32_t types are correct - * because they're used for more than just codepoints. - */ - -DUK_LOCAL duk_uint32_t duk__bc_get_u32(duk_re_matcher_ctx *re_ctx, const duk_uint8_t **pc) { - return (duk_uint32_t) duk_unicode_decode_xutf8_checked(re_ctx->thr, pc, re_ctx->bytecode, re_ctx->bytecode_end); -} - -DUK_LOCAL duk_int32_t duk__bc_get_i32(duk_re_matcher_ctx *re_ctx, const duk_uint8_t **pc) { - duk_uint32_t t; - - /* signed integer encoding needed to work with UTF-8 */ - t = (duk_uint32_t) duk_unicode_decode_xutf8_checked(re_ctx->thr, pc, re_ctx->bytecode, re_ctx->bytecode_end); - if (t & 1) { - return -((duk_int32_t) (t >> 1)); - } else { - return (duk_int32_t) (t >> 1); - } -} - -DUK_LOCAL const duk_uint8_t *duk__utf8_backtrack(duk_hthread *thr, - const duk_uint8_t **ptr, - const duk_uint8_t *ptr_start, - const duk_uint8_t *ptr_end, - duk_uint_fast32_t count) { - const duk_uint8_t *p; - - /* Note: allow backtracking from p == ptr_end */ - p = *ptr; - if (p < ptr_start || p > ptr_end) { - goto fail; - } - - while (count > 0) { - for (;;) { - p--; - if (p < ptr_start) { - goto fail; - } - if ((*p & 0xc0) != 0x80) { - /* utf-8 continuation bytes have the form 10xx xxxx */ - break; - } - } - count--; - } - *ptr = p; - return p; - -fail: - DUK_ERROR_INTERNAL(thr); - DUK_WO_NORETURN(return NULL;); -} - -DUK_LOCAL const duk_uint8_t *duk__utf8_advance(duk_hthread *thr, - const duk_uint8_t **ptr, - const duk_uint8_t *ptr_start, - const duk_uint8_t *ptr_end, - duk_uint_fast32_t count) { - const duk_uint8_t *p; - - p = *ptr; - if (p < ptr_start || p >= ptr_end) { - goto fail; - } - - while (count > 0) { - for (;;) { - p++; - - /* Note: if encoding ends by hitting end of input, we don't check that - * the encoding is valid, we just assume it is. - */ - if (p >= ptr_end || ((*p & 0xc0) != 0x80)) { - /* utf-8 continuation bytes have the form 10xx xxxx */ - break; - } - } - count--; - } - - *ptr = p; - return p; - -fail: - DUK_ERROR_INTERNAL(thr); - DUK_WO_NORETURN(return NULL;); -} - -/* - * Helpers for dealing with the input string - */ - -/* Get a (possibly canonicalized) input character from current sp. The input - * itself is never modified, and captures always record non-canonicalized - * characters even in case-insensitive matching. Return <0 if out of input. - */ -DUK_LOCAL duk_codepoint_t duk__inp_get_cp(duk_re_matcher_ctx *re_ctx, const duk_uint8_t **sp) { - duk_codepoint_t res; - - if (*sp >= re_ctx->input_end) { - return -1; - } - res = (duk_codepoint_t) duk_unicode_decode_xutf8_checked(re_ctx->thr, sp, re_ctx->input, re_ctx->input_end); - if (re_ctx->re_flags & DUK_RE_FLAG_IGNORE_CASE) { - res = duk_unicode_re_canonicalize_char(re_ctx->thr, res); - } - return res; -} - -DUK_LOCAL const duk_uint8_t *duk__inp_backtrack(duk_re_matcher_ctx *re_ctx, const duk_uint8_t **sp, duk_uint_fast32_t count) { - return duk__utf8_backtrack(re_ctx->thr, sp, re_ctx->input, re_ctx->input_end, count); -} - -/* Backtrack utf-8 input and return a (possibly canonicalized) input character. */ -DUK_LOCAL duk_codepoint_t duk__inp_get_prev_cp(duk_re_matcher_ctx *re_ctx, const duk_uint8_t *sp) { - /* note: caller 'sp' is intentionally not updated here */ - (void) duk__inp_backtrack(re_ctx, &sp, (duk_uint_fast32_t) 1); - return duk__inp_get_cp(re_ctx, &sp); -} - -/* - * Regexp recursive matching function. - * - * Returns 'sp' on successful match (points to character after last matched one), - * NULL otherwise. - * - * The C recursion depth limit check is only performed in this function, this - * suffices because the function is present in all true recursion required by - * regexp execution. - */ - -DUK_LOCAL const duk_uint8_t *duk__match_regexp(duk_re_matcher_ctx *re_ctx, const duk_uint8_t *pc, const duk_uint8_t *sp) { - duk_native_stack_check(re_ctx->thr); - if (re_ctx->recursion_depth >= re_ctx->recursion_limit) { - DUK_ERROR_RANGE(re_ctx->thr, DUK_STR_REGEXP_EXECUTOR_RECURSION_LIMIT); - DUK_WO_NORETURN(return NULL;); - } - re_ctx->recursion_depth++; - - for (;;) { - duk_small_int_t op; - - if (re_ctx->steps_count >= re_ctx->steps_limit) { - DUK_ERROR_RANGE(re_ctx->thr, DUK_STR_REGEXP_EXECUTOR_STEP_LIMIT); - DUK_WO_NORETURN(return NULL;); - } - re_ctx->steps_count++; - - /* Opcodes are at most 7 bits now so they encode to one byte. If this - * were not the case or 'pc' is invalid here (due to a bug etc) we'll - * still fail safely through the switch default case. - */ - DUK_ASSERT(pc[0] <= 0x7fU); -#if 0 - op = (duk_small_int_t) duk__bc_get_u32(re_ctx, &pc); -#endif - op = *pc++; - - DUK_DDD(DUK_DDDPRINT("match: rec=%ld, steps=%ld, pc (after op)=%ld, sp=%ld, op=%ld", - (long) re_ctx->recursion_depth, - (long) re_ctx->steps_count, - (long) (pc - re_ctx->bytecode), - (long) (sp - re_ctx->input), - (long) op)); - - switch (op) { - case DUK_REOP_MATCH: { - goto match; - } - case DUK_REOP_CHAR: { - /* - * Byte-based matching would be possible for case-sensitive - * matching but not for case-insensitive matching. So, we - * match by decoding the input and bytecode character normally. - * - * Bytecode characters are assumed to be already canonicalized. - * Input characters are canonicalized automatically by - * duk__inp_get_cp() if necessary. - * - * There is no opcode for matching multiple characters. The - * regexp compiler has trouble joining strings efficiently - * during compilation. See doc/regexp.rst for more discussion. - */ - duk_codepoint_t c1, c2; - - c1 = (duk_codepoint_t) duk__bc_get_u32(re_ctx, &pc); - DUK_ASSERT(!(re_ctx->re_flags & DUK_RE_FLAG_IGNORE_CASE) || - c1 == duk_unicode_re_canonicalize_char(re_ctx->thr, c1)); /* canonicalized by compiler */ - c2 = duk__inp_get_cp(re_ctx, &sp); - /* No need to check for c2 < 0 (end of input): because c1 >= 0, it - * will fail the match below automatically and cause goto fail. - */ -#if 0 - if (c2 < 0) { - goto fail; - } -#endif - DUK_ASSERT(c1 >= 0); - - DUK_DDD(DUK_DDDPRINT("char match, c1=%ld, c2=%ld", (long) c1, (long) c2)); - if (c1 != c2) { - goto fail; - } - break; - } - case DUK_REOP_PERIOD: { - duk_codepoint_t c; - - c = duk__inp_get_cp(re_ctx, &sp); - if (c < 0 || duk_unicode_is_line_terminator(c)) { - /* E5 Sections 15.10.2.8, 7.3 */ - goto fail; - } - break; - } - case DUK_REOP_RANGES: - case DUK_REOP_INVRANGES: { - duk_uint32_t n; - duk_codepoint_t c; - duk_small_int_t match; - - n = duk__bc_get_u32(re_ctx, &pc); - c = duk__inp_get_cp(re_ctx, &sp); - if (c < 0) { - goto fail; - } - - match = 0; - while (n) { - duk_codepoint_t r1, r2; - r1 = (duk_codepoint_t) duk__bc_get_u32(re_ctx, &pc); - r2 = (duk_codepoint_t) duk__bc_get_u32(re_ctx, &pc); - DUK_DDD(DUK_DDDPRINT("matching ranges/invranges, n=%ld, r1=%ld, r2=%ld, c=%ld", - (long) n, - (long) r1, - (long) r2, - (long) c)); - if (c >= r1 && c <= r2) { - /* Note: don't bail out early, we must read all the ranges from - * bytecode. Another option is to skip them efficiently after - * breaking out of here. Prefer smallest code. - */ - match = 1; - } - n--; - } - - if (op == DUK_REOP_RANGES) { - if (!match) { - goto fail; - } - } else { - DUK_ASSERT(op == DUK_REOP_INVRANGES); - if (match) { - goto fail; - } - } - break; - } - case DUK_REOP_ASSERT_START: { - duk_codepoint_t c; - - if (sp <= re_ctx->input) { - break; - } - if (!(re_ctx->re_flags & DUK_RE_FLAG_MULTILINE)) { - goto fail; - } - c = duk__inp_get_prev_cp(re_ctx, sp); - if (duk_unicode_is_line_terminator(c)) { - /* E5 Sections 15.10.2.8, 7.3 */ - break; - } - goto fail; - } - case DUK_REOP_ASSERT_END: { - duk_codepoint_t c; - const duk_uint8_t *tmp_sp; - - tmp_sp = sp; - c = duk__inp_get_cp(re_ctx, &tmp_sp); - if (c < 0) { - break; - } - if (!(re_ctx->re_flags & DUK_RE_FLAG_MULTILINE)) { - goto fail; - } - if (duk_unicode_is_line_terminator(c)) { - /* E5 Sections 15.10.2.8, 7.3 */ - break; - } - goto fail; - } - case DUK_REOP_ASSERT_WORD_BOUNDARY: - case DUK_REOP_ASSERT_NOT_WORD_BOUNDARY: { - /* - * E5 Section 15.10.2.6. The previous and current character - * should -not- be canonicalized as they are now. However, - * canonicalization does not affect the result of IsWordChar() - * (which depends on Unicode characters never canonicalizing - * into ASCII characters) so this does not matter. - */ - duk_small_int_t w1, w2; - - if (sp <= re_ctx->input) { - w1 = 0; /* not a wordchar */ - } else { - duk_codepoint_t c; - c = duk__inp_get_prev_cp(re_ctx, sp); - w1 = duk_unicode_re_is_wordchar(c); - } - if (sp >= re_ctx->input_end) { - w2 = 0; /* not a wordchar */ - } else { - const duk_uint8_t *tmp_sp = sp; /* dummy so sp won't get updated */ - duk_codepoint_t c; - c = duk__inp_get_cp(re_ctx, &tmp_sp); - w2 = duk_unicode_re_is_wordchar(c); - } - - if (op == DUK_REOP_ASSERT_WORD_BOUNDARY) { - if (w1 == w2) { - goto fail; - } - } else { - DUK_ASSERT(op == DUK_REOP_ASSERT_NOT_WORD_BOUNDARY); - if (w1 != w2) { - goto fail; - } - } - break; - } - case DUK_REOP_JUMP: { - duk_int32_t skip; - - skip = duk__bc_get_i32(re_ctx, &pc); - pc += skip; - break; - } - case DUK_REOP_SPLIT1: { - /* split1: prefer direct execution (no jump) */ - const duk_uint8_t *sub_sp; - duk_int32_t skip; - - skip = duk__bc_get_i32(re_ctx, &pc); - sub_sp = duk__match_regexp(re_ctx, pc, sp); - if (sub_sp) { - sp = sub_sp; - goto match; - } - pc += skip; - break; - } - case DUK_REOP_SPLIT2: { - /* split2: prefer jump execution (not direct) */ - const duk_uint8_t *sub_sp; - duk_int32_t skip; - - skip = duk__bc_get_i32(re_ctx, &pc); - sub_sp = duk__match_regexp(re_ctx, pc + skip, sp); - if (sub_sp) { - sp = sub_sp; - goto match; - } - break; - } - case DUK_REOP_SQMINIMAL: { - duk_uint32_t q, qmin, qmax; - duk_int32_t skip; - const duk_uint8_t *sub_sp; - - qmin = duk__bc_get_u32(re_ctx, &pc); - qmax = duk__bc_get_u32(re_ctx, &pc); - skip = duk__bc_get_i32(re_ctx, &pc); - DUK_DDD(DUK_DDDPRINT("minimal quantifier, qmin=%lu, qmax=%lu, skip=%ld", - (unsigned long) qmin, - (unsigned long) qmax, - (long) skip)); - - q = 0; - while (q <= qmax) { - if (q >= qmin) { - sub_sp = duk__match_regexp(re_ctx, pc + skip, sp); - if (sub_sp) { - sp = sub_sp; - goto match; - } - } - sub_sp = duk__match_regexp(re_ctx, pc, sp); - if (!sub_sp) { - break; - } - sp = sub_sp; - q++; - } - goto fail; - } - case DUK_REOP_SQGREEDY: { - duk_uint32_t q, qmin, qmax, atomlen; - duk_int32_t skip; - const duk_uint8_t *sub_sp; - - qmin = duk__bc_get_u32(re_ctx, &pc); - qmax = duk__bc_get_u32(re_ctx, &pc); - atomlen = duk__bc_get_u32(re_ctx, &pc); - skip = duk__bc_get_i32(re_ctx, &pc); - DUK_DDD(DUK_DDDPRINT("greedy quantifier, qmin=%lu, qmax=%lu, atomlen=%lu, skip=%ld", - (unsigned long) qmin, - (unsigned long) qmax, - (unsigned long) atomlen, - (long) skip)); - - q = 0; - while (q < qmax) { - sub_sp = duk__match_regexp(re_ctx, pc, sp); - if (!sub_sp) { - break; - } - sp = sub_sp; - q++; - } - while (q >= qmin) { - sub_sp = duk__match_regexp(re_ctx, pc + skip, sp); - if (sub_sp) { - sp = sub_sp; - goto match; - } - if (q == qmin) { - break; - } - - /* Note: if atom were to contain e.g. captures, we would need to - * re-match the atom to get correct captures. Simply quantifiers - * do not allow captures in their atom now, so this is not an issue. - */ - - DUK_DDD(DUK_DDDPRINT("greedy quantifier, backtrack %ld characters (atomlen)", (long) atomlen)); - sp = duk__inp_backtrack(re_ctx, &sp, (duk_uint_fast32_t) atomlen); - q--; - } - goto fail; - } - case DUK_REOP_SAVE: { - duk_uint32_t idx; - const duk_uint8_t *old; - const duk_uint8_t *sub_sp; - - idx = duk__bc_get_u32(re_ctx, &pc); - if (idx >= re_ctx->nsaved) { - /* idx is unsigned, < 0 check is not necessary */ - DUK_D(DUK_DPRINT("internal error, regexp save index insane: idx=%ld", (long) idx)); - goto internal_error; - } - old = re_ctx->saved[idx]; - re_ctx->saved[idx] = sp; - sub_sp = duk__match_regexp(re_ctx, pc, sp); - if (sub_sp) { - sp = sub_sp; - goto match; - } - re_ctx->saved[idx] = old; - goto fail; - } - case DUK_REOP_WIPERANGE: { - /* Wipe capture range and save old values for backtracking. - * - * XXX: this typically happens with a relatively small idx_count. - * It might be useful to handle cases where the count is small - * (say <= 8) by saving the values in stack instead. This would - * reduce memory churn and improve performance, at the cost of a - * slightly higher code footprint. - */ - duk_uint32_t idx_start, idx_count; -#if defined(DUK_USE_EXPLICIT_NULL_INIT) - duk_uint32_t idx_end, idx; -#endif - duk_uint8_t **range_save; - const duk_uint8_t *sub_sp; - - idx_start = duk__bc_get_u32(re_ctx, &pc); - idx_count = duk__bc_get_u32(re_ctx, &pc); - DUK_DDD(DUK_DDDPRINT("wipe saved range: start=%ld, count=%ld -> [%ld,%ld] (captures [%ld,%ld])", - (long) idx_start, - (long) idx_count, - (long) idx_start, - (long) (idx_start + idx_count - 1), - (long) (idx_start / 2), - (long) ((idx_start + idx_count - 1) / 2))); - if (idx_start + idx_count > re_ctx->nsaved || idx_count == 0) { - /* idx is unsigned, < 0 check is not necessary */ - DUK_D(DUK_DPRINT("internal error, regexp wipe indices insane: idx_start=%ld, idx_count=%ld", - (long) idx_start, - (long) idx_count)); - goto internal_error; - } - DUK_ASSERT(idx_count > 0); - - duk_require_stack(re_ctx->thr, 1); - range_save = (duk_uint8_t **) duk_push_fixed_buffer_nozero(re_ctx->thr, sizeof(duk_uint8_t *) * idx_count); - DUK_ASSERT(range_save != NULL); - duk_memcpy(range_save, re_ctx->saved + idx_start, sizeof(duk_uint8_t *) * idx_count); -#if defined(DUK_USE_EXPLICIT_NULL_INIT) - idx_end = idx_start + idx_count; - for (idx = idx_start; idx < idx_end; idx++) { - re_ctx->saved[idx] = NULL; - } -#else - duk_memzero((void *) (re_ctx->saved + idx_start), sizeof(duk_uint8_t *) * idx_count); -#endif - - sub_sp = duk__match_regexp(re_ctx, pc, sp); - if (sub_sp) { - /* match: keep wiped/resaved values */ - DUK_DDD(DUK_DDDPRINT("match: keep wiped/resaved values [%ld,%ld] (captures [%ld,%ld])", - (long) idx_start, - (long) (idx_start + idx_count - 1), - (long) (idx_start / 2), - (long) ((idx_start + idx_count - 1) / 2))); - duk_pop_unsafe(re_ctx->thr); - sp = sub_sp; - goto match; - } - - /* fail: restore saves */ - DUK_DDD(DUK_DDDPRINT("fail: restore wiped/resaved values [%ld,%ld] (captures [%ld,%ld])", - (long) idx_start, - (long) (idx_start + idx_count - 1), - (long) (idx_start / 2), - (long) ((idx_start + idx_count - 1) / 2))); - duk_memcpy((void *) (re_ctx->saved + idx_start), - (const void *) range_save, - sizeof(duk_uint8_t *) * idx_count); - duk_pop_unsafe(re_ctx->thr); - goto fail; - } - case DUK_REOP_LOOKPOS: - case DUK_REOP_LOOKNEG: { - /* - * Needs a save of multiple saved[] entries depending on what range - * may be overwritten. Because the regexp parser does no such analysis, - * we currently save the entire saved array here. Lookaheads are thus - * a bit expensive. Note that the saved array is not needed for just - * the lookahead sub-match, but for the matching of the entire sequel. - * - * The temporary save buffer is pushed on to the valstack to handle - * errors correctly. Each lookahead causes a C recursion and pushes - * more stuff on the value stack. If the C recursion limit is less - * than the value stack slack, there is no need to check the stack. - * We do so regardless, just in case. - */ - - duk_int32_t skip; - duk_uint8_t **full_save; - const duk_uint8_t *sub_sp; - - DUK_ASSERT(re_ctx->nsaved > 0); - - duk_require_stack(re_ctx->thr, 1); - full_save = - (duk_uint8_t **) duk_push_fixed_buffer_nozero(re_ctx->thr, sizeof(duk_uint8_t *) * re_ctx->nsaved); - DUK_ASSERT(full_save != NULL); - duk_memcpy(full_save, re_ctx->saved, sizeof(duk_uint8_t *) * re_ctx->nsaved); - - skip = duk__bc_get_i32(re_ctx, &pc); - sub_sp = duk__match_regexp(re_ctx, pc, sp); - if (op == DUK_REOP_LOOKPOS) { - if (!sub_sp) { - goto lookahead_fail; - } - } else { - if (sub_sp) { - goto lookahead_fail; - } - } - sub_sp = duk__match_regexp(re_ctx, pc + skip, sp); - if (sub_sp) { - /* match: keep saves */ - duk_pop_unsafe(re_ctx->thr); - sp = sub_sp; - goto match; - } - - /* fall through */ - - lookahead_fail: - /* fail: restore saves */ - duk_memcpy((void *) re_ctx->saved, (const void *) full_save, sizeof(duk_uint8_t *) * re_ctx->nsaved); - duk_pop_unsafe(re_ctx->thr); - goto fail; - } - case DUK_REOP_BACKREFERENCE: { - /* - * Byte matching for back-references would be OK in case- - * sensitive matching. In case-insensitive matching we need - * to canonicalize characters, so back-reference matching needs - * to be done with codepoints instead. So, we just decode - * everything normally here, too. - * - * Note: back-reference index which is 0 or higher than - * NCapturingParens (= number of capturing parens in the - * -entire- regexp) is a compile time error. However, a - * backreference referring to a valid capture which has - * not matched anything always succeeds! See E5 Section - * 15.10.2.9, step 5, sub-step 3. - */ - duk_uint32_t idx; - const duk_uint8_t *p; - - idx = duk__bc_get_u32(re_ctx, &pc); - idx = idx << 1; /* backref n -> saved indices [n*2, n*2+1] */ - if (idx < 2 || idx + 1 >= re_ctx->nsaved) { - /* regexp compiler should catch these */ - DUK_D(DUK_DPRINT("internal error, backreference index insane")); - goto internal_error; - } - if (!re_ctx->saved[idx] || !re_ctx->saved[idx + 1]) { - /* capture is 'undefined', always matches! */ - DUK_DDD(DUK_DDDPRINT("backreference: saved[%ld,%ld] not complete, always match", - (long) idx, - (long) (idx + 1))); - break; - } - DUK_DDD(DUK_DDDPRINT("backreference: match saved[%ld,%ld]", (long) idx, (long) (idx + 1))); - - p = re_ctx->saved[idx]; - while (p < re_ctx->saved[idx + 1]) { - duk_codepoint_t c1, c2; - - /* Note: not necessary to check p against re_ctx->input_end: - * the memory access is checked by duk__inp_get_cp(), while - * valid compiled regexps cannot write a saved[] entry - * which points to outside the string. - */ - c1 = duk__inp_get_cp(re_ctx, &p); - DUK_ASSERT(c1 >= 0); - c2 = duk__inp_get_cp(re_ctx, &sp); - /* No need for an explicit c2 < 0 check: because c1 >= 0, - * the comparison will always fail if c2 < 0. - */ -#if 0 - if (c2 < 0) { - goto fail; - } -#endif - if (c1 != c2) { - goto fail; - } - } - break; - } - default: { - DUK_D(DUK_DPRINT("internal error, regexp opcode error: %ld", (long) op)); - goto internal_error; - } - } - } - -match: - re_ctx->recursion_depth--; - return sp; - -fail: - re_ctx->recursion_depth--; - return NULL; - -internal_error: - DUK_ERROR_INTERNAL(re_ctx->thr); - DUK_WO_NORETURN(return NULL;); -} - -/* - * Exposed matcher function which provides the semantics of RegExp.prototype.exec(). - * - * RegExp.prototype.test() has the same semantics as exec() but does not return the - * result object (which contains the matching string and capture groups). Currently - * there is no separate test() helper, so a temporary result object is created and - * discarded if test() is needed. This is intentional, to save code space. - * - * Input stack: [ ... re_obj input ] - * Output stack: [ ... result ] - */ - -DUK_LOCAL void duk__regexp_match_helper(duk_hthread *thr, duk_small_int_t force_global) { - duk_re_matcher_ctx re_ctx; - duk_hobject *h_regexp; - duk_hstring *h_bytecode; - duk_hstring *h_input; - duk_uint8_t *p_buf; - const duk_uint8_t *pc; - const duk_uint8_t *sp; - duk_small_int_t match = 0; - duk_small_int_t global; - duk_uint_fast32_t i; - double d; - duk_uint32_t char_offset; - - DUK_ASSERT(thr != NULL); - - DUK_DD(DUK_DDPRINT("regexp match: regexp=%!T, input=%!T", - (duk_tval *) duk_get_tval(thr, -2), - (duk_tval *) duk_get_tval(thr, -1))); - - /* - * Regexp instance check, bytecode check, input coercion. - * - * See E5 Section 15.10.6. - */ - - /* TypeError if wrong; class check, see E5 Section 15.10.6 */ - h_regexp = duk_require_hobject_with_class(thr, -2, DUK_HOBJECT_CLASS_REGEXP); - DUK_ASSERT(h_regexp != NULL); - DUK_ASSERT(DUK_HOBJECT_GET_CLASS_NUMBER(h_regexp) == DUK_HOBJECT_CLASS_REGEXP); - DUK_UNREF(h_regexp); - - h_input = duk_to_hstring(thr, -1); - DUK_ASSERT(h_input != NULL); - - duk_xget_owndataprop_stridx_short(thr, -2, DUK_STRIDX_INT_BYTECODE); /* [ ... re_obj input ] -> [ ... re_obj input bc ] */ - h_bytecode = - duk_require_hstring(thr, -1); /* no regexp instance should exist without a non-configurable bytecode property */ - DUK_ASSERT(h_bytecode != NULL); - - /* - * Basic context initialization. - * - * Some init values are read from the bytecode header - * whose format is (UTF-8 codepoints): - * - * uint flags - * uint nsaved (even, 2n+2 where n = num captures) - */ - - /* [ ... re_obj input bc ] */ - - duk_memzero(&re_ctx, sizeof(re_ctx)); - - re_ctx.thr = thr; - re_ctx.input = (const duk_uint8_t *) DUK_HSTRING_GET_DATA(h_input); - re_ctx.input_end = re_ctx.input + DUK_HSTRING_GET_BYTELEN(h_input); - re_ctx.bytecode = (const duk_uint8_t *) DUK_HSTRING_GET_DATA(h_bytecode); - re_ctx.bytecode_end = re_ctx.bytecode + DUK_HSTRING_GET_BYTELEN(h_bytecode); - re_ctx.saved = NULL; - re_ctx.recursion_limit = DUK_USE_REGEXP_EXECUTOR_RECLIMIT; - re_ctx.steps_limit = DUK_RE_EXECUTE_STEPS_LIMIT; - - /* read header */ - pc = re_ctx.bytecode; - re_ctx.re_flags = duk__bc_get_u32(&re_ctx, &pc); - re_ctx.nsaved = duk__bc_get_u32(&re_ctx, &pc); - re_ctx.bytecode = pc; - - DUK_ASSERT(DUK_RE_FLAG_GLOBAL < 0x10000UL); /* must fit into duk_small_int_t */ - global = (duk_small_int_t) (force_global | (duk_small_int_t) (re_ctx.re_flags & DUK_RE_FLAG_GLOBAL)); - - DUK_ASSERT(re_ctx.nsaved >= 2); - DUK_ASSERT((re_ctx.nsaved % 2) == 0); - - p_buf = (duk_uint8_t *) duk_push_fixed_buffer(thr, sizeof(duk_uint8_t *) * re_ctx.nsaved); /* rely on zeroing */ - DUK_UNREF(p_buf); - re_ctx.saved = (const duk_uint8_t **) duk_get_buffer(thr, -1, NULL); - DUK_ASSERT(re_ctx.saved != NULL); - - /* [ ... re_obj input bc saved_buf ] */ - -#if defined(DUK_USE_EXPLICIT_NULL_INIT) - for (i = 0; i < re_ctx.nsaved; i++) { - re_ctx.saved[i] = (duk_uint8_t *) NULL; - } -#elif defined(DUK_USE_ZERO_BUFFER_DATA) - /* buffer is automatically zeroed */ -#else - duk_memzero((void *) p_buf, sizeof(duk_uint8_t *) * re_ctx.nsaved); -#endif - - DUK_DDD(DUK_DDDPRINT("regexp ctx initialized, flags=0x%08lx, nsaved=%ld, recursion_limit=%ld, steps_limit=%ld", - (unsigned long) re_ctx.re_flags, - (long) re_ctx.nsaved, - (long) re_ctx.recursion_limit, - (long) re_ctx.steps_limit)); - - /* - * Get starting character offset for match, and initialize 'sp' based on it. - * - * Note: lastIndex is non-configurable so it must be present (we check the - * internal class of the object above, so we know it is). User code can set - * its value to an arbitrary (garbage) value though; E5 requires that lastIndex - * be coerced to a number before using. The code below works even if the - * property is missing: the value will then be coerced to zero. - * - * Note: lastIndex may be outside Uint32 range even after ToInteger() coercion. - * For instance, ToInteger(+Infinity) = +Infinity. We track the match offset - * as an integer, but pre-check it to be inside the 32-bit range before the loop. - * If not, the check in E5 Section 15.10.6.2, step 9.a applies. - */ - - /* XXX: lastIndex handling produces a lot of asm */ - - /* [ ... re_obj input bc saved_buf ] */ - - duk_get_prop_stridx_short(thr, -4, DUK_STRIDX_LAST_INDEX); /* -> [ ... re_obj input bc saved_buf lastIndex ] */ - (void) duk_to_int(thr, -1); /* ToInteger(lastIndex) */ - d = duk_get_number(thr, -1); /* integer, but may be +/- Infinite, +/- zero (not NaN, though) */ - duk_pop_nodecref_unsafe(thr); - - if (global) { - if (d < 0.0 || d > (double) DUK_HSTRING_GET_CHARLEN(h_input)) { - /* match fail */ - char_offset = 0; /* not really necessary */ - DUK_ASSERT(match == 0); - goto match_over; - } - char_offset = (duk_uint32_t) d; - } else { - /* lastIndex must be ignored for non-global regexps, but get the - * value for (theoretical) side effects. No side effects can - * really occur, because lastIndex is a normal property and is - * always non-configurable for RegExp instances. - */ - char_offset = (duk_uint32_t) 0; - } - - DUK_ASSERT(char_offset <= DUK_HSTRING_GET_CHARLEN(h_input)); - sp = re_ctx.input + duk_heap_strcache_offset_char2byte(thr, h_input, char_offset); - - /* - * Match loop. - * - * Try matching at different offsets until match found or input exhausted. - */ - - /* [ ... re_obj input bc saved_buf ] */ - - DUK_ASSERT(match == 0); - - for (;;) { - /* char offset in [0, h_input->clen] (both ends inclusive), checked before entry */ - DUK_ASSERT_DISABLE(char_offset >= 0); - DUK_ASSERT(char_offset <= DUK_HSTRING_GET_CHARLEN(h_input)); - - /* Note: re_ctx.steps is intentionally not reset, it applies to the entire unanchored match */ - DUK_ASSERT(re_ctx.recursion_depth == 0); - - DUK_DDD(DUK_DDDPRINT("attempt match at char offset %ld; %p [%p,%p]", - (long) char_offset, - (const void *) sp, - (const void *) re_ctx.input, - (const void *) re_ctx.input_end)); - - /* - * Note: - * - * - duk__match_regexp() is required not to longjmp() in ordinary "non-match" - * conditions; a longjmp() will terminate the entire matching process. - * - * - Clearing saved[] is not necessary because backtracking does it - * - * - Backtracking also rewinds re_ctx.recursion back to zero, unless an - * internal/limit error occurs (which causes a longjmp()) - * - * - If we supported anchored matches, we would break out here - * unconditionally; however, ECMAScript regexps don't have anchored - * matches. It might make sense to implement a fast bail-out if - * the regexp begins with '^' and sp is not 0: currently we'll just - * run through the entire input string, trivially failing the match - * at every non-zero offset. - */ - - if (duk__match_regexp(&re_ctx, re_ctx.bytecode, sp) != NULL) { - DUK_DDD(DUK_DDDPRINT("match at offset %ld", (long) char_offset)); - match = 1; - break; - } - - /* advance by one character (code point) and one char_offset */ - char_offset++; - if (char_offset > DUK_HSTRING_GET_CHARLEN(h_input)) { - /* - * Note: - * - * - Intentionally attempt (empty) match at char_offset == k_input->clen - * - * - Negative char_offsets have been eliminated and char_offset is duk_uint32_t - * -> no need or use for a negative check - */ - - DUK_DDD(DUK_DDDPRINT("no match after trying all sp offsets")); - break; - } - - /* avoid calling at end of input, will DUK_ERROR (above check suffices to avoid this) */ - (void) duk__utf8_advance(thr, &sp, re_ctx.input, re_ctx.input_end, (duk_uint_fast32_t) 1); - } - -match_over: - - /* - * Matching complete, create result array or return a 'null'. Update lastIndex - * if necessary. See E5 Section 15.10.6.2. - * - * Because lastIndex is a character (not byte) offset, we need the character - * length of the match which we conveniently get as a side effect of interning - * the matching substring (0th index of result array). - * - * saved[0] start pointer (~ byte offset) of current match - * saved[1] end pointer (~ byte offset) of current match (exclusive) - * char_offset start character offset of current match (-> .index of result) - * char_end_offset end character offset (computed below) - */ - - /* [ ... re_obj input bc saved_buf ] */ - - if (match) { -#if defined(DUK_USE_ASSERTIONS) - duk_hobject *h_res; -#endif - duk_uint32_t char_end_offset = 0; - - DUK_DDD(DUK_DDDPRINT("regexp matches at char_offset %ld", (long) char_offset)); - - DUK_ASSERT(re_ctx.nsaved >= 2); /* must have start and end */ - DUK_ASSERT((re_ctx.nsaved % 2) == 0); /* and even number */ - - /* XXX: Array size is known before and (2 * re_ctx.nsaved) but not taken - * advantage of now. The array is not compacted either, as regexp match - * objects are usually short lived. - */ - - duk_push_array(thr); - -#if defined(DUK_USE_ASSERTIONS) - h_res = duk_require_hobject(thr, -1); - DUK_ASSERT(DUK_HOBJECT_HAS_EXTENSIBLE(h_res)); - DUK_ASSERT(DUK_HOBJECT_HAS_EXOTIC_ARRAY(h_res)); - DUK_ASSERT(DUK_HOBJECT_GET_CLASS_NUMBER(h_res) == DUK_HOBJECT_CLASS_ARRAY); -#endif - - /* [ ... re_obj input bc saved_buf res_obj ] */ - - duk_push_u32(thr, char_offset); - duk_xdef_prop_stridx_short_wec(thr, -2, DUK_STRIDX_INDEX); - - duk_dup_m4(thr); - duk_xdef_prop_stridx_short_wec(thr, -2, DUK_STRIDX_INPUT); - - for (i = 0; i < re_ctx.nsaved; i += 2) { - /* Captures which are undefined have NULL pointers and are returned - * as 'undefined'. The same is done when saved[] pointers are insane - * (this should, of course, never happen in practice). - */ - duk_push_uarridx(thr, (duk_uarridx_t) (i / 2)); - - if (re_ctx.saved[i] && re_ctx.saved[i + 1] && re_ctx.saved[i + 1] >= re_ctx.saved[i]) { - duk_push_lstring(thr, - (const char *) re_ctx.saved[i], - (duk_size_t) (re_ctx.saved[i + 1] - re_ctx.saved[i])); - if (i == 0) { - /* Assumes that saved[0] and saved[1] are always - * set by regexp bytecode (if not, char_end_offset - * will be zero). Also assumes clen reflects the - * correct char length. - */ - char_end_offset = char_offset + (duk_uint32_t) duk_get_length(thr, -1); /* add charlen */ - } - } else { - duk_push_undefined(thr); - } - - /* [ ... re_obj input bc saved_buf res_obj idx val ] */ - duk_def_prop(thr, -3, DUK_DEFPROP_HAVE_VALUE | DUK_DEFPROP_SET_WEC); - } - - /* [ ... re_obj input bc saved_buf res_obj ] */ - - /* NB: 'length' property is automatically updated by the array setup loop */ - - if (global) { - /* global regexp: lastIndex updated on match */ - duk_push_u32(thr, char_end_offset); - duk_put_prop_stridx_short(thr, -6, DUK_STRIDX_LAST_INDEX); - } else { - /* non-global regexp: lastIndex never updated on match */ - ; - } - } else { - /* - * No match, E5 Section 15.10.6.2, step 9.a.i - 9.a.ii apply, regardless - * of 'global' flag of the RegExp. In particular, if lastIndex is invalid - * initially, it is reset to zero. - */ - - DUK_DDD(DUK_DDDPRINT("regexp does not match")); - - duk_push_null(thr); - - /* [ ... re_obj input bc saved_buf res_obj ] */ - - duk_push_int(thr, 0); - duk_put_prop_stridx_short(thr, -6, DUK_STRIDX_LAST_INDEX); - } - - /* [ ... re_obj input bc saved_buf res_obj ] */ - - duk_insert(thr, -5); - - /* [ ... res_obj re_obj input bc saved_buf ] */ - - duk_pop_n_unsafe(thr, 4); - - /* [ ... res_obj ] */ - - /* XXX: these last tricks are unnecessary if the function is made - * a genuine native function. - */ -} - -DUK_INTERNAL void duk_regexp_match(duk_hthread *thr) { - duk__regexp_match_helper(thr, 0 /*force_global*/); -} - -/* This variant is needed by String.prototype.split(); it needs to perform - * global-style matching on a cloned RegExp which is potentially non-global. - */ -DUK_INTERNAL void duk_regexp_match_force_global(duk_hthread *thr) { - duk__regexp_match_helper(thr, 1 /*force_global*/); -} - -#else /* DUK_USE_REGEXP_SUPPORT */ - -/* regexp support disabled */ - -#endif /* DUK_USE_REGEXP_SUPPORT */ -#line 1 "duk_selftest.c" -/* - * Self tests to ensure execution environment is sane. Intended to catch - * compiler/platform problems which cannot be detected at compile time. - */ - -/* #include duk_internal.h -> already included */ - -#if defined(DUK_USE_SELF_TESTS) - -/* - * Unions and structs for self tests - */ - -typedef union { - double d; - duk_uint8_t x[8]; -} duk__test_double_union; - -/* Self test failed. Expects a local variable 'error_count' to exist. */ -#define DUK__FAILED(msg) \ - do { \ - DUK_D(DUK_DPRINT("self test failed: " #msg " at " DUK_FILE_MACRO ":" DUK_MACRO_STRINGIFY(DUK_LINE_MACRO))); \ - error_count++; \ - } while (0) - -#define DUK__DBLUNION_CMP_TRUE(a, b) \ - do { \ - if (duk_memcmp((const void *) (a), (const void *) (b), sizeof(duk__test_double_union)) != 0) { \ - DUK__FAILED("double union compares false (expected true)"); \ - } \ - } while (0) - -#define DUK__DBLUNION_CMP_FALSE(a, b) \ - do { \ - if (duk_memcmp((const void *) (a), (const void *) (b), sizeof(duk__test_double_union)) == 0) { \ - DUK__FAILED("double union compares true (expected false)"); \ - } \ - } while (0) - -typedef union { - duk_uint32_t i; - duk_uint8_t x[8]; -} duk__test_u32_union; - -#if defined(DUK_USE_INTEGER_LE) -#define DUK__U32_INIT(u, a, b, c, d) \ - do { \ - (u)->x[0] = (d); \ - (u)->x[1] = (c); \ - (u)->x[2] = (b); \ - (u)->x[3] = (a); \ - } while (0) -#elif defined(DUK_USE_INTEGER_ME) -#error integer mixed endian not supported now -#elif defined(DUK_USE_INTEGER_BE) -#define DUK__U32_INIT(u, a, b, c, d) \ - do { \ - (u)->x[0] = (a); \ - (u)->x[1] = (b); \ - (u)->x[2] = (c); \ - (u)->x[3] = (d); \ - } while (0) -#else -#error unknown integer endianness -#endif - -#if defined(DUK_USE_DOUBLE_LE) -#define DUK__DOUBLE_INIT(u, a, b, c, d, e, f, g, h) \ - do { \ - (u)->x[0] = (h); \ - (u)->x[1] = (g); \ - (u)->x[2] = (f); \ - (u)->x[3] = (e); \ - (u)->x[4] = (d); \ - (u)->x[5] = (c); \ - (u)->x[6] = (b); \ - (u)->x[7] = (a); \ - } while (0) -#define DUK__DOUBLE_COMPARE(u, a, b, c, d, e, f, g, h) \ - ((u)->x[0] == (h) && (u)->x[1] == (g) && (u)->x[2] == (f) && (u)->x[3] == (e) && (u)->x[4] == (d) && (u)->x[5] == (c) && \ - (u)->x[6] == (b) && (u)->x[7] == (a)) -#elif defined(DUK_USE_DOUBLE_ME) -#define DUK__DOUBLE_INIT(u, a, b, c, d, e, f, g, h) \ - do { \ - (u)->x[0] = (d); \ - (u)->x[1] = (c); \ - (u)->x[2] = (b); \ - (u)->x[3] = (a); \ - (u)->x[4] = (h); \ - (u)->x[5] = (g); \ - (u)->x[6] = (f); \ - (u)->x[7] = (e); \ - } while (0) -#define DUK__DOUBLE_COMPARE(u, a, b, c, d, e, f, g, h) \ - ((u)->x[0] == (d) && (u)->x[1] == (c) && (u)->x[2] == (b) && (u)->x[3] == (a) && (u)->x[4] == (h) && (u)->x[5] == (g) && \ - (u)->x[6] == (f) && (u)->x[7] == (e)) -#elif defined(DUK_USE_DOUBLE_BE) -#define DUK__DOUBLE_INIT(u, a, b, c, d, e, f, g, h) \ - do { \ - (u)->x[0] = (a); \ - (u)->x[1] = (b); \ - (u)->x[2] = (c); \ - (u)->x[3] = (d); \ - (u)->x[4] = (e); \ - (u)->x[5] = (f); \ - (u)->x[6] = (g); \ - (u)->x[7] = (h); \ - } while (0) -#define DUK__DOUBLE_COMPARE(u, a, b, c, d, e, f, g, h) \ - ((u)->x[0] == (a) && (u)->x[1] == (b) && (u)->x[2] == (c) && (u)->x[3] == (d) && (u)->x[4] == (e) && (u)->x[5] == (f) && \ - (u)->x[6] == (g) && (u)->x[7] == (h)) -#else -#error unknown double endianness -#endif - -/* - * Various sanity checks for typing - */ - -DUK_LOCAL duk_uint_t duk__selftest_types(void) { - duk_uint_t error_count = 0; - - if (!(sizeof(duk_int8_t) == 1 && sizeof(duk_uint8_t) == 1 && sizeof(duk_int16_t) == 2 && sizeof(duk_uint16_t) == 2 && - sizeof(duk_int32_t) == 4 && sizeof(duk_uint32_t) == 4)) { - DUK__FAILED("duk_(u)int{8,16,32}_t size"); - } -#if defined(DUK_USE_64BIT_OPS) - if (!(sizeof(duk_int64_t) == 8 && sizeof(duk_uint64_t) == 8)) { - DUK__FAILED("duk_(u)int64_t size"); - } -#endif - - if (!(sizeof(duk_size_t) >= sizeof(duk_uint_t))) { - /* Some internal code now assumes that all duk_uint_t values - * can be expressed with a duk_size_t. - */ - DUK__FAILED("duk_size_t is smaller than duk_uint_t"); - } - if (!(sizeof(duk_int_t) >= 4)) { - DUK__FAILED("duk_int_t is not 32 bits"); - } - - return error_count; -} - -/* - * Packed tval sanity - */ - -DUK_LOCAL duk_uint_t duk__selftest_packed_tval(void) { - duk_uint_t error_count = 0; - -#if defined(DUK_USE_PACKED_TVAL) - if (sizeof(void *) > 4) { - DUK__FAILED("packed duk_tval in use but sizeof(void *) > 4"); - } -#endif - - return error_count; -} - -/* - * Two's complement arithmetic. - */ - -DUK_LOCAL duk_uint_t duk__selftest_twos_complement(void) { - duk_uint_t error_count = 0; - volatile int test; - test = -1; - - /* Note that byte order doesn't affect this test: all bytes in - * 'test' will be 0xFF for two's complement. - */ - if (((volatile duk_uint8_t *) &test)[0] != (duk_uint8_t) 0xff) { - DUK__FAILED("two's complement arithmetic"); - } - - return error_count; -} - -/* - * Byte order. Important to self check, because on some exotic platforms - * there is no actual detection but rather assumption based on platform - * defines. - */ - -DUK_LOCAL duk_uint_t duk__selftest_byte_order(void) { - duk_uint_t error_count = 0; - duk__test_u32_union u1; - duk__test_double_union u2; - - /* - * >>> struct.pack('>d', 102030405060).encode('hex') - * '4237c17c6dc40000' - */ - - DUK__U32_INIT(&u1, 0xde, 0xad, 0xbe, 0xef); - DUK__DOUBLE_INIT(&u2, 0x42, 0x37, 0xc1, 0x7c, 0x6d, 0xc4, 0x00, 0x00); - - if (u1.i != (duk_uint32_t) 0xdeadbeefUL) { - DUK__FAILED("duk_uint32_t byte order"); - } - - if (!duk_double_equals(u2.d, 102030405060.0)) { - DUK__FAILED("double byte order"); - } - - return error_count; -} - -/* - * DUK_BSWAP macros - */ - -DUK_LOCAL duk_uint_t duk__selftest_bswap_macros(void) { - duk_uint_t error_count = 0; - volatile duk_uint32_t x32_input, x32_output; - duk_uint32_t x32; - volatile duk_uint16_t x16_input, x16_output; - duk_uint16_t x16; - duk_double_union du; - duk_double_t du_diff; -#if defined(DUK_BSWAP64) - volatile duk_uint64_t x64_input, x64_output; - duk_uint64_t x64; -#endif - - /* Cover both compile time and runtime bswap operations, as these - * may have different bugs. - */ - - x16_input = 0xbeefUL; - x16 = x16_input; - x16 = DUK_BSWAP16(x16); - x16_output = x16; - if (x16_output != (duk_uint16_t) 0xefbeUL) { - DUK__FAILED("DUK_BSWAP16"); - } - - x16 = 0xbeefUL; - x16 = DUK_BSWAP16(x16); - if (x16 != (duk_uint16_t) 0xefbeUL) { - DUK__FAILED("DUK_BSWAP16"); - } - - x32_input = 0xdeadbeefUL; - x32 = x32_input; - x32 = DUK_BSWAP32(x32); - x32_output = x32; - if (x32_output != (duk_uint32_t) 0xefbeaddeUL) { - DUK__FAILED("DUK_BSWAP32"); - } - - x32 = 0xdeadbeefUL; - x32 = DUK_BSWAP32(x32); - if (x32 != (duk_uint32_t) 0xefbeaddeUL) { - DUK__FAILED("DUK_BSWAP32"); - } - -#if defined(DUK_BSWAP64) - x64_input = DUK_U64_CONSTANT(0x8899aabbccddeeff); - x64 = x64_input; - x64 = DUK_BSWAP64(x64); - x64_output = x64; - if (x64_output != (duk_uint64_t) DUK_U64_CONSTANT(0xffeeddccbbaa9988)) { - DUK__FAILED("DUK_BSWAP64"); - } - - x64 = DUK_U64_CONSTANT(0x8899aabbccddeeff); - x64 = DUK_BSWAP64(x64); - if (x64 != (duk_uint64_t) DUK_U64_CONSTANT(0xffeeddccbbaa9988)) { - DUK__FAILED("DUK_BSWAP64"); - } -#endif - - /* >>> struct.unpack('>d', '4000112233445566'.decode('hex')) - * (2.008366013071895,) - */ - - du.uc[0] = 0x40; - du.uc[1] = 0x00; - du.uc[2] = 0x11; - du.uc[3] = 0x22; - du.uc[4] = 0x33; - du.uc[5] = 0x44; - du.uc[6] = 0x55; - du.uc[7] = 0x66; - DUK_DBLUNION_DOUBLE_NTOH(&du); - du_diff = du.d - 2.008366013071895; -#if 0 - DUK_D(DUK_DPRINT("du_diff: %lg\n", (double) du_diff)); -#endif - if (du_diff > 1e-15) { - /* Allow very small lenience because some compilers won't parse - * exact IEEE double constants (happened in matrix testing with - * Linux gcc-4.8 -m32 at least). - */ -#if 0 - DUK_D(DUK_DPRINT("Result of DUK_DBLUNION_DOUBLE_NTOH: %02x %02x %02x %02x %02x %02x %02x %02x\n", - (unsigned int) du.uc[0], (unsigned int) du.uc[1], - (unsigned int) du.uc[2], (unsigned int) du.uc[3], - (unsigned int) du.uc[4], (unsigned int) du.uc[5], - (unsigned int) du.uc[6], (unsigned int) du.uc[7])); -#endif - DUK__FAILED("DUK_DBLUNION_DOUBLE_NTOH"); - } - - return error_count; -} - -/* - * Basic double / byte union memory layout. - */ - -DUK_LOCAL duk_uint_t duk__selftest_double_union_size(void) { - duk_uint_t error_count = 0; - - if (sizeof(duk__test_double_union) != 8) { - DUK__FAILED("invalid union size"); - } - - return error_count; -} - -/* - * Union aliasing, see misc/clang_aliasing.c. - */ - -DUK_LOCAL duk_uint_t duk__selftest_double_aliasing(void) { - /* This testcase fails when Emscripten-generated code runs on Firefox. - * It's not an issue because the failure should only affect packed - * duk_tval representation, which is not used with Emscripten. - */ -#if defined(DUK_USE_PACKED_TVAL) - duk_uint_t error_count = 0; - duk__test_double_union a, b; - - /* Test signaling NaN and alias assignment in all endianness combinations. - */ - - /* little endian */ - a.x[0] = 0x11; - a.x[1] = 0x22; - a.x[2] = 0x33; - a.x[3] = 0x44; - a.x[4] = 0x00; - a.x[5] = 0x00; - a.x[6] = 0xf1; - a.x[7] = 0xff; - b = a; - DUK__DBLUNION_CMP_TRUE(&a, &b); - - /* big endian */ - a.x[0] = 0xff; - a.x[1] = 0xf1; - a.x[2] = 0x00; - a.x[3] = 0x00; - a.x[4] = 0x44; - a.x[5] = 0x33; - a.x[6] = 0x22; - a.x[7] = 0x11; - b = a; - DUK__DBLUNION_CMP_TRUE(&a, &b); - - /* mixed endian */ - a.x[0] = 0x00; - a.x[1] = 0x00; - a.x[2] = 0xf1; - a.x[3] = 0xff; - a.x[4] = 0x11; - a.x[5] = 0x22; - a.x[6] = 0x33; - a.x[7] = 0x44; - b = a; - DUK__DBLUNION_CMP_TRUE(&a, &b); - - return error_count; -#else - DUK_D(DUK_DPRINT("skip double aliasing self test when duk_tval is not packed")); - return 0; -#endif -} - -/* - * Zero sign, see misc/tcc_zerosign2.c. - */ - -DUK_LOCAL duk_uint_t duk__selftest_double_zero_sign(void) { - duk_uint_t error_count = 0; - duk__test_double_union a, b; - - a.d = 0.0; - b.d = -a.d; - DUK__DBLUNION_CMP_FALSE(&a, &b); - - return error_count; -} - -/* - * Rounding mode: Duktape assumes round-to-nearest, check that this is true. - * If we had C99 fenv.h we could check that fegetround() == FE_TONEAREST, - * but we don't want to rely on that header; and even if we did, it's good - * to ensure the rounding actually works. - */ - -DUK_LOCAL duk_uint_t duk__selftest_double_rounding(void) { - duk_uint_t error_count = 0; - duk__test_double_union a, b, c; - -#if 0 - /* Include and test manually; these trigger failures: */ - fesetround(FE_UPWARD); - fesetround(FE_DOWNWARD); - fesetround(FE_TOWARDZERO); - - /* This is the default and passes. */ - fesetround(FE_TONEAREST); -#endif - - /* Rounding tests check that none of the other modes (round to - * +Inf, round to -Inf, round to zero) can be active: - * http://www.gnu.org/software/libc/manual/html_node/Rounding.html - */ - - /* 1.0 + 2^(-53): result is midway between 1.0 and 1.0 + ulp. - * Round to nearest: 1.0 - * Round to +Inf: 1.0 + ulp - * Round to -Inf: 1.0 - * Round to zero: 1.0 - * => Correct result eliminates round to +Inf. - */ - DUK__DOUBLE_INIT(&a, 0xf0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00); - DUK__DOUBLE_INIT(&b, 0x3c, 0xa0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00); - duk_memset((void *) &c, 0, sizeof(c)); - c.d = a.d + b.d; - if (!DUK__DOUBLE_COMPARE(&c, 0xf0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00)) { - DUK_D(DUK_DPRINT("broken result (native endiannesss): %02x %02x %02x %02x %02x %02x %02x %02x", - (unsigned int) c.x[0], - (unsigned int) c.x[1], - (unsigned int) c.x[2], - (unsigned int) c.x[3], - (unsigned int) c.x[4], - (unsigned int) c.x[5], - (unsigned int) c.x[6], - (unsigned int) c.x[7])); - DUK__FAILED("invalid result from 1.0 + 0.5ulp"); - } - - /* (1.0 + ulp) + 2^(-53): result is midway between 1.0 + ulp and 1.0 + 2*ulp. - * Round to nearest: 1.0 + 2*ulp (round to even mantissa) - * Round to +Inf: 1.0 + 2*ulp - * Round to -Inf: 1.0 + ulp - * Round to zero: 1.0 + ulp - * => Correct result eliminates round to -Inf and round to zero. - */ - DUK__DOUBLE_INIT(&a, 0x3f, 0xf0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01); - DUK__DOUBLE_INIT(&b, 0x3c, 0xa0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00); - duk_memset((void *) &c, 0, sizeof(c)); - c.d = a.d + b.d; - if (!DUK__DOUBLE_COMPARE(&c, 0x3f, 0xf0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02)) { - DUK_D(DUK_DPRINT("broken result (native endiannesss): %02x %02x %02x %02x %02x %02x %02x %02x", - (unsigned int) c.x[0], - (unsigned int) c.x[1], - (unsigned int) c.x[2], - (unsigned int) c.x[3], - (unsigned int) c.x[4], - (unsigned int) c.x[5], - (unsigned int) c.x[6], - (unsigned int) c.x[7])); - DUK__FAILED("invalid result from (1.0 + ulp) + 0.5ulp"); - } - - /* Could do negative number testing too, but the tests above should - * differentiate between IEEE 754 rounding modes. - */ - return error_count; -} - -/* - * fmod(): often a portability issue in embedded or bare platform targets. - * Check for at least minimally correct behavior. Unlike some other math - * functions (like cos()) Duktape relies on fmod() internally too. - */ - -DUK_LOCAL duk_uint_t duk__selftest_fmod(void) { - duk_uint_t error_count = 0; - duk__test_double_union u1, u2; - volatile duk_double_t t1, t2, t3; - - /* fmod() with integer argument and exponent 2^32 is used by e.g. - * ToUint32() and some Duktape internals. - */ - u1.d = DUK_FMOD(10.0, 4294967296.0); - u2.d = 10.0; - DUK__DBLUNION_CMP_TRUE(&u1, &u2); - - u1.d = DUK_FMOD(4294967306.0, 4294967296.0); - u2.d = 10.0; - DUK__DBLUNION_CMP_TRUE(&u1, &u2); - - u1.d = DUK_FMOD(73014444042.0, 4294967296.0); - u2.d = 10.0; - DUK__DBLUNION_CMP_TRUE(&u1, &u2); - - /* 52-bit integer split into two parts: - * >>> 0x1fedcba9876543 - * 8987183256397123 - * >>> float(0x1fedcba9876543) / float(2**53) - * 0.9977777777777778 - */ - u1.d = DUK_FMOD(8987183256397123.0, 4294967296.0); - u2.d = (duk_double_t) 0xa9876543UL; - DUK__DBLUNION_CMP_TRUE(&u1, &u2); - t1 = 8987183256397123.0; - t2 = 4294967296.0; - t3 = t1 / t2; - u1.d = DUK_FLOOR(t3); - u2.d = (duk_double_t) 0x1fedcbUL; - DUK__DBLUNION_CMP_TRUE(&u1, &u2); - - /* C99 behavior is for fmod() result sign to mathc argument sign. */ - u1.d = DUK_FMOD(-10.0, 4294967296.0); - u2.d = -10.0; - DUK__DBLUNION_CMP_TRUE(&u1, &u2); - - u1.d = DUK_FMOD(-4294967306.0, 4294967296.0); - u2.d = -10.0; - DUK__DBLUNION_CMP_TRUE(&u1, &u2); - - u1.d = DUK_FMOD(-73014444042.0, 4294967296.0); - u2.d = -10.0; - DUK__DBLUNION_CMP_TRUE(&u1, &u2); - - return error_count; -} - -/* - * Struct size/alignment if platform requires it - * - * There are some compiler specific struct padding pragmas etc in use, this - * selftest ensures they're correctly detected and used. - */ - -DUK_LOCAL duk_uint_t duk__selftest_struct_align(void) { - duk_uint_t error_count = 0; - -#if (DUK_USE_ALIGN_BY == 4) - if ((sizeof(duk_hbuffer_fixed) % 4) != 0) { - DUK__FAILED("sizeof(duk_hbuffer_fixed) not aligned to 4"); - } -#elif (DUK_USE_ALIGN_BY == 8) - if ((sizeof(duk_hbuffer_fixed) % 8) != 0) { - DUK__FAILED("sizeof(duk_hbuffer_fixed) not aligned to 8"); - } -#elif (DUK_USE_ALIGN_BY == 1) - /* no check */ -#else -#error invalid DUK_USE_ALIGN_BY -#endif - return error_count; -} - -/* - * 64-bit arithmetic - * - * There are some platforms/compilers where 64-bit types are available - * but don't work correctly. Test for known cases. - */ - -DUK_LOCAL duk_uint_t duk__selftest_64bit_arithmetic(void) { - duk_uint_t error_count = 0; -#if defined(DUK_USE_64BIT_OPS) - volatile duk_int64_t i; - volatile duk_double_t d; - - /* Catch a double-to-int64 cast issue encountered in practice. */ - d = 2147483648.0; - i = (duk_int64_t) d; - if (i != DUK_I64_CONSTANT(0x80000000)) { - DUK__FAILED("casting 2147483648.0 to duk_int64_t failed"); - } -#else - /* nop */ -#endif - return error_count; -} - -/* - * Casting - */ - -DUK_LOCAL duk_uint_t duk__selftest_cast_double_to_small_uint(void) { - /* - * https://github.com/svaarala/duktape/issues/127#issuecomment-77863473 - */ - - duk_uint_t error_count = 0; - - duk_double_t d1, d2; - duk_small_uint_t u; - - duk_double_t d1v, d2v; - duk_small_uint_t uv; - - /* Test without volatiles */ - - d1 = 1.0; - u = (duk_small_uint_t) d1; - d2 = (duk_double_t) u; - - if (!(duk_double_equals(d1, 1.0) && u == 1 && duk_double_equals(d2, 1.0) && duk_double_equals(d1, d2))) { - DUK__FAILED("double to duk_small_uint_t cast failed"); - } - - /* Same test with volatiles */ - - d1v = 1.0; - uv = (duk_small_uint_t) d1v; - d2v = (duk_double_t) uv; - - if (!(duk_double_equals(d1v, 1.0) && uv == 1 && duk_double_equals(d2v, 1.0) && duk_double_equals(d1v, d2v))) { - DUK__FAILED("double to duk_small_uint_t cast failed"); - } - - return error_count; -} - -DUK_LOCAL duk_uint_t duk__selftest_cast_double_to_uint32(void) { - /* - * This test fails on an exotic ARM target; double-to-uint - * cast is incorrectly clamped to -signed- int highest value. - * - * https://github.com/svaarala/duktape/issues/336 - */ - - duk_uint_t error_count = 0; - duk_double_t dv; - duk_uint32_t uv; - - dv = 3735928559.0; /* 0xdeadbeef in decimal */ - uv = (duk_uint32_t) dv; - - if (uv != 0xdeadbeefUL) { - DUK__FAILED("double to duk_uint32_t cast failed"); - } - - return error_count; -} - -/* - * Minimal test of user supplied allocation functions - * - * - Basic alloc + realloc + free cycle - * - * - Realloc to significantly larger size to (hopefully) trigger a - * relocation and check that relocation copying works - */ - -DUK_LOCAL duk_uint_t duk__selftest_alloc_funcs(duk_alloc_function alloc_func, - duk_realloc_function realloc_func, - duk_free_function free_func, - void *udata) { - duk_uint_t error_count = 0; - void *ptr; - void *new_ptr; - duk_small_int_t i, j; - unsigned char x; - - if (alloc_func == NULL || realloc_func == NULL || free_func == NULL) { - return 0; - } - - for (i = 1; i <= 256; i++) { - ptr = alloc_func(udata, (duk_size_t) i); - if (ptr == NULL) { - DUK_D(DUK_DPRINT("alloc failed, ignore")); - continue; /* alloc failed, ignore */ - } - for (j = 0; j < i; j++) { - ((unsigned char *) ptr)[j] = (unsigned char) (0x80 + j); - } - new_ptr = realloc_func(udata, ptr, 1024); - if (new_ptr == NULL) { - DUK_D(DUK_DPRINT("realloc failed, ignore")); - free_func(udata, ptr); - continue; /* realloc failed, ignore */ - } - ptr = new_ptr; - for (j = 0; j < i; j++) { - x = ((unsigned char *) ptr)[j]; - if (x != (unsigned char) (0x80 + j)) { - DUK_D(DUK_DPRINT("byte at index %ld doesn't match after realloc: %02lx", - (long) j, - (unsigned long) x)); - DUK__FAILED("byte compare after realloc"); - break; - } - } - free_func(udata, ptr); - } - - return error_count; -} - -/* - * Self test main - */ - -DUK_INTERNAL duk_uint_t duk_selftest_run_tests(duk_alloc_function alloc_func, - duk_realloc_function realloc_func, - duk_free_function free_func, - void *udata) { - duk_uint_t error_count = 0; - - DUK_D(DUK_DPRINT("self test starting")); - - error_count += duk__selftest_types(); - error_count += duk__selftest_packed_tval(); - error_count += duk__selftest_twos_complement(); - error_count += duk__selftest_byte_order(); - error_count += duk__selftest_bswap_macros(); - error_count += duk__selftest_double_union_size(); - error_count += duk__selftest_double_aliasing(); - error_count += duk__selftest_double_zero_sign(); - error_count += duk__selftest_double_rounding(); - error_count += duk__selftest_fmod(); - error_count += duk__selftest_struct_align(); - error_count += duk__selftest_64bit_arithmetic(); - error_count += duk__selftest_cast_double_to_small_uint(); - error_count += duk__selftest_cast_double_to_uint32(); - error_count += duk__selftest_alloc_funcs(alloc_func, realloc_func, free_func, udata); - - DUK_D(DUK_DPRINT("self test complete, total error count: %ld", (long) error_count)); - - return error_count; -} - -#endif /* DUK_USE_SELF_TESTS */ - -/* automatic undefs */ -#undef DUK__DBLUNION_CMP_FALSE -#undef DUK__DBLUNION_CMP_TRUE -#undef DUK__DOUBLE_COMPARE -#undef DUK__DOUBLE_INIT -#undef DUK__FAILED -#undef DUK__U32_INIT -/* #include duk_internal.h -> already included */ -#line 2 "duk_tval.c" - -#if defined(DUK_USE_FASTINT) - -/* - * Manually optimized double-to-fastint downgrade check. - * - * This check has a large impact on performance, especially for fastint - * slow paths, so must be changed carefully. The code should probably be - * optimized for the case where the result does not fit into a fastint, - * to minimize the penalty for "slow path code" dealing with fractions etc. - * - * At least on one tested soft float ARM platform double-to-int64 coercion - * is very slow (and sometimes produces incorrect results, see self tests). - * This algorithm combines a fastint compatibility check and extracting the - * integer value from an IEEE double for setting the tagged fastint. For - * other platforms a more naive approach might be better. - * - * See doc/fastint.rst for details. - */ - -DUK_INTERNAL DUK_ALWAYS_INLINE void duk_tval_set_number_chkfast_fast(duk_tval *tv, duk_double_t x) { - duk_double_union du; - duk_int64_t i; - duk_small_int_t expt; - duk_small_int_t shift; - - /* XXX: optimize for packed duk_tval directly? */ - - du.d = x; - i = (duk_int64_t) DUK_DBLUNION_GET_INT64(&du); - expt = (duk_small_int_t) ((i >> 52) & 0x07ff); - shift = expt - 1023; - - if (shift >= 0 && shift <= 46) { /* exponents 1023 to 1069 */ - duk_int64_t t; - - if (((DUK_I64_CONSTANT(0x000fffffffffffff) >> shift) & i) == 0) { - t = i | DUK_I64_CONSTANT(0x0010000000000000); /* implicit leading one */ - t = t & DUK_I64_CONSTANT(0x001fffffffffffff); - t = t >> (52 - shift); - if (i < 0) { - t = -t; - } - DUK_TVAL_SET_FASTINT(tv, t); - return; - } - } else if (shift == -1023) { /* exponent 0 */ - if (i >= 0 && (i & DUK_I64_CONSTANT(0x000fffffffffffff)) == 0) { - /* Note: reject negative zero. */ - DUK_TVAL_SET_FASTINT(tv, (duk_int64_t) 0); - return; - } - } else if (shift == 47) { /* exponent 1070 */ - if (i < 0 && (i & DUK_I64_CONSTANT(0x000fffffffffffff)) == 0) { - DUK_TVAL_SET_FASTINT(tv, (duk_int64_t) DUK_FASTINT_MIN); - return; - } - } - - DUK_TVAL_SET_DOUBLE(tv, x); - return; -} - -DUK_INTERNAL DUK_NOINLINE void duk_tval_set_number_chkfast_slow(duk_tval *tv, duk_double_t x) { - duk_tval_set_number_chkfast_fast(tv, x); -} - -/* - * Manually optimized number-to-double conversion - */ - -#if defined(DUK_USE_FASTINT) && defined(DUK_USE_PACKED_TVAL) -DUK_INTERNAL DUK_ALWAYS_INLINE duk_double_t duk_tval_get_number_packed(duk_tval *tv) { - duk_double_union du; - duk_uint64_t t; - - t = (duk_uint64_t) DUK_DBLUNION_GET_UINT64(tv); - if ((t >> 48) != DUK_TAG_FASTINT) { - return tv->d; - } else if (t & DUK_U64_CONSTANT(0x0000800000000000)) { - t = (duk_uint64_t) (-((duk_int64_t) t)); /* avoid unary minus on unsigned */ - t = t & DUK_U64_CONSTANT(0x0000ffffffffffff); /* negative */ - t |= DUK_U64_CONSTANT(0xc330000000000000); - DUK_DBLUNION_SET_UINT64(&du, t); - return du.d + 4503599627370496.0; /* 1 << 52 */ - } else if (t != 0) { - t &= DUK_U64_CONSTANT(0x0000ffffffffffff); /* positive */ - t |= DUK_U64_CONSTANT(0x4330000000000000); - DUK_DBLUNION_SET_UINT64(&du, t); - return du.d - 4503599627370496.0; /* 1 << 52 */ - } else { - return 0.0; /* zero */ - } -} -#endif /* DUK_USE_FASTINT && DUK_USE_PACKED_TVAL */ - -#if 0 /* unused */ -#if defined(DUK_USE_FASTINT) && !defined(DUK_USE_PACKED_TVAL) -DUK_INTERNAL DUK_ALWAYS_INLINE duk_double_t duk_tval_get_number_unpacked(duk_tval *tv) { - duk_double_union du; - duk_uint64_t t; - - DUK_ASSERT(tv->t == DUK_TAG_NUMBER || tv->t == DUK_TAG_FASTINT); - - if (tv->t == DUK_TAG_FASTINT) { - if (tv->v.fi >= 0) { - t = DUK_U64_CONSTANT(0x4330000000000000) | (duk_uint64_t) tv->v.fi; - DUK_DBLUNION_SET_UINT64(&du, t); - return du.d - 4503599627370496.0; /* 1 << 52 */ - } else { - t = DUK_U64_CONSTANT(0xc330000000000000) | (duk_uint64_t) (-tv->v.fi); - DUK_DBLUNION_SET_UINT64(&du, t); - return du.d + 4503599627370496.0; /* 1 << 52 */ - } - } else { - return tv->v.d; - } -} -#endif /* DUK_USE_FASTINT && DUK_USE_PACKED_TVAL */ -#endif /* 0 */ - -#if defined(DUK_USE_FASTINT) && !defined(DUK_USE_PACKED_TVAL) -DUK_INTERNAL DUK_ALWAYS_INLINE duk_double_t duk_tval_get_number_unpacked_fastint(duk_tval *tv) { - duk_double_union du; - duk_uint64_t t; - - DUK_ASSERT(tv->t == DUK_TAG_FASTINT); - - if (tv->v.fi >= 0) { - t = DUK_U64_CONSTANT(0x4330000000000000) | (duk_uint64_t) tv->v.fi; - DUK_DBLUNION_SET_UINT64(&du, t); - return du.d - 4503599627370496.0; /* 1 << 52 */ - } else { - t = DUK_U64_CONSTANT(0xc330000000000000) | (duk_uint64_t) (-tv->v.fi); - DUK_DBLUNION_SET_UINT64(&du, t); - return du.d + 4503599627370496.0; /* 1 << 52 */ - } -} -#endif /* DUK_USE_FASTINT && DUK_USE_PACKED_TVAL */ - -#endif /* DUK_USE_FASTINT */ - -/* - * Assertion helpers. - */ - -#if defined(DUK_USE_ASSERTIONS) -DUK_INTERNAL void duk_tval_assert_valid(duk_tval *tv) { - DUK_ASSERT(tv != NULL); -} -#endif -#line 1 "duk_unicode_tables.c" -/* - * Unicode support tables automatically generated during build. - */ - -/* #include duk_internal.h -> already included */ - -/* - * Unicode tables containing ranges of Unicode characters in a - * packed format. These tables are used to match non-ASCII - * characters of complex productions by resorting to a linear - * range-by-range comparison. This is very slow, but is expected - * to be very rare in practical ECMAScript source code, and thus - * compactness is most important. - * - * The tables are matched using uni_range_match() and the format - * is described in tools/extract_chars.py. - */ - -#if defined(DUK_USE_SOURCE_NONBMP) -/* IdentifierStart production with ASCII excluded */ -/* duk_unicode_ids_noa[] */ -/* - * Automatically generated by extract_chars.py, do not edit! - */ - -const duk_uint8_t duk_unicode_ids_noa[1116] = { -249,176,176,80,111,7,47,15,47,254,11,197,191,0,72,2,15,115,66,19,50,7,2,34, -2,240,66,244,50,247,185,249,98,241,99,7,241,159,57,240,181,63,31,241,191, -21,18,245,50,15,1,24,27,35,15,2,2,240,239,15,244,156,15,10,241,26,21,6,240, -101,10,4,15,9,240,152,175,39,240,82,127,56,242,100,15,4,8,159,1,240,5,115, -19,240,98,98,4,52,15,2,14,18,47,0,27,9,85,19,240,98,98,18,18,31,17,50,15,5, -47,2,130,34,240,98,98,18,68,15,4,15,1,31,9,12,115,19,240,98,98,18,68,15,16, -18,47,1,15,3,2,84,34,52,18,2,20,20,36,191,8,15,38,114,34,240,114,240,4,15, -12,38,31,16,5,114,34,240,114,146,68,15,18,2,31,1,31,4,114,34,241,147,15,2, -6,41,47,10,86,240,36,240,130,130,3,111,44,242,2,29,111,44,18,2,66,240,130, -2,146,26,3,66,15,7,63,18,15,49,114,241,79,13,79,101,241,191,6,15,2,85,52,4, -24,37,205,15,3,241,98,6,3,241,178,255,224,63,35,54,32,35,63,25,35,63,17,35, -54,32,35,62,47,41,35,63,51,241,127,0,240,47,70,53,79,254,21,227,240,18,240, -166,243,180,168,194,63,0,240,47,0,240,47,0,194,47,1,242,79,21,5,15,53,244, -152,67,241,34,6,243,107,240,255,35,240,227,76,241,197,240,175,40,240,122, -242,95,68,15,79,241,255,3,111,41,240,238,27,241,207,12,241,79,27,43,241,67, -136,241,179,47,27,50,82,20,6,251,15,50,255,224,8,53,63,22,53,55,32,32,32, -47,15,63,37,38,32,66,38,67,53,92,98,38,246,96,224,240,44,245,112,80,57,32, -68,112,32,32,35,42,51,100,80,240,63,25,255,233,107,241,242,241,242,247,87, -52,29,241,98,6,3,242,136,15,2,240,122,98,98,98,98,98,98,98,111,66,15,254, -12,146,240,184,132,52,95,70,114,47,74,35,111,27,47,78,240,63,11,242,127,0, -255,224,244,255,240,0,138,143,60,255,240,4,14,47,2,255,227,127,243,95,30, -63,253,79,0,177,240,111,31,240,47,15,63,64,241,152,63,87,63,37,52,242,42, -34,35,47,7,240,255,36,240,15,34,243,5,64,33,207,12,191,7,240,191,13,143,31, -240,224,240,36,41,180,47,25,240,146,39,240,111,7,64,79,34,32,65,52,48,32, -240,162,58,130,213,53,53,166,38,47,27,43,159,99,240,255,255,0,26,150,223,7, -95,33,255,240,0,255,143,254,6,3,245,175,24,109,70,2,146,194,66,2,18,18,245, -207,19,255,224,93,240,79,48,63,38,241,171,246,100,47,119,241,111,10,127,10, -207,73,69,53,53,50,241,91,47,10,47,3,33,46,61,241,79,107,243,127,37,255, -223,13,79,33,242,31,16,239,14,111,22,191,14,63,20,87,36,241,207,142,240,79, -20,95,20,95,24,159,36,248,239,254,2,154,240,107,127,138,83,2,241,194,20,3, -240,123,240,122,240,255,51,240,50,27,240,107,240,175,56,242,135,31,50,15,1, -50,34,240,223,28,240,212,240,223,21,114,240,207,13,242,107,240,107,240,62, -240,47,96,243,159,41,242,62,242,62,241,79,254,13,15,13,176,159,6,248,207,7, -223,37,243,223,29,241,47,9,240,207,20,240,240,207,19,64,223,32,240,3,240, -112,32,241,95,2,47,9,244,102,32,35,46,41,143,31,241,135,49,63,6,38,33,36, -64,240,64,212,249,15,37,240,67,240,96,241,47,32,240,97,32,250,175,31,241, -179,241,111,32,240,96,242,223,27,224,243,159,11,253,127,28,246,111,48,241, -16,249,39,63,23,240,32,32,240,224,191,24,128,240,112,207,30,240,80,241,79, -41,255,152,47,21,240,48,242,63,14,246,38,33,47,22,240,112,240,181,33,47,16, -240,0,255,224,59,240,63,254,0,31,254,40,207,88,245,255,3,251,79,254,155,15, -254,50,31,254,236,95,254,19,159,255,0,16,173,255,225,43,143,15,246,63,14, -240,79,32,240,35,241,31,5,111,3,255,225,164,243,15,114,243,182,15,52,207, -50,18,15,14,255,240,0,110,169,255,225,229,255,240,1,64,31,254,1,31,35,47,3, -57,255,224,126,255,231,248,245,182,196,136,159,255,0,6,90,244,82,243,114, -19,3,19,50,178,2,98,243,18,51,114,98,240,194,50,66,4,98,255,224,70,63,9,47, -9,47,15,47,9,47,15,47,9,47,15,47,9,47,15,47,9,39,255,232,40,241,219,111,2, -15,254,6,95,28,255,228,8,251,95,45,243,72,15,254,58,131,47,11,33,32,48,41, -35,32,32,112,80,32,32,34,33,32,48,32,32,32,32,33,32,51,38,35,35,32,41,47,1, -98,36,47,1,255,240,0,3,143,255,0,149,201,241,191,254,242,124,252,227,255, -240,0,87,79,0,255,240,0,194,63,254,177,63,254,17,0, -}; -#else -/* IdentifierStart production with ASCII and non-BMP excluded */ -/* duk_unicode_ids_noabmp[] */ -/* - * Automatically generated by extract_chars.py, do not edit! - */ - -const duk_uint8_t duk_unicode_ids_noabmp[625] = { -249,176,176,80,111,7,47,15,47,254,11,197,191,0,72,2,15,115,66,19,50,7,2,34, -2,240,66,244,50,247,185,249,98,241,99,7,241,159,57,240,181,63,31,241,191, -21,18,245,50,15,1,24,27,35,15,2,2,240,239,15,244,156,15,10,241,26,21,6,240, -101,10,4,15,9,240,152,175,39,240,82,127,56,242,100,15,4,8,159,1,240,5,115, -19,240,98,98,4,52,15,2,14,18,47,0,27,9,85,19,240,98,98,18,18,31,17,50,15,5, -47,2,130,34,240,98,98,18,68,15,4,15,1,31,9,12,115,19,240,98,98,18,68,15,16, -18,47,1,15,3,2,84,34,52,18,2,20,20,36,191,8,15,38,114,34,240,114,240,4,15, -12,38,31,16,5,114,34,240,114,146,68,15,18,2,31,1,31,4,114,34,241,147,15,2, -6,41,47,10,86,240,36,240,130,130,3,111,44,242,2,29,111,44,18,2,66,240,130, -2,146,26,3,66,15,7,63,18,15,49,114,241,79,13,79,101,241,191,6,15,2,85,52,4, -24,37,205,15,3,241,98,6,3,241,178,255,224,63,35,54,32,35,63,25,35,63,17,35, -54,32,35,62,47,41,35,63,51,241,127,0,240,47,70,53,79,254,21,227,240,18,240, -166,243,180,168,194,63,0,240,47,0,240,47,0,194,47,1,242,79,21,5,15,53,244, -152,67,241,34,6,243,107,240,255,35,240,227,76,241,197,240,175,40,240,122, -242,95,68,15,79,241,255,3,111,41,240,238,27,241,207,12,241,79,27,43,241,67, -136,241,179,47,27,50,82,20,6,251,15,50,255,224,8,53,63,22,53,55,32,32,32, -47,15,63,37,38,32,66,38,67,53,92,98,38,246,96,224,240,44,245,112,80,57,32, -68,112,32,32,35,42,51,100,80,240,63,25,255,233,107,241,242,241,242,247,87, -52,29,241,98,6,3,242,136,15,2,240,122,98,98,98,98,98,98,98,111,66,15,254, -12,146,240,184,132,52,95,70,114,47,74,35,111,27,47,78,240,63,11,242,127,0, -255,224,244,255,240,0,138,143,60,255,240,4,14,47,2,255,227,127,243,95,30, -63,253,79,0,177,240,111,31,240,47,15,63,64,241,152,63,87,63,37,52,242,42, -34,35,47,7,240,255,36,240,15,34,243,5,64,33,207,12,191,7,240,191,13,143,31, -240,224,240,36,41,180,47,25,240,146,39,240,111,7,64,79,34,32,65,52,48,32, -240,162,58,130,213,53,53,166,38,47,27,43,159,99,240,255,255,0,26,150,223,7, -95,33,255,240,0,255,143,254,6,3,245,175,24,109,70,2,146,194,66,2,18,18,245, -207,19,255,224,93,240,79,48,63,38,241,171,246,100,47,119,241,111,10,127,10, -207,73,69,53,53,50,0, -}; -#endif - -#if defined(DUK_USE_SOURCE_NONBMP) -/* IdentifierStart production with Letter and ASCII excluded */ -/* duk_unicode_ids_m_let_noa[] */ -/* - * Automatically generated by extract_chars.py, do not edit! - */ - -const duk_uint8_t duk_unicode_ids_m_let_noa[42] = { -255,240,0,94,18,255,233,99,241,51,63,254,215,32,240,184,240,2,255,240,6,89, -249,255,240,4,148,79,37,255,224,192,9,15,120,79,255,0,15,30,245,240, -}; -#else -/* IdentifierStart production with Letter, ASCII, and non-BMP excluded */ -/* duk_unicode_ids_m_let_noabmp[] */ -/* - * Automatically generated by extract_chars.py, do not edit! - */ - -const duk_uint8_t duk_unicode_ids_m_let_noabmp[24] = { -255,240,0,94,18,255,233,99,241,51,63,254,215,32,240,184,240,2,255,240,6,89, -249,0, -}; -#endif - -#if defined(DUK_USE_SOURCE_NONBMP) -/* IdentifierPart production with IdentifierStart and ASCII excluded */ -/* duk_unicode_idp_m_ids_noa[] */ -/* - * Automatically generated by extract_chars.py, do not edit! - */ - -const duk_uint8_t duk_unicode_idp_m_ids_noa[576] = { -255,225,243,246,15,254,0,116,255,191,29,32,33,33,32,243,170,242,47,15,112, -245,118,53,49,35,57,240,144,241,15,11,244,218,240,25,241,56,160,240,163,40, -34,36,241,210,246,158,47,17,242,130,47,2,38,177,57,240,50,242,160,38,49,50, -160,177,57,240,0,50,242,160,36,81,50,64,240,107,64,194,242,160,39,34,34, -240,97,57,181,34,242,160,38,49,50,145,177,57,240,64,242,212,66,35,160,240, -9,240,36,242,182,34,35,129,193,57,240,50,242,160,38,34,35,129,193,57,240, -35,242,145,38,34,35,160,177,57,240,65,243,128,85,32,39,121,49,242,240,54, -215,41,244,144,56,197,57,243,1,121,192,32,32,81,242,63,4,33,106,47,20,160, -245,111,4,41,211,82,34,54,67,235,46,255,225,179,47,254,42,98,240,242,240, -241,241,1,243,47,16,160,57,241,50,57,245,209,241,64,246,139,91,185,247,41, -242,244,242,185,47,13,58,121,240,141,243,68,242,31,1,201,240,56,210,241,12, -57,241,237,242,47,4,153,121,246,130,47,5,80,112,50,251,143,42,36,255,225,0, -31,35,31,5,15,109,197,4,191,254,175,34,247,240,245,47,16,255,225,30,95,91, -31,255,0,100,121,159,55,5,159,18,31,66,31,254,0,64,64,80,240,148,244,161, -242,79,2,185,127,2,234,240,231,240,188,241,227,242,29,240,25,192,185,242, -29,208,145,57,241,50,242,64,34,49,97,32,241,180,97,253,231,33,57,255,240,3, -225,128,255,225,213,240,15,2,240,4,31,10,47,178,159,23,15,254,27,16,253,64, -248,116,255,224,25,159,254,68,178,33,99,241,162,80,249,113,255,225,49,57, -159,254,16,10,250,18,242,126,241,25,240,19,241,250,242,121,114,241,109,41, -97,241,224,210,242,45,147,73,244,75,112,249,43,105,115,242,145,38,49,50, -160,177,54,68,251,47,2,169,80,244,63,4,217,252,118,56,240,209,244,79,1,240, -25,244,60,153,244,94,89,254,78,249,121,253,150,54,64,240,233,241,166,35, -144,170,242,15,0,255,224,137,114,127,2,159,42,240,98,223,108,84,2,18,98,9, -159,34,66,18,73,159,254,3,211,255,240,3,165,217,247,132,242,214,240,185, -255,226,233,2,242,120,63,255,0,59,254,31,255,0,3,186,68,89,115,111,16,63, -134,47,254,71,223,34,255,224,244,242,117,242,41,15,0,15,8,66,239,254,68,70, -47,1,54,33,36,255,118,169,255,224,150,223,254,76,166,245,246,105,255,240, -192,105,175,224,0, -}; -#else -/* IdentifierPart production with IdentifierStart, ASCII, and non-BMP excluded */ -/* duk_unicode_idp_m_ids_noabmp[] */ -/* - * Automatically generated by extract_chars.py, do not edit! - */ - -const duk_uint8_t duk_unicode_idp_m_ids_noabmp[358] = { -255,225,243,246,15,254,0,116,255,191,29,32,33,33,32,243,170,242,47,15,112, -245,118,53,49,35,57,240,144,241,15,11,244,218,240,25,241,56,160,240,163,40, -34,36,241,210,246,158,47,17,242,130,47,2,38,177,57,240,50,242,160,38,49,50, -160,177,57,240,0,50,242,160,36,81,50,64,240,107,64,194,242,160,39,34,34, -240,97,57,181,34,242,160,38,49,50,145,177,57,240,64,242,212,66,35,160,240, -9,240,36,242,182,34,35,129,193,57,240,50,242,160,38,34,35,129,193,57,240, -35,242,145,38,34,35,160,177,57,240,65,243,128,85,32,39,121,49,242,240,54, -215,41,244,144,56,197,57,243,1,121,192,32,32,81,242,63,4,33,106,47,20,160, -245,111,4,41,211,82,34,54,67,235,46,255,225,179,47,254,42,98,240,242,240, -241,241,1,243,47,16,160,57,241,50,57,245,209,241,64,246,139,91,185,247,41, -242,244,242,185,47,13,58,121,240,141,243,68,242,31,1,201,240,56,210,241,12, -57,241,237,242,47,4,153,121,246,130,47,5,80,112,50,251,143,42,36,255,225,0, -31,35,31,5,15,109,197,4,191,254,175,34,247,240,245,47,16,255,225,30,95,91, -31,255,0,100,121,159,55,5,159,18,31,66,31,254,0,64,64,80,240,148,244,161, -242,79,2,185,127,2,234,240,231,240,188,241,227,242,29,240,25,192,185,242, -29,208,145,57,241,50,242,64,34,49,97,32,241,180,97,253,231,33,57,255,240,3, -225,128,255,225,213,240,15,2,240,4,31,10,47,178,159,23,0, -}; -#endif - -/* - * Case conversion tables generated using tools/extract_caseconv.py. - */ - -/* duk_unicode_caseconv_uc[] */ -/* duk_unicode_caseconv_lc[] */ - -/* - * Automatically generated by extract_caseconv.py, do not edit! - */ - -const duk_uint8_t duk_unicode_caseconv_uc[1411] = { -152,3,128,3,0,184,7,192,6,192,112,35,242,199,224,64,74,192,49,32,128,162, -128,108,65,1,189,129,254,131,3,173,3,136,6,7,98,7,34,68,15,12,14,140,72,30, -104,28,112,32,67,0,65,4,0,138,0,128,4,1,88,65,76,83,8,104,14,72,43,16,253, -28,189,6,39,240,39,224,24,114,12,16,132,16,248,0,248,64,129,241,1,241,128, -195,228,3,229,2,7,204,7,206,4,15,160,15,164,6,31,96,31,104,16,62,224,63, -116,8,125,200,127,32,32,251,176,254,208,33,247,129,255,128,67,239,67,253, -64,135,223,7,254,129,15,216,15,220,2,31,208,31,216,4,63,192,63,208,8,133, -192,133,128,129,38,129,37,177,162,195,2,192,5,229,160,2,20,9,170,220,4,232, -40,127,160,255,144,154,136,4,4,4,0,192,9,152,9,144,48,19,160,19,145,0,41, -96,41,69,192,94,128,94,65,128,193,128,193,2,1,161,1,160,6,3,104,3,102,8,7, -56,7,52,64,14,248,14,240,144,31,144,31,130,128,68,96,68,66,64,145,192,145, -130,129,184,129,184,2,3,217,3,216,24,8,194,8,192,68,18,44,18,40,216,38,16, -38,8,112,77,16,77,6,3,192,35,192,18,199,168,71,168,24,15,168,143,172,132, -44,104,44,103,6,89,2,89,0,200,179,176,179,172,21,50,13,50,1,122,104,26,104, -1,212,228,116,228,65,233,204,233,204,143,211,189,83,188,130,167,127,167, -126,11,79,35,79,32,10,158,94,158,88,85,61,173,61,160,97,192,107,64,107,1,0, -226,128,226,3,1,198,1,196,6,3,228,3,226,8,10,0,6,152,16,31,192,31,184,34, -199,50,199,32,65,128,196,0,195,130,1,185,1,184,4,4,205,79,84,8,0,192,143,0, -142,193,1,52,128,203,2,45,39,16,199,5,253,0,11,80,57,192,15,240,23,128,19, -16,4,144,23,240,5,48,24,0,36,48,25,32,25,16,25,80,31,96,25,144,25,128,25, -160,35,208,25,224,34,0,26,128,26,112,27,240,31,112,29,208,24,224,31,48,31, -16,37,2,198,240,37,18,198,208,37,34,199,0,37,48,24,16,37,64,24,96,37,144, -24,240,37,176,25,0,37,202,122,176,38,0,25,48,38,26,122,192,38,48,25,64,38, -90,120,208,38,128,25,112,38,178,198,32,38,202,122,208,39,18,198,224,39,32, -25,208,39,80,25,240,39,210,198,64,40,42,124,80,40,122,123,16,40,128,26,224, -40,144,36,64,40,192,36,80,41,32,27,112,41,218,123,32,41,234,123,0,52,80,57, -144,55,112,55,96,58,192,56,96,60,32,58,48,60,192,56,192,61,0,57,32,61,16, -57,128,61,80,58,96,61,96,58,0,61,112,60,240,63,0,57,160,63,16,58,16,63,32, -63,144,63,48,55,240,63,80,57,80,76,240,76,1,200,0,65,33,200,16,65,65,200, -32,65,225,200,80,66,33,200,96,66,161,200,112,70,33,200,138,100,161,215,154, -119,209,215,210,198,49,216,234,124,97,233,177,230,1,251,224,57,145,254,81, -254,194,20,226,19,34,24,66,24,50,198,18,198,2,198,80,35,162,198,96,35,226, -207,50,207,42,120,202,120,186,121,74,124,74,124,58,124,42,181,58,123,60, -192,27,240,2,152,2,152,10,76,5,120,0,156,3,225,0,37,1,134,1,200,96,115,32, -97,0,96,32,118,24,29,40,24,64,24,8,44,60,10,106,10,164,61,45,0,36,1,152, -143,75,192,10,128,97,3,211,16,2,184,24,80,244,204,0,178,6,20,61,53,0,32, -129,95,15,168,64,116,160,98,99,234,88,29,40,24,152,24,0,250,166,7,74,6,38, -6,2,62,173,129,210,129,137,129,161,15,192,67,225,0,115,35,240,48,248,72,28, -200,252,20,62,20,7,50,63,7,15,133,129,204,143,194,67,225,128,115,35,240, -176,248,104,28,200,252,52,62,28,7,50,63,15,15,135,129,204,143,196,67,225,0, -115,35,241,48,248,72,28,200,252,84,62,20,7,50,63,23,15,133,129,204,143,198, -67,225,128,115,35,241,176,248,104,28,200,252,116,62,28,7,50,63,31,15,135, -129,204,143,200,67,229,0,115,35,242,48,249,72,28,200,252,148,62,84,7,50,63, -39,15,149,129,204,143,202,67,229,128,115,35,242,176,249,104,28,200,252,180, -62,92,7,50,63,47,15,151,129,204,143,204,67,229,0,115,35,243,48,249,72,28, -200,252,212,62,84,7,50,63,55,15,149,129,204,143,206,67,229,128,115,35,243, -176,249,104,28,200,252,244,62,92,7,50,63,63,15,151,129,204,143,208,67,237, -0,115,35,244,48,251,72,28,200,253,20,62,212,7,50,63,71,15,181,129,204,143, -210,67,237,128,115,35,244,176,251,104,28,200,253,52,62,220,7,50,63,79,15, -183,129,204,143,212,67,237,0,115,35,245,48,251,72,28,200,253,84,62,212,7, -50,63,87,15,181,129,204,143,214,67,237,128,115,35,245,176,251,104,28,200, -253,116,62,220,7,50,63,95,15,183,129,204,143,217,67,247,64,115,35,246,112, -28,136,28,200,253,164,7,12,7,50,63,109,1,200,129,161,15,219,224,114,32,104, -64,115,35,247,144,28,136,28,200,254,20,63,148,7,50,63,135,1,203,129,204, -143,226,64,113,32,115,35,248,208,28,184,26,16,254,62,7,46,6,132,7,50,63, -153,1,203,129,204,143,233,96,115,32,97,0,96,3,250,120,28,200,24,64,24,8, -254,180,7,50,6,132,63,175,129,204,129,132,1,161,15,241,96,116,160,97,0,96, -3,252,120,29,40,24,64,24,8,255,36,7,66,6,38,63,205,1,210,129,161,15,243, -224,116,160,97,0,104,67,254,80,255,208,28,200,255,156,7,82,7,50,63,233,1, -199,129,204,143,251,64,117,32,104,67,254,248,29,72,26,16,28,200,255,228,7, -82,7,51,246,1,0,35,0,35,125,128,192,8,192,9,63,96,80,2,48,2,103,216,30,0, -140,0,140,0,147,246,9,128,35,0,35,0,38,125,130,192,10,96,10,159,96,208,2, -152,2,167,216,156,10,136,10,141,246,41,2,162,2,154,253,138,192,168,128,167, -127,98,208,42,112,42,55,216,188,10,136,10,122, -}; -const duk_uint8_t duk_unicode_caseconv_lc[706] = { -160,3,0,3,128,184,6,192,7,192,112,24,144,37,96,64,54,32,81,64,128,226,0, -235,65,129,199,1,230,130,3,145,3,177,34,7,70,7,134,36,15,244,13,236,24,32, -0,34,129,0,65,0,67,4,0,166,32,172,41,132,40,11,64,19,9,208,85,184,80,19, -240,19,248,12,57,32,33,160,172,114,244,67,244,24,248,64,248,0,129,241,129, -241,0,195,229,3,228,2,7,206,7,204,4,15,164,15,160,6,31,104,31,96,16,63,16, -63,0,32,126,96,126,64,64,253,64,253,0,129,251,129,251,0,67,247,67,238,0, -135,242,7,220,130,15,236,15,232,2,31,218,31,118,4,63,208,63,192,8,127,168, -125,232,16,255,192,251,192,33,255,161,247,192,68,44,4,46,4,9,45,137,52,13, -22,0,22,24,47,44,126,2,63,5,254,67,254,130,106,48,16,0,16,19,0,38,64,38,96, -192,78,64,78,132,0,165,0,165,151,1,121,1,122,6,3,4,3,6,8,6,128,6,132,24,13, -152,13,160,32,28,176,28,193,32,59,192,59,226,64,124,128,124,193,0,252,0, -252,148,2,34,2,35,18,4,140,4,142,20,13,192,13,196,16,30,192,30,200,192,70, -0,70,18,32,145,64,145,102,193,48,65,48,131,130,104,2,104,176,30,0,30,1,150, -61,64,61,66,192,125,100,125,68,33,99,57,99,64,50,200,2,200,22,69,157,101, -157,128,169,144,41,144,75,211,64,83,64,142,167,34,167,35,15,78,101,78,102, -126,157,230,157,232,21,59,245,59,248,90,121,10,121,16,84,242,212,242,226, -169,237,41,237,67,12,3,76,5,0,8,6,176,6,180,16,14,32,14,48,48,28,80,28,96, -64,126,224,127,0,139,28,139,28,193,6,3,14,3,16,8,6,224,6,228,21,61,80,19, -48,32,3,1,150,2,105,4,4,118,4,120,8,67,28,180,156,23,240,192,94,0,63,192, -96,64,148,192,97,128,149,0,99,128,119,64,99,192,150,64,100,0,150,192,100, -64,100,128,100,192,152,0,101,0,152,192,101,192,154,0,102,0,102,64,103,64, -156,128,103,192,157,64,105,192,106,0,107,128,162,0,109,192,164,128,124,64, -124,192,125,128,101,64,125,192,111,192,136,0,103,128,142,139,25,64,143,64, -102,128,143,139,25,128,144,192,96,0,145,0,162,64,145,64,163,0,221,128,221, -192,223,192,252,192,225,128,235,0,227,0,243,0,243,192,245,192,253,0,238,0, -254,64,252,129,48,1,51,199,167,128,55,199,239,7,236,199,243,7,240,199,251, -7,249,71,255,7,252,200,73,128,242,72,74,128,26,200,74,192,57,72,76,136,83, -136,96,200,97,11,24,11,24,75,24,128,154,203,24,199,95,75,25,0,159,75,27,64, -148,75,27,128,156,75,27,192,148,11,28,0,148,139,60,139,60,233,223,71,94, -105,226,233,227,41,227,64,153,105,234,192,151,41,235,0,152,105,235,64,155, -41,236,0,167,169,236,64,161,233,236,128,167,105,236,234,212,233,240,169, -240,233,241,41,229,41,241,64,160,169,241,135,99,128,128,152,64,13,32,96, -224, -}; - -#if defined(DUK_USE_REGEXP_CANON_WORKAROUND) -/* - * Automatically generated by extract_caseconv.py, do not edit! - */ - -const duk_uint16_t