1/*
2 * Copyright (C) 2014 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
16 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
17 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
18 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
19 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
20 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
21 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#ifndef FloatSizeHash_h
27#define FloatSizeHash_h
28
29#include "FloatSize.h"
30#include <wtf/HashSet.h>
31
32namespace WTF {
33
34template<> struct FloatHash<WebCore::FloatSize> {
35 static unsigned hash(const WebCore::FloatSize& key) { return pairIntHash(DefaultHash<float>::Hash::hash(key.width()), DefaultHash<float>::Hash::hash(key.height())); }
36 static bool equal(const WebCore::FloatSize& a, const WebCore::FloatSize& b) { return a == b; }
37 static const bool safeToCompareToEmptyOrDeleted = true;
38};
39
40template<> struct DefaultHash<WebCore::FloatSize> {
41 typedef FloatHash<WebCore::FloatSize> Hash;
42};
43
44template<> struct HashTraits<WebCore::FloatSize> : GenericHashTraits<WebCore::FloatSize> {
45 static const bool emptyValueIsZero = true;
46 static void constructDeletedValue(WebCore::FloatSize& slot) { new (NotNull, &slot) WebCore::FloatSize(-1, -1); }
47 static bool isDeletedValue(const WebCore::FloatSize& value) { return value.width() == -1 && value.height() == -1; }
48};
49
50} // namespace WTF
51
52#endif
53