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+/*
+ * Duktape public API for Duktape 1.2.2.
+ * See the API reference for documentation on call semantics.
+ * The exposed API is inside the DUK_API_PUBLIC_H_INCLUDED
+ * include guard. Other parts of the header are Duktape
+ * internal and related to platform/compiler/feature detection.
+ *
+ * Git commit 5f4302c732d21b3b721db3d3473db32e4eb92470 (v1.2.2).
+ *
+ * See Duktape AUTHORS.rst and LICENSE.txt for copyright and
+ * licensing information.
+ */
+
+/* LICENSE.txt */
+/*
+ * ===============
+ * Duktape license
+ * ===============
+ *
+ * (http://opensource.org/licenses/MIT)
+ *
+ * Copyright (c) 2013-2015 by Duktape authors (see AUTHORS.rst)
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ */
+
+/* AUTHORS.rst */
+/*
+ * ===============
+ * Duktape authors
+ * ===============
+ *
+ * Copyright
+ * =========
+ *
+ * Duktape copyrights are held by its authors. Each author has a copyright
+ * to their contribution, and agrees to irrevocably license the contribution
+ * under the Duktape ``LICENSE.txt``.
+ *
+ * Authors
+ * =======
+ *
+ * Please include an e-mail address, a link to your GitHub profile, or something
+ * similar to allow your contribution to be identified accurately.
+ *
+ * The following people have contributed code and agreed to irrevocably license
+ * their contributions under the Duktape ``LICENSE.txt`` (in order of appearance):
+ *
+ * * Sami Vaarala <sami.vaarala@iki.fi>
+ * * Niki Dobrev
+ * * Andreas \u00d6man <andreas@lonelycoder.com>
+ * * L\u00e1szl\u00f3 Lang\u00f3 <llango.u-szeged@partner.samsung.com>
+ * * Legimet <legimet.calc@gmail.com>
+ *
+ * Other contributions
+ * ===================
+ *
+ * The following people have contributed something other than code (e.g. reported
+ * bugs, provided ideas, etc; roughly in order of appearance):
+ *
+ * * Greg Burns
+ * * Anthony Rabine
+ * * Carlos Costa
+ * * Aur\u00e9lien Bouilland
+ * * Preet Desai (Pris Matic)
+ * * judofyr (http://www.reddit.com/user/judofyr)
+ * * Jason Woofenden
+ * * Micha\u0142 Przyby\u015b
+ * * Anthony Howe
+ * * Conrad Pankoff
+ * * Jim Schimpf
+ * * Rajaran Gaunker (https://github.com/zimbabao)
+ * * Andreas \u00d6man
+ * * Doug Sanden
+ * * Josh Engebretson (https://github.com/JoshEngebretson)
+ * * Remo Eichenberger (https://github.com/remoe)
+ * * Mamod Mehyar (https://github.com/mamod)
+ * * David Demelier (https://github.com/hftmarkand)
+ * * Tim Caswell (https://github.com/creationix)
+ * * Mitchell Blank Jr (https://github.com/mitchblank)
+ * * https://github.com/yushli
+ * * Seo Sanghyeon (https://github.com/sanxiyn)
+ * * Han ChoongWoo (https://github.com/tunz)
+ * * Joshua Peek (https://github.com/josh)
+ * * Bruce E. Pascoe (https://github.com/fatcerberus)
+ * * https://github.com/Kelledin
+ *
+ * If you are accidentally missing from this list, send me an e-mail
+ * (``sami.vaarala@iki.fi``) and I'll fix the omission.
+ */
+
+#ifndef DUKTAPE_H_INCLUDED
+#define DUKTAPE_H_INCLUDED
+
+#define DUK_SINGLE_FILE
+
+/*
+ * 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_FEATURES_H_INCLUDED
+#define DUK_FEATURES_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_RDTSC_AVAILABLE 1
+#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_RDTSC_AVAILABLE 1
+#else
+/* not available */
+#undef DUK_RDTSC_AVAILABLE
+#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
+
+/* 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
+
+#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
+
+/*
+ * 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>
+#else
+#error AmigaOS but not M68K, 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>
+
+/*
+ * 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
+
+#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 double typedef. */
+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
+
+/* 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
+
+/*
+ * 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_4
+#undef DUK_USE_ALIGN_8
+
+#if defined(DUK_F_EMSCRIPTEN)
+/* Required on at least some targets, so use whenever Emscripten used,
+ * regardless of compilation target.
+ */
+#define DUK_USE_ALIGN_8
+#elif defined(DUK_F_ARM)
+#define DUK_USE_ALIGN_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_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_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_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_UNALIGNED_ACCESSES_POSSIBLE
+#else
+/* Unknown, use safe default */
+#define DUK_USE_ALIGN_8
+#endif
+
+/* User forced alignment to 4 or 8. */
+#if defined(DUK_OPT_FORCE_ALIGN)
+#undef DUK_USE_UNALIGNED_ACCESSES_POSSIBLE
+#undef DUK_USE_ALIGN_4
+#undef DUK_USE_ALIGN_8
+#if (DUK_OPT_FORCE_ALIGN == 4)
+#define DUK_USE_ALIGN_4
+#elif (DUK_OPT_FORCE_ALIGN == 8)
+#define DUK_USE_ALIGN_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) && \
+ !defined(DUK_USE_ALIGN_4) && !defined(DUK_USE_ALIGN_8)
+/* 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 */
+#if !defined(DUK_F_BYTEORDER) && defined(DUK_F_AMIGAOS)
+#if defined(DUK_F_M68K)
+#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
+
+/* 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))
+
+/*
+ * 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
+
+/*
+ * 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
+
+/*
+ * 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.
+ */
+
+#if defined(DUK_F_CLANG)
+#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)
+#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_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
+
+/*
+ * Tagged type representation (duk_tval)
+ */
+
+#undef DUK_USE_PACKED_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_RDTSC_AVAILABLE) && 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 draft), 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 draft), 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
+
+/*
+ * 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_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
+ */
+
+#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
+
+/*
+ * 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
+
+/*
+ * 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
+
+#endif /* DUK_FEATURES_H_INCLUDED */
+
+/*
+ * BEGIN PUBLIC API
+ */
+
+#ifndef DUK_API_PUBLIC_H_INCLUDED
+#define DUK_API_PUBLIC_H_INCLUDED
+
+/*
+ * Avoid C++ name mangling
+ */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ * Some defines forwarded from feature detection
+ */
+
+#undef DUK_API_VARIADIC_MACROS
+#ifdef DUK_USE_VARIADIC_MACROS
+#define DUK_API_VARIADIC_MACROS
+#endif
+
+#define DUK_API_NORETURN(decl) DUK_NORETURN(decl)
+
+/*
+ * Public API specific typedefs
+ *
+ * (duk_context *) maps directly to internal type (duk_hthread *).
+ * Currently only primitive typedefs have a '_t' suffix.
+ *
+ * Many types are wrapped by Duktape for portability to rare platforms
+ * where e.g. 'int' is a 16-bit type. See practical typing discussion
+ * in Duktape web documentation.
+ */
+
+struct duk_memory_functions;
+struct duk_function_list_entry;
+struct duk_number_list_entry;
+
+typedef void duk_context;
+typedef struct duk_memory_functions duk_memory_functions;
+typedef struct duk_function_list_entry duk_function_list_entry;
+typedef struct duk_number_list_entry duk_number_list_entry;
+
+typedef duk_ret_t (*duk_c_function)(duk_context *ctx);
+typedef void *(*duk_alloc_function) (void *udata, duk_size_t size);
+typedef void *(*duk_realloc_function) (void *udata, void *ptr, duk_size_t size);
+typedef void (*duk_free_function) (void *udata, void *ptr);
+typedef void (*duk_fatal_function) (duk_context *ctx, duk_errcode_t code, const char *msg);
+typedef void (*duk_decode_char_function) (void *udata, duk_codepoint_t codepoint);
+typedef duk_codepoint_t (*duk_map_char_function) (void *udata, duk_codepoint_t codepoint);
+typedef duk_ret_t (*duk_safe_call_function) (duk_context *ctx);
+typedef duk_size_t (*duk_debug_read_function) (void *udata, char *buffer, duk_size_t length);
+typedef duk_size_t (*duk_debug_write_function) (void *udata, const char *buffer, duk_size_t length);
+typedef duk_size_t (*duk_debug_peek_function) (void *udata);
+typedef void (*duk_debug_read_flush_function) (void *udata);
+typedef void (*duk_debug_write_flush_function) (void *udata);
+typedef void (*duk_debug_detached_function) (void *udata);
+
+struct duk_memory_functions {
+ duk_alloc_function alloc_func;
+ duk_realloc_function realloc_func;
+ duk_free_function free_func;
+ void *udata;
+};
+
+struct duk_function_list_entry {
+ const char *key;
+ duk_c_function value;
+ duk_idx_t nargs;
+};
+
+struct duk_number_list_entry {
+ const char *key;
+ duk_double_t value;
+};
+
+/*
+ * Constants
+ */
+
+/* Duktape version, (major * 10000) + (minor * 100) + patch. Allows C code
+ * to #ifdef against Duktape API version. The same value is also available
+ * to Ecmascript code in Duktape.version. Unofficial development snapshots
+ * have 99 for patch level (e.g. 0.10.99 would be a development version
+ * after 0.10.0 but before the next official release).
+ */
+#define DUK_VERSION 10202L
+
+/* Git describe for Duktape build. Useful for non-official snapshot builds
+ * so that application code can easily log which Duktape snapshot was used.
+ * Not available in the Ecmascript environment.
+ */
+#define DUK_GIT_DESCRIBE "v1.2.2"
+
+/* Duktape debug protocol version used by this build. */
+#define DUK_DEBUG_PROTOCOL_VERSION 1
+
+/* Used to represent invalid index; if caller uses this without checking,
+ * this index will map to a non-existent stack entry. Also used in some
+ * API calls as a marker to denote "no value".
+ */
+#define DUK_INVALID_INDEX DUK_IDX_MIN
+
+/* Indicates that a native function does not have a fixed number of args,
+ * and the argument stack should not be capped/extended at all.
+ */
+#define DUK_VARARGS ((duk_int_t) (-1))
+
+/* Number of value stack entries (in addition to actual call arguments)
+ * guaranteed to be allocated on entry to a Duktape/C function.
