(* Title: Pure/ML-Systems/compiler_polyml-5.0.ML
Runtime compilation for Poly/ML 5.0 and 5.1.
*)
fun use_text ({tune_source, print, error, ...}: use_context) (line, name) verbose txt =
let
val in_buffer = ref (explode (tune_source txt));
val out_buffer = ref ([]: string list);
fun output () = implode (rev (case ! out_buffer of "\n" :: cs => cs | cs => cs));
val current_line = ref line;
fun get () =
(case ! in_buffer of
[] => ""
| c :: cs => (in_buffer := cs; if c = "\n" then current_line := ! current_line + 1 else (); c));
fun put s = out_buffer := s :: ! out_buffer;
fun exec () =
(case ! in_buffer of
[] => ()
| _ => (PolyML.compilerEx (get, put, fn () => ! current_line, name) (); exec ()));
in
exec () handle exn => (error (output ()); raise exn);
if verbose then print (output ()) else ()
end;
fun use_file context verbose name =
let
val instream = TextIO.openIn name;
val txt = Exn.release (Exn.capture TextIO.inputAll instream before TextIO.closeIn instream);
in use_text context (1, name) verbose txt end;