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
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
|
/*
* Copyright (C) 2009 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "IdentifierRep.h"
#include "JSDOMBinding.h"
#include "PlatformString.h"
#include <runtime/UString.h>
#include <wtf/HashMap.h>
#include <wtf/StdLibExtras.h>
using namespace JSC;
namespace WebCore {
typedef HashSet<IdentifierRep*> IdentifierSet;
static IdentifierSet& identifierSet()
{
DEFINE_STATIC_LOCAL(IdentifierSet, identifierSet, ());
return identifierSet;
}
typedef HashMap<int, IdentifierRep*> IntIdentifierMap;
static IntIdentifierMap& intIdentifierMap()
{
DEFINE_STATIC_LOCAL(IntIdentifierMap, intIdentifierMap, ());
return intIdentifierMap;
}
IdentifierRep* IdentifierRep::get(int intID)
{
if (intID == 0 || intID == -1) {
static IdentifierRep* negativeOneAndZeroIdentifiers[2];
IdentifierRep* identifier = negativeOneAndZeroIdentifiers[intID + 1];
if (!identifier) {
identifier = new IdentifierRep(intID);
negativeOneAndZeroIdentifiers[intID + 1] = identifier;
}
return identifier;
}
pair<IntIdentifierMap::iterator, bool> result = intIdentifierMap().add(intID, 0);
if (result.second) {
ASSERT(!result.first->second);
result.first->second = new IdentifierRep(intID);
identifierSet().add(result.first->second);
}
return result.first->second;
}
typedef HashMap<RefPtr<JSC::UString::Rep>, IdentifierRep*> StringIdentifierMap;
static StringIdentifierMap& stringIdentifierMap()
{
DEFINE_STATIC_LOCAL(StringIdentifierMap, stringIdentifierMap, ());
return stringIdentifierMap;
}
IdentifierRep* IdentifierRep::get(const char* name)
{
ASSERT(name);
if (!name)
return 0;
UString string = stringToUString(String::fromUTF8WithLatin1Fallback(name, strlen(name)));
pair<StringIdentifierMap::iterator, bool> result = stringIdentifierMap().add(string.rep(), 0);
if (result.second) {
ASSERT(!result.first->second);
result.first->second = new IdentifierRep(name);
identifierSet().add(result.first->second);
}
return result.first->second;
}
bool IdentifierRep::isValid(IdentifierRep* identifier)
{
return identifierSet().contains(identifier);
}
} // namespace WebCore
|