+ */
+#define DUK_API_ENTRY_STACK 64
+
+/* Value types, used by e.g. duk_get_type() */
+#define DUK_TYPE_NONE 0 /* no value, e.g. invalid index */
+#define DUK_TYPE_UNDEFINED 1 /* Ecmascript undefined */
+#define DUK_TYPE_NULL 2 /* Ecmascript null */
+#define DUK_TYPE_BOOLEAN 3 /* Ecmascript boolean: 0 or 1 */
+#define DUK_TYPE_NUMBER 4 /* Ecmascript number: double */
+#define DUK_TYPE_STRING 5 /* Ecmascript string: CESU-8 / extended UTF-8 encoded */
+#define DUK_TYPE_OBJECT 6 /* Ecmascript object: includes objects, arrays, functions, threads */
+#define DUK_TYPE_BUFFER 7 /* fixed or dynamic, garbage collected byte buffer */
+#define DUK_TYPE_POINTER 8 /* raw void pointer */
+#define DUK_TYPE_LIGHTFUNC 9 /* lightweight function pointer */
+
+/* Value mask types, used by e.g. duk_get_type_mask() */
+#define DUK_TYPE_MASK_NONE (1 << DUK_TYPE_NONE)
+#define DUK_TYPE_MASK_UNDEFINED (1 << DUK_TYPE_UNDEFINED)
+#define DUK_TYPE_MASK_NULL (1 << DUK_TYPE_NULL)
+#define DUK_TYPE_MASK_BOOLEAN (1 << DUK_TYPE_BOOLEAN)
+#define DUK_TYPE_MASK_NUMBER (1 << DUK_TYPE_NUMBER)
+#define DUK_TYPE_MASK_STRING (1 << DUK_TYPE_STRING)
+#define DUK_TYPE_MASK_OBJECT (1 << DUK_TYPE_OBJECT)
+#define DUK_TYPE_MASK_BUFFER (1 << DUK_TYPE_BUFFER)
+#define DUK_TYPE_MASK_POINTER (1 << DUK_TYPE_POINTER)
+#define DUK_TYPE_MASK_LIGHTFUNC (1 << DUK_TYPE_LIGHTFUNC)
+#define DUK_TYPE_MASK_THROW (1 << 10) /* internal flag value: throw if mask doesn't match */
+
+/* Coercion hints */
+#define DUK_HINT_NONE 0 /* prefer number, unless input is a Date, in which
+ * case prefer string (E5 Section 8.12.8)
+ */
+#define DUK_HINT_STRING 1 /* prefer string */
+#define DUK_HINT_NUMBER 2 /* prefer number */
+
+/* Enumeration flags for duk_enum() */
+#define DUK_ENUM_INCLUDE_NONENUMERABLE (1 << 0) /* enumerate non-numerable properties in addition to enumerable */
+#define DUK_ENUM_INCLUDE_INTERNAL (1 << 1) /* enumerate internal properties (regardless of enumerability) */
+#define DUK_ENUM_OWN_PROPERTIES_ONLY (1 << 2) /* don't walk prototype chain, only check own properties */
+#define DUK_ENUM_ARRAY_INDICES_ONLY (1 << 3) /* only enumerate array indices */
+#define DUK_ENUM_SORT_ARRAY_INDICES (1 << 4) /* sort array indices, use with DUK_ENUM_ARRAY_INDICES_ONLY */
+#define DUK_ENUM_NO_PROXY_BEHAVIOR (1 << 5) /* enumerate a proxy object itself without invoking proxy behavior */
+
+/* Compilation flags for duk_compile() and duk_eval() */
+#define DUK_COMPILE_EVAL (1 << 0) /* compile eval code (instead of program) */
+#define DUK_COMPILE_FUNCTION (1 << 1) /* compile function code (instead of program) */
+#define DUK_COMPILE_STRICT (1 << 2) /* use strict (outer) context for program, eval, or function */
+#define DUK_COMPILE_SAFE (1 << 3) /* (internal) catch compilation errors */
+#define DUK_COMPILE_NORESULT (1 << 4) /* (internal) omit eval result */
+#define DUK_COMPILE_NOSOURCE (1 << 5) /* (internal) no source string on stack */
+#define DUK_COMPILE_STRLEN (1 << 6) /* (internal) take strlen() of src_buffer (avoids double evaluation in macro) */
+
+/* Flags for duk_def_prop() and its variants */
+#define DUK_DEFPROP_WRITABLE (1 << 0) /* set writable (effective if DUK_DEFPROP_HAVE_WRITABLE set) */
+#define DUK_DEFPROP_ENUMERABLE (1 << 1) /* set enumerable (effective if DUK_DEFPROP_HAVE_ENUMERABLE set) */
+#define DUK_DEFPROP_CONFIGURABLE (1 << 2) /* set configurable (effective if DUK_DEFPROP_HAVE_CONFIGURABLE set) */
+#define DUK_DEFPROP_HAVE_WRITABLE (1 << 3) /* set/clear writable */
+#define DUK_DEFPROP_HAVE_ENUMERABLE (1 << 4) /* set/clear enumerable */
+#define DUK_DEFPROP_HAVE_CONFIGURABLE (1 << 5) /* set/clear configurable */
+#define DUK_DEFPROP_HAVE_VALUE (1 << 6) /* set value (given on value stack) */
+#define DUK_DEFPROP_HAVE_GETTER (1 << 7) /* set getter (given on value stack) */
+#define DUK_DEFPROP_HAVE_SETTER (1 << 8) /* set setter (given on value stack) */
+#define DUK_DEFPROP_FORCE (1 << 9) /* force change if possible, may still fail for e.g. virtual properties */
+
+/* Flags for duk_push_thread_raw() */
+#define DUK_THREAD_NEW_GLOBAL_ENV (1 << 0) /* create a new global environment */
+
+/* Flags for duk_push_string_file_raw() */
+#define DUK_STRING_PUSH_SAFE (1 << 0) /* no error if file does not exist */
+
+/* Duktape specific error codes */
+#define DUK_ERR_NONE 0 /* no error (e.g. from duk_get_error_code()) */
+#define DUK_ERR_UNIMPLEMENTED_ERROR 50 /* UnimplementedError */
+#define DUK_ERR_UNSUPPORTED_ERROR 51 /* UnsupportedError */
+#define DUK_ERR_INTERNAL_ERROR 52 /* InternalError */
+#define DUK_ERR_ALLOC_ERROR 53 /* AllocError */
+#define DUK_ERR_ASSERTION_ERROR 54 /* AssertionError */
+#define DUK_ERR_API_ERROR 55 /* APIError */
+#define DUK_ERR_UNCAUGHT_ERROR 56 /* UncaughtError */
+
+/* Ecmascript E5 specification error codes */
+#define DUK_ERR_ERROR 100 /* Error */
+#define DUK_ERR_EVAL_ERROR 101 /* EvalError */
+#define DUK_ERR_RANGE_ERROR 102 /* RangeError */
+#define DUK_ERR_REFERENCE_ERROR 103 /* ReferenceError */
+#define DUK_ERR_SYNTAX_ERROR 104 /* SyntaxError */
+#define DUK_ERR_TYPE_ERROR 105 /* TypeError */
+#define DUK_ERR_URI_ERROR 106 /* URIError */
+
+/* Return codes for C functions (shortcut for throwing an error) */
+#define DUK_RET_UNIMPLEMENTED_ERROR (-DUK_ERR_UNIMPLEMENTED_ERROR)
+#define DUK_RET_UNSUPPORTED_ERROR (-DUK_ERR_UNSUPPORTED_ERROR)
+#define DUK_RET_INTERNAL_ERROR (-DUK_ERR_INTERNAL_ERROR)
+#define DUK_RET_ALLOC_ERROR (-DUK_ERR_ALLOC_ERROR)
+#define DUK_RET_ASSERTION_ERROR (-DUK_ERR_ASSERTION_ERROR)
+#define DUK_RET_API_ERROR (-DUK_ERR_API_ERROR)
+#define DUK_RET_UNCAUGHT_ERROR (-DUK_ERR_UNCAUGHT_ERROR)
+#define DUK_RET_ERROR (-DUK_ERR_ERROR)
+#define DUK_RET_EVAL_ERROR (-DUK_ERR_EVAL_ERROR)
+#define DUK_RET_RANGE_ERROR (-DUK_ERR_RANGE_ERROR)
+#define DUK_RET_REFERENCE_ERROR (-DUK_ERR_REFERENCE_ERROR)
+#define DUK_RET_SYNTAX_ERROR (-DUK_ERR_SYNTAX_ERROR)
+#define DUK_RET_TYPE_ERROR (-DUK_ERR_TYPE_ERROR)
+#define DUK_RET_URI_ERROR (-DUK_ERR_URI_ERROR)
+
+/* Return codes for protected calls (duk_safe_call(), duk_pcall()). */
+#define DUK_EXEC_SUCCESS 0
+#define DUK_EXEC_ERROR 1
+
+/* Log levels */
+#define DUK_LOG_TRACE 0
+#define DUK_LOG_DEBUG 1
+#define DUK_LOG_INFO 2
+#define DUK_LOG_WARN 3
+#define DUK_LOG_ERROR 4
+#define DUK_LOG_FATAL 5
+
+/*
+ * If no variadic macros, __FILE__ and __LINE__ are passed through globals
+ * which is ugly and not thread safe.
+ */
+
+#ifndef DUK_API_VARIADIC_MACROS
+DUK_EXTERNAL_DECL const char *duk_api_global_filename;
+DUK_EXTERNAL_DECL duk_int_t duk_api_global_line;
+#endif
+
+/*
+ * Context management
+ */
+
+DUK_EXTERNAL_DECL
+duk_context *duk_create_heap(duk_alloc_function alloc_func,
+ duk_realloc_function realloc_func,
+ duk_free_function free_func,
+ void *heap_udata,
+ duk_fatal_function fatal_handler);
+DUK_EXTERNAL_DECL void duk_destroy_heap(duk_context *ctx);
+
+#define duk_create_heap_default() \
+ duk_create_heap(NULL, NULL, NULL, NULL, NULL)
+
+/*
+ * Memory management
+ *
+ * Raw functions have no side effects (cannot trigger GC).
