(* Copyright (C) 2004-2005, HELM Team.
 * 
 * This file is part of HELM, an Hypertextual, Electronic
 * Library of Mathematics, developed at the Computer Science
 * Department, University of Bologna, Italy.
 * 
 * HELM is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 * 
 * HELM is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with HELM; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
 * MA  02111-1307, USA.
 * 
 * For details, see the HELM World-Wide-Web page,
 * http://helm.cs.unibo.it/
 *)

open Printf

let to_string = 
  function
  | MatitaTypes.Option_error ("baseuri", "not found" ) -> 
      "Baseuri not set for this script. "
      ^ "Use 'set \"baseuri\" \"<uri>\".' to set it."
  | MatitaTypes.Command_error msg -> "Error: " ^ msg
  | CicNotationParser.Parse_error (floc,err) ->
      let (x, y) = CicNotationPt.loc_of_floc floc in
      sprintf "Parse error at %d-%d: %s" x y err
  | UriManager.IllFormedUri uri -> sprintf "invalid uri: %s" uri
  | CicEnvironment.Object_not_found uri ->
      sprintf "object not found: %s" (UriManager.string_of_uri uri)
  | Unix.Unix_error (code, api, param) ->
      let err = Unix.error_message code in
      "Unix Error (" ^ api ^ "): " ^ err
  | exn -> "Uncaught exception: " ^ Printexc.to_string exn