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1 // Copyright 2014 the V8 project authors. All rights reserved. | 1 // Copyright 2014 the V8 project authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "src/factory.h" | 5 #include "src/factory.h" |
6 | 6 |
7 #include "src/accessors.h" | 7 #include "src/accessors.h" |
8 #include "src/allocation-site-scopes.h" | 8 #include "src/allocation-site-scopes.h" |
9 #include "src/ast/ast.h" | 9 #include "src/ast/ast.h" |
10 #include "src/base/bits.h" | 10 #include "src/base/bits.h" |
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2720 function_mode == FUNCTION_WITH_WRITEABLE_PROTOTYPE ? rw_attribs | 2720 function_mode == FUNCTION_WITH_WRITEABLE_PROTOTYPE ? rw_attribs |
2721 : ro_attribs; | 2721 : ro_attribs; |
2722 Handle<AccessorInfo> prototype = | 2722 Handle<AccessorInfo> prototype = |
2723 Accessors::FunctionPrototypeInfo(isolate(), attribs); | 2723 Accessors::FunctionPrototypeInfo(isolate(), attribs); |
2724 AccessorConstantDescriptor d(Handle<Name>(Name::cast(prototype->name())), | 2724 AccessorConstantDescriptor d(Handle<Name>(Name::cast(prototype->name())), |
2725 prototype, attribs); | 2725 prototype, attribs); |
2726 map->AppendDescriptor(&d); | 2726 map->AppendDescriptor(&d); |
2727 } | 2727 } |
2728 } | 2728 } |
2729 | 2729 |
| 2730 Handle<Map> Factory::CreateClassFunctionMap(Handle<JSFunction> empty_function) { |
| 2731 Handle<Map> map = NewMap(JS_FUNCTION_TYPE, JSFunction::kSize); |
| 2732 SetClassFunctionInstanceDescriptor(map); |
| 2733 map->set_is_constructor(true); |
| 2734 map->set_is_callable(); |
| 2735 Map::SetPrototype(map, empty_function); |
| 2736 return map; |
| 2737 } |
| 2738 |
| 2739 void Factory::SetClassFunctionInstanceDescriptor(Handle<Map> map) { |
| 2740 Map::EnsureDescriptorSlack(map, 2); |
| 2741 |
| 2742 PropertyAttributes rw_attribs = |
| 2743 static_cast<PropertyAttributes>(DONT_ENUM | DONT_DELETE); |
| 2744 PropertyAttributes roc_attribs = |
| 2745 static_cast<PropertyAttributes>(DONT_ENUM | READ_ONLY); |
| 2746 |
| 2747 STATIC_ASSERT(JSFunction::kLengthDescriptorIndex == 0); |
| 2748 { // Add length. |
| 2749 Handle<AccessorInfo> length = |
| 2750 Accessors::FunctionLengthInfo(isolate(), roc_attribs); |
| 2751 AccessorConstantDescriptor d(handle(Name::cast(length->name())), length, |
| 2752 roc_attribs); |
| 2753 map->AppendDescriptor(&d); |
| 2754 } |
| 2755 |
| 2756 { |
| 2757 // Add prototype. |
| 2758 Handle<AccessorInfo> prototype = |
| 2759 Accessors::FunctionPrototypeInfo(isolate(), rw_attribs); |
| 2760 AccessorConstantDescriptor d(Handle<Name>(Name::cast(prototype->name())), |
| 2761 prototype, rw_attribs); |
| 2762 map->AppendDescriptor(&d); |
| 2763 } |
| 2764 } |
| 2765 |
2730 Handle<JSFixedArrayIterator> Factory::NewJSFixedArrayIterator( | 2766 Handle<JSFixedArrayIterator> Factory::NewJSFixedArrayIterator( |
2731 Handle<FixedArray> array) { | 2767 Handle<FixedArray> array) { |
2732 // Create the "next" function (must be unique per iterator object). | 2768 // Create the "next" function (must be unique per iterator object). |
2733 Handle<Code> code( | 2769 Handle<Code> code( |
2734 isolate()->builtins()->builtin(Builtins::kFixedArrayIteratorNext)); | 2770 isolate()->builtins()->builtin(Builtins::kFixedArrayIteratorNext)); |
2735 // TODO(neis): Don't create a new SharedFunctionInfo each time. | 2771 // TODO(neis): Don't create a new SharedFunctionInfo each time. |
2736 Handle<JSFunction> next = isolate()->factory()->NewFunctionWithoutPrototype( | 2772 Handle<JSFunction> next = isolate()->factory()->NewFunctionWithoutPrototype( |
2737 isolate()->factory()->next_string(), code, false); | 2773 isolate()->factory()->next_string(), code, false); |
2738 next->shared()->set_native(true); | 2774 next->shared()->set_native(true); |
2739 | 2775 |
2740 // Create the iterator. | 2776 // Create the iterator. |
2741 Handle<Map> map(isolate()->native_context()->fixed_array_iterator_map()); | 2777 Handle<Map> map(isolate()->native_context()->fixed_array_iterator_map()); |
2742 Handle<JSFixedArrayIterator> iterator = | 2778 Handle<JSFixedArrayIterator> iterator = |
2743 Handle<JSFixedArrayIterator>::cast(NewJSObjectFromMap(map)); | 2779 Handle<JSFixedArrayIterator>::cast(NewJSObjectFromMap(map)); |
2744 iterator->set_initial_next(*next); | 2780 iterator->set_initial_next(*next); |
2745 iterator->set_array(*array); | 2781 iterator->set_array(*array); |
2746 iterator->set_index(0); | 2782 iterator->set_index(0); |
2747 iterator->InObjectPropertyAtPut(JSFixedArrayIterator::kNextIndex, *next); | 2783 iterator->InObjectPropertyAtPut(JSFixedArrayIterator::kNextIndex, *next); |
2748 return iterator; | 2784 return iterator; |
2749 } | 2785 } |
2750 | 2786 |
2751 } // namespace internal | 2787 } // namespace internal |
2752 } // namespace v8 | 2788 } // namespace v8 |
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