| | 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::visitChildren(SlotVisitor& visitor) |
| | 57 | { |
| | 58 | ASSERT_GC_OBJECT_INHERITS(this, &s_info); |
| | 59 | ASSERT(structure()->typeInfo().overridesVisitChildren()); |
| | 60 | size_t i = 0; |
| | 61 | while (m_vector[i]) |
| | 62 | visitor.append(&m_vector[i++]); |
| | 63 | } |
| | 64 | |
| | 65 | } // namespace JSC |
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