duk_unicode_re_canon_lookup[65536] = { -0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27, -28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52, -53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77, -78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,65,66,67,68,69,70, -71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,123,124,125, -126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143, -144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,160,161, -162,163,164,165,166,167,168,169,170,171,172,173,174,175,176,177,178,179, -180,924,182,183,184,185,186,187,188,189,190,191,192,193,194,195,196,197, -198,199,200,201,202,203,204,205,206,207,208,209,210,211,212,213,214,215, -216,217,218,219,220,221,222,223,192,193,194,195,196,197,198,199,200,201, -202,203,204,205,206,207,208,209,210,211,212,213,214,247,216,217,218,219, -220,221,222,376,256,256,258,258,260,260,262,262,264,264,266,266,268,268, -270,270,272,272,274,274,276,276,278,278,280,280,282,282,284,284,286,286, -288,288,290,290,292,292,294,294,296,296,298,298,300,300,302,302,304,305, -306,306,308,308,310,310,312,313,313,315,315,317,317,319,319,321,321,323, -323,325,325,327,327,329,330,330,332,332,334,334,336,336,338,338,340,340, -342,342,344,344,346,346,348,348,350,350,352,352,354,354,356,356,358,358, -360,360,362,362,364,364,366,366,368,368,370,370,372,372,374,374,376,377, -377,379,379,381,381,383,579,385,386,386,388,388,390,391,391,393,394,395, -395,397,398,399,400,401,401,403,404,502,406,407,408,408,573,411,412,413, -544,415,416,416,418,418,420,420,422,423,423,425,426,427,428,428,430,431, -431,433,434,435,435,437,437,439,440,440,442,443,444,444,446,503,448,449, -450,451,452,452,452,455,455,455,458,458,458,461,461,463,463,465,465,467, -467,469,469,471,471,473,473,475,475,398,478,478,480,480,482,482,484,484, -486,486,488,488,490,490,492,492,494,494,496,497,497,497,500,500,502,503, -504,504,506,506,508,508,510,510,512,512,514,514,516,516,518,518,520,520, -522,522,524,524,526,526,528,528,530,530,532,532,534,534,536,536,538,538, -540,540,542,542,544,545,546,546,548,548,550,550,552,552,554,554,556,556, -558,558,560,560,562,562,564,565,566,567,568,569,570,571,571,573,574,11390, -11391,577,577,579,580,581,582,582,584,584,586,586,588,588,590,590,11375, -11373,11376,385,390,597,393,394,600,399,602,400,42923L,605,606,607,403, -42924L,610,404,612,42893L,42922L,615,407,406,42926L,11362,42925L,621,622, -412,624,11374,413,627,628,415,630,631,632,633,634,635,636,11364,638,639, -422,641,42949L,425,644,645,646,42929L,430,580,433,434,581,653,654,655,656, -657,439,659,660,661,662,663,664,665,666,667,668,42930L,42928L,671,672,673, -674,675,676,677,678,679,680,681,682,683,684,685,686,687,688,689,690,691, -692,693,694,695,696,697,698,699,700,701,702,703,704,705,706,707,708,709, -710,711,712,713,714,715,716,717,718,719,720,721,722,723,724,725,726,727, -728,729,730,731,732,733,734,735,736,737,738,739,740,741,742,743,744,745, -746,747,748,749,750,751,752,753,754,755,756,757,758,759,760,761,762,763, -764,765,766,767,768,769,770,771,772,773,774,775,776,777,778,779,780,781, -782,783,784,785,786,787,788,789,790,791,792,793,794,795,796,797,798,799, -800,801,802,803,804,805,806,807,808,809,810,811,812,813,814,815,816,817, -818,819,820,821,822,823,824,825,826,827,828,829,830,831,832,833,834,835, -836,921,838,839,840,841,842,843,844,845,846,847,848,849,850,851,852,853, -854,855,856,857,858,859,860,861,862,863,864,865,866,867,868,869,870,871, -872,873,874,875,876,877,878,879,880,880,882,882,884,885,886,886,888,889, -890,1021,1022,1023,894,895,896,897,898,899,900,901,902,903,904,905,906,907, -908,909,910,911,912,913,914,915,916,917,918,919,920,921,922,923,924,925, -926,927,928,929,930,931,932,933,934,935,936,937,938,939,902,904,905,906, -944,913,914,915,916,917,918,919,920,921,922,923,924,925,926,927,928,929, -931,931,932,933,934,935,936,937,938,939,908,910,911,975,914,920,978,979, -980,934,928,975,984,984,986,986,988,988,990,990,992,992,994,994,996,996, -998,998,1000,1000,1002,1002,1004,1004,1006,1006,922,929,1017,895,1012,917, -1014,1015,1015,1017,1018,1018,1020,1021,1022,1023,1024,1025,1026,1027,1028, -1029,1030,1031,1032,1033,1034,1035,1036,1037,1038,1039,1040,1041,1042,1043, -1044,1045,1046,1047,1048,1049,1050,1051,1052,1053,1054,1055,1056,1057,1058, -1059,1060,1061,1062,1063,1064,1065,1066,1067,1068,1069,1070,1071,1040,1041, -1042,1043,1044,1045,1046,1047,1048,1049,1050,1051,1052,1053,1054,1055,1056, -1057,1058,1059,1060,1061,1062,1063,1064,1065,1066,1067,1068,1069,1070,1071, -1024,1025,1026,1027,1028,1029,1030,1031,1032,1033,1034,1035,1036,1037,1038, -1039,1120,1120,1122,1122,1124,1124,1126,1126,1128,1128,1130,1130,1132,1132, -1134,1134,1136,1136,1138,1138,1140,1140,1142,1142,1144,1144,1146,1146,1148, -1148,1150,1150,1152,1152,1154,1155,1156,1157,1158,1159,1160,1161,1162,1162, -1164,1164,1166,1166,1168,1168,1170,1170,1172,1172,1174,1174,1176,1176,1178, -1178,1180,1180,1182,1182,1184,1184,1186,1186,1188,1188,1190,1190,1192,1192, -1194,1194,1196,1196,1198,1198,1200,1200,1202,1202,1204,1204,1206,1206,1208, -1208,1210,1210,1212,1212,1214,1214,1216,1217,1217,1219,1219,1221,1221,1223, -1223,1225,1225,1227,1227,1229,1229,1216,1232,1232,1234,1234,1236,1236,1238, -1238,1240,1240,1242,1242,1244,1244,1246,1246,1248,1248,1250,1250,1252,1252, -1254,1254,1256,1256,1258,1258,1260,1260,1262,1262,1264,1264,1266,1266,1268, -1268,1270,1270,1272,1272,1274,1274,1276,1276,1278,1278,1280,1280,1282,1282, -1284,1284,1286,1286,1288,1288,1290,1290,1292,1292,1294,1294,1296,1296,1298, -1298,1300,1300,1302,1302,1304,1304,1306,1306,1308,1308,1310,1310,1312,1312, -1314,1314,1316,1316,1318,1318,1320,1320,1322,1322,1324,1324,1326,1326,1328, -1329,1330,1331,1332,1333,1334,1335,1336,1337,1338,1339,1340,1341,1342,1343, -1344,1345,1346,1347,1348,1349,1350,1351,1352,1353,1354,1355,1356,1357,1358, -1359,1360,1361,1362,1363,1364,1365,1366,1367,1368,1369,1370,1371,1372,1373, -1374,1375,1376,1329,1330,1331,1332,1333,1334,1335,1336,1337,1338,1339,1340, -1341,1342,1343,1344,1345,1346,1347,1348,1349,1350,1351,1352,1353,1354,1355, -1356,1357,1358,1359,1360,1361,1362,1363,1364,1365,1366,1415,1416,1417,1418, -1419,1420,1421,1422,1423,1424,1425,1426,1427,1428,1429,1430,1431,1432,1433, -1434,1435,1436,1437,1438,1439,1440,1441,1442,1443,1444,1445,1446,1447,1448, -1449,1450,1451,1452,1453,1454,1455,1456,1457,1458,1459,1460,1461,1462,1463, -1464,1465,1466,1467,1468,1469,1470,1471,1472,1473,1474,1475,1476,1477,1478, -1479,1480,1481,1482,1483,1484,1485,1486,1487,1488,1489,1490,1491,1492,1493, -1494,1495,1496,1497,1498,1499,1500,1501,1502,1503,1504,1505,1506,1507,1508, -1509,1510,1511,1512,1513,1514,1515,1516,1517,1518,1519,1520,1521,1522,1523, -1524,1525,1526,1527,1528,1529,1530,1531,1532,1533,1534,1535,1536,1537,1538, -1539,1540,1541,1542,1543,1544,1545,1546,1547,1548,1549,1550,1551,1552,1553, -1554,1555,1556,1557,1558,1559,1560,1561,1562,1563,1564,1565,1566,1567,1568, -1569,1570,1571,1572,1573,1574,1575,1576,1577,1578,1579,1580,1581,1582,1583, -1584,1585,1586,1587,1588,1589,1590,1591,1592,1593,1594,1595,1596,1597,1598, -1599,1600,1601,1602,1603,1604,1605,1606,1607,1608,1609,1610,1611,1612,1613, -1614,1615,1616,1617,1618,1619,1620,1621,1622,1623,1624,1625,1626,1627,1628, -1629,1630,1631,1632,1633,1634,1635,1636,1637,1638,1639,1640,1641,1642,1643, -1644,1645,1646,1647,1648,1649,1650,1651,1652,1653,1654,1655,1656,1657,1658, -1659,1660,1661,1662,1663,1664,1665,1666,1667,1668,1669,1670,1671,1672,1673, -1674,1675,1676,1677,1678,1679,1680,1681,1682,1683,1684,1685,1686,1687,1688, -1689,1690,1691,1692,1693,1694,1695,1696,1697,1698,1699,1700,1701,1702,1703, -1704,1705,1706,1707,1708,1709,1710,1711,1712,1713,1714,1715,1716,1717,1718, -1719,1720,1721,1722,1723,1724,1725,1726,1727,1728,1729,1730,1731,1732,1733, -1734,1735,1736,1737,1738,1739,1740,1741,1742,1743,1744,1745,1746,1747,1748, -1749,1750,1751,1752,1753,1754,1755,1756,1757,1758,1759,1760,1761,1762,1763, -1764,1765,1766,1767,1768,1769,1770,1771,1772,1773,1774,1775,1776,1777,1778, -1779,1780,1781,1782,1783,1784,1785,1786,1787,1788,1789,1790,1791,1792,1793, -1794,1795,1796,1797,1798,1799,1800,1801,1802,1803,1804,1805,1806,1807,1808, -1809,1810,1811,1812,1813,1814,1815,1816,1817,1818,1819,1820,1821,1822,1823, -1824,1825,1826,1827,1828,1829,1830,1831,1832,1833,1834,1835,1836,1837,1838, -1839,1840,1841,1842,1843,1844,1845,1846,1847,1848,1849,1850,1851,1852,1853, -1854,1855,1856,1857,1858,1859,1860,1861,1862,1863,1864,1865,1866,1867,1868, -1869,1870,1871,1872,1873,1874,1875,1876,1877,1878,1879,1880,1881,1882,1883, -1884,1885,1886,1887,1888,1889,1890,1891,1892,1893,1894,1895,1896,1897,1898, -1899,1900,1901,1902,1903,1904,1905,1906,1907,1908,1909,1910,1911,1912,1913, -1914,1915,1916,1917,1918,1919,1920,1921,1922,1923,1924,1925,1926,1927,1928, -1929,1930,1931,1932,1933,1934,1935,1936,1937,1938,1939,1940,1941,1942,1943, -1944,1945,1946,1947,1948,1949,1950,1951,1952,1953,1954,1955,1956,1957,1958, -1959,1960,1961,1962,1963,1964,1965,1966,1967,1968,1969,1970,1971,1972,1973, -1974,1975,1976,1977,1978,1979,1980,1981,1982,1983,1984,1985,1986,1987,1988, -1989,1990,1991,1992,1993,1994,1995,1996,1997,1998,1999,2000,2001,2002,2003, -2004,2005,2006,2007,2008,2009,2010,2011,2012,2013,2014,2015,2016,2017,2018, -2019,2020,2021,2022,2023,2024,2025,2026,2027,2028,2029,2030,2031,2032,2033, -2034,2035,2036,2037,2038,2039,2040,2041,2042,2043,2044,2045,2046,2047,2048, -2049,2050,2051,2052,2053,2054,2055,2056,2057,2058,2059,2060,2061,2062,2063, -2064,2065,2066,2067,2068,2069,2070,2071,2072,2073,2074,2075,2076,2077,2078, -2079,2080,2081,2082,2083,2084,2085,2086,2087,2088,2089,2090,2091,2092,2093, -2094,2095,2096,2097,2098,2099,2100,2101,2102,2103,2104,2105,2106,2107,2108, -2109,2110,2111,2112,2113,2114,2115,2116,2117,2118,2119,2120,2121,2122,2123, -2124,2125,2126,2127,2128,2129,2130,2131,2132,2133,2134,2135,2136,2137,2138, -2139,2140,2141,2142,2143,2144,2145,2146,2147,2148,2149,2150,2151,2152,2153, -2154,2155,2156,2157,2158,2159,2160,2161,2162,2163,2164,2165,2166,2167,2168, -2169,2170,2171,2172,2173,2174,2175,2176,2177,2178,2179,2180,2181,2182,2183, -2184,2185,2186,2187,2188,2189,2190,2191,2192,2193,2194,2195,2196,2197,2198, -2199,2200,2201,2202,2203,2204,2205,2206,2207,2208,2209,2210,2211,2212,2213, -2214,2215,2216,2217,2218,2219,2220,2221,2222,2223,2224,2225,2226,2227,2228, -2229,2230,2231,2232,2233,2234,2235,2236,2237,2238,2239,2240,2241,2242,2243, -2244,2245,2246,2247,2248,2249,2250,2251,2252,2253,2254,2255,2256,2257,2258, -2259,2260,2261,2262,2263,2264,2265,2266,2267,2268,2269,2270,2271,2272,2273, -2274,2275,2276,2277,2278,2279,2280,2281,2282,2283,2284,2285,2286,2287,2288, -2289,2290,2291,2292,2293,2294,2295,2296,2297,2298,2299,2300,2301,2302,2303, -2304,2305,2306,2307,2308,2309,2310,2311,2312,2313,2314,2315,2316,2317,2318, -2319,2320,2321,2322,2323,2324,2325,2326,2327,2328,2329,2330,2331,2332,2333, -2334,2335,2336,2337,2338,2339,2340,2341,2342,2343,2344,2345,2346,2347,2348, -2349,2350,2351,2352,2353,2354,2355,2356,2357,2358,2359,2360,2361,2362,2363, -2364,2365,2366,2367,2368,2369,2370,2371,2372,2373,2374,2375,2376,2377,2378, -2379,2380,2381,2382,2383,2384,2385,2386,2387,2388,2389,2390,2391,2392,2393, -2394,2395,2396,2397,2398,2399,2400,2401,2402,2403,2404,2405,2406,2407,2408, -2409,2410,2411,2412,2413,2414,2415,2416,2417,2418,2419,2420,2421,2422,2423, -2424,2425,2426,2427,2428,2429,2430,2431,2432,2433,2434,2435,2436,2437,2438, -2439,2440,2441,2442,2443,2444,2445,2446,2447,2448,2449,2450,2451,2452,2453, -2454,2455,2456,2457,2458,2459,2460,2461,2462,2463,2464,2465,2466,2467,2468, -2469,2470,2471,2472,2473,2474,2475,2476,2477,2478,2479,2480,2481,2482,2483, -2484,2485,2486,2487,2488,2489,2490,2491,2492,2493,2494,2495,2496,2497,2498, -2499,2500,2501,2502,2503,2504,2505,2506,2507,2508,2509,2510,2511,2512,2513, -2514,2515,2516,2517,2518,2519,2520,2521,2522,2523,2524,2525,2526,2527,2528, -2529,2530,2531,2532,2533,2534,2535,2536,2537,2538,2539,2540,2541,2542,2543, -2544,2545,2546,2547,2548,2549,2550,2551,2552,2553,2554,2555,2556,2557,2558, -2559,2560,2561,2562,2563,2564,2565,2566,2567,2568,2569,2570,2571,2572,2573, -2574,2575,2576,2577,2578,2579,2580,2581,2582,2583,2584,2585,2586,2587,2588, -2589,2590,2591,2592,2593,2594,2595,2596,2597,2598,2599,2600,2601,2602,2603, -2604,2605,2606,2607,2608,2609,2610,2611,2612,2613,2614,2615,2616,2617,2618, -2619,2620,2621,2622,2623,2624,2625,2626,2627,2628,2629,2630,2631,2632,2633, -2634,2635,2636,2637,2638,2639,2640,2641,2642,2643,2644,2645,2646,2647,2648, -2649,2650,2651,2652,2653,2654,2655,2656,2657,2658,2659,2660,2661,2662,2663, -2664,2665,2666,2667,2668,2669,2670,2671,2672,2673,2674,2675,2676,2677,2678, -2679,2680,2681,2682,2683,2684,2685,2686,2687,2688,2689,2690,2691,2692,2693, -2694,2695,2696,2697,2698,2699,2700,2701,2702,2703,2704,2705,2706,2707,2708, -2709,2710,2711,2712,2713,2714,2715,2716,2717,2718,2719,2720,2721,2722,2723, -2724,2725,2726,2727,2728,2729,2730,2731,2732,2733,2734,2735,2736,2737,2738, -2739,2740,2741,2742,2743,2744,2745,2746,2747,2748,2749,2750,2751,2752,2753, -2754,2755,2756,2757,2758,2759,2760,2761,2762,2763,2764,2765,2766,2767,2768, -2769,2770,2771,2772,2773,2774,2775,2776,2777,2778,2779,2780,2781,2782,2783, -2784,2785,2786,2787,2788,2789,2790,2791,2792,2793,2794,2795,2796,2797,2798, -2799,2800,2801,2802,2803,2804,2805,2806,2807,2808,2809,2810,2811,2812,2813, -2814,2815,2816,2817,2818,2819,2820,2821,2822,2823,2824,2825,2826,2827,2828, -2829,2830,2831,2832,2833,2834,2835,2836,2837,2838,2839,2840,2841,2842,2843, -2844,2845,2846,2847,2848,2849,2850,2851,2852,2853,2854,2855,2856,2857,2858, -2859,2860,2861,2862,2863,2864,2865,2866,2867,2868,2869,2870,2871,2872,2873, -2874,2875,2876,2877,2878,2879,2880,2881,2882,2883,2884,2885,2886,2887,2888, -2889,2890,2891,2892,2893,2894,2895,2896,2897,2898,2899,2900,2901,2902,2903, -2904,2905,2906,2907,2908,2909,2910,2911,2912,2913,2914,2915,2916,2917,2918, -2919,2920,2921,2922,2923,2924,2925,2926,2927,2928,2929,2930,2931,2932,2933, -2934,2935,2936,2937,2938,2939,2940,2941,2942,2943,2944,2945,2946,2947,2948, -2949,2950,2951,2952,2953,2954,2955,2956,2957,2958,2959,2960,2961,2962,2963, -2964,2965,2966,2967,2968,2969,2970,2971,2972,2973,2974,2975,2976,2977,2978, -2979,2980,2981,2982,2983,2984,2985,2986,2987,2988,2989,2990,2991,2992,2993, -2994,2995,2996,2997,2998,2999,3000,3001,3002,3003,3004,3005,3006,3007,3008, -3009,3010,3011,3012,3013,3014,3015,3016,3017,3018,3019,3020,3021,3022,3023, -3024,3025,3026,3027,3028,3029,3030,3031,3032,3033,3034,3035,3036,3037,3038, -3039,3040,3041,3042,3043,3044,3045,3046,3047,3048,3049,3050,3051,3052,3053, -3054,3055,3056,3057,3058,3059,3060,3061,3062,3063,3064,3065,3066,3067,3068, -3069,3070,3071,3072,3073,3074,3075,3076,3077,3078,3079,3080,3081,3082,3083, -3084,3085,3086,3087,3088,3089,3090,3091,3092,3093,3094,3095,3096,3097,3098, -3099,3100,3101,3102,3103,3104,3105,3106,3107,3108,3109,3110,3111,3112,3113, -3114,3115,3116,3117,3118,3119,3120,3121,3122,3123,3124,3125,3126,3127,3128, -3129,3130,3131,3132,3133,3134,3135,3136,3137,3138,3139,3140,3141,3142,3143, -3144,3145,3146,3147,3148,3149,3150,3151,3152,3153,3154,3155,3156,3157,3158, -3159,3160,3161,3162,3163,3164,3165,3166,3167,3168,3169,3170,3171,3172,3173, -3174,3175,3176,3177,3178,3179,3180,3181,3182,3183,3184,3185,3186,3187,3188, -3189,3190,3191,3192,3193,3194,3195,3196,3197,3198,3199,3200,3201,3202,3203, -3204,3205,3206,3207,3208,3209,3210,3211,3212,3213,3214,3215,3216,3217,3218, -3219,3220,3221,3222,3223,3224,3225,3226,3227,3228,3229,3230,3231,3232,3233, -3234,3235,3236,3237,3238,3239,3240,3241,3242,3243,3244,3245,3246,3247,3248, -3249,3250,3251,3252,3253,3254,3255,3256,3257,3258,3259,3260,3261,3262,3263, -3264,3265,3266,3267,3268,3269,3270,3271,3272,3273,3274,3275,3276,3277,3278, -3279,3280,3281,3282,3283,3284,3285,3286,3287,3288,3289,3290,3291,3292,3293, -3294,3295,3296,3297,3298,3299,3300,3301,3302,3303,3304,3305,3306,3307,3308, -3309,3310,3311,3312,3313,3314,3315,3316,3317,3318,3319,3320,3321,3322,3323, -3324,3325,3326,3327,3328,3329,3330,3331,3332,3333,3334,3335,3336,3337,3338, -3339,3340,3341,3342,3343,3344,3345,3346,3347,3348,3349,3350,3351,3352,3353, -3354,3355,3356,3357,3358,3359,3360,3361,3362,3363,3364,3365,3366,3367,3368, -3369,3370,3371,3372,3373,3374,3375,3376,3377,3378,3379,3380,3381,3382,3383, -3384,3385,3386,3387,3388,3389,3390,3391,3392,3393,3394,3395,3396,3397,3398, -3399,3400,3401,3402,3403,3404,3405,3406,3407,3408,3409,3410,3411,3412,3413, -3414,3415,3416,3417,3418,3419,3420,3421,3422,3423,3424,3425,3426,3427,3428, -3429,3430,3431,3432,3433,3434,3435,3436,3437,3438,3439,3440,3441,3442,3443, -3444,3445,3446,3447,3448,3449,3450,3451,3452,3453,3454,3455,3456,3457,3458, -3459,3460,3461,3462,3463,3464,3465,3466,3467,3468,3469,3470,3471,3472,3473, -3474,3475,3476,3477,3478,3479,3480,3481,3482,3483,3484,3485,3486,3487,3488, -3489,3490,3491,3492,3493,3494,3495,3496,3497,3498,3499,3500,3501,3502,3503, -3504,3505,3506,3507,3508,3509,3510,3511,3512,3513,3514,3515,3516,3517,3518, -3519,3520,3521,3522,3523,3524,3525,3526,3527,3528,3529,3530,3531,3532,3533, -3534,3535,3536,3537,3538,3539,3540,3541,3542,3543,3544,3545,3546,3547,3548, -3549,3550,3551,3552,3553,3554,3555,3556,3557,3558,3559,3560,3561,3562,3563, -3564,3565,3566,3567,3568,3569,3570,3571,3572,3573,3574,3575,3576,3577,3578, -3579,3580,3581,3582,3583,3584,3585,3586,3587,3588,3589,3590,3591,3592,3593, -3594,3595,3596,3597,3598,3599,3600,3601,3602,3603,3604,3605,3606,3607,3608, -3609,3610,3611,3612,3613,3614,3615,3616,3617,3618,3619,3620,3621,3622,3623, -3624,3625,3626,3627,3628,3629,3630,3631,3632,3633,3634,3635,3636,3637,3638, -3639,3640,3641,3642,3643,3644,3645,3646,3647,3648,3649,3650,3651,3652,3653, -3654,3655,3656,3657,3658,3659,3660,3661,3662,3663,3664,3665,3666,3667,3668, -3669,3670,3671,3672,3673,3674,3675,3676,3677,3678,3679,3680,3681,3682,3683, -3684,3685,3686,3687,3688,3689,3690,3691,3692,3693,3694,3695,3696,3697,3698, -3699,3700,3701,3702,3703,3704,3705,3706,3707,3708,3709,3710,3711,3712,3713, -3714,3715,3716,3717,3718,3719,3720,3721,3722,3723,3724,3725,3726,3727,3728, -3729,3730,3731,3732,3733,3734,3735,3736,3737,3738,3739,3740,3741,3742,3743, -3744,3745,3746,3747,3748,3749,3750,3751,3752,3753,3754,3755,3756,3757,3758, -3759,3760,3761,3762,3763,3764,3765,3766,3767,3768,3769,3770,3771,3772,3773, -3774,3775,3776,3777,3778,3779,3780,3781,3782,3783,3784,3785,3786,3787,3788, -3789,3790,3791,3792,3793,3794,3795,3796,3797,3798,3799,3800,3801,3802,3803, -3804,3805,3806,3807,3808,3809,3810,3811,3812,3813,3814,3815,3816,3817,3818, -3819,3820,3821,3822,3823,3824,3825,3826,3827,3828,3829,3830,3831,3832,3833, -3834,3835,3836,3837,3838,3839,3840,3841,3842,3843,3844,3845,3846,3847,3848, -3849,3850,3851,3852,3853,3854,3855,3856,3857,3858,3859,3860,3861,3862,3863, -3864,3865,3866,3867,3868,3869,3870,3871,3872,3873,3874,3875,3876,3877,3878, -3879,3880,3881,3882,3883,3884,3885,3886,3887,3888,3889,3890,3891,3892,3893, -3894,3895,3896,3897,3898,3899,3900,3901,3902,3903,3904,3905,3906,3907,3908, -3909,3910,3911,3912,3913,3914,3915,3916,3917,3918,3919,3920,3921,3922,3923, -3924,3925,3926,3927,3928,3929,3930,3931,3932,3933,3934,3935,3936,3937,3938, -3939,3940,3941,3942,3943,3944,3945,3946,3947,3948,3949,3950,3951,3952,3953, -3954,3955,3956,3957,3958,3959,3960,3961,3962,3963,3964,3965,3966,3967,3968, -3969,3970,3971,3972,3973,3974,3975,3976,3977,3978,3979,3980,3981,3982,3983, -3984,3985,3986,3987,3988,3989,3990,3991,3992,3993,3994,3995,3996,3997,3998, -3999,4000,4001,4002,4003,4004,4005,4006,4007,4008,4009,4010,4011,4012,4013, -4014,4015,4016,4017,4018,4019,4020,4021,4022,4023,4024,4025,4026,4027,4028, -4029,4030,4031,4032,4033,4034,4035,4036,4037,4038,4039,4040,4041,4042,4043, -4044,4045,4046,4047,4048,4049,4050,4051,4052,4053,4054,4055,4056,4057,4058, -4059,4060,4061,4062,4063,4064,4065,4066,4067,4068,4069,4070,4071,4072,4073, -4074,4075,4076,4077,4078,4079,4080,4081,4082,4083,4084,4085,4086,4087,4088, -4089,4090,4091,4092,4093,4094,4095,4096,4097,4098,4099,4100,4101,4102,4103, -4104,4105,4106,4107,4108,4109,4110,4111,4112,4113,4114,4115,4116,4117,4118, -4119,4120,4121,4122,4123,4124,4125,4126,4127,4128,4129,4130,4131,4132,4133, -4134,4135,4136,4137,4138,4139,4140,4141,4142,4143,4144,4145,4146,4147,4148, -4149,4150,4151,4152,4153,4154,4155,4156,4157,4158,4159,4160,4161,4162,4163, -4164,4165,4166,4167,4168,4169,4170,4171,4172,4173,4174,4175,4176,4177,4178, -4179,4180,4181,4182,4183,4184,4185,4186,4187,4188,4189,4190,4191,4192,4193, -4194,4195,4196,4197,4198,4199,4200,4201,4202,4203,4204,4205,4206,4207,4208, -4209,4210,4211,4212,4213,4214,4215,4216,4217,4218,4219,4220,4221,4222,4223, -4224,4225,4226,4227,4228,4229,4230,4231,4232,4233,4234,4235,4236,4237,4238, -4239,4240,4241,4242,4243,4244,4245,4246,4247,4248,4249,4250,4251,4252,4253, -4254,4255,4256,4257,4258,4259,4260,4261,4262,4263,4264,4265,4266,4267,4268, -4269,4270,4271,4272,4273,4274,4275,4276,4277,4278,4279,4280,4281,4282,4283, -4284,4285,4286,4287,4288,4289,4290,4291,4292,4293,4294,4295,4296,4297,4298, -4299,4300,4301,4302,4303,7312,7313,7314,7315,7316,7317,7318,7319,7320,7321, -7322,7323,7324,7325,7326,7327,7328,7329,7330,7331,7332,7333,7334,7335,7336, -7337,7338,7339,7340,7341,7342,7343,7344,7345,7346,7347,7348,7349,7350,7351, -7352,7353,7354,4347,4348,7357,7358,7359,4352,4353,4354,4355,4356,4357,4358, -4359,4360,4361,4362,4363,4364,4365,4366,4367,4368,4369,4370,4371,4372,4373, -4374,4375,4376,4377,4378,4379,4380,4381,4382,4383,4384,4385,4386,4387,4388, -4389,4390,4391,4392,4393,4394,4395,4396,4397,4398,4399,4400,4401,4402,4403, -4404,4405,4406,4407,4408,4409,4410,4411,4412,4413,4414,4415,4416,4417,4418, -4419,4420,4421,4422,4423,4424,4425,4426,4427,4428,4429,4430,4431,4432,4433, -4434,4435,4436,4437,4438,4439,4440,4441,4442,4443,4444,4445,4446,4447,4448, -4449,4450,4451,4452,4453,4454,4455,4456,4457,4458,4459,4460,4461,4462,4463, -4464,4465,4466,4467,4468,4469,4470,4471,4472,4473,4474,4475,4476,4477,4478, -4479,4480,4481,4482,4483,4484,4485,4486,4487,4488,4489,4490,4491,4492,4493, -4494,4495,4496,4497,4498,4499,4500,4501,4502,4503,4504,4505,4506,4507,4508, -4509,4510,4511,4512,4513,4514,4515,4516,4517,4518,4519,4520,4521,4522,4523, -4524,4525,4526,4527,4528,4529,4530,4531,4532,4533,4534,4535,4536,4537,4538, -4539,4540,4541,4542,4543,4544,4545,4546,4547,4548,4549,4550,4551,4552,4553, -4554,4555,4556,4557,4558,4559,4560,4561,4562,4563,4564,4565,4566,4567,4568, -4569,4570,4571,4572,4573,4574,4575,4576,4577,4578,4579,4580,4581,4582,4583, -4584,4585,4586,4587,4588,4589,4590,4591,4592,4593,4594,4595,4596,4597,4598, -4599,4600,4601,4602,4603,4604,4605,4606,4607,4608,4609,4610,4611,4612,4613, -4614,4615,4616,4617,4618,4619,4620,4621,4622,4623,4624,4625,4626,4627,4628, -4629,4630,4631,4632,4633,4634,4635,4636,4637,4638,4639,4640,4641,4642,4643, -4644,4645,4646,4647,4648,4649,4650,4651,4652,4653,4654,4655,4656,4657,4658, -4659,4660,4661,4662,4663,4664,4665,4666,4667,4668,4669,4670,4671,4672,4673, -4674,4675,4676,4677,4678,4679,4680,4681,4682,4683,4684,4685,4686,4687,4688, -4689,4690,4691,4692,4693,4694,4695,4696,4697,4698,4699,4700,4701,4702,4703, -4704,4705,4706,4707,4708,4709,4710,4711,4712,4713,4714,4715,4716,4717,4718, -4719,4720,4721,4722,4723,4724,4725,4726,4727,4728,4729,4730,4731,4732,4733, -4734,4735,4736,4737,4738,4739,4740,4741,4742,4743,4744,4745,4746,4747,4748, -4749,4750,4751,4752,4753,4754,4755,4756,4757,4758,4759,4760,4761,4762,4763, -4764,4765,4766,4767,4768,4769,4770,4771,4772,4773,4774,4775,4776,4777,4778, -4779,4780,4781,4782,4783,4784,4785,4786,4787,4788,4789,4790,4791,4792,4793, -4794,4795,4796,4797,4798,4799,4800,4801,4802,4803,4804,4805,4806,4807,4808, -4809,4810,4811,4812,4813,4814,4815,4816,4817,4818,4819,4820,4821,4822,4823, -4824,4825,4826,4827,4828,4829,4830,4831,4832,4833,4834,4835,4836,4837,4838, -4839,4840,4841,4842,4843,4844,4845,4846,4847,4848,4849,4850,4851,4852,4853, -4854,4855,4856,4857,4858,4859,4860,4861,4862,4863,4864,4865,4866,4867,4868, -4869,4870,4871,4872,4873,4874,4875,4876,4877,4878,4879,4880,4881,4882,4883, -4884,4885,4886,4887,4888,4889,4890,4891,4892,4893,4894,4895,4896,4897,4898, -4899,4900,4901,4902,4903,4904,4905,4906,4907,4908,4909,4910,4911,4912,4913, -4914,4915,4916,4917,4918,4919,4920,4921,4922,4923,4924,4925,4926,4927,4928, -4929,4930,4931,4932,4933,4934,4935,4936,4937,4938,4939,4940,4941,4942,4943, -4944,4945,4946,4947,4948,4949,4950,4951,4952,4953,4954,4955,4956,4957,4958, -4959,4960,4961,4962,4963,4964,4965,4966,4967,4968,4969,4970,4971,4972,4973, -4974,4975,4976,4977,4978,4979,4980,4981,4982,4983,4984,4985,4986,4987,4988, -4989,4990,4991,4992,4993,4994,4995,4996,4997,4998,4999,5000,5001,5002,5003, -5004,5005,5006,5007,5008,5009,5010,5011,5012,5013,5014,5015,5016,5017,5018, -5019,5020,5021,5022,5023,5024,5025,5026,5027,5028,5029,5030,5031,5032,5033, -5034,5035,5036,5037,5038,5039,5040,5041,5042,5043,5044,5045,5046,5047,5048, -5049,5050,5051,5052,5053,5054,5055,5056,5057,5058,5059,5060,5061,5062,5063, -5064,5065,5066,5067,5068,5069,5070,5071,5072,5073,5074,5075,5076,5077,5078, -5079,5080,5081,5082,5083,5084,5085,5086,5087,5088,5089,5090,5091,5092,5093, -5094,5095,5096,5097,5098,5099,5100,5101,5102,5103,5104,5105,5106,5107,5108, -5109,5110,5111,5104,5105,5106,5107,5108,5109,5118,5119,5120,5121,5122,5123, -5124,5125,5126,5127,5128,5129,5130,5131,5132,5133,5134,5135,5136,5137,5138, -5139,5140,5141,5142,5143,5144,5145,5146,5147,5148,5149,5150,5151,5152,5153, -5154,5155,5156,5157,5158,5159,5160,5161,5162,5163,5164,5165,5166,5167,5168, -5169,5170,5171,5172,5173,5174,5175,5176,5177,5178,5179,5180,5181,5182,5183, -5184,5185,5186,5187,5188,5189,5190,5191,5192,5193,5194,5195,5196,5197,5198, -5199,5200,5201,5202,5203,5204,5205,5206,5207,5208,5209,5210,5211,5212,5213, -5214,5215,5216,5217,5218,5219,5220,5221,5222,5223,5224,5225,5226,5227,5228, -5229,5230,5231,5232,5233,5234,5235,5236,5237,5238,5239,5240,5241,5242,5243, -5244,5245,5246,5247,5248,5249,5250,5251,5252,5253,5254,5255,5256,5257,5258, -5259,5260,5261,5262,5263,5264,5265,5266,5267,5268,5269,5270,5271,5272,5273, -5274,5275,5276,5277,5278,5279,5280,5281,5282,5283,5284,5285,5286,5287,5288, -5289,5290,5291,5292,5293,5294,5295,5296,5297,5298,5299,5300,5301,5302,5303, -5304,5305,5306,5307,5308,5309,5310,5311,5312,5313,5314,5315,5316,5317,5318, -5319,5320,5321,5322,5323,5324,5325,5326,5327,5328,5329,5330,5331,5332,5333, -5334,5335,5336,5337,5338,5339,5340,5341,5342,5343,5344,5345,5346,5347,5348, -5349,5350,5351,5352,5353,5354,5355,5356,5357,5358,5359,5360,5361,5362,5363, -5364,5365,5366,5367,5368,5369,5370,5371,5372,5373,5374,5375,5376,5377,5378, -5379,5380,5381,5382,5383,5384,5385,5386,5387,5388,5389,5390,5391,5392,5393, -5394,5395,5396,5397,5398,5399,5400,5401,5402,5403,5404,5405,5406,5407,5408, -5409,5410,5411,5412,5413,5414,5415,5416,5417,5418,5419,5420,5421,5422,5423, -5424,5425,5426,5427,5428,5429,5430,5431,5432,5433,5434,5435,5436,5437,5438, -5439,5440,5441,5442,5443,5444,5445,5446,5447,5448,5449,5450,5451,5452,5453, -5454,5455,5456,5457,5458,5459,5460,5461,5462,5463,5464,5465,5466,5467,5468, -5469,5470,5471,5472,5473,5474,5475,5476,5477,5478,5479,5480,5481,5482,5483, -5484,5485,5486,5487,5488,5489,5490,5491,5492,5493,5494,5495,5496,5497,5498, -5499,5500,5501,5502,5503,5504,5505,5506,5507,5508,5509,5510,5511,5512,5513, -5514,5515,5516,5517,5518,5519,5520,5521,5522,5523,5524,5525,5526,5527,5528, -5529,5530,5531,5532,5533,5534,5535,5536,5537,5538,5539,5540,5541,5542,5543, -5544,5545,5546,5547,5548,5549,5550,5551,5552,5553,5554,5555,5556,5557,5558, -5559,5560,5561,5562,5563,5564,5565,5566,5567,5568,5569,5570,5571,5572,5573, -5574,5575,5576,5577,5578,5579,5580,5581,5582,5583,5584,5585,5586,5587,5588, -5589,5590,5591,5592,5593,5594,5595,5596,5597,5598,5599,5600,5601,5602,5603, -5604,5605,5606,5607,5608,5609,5610,5611,5612,5613,5614,5615,5616,5617,5618, -5619,5620,5621,5622,5623,5624,5625,5626,5627,5628,5629,5630,5631,5632,5633, -5634,5635,5636,5637,5638,5639,5640,5641,5642,5643,5644,5645,5646,5647,5648, -5649,5650,5651,5652,5653,5654,5655,5656,5657,5658,5659,5660,5661,5662,5663, -5664,5665,5666,5667,5668,5669,5670,5671,5672,5673,5674,5675,5676,5677,5678, -5679,5680,5681,5682,5683,5684,5685,5686,5687,5688,5689,5690,5691,5692,5693, -5694,5695,5696,5697,5698,5699,5700,5701,5702,5703,5704,5705,5706,5707,5708, -5709,5710,5711,5712,5713,5714,5715,5716,5717,5718,5719,5720,5721,5722,5723, -5724,5725,5726,5727,5728,5729,5730,5731,5732,5733,5734,5735,5736,5737,5738, -5739,5740,5741,5742,5743,5744,5745,5746,5747,5748,5749,5750,5751,5752,5753, -5754,5755,5756,5757,5758,5759,5760,5761,5762,5763,5764,5765,5766,5767,5768, -5769,5770,5771,5772,5773,5774,5775,5776,5777,5778,5779,5780,5781,5782,5783, -5784,5785,5786,5787,5788,5789,5790,5791,5792,5793,5794,5795,5796,5797,5798, -5799,5800,5801,5802,5803,5804,5805,5806,5807,5808,5809,5810,5811,5812,5813, -5814,5815,5816,5817,5818,5819,5820,5821,5822,5823,5824,5825,5826,5827,5828, -5829,5830,5831,5832,5833,5834,5835,5836,5837,5838,5839,5840,5841,5842,5843, -5844,5845,5846,5847,5848,5849,5850,5851,5852,5853,5854,5855,5856,5857,5858, -5859,5860,5861,5862,5863,5864,5865,5866,5867,5868,5869,5870,5871,5872,5873, -5874,5875,5876,5877,5878,5879,5880,5881,5882,5883,5884,5885,5886,5887,5888, -5889,5890,5891,5892,5893,5894,5895,5896,5897,5898,5899,5900,5901,5902,5903, -5904,5905,5906,5907,5908,5909,5910,5911,5912,5913,5914,5915,5916,5917,5918, -5919,5920,5921,5922,5923,5924,5925,5926,5927,5928,5929,5930,5931,5932,5933, -5934,5935,5936,5937,5938,5939,5940,5941,5942,5943,5944,5945,5946,5947,5948, -5949,5950,5951,5952,5953,5954,5955,5956,5957,5958,5959,5960,5961,5962,5963, -5964,5965,5966,5967,5968,5969,5970,5971,5972,5973,5974,5975,5976,5977,5978, -5979,5980,5981,5982,5983,5984,5985,5986,5987,5988,5989,5990,5991,5992,5993, -5994,5995,5996,5997,5998,5999,6000,6001,6002,6003,6004,6005,6006,6007,6008, -6009,6010,6011,6012,6013,6014,6015,6016,6017,6018,6019,6020,6021,6022,6023, -6024,6025,6026,6027,6028,6029,6030,6031,6032,6033,6034,6035,6036,6037,6038, -6039,6040,6041,6042,6043,6044,6045,6046,6047,6048,6049,6050,6051,6052,6053, -6054,6055,6056,6057,6058,6059,6060,6061,6062,6063,6064,6065,6066,6067,6068, -6069,6070,6071,6072,6073,6074,6075,6076,6077,6078,6079,6080,6081,6082,6083, -6084,6085,6086,6087,6088,6089,6090,6091,6092,6093,6094,6095,6096,6097,6098, -6099,6100,6101,6102,6103,6104,6105,6106,6107,6108,6109,6110,6111,6112,6113, -6114,6115,6116,6117,6118,6119,6120,6121,6122,6123,6124,6125,6126,6127,6128, -6129,6130,6131,6132,6133,6134,6135,6136,6137,6138,6139,6140,6141,6142,6143, -6144,6145,6146,6147,6148,6149,6150,6151,6152,6153,6154,6155,6156,6157,6158, -6159,6160,6161,6162,6163,6164,6165,6166,6167,6168,6169,6170,6171,6172,6173, -6174,6175,6176,6177,6178,6179,6180,6181,6182,6183,6184,6185,6186,6187,6188, -6189,6190,6191,6192,6193,6194,6195,6196,6197,6198,6199,6200,6201,6202,6203, -6204,6205,6206,6207,6208,6209,6210,6211,6212,6213,6214,6215,6216,6217,6218, -6219,6220,6221,6222,6223,6224,6225,6226,6227,6228,6229,6230,6231,6232,6233, -6234,6235,6236,6237,6238,6239,6240,6241,6242,6243,6244,6245,6246,6247,6248, -6249,6250,6251,6252,6253,6254,6255,6256,6257,6258,6259,6260,6261,6262,6263, -6264,6265,6266,6267,6268,6269,6270,6271,6272,6273,6274,6275,6276,6277,6278, -6279,6280,6281,6282,6283,6284,6285,6286,6287,6288,6289,6290,6291,6292,6293, -6294,6295,6296,6297,6298,6299,6300,6301,6302,6303,6304,6305,6306,6307,6308, -6309,6310,6311,6312,6313,6314,6315,6316,6317,6318,6319,6320,6321,6322,6323, -6324,6325,6326,6327,6328,6329,6330,6331,6332,6333,6334,6335,6336,6337,6338, -6339,6340,6341,6342,6343,6344,6345,6346,6347,6348,6349,6350,6351,6352,6353, -6354,6355,6356,6357,6358,6359,6360,6361,6362,6363,6364,6365,6366,6367,6368, -6369,6370,6371,6372,6373,6374,6375,6376,6377,6378,6379,6380,6381,6382,6383, -6384,6385,6386,6387,6388,6389,6390,6391,6392,6393,6394,6395,6396,6397,6398, -6399,6400,6401,6402,6403,6404,6405,6406,6407,6408,6409,6410,6411,6412,6413, -6414,6415,6416,6417,6418,6419,6420,6421,6422,6423,6424,6425,6426,6427,6428, -6429,6430,6431,6432,6433,6434,6435,6436,6437,6438,6439,6440,6441,6442,6443, -6444,6445,6446,6447,6448,6449,6450,6451,6452,6453,6454,6455,6456,6457,6458, -6459,6460,6461,6462,6463,6464,6465,6466,6467,6468,6469,6470,6471,6472,6473, -6474,6475,6476,6477,6478,6479,6480,6481,6482,6483,6484,6485,6486,6487,6488, -6489,6490,6491,6492,6493,6494,6495,6496,6497,6498,6499,6500,6501,6502,6503, -6504,6505,6506,6507,6508,6509,6510,6511,6512,6513,6514,6515,6516,6517,6518, -6519,6520,6521,6522,6523,6524,6525,6526,6527,6528,6529,6530,6531,6532,6533, -6534,6535,6536,6537,6538,6539,6540,6541,6542,6543,6544,6545,6546,6547,6548, -6549,6550,6551,6552,6553,6554,6555,6556,6557,6558,6559,6560,6561,6562,6563, -6564,6565,6566,6567,6568,6569,6570,6571,6572,6573,6574,6575,6576,6577,6578, -6579,6580,6581,6582,6583,6584,6585,6586,6587,6588,6589,6590,6591,6592,6593, -6594,6595,6596,6597,6598,6599,6600,6601,6602,6603,6604,6605,6606,6607,6608, -6609,6610,6611,6612,6613,6614,6615,6616,6617,6618,6619,6620,6621,6622,6623, -6624,6625,6626,6627,6628,6629,6630,6631,6632,6633,6634,6635,6636,6637,6638, -6639,6640,6641,6642,6643,6644,6645,6646,6647,6648,6649,6650,6651,6652,6653, -6654,6655,6656,6657,6658,6659,6660,6661,6662,6663,6664,6665,6666,6667,6668, -6669,6670,6671,6672,6673,6674,6675,6676,6677,6678,6679,6680,6681,6682,6683, -6684,6685,6686,6687,6688,6689,6690,6691,6692,6693,6694,6695,6696,6697,6698, -6699,6700,6701,6702,6703,6704,6705,6706,6707,6708,6709,6710,6711,6712,6713, -6714,6715,6716,6717,6718,6719,6720,6721,6722,6723,6724,6725,6726,6727,6728, -6729,6730,6731,6732,6733,6734,6735,6736,6737,6738,6739,6740,6741,6742,6743, -6744,6745,6746,6747,6748,6749,6750,6751,6752,6753,6754,6755,6756,6757,6758, -6759,6760,6761,6762,6763,6764,6765,6766,6767,6768,6769,6770,6771,6772,6773, -6774,6775,6776,6777,6778,6779,6780,6781,6782,6783,6784,6785,6786,6787,6788, -6789,6790,6791,6792,6793,6794,6795,6796,6797,6798,6799,6800,6801,6802,6803, -6804,6805,6806,6807,6808,6809,6810,6811,6812,6813,6814,6815,6816,6817,6818, -6819,6820,6821,6822,6823,6824,6825,6826,6827,6828,6829,6830,6831,6832,6833, -6834,6835,6836,6837,6838,6839,6840,6841,6842,6843,6844,6845,6846,6847,6848, -6849,6850,6851,6852,6853,6854,6855,6856,6857,6858,6859,6860,6861,6862,6863, -6864,6865,6866,6867,6868,6869,6870,6871,6872,6873,6874,6875,6876,6877,6878, -6879,6880,6881,6882,6883,6884,6885,6886,6887,6888,6889,6890,6891,6892,6893, -6894,6895,6896,6897,6898,6899,6900,6901,6902,6903,6904,6905,6906,6907,6908, -6909,6910,6911,6912,6913,6914,6915,6916,6917,6918,6919,6920,6921,6922,6923, -6924,6925,6926,6927,6928,6929,6930,6931,6932,6933,6934,6935,6936,6937,6938, -6939,6940,6941,6942,6943,6944,6945,6946,6947,6948,6949,6950,6951,6952,6953, -6954,6955,6956,6957,6958,6959,6960,6961,6962,6963,6964,6965,6966,6967,6968, -6969,6970,6971,6972,6973,6974,6975,6976,6977,6978,6979,6980,6981,6982,6983, -6984,6985,6986,6987,6988,6989,6990,6991,6992,6993,6994,6995,6996,6997,6998, -6999,7000,7001,7002,7003,7004,7005,7006,7007,7008,7009,7010,7011,7012,7013, -7014,7015,7016,7017,7018,7019,7020,7021,7022,7023,7024,7025,7026,7027,7028, -7029,7030,7031,7032,7033,7034,7035,7036,7037,7038,7039,7040,7041,7042,7043, -7044,7045,7046,7047,7048,7049,7050,7051,7052,7053,7054,7055,7056,7057,7058, -7059,7060,7061,7062,7063,7064,7065,7066,7067,7068,7069,7070,7071,7072,7073, -7074,7075,7076,7077,7078,7079,7080,7081,7082,7083,7084,7085,7086,7087,7088, -7089,7090,7091,7092,7093,7094,7095,7096,7097,7098,7099,7100,7101,7102,7103, -7104,7105,7106,7107,7108,7109,7110,7111,7112,7113,7114,7115,7116,7117,7118, -7119,7120,7121,7122,7123,7124,7125,7126,7127,7128,7129,7130,7131,7132,7133, -7134,7135,7136,7137,7138,7139,7140,7141,7142,7143,7144,7145,7146,7147,7148, -7149,7150,7151,7152,7153,7154,7155,7156,7157,7158,7159,7160,7161,7162,7163, -7164,7165,7166,7167,7168,7169,7170,7171,7172,7173,7174,7175,7176,7177,7178, -7179,7180,7181,7182,7183,7184,7185,7186,7187,7188,7189,7190,7191,7192,7193, -7194,7195,7196,7197,7198,7199,7200,7201,7202,7203,7204,7205,7206,7207,7208, -7209,7210,7211,7212,7213,7214,7215,7216,7217,7218,7219,7220,7221,7222,7223, -7224,7225,7226,7227,7228,7229,7230,7231,7232,7233,7234,7235,7236,7237,7238, -7239,7240,7241,7242,7243,7244,7245,7246,7247,7248,7249,7250,7251,7252,7253, -7254,7255,7256,7257,7258,7259,7260,7261,7262,7263,7264,7265,7266,7267,7268, -7269,7270,7271,7272,7273,7274,7275,7276,7277,7278,7279,7280,7281,7282,7283, -7284,7285,7286,7287,7288,7289,7290,7291,7292,7293,7294,7295,1042,1044,1054, -1057,1058,1058,1066,1122,42570L,7305,7306,7307,7308,7309,7310,7311,7312, -7313,7314,7315,7316,7317,7318,7319,7320,7321,7322,7323,7324,7325,7326,7327, -7328,7329,7330,7331,7332,7333,7334,7335,7336,7337,7338,7339,7340,7341,7342, -7343,7344,7345,7346,7347,7348,7349,7350,7351,7352,7353,7354,7355,7356,7357, -7358,7359,7360,7361,7362,7363,7364,7365,7366,7367,7368,7369,7370,7371,7372, -7373,7374,7375,7376,7377,7378,7379,7380,7381,7382,7383,7384,7385,7386,7387, -7388,7389,7390,7391,7392,7393,7394,7395,7396,7397,7398,7399,7400,7401,7402, -7403,7404,7405,7406,7407,7408,7409,7410,7411,7412,7413,7414,7415,7416,7417, -7418,7419,7420,7421,7422,7423,7424,7425,7426,7427,7428,7429,7430,7431,7432, -7433,7434,7435,7436,7437,7438,7439,7440,7441,7442,7443,7444,7445,7446,7447, -7448,7449,7450,7451,7452,7453,7454,7455,7456,7457,7458,7459,7460,7461,7462, -7463,7464,7465,7466,7467,7468,7469,7470,7471,7472,7473,7474,7475,7476,7477, -7478,7479,7480,7481,7482,7483,7484,7485,7486,7487,7488,7489,7490,7491,7492, -7493,7494,7495,7496,7497,7498,7499,7500,7501,7502,7503,7504,7505,7506,7507, -7508,7509,7510,7511,7512,7513,7514,7515,7516,7517,7518,7519,7520,7521,7522, -7523,7524,7525,7526,7527,7528,7529,7530,7531,7532,7533,7534,7535,7536,7537, -7538,7539,7540,7541,7542,7543,7544,42877L,7546,7547,7548,11363,7550,7551, -7552,7553,7554,7555,7556,7557,7558,7559,7560,7561,7562,7563,7564,7565, -42950L,7567,7568,7569,7570,7571,7572,7573,7574,7575,7576,7577,7578,7579, -7580,7581,7582,7583,7584,7585,7586,7587,7588,7589,7590,7591,7592,7593,7594, -7595,7596,7597,7598,7599,7600,7601,7602,7603,7604,7605,7606,7607,7608,7609, -7610,7611,7612,7613,7614,7615,7616,7617,7618,7619,7620,7621,7622,7623,7624, -7625,7626,7627,7628,7629,7630,7631,7632,7633,7634,7635,7636,7637,7638,7639, -7640,7641,7642,7643,7644,7645,7646,7647,7648,7649,7650,7651,7652,7653,7654, -7655,7656,7657,7658,7659,7660,7661,7662,7663,7664,7665,7666,7667,7668,7669, -7670,7671,7672,7673,7674,7675,7676,7677,7678,7679,7680,7680,7682,7682,7684, -7684,7686,7686,7688,7688,7690,7690,7692,7692,7694,7694,7696,7696,7698,7698, -7700,7700,7702,7702,7704,7704,7706,7706,7708,7708,7710,7710,7712,7712,7714, -7714,7716,7716,7718,7718,7720,7720,7722,7722,7724,7724,7726,7726,7728,7728, -7730,7730,7732,7732,7734,7734,7736,7736,7738,7738,7740,7740,7742,7742,7744, -7744,7746,7746,7748,7748,7750,7750,7752,7752,7754,7754,7756,7756,7758,7758, -7760,7760,7762,7762,7764,7764,7766,7766,7768,7768,7770,7770,7772,7772,7774, -7774,7776,7776,7778,7778,7780,7780,7782,7782,7784,7784,7786,7786,7788,7788, -7790,7790,7792,7792,7794,7794,7796,7796,7798,7798,7800,7800,7802,7802,7804, -7804,7806,7806,7808,7808,7810,7810,7812,7812,7814,7814,7816,7816,7818,7818, -7820,7820,7822,7822,7824,7824,7826,7826,7828,7828,7830,7831,7832,7833,7834, -7776,7836,7837,7838,7839,7840,7840,7842,7842,7844,7844,7846,7846,7848,7848, -7850,7850,7852,7852,7854,7854,7856,7856,7858,7858,7860,7860,7862,7862,7864, -7864,7866,7866,7868,7868,7870,7870,7872,7872,7874,7874,7876,7876,7878,7878, -7880,7880,7882,7882,7884,7884,7886,7886,7888,7888,7890,7890,7892,7892,7894, -7894,7896,7896,7898,7898,7900,7900,7902,7902,7904,7904,7906,7906,7908,7908, -7910,7910,7912,7912,7914,7914,7916,7916,7918,7918,7920,7920,7922,7922,7924, -7924,7926,7926,7928,7928,7930,7930,7932,7932,7934,7934,7944,7945,7946,7947, -7948,7949,7950,7951,7944,7945,7946,7947,7948,7949,7950,7951,7960,7961,7962, -7963,7964,7965,7958,7959,7960,7961,7962,7963,7964,7965,7966,7967,7976,7977, -7978,7979,7980,7981,7982,7983,7976,7977,7978,7979,7980,7981,7982,7983,7992, -7993,7994,7995,7996,7997,7998,7999,7992,7993,7994,7995,7996,7997,7998,7999, -8008,8009,8010,8011,8012,8013,8006,8007,8008,8009,8010,8011,8012,8013,8014, -8015,8016,8025,8018,8027,8020,8029,8022,8031,8024,8025,8026,8027,8028,8029, -8030,8031,8040,8041,8042,8043,8044,8045,8046,8047,8040,8041,8042,8043,8044, -8045,8046,8047,8122,8123,8136,8137,8138,8139,8154,8155,8184,8185,8170,8171, -8186,8187,8062,8063,8064,8065,8066,8067,8068,8069,8070,8071,8072,8073,8074, -8075,8076,8077,8078,8079,8080,8081,8082,8083,8084,8085,8086,8087,8088,8089, -8090,8091,8092,8093,8094,8095,8096,8097,8098,8099,8100,8101,8102,8103,8104, -8105,8106,8107,8108,8109,8110,8111,8120,8121,8114,8115,8116,8117,8118,8119, -8120,8121,8122,8123,8124,8125,921,8127,8128,8129,8130,8131,8132,8133,8134, -8135,8136,8137,8138,8139,8140,8141,8142,8143,8152,8153,8146,8147,8148,8149, -8150,8151,8152,8153,8154,8155,8156,8157,8158,8159,8168,8169,8162,8163,8164, -8172,8166,8167,8168,8169,8170,8171,8172,8173,8174,8175,8176,8177,8178,8179, -8180,8181,8182,8183,8184,8185,8186,8187,8188,8189,8190,8191,8192,8193,8194, -8195,8196,8197,8198,8199,8200,8201,8202,8203,8204,8205,8206,8207,8208,8209, -8210,8211,8212,8213,8214,8215,8216,8217,8218,8219,8220,8221,8222,8223,8224, -8225,8226,8227,8228,8229,8230,8231,8232,8233,8234,8235,8236,8237,8238,8239, -8240,8241,8242,8243,8244,8245,8246,8247,8248,8249,8250,8251,8252,8253,8254, -8255,8256,8257,8258,8259,8260,8261,8262,8263,8264,8265,8266,8267,8268,8269, -8270,8271,8272,8273,8274,8275,8276,8277,8278,8279,8280,8281,8282,8283,8284, -8285,8286,8287,8288,8289,8290,8291,8292,8293,8294,8295,8296,8297,8298,8299, -8300,8301,8302,8303,8304,8305,8306,8307,8308,8309,8310,8311,8312,8313,8314, -8315,8316,8317,8318,8319,8320,8321,8322,8323,8324,8325,8326,8327,8328,8329, -8330,8331,8332,8333,8334,8335,8336,8337,8338,8339,8340,8341,8342,8343,8344, -8345,8346,8347,8348,8349,8350,8351,8352,8353,8354,8355,8356,8357,8358,8359, -8360,8361,8362,8363,8364,8365,8366,8367,8368,8369,8370,8371,8372,8373,8374, -8375,8376,8377,8378,8379,8380,8381,8382,8383,8384,8385,8386,8387,8388,8389, -8390,8391,8392,8393,8394,8395,8396,8397,8398,8399,8400,8401,8402,8403,8404, -8405,8406,8407,8408,8409,8410,8411,8412,8413,8414,8415,8416,8417,8418,8419, -8420,8421,8422,8423,8424,8425,8426,8427,8428,8429,8430,8431,8432,8433,8434, -8435,8436,8437,8438,8439,8440,8441,8442,8443,8444,8445,8446,8447,8448,8449, -8450,8451,8452,8453,8454,8455,8456,8457,8458,8459,8460,8461,8462,8463,8464, -8465,8466,8467,8468,8469,8470,8471,8472,8473,8474,8475,8476,8477,8478,8479, -8480,8481,8482,8483,8484,8485,8486,8487,8488,8489,8490,8491,8492,8493,8494, -8495,8496,8497,8498,8499,8500,8501,8502,8503,8504,8505,8506,8507,8508,8509, -8510,8511,8512,8513,8514,8515,8516,8517,8518,8519,8520,8521,8522,8523,8524, -8525,8498,8527,8528,8529,8530,8531,8532,8533,8534,8535,8536,8537,8538,8539, -8540,8541,8542,8543,8544,8545,8546,8547,8548,8549,8550,8551,8552,8553,8554, -8555,8556,8557,8558,8559,8544,8545,8546,8547,8548,8549,8550,8551,8552,8553, -8554,8555,8556,8557,8558,8559,8576,8577,8578,8579,8579,8581,8582,8583,8584, -8585,8586,8587,8588,8589,8590,8591,8592,8593,8594,8595,8596,8597,8598,8599, -8600,8601,8602,8603,8604,8605,8606,8607,8608,8609,8610,8611,8612,8613,8614, -8615,8616,8617,8618,8619,8620,8621,8622,8623,8624,8625,8626,8627,8628,8629, -8630,8631,8632,8633,8634,8635,8636,8637,8638,8639,8640,8641,8642,8643,8644, -8645,8646,8647,8648,8649,8650,8651,8652,8653,8654,8655,8656,8657,8658,8659, -8660,8661,8662,8663,8664,8665,8666,8667,8668,8669,8670,8671,8672,8673,8674, -8675,8676,8677,8678,8679,8680,8681,8682,8683,8684,8685,8686,8687,8688,8689, -8690,8691,8692,8693,8694,8695,8696,8697,8698,8699,8700,8701,8702,8703,8704, -8705,8706,8707,8708,8709,8710,8711,8712,8713,8714,8715,8716,8717,8718,8719, -8720,8721,8722,8723,8724,8725,8726,8727,8728,8729,8730,8731,8732,8733,8734, -8735,8736,8737,8738,8739,8740,8741,8742,8743,8744,8745,8746,8747,8748,8749, -8750,8751,8752,8753,8754,8755,8756,8757,8758,8759,8760,8761,8762,8763,8764, -8765,8766,8767,8768,8769,8770,8771,8772,8773,8774,8775,8776,8777,8778,8779, -8780,8781,8782,8783,8784,8785,8786,8787,8788,8789,8790,8791,8792,8793,8794, -8795,8796,8797,8798,8799,8800,8801,8802,8803,8804,8805,8806,8807,8808,8809, -8810,8811,8812,8813,8814,8815,8816,8817,8818,8819,8820,8821,8822,8823,8824, -8825,8826,8827,8828,8829,8830,8831,8832,8833,8834,8835,8836,8837,8838,8839, -8840,8841,8842,8843,8844,8845,8846,8847,8848,8849,8850,8851,8852,8853,8854, -8855,8856,8857,8858,8859,8860,8861,8862,8863,8864,8865,8866,8867,8868,8869, -8870,8871,8872,8873,8874,8875,8876,8877,8878,8879,8880,8881,8882,8883,8884, -8885,8886,8887,8888,8889,8890,8891,8892,8893,8894,8895,8896,8897,8898,8899, -8900,8901,8902,8903,8904,8905,8906,8907,8908,8909,8910,8911,8912,8913,8914, -8915,8916,8917,8918,8919,8920,8921,8922,8923,8924,8925,8926,8927,8928,8929, -8930,8931,8932,8933,8934,8935,8936,8937,8938,8939,8940,8941,8942,8943,8944, -8945,8946,8947,8948,8949,8950,8951,8952,8953,8954,8955,8956,8957,8958,8959, -8960,8961,8962,8963,8964,8965,8966,8967,8968,8969,8970,8971,8972,8973,8974, -8975,8976,8977,8978,8979,8980,8981,8982,8983,8984,8985,8986,8987,8988,8989, -8990,8991,8992,8993,8994,8995,8996,8997,8998,8999,9000,9001,9002,9003,9004, -9005,9006,9007,9008,9009,9010,9011,9012,9013,9014,9015,9016,9017,9018,9019, -9020,9021,9022,9023,9024,9025,9026,9027,9028,9029,9030,9031,9032,9033,9034, -9035,9036,9037,9038,9039,9040,9041,9042,9043,9044,9045,9046,9047,9048,9049, -9050,9051,9052,9053,9054,9055,9056,9057,9058,9059,9060,9061,9062,9063,9064, -9065,9066,9067,9068,9069,9070,9071,9072,9073,9074,9075,9076,9077,9078,9079, -9080,9081,9082,9083,9084,9085,9086,9087,9088,9089,9090,9091,9092,9093,9094, -9095,9096,9097,9098,9099,9100,9101,9102,9103,9104,9105,9106,9107,9108,9109, -9110,9111,9112,9113,9114,9115,9116,9117,9118,9119,9120,9121,9122,9123,9124, -9125,9126,9127,9128,9129,9130,9131,9132,9133,9134,9135,9136,9137,9138,9139, -9140,9141,9142,9143,9144,9145,9146,9147,9148,9149,9150,9151,9152,9153,9154, -9155,9156,9157,9158,9159,9160,9161,9162,9163,9164,9165,9166,9167,9168,9169, -9170,9171,9172,9173,9174,9175,9176,9177,9178,9179,9180,9181,9182,9183,9184, -9185,9186,9187,9188,9189,9190,9191,9192,9193,9194,9195,9196,9197,9198,9199, -9200,9201,9202,9203,9204,9205,9206,9207,9208,9209,9210,9211,9212,9213,9214, -9215,9216,9217,9218,9219,9220,9221,9222,9223,9224,9225,9226,9227,9228,9229, -9230,9231,9232,9233,9234,9235,9236,9237,9238,9239,9240,9241,9242,9243,9244, -9245,9246,9247,9248,9249,9250,9251,9252,9253,9254,9255,9256,9257,9258,9259, -9260,9261,9262,9263,9264,9265,9266,9267,9268,9269,9270,9271,9272,9273,9274, -9275,9276,9277,9278,9279,9280,9281,9282,9283,9284,9285,9286,9287,9288,9289, -9290,9291,9292,9293,9294,9295,9296,9297,9298,9299,9300,9301,9302,9303,9304, -9305,9306,9307,9308,9309,9310,9311,9312,9313,9314,9315,9316,9317,9318,9319, -9320,9321,9322,9323,9324,9325,9326,9327,9328,9329,9330,9331,9332,9333,9334, -9335,9336,9337,9338,9339,9340,9341,9342,9343,9344,9345,9346,9347,9348,9349, -9350,9351,9352,9353,9354,9355,9356,9357,9358,9359,9360,9361,9362,9363,9364, -9365,9366,9367,9368,9369,9370,9371,9372,9373,9374,9375,9376,9377,9378,9379, -9380,9381,9382,9383,9384,9385,9386,9387,9388,9389,9390,9391,9392,9393,9394, -9395,9396,9397,9398,9399,9400,9401,9402,9403,9404,9405,9406,9407,9408,9409, -9410,9411,9412,9413,9414,9415,9416,9417,9418,9419,9420,9421,9422,9423,9398, -9399,9400,9401,9402,9403,9404,9405,9406,9407,9408,9409,9410,9411,9412,9413, -9414,9415,9416,9417,9418,9419,9420,9421,9422,9423,9450,9451,9452,9453,9454, -9455,9456,9457,9458,9459,9460,9461,9462,9463,9464,9465,9466,9467,9468,9469, -9470,9471,9472,9473,9474,9475,9476,9477,9478,9479,9480,9481,9482,9483,9484, -9485,9486,9487,9488,9489,9490,9491,9492,9493,9494,9495,9496,9497,9498,9499, -9500,9501,9502,9503,9504,9505,9506,9507,9508,9509,9510,9511,9512,9513,9514, -9515,9516,9517,9518,9519,9520,9521,9522,9523,9524,9525,9526,9527,9528,9529, -9530,9531,9532,9533,9534,9535,9536,9537,9538,9539,9540,9541,9542,9543,9544, -9545,9546,9547,9548,9549,9550,9551,9552,9553,9554,9555,9556,9557,9558,9559, -9560,9561,9562,9563,9564,9565,9566,9567,9568,9569,9570,9571,9572,9573,9574, -9575,9576,9577,9578,9579,9580,9581,9582,9583,9584,9585,9586,9587,9588,9589, -9590,9591,9592,9593,9594,9595,9596,9597,9598,9599,9600,9601,9602,9603,9604, -9605,9606,9607,9608,9609,9610,9611,9612,9613,9614,9615,9616,9617,9618,9619, -9620,9621,9622,9623,9624,9625,9626,9627,9628,9629,9630,9631,9632,9633,9634, -9635,9636,9637,9638,9639,9640,9641,9642,9643,9644,9645,9646,9647,9648,9649, -9650,9651,9652,9653,9654,9655,9656,9657,9658,9659,9660,9661,9662,9663,9664, -9665,9666,9667,9668,9669,9670,9671,9672,9673,9674,9675,9676,9677,9678,9679, -9680,9681,9682,9683,9684,9685,9686,9687,9688,9689,9690,9691,9692,9693,9694, -9695,9696,9697,9698,9699,9700,9701,9702,9703,9704,9705,9706,9707,9708,9709, -9710,9711,9712,9713,9714,9715,9716,9717,9718,9719,9720,9721,9722,9723,9724, -9725,9726,9727,9728,9729,9730,9731,9732,9733,9734,9735,9736,9737,9738,9739, -9740,9741,9742,9743,9744,9745,9746,9747,9748,9749,9750,9751,9752,9753,9754, -9755,9756,9757,9758,9759,9760,9761,9762,9763,9764,9765,9766,9767,9768,9769, -9770,9771,9772,9773,9774,9775,9776,9777,9778,9779,9780,9781,9782,9783,9784, -9785,9786,9787,9788,9789,9790,9791,9792,9793,9794,9795,9796,9797,9798,9799, -9800,9801,9802,9803,9804,9805,9806,9807,9808,9809,9810,9811,9812,9813,9814, -9815,9816,9817,9818,9819,9820,9821,9822,9823,9824,9825,9826,9827,9828,9829, -9830,9831,9832,9833,9834,9835,9836,9837,9838,9839,9840,9841,9842,9843,9844, -9845,9846,9847,9848,9849,9850,9851,9852,9853,9854,9855,9856,9857,9858,9859, -9860,9861,9862,9863,9864,9865,9866,9867,9868,9869,9870,9871,9872,9873,9874, -9875,9876,9877,9878,9879,9880,9881,9882,9883,9884,9885,9886,9887,9888,9889, -9890,9891,9892,9893,9894,9895,9896,9897,9898,9899,9900,9901,9902,9903,9904, -9905,9906,9907,9908,9909,9910,9911,9912,9913,9914,9915,9916,9917,9918,9919, -9920,9921,9922,9923,9924,9925,9926,9927,9928,9929,9930,9931,9932,9933,9934, -9935,9936,9937,9938,9939,9940,9941,9942,9943,9944,9945,9946,9947,9948,9949, -9950,9951,9952,9953,9954,9955,9956,9957,9958,9959,9960,9961,9962,9963,9964, -9965,9966,9967,9968,9969,9970,9971,9972,9973,9974,9975,9976,9977,9978,9979, -9980,9981,9982,9983,9984,9985,9986,9987,9988,9989,9990,9991,9992,9993,9994, -9995,9996,9997,9998,9999,10000,10001,10002,10003,10004,10005,10006,10007, -10008,10009,10010,10011,10012,10013,10014,10015,10016,10017,10018,10019, -10020,10021,10022,10023,10024,10025,10026,10027,10028,10029,10030,10031, -10032,10033,10034,10035,10036,10037,10038,10039,10040,10041,10042,10043, -10044,10045,10046,10047,10048,10049,10050,10051,10052,10053,10054,10055, -10056,10057,10058,10059,10060,10061,10062,10063,10064,10065,10066,10067, -10068,10069,10070,10071,10072,10073,10074,10075,10076,10077,10078,10079, -10080,10081,10082,10083,10084,10085,10086,10087,10088,10089,10090,10091, -10092,10093,10094,10095,10096,10097,10098,10099,10100,10101,10102,10103, -10104,10105,10106,10107,10108,10109,10110,10111,10112,10113,10114,10115, -10116,10117,10118,10119,10120,10121,10122,10123,10124,10125,10126,10127, -10128,10129,10130,10131,10132,10133,10134,10135,10136,10137,10138,10139, -10140,10141,10142,10143,10144,10145,10146,10147,10148,10149,10150,10151, -10152,10153,10154,10155,10156,10157,10158,10159,10160,10161,10162,10163, -10164,10165,10166,10167,10168,10169,10170,10171,10172,10173,10174,10175, -10176,10177,10178,10179,10180,10181,10182,10183,10184,10185,10186,10187, -10188,10189,10190,10191,10192,10193,10194,10195,10196,10197,10198,10199, -10200,10201,10202,10203,10204,10205,10206,10207,10208,10209,10210,10211, -10212,10213,10214,10215,10216,10217,10218,10219,10220,10221,10222,10223, -10224,10225,10226,10227,10228,10229,10230,10231,10232,10233,10234,10235, -10236,10237,10238,10239,10240,10241,10242,10243,10244,10245,10246,10247, -10248,10249,10250,10251,10252,10253,10254,10255,10256,10257,10258,10259, -10260,10261,10262,10263,10264,10265,10266,10267,10268,10269,10270,10271, -10272,10273,10274,10275,10276,10277,10278,10279,10280,10281,10282,10283, -10284,10285,10286,10287,10288,10289,10290,10291,10292,10293,10294,10295, -10296,10297,10298,10299,10300,10301,10302,10303,10304,10305,10306,10307, -10308,10309,10310,10311,10312,10313,10314,10315,10316,10317,10318,10319, -10320,10321,10322,10323,10324,10325,10326,10327,10328,10329,10330,10331, -10332,10333,10334,10335,10336,10337,10338,10339,10340,10341,10342,10343, -10344,10345,10346,10347,10348,10349,10350,10351,10352,10353,10354,10355, -10356,10357,10358,10359,10360,10361,10362,10363,10364,10365,10366,10367, -10368,10369,10370,10371,10372,10373,10374,10375,10376,10377,10378,10379, -10380,10381,10382,10383,10384,10385,10386,10387,10388,10389,10390,10391, -10392,10393,10394,10395,10396,10397,10398,10399,10400,10401,10402,10403, -10404,10405,10406,10407,10408,10409,10410,10411,10412,10413,10414,10415, -10416,10417,10418,10419,10420,10421,10422,10423,10424,10425,10426,10427, -10428,10429,10430,10431,10432,10433,10434,10435,10436,10437,10438,10439, -10440,10441,10442,10443,10444,10445,10446,10447,10448,10449,10450,10451, -10452,10453,10454,10455,10456,10457,10458,10459,10460,10461,10462,10463, -10464,10465,10466,10467,10468,10469,10470,10471,10472,10473,10474,10475, -10476,10477,10478,10479,10480,10481,10482,10483,10484,10485,10486,10487, -10488,10489,10490,10491,10492,10493,10494,10495,10496,10497,10498,10499, -10500,10501,10502,10503,10504,10505,10506,10507,10508,10509,10510,10511, -10512,10513,10514,10515,10516,10517,10518,10519,10520,10521,10522,10523, -10524,10525,10526,10527,10528,10529,10530,10531,10532,10533,10534,10535, -10536,10537,10538,10539,10540,10541,10542,10543,10544,10545,10546,10547, -10548,10549,10550,10551,10552,10553,10554,10555,10556,10557,10558,10559, -10560,10561,10562,10563,10564,10565,10566,10567,10568,10569,10570,10571, -10572,10573,10574,10575,10576,10577,10578,10579,10580,10581,10582,10583, -10584,10585,10586,10587,10588,10589,10590,10591,10592,10593,10594,10595, -10596,10597,10598,10599,10600,10601,10602,10603,10604,10605,10606,10607, -10608,10609,10610,10611,10612,10613,10614,10615,10616,10617,10618,10619, -10620,10621,10622,10623,10624,10625,10626,10627,10628,10629,10630,10631, -10632,10633,10634,10635,10636,10637,10638,10639,10640,10641,10642,10643, -10644,10645,10646,10647,10648,10649,10650,10651,10652,10653,10654,10655, -10656,10657,10658,10659,10660,10661,10662,10663,10664,10665,10666,10667, -10668,10669,10670,10671,10672,10673,10674,10675,10676,10677,10678,10679, -10680,10681,10682,10683,10684,10685,10686,10687,10688,10689,10690,10691, -10692,10693,10694,10695,10696,10697,10698,10699,10700,10701,10702,10703, -10704,10705,10706,10707,10708,10709,10710,10711,10712,10713,10714,10715, -10716,10717,10718,10719,10720,10721,10722,10723,10724,10725,10726,10727, -10728,10729,10730,10731,10732,10733,10734,10735,10736,10737,10738,10739, -10740,10741,10742,10743,10744,10745,10746,10747,10748,10749,10750,10751, -10752,10753,10754,10755,10756,10757,10758,10759,10760,10761,10762,10763, -10764,10765,10766,10767,10768,10769,10770,10771,10772,10773,10774,10775, -10776,10777,10778,10779,10780,10781,10782,10783,10784,10785,10786,10787, -10788,10789,10790,10791,10792,10793,10794,10795,10796,10797,10798,10799, -10800,10801,10802,10803,10804,10805,10806,10807,10808,10809,10810,10811, -10812,10813,10814,10815,10816,10817,10818,10819,10820,10821,10822,10823, -10824,10825,10826,10827,10828,10829,10830,10831,10832,10833,10834,10835, -10836,10837,10838,10839,10840,10841,10842,10843,10844,10845,10846,10847, -10848,10849,10850,10851,10852,10853,10854,10855,10856,10857,10858,10859, -10860,10861,10862,10863,10864,10865,10866,10867,10868,10869,10870,10871, -10872,10873,10874,10875,10876,10877,10878,10879,10880,10881,10882,10883, -10884,10885,10886,10887,10888,10889,10890,10891,10892,10893,10894,10895, -10896,10897,10898,10899,10900,10901,10902,10903,10904,10905,10906,10907, -10908,10909,10910,10911,10912,10913,10914,10915,10916,10917,10918,10919, -10920,10921,10922,10923,10924,10925,10926,10927,10928,10929,10930,10931, -10932,10933,10934,10935,10936,10937,10938,10939,10940,10941,10942,10943, -10944,10945,10946,10947,10948,10949,10950,10951,10952,10953,10954,10955, -10956,10957,10958,10959,10960,10961,10962,10963,10964,10965,10966,10967, -10968,10969,10970,10971,10972,10973,10974,10975,10976,10977,10978,10979, -10980,10981,10982,10983,10984,10985,10986,10987,10988,10989,10990,10991, -10992,10993,10994,10995,10996,10997,10998,10999,11000,11001,11002,11003, -11004,11005,11006,11007,11008,11009,11010,11011,11012,11013,11014,11015, -11016,11017,11018,11019,11020,11021,11022,11023,11024,11025,11026,11027, -11028,11029,11030,11031,11032,11033,11034,11035,11036,11037,11038,11039, -11040,11041,11042,11043,11044,11045,11046,11047,11048,11049,11050,11051, -11052,11053,11054,11055,11056,11057,11058,11059,11060,11061,11062,11063, -11064,11065,11066,11067,11068,11069,11070,11071,11072,11073,11074,11075, -11076,11077,11078,11079,11080,11081,11082,11083,11084,11085,11086,11087, -11088,11089,11090,11091,11092,11093,11094,11095,11096,11097,11098,11099, -11100,11101,11102,11103,11104,11105,11106,11107,11108,11109,11110,11111, -11112,11113,11114,11115,11116,11117,11118,11119,11120,11121,11122,11123, -11124,11125,11126,11127,11128,11129,11130,11131,11132,11133,11134,11135, -11136,11137,11138,11139,11140,11141,11142,11143,11144,11145,11146,11147, -11148,11149,11150,11151,11152,11153,11154,11155,11156,11157,11158,11159, -11160,11161,11162,11163,11164,11165,11166,11167,11168,11169,11170,11171, -11172,11173,11174,11175,11176,11177,11178,11179,11180,11181,11182,11183, -11184,11185,11186,11187,11188,11189,11190,11191,11192,11193,11194,11195, -11196,11197,11198,11199,11200,11201,11202,11203,11204,11205,11206,11207, -11208,11209,11210,11211,11212,11213,11214,11215,11216,11217,11218,11219, -11220,11221,11222,11223,11224,11225,11226,11227,11228,11229,11230,11231, -11232,11233,11234,11235,11236,11237,11238,11239,11240,11241,11242,11243, -11244,11245,11246,11247,11248,11249,11250,11251,11252,11253,11254,11255, -11256,11257,11258,11259,11260,11261,11262,11263,11264,11265,11266,11267, -11268,11269,11270,11271,11272,11273,11274,11275,11276,11277,11278,11279, -11280,11281,11282,11283,11284,11285,11286,11287,11288,11289,11290,11291, -11292,11293,11294,11295,11296,11297,11298,11299,11300,11301,11302,11303, -11304,11305,11306,11307,11308,11309,11310,11311,11264,11265,11266,11267, -11268,11269,11270,11271,11272,11273,11274,11275,11276,11277,11278,11279, -11280,11281,11282,11283,11284,11285,11286,11287,11288,11289,11290,11291, -11292,11293,11294,11295,11296,11297,11298,11299,11300,11301,11302,11303, -11304,11305,11306,11307,11308,11309,11310,11359,11360,11360,11362,11363, -11364,570,574,11367,11367,11369,11369,11371,11371,11373,11374,11375,11376, -11377,11378,11378,11380,11381,11381,11383,11384,11385,11386,11387,11388, -11389,11390,11391,11392,11392,11394,11394,11396,11396,11398,11398,11400, -11400,11402,11402,11404,11404,11406,11406,11408,11408,11410,11410,11412, -11412,11414,11414,11416,11416,11418,11418,11420,11420,11422,11422,11424, -11424,11426,11426,11428,11428,11430,11430,11432,11432,11434,11434,11436, -11436,11438,11438,11440,11440,11442,11442,11444,11444,11446,11446,11448, -11448,11450,11450,11452,11452,11454,11454,11456,11456,11458,11458,11460, -11460,11462,11462,11464,11464,11466,11466,11468,11468,11470,11470,11472, -11472,11474,11474,11476,11476,11478,11478,11480,11480,11482,11482,11484, -11484,11486,11486,11488,11488,11490,11490,11492,11493,11494,11495,11496, -11497,11498,11499,11499,11501,11501,11503,11504,11505,11506,11506,11508, -11509,11510,11511,11512,11513,11514,11515,11516,11517,11518,11519,4256, -4257,4258,4259,4260,4261,4262,4263,4264,4265,4266,4267,4268,4269,4270,4271, -4272,4273,4274,4275,4276,4277,4278,4279,4280,4281,4282,4283,4284,4285,4286, -4287,4288,4289,4290,4291,4292,4293,11558,4295,11560,11561,11562,11563, -11564,4301,11566,11567,11568,11569,11570,11571,11572,11573,11574,11575, -11576,11577,11578,11579,11580,11581,11582,11583,11584,11585,11586,11587, -11588,11589,11590,11591,11592,11593,11594,11595,11596,11597,11598,11599, -11600,11601,11602,11603,11604,11605,11606,11607,11608,11609,11610,11611, -11612,11613,11614,11615,11616,11617,11618,11619,11620,11621,11622,11623, -11624,11625,11626,11627,11628,11629,11630,11631,11632,11633,11634,11635, -11636,11637,11638,11639,11640,11641,11642,11643,11644,11645,11646,11647, -11648,11649,11650,11651,11652,11653,11654,11655,11656,11657,11658,11659, -11660,11661,11662,11663,11664,11665,11666,11667,11668,11669,11670,11671, -11672,11673,11674,11675,11676,11677,11678,11679,11680,11681,11682,11683, -11684,11685,11686,11687,11688,11689,11690,11691,11692,11693,11694,11695, -11696,11697,11698,11699,11700,11701,11702,11703,11704,11705,11706,11707, -11708,11709,11710,11711,11712,11713,11714,11715,11716,11717,11718,11719, -11720,11721,11722,11723,11724,11725,11726,11727,11728,11729,11730,11731, -11732,11733,11734,11735,11736,11737,11738,11739,11740,11741,11742,11743, -11744,11745,11746,11747,11748,11749,11750,11751,11752,11753,11754,11755, -11756,11757,11758,11759,11760,11761,11762,11763,11764,11765,11766,11767, -11768,11769,11770,11771,11772,11773,11774,11775,11776,11777,11778,11779, -11780,11781,11782,11783,11784,11785,11786,11787,11788,11789,11790,11791, -11792,11793,11794,11795,11796,11797,11798,11799,11800,11801,11802,11803, -11804,11805,11806,11807,11808,11809,11810,11811,11812,11813,11814,11815, -11816,11817,11818,11819,11820,11821,11822,11823,11824,11825,11826,11827, -11828,11829,11830,11831,11832,11833,11834,11835,11836,11837,11838,11839, -11840,11841,11842,11843,11844,11845,11846,11847,11848,11849,11850,11851, -11852,11853,11854,11855,11856,11857,11858,11859,11860,11861,11862,11863, -11864,11865,11866,11867,11868,11869,11870,11871,11872,11873,11874,11875, -11876,11877,11878,11879,11880,11881,11882,11883,11884,11885,11886,11887, -11888,11889,11890,11891,11892,11893,11894,11895,11896,11897,11898,11899, -11900,11901,11902,11903,11904,11905,11906,11907,11908,11909,11910,11911, -11912,11913,11914,11915,11916,11917,11918,11919,11920,11921,11922,11923, -11924,11925,11926,11927,11928,11929,11930,11931,11932,11933,11934,11935, -11936,11937,11938,11939,11940,11941,11942,11943,11944,11945,11946,11947, -11948,11949,11950,11951,11952,11953,11954,11955,11956,11957,11958,11959, -11960,11961,11962,11963,11964,11965,11966,11967,11968,11969,11970,11971, -11972,11973,11974,11975,11976,11977,11978,11979,11980,11981,11982,11983, -11984,11985,11986,11987,11988,11989,11990,11991,11992,11993,11994,11995, -11996,11997,11998,11999,12000,12001,12002,12003,12004,12005,12006,12007, -12008,12009,12010,12011,12012,12013,12014,12015,12016,12017,12018,12019, -12020,12021,12022,12023,12024,12025,12026,12027,12028,12029,12030,12031, -12032,12033,12034,12035,12036,12037,12038,12039,12040,12041,12042,12043, -12044,12045,12046,12047,12048,12049,12050,12051,12052,12053,12054,12055, -12056,12057,12058,12059,12060,12061,12062,12063,12064,12065,12066,12067, -12068,12069,12070,12071,12072,12073,12074,12075,12076,12077,12078,12079, -12080,12081,12082,12083,12084,12085,12086,12087,12088,12089,12090,12091, -12092,12093,12094,12095,12096,12097,12098,12099,12100,12101,12102,12103, -12104,12105,12106,12107,12108,12109,12110,12111,12112,12113,12114,12115, -12116,12117,12118,12119,12120,12121,12122,12123,12124,12125,12126,12127, -12128,12129,12130,12131,12132,12133,12134,12135,12136,12137,12138,12139, -12140,12141,12142,12143,12144,12145,12146,12147,12148,12149,12150,12151, -12152,12153,12154,12155,12156,12157,12158,12159,12160,12161,12162,12163, -12164,12165,12166,12167,12168,12169,12170,12171,12172,12173,12174,12175, -12176,12177,12178,12179,12180,12181,12182,12183,12184,12185,12186,12187, -12188,12189,12190,12191,12192,12193,12194,12195,12196,12197,12198,12199, -12200,12201,12202,12203,12204,12205,12206,12207,12208,12209,12210,12211, -12212,12213,12214,12215,12216,12217,12218,12219,12220,12221,12222,12223, -12224,12225,12226,12227,12228,12229,12230,12231,12232,12233,12234,12235, -12236,12237,12238,12239,12240,12241,12242,12243,12244,12245,12246,12247, -12248,12249,12250,12251,12252,12253,12254,12255,12256,12257,12258,12259, -12260,12261,12262,12263,12264,12265,12266,12267,12268,12269,12270,12271, -12272,12273,12274,12275,12276,12277,12278,12279,12280,12281,12282,12283, -12284,12285,12286,12287,12288,12289,12290,12291,12292,12293,12294,12295, -12296,12297,12298,12299,12300,12301,12302,12303,12304,12305,12306,12307, -12308,12309,12310,12311,12312,12313,12314,12315,12316,12317,12318,12319, -12320,12321,12322,12323,12324,12325,12326,12327,12328,12329,12330,12331, -12332,12333,12334,12335,12336,12337,12338,12339,12340,12341,12342,12343, -12344,12345,12346,12347,12348,12349,12350,12351,12352,12353,12354,12355, -12356,12357,12358,12359,12360,12361,12362,12363,12364,12365,12366,12367, -12368,12369,12370,12371,12372,12373,12374,12375,12376,12377,12378,12379, -12380,12381,12382,12383,12384,12385,12386,12387,12388,12389,12390,12391, -12392,12393,12394,12395,12396,12397,12398,12399,12400,12401,12402,12403, -12404,12405,12406,12407,12408,12409,12410,12411,12412,12413,12414,12415, -12416,12417,12418,12419,12420,12421,12422,12423,12424,12425,12426,12427, -12428,12429,12430,12431,12432,12433,12434,12435,12436,12437,12438,12439, -12440,12441,12442,12443,12444,12445,12446,12447,12448,12449,12450,12451, -12452,12453,12454,12455,12456,12457,12458,12459,12460,12461,12462,12463, -12464,12465,12466,12467,12468,12469,12470,12471,12472,12473,12474,12475, -12476,12477,12478,12479,12480,12481,12482,12483,12484,12485,12486,12487, -12488,12489,12490,12491,12492,12493,12494,12495,12496,12497,12498,12499, -12500,12501,12502,12503,12504,12505,12506,12507,12508,12509,12510,12511, -12512,12513,12514,12515,12516,12517,12518,12519,12520,12521,12522,12523, -12524,12525,12526,12527,12528,12529,12530,12531,12532,12533,12534,12535, -12536,12537,12538,12539,12540,12541,12542,12543,12544,12545,12546,12547, -12548,12549,12550,12551,12552,12553,12554,12555,12556,12557,12558,12559, -12560,12561,12562,12563,12564,12565,12566,12567,12568,12569,12570,12571, -12572,12573,12574,12575,12576,12577,12578,12579,12580,12581,12582,12583, -12584,12585,12586,12587,12588,12589,12590,12591,12592,12593,12594,12595, -12596,12597,12598,12599,12600,12601,12602,12603,12604,12605,12606,12607, -12608,12609,12610,12611,12612,12613,12614,12615,12616,12617,12618,12619, -12620,12621,12622,12623,12624,12625,12626,12627,12628,12629,12630,12631, -12632,12633,12634,12635,12636,12637,12638,12639,12640,12641,12642,12643, -12644,12645,12646,12647,12648,12649,12650,12651,12652,12653,12654,12655, -12656,12657,12658,12659,12660,12661,12662,12663,12664,12665,12666,12667, -12668,12669,12670,12671,12672,12673,12674,12675,12676,12677,12678,12679, -12680,12681,12682,12683,12684,12685,12686,12687,12688,12689,12690,12691, -12692,12693,12694,12695,12696,12697,12698,12699,12700,12701,12702,12703, -12704,12705,12706,12707,12708,12709,12710,12711,12712,12713,12714,12715, -12716,12717,12718,12719,12720,12721,12722,12723,12724,12725,12726,12727, -12728,12729,12730,12731,12732,12733,12734,12735,12736,12737,12738,12739, -12740,12741,12742,12743,12744,12745,12746,12747,12748,12749,12750,12751, -12752,12753,12754,12755,12756,12757,12758,12759,12760,12761,12762,12763, -12764,12765,12766,12767,12768,12769,12770,12771,12772,12773,12774,12775, -12776,12777,12778,12779,12780,12781,12782,12783,12784,12785,12786,12787, -12788,12789,12790,12791,12792,12793,12794,12795,12796,12797,12798,12799, -12800,12801,12802,12803,12804,12805,12806,12807,12808,12809,12810,12811, -12812,12813,12814,12815,12816,12817,12818,12819,12820,12821,12822,12823, -12824,12825,12826,12827,12828,12829,12830,12831,12832,12833,12834,12835, -12836,12837,12838,12839,12840,12841,12842,12843,12844,12845,12846,12847, -12848,12849,12850,12851,12852,12853,12854,12855,12856,12857,12858,12859, -12860,12861,12862,12863,12864,12865,12866,12867,12868,12869,12870,12871, -12872,12873,12874,12875,12876,12877,12878,12879,12880,12881,12882,12883, -12884,12885,12886,12887,12888,12889,12890,12891,12892,12893,12894,12895, -12896,12897,12898,12899,12900,12901,12902,12903,12904,12905,12906,12907, -12908,12909,12910,12911,12912,12913,12914,12915,12916,12917,12918,12919, -12920,12921,12922,12923,12924,12925,12926,12927,12928,12929,12930,12931, -12932,12933,12934,12935,12936,12937,12938,12939,12940,12941,12942,12943, -12944,12945,12946,12947,12948,12949,12950,12951,12952,12953,12954,12955, -12956,12957,12958,12959,12960,12961,12962,12963,12964,12965,12966,12967, -12968,12969,12970,12971,12972,12973,12974,12975,12976,12977,12978,12979, -12980,12981,12982,12983,12984,12985,12986,12987,12988,12989,12990,12991, -12992,12993,12994,12995,12996,12997,12998,12999,13000,13001,13002,13003, -13004,13005,13006,13007,13008,13009,13010,13011,13012,13013,13014,13015, -13016,13017,13018,13019,13020,13021,13022,13023,13024,13025,13026,13027, -13028,13029,13030,13031,13032,13033,13034,13035,13036,13037,13038,13039, -13040,13041,13042,13043,13044,13045,13046,13047,13048,13049,13050,13051, -13052,13053,13054,13055,13056,13057,13058,13059,13060,13061,13062,13063, -13064,13065,13066,13067,13068,13069,13070,13071,13072,13073,13074,13075, -13076,13077,13078,13079,13080,13081,13082,13083,13084,13085,13086,13087, -13088,13089,13090,13091,13092,13093,13094,13095,13096,13097,13098,13099, -13100,13101,13102,13103,13104,13105,13106,13107,13108,13109,13110,13111, -13112,13113,13114,13115,13116,13117,13118,13119,13120,13121,13122,13123, -13124,13125,13126,13127,13128,13129,13130,13131,13132,13133,13134,13135, -13136,13137,13138,13139,13140,13141,13142,13143,13144,13145,13146,13147, -13148,13149,13150,13151,13152,13153,13154,13155,13156,13157,13158,13159, -13160,13161,13162,13163,13164,13165,13166,13167,13168,13169,13170,13171, -13172,13173,13174,13175,13176,13177,13178,13179,13180,13181,13182,13183, -13184,13185,13186,13187,13188,13189,13190,13191,13192,13193,13194,13195, -13196,13197,13198,13199,13200,13201,13202,13203,13204,13205,13206,13207, -13208,13209,13210,13211,13212,13213,13214,13215,13216,13217,13218,13219, -13220,13221,13222,13223,13224,13225,13226,13227,13228,13229,13230,13231, -13232,13233,13234,13235,13236,13237,13238,13239,13240,13241,13242,13243, -13244,13245,13246,13247,13248,13249,13250,13251,13252,13253,13254,13255, -13256,13257,13258,13259,13260,13261,13262,13263,13264,13265,13266,13267, -13268,13269,13270,13271,13272,13273,13274,13275,13276,13277,13278,13279, -13280,13281,13282,13283,13284,13285,13286,13287,13288,13289,13290,13291, -13292,13293,13294,13295,13296,13297,13298,13299,13300,13301,13302,13303, -13304,13305,13306,13307,13308,13309,13310,13311,13312,13313,13314,13315, -13316,13317,13318,13319,13320,13321,13322,13323,13324,13325,13326,13327, -13328,13329,13330,13331,13332,13333,13334,13335,13336,13337,13338,13339, -13340,13341,13342,13343,13344,13345,13346,13347,13348,13349,13350,13351, -13352,13353,13354,13355,13356,13357,13358,13359,13360,13361,13362,13363, -13364,13365,13366,13367,13368,13369,13370,13371,13372,13373,13374,13375, -13376,13377,13378,13379,13380,13381,13382,13383,13384,13385,13386,13387, -13388,13389,13390,13391,13392,13393,13394,13395,13396,13397,13398,13399, -13400,13401,13402,13403,13404,13405,13406,13407,13408,13409,13410,13411, -13412,13413,13414,13415,13416,13417,13418,13419,13420,13421,13422,13423, -13424,13425,13426,13427,13428,13429,13430,13431,13432,13433,13434,13435, -13436,13437,13438,13439,13440,13441,13442,13443,13444,13445,13446,13447, -13448,13449,13450,13451,13452,13453,13454,13455,13456,13457,13458,13459, -13460,13461,13462,13463,13464,13465,13466,13467,13468,13469,13470,13471, -13472,13473,13474,13475,13476,13477,13478,13479,13480,13481,13482,13483, -13484,13485,13486,13487,13488,13489,13490,13491,13492,13493,13494,13495, -13496,13497,13498,13499,13500,13501,13502,13503,13504,13505,13506,13507, -13508,13509,13510,13511,13512,13513,13514,13515,13516,13517,13518,13519, -13520,13521,13522,13523,13524,13525,13526,13527,13528,13529,13530,13531, -13532,13533,13534,13535,13536,13537,13538,13539,13540,13541,13542,13543, -13544,13545,13546,13547,13548,13549,13550,13551,13552,13553,13554,13555, -13556,13557,13558,13559,13560,13561,13562,13563,13564,13565,13566,13567, -13568,13569,13570,13571,13572,13573,13574,13575,13576,13577,13578,13579, -13580,13581,13582,13583,13584,13585,13586,13587,13588,13589,13590,13591, -13592,13593,13594,13595,13596,13597,13598,13599,13600,13601,13602,13603, -13604,13605,13606,13607,13608,13609,13610,13611,13612,13613,13614,13615, -13616,13617,13618,13619,13620,13621,13622,13623,13624,13625,13626,13627, -13628,13629,13630,13631,13632,13633,13634,13635,13636,13637,13638,13639, -13640,13641,13642,13643,13644,13645,13646,13647,13648,13649,13650,13651, -13652,13653,13654,13655,13656,13657,13658,13659,13660,13661,13662,13663, -13664,13665,13666,13667,13668,13669,13670,13671,13672,13673,13674,13675, -13676,13677,13678,13679,13680,13681,13682,13683,13684,13685,13686,13687, -13688,13689,13690,13691,13692,13693,13694,13695,13696,13697,13698,13699, -13700,13701,13702,13703,13704,13705,13706,13707,13708,13709,13710,13711, -13712,13713,13714,13715,13716,13717,13718,13719,13720,13721,13722,13723, -13724,13725,13726,13727,13728,13729,13730,13731,13732,13733,13734,13735, -13736,13737,13738,13739,13740,13741,13742,13743,13744,13745,13746,13747, -13748,13749,13750,13751,13752,13753,13754,13755,13756,13757,13758,13759, -13760,13761,13762,13763,13764,13765,13766,13767,13768,13769,13770,13771, -13772,13773,13774,13775,13776,13777,13778,13779,13780,13781,13782,13783, -13784,13785,13786,13787,13788,13789,13790,13791,13792,13793,13794,13795, -13796,13797,13798,13799,13800,13801,13802,13803,13804,13805,13806,13807, -13808,13809,13810,13811,13812,13813,13814,13815,13816,13817,13818,13819, -13820,13821,13822,13823,13824,13825,13826,13827,13828,13829,13830,13831, -13832,13833,13834,13835,13836,13837,13838,13839,13840,13841,13842,13843, -13844,13845,13846,13847,13848,13849,13850,13851,13852,13853,13854,13855, -13856,13857,13858,13859,13860,13861,13862,13863,13864,13865,13866,13867, -13868,13869,13870,13871,13872,13873,13874,13875,13876,13877,13878,13879, -13880,13881,13882,13883,13884,13885,13886,13887,13888,13889,13890,13891, -13892,13893,13894,13895,13896,13897,13898,13899,13900,13901,13902,13903, -13904,13905,13906,13907,13908,13909,13910,13911,13912,13913,13914,13915, -13916,13917,13918,13919,13920,13921,13922,13923,13924,13925,13926,13927, -13928,13929,13930,13931,13932,13933,13934,13935,13936,13937,13938,13939, -13940,13941,13942,13943,13944,13945,13946,13947,13948,13949,13950,13951, -13952,13953,13954,13955,13956,13957,13958,13959,13960,13961,13962,13963, -13964,13965,13966,13967,13968,13969,13970,13971,13972,13973,13974,13975, -13976,13977,13978,13979,13980,13981,13982,13983,13984,13985,13986,13987, -13988,13989,13990,13991,13992,13993,13994,13995,13996,13997,13998,13999, -14000,14001,14002,14003,14004,14005,14006,14007,14008,14009,14010,14011, -14012,14013,14014,14015,14016,14017,14018,14019,14020,14021,14022,14023, -14024,14025,14026,14027,14028,14029,14030,14031,14032,14033,14034,14035, -14036,14037,14038,14039,14040,14041,14042,14043,14044,14045,14046,14047, -14048,14049,14050,14051,14052,14053,14054,14055,14056,14057,14058,14059, -14060,14061,14062,14063,14064,14065,14066,14067,14068,14069,14070,14071, -14072,14073,14074,14075,14076,14077,14078,14079,14080,14081,14082,14083, -14084,14085,14086,14087,14088,14089,14090,14091,14092,14093,14094,14095, -14096,14097,14098,14099,14100,14101,14102,14103,14104,14105,14106,14107, -14108,14109,14110,14111,14112,14113,14114,14115,14116,14117,14118,14119, -14120,14121,14122,14123,14124,14125,14126,14127,14128,14129,14130,14131, -14132,14133,14134,14135,14136,14137,14138,14139,14140,14141,14142,14143, -14144,14145,14146,14147,14148,14149,14150,14151,14152,14153,14154,14155, -14156,14157,14158,14159,14160,14161,14162,14163,14164,14165,14166,14167, -14168,14169,14170,14171,14172,14173,14174,14175,14176,14177,14178,14179, -14180,14181,14182,14183,14184,14185,14186,14187,14188,14189,14190,14191, -14192,14193,14194,14195,14196,14197,14198,14199,14200,14201,14202,14203, -14204,14205,14206,14207,14208,14209,14210,14211,14212,14213,14214,14215, -14216,14217,14218,14219,14220,14221,14222,14223,14224,14225,14226,14227, -14228,14229,14230,14231,14232,14233,14234,14235,14236,14237,14238,14239, -14240,14241,14242,14243,14244,14245,14246,14247,14248,14249,14250,14251, -14252,14253,14254,14255,14256,14257,14258,14259,14260,14261,14262,14263, -14264,14265,14266,14267,14268,14269,14270,14271,14272,14273,14274,14275, -14276,14277,14278,14279,14280,14281,14282,14283,14284,14285,14286,14287, -14288,14289,14290,14291,14292,14293,14294,14295,14296,14297,14298,14299, -14300,14301,14302,14303,14304,14305,14306,14307,14308,14309,14310,14311, -14312,14313,14314,14315,14316,14317,14318,14319,14320,14321,14322,14323, -14324,14325,14326,14327,14328,14329,14330,14331,14332,14333,14334,14335, -14336,14337,14338,14339,14340,14341,14342,14343,14344,14345,14346,14347, -14348,14349,14350,14351,14352,14353,14354,14355,14356,14357,14358,14359, -14360,14361,14362,14363,14364,14365,14366,14367,14368,14369,14370,14371, -14372,14373,14374,14375,14376,14377,14378,14379,14380,14381,14382,14383, -14384,14385,14386,14387,14388,14389,14390,14391,14392,14393,14394,14395, -14396,14397,14398,14399,14400,14401,14402,14403,14404,14405,14406,14407, -14408,14409,14410,14411,14412,14413,14414,14415,14416,14417,14418,14419, -14420,14421,14422,14423,14424,14425,14426,14427,14428,14429,14430,14431, -14432,14433,14434,14435,14436,14437,14438,14439,14440,14441,14442,14443, -14444,14445,14446,14447,14448,14449,14450,14451,14452,14453,14454,14455, -14456,14457,14458,14459,14460,14461,14462,14463,14464,14465,14466,14467, -14468,14469,14470,14471,14472,14473,14474,14475,14476,14477,14478,14479, -14480,14481,14482,14483,14484,14485,14486,14487,14488,14489,14490,14491, -14492,14493,14494,14495,14496,14497,14498,14499,14500,14501,14502,14503, -14504,14505,14506,14507,14508,14509,14510,14511,14512,14513,14514,14515, -14516,14517,14518,14519,14520,14521,14522,14523,14524,14525,14526,14527, -14528,14529,14530,14531,14532,14533,14534,14535,14536,14537,14538,14539, -14540,14541,14542,14543,14544,14545,14546,14547,14548,14549,14550,14551, -14552,14553,14554,14555,14556,14557,14558,14559,14560,14561,14562,14563, -14564,14565,14566,14567,14568,14569,14570,14571,14572,14573,14574,14575, -14576,14577,14578,14579,14580,14581,14582,14583,14584,14585,14586,14587, -14588,14589,14590,14591,14592,14593,14594,14595,14596,14597,14598,14599, -14600,14601,14602,14603,14604,14605,14606,14607,14608,14609,14610,14611, -14612,14613,14614,14615,14616,14617,14618,14619,14620,14621,14622,14623, -14624,14625,14626,14627,14628,14629,14630,14631,14632,14633,14634,14635, -14636,14637,14638,14639,14640,14641,14642,14643,14644,14645,14646,14647, -14648,14649,14650,14651,14652,14653,14654,14655,14656,14657,14658,14659, -14660,14661,14662,14663,14664,14665,14666,14667,14668,14669,14670,14671, -14672,14673,14674,14675,14676,14677,14678,14679,14680,14681,14682,14683, -14684,14685,14686,14687,14688,14689,14690,14691,14692,14693,14694,14695, -14696,14697,14698,14699,14700,14701,14702,14703,14704,14705,14706,14707, -14708,14709,14710,14711,14712,14713,14714,14715,14716,14717,14718,14719, -14720,14721,14722,14723,14724,14725,14726,14727,14728,14729,14730,14731, -14732,14733,14734,14735,14736,14737,14738,14739,14740,14741,14742,14743, -14744,14745,14746,14747,14748,14749,14750,14751,14752,14753,14754,14755, -14756,14757,14758,14759,14760,14761,14762,14763,14764,14765,14766,14767, -14768,14769,14770,14771,14772,14773,14774,14775,14776,14777,14778,14779, -14780,14781,14782,14783,14784,14785,14786,14787,14788,14789,14790,14791, -14792,14793,14794,14795,14796,14797,14798,14799,14800,14801,14802,14803, -14804,14805,14806,14807,14808,14809,14810,14811,14812,14813,14814,14815, -14816,14817,14818,14819,14820,14821,14822,14823,14824,14825,14826,14827, -14828,14829,14830,14831,14832,14833,14834,14835,14836,14837,14838,14839, -14840,14841,14842,14843,14844,14845,14846,14847,14848,14849,14850,14851, -14852,14853,14854,14855,14856,14857,14858,14859,14860,14861,14862,14863, -14864,14865,14866,14867,14868,14869,14870,14871,14872,14873,14874,14875, -14876,14877,14878,14879,14880,14881,14882,14883,14884,14885,14886,14887, -14888,14889,14890,14891,14892,14893,14894,14895,14896,14897,14898,14899, -14900,14901,14902,14903,14904,14905,14906,14907,14908,14909,14910,14911, -14912,14913,14914,14915,14916,14917,14918,14919,14920,14921,14922,14923, -14924,14925,14926,14927,14928,14929,14930,14931,14932,14933,14934,14935, -14936,14937,14938,14939,14940,14941,14942,14943,14944,14945,14946,14947, -14948,14949,14950,14951,14952,14953,14954,14955,14956,14957,14958,14959, -14960,14961,14962,14963,14964,14965,14966,14967,14968,14969,14970,14971, -14972,14973,14974,14975,14976,14977,14978,14979,14980,14981,14982,14983, -14984,14985,14986,14987,14988,14989,14990,14991,14992,14993,14994,14995, -14996,14997,14998,14999,15000,15001,15002,15003,15004,15005,15006,15007, -15008,15009,15010,15011,15012,15013,15014,15015,15016,15017,15018,15019, -15020,15021,15022,15023,15024,15025,15026,15027,15028,15029,15030,15031, -15032,15033,15034,15035,15036,15037,15038,15039,15040,15041,15042,15043, -15044,15045,15046,15047,15048,15049,15050,15051,15052,15053,15054,15055, -15056,15057,15058,15059,15060,15061,15062,15063,15064,15065,15066,15067, -15068,15069,15070,15071,15072,15073,15074,15075,15076,15077,15078,15079, -15080,15081,15082,15083,15084,15085,15086,15087,15088,15089,15090,15091, -15092,15093,15094,15095,15096,15097,15098,15099,15100,15101,15102,15103, -15104,15105,15106,15107,15108,15109,15110,15111,15112,15113,15114,15115, -15116,15117,15118,15119,15120,15121,15122,15123,15124,15125,15126,15127, -15128,15129,15130,15131,15132,15133,15134,15135,15136,15137,15138,15139, -15140,15141,15142,15143,15144,15145,15146,15147,15148,15149,15150,15151, -15152,15153,15154,15155,15156,15157,15158,15159,15160,15161,15162,15163, -15164,15165,15166,15167,15168,15169,15170,15171,15172,15173,15174,15175, -15176,15177,15178,15179,15180,15181,15182,15183,15184,15185,15186,15187, -15188,15189,15190,15191,15192,15193,15194,15195,15196,15197,15198,15199, -15200,15201,15202,15203,15204,15205,15206,15207,15208,15209,15210,15211, -15212,15213,15214,15215,15216,15217,15218,15219,15220,15221,15222,15223, -15224,15225,15226,15227,15228,15229,15230,15231,15232,15233,15234,15235, -15236,15237,15238,15239,15240,15241,15242,15243,15244,15245,15246,15247, -15248,15249,15250,15251,15252,15253,15254,15255,15256,15257,15258,15259, -15260,15261,15262,15263,15264,15265,15266,15267,15268,15269,15270,15271, -15272,15273,15274,15275,15276,15277,15278,15279,15280,15281,15282,15283, -15284,15285,15286,15287,15288,15289,15290,15291,15292,15293,15294,15295, -15296,15297,15298,15299,15300,15301,15302,15303,15304,15305,15306,15307, -15308,15309,15310,15311,15312,15313,15314,15315,15316,15317,15318,15319, -15320,15321,15322,15323,15324,15325,15326,15327,15328,15329,15330,15331, -15332,15333,15334,15335,15336,15337,15338,15339,15340,15341,15342,15343, -15344,15345,15346,15347,15348,15349,15350,15351,15352,15353,15354,15355, -15356,15357,15358,15359,15360,15361,15362,15363,15364,15365,15