Implement for-in loop for proxies.

src/api.cc

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 2856 matching lines @@
 }
 
 
 Local<Array> v8::Object::GetPropertyNames() {
   i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
   ON_BAILOUT(isolate, "v8::Object::GetPropertyNames()",
              return Local<v8::Array>());
   ENTER_V8(isolate);
   i::HandleScope scope(isolate);
   i::Handle<i::JSObject> self = Utils::OpenHandle(this);
+  bool threw = false;
   i::Handle<i::FixedArray> value =
-      i::GetKeysInFixedArrayFor(self, i::INCLUDE_PROTOS);
+      i::GetKeysInFixedArrayFor(self, i::INCLUDE_PROTOS, &threw);
+  if (threw) return Local<v8::Array>();
   // Because we use caching to speed up enumeration it is important
   // to never change the result of the basic enumeration function so
   // we clone the result.
   i::Handle<i::FixedArray> elms = isolate->factory()->CopyFixedArray(value);
   i::Handle<i::JSArray> result =
       isolate->factory()->NewJSArrayWithElements(elms);
   return Utils::ToLocal(scope.CloseAndEscape(result));
 }
 
 
 Local<Array> v8::Object::GetOwnPropertyNames() {
   i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
   ON_BAILOUT(isolate, "v8::Object::GetOwnPropertyNames()",
              return Local<v8::Array>());
   ENTER_V8(isolate);
   i::HandleScope scope(isolate);
   i::Handle<i::JSObject> self = Utils::OpenHandle(this);
+  bool threw = false;
   i::Handle<i::FixedArray> value =
-      i::GetKeysInFixedArrayFor(self, i::LOCAL_ONLY);
+      i::GetKeysInFixedArrayFor(self, i::LOCAL_ONLY, &threw);
+  if (threw) return Local<v8::Array>();
   // Because we use caching to speed up enumeration it is important
   // to never change the result of the basic enumeration function so
   // we clone the result.
   i::Handle<i::FixedArray> elms = isolate->factory()->CopyFixedArray(value);
   i::Handle<i::JSArray> result =
       isolate->factory()->NewJSArrayWithElements(elms);
   return Utils::ToLocal(scope.CloseAndEscape(result));
 }
 
 
@@ skipping 3157 matching lines @@
 
 
 char* HandleScopeImplementer::Iterate(ObjectVisitor* v, char* storage) {
   HandleScopeImplementer* scope_implementer =
       reinterpret_cast<HandleScopeImplementer*>(storage);
   scope_implementer->IterateThis(v);
   return storage + ArchiveSpacePerThread();
 }
 
 } }  // namespace v8::internal