author | prr |
Thu, 07 Dec 2017 11:55:06 -0800 | |
changeset 48274 | 51772bf1fb0c |
parent 47216 | 71c04702a3d5 |
child 50352 | 25db2c8f3cf8 |
permissions | -rw-r--r-- |
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/* |
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* Copyright © 2007,2008,2009 Red Hat, Inc. |
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* Copyright © 2011,2012 Google, Inc. |
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* |
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* This is part of HarfBuzz, a text shaping library. |
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* |
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* Permission is hereby granted, without written agreement and without |
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* license or royalty fees, to use, copy, modify, and distribute this |
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* software and its documentation for any purpose, provided that the |
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* above copyright notice and the following two paragraphs appear in |
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* all copies of this software. |
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* |
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* IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR |
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* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES |
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* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN |
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* IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH |
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* DAMAGE. |
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* |
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* THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, |
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* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND |
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* FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS |
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* ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO |
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* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. |
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* |
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* Red Hat Author(s): Behdad Esfahbod |
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* Google Author(s): Behdad Esfahbod |
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*/ |
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|
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#ifndef HB_PRIVATE_HH |
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#define HB_PRIVATE_HH |
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|
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#ifdef HAVE_CONFIG_H |
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#include "config.h" |
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#endif |
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#include "hb.h" |
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#define HB_H_IN |
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#ifdef HAVE_OT |
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#include "hb-ot.h" |
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#define HB_OT_H_IN |
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#endif |
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#include <stdlib.h> |
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#include <stddef.h> |
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#include <string.h> |
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#include <assert.h> |
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#include <errno.h> |
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#include <stdio.h> |
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#include <stdarg.h> |
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#define HB_PASTE1(a,b) a##b |
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#define HB_PASTE(a,b) HB_PASTE1(a,b) |
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/* Compile-time custom allocator support. */ |
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|
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#if defined(hb_malloc_impl) \ |
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&& defined(hb_calloc_impl) \ |
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&& defined(hb_realloc_impl) \ |
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&& defined(hb_free_impl) |
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extern "C" void* hb_malloc_impl(size_t size); |
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extern "C" void* hb_calloc_impl(size_t nmemb, size_t size); |
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extern "C" void* hb_realloc_impl(void *ptr, size_t size); |
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extern "C" void hb_free_impl(void *ptr); |
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#define malloc hb_malloc_impl |
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#define calloc hb_calloc_impl |
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#define realloc hb_realloc_impl |
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#define free hb_free_impl |
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#endif |
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/* Compiler attributes */ |
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#if __cplusplus < 201103L |
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#ifndef nullptr |
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#define nullptr NULL |
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#endif |
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// Static assertions |
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#ifndef static_assert |
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#define static_assert(e, msg) \ |
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HB_UNUSED typedef int HB_PASTE(static_assertion_failed_at_line_, __LINE__) [(e) ? 1 : -1] |
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#endif // static_assert |
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#endif // __cplusplus < 201103L |
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#define _GNU_SOURCE 1 |
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#if (defined(__GNUC__) || defined(__clang__)) && defined(__OPTIMIZE__) |
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#define likely(expr) (__builtin_expect (!!(expr), 1)) |
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#define unlikely(expr) (__builtin_expect (!!(expr), 0)) |
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#else |
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#define likely(expr) (expr) |
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#define unlikely(expr) (expr) |
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#endif |
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#if !defined(__GNUC__) && !defined(__clang__) |
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#undef __attribute__ |
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#define __attribute__(x) |
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#endif |
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#if __GNUC__ >= 3 |
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#define HB_PURE_FUNC __attribute__((pure)) |
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#define HB_CONST_FUNC __attribute__((const)) |
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#define HB_PRINTF_FUNC(format_idx, arg_idx) __attribute__((__format__ (__printf__, format_idx, arg_idx))) |