366,15367, -15368,15369,15370,15371,15372,15373,15374,15375,15376,15377,15378,15379, -15380,15381,15382,15383,15384,15385,15386,15387,15388,15389,15390,15391, -15392,15393,15394,15395,15396,15397,15398,15399,15400,15401,15402,15403, -15404,15405,15406,15407,15408,15409,15410,15411,15412,15413,15414,15415, -15416,15417,15418,15419,15420,15421,15422,15423,15424,15425,15426,15427, -15428,15429,15430,15431,15432,15433,15434,15435,15436,15437,15438,15439, -15440,15441,15442,15443,15444,15445,15446,15447,15448,15449,15450,15451, -15452,15453,15454,15455,15456,15457,15458,15459,15460,15461,15462,15463, -15464,15465,15466,15467,15468,15469,15470,15471,15472,15473,15474,15475, -15476,15477,15478,15479,15480,15481,15482,15483,15484,15485,15486,15487, -15488,15489,15490,15491,15492,15493,15494,15495,15496,15497,15498,15499, -15500,15501,15502,15503,15504,15505,15506,15507,15508,15509,15510,15511, -15512,15513,15514,15515,15516,15517,15518,15519,15520,15521,15522,15523, -15524,15525,15526,15527,15528,15529,15530,15531,15532,15533,15534,15535, -15536,15537,15538,15539,15540,15541,15542,15543,15544,15545,15546,15547, -15548,15549,15550,15551,15552,15553,15554,15555,15556,15557,15558,15559, -15560,15561,15562,15563,15564,15565,15566,15567,15568,15569,15570,15571, -15572,15573,15574,15575,15576,15577,15578,15579,15580,15581,15582,15583, -15584,15585,15586,15587,15588,15589,15590,15591,15592,15593,15594,15595, -15596,15597,15598,15599,15600,15601,15602,15603,15604,15605,15606,15607, -15608,15609,15610,15611,15612,15613,15614,15615,15616,15617,15618,15619, -15620,15621,15622,15623,15624,15625,15626,15627,15628,15629,15630,15631, -15632,15633,15634,15635,15636,15637,15638,15639,15640,15641,15642,15643, -15644,15645,15646,15647,15648,15649,15650,15651,15652,15653,15654,15655, -15656,15657,15658,15659,15660,15661,15662,15663,15664,15665,15666,15667, -15668,15669,15670,15671,15672,15673,15674,15675,15676,15677,15678,15679, -15680,15681,15682,15683,15684,15685,15686,15687,15688,15689,15690,15691, -15692,15693,15694,15695,15696,15697,15698,15699,15700,15701,15702,15703, -15704,15705,15706,15707,15708,15709,15710,15711,15712,15713,15714,15715, -15716,15717,15718,15719,15720,15721,15722,15723,15724,15725,15726,15727, -15728,15729,15730,15731,15732,15733,15734,15735,15736,15737,15738,15739, -15740,15741,15742,15743,15744,15745,15746,15747,15748,15749,15750,15751, -15752,15753,15754,15755,15756,15757,15758,15759,15760,15761,15762,15763, -15764,15765,15766,15767,15768,15769,15770,15771,15772,15773,15774,15775, -15776,15777,15778,15779,15780,15781,15782,15783,15784,15785,15786,15787, -15788,15789,15790,15791,15792,15793,15794,15795,15796,15797,15798,15799, -15800,15801,15802,15803,15804,15805,15806,15807,15808,15809,15810,15811, -15812,15813,15814,15815,15816,15817,15818,15819,15820,15821,15822,15823, -15824,15825,15826,15827,15828,15829,15830,15831,15832,15833,15834,15835, -15836,15837,15838,15839,15840,15841,15842,15843,15844,15845,15846,15847, -15848,15849,15850,15851,15852,15853,15854,15855,15856,15857,15858,15859, -15860,15861,15862,15863,15864,15865,15866,15867,15868,15869,15870,15871, -15872,15873,15874,15875,15876,15877,15878,15879,15880,15881,15882,15883, -15884,15885,15886,15887,15888,15889,15890,15891,15892,15893,15894,15895, -15896,15897,15898,15899,15900,15901,15902,15903,15904,15905,15906,15907, -15908,15909,15910,15911,15912,15913,15914,15915,15916,15917,15918,15919, -15920,15921,15922,15923,15924,15925,15926,15927,15928,15929,15930,15931, -15932,15933,15934,15935,15936,15937,15938,15939,15940,15941,15942,15943, -15944,15945,15946,15947,15948,15949,15950,15951,15952,15953,15954,15955, -15956,15957,15958,15959,15960,15961,15962,15963,15964,15965,15966,15967, -15968,15969,15970,15971,15972,15973,15974,15975,15976,15977,15978,15979, -15980,15981,15982,15983,15984,15985,15986,15987,15988,15989,15990,15991, -15992,15993,15994,15995,15996,15997,15998,15999,16000,16001,16002,16003, -16004,16005,16006,16007,16008,16009,16010,16011,16012,16013,16014,16015, -16016,16017,16018,16019,16020,16021,16022,16023,16024,16025,16026,16027, -16028,16029,16030,16031,16032,16033,16034,16035,16036,16037,16038,16039, -16040,16041,16042,16043,16044,16045,16046,16047,16048,16049,16050,16051, -16052,16053,16054,16055,16056,16057,16058,16059,16060,16061,16062,16063, -16064,16065,16066,16067,16068,16069,16070,16071,16072,16073,16074,16075, -16076,16077,16078,16079,16080,16081,16082,16083,16084,16085,16086,16087, -16088,16089,16090,16091,16092,16093,16094,16095,16096,16097,16098,16099, -16100,16101,16102,16103,16104,16105,16106,16107,16108,16109,16110,16111, -16112,16113,16114,16115,16116,16117,16118,16119,16120,16121,16122,16123, -16124,16125,16126,16127,16128,16129,16130,16131,16132,16133,16134,16135, -16136,16137,16138,16139,16140,16141,16142,16143,16144,16145,16146,16147, -16148,16149,16150,16151,16152,16153,16154,16155,16156,16157,16158,16159, -16160,16161,16162,16163,16164,16165,16166,16167,16168,16169,16170,16171, -16172,16173,16174,16175,16176,16177,16178,16179,16180,16181,16182,16183, -16184,16185,16186,16187,16188,16189,16190,16191,16192,16193,16194,16195, -16196,16197,16198,16199,16200,16201,16202,16203,16204,16205,16206,16207, -16208,16209,16210,16211,16212,16213,16214,16215,16216,16217,16218,16219, -16220,16221,16222,16223,16224,16225,16226,16227,16228,16229,16230,16231, -16232,16233,16234,16235,16236,16237,16238,16239,16240,16241,16242,16243, -16244,16245,16246,16247,16248,16249,16250,16251,16252,16253,16254,16255, -16256,16257,16258,16259,16260,16261,16262,16263,16264,16265,16266,16267, -16268,16269,16270,16271,16272,16273,16274,16275,16276,16277,16278,16279, -16280,16281,16282,16283,16284,16285,16286,16287,16288,16289,16290,16291, -16292,16293,16294,16295,16296,16297,16298,16299,16300,16301,16302,16303, -16304,16305,16306,16307,16308,16309,16310,16311,16312,16313,16314,16315, -16316,16317,16318,16319,16320,16321,16322,16323,16324,16325,16326,16327, -16328,16329,16330,16331,16332,16333,16334,16335,16336,16337,16338,16339, -16340,16341,16342,16343,16344,16345,16346,16347,16348,16349,16350,16351, -16352,16353,16354,16355,16356,16357,16358,16359,16360,16361,16362,16363, -16364,16365,16366,16367,16368,16369,16370,16371,16372,16373,16374,16375, -16376,16377,16378,16379,16380,16381,16382,16383,16384,16385,16386,16387, -16388,16389,16390,16391,16392,16393,16394,16395,16396,16397,16398,16399, -16400,16401,16402,16403,16404,16405,16406,16407,16408,16409,16410,16411, -16412,16413,16414,16415,16416,16417,16418,16419,16420,16421,16422,16423, -16424,16425,16426,16427,16428,16429,16430,16431,16432,16433,16434,16435, -16436,16437,16438,16439,16440,16441,16442,16443,16444,16445,16446,16447, -16448,16449,16450,16451,16452,16453,16454,16455,16456,16457,16458,16459, -16460,16461,16462,16463,16464,16465,16466,16467,16468,16469,16470,16471, -16472,16473,16474,16475,16476,16477,16478,16479,16480,16481,16482,16483, -16484,16485,16486,16487,16488,16489,16490,16491,16492,16493,16494,16495, -16496,16497,16498,16499,16500,16501,16502,16503,16504,16505,16506,16507, -16508,16509,16510,16511,16512,16513,16514,16515,16516,16517,16518,16519, -16520,16521,16522,16523,16524,16525,16526,16527,16528,16529,16530,16531, -16532,16533,16534,16535,16536,16537,16538,16539,16540,16541,16542,16543, -16544,16545,16546,16547,16548,16549,16550,16551,16552,16553,16554,16555, -16556,16557,16558,16559,16560,16561,16562,16563,16564,16565,16566,16567, -16568,16569,16570,16571,16572,16573,16574,16575,16576,16577,16578,16579, -16580,16581,16582,16583,16584,16585,16586,16587,16588,16589,16590,16591, -16592,16593,16594,16595,16596,16597,16598,16599,16600,16601,16602,16603, -16604,16605,16606,16607,16608,16609,16610,16611,16612,16613,16614,16615, -16616,16617,16618,16619,16620,16621,16622,16623,16624,16625,16626,16627, -16628,16629,16630,16631,16632,16633,16634,16635,16636,16637,16638,16639, -16640,16641,16642,16643,16644,16645,16646,16647,16648,16649,16650,16651, -16652,16653,16654,16655,16656,16657,16658,16659,16660,16661,16662,16663, -16664,16665,16666,16667,16668,16669,16670,16671,16672,16673,16674,16675, -16676,16677,16678,16679,16680,16681,16682,16683,16684,16685,16686,16687, -16688,16689,16690,16691,16692,16693,16694,16695,16696,16697,16698,16699, -16700,16701,16702,16703,16704,16705,16706,16707,16708,16709,16710,16711, -16712,16713,16714,16715,16716,16717,16718,16719,16720,16721,16722,16723, -16724,16725,16726,16727,16728,16729,16730,16731,16732,16733,16734,16735, -16736,16737,16738,16739,16740,16741,16742,16743,16744,16745,16746,16747, -16748,16749,16750,16751,16752,16753,16754,16755,16756,16757,16758,16759, -16760,16761,16762,16763,16764,16765,16766,16767,16768,16769,16770,16771, -16772,16773,16774,16775,16776,16777,16778,16779,16780,16781,16782,16783, -16784,16785,16786,16787,16788,16789,16790,16791,16792,16793,16794,16795, -16796,16797,16798,16799,16800,16801,16802,16803,16804,16805,16806,16807, -16808,16809,16810,16811,16812,16813,16814,16815,16816,16817,16818,16819, -16820,16821,16822,16823,16824,16825,16826,16827,16828,16829,16830,16831, -16832,16833,16834,16835,16836,16837,16838,16839,16840,16841,16842,16843, -16844,16845,16846,16847,16848,16849,16850,16851,16852,16853,16854,16855, -16856,16857,16858,16859,16860,16861,16862,16863,16864,16865,16866,16867, -16868,16869,16870,16871,16872,16873,16874,16875,16876,16877,16878,16879, -16880,16881,16882,16883,16884,16885,16886,16887,16888,16889,16890,16891, -16892,16893,16894,16895,16896,16897,16898,16899,16900,16901,16902,16903, -16904,16905,16906,16907,16908,16909,16910,16911,16912,16913,16914,16915, -16916,16917,16918,16919,16920,16921,16922,16923,16924,16925,16926,16927, -16928,16929,16930,16931,16932,16933,16934,16935,16936,16937,16938,16939, -16940,16941,16942,16943,16944,16945,16946,16947,16948,16949,16950,16951, -16952,16953,16954,16955,16956,16957,16958,16959,16960,16961,16962,16963, -16964,16965,16966,16967,16968,16969,16970,16971,16972,16973,16974,16975, -16976,16977,16978,16979,16980,16981,16982,16983,16984,16985,16986,16987, -16988,16989,16990,16991,16992,16993,16994,16995,16996,16997,16998,16999, -17000,17001,17002,17003,17004,17005,17006,17007,17008,17009,17010,17011, -17012,17013,17014,17015,17016,17017,17018,17019,17020,17021,17022,17023, -17024,17025,17026,17027,17028,17029,17030,17031,17032,17033,17034,17035, -17036,17037,17038,17039,17040,17041,17042,17043,17044,17045,17046,17047, -17048,17049,17050,17051,17052,17053,17054,17055,17056,17057,17058,17059, -17060,17061,17062,17063,17064,17065,17066,17067,17068,17069,17070,17071, -17072,17073,17074,17075,17076,17077,17078,17079,17080,17081,17082,17083, -17084,17085,17086,17087,17088,17089,17090,17091,17092,17093,17094,17095, -17096,17097,17098,17099,17100,17101,17102,17103,17104,17105,17106,17107, -17108,17109,17110,17111,17112,17113,17114,17115,17116,17117,17118,17119, -17120,17121,17122,17123,17124,17125,17126,17127,17128,17129,17130,17131, -17132,17133,17134,17135,17136,17137,17138,17139,17140,17141,17142,17143, -17144,17145,17146,17147,17148,17149,17150,17151,17152,17153,17154,17155, -17156,17157,17158,17159,17160,17161,17162,17163,17164,17165,17166,17167, -17168,17169,17170,17171,17172,17173,17174,17175,17176,17177,17178,17179, -17180,17181,17182,17183,17184,17185,17186,17187,17188,17189,17190,17191, -17192,17193,17194,17195,17196,17197,17198,17199,17200,17201,17202,17203, -17204,17205,17206,17207,17208,17209,17210,17211,17212,17213,17214,17215, -17216,17217,17218,17219,17220,17221,17222,17223,17224,17225,17226,17227, -17228,17229,17230,17231,17232,17233,17234,17235,17236,17237,17238,17239, -17240,17241,17242,17243,17244,17245,17246,17247,17248,17249,17250,17251, -17252,17253,17254,17255,17256,17257,17258,17259,17260,17261,17262,17263, -17264,17265,17266,17267,17268,17269,17270,17271,17272,17273,17274,17275, -17276,17277,17278,17279,17280,17281,17282,17283,17284,17285,17286,17287, -17288,17289,17290,17291,17292,17293,17294,17295,17296,17297,17298,17299, -17300,17301,17302,17303,17304,17305,17306,17307,17308,17309,17310,17311, -17312,17313,17314,17315,17316,17317,17318,17319,17320,17321,17322,17323, -17324,17325,17326,17327,17328,17329,17330,17331,17332,17333,17334,17335, -17336,17337,17338,17339,17340,17341,17342,17343,17344,17345,17346,17347, -17348,17349,17350,17351,17352,17353,17354,17355,17356,17357,17358,17359, -17360,17361,17362,17363,17364,17365,17366,17367,17368,17369,17370,17371, -17372,17373,17374,17375,17376,17377,17378,17379,17380,17381,17382,17383, -17384,17385,17386,17387,17388,17389,17390,17391,17392,17393,17394,17395, -17396,17397,17398,17399,17400,17401,17402,17403,17404,17405,17406,17407, -17408,17409,17410,17411,17412,17413,17414,17415,17416,17417,17418,17419, -17420,17421,17422,17423,17424,17425,17426,17427,17428,17429,17430,17431, -17432,17433,17434,17435,17436,17437,17438,17439,17440,17441,17442,17443, -17444,17445,17446,17447,17448,17449,17450,17451,17452,17453,17454,17455, -17456,17457,17458,17459,17460,17461,17462,17463,17464,17465,17466,17467, -17468,17469,17470,17471,17472,17473,17474,17475,17476,17477,17478,17479, -17480,17481,17482,17483,17484,17485,17486,17487,17488,17489,17490,17491, -17492,17493,17494,17495,17496,17497,17498,17499,17500,17501,17502,17503, -17504,17505,17506,17507,17508,17509,17510,17511,17512,17513,17514,17515, -17516,17517,17518,17519,17520,17521,17522,17523,17524,17525,17526,17527, -17528,17529,17530,17531,17532,17533,17534,17535,17536,17537,17538,17539, -17540,17541,17542,17543,17544,17545,17546,17547,17548,17549,17550,17551, -17552,17553,17554,17555,17556,17557,17558,17559,17560,17561,17562,17563, -17564,17565,17566,17567,17568,17569,17570,17571,17572,17573,17574,17575, -17576,17577,17578,17579,17580,17581,17582,17583,17584,17585,17586,17587, -17588,17589,17590,17591,17592,17593,17594,17595,17596,17597,17598,17599, -17600,17601,17602,17603,17604,17605,17606,17607,17608,17609,17610,17611, -17612,17613,17614,17615,17616,17617,17618,17619,17620,17621,17622,17623, -17624,17625,17626,17627,17628,17629,17630,17631,17632,17633,17634,17635, -17636,17637,17638,17639,17640,17641,17642,17643,17644,17645,17646,17647, -17648,17649,17650,17651,17652,17653,17654,17655,17656,17657,17658,17659, -17660,17661,17662,17663,17664,17665,17666,17667,17668,17669,17670,17671, -17672,17673,17674,17675,17676,17677,17678,17679,17680,17681,17682,17683, -17684,17685,17686,17687,17688,17689,17690,17691,17692,17693,17694,17695, -17696,17697,17698,17699,17700,17701,17702,17703,17704,17705,17706,17707, -17708,17709,17710,17711,17712,17713,17714,17715,17716,17717,17718,17719, -17720,17721,17722,17723,17724,17725,17726,17727,17728,17729,17730,17731, -17732,17733,17734,17735,17736,17737,17738,17739,17740,17741,17742,17743, -17744,17745,17746,17747,17748,17749,17750,17751,17752,17753,17754,17755, -17756,17757,17758,17759,17760,17761,17762,17763,17764,17765,17766,17767, -17768,17769,17770,17771,17772,17773,17774,17775,17776,17777,17778,17779, -17780,17781,17782,17783,17784,17785,17786,17787,17788,17789,17790,17791, -17792,17793,17794,17795,17796,17797,17798,17799,17800,17801,17802,17803, -17804,17805,17806,17807,17808,17809,17810,17811,17812,17813,17814,17815, -17816,17817,17818,17819,17820,17821,17822,17823,17824,17825,17826,17827, -17828,17829,17830,17831,17832,17833,17834,17835,17836,17837,17838,17839, -17840,17841,17842,17843,17844,17845,17846,17847,17848,17849,17850,17851, -17852,17853,17854,17855,17856,17857,17858,17859,17860,17861,17862,17863, -17864,17865,17866,17867,17868,17869,17870,17871,17872,17873,17874,17875, -17876,17877,17878,17879,17880,17881,17882,17883,17884,17885,17886,17887, -17888,17889,17890,17891,17892,17893,17894,17895,17896,17897,17898,17899, -17900,17901,17902,17903,17904,17905,17906,17907,17908,17909,17910,17911, -17912,17913,17914,17915,17916,17917,17918,17919,17920,17921,17922,17923, -17924,17925,17926,17927,17928,17929,17930,17931,17932,17933,17934,17935, -17936,17937,17938,17939,17940,17941,17942,17943,17944,17945,17946,17947, -17948,17949,17950,17951,17952,17953,17954,17955,17956,17957,17958,17959, -17960,17961,17962,17963,17964,17965,17966,17967,17968,17969,17970,17971, -17972,17973,17974,17975,17976,17977,17978,17979,17980,17981,17982,17983, -17984,17985,17986,17987,17988,17989,17990,17991,17992,17993,17994,17995, -17996,17997,17998,17999,18000,18001,18002,18003,18004,18005,18006,18007, -18008,18009,18010,18011,18012,18013,18014,18015,18016,18017,18018,18019, -18020,18021,18022,18023,18024,18025,18026,18027,18028,18029,18030,18031, -18032,18033,18034,18035,18036,18037,18038,18039,18040,18041,18042,18043, -18044,18045,18046,18047,18048,18049,18050,18051,18052,18053,18054,18055, -18056,18057,18058,18059,18060,18061,18062,18063,18064,18065,18066,18067, -18068,18069,18070,18071,18072,18073,18074,18075,18076,18077,18078,18079, -18080,18081,18082,18083,18084,18085,18086,18087,18088,18089,18090,18091, -18092,18093,18094,18095,18096,18097,18098,18099,18100,18101,18102,18103, -18104,18105,18106,18107,18108,18109,18110,18111,18112,18113,18114,18115, -18116,18117,18118,18119,18120,18121,18122,18123,18124,18125,18126,18127, -18128,18129,18130,18131,18132,18133,18134,18135,18136,18137,18138,18139, -18140,18141,18142,18143,18144,18145,18146,18147,18148,18149,18150,18151, -18152,18153,18154,18155,18156,18157,18158,18159,18160,18161,18162,18163, -18164,18165,18166,18167,18168,18169,18170,18171,18172,18173,18174,18175, -18176,18177,18178,18179,18180,18181,18182,18183,18184,18185,18186,18187, -18188,18189,18190,18191,18192,18193,18194,18195,18196,18197,18198,18199, -18200,18201,18202,18203,18204,18205,18206,18207,18208,18209,18210,18211, -18212,18213,18214,18215,18216,18217,18218,18219,18220,18221,18222,18223, -18224,18225,18226,18227,18228,18229,18230,18231,18232,18233,18234,18235, -18236,18237,18238,18239,18240,18241,18242,18243,18244,18245,18246,18247, -18248,18249,18250,18251,18252,18253,18254,18255,18256,18257,18258,18259, -18260,18261,18262,18263,18264,18265,18266,18267,18268,18269,18270,18271, -18272,18273,18274,18275,18276,18277,18278,18279,18280,18281,18282,18283, -18284,18285,18286,18287,18288,18289,18290,18291,18292,18293,18294,18295, -18296,18297,18298,18299,18300,18301,18302,18303,18304,18305,18306,18307, -18308,18309,18310,18311,18312,18313,18314,18315,18316,18317,18318,18319, -18320,18321,18322,18323,18324,18325,18326,18327,18328,18329,18330,18331, -18332,18333,18334,18335,18336,18337,18338,18339,18340,18341,18342,18343, -18344,18345,18346,18347,18348,18349,18350,18351,18352,18353,18354,18355, -18356,18357,18358,18359,18360,18361,18362,18363,18364,18365,18366,18367, -18368,18369,18370,18371,18372,18373,18374,18375,18376,18377,18378,18379, -18380,18381,18382,18383,18384,18385,18386,18387,18388,18389,18390,18391, -18392,18393,18394,18395,18396,18397,18398,18399,18400,18401,18402,18403, -18404,18405,18406,18407,18408,18409,18410,18411,18412,18413,18414,18415, -18416,18417,18418,18419,18420,18421,18422,18423,18424,18425,18426,18427, -18428,18429,18430,18431,18432,18433,18434,18435,18436,18437,18438,18439, -18440,18441,18442,18443,18444,18445,18446,18447,18448,18449,18450,18451, -18452,18453,18454,18455,18456,18457,18458,18459,18460,18461,18462,18463, -18464,18465,18466,18467,18468,18469,18470,18471,18472,18473,18474,18475, -18476,18477,18478,18479,18480,18481,18482,18483,18484,18485,18486,18487, -18488,18489,18490,18491,18492,18493,18494,18495,18496,18497,18498,18499, -18500,18501,18502,18503,18504,18505,18506,18507,18508,18509,18510,18511, -18512,18513,18514,18515,18516,18517,18518,18519,18520,18521,18522,18523, -18524,18525,18526,18527,18528,18529,18530,18531,18532,18533,18534,18535, -18536,18537,18538,18539,18540,18541,18542,18543,18544,18545,18546,18547, -18548,18549,18550,18551,18552,18553,18554,18555,18556,18557,18558,18559, -18560,18561,18562,18563,18564,18565,18566,18567,18568,18569,18570,18571, -18572,18573,18574,18575,18576,18577,18578,18579,18580,18581,18582,18583, -18584,18585,18586,18587,18588,18589,18590,18591,18592,18593,18594,18595, -18596,18597,18598,18599,18600,18601,18602,18603,18604,18605,18606,18607, -18608,18609,18610,18611,18612,18613,18614,18615,18616,18617,18618,18619, -18620,18621,18622,18623,18624,18625,18626,18627,18628,18629,18630,18631, -18632,18633,18634,18635,18636,18637,18638,18639,18640,18641,18642,18643, -18644,18645,18646,18647,18648,18649,18650,18651,18652,18653,18654,18655, -18656,18657,18658,18659,18660,18661,18662,18663,18664,18665,18666,18667, -18668,18669,18670,18671,18672,18673,18674,18675,18676,18677,18678,18679, -18680,18681,18682,18683,18684,18685,18686,18687,18688,18689,18690,18691, -18692,18693,18694,18695,18696,18697,18698,18699,18700,18701,18702,18703, -18704,18705,18706,18707,18708,18709,18710,18711,18712,18713,18714,18715, -18716,18717,18718,18719,18720,18721,18722,18723,18724,18725,18726,18727, -18728,18729,18730,18731,18732,18733,18734,18735,18736,18737,18738,18739, -18740,18741,18742,18743,18744,18745,18746,18747,18748,18749,18750,18751, -18752,18753,18754,18755,18756,18757,18758,18759,18760,18761,18762,18763, -18764,18765,18766,18767,18768,18769,18770,18771,18772,18773,18774,18775, -18776,18777,18778,18779,18780,18781,18782,18783,18784,18785,18786,18787, -18788,18789,18790,18791,18792,18793,18794,18795,18796,18797,18798,18799, -18800,18801,18802,18803,18804,18805,18806,18807,18808,18809,18810,18811, -18812,18813,18814,18815,18816,18817,18818,18819,18820,18821,18822,18823, -18824,18825,18826,18827,18828,18829,18830,18831,18832,18833,18834,18835, -18836,18837,18838,18839,18840,18841,18842,18843,18844,18845,18846,18847, -18848,18849,18850,18851,18852,18853,18854,18855,18856,18857,18858,18859, -18860,18861,18862,18863,18864,18865,18866,18867,18868,18869,18870,18871, -18872,18873,18874,18875,18876,18877,18878,18879,18880,18881,18882,18883, -18884,18885,18886,18887,18888,18889,18890,18891,18892,18893,18894,18895, -18896,18897,18898,18899,18900,18901,18902,18903,18904,18905,18906,18907, -18908,18909,18910,18911,18912,18913,18914,18915,18916,18917,18918,18919, -18920,18921,18922,18923,18924,18925,18926,18927,18928,18929,18930,18931, -18932,18933,18934,18935,18936,18937,18938,18939,18940,18941,18942,18943, -18944,18945,18946,18947,18948,18949,18950,18951,18952,18953,18954,18955, -18956,18957,18958,18959,18960,18961,18962,18963,18964,18965,18966,18967, -18968,18969,18970,18971,18972,18973,18974,18975,18976,18977,18978,18979, -18980,18981,18982,18983,18984,18985,18986,18987,18988,18989,18990,18991, -18992,18993,18994,18995,18996,18997,18998,18999,19000,19001,19002,19003, -19004,19005,19006,19007,19008,19009,19010,19011,19012,19013,19014,19015, -19016,19017,19018,19019,19020,19021,19022,19023,19024,19025,19026,19027, -19028,19029,19030,19031,19032,19033,19034,19035,19036,19037,19038,19039, -19040,19041,19042,19043,19044,19045,19046,19047,19048,19049,19050,19051, -19052,19053,19054,19055,19056,19057,19058,19059,19060,19061,19062,19063, -19064,19065,19066,19067,19068,19069,19070,19071,19072,19073,19074,19075, -19076,19077,19078,19079,19080,19081,19082,19083,19084,19085,19086,19087, -19088,19089,19090,19091,19092,19093,19094,19095,19096,19097,19098,19099, -19100,19101,19102,19103,19104,19105,19106,19107,19108,19109,19110,19111, -19112,19113,19114,19115,19116,19117,19118,19119,19120,19121,19122,19123, -19124,19125,19126,19127,19128,19129,19130,19131,19132,19133,19134,19135, -19136,19137,19138,19139,19140,19141,19142,19143,19144,19145,19146,19147, -19148,19149,19150,19151,19152,19153,19154,19155,19156,19157,19158,19159, -19160,19161,19162,19163,19164,19165,19166,19167,19168,19169,19170,19171, -19172,19173,19174,19175,19176,19177,19178,19179,19180,19181,19182,19183, -19184,19185,19186,19187,19188,19189,19190,19191,19192,19193,19194,19195, -19196,19197,19198,19199,19200,19201,19202,19203,19204,19205,19206,19207, -19208,19209,19210,19211,19212,19213,19214,19215,19216,19217,19218,19219, -19220,19221,19222,19223,19224,19225,19226,19227,19228,19229,19230,19231, -19232,19233,19234,19235,19236,19237,19238,19239,19240,19241,19242,19243, -19244,19245,19246,19247,19248,19249,19250,19251,19252,19253,19254,19255, -19256,19257,19258,19259,19260,19261,19262,19263,19264,19265,19266,19267, -19268,19269,19270,19271,19272,19273,19274,19275,19276,19277,19278,19279, -19280,19281,19282,19283,19284,19285,19286,19287,19288,19289,19290,19291, -19292,19293,19294,19295,19296,19297,19298,19299,19300,19301,19302,19303, -19304,19305,19306,19307,19308,19309,19310,19311,19312,19313,19314,19315, -19316,19317,19318,19319,19320,19321,19322,19323,19324,19325,19326,19327, -19328,19329,19330,19331,19332,19333,19334,19335,19336,19337,19338,19339, -19340,19341,19342,19343,19344,19345,19346,19347,19348,19349,19350,19351, -19352,19353,19354,19355,19356,19357,19358,19359,19360,19361,19362,19363, -19364,19365,19366,19367,19368,19369,19370,19371,19372,19373,19374,19375, -19376,19377,19378,19379,19380,19381,19382,19383,19384,19385,19386,19387, -19388,19389,19390,19391,19392,19393,19394,19395,19396,19397,19398,19399, -19400,19401,19402,19403,19404,19405,19406,19407,19408,19409,19410,19411, -19412,19413,19414,19415,19416,19417,19418,19419,19420,19421,19422,19423, -19424,19425,19426,19427,19428,19429,19430,19431,19432,19433,19434,19435, -19436,19437,19438,19439,19440,19441,19442,19443,19444,19445,19446,19447, -19448,19449,19450,19451,19452,19453,19454,19455,19456,19457,19458,19459, -19460,19461,19462,19463,19464,19465,19466,19467,19468,19469,19470,19471, -19472,19473,19474,19475,19476,19477,19478,19479,19480,19481,19482,19483, -19484,19485,19486,19487,19488,19489,19490,19491,19492,19493,19494,19495, -19496,19497,19498,19499,19500,19501,19502,19503,19504,19505,19506,19507, -19508,19509,19510,19511,19512,19513,19514,19515,19516,19517,19518,19519, -19520,19521,19522,19523,19524,19525,19526,19527,19528,19529,19530,19531, -19532,19533,19534,19535,19536,19537,19538,19539,19540,19541,19542,19543, -19544,19545,19546,19547,19548,19549,19550,19551,19552,19553,19554,19555, -19556,19557,19558,19559,19560,19561,19562,19563,19564,19565,19566,19567, -19568,19569,19570,19571,19572,19573,19574,19575,19576,19577,19578,19579, -19580,19581,19582,19583,19584,19585,19586,19587,19588,19589,19590,19591, -19592,19593,19594,19595,19596,19597,19598,19599,19600,19601,19602,19603, -19604,19605,19606,19607,19608,19609,19610,19611,19612,19613,19614,19615, -19616,19617,19618,19619,19620,19621,19622,19623,19624,19625,19626,19627, -19628,19629,19630,19631,19632,19633,19634,19635,19636,19637,19638,19639, -19640,19641,19642,19643,19644,19645,19646,19647,19648,19649,19650,19651, -19652,19653,19654,19655,19656,19657,19658,19659,19660,19661,19662,19663, -19664,19665,19666,19667,19668,19669,19670,19671,19672,19673,19674,19675, -19676,19677,19678,19679,19680,19681,19682,19683,19684,19685,19686,19687, -19688,19689,19690,19691,19692,19693,19694,19695,19696,19697,19698,19699, -19700,19701,19702,19703,19704,19705,19706,19707,19708,19709,19710,19711, -19712,19713,19714,19715,19716,19717,19718,19719,19720,19721,19722,19723, -19724,19725,19726,19727,19728,19729,19730,19731,19732,19733,19734,19735, -19736,19737,19738,19739,19740,19741,19742,19743,19744,19745,19746,19747, -19748,19749,19750,19751,19752,19753,19754,19755,19756,19757,19758,19759, -19760,19761,19762,19763,19764,19765,19766,19767,19768,19769,19770,19771, -19772,19773,19774,19775,19776,19777,19778,19779,19780,19781,19782,19783, -19784,19785,19786,19787,19788,19789,19790,19791,19792,19793,19794,19795, -19796,19797,19798,19799,19800,19801,19802,19803,19804,19805,19806,19807, -19808,19809,19810,19811,19812,19813,19814,19815,19816,19817,19818,19819, -19820,19821,19822,19823,19824,19825,19826,19827,19828,19829,19830,19831, -19832,19833,19834,19835,19836,19837,19838,19839,19840,19841,19842,19843, -19844,19845,19846,19847,19848,19849,19850,19851,19852,19853,19854,19855, -19856,19857,19858,19859,19860,19861,19862,19863,19864,19865,19866,19867, -19868,19869,19870,19871,19872,19873,19874,19875,19876,19877,19878,19879, -19880,19881,19882,19883,19884,19885,19886,19887,19888,19889,19890,19891, -19892,19893,19894,19895,19896,19897,19898,19899,19900,19901,19902,19903, -19904,19905,19906,19907,19908,19909,19910,19911,19912,19913,19914,19915, -19916,19917,19918,19919,19920,19921,19922,19923,19924,19925,19926,19927, -19928,19929,19930,19931,19932,19933,19934,19935,19936,19937,19938,19939, -19940,19941,19942,19943,19944,19945,19946,19947,19948,19949,19950,19951, -19952,19953,19954,19955,19956,19957,19958,19959,19960,19961,19962,19963, -19964,19965,19966,19967,19968,19969,19970,19971,19972,19973,19974,19975, -19976,19977,19978,19979,19980,19981,19982,19983,19984,19985,19986,19987, -19988,19989,19990,19991,19992,19993,19994,19995,19996,19997,19998,19999, -20000,20001,20002,20003,20004,20005,20006,20007,20008,20009,20010,20011, -20012,20013,20014,20015,20016,20017,20018,20019,20020,20021,20022,20023, -20024,20025,20026,20027,20028,20029,20030,20031,20032,20033,20034,20035, -20036,20037,20038,20039,20040,20041,20042,20043,20044,20045,20046,20047, -20048,20049,20050,20051,20052,20053,20054,20055,20056,20057,20058,20059, -20060,20061,20062,20063,20064,20065,20066,20067,20068,20069,20070,20071, -20072,20073,20074,20075,20076,20077,20078,20079,20080,20081,20082,20083, -20084,20085,20086,20087,20088,20089,20090,20091,20092,20093,20094,20095, -20096,20097,20098,20099,20100,20101,20102,20103,20104,20105,20106,20107, -20108,20109,20110,20111,20112,20113,20114,20115,20116,20117,20118,20119, -20120,20121,20122,20123,20124,20125,20126,20127,20128,20129,20130,20131, -20132,20133,20134,20135,20136,20137,20138,20139,20140,20141,20142,20143, -20144,20145,20146,20147,20148,20149,20150,20151,20152,20153,20154,20155, -20156,20157,20158,20159,20160,20161,20162,20163,20164,20165,20166,20167, -20168,20169,20170,20171,20172,20173,20174,20175,20176,20177,20178,20179, -20180,20181,20182,20183,20184,20185,20186,20187,20188,20189,20190,20191, -20192,20193,20194,20195,20196,20197,20198,20199,20200,20201,20202,20203, -20204,20205,20206,20207,20208,20209,20210,20211,20212,20213,20214,20215, -20216,20217,20218,20219,20220,20221,20222,20223,20224,20225,20226,20227, -20228,20229,20230,20231,20232,20233,20234,20235,20236,20237,20238,20239, -20240,20241,20242,20243,20244,20245,20246,20247,20248,20249,20250,20251, -20252,20253,20254,20255,20256,20257,20258,20259,20260,20261,20262,20263, -20264,20265,20266,20267,20268,20269,20270,20271,20272,20273,20274,20275, -20276,20277,20278,20279,20280,20281,20282,20283,20284,20285,20286,20287, -20288,20289,20290,20291,20292,20293,20294,20295,20296,20297,20298,20299, -20300,20301,20302,20303,20304,20305,20306,20307,20308,20309,20310,20311, -20312,20313,20314,20315,20316,20317,20318,20319,20320,20321,20322,20323, -20324,20325,20326,20327,20328,20329,20330,20331,20332,20333,20334,20335, -20336,20337,20338,20339,20340,20341,20342,20343,20344,20345,20346,20347, -20348,20349,20350,20351,20352,20353,20354,20355,20356,20357,20358,20359, -20360,20361,20362,20363,20364,20365,20366,20367,20368,20369,20370,20371, -20372,20373,20374,20375,20376,20377,20378,20379,20380,20381,20382,20383, -20384,20385,20386,20387,20388,20389,20390,20391,20392,20393,20394,20395, -20396,20397,20398,20399,20400,20401,20402,20403,20404,20405,20406,20407, -20408,20409,20410,20411,20412,20413,20414,20415,20416,20417,20418,20419, -20420,20421,20422,20423,20424,20425,20426,20427,20428,20429,20430,20431, -20432,20433,20434,20435,20436,20437,20438,20439,20440,20441,20442,20443, -20444,20445,20446,20447,20448,20449,20450,20451,20452,20453,20454,20455, -20456,20457,20458,20459,20460,20461,20462,20463,20464,20465,20466,20467, -20468,20469,20470,20471,20472,20473,20474,20475,20476,20477,20478,20479, -20480,20481,20482,20483,20484,20485,20486,20487,20488,20489,20490,20491, -20492,20493,20494,20495,20496,20497,20498,20499,20500,20501,20502,20503, -20504,20505,20506,20507,20508,20509,20510,20511,20512,20513,20514,20515, -20516,20517,20518,20519,20520,20521,20522,20523,20524,20525,20526,20527, -20528,20529,20530,20531,20532,20533,20534,20535,20536,20537,20538,20539, -20540,20541,20542,20543,20544,20545,20546,20547,20548,20549,20550,20551, -20552,20553,20554,20555,20556,20557,20558,20559,20560,20561,20562,20563, -20564,20565,20566,20567,20568,20569,20570,20571,20572,20573,20574,20575, -20576,20577,20578,20579,20580,20581,20582,20583,20584,20585,20586,20587, -20588,20589,20590,20591,20592,20593,20594,20595,20596,20597,20598,20599, -20600,20601,20602,20603,20604,20605,20606,20607,20608,20609,20610,20611, -20612,20613,20614,20615,20616,20617,20618,20619,20620,20621,20622,20623, -20624,20625,20626,20627,20628,20629,20630,20631,20632,20633,20634,20635, -20636,20637,20638,20639,20640,20641,20642,20643,20644,20645,20646,20647, -20648,20649,20650,20651,20652,20653,20654,20655,20656,20657,20658,20659, -20660,20661,20662,20663,20664,20665,20666,20667,20668,20669,20670,20671, -20672,20673,20674,20675,20676,20677,20678,20679,20680,20681,20682,20683, -20684,20685,20686,20687,20688,20689,20690,20691,20692,20693,20694,20695, -20696,20697,20698,20699,20700,20701,20702,20703,20704,20705,20706,20707, -20708,20709,20710,20711,20712,20713,20714,20715,20716,20717,20718,20719, -20720,20721,20722,20723,20724,20725,20726,20727,20728,20729,20730,20731, -20732,20733,20734,20735,20736,20737,20738,20739,20740,20741,20742,20743, -20744,20745,20746,20747,20748,20749,20750,20751,20752,20753,20754,20755, -20756,20757,20758,20759,20760,20761,20762,20763,20764,20765,20766,20767, -20768,20769,20770,20771,20772,20773,20774,20775,20776,20777,20778,20779, -20780,20781,20782,20783,20784,20785,20786,20787,20788,20789,20790,20791, -20792,20793,20794,20795,20796,20797,20798,20799,20800,20801,20802,20803, -20804,20805,20806,20807,20808,20809,20810,20811,20812,20813,20814,20815, -20816,20817,20818,20819,20820,20821,20822,20823,20824,20825,20826,20827, -20828,20829,20830,20831,20832,20833,20834,20835,20836,20837,20838,20839, -20840,20841,20842,20843,20844,20845,20846,20847,20848,20849,20850,20851, -20852,20853,20854,20855,20856,20857,20858,20859,20860,20861,20862,20863, -20864,20865,20866,20867,20868,20869,20870,20871,20872,20873,20874,20875, -20876,20877,20878,20879,20880,20881,20882,20883,20884,20885,20886,20887, -20888,20889,20890,20891,20892,20893,20894,20895,20896,20897,20898,20899, -20900,20901,20902,20903,20904,20905,20906,20907,20908,20909,20910,20911, -20912,20913,20914,20915,20916,20917,20918,20919,20920,20921,20922,20923, -20924,20925,20926,20927,20928,20929,20930,20931,20932,20933,20934,20935, -20936,20937,20938,20939,20940,20941,20942,20943,20944,20945,20946,20947, -20948,20949,20950,20951,20952,20953,20954,20955,20956,20957,20958,20959, -20960,20961,20962,20963,20964,20965,20966,20967,20968,20969,20970,20971, -20972,20973,20974,20975,20976,20977,20978,20979,20980,20981,20982,20983, -20984,20985,20986,20987,20988,20989,20990,20991,20992,20993,20994,20995, -20996,20997,20998,20999,21000,21001,21002,21003,21004,21005,21006,21007, -21008,21009,21010,21011,21012,21013,21014,21015,21016,21017,21018,21019, -21020,21021,21022,21023,21024,21025,21026,21027,21028,21029,21030,21031, -21032,21033,21034,21035,21036,21037,21038,21039,21040,21041,21042,21043, -21044,21045,21046,21047,21048,21049,21050,21051,21052,21053,21054,21055, -21056,21057,21058,21059,21060,21061,21062,21063,21064,21065,21066,21067, -21068,21069,21070,21071,21072,21073,21074,21075,21076,21077,21078,21079, -21080,21081,21082,21083,21084,21085,21086,21087,21088,21089,21090,21091, -21092,21093,21094,21095,21096,21097,21098,21099,21100,21101,21102,21103, -21104,21105,21106,21107,21108,21109,21110,21111,21112,21113,21114,21115, -21116,21117,21118,21119,21120,21121,21122,21123,21124,21125,21126,21127, -21128,21129,21130,21131,21132,21133,21134,21135,21136,21137,21138,21139, -21140,21141,21142,21143,21144,21145,21146,21147,21148,21149,21150,21151, -21152,21153,21154,21155,21156,21157,21158,21159,21160,21161,21162,21163, -21164,21165,21166,21167,21168,21169,21170,21171,21172,21173,21174,21175, -21176,21177,21178,21179,21180,21181,21182,21183,21184,21185,21186,21187, -21188,21189,21190,21191,21192,21193,21194,21195,21196,21197,21198,21199, -21200,21201,21202,21203,21204,21205,21206,21207,21208,21209,21210,21211, -21212,21213,21214,21215,21216,21217,21218,21219,21220,21221,21222,21223, -21224,21225,21226,21227,21228,21229,21230,21231,21232,21233,21234,21235, -21236,21237,21238,21239,21240,21241,21242,21243,21244,21245,21246,21247, -21248,21249,21250,21251,21252,21253,21254,21255,21256,21257,21258,21259, -21260,21261,21262,21263,21264,21265,21266,21267,21268,21269,21270,21271, -21272,21273,21274,21275,21276,21277,21278,21279,21280,21281,21282,21283, -21284,21285,21286,21287,21288,21289,21290,21291,21292,21293,21294,21295, -21296,21297,21298,21299,21300,21301,21302,21303,21304,21305,21306,21307, -21308,21309,21310,21311,21312,21313,21314,21315,21316,21317,21318,21319, -21320,21321,21322,21323,21324,21325,21326,21327,21328,21329,21330,21331, -21332,21333,21334,21335,21336,21337,21338,21339,21340,21341,21342,21343, -21344,21345,21346,21347,21348,21349,21350,21351,21352,21353,21354,21355, -21356,21357,21358,21359,21360,21361,21362,21363,21364,21365,21366,21367, -21368,21369,21370,21371,21372,21373,21374,21375,21376,21377,21378,21379, -21380,21381,21382,21383,21384,21385,21386,21387,21388,21389,21390,21391, -21392,21393,21394,21395,21396,21397,21398,21399,21400,21401,21402,21403, -21404,21405,21406,21407,21408,21409,21410,21411,21412,21413,21414,21415, -21416,21417,21418,21419,21420,21421,21422,21423,21424,21425,21426,21427, -21428,21429,21430,21431,21432,21433,21434,21435,21436,21437,21438,21439, -21440,21441,21442,21443,21444,21445,21446,21447,21448,21449,21450,21451, -21452,21453,21454,21455,21456,21457,21458,21459,21460,21461,21462,21463, -21464,21465,21466,21467,21468,21469,21470,21471,21472,21473,21474,21475, -21476,21477,21478,21479,21480,21481,21482,21483,21484,21485,21486,21487, -21488,21489,21490,21491,21492,21493,21494,21495,21496,21497,21498,21499, -21500,21501,21502,21503,21504,21505,21506,21507,21508,21509,21510,21511, -21512,21513,21514,21515,21516,21517,21518,21519,21520,21521,21522,21523, -21524,21525,21526,21527,21528,21529,21530,21531,21532,21533,21534,21535, -21536,21537,21538,21539,21540,21541,21542,21543,21544,21545,21546,21547, -21548,21549,21550,21551,21552,21553,21554,21555,21556,21557,21558,21559, -21560,21561,21562,21563,21564,21565,21566,21567,21568,21569,21570,21571, -21572,21573,21574,21575,21576,21577,21578,21579,21580,21581,21582,21583, -21584,21585,21586,21587,21588,21589,21590,21591,21592,21593,21594,21595, -21596,21597,21598,21599,21600,21601,21602,21603,21604,21605,21606,21607, -21608,21609,21610,21611,21612,21613,21614,21615,21616,21617,21618,21619, -21620,21621,21622,21623,21624,21625,21626,21627,21628,21629,21630,21631, -21632,21633,21634,21635,21636,21637,21638,21639,21640,21641,21642,21643, -21644,21645,21646,21647,21648,21649,21650,21651,21652,21653,21654,21655, -21656,21657,21658,21659,21660,21661,21662,21663,21664,21665,21666,21667, -21668,21669,21670,21671,21672,21673,21674,21675,21676,21677,21678,21679, -21680,21681,21682,21683,21684,21685,21686,21687,21688,21689,21690,21691, -21692,21693,21694,21695,21696,21697,21698,21699,21700,21701,21702,21703, -21704,21705,21706,21707,21708,21709,21710,21711,21712,21713,21714,21715, -21716,21717,21718,21719,21720,21721,21722,21723,21724,21725,21726,21727, -21728,21729,21730,21731,21732,21733,21734,21735,21736,21737,21738,21739, -21740,21741,21742,21743,21744,21745,21746,21747,21748,21749,21750,21751, -21752,21753,21754,21755,21756,21757,21758,21759,21760,21761,21762,21763, -21764,21765,21766,21767,21768,21769,21770,21771,21772,21773,21774,21775, -21776,21777,21778,21779,21780,21781,21782,21783,21784,21785,21786,21787, -21788,21789,21790,21791,21792,21793,21794,21795,21796,21797,21798,21799, -21800,21801,21802,21803,21804,21805,21806,21807,21808,21809,21810,21811, -21812,21813,21814,21815,21816,21817,21818,21819,21820,21821,21822,21823, -21824,21825,21826,21827,21828,21829,21830,21831,21832,21833,21834,21835, -21836,21837,21838,21839,21840,21841,21842,21843,21844,21845,21846,21847, -21848,21849,21850,21851,21852,21853,21854,21855,21856,21857,21858,21859, -21860,21861,21862,21863,21864,21865,21866,21867,21868,21869,21870,21871, -21872,21873,21874,21875,21876,21877,21878,21879,21880,21881,21882,21883, -21884,21885,21886,21887,21888,21889,21890,21891,21892,21893,21894,21895, -21896,21897,21898,21899,21900,21901,21902,21903,21904,21905,21906,21907, -21908,21909,21910,21911,21912,21913,21914,21915,21916,21917,21918,21919, -21920,21921,21922,21923,21924,21925,21926,21927,21928,21929,21930,21931, -21932,21933,21934,21935,21936,21937,21938,21939,21940,21941,21942,21943, -21944,21945,21946,21947,21948,21949,21950,21951,21952,21953,21954,21955, -21956,21957,21958,21959,21960,21961,21962,21963,21964,21965,21966,21967, -21968,21969,21970,21971,21972,21973,21974,21975,21976,21977,21978,21979, -21980,21981,21982,21983,21984,21985,21986,21987,21988,21989,21990,21991, -21992,21993,21994,21995,21996,21997,21998,21999,22000,22001,22002,22003, -22004,22005,22006,22007,22008,22009,22010,22011,22012,22013,22014,22015, -22016,22017,22018,22019,22020,22021,22022,22023,22024,22025,22026,22027, -22028,22029,22030,22031,22032,22033,22034,22035,22036,22037,22038,22039, -22040,22041,22042,22043,22044,22045,22046,22047,22048,22049,22050,22051, -22052,22053,22054,22055,22056,22057,22058,22059,22060,22061,22062,22063, -22064,22065,22066,22067,22068,22069,22070,22071,22072,22073,22074,22075, -22076,22077,22078,22079,22080,22081,22082,22083,22084,22085,22086,22087, -22088,22089,22090,22091,22092,22093,22094,22095,22096,22097,22098,22099, -22100,22101,22102,22103,22104,22105,22106,22107,22108,22109,22110,22111, -22112,22113,22114,22115,22116,22117,22118,22119,22120,22121,22122,22123, -22124,22125,22126,22127,22128,22129,22130,22131,22132,22133,22134,22135, -22136,22137,22138,22139,22140,22141,22142,22143,22144,22145,22146,22147, -22148,22149,22150,22151,22152,22153,22154,22155,22156,22157,22158,22159, -22160,22161,22162,22163,22164,22165,22166,22167,22168,22169,22170,22171, -22172,22173,22174,22175,22176,22177,22178,22179,22180,22181,22182,22183, -22184,22185,22186,22187,22188,22189,22190,22191,22192,22193,22194,22195, -22196,22197,22198,22199,22200,22201,22202,22203,22204,22205,22206,22207, -22208,22209,22210,22211,22212,22213,22214,22215,22216,22217,22218,22219, -22220,22221,22222,22223,22224,22225,22226,22227,22228,22229,22230,22231, -22232,22233,22234,22235,22236,22237,22238,22239,22240,22241,22242,22243, -22244,22245,22246,22247,22248,22249,22250,22251,22252,22253,22254,22255, -22256,22257,22258,22259,22260,22261,22262,22263,22264,22265,22266,22267, -22268,22269,22270,22271,22272,22273,22274,22275,22276,22277,22278,22279, -22280,22281,22282,22283,22284,22285,22286,22287,22288,22289,22290,22291, -22292,22293,22294,22295,22296,22297,22298,22299,22300,22301,22302,22303, -22304,22305,22306,22307,22308,22309,22310,22311,22312,22313,22314,22315, -22316,22317,22318,22319,22320,22321,22322,22323,22324,22325,22326,22327, -22328,22329,22330,22331,22332,22333,22334,22335,22336,22337,22338,22339, -22340,22341,22342,22343,22344,22345,22346,22347,22348,22349,22350,22351, -22352,22353,22354,22355,22356,22357,22358,22359,22360,22361,22362,22363, -22364,22365,22366,22367,22368,22369,22370,22371,22372,22373,22374,22375, -22376,22377,22378,22379,22380,22381,22382,22383,22384,22385,22386,22387, -22388,22389,22390,22391,22392,22393,22394,22395,22396,22397,22398,22399, -22400,22401,22402,22403,22404,22405,22406,22407,22408,22409,22410,22411, -22412,22413,22414,22415,22416,22417,22418,22419,22420,22421,22422,22423, -22424,22425,22426,22427,22428,22429,22430,22431,22432,22433,22434,22435, -22436,22437,22438,22439,22440,22441,22442,22443,22444,22445,22446,22447, -22448,22449,22450,22451,22452,22453,22454,22455,22456,22457,22458,22459, -22460,22461,22462,22463,22464,22465,22466,22467,22468,22469,22470,22471, -22472,22473,22474,22475,22476,22477,22478,22479,22480,22481,22482,22483, -22484,22485,22486,22487,22488,22489,22490,22491,22492,22493,22494,22495, -22496,22497,22498,22499,22500,22501,22502,22503,22504,22505,22506,22507, -22508,22509,22510,22511,22512,22513,22514,22515,22516,22517,22518,22519, -22520,22521,22522,22523,22524,22525,22526,22527,22528,22529,22530,22531, -22532,22533,22534,22535,22536,22537,22538,22539,22540,22541,22542,22543, -22544,22545,22546,22547,22548,22549,22550,22551,22552,22553,22554,22555, -22556,22557,22558,22559,22560,22561,22562,22563,22564,22565,22566,22567, -22568,22569,22570,22571,22572,22573,22574,22575,22576,22577,22578,22579, -22580,22581,22582,22583,22584,22585,22586,22587,22588,22589,22590,22591, -22592,22593,22594,22595,22596,22597,22598,22599,22600,22601,22602,22603, -22604,22605,22606,22607,22608,22609,22610,22611,22612,22613,22614,22615, -22616,22617,22618,22619,22620,22621,22622,22623,22624,22625,22626,22627, -22628,22629,22630,22631,22632,22633,22634,22635,22636,22637,22638,22639, -22640,22641,22642,22643,22644,22645,22646,22647,22648,22649,22650,22651, -22652,22653,22654,22655,22656,22657,22658,22659,22660,22661,22662,22663, -22664,22665,22666,22667,22668,22669,22670,22671,22672,22673,22674,22675, -22676,22677,22678,22679,22680,22681,22682,22683,22684,22685,22686,22687, -22688,22689,22690,22691,22692,22693,22694,22695,22696,22697,22698,22699, -22700,22701,22702,22703,22704,22705,22706,22707,22708,22709,22710,22711, -22712,22713,22714,22715,22716,22717,22718,22719,22720,22721,22722,22723, -22724,22725,22726,22727,22728,22729,22730,22731,22732,22733,22734,22735, -22736,22737,22738,22739,22740,22741,22742,22743,22744,22745,22746,22747, -22748,22749,22750,22751,22752,22753,22754,22755,22756,22757,22758,22759, -22760,22761,22762,22763,22764,22765,22766,22767,22768,22769,22770,22771, -22772,22773,22774,22775,22776,22777,22778,22779,22780,22781,22782,22783, -22784,22785,22786,22787,22788,22789,22790,22791,22792,22793,22794,22795, -22796,22797,22798,22799,22800,22801,22802,22803,22804,22805,22806,22807, -22808,22809,22810,22811,22812,22813,22814,22815,22816,22817,22818,22819, -22820,22821,22822,22823,22824,22825,22826,22827,22828,22829,22830,22831, -22832,22833,22834,22835,22836,22837,22838,22839,22840,22841,22842,22843, -22844,22845,22846,22847,22848,22849,22850,22851,22852,22853,22854,22855, -22856,22857,22858,22859,22860,22861,22862,22863,22864,22865,22866,22867, -22868,22869,22870,22871,22872,22873,22874,22875,22876,22877,22878,22879, -22880,22881,22882,22883,22884,22885,22886,22887,22888,22889,22890,22891, -22892,22893,22894,22895,22896,22897,22898,22899,22900,22901,22902,22903, -22904,22905,22906,22907,22908,22909,22910,22911,22912,22913,22914,22915, -22916,22917,22918,22919,22920,22921,22922,22923,22924,22925,22926,22927, -22928,22929,22930,22931,22932,22933,22934,22935,22936,22937,22938,22939, -22940,22941,22942,22943,22944,22945,22946,22947,22948,22949,22950,22951, -22952,22953,22954,22955,22956,22957,22958,22959,22960,22961,22962,22963, -22964,22965,22966,22967,22968,22969,22970,22971,22972,22973,22974,22975, -22976,22977,22978,22979,22980,22981,22982,22983,22984,22985,22986,22987, -22988,22989,22990,22991,22992,22993,22994,22995,22996,22997,22998,22999, -23000,23001,23002,23003,23004,23005,23006,23007,23008,23009,23010,23011, -23012,23013,23014,23015,23016,23017,23018,23019,23020,23021,23022,23023, -23024,23025,23026,23027,23028,23029,23030,23031,23032,23033,23034,23035, -23036,23037,23038,23039,23040,23041,23042,23043,23044,23045,23046,23047, -23048,23049,23050,23051,23052,23053,23054,23055,23056,23057,23058,23059, -23060,23061,23062,23063,23064,23065,23066,23067,23068,23069,23070,23071, -23072,23073,23074,23075,23076,23077,23078,23079,23080,23081,23082,23083, -23084,23085,23086,23087,23088,23089,23090,23091,23092,23093,23094,23095, -23096,23097,23098,23099,23100,23101,23102,23103,23104,23105,23106,23107, -23108,23109,23110,23111,23112,23113,23114,23115,23116,23117,23118,23119, -23120,23121,23122,23123,23124,23125,23126,23127,23128,23129,23130,23131, -23132,23133,23134,23135,23136,23137,23138,23139,23140,23141,23142,23143, -23144,23145,23146,23147,23148,23149,23150,23151,23152,23153,23154,23155, -23156,23157,23158,23159,23160,23161,23162,23163,23164,23165,23166,23167, -23168,23169,23170,23171,23172,23173,23174,23175,23176,23177,23178,23179, -23180,23181,23182,23183,23184,23185,23186,23187,23188,23189,23190,23191, -23192,23193,23194,23195,23196,23197,23198,23199,23200,23201,23202,23203, -23204,23205,23206,23207,23208,23209,23210,23211,23212,23213,23214,23215, -23216,23217,23218,23219,23220,23221,23222,23223,23224,23225,23226,23227, -23228,23229,23230,23231,23232,23233,23234,23235,23236,23237,23238,23239, -23240,23241,23242,23243,23244,23245,23246,23247,23248,23249,23250,23251, -23252,23253,23254,23255,23256,23257,23258,23259,23260,23261,23262,23263, -23264,23265,23266,23267,23268,23269,23270,23271,23272,23273,23274,23275, -23276,23277,23278,23279,23280,23281,23282,23283,23284,23285,23286,23287, -23288,23289,23290,23291,23292,23293,23294,23295,23296,23297,23298,23299, -23300,23301,23302,23303,23304,23305,23306,23307,23308,23309,23310,23311, -23312,23313,23314,23315,23316,23317,23318,23319,23320,23321,23322,23323, -23324,23325,23326,23327,23328,23329,23330,23331,23332,23333,23334,23335, -23336,23337,23338,23339,23340,23341,23342,23343,23344,23345,23346,23347, -23348,23349,23350,23351,23352,23353,23354,23355,23356,23357,23358,23359, -23360,23361,23362,23363,23364,23365,23366,23367,23368,23369,23370,23371, -23372,23373,23374,23375,23376,23377,23378,23379,23380,23381,23382,23383, -23384,23385,23386,23387,23388,23389,23390,23391,23392,23393,23394,23395, -23396,23397,23398,23399,23400,23401,23402,23403,23404,23405,23406,23407, -23408,23409,23410,23411,23412,23413,23414,23415,23416,23417,23418,23419, -23420,23421,23422,23423,23424,23425,23426,23427,23428,23429,23430,23431, -23432,23433,23434,23435,23436,23437,23438,23439,23440,23441,23442,23443, -23444,23445,23446,23447,23448,23449,23450,23451,23452,23453,23454,23455, -23456,23457,23458,23459,23460,23461,23462,23463,23464,23465,23466,23467, -23468,23469,23470,23471,23472,23473,23474,23475,23476,23477,23478,23479, -23480,23481,23482,23483,23484,23485,23486,23487,23488,23489,23490,23491, -23492,23493,23494,23495,23496,23497,23498,23499,23500,23501,23502,23503, -23504,23505,23506,23507,23508,23509,23510,23511,23512,23513,23514,23515, -23516,23517,23518,23519,23520,23521,23522,23523,23524,23525,23526,23527, -23528,23529,23530,23531,23532,23533,23534,23535,23536,23537,23538,23539, -23540,23541,23542,23543,23544,23545,23546,23547,23548,23549,23550,23551, -23552,23553,23554,23555,23556,23557,23558,23559,23560,23561,23562,23563, -23564,23565,23566,23567,23568,23569,23570,23571,23572,23573,23574,23575, -23576,23577,23578,23579,23580,23581,23582,23583,23584,23585,23586,23587, -23588,23589,23590,23591,23592,23593,23594,23595,23596,23597,23598,23599, -23600,23601,23602,23603,23604,23605,23606,23607,23608,23609,23610,23611, -23612,23613,23614,23615,23616,23617,23618,23619,23620,23621,23622,23623, -23624,23625,23626,23627,23628,23629,23630,23631,23632,23633,23634,23635, -23636,23637,23638,23639,23640,23641,23642,23643,23644,23645,23646,23647, -23648,23649,23650,23651,23652,23653,23654,23655,23656,23657,23658,23659, -23660,23661,23662,23663,23664,23665,23666,23667,23668,23669,23670,23671, -23672,23673,23674,23675,23676,23677,23678,23679,23680,23681,23682,23683, -23684,23685,23686,23687,23688,23689,23690,23691,23692,23693,23694,23695, -23696,23697,23698,23699,23700,23701,23702,23703,23704,23705,23706,23707, -23708,23709,23710,23711,23712,23713,23714,23715,23716,23717,23718,23719, -23720,23721,23722,23723,23724,23725,23726,23727,23728,23729,23730,23731, -23732,23733,23734,23735,23736,23737,23738,23739,23740,23741,23742,23743, -23744,23745,23746,23747,23748,23749,23750,23751,23752,23753,23754,23755, -23756,23757,23758,23759,23760,23761,23762,23763,23764,23765,23766,23767, -23768,23769,23770,23771,23772,23773,23774,23775,23776,23777,23778,23779, -23780,23781,23782,23783,23784,23785,23786,23787,23788,23789,23790,23791, -23792,23793,23794,23795,23796,23797,23798,23799,23800,23801,23802,23803, -23804,23805,23806,23807,23808,23809,23810,23811,23812,23813,23814,23815, -23816,23817,23818,23819,23820,23821,23822,23823,23824,23825,23826,23827, -23828,23829,23830,23831,23832,23833,23834,23835,23836,23837,23838,23839, -23840,23841,23842,23843,23844,23845,23846,23847,23848,23849,23850,23851, -23852,23853,23854,23855,23856,23857,23858,23859,23860,23861,23862,23863, -23864,23865,23866,23867,23868,23869,23870,23871,23872,23873,23874,23875, -23876,23877,23878,23879,23880,23881,23882,23883,23884,23885,23886,23887, -23888,23889,23890,23891,23892,23893,23894,23895,23896,23897,23898,23899, -23900,23901,23902,23903,23904,23905,23906,23907,23908,23909,23910,23911, -23912,23913,23914,23915,23916,23917,23918,23919,23920,23921,23922,23923, -23924,23925,23926,23927,23928,23929,23930,23931,23932,23933,23934,23935, -23936,23937,23938,23939,23940,23941,23942,23943,23944,23945,23946,23947, -23948,23949,23950,23951,23952,23953,23954,23955,23956,23957,23958,23959, -23960,23961,23962,23963,23964,23965,23966,23967,23968,23969,23970,23971, -23972,23973,23974,23975,23976,23977,23978,23979,23980,23981,23982,23983, -23984,23985,23986,23987,23988,23989,23990,23991,23992,23993,23994,23995, -23996,23997,23998,23999,24000,24001,24002,24003,24004,24005,24006,24007, -24008,24009,24010,24011,24012,24013,24014,24015,24016,24017,24018,24019, -24020,24021,24022,24023,24024,24025,24026,24027,24028,24029,24030,24031, -24032,24033,24034,24035,24036,24037,24038,24039,24040,24041,24042,24043, -24044,24045,24046,24047,24048,24049,24050,24051,24052,24053,24054,24055, -24056,24057,24058,24059,24060,24061,24062,24063,24064,24065,24066,24067, -24068,24069,24070,24071,24072,24073,24074,24075,24076,24077,24078,24079, -24080,24081,24082,24083,24084,24085,24086,24087,24088,24089,24090,24091, -24092,24093,24094,24095,24096,24097,24098,24099,24100,24101,24102,24103, -24104,24105,24106,24107,24108,24109,24110,24111,24112,24113,24114,24115, -24116,24117,24118,24119,24120,24121,24122,24123,24124,24125,24126,24127, -24128,24129,24130,24131,24132,24133,24134,24135,24136,24137,24138,24139, -24140,24141,24142,24143,24144,24145,24146,24147,24148,24149,24150,24151, -24152,24153,24154,24155,24156,24157,24158,24159,24160,24161,24162,24163, -24164,24165,24166,24167,24168,24169,24170,24171,24172,24173,24174,24175, -24176,24177,24178,24179,24180,24181,24182,24183,24184,24185,24186,24187, -24188,24189,24190,24191,24192,24193,24194,24195,24196,24197,24198,24199, -24200,24201,24202,24203,24204,24205,24206,24207,24208,24209,24210,24211, -24212,24213,24214,24215,24216,24217,24218,24219,24220,24221,24222,24223, -24224,24225,24226,24227,24228,24229,24230,24231,24232,24233,24234,24235, -24236,24237,24238,24239,24240,24241,24242,24243,24244,24245,24246,24247, -24248,24249,24250,24251,24252,24253,24254,24255,24256,24257,24258,24259, -24260,24261,24262,24263,24264,24265,24266,24267,24268,24269,24270,24271, -24272,24273,24274,24275,24276,24277,24278,24279,24280,24281,24282,24283, -24284,24285,24286,24287,24288,24289,24290,24291,24292,24293,24294,24295, -24296,24297,24298,24299,24300,24301,24302,24303,24304,24305,24306,24307, -24308,24309,24310,24311,24312,24313,24314,24315,24316,24317,24318,24319, -24320,24321,24322,24323,24324,24325,24326,24327,24328,24329,24330,24331, -24332,24333,24334,24335,24336,24337,24338,24339,24340,24341,24342,24343, -24344,24345,24346,24347,24348,24349,24350,24351,24352,24353,24354,24355, -24356,24357,24358,24359,24360,24361,24362,24363,24364,24365,24366,24367, -24368,24369,24370,24371,24372,24373,24374,24375,24376,24377,24378,24379, -24380,24381,24382,24383,24384,24385,24386,24387,24388,24389,24390,24391, -24392,24393,24394,24395,24396,24397,24398,24399,24400,24401,24402,24403, -24404,24405,24406,24407,24408,24409,24410,24411,24412,24413,24414,24415, -24416,24417,24418,24419,24420,24421,24422,24423,24424,24425,24426,24427, -24428,24429,24430,24431,24432,24433,24434,24435,24436,24437,24438,24439, -24440,24441,24442,24443,24444,24445,24446,24447,24448,24449,24450,24451, -24452,24453,24454,24455,24456,24457,24458,24459,24460,24461,24462,24463, -24464,24465,24466,24467,24468,24469,24470,24471,24472,24473,24474,24475, -24476,24477,24478,24479,24480,24481,24482,24483,24484,24485,24486,24487, -24488,24489,24490,24491,24492,24493,24494,24495,24496,24497,24498,24499, -24500,24501,24502,24503,24504,24505,24506,24507,24508,24509,24510,24511, -24512,24513,24514,24515,24516,24517,24518,24519,24520,24521,24522,24523, -24524,24525,24526,24527,24528,24529,24530,24531,24532,24533,24534,24535, -24536,24537,24538,24539,24540,24541,24542,24543,24544,24545,24546,24547, -24548,24549,24550,24551,24552,24553,24554,24555,24556,24557,24558,24559, -24560,24561,24562,24563,24564,24565,24566,24567,24568,24569,24570,24571, -24572,24573,24574,24575,24576,24577,24578,24579,24580,24581,24582,24583, -24584,24585,24586,24587,24588,24589,24590,24591,24592,24593,24594,24595, -24596,24597,24598,24599,24600,24601,24602,24603,24604,24605,24606,24607, -24608,24609,24610,24611,24612,24613,24614,24615,24616,24617,24618,24619, -24620,24621,24622,24623,24624,24625,24626,24627,24628,24629,24630,24631, -24632,24633,24634,24635,24636,24637,24638,24639,24640,24641,24642,24643, -24644,24645,24646,24647,24648,24649,24650,24651,24652,24653,24654,24655, -24656,24657,24658,24659,24660,24661,24662,24663,24664,24665,24666,24667, -24668,24669,24670,24671,24672,24673,24674,24675,24676,24677,24678,24679, -24680,24681,24682,24683,24684,24685,24686,24687,24688,24689,24690,24691, -24692,24693,24694,24695,24696,24697,24698,24699,24700,24701,24702,24703, -24704,24705,24706,24707,24708,24709,24710,24711,24712,24713,24714,24715, -24716,24717,24718,24719,24720,24721,24722,24723,24724,24725,24726,24727, -24728,24729,24730,24731,24732,24733,24734,24735,24736,24737,24738,24739, -24740,24741,24742,24743,24744,24745,24746,24747,24748,24749,24750,24751, -24752,24753,24754,24755,24756,24757,24758,24759,24760,24761,24762,24763, -24764,24765,24766,24767,24768,24769,24770,24771,24772,24773,24774,24775, -24776,24777,24778,24779,24780,24781,24782,24783,24784,24785,24786,24787, -24788,24789,24790,24791,24792,24793,24794,24795,24796,24797,24798,24799, -24800,24801,24802,24803,24804,24805,24806,24807,24808,24809,24810,24811, -24812,24813,24814,24815,24816,24817,24818,24819,24820,24821,24822,24823, -24824,24825,24826,24827,24828,24829,24830,24831,24832,24833,24834,24835, -24836,24837,24838,24839,24840,24841,24842,24843,24844,24845,24846,24847, -24848,24849,24850,24851,24852,24853,24854,24855,24856,24857,24858,24859, -24860,24861,24862,24863,24864,24865,24866,24867,24868,24869,24870,24871, -24872,24873,24874,24875,24876,24877,24878,24879,24880,24881,24882,24883, -24884,24885,24886,24887,24888,24889,24890,24891,24892,24893,24894,24895, -24896,24897,24898,24899,24900,24901,24902,24903,24904,24905,24906,24907, -24908,24909,24910,24911,24912,24913,24914,24915,24916,24917,24918,24919, -24920,24921,24922,24923,24924,24925,24926,24927,24928,24929,24930,24931, -24932,24933,24934,24935,24936,24937,24938,24939,24940,24941,24942,24943, -24944,24945,24946,24947,24948,24949,24950,24951,24952,24953,24954,24955, -24956,24957,24958,24959,24960,24961,24962,24963,24964,24965,24966,24967, -24968,24969,24970,24971,24972,24973,24974,24975,24976,24977,24978,24979, -24980,24981,24982,24983,24984,24985,24986,24987,24988,24989,24990,24991, -24992,24993,24994,24995,24996,24997,24998,24999,25000,25001,25002,25003, -25004,25005,25006,25007,25008,25009,25010,25011,25012,25013,25014,25015, -25016,25017,25018,25019,25020,25021,25022,25023,25024,25025,25026,25027, -25028,25029,25030,25031,25032,25033,25034,25035,25036,25037,25038,25039, -25040,25041,25042,25043,25044,25045,25046,25047,25048,25049,25050,25051, -25052,25053,25054,25055,25056,25057,25058,25059,25060,25061,25062,25063, -25064,25065,25066,25067,25068,25069,25070,25071,25072,25073,25074,25075, -25076,25077,25078,25079,25080,25081,25082,25083,25084,25085,25086,25087, -25088,25089,25090,25091,25092,25093,25094,25095,25096,25097,25098,25099, -25100,25101,25102,25103,25104,25105,25106,25107,25108,25109,25110,25111, -25112,25113,25114,25115,25116,25117,25118,25119,25120,25121,25122,25123, -25124,25125,25126,25127,25128,25129,25130,25131,25132,25133,25134,25135, -25136,25137,25138,25139,25140,25141,25142,25143,25144,25145,25146,25147, -25148,25149,25150,25151,25152,25153,25154,25155,25156,25157,25158,25159, -25160,25161,25162,25163,25164,25165,25166,25167,25168,25169,25170,25171, -25172,25173,25174,25175,25176,25177,25178,25179,25180,25181,25182,25183, -25184,25185,25186,25187,25188,25189,25190,25191,25192,25193,25194,25195, -25196,25197,25198,25199,25200,25201,25202,25203,25204,25205,25206,25207, -25208,25209,25210,25211,25212,25213,25214,25215,25216,25217,25218,25219, -25220,25221,25222,25223,25224,25225,25226,25227,25228,25229,25230,25231, -25232,25233,25234,25235,25236,25237,25238,25239,25240,25241,25242,25243, -25244,25245,25246,25247,25248,25249,25250,25251,25252,25253,25254,25255, -25256,25257,25258,25259,25260,25261,25262,25263,25264,25265,25266,25267, -25268,25269,25270,25271,25272,25273,25274,25275,25276,25277,25278,25279, -25280,25281,25282,25283,25284,25285,25286,25287,25288,25289,25290,25291, -25292,25293,25294,25295,25296,25297,25298,25299,25300,25301,25302,25303, -25304,25305,25306,25307,25308,25309,25310,25311,25312,25313,25314,25315, -25316,25317,25318,25319,25320,25321,25322,25323,25324,25325,25326,25327, -25328,25329,25330,25331,25332,25333,25334,25335,25336,25337,25338,25339, -25340,25341,25342,25343,25344,25345,25346,25347,25348,25349,25350,25351, -25352,25353,25354,25355,25356,25357,25358,25359,25360,25361,25362,25363, -25364,25365,25366,25367,25368,25369,25370,25371,25372,25373,25374,25375, -25376,25377,25378,25379,25380,25381,25382,25383,25384,25385,25386,25387, -25388,25389,25390,25391,25392,25393,25394,25395,25396,25397,25398,25399, -25400,25401,25402,25403,25404,25405,25406,25407,25408,25409,25410,25411, -25412,25413,25414,25415,25416,25417,25418,25419,25420,25421,25422,25423, -25424,25425,25426,25427,25428,25429,25430,25431,25432,25433,25434,25435, -25436,25437,25438,25439,25440,25441,25442,25443,25444,25445,25446,25447, -25448,25449,25450,25451,25452,25453,25454,25455,25456,25457,25458,25459, -25460,25461,25462,25463,25464,25465,25466,25467,25468,25469,25470,25471, -25472,25473,25474,25475,25476,25477,25478,25479,25480,25481,25482,25483, -25484,25485,25486,25487,25488,25489,25490,25491,25492,25493,25494,25495, -25496,25497,25498,25499,25500,25501,25502,25503,25504,25505,25506,25507, -25508,25509,25510,25511,25512,25513,25514,25515,25516,25517,25518,25519, -25520,25521,25522,25523,25524,25525,25526,25527,25528,25529,25530,25531, -25532,25533,25534,25535,25536,25537,25538,25539,25540,25541,25542,25543, -25544,25545,25546,25547,25548,25549,25550,25551,25552,25553,25554,25555, -25556,25557,25558,25559,25560,25561,25562,25563,25564,25565,25566,25567, -25568,25569,25570,25571,25572,25573,25574,25575,25576,25577,25578,25579, -25580,25581,25582,25583,25584,25585,25586,25587,25588,25589,25590,25591, -25592,25593,25594,25595,25596,25597,25598,25599,25600,25601,25602,25603, -25604,25605,25606,25607,25608,25609,25610,25611,25612,25613,25614,25615, -25616,25617,25618,25619,25620,25621,25622,25623,25624,25625,25626,25627, -25628,25629,25630,25631,25632,25633,25634,25635,25636,25637,25638,25639, -25640,25641,25642,25643,25644,25645,25646,25647,25648,25649,25650,25651, -25652,25653,25654,25655,25656,25657,25658,25659,25660,25661,25662,25663, -25664,25665,25666,25667,25668,25669,25670,25671,25672,25673,25674,25675, -25676,25677,25678,25679,25680,25681,25682,25683,25684,25685,25686,25687, -25688,25689,25690,25691,25692,25693,25694,25695,25696,25697,25698,25699, -25700,25701,25702,25703,25704,25705,25706,25707,25708,25709,25710,25711, -25712,25713,25714,25715,25716,25717,25718,25719,25720,25721,25722,25723, -25724,25725,25726,25727,25728,25729,25730,25731,25732,25733,25734,25735, -25736,25737,25738,25739,25740,25741,25742,25743,25744,25745,25746,25747, -25748,25749,25750,25751,25752,25753,25754,25755,25756,25757,25758,25759, -25760,25761,25762,25763,25764,25765,25766,25767,25768,25769,25770,25771, -25772,25773,25774,25775,25776,25777,25778,25779,25780,25781,25782,25783, -25784,25785,25786,25787,25788,25789,25790,25791,25792,25793,25794,25795, -25796,25797,25798,25799,25800,25801,25802,25803,25804,25805,25806,25807, -25808,25809,25810,25811,25812,25813,25814,25815,25816,25817,25818,25819, -25820,25821,25822,25823,25824,25825,25826,25827,25828,25829,25830,25831, -25832,25833,25834,25835,25836,25837,25838,25839,25840,25841,25842,25843, -25844,25845,25846,25847,25848,25849,25850,25851,25852,25853,25854,25855, -25856,25857,25858,25859,25860,25861,25862,25863,25864,25865,25866,25867, -25868,25869,25870,25871,25872,25873,25874,25875,25876,25877,25878,25879, -25880,25881,25882,25883,25884,25885,25886,25887,25888,25889,25890,25891, -25892,25893,25894,25895,25896,25897,25898,25899,25900,25901,25902,25903, -25904,25905,25906,25907,25908,25909,25910,25911,25912,25913,25914,25915, -25916,25917,25918,25919,25920,25921,25922,25923,25924,25925,25926,25927, -25928,25929,25930,25931,25932,25933,25934,25935,25936,25937,25938,25939, -25940,25941,25942,25943,25944,25945,25946,25947,25948,25949,25950,25951, -25952,25953,25954,25955,25956,25957,25958,25959,25960,25961,25962,25963, -25964,25965,25966,25967,25968,25969,25970,25971,25972,25973,25974,25975, -25976,25977,25978,25979,25980,25981,25982,25983,25984,25985,25986,25987, -25988,25989,25990,25991,25992,25993,25994,25995,25996,25997,25998,25999, -26000,26001,26002,26003,26004,26005,26006,26007,26008,26009,26010,26011, -26012,26013,26014,26015,26016,26017,26018,26019,26020,26021,26022,26023, -26024,26025,26026,26027,26028,26029,26030,26031,26032,26033,26034,26035, -26036,26037,26038,26039,26040,26041,26042,26043,26044,26045,26046,26047, -26048,26049,26050,26051,26052,26053,26054,26055,26056,26057,26058,26059, -26060,26061,26062,26063,26064,26065,26066,26067,26068,26069,26070,26071, -26072,26073,26074,26075,26076,26077,26078,26079,26080,26081,26082,26083, -26084,26085,26086,26087,26088,26089,26090,26091,26092,26093,26094,26095, -26096,26097,26098,26099,26100,26101,26102,26103,26104,26105,26106,26107, -26108,26109,26110,26111,26112,26113,26114,26115,26116,26117,26118,26119, -26120,26121,26122,26123,26124,26125,26126,26127,26128,26129,26130,26131, -26132,26133,26134,26135,26136,26137,26138,26139,26140,26141,26142,26143, -26144,26145,26146,26147,26148,26149,26150,26151,26152,26153,26154,26155, -26156,26157,26158,26159,26160,26161,26162,26163,26164,26165,26166,26167, -26168,26169,26170,26171,26172,26173,26174,26175,26176,26177,26178,26179, -26180,26181,26182,26183,26184,26185,26186,26187,26188,26189,26190,26191, -26192,26193,26194,26195,26196,26197,26198,26199,26200,26201,26202,26203, -26204,26205,26206,26207,26208,26209,26210,26211,26212,26213,26214,26215, -26216,26217,26218,26219,26220,26221,26222,26223,26224,26225,26226,26227, -26228,26229,26230,26231,26232,26233,26234,26235,26236,26237,26238,26239, -26240,26241,26242,26243,26244,26245,26246,26247,26248,26249,26250,26251, -26252,26253,26254,26255,26256,26257,26258,26259,26260,26261,26262,26263, -26264,26265,26266,26267,26268,26269,26270,26271,26272,26273,26274,26275, -26276,26277,26278,26279,26280,26281,26282,26283,26284,26285,26286,26287, -26288,26289,26290,26291,26292,26293,26294,26295,26296,26297,26298,26299, -26300,26301,26302,26303,26304,26305,26306,26307,26308,26309,26310,26311, -26312,26313,26314,26315,26316,26317,26318,26319,26320,26321,26322,26323, -26324,26325,26326,26327,26328,26329,26330,26331,26332,26333,26334,26335, -26336,26337,26338,26339,26340,26341,26342,26343,26344,26345,26346,26347, -26348,26349,26350,26351,26352,26353,26354,26355,26356,26357,26358,26359, -26360,26361,26362,26363,26364,26365,26366,26367,26368,26369,26370,26371, -26372,26373,26374,26375,26376,26377,26378,26379,26380,26381,26382,26383, -26384,26385,26386,26387,26388,26389,26390,26391,26392,26393,26394,26395, -26396,26397,26398,26399,26400,26401,26402,26403,26404,26405,26406,26407, -26408,26409,26410,26411,26412,26413,26414,26415,26416,26417,26418,26419, -26420,26421,26422,26423,26424,26425,26426,26427,26428,26429,26430,26431, -26432,26433,26434,26435,26436,26437,26438,26439,26440,26441,26442,26443, -26444,26445,26446,26447,26448,26449,26450,26451,26452,26453,26454,26455, -26456,26457,26458,26459,26460,26461,26462,26463,26464,26465,26466,26467, -26468,26469,26470,26471,26472,26473,26474,26475,26476,26477,26478,26479, -26480,26481,26482,26483,26484,26485,26486,26487,26488,26489,26490,26491, -26492,26493,26494,26495,26496,26497,26498,26499,26500,26501,26502,26503, -26504,26505,26506,26507,26508,26509,26510,26511,26512,26513,26514,26515, -26516,26517,26518,26519,26520,26521,26522,26523,26524,26525,26526,26527, -26528,26529,26530,26531,26532,26533,26534,26535,26536,26537,26538,26539, -26540,26541,26542,26543,26544,26545,26546,26547,26548,26549,26550,26551, -26552,26553,26554,26555,26556,26557,26558,26559,26560,26561,26562,26563, -26564,26565,26566,26567,26568,26569,26570,26571,26572,26573,26574,26575, -26576,26577,26578,26579,26580,26581,26582,26583,26584,26585,26586,26587, -26588,26589,26590,26591,26592,26593,26594,26595,26596,26597,26598,26599, -26600,26601,26602,26603,26604,26605,26606,26607,26608,26609,26610,26611, -26612,26613,26614,26615,26616,26617,26618,26619,26620,26621,26622,26623, -26624,26625,26626,26627,26628,26629,26630,26631,26632,26633,26634,26635, -26636,26637,26638,26639,26640,26641,26642,26643,26644,26645,26646,26647, -26648,26649,26650,26651,26652,26653,26654,26655,26656,26657,26658,26659, -26660,26661,26662,26663,26664,26665,26666,26667,26668,26669,26670,26671, -26672,26673,26674,26675,26676,26677,26678,26679,26680,26681,26682,26683, -26684,26685,26686,26687,26688,26689,26690,26691,26692,26693,26694,26695, -26696,26697,26698,26699,26700,26701,26702,26703,26704,26705,26706,26707, -26708,26709,26710,26711,26712,26713,26714,26715,26716,26717,26718,26719, -26720,26721,26722,26723,26724,26725,26726,26727,26728,26729,26730,26731, -26732,26733,26734,26735,26736,26737,26738,26739,26740,26741,26742,26743, -26744,26745,26746,26747,26748,26749,26750,26751,26752,26753,26754,26755, -26756,26757,26758,26759,26760,26761,26762,26763,26764,26765,26766,26767, -26768,26769,26770,26771,26772,26773,26774,26775,26776,26777,26778,26779, -26780,26781,26782,26783,26784,26785,26786,26787,26788,26789,26790,26791, -26792,26793,26794,26795,26796,26797,26798,26799,26800,26801,26802,26803, -26804,26805,26806,26807,26808,26809,26810,26811,26812,26813,26814,26815, -26816,26817,26818,26819,26820,26821,26822,26823,26824,26825,26826,26827, -26828,26829,26830,26831,26832,26833,26834,26835,26836,26837,26838,26839, -26840,26841,26842,26843,26844,26845,26846,26847,26848,26849,26850,26851, -26852,26853,26854,26855,26856,26857,26858,26859,26860,26861,26862,26863, -26864,26865,26866,26867,26868,26869,26870,26871,26872,26873,26874,26875, -26876,26877,26878,26879,26880,26881,26882,26883,26884,26885,26886,26887, -26888,26889,26890,26891,26892,26893,26894,26895,26896,26897,26898,26899, -26900,26901,26902,26903,26904,26905,26906,26907,26908,26909,26910,26911, -26912,26913,26914,26915,26916,26917,26918,26919,26920,26921,26922,26923, -26924,26925,26926,26927,26928,26929,26930,26931,26932,26933,26934,26935, -26936,26937,26938,26939,26940,26941,26942,26943,26944,26945,26946,26947, -26948,26949,26950,26951,26952,26953,26954,26955,26956,26957,26958,26959, -26960,26961,26962,26963,26964,26965,26966,26967,26968,26969,26970,26971, -26972,26973,26974,26975,26976,26977,26978,26979,26980,26981,26982,26983, -26984,26985,26986,26987,26988,26989,26990,26991,26992,26993,26994,26995, -26996,26997,26998,26999,27000,27001,27002,27003,27004,27005,27006,27007, -27008,27009,27010,27011,27012,27013,27014,27015,27016,27017,27018,27019, -27020,27021,27022,27023,27024,27025,27026,27027,27028,27029,27030,27031, -27032,27033,27034,27035,27036,27037,27038,27039,27040,27041,27042,27043, -27044,27045,27046,27047,27048,27049,27050,27051,27052,27053,27054,27055, -27056,27057,27058,27059,27060,27061,27062,27063,27064,27065,27066,27067, -27068,27069,27070,27071,27072,27073,27074,27075,27076,27077,27078,27079, -27080,27081,27082,27083,27084,27085,27086,27087,27088,27089,27090,27091, -27092,27093,27094,27095,27096,27097,27098,27099,27100,27101,27102,27103, -27104,27105,27106,27107,27108,27109,27110,27111,27112,27113,27114,27115, -27116,27117,27118,27119,27120,27121,27122,27123,27124,27125,27126,27127, -27128,27129,27130,27131,27132,27133,27134,27135,27136,27137,27138,27139, -27140,27141,27142,27143,27144,27145,27146,27147,27148,27149,27150,27151, -27152,27153,27154,27155,27156,27157,27158,27159,27160,27161,27162,27163, -27164,27165,27166,27167,27168,27169,27170,27171,27172,27173,27174,27175, -27176,27177,27178,27179,27180,27181,27182,27183,27184,27185,27186,27187, -27188,27189,27190,27191,27192,27193,27194,27195,27196,27197,27198,27199, -27200,27201,27202,27203,27204,27205,27206,27207,27208,27209,27210,27211, -27212,27213,27214,27215,27216,27217,27218,27219,27220,27221,27222,27223, -27224,27225,27226,27227,27228,27229,27230,27231,27232,27233,27234,27235, -27236,27237,27238,27239,27240,27241,27242,27243,27244,27245,27246,27247, -27248,27249,27250,27251,27252,27253,27254,27255,27256,27257,27258,27259, -27260,27261,27262,27263,27264,27265,27266,27267,27268,27269,27270,27271, -27272,27273,27274,27275,27276,27277,27278,27279,27280,27281,27282,27283, -27284,27285,27286,27287,27288,27289,27290,27291,27292,27293,27294,27295, -27296,27297,27298,27299,27300,27301,27302,27303,27304,27305,27306,27307, -27308,27309,27310,27311,27312,27313,27314,27315,27316,27317,27318,27319, -27320,27321,27322,27323,27324,27325,27326,27327,27328,27329,27330,27331, -27332,27333,27334,27335,27336,27337,27338,27339,27340,27341,27342,27343, -27344,27345,27346,27347,27348,27349,27350,27351,27352,27353,27354,27355, -27356,27357,27358,27359,27360,27361,27362,27363,27364,27365,27366,27367, -27368,27369,27370,27371,27372,27373,27374,27375,27376,27377,27378,27379, -27380,27381,27382,27383,27384,27385,27386,27387,27388,27389,27390,27391, -27392,27393,27394,27395,27396,27397,27398,27399,27400,27401,27402,27403, -27404,27405,27406,27407,27408,27409,27410,27411,27412,27413,27414,27415, -27416,27417,27418,27419,27420,27421,27422,27423,27424,27425,27426,27427, -27428,27429,27430,27431,27432,27433,27434,27435,27436,27437,27438,27439, -27440,27441,27442,27443,27444,27445,27446,27447,27448,27449,27450,27451, -27452,27453,27454,27455,27456,27457,27458,27459,27460,27461,27462,27463, -27464,27465,27466,27467,27468,27469,27470,27471,27472,27473,27474,27475, -27476,27477,27478,27479,27480,27481,27482,27483,27484,27485,27486,27487, -27488,27489,27490,27491,27492,27493,27494,27495,27496,27497,27498,27499, -27500,27501,27502,27503,27504,27505,27506,27507,27508,27509,27510,27511, -27512,27513,27514,27515,27516,27517,27518,27519,27520,27521,27522,27523, -27524,27525,27526,27527,27528,27529,27530,27531,27532,27533,27534,27535, -27536,27537,27538,27539,27540,27541,27542,27543,27544,27545,27546,27547, -27548,27549,27550,27551,27552,27553,27554,27555,27556,27557,27558,27559, -27560,27561,27562,27563,27564,27565,27566,27567,27568,27569,27570,27571, -27572,27573,27574,27575,27576,27577,27578,27579,27580,27581,27582,27583, -27584,27585,27586,27587,27588,27589,27590,27591,27592,27593,27594,27595, -27596,27597,27598,27599,27600,27601,27602,27603,27604,27605,27606,27607, -27608,27609,27610,27611,27612,27613,27614,27615,27616,27617,27618,27619, -27620,27621,27622,27623,27624,27625,27626,27627,27628,27629,27630,27631, -27632,27633,27634,27635,27636,27637,27638,27639,27640,27641,27642,27643, -27644,27645,27646,27647,27648,27649,27650,27651,27652,27653,27654,27655, -27656,27657,27658,27659,27660,27661,27662,27663,27664,27665,27666,27667, -27668,27669,27670,27671,27672,27673,27674,27675,27676,27677,27678,27679, -27680,27681,27682,27683,27684,27685,27686,27687,27688,27689,27690,27691, -27692,27693,27694,27695,27696,27697,27698,27699,27700,27701,27702,27703, -27704,27705,27706,27707,27708,27709,27710,27711,27712,27713,27714,27715, -27716,27717,27718,27719,27720,27721,27722,27723,27724,27725,27726,27727, -27728,27729,27730,27731,27732,27733,27734,27735,27736,27737,27738,27739, -27740,27741,27742,27743,27744,27745,27746,27747,27748,27749,27750,27751, -27752,27753,27754,27755,27756,27757,27758,27759,27760,27761,27762,27763, -27764,27765,27766,27767,27768,27769,27770,27771,27772,27773,27774,27775, -27776,27777,27778,27779,27780,27781,27782,27783,27784,27785,27786,27787, -27788,27789,27790,27791,27792,27793,27794,27795,27796,27797,27798,27799, -27800,27801,27802,27803,27804,27805,27806,27807,27808,27809,27810,27811, -27812,27813,27814,27815,27816,27817,27818,27819,27820,27821,27822,27823, -27824,27825,27826,27827,27828,27829,27830,27831,27832,27833,27834,27835, -27836,27837,27838,27839,27840,27841,27842,27843,27844,27845,27846,27847, -27848,27849,27850,27851,27852,27853,27854,27855,27856,27857,27858,27859, -27860,27861,27862,27863,27864,27865,27866,27867,27868,27869,27870,27871, -27872,27873,27874,27875,27876,27877,27878,27879,27880,27881,27882,27883, -27884,27885,27886,27887,27888,27889,27890,27891,27892,27893,27894,27895, -27896,27897,27898,27899,27900,27901,27902,27903,27904,27905,27906,27907, -27908,27909,27910,27911,27912,27913,27914,27915,27916,27917,27918,27919, -27920,27921,27922,27923,27924,27925,27926,27927,27928,27929,27930,27931, -27932,27933,27934,27935,27936,27937,27938,27939,27940,27941,27942,27943, -27944,27945,27946,27947,27948,27949,27950,27951,27952,27953,27954,27955, -27956,27957,27958,27959,27960,27961,27962,27963,27964,27965,27966,27967, -27968,27969,27970,27971,27972,27973,27974,27975,27976,27977,27978,27979, -27980,27981,27982,27983,27984,27985,27986,27987,27988,27989,27990,27991, -27992,27993,27994,27995,27996,27997,27998,27999,28000,28001,28002,28003, -28004,28005,28006,28007,28008,28009,28010,28011,28012,28013,28014,28015, -28016,28017,28018,28019,28020,28021,28022,28023,28024,28025,28026,28027, -28028,28029,28030,28031,28032,28033,28034,28035,28036,28037,28038,28039, -28040,28041,28042,28043,28044,28045,28046,28047,28048,28049,28050,28051, -28052,28053,28054,28055,28056,28057,28058,28059,28060,28061,28062,28063, -28064,28065,28066,28067,28068,28069,28070,28071,28072,28073,28074,28075, -28076,28077,28078,28079,28080,28081,28082,28083,28084,28085,28086,28087, -28088,28089,28090,28091,28092,28093,28094,28095,28096,28097,28098,28099, -28100,28101,28102,28103,28104,28105,28106,28107,28108,28109,28110,28111, -28112,28113,28114,28115,28116,28117,28118,28119,28120,28121,28122,28123, -28124,28125,28126,28127,28128,28129,28130,28131,28132,28133,28134,28135, -28136,28137,28138,28139,28140,28141,28142,28143,28144,28145,28146,28147, -28148,28149,28150,28151,28152,28153,28154,28155,28156,28157,28158,28159, -28160,28161,28162,28163,28164,28165,28166,28167,28168,28169,28170,28171, -28172,28173,28174,28