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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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707 CONVERT_ARG_HANDLE_CHECKED(Name, key, 1); | 707 CONVERT_ARG_HANDLE_CHECKED(Name, key, 1); |
708 | 708 |
709 Maybe<PropertyAttributes> maybe = | 709 Maybe<PropertyAttributes> maybe = |
710 JSReceiver::GetOwnPropertyAttributes(object, key); | 710 JSReceiver::GetOwnPropertyAttributes(object, key); |
711 if (!maybe.IsJust()) return isolate->heap()->exception(); | 711 if (!maybe.IsJust()) return isolate->heap()->exception(); |
712 if (maybe.FromJust() == ABSENT) return isolate->heap()->false_value(); | 712 if (maybe.FromJust() == ABSENT) return isolate->heap()->false_value(); |
713 return isolate->heap()->ToBoolean((maybe.FromJust() & DONT_ENUM) == 0); | 713 return isolate->heap()->ToBoolean((maybe.FromJust() & DONT_ENUM) == 0); |
714 } | 714 } |
715 | 715 |
716 | 716 |
717 // Returns either a FixedArray or, if the given object has an enum cache that | |
718 // contains all enumerable properties of the object and its prototypes have | |
719 // none, the map of the object. This is used to speed up the check for | |
720 // deletions during a for-in. | |
721 RUNTIME_FUNCTION(Runtime_GetPropertyNamesFast) { | |
722 SealHandleScope shs(isolate); | |
723 DCHECK(args.length() == 1); | |
724 | |
725 CONVERT_ARG_CHECKED(JSReceiver, raw_object, 0); | |
726 | |
727 if (raw_object->IsSimpleEnum()) return raw_object->map(); | |
728 | |
729 HandleScope scope(isolate); | |
730 Handle<JSReceiver> object(raw_object); | |
731 Handle<FixedArray> content; | |
732 ASSIGN_RETURN_FAILURE_ON_EXCEPTION( | |
733 isolate, content, JSReceiver::GetKeys(object, JSReceiver::INCLUDE_PROTOS, | |
734 ENUMERABLE_STRINGS)); | |
735 | |
736 // Test again, since cache may have been built by preceding call. | |
737 if (object->IsSimpleEnum()) return object->map(); | |
738 | |
739 return *content; | |
740 } | |
741 | |
742 | |
743 RUNTIME_FUNCTION(Runtime_GetOwnPropertyKeys) { | 717 RUNTIME_FUNCTION(Runtime_GetOwnPropertyKeys) { |
744 HandleScope scope(isolate); | 718 HandleScope scope(isolate); |
745 DCHECK(args.length() == 2); | 719 DCHECK(args.length() == 2); |
746 CONVERT_ARG_HANDLE_CHECKED(JSReceiver, object, 0); | 720 CONVERT_ARG_HANDLE_CHECKED(JSReceiver, object, 0); |
747 CONVERT_SMI_ARG_CHECKED(filter_value, 1); | 721 CONVERT_SMI_ARG_CHECKED(filter_value, 1); |
748 PropertyFilter filter = static_cast<PropertyFilter>(filter_value); | 722 PropertyFilter filter = static_cast<PropertyFilter>(filter_value); |
749 | 723 |
750 Handle<FixedArray> keys; | 724 Handle<FixedArray> keys; |
751 ASSIGN_RETURN_FAILURE_ON_EXCEPTION( | 725 ASSIGN_RETURN_FAILURE_ON_EXCEPTION( |
752 isolate, keys, JSReceiver::GetKeys(object, JSReceiver::OWN_ONLY, filter, | 726 isolate, keys, JSReceiver::GetKeys(object, JSReceiver::OWN_ONLY, filter, |
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1314 DCHECK(args.length() == 2); | 1288 DCHECK(args.length() == 2); |
1315 CONVERT_ARG_HANDLE_CHECKED(Object, o, 0); | 1289 CONVERT_ARG_HANDLE_CHECKED(Object, o, 0); |
1316 CONVERT_ARG_HANDLE_CHECKED(Object, properties, 1); | 1290 CONVERT_ARG_HANDLE_CHECKED(Object, properties, 1); |
1317 ASSIGN_RETURN_FAILURE_ON_EXCEPTION( | 1291 ASSIGN_RETURN_FAILURE_ON_EXCEPTION( |
1318 isolate, o, JSReceiver::DefineProperties(isolate, o, properties)); | 1292 isolate, o, JSReceiver::DefineProperties(isolate, o, properties)); |
1319 return *o; | 1293 return *o; |
1320 } | 1294 } |
1321 | 1295 |
1322 } // namespace internal | 1296 } // namespace internal |
1323 } // namespace v8 | 1297 } // namespace v8 |
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