Change memberName and namedArguments in Invocation to use Symbol.

dart/sdk/lib/core/invocation.dart

Index: dart/sdk/lib/core/invocation.dart
diff --git a/dart/sdk/lib/core/invocation.dart b/dart/sdk/lib/core/invocation.dart
index 2e4dd90e4a571a0a49951249f71229cc0e8b0745..092a9078f86ccf00734b34a294b9edcebcdb87b2 100644
--- a/dart/sdk/lib/core/invocation.dart
+++ b/dart/sdk/lib/core/invocation.dart
@@ -13,13 +13,13 @@ part of dart.core;
  */
 abstract class Invocation {
   /** The name of the invoked member. */

[Ivan Posva, 2013/04/16 18:19:49]

To be able to get the "name" of the invoked member we will have a credible story
on allowing toString of Symbols.

[ahe, 2013/04/16 18:32:00]

Did you notice MirrorSystem.getName? Does that provide a credible story? Is more
needed?

-  String get memberName;
+  Symbol get memberName;
 
   /** An unmodifiable view of the positional arguments of the call. */
   List get positionalArguments;
 
   /** An unmodifiable view of the named arguments of the call. */
-  Map<String, dynamic> get namedArguments;
+  Map<Symbol, dynamic> get namedArguments;
 
   /** Whether the invocation was a method call. */
   bool get isMethod;