43 lines
1.7 KiB
C++
43 lines
1.7 KiB
C++
/*
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* Copyright (C) 2006, 2008 Apple Inc. All rights reserved.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public License
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* along with this library; see the file COPYING.LIB. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*
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*/
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#ifndef IntSizeHash_h
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#define IntSizeHash_h
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#include "IntSize.h"
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#include <wtf/HashTraits.h>
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namespace WTF {
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template<> struct IntHash<WebCore::IntSize> {
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static unsigned hash(const WebCore::IntSize& key) { return pairIntHash(key.width(), key.height()); }
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static bool equal(const WebCore::IntSize& a, const WebCore::IntSize& b) { return a == b; }
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static const bool safeToCompareToEmptyOrDeleted = true;
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};
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template<> struct DefaultHash<WebCore::IntSize> : IntHash<WebCore::IntSize> { };
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template<> struct HashTraits<WebCore::IntSize> : GenericHashTraits<WebCore::IntSize> {
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static const bool emptyValueIsZero = true;
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static void constructDeletedValue(WebCore::IntSize& slot) { new (NotNull, &slot) WebCore::IntSize(-1, -1); }
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static bool isDeletedValue(const WebCore::IntSize& value) { return value.width() == -1 && value.height() == -1; }
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};
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} // namespace WTF
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#endif
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