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 = { .className: "ByteArray", .parentClass: 0, .staticPropHashTable: 0, .classPropHashTableGetterFunction: 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(propertyName: exec->globalData().propertyNames->length, value: jsNumber(exec, i: m_storage->length()), attributes: 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: TypeInfo(ObjectType, StructureFlags));
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: &ok, tolerateEmptyString: false);
64 if (ok && canAccessIndex(i: index)) {
65 slot.setValue(getIndex(exec, i: 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: &ok, tolerateEmptyString: false);
75 if (ok && canAccessIndex(i: index)) {
76 descriptor.setDescriptor(value: getIndex(exec, i: index), attributes: 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(i: propertyName)) {
85 slot.setValue(getIndex(exec, i: propertyName));
86 return true;
87 }
88 return JSObject::getOwnPropertySlot(exec, propertyName: Identifier::from(exec, y: 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: &ok, tolerateEmptyString: false);
95 if (ok) {
96 setIndex(exec, i: 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, i: 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: Identifier::from(exec, y: i));
112 JSObject::getOwnPropertyNames(exec, propertyNames, mode);
113}
114
115}
116
117

source code of qtscript/src/3rdparty/javascriptcore/JavaScriptCore/runtime/JSByteArray.cpp