1/*
2 * Copyright (C) 2003, 2008 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 COMPUTER, 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 COMPUTER, 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 "runtime_array.h"
28
29#include <runtime/ArrayPrototype.h>
30#include <runtime/Error.h>
31#include <runtime/PropertyNameArray.h>
32#include "JSDOMBinding.h"
33
34using namespace WebCore;
35
36namespace JSC {
37
38const ClassInfo RuntimeArray::s_info = { "RuntimeArray", &JSArray::s_info, 0, 0 };
39
40RuntimeArray::RuntimeArray(ExecState* exec, Bindings::Array* array)
41    // FIXME: deprecatedGetDOMStructure uses the prototype off of the wrong global object
42    // We need to pass in the right global object for "array".
43    : JSArray(exec->globalData(), deprecatedGetDOMStructure<RuntimeArray>(exec))
44{
45    ASSERT(inherits(&s_info));
46    setSubclassData(array);
47}
48
49RuntimeArray::~RuntimeArray()
50{
51    delete getConcreteArray();
52}
53
54JSValue RuntimeArray::lengthGetter(ExecState*, JSValue slotBase, const Identifier&)
55{
56    RuntimeArray* thisObj = static_cast<RuntimeArray*>(asObject(slotBase));
57    return jsNumber(thisObj->getLength());
58}
59
60JSValue RuntimeArray::indexGetter(ExecState* exec, JSValue slotBase, unsigned index)
61{
62    RuntimeArray* thisObj = static_cast<RuntimeArray*>(asObject(slotBase));
63    return thisObj->getConcreteArray()->valueAt(exec, index);
64}
65
66void RuntimeArray::getOwnPropertyNames(ExecState* exec, PropertyNameArray& propertyNames, EnumerationMode mode)
67{
68    unsigned length = getLength();
69    for (unsigned i = 0; i < length; ++i)
70        propertyNames.add(Identifier::from(exec, i));
71
72    if (mode == IncludeDontEnumProperties)
73        propertyNames.add(exec->propertyNames().length);
74
75    JSObject::getOwnPropertyNames(exec, propertyNames, mode);
76}
77
78bool RuntimeArray::getOwnPropertySlot(ExecState* exec, const Identifier& propertyName, PropertySlot& slot)
79{
80    if (propertyName == exec->propertyNames().length) {
81        slot.setCacheableCustom(this, lengthGetter);
82        return true;
83    }
84
85    bool ok;
86    unsigned index = propertyName.toArrayIndex(ok);
87    if (ok) {
88        if (index < getLength()) {
89            slot.setCustomIndex(this, index, indexGetter);
90            return true;
91        }
92    }
93
94    return JSObject::getOwnPropertySlot(exec, propertyName, slot);
95}
96
97bool RuntimeArray::getOwnPropertyDescriptor(ExecState* exec, const Identifier& propertyName, PropertyDescriptor& descriptor)
98{
99    if (propertyName == exec->propertyNames().length) {
100        PropertySlot slot;
101        slot.setCustom(this, lengthGetter);
102        descriptor.setDescriptor(slot.getValue(exec, propertyName), ReadOnly | DontDelete | DontEnum);
103        return true;
104    }
105
106    bool ok;
107    unsigned index = propertyName.toArrayIndex(ok);
108    if (ok) {
109        if (index < getLength()) {
110            PropertySlot slot;
111            slot.setCustomIndex(this, index, indexGetter);
112            descriptor.setDescriptor(slot.getValue(exec, propertyName), DontDelete | DontEnum);
113            return true;
114        }
115    }
116
117    return JSObject::getOwnPropertyDescriptor(exec, propertyName, descriptor);
118}
119
120bool RuntimeArray::getOwnPropertySlot(ExecState *exec, unsigned index, PropertySlot& slot)
121{
122    if (index < getLength()) {
123        slot.setCustomIndex(this, index, indexGetter);
124        return true;
125    }
126
127    return JSObject::getOwnPropertySlot(exec, index, slot);
128}
129
130void RuntimeArray::put(ExecState* exec, const Identifier& propertyName, JSValue value, PutPropertySlot& slot)
131{
132    if (propertyName == exec->propertyNames().length) {
133        throwError(exec, createRangeError(exec, "Range error"));
134        return;
135    }
136
137    bool ok;
138    unsigned index = propertyName.toArrayIndex(ok);
139    if (ok) {
140        getConcreteArray()->setValueAt(exec, index, value);
141        return;
142    }
143
144    JSObject::put(exec, propertyName, value, slot);
145}
146
147void RuntimeArray::put(ExecState* exec, unsigned index, JSValue value)
148{
149    if (index >= getLength()) {
150        throwError(exec, createRangeError(exec, "Range error"));
151        return;
152    }
153
154    getConcreteArray()->setValueAt(exec, index, value);
155}
156
157bool RuntimeArray::deleteProperty(ExecState*, const Identifier&)
158{
159    return false;
160}
161
162bool RuntimeArray::deleteProperty(ExecState*, unsigned)
163{
164    return false;
165}
166
167}
168