Source/WTF/wtf/HashIterators.h - Issue 14238015: Move Source/WTF/wtf to Source/wtf

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Issue 14238015: Move Source/WTF/wtf to Source/wtf (Closed) Base URL: svn://svn.chromium.org/blink/trunk

Patch Set: Created 7 years, 8 months ago

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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

29 namespace WTF {

30

31 template<typename HashTableType, typename KeyType, typename MappedType> stru ct HashTableConstKeysIterator;

32 template<typename HashTableType, typename KeyType, typename MappedType> stru ct HashTableConstValuesIterator;

33 template<typename HashTableType, typename KeyType, typename MappedType> stru ct HashTableKeysIterator;

34 template<typename HashTableType, typename KeyType, typename MappedType> stru ct HashTableValuesIterator;

35

36 template<typename HashTableType, typename KeyType, typename MappedType> stru ct HashTableConstIteratorAdapter<HashTableType, KeyValuePair<KeyType, MappedType > > {

37 private:

38 typedef KeyValuePair<KeyType, MappedType> ValueType;

39 public:

40 typedef HashTableConstKeysIterator<HashTableType, KeyType, MappedType> K eys;

41 typedef HashTableConstValuesIterator<HashTableType, KeyType, MappedType> Values;

42

43 HashTableConstIteratorAdapter() {}

44 HashTableConstIteratorAdapter(const typename HashTableType::const_iterat or& impl) : m_impl(impl) {}

45

46 const ValueType* get() const { return (const ValueType*)m_impl.get(); }

47 const ValueType& operator() const { return get(); }

48 const ValueType* operator->() const { return get(); }

49

50 HashTableConstIteratorAdapter& operator++() { ++m_impl; return *this; }

51 // postfix ++ intentionally omitted

52

53 Keys keys() { return Keys(*this); }

54 Values values() { return Values(*this); }

55

56 typename HashTableType::const_iterator m_impl;

57 };

58

59 template<typename HashTableType, typename KeyType, typename MappedType> stru ct HashTableIteratorAdapter<HashTableType, KeyValuePair<KeyType, MappedType> > {

60 private:

61 typedef KeyValuePair<KeyType, MappedType> ValueType;

62 public:

63 typedef HashTableKeysIterator<HashTableType, KeyType, MappedType> Keys;

64 typedef HashTableValuesIterator<HashTableType, KeyType, MappedType> Valu es;

65

66 HashTableIteratorAdapter() {}

67 HashTableIteratorAdapter(const typename HashTableType::iterator& impl) : m_impl(impl) {}

68

69 ValueType* get() const { return (ValueType*)m_impl.get(); }

70 ValueType& operator() const { return get(); }

71 ValueType* operator->() const { return get(); }

72

73 HashTableIteratorAdapter& operator++() { ++m_impl; return *this; }

74 // postfix ++ intentionally omitted

75

76 operator HashTableConstIteratorAdapter<HashTableType, ValueType>() {

77 typename HashTableType::const_iterator i = m_impl;

78 return i;

79 }

80

81 Keys keys() { return Keys(*this); }

82 Values values() { return Values(*this); }

83

84 typename HashTableType::iterator m_impl;

85 };

86

87 template<typename HashTableType, typename KeyType, typename MappedType> stru ct HashTableConstKeysIterator {

88 private:

89 typedef HashTableConstIteratorAdapter<HashTableType, KeyValuePair<KeyTyp e, MappedType> > ConstIterator;

90

91 public:

92 HashTableConstKeysIterator(const ConstIterator& impl) : m_impl(impl) {}

93

94 const KeyType* get() const { return &(m_impl.get()->key); }

95 const KeyType& operator() const { return get(); }

96 const KeyType* operator->() const { return get(); }

97

98 HashTableConstKeysIterator& operator++() { ++m_impl; return *this; }

99 // postfix ++ intentionally omitted

100

101 ConstIterator m_impl;

102 };

103

104 template<typename HashTableType, typename KeyType, typename MappedType> stru ct HashTableConstValuesIterator {

105 private:

106 typedef HashTableConstIteratorAdapter<HashTableType, KeyValuePair<KeyTyp e, MappedType> > ConstIterator;

107

108 public:

109 HashTableConstValuesIterator(const ConstIterator& impl) : m_impl(impl) { }

110

111 const MappedType* get() const { return &(m_impl.get()->value); }

112 const MappedType& operator() const { return get(); }

113 const MappedType* operator->() const { return get(); }

114

115 HashTableConstValuesIterator& operator++() { ++m_impl; return *this; }

116 // postfix ++ intentionally omitted

117

118 ConstIterator m_impl;

119 };

120

121 template<typename HashTableType, typename KeyType, typename MappedType> stru ct HashTableKeysIterator {

122 private:

123 typedef HashTableIteratorAdapter<HashTableType, KeyValuePair<KeyType, Ma ppedType> > Iterator;

124 typedef HashTableConstIteratorAdapter<HashTableType, KeyValuePair<KeyTyp e, MappedType> > ConstIterator;

125

126 public:

127 HashTableKeysIterator(const Iterator& impl) : m_impl(impl) {}

128

129 KeyType* get() const { return &(m_impl.get()->key); }

130 KeyType& operator() const { return get(); }

131 KeyType* operator->() const { return get(); }

132

133 HashTableKeysIterator& operator++() { ++m_impl; return *this; }

134 // postfix ++ intentionally omitted

135

136 operator HashTableConstKeysIterator<HashTableType, KeyType, MappedType>( ) {

137 ConstIterator i = m_impl;

138 return i;

139 }

140

141 Iterator m_impl;

142 };

143

144 template<typename HashTableType, typename KeyType, typename MappedType> stru ct HashTableValuesIterator {

145 private:

146 typedef HashTableIteratorAdapter<HashTableType, KeyValuePair<KeyType, Ma ppedType> > Iterator;

147 typedef HashTableConstIteratorAdapter<HashTableType, KeyValuePair<KeyTyp e, MappedType> > ConstIterator;

148

149 public:

150 HashTableValuesIterator(const Iterator& impl) : m_impl(impl) {}

151

152 MappedType* get() const { return &(m_impl.get()->value); }

153 MappedType& operator() const { return get(); }

154 MappedType* operator->() const { return get(); }

155

156 HashTableValuesIterator& operator++() { ++m_impl; return *this; }

157 // postfix ++ intentionally omitted

158

159 operator HashTableConstValuesIterator<HashTableType, KeyType, MappedType >() {

160 ConstIterator i = m_impl;

161 return i;

162 }

163

164 Iterator m_impl;

165 };

166

167 template<typename T, typename U, typename V>

168 inline bool operator==(const HashTableConstKeysIterator<T, U, V>& a, con st HashTableConstKeysIterator<T, U, V>& b)

169 {

170 return a.m_impl == b.m_impl;

171 }

172

173 template<typename T, typename U, typename V>

174 inline bool operator!=(const HashTableConstKeysIterator<T, U, V>& a, con st HashTableConstKeysIterator<T, U, V>& b)

175 {

176 return a.m_impl != b.m_impl;

177 }

178

179 template<typename T, typename U, typename V>

180 inline bool operator==(const HashTableConstValuesIterator<T, U, V>& a, c onst HashTableConstValuesIterator<T, U, V>& b)

181 {

182 return a.m_impl == b.m_impl;

183 }

184

185 template<typename T, typename U, typename V>

186 inline bool operator!=(const HashTableConstValuesIterator<T, U, V>& a, c onst HashTableConstValuesIterator<T, U, V>& b)

187 {

188 return a.m_impl != b.m_impl;

189 }

190

191 template<typename T, typename U, typename V>

192 inline bool operator==(const HashTableKeysIterator<T, U, V>& a, const Ha shTableKeysIterator<T, U, V>& b)

193 {

194 return a.m_impl == b.m_impl;

195 }

196

197 template<typename T, typename U, typename V>

198 inline bool operator!=(const HashTableKeysIterator<T, U, V>& a, const Ha shTableKeysIterator<T, U, V>& b)

199 {

200 return a.m_impl != b.m_impl;

201 }

202

203 template<typename T, typename U, typename V>

204 inline bool operator==(const HashTableValuesIterator<T, U, V>& a, const HashTableValuesIterator<T, U, V>& b)

205 {

206 return a.m_impl == b.m_impl;

207 }

208

209 template<typename T, typename U, typename V>

210 inline bool operator!=(const HashTableValuesIterator<T, U, V>& a, const HashTableValuesIterator<T, U, V>& b)

211 {

212 return a.m_impl != b.m_impl;

213 }

214

215

216 } // namespace WTF

217

218 #endif // WTF_HashIterators_h

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