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