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#else |
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#define HB_PURE_FUNC |
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#define HB_CONST_FUNC |
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#define HB_PRINTF_FUNC(format_idx, arg_idx) |
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#endif |
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#if __GNUC__ >= 4 |
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#define HB_UNUSED __attribute__((unused)) |
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#else |
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#define HB_UNUSED |
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#endif |
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#ifndef HB_INTERNAL |
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# if !defined(__MINGW32__) && !defined(__CYGWIN__) |
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# define HB_INTERNAL __attribute__((__visibility__("hidden"))) |
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# else |
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# define HB_INTERNAL |
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# endif |
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#endif |
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#if __GNUC__ >= 3 |
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#define HB_FUNC __PRETTY_FUNCTION__ |
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#elif defined(_MSC_VER) |
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#define HB_FUNC __FUNCSIG__ |
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#else |
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#define HB_FUNC __func__ |
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#endif |
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/* |
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* Borrowed from https://bugzilla.mozilla.org/show_bug.cgi?id=1215411 |
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* HB_FALLTHROUGH is an annotation to suppress compiler warnings about switch |
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* cases that fall through without a break or return statement. HB_FALLTHROUGH |
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* is only needed on cases that have code: |
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* |
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* switch (foo) { |
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* case 1: // These cases have no code. No fallthrough annotations are needed. |
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* case 2: |
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* case 3: |
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* foo = 4; // This case has code, so a fallthrough annotation is needed: |
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* HB_FALLTHROUGH; |
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* default: |
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* return foo; |
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* } |
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*/ |
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#if defined(__clang__) && __cplusplus >= 201103L |
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/* clang's fallthrough annotations are only available starting in C++11. */ |
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# define HB_FALLTHROUGH [[clang::fallthrough]] |
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#elif defined(_MSC_VER) |
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/* |
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* MSVC's __fallthrough annotations are checked by /analyze (Code Analysis): |
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* https://msdn.microsoft.com/en-us/library/ms235402%28VS.80%29.aspx |
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*/ |
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# include <sal.h> |
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# define HB_FALLTHROUGH __fallthrough |
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#else |
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# define HB_FALLTHROUGH /* FALLTHROUGH */ |
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#endif |
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#if defined(_WIN32) || defined(__CYGWIN__) |
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/* We need Windows Vista for both Uniscribe backend and for |
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* MemoryBarrier. We don't support compiling on Windows XP, |
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* though we run on it fine. */ |
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# if defined(_WIN32_WINNT) && _WIN32_WINNT < 0x0600 |
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# undef _WIN32_WINNT |
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# endif |
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# ifndef _WIN32_WINNT |
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# define _WIN32_WINNT 0x0600 |
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# endif |
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# ifndef WIN32_LEAN_AND_MEAN |
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# define WIN32_LEAN_AND_MEAN 1 |
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# endif |
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# ifndef STRICT |
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# define STRICT 1 |
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# endif |
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# if defined(_WIN32_WCE) |
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/* Some things not defined on Windows CE. */ |
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# define vsnprintf _vsnprintf |
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# define getenv(Name) nullptr |
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# if _WIN32_WCE < 0x800 |
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# define setlocale(Category, Locale) "C" |
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static int errno = 0; /* Use something better? */ |
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# endif |
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# elif defined(WINAPI_FAMILY) && (WINAPI_FAMILY==WINAPI_FAMILY_PC_APP || WINAPI_FAMILY==WINAPI_FAMILY_PHONE_APP) |
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# define getenv(Name) nullptr |
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# endif |
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# if defined(_MSC_VER) && _MSC_VER < 1900 |
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# define snprintf _snprintf |
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# endif |
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#endif |
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#if HAVE_ATEXIT |
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/* atexit() is only safe to be called from shared libraries on certain |
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* platforms. Whitelist. |
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* https://bugs.freedesktop.org/show_bug.cgi?id=82246 */ |
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# if defined(__linux) && defined(__GLIBC_PREREQ) |
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# if __GLIBC_PREREQ(2,3) |
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/* From atexit() manpage, it's safe with glibc 2.2.3 on Linux. */ |
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# define HB_USE_ATEXIT 1 |
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# endif |
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# elif defined(_MSC_VER) || defined(__MINGW32__) |
