exception Warnings;;

class warner =
  object 
    method warn w =
      print_endline ("WARNING: " ^ w) ;
      (raise Warnings : unit)
  end
;;

exception EmptyUri;;

let theory_of_xml filename =
 let module Y = Pxp_yacc in
  try 
    let d =
     let config = {Y.default_config with Y.warner = new warner} in
      Y.parse_document_entity config
(*PXP       (Y.ExtID (Pxp_types.System filename,
         new Pxp_reader.resolve_as_file ~url_of_id ()))
*)     (PxpUriResolver.from_file filename)
       Y.default_spec
    in
     TheoryParser2.get_theory d#root
  with
   e ->
     print_endline (Pxp_types.string_of_exn e) ;
     raise e
;;