--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/JavaScriptCore/wtf/HashIterators.h Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,216 @@
+/*
+ * Copyright (C) 2007 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.
+ */
+
+#ifndef WTF_HashIterators_h
+#define WTF_HashIterators_h
+
+namespace WTF {
+
+ template<typename HashTableType, typename KeyType, typename MappedType> struct HashTableConstKeysIterator;
+ template<typename HashTableType, typename KeyType, typename MappedType> struct HashTableConstValuesIterator;
+ template<typename HashTableType, typename KeyType, typename MappedType> struct HashTableKeysIterator;
+ template<typename HashTableType, typename KeyType, typename MappedType> struct HashTableValuesIterator;
+
+ template<typename HashTableType, typename KeyType, typename MappedType> struct HashTableConstIteratorAdapter<HashTableType, std::pair<KeyType, MappedType> > {
+ private:
+ typedef std::pair<KeyType, MappedType> ValueType;
+ public:
+ typedef HashTableConstKeysIterator<HashTableType, KeyType, MappedType> Keys;
+ typedef HashTableConstValuesIterator<HashTableType, KeyType, MappedType> Values;
+
+ HashTableConstIteratorAdapter(const typename HashTableType::const_iterator& impl) : m_impl(impl) {}
+
+ const ValueType* get() const { return (const ValueType*)m_impl.get(); }
+ const ValueType& operator*() const { return *get(); }
+ const ValueType* operator->() const { return get(); }
+
+ HashTableConstIteratorAdapter& operator++() { ++m_impl; return *this; }
+ // postfix ++ intentionally omitted
+
+ Keys keys() { return Keys(*this); }
+ Values values() { return Values(*this); }
+
+ typename HashTableType::const_iterator m_impl;
+ };
+
+ template<typename HashTableType, typename KeyType, typename MappedType> struct HashTableIteratorAdapter<HashTableType, std::pair<KeyType, MappedType> > {
+ private:
+ typedef std::pair<KeyType, MappedType> ValueType;
+ public:
+ typedef HashTableKeysIterator<HashTableType, KeyType, MappedType> Keys;
+ typedef HashTableValuesIterator<HashTableType, KeyType, MappedType> Values;
+
+ HashTableIteratorAdapter(const typename HashTableType::iterator& impl) : m_impl(impl) {}
+
+ ValueType* get() const { return (ValueType*)m_impl.get(); }
+ ValueType& operator*() const { return *get(); }
+ ValueType* operator->() const { return get(); }
+
+ HashTableIteratorAdapter& operator++() { ++m_impl; return *this; }
+ // postfix ++ intentionally omitted
+
+ operator HashTableConstIteratorAdapter<HashTableType, ValueType>() {
+ typename HashTableType::const_iterator i = m_impl;
+ return i;
+ }
+
+ Keys keys() { return Keys(*this); }
+ Values values() { return Values(*this); }
+
+ typename HashTableType::iterator m_impl;
+ };
+
+ template<typename HashTableType, typename KeyType, typename MappedType> struct HashTableConstKeysIterator {
+ private:
+ typedef HashTableConstIteratorAdapter<HashTableType, std::pair<KeyType, MappedType> > ConstIterator;
+
+ public:
+ HashTableConstKeysIterator(const ConstIterator& impl) : m_impl(impl) {}
+
+ const KeyType* get() const { return &(m_impl.get()->first); }
+ const KeyType& operator*() const { return *get(); }
+ const KeyType* operator->() const { return get(); }
+
+ HashTableConstKeysIterator& operator++() { ++m_impl; return *this; }
+ // postfix ++ intentionally omitted
+
+ ConstIterator m_impl;
+ };
+
+ template<typename HashTableType, typename KeyType, typename MappedType> struct HashTableConstValuesIterator {
+ private:
+ typedef HashTableConstIteratorAdapter<HashTableType, std::pair<KeyType, MappedType> > ConstIterator;
+
+ public:
+ HashTableConstValuesIterator(const ConstIterator& impl) : m_impl(impl) {}