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/* For MSVC: |
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* http://msdn.microsoft.com/en-ca/library/tze57ck3.aspx |
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* http://msdn.microsoft.com/en-ca/library/zk17ww08.aspx |
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* mingw32 headers say atexit is safe to use in shared libraries. |
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*/ |
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# define HB_USE_ATEXIT 1 |
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# elif defined(__ANDROID__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6)) |
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/* This was fixed in Android NKD r8 or r8b: |
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* https://code.google.com/p/android/issues/detail?id=6455 |
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* which introduced GCC 4.6: |
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* https://developer.android.com/tools/sdk/ndk/index.html |
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*/ |
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# define HB_USE_ATEXIT 1 |
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# endif |
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#endif |
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|
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/* Basics */ |
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|
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#undef MIN |
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template <typename Type> |
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static inline Type MIN (const Type &a, const Type &b) { return a < b ? a : b; } |
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|
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#undef MAX |
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template <typename Type> |
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static inline Type MAX (const Type &a, const Type &b) { return a > b ? a : b; } |
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|
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static inline unsigned int DIV_CEIL (const unsigned int a, unsigned int b) |
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{ return (a + (b - 1)) / b; } |
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236 |
|
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|
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#undef ARRAY_LENGTH |
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template <typename Type, unsigned int n> |
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static inline unsigned int ARRAY_LENGTH (const Type (&)[n]) { return n; } |
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/* A const version, but does not detect erratically being called on pointers. */ |
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#define ARRAY_LENGTH_CONST(__array) ((signed int) (sizeof (__array) / sizeof (__array[0]))) |
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|
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#define HB_STMT_START do |
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#define HB_STMT_END while (0) |
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|
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template <unsigned int cond> class hb_assert_constant_t; |
248 |
template <> class hb_assert_constant_t<1> {}; |
|
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|
250 |
#define ASSERT_STATIC_EXPR_ZERO(_cond) (0 * (unsigned int) sizeof (hb_assert_constant_t<_cond>)) |
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|
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/* Lets assert int types. Saves trouble down the road. */ |
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253 |
|
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static_assert ((sizeof (int8_t) == 1), ""); |
255 |
static_assert ((sizeof (uint8_t) == 1), ""); |
|
256 |
static_assert ((sizeof (int16_t) == 2), ""); |
|
257 |
static_assert ((sizeof (uint16_t) == 2), ""); |
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258 |
static_assert ((sizeof (int32_t) == 4), ""); |
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259 |
static_assert ((sizeof (uint32_t) == 4), ""); |
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static_assert ((sizeof (int64_t) == 8), ""); |
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static_assert ((sizeof (uint64_t) == 8), ""); |
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262 |
|
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static_assert ((sizeof (hb_codepoint_t) == 4), ""); |
264 |
static_assert ((sizeof (hb_position_t) == 4), ""); |
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static_assert ((sizeof (hb_mask_t) == 4), ""); |
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static_assert ((sizeof (hb_var_int_t) == 4), ""); |
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|
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/* We like our types POD */ |
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#define _ASSERT_TYPE_POD1(_line, _type) union _type_##_type##_on_line_##_line##_is_not_POD { _type instance; } |
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#define _ASSERT_TYPE_POD0(_line, _type) _ASSERT_TYPE_POD1 (_line, _type) |
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#define ASSERT_TYPE_POD(_type) _ASSERT_TYPE_POD0 (__LINE__, _type) |
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|
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#ifdef __GNUC__ |
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# define _ASSERT_INSTANCE_POD1(_line, _instance) \ |
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HB_STMT_START { \ |
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typedef __typeof__(_instance) _type_##_line; \ |
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_ASSERT_TYPE_POD1 (_line, _type_##_line); \ |
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} HB_STMT_END |
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281 |
#else |
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# define _ASSERT_INSTANCE_POD1(_line, _instance) typedef int _assertion_on_line_##_line##_not_tested |
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#endif |
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# define _ASSERT_INSTANCE_POD0(_line, _instance) _ASSERT_INSTANCE_POD1 (_line, _instance) |
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# define ASSERT_INSTANCE_POD(_instance) _ASSERT_INSTANCE_POD0 (__LINE__, _instance) |
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|
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/* Check _assertion in a method environment */ |
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#define _ASSERT_POD1(_line) \ |
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HB_UNUSED inline void _static_assertion_on_line_##_line (void) const \ |
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{ _ASSERT_INSTANCE_POD1 (_line, *this); /* Make sure it's POD. */ } |
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# define _ASSERT_POD0(_line) _ASSERT_POD1 (_line) |
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# define ASSERT_POD() _ASSERT_POD0 (__LINE__) |
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|
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|
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295 |
|
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296 |
/* Misc */ |
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297 |
|
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298 |
/* Void! */ |
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299 |
struct _hb_void_t {}; |
