src/hb.hh - third_party/harfbuzz - Git at Google

 /*
  * Copyright © 2007,2008,2009  Red Hat, Inc.
  * Copyright © 2011,2012  Google, Inc.
  *
  *  This is part of HarfBuzz, a text shaping library.
  *
  * Permission is hereby granted, without written agreement and without
  * license or royalty fees, to use, copy, modify, and distribute this
  * software and its documentation for any purpose, provided that the
  * above copyright notice and the following two paragraphs appear in
  * all copies of this software.
  *
  * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
  * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
  * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
  * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
  * DAMAGE.
  *
  * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
  * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
  * FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
  * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
  * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
  *
  * Red Hat Author(s): Behdad Esfahbod
  * Google Author(s): Behdad Esfahbod
  */

 #ifndef HB_HH
 #define HB_HH


 #ifndef HB_NO_PRAGMA_GCC_DIAGNOSTIC
 #ifdef _MSC_VER
 #pragma warning( disable: 4068 ) /* Unknown pragma */
 #endif
 #if defined(__GNUC__) || defined(__clang__)
 /* Rules:
  *
  * - All pragmas are declared GCC even if they are clang ones.  Otherwise GCC
  *   nags, even though we instruct it to ignore -Wunknown-pragmas. ¯\_(ツ)_/¯
  *
  * - Within each category, keep sorted.
  *
  * - Warnings whose scope can be expanded in future compiler versions shall
  *   be declared as "warning".  Otherwise, either ignored or error.
  */

 /* Setup.  Don't sort order within this category. */
 #ifndef HB_NO_PRAGMA_GCC_DIAGNOSTIC_WARNING
 #pragma GCC diagnostic warning "-Wall"
 #pragma GCC diagnostic warning "-Wextra"
 #endif
 #ifndef HB_NO_PRAGMA_GCC_DIAGNOSTIC_IGNORED
 #pragma GCC diagnostic ignored "-Wpragmas"
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"
 #pragma GCC diagnostic ignored "-Wunknown-warning-option"
 #endif
 #ifndef HB_NO_PRAGMA_GCC_DIAGNOSTIC_WARNING
 //#pragma GCC diagnostic warning "-Weverything"
 #endif

 /* Error.  Should never happen. */
 #ifndef HB_NO_PRAGMA_GCC_DIAGNOSTIC_ERROR
 #pragma GCC diagnostic error   "-Wbitwise-instead-of-logical"
 #pragma GCC diagnostic error   "-Wcast-align"
 #pragma GCC diagnostic error   "-Wcast-function-type"
 #pragma GCC diagnostic error   "-Wdelete-non-virtual-dtor"
 #pragma GCC diagnostic error   "-Wembedded-directive"
 #pragma GCC diagnostic error   "-Wextra-semi-stmt"
 #pragma GCC diagnostic error   "-Wformat-security"
 #pragma GCC diagnostic error   "-Wimplicit-function-declaration"
 #pragma GCC diagnostic error   "-Winit-self"
 #pragma GCC diagnostic error   "-Winjected-class-name"
 #pragma GCC diagnostic error   "-Wmissing-braces"
 #pragma GCC diagnostic error   "-Wmissing-declarations"
 #pragma GCC diagnostic error   "-Wmissing-prototypes"
 #pragma GCC diagnostic error   "-Wnarrowing"
 #pragma GCC diagnostic error   "-Wnested-externs"
 #pragma GCC diagnostic error   "-Wold-style-definition"
 #pragma GCC diagnostic error   "-Wpointer-arith"
 #pragma GCC diagnostic error   "-Wredundant-decls"
 #pragma GCC diagnostic error   "-Wreorder"
 #pragma GCC diagnostic error   "-Wsign-compare"
 #pragma GCC diagnostic error   "-Wstrict-prototypes"
 #pragma GCC diagnostic error   "-Wstring-conversion"
 #pragma GCC diagnostic error   "-Wswitch-enum"
 #pragma GCC diagnostic error   "-Wtautological-overlap-compare"
 #pragma GCC diagnostic error   "-Wunneeded-internal-declaration"
 #pragma GCC diagnostic error   "-Wunused"
 #pragma GCC diagnostic error   "-Wunused-local-typedefs"
 #pragma GCC diagnostic error   "-Wunused-value"
 #pragma GCC diagnostic error   "-Wunused-variable"
 #pragma GCC diagnostic error   "-Wvla"
 #pragma GCC diagnostic error   "-Wwrite-strings"
 #endif

 /* Warning.  To be investigated if happens. */
 #ifndef HB_NO_PRAGMA_GCC_DIAGNOSTIC_WARNING
 #pragma GCC diagnostic warning "-Wbuiltin-macro-redefined"
 #pragma GCC diagnostic warning "-Wdeprecated"
 #pragma GCC diagnostic warning "-Wdeprecated-declarations"
 #pragma GCC diagnostic warning "-Wdisabled-optimization"
 #pragma GCC diagnostic warning "-Wdouble-promotion"
 #pragma GCC diagnostic warning "-Wformat=2"
 #pragma GCC diagnostic warning "-Wignored-pragma-optimize"
 #pragma GCC diagnostic warning "-Wlogical-op"
 #pragma GCC diagnostic warning "-Wmaybe-uninitialized"
 #pragma GCC diagnostic warning "-Wmissing-format-attribute"
 #pragma GCC diagnostic warning "-Wundef"
 #pragma GCC diagnostic warning "-Wunused-but-set-variable"
 #endif

