X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fcomponents%2Fng_tactics%2FnTacStatus.ml;h=2fa02c30747ee67008c474b85d29187a365a8925;hb=f9abd21eb0d26cf9b632af4df819225be4d091e3;hp=9a6358baaf3e98ee5d4de13bd12e3ee9c02e2e61;hpb=894d518aa760c9f816ddb0dc2b3fa88e1fe20a94;p=helm.git

diff --git a/matita/components/ng_tactics/nTacStatus.ml b/matita/components/ng_tactics/nTacStatus.ml
index 9a6358baa..2fa02c307 100644
--- a/matita/components/ng_tactics/nTacStatus.ml
+++ b/matita/components/ng_tactics/nTacStatus.ml
@@ -29,9 +29,12 @@ let wrap fname f x =
   with 
   | MultiPassDisambiguator.DisambiguationError _ 
   | NCicRefiner.RefineFailure _ 
+  | NCicRefiner.Uncertain _ 
   | NCicUnification.UnificationFailure _ 
+  | NCicUnification.Uncertain _ 
   | NCicTypeChecker.TypeCheckerFailure _ 
-  | NCicMetaSubst.MetaSubstFailure _ as exn -> fail ~exn (lazy fname)
+  | NCicMetaSubst.MetaSubstFailure _
+  | NCicMetaSubst.Uncertain _ as exn -> fail ~exn (lazy fname)
 ;;
 
 class type g_eq_status =
@@ -157,7 +160,7 @@ let relocate status destination (source,t as orig) =
             let u, d, metasenv, subst, o = status#obj in
             pp(lazy("delifting as " ^ 
               status#ppterm ~metasenv ~subst ~context:source 
-               (NCic.Meta (0,lc))));
+               (NCic.Meta (-1,lc))));
             let (metasenv, subst), t =
               NCicMetaSubst.delift status
                  ~unify:(fun m s c t1 t2 -> 
@@ -165,7 +168,7 @@ let relocate status destination (source,t as orig) =
                    with 
                     | NCicUnification.UnificationFailure _ 
                     | NCicUnification.Uncertain _ -> None) 
-               metasenv subst source 0 lc t
+               metasenv subst source (-1) lc t
             in
             let status = status#set_obj (u, d, metasenv, subst, o) in
             status, (ctx,t))
@@ -184,9 +187,11 @@ let term_of_cic_term s t c =
 let disambiguate status context t ty =
  let status, expty = 
    match ty with 
-   | None -> status, None 
-   | Some ty -> 
-       let status, (_,x) = relocate status context ty in status, Some x 
+   | `XTSome ty -> 
+       let status, (_,x) = relocate status context ty in status, `XTSome x 
+   | `XTNone -> status, `XTNone 
+   | `XTSort -> status, `XTSort
+   | `XTInd  -> status, `XTInd
  in
  let uri,height,metasenv,subst,obj = status#obj in
  let metasenv, subst, status, t = 
@@ -251,9 +256,11 @@ let refine status ctx term expty =
   let status, (_,term) = relocate status ctx term in
   let status, expty = 
     match expty with
-      None -> status, None 
-    | Some e -> 
-        let status, (_, e) = relocate status