+++ /dev/null
-(* Copyright (C) 2002, 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://cs.unibo.it/helm/.
- *)
-
-(* $Id$ *)
-
-
-(* TODO se ce n'e' piu' di una, prende la prima che trova... sarebbe meglio
-chiedere: find dovrebbe restituire una lista di hyp (?) da passare all'utonto con una
-funzione di callback che restituisce la (sola) hyp da applicare *)
-
-let assumption_tac =
- let module PET = ProofEngineTypes in
- let assumption_tac status =
- let (proof, goal) = status in
- let module C = Cic in
- let module R = CicReduction in
- let module S = CicSubstitution in
- let module PT = PrimitiveTactics in
- let _,metasenv,_,_,_, _ = proof in
- let _,context,ty = CicUtil.lookup_meta goal metasenv in
- let rec find n = function
- hd::tl ->
- (match hd with
- (Some (_, C.Decl t)) when
- fst (R.are_convertible context (S.lift n t) ty
- CicUniv.oblivion_ugraph) -> n
- | (Some (_, C.Def (_,ty'))) when
- fst (R.are_convertible context (S.lift n ty') ty
- CicUniv.oblivion_ugraph) -> n
- | _ -> find (n+1) tl
- )
- | [] -> raise (PET.Fail (lazy "Assumption: No such assumption"))
- in PET.apply_tactic (PT.apply_tac ~term:(C.Rel (find 1 context))) status
- in
- PET.mk_tactic assumption_tac
-;;