 /* Ignored currently, but should be fixed at some point. */
 #ifndef HB_NO_PRAGMA_GCC_DIAGNOSTIC_IGNORED
 #pragma GCC diagnostic ignored "-Wconversion"			// TODO fix
 #pragma GCC diagnostic ignored "-Wformat-signedness"		// TODO fix
 #pragma GCC diagnostic ignored "-Wshadow"			// TODO fix
 #pragma GCC diagnostic ignored "-Wunsafe-loop-optimizations"	// TODO fix
 #pragma GCC diagnostic ignored "-Wunused-parameter"		// TODO fix
 #if defined(__GNUC__) && !defined(__clang__)
 #pragma GCC diagnostic ignored "-Wunused-result"		// TODO fix
 #endif
 #endif

 /* Ignored intentionally. */
 #ifndef HB_NO_PRAGMA_GCC_DIAGNOSTIC_IGNORED
 #pragma GCC diagnostic ignored "-Wclass-memaccess"
 #pragma GCC diagnostic ignored "-Wformat-nonliteral"
 #pragma GCC diagnostic ignored "-Wformat-zero-length"
 #pragma GCC diagnostic ignored "-Wmissing-field-initializers"
 #pragma GCC diagnostic ignored "-Wpacked" // Erratic impl in clang
 #pragma GCC diagnostic ignored "-Wrange-loop-analysis" // https://github.com/harfbuzz/harfbuzz/issues/2834
 #pragma GCC diagnostic ignored "-Wstrict-aliasing"
 #pragma GCC diagnostic ignored "-Wtype-limits"
 #pragma GCC diagnostic ignored "-Wc++11-compat" // only gcc raises it
 #endif

 #endif
 #endif


 #include "hb-config.hh"


 /*
  * Following added based on what AC_USE_SYSTEM_EXTENSIONS adds to
  * config.h.in.  Copied here for the convenience of those embedding
  * HarfBuzz and not using our build system.
  */
 /* Enable extensions on AIX 3, Interix.  */
 #ifndef _ALL_SOURCE
 # define _ALL_SOURCE 1
 #endif
 /* Enable GNU extensions on systems that have them.  */
 #ifndef _GNU_SOURCE
 # define _GNU_SOURCE 1
 #endif
 /* Enable threading extensions on Solaris.  */
 #ifndef _POSIX_PTHREAD_SEMANTICS
 # define _POSIX_PTHREAD_SEMANTICS 1
 #endif
 /* Enable extensions on HP NonStop.  */
 #ifndef _TANDEM_SOURCE
 # define _TANDEM_SOURCE 1
 #endif
 /* Enable general extensions on Solaris.  */
 #ifndef __EXTENSIONS__
 # define __EXTENSIONS__ 1
 #endif

 #if defined (_MSC_VER) && defined (HB_DLL_EXPORT)
 #define HB_EXTERN __declspec (dllexport) extern
 #endif

 #include "hb.h"
 #define HB_H_IN
 #include "hb-ot.h"
 #define HB_OT_H_IN
 #include "hb-aat.h"
 #define HB_AAT_H_IN

 #include <cassert>
 #include <cfloat>
 #include <climits>
 #ifdef _MSC_VER
 # define _USE_MATH_DEFINES
 #endif
 #include <cmath>
 #include <cstdarg>
 #include <cstddef>
 #include <cstdio>
 #include <cstdlib>
 #include <cstring>

 #if (defined(_MSC_VER) && _MSC_VER >= 1500) || defined(__MINGW32__)
 #ifdef __MINGW32_VERSION
 #ifndef WIN32_LEAN_AND_MEAN
 #define WIN32_LEAN_AND_MEAN 1
 #endif
 #else
 #include <intrin.h>
 #endif
 #endif

 #ifdef _WIN32
 #include <windows.h>
 #include <winapifamily.h>
 #endif

 #define HB_PASTE1(a,b) a##b
 #define HB_PASTE(a,b) HB_PASTE1(a,b)


 /* Compile-time custom allocator support. */

 #if !defined(HB_CUSTOM_MALLOC) \
   && defined(hb_malloc_impl) \
   && defined(hb_calloc_impl) \
   && defined(hb_realloc_impl) \
   && defined(hb_free_impl)
 #define HB_CUSTOM_MALLOC
 #endif

 #ifdef HB_CUSTOM_MALLOC
 extern "C" void* hb_malloc_impl(size_t size);
 extern "C" void* hb_calloc_impl(size_t nmemb, size_t size);
 extern "C" void* hb_realloc_impl(void *ptr, size_t size);
 extern "C" void  hb_free_impl(void *ptr);
 #define hb_malloc hb_malloc_impl
 #define hb_calloc hb_calloc_impl
 #define hb_realloc hb_realloc_impl
 #define hb_free hb_free_impl
 #else
 #define hb_malloc malloc
 #define hb_calloc calloc
 #define hb_realloc realloc
 #define hb_free free
 #endif