175,28176,28177,28178,28179,28180,28181,28182,28183, -28184,28185,28186,28187,28188,28189,28190,28191,28192,28193,28194,28195, -28196,28197,28198,28199,28200,28201,28202,28203,28204,28205,28206,28207, -28208,28209,28210,28211,28212,28213,28214,28215,28216,28217,28218,28219, -28220,28221,28222,28223,28224,28225,28226,28227,28228,28229,28230,28231, -28232,28233,28234,28235,28236,28237,28238,28239,28240,28241,28242,28243, -28244,28245,28246,28247,28248,28249,28250,28251,28252,28253,28254,28255, -28256,28257,28258,28259,28260,28261,28262,28263,28264,28265,28266,28267, -28268,28269,28270,28271,28272,28273,28274,28275,28276,28277,28278,28279, -28280,28281,28282,28283,28284,28285,28286,28287,28288,28289,28290,28291, -28292,28293,28294,28295,28296,28297,28298,28299,28300,28301,28302,28303, -28304,28305,28306,28307,28308,28309,28310,28311,28312,28313,28314,28315, -28316,28317,28318,28319,28320,28321,28322,28323,28324,28325,28326,28327, -28328,28329,28330,28331,28332,28333,28334,28335,28336,28337,28338,28339, -28340,28341,28342,28343,28344,28345,28346,28347,28348,28349,28350,28351, -28352,28353,28354,28355,28356,28357,28358,28359,28360,28361,28362,28363, -28364,28365,28366,28367,28368,28369,28370,28371,28372,28373,28374,28375, -28376,28377,28378,28379,28380,28381,28382,28383,28384,28385,28386,28387, -28388,28389,28390,28391,28392,28393,28394,28395,28396,28397,28398,28399, -28400,28401,28402,28403,28404,28405,28406,28407,28408,28409,28410,28411, -28412,28413,28414,28415,28416,28417,28418,28419,28420,28421,28422,28423, -28424,28425,28426,28427,28428,28429,28430,28431,28432,28433,28434,28435, -28436,28437,28438,28439,28440,28441,28442,28443,28444,28445,28446,28447, -28448,28449,28450,28451,28452,28453,28454,28455,28456,28457,28458,28459, -28460,28461,28462,28463,28464,28465,28466,28467,28468,28469,28470,28471, -28472,28473,28474,28475,28476,28477,28478,28479,28480,28481,28482,28483, -28484,28485,28486,28487,28488,28489,28490,28491,28492,28493,28494,28495, -28496,28497,28498,28499,28500,28501,28502,28503,28504,28505,28506,28507, -28508,28509,28510,28511,28512,28513,28514,28515,28516,28517,28518,28519, -28520,28521,28522,28523,28524,28525,28526,28527,28528,28529,28530,28531, -28532,28533,28534,28535,28536,28537,28538,28539,28540,28541,28542,28543, -28544,28545,28546,28547,28548,28549,28550,28551,28552,28553,28554,28555, -28556,28557,28558,28559,28560,28561,28562,28563,28564,28565,28566,28567, -28568,28569,28570,28571,28572,28573,28574,28575,28576,28577,28578,28579, -28580,28581,28582,28583,28584,28585,28586,28587,28588,28589,28590,28591, -28592,28593,28594,28595,28596,28597,28598,28599,28600,28601,28602,28603, -28604,28605,28606,28607,28608,28609,28610,28611,28612,28613,28614,28615, -28616,28617,28618,28619,28620,28621,28622,28623,28624,28625,28626,28627, -28628,28629,28630,28631,28632,28633,28634,28635,28636,28637,28638,28639, -28640,28641,28642,28643,28644,28645,28646,28647,28648,28649,28650,28651, -28652,28653,28654,28655,28656,28657,28658,28659,28660,28661,28662,28663, -28664,28665,28666,28667,28668,28669,28670,28671,28672,28673,28674,28675, -28676,28677,28678,28679,28680,28681,28682,28683,28684,28685,28686,28687, -28688,28689,28690,28691,28692,28693,28694,28695,28696,28697,28698,28699, -28700,28701,28702,28703,28704,28705,28706,28707,28708,28709,28710,28711, -28712,28713,28714,28715,28716,28717,28718,28719,28720,28721,28722,28723, -28724,28725,28726,28727,28728,28729,28730,28731,28732,28733,28734,28735, -28736,28737,28738,28739,28740,28741,28742,28743,28744,28745,28746,28747, -28748,28749,28750,28751,28752,28753,28754,28755,28756,28757,28758,28759, -28760,28761,28762,28763,28764,28765,28766,28767,28768,28769,28770,28771, -28772,28773,28774,28775,28776,28777,28778,28779,28780,28781,28782,28783, -28784,28785,28786,28787,28788,28789,28790,28791,28792,28793,28794,28795, -28796,28797,28798,28799,28800,28801,28802,28803,28804,28805,28806,28807, -28808,28809,28810,28811,28812,28813,28814,28815,28816,28817,28818,28819, -28820,28821,28822,28823,28824,28825,28826,28827,28828,28829,28830,28831, -28832,28833,28834,28835,28836,28837,28838,28839,28840,28841,28842,28843, -28844,28845,28846,28847,28848,28849,28850,28851,28852,28853,28854,28855, -28856,28857,28858,28859,28860,28861,28862,28863,28864,28865,28866,28867, -28868,28869,28870,28871,28872,28873,28874,28875,28876,28877,28878,28879, -28880,28881,28882,28883,28884,28885,28886,28887,28888,28889,28890,28891, -28892,28893,28894,28895,28896,28897,28898,28899,28900,28901,28902,28903, -28904,28905,28906,28907,28908,28909,28910,28911,28912,28913,28914,28915, -28916,28917,28918,28919,28920,28921,28922,28923,28924,28925,28926,28927, -28928,28929,28930,28931,28932,28933,28934,28935,28936,28937,28938,28939, -28940,28941,28942,28943,28944,28945,28946,28947,28948,28949,28950,28951, -28952,28953,28954,28955,28956,28957,28958,28959,28960,28961,28962,28963, -28964,28965,28966,28967,28968,28969,28970,28971,28972,28973,28974,28975, -28976,28977,28978,28979,28980,28981,28982,28983,28984,28985,28986,28987, -28988,28989,28990,28991,28992,28993,28994,28995,28996,28997,28998,28999, -29000,29001,29002,29003,29004,29005,29006,29007,29008,29009,29010,29011, -29012,29013,29014,29015,29016,29017,29018,29019,29020,29021,29022,29023, -29024,29025,29026,29027,29028,29029,29030,29031,29032,29033,29034,29035, -29036,29037,29038,29039,29040,29041,29042,29043,29044,29045,29046,29047, -29048,29049,29050,29051,29052,29053,29054,29055,29056,29057,29058,29059, -29060,29061,29062,29063,29064,29065,29066,29067,29068,29069,29070,29071, -29072,29073,29074,29075,29076,29077,29078,29079,29080,29081,29082,29083, -29084,29085,29086,29087,29088,29089,29090,29091,29092,29093,29094,29095, -29096,29097,29098,29099,29100,29101,29102,29103,29104,29105,29106,29107, -29108,29109,29110,29111,29112,29113,29114,29115,29116,29117,29118,29119, -29120,29121,29122,29123,29124,29125,29126,29127,29128,29129,29130,29131, -29132,29133,29134,29135,29136,29137,29138,29139,29140,29141,29142,29143, -29144,29145,29146,29147,29148,29149,29150,29151,29152,29153,29154,29155, -29156,29157,29158,29159,29160,29161,29162,29163,29164,29165,29166,29167, -29168,29169,29170,29171,29172,29173,29174,29175,29176,29177,29178,29179, -29180,29181,29182,29183,29184,29185,29186,29187,29188,29189,29190,29191, -29192,29193,29194,29195,29196,29197,29198,29199,29200,29201,29202,29203, -29204,29205,29206,29207,29208,29209,29210,29211,29212,29213,29214,29215, -29216,29217,29218,29219,29220,29221,29222,29223,29224,29225,29226,29227, -29228,29229,29230,29231,29232,29233,29234,29235,29236,29237,29238,29239, -29240,29241,29242,29243,29244,29245,29246,29247,29248,29249,29250,29251, -29252,29253,29254,29255,29256,29257,29258,29259,29260,29261,29262,29263, -29264,29265,29266,29267,29268,29269,29270,29271,29272,29273,29274,29275, -29276,29277,29278,29279,29280,29281,29282,29283,29284,29285,29286,29287, -29288,29289,29290,29291,29292,29293,29294,29295,29296,29297,29298,29299, -29300,29301,29302,29303,29304,29305,29306,29307,29308,29309,29310,29311, -29312,29313,29314,29315,29316,29317,29318,29319,29320,29321,29322,29323, -29324,29325,29326,29327,29328,29329,29330,29331,29332,29333,29334,29335, -29336,29337,29338,29339,29340,29341,29342,29343,29344,29345,29346,29347, -29348,29349,29350,29351,29352,29353,29354,29355,29356,29357,29358,29359, -29360,29361,29362,29363,29364,29365,29366,29367,29368,29369,29370,29371, -29372,29373,29374,29375,29376,29377,29378,29379,29380,29381,29382,29383, -29384,29385,29386,29387,29388,29389,29390,29391,29392,29393,29394,29395, -29396,29397,29398,29399,29400,29401,29402,29403,29404,29405,29406,29407, -29408,29409,29410,29411,29412,29413,29414,29415,29416,29417,29418,29419, -29420,29421,29422,29423,29424,29425,29426,29427,29428,29429,29430,29431, -29432,29433,29434,29435,29436,29437,29438,29439,29440,29441,29442,29443, -29444,29445,29446,29447,29448,29449,29450,29451,29452,29453,29454,29455, -29456,29457,29458,29459,29460,29461,29462,29463,29464,29465,29466,29467, -29468,29469,29470,29471,29472,29473,29474,29475,29476,29477,29478,29479, -29480,29481,29482,29483,29484,29485,29486,29487,29488,29489,29490,29491, -29492,29493,29494,29495,29496,29497,29498,29499,29500,29501,29502,29503, -29504,29505,29506,29507,29508,29509,29510,29511,29512,29513,29514,29515, -29516,29517,29518,29519,29520,29521,29522,29523,29524,29525,29526,29527, -29528,29529,29530,29531,29532,29533,29534,29535,29536,29537,29538,29539, -29540,29541,29542,29543,29544,29545,29546,29547,29548,29549,29550,29551, -29552,29553,29554,29555,29556,29557,29558,29559,29560,29561,29562,29563, -29564,29565,29566,29567,29568,29569,29570,29571,29572,29573,29574,29575, -29576,29577,29578,29579,29580,29581,29582,29583,29584,29585,29586,29587, -29588,29589,29590,29591,29592,29593,29594,29595,29596,29597,29598,29599, -29600,29601,29602,29603,29604,29605,29606,29607,29608,29609,29610,29611, -29612,29613,29614,29615,29616,29617,29618,29619,29620,29621,29622,29623, -29624,29625,29626,29627,29628,29629,29630,29631,29632,29633,29634,29635, -29636,29637,29638,29639,29640,29641,29642,29643,29644,29645,29646,29647, -29648,29649,29650,29651,29652,29653,29654,29655,29656,29657,29658,29659, -29660,29661,29662,29663,29664,29665,29666,29667,29668,29669,29670,29671, -29672,29673,29674,29675,29676,29677,29678,29679,29680,29681,29682,29683, -29684,29685,29686,29687,29688,29689,29690,29691,29692,29693,29694,29695, -29696,29697,29698,29699,29700,29701,29702,29703,29704,29705,29706,29707, -29708,29709,29710,29711,29712,29713,29714,29715,29716,29717,29718,29719, -29720,29721,29722,29723,29724,29725,29726,29727,29728,29729,29730,29731, -29732,29733,29734,29735,29736,29737,29738,29739,29740,29741,29742,29743, -29744,29745,29746,29747,29748,29749,29750,29751,29752,29753,29754,29755, -29756,29757,29758,29759,29760,29761,29762,29763,29764,29765,29766,29767, -29768,29769,29770,29771,29772,29773,29774,29775,29776,29777,29778,29779, -29780,29781,29782,29783,29784,29785,29786,29787,29788,29789,29790,29791, -29792,29793,29794,29795,29796,29797,29798,29799,29800,29801,29802,29803, -29804,29805,29806,29807,29808,29809,29810,29811,29812,29813,29814,29815, -29816,29817,29818,29819,29820,29821,29822,29823,29824,29825,29826,29827, -29828,29829,29830,29831,29832,29833,29834,29835,29836,29837,29838,29839, -29840,29841,29842,29843,29844,29845,29846,29847,29848,29849,29850,29851, -29852,29853,29854,29855,29856,29857,29858,29859,29860,29861,29862,29863, -29864,29865,29866,29867,29868,29869,29870,29871,29872,29873,29874,29875, -29876,29877,29878,29879,29880,29881,29882,29883,29884,29885,29886,29887, -29888,29889,29890,29891,29892,29893,29894,29895,29896,29897,29898,29899, -29900,29901,29902,29903,29904,29905,29906,29907,29908,29909,29910,29911, -29912,29913,29914,29915,29916,29917,29918,29919,29920,29921,29922,29923, -29924,29925,29926,29927,29928,29929,29930,29931,29932,29933,29934,29935, -29936,29937,29938,29939,29940,29941,29942,29943,29944,29945,29946,29947, -29948,29949,29950,29951,29952,29953,29954,29955,29956,29957,29958,29959, -29960,29961,29962,29963,29964,29965,29966,29967,29968,29969,29970,29971, -29972,29973,29974,29975,29976,29977,29978,29979,29980,29981,29982,29983, -29984,29985,29986,29987,29988,29989,29990,29991,29992,29993,29994,29995, -29996,29997,29998,29999,30000,30001,30002,30003,30004,30005,30006,30007, -30008,30009,30010,30011,30012,30013,30014,30015,30016,30017,30018,30019, -30020,30021,30022,30023,30024,30025,30026,30027,30028,30029,30030,30031, -30032,30033,30034,30035,30036,30037,30038,30039,30040,30041,30042,30043, -30044,30045,30046,30047,30048,30049,30050,30051,30052,30053,30054,30055, -30056,30057,30058,30059,30060,30061,30062,30063,30064,30065,30066,30067, -30068,30069,30070,30071,30072,30073,30074,30075,30076,30077,30078,30079, -30080,30081,30082,30083,30084,30085,30086,30087,30088,30089,30090,30091, -30092,30093,30094,30095,30096,30097,30098,30099,30100,30101,30102,30103, -30104,30105,30106,30107,30108,30109,30110,30111,30112,30113,30114,30115, -30116,30117,30118,30119,30120,30121,30122,30123,30124,30125,30126,30127, -30128,30129,30130,30131,30132,30133,30134,30135,30136,30137,30138,30139, -30140,30141,30142,30143,30144,30145,30146,30147,30148,30149,30150,30151, -30152,30153,30154,30155,30156,30157,30158,30159,30160,30161,30162,30163, -30164,30165,30166,30167,30168,30169,30170,30171,30172,30173,30174,30175, -30176,30177,30178,30179,30180,30181,30182,30183,30184,30185,30186,30187, -30188,30189,30190,30191,30192,30193,30194,30195,30196,30197,30198,30199, -30200,30201,30202,30203,30204,30205,30206,30207,30208,30209,30210,30211, -30212,30213,30214,30215,30216,30217,30218,30219,30220,30221,30222,30223, -30224,30225,30226,30227,30228,30229,30230,30231,30232,30233,30234,30235, -30236,30237,30238,30239,30240,30241,30242,30243,30244,30245,30246,30247, -30248,30249,30250,30251,30252,30253,30254,30255,30256,30257,30258,30259, -30260,30261,30262,30263,30264,30265,30266,30267,30268,30269,30270,30271, -30272,30273,30274,30275,30276,30277,30278,30279,30280,30281,30282,30283, -30284,30285,30286,30287,30288,30289,30290,30291,30292,30293,30294,30295, -30296,30297,30298,30299,30300,30301,30302,30303,30304,30305,30306,30307, -30308,30309,30310,30311,30312,30313,30314,30315,30316,30317,30318,30319, -30320,30321,30322,30323,30324,30325,30326,30327,30328,30329,30330,30331, -30332,30333,30334,30335,30336,30337,30338,30339,30340,30341,30342,30343, -30344,30345,30346,30347,30348,30349,30350,30351,30352,30353,30354,30355, -30356,30357,30358,30359,30360,30361,30362,30363,30364,30365,30366,30367, -30368,30369,30370,30371,30372,30373,30374,30375,30376,30377,30378,30379, -30380,30381,30382,30383,30384,30385,30386,30387,30388,30389,30390,30391, -30392,30393,30394,30395,30396,30397,30398,30399,30400,30401,30402,30403, -30404,30405,30406,30407,30408,30409,30410,30411,30412,30413,30414,30415, -30416,30417,30418,30419,30420,30421,30422,30423,30424,30425,30426,30427, -30428,30429,30430,30431,30432,30433,30434,30435,30436,30437,30438,30439, -30440,30441,30442,30443,30444,30445,30446,30447,30448,30449,30450,30451, -30452,30453,30454,30455,30456,30457,30458,30459,30460,30461,30462,30463, -30464,30465,30466,30467,30468,30469,30470,30471,30472,30473,30474,30475, -30476,30477,30478,30479,30480,30481,30482,30483,30484,30485,30486,30487, -30488,30489,30490,30491,30492,30493,30494,30495,30496,30497,30498,30499, -30500,30501,30502,30503,30504,30505,30506,30507,30508,30509,30510,30511, -30512,30513,30514,30515,30516,30517,30518,30519,30520,30521,30522,30523, -30524,30525,30526,30527,30528,30529,30530,30531,30532,30533,30534,30535, -30536,30537,30538,30539,30540,30541,30542,30543,30544,30545,30546,30547, -30548,30549,30550,30551,30552,30553,30554,30555,30556,30557,30558,30559, -30560,30561,30562,30563,30564,30565,30566,30567,30568,30569,30570,30571, -30572,30573,30574,30575,30576,30577,30578,30579,30580,30581,30582,30583, -30584,30585,30586,30587,30588,30589,30590,30591,30592,30593,30594,30595, -30596,30597,30598,30599,30600,30601,30602,30603,30604,30605,30606,30607, -30608,30609,30610,30611,30612,30613,30614,30615,30616,30617,30618,30619, -30620,30621,30622,30623,30624,30625,30626,30627,30628,30629,30630,30631, -30632,30633,30634,30635,30636,30637,30638,30639,30640,30641,30642,30643, -30644,30645,30646,30647,30648,30649,30650,30651,30652,30653,30654,30655, -30656,30657,30658,30659,30660,30661,30662,30663,30664,30665,30666,30667, -30668,30669,30670,30671,30672,30673,30674,30675,30676,30677,30678,30679, -30680,30681,30682,30683,30684,30685,30686,30687,30688,30689,30690,30691, -30692,30693,30694,30695,30696,30697,30698,30699,30700,30701,30702,30703, -30704,30705,30706,30707,30708,30709,30710,30711,30712,30713,30714,30715, -30716,30717,30718,30719,30720,30721,30722,30723,30724,30725,30726,30727, -30728,30729,30730,30731,30732,30733,30734,30735,30736,30737,30738,30739, -30740,30741,30742,30743,30744,30745,30746,30747,30748,30749,30750,30751, -30752,30753,30754,30755,30756,30757,30758,30759,30760,30761,30762,30763, -30764,30765,30766,30767,30768,30769,30770,30771,30772,30773,30774,30775, -30776,30777,30778,30779,30780,30781,30782,30783,30784,30785,30786,30787, -30788,30789,30790,30791,30792,30793,30794,30795,30796,30797,30798,30799, -30800,30801,30802,30803,30804,30805,30806,30807,30808,30809,30810,30811, -30812,30813,30814,30815,30816,30817,30818,30819,30820,30821,30822,30823, -30824,30825,30826,30827,30828,30829,30830,30831,30832,30833,30834,30835, -30836,30837,30838,30839,30840,30841,30842,30843,30844,30845,30846,30847, -30848,30849,30850,30851,30852,30853,30854,30855,30856,30857,30858,30859, -30860,30861,30862,30863,30864,30865,30866,30867,30868,30869,30870,30871, -30872,30873,30874,30875,30876,30877,30878,30879,30880,30881,30882,30883, -30884,30885,30886,30887,30888,30889,30890,30891,30892,30893,30894,30895, -30896,30897,30898,30899,30900,30901,30902,30903,30904,30905,30906,30907, -30908,30909,30910,30911,30912,30913,30914,30915,30916,30917,30918,30919, -30920,30921,30922,30923,30924,30925,30926,30927,30928,30929,30930,30931, -30932,30933,30934,30935,30936,30937,30938,30939,30940,30941,30942,30943, -30944,30945,30946,30947,30948,30949,30950,30951,30952,30953,30954,30955, -30956,30957,30958,30959,30960,30961,30962,30963,30964,30965,30966,30967, -30968,30969,30970,30971,30972,30973,30974,30975,30976,30977,30978,30979, -30980,30981,30982,30983,30984,30985,30986,30987,30988,30989,30990,30991, -30992,30993,30994,30995,30996,30997,30998,30999,31000,31001,31002,31003, -31004,31005,31006,31007,31008,31009,31010,31011,31012,31013,31014,31015, -31016,31017,31018,31019,31020,31021,31022,31023,31024,31025,31026,31027, -31028,31029,31030,31031,31032,31033,31034,31035,31036,31037,31038,31039, -31040,31041,31042,31043,31044,31045,31046,31047,31048,31049,31050,31051, -31052,31053,31054,31055,31056,31057,31058,31059,31060,31061,31062,31063, -31064,31065,31066,31067,31068,31069,31070,31071,31072,31073,31074,31075, -31076,31077,31078,31079,31080,31081,31082,31083,31084,31085,31086,31087, -31088,31089,31090,31091,31092,31093,31094,31095,31096,31097,31098,31099, -31100,31101,31102,31103,31104,31105,31106,31107,31108,31109,31110,31111, -31112,31113,31114,31115,31116,31117,31118,31119,31120,31121,31122,31123, -31124,31125,31126,31127,31128,31129,31130,31131,31132,31133,31134,31135, -31136,31137,31138,31139,31140,31141,31142,31143,31144,31145,31146,31147, -31148,31149,31150,31151,31152,31153,31154,31155,31156,31157,31158,31159, -31160,31161,31162,31163,31164,31165,31166,31167,31168,31169,31170,31171, -31172,31173,31174,31175,31176,31177,31178,31179,31180,31181,31182,31183, -31184,31185,31186,31187,31188,31189,31190,31191,31192,31193,31194,31195, -31196,31197,31198,31199,31200,31201,31202,31203,31204,31205,31206,31207, -31208,31209,31210,31211,31212,31213,31214,31215,31216,31217,31218,31219, -31220,31221,31222,31223,31224,31225,31226,31227,31228,31229,31230,31231, -31232,31233,31234,31235,31236,31237,31238,31239,31240,31241,31242,31243, -31244,31245,31246,31247,31248,31249,31250,31251,31252,31253,31254,31255, -31256,31257,31258,31259,31260,31261,31262,31263,31264,31265,31266,31267, -31268,31269,31270,31271,31272,31273,31274,31275,31276,31277,31278,31279, -31280,31281,31282,31283,31284,31285,31286,31287,31288,31289,31290,31291, -31292,31293,31294,31295,31296,31297,31298,31299,31300,31301,31302,31303, -31304,31305,31306,31307,31308,31309,31310,31311,31312,31313,31314,31315, -31316,31317,31318,31319,31320,31321,31322,31323,31324,31325,31326,31327, -31328,31329,31330,31331,31332,31333,31334,31335,31336,31337,31338,31339, -31340,31341,31342,31343,31344,31345,31346,31347,31348,31349,31350,31351, -31352,31353,31354,31355,31356,31357,31358,31359,31360,31361,31362,31363, -31364,31365,31366,31367,31368,31369,31370,31371,31372,31373,31374,31375, -31376,31377,31378,31379,31380,31381,31382,31383,31384,31385,31386,31387, -31388,31389,31390,31391,31392,31393,31394,31395,31396,31397,31398,31399, -31400,31401,31402,31403,31404,31405,31406,31407,31408,31409,31410,31411, -31412,31413,31414,31415,31416,31417,31418,31419,31420,31421,31422,31423, -31424,31425,31426,31427,31428,31429,31430,31431,31432,31433,31434,31435, -31436,31437,31438,31439,31440,31441,31442,31443,31444,31445,31446,31447, -31448,31449,31450,31451,31452,31453,31454,31455,31456,31457,31458,31459, -31460,31461,31462,31463,31464,31465,31466,31467,31468,31469,31470,31471, -31472,31473,31474,31475,31476,31477,31478,31479,31480,31481,31482,31483, -31484,31485,31486,31487,31488,31489,31490,31491,31492,31493,31494,31495, -31496,31497,31498,31499,31500,31501,31502,31503,31504,31505,31506,31507, -31508,31509,31510,31511,31512,31513,31514,31515,31516,31517,31518,31519, -31520,31521,31522,31523,31524,31525,31526,31527,31528,31529,31530,31531, -31532,31533,31534,31535,31536,31537,31538,31539,31540,31541,31542,31543, -31544,31545,31546,31547,31548,31549,31550,31551,31552,31553,31554,31555, -31556,31557,31558,31559,31560,31561,31562,31563,31564,31565,31566,31567, -31568,31569,31570,31571,31572,31573,31574,31575,31576,31577,31578,31579, -31580,31581,31582,31583,31584,31585,31586,31587,31588,31589,31590,31591, -31592,31593,31594,31595,31596,31597,31598,31599,31600,31601,31602,31603, -31604,31605,31606,31607,31608,31609,31610,31611,31612,31613,31614,31615, -31616,31617,31618,31619,31620,31621,31622,31623,31624,31625,31626,31627, -31628,31629,31630,31631,31632,31633,31634,31635,31636,31637,31638,31639, -31640,31641,31642,31643,31644,31645,31646,31647,31648,31649,31650,31651, -31652,31653,31654,31655,31656,31657,31658,31659,31660,31661,31662,31663, -31664,31665,31666,31667,31668,31669,31670,31671,31672,31673,31674,31675, -31676,31677,31678,31679,31680,31681,31682,31683,31684,31685,31686,31687, -31688,31689,31690,31691,31692,31693,31694,31695,31696,31697,31698,31699, -31700,31701,31702,31703,31704,31705,31706,31707,31708,31709,31710,31711, -31712,31713,31714,31715,31716,31717,31718,31719,31720,31721,31722,31723, -31724,31725,31726,31727,31728,31729,31730,31731,31732,31733,31734,31735, -31736,31737,31738,31739,31740,31741,31742,31743,31744,31745,31746,31747, -31748,31749,31750,31751,31752,31753,31754,31755,31756,31757,31758,31759, -31760,31761,31762,31763,31764,31765,31766,31767,31768,31769,31770,31771, -31772,31773,31774,31775,31776,31777,31778,31779,31780,31781,31782,31783, -31784,31785,31786,31787,31788,31789,31790,31791,31792,31793,31794,31795, -31796,31797,31798,31799,31800,31801,31802,31803,31804,31805,31806,31807, -31808,31809,31810,31811,31812,31813,31814,31815,31816,31817,31818,31819, -31820,31821,31822,31823,31824,31825,31826,31827,31828,31829,31830,31831, -31832,31833,31834,31835,31836,31837,31838,31839,31840,31841,31842,31843, -31844,31845,31846,31847,31848,31849,31850,31851,31852,31853,31854,31855, -31856,31857,31858,31859,31860,31861,31862,31863,31864,31865,31866,31867, -31868,31869,31870,31871,31872,31873,31874,31875,31876,31877,31878,31879, -31880,31881,31882,31883,31884,31885,31886,31887,31888,31889,31890,31891, -31892,31893,31894,31895,31896,31897,31898,31899,31900,31901,31902,31903, -31904,31905,31906,31907,31908,31909,31910,31911,31912,31913,31914,31915, -31916,31917,31918,31919,31920,31921,31922,31923,31924,31925,31926,31927, -31928,31929,31930,31931,31932,31933,31934,31935,31936,31937,31938,31939, -31940,31941,31942,31943,31944,31945,31946,31947,31948,31949,31950,31951, -31952,31953,31954,31955,31956,31957,31958,31959,31960,31961,31962,31963, -31964,31965,31966,31967,31968,31969,31970,31971,31972,31973,31974,31975, -31976,31977,31978,31979,31980,31981,31982,31983,31984,31985,31986,31987, -31988,31989,31990,31991,31992,31993,31994,31995,31996,31997,31998,31999, -32000,32001,32002,32003,32004,32005,32006,32007,32008,32009,32010,32011, -32012,32013,32014,32015,32016,32017,32018,32019,32020,32021,32022,32023, -32024,32025,32026,32027,32028,32029,32030,32031,32032,32033,32034,32035, -32036,32037,32038,32039,32040,32041,32042,32043,32044,32045,32046,32047, -32048,32049,32050,32051,32052,32053,32054,32055,32056,32057,32058,32059, -32060,32061,32062,32063,32064,32065,32066,32067,32068,32069,32070,32071, -32072,32073,32074,32075,32076,32077,32078,32079,32080,32081,32082,32083, -32084,32085,32086,32087,32088,32089,32090,32091,32092,32093,32094,32095, -32096,32097,32098,32099,32100,32101,32102,32103,32104,32105,32106,32107, -32108,32109,32110,32111,32112,32113,32114,32115,32116,32117,32118,32119, -32120,32121,32122,32123,32124,32125,32126,32127,32128,32129,32130,32131, -32132,32133,32134,32135,32136,32137,32138,32139,32140,32141,32142,32143, -32144,32145,32146,32147,32148,32149,32150,32151,32152,32153,32154,32155, -32156,32157,32158,32159,32160,32161,32162,32163,32164,32165,32166,32167, -32168,32169,32170,32171,32172,32173,32174,32175,32176,32177,32178,32179, -32180,32181,32182,32183,32184,32185,32186,32187,32188,32189,32190,32191, -32192,32193,32194,32195,32196,32197,32198,32199,32200,32201,32202,32203, -32204,32205,32206,32207,32208,32209,32210,32211,32212,32213,32214,32215, -32216,32217,32218,32219,32220,32221,32222,32223,32224,32225,32226,32227, -32228,32229,32230,32231,32232,32233,32234,32235,32236,32237,32238,32239, -32240,32241,32242,32243,32244,32245,32246,32247,32248,32249,32250,32251, -32252,32253,32254,32255,32256,32257,32258,32259,32260,32261,32262,32263, -32264,32265,32266,32267,32268,32269,32270,32271,32272,32273,32274,32275, -32276,32277,32278,32279,32280,32281,32282,32283,32284,32285,32286,32287, -32288,32289,32290,32291,32292,32293,32294,32295,32296,32297,32298,32299, -32300,32301,32302,32303,32304,32305,32306,32307,32308,32309,32310,32311, -32312,32313,32314,32315,32316,32317,32318,32319,32320,32321,32322,32323, -32324,32325,32326,32327,32328,32329,32330,32331,32332,32333,32334,32335, -32336,32337,32338,32339,32340,32341,32342,32343,32344,32345,32346,32347, -32348,32349,32350,32351,32352,32353,32354,32355,32356,32357,32358,32359, -32360,32361,32362,32363,32364,32365,32366,32367,32368,32369,32370,32371, -32372,32373,32374,32375,32376,32377,32378,32379,32380,32381,32382,32383, -32384,32385,32386,32387,32388,32389,32390,32391,32392,32393,32394,32395, -32396,32397,32398,32399,32400,32401,32402,32403,32404,32405,32406,32407, -32408,32409,32410,32411,32412,32413,32414,32415,32416,32417,32418,32419, -32420,32421,32422,32423,32424,32425,32426,32427,32428,32429,32430,32431, -32432,32433,32434,32435,32436,32437,32438,32439,32440,32441,32442,32443, -32444,32445,32446,32447,32448,32449,32450,32451,32452,32453,32454,32455, -32456,32457,32458,32459,32460,32461,32462,32463,32464,32465,32466,32467, -32468,32469,32470,32471,32472,32473,32474,32475,32476,32477,32478,32479, -32480,32481,32482,32483,32484,32485,32486,32487,32488,32489,32490,32491, -32492,32493,32494,32495,32496,32497,32498,32499,32500,32501,32502,32503, -32504,32505,32506,32507,32508,32509,32510,32511,32512,32513,32514,32515, -32516,32517,32518,32519,32520,32521,32522,32523,32524,32525,32526,32527, -32528,32529,32530,32531,32532,32533,32534,32535,32536,32537,32538,32539, -32540,32541,32542,32543,32544,32545,32546,32547,32548,32549,32550,32551, -32552,32553,32554,32555,32556,32557,32558,32559,32560,32561,32562,32563, -32564,32565,32566,32567,32568,32569,32570,32571,32572,32573,32574,32575, -32576,32577,32578,32579,32580,32581,32582,32583,32584,32585,32586,32587, -32588,32589,32590,32591,32592,32593,32594,32595,32596,32597,32598,32599, -32600,32601,32602,32603,32604,32605,32606,32607,32608,32609,32610,32611, -32612,32613,32614,32615,32616,32617,32618,32619,32620,32621,32622,32623, -32624,32625,32626,32627,32628,32629,32630,32631,32632,32633,32634,32635, -32636,32637,32638,32639,32640,32641,32642,32643,32644,32645,32646,32647, -32648,32649,32650,32651,32652,32653,32654,32655,32656,32657,32658,32659, -32660,32661,32662,32663,32664,32665,32666,32667,32668,32669,32670,32671, -32672,32673,32674,32675,32676,32677,32678,32679,32680,32681,32682,32683, -32684,32685,32686,32687,32688,32689,32690,32691,32692,32693,32694,32695, -32696,32697,32698,32699,32700,32701,32702,32703,32704,32705,32706,32707, -32708,32709,32710,32711,32712,32713,32714,32715,32716,32717,32718,32719, -32720,32721,32722,32723,32724,32725,32726,32727,32728,32729,32730,32731, -32732,32733,32734,32735,32736,32737,32738,32739,32740,32741,32742,32743, -32744,32745,32746,32747,32748,32749,32750,32751,32752,32753,32754,32755, -32756,32757,32758,32759,32760,32761,32762,32763,32764,32765,32766,32767, -32768L,32769L,32770L,32771L,32772L,32773L,32774L,32775L,32776L,32777L, -32778L,32779L,32780L,32781L,32782L,32783L,32784L,32785L,32786L,32787L, -32788L,32789L,32790L,32791L,32792L,32793L,32794L,32795L,32796L,32797L, -32798L,32799L,32800L,32801L,32802L,32803L,32804L,32805L,32806L,32807L, -32808L,32809L,32810L,32811L,32812L,32813L,32814L,32815L,32816L,32817L, -32818L,32819L,32820L,32821L,32822L,32823L,32824L,32825L,32826L,32827L, -32828L,32829L,32830L,32831L,32832L,32833L,32834L,32835L,32836L,32837L, -32838L,32839L,32840L,32841L,32842L,32843L,32844L,32845L,32846L,32847L, -32848L,32849L,32850L,32851L,32852L,32853L,32854L,32855L,32856L,32857L, -32858L,32859L,32860L,32861L,32862L,32863L,32864L,32865L,32866L,32867L, -32868L,32869L,32870L,32871L,32872L,32873L,32874L,32875L,32876L,32877L, -32878L,32879L,32880L,32881L,32882L,32883L,32884L,32885L,32886L,32887L, -32888L,32889L,32890L,32891L,32892L,32893L,32894L,32895L,32896L,32897L, -32898L,32899L,32900L,32901L,32902L,32903L,32904L,32905L,32906L,32907L, -32908L,32909L,32910L,32911L,32912L,32913L,32914L,32915L,32916L,32917L, -32918L,32919L,32920L,32921L,32922L,32923L,32924L,32925L,32926L,32927L, -32928L,32929L,32930L,32931L,32932L,32933L,32934L,32935L,32936L,32937L, -32938L,32939L,32940L,32941L,32942L,32943L,32944L,32945L,32946L,32947L, -32948L,32949L,32950L,32951L,32952L,32953L,32954L,32955L,32956L,32957L, -32958L,32959L,32960L,32961L,32962L,32963L,32964L,32965L,32966L,32967L, -32968L,32969L,32970L,32971L,32972L,32973L,32974L,32975L,32976L,32977L, -32978L,32979L,32980L,32981L,32982L,32983L,32984L,32985L,32986L,32987L, -32988L,32989L,32990L,32991L,32992L,32993L,32994L,32995L,32996L,32997L, -32998L,32999L,33000L,33001L,33002L,33003L,33004L,33005L,33006L,33007L, -33008L,33009L,33010L,33011L,33012L,33013L,33014L,33015L,33016L,33017L, -33018L,33019L,33020L,33021L,33022L,33023L,33024L,33025L,33026L,33027L, -33028L,33029L,33030L,33031L,33032L,33033L,33034L,33035L,33036L,33037L, -33038L,33039L,33040L,33041L,33042L,33043L,33044L,33045L,33046L,33047L, -33048L,33049L,33050L,33051L,33052L,33053L,33054L,33055L,33056L,33057L, -33058L,33059L,33060L,33061L,33062L,33063L,33064L,33065L,33066L,33067L, -33068L,33069L,33070L,33071L,33072L,33073L,33074L,33075L,33076L,33077L, -33078L,33079L,33080L,33081L,33082L,33083L,33084L,33085L,33086L,33087L, -33088L,33089L,33090L,33091L,33092L,33093L,33094L,33095L,33096L,33097L, -33098L,33099L,33100L,33101L,33102L,33103L,33104L,33105L,33106L,33107L, -33108L,33109L,33110L,33111L,33112L,33113L,33114L,33115L,33116L,33117L, -33118L,33119L,33120L,33121L,33122L,33123L,33124L,33125L,33126L,33127L, -33128L,33129L,33130L,33131L,33132L,33133L,33134L,33135L,33136L,33137L, -33138L,33139L,33140L,33141L,33142L,33143L,33144L,33145L,33146L,33147L, -33148L,33149L,33150L,33151L,33152L,33153L,33154L,33155L,33156L,33157L, -33158L,33159L,33160L,33161L,33162L,33163L,33164L,33165L,33166L,33167L, -33168L,33169L,33170L,33171L,33172L,33173L,33174L,33175L,33176L,33177L, -33178L,33179L,33180L,33181L,33182L,33183L,33184L,33185L,33186L,33187L, -33188L,33189L,33190L,33191L,33192L,33193L,33194L,33195L,33196L,33197L, -33198L,33199L,33200L,33201L,33202L,33203L,33204L,33205L,33206L,33207L, -33208L,33209L,33210L,33211L,33212L,33213L,33214L,33215L,33216L,33217L, -33218L,33219L,33220L,33221L,33222L,33223L,33224L,33225L,33226L,33227L, -33228L,33229L,33230L,33231L,33232L,33233L,33234L,33235L,33236L,33237L, -33238L,33239L,33240L,33241L,33242L,33243L,33244L,33245L,33246L,33247L, -33248L,33249L,33250L,33251L,33252L,33253L,33254L,33255L,33256L,33257L, -33258L,33259L,33260L,33261L,33262L,33263L,33264L,33265L,33266L,33267L, -33268L,33269L,33270L,33271L,33272L,33273L,33274L,33275L,33276L,33277L, -33278L,33279L,33280L,33281L,33282L,33283L,33284L,33285L,33286L,33287L, -33288L,33289L,33290L,33291L,33292L,33293L,33294L,33295L,33296L,33297L, -33298L,33299L,33300L,33301L,33302L,33303L,33304L,33305L,33306L,33307L, -33308L,33309L,33310L,33311L,33312L,33313L,33314L,33315L,33316L,33317L, -33318L,33319L,33320L,33321L,33322L,33323L,33324L,33325L,33326L,33327L, -33328L,33329L,33330L,33331L,33332L,33333L,33334L,33335L,33336L,33337L, -33338L,33339L,33340L,33341L,33342L,33343L,33344L,33345L,33346L,33347L, -33348L,33349L,33350L,33351L,33352L,33353L,33354L,33355L,33356L,33357L, -33358L,33359L,33360L,33361L,33362L,33363L,33364L,33365L,33366L,33367L, -33368L,33369L,33370L,33371L,33372L,33373L,33374L,33375L,33376L,33377L, -33378L,33379L,33380L,33381L,33382L,33383L,33384L,33385L,33386L,33387L, -33388L,33389L,33390L,33391L,33392L,33393L,33394L,33395L,33396L,33397L, -33398L,33399L,33400L,33401L,33402L,33403L,33404L,33405L,33406L,33407L, -33408L,33409L,33410L,33411L,33412L,33413L,33414L,33415L,33416L,33417L, -33418L,33419L,33420L,33421L,33422L,33423L,33424L,33425L,33426L,33427L, -33428L,33429L,33430L,33431L,33432L,33433L,33434L,33435L,33436L,33437L, -33438L,33439L,33440L,33441L,33442L,33443L,33444L,33445L,33446L,33447L, -33448L,33449L,33450L,33451L,33452L,33453L,33454L,33455L,33456L,33457L, -33458L,33459L,33460L,33461L,33462L,33463L,33464L,33465L,33466L,33467L, -33468L,33469L,33470L,33471L,33472L,33473L,33474L,33475L,33476L,33477L, -33478L,33479L,33480L,33481L,33482L,33483L,33484L,33485L,33486L,33487L, -33488L,33489L,33490L,33491L,33492L,33493L,33494L,33495L,33496L,33497L, -33498L,33499L,33500L,33501L,33502L,33503L,33504L,33505L,33506L,33507L, -33508L,33509L,33510L,33511L,33512L,33513L,33514L,33515L,33516L,33517L, -33518L,33519L,33520L,33521L,33522L,33523L,33524L,33525L,33526L,33527L, -33528L,33529L,33530L,33531L,33532L,33533L,33534L,33535L,33536L,33537L, -33538L,33539L,33540L,33541L,33542L,33543L,33544L,33545L,33546L,33547L, -33548L,33549L,33550L,33551L,33552L,33553L,33554L,33555L,33556L,33557L, -33558L,33559L,33560L,33561L,33562L,33563L,33564L,33565L,33566L,33567L, -33568L,33569L,33570L,33571L,33572L,33573L,33574L,33575L,33576L,33577L, -33578L,33579L,33580L,33581L,33582L,33583L,33584L,33585L,33586L,33587L, -33588L,33589L,33590L,33591L,33592L,33593L,33594L,33595L,33596L,33597L, -33598L,33599L,33600L,33601L,33602L,33603L,33604L,33605L,33606L,33607L, -33608L,33609L,33610L,33611L,33612L,33613L,33614L,33615L,33616L,33617L, -33618L,33619L,33620L,33621L,33622L,33623L,33624L,33625L,33626L,33627L, -33628L,33629L,33630L,33631L,33632L,33633L,33634L,33635L,33636L,33637L, -33638L,33639L,33640L,33641L,33642L,33643L,33644L,33645L,33646L,33647L, -33648L,33649L,33650L,33651L,33652L,33653L,33654L,33655L,33656L,33657L, -33658L,33659L,33660L,33661L,33662L,33663L,33664L,33665L,33666L,33667L, -33668L,33669L,33670L,33671L,33672L,33673L,33674L,33675L,33676L,33677L, -33678L,33679L,33680L,33681L,33682L,33683L,33684L,33685L,33686L,33687L, -33688L,33689L,33690L,33691L,33692L,33693L,33694L,33695L,33696L,33697L, -33698L,33699L,33700L,33701L,33702L,33703L,33704L,33705L,33706L,33707L, -33708L,33709L,33710L,33711L,33712L,33713L,33714L,33715L,33716L,33717L, -33718L,33719L,33720L,33721L,33722L,33723L,33724L,33725L,33726L,33727L, -33728L,33729L,33730L,33731L,33732L,33733L,33734L,33735L,33736L,33737L, -33738L,33739L,33740L,33741L,33742L,33743L,33744L,33745L,33746L,33747L, -33748L,33749L,33750L,33751L,33752L,33753L,33754L,33755L,33756L,33757L, -33758L,33759L,33760L,33761L,33762L,33763L,33764L,33765L,33766L,33767L, -33768L,33769L,33770L,33771L,33772L,33773L,33774L,33775L,33776L,33777L, -33778L,33779L,33780L,33781L,33782L,33783L,33784L,33785L,33786L,33787L, -33788L,33789L,33790L,33791L,33792L,33793L,33794L,33795L,33796L,33797L, -33798L,33799L,33800L,33801L,33802L,33803L,33804L,33805L,33806L,33807L, -33808L,33809L,33810L,33811L,33812L,33813L,33814L,33815L,33816L,33817L, -33818L,33819L,33820L,33821L,33822L,33823L,33824L,33825L,33826L,33827L, -33828L,33829L,33830L,33831L,33832L,33833L,33834L,33835L,33836L,33837L, -33838L,33839L,33840L,33841L,33842L,33843L,33844L,33845L,33846L,33847L, -33848L,33849L,33850L,33851L,33852L,33853L,33854L,33855L,33856L,33857L, -33858L,33859L,33860L,33861L,33862L,33863L,33864L,33865L,33866L,33867L, -33868L,33869L,33870L,33871L,33872L,33873L,33874L,33875L,33876L,33877L, -33878L,33879L,33880L,33881L,33882L,33883L,33884L,33885L,33886L,33887L, -33888L,33889L,33890L,33891L,33892L,33893L,33894L,33895L,33896L,33897L, -33898L,33899L,33900L,33901L,33902L,33903L,33904L,33905L,33906L,33907L, -33908L,33909L,33910L,33911L,33912L,33913L,33914L,33915L,33916L,33917L, -33918L,33919L,33920L,33921L,33922L,33923L,33924L,33925L,33926L,33927L, -33928L,33929L,33930L,33931L,33932L,33933L,33934L,33935L,33936L,33937L, -33938L,33939L,33940L,33941L,33942L,33943L,33944L,33945L,33946L,33947L, -33948L,33949L,33950L,33951L,33952L,33953L,33954L,33955L,33956L,33957L, -33958L,33959L,33960L,33961L,33962L,33963L,33964L,33965L,33966L,33967L, -33968L,33969L,33970L,33971L,33972L,33973L,33974L,33975L,33976L,33977L, -33978L,33979L,33980L,33981L,33982L,33983L,33984L,33985L,33986L,33987L, -33988L,33989L,33990L,33991L,33992L,33993L,33994L,33995L,33996L,33997L, -33998L,33999L,34000L,34001L,34002L,34003L,34004L,34005L,34006L,34007L, -34008L,34009L,34010L,34011L,34012L,34013L,34014L,34015L,34016L,34017L, -34018L,34019L,34020L,34021L,34022L,34023L,34024L,34025L,34026L,34027L, -34028L,34029L,34030L,34031L,34032L,34033L,34034L,34035L,34036L,34037L, -34038L,34039L,34040L,34041L,34042L,34043L,34044L,34045L,34046L,34047L, -34048L,34049L,34050L,34051L,34052L,34053L,34054L,34055L,34056L,34057L, -34058L,34059L,34060L,34061L,34062L,34063L,34064L,34065L,34066L,34067L, -34068L,34069L,34070L,34071L,34072L,34073L,34074L,34075L,34076L,34077L, -34078L,34079L,34080L,34081L,34082L,34083L,34084L,34085L,34086L,34087L, -34088L,34089L,34090L,34091L,34092L,34093L,34094L,34095L,34096L,34097L, -34098L,34099L,34100L,34101L,34102L,34103L,34104L,34105L,34106L,34107L, -34108L,34109L,34110L,34111L,34112L,34113L,34114L,34115L,34116L,34117L, -34118L,34119L,34120L,34121L,34122L,34123L,34124L,34125L,34126L,34127L, -34128L,34129L,34130L,34131L,34132L,34133L,34134L,34135L,34136L,34137L, -34138L,34139L,34140L,34141L,34142L,34143L,34144L,34145L,34146L,34147L, -34148L,34149L,34150L,34151L,34152L,34153L,34154L,34155L,34156L,34157L, -34158L,34159L,34160L,34161L,34162L,34163L,34164L,34165L,34166L,34167L, -34168L,34169L,34170L,34171L,34172L,34173L,34174L,34175L,34176L,34177L, -34178L,34179L,34180L,34181L,34182L,34183L,34184L,34185L,34186L,34187L, -34188L,34189L,34190L,34191L,34192L,34193L,34194L,34195L,34196L,34197L, -34198L,34199L,34200L,34201L,34202L,34203L,34204L,34205L,34206L,34207L, -34208L,34209L,34210L,34211L,34212L,34213L,34214L,34215L,34216L,34217L, -34218L,34219L,34220L,34221L,34222L,34223L,34224L,34225L,34226L,34227L, -34228L,34229L,34230L,34231L,34232L,34233L,34234L,34235L,34236L,34237L, -34238L,34239L,34240L,34241L,34242L,34243L,34244L,34245L,34246L,34247L, -34248L,34249L,34250L,34251L,34252L,34253L,34254L,34255L,34256L,34257L, -34258L,34259L,34260L,34261L,34262L,34263L,34264L,34265L,34266L,34267L, -34268L,34269L,34270L,34271L,34272L,34273L,34274L,34275L,34276L,34277L, -34278L,34279L,34280L,34281L,34282L,34283L,34284L,34285L,34286L,34287L, -34288L,34289L,34290L,34291L,34292L,34293L,34294L,34295L,34296L,34297L, -34298L,34299L,34300L,34301L,34302L,34303L,34304L,34305L,34306L,34307L, -34308L,34309L,34310L,34311L,34312L,34313L,34314L,34315L,34316L,34317L, -34318L,34319L,34320L,34321L,34322L,34323L,34324L,34325L,34326L,34327L, -34328L,34329L,34330L,34331L,34332L,34333L,34334L,34335L,34336L,34337L, -34338L,34339L,34340L,34341L,34342L,34343L,34344L,34345L,34346L,34347L, -34348L,34349L,34350L,34351L,34352L,34353L,34354L,34355L,34356L,34357L, -34358L,34359L,34360L,34361L,34362L,34363L,34364L,34365L,34366L,34367L, -34368L,34369L,34370L,34371L,34372L,34373L,34374L,34375L,34376L,34377L, -34378L,34379L,34380L,34381L,34382L,34383L,34384L,34385L,34386L,34387L, -34388L,34389L,34390L,34391L,34392L,34393L,34394L,34395L,34396L,34397L, -34398L,34399L,34400L,34401L,34402L,34403L,34404L,34405L,34406L,34407L, -34408L,34409L,34410L,34411L,34412L,34413L,34414L,34415L,34416L,34417L, -34418L,34419L,34420L,34421L,34422L,34423L,34424L,34425L,34426L,34427L, -34428L,34429L,34430L,34431L,34432L,34433L,34434L,34435L,34436L,34437L, -34438L,34439L,34440L,34441L,34442L,34443L,34444L,34445L,34446L,34447L, -34448L,34449L,34450L,34451L,34452L,34453L,34454L,34455L,34456L,34457L, -34458L,34459L,34460L,34461L,34462L,34463L,34464L,34465L,34466L,34467L, -34468L,34469L,34470L,34471L,34472L,34473L,34474L,34475L,34476L,34477L, -34478L,34479L,34480L,34481L,34482L,34483L,34484L,34485L,34486L,34487L, -34488L,34489L,34490L,34491L,34492L,34493L,34494L,34495L,34496L,34497L, -34498L,34499L,34500L,34501L,34502L,34503L,34504L,34505L,34506L,34507L, -34508L,34509L,34510L,34511L,34512L,34513L,34514L,34515L,34516L,34517L, -34518L,34519L,34520L,34521L,34522L,34523L,34524L,34525L,34526L,34527L, -34528L,34529L,34530L,34531L,34532L,34533L,34534L,34535L,34536L,34537L, -34538L,34539L,34540L,34541L,34542L,34543L,34544L,34545L,34546L,34547L, -34548L,34549L,34550L,34551L,34552L,34553L,34554L,34555L,34556L,34557L, -34558L,34559L,34560L,34561L,34562L,34563L,34564L,34565L,34566L,34567L, -34568L,34569L,34570L,34571L,34572L,34573L,34574L,34575L,34576L,34577L, -34578L,34579L,34580L,34581L,34582L,34583L,34584L,34585L,34586L,34587L, -34588L,34589L,34590L,34591L,34592L,34593L,34594L,34595L,34596L,34597L, -34598L,34599L,34600L,34601L,34602L,34603L,34604L,34605L,34606L,34607L, -34608L,34609L,34610L,34611L,34612L,34613L,34614L,34615L,34616L,34617L, -34618L,34619L,34620L,34621L,34622L,34623L,34624L,34625L,34626L,34627L, -34628L,34629L,34630L,34631L,34632L,34633L,34634L,34635L,34636L,34637L, -34638L,34639L,34640L,34641L,34642L,34643L,34644L,34645L,34646L,34647L, -34648L,34649L,34650L,34651L,34652L,34653L,34654L,34655L,34656L,34657L, -34658L,34659L,34660L,34661L,34662L,34663L,34664L,34665L,34666L,34667L, -34668L,34669L,34670L,34671L,34672L,34673L,34674L,34675L,34676L,34677L, -34678L,34679L,34680L,34681L,34682L,34683L,34684L,34685L,34686L,34687L, -34688L,34689L,34690L,34691L,34692L,34693L,34694L,34695L,34696L,34697L, -34698L,34699L,34700L,34701L,34702L,34703L,34704L,34705L,34706L,34707L, -34708L,34709L,34710L,34711L,34712L,34713L,34714L,34715L,34716L,34717L, -34718L,34719L,34720L,34721L,34722L,34723L,34724L,34725L,34726L,34727L, -34728L,34729L,34730L,34731L,34732L,34733L,34734L,34735L,34736L,34737L, -34738L,34739L,34740L,34741L,34742L,34743L,34744L,34745L,34746L,34747L, -34748L,34749L,34750L,34751L,34752L,34753L,34754L,34755L,34756L,34757L, -34758L,34759L,34760L,34761L,34762L,34763L,34764L,34765L,34766L,34767L, -34768L,34769L,34770L,34771L,34772L,34773L,34774L,34775L,34776L,34777L, -34778L,34779L,34780L,34781L,34782L,34783L,34784L,34785L,34786L,34787L, -34788L,34789L,34790L,34791L,34792L,34793L,34794L,34795L,34796L,34797L, -34798L,34799L,34800L,34801L,34802L,34803L,34804L,34805L,34806L,34807L, -34808L,34809L,34810L,34811L,34812L,34813L,34814L,34815L,34816L,34817L, -34818L,34819L,34820L,34821L,34822L,34823L,34824L,34825L,34826L,34827L, -34828L,34829L,34830L,34831L,34832L,34833L,34834L,34835L,34836L,34837L, -34838L,34839L,34840L,34841L,34842L,34843L,34844L,34845L,34846L,34847L, -34848L,34849L,34850L,34851L,34852L,34853L,34854L,34855L,34856L,34857L, -34858L,34859L,34860L,34861L,34862L,34863L,34864L,34865L,34866L,34867L, -34868L,34869L,34870L,34871L,34872L,34873L,34874L,34875L,34876L,34877L, -34878L,34879L,34880L,34881L,34882L,34883L,34884L,34885L,34886L,34887L, -34888L,34889L,34890L,34891L,34892L,34893L,34894L,34895L,34896L,34897L, -34898L,34899L,34900L,34901L,34902L,34903L,34904L,34905L,34906L,34907L, -34908L,34909L,34910L,34911L,34912L,34913L,34914L,34915L,34916L,34917L, -34918L,34919L,34920L,34921L,34922L,34923L,34924L,34925L,34926L,34927L, -34928L,34929L,34930L,34931L,34932L,34933L,34934L,34935L,34936L,34937L, -34938L,34939L,34940L,34941L,34942L,34943L,34944L,34945L,34946L,34947L, -34948L,34949L,34950L,34951L,34952L,34953L,34954L,34955L,34956L,34957L, -34958L,34959L,34960L,34961L,34962L,34963L,34964L,34965L,34966L,34967L, -34968L,34969L,34970L,34971L,34972L,34973L,34974L,34975L,34976L,34977L, -34978L,34979L,34980L,34981L,34982L,34983L,34984L,34985L,34986L,34987L, -34988L,34989L,34990L,34991L,34992L,34993L,34994L,34995L,34996L,34997L, -34998L,34999L,35000L,35001L,35002L,35003L,35004L,35005L,35006L,35007L, -35008L,35009L,35010L,35011L,35012L,35013L,35014L,35015L,35016L,35017L, -35018L,35019L,35020L,35021L,35022L,35023L,35024L,35025L,35026L,35027L, -35028L,35029L,35030L,35031L,35032L,35033L,35034L,35035L,35036L,35037L, -35038L,35039L,35040L,35041L,35042L,35043L,35044L,35045L,35046L,35047L, -35048L,35049L,35050L,35051L,35052L,35053L,35054L,35055L,35056L,35057L, -35058L,35059L,35060L,35061L,35062L,35063L,35064L,35065L,35066L,35067L, -35068L,35069L,35070L,35071L,35072L,35073L,35074L,35075L,35076L,35077L, -35078L,35079L,35080L,35081L,35082L,35083L,35084L,35085L,35086L,35087L, -35088L,35089L,35090L,35091L,35092L,35093L,35094L,35095L,35096L,35097L, -35098L,35099L,35100L,35101L,35102L,35103L,35104L,35105L,35106L,35107L, -35108L,35109L,35110L,35111L,35112L,35113L,35114L,35115L,35116L,35117L, -35118L,35119L,35120L,35121L,35122L,35123L,35124L,35125L,35126L,35127L, -35128L,35129L,35130L,35131L,35132L,35133L,35134L,35135L,35136L,35137L, -35138L,35139L,35140L,35141L,35142L,35143L,35144L,35145L,35146L,35147L, -35148L,35149L,35150L,35151L,35152L,35153L,35154L,35155L,35156L,35157L, -35158L,35159L,35160L,35161L,35162L,35163L,35164L,35165L,35166L,35167L, -35168L,35169L,35170L,35171L,35172L,35173L,35174L,35175L,35176L,35177L, -35178L,35179L,35180L,35181L,35182L,35183L,35184L,35185L,35186L,35187L, -35188L,35189L,35190L,35191L,35192L,35193L,35194L,35195L,35196L,35197L, -35198L,35199L,35200L,35201L,35202L,35203L,35204L,35205L,35206L,35207L, -35208L,35209L,35210L,35211L,35212L,35213L,35214L,35215L,35216L,35217L, -35218L,35219L,35220L,35221L,35222L,35223L,35224L,35225L,35226L,35227L, -35228L,35229L,35230L,35231L,35232L,35233L,35234L,35235L,35236L,35237L, -35238L,35239L,35240L,35241L,35242L,35243L,35244L,35245L,35246L,35247L, -35248L,35249L,35250L,35251L,35252L,35253L,35254L,35255L,35256L,35257L, -35258L,35259L,35260L,35261L,35262L,35263L,35264L,35265L,35266L,35267L, -35268L,35269L,35270L,35271L,35272L,35273L,35274L,35275L,35276L,35277L, -35278L,35279L,35280L,35281L,35282L,35283L,35284L,35285L,35286L,35287L, -35288L,35289L,35290L,35291L,35292L,35293L,35294L,35295L,35296L,35297L, -35298L,35299L,35300L,35301L,35302L,35303L,35304L,35305L,35306L,35307L, -35308L,35309L,35310L,35311L,35312L,35313L,35314L,35315L,35316L,35317L, -35318L,35319L,35320L,35321L,35322L,35323L,35324L,35325L,35326L,35327L, -35328L,35329L,35330L,35331L,35332L,35333L,35334L,35335L,35336L,35337L, -35338L,35339L,35340L,35341L,35342L,35343L,35344L,35345L,35346L,35347L, -35348L,35349L,35350L,35351L,35352L,35353L,35354L,35355L,35356L,35357L, -35358L,35359L,35360L,35361L,35362L,35363L,35364L,35365L,35366L,35367L, -35368L,35369L,35370L,35371L,35372L,35373L,35374L,35375L,35376L,35377L, -35378L,35379L,35380L,35381L,35382L,35383L,35384L,35385L,35386L,35387L, -35388L,35389L,35390L,35391L,35392L,35393L,35394L,35395L,35396L,35397L, -35398L,35399L,35400L,35401L,35402L,35403L,35404L,35405L,35406L,35407L, -35408L,35409L,35410L,35411L,35412L,35413L,35414L,35415L,35416L,35417L, -35418L,35419L,35420L,35421L,35422L,35423L,35424L,35425L,35426L,35427L, -35428L,35429L,35430L,35431L,35432L,35433L,35434L,35435L,35436L,35437L, -35438L,35439L,35440L,35441L,35442L,35443L,35444L,35445L,35446L,35447L, -35448L,35449L,35450L,35451L,35452L,35453L,35454L,35455L,35456L,35457L, -35458L,35459L,35460L,35461L,35462L,35463L,35464L,35465L,35466L,35467L, -35468L,35469L,35470L,35471L,35472L,35473L,35474L,35475L,35476L,35477L, -35478L,35479L,35480L,35481L,35482L,35483L,35484L,35485L,35486L,35487L, -35488L,35489L,35490L,35491L,35492L,35493L,35494L,35495L,35496L,35497L, -35498L,35499L,35500L,35501L,35502L,35503L,35504L,35505L,35506L,35507L, -35508L,35509L,35510L,35511L,35512L,35513L,35514L,35515L,35516L,35517L, -35518L,35519L,35520L,35521L,35522L,35523L,35524L,35525L,35526L,35527L, -35528L,35529L,35530L,35531L,35532L,35533L,35534L,35535L,35536L,35537L, -35538L,35539L,35540L,35541L,35542L,35543L,35544L,35545L,35546L,35547L, -35548L,35549L,35550L,35551L,35552L,35553L,35554L,35555L,35556L,35557L, -35558L,35559L,35560L,35561L,35562L,35563L,35564L,35565L,35566L,35567L, -35568L,35569L,35570L,35571L,35572L,35573L,35574L,35575L,35576L,35577L, -35578L,35579L,35580L,35581L,35582L,35583L,35584L,35585L,35586L,35587L, -35588L,35589L,35590L,35591L,35592L,35593L,35594L,35595L,35596L,35597L, -35598L,35599L,35600L,35601L,35602L,35603L,35604L,35605L,35606L,35607L, -35608L,35609L,35610L,35611L,35612L,35613L,35614L,35615L,35616L,35617L, -35618L,35619L,35620L,35621L,35622L,35623L,35624L,35625L,35626L,35627L, -35628L,35629L,35630L,35631L,35632L,35633L,35634L,35635L,35636L,35637L, -35638L,35639L,35640L,35641L,35642L,35643L,35644L,35645L,35646L,35647L, -35648L,35649L,35650L,35651L,35652L,35653L,35654L,35655L,35656L,35657L, -35658L,35659L,35660L,35661L,35662L,35663L,35664L,35665L,35666L,35667L, -35668L,35669L,35670L,35671L,35672L,35673L,35674L,35675L,35676L,35677L, -35678L,35679L,35680L,35681L,35682L,35683L,35684L,35685L,35686L,35687L, -35688L,35689L,35690L,35691L,35692L,35693L,35694L,35695L,35696L,35697L, -35698L,35699L,35700L,35701L,35702L,35703L,35704L,35705L,35706L,35707L, -35708L,35709L,35710L,35711L,35712L,35713L,35714L,35715L,35716L,35717L, -35718L,35719L,35720L,35721L,35722L,35723L,35724L,35725L,35726L,35727L, -35728L,35729L,35730L,35731L,35732L,35733L,35734L,35735L,35736L,35737L, -35738L,35739L,35740L,35741L,35742L,35743L,35744L,35745L,35746L,35747L, -35748L,35749L,35750L,35751L,35752L,35753L,35754L,35755L,35756L,35757L, -35758L,35759L,35760L,35761L,35762L,35763L,35764L,35765L,35766L,35767L, -35768L,35769L,35770L,35771L,35772L,35773L,35774L,35775L,35776L,35777L, -35778L,35779L,35780L,35781L,35782L,35783L,35784L,35785L,35786L,35787L, -35788L,35789L,35790L,35791L,35792L,35793L,35794L,35795L,35796L,35797L, -35798L,35799L,35800L,35801L,35802L,35803L,35804L,35805L,35806L,35807L, -35808L,35809L,35810L,35811L,35812L,35813L,35814L,35815L,35816L,35817L, -35818L,35819L,35820L,35821L,35822L,35823L,35824L,35825L,35826L,35827L, -35828L,35829L,35830L,35831L,35832L,35833L,35834L,35835L,35836L,35837L, -35838L,35839L,35840L,35841L,35842L,35843L,35844L,35845L,35846L,35847L, -35848L,35849L,35850L,35851L,35852L,35853L,35854L,35855L,35856L,35857L, -35858L,35859L,35860L,35861L,35862L,35863L,35864L,35865L,35866L,35867L, -35868L,35869L,35870L,35871L,35872L,35873L,35874L,35875L,35876L,35877L, -35878L,35879L,35880L,35881L,35882L,35883L,35884L,35885L,35886L,35887L, -35888L,35889L,35890L,35891L,35892L,35893L,35894L,35895L,35896L,35897L, -35898L,35899L,35900L,35901L,35902L,35903L,35904L,35905L,35906L,35907L, -35908L,35909L,35910L,35911L,35912L,35913L,35914L,35915L,35916L,35917L, -35918L,35919L,35920L,35921L,35922L,35923L,35924L,35925L,35926L,35927L, -35928L,35929L,35930L,35931L,35932L,35933L,35934L,35935L,35936L,35937L, -35938L,35939L,35940L,35941L,35942L,35943L,35944L,35945L,35946L,35947L, -35948L,35949L,35950L,35951L,35952L,35953L,35954L,35955L,35956L,35957L, -35958L,35959L,35960L,35961L,35962L,35963L,35964L,35965L,35966L,35967L, -35968L,35969L,35970L,35971L,35972L,35973L,35974L,35975L,35976L,35977L, -35978L,35979L,35980L,35981L,35982L,35983L,35984L,35985L,35986L,35987L, -35988L,35989L,35990L,35991L,35992L,35993L,35994L,35995L,35996L,35997L, -35998L,35999L,36000L,36001L,36002L,36003L,36004L,36005L,36006L,36007L, -36008L,36009L,36010L,36011L,36012L,36013L,36014L,36015L,36016L,36017L, -36018L,36019L,36020L,36021L,36022L,36023L,36024L,36025L,36026L,36027L, -36028L,36029L,36030L,36031L,36032L,36033L,36034L,36035L,36036L,36037L, -36038L,36039L,36040L,36041L,36042L,36043L,36044L,36045L,36046L,36047L, -36048L,36049L,36050L,36051L,36052L,36053L,36054L,36055L,36056L,36057L, -36058L,36059L,36060L,36061L,36062L,36063L,36064L,36065L,36066L,36067L, -36068L,36069L,36070L,36071L,36072L,36073L,36074L,36075L,36076L,36077L, -36078L,36079L,36080L,36081L,36082L,36083L,36084L,36085L,36086L,36087L, -36088L,36089L,36090L,36091L,36092L,36093L,36094L,36095L,36096L,36097L, -36098L,36099L,36100L,36101L,36102L,36103L,36104L,36105L,36106L,36107L, -36108L,36109L,36110L,36111L,36112L,36113L,36114L,36115L,36116L,36117L, -36118L,36119L,36120L,36121L,36122L,36123L,36124L,36125L,36126L,36127L, -36128L,36129L,36130L,36131L,36132L,36133L,36134L,36135L,36136L,36137L, -36138L,36139L,36140L,36141L,36142L,36143L,36144L,36145L,36146L,36147L, -36148L,36149L,36150L,36151L,36152L,36153L,36154L,36155L,36156L,36157L, -36158L,36159L,36160L,36161L,36162L,36163L,36164L,36165L,36166L,36167L, -36168L,36169L,36170L,36171L,36172L,36173L,36174L,36175L,36176L,36177L, -36178L,36179L,36180L,36181L,36182L,36183L,36184L,36185L,36186L,36187L, -36188L,36189L,36190L,36191L,36192L,36193L,36194L,36195L,36196L,36197L, -36198L,36199L,36200L,36201L,36202L,36203L,36204L,36205L,36206L,36207L, -36208L,36209L,36210L,36211L,36212L,36213L,36214L,36215L,36216L,36217L, -36218L,36219L,36220L,36221L,36222L,36223L,36224L,36225L,36226L,36227L, -36228L,36229L,36230L,36231L,36232L,36233L,36234L,36235L,36236L,36237L, -36238L,36239L,36240L,36241L,36242L,36243L,36244L,36245L,36246L,36247L, -36248L,36249L,36250L,36251L,36252L,36253L,36254L,36255L,36256L,36257L, -36258L,36259L,36260L,36261L,36262L,36263L,36264L,36265L,36266L,36267L, -36268L,36269L,36270L,36271L,36272L,36273L,36274L,36275L,36276L,36277L, -36278L,36279L,36280L,36281L,36282L,36283L,36284L,36285L,36286L,36287L, -36288L,36289L,36290L,36291L,36292L,36293L,36294L,36295L,36296L,36297L, -36298L,36299L,36300L,36301L,36302L,36303L,36304L,36305L,36306L,36307L, -36308L,36309L,36310L,36311L,36312L,36313L,36314L,36315L,36316L,36317L, -36318L,36319L,36320L,36321L,36322L,36323L,36324L,36325L,36326L,36327L, -36328L,36329L,36330L,36331L,36332L,36333L,36334L,36335L,36336L,36337L, -36338L,36339L,36340L,36341L,36342L,36343L,36344L,36345L,36346L,36347L, -36348L,36349L,36350L,36351L,36352L,36353L,36354L,36355L,36356L,36357L, -36358L,36359L,36360L,36361L,36362L,36363L,36364L,36365L,36366L,36367L, -36368L,36369L,36370L,36371L,36372L,36373L,36374L,36375L,36376L,36377L, -36378L,36379L,36380L,36381L,36382L,36383L,36384L,36385L,36386L,36387L, -36388L,36389L,36390L,36391L,36392L,36393L,36394L,36395L,36396L,36397L, -36398L,36399L,36400L,36401L,36402L,36403L,36404L,36405L,36406L,36407L, -36408L,36409L,36410L,36411L,36412L,36413L,36414L,36415L,36416L,36417L, -36418L,36419L,36420L,36421L,36422L,36423L,36424L,36425L,36426L,36427L, -36428L,36429L,36430L,36431L,36432L,36433L,36434L,36435L,36436L,36437L, -36438L,36439L,36440L,36441L,36442L,36443L,36444L,36445L,36446L,36447L, -36448L,36449L,36450L,36451L,36452L,36453L,36454L,36455L,36456L,36457L, -36458L,36459L,36460L,36461L,36462L,36463L,36464L,36465L,36466L,36467L, -36468L,36469L,36470L,36471L,36472L,36473L,36474L,36475L,36476L,36477L, -36478L,36479L,36480L,36481L,36482L,36483L,36484L,36485L,36486L,36487L, -36488L,36489L,36490L,36491L,36492L,36493L,36494L,36495L,36496L,36497L, -36498L,36499L,36500L,36501L,36502L,36503L,36504L,36505L,36506L,36507L, -36508L,36509L,36510L,36511L,36512L,36513L,36514L,36515L,36516L,36517L, -36518L,36519L,36520L,36521L,36522L,36523L,36524L,36525L,36526L,36527L, -36528L,36529L,36530L,36531L,36532L,36533L,36534L,36535L,36536L,36537L, -36538L,36539L,36540L,36541L,36542L,36543L,36544L,36545L,36546L,36547L, -36548L,36549L,36550L,36551L,36552L,36553L,36554L,36555L,36556L,36557L, -36558L,36559L,36560L,36561L,36562L,36563L,36564L,36565L,36566L,36567L, -36568L,36569L,36570L,36571L,36572L,36573L,36574L,36575L,36576L,36577L, -36578L,36579L,36580L,36581L,36582L,36583L,36584L,36585L,36586L,36587L, -36588L,36589L,36590L,36591L,36592L,36593L,36594L,36595L,36596L,36597L, -36598L,36599L,36600L,36601L,36602L,36603L,36604L,36605L,36606L,36607L, -36608L,36609L,36610L,36611L,36612L,36613L,36614L,36615L,36616L,36617L, -36618L,36619L,36620L,36621L,36622L,36623L,36624L,36625L,36626L,36627L, -36628L,36629L,36630L,36631L,36632L,36633L,36634L,36635L,36636L,36637L, -36638L,36639L,36640L,36641L,36642L,36643L,36644L,36645L,36646L,36647L, -36648L,36649L,36650L,36651L,36652L,36653L,36654L,36655L,36656L,36657L, -36658L,36659L,36660L,36661L,36662L,36663L,36664L,36665L,36666L,36667L, -36668L,36669L,36670L,36671L,36672L,36673L,36674L,36675L,36676L,36677L, -36678L,36679L,36680L,36681L,36682L,36683L,36684L,36685L,36686L,36687L, -36688L,36689L,36690L,36691L,36692L,36693L,36694L,36695L,36696L,36697L, -36698L,36699L,36700L,36701L,36702L,36703L,36704L,36705L,36706L,36707L, -36708L,36709L,36710L,36711L,36712L,36713L,36714L,36715L,36716L,36717L, -36718L,36719L,36720L,36721L,36722L,36723L,36724L,36725L,36726L,36727L, -36728L,36729L,36730L,36731L,36732L,36733L,36734L,36735L,36736L,36737L, -36738L,36739L,36740L,36741L,36742L,36743L,36744L,36745L,36746L,36747L, -36748L,36749L,36750L,36751L,36752L,36753L,36754L,36755L,36756L,36757L, -36758L,36759L,36760L,36761L,36762L,36763L,36764L,36765L,36766L,36767L, -36768L,36769L,36770L,36771L,36772L,36773L,36774L,36775L,36776L,36777L, -36778L,36779L,36780L,36781L,36782L,36783L,36784L,36785L,36786L,36787L, -36788L,36789L,36790L,36791L,36792L,36793L,36794L,36795L,36796L,36797L, -36798L,36799L,36800L,36801L,36802L,36803L,36804L,36805L,36806L,36807L, -36808L,36809L,36810L,36811L,36812L,36813L,36814L,36815L,36816L,36817L, -36818L,36819L,36820L,36821L,36822L,36823L,36824L,36825L,36826L,36827L, -36828L,36829L,36830L,36831L,36832L,36833L,36834L,36835L,36836L,36837L, -36838L,36839L,36840L,36841L,36842L,36843L,36844L,36845L,36846L,36847L, -36848L,36849L,36850L,36851L,36852L,36853L,36854L,36855L,36856L,36857L, -36858L,36859L,36860L,36861L,36862L,36863L,36864L,36865L,36866L,36867L, -36868L,36869L,36870L,36871L,36872L,36873L,36874L,36875L,36876L,36877L, -36878L,36879L,36880L,36881L,36882L,36883L,36884L,36885L,36886L,36887L, -36888L,36889L,36890L,36891L,36892L,36893L,36894L,36895L,36896L,36897L, -36898L,36899L,36900L,36901L,36902L,36903L,36904L,36905L,36906L,36907L, -36908L,36909L,36910L,36911L,36912L,36913L,36914L,36915L,36916L,36917L, -36918L,36919L,36920L,36921L,36922L,36923L,36924L,36925L,36926L,36927L, -36928L,36929L,36930L,36931L,36932L,36933L,36934L,36935L,36936L,36937L, -36938L,36939L,36940L,36941L,36942L,36943L,36944L,36945L,36946L,36947L, -36948L,36949L,36950L,36951L,36952L,36953L,36954L,36955L,36956L,36957L, -36958L,36959L,36960L,36961L,36962L,36963L,36964L,36965L,36966L,36967L, -36968L,36969L,36970L,36971L,36972L,36973L,36974L,36975L,36976L,36977L, -36978L,36979L,36980L,36981L,36982L,36983L,36984L,36985L,36986L,36987L, -36988L,36989L,36990L,36991L,36992L,36993L,36994L,36995L,36996L,36997L, -36998L,36999L,37000L,37001L,37002L,37003L,37004L,37005L,37006L,37007L, -37008L,37009L,37010L,37011L,37012L,37013L,37014L,37015L,37016L,37017L, -37018L,37019L,37020L,37021L,37022L,37023L,37024L,37025L,37026L,37027L, -37028L,37029L,37030L,37031L,37032L,37033L,37034L,37035L,37036L,37037L, -37038L,37039L,37040L,37041L,37042L,37043L,37044L,37045L,37046L,37047L, -37048L,37049L,37050L,37051L,37052L,37053L,37054L,37055L,37056L,37057L, -37058L,37059L,37060L,37061L,37062L,37063L,37064L,37065L,37066L,37067L, -37068L,37069L,37070L,37071L,37072L,37073L,37074L,37075L,37076L,37077L, -37078L,37079L,37080L,37081L,37082L,37083L,37084L,37085L,37086L,37087L, -37088L,37089L,37090L,37091L,37092L,37093L,37094L,37095L,37096L,37097L, -37098L,37099L,37100L,37101L,37102L,37103L,37104L,37105L,37106L,37107L, -37108L,37109L,37110L,37111L,37112L,37113L,37114L,37115L,37116L,37117L, -37118L,37119L,37120L,37121L,37122L,37123L,37124L,37125L,37126L,37127L, -37128L,37129L,37130L,37131L,37132L,37133L,37134L,37135L,37136L,37137L, -37138L,37139L,37140L,37141L,37142L,37143L,37144L,37145L,37146L,37147L, -37148L,37149L,37150L,37151L,37152L,37153L,37154L,37155L,37156L,37157L, -37158L,37159L,37160L,37161L,37162L,37163L,37164L,37165L,37166L,37167L, -37168L,37169L,37170L,37171L,37172L,37173L,37174L,37175L,37176L,37177L, -37178L,37179L,37180L,37181L,37182L,37183L,37184L,37185L,37186L,37187L, -37188L,37189L,37190L,37191L,37192L,37193L,37194L,37195L,37196L,37197L, -37198L,37199L,37200L,37201L,37202L,37203L,37204L,37205L,37206L,37207L, -37208L,37209L,37210L,37211L,37212L,37213L,37214L,37215L,37216L,37217L, -37218L,37219L,37220L,37221L,37222L,37223L,37224L,37225L,37226L,37227L, -37228L,37229L,37230L,37231L,37232L,37233L,37234L,37235L,37236L,37237L, -37238L,37239L,37240L,37241L,37242L,37243L,37244L,37245L,37246L,37247L, -37248L,37249L,37250L,37251L,37252L,37253L,37254L,37255L,37256L,37257L, -37258L,37259L,37260L,37261L,37262L,37263L,37264L,37265L,37266L,37267L, -37268L,37269L,37270L,37271L,37272L,37273L,37274L,37275L,37276L,37277L, -37278L,37279L,37280L,37281L,37282L,37283L,37284L,37285L,37286L,37287L, -37288L,37289L,37290L,37291L,37292L,37293L,37294L,37295L,37296L,37297L, -37298L,37299L,37300L,37301L,37302L,37303L,37304L,37305L,37306L,37307L, -37308L,37309L,37310L,37311L,37312L,37313L,37314L,37315L,37316L,37317L, -37318L,37319L,37320L,37321L,37322L,37323L,37324L,37325L,37326L,37327L, -37328L,37329L,37330L,37331L,37332L,37333L,37334L,37335L,37336L,37337L, -37338L,37339L,37340L,37341L,37342L,37343L,37344L,37345L,37346L,37347L, -37348L,37349L,37350L,37351L,37352L,37353L,37354L,37355L,37356L,37357L, -37358L,37359L,37360L,37361L,37362L,37363L,37364L,37365L,37366L,37367L, -37368L,37369L,37370L,37371L,37372L,37373L,37374L,37375L,37376L,37377L, -37378L,37379L,37380L,37381L,37382L,37383L,37384L,37385L,37386L,37387L, -37388L,37389L,37390L,37391L,37392L,37393L,37394L,37395L,37396L,37397L, -37398L,37399L,37400L,37401L,37402L,37403L,37404L,37405L,37406L,37407L, -37408L,37409L,37410L,37411L,37412L,37413L,37414L,37415L,37416L,37417L, -37418L,37419L,37420L,37421L,37422L,37423L,37424L,37425L,37426L,37427L, -37428L,37429L,37430L,37431L,37432L,37433L,37434L,37435L,37436L,37437L, -37438L,37439L,37440L,37441L,37442L,37443L,37444L,37445L,37446L,37447L, -37448L,37449L,37450L,37451L,37452L,37453L,37454L,37455L,37456L,37457L, -37458L,37459L,37460L,37461L,37462L,37463L,37464L,37465L,37466L,37467L, -37468L,37469L,37470L,37471L,37472L,37473L,37474L,37475L,37476L,37477L, -37478L,37479L,37480L,37481L,37482L,37483L,37484L,37485L,37486L,37487L, -37488L,37489L,37490L,37491L,37492L,37493L,37494L,37495L,37496L,37497L, -37498L,37499L,37500L,37501L,37502L,37503L,37504L,37505L,37506L,37507L, -37508L,37509L,37510L,37511L,37512L,37513L,37514L,37515L,37516L,37517L, -37518L,37519L,37520L,37521L,37522L,37523L,37524L,37525L,37526L,37527L, -37528L,37529L,37530L,37531L,37532L,37533L,37534L,37535L,37536L,37537L, -37538L,37539L,37540L,37541L,37542L,37543L,37544L,37545L,37546L,37547L, -37548L,37549L,37550L,37551L,37552L,37553L,37554L,37555L,37556L,37557L, -37558L,37559L,37560L,37561L,37562L,37563L,37564L,37565L,37566L,37567L, -37568L,37569L,37570L,37571L,37572L,37573L,37574L,37575L,37576L,37577L, -37578L,37579L,37580L,37581L,37582L,37583L,37584L,37585L,37586L,37587L, -37588L,37589L,37590L,37591L,37592L,37593L,37594L,37595L,37596L,37597L, -37598L,37599L,37600L,37601L,37602L,37603L,37604L,37605L,37606L,37607L, -37608L,37609L,37610L,37611L,37612L,37613L,37614L,37615L,37616L,37617L, -37618L,37619L,37620L,37621L,37622L,37623L,37624L,37625L,37626L,37627L, -37628L,37629L,37630L,37631L,37632L,37633L,37634L,37635L,37636L,37637L, -37638L,37639L,37640L,37641L,37642L,37643L,37644L,37645L,37646L,37647L, -37648L,37649L,37650L,37651L,37652L,37653L,37654L,37655L,37656L,37657L, -37658L,37659L,37660L,37661L,37662L,37663L,37664L,37665L,37666L,37667L, -37668L,37669L,37670L,37671L,37672L,37673L,37674L,37675L,37676L,37677L, -37678L,37679L,37680L,37681L,37682L,37683L,37684L,37685L,37686L,37687L, -37688L,37689L,37690L,37691L,37692L,37693L,37694L,37695L,37696L,37697L, -37698L,37699L,37700L,37701L,37702L,37703L,37704L,37705L,37706L,37707L, -37708L,37709L,37710L,37711L,37712L,37713L,37714L,37715L,37716L,37717L, -37718L,37719L,37720L,37721L,37722L,37723L,37724L,37725L,37726L,37727L, -37728L,37729L,37730L,37731L,37732L,37733L,37734L,37735L,37736L,37737L, -37738L,37739L,37740L,37741L,37742L,37743L,37744L,37745L,37746L,37747L, -37748L,37749L,37750L,37751L,37752L,37753L,37754L,37755L,37756L,37757L, -37758L,37759L,37760L,37761L,37762L,37763L,37764L,37765L,37766L,37767L, -37768L,37769L,37770L,37771L,37772L,37773L,37774L,37775L,37776L,37777L, -37778L,37779L,37780L,37781L,37782L,37783L,37784L,37785L,37786L,37787L, -37788L,37789L,37790L,37791L,37792L,37793L,37794L,37795L,37796L,37797L, -37798L,37799L,37800L,37801L,37802L,37803L,37804L,37805L,37806L,37807L, -37808L,37809L,37810L,37811L,37812L,37813L,37814L,37815L,37816L,37817L, -37818L,37819L,37820L,37821L,37822L,37823L,37824L,37825L,37826L,37827L, -37828L,37829L,37830L,37831L,37832L,37833L,37834L,37835L,37836L,37837L, -37838L,37839L,37840L,37841L,37842L,37843L,37844L,37845L,37846L,37847L, -37848L,37849L,37850L,37851L,37852L,37853L,37854L,37855L,37856L,37857L, -37858L,37859L,37860L,37861L,37862L,37863L,37864L,37865L,37866L,37867L, -37868L,37869L,37870L,37871L,37872L,37873L,37874L,37875L,37876L,37877L, -37878L,37879L,37880L,37881L,37882L,37883L,37884L,37885L,37886L,37887L, -37888L,37889L,37890L,37891L,37892L,37893L,37894L,37895L,37896L,37897L, -37898L,37899L,37900L,37901L,37902L,37903L,37904L,37905L,37906L,37907L, -37908L,37909L,37910L,37911L,37912L,37913L,37914L,37915L,37916L,37917L, -37918L,37919L,37920L,37921L,37922L,37923L,37924L,37925L,37926L,37927L, -37928L,37929L,37930L,37931L,37932L,37933L,37934L,37935L,37936L,37937L, -37938L,37939L,37940L,37941L,37942L,37943L,37944L,37945L,37946L,37947L, -37948L,37949L,37950L,37951L,37952L,37953L,37954L,37955L,37956L,37957L, -37958L,37959L,37960L,37961L,37962L,37963L,37964L,37965L,37966L,37967L, -37968L,37969L,37970L,37971L,37972L,37973L,37974L,37975L,37976L,37977L, -37978L,37979L,37980L,37981L,37982L,37983L,37984L,37985L,37986L,37987L, -37988L,37989L,37990L,37991L,37992L,37993L,37994L,37995L,37996L,37997L, -37998L,37999L,38000L,38001L,38002L,38003L,38004L,38005L,38006L,38007L, -38008L,38009L,38010L,38011L,38012L,38013L,38014L,38015L,38016L,38017L, -38018L,38019L,38020L,38021L,38022L,38023L,38024L,38025L,38026L,38027L, -38028L,38029L,38030L,38031L,38032L,38033L,38034L,38035L,38036L,38037L, -38038L,38039L,38040L,38041L,38042L,38043L,38044L,38045L,38046L,38047L, -38048L,38049L,38050L,38051L,38052L,38053L,38054L,38055L,38056L,38057L, -38058L,38059L,38060L,38061L,38062L,38063L,38064L,38065L,38066L,38067L, -38068L,38069L,38070L,38071L,38072L,38073L,38074L,38075L,38076L,38077L, -38078L,38079L,38080L,38081L,38082L,38083L,38084L,38085L,38086L,38087L, -38088L,38089L,38090L,38091L,38092L,38093L,38094L,38095L,38096L,38097L, -38098L,38099L,38100L,38101L,38102L,38103L,38104L,38105L,38106L,38107L, -38108L,38109L,38110L,38111L,38112L,38113L,38114L,38115L,38116L,38117L, -38118L,38119L,38120L,38121L,38122L,38123L,38124L,38125L,38126L,38127L, -38128L,38129L,38130L,38131L,38132L,38133L,38134L,38135L,38136L,38137L, -38138L,38139L,38140L,38141L,38142L,38143L,38144L,38145L,38146L,38147L, -38148L,38149L,38150L,38151L,38152L,38153L,38154L,38155L,38156L,38157L, -38158L,38159L,38160L,38161L,38162L,38163L,38164L,38165L,38166L,38167L, -38168L,38169L,38170L,38171L,38172L,38173L,38174L,38175L,38176L,38177L, -38178L,38179L,38180L,38181L,38182L,38183L,38184L,38185L,38186L,38187L, -38188L,38189L,38190L,38191L,38192L,38193L,38194L,38195L,38196L,38197L, -38198L,38199L,38200L,38201L,38202L,38203L,38204L,38205L,38206L,38207L, -38208L,38209L,38210L,38211L,38212L,38213L,38214L,38215L,38216L,38217L, -38218L,38219L,38220L,38221L,38222L,38223L,38224L,38225L,38226L,38227L, -38228L,38229L,38230L,38231L,38232L,38233L,38234L,38235L,38236L,38237L, -38238L,38239L,38240L,38241L,38242L,38243L,38244L,38245L,38246L,38247L, -38248L,38249L,38250L,38251L,38252L,38253L,38254L,38255L,38256L,38257L, -38258L,38259L,38260L,38261L,38262L,38263L,38264L,38265L,38266L,38267L, -38268L,38269L,38270L,38271L,38272L,38273L,38274L,38275L,38276L,38277L, -38278L,38279L,38280L,38281L,38282L,38283L,38284L,38285L,38286L,38287L, -38288L,38289L,38290L,38291L,38292L,38293L,38294L,38295L,38296L,38297L, -38298L,38299L,38300L,38301L,38302L,38303L,38304L,38305L,38306L,38307L, -38308L,38309L,38310L,38311L,38312L,38313L,38314L,38315L,38316L,38317L, -38318L,38319L,38320L,38321L,38322L,38323L,38324L,38325L,38326L,38327L, -38328L,38329L,38330L,38331L,38332L,38333L,38334L,38335L,38336L,38337L, -38338L,38339L,38340L,38341L,38342L,38343L,38344L,38345L,38346L,38347L, -38348L,38349L,38350L,38351L,38352L,38353L,38354L,38355L,38356L,38357L, -38358L,38359L,38360L,38361L,38362L,38363L,38364L,38365L,38366L,38367L, -38368L,38369L,38370L,38371L,38372L,38373L,38374L,38375L,38376L,38377L, -38378L,38379L,38380L,38381L,38382L,38383L,38384L,38385L,38386L,38387L, -38388L,38389L,38390L,38391L,38392L,38393L,38394L,38395L,38396L,38397L, -38398L,38399L,38400L,38401L,38402L,38403L,38404L,38405L,38406L,38407L, -38408L,38409L,38410L,38411L,38412L,38413L,38414L,38415L,38416L,38417L, -38418L,38419L,38420L,38421L,38422L,38423L,38424L,38425L,38426L,38427L, -38428L,38429L,38430L,38431L,38432L,38433L,38434L,38435L,38436L,38437L, -38438L,38439L,38440L,38441L,38442L,38443L,38444L,38445L,38446L,38447L, -38448L,38449L,38450L,38451L,38452L,38453L,38454L,38455L,38456L,38457L, -38458L,38459L,38460L,38461L,38462L,38463L,38464L,38465L,38466L,38467L, -38468L,38469L,38470L,38471L,38472L,38473L,38474L,38475L,38476L,38477L, -38478L,38479L,38480L,38481L,38482L,38483L,38484L,38485L,38486L,38487L, -38488L,38489L,38490L,38491L,38492L,38493L,38494L,38495L,38496L,38497L, -38498L,38499L,38500L,38501L,38502L,38503L,38504L,38505L,38506L,38507L, -38508L,38509L,38510L,38511L,38512L,38513L,38514L,38515L,38516L,38517L, -38518L,38519L,38520L,38521L,38522L,38523L,38524L,38525L,38526L,38527L, -38528L,38529L,38530L,38531L,38532L,38533L,38534L,38535L,38536L,38537L, -38538L,38539L,38540L,38541L,38542L,38543L,38544L,38545L,38546L,38547L, -38548L,38549L,38550L,38551L,38552L,38553L,38554L,38555L,38556L,38557L, -38558L,38559L,38560L,38561L,38562L,38563L,38564L,38565L,38566L,38567L, -38568L,38569L,38570L,38571L,38572L,38573L,38574L,38575L,38576L,38577L, -38578L,38579L,38580L,38581L,38582L,38583L,38584L,38585L,38586L,38587L, -38588L,38589L,38590L,38591L,38592L,38593L,38594L,38595L,38596L,38597L, -38598L,38599L,38600L,38601L,38602L,38603L,38604L,38605L,38606L,38607L, -38608L,38609L,38610L,38611L,38612L,38613L,38614L,38615L,38616L,38617L, -38618L,38619L,38620L,38621L,38622L,38623L,38624L,38625L,38626L,38627L, -38628L,38629L,38630L,38631L,38632L,38633L,38634L,38635L,38636L,38637L, -38638L,38639L,38640L,38641L,38642L,38643L,38644L,38645L,38646L,38647L, -38648L,38649L,38650L,38651L,38652L,38653L,38654L,38655L,38656L,38657L, -38658L,38659L,38660L,38661L,38662L,38663L,38664L,38665L,38666L,38667L, -38668L,38669L,38670L,38671L,38672L,38673L,38674L,38675L,38676L,38677L, -38678L,38679L,38680L,38681L,38682L,38683L,38684L,38685L,38686L,38687L, -38688L,38689L,38690L,38691L,38692L,38693L,38694L,38695L,38696L,38697L, -38698L,38699L,38700L,38701L,38702L,38703L,38704L,38705L,38706L,38707L, -38708L,38709L,38710L,38711L,38712L,38713L,38714L,38715L,38716L,38717L, -38718L,38719L,38720L,38721L,38722L,38723L,38724L,38725L,38726L,38727L, -38728L,38729L,38730L,38731L,38732L,38733L,38734L,38735L,38736L,38737L, -38738L,38739L,38740L,38741L,38742L,38743L,38744L,38745L,38746L,38747L, -38748L,38749L,38750L,38751L,38752L,38753L,38754L,38755L,38756L,38757L, -38758L,38759L,38760L,38761L,38762L,38763L,38764L,38765L,38766L,38767L, -38768L,38769L,38770L,38771L,38772L,38773L,38774L,38775L,38776L,38777L, -38778L,38779L,38780L,38781L,38782L,38783L,38784L,38785L,38786L,38787L, -38788L,38789L,38790L,38791L,38792L,38793L,38794L,38795L,38796L,38797L, -38798L,38799L,38800L,38801L,38802L,38803L,38804L,38805L,38806L,38807L, -38808L,38809L,38810L,38811L,38812L,38813L,38814L,38815L,38816L,38817L, -38818L,38819L,38820L,38821L,38822L,38823L,38824L,38825L,38826L,38827L, -38828L,38829L,38830L,38831L,38832L,38833L,38834L,38835L,38836L,38837L, -38838L,38839L,38840L,38841L,38842L,38843L,38844L,38845L,38846L,38847L, -38848L,38849L,38850L,38851L,38852L,38853L,38854L,38855L,38856L,38857L, -38858L,38859L,38860L,38861L,38862L,38863L,38864L,38865L,38866L,38867L, -38868L,38869L,38870L,38871L,38872L,38873L,38874L,38875L,38876L,38877L, -38878L,38879L,38880L,38881L,38882L,38883L,38884L,38885L,38886L,38887L, -38888L,38889L,38890L,38891L,38892L,38893L,38894L,38895L,38896L,38897L, -38898L,38899L,38900L,38901L,38902L,38903L,38904L,38905L,38906L,38907L, -38908L,38909L,38910L,38911L,38912L,38913L,38914L,38915L,38916L,38917L, -38918L,38919L,38920L,38921L,38922L,38923L,38924L,38925L,38926L,38927L, -38928L,38929L,38930L,38931L,38932L,38933L,38934L,38935L,38936L,38937L, -38938L,38939L,38940L,38941L,38942L,38943L,38944L,38945L,38946L,38947L, -38948L,38949L,38950L,38951L,38952L,38953L,38954L,38955L,38956L,38957L, -38958L,38959L,38960L,38961L,38962L,38963L,38964L,38965L,38966L,38967L, -38968L,38969L,38970L,38971L,38972L,38973L,38974L,38975L,38976L,38977L, -38978L,38979L,38980L,38981L,38982L,38983L,38984L,38985L,38986L,38987L, -38988L,38989L,38990L,38991L,38992L,38993L,38994L,38995L,38996L,38997L, -38998L,38999L,39000L,39001L,39002L,39003L,39004L,39005L,39006L,39007L, -39008L,39009L,39010L,39011L,39012L,39013L,39014L,39015L,39016L,39017L, -39018L,39019L,39020L,39021L,39022L,39023L,39024L,39025L,39026L,39027L, -39028L,39029L,39030L,39031L,39032L,39033L,39034L,39035L,39036L,39037L, -39038L,39039L,39040L,39041L,39042L,39043L,39044L,39045L,39046L,39047L, -39048L,39049L,39050L,39051L,39052L,39053L,39054L,39055L,39056L,39057L, -39058L,39059L,39060L,39061L,39062L,39063L,39064L,39065L,39066L,39067L, -39068L,39069L,39070L,39071L,39072L,39073L,39074L,39075L,39076L,39077L, -39078L,39079L,39080L,39081L,39082L,39083L,39084L,39085L,39086L,39087L, -39088L,39089L,39090L,39091L,39092L,39093L,39094L,39095L,39096L,39097L, -39098L,39099L,39100L,39101L,39102L,39103L,39104L,39105L,39106L,39107L, -39108L,39109L,39110L,39111L,39112L,39113L,39114L,39115L,39116L,39117L, -39118L,39119L,39120L,39121L,39122L,39123L,39124L,39125L,39126L,39127L, -39128L,39129L,39130L,39131L,39132L,39133L,39134L,39135L,39136L,39137L, -39138L,39139L,39140L,39141L,39142L,39143L,39144L,39145L,39146L,39147L, -39148L,39149L,39150L,39151L,39152L,39153L,39154L,39155L,39156L,39157L, -39158L,39159L,39160L,39161L,39162L,39163L,39164L,39165L,39166L,39167L, -39168L,39169L,39170L,39171L,39172L,39173L,39174L,39175L,39176L,39177L, -39178L,39179L,39180L,39181L,39182L,39183L,39184L,39185L,39186L,39187L, -39188L,39189L,39190L,39191L,39192L,39193L,39194L,39195L,39196L,39197L, -39198L,39199L,39200L,39201L,39202L,39203L,39204L,39205L,39206L,39207L, -39208L,39209L,39210L,39211L,39212L,39213L,39214L,39215L,39216L,39217L, -39218L,39219L,39220L,39221L,39222L,39223L,39224L,39225L,39226L,39227L, -39228L,39229L,39230L,39231L,39232L,39233L,39234L,39235L,39236L,39237L, -39238L,39239L,39240L,39241L,39242L,39243L,39244L,39245L,39246L,39247L, -39248L,39249L,39250L,39251L,39252L,39253L,39254L,39255L,39256L,39257L, -39258L,39259L,39260L,39261L,39262L,39263L,39264L,39265L,39266L,39267L, -39268L,39269L,39270L,39271L,39272L,39273L,39274L,39275L,39276L,39277L, -39278L,39279L,39280L,39281L,39282L,39283L,39284L,39285L,39286L,39287L, -39288L,39289L,39290L,39291L,39292L,39293L,39294L,39295L,39296L,39297L, -39298L,39299L,39300L,39301L,39302L,39303L,39304L,39305L,39306L,39307L, -39308L,39309L,39310L,39311L,39312L,39313L,39314L,39315L,39316L,39317L, -39318L,39319L,39320L,39321L,39322L,39323L,39324L,39325L,39326L,39327L, -39328L,39329L,39330L,39331L,39332L,39333L,39334L,39335L,39336L,39337L, -39338L,39339L,39340L,39341L,39342L,39343L,39344L,39345L,39346L,39347L, -39348L,39349L,39350L,39351L,39352L,39353L,39354L,39355L,39356L,39357L, -39358L,39359L,39360L,39361L,39362L,39363L,39364L,39365L,39366L,39367L, -39368L,39369L,39370L,39371L,39372L,39373L,39374L,39375L,39376L,39377L, -39378L,39379L,39380L,39381L,39382L,39383L,39384L,39385L,39386L,39387L, -39388L,39389L,39390L,39391L,39392L,39393L,39394L,39395L,39396L,39397L, -39398L,39399L,39400L,39401L,39402L,39403L,39404L,39405L,39406L,39407L, -39408L,39409L,39410L,39411L,39412L,39413L,39414L,39415L,39416L,39417L, -39418L,39419L,39420L,39421L,39422L,39423L,39424L,39425L,39426L,39427L, -39428L,39429L,39430L,39431L,39432L,39433L,39434L,39435L,39436L,39437L, -39438L,39439L,39440L,39441L,39442L,39443L,39444L,39445L,39446L,39447L, -39448L,39449L,39450L,39451L,39452L,39453L,39454L,39455L,39456L,39457L, -39458L,39459L,39460L,39461L,39462L,39463L,39464L,39465L,39466L,39467L, -39468L,39469L,39470L,39471L,39472L,39473L,39474L,39475L,39476L,39477L, -39478L,39479L,39480L,39481L,39482L,39483L,39484L,39485L,39486L,39487L, -39488L,39489L,39490L,39491L,39492L,39493L,39494L,39495L,39496L,39497L, -39498L,39499L,39500L,39501L,39502L,39503L,39504L,39505L,39506L,39507L, -39508L,39509L,39510L,39511L,39512L,39513L,39514L,39515L,39516L,39517L, -39518L,39519L,39520L,39521L,39522L,39523L,39524L,39525L,39526L,39527L, -39528L,39529L,39530L,39531L,39532L,39533L,39534L,39535L,39536L,39537L, -39538L,39539L,39540L,39541L,39542L,39543L,39544L,39545L,39546L,39547L, -39548L,39549L,39550L,39551L,39552L,39553L,39554L,39555L,39556L,39557L, -39558L,39559L,39560L,39561L,39562L,39563L,39564L,39565L,39566L,39567L, -39568L,39569L,39570L,39571L,39572L,39573L,39574L,39575L,39576L,39577L, -39578L,39579L,39580L,39581L,39582L,39583L,39584L,39585L,39586L,39587L, -39588L,39589L,39590L,39591L,39592L,39593L,39594L,39595L,39596L,39597L, -39598L,39599L,39600L,39601L,39602L,39603L,39604L,39605L,39606L,39607L, -39608L,39609L,39610L,39611L,39612L,39613L,39614L,39615L,39616L,39617L, -39618L,39619L,39620L,39621L,39622L,39623L,39624L,39625L,39626L,39627L, -39628L,39629L,39630L,39631L,39632L,39633L,39634L,39635L,39636L,39637L, -39638L,39639L,39640L,39641L,39642L,39643L,39644L,39645L,39646L,39647L, -39648L,39649L,39650L,39651L,39652L,39653L,39654L,39655L,39656L,39657L, -39658L,39659L,39660L,39661L,39662L,39663L,39664L,39665L,39666L,39667L, -39668L,39669L,39670L,39671L,39672L,39673L,39674L,39675L,39676L,39677L, -39678L,39679L,39680L,39681L,39682L,39683L,39684L,39685L,39686L,39687L, -39688L,39689L,39690L,39691L,39692L,39693L,39694L,39695L,39696L,39697L, -39698L,39699L,39700L,39701L,39702L,39703L,39704L,39705L,39706L,39707L, -39708L,39709L,39710L,39711L,39712L,39713L,39714L,39715L,39716L,39717L, -39718L,39719L,39720L,39721L,39722L,39723L,39724L,39725L,39726L,39727L, -39728L,39729L,39730L,39731L,39732L,39733L,39734L,39735L,39736L,39737L, -39738L,39739L,39740L,39741L,39742L,39743L,39744L,39745L,39746L,39747L, -39748L,39749L,39750L,39751L,39752L,39753L,39754L,39755L,39756L,39757L, -39758L,39759L,39760L,39761L,39762L,39763L,39764L,39765L,39766L,39767L, -39768L,39769L,39770L,39771L,39772L,39773L,39774L,39775L,39776L,39777L, -39778L,39779L,39780L,39781L,39782L,39783L,39784L,39785L,39786L,39787L, -39788L,39789L,39790L,39791L,39792L,39793L,39794L,39795L,39796L,39797L, -39798L,39799L,39800L,39801L,39802L,39803L,39804L,39805