487 lines
16 KiB
C++
487 lines
16 KiB
C++
/*
|
|
* 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 "-Wcomma"
|
|
#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>
|
|
#if defined(_MSC_VER) && !defined(_USE_MATH_DEFINES)
|
|
# 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
|
|
#ifndef hb_atexit
|
|
#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
|
|
#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-cplusplus.hh"
|
|
#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 */
|