 /*
  * Compiler attributes
  */

 #if (defined(__GNUC__) || defined(__clang__)) && defined(__OPTIMIZE__)
 #define likely(expr) (__builtin_expect (!!(expr), 1))
 #define unlikely(expr) (__builtin_expect (!!(expr), 0))
 #else
 #define likely(expr) (expr)
 #define unlikely(expr) (expr)
 #endif

 #if !defined(__GNUC__) && !defined(__clang__)
 #undef __attribute__
 #define __attribute__(x)
 #endif

 #if defined(__GNUC__) && (__GNUC__ >= 3)
 #define HB_PRINTF_FUNC(format_idx, arg_idx) __attribute__((__format__ (__printf__, format_idx, arg_idx)))
 #else
 #define HB_PRINTF_FUNC(format_idx, arg_idx)
 #endif
 #if defined(__GNUC__) && (__GNUC__ >= 4) || (__clang__)
 #define HB_UNUSED	__attribute__((unused))
 #elif defined(_MSC_VER) /* https://github.com/harfbuzz/harfbuzz/issues/635 */
 #define HB_UNUSED __pragma(warning(suppress: 4100 4101))
 #else
 #define HB_UNUSED
 #endif

 #ifndef HB_INTERNAL
 # if !defined(HB_NO_VISIBILITY) && !defined(__MINGW32__) && !defined(__CYGWIN__) && !defined(_MSC_VER) && !defined(__SUNPRO_CC)
 #  define HB_INTERNAL __attribute__((__visibility__("hidden")))
 # elif defined(__MINGW32__)
    /* We use -export-symbols on mingw32, since it does not support visibility attributes. */
 #  define HB_INTERNAL
 # elif defined (_MSC_VER) && defined (HB_DLL_EXPORT)
    /* We do not try to export internal symbols on Visual Studio */
 #  define HB_INTERNAL
 #else
 #  define HB_INTERNAL
 #  define HB_NO_VISIBILITY 1
 # endif
 #endif

 /* https://github.com/harfbuzz/harfbuzz/issues/1651 */
 #if defined(__clang__) && __clang_major__ < 10
 #define static_const static
 #else
 #define static_const static const
 #endif

 #if defined(__GNUC__) && (__GNUC__ >= 3)
 #define HB_FUNC __PRETTY_FUNCTION__
 #elif defined(_MSC_VER)
 #define HB_FUNC __FUNCSIG__
 #else
 #define HB_FUNC __func__
 #endif

 #if defined(__SUNPRO_CC) && (__SUNPRO_CC < 0x5140)
 /* https://github.com/harfbuzz/harfbuzz/issues/630 */
 #define __restrict
 #endif

 /*
  * Borrowed from https://bugzilla.mozilla.org/show_bug.cgi?id=1215411
  * HB_FALLTHROUGH is an annotation to suppress compiler warnings about switch
  * cases that fall through without a break or return statement. HB_FALLTHROUGH
  * is only needed on cases that have code:
  *
  * switch (foo) {
  *   case 1: // These cases have no code. No fallthrough annotations are needed.
  *   case 2:
  *   case 3:
  *     foo = 4; // This case has code, so a fallthrough annotation is needed:
  *     HB_FALLTHROUGH;
  *   default:
  *     return foo;
  * }
  */
 #if defined(__clang__) && __cplusplus >= 201103L
    /* clang's fallthrough annotations are only available starting in C++11. */
 #  define HB_FALLTHROUGH [[clang::fallthrough]]
 #elif defined(__GNUC__) && (__GNUC__ >= 7)
    /* GNU fallthrough attribute is available from GCC7 */
 #  define HB_FALLTHROUGH __attribute__((fallthrough))
 #elif defined(_MSC_VER)
    /*
     * MSVC's __fallthrough annotations are checked by /analyze (Code Analysis):
     * https://msdn.microsoft.com/en-us/library/ms235402%28VS.80%29.aspx
     */
 #  include <sal.h>
 #  define HB_FALLTHROUGH __fallthrough
 #else
 #  define HB_FALLTHROUGH /* FALLTHROUGH */
 #endif

 /* A tag to enforce use of return value for a function */
 #if __cplusplus >= 201703L
 #  define HB_NODISCARD [[nodiscard]]
 #elif defined(__GNUC__) || defined(__clang__)
 #  define HB_NODISCARD __attribute__((warn_unused_result))
 #elif defined(_MSC_VER)
 #  define HB_NODISCARD _Check_return_
 #else
 #  define HB_NODISCARD
 #endif

 /* https://github.com/harfbuzz/harfbuzz/issues/1852 */
 #if defined(__clang__) && !(defined(_AIX) && (defined(__IBMCPP__) || defined(__ibmxl__)))
 /* Disable certain sanitizer errors. */
 /* https://github.com/harfbuzz/harfbuzz/issues/1247 */
 #define HB_NO_SANITIZE_SIGNED_INTEGER_OVERFLOW __attribute__((no_sanitize("signed-integer-overflow")))
 #else
 #define HB_NO_SANITIZE_SIGNED_INTEGER_OVERFLOW
 #endif


