1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
|
/*
* Copyright (C) 2011, 2012 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "JSProxy.h"
#include "JSGlobalObject.h"
#include "JSCInlines.h"
namespace JSC {
STATIC_ASSERT_IS_TRIVIALLY_DESTRUCTIBLE(JSProxy);
const ClassInfo JSProxy::s_info = { "JSProxy", &Base::s_info, 0, CREATE_METHOD_TABLE(JSProxy) };
void JSProxy::visitChildren(JSCell* cell, SlotVisitor& visitor)
{
JSProxy* thisObject = jsCast<JSProxy*>(cell);
ASSERT_GC_OBJECT_INHERITS(thisObject, info());
Base::visitChildren(thisObject, visitor);
visitor.append(&thisObject->m_target);
}
void JSProxy::setTarget(VM& vm, JSGlobalObject* globalObject)
{
ASSERT_ARG(globalObject, globalObject);
m_target.set(vm, this, globalObject);
setPrototype(vm, globalObject->prototype());
PrototypeMap& prototypeMap = vm.prototypeMap;
if (!prototypeMap.isPrototype(this))
return;
// This is slow but constant time. We think it's very rare for a proxy
// to be a prototype, and reasonably rare to retarget a proxy,
// so slow constant time is OK.
for (size_t i = 0; i <= JSFinalObject::maxInlineCapacity(); ++i)
prototypeMap.clearEmptyObjectStructureForPrototype(this, i);
}
String JSProxy::className(const JSObject* object)
{
const JSProxy* thisObject = jsCast<const JSProxy*>(object);
return thisObject->target()->methodTable()->className(thisObject->target());
}
bool JSProxy::getOwnPropertySlot(JSObject* object, ExecState* exec, PropertyName propertyName, PropertySlot& slot)
{
JSProxy* thisObject = jsCast<JSProxy*>(object);
return thisObject->target()->methodTable(exec->vm())->getOwnPropertySlot(thisObject->target(), exec, propertyName, slot);
}
bool JSProxy::getOwnPropertySlotByIndex(JSObject* object, ExecState* exec, unsigned propertyName, PropertySlot& slot)
{
JSProxy* thisObject = jsCast<JSProxy*>(object);
return thisObject->target()->methodTable(exec->vm())->getOwnPropertySlotByIndex(thisObject->target(), exec, propertyName, slot);
}
void JSProxy::put(JSCell* cell, ExecState* exec, PropertyName propertyName, JSValue value, PutPropertySlot& slot)
{
JSProxy* thisObject = jsCast<JSProxy*>(cell);
thisObject->target()->methodTable(exec->vm())->put(thisObject->target(), exec, propertyName, value, slot);
}
void JSProxy::putByIndex(JSCell* cell, ExecState* exec, unsigned propertyName, JSValue value, bool shouldThrow)
{
JSProxy* thisObject = jsCast<JSProxy*>(cell);
thisObject->target()->methodTable(exec->vm())->putByIndex(thisObject->target(), exec, propertyName, value, shouldThrow);
}
bool JSProxy::defineOwnProperty(JSObject* object, ExecState* exec, PropertyName propertyName, const PropertyDescriptor& descriptor, bool shouldThrow)
{
JSProxy* thisObject = jsCast<JSProxy*>(object);
return thisObject->target()->methodTable(exec->vm())->defineOwnProperty(thisObject->target(), exec, propertyName, descriptor, shouldThrow);
}
bool JSProxy::deleteProperty(JSCell* cell, ExecState* exec, PropertyName propertyName)
{
JSProxy* thisObject = jsCast<JSProxy*>(cell);
return thisObject->target()->methodTable(exec->vm())->deleteProperty(thisObject->target(), exec, propertyName);
}
bool JSProxy::deletePropertyByIndex(JSCell* cell, ExecState* exec, unsigned propertyName)
{
JSProxy* thisObject = jsCast<JSProxy*>(cell);
return thisObject->target()->methodTable(exec->vm())->deletePropertyByIndex(thisObject->target(), exec, propertyName);
}
void JSProxy::getPropertyNames(JSObject* object, ExecState* exec, PropertyNameArray& propertyNames, EnumerationMode mode)
{
JSProxy* thisObject = jsCast<JSProxy*>(object);
thisObject->target()->methodTable(exec->vm())->getPropertyNames(thisObject->target(), exec, propertyNames, mode);
}
uint32_t JSProxy::getEnumerableLength(ExecState* exec, JSObject* object)
{
JSProxy* thisObject = jsCast<JSProxy*>(object);
return thisObject->target()->methodTable(exec->vm())->getEnumerableLength(exec, thisObject->target());
}
void JSProxy::getStructurePropertyNames(JSObject*, ExecState*, PropertyNameArray&, EnumerationMode)
{
// Skip the structure loop, since it is invalid for proxies.
}
void JSProxy::getGenericPropertyNames(JSObject* object, ExecState* exec, PropertyNameArray& propertyNames, EnumerationMode mode)
{
JSProxy* thisObject = jsCast<JSProxy*>(object);
// Get *all* of the property names, not just the generic ones, since we skipped the structure
// ones above.
thisObject->target()->methodTable(exec->vm())->getPropertyNames(thisObject->target(), exec, propertyNames, mode);
}
void JSProxy::getOwnPropertyNames(JSObject* object, ExecState* exec, PropertyNameArray& propertyNames, EnumerationMode mode)
{
JSProxy* thisObject = jsCast<JSProxy*>(object);
thisObject->target()->methodTable(exec->vm())->getOwnPropertyNames(thisObject->target(), exec, propertyNames, mode);
}
} // namespace JSC
|
