ES6 symbols: Allow symbols as property names

src/transitions-inl.h

 // Copyright 2012 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 125 matching lines @@
 
 Object** TransitionArray::GetKeySlot(int transition_number) {
   ASSERT(!IsSimpleTransition());
   ASSERT(transition_number < number_of_transitions());
   return HeapObject::RawField(
       reinterpret_cast<HeapObject*>(this),
       OffsetOfElementAt(ToKeyIndex(transition_number)));
 }
 
 
-String* TransitionArray::GetKey(int transition_number) {
+Name* TransitionArray::GetKey(int transition_number) {
   if (IsSimpleTransition()) {
     Map* target = GetTarget(kSimpleTransitionIndex);
     int descriptor = target->LastAdded();
-    String* key = target->instance_descriptors()->GetKey(descriptor);
+    Name* key = target->instance_descriptors()->GetKey(descriptor);
     return key;
   }
   ASSERT(transition_number < number_of_transitions());
-  return String::cast(get(ToKeyIndex(transition_number)));
+  return Name::cast(get(ToKeyIndex(transition_number)));
 }
 
 
-void TransitionArray::SetKey(int transition_number, String* key) {
+void TransitionArray::SetKey(int transition_number, Name* key) {
   ASSERT(!IsSimpleTransition());
   ASSERT(transition_number < number_of_transitions());
   set(ToKeyIndex(transition_number), key);
 }
 
 
 Map* TransitionArray::GetTarget(int transition_number) {
   if (IsSimpleTransition()) {
     ASSERT(transition_number == kSimpleTransitionIndex);
     return Map::cast(get(kSimpleTransitionTarget));
@@ skipping 14 matching lines @@
 
 
 PropertyDetails TransitionArray::GetTargetDetails(int transition_number) {
   Map* map = GetTarget(transition_number);
   DescriptorArray* descriptors = map->instance_descriptors();
   int descriptor = map->LastAdded();
   return descriptors->GetDetails(descriptor);
 }
 
 
-int TransitionArray::Search(String* name) {
+int TransitionArray::Search(Name* name) {
   if (IsSimpleTransition()) {
-    String* key = GetKey(kSimpleTransitionIndex);
+    Name* key = GetKey(kSimpleTransitionIndex);
     if (key->Equals(name)) return kSimpleTransitionIndex;
     return kNotFound;
   }
   return internal::Search<ALL_ENTRIES>(this, name);
 }
 
 
 void TransitionArray::NoIncrementalWriteBarrierSet(int transition_number,
-                                                   String* key,
+                                                   Name* key,
                                                    Map* target) {
   FixedArray::NoIncrementalWriteBarrierSet(
       this, ToKeyIndex(transition_number), key);
   FixedArray::NoIncrementalWriteBarrierSet(
       this, ToTargetIndex(transition_number), target);
 }
 
 
 #undef FIELD_ADDR
 #undef WRITE_FIELD
 #undef CONDITIONAL_WRITE_BARRIER
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TRANSITIONS_INL_H_