+ */
+
+DUK_EXTERNAL_DECL void *duk_alloc_raw(duk_context *ctx, duk_size_t size);
+DUK_EXTERNAL_DECL void duk_free_raw(duk_context *ctx, void *ptr);
+DUK_EXTERNAL_DECL void *duk_realloc_raw(duk_context *ctx, void *ptr, duk_size_t size);
+DUK_EXTERNAL_DECL void *duk_alloc(duk_context *ctx, duk_size_t size);
+DUK_EXTERNAL_DECL void duk_free(duk_context *ctx, void *ptr);
+DUK_EXTERNAL_DECL void *duk_realloc(duk_context *ctx, void *ptr, duk_size_t size);
+DUK_EXTERNAL_DECL void duk_get_memory_functions(duk_context *ctx, duk_memory_functions *out_funcs);
+DUK_EXTERNAL_DECL void duk_gc(duk_context *ctx, duk_uint_t flags);
+
+/*
+ * Error handling
+ */
+
+DUK_API_NORETURN(DUK_EXTERNAL_DECL void duk_throw(duk_context *ctx));
+DUK_API_NORETURN(DUK_EXTERNAL_DECL void duk_fatal(duk_context *ctx, duk_errcode_t err_code, const char *err_msg));
+
+DUK_API_NORETURN(DUK_EXTERNAL_DECL void duk_error_raw(duk_context *ctx, duk_errcode_t err_code, const char *filename, duk_int_t line, const char *fmt, ...));
+
+#ifdef DUK_API_VARIADIC_MACROS
+#define duk_error(ctx,err_code,...) \
+ duk_error_raw((ctx), (duk_errcode_t) (err_code), (const char *) (__FILE__), (duk_int_t) (__LINE__), __VA_ARGS__)
+#else
+DUK_API_NORETURN(DUK_EXTERNAL_DECL void duk_error_stash(duk_context *ctx, duk_errcode_t err_code, const char *fmt, ...));
+/* One problem with this macro is that expressions like the following fail
+ * to compile: "(void) duk_error(...)". But because duk_error() is noreturn,
+ * they make little sense anyway.
+ */
+#define duk_error \
+ (duk_api_global_filename = (const char *) (__FILE__), \
+ duk_api_global_line = (duk_int_t) (__LINE__), \
+ duk_error_stash) /* last value is func pointer, arguments follow in parens */
+#endif
+
+DUK_API_NORETURN(DUK_EXTERNAL_DECL void duk_error_va_raw(duk_context *ctx, duk_errcode_t err_code, const char *filename, duk_int_t line, const char *fmt, va_list ap));
+#define duk_error_va(ctx,err_code,fmt,ap) \
+ duk_error_va_raw((ctx), (duk_errcode_t) (err_code), (const char *) (__FILE__), (duk_int_t) (__LINE__), (fmt), (ap))
+
+/*
+ * Other state related functions
+ */
+
+DUK_EXTERNAL_DECL duk_bool_t duk_is_strict_call(duk_context *ctx);
+DUK_EXTERNAL_DECL duk_bool_t duk_is_constructor_call(duk_context *ctx);
+
+/*
+ * Stack management
+ */
+
+DUK_EXTERNAL_DECL duk_idx_t duk_normalize_index(duk_context *ctx, duk_idx_t index);
+DUK_EXTERNAL_DECL duk_idx_t duk_require_normalize_index(duk_context *ctx, duk_idx_t index);
+DUK_EXTERNAL_DECL duk_bool_t duk_is_valid_index(duk_context *ctx, duk_idx_t index);
+DUK_EXTERNAL_DECL void duk_require_valid_index(duk_context *ctx, duk_idx_t index);
+
+DUK_EXTERNAL_DECL duk_idx_t duk_get_top(duk_context *ctx);
+DUK_EXTERNAL_DECL void duk_set_top(duk_context *ctx, duk_idx_t index);
+DUK_EXTERNAL_DECL duk_idx_t duk_get_top_index(duk_context *ctx);
+DUK_EXTERNAL_DECL duk_idx_t duk_require_top_index(duk_context *ctx);
+
+/* Although extra/top could be an unsigned type here, using a signed type
+ * makes the API more robust to calling code calculation errors or corner
+ * cases (where caller might occasionally come up with negative values).
+ * Negative values are treated as zero, which is better than casting them
+ * to a large unsigned number. (This principle is used elsewhere in the
+ * API too.)
+ */
+DUK_EXTERNAL_DECL duk_bool_t duk_check_stack(duk_context *ctx, duk_idx_t extra);
+DUK_EXTERNAL_DECL void duk_require_stack(duk_context *ctx, duk_idx_t extra);
+DUK_EXTERNAL_DECL duk_bool_t duk_check_stack_top(duk_context *ctx, duk_idx_t top);
+DUK_EXTERNAL_DECL void duk_require_stack_top(duk_context *ctx, duk_idx_t top);
+
+/*
+ * Stack manipulation (other than push/pop)
+ */
+
+DUK_EXTERNAL_DECL void duk_swap(duk_context *ctx, duk_idx_t index1, duk_idx_t index2);
+DUK_EXTERNAL_DECL void duk_swap_top(duk_context *ctx, duk_idx_t index);
+DUK_EXTERNAL_DECL void duk_dup(duk_context *ctx, duk_idx_t from_index);
+DUK_EXTERNAL_DECL void duk_dup_top(duk_context *ctx);
+DUK_EXTERNAL_DECL void duk_insert(duk_context *ctx, duk_idx_t to_index);
+DUK_EXTERNAL_DECL void duk_replace(duk_context *ctx, duk_idx_t to_index);
+DUK_EXTERNAL_DECL void duk_copy(duk_context *ctx, duk_idx_t from_index, duk_idx_t to_index);
+DUK_EXTERNAL_DECL void duk_remove(duk_context *ctx, duk_idx_t index);
+DUK_EXTERNAL_DECL void duk_xcopymove_raw(duk_context *to_ctx, duk_context *from_ctx, duk_idx_t count, duk_bool_t is_copy);
+
+#define duk_xmove_top(to_ctx,from_ctx,count) \
+ duk_xcopymove_raw((to_ctx), (from_ctx), (count), 0 /*is_copy*/)
+#define duk_xcopy_top(to_ctx,from_ctx,count) \
+ duk_xcopymove_raw((to_ctx), (from_ctx), (count), 1 /*is_copy*/)
+
+/*
+ * Push operations
+ *
+ * Push functions return the absolute (relative to bottom of frame)
+ * position of the pushed value for convenience.
+ *
+ * Note: duk_dup() is technically a push.
+ */
+
+DUK_EXTERNAL_DECL void duk_push_undefined(duk_context *ctx);
+DUK_EXTERNAL_DECL void duk_push_null(duk_context *ctx);
+DUK_EXTERNAL_DECL void duk_push_boolean(duk_context *ctx, duk_bool_t val);
+DUK_EXTERNAL_DECL void duk_push_true(duk_context *ctx);
+DUK_EXTERNAL_DECL void duk_push_false(duk_context *ctx);
+DUK_EXTERNAL_DECL void duk_push_number(duk_context *ctx, duk_double_t val);
+DUK_EXTERNAL_DECL void duk_push_nan(duk_context *ctx);
+DUK_EXTERNAL_DECL void duk_push_int(duk_context *ctx, duk_int_t val);
+DUK_EXTERNAL_DECL void duk_push_uint(duk_context *ctx, duk_uint_t val);
+DUK_EXTERNAL_DECL const char *duk_push_string(duk_context *ctx, const char *str);
+DUK_EXTERNAL_DECL const char *duk_push_lstring(duk_context *ctx, const char *str, duk_size_t len);
+DUK_EXTERNAL_DECL void duk_push_pointer(duk_context *ctx, void *p);
+DUK_EXTERNAL_DECL const char *duk_push_sprintf(duk_context *ctx, const char *fmt, ...);
+DUK_EXTERNAL_DECL const char *duk_push_vsprintf(duk_context *ctx, const char *fmt, va_list ap);
+
+DUK_EXTERNAL_DECL const char *duk_push_string_file_raw(duk_context *ctx, const char *path, duk_uint_t flags);
+#define duk_push_string_file(ctx,path) \
+ duk_push_string_file_raw((ctx), (path), 0)
+
+DUK_EXTERNAL_DECL void duk_push_this(duk_context *ctx);
+DUK_EXTERNAL_DECL void duk_push_current_function(duk_context *ctx);
+DUK_EXTERNAL_DECL void duk_push_current_thread(duk_context *ctx);
+DUK_EXTERNAL_DECL void duk_push_global_object(duk_context *ctx);
+DUK_EXTERNAL_DECL void duk_push_heap_stash(duk_context *ctx);
+DUK_EXTERNAL_DECL void duk_push_global_stash(duk_context *ctx);
+DUK_EXTERNAL_DECL void duk_push_thread_stash(duk_context *ctx, duk_context *target_ctx);
+
+DUK_EXTERNAL_DECL duk_idx_t duk_push_object(duk_context *ctx);
+DUK_EXTERNAL_DECL duk_idx_t duk_push_array(duk_context *ctx);
+DUK_EXTERNAL_DECL duk_idx_t duk_push_c_function(duk_context *ctx, duk_c_function func, duk_idx_t nargs);
+DUK_EXTERNAL_DECL duk_idx_t duk_push_c_lightfunc(duk_context *ctx, duk_c_function func, duk_idx_t nargs, duk_idx_t length, duk_int_t magic);
+DUK_EXTERNAL_DECL duk_idx_t duk_push_thread_raw(duk_context *ctx, duk_uint_t flags);
+
+#define duk_push_thread(ctx) \
+ duk_push_thread_raw((ctx), 0 /*flags*/)
+
+#define duk_push_thread_new_globalenv(ctx) \
+ duk_push_thread_raw((ctx), DUK_THREAD_NEW_GLOBAL_ENV /*flags*/)
+
+DUK_EXTERNAL_DECL duk_idx_t duk_push_error_object_raw(duk_context *ctx, duk_errcode_t err_code, const char *filename, duk_int_t line, const char *fmt, ...);
+
+#ifdef DUK_API_VARIADIC_MACROS
+#define duk_push_error_object(ctx,err_code,...) \
+ duk_push_error_object_raw((ctx), (err_code), (const char *) (__FILE__), (duk_int_t) (__LINE__), __VA_ARGS__)
+#else
+DUK_EXTERNAL_DECL duk_idx_t duk_push_error_object_stash(duk_context *ctx, duk_errcode_t err_code, const char *fmt, ...);
+/* Note: parentheses are required so that the comma expression works in assignments. */
+#define duk_push_error_object \
+ (duk_api_global_filename = (const char *) (__FILE__), \
+ duk_api_global_line = (duk_int_t) (__LINE__), \
+ duk_push_error_object_stash) /* last value is func pointer, arguments follow in parens */
+#endif
+
+DUK_EXTERNAL_DECL duk_idx_t duk_push_error_object_va_raw(duk_context *ctx, duk_errcode_t err_code, const char *filename, duk_int_t line, const char *fmt, va_list ap);
+#define duk_push_error_object_va(ctx,err_code,fmt,ap) \
+ duk_push_error_object_va_raw((ctx), (err_code), (const char *) (__FILE__), (duk_int_t) (__LINE__), (fmt), (ap))
+
+#define DUK_BUF_FLAG_DYNAMIC (1 << 0) /* internal flag: dynamic buffer */
+#define DUK_BUF_FLAG_NOZERO (1 << 1) /* internal flag: don't zero allocated buffer */
+
+DUK_EXTERNAL_DECL void *duk_push_buffer_raw(duk_context *ctx, duk_size_t size, duk_small_uint_t flags);
+
+#define duk_push_buffer(ctx,size,dynamic) \
+ duk_push_buffer_raw((ctx), (size), (dynamic));
+#define duk_push_fixed_buffer(ctx,size) \
+ duk_push_buffer_raw((ctx), (size), 0 /*dynamic*/)
+#define duk_push_dynamic_buffer(ctx,size) \
+ duk_push_buffer_raw((ctx), (size), 1 /*dynamic*/)
+
+DUK_EXTERNAL_DECL duk_idx_t duk_push_heapptr(duk_context *ctx, void *ptr);
+
+/*
+ * Pop operations
+ */
+
+DUK_EXTERNAL_DECL void duk_pop(duk_context *ctx);
+DUK_EXTERNAL_DECL void duk_pop_n(duk_context *ctx, duk_idx_t count);
+DUK_EXTERNAL_DECL void duk_pop_2(duk_context *ctx);
+DUK_EXTERNAL_DECL void duk_pop_3(duk_context *ctx);
+
+/*
+ * Type checks
+ *
+ * duk_is_none(), which would indicate whether index it outside of stack,
+ * is not needed; duk_is_valid_index() gives the same information.