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300 |
typedef const _hb_void_t *hb_void_t; |
48274 | 301 |
#define HB_VOID ((const _hb_void_t *) nullptr) |
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302 |
|
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303 |
/* Return the number of 1 bits in mask. */ |
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304 |
static inline HB_CONST_FUNC unsigned int |
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305 |
_hb_popcount32 (uint32_t mask) |
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306 |
{ |
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307 |
#if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) |
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308 |
return __builtin_popcount (mask); |
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309 |
#else |
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310 |
/* "HACKMEM 169" */ |
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311 |
uint32_t y; |
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312 |
y = (mask >> 1) &033333333333; |
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313 |
y = mask - y - ((y >>1) & 033333333333); |
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314 |
return (((y + (y >> 3)) & 030707070707) % 077); |
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315 |
#endif |
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316 |
} |
48274 | 317 |
static inline HB_CONST_FUNC unsigned int |
318 |
_hb_popcount64 (uint64_t mask) |
|
319 |
{ |
|
320 |
#if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) |
|
321 |
if (sizeof (long) >= sizeof (mask)) |
|
322 |
return __builtin_popcountl (mask); |
|
323 |
#endif |
|
324 |
return _hb_popcount32 (mask & 0xFFFFFFFF) + _hb_popcount32 (mask >> 32); |
|
325 |
} |
|
326 |
template <typename T> static inline unsigned int _hb_popcount (T mask); |
|
327 |
template <> inline unsigned int _hb_popcount<uint32_t> (uint32_t mask) { return _hb_popcount32 (mask); } |
|
328 |
template <> inline unsigned int _hb_popcount<uint64_t> (uint64_t mask) { return _hb_popcount64 (mask); } |
|
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329 |
|
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330 |
/* Returns the number of bits needed to store number */ |
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331 |
static inline HB_CONST_FUNC unsigned int |
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332 |
_hb_bit_storage (unsigned int number) |
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333 |
{ |
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334 |
#if defined(__GNUC__) && (__GNUC__ >= 4) && defined(__OPTIMIZE__) |
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335 |
return likely (number) ? (sizeof (unsigned int) * 8 - __builtin_clz (number)) : 0; |
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336 |
#else |
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337 |
unsigned int n_bits = 0; |
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338 |
while (number) { |
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339 |
n_bits++; |
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340 |
number >>= 1; |
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341 |
} |
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342 |
return n_bits; |
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343 |
#endif |
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344 |
} |
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345 |
|
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346 |
/* Returns the number of zero bits in the least significant side of number */ |
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347 |
static inline HB_CONST_FUNC unsigned int |
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348 |
_hb_ctz (unsigned int number) |
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349 |
{ |
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350 |
#if defined(__GNUC__) && (__GNUC__ >= 4) && defined(__OPTIMIZE__) |
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351 |
return likely (number) ? __builtin_ctz (number) : 0; |
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352 |
#else |
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353 |
unsigned int n_bits = 0; |
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354 |
if (unlikely (!number)) return 0; |
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355 |
while (!(number & 1)) { |
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|
356 |
n_bits++; |
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357 |
number >>= 1; |
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358 |
} |
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359 |
return n_bits; |
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|
360 |
#endif |
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|
361 |
} |
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362 |
|
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363 |
static inline bool |
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364 |
_hb_unsigned_int_mul_overflows (unsigned int count, unsigned int size) |
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|
365 |
{ |
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|
366 |
return (size > 0) && (count >= ((unsigned int) -1) / size); |
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367 |
} |
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|
368 |
|
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|
369 |
|
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|
370 |
|
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|
371 |
/* arrays and maps */ |
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|
372 |
|
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373 |
|
48274 | 374 |
#define HB_PREALLOCED_ARRAY_INIT {0, 0, nullptr} |
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375 |
template <typename Type, unsigned int StaticSize=16> |
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376 |
struct hb_prealloced_array_t |
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377 |
{ |
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378 |
unsigned int len; |
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|
379 |
unsigned int allocated; |
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|
380 |
Type *array; |
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381 |
Type static_array[StaticSize]; |
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|
382 |
|
48274 | 383 |
void init (void) |
384 |
{ |
|
385 |
len = 0; |
|
386 |
allocated = ARRAY_LENGTH (static_array); |
|
387 |
array = static_array; |
|
388 |
} |
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|
389 |
|
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390 |
inline Type& operator [] (unsigned int i) { return array[i]; } |
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|
391 |
inline const Type& operator [] (unsigned int i) const { return array[i]; } |
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|
392 |
|
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|
393 |
inline Type *push (void) |
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|
394 |
{ |
48274 | 395 |
if (unlikely (!resize (len + 1))) |
396 |
return nullptr; |
|
397 |
||
398 |
return &array[len - 1]; |
|
399 |
} |
|
400 |
||
401 |
inline bool resize (unsigned int size) |
|
402 |
{ |
|
403 |
if (unlikely (size > allocated)) |
|
404 |
{ |
|
405 |
/* Need to reallocate */ |
|
406 |
||
407 |
unsigned int new_allocated = allocated; |
|
408 |
while (size >= new_allocated) |
|
409 |
new_allocated += (new_allocated >> 1) + 8; |
|
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|
410 |
|
48274 | 411 |
Type *new_array = nullptr; |
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|
412 |
|
48274 | 413 |
if (array == static_array) { |
414 |
