| 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
|
|---|