 #ifdef _WIN32
    /* We need Windows Vista for both Uniscribe backend and for
     * MemoryBarrier.  We don't support compiling on Windows XP,
     * though we run on it fine. */
 #  if defined(_WIN32_WINNT) && _WIN32_WINNT < 0x0600
 #    undef _WIN32_WINNT
 #  endif
 #  ifndef _WIN32_WINNT
 #    if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
 #      define _WIN32_WINNT 0x0600
 #    endif
 #  endif
 #  ifndef WIN32_LEAN_AND_MEAN
 #    define WIN32_LEAN_AND_MEAN 1
 #  endif
 #  ifndef STRICT
 #    define STRICT 1
 #  endif

 #  if defined(_WIN32_WCE)
      /* Some things not defined on Windows CE. */
 #    define vsnprintf _vsnprintf
 #    ifndef HB_NO_GETENV
 #      define HB_NO_GETENV
 #    endif
 #    if _WIN32_WCE < 0x800
 #      define HB_NO_SETLOCALE
 #      define HB_NO_ERRNO
 #    endif
 #  elif !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
 #    ifndef HB_NO_GETENV
 #      define HB_NO_GETENV
 #    endif
 #  endif
 #  if defined(_MSC_VER) && _MSC_VER < 1900
 #    define snprintf _snprintf
 #  endif
 #endif

 #ifdef HB_NO_GETENV
 #define getenv(Name) nullptr
 #endif

 #ifndef HB_NO_ERRNO
 #  include <cerrno>
 #else
 static int HB_UNUSED _hb_errno = 0;
 #  undef errno
 #  define errno _hb_errno
 #endif

 #define HB_STMT_START do
 #define HB_STMT_END   while (0)

 #if defined(HAVE_ATEXIT) && !defined(HB_USE_ATEXIT)
 /* atexit() is only safe to be called from shared libraries on certain
  * platforms.  Whitelist.
  * https://bugs.freedesktop.org/show_bug.cgi?id=82246 */
 #  if defined(__linux) && defined(__GLIBC_PREREQ)
 #    if __GLIBC_PREREQ(2,3)
 /* From atexit() manpage, it's safe with glibc 2.2.3 on Linux. */
 #      define HB_USE_ATEXIT 1
 #    endif
 #  elif defined(_MSC_VER) || defined(__MINGW32__)
 /* For MSVC:
  * https://msdn.microsoft.com/en-us/library/tze57ck3.aspx
  * https://msdn.microsoft.com/en-us/library/zk17ww08.aspx
  * mingw32 headers say atexit is safe to use in shared libraries.
  */
 #    define HB_USE_ATEXIT 1
 #  elif defined(__ANDROID__)
 /* This is available since Android NKD r8 or r8b:
  * https://issuetracker.google.com/code/p/android/issues/detail?id=6455
  */
 #    define HB_USE_ATEXIT 1
 #  elif defined(__APPLE__)
 /* For macOS and related platforms, the atexit man page indicates
  * that it will be invoked when the library is unloaded, not only
  * at application exit.
  */
 #    define HB_USE_ATEXIT 1
 #  endif
 #endif /* defined(HAVE_ATEXIT) && !defined(HB_USE_ATEXIT) */
 #ifdef HB_NO_ATEXIT
 #  undef HB_USE_ATEXIT
 #endif
 #ifndef HB_USE_ATEXIT
 #  define HB_USE_ATEXIT 0
 #endif
 #if !HB_USE_ATEXIT
 #  define hb_atexit(_) HB_STMT_START { if (0) (_) (); } HB_STMT_END
 #else /* HB_USE_ATEXIT */
 #  ifdef HAVE_ATEXIT
 #    define hb_atexit atexit
 #  else
      template <void (*function) (void)> struct hb_atexit_t { ~hb_atexit_t () { function (); } };
 #    define hb_atexit(f) static hb_atexit_t<f> _hb_atexit_##__LINE__;
 #  endif
 #endif

 /* Lets assert int types.  Saves trouble down the road. */
 static_assert ((sizeof (hb_codepoint_t) == 4), "");
 static_assert ((sizeof (hb_position_t) == 4), "");
 static_assert ((sizeof (hb_mask_t) == 4), "");
 static_assert ((sizeof (hb_var_int_t) == 4), "");


 /* Headers we include for everyone.  Keep topologically sorted by dependency.
  * They express dependency amongst themselves, but no other file should include
  * them directly.*/
 #include "hb-meta.hh"
 #include "hb-mutex.hh"
 #include "hb-number.hh"
 #include "hb-atomic.hh"	// Requires: hb-meta
 #include "hb-null.hh"	// Requires: hb-meta
 #include "hb-algs.hh"	// Requires: hb-meta hb-null hb-number
 #include "hb-iter.hh"	// Requires: hb-algs hb-meta
 #include "hb-debug.hh"	// Requires: hb-algs hb-atomic
 #include "hb-array.hh"	// Requires: hb-algs hb-iter hb-null
 #include "hb-vector.hh"	// Requires: hb-array hb-null
 #include "hb-object.hh"	// Requires: hb-atomic hb-mutex hb-vector