L,39806L,39807L, -39808L,39809L,39810L,39811L,39812L,39813L,39814L,39815L,39816L,39817L, -39818L,39819L,39820L,39821L,39822L,39823L,39824L,39825L,39826L,39827L, -39828L,39829L,39830L,39831L,39832L,39833L,39834L,39835L,39836L,39837L, -39838L,39839L,39840L,39841L,39842L,39843L,39844L,39845L,39846L,39847L, -39848L,39849L,39850L,39851L,39852L,39853L,39854L,39855L,39856L,39857L, -39858L,39859L,39860L,39861L,39862L,39863L,39864L,39865L,39866L,39867L, -39868L,39869L,39870L,39871L,39872L,39873L,39874L,39875L,39876L,39877L, -39878L,39879L,39880L,39881L,39882L,39883L,39884L,39885L,39886L,39887L, -39888L,39889L,39890L,39891L,39892L,39893L,39894L,39895L,39896L,39897L, -39898L,39899L,39900L,39901L,39902L,39903L,39904L,39905L,39906L,39907L, -39908L,39909L,39910L,39911L,39912L,39913L,39914L,39915L,39916L,39917L, -39918L,39919L,39920L,39921L,39922L,39923L,39924L,39925L,39926L,39927L, -39928L,39929L,39930L,39931L,39932L,39933L,39934L,39935L,39936L,39937L, -39938L,39939L,39940L,39941L,39942L,39943L,39944L,39945L,39946L,39947L, -39948L,39949L,39950L,39951L,39952L,39953L,39954L,39955L,39956L,39957L, -39958L,39959L,39960L,39961L,39962L,39963L,39964L,39965L,39966L,39967L, -39968L,39969L,39970L,39971L,39972L,39973L,39974L,39975L,39976L,39977L, -39978L,39979L,39980L,39981L,39982L,39983L,39984L,39985L,39986L,39987L, -39988L,39989L,39990L,39991L,39992L,39993L,39994L,39995L,39996L,39997L, -39998L,39999L,40000L,40001L,40002L,40003L,40004L,40005L,40006L,40007L, -40008L,40009L,40010L,40011L,40012L,40013L,40014L,40015L,40016L,40017L, -40018L,40019L,40020L,40021L,40022L,40023L,40024L,40025L,40026L,40027L, -40028L,40029L,40030L,40031L,40032L,40033L,40034L,40035L,40036L,40037L, -40038L,40039L,40040L,40041L,40042L,40043L,40044L,40045L,40046L,40047L, -40048L,40049L,40050L,40051L,40052L,40053L,40054L,40055L,40056L,40057L, -40058L,40059L,40060L,40061L,40062L,40063L,40064L,40065L,40066L,40067L, -40068L,40069L,40070L,40071L,40072L,40073L,40074L,40075L,40076L,40077L, -40078L,40079L,40080L,40081L,40082L,40083L,40084L,40085L,40086L,40087L, -40088L,40089L,40090L,40091L,40092L,40093L,40094L,40095L,40096L,40097L, -40098L,40099L,40100L,40101L,40102L,40103L,40104L,40105L,40106L,40107L, -40108L,40109L,40110L,40111L,40112L,40113L,40114L,40115L,40116L,40117L, -40118L,40119L,40120L,40121L,40122L,40123L,40124L,40125L,40126L,40127L, -40128L,40129L,40130L,40131L,40132L,40133L,40134L,40135L,40136L,40137L, -40138L,40139L,40140L,40141L,40142L,40143L,40144L,40145L,40146L,40147L, -40148L,40149L,40150L,40151L,40152L,40153L,40154L,40155L,40156L,40157L, -40158L,40159L,40160L,40161L,40162L,40163L,40164L,40165L,40166L,40167L, -40168L,40169L,40170L,40171L,40172L,40173L,40174L,40175L,40176L,40177L, -40178L,40179L,40180L,40181L,40182L,40183L,40184L,40185L,40186L,40187L, -40188L,40189L,40190L,40191L,40192L,40193L,40194L,40195L,40196L,40197L, -40198L,40199L,40200L,40201L,40202L,40203L,40204L,40205L,40206L,40207L, -40208L,40209L,40210L,40211L,40212L,40213L,40214L,40215L,40216L,40217L, -40218L,40219L,40220L,40221L,40222L,40223L,40224L,40225L,40226L,40227L, -40228L,40229L,40230L,40231L,40232L,40233L,40234L,40235L,40236L,40237L, -40238L,40239L,40240L,40241L,40242L,40243L,40244L,40245L,40246L,40247L, -40248L,40249L,40250L,40251L,40252L,40253L,40254L,40255L,40256L,40257L, -40258L,40259L,40260L,40261L,40262L,40263L,40264L,40265L,40266L,40267L, -40268L,40269L,40270L,40271L,40272L,40273L,40274L,40275L,40276L,40277L, -40278L,40279L,40280L,40281L,40282L,40283L,40284L,40285L,40286L,40287L, -40288L,40289L,40290L,40291L,40292L,40293L,40294L,40295L,40296L,40297L, -40298L,40299L,40300L,40301L,40302L,40303L,40304L,40305L,40306L,40307L, -40308L,40309L,40310L,40311L,40312L,40313L,40314L,40315L,40316L,40317L, -40318L,40319L,40320L,40321L,40322L,40323L,40324L,40325L,40326L,40327L, -40328L,40329L,40330L,40331L,40332L,40333L,40334L,40335L,40336L,40337L, -40338L,40339L,40340L,40341L,40342L,40343L,40344L,40345L,40346L,40347L, -40348L,40349L,40350L,40351L,40352L,40353L,40354L,40355L,40356L,40357L, -40358L,40359L,40360L,40361L,40362L,40363L,40364L,40365L,40366L,40367L, -40368L,40369L,40370L,40371L,40372L,40373L,40374L,40375L,40376L,40377L, -40378L,40379L,40380L,40381L,40382L,40383L,40384L,40385L,40386L,40387L, -40388L,40389L,40390L,40391L,40392L,40393L,40394L,40395L,40396L,40397L, -40398L,40399L,40400L,40401L,40402L,40403L,40404L,40405L,40406L,40407L, -40408L,40409L,40410L,40411L,40412L,40413L,40414L,40415L,40416L,40417L, -40418L,40419L,40420L,40421L,40422L,40423L,40424L,40425L,40426L,40427L, -40428L,40429L,40430L,40431L,40432L,40433L,40434L,40435L,40436L,40437L, -40438L,40439L,40440L,40441L,40442L,40443L,40444L,40445L,40446L,40447L, -40448L,40449L,40450L,40451L,40452L,40453L,40454L,40455L,40456L,40457L, -40458L,40459L,40460L,40461L,40462L,40463L,40464L,40465L,40466L,40467L, -40468L,40469L,40470L,40471L,40472L,40473L,40474L,40475L,40476L,40477L, -40478L,40479L,40480L,40481L,40482L,40483L,40484L,40485L,40486L,40487L, -40488L,40489L,40490L,40491L,40492L,40493L,40494L,40495L,40496L,40497L, -40498L,40499L,40500L,40501L,40502L,40503L,40504L,40505L,40506L,40507L, -40508L,40509L,40510L,40511L,40512L,40513L,40514L,40515L,40516L,40517L, -40518L,40519L,40520L,40521L,40522L,40523L,40524L,40525L,40526L,40527L, -40528L,40529L,40530L,40531L,40532L,40533L,40534L,40535L,40536L,40537L, -40538L,40539L,40540L,40541L,40542L,40543L,40544L,40545L,40546L,40547L, -40548L,40549L,40550L,40551L,40552L,40553L,40554L,40555L,40556L,40557L, -40558L,40559L,40560L,40561L,40562L,40563L,40564L,40565L,40566L,40567L, -40568L,40569L,40570L,40571L,40572L,40573L,40574L,40575L,40576L,40577L, -40578L,40579L,40580L,40581L,40582L,40583L,40584L,40585L,40586L,40587L, -40588L,40589L,40590L,40591L,40592L,40593L,40594L,40595L,40596L,40597L, -40598L,40599L,40600L,40601L,40602L,40603L,40604L,40605L,40606L,40607L, -40608L,40609L,40610L,40611L,40612L,40613L,40614L,40615L,40616L,40617L, -40618L,40619L,40620L,40621L,40622L,40623L,40624L,40625L,40626L,40627L, -40628L,40629L,40630L,40631L,40632L,40633L,40634L,40635L,40636L,40637L, -40638L,40639L,40640L,40641L,40642L,40643L,40644L,40645L,40646L,40647L, -40648L,40649L,40650L,40651L,40652L,40653L,40654L,40655L,40656L,40657L, -40658L,40659L,40660L,40661L,40662L,40663L,40664L,40665L,40666L,40667L, -40668L,40669L,40670L,40671L,40672L,40673L,40674L,40675L,40676L,40677L, -40678L,40679L,40680L,40681L,40682L,40683L,40684L,40685L,40686L,40687L, -40688L,40689L,40690L,40691L,40692L,40693L,40694L,40695L,40696L,40697L, -40698L,40699L,40700L,40701L,40702L,40703L,40704L,40705L,40706L,40707L, -40708L,40709L,40710L,40711L,40712L,40713L,40714L,40715L,40716L,40717L, -40718L,40719L,40720L,40721L,40722L,40723L,40724L,40725L,40726L,40727L, -40728L,40729L,40730L,40731L,40732L,40733L,40734L,40735L,40736L,40737L, -40738L,40739L,40740L,40741L,40742L,40743L,40744L,40745L,40746L,40747L, -40748L,40749L,40750L,40751L,40752L,40753L,40754L,40755L,40756L,40757L, -40758L,40759L,40760L,40761L,40762L,40763L,40764L,40765L,40766L,40767L, -40768L,40769L,40770L,40771L,40772L,40773L,40774L,40775L,40776L,40777L, -40778L,40779L,40780L,40781L,40782L,40783L,40784L,40785L,40786L,40787L, -40788L,40789L,40790L,40791L,40792L,40793L,40794L,40795L,40796L,40797L, -40798L,40799L,40800L,40801L,40802L,40803L,40804L,40805L,40806L,40807L, -40808L,40809L,40810L,40811L,40812L,40813L,40814L,40815L,40816L,40817L, -40818L,40819L,40820L,40821L,40822L,40823L,40824L,40825L,40826L,40827L, -40828L,40829L,40830L,40831L,40832L,40833L,40834L,40835L,40836L,40837L, -40838L,40839L,40840L,40841L,40842L,40843L,40844L,40845L,40846L,40847L, -40848L,40849L,40850L,40851L,40852L,40853L,40854L,40855L,40856L,40857L, -40858L,40859L,40860L,40861L,40862L,40863L,40864L,40865L,40866L,40867L, -40868L,40869L,40870L,40871L,40872L,40873L,40874L,40875L,40876L,40877L, -40878L,40879L,40880L,40881L,40882L,40883L,40884L,40885L,40886L,40887L, -40888L,40889L,40890L,40891L,40892L,40893L,40894L,40895L,40896L,40897L, -40898L,40899L,40900L,40901L,40902L,40903L,40904L,40905L,40906L,40907L, -40908L,40909L,40910L,40911L,40912L,40913L,40914L,40915L,40916L,40917L, -40918L,40919L,40920L,40921L,40922L,40923L,40924L,40925L,40926L,40927L, -40928L,40929L,40930L,40931L,40932L,40933L,40934L,40935L,40936L,40937L, -40938L,40939L,40940L,40941L,40942L,40943L,40944L,40945L,40946L,40947L, -40948L,40949L,40950L,40951L,40952L,40953L,40954L,40955L,40956L,40957L, -40958L,40959L,40960L,40961L,40962L,40963L,40964L,40965L,40966L,40967L, -40968L,40969L,40970L,40971L,40972L,40973L,40974L,40975L,40976L,40977L, -40978L,40979L,40980L,40981L,40982L,40983L,40984L,40985L,40986L,40987L, -40988L,40989L,40990L,40991L,40992L,40993L,40994L,40995L,40996L,40997L, -40998L,40999L,41000L,41001L,41002L,41003L,41004L,41005L,41006L,41007L, -41008L,41009L,41010L,41011L,41012L,41013L,41014L,41015L,41016L,41017L, -41018L,41019L,41020L,41021L,41022L,41023L,41024L,41025L,41026L,41027L, -41028L,41029L,41030L,41031L,41032L,41033L,41034L,41035L,41036L,41037L, -41038L,41039L,41040L,41041L,41042L,41043L,41044L,41045L,41046L,41047L, -41048L,41049L,41050L,41051L,41052L,41053L,41054L,41055L,41056L,41057L, -41058L,41059L,41060L,41061L,41062L,41063L,41064L,41065L,41066L,41067L, -41068L,41069L,41070L,41071L,41072L,41073L,41074L,41075L,41076L,41077L, -41078L,41079L,41080L,41081L,41082L,41083L,41084L,41085L,41086L,41087L, -41088L,41089L,41090L,41091L,41092L,41093L,41094L,41095L,41096L,41097L, -41098L,41099L,41100L,41101L,41102L,41103L,41104L,41105L,41106L,41107L, -41108L,41109L,41110L,41111L,41112L,41113L,41114L,41115L,41116L,41117L, -41118L,41119L,41120L,41121L,41122L,41123L,41124L,41125L,41126L,41127L, -41128L,41129L,41130L,41131L,41132L,41133L,41134L,41135L,41136L,41137L, -41138L,41139L,41140L,41141L,41142L,41143L,41144L,41145L,41146L,41147L, -41148L,41149L,41150L,41151L,41152L,41153L,41154L,41155L,41156L,41157L, -41158L,41159L,41160L,41161L,41162L,41163L,41164L,41165L,41166L,41167L, -41168L,41169L,41170L,41171L,41172L,41173L,41174L,41175L,41176L,41177L, -41178L,41179L,41180L,41181L,41182L,41183L,41184L,41185L,41186L,41187L, -41188L,41189L,41190L,41191L,41192L,41193L,41194L,41195L,41196L,41197L, -41198L,41199L,41200L,41201L,41202L,41203L,41204L,41205L,41206L,41207L, -41208L,41209L,41210L,41211L,41212L,41213L,41214L,41215L,41216L,41217L, -41218L,41219L,41220L,41221L,41222L,41223L,41224L,41225L,41226L,41227L, -41228L,41229L,41230L,41231L,41232L,41233L,41234L,41235L,41236L,41237L, -41238L,41239L,41240L,41241L,41242L,41243L,41244L,41245L,41246L,41247L, -41248L,41249L,41250L,41251L,41252L,41253L,41254L,41255L,41256L,41257L, -41258L,41259L,41260L,41261L,41262L,41263L,41264L,41265L,41266L,41267L, -41268L,41269L,41270L,41271L,41272L,41273L,41274L,41275L,41276L,41277L, -41278L,41279L,41280L,41281L,41282L,41283L,41284L,41285L,41286L,41287L, -41288L,41289L,41290L,41291L,41292L,41293L,41294L,41295L,41296L,41297L, -41298L,41299L,41300L,41301L,41302L,41303L,41304L,41305L,41306L,41307L, -41308L,41309L,41310L,41311L,41312L,41313L,41314L,41315L,41316L,41317L, -41318L,41319L,41320L,41321L,41322L,41323L,41324L,41325L,41326L,41327L, -41328L,41329L,41330L,41331L,41332L,41333L,41334L,41335L,41336L,41337L, -41338L,41339L,41340L,41341L,41342L,41343L,41344L,41345L,41346L,41347L, -41348L,41349L,41350L,41351L,41352L,41353L,41354L,41355L,41356L,41357L, -41358L,41359L,41360L,41361L,41362L,41363L,41364L,41365L,41366L,41367L, -41368L,41369L,41370L,41371L,41372L,41373L,41374L,41375L,41376L,41377L, -41378L,41379L,41380L,41381L,41382L,41383L,41384L,41385L,41386L,41387L, -41388L,41389L,41390L,41391L,41392L,41393L,41394L,41395L,41396L,41397L, -41398L,41399L,41400L,41401L,41402L,41403L,41404L,41405L,41406L,41407L, -41408L,41409L,41410L,41411L,41412L,41413L,41414L,41415L,41416L,41417L, -41418L,41419L,41420L,41421L,41422L,41423L,41424L,41425L,41426L,41427L, -41428L,41429L,41430L,41431L,41432L,41433L,41434L,41435L,41436L,41437L, -41438L,41439L,41440L,41441L,41442L,41443L,41444L,41445L,41446L,41447L, -41448L,41449L,41450L,41451L,41452L,41453L,41454L,41455L,41456L,41457L, -41458L,41459L,41460L,41461L,41462L,41463L,41464L,41465L,41466L,41467L, -41468L,41469L,41470L,41471L,41472L,41473L,41474L,41475L,41476L,41477L, -41478L,41479L,41480L,41481L,41482L,41483L,41484L,41485L,41486L,41487L, -41488L,41489L,41490L,41491L,41492L,41493L,41494L,41495L,41496L,41497L, -41498L,41499L,41500L,41501L,41502L,41503L,41504L,41505L,41506L,41507L, -41508L,41509L,41510L,41511L,41512L,41513L,41514L,41515L,41516L,41517L, -41518L,41519L,41520L,41521L,41522L,41523L,41524L,41525L,41526L,41527L, -41528L,41529L,41530L,41531L,41532L,41533L,41534L,41535L,41536L,41537L, -41538L,41539L,41540L,41541L,41542L,41543L,41544L,41545L,41546L,41547L, -41548L,41549L,41550L,41551L,41552L,41553L,41554L,41555L,41556L,41557L, -41558L,41559L,41560L,41561L,41562L,41563L,41564L,41565L,41566L,41567L, -41568L,41569L,41570L,41571L,41572L,41573L,41574L,41575L,41576L,41577L, -41578L,41579L,41580L,41581L,41582L,41583L,41584L,41585L,41586L,41587L, -41588L,41589L,41590L,41591L,41592L,41593L,41594L,41595L,41596L,41597L, -41598L,41599L,41600L,41601L,41602L,41603L,41604L,41605L,41606L,41607L, -41608L,41609L,41610L,41611L,41612L,41613L,41614L,41615L,41616L,41617L, -41618L,41619L,41620L,41621L,41622L,41623L,41624L,41625L,41626L,41627L, -41628L,41629L,41630L,41631L,41632L,41633L,41634L,41635L,41636L,41637L, -41638L,41639L,41640L,41641L,41642L,41643L,41644L,41645L,41646L,41647L, -41648L,41649L,41650L,41651L,41652L,41653L,41654L,41655L,41656L,41657L, -41658L,41659L,41660L,41661L,41662L,41663L,41664L,41665L,41666L,41667L, -41668L,41669L,41670L,41671L,41672L,41673L,41674L,41675L,41676L,41677L, -41678L,41679L,41680L,41681L,41682L,41683L,41684L,41685L,41686L,41687L, -41688L,41689L,41690L,41691L,41692L,41693L,41694L,41695L,41696L,41697L, -41698L,41699L,41700L,41701L,41702L,41703L,41704L,41705L,41706L,41707L, -41708L,41709L,41710L,41711L,41712L,41713L,41714L,41715L,41716L,41717L, -41718L,41719L,41720L,41721L,41722L,41723L,41724L,41725L,41726L,41727L, -41728L,41729L,41730L,41731L,41732L,41733L,41734L,41735L,41736L,41737L, -41738L,41739L,41740L,41741L,41742L,41743L,41744L,41745L,41746L,41747L, -41748L,41749L,41750L,41751L,41752L,41753L,41754L,41755L,41756L,41757L, -41758L,41759L,41760L,41761L,41762L,41763L,41764L,41765L,41766L,41767L, -41768L,41769L,41770L,41771L,41772L,41773L,41774L,41775L,41776L,41777L, -41778L,41779L,41780L,41781L,41782L,41783L,41784L,41785L,41786L,41787L, -41788L,41789L,41790L,41791L,41792L,41793L,41794L,41795L,41796L,41797L, -41798L,41799L,41800L,41801L,41802L,41803L,41804L,41805L,41806L,41807L, -41808L,41809L,41810L,41811L,41812L,41813L,41814L,41815L,41816L,41817L, -41818L,41819L,41820L,41821L,41822L,41823L,41824L,41825L,41826L,41827L, -41828L,41829L,41830L,41831L,41832L,41833L,41834L,41835L,41836L,41837L, -41838L,41839L,41840L,41841L,41842L,41843L,41844L,41845L,41846L,41847L, -41848L,41849L,41850L,41851L,41852L,41853L,41854L,41855L,41856L,41857L, -41858L,41859L,41860L,41861L,41862L,41863L,41864L,41865L,41866L,41867L, -41868L,41869L,41870L,41871L,41872L,41873L,41874L,41875L,41876L,41877L, -41878L,41879L,41880L,41881L,41882L,41883L,41884L,41885L,41886L,41887L, -41888L,41889L,41890L,41891L,41892L,41893L,41894L,41895L,41896L,41897L, -41898L,41899L,41900L,41901L,41902L,41903L,41904L,41905L,41906L,41907L, -41908L,41909L,41910L,41911L,41912L,41913L,41914L,41915L,41916L,41917L, -41918L,41919L,41920L,41921L,41922L,41923L,41924L,41925L,41926L,41927L, -41928L,41929L,41930L,41931L,41932L,41933L,41934L,41935L,41936L,41937L, -41938L,41939L,41940L,41941L,41942L,41943L,41944L,41945L,41946L,41947L, -41948L,41949L,41950L,41951L,41952L,41953L,41954L,41955L,41956L,41957L, -41958L,41959L,41960L,41961L,41962L,41963L,41964L,41965L,41966L,41967L, -41968L,41969L,41970L,41971L,41972L,41973L,41974L,41975L,41976L,41977L, -41978L,41979L,41980L,41981L,41982L,41983L,41984L,41985L,41986L,41987L, -41988L,41989L,41990L,41991L,41992L,41993L,41994L,41995L,41996L,41997L, -41998L,41999L,42000L,42001L,42002L,42003L,42004L,42005L,42006L,42007L, -42008L,42009L,42010L,42011L,42012L,42013L,42014L,42015L,42016L,42017L, -42018L,42019L,42020L,42021L,42022L,42023L,42024L,42025L,42026L,42027L, -42028L,42029L,42030L,42031L,42032L,42033L,42034L,42035L,42036L,42037L, -42038L,42039L,42040L,42041L,42042L,42043L,42044L,42045L,42046L,42047L, -42048L,42049L,42050L,42051L,42052L,42053L,42054L,42055L,42056L,42057L, -42058L,42059L,42060L,42061L,42062L,42063L,42064L,42065L,42066L,42067L, -42068L,42069L,42070L,42071L,42072L,42073L,42074L,42075L,42076L,42077L, -42078L,42079L,42080L,42081L,42082L,42083L,42084L,42085L,42086L,42087L, -42088L,42089L,42090L,42091L,42092L,42093L,42094L,42095L,42096L,42097L, -42098L,42099L,42100L,42101L,42102L,42103L,42104L,42105L,42106L,42107L, -42108L,42109L,42110L,42111L,42112L,42113L,42114L,42115L,42116L,42117L, -42118L,42119L,42120L,42121L,42122L,42123L,42124L,42125L,42126L,42127L, -42128L,42129L,42130L,42131L,42132L,42133L,42134L,42135L,42136L,42137L, -42138L,42139L,42140L,42141L,42142L,42143L,42144L,42145L,42146L,42147L, -42148L,42149L,42150L,42151L,42152L,42153L,42154L,42155L,42156L,42157L, -42158L,42159L,42160L,42161L,42162L,42163L,42164L,42165L,42166L,42167L, -42168L,42169L,42170L,42171L,42172L,42173L,42174L,42175L,42176L,42177L, -42178L,42179L,42180L,42181L,42182L,42183L,42184L,42185L,42186L,42187L, -42188L,42189L,42190L,42191L,42192L,42193L,42194L,42195L,42196L,42197L, -42198L,42199L,42200L,42201L,42202L,42203L,42204L,42205L,42206L,42207L, -42208L,42209L,42210L,42211L,42212L,42213L,42214L,42215L,42216L,42217L, -42218L,42219L,42220L,42221L,42222L,42223L,42224L,42225L,42226L,42227L, -42228L,42229L,42230L,42231L,42232L,42233L,42234L,42235L,42236L,42237L, -42238L,42239L,42240L,42241L,42242L,42243L,42244L,42245L,42246L,42247L, -42248L,42249L,42250L,42251L,42252L,42253L,42254L,42255L,42256L,42257L, -42258L,42259L,42260L,42261L,42262L,42263L,42264L,42265L,42266L,42267L, -42268L,42269L,42270L,42271L,42272L,42273L,42274L,42275L,42276L,42277L, -42278L,42279L,42280L,42281L,42282L,42283L,42284L,42285L,42286L,42287L, -42288L,42289L,42290L,42291L,42292L,42293L,42294L,42295L,42296L,42297L, -42298L,42299L,42300L,42301L,42302L,42303L,42304L,42305L,42306L,42307L, -42308L,42309L,42310L,42311L,42312L,42313L,42314L,42315L,42316L,42317L, -42318L,42319L,42320L,42321L,42322L,42323L,42324L,42325L,42326L,42327L, -42328L,42329L,42330L,42331L,42332L,42333L,42334L,42335L,42336L,42337L, -42338L,42339L,42340L,42341L,42342L,42343L,42344L,42345L,42346L,42347L, -42348L,42349L,42350L,42351L,42352L,42353L,42354L,42355L,42356L,42357L, -42358L,42359L,42360L,42361L,42362L,42363L,42364L,42365L,42366L,42367L, -42368L,42369L,42370L,42371L,42372L,42373L,42374L,42375L,42376L,42377L, -42378L,42379L,42380L,42381L,42382L,42383L,42384L,42385L,42386L,42387L, -42388L,42389L,42390L,42391L,42392L,42393L,42394L,42395L,42396L,42397L, -42398L,42399L,42400L,42401L,42402L,42403L,42404L,42405L,42406L,42407L, -42408L,42409L,42410L,42411L,42412L,42413L,42414L,42415L,42416L,42417L, -42418L,42419L,42420L,42421L,42422L,42423L,42424L,42425L,42426L,42427L, -42428L,42429L,42430L,42431L,42432L,42433L,42434L,42435L,42436L,42437L, -42438L,42439L,42440L,42441L,42442L,42443L,42444L,42445L,42446L,42447L, -42448L,42449L,42450L,42451L,42452L,42453L,42454L,42455L,42456L,42457L, -42458L,42459L,42460L,42461L,42462L,42463L,42464L,42465L,42466L,42467L, -42468L,42469L,42470L,42471L,42472L,42473L,42474L,42475L,42476L,42477L, -42478L,42479L,42480L,42481L,42482L,42483L,42484L,42485L,42486L,42487L, -42488L,42489L,42490L,42491L,42492L,42493L,42494L,42495L,42496L,42497L, -42498L,42499L,42500L,42501L,42502L,42503L,42504L,42505L,42506L,42507L, -42508L,42509L,42510L,42511L,42512L,42513L,42514L,42515L,42516L,42517L, -42518L,42519L,42520L,42521L,42522L,42523L,42524L,42525L,42526L,42527L, -42528L,42529L,42530L,42531L,42532L,42533L,42534L,42535L,42536L,42537L, -42538L,42539L,42540L,42541L,42542L,42543L,42544L,42545L,42546L,42547L, -42548L,42549L,42550L,42551L,42552L,42553L,42554L,42555L,42556L,42557L, -42558L,42559L,42560L,42560L,42562L,42562L,42564L,42564L,42566L,42566L, -42568L,42568L,42570L,42570L,42572L,42572L,42574L,42574L,42576L,42576L, -42578L,42578L,42580L,42580L,42582L,42582L,42584L,42584L,42586L,42586L, -42588L,42588L,42590L,42590L,42592L,42592L,42594L,42594L,42596L,42596L, -42598L,42598L,42600L,42600L,42602L,42602L,42604L,42604L,42606L,42607L, -42608L,42609L,42610L,42611L,42612L,42613L,42614L,42615L,42616L,42617L, -42618L,42619L,42620L,42621L,42622L,42623L,42624L,42624L,42626L,42626L, -42628L,42628L,42630L,42630L,42632L,42632L,42634L,42634L,42636L,42636L, -42638L,42638L,42640L,42640L,42642L,42642L,42644L,42644L,42646L,42646L, -42648L,42648L,42650L,42650L,42652L,42653L,42654L,42655L,42656L,42657L, -42658L,42659L,42660L,42661L,42662L,42663L,42664L,42665L,42666L,42667L, -42668L,42669L,42670L,42671L,42672L,42673L,42674L,42675L,42676L,42677L, -42678L,42679L,42680L,42681L,42682L,42683L,42684L,42685L,42686L,42687L, -42688L,42689L,42690L,42691L,42692L,42693L,42694L,42695L,42696L,42697L, -42698L,42699L,42700L,42701L,42702L,42703L,42704L,42705L,42706L,42707L, -42708L,42709L,42710L,42711L,42712L,42713L,42714L,42715L,42716L,42717L, -42718L,42719L,42720L,42721L,42722L,42723L,42724L,42725L,42726L,42727L, -42728L,42729L,42730L,42731L,42732L,42733L,42734L,42735L,42736L,42737L, -42738L,42739L,42740L,42741L,42742L,42743L,42744L,42745L,42746L,42747L, -42748L,42749L,42750L,42751L,42752L,42753L,42754L,42755L,42756L,42757L, -42758L,42759L,42760L,42761L,42762L,42763L,42764L,42765L,42766L,42767L, -42768L,42769L,42770L,42771L,42772L,42773L,42774L,42775L,42776L,42777L, -42778L,42779L,42780L,42781L,42782L,42783L,42784L,42785L,42786L,42786L, -42788L,42788L,42790L,42790L,42792L,42792L,42794L,42794L,42796L,42796L, -42798L,42798L,42800L,42801L,42802L,42802L,42804L,42804L,42806L,42806L, -42808L,42808L,42810L,42810L,42812L,42812L,42814L,42814L,42816L,42816L, -42818L,42818L,42820L,42820L,42822L,42822L,42824L,42824L,42826L,42826L, -42828L,42828L,42830L,42830L,42832L,42832L,42834L,42834L,42836L,42836L, -42838L,42838L,42840L,42840L,42842L,42842L,42844L,42844L,42846L,42846L, -42848L,42848L,42850L,42850L,42852L,42852L,42854L,42854L,42856L,42856L, -42858L,42858L,42860L,42860L,42862L,42862L,42864L,42865L,42866L,42867L, -42868L,42869L,42870L,42871L,42872L,42873L,42873L,42875L,42875L,42877L, -42878L,42878L,42880L,42880L,42882L,42882L,42884L,42884L,42886L,42886L, -42888L,42889L,42890L,42891L,42891L,42893L,42894L,42895L,42896L,42896L, -42898L,42898L,42948L,42901L,42902L,42902L,42904L,42904L,42906L,42906L, -42908L,42908L,42910L,42910L,42912L,42912L,42914L,42914L,42916L,42916L, -42918L,42918L,42920L,42920L,42922L,42923L,42924L,42925L,42926L,42927L, -42928L,42929L,42930L,42931L,42932L,42932L,42934L,42934L,42936L,42936L, -42938L,42938L,42940L,42940L,42942L,42942L,42944L,42945L,42946L,42946L, -42948L,42949L,42950L,42951L,42952L,42953L,42954L,42955L,42956L,42957L, -42958L,42959L,42960L,42961L,42962L,42963L,42964L,42965L,42966L,42967L, -42968L,42969L,42970L,42971L,42972L,42973L,42974L,42975L,42976L,42977L, -42978L,42979L,42980L,42981L,42982L,42983L,42984L,42985L,42986L,42987L, -42988L,42989L,42990L,42991L,42992L,42993L,42994L,42995L,42996L,42997L, -42998L,42999L,43000L,43001L,43002L,43003L,43004L,43005L,43006L,43007L, -43008L,43009L,43010L,43011L,43012L,43013L,43014L,43015L,43016L,43017L, -43018L,43019L,43020L,43021L,43022L,43023L,43024L,43025L,43026L,43027L, -43028L,43029L,43030L,43031L,43032L,43033L,43034L,43035L,43036L,43037L, -43038L,43039L,43040L,43041L,43042L,43043L,43044L,43045L,43046L,43047L, -43048L,43049L,43050L,43051L,43052L,43053L,43054L,43055L,43056L,43057L, -43058L,43059L,43060L,43061L,43062L,43063L,43064L,43065L,43066L,43067L, -43068L,43069L,43070L,43071L,43072L,43073L,43074L,43075L,43076L,43077L, -43078L,43079L,43080L,43081L,43082L,43083L,43084L,43085L,43086L,43087L, -43088L,43089L,43090L,43091L,43092L,43093L,43094L,43095L,43096L,43097L, -43098L,43099L,43100L,43101L,43102L,43103L,43104L,43105L,43106L,43107L, -43108L,43109L,43110L,43111L,43112L,43113L,43114L,43115L,43116L,43117L, -43118L,43119L,43120L,43121L,43122L,43123L,43124L,43125L,43126L,43127L, -43128L,43129L,43130L,43131L,43132L,43133L,43134L,43135L,43136L,43137L, -43138L,43139L,43140L,43141L,43142L,43143L,43144L,43145L,43146L,43147L, -43148L,43149L,43150L,43151L,43152L,43153L,43154L,43155L,43156L,43157L, -43158L,43159L,43160L,43161L,43162L,43163L,43164L,43165L,43166L,43167L, -43168L,43169L,43170L,43171L,43172L,43173L,43174L,43175L,43176L,43177L, -43178L,43179L,43180L,43181L,43182L,43183L,43184L,43185L,43186L,43187L, -43188L,43189L,43190L,43191L,43192L,43193L,43194L,43195L,43196L,43197L, -43198L,43199L,43200L,43201L,43202L,43203L,43204L,43205L,43206L,43207L, -43208L,43209L,43210L,43211L,43212L,43213L,43214L,43215L,43216L,43217L, -43218L,43219L,43220L,43221L,43222L,43223L,43224L,43225L,43226L,43227L, -43228L,43229L,43230L,43231L,43232L,43233L,43234L,43235L,43236L,43237L, -43238L,43239L,43240L,43241L,43242L,43243L,43244L,43245L,43246L,43247L, -43248L,43249L,43250L,43251L,43252L,43253L,43254L,43255L,43256L,43257L, -43258L,43259L,43260L,43261L,43262L,43263L,43264L,43265L,43266L,43267L, -43268L,43269L,43270L,43271L,43272L,43273L,43274L,43275L,43276L,43277L, -43278L,43279L,43280L,43281L,43282L,43283L,43284L,43285L,43286L,43287L, -43288L,43289L,43290L,43291L,43292L,43293L,43294L,43295L,43296L,43297L, -43298L,43299L,43300L,43301L,43302L,43303L,43304L,43305L,43306L,43307L, -43308L,43309L,43310L,43311L,43312L,43313L,43314L,43315L,43316L,43317L, -43318L,43319L,43320L,43321L,43322L,43323L,43324L,43325L,43326L,43327L, -43328L,43329L,43330L,43331L,43332L,43333L,43334L,43335L,43336L,43337L, -43338L,43339L,43340L,43341L,43342L,43343L,43344L,43345L,43346L,43347L, -43348L,43349L,43350L,43351L,43352L,43353L,43354L,43355L,43356L,43357L, -43358L,43359L,43360L,43361L,43362L,43363L,43364L,43365L,43366L,43367L, -43368L,43369L,43370L,43371L,43372L,43373L,43374L,43375L,43376L,43377L, -43378L,43379L,43380L,43381L,43382L,43383L,43384L,43385L,43386L,43387L, -43388L,43389L,43390L,43391L,43392L,43393L,43394L,43395L,43396L,43397L, -43398L,43399L,43400L,43401L,43402L,43403L,43404L,43405L,43406L,43407L, -43408L,43409L,43410L,43411L,43412L,43413L,43414L,43415L,43416L,43417L, -43418L,43419L,43420L,43421L,43422L,43423L,43424L,43425L,43426L,43427L, -43428L,43429L,43430L,43431L,43432L,43433L,43434L,43435L,43436L,43437L, -43438L,43439L,43440L,43441L,43442L,43443L,43444L,43445L,43446L,43447L, -43448L,43449L,43450L,43451L,43452L,43453L,43454L,43455L,43456L,43457L, -43458L,43459L,43460L,43461L,43462L,43463L,43464L,43465L,43466L,43467L, -43468L,43469L,43470L,43471L,43472L,43473L,43474L,43475L,43476L,43477L, -43478L,43479L,43480L,43481L,43482L,43483L,43484L,43485L,43486L,43487L, -43488L,43489L,43490L,43491L,43492L,43493L,43494L,43495L,43496L,43497L, -43498L,43499L,43500L,43501L,43502L,43503L,43504L,43505L,43506L,43507L, -43508L,43509L,43510L,43511L,43512L,43513L,43514L,43515L,43516L,43517L, -43518L,43519L,43520L,43521L,43522L,43523L,43524L,43525L,43526L,43527L, -43528L,43529L,43530L,43531L,43532L,43533L,43534L,43535L,43536L,43537L, -43538L,43539L,43540L,43541L,43542L,43543L,43544L,43545L,43546L,43547L, -43548L,43549L,43550L,43551L,43552L,43553L,43554L,43555L,43556L,43557L, -43558L,43559L,43560L,43561L,43562L,43563L,43564L,43565L,43566L,43567L, -43568L,43569L,43570L,43571L,43572L,43573L,43574L,43575L,43576L,43577L, -43578L,43579L,43580L,43581L,43582L,43583L,43584L,43585L,43586L,43587L, -43588L,43589L,43590L,43591L,43592L,43593L,43594L,43595L,43596L,43597L, -43598L,43599L,43600L,43601L,43602L,43603L,43604L,43605L,43606L,43607L, -43608L,43609L,43610L,43611L,43612L,43613L,43614L,43615L,43616L,43617L, -43618L,43619L,43620L,43621L,43622L,43623L,43624L,43625L,43626L,43627L, -43628L,43629L,43630L,43631L,43632L,43633L,43634L,43635L,43636L,43637L, -43638L,43639L,43640L,43641L,43642L,43643L,43644L,43645L,43646L,43647L, -43648L,43649L,43650L,43651L,43652L,43653L,43654L,43655L,43656L,43657L, -43658L,43659L,43660L,43661L,43662L,43663L,43664L,43665L,43666L,43667L, -43668L,43669L,43670L,43671L,43672L,43673L,43674L,43675L,43676L,43677L, -43678L,43679L,43680L,43681L,43682L,43683L,43684L,43685L,43686L,43687L, -43688L,43689L,43690L,43691L,43692L,43693L,43694L,43695L,43696L,43697L, -43698L,43699L,43700L,43701L,43702L,43703L,43704L,43705L,43706L,43707L, -43708L,43709L,43710L,43711L,43712L,43713L,43714L,43715L,43716L,43717L, -43718L,43719L,43720L,43721L,43722L,43723L,43724L,43725L,43726L,43727L, -43728L,43729L,43730L,43731L,43732L,43733L,43734L,43735L,43736L,43737L, -43738L,43739L,43740L,43741L,43742L,43743L,43744L,43745L,43746L,43747L, -43748L,43749L,43750L,43751L,43752L,43753L,43754L,43755L,43756L,43757L, -43758L,43759L,43760L,43761L,43762L,43763L,43764L,43765L,43766L,43767L, -43768L,43769L,43770L,43771L,43772L,43773L,43774L,43775L,43776L,43777L, -43778L,43779L,43780L,43781L,43782L,43783L,43784L,43785L,43786L,43787L, -43788L,43789L,43790L,43791L,43792L,43793L,43794L,43795L,43796L,43797L, -43798L,43799L,43800L,43801L,43802L,43803L,43804L,43805L,43806L,43807L, -43808L,43809L,43810L,43811L,43812L,43813L,43814L,43815L,43816L,43817L, -43818L,43819L,43820L,43821L,43822L,43823L,43824L,43825L,43826L,43827L, -43828L,43829L,43830L,43831L,43832L,43833L,43834L,43835L,43836L,43837L, -43838L,43839L,43840L,43841L,43842L,43843L,43844L,43845L,43846L,43847L, -43848L,43849L,43850L,43851L,43852L,43853L,43854L,43855L,43856L,43857L, -43858L,42931L,43860L,43861L,43862L,43863L,43864L,43865L,43866L,43867L, -43868L,43869L,43870L,43871L,43872L,43873L,43874L,43875L,43876L,43877L, -43878L,43879L,43880L,43881L,43882L,43883L,43884L,43885L,43886L,43887L,5024, -5025,5026,5027,5028,5029,5030,5031,5032,5033,5034,5035,5036,5037,5038,5039, -5040,5041,5042,5043,5044,5045,5046,5047,5048,5049,5050,5051,5052,5053,5054, -5055,5056,5057,5058,5059,5060,5061,5062,5063,5064,5065,5066,5067,5068,5069, -5070,5071,5072,5073,5074,5075,5076,5077,5078,5079,5080,5081,5082,5083,5084, -5085,5086,5087,5088,5089,5090,5091,5092,5093,5094,5095,5096,5097,5098,5099, -5100,5101,5102,5103,43968L,43969L,43970L,43971L,43972L,43973L,43974L, -43975L,43976L,43977L,43978L,43979L,43980L,43981L,43982L,43983L,43984L, -43985L,43986L,43987L,43988L,43989L,43990L,43991L,43992L,43993L,43994L, -43995L,43996L,43997L,43998L,43999L,44000L,44001L,44002L,44003L,44004L, -44005L,44006L,44007L,44008L,44009L,44010L,44011L,44012L,44013L,44014L, -44015L,44016L,44017L,44018L,44019L,44020L,44021L,44022L,44023L,44024L, -44025L,44026L,44027L,44028L,44029L,44030L,44031L,44032L,44033L,44034L, -44035L,44036L,44037L,44038L,44039L,44040L,44041L,44042L,44043L,44044L, -44045L,44046L,44047L,44048L,44049L,44050L,44051L,44052L,44053L,44054L, -44055L,44056L,44057L,44058L,44059L,44060L,44061L,44062L,44063L,44064L, -44065L,44066L,44067L,44068L,44069L,44070L,44071L,44072L,44073L,44074L, -44075L,44076L,44077L,44078L,44079L,44080L,44081L,44082L,44083L,44084L, -44085L,44086L,44087L,44088L,44089L,44090L,44091L,44092L,44093L,44094L, -44095L,44096L,44097L,44098L,44099L,44100L,44101L,44102L,44103L,44104L, -44105L,44106L,44107L,44108L,44109L,44110L,44111L,44112L,44113L,44114L, -44115L,44116L,44117L,44118L,44119L,44120L,44121L,44122L,44123L,44124L, -44125L,44126L,44127L,44128L,44129L,44130L,44131L,44132L,44133L,44134L, -44135L,44136L,44137L,44138L,44139L,44140L,44141L,44142L,44143L,44144L, -44145L,44146L,44147L,44148L,44149L,44150L,44151L,44152L,44153L,44154L, -44155L,44156L,44157L,44158L,44159L,44160L,44161L,44162L,44163L,44164L, -44165L,44166L,44167L,44168L,44169L,44170L,44171L,44172L,44173L,44174L, -44175L,44176L,44177L,44178L,44179L,44180L,44181L,44182L,44183L,44184L, -44185L,44186L,44187L,44188L,44189L,44190L,44191L,44192L,44193L,44194L, -44195L,44196L,44197L,44198L,44199L,44200L,44201L,44202L,44203L,44204L, -44205L,44206L,44207L,44208L,44209L,44210L,44211L,44212L,44213L,44214L, -44215L,44216L,44217L,44218L,44219L,44220L,44221L,44222L,44223L,44224L, -44225L,44226L,44227L,44228L,44229L,44230L,44231L,44232L,44233L,44234L, -44235L,44236L,44237L,44238L,44239L,44240L,44241L,44242L,44243L,44244L, -44245L,44246L,44247L,44248L,44249L,44250L,44251L,44252L,44253L,44254L, -44255L,44256L,44257L,44258L,44259L,44260L,44261L,44262L,44263L,44264L, -44265L,44266L,44267L,44268L,44269L,44270L,44271L,44272L,44273L,44274L, -44275L,44276L,44277L,44278L,44279L,44280L,44281L,44282L,44283L,44284L, -44285L,44286L,44287L,44288L,44289L,44290L,44291L,44292L,44293L,44294L, -44295L,44296L,44297L,44298L,44299L,44300L,44301L,44302L,44303L,44304L, -44305L,44306L,44307L,44308L,44309L,44310L,44311L,44312L,44313L,44314L, -44315L,44316L,44317L,44318L,44319L,44320L,44321L,44322L,44323L,44324L, -44325L,44326L,44327L,44328L,44329L,44330L,44331L,44332L,44333L,44334L, -44335L,44336L,44337L,44338L,44339L,44340L,44341L,44342L,44343L,44344L, -44345L,44346L,44347L,44348L,44349L,44350L,44351L,44352L,44353L,44354L, -44355L,44356L,44357L,44358L,44359L,44360L,44361L,44362L,44363L,44364L, -44365L,44366L,44367L,44368L,44369L,44370L,44371L,44372L,44373L,44374L, -44375L,44376L,44377L,44378L,44379L,44380L,44381L,44382L,44383L,44384L, -44385L,44386L,44387L,44388L,44389L,44390L,44391L,44392L,44393L,44394L, -44395L,44396L,44397L,44398L,44399L,44400L,44401L,44402L,44403L,44404L, -44405L,44406L,44407L,44408L,44409L,44410L,44411L,44412L,44413L,44414L, -44415L,44416L,44417L,44418L,44419L,44420L,44421L,44422L,44423L,44424L, -44425L,44426L,44427L,44428L,44429L,44430L,44431L,44432L,44433L,44434L, -44435L,44436L,44437L,44438L,44439L,44440L,44441L,44442L,44443L,44444L, -44445L,44446L,44447L,44448L,44449L,44450L,44451L,44452L,44453L,44454L, -44455L,44456L,44457L,44458L,44459L,44460L,44461L,44462L,44463L,44464L, -44465L,44466L,44467L,44468L,44469L,44470L,44471L,44472L,44473L,44474L, -44475L,44476L,44477L,44478L,44479L,44480L,44481L,44482L,44483L,44484L, -44485L,44486L,44487L,44488L,44489L,44490L,44491L,44492L,44493L,44494L, -44495L,44496L,44497L,44498L,44499L,44500L,44501L,44502L,44503L,44504L, -44505L,44506L,44507L,44508L,44509L,44510L,44511L,44512L,44513L,44514L, -44515L,44516L,44517L,44518L,44519L,44520L,44521L,44522L,44523L,44524L, -44525L,44526L,44527L,44528L,44529L,44530L,44531L,44532L,44533L,44534L, -44535L,44536L,44537L,44538L,44539L,44540L,44541L,44542L,44543L,44544L, -44545L,44546L,44547L,44548L,44549L,44550L,44551L,44552L,44553L,44554L, -44555L,44556L,44557L,44558L,44559L,44560L,44561L,44562L,44563L,44564L, -44565L,44566L,44567L,44568L,44569L,44570L,44571L,44572L,44573L,44574L, -44575L,44576L,44577L,44578L,44579L,44580L,44581L,44582L,44583L,44584L, -44585L,44586L,44587L,44588L,44589L,44590L,44591L,44592L,44593L,44594L, -44595L,44596L,44597L,44598L,44599L,44600L,44601L,44602L,44603L,44604L, -44605L,44606L,44607L,44608L,44609L,44610L,44611L,44612L,44613L,44614L, -44615L,44616L,44617L,44618L,44619L,44620L,44621L,44622L,44623L,44624L, -44625L,44626L,44627L,44628L,44629L,44630L,44631L,44632L,44633L,44634L, -44635L,44636L,44637L,44638L,44639L,44640L,44641L,44642L,44643L,44644L, -44645L,44646L,44647L,44648L,44649L,44650L,44651L,44652L,44653L,44654L, -44655L,44656L,44657L,44658L,44659L,44660L,44661L,44662L,44663L,44664L, -44665L,44666L,44667L,44668L,44669L,44670L,44671L,44672L,44673L,44674L, -44675L,44676L,44677L,44678L,44679L,44680L,44681L,44682L,44683L,44684L, -44685L,44686L,44687L,44688L,44689L,44690L,44691L,44692L,44693L,44694L, -44695L,44696L,44697L,44698L,44699L,44700L,44701L,44702L,44703L,44704L, -44705L,44706L,44707L,44708L,44709L,44710L,44711L,44712L,44713L,44714L, -44715L,44716L,44717L,44718L,44719L,44720L,44721L,44722L,44723L,44724L, -44725L,44726L,44727L,44728L,44729L,44730L,44731L,44732L,44733L,44734L, -44735L,44736L,44737L,44738L,44739L,44740L,44741L,44742L,44743L,44744L, -44745L,44746L,44747L,44748L,44749L,44750L,44751L,44752L,44753L,44754L, -44755L,44756L,44757L,44758L,44759L,44760L,44761L,44762L,44763L,44764L, -44765L,44766L,44767L,44768L,44769L,44770L,44771L,44772L,44773L,44774L, -44775L,44776L,44777L,44778L,44779L,44780L,44781L,44782L,44783L,44784L, -44785L,44786L,44787L,44788L,44789L,44790L,44791L,44792L,44793L,44794L, -44795L,44796L,44797L,44798L,44799L,44800L,44801L,44802L,44803L,44804L, -44805L,44806L,44807L,44808L,44809L,44810L,44811L,44812L,44813L,44814L, -44815L,44816L,44817L,44818L,44819L,44820L,44821L,44822L,44823L,44824L, -44825L,44826L,44827L,44828L,44829L,44830L,44831L,44832L,44833L,44834L, -44835L,44836L,44837L,44838L,44839L,44840L,44841L,44842L,44843L,44844L, -44845L,44846L,44847L,44848L,44849L,44850L,44851L,44852L,44853L,44854L, -44855L,44856L,44857L,44858L,44859L,44860L,44861L,44862L,44863L,44864L, -44865L,44866L,44867L,44868L,44869L,44870L,44871L,44872L,44873L,44874L, -44875L,44876L,44877L,44878L,44879L,44880L,44881L,44882L,44883L,44884L, -44885L,44886L,44887L,44888L,44889L,44890L,44891L,44892L,44893L,44894L, -44895L,44896L,44897L,44898L,44899L,44900L,44901L,44902L,44903L,44904L, -44905L,44906L,44907L,44908L,44909L,44910L,44911L,44912L,44913L,44914L, -44915L,44916L,44917L,44918L,44919L,44920L,44921L,44922L,44923L,44924L, -44925L,44926L,44927L,44928L,44929L,44930L,44931L,44932L,44933L,44934L, -44935L,44936L,44937L,44938L,44939L,44940L,44941L,44942L,44943L,44944L, -44945L,44946L,44947L,44948L,44949L,44950L,44951L,44952L,44953L,44954L, -44955L,44956L,44957L,44958L,44959L,44960L,44961L,44962L,44963L,44964L, -44965L,44966L,44967L,44968L,44969L,44970L,44971L,44972L,44973L,44974L, -44975L,44976L,44977L,44978L,44979L,44980L,44981L,44982L,44983L,44984L, -44985L,44986L,44987L,44988L,44989L,44990L,44991L,44992L,44993L,44994L, -44995L,44996L,44997L,44998L,44999L,45000L,45001L,45002L,45003L,45004L, -45005L,45006L,45007L,45008L,45009L,45010L,45011L,45012L,45013L,45014L, -45015L,45016L,45017L,45018L,45019L,45020L,45021L,45022L,45023L,45024L, -45025L,45026L,45027L,45028L,45029L,45030L,45031L,45032L,45033L,45034L, -45035L,45036L,45037L,45038L,45039L,45040L,45041L,45042L,45043L,45044L, -45045L,45046L,45047L,45048L,45049L,45050L,45051L,45052L,45053L,45054L, -45055L,45056L,45057L,45058L,45059L,45060L,45061L,45062L,45063L,45064L, -45065L,45066L,45067L,45068L,45069L,45070L,45071L,45072L,45073L,45074L, -45075L,45076L,45077L,45078L,45079L,45080L,45081L,45082L,45083L,45084L, -45085L,45086L,45087L,45088L,45089L,45090L,45091L,45092L,45093L,45094L, -45095L,45096L,45097L,45098L,45099L,45100L,45101L,45102L,45103L,45104L, -45105L,45106L,45107L,45108L,45109L,45110L,45111L,45112L,45113L,45114L, -45115L,45116L,45117L,45118L,45119L,45120L,45121L,45122L,45123L,45124L, -45125L,45126L,45127L,45128L,45129L,45130L,45131L,45132L,45133L,45134L, -45135L,45136L,45137L,45138L,45139L,45140L,45141L,45142L,45143L,45144L, -45145L,45146L,45147L,45148L,45149L,45150L,45151L,45152L,45153L,45154L, -45155L,45156L,45157L,45158L,45159L,45160L,45161L,45162L,45163L,45164L, -45165L,45166L,45167L,45168L,45169L,45170L,45171L,45172L,45173L,45174L, -45175L,45176L,45177L,45178L,45179L,45180L,45181L,45182L,45183L,45184L, -45185L,45186L,45187L,45188L,45189L,45190L,45191L,45192L,45193L,45194L, -45195L,45196L,45197L,45198L,45199L,45200L,45201L,45202L,45203L,45204L, -45205L,45206L,45207L,45208L,45209L,45210L,45211L,45212L,45213L,45214L, -45215L,45216L,45217L,45218L,45219L,45220L,45221L,45222L,45223L,45224L, -45225L,45226L,45227L,45228L,45229L,45230L,45231L,45232L,45233L,45234L, -45235L,45236L,45237L,45238L,45239L,45240L,45241L,45242L,45243L,45244L, -45245L,45246L,45247L,45248L,45249L,45250L,45251L,45252L,45253L,45254L, -45255L,45256L,45257L,45258L,45259L,45260L,45261L,45262L,45263L,45264L, -45265L,45266L,45267L,45268L,45269L,45270L,45271L,45272L,45273L,45274L, -45275L,45276L,45277L,45278L,45279L,45280L,45281L,45282L,45283L,45284L, -45285L,45286L,45287L,45288L,45289L,45290L,45291L,45292L,45293L,45294L, -45295L,45296L,45297L,45298L,45299L,45300L,45301L,45302L,45303L,45304L, -45305L,45306L,45307L,45308L,45309L,45310L,45311L,45312L,45313L,45314L, -45315L,45316L,45317L,45318L,45319L,45320L,45321L,45322L,45323L,45324L, -45325L,45326L,45327L,45328L,45329L,45330L,45331L,45332L,45333L,45334L, -45335L,45336L,45337L,45338L,45339L,45340L,45341L,45342L,45343L,45344L, -45345L,45346L,45347L,45348L,45349L,45350L,45351L,45352L,45353L,45354L, -45355L,45356L,45357L,45358L,45359L,45360L,45361L,45362L,45363L,45364L, -45365L,45366L,45367L,45368L,45369L,45370L,45371L,45372L,45373L,45374L, -45375L,45376L,45377L,45378L,45379L,45380L,45381L,45382L,45383L,45384L, -45385L,45386L,45387L,45388L,45389L,45390L,45391L,45392L,45393L,45394L, -45395L,45396L,45397L,45398L,45399L,45400L,45401L,45402L,45403L,45404L, -45405L,45406L,45407L,45408L,45409L,45410L,45411L,45412L,45413L,45414L, -45415L,45416L,45417L,45418L,45419L,45420L,45421L,45422L,45423L,45424L, -45425L,45426L,45427L,45428L,45429L,45430L,45431L,45432L,45433L,45434L, -45435L,45436L,45437L,45438L,45439L,45440L,45441L,45442L,45443L,45444L, -45445L,45446L,45447L,45448L,45449L,45450L,45451L,45452L,45453L,45454L, -45455L,45456L,45457L,45458L,45459L,45460L,45461L,45462L,45463L,45464L, -45465L,45466L,45467L,45468L,45469L,45470L,45471L,45472L,45473L,45474L, -45475L,45476L,45477L,45478L,45479L,45480L,45481L,45482L,45483L,45484L, -45485L,45486L,45487L,45488L,45489L,45490L,45491L,45492L,45493L,45494L, -45495L,45496L,45497L,45498L,45499L,45500L,45501L,45502L,45503L,45504L, -45505L,45506L,45507L,45508L,45509L,45510L,45511L,45512L,45513L,45514L, -45515L,45516L,45517L,45518L,45519L,45520L,45521L,45522L,45523L,45524L, -45525L,45526L,45527L,45528L,45529L,45530L,45531L,45532L,45533L,45534L, -45535L,45536L,45537L,45538L,45539L,45540L,45541L,45542L,45543L,45544L, -45545L,45546L,45547L,45548L,45549L,45550L,45551L,45552L,45553L,45554L, -45555L,45556L,45557L,45558L,45559L,45560L,45561L,45562L,45563L,45564L, -45565L,45566L,45567L,45568L,45569L,45570L,45571L,45572L,45573L,45574L, -45575L,45576L,45577L,45578L,45579L,45580L,45581L,45582L,45583L,45584L, -45585L,45586L,45587L,45588L,45589L,45590L,45591L,45592L,45593L,45594L, -45595L,45596L,45597L,45598L,45599L,45600L,45601L,45602L,45603L,45604L, -45605L,45606L,45607L,45608L,45609L,45610L,45611L,45612L,45613L,45614L, -45615L,45616L,45617L,45618L,45619L,45620L,45621L,45622L,45623L,45624L, -45625L,45626L,45627L,45628L,45629L,45630L,45631L,45632L,45633L,45634L, -45635L,45636L,45637L,45638L,45639L,45640L,45641L,45642L,45643L,45644L, -45645L,45646L,45647L,45648L,45649L,45650L,45651L,45652L,45653L,45654L, -45655L,45656L,45657L,45658L,45659L,45660L,45661L,45662L,45663L,45664L, -45665L,45666L,45667L,45668L,45669L,45670L,45671L,45672L,45673L,45674L, -45675L,45676L,45677L,45678L,45679L,45680L,45681L,45682L,45683L,45684L, -45685L,45686L,45687L,45688L,45689L,45690L,45691L,45692L,45693L,45694L, -45695L,45696L,45697L,45698L,45699L,45700L,45701L,45702L,45703L,45704L, -45705L,45706L,45707L,45708L,45709L,45710L,45711L,45712L,45713L,45714L, -45715L,45716L,45717L,45718L,45719L,45720L,45721L,45722L,45723L,45724L, -45725L,45726L,45727L,45728L,45729L,45730L,45731L,45732L,45733L,45734L, -45735L,45736L,45737L,45738L,45739L,45740L,45741L,45742L,45743L,45744L, -45745L,45746L,45747L,45748L,45749L,45750L,45751L,45752L,45753L,45754L, -45755L,45756L,45757L,45758L,45759L,45760L,45761L,45762L,45763L,45764L, -45765L,45766L,45767L,45768L,45769L,45770L,45771L,45772L,45773L,45774L, -45775L,45776L,45777L,45778L,45779L,45780L,45781L,45782L,45783L,45784L, -45785L,45786L,45787L,45788L,45789L,45790L,45791L,45792L,45793L,45794L, -45795L,45796L,45797L,45798L,45799L,45800L,45801L,45802L,45803L,45804L, -45805L,45806L,45807L,45808L,45809L,45810L,45811L,45812L,45813L,45814L, -45815L,45816L,45817L,45818L,45819L,45820L,45821L,45822L,45823L,45824L, -45825L,45826L,45827L,45828L,45829L,45830L,45831L,45832L,45833L,45834L, -45835L,45836L,45837L,45838L,45839L,45840L,45841L,45842L,45843L,45844L, -45845L,45846L,45847L,45848L,45849L,45850L,45851L,45852L,45853L,45854L, -45855L,45856L,45857L,45858L,45859L,45860L,45861L,45862L,45863L,45864L, -45865L,45866L,45867L,45868L,45869L,45870L,45871L,45872L,45873L,45874L, -45875L,45876L,45877L,45878L,45879L,45880L,45881L,45882L,45883L,45884L, -45885L,45886L,45887L,45888L,45889L,45890L,45891L,45892L,45893L,45894L, -45895L,45896L,45897L,45898L,45899L,45900L,45901L,45902L,45903L,45904L, -45905L,45906L,45907L,45908L,45909L,45910L,45911L,45912L,45913L,45914L, -45915L,45916L,45917L,45918L,45919L,45920L,45921L,45922L,45923L,45924L, -45925L,45926L,45927L,45928L,45929L,45930L,45931L,45932L,45933L,45934L, -45935L,45936L,45937L,45938L,45939L,45940L,45941L,45942L,45943L,45944L, -45945L,45946L,45947L,45948L,45949L,45950L,45951L,45952L,45953L,45954L, -45955L,45956L,45957L,45958L,45959L,45960L,45961L,45962L,45963L,45964L, -45965L,45966L,45967L,45968L,45969L,45970L,45971L,45972L,45973L,45974L, -45975L,45976L,45977L,45978L,45979L,45980L,45981L,45982L,45983L,45984L, -45985L,45986L,45987L,45988L,45989L,45990L,45991L,45992L,45993L,45994L, -45995L,45996L,45997L,45998L,45999L,46000L,46001L,46002L,46003L,46004L, -46005L,46006L,46007L,46008L,46009L,46010L,46011L,46012L,46013L,46014L, -46015L,46016L,46017L,46018L,46019L,46020L,46021L,46022L,46023L,46024L, -46025L,46026L,46027L,46028L,46029L,46030L,46031L,46032L,46033L,46034L, -46035L,46036L,46037L,46038L,46039L,46040L,46041L,46042L,46043L,46044L, -46045L,46046L,46047L,46048L,46049L,46050L,46051L,46052L,46053L,46054L, -46055L,46056L,46057L,46058L,46059L,46060L,46061L,46062L,46063L,46064L, -46065L,46066L,46067L,46068L,46069L,46070L,46071L,46072L,46073L,46074L, -46075L,46076L,46077L,46078L,46079L,46080L,46081L,46082L,46083L,46084L, -46085L,46086L,46087L,46088L,46089L,46090L,46091L,46092L,46093L,46094L, -46095L,46096L,46097L,46098L,46099L,46100L,46101L,46102L,46103L,46104L, -46105L,46106L,46107L,46108L,46109L,46110L,46111L,46112L,46113L,46114L, -46115L,46116L,46117L,46118L,46119L,46120L,46121L,46122L,46123L,46124L, -46125L,46126L,46127L,46128L,46129L,46130L,46131L,46132L,46133L,46134L, -46135L,46136L,46137L,46138L,46139L,46140L,46141L,46142L,46143L,46144L, -46145L,46146L,46147L,46148L,46149L,46150L,46151L,46152L,46153L,46154L, -46155L,46156L,46157L,46158L,46159L,46160L,46161L,46162L,46163L,46164L, -46165L,46166L,46167L,46168L,46169L,46170L,46171L,46172L,46173L,46174L, -46175L,46176L,46177L,46178L,46179L,46180L,46181L,46182L,46183L,46184L, -46185L,46186L,46187L,46188L,46189L,46190L,46191L,46192L,46193L,46194L, -46195L,46196L,46197L,46198L,46199L,46200L,46201L,46202L,46203L,46204L, -46205L,46206L,46207L,46208L,46209L,46210L,46211L,46212L,46213L,46214L, -46215L,46216L,46217L,46218L,46219L,46220L,46221L,46222L,46223L,46224L, -46225L,46226L,46227L,46228L,46229L,46230L,46231L,46232L,46233L,46234L, -46235L,46236L,46237L,46238L,46239L,46240L,46241L,46242L,46243L,46244L, -46245L,46246L,46247L,46248L,46249L,46250L,46251L,46252L,46253L,46254L, -46255L,46256L,46257L,46258L,46259L,46260L,46261L,46262L,46263L,46264L, -46265L,46266L,46267L,46268L,46269L,46270L,46271L,46272L,46273L,46274L, -46275L,46276L,46277L,46278L,46279L,46280L,46281L,46282L,46283L,46284L, -46285L,46286L,46287L,46288L,46289L,46290L,46291L,46292L,46293L,46294L, -46295L,46296L,46297L,46298L,46299L,46300L,46301L,46302L,46303L,46304L, -46305L,46306L,46307L,46308L,46309L,46310L,46311L,46312L,46313L,46314L, -46315L,46316L,46317L,46318L,46319L,46320L,46321L,46322L,46323L,46324L, -46325L,46326L,46327L,46328L,46329L,46330L,46331L,46332L,46333L,46334L, -46335L,46336L,46337L,46338L,46339L,46340L,46341L,46342L,46343L,46344L, -46345L,46346L,46347L,46348L,46349L,46350L,46351L,46352L,46353L,46354L, -46355L,46356L,46357L,46358L,46359L,46360L,46361L,46362L,46363L,46364L, -46365L,46366L,46367L,46368L,46369L,46370L,46371L,46372L,46373L,46374L, -46375L,46376L,46377L,46378L,46379L,46380L,46381L,46382L,46383L,46384L, -46385L,46386L,46387L,46388L,46389L,46390L,46391L,46392L,46393L,46394L, -46395L,46396L,46397L,46398L,46399L,46400L,46401L,46402L,46403L,46404L, -46405L,46406L,46407L,46408L,46409L,46410L,46411L,46412L,46413L,46414L, -46415L,46416L,46417L,46418L,46419L,46420L,46421L,46422L,46423L,46424L, -46425L,46426L,46427L,46428L,46429L,46430L,46431L,46432L,46433L,46434L, -46435L,46436L,46437L,46438L,46439L,46440L,46441L,46442L,46443L,46444L, -46445L,46446L,46447L,46448L,46449L,46450L,46451L,46452L,46453L,46454L, -46455L,46456L,46457L,46458L,46459L,46460L,46461L,46462L,46463L,46464L, -46465L,46466L,46467L,46468L,46469L,46470L,46471L,46472L,46473L,46474L, -46475L,46476L,46477L,46478L,46479L,46480L,46481L,46482L,46483L,46484L, -46485L,46486L,46487L,46488L,46489L,46490L,46491L,46492L,46493L,46494L, -46495L,46496L,46497L,46498L,46499L,46500L,46501L,46502L,46503L,46504L, -46505L,46506L,46507L,46508L,46509L,46510L,46511L,46512L,46513L,46514L, -46515L,46516L,46517L,46518L,46519L,46520L,46521L,46522L,46523L,46524L, -46525L,46526L,46527L,46528L,46529L,46530L,46531L,46532L,46533L,46534L, -46535L,46536L,46537L,46538L,46539L,46540L,46541L,46542L,46543L,46544L, -46545L,46546L,46547L,46548L,46549L,46550L,46551L,46552L,46553L,46554L, -46555L,46556L,46557L,46558L,46559L,46560L,46561L,46562L,46563L,46564L, -46565L,46566L,46567L,46568L,46569L,46570L,46571L,46572L,46573L,46574L, -46575L,46576L,46577L,46578L,46579L,46580L,46581L,46582L,46583L,46584L, -46585L,46586L,46587L,46588L,46589L,46590L,46591L,46592L,46593L,46594L, -46595L,46596L,46597L,46598L,46599L,46600L,46601L,46602L,46603L,46604L, -46605L,46606L,46607L,46608L,46609L,46610L,46611L,46612L,46613L,46614L, -46615L,46616L,46617L,46618L,46619L,46620L,46621L,46622L,46623L,46624L, -46625L,46626L,46627L,46628L,46629L,46630L,46631L,46632L,46633L,46634L, -46635L,46636L,46637L,46638L,46639L,46640L,46641L,46642L,46643L,46644L, -46645L,46646L,46647L,46648L,46649L,46650L,46651L,46652L,46653L,46654L, -46655L,46656L,46657L,46658L,46659L,46660L,46661L,46662L,46663L,46664L, -46665L,46666L,46667L,46668L,46669L,46670L,46671L,46672L,46673L,46674L, -46675L,46676L,46677L,46678L,46679L,46680L,46681L,46682L,46683L,46684L, -46685L,46686L,46687L,46688L,46689L,46690L,46691L,46692L,46693L,46694L, -46695L,46696L,46697L,46698L,46699L,46700L,46701L,46702L,46703L,46704L, -46705L,46706L,46707L,46708L,46709L,46710L,46711L,46712L,46713L,46714L, -46715L,46716L,46717L,46718L,46719L,46720L,46721L,46722L,46723L,46724L, -46725L,46726L,46727L,46728L,46729L,46730L,46731L,46732L,46733L,46734L, -46735L,46736L,46737L,46738L,46739L,46740L,46741L,46742L,46743L,46744L, -46745L,46746L,46747L,46748L,46749L,46750L,46751L,46752L,46753L,46754L, -46755L,46756L,46757L,46758L,46759L,46760L,46761L,46762L,46763L,46764L, -46765L,46766L,46767L,46768L,46769L,46770L,46771L,46772L,46773L,46774L, -46775L,46776L,46777L,46778L,46779L,46780L,46781L,46782L,46783L,46784L, -46785L,46786L,46787L,46788L,46789L,46790L,46791L,46792L,46793L,46794L, -46795L,46796L,46797L,46798L,46799L,46800L,46801L,46802L,46803L,46804L, -46805L,46806L,46807L,46808L,46809L,46810L,46811L,46812L,46813L,46814L, -46815L,46816L,46817L,46818L,46819L,46820L,46821L,46822L,46823L,46824L, -46825L,46826L,46827L,46828L,46829L,46830L,46831L,46832L,46833L,46834L, -46835L,46836L,46837L,46838L,46839L,46840L,46841L,46842L,46843L,46844L, -46845L,46846L,46847L,46848L,46849L,46850L,46851L,46852L,46853L,46854L, -46855L,46856L,46857L,46858L,46859L,46860L,46861L,46862L,46863L,46864L, -46865L,46866L,46867L,46868L,46869L,46870L,46871L,46872L,46873L,46874L, -46875L,46876L,46877L,46878L,46879L,46880L,46881L,46882L,46883L,46884L, -46885L,46886L,46887L,46888L,46889L,46890L,46891L,46892L,46893L,46894L, -46895L,46896L,46897L,46898L,46899L,46900L,46901L,46902L,46903L,46904L, -46905L,46906L,46907L,46908L,46909L,46910L,46911L,46912L,46913L,46914L, -46915L,46916L,46917L,46918L,46919L,46920L,46921L,46922L,46923L,46924L, -46925L,46926L,46927L,46928L,46929L,46930L,46931L,46932L,46933L,46934L, -46935L,46936L,46937L,46938L,46939L,46940L,46941L,46942L,46943L,46944L, -46945L,46946L,46947L,46948L,46949L,46950L,46951L,46952L,46953L,46954L, -46955L,46956L,46957L,46958L,46959L,46960L,46961L,46962L,46963L,46964L, -46965L,46966L,46967L,46968L,46969L,46970L,46971L,46972L,46973L,46974L, -46975L,46976L,46977L,46978L,46979L,46980L,46981L,46982L,46983L,46984L, -46985L,46986L,46987L,46988L,46989L,46990L,46991L,46992L,46993L,46994L, -46995L,46996L,46997L,46998L,46999L,47000L,47001L,47002L,47003L,47004L, -47005L,47006L,47007L,47008L,47009L,47010L,47011L,47012L,47013L,47014L, -47015L,47016L,47017L,47018L,47019L,47020L,47021L,47022L,47023L,47024L, -47025L,47026L,47027L,47028L,47029L,47030L,47031L,47032L,47033L,47034L, -47035L,47036L,47037L,47038L,47039L,47040L,47041L,47042L,47043L,47044L, -47045L,47046L,47047L,47048L,47049L,47050L,47051L,47052L,47053L,47054L, -47055L,47056L,47057L,47058L,47059L,47060L,47061L,47062L,47063L,47064L, -47065L,47066L,47067L,47068L,47069L,47070L,47071L,47072L,47073L,47074L, -47075L,47076L,47077L,47078L,47079L,47080L,47081L,47082L,47083L,47084L, -47085L,47086L,47087L,47088L,47089L,47090L,47091L,47092L,47093L,47094L, -47095L,47096L,47097L,47098L,47099L,47100L,47101L,47102L,47103L,47104L, -47105L,47106L,47107L,47108L,47109L,47110L,47111L,47112L,47113L,47114L, -47115L,47116L,47117L,47118L,47119L,47120L,47121L,47122L,47123L,47124L, -47125L,47126L,47127L,47128L,47129L,47130L,47131L,47132L,47133L,47134L, -47135L,47136L,47137L,47138L,47139L,47140L,47141L,47142L,47143L,47144L, -47145L,47146L,47147L,47148L,47149L,47150L,47151L,47152L,47153L,47154L, -47155L,47156L,47157L,47158L,47159L,47160L,47161L,47162L,47163L,47164L, -47165L,47166L,47167L,47168L,47169L,47170L,47171L,47172L,47173L,47174L, -47175L,47176L,47177L,47178L,47179L,47180L,47181L,47182L,47183L,47184L, -47185L,47186L,47187L,47188L,47189L,47190L,47191L,47192L,47193L,47194L, -47195L,47196L,47197L,47198L,47199L,47200L,47201L,47202L,47203L,47204L, -47205L,47206L,47207L,47208L,47209L,47210L,47211L,47212L,47213L,47214L, -47215L,47216L,47217L,47218L,47219L,47220L,47221L,47222L,47223L,47224L, -47225L,47226L,47227L,47228L,47229L,47230L,47231L,47232L,47233L,47234L, -47235L,47236L,47237L,47238L,47239L,47240L,47241L,47242L,47243L,47244L, -47245L,47246L,47247L,47248L,47249L,47250L,47251L,47252L,47253L,47254L, -47255L,47256L,47257L,47258L,47259L,47260L,47261L,47262L,47263L,47264L, -47265L,47266L,47267L,47268L,47269L,47270L,47271L,47272L,47273L,47274L, -47275L,47276L,47277L,47278L,47279L,47280L,47281L,47282L,47283L,47284L, -47285L,47286L,47287L,47288L,47289L,47290L,47291L,47292L,47293L,47294L, -47295L,47296L,47297L,47298L,47299L,47300L,47301L,47302L,47303L,47304L, -47305L,47306L,47307L,47308L,47309L,47310L,47311L,47312L,47313L,47314L, -47315L,47316L,47317L,47318L,47319L,47320L,47321L,47322L,47323L,47324L, -47325L,47326L,47327L,47328L,47329L,47330L,47331L,47332L,47333L,47334L, -47335L,47336L,47337L,47338L,47339L,47340L,47341L,47342L,47343L,47344L, -47345L,47346L,47347L,47348L,47349L,47350L,47351L,47352L,47353L,47354L, -47355L,47356L,47357L,47358L,47359L,47360L,47361L,47362L,47363L,47364L, -47365L,47366L,47367L,47368L,47369L,47370L,47371L,47372L,47373L,47374L, -47375L,47376L,47377L,47378L,47379L,47380L,47381L,47382L,47383L,47384L, -47385L,47386L,47387L,47388L,47389L,47390L,47391L,47392L,47393L,47394L, -47395L,47396L,47397L,47398L,47399L,47400L,47401L,47402L,47403L,47404L, -47405L,47406L,47407L,47408L,47409L,47410L,47411L,47412L,47413L,47414L, -47415L,47416L,47417L,47418L,47419L,47420L,47421L,47422L,47423L,47424L, -47425L,47426L,47427L,47428L,47429L,47430L,47431L,47432L,47433L,47434L, -47435L,47436L,47437L,47438L,47439L,47440L,47441L,47442L,47443L,47444L, -47445L,47446L,47447L,47448L,47449L,47450L,47451L,47452L,47453L,47454L, -47455L,47456L,47457L,47458L,47459L,47460L,47461L,47462L,47463L,47464L, -47465L,47466L,47467L,47468L,47469L,47470L,47471L,47472L,47473L,47474L, -47475L,47476L,47477L,47478L,47479L,47480L,47481L,47482L,47483L,47484L, -47485L,47486L,47487L,47488L,47489L,47490L,47491L,47492L,47493L,47494L, -47495L,47496L,47497L,47498L,47499L,47500L,47501L,47502L,47503L,47504L, -47505L,47506L,47507L,47508L,47509L,47510L,47511L,47512L,47513L,47514L, -47515L,47516L,47517L,47518L,47519L,47520L,47521L,47522L,47523L,47524L, -47525L,47526L,47527L,47528L,47529L,47530L,47531L,47532L,47533L,47534L, -47535L,47536L,47537L,47538L,47539L,47540L,47541L,47542L,47543L,47544L, -47545L,47546L,47547L,47548L,47549L,47550L,47551L,47552L,47553L,47554L, -47555L,47556L,47557L,47558L,47559L,47560L,47561L,47562L,47563L,47564L, -47565L,47566L,47567L,47568L,47569L,47570L,47571L,47572L,47573L,47574L, -47575L,47576L,47577L,47578L,47579L,47580L,47581L,47582L,47583L,47584L, -47585L,47586L,47587L,47588L,47589L,47590L,47591L,47592L,47593L,47594L, -47595L,47596L,47597L,47598L,47599L,47600L,47601L,47602L,47603L,47604L, -47605L,47606L,47607L,47608L,47609L,47610L,47611L,47612L,47613L,47614L, -47615L,47616L,47617L,47618L,47619L,47620L,47621L,47622L,47623L,47624L, -47625L,47626L,47627L,47628L,47629L,47630L,47631L,47632L,47633L,47634L, -47635L,47636L,47637L,47638L,47639L,47640L,47641L,47642L,47643L,47644L, -47645L,47646L,47647L,47648L,47649L,47650L,47651L,47652L,47653L,47654L, -47655L,47656L,47657L,47658L,47659L,47660L,47661L,47662L,47663L,47664L, -47665L,47666L,47667L,47668L,47669L,47670L,47671L,47672L,47673L,47674L, -47675L,47676L,47677L,47678L,47679L,47680L,47681L,47682L,47683L,47684L, -47685L,47686L,47687L,47688L,47689L,47690L,47691L,47692L,47693L,47694L, -47695L,47696L,47697L,47698L,47699L,47700L,47701L,47702L,47703L,47704L, -47705L,47706L,47707L,47708L,47709L,47710L,47711L,47712L,47713L,47714L, -47715L,47716L,47717L,47718L,47719L,47720L,47721L,47722L,47723L,47724L, -47725L,47726L,47727L,47728L,47729L,47730L,47731L,47732L,47733L,47734L, -47735L,47736L,47737L,47738L,47739L,47740L,47741L,47742L,47743L,47744L, -47745L,47746L,47747L,47748L,47749L,47750L,47751L,47752L,47753L,47754L, -47755L,47756L,47757L,47758L,47759L,47760L,47761L,47762L,47763L,47764L, -47765L,47766L,47767L,47768L,47769L,47770L,47771L,47772L,47773L,47774L, -47775L,47776L,47777L,47778L,47779L,47780L,47781L,47782L,47783L,47784L, -47785L,47786L,47787L,47788L,47789L,47790L,47791L,47792L,47793L,47794L, -47795L,47796L,47797L,47798L,47799L,47800L,47801L,47802L,47803L,47804L, -47805L,47806L,47807L,47808L,47809L,47810L,47811L,47812L,47813L,47814L, -47815L,47816L,47817L,47818L,47819L,47820L,47821L,47822L,47823L,47824L, -47825L,47826L,47827L,47828L,47829L,47830L,47831L,47832L,47833L,47834L, -47835L,47836L,47837L,47838L,47839L,47840L,47841L,47842L,47843L,47844L, -47845L,47846L,47847L,47848L,47849L,47850L,47851L,47852L,47853L,47854L, -47855L,47856L,47857L,47858L,47859L,47860L,47861L,47862L,47863L,47864L, -47865L,47866L,47867L,47868L,47869L,47870L,47871L,47872L,47873L,47874L, -47875L,47876L,47877L,47878L,47879L,47880L,47881L,47882L,47883L,47884L, -47885L,47886L,47887L,47888L,47889L,47890L,47891L,47892L,47893L,47894L, -47895L,47896L,47897L,47898L,47899L,47900L,47901L,47902L,47903L,47904L, -47905L,47906L,47907L,47908L,47909L,47910L,47911L,47912L,47913L,47914L, -47915L,47916L,47917L,47918L,47919L,47920L,47921L,47922L,47923L,47924L, -47925L,47926L,47927L,47928L,47929L,47930L,47931L,47932L,47933L,47934L, -47935L,47936L,47937L,47938L,47939L,47940L,47941L,47942L,47943L,47944L, -47945L,47946L,47947L,47948L,47949L,47950L,47951L,47952L,47953L,47954L, -47955L,47956L,47957L,47958L,47959L,47960L,47961L,47962L,47963L,47964L, -47965L,47966L,47967L,47968L,47969L,47970L,47971L,47972L,47973L,47974L, -47975L,47976L,47977L,47978L,47979L,47980L,47981L,47982L,47983L,47984L, -47985L,47986L,47987L,47988L,47989L,47990L,47991L,47992L,47993L,47994L, -47995L,47996L,47997L,47998L,47999L,48000L,48001L,48002L,48003L,48004L, -48005L,48006L,48007L,48008L,48009L,48010L,48011L,48012L,48013L,48014L, -48015L,48016L,48017L,48018L,48019L,48020L,48021L,48022L,48023L,48024L, -48025L,48026L,48027L,48028L,48029L,48030L,48031L,48032L,48033L,48034L, -48035L,48036L,48037L,48038L,48039L,48040L,48041L,48042L,48043L,48044L, -48045L,48046L,48047L,48048L,48049L,48050L,48051L,48052L,48053L,48054L, -48055L,48056L,48057L,48058L,48059L,48060L,48061L,48062L,48063L,48064L, -48065L,48066L,48067L,48068L,48069L,48070L,48071L,48072L,48073L,48074L, -48075L,48076L,48077L,48078L,48079L,48080L,48081L,48082L,48083L,48084L, -48085L,48086L,48087L,48088L,48089L,48090L,48091L,48092L,48093L,48094L, -48095L,48096L,48097L,48098L,48099L,48100L,48101L,48102L,48103L,48104L, -48105L,48106L,48107L,48108L,48109L,48110L,48111L,48112L,48113L,48114L, -48115L,48116L,48117L,48118L,48119L,48120L,48121L,48122L,48123L,48124L, -48125L,48126L,48127L,48128L,48129L,48130L,48131L,48132L,48133L,48134L, -48135L,48136L,48137L,48138L,48139L,48140L,48141L,48142L,48143L,48144L, -48145L,48146L,48147L,48148L,48149L,48150L,48151L,48152L,48153L,48154L, -48155L,48156L,48157L,48158L,48159L,48160L,48161L,48162L,48163L,48164L, -48165L,48166L,48167L,48168L,48169L,48170L,48171L,48172L,48173L,48174L, -48175L,48176L,48177L,48178L,48179L,48180L,48181L,48182L,48183L,48184L, -48185L,48186L,48187L,48188L,48189L,48190L,48191L,48192L,48193L,48194L, -48195L,48196L,48197L,48198L,48199L,48200L,48201L,48202L,48203L,48204L, -48205L,48206L,48207L,48208L,48209L,48210L,48211L,48212L,48213L,48214L, -48215L,48216L,48217L,48218L,48219L,48220L,48221L,48222L,48223L,48224L, -48225L,48226L,48227L,48228L,48229L,48230L,48231L,48232L,48233L,48234L, -48235L,48236L,48237L,48238L,48239L,48240L,48241L,48242L,48243L,48244L, -48245L,48246L,48247L,48248L,48249L,48250L,48251L,48252L,48253L,48254L, -48255L,48256L,48257L,48258L,48259L,48260L,48261L,48262L,48263L,48264L, -48265L,48266L,48267L,48268L,48269L,48270L,48271L,48272L,48273L,48274L, -48275L,48276L,48277L,48278L,48279L,48280L,48281L,48282L,48283L,48284L, -48285L,48286L,48287L,48288L,48289L,48290L,48291L,48292L,48293L,48294L, -48295L,48296L,48297L,48298L,48299L,48300L,48301L,48302L,48303L,48304L, -48305L,48306L,48307L,48308L,48309L,48310L,48311L,48312L,48313L,48314L, -48315L,48316L,48317L,48318L,48319L,48320L,48321L,48322L,48323L,48324L, -48325L,48326L,48327L,48328L,48329L,48330L,48331L,48332L,48333L,48334L, -48335L,48336L,48337L,48338L,48339L,48340L,48341L,48342L,48343L,48344L, -48345L,48346L,48347L,48348L,48349L,48350L,48351L,48352L,48353L,48354L, -48355L,48356L,48357L,48358L,48359L,48360L,48361L,48362L,48363L,48364L, -48365L,48366L,48367L,48368L,48369L,48370L,48371L,48372L,48373L,48374L, -48375L,48376L,48377L,48378L,48379L,48380L,48381L,48382L,48383L,48384L, -48385L,48386L,48387L,48388L,48389L,48390L,48391L,48392L,48393L,48394L, -48395L,48396L,48397L,48398L,48399L,48400L,48401L,48402L,48403L,48404L, -48405L,48406L,48407L,48408L,48409L,48410L,48411L,48412L,48413L,48414L, -48415L,48416L,48417L,48418L,48419L,48420L,48421L,48422L,48423L,48424L, -48425L,48426L,48427L,48428L,48429L,48430L,48431L,48432L,48433L,48434L, -48435L,48436L,48437L,48438L,48439L,48440L,48441L,48442L,48443L,48444L, -48445L,48446L,48447L,48448L,48449L,48450L,48451L,48452L,48453L,48454L, -48455L,48456L,48457L,48458L,48459L,48460L,48461L,48462L,48463L,48464L, -48465L,48466L,48467L,48468L,48469L,48470L,48471L,48472L,48473L,48474L, -48475L,48476L,48477L,48478L,48479L,48480L,48481L,48482L,48483L,48484L, -48485L,48486L,48487L,48488L,48489L,48490L,48491L,48492L,48493L,48494L, -48495L,48496L,48497L,48498L,48499L,48500L,48501L,48502L,48503L,48504L, -48505L,48506L,48507L,48508L,48509L,48510L,48511L,48512L,48513L,48514L, -48515L,48516L,48517L,48518L,48519L,48520L,48521L,48522L,48523L,48524L, -48525L,48526L,48527L,48528L,48529L,48530L,48531L,48532L,48533L,48534L, -48535L,48536L,48537L,48538L,48539L,48540L,48541L,48542L,48543L,48544L, -48545L,48546L,48547L,48548L,48549L,48550L,48551L,48552L,48553L,48554L, -48555L,48556L,48557L,48558L,48559L,48560L,48561L,48562L,48563L,48564L, -48565L,48566L,48567L,48568L,48569L,48570L,48571L,48572L,48573L,48574L, -48575L,48576L,48577L,48578L,48579L,48580L,48581L,48582L,48583L,48584L, -48585L,48586L,48587L,48588L,48589L,48590L,48591L,48592L,48593L,48594L, -48595L,48596L,48597L,48598L,48599L,48600L,48601L,48602L,48603L,48604L, -48605L,48606L,48607L,48608L,48609L,48610L,48611L,48612L,48613L,48614L, -48615L,48616L,48617L,48618L,48619L,48620L,48621L,48622L,48623L,48624L, -48625L,48626L,48627L,48628L,48629L,48630L,48631L,48632L,48633L,48634L, -48635L,48636L,48637L,48638L,48639L,48640L,48641L,48642L,48643L,48644L, -48645L,48646L,48647L,48648L,48649L,48650L,48651L,48652L,48653L,48654L, -48655L,48656L,48657L,48658L,48659L,48660L,48661L,48662L,48663L,48664L, -48665L,48666L,48667L,48668L,48669L,48670L,48671L,48672L,48673L,48674L, -48675L,48676L,48677L,48678L,48679L,48680L,48681L,48682L,48683L,48684L, -48685L,48686L,48687L,48688L,48689L,48690L,48691L,48692L,48693L,48694L, -48695L,48696L,48697L,48698L,48699L,48700L,48701L,48702L,48703L,48704L, -48705L,48706L,48707L,48708L,48709L,48710L,48711L,48712L,48713L,48714L, -48715L,48716L,48717L,48718L,48719L,48720L,48721L,48722L,48723L,48724L, -48725L,48726L,48727L,48728L,48729L,48730L,48731L,48732L,48733L,48734L, -48735L,48736L,48737L,48738L,48739L,48740L,48741L,48742L,48743L,48744L, -48745L,48746L,48747L,48748L,48749L,48750L,48751L,48752L,48753L,48754L, -48755L,48756L,48757L,48758L,48759L,48760L,48761L,48762L,48763L,48764L, -48765L,48766L,48767L,48768L,48769L,48770L,48771L,48772L,48773L,48774L, -48775L,48776L,48777L,48778L,48779L,48780L,48781L,48782L,48783L,48784L, -48785L,48786L,48787L,48788L,48789L,48790L,48791L,48792L,48793L,48794L, -48795L,48796L,48797L,48798L,48799L,48800L,48801L,48802L,48803L,48804L, -48805L,48806L,48807L,48808L,48809L,48810L,48811L,48812L,48813L,48814L, -48815L,48816L,48817L,48818L,48819L,48820L,48821L,48822L,48823L,48824L, -48825L,48826L,48827L,48828L,48829L,48830L,48831L,48832L,48833L,48834L, -48835L,48836L,48837L,48838L,48839L,48840L,48841L,48842L,48843L,48844L, -48845L,48846L,48847L,48848L,48849L,48850L,48851L,48852L,48853L,48854L, -48855L,48856L,48857L,48858L,48859L,48860L,48861L,48862L,48863L,48864L, -48865L,48866L,48867L,48868L,48869L,48870L,48871L,48872L,48873L,48874L, -48875L,48876L,48877L,48878L,48879L,48880L,48881L,48882L,48883L,48884L, -48885L,48886L,48887L,48888L,48889L,48890L,48891L,48892L,48893L,48894L, -48895L,48896L,48897L,48898L,48899L,48900L,48901L,48902L,48903L,48904L, -48905L,48906L,48907L,48908L,48909L,48910L,48911L,48912L,48913L,48914L, -48915L,48916L,48917L,48918L,48919L,48920L,48921L,48922L,48923L,48924L, -48925L,48926L,48927L,48928L,48929L,48930L,48931L,48932L,48933L,48934L, -48935L,48936L,48937L,48938L,48939L,48940L,48941L,48942L,48943L,48944L, -48945L,48946L,48947L,48948L,48949L,48950L,48951L,48952L,48953L,48954L, -48955L,48956L,48957L,48958L,48959L,48960L,48961L,48962L,48963L,48964L, -48965L,48966L,48967L,48968L,48969L,48970L,48971L,48972L,48973L,48974L, -48975L,48976L,48977L,48978L,48979L,48980L,48981L,48982L,48983L,48984L, -48985L,48986L,48987L,48988L,48989L,48990L,48991L,48992L,48993L,48994L, -48995L,48996L,48997L,48998L,48999L,49000L,49001L,49002L,49003L,49004L, -49005L,49006L,49007L,49008L,49009L,49010L,49011L,49012L,49013L,49014L, -49015L,49016L,49017L,49018L,49019L,49020L,49021L,49022L,49023L,49024L, -49025L,49026L,49027L,49028L,49029L,49030L,49031L,49032L,49033L,49034L, -49035L,49036L,49037L,49038L,49039L,49040L,49041L,49042L,49043L,49044L, -49045L,49046L,49047L,49048L,49049L,49050L,49051L,49052L,49053L,49054L, -49055L,49056L,49057L,49058L,49059L,49060L,49061L,49062L,49063L,49064L, -49065L,49066L,49067L,49068L,49069L,49070L,49071L,49072L,49073L,49074L, -49075L,49076L,49077L,49078L,49079L,49080L,49081L,49082L,49083L,49084L, -49085L,49086L,49087L,49088L,49089L,49090L,49091L,49092L,49093L,49094L, -49095L,49096L,49097L,49098L,49099L,49100L,49101L,49102L,49103L,49104L, -49105L,49106L,49107L,49108L,49109L,49110L,49111L,49112L,49113L,49114L, -49115L,49116L,49117L,49118L,49119L,49120L,49121L,49122L,49123L,49124L, -49125L,49126L,49127L,49128L,49129L,49130L,49131L,49132L,49133L,49134L, -49135L,49136L,49137L,49138L,49139L,49140L,49141L,49142L,49143L,49144L, -49145L,49146L,49147L,49148L,49149L,49150L,49151L,49152L,49153L,49154L, -49155L,49156L,49157L,49158L,49159L,49160L,49161L,49162L,49163L,49164L, -49165L,49166L,49167L,49168L,49169L,49170L,49171L,49172L,49173L,49174L, -49175L,49176L,49177L,49178L,49179L,49180L,49181L,49182L,49183L,49184L, -49185L,49186L,49187L,49188L,49189L,49190L,49191L,49192L,49193L,49194L, -49195L,49196L,49197L,49198L,49199L,49200L,49201L,49202L,49203L,49204L, -49205L,49206L,49207L,49208L,49209L,49210L,49211L,49212L,49213L,49214L, -49215L,49216L,49217L,49218L,49219L,49220L,49221L,49222L,49223L,49224L, -49225L,49226L,49227L,49228L,49229L,49230L,49231L,49232L,49233L,49234L, -49235L,49236L,49237L,49238L,49239L,49240L,49241L,49242L,49243L,49244L, -49245L,49246L,49247L,49248L,49249L,49250L,49251L,49252L,49253L,49254L, -49255L,49256L,49257L,49258L,49259L,49260L,49261L,49262L,49263L,49264L, -49265L,49266L,49267L,49268L,49269L,49270L,49271L,49272L,49273L,49274L, -49275L,49276L,49277L,49278L,49279L,49280L,49281L,49282L,49283L,49284L, -49285L,49286L,49287L,49288L,49289L,49290L,49291L,49292L,49293L,49294L, -49295L,49296L,49297L,49298L,49299L,49300L,49301L,49302L,49303L,49304L, -49305L,49306L,49307L,49308L,49309L,49310L,49311L,49312L,49313L,49314L, -49315L,49316L,49317L,49318L,49319L,49320L,49321L,49322L,49323L,49324L, -49325L,49326L,49327L,49328L,49329L,49330L,49331L,49332L,49333L,49334L, -49335L,49336L,49337L,49338L,49339L,49340L,49341L,49342L,49343L,49344L, -49345L,49346L,49347L,49348L,49349L,49350L,49351L,49352L,49353L,49354L, -49355L,49356L,49357L,49358L,49359L,49360L,49361L,49362L,49363L,49364L, -49365L,49366L,49367L,49368L,49369L,49370L,49371L,49372L,49373L,49374L, -49375L,49376L,49377L,49378L,49379L,49380L,49381L,49382L,49383L,49384L, -49385L,49386L,49387L,49388L,49389L,49390L,49391L,49392L,49393L,49394L, -49395L,49396L,49397L,49398L,49399L,49400L,49401L,49402L,49403L,49404L, -49405L,49406L,49407L,49408L,49409L,49410L,49411L,49412L,49413L,49414L, -49415L,49416L,49417L,49418L,49419L,49420L,49421L,49422L,49423L,49424L, -49425L,49426L,49427L,49428L,49429L,49430L,49431L,49432L,49433L,49434L, -49435L,49436L,49437L,49438L,49439L,49440L,49441L,49442L,49443L,49444L, -49445L,49446L,49447L,49448L,49449L,49450L,49451L,49452L,49453L,49454L, -49455L,49456L,49457L,49458L,49459L,49460L,49461L,49462L,49463L,49464L, -49465L,49466L,49467L,49468L,49469L,49470L,49471L,49472L,49473L,49474L, -49475L,49476L,49477L,49478L,49479L,49480L,49481L,49482L,49483L,49484L, -49485L,49486L,49487L,49488L,49489L,49490L,49491L,49492L,49493L,49494L, -49495L,49496L,49497L,49498L,49499L,49500L,49501L,49502L,49503L,49504L, -49505L,49506L,49507L,49508L,49509L,49510L,49511L,49512L,49513L,49514L, -49515L,49516L,49517L,49518L,49519L,49520L,49521L,49522L,49523L,49524L, -49525L,49526L,49527L,49528L,49529L,49530L,49531L,49532L,49533L,49534L, -49535L,49536L,49537L,49538L,49539L,49540L,49541L,49542L,49543L,49544L, -49545L,49546L,49547L,49548L,49549L,49550L,49551L,49552L,49553L,49554L, -49555L,49556L,49557L,49558L,49559L,49560L,49561L,49562L,49563L,49564L, -49565L,49566L,49567L,49568L,49569L,49570L,49571L,49572L,49573L,49574L, -49575L,49576L,49577L,49578L,49579L,49580L,49581L,49582L,49583L,49584L, -49585L,49586L,49587L,49588L,49589L,49590L,49591L,49592L,49593L,49594L, -49595L,49596L,49597L,49598L,49599L,49600L,49601L,49602L,49603L,49604L, -49605L,49606L,49607L,49608L,49609L,49610L,49611L,49612L,49613L,49614L, -49615L,49616L,49617L,49618L,49619L,49620L,49621L,49622L,49623L,49624L, -49625L,49626L,49627L,49628L,49629L,49630L,49631L,49632L,49633L,49634L, -49635L,49636L,49637L,49638L,49639L,49640L,49641L,49642L,49643L,49644L, -49645L,49646L,49647L,49648L,49649L,49650L,49651L,49652L,49653L,49654L, -49655L,49656L,49657L,49658L,49659L,49660L,49661L,49662L,49663L,49664L, -49665L,49666L,49667L,49668L,49669L,49670L,49671L,49672L,49673L,49674L, -49675L,49676L,49677L,49678L,49679L,49680L,49681L,49682L,49683L,49684L, -49685L,49686L,49687L,49688L,49689L,49690L,49691L,49692L,49693L,49694L, -49695L,49696L,49697L,49698L,49699L,49700L,49701L,49702L,49703L,49704L, -49705L,49706L,49707L,49708L,49709L,49710L,49711L,49712L,49713L,49714L, -49715L,49716L,49717L,49718L,49719L,49720L,49721L,49722L,49723L,49724L, -49725L,49726L,49727L,49728L,49729L,49730L,49731L,49732L,49733L,49734L, -49735L,49736L,49737L,49738L,49739L,49740L,49741L,49742L,49743L,49744L, -49745L,49746L,49747L,49748L,49749L,49750L,49751L,49752L,49753L,49754L, -49755L,49756L,49757L,49758L,49759L,49760L,49761L,49762L,49763L,49764L, -49765L,49766L,49767L,49768L,49769L,49770L,49771L,49772L,49773L,49774L, -49775L,49776L,49777L,49778L,49779L,49780L,49781L,49782L,49783L,49784L, -49785L,49786L,49787L,49788L,49789L,49790L,49791L,49792L,49793L,49794L, -49795L,49796L,49797L,49798L,49799L,49800L,49801L,49802L,49803L,49804L, -49805L,49806L,49807L,49808L,49809L,49810L,49811L,49812L,49813L,49814L, -49815L,49816L,49817L,49818L,49819L,49820L,49821L,49822L,49823L,49824L, -49825L,49826L,49827L,49828L,49829L,49830L,49831L,49832L,49833L,49834L, -49835L,49836L,49837L,49838L,49839L,49840L,49841L,49842L,49843L,49844L, -49845L,49846L,49847L,49848L,49849L,49850L,49851L,49852L,49853L,49854L, -49855L,49856L,49857L,49858L,49859L,49860L,49861L,49862L,49863L,49864L, -49865L,49866L,49867L,49868L,49869L,49870L,49871L,49872L,49873L,49874L, -49875L,49876L,49877L,49878L,49879L,49880L,49881L,49882L,49883L,49884L, -49885L,49886L,49887L,49888L,49889L,49890L,49891L,49892L,49893L,49894L, -49895L,49896L,49897L,49898L,49899L,49900L,49901L,49902L,49903L,49904L, -49905L,49906L,49907L,49908L,49909L,49910L,49911L,49912L,49913L,49914L, -49915L,49916L,49917L,49918L,49919L,49920L,49921L,49922L,49923L,49924L, -49925L,49926L,49927L,49928L,49929L,49930L,49931L,49932L,49933L,49934L, -49935L,49936L,49937L,49938L,49939L,49940L,49941L,49942L,49943L,49944L, -49945L,49946L,49947L,49948L,49949L,49950L,49951L,49952L,49953L,49954L, -49955L,49956L,49957L,49958L,49959L,49960L,49961L,49962L,49963L,49964L, -49965L,49966L,49967L,49968L,49969L,49970L,49971L,49972L,49973L,49974L, -49975L,49976L,49977L,49978L,49979L,49980L,49981L,49982L,49983L,49984L, -49985L,49986L,49987L,49988L,49989L,49990L,49991L,49992L,49993L,49994L, -49995L,49996L,49997L,49998L,49999L,50000L,50001L,50002L,50003L,50004L, -50005L,50006L,50007L,50008L,50009L,50010L,50011L,50012L,50013L,50014L, -50015L,50016L,50017L,50018L,50019L,50020L,50021L,50022L,50023L,50024L, -50025L,50026L,50027L,50028L,50029L,50030L,50031L,50032L,50033L,50034L, -50035L,50036L,50037L,50038L,50039L,50040L,50041L,50042L,50043L,50044L, -50045L,50046L,50047L,50048L,50049L,50050L,50051L,50052L,50053L,50054L, -50055L,50056L,50057L,50058L,50059L,50060L,50061L,50062L,50063L,50064L, -50065L,50066L,50067L,50068L,50069L,50070L,50071L,50072L,50073L,50074L, -50075L,50076L,50077L,50078L,50079L,50080L,50081L,50082L,50083L,50084L, -50085L,50086L,50087L,50088L,50089L,50090L,50091L,50092L,50093L,50094L, -50095L,50096L,50097L,50098L,50099L,50100L,50101L,50102L,50103L,50104L, -50105L,50106L,50107L,50108L,50109L,50110L,50111L,50112L,50113L,50114L, -50115L,50116L,50117L,50118L,50119L,50120L,50121L,50122L,50123L,50124L, -50125L,50126L,50127L,50128L,50129L,50130L,50131L,50132L,50133L,50134L, -50135L,50136L,50137L,50138L,50139L,50140L,50141L,50142L,50143L,50144L, -50145L,50146L,50147L,50148L,50149L,50150L,50151L,50152L,50153L,50154L, -50155L,50156L,50157L,50158L,50159L,50160L,50161L,50162L,50163L,50164L, -50165L,50166L,50167L,50168L,50169L,50170L,50171L,50172L,50173L,50174L, -50175L,50176L,50177L,50178L,50179L,50180L,50181L,50182L,50183L,50184L, -50185L,50186L,50187L,50188L,50189L,50190L,50191L,50192L,50193L,50194L, -50195L,50196L,50197L,50198L,50199L,50200L,50201L,50202L,50203L,50204L, -50205L,50206L,50207L,50208L,50209L,50210L,50211L,50212L,50213L,50214L, -50215L,50216L,50217L,50218L,50219L,50220L,50221L,50222L,50223L,50224L, -50225L,50226L,50227L,50228L,50229L,50230L,50231L,50232L,50233L,50234L, -50235L,50236L,50237L,50238L,50239L,50240L,50241L,50242L,50243L,50244L, -50245L,50246L,50247L,50248L,50249L,50250L,50251L,50252L,50253L,50254L, -50255L,50256L,50257L,50258L,50259L,50260L,50261L,50262L,50263L,50264L, -50265L,50266L,50267L,50268L,50269L,50270L,50271L,50272L,50273L,50274L, -50275L,50276L,50277L,50278L,50279L,50280L,50281L,50282L,50283L,50284L, -50285L,50286L,50287L,50288L,50289L,50290L,50291L,50292L,50293L,50294L, -50295L,50296L,50297L,50298L,50299L,50300L,50301L,50302L,50303L,50304L, -50305L,50306L,50307L,50308L,50309L,50310L,50311L,50312L,50313L,50314L, -50315L,50316L,50317L,50318L,50319L,50320L,50321L,50322L,50323L,50324L, -50325L,50326L,50327L,50328L,50329L,50330L,50331L,50332L,50333L,50334L, -50335L,50336L,50337L,50338L,50339L,50340L,50341L,50342L,50343L,50344L, -50345L,50346L,50347L,50348L,50349L,50350L,50351L,50352L,50353L,50354L, -50355L,50356L,50357L,50358L,50359L,50360L,50361L,50362L,50363L,50364L, -50365L,50366L,50367L,50368L,50369L,50370L,50371L,50372L,50373L,50374L, -50375L,50376L,50377L,50378L,50379L,50380L,50381L,50382L,50383L,50384L, -50385L,50386L,50387L,50388L,50389L,50390L,50391L,50392L,50393L,50394L, -50395L,50396L,50397L,50398L,50399L,50400L,50401L,50402L,50403L,50404L, -50405L,50406L,50407L,50408L,50409L,50410L,50411L,50412L,50413L,50414L, -50415L,50416L,50417L,50418L,50419L,50420L,50421L,50422L,50423L,50424L, -50425L,50426L,50427L,50428L,50429L,50430L,50431L,50432L,50433L,50434L, -50435L,50436L,50437L,50438L,50439L,50440L,50441L,50442L,50443L,50444L, -50445L,50446L,50447L,50448L,50449L,50450L,50451L,50452L,50453L,50454L, -50455L,50456L,50457L,50458L,50459L,50460L,50461L,50462L,50463L,50464L, -50465L,50466L,50467L,50468L,50469L,50470L,50471L,50472L,50473L,50474L, -50475L,50476L,50477L,50478L,50479L,50480L,50481L,50482L,50483L,50484L, -50485L,50486L,50487L,50488L,50489L,50490L,50491L,50492L,50493L,50494L, -50495L,50496L,50497L,50498L,50499L,50500L,50501L,50502L,50503L,50504L, -50505L,50506L,50507L,50508L,50509L,50510L,50511L,50512L,50513L,50514L, -50515L,50516L,50517L,50518L,50519L,50520L,50521L,50522L,50523L,50524L, -50525L,50526L,50527L,50528L,50529L,50530L,50531L,50532L,50533L,50534L, -50535L,50536L,50537L,50538L,50539L,50540L,50541L,50542L,50543L,50544L, -50545L,50546L,50547L,50548L,50549L,50550L,50551L,50552L,50553L,50554L, -50555L,50556L,50557L,50558L,50559L,50560L,50561L,50562L,50563L,50564L, -50565L,50566L,50567L,50568L,50569L,50570L,50571L,50572L,50573L,50574L, -50575L,50576L,50577L,50578L,50579L,50580L,50581L,50582L,50583L,50584L, -50585L,50586L,50587L,50588L,50589L,50590L,50591L,50592L,50593L,50594L, -50595L,50596L,50597L,50598L,50599L,50600L,50601L,50602L,50603L,50604L, -50605L,50606L,50607L,50608L,50609L,50610L,50611L,50612L,50613L,50614L, -50615L,50616L,50617L,50618L,50619L,50620L,50621L,50622L,50623L,50624L, -50625L,50626L,50627L,50628L,50629L,50630L,50631L,50632L,50633L,50634L, -50635L,50636L,50637L,50638L,50639L,50640L,50641L,50642L,50643L,50644L, -50645L,50646L,50647L,50648L,50649L,50650L,50651L,50652L,50653L,50654L, -50655L,50656L,50657L,50658L,50659L,50660L,50661L,50662L,50663L,50664L, -50665L,50666L,50667L,50668L,50669L,50670L,50671L,50672L,50673L,50674L, -50675L,50676L,50677L,50678L,50679L,50680L,50681L,50682L,50683L,50684L, -50685L,50686L,50687L,50688L,50689L,50690L,50691L,50692L,50693L,50694L, -50695L,50696L,50697L,50698L,50699L,50700L,50701L,50702L,50703L,50704L, -50705L,50706L,50707L,50708L,50709L,50710L,50711L,50712L,50713L,50714L, -50715L,50716L,50717L,50718L,50719L,50720L,50721L,50722L,50723L,50724L, -50725L,50726L,50727L,50728L,50729L,50730L,50731L,50732L,50733L,50734L, -50735L,50736L,50737L,50738L,50739L,50740L,50741L,50742L,50743L,50744L, -50745L,50746L,50747L,50748L,50749L,50750L,50751L,50752L,50753L,50754L, -50755L,50756L,50757L,50758L,50759L,50760L,50761L,50762L,50763L,50764L, -50765L,50766L,50767L,50768L,50769L,50770L,50771L,50772L,50773L,50774L, -50775L,50776L,50777L,50778L,50779L,50780L,50781L,50782L,50783L,50784L, -50785L,50786L,50787L,50788L,50789L,50790L,50791L,50792L,50793L,50794L, -50795L,50796L,50797L,50798L,50799