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+/*
+ * 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 "-Wformat-signedness"
+#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 "-Wunsafe-loop-optimizations"
+#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 "-Wshadow" // 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 "-Wcast-function-type-strict" // https://github.com/harfbuzz/harfbuzz/pull/3859#issuecomment-1295409126
+#pragma GCC diagnostic ignored "-Wdangling-reference" // https://github.com/harfbuzz/harfbuzz/issues/4043
+#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"
+#include "hb-limits.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
+ */
+
+// gcc 10 has __has_builtin but not earlier versions. Sanction any gcc >= 5
+// clang defines it so no need.
+#ifdef __has_builtin
+#define hb_has_builtin __has_builtin
+#else
+#define hb_has_builtin(x) ((defined(__GNUC__) && __GNUC__ >= 5))
+#endif
+
+#if defined(__OPTIMIZE__) && hb_has_builtin(__builtin_expect)
+#define likely(expr) __builtin_expect (bool(expr), 1)
+#define unlikely(expr) __builtin_expect (bool(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
+
+
+// Locale business
+
+#if !defined(HB_NO_SETLOCALE) && (!defined(HAVE_NEWLOCALE) || !defined(HAVE_USELOCALE))
+#define HB_NO_SETLOCALE 1
+#endif
+
+#ifndef HB_NO_SETLOCALE
+
+#include <locale.h>
+#ifdef HAVE_XLOCALE_H
+#include <xlocale.h> // Needed on BSD/OS X for uselocale
+#endif
+
+#ifdef WIN32
+#define hb_locale_t _locale_t
+#else
+#define hb_locale_t locale_t
+#endif
+#define hb_setlocale setlocale
+#define hb_uselocale uselocale
+
+#else
+
+#define hb_locale_t void *
+#define hb_setlocale(Category, Locale) "C"
+#define hb_uselocale(Locale) ((hb_locale_t) 0)
+
+#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), "");
+
+
+/* Pie time. */
+// https://github.com/harfbuzz/harfbuzz/issues/4166
+#define HB_PI 3.14159265358979f
+#define HB_2_PI (2.f * HB_PI)
+
+
+/* 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 */