(* Copyright (C) 2004, 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

  (** create a Cic.CurrentProof from a given proof *)
let cicCurrentProof (uri, metasenv, bo, ty) =
  let uri = MatitaTypes.unopt_uri uri in
    (* TODO CSC: Wrong: [] is just plainly wrong *)
  Cic.CurrentProof (UriManager.name_of_uri uri, metasenv, bo, ty, [], [])

  (** create a Cic.Constant from a given proof *)
let cicConstant (uri, metasenv, bo, ty) =
  let uri = MatitaTypes.unopt_uri uri in
    (* TODO CSC: Wrong: [] is just plainly wrong *)
  Cic.Constant (UriManager.name_of_uri uri, Some bo, ty, [], [])

let canonical_context metano metasenv =
  try
    let (_, context, _) = List.find (fun (m, _, _) -> m = metano) metasenv in
    context
  with Not_found ->
    failwith (sprintf "Can't find canonical context for %d" metano)

  (** term AST -> Cic.term. Uses disambiguator and change imperatively the
  * metasenv as needed *)
let disambiguate ~(disambiguator:MatitaTypes.disambiguator) ~currentProof ast =
  if currentProof#onGoing () then begin
    let proof = currentProof#proof in
    let metasenv = proof#metasenv in
    let goal = proof#goal in
    let context = canonical_context goal metasenv in
    let (_, metasenv, term,ugraph) as retval =
      disambiguator#disambiguateTermAst ~context ~metasenv ast
    in
    proof#set_metasenv metasenv;
    retval
  end else
    disambiguator#disambiguateTermAst ast

let get_context_and_metasenv ~(currentProof:#MatitaTypes.currentProof) =
  if currentProof#onGoing () then
    let proof = currentProof#proof in
    let metasenv = proof#metasenv in
    let goal = proof#goal in
    (canonical_context goal metasenv, metasenv)
  else
    ([], [])