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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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| 141 MaybeObject* Accessors::ArrayGetLength(Isolate* isolate, | 141 MaybeObject* Accessors::ArrayGetLength(Isolate* isolate, |
| 142 Object* object, | 142 Object* object, |
| 143 void*) { | 143 void*) { |
| 144 // Traverse the prototype chain until we reach an array. | 144 // Traverse the prototype chain until we reach an array. |
| 145 JSArray* holder = FindInstanceOf<JSArray>(isolate, object); | 145 JSArray* holder = FindInstanceOf<JSArray>(isolate, object); |
| 146 return holder == NULL ? Smi::FromInt(0) : holder->length(); | 146 return holder == NULL ? Smi::FromInt(0) : holder->length(); |
| 147 } | 147 } |
| 148 | 148 |
| 149 | 149 |
| 150 // The helper function will 'flatten' Number objects. | 150 // The helper function will 'flatten' Number objects. |
| 151 Object* Accessors::FlattenNumber(Isolate* isolate, Object* value) { | 151 Handle<Object> Accessors::FlattenNumber(Isolate* isolate, |
| 152 Handle<Object> value) { |
| 152 if (value->IsNumber() || !value->IsJSValue()) return value; | 153 if (value->IsNumber() || !value->IsJSValue()) return value; |
| 153 JSValue* wrapper = JSValue::cast(value); | 154 Handle<JSValue> wrapper = Handle<JSValue>::cast(value); |
| 154 ASSERT(wrapper->GetIsolate()->context()->native_context()->number_function()-> | 155 ASSERT(wrapper->GetIsolate()->context()->native_context()->number_function()-> |
| 155 has_initial_map()); | 156 has_initial_map()); |
| 156 Map* number_map = isolate->context()->native_context()-> | 157 if (wrapper->map() == |
| 157 number_function()->initial_map(); | 158 isolate->context()->native_context()->number_function()->initial_map()) { |
| 158 if (wrapper->map() == number_map) return wrapper->value(); | 159 return handle(wrapper->value(), isolate); |
| 160 } |
| 161 |
| 159 return value; | 162 return value; |
| 160 } | 163 } |
| 161 | 164 |
| 162 | 165 |
| 163 MaybeObject* Accessors::ArraySetLength(Isolate* isolate, | 166 MaybeObject* Accessors::ArraySetLength(Isolate* isolate, |
| 164 JSObject* object, | 167 JSObject* object_raw, |
| 165 Object* value, | 168 Object* value_raw, |
| 166 void*) { | 169 void*) { |
| 170 HandleScope scope(isolate); |
| 171 Handle<JSObject> object(object_raw, isolate); |
| 172 Handle<Object> value(value_raw, isolate); |
| 173 |
| 167 // This means one of the object's prototypes is a JSArray and the | 174 // This means one of the object's prototypes is a JSArray and the |
| 168 // object does not have a 'length' property. Calling SetProperty | 175 // object does not have a 'length' property. Calling SetProperty |
| 169 // causes an infinite loop. | 176 // causes an infinite loop. |
| 170 if (!object->IsJSArray()) { | 177 if (!object->IsJSArray()) { |
| 171 return object->SetLocalPropertyIgnoreAttributesTrampoline( | 178 Handle<Object> result = JSObject::SetLocalPropertyIgnoreAttributes(object, |
| 172 isolate->heap()->length_string(), value, NONE); | 179 isolate->factory()->length_string(), value, NONE); |
| 180 RETURN_IF_EMPTY_HANDLE(isolate, result); |
| 181 return *result; |
| 173 } | 182 } |
| 174 | 183 |
| 175 value = FlattenNumber(isolate, value); | 184 value = FlattenNumber(isolate, value); |
| 176 | 185 |
| 177 // Need to call methods that may trigger GC. | 186 Handle<JSArray> array_handle = Handle<JSArray>::cast(object); |
| 178 HandleScope scope(isolate); | |
| 179 | |
| 180 // Protect raw pointers. | |
| 181 Handle<JSArray> array_handle(JSArray::cast(object), isolate); | |
| 182 Handle<Object> value_handle(value, isolate); | |
| 183 | 187 |
| 184 bool has_exception; | 188 bool has_exception; |
| 185 Handle<Object> uint32_v = | 189 Handle<Object> uint32_v = |
| 186 Execution::ToUint32(isolate, value_handle, &has_exception); | 190 Execution::ToUint32(isolate, value, &has_exception); |
| 187 if (has_exception) return Failure::Exception(); | 191 if (has_exception) return Failure::Exception(); |
| 188 Handle<Object> number_v = | 192 Handle<Object> number_v = |
| 189 Execution::ToNumber(isolate, value_handle, &has_exception); | 193 Execution::ToNumber(isolate, value, &has_exception); |
| 190 if (has_exception) return Failure::Exception(); | 194 if (has_exception) return Failure::Exception(); |
| 191 | 195 |
| 192 if (uint32_v->Number() == number_v->Number()) { | 196 if (uint32_v->Number() == number_v->Number()) { |
| 193 return array_handle->SetElementsLength(*uint32_v); | 197 return array_handle->SetElementsLength(*uint32_v); |
| 194 } | 198 } |
| 195 return isolate->Throw( | 199 return isolate->Throw( |
| 196 *isolate->factory()->NewRangeError("invalid_array_length", | 200 *isolate->factory()->NewRangeError("invalid_array_length", |
| 197 HandleVector<Object>(NULL, 0))); | 201 HandleVector<Object>(NULL, 0))); |
| 198 } | 202 } |
| 199 | 203 |
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| 571 Handle<JSFunction> function(function_raw); | 575 Handle<JSFunction> function(function_raw); |
| 572 Handle<Object> proto = isolate->factory()->NewFunctionPrototype(function); | 576 Handle<Object> proto = isolate->factory()->NewFunctionPrototype(function); |
| 573 JSFunction::SetPrototype(function, proto); | 577 JSFunction::SetPrototype(function, proto); |
| 574 function_raw = *function; | 578 function_raw = *function; |
| 575 } | 579 } |
| 576 return function_raw->prototype(); | 580 return function_raw->prototype(); |
| 577 } | 581 } |
| 578 | 582 |
| 579 | 583 |
| 580 MaybeObject* Accessors::FunctionSetPrototype(Isolate* isolate, | 584 MaybeObject* Accessors::FunctionSetPrototype(Isolate* isolate, |
| 581 JSObject* object, | 585 JSObject* object_raw, |
| 582 Object* value_raw, | 586 Object* value_raw, |
| 583 void*) { | 587 void*) { |
| 584 Heap* heap = isolate->heap(); | 588 JSFunction* function_raw = FindInstanceOf<JSFunction>(isolate, object_raw); |
| 585 JSFunction* function_raw = FindInstanceOf<JSFunction>(isolate, object); | 589 if (function_raw == NULL) return isolate->heap()->undefined_value(); |
| 586 if (function_raw == NULL) return heap->undefined_value(); | |
| 587 if (!function_raw->should_have_prototype()) { | |
| 588 // Since we hit this accessor, object will have no prototype property. | |
| 589 return object->SetLocalPropertyIgnoreAttributesTrampoline( | |
| 590 heap->prototype_string(), value_raw, NONE); | |
| 591 } | |
| 592 | 590 |
| 593 HandleScope scope(isolate); | 591 HandleScope scope(isolate); |
| 594 Handle<JSFunction> function(function_raw, isolate); | 592 Handle<JSFunction> function(function_raw, isolate); |
| 593 Handle<JSObject> object(object_raw, isolate); |
| 595 Handle<Object> value(value_raw, isolate); | 594 Handle<Object> value(value_raw, isolate); |
| 595 if (!function->should_have_prototype()) { |
| 596 // Since we hit this accessor, object will have no prototype property. |
| 597 Handle<Object> result = JSObject::SetLocalPropertyIgnoreAttributes(object, |
| 598 isolate->factory()->prototype_string(), value, NONE); |
| 599 RETURN_IF_EMPTY_HANDLE(isolate, result); |
| 600 return *result; |
| 601 } |
| 596 | 602 |
| 597 Handle<Object> old_value; | 603 Handle<Object> old_value; |
| 598 bool is_observed = | 604 bool is_observed = |
| 599 FLAG_harmony_observation && | 605 FLAG_harmony_observation && |
| 600 *function == object && | 606 *function == *object && |
| 601 function->map()->is_observed(); | 607 function->map()->is_observed(); |
| 602 if (is_observed) { | 608 if (is_observed) { |
| 603 if (function->has_prototype()) | 609 if (function->has_prototype()) |
| 604 old_value = handle(function->prototype(), isolate); | 610 old_value = handle(function->prototype(), isolate); |
| 605 else | 611 else |
| 606 old_value = isolate->factory()->NewFunctionPrototype(function); | 612 old_value = isolate->factory()->NewFunctionPrototype(function); |
| 607 } | 613 } |
| 608 | 614 |
| 609 JSFunction::SetPrototype(function, value); | 615 JSFunction::SetPrototype(function, value); |
| 610 ASSERT(function->prototype() == *value); | 616 ASSERT(function->prototype() == *value); |
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| 962 info->set_data(Smi::FromInt(index)); | 968 info->set_data(Smi::FromInt(index)); |
| 963 Handle<Object> getter = v8::FromCData(isolate, &ModuleGetExport); | 969 Handle<Object> getter = v8::FromCData(isolate, &ModuleGetExport); |
| 964 Handle<Object> setter = v8::FromCData(isolate, &ModuleSetExport); | 970 Handle<Object> setter = v8::FromCData(isolate, &ModuleSetExport); |
| 965 info->set_getter(*getter); | 971 info->set_getter(*getter); |
| 966 if (!(attributes & ReadOnly)) info->set_setter(*setter); | 972 if (!(attributes & ReadOnly)) info->set_setter(*setter); |
| 967 return info; | 973 return info; |
| 968 } | 974 } |
| 969 | 975 |
| 970 | 976 |
| 971 } } // namespace v8::internal | 977 } } // namespace v8::internal |
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