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", 0, 0, 0 };
37
38JSByteArray::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
47JSByteArray::~JSByteArray()
48{
49    ASSERT(vptr() == JSGlobalData::jsByteArrayVPtr);
50}
51#endif
52
53
54PassRefPtr<Structure> JSByteArray::createStructure(JSValue prototype)
55{
56    PassRefPtr<Structure> result = Structure::create(prototype, TypeInfo(ObjectType, StructureFlags), AnonymousSlotCount);
57    return result;
58}
59
60bool 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
71bool 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
82bool 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
91void 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
102void JSByteArray::put(ExecState* exec, unsigned propertyName, JSValue value)
103{
104    setIndex(exec, propertyName, value);
105}
106
107void 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