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47 lines
1.7 KiB
C++
47 lines
1.7 KiB
C++
/*
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* Copyright (C) 2006 Apple Computer, Inc.
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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/HashMap.h>
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#include <wtf/HashSet.h>
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using WebCore::IntSize;
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namespace WTF {
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template<> struct IntHash<IntSize> {
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static unsigned hash(const IntSize& key) { return intHash((static_cast<uint64_t>(key.width()) << 32 | key.height())); }
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static bool equal(const IntSize& a, const 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<IntSize> { typedef IntHash<IntSize> Hash; };
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template<> struct HashTraits<IntSize> : GenericHashTraits<IntSize> {
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static const bool emptyValueIsZero = true;
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static const bool needsDestruction = false;
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static const bool needsRef = false;
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static IntSize deletedValue() { return IntSize(-1, -1); }
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};
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} // namespace WTF
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#endif
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