ES6 symbols: Introduce Symbol class, along with abstract Name class

src/factory.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 265 matching lines @@
 
 Handle<String> Factory::NewExternalStringFromTwoByte(
     const ExternalTwoByteString::Resource* resource) {
   CALL_HEAP_FUNCTION(
       isolate(),
       isolate()->heap()->AllocateExternalStringFromTwoByte(resource),
       String);
 }
 
 
+Handle<Symbol> Factory::NewSymbol() {
+  CALL_HEAP_FUNCTION(
+      isolate(),
+      isolate()->heap()->AllocateSymbol(),
+      Symbol);
+}
+
+
 Handle<Context> Factory::NewNativeContext() {
   CALL_HEAP_FUNCTION(
       isolate(),
       isolate()->heap()->AllocateNativeContext(),
       Context);
 }
 
 
 Handle<Context> Factory::NewGlobalContext(Handle<JSFunction> function,
                                           Handle<ScopeInfo> scope_info) {
@@ skipping 1149 matching lines @@
 
 
 Handle<Object> Factory::ToBoolean(bool value) {
   return Handle<Object>(value
                         ? isolate()->heap()->true_value()
                         : isolate()->heap()->false_value());
 }
 
 
 } }  // namespace v8::internal