1 /* 2 * Copyright (C) 2008 Apple Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26 #ifndef StructureChain_h 27 #define StructureChain_h 28 29 #include "JSCell.h" 30 #include "Structure.h" 31 32 #include <wtf/OwnArrayPtr.h> 33 #include <wtf/PassRefPtr.h> 34 #include <wtf/RefCounted.h> 35 #include <wtf/RefPtr.h> 36 37 namespace JSC { 38 39 class Structure; 40 41 class StructureChain : public JSCell { 42 friend class JIT; 43 44 public: 45 static StructureChain* create(JSGlobalData& globalData, Structure* head) { return new (&globalData) StructureChain(globalData, globalData.structureChainStructure.get(), head); } 46 WriteBarrier<Structure>* head() { return m_vector.get(); } 47 void markChildren(MarkStack&); 48 49 static Structure* createStructure(JSGlobalData& globalData, JSValue prototype) { return Structure::create(globalData, prototype, TypeInfo(CompoundType, OverridesMarkChildren), 0, &s_info); } 50 51 private: 52 StructureChain(JSGlobalData&, Structure*, Structure* head); 53 ~StructureChain(); 54 OwnArrayPtr<WriteBarrier<Structure> > m_vector; 55 static ClassInfo s_info; 56 }; 57 58 } // namespace JSC 59 60 #endif // StructureChain_h 61
