fixing fragment tests, most done

lib/ast/basic_expressions.rb

@@ -12,14 +12,24 @@ module Ast
   class NameExpression < Expression
 #    attr_reader  :name
 
-    # compiling a variable resolves it. 
-    # if it wasn't defined, nli is returned 
+    # compiling a variable resolves it. if it wasn't defined, raise an exception 
     def compile context , into
+      raise "Undefined variable #{name}, defined locals #{context.locals.keys.join('-')}" unless context.locals.has_key?(name)
       context.locals[name]
     end
   end
 
   class ModuleName < NameExpression
+
+    def compile context , into
+      clazz = context.object_space.get_or_create_class name
+      raise "uups #{clazz}.#{name}" unless clazz
+      #class qualifier, means call from metaclass
+      clazz = clazz.meta_class
+      value = clazz
+      puts "CLAZZ #{value}"
+      function = clazz.get_or_create_function(name)
+    end    
   end
 
   class StringExpression < Expression