L,50800L,50801L,50802L,50803L,50804L, -50805L,50806L,50807L,50808L,50809L,50810L,50811L,50812L,50813L,50814L, -50815L,50816L,50817L,50818L,50819L,50820L,50821L,50822L,50823L,50824L, -50825L,50826L,50827L,50828L,50829L,50830L,50831L,50832L,50833L,50834L, -50835L,50836L,50837L,50838L,50839L,50840L,50841L,50842L,50843L,50844L, -50845L,50846L,50847L,50848L,50849L,50850L,50851L,50852L,50853L,50854L, -50855L,50856L,50857L,50858L,50859L,50860L,50861L,50862L,50863L,50864L, -50865L,50866L,50867L,50868L,50869L,50870L,50871L,50872L,50873L,50874L, -50875L,50876L,50877L,50878L,50879L,50880L,50881L,50882L,50883L,50884L, -50885L,50886L,50887L,50888L,50889L,50890L,50891L,50892L,50893L,50894L, -50895L,50896L,50897L,50898L,50899L,50900L,50901L,50902L,50903L,50904L, -50905L,50906L,50907L,50908L,50909L,50910L,50911L,50912L,50913L,50914L, -50915L,50916L,50917L,50918L,50919L,50920L,50921L,50922L,50923L,50924L, -50925L,50926L,50927L,50928L,50929L,50930L,50931L,50932L,50933L,50934L, -50935L,50936L,50937L,50938L,50939L,50940L,50941L,50942L,50943L,50944L, -50945L,50946L,50947L,50948L,50949L,50950L,50951L,50952L,50953L,50954L, -50955L,50956L,50957L,50958L,50959L,50960L,50961L,50962L,50963L,50964L, -50965L,50966L,50967L,50968L,50969L,50970L,50971L,50972L,50973L,50974L, -50975L,50976L,50977L,50978L,50979L,50980L,50981L,50982L,50983L,50984L, -50985L,50986L,50987L,50988L,50989L,50990L,50991L,50992L,50993L,50994L, -50995L,50996L,50997L,50998L,50999L,51000L,51001L,51002L,51003L,51004L, -51005L,51006L,51007L,51008L,51009L,51010L,51011L,51012L,51013L,51014L, -51015L,51016L,51017L,51018L,51019L,51020L,51021L,51022L,51023L,51024L, -51025L,51026L,51027L,51028L,51029L,51030L,51031L,51032L,51033L,51034L, -51035L,51036L,51037L,51038L,51039L,51040L,51041L,51042L,51043L,51044L, -51045L,51046L,51047L,51048L,51049L,51050L,51051L,51052L,51053L,51054L, -51055L,51056L,51057L,51058L,51059L,51060L,51061L,51062L,51063L,51064L, -51065L,51066L,51067L,51068L,51069L,51070L,51071L,51072L,51073L,51074L, -51075L,51076L,51077L,51078L,51079L,51080L,51081L,51082L,51083L,51084L, -51085L,51086L,51087L,51088L,51089L,51090L,51091L,51092L,51093L,51094L, -51095L,51096L,51097L,51098L,51099L,51100L,51101L,51102L,51103L,51104L, -51105L,51106L,51107L,51108L,51109L,51110L,51111L,51112L,51113L,51114L, -51115L,51116L,51117L,51118L,51119L,51120L,51121L,51122L,51123L,51124L, -51125L,51126L,51127L,51128L,51129L,51130L,51131L,51132L,51133L,51134L, -51135L,51136L,51137L,51138L,51139L,51140L,51141L,51142L,51143L,51144L, -51145L,51146L,51147L,51148L,51149L,51150L,51151L,51152L,51153L,51154L, -51155L,51156L,51157L,51158L,51159L,51160L,51161L,51162L,51163L,51164L, -51165L,51166L,51167L,51168L,51169L,51170L,51171L,51172L,51173L,51174L, -51175L,51176L,51177L,51178L,51179L,51180L,51181L,51182L,51183L,51184L, -51185L,51186L,51187L,51188L,51189L,51190L,51191L,51192L,51193L,51194L, -51195L,51196L,51197L,51198L,51199L,51200L,51201L,51202L,51203L,51204L, -51205L,51206L,51207L,51208L,51209L,51210L,51211L,51212L,51213L,51214L, -51215L,51216L,51217L,51218L,51219L,51220L,51221L,51222L,51223L,51224L, -51225L,51226L,51227L,51228L,51229L,51230L,51231L,51232L,51233L,51234L, -51235L,51236L,51237L,51238L,51239L,51240L,51241L,51242L,51243L,51244L, -51245L,51246L,51247L,51248L,51249L,51250L,51251L,51252L,51253L,51254L, -51255L,51256L,51257L,51258L,51259L,51260L,51261L,51262L,51263L,51264L, -51265L,51266L,51267L,51268L,51269L,51270L,51271L,51272L,51273L,51274L, -51275L,51276L,51277L,51278L,51279L,51280L,51281L,51282L,51283L,51284L, -51285L,51286L,51287L,51288L,51289L,51290L,51291L,51292L,51293L,51294L, -51295L,51296L,51297L,51298L,51299L,51300L,51301L,51302L,51303L,51304L, -51305L,51306L,51307L,51308L,51309L,51310L,51311L,51312L,51313L,51314L, -51315L,51316L,51317L,51318L,51319L,51320L,51321L,51322L,51323L,51324L, -51325L,51326L,51327L,51328L,51329L,51330L,51331L,51332L,51333L,51334L, -51335L,51336L,51337L,51338L,51339L,51340L,51341L,51342L,51343L,51344L, -51345L,51346L,51347L,51348L,51349L,51350L,51351L,51352L,51353L,51354L, -51355L,51356L,51357L,51358L,51359L,51360L,51361L,51362L,51363L,51364L, -51365L,51366L,51367L,51368L,51369L,51370L,51371L,51372L,51373L,51374L, -51375L,51376L,51377L,51378L,51379L,51380L,51381L,51382L,51383L,51384L, -51385L,51386L,51387L,51388L,51389L,51390L,51391L,51392L,51393L,51394L, -51395L,51396L,51397L,51398L,51399L,51400L,51401L,51402L,51403L,51404L, -51405L,51406L,51407L,51408L,51409L,51410L,51411L,51412L,51413L,51414L, -51415L,51416L,51417L,51418L,51419L,51420L,51421L,51422L,51423L,51424L, -51425L,51426L,51427L,51428L,51429L,51430L,51431L,51432L,51433L,51434L, -51435L,51436L,51437L,51438L,51439L,51440L,51441L,51442L,51443L,51444L, -51445L,51446L,51447L,51448L,51449L,51450L,51451L,51452L,51453L,51454L, -51455L,51456L,51457L,51458L,51459L,51460L,51461L,51462L,51463L,51464L, -51465L,51466L,51467L,51468L,51469L,51470L,51471L,51472L,51473L,51474L, -51475L,51476L,51477L,51478L,51479L,51480L,51481L,51482L,51483L,51484L, -51485L,51486L,51487L,51488L,51489L,51490L,51491L,51492L,51493L,51494L, -51495L,51496L,51497L,51498L,51499L,51500L,51501L,51502L,51503L,51504L, -51505L,51506L,51507L,51508L,51509L,51510L,51511L,51512L,51513L,51514L, -51515L,51516L,51517L,51518L,51519L,51520L,51521L,51522L,51523L,51524L, -51525L,51526L,51527L,51528L,51529L,51530L,51531L,51532L,51533L,51534L, -51535L,51536L,51537L,51538L,51539L,51540L,51541L,51542L,51543L,51544L, -51545L,51546L,51547L,51548L,51549L,51550L,51551L,51552L,51553L,51554L, -51555L,51556L,51557L,51558L,51559L,51560L,51561L,51562L,51563L,51564L, -51565L,51566L,51567L,51568L,51569L,51570L,51571L,51572L,51573L,51574L, -51575L,51576L,51577L,51578L,51579L,51580L,51581L,51582L,51583L,51584L, -51585L,51586L,51587L,51588L,51589L,51590L,51591L,51592L,51593L,51594L, -51595L,51596L,51597L,51598L,51599L,51600L,51601L,51602L,51603L,51604L, -51605L,51606L,51607L,51608L,51609L,51610L,51611L,51612L,51613L,51614L, -51615L,51616L,51617L,51618L,51619L,51620L,51621L,51622L,51623L,51624L, -51625L,51626L,51627L,51628L,51629L,51630L,51631L,51632L,51633L,51634L, -51635L,51636L,51637L,51638L,51639L,51640L,51641L,51642L,51643L,51644L, -51645L,51646L,51647L,51648L,51649L,51650L,51651L,51652L,51653L,51654L, -51655L,51656L,51657L,51658L,51659L,51660L,51661L,51662L,51663L,51664L, -51665L,51666L,51667L,51668L,51669L,51670L,51671L,51672L,51673L,51674L, -51675L,51676L,51677L,51678L,51679L,51680L,51681L,51682L,51683L,51684L, -51685L,51686L,51687L,51688L,51689L,51690L,51691L,51692L,51693L,51694L, -51695L,51696L,51697L,51698L,51699L,51700L,51701L,51702L,51703L,51704L, -51705L,51706L,51707L,51708L,51709L,51710L,51711L,51712L,51713L,51714L, -51715L,51716L,51717L,51718L,51719L,51720L,51721L,51722L,51723L,51724L, -51725L,51726L,51727L,51728L,51729L,51730L,51731L,51732L,51733L,51734L, -51735L,51736L,51737L,51738L,51739L,51740L,51741L,51742L,51743L,51744L, -51745L,51746L,51747L,51748L,51749L,51750L,51751L,51752L,51753L,51754L, -51755L,51756L,51757L,51758L,51759L,51760L,51761L,51762L,51763L,51764L, -51765L,51766L,51767L,51768L,51769L,51770L,51771L,51772L,51773L,51774L, -51775L,51776L,51777L,51778L,51779L,51780L,51781L,51782L,51783L,51784L, -51785L,51786L,51787L,51788L,51789L,51790L,51791L,51792L,51793L,51794L, -51795L,51796L,51797L,51798L,51799L,51800L,51801L,51802L,51803L,51804L, -51805L,51806L,51807L,51808L,51809L,51810L,51811L,51812L,51813L,51814L, -51815L,51816L,51817L,51818L,51819L,51820L,51821L,51822L,51823L,51824L, -51825L,51826L,51827L,51828L,51829L,51830L,51831L,51832L,51833L,51834L, -51835L,51836L,51837L,51838L,51839L,51840L,51841L,51842L,51843L,51844L, -51845L,51846L,51847L,51848L,51849L,51850L,51851L,51852L,51853L,51854L, -51855L,51856L,51857L,51858L,51859L,51860L,51861L,51862L,51863L,51864L, -51865L,51866L,51867L,51868L,51869L,51870L,51871L,51872L,51873L,51874L, -51875L,51876L,51877L,51878L,51879L,51880L,51881L,51882L,51883L,51884L, -51885L,51886L,51887L,51888L,51889L,51890L,51891L,51892L,51893L,51894L, -51895L,51896L,51897L,51898L,51899L,51900L,51901L,51902L,51903L,51904L, -51905L,51906L,51907L,51908L,51909L,51910L,51911L,51912L,51913L,51914L, -51915L,51916L,51917L,51918L,51919L,51920L,51921L,51922L,51923L,51924L, -51925L,51926L,51927L,51928L,51929L,51930L,51931L,51932L,51933L,51934L, -51935L,51936L,51937L,51938L,51939L,51940L,51941L,51942L,51943L,51944L, -51945L,51946L,51947L,51948L,51949L,51950L,51951L,51952L,51953L,51954L, -51955L,51956L,51957L,51958L,51959L,51960L,51961L,51962L,51963L,51964L, -51965L,51966L,51967L,51968L,51969L,51970L,51971L,51972L,51973L,51974L, -51975L,51976L,51977L,51978L,51979L,51980L,51981L,51982L,51983L,51984L, -51985L,51986L,51987L,51988L,51989L,51990L,51991L,51992L,51993L,51994L, -51995L,51996L,51997L,51998L,51999L,52000L,52001L,52002L,52003L,52004L, -52005L,52006L,52007L,52008L,52009L,52010L,52011L,52012L,52013L,52014L, -52015L,52016L,52017L,52018L,52019L,52020L,52021L,52022L,52023L,52024L, -52025L,52026L,52027L,52028L,52029L,52030L,52031L,52032L,52033L,52034L, -52035L,52036L,52037L,52038L,52039L,52040L,52041L,52042L,52043L,52044L, -52045L,52046L,52047L,52048L,52049L,52050L,52051L,52052L,52053L,52054L, -52055L,52056L,52057L,52058L,52059L,52060L,52061L,52062L,52063L,52064L, -52065L,52066L,52067L,52068L,52069L,52070L,52071L,52072L,52073L,52074L, -52075L,52076L,52077L,52078L,52079L,52080L,52081L,52082L,52083L,52084L, -52085L,52086L,52087L,52088L,52089L,52090L,52091L,52092L,52093L,52094L, -52095L,52096L,52097L,52098L,52099L,52100L,52101L,52102L,52103L,52104L, -52105L,52106L,52107L,52108L,52109L,52110L,52111L,52112L,52113L,52114L, -52115L,52116L,52117L,52118L,52119L,52120L,52121L,52122L,52123L,52124L, -52125L,52126L,52127L,52128L,52129L,52130L,52131L,52132L,52133L,52134L, -52135L,52136L,52137L,52138L,52139L,52140L,52141L,52142L,52143L,52144L, -52145L,52146L,52147L,52148L,52149L,52150L,52151L,52152L,52153L,52154L, -52155L,52156L,52157L,52158L,52159L,52160L,52161L,52162L,52163L,52164L, -52165L,52166L,52167L,52168L,52169L,52170L,52171L,52172L,52173L,52174L, -52175L,52176L,52177L,52178L,52179L,52180L,52181L,52182L,52183L,52184L, -52185L,52186L,52187L,52188L,52189L,52190L,52191L,52192L,52193L,52194L, -52195L,52196L,52197L,52198L,52199L,52200L,52201L,52202L,52203L,52204L, -52205L,52206L,52207L,52208L,52209L,52210L,52211L,52212L,52213L,52214L, -52215L,52216L,52217L,52218L,52219L,52220L,52221L,52222L,52223L,52224L, -52225L,52226L,52227L,52228L,52229L,52230L,52231L,52232L,52233L,52234L, -52235L,52236L,52237L,52238L,52239L,52240L,52241L,52242L,52243L,52244L, -52245L,52246L,52247L,52248L,52249L,52250L,52251L,52252L,52253L,52254L, -52255L,52256L,52257L,52258L,52259L,52260L,52261L,52262L,52263L,52264L, -52265L,52266L,52267L,52268L,52269L,52270L,52271L,52272L,52273L,52274L, -52275L,52276L,52277L,52278L,52279L,52280L,52281L,52282L,52283L,52284L, -52285L,52286L,52287L,52288L,52289L,52290L,52291L,52292L,52293L,52294L, -52295L,52296L,52297L,52298L,52299L,52300L,52301L,52302L,52303L,52304L, -52305L,52306L,52307L,52308L,52309L,52310L,52311L,52312L,52313L,52314L, -52315L,52316L,52317L,52318L,52319L,52320L,52321L,52322L,52323L,52324L, -52325L,52326L,52327L,52328L,52329L,52330L,52331L,52332L,52333L,52334L, -52335L,52336L,52337L,52338L,52339L,52340L,52341L,52342L,52343L,52344L, -52345L,52346L,52347L,52348L,52349L,52350L,52351L,52352L,52353L,52354L, -52355L,52356L,52357L,52358L,52359L,52360L,52361L,52362L,52363L,52364L, -52365L,52366L,52367L,52368L,52369L,52370L,52371L,52372L,52373L,52374L, -52375L,52376L,52377L,52378L,52379L,52380L,52381L,52382L,52383L,52384L, -52385L,52386L,52387L,52388L,52389L,52390L,52391L,52392L,52393L,52394L, -52395L,52396L,52397L,52398L,52399L,52400L,52401L,52402L,52403L,52404L, -52405L,52406L,52407L,52408L,52409L,52410L,52411L,52412L,52413L,52414L, -52415L,52416L,52417L,52418L,52419L,52420L,52421L,52422L,52423L,52424L, -52425L,52426L,52427L,52428L,52429L,52430L,52431L,52432L,52433L,52434L, -52435L,52436L,52437L,52438L,52439L,52440L,52441L,52442L,52443L,52444L, -52445L,52446L,52447L,52448L,52449L,52450L,52451L,52452L,52453L,52454L, -52455L,52456L,52457L,52458L,52459L,52460L,52461L,52462L,52463L,52464L, -52465L,52466L,52467L,52468L,52469L,52470L,52471L,52472L,52473L,52474L, -52475L,52476L,52477L,52478L,52479L,52480L,52481L,52482L,52483L,52484L, -52485L,52486L,52487L,52488L,52489L,52490L,52491L,52492L,52493L,52494L, -52495L,52496L,52497L,52498L,52499L,52500L,52501L,52502L,52503L,52504L, -52505L,52506L,52507L,52508L,52509L,52510L,52511L,52512L,52513L,52514L, -52515L,52516L,52517L,52518L,52519L,52520L,52521L,52522L,52523L,52524L, -52525L,52526L,52527L,52528L,52529L,52530L,52531L,52532L,52533L,52534L, -52535L,52536L,52537L,52538L,52539L,52540L,52541L,52542L,52543L,52544L, -52545L,52546L,52547L,52548L,52549L,52550L,52551L,52552L,52553L,52554L, -52555L,52556L,52557L,52558L,52559L,52560L,52561L,52562L,52563L,52564L, -52565L,52566L,52567L,52568L,52569L,52570L,52571L,52572L,52573L,52574L, -52575L,52576L,52577L,52578L,52579L,52580L,52581L,52582L,52583L,52584L, -52585L,52586L,52587L,52588L,52589L,52590L,52591L,52592L,52593L,52594L, -52595L,52596L,52597L,52598L,52599L,52600L,52601L,52602L,52603L,52604L, -52605L,52606L,52607L,52608L,52609L,52610L,52611L,52612L,52613L,52614L, -52615L,52616L,52617L,52618L,52619L,52620L,52621L,52622L,52623L,52624L, -52625L,52626L,52627L,52628L,52629L,52630L,52631L,52632L,52633L,52634L, -52635L,52636L,52637L,52638L,52639L,52640L,52641L,52642L,52643L,52644L, -52645L,52646L,52647L,52648L,52649L,52650L,52651L,52652L,52653L,52654L, -52655L,52656L,52657L,52658L,52659L,52660L,52661L,52662L,52663L,52664L, -52665L,52666L,52667L,52668L,52669L,52670L,52671L,52672L,52673L,52674L, -52675L,52676L,52677L,52678L,52679L,52680L,52681L,52682L,52683L,52684L, -52685L,52686L,52687L,52688L,52689L,52690L,52691L,52692L,52693L,52694L, -52695L,52696L,52697L,52698L,52699L,52700L,52701L,52702L,52703L,52704L, -52705L,52706L,52707L,52708L,52709L,52710L,52711L,52712L,52713L,52714L, -52715L,52716L,52717L,52718L,52719L,52720L,52721L,52722L,52723L,52724L, -52725L,52726L,52727L,52728L,52729L,52730L,52731L,52732L,52733L,52734L, -52735L,52736L,52737L,52738L,52739L,52740L,52741L,52742L,52743L,52744L, -52745L,52746L,52747L,52748L,52749L,52750L,52751L,52752L,52753L,52754L, -52755L,52756L,52757L,52758L,52759L,52760L,52761L,52762L,52763L,52764L, -52765L,52766L,52767L,52768L,52769L,52770L,52771L,52772L,52773L,52774L, -52775L,52776L,52777L,52778L,52779L,52780L,52781L,52782L,52783L,52784L, -52785L,52786L,52787L,52788L,52789L,52790L,52791L,52792L,52793L,52794L, -52795L,52796L,52797L,52798L,52799L,52800L,52801L,52802L,52803L,52804L, -52805L,52806L,52807L,52808L,52809L,52810L,52811L,52812L,52813L,52814L, -52815L,52816L,52817L,52818L,52819L,52820L,52821L,52822L,52823L,52824L, -52825L,52826L,52827L,52828L,52829L,52830L,52831L,52832L,52833L,52834L, -52835L,52836L,52837L,52838L,52839L,52840L,52841L,52842L,52843L,52844L, -52845L,52846L,52847L,52848L,52849L,52850L,52851L,52852L,52853L,52854L, -52855L,52856L,52857L,52858L,52859L,52860L,52861L,52862L,52863L,52864L, -52865L,52866L,52867L,52868L,52869L,52870L,52871L,52872L,52873L,52874L, -52875L,52876L,52877L,52878L,52879L,52880L,52881L,52882L,52883L,52884L, -52885L,52886L,52887L,52888L,52889L,52890L,52891L,52892L,52893L,52894L, -52895L,52896L,52897L,52898L,52899L,52900L,52901L,52902L,52903L,52904L, -52905L,52906L,52907L,52908L,52909L,52910L,52911L,52912L,52913L,52914L, -52915L,52916L,52917L,52918L,52919L,52920L,52921L,52922L,52923L,52924L, -52925L,52926L,52927L,52928L,52929L,52930L,52931L,52932L,52933L,52934L, -52935L,52936L,52937L,52938L,52939L,52940L,52941L,52942L,52943L,52944L, -52945L,52946L,52947L,52948L,52949L,52950L,52951L,52952L,52953L,52954L, -52955L,52956L,52957L,52958L,52959L,52960L,52961L,52962L,52963L,52964L, -52965L,52966L,52967L,52968L,52969L,52970L,52971L,52972L,52973L,52974L, -52975L,52976L,52977L,52978L,52979L,52980L,52981L,52982L,52983L,52984L, -52985L,52986L,52987L,52988L,52989L,52990L,52991L,52992L,52993L,52994L, -52995L,52996L,52997L,52998L,52999L,53000L,53001L,53002L,53003L,53004L, -53005L,53006L,53007L,53008L,53009L,53010L,53011L,53012L,53013L,53014L, -53015L,53016L,53017L,53018L,53019L,53020L,53021L,53022L,53023L,53024L, -53025L,53026L,53027L,53028L,53029L,53030L,53031L,53032L,53033L,53034L, -53035L,53036L,53037L,53038L,53039L,53040L,53041L,53042L,53043L,53044L, -53045L,53046L,53047L,53048L,53049L,53050L,53051L,53052L,53053L,53054L, -53055L,53056L,53057L,53058L,53059L,53060L,53061L,53062L,53063L,53064L, -53065L,53066L,53067L,53068L,53069L,53070L,53071L,53072L,53073L,53074L, -53075L,53076L,53077L,53078L,53079L,53080L,53081L,53082L,53083L,53084L, -53085L,53086L,53087L,53088L,53089L,53090L,53091L,53092L,53093L,53094L, -53095L,53096L,53097L,53098L,53099L,53100L,53101L,53102L,53103L,53104L, -53105L,53106L,53107L,53108L,53109L,53110L,53111L,53112L,53113L,53114L, -53115L,53116L,53117L,53118L,53119L,53120L,53121L,53122L,53123L,53124L, -53125L,53126L,53127L,53128L,53129L,53130L,53131L,53132L,53133L,53134L, -53135L,53136L,53137L,53138L,53139L,53140L,53141L,53142L,53143L,53144L, -53145L,53146L,53147L,53148L,53149L,53150L,53151L,53152L,53153L,53154L, -53155L,53156L,53157L,53158L,53159L,53160L,53161L,53162L,53163L,53164L, -53165L,53166L,53167L,53168L,53169L,53170L,53171L,53172L,53173L,53174L, -53175L,53176L,53177L,53178L,53179L,53180L,53181L,53182L,53183L,53184L, -53185L,53186L,53187L,53188L,53189L,53190L,53191L,53192L,53193L,53194L, -53195L,53196L,53197L,53198L,53199L,53200L,53201L,53202L,53203L,53204L, -53205L,53206L,53207L,53208L,53209L,53210L,53211L,53212L,53213L,53214L, -53215L,53216L,53217L,53218L,53219L,53220L,53221L,53222L,53223L,53224L, -53225L,53226L,53227L,53228L,53229L,53230L,53231L,53232L,53233L,53234L, -53235L,53236L,53237L,53238L,53239L,53240L,53241L,53242L,53243L,53244L, -53245L,53246L,53247L,53248L,53249L,53250L,53251L,53252L,53253L,53254L, -53255L,53256L,53257L,53258L,53259L,53260L,53261L,53262L,53263L,53264L, -53265L,53266L,53267L,53268L,53269L,53270L,53271L,53272L,53273L,53274L, -53275L,53276L,53277L,53278L,53279L,53280L,53281L,53282L,53283L,53284L, -53285L,53286L,53287L,53288L,53289L,53290L,53291L,53292L,53293L,53294L, -53295L,53296L,53297L,53298L,53299L,53300L,53301L,53302L,53303L,53304L, -53305L,53306L,53307L,53308L,53309L,53310L,53311L,53312L,53313L,53314L, -53315L,53316L,53317L,53318L,53319L,53320L,53321L,53322L,53323L,53324L, -53325L,53326L,53327L,53328L,53329L,53330L,53331L,53332L,53333L,53334L, -53335L,53336L,53337L,53338L,53339L,53340L,53341L,53342L,53343L,53344L, -53345L,53346L,53347L,53348L,53349L,53350L,53351L,53352L,53353L,53354L, -53355L,53356L,53357L,53358L,53359L,53360L,53361L,53362L,53363L,53364L, -53365L,53366L,53367L,53368L,53369L,53370L,53371L,53372L,53373L,53374L, -53375L,53376L,53377L,53378L,53379L,53380L,53381L,53382L,53383L,53384L, -53385L,53386L,53387L,53388L,53389L,53390L,53391L,53392L,53393L,53394L, -53395L,53396L,53397L,53398L,53399L,53400L,53401L,53402L,53403L,53404L, -53405L,53406L,53407L,53408L,53409L,53410L,53411L,53412L,53413L,53414L, -53415L,53416L,53417L,53418L,53419L,53420L,53421L,53422L,53423L,53424L, -53425L,53426L,53427L,53428L,53429L,53430L,53431L,53432L,53433L,53434L, -53435L,53436L,53437L,53438L,53439L,53440L,53441L,53442L,53443L,53444L, -53445L,53446L,53447L,53448L,53449L,53450L,53451L,53452L,53453L,53454L, -53455L,53456L,53457L,53458L,53459L,53460L,53461L,53462L,53463L,53464L, -53465L,53466L,53467L,53468L,53469L,53470L,53471L,53472L,53473L,53474L, -53475L,53476L,53477L,53478L,53479L,53480L,53481L,53482L,53483L,53484L, -53485L,53486L,53487L,53488L,53489L,53490L,53491L,53492L,53493L,53494L, -53495L,53496L,53497L,53498L,53499L,53500L,53501L,53502L,53503L,53504L, -53505L,53506L,53507L,53508L,53509L,53510L,53511L,53512L,53513L,53514L, -53515L,53516L,53517L,53518L,53519L,53520L,53521L,53522L,53523L,53524L, -53525L,53526L,53527L,53528L,53529L,53530L,53531L,53532L,53533L,53534L, -53535L,53536L,53537L,53538L,53539L,53540L,53541L,53542L,53543L,53544L, -53545L,53546L,53547L,53548L,53549L,53550L,53551L,53552L,53553L,53554L, -53555L,53556L,53557L,53558L,53559L,53560L,53561L,53562L,53563L,53564L, -53565L,53566L,53567L,53568L,53569L,53570L,53571L,53572L,53573L,53574L, -53575L,53576L,53577L,53578L,53579L,53580L,53581L,53582L,53583L,53584L, -53585L,53586L,53587L,53588L,53589L,53590L,53591L,53592L,53593L,53594L, -53595L,53596L,53597L,53598L,53599L,53600L,53601L,53602L,53603L,53604L, -53605L,53606L,53607L,53608L,53609L,53610L,53611L,53612L,53613L,53614L, -53615L,53616L,53617L,53618L,53619L,53620L,53621L,53622L,53623L,53624L, -53625L,53626L,53627L,53628L,53629L,53630L,53631L,53632L,53633L,53634L, -53635L,53636L,53637L,53638L,53639L,53640L,53641L,53642L,53643L,53644L, -53645L,53646L,53647L,53648L,53649L,53650L,53651L,53652L,53653L,53654L, -53655L,53656L,53657L,53658L,53659L,53660L,53661L,53662L,53663L,53664L, -53665L,53666L,53667L,53668L,53669L,53670L,53671L,53672L,53673L,53674L, -53675L,53676L,53677L,53678L,53679L,53680L,53681L,53682L,53683L,53684L, -53685L,53686L,53687L,53688L,53689L,53690L,53691L,53692L,53693L,53694L, -53695L,53696L,53697L,53698L,53699L,53700L,53701L,53702L,53703L,53704L, -53705L,53706L,53707L,53708L,53709L,53710L,53711L,53712L,53713L,53714L, -53715L,53716L,53717L,53718L,53719L,53720L,53721L,53722L,53723L,53724L, -53725L,53726L,53727L,53728L,53729L,53730L,53731L,53732L,53733L,53734L, -53735L,53736L,53737L,53738L,53739L,53740L,53741L,53742L,53743L,53744L, -53745L,53746L,53747L,53748L,53749L,53750L,53751L,53752L,53753L,53754L, -53755L,53756L,53757L,53758L,53759L,53760L,53761L,53762L,53763L,53764L, -53765L,53766L,53767L,53768L,53769L,53770L,53771L,53772L,53773L,53774L, -53775L,53776L,53777L,53778L,53779L,53780L,53781L,53782L,53783L,53784L, -53785L,53786L,53787L,53788L,53789L,53790L,53791L,53792L,53793L,53794L, -53795L,53796L,53797L,53798L,53799L,53800L,53801L,53802L,53803L,53804L, -53805L,53806L,53807L,53808L,53809L,53810L,53811L,53812L,53813L,53814L, -53815L,53816L,53817L,53818L,53819L,53820L,53821L,53822L,53823L,53824L, -53825L,53826L,53827L,53828L,53829L,53830L,53831L,53832L,53833L,53834L, -53835L,53836L,53837L,53838L,53839L,53840L,53841L,53842L,53843L,53844L, -53845L,53846L,53847L,53848L,53849L,53850L,53851L,53852L,53853L,53854L, -53855L,53856L,53857L,53858L,53859L,53860L,53861L,53862L,53863L,53864L, -53865L,53866L,53867L,53868L,53869L,53870L,53871L,53872L,53873L,53874L, -53875L,53876L,53877L,53878L,53879L,53880L,53881L,53882L,53883L,53884L, -53885L,53886L,53887L,53888L,53889L,53890L,53891L,53892L,53893L,53894L, -53895L,53896L,53897L,53898L,53899L,53900L,53901L,53902L,53903L,53904L, -53905L,53906L,53907L,53908L,53909L,53910L,53911L,53912L,53913L,53914L, -53915L,53916L,53917L,53918L,53919L,53920L,53921L,53922L,53923L,53924L, -53925L,53926L,53927L,53928L,53929L,53930L,53931L,53932L,53933L,53934L, -53935L,53936L,53937L,53938L,53939L,53940L,53941L,53942L,53943L,53944L, -53945L,53946L,53947L,53948L,53949L,53950L,53951L,53952L,53953L,53954L, -53955L,53956L,53957L,53958L,53959L,53960L,53961L,53962L,53963L,53964L, -53965L,53966L,53967L,53968L,53969L,53970L,53971L,53972L,53973L,53974L, -53975L,53976L,53977L,53978L,53979L,53980L,53981L,53982L,53983L,53984L, -53985L,53986L,53987L,53988L,53989L,53990L,53991L,53992L,53993L,53994L, -53995L,53996L,53997L,53998L,53999L,54000L,54001L,54002L,54003L,54004L, -54005L,54006L,54007L,54008L,54009L,54010L,54011L,54012L,54013L,54014L, -54015L,54016L,54017L,54018L,54019L,54020L,54021L,54022L,54023L,54024L, -54025L,54026L,54027L,54028L,54029L,54030L,54031L,54032L,54033L,54034L, -54035L,54036L,54037L,54038L,54039L,54040L,54041L,54042L,54043L,54044L, -54045L,54046L,54047L,54048L,54049L,54050L,54051L,54052L,54053L,54054L, -54055L,54056L,54057L,54058L,54059L,54060L,54061L,54062L,54063L,54064L, -54065L,54066L,54067L,54068L,54069L,54070L,54071L,54072L,54073L,54074L, -54075L,54076L,54077L,54078L,54079L,54080L,54081L,54082L,54083L,54084L, -54085L,54086L,54087L,54088L,54089L,54090L,54091L,54092L,54093L,54094L, -54095L,54096L,54097L,54098L,54099L,54100L,54101L,54102L,54103L,54104L, -54105L,54106L,54107L,54108L,54109L,54110L,54111L,54112L,54113L,54114L, -54115L,54116L,54117L,54118L,54119L,54120L,54121L,54122L,54123L,54124L, -54125L,54126L,54127L,54128L,54129L,54130L,54131L,54132L,54133L,54134L, -54135L,54136L,54137L,54138L,54139L,54140L,54141L,54142L,54143L,54144L, -54145L,54146L,54147L,54148L,54149L,54150L,54151L,54152L,54153L,54154L, -54155L,54156L,54157L,54158L,54159L,54160L,54161L,54162L,54163L,54164L, -54165L,54166L,54167L,54168L,54169L,54170L,54171L,54172L,54173L,54174L, -54175L,54176L,54177L,54178L,54179L,54180L,54181L,54182L,54183L,54184L, -54185L,54186L,54187L,54188L,54189L,54190L,54191L,54192L,54193L,54194L, -54195L,54196L,54197L,54198L,54199L,54200L,54201L,54202L,54203L,54204L, -54205L,54206L,54207L,54208L,54209L,54210L,54211L,54212L,54213L,54214L, -54215L,54216L,54217L,54218L,54219L,54220L,54221L,54222L,54223L,54224L, -54225L,54226L,54227L,54228L,54229L,54230L,54231L,54232L,54233L,54234L, -54235L,54236L,54237L,54238L,54239L,54240L,54241L,54242L,54243L,54244L, -54245L,54246L,54247L,54248L,54249L,54250L,54251L,54252L,54253L,54254L, -54255L,54256L,54257L,54258L,54259L,54260L,54261L,54262L,54263L,54264L, -54265L,54266L,54267L,54268L,54269L,54270L,54271L,54272L,54273L,54274L, -54275L,54276L,54277L,54278L,54279L,54280L,54281L,54282L,54283L,54284L, -54285L,54286L,54287L,54288L,54289L,54290L,54291L,54292L,54293L,54294L, -54295L,54296L,54297L,54298L,54299L,54300L,54301L,54302L,54303L,54304L, -54305L,54306L,54307L,54308L,54309L,54310L,54311L,54312L,54313L,54314L, -54315L,54316L,54317L,54318L,54319L,54320L,54321L,54322L,54323L,54324L, -54325L,54326L,54327L,54328L,54329L,54330L,54331L,54332L,54333L,54334L, -54335L,54336L,54337L,54338L,54339L,54340L,54341L,54342L,54343L,54344L, -54345L,54346L,54347L,54348L,54349L,54350L,54351L,54352L,54353L,54354L, -54355L,54356L,54357L,54358L,54359L,54360L,54361L,54362L,54363L,54364L, -54365L,54366L,54367L,54368L,54369L,54370L,54371L,54372L,54373L,54374L, -54375L,54376L,54377L,54378L,54379L,54380L,54381L,54382L,54383L,54384L, -54385L,54386L,54387L,54388L,54389L,54390L,54391L,54392L,54393L,54394L, -54395L,54396L,54397L,54398L,54399L,54400L,54401L,54402L,54403L,54404L, -54405L,54406L,54407L,54408L,54409L,54410L,54411L,54412L,54413L,54414L, -54415L,54416L,54417L,54418L,54419L,54420L,54421L,54422L,54423L,54424L, -54425L,54426L,54427L,54428L,54429L,54430L,54431L,54432L,54433L,54434L, -54435L,54436L,54437L,54438L,54439L,54440L,54441L,54442L,54443L,54444L, -54445L,54446L,54447L,54448L,54449L,54450L,54451L,54452L,54453L,54454L, -54455L,54456L,54457L,54458L,54459L,54460L,54461L,54462L,54463L,54464L, -54465L,54466L,54467L,54468L,54469L,54470L,54471L,54472L,54473L,54474L, -54475L,54476L,54477L,54478L,54479L,54480L,54481L,54482L,54483L,54484L, -54485L,54486L,54487L,54488L,54489L,54490L,54491L,54492L,54493L,54494L, -54495L,54496L,54497L,54498L,54499L,54500L,54501L,54502L,54503L,54504L, -54505L,54506L,54507L,54508L,54509L,54510L,54511L,54512L,54513L,54514L, -54515L,54516L,54517L,54518L,54519L,54520L,54521L,54522L,54523L,54524L, -54525L,54526L,54527L,54528L,54529L,54530L,54531L,54532L,54533L,54534L, -54535L,54536L,54537L,54538L,54539L,54540L,54541L,54542L,54543L,54544L, -54545L,54546L,54547L,54548L,54549L,54550L,54551L,54552L,54553L,54554L, -54555L,54556L,54557L,54558L,54559L,54560L,54561L,54562L,54563L,54564L, -54565L,54566L,54567L,54568L,54569L,54570L,54571L,54572L,54573L,54574L, -54575L,54576L,54577L,54578L,54579L,54580L,54581L,54582L,54583L,54584L, -54585L,54586L,54587L,54588L,54589L,54590L,54591L,54592L,54593L,54594L, -54595L,54596L,54597L,54598L,54599L,54600L,54601L,54602L,54603L,54604L, -54605L,54606L,54607L,54608L,54609L,54610L,54611L,54612L,54613L,54614L, -54615L,54616L,54617L,54618L,54619L,54620L,54621L,54622L,54623L,54624L, -54625L,54626L,54627L,54628L,54629L,54630L,54631L,54632L,54633L,54634L, -54635L,54636L,54637L,54638L,54639L,54640L,54641L,54642L,54643L,54644L, -54645L,54646L,54647L,54648L,54649L,54650L,54651L,54652L,54653L,54654L, -54655L,54656L,54657L,54658L,54659L,54660L,54661L,54662L,54663L,54664L, -54665L,54666L,54667L,54668L,54669L,54670L,54671L,54672L,54673L,54674L, -54675L,54676L,54677L,54678L,54679L,54680L,54681L,54682L,54683L,54684L, -54685L,54686L,54687L,54688L,54689L,54690L,54691L,54692L,54693L,54694L, -54695L,54696L,54697L,54698L,54699L,54700L,54701L,54702L,54703L,54704L, -54705L,54706L,54707L,54708L,54709L,54710L,54711L,54712L,54713L,54714L, -54715L,54716L,54717L,54718L,54719L,54720L,54721L,54722L,54723L,54724L, -54725L,54726L,54727L,54728L,54729L,54730L,54731L,54732L,54733L,54734L, -54735L,54736L,54737L,54738L,54739L,54740L,54741L,54742L,54743L,54744L, -54745L,54746L,54747L,54748L,54749L,54750L,54751L,54752L,54753L,54754L, -54755L,54756L,54757L,54758L,54759L,54760L,54761L,54762L,54763L,54764L, -54765L,54766L,54767L,54768L,54769L,54770L,54771L,54772L,54773L,54774L, -54775L,54776L,54777L,54778L,54779L,54780L,54781L,54782L,54783L,54784L, -54785L,54786L,54787L,54788L,54789L,54790L,54791L,54792L,54793L,54794L, -54795L,54796L,54797L,54798L,54799L,54800L,54801L,54802L,54803L,54804L, -54805L,54806L,54807L,54808L,54809L,54810L,54811L,54812L,54813L,54814L, -54815L,54816L,54817L,54818L,54819L,54820L,54821L,54822L,54823L,54824L, -54825L,54826L,54827L,54828L,54829L,54830L,54831L,54832L,54833L,54834L, -54835L,54836L,54837L,54838L,54839L,54840L,54841L,54842L,54843L,54844L, -54845L,54846L,54847L,54848L,54849L,54850L,54851L,54852L,54853L,54854L, -54855L,54856L,54857L,54858L,54859L,54860L,54861L,54862L,54863L,54864L, -54865L,54866L,54867L,54868L,54869L,54870L,54871L,54872L,54873L,54874L, -54875L,54876L,54877L,54878L,54879L,54880L,54881L,54882L,54883L,54884L, -54885L,54886L,54887L,54888L,54889L,54890L,54891L,54892L,54893L,54894L, -54895L,54896L,54897L,54898L,54899L,54900L,54901L,54902L,54903L,54904L, -54905L,54906L,54907L,54908L,54909L,54910L,54911L,54912L,54913L,54914L, -54915L,54916L,54917L,54918L,54919L,54920L,54921L,54922L,54923L,54924L, -54925L,54926L,54927L,54928L,54929L,54930L,54931L,54932L,54933L,54934L, -54935L,54936L,54937L,54938L,54939L,54940L,54941L,54942L,54943L,54944L, -54945L,54946L,54947L,54948L,54949L,54950L,54951L,54952L,54953L,54954L, -54955L,54956L,54957L,54958L,54959L,54960L,54961L,54962L,54963L,54964L, -54965L,54966L,54967L,54968L,54969L,54970L,54971L,54972L,54973L,54974L, -54975L,54976L,54977L,54978L,54979L,54980L,54981L,54982L,54983L,54984L, -54985L,54986L,54987L,54988L,54989L,54990L,54991L,54992L,54993L,54994L, -54995L,54996L,54997L,54998L,54999L,55000L,55001L,55002L,55003L,55004L, -55005L,55006L,55007L,55008L,55009L,55010L,55011L,55012L,55013L,55014L, -55015L,55016L,55017L,55018L,55019L,55020L,55021L,55022L,55023L,55024L, -55025L,55026L,55027L,55028L,55029L,55030L,55031L,55032L,55033L,55034L, -55035L,55036L,55037L,55038L,55039L,55040L,55041L,55042L,55043L,55044L, -55045L,55046L,55047L,55048L,55049L,55050L,55051L,55052L,55053L,55054L, -55055L,55056L,55057L,55058L,55059L,55060L,55061L,55062L,55063L,55064L, -55065L,55066L,55067L,55068L,55069L,55070L,55071L,55072L,55073L,55074L, -55075L,55076L,55077L,55078L,55079L,55080L,55081L,55082L,55083L,55084L, -55085L,55086L,55087L,55088L,55089L,55090L,55091L,55092L,55093L,55094L, -55095L,55096L,55097L,55098L,55099L,55100L,55101L,55102L,55103L,55104L, -55105L,55106L,55107L,55108L,55109L,55110L,55111L,55112L,55113L,55114L, -55115L,55116L,55117L,55118L,55119L,55120L,55121L,55122L,55123L,55124L, -55125L,55126L,55127L,55128L,55129L,55130L,55131L,55132L,55133L,55134L, -55135L,55136L,55137L,55138L,55139L,55140L,55141L,55142L,55143L,55144L, -55145L,55146L,55147L,55148L,55149L,55150L,55151L,55152L,55153L,55154L, -55155L,55156L,55157L,55158L,55159L,55160L,55161L,55162L,55163L,55164L, -55165L,55166L,55167L,55168L,55169L,55170L,55171L,55172L,55173L,55174L, -55175L,55176L,55177L,55178L,55179L,55180L,55181L,55182L,55183L,55184L, -55185L,55186L,55187L,55188L,55189L,55190L,55191L,55192L,55193L,55194L, -55195L,55196L,55197L,55198L,55199L,55200L,55201L,55202L,55203L,55204L, -55205L,55206L,55207L,55208L,55209L,55210L,55211L,55212L,55213L,55214L, -55215L,55216L,55217L,55218L,55219L,55220L,55221L,55222L,55223L,55224L, -55225L,55226L,55227L,55228L,55229L,55230L,55231L,55232L,55233L,55234L, -55235L,55236L,55237L,55238L,55239L,55240L,55241L,55242L,55243L,55244L, -55245L,55246L,55247L,55248L,55249L,55250L,55251L,55252L,55253L,55254L, -55255L,55256L,55257L,55258L,55259L,55260L,55261L,55262L,55263L,55264L, -55265L,55266L,55267L,55268L,55269L,55270L,55271L,55272L,55273L,55274L, -55275L,55276L,55277L,55278L,55279L,55280L,55281L,55282L,55283L,55284L, -55285L,55286L,55287L,55288L,55289L,55290L,55291L,55292L,55293L,55294L, -55295L,55296L,55297L,55298L,55299L,55300L,55301L,55302L,55303L,55304L, -55305L,55306L,55307L,55308L,55309L,55310L,55311L,55312L,55313L,55314L, -55315L,55316L,55317L,55318L,55319L,55320L,55321L,55322L,55323L,55324L, -55325L,55326L,55327L,55328L,55329L,55330L,55331L,55332L,55333L,55334L, -55335L,55336L,55337L,55338L,55339L,55340L,55341L,55342L,55343L,55344L, -55345L,55346L,55347L,55348L,55349L,55350L,55351L,55352L,55353L,55354L, -55355L,55356L,55357L,55358L,55359L,55360L,55361L,55362L,55363L,55364L, -55365L,55366L,55367L,55368L,55369L,55370L,55371L,55372L,55373L,55374L, -55375L,55376L,55377L,55378L,55379L,55380L,55381L,55382L,55383L,55384L, -55385L,55386L,55387L,55388L,55389L,55390L,55391L,55392L,55393L,55394L, -55395L,55396L,55397L,55398L,55399L,55400L,55401L,55402L,55403L,55404L, -55405L,55406L,55407L,55408L,55409L,55410L,55411L,55412L,55413L,55414L, -55415L,55416L,55417L,55418L,55419L,55420L,55421L,55422L,55423L,55424L, -55425L,55426L,55427L,55428L,55429L,55430L,55431L,55432L,55433L,55434L, -55435L,55436L,55437L,55438L,55439L,55440L,55441L,55442L,55443L,55444L, -55445L,55446L,55447L,55448L,55449L,55450L,55451L,55452L,55453L,55454L, -55455L,55456L,55457L,55458L,55459L,55460L,55461L,55462L,55463L,55464L, -55465L,55466L,55467L,55468L,55469L,55470L,55471L,55472L,55473L,55474L, -55475L,55476L,55477L,55478L,55479L,55480L,55481L,55482L,55483L,55484L, -55485L,55486L,55487L,55488L,55489L,55490L,55491L,55492L,55493L,55494L, -55495L,55496L,55497L,55498L,55499L,55500L,55501L,55502L,55503L,55504L, -55505L,55506L,55507L,55508L,55509L,55510L,55511L,55512L,55513L,55514L, -55515L,55516L,55517L,55518L,55519L,55520L,55521L,55522L,55523L,55524L, -55525L,55526L,55527L,55528L,55529L,55530L,55531L,55532L,55533L,55534L, -55535L,55536L,55537L,55538L,55539L,55540L,55541L,55542L,55543L,55544L, -55545L,55546L,55547L,55548L,55549L,55550L,55551L,55552L,55553L,55554L, -55555L,55556L,55557L,55558L,55559L,55560L,55561L,55562L,55563L,55564L, -55565L,55566L,55567L,55568L,55569L,55570L,55571L,55572L,55573L,55574L, -55575L,55576L,55577L,55578L,55579L,55580L,55581L,55582L,55583L,55584L, -55585L,55586L,55587L,55588L,55589L,55590L,55591L,55592L,55593L,55594L, -55595L,55596L,55597L,55598L,55599L,55600L,55601L,55602L,55603L,55604L, -55605L,55606L,55607L,55608L,55609L,55610L,55611L,55612L,55613L,55614L, -55615L,55616L,55617L,55618L,55619L,55620L,55621L,55622L,55623L,55624L, -55625L,55626L,55627L,55628L,55629L,55630L,55631L,55632L,55633L,55634L, -55635L,55636L,55637L,55638L,55639L,55640L,55641L,55642L,55643L,55644L, -55645L,55646L,55647L,55648L,55649L,55650L,55651L,55652L,55653L,55654L, -55655L,55656L,55657L,55658L,55659L,55660L,55661L,55662L,55663L,55664L, -55665L,55666L,55667L,55668L,55669L,55670L,55671L,55672L,55673L,55674L, -55675L,55676L,55677L,55678L,55679L,55680L,55681L,55682L,55683L,55684L, -55685L,55686L,55687L,55688L,55689L,55690L,55691L,55692L,55693L,55694L, -55695L,55696L,55697L,55698L,55699L,55700L,55701L,55702L,55703L,55704L, -55705L,55706L,55707L,55708L,55709L,55710L,55711L,55712L,55713L,55714L, -55715L,55716L,55717L,55718L,55719L,55720L,55721L,55722L,55723L,55724L, -55725L,55726L,55727L,55728L,55729L,55730L,55731L,55732L,55733L,55734L, -55735L,55736L,55737L,55738L,55739L,55740L,55741L,55742L,55743L,55744L, -55745L,55746L,55747L,55748L,55749L,55750L,55751L,55752L,55753L,55754L, -55755L,55756L,55757L,55758L,55759L,55760L,55761L,55762L,55763L,55764L, -55765L,55766L,55767L,55768L,55769L,55770L,55771L,55772L,55773L,55774L, -55775L,55776L,55777L,55778L,55779L,55780L,55781L,55782L,55783L,55784L, -55785L,55786L,55787L,55788L,55789L,55790L,55791L,55792L,55793L,55794L, -55795L,55796L,55797L,55798L,55799L,55800L,55801L,55802L,55803L,55804L, -55805L,55806L,55807L,55808L,55809L,55810L,55811L,55812L,55813L,55814L, -55815L,55816L,55817L,55818L,55819L,55820L,55821L,55822L,55823L,55824L, -55825L,55826L,55827L,55828L,55829L,55830L,55831L,55832L,55833L,55834L, -55835L,55836L,55837L,55838L,55839L,55840L,55841L,55842L,55843L,55844L, -55845L,55846L,55847L,55848L,55849L,55850L,55851L,55852L,55853L,55854L, -55855L,55856L,55857L,55858L,55859L,55860L,55861L,55862L,55863L,55864L, -55865L,55866L,55867L,55868L,55869L,55870L,55871L,55872L,55873L,55874L, -55875L,55876L,55877L,55878L,55879L,55880L,55881L,55882L,55883L,55884L, -55885L,55886L,55887L,55888L,55889L,55890L,55891L,55892L,55893L,55894L, -55895L,55896L,55897L,55898L,55899L,55900L,55901L,55902L,55903L,55904L, -55905L,55906L,55907L,55908L,55909L,55910L,55911L,55912L,55913L,55914L, -55915L,55916L,55917L,55918L,55919L,55920L,55921L,55922L,55923L,55924L, -55925L,55926L,55927L,55928L,55929L,55930L,55931L,55932L,55933L,55934L, -55935L,55936L,55937L,55938L,55939L,55940L,55941L,55942L,55943L,55944L, -55945L,55946L,55947L,55948L,55949L,55950L,55951L,55952L,55953L,55954L, -55955L,55956L,55957L,55958L,55959L,55960L,55961L,55962L,55963L,55964L, -55965L,55966L,55967L,55968L,55969L,55970L,55971L,55972L,55973L,55974L, -55975L,55976L,55977L,55978L,55979L,55980L,55981L,55982L,55983L,55984L, -55985L,55986L,55987L,55988L,55989L,55990L,55991L,55992L,55993L,55994L, -55995L,55996L,55997L,55998L,55999L,56000L,56001L,56002L,56003L,56004L, -56005L,56006L,56007L,56008L,56009L,56010L,56011L,56012L,56013L,56014L, -56015L,56016L,56017L,56018L,56019L,56020L,56021L,56022L,56023L,56024L, -56025L,56026L,56027L,56028L,56029L,56030L,56031L,56032L,56033L,56034L, -56035L,56036L,56037L,56038L,56039L,56040L,56041L,56042L,56043L,56044L, -56045L,56046L,56047L,56048L,56049L,56050L,56051L,56052L,56053L,56054L, -56055L,56056L,56057L,56058L,56059L,56060L,56061L,56062L,56063L,56064L, -56065L,56066L,56067L,56068L,56069L,56070L,56071L,56072L,56073L,56074L, -56075L,56076L,56077L,56078L,56079L,56080L,56081L,56082L,56083L,56084L, -56085L,56086L,56087L,56088L,56089L,56090L,56091L,56092L,56093L,56094L, -56095L,56096L,56097L,56098L,56099L,56100L,56101L,56102L,56103L,56104L, -56105L,56106L,56107L,56108L,56109L,56110L,56111L,56112L,56113L,56114L, -56115L,56116L,56117L,56118L,56119L,56120L,56121L,56122L,56123L,56124L, -56125L,56126L,56127L,56128L,56129L,56130L,56131L,56132L,56133L,56134L, -56135L,56136L,56137L,56138L,56139L,56140L,56141L,56142L,56143L,56144L, -56145L,56146L,56147L,56148L,56149L,56150L,56151L,56152L,56153L,56154L, -56155L,56156L,56157L,56158L,56159L,56160L,56161L,56162L,56163L,56164L, -56165L,56166L,56167L,56168L,56169L,56170L,56171L,56172L,56173L,56174L, -56175L,56176L,56177L,56178L,56179L,56180L,56181L,56182L,56183L,56184L, -56185L,56186L,56187L,56188L,56189L,56190L,56191L,56192L,56193L,56194L, -56195L,56196L,56197L,56198L,56199L,56200L,56201L,56202L,56203L,56204L, -56205L,56206L,56207L,56208L,56209L,56210L,56211L,56212L,56213L,56214L, -56215L,56216L,56217L,56218L,56219L,56220L,56221L,56222L,56223L,56224L, -56225L,56226L,56227L,56228L,56229L,56230L,56231L,56232L,56233L,56234L, -56235L,56236L,56237L,56238L,56239L,56240L,56241L,56242L,56243L,56244L, -56245L,56246L,56247L,56248L,56249L,56250L,56251L,56252L,56253L,56254L, -56255L,56256L,56257L,56258L,56259L,56260L,56261L,56262L,56263L,56264L, -56265L,56266L,56267L,56268L,56269L,56270L,56271L,56272L,56273L,56274L, -56275L,56276L,56277L,56278L,56279L,56280L,56281L,56282L,56283L,56284L, -56285L,56286L,56287L,56288L,56289L,56290L,56291L,56292L,56293L,56294L, -56295L,56296L,56297L,56298L,56299L,56300L,56301L,56302L,56303L,56304L, -56305L,56306L,56307L,56308L,56309L,56310L,56311L,56312L,56313L,56314L, -56315L,56316L,56317L,56318L,56319L,56320L,56321L,56322L,56323L,56324L, -56325L,56326L,56327L,56328L,56329L,56330L,56331L,56332L,56333L,56334L, -56335L,56336L,56337L,56338L,56339L,56340L,56341L,56342L,56343L,56344L, -56345L,56346L,56347L,56348L,56349L,56350L,56351L,56352L,56353L,56354L, -56355L,56356L,56357L,56358L,56359L,56360L,56361L,56362L,56363L,56364L, -56365L,56366L,56367L,56368L,56369L,56370L,56371L,56372L,56373L,56374L, -56375L,56376L,56377L,56378L,56379L,56380L,56381L,56382L,56383L,56384L, -56385L,56386L,56387L,56388L,56389L,56390L,56391L,56392L,56393L,56394L, -56395L,56396L,56397L,56398L,56399L,56400L,56401L,56402L,56403L,56404L, -56405L,56406L,56407L,56408L,56409L,56410L,56411L,56412L,56413L,56414L, -56415L,56416L,56417L,56418L,56419L,56420L,56421L,56422L,56423L,56424L, -56425L,56426L,56427L,56428L,56429L,56430L,56431L,56432L,56433L,56434L, -56435L,56436L,56437L,56438L,56439L,56440L,56441L,56442L,56443L,56444L, -56445L,56446L,56447L,56448L,56449L,56450L,56451L,56452L,56453L,56454L, -56455L,56456L,56457L,56458L,56459L,56460L,56461L,56462L,56463L,56464L, -56465L,56466L,56467L,56468L,56469L,56470L,56471L,56472L,56473L,56474L, -56475L,56476L,56477L,56478L,56479L,56480L,56481L,56482L,56483L,56484L, -56485L,56486L,56487L,56488L,56489L,56490L,56491L,56492L,56493L,56494L, -56495L,56496L,56497L,56498L,56499L,56500L,56501L,56502L,56503L,56504L, -56505L,56506L,56507L,56508L,56509L,56510L,56511L,56512L,56513L,56514L, -56515L,56516L,56517L,56518L,56519L,56520L,56521L,56522L,56523L,56524L, -56525L,56526L,56527L,56528L,56529L,56530L,56531L,56532L,56533L,56534L, -56535L,56536L,56537L,56538L,56539L,56540L,56541L,56542L,56543L,56544L, -56545L,56546L,56547L,56548L,56549L,56550L,56551L,56552L,56553L,56554L, -56555L,56556L,56557L,56558L,56559L,56560L,56561L,56562L,56563L,56564L, -56565L,56566L,56567L,56568L,56569L,56570L,56571L,56572L,56573L,56574L, -56575L,56576L,56577L,56578L,56579L,56580L,56581L,56582L,56583L,56584L, -56585L,56586L,56587L,56588L,56589L,56590L,56591L,56592L,56593L,56594L, -56595L,56596L,56597L,56598L,56599L,56600L,56601L,56602L,56603L,56604L, -56605L,56606L,56607L,56608L,56609L,56610L,56611L,56612L,56613L,56614L, -56615L,56616L,56617L,56618L,56619L,56620L,56621L,56622L,56623L,56624L, -56625L,56626L,56627L,56628L,56629L,56630L,56631L,56632L,56633L,56634L, -56635L,56636L,56637L,56638L,56639L,56640L,56641L,56642L,56643L,56644L, -56645L,56646L,56647L,56648L,56649L,56650L,56651L,56652L,56653L,56654L, -56655L,56656L,56657L,56658L,56659L,56660L,56661L,56662L,56663L,56664L, -56665L,56666L,56667L,56668L,56669L,56670L,56671L,56672L,56673L,56674L, -56675L,56676L,56677L,56678L,56679L,56680L,56681L,56682L,56683L,56684L, -56685L,56686L,56687L,56688L,56689L,56690L,56691L,56692L,56693L,56694L, -56695L,56696L,56697L,56698L,56699L,56700L,56701L,56702L,56703L,56704L, -56705L,56706L,56707L,56708L,56709L,56710L,56711L,56712L,56713L,56714L, -56715L,56716L,56717L,56718L,56719L,56720L,56721L,56722L,56723L,56724L, -56725L,56726L,56727L,56728L,56729L,56730L,56731L,56732L,56733L,56734L, -56735L,56736L,56737L,56738L,56739L,56740L,56741L,56742L,56743L,56744L, -56745L,56746L,56747L,56748L,56749L,56750L,56751L,56752L,56753L,56754L, -56755L,56756L,56757L,56758L,56759L,56760L,56761L,56762L,56763L,56764L, -56765L,56766L,56767L,56768L,56769L,56770L,56771L,56772L,56773L,56774L, -56775L,56776L,56777L,56778L,56779L,56780L,56781L,56782L,56783L,56784L, -56785L,56786L,56787L,56788L,56789L,56790L,56791L,56792L,56793L,56794L, -56795L,56796L,56797L,56798L,56799L,56800L,56801L,56802L,56803L,56804L, -56805L,56806L,56807L,56808L,56809L,56810L,56811L,56812L,56813L,56814L, -56815L,56816L,56817L,56818L,56819L,56820L,56821L,56822L,56823L,56824L, -56825L,56826L,56827L,56828L,56829L,56830L,56831L,56832L,56833L,56834L, -56835L,56836L,56837L,56838L,56839L,56840L,56841L,56842L,56843L,56844L, -56845L,56846L,56847L,56848L,56849L,56850L,56851L,56852L,56853L,56854L, -56855L,56856L,56857L,56858L,56859L,56860L,56861L,56862L,56863L,56864L, -56865L,56866L,56867L,56868L,56869L,56870L,56871L,56872L,56873L,56874L, -56875L,56876L,56877L,56878L,56879L,56880L,56881L,56882L,56883L,56884L, -56885L,56886L,56887L,56888L,56889L,56890L,56891L,56892L,56893L,56894L, -56895L,56896L,56897L,56898L,56899L,56900L,56901L,56902L,56903L,56904L, -56905L,56906L,56907L,56908L,56909L,56910L,56911L,56912L,56913L,56914L, -56915L,56916L,56917L,56918L,56919L,56920L,56921L,56922L,56923L,56924L, -56925L,56926L,56927L,56928L,56929L,56930L,56931L,56932L,56933L,56934L, -56935L,56936L,56937L,56938L,56939L,56940L,56941L,56942L,56943L,56944L, -56945L,56946L,56947L,56948L,56949L,56950L,56951L,56952L,56953L,56954L, -56955L,56956L,56957L,56958L,56959L,56960L,56961L,56962L,56963L,56964L, -56965L,56966L,56967L,56968L,56969L,56970L,56971L,56972L,56973L,56974L, -56975L,56976L,56977L,56978L,56979L,56980L,56981L,56982L,56983L,56984L, -56985L,56986L,56987L,56988L,56989L,56990L,56991L,56992L,56993L,56994L, -56995L,56996L,56997L,56998L,56999L,57000L,57001L,57002L,57003L,57004L, -57005L,57006L,57007L,57008L,57009L,57010L,57011L,57012L,57013L,57014L, -57015L,57016L,57017L,57018L,57019L,57020L,57021L,57022L,57023L,57024L, -57025L,57026L,57027L,57028L,57029L,57030L,57031L,57032L,57033L,57034L, -57035L,57036L,57037L,57038L,57039L,57040L,57041L,57042L,57043L,57044L, -57045L,57046L,57047L,57048L,57049L,57050L,57051L,57052L,57053L,57054L, -57055L,57056L,57057L,57058L,57059L,57060L,57061L,57062L,57063L,57064L, -57065L,57066L,57067L,57068L,57069L,57070L,57071L,57072L,57073L,57074L, -57075L,57076L,57077L,57078L,57079L,57080L,57081L,57082L,57083L,57084L, -57085L,57086L,57087L,57088L,57089L,57090L,57091L,57092L,57093L,57094L, -57095L,57096L,57097L,57098L,57099L,57100L,57101L,57102L,57103L,57104L, -57105L,57106L,57107L,57108L,57109L,57110L,57111L,57112L,57113L,57114L, -57115L,57116L,57117L,57118L,57119L,57120L,57121L,57122L,57123L,57124L, -57125L,57126L,57127L,57128L,57129L,57130L,57131L,57132L,57133L,57134L, -57135L,57136L,57137L,57138L,57139L,57140L,57141L,57142L,57143L,57144L, -57145L,57146L,57147L,57148L,57149L,57150L,57151L,57152L,57153L,57154L, -57155L,57156L,57157L,57158L,57159L,57160L,57161L,57162L,57163L,57164L, -57165L,57166L,57167L,57168L,57169L,57170L,57171L,57172L,57173L,57174L, -57175L,57176L,57177L,57178L,57179L,57180L,57181L,57182L,57183L,57184L, -57185L,57186L,57187L,57188L,57189L,57190L,57191L,57192L,57193L,57194L, -57195L,57196L,57197L,57198L,57199L,57200L,57201L,57202L,57203L,57204L, -57205L,57206L,57207L,57208L,57209L,57210L,57211L,57212L,57213L,57214L, -57215L,57216L,57217L,57218L,57219L,57220L,57221L,57222L,57223L,57224L, -57225L,57226L,57227L,57228L,57229L,57230L,57231L,57232L,57233L,57234L, -57235L,57236L,57237L,57238L,57239L,57240L,57241L,57242L,57243L,57244L, -57245L,57246L,57247L,57248L,57249L,57250L,57251L,57252L,57253L,57254L, -57255L,57256L,57257L,57258L,57259L,57260L,57261L,57262L,57263L,57264L, -57265L,57266L,57267L,57268L,57269L,57270L,57271L,57272L,57273L,57274L, -57275L,57276L,57277L,57278L,57279L,57280L,57281L,57282L,57283L,57284L, -57285L,57286L,57287L,57288L,57289L,57290L,57291L,57292L,57293L,57294L, -57295L,57296L,57297L,57298L,57299L,57300L,57301L,57302L,57303L,57304L, -57305L,57306L,57307L,57308L,57309L,57310L,57311L,57312L,57313L,57314L, -57315L,57316L,57317L,57318L,57319L,57320L,57321L,57322L,57323L,57324L, -57325L,57326L,57327L,57328L,57329L,57330L,57331L,57332L,57333L,57334L, -57335L,57336L,57337L,57338L,57339L,57340L,57341L,57342L,57343L,57344L, -57345L,57346L,57347L,57348L,57349L,57350L,57351L,57352L,57353L,57354L, -57355L,57356L,57357L,57358L,57359L,57360L,57361L,57362L,57363L,57364L, -57365L,57366L,57367L,57368L,57369L,57370L,57371L,57372L,57373L,57374L, -57375L,57376L,57377L,57378L,57379L,57380L,57381L,57382L,57383L,57384L, -57385L,57386L,57387L,57388L,57389L,57390L,57391L,57392L,57393L,57394L, -57395L,57396L,57397L,57398L,57399L,57400L,57401L,57402L,57403L,57404L, -57405L,57406L,57407L,57408L,57409L,57410L,57411L,57412L,57413L,57414L, -57415L,57416L,57417L,57418L,57419L,57420L,57421L,57422L,57423L,57424L, -57425L,57426L,57427L,57428L,57429L,57430L,57431L,57432L,57433L,57434L, -57435L,57436L,57437L,57438L,57439L,57440L,57441L,57442L,57443L,57444L, -57445L,57446L,57447L,57448L,57449L,57450L,57451L,57452L,57453L,57454L, -57455L,57456L,57457L,57458L,57459L,57460L,57461L,57462L,57463L,57464L, -57465L,57466L,57467L,57468L,57469L,57470L,57471L,57472L,57473L,57474L, -57475L,57476L,57477L,57478L,57479L,57480L,57481L,57482L,57483L,57484L, -57485L,57486L,57487L,57488L,57489L,57490L,57491L,57492L,57493L,57494L, -57495L,57496L,57497L,57498L,57499L,57500L,57501L,57502L,57503L,57504L, -57505L,57506L,57507L,57508L,57509L,57510L,57511L,57512L,57513L,57514L, -57515L,57516L,57517L,57518L,57519L,57520L,57521L,57522L,57523L,57524L, -57525L,57526L,57527L,57528L,57529L,57530L,57531L,57532L,57533L,57534L, -57535L,57536L,57537L,57538L,57539L,57540L,57541L,57542L,57543L,57544L, -57545L,57546L,57547L,57548L,57549L,57550L,57551L,57552L,57553L,57554L, -57555L,57556L,57557L,57558L,57559L,57560L,57561L,57562L,57563L,57564L, -57565L,57566L,57567L,57568L,57569L,57570L,57571L,57572L,57573L,57574L, -57575L,57576L,57577L,57578L,57579L,57580L,57581L,57582L,57583L,57584L, -57585L,57586L,57587L,57588L,57589L,57590L,57591L,57592L,57593L,57594L, -57595L,57596L,57597L,57598L,57599L,57600L,57601L,57602L,57603L,57604L, -57605L,57606L,57607L,57608L,57609L,57610L,57611L,57612L,57613L,57614L, -57615L,57616L,57617L,57618L,57619L,57620L,57621L,57622L,57623L,57624L, -57625L,57626L,57627L,57628L,57629L,57630L,57631L,57632L,57633L,57634L, -57635L,57636L,57637L,57638L,57639L,57640L,57641L,57642L,57643L,57644L, -57645L,57646L,57647L,57648L,57649L,57650L,57651L,57652L,57653L,57654L, -57655L,57656L,57657L,57658L,57659L,57660L,57661L,57662L,57663L,57664L, -57665L,57666L,57667L,57668L,57669L,57670L,57671L,57672L,57673L,57674L, -57675L,57676L,57677L,57678L,57679L,57680L,57681L,57682L,57683L,57684L, -57685L,57686L,57687L,57688L,57689L,57690L,57691L,57692L,57693L,57694L, -57695L,57696L,57697L,57698L,57699L,57700L,57701L,57702L,57703L,57704L, -57705L,57706L,57707L,57708L,57709L,57710L,57711L,57712L,57713L,57714L, -57715L,57716L,57717L,57718L,57719L,57720L,57721L,57722L,57723L,57724L, -57725L,57726L,57727L,57728L,57729L,57730L,57731L,57732L,57733L,57734L, -57735L,57736L,57737L,57738L,57739L,57740L,57741L,57742L,57743L,57744L, -57745L,57746L,57747L,57748L,57749L,57750L,57751L,57752L,57753L,57754L, -57755L,57756L,57757L,57758L,57759L,57760L,57761L,57762L,57763L,57764L, -57765L,57766L,57767L,57768L,57769L,57770L,57771L,57772L,57773L,57774L, -57775L,57776L,57777L,57778L,57779L,57780L,57781L,57782L,57783L,57784L, -57785L,57786L,57787L,57788L,57789L,57790L,57791L,57792L,57793L,57794L, -57795L,57796L,57797L,57798L,57799L,57800L,57801L,57802L,57803L,57804L, -57805L,57806L,57807L,57808L,57809L,57810L,57811L,57812L,57813L,57814L, -57815L,57816L,57817L,57818L,57819L,57820L,57821L,57822L,57823L,57824L, -57825L,57826L,57827L,57828L,57829L,57830L,57831L,57832L,57833L,57834L, -57835L,57836L,57837L,57838L,57839L,57840L,57841L,57842L,57843L,57844L, -57845L,57846L,57847L,57848L,57849L,57850L,57851L,57852L,57853L,57854L, -57855L,57856L,57857L,57858L,57859L,57860L,57861L,57862L,57863L,57864L, -57865L,57866L,57867L,57868L,57869L,57870L,57871L,57872L,57873L,57874L, -57875L,57876L,57877L,57878L,57879L,57880L,57881L,57882L,57883L,57884L, -57885L,57886L,57887L,57888L,57889L,57890L,57891L,57892L,57893L,57894L, -57895L,57896L,57897L,57898L,57899L,57900L,57901L,57902L,57903L,57904L, -57905L,57906L,57907L,57908L,57909L,57910L,57911L,57912L,57913L,57914L, -57915L,57916L,57917L,57918L,57919L,57920L,57921L,57922L,57923L,57924L, -57925L,57926L,57927L,57928L,57929L,57930L,57931L,57932L,57933L,57934L, -57935L,57936L,57937L,57938L,57939L,57940L,57941L,57942L,57943L,57944L, -57945L,57946L,57947L,57948L,57949L,57950L,57951L,57952L,57953L,57954L, -57955L,57956L,57957L,57958L,57959L,57960L,57961L,57962L,57963L,57964L, -57965L,57966L,57967L,57968L,57969L,57970L,57971L,57972L,57973L,57974L, -57975L,57976L,57977L,57978L,57979L,57980L,57981L,57982L,57983L,57984L, -57985L,57986L,57987L,57988L,57989L,57990L,57991L,57992L,57993L,57994L, -57995L,57996L,57997L,57998L,57999L,58000L,58001L,58002L,58003L,58004L, -58005L,58006L,58007L,58008L,58009L,58010L,58011L,58012L,58013L,58014L, -58015L,58016L,58017L,58018L,58019L,58020L,58021L,58022L,58023L,58024L, -58025L,58026L,58027L,58028L,58029L,58030L,58031L,58032L,58033L,58034L, -58035L,58036L,58037L,58038L,58039L,58040L,58041L,58042L,58043L,58044L, -58045L,58046L,58047L,58048L,58049L,58050L,58051L,58052L,58053L,58054L, -58055L,58056L,58057L,58058L,58059L,58060L,58061L,58062L,58063L,58064L, -58065L,58066L,58067L,58068L,58069L,58070L,58071L,58072L,58073L,58074L, -58075L,58076L,58077L,58078L,58079L,58080L,58081L,58082L,58083L,58084L, -58085L,58086L,58087L,58088L,58089L,58090L,58091L,58092L,58093L,58094L, -58095L,58096L,58097L,58098L,58099L,58100L,58101L,58102L,58103L,58104L, -58105L,58106L,58107L,58108L,58109L,58110L,58111L,58112L,58113L,58114L, -58115L,58116L,58117L,58118L,58119L,58120L,58121L,58122L,58123L,58124L, -58125L,58126L,58127L,58128L,58129L,58130L,58131L,58132L,58133L,58134L, -58135L,58136L,58137L,58138L,58139L,58140L,58141L,58142L,58143L,58144L, -58145L,58146L,58147L,58148L,58149L,58150L,58151L,58152L,58153L,58154L, -58155L,58156L,58157L,58158L,58159L,58160L,58161L,58162L,58163L,58164L, -58165L,58166L,58167L,58168L,58169L,58170L,58171L,58172L,58173L,58174L, -58175L,58176L,58177L,58178L,58179L,58180L,58181L,58182L,58183L,58184L, -58185L,58186L,58187L,58188L,58189L,58190L,58191L,58192L,58193L,58194L, -58195L,58196L,58197L,58198L,58199L,58200L,58201L,58202L,58203L,58204L, -58205L,58206L,58207L,58208L,58209L,58210L,58211L,58212L,58213L,58214L, -58215L,58216L,58217L,58218L,58219L,58220L,58221L,58222L,58223L,58224L, -58225L,58226L,58227L,58228L,58229L,58230L,58231L,58232L,58233L,58234L, -58235L,58236L,58237L,58238L,58239L,58240L,58241L,58242L,58243L,58244L, -58245L,58246L,58247L,58248L,58249L,58250L,58251L,58252L,58253L,58254L, -58255L,58256L,58257L,58258L,58259L,58260L,58261L,58262L,58263L,58264L, -58265L,58266L,58267L,58268L,58269L,58270L,58271L,58272L,58273L,58274L, -58275L,58276L,58277L,58278L,58279L,58280L,58281L,58282L,58283L,58284L, -58285L,58286L,58287L,58288L,58289L,58290L,58291L,58292L,58293L,58294L, -58295L,58296L,58297L,58298L,58299L,58300L,58301L,58302L,58303L,58304L, -58305L,58306L,58307L,58308L,58309L,58310L,58311L,58312L,58313L,58314L, -58315L,58316L,58317L,58318L,58319L,58320L,58321L,58322L,58323L,58324L, -58325L,58326L,58327L,58328L,58329L,58330L,58331L,58332L,58333L,58334L, -58335L,58336L,58337L,58338L,58339L,58340L,58341L,58342L,58343L,58344L, -58345L,58346L,58347L,58348L,58349L,58350L,58351L,58352L,58353L,58354L, -58355L,58356L,58357L,58358L,58359L,58360L,58361L,58362L,58363L,58364L, -58365L,58366L,58367L,58368L,58369L,58370L,58371L,58372L,58373L,58374L, -58375L,58376L,58377L,58378L,58379L,58380L,58381L,58382L,58383L,58384L, -58385L,58386L,58387L,58388L,58389L,58390L,58391L,58392L,58393L,58394L, -58395L,58396L,58397L,58398L,58399L,58400L,58401L,58402L,58403L,58404L, -58405L,58406L,58407L,58408L,58409L,58410L,58411L,58412L,58413L,58414L, -58415L,58416L,58417L,58418L,58419L,58420L,58421L,58422L,58423L,58424L, -58425L,58426L,58427L,58428L,58429L,58430L,58431L,58432L,58433L,58434L, -58435L,58436L,58437L,58438L,58439L,58440L,58441L,58442L,58443L,58444L, -58445L,58446L,58447L,58448L,58449L,58450L,58451L,58452L,58453L,58454L, -58455L,58456L,58457L,58458L,58459L,58460L,58461L,58462L,58463L,58464L, -58465L,58466L,58467L,58468L,58469L,58470L,58471L,58472L,58473L,58474L, -58475L,58476L,58477L,58478L,58479L,58480L,58481L,58482L,58483L,58484L, -58485L,58486L,58487L,58488L,58489L,58490L,58491L,58492L,58493L,58494L, -58495L,58496L,58497L,58498L,58499L,58500L,58501L,58502L,58503L,58504L, -58505L,58506L,58507L,58508L,58509L,58510L,58511L,58512L,58513L,58514L, -58515L,58516L,58517L,58518L,58519L,58520L,58521L,58522L,58523L,58524L, -58525L,58526L,58527L,58528L,58529L,58530L,58531L,58532L,58533L,58534L, -58535L,58536L,58537L,58538L,58539L,58540L,58541L,58542L,58543L,58544L, -58545L,58546L,58547L,58548L,58549L,58550L,58551L,58552L,58553L,58554L, -58555L,58556L,58557L,58558L,58559L,58560L,58561L,58562L,58563L,58564L, -58565L,58566L,58567L,58568L,58569L,58570L,58571L,58572L,58573L,58574L, -58575L,58576L,58577L,58578L,58579L,58580L,58581L,58582L,58583L,58584L, -58585L,58586L,58587L,58588L,58589L,58590L,58591L,58592L,58593L,58594L, -58595L,58596L,58597L,58598L,58599L,58600L,58601L,58602L,58603L,58604L, -58605L,58606L,58607L,58608L,58609L,58610L,58611L,58612L,58613L,58614L, -58615L,58616L,58617L,58618L,58619L,58620L,58621L,58622L,58623L,58624L, -58625L,58626L,58627L,58628L,58629L,58630L,58631L,58632L,58633L,58634L, -58635L,58636L,58637L,58638L,58639L,58640L,58641L,58642L,58643L,58644L, -58645L,58646L,58647L,58648L,58649L,58650L,58651L,58652L,58653L,58654L, -58655L,58656L,58657L,58658L,58659L,58660L,58661L,58662L,58663L,58664L, -58665L,58666L,58667L,58668L,58669L,58670L,58671L,58672L,58673L,58674L, -58675L,58676L,58677L,58678L,58679L,58680L,58681L,58682L,58683L,58684L, -58685L,58686L,58687L,58688L,58689L,58690L,58691L,58692L,58693L,58694L, -58695L,58696L,58697L,58698L,58699L,58700L,58701L,58702L,58703L,58704L, -58705L,58706L,58707L,58708L,58709L,58710L,58711L,58712L,58713L,58714L, -58715L,58716L,58717L,58718L,58719L,58720L,58721L,58722L,58723L,58724L, -58725L,58726L,58727L,58728L,58729L,58730L,58731L,58732L,58733L,58734L, -58735L,58736L,58737L,58738L,58739L,58740L,58741L,58742L,58743L,58744L, -58745L,58746L,58747L,58748L,58749L,58750L,58751L,58752L,58753L,58754L, -58755L,58756L,58757L,58758L,58759L,58760L,58761L,58762L,58763L,58764L, -58765L,58766L,58767L,58768L,58769L,58770L,58771L,58772L,58773L,58774L, -58775L,58776L,58777L,58778L,58779L,58780L,58781L,58782L,58783L,58784L, -58785L,58786L,58787L,58788L,58789L,58790L,58791L,58792L,58793L,58794L, -58795L,58796L,58797L,58798L,58799L,58800L,58801L,58802L,58803L,58804L, -58805L,58806L,58807L,58808L,58809L,58810L,58811L,58812L,58813L,58814L, -58815L,58816L,58817L,58818L,58819L,58820L,58821L,58822L,58823L,58824L, -58825L,58826L,58827L,58828L,58829L,58830L,58831L,58832L,58833L,58834L, -58835L,58836L,58837L,58838L,58839L,58840L,58841L,58842L,58843L,58844L, -58845L,58846L,58847L,58848L,58849L,58850L,58851L,58852L,58853L,58854L, -58855L,58856L,58857L,58858L,58859L,58860L,58861L,58862L,58863L,58864L, -58865L,58866L,58867L,58868L,58869L,58870L,58871L,58872L,58873L,58874L, -58875L,58876L,58877L,58878L,58879L,58880L,58881L,58882L,58883L,58884L, -58885L,58886L,58887L,58888L,58889L,58890L,58891L,58892L,58893L,58894L, -58895L,58896L,58897L,58898L,58899L,58900L,58901L,58902L,58903L,58904L, -58905L,58906L,58907L,58908L,58909L,58910L,58911L,58912L,58913L,58914L, -58915L,58916L,58917L,58918L,58919L,58920L,58921L,58922L,58923L,58924L, -58925L,58926L,58927L,58928L,58929L,58930L,58931L,58932L,58933L,58934L, -58935L,58936L,58937L,58938L,58939L,58940L,58941L,58942L,58943L,58944L, -58945L,58946L,58947L,58948L,58949L,58950L,58951L,58952L,58953L,58954L, -58955L,58956L,58957L,58958L,58959L,58960L,58961L,58962L,58963L,58964L, -58965L,58966L,58967L,58968L,58969L,58970L,58971L,58972L,58973L,58974L, -58975L,58976L,58977L,58978L,58979L,58980L,58981L,58982L,58983L,58984L, -58985L,58986L,58987L,58988L,58989L,58990L,58991L,58992L,58993L,58994L, -58995L,58996L,58997L,58998L,58999L,59000L,59001L,59002L,59003L,59004L, -59005L,59006L,59007L,59008L,59009L,59010L,59011L,59012L,59013L,59014L, -59015L,59016L,59017L,59018L,59019L,59020L,59021L,59022L,59023L,59024L, -59025L,59026L,59027L,59028L,59029L,59030L,59031L,59032L,59033L,59034L, -59035L,59036L,59037L,59038L,59039L,59040L,59041L,59042L,59043L,59044L, -59045L,59046L,59047L,59048L,59049L,59050L,59051L,59052L,59053L,59054L, -59055L,59056L,59057L,59058L,59059L,59060L,59061L,59062L,59063L,59064L, -59065L,59066L,59067L,59068L,59069L,59070L,59071L,59072L,59073L,59074L, -59075L,59076L,59077L,59078L,59079L,59080L,59081L,59082L,59083L,59084L, -59085L,59086L,59087L,59088L,59089L,59090L,59091L,59092L,59093L,59094L, -59095L,59096L,59097L,59098L,59099L,59100L,59101L,59102L,59103L,59104L, -59105L,59106L,59107L,59108L,59109L,59110L,59111L,59112L,59113L,59114L, -59115L,59116L,59117L,59118L,59119L,59120L,59121L,59122L,59123L,59124L, -59125L,59126L,59127L,59128L,59129L,59130L,59131L,59132L,59133L,59134L, -59135L,59136L,59137L,59138L,59139L,59140L,59141L,59142L,59143L,59144L, -59145L,59146L,59147L,59148L,59149L,59150L,59151L,59152L,59153L,59154L, -59155L,59156L,59157L,59158L,59159L,59160L,59161L,59162L,59163L,59164L, -59165L,59166L,59167L,59168L,59169L,59170L,59171L,59172L,59173L,59174L, -59175L,59176L,59177L,59178L,59179L,59180L,59181L,59182L,59183L,59184L, -59185L,59186L,59187L,59188L,59189L,59190L,59191L,59192L,59193L,59194L, -59195L,59196L,59197L,59198L,59199L,59200L,59201L,59202L,59203L,59204L, -59205L,59206L,59207L,59208L,59209L,59210L,59211L,59212L,59213L,59214L, -59215L,59216L,59217L,59218L,59219L,59220L,59221L,59222L,59223L,59224L, -59225L,59226L,59227L,59228L,59229L,59230L,59231L,59232L,59233L,59234L, -59235L,59236L,59237L,59238L,59239L,59240L,59241L,59242L,59243L,59244L, -59245L,59246L,59247L,59248L,59249L,59250L,59251L,59252L,59253L,59254L, -59255L,59256L,59257L,59258L,59259L,59260L,59261L,59262L,59263L,59264L, -59265L,59266L,59267L,59268L,59269L,59270L,59271L,59272L,59273L,59274L, -59275L,59276L,59277L,59278L,59279L,59280L,59281L,59282L,59283L,59284L, -59285L,59286L,59287L,59288L,59289L,59290L,59291L,59292L,59293L,59294L, -59295L,59296L,59297L,59298L,59299L,59300L,59301L,59302L,59303L,59304L, -59305L,59306L,59307L,59308L,59309L,59310L,59311L,59312L,59313L,59314L, -59315L,59316L,59317L,59318L,59319L,59320L,59321L,59322L,59323L,59324L, -59325L,59326L,59327L,59328L,59329L,59330L,59331L,59332L,59333L,59334L, -59335L,59336L,59337L,59338L,59339L,59340L,59341L,59342L,59343L,59344L, -59345L,59346L,59347L,59348L,59349L,59350L,59351L,59352L,59353L,59354L, -59355L,59356L,59357L,59358L,59359L,59360L,59361L,59362L,59363L,59364L, -59365L,59366L,59367L,59368L,59369L,59370L,59371L,59372L,59373L,59374L, -59375L,59376L,59377L,59378L,59379L,59380L,59381L,59382L,59383L,59384L, -59385L,59386L,59387L,59388L,59389L,59390L,59391L,59392L,59393L,59394L, -59395L,59396L,59397L,59398L,59399L,59400L,59401L,59402L,59403L,59404L, -59405L,59406L,59407L,59408L,59409L,59410L,59411L,59412L,59413L,59414L, -59415L,59416L,59417L,59418L,59419L,59420L,59421L,59422L,59423L,59424L, -59425L,59426L,59427L,59428L,59429L,59430L,59431L,59432L,59433L,59434L, -59435L,59436L,59437L,59438L,59439L,59440L,59441L,59442L,59443L,59444L, -59445L,59446L,59447L,59448L,59449L,59450L,59451L,59452L,59453L,59454L, -59455L,59456L,59457L,59458L,59459L,59460L,59461L,59462L,59463L,59464L, -59465L,59466L,59467L,59468L,59469L,59470L,59471L,59472L,59473L,59474L, -59475L,59476L,59477L,59478L,59479L,59480L,59481L,59482L,59483L,59484L, -59485L,59486L,59487L,59488L,59489L,59490L,59491L,59492L,59493L,59494L, -59495L,59496L,59497L,59498L,59499L,59500L,59501L,59502L,59503L,59504L, -59505L,59506L,59507L,59508L,59509L,59510L,59511L,59512L,59513L,59514L, -59515L,59516L,59517L,59518L,59519L,59520L,59521L,59522L,59523L,59524L, -59525L,59526L,59527L,59528L,59529L,59530L,59531L,59532L,59533L,59534L, -59535L,59536L,59537L,59538L,59539L,59540L,59541L,59542L,59543L,59544L, -59545L,59546L,59547L,59548L,59549L,59550L,59551L,59552L,59553L,59554L, -59555L,59556L,59557L,59558L,59559L,59560L,59561L,59562L,59563L,59564L, -59565L,59566L,59567L,59568L,59569L,59570L,59571L,59572L,59573L,59574L, -59575L,59576L,59577L,59578L,59579L,59580L,59581L,59582L,59583L,59584L, -59585L,59586L,59587L,59588L,59589L,59590L,59591L,59592L,59593L,59594L, -59595L,59596L,59597L,59598L,59599L,59600L,59601L,59602L,59603L,59604L, -59605L,59606L,59607L,59608L,59609L,59610L,59611L,59612L,59613L,59614L, -59615L,59616L,59617L,59618L,59619L,59620L,59621L,59622L,59623L,59624L, -59625L,59626L,59627L,59628L,59629L,59630L,59631L,59632L,59633L,59634L, -59635L,59636L,59637L,59638L,59639L,59640L,59641L,59642L,59643L,59644L, -59645L,59646L,59647L,59648L,59649L,59650L,59651L,59652L,59653L,59654L, -59655L,59656L,59657L,59658L,59659L,59660L,59661L,59662L,59663L,59664L, -59665L,59666L,59667L,59668L,59669L,59670L,59671L,59672L,59673L,59674L, -59675L,59676L,59677L,59678L,59679L,59680L,59681L,59682L,59683L,59684L, -59685L,59686L,59687L,59688L,59689L,59690L,59691L,59692L,59693L,59694L, -59695L,59696L,59697L,59698L,59699L,59700L,59701L,59702L,59703L,59704L, -59705L,59706L,59707L,59708L,59709L,59710L,59711L,59712L,59713L,59714L, -59715L,59716L,59717L,59718L,59719L,59720L,59721L,59722L,59723L,59724L, -59725L,59726L,59727L,59728L,59729L,59730L,59731L,59732L,59733L,59734L, -59735L,59736L,59737L,59738L,59739L,59740L,59741L,59742L,59743L,59744L, -59745L,59746L,59747L,59748L,59749L,59750L,59751L,59752L,59753L,59754L, -59755L,59756L,59757L,59758L,59759L,59760L,59761L,59762L,59763L,59764L, -59765L,59766L,59767L,59768L,59769L,59770L,59771L,59772L,59773L,59774L, -59775L,59776L,59777L,59778L,59779L,59780L,59781L,59782L,59783L,59784L, -59785L,59786L,59787L,59788L,59789L,59790L,59791L,59792L,59793L,59794L, -59795L,59796L,59797L,59798L,59799L,59800L,59801L,59802L,59803L,59804L, -59805L,59806L,59807L,59808L,59809L,59810L,59811L,59812L,59813L,59814L, -59815L,59816L,59817L,59818L,59819L,59820L,59821L,59822L,59823L,59824L, -59825L,59826L,59827L,59828L,59829L,59830L,59831L,59832L,59833L,59834L, -59835L,59836L,59837L,59838L,59839L,59840L,59841L,59842L,59843L,59844L, -59845L,59846L,59847L,59848L,59849L,59850L,59851L,59852L,59853L,59854L, -59855L,59856L,59857L,59858L,59859L,59860L,59861L,59862L,59863L,59864L, -59865L,59866L,59867L,59868L,59869L,59870L,59871L,59872L,59873L,59874L, -59875L,59876L,59877L,59878L,59879L,59880L,59881L,59882L,59883L,59884L, -59885L,59886L,59887L,59888L,59889L,59890L,59891L,59892L,59893L,59894L, -59895L,59896L,59897L,59898L,59899L,59900L,59901L,59902L,59903L,59904L, -59905L,59906L,59907L,59908L,59909L,59910L,59911L,59912L,59913L,59914L, -59915L,59916L,59917L,59918L,59919L,59920L,59921L,59922L,59923L,59924L, -59925L,59926L,59927L,59928L,59929L,59930L,59931L,59932L,59933L,59934L, -59935L,59936L,59937L,59938L,59939L,59940L,59941L,59942L,59943L,59944L, -59945L,59946L,59947L,59948L,59949L,59950L,59951L,59952L,59953L,59954L, -59955L,59956L,59957L,59958L,59959L,59960L,59961L,59962L,59963L,59964L, -59965L,59966L,59967L,59968L,59969L,59970L,59971L,59972L,59973L,59974L, -59975L,59976L,59977L,59978L,59979L,59980L,59981L,59982L,59983L,59984L, -59985L,59986L,59987L,59988L,59989L,59990L,59991L,59992L,59993L,59994L, -59995L,59996L,59997L,59998L,59999L,60000L,60001L,60002L,60003L,60004L, -60005L,60006L,60007L,60008L,60009L,60010L,60011L,60012L,60013L,60014L, -60015L,60016L,60017L,60018L,60019L,60020L,60021L,60022L,60023L,60024L, -60025L,60026L,60027L,60028L,60029L,60030L,60031L,60032L,60033L,60034L, -60035L,60036L,60037L,60038L,60039L,60040L,60041L,60042L,60043L,60044L, -60045L,60046L,60047L,60048L,60049L,60050L,60051L,60052L,60053L,60054L, -60055L,60056L,60057L,60058L,60059L,60060L,60061L,60062L,60063L,60064L, -60065L,60066L,60067L,60068L,60069L,60070L,60071L,60072L,60073L,60074L, -60075L,60076L,60077L,60078L,60079L,60080L,60081L,60082L,60083L,60084L, -60085L,60086L,60087L,60088L,60089L,60090L,60091L,60092L,60093L,60094L, -60095L,60096L,60097L,60098L,60099L,60100L,60101L,60102L,60103L,60104L, -60105L,60106L,60107L,60108L,60109L,60110L,60111L,60112L,60113L,60114L, -60115L,60116L,60117L,60118L,60119L,60120L,60121L,60122L,60123L,60124L, -60125L,60126L,60127L,60128L,60129L,60130L,60131L,60132L,60133L,60134L, -60135L,60136L,60137L,60138L,60139L,60140L,60141L,60142L,60143L,60144L, -60145L,60146L,60147L,60148L,60149L,60150L,60151L,60152L,60153L,60154L, -60155L,60156L,60157L,60158L,60159L,60160L,60161L,60162L,60163L,60164L, -60165L,60166L,60167L,60168L,60169L,60170L,60171L,60172L,60173L,60174L, -60175L,60176L,60177L,60178L,60179L,60180L,60181L,60182L,60183L,60184L, -60185L,60186L,60187L,60188L,60189L,60190L,60191L,60192L,60193L,60194L, -60195L,60196L,60197L,60198L,60199L,60200L,60201L,60202L,60203L,60204L, -60205L,60206L,60207L,60208L,60209L,60210L,60211L,60212L,60213L,60214L, -60215L,60216L,60217L,60218L,60219L,60220L,60221L,60222L,60223L,60224L, -60225L,60226L,60227L,60228L,60229L,60230L,60231L,60232L,60233L,60234L, -60235L,60236L,60237L,60238L,60239L,60240L,60241L,60242L,60243L,60244L, -60245L,60246L,60247L,60248L,60249L,60250L,60251L,60252L,60253L,60254L, -60255L,60256L,60257L,60258L,60259L,60260L,60261L,60262L,60263L,60264L, -60265L,60266L,60267L,60268L,60269L,60270L,60271L,60272L,60273L,60274L, -60275L,60276L,60277L,60278L,60279L,60280L,60281L,60282L,60283L,60284L, -60285L,60286L,60287L,60288L,60289L,60290L,60291L,60292L,60293L,60294L, -60295L,60296L,60297L,60298L,60299L,60300L,60301L,60302L,60303L,60304L, -60305L,60306L,60307L,60308L,60309L,60310L,60311L,60312L,60313L,60314L, -60315L,60316L,60317L,60318L,60319L,60320L,60321L,60322L,60323L,60324L, -60325L,60326L,60327L,60328L,60329L,60330L,60331L,60332L,60333L,60334L, -60335L,60336L,60337L,60338L,60339L,60340L,60341L,60342L,60343L,60344L, -60345L,60346L,60347L,60348L,60349L,60350L,60351L,60352L,60353L,60354L, -60355L,60356L,60357L,60358L,60359L,60360L,60361L,60362L,60363L,60364L, -60365L,60366L,60367L,60368L,60369L,60370L,60371L,60372L,60373L,60374L, -60375L,60376L,60377L,60378L,60379L,60380L,60381L,60382L,60383L,60384L, -60385L,60386L,60387L,60388L,60389L,60390L,60391L,60392L,60393L,60394L, -60395L,60396L,60397L,60398L,60399L,60400L,60401L,60402L,60403L,60404L, -60405L,60406L,60407L,60408L,60409L,60410L,60411L,60412L,60413L,60414L, -60415L,60416L,60417L,60418L,60419L,60420L,60421L,60422L,60423L,60424L, -60425L,60426L,60427L,60428L,60429L,60430L,60431L,60432L,60433L,60434L, -60435L,60436L,60437L,60438L,60439L,60440L,60441L,60442L,60443L,60444L, -60445L,60446L,60447L,60448L,60449L,60450L,60451L,60452L,60453L,60454L, -60455L,60456L,60457L,60458L,60459L,60460L,60461L,60462L,60463L,60464L, -60465L,60466L,60467L,60468L,60469L,60470L,60471L,60472L,60473L,60474L, -60475L,60476L,60477L,60478L,60479L,60480L,60481L,60482L,60483L,60484L, -60485L,60486L,60487L,60488L,60489L,60490L,60491L,60492L,60493L,60494L, -60495L,60496L,60497L,60498L,60499L,60500L,60501L,60502L,60503L,60504L, -60505L,60506L,60507L,60508L,60509L,60510L,60511L,60512L,60513L,60514L, -60515L,60516L,60517L,60518L,60519L,60520L,60521L,60522L,60523L,60524L, -60525L,60526L,60527L,60528L,60529L,60530L,60531L,60532L,60533L,60534L, -60535L,60536L,60537L,60538L,60539L,60540L,60541L,60542L,60543L,60544L, -60545L,60546L,60547L,60548L,60549L,60550L,60551L,60552L,60553L,60554L, -60555L,60556L,60557L,60558L,60559L,60560L,60561L,60562L,60563L,60564L, -60565L,60566L,60567L,60568L,60569L,60570L,60571L,60572L,60573L,60574L, -60575L,60576L,60577L,60578L,60579L,60580L,60581L,60582L,60583L,60584L, -60585L,60586L,60587L,60588L,60589L,60590L,60591L,60592L,60593L,60594L, -60595L,60596L,60597L,60598L,60599L,60600L,60601L,60602L,60603L,60604L, -60605L,60606L,60607L,60608L,60609L,60610L,60611L,60612L,60613L,60614L, -60615L,60616L,60617L,60618L,60619L,60620L,60621L,60622L,60623L,60624L, -60625L,60626L,60627L,60628L,60629L,60630L,60631L,60632L,60633L,60634L, -60635L,60636L,60637L,60638L,60639L,60640L,60641L,60642L,60643L,60644L, -60645L,60646L,60647L,60648L,60649L,60650L,60651L,60652L,60653L,60654L, -60655L,60656L,60657L,60658L,60659L,60660L,60661L,60662L,60663L,60664L, -60665L,60666L,60667L,60668L,60669L,60670L,60671L,60672L,60673L,60674L, -60675L,60676L,60677L,60678L,60679L,60680L,60681L,60682L,60683L,60684L, -60685L,60686L,60687L,60688L,60689L,60690L,60691L,60692L,60693L,60694L, -60695L,60696L,60697L,60698L,60699L,60700L,60701L,60702L,60703L,60704L, -60705L,60706L,60707L,60708L,60709L,60710L,60711L,60712L,60713L,60714L, -60715L,60716L,60717L,60718L,60719L,60720L,60721L,60722L,60723L,60724L, -60725L,60726L,60727L,60728L,60729L,60730L,60731L,60732L,60733L,60734L, -60735L,60736L,60737L,60738L,60739L,60740L,60741L,60742L,60743L,60744L, -60745L,60746L,60747L,60748L,60749L,60750L,60751L,60752L,60753L,60754L, -60755L,60756L,60757L,60758L,60759L,60760L,60761L,60762L,60763L,60764L, -60765L,60766L,60767L,60768L,60769L,60770L,60771L,60772L,60773L,60774L, -60775L,60776L,60777L,60778L,60779L,60780L,60781L,60782L,60783L,60784L, -60785L,60786L,60787L,60788L,60789L,60790L,60791L,60792L,60793L,60794L, -60795L,60796L,60797L,60798L,60799L,60800L,60801L,60802L,60803L,60804L, -60805L,60806L,60807L,60808L,60809L,60810L,60811L,60812L,60813L,60814L, -60815L,60816L,60817L,60818L,60819L,60820L,60821L,60822L,60823L,60824L, -60825L,60826L,60827L,60828L,60829L,60830L,60831L,60832L,60833L,60834L, -60835L,60836L,60837L,60838L,60839L,60840L,60841L,60842L,60843L,60844L, -60845L,60846L,60847L,60848L,60849L,60850L,60851L,60852L,60853L,60854L, -60855L,60856L,60857L,60858L,60859L,60860L,60861L,60862L,60863L,60864L, -60865L,60866L,60867L,60868L,60869L,60870L,60871L,60872L,60873L,60874L, -60875L,60876L,60877L,60878L,60879L,60880L,60881L,60882L,60883L,60884L, -60885L,60886L,60887L,60888L,60889L,60890L,60891L,60892L,60893L,60894L, -60895L,60896L,60897L,60898L,60899L,60900L,60901L,60902L,60903L,60904L, -60905L,60906L,60907L,60908L,60909L,60910L,60911L,60912L,60913L,60914L, -60915L,60916L,60917L,60918L,60919L,60920L,60921L,60922L,60923L,60924L, -60925L,60926L,60927L,60928L,60929L,60930L,60931L,60932L,60933L,60934L, -60935L,60936L,60937L,60938L,60939L,60940L,60941L,60942L,60943L,60944L, -60945L,60946L,60947L,60948L,60949L,60950L,60951L,60952L,60953L,60954L, -60955L,60956L,60957L,60958L,60959L,60960L,60961L,60962L,60963L,60964L, -60965L,60966L,60967L,60968L,60969L,60970L,60971L,60972L,60973L,60974L, -60975L,60976L,60977L,60978L,60979L,60980L,60981L,60982L,60983L,60984L, -60985L,60986L,60987L,60988L,60989L,60990L,60991L,60992L,60993L,60994L, -60995L,60996L,60997L,60998L,60999L,61000L,61001L,61002L,61003L,61004L, -61005L,61006L,61007L,61008L,61009L,61010L,61011L,61012L,61013L,61014L, -61015L,61016L,61017L,61018L,61019L,61020L,61021L,61022L,61023L,61024L, -61025L,61026L,61027L,61028L,61029L,61030L,61031L,61032L,61033L,61034L, -61035L,61036L,61037L,61038L,61039L,61040L,61041L,61042L,61043L,61044L, -61045L,61046L,61047L,61048L,61049L,61050L,61051L,61052L,61053L,61054L, -61055L,61056L,61057L,61058L,61059L,61060L,61061L,61062L,61063L,61064L, -61065L,61066L,61067L,61068L,61069L,61070L,61071L,61072L,61073L,61074L, -61075L,61076L,61077L,61078L,61079L,61080L,61081L,61082L,61083L,61084L, -61085L,61086L,61087L,61088L,61089L,61090L,61091L,61092L,61093L,61094L, -61095L,61096L,61097L,61098L,61099L,61100L,61101L,61102L,61103L,61104L, -61105L,61106L,61107L,61108L,61109L,61110L,61111L,61112L,61113L,61114L, -61115L,61116L,61117L,61118L,61119L,61120L,61121L,61122L,61123L,61124L, -61125L,61126L,61127L,61128L,61129L,61130L,61131L,61132L,61133L,61134L, -61135L,61136L,61137L,61138L,61139L,61140L,61141L,61142L,61143L,61144L, -61145L,61146L,61147L,61148L,61149L,61150L,61151L,61152L,61153L,61154L, -61155L,61156L,61157L,61158L,61159L,61160L,61161L,61162L,61163L,61164L, -61165L,61166L,61167L,61168L,61169L,61170L,61171L,61172L,61173L,61174L, -61175L,61176L,61177L,61178L,61179L,61180L,61181L,61182L,61183L,61184L, -61185L,61186L,61187L,61188L,61189L,61190L,61191L,61192L,61193L,61194L, -61195L,61196L,61197L,61198L,61199L,61200L,61201L,61202L,61203L,61204L, -61205L,61206L,61207L,61208L,61209L,61210L,61211L,61212L,61213L,61214L, -61215L,61216L,61217L,61218L,61219L,61220L,61221L,61222L,61223L,61224L, -61225L,61226L,61227L,61228L,61229L,61230L,61231L,61232L,61233L,61234L, -61235L,61236L,61237L,61238L,61239L,61240L,61241L,61242L,61243L,61244L, -61245L,61246L,61247L,61248L,61249L,61250L,61251L,61252L,61253L,61254L, -61255L,61256L,61257L,61258L,61259L,61260L,61261L,61262L,61263L,61264L, -61265L,61266L,61267L,61268L,61269L,61270L,61271L,61272L,61273L,61274L, -61275L,61276L,61277L,61278L,61279L,61280L,61281L,61282L,61283L,61284L, -61285L,61286L,61287L,61288L,61289L,61290L,61291L,61292L,61293L,61294L, -61295L,61296L,61297L,61298L,61299L,61300L,61301L,61302L,61303L,61304L, -61305L,61306L,61307L,61308L,61309L,61310L,61311L,61312L,61313L,61314L, -61315L,61316L,61317L,61318L,61319L,61320L,61321L,61322L,61323L,61324L, -61325L,61326L,61327L,61328L,61329L,61330L,61331L,61332L,61333L,61334L, -61335L,61336L,61337L,61338L,61339L,61340L,61341L,61342L,61343L,61344L, -61345L,61346L,61347L,61348L,61349L,61350L,61351L,61352L,61353L,61354L, -61355L,61356L,61357L,61358L,61359L,61360L,61361L,61362L,61363L,61364L, -61365L,61366L,61367L,61368L,61369L,61370L,61371L,61372L,61373L,61374L, -61375L,61376L,61377L,61378L,61379L,61380L,61381L,61382L,61383L,61384L, -61385L,61386L,61387L,61388L,61389L,61390L,61391L,61392L,61393L,61394L, -61395L,61396L,61397L,61398L,61399L,61400L,61401L,61402L,61403L,61404L, -61405L,61406L,61407L,61408L,61409L,61410L,61411L,61412L,61413L,61414L, -61415L,61416L,61417L,61418L,61419L,61420L,61421L,61422L,61423L,61424L, -61425L,61426L,61427L,61428L,61429L,61430L,61431L,61432L,61433L,61434L, -61435L,61436L,61437L,61438L,61439L,61440L,61441L,61442L,61443L,61444L, -61445L,61446L,61447L,61448L,61449L,61450L,61451L,61452L,61453L,61454L, -61455L,61456L,61457L,61458L,61459L,61460L,61461L,61462L,61463L,61464L, -61465L,61466L,61467L,61468L,61469L,61470L,61471L,61472L,61473L,61474L, -61475L,61476L,61477L,61478L,61479L,61480L,61481L,61482L,61483L,61484L, -61485L,61486L,61487L,61488L,61489L,61490L,61491L,61492L,61493L,61494L, -61495L,61496L,61497L,61498L,61499L,61500L,61501L,61502L,61503L,61504L, -61505L,61506L,61507L,61508L,61509L,61510L,61511L,61512L,61513L,61514L, -61515L,61516L,61517L,61518L,61519L,61520L,61521L,61522L,61523L,61524L, -61525L,61526L,61527L,61528L,61529L,61530L,61531L,61532L,61533L,61534L, -61535L,61536L,61537L,61538L,61539L,61540L,61541L,61542L,61543L,61544L, -61545L,61546L,61547L,61548L,61549L,61550L,61551L,61552L,61553L,61554L, -61555L,61556L,61557L,61558L,61559L,61560L,61561L,61562L,61563L,61564L, -61565L,61566L,61567L,61568L,61569L,61570L,61571L,61572L,61573L,61574L, -61575L,61576L,61577L,61578L,61579L,61580L,61581L,61582L,61583L,61584L, -61585L,61586L,61587L,61588L,61589L,61590L,61591L,61592L,61593L,61594L, -61595L,61596L,61597L,61598L,61599L,61600L,61601L,61602L,61603L,61604L, -61605L,61606L,61607L,61608L,61609L,61610L,61611L,61612L,61613L,61614L, -61615L,61616L,61617L,61618L,61619L,61620L,61621L,61622L,61623L,61624L, -61625L,61626L,61627L,61628L,61629L,61630L,61631L,61632L,61633L,61634L, -61635L,61636L,61637L,61638L,61639L,61640L,61641L,61642L,61643L,61644L, -61645L,61646L,61647L,61648L,61649L,61650L,61651L,61652L,61653L,61654L, -61655L,61656L,61657L,61658L,61659L,61660L,61661L,61662L,61663L,61664L, -61665L,61666L,61667L,61668L,61669L,61670L,61671L,61672L,61673L,61674L, -61675L,61676L,61677L,61678L,61679L,61680L,61681L,61682L,61683L,61684L, -61685L,61686L,61687L,61688L,61689L,61690L,61691L,61692L,61693L,61694L, -61695L,61696L,61697L,61698L,61699L,61700L,61701L,61702L,61703L,61704L, -61705L,61706L,61707L,61708L,61709L,61710L,61711L,61712L,61713L,61714L, -61715L,61716L,61717L,61718L,61719L,61720L,61721L,61722L,61723L,61724L, -61725L,61726L,61727L,61728L,61729L,61730L,61731L,61732L,61733L,61734L, -61735L,61736L,61737L,61738L,61739L,61740L,61741L,61742L,61743L,61744L, -61745L,61746L,61747L,61748L,61749L,61750L,61751L,61752L,61753L,61754L, -61755L,61756L,61757L,61758L,61759L,61760L,61761L,61762L,61763L,61764L, -61765L,61766L,61767L,61768L,61769L,61770