pass message to compile, not frame

lib/ast/call_site_expression.rb

@@ -4,10 +4,10 @@ module Ast
   class CallSiteExpression < Expression
 #    attr_reader  :name, :args , :receiver
     @@counter = 0
-    def compile method , frame
-      me = receiver.compile( method, frame )
-      with = args.collect{|a| a.compile( method,frame)}
-      frame.compile_send( method , name , me , with  )
+    def compile method , message
+      me = receiver.compile( method, message )
+      with = args.collect{|a| a.compile( method,message)}
+      message.compile_send( method , name , me , with  )
     end
 
     def scratch