1 /*
2 * Copyright (C) 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 #include "config.h"
27 #include "JSByteArray.h"
28
29 #include "JSGlobalObject.h"
30 #include "PropertyNameArray.h"
31
32 using namespace WTF;
33
34 namespace JSC {
35
36 const ClassInfo JSByteArray::s_defaultInfo = { "ByteArray", 0, 0, 0 };
37
JSByteArray(ExecState * exec,NonNullPassRefPtr<Structure> structure,ByteArray * storage,const JSC::ClassInfo * classInfo)38 JSByteArray::JSByteArray(ExecState* exec, NonNullPassRefPtr<Structure> structure, ByteArray* storage, const JSC::ClassInfo* classInfo)
39 : JSObject(structure)
40 , m_storage(storage)
41 , m_classInfo(classInfo)
42 {
43 putDirect(exec->globalData().propertyNames->length, jsNumber(exec, m_storage->length()), ReadOnly | DontDelete);
44 }
45
46 #if !ASSERT_DISABLED
~JSByteArray()47 JSByteArray::~JSByteArray()
48 {
49 ASSERT(vptr() == JSGlobalData::jsByteArrayVPtr);
50 }
51 #endif
52
53
createStructure(JSValue prototype)54 PassRefPtr<Structure> JSByteArray::createStructure(JSValue prototype)
55 {
56 PassRefPtr<Structure> result = Structure::create(prototype, TypeInfo(ObjectType, StructureFlags), AnonymousSlotCount);
57 return result;
58 }
59
getOwnPropertySlot(ExecState * exec,const Identifier & propertyName,PropertySlot & slot)60 bool JSByteArray::getOwnPropertySlot(ExecState* exec, const Identifier& propertyName, PropertySlot& slot)
61 {
62 bool ok;
63 unsigned index = propertyName.toUInt32(&ok, false);
64 if (ok && canAccessIndex(index)) {
65 slot.setValue(getIndex(exec, index));
66 return true;
67 }
68 return JSObject::getOwnPropertySlot(exec, propertyName, slot);
69 }
70
getOwnPropertyDescriptor(ExecState * exec,const Identifier & propertyName,PropertyDescriptor & descriptor)71 bool JSByteArray::getOwnPropertyDescriptor(ExecState* exec, const Identifier& propertyName, PropertyDescriptor& descriptor)
72 {
73 bool ok;
74 unsigned index = propertyName.toUInt32(&ok, false);
75 if (ok && canAccessIndex(index)) {
76 descriptor.setDescriptor(getIndex(exec, index), DontDelete);
77 return true;
78 }
79 return JSObject::getOwnPropertyDescriptor(exec, propertyName, descriptor);
80 }
81
getOwnPropertySlot(ExecState * exec,unsigned propertyName,PropertySlot & slot)82 bool JSByteArray::getOwnPropertySlot(ExecState* exec, unsigned propertyName, PropertySlot& slot)
83 {
84 if (canAccessIndex(propertyName)) {
85 slot.setValue(getIndex(exec, propertyName));
86 return true;
87 }
88 return JSObject::getOwnPropertySlot(exec, Identifier::from(exec, propertyName), slot);
89 }
90
put(ExecState * exec,const Identifier & propertyName,JSValue value,PutPropertySlot & slot)91 void JSByteArray::put(ExecState* exec, const Identifier& propertyName, JSValue value, PutPropertySlot& slot)
92 {
93 bool ok;
94 unsigned index = propertyName.toUInt32(&ok, false);
95 if (ok) {
96 setIndex(exec, index, value);
97 return;
98 }
99 JSObject::put(exec, propertyName, value, slot);
100 }
101
put(ExecState * exec,unsigned propertyName,JSValue value)102 void JSByteArray::put(ExecState* exec, unsigned propertyName, JSValue value)
103 {
104 setIndex(exec, propertyName, value);
105 }
106
getOwnPropertyNames(ExecState * exec,PropertyNameArray & propertyNames,EnumerationMode mode)107 void JSByteArray::getOwnPropertyNames(ExecState* exec, PropertyNameArray& propertyNames, EnumerationMode mode)
108 {
109 unsigned length = m_storage->length();
110 for (unsigned i = 0; i < length; ++i)
111 propertyNames.add(Identifier::from(exec, i));
112 JSObject::getOwnPropertyNames(exec, propertyNames, mode);
113 }
114
115 }
116
117