-/*
- * 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 JSPropertyNameIterator* create(ExecState* exec, PropertyNameArrayData* propertyNameArrayData, size_t numCacheableSlot)
- {
- JSPropertyNameIterator* iterator = new (NotNull, allocateCell<JSPropertyNameIterator>(*exec->heap())) JSPropertyNameIterator(exec, propertyNameArrayData, numCacheableSlot);
- iterator->finishCreation(exec, propertyNameArrayData);
- return iterator;
- }
-
- 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&);
-
- 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(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(); }
-
- static const ClassInfo s_info;
-
- protected:
- void finishCreation(ExecState* exec, PropertyNameArrayData* propertyNameArrayData)
- {
- 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].ustring()));
- }
-
- 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;
- 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