| /* |
| * Copyright (C) 2008, 2009 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. |
| * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of |
| * its contributors may be used to endorse or promote products derived |
| * from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "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 OR ITS 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 JSPropertyNameIterator_h |
| #define JSPropertyNameIterator_h |
| |
| #include "JSObject.h" |
| #include "JSString.h" |
| #include "Operations.h" |
| #include "PropertyNameArray.h" |
| |
| namespace JSC { |
| |
| class Identifier; |
| class JSObject; |
| |
| class JSPropertyNameIterator : public JSCell { |
| friend class JIT; |
| |
| public: |
| static JSPropertyNameIterator* create(ExecState*, JSObject*); |
| |
| static PassRefPtr<Structure> createStructure(JSValue prototype) |
| { |
| return Structure::create(prototype, TypeInfo(CompoundType, OverridesMarkChildren), AnonymousSlotCount); |
| } |
| |
| virtual ~JSPropertyNameIterator(); |
| |
| virtual bool isPropertyNameIterator() const { return true; } |
| |
| virtual void markChildren(MarkStack&); |
| |
| bool getOffset(size_t i, int& offset) |
| { |
| if (i >= m_numCacheableSlots) |
| return false; |
| offset = i; |
| return true; |
| } |
| |
| JSValue get(ExecState*, JSObject*, size_t i); |
| size_t size() { return m_jsStringsSize; } |
| |
| void setCachedStructure(Structure* structure) |
| { |
| ASSERT(!m_cachedStructure); |
| ASSERT(structure); |
| m_cachedStructure = structure; |
| } |
| Structure* cachedStructure() { return m_cachedStructure.get(); } |
| |
| void setCachedPrototypeChain(NonNullPassRefPtr<StructureChain> cachedPrototypeChain) { m_cachedPrototypeChain = cachedPrototypeChain; } |
| StructureChain* cachedPrototypeChain() { return m_cachedPrototypeChain.get(); } |
| |
| private: |
| JSPropertyNameIterator(ExecState*, PropertyNameArrayData* propertyNameArrayData, size_t numCacheableSlot); |
| |
| RefPtr<Structure> m_cachedStructure; |
| RefPtr<StructureChain> m_cachedPrototypeChain; |
| uint32_t m_numCacheableSlots; |
| uint32_t m_jsStringsSize; |
| OwnArrayPtr<JSValue> m_jsStrings; |
| }; |
| |
| inline void Structure::setEnumerationCache(JSPropertyNameIterator* enumerationCache) |
| { |
| ASSERT(!isDictionary()); |
| m_enumerationCache = enumerationCache; |
| } |
| |
| inline void Structure::clearEnumerationCache(JSPropertyNameIterator* enumerationCache) |
| { |
| m_enumerationCache.clear(enumerationCache); |
| } |
| |
| inline JSPropertyNameIterator* Structure::enumerationCache() |
| { |
| return m_enumerationCache.get(); |
| } |
| |
| } // namespace JSC |
| |
| #endif // JSPropertyNameIterator_h |