diff -r 000000000000 -r 4f2f89ce4247 JavaScriptCore/wtf/HashIterators.h
--- /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