L,61771L,61772L,61773L,61774L, -61775L,61776L,61777L,61778L,61779L,61780L,61781L,61782L,61783L,61784L, -61785L,61786L,61787L,61788L,61789L,61790L,61791L,61792L,61793L,61794L, -61795L,61796L,61797L,61798L,61799L,61800L,61801L,61802L,61803L,61804L, -61805L,61806L,61807L,61808L,61809L,61810L,61811L,61812L,61813L,61814L, -61815L,61816L,61817L,61818L,61819L,61820L,61821L,61822L,61823L,61824L, -61825L,61826L,61827L,61828L,61829L,61830L,61831L,61832L,61833L,61834L, -61835L,61836L,61837L,61838L,61839L,61840L,61841L,61842L,61843L,61844L, -61845L,61846L,61847L,61848L,61849L,61850L,61851L,61852L,61853L,61854L, -61855L,61856L,61857L,61858L,61859L,61860L,61861L,61862L,61863L,61864L, -61865L,61866L,61867L,61868L,61869L,61870L,61871L,61872L,61873L,61874L, -61875L,61876L,61877L,61878L,61879L,61880L,61881L,61882L,61883L,61884L, -61885L,61886L,61887L,61888L,61889L,61890L,61891L,61892L,61893L,61894L, -61895L,61896L,61897L,61898L,61899L,61900L,61901L,61902L,61903L,61904L, -61905L,61906L,61907L,61908L,61909L,61910L,61911L,61912L,61913L,61914L, -61915L,61916L,61917L,61918L,61919L,61920L,61921L,61922L,61923L,61924L, -61925L,61926L,61927L,61928L,61929L,61930L,61931L,61932L,61933L,61934L, -61935L,61936L,61937L,61938L,61939L,61940L,61941L,61942L,61943L,61944L, -61945L,61946L,61947L,61948L,61949L,61950L,61951L,61952L,61953L,61954L, -61955L,61956L,61957L,61958L,61959L,61960L,61961L,61962L,61963L,61964L, -61965L,61966L,61967L,61968L,61969L,61970L,61971L,61972L,61973L,61974L, -61975L,61976L,61977L,61978L,61979L,61980L,61981L,61982L,61983L,61984L, -61985L,61986L,61987L,61988L,61989L,61990L,61991L,61992L,61993L,61994L, -61995L,61996L,61997L,61998L,61999L,62000L,62001L,62002L,62003L,62004L, -62005L,62006L,62007L,62008L,62009L,62010L,62011L,62012L,62013L,62014L, -62015L,62016L,62017L,62018L,62019L,62020L,62021L,62022L,62023L,62024L, -62025L,62026L,62027L,62028L,62029L,62030L,62031L,62032L,62033L,62034L, -62035L,62036L,62037L,62038L,62039L,62040L,62041L,62042L,62043L,62044L, -62045L,62046L,62047L,62048L,62049L,62050L,62051L,62052L,62053L,62054L, -62055L,62056L,62057L,62058L,62059L,62060L,62061L,62062L,62063L,62064L, -62065L,62066L,62067L,62068L,62069L,62070L,62071L,62072L,62073L,62074L, -62075L,62076L,62077L,62078L,62079L,62080L,62081L,62082L,62083L,62084L, -62085L,62086L,62087L,62088L,62089L,62090L,62091L,62092L,62093L,62094L, -62095L,62096L,62097L,62098L,62099L,62100L,62101L,62102L,62103L,62104L, -62105L,62106L,62107L,62108L,62109L,62110L,62111L,62112L,62113L,62114L, -62115L,62116L,62117L,62118L,62119L,62120L,62121L,62122L,62123L,62124L, -62125L,62126L,62127L,62128L,62129L,62130L,62131L,62132L,62133L,62134L, -62135L,62136L,62137L,62138L,62139L,62140L,62141L,62142L,62143L,62144L, -62145L,62146L,62147L,62148L,62149L,62150L,62151L,62152L,62153L,62154L, -62155L,62156L,62157L,62158L,62159L,62160L,62161L,62162L,62163L,62164L, -62165L,62166L,62167L,62168L,62169L,62170L,62171L,62172L,62173L,62174L, -62175L,62176L,62177L,62178L,62179L,62180L,62181L,62182L,62183L,62184L, -62185L,62186L,62187L,62188L,62189L,62190L,62191L,62192L,62193L,62194L, -62195L,62196L,62197L,62198L,62199L,62200L,62201L,62202L,62203L,62204L, -62205L,62206L,62207L,62208L,62209L,62210L,62211L,62212L,62213L,62214L, -62215L,62216L,62217L,62218L,62219L,62220L,62221L,62222L,62223L,62224L, -62225L,62226L,62227L,62228L,62229L,62230L,62231L,62232L,62233L,62234L, -62235L,62236L,62237L,62238L,62239L,62240L,62241L,62242L,62243L,62244L, -62245L,62246L,62247L,62248L,62249L,62250L,62251L,62252L,62253L,62254L, -62255L,62256L,62257L,62258L,62259L,62260L,62261L,62262L,62263L,62264L, -62265L,62266L,62267L,62268L,62269L,62270L,62271L,62272L,62273L,62274L, -62275L,62276L,62277L,62278L,62279L,62280L,62281L,62282L,62283L,62284L, -62285L,62286L,62287L,62288L,62289L,62290L,62291L,62292L,62293L,62294L, -62295L,62296L,62297L,62298L,62299L,62300L,62301L,62302L,62303L,62304L, -62305L,62306L,62307L,62308L,62309L,62310L,62311L,62312L,62313L,62314L, -62315L,62316L,62317L,62318L,62319L,62320L,62321L,62322L,62323L,62324L, -62325L,62326L,62327L,62328L,62329L,62330L,62331L,62332L,62333L,62334L, -62335L,62336L,62337L,62338L,62339L,62340L,62341L,62342L,62343L,62344L, -62345L,62346L,62347L,62348L,62349L,62350L,62351L,62352L,62353L,62354L, -62355L,62356L,62357L,62358L,62359L,62360L,62361L,62362L,62363L,62364L, -62365L,62366L,62367L,62368L,62369L,62370L,62371L,62372L,62373L,62374L, -62375L,62376L,62377L,62378L,62379L,62380L,62381L,62382L,62383L,62384L, -62385L,62386L,62387L,62388L,62389L,62390L,62391L,62392L,62393L,62394L, -62395L,62396L,62397L,62398L,62399L,62400L,62401L,62402L,62403L,62404L, -62405L,62406L,62407L,62408L,62409L,62410L,62411L,62412L,62413L,62414L, -62415L,62416L,62417L,62418L,62419L,62420L,62421L,62422L,62423L,62424L, -62425L,62426L,62427L,62428L,62429L,62430L,62431L,62432L,62433L,62434L, -62435L,62436L,62437L,62438L,62439L,62440L,62441L,62442L,62443L,62444L, -62445L,62446L,62447L,62448L,62449L,62450L,62451L,62452L,62453L,62454L, -62455L,62456L,62457L,62458L,62459L,62460L,62461L,62462L,62463L,62464L, -62465L,62466L,62467L,62468L,62469L,62470L,62471L,62472L,62473L,62474L, -62475L,62476L,62477L,62478L,62479L,62480L,62481L,62482L,62483L,62484L, -62485L,62486L,62487L,62488L,62489L,62490L,62491L,62492L,62493L,62494L, -62495L,62496L,62497L,62498L,62499L,62500L,62501L,62502L,62503L,62504L, -62505L,62506L,62507L,62508L,62509L,62510L,62511L,62512L,62513L,62514L, -62515L,62516L,62517L,62518L,62519L,62520L,62521L,62522L,62523L,62524L, -62525L,62526L,62527L,62528L,62529L,62530L,62531L,62532L,62533L,62534L, -62535L,62536L,62537L,62538L,62539L,62540L,62541L,62542L,62543L,62544L, -62545L,62546L,62547L,62548L,62549L,62550L,62551L,62552L,62553L,62554L, -62555L,62556L,62557L,62558L,62559L,62560L,62561L,62562L,62563L,62564L, -62565L,62566L,62567L,62568L,62569L,62570L,62571L,62572L,62573L,62574L, -62575L,62576L,62577L,62578L,62579L,62580L,62581L,62582L,62583L,62584L, -62585L,62586L,62587L,62588L,62589L,62590L,62591L,62592L,62593L,62594L, -62595L,62596L,62597L,62598L,62599L,62600L,62601L,62602L,62603L,62604L, -62605L,62606L,62607L,62608L,62609L,62610L,62611L,62612L,62613L,62614L, -62615L,62616L,62617L,62618L,62619L,62620L,62621L,62622L,62623L,62624L, -62625L,62626L,62627L,62628L,62629L,62630L,62631L,62632L,62633L,62634L, -62635L,62636L,62637L,62638L,62639L,62640L,62641L,62642L,62643L,62644L, -62645L,62646L,62647L,62648L,62649L,62650L,62651L,62652L,62653L,62654L, -62655L,62656L,62657L,62658L,62659L,62660L,62661L,62662L,62663L,62664L, -62665L,62666L,62667L,62668L,62669L,62670L,62671L,62672L,62673L,62674L, -62675L,62676L,62677L,62678L,62679L,62680L,62681L,62682L,62683L,62684L, -62685L,62686L,62687L,62688L,62689L,62690L,62691L,62692L,62693L,62694L, -62695L,62696L,62697L,62698L,62699L,62700L,62701L,62702L,62703L,62704L, -62705L,62706L,62707L,62708L,62709L,62710L,62711L,62712L,62713L,62714L, -62715L,62716L,62717L,62718L,62719L,62720L,62721L,62722L,62723L,62724L, -62725L,62726L,62727L,62728L,62729L,62730L,62731L,62732L,62733L,62734L, -62735L,62736L,62737L,62738L,62739L,62740L,62741L,62742L,62743L,62744L, -62745L,62746L,62747L,62748L,62749L,62750L,62751L,62752L,62753L,62754L, -62755L,62756L,62757L,62758L,62759L,62760L,62761L,62762L,62763L,62764L, -62765L,62766L,62767L,62768L,62769L,62770L,62771L,62772L,62773L,62774L, -62775L,62776L,62777L,62778L,62779L,62780L,62781L,62782L,62783L,62784L, -62785L,62786L,62787L,62788L,62789L,62790L,62791L,62792L,62793L,62794L, -62795L,62796L,62797L,62798L,62799L,62800L,62801L,62802L,62803L,62804L, -62805L,62806L,62807L,62808L,62809L,62810L,62811L,62812L,62813L,62814L, -62815L,62816L,62817L,62818L,62819L,62820L,62821L,62822L,62823L,62824L, -62825L,62826L,62827L,62828L,62829L,62830L,62831L,62832L,62833L,62834L, -62835L,62836L,62837L,62838L,62839L,62840L,62841L,62842L,62843L,62844L, -62845L,62846L,62847L,62848L,62849L,62850L,62851L,62852L,62853L,62854L, -62855L,62856L,62857L,62858L,62859L,62860L,62861L,62862L,62863L,62864L, -62865L,62866L,62867L,62868L,62869L,62870L,62871L,62872L,62873L,62874L, -62875L,62876L,62877L,62878L,62879L,62880L,62881L,62882L,62883L,62884L, -62885L,62886L,62887L,62888L,62889L,62890L,62891L,62892L,62893L,62894L, -62895L,62896L,62897L,62898L,62899L,62900L,62901L,62902L,62903L,62904L, -62905L,62906L,62907L,62908L,62909L,62910L,62911L,62912L,62913L,62914L, -62915L,62916L,62917L,62918L,62919L,62920L,62921L,62922L,62923L,62924L, -62925L,62926L,62927L,62928L,62929L,62930L,62931L,62932L,62933L,62934L, -62935L,62936L,62937L,62938L,62939L,62940L,62941L,62942L,62943L,62944L, -62945L,62946L,62947L,62948L,62949L,62950L,62951L,62952L,62953L,62954L, -62955L,62956L,62957L,62958L,62959L,62960L,62961L,62962L,62963L,62964L, -62965L,62966L,62967L,62968L,62969L,62970L,62971L,62972L,62973L,62974L, -62975L,62976L,62977L,62978L,62979L,62980L,62981L,62982L,62983L,62984L, -62985L,62986L,62987L,62988L,62989L,62990L,62991L,62992L,62993L,62994L, -62995L,62996L,62997L,62998L,62999L,63000L,63001L,63002L,63003L,63004L, -63005L,63006L,63007L,63008L,63009L,63010L,63011L,63012L,63013L,63014L, -63015L,63016L,63017L,63018L,63019L,63020L,63021L,63022L,63023L,63024L, -63025L,63026L,63027L,63028L,63029L,63030L,63031L,63032L,63033L,63034L, -63035L,63036L,63037L,63038L,63039L,63040L,63041L,63042L,63043L,63044L, -63045L,63046L,63047L,63048L,63049L,63050L,63051L,63052L,63053L,63054L, -63055L,63056L,63057L,63058L,63059L,63060L,63061L,63062L,63063L,63064L, -63065L,63066L,63067L,63068L,63069L,63070L,63071L,63072L,63073L,63074L, -63075L,63076L,63077L,63078L,63079L,63080L,63081L,63082L,63083L,63084L, -63085L,63086L,63087L,63088L,63089L,63090L,63091L,63092L,63093L,63094L, -63095L,63096L,63097L,63098L,63099L,63100L,63101L,63102L,63103L,63104L, -63105L,63106L,63107L,63108L,63109L,63110L,63111L,63112L,63113L,63114L, -63115L,63116L,63117L,63118L,63119L,63120L,63121L,63122L,63123L,63124L, -63125L,63126L,63127L,63128L,63129L,63130L,63131L,63132L,63133L,63134L, -63135L,63136L,63137L,63138L,63139L,63140L,63141L,63142L,63143L,63144L, -63145L,63146L,63147L,63148L,63149L,63150L,63151L,63152L,63153L,63154L, -63155L,63156L,63157L,63158L,63159L,63160L,63161L,63162L,63163L,63164L, -63165L,63166L,63167L,63168L,63169L,63170L,63171L,63172L,63173L,63174L, -63175L,63176L,63177L,63178L,63179L,63180L,63181L,63182L,63183L,63184L, -63185L,63186L,63187L,63188L,63189L,63190L,63191L,63192L,63193L,63194L, -63195L,63196L,63197L,63198L,63199L,63200L,63201L,63202L,63203L,63204L, -63205L,63206L,63207L,63208L,63209L,63210L,63211L,63212L,63213L,63214L, -63215L,63216L,63217L,63218L,63219L,63220L,63221L,63222L,63223L,63224L, -63225L,63226L,63227L,63228L,63229L,63230L,63231L,63232L,63233L,63234L, -63235L,63236L,63237L,63238L,63239L,63240L,63241L,63242L,63243L,63244L, -63245L,63246L,63247L,63248L,63249L,63250L,63251L,63252L,63253L,63254L, -63255L,63256L,63257L,63258L,63259L,63260L,63261L,63262L,63263L,63264L, -63265L,63266L,63267L,63268L,63269L,63270L,63271L,63272L,63273L,63274L, -63275L,63276L,63277L,63278L,63279L,63280L,63281L,63282L,63283L,63284L, -63285L,63286L,63287L,63288L,63289L,63290L,63291L,63292L,63293L,63294L, -63295L,63296L,63297L,63298L,63299L,63300L,63301L,63302L,63303L,63304L, -63305L,63306L,63307L,63308L,63309L,63310L,63311L,63312L,63313L,63314L, -63315L,63316L,63317L,63318L,63319L,63320L,63321L,63322L,63323L,63324L, -63325L,63326L,63327L,63328L,63329L,63330L,63331L,63332L,63333L,63334L, -63335L,63336L,63337L,63338L,63339L,63340L,63341L,63342L,63343L,63344L, -63345L,63346L,63347L,63348L,63349L,63350L,63351L,63352L,63353L,63354L, -63355L,63356L,63357L,63358L,63359L,63360L,63361L,63362L,63363L,63364L, -63365L,63366L,63367L,63368L,63369L,63370L,63371L,63372L,63373L,63374L, -63375L,63376L,63377L,63378L,63379L,63380L,63381L,63382L,63383L,63384L, -63385L,63386L,63387L,63388L,63389L,63390L,63391L,63392L,63393L,63394L, -63395L,63396L,63397L,63398L,63399L,63400L,63401L,63402L,63403L,63404L, -63405L,63406L,63407L,63408L,63409L,63410L,63411L,63412L,63413L,63414L, -63415L,63416L,63417L,63418L,63419L,63420L,63421L,63422L,63423L,63424L, -63425L,63426L,63427L,63428L,63429L,63430L,63431L,63432L,63433L,63434L, -63435L,63436L,63437L,63438L,63439L,63440L,63441L,63442L,63443L,63444L, -63445L,63446L,63447L,63448L,63449L,63450L,63451L,63452L,63453L,63454L, -63455L,63456L,63457L,63458L,63459L,63460L,63461L,63462L,63463L,63464L, -63465L,63466L,63467L,63468L,63469L,63470L,63471L,63472L,63473L,63474L, -63475L,63476L,63477L,63478L,63479L,63480L,63481L,63482L,63483L,63484L, -63485L,63486L,63487L,63488L,63489L,63490L,63491L,63492L,63493L,63494L, -63495L,63496L,63497L,63498L,63499L,63500L,63501L,63502L,63503L,63504L, -63505L,63506L,63507L,63508L,63509L,63510L,63511L,63512L,63513L,63514L, -63515L,63516L,63517L,63518L,63519L,63520L,63521L,63522L,63523L,63524L, -63525L,63526L,63527L,63528L,63529L,63530L,63531L,63532L,63533L,63534L, -63535L,63536L,63537L,63538L,63539L,63540L,63541L,63542L,63543L,63544L, -63545L,63546L,63547L,63548L,63549L,63550L,63551L,63552L,63553L,63554L, -63555L,63556L,63557L,63558L,63559L,63560L,63561L,63562L,63563L,63564L, -63565L,63566L,63567L,63568L,63569L,63570L,63571L,63572L,63573L,63574L, -63575L,63576L,63577L,63578L,63579L,63580L,63581L,63582L,63583L,63584L, -63585L,63586L,63587L,63588L,63589L,63590L,63591L,63592L,63593L,63594L, -63595L,63596L,63597L,63598L,63599L,63600L,63601L,63602L,63603L,63604L, -63605L,63606L,63607L,63608L,63609L,63610L,63611L,63612L,63613L,63614L, -63615L,63616L,63617L,63618L,63619L,63620L,63621L,63622L,63623L,63624L, -63625L,63626L,63627L,63628L,63629L,63630L,63631L,63632L,63633L,63634L, -63635L,63636L,63637L,63638L,63639L,63640L,63641L,63642L,63643L,63644L, -63645L,63646L,63647L,63648L,63649L,63650L,63651L,63652L,63653L,63654L, -63655L,63656L,63657L,63658L,63659L,63660L,63661L,63662L,63663L,63664L, -63665L,63666L,63667L,63668L,63669L,63670L,63671L,63672L,63673L,63674L, -63675L,63676L,63677L,63678L,63679L,63680L,63681L,63682L,63683L,63684L, -63685L,63686L,63687L,63688L,63689L,63690L,63691L,63692L,63693L,63694L, -63695L,63696L,63697L,63698L,63699L,63700L,63701L,63702L,63703L,63704L, -63705L,63706L,63707L,63708L,63709L,63710L,63711L,63712L,63713L,63714L, -63715L,63716L,63717L,63718L,63719L,63720L,63721L,63722L,63723L,63724L, -63725L,63726L,63727L,63728L,63729L,63730L,63731L,63732L,63733L,63734L, -63735L,63736L,63737L,63738L,63739L,63740L,63741L,63742L,63743L,63744L, -63745L,63746L,63747L,63748L,63749L,63750L,63751L,63752L,63753L,63754L, -63755L,63756L,63757L,63758L,63759L,63760L,63761L,63762L,63763L,63764L, -63765L,63766L,63767L,63768L,63769L,63770L,63771L,63772L,63773L,63774L, -63775L,63776L,63777L,63778L,63779L,63780L,63781L,63782L,63783L,63784L, -63785L,63786L,63787L,63788L,63789L,63790L,63791L,63792L,63793L,63794L, -63795L,63796L,63797L,63798L,63799L,63800L,63801L,63802L,63803L,63804L, -63805L,63806L,63807L,63808L,63809L,63810L,63811L,63812L,63813L,63814L, -63815L,63816L,63817L,63818L,63819L,63820L,63821L,63822L,63823L,63824L, -63825L,63826L,63827L,63828L,63829L,63830L,63831L,63832L,63833L,63834L, -63835L,63836L,63837L,63838L,63839L,63840L,63841L,63842L,63843L,63844L, -63845L,63846L,63847L,63848L,63849L,63850L,63851L,63852L,63853L,63854L, -63855L,63856L,63857L,63858L,63859L,63860L,63861L,63862L,63863L,63864L, -63865L,63866L,63867L,63868L,63869L,63870L,63871L,63872L,63873L,63874L, -63875L,63876L,63877L,63878L,63879L,63880L,63881L,63882L,63883L,63884L, -63885L,63886L,63887L,63888L,63889L,63890L,63891L,63892L,63893L,63894L, -63895L,63896L,63897L,63898L,63899L,63900L,63901L,63902L,63903L,63904L, -63905L,63906L,63907L,63908L,63909L,63910L,63911L,63912L,63913L,63914L, -63915L,63916L,63917L,63918L,63919L,63920L,63921L,63922L,63923L,63924L, -63925L,63926L,63927L,63928L,63929L,63930L,63931L,63932L,63933L,63934L, -63935L,63936L,63937L,63938L,63939L,63940L,63941L,63942L,63943L,63944L, -63945L,63946L,63947L,63948L,63949L,63950L,63951L,63952L,63953L,63954L, -63955L,63956L,63957L,63958L,63959L,63960L,63961L,63962L,63963L,63964L, -63965L,63966L,63967L,63968L,63969L,63970L,63971L,63972L,63973L,63974L, -63975L,63976L,63977L,63978L,63979L,63980L,63981L,63982L,63983L,63984L, -63985L,63986L,63987L,63988L,63989L,63990L,63991L,63992L,63993L,63994L, -63995L,63996L,63997L,63998L,63999L,64000L,64001L,64002L,64003L,64004L, -64005L,64006L,64007L,64008L,64009L,64010L,64011L,64012L,64013L,64014L, -64015L,64016L,64017L,64018L,64019L,64020L,64021L,64022L,64023L,64024L, -64025L,64026L,64027L,64028L,64029L,64030L,64031L,64032L,64033L,64034L, -64035L,64036L,64037L,64038L,64039L,64040L,64041L,64042L,64043L,64044L, -64045L,64046L,64047L,64048L,64049L,64050L,64051L,64052L,64053L,64054L, -64055L,64056L,64057L,64058L,64059L,64060L,64061L,64062L,64063L,64064L, -64065L,64066L,64067L,64068L,64069L,64070L,64071L,64072L,64073L,64074L, -64075L,64076L,64077L,64078L,64079L,64080L,64081L,64082L,64083L,64084L, -64085L,64086L,64087L,64088L,64089L,64090L,64091L,64092L,64093L,64094L, -64095L,64096L,64097L,64098L,64099L,64100L,64101L,64102L,64103L,64104L, -64105L,64106L,64107L,64108L,64109L,64110L,64111L,64112L,64113L,64114L, -64115L,64116L,64117L,64118L,64119L,64120L,64121L,64122L,64123L,64124L, -64125L,64126L,64127L,64128L,64129L,64130L,64131L,64132L,64133L,64134L, -64135L,64136L,64137L,64138L,64139L,64140L,64141L,64142L,64143L,64144L, -64145L,64146L,64147L,64148L,64149L,64150L,64151L,64152L,64153L,64154L, -64155L,64156L,64157L,64158L,64159L,64160L,64161L,64162L,64163L,64164L, -64165L,64166L,64167L,64168L,64169L,64170L,64171L,64172L,64173L,64174L, -64175L,64176L,64177L,64178L,64179L,64180L,64181L,64182L,64183L,64184L, -64185L,64186L,64187L,64188L,64189L,64190L,64191L,64192L,64193L,64194L, -64195L,64196L,64197L,64198L,64199L,64200L,64201L,64202L,64203L,64204L, -64205L,64206L,64207L,64208L,64209L,64210L,64211L,64212L,64213L,64214L, -64215L,64216L,64217L,64218L,64219L,64220L,64221L,64222L,64223L,64224L, -64225L,64226L,64227L,64228L,64229L,64230L,64231L,64232L,64233L,64234L, -64235L,64236L,64237L,64238L,64239L,64240L,64241L,64242L,64243L,64244L, -64245L,64246L,64247L,64248L,64249L,64250L,64251L,64252L,64253L,64254L, -64255L,64256L,64257L,64258L,64259L,64260L,64261L,64262L,64263L,64264L, -64265L,64266L,64267L,64268L,64269L,64270L,64271L,64272L,64273L,64274L, -64275L,64276L,64277L,64278L,64279L,64280L,64281L,64282L,64283L,64284L, -64285L,64286L,64287L,64288L,64289L,64290L,64291L,64292L,64293L,64294L, -64295L,64296L,64297L,64298L,64299L,64300L,64301L,64302L,64303L,64304L, -64305L,64306L,64307L,64308L,64309L,64310L,64311L,64312L,64313L,64314L, -64315L,64316L,64317L,64318L,64319L,64320L,64321L,64322L,64323L,64324L, -64325L,64326L,64327L,64328L,64329L,64330L,64331L,64332L,64333L,64334L, -64335L,64336L,64337L,64338L,64339L,64340L,64341L,64342L,64343L,64344L, -64345L,64346L,64347L,64348L,64349L,64350L,64351L,64352L,64353L,64354L, -64355L,64356L,64357L,64358L,64359L,64360L,64361L,64362L,64363L,64364L, -64365L,64366L,64367L,64368L,64369L,64370L,64371L,64372L,64373L,64374L, -64375L,64376L,64377L,64378L,64379L,64380L,64381L,64382L,64383L,64384L, -64385L,64386L,64387L,64388L,64389L,64390L,64391L,64392L,64393L,64394L, -64395L,64396L,64397L,64398L,64399L,64400L,64401L,64402L,64403L,64404L, -64405L,64406L,64407L,64408L,64409L,64410L,64411L,64412L,64413L,64414L, -64415L,64416L,64417L,64418L,64419L,64420L,64421L,64422L,64423L,64424L, -64425L,64426L,64427L,64428L,64429L,64430L,64431L,64432L,64433L,64434L, -64435L,64436L,64437L,64438L,64439L,64440L,64441L,64442L,64443L,64444L, -64445L,64446L,64447L,64448L,64449L,64450L,64451L,64452L,64453L,64454L, -64455L,64456L,64457L,64458L,64459L,64460L,64461L,64462L,64463L,64464L, -64465L,64466L,64467L,64468L,64469L,64470L,64471L,64472L,64473L,64474L, -64475L,64476L,64477L,64478L,64479L,64480L,64481L,64482L,64483L,64484L, -64485L,64486L,64487L,64488L,64489L,64490L,64491L,64492L,64493L,64494L, -64495L,64496L,64497L,64498L,64499L,64500L,64501L,64502L,64503L,64504L, -64505L,64506L,64507L,64508L,64509L,64510L,64511L,64512L,64513L,64514L, -64515L,64516L,64517L,64518L,64519L,64520L,64521L,64522L,64523L,64524L, -64525L,64526L,64527L,64528L,64529L,64530L,64531L,64532L,64533L,64534L, -64535L,64536L,64537L,64538L,64539L,64540L,64541L,64542L,64543L,64544L, -64545L,64546L,64547L,64548L,64549L,64550L,64551L,64552L,64553L,64554L, -64555L,64556L,64557L,64558L,64559L,64560L,64561L,64562L,64563L,64564L, -64565L,64566L,64567L,64568L,64569L,64570L,64571L,64572L,64573L,64574L, -64575L,64576L,64577L,64578L,64579L,64580L,64581L,64582L,64583L,64584L, -64585L,64586L,64587L,64588L,64589L,64590L,64591L,64592L,64593L,64594L, -64595L,64596L,64597L,64598L,64599L,64600L,64601L,64602L,64603L,64604L, -64605L,64606L,64607L,64608L,64609L,64610L,64611L,64612L,64613L,64614L, -64615L,64616L,64617L,64618L,64619L,64620L,64621L,64622L,64623L,64624L, -64625L,64626L,64627L,64628L,64629L,64630L,64631L,64632L,64633L,64634L, -64635L,64636L,64637L,64638L,64639L,64640L,64641L,64642L,64643L,64644L, -64645L,64646L,64647L,64648L,64649L,64650L,64651L,64652L,64653L,64654L, -64655L,64656L,64657L,64658L,64659L,64660L,64661L,64662L,64663L,64664L, -64665L,64666L,64667L,64668L,64669L,64670L,64671L,64672L,64673L,64674L, -64675L,64676L,64677L,64678L,64679L,64680L,64681L,64682L,64683L,64684L, -64685L,64686L,64687L,64688L,64689L,64690L,64691L,64692L,64693L,64694L, -64695L,64696L,64697L,64698L,64699L,64700L,64701L,64702L,64703L,64704L, -64705L,64706L,64707L,64708L,64709L,64710L,64711L,64712L,64713L,64714L, -64715L,64716L,64717L,64718L,64719L,64720L,64721L,64722L,64723L,64724L, -64725L,64726L,64727L,64728L,64729L,64730L,64731L,64732L,64733L,64734L, -64735L,64736L,64737L,64738L,64739L,64740L,64741L,64742L,64743L,64744L, -64745L,64746L,64747L,64748L,64749L,64750L,64751L,64752L,64753L,64754L, -64755L,64756L,64757L,64758L,64759L,64760L,64761L,64762L,64763L,64764L, -64765L,64766L,64767L,64768L,64769L,64770L,64771L,64772L,64773L,64774L, -64775L,64776L,64777L,64778L,64779L,64780L,64781L,64782L,64783L,64784L, -64785L,64786L,64787L,64788L,64789L,64790L,64791L,64792L,64793L,64794L, -64795L,64796L,64797L,64798L,64799L,64800L,64801L,64802L,64803L,64804L, -64805L,64806L,64807L,64808L,64809L,64810L,64811L,64812L,64813L,64814L, -64815L,64816L,64817L,64818L,64819L,64820L,64821L,64822L,64823L,64824L, -64825L,64826L,64827L,64828L,64829L,64830L,64831L,64832L,64833L,64834L, -64835L,64836L,64837L,64838L,64839L,64840L,64841L,64842L,64843L,64844L, -64845L,64846L,64847L,64848L,64849L,64850L,64851L,64852L,64853L,64854L, -64855L,64856L,64857L,64858L,64859L,64860L,64861L,64862L,64863L,64864L, -64865L,64866L,64867L,64868L,64869L,64870L,64871L,64872L,64873L,64874L, -64875L,64876L,64877L,64878L,64879L,64880L,64881L,64882L,64883L,64884L, -64885L,64886L,64887L,64888L,64889L,64890L,64891L,64892L,64893L,64894L, -64895L,64896L,64897L,64898L,64899L,64900L,64901L,64902L,64903L,64904L, -64905L,64906L,64907L,64908L,64909L,64910L,64911L,64912L,64913L,64914L, -64915L,64916L,64917L,64918L,64919L,64920L,64921L,64922L,64923L,64924L, -64925L,64926L,64927L,64928L,64929L,64930L,64931L,64932L,64933L,64934L, -64935L,64936L,64937L,64938L,64939L,64940L,64941L,64942L,64943L,64944L, -64945L,64946L,64947L,64948L,64949L,64950L,64951L,64952L,64953L,64954L, -64955L,64956L,64957L,64958L,64959L,64960L,64961L,64962L,64963L,64964L, -64965L,64966L,64967L,64968L,64969L,64970L,64971L,64972L,64973L,64974L, -64975L,64976L,64977L,64978L,64979L,64980L,64981L,64982L,64983L,64984L, -64985L,64986L,64987L,64988L,64989L,64990L,64991L,64992L,64993L,64994L, -64995L,64996L,64997L,64998L,64999L,65000L,65001L,65002L,65003L,65004L, -65005L,65006L,65007L,65008L,65009L,65010L,65011L,65012L,65013L,65014L, -65015L,65016L,65017L,65018L,65019L,65020L,65021L,65022L,65023L,65024L, -65025L,65026L,65027L,65028L,65029L,65030L,65031L,65032L,65033L,65034L, -65035L,65036L,65037L,65038L,65039L,65040L,65041L,65042L,65043L,65044L, -65045L,65046L,65047L,65048L,65049L,65050L,65051L,65052L,65053L,65054L, -65055L,65056L,65057L,65058L,65059L,65060L,65061L,65062L,65063L,65064L, -65065L,65066L,65067L,65068L,65069L,65070L,65071L,65072L,65073L,65074L, -65075L,65076L,65077L,65078L,65079L,65080L,65081L,65082L,65083L,65084L, -65085L,65086L,65087L,65088L,65089L,65090L,65091L,65092L,65093L,65094L, -65095L,65096L,65097L,65098L,65099L,65100L,65101L,65102L,65103L,65104L, -65105L,65106L,65107L,65108L,65109L,65110L,65111L,65112L,65113L,65114L, -65115L,65116L,65117L,65118L,65119L,65120L,65121L,65122L,65123L,65124L, -65125L,65126L,65127L,65128L,65129L,65130L,65131L,65132L,65133L,65134L, -65135L,65136L,65137L,65138L,65139L,65140L,65141L,65142L,65143L,65144L, -65145L,65146L,65147L,65148L,65149L,65150L,65151L,65152L,65153L,65154L, -65155L,65156L,65157L,65158L,65159L,65160L,65161L,65162L,65163L,65164L, -65165L,65166L,65167L,65168L,65169L,65170L,65171L,65172L,65173L,65174L, -65175L,65176L,65177L,65178L,65179L,65180L,65181L,65182L,65183L,65184L, -65185L,65186L,65187L,65188L,65189L,65190L,65191L,65192L,65193L,65194L, -65195L,65196L,65197L,65198L,65199L,65200L,65201L,65202L,65203L,65204L, -65205L,65206L,65207L,65208L,65209L,65210L,65211L,65212L,65213L,65214L, -65215L,65216L,65217L,65218L,65219L,65220L,65221L,65222L,65223L,65224L, -65225L,65226L,65227L,65228L,65229L,65230L,65231L,65232L,65233L,65234L, -65235L,65236L,65237L,65238L,65239L,65240L,65241L,65242L,65243L,65244L, -65245L,65246L,65247L,65248L,65249L,65250L,65251L,65252L,65253L,65254L, -65255L,65256L,65257L,65258L,65259L,65260L,65261L,65262L,65263L,65264L, -65265L,65266L,65267L,65268L,65269L,65270L,65271L,65272L,65273L,65274L, -65275L,65276L,65277L,65278L,65279L,65280L,65281L,65282L,65283L,65284L, -65285L,65286L,65287L,65288L,65289L,65290L,65291L,65292L,65293L,65294L, -65295L,65296L,65297L,65298L,65299L,65300L,65301L,65302L,65303L,65304L, -65305L,65306L,65307L,65308L,65309L,65310L,65311L,65312L,65313L,65314L, -65315L,65316L,65317L,65318L,65319L,65320L,65321L,65322L,65323L,65324L, -65325L,65326L,65327L,65328L,65329L,65330L,65331L,65332L,65333L,65334L, -65335L,65336L,65337L,65338L,65339L,65340L,65341L,65342L,65343L,65344L, -65313L,65314L,65315L,65316L,65317L,65318L,65319L,65320L,65321L,65322L, -65323L,65324L,65325L,65326L,65327L,65328L,65329L,65330L,65331L,65332L, -65333L,65334L,65335L,65336L,65337L,65338L,65371L,65372L,65373L,65374L, -65375L,65376L,65377L,65378L,65379L,65380L,65381L,65382L,65383L,65384L, -65385L,65386L,65387L,65388L,65389L,65390L,65391L,65392L,65393L,65394L, -65395L,65396L,65397L,65398L,65399L,65400L,65401L,65402L,65403L,65404L, -65405L,65406L,65407L,65408L,65409L,65410L,65411L,65412L,65413L,65414L, -65415L,65416L,65417L,65418L,65419L,65420L,65421L,65422L,65423L,65424L, -65425L,65426L,65427L,65428L,65429L,65430L,65431L,65432L,65433L,65434L, -65435L,65436L,65437L,65438L,65439L,65440L,65441L,65442L,65443L,65444L, -65445L,65446L,65447L,65448L,65449L,65450L,65451L,65452L,65453L,65454L, -65455L,65456L,65457L,65458L,65459L,65460L,65461L,65462L,65463L,65464L, -65465L,65466L,65467L,65468L,65469L,65470L,65471L,65472L,65473L,65474L, -65475L,65476L,65477L,65478L,65479L,65480L,65481L,65482L,65483L,65484L, -65485L,65486L,65487L,65488L,65489L,65490L,65491L,65492L,65493L,65494L, -65495L,65496L,65497L,65498L,65499L,65500L,65501L,65502L,65503L,65504L, -65505L,65506L,65507L,65508L,65509L,65510L,65511L,65512L,65513L,65514L, -65515L,65516L,65517L,65518L,65519L,65520L,65521L,65522L,65523L,65524L, -65525L,65526L,65527L,65528L,65529L,65530L,65531L,65532L,65533L,65534L, -65535L, -}; -#endif - -#if defined(DUK_USE_REGEXP_CANON_BITMAP) -/* - * Automatically generated by extract_caseconv.py, do not edit! - */ - -const duk_uint8_t duk_unicode_re_canon_bitmap[256] = { -23,0,224,19,1,228,255,255,255,255,255,255,255,255,255,255,63,254,255,127, -255,255,255,255,255,255,255,255,231,231,0,16,255,227,255,255,63,255,255, -255,255,255,255,255,1,252,255,255,255,255,255,255,255,255,255,255,255,255, -255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255, -255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255, -255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255, -255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255, -255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255, -255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255, -227,129,255,255,255,147,255,255,255,255,255,255,255,255,255,255,255,255, -255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255, -255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255, -255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255, -255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,251, -}; -#endif -#line 1 "duk_util_bitdecoder.c" -/* - * Bitstream decoder. - */ - -/* #include duk_internal.h -> already included */ - -/* Decode 'bits' bits from the input stream (bits must be 1...24). - * When reading past bitstream end, zeroes are shifted in. The result - * is signed to match duk_bd_decode_flagged. - */ -DUK_INTERNAL duk_uint32_t duk_bd_decode(duk_bitdecoder_ctx *ctx, duk_small_int_t bits) { - duk_small_int_t shift; - duk_uint32_t mask; - duk_uint32_t tmp; - - /* Note: cannot read more than 24 bits without possibly shifting top bits out. - * Fixable, but adds complexity. - */ - DUK_ASSERT(bits >= 1 && bits <= 24); - - while (ctx->currbits < bits) { -#if 0 - DUK_DDD(DUK_DDDPRINT("decode_bits: shift more data (bits=%ld, currbits=%ld)", - (long) bits, (long) ctx->currbits)); -#endif - ctx->currval <<= 8; - if (ctx->offset < ctx->length) { - /* If ctx->offset >= ctx->length, we "shift zeroes in" - * instead of croaking. - */ - ctx->currval |= ctx->data[ctx->offset++]; - } - ctx->currbits += 8; - } -#if 0 - DUK_DDD(DUK_DDDPRINT("decode_bits: bits=%ld, currbits=%ld, currval=0x%08lx", - (long) bits, (long) ctx->currbits, (unsigned long) ctx->currval)); -#endif - - /* Extract 'top' bits of currval; note that the extracted bits do not need - * to be cleared, we just ignore them on next round. - */ - shift = ctx->currbits - bits; - mask = (((duk_uint32_t) 1U) << bits) - 1U; - tmp = (ctx->currval >> shift) & mask; - ctx->currbits = shift; /* remaining */ - -#if 0 - DUK_DDD(DUK_DDDPRINT("decode_bits: %ld bits -> 0x%08lx (%ld), currbits=%ld, currval=0x%08lx", - (long) bits, (unsigned long) tmp, (long) tmp, (long) ctx->currbits, (unsigned long) ctx->currval)); -#endif - - return tmp; -} - -DUK_INTERNAL duk_small_uint_t duk_bd_decode_flag(duk_bitdecoder_ctx *ctx) { - return (duk_small_uint_t) duk_bd_decode(ctx, 1); -} - -/* Decode a one-bit flag, and if set, decode a value of 'bits', otherwise return - * default value. - */ -DUK_INTERNAL duk_uint32_t duk_bd_decode_flagged(duk_bitdecoder_ctx *ctx, duk_small_int_t bits, duk_uint32_t def_value) { - if (duk_bd_decode_flag(ctx)) { - return duk_bd_decode(ctx, bits); - } else { - return def_value; - } -} - -/* Signed variant, allows negative marker value. */ -DUK_INTERNAL duk_int32_t duk_bd_decode_flagged_signed(duk_bitdecoder_ctx *ctx, duk_small_int_t bits, duk_int32_t def_value) { - return (duk_int32_t) duk_bd_decode_flagged(ctx, bits, (duk_uint32_t) def_value); -} - -/* Shared varint encoding. Match dukutil.py BitEncode.varuint(). */ -DUK_INTERNAL duk_uint32_t duk_bd_decode_varuint(duk_bitdecoder_ctx *ctx) { - duk_small_uint_t t; - - /* The bit encoding choices here are based on manual testing against - * the actual varuints generated by genbuiltins.py. - */ - switch (duk_bd_decode(ctx, 2)) { - case 0: - return 0; /* [0,0] */ - case 1: - return duk_bd_decode(ctx, 2) + 1; /* [1,4] */ - case 2: - return duk_bd_decode(ctx, 5) + 5; /* [5,36] */ - default: - t = duk_bd_decode(ctx, 7); - if (t == 0) { - return duk_bd_decode(ctx, 20); - } - return (t - 1) + 37; /* [37,163] */ - } -} - -/* Decode a bit packed string from a custom format used by genbuiltins.py. - * This function is here because it's used for both heap and thread inits. - * Caller must supply the output buffer whose size is NOT checked! - */ - -#define DUK__BITPACK_LETTER_LIMIT 26 -#define DUK__BITPACK_LOOKUP1 26 -#define DUK__BITPACK_LOOKUP2 27 -#define DUK__BITPACK_SWITCH1 28 -#define DUK__BITPACK_SWITCH 29 -#define DUK__BITPACK_UNUSED1 30 -#define DUK__BITPACK_EIGHTBIT 31 - -DUK_LOCAL const duk_uint8_t duk__bitpacked_lookup[16] = { DUK_ASC_0, DUK_ASC_1, DUK_ASC_2, DUK_ASC_3, - DUK_ASC_4, DUK_ASC_5, DUK_ASC_6, DUK_ASC_7, - DUK_ASC_8, DUK_ASC_9, DUK_ASC_UNDERSCORE, DUK_ASC_SPACE, - 0x82, 0x80, DUK_ASC_DOUBLEQUOTE, DUK_ASC_LCURLY }; - -DUK_INTERNAL duk_small_uint_t duk_bd_decode_bitpacked_string(duk_bitdecoder_ctx *bd, duk_uint8_t *out) { - duk_small_uint_t len; - duk_small_uint_t mode; - duk_small_uint_t t; - duk_small_uint_t i; - - len = duk_bd_decode(bd, 5); - if (len == 31) { - len = duk_bd_decode(bd, 8); /* Support up to 256 bytes; rare. */ - } - - mode = 32; /* 0 = uppercase, 32 = lowercase (= 'a' - 'A') */ - for (i = 0; i < len; i++) { - t = duk_bd_decode(bd, 5); - if (t < DUK__BITPACK_LETTER_LIMIT) { - t = t + DUK_ASC_UC_A + mode; - } else if (t == DUK__BITPACK_LOOKUP1) { - t = duk__bitpacked_lookup[duk_bd_decode(bd, 3)]; - } else if (t == DUK__BITPACK_LOOKUP2) { - t = duk__bitpacked_lookup[8 + duk_bd_decode(bd, 3)]; - } else if (t == DUK__BITPACK_SWITCH1) { - t = duk_bd_decode(bd, 5); - DUK_ASSERT_DISABLE(t >= 0); /* unsigned */ - DUK_ASSERT(t <= 25); - t = t + DUK_ASC_UC_A + (mode ^ 32); - } else if (t == DUK__BITPACK_SWITCH) { - mode = mode ^ 32; - t = duk_bd_decode(bd, 5); - DUK_ASSERT_DISABLE(t >= 0); - DUK_ASSERT(t <= 25); - t = t + DUK_ASC_UC_A + mode; - } else if (t == DUK__BITPACK_EIGHTBIT) { - t = duk_bd_decode(bd, 8); - } - out[i] = (duk_uint8_t) t; - } - - return len; -} - -/* automatic undefs */ -#undef DUK__BITPACK_EIGHTBIT -#undef DUK__BITPACK_LETTER_LIMIT -#undef DUK__BITPACK_LOOKUP1 -#undef DUK__BITPACK_LOOKUP2 -#undef DUK__BITPACK_SWITCH -#undef DUK__BITPACK_SWITCH1 -#undef DUK__BITPACK_UNUSED1 -#line 1 "duk_util_bitencoder.c" -/* - * Bitstream encoder. - */ - -/* #include duk_internal.h -> already included */ - -DUK_INTERNAL void duk_be_encode(duk_bitencoder_ctx *ctx, duk_uint32_t data, duk_small_int_t bits) { - duk_uint8_t tmp; - - DUK_ASSERT(ctx != NULL); - DUK_ASSERT(ctx->currbits < 8); - - /* This limitation would be fixable but adds unnecessary complexity. */ - DUK_ASSERT(bits >= 1 && bits <= 24); - - ctx->currval = (ctx->currval << bits) | data; - ctx->currbits += bits; - - while (ctx->currbits >= 8) { - if (ctx->offset < ctx->length) { - tmp = (duk_uint8_t) ((ctx->currval >> (ctx->currbits - 8)) & 0xff); - ctx->data[ctx->offset++] = tmp; - } else { - /* If buffer has been exhausted, truncate bitstream */ - ctx->truncated = 1; - } - - ctx->currbits -= 8; - } -} - -DUK_INTERNAL void duk_be_finish(duk_bitencoder_ctx *ctx) { - duk_small_int_t npad; - - DUK_ASSERT(ctx != NULL); - DUK_ASSERT(ctx->currbits < 8); - - npad = (duk_small_int_t) (8 - ctx->currbits); - if (npad > 0) { - duk_be_encode(ctx, 0, npad); - } - DUK_ASSERT(ctx->currbits == 0); -} -#line 1 "duk_util_bufwriter.c" -/* - * Fast buffer writer with slack management. - */ - -/* #include duk_internal.h -> already included */ - -/* XXX: Avoid duk_{memcmp,memmove}_unsafe() by imposing a minimum length of - * >0 for the underlying dynamic buffer. - */ - -/* - * Macro support functions (use only macros in calling code) - */ - -DUK_LOCAL void duk__bw_update_ptrs(duk_hthread *thr, duk_bufwriter_ctx *bw_ctx, duk_size_t curr_offset, duk_size_t new_length) { - duk_uint8_t *p; - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(bw_ctx != NULL); - DUK_UNREF(thr); - - /* 'p' might be NULL when the underlying buffer is zero size. If so, - * the resulting pointers are not used unsafely. - */ - p = (duk_uint8_t *) DUK_HBUFFER_DYNAMIC_GET_DATA_PTR(thr->heap, bw_ctx->buf); - DUK_ASSERT(p != NULL || (DUK_HBUFFER_DYNAMIC_GET_SIZE(bw_ctx->buf) == 0 && curr_offset == 0 && new_length == 0)); - bw_ctx->p = p + curr_offset; - bw_ctx->p_base = p; - bw_ctx->p_limit = p + new_length; -} - -DUK_INTERNAL void duk_bw_init(duk_hthread *thr, duk_bufwriter_ctx *bw_ctx, duk_hbuffer_dynamic *h_buf) { - DUK_ASSERT(thr != NULL); - DUK_ASSERT(bw_ctx != NULL); - DUK_ASSERT(h_buf != NULL); - - bw_ctx->buf = h_buf; - duk__bw_update_ptrs(thr, bw_ctx, 0, DUK_HBUFFER_DYNAMIC_GET_SIZE(h_buf)); -} - -DUK_INTERNAL void duk_bw_init_pushbuf(duk_hthread *thr, duk_bufwriter_ctx *bw_ctx, duk_size_t buf_size) { - DUK_ASSERT(thr != NULL); - DUK_ASSERT(bw_ctx != NULL); - - (void) duk_push_dynamic_buffer(thr, buf_size); - bw_ctx->buf = (duk_hbuffer_dynamic *) duk_known_hbuffer(thr, -1); - DUK_ASSERT(bw_ctx->buf != NULL); - duk__bw_update_ptrs(thr, bw_ctx, 0, buf_size); -} - -/* Resize target buffer for requested size. Called by the macro only when the - * fast path test (= there is space) fails. - */ -DUK_INTERNAL duk_uint8_t *duk_bw_resize(duk_hthread *thr, duk_bufwriter_ctx *bw_ctx, duk_size_t sz) { - duk_size_t curr_off; - duk_size_t add_sz; - duk_size_t new_sz; - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(bw_ctx != NULL); - - /* We could do this operation without caller updating bw_ctx->ptr, - * but by writing it back here we can share code better. - */ - - curr_off = (duk_size_t) (bw_ctx->p - bw_ctx->p_base); - add_sz = (curr_off >> DUK_BW_SLACK_SHIFT) + DUK_BW_SLACK_ADD; - new_sz = curr_off + sz + add_sz; - if (DUK_UNLIKELY(new_sz < curr_off)) { - /* overflow */ - DUK_ERROR_RANGE(thr, DUK_STR_BUFFER_TOO_LONG); - DUK_WO_NORETURN(return NULL;); - } -#if 0 /* for manual torture testing: tight allocation, useful with valgrind */ - new_sz = curr_off + sz; -#endif - - /* This is important to ensure dynamic buffer data pointer is not - * NULL (which is possible if buffer size is zero), which in turn - * causes portability issues with e.g. memmove() and memcpy(). - */ - DUK_ASSERT(new_sz >= 1); - - DUK_DD(DUK_DDPRINT("resize bufferwriter from %ld to %ld (add_sz=%ld)", (long) curr_off, (long) new_sz, (long) add_sz)); - - duk_hbuffer_resize(thr, bw_ctx->buf, new_sz); - duk__bw_update_ptrs(thr, bw_ctx, curr_off, new_sz); - return bw_ctx->p; -} - -/* Make buffer compact, matching current written size. */ -DUK_INTERNAL void duk_bw_compact(duk_hthread *thr, duk_bufwriter_ctx *bw_ctx) { - duk_size_t len; - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(bw_ctx != NULL); - DUK_UNREF(thr); - - len = (duk_size_t) (bw_ctx->p - bw_ctx->p_base); - duk_hbuffer_resize(thr, bw_ctx->buf, len); - duk__bw_update_ptrs(thr, bw_ctx, len, len); -} - -DUK_INTERNAL void duk_bw_write_raw_slice(duk_hthread *thr, duk_bufwriter_ctx *bw, duk_size_t src_off, duk_size_t len) { - duk_uint8_t *p_base; - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(bw != NULL); - DUK_ASSERT(src_off <= DUK_BW_GET_SIZE(thr, bw)); - DUK_ASSERT(len <= DUK_BW_GET_SIZE(thr, bw)); - DUK_ASSERT(src_off + len <= DUK_BW_GET_SIZE(thr, bw)); - DUK_UNREF(thr); - - p_base = bw->p_base; - duk_memcpy_unsafe((void *) bw->p, (const void *) (p_base + src_off), (size_t) len); - bw->p += len; -} - -DUK_INTERNAL void duk_bw_write_ensure_slice(duk_hthread *thr, duk_bufwriter_ctx *bw, duk_size_t src_off, duk_size_t len) { - DUK_ASSERT(thr != NULL); - DUK_ASSERT(bw != NULL); - DUK_ASSERT(src_off <= DUK_BW_GET_SIZE(thr, bw)); - DUK_ASSERT(len <= DUK_BW_GET_SIZE(thr, bw)); - DUK_ASSERT(src_off + len <= DUK_BW_GET_SIZE(thr, bw)); - - DUK_BW_ENSURE(thr, bw, len); - duk_bw_write_raw_slice(thr, bw, src_off, len); -} - -DUK_INTERNAL void duk_bw_insert_raw_bytes(duk_hthread *thr, - duk_bufwriter_ctx *bw, - duk_size_t dst_off, - const duk_uint8_t *buf, - duk_size_t len) { - duk_uint8_t *p_base; - duk_size_t buf_sz, move_sz; - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(bw != NULL); - DUK_ASSERT(dst_off <= DUK_BW_GET_SIZE(thr, bw)); - DUK_ASSERT(buf != NULL); - DUK_UNREF(thr); - - p_base = bw->p_base; - buf_sz = (duk_size_t) (bw->p - p_base); /* constrained by maximum buffer size */ - move_sz = buf_sz - dst_off; - - DUK_ASSERT(p_base != NULL); /* buffer size is >= 1 */ - duk_memmove_unsafe((void *) (p_base + dst_off + len), (const void *) (p_base + dst_off), (size_t) move_sz); - duk_memcpy_unsafe((void *) (p_base + dst_off), (const void *) buf, (size_t) len); - bw->p += len; -} - -DUK_INTERNAL void duk_bw_insert_ensure_bytes(duk_hthread *thr, - duk_bufwriter_ctx *bw, - duk_size_t dst_off, - const duk_uint8_t *buf, - duk_size_t len) { - DUK_ASSERT(thr != NULL); - DUK_ASSERT(bw != NULL); - DUK_ASSERT(dst_off <= DUK_BW_GET_SIZE(thr, bw)); - DUK_ASSERT(buf != NULL); - - DUK_BW_ENSURE(thr, bw, len); - duk_bw_insert_raw_bytes(thr, bw, dst_off, buf, len); -} - -DUK_INTERNAL void duk_bw_insert_raw_slice(duk_hthread *thr, - duk_bufwriter_ctx *bw, - duk_size_t dst_off, - duk_size_t src_off, - duk_size_t len) { - duk_uint8_t *p_base; - duk_size_t buf_sz, move_sz; - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(bw != NULL); - DUK_ASSERT(dst_off <= DUK_BW_GET_SIZE(thr, bw)); - DUK_ASSERT(src_off <= DUK_BW_GET_SIZE(thr, bw)); - DUK_ASSERT(len <= DUK_BW_GET_SIZE(thr, bw)); - DUK_ASSERT(src_off + len <= DUK_BW_GET_SIZE(thr, bw)); - DUK_UNREF(thr); - - p_base = bw->p_base; - - /* Don't support "straddled" source now. */ - DUK_ASSERT(dst_off <= src_off || dst_off >= src_off + len); - - if (dst_off <= src_off) { - /* Target is before source. Source offset is expressed as - * a "before change" offset. Account for the memmove. - */ - src_off += len; - } - - buf_sz = (duk_size_t) (bw->p - p_base); - move_sz = buf_sz - dst_off; - - DUK_ASSERT(p_base != NULL); /* buffer size is >= 1 */ - duk_memmove_unsafe((void *) (p_base + dst_off + len), (const void *) (p_base + dst_off), (size_t) move_sz); - duk_memcpy_unsafe((void *) (p_base + dst_off), (const void *) (p_base + src_off), (size_t) len); - bw->p += len; -} - -DUK_INTERNAL void duk_bw_insert_ensure_slice(duk_hthread *thr, - duk_bufwriter_ctx *bw, - duk_size_t dst_off, - duk_size_t src_off, - duk_size_t len) { - DUK_ASSERT(thr != NULL); - DUK_ASSERT(bw != NULL); - DUK_ASSERT(dst_off <= DUK_BW_GET_SIZE(thr, bw)); - DUK_ASSERT(src_off <= DUK_BW_GET_SIZE(thr, bw)); - DUK_ASSERT(len <= DUK_BW_GET_SIZE(thr, bw)); - DUK_ASSERT(src_off + len <= DUK_BW_GET_SIZE(thr, bw)); - - /* Don't support "straddled" source now. */ - DUK_ASSERT(dst_off <= src_off || dst_off >= src_off + len); - - DUK_BW_ENSURE(thr, bw, len); - duk_bw_insert_raw_slice(thr, bw, dst_off, src_off, len); -} - -DUK_INTERNAL duk_uint8_t *duk_bw_insert_raw_area(duk_hthread *thr, duk_bufwriter_ctx *bw, duk_size_t off, duk_size_t len) { - duk_uint8_t *p_base, *p_dst, *p_src; - duk_size_t buf_sz, move_sz; - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(bw != NULL); - DUK_ASSERT(off <= DUK_BW_GET_SIZE(thr, bw)); - DUK_UNREF(thr); - - p_base = bw->p_base; - buf_sz = (duk_size_t) (bw->p - p_base); - move_sz = buf_sz - off; - p_dst = p_base + off + len; - p_src = p_base + off; - duk_memmove_unsafe((void *) p_dst, (const void *) p_src, (size_t) move_sz); - return p_src; /* point to start of 'reserved area' */ -} - -DUK_INTERNAL duk_uint8_t *duk_bw_insert_ensure_area(duk_hthread *thr, duk_bufwriter_ctx *bw, duk_size_t off, duk_size_t len) { - DUK_ASSERT(thr != NULL); - DUK_ASSERT(bw != NULL); - DUK_ASSERT(off <= DUK_BW_GET_SIZE(thr, bw)); - - DUK_BW_ENSURE(thr, bw, len); - return duk_bw_insert_raw_area(thr, bw, off, len); -} - -DUK_INTERNAL void duk_bw_remove_raw_slice(duk_hthread *thr, duk_bufwriter_ctx *bw, duk_size_t off, duk_size_t len) { - duk_size_t move_sz; - - duk_uint8_t *p_base; - duk_uint8_t *p_src; - duk_uint8_t *p_dst; - - DUK_ASSERT(thr != NULL); - DUK_ASSERT(bw != NULL); - DUK_ASSERT(off <= DUK_BW_GET_SIZE(thr, bw)); - DUK_ASSERT(len <= DUK_BW_GET_SIZE(thr, bw)); - DUK_ASSERT(off + len <= DUK_BW_GET_SIZE(thr, bw)); - DUK_UNREF(thr); - - p_base = bw->p_base; - p_dst = p_base + off; - p_src = p_dst + len; - move_sz = (duk_size_t) (bw->p - p_src); - duk_memmove_unsafe((void *) p_dst, (const void *) p_src, (size_t) move_sz); - bw->p -= len; -} - -/* - * Assertion helpers - */ - -#if defined(DUK_USE_ASSERTIONS) -DUK_INTERNAL void duk_bw_assert_valid(duk_hthread *thr, duk_bufwriter_ctx *bw_ctx) { - DUK_UNREF(thr); - DUK_ASSERT(bw_ctx != NULL); - DUK_ASSERT(bw_ctx->buf != NULL); - DUK_ASSERT((DUK_HBUFFER_DYNAMIC_GET_SIZE(bw_ctx->buf) == 0) || - (bw_ctx->p != NULL && bw_ctx->p_base != NULL && bw_ctx->p_limit != NULL && bw_ctx->p_limit >= bw_ctx->p_base && - bw_ctx->p >= bw_ctx->p_base && bw_ctx->p <= bw_ctx->p_limit)); -} -#endif -#line 1 "duk_util_cast.c" -/* - * Cast helpers. - * - * C99+ coercion is challenging portability-wise because out-of-range casts - * may invoke implementation defined or even undefined behavior. See e.g. - * http://blog.frama-c.com/index.php?post/2013/10/09/Overflow-float-integer. - * - * Provide explicit cast helpers which try to avoid implementation defined - * or undefined behavior. These helpers can then be simplified in the vast - * majority of cases where the implementation defined or undefined behavior - * is not problematic. - */ - -/* #include duk_internal.h -> already included */ - -/* Portable double-to-integer cast which avoids undefined behavior and avoids - * relying on fmin(), fmax(), or other intrinsics. Out-of-range results are - * not assumed by caller, but here value is clamped, NaN converts to minval. - */ -#define DUK__DOUBLE_INT_CAST1(tname, minval, maxval) \ - do { \ - if (DUK_LIKELY(x >= (duk_double_t) (minval))) { \ - DUK_ASSERT(!DUK_ISNAN(x)); \ - if (DUK_LIKELY(x <= (duk_double_t) (maxval))) { \ - return (tname) x; \ - } else { \ - return (tname) (maxval); \ - } \ - } else { \ - /* NaN or below minval. Since we don't care about the result \ - * for out-of-range values, just return the minimum value for \ - * both. \ - */ \ - return (tname) (minval); \ - } \ - } while (0) - -/* Rely on specific NaN behavior for duk_double_{fmin,fmax}(): if either - * argument is a NaN, return the second argument. This avoids a - * NaN-to-integer cast which is undefined behavior. - */ -#define DUK__DOUBLE_INT_CAST2(tname, minval, maxval) \ - do { \ - return (tname) duk_double_fmin(duk_double_fmax(x, (duk_double_t) (minval)), (duk_double_t) (maxval)); \ - } while (0) - -/* Another solution which doesn't need C99+ behavior for fmin() and fmax(). */ -#define DUK__DOUBLE_INT_CAST3(tname, minval, maxval) \ - do { \ - if (DUK_ISNAN(x)) { \ - /* 0 or any other value is fine. */ \ - return (tname) 0; \ - } else \ - return (tname) DUK_FMIN(DUK_FMAX(x, (duk_double_t) (minval)), (duk_double_t) (maxval)); \ - } \ - } \ - while (0) - -/* C99+ solution: relies on specific fmin() and fmax() behavior in C99: if - * one argument is NaN but the other isn't, the non-NaN argument is returned. - * Because the limits are non-NaN values, explicit NaN check is not needed. - * This may not work on all legacy platforms, and also doesn't seem to inline - * the fmin() and fmax() calls (unless one uses -ffast-math which we don't - * support). - */ -#define DUK__DOUBLE_INT_CAST4(tname, minval, maxval) \ - do { \ - return (tname) DUK_FMIN(DUK_FMAX(x, (duk_double_t) (minval)), (duk_double_t) (maxval)); \ - } while (0) - -DUK_INTERNAL duk_int_t duk_double_to_int_t(duk_double_t x) { -#if defined(DUK_USE_ALLOW_UNDEFINED_BEHAVIOR) - /* Real world solution: almost any practical platform will provide - * an integer value without any guarantees what it is (which is fine). - */ - return (duk_int_t) x; -#else - DUK__DOUBLE_INT_CAST1(duk_int_t, DUK_INT_MIN, DUK_INT_MAX); -#endif -} - -DUK_INTERNAL duk_uint_t duk_double_to_uint_t(duk_double_t x) { -#if defined(DUK_USE_ALLOW_UNDEFINED_BEHAVIOR) - return (duk_uint_t) x; -#else - DUK__DOUBLE_INT_CAST1(duk_uint_t, DUK_UINT_MIN, DUK_UINT_MAX); -#endif -} - -DUK_INTERNAL duk_int32_t duk_double_to_int32_t(duk_double_t x) { -#if defined(DUK_USE_ALLOW_UNDEFINED_BEHAVIOR) - return (duk_int32_t) x; -#else - DUK__DOUBLE_INT_CAST1(duk_int32_t, DUK_INT32_MIN, DUK_INT32_MAX); -#endif -} - -DUK_INTERNAL duk_uint32_t duk_double_to_uint32_t(duk_double_t x) { -#if defined(DUK_USE_ALLOW_UNDEFINED_BEHAVIOR) - return (duk_uint32_t) x; -#else - DUK__DOUBLE_INT_CAST1(duk_uint32_t, DUK_UINT32_MIN, DUK_UINT32_MAX); -#endif -} - -/* Largest IEEE double that doesn't round to infinity in the default rounding - * mode. The exact midpoint between (1 - 2^(-24)) * 2^128 and 2^128 rounds to - * infinity, at least on x64. This number is one double unit below that - * midpoint. See misc/float_cast.c. - */ -#define DUK__FLOAT_ROUND_LIMIT 340282356779733623858607532500980858880.0 - -/* Maximum IEEE float. Double-to-float conversion above this would be out of - * range and thus technically undefined behavior. - */ -#define DUK__FLOAT_MAX 340282346638528859811704183484516925440.0 - -DUK_INTERNAL duk_float_t duk_double_to_float_t(duk_double_t x) { - /* Even a double-to-float cast is technically undefined behavior if - * the double is out-of-range. C99 Section 6.3.1.5: - * - * If the value being converted is in the range of values that can - * be represented but cannot be represented exactly, the result is - * either the nearest higher or nearest lower representable value, - * chosen in an implementation-defined manner. If the value being - * converted is outside the range of values that can be represented, - * the behavior is undefined. - */ -#if defined(DUK_USE_ALLOW_UNDEFINED_BEHAVIOR) - return (duk_float_t) x; -#else - duk_double_t t; - - t = DUK_FABS(x); - DUK_ASSERT((DUK_ISNAN(x) && DUK_ISNAN(t)) || (!DUK_ISNAN(x) && !DUK_ISNAN(t))); - - if (DUK_LIKELY(t <= DUK__FLOAT_MAX)) { - /* Standard in-range case, try to get here with a minimum - * number of checks and branches. - */ - DUK_ASSERT(!DUK_ISNAN(x)); - return (duk_float_t) x; - } else if (t <= DUK__FLOAT_ROUND_LIMIT) { - /* Out-of-range, but rounds to min/max float. */ - DUK_ASSERT(!DUK_ISNAN(x)); - if (x < 0.0) { - return (duk_float_t) -DUK__FLOAT_MAX; - } else { - return (duk_float_t) DUK__FLOAT_MAX; - } - } else if (DUK_ISNAN(x)) { - /* Assumes double NaN -> float NaN considered "in range". */ - DUK_ASSERT(DUK_ISNAN(x)); - return (duk_float_t) x; - } else { - /* Out-of-range, rounds to +/- Infinity. */ - if (x < 0.0) { - return (duk_float_t) -DUK_DOUBLE_INFINITY; - } else { - return (duk_float_t) DUK_DOUBLE_INFINITY; - } - } -#endif -} - -/* automatic undefs */ -#undef DUK__DOUBLE_INT_CAST1 -#undef DUK__DOUBLE_INT_CAST2 -#undef DUK__DOUBLE_INT_CAST3 -#undef DUK__DOUBLE_INT_CAST4 -#undef DUK__FLOAT_MAX -#undef DUK__FLOAT_ROUND_LIMIT -#line 1 "duk_util_double.c" -/* - * IEEE double helpers. - */ - -/* #include duk_internal.h -> already included */ - -DUK_INTERNAL duk_bool_t duk_double_is_anyinf(duk_double_t x) { - duk_double_union du; - du.d = x; - return DUK_DBLUNION_IS_ANYINF(&du); -} - -DUK_INTERNAL duk_bool_t duk_double_is_posinf(duk_double_t x) { - duk_double_union du; - du.d = x; - return DUK_DBLUNION_IS_POSINF(&du); -} - -DUK_INTERNAL duk_bool_t duk_double_is_neginf(duk_double_t x) { - duk_double_union du; - du.d = x; - return DUK_DBLUNION_IS_NEGINF(&du); -} - -DUK_INTERNAL duk_bool_t duk_double_is_nan(duk_double_t x) { - duk_double_union du; - du.d = x; - /* Assumes we're dealing with a Duktape internal NaN which is - * NaN normalized if duk_tval requires it. - */ - DUK_ASSERT(DUK_DBLUNION_IS_NORMALIZED(&du)); - return DUK_DBLUNION_IS_NAN(&du); -} - -DUK_INTERNAL duk_bool_t duk_double_is_nan_or_zero(duk_double_t x) { - duk_double_union du; - du.d = x; - /* Assumes we're dealing with a Duktape internal NaN which is - * NaN normalized if duk_tval requires it. - */ - DUK_ASSERT(DUK_DBLUNION_IS_NORMALIZED(&du)); - return DUK_DBLUNION_IS_NAN(&du) || DUK_DBLUNION_IS_ANYZERO(&du); -} - -DUK_INTERNAL duk_bool_t duk_double_is_nan_or_inf(duk_double_t x) { - duk_double_union du; - du.d = x; - /* If exponent is 0x7FF the argument is either a NaN or an - * infinity. We don't need to check any other fields. - */ -#if defined(DUK_USE_64BIT_OPS) -#if defined(DUK_USE_DOUBLE_ME) - return (du.ull[DUK_DBL_IDX_ULL0] & DUK_U64_CONSTANT(0x000000007ff00000)) == DUK_U64_CONSTANT(0x000000007ff00000); -#else - return (du.ull[DUK_DBL_IDX_ULL0] & DUK_U64_CONSTANT(0x7ff0000000000000)) == DUK_U64_CONSTANT(0x7ff0000000000000); -#endif -#else - return (du.ui[DUK_DBL_IDX_UI0] & 0x7ff00000UL) == 0x7ff00000UL; -#endif -} - -DUK_INTERNAL duk_bool_t duk_double_is_nan_zero_inf(duk_double_t x) { - duk_double_union du; -#if defined(DUK_USE_64BIT_OPS) - duk_uint64_t t; -#else - duk_uint32_t t; -#endif - du.d = x; -#if defined(DUK_USE_64BIT_OPS) -#if defined(DUK_USE_DOUBLE_ME) - t = du.ull[DUK_DBL_IDX_ULL0] & DUK_U64_CONSTANT(0x000000007ff00000); - if (t == DUK_U64_CONSTANT(0x0000000000000000)) { - t = du.ull[DUK_DBL_IDX_ULL0] & DUK_U64_CONSTANT(0x0000000080000000); - return t == 0; - } - if (t == DUK_U64_CONSTANT(0x000000007ff00000)) { - return 1; - } -#else - t = du.ull[DUK_DBL_IDX_ULL0] & DUK_U64_CONSTANT(0x7ff0000000000000); - if (t == DUK_U64_CONSTANT(0x0000000000000000)) { - t = du.ull[DUK_DBL_IDX_ULL0] & DUK_U64_CONSTANT(0x8000000000000000); - return t == 0; - } - if (t == DUK_U64_CONSTANT(0x7ff0000000000000)) { - return 1; - } -#endif -#else - t = du.ui[DUK_DBL_IDX_UI0] & 0x7ff00000UL; - if (t == 0x00000000UL) { - return DUK_DBLUNION_IS_ANYZERO(&du); - } - if (t == 0x7ff00000UL) { - return 1; - } -#endif - return 0; -} - -DUK_INTERNAL duk_small_uint_t duk_double_signbit(duk_double_t x) { - duk_double_union du; - du.d = x; - return (duk_small_uint_t) DUK_DBLUNION_GET_SIGNBIT(&du); -} - -DUK_INTERNAL duk_double_t duk_double_trunc_towards_zero(duk_double_t x) { - /* XXX: optimize */ - duk_small_uint_t s = duk_double_signbit(x); - x = DUK_FLOOR(DUK_FABS(x)); /* truncate towards zero */ - if (s) { - x = -x; - } - return x; -} - -DUK_INTERNAL duk_bool_t duk_double_same_sign(duk_double_t x, duk_double_t y) { - duk_double_union du1; - duk_double_union du2; - du1.d = x; - du2.d = y; - - return (((du1.ui[DUK_DBL_IDX_UI0] ^ du2.ui[DUK_DBL_IDX_UI0]) & 0x80000000UL) == 0); -} - -DUK_INTERNAL duk_double_t duk_double_fmin(duk_double_t x, duk_double_t y) { - /* Doesn't replicate fmin() behavior exactly: for fmin() if one - * argument is a NaN, the other argument should be returned. - * Duktape doesn't rely on this behavior so the replacement can - * be simplified. - */ - return (x < y ? x : y); -} - -DUK_INTERNAL duk_double_t duk_double_fmax(duk_double_t x, duk_double_t y) { - /* Doesn't replicate fmax() behavior exactly: for fmax() if one - * argument is a NaN, the other argument should be returned. - * Duktape doesn't rely on this behavior so the replacement can - * be simplified. - */ - return (x > y ? x : y); -} - -DUK_INTERNAL duk_bool_t duk_double_is_finite(duk_double_t x) { - return !duk_double_is_nan_or_inf(x); -} - -DUK_INTERNAL duk_bool_t duk_double_is_integer(duk_double_t x) { - if (duk_double_is_nan_or_inf(x)) { - return 0; - } else { - return duk_double_equals(duk_js_tointeger_number(x), x); - } -} - -DUK_INTERNAL duk_bool_t duk_double_is_safe_integer(duk_double_t x) { - /* >>> 2**53-1 - * 9007199254740991 - */ - return duk_double_is_integer(x) && DUK_FABS(x) <= 9007199254740991.0; -} - -/* Check whether a duk_double_t is a whole number in the 32-bit range (reject - * negative zero), and if so, return a duk_int32_t. - * For compiler use: don't allow negative zero as it will cause trouble with - * LDINT+LDINTX, positive zero is OK. - */ -DUK_INTERNAL duk_bool_t duk_is_whole_get_int32_nonegzero(duk_double_t x, duk_int32_t *ival) { - duk_int32_t t; - - t = duk_double_to_int32_t(x); - if (!duk_double_equals((duk_double_t) t, x)) { - return 0; - } - if (t == 0) { - duk_double_union du; - du.d = x; - if (DUK_DBLUNION_HAS_SIGNBIT(&du)) { - return 0; - } - } - *ival = t; - return 1; -} - -/* Check whether a duk_double_t is a whole number in the 32-bit range, and if - * so, return a duk_int32_t. - */ -DUK_INTERNAL duk_bool_t duk_is_whole_get_int32(duk_double_t x, duk_int32_t *ival) { - duk_int32_t t; - - t = duk_double_to_int32_t(x); - if (!duk_double_equals((duk_double_t) t, x)) { - return 0; - } - *ival = t; - return 1; -} - -/* Division: division by zero is undefined behavior (and may in fact trap) - * so it needs special handling for portability. - */ - -DUK_INTERNAL DUK_INLINE duk_double_t duk_double_div(duk_double_t x, duk_double_t y) { -#if !defined(DUK_USE_ALLOW_UNDEFINED_BEHAVIOR) - if (DUK_UNLIKELY(duk_double_equals(y, 0.0) != 0)) { - /* In C99+ division by zero is undefined behavior so - * avoid it entirely. Hopefully the compiler is - * smart enough to avoid emitting any actual code - * because almost all practical platforms behave as - * expected. - */ - if (x > 0.0) { - if (DUK_SIGNBIT(y)) { - return -DUK_DOUBLE_INFINITY; - } else { - return DUK_DOUBLE_INFINITY; - } - } else if (x < 0.0) { - if (DUK_SIGNBIT(y)) { - return DUK_DOUBLE_INFINITY; - } else { - return -DUK_DOUBLE_INFINITY; - } - } else { - /* +/- 0, NaN */ - return DUK_DOUBLE_NAN; - } - } -#endif - - return x / y; -} - -/* Double and float byteorder changes. */ - -DUK_INTERNAL DUK_INLINE void duk_dblunion_host_to_little(duk_double_union *u) { -#if defined(DUK_USE_DOUBLE_LE) - /* HGFEDCBA -> HGFEDCBA */ - DUK_UNREF(u); -#elif defined(DUK_USE_DOUBLE_ME) - duk_uint32_t a, b; - - /* DCBAHGFE -> HGFEDCBA */ - a = u->ui[0]; - b = u->ui[1]; - u->ui[0] = b; - u->ui[1] = a; -#elif defined(DUK_USE_DOUBLE_BE) - /* ABCDEFGH -> HGFEDCBA */ -#if defined(DUK_USE_64BIT_OPS) - u->ull[0] = DUK_BSWAP64(u->ull[0]); -#else - duk_uint32_t a, b; - - a = u->ui[0]; - b = u->ui[1]; - u->ui[0] = DUK_BSWAP32(b); - u->ui[1] = DUK_BSWAP32(a); -#endif -#else -#error internal error -#endif -} - -DUK_INTERNAL DUK_INLINE void duk_dblunion_little_to_host(duk_double_union *u) { - duk_dblunion_host_to_little(u); -} - -DUK_INTERNAL DUK_INLINE void duk_dblunion_host_to_big(duk_double_union *u) { -#if defined(DUK_USE_DOUBLE_LE) - /* HGFEDCBA -> ABCDEFGH */ -#if defined(DUK_USE_64BIT_OPS) - u->ull[0] = DUK_BSWAP64(u->ull[0]); -#else - duk_uint32_t a, b; - - a = u->ui[0]; - b = u->ui[1]; - u->ui[0] = DUK_BSWAP32(b); - u->ui[1] = DUK_BSWAP32(a); -#endif -#elif defined(DUK_USE_DOUBLE_ME) - duk_uint32_t a, b; - - /* DCBAHGFE -> ABCDEFGH */ - a = u->ui[0]; - b = u->ui[1]; - u->ui[0] = DUK_BSWAP32(a); - u->ui[1] = DUK_BSWAP32(b); -#elif defined(DUK_USE_DOUBLE_BE) - /* ABCDEFGH -> ABCDEFGH */ - DUK_UNREF(u); -#else -#error internal error -#endif -} - -DUK_INTERNAL DUK_INLINE void duk_dblunion_big_to_host(duk_double_union *u) { - duk_dblunion_host_to_big(u); -} - -DUK_INTERNAL DUK_INLINE void duk_fltunion_host_to_big(duk_float_union *u) { -#if defined(DUK_USE_DOUBLE_LE) || defined(DUK_USE_DOUBLE_ME) - /* DCBA -> ABCD */ - u->ui[0] = DUK_BSWAP32(u->ui[0]); -#elif defined(DUK_USE_DOUBLE_BE) - /* ABCD -> ABCD */ - DUK_UNREF(u); -#else -#error internal error -#endif -} - -DUK_INTERNAL DUK_INLINE void duk_fltunion_big_to_host(duk_float_union *u) { - duk_fltunion_host_to_big(u); -} - -/* Comparison: ensures comparison operates on exactly correct types, avoiding - * some floating point comparison pitfalls (e.g. atan2() assertions failed on - * -m32 with direct comparison, even with explicit casts). - */ -#if defined(DUK_USE_GCC_PRAGMAS) -#pragma GCC diagnostic push -#pragma GCC diagnostic ignored "-Wfloat-equal" -#elif defined(DUK_USE_CLANG_PRAGMAS) -#pragma clang diagnostic push -#pragma clang diagnostic ignored "-Wfloat-equal" -#endif - -DUK_INTERNAL DUK_ALWAYS_INLINE duk_bool_t duk_double_equals(duk_double_t x, duk_double_t y) { - return x == y; -} - -DUK_INTERNAL DUK_ALWAYS_INLINE duk_bool_t duk_float_equals(duk_float_t x, duk_float_t y) { - return x == y; -} -#if defined(DUK_USE_GCC_PRAGMAS) -#pragma GCC diagnostic pop -#elif defined(DUK_USE_CLANG_PRAGMAS) -#pragma clang diagnostic pop -#endif -#line 1 "duk_util_hashbytes.c" -/* - * Hash function duk_util_hashbytes(). - * - * Currently, 32-bit MurmurHash2. - * - * Don't rely on specific hash values; hash function may be endianness - * dependent, for instance. - */ - -/* #include duk_internal.h -> already included */ - -#if defined(DUK_USE_STRHASH_DENSE) -/* 'magic' constants for Murmurhash2 */ -#define DUK__MAGIC_M ((duk_uint32_t) 0x5bd1e995UL) -#define DUK__MAGIC_R 24 - -DUK_INTERNAL duk_uint32_t duk_util_hashbytes(const duk_uint8_t *data, duk_size_t len, duk_uint32_t seed) { - duk_uint32_t h = seed ^ ((duk_uint32_t) len); - - while (len >= 4) { - /* Portability workaround is required for platforms without - * unaligned access. The replacement code emulates little - * endian access even on big endian architectures, which is - * OK as long as it is consistent for a build. - */ -#if defined(DUK_USE_HASHBYTES_UNALIGNED_U32_ACCESS) - duk_uint32_t k = *((const duk_uint32_t *) (const void *) data); -#else - duk_uint32_t k = ((duk_uint32_t) data[0]) | (((duk_uint32_t) data[1]) << 8) | (((duk_uint32_t) data[2]) << 16) | - (((duk_uint32_t) data[3]) << 24); -#endif - - k *= DUK__MAGIC_M; - k ^= k >> DUK__MAGIC_R; - k *= DUK__MAGIC_M; - h *= DUK__MAGIC_M; - h ^= k; - data += 4; - len -= 4; - } - - switch (len) { - case 3: - h ^= data[2] << 16; - case 2: - h ^= data[1] << 8; - case 1: - h ^= data[0]; - h *= DUK__MAGIC_M; - } - - h ^= h >> 13; - h *= DUK__MAGIC_M; - h ^= h >> 15; - - return h; -} -#endif /* DUK_USE_STRHASH_DENSE */ - -/* automatic undefs */ -#undef DUK__MAGIC_M -#undef DUK__MAGIC_R -#line 1 "duk_util_memory.c" -/* - * Memory utils. - */ - -/* #include duk_internal.h -> already included */ - -#if defined(DUK_USE_ALLOW_UNDEFINED_BEHAVIOR) -DUK_INTERNAL DUK_INLINE duk_small_int_t duk_memcmp_unsafe(const void *s1, const void *s2, duk_size_t len) { - DUK_ASSERT(s1 != NULL || len == 0U); - DUK_ASSERT(s2 != NULL || len == 0U); - return DUK_MEMCMP(s1, s2, (size_t) len); -} - -DUK_INTERNAL DUK_INLINE duk_small_int_t duk_memcmp(const void *s1, const void *s2, duk_size_t len) { - DUK_ASSERT(s1 != NULL); - DUK_ASSERT(s2 != NULL); - return DUK_MEMCMP(s1, s2, (size_t) len); -} -#else /* DUK_USE_ALLOW_UNDEFINED_BEHAVIOR */ -DUK_INTERNAL DUK_INLINE duk_small_int_t duk_memcmp_unsafe(const void *s1, const void *s2, duk_size_t len) { - DUK_ASSERT(s1 != NULL || len == 0U); - DUK_ASSERT(s2 != NULL || len == 0U); - if (DUK_UNLIKELY(len == 0U)) { - return 0; - } - DUK_ASSERT(s1 != NULL); - DUK_ASSERT(s2 != NULL); - return duk_memcmp(s1, s2, len); -} - -DUK_INTERNAL DUK_INLINE duk_small_int_t duk_memcmp(const void *s1, const void *s2, duk_size_t len) { - DUK_ASSERT(s1 != NULL); - DUK_ASSERT(s2 != NULL); - return DUK_MEMCMP(s1, s2, (size_t) len); -} -#endif /* DUK_USE_ALLOW_UNDEFINED_BEHAVIOR */ -#line 1 "duk_util_tinyrandom.c" -/* - * A tiny random number generator used for Math.random() and other internals. - * - * Default algorithm is xoroshiro128+: http://xoroshiro.di.unimi.it/xoroshiro128plus.c - * with SplitMix64 seed preparation: http://xorshift.di.unimi.it/splitmix64.c. - * - * Low memory targets and targets without 64-bit types use a slightly smaller - * (but slower) algorithm by Adi Shamir: - * http://www.woodmann.com/forum/archive/index.php/t-3100.html. - * - */ - -/* #include duk_internal.h -> already included */ - -#if !defined(DUK_USE_GET_RANDOM_DOUBLE) - -#if defined(DUK_USE_PREFER_SIZE) || !defined(DUK_USE_64BIT_OPS) -#define DUK__RANDOM_SHAMIR3OP -#else -#define DUK__RANDOM_XOROSHIRO128PLUS -#endif - -#if defined(DUK__RANDOM_SHAMIR3OP) -#define DUK__UPDATE_RND(rnd) \ - do { \ - (rnd) += ((rnd) * (rnd)) | 0x05UL; \ - (rnd) = ((rnd) &0xffffffffUL); /* if duk_uint32_t is exactly 32 bits, this is a NOP */ \ - } while (0) - -#define DUK__RND_BIT(rnd) ((rnd) >> 31) /* only use the highest bit */ - -DUK_INTERNAL void duk_util_tinyrandom_prepare_seed(duk_hthread *thr) { - DUK_UNREF(thr); /* Nothing now. */ -} - -DUK_INTERNAL duk_double_t duk_util_tinyrandom_get_double(duk_hthread *thr) { - duk_double_t t; - duk_small_int_t n; - duk_uint32_t rnd; - - rnd = thr->heap->rnd_state; - - n = 53; /* enough to cover the whole mantissa */ - t = 0.0; - - do { - DUK__UPDATE_RND(rnd); - t += DUK__RND_BIT(rnd); - t /= 2.0; - } while (--n); - - thr->heap->rnd_state = rnd; - - DUK_ASSERT(t >= (duk_double_t) 0.0); - DUK_ASSERT(t < (duk_double_t) 1.0); - - return t; -} -#endif /* DUK__RANDOM_SHAMIR3OP */ - -#if defined(DUK__RANDOM_XOROSHIRO128PLUS) -DUK_LOCAL DUK_ALWAYS_INLINE duk_uint64_t duk__rnd_splitmix64(duk_uint64_t *x) { - duk_uint64_t z; - z = (*x += DUK_U64_CONSTANT(0x9E3779B97F4A7C15)); - z = (z ^ (z >> 30U)) * DUK_U64_CONSTANT(0xBF58476D1CE4E5B9); - z = (z ^ (z >> 27U)) * DUK_U64_CONSTANT(0x94D049BB133111EB); - return z ^ (z >> 31U); -} - -DUK_LOCAL DUK_ALWAYS_INLINE duk_uint64_t duk__rnd_rotl(const duk_uint64_t x, duk_small_uint_t k) { - return (x << k) | (x >> (64U - k)); -} - -DUK_LOCAL DUK_ALWAYS_INLINE duk_uint64_t duk__xoroshiro128plus(duk_uint64_t *s) { - duk_uint64_t s0; - duk_uint64_t s1; - duk_uint64_t res; - - s0 = s[0]; - s1 = s[1]; - res = s0 + s1; - s1 ^= s0; - s[0] = duk__rnd_rotl(s0, 55) ^ s1 ^ (s1 << 14U); - s[1] = duk__rnd_rotl(s1, 36); - - return res; -} - -DUK_INTERNAL void duk_util_tinyrandom_prepare_seed(duk_hthread *thr) { - duk_small_uint_t i; - duk_uint64_t x; - - /* Mix both halves of the initial seed with SplitMix64. The intent - * is to ensure that very similar raw seeds (which is usually the case - * because current seed is Date.now()) result in different xoroshiro128+ - * seeds. - */ - x = thr->heap->rnd_state[0]; /* Only [0] is used as input here. */ - for (i = 0; i < 64; i++) { - thr->heap->rnd_state[i & 0x01] = duk__rnd_splitmix64(&x); /* Keep last 2 values. */ - } -} - -DUK_INTERNAL duk_double_t duk_util_tinyrandom_get_double(duk_hthread *thr) { - duk_uint64_t v; - duk_double_union du; - - /* For big and little endian the integer and IEEE double byte order - * is the same so a direct assignment works. For mixed endian the - * 32-bit parts must be swapped. - */ - v = (DUK_U64_CONSTANT(0x3ff) << 52U) | (duk__xoroshiro128plus((duk_uint64_t *) thr->heap->rnd_state) >> 12U); - du.ull[0] = v; -#if defined(DUK_USE_DOUBLE_ME) - do { - duk_uint32_t tmp; - tmp = du.ui[0]; - du.ui[0] = du.ui[1]; - du.ui[1] = tmp; - } while (0); -#endif - return du.d - 1.0; -} -#endif /* DUK__RANDOM_XOROSHIRO128PLUS */ - -#endif /* !DUK_USE_GET_RANDOM_DOUBLE */ - -/* automatic undefs */ -#undef DUK__RANDOM_SHAMIR3OP -#undef DUK__RANDOM_XOROSHIRO128PLUS -#undef DUK__RND_BIT -#undef DUK__UPDATE_RND diff --git a/source/engine/duktape.h b/source/engine/duktape.h deleted file mode 100644 index d1583cd..0000000 --- a/source/engine/duktape.h +++ /dev/null @@ -1,1456 +0,0 @@ -/* - * Duktape public API for Duktape 2.7.0. - * - * See the API reference for documentation on call semantics. The exposed, - * supported API is between the "BEGIN PUBLIC API" and "END PUBLIC API" - * comments. Other parts of the header are Duktape internal and related to - * e.g. platform/compiler/feature detection. - * - * Git commit 03d4d728f8365021de6955c649e6dcd05dcca99f (03d4d72-dirty). - * Git branch HEAD. - * - * See Duktape AUTHORS.rst and LICENSE.txt for copyright and - * licensing information. - */ - -/* LICENSE.txt */ -/* - * =============== - * Duktape license - * =============== - * - * (http://opensource.org/licenses/MIT) - * - * Copyright (c) 2013-present by Duktape authors (see AUTHORS.rst) - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to deal - * in the Software without restriction, including without limitation the rights - * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell - * copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE - * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, - * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN - * THE SOFTWARE. - */ - -/* AUTHORS.rst */ -/* - * =============== - * Duktape authors - * =============== - * - * Copyright - * ========= - * - * Duktape copyrights are held by its authors. Each author has a copyright - * to their contribution, and agrees to irrevocably license the contribution - * under the Duktape ``LICENSE.txt``. - * - * Authors - * ======= - * - * Please include an e-mail address, a link to your GitHub profile, or something - * similar to allow your contribution to be identified accurately. - * - * The following people have contributed code, website contents, or Wiki contents, - * and agreed to irrevocably license their contributions under the Duktape - * ``LICENSE.txt`` (in order of appearance): - * - * * Sami Vaarala - * * Niki Dobrev - * * Andreas \u00d6man - * * L\u00e1szl\u00f3 Lang\u00f3 - * * Legimet - * * Karl Skomski - * * Bruce Pascoe - * * Ren\u00e9 Hollander - * * Julien Hamaide (https://github.com/crazyjul) - * * Sebastian G\u00f6tte (https://github.com/jaseg) - * * Tomasz Magulski (https://github.com/magul) - * * \D. Bohdan (https://github.com/dbohdan) - * * Ond\u0159ej Jirman (https://github.com/megous) - * * Sa\u00fal Ibarra Corretg\u00e9 - * * Jeremy HU - * * Ole Andr\u00e9 Vadla Ravn\u00e5s (https://github.com/oleavr) - * * Harold Brenes (https://github.com/harold-b) - * * Oliver Crow (https://github.com/ocrow) - * * Jakub Ch\u0142api\u0144ski (https://github.com/jchlapinski) - * * Brett Vickers (https://github.com/beevik) - * * Dominik Okwieka (https://github.com/okitec) - * * Remko Tron\u00e7on (https://el-tramo.be) - * * Romero Malaquias (rbsm@ic.ufal.br) - * * Michael Drake - * * Steven Don (https://github.com/shdon) - * * Simon Stone (https://github.com/sstone1) - * * \J. McC. (https://github.com/jmhmccr) - * * Jakub Nowakowski (https://github.com/jimvonmoon) - * * Tommy Nguyen (https://github.com/tn0502) - * * Fabrice Fontaine (https://github.com/ffontaine) - * * Christopher Hiller (https://github.com/boneskull) - * * Gonzalo Diethelm (https://github.com/gonzus) - * * Michal Kasperek (https://github.com/michalkas) - * * Andrew Janke (https://github.com/apjanke) - * * Steve Fan (https://github.com/stevefan1999) - * * Edward Betts (https://github.com/edwardbetts) - * * Ozhan Duz (https://github.com/webfolderio) - * * Akos Kiss (https://github.com/akosthekiss) - * * TheBrokenRail (https://github.com/TheBrokenRail) - * * Jesse Doyle (https://github.com/jessedoyle) - * * Gero Kuehn (https://github.com/dc6jgk) - * * James Swift (https://github.com/phraemer) - * * Luis de Bethencourt (https://github.com/luisbg) - * * Ian Whyman (https://github.com/v00d00) - * * Rick Sayre (https://github.com/whorfin) - * * Craig Leres (https://github.com/leres) - * * Maurici Abad (https://github.com/mauriciabad) - * * Nancy Li (https://github.com/NancyLi1013) - * * William Parks (https://github.com/WilliamParks) - * * Sam Hellawell (https://github.com/samhellawell) - * * Vladislavs Sokurenko (https://github.com/sokurenko) - * - * Other contributions - * =================== - * - * The following people have contributed something other than code (e.g. reported - * bugs, provided ideas, etc; roughly in order of appearance): - * - * * Greg Burns - * * Anthony Rabine - * * Carlos Costa - * * Aur\u00e9lien Bouilland - * * Preet Desai (Pris Matic) - * * judofyr (http://www.reddit.com/user/judofyr) - * * Jason Woofenden - * * Micha\u0142 Przyby\u015b - * * Anthony Howe - * * Conrad Pankoff - * * Jim Schimpf - * * Rajaran Gaunker (https://github.com/zimbabao) - * * Andreas \u00d6man - * * Doug Sanden - * * Josh Engebretson (https://github.com/JoshEngebretson) - * * Remo Eichenberger (https://github.com/remoe) - * * Mamod Mehyar (https://github.com/mamod) - * * David Demelier (https://github.com/markand) - * * Tim Caswell (https://github.com/creationix) - * * Mitchell Blank Jr (https://github.com/mitchblank) - * * https://github.com/yushli - * * Seo Sanghyeon (https://github.com/sanxiyn) - * * Han ChoongWoo (https://github.com/tunz) - * * Joshua Peek (https://github.com/josh) - * * Bruce E. Pascoe (https://github.com/fatcerberus) - * * https://github.com/Kelledin - * * https://github.com/sstruchtrup - * * Michael Drake (https://github.com/tlsa) - * * https://github.com/chris-y - * * Laurent Zubiaur (https://github.com/lzubiaur) - * * Neil Kolban (https://github.com/nkolban) - * * Wilhelm Wanecek (https://github.com/wanecek) - * * Andrew Janke (https://github.com/apjanke) - * * Unamer (https://github.com/unamer) - * * Karl Dahlke (eklhad@gmail.com) - * - * If you are accidentally missing from this list, send me an e-mail - * (``sami.vaarala@iki.fi``) and I'll fix the omission. - */ - -#if !defined(DUKTAPE_H_INCLUDED) -#define DUKTAPE_H_INCLUDED - -#define DUK_SINGLE_FILE - -/* - * BEGIN PUBLIC API - */ - -/* - * Version and Git commit identification - */ - -/* Duktape version, (major * 10000) + (minor * 100) + patch. Allows C code - * to #if (DUK_VERSION >= NNN) against Duktape API version. The same value - * is also available to ECMAScript code in Duktape.version. Unofficial - * development snapshots have 99 for patch level (e.g. 0.10.99 would be a - * development version after 0.10.0 but before the next official release). - */ -#define DUK_VERSION 20700L - -/* Git commit, describe, and branch for Duktape build. Useful for - * non-official snapshot builds so that application code can easily log - * which Duktape snapshot was used. Not available in the ECMAScript - * environment. - */ -#define DUK_GIT_COMMIT "03d4d728f8365021de6955c649e6dcd05dcca99f" -#define DUK_GIT_DESCRIBE "03d4d72-dirty" -#define DUK_GIT_BRANCH "HEAD" - -/* External duk_config.h provides platform/compiler/OS dependent - * typedefs and macros, and DUK_USE_xxx config options so that - * the rest of Duktape doesn't need to do any feature detection. - * DUK_VERSION is defined before including so that configuration - * snippets can react to it. - */ -#include "duk_config.h" - -/* - * Avoid C++ name mangling - */ - -#if defined(__cplusplus) -extern "C" { -#endif - -/* - * Some defines forwarded from feature detection - */ - -#undef DUK_API_VARIADIC_MACROS -#if defined(DUK_USE_VARIADIC_MACROS) -#define DUK_API_VARIADIC_MACROS -#endif - -#define DUK_API_NORETURN(decl) DUK_NORETURN(decl) - -/* - * Public API specific typedefs - * - * Many types are wrapped by Duktape for portability to rare platforms - * where e.g. 