X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Focaml%2Ftactics%2FproofEngineReduction.ml;h=8a6ef81a277658d5e7cda8055768a925b7b3e574;hb=a9af753c66a80cb4f50f32e63272f3830cba306c;hp=e53d69048dd0261210b71aee19bff913305467a5;hpb=218c0062f93dd3221b0266cfbc26fd9cf787ad18;p=helm.git

diff --git a/helm/ocaml/tactics/proofEngineReduction.ml b/helm/ocaml/tactics/proofEngineReduction.ml
index e53d69048..8a6ef81a2 100644
--- a/helm/ocaml/tactics/proofEngineReduction.ml
+++ b/helm/ocaml/tactics/proofEngineReduction.ml
@@ -394,10 +394,10 @@ let reduce context =
            C.Constant _ -> raise ReferenceToConstant
          | C.CurrentProof _ -> raise ReferenceToCurrentProof
          | C.InductiveDefinition _ -> raise ReferenceToInductiveDefinition
-         | C.Variable (_,None,_,_) ->
+         | C.Variable (_,None,_,_,_) ->
             let t' = C.Var (uri,exp_named_subst') in
              if l = [] then t' else C.Appl (t'::l)
-         | C.Variable (_,Some body,_,_) ->
+         | C.Variable (_,Some body,_,_,_) ->
             (reduceaux context l
               (CicSubstitution.subst_vars exp_named_subst' body))
        )
@@ -432,14 +432,14 @@ let reduce context =
        in
         (let o,_ = CicEnvironment.get_obj CicUniv.empty_ugraph uri in
 	  match o with
-            C.Constant (_,Some body,_,_) ->
+            C.Constant (_,Some body,_,_,_) ->
              (reduceaux context l
                (CicSubstitution.subst_vars exp_named_subst' body))
-          | C.Constant (_,None,_,_) ->
+          | C.Constant (_,None,_,_,_) ->
              let t' = C.Const (uri,exp_named_subst') in
               if l = [] then t' else C.Appl (t'::l)
           | C.Variable _ -> raise ReferenceToVariable
-          | C.CurrentProof (_,_,body,_,_) ->
+          | C.CurrentProof (_,_,body,_,_,_) ->
              (reduceaux context l
                (CicSubstitution.subst_vars exp_named_subst' body))
           | C.InductiveDefinition _ -> raise ReferenceToInductiveDefinition
@@ -494,7 +494,7 @@ let reduce context =
              let (arity, r) =
 	       let o,_ = CicEnvironment.get_obj CicUniv.empty_ugraph mutind in
 		 match o with
-                     C.InductiveDefinition (tl,_,r) ->
+                     C.InductiveDefinition (tl,_,r,_) ->
                        let (_,_,arity,_) = List.nth tl i in
 			 (arity,r)
 		   | _ -> raise WrongUriToInductiveDefinition
@@ -584,7 +584,7 @@ exception AlreadySimplified;;
 (* Takes a well-typed term and                                               *)
 (*  1) Performs beta-iota-zeta reduction until delta reduction is needed     *)
 (*  2) Attempts delta-reduction. If the residual is a Fix lambda-abstracted  *)
-(*     w.r.t. zero or more variables and if the Fix can be reduced, than it  *)
+(*     w.r.t. zero or more variables and if the Fix can be reductaed, than it  *)
 (*     is reduced, the delta-reduction is succesfull and the whole algorithm *)
 (*     is applied again to the new redex; Step 3) is applied to the result   *)
 (*     of the recursive simplification. Otherwise, if the Fix can not be     *)
@@ -596,6 +596,7 @@ exception AlreadySimplified;;
 (*     change in every iteration, i.e. to the actual arguments for the       *)
 (*     lambda-abstractions that precede the Fix.                             *)
 (*CSC: It does not perform simplification in a Case *)
+
 let simpl context =
  (* reduceaux is equal to the reduceaux locally defined inside *)
  (* reduce, but for the const case.                            *) 
@@ -605,12 +606,14 @@ let simpl context =
   let module S = CicSubstitution in
    function
       C.Rel n as t ->
-       (match List.nth context (n-1) with
-           Some (_,C.Decl _) -> if l = [] then t else C.Appl (t::l)
-         | Some (_,C.Def (bo,_)) ->
-            try_delta_expansion l t (S.lift n bo)
-	 | None -> raise RelToHiddenHypothesis
-       )
+       (try
+         match List.nth context (n-1) with
+            Some (_,C.Decl _) -> if l = [] then t else C.Appl (t::l)
+          | Some (_,C.Def (bo,_)) ->
+             try_delta_expansion context l t (S.lift n bo)
+	  | None -> raise RelToHiddenHypothesis
+        with
+         Failure _ -> assert false)
     | C.Var (uri,exp_named_subst) ->
        let exp_named_subst' =
         reduceaux_exp_named_subst context l exp_named_subst
@@ -620,10 +623,10 @@ let simpl context =
             C.Constant _ -> raise ReferenceToConstant
           | C.CurrentProof _ -> raise ReferenceToCurrentProof
           | C.InductiveDefinition _ -> raise ReferenceToInductiveDefinition
-          | C.Variable (_,None,_,_) ->
+          | C.Variable (_,None,_,_,_) ->
             let t' = C.Var (uri,exp_named_subst') in
              if l = [] then t' else C.Appl (t'::l)
-          | C.Variable (_,Some body,_,_) ->
+          | C.Variable (_,Some body,_,_,_) ->
              reduceaux context l
               (CicSubstitution.subst_vars exp_named_subst' body)
         )
@@ -658,15 +661,15 @@ let simpl context =
        in
         (let o,_ = CicEnvironment.get_obj CicUniv.empty_ugraph uri in
 	  match o with
-           C.Constant (_,Some body,_,_) ->
-            try_delta_expansion l
+           C.Constant (_,Some body,_,_,_) ->
+            try_delta_expansion context l
              (C.Const (uri,exp_named_subst'))
              (CicSubstitution.subst_vars exp_named_subst' body)
-         | C.Constant (_,None,_,_) ->
+         | C.Constant (_,None,_,_,_) ->
             let t' = C.Const (uri,exp_named_subst') in
              if l = [] then t' else C.Appl (t'::l)
          | C.Variable _ -> raise ReferenceToVariable
-         | C.CurrentProof (_,_,body,_,_) -> reduceaux context l body
+         | C.CurrentProof (_,_,body,_,_,_) -> reduceaux context l body
          | C.InductiveDefinition _ -> raise ReferenceToInductiveDefinition
        )
     | C.MutInd (uri,i,exp_named_subst) ->
@@ -717,7 +720,7 @@ let simpl context =
              let (arity, r) =
 	       let o,_ = CicEnvironment.get_obj CicUniv.empty_ugraph mutind in
 		 match o with
-                     C.InductiveDefinition (tl,ingredients,r) ->
+                     C.InductiveDefinition (tl,ingredients,r,_) ->
                        let (_,_,arity,_) = List.nth tl i in
 			 (arity,r)
 		   | _ -> raise WrongUriToInductiveDefinition
@@ -798,7 +801,7 @@ let simpl context =
  and reduceaux_exp_named_subst context l =
   List.map (function uri,t -> uri,reduceaux context [] t)
  (**** Step 2 ****)
- and try_delta_expansion l term body =
+ and try_delta_expansion context l term body =
   let module C = Cic in
   let module S = CicSubstitution in
    try