X-Git-Url: http://matita.cs.unibo.it/gitweb/?p=helm.git;a=blobdiff_plain;f=helm%2Focaml%2Ftactics%2FnegationTactics.ml;fp=helm%2Focaml%2Ftactics%2FnegationTactics.ml;h=0000000000000000000000000000000000000000;hp=65fe892fa61a09aa161226ddc135708ff0a52d21;hb=1696761e4b8576e8ed81caa905fd108717019226;hpb=5325734bc2e4927ed7ec146e35a6f0f2b49f50c1

diff --git a/helm/ocaml/tactics/negationTactics.ml b/helm/ocaml/tactics/negationTactics.ml
deleted file mode 100644
index 65fe892fa..000000000
--- a/helm/ocaml/tactics/negationTactics.ml
+++ /dev/null
@@ -1,74 +0,0 @@
-(* 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 =
-  let (proof, goal) = status in
-  let module C = Cic in
-  let module U = UriManager in
-  let module P = PrimitiveTactics in
-   let _,metasenv,_,_ = proof in
-    let _,context,ty = CicUtil.lookup_meta 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 (HelmLibraryObjects.Logic.absurd_URI , [] )) ; 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 (HelmLibraryObjects.Logic.false_URI, 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 (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))
-        (proof,goal)
-;;
-*)
-
-