src/Pure/ML-Systems/compiler_polyml-5.3.ML
author haftmann
Mon, 08 Feb 2010 17:12:22 +0100
changeset 35045 a77d200e6503
parent 33538 edf497b5b5d2
child 38470 484e483eb606
permissions -rw-r--r--
using code antiquotation
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(*  Title:      Pure/ML-Systems/compiler_polyml-5.3.ML
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Runtime compilation for Poly/ML 5.3.0.
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*)
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local
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fun drop_newline s =
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  if String.isSuffix "\n" s then String.substring (s, 0, size s - 1)
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  else s;
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in
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fun use_text ({tune_source, name_space, str_of_pos, print, error, ...}: use_context)
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    (start_line, name) verbose txt =
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  let
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    val line = Unsynchronized.ref start_line;
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    val in_buffer = Unsynchronized.ref (String.explode (tune_source txt));
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    val out_buffer = Unsynchronized.ref ([]: string list);
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    fun output () = drop_newline (implode (rev (! out_buffer)));
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    fun get () =
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      (case ! in_buffer of
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        [] => NONE
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      | c :: cs => (in_buffer := cs; if c = #"\n" then line := ! line + 1 else (); SOME c));
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    fun put s = out_buffer := s :: ! out_buffer;
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    fun put_message {message = msg1, hard, location = {startLine = line, ...}, context} =
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     (put (if hard then "Error: " else "Warning: ");
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      PolyML.prettyPrint (put, 76) msg1;
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      (case context of NONE => () | SOME msg2 => PolyML.prettyPrint (put, 76) msg2);
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      put ("At" ^ str_of_pos line name ^ "\n"));
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    val parameters =
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     [PolyML.Compiler.CPOutStream put,
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      PolyML.Compiler.CPNameSpace name_space,
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      PolyML.Compiler.CPErrorMessageProc put_message,
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      PolyML.Compiler.CPLineNo (fn () => ! line),
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      PolyML.Compiler.CPFileName name,
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      PolyML.Compiler.CPPrintInAlphabeticalOrder false];
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    val _ =
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      (while not (List.null (! in_buffer)) do
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        PolyML.compiler (get, parameters) ())
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      handle exn =>
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       (put ("Exception- " ^ General.exnMessage exn ^ " raised");
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        error (output ()); reraise exn);
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  in if verbose then print (output ()) else () end;
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fun use_file context verbose name =
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  let
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    val instream = TextIO.openIn name;
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    val txt = Exn.release (Exn.capture TextIO.inputAll instream before TextIO.closeIn instream);
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  in use_text context (1, name) verbose txt end;
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end;
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