/* * Copyright (C) 2019 Sony Interactive Entertainment Inc. * * 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. * * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS 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 APPLE INC. OR ITS 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. */ #pragma once #include <wtf/HashTraits.h> #include <wtf/OptionSet.h> namespace WTF { template<typename T> struct DefaultHash<OptionSet<T>> { static unsigned hash(OptionSet<T> key) { return IntHash<typename OptionSet<T>::StorageType>::hash(key.toRaw()); } static bool equal(OptionSet<T> a, OptionSet<T> b) { return a == b; } static constexpr bool safeToCompareToEmptyOrDeleted = true; }; template<typename T> struct HashTraits<OptionSet<T>> : GenericHashTraits<OptionSet<T>> { using StorageTraits = UnsignedWithZeroKeyHashTraits<typename OptionSet<T>::StorageType>; static OptionSet<T> emptyValue() { return OptionSet<T>::fromRaw(StorageTraits::emptyValue()); } static void constructDeletedValue(OptionSet<T>& slot) { typename OptionSet<T>::StorageType storage; StorageTraits::constructDeletedValue(storage); slot = OptionSet<T>::fromRaw(storage); } static bool isDeletedValue(OptionSet<T> value) { return StorageTraits::isDeletedValue(value.toRaw()); } }; } // namespace WTF