X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Focaml%2Ftactics%2FdiscriminationTactics.ml;h=c9feaaee68da093fd97a49df693886a463fc5931;hb=97c2d258a5c524eb5c4b85208899d80751a2c82f;hp=b807728273f82e730102acfb292718dd41a24f6c;hpb=cfda0acfce3f5e0b843bfe2b7ba7c371e5690db0;p=helm.git

diff --git a/helm/ocaml/tactics/discriminationTactics.ml b/helm/ocaml/tactics/discriminationTactics.ml
index b80772827..c9feaaee6 100644
--- a/helm/ocaml/tactics/discriminationTactics.ml
+++ b/helm/ocaml/tactics/discriminationTactics.ml
@@ -59,7 +59,7 @@ let rec injection_tac ~term =
                              T.then_ 
                               ~start:(injection1_tac ~i ~term)
                               ~continuation:(traverse_list (i+1) tl1 tl2)
-                          | _ -> raise (ProofEngineTypes.Fail "Discriminate: i 2 termini hanno in testa lo stesso costruttore, ma applicato a un numero diverso di termini. possibile???") ; T.id_tac
+                          | _ -> raise (ProofEngineTypes.Fail (lazy "Discriminate: i 2 termini hanno in testa lo stesso costruttore, ma applicato a un numero diverso di termini. possibile???")) ; T.id_tac
                        in traverse_list 1 applist1 applist2
                     | ((C.MutConstruct (uri1,typeno1,consno1,exp_named_subst1)),
                        (C.MutConstruct (uri2,typeno2,consno2,exp_named_subst2)))
@@ -73,9 +73,9 @@ let rec injection_tac ~term =
                        (* raise (ProofEngineTypes.Fail "Injection: not a projectable equality but a discriminable one") ; *) T.id_tac
                     | _ -> (* raise (ProofEngineTypes.Fail "Injection: not a projectable equality") ; *) T.id_tac
                    )
-            | _ -> raise (ProofEngineTypes.Fail "Injection: not a projectable equality")
+            | _ -> raise (ProofEngineTypes.Fail (lazy "Injection: not a projectable equality"))
            )
-        | _ -> raise (ProofEngineTypes.Fail "Injection: not an equation")
+        | _ -> raise (ProofEngineTypes.Fail (lazy "Injection: not an equation"))
       ) status
  in 
   ProofEngineTypes.mk_tactic (injection_tac ~term)
@@ -138,7 +138,7 @@ and injection1_tac ~term ~i =
                                 in aux reduced_cty 1
                              )
                              constructor_list
-                       | _ -> raise (ProofEngineTypes.Fail "Discriminate: object is not an Inductive Definition: it's imposible")
+                       | _ -> raise (ProofEngineTypes.Fail (lazy "Discriminate: object is not an Inductive Definition: it's imposible"))
                 in
                 ProofEngineTypes.apply_tactic   
                  (T.thens 
@@ -158,7 +158,7 @@ and injection1_tac ~term ~i =
                             match gty with 
                                (C.Appl (C.MutInd (_,_,_)::arglist)) -> 
                                 List.nth arglist 1
-                             | _ -> raise (ProofEngineTypes.Fail "Injection: goal after cut is not correct")
+                             | _ -> raise (ProofEngineTypes.Fail (lazy "Injection: goal after cut is not correct"))
                            in
                             ProofEngineTypes.apply_tactic 
                             (ReductionTactics.change_tac
@@ -187,9 +187,9 @@ and injection1_tac ~term ~i =
                        )
                    ])     
                   status
-            | _ -> raise (ProofEngineTypes.Fail "Discriminate: not a discriminable equality")
+            | _ -> raise (ProofEngineTypes.Fail (lazy "Discriminate: not a discriminable equality"))
            )
-        | _ -> raise (ProofEngineTypes.Fail "Discriminate: not an equality")
+        | _ -> raise (ProofEngineTypes.Fail (lazy "Discriminate: not an equality"))
  in
   ProofEngineTypes.mk_tactic (injection1_tac ~term ~i)
 ;;
@@ -204,7 +204,7 @@ let discriminate'_tac ~term =
  let module U = UriManager in
  let module P = PrimitiveTactics in
  let module T = Tacticals in
- let fail msg = raise (ProofEngineTypes.Fail ("Discriminate: " ^ msg)) in
+ let fail msg = raise (ProofEngineTypes.Fail (lazy ("Discriminate: " ^ msg))) in
  let find_discriminating_consno t1 t2 =
    let rec aux t1 t2 =
      match t1, t2 with