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1 // Copyright 2006-2009 the V8 project authors. All rights reserved. | 1 // Copyright 2006-2009 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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552 | 552 |
553 | 553 |
554 static Object* Runtime_IsConstructCall(Arguments args) { | 554 static Object* Runtime_IsConstructCall(Arguments args) { |
555 NoHandleAllocation ha; | 555 NoHandleAllocation ha; |
556 ASSERT(args.length() == 0); | 556 ASSERT(args.length() == 0); |
557 JavaScriptFrameIterator it; | 557 JavaScriptFrameIterator it; |
558 return Heap::ToBoolean(it.frame()->IsConstructor()); | 558 return Heap::ToBoolean(it.frame()->IsConstructor()); |
559 } | 559 } |
560 | 560 |
561 | 561 |
| 562 // Recursively traverses hidden prototypes if property is not found |
| 563 static void GetOwnPropertyImplementation(JSObject* obj, |
| 564 String* name, |
| 565 LookupResult* result) { |
| 566 obj->LocalLookupRealNamedProperty(name, result); |
| 567 |
| 568 if (!result->IsProperty()) { |
| 569 Object* proto = obj->GetPrototype(); |
| 570 if (proto->IsJSObject() && |
| 571 JSObject::cast(proto)->map()->is_hidden_prototype()) |
| 572 GetOwnPropertyImplementation(JSObject::cast(proto), |
| 573 name, result); |
| 574 } |
| 575 } |
| 576 |
| 577 |
| 578 // Returns an array with the property description: |
| 579 // if args[1] is not a property on args[0] |
| 580 // returns undefined |
| 581 // if args[1] is a data property on args[0] |
| 582 // [false, value, Writeable, Enumerable, Configurable] |
| 583 // if args[1] is an accessor on args[0] |
| 584 // [true, GetFunction, SetFunction, Enumerable, Configurable] |
| 585 static Object* Runtime_GetOwnProperty(Arguments args) { |
| 586 HandleScope scope; |
| 587 Handle<FixedArray> elms = Factory::NewFixedArray(5); |
| 588 Handle<JSArray> desc = Factory::NewJSArrayWithElements(elms); |
| 589 LookupResult result; |
| 590 CONVERT_CHECKED(JSObject, obj, args[0]); |
| 591 CONVERT_CHECKED(String, name, args[1]); |
| 592 |
| 593 // Use recursive implementation to also traverse hidden prototypes |
| 594 GetOwnPropertyImplementation(obj, name, &result); |
| 595 |
| 596 if (!result.IsProperty()) |
| 597 return Heap::undefined_value(); |
| 598 |
| 599 if (result.type() == CALLBACKS) { |
| 600 elms->set(0, Heap::true_value()); |
| 601 Object* structure = result.GetCallbackObject(); |
| 602 if (structure->IsProxy()) { |
| 603 Object* value = obj->GetPropertyWithCallback( |
| 604 obj, structure, name, result.holder()); |
| 605 elms->set(1, value); |
| 606 elms->set(2, Heap::ToBoolean(!result.IsReadOnly())); |
| 607 } else { |
| 608 elms->set(1, FixedArray::cast(structure)->get(0)); |
| 609 elms->set(2, FixedArray::cast(structure)->get(1)); |
| 610 } |
| 611 } else { |
| 612 elms->set(0, Heap::false_value()); |
| 613 elms->set(1, result.GetLazyValue()); |
| 614 elms->set(2, Heap::ToBoolean(!result.IsReadOnly())); |
| 615 } |
| 616 |
| 617 elms->set(3, Heap::ToBoolean(!result.IsDontEnum())); |
| 618 elms->set(4, Heap::ToBoolean(!result.IsReadOnly())); |
| 619 return *desc; |
| 620 } |
| 621 |
| 622 |
562 static Object* Runtime_RegExpCompile(Arguments args) { | 623 static Object* Runtime_RegExpCompile(Arguments args) { |
563 HandleScope scope; | 624 HandleScope scope; |
564 ASSERT(args.length() == 3); | 625 ASSERT(args.length() == 3); |
565 CONVERT_ARG_CHECKED(JSRegExp, re, 0); | 626 CONVERT_ARG_CHECKED(JSRegExp, re, 0); |
566 CONVERT_ARG_CHECKED(String, pattern, 1); | 627 CONVERT_ARG_CHECKED(String, pattern, 1); |
567 CONVERT_ARG_CHECKED(String, flags, 2); | 628 CONVERT_ARG_CHECKED(String, flags, 2); |
568 Handle<Object> result = RegExpImpl::Compile(re, pattern, flags); | 629 Handle<Object> result = RegExpImpl::Compile(re, pattern, flags); |
569 if (result.is_null()) return Failure::Exception(); | 630 if (result.is_null()) return Failure::Exception(); |
570 return *result; | 631 return *result; |
571 } | 632 } |
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8083 } else { | 8144 } else { |
8084 // Handle last resort GC and make sure to allow future allocations | 8145 // Handle last resort GC and make sure to allow future allocations |
8085 // to grow the heap without causing GCs (if possible). | 8146 // to grow the heap without causing GCs (if possible). |
8086 Counters::gc_last_resort_from_js.Increment(); | 8147 Counters::gc_last_resort_from_js.Increment(); |
8087 Heap::CollectAllGarbage(false); | 8148 Heap::CollectAllGarbage(false); |
8088 } | 8149 } |
8089 } | 8150 } |
8090 | 8151 |
8091 | 8152 |
8092 } } // namespace v8::internal | 8153 } } // namespace v8::internal |
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