Introduce LookupIterator::PropertyOrElement which converts name to index if possible.

src/runtime/runtime-classes.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 <stdlib.h>
 #include <limits>
 
 #include "src/v8.h"
 
 #include "src/arguments.h"
@@ skipping 289 matching lines @@
   CONVERT_ARG_HANDLE_CHECKED(Object, key, 2);
 
   uint32_t index = 0;
   if (key->ToArrayIndex(&index)) {
     return LoadElementFromSuper(isolate, receiver, home_object, index);
   }
 
   Handle<Name> name;
   ASSIGN_RETURN_FAILURE_ON_EXCEPTION(isolate, name,
                                      Runtime::ToName(isolate, key));
+  // TODO(verwaest): Unify using LookupIterator.
   if (name->AsArrayIndex(&index)) {
     return LoadElementFromSuper(isolate, receiver, home_object, index);
   }
   return LoadFromSuper(isolate, receiver, home_object, name);
 }
 
 
 static Object* StoreToSuper(Isolate* isolate, Handle<JSObject> home_object,
                             Handle<Object> receiver, Handle<Name> name,
                             Handle<Object> value, LanguageMode language_mode) {
@@ skipping 70 matching lines @@
                                  LanguageMode language_mode) {
   uint32_t index = 0;
 
   if (key->ToArrayIndex(&index)) {
     return StoreElementToSuper(isolate, home_object, receiver, index, value,
                                language_mode);
   }
   Handle<Name> name;
   ASSIGN_RETURN_FAILURE_ON_EXCEPTION(isolate, name,
                                      Runtime::ToName(isolate, key));
+  // TODO(verwaest): Unify using LookupIterator.
   if (name->AsArrayIndex(&index)) {
     return StoreElementToSuper(isolate, home_object, receiver, index, value,
                                language_mode);
   }
   return StoreToSuper(isolate, home_object, receiver, name, value,
                       language_mode);
 }
 
 
 RUNTIME_FUNCTION(Runtime_StoreKeyedToSuper_Strict) {
@@ skipping 38 matching lines @@
   return nullptr;
 }
 
 
 RUNTIME_FUNCTION(Runtime_CallSuperWithSpread) {
   UNIMPLEMENTED();
   return nullptr;
 }
 }  // namespace internal
 }  // namespace v8