new_array = (Type *) calloc (new_allocated, sizeof (Type)); |
|
415 |
if (new_array) |
|
416 |
memcpy (new_array, array, len * sizeof (Type)); |
|
417 |
} else { |
|
418 |
bool overflows = (new_allocated < allocated) || _hb_unsigned_int_mul_overflows (new_allocated, sizeof (Type)); |
|
419 |
if (likely (!overflows)) { |
|
420 |
new_array = (Type *) realloc (array, new_allocated * sizeof (Type)); |
|
421 |
} |
|
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|
422 |
} |
48274 | 423 |
|
424 |
if (unlikely (!new_array)) |
|
425 |
return false; |
|
426 |
||
427 |
array = new_array; |
|
428 |
allocated = new_allocated; |
|
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|
429 |
} |
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|
430 |
|
48274 | 431 |
len = size; |
432 |
return true; |
|
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|
433 |
} |
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|
434 |
|
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|
435 |
inline void pop (void) |
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|
436 |
{ |
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|
437 |
len--; |
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|
438 |
} |
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|
439 |
|
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|
440 |
inline void remove (unsigned int i) |
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|
441 |
{ |
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|
442 |
if (unlikely (i >= len)) |
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|
443 |
return; |
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|
444 |
memmove (static_cast<void *> (&array[i]), |
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|
445 |
static_cast<void *> (&array[i + 1]), |
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|
446 |
(len - i - 1) * sizeof (Type)); |
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|
447 |
len--; |
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|
448 |
} |
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|
449 |
|
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|
450 |
inline void shrink (unsigned int l) |
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|
451 |
{ |
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|
452 |
if (l < len) |
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|
453 |
len = l; |
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|
454 |
} |
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|
455 |
|
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|
456 |
template <typename T> |
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|
457 |
inline Type *find (T v) { |
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|
458 |
for (unsigned int i = 0; i < len; i++) |
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|
459 |
if (array[i] == v) |
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|
460 |
return &array[i]; |
48274 | 461 |
return nullptr; |
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|
462 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
463 |
template <typename T> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
464 |
inline const Type *find (T v) const { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
465 |
for (unsigned int i = 0; i < len; i++) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
466 |
if (array[i] == v) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
467 |
return &array[i]; |
48274 | 468 |
return nullptr; |
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
469 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
470 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
471 |
inline void qsort (void) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
472 |
{ |
48274 | 473 |
::qsort (array, len, sizeof (Type), Type::cmp); |
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
474 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
475 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
476 |
inline void qsort (unsigned int start, unsigned int end) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
477 |
{ |
48274 | 478 |
::qsort (array + start, end - start, sizeof (Type), Type::cmp); |
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
479 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
480 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
481 |
template <typename T> |
48274 | 482 |
inline Type *bsearch (T *x) |
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
483 |
{ |
48274 | 484 |
unsigned int i; |
485 |
return bfind (x, &i) ? &array[i] : nullptr; |
|
486 |
} |
|
487 |
template <typename T> |
|
488 |
inline const Type *bsearch (T *x) const |
|
489 |
{ |
|
490 |
unsigned int i; |
|
491 |
return bfind (x, &i) ? &array[i] : nullptr; |
|
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
492 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
493 |
template <typename T> |
48274 | 494 |
inline bool bfind (T *x, unsigned int *i) const |
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
495 |
{ |
48274 | 496 |
int min = 0, max = (int) this->len - 1; |
497 |
while (min <= max) |
|
498 |
{ |
|
499 |
int mid = (min + max) / 2; |
|
500 |
int c = this->array[mid].cmp (x); |
|
501 |
if (c < 0) |
|
502 |
max = mid - 1; |
|
503 |
else if (c > 0) |
|
504 |
min = mid + 1; |
|
505 |
else |
|
506 |
{ |
|
507 |
*i = mid; |
|
508 |
return true; |
|
509 |
} |
|
510 |
} |
|
511 |
if (max < 0 || (max < (int) this->len && this->array[max].cmp (x) > 0)) |
|
512 |
max++; |
|
513 |
*i = max; |
|
514 |
return false; |
|
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
515 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
516 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
517 |
inline void finish (void) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
518 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
519 |
if (array != static_array) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
520 |
free (array); |
48274 | 521 |
array = nullptr; |
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
522 |
allocated = len = 0; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
523 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
524 |
}; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
525 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
526 |
template <typename Type> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
527 |
struct hb_auto_array_t : hb_prealloced_array_t <Type> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
528 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
529 |
hb_auto_array_t (void) { hb_prealloced_array_t<Type>::init (); } |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
530 |
~hb_auto_array_t (void) { hb_prealloced_array_t<Type>::finish (); } |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
531 |
}; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
532 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
533 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
534 |
#define HB_LOCKABLE_SET_INIT {HB_PREALLOCED_ARRAY_INIT} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
535 |
template <typename item_t, typename lock_t> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
536 |
struct hb_lockable_set_t |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
537 |
{ |
48274 | 538 |
hb_prealloced_array_t <item_t, 1> items; |
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
539 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
540 |
inline void init (void) { items.init (); } |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
541 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
542 |
template <typename T> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
543 |
inline item_t *replace_or_insert (T v, lock_t &l, bool replace) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
544 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
