ES6 symbols: Implement Symbol intrinsic and basic functionality

src/runtime.cc

Index: src/runtime.cc
diff --git a/src/runtime.cc b/src/runtime.cc
index 959dec418ea393f3ed7cf66e2bbb35eed3cf2500..a3690c45c3f163238284a41706b8adb73eee5bce 100644
--- a/src/runtime.cc
+++ b/src/runtime.cc
@@ -679,6 +679,12 @@ RUNTIME_FUNCTION(MaybeObject*, Runtime_CreateArrayLiteralShallow) {
 }
 
 
+RUNTIME_FUNCTION(MaybeObject*, Runtime_CreateSymbol) {

[Michael Starzinger, 2013/02/26 20:41:49]

Let's play it safe and add "NoHandleAllocation ha;" to the top of this function.
IMHO, all runtime functions should have either that or their own HandleScope.

[rossberg, 2013/02/27 13:12:23]

Done.

+  ASSERT(args.length() == 0);
+  return isolate->heap()->AllocateSymbol();
+}
+
+
 RUNTIME_FUNCTION(MaybeObject*, Runtime_CreateJSProxy) {
   ASSERT(args.length() == 2);
   CONVERT_ARG_CHECKED(JSReceiver, handler, 0);