ES6 symbols: Implement Symbol intrinsic and basic functionality

src/bootstrapper.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 1400 matching lines @@
   INSTALL_NATIVE(JSFunction, "Instantiate", instantiate_fun);
   INSTALL_NATIVE(JSFunction, "ConfigureTemplateInstance",
                  configure_instance_fun);
   INSTALL_NATIVE(JSFunction, "GetStackTraceLine", get_stack_trace_line_fun);
   INSTALL_NATIVE(JSObject, "functionCache", function_cache);
   INSTALL_NATIVE(JSFunction, "ToCompletePropertyDescriptor",
                  to_complete_property_descriptor);
 }
 
 void Genesis::InstallExperimentalNativeFunctions() {
+  if (FLAG_harmony_symbols) {
+    INSTALL_NATIVE(JSObject, "SymbolDelegate", symbol_delegate);
+  }
   if (FLAG_harmony_proxies) {
     INSTALL_NATIVE(JSFunction, "DerivedHasTrap", derived_has_trap);
     INSTALL_NATIVE(JSFunction, "DerivedGetTrap", derived_get_trap);
     INSTALL_NATIVE(JSFunction, "DerivedSetTrap", derived_set_trap);
     INSTALL_NATIVE(JSFunction, "ProxyEnumerate", proxy_enumerate);
   }
   if (FLAG_harmony_observation) {
     INSTALL_NATIVE(JSFunction, "NotifyChange", observers_notify_change);
     INSTALL_NATIVE(JSFunction, "DeliverChangeRecords",
                    observers_deliver_changes);
@@ skipping 407 matching lines @@
 #endif
 
   return true;
 }
 
 
 bool Genesis::InstallExperimentalNatives() {
   for (int i = ExperimentalNatives::GetDebuggerCount();
        i < ExperimentalNatives::GetBuiltinsCount();
        i++) {
+    if (FLAG_harmony_symbols &&
+        strcmp(ExperimentalNatives::GetScriptName(i).start(),
+               "native symbol.js") == 0) {
+      if (!CompileExperimentalBuiltin(isolate(), i)) return false;
+    }
     if (FLAG_harmony_proxies &&
         strcmp(ExperimentalNatives::GetScriptName(i).start(),
                "native proxy.js") == 0) {
       if (!CompileExperimentalBuiltin(isolate(), i)) return false;
     }
     if (FLAG_harmony_collections &&
         strcmp(ExperimentalNatives::GetScriptName(i).start(),
                "native collection.js") == 0) {
       if (!CompileExperimentalBuiltin(isolate(), i)) return false;
     }
@@ skipping 575 matching lines @@
   return from + sizeof(NestingCounterType);
 }
 
 
 // Called when the top-level V8 mutex is destroyed.
 void Bootstrapper::FreeThreadResources() {
   ASSERT(!IsActive());
 }
 
 } }  // namespace v8::internal