+
+ const MappedType* get() const { return &(m_impl.get()->second); }
+ const MappedType& operator*() const { return *get(); }
+ const MappedType* operator->() const { return get(); }
+
+ HashTableConstValuesIterator& operator++() { ++m_impl; return *this; }
+ // postfix ++ intentionally omitted
+
+ ConstIterator m_impl;
+ };
+
+ template<typename HashTableType, typename KeyType, typename MappedType> struct HashTableKeysIterator {
+ private:
+ typedef HashTableIteratorAdapter<HashTableType, std::pair<KeyType, MappedType> > Iterator;
+ typedef HashTableConstIteratorAdapter<HashTableType, std::pair<KeyType, MappedType> > ConstIterator;
+
+ public:
+ HashTableKeysIterator(const Iterator& impl) : m_impl(impl) {}
+
+ KeyType* get() const { return &(m_impl.get()->first); }
+ KeyType& operator*() const { return *get(); }
+ KeyType* operator->() const { return get(); }
+
+ HashTableKeysIterator& operator++() { ++m_impl; return *this; }
+ // postfix ++ intentionally omitted
+
+ operator HashTableConstKeysIterator<HashTableType, KeyType, MappedType>() {
+ ConstIterator i = m_impl;
+ return i;
+ }
+
+ Iterator m_impl;
+ };
+
+ template<typename HashTableType, typename KeyType, typename MappedType> struct HashTableValuesIterator {
+ private:
+ typedef HashTableIteratorAdapter<HashTableType, std::pair<KeyType, MappedType> > Iterator;
+ typedef HashTableConstIteratorAdapter<HashTableType, std::pair<KeyType, MappedType> > ConstIterator;
+
+ public:
+ HashTableValuesIterator(const Iterator& impl) : m_impl(impl) {}
+
+ MappedType* get() const { return &(m_impl.get()->second); }
+ MappedType& operator*() const { return *get(); }
+ MappedType* operator->() const { return get(); }
+
+ HashTableValuesIterator& operator++() { ++m_impl; return *this; }
+ // postfix ++ intentionally omitted
+
+ operator HashTableConstValuesIterator<HashTableType, KeyType, MappedType>() {
+ ConstIterator i = m_impl;
+ return i;
+ }
+
+ Iterator m_impl;
+ };
+
+ template<typename T, typename U, typename V>
+ inline bool operator==(const HashTableConstKeysIterator<T, U, V>& a, const HashTableConstKeysIterator<T, U, V>& b)
+ {
+ return a.m_impl == b.m_impl;
+ }
+
+ template<typename T, typename U, typename V>
+ inline bool operator!=(const HashTableConstKeysIterator<T, U, V>& a, const HashTableConstKeysIterator<T, U, V>& b)
+ {
+ return a.m_impl != b.m_impl;
+ }
+
+ template<typename T, typename U, typename V>
+ inline bool operator==(const HashTableConstValuesIterator<T, U, V>& a, const HashTableConstValuesIterator<T, U, V>& b)
+ {
+ return a.m_impl == b.m_impl;
+ }
+
+ template<typename T, typename U, typename V>
+ inline bool operator!=(const HashTableConstValuesIterator<T, U, V>& a, const HashTableConstValuesIterator<T, U, V>& b)
+ {
+ return a.m_impl != b.m_impl;
+ }
+
+ template<typename T, typename U, typename V>
+ inline bool operator==(const HashTableKeysIterator<T, U, V>& a, const HashTableKeysIterator<T, U, V>& b)
+ {
+ return a.m_impl == b.m_impl;
+ }
+
+ template<typename T, typename U, typename V>
+ inline bool operator!=(const HashTableKeysIterator<T, U, V>& a, const HashTableKeysIterator<T, U, V>& b)
+ {
+ return a.m_impl != b.m_impl;
+ }
+
+ template<typename T, typename U, typename V>
+ inline bool operator==(const HashTableValuesIterator<T, U, V>& a, const HashTableValuesIterator<T, U, V>& b)
+ {
+ return a.m_impl == b.m_impl;
+ }
+
+ template<typename T, typename U, typename V>
+ inline bool operator!=(const HashTableValuesIterator<T, U, V>& a, const HashTableValuesIterator<T, U, V>& b)
+ {
+ return a.m_impl != b.m_impl;
+ }
+
+
+} // namespace WTF
+
+#endif // WTF_HashIterators_h