+ */
+
+DUK_EXTERNAL_DECL duk_int_t duk_get_type(duk_context *ctx, duk_idx_t index);
+DUK_EXTERNAL_DECL duk_bool_t duk_check_type(duk_context *ctx, duk_idx_t index, duk_int_t type);
+DUK_EXTERNAL_DECL duk_uint_t duk_get_type_mask(duk_context *ctx, duk_idx_t index);
+DUK_EXTERNAL_DECL duk_bool_t duk_check_type_mask(duk_context *ctx, duk_idx_t index, duk_uint_t mask);
+
+DUK_EXTERNAL_DECL duk_bool_t duk_is_undefined(duk_context *ctx, duk_idx_t index);
+DUK_EXTERNAL_DECL duk_bool_t duk_is_null(duk_context *ctx, duk_idx_t index);
+DUK_EXTERNAL_DECL duk_bool_t duk_is_null_or_undefined(duk_context *ctx, duk_idx_t index);
+DUK_EXTERNAL_DECL duk_bool_t duk_is_boolean(duk_context *ctx, duk_idx_t index);
+DUK_EXTERNAL_DECL duk_bool_t duk_is_number(duk_context *ctx, duk_idx_t index);
+DUK_EXTERNAL_DECL duk_bool_t duk_is_nan(duk_context *ctx, duk_idx_t index);
+DUK_EXTERNAL_DECL duk_bool_t duk_is_string(duk_context *ctx, duk_idx_t index);
+DUK_EXTERNAL_DECL duk_bool_t duk_is_object(duk_context *ctx, duk_idx_t index);
+DUK_EXTERNAL_DECL duk_bool_t duk_is_buffer(duk_context *ctx, duk_idx_t index);
+DUK_EXTERNAL_DECL duk_bool_t duk_is_pointer(duk_context *ctx, duk_idx_t index);
+DUK_EXTERNAL_DECL duk_bool_t duk_is_lightfunc(duk_context *ctx, duk_idx_t index);
+
+DUK_EXTERNAL_DECL duk_bool_t duk_is_array(duk_context *ctx, duk_idx_t index);
+DUK_EXTERNAL_DECL duk_bool_t duk_is_function(duk_context *ctx, duk_idx_t index);
+DUK_EXTERNAL_DECL duk_bool_t duk_is_c_function(duk_context *ctx, duk_idx_t index);
+DUK_EXTERNAL_DECL duk_bool_t duk_is_ecmascript_function(duk_context *ctx, duk_idx_t index);
+DUK_EXTERNAL_DECL duk_bool_t duk_is_bound_function(duk_context *ctx, duk_idx_t index);
+DUK_EXTERNAL_DECL duk_bool_t duk_is_thread(duk_context *ctx, duk_idx_t index);
+
+DUK_EXTERNAL_DECL duk_bool_t duk_is_callable(duk_context *ctx, duk_idx_t index);
+DUK_EXTERNAL_DECL duk_bool_t duk_is_dynamic_buffer(duk_context *ctx, duk_idx_t index);
+DUK_EXTERNAL_DECL duk_bool_t duk_is_fixed_buffer(duk_context *ctx, duk_idx_t index);
+
+DUK_EXTERNAL_DECL duk_bool_t duk_is_primitive(duk_context *ctx, duk_idx_t index);
+#define duk_is_object_coercible(ctx,index) \
+ duk_check_type_mask((ctx), (index), DUK_TYPE_MASK_BOOLEAN | \
+ DUK_TYPE_MASK_NUMBER | \
+ DUK_TYPE_MASK_STRING | \
+ DUK_TYPE_MASK_OBJECT | \
+ DUK_TYPE_MASK_BUFFER | \
+ DUK_TYPE_MASK_POINTER | \
+ DUK_TYPE_MASK_LIGHTFUNC)
+
+DUK_EXTERNAL_DECL duk_errcode_t duk_get_error_code(duk_context *ctx, duk_idx_t index);
+#define duk_is_error(ctx,index) \
+ (duk_get_error_code((ctx), (index)) != 0)
+
+/*
+ * Get operations: no coercion, returns default value for invalid
+ * indices and invalid value types.
+ *
+ * duk_get_undefined() and duk_get_null() would be pointless and
+ * are not included.
+ */
+
+DUK_EXTERNAL_DECL duk_bool_t duk_get_boolean(duk_context *ctx, duk_idx_t index);
+DUK_EXTERNAL_DECL duk_double_t duk_get_number(duk_context *ctx, duk_idx_t index);
+DUK_EXTERNAL_DECL duk_int_t duk_get_int(duk_context *ctx, duk_idx_t index);
+DUK_EXTERNAL_DECL duk_uint_t duk_get_uint(duk_context *ctx, duk_idx_t index);
+DUK_EXTERNAL_DECL const char *duk_get_string(duk_context *ctx, duk_idx_t index);
+DUK_EXTERNAL_DECL const char *duk_get_lstring(duk_context *ctx, duk_idx_t index, duk_size_t *out_len);
+DUK_EXTERNAL_DECL void *duk_get_buffer(duk_context *ctx, duk_idx_t index, duk_size_t *out_size);
+DUK_EXTERNAL_DECL void *duk_get_pointer(duk_context *ctx, duk_idx_t index);
+DUK_EXTERNAL_DECL duk_c_function duk_get_c_function(duk_context *ctx, duk_idx_t index);
+DUK_EXTERNAL_DECL duk_context *duk_get_context(duk_context *ctx, duk_idx_t index);
+DUK_EXTERNAL_DECL void *duk_get_heapptr(duk_context *ctx, duk_idx_t index);
+DUK_EXTERNAL_DECL duk_size_t duk_get_length(duk_context *ctx, duk_idx_t index);
+
+/*
+ * Require operations: no coercion, throw error if index or type
+ * is incorrect. No defaulting.
+ */
+
+#define duk_require_type_mask(ctx,index,mask) \
+ ((void) duk_check_type_mask((ctx), (index), (mask) | DUK_TYPE_MASK_THROW))
+
+DUK_EXTERNAL_DECL void duk_require_undefined(duk_context *ctx, duk_idx_t index);
+DUK_EXTERNAL_DECL void duk_require_null(duk_context *ctx, duk_idx_t index);
+DUK_EXTERNAL_DECL duk_bool_t duk_require_boolean(duk_context *ctx, duk_idx_t index);
+DUK_EXTERNAL_DECL duk_double_t duk_require_number(duk_context *ctx, duk_idx_t index);
+DUK_EXTERNAL_DECL duk_int_t duk_require_int(duk_context *ctx, duk_idx_t index);
+DUK_EXTERNAL_DECL duk_uint_t duk_require_uint(duk_context *ctx, duk_idx_t index);
+DUK_EXTERNAL_DECL const char *duk_require_string(duk_context *ctx, duk_idx_t index);
+DUK_EXTERNAL_DECL const char *duk_require_lstring(duk_context *ctx, duk_idx_t index, duk_size_t *out_len);
+DUK_EXTERNAL_DECL void *duk_require_buffer(duk_context *ctx, duk_idx_t index, duk_size_t *out_size);
+DUK_EXTERNAL_DECL void *duk_require_pointer(duk_context *ctx, duk_idx_t index);
+DUK_EXTERNAL_DECL duk_c_function duk_require_c_function(duk_context *ctx, duk_idx_t index);
+DUK_EXTERNAL_DECL duk_context *duk_require_context(duk_context *ctx, duk_idx_t index);
+DUK_EXTERNAL_DECL void *duk_require_heapptr(duk_context *ctx, duk_idx_t index);
+
+#define duk_require_object_coercible(ctx,index) \
+ ((void) duk_check_type_mask((ctx), (index), DUK_TYPE_MASK_BOOLEAN | \
+ DUK_TYPE_MASK_NUMBER | \
+ DUK_TYPE_MASK_STRING | \
+ DUK_TYPE_MASK_OBJECT | \
+ DUK_TYPE_MASK_BUFFER | \
+ DUK_TYPE_MASK_POINTER | \
+ DUK_TYPE_MASK_LIGHTFUNC | \
+ DUK_TYPE_MASK_THROW))
+
+/*
+ * Coercion operations: in-place coercion, return coerced value where
+ * applicable. If index is invalid, throw error. Some coercions may
+ * throw an expected error (e.g. from a toString() or valueOf() call)
+ * or an internal error (e.g. from out of memory).
