[ESnext] Implement Object Rest

src/builtins/builtins-object.cc

 // Copyright 2016 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/builtins/builtins-utils.h"
 #include "src/builtins/builtins.h"
 #include "src/code-factory.h"
 #include "src/code-stub-assembler.h"
 #include "src/property-descriptor.h"
 
@@ skipping 62 matching lines @@
   ASSIGN_RETURN_FAILURE_ON_EXCEPTION(isolate, target,
                                      Object::ToObject(isolate, target));
   Handle<JSReceiver> to = Handle<JSReceiver>::cast(target);
   // 2. If only one argument was passed, return to.
   if (args.length() == 2) return *to;
   // 3. Let sources be the List of argument values starting with the
   //    second argument.
   // 4. For each element nextSource of sources, in ascending index order,
   for (int i = 2; i < args.length(); ++i) {
     Handle<Object> next_source = args.at(i);
-    MAYBE_RETURN(
-        JSReceiver::SetOrCopyDataProperties(isolate, to, next_source, true),
-        isolate->heap()->exception());
+    MAYBE_RETURN(JSReceiver::SetOrCopyDataProperties(isolate, to, next_source),
+                 isolate->heap()->exception());
   }
   // 5. Return to.
   return *to;
 }
 
 // ES6 section 19.1.3.4 Object.prototype.propertyIsEnumerable ( V )
 BUILTIN(ObjectPrototypePropertyIsEnumerable) {
   HandleScope scope(isolate);
   Handle<JSReceiver> object;
   Handle<Name> name;
@@ skipping 837 matching lines @@
   typedef TypeofDescriptor Descriptor;
 
   Node* object = Parameter(Descriptor::kObject);
   Node* context = Parameter(Descriptor::kContext);
 
   Return(GetSuperConstructor(object, context));
 }
 
 }  // namespace internal
 }  // namespace v8