1/*
2 * Copyright (C) 1999-2002 Harri Porten (porten@kde.org)
3 * Copyright (C) 2001 Peter Kelly (pmk@post.com)
4 * Copyright (C) 2004-2017 Apple Inc. All rights reserved.
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Library General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Library General Public License for more details.
15 *
16 * You should have received a copy of the GNU Library General Public License
17 * along with this library; see the file COPYING.LIB. If not, write to
18 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
19 * Boston, MA 02110-1301, USA.
20 *
21 */
22
23#include "config.h"
24#include "GetterSetter.h"
25
26#include "Error.h"
27#include "Exception.h"
28#include "JSObject.h"
29#include "JSCInlines.h"
30#include <wtf/Assertions.h>
31
32namespace JSC {
33
34STATIC_ASSERT_IS_TRIVIALLY_DESTRUCTIBLE(GetterSetter);
35
36const ClassInfo GetterSetter::s_info = { "GetterSetter", &Base::s_info, nullptr, nullptr, CREATE_METHOD_TABLE(GetterSetter) };
37
38void GetterSetter::visitChildren(JSCell* cell, SlotVisitor& visitor)
39{
40 GetterSetter* thisObject = jsCast<GetterSetter*>(cell);
41 ASSERT_GC_OBJECT_INHERITS(thisObject, info());
42 Base::visitChildren(thisObject, visitor);
43
44 visitor.append(thisObject->m_getter);
45 visitor.append(thisObject->m_setter);
46}
47
48JSValue callGetter(ExecState* exec, JSValue base, JSValue getterSetter)
49{
50 VM& vm = exec->vm();
51 auto scope = DECLARE_THROW_SCOPE(vm);
52 // FIXME: Some callers may invoke get() without checking for an exception first.
53 // We work around that by checking here.
54 RETURN_IF_EXCEPTION(scope, scope.exception()->value());
55
56 JSObject* getter = jsCast<GetterSetter*>(getterSetter)->getter();
57
58 CallData callData;
59 CallType callType = getter->methodTable(vm)->getCallData(getter, callData);
60 RELEASE_AND_RETURN(scope, call(exec, getter, callType, callData, base, ArgList()));
61}
62
63bool callSetter(ExecState* exec, JSValue base, JSValue getterSetter, JSValue value, ECMAMode ecmaMode)
64{
65 VM& vm = exec->vm();
66 auto scope = DECLARE_THROW_SCOPE(vm);
67
68 GetterSetter* getterSetterObj = jsCast<GetterSetter*>(getterSetter);
69
70 if (getterSetterObj->isSetterNull())
71 return typeError(exec, scope, ecmaMode == StrictMode, ReadonlyPropertyWriteError);
72
73 JSObject* setter = getterSetterObj->setter();
74
75 MarkedArgumentBuffer args;
76 args.append(value);
77 ASSERT(!args.hasOverflowed());
78
79 CallData callData;
80 CallType callType = setter->methodTable(vm)->getCallData(setter, callData);
81 scope.release();
82 call(exec, setter, callType, callData, base, args);
83 return true;
84}
85
86} // namespace JSC
87