/* * Copyright (C) 2014 Apple 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. * * THIS SOFTWARE IS PROVIDED BY APPLE 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 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. */ #ifndef FloatSizeHash_h #define FloatSizeHash_h #include "FloatSize.h" #include <wtf/HashMap.h> #include <wtf/HashSet.h> namespace WTF { template<> struct FloatHash<WebCore::FloatSize> { static unsigned hash(const WebCore::FloatSize& key) { return pairIntHash(DefaultHash<float>::Hash::hash(key.width()), DefaultHash<float>::Hash::hash(key.height())); } static bool equal(const WebCore::FloatSize& a, const WebCore::FloatSize& b) { return a == b; } static const bool safeToCompareToEmptyOrDeleted = true; }; template<> struct DefaultHash<WebCore::FloatSize> { typedef FloatHash<WebCore::FloatSize> Hash; }; template<> struct HashTraits<WebCore::FloatSize> : GenericHashTraits<WebCore::FloatSize> { static const bool emptyValueIsZero = true; static const bool needsDestruction = false; static void constructDeletedValue(WebCore::FloatSize& slot) { new (NotNull, &slot) WebCore::FloatSize(-1, -1); } static bool isDeletedValue(const WebCore::FloatSize& value) { return value.width() == -1 && value.height() == -1; } }; } // namespace WTF #endif