Implement aggregate assignment

Rakefile

@@ -49,12 +49,18 @@ task :convert do
           	x: ElnaLocation;
           	y: ElnaLocation;
           begin
+          	y.line := 1;
+          	y.column := 3;
           	x := y;
+          	printf("# %i %i %i %i\\n\\0", x.line, x.column, y.line, y.column)
           end;
 
+          begin
+          	f();
         FUN
+      else
+        current_stage << line
       end
-      current_stage << line
     end
   end
 end