1/*
2 * Copyright (C) 2015-2018 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. AND ITS CONTRIBUTORS ``AS IS''
14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
23 * THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#pragma once
27
28#include "JSFunction.h"
29
30namespace JSC {
31
32class CustomGetterSetter;
33
34class JSCustomGetterSetterFunction final : public JSFunction {
35public:
36 typedef JSFunction Base;
37
38 // The Type is set to the number of arguments the resultant function will have.
39 enum class Type { Getter = 0, Setter = 1 };
40
41 static const unsigned StructureFlags = Base::StructureFlags;
42
43 template<typename CellType, SubspaceAccess mode>
44 static IsoSubspace* subspaceFor(VM& vm)
45 {
46 return vm.customGetterSetterFunctionSpace<mode>();
47 }
48
49 static Structure* createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype)
50 {
51 ASSERT(globalObject);
52 return Structure::create(vm, globalObject, prototype, TypeInfo(JSFunctionType, StructureFlags), info());
53 }
54
55 static JSCustomGetterSetterFunction* create(VM&, JSGlobalObject*, CustomGetterSetter*, const Type, const PropertyName&);
56
57 DECLARE_EXPORT_INFO;
58
59protected:
60 static void visitChildren(JSCell*, SlotVisitor&);
61
62private:
63 JSCustomGetterSetterFunction(VM&, JSGlobalObject*, Structure*, Type, const PropertyName&);
64 void finishCreation(VM&, NativeExecutable*, CustomGetterSetter*, const String&);
65
66 static EncodedJSValue JSC_HOST_CALL customGetterSetterFunctionCall(ExecState*);
67
68 CustomGetterSetter* customGetterSetter() const { return m_getterSetter.get(); }
69 bool isSetter() const { return m_type == Type::Setter; }
70 const PropertyName& propertyName() const { return m_propertyName; }
71
72 WriteBarrier<CustomGetterSetter> m_getterSetter;
73 Type m_type;
74 PropertyName m_propertyName;
75};
76
77} // namespace JSC
78