/* * Copyright (C) 2013 Google Inc. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer * in the documentation and/or other materials provided with the * distribution. * 3. Neither the name of Google Inc. nor the names of its contributors * may be used to endorse or promote products derived from this * software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #ifndef THIRD_PARTY_BLINK_RENDERER_PLATFORM_FONTS_FONT_CACHE_KEY_H_ #define THIRD_PARTY_BLINK_RENDERER_PLATFORM_FONTS_FONT_CACHE_KEY_H_ #include <limits> #include "base/memory/values_equivalent.h" #include "base/numerics/safe_conversions.h" #include "build/build_config.h" #include "third_party/blink/renderer/platform/fonts/font_face_creation_params.h" #include "third_party/blink/renderer/platform/fonts/font_palette.h" #include "third_party/blink/renderer/platform/fonts/font_size_adjust.h" #include "third_party/blink/renderer/platform/fonts/font_variant_alternates.h" #include "third_party/blink/renderer/platform/fonts/opentype/font_settings.h" #include "third_party/blink/renderer/platform/wtf/allocator/allocator.h" #include "third_party/blink/renderer/platform/wtf/hash_table_deleted_value_type.h" #include "third_party/blink/renderer/platform/wtf/text/atomic_string_hash.h" #include "third_party/blink/renderer/platform/wtf/text/string_hash.h" namespace blink { // Multiplying the floating point size by 100 gives two decimal point // precision which should be sufficient. static constexpr unsigned kFontSizePrecisionMultiplier = …; struct FontCacheKey { … }; } // namespace blink namespace WTF { template <> struct HashTraits<blink::FontCacheKey> : WTF::SimpleClassHashTraits<blink::FontCacheKey> { … }; // `FontCacheKey` contains an `std::string` (via `FontFaceCreationParams`) // which contains poisoned metadata for detecting buffer overflows in short // strings. Copying this string as part of `KeyValuePairExtractor` will thus // trigger ASAN warnings. static_assert …; } // namespace WTF template <> struct std::hash<blink::FontCacheKey> { … }; #endif // THIRD_PARTY_BLINK_RENDERER_PLATFORM_FONTS_FONT_CACHE_KEY_H_
Codebase Browser
chromium