(* 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

open MatitaTypes

exception Ambiguous_input

type choose_uris_callback = id:string -> string list -> string list
type choose_interp_callback = (string * string) list list -> int list

let mono_uris_callback ~id = raise Ambiguous_input
let mono_interp_callback _ = raise Ambiguous_input

let _choose_uris_callback = ref mono_uris_callback
let _choose_interp_callback = ref mono_interp_callback
let set_choose_uris_callback f = _choose_uris_callback := f
let set_choose_interp_callback f = _choose_interp_callback := f

module Callbacks =
  struct
    let interactive_user_uri_choice ~selection_mode ?ok
          ?(enable_button_for_non_vars = true) ~title ~msg ~id uris =
              !_choose_uris_callback ~id uris

    let interactive_interpretation_choice interp =
      !_choose_interp_callback interp

    let input_or_locate_uri ~(title:string) ?id =
      (* Zack: I try to avoid using this callback. I therefore assume that
      * the presence of an identifier that can't be resolved via "locate"
      * query is a syntax error *)
      let msg = match id with Some id -> id | _ -> "_" in
      raise (Unbound_identifier msg)
  end
  
module Disambiguator = Disambiguate.Make (Callbacks)

(* implement module's API *)

let disambiguate_term = Disambiguator.disambiguate_term