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Diffstat (limited to 'Source/JavaScriptCore/wtf/HashIterators.h')
| -rw-r--r-- | Source/JavaScriptCore/wtf/HashIterators.h | 216 |
1 files changed, 216 insertions, 0 deletions
diff --git a/Source/JavaScriptCore/wtf/HashIterators.h b/Source/JavaScriptCore/wtf/HashIterators.h new file mode 100644 index 0000000..682c83b --- /dev/null +++ b/Source/JavaScriptCore/wtf/HashIterators.h @@ -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 |