+++ /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/.
- *)
-
-
-let absurd_tac ~term ~status:((proof,goal) as status) =
- let module C = Cic in
- let module U = UriManager in
- let module P = PrimitiveTactics in
- let _,metasenv,_,_ = proof in
- let _,context,ty = List.find (function (m,_,_) -> m=goal) metasenv in
- if ((CicTypeChecker.type_of_aux' metasenv context term) = (C.Sort C.Prop)) (* ma questo controllo serve?? *)
- then P.apply_tac
- ~term:(C.Appl [(C.Const ((U.uri_of_string "cic:/Coq/Init/Logic/absurd.con") , [] )) ; term ; ty]) ~status
- else raise (ProofEngineTypes.Fail "Absurd: Not a Proposition")
-;;
-
-
-let contradiction_tac ~status =
- let module C = Cic in
- let module U = UriManager in
- let module P = PrimitiveTactics in
- let module T = Tacticals in
- try
- T.then_
- ~start:(P.intros_tac ())
- ~continuation:(
- T.then_
- ~start:
- (EliminationTactics.elim_type_tac
- ~term:
- (C.MutInd ((U.uri_of_string "cic:/Coq/Init/Logic/False.ind"), 0, [])))
- ~continuation: VariousTactics.assumption_tac)
- ~status
- with
- (ProofEngineTypes.Fail "Assumption: No such assumption") -> raise (ProofEngineTypes.Fail "Contradiction: No such assumption")
- (* sarebbe piu' elegante se Assumtion sollevasse un'eccezione tutta sua che questa cattura, magari con l'aiuto di try_tactics *)
-;;
-
-(* Questa era in fourierR.ml
-(* !!!!! fix !!!!!!!!!! *)
-let contradiction_tac ~status:(proof,goal)=
- Tacticals.then_
- ~start:(PrimitiveTactics.intros_tac ~name:"bo?" ) (*inutile sia questo che quello prima della chiamata*)
- ~continuation:(Tacticals.then_
- ~start:(VariousTactics.elim_type_tac ~term:_False)
- ~continuation:(assumption_tac))
- ~status:(proof,goal)
-;;
-*)
-
-