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93a37866 A |
1 | /* |
2 | * Copyright (C) 2008, 2009 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 | #ifndef JSNameScope_h | |
27 | #define JSNameScope_h | |
28 | ||
29 | #include "JSGlobalObject.h" | |
30 | #include "JSVariableObject.h" | |
31 | ||
32 | namespace JSC { | |
33 | ||
34 | // Used for scopes with a single named variable: catch and named function expression. | |
35 | class JSNameScope : public JSVariableObject { | |
36 | public: | |
37 | typedef JSVariableObject Base; | |
38 | ||
39 | static JSNameScope* create(ExecState* exec, const Identifier& identifier, JSValue value, unsigned attributes) | |
40 | { | |
81345200 A |
41 | VM& vm = exec->vm(); |
42 | JSNameScope* scopeObject = new (NotNull, allocateCell<JSNameScope>(vm.heap)) JSNameScope(vm, exec->lexicalGlobalObject(), exec->scope()); | |
43 | scopeObject->finishCreation(vm, identifier, value, attributes); | |
93a37866 A |
44 | return scopeObject; |
45 | } | |
46 | ||
81345200 | 47 | static JSNameScope* create(VM& vm, JSGlobalObject* globalObject, const Identifier& identifier, JSValue value, unsigned attributes, JSScope* next) |
93a37866 | 48 | { |
81345200 A |
49 | JSNameScope* scopeObject = new (NotNull, allocateCell<JSNameScope>(vm.heap)) JSNameScope(vm, globalObject, next); |
50 | scopeObject->finishCreation(vm, identifier, value, attributes); | |
93a37866 A |
51 | return scopeObject; |
52 | } | |
53 | ||
54 | static void visitChildren(JSCell*, SlotVisitor&); | |
81345200 A |
55 | static JSValue toThis(JSCell*, ExecState*, ECMAMode); |
56 | static bool getOwnPropertySlot(JSObject*, ExecState*, PropertyName, PropertySlot&); | |
93a37866 A |
57 | static void put(JSCell*, ExecState*, PropertyName, JSValue, PutPropertySlot&); |
58 | ||
81345200 | 59 | static Structure* createStructure(VM& vm, JSGlobalObject* globalObject, JSValue proto) { return Structure::create(vm, globalObject, proto, TypeInfo(NameScopeObjectType, StructureFlags), info()); } |
93a37866 | 60 | |
81345200 | 61 | DECLARE_INFO; |
93a37866 A |
62 | |
63 | protected: | |
81345200 | 64 | void finishCreation(VM& vm, const Identifier& identifier, JSValue value, unsigned attributes) |
93a37866 | 65 | { |
81345200 A |
66 | Base::finishCreation(vm); |
67 | m_registerStore.set(vm, this, value); | |
93a37866 A |
68 | symbolTable()->add(identifier.impl(), SymbolTableEntry(-1, attributes)); |
69 | } | |
70 | ||
71 | static const unsigned StructureFlags = OverridesGetOwnPropertySlot | OverridesVisitChildren | Base::StructureFlags; | |
72 | ||
73 | private: | |
81345200 | 74 | JSNameScope(VM& vm, JSGlobalObject* globalObject, JSScope* next) |
93a37866 | 75 | : Base( |
81345200 A |
76 | vm, |
77 | globalObject->nameScopeStructure(), | |
93a37866 A |
78 | reinterpret_cast<Register*>(&m_registerStore + 1), |
79 | next | |
80 | ) | |
81 | { | |
82 | } | |
83 | ||
84 | WriteBarrier<Unknown> m_registerStore; | |
85 | }; | |
86 | ||
93a37866 A |
87 | } |
88 | ||
89 | #endif // JSNameScope_h |