ES6 symbols: Allow symbols as property names

src/objects-printer.cc

 // 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 241 matching lines @@
 void ExternalDoubleArray::ExternalDoubleArrayPrint(FILE* out) {
   PrintF(out, "external double array");
 }
 
 
 void JSObject::PrintProperties(FILE* out) {
   if (HasFastProperties()) {
     DescriptorArray* descs = map()->instance_descriptors();
     for (int i = 0; i < map()->NumberOfOwnDescriptors(); i++) {
       PrintF(out, "   ");
-      descs->GetKey(i)->StringPrint(out);
+      descs->GetKey(i)->NamePrint(out);
       PrintF(out, ": ");
       switch (descs->GetType(i)) {
         case FIELD: {
           int index = descs->GetFieldIndex(i);
           FastPropertyAt(index)->ShortPrint(out);
           PrintF(out, " (field at offset %d)\n", index);
           break;
         }
         case CONSTANT_FUNCTION:
           descs->GetConstantFunction(i)->ShortPrint(out);
@@ skipping 137 matching lines @@
     }
   }
 }
 
 
 void JSObject::PrintTransitions(FILE* out) {
   if (!map()->HasTransitionArray()) return;
   TransitionArray* transitions = map()->transitions();
   for (int i = 0; i < transitions->number_of_transitions(); i++) {
     PrintF(out, "   ");
-    transitions->GetKey(i)->StringPrint(out);
+    transitions->GetKey(i)->NamePrint(out);
     PrintF(out, ": ");
     switch (transitions->GetTargetDetails(i).type()) {
       case FIELD: {
         PrintF(out, " (transition to field)\n");
         break;
       }
       case CONSTANT_FUNCTION:
         PrintF(out, " (transition to constant function)\n");
         break;
       case CALLBACKS:
@@ skipping 272 matching lines @@
     PrintF(out, "%c", Get(i));
   }
   if (len != length()) {
     PrintF(out, "%s", truncated_epilogue);
   }
 
   if (!StringShape(this).IsInternalized()) PrintF(out, "\"");
 }
 
 
+void Name::NamePrint(FILE* out) {
+  if (IsString())
+    String::cast(this)->StringPrint(out);
+  else
+    ShortPrint();
+}
+
+
 // This method is only meant to be called from gdb for debugging purposes.
 // Since the string can also be in two-byte encoding, non-ASCII characters
 // will be ignored in the output.
 char* String::ToAsciiArray() {
   // Static so that subsequent calls frees previously allocated space.
   // This also means that previous results will be overwritten.
   static char* buffer = NULL;
   if (buffer != NULL) free(buffer);
   buffer = new char[length()+1];
   WriteToFlat(this, reinterpret_cast<uint8_t*>(buffer), 0, length());
@@ skipping 377 matching lines @@
     desc.Print(out);
   }
   PrintF(out, "\n");
 }
 
 
 void TransitionArray::PrintTransitions(FILE* out) {
   PrintF(out, "Transition array  %d\n", number_of_transitions());
   for (int i = 0; i < number_of_transitions(); i++) {
     PrintF(out, " %d: ", i);
-    GetKey(i)->StringPrint(out);
+    GetKey(i)->NamePrint(out);
     PrintF(out, ": ");
     switch (GetTargetDetails(i).type()) {
       case FIELD: {
         PrintF(out, " (transition to field)\n");
         break;
       }
       case CONSTANT_FUNCTION:
         PrintF(out, " (transition to constant function)\n");
         break;
       case CALLBACKS:
@@ skipping 10 matching lines @@
     }
   }
   PrintF(out, "\n");
 }
 
 
 #endif  // OBJECT_PRINT
 
 
 } }  // namespace v8::internal