 #endif /* HB_HH */
	/*
	* Copyright © 2007,2008,2009 Red Hat, Inc.
	* Copyright © 2011,2012 Google, Inc.
	*
	* This is part of HarfBuzz, a text shaping library.
	*
	* Permission is hereby granted, without written agreement and without
	* license or royalty fees, to use, copy, modify, and distribute this
	* software and its documentation for any purpose, provided that the
	* above copyright notice and the following two paragraphs appear in
	* all copies of this software.
	*
	* IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
	* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
	* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
	* IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
	* DAMAGE.
	*
	* THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
	* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
	* FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
	* ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
	* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
	*
	* Red Hat Author(s): Behdad Esfahbod
	* Google Author(s): Behdad Esfahbod
	*/

	#ifndef HB_HH
	#define HB_HH


	#ifndef HB_NO_PRAGMA_GCC_DIAGNOSTIC
	#ifdef _MSC_VER
	#pragma warning( disable: 4068 ) /* Unknown pragma */
	#endif
	#if defined(__GNUC__) \|\| defined(__clang__)
	/* Rules:
	*
	* - All pragmas are declared GCC even if they are clang ones. Otherwise GCC
	* nags, even though we instruct it to ignore -Wunknown-pragmas. ¯\_(ツ)_/¯
	*
	* - Within each category, keep sorted.
	*
	* - Warnings whose scope can be expanded in future compiler versions shall
	* be declared as "warning". Otherwise, either ignored or error.
	*/

	/* Setup. Don't sort order within this category. */
	#ifndef HB_NO_PRAGMA_GCC_DIAGNOSTIC_WARNING
	#pragma GCC diagnostic warning "-Wall"
	#pragma GCC diagnostic warning "-Wextra"
	#endif
	#ifndef HB_NO_PRAGMA_GCC_DIAGNOSTIC_IGNORED
	#pragma GCC diagnostic ignored "-Wpragmas"
	#pragma GCC diagnostic ignored "-Wunknown-pragmas"
	#pragma GCC diagnostic ignored "-Wunknown-warning-option"
	#endif
	#ifndef HB_NO_PRAGMA_GCC_DIAGNOSTIC_WARNING
	//#pragma GCC diagnostic warning "-Weverything"
	#endif

	/* Error. Should never happen. */
	#ifndef HB_NO_PRAGMA_GCC_DIAGNOSTIC_ERROR
	#pragma GCC diagnostic error "-Wbitwise-instead-of-logical"
	#pragma GCC diagnostic error "-Wcast-align"
	#pragma GCC diagnostic error "-Wcast-function-type"
	#pragma GCC diagnostic error "-Wdelete-non-virtual-dtor"
	#pragma GCC diagnostic error "-Wembedded-directive"
	#pragma GCC diagnostic error "-Wextra-semi-stmt"
	#pragma GCC diagnostic error "-Wformat-security"
	#pragma GCC diagnostic error "-Wimplicit-function-declaration"
	#pragma GCC diagnostic error "-Winit-self"
	#pragma GCC diagnostic error "-Winjected-class-name"
	#pragma GCC diagnostic error "-Wmissing-braces"
	#pragma GCC diagnostic error "-Wmissing-declarations"
	#pragma GCC diagnostic error "-Wmissing-prototypes"
	#pragma GCC diagnostic error "-Wnarrowing"
	#pragma GCC diagnostic error "-Wnested-externs"
	#pragma GCC diagnostic error "-Wold-style-definition"
	#pragma GCC diagnostic error "-Wpointer-arith"
	#pragma GCC diagnostic error "-Wredundant-decls"
	#pragma GCC diagnostic error "-Wreorder"
	#pragma GCC diagnostic error "-Wsign-compare"
	#pragma GCC diagnostic error "-Wstrict-prototypes"
	#pragma GCC diagnostic error "-Wstring-conversion"
	#pragma GCC diagnostic error "-Wswitch-enum"
	#pragma GCC diagnostic error "-Wtautological-overlap-compare"
	#pragma GCC diagnostic error "-Wunneeded-internal-declaration"
	#pragma GCC diagnostic error "-Wunused"
	#pragma GCC diagnostic error "-Wunused-local-typedefs"
	#pragma GCC diagnostic error "-Wunused-value"
	#pragma GCC diagnostic error "-Wunused-variable"
	#pragma GCC diagnostic error "-Wvla"
	#pragma GCC diagnostic error "-Wwrite-strings"
	#endif

	/* Warning. To be investigated if happens. */
	#ifndef HB_NO_PRAGMA_GCC_DIAGNOSTIC_WARNING
	#pragma GCC diagnostic warning "-Wbuiltin-macro-redefined"
	#pragma GCC diagnostic warning "-Wdeprecated"
	#pragma GCC diagnostic warning "-Wdeprecated-declarations"
	#pragma GCC diagnostic warning "-Wdisabled-optimization"
	#pragma GCC diagnostic warning "-Wdouble-promotion"
	#pragma GCC diagnostic warning "-Wformat=2"
	#pragma GCC diagnostic warning "-Wignored-pragma-optimize"
	#pragma GCC diagnostic warning "-Wlogical-op"
	#pragma GCC diagnostic warning "-Wmaybe-uninitialized"
	#pragma GCC diagnostic warning "-Wmissing-format-attribute"
	#pragma GCC diagnostic warning "-Wundef"
	#pragma GCC diagnostic warning "-Wunused-but-set-variable"
	#endif

