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netsurf/javascript/duktape/duk_config.h

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/*
* Determine platform features, select feature selection defines
* (e.g. _XOPEN_SOURCE), include system headers, and define DUK_USE_xxx
* defines which are (only) checked in Duktape internal code for
* activated features. Duktape feature selection is based on automatic
* feature detection, user supplied DUK_OPT_xxx defines, and optionally
* a "duk_custom.h" user header (if DUK_OPT_HAVE_CUSTOM_H is defined).
*
* When compiling Duktape, DUK_COMPILING_DUKTAPE is set, and this file
* is included before any system headers are included. Feature selection
* defines (e.g. _XOPEN_SOURCE) are defined here before any system headers
* are included (which is a requirement for system headers to work correctly).
* This file is responsible for including all system headers and contains
* all platform dependent cruft in general. When compiling user code,
* DUK_COMPILING_DUKTAPE is not defined, and we must avoid e.g. defining
* unnecessary feature selection defines.
*
* The general order of handling:
* - Compiler feature detection (require no includes)
* - Intermediate platform detection (-> easier platform defines)
* - Platform detection, system includes, byte order detection, etc
* - ANSI C wrappers (e.g. DUK_MEMCMP), wrappers for constants, etc
* - DUK_USE_xxx defines are resolved based on input defines
* - Duktape Date provider settings
* - Final sanity checks
*
* DUK_F_xxx are internal feature detection macros which should not be
* used outside this header.
*
* Useful resources:
*
* http://sourceforge.net/p/predef/wiki/Home/
* http://sourceforge.net/p/predef/wiki/Architectures/
* http://stackoverflow.com/questions/5919996/how-to-detect-reliably-mac-os-x-ios-linux-windows-in-c-preprocessor
* http://en.wikipedia.org/wiki/C_data_types#Fixed-width_integer_types
*
* Preprocessor defines available in a particular GCC:
*
* gcc -dM -E - </dev/null # http://www.brain-dump.org/blog/entry/107
*/
#ifndef DUK_CONFIG_H_INCLUDED
#define DUK_CONFIG_H_INCLUDED
/*
* Compiler features
*/
#undef DUK_F_C99
#if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L)
#define DUK_F_C99
#endif
#undef DUK_F_CPP
#if defined(__cplusplus)
#define DUK_F_CPP
#endif
#undef DUK_F_CPP11
#if defined(__cplusplus) && (__cplusplus >= 201103L)
#define DUK_F_CPP11
#endif
/*
* Provides the duk_rdtsc() inline function (if available), limited to
* GCC C99.
*
* See: http://www.mcs.anl.gov/~kazutomo/rdtsc.html
*/
/* XXX: more accurate detection of what gcc versions work; more inline
* asm versions for other compilers.
*/
#if defined(__GNUC__) && defined(__i386__) && defined(DUK_F_C99) && \
!defined(__cplusplus) /* unsigned long long not standard */
static __inline__ unsigned long long duk_rdtsc(void) {
unsigned long long int x;
__asm__ volatile (".byte 0x0f, 0x31" : "=A" (x));
return x;
}
#define DUK_USE_RDTSC() duk_rdtsc()
#elif defined(__GNUC__) && defined(__x86_64__) && defined(DUK_F_C99) && \
!defined(__cplusplus) /* unsigned long long not standard */
static __inline__ unsigned long long duk_rdtsc(void) {
unsigned hi, lo;
__asm__ __volatile__ ("rdtsc" : "=a"(lo), "=d"(hi));
return ((unsigned long long) lo) | (((unsigned long long) hi) << 32);
}
#define DUK_USE_RDTSC() duk_rdtsc()
#else
/* not available */
#undef DUK_USE_RDTSC
#endif
/*
* Intermediate platform, architecture, and compiler detection. These are
* hopelessly intertwined - e.g. architecture defines depend on compiler etc.
*
* Provide easier defines for platforms and compilers which are often tricky
* or verbose to detect. The intent is not to provide intermediate defines for
* all features; only if existing feature defines are inconvenient.
*/
/* Intel x86 (32-bit) */
#if 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__)
#define DUK_F_X86
#endif
/* AMD64 (64-bit) */
#if defined(__amd64__) || defined(__amd64) || \
defined(__x86_64__) || defined(__x86_64) || \
defined(_M_X64) || defined(_M_AMD64)
#define DUK_F_X64
#endif
/* X32: 64-bit with 32-bit pointers (allows packed tvals). X32 support is
* not very mature yet.
*
* https://sites.google.com/site/x32abi/
*/
#if defined(DUK_F_X64) && \
(defined(_ILP32) || defined(__ILP32__))
#define DUK_F_X32
/* define only one of: DUK_F_X86, DUK_F_X32, or DUK_F_X64 */
#undef DUK_F_X64
#undef DUK_F_X86
#endif
/* ARM */
#if defined(__arm__) || defined(__thumb__) || defined(_ARM) || defined(_M_ARM)
#define DUK_F_ARM
#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(__mips64) || defined(__mips64__) || \
defined(__mips_n64)
#define DUK_F_MIPS64
#else
#define DUK_F_MIPS32
#endif
#endif
/* 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
/* 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
/* PowerPC */
#if defined(__powerpc) || defined(__powerpc__) || defined(__PPC__)
#define DUK_F_PPC
#endif
/* Linux */
#if defined(__linux) || defined(__linux__) || defined(linux)
#define DUK_F_LINUX
#endif
/* FreeBSD */
#if defined(__FreeBSD__) || defined(__FreeBSD)
#define DUK_F_FREEBSD
#endif
/* NetBSD */
#if defined(__NetBSD__) || defined(__NetBSD)
#define DUK_F_NETBSD
#endif
/* OpenBSD */
#if defined(__OpenBSD__) || defined(__OpenBSD)
#define DUK_F_OPENBSD
#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
/* Generic Unix (includes Cygwin) */
#if defined(__unix) || defined(__unix__) || defined(unix) || \
defined(DUK_F_LINUX) || defined(DUK_F_BSD)
#define DUK_F_UNIX
#endif
/* Cygwin */
#if defined(__CYGWIN__)
#define DUK_F_CYGWIN
#endif
/* Windows (32-bit or above) */
#if defined(_WIN32) || defined(WIN32) || defined(_WIN64) || defined(WIN64) || \
defined(__WIN32__) || defined(__TOS_WIN__) || defined(__WINDOWS__)
#define DUK_F_WINDOWS
#endif
#if defined(__APPLE__)
#define DUK_F_APPLE
#endif
/* Atari ST TOS. __TOS__ defined by PureC (which doesn't work as a target now
* because int is 16-bit, to be fixed). No platform define in VBCC apparently,
* so to use with VBCC, user must define '__TOS__' manually.
*/
#if defined(__TOS__)
#define DUK_F_TOS
#endif
/* AmigaOS. Neither AMIGA nor __amigaos__ is defined on VBCC, so user must
* define 'AMIGA' manually.
*/
#if defined(AMIGA) || defined(__amigaos__)
#define DUK_F_AMIGAOS
#endif
/* Flash player (e.g. Crossbridge) */
#if defined(__FLASHPLAYER__)
#define DUK_F_FLASHPLAYER
#endif
/* Emscripten (provided explicitly by user), improve if possible */
#if defined(EMSCRIPTEN)
#define DUK_F_EMSCRIPTEN
#endif
/* QNX */
#if defined(__QNX__)
#define DUK_F_QNX
#endif
/* TI-Nspire (using Ndless) */
#if defined(_TINSPIRE)
#define DUK_F_TINSPIRE
#endif
/* GCC and GCC version convenience define. */
#if defined(__GNUC__)
#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
/* Clang */
#if defined(__clang__)
#define DUK_F_CLANG
/* It seems clang also defines __GNUC__, so undo the GCC detection. */
#if defined(DUK_F_GCC)
#undef DUK_F_GCC
#endif
#if defined(DUK_F_GCC_VERSION)
#undef DUK_F_GCC_VERSION
#endif
#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 */
/* MinGW */
#if defined(__MINGW32__) || defined(__MINGW64__)
/* NOTE: Also GCC flags are detected (DUK_F_GCC etc). */
#define DUK_F_MINGW
#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(__VBCC__)
#define DUK_F_VBCC
#endif
/*
* Platform detection, system includes, Date provider selection.
*
* Feature selection (e.g. _XOPEN_SOURCE) must happen before any system
* headers are included. This header should avoid providing any feature
* selection defines when compiling user code (only when compiling Duktape
* itself). If a feature selection option is required for user code to
* compile correctly (e.g. it is needed for type detection), it should
* probably be -checked- here, not defined here.
*
* Date provider selection seems a bit out-of-place here, but since
* the date headers and provider functions are heavily platform
* specific, there's little point in duplicating the platform if-else
* ladder. All platform specific Date provider functions are in
* duk_bi_date.c; here we provide appropriate #defines to enable them,
* and include all the necessary system headers so that duk_bi_date.c
* compiles. Date "providers" are:
*
* NOW = getting current time (required)
* TZO = getting local time offset (required)
* PRS = parse datetime (optional)
* FMT = format datetime (optional)
*
* There's a lot of duplication here, unfortunately, because many
* platforms have similar (but not identical) headers, Date providers,
* etc. The duplication could be removed by more complicated nested
* #ifdefs, but it would then be more difficult to make fixes which
* affect only a specific platform.
*
* XXX: add a way to provide custom functions to provide the critical
* primitives; this would be convenient when porting to unknown platforms
* (rather than muck with Duktape internals).
*/
#if defined(DUK_COMPILING_DUKTAPE) && \
(defined(DUK_F_LINUX) || defined(DUK_F_EMSCRIPTEN))
/* A more recent Emscripten (2014-05) seems to lack "linux" environment
* defines, so check for Emscripten explicitly.
*/
#ifndef _POSIX_C_SOURCE
#define _POSIX_C_SOURCE 200809L
#endif
#ifndef _GNU_SOURCE
#define _GNU_SOURCE /* e.g. getdate_r */
#endif
#ifndef _XOPEN_SOURCE
#define _XOPEN_SOURCE /* e.g. strptime */
#endif
#endif
#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
#undef DUK_F_MSVC_CRT_SECURE
#if defined(DUK_F_WINDOWS) && defined(_MSC_VER)
/* http://msdn.microsoft.com/en-us/library/8ef0s5kh.aspx
* http://msdn.microsoft.com/en-us/library/wd3wzwts.aspx
* Seem to be available since VS2005.
*/
#if (_MSC_VER >= 1400)
/* VS2005+, secure CRT functions are preferred. Windows Store applications
* (and probably others) should use these.
