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
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
|
/*
* Copyright (C) 2007-2014 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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*
*/
#pragma once
#include <wtf/MainThread.h>
#include <wtf/text/AtomString.h>
namespace WebCore {
class SpaceSplitStringData {
WTF_MAKE_NONCOPYABLE(SpaceSplitStringData);
WTF_MAKE_FAST_ALLOCATED;
public:
static RefPtr<SpaceSplitStringData> create(const AtomString&);
bool contains(const AtomString& string)
{
const AtomString* data = tokenArrayStart();
unsigned i = 0;
do {
if (data[i] == string)
return true;
++i;
} while (i < m_size);
return false;
}
bool containsAll(SpaceSplitStringData&);
unsigned size() const { return m_size; }
static ptrdiff_t sizeMemoryOffset() { return OBJECT_OFFSETOF(SpaceSplitStringData, m_size); }
const AtomString& operator[](unsigned i)
{
RELEASE_ASSERT(i < m_size);
return tokenArrayStart()[i];
}
void ref()
{
ASSERT(isMainThread());
ASSERT(m_refCount);
++m_refCount;
}
void deref()
{
ASSERT(isMainThread());
ASSERT(m_refCount);
unsigned tempRefCount = m_refCount - 1;
if (!tempRefCount) {
destroy(this);
return;
}
m_refCount = tempRefCount;
}
static ptrdiff_t tokensMemoryOffset() { return sizeof(SpaceSplitStringData); }
private:
static Ref<SpaceSplitStringData> create(const AtomString&, unsigned tokenCount);
SpaceSplitStringData(const AtomString& string, unsigned size)
: m_keyString(string)
, m_refCount(1)
, m_size(size)
{
ASSERT(!string.isEmpty());
ASSERT_WITH_MESSAGE(m_size, "SpaceSplitStringData should never be empty by definition. There is no difference between empty and null.");
}
~SpaceSplitStringData() = default;
static void destroy(SpaceSplitStringData*);
AtomString* tokenArrayStart() { return reinterpret_cast<AtomString*>(this + 1); }
AtomString m_keyString;
unsigned m_refCount;
unsigned m_size;
};
class SpaceSplitString {
public:
SpaceSplitString() = default;
enum class ShouldFoldCase : bool { No, Yes };
SpaceSplitString(const AtomString& string, ShouldFoldCase shouldFoldCase) { set(string, shouldFoldCase); }
bool operator!=(const SpaceSplitString& other) const { return m_data != other.m_data; }
void set(const AtomString&, ShouldFoldCase);
void clear() { m_data = nullptr; }
bool contains(const AtomString& string) const { return m_data && m_data->contains(string); }
bool containsAll(const SpaceSplitString& names) const { return !names.m_data || (m_data && m_data->containsAll(*names.m_data)); }
unsigned size() const { return m_data ? m_data->size() : 0; }
bool isEmpty() const { return !m_data; }
const AtomString& operator[](unsigned i) const
{
ASSERT_WITH_SECURITY_IMPLICATION(m_data);
return (*m_data)[i];
}
static bool spaceSplitStringContainsValue(StringView spaceSplitString, StringView value, ShouldFoldCase);
private:
RefPtr<SpaceSplitStringData> m_data;
};
} // namespace WebCore
|
