1/*
2 * Copyright (C) 2007 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 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#ifndef WTF_HashIterators_h
27#define WTF_HashIterators_h
28
29namespace WTF {
30
31 template<typename HashTableType, typename KeyType, typename MappedType> struct HashTableConstKeysIterator;
32 template<typename HashTableType, typename KeyType, typename MappedType> struct HashTableConstValuesIterator;
33 template<typename HashTableType, typename KeyType, typename MappedType> struct HashTableKeysIterator;
34 template<typename HashTableType, typename KeyType, typename MappedType> struct HashTableValuesIterator;
35
36 template<typename HashTableType, typename KeyType, typename MappedType> struct HashTableConstIteratorAdapter<HashTableType, std::pair<KeyType, MappedType> > {
37 private:
38 typedef std::pair<KeyType, MappedType> ValueType;
39 public:
40 typedef HashTableConstKeysIterator<HashTableType, KeyType, MappedType> Keys;
41 typedef HashTableConstValuesIterator<HashTableType, KeyType, MappedType> Values;
42
43 HashTableConstIteratorAdapter(const typename HashTableType::const_iterator& impl) : m_impl(impl) {}
44
45 const ValueType* get() const { return (const ValueType*)m_impl.get(); }
46 const ValueType& operator*() const { return *get(); }
47 const ValueType* operator->() const { return get(); }
48
49 HashTableConstIteratorAdapter& operator++() { ++m_impl; return *this; }
50 // postfix ++ intentionally omitted
51
52 Keys keys() { return Keys(*this); }
53 Values values() { return Values(*this); }
54
55 typename HashTableType::const_iterator m_impl;
56 };
57
58 template<typename HashTableType, typename KeyType, typename MappedType> struct HashTableIteratorAdapter<HashTableType, std::pair<KeyType, MappedType> > {
59 private:
60 typedef std::pair<KeyType, MappedType> ValueType;
61 public:
62 typedef HashTableKeysIterator<HashTableType, KeyType, MappedType> Keys;
63 typedef HashTableValuesIterator<HashTableType, KeyType, MappedType> Values;
64
65 HashTableIteratorAdapter(const typename HashTableType::iterator& impl) : m_impl(impl) {}
66
67 ValueType* get() const { return (ValueType*)m_impl.get(); }
68 ValueType& operator*() const { return *get(); }
69 ValueType* operator->() const { return get(); }
70
71 HashTableIteratorAdapter& operator++() { ++m_impl; return *this; }
72 // postfix ++ intentionally omitted
73
74 operator HashTableConstIteratorAdapter<HashTableType, ValueType>() {
75 typename HashTableType::const_iterator i = m_impl;
76 return i;
77 }
78
79 Keys keys() { return Keys(*this); }
80 Values values() { return Values(*this); }
81
82 typename HashTableType::iterator m_impl;
83 };
84
85 template<typename HashTableType, typename KeyType, typename MappedType> struct HashTableConstKeysIterator {
86 private:
87 typedef HashTableConstIteratorAdapter<HashTableType, std::pair<KeyType, MappedType> > ConstIterator;
88
89 public:
90 HashTableConstKeysIterator(const ConstIterator& impl) : m_impl(impl) {}
91
92 const KeyType* get() const { return &(m_impl.get()->first); }
93 const KeyType& operator*() const { return *get(); }
94 const KeyType* operator->() const { return get(); }
95
96 HashTableConstKeysIterator& operator++() { ++m_impl; return *this; }
97 // postfix ++ intentionally omitted
98
99 ConstIterator m_impl;
100 };
101
102 template<typename HashTableType, typename KeyType, typename MappedType> struct HashTableConstValuesIterator {
103 private:
104 typedef HashTableConstIteratorAdapter<HashTableType, std::pair<KeyType, MappedType> > ConstIterator;
105
106 public:
107 HashTableConstValuesIterator(const ConstIterator& impl) : m_impl(impl) {}
108
109 const MappedType* get() const { return &(m_impl.get()->second); }
110 const MappedType& operator*() const { return *get(); }