*/
#define DUK_F_MSVC_CRT_SECURE
#endif
#if (_MSC_VER < 1700)
/* VS2012+ has stdint.h, < VS2012 does not (but it's available for download). */
#define DUK_F_NO_STDINT_H
#endif
/* 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
#endif /* DUK_F_WINDOWS && _MSC_VER */
#if defined(DUK_F_TOS) || defined(DUK_F_BCC)
#define DUK_F_NO_STDINT_H
#endif
/* Workaround for older C++ compilers before including <inttypes.h>,
* 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(__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 <TargetConditionals.h>
#include <architecture/byte_order.h>
#include <limits.h>
#include <sys/param.h>
#include <sys/time.h>
#include <time.h>
#elif defined(DUK_F_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 <sys/types.h>
#include <sys/endian.h>
#include <limits.h>
#include <sys/param.h>
#include <sys/time.h>
#include <time.h>
#elif defined(DUK_F_BSD)
/* other 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 <sys/types.h>
#include <sys/endian.h>
#include <limits.h>
#include <sys/param.h>
#include <sys/time.h>
#include <time.h>
#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 <limits.h>
#include <time.h>
#elif defined(DUK_F_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 <limits.h>
#include <time.h>
#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 <limits.h>
#include <time.h>
#ifndef UINTPTR_MAX
#define UINTPTR_MAX UINT_MAX
#endif
#else
#error AmigaOS but not M68K/PPC, not supported now
#endif
#elif defined(DUK_F_WINDOWS)
/* Windows 32-bit and 64-bit are currently the same. */
/* MSVC does not have sys/param.h */
#define DUK_USE_DATE_NOW_WINDOWS
#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.
*/
#include <windows.h>
#include <limits.h>
#elif defined(DUK_F_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 <endian.h>
#include <limits.h>
#include <sys/param.h>
#include <sys/time.h>
#include <time.h>
#elif defined(DUK_F_QNX)
#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 <sys/types.h>
#include <limits.h>
#include <sys/param.h>
#include <sys/time.h>
#include <time.h>
#elif defined(DUK_F_TINSPIRE)
#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 <sys/types.h>
#include <limits.h>
#include <sys/param.h>
#include <sys/time.h>
#include <time.h>
#elif defined(DUK_F_LINUX)
#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 <sys/types.h>
#if defined(DUK_F_BCC)
/* no endian.h */
#else
#include <endian.h>
#endif /* DUK_F_BCC */
#include <limits.h>
#include <sys/param.h>
#include <sys/time.h>
#include <time.h>
#elif defined(__posix)
/* 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 <sys/types.h>
#include <endian.h>
#include <limits.h>
#include <sys/param.h>
#include <sys/time.h>
#include <time.h>
#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 <sys/types.h>
#include <endian.h>
#include <limits.h>
#include <sys/param.h>
#include <sys/time.h>
#include <time.h>
#else
/* Other UNIX, hopefully others */
#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 <sys/types.h>
#if defined(DUK_F_BCC)
/* no endian.h */
#else
#include <endian.h>
#endif /* DUK_F_BCC */
#include <limits.h>
#include <sys/param.h>
#include <sys/time.h>
#include <time.h>
#endif
/* Shared includes */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdarg.h> /* varargs */
#include <setjmp.h>
#include <stddef.h> /* e.g. ptrdiff_t */
#if defined(DUK_F_NO_STDINT_H)
/* stdint.h not available */
#else
/* Technically C99 (C++11) but found in many systems. Note the workaround
* above for some C++ compilers (__STDC_LIMIT_MACROS etc).
*/
#include <stdint.h>
#endif
#include <math.h>
#if (defined(DUK_F_C99) || defined(DUK_F_CPP11)) && \
!defined(DUK_F_BCC)
/* ULL / LL preprocessor constants should be avoided because they're not
* always available. With suitable options, some compilers will support
* 64-bit integer types but won't support ULL / LL preprocessor constants.
* Assume C99/C++11 environments have these. However, BCC is nominally
* C99 but doesn't support these constants.
*/
#define DUK_F_ULL_CONSTS
#endif
/*
* Detection for specific libc variants (like uclibc) and other libc specific
* features. Potentially depends on the #includes above.
*/
#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 architecture.
* XXX: unsure about BCC correctness.
*/
#if defined(DUK_F_X86) || defined(DUK_F_X32) || \
defined(DUK_F_BCC) || \
(defined(__WORDSIZE) && (__WORDSIZE == 32))
#define DUK_F_32BIT_PTRS
#elif defined(DUK_F_X64) || \
(defined(__WORDSIZE) && (__WORDSIZE == 64))
#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 <inttypes.h>
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) || defined(DUK_F_MSVC))
/* Both MinGW and MSVC have a 64-bit type. */
#define DUK_F_HAVE_64BIT
typedef unsigned long duk_uint64_t;
typedef signed long 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 'int'. */
typedef duk_small_int_t duk_bool_t;
#define DUK_BOOL_MIN DUK_SMALL_INT_MIN
#define DUK_BOOL_MAX DUK_SMALL_INT_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
/* 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 for public API calls. */
typedef struct duk_hthread duk_context;
/*
* Check whether we should use 64-bit integers
*/
/* 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
/*
* Alignment requirement and support for unaligned accesses
*
* Assume unaligned accesses are not supported unless specifically allowed
* in the target platform. Some platforms may support unaligned accesses
* but alignment to 4 or 8 may still be desirable.
*/
#undef DUK_USE_UNALIGNED_ACCESSES_POSSIBLE
#undef DUK_USE_ALIGN_BY
#if defined(DUK_F_EMSCRIPTEN)
/* Required on at least some targets, so use whenever Emscripten used,
* regardless of compilation target.
*/
#define DUK_USE_ALIGN_BY 8
#elif defined(DUK_F_ARM)
#define DUK_USE_ALIGN_BY 4
#elif defined(DUK_F_MIPS32)
/* Based on 'make checkalign' there are no alignment requirements on
* Linux MIPS except for doubles, which need align by 4. Alignment
* requirements vary based on target though.
*/
#define DUK_USE_ALIGN_BY 4
#elif defined(DUK_F_MIPS64)
/* Good default is a bit arbitrary because alignment requirements
* depend on target. See https://github.com/svaarala/duktape/issues/102.
*/
#define DUK_USE_ALIGN_BY 8
#elif defined(DUK_F_SUPERH)
/* Based on 'make checkalign' there are no alignment requirements on
* Linux SH4, but align by 4 is probably a good basic default.
*/
#define DUK_USE_ALIGN_BY 4
#elif defined(DUK_F_X86) || defined(DUK_F_X32) || defined(DUK_F_X64) || \
defined(DUK_F_BCC)
/* XXX: This is technically not guaranteed because it's possible to configure
* an x86 to require aligned accesses with Alignment Check (AC) flag.
*/
#define DUK_USE_ALIGN_BY 1
#define DUK_USE_UNALIGNED_ACCESSES_POSSIBLE
#else
/* Unknown, use safe default */
#define DUK_USE_ALIGN_BY 8
#endif
/* User forced alignment to 4 or 8. */
#if defined(DUK_OPT_FORCE_ALIGN)
#undef DUK_USE_ALIGN_BY
#undef DUK_USE_UNALIGNED_ACCESSES_POSSIBLE
#if (DUK_OPT_FORCE_ALIGN == 4)
#define DUK_USE_ALIGN_BY 4
#elif (DUK_OPT_FORCE_ALIGN == 8)
#define DUK_USE_ALIGN_BY 8
#else
#error invalid DUK_OPT_FORCE_ALIGN value
#endif
#endif
/* Compiler specific hackery needed to force struct size to match aligment,
* see e.g. duk_hbuffer.h.
*
* http://stackoverflow.com/questions/11130109/c-struct-size-alignment
* http://stackoverflow.com/questions/10951039/specifying-64-bit-alignment
*/
#if defined(DUK_F_MSVC)
#define DUK_USE_PACK_MSVC_PRAGMA
#elif defined(DUK_F_GCC)
#define DUK_USE_PACK_GCC_ATTR
#elif defined(DUK_F_CLANG)
#define DUK_USE_PACK_CLANG_ATTR
#else
#define DUK_USE_PACK_DUMMY_MEMBER
#endif
#ifdef DUK_USE_UNALIGNED_ACCESSES_POSSIBLE
#define DUK_USE_HASHBYTES_UNALIGNED_U32_ACCESS
#else
#undef DUK_USE_HASHBYTES_UNALIGNED_U32_ACCESS
#endif
/* 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 defined(DUK_USE_UNALIGNED_ACCESSES_POSSIBLE) && (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
/*
* 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".
*/
#undef DUK_F_BYTEORDER
#undef DUK_USE_BYTEORDER_FORCED
/* DUK_F_BYTEORDER is set as an intermediate value when detection
* succeeds, to one of:
* 1 = little endian
* 2 = mixed (arm hybrid) endian
* 3 = big endian
*/
/* For custom platforms allow user to define byteorder explicitly.
* Since endianness headers are not standardized, this is a useful
* workaround for custom platforms for which endianness detection
* is not directly supported. Perhaps custom hardware is used and
* user cannot submit upstream patches.
*/
#if defined(DUK_OPT_FORCE_BYTEORDER)
#if (DUK_OPT_FORCE_BYTEORDER == 1)
#define DUK_F_BYTEORDER 1
#elif (DUK_OPT_FORCE_BYTEORDER == 2)
#define DUK_F_BYTEORDER 2
#elif (DUK_OPT_FORCE_BYTEORDER == 3)
#define DUK_F_BYTEORDER 3
#else
#error invalid DUK_OPT_FORCE_BYTEORDER value
#endif
#define DUK_USE_BYTEORDER_FORCED
#endif /* DUK_OPT_FORCE_BYTEORDER */
/* 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.
*/
#if !defined(DUK_F_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__)
/* Integer 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_F_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_F_BYTEORDER 2
#elif !defined(__FLOAT_WORD_ORDER) && !defined(_FLOAT_WORD_ORDER)
/* Float word order not known, assume not a hybrid. */
#define DUK_F_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__)
/* Integer 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_F_BYTEORDER 3
#elif !defined(__FLOAT_WORD_ORDER) && !defined(_FLOAT_WORD_ORDER)
/* Float word order not known, assume not a hybrid. */
#define DUK_F_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_F_BYTEORDER) */
/* 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__.
