--- a/src/core/enum.h	Wed Mar 12 10:18:14 2008 -0700
+++ b/src/core/enum.h	Wed Mar 12 11:35:00 2008 -0700
@@ -59,6 +59,9 @@
   void Add (int v, std::string name);
 
   virtual bool Check (Attribute value) const;
+  virtual std::string GetType (void) const;
+  virtual bool HasTypeConstraints (void) const;
+  virtual std::string GetTypeConstraints (void) const;
   virtual Attribute Create (void) const;
 
 private: