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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/runtime/runtime-utils.h" | 5 #include "src/runtime/runtime-utils.h" |
6 | 6 |
7 #include "src/arguments.h" | 7 #include "src/arguments.h" |
8 #include "src/bootstrapper.h" | 8 #include "src/bootstrapper.h" |
9 #include "src/debug/debug.h" | 9 #include "src/debug/debug.h" |
10 #include "src/isolate-inl.h" | 10 #include "src/isolate-inl.h" |
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788 } | 788 } |
789 | 789 |
790 | 790 |
791 RUNTIME_FUNCTION(Runtime_AllocateHeapNumber) { | 791 RUNTIME_FUNCTION(Runtime_AllocateHeapNumber) { |
792 HandleScope scope(isolate); | 792 HandleScope scope(isolate); |
793 DCHECK(args.length() == 0); | 793 DCHECK(args.length() == 0); |
794 return *isolate->factory()->NewHeapNumber(0); | 794 return *isolate->factory()->NewHeapNumber(0); |
795 } | 795 } |
796 | 796 |
797 | 797 |
798 static Object* Runtime_NewObjectHelper(Isolate* isolate, | |
799 Handle<JSFunction> constructor, | |
800 Handle<JSReceiver> new_target, | |
801 Handle<AllocationSite> site) { | |
802 DCHECK(constructor->IsConstructor()); | |
803 | |
804 // If called through new, new.target can be: | |
805 // - a subclass of constructor, | |
806 // - a proxy wrapper around constructor, or | |
807 // - the constructor itself. | |
808 // If called through Reflect.construct, it's guaranteed to be a constructor by | |
809 // REFLECT_CONSTRUCT_PREPARE. | |
810 DCHECK(new_target->IsConstructor()); | |
811 | |
812 DCHECK(!constructor->has_initial_map() || | |
813 constructor->initial_map()->instance_type() != JS_FUNCTION_TYPE); | |
814 | |
815 Handle<Map> initial_map; | |
816 ASSIGN_RETURN_FAILURE_ON_EXCEPTION( | |
817 isolate, initial_map, | |
818 JSFunction::GetDerivedMap(isolate, constructor, new_target)); | |
819 | |
820 Handle<JSObject> result = | |
821 isolate->factory()->NewJSObjectFromMap(initial_map, NOT_TENURED, site); | |
822 | |
823 isolate->counters()->constructed_objects()->Increment(); | |
824 isolate->counters()->constructed_objects_runtime()->Increment(); | |
825 | |
826 return *result; | |
827 } | |
828 | |
829 | |
830 RUNTIME_FUNCTION(Runtime_NewObject) { | 798 RUNTIME_FUNCTION(Runtime_NewObject) { |
831 HandleScope scope(isolate); | 799 HandleScope scope(isolate); |
832 DCHECK(args.length() == 2); | 800 DCHECK_EQ(2, args.length()); |
833 CONVERT_ARG_HANDLE_CHECKED(JSFunction, constructor, 0); | 801 CONVERT_ARG_HANDLE_CHECKED(JSFunction, target, 0); |
834 CONVERT_ARG_HANDLE_CHECKED(JSReceiver, new_target, 1); | 802 CONVERT_ARG_HANDLE_CHECKED(JSReceiver, new_target, 1); |
835 | 803 Handle<JSObject> result; |
836 return Runtime_NewObjectHelper(isolate, constructor, new_target, | 804 ASSIGN_RETURN_FAILURE_ON_EXCEPTION(isolate, result, |
837 Handle<AllocationSite>::null()); | 805 JSObject::New(target, new_target)); |
| 806 return *result; |
838 } | 807 } |
839 | 808 |
840 | 809 |
841 RUNTIME_FUNCTION(Runtime_FinalizeInstanceSize) { | 810 RUNTIME_FUNCTION(Runtime_FinalizeInstanceSize) { |
842 HandleScope scope(isolate); | 811 HandleScope scope(isolate); |
843 DCHECK(args.length() == 1); | 812 DCHECK(args.length() == 1); |
844 | 813 |
845 CONVERT_ARG_HANDLE_CHECKED(Map, initial_map, 0); | 814 CONVERT_ARG_HANDLE_CHECKED(Map, initial_map, 0); |
846 initial_map->CompleteInobjectSlackTracking(); | 815 initial_map->CompleteInobjectSlackTracking(); |
847 | 816 |
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1349 DCHECK(args.length() == 2); | 1318 DCHECK(args.length() == 2); |
1350 CONVERT_ARG_HANDLE_CHECKED(Object, o, 0); | 1319 CONVERT_ARG_HANDLE_CHECKED(Object, o, 0); |
1351 CONVERT_ARG_HANDLE_CHECKED(Object, properties, 1); | 1320 CONVERT_ARG_HANDLE_CHECKED(Object, properties, 1); |
1352 ASSIGN_RETURN_FAILURE_ON_EXCEPTION( | 1321 ASSIGN_RETURN_FAILURE_ON_EXCEPTION( |
1353 isolate, o, JSReceiver::DefineProperties(isolate, o, properties)); | 1322 isolate, o, JSReceiver::DefineProperties(isolate, o, properties)); |
1354 return *o; | 1323 return *o; |
1355 } | 1324 } |
1356 | 1325 |
1357 } // namespace internal | 1326 } // namespace internal |
1358 } // namespace v8 | 1327 } // namespace v8 |
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