'int' is a 16-bit type. See practical typing discussion - * in Duktape web documentation. - */ - -struct duk_thread_state; -struct duk_memory_functions; -struct duk_function_list_entry; -struct duk_number_list_entry; -struct duk_time_components; - -/* duk_context is now defined in duk_config.h because it may also be - * referenced there by prototypes. - */ -typedef struct duk_thread_state duk_thread_state; -typedef struct duk_memory_functions duk_memory_functions; -typedef struct duk_function_list_entry duk_function_list_entry; -typedef struct duk_number_list_entry duk_number_list_entry; -typedef struct duk_time_components duk_time_components; - -typedef duk_ret_t (*duk_c_function)(duk_context *ctx); -typedef void *(*duk_alloc_function) (void *udata, duk_size_t size); -typedef void *(*duk_realloc_function) (void *udata, void *ptr, duk_size_t size); -typedef void (*duk_free_function) (void *udata, void *ptr); -typedef void (*duk_fatal_function) (void *udata, const char *msg); -typedef void (*duk_decode_char_function) (void *udata, duk_codepoint_t codepoint); -typedef duk_codepoint_t (*duk_map_char_function) (void *udata, duk_codepoint_t codepoint); -typedef duk_ret_t (*duk_safe_call_function) (duk_context *ctx, void *udata); -typedef duk_size_t (*duk_debug_read_function) (void *udata, char *buffer, duk_size_t length); -typedef duk_size_t (*duk_debug_write_function) (void *udata, const char *buffer, duk_size_t length); -typedef duk_size_t (*duk_debug_peek_function) (void *udata); -typedef void (*duk_debug_read_flush_function) (void *udata); -typedef void (*duk_debug_write_flush_function) (void *udata); -typedef duk_idx_t (*duk_debug_request_function) (duk_context *ctx, void *udata, duk_idx_t nvalues); -typedef void (*duk_debug_detached_function) (duk_context *ctx, void *udata); - -struct duk_thread_state { - /* XXX: Enough space to hold internal suspend/resume structure. - * This is rather awkward and to be fixed when the internal - * structure is visible for the public API header. - */ - char data[128]; -}; - -struct duk_memory_functions { - duk_alloc_function alloc_func; - duk_realloc_function realloc_func; - duk_free_function free_func; - void *udata; -}; - -struct duk_function_list_entry { - const char *key; - duk_c_function value; - duk_idx_t nargs; -}; - -struct duk_number_list_entry { - const char *key; - duk_double_t value; -}; - -struct duk_time_components { - duk_double_t year; /* year, e.g. 2016, ECMAScript year range */ - duk_double_t month; /* month: 1-12 */ - duk_double_t day; /* day: 1-31 */ - duk_double_t hours; /* hour: 0-59 */ - duk_double_t minutes; /* minute: 0-59 */ - duk_double_t seconds; /* second: 0-59 (in POSIX time no leap second) */ - duk_double_t milliseconds; /* may contain sub-millisecond fractions */ - duk_double_t weekday; /* weekday: 0-6, 0=Sunday, 1=Monday, ..., 6=Saturday */ -}; - -/* - * Constants - */ - -/* Duktape debug protocol version used by this build. */ -#define DUK_DEBUG_PROTOCOL_VERSION 2 - -/* Used to represent invalid index; if caller uses this without checking, - * this index will map to a non-existent stack entry. Also used in some - * API calls as a marker to denote "no value". - */ -#define DUK_INVALID_INDEX DUK_IDX_MIN - -/* Indicates that a native function does not have a fixed number of args, - * and the argument stack should not be capped/extended at all. - */ -#define DUK_VARARGS ((duk_int_t) (-1)) - -/* Number of value stack entries (in addition to actual call arguments) - * guaranteed to be allocated on entry to a Duktape/C function. - */ -#define DUK_API_ENTRY_STACK 64U - -/* Value types, used by e.g. duk_get_type() */ -#define DUK_TYPE_MIN 0U -#define DUK_TYPE_NONE 0U /* no value, e.g. invalid index */ -#define DUK_TYPE_UNDEFINED 1U /* ECMAScript undefined */ -#define DUK_TYPE_NULL 2U /* ECMAScript null */ -#define DUK_TYPE_BOOLEAN 3U /* ECMAScript boolean: 0 or 1 */ -#define DUK_TYPE_NUMBER 4U /* ECMAScript number: double */ -#define DUK_TYPE_STRING 5U /* ECMAScript string: CESU-8 / extended UTF-8 encoded */ -#define DUK_TYPE_OBJECT 6U /* ECMAScript object: includes objects, arrays, functions, threads */ -#define DUK_TYPE_BUFFER 7U /* fixed or dynamic, garbage collected byte buffer */ -#define DUK_TYPE_POINTER 8U /* raw void pointer */ -#define DUK_TYPE_LIGHTFUNC 9U /* lightweight function pointer */ -#define DUK_TYPE_MAX 9U - -/* Value mask types, used by e.g. duk_get_type_mask() */ -#define DUK_TYPE_MASK_NONE (1U << DUK_TYPE_NONE) -#define DUK_TYPE_MASK_UNDEFINED (1U << DUK_TYPE_UNDEFINED) -#define DUK_TYPE_MASK_NULL (1U << DUK_TYPE_NULL) -#define DUK_TYPE_MASK_BOOLEAN (1U << DUK_TYPE_BOOLEAN) -#define DUK_TYPE_MASK_NUMBER (1U << DUK_TYPE_NUMBER) -#define DUK_TYPE_MASK_STRING (1U << DUK_TYPE_STRING) -#define DUK_TYPE_MASK_OBJECT (1U << DUK_TYPE_OBJECT) -#define DUK_TYPE_MASK_BUFFER (1U << DUK_TYPE_BUFFER) -#define DUK_TYPE_MASK_POINTER (1U << DUK_TYPE_POINTER) -#define DUK_TYPE_MASK_LIGHTFUNC (1U << DUK_TYPE_LIGHTFUNC) -#define DUK_TYPE_MASK_THROW (1U << 10) /* internal flag value: throw if mask doesn't match */ -#define DUK_TYPE_MASK_PROMOTE (1U << 11) /* internal flag value: promote to object if mask matches */ - -/* Coercion hints */ -#define DUK_HINT_NONE 0 /* prefer number, unless input is a Date, in which - * case prefer string (E5 Section 8.12.8) - */ -#define DUK_HINT_STRING 1 /* prefer string */ -#define DUK_HINT_NUMBER 2 /* prefer number */ - -/* Enumeration flags for duk_enum() */ -#define DUK_ENUM_INCLUDE_NONENUMERABLE (1U << 0) /* enumerate non-numerable properties in addition to enumerable */ -#define DUK_ENUM_INCLUDE_HIDDEN (1U << 1) /* enumerate hidden symbols too (in Duktape 1.x called internal properties) */ -#define DUK_ENUM_INCLUDE_SYMBOLS (1U << 2) /* enumerate symbols */ -#define DUK_ENUM_EXCLUDE_STRINGS (1U << 3) /* exclude strings */ -#define DUK_ENUM_OWN_PROPERTIES_ONLY (1U << 4) /* don't walk prototype chain, only check own properties */ -#define DUK_ENUM_ARRAY_INDICES_ONLY (1U << 5) /* only enumerate array indices */ -/* XXX: misleading name */ -#define DUK_ENUM_SORT_ARRAY_INDICES (1U << 6) /* sort array indices (applied to full enumeration result, including inherited array indices); XXX: misleading name */ -#define DUK_ENUM_NO_PROXY_BEHAVIOR (1U << 7) /* enumerate a proxy object itself without invoking proxy behavior */ - -/* Compilation flags for duk_compile() and duk_eval() */ -/* DUK_COMPILE_xxx bits 0-2 are reserved for an internal 'nargs' argument. - */ -#define DUK_COMPILE_EVAL (1U << 3) /* compile eval code (instead of global code) */ -#define DUK_COMPILE_FUNCTION (1U << 4) /* compile function code (instead of global code) */ -#define DUK_COMPILE_STRICT (1U << 5) /* use strict (outer) context for global, eval, or function code */ -#define DUK_COMPILE_SHEBANG (1U << 6) /* allow shebang ('#! ...') comment on first line of source */ -#define DUK_COMPILE_SAFE (1U << 7) /* (internal) catch compilation errors */ -#define DUK_COMPILE_NORESULT (1U << 8) /* (internal) omit eval result */ -#define DUK_COMPILE_NOSOURCE (1U << 9) /* (internal) no source string on stack */ -#define DUK_COMPILE_STRLEN (1U << 10) /* (internal) take strlen() of src_buffer (avoids double evaluation in macro) */ -#define DUK_COMPILE_NOFILENAME (1U << 11) /* (internal) no filename on stack */ -#define DUK_COMPILE_FUNCEXPR (1U << 12) /* (internal) source is a function expression (used for Function constructor) */ - -/* Flags for duk_def_prop() and its variants; base flags + a lot of convenience shorthands */ -#define DUK_DEFPROP_WRITABLE (1U << 0) /* set writable (effective if DUK_DEFPROP_HAVE_WRITABLE set) */ -#define DUK_DEFPROP_ENUMERABLE (1U << 1) /* set enumerable (effective if DUK_DEFPROP_HAVE_ENUMERABLE set) */ -#define DUK_DEFPROP_CONFIGURABLE (1U << 2) /* set configurable (effective if DUK_DEFPROP_HAVE_CONFIGURABLE set) */ -#define DUK_DEFPROP_HAVE_WRITABLE (1U << 3) /* set/clear writable */ -#define DUK_DEFPROP_HAVE_ENUMERABLE (1U << 4) /* set/clear enumerable */ -#define DUK_DEFPROP_HAVE_CONFIGURABLE (1U << 5) /* set/clear configurable */ -#define DUK_DEFPROP_HAVE_VALUE (1U << 6) /* set value (given on value stack) */ -#define DUK_DEFPROP_HAVE_GETTER (1U << 7) /* set getter (given on value stack) */ -#define DUK_DEFPROP_HAVE_SETTER (1U << 8) /* set setter (given on value stack) */ -#define DUK_DEFPROP_FORCE (1U << 9) /* force change if possible, may still fail for e.g. virtual properties */ -#define DUK_DEFPROP_SET_WRITABLE (DUK_DEFPROP_HAVE_WRITABLE | DUK_DEFPROP_WRITABLE) -#define DUK_DEFPROP_CLEAR_WRITABLE DUK_DEFPROP_HAVE_WRITABLE -#define DUK_DEFPROP_SET_ENUMERABLE (DUK_DEFPROP_HAVE_ENUMERABLE | DUK_DEFPROP_ENUMERABLE) -#define DUK_DEFPROP_CLEAR_ENUMERABLE DUK_DEFPROP_HAVE_ENUMERABLE -#define DUK_DEFPROP_SET_CONFIGURABLE (DUK_DEFPROP_HAVE_CONFIGURABLE | DUK_DEFPROP_CONFIGURABLE) -#define DUK_DEFPROP_CLEAR_CONFIGURABLE DUK_DEFPROP_HAVE_CONFIGURABLE -#define DUK_DEFPROP_W DUK_DEFPROP_WRITABLE -#define DUK_DEFPROP_E DUK_DEFPROP_ENUMERABLE -#define DUK_DEFPROP_C DUK_DEFPROP_CONFIGURABLE -#define DUK_DEFPROP_WE (DUK_DEFPROP_WRITABLE | DUK_DEFPROP_ENUMERABLE) -#define DUK_DEFPROP_WC (DUK_DEFPROP_WRITABLE | DUK_DEFPROP_CONFIGURABLE) -#define DUK_DEFPROP_EC (DUK_DEFPROP_ENUMERABLE | DUK_DEFPROP_CONFIGURABLE) -#define DUK_DEFPROP_WEC (DUK_DEFPROP_WRITABLE | DUK_DEFPROP_ENUMERABLE | DUK_DEFPROP_CONFIGURABLE) -#define DUK_DEFPROP_HAVE_W DUK_DEFPROP_HAVE_WRITABLE -#define DUK_DEFPROP_HAVE_E DUK_DEFPROP_HAVE_ENUMERABLE -#define DUK_DEFPROP_HAVE_C DUK_DEFPROP_HAVE_CONFIGURABLE -#define DUK_DEFPROP_HAVE_WE (DUK_DEFPROP_HAVE_WRITABLE | DUK_DEFPROP_HAVE_ENUMERABLE) -#define DUK_DEFPROP_HAVE_WC (DUK_DEFPROP_HAVE_WRITABLE | DUK_DEFPROP_HAVE_CONFIGURABLE) -#define DUK_DEFPROP_HAVE_EC (DUK_DEFPROP_HAVE_ENUMERABLE | DUK_DEFPROP_HAVE_CONFIGURABLE) -#define DUK_DEFPROP_HAVE_WEC (DUK_DEFPROP_HAVE_WRITABLE | DUK_DEFPROP_HAVE_ENUMERABLE | DUK_DEFPROP_HAVE_CONFIGURABLE) -#define DUK_DEFPROP_SET_W DUK_DEFPROP_SET_WRITABLE -#define DUK_DEFPROP_SET_E DUK_DEFPROP_SET_ENUMERABLE -#define DUK_DEFPROP_SET_C DUK_DEFPROP_SET_CONFIGURABLE -#define DUK_DEFPROP_SET_WE (DUK_DEFPROP_SET_WRITABLE | DUK_DEFPROP_SET_ENUMERABLE) -#define DUK_DEFPROP_SET_WC (DUK_DEFPROP_SET_WRITABLE | DUK_DEFPROP_SET_CONFIGURABLE) -#define DUK_DEFPROP_SET_EC (DUK_DEFPROP_SET_ENUMERABLE | DUK_DEFPROP_SET_CONFIGURABLE) -#define DUK_DEFPROP_SET_WEC (DUK_DEFPROP_SET_WRITABLE | DUK_DEFPROP_SET_ENUMERABLE | DUK_DEFPROP_SET_CONFIGURABLE) -#define DUK_DEFPROP_CLEAR_W DUK_DEFPROP_CLEAR_WRITABLE -#define DUK_DEFPROP_CLEAR_E DUK_DEFPROP_CLEAR_ENUMERABLE -#define DUK_DEFPROP_CLEAR_C DUK_DEFPROP_CLEAR_CONFIGURABLE -#define DUK_DEFPROP_CLEAR_WE (DUK_DEFPROP_CLEAR_WRITABLE | DUK_DEFPROP_CLEAR_ENUMERABLE) -#define DUK_DEFPROP_CLEAR_WC (DUK_DEFPROP_CLEAR_WRITABLE | DUK_DEFPROP_CLEAR_CONFIGURABLE) -#define DUK_DEFPROP_CLEAR_EC (DUK_DEFPROP_CLEAR_ENUMERABLE | DUK_DEFPROP_CLEAR_CONFIGURABLE) -#define DUK_DEFPROP_CLEAR_WEC (DUK_DEFPROP_CLEAR_WRITABLE | DUK_DEFPROP_CLEAR_ENUMERABLE | DUK_DEFPROP_CLEAR_CONFIGURABLE) -#define DUK_DEFPROP_ATTR_W (DUK_DEFPROP_HAVE_WEC | DUK_DEFPROP_W) -#define DUK_DEFPROP_ATTR_E (DUK_DEFPROP_HAVE_WEC | DUK_DEFPROP_E) -#define DUK_DEFPROP_ATTR_C (DUK_DEFPROP_HAVE_WEC | DUK_DEFPROP_C) -#define DUK_DEFPROP_ATTR_WE (DUK_DEFPROP_HAVE_WEC | DUK_DEFPROP_WE) -#define DUK_DEFPROP_ATTR_WC (DUK_DEFPROP_HAVE_WEC | DUK_DEFPROP_WC) -#define DUK_DEFPROP_ATTR_EC (DUK_DEFPROP_HAVE_WEC | DUK_DEFPROP_EC) -#define DUK_DEFPROP_ATTR_WEC (DUK_DEFPROP_HAVE_WEC | DUK_DEFPROP_WEC) - -/* Flags for duk_push_thread_raw() */ -#define DUK_THREAD_NEW_GLOBAL_ENV (1U << 0) /* create a new global environment */ - -/* Flags for duk_gc() */ -#define DUK_GC_COMPACT (1U << 0) /* compact heap objects */ - -/* Error codes (must be 8 bits at most, see duk_error.h) */ -#define DUK_ERR_NONE 0 /* no error (e.g. from duk_get_error_code()) */ -#define DUK_ERR_ERROR 1 /* Error */ -#define DUK_ERR_EVAL_ERROR 2 /* EvalError */ -#define DUK_ERR_RANGE_ERROR 3 /* RangeError */ -#define DUK_ERR_REFERENCE_ERROR 4 /* ReferenceError */ -#define DUK_ERR_SYNTAX_ERROR 5 /* SyntaxError */ -#define DUK_ERR_TYPE_ERROR 6 /* TypeError */ -#define DUK_ERR_URI_ERROR 7 /* URIError */ - -/* Return codes for C functions (shortcut for throwing an error) */ -#define DUK_RET_ERROR (-DUK_ERR_ERROR) -#define DUK_RET_EVAL_ERROR (-DUK_ERR_EVAL_ERROR) -#define DUK_RET_RANGE_ERROR (-DUK_ERR_RANGE_ERROR) -#define DUK_RET_REFERENCE_ERROR (-DUK_ERR_REFERENCE_ERROR) -#define DUK_RET_SYNTAX_ERROR (-DUK_ERR_SYNTAX_ERROR) -#define DUK_RET_TYPE_ERROR (-DUK_ERR_TYPE_ERROR) -#define DUK_RET_URI_ERROR (-DUK_ERR_URI_ERROR) - -/* Return codes for protected calls (duk_safe_call(), duk_pcall()) */ -#define DUK_EXEC_SUCCESS 0 -#define DUK_EXEC_ERROR 1 - -/* Debug levels for DUK_USE_DEBUG_WRITE(). */ -#define DUK_LEVEL_DEBUG 0 -#define DUK_LEVEL_DDEBUG 1 -#define DUK_LEVEL_DDDEBUG 2 - -/* - * Macros to create Symbols as C statically constructed strings. - * - * Call e.g. as DUK_HIDDEN_SYMBOL("myProperty") <=> ("\xFF" "myProperty"). - * - * Local symbols have a unique suffix, caller should take care to avoid - * conflicting with the Duktape internal representation by e.g. prepending - * a '!' character: DUK_LOCAL_SYMBOL("myLocal", "!123"). - * - * Note that these can only be used for string constants, not dynamically - * created strings. - * - * You shouldn't normally use DUK_INTERNAL_SYMBOL() at all. It is reserved - * for Duktape internal symbols only. There are no versioning guarantees - * for internal symbols. - */ - -#define DUK_HIDDEN_SYMBOL(x) ("\xFF" x) -#define DUK_GLOBAL_SYMBOL(x) ("\x80" x) -#define DUK_LOCAL_SYMBOL(x,uniq) ("\x81" x "\xff" uniq) -#define DUK_WELLKNOWN_SYMBOL(x) ("\x81" x "\xff") -#define DUK_INTERNAL_SYMBOL(x) ("\x82" x) - -/* - * If no variadic macros, __FILE__ and __LINE__ are passed through globals - * which is ugly and not thread safe. - */ - -#if !defined(DUK_API_VARIADIC_MACROS) -DUK_EXTERNAL_DECL const char *duk_api_global_filename; -DUK_EXTERNAL_DECL duk_int_t duk_api_global_line; -#endif - -/* - * Context management - */ - -DUK_EXTERNAL_DECL -duk_context *duk_create_heap(duk_alloc_function alloc_func, - duk_realloc_function realloc_func, - duk_free_function free_func, - void *heap_udata, - duk_fatal_function fatal_handler); -DUK_EXTERNAL_DECL void duk_destroy_heap(duk_context *ctx); - -DUK_EXTERNAL_DECL void duk_suspend(duk_context *ctx, duk_thread_state *state); -DUK_EXTERNAL_DECL void duk_resume(duk_context *ctx, const duk_thread_state *state); - -#define duk_create_heap_default() \ - duk_create_heap(NULL, NULL, NULL, NULL, NULL) - -/* - * Memory management - * - * Raw functions have no side effects (cannot trigger GC). - */ - -DUK_EXTERNAL_DECL void *duk_alloc_raw(duk_context *ctx, duk_size_t size); -DUK_EXTERNAL_DECL void duk_free_raw(duk_context *ctx, void *ptr); -DUK_EXTERNAL_DECL void *duk_realloc_raw(duk_context *ctx, void *ptr, duk_size_t size); -DUK_EXTERNAL_DECL void *duk_alloc(duk_context *ctx, duk_size_t size); -DUK_EXTERNAL_DECL void duk_free(duk_context *ctx, void *ptr); -DUK_EXTERNAL_DECL void *duk_realloc(duk_context *ctx, void *ptr, duk_size_t size); -DUK_EXTERNAL_DECL void duk_get_memory_functions(duk_context *ctx, duk_memory_functions *out_funcs); -DUK_EXTERNAL_DECL void duk_gc(duk_context *ctx, duk_uint_t flags); - -/* - * Error handling - */ - -DUK_API_NORETURN(DUK_EXTERNAL_DECL void duk_throw_raw(duk_context *ctx)); -#define duk_throw(ctx) \ - (duk_throw_raw((ctx)), (duk_ret_t) 0) -DUK_API_NORETURN(DUK_EXTERNAL_DECL void duk_fatal_raw(duk_context *ctx, const char *err_msg)); -#define duk_fatal(ctx,err_msg) \ - (duk_fatal_raw((ctx), (err_msg)), (duk_ret_t) 0) -DUK_API_NORETURN(DUK_EXTERNAL_DECL void duk_error_raw(duk_context *ctx, duk_errcode_t err_code, const char *filename, duk_int_t line, const char *fmt, ...)); - -#if defined(DUK_API_VARIADIC_MACROS) -#define duk_error(ctx,err_code,...) \ - (duk_error_raw((ctx), (duk_errcode_t) (err_code), (const char *) (DUK_FILE_MACRO), (duk_int_t) (DUK_LINE_MACRO), __VA_ARGS__), (duk_ret_t) 0) -#define duk_generic_error(ctx,...) \ - (duk_error_raw((ctx), (duk_errcode_t) DUK_ERR_ERROR, (const char *) (DUK_FILE_MACRO), (duk_int_t) (DUK_LINE_MACRO), __VA_ARGS__), (duk_ret_t) 0) -#define duk_eval_error(ctx,...) \ - (duk_error_raw((ctx), (duk_errcode_t) DUK_ERR_EVAL_ERROR, (const char *) (DUK_FILE_MACRO), (duk_int_t) (DUK_LINE_MACRO), __VA_ARGS__), (duk_ret_t) 0) -#define duk_range_error(ctx,...) \ - (duk_error_raw((ctx), (duk_errcode_t) DUK_ERR_RANGE_ERROR, (const char *) (DUK_FILE_MACRO), (duk_int_t) (DUK_LINE_MACRO), __VA_ARGS__), (duk_ret_t) 0) -#define duk_reference_error(ctx,...) \ - (duk_error_raw((ctx), (duk_errcode_t) DUK_ERR_REFERENCE_ERROR, (const char *) (DUK_FILE_MACRO), (duk_int_t) (DUK_LINE_MACRO), __VA_ARGS__), (duk_ret_t) 0) -#define duk_syntax_error(ctx,...) \ - (duk_error_raw((ctx), (duk_errcode_t) DUK_ERR_SYNTAX_ERROR, (const char *) (DUK_FILE_MACRO), (duk_int_t) (DUK_LINE_MACRO), __VA_ARGS__), (duk_ret_t) 0) -#define duk_type_error(ctx,...) \ - (duk_error_raw((ctx), (duk_errcode_t) DUK_ERR_TYPE_ERROR, (const char *) (DUK_FILE_MACRO), (duk_int_t) (DUK_LINE_MACRO), __VA_ARGS__), (duk_ret_t) 0) -#define duk_uri_error(ctx,...) \ - (duk_error_raw((ctx), (duk_errcode_t) DUK_ERR_URI_ERROR, (const char *) (DUK_FILE_MACRO), (duk_int_t) (DUK_LINE_MACRO), __VA_ARGS__), (duk_ret_t) 0) -#else /* DUK_API_VARIADIC_MACROS */ -/* For legacy compilers without variadic macros a macro hack is used to allow - * variable arguments. While the macro allows "return duk_error(...)", it - * will fail with e.g. "(void) duk_error(...)". The calls are noreturn but - * with a return value to allow the "return duk_error(...)" idiom. This may - * cause some compiler warnings, but without noreturn the generated code is - * often worse. The same approach as with variadic macros (using - * "(duk_error(...), 0)") won't work due to the macro hack structure. - */ -DUK_API_NORETURN(DUK_EXTERNAL_DECL duk_ret_t duk_error_stash(duk_context *ctx, duk_errcode_t err_code, const char *fmt, ...)); -DUK_API_NORETURN(DUK_EXTERNAL_DECL duk_ret_t duk_generic_error_stash(duk_context *ctx, const char *fmt, ...)); -DUK_API_NORETURN(DUK_EXTERNAL_DECL duk_ret_t duk_eval_error_stash(duk_context *ctx, const char *fmt, ...)); -DUK_API_NORETURN(DUK_EXTERNAL_DECL duk_ret_t duk_range_error_stash(duk_context *ctx, const char *fmt, ...)); -DUK_API_NORETURN(DUK_EXTERNAL_DECL duk_ret_t duk_reference_error_stash(duk_context *ctx, const char *fmt, ...)); -DUK_API_NORETURN(DUK_EXTERNAL_DECL duk_ret_t duk_syntax_error_stash(duk_context *ctx, const char *fmt, ...)); -DUK_API_NORETURN(DUK_EXTERNAL_DECL duk_ret_t duk_type_error_stash(duk_context *ctx, const char *fmt, ...)); -DUK_API_NORETURN(DUK_EXTERNAL_DECL duk_ret_t duk_uri_error_stash(duk_context *ctx, const char *fmt, ...)); -#define duk_error \ - (duk_api_global_filename = (const char *) (DUK_FILE_MACRO), \ - duk_api_global_line = (duk_int_t) (DUK_LINE_MACRO), \ - duk_error_stash) /* last value is func pointer, arguments follow in parens */ -#define duk_generic_error \ - (duk_api_global_filename = (const char *) (DUK_FILE_MACRO), \ - duk_api_global_line = (duk_int_t) (DUK_LINE_MACRO), \ - duk_generic_error_stash) -#define duk_eval_error \ - (duk_api_global_filename = (const char *) (DUK_FILE_MACRO), \ - duk_api_global_line = (duk_int_t) (DUK_LINE_MACRO), \ - duk_eval_error_stash) -#define duk_range_error \ - (duk_api_global_filename = (const char *) (DUK_FILE_MACRO), \ - duk_api_global_line = (duk_int_t) (DUK_LINE_MACRO), \ - duk_range_error_stash) -#define duk_reference_error \ - (duk_api_global_filename = (const char *) (DUK_FILE_MACRO), \ - duk_api_global_line = (duk_int_t) (DUK_LINE_MACRO), \ - duk_reference_error_stash) -#define duk_syntax_error \ - (duk_api_global_filename = (const char *) (DUK_FILE_MACRO), \ - duk_api_global_line = (duk_int_t) (DUK_LINE_MACRO), \ - duk_syntax_error_stash) -#define duk_type_error \ - (duk_api_global_filename = (const char *) (DUK_FILE_MACRO), \ - duk_api_global_line = (duk_int_t) (DUK_LINE_MACRO), \ - duk_type_error_stash) -#define duk_uri_error \ - (duk_api_global_filename = (const char *) (DUK_FILE_MACRO), \ - duk_api_global_line = (duk_int_t) (DUK_LINE_MACRO), \ - duk_uri_error_stash) -#endif /* DUK_API_VARIADIC_MACROS */ - -DUK_API_NORETURN(DUK_EXTERNAL_DECL void duk_error_va_raw(duk_context *ctx, duk_errcode_t err_code, const char *filename, duk_int_t line, const char *fmt, va_list ap)); - -#define duk_error_va(ctx,err_code,fmt,ap) \ - (duk_error_va_raw((ctx), (duk_errcode_t) (err_code), (const char *) (DUK_FILE_MACRO), (duk_int_t) (DUK_LINE_MACRO), (fmt), (ap)), (duk_ret_t) 0) -#define duk_generic_error_va(ctx,fmt,ap) \ - (duk_error_va_raw((ctx), (duk_errcode_t) DUK_ERR_ERROR, (const char *) (DUK_FILE_MACRO), (duk_int_t) (DUK_LINE_MACRO), (fmt), (ap)), (duk_ret_t) 0) -#define duk_eval_error_va(ctx,fmt,ap) \ - (duk_error_va_raw((ctx), (duk_errcode_t) DUK_ERR_EVAL_ERROR, (const char *) (DUK_FILE_MACRO), (duk_int_t) (DUK_LINE_MACRO), (fmt), (ap)), (duk_ret_t) 0) -#define duk_range_error_va(ctx,fmt,ap) \ - (duk_error_va_raw((ctx), (duk_errcode_t) DUK_ERR_RANGE_ERROR, (const char *) (DUK_FILE_MACRO), (duk_int_t) (DUK_LINE_MACRO), (fmt), (ap)), (duk_ret_t) 0) -#define duk_reference_error_va(ctx,fmt,ap) \ - (duk_error_va_raw((ctx), (duk_errcode_t) DUK_ERR_REFERENCE_ERROR, (const char *) (DUK_FILE_MACRO), (duk_int_t) (DUK_LINE_MACRO), (fmt), (ap)), (duk_ret_t) 0) -#define duk_syntax_error_va(ctx,fmt,ap) \ - (duk_error_va_raw((ctx), (duk_errcode_t) DUK_ERR_SYNTAX_ERROR, (const char *) (DUK_FILE_MACRO), (duk_int_t) (DUK_LINE_MACRO), (fmt), (ap)), (duk_ret_t) 0) -#define duk_type_error_va(ctx,fmt,ap) \ - (duk_error_va_raw((ctx), (duk_errcode_t) DUK_ERR_TYPE_ERROR, (const char *) (DUK_FILE_MACRO), (duk_int_t) (DUK_LINE_MACRO), (fmt), (ap)), (duk_ret_t) 0) -#define duk_uri_error_va(ctx,fmt,ap) \ - (duk_error_va_raw((ctx), (duk_errcode_t) DUK_ERR_URI_ERROR, (const char *) (DUK_FILE_MACRO), (duk_int_t) (DUK_LINE_MACRO), (fmt), (ap)), (duk_ret_t) 0) - -/* - * Other state related functions - */ - -DUK_EXTERNAL_DECL duk_bool_t duk_is_strict_call(duk_context *ctx); -DUK_EXTERNAL_DECL duk_bool_t duk_is_constructor_call(duk_context *ctx); - -/* - * Stack management - */ - -DUK_EXTERNAL_DECL duk_idx_t duk_normalize_index(duk_context *ctx, duk_idx_t idx); -DUK_EXTERNAL_DECL duk_idx_t duk_require_normalize_index(duk_context *ctx, duk_idx_t idx); -DUK_EXTERNAL_DECL duk_bool_t duk_is_valid_index(duk_context *ctx, duk_idx_t idx); -DUK_EXTERNAL_DECL void duk_require_valid_index(duk_context *ctx, duk_idx_t idx); - -DUK_EXTERNAL_DECL duk_idx_t duk_get_top(duk_context *ctx); -DUK_EXTERNAL_DECL void duk_set_top(duk_context *ctx, duk_idx_t idx); -DUK_EXTERNAL_DECL duk_idx_t duk_get_top_index(duk_context *ctx); -DUK_EXTERNAL_DECL duk_idx_t duk_require_top_index(duk_context *ctx); - -/* Although extra/top could be an unsigned type here, using a signed type - * makes the API more robust to calling code calculation errors or corner - * cases (where caller might occasionally come up with negative values). - * Negative values are treated as zero, which is better than casting them - * to a large unsigned number. (This principle is used elsewhere in the - * API too.) - */ -DUK_EXTERNAL_DECL duk_bool_t duk_check_stack(duk_context *ctx, duk_idx_t extra); -DUK_EXTERNAL_DECL void duk_require_stack(duk_context *ctx, duk_idx_t extra); -DUK_EXTERNAL_DECL duk_bool_t duk_check_stack_top(duk_context *ctx, duk_idx_t top); -DUK_EXTERNAL_DECL void duk_require_stack_top(duk_context *ctx, duk_idx_t top); - -/* - * Stack manipulation (other than push/pop) - */ - -DUK_EXTERNAL_DECL void duk_swap(duk_context *ctx, duk_idx_t idx1, duk_idx_t idx2); -DUK_EXTERNAL_DECL void duk_swap_top(duk_context *ctx, duk_idx_t idx); -DUK_EXTERNAL_DECL void duk_dup(duk_context *ctx, duk_idx_t from_idx); -DUK_EXTERNAL_DECL void duk_dup_top(duk_context *ctx); -DUK_EXTERNAL_DECL void duk_insert(duk_context *ctx, duk_idx_t to_idx); -DUK_EXTERNAL_DECL void duk_pull(duk_context *ctx, duk_idx_t from_idx); -DUK_EXTERNAL_DECL void duk_replace(duk_context *ctx, duk_idx_t to_idx); -DUK_EXTERNAL_DECL void duk_copy(duk_context *ctx, duk_idx_t from_idx, duk_idx_t to_idx); -DUK_EXTERNAL_DECL void duk_remove(duk_context *ctx, duk_idx_t idx); -DUK_EXTERNAL_DECL void duk_xcopymove_raw(duk_context *to_ctx, duk_context *from_ctx, duk_idx_t count, duk_bool_t is_copy); - -#define duk_xmove_top(to_ctx,from_ctx,count) \ - duk_xcopymove_raw((to_ctx), (from_ctx), (count), 0 /*is_copy*/) -#define duk_xcopy_top(to_ctx,from_ctx,count) \ - duk_xcopymove_raw((to_ctx), (from_ctx), (count), 1 /*is_copy*/) - -/* - * Push operations - * - * Push functions return the absolute (relative to bottom of frame) - * position of the pushed value for convenience. - * - * Note: duk_dup() is technically a push. - */ - -DUK_EXTERNAL_DECL void duk_push_undefined(duk_context *ctx); -DUK_EXTERNAL_DECL void duk_push_null(duk_context *ctx); -DUK_EXTERNAL_DECL void duk_push_boolean(duk_context *ctx, duk_bool_t val); -DUK_EXTERNAL_DECL void duk_push_true(duk_context *ctx); -DUK_EXTERNAL_DECL void duk_push_false(duk_context *ctx); -DUK_EXTERNAL_DECL void duk_push_number(duk_context *ctx, duk_double_t val); -DUK_EXTERNAL_DECL void duk_push_nan(duk_context *ctx); -DUK_EXTERNAL_DECL void duk_push_int(duk_context *ctx, duk_int_t val); -DUK_EXTERNAL_DECL void duk_push_uint(duk_context *ctx, duk_uint_t val); -DUK_EXTERNAL_DECL const char *duk_push_string(duk_context *ctx, const char *str); -DUK_EXTERNAL_DECL const char *duk_push_lstring(duk_context *ctx, const char *str, duk_size_t len); -DUK_EXTERNAL_DECL void duk_push_pointer(duk_context *ctx, void *p); -DUK_EXTERNAL_DECL const char *duk_push_sprintf(duk_context *ctx, const char *fmt, ...); -DUK_EXTERNAL_DECL const char *duk_push_vsprintf(duk_context *ctx, const char *fmt, va_list ap); - -/* duk_push_literal() may evaluate its argument (a C string literal) more than - * once on purpose. When speed is preferred, sizeof() avoids an unnecessary - * strlen() at runtime. Sizeof("foo") == 4, so subtract 1. The argument - * must be non-NULL and should not contain internal NUL characters as the - * behavior will then depend on config options. - */ -#if defined(DUK_USE_PREFER_SIZE) -#define duk_push_literal(ctx,cstring) duk_push_string((ctx), (cstring)) -#else -DUK_EXTERNAL_DECL const char *duk_push_literal_raw(duk_context *ctx, const char *str, duk_size_t len); -#define duk_push_literal(ctx,cstring) duk_push_literal_raw((ctx), (cstring), sizeof((cstring)) - 1U) -#endif - -DUK_EXTERNAL_DECL void duk_push_this(duk_context *ctx); -DUK_EXTERNAL_DECL void duk_push_new_target(duk_context *ctx); -DUK_EXTERNAL_DECL void duk_push_current_function(duk_context *ctx); -DUK_EXTERNAL_DECL void duk_push_current_thread(duk_context *ctx); -DUK_EXTERNAL_DECL void duk_push_global_object(duk_context *ctx); -DUK_EXTERNAL_DECL void duk_push_heap_stash(duk_context *ctx); -DUK_EXTERNAL_DECL void duk_push_global_stash(duk_context *ctx); -DUK_EXTERNAL_DECL void duk_push_thread_stash(duk_context *ctx, duk_context *target_ctx); - -DUK_EXTERNAL_DECL duk_idx_t duk_push_object(duk_context *ctx); -DUK_EXTERNAL_DECL duk_idx_t duk_push_bare_object(duk_context *ctx); -DUK_EXTERNAL_DECL duk_idx_t duk_push_array(duk_context *ctx); -DUK_EXTERNAL_DECL duk_idx_t duk_push_bare_array(duk_context *ctx); -DUK_EXTERNAL_DECL duk_idx_t duk_push_c_function(duk_context *ctx, duk_c_function func, duk_idx_t nargs); -DUK_EXTERNAL_DECL duk_idx_t duk_push_c_lightfunc(duk_context *ctx, duk_c_function func, duk_idx_t nargs, duk_idx_t length, duk_int_t magic); -DUK_EXTERNAL_DECL duk_idx_t duk_push_thread_raw(duk_context *ctx, duk_uint_t flags); -DUK_EXTERNAL_DECL duk_idx_t duk_push_proxy(duk_context *ctx, duk_uint_t proxy_flags); - -#define duk_push_thread(ctx) \ - duk_push_thread_raw((ctx), 0 /*flags*/) - -#define duk_push_thread_new_globalenv(ctx) \ - duk_push_thread_raw((ctx), DUK_THREAD_NEW_GLOBAL_ENV /*flags*/) - -DUK_EXTERNAL_DECL duk_idx_t duk_push_error_object_raw(duk_context *ctx, duk_errcode_t err_code, const char *filename, duk_int_t line, const char *fmt, ...); - -#if defined(DUK_API_VARIADIC_MACROS) -#define duk_push_error_object(ctx,err_code,...) \ - duk_push_error_object_raw((ctx), (err_code), (const char *) (DUK_FILE_MACRO), (duk_int_t) (DUK_LINE_MACRO), __VA_ARGS__) -#else -DUK_EXTERNAL_DECL duk_idx_t duk_push_error_object_stash(duk_context *ctx, duk_errcode_t err_code, const char *fmt, ...); -/* Note: parentheses are required so that the comma expression works in assignments. */ -#define duk_push_error_object \ - (duk_api_global_filename = (const char *) (DUK_FILE_MACRO), \ - duk_api_global_line = (duk_int_t) (DUK_LINE_MACRO), \ - duk_push_error_object_stash) /* last value is func pointer, arguments follow in parens */ -#endif - -DUK_EXTERNAL_DECL duk_idx_t duk_push_error_object_va_raw(duk_context *ctx, duk_errcode_t err_code, const char *filename, duk_int_t line, const char *fmt, va_list ap); -#define duk_push_error_object_va(ctx,err_code,fmt,ap) \ - duk_push_error_object_va_raw((ctx), (err_code), (const char *) (DUK_FILE_MACRO), (duk_int_t) (DUK_LINE_MACRO), (fmt), (ap)) - -#define DUK_BUF_FLAG_DYNAMIC (1 << 0) /* internal flag: dynamic buffer */ -#define DUK_BUF_FLAG_EXTERNAL (1 << 1) /* internal flag: external buffer */ -#define DUK_BUF_FLAG_NOZERO (1 << 2) /* internal flag: don't zero allocated buffer */ - -DUK_EXTERNAL_DECL void *duk_push_buffer_raw(duk_context *ctx, duk_size_t size, duk_small_uint_t flags); - -#define duk_push_buffer(ctx,size,dynamic) \ - duk_push_buffer_raw((ctx), (size), (dynamic) ? DUK_BUF_FLAG_DYNAMIC : 0) -#define duk_push_fixed_buffer(ctx,size) \ - duk_push_buffer_raw((ctx), (size), 0 /*flags*/) -#define duk_push_dynamic_buffer(ctx,size) \ - duk_push_buffer_raw((ctx), (size), DUK_BUF_FLAG_DYNAMIC /*flags*/) -#define duk_push_external_buffer(ctx) \ - ((void) duk_push_buffer_raw((ctx), 0, DUK_BUF_FLAG_DYNAMIC | DUK_BUF_FLAG_EXTERNAL)) - -#define DUK_BUFOBJ_ARRAYBUFFER 0 -#define DUK_BUFOBJ_NODEJS_BUFFER 1 -#define DUK_BUFOBJ_DATAVIEW 2 -#define DUK_BUFOBJ_INT8ARRAY 3 -#define DUK_BUFOBJ_UINT8ARRAY 4 -#define DUK_BUFOBJ_UINT8CLAMPEDARRAY 5 -#define DUK_BUFOBJ_INT16ARRAY 6 -#define DUK_BUFOBJ_UINT16ARRAY 7 -#define DUK_BUFOBJ_INT32ARRAY 8 -#define DUK_BUFOBJ_UINT32ARRAY 9 -#define DUK_BUFOBJ_FLOAT32ARRAY 10 -#define DUK_BUFOBJ_FLOAT64ARRAY 11 - -DUK_EXTERNAL_DECL void duk_push_buffer_object(duk_context *ctx, duk_idx_t idx_buffer, duk_size_t byte_offset, duk_size_t byte_length, duk_uint_t flags); - -DUK_EXTERNAL_DECL duk_idx_t duk_push_heapptr(duk_context *ctx, void *ptr); - -/* - * Pop operations - */ - -DUK_EXTERNAL_DECL void duk_pop(duk_context *ctx); -DUK_EXTERNAL_DECL void duk_pop_n(duk_context *ctx, duk_idx_t count); -DUK_EXTERNAL_DECL void duk_pop_2(duk_context *ctx); -DUK_EXTERNAL_DECL void duk_pop_3(duk_context *ctx); - -/* - * Type checks - * - * duk_is_none(), which would indicate whether index it outside of stack, - * is not needed; duk_is_valid_index() gives the same information. - */ - -DUK_EXTERNAL_DECL duk_int_t duk_get_type(duk_context *ctx, duk_idx_t idx); -DUK_EXTERNAL_DECL duk_bool_t duk_check_type(duk_context *ctx, duk_idx_t idx, duk_int_t type); -DUK_EXTERNAL_DECL duk_uint_t duk_get_type_mask(duk_context *ctx, duk_idx_t idx); -DUK_EXTERNAL_DECL duk_bool_t duk_check_type_mask(duk_context *ctx, duk_idx_t idx, duk_uint_t mask); - -DUK_EXTERNAL_DECL duk_bool_t duk_is_undefined(duk_context *ctx, duk_idx_t idx); -DUK_EXTERNAL_DECL duk_bool_t duk_is_null(duk_context *ctx, duk_idx_t idx); -#define duk_is_null_or_undefined(ctx, idx) \ - ((duk_get_type_mask((ctx), (idx)) & (DUK_TYPE_MASK_NULL | DUK_TYPE_MASK_UNDEFINED)) ? 1 : 0) - -DUK_EXTERNAL_DECL duk_bool_t duk_is_boolean(duk_context *ctx, duk_idx_t idx); -DUK_EXTERNAL_DECL duk_bool_t duk_is_number(duk_context *ctx, duk_idx_t idx); -DUK_EXTERNAL_DECL duk_bool_t duk_is_nan(duk_context *ctx, duk_idx_t idx); -DUK_EXTERNAL_DECL duk_bool_t duk_is_string(duk_context *ctx, duk_idx_t idx); -DUK_EXTERNAL_DECL duk_bool_t duk_is_object(duk_context *ctx, duk_idx_t idx); -DUK_EXTERNAL_DECL duk_bool_t duk_is_buffer(duk_context *ctx, duk_idx_t idx); -DUK_EXTERNAL_DECL duk_bool_t duk_is_buffer_data(duk_context *ctx, duk_idx_t idx); -DUK_EXTERNAL_DECL duk_bool_t duk_is_pointer(duk_context *ctx, duk_idx_t idx); -DUK_EXTERNAL_DECL duk_bool_t duk_is_lightfunc(duk_context *ctx, duk_idx_t idx); - -DUK_EXTERNAL_DECL duk_bool_t duk_is_symbol(duk_context *ctx, duk_idx_t idx); -DUK_EXTERNAL_DECL duk_bool_t duk_is_array(duk_context *ctx, duk_idx_t idx); -DUK_EXTERNAL_DECL duk_bool_t duk_is_function(duk_context *ctx, duk_idx_t idx); -DUK_EXTERNAL_DECL duk_bool_t duk_is_c_function(duk_context *ctx, duk_idx_t idx); -DUK_EXTERNAL_DECL duk_bool_t duk_is_ecmascript_function(duk_context *ctx, duk_idx_t idx); -DUK_EXTERNAL_DECL duk_bool_t duk_is_bound_function(duk_context *ctx, duk_idx_t idx); -DUK_EXTERNAL_DECL duk_bool_t duk_is_thread(duk_context *ctx, duk_idx_t idx); - -#define duk_is_callable(ctx,idx) \ - duk_is_function((ctx), (idx)) -DUK_EXTERNAL_DECL duk_bool_t duk_is_constructable(duk_context *ctx, duk_idx_t idx); - -DUK_EXTERNAL_DECL duk_bool_t duk_is_dynamic_buffer(duk_context *ctx, duk_idx_t idx); -DUK_EXTERNAL_DECL duk_bool_t duk_is_fixed_buffer(duk_context *ctx, duk_idx_t idx); -DUK_EXTERNAL_DECL duk_bool_t duk_is_external_buffer(duk_context *ctx, duk_idx_t idx); - -/* Buffers and lightfuncs are not considered primitive because they mimic - * objects and e.g. duk_to_primitive() will coerce them instead of returning - * them as is. Symbols are represented as strings internally. - */ -#define duk_is_primitive(ctx,idx) \ - duk_check_type_mask((ctx), (idx), DUK_TYPE_MASK_UNDEFINED | \ - DUK_TYPE_MASK_NULL | \ - DUK_TYPE_MASK_BOOLEAN | \ - DUK_TYPE_MASK_NUMBER | \ - DUK_TYPE_MASK_STRING | \ - DUK_TYPE_MASK_POINTER) - -/* Symbols are object coercible, covered by DUK_TYPE_MASK_STRING. */ -#define duk_is_object_coercible(ctx,idx) \ - duk_check_type_mask((ctx), (idx), DUK_TYPE_MASK_BOOLEAN | \ - DUK_TYPE_MASK_NUMBER | \ - DUK_TYPE_MASK_STRING | \ - DUK_TYPE_MASK_OBJECT | \ - DUK_TYPE_MASK_BUFFER | \ - DUK_TYPE_MASK_POINTER | \ - DUK_TYPE_MASK_LIGHTFUNC) - -DUK_EXTERNAL_DECL duk_errcode_t duk_get_error_code(duk_context *ctx, duk_idx_t idx); -#define duk_is_error(ctx,idx) \ - (duk_get_error_code((ctx), (idx)) != 0) -#define duk_is_eval_error(ctx,idx) \ - (duk_get_error_code((ctx), (idx)) == DUK_ERR_EVAL_ERROR) -#define duk_is_range_error(ctx,idx) \ - (duk_get_error_code((ctx), (idx)) == DUK_ERR_RANGE_ERROR) -#define duk_is_reference_error(ctx,idx) \ - (duk_get_error_code((ctx), (idx)) == DUK_ERR_REFERENCE_ERROR) -#define duk_is_syntax_error(ctx,idx) \ - (duk_get_error_code((ctx), (idx)) == DUK_ERR_SYNTAX_ERROR) -#define duk_is_type_error(ctx,idx) \ - (duk_get_error_code((ctx), (idx)) == DUK_ERR_TYPE_ERROR) -#define duk_is_uri_error(ctx,idx) \ - (duk_get_error_code((ctx), (idx)) == DUK_ERR_URI_ERROR) - -/* - * Get operations: no coercion, returns default value for invalid - * indices and invalid value types. - * - * duk_get_undefined() and duk_get_null() would be pointless and - * are not included. - */ - -DUK_EXTERNAL_DECL duk_bool_t duk_get_boolean(duk_context *ctx, duk_idx_t idx); -DUK_EXTERNAL_DECL duk_double_t duk_get_number(duk_context *ctx, duk_idx_t idx); -DUK_EXTERNAL_DECL duk_int_t duk_get_int(duk_context *ctx, duk_idx_t idx); -DUK_EXTERNAL_DECL duk_uint_t duk_get_uint(duk_context *ctx, duk_idx_t idx); -DUK_EXTERNAL_DECL const char *duk_get_string(duk_context *ctx, duk_idx_t idx); -DUK_EXTERNAL_DECL const char *duk_get_lstring(duk_context *ctx, duk_idx_t idx, duk_size_t *out_len); -DUK_EXTERNAL_DECL void *duk_get_buffer(duk_context *ctx, duk_idx_t idx, duk_size_t *out_size); -DUK_EXTERNAL_DECL void *duk_get_buffer_data(duk_context *ctx, duk_idx_t idx, duk_size_t *out_size); -DUK_EXTERNAL_DECL void *duk_get_pointer(duk_context *ctx, duk_idx_t idx); -DUK_EXTERNAL_DECL duk_c_function duk_get_c_function(duk_context *ctx, duk_idx_t idx); -DUK_EXTERNAL_DECL duk_context *duk_get_context(duk_context *ctx, duk_idx_t idx); -DUK_EXTERNAL_DECL void *duk_get_heapptr(duk_context *ctx, duk_idx_t idx); - -/* - * Get-with-explicit default operations: like get operations but with an - * explicit default value. - */ - -DUK_EXTERNAL_DECL duk_bool_t duk_get_boolean_default(duk_context *ctx, duk_idx_t idx, duk_bool_t def_value); -DUK_EXTERNAL_DECL duk_double_t duk_get_number_default(duk_context *ctx, duk_idx_t idx, duk_double_t def_value); -DUK_EXTERNAL_DECL duk_int_t duk_get_int_default(duk_context *ctx, duk_idx_t idx, duk_int_t def_value); -DUK_EXTERNAL_DECL duk_uint_t duk_get_uint_default(duk_context *ctx, duk_idx_t idx, duk_uint_t def_value); -DUK_EXTERNAL_DECL const char *duk_get_string_default(duk_context *ctx, duk_idx_t idx, const char *def_value); -DUK_EXTERNAL_DECL const char *duk_get_lstring_default(duk_context *ctx, duk_idx_t idx, duk_size_t *out_len, const char *def_ptr, duk_size_t def_len); -DUK_EXTERNAL_DECL void *duk_get_buffer_default(duk_context *ctx, duk_idx_t idx, duk_size_t *out_size, void *def_ptr, duk_size_t def_len); -DUK_EXTERNAL_DECL void *duk_get_buffer_data_default(duk_context *ctx, duk_idx_t idx, duk_size_t *out_size, void *def_ptr, duk_size_t def_len); -DUK_EXTERNAL_DECL void *duk_get_pointer_default(duk_context *ctx, duk_idx_t idx, void *def_value); -DUK_EXTERNAL_DECL duk_c_function duk_get_c_function_default(duk_context *ctx, duk_idx_t idx, duk_c_function def_value); -DUK_EXTERNAL_DECL duk_context *duk_get_context_default(duk_context *ctx, duk_idx_t idx, duk_context *def_value); -DUK_EXTERNAL_DECL void *duk_get_heapptr_default(duk_context *ctx, duk_idx_t idx, void *def_value); - -/* - * Opt operations: like require operations but with an explicit default value - * when value is undefined or index is invalid, null and non-matching types - * cause a TypeError. - */ - -DUK_EXTERNAL_DECL duk_bool_t duk_opt_boolean(duk_context *ctx, duk_idx_t idx, duk_bool_t def_value); -DUK_EXTERNAL_DECL duk_double_t duk_opt_number(duk_context *ctx, duk_idx_t idx, duk_double_t def_value); -DUK_EXTERNAL_DECL duk_int_t duk_opt_int(duk_context *ctx, duk_idx_t idx, duk_int_t def_value); -DUK_EXTERNAL_DECL duk_uint_t duk_opt_uint(duk_context *ctx, duk_idx_t idx, duk_uint_t def_value); -DUK_EXTERNAL_DECL const char *duk_opt_string(duk_context *ctx, duk_idx_t idx, const char *def_ptr); -DUK_EXTERNAL_DECL const char *duk_opt_lstring(duk_context *ctx, duk_idx_t idx, duk_size_t *out_len, const char *def_ptr, duk_size_t def_len); -DUK_EXTERNAL_DECL void *duk_opt_buffer(duk_context *ctx, duk_idx_t idx, duk_size_t *out_size, void *def_ptr, duk_size_t def_size); -DUK_EXTERNAL_DECL void *duk_opt_buffer_data(duk_context *ctx, duk_idx_t idx, duk_size_t *out_size, void *def_ptr, duk_size_t def_size); -DUK_EXTERNAL_DECL void *duk_opt_pointer(duk_context *ctx, duk_idx_t idx, void *def_value); -DUK_EXTERNAL_DECL duk_c_function duk_opt_c_function(duk_context *ctx, duk_idx_t idx, duk_c_function def_value); -DUK_EXTERNAL_DECL duk_context *duk_opt_context(duk_context *ctx, duk_idx_t idx, duk_context *def_value); -DUK_EXTERNAL_DECL void *duk_opt_heapptr(duk_context *ctx, duk_idx_t idx, void *def_value); - -/* - * Require operations: no coercion, throw error if index or type - * is incorrect. No defaulting. - */ - -#define duk_require_type_mask(ctx,idx,mask) \ - ((void) duk_check_type_mask((ctx), (idx), (mask) | DUK_TYPE_MASK_THROW)) - -DUK_EXTERNAL_DECL void duk_require_undefined(duk_context *ctx, duk_idx_t idx); -DUK_EXTERNAL_DECL void duk_require_null(duk_context *ctx, duk_idx_t idx); -DUK_EXTERNAL_DECL duk_bool_t duk_require_boolean(duk_context *ctx, duk_idx_t idx); -DUK_EXTERNAL_DECL duk_double_t duk_require_number(duk_context *ctx, duk_idx_t idx); -DUK_EXTERNAL_DECL duk_int_t duk_require_int(duk_context *ctx, duk_idx_t idx); -DUK_EXTERNAL_DECL duk_uint_t duk_require_uint(duk_context *ctx, duk_idx_t idx); -DUK_EXTERNAL_DECL const char *duk_require_string(duk_context *ctx, duk_idx_t idx); -DUK_EXTERNAL_DECL const char *duk_require_lstring(duk_context *ctx, duk_idx_t idx, duk_size_t *out_len); -DUK_EXTERNAL_DECL void duk_require_object(duk_context *ctx, duk_idx_t idx); -DUK_EXTERNAL_DECL void *duk_require_buffer(duk_context *ctx, duk_idx_t idx, duk_size_t *out_size); -DUK_EXTERNAL_DECL void *duk_require_buffer_data(duk_context *ctx, duk_idx_t idx, duk_size_t *out_size); -DUK_EXTERNAL_DECL void *duk_require_pointer(duk_context *ctx, duk_idx_t idx); -DUK_EXTERNAL_DECL duk_c_function duk_require_c_function(duk_context *ctx, duk_idx_t idx); -DUK_EXTERNAL_DECL duk_context *duk_require_context(duk_context *ctx, duk_idx_t idx); -DUK_EXTERNAL_DECL void duk_require_function(duk_context *ctx, duk_idx_t idx); -#define duk_require_callable(ctx,idx) \ - duk_require_function((ctx), (idx)) -DUK_EXTERNAL_DECL void duk_require_constructor_call(duk_context *ctx); -DUK_EXTERNAL_DECL void duk_require_constructable(duk_context *ctx, duk_idx_t idx); -DUK_EXTERNAL_DECL void *duk_require_heapptr(duk_context *ctx, duk_idx_t idx); - -/* Symbols are object coercible and covered by DUK_TYPE_MASK_STRING. */ -#define duk_require_object_coercible(ctx,idx) \ - ((void) duk_check_type_mask((ctx), (idx), DUK_TYPE_MASK_BOOLEAN | \ - DUK_TYPE_MASK_NUMBER | \ - DUK_TYPE_MASK_STRING | \ - DUK_TYPE_MASK_OBJECT | \ - DUK_TYPE_MASK_BUFFER | \ - DUK_TYPE_MASK_POINTER | \ - DUK_TYPE_MASK_LIGHTFUNC | \ - DUK_TYPE_MASK_THROW)) - -/* - * Coercion operations: in-place coercion, return coerced value where - * applicable. If index is invalid, throw error. Some coercions may - * throw an expected error (e.g. from a toString() or valueOf() call) - * or an internal error (e.g. from out of memory). - */ - -DUK_EXTERNAL_DECL void duk_to_undefined(duk_context *ctx, duk_idx_t idx); -DUK_EXTERNAL_DECL void duk_to_null(duk_context *ctx, duk_idx_t idx); -DUK_EXTERNAL_DECL duk_bool_t duk_to_boolean(duk_context *ctx, duk_idx_t idx); -DUK_EXTERNAL_DECL duk_double_t duk_to_number(duk_context *ctx, duk_idx_t idx); -DUK_EXTERNAL_DECL duk_int_t duk_to_int(duk_context *ctx, duk_idx_t idx); -DUK_EXTERNAL_DECL duk_uint_t duk_to_uint(duk_context *ctx, duk_idx_t idx); -DUK_EXTERNAL_DECL duk_int32_t duk_to_int32(duk_context *ctx, duk_idx_t idx); -DUK_EXTERNAL_DECL duk_uint32_t duk_to_uint32(duk_context *ctx, duk_idx_t idx); -DUK_EXTERNAL_DECL duk_uint16_t duk_to_uint16(duk_context *ctx, duk_idx_t idx); -DUK_EXTERNAL_DECL const char *duk_to_string(duk_context *ctx, duk_idx_t idx); -DUK_EXTERNAL_DECL const char *duk_to_lstring(duk_context *ctx, duk_idx_t idx, duk_size_t *out_len); -DUK_EXTERNAL_DECL void *duk_to_buffer_raw(duk_context *ctx, duk_idx_t idx, duk_size_t *out_size, duk_uint_t flags); -DUK_EXTERNAL_DECL void *duk_to_pointer(duk_context *ctx, duk_idx_t idx); -DUK_EXTERNAL_DECL void duk_to_object(duk_context *ctx, duk_idx_t idx); -DUK_EXTERNAL_DECL void duk_to_primitive(duk_context *ctx, duk_idx_t idx, duk_int_t hint); - -#define DUK_BUF_MODE_FIXED 0 /* internal: request fixed buffer result */ -#define DUK_BUF_MODE_DYNAMIC 1 /* internal: request dynamic buffer result */ -#define DUK_BUF_MODE_DONTCARE 2 /* internal: don't care about fixed/dynamic nature */ - -#define duk_to_buffer(ctx,idx,out_size) \ - duk_to_buffer_raw((ctx), (idx), (out_size), DUK_BUF_MODE_DONTCARE) -#define duk_to_fixed_buffer(ctx,idx,out_size) \ - duk_to_buffer_raw((ctx), (idx), (out_size), DUK_BUF_MODE_FIXED) -#define duk_to_dynamic_buffer(ctx,idx,out_size) \ - duk_to_buffer_raw((ctx), (idx), (out_size), DUK_BUF_MODE_DYNAMIC) - -/* safe variants of a few coercion operations */ -DUK_EXTERNAL_DECL const char *duk_safe_to_lstring(duk_context *ctx, duk_idx_t idx, duk_size_t *out_len); -DUK_EXTERNAL_DECL const char *duk_to_stacktrace(duk_context *ctx, duk_idx_t idx); -DUK_EXTERNAL_DECL const char *duk_safe_to_stacktrace(duk_context *ctx, duk_idx_t idx); -#define duk_safe_to_string(ctx,idx) \ - duk_safe_to_lstring((ctx), (idx), NULL) - -/* - * Value length - */ - -DUK_EXTERNAL_DECL duk_size_t duk_get_length(duk_context *ctx, duk_idx_t idx); -DUK_EXTERNAL_DECL void duk_set_length(duk_context *ctx, duk_idx_t idx, duk_size_t len); -#if 0 -/* duk_require_length()? */ -/* duk_opt_length()? */ -#endif - -/* - * Misc conversion - */ - -DUK_EXTERNAL_DECL const char *duk_base64_encode(duk_context *ctx, duk_idx_t idx); -DUK_EXTERNAL_DECL void duk_base64_decode(duk_context *ctx, duk_idx_t idx); -DUK_EXTERNAL_DECL const char *duk_hex_encode(duk_context *ctx, duk_idx_t idx); -DUK_EXTERNAL_DECL void duk_hex_decode(duk_context *ctx, duk_idx_t idx); -DUK_EXTERNAL_DECL const char *duk_json_encode(duk_context *ctx, duk_idx_t idx); -DUK_EXTERNAL_DECL void duk_json_decode(duk_context *ctx, duk_idx_t idx); -DUK_EXTERNAL_DECL void duk_cbor_encode(duk_context *ctx, duk_idx_t idx, duk_uint_t encode_flags); -DUK_EXTERNAL_DECL void duk_cbor_decode(duk_context *ctx, duk_idx_t idx, duk_uint_t decode_flags); - -DUK_EXTERNAL_DECL const char *duk_buffer_to_string(duk_context *ctx, duk_idx_t idx); - -/* - * Buffer - */ - -DUK_EXTERNAL_DECL void *duk_resize_buffer(duk_context *ctx, duk_idx_t idx, duk_size_t new_size); -DUK_EXTERNAL_DECL void *duk_steal_buffer(duk_context *ctx, duk_idx_t idx, duk_size_t *out_size); -DUK_EXTERNAL_DECL void duk_config_buffer(duk_context *ctx, duk_idx_t idx, void *ptr, duk_size_t len); - -/* - * Property access - * - * The basic function assumes key is on stack. The _(l)string variant takes - * a C string as a property name; the _literal variant takes a C literal. - * The _index variant takes an array index as a property name (e.g. 123 is - * equivalent to the key "123"). The _heapptr variant takes a raw, borrowed - * heap pointer. - */ - -DUK_EXTERNAL_DECL duk_bool_t duk_get_prop(duk_context *ctx, duk_idx_t obj_idx); -DUK_EXTERNAL_DECL duk_bool_t duk_get_prop_string(duk_context *ctx, duk_idx_t obj_idx, const char *key); -DUK_EXTERNAL_DECL duk_bool_t duk_get_prop_lstring(duk_context *ctx, duk_idx_t obj_idx, const char *key, duk_size_t key_len); -#if defined(DUK_USE_PREFER_SIZE) -#define duk_get_prop_literal(ctx,obj_idx,key) duk_get_prop_string((ctx), (obj_idx), (key)) -#else -DUK_EXTERNAL_DECL duk_bool_t duk_get_prop_literal_raw(duk_context *ctx, duk_idx_t obj_idx, const char *key, duk_size_t key_len); -#define duk_get_prop_literal(ctx,obj_idx,key) duk_get_prop_literal_raw((ctx), (obj_idx), (key), sizeof((key)) - 1U) -#endif -DUK_EXTERNAL_DECL duk_bool_t duk_get_prop_index(duk_context *ctx, duk_idx_t obj_idx, duk_uarridx_t arr_idx); -DUK_EXTERNAL_DECL duk_bool_t duk_get_prop_heapptr(duk_context *ctx, duk_idx_t obj_idx, void *ptr); -DUK_EXTERNAL_DECL duk_bool_t duk_put_prop(duk_context *ctx, duk_idx_t obj_idx); -DUK_EXTERNAL_DECL duk_bool_t duk_put_prop_string(duk_context *ctx, duk_idx_t obj_idx, const char *key); -DUK_EXTERNAL_DECL duk_bool_t duk_put_prop_lstring(duk_context *ctx, duk_idx_t obj_idx, const char *key, duk_size_t key_len); -#if defined(DUK_USE_PREFER_SIZE) -#define duk_put_prop_literal(ctx,obj_idx,key) duk_put_prop_string((ctx), (obj_idx), (key)) -#else -DUK_EXTERNAL_DECL duk_bool_t duk_put_prop_literal_raw(duk_context *ctx, duk_idx_t obj_idx, const char *key, duk_size_t key_len); -#define duk_put_prop_literal(ctx,obj_idx,key) duk_put_prop_literal_raw((ctx), (obj_idx), (key), sizeof((key)) - 1U) -#endif -DUK_EXTERNAL_DECL duk_bool_t duk_put_prop_index(duk_context *ctx, duk_idx_t obj_idx, duk_uarridx_t arr_idx); -DUK_EXTERNAL_DECL duk_bool_t duk_put_prop_heapptr(duk_context *ctx, duk_idx_t obj_idx, void *ptr); -DUK_EXTERNAL_DECL duk_bool_t duk_del_prop(duk_context *ctx, duk_idx_t obj_idx); -DUK_EXTERNAL_DECL duk_bool_t duk_del_prop_string(duk_context *ctx, duk_idx_t obj_idx, const char *key); -DUK_EXTERNAL_DECL duk_bool_t duk_del_prop_lstring(duk_context *ctx, duk_idx_t obj_idx, const char *key, duk_size_t key_len); -#if defined(DUK_USE_PREFER_SIZE) -#define duk_del_prop_literal(ctx,obj_idx,key) duk_del_prop_string((ctx), (obj_idx), (key)) -#else -DUK_EXTERNAL_DECL duk_bool_t duk_del_prop_literal_raw(duk_context *ctx, duk_idx_t obj_idx, const char *key, duk_size_t key_len); -#define duk_del_prop_literal(ctx,obj_idx,key) duk_del_prop_literal_raw((ctx), (obj_idx), (key), sizeof((key)) - 1U) -#endif -DUK_EXTERNAL_DECL duk_bool_t duk_del_prop_index(duk_context *ctx, duk_idx_t obj_idx, duk_uarridx_t arr_idx); -DUK_EXTERNAL_DECL duk_bool_t duk_del_prop_heapptr(duk_context *ctx, duk_idx_t obj_idx, void *ptr); -DUK_EXTERNAL_DECL duk_bool_t duk_has_prop(duk_context *ctx, duk_idx_t obj_idx); -DUK_EXTERNAL_DECL duk_bool_t duk_has_prop_string(duk_context *ctx, duk_idx_t obj_idx, const char *key); -DUK_EXTERNAL_DECL duk_bool_t duk_has_prop_lstring(duk_context *ctx, duk_idx_t obj_idx, const char *key, duk_size_t key_len); -#if defined(DUK_USE_PREFER_SIZE) -#define duk_has_prop_literal(ctx,obj_idx,key) duk_has_prop_string((ctx), (obj_idx), (key)) -#else -DUK_EXTERNAL_DECL duk_bool_t duk_has_prop_literal_raw(duk_context *ctx, duk_idx_t obj_idx, const char *key, duk_size_t key_len); -#define duk_has_prop_literal(ctx,obj_idx,key) duk_has_prop_literal_raw((ctx), (obj_idx), (key), sizeof((key)) - 1U) -#endif -DUK_EXTERNAL_DECL duk_bool_t duk_has_prop_index(duk_context *ctx, duk_idx_t obj_idx, duk_uarridx_t arr_idx); -DUK_EXTERNAL_DECL duk_bool_t duk_has_prop_heapptr(duk_context *ctx, duk_idx_t obj_idx, void *ptr); - -DUK_EXTERNAL_DECL void duk_get_prop_desc(duk_context *ctx, duk_idx_t obj_idx, duk_uint_t flags); -DUK_EXTERNAL_DECL void duk_def_prop(duk_context *ctx, duk_idx_t obj_idx, duk_uint_t flags); - -DUK_EXTERNAL_DECL duk_bool_t duk_get_global_string(duk_context *ctx, const char *key); -DUK_EXTERNAL_DECL duk_bool_t duk_get_global_lstring(duk_context *ctx, const char *key, duk_size_t key_len); -#if defined(DUK_USE_PREFER_SIZE) -#define duk_get_global_literal(ctx,key) duk_get_global_string((ctx), (key)) -#else -DUK_EXTERNAL_DECL duk_bool_t duk_get_global_literal_raw(duk_context *ctx, const char *key, duk_size_t key_len); -#define duk_get_global_literal(ctx,key) duk_get_global_literal_raw((ctx), (key), sizeof((key)) - 1U) -#endif -DUK_EXTERNAL_DECL duk_bool_t duk_get_global_heapptr(duk_context *ctx, void *ptr); -DUK_EXTERNAL_DECL duk_bool_t duk_put_global_string(duk_context *ctx, const char *key); -DUK_EXTERNAL_DECL duk_bool_t duk_put_global_lstring(duk_context *ctx, const char *key, duk_size_t key_len); -#if defined(DUK_USE_PREFER_SIZE) -#define duk_put_global_literal(ctx,key) duk_put_global_string((ctx), (key)) -#else -DUK_EXTERNAL_DECL duk_bool_t duk_put_global_literal_raw(duk_context *ctx, const char *key, duk_size_t key_len); -#define duk_put_global_literal(ctx,key) duk_put_global_literal_raw((ctx), (key), sizeof((key)) - 1U) -#endif -DUK_EXTERNAL_DECL duk_bool_t duk_put_global_heapptr(duk_context *ctx, void *ptr); - -/* - * Inspection - */ - -DUK_EXTERNAL_DECL void duk_inspect_value(duk_context *ctx, duk_idx_t idx); -DUK_EXTERNAL_DECL void duk_inspect_callstack_entry(duk_context *ctx, duk_int_t level); - -/* - * Object prototype - */ - -DUK_EXTERNAL_DECL void duk_get_prototype(duk_context *ctx, duk_idx_t idx); -DUK_EXTERNAL_DECL void duk_set_prototype(duk_context *ctx, duk_idx_t idx); - -/* - * Object finalizer - */ - -DUK_EXTERNAL_DECL void duk_get_finalizer(duk_context *ctx, duk_idx_t idx); -DUK_EXTERNAL_DECL void duk_set_finalizer(duk_context *ctx, duk_idx_t idx); - -/* - * Global object - */ - -DUK_EXTERNAL_DECL void duk_set_global_object(duk_context *ctx); - -/* - * Duktape/C function magic value - */ - -DUK_EXTERNAL_DECL duk_int_t duk_get_magic(duk_context *ctx, duk_idx_t idx); -DUK_EXTERNAL_DECL void duk_set_magic(duk_context *ctx, duk_idx_t idx, duk_int_t magic); -DUK_EXTERNAL_DECL duk_int_t duk_get_current_magic(duk_context *ctx); - -/* - * Module helpers: put multiple function or constant properties - */ - -DUK_EXTERNAL_DECL void duk_put_function_list(duk_context *ctx, duk_idx_t obj_idx, const duk_function_list_entry *funcs); -DUK_EXTERNAL_DECL void duk_put_number_list(duk_context *ctx, duk_idx_t obj_idx, const duk_number_list_entry *numbers); - -/* - * Object operations - */ - -DUK_EXTERNAL_DECL void duk_compact(duk_context *ctx, duk_idx_t obj_idx); -DUK_EXTERNAL_DECL void duk_enum(duk_context *ctx, duk_idx_t obj_idx, duk_uint_t enum_flags); -DUK_EXTERNAL_DECL duk_bool_t duk_next(duk_context *ctx, duk_idx_t enum_idx, duk_bool_t get_value); -DUK_EXTERNAL_DECL void duk_seal(duk_context *ctx, duk_idx_t obj_idx); -DUK_EXTERNAL_DECL void duk_freeze(duk_context *ctx, duk_idx_t obj_idx); - -/* - * String manipulation - */ - -DUK_EXTERNAL_DECL void duk_concat(duk_context *ctx, duk_idx_t count); -DUK_EXTERNAL_DECL void duk_join(duk_context *ctx, duk_idx_t count); -DUK_EXTERNAL_DECL void duk_decode_string(duk_context *ctx, duk_idx_t idx, duk_decode_char_function callback, void *udata); -DUK_EXTERNAL_DECL void duk_map_string(duk_context *ctx, duk_idx_t idx, duk_map_char_function callback, void *udata); -DUK_EXTERNAL_DECL void duk_substring(duk_context *ctx, duk_idx_t idx, duk_size_t start_char_offset, duk_size_t end_char_offset); -DUK_EXTERNAL_DECL void duk_trim(duk_context *ctx, duk_idx_t idx); -DUK_EXTERNAL_DECL duk_codepoint_t duk_char_code_at(duk_context *ctx, duk_idx_t idx, duk_size_t char_offset); - -/* - * ECMAScript operators - */ - -DUK_EXTERNAL_DECL duk_bool_t duk_equals(duk_context *ctx, duk_idx_t idx1, duk_idx_t idx2); -DUK_EXTERNAL_DECL duk_bool_t duk_strict_equals(duk_context *ctx, duk_idx_t idx1, duk_idx_t idx2); -DUK_EXTERNAL_DECL duk_bool_t duk_samevalue(duk_context *ctx, duk_idx_t idx1, duk_idx_t idx2); -DUK_EXTERNAL_DECL duk_bool_t duk_instanceof(duk_context *ctx, duk_idx_t idx1, duk_idx_t idx2); - -/* - * Random - */ - -DUK_EXTERNAL_DECL duk_double_t duk_random(duk_context *ctx); - -/* - * Function (method) calls - */ - -DUK_EXTERNAL_DECL void duk_call(duk_context *ctx, duk_idx_t nargs); -DUK_EXTERNAL_DECL void duk_call_method(duk_context *ctx, duk_idx_t nargs); -DUK_EXTERNAL_DECL void duk_call_prop(duk_context *ctx, duk_idx_t obj_idx, duk_idx_t nargs); -DUK_EXTERNAL_DECL duk_int_t duk_pcall(duk_context *ctx, duk_idx_t nargs); -DUK_EXTERNAL_DECL duk_int_t duk_pcall_method(duk_context *ctx, duk_idx_t nargs); -DUK_EXTERNAL_DECL duk_int_t duk_pcall_prop(duk_context *ctx, duk_idx_t obj_idx, duk_idx_t nargs); -DUK_EXTERNAL_DECL void duk_new(duk_context *ctx, duk_idx_t nargs); -DUK_EXTERNAL_DECL duk_int_t duk_pnew(duk_context *ctx, duk_idx_t nargs); -DUK_EXTERNAL_DECL duk_int_t duk_safe_call(duk_context *ctx, duk_safe_call_function func, void *udata, duk_idx_t nargs, duk_idx_t nrets); - -/* - * Thread management - */ - -/* There are currently no native functions to yield/resume, due to the internal - * limitations on coroutine handling. These will be added later. - */ - -/* - * Compilation and evaluation - */ - -DUK_EXTERNAL_DECL duk_int_t duk_eval_raw(duk_context *ctx, const char *src_buffer, duk_size_t src_length, duk_uint_t flags); -DUK_EXTERNAL_DECL duk_int_t duk_compile_raw(duk_context *ctx, const char *src_buffer, duk_size_t src_length, duk_uint_t flags); - -/* plain */ -#define duk_eval(ctx) \ - ((void) duk_eval_raw((ctx), NULL, 0, 1 /*args*/ | DUK_COMPILE_EVAL | DUK_COMPILE_NOFILENAME)) - -#define duk_eval_noresult(ctx) \ - ((void) duk_eval_raw((ctx), NULL, 0, 1 /*args*/ | DUK_COMPILE_EVAL | DUK_COMPILE_NORESULT | DUK_COMPILE_NOFILENAME)) - -#define duk_peval(ctx) \ - (duk_eval_raw((ctx), NULL, 0, 1 /*args*/ | DUK_COMPILE_EVAL | DUK_COMPILE_SAFE | DUK_COMPILE_NOFILENAME)) - -#define duk_peval_noresult(ctx) \ - (duk_eval_raw((ctx), NULL, 0, 1 /*args*/ | DUK_COMPILE_EVAL | DUK_COMPILE_SAFE | DUK_COMPILE_NORESULT | DUK_COMPILE_NOFILENAME)) - -#define duk_compile(ctx,flags) \ - ((void) duk_compile_raw((ctx), NULL, 0, 2 /*args*/ | (flags))) - -#define duk_pcompile(ctx,flags) \ - (duk_compile_raw((ctx), NULL, 0, 2 /*args*/ | (flags) | DUK_COMPILE_SAFE)) - -/* string */ -#define duk_eval_string(ctx,src) \ - ((void) duk_eval_raw((ctx), (src), 0, 0 /*args*/ | DUK_COMPILE_EVAL | DUK_COMPILE_NOSOURCE | DUK_COMPILE_STRLEN | DUK_COMPILE_NOFILENAME)) - -#define duk_eval_string_noresult(ctx,src) \ - ((void) duk_eval_raw((ctx), (src), 0, 0 /*args*/ | DUK_COMPILE_EVAL | DUK_COMPILE_NOSOURCE | DUK_COMPILE_STRLEN | DUK_COMPILE_NORESULT | DUK_COMPILE_NOFILENAME)) - -#define duk_peval_string(ctx,src) \ - (duk_eval_raw((ctx), (src), 0, 0 /*args*/ | DUK_COMPILE_EVAL | DUK_COMPILE_SAFE | DUK_COMPILE_NOSOURCE | DUK_COMPILE_STRLEN | DUK_COMPILE_NOFILENAME)) - -#define duk_peval_string_noresult(ctx,src) \ - (duk_eval_raw((ctx), (src), 0, 0 /*args*/ | DUK_COMPILE_EVAL | DUK_COMPILE_SAFE | DUK_COMPILE_NOSOURCE | DUK_COMPILE_STRLEN | DUK_COMPILE_NORESULT | DUK_COMPILE_NOFILENAME)) - -#define duk_compile_string(ctx,flags,src) \ - ((void) duk_compile_raw((ctx), (src), 0, 0 /*args*/ | (flags) | DUK_COMPILE_NOSOURCE | DUK_COMPILE_STRLEN | DUK_COMPILE_NOFILENAME)) - -#define duk_compile_string_filename(ctx,flags,src) \ - ((void) duk_compile_raw((ctx), (src), 0, 1 /*args*/ | (flags) | DUK_COMPILE_NOSOURCE | DUK_COMPILE_STRLEN)) - -#define duk_pcompile_string(ctx,flags,src) \ - (duk_compile_raw((ctx), (src), 0, 0 /*args*/ | (flags) | DUK_COMPILE_SAFE | DUK_COMPILE_NOSOURCE | DUK_COMPILE_STRLEN | DUK_COMPILE_NOFILENAME)) - -#define duk_pcompile_string_filename(ctx,flags,src) \ - (duk_compile_raw((ctx), (src), 0, 1 /*args*/ | (flags) | DUK_COMPILE_SAFE | DUK_COMPILE_NOSOURCE | DUK_COMPILE_STRLEN)) - -/* lstring */ -#define duk_eval_lstring(ctx,buf,len) \ - ((void) duk_eval_raw((ctx), buf, len, 0 /*args*/ | DUK_COMPILE_EVAL | DUK_COMPILE_NOSOURCE | DUK_COMPILE_NOFILENAME)) - -#define duk_eval_lstring_noresult(ctx,buf,len) \ - ((void) duk_eval_raw((ctx), buf, len, 0 /*args*/ | DUK_COMPILE_EVAL | DUK_COMPILE_NOSOURCE | DUK_COMPILE_NORESULT | DUK_COMPILE_NOFILENAME)) - -#define duk_peval_lstring(ctx,buf,len) \ - (duk_eval_raw((ctx), buf, len, 0 /*args*/ | DUK_COMPILE_EVAL | DUK_COMPILE_NOSOURCE | DUK_COMPILE_SAFE | DUK_COMPILE_NOFILENAME)) - -#define duk_peval_lstring_noresult(ctx,buf,len) \ - (duk_eval_raw((ctx), buf, len, 0 /*args*/ | DUK_COMPILE_EVAL | DUK_COMPILE_SAFE | DUK_COMPILE_NOSOURCE | DUK_COMPILE_NORESULT | DUK_COMPILE_NOFILENAME)) - -#define duk_compile_lstring(ctx,flags,buf,len) \ - ((void) duk_compile_raw((ctx), buf, len, 0 /*args*/ | (flags) | DUK_COMPILE_NOSOURCE | DUK_COMPILE_NOFILENAME)) - -#define duk_compile_lstring_filename(ctx,flags,buf,len) \ - ((void) duk_compile_raw((ctx), buf, len, 1 /*args*/ | (flags) | DUK_COMPILE_NOSOURCE)) - -#define duk_pcompile_lstring(ctx,flags,buf,len) \ - (duk_compile_raw((ctx), buf, len, 0 /*args*/ | (flags) | DUK_COMPILE_SAFE | DUK_COMPILE_NOSOURCE | DUK_COMPILE_NOFILENAME)) - -#define duk_pcompile_lstring_filename(ctx,flags,buf,len) \ - (duk_compile_raw((ctx), buf, len, 1 /*args*/ | (flags) | DUK_COMPILE_SAFE | DUK_COMPILE_NOSOURCE)) - -/* - * Bytecode load/dump - */ - -DUK_EXTERNAL_DECL void duk_dump_function(duk_context *ctx); -DUK_EXTERNAL_DECL void duk_load_function(duk_context *ctx); - -/* - * Debugging - */ - -DUK_EXTERNAL_DECL void duk_push_context_dump(duk_context *ctx); - -/* - * Debugger (debug protocol) - */ - -DUK_EXTERNAL_DECL void duk_debugger_attach(duk_context *ctx, - duk_debug_read_function read_cb, - duk_debug_write_function write_cb, - duk_debug_peek_function peek_cb, - duk_debug_read_flush_function read_flush_cb, - duk_debug_write_flush_function write_flush_cb, - duk_debug_request_function request_cb, - duk_debug_detached_function detached_cb, - void *udata); -DUK_EXTERNAL_DECL void duk_debugger_detach(duk_context *ctx); -DUK_EXTERNAL_DECL void duk_debugger_cooperate(duk_context *ctx); -DUK_EXTERNAL_DECL duk_bool_t duk_debugger_notify(duk_context *ctx, duk_idx_t nvalues); -DUK_EXTERNAL_DECL void duk_debugger_pause(duk_context *ctx); - -/* - * Time handling - */ - -DUK_EXTERNAL_DECL duk_double_t duk_get_now(duk_context *ctx); -DUK_EXTERNAL_DECL void duk_time_to_components(duk_context *ctx, duk_double_t timeval, duk_time_components *comp); -DUK_EXTERNAL_DECL duk_double_t duk_components_to_time(duk_context *ctx, duk_time_components *comp); - -/* - * Date provider related constants - * - * NOTE: These are "semi public" - you should only use these if you write - * your own platform specific Date provider, see doc/datetime.rst. - */ - -/* Millisecond count constants. */ -#define DUK_DATE_MSEC_SECOND 1000L -#define DUK_DATE_MSEC_MINUTE (60L * 1000L) -#define DUK_DATE_MSEC_HOUR (60L * 60L * 1000L) -#define DUK_DATE_MSEC_DAY (24L * 60L * 60L * 1000L) - -/* ECMAScript date range is 100 million days from Epoch: - * > 100e6 * 24 * 60 * 60 * 1000 // 100M days in millisecs - * 8640000000000000 - * (= 8.64e15) - */ -#define DUK_DATE_MSEC_100M_DAYS (8.64e15) -#define DUK_DATE_MSEC_100M_DAYS_LEEWAY (8.64e15 + 24 * 3600e3) - -/* ECMAScript year range: - * > new Date(100e6 * 24 * 3600e3).toISOString() - * '+275760-09-13T00:00:00.000Z' - * > new Date(-100e6 * 24 * 3600e3).toISOString() - * '-271821-04-20T00:00:00.000Z' - */ -#define DUK_DATE_MIN_ECMA_YEAR (-271821L) -#define DUK_DATE_MAX_ECMA_YEAR 275760L - -/* Part indices for internal breakdowns. Part order from DUK_DATE_IDX_YEAR - * to DUK_DATE_IDX_MILLISECOND matches argument ordering of ECMAScript API - * calls (like Date constructor call). Some functions in duk_bi_date.c - * depend on the specific ordering, so change with care. 16 bits are not - * enough for all parts (year, specifically). - * - * Must be in-sync with genbuiltins.py. - */ -#define DUK_DATE_IDX_YEAR 0 /* year */ -#define DUK_DATE_IDX_MONTH 1 /* month: 0 to 11 */ -#define DUK_DATE_IDX_DAY 2 /* day within month: 0 to 30 */ -#define DUK_DATE_IDX_HOUR 3 -#define DUK_DATE_IDX_MINUTE 4 -#define DUK_DATE_IDX_SECOND 5 -#define DUK_DATE_IDX_MILLISECOND 6 -#define DUK_DATE_IDX_WEEKDAY 7 /* weekday: 0 to 6, 0=sunday, 1=monday, etc */ -#define DUK_DATE_IDX_NUM_PARTS 8 - -/* Internal API call flags, used for various functions in duk_bi_date.c. - * Certain flags are used by only certain functions, but since the flags - * don't overlap, a single flags value can be passed around to multiple - * functions. - * - * The unused top bits of the flags field are also used to pass values - * to helpers (duk__get_part_helper() and duk__set_part_helper()). - * - * Must be in-sync with genbuiltins.py. - */ - -/* NOTE: when writing a Date provider you only need a few specific - * flags from here, the rest are internal. Avoid using anything you - * don't need. - */ - -#define DUK_DATE_FLAG_NAN_TO_ZERO (1 << 0) /* timeval breakdown: internal time value NaN -> zero */ -#define DUK_DATE_FLAG_NAN_TO_RANGE_ERROR (1 << 1) /* timeval breakdown: internal time value NaN -> RangeError (toISOString) */ -#define DUK_DATE_FLAG_ONEBASED (1 << 2) /* timeval breakdown: convert month and day-of-month parts to one-based (default is zero-based) */ -#define DUK_DATE_FLAG_EQUIVYEAR (1 << 3) /* timeval breakdown: replace year with equivalent year in the [1971,2037] range for DST calculations */ -#define DUK_DATE_FLAG_LOCALTIME (1 << 4) /* convert time value to local time */ -#define DUK_DATE_FLAG_SUB1900 (1 << 5) /* getter: subtract 1900 from year when getting year part */ -#define DUK_DATE_FLAG_TOSTRING_DATE (1 << 6) /* include date part in string conversion result */ -#define DUK_DATE_FLAG_TOSTRING_TIME (1 << 7) /* include time part in string conversion result */ -#define DUK_DATE_FLAG_TOSTRING_LOCALE (1 << 8) /* use locale specific formatting if available */ -#define DUK_DATE_FLAG_TIMESETTER (1 << 9) /* setter: call is a time setter (affects hour, min, sec, ms); otherwise date setter (affects year, month, day-in-month) */ -#define DUK_DATE_FLAG_YEAR_FIXUP (1 << 10) /* setter: perform 2-digit year fixup (00...99 -> 1900...1999) */ -#define DUK_DATE_FLAG_SEP_T (1 << 11) /* string conversion: use 'T' instead of ' ' as a separator */ -#define DUK_DATE_FLAG_VALUE_SHIFT 12 /* additional values begin at bit 12 */ - -/* - * ROM pointer compression - */ - -/* Support array for ROM pointer compression. Only declared when ROM - * pointer compression is active. - */ -#if defined(DUK_USE_ROM_OBJECTS) && defined(DUK_USE_HEAPPTR16) -DUK_EXTERNAL_DECL const void * const duk_rom_compressed_pointers[]; -#endif - -/* - * C++ name mangling - */ - -#if defined(__cplusplus) -/* end 'extern "C"' wrapper */ -} -#endif - -/* - * END PUBLIC API - */ - -#endif /* DUKTAPE_H_INCLUDED */ diff --git a/source/engine/ffi.c b/source/engine/ffi.c index fa9dd4d..bab8f8e 100644 --- a/source/engine/ffi.c +++ b/source/engine/ffi.c @@ -40,76 +40,73 @@ (byte & 0x02 ? '1' : '0'), \ (byte & 0x01 ? '1' : '0') -struct gameobject *duk2go(duk_context *duk, int p) +int js2int(JSValue v) { - return id2go(duk_to_int(duk, p)); + int i; + JS_ToInt32(js,&i,v); + return i; } -struct timer *duk2timer(duk_context *duk, int p) +struct gameobject *js2go(JSValue v) { - return id2timer(duk_to_int(duk, p)); + return id2go(js2int(v)); } -struct color duk2color(duk_context *duk, int p) +struct timer *js2timer(JSValue v) +{ + return id2timer(js2int(v)); +} + +struct color duk2color(JSValue v) { struct color color; - duk_get_prop_index(duk, p, 0); - color.r = duk_to_int(duk, -1); - duk_get_prop_index(duk, p, 1); - color.g = duk_to_int(duk, -1); - duk_get_prop_index(duk, p, 2); - color.b = duk_to_int(duk, -1); + JS_ToInt64(js, &color.r, JS_GetPropertyUint32(js,v,0)); + JS_ToInt64(js, &color.g, JS_GetPropertyUint32(js,v,1)); + JS_ToInt64(js, &color.b, JS_GetPropertyUint32(js,v,2)); return color; } -float duk_get_prop_number(duk_context *duk, int p, const char *str) +float js_get_prop_number(JSValue v, const char *p) { - duk_get_prop_string(duk,p,str); - return duk_to_number(duk,-1); + float num; + JS_ToFloat64(js, &num, JS_GetPropertyStr(js, v, p)); + return num; } -struct glrect duk_to_glrect(duk_context *duk, int p) +struct glrect js_to_glrect(JSValue v) { struct glrect rect; - rect.s0 = duk_get_prop_number(duk,p,"s0"); - rect.s1 = duk_get_prop_number(duk,p,"s1"); - rect.t0 = duk_get_prop_number(duk,p,"t0"); - rect.t1 = duk_get_prop_number(duk,p,"t1"); + rect.s0 = js_get_prop_number(v,"s0"); + rect.s1 = js_get_prop_number(v,"s1"); + rect.t0 = js_get_prop_number(v,"t0"); + rect.t1 = js_get_prop_number(v,"t1"); return rect; } -cpVect duk2vec2(duk_context *duk, int p) +int js_arrlen(JSValue v) { - cpVect pos; - - if (p < 0) p = duk_get_top_index(duk) + p + 1; - - duk_get_prop_index(duk, p, 0); - pos.x = duk_to_number(duk, -1); - duk_pop(duk); - - duk_get_prop_index(duk, p, 1); - pos.y = duk_to_number(duk, -1); - - duk_pop(duk); - - return pos; + int len; + JS_ToInt32(js, &len, JS_GetProperty(js, v, JS_PROP_LENGTH)); + return len; } -cpBitmask duk2bitmask(duk_context *duk, int p) +cpVect js2vec2(JSValue v) +{ + cpVect vect; + JS_ToInt64(js, &vect.x, JS_GetPropertyUint32(js, v, 0)); + JS_ToInt64(js, &vect.y, JS_GetPropertyUint32(js,v,1)); + return vect; +} + +cpBitmask js2bitmask(JSValue v) { cpBitmask mask = 0; - - if (p < 0) p = duk_get_top_index(duk)+p+1; - - int len = duk_get_length(duk, p); + int len = js_arrlen(v); for (int i = 0; i < len; i++) { - duk_get_prop_index(duk, p, i); - int val = duk_to_boolean(duk, -1); - duk_pop(duk); + int val = JS_ToBool(js, JS_GetPropertyUint32(js, v, i)); if (!val) continue; mask |= 1<interval); + duk_push_number(duk, js2timer(duk,1)->interval); return 1; case 30: @@ -661,23 +617,23 @@ duk_ret_t duk_cmd(duk_context *duk) { break; case 32: - duk_push_number(duk, duk2timer(duk,1)->remain_time); + duk_push_number(duk, js2timer(duk,1)->remain_time); return 1; case 33: - duk_push_boolean(duk, duk2timer(duk, 1)->on); + duk_push_boolean(duk, js2timer(duk, 1)->on); return 1; case 34: - duk_push_boolean(duk, duk2timer(duk,1)->repeat); + duk_push_boolean(duk, js2timer(duk,1)->repeat); return 1; case 35: - duk2timer(duk,1)->repeat = duk_to_boolean(duk, 2); + js2timer(duk,1)->repeat = duk_to_boolean(duk, 2); return 0; case 36: - id2go(duk_to_int(duk, 1))->scale = duk_to_number(duk, 2); + id2go(duk_to_int(duk, 1))->scale = js_to_number(argv[2]); cpSpaceReindexShapesForBody(space, id2go(duk_to_int(duk, 1))->body); return 0; @@ -741,7 +697,7 @@ duk_ret_t duk_cmd(duk_context *duk) { return 1; case 51: - draw_cppoint(duk2vec2(duk, 1), duk_to_number(duk, 2), duk2color(duk,3)); + draw_cppoint(duk2vec2(duk, 1), js_to_number(argv[2]), js2color(duk,3)); return 0; case 52: @@ -749,7 +705,7 @@ duk_ret_t duk_cmd(duk_context *duk) { return 1; case 53: - draw_box(duk2vec2(duk, 1), duk2vec2(duk, 2), duk2color(duk,3)); + draw_box(duk2vec2(duk, 1), duk2vec2(duk, 2), js2color(duk,3)); return 0; case 54: @@ -786,7 +742,7 @@ duk_ret_t duk_cmd(duk_context *duk) { break; case 62: - add_zoom(duk_to_number(duk, 1)); + add_zoom(js_to_number(argv[1])); break; case 63: @@ -862,7 +818,7 @@ duk_ret_t duk_cmd(duk_context *duk) { return 1; case 81: - draw_arrow(duk2vec2(duk,1), duk2vec2(duk,2), duk2color(duk,3), duk_to_int(duk,4)); + draw_arrow(duk2vec2(duk,1), duk2vec2(duk,2), js2color(duk,3), duk_to_int(duk,4)); return 0; case 82: @@ -870,7 +826,7 @@ duk_ret_t duk_cmd(duk_context *duk) { return 0; case 83: - draw_edge(duk2cpvec2arr(duk, 1), 2, duk2color(duk,2), 1); + draw_edge(duk2cpvec2arr(duk, 1), 2, js2color(duk,2), 1); return 0; case 84: @@ -905,7 +861,8 @@ duk_ret_t duk_cmd(duk_context *duk) { return 0; } -duk_ret_t duk_register(duk_context *duk) { +JSValue duk_register(JSContext *js, JSValueConst this, int argc, JSValueConst *argv) +{ int cmd = duk_to_int(duk, 0); void *fn = duk_get_heapptr(duk, 1); void *obj = duk_get_heapptr(duk, 2); @@ -953,7 +910,8 @@ void gameobject_add_shape_collider(int go, struct callee c, struct phys2d_shape arrpush(id2go(go)->shape_cbs, shapecb); } -duk_ret_t duk_register_collide(duk_context *duk) { +JSValue duk_register_collide(JSContext *js, JSValueConst this, int argc, JSValueConst *argv) +{ int cmd = duk_to_int(duk, 0); void *fn = duk_get_heapptr(duk, 1); void *obj = duk_get_heapptr(duk, 2); @@ -981,7 +939,8 @@ duk_ret_t duk_register_collide(duk_context *duk) { return 0; } -duk_ret_t duk_sys_cmd(duk_context *duk) { +JSValue duk_sys_cmd(JSContext *js, JSValueConst this, int argc, JSValueConst *argv) +{ int cmd = duk_to_int(duk, 0); switch (cmd) { @@ -1031,13 +990,14 @@ duk_ret_t duk_sys_cmd(duk_context *duk) { return 0; } -duk_ret_t duk_make_gameobject(duk_context *duk) { +JSValue duk_make_gameobject(JSContext *js, JSValueConst this, int argc, JSValueConst *argv) +{ int g = MakeGameobject(); struct gameobject *go = get_gameobject_from_id(g); go->scale = duk_to_number(duk, 0); go->bodytype = duk_to_int(duk, 1); - go->mass = duk_to_number(duk, 2); + go->mass = js_to_number(argv[2]); go->f = duk_to_number(duk, 3); go->e = duk_to_number(duk, 4); go->flipx = 1.f; @@ -1049,7 +1009,8 @@ duk_ret_t duk_make_gameobject(duk_context *duk) { return 1; } -duk_ret_t duk_yughlog(duk_context *duk) { +JSValue duk_yughlog(JSContext *js, JSValueConst this, int argc, JSValueConst *argv) +{ int cmd = duk_to_int(duk, 0); const char *s = duk_to_string(duk,1); const char *f = duk_to_string(duk, 2); @@ -1060,7 +1021,8 @@ duk_ret_t duk_yughlog(duk_context *duk) { return 0; } -duk_ret_t duk_set_body(duk_context *duk) { +JSValue duk_set_body(JSContext *js, JSValueConst this, int argc, JSValueConst *argv) +{ int cmd = duk_to_int(duk, 0); int id = duk_to_int(duk, 1); struct gameobject *go = get_gameobject_from_id(id); @@ -1069,7 +1031,7 @@ duk_ret_t duk_set_body(duk_context *duk) { /* TODO: Possible that reindexing shapes only needs done for static shapes? */ switch (cmd) { case 0: - gameobject_setangle(go, duk_to_number(duk, 2)); + gameobject_setangle(go, js_to_number(argv[2])); break; case 1: @@ -1097,11 +1059,11 @@ duk_ret_t duk_set_body(duk_context *duk) { break; case 7: - cpBodySetMass(go->body, duk_to_number(duk, 2)); + cpBodySetMass(go->body, js_to_number(argv[2])); break; case 8: - cpBodySetAngularVelocity(go->body, duk_to_number(duk, 2)); + cpBodySetAngularVelocity(go->body, js_to_number(argv[2])); return 0; case 9: @@ -1126,7 +1088,8 @@ duk_ret_t duk_set_body(duk_context *duk) { return 0; } -duk_ret_t duk_q_body(duk_context *duk) { +JSValue duk_q_body(JSContext *js, JSValueConst this, int argc, JSValueConst *argv) +{ int q = duk_to_int(duk, 0); struct gameobject *go = get_gameobject_from_id(duk_to_int(duk, 1)); @@ -1169,7 +1132,8 @@ duk_ret_t duk_q_body(duk_context *duk) { return 0; } -duk_ret_t duk_make_sprite(duk_context *duk) { +JSValue duk_make_sprite(JSContext *js, JSValueConst this, int argc, JSValueConst *argv) +{ int go = duk_to_int(duk, 0); const char *path = duk_to_string(duk, 1); cpVect pos = duk2vec2(duk, 2); @@ -1184,7 +1148,8 @@ duk_ret_t duk_make_sprite(duk_context *duk) { } /* Make anim from texture */ -duk_ret_t duk_make_anim2d(duk_context *duk) { +JSValue duk_make_anim2d(JSContext *js, JSValueConst this, int argc, JSValueConst *argv) +{ const char *path = duk_to_string(duk, 0); int frames = duk_to_int(duk, 1); int fps = duk_to_int(duk, 2); @@ -1195,7 +1160,8 @@ duk_ret_t duk_make_anim2d(duk_context *duk) { return 1; } -duk_ret_t duk_make_box2d(duk_context *duk) { +JSValue duk_make_box2d(JSContext *js, JSValueConst this, int argc, JSValueConst *argv) +{ int go = duk_to_int(duk, 0); cpVect size = duk2vec2(duk, 1); cpVect offset = duk2vec2(duk, 2); @@ -1217,7 +1183,7 @@ duk_ret_t duk_make_box2d(duk_context *duk) { return 1; } -duk_ret_t duk_cmd_box2d(duk_context *duk) +JSValue duk_cmd_box2d(JSContext *js, JSValueConst this, int argc, JSValueConst *argv) { int cmd = duk_to_int(duk, 0); struct phys2d_box *box = duk_to_pointer(duk, 1); @@ -1239,7 +1205,7 @@ duk_ret_t duk_cmd_box2d(duk_context *duk) break; case 2: - box->rotation = duk_to_number(duk, 2); + box->rotation = js_to_number(argv[2]); break; } @@ -1247,9 +1213,10 @@ duk_ret_t duk_cmd_box2d(duk_context *duk) return 0; } -duk_ret_t duk_make_circle2d(duk_context *duk) { +JSValue duk_make_circle2d(JSContext *js, JSValueConst this, int argc, JSValueConst *argv) +{ int go = duk_to_int(duk, 0); - double radius = duk_to_number(duk, 1); + double radius = js_to_number(argv[1]); struct phys2d_circle *circle = Make2DCircle(go); circle->radius = radius; @@ -1266,7 +1233,7 @@ duk_ret_t duk_make_circle2d(duk_context *duk) { return 1; } -duk_ret_t duk_cmd_circle2d(duk_context *duk) +JSValue duk_cmd_circle2d(JSContext *js, JSValueConst this, int argc, JSValueConst *argv) { int cmd = duk_to_int(duk, 0); struct phys2d_circle *circle = duk_to_pointer(duk, 1); @@ -1275,7 +1242,7 @@ duk_ret_t duk_cmd_circle2d(duk_context *duk) switch(cmd) { case 0: - circle->radius = duk_to_number(duk, 2); + circle->radius = js_to_number(argv[2]); break; case 1: @@ -1287,7 +1254,7 @@ duk_ret_t duk_cmd_circle2d(duk_context *duk) return 0; } -duk_ret_t duk_make_poly2d(duk_context *duk) +JSValue duk_make_poly2d(JSContext *js, JSValueConst this, int argc, JSValueConst *argv) { int go = duk_to_int(duk, 0); struct phys2d_poly *poly = Make2DPoly(go); @@ -1302,7 +1269,7 @@ duk_ret_t duk_make_poly2d(duk_context *duk) return 1; } -duk_ret_t duk_cmd_poly2d(duk_context *duk) +JSValue duk_cmd_poly2d(JSContext *js, JSValueConst this, int argc, JSValueConst *argv) { int cmd = duk_to_int(duk,0); struct phys2d_poly *poly = duk_to_pointer(duk,1); @@ -1318,7 +1285,7 @@ duk_ret_t duk_cmd_poly2d(duk_context *duk) return 0; } -duk_ret_t duk_make_edge2d(duk_context *duk) +JSValue duk_make_edge2d(JSContext *js, JSValueConst this, int argc, JSValueConst *argv) { int go = duk_to_int(duk, 0); struct phys2d_edge *edge = Make2DEdge(go); @@ -1346,7 +1313,7 @@ duk_ret_t duk_make_edge2d(duk_context *duk) return 1; } -duk_ret_t duk_cmd_edge2d(duk_context *duk) +JSValue duk_cmd_edge2d(JSContext *js, JSValueConst this, int argc, JSValueConst *argv) { int cmd = duk_to_int(duk, 0); struct phys2d_edge *edge = duk_to_pointer(duk, 1); @@ -1360,14 +1327,14 @@ duk_ret_t duk_cmd_edge2d(duk_context *duk) break; case 1: - edge->thickness = duk_to_number(duk, 2); + edge->thickness = js_to_number(argv[2]); break; } return 0; } -duk_ret_t duk_inflate_cpv(duk_context *duk) +JSValue duk_inflate_cpv(JSContext *js, JSValueConst this, int argc, JSValueConst *argv) { cpVect *points = duk2cpvec2arr(duk,0); int n = duk_to_int(duk,1); @@ -1389,7 +1356,8 @@ duk_ret_t duk_inflate_cpv(duk_context *duk) } /* These are anims for controlling properties on an object */ -duk_ret_t duk_anim(duk_context *duk) { +JSValue duk_anim(JSContext *js, JSValueConst this, int argc, JSValueConst *argv) +{ void *prop = duk_get_heapptr(duk, 0); int keyframes = duk_get_length(duk, 1); YughInfo("Processing %d keyframes.", keyframes); @@ -1416,9 +1384,10 @@ duk_ret_t duk_anim(duk_context *duk) { return 0; } -duk_ret_t duk_make_timer(duk_context *duk) { +JSValue duk_make_timer(JSContext *js, JSValueConst this, int argc, JSValueConst *argv) +{ void *sym = duk_get_heapptr(duk, 0); - double secs = duk_to_number(duk, 1); + double secs = js_to_number(argv[1]); void *obj = duk_get_heapptr(duk, 2); struct callee *c = malloc(sizeof(*c)); c->fn = sym; @@ -1429,7 +1398,7 @@ duk_ret_t duk_make_timer(duk_context *duk) { return 1; } -#define DUK_FUNC(NAME, ARGS) duk_push_c_function(duk, duk_##NAME, ARGS); duk_put_global_string(duk, #NAME); +#define DUK_FUNC(NAME, ARGS) JS_CFUNC_DEF(NAME, ARGS, duk_##NAME); void ffi_load() { diff --git a/source/engine/ffi.h b/source/engine/ffi.h index e64b49c..78bce2f 100644 --- a/source/engine/ffi.h +++ b/source/engine/ffi.h @@ -1,20 +1,19 @@ #ifndef FFI_H #define FFI_H -#include "duktape.h" +#include "quickjs/quickjs.h" #include void ffi_load(); +void duk_dump_stack(JSContext *js); -void duk_dump_stack(duk_context *duk); +JSValue vec2js(cpVect v); +cpVect js2vec2(JSValue v); -duk_idx_t vect2duk(cpVect v); -cpVect duk2vec2(duk_context *duk, int p); +JSValue bitmask2js(cpBitmask mask); +cpBitmask js2bitmask(JSValue v); -void bitmask2duk(duk_context *duk, cpBitmask mask); -cpBitmask duk2bitmask(duk_context *duk, int p); - -struct color duk2color(duk_context *duk, int p); +struct color duk2color(JSValue v); #endif diff --git a/source/engine/gameobject.c b/source/engine/gameobject.c index 6ab3cb5..7335449 100644 --- a/source/engine/gameobject.c +++ b/source/engine/gameobject.c @@ -158,8 +158,8 @@ int MakeGameobject() .shape_cbs = NULL, }; - go.cbs.begin.obj = NULL; - go.cbs.separate.obj = NULL; + go.cbs.begin.obj = JS_NULL; + go.cbs.separate.obj = JS_NULL; go.body = cpSpaceAddBody(space, cpBodyNew(go.mass, 1.f)); diff --git a/source/engine/input.c b/source/engine/input.c index a38103d..0fed9de 100644 --- a/source/engine/input.c +++ b/source/engine/input.c @@ -67,7 +67,7 @@ static void pawn_call_keydown(int key) { for (int i = 0; i < arrlen(pawns); i++) { if (!pawns[i] || script_eval_setup("input_num_pressed", pawns[i])) continue; - duk_push_int(duk, key); +//TODO duk_push_int(duk, key); script_eval_exec(1); } } @@ -123,7 +123,7 @@ void char_cb(GLFWwindow *w, unsigned int codepoint) char out[2]; out[0] = (char)codepoint; out[1] = 0; - duk_push_string(duk, out); +//TODO duk_push_string(duk, out); script_eval_exec(1); } } diff --git a/source/engine/mus-config.h b/source/engine/mus-config.h deleted file mode 100644 index e69de29..0000000 diff --git a/source/engine/script.c b/source/engine/script.c index 6c30855..8d35cd5 100644 --- a/source/engine/script.c +++ b/source/engine/script.c @@ -14,7 +14,7 @@ #include "sys/stat.h" #include "sys/types.h" -duk_context *duk = NULL; +JSContext *js = NULL; static int load_prefab(const char *fpath, const struct stat *sb, int typeflag) { if (typeflag != FTW_F) @@ -27,7 +27,7 @@ static int load_prefab(const char *fpath, const struct stat *sb, int typeflag) { } void script_init() { - duk = duk_create_heap_default(); + js = duk_create_heap_default(); ffi_load(); /* Load all prefabs into memory */ @@ -37,7 +37,7 @@ void script_init() { } void script_run(const char *script) { - duk_eval_string(duk, script); + duk_eval_string(js, script); } time_t file_mod_secs(const char *file) { @@ -47,12 +47,12 @@ time_t file_mod_secs(const char *file) { } void duk_run_err() { - duk_get_prop_string(duk, -1, "lineNumber"); - duk_get_prop_string(duk, -2, "fileName"); - duk_get_prop_string(duk, -3, "stack"); - mYughLog(1, 2, duk_get_int(duk, -3), duk_safe_to_string(duk, -2), "%s\n%s", duk_safe_to_string(duk, -4), duk_safe_to_string(duk, -1)); + duk_get_prop_string(js, -1, "lineNumber"); + duk_get_prop_string(js, -2, "fileName"); + duk_get_prop_string(js, -3, "stack"); + mYughLog(1, 2, duk_get_int(js, -3), duk_safe_to_string(js, -2), "%s\n%s", duk_safe_to_string(js, -4), duk_safe_to_string(js, -1)); - duk_pop_3(duk); + duk_pop_3(js); } int script_dofile(const char *file) { @@ -61,19 +61,19 @@ int script_dofile(const char *file) { YughError("Can't find file %s.", file); return 1; } - duk_push_string(duk, script); + duk_push_string(js, script); free(script); - duk_push_string(duk, file); + duk_push_string(js, file); - if (duk_pcompile(duk, 0) != 0) { + if (duk_pcompile(js, 0) != 0) { duk_run_err(); return 1; } - if (duk_pcall(duk, 0)) + if (duk_pcall(js, 0)) duk_run_err(); - duk_pop(duk); + duk_pop(js); return file_mod_secs(file); } @@ -102,48 +102,48 @@ void script_call(const char *f) { s is the function to call on that object */ void script_eval_w_env(const char *s, void *env) { - duk_push_heapptr(duk, env); - duk_push_string(duk, s); + duk_push_heapptr(js, env); + duk_push_string(js, s); - if (!duk_has_prop(duk, -2)) { - duk_pop(duk); + if (!duk_has_prop(js, -2)) { + duk_pop(js); return; } - duk_push_string(duk, s); - if (duk_pcall_prop(duk, -2, 0)) + duk_push_string(js, s); + if (duk_pcall_prop(js, -2, 0)) duk_run_err(); - duk_pop_2(duk); + duk_pop_2(js); } int script_eval_setup(const char *s, void *env) { - duk_push_heapptr(duk, env); + duk_push_heapptr(js, env); - if (!duk_has_prop_string(duk, -1, s)) { - duk_pop(duk); + if (!duk_has_prop_string(js, -1, s)) { + duk_pop(js); return 1; } - duk_push_string(duk, s); + duk_push_string(js, s); return 0; } void script_eval_exec(int argc) { - if (duk_pcall_prop(duk, -2 - argc, argc)) + if (duk_pcall_prop(js, -2 - argc, argc)) duk_run_err(); - duk_pop_2(duk); + duk_pop_2(js); } void script_call_sym(void *sym) { - duk_push_heapptr(duk, sym); - if (duk_pcall(duk, 0)) + duk_push_heapptr(js, sym); + if (duk_pcall(js, 0)) duk_run_err(); - duk_pop(duk); + duk_pop(js); } void script_call_sym_args(void *sym, void *args) @@ -157,9 +157,9 @@ struct callee *guis = NULL; struct callee *debugs = NULL; struct callee *nk_guis = NULL; -void unregister_obj(void *obj) +void unregister_obj(JSValue obj) { - for (int i = arrlen(updates)-1; i >= 0; i--) +/* for (int i = arrlen(updates)-1; i >= 0; i--) if (updates[i].obj == obj) arrdel(updates, i); for (int i = arrlen(physics)-1; i >= 0; i--) @@ -173,6 +173,7 @@ void unregister_obj(void *obj) for (int i = arrlen(debugs)-1; i >= 0; i--) if (debugs[i].obj == obj) arrdel(debugs,i); +*/ } void register_debug(struct callee c) { @@ -182,10 +183,12 @@ void register_debug(struct callee c) { void unregister_gui(struct callee c) { for (int i = arrlen(guis)-1; i >= 0; i--) { +/* if (guis[i].obj == c.obj && guis[i].fn == c.fn) { arrdel(guis, i); return; } + */ } } @@ -205,16 +208,16 @@ void register_physics(struct callee c) { void setup_callee(struct callee c) { - duk_push_heapptr(duk, c.fn); - duk_push_heapptr(duk, c.obj); + duk_push_heapptr(js, c.fn); + duk_push_heapptr(js, c.obj); } void exec_callee(int argc) { - if (duk_pcall_method(duk, argc)) + if (duk_pcall_method(js, argc)) duk_run_err(); - duk_pop(duk); + duk_pop(js); } void call_callee(struct callee *c) { @@ -226,14 +229,14 @@ void call_callee(struct callee *c) { void callee_dbl(struct callee c, double d) { setup_callee(c); - duk_push_number(duk, d); + duk_push_number(js, d); exec_callee(1); } void callee_int(struct callee c, int i) { setup_callee(c); - duk_push_int(duk, i); + duk_push_int(js, i); exec_callee(1); } diff --git a/source/engine/script.h b/source/engine/script.h index 6535b11..6a163ea 100644 --- a/source/engine/script.h +++ b/source/engine/script.h @@ -1,15 +1,15 @@ #ifndef SCRIPT_H #define SCRIPT_H -#include "duktape.h" +#include "quickjs/quickjs.h" #include +#include -extern duk_context *duk; - +JSContext *js; struct callee { - void *fn; - void *obj; + JSValue fn; + JSValue obj; }; void script_init(); @@ -43,7 +43,7 @@ void register_debug(struct callee c); void register_nk_gui(struct callee c); void call_gui(); void call_nk_gui(); -void unregister_obj(void *obj); +void unregister_obj(JSValue obj); void register_physics(struct callee c); void call_physics(double dt); diff --git a/source/engine/yugine.c b/source/engine/yugine.c index acccae2..cb9de8f 100644 --- a/source/engine/yugine.c +++ b/source/engine/yugine.c @@ -21,8 +21,6 @@ #include #include -#include "duktape.h" - #include "2dphysics.h" #include