src/Pure/ML-Systems/polyml-experimental.ML

+(*  Title:      Pure/ML-Systems/polyml.ML
+
+Compatibility wrapper for experimental versions of Poly/ML after 5.2.1.
+*)
+
+open Thread;
+use "ML-Systems/polyml_common.ML";
+use "ML-Systems/multithreading_polyml.ML";
+
+val pointer_eq = PolyML.pointerEq;
+
+fun share_common_data () = PolyML.shareCommonData PolyML.rootFunction;
+
+
+(* toplevel pretty printers *)
+
+(*dummy version*)
+fun make_pp path pprint = ();
+fun install_pp _ = ();
+
+
+(* runtime compilation *)
+
+structure ML_NameSpace =
+struct
+  open PolyML.NameSpace;
+  val global = PolyML.globalNameSpace;
+end;
+
+local
+
+fun drop_newline s =
+  if String.isSuffix "\n" s then String.substring (s, 0, size s - 1)
+  else s;
+
+in
+
+fun use_text (tune: string -> string) str_of_pos
+    name_space (start_line, name) (print, err) verbose txt =
+  let
+    val current_line = ref start_line;
+    val in_buffer = ref (String.explode (tune txt));
+    val out_buffer = ref ([]: string list);
+    fun output () = drop_newline (implode (rev (! out_buffer)));
+
+    fun get () =
+      (case ! in_buffer of
+        [] => NONE
+      | c :: cs =>
+          (in_buffer := cs; if c = #"\n" then current_line := ! current_line + 1 else (); SOME c));
+    fun put s = out_buffer := s :: ! out_buffer;
+    fun put_message (prt, is_err, {file, line, offset}) =
+     (put (if is_err then "Error: " else "Warning: ");
+      PolyML.prettyPrint (put, 76) prt;
+      put (str_of_pos line name ^ "\n"));
+
+    val parameters =
+     [PolyML.Compiler.CPOutStream put,
+      PolyML.Compiler.CPLineNo (fn () => ! current_line),
+      PolyML.Compiler.CPErrorMessageProc put_message,
+      PolyML.Compiler.CPNameSpace name_space];
+    val _ =
+      (while not (List.null (! in_buffer)) do
+        PolyML.compiler (get, parameters) ())
+      handle exn =>
+       (put ("Exception- " ^ General.exnMessage exn ^ " raised");
+        err (output ()); raise exn);
+  in if verbose then print (output ()) else () end;
+
+fun use_file tune str_of_pos name_space output verbose name =
+  let
+    val instream = TextIO.openIn name;
+    val txt = Exn.release (Exn.capture TextIO.inputAll instream before TextIO.closeIn instream);
+  in use_text tune str_of_pos name_space (1, name) output verbose txt end;
+
+end;