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