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1 | /* | |
2 | * Copyright (C) 2012 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 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 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 "ResolveGlobalStatus.h" | |
28 | ||
29 | #include "CodeBlock.h" | |
30 | #include "JSCJSValue.h" | |
31 | #include "Operations.h" | |
32 | #include "Structure.h" | |
33 | ||
34 | namespace JSC { | |
35 | ||
36 | static ResolveGlobalStatus computeForStructure(CodeBlock* codeBlock, Structure* structure, Identifier& identifier) | |
37 | { | |
38 | unsigned attributesIgnored; | |
39 | JSCell* specificValue; | |
40 | PropertyOffset offset = structure->get(*codeBlock->vm(), identifier, attributesIgnored, specificValue); | |
41 | if (structure->isDictionary()) | |
42 | specificValue = 0; | |
43 | if (!isValidOffset(offset)) | |
44 | return ResolveGlobalStatus(); | |
45 | ||
46 | return ResolveGlobalStatus(ResolveGlobalStatus::Simple, structure, offset, specificValue); | |
47 | } | |
48 | ||
49 | ResolveGlobalStatus ResolveGlobalStatus::computeFor(CodeBlock* codeBlock, int, ResolveOperation* operation, Identifier& identifier) | |
50 | { | |
51 | ASSERT(operation->m_operation == ResolveOperation::GetAndReturnGlobalProperty); | |
52 | if (!operation->m_structure) | |
53 | return ResolveGlobalStatus(); | |
54 | ||
55 | return computeForStructure(codeBlock, operation->m_structure.get(), identifier); | |
56 | } | |
57 | ||
58 | } // namespace JSC | |
59 |