/* * Copyright (C) 2011 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 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. */ #ifndef IntRectHash_h #define IntRectHash_h #include "IntPointHash.h" #include "IntRect.h" #include "IntSizeHash.h" #include <wtf/HashMap.h> #include <wtf/HashSet.h> namespace WTF { template<> struct IntHash<WebCore::IntRect> { static unsigned hash(const WebCore::IntRect& key) { return intHash(static_cast<uint64_t>(DefaultHash<WebCore::IntPoint>::Hash::hash(key.location())) << 32 | DefaultHash<WebCore::IntSize>::Hash::hash(key.size())); } static bool equal(const WebCore::IntRect& a, const WebCore::IntRect& b) { return DefaultHash<WebCore::IntPoint>::Hash::equal(a.location(), b.location()) && DefaultHash<WebCore::IntSize>::Hash::equal(a.size(), b.size()); } static const bool safeToCompareToEmptyOrDeleted = true; }; template<> struct DefaultHash<WebCore::IntRect> { typedef IntHash<WebCore::IntRect> Hash; }; template<> struct HashTraits<WebCore::IntRect> : GenericHashTraits<WebCore::IntRect> { static const bool emptyValueIsZero = true; static const bool needsDestruction = false; static void constructDeletedValue(WebCore::IntRect& slot) { new (NotNull, &slot) WebCore::IntRect(-1, -1, -1, -1); } static bool isDeletedValue(const WebCore::IntRect& value) { return value.x() == -1 && value.y() == -1 && value.width() == -1 && value.height() == -1; } }; } #endif