(* Title: Pure/ML-Systems/polyml-5.0.ML
ID: $Id$
Compatibility wrapper for Poly/ML 5.0.
*)
use "ML-Systems/polyml.ML";
val pointer_eq = PolyML.pointerEq;
(* improved versions of use_text/file *)
fun use_text (tune: string -> string) name (print, err) verbose txt =
let
val in_buffer = ref (explode (tune txt));
val out_buffer = ref ([]: string list);
fun output () = implode (rev (case ! out_buffer of "\n" :: cs => cs | cs => cs));
val line_no = ref 1;
fun line () = ! line_no;
fun get () =
(case ! in_buffer of
[] => ""
| c :: cs => (in_buffer := cs; if c = "\n" then line_no := ! line_no + 1 else (); c));
fun put s = out_buffer := s :: ! out_buffer;
fun exec () =
(case ! in_buffer of
[] => ()
| _ => (PolyML.compilerEx (get, put, line, name) (); exec ()));
in
exec () handle exn => (err (output ()); raise exn);
if verbose then print (output ()) else ()
end;
fun use_file tune output verbose name =
let
val instream = TextIO.openIn name;
val txt = TextIO.inputAll instream before TextIO.closeIn instream;
in use_text tune name output verbose txt end;