1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
|
/*
* Copyright (C) 2006, 2008 Apple Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#ifndef IntSizeHash_h
#define IntSizeHash_h
#include "platform/geometry/IntSize.h"
#include "wtf/HashMap.h"
#include "wtf/HashSet.h"
namespace WTF {
template<> struct IntHash<blink::IntSize> {
static unsigned hash(const blink::IntSize& key) { return pairIntHash(key.width(), key.height()); }
static bool equal(const blink::IntSize& a, const blink::IntSize& b) { return a == b; }
static const bool safeToCompareToEmptyOrDeleted = true;
};
template<> struct DefaultHash<blink::IntSize> {
typedef IntHash<blink::IntSize> Hash;
};
template<> struct HashTraits<blink::IntSize> : GenericHashTraits<blink::IntSize> {
static const bool emptyValueIsZero = true;
static const bool needsDestruction = false;
static void constructDeletedValue(blink::IntSize& slot, bool) { new (NotNull, &slot) blink::IntSize(-1, -1); }
static bool isDeletedValue(const blink::IntSize& value) { return value.width() == -1 && value.height() == -1; }
};
} // namespace WTF
#endif
|