	/* Ignored currently, but should be fixed at some point. */
	#ifndef HB_NO_PRAGMA_GCC_DIAGNOSTIC_IGNORED
	#pragma GCC diagnostic ignored "-Wconversion" // TODO fix
	#pragma GCC diagnostic ignored "-Wformat-signedness" // TODO fix
	#pragma GCC diagnostic ignored "-Wshadow" // TODO fix
	#pragma GCC diagnostic ignored "-Wunsafe-loop-optimizations" // TODO fix
	#pragma GCC diagnostic ignored "-Wunused-parameter" // TODO fix
	#if defined(__GNUC__) && !defined(__clang__)
	#pragma GCC diagnostic ignored "-Wunused-result" // TODO fix
	#endif
	#endif

	/* Ignored intentionally. */
	#ifndef HB_NO_PRAGMA_GCC_DIAGNOSTIC_IGNORED
	#pragma GCC diagnostic ignored "-Wclass-memaccess"
	#pragma GCC diagnostic ignored "-Wformat-nonliteral"
	#pragma GCC diagnostic ignored "-Wformat-zero-length"
	#pragma GCC diagnostic ignored "-Wmissing-field-initializers"
	#pragma GCC diagnostic ignored "-Wpacked" // Erratic impl in clang
	#pragma GCC diagnostic ignored "-Wrange-loop-analysis" // https://github.com/harfbuzz/harfbuzz/issues/2834
	#pragma GCC diagnostic ignored "-Wstrict-aliasing"
	#pragma GCC diagnostic ignored "-Wtype-limits"
	#pragma GCC diagnostic ignored "-Wc++11-compat" // only gcc raises it
	#endif

	#endif
	#endif


	#include "hb-config.hh"


	/*
	* Following added based on what AC_USE_SYSTEM_EXTENSIONS adds to
	* config.h.in. Copied here for the convenience of those embedding
	* HarfBuzz and not using our build system.
	*/
	/* Enable extensions on AIX 3, Interix. */
	#ifndef _ALL_SOURCE
	# define _ALL_SOURCE 1
	#endif
	/* Enable GNU extensions on systems that have them. */
	#ifndef _GNU_SOURCE
	# define _GNU_SOURCE 1
	#endif
	/* Enable threading extensions on Solaris. */
	#ifndef _POSIX_PTHREAD_SEMANTICS
	# define _POSIX_PTHREAD_SEMANTICS 1
	#endif
	/* Enable extensions on HP NonStop. */
	#ifndef _TANDEM_SOURCE
	# define _TANDEM_SOURCE 1
	#endif
	/* Enable general extensions on Solaris. */
	#ifndef __EXTENSIONS__
	# define __EXTENSIONS__ 1
	#endif

	#if defined (_MSC_VER) && defined (HB_DLL_EXPORT)
	#define HB_EXTERN __declspec (dllexport) extern
	#endif

	#include "hb.h"
	#define HB_H_IN
	#include "hb-ot.h"
	#define HB_OT_H_IN
	#include "hb-aat.h"
	#define HB_AAT_H_IN

	#include <cassert>
	#include <cfloat>
	#include <climits>
	#ifdef _MSC_VER
	# define _USE_MATH_DEFINES
	#endif
	#include <cmath>
	#include <cstdarg>
	#include <cstddef>
	#include <cstdio>
	#include <cstdlib>
	#include <cstring>

	#if (defined(_MSC_VER) && _MSC_VER >= 1500) \|\| defined(__MINGW32__)
	#ifdef __MINGW32_VERSION
	#ifndef WIN32_LEAN_AND_MEAN
	#define WIN32_LEAN_AND_MEAN 1
	#endif
	#else
	#include <intrin.h>
	#endif
	#endif

	#ifdef _WIN32
	#include <windows.h>
	#include <winapifamily.h>
	#endif

	#define HB_PASTE1(a,b) a##b
	#define HB_PASTE(a,b) HB_PASTE1(a,b)


	/* Compile-time custom allocator support. */

	#if !defined(HB_CUSTOM_MALLOC) \
	&& defined(hb_malloc_impl) \
	&& defined(hb_calloc_impl) \
	&& defined(hb_realloc_impl) \
	&& defined(hb_free_impl)
	#define HB_CUSTOM_MALLOC
	#endif

	#ifdef HB_CUSTOM_MALLOC
	extern "C" void* hb_malloc_impl(size_t size);
	extern "C" void* hb_calloc_impl(size_t nmemb, size_t size);
	extern "C" void* hb_realloc_impl(void *ptr, size_t size);
	extern "C" void hb_free_impl(void *ptr);
	#define hb_malloc hb_malloc_impl
	#define hb_calloc hb_calloc_impl
	#define hb_realloc hb_realloc_impl
	#define hb_free hb_free_impl
	#else
	#define hb_malloc malloc
	#define hb_calloc calloc
	#define hb_realloc realloc
	#define hb_free free
	#endif


