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
32using namespace WTF;
33
34namespace JSC {
35
36const ClassInfo JSByteArray::s_defaultInfo = { "ByteArray", &Base::s_info, 0, 0 };
37
38JSByteArray::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
46JSByteArray::~JSByteArray()
47{
48    ASSERT(vptr() == JSGlobalData::jsByteArrayVPtr);
49}
50#endif
51
52
53Structure* JSByteArray::createStructure(JSGlobalData& globalData, JSValue prototype, const JSC::ClassInfo* classInfo)
54{
55    return Structure::create(globalData, prototype, TypeInfo(ObjectType, StructureFlags), AnonymousSlotCount, classInfo);
56}
57
58bool 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
69bool 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
80bool 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
89void 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
100void JSByteArray::put(ExecState* exec, unsigned propertyName, JSValue value)
101{
102    setIndex(exec, propertyName, value);
103}
104
105void 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