| /* |
| * 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 LLIntOffsetsExtractor; |
| |
| class JSPropertyNameIterator : public JSCell { |
| friend class JIT; |
| |
| public: |
| typedef JSCell Base; |
| |
| static JSPropertyNameIterator* create(ExecState*, JSObject*); |
| |
| static const bool needsDestruction = true; |
| static const bool hasImmortalStructure = true; |
| static void destroy(JSCell*); |
| |
| static Structure* createStructure(JSGlobalData& globalData, JSGlobalObject* globalObject, JSValue prototype) |
| { |
| return Structure::create(globalData, globalObject, prototype, TypeInfo(CompoundType, OverridesVisitChildren), &s_info); |
| } |
| |
| static void visitChildren(JSCell*, SlotVisitor&); |
| |
| JSValue get(ExecState*, JSObject*, size_t i); |
| size_t size() { return m_jsStringsSize; } |
| |
| void setCachedStructure(JSGlobalData& globalData, Structure* structure) |
| { |
| ASSERT(!m_cachedStructure); |
| ASSERT(structure); |
| m_cachedStructure.set(globalData, this, structure); |
| } |
| Structure* cachedStructure() { return m_cachedStructure.get(); } |
| |
| void setCachedPrototypeChain(JSGlobalData& globalData, StructureChain* cachedPrototypeChain) { m_cachedPrototypeChain.set(globalData, this, cachedPrototypeChain); } |
| StructureChain* cachedPrototypeChain() { return m_cachedPrototypeChain.get(); } |
| |
| DECLARE_CLASSINFO(); |
| |
| protected: |
| void finishCreation(ExecState* exec, PropertyNameArrayData* propertyNameArrayData, JSObject* object) |
| { |
| Base::finishCreation(exec->globalData()); |
| PropertyNameArrayData::PropertyNameVector& propertyNameVector = propertyNameArrayData->propertyNameVector(); |
| for (size_t i = 0; i < m_jsStringsSize; ++i) |
| m_jsStrings[i].set(exec->globalData(), this, jsOwnedString(exec, propertyNameVector[i].string())); |
| m_cachedStructureInlineCapacity = object->structure()->inlineCapacity(); |
| } |
| |
| private: |
| friend class LLIntOffsetsExtractor; |
| |
| JSPropertyNameIterator(ExecState*, PropertyNameArrayData* propertyNameArrayData, size_t numCacheableSlot); |
| |
| WriteBarrier<Structure> m_cachedStructure; |
| WriteBarrier<StructureChain> m_cachedPrototypeChain; |
| uint32_t m_numCacheableSlots; |
| uint32_t m_jsStringsSize; |
| unsigned m_cachedStructureInlineCapacity; |
| OwnArrayPtr<WriteBarrier<Unknown> > m_jsStrings; |
| }; |
| |
| inline void Structure::setEnumerationCache(JSGlobalData& globalData, JSPropertyNameIterator* enumerationCache) |
| { |
| ASSERT(!isDictionary()); |
| m_enumerationCache.set(globalData, this, enumerationCache); |
| } |
| |
| inline JSPropertyNameIterator* Structure::enumerationCache() |
| { |
| return m_enumerationCache.get(); |
| } |
| |
| ALWAYS_INLINE JSPropertyNameIterator* Register::propertyNameIterator() const |
| { |
| return jsCast<JSPropertyNameIterator*>(jsValue().asCell()); |
| } |
| |
| } // namespace JSC |
| |
| #endif // JSPropertyNameIterator_h |