src/Pure/ML-Systems/polyml-5.1.ML
author wenzelm
Mon, 23 Jul 2007 20:47:55 +0200
changeset 23943 1b5f77bc146a
child 23947 5e396bcf749e
permissions -rw-r--r--
added compatibility wrapper for polyml-5.1;
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(*  Title:      Pure/ML-Systems/polyml-5.0.ML
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    ID:         $Id$
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Compatibility wrapper for Poly/ML 5.1.
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*)
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use "ML-Systems/polyml.ML";
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val pointer_eq = PolyML.pointerEq;
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(* improved versions of use_text/file *)
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fun use_text name (print, err) verbose txt =
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  let
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    val in_buffer = ref (explode txt);
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    val out_buffer = ref ([]: string list);
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    fun output () = implode (rev (case ! out_buffer of "\n" :: cs => cs | cs => cs));
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    val line_no = ref 1;
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    fun line () = ! line_no;
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    fun get () =
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      (case ! in_buffer of
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        [] => ""
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      | c :: cs => (in_buffer := cs; if c = "\n" then line_no := ! line_no + 1 else (); c));
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    fun put s = out_buffer := s :: ! out_buffer;
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    fun exec () =
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      (case ! in_buffer of
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        [] => ()
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      | _ => (PolyML.compilerEx (get, put, line, name) (); exec ()));
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  in
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    exec () handle exn => (err (output ()); raise exn);
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    if verbose then print (output ()) else ()
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  end;
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fun use_file output verbose name =
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  let
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    val instream = TextIO.openIn name;
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    val txt = TextIO.inputAll instream before TextIO.closeIn instream;
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  in use_text name output verbose txt end;