[es6] Partially implement Reflect.setPrototypeOf.

src/runtime/runtime-object.cc

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/runtime/runtime-utils.h"
 
 #include "src/arguments.h"
 #include "src/bootstrapper.h"
 #include "src/debug/debug.h"
 #include "src/isolate-inl.h"
@@ skipping 146 matching lines @@
   HandleScope scope(isolate);
   DCHECK(args.length() == 1);
   CONVERT_ARG_HANDLE_CHECKED(Object, obj, 0);
   return *Object::GetPrototype(isolate, obj);
 }
 
 
 RUNTIME_FUNCTION(Runtime_InternalSetPrototype) {
   HandleScope scope(isolate);
   DCHECK(args.length() == 2);
-  CONVERT_ARG_HANDLE_CHECKED(JSObject, obj, 0);
+  CONVERT_ARG_HANDLE_CHECKED(JSReceiver, obj, 0);
   CONVERT_ARG_HANDLE_CHECKED(Object, prototype, 1);
-  Handle<Object> result;
-  ASSIGN_RETURN_FAILURE_ON_EXCEPTION(
-      isolate, result, JSObject::SetPrototype(obj, prototype, false));
-  return *result;
+  MAYBE_RETURN(JSReceiver::SetPrototype(obj, prototype, false, THROW_ON_ERROR),
+               isolate->heap()->exception());
+  return *obj;
 }
 
 
 RUNTIME_FUNCTION(Runtime_SetPrototype) {
   HandleScope scope(isolate);
   DCHECK(args.length() == 2);
-  CONVERT_ARG_HANDLE_CHECKED(JSObject, obj, 0);
+  CONVERT_ARG_HANDLE_CHECKED(JSReceiver, obj, 0);
   CONVERT_ARG_HANDLE_CHECKED(Object, prototype, 1);
-  Handle<Object> result;
-  ASSIGN_RETURN_FAILURE_ON_EXCEPTION(
-      isolate, result, JSObject::SetPrototype(obj, prototype, true));
-  return *result;
+  MAYBE_RETURN(JSReceiver::SetPrototype(obj, prototype, true, THROW_ON_ERROR),
+               isolate->heap()->exception());
+  return *obj;
 }
 
 
 // Enumerator used as indices into the array returned from GetOwnProperty
 enum PropertyDescriptorIndices {
   IS_ACCESSOR_INDEX,
   VALUE_INDEX,
   GETTER_INDEX,
   SETTER_INDEX,
   WRITABLE_INDEX,
@@ skipping 825 matching lines @@
     result = isolate->factory()->NewJSObjectWithMemento(function, site);
   }
 
   // Set up the prototoype using original function.
   // TODO(dslomov): instead of setting the __proto__,
   // use and cache the correct map.
   if (*original_function != *function) {
     if (original_function->has_instance_prototype()) {
       Handle<Object> prototype =
           handle(original_function->instance_prototype(), isolate);
-      RETURN_FAILURE_ON_EXCEPTION(
-          isolate, JSObject::SetPrototype(result, prototype, false));
+      MAYBE_RETURN(
+          JSObject::SetPrototype(result, prototype, false, THROW_ON_ERROR),
+          isolate->heap()->exception());
     }
   }
 
   isolate->counters()->constructed_objects()->Increment();
   isolate->counters()->constructed_objects_runtime()->Increment();
 
   return *result;
 }
 
 
@@ skipping 531 matching lines @@
 
 RUNTIME_FUNCTION(Runtime_ObjectDefineProperties) {
   HandleScope scope(isolate);
   DCHECK(args.length() == 2);
   CONVERT_ARG_HANDLE_CHECKED(Object, o, 0);
   CONVERT_ARG_HANDLE_CHECKED(Object, properties, 1);
   return JSReceiver::DefineProperties(isolate, o, properties);
 }
 }  // namespace internal
 }  // namespace v8