545 |
l.lock (); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
546 |
item_t *item = items.find (v); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
547 |
if (item) { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
548 |
if (replace) { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
549 |
item_t old = *item; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
550 |
*item = v; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
551 |
l.unlock (); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
552 |
old.finish (); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
553 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
554 |
else { |
48274 | 555 |
item = nullptr; |
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
556 |
l.unlock (); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
557 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
558 |
} else { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
559 |
item = items.push (); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
560 |
if (likely (item)) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
561 |
*item = v; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
562 |
l.unlock (); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
563 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
564 |
return item; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
565 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
566 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
567 |
template <typename T> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
568 |
inline void remove (T v, lock_t &l) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
569 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
570 |
l.lock (); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
571 |
item_t *item = items.find (v); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
572 |
if (item) { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
573 |
item_t old = *item; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
574 |
*item = items[items.len - 1]; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
575 |
items.pop (); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
576 |
l.unlock (); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
577 |
old.finish (); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
578 |
} else { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
579 |
l.unlock (); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
580 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
581 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
582 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
583 |
template <typename T> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
584 |
inline bool find (T v, item_t *i, lock_t &l) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
585 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
586 |
l.lock (); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
587 |
item_t *item = items.find (v); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
588 |
if (item) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
589 |
*i = *item; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
590 |
l.unlock (); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
591 |
return !!item; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
592 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
593 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
594 |
template <typename T> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
595 |
inline item_t *find_or_insert (T v, lock_t &l) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
596 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
597 |
l.lock (); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
598 |
item_t *item = items.find (v); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
599 |
if (!item) { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
600 |
item = items.push (); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
601 |
if (likely (item)) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
602 |
*item = v; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
603 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
604 |
l.unlock (); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
605 |
return item; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
606 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
607 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
608 |
inline void finish (lock_t &l) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
609 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
610 |
if (!items.len) { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
611 |
/* No need for locking. */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
612 |
items.finish (); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
613 |
return; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
614 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
615 |
l.lock (); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
616 |
while (items.len) { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
617 |
item_t old = items[items.len - 1]; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
618 |
items.pop (); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
619 |
l.unlock (); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
620 |
old.finish (); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
621 |
l.lock (); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
622 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
623 |
items.finish (); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
624 |
l.unlock (); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
625 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
626 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
627 |
}; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
628 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
629 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
630 |
/* ASCII tag/character handling */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
631 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
632 |
static inline bool ISALPHA (unsigned char c) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
633 |
{ return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z'); } |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
634 |
static inline bool ISALNUM (unsigned char c) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
635 |
{ return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || (c >= '0' && c <= '9'); } |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
636 |
static inline bool ISSPACE (unsigned char c) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
637 |
{ return c == ' ' || c =='\f'|| c =='\n'|| c =='\r'|| c =='\t'|| c =='\v'; } |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
638 |
static inline unsigned char TOUPPER (unsigned char c) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
639 |
{ return (c >= 'a' && c <= 'z') ? c - 'a' + 'A' : c; } |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
640 |
static inline unsigned char TOLOWER (unsigned char c) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
641 |
{ return (c >= 'A' && c <= 'Z') ? c - 'A' + 'a' : c; } |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
642 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
643 |
|
40435 | 644 |
/* HB_NDEBUG disables some sanity checks that are very safe to disable and |
645 |
* should be disabled in production systems. If NDEBUG is defined, enable |
|
646 |
* HB_NDEBUG; but if it's desirable that normal assert()s (which are very |
|
647 |
* light-weight) to be enabled, then HB_DEBUG can be defined to disable |
|
648 |
* the costlier checks. */ |
|
649 |
#ifdef NDEBUG |
|
650 |
#define HB_NDEBUG |
|
651 |
#endif |
|
652 |
||
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