* http://gcc.gnu.org/onlinedocs/cpp/Common-Predefined-Macros.html
*/
#if !defined(DUK_F_BYTEORDER) && defined(__BYTE_ORDER__)
#if defined(__ORDER_LITTLE_ENDIAN__) && (__BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__)
/* Integer little endian */
#if defined(__FLOAT_WORD_ORDER__) && defined(__ORDER_LITTLE_ENDIAN__) && \
(__FLOAT_WORD_ORDER__ == __ORDER_LITTLE_ENDIAN__)
#define DUK_F_BYTEORDER 1
#elif defined(__FLOAT_WORD_ORDER__) && defined(__ORDER_BIG_ENDIAN__) && \
(__FLOAT_WORD_ORDER__ == __ORDER_BIG_ENDIAN__)
#define DUK_F_BYTEORDER 2
#elif !defined(__FLOAT_WORD_ORDER__)
/* Float word order not known, assume not a hybrid. */
#define DUK_F_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__)
/* Integer big endian */
#if defined(__FLOAT_WORD_ORDER__) && defined(__ORDER_BIG_ENDIAN__) && \
(__FLOAT_WORD_ORDER__ == __ORDER_BIG_ENDIAN__)
#define DUK_F_BYTEORDER 3
#elif !defined(__FLOAT_WORD_ORDER__)
/* Float word order not known, assume not a hybrid. */
#define DUK_F_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_F_BYTEORDER) && defined(__BYTE_ORDER__) */
/* Atari ST TOS */
#if !defined(DUK_F_BYTEORDER) && defined(DUK_F_TOS)
#define DUK_F_BYTEORDER 3
#endif
/* AmigaOS on M68K or PPC */
#if !defined(DUK_F_BYTEORDER) && defined(DUK_F_AMIGAOS)
#if defined(DUK_F_M68K) || defined(DUK_F_PPC)
#define DUK_F_BYTEORDER 3
#endif
#endif
/* On Windows, assume we're little endian. Even Itanium which has a
* configurable endianness runs little endian in Windows.
*/
#if !defined(DUK_F_BYTEORDER) && defined(DUK_F_WINDOWS)
/* XXX: verify that Windows on ARM is little endian for floating point
* values too.
*/
#define DUK_F_BYTEORDER 1
#endif /* Windows */
/* Crossbridge should work with the standard byteorder #ifdefs. It doesn't
* provide _FLOAT_WORD_ORDER but the standard approach now covers that case
* too. This has been left here just in case.
*/
#if !defined(DUK_F_BYTEORDER) && defined(DUK_F_FLASHPLAYER)
#define DUK_F_BYTEORDER 1
#endif
/* 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 - </dev/null | grep -ni endian
* 67:#define __LITTLEENDIAN__ 1
* $ /opt/qnx650/host/linux/x86/usr/bin/mips-unknown-nto-qnx6.5.0-gcc -dM -E - </dev/null | grep -ni endian
* 81:#define __BIGENDIAN__ 1
* $ /opt/qnx650/host/linux/x86/usr/bin/arm-unknown-nto-qnx6.5.0-gcc -dM -E - </dev/null | grep -ni endian
* 70:#define __LITTLEENDIAN__ 1
*/
#if !defined(DUK_F_BYTEORDER) && defined(DUK_F_QNX)
/* XXX: ARM hybrid? */
#if defined(__LITTLEENDIAN__)
#define DUK_F_BYTEORDER 1
#elif defined(__BIGENDIAN__)
#define DUK_F_BYTEORDER 3
#endif
#endif
/* Bruce's C Compiler (BCC), assume we're on x86. */
#if !defined(DUK_F_BYTEORDER) && defined(DUK_F_BCC)
#define DUK_F_BYTEORDER 1
#endif
/* Check whether or not byte order detection worked based on the intermediate
* define, and define final values. If detection failed, #error out.
*/
#if defined(DUK_F_BYTEORDER)
#if (DUK_F_BYTEORDER == 1)
#define DUK_USE_INTEGER_LE
#define DUK_USE_DOUBLE_LE
#elif (DUK_F_BYTEORDER == 2)
#define DUK_USE_INTEGER_LE /* integer endianness is little on purpose */
#define DUK_USE_DOUBLE_ME
#elif (DUK_F_BYTEORDER == 3)
#define DUK_USE_INTEGER_BE
#define DUK_USE_DOUBLE_BE
#else
#error unsupported: byte order detection failed (internal error, should not happen)
#endif /* byte order */
#else
#error unsupported: byte order detection failed
#endif /* defined(DUK_F_BYTEORDER) */
/*
* 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.
*/
#undef DUK_USE_PACKED_TVAL_POSSIBLE
/* Strict C99 case: DUK_UINTPTR_MAX (= UINTPTR_MAX) should be very reliable */
#if !defined(DUK_USE_PACKED_TVAL_POSSIBLE) && defined(DUK_F_HAVE_INTTYPES) && defined(DUK_UINTPTR_MAX)
#if (DUK_UINTPTR_MAX <= 0xffffffffUL)
#define DUK_USE_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_USE_PACKED_TVAL_POSSIBLE) && defined(DUK_UINTPTR_MAX) && !defined(DUK_UINTPTR_MAX_COMPUTED)
#if (DUK_UINTPTR_MAX <= 0xffffffffUL)
#define DUK_USE_PACKED_TVAL_POSSIBLE
#endif
#endif
/* DUK_SIZE_MAX (= SIZE_MAX) is often reliable */
#if !defined(DUK_USE_PACKED_TVAL_POSSIBLE) && defined(DUK_SIZE_MAX) && !defined(DUK_SIZE_MAX_COMPUTED)
#if DUK_SIZE_MAX <= 0xffffffffUL
#define DUK_USE_PACKED_TVAL_POSSIBLE
#endif
#endif
/* M68K: packed always possible */
#if !defined(DUK_USE_PACKED_TVAL_POSSIBLE) && defined(DUK_F_M68K)
#define DUK_USE_PACKED_TVAL_POSSIBLE
#endif
/* PPC: packed always possible */
#if !defined(DUK_USE_PACKED_TVAL_POSSIBLE) && defined(DUK_F_PPC)
#define DUK_USE_PACKED_TVAL_POSSIBLE
#endif
/* With Emscripten, force unpacked duk_tval just to be safe, as it seems to
* break at least on Firefox (probably IEEE double arithmetic is not 100%
* supported, especially for NaNs).
*/
#if defined(DUK_USE_PACKED_TVAL_POSSIBLE) && defined(DUK_F_EMSCRIPTEN)
#undef DUK_USE_PACKED_TVAL_POSSIBLE
#endif
/* Microsoft Visual Studio 2010 on x64 fails the above rules and tries to
* use a packed type. Force unpacked on x64 in general.
*/
#if defined(DUK_USE_PACKED_TVAL_POSSIBLE) && defined(DUK_F_X64)
#undef DUK_USE_PACKED_TVAL_POSSIBLE
#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
/*
* Detection of double constants and math related functions. Availability
* of constants and math functions is a significant porting concern.
*
* INFINITY/HUGE_VAL is problematic on GCC-3.3: it causes an overflow warning
* and there is no pragma in GCC-3.3 to disable it. Using __builtin_inf()
* avoids this problem for some reason.
*/
#define DUK_DOUBLE_2TO32 4294967296.0
#define DUK_DOUBLE_2TO31 2147483648.0
#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)
#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).
*/
extern double duk_computed_infinity;
#define DUK_USE_COMPUTED_INFINITY
#define DUK_DOUBLE_INFINITY duk_computed_infinity
#endif
#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)
#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).
*/
extern double duk_computed_nan;
#define DUK_USE_COMPUTED_NAN
#define DUK_DOUBLE_NAN duk_computed_nan
#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_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
#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
/* Some math functions are C99 only. This is also an issue with some
* embedded environments using uclibc where uclibc has been configured
* not to provide some functions. For now, use replacements whenever
* using uclibc.
*/
#undef DUK_USE_MATH_FMIN
#undef DUK_USE_MATH_FMAX
#undef DUK_USE_MATH_ROUND
#if defined(DUK_F_UCLIBC)
/* uclibc may be missing these */
#elif defined(DUK_F_AMIGAOS) && defined(DUK_F_VBCC)
/* vbcc + AmigaOS may be missing these */
#elif !defined(DUK_F_C99) && !defined(DUK_F_CPP11)
/* build is not C99 or C++11, play it safe */
#else
/* C99 or C++11, no known issues */
#define DUK_USE_MATH_FMIN
#define DUK_USE_MATH_FMAX
#define DUK_USE_MATH_ROUND
#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).
*/
#define DUK_FABS fabs
#define DUK_FMIN fmin
#define DUK_FMAX fmax
#define DUK_FLOOR floor
#define DUK_CEIL ceil
#define DUK_FMOD fmod
#define DUK_POW pow
#define DUK_ACOS acos
#define DUK_ASIN asin
#define DUK_ATAN atan
#define DUK_ATAN2 atan2
#define DUK_SIN sin
#define DUK_COS cos
#define DUK_TAN tan
#define DUK_EXP exp
#define DUK_LOG log
#define DUK_SQRT sqrt
/* NetBSD 6.0 x86 (at least) has a few problems with pow() semantics,
* see test-bug-netbsd-math-pow.js. Use NetBSD specific workaround.
* (This might be a wider problem; if so, generalize the define name.)
*/
#undef DUK_USE_POW_NETBSD_WORKAROUND
#if defined(DUK_F_NETBSD)
#define DUK_USE_POW_NETBSD_WORKAROUND
#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. See bugs/issue-2e9d9c2d761dabaf8136c0897b91a270d1a47147.yaml.
*/
#undef DUK_USE_PARANOID_DATE_COMPUTATION
#if !defined(DUK_F_C99)
#define DUK_USE_PARANOID_DATE_COMPUTATION
#endif
/*
* ANSI C string/memory function wrapper defines to allow easier workarounds.
* Also convenience macros like DUK_MEMZERO which may be mapped to existing
* platform function to zero memory (like the deprecated bzero).
*
* For instance, some platforms don't support zero-size memcpy correctly,
* some arcane uclibc versions have a buggy memcpy (but working memmove)
* and so on. Such broken platforms can be dealt with here.
*
* NOTE: 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 this is a practical issue, wrappers are again needed.
*/
typedef FILE duk_file;
#define DUK_STDIN stdin
#define DUK_STDOUT stdout
#define DUK_STDERR stderr
/* Special naming to avoid conflict with e.g. DUK_FREE() in duk_heap.h
* (which is unfortunately named).