+ */
+
+DUK_EXTERNAL_DECL void duk_to_undefined(duk_context *ctx, duk_idx_t index);
+DUK_EXTERNAL_DECL void duk_to_null(duk_context *ctx, duk_idx_t index);
+DUK_EXTERNAL_DECL duk_bool_t duk_to_boolean(duk_context *ctx, duk_idx_t index);
+DUK_EXTERNAL_DECL duk_double_t duk_to_number(duk_context *ctx, duk_idx_t index);
+DUK_EXTERNAL_DECL duk_int_t duk_to_int(duk_context *ctx, duk_idx_t index);
+DUK_EXTERNAL_DECL duk_uint_t duk_to_uint(duk_context *ctx, duk_idx_t index);
+DUK_EXTERNAL_DECL duk_int32_t duk_to_int32(duk_context *ctx, duk_idx_t index);
+DUK_EXTERNAL_DECL duk_uint32_t duk_to_uint32(duk_context *ctx, duk_idx_t index);
+DUK_EXTERNAL_DECL duk_uint16_t duk_to_uint16(duk_context *ctx, duk_idx_t index);
+DUK_EXTERNAL_DECL const char *duk_to_string(duk_context *ctx, duk_idx_t index);
+DUK_EXTERNAL_DECL const char *duk_to_lstring(duk_context *ctx, duk_idx_t index, duk_size_t *out_len);
+DUK_EXTERNAL_DECL void *duk_to_buffer_raw(duk_context *ctx, duk_idx_t index, duk_size_t *out_size, duk_uint_t flags);
+DUK_EXTERNAL_DECL void *duk_to_pointer(duk_context *ctx, duk_idx_t index);
+DUK_EXTERNAL_DECL void duk_to_object(duk_context *ctx, duk_idx_t index);
+DUK_EXTERNAL_DECL void duk_to_defaultvalue(duk_context *ctx, duk_idx_t index, duk_int_t hint);
+DUK_EXTERNAL_DECL void duk_to_primitive(duk_context *ctx, duk_idx_t index, duk_int_t hint);
+
+#define DUK_BUF_MODE_FIXED 0 /* internal: request fixed buffer result */
+#define DUK_BUF_MODE_DYNAMIC 1 /* internal: request dynamic buffer result */
+#define DUK_BUF_MODE_DONTCARE 2 /* internal: don't care about fixed/dynamic nature */
+
+#define duk_to_buffer(ctx,index,out_size) \
+ duk_to_buffer_raw((ctx), (index), (out_size), DUK_BUF_MODE_DONTCARE)
+#define duk_to_fixed_buffer(ctx,index,out_size) \
+ duk_to_buffer_raw((ctx), (index), (out_size), DUK_BUF_MODE_FIXED)
+#define duk_to_dynamic_buffer(ctx,index,out_size) \
+ duk_to_buffer_raw((ctx), (index), (out_size), DUK_BUF_MODE_DYNAMIC)
+
+/* safe variants of a few coercion operations */
+DUK_EXTERNAL_DECL const char *duk_safe_to_lstring(duk_context *ctx, duk_idx_t index, duk_size_t *out_len);
+#define duk_safe_to_string(ctx,index) \
+ duk_safe_to_lstring((ctx), (index), NULL)
+
+/*
+ * Misc conversion
+ */
+
+DUK_EXTERNAL_DECL const char *duk_base64_encode(duk_context *ctx, duk_idx_t index);
+DUK_EXTERNAL_DECL void duk_base64_decode(duk_context *ctx, duk_idx_t index);
+DUK_EXTERNAL_DECL const char *duk_hex_encode(duk_context *ctx, duk_idx_t index);
+DUK_EXTERNAL_DECL void duk_hex_decode(duk_context *ctx, duk_idx_t index);
+DUK_EXTERNAL_DECL const char *duk_json_encode(duk_context *ctx, duk_idx_t index);
+DUK_EXTERNAL_DECL void duk_json_decode(duk_context *ctx, duk_idx_t index);
+
+/*
+ * Buffer
+ */
+
+DUK_EXTERNAL_DECL void *duk_resize_buffer(duk_context *ctx, duk_idx_t index, duk_size_t new_size);
+
+/*
+ * Property access
+ *
+ * The basic function assumes key is on stack. The _string variant takes
+ * a C string as a property name, while the _index variant takes an array
+ * index as a property name (e.g. 123 is equivalent to the key "123").
+ */
+
+DUK_EXTERNAL_DECL duk_bool_t duk_get_prop(duk_context *ctx, duk_idx_t obj_index);
+DUK_EXTERNAL_DECL duk_bool_t duk_get_prop_string(duk_context *ctx, duk_idx_t obj_index, const char *key);
+DUK_EXTERNAL_DECL duk_bool_t duk_get_prop_index(duk_context *ctx, duk_idx_t obj_index, duk_uarridx_t arr_index);
+DUK_EXTERNAL_DECL duk_bool_t duk_put_prop(duk_context *ctx, duk_idx_t obj_index);
+DUK_EXTERNAL_DECL duk_bool_t duk_put_prop_string(duk_context *ctx, duk_idx_t obj_index, const char *key);
+DUK_EXTERNAL_DECL duk_bool_t duk_put_prop_index(duk_context *ctx, duk_idx_t obj_index, duk_uarridx_t arr_index);
+DUK_EXTERNAL_DECL duk_bool_t duk_del_prop(duk_context *ctx, duk_idx_t obj_index);
+DUK_EXTERNAL_DECL duk_bool_t duk_del_prop_string(duk_context *ctx, duk_idx_t obj_index, const char *key);
+DUK_EXTERNAL_DECL duk_bool_t duk_del_prop_index(duk_context *ctx, duk_idx_t obj_index, duk_uarridx_t arr_index);
+DUK_EXTERNAL_DECL duk_bool_t duk_has_prop(duk_context *ctx, duk_idx_t obj_index);
+DUK_EXTERNAL_DECL duk_bool_t duk_has_prop_string(duk_context *ctx, duk_idx_t obj_index, const char *key);
+DUK_EXTERNAL_DECL duk_bool_t duk_has_prop_index(duk_context *ctx, duk_idx_t obj_index, duk_uarridx_t arr_index);
+DUK_EXTERNAL_DECL void duk_def_prop(duk_context *ctx, duk_idx_t obj_index, duk_uint_t flags);
+
+DUK_EXTERNAL_DECL duk_bool_t duk_get_global_string(duk_context *ctx, const char *key);
+DUK_EXTERNAL_DECL duk_bool_t duk_put_global_string(duk_context *ctx, const char *key);
+
+/*
+ * Object prototype
+ */
+
+DUK_EXTERNAL_DECL void duk_get_prototype(duk_context *ctx, duk_idx_t index);
+DUK_EXTERNAL_DECL void duk_set_prototype(duk_context *ctx, duk_idx_t index);
+
+/*
+ * Object finalizer
+ */
+
+DUK_EXTERNAL_DECL void duk_get_finalizer(duk_context *ctx, duk_idx_t index);
+DUK_EXTERNAL_DECL void duk_set_finalizer(duk_context *ctx, duk_idx_t index);
+
+/*
+ * Global object
+ */
+
+DUK_EXTERNAL_DECL void duk_set_global_object(duk_context *ctx);
+
+/*
+ * Duktape/C function magic value
+ */
+
+DUK_EXTERNAL_DECL duk_int_t duk_get_magic(duk_context *ctx, duk_idx_t index);
+DUK_EXTERNAL_DECL void duk_set_magic(duk_context *ctx, duk_idx_t index, duk_int_t magic);
+DUK_EXTERNAL_DECL duk_int_t duk_get_current_magic(duk_context *ctx);
+
+/*
+ * Module helpers: put multiple function or constant properties
+ */
+
+DUK_EXTERNAL_DECL void duk_put_function_list(duk_context *ctx, duk_idx_t obj_index, const duk_function_list_entry *funcs);
+DUK_EXTERNAL_DECL void duk_put_number_list(duk_context *ctx, duk_idx_t obj_index, const duk_number_list_entry *numbers);
+
+/*
+ * Variable access
+ */
+
+/* XXX: These calls are incomplete and not usable now. They are not (yet)
+ * part of the public API.
+ */
+DUK_EXTERNAL_DECL void duk_get_var(duk_context *ctx);
+DUK_EXTERNAL_DECL void duk_put_var(duk_context *ctx);
+DUK_EXTERNAL_DECL duk_bool_t duk_del_var(duk_context *ctx);
+DUK_EXTERNAL_DECL duk_bool_t duk_has_var(duk_context *ctx);
+
+/*
+ * Object operations
+ */
+
+DUK_EXTERNAL_DECL void duk_compact(duk_context *ctx, duk_idx_t obj_index);
+DUK_EXTERNAL_DECL void duk_enum(duk_context *ctx, duk_idx_t obj_index, duk_uint_t enum_flags);
+DUK_EXTERNAL_DECL duk_bool_t duk_next(duk_context *ctx, duk_idx_t enum_index, duk_bool_t get_value);
+
+/*
+ * String manipulation
+ */
+
+DUK_EXTERNAL_DECL void duk_concat(duk_context *ctx, duk_idx_t count);
+DUK_EXTERNAL_DECL void duk_join(duk_context *ctx, duk_idx_t count);
+DUK_EXTERNAL_DECL void duk_decode_string(duk_context *ctx, duk_idx_t index, duk_decode_char_function callback, void *udata);
+DUK_EXTERNAL_DECL void duk_map_string(duk_context *ctx, duk_idx_t index, duk_map_char_function callback, void *udata);
+DUK_EXTERNAL_DECL void duk_substring(duk_context *ctx, duk_idx_t index, duk_size_t start_char_offset, duk_size_t end_char_offset);
+DUK_EXTERNAL_DECL void duk_trim(duk_context *ctx, duk_idx_t index);
+DUK_EXTERNAL_DECL duk_codepoint_t duk_char_code_at(duk_context *ctx, duk_idx_t index, duk_size_t char_offset);
+
+/*
+ * Ecmascript operators
+ */
+
+DUK_EXTERNAL_DECL duk_bool_t duk_equals(duk_context *ctx, duk_idx_t index1, duk_idx_t index2);
+DUK_EXTERNAL_DECL duk_bool_t duk_strict_equals(duk_context *ctx, duk_idx_t index1, duk_idx_t index2);
+
+/*
+ * Function (method) calls
+ */
+
+DUK_EXTERNAL_DECL void duk_call(duk_context *ctx, duk_idx_t nargs);
+DUK_EXTERNAL_DECL void duk_call_method(duk_context *ctx, duk_idx_t nargs);
+DUK_EXTERNAL_DECL void duk_call_prop(duk_context *ctx, duk_idx_t obj_index, duk_idx_t nargs);
+DUK_EXTERNAL_DECL duk_int_t duk_pcall(duk_context *ctx, duk_idx_t nargs);
+DUK_EXTERNAL_DECL duk_int_t duk_pcall_method(duk_context *ctx, duk_idx_t nargs);
+DUK_EXTERNAL_DECL duk_int_t duk_pcall_prop(duk_context *ctx, duk_idx_t obj_index, duk_idx_t nargs);
+DUK_EXTERNAL_DECL void duk_new(duk_context *ctx, duk_idx_t nargs);
+DUK_EXTERNAL_DECL duk_int_t duk_safe_call(duk_context *ctx, duk_safe_call_function func, duk_idx_t nargs, duk_idx_t nrets);
+
+/*
+ * Thread management
+ */
+
+/* There are currently no native functions to yield/resume, due to the internal
+ * limitations on coroutine handling. These will be added later.