111 const MappedType* operator->() const { return get(); }
112
113 HashTableConstValuesIterator& operator++() { ++m_impl; return *this; }
114 // postfix ++ intentionally omitted
115
116 ConstIterator m_impl;
117 };
118
119 template<typename HashTableType, typename KeyType, typename MappedType> struct HashTableKeysIterator {
120 private:
121 typedef HashTableIteratorAdapter<HashTableType, std::pair<KeyType, MappedType> > Iterator;
122 typedef HashTableConstIteratorAdapter<HashTableType, std::pair<KeyType, MappedType> > ConstIterator;
123
124 public:
125 HashTableKeysIterator(const Iterator& impl) : m_impl(impl) {}
126
127 KeyType* get() const { return &(m_impl.get()->first); }
128 KeyType& operator*() const { return *get(); }
129 KeyType* operator->() const { return get(); }
130
131 HashTableKeysIterator& operator++() { ++m_impl; return *this; }
132 // postfix ++ intentionally omitted
133
134 operator HashTableConstKeysIterator<HashTableType, KeyType, MappedType>() {
135 ConstIterator i = m_impl;
136 return i;
137 }
138
139 Iterator m_impl;
140 };
141
142 template<typename HashTableType, typename KeyType, typename MappedType> struct HashTableValuesIterator {
143 private:
144 typedef HashTableIteratorAdapter<HashTableType, std::pair<KeyType, MappedType> > Iterator;
145 typedef HashTableConstIteratorAdapter<HashTableType, std::pair<KeyType, MappedType> > ConstIterator;
146
147 public:
148 HashTableValuesIterator(const Iterator& impl) : m_impl(impl) {}
149
150 MappedType* get() const { return &(m_impl.get()->second); }
151 MappedType& operator*() const { return *get(); }
152 MappedType* operator->() const { return get(); }
153
154 HashTableValuesIterator& operator++() { ++m_impl; return *this; }
155 // postfix ++ intentionally omitted
156
157 operator HashTableConstValuesIterator<HashTableType, KeyType, MappedType>() {
158 ConstIterator i = m_impl;
159 return i;
160 }
161
162 Iterator m_impl;
163 };
164
165 template<typename T, typename U, typename V>
166 inline bool operator==(const HashTableConstKeysIterator<T, U, V>& a, const HashTableConstKeysIterator<T, U, V>& b)
167 {
168 return a.m_impl == b.m_impl;
169 }
170
171 template<typename T, typename U, typename V>
172 inline bool operator!=(const HashTableConstKeysIterator<T, U, V>& a, const HashTableConstKeysIterator<T, U, V>& b)
173 {
174 return a.m_impl != b.m_impl;
175 }
176
177 template<typename T, typename U, typename V>
178 inline bool operator==(const HashTableConstValuesIterator<T, U, V>& a, const HashTableConstValuesIterator<T, U, V>& b)
179 {
180 return a.m_impl == b.m_impl;
181 }
182
183 template<typename T, typename U, typename V>
184 inline bool operator!=(const HashTableConstValuesIterator<T, U, V>& a, const HashTableConstValuesIterator<T, U, V>& b)
185 {
186 return a.m_impl != b.m_impl;
187 }
188
189 template<typename T, typename U, typename V>
190 inline bool operator==(const HashTableKeysIterator<T, U, V>& a, const HashTableKeysIterator<T, U, V>& b)
191 {
192 return a.m_impl == b.m_impl;
193 }
194
195 template<typename T, typename U, typename V>
196 inline bool operator!=(const HashTableKeysIterator<T, U, V>& a, const HashTableKeysIterator<T, U, V>& b)
197 {
198 return a.m_impl != b.m_impl;
199 }
200
201 template<typename T, typename U, typename V>
202 inline bool operator==(const HashTableValuesIterator<T, U, V>& a, const HashTableValuesIterator<T, U, V>& b)
203 {
204 return a.m_impl == b.m_impl;
205 }
206
207 template<typename T, typename U, typename V>
208 inline bool operator!=(const HashTableValuesIterator<T, U, V>& a, const HashTableValuesIterator<T, U, V>& b)
209 {
210 return a.m_impl != b.m_impl;
211 }
212
213
214} // namespace WTF
215
216#endif // WTF_HashIterators_h
217

source code of qtscript/src/3rdparty/javascriptcore/JavaScriptCore/wtf/HashIterators.h