2 * Copyright (C) 2006, 2008 Apple Inc. All rights reserved.
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Library General Public License for more details.
14 * You should have received a copy of the GNU Library General Public License
15 * along with this library; see the file COPYING.LIB. If not, write to
16 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
17 * Boston, MA 02110-1301, USA.
24 #include <wtf/HashMap.h>
25 #include <wtf/HashSet.h>
29 template<> struct IntHash<WebCore::IntSize> {
30 static unsigned hash(const WebCore::IntSize& key) { return intHash((static_cast<uint64_t>(key.width()) << 32 | key.height())); }
31 static bool equal(const WebCore::IntSize& a, const WebCore::IntSize& b) { return a == b; }
32 static const bool safeToCompareToEmptyOrDeleted = true;
34 template<> struct DefaultHash<WebCore::IntSize> { typedef IntHash<WebCore::IntSize> Hash; };
36 template<> struct HashTraits<WebCore::IntSize> : GenericHashTraits<WebCore::IntSize> {
37 static const bool emptyValueIsZero = true;
38 static const bool needsDestruction = false;
39 static void constructDeletedValue(WebCore::IntSize& slot) { new (NotNull, &slot) WebCore::IntSize(-1, -1); }
40 static bool isDeletedValue(const WebCore::IntSize& value) { return value.width() == -1 && value.height() == -1; }