+ */
+
+/*
+ * Compilation and evaluation
+ */
+
+DUK_EXTERNAL_DECL duk_int_t duk_eval_raw(duk_context *ctx, const char *src_buffer, duk_size_t src_length, duk_uint_t flags);
+DUK_EXTERNAL_DECL duk_int_t duk_compile_raw(duk_context *ctx, const char *src_buffer, duk_size_t src_length, duk_uint_t flags);
+
+/* plain */
+#define duk_eval(ctx) \
+ ((void) duk_push_string((ctx), (const char *) (__FILE__)), \
+ (void) duk_eval_raw((ctx), NULL, 0, DUK_COMPILE_EVAL))
+
+#define duk_eval_noresult(ctx) \
+ ((void) duk_push_string((ctx), (const char *) (__FILE__)), \
+ (void) duk_eval_raw((ctx), NULL, 0, DUK_COMPILE_EVAL | DUK_COMPILE_NORESULT))
+
+#define duk_peval(ctx) \
+ ((void) duk_push_string((ctx), (const char *) (__FILE__)), \
+ duk_eval_raw((ctx), NULL, 0, DUK_COMPILE_EVAL | DUK_COMPILE_SAFE))
+
+#define duk_peval_noresult(ctx) \
+ ((void) duk_push_string((ctx), (const char *) (__FILE__)), \
+ duk_eval_raw((ctx), NULL, 0, DUK_COMPILE_EVAL | DUK_COMPILE_SAFE | DUK_COMPILE_NORESULT))
+
+#define duk_compile(ctx,flags) \
+ ((void) duk_compile_raw((ctx), NULL, 0, (flags)))
+
+#define duk_pcompile(ctx,flags) \
+ (duk_compile_raw((ctx), NULL, 0, (flags) | DUK_COMPILE_SAFE))
+
+/* string */
+#define duk_eval_string(ctx,src) \
+ ((void) duk_push_string((ctx), (const char *) (__FILE__)), \
+ (void) duk_eval_raw((ctx), (src), 0, DUK_COMPILE_EVAL | DUK_COMPILE_NOSOURCE | DUK_COMPILE_STRLEN))
+
+#define duk_eval_string_noresult(ctx,src) \
+ ((void) duk_push_string((ctx), (const char *) (__FILE__)), \
+ (void) duk_eval_raw((ctx), (src), 0, DUK_COMPILE_EVAL | DUK_COMPILE_NOSOURCE | DUK_COMPILE_STRLEN | DUK_COMPILE_NORESULT))
+
+#define duk_peval_string(ctx,src) \
+ ((void) duk_push_string((ctx), (const char *) (__FILE__)), \
+ duk_eval_raw((ctx), (src), 0, DUK_COMPILE_EVAL | DUK_COMPILE_SAFE | DUK_COMPILE_NOSOURCE | DUK_COMPILE_STRLEN))
+
+#define duk_peval_string_noresult(ctx,src) \
+ ((void) duk_push_string((ctx), (const char *) (__FILE__)), \
+ duk_eval_raw((ctx), (src), 0, DUK_COMPILE_EVAL | DUK_COMPILE_SAFE | DUK_COMPILE_NOSOURCE | DUK_COMPILE_STRLEN | DUK_COMPILE_NORESULT))
+
+#define duk_compile_string(ctx,flags,src) \
+ ((void) duk_push_string((ctx), (const char *) (__FILE__)), \
+ (void) duk_compile_raw((ctx), (src), 0, (flags) | DUK_COMPILE_NOSOURCE | DUK_COMPILE_STRLEN))
+
+#define duk_compile_string_filename(ctx,flags,src) \
+ ((void) duk_compile_raw((ctx), (src), 0, (flags) | DUK_COMPILE_NOSOURCE | DUK_COMPILE_STRLEN))
+
+#define duk_pcompile_string(ctx,flags,src) \
+ ((void) duk_push_string((ctx), (const char *) (__FILE__)), \
+ duk_compile_raw((ctx), (src), 0, (flags) | DUK_COMPILE_SAFE | DUK_COMPILE_NOSOURCE | DUK_COMPILE_STRLEN))
+
+#define duk_pcompile_string_filename(ctx,flags,src) \
+ (duk_compile_raw((ctx), (src), 0, (flags) | DUK_COMPILE_SAFE | DUK_COMPILE_NOSOURCE | DUK_COMPILE_STRLEN))
+
+/* lstring */
+#define duk_eval_lstring(ctx,buf,len) \
+ ((void) duk_push_string((ctx), (const char *) (__FILE__)), \
+ (void) duk_eval_raw((ctx), buf, len, DUK_COMPILE_EVAL | DUK_COMPILE_NOSOURCE))
+
+#define duk_eval_lstring_noresult(ctx,buf,len) \
+ ((void) duk_push_string((ctx), (const char *) (__FILE__)), \
+ (void) duk_eval_raw((ctx), buf, len, DUK_COMPILE_EVAL | DUK_COMPILE_NOSOURCE | DUK_COMPILE_NORESULT))
+
+#define duk_peval_lstring(ctx,buf,len) \
+ ((void) duk_push_string((ctx), (const char *) (__FILE__)), \
+ duk_eval_raw((ctx), buf, len, DUK_COMPILE_EVAL | DUK_COMPILE_NOSOURCE | DUK_COMPILE_SAFE))
+
+#define duk_peval_lstring_noresult(ctx,buf,len) \
+ ((void) duk_push_string((ctx), (const char *) (__FILE__)), \
+ duk_eval_raw((ctx), buf, len, DUK_COMPILE_EVAL | DUK_COMPILE_SAFE | DUK_COMPILE_NOSOURCE | DUK_COMPILE_NORESULT))
+
+#define duk_compile_lstring(ctx,flags,buf,len) \
+ ((void) duk_push_string((ctx), (const char *) (__FILE__)), \
+ (void) duk_compile_raw((ctx), buf, len, (flags) | DUK_COMPILE_NOSOURCE))
+
+#define duk_compile_lstring_filename(ctx,flags,buf,len) \
+ ((void) duk_compile_raw((ctx), buf, len, (flags) | DUK_COMPILE_NOSOURCE))
+
+#define duk_pcompile_lstring(ctx,flags,buf,len) \
+ ((void) duk_push_string((ctx), (const char *) (__FILE__)), \
+ duk_compile_raw((ctx), buf, len, (flags) | DUK_COMPILE_SAFE | DUK_COMPILE_NOSOURCE))
+
+#define duk_pcompile_lstring_filename(ctx,flags,buf,len) \
+ (duk_compile_raw((ctx), buf, len, (flags) | DUK_COMPILE_SAFE | DUK_COMPILE_NOSOURCE))
+
+/* file */
+#define duk_eval_file(ctx,path) \
+ ((void) duk_push_string_file_raw((ctx), (path), 0), \
+ (void) duk_push_string((ctx), (path)), \
+ (void) duk_eval_raw((ctx), NULL, 0, DUK_COMPILE_EVAL))
+
+#define duk_eval_file_noresult(ctx,path) \
+ ((void) duk_push_string_file_raw((ctx), (path), 0), \
+ (void) duk_push_string((ctx), (path)), \
+ (void) duk_eval_raw((ctx), NULL, 0, DUK_COMPILE_EVAL | DUK_COMPILE_NORESULT))
+
+#define duk_peval_file(ctx,path) \
+ ((void) duk_push_string_file_raw((ctx), (path), DUK_STRING_PUSH_SAFE), \
+ (void) duk_push_string((ctx), (path)), \
+ duk_eval_raw((ctx), NULL, 0, DUK_COMPILE_EVAL | DUK_COMPILE_SAFE))
+
+#define duk_peval_file_noresult(ctx,path) \
+ ((void) duk_push_string_file_raw((ctx), (path), DUK_STRING_PUSH_SAFE), \
+ (void) duk_push_string((ctx), (path)), \
+ duk_eval_raw((ctx), NULL, 0, DUK_COMPILE_EVAL | DUK_COMPILE_SAFE | DUK_COMPILE_NORESULT))
+
+#define duk_compile_file(ctx,flags,path) \
+ ((void) duk_push_string_file_raw((ctx), (path), 0), \
+ (void) duk_push_string((ctx), (path)), \
+ (void) duk_compile_raw((ctx), NULL, 0, (flags)))
+
+#define duk_pcompile_file(ctx,flags,path) \
+ ((void) duk_push_string_file_raw((ctx), (path), DUK_STRING_PUSH_SAFE), \
+ (void) duk_push_string((ctx), (path)), \
+ duk_compile_raw((ctx), NULL, 0, (flags) | DUK_COMPILE_SAFE))
+
+/*
+ * Logging
+ */
+
+DUK_EXTERNAL_DECL void duk_log(duk_context *ctx, duk_int_t level, const char *fmt, ...);
+DUK_EXTERNAL_DECL void duk_log_va(duk_context *ctx, duk_int_t level, const char *fmt, va_list ap);
+
+/*
+ * Debugging
+ */
+
+DUK_EXTERNAL_DECL void duk_push_context_dump(duk_context *ctx);
+
+#if defined(DUK_USE_FILE_IO)
+/* internal use */
+#define duk_dump_context_filehandle(ctx,fh) \
+ (duk_push_context_dump((ctx)), \
+ DUK_FPRINTF((fh), "%s\n", duk_safe_to_string(ctx, -1)), \
+ duk_pop(ctx))
+
+/* external use */
+#define duk_dump_context_stdout(ctx) \
+ duk_dump_context_filehandle((ctx), DUK_STDOUT)
+#define duk_dump_context_stderr(ctx) \
+ duk_dump_context_filehandle((ctx), DUK_STDERR)
+#else /* DUK_USE_FILE_IO */
+#define duk_dump_context_stdout(ctx) ((void) 0)
+#define duk_dump_context_stderr(ctx) ((void) 0)
+#endif /* DUK_USE_FILE_IO */
+
+/*
+ * Debugger (debug protocol)
+ */
+
+DUK_EXTERNAL_DECL void duk_debugger_attach(duk_context *ctx,
+ duk_debug_read_function read_cb,
+ duk_debug_write_function write_cb,
+ duk_debug_peek_function peek_cb,
+ duk_debug_read_flush_function read_flush_cb,
+ duk_debug_write_flush_function write_flush_cb,
+ duk_debug_detached_function detached_cb,
+ void *udata);
+DUK_EXTERNAL_DECL void duk_debugger_detach(duk_context *ctx);
+DUK_EXTERNAL_DECL void duk_debugger_cooperate(duk_context *ctx);
+
+/*
+ * C++ name mangling
+ */
+
+#ifdef __cplusplus
+/* end 'extern "C"' wrapper */
+}
+#endif
+
+#endif /* DUK_API_PUBLIC_H_INCLUDED */
+
+/*
+ * END PUBLIC API
+ */
+
+/*
+ * Sanity check for the final effective internal defines. This file also
+ * double checks user tweaks made by an optional duk_custom.h header.
