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 #include "config.h" 27 #include "StructureChain.h" 28 29 #include "JSObject.h" 30 #include "Structure.h" 31 #include <wtf/RefPtr.h> 32 33 namespace JSC { 34 35 ClassInfo StructureChain::s_info = { "StructureChain", 0, 0, 0 }; 36 37 StructureChain::StructureChain(JSGlobalData& globalData, Structure* structure, Structure* head) 38 : JSCell(globalData, structure) 39 { 40 size_t size = 0; 41 for (Structure* current = head; current; current = current->storedPrototype().isNull() ? 0 : asObject(current->storedPrototype())->structure()) 42 ++size; 43 44 m_vector = adoptArrayPtr(new WriteBarrier<Structure>[size + 1]); 45 46 size_t i = 0; 47 for (Structure* current = head; current; current = current->storedPrototype().isNull() ? 0 : asObject(current->storedPrototype())->structure()) 48 m_vector[i++].set(globalData, this, current); 49 m_vector[i].clear(); 50 } 51 52 StructureChain::~StructureChain() 53 { 54 } 55 56 void StructureChain::markChildren(MarkStack& markStack) 57 { 58 size_t i = 0; 59 while (m_vector[i]) 60 markStack.append(&m_vector[i++]); 61 } 62 63 } // namespace JSC 64