	/*
	* Compiler attributes
	*/

	#if (defined(__GNUC__) \|\| defined(__clang__)) && defined(__OPTIMIZE__)
	#define likely(expr) (__builtin_expect (!!(expr), 1))
	#define unlikely(expr) (__builtin_expect (!!(expr), 0))
	#else
	#define likely(expr) (expr)
	#define unlikely(expr) (expr)
	#endif

	#if !defined(__GNUC__) && !defined(__clang__)
	#undef __attribute__
	#define __attribute__(x)
	#endif

	#if defined(__GNUC__) && (__GNUC__ >= 3)
	#define HB_PRINTF_FUNC(format_idx, arg_idx) __attribute__((__format__ (__printf__, format_idx, arg_idx)))
	#else
	#define HB_PRINTF_FUNC(format_idx, arg_idx)
	#endif
	#if defined(__GNUC__) && (__GNUC__ >= 4) \|\| (__clang__)
	#define HB_UNUSED __attribute__((unused))
	#elif defined(_MSC_VER) /* https://github.com/harfbuzz/harfbuzz/issues/635 */
	#define HB_UNUSED __pragma(warning(suppress: 4100 4101))
	#else
	#define HB_UNUSED
	#endif

	#ifndef HB_INTERNAL
	# if !defined(HB_NO_VISIBILITY) && !defined(__MINGW32__) && !defined(__CYGWIN__) && !defined(_MSC_VER) && !defined(__SUNPRO_CC)
	# define HB_INTERNAL __attribute__((__visibility__("hidden")))
	# elif defined(__MINGW32__)
	/* We use -export-symbols on mingw32, since it does not support visibility attributes. */
	# define HB_INTERNAL
	# elif defined (_MSC_VER) && defined (HB_DLL_EXPORT)
	/* We do not try to export internal symbols on Visual Studio */
	# define HB_INTERNAL
	#else
	# define HB_INTERNAL
	# define HB_NO_VISIBILITY 1
	# endif
	#endif

	/* https://github.com/harfbuzz/harfbuzz/issues/1651 */
	#if defined(__clang__) && __clang_major__ < 10
	#define static_const static
	#else
	#define static_const static const
	#endif

	#if defined(__GNUC__) && (__GNUC__ >= 3)
	#define HB_FUNC __PRETTY_FUNCTION__
	#elif defined(_MSC_VER)
	#define HB_FUNC __FUNCSIG__
	#else
	#define HB_FUNC __func__
	#endif

	#if defined(__SUNPRO_CC) && (__SUNPRO_CC < 0x5140)
	/* https://github.com/harfbuzz/harfbuzz/issues/630 */
	#define __restrict
	#endif

	/*
	* Borrowed from https://bugzilla.mozilla.org/show_bug.cgi?id=1215411
	* HB_FALLTHROUGH is an annotation to suppress compiler warnings about switch
	* cases that fall through without a break or return statement. HB_FALLTHROUGH
	* is only needed on cases that have code:
	*
	* switch (foo) {
	* case 1: // These cases have no code. No fallthrough annotations are needed.
	* case 2:
	* case 3:
	* foo = 4; // This case has code, so a fallthrough annotation is needed:
	* HB_FALLTHROUGH;
	* default:
	* return foo;
	* }
	*/
	#if defined(__clang__) && __cplusplus >= 201103L
	/* clang's fallthrough annotations are only available starting in C++11. */
	# define HB_FALLTHROUGH [[clang::fallthrough]]
	#elif defined(__GNUC__) && (__GNUC__ >= 7)
	/* GNU fallthrough attribute is available from GCC7 */
	# define HB_FALLTHROUGH __attribute__((fallthrough))
	#elif defined(_MSC_VER)
	/*
	* MSVC's __fallthrough annotations are checked by /analyze (Code Analysis):
	* https://msdn.microsoft.com/en-us/library/ms235402%28VS.80%29.aspx
	*/
	# include <sal.h>
	# define HB_FALLTHROUGH __fallthrough
	#else
	# define HB_FALLTHROUGH /* FALLTHROUGH */
	#endif

	/* A tag to enforce use of return value for a function */
	#if __cplusplus >= 201703L
	# define HB_NODISCARD [[nodiscard]]
	#elif defined(__GNUC__) \|\| defined(__clang__)
	# define HB_NODISCARD __attribute__((warn_unused_result))
	#elif defined(_MSC_VER)
	# define HB_NODISCARD _Check_return_
	#else
	# define HB_NODISCARD
	#endif

	/* https://github.com/harfbuzz/harfbuzz/issues/1852 */
	#if defined(__clang__) && !(defined(_AIX) && (defined(__IBMCPP__) \|\| defined(__ibmxl__)))
	/* Disable certain sanitizer errors. */
	/* https://github.com/harfbuzz/harfbuzz/issues/1247 */
	#define HB_NO_SANITIZE_SIGNED_INTEGER_OVERFLOW __attribute__((no_sanitize("signed-integer-overflow")))
	#else
	#define HB_NO_SANITIZE_SIGNED_INTEGER_OVERFLOW
	#endif