+ */
+
+#ifndef DUK_FEATURES_SANITY_H_INCLUDED
+#define DUK_FEATURES_SANITY_H_INCLUDED
+
+/*
+ * 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_FEATURES_SANITY_H_INCLUDED */
+
+/*
+ * Union to access IEEE double memory representation, indexes for double
+ * memory representation, and some macros for double manipulation.
+ *
+ * Also used by packed duk_tval. Use a union for bit manipulation to
+ * minimize aliasing issues in practice. The C99 standard does not
+ * guarantee that this should work, but it's a very widely supported
+ * practice for low level manipulation.
+ *
+ * IEEE double format summary:
+ *
+ * seeeeeee eeeeffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff
+ * A B C D E F G H
+ *
+ * s sign bit
+ * eee... exponent field
+ * fff... fraction
+ *
+ * See http://en.wikipedia.org/wiki/Double_precision_floating-point_format.
+ *
+ * NaNs are represented as exponent 0x7ff and mantissa != 0. The NaN is a
+ * signaling NaN when the highest bit of the mantissa is zero, and a quiet
+ * NaN when the highest bit is set.
+ *
+ * At least three memory layouts are relevant here:
+ *
+ * A B C D E F G H Big endian (e.g. 68k) DUK_USE_DOUBLE_BE
+ * H G F E D C B A Little endian (e.g. x86) DUK_USE_DOUBLE_LE
+ * D C B A H G F E Mixed/cross endian (e.g. ARM) DUK_USE_DOUBLE_ME
+ *
+ * ARM is a special case: ARM double values are in mixed/cross endian
+ * format while ARM duk_uint64_t values are in standard little endian
+ * format (H G F E D C B A). When a double is read as a duk_uint64_t
+ * from memory, the register will contain the (logical) value
+ * E F G H A B C D. This requires some special handling below.
+ *
+ * Indexes of various types (8-bit, 16-bit, 32-bit) in memory relative to
+ * the logical (big endian) order:
+ *
+ * byte order duk_uint8_t duk_uint16_t duk_uint32_t
+ * BE 01234567 0123 01
+ * LE 76543210 3210 10
+ * ME (ARM) 32107654 1032 01
+ *
+ * Some processors may alter NaN values in a floating point load+store.
+ * For instance, on X86 a FLD + FSTP may convert a signaling NaN to a
+ * quiet one. This is catastrophic when NaN space is used in packed
+ * duk_tval values. See: misc/clang_aliasing.c.
+ */
+
+#ifndef DUK_DBLUNION_H_INCLUDED
+#define DUK_DBLUNION_H_INCLUDED
+
+/*
+ * Union for accessing double parts, also serves as packed duk_tval
+ */
+
+union duk_double_union {
+ double d;
+#ifdef DUK_USE_64BIT_OPS
+ duk_uint64_t ull[1];
+#endif
+ duk_uint32_t ui[2];
+ duk_uint16_t us[4];
+ duk_uint8_t uc[8];
+#ifdef DUK_USE_PACKED_TVAL_POSSIBLE
+ void *vp[2]; /* used by packed duk_tval, assumes sizeof(void *) == 4 */
+#endif
+};
+
+typedef union duk_double_union duk_double_union;
+
+/*
+ * Indexes of various types with respect to big endian (logical) layout
+ */
+
+#if defined(DUK_USE_DOUBLE_LE)
+#ifdef DUK_USE_64BIT_OPS
+#define DUK_DBL_IDX_ULL0 0
+#endif
+#define DUK_DBL_IDX_UI0 1
+#define DUK_DBL_IDX_UI1 0
+#define DUK_DBL_IDX_US0 3
+#define DUK_DBL_IDX_US1 2
+#define DUK_DBL_IDX_US2 1
+#define DUK_DBL_IDX_US3 0
+#define DUK_DBL_IDX_UC0 7
+#define DUK_DBL_IDX_UC1 6
+#define DUK_DBL_IDX_UC2 5
+#define DUK_DBL_IDX_UC3 4
+#define DUK_DBL_IDX_UC4 3
+#define DUK_DBL_IDX_UC5 2
+#define DUK_DBL_IDX_UC6 1
+#define DUK_DBL_IDX_UC7 0
+#define DUK_DBL_IDX_VP0 DUK_DBL_IDX_UI0 /* packed tval */
+#define DUK_DBL_IDX_VP1 DUK_DBL_IDX_UI1 /* packed tval */
+#elif defined(DUK_USE_DOUBLE_BE)
+#ifdef DUK_USE_64BIT_OPS
+#define DUK_DBL_IDX_ULL0 0
+#endif
+#define DUK_DBL_IDX_UI0 0
+#define DUK_DBL_IDX_UI1 1
+#define DUK_DBL_IDX_US0 0
+#define DUK_DBL_IDX_US1 1
+#define DUK_DBL_IDX_US2 2
+#define DUK_DBL_IDX_US3 3
+#define DUK_DBL_IDX_UC0 0
+#define DUK_DBL_IDX_UC1 1
+#define DUK_DBL_IDX_UC2 2
+#define DUK_DBL_IDX_UC3 3
+#define DUK_DBL_IDX_UC4 4
+#define DUK_DBL_IDX_UC5 5
+#define DUK_DBL_IDX_UC6 6
+#define DUK_DBL_IDX_UC7 7
+#define DUK_DBL_IDX_VP0 DUK_DBL_IDX_UI0 /* packed tval */
+#define DUK_DBL_IDX_VP1 DUK_DBL_IDX_UI1 /* packed tval */
+#elif defined(DUK_USE_DOUBLE_ME)
+#ifdef DUK_USE_64BIT_OPS
+#define DUK_DBL_IDX_ULL0 0 /* not directly applicable, byte order differs from a double */
+#endif
+#define DUK_DBL_IDX_UI0 0
+#define DUK_DBL_IDX_UI1 1
+#define DUK_DBL_IDX_US0 1
+#define DUK_DBL_IDX_US1 0
+#define DUK_DBL_IDX_US2 3
+#define DUK_DBL_IDX_US3 2
+#define DUK_DBL_IDX_UC0 3
+#define DUK_DBL_IDX_UC1 2
+#define DUK_DBL_IDX_UC2 1
+#define DUK_DBL_IDX_UC3 0
+#define DUK_DBL_IDX_UC4 7
+#define DUK_DBL_IDX_UC5 6
+#define DUK_DBL_IDX_UC6 5
+#define DUK_DBL_IDX_UC7 4
+#define DUK_DBL_IDX_VP0 DUK_DBL_IDX_UI0 /* packed tval */
+#define DUK_DBL_IDX_VP1 DUK_DBL_IDX_UI1 /* packed tval */
+#else
+#error internal error
+#endif
+
+/*
+ * Helper macros for reading/writing memory representation parts, used
+ * by duk_numconv.c and duk_tval.h.
+ */
+
+#define DUK_DBLUNION_SET_DOUBLE(u,v) do { \
+ (u)->d = (v); \
+ } while (0)
+
+#define DUK_DBLUNION_SET_HIGH32(u,v) do { \
+ (u)->ui[DUK_DBL_IDX_UI0] = (duk_uint32_t) (v); \
+ } while (0)
+
+#ifdef DUK_USE_64BIT_OPS
+#ifdef DUK_USE_DOUBLE_ME
+#define DUK_DBLUNION_SET_HIGH32_ZERO_LOW32(u,v) do { \
+ (u)->ull[DUK_DBL_IDX_ULL0] = (duk_uint64_t) (v); \
+ } while (0)
+#else
+#define DUK_DBLUNION_SET_HIGH32_ZERO_LOW32(u,v) do { \
+ (u)->ull[DUK_DBL_IDX_ULL0] = ((duk_uint64_t) (v)) << 32; \
+ } while (0)
+#endif
+#else /* DUK_USE_64BIT_OPS */
+#define DUK_DBLUNION_SET_HIGH32_ZERO_LOW32(u,v) do { \
+ (u)->ui[DUK_DBL_IDX_UI0] = (duk_uint32_t) (v); \
+ (u)->ui[DUK_DBL_IDX_UI1] = (duk_uint32_t) 0; \
+ } while (0)
+#endif /* DUK_USE_64BIT_OPS */
+
+#define DUK_DBLUNION_SET_LOW32(u,v) do { \
+ (u)->ui[DUK_DBL_IDX_UI1] = (duk_uint32_t) (v); \
+ } while (0)
+
+#define DUK_DBLUNION_GET_DOUBLE(u) ((u)->d)
+#define DUK_DBLUNION_GET_HIGH32(u) ((u)->ui[DUK_DBL_IDX_UI0])
+#define DUK_DBLUNION_GET_LOW32(u) ((u)->ui[DUK_DBL_IDX_UI1])
+
+#ifdef DUK_USE_64BIT_OPS
+#ifdef DUK_USE_DOUBLE_ME
+#define DUK_DBLUNION_SET_UINT64(u,v) do { \
+ (u)->ui[DUK_DBL_IDX_UI0] = (duk_uint32_t) ((v) >> 32); \
+ (u)->ui[DUK_DBL_IDX_UI1] = (duk_uint32_t) (v); \
+ } while (0)
+#define DUK_DBLUNION_GET_UINT64(u) \
+ ((((duk_uint64_t) (u)->ui[DUK_DBL_IDX_UI0]) << 32) | \
+ ((duk_uint64_t) (u)->ui[DUK_DBL_IDX_UI1]))
+#else
+#define DUK_DBLUNION_SET_UINT64(u,v) do { \
+ (u)->ull[DUK_DBL_IDX_ULL0] = (duk_uint64_t) (v); \
+ } while (0)
+#define DUK_DBLUNION_GET_UINT64(u) ((u)->ull[DUK_DBL_IDX_ULL0])
+#endif
+#define DUK_DBLUNION_SET_INT64(u,v) DUK_DBLUNION_SET_UINT64((u), (duk_uint64_t) (v))
+#define DUK_DBLUNION_GET_INT64(u) ((duk_int64_t) DUK_DBLUNION_GET_UINT64((u)))
+#endif /* DUK_USE_64BIT_OPS */
+
+/*
+ * Double NaN manipulation macros related to NaN normalization needed when
+ * using the packed duk_tval representation. NaN normalization is necessary
+ * to keep double values compatible with the duk_tval format.
