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Issue 7056041: Reapply: "Make instanceof and Object.getPrototypeOf work for proxies, (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Fix for Runtime_GetPrototype Created 9 years, 6 months ago
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1 // Copyright 2011 the V8 project authors. All rights reserved. 1 // Copyright 2011 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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587 } 587 }
588 return isolate->heap()->CopyJSObject(JSObject::cast(*boilerplate)); 588 return isolate->heap()->CopyJSObject(JSObject::cast(*boilerplate));
589 } 589 }
590 590
591 591
592 RUNTIME_FUNCTION(MaybeObject*, Runtime_CreateJSProxy) { 592 RUNTIME_FUNCTION(MaybeObject*, Runtime_CreateJSProxy) {
593 ASSERT(args.length() == 2); 593 ASSERT(args.length() == 2);
594 Object* handler = args[0]; 594 Object* handler = args[0];
595 Object* prototype = args[1]; 595 Object* prototype = args[1];
596 Object* used_prototype = 596 Object* used_prototype =
597 (prototype->IsJSObject() || prototype->IsJSProxy()) ? prototype 597 prototype->IsJSReceiver() ? prototype : isolate->heap()->null_value();
598 : isolate->heap()->null_value();
599 return isolate->heap()->AllocateJSProxy(handler, used_prototype); 598 return isolate->heap()->AllocateJSProxy(handler, used_prototype);
600 } 599 }
601 600
602 601
602 RUNTIME_FUNCTION(MaybeObject*, Runtime_IsJSProxy) {
603 ASSERT(args.length() == 1);
604 Object* obj = args[0];
605 return obj->IsJSProxy()
606 ? isolate->heap()->true_value() : isolate->heap()->false_value();
607 }
608
609
610 RUNTIME_FUNCTION(MaybeObject*, Runtime_GetHandler) {
611 ASSERT(args.length() == 1);
612 CONVERT_CHECKED(JSProxy, proxy, args[0]);
613 return proxy->handler();
614 }
615
616
603 RUNTIME_FUNCTION(MaybeObject*, Runtime_CreateCatchExtensionObject) { 617 RUNTIME_FUNCTION(MaybeObject*, Runtime_CreateCatchExtensionObject) {
604 ASSERT(args.length() == 2); 618 ASSERT(args.length() == 2);
605 CONVERT_CHECKED(String, key, args[0]); 619 CONVERT_CHECKED(String, key, args[0]);
606 Object* value = args[1]; 620 Object* value = args[1];
607 ASSERT(!value->IsFailure()); 621 ASSERT(!value->IsFailure());
608 // Create a catch context extension object. 622 // Create a catch context extension object.
609 JSFunction* constructor = 623 JSFunction* constructor =
610 isolate->context()->global_context()-> 624 isolate->context()->global_context()->
611 context_extension_function(); 625 context_extension_function();
612 Object* object; 626 Object* object;
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627 641
628 RUNTIME_FUNCTION(MaybeObject*, Runtime_ClassOf) { 642 RUNTIME_FUNCTION(MaybeObject*, Runtime_ClassOf) {
629 NoHandleAllocation ha; 643 NoHandleAllocation ha;
630 ASSERT(args.length() == 1); 644 ASSERT(args.length() == 1);
631 Object* obj = args[0]; 645 Object* obj = args[0];
632 if (!obj->IsJSObject()) return isolate->heap()->null_value(); 646 if (!obj->IsJSObject()) return isolate->heap()->null_value();
633 return JSObject::cast(obj)->class_name(); 647 return JSObject::cast(obj)->class_name();
634 } 648 }
635 649
636 650
651 RUNTIME_FUNCTION(MaybeObject*, Runtime_GetPrototype) {
652 NoHandleAllocation ha;
653 ASSERT(args.length() == 1);
654 Object* obj = args[0];
655 obj = obj->GetPrototype();
656 while (obj->IsJSObject() &&
Kevin Millikin (Chromium) 2011/06/03 09:52:48 Maybe clearer with do...while, if you like that so
657 JSObject::cast(obj)->map()->is_hidden_prototype()) {
658 obj = obj->GetPrototype();
659 }
660 return obj;
661 }
662
663
637 RUNTIME_FUNCTION(MaybeObject*, Runtime_IsInPrototypeChain) { 664 RUNTIME_FUNCTION(MaybeObject*, Runtime_IsInPrototypeChain) {
638 NoHandleAllocation ha; 665 NoHandleAllocation ha;
639 ASSERT(args.length() == 2); 666 ASSERT(args.length() == 2);
640 // See ECMA-262, section 15.3.5.3, page 88 (steps 5 - 8). 667 // See ECMA-262, section 15.3.5.3, page 88 (steps 5 - 8).
641 Object* O = args[0]; 668 Object* O = args[0];
642 Object* V = args[1]; 669 Object* V = args[1];
643 while (true) { 670 while (true) {
644 Object* prototype = V->GetPrototype(); 671 Object* prototype = V->GetPrototype();
645 if (prototype->IsNull()) return isolate->heap()->false_value(); 672 if (prototype->IsNull()) return isolate->heap()->false_value();
646 if (O == prototype) return isolate->heap()->true_value(); 673 if (O == prototype) return isolate->heap()->true_value();
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12324 } else { 12351 } else {
12325 // Handle last resort GC and make sure to allow future allocations 12352 // Handle last resort GC and make sure to allow future allocations
12326 // to grow the heap without causing GCs (if possible). 12353 // to grow the heap without causing GCs (if possible).
12327 isolate->counters()->gc_last_resort_from_js()->Increment(); 12354 isolate->counters()->gc_last_resort_from_js()->Increment();
12328 isolate->heap()->CollectAllGarbage(false); 12355 isolate->heap()->CollectAllGarbage(false);
12329 } 12356 }
12330 } 12357 }
12331 12358
12332 12359
12333 } } // namespace v8::internal 12360 } } // namespace v8::internal
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