	#ifdef _WIN32
	/* We need Windows Vista for both Uniscribe backend and for
	* MemoryBarrier. We don't support compiling on Windows XP,
	* though we run on it fine. */
	# if defined(_WIN32_WINNT) && _WIN32_WINNT < 0x0600
	# undef _WIN32_WINNT
	# endif
	# ifndef _WIN32_WINNT
	# if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
	# define _WIN32_WINNT 0x0600
	# endif
	# endif
	# ifndef WIN32_LEAN_AND_MEAN
	# define WIN32_LEAN_AND_MEAN 1
	# endif
	# ifndef STRICT
	# define STRICT 1
	# endif

	# if defined(_WIN32_WCE)
	/* Some things not defined on Windows CE. */
	# define vsnprintf _vsnprintf
	# ifndef HB_NO_GETENV
	# define HB_NO_GETENV
	# endif
	# if _WIN32_WCE < 0x800
	# define HB_NO_SETLOCALE
	# define HB_NO_ERRNO
	# endif
	# elif !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
	# ifndef HB_NO_GETENV
	# define HB_NO_GETENV
	# endif
	# endif
	# if defined(_MSC_VER) && _MSC_VER < 1900
	# define snprintf _snprintf
	# endif
	#endif

	#ifdef HB_NO_GETENV
	#define getenv(Name) nullptr
	#endif

	#ifndef HB_NO_ERRNO
	# include <cerrno>
	#else
	static int HB_UNUSED _hb_errno = 0;
	# undef errno
	# define errno _hb_errno
	#endif

	#define HB_STMT_START do
	#define HB_STMT_END while (0)

	#if defined(HAVE_ATEXIT) && !defined(HB_USE_ATEXIT)
	/* atexit() is only safe to be called from shared libraries on certain
	* platforms. Whitelist.
	* https://bugs.freedesktop.org/show_bug.cgi?id=82246 */
	# if defined(__linux) && defined(__GLIBC_PREREQ)
	# if __GLIBC_PREREQ(2,3)
	/* From atexit() manpage, it's safe with glibc 2.2.3 on Linux. */
	# define HB_USE_ATEXIT 1
	# endif
	# elif defined(_MSC_VER) \|\| defined(__MINGW32__)
	/* For MSVC:
	* https://msdn.microsoft.com/en-us/library/tze57ck3.aspx
	* https://msdn.microsoft.com/en-us/library/zk17ww08.aspx
	* mingw32 headers say atexit is safe to use in shared libraries.
	*/
	# define HB_USE_ATEXIT 1
	# elif defined(__ANDROID__)
	/* This is available since Android NKD r8 or r8b:
	* https://issuetracker.google.com/code/p/android/issues/detail?id=6455
	*/
	# define HB_USE_ATEXIT 1
	# elif defined(__APPLE__)
	/* For macOS and related platforms, the atexit man page indicates
	* that it will be invoked when the library is unloaded, not only
	* at application exit.
	*/
	# define HB_USE_ATEXIT 1
	# endif
	#endif /* defined(HAVE_ATEXIT) && !defined(HB_USE_ATEXIT) */
	#ifdef HB_NO_ATEXIT
	# undef HB_USE_ATEXIT
	#endif
	#ifndef HB_USE_ATEXIT
	# define HB_USE_ATEXIT 0
	#endif
	#if !HB_USE_ATEXIT
	# define hb_atexit(_) HB_STMT_START { if (0) (_) (); } HB_STMT_END
	#else /* HB_USE_ATEXIT */
	# ifdef HAVE_ATEXIT
	# define hb_atexit atexit
	# else
	template <void (*function) (void)> struct hb_atexit_t { ~hb_atexit_t () { function (); } };
	# define hb_atexit(f) static hb_atexit_t<f> _hb_atexit_##__LINE__;
	# endif
	#endif

	/* Lets assert int types. Saves trouble down the road. */
	static_assert ((sizeof (hb_codepoint_t) == 4), "");
	static_assert ((sizeof (hb_position_t) == 4), "");
	static_assert ((sizeof (hb_mask_t) == 4), "");
	static_assert ((sizeof (hb_var_int_t) == 4), "");


	/* Headers we include for everyone. Keep topologically sorted by dependency.
	* They express dependency amongst themselves, but no other file should include
	* them directly.*/
	#include "hb-meta.hh"
	#include "hb-mutex.hh"
	#include "hb-number.hh"
	#include "hb-atomic.hh" // Requires: hb-meta
	#include "hb-null.hh" // Requires: hb-meta
	#include "hb-algs.hh" // Requires: hb-meta hb-null hb-number
	#include "hb-iter.hh" // Requires: hb-algs hb-meta
	#include "hb-debug.hh" // Requires: hb-algs hb-atomic
	#include "hb-array.hh" // Requires: hb-algs hb-iter hb-null
	#include "hb-vector.hh" // Requires: hb-array hb-null
	#include "hb-object.hh" // Requires: hb-atomic hb-mutex hb-vector

	#endif /* HB_HH */