+ *
+ * When packed duk_tval is used, the NaN space is used to store pointers
+ * and other tagged values in addition to NaNs. Actual NaNs are normalized
+ * to a specific format. The macros below are used by the implementation
+ * to check and normalize NaN values when they might be created. The macros
+ * are essentially NOPs when the non-packed duk_tval representation is used.
+ *
+ * A FULL check is exact and checks all bits. A NOTFULL check is used by
+ * the packed duk_tval and works correctly for all NaNs except those that
+ * begin with 0x7ff0. Since the 'normalized NaN' values used with packed
+ * duk_tval begin with 0x7ff8, the partial check is reliable when packed
+ * duk_tval is used.
+ *
+ * The ME variant below is specifically for ARM byte order, which has the
+ * feature that while doubles have a mixed byte order (32107654), unsigned
+ * long long values has a little endian byte order (76543210). When writing
+ * a logical double value through a ULL pointer, the 32-bit words need to be
+ * swapped; hence the #ifdefs below for ULL writes with DUK_USE_DOUBLE_ME.
+ * This is not full ARM support but suffices for some environments.
+ */
+
+#ifdef DUK_USE_64BIT_OPS
+#ifdef DUK_USE_DOUBLE_ME
+#define DUK__DBLUNION_SET_NAN_FULL(u) do { \
+ (u)->ull[DUK_DBL_IDX_ULL0] = 0x000000007ff80000ULL; \
+ } while (0)
+#else
+#define DUK__DBLUNION_SET_NAN_FULL(u) do { \
+ (u)->ull[DUK_DBL_IDX_ULL0] = 0x7ff8000000000000ULL; \
+ } while (0)
+#endif
+#else /* DUK_USE_64BIT_OPS */
+#define DUK__DBLUNION_SET_NAN_FULL(u) do { \
+ (u)->ui[DUK_DBL_IDX_UI0] = (duk_uint32_t) 0x7ff80000UL; \
+ (u)->ui[DUK_DBL_IDX_UI1] = (duk_uint32_t) 0x00000000UL; \
+ } while (0)
+#endif /* DUK_USE_64BIT_OPS */
+
+#define DUK__DBLUNION_SET_NAN_NOTFULL(u) do { \
+ (u)->us[DUK_DBL_IDX_US0] = 0x7ff8UL; \
+ } while (0)
+
+#ifdef DUK_USE_64BIT_OPS
+#ifdef DUK_USE_DOUBLE_ME
+#define DUK__DBLUNION_IS_NAN_FULL(u) \
+ /* E == 0x7ff, F != 0 => NaN */ \
+ ((((u)->us[DUK_DBL_IDX_US0] & 0x7ff0UL) == 0x7ff0UL) && \
+ ((((u)->ull[DUK_DBL_IDX_ULL0]) & 0xffffffff000fffffULL) != 0))
+#else
+#define DUK__DBLUNION_IS_NAN_FULL(u) \
+ /* E == 0x7ff, F != 0 => NaN */ \
+ ((((u)->us[DUK_DBL_IDX_US0] & 0x7ff0UL) == 0x7ff0UL) && \
+ ((((u)->ull[DUK_DBL_IDX_ULL0]) & 0x000fffffffffffffULL) != 0))
+#endif
+#else /* DUK_USE_64BIT_OPS */
+#define DUK__DBLUNION_IS_NAN_FULL(u) \
+ /* E == 0x7ff, F != 0 => NaN */ \
+ ((((u)->ui[DUK_DBL_IDX_UI0] & 0x7ff00000UL) == 0x7ff00000UL) && \
+ (((u)->ui[DUK_DBL_IDX_UI0] & 0x000fffffUL) != 0 || \
+ (u)->ui[DUK_DBL_IDX_UI1] != 0))
+#endif /* DUK_USE_64BIT_OPS */
+
+#define DUK__DBLUNION_IS_NAN_NOTFULL(u) \
+ /* E == 0x7ff, topmost four bits of F != 0 => assume NaN */ \
+ ((((u)->us[DUK_DBL_IDX_US0] & 0x7ff0UL) == 0x7ff0UL) && \
+ (((u)->us[DUK_DBL_IDX_US0] & 0x000fUL) != 0x0000UL))
+
+#ifdef DUK_USE_64BIT_OPS
+#ifdef DUK_USE_DOUBLE_ME
+#define DUK__DBLUNION_IS_NORMALIZED_NAN_FULL(u) \
+ ((u)->ull[DUK_DBL_IDX_ULL0] == 0x000000007ff80000ULL)
+#else
+#define DUK__DBLUNION_IS_NORMALIZED_NAN_FULL(u) \
+ ((u)->ull[DUK_DBL_IDX_ULL0] == 0x7ff8000000000000ULL)
+#endif
+#else /* DUK_USE_64BIT_OPS */
+#define DUK__DBLUNION_IS_NORMALIZED_NAN_FULL(u) \
+ (((u)->ui[DUK_DBL_IDX_UI0] == 0x7ff80000UL) && \
+ ((u)->ui[DUK_DBL_IDX_UI1] == 0x00000000UL))
+#endif /* DUK_USE_64BIT_OPS */
+
+#define DUK__DBLUNION_IS_NORMALIZED_NAN_NOTFULL(u) \
+ /* E == 0x7ff, F == 8 => normalized NaN */ \
+ ((u)->us[DUK_DBL_IDX_US0] == 0x7ff8UL)
+
+#define DUK__DBLUNION_NORMALIZE_NAN_CHECK_FULL(u) do { \
+ if (DUK__DBLUNION_IS_NAN_FULL((u))) { \
+ DUK__DBLUNION_SET_NAN_FULL((u)); \
+ } \
+ } while (0)
+
+#define DUK__DBLUNION_NORMALIZE_NAN_CHECK_NOTFULL(u) do { \
+ if (DUK__DBLUNION_IS_NAN_NOTFULL((u))) { \
+ DUK__DBLUNION_SET_NAN_NOTFULL((u)); \
+ } \
+ } while (0)
+
+/* Concrete macros for NaN handling used by the implementation internals.
+ * Chosen so that they match the duk_tval representation: with a packed
+ * duk_tval, ensure NaNs are properly normalized; with a non-packed duk_tval
+ * these are essentially NOPs.
+ */
+
+#if defined(DUK_USE_PACKED_TVAL)
+#if defined(DUK_USE_FULL_TVAL)
+#define DUK_DBLUNION_NORMALIZE_NAN_CHECK(u) DUK__DBLUNION_NORMALIZE_NAN_CHECK_FULL((u))
+#define DUK_DBLUNION_IS_NAN(u) DUK__DBLUNION_IS_NAN_FULL((u))
+#define DUK_DBLUNION_IS_NORMALIZED_NAN(u) DUK__DBLUNION_IS_NORMALIZED_NAN_FULL((u))
+#define DUK_DBLUNION_SET_NAN(d) DUK__DBLUNION_SET_NAN_FULL((d))
+#else
+#define DUK_DBLUNION_NORMALIZE_NAN_CHECK(u) DUK__DBLUNION_NORMALIZE_NAN_CHECK_NOTFULL((u))
+#define DUK_DBLUNION_IS_NAN(u) DUK__DBLUNION_IS_NAN_NOTFULL((u))
+#define DUK_DBLUNION_IS_NORMALIZED_NAN(u) DUK__DBLUNION_IS_NORMALIZED_NAN_NOTFULL((u))
+#define DUK_DBLUNION_SET_NAN(d) DUK__DBLUNION_SET_NAN_NOTFULL((d))
+#endif
+#define DUK_DBLUNION_IS_NORMALIZED(u) \
+ (!DUK_DBLUNION_IS_NAN((u)) || /* either not a NaN */ \
+ DUK_DBLUNION_IS_NORMALIZED_NAN((u))) /* or is a normalized NaN */
+#else /* DUK_USE_PACKED_TVAL */
+#define DUK_DBLUNION_NORMALIZE_NAN_CHECK(u) /* nop: no need to normalize */
+#define DUK_DBLUNION_IS_NAN(u) (DUK_ISNAN((u)->d))
+#define DUK_DBLUNION_IS_NORMALIZED_NAN(u) (DUK_ISNAN((u)->d))
+#define DUK_DBLUNION_IS_NORMALIZED(u) 1 /* all doubles are considered normalized */
+#define DUK_DBLUNION_SET_NAN(u) do { \
+ /* in non-packed representation we don't care about which NaN is used */ \
+ (u)->d = DUK_DOUBLE_NAN; \
+ } while (0)
+#endif /* DUK_USE_PACKED_TVAL */
+
+/* Byteswap an (aligned) duk_double_union. */
+#if defined(DUK_USE_DOUBLE_LE)
+#define DUK_DBLUNION_BSWAP(u) do { \
+ duk_uint32_t duk__bswaptmp1, duk__bswaptmp2; \
+ duk__bswaptmp1 = (u)->ui[0]; \
+ duk__bswaptmp2 = (u)->ui[1]; \
+ duk__bswaptmp1 = DUK_BSWAP32(duk__bswaptmp1); \
+ duk__bswaptmp2 = DUK_BSWAP32(duk__bswaptmp2); \
+ (u)->ui[0] = duk__bswaptmp2; \
+ (u)->ui[1] = duk__bswaptmp1; \
+ } while (0)
+#elif defined(DUK_USE_DOUBLE_ME)
+#define DUK_DBLUNION_BSWAP(u) do { \
+ duk_uint32_t duk__bswaptmp1, duk__bswaptmp2; \
+ duk__bswaptmp1 = (u)->ui[0]; \
+ duk__bswaptmp2 = (u)->ui[1]; \
+ duk__bswaptmp1 = DUK_BSWAP32(duk__bswaptmp1); \
+ duk__bswaptmp2 = DUK_BSWAP32(duk__bswaptmp2); \
+ (u)->ui[0] = duk__bswaptmp1; \
+ (u)->ui[1] = duk__bswaptmp2; \
+ } while (0)
+#elif defined(DUK_USE_DOUBLE_BE)
+#define DUK_DBLUNION_BSWAP(u) do { } while (0)
+#else
+#error internal error, double endianness insane
+#endif
+
+#endif /* DUK_DBLUNION_H_INCLUDED */
+
+#endif /* DUKTAPE_H_INCLUDED */