*/
#define DUK_ANSI_MALLOC malloc
#define DUK_ANSI_REALLOC realloc
#define DUK_ANSI_CALLOC calloc
#define DUK_ANSI_FREE free
/* 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
*/
#if defined(DUK_F_UCLIBC)
#define DUK_MEMCPY memmove
#else
#define DUK_MEMCPY memcpy
#endif
#define DUK_MEMMOVE memmove
#define DUK_MEMCMP memcmp
#define DUK_MEMSET memset
#define DUK_STRLEN strlen
#define DUK_STRCMP strcmp
#define DUK_STRNCMP strncmp
#define DUK_PRINTF printf
#define DUK_FPRINTF fprintf
#define DUK_SPRINTF sprintf
#if defined(DUK_F_MSVC)
/* _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
#else
#define DUK_SNPRINTF snprintf
#endif
#define DUK_VSPRINTF vsprintf
#if defined(DUK_F_MSVC)
#if (_MSC_VER < 1600)
/* Older MSVC version are missing vsnprintf() but have _vsnprintf(). */
#define DUK_VSNPRINTF _vsnprintf
#else
#define DUK_VSNPRINTF vsnprintf
#endif
#else
#define DUK_VSNPRINTF vsnprintf
#endif /* DUK_F_MSVC */
#define DUK_SSCANF sscanf
#define DUK_VSSCANF vsscanf
#define DUK_FOPEN fopen
#define DUK_FCLOSE fclose
#define DUK_FREAD fread
#define DUK_FWRITE fwrite
#define DUK_FSEEK fseek
#define DUK_FTELL ftell
#define DUK_FFLUSH fflush
#define DUK_FPUTC fputc
#define DUK_MEMZERO(p,n) \
DUK_MEMSET((p), 0, (n))
/*
* Vararg macro wrappers. We need va_copy() which is defined in C99 / C++11,
* so an awkward replacement is needed for pre-C99 / pre-C++11 environments.
* This will quite likely need portability hacks for some non-C99 environments.
*/
#if defined(DUK_F_C99) || defined(DUK_F_CPP11)
/* C99 / C++11 and above: rely on va_copy() which is required.
* Omit parenthesis on macro right side on purpose to minimize differences
* to direct use.
*/
#define DUK_VA_COPY(dest,src) va_copy(dest,src)
#elif defined(DUK_F_GCC) || defined(DUK_F_CLANG)
/* GCC: assume we have __va_copy() in non-C99 mode, which should be correct
* for even quite old GCC versions. Clang matches GCC behavior.
*/
#define DUK_VA_COPY(dest,src) __va_copy(dest,src)
#else
/* Pre-C99: va_list type is implementation dependent. This replacement
* assumes it is a plain value so that a simple assignment will work.
* This is not the case on all platforms (it may be a single-array element,
* for instance).
*/
#define DUK_VA_COPY(dest,src) do { (dest) = (src); } while (0)
#endif
/*
* Miscellaneous ANSI C or other platform wrappers.
*/
#define DUK_ABORT abort
#define DUK_EXIT exit
/*
* Avoiding platform function pointers.
*
* On some platforms built-in functions may be implemented as macros or
* inline functions, so they can't be necessarily addressed by function
* pointers. This is certainly the case with some platform "polyfills"
* which provide missing C99/C++11 functions through macros, and may be
* the case with VS2013 (see GH-17).
*/
/* This is now the default: the cost in footprint is negligible. */
#define DUK_USE_AVOID_PLATFORM_FUNCPTRS
/*
* Macro hackery to convert e.g. __LINE__ to a string without formatting,
* see: http://stackoverflow.com/questions/240353/convert-a-preprocessor-token-to-a-string
*/
#define DUK_F_STRINGIFY_HELPER(x) #x
#define DUK_MACRO_STRINGIFY(x) DUK_F_STRINGIFY_HELPER(x)
/*
* Cause segfault macro.
*
* This is optionally used by panic handling to cause the program to segfault
* (instead of e.g. abort()) on panic. Valgrind will then indicate the C
* call stack leading to the panic.
*/
#define DUK_CAUSE_SEGFAULT() do { \
*((volatile duk_uint32_t *) NULL) = (duk_uint32_t) 0xdeadbeefUL; \
} while (0)
/*
* Macro for suppressing warnings for potentially unreferenced variables.
* The variables can be actually unreferenced or unreferenced in some
* specific cases only; for instance, if a variable is only debug printed,
* it is unreferenced when debug printing is disabled.
*
* (Introduced here because it's potentially compiler specific.)
*/
#define DUK_UNREF(x) do { \
(void) (x); \
} while (0)
/*
* DUK_NORETURN: macro for declaring a 'noreturn' function.
* Unfortunately the noreturn declaration may appear in various
* places of a function declaration, so the solution is to wrap
* the entire declaration inside the macro. Compiler support
* for using a noreturn declaration on function pointers varies;
* this macro must only be used for actual function declarations.
*
* http://gcc.gnu.org/onlinedocs/gcc-4.3.2//gcc/Function-Attributes.html
* http://clang.llvm.org/docs/LanguageExtensions.html
*/
#if defined(DUK_F_GCC_VERSION) && (DUK_F_GCC_VERSION >= 20500L)
/* since gcc-2.5 */
#define DUK_NORETURN(decl) decl __attribute__((noreturn))
#elif defined(__clang__)
/* syntax same as gcc */
#define DUK_NORETURN(decl) decl __attribute__((noreturn))
#elif defined(DUK_F_MSVC)
/* http://msdn.microsoft.com/en-us/library/aa235362(VS.60).aspx */
#define DUK_NORETURN(decl) __declspec(noreturn) decl
#else
/* Don't know how to declare a noreturn function, so don't do it; this
* may cause some spurious compilation warnings (e.g. "variable used
* uninitialized").
*/
#define DUK_NORETURN(decl) decl
#endif
/*
* Macro for stating that a certain line cannot be reached.
*
* http://gcc.gnu.org/onlinedocs/gcc-4.5.0/gcc/Other-Builtins.html#Other-Builtins
* http://clang.llvm.org/docs/LanguageExtensions.html
*/
#if defined(DUK_F_GCC_VERSION) && (DUK_F_GCC_VERSION >= 40500L)
/* since gcc-4.5 */
#define DUK_UNREACHABLE() do { __builtin_unreachable(); } while(0)
#elif defined(__clang__) && defined(__has_builtin)
#if __has_builtin(__builtin_unreachable)
/* same as gcc */
#define DUK_UNREACHABLE() do { __builtin_unreachable(); } while(0)
#endif
#else
/* unknown */
#endif
#if !defined(DUK_UNREACHABLE)
/* Don't know how to declare unreachable point, so don't do it; this
* may cause some spurious compilation warnings (e.g. "variable used
* uninitialized").
*/
#define DUK_UNREACHABLE() /* unreachable */
#endif
/*
* Likely and unlikely branches. Using these is not at all a clear cut case,
* so the selection is a two-step process: (1) DUK_USE_BRANCH_HINTS is set
* if the architecture, compiler etc make it useful to use the hints, and (2)
* a separate check determines how to do them.
*
* These macros expect the argument to be a relational expression with an
* integer value. If used with pointers, you should use an explicit check
* like:
*
* if (DUK_LIKELY(ptr != NULL)) { ... }
*
* instead of:
*
* if (DUK_LIKELY(ptr)) { ... }
*
* http://gcc.gnu.org/onlinedocs/gcc/Other-Builtins.html (__builtin_expect)
*/
/* pretty much a placeholder now */
#if defined(DUK_F_GCC)
#define DUK_USE_BRANCH_HINTS
#elif defined(DUK_F_CLANG)
#define DUK_USE_BRANCH_HINTS
#else
#undef DUK_USE_BRANCH_HINTS
#endif
#if defined(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)
#elif defined(DUK_F_CLANG)
#define DUK_LIKELY(x) __builtin_expect((x), 1)
#define DUK_UNLIKELY(x) __builtin_expect((x), 0)
#endif
#endif /* DUK_USE_BRANCH_HINTS */
#if !defined(DUK_LIKELY)
#define DUK_LIKELY(x) (x)
#endif
#if !defined(DUK_UNLIKELY)
#define DUK_UNLIKELY(x) (x)
#endif
/*
* Function inlining control
*
* DUK_NOINLINE: avoid inlining a function.
* DUK_INLINE: suggest inlining a function.
* DUK_ALWAYS_INLINE: force inlining for critical functions.
*
* Apply to function definition only (not declaration).
*/
#if defined(DUK_F_CLANG) && (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))
#elif defined(DUK_F_GCC) && defined(DUK_F_GCC_VERSION) && (defined(DUK_F_C99) || defined(DUK_F_CPP11))
#if (DUK_F_GCC_VERSION >= 30101)
#define DUK_NOINLINE __attribute__((noinline))
#define DUK_INLINE inline
#define DUK_ALWAYS_INLINE inline __attribute__((always_inline))
#endif
#endif
#if !defined(DUK_NOINLINE)
#define DUK_NOINLINE /*nop*/
#define DUK_INLINE /*nop*/
#define DUK_ALWAYS_INLINE /*nop*/
#endif
/*
* Symbol visibility macros
*
* To avoid C++ declaration issues (see GH-63):
*
* - Don't use DUK_LOCAL_DECL for local -data symbols- so that you don't
* end up with both a "static" declaration and a definition.
*
* - Wrap any DUK_INTERNAL_DECL with a '#if !defined(DUK_SINGLE_FILE)'
* so that the internal declarations (which would map to "static" in
* a single file distribution) get dropped.
*/
/* XXX: user override for these? user override for just using the default visibility macros? */
/* XXX: separate macros for function and data may be necessary at some point. */
#if defined(DUK_F_GCC_VERSION)
#if (DUK_F_GCC_VERSION >= 40000) && !(defined(DUK_F_MINGW) || defined(DUK_F_CYGWIN))
/* Might work on earlier versions too but limit to GCC 4+.
* MinGW should use Windows specific __declspec or no visibility attributes at all,
* otherwise: "warning: visibility attribute not supported in this configuration; ignored".
* Same applies to Cygwin GCC.
*/
#define DUK_F_GCC_SYMBOL_VISIBILITY
#endif
#endif
#if defined(DUK_F_CLANG) && !defined(DUK_F_GCC_SYMBOL_VISIBILITY)
#define DUK_F_GCC_SYMBOL_VISIBILITY
#endif
#if defined(DUK_OPT_DLL_BUILD) && defined(_WIN32) && (defined(_MSC_VER) || defined(__GNUC__))
/* __declspec(dllexport) and __declspec(dllimport) only for Windows DLL build.
* MSVC: any minimum version?
* MinGW: no minimum version, even gcc-2.95.3 supported dllimport/dllexport.
