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1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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72 MaybeObject* Accessors::ReadOnlySetAccessor(Isolate* isolate, | 72 MaybeObject* Accessors::ReadOnlySetAccessor(Isolate* isolate, |
73 JSObject*, | 73 JSObject*, |
74 Object* value, | 74 Object* value, |
75 void*) { | 75 void*) { |
76 // According to ECMA-262, section 8.6.2.2, page 28, setting | 76 // According to ECMA-262, section 8.6.2.2, page 28, setting |
77 // read-only properties must be silently ignored. | 77 // read-only properties must be silently ignored. |
78 return value; | 78 return value; |
79 } | 79 } |
80 | 80 |
81 | 81 |
82 static V8_INLINE bool CheckForName(Handle<String> name, | |
83 String* property_name, | |
84 int offset, | |
85 int* object_offset) { | |
86 if (name->Equals(property_name)) { | |
87 *object_offset = offset; | |
88 return true; | |
89 } | |
90 return false; | |
91 } | |
92 | |
93 | |
94 bool Accessors::IsJSObjectFieldAccessor(Handle<HeapType> type, | |
95 Handle<String> name, | |
96 int* object_offset) { | |
97 Isolate* isolate = name->GetIsolate(); | |
98 | |
99 if (type->Is(HeapType::String())) { | |
100 return CheckForName(name, isolate->heap()->length_string(), | |
101 String::kLengthOffset, object_offset); | |
102 } | |
103 | |
104 if (!type->IsClass()) return false; | |
105 Handle<Map> map = type->AsClass(); | |
106 | |
107 switch (map->instance_type()) { | |
108 case JS_ARRAY_TYPE: | |
109 return | |
110 CheckForName(name, isolate->heap()->length_string(), | |
111 JSArray::kLengthOffset, object_offset); | |
112 case JS_TYPED_ARRAY_TYPE: | |
113 return | |
114 CheckForName(name, isolate->heap()->length_string(), | |
115 JSTypedArray::kLengthOffset, object_offset) || | |
116 CheckForName(name, isolate->heap()->byte_length_string(), | |
117 JSTypedArray::kByteLengthOffset, object_offset) || | |
118 CheckForName(name, isolate->heap()->byte_offset_string(), | |
119 JSTypedArray::kByteOffsetOffset, object_offset) || | |
120 CheckForName(name, isolate->heap()->buffer_string(), | |
121 JSTypedArray::kBufferOffset, object_offset); | |
122 case JS_ARRAY_BUFFER_TYPE: | |
123 return | |
124 CheckForName(name, isolate->heap()->byte_length_string(), | |
125 JSArrayBuffer::kByteLengthOffset, object_offset); | |
126 case JS_DATA_VIEW_TYPE: | |
127 return | |
128 CheckForName(name, isolate->heap()->byte_length_string(), | |
129 JSDataView::kByteLengthOffset, object_offset) || | |
130 CheckForName(name, isolate->heap()->byte_offset_string(), | |
131 JSDataView::kByteOffsetOffset, object_offset) || | |
132 CheckForName(name, isolate->heap()->buffer_string(), | |
133 JSDataView::kBufferOffset, object_offset); | |
134 default: | |
135 return false; | |
136 } | |
137 } | |
138 | |
139 | |
140 // | 82 // |
141 // Accessors::ArrayLength | 83 // Accessors::ArrayLength |
142 // | 84 // |
143 | 85 |
144 | 86 |
145 MaybeObject* Accessors::ArrayGetLength(Isolate* isolate, | 87 MaybeObject* Accessors::ArrayGetLength(Isolate* isolate, |
146 Object* object, | 88 Object* object, |
147 void*) { | 89 void*) { |
148 // Traverse the prototype chain until we reach an array. | 90 // Traverse the prototype chain until we reach an array. |
149 JSArray* holder = FindInstanceOf<JSArray>(isolate, object); | 91 JSArray* holder = FindInstanceOf<JSArray>(isolate, object); |
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973 info->set_data(Smi::FromInt(index)); | 915 info->set_data(Smi::FromInt(index)); |
974 Handle<Object> getter = v8::FromCData(isolate, &ModuleGetExport); | 916 Handle<Object> getter = v8::FromCData(isolate, &ModuleGetExport); |
975 Handle<Object> setter = v8::FromCData(isolate, &ModuleSetExport); | 917 Handle<Object> setter = v8::FromCData(isolate, &ModuleSetExport); |
976 info->set_getter(*getter); | 918 info->set_getter(*getter); |
977 if (!(attributes & ReadOnly)) info->set_setter(*setter); | 919 if (!(attributes & ReadOnly)) info->set_setter(*setter); |
978 return info; | 920 return info; |
979 } | 921 } |
980 | 922 |
981 | 923 |
982 } } // namespace v8::internal | 924 } } // namespace v8::internal |
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