lib/gisele/errors.rb in gisele-0.5.1 vs lib/gisele/errors.rb in gisele-0.6.0

@@ -16,6 +16,10 @@
   # Raised when an unexpected node is encountered in an AST-driven
   # transformation.
   class UnexpectedNodeError < InternalError
   end
 
+  # Raised when a variable is not known.
+  class NoSuchVariableError < Error
+  end
+
 end # module Gisele
\ No newline at end of file