*/
#define DUK_F_MSVC_DLL_SYMBOL_VISIBILITY
#endif
#if defined(DUK_F_GCC_SYMBOL_VISIBILITY)
/* GCC 4+ visibility attributes. */
#define DUK_EXTERNAL_DECL __attribute__ ((visibility("default"))) extern
#define DUK_EXTERNAL __attribute__ ((visibility("default")))
#if defined(DUK_SINGLE_FILE)
#define DUK_INTERNAL_DECL static
#define DUK_INTERNAL static
#else
#define DUK_INTERNAL_DECL __attribute__ ((visibility("hidden"))) extern
#define DUK_INTERNAL __attribute__ ((visibility("hidden")))
#endif
#elif defined(DUK_F_MSVC_DLL_SYMBOL_VISIBILITY)
/* 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
#else
/* Default visibility. */
#define DUK_EXTERNAL_DECL extern
#define DUK_EXTERNAL /*empty*/
#if defined(DUK_SINGLE_FILE)
#define DUK_INTERNAL_DECL static
#define DUK_INTERNAL static
#else /* DUK_SINGLE_FILE */
#define DUK_INTERNAL_DECL extern
#define DUK_INTERNAL /*empty*/
#endif
#endif
/* For now, these are shared. */
#define DUK_LOCAL_DECL static
#define DUK_LOCAL static
/*
* __FILE__, __LINE__, __func__ are wrapped. Especially __func__ is a
* problem because it is not available even in some compilers which try
* to be C99 compatible (e.g. VBCC with -c99 option).
*/
#define DUK_FILE_MACRO __FILE__
#define DUK_LINE_MACRO __LINE__
#if !defined(DUK_F_VBCC) && !defined(DUK_F_MSVC)
#define DUK_FUNC_MACRO __func__
#else
#define DUK_FUNC_MACRO "unknown"
#endif
/*
* Byteswap macros
*
* These are here so that inline assembly or other platform functions can be
* used if available.
*/
#define DUK_BSWAP32(x) \
((((duk_uint32_t) (x)) >> 24) | \
((((duk_uint32_t) (x)) >> 8) & 0xff00UL) | \
((((duk_uint32_t) (x)) << 8) & 0xff0000UL) | \
(((duk_uint32_t) (x)) << 24))
#define DUK_BSWAP16(x) \
((duk_uint16_t) (x) >> 8) | \
((duk_uint16_t) (x) << 8)
/*
* Architecture string, human readable value exposed in Duktape.env
*/
#if defined(DUK_F_X86)
#define DUK_USE_ARCH_STRING "x86"
#elif defined(DUK_F_X32)
#define DUK_USE_ARCH_STRING "x32"
#elif defined(DUK_F_X64)
#define DUK_USE_ARCH_STRING "x64"
#elif defined(DUK_F_ARM)
#define DUK_USE_ARCH_STRING "arm"
#elif defined(DUK_F_MIPS32)
#define DUK_USE_ARCH_STRING "mips32"
#elif defined(DUK_F_MIPS64)
#define DUK_USE_ARCH_STRING "mips64"
#elif defined(DUK_F_SUPERH)
#define DUK_USE_ARCH_STRING "sh"
#elif defined(DUK_F_PPC)
#define DUK_USE_ARCH_STRING "ppc"
#elif defined(DUK_F_M68K)
#define DUK_USE_ARCH_STRING "m68k"
#elif defined(DUK_F_FLASHPLAYER)
#define DUK_USE_ARCH_STRING "flashplayer"
#elif defined(DUK_F_EMSCRIPTEN)
#define DUK_USE_ARCH_STRING "emscripten"
#else
#define DUK_USE_ARCH_STRING "unknown"
#endif
/*
* OS string, human readable value exposed in Duktape.env
*/
#if defined(DUK_F_LINUX)
#define DUK_USE_OS_STRING "linux"
#elif defined(__APPLE__)
/* 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 "ios"
#else
#define DUK_USE_OS_STRING "ios-unknown"
#endif
#elif defined(DUK_F_FREEBSD)
#define DUK_USE_OS_STRING "freebsd"
#elif defined(DUK_F_OPENBSD)
#define DUK_USE_OS_STRING "openbsd"
#elif defined(DUK_F_NETBSD)
#define DUK_USE_OS_STRING "netbsd"
#elif defined(DUK_F_BSD)
#define DUK_USE_OS_STRING "bsd"
#elif defined(DUK_F_UNIX)
#define DUK_USE_OS_STRING "unix"
#elif defined(DUK_F_WINDOWS)
#define DUK_USE_OS_STRING "windows"
#elif defined(DUK_F_TOS)
#define DUK_USE_OS_STRING "tos"
#elif defined(DUK_F_AMIGAOS)
#define DUK_USE_OS_STRING "amigaos"
#elif defined(DUK_F_QNX)
#define DUK_USE_OS_STRING "qnx"
#elif defined(DUK_F_TINSPIRE)
#define DUK_USE_OS_STRING "tinspire"
#else
#define DUK_USE_OS_STRING "unknown"
#endif
/*
* Compiler string, human readable value exposed in Duktape.env
*/
#if defined(DUK_F_MINGW)
#define DUK_USE_COMPILER_STRING "mingw"
#elif defined(DUK_F_GCC)
#if defined(DUK_F_CPP)
#define DUK_USE_COMPILER_STRING "g++"
#else
#define DUK_USE_COMPILER_STRING "gcc"
#endif
#elif defined(DUK_F_CLANG)
#define DUK_USE_COMPILER_STRING "clang"
#elif defined(DUK_F_MSVC)
#define DUK_USE_COMPILER_STRING "msvc"
#elif defined(DUK_F_VBCC)
#define DUK_USE_COMPILER_STRING "vbcc"
#else
#define DUK_USE_COMPILER_STRING "unknown"
#endif
/*
* Long control transfer, setjmp/longjmp or alternatives
*
* Signal mask is not saved (when that can be communicated to the platform)
*/
/* dummy non-zero value to be used as an argument for longjmp(), see man longjmp */
#define DUK_LONGJMP_DUMMY_VALUE 1
#if defined(DUK_OPT_SETJMP)
#define DUK_USE_SETJMP
#elif defined(DUK_OPT_UNDERSCORE_SETJMP)
#define DUK_USE_UNDERSCORE_SETJMP
#elif defined(DUK_OPT_SIGSETJMP)
#define DUK_USE_SIGSETJMP
#elif defined(__APPLE__)
/* Use _setjmp() on Apple by default, see GH-55. */
#define DUK_USE_UNDERSCORE_SETJMP
#else
/* The most portable default is setjmp(). */
#define DUK_USE_SETJMP
#endif
#if defined(DUK_USE_UNDERSCORE_SETJMP)
#define DUK_SETJMP(jb) _setjmp((jb))
#define DUK_LONGJMP(jb) _longjmp((jb), DUK_LONGJMP_DUMMY_VALUE)
#elif defined(DUK_USE_SIGSETJMP)
#define DUK_SETJMP(jb) sigsetjmp((jb), 0 /*savesigs*/)
#define DUK_LONGJMP(jb) siglongjmp((jb), DUK_LONGJMP_DUMMY_VALUE)
#elif defined(DUK_USE_SETJMP)
#define DUK_SETJMP(jb) setjmp((jb))
#define DUK_LONGJMP(jb) longjmp((jb), DUK_LONGJMP_DUMMY_VALUE)
#else
#error internal error
#endif
/*
* Target info string
*/
#if defined(DUK_OPT_TARGET_INFO)
#define DUK_USE_TARGET_INFO DUK_OPT_TARGET_INFO
#else
#define DUK_USE_TARGET_INFO "unknown"
#endif
/*
* Speed/size and other performance options
*/
/* Use fast ("inline") refcount operations instead of calling out to helpers
* by default. The difference in binary size is small (~1kB on x64).
*/
#define DUK_USE_FAST_REFCOUNT_DEFAULT
/* Assert for valstack space but don't check for it in non-assert build.
* Valstack overruns (writing beyond checked space) is memory unsafe and
* potentially a segfault. Produces a smaller and faster binary.
* (In practice the speed difference is small with -O3 so default to
* safer behavior for now.)
*/
#undef DUK_USE_VALSTACK_UNSAFE
/* Catch-all flag which can be used to choose between variant algorithms
* where a speed-size tradeoff exists (e.g. lookup tables). When it really
* matters, specific use flags may be appropriate.
*/
#define DUK_USE_PREFER_SIZE
/* Use a sliding window for lexer; slightly larger footprint, slightly faster. */
#define DUK_USE_LEXER_SLIDING_WINDOW
/*
* Tagged type representation (duk_tval)
*/
#undef DUK_USE_PACKED_TVAL
#undef DUK_USE_FULL_TVAL
#if defined(DUK_USE_PACKED_TVAL_POSSIBLE) && !defined(DUK_OPT_NO_PACKED_TVAL)
#define DUK_USE_PACKED_TVAL
#endif
/* Support for 48-bit signed integer duk_tval with transparent semantics. */
#undef DUK_USE_FASTINT
#if defined(DUK_OPT_FASTINT)
#if !defined(DUK_F_HAVE_64BIT)
#error DUK_OPT_FASTINT requires 64-bit integer type support at the moment
#endif
#define DUK_USE_FASTINT
#endif
/*
* Memory management options
*/
#define DUK_USE_REFERENCE_COUNTING
#define DUK_USE_DOUBLE_LINKED_HEAP
#define DUK_USE_MARK_AND_SWEEP
#define DUK_USE_MS_STRINGTABLE_RESIZE
#if defined(DUK_OPT_NO_REFERENCE_COUNTING)
#undef DUK_USE_REFERENCE_COUNTING
#undef DUK_USE_DOUBLE_LINKED_HEAP
/* XXX: undef DUK_USE_MS_STRINGTABLE_RESIZE as it is more expensive
* with more frequent mark-and-sweeps?
*/
#endif
#if defined(DUK_OPT_NO_MARK_AND_SWEEP)
#undef DUK_USE_MARK_AND_SWEEP
#endif
#if defined(DUK_USE_MARK_AND_SWEEP)
#define DUK_USE_VOLUNTARY_GC
#if defined(DUK_OPT_NO_VOLUNTARY_GC)
#undef DUK_USE_VOLUNTARY_GC
#endif
#endif
#if !defined(DUK_USE_MARK_AND_SWEEP) && !defined(DUK_USE_REFERENCE_COUNTING)
#error must have either mark-and-sweep or reference counting enabled
#endif
#if defined(DUK_OPT_NO_MS_STRINGTABLE_RESIZE)
#undef DUK_USE_MS_STRINGTABLE_RESIZE
#endif
#undef DUK_USE_GC_TORTURE
#if defined(DUK_OPT_GC_TORTURE)
#define DUK_USE_GC_TORTURE
#endif
/*
* String table options
*/
#if defined(DUK_OPT_STRTAB_CHAIN) && defined(DUK_OPT_STRTAB_CHAIN_SIZE)
/* Low memory algorithm: separate chaining using arrays, fixed size hash */
#define DUK_USE_STRTAB_CHAIN
#define DUK_USE_STRTAB_CHAIN_SIZE DUK_OPT_STRTAB_CHAIN_SIZE
#else
/* Default algorithm: open addressing (probing) */
#define DUK_USE_STRTAB_PROBE
#endif
/*
* Error handling options
*/
#define DUK_USE_AUGMENT_ERROR_CREATE
#define DUK_USE_AUGMENT_ERROR_THROW
#define DUK_USE_TRACEBACKS
#define DUK_USE_ERRCREATE
#define DUK_USE_ERRTHROW
#define DUK_USE_VERBOSE_ERRORS
#if defined(DUK_OPT_NO_AUGMENT_ERRORS)
#undef DUK_USE_AUGMENT_ERROR_CREATE
#undef DUK_USE_AUGMENT_ERROR_THROW
#undef DUK_USE_TRACEBACKS
#undef DUK_USE_ERRCREATE
#undef DUK_USE_ERRTHROW
#elif defined(DUK_OPT_NO_TRACEBACKS)
#undef DUK_USE_TRACEBACKS
#endif
#if defined(DUK_OPT_NO_VERBOSE_ERRORS)
#undef DUK_USE_VERBOSE_ERRORS
#endif
#if defined(DUK_USE_TRACEBACKS)
#if defined(DUK_OPT_TRACEBACK_DEPTH)
#define DUK_USE_TRACEBACK_DEPTH DUK_OPT_TRACEBACK_DEPTH
#else
#define DUK_USE_TRACEBACK_DEPTH 10
#endif
#endif
/* Include messages in executor internal errors. */
#define DUK_USE_VERBOSE_EXECUTOR_ERRORS
/*
* Execution and debugger options
*/
#undef DUK_USE_INTERRUPT_COUNTER
#if defined(DUK_OPT_INTERRUPT_COUNTER)
#define DUK_USE_INTERRUPT_COUNTER
#endif
#undef DUK_USE_EXEC_TIMEOUT_CHECK
#if defined(DUK_OPT_EXEC_TIMEOUT_CHECK)
#define DUK_USE_EXEC_TIMEOUT_CHECK(udata) DUK_OPT_EXEC_TIMEOUT_CHECK((udata))
#endif
#undef DUK_USE_DEBUGGER_SUPPORT
#if defined(DUK_OPT_DEBUGGER_SUPPORT)
#define DUK_USE_DEBUGGER_SUPPORT
#endif
#undef DUK_USE_DEBUGGER_FWD_PRINTALERT
#if defined(DUK_OPT_DEBUGGER_SUPPORT) && defined(DUK_OPT_DEBUGGER_FWD_PRINTALERT)
#define DUK_USE_DEBUGGER_FWD_PRINTALERT
#endif
#undef DUK_USE_DEBUGGER_FWD_LOGGING
#if defined(DUK_OPT_DEBUGGER_SUPPORT) && defined(DUK_OPT_DEBUGGER_FWD_LOGGING)
#define DUK_USE_DEBUGGER_FWD_LOGGING
#endif
/* DumpHeap is optional because it's not always needed and has a relatively
* large footprint.
*/
#undef DUK_USE_DEBUGGER_DUMPHEAP
#if defined(DUK_OPT_DEBUGGER_DUMPHEAP)
#define DUK_USE_DEBUGGER_DUMPHEAP
#endif
/* Debugger transport read/write torture. */
#undef DUK_USE_DEBUGGER_TRANSPORT_TORTURE
#if defined(DUK_OPT_DEBUGGER_TRANSPORT_TORTURE)
#define DUK_USE_DEBUGGER_TRANSPORT_TORTURE
#endif
/* For opcodes with indirect indices, check final index against stack size.
* This should not be necessary because the compiler is trusted, and we don't
* bound check non-indirect indices either.
*/
#undef DUK_USE_EXEC_INDIRECT_BOUND_CHECK
#if defined(DUK_OPT_DEBUG) || defined(DUK_OPT_ASSERTIONS)
/* Enabled with debug/assertions just so that any issues can be caught. */
#define DUK_USE_EXEC_INDIRECT_BOUND_CHECK
#endif
/*
* Debug printing and assertion options
*/
#undef DUK_USE_DEBUG
#undef DUK_USE_DPRINT
#undef DUK_USE_DDPRINT
#undef DUK_USE_DDDPRINT
#undef DUK_USE_DPRINT_RDTSC
#undef DUK_USE_ASSERTIONS
/* Global debug enable. Compile must be clean on C99 regardless of whether or
* not debugging is enabled. On non-C99 platforms compile should be clean with
* debugging disabled but may produce warnings with debugging enabled (related
* to debug macro hackery and such).
*/
#if defined(DUK_OPT_DEBUG)
#define DUK_USE_DEBUG
#endif
#if defined(DUK_OPT_DEBUG) && defined(DUK_OPT_DPRINT)
#define DUK_USE_DPRINT
#endif
#if defined(DUK_OPT_DEBUG) && defined(DUK_OPT_DDPRINT)
#define DUK_USE_DDPRINT
#endif
#if defined(DUK_OPT_DEBUG) && defined(DUK_OPT_DDDPRINT)
#define DUK_USE_DDDPRINT
#endif
#undef DUK_USE_DPRINT_COLORS
#if defined(DUK_OPT_DPRINT_COLORS)
#define DUK_USE_DPRINT_COLORS
#endif
#if defined(DUK_USE_RDTSC) && defined(DUK_OPT_DPRINT_RDTSC)
#define DUK_USE_DPRINT_RDTSC
#else
#undef DUK_USE_DPRINT_RDTSC
#endif
#if defined(DUK_OPT_ASSERTIONS)
#define DUK_USE_ASSERTIONS
#endif
/* The static buffer for debug printing is quite large by default, so there
* is an option to shrink it manually for constrained builds.
*/
#if defined(DUK_OPT_DEBUG_BUFSIZE)
#define DUK_USE_DEBUG_BUFSIZE DUK_OPT_DEBUG_BUFSIZE
#else
#define DUK_USE_DEBUG_BUFSIZE 65536L
#endif
/*
* Ecmascript features / compliance options
*/
#if defined(DUK_F_BCC)
/* Math built-in is stubbed out on BCC to allow compiler torture testing. */
#else
#define DUK_USE_MATH_BUILTIN
#endif
#define DUK_USE_STRICT_DECL
#if defined(DUK_OPT_NO_STRICT_DECL)
#undef DUK_USE_STRICT_DECL
#endif
#define DUK_USE_REGEXP_SUPPORT
#if defined(DUK_OPT_NO_REGEXP_SUPPORT)
#undef DUK_USE_REGEXP_SUPPORT
#endif
#undef DUK_USE_STRICT_UTF8_SOURCE
#if defined(DUK_OPT_STRICT_UTF8_SOURCE)
#define DUK_USE_STRICT_UTF8_SOURCE
#endif
#define DUK_USE_OCTAL_SUPPORT
#if defined(DUK_OPT_NO_OCTAL_SUPPORT)
#undef DUK_USE_OCTAL_SUPPORT
#endif
#define DUK_USE_SOURCE_NONBMP
#if defined(DUK_OPT_NO_SOURCE_NONBMP)
#undef DUK_USE_SOURCE_NONBMP
#endif
#define DUK_USE_BROWSER_LIKE
#if defined(DUK_OPT_NO_BROWSER_LIKE)
#undef DUK_USE_BROWSER_LIKE
#endif
/* E5/E5.1 Section B features. */
#define DUK_USE_SECTION_B
#if defined(DUK_OPT_NO_SECTION_B)
#undef DUK_USE_SECTION_B
#endif
/* Non-standard regexp parsing features. */
#define DUK_USE_NONSTD_REGEXP_DOLLAR_ESCAPE
/* Treat function statements (function declarations outside top level of
* Program or FunctionBody) same as normal function declarations. This is
* also V8 behavior. See test-dev-func-decl-outside-top.js.
*/
#define DUK_USE_NONSTD_FUNC_STMT
#if defined(DUK_OPT_NO_NONSTD_FUNC_STMT)
#undef DUK_USE_NONSTD_FUNC_STMT
#endif
/* Array.prototype.splice() non-standard but real world compatible behavior
* when deleteCount is omitted.
*/
#define DUK_USE_NONSTD_ARRAY_SPLICE_DELCOUNT
#if defined(DUK_OPT_NO_NONSTD_ARRAY_SPLICE_DELCOUNT)
#undef DUK_USE_NONSTD_ARRAY_SPLICE_DELCOUNT
#endif
/* Array.prototype.concat() non-standard but real world compatible behavior
* for non-existent trailing elements.
*/
#define DUK_USE_NONSTD_ARRAY_CONCAT_TRAILER
#if defined(DUK_OPT_NO_NONSTD_ARRAY_CONCAT_TRAILER)
#undef DUK_USE_NONSTD_ARRAY_CONCAT_TRAILER
#endif
/* Array.prototype.map() non-standard but real world compatible behavior
* for non-existent trailing elements.
*/
#define DUK_USE_NONSTD_ARRAY_MAP_TRAILER
#if defined(DUK_OPT_NO_NONSTD_ARRAY_MAP_TRAILER)
#undef DUK_USE_NONSTD_ARRAY_MAP_TRAILER
#endif
/* Non-standard 'caller' property for function instances, see
* test-bi-function-nonstd-caller-prop.js.
*/
#undef DUK_USE_NONSTD_FUNC_CALLER_PROPERTY
#if defined(DUK_OPT_NONSTD_FUNC_CALLER_PROPERTY)
#define DUK_USE_NONSTD_FUNC_CALLER_PROPERTY
#endif
/* Non-standard Object.prototype.__proto__ (ES6), see
* test-bi-object-proto-__proto__.js.
*/
#define DUK_USE_ES6_OBJECT_PROTO_PROPERTY
#if defined(DUK_OPT_NO_ES6_OBJECT_PROTO_PROPERTY)
#undef DUK_USE_ES6_OBJECT_PROTO_PROPERTY
#endif
/* Non-standard Object.setPrototypeOf (ES6), see
* test-bi-object-setprototypeof.js.
*/
#define DUK_USE_ES6_OBJECT_SETPROTOTYPEOF
#if defined(DUK_OPT_NO_ES6_OBJECT_SETPROTOTYPEOF)
#undef DUK_USE_ES6_OBJECT_SETPROTOTYPEOF
#endif
/* ES6 Proxy object (subset for now). */
#define DUK_USE_ES6_PROXY
#if defined(DUK_OPT_NO_ES6_PROXY)
#undef DUK_USE_ES6_PROXY
#endif
/* Record pc-to-line information. */
#define DUK_USE_PC2LINE
#if defined(DUK_OPT_NO_PC2LINE)
#undef DUK_USE_PC2LINE
#endif
/* Non-standard function 'source' property. */
#undef DUK_USE_NONSTD_FUNC_SOURCE_PROPERTY
#if defined(DUK_OPT_NONSTD_FUNC_SOURCE_PROPERTY)
#define DUK_USE_NONSTD_FUNC_SOURCE_PROPERTY
#endif
/* CommonJS modules */
#define DUK_USE_COMMONJS_MODULES
#if defined(DUK_OPT_NO_COMMONJS_MODULES)
#undef DUK_USE_COMMONJS_MODULES
#endif
/* Additional key argument to setter/getter calls when triggered by property
* accesses.
