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 JSStaticScopeObject_h
27#define JSStaticScopeObject_h
28
29#include "JSVariableObject.h"
30
31namespace JSC{
32
33    class JSStaticScopeObject : public JSVariableObject {
34    protected:
35        using JSVariableObject::JSVariableObjectData;
36        struct JSStaticScopeObjectData : public JSVariableObjectData {
37            JSStaticScopeObjectData()
38                : JSVariableObjectData(&symbolTable, &registerStore + 1)
39            {
40            }
41            SymbolTable symbolTable;
42            Register registerStore;
43        };
44
45    public:
46        JSStaticScopeObject(ExecState* exec, const Identifier& ident, JSValue value, unsigned attributes)
47            : JSVariableObject(exec->globalData().staticScopeStructure, new JSStaticScopeObjectData())
48        {
49            d()->registerStore = value;
50            symbolTable().add(ident.ustring().rep(), SymbolTableEntry(-1, attributes));
51        }
52        virtual ~JSStaticScopeObject();
53        virtual void markChildren(MarkStack&);
54        bool isDynamicScope() const;
55        virtual JSObject* toThisObject(ExecState*) const;
56        virtual bool getOwnPropertySlot(ExecState*, const Identifier&, PropertySlot&);
57        virtual void put(ExecState*, const Identifier&, JSValue, PutPropertySlot&);
58        void putWithAttributes(ExecState*, const Identifier&, JSValue, unsigned attributes);
59
60        static PassRefPtr<Structure> createStructure(JSValue proto) { return Structure::create(proto, TypeInfo(ObjectType, StructureFlags), AnonymousSlotCount); }
61
62    protected:
63        static const unsigned StructureFlags = OverridesGetOwnPropertySlot | NeedsThisConversion | OverridesMarkChildren | OverridesGetPropertyNames | JSVariableObject::StructureFlags;
64
65    private:
66        JSStaticScopeObjectData* d() { return static_cast<JSStaticScopeObjectData*>(JSVariableObject::d); }
67    };
68
69}
70
71#endif // JSStaticScopeObject_h
72