| cwzwarich@webkit.org | 147f10e | 2008-10-31 19:53:20 +0000 | [diff] [blame^] | 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 "StructureIDChain.h" |
| 28 | |
| 29 | #include "JSObject.h" |
| 30 | #include "StructureID.h" |
| 31 | #include <wtf/RefPtr.h> |
| 32 | |
| 33 | namespace JSC { |
| 34 | |
| 35 | StructureIDChain::StructureIDChain(StructureID* structureID) |
| 36 | { |
| 37 | size_t size = 1; |
| 38 | |
| 39 | StructureID* tmp = structureID; |
| 40 | while (!tmp->storedPrototype()->isNull()) { |
| 41 | ++size; |
| 42 | tmp = asCell(tmp->storedPrototype())->structureID(); |
| 43 | } |
| 44 | |
| 45 | m_vector.set(new RefPtr<StructureID>[size + 1]); |
| 46 | |
| 47 | size_t i; |
| 48 | for (i = 0; i < size - 1; ++i) { |
| 49 | m_vector[i] = structureID; |
| 50 | structureID = asObject(structureID->storedPrototype())->structureID(); |
| 51 | } |
| 52 | m_vector[i] = structureID; |
| 53 | m_vector[i + 1] = 0; |
| 54 | } |
| 55 | |
| 56 | bool structureIDChainsAreEqual(StructureIDChain* chainA, StructureIDChain* chainB) |
| 57 | { |
| 58 | if (!chainA || !chainB) |
| 59 | return false; |
| 60 | |
| 61 | RefPtr<StructureID>* a = chainA->head(); |
| 62 | RefPtr<StructureID>* b = chainB->head(); |
| 63 | while (1) { |
| 64 | if (*a != *b) |
| 65 | return false; |
| 66 | if (!*a) |
| 67 | return true; |
| 68 | a++; |
| 69 | b++; |
| 70 | } |
| 71 | } |
| 72 | |
| 73 | } // namespace JSC |