*/
#define DUK_USE_NONSTD_GETTER_KEY_ARGUMENT
#define DUK_USE_NONSTD_SETTER_KEY_ARGUMENT
#if defined(DUK_OPT_NO_NONSTD_ACCESSOR_KEY_ARGUMENT)
#undef DUK_USE_NONSTD_GETTER_KEY_ARGUMENT
#undef DUK_USE_NONSTD_SETTER_KEY_ARGUMENT
#endif
/* JSON escaping of U+2028 and U+2029.
*/
#define DUK_USE_NONSTD_JSON_ESC_U2028_U2029
#if defined(DUK_OPT_NO_NONSTD_JSON_ESC_U2028_U2029)
#undef DUK_USE_NONSTD_JSON_ESC_U2028_U2029
#endif
/* Allow 32-bit codepoints in String.fromCharCode. */
#define DUK_USE_NONSTD_STRING_FROMCHARCODE_32BIT
#if defined(DUK_OPT_NO_NONSTD_STRING_FROMCHARCODE_32BIT)
#undef DUK_USE_NONSTD_STRING_FROMCHARCODE_32BIT
#endif
/* Non-standard array fast path write behavior: when writing to numeric
* indexes of an Array instance, assume Array.prototype doesn't have
* conflicting properties (e.g. a non-writable property "7").
*/
#define DUK_USE_NONSTD_ARRAY_WRITE
#if defined(DUK_OPT_NO_NONSTD_ARRAY_WRITE)
#undef DUK_USE_NONSTD_ARRAY_WRITE
#endif
/*
* Optional C API options
*/
#define DUK_USE_BYTECODE_DUMP_SUPPORT
#if defined(DUK_OPT_NO_BYTECODE_DUMP_SUPPORT)
#undef DUK_USE_BYTECODE_DUMP_SUPPORT
#endif
/*
* Tailcalls
*/
/* Tailcalls are enabled by default. The non-standard function 'caller'
* property feature conflicts with tailcalls quite severely so tailcalls
* are disabled if the 'caller' property is enabled.
*/
#define DUK_USE_TAILCALL
#if defined(DUK_USE_NONSTD_FUNC_CALLER_PROPERTY)
#undef DUK_USE_TAILCALL
#endif
/*
* Deep vs. shallow stack.
*
* Some embedded platforms have very shallow stack (e.g. 64kB); default to
* a shallow stack on unknown platforms or known embedded platforms.
*/
#if defined(DUK_F_LINUX) || defined(DUK_F_BSD) || defined(DUK_F_WINDOWS) || \
defined(DUK_F_APPLE) || defined(DUK_OPT_DEEP_C_STACK)
#define DUK_USE_DEEP_C_STACK
#else
#undef DUK_USE_DEEP_C_STACK
#endif
/*
* Ecmascript compiler
*/
/* Ensure final bytecode never exceeds a certain byte size and never uses
* line numbers above a certain limit. This ensures that there is no need
* to deal with unbounded ranges in e.g. pc2line data structures. For now,
* limits are set so that signed 32-bit values can represent line number
* and byte offset with room to spare.
*/
#define DUK_USE_ESBC_LIMITS
#define DUK_USE_ESBC_MAX_LINENUMBER 0x7fff0000L
#define DUK_USE_ESBC_MAX_BYTES 0x7fff0000L
#undef DUK_USE_SHUFFLE_TORTURE
#if defined(DUK_OPT_SHUFFLE_TORTURE)
#define DUK_USE_SHUFFLE_TORTURE
#endif
/*
* User panic handler, panic exit behavior for default panic handler
*/
#undef DUK_USE_PANIC_HANDLER
#if defined(DUK_OPT_PANIC_HANDLER)
#define DUK_USE_PANIC_HANDLER(code,msg) DUK_OPT_PANIC_HANDLER((code),(msg))
#endif
#undef DUK_USE_PANIC_ABORT
#undef DUK_USE_PANIC_EXIT
#undef DUK_USE_PANIC_SEGFAULT
#if defined(DUK_OPT_SEGFAULT_ON_PANIC)
#define DUK_USE_PANIC_SEGFAULT
#else
#define DUK_USE_PANIC_ABORT
#endif
/*
* File I/O support. This is now used in a few API calls to e.g. push
* a string from file contents or eval a file. For portability it must
* be possible to disable I/O altogether.
*/
#undef DUK_USE_FILE_IO
#if !defined(DUK_OPT_NO_FILE_IO)
#define DUK_USE_FILE_IO
#endif
/*
* Optional run-time self tests executed when a heap is created. Some
* platform/compiler issues cannot be determined at compile time. One
* particular example is the bug described in misc/clang_aliasing.c.
*/
#undef DUK_USE_SELF_TESTS
#if defined(DUK_OPT_SELF_TESTS)
#define DUK_USE_SELF_TESTS
#endif
/* Double aliasing testcase fails when Emscripten-generated code is run
* on Firefox. This is not fatal because it only affects packed duk_tval
* which we avoid with Emscripten.
*/
#undef DUK_USE_NO_DOUBLE_ALIASING_SELFTEST
#if defined(DUK_F_EMSCRIPTEN)
#define DUK_USE_NO_DOUBLE_ALIASING_SELFTEST
#endif
/*
* Codecs
*/
#define DUK_USE_JX
#if defined(DUK_OPT_NO_JX)
#undef DUK_USE_JX
#endif
#define DUK_USE_JC
#if defined(DUK_OPT_NO_JC)
#undef DUK_USE_JC
#endif
/*
* InitJS code
*/
/* Always use the built-in InitJS code for now. */
#define DUK_USE_BUILTIN_INITJS
/* User provided InitJS. */
#undef DUK_USE_USER_INITJS
#if defined(DUK_OPT_USER_INITJS)
#define DUK_USE_USER_INITJS (DUK_OPT_USER_INITJS)
#endif
/*
* External string data support
*
* Allow duk_hstrings to store data also behind an external pointer (see
* duk_hstring_external). This increases code size slightly but is useful
* in low memory environments where memory is more limited than flash.
*/
#undef DUK_USE_HSTRING_EXTDATA
#if defined(DUK_OPT_EXTERNAL_STRINGS)
#define DUK_USE_HSTRING_EXTDATA
#endif
#undef DUK_USE_EXTSTR_INTERN_CHECK
#if defined(DUK_OPT_EXTERNAL_STRINGS) && defined(DUK_OPT_EXTSTR_INTERN_CHECK)
#define DUK_USE_EXTSTR_INTERN_CHECK(udata,ptr,len) DUK_OPT_EXTSTR_INTERN_CHECK((udata), (ptr), (len))
#endif
#undef DUK_USE_EXTSTR_FREE
#if defined(DUK_OPT_EXTERNAL_STRINGS) && defined(DUK_OPT_EXTSTR_FREE)
#define DUK_USE_EXTSTR_FREE(udata,ptr) DUK_OPT_EXTSTR_FREE((udata), (ptr))
#endif
/*
* Lightweight functions
*/
/* Force built-ins to use lightfunc function pointers when possible. This
* makes the built-in functions non-compliant with respect to their property
* values and such, but is very useful in low memory environments (can save
* around 14kB of initial RAM footprint).
*/
#undef DUK_USE_LIGHTFUNC_BUILTINS
#if defined(DUK_OPT_LIGHTFUNC_BUILTINS)
#define DUK_USE_LIGHTFUNC_BUILTINS
#endif
/*
* Pointer compression and 16-bit header fields for low memory environments
*/
#undef DUK_USE_HEAPPTR16
#undef DUK_USE_HEAPPTR_ENC16
#undef DUK_USE_HEAPPTR_DEC16
#if defined(DUK_OPT_HEAPPTR16) && defined(DUK_OPT_HEAPPTR_ENC16) && defined(DUK_OPT_HEAPPTR_DEC16)
#define DUK_USE_HEAPPTR16
#define DUK_USE_HEAPPTR_ENC16(udata,ptr) DUK_OPT_HEAPPTR_ENC16((udata),(ptr))
#define DUK_USE_HEAPPTR_DEC16(udata,ptr) DUK_OPT_HEAPPTR_DEC16((udata),(ptr))
#endif
#undef DUK_USE_DATAPTR16
#undef DUK_USE_DATAPTR_ENC16
#undef DUK_USE_DATAPTR_DEC16
#if defined(DUK_OPT_DATAPTR16) && defined(DUK_OPT_DATAPTR_ENC16) && defined(DUK_OPT_DATAPTR_DEC16)
#define DUK_USE_DATAPTR16
#define DUK_USE_DATAPTR_ENC16(udata,ptr) DUK_OPT_DATAPTR_ENC16((udata),(ptr))
#define DUK_USE_DATAPTR_DEC16(udata,ptr) DUK_OPT_DATAPTR_DEC16((udata),(ptr))
#endif
#undef DUK_USE_FUNCPTR16
#undef DUK_USE_FUNCPTR_ENC16
#undef DUK_USE_FUNCPTR_DEC16
#if defined(DUK_OPT_FUNCPTR16) && defined(DUK_OPT_FUNCPTR_ENC16) && defined(DUK_OPT_FUNCPTR_DEC16)
#define DUK_USE_FUNCPTR16
#define DUK_USE_FUNCPTR_ENC16(udata,ptr) DUK_OPT_FUNCPTR_ENC16((udata),(ptr))
#define DUK_USE_FUNCPTR_DEC16(udata,ptr) DUK_OPT_FUNCPTR_DEC16((udata),(ptr))
#endif
#undef DUK_USE_REFCOUNT16
#if defined(DUK_OPT_REFCOUNT16)
#define DUK_USE_REFCOUNT16
#endif
#undef DUK_USE_STRHASH16
#if defined(DUK_OPT_STRHASH16)
#define DUK_USE_STRHASH16
#endif
#undef DUK_USE_STRLEN16
#if defined(DUK_OPT_STRLEN16)
#define DUK_USE_STRLEN16
#endif
#undef DUK_USE_BUFLEN16
#if defined(DUK_OPT_BUFLEN16)
#define DUK_USE_BUFLEN16
#endif
#undef DUK_USE_OBJSIZES16
#if defined(DUK_OPT_OBJSIZES16)
#define DUK_USE_OBJSIZES16
#endif
/* For now, hash part is dropped if and only if 16-bit object fields are used. */
#define DUK_USE_HOBJECT_HASH_PART
#if defined(DUK_USE_OBJSIZES16)
#undef DUK_USE_HOBJECT_HASH_PART
#endif
/*
* Miscellaneous
*/
/* Convenience define: 32-bit pointers. 32-bit platforms are an important
* footprint optimization target, and this define allows e.g. struct sizes
* to be organized for compactness.
*/
#undef DUK_USE_32BIT_PTRS
#if defined(DUK_UINTPTR_MAX) && !defined(DUK_UINTPTR_MAX_COMPUTED)
#if DUK_UINTPTR_MAX <= 0xffffffffUL
#define DUK_USE_32BIT_PTRS
#endif
#endif
#define DUK_USE_PROVIDE_DEFAULT_ALLOC_FUNCTIONS
#undef DUK_USE_EXPLICIT_NULL_INIT
#if !defined(DUK_USE_PACKED_TVAL)
#define DUK_USE_EXPLICIT_NULL_INIT
#endif
#define DUK_USE_ZERO_BUFFER_DATA
#if defined(DUK_OPT_NO_ZERO_BUFFER_DATA)
#undef DUK_USE_ZERO_BUFFER_DATA
#endif
#undef DUK_USE_VARIADIC_MACROS
#if defined(DUK_F_C99) || (defined(DUK_F_CPP11) && defined(__GNUC__))
#define DUK_USE_VARIADIC_MACROS
#endif
#if defined(_MSC_VER) && !defined(DUK_USE_VARIADIC_MACROS)
#if (_MSC_VER >= 1400)
/* VS2005+ should have variadic macros even when they're not C99. */
#define DUK_USE_VARIADIC_MACROS
#endif
#endif
/*
* Variable size array initialization.
*
* Variable size array at the end of a structure is nonportable.
* There are three alternatives:
*
* 1) C99 (flexible array member): char buf[]
* 2) Compiler specific (e.g. GCC): char buf[0]
* 3) Portable but wastes memory / complicates allocation: char buf[1]
*/
/* XXX: Currently unused, only hbuffer.h needed this at some point. */
#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
#elif defined(__GNUC__)
#define DUK_USE_FLEX_ZEROSIZE
#else
#define DUK_USE_FLEX_ONESIZE
#endif
/*
* GCC pragmas
*/
/* XXX: GCC pragma inside a function fails in some earlier GCC versions (e.g. gcc 4.5).
* This is very approximate but allows clean builds for development right now.
*/
/* http://gcc.gnu.org/onlinedocs/cpp/Common-Predefined-Macros.html */
#if defined(__GNUC__) && defined(__GNUC_MINOR__) && (__GNUC__ == 4) && (__GNUC_MINOR__ >= 6)
#define DUK_USE_GCC_PRAGMAS
#else
#undef DUK_USE_GCC_PRAGMAS
#endif
/*
* Alternative customization header
*
* If you want to modify the final DUK_USE_xxx flags directly (without
* using the available DUK_OPT_xxx flags), define DUK_OPT_HAVE_CUSTOM_H
* and tweak the final flags there.
*/
#if defined(DUK_OPT_HAVE_CUSTOM_H)
#include "duk_custom.h"
#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)
DUK_INTERNAL_DECL duk_double_t duk_bi_date_get_now_gettimeofday(duk_context *ctx);
#define DUK_USE_DATE_GET_NOW(ctx) duk_bi_date_get_now_gettimeofday((ctx))
#elif defined(DUK_USE_DATE_NOW_TIME)
DUK_INTERNAL_DECL duk_double_t duk_bi_date_get_now_time(duk_context *ctx);
#define DUK_USE_DATE_GET_NOW(ctx) duk_bi_date_get_now_time((ctx))
#elif defined(DUK_USE_DATE_NOW_WINDOWS)
DUK_INTERNAL_DECL duk_double_t duk_bi_date_get_now_windows(duk_context *ctx);
#define DUK_USE_DATE_GET_NOW(ctx) duk_bi_date_get_now_windows((ctx))
#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)
DUK_INTERNAL_DECL duk_int_t duk_bi_date_get_local_tzoffset_gmtime(duk_double_t d);
#define DUK_USE_DATE_GET_LOCAL_TZOFFSET(d) duk_bi_date_get_local_tzoffset_gmtime((d))
#elif defined(DUK_USE_DATE_TZO_WINDOWS)
DUK_INTERNAL_DECL duk_int_t duk_bi_date_get_local_tzoffset_windows(duk_double_t d);
#define DUK_USE_DATE_GET_LOCAL_TZOFFSET(d) duk_bi_date_get_local_tzoffset_windows((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)
DUK_INTERNAL_DECL duk_bool_t duk_bi_date_parse_string_strptime(duk_context *ctx, const char *str);
#define DUK_USE_DATE_PARSE_STRING(ctx,str) duk_bi_date_parse_string_strptime((ctx), (str))
#elif defined(DUK_USE_DATE_PRS_GETDATE)
DUK_INTERNAL_DECL duk_bool_t duk_bi_date_parse_string_getdate(duk_context *ctx, const char *str);
#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)
DUK_INTERNAL_DECL duk_bool_t duk_bi_date_format_parts_strftime(duk_context *ctx, duk_int_t *parts, duk_int_t tzoffset, duk_small_uint_t flags);
#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
#endif /* DUK_COMPILING_DUKTAPE */
/*
* User declarations
*/
#if defined(DUK_OPT_DECLARE)
#define DUK_USE_USER_DECLARE() DUK_OPT_DECLARE
#else
#define DUK_USE_USER_DECLARE() /* no user declarations */
#endif
/*
* Autogenerated defaults
*/
#undef DUK_USE_DATE_PRS_GETDATE
#undef DUK_USE_INTEGER_ME
#define DUK_USE_JSON_DECNUMBER_FASTPATH
#define DUK_USE_JSON_DECSTRING_FASTPATH
#define DUK_USE_JSON_EATWHITE_FASTPATH
#define DUK_USE_JSON_QUOTESTRING_FASTPATH
#undef DUK_USE_JSON_STRINGIFY_FASTPATH
/*
* 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__ */
/*
* Sanity check for the final effective internal defines. Also
* double checks user tweaks made by an optional duk_custom.h header.
*/
/*
* Deprecated feature options.
*
* Catch so that user more easily notices and updates build.
*/
#if defined(DUK_OPT_NO_FUNC_STMT)
#error DUK_OPT_NO_FUNC_STMT is deprecated, use DUK_OPT_NO_NONSTD_FUNC_STMT
#endif
#if defined(DUK_OPT_FUNC_NONSTD_CALLER_PROPERTY)
#error DUK_OPT_FUNC_NONSTD_CALLER_PROPERTY is deprecated, use DUK_OPT_NONSTD_FUNC_CALLER_PROPERTY
#endif
#if defined(DUK_OPT_FUNC_NONSTD_SOURCE_PROPERTY)
#error DUK_OPT_FUNC_NONSTD_SOURCE_PROPERTY is deprecated, use DUK_OPT_NONSTD_FUNC_SOURCE_PROPERTY
#endif
#if defined(DUK_OPT_NO_ARRAY_SPLICE_NONSTD_DELCOUNT)
#error DUK_OPT_NO_ARRAY_SPLICE_NONSTD_DELCOUNT is deprecated, use DUK_OPT_NO_NONSTD_ARRAY_SPLICE_DELCOUNT
#endif
#if defined(DUK_OPT_NO_OBJECT_ES6_PROTO_PROPERTY)
#error DUK_OPT_NO_OBJECT_ES6_PROTO_PROPERTY is deprecated, use DUK_OPT_NO_ES6_OBJECT_PROTO_PROPERTY
#endif
#if defined(DUK_OPT_NO_OBJECT_ES6_SETPROTOTYPEOF)
#error DUK_OPT_NO_OBJECT_ES6_SETPROTOTYPEOF is deprecated, use DUK_OPT_NO_ES6_OBJECT_SETPROTOTYPEOF
#endif
#if defined(DUK_OPT_NO_JSONX)
#error DUK_OPT_NO_JSONX is deprecated, use DUK_OPT_NO_JX
#endif
#if defined(DUK_OPT_NO_JSONC)
#error DUK_OPT_NO_JSONC is deprecated, use DUK_OPT_NO_JC
#endif
/*
* Debug print consistency
*/
#if defined(DUK_USE_DPRINT) && !defined(DUK_USE_DEBUG)
#error DUK_USE_DPRINT without DUK_USE_DEBUG
#endif
#if defined(DUK_USE_DDPRINT) && !defined(DUK_USE_DEBUG)
#error DUK_USE_DDPRINT without DUK_USE_DEBUG
#endif
#if defined(DUK_USE_DDDPRINT) && !defined(DUK_USE_DEBUG)
#error DUK_USE_DDDPRINT without DUK_USE_DEBUG
#endif
#if defined(DUK_USE_HEAPPTR16) && defined(DUK_USE_DEBUG)
/* Debug code doesn't have access to 'heap' so it cannot decode pointers. */
#error debug printing cannot currently be used with heap pointer compression
#endif
/*
* Debugger consistency
*/
#if defined(DUK_USE_DEBUGGER_SUPPORT)
#if !defined(DUK_USE_INTERRUPT_COUNTER)
#error DUK_USE_INTERRUPT_COUNTER is needed when debugger support is enabled
#endif
#if !defined(DUK_USE_PC2LINE)
#error DUK_USE_PC2LINE is needed when debugger support is enabled
#endif
#endif
/*
* Garbage collection consistency
*/
#if defined(DUK_USE_REFERENCE_COUNTING) && !defined(DUK_USE_DOUBLE_LINKED_HEAP)
#error DUK_USE_REFERENCE_COUNTING defined without DUK_USE_DOUBLE_LINKED_HEAP
#endif
#if defined(DUK_USE_GC_TORTURE) && !defined(DUK_USE_MARK_AND_SWEEP)
#error DUK_USE_GC_TORTURE defined without DUK_USE_MARK_AND_SWEEP
#endif
/*
* Low memory feature consistency
*/
#if defined(DUK_USE_OBJSIZES16)
#if defined(DUK_USE_HOBJECT_HASH_PART)
#error DUK_USE_OBJSIZES16 assumes DUK_USE_HOBJECT_HASH_PART is not defined
#endif
#endif
#if defined(DUK_USE_STRTAB_CHAIN) && defined(DUK_USE_STRTAB_PROBE)
#error both DUK_USE_STRTAB_CHAIN and DUK_USE_STRTAB_PROBE defined
#endif
#if !defined(DUK_USE_STRTAB_CHAIN) && !defined(DUK_USE_STRTAB_PROBE)
#error neither DUK_USE_STRTAB_CHAIN nor DUK_USE_STRTAB_PROBE is defined
#endif
#endif /* DUK_CONFIG_H_INCLUDED */
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