653 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
654 |
/* Misc */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
655 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
656 |
template <typename T> class hb_assert_unsigned_t; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
657 |
template <> class hb_assert_unsigned_t<unsigned char> {}; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
658 |
template <> class hb_assert_unsigned_t<unsigned short> {}; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
659 |
template <> class hb_assert_unsigned_t<unsigned int> {}; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
660 |
template <> class hb_assert_unsigned_t<unsigned long> {}; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
661 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
662 |
template <typename T> static inline bool |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
663 |
hb_in_range (T u, T lo, T hi) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
664 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
665 |
/* The sizeof() is here to force template instantiation. |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
666 |
* I'm sure there are better ways to do this but can't think of |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
667 |
* one right now. Declaring a variable won't work as HB_UNUSED |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
668 |
* is unusable on some platforms and unused types are less likely |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
669 |
* to generate a warning than unused variables. */ |
48274 | 670 |
static_assert ((sizeof (hb_assert_unsigned_t<T>) >= 0), ""); |
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
671 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
672 |
/* The casts below are important as if T is smaller than int, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
673 |
* the subtract results will become a signed int! */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
674 |
return (T)(u - lo) <= (T)(hi - lo); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
675 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
676 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
677 |
template <typename T> static inline bool |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
678 |
hb_in_ranges (T u, T lo1, T hi1, T lo2, T hi2) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
679 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
680 |
return hb_in_range (u, lo1, hi1) || hb_in_range (u, lo2, hi2); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
681 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
682 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
683 |
template <typename T> static inline bool |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
684 |
hb_in_ranges (T u, T lo1, T hi1, T lo2, T hi2, T lo3, T hi3) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
685 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
686 |
return hb_in_range (u, lo1, hi1) || hb_in_range (u, lo2, hi2) || hb_in_range (u, lo3, hi3); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
687 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
688 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
689 |
|
40435 | 690 |
/* Enable bitwise ops on enums marked as flags_t */ |
691 |
/* To my surprise, looks like the function resolver is happy to silently cast |
|
692 |
* one enum to another... So this doesn't provide the type-checking that I |
|
693 |
* originally had in mind... :(. |
|
694 |
* |
|
695 |
* For MSVC warnings, see: https://github.com/behdad/harfbuzz/pull/163 |
|
696 |
*/ |
|
697 |
#ifdef _MSC_VER |
|
698 |
# pragma warning(disable:4200) |
|
699 |
# pragma warning(disable:4800) |
|
700 |
#endif |
|
701 |
#define HB_MARK_AS_FLAG_T(T) \ |
|
702 |
extern "C++" { \ |
|
703 |
static inline T operator | (T l, T r) { return T ((unsigned) l | (unsigned) r); } \ |
|
704 |
static inline T operator & (T l, T r) { return T ((unsigned) l & (unsigned) r); } \ |
|
705 |
static inline T operator ^ (T l, T r) { return T ((unsigned) l ^ (unsigned) r); } \ |
|
706 |
static inline T operator ~ (T r) { return T (~(unsigned int) r); } \ |
|
707 |
static inline T& operator |= (T &l, T r) { l = l | r; return l; } \ |
|
708 |
static inline T& operator &= (T& l, T r) { l = l & r; return l; } \ |
|
709 |
static inline T& operator ^= (T& l, T r) { l = l ^ r; return l; } \ |
|
710 |
} |
|
711 |
||
712 |
||
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
713 |
/* Useful for set-operations on small enums. |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
714 |
* For example, for testing "x ∈ {x1, x2, x3}" use: |
48274 | 715 |
* (FLAG_UNSAFE(x) & (FLAG(x1) | FLAG(x2) | FLAG(x3))) |
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
716 |
*/ |
48274 | 717 |
#define FLAG(x) (ASSERT_STATIC_EXPR_ZERO ((unsigned int)(x) < 32) + (1U << (unsigned int)(x))) |
718 |
#define FLAG_UNSAFE(x) ((unsigned int)(x) < 32 ? (1U << (unsigned int)(x)) : 0) |
|
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
719 |
#define FLAG_RANGE(x,y) (ASSERT_STATIC_EXPR_ZERO ((x) < (y)) + FLAG(y+1) - FLAG(x)) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
720 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
721 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
722 |
template <typename T, typename T2> static inline void |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
723 |
hb_stable_sort (T *array, unsigned int len, int(*compar)(const T *, const T *), T2 *array2) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
724 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
725 |
for (unsigned int i = 1; i < len; i++) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
726 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
727 |
unsigned int j = i; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
728 |
while (j && compar (&array[j - 1], &array[i]) > 0) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
729 |
j--; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
730 |
if (i == j) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
731 |
continue; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
732 |
/* Move item i to occupy place for item j, shift what's in between. */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
733 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
734 |
T t = array[i]; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
735 |
memmove (&array[j + 1], &array[j], (i - j) * sizeof (T)); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
736 |
array[j] = t; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
737 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
738 |
if (array2) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
739 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
740 |
T2 t = array2[i]; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
741 |
memmove (&array2[j + 1], &array2[j], (i - j) * sizeof (T2)); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
742 |
array2[j] = t; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
743 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
744 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
745 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
746 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
747 |
template <typename T> static inline void |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
748 |
hb_stable_sort (T *array, unsigned int len, int(*compar)(const T *, const T *)) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
749 |
{ |
48274 | 750 |
hb_stable_sort (array, len, compar, (int *) nullptr); |
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
751 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
752 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
753 |
static inline hb_bool_t |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
754 |
hb_codepoint_parse (const char *s, unsigned int len, int base, hb_codepoint_t *out) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
755 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
756 |
/* Pain because we don't know whether s is nul-terminated. */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
757 |
char buf[64]; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
758 |
len = MIN (ARRAY_LENGTH (buf) - 1, len); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
759 |
strncpy (buf, s, len); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
760 |
buf[len] = '\0'; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
761 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
762 |
char *end; |
e496a8d8fc8a
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|
763 |
errno = 0; |
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|
764 |
unsigned long v = strtoul (buf, &end, base); |
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|
765 |
if (errno) return false; |
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|
766 |
if (*end) return false; |
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|
767 |
*out = v; |
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|
768 |
return true; |
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|
769 |
} |
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|
770 |
|
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|
771 |
|
48274 | 772 |
/* Vectorization */ |
773 |
||
774 |
struct HbOpOr |
|
775 |
{ |
|
776 |
static const bool passthru_left = true; |
|
777 |
static const bool passthru_right = true; |
|
778 |
template <typename T> static void process (T &o, const T &a, const T &b) { o = a | b; } |
|
779 |
}; |
|
780 |
struct HbOpAnd |
|
781 |
{ |
|
782 |
static const bool passthru_left = false; |
|
783 |
static const bool passthru_right = false; |
|
784 |
template <typename T> static void process (T &o, const T &a, const T &b) { o = a & b; } |
|
785 |
}; |
|
786 |
struct HbOpMinus |
|
787 |
{ |
|
788 |
static const bool passthru_left = true; |
|
789 |
static const bool passthru_right = false; |
|
790 |
template <typename T> static void process (T &o, const T &a, const T &b) { o = a & ~b; } |
|
791 |
}; |
|
792 |
struct HbOpXor |
|
793 |
{ |
|
794 |
static const bool passthru_left = true; |
|
795 |
static const bool passthru_right = true; |
|
796 |
template <typename T> static void process (T &o, const T &a, const T &b) { o = a ^ b; } |
|
797 |
}; |
|
798 |
||
799 |
/* Type behaving similar to vectorized vars defined using __attribute__((vector_size(...))). */ |
|
800 |
template <typename elt_t, unsigned int byte_size> |
|
801 |
struct hb_vector_size_t |
|
802 |
{ |
|
803 |
elt_t& operator [] (unsigned int i) { return v[i]; } |
|
804 |
const elt_t& operator [] (unsigned int i) const { return v[i]; } |
|
805 |
||
806 |
template <class Op> |
|
807 |
inline hb_vector_size_t process (const hb_vector_size_t &o) const |
|
808 |
{ |
|
809 |
hb_vector_size_t r; |
|
810 |
for (unsigned int i = 0; i < ARRAY_LENGTH (v); i++) |
|
811 |
Op::process (r.v[i], v[i], o.v[i]); |
|
812 |
return r; |
|
813 |
} |
|
814 |
inline hb_vector_size_t operator | (const hb_vector_size_t &o) const |
|
815 |
{ return process<HbOpOr> (o); } |
|
816 |
inline hb_vector_size_t operator & (const hb_vector_size_t &o) const |
|
817 |
{ return process<HbOpAnd> (o); } |
|
818 |
inline hb_vector_size_t operator ^ (const hb_vector_size_t &o) const |
|
819 |
{ return process<HbOpXor> (o); } |
|
820 |
inline hb_vector_size_t operator ~ () const |
|
821 |
{ |
|
822 |
hb_vector_size_t r; |
|
823 |
for (unsigned int i = 0; i < ARRAY_LENGTH (v); i++) |
|
824 |
r.v[i] = ~v[i]; |
|
825 |
return r; |
|
826 |
} |
|
827 |
||
828 |
private: |
|
829 |
static_assert (byte_size / sizeof (elt_t) * sizeof (elt_t) == byte_size, ""); |
|
830 |
elt_t v[byte_size / sizeof (elt_t)]; |
|
831 |
}; |
|
832 |
||
833 |
/* The `vector_size' attribute was introduced in gcc 3.1. */ |
|
834 |
#if defined( __GNUC__ ) && ( __GNUC__ >= 4 ) |
|
835 |
#define HAVE_VECTOR_SIZE 1 |
|
836 |
#endif |
|
837 |
||
838 |
||
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|
839 |
/* Global runtime options. */ |
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|
840 |
|
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|
841 |
struct hb_options_t |
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|
842 |
{ |
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parents:
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changeset
|
843 |
unsigned int initialized : 1; |
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parents:
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changeset
|
844 |
unsigned int uniscribe_bug_compatible : 1; |
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parents:
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|
845 |
}; |
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|
846 |
|
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|
847 |
union hb_options_union_t { |
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parents:
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|
848 |
unsigned int i; |
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|
849 |
hb_options_t opts; |
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changeset
|
850 |
}; |
48274 | 851 |
static_assert ((sizeof (int) == sizeof (hb_options_union_t)), ""); |
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|
852 |
|
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|
853 |
HB_INTERNAL void |
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|
854 |
_hb_options_init (void); |
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|
855 |
|
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|
856 |
extern HB_INTERNAL hb_options_union_t _hb_options; |
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|
857 |
|
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changeset
|
858 |
static inline hb_options_t |
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|
859 |
hb_options (void) |
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parents:
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|
860 |
{ |
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parents:
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changeset
|
861 |
if (unlikely (!_hb_options.i)) |
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|
862 |
_hb_options_init (); |
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parents:
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changeset
|
863 |
|
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parents:
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changeset
|
864 |
return _hb_options.opts; |
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parents:
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changeset
|
865 |
} |
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|
866 |
|
40435 | 867 |
/* Size signifying variable-sized array */ |
868 |
#define VAR 1 |
|
34414
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|
869 |
|
48274 | 870 |
|
871 |
/* String type. */ |
|
872 |
||
873 |
struct hb_string_t |
|
874 |
{ |
|
875 |
inline hb_string_t (void) : bytes (nullptr), len (0) {} |
|
876 |
inline hb_string_t (const char *bytes_, unsigned int len_) : bytes (bytes_), len (len_) {} |
|
877 |
||
878 |
inline int cmp (const hb_string_t &a) const |
|
879 |
{ |
|
880 |
if (len != a.len) |
|
881 |
return (int) a.len - (int) len; |
|
882 |
||
883 |
return memcmp (a.bytes, bytes, len); |
|
884 |
} |
|
885 |
static inline int cmp (const void *pa, const void *pb) |
|
886 |
{ |
|
887 |
hb_string_t *a = (hb_string_t *) pa; |
|
888 |
hb_string_t *b = (hb_string_t *) pb; |
|
889 |
return b->cmp (*a); |
|
890 |
} |
|
891 |
||
892 |
const char *bytes; |
|
893 |
unsigned int len; |
|
894 |
}; |
|
895 |
||
896 |
||
34414
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|
897 |
#endif /* HB_PRIVATE_HH */ |