Resolve typedefs.

lib/compiler/implementation/warnings.dart

Index: lib/compiler/implementation/warnings.dart
diff --git a/lib/compiler/implementation/warnings.dart b/lib/compiler/implementation/warnings.dart
index ce34b0ca6da8f43b303ccf10e4fc944b3dd2c155..976c76b8fbd5799582d0a9e894241b8e5c1000b5 100644
--- a/lib/compiler/implementation/warnings.dart
+++ b/lib/compiler/implementation/warnings.dart
@@ -154,6 +154,8 @@ class MessageKind {
 
   static final CANNOT_INSTANTIATE_TYPEDEF = const MessageKind(
       "cannot instantiate typedef '#{1}'");
+  static final CYCLIC_TYPEDEF = const MessageKind(
+      "a typedef may not refer to the type it is defining");

[ahe, 2012/07/30 10:30:05]

I think this message should include the name of the typedef that is referring to
itself. Also, how about "itself" instead of "the type is it defining"?

[Johnni Winther, 2012/08/01 10:12:29]

Done.

 
   static final NO_DEFAULT_CLASS = const MessageKind(
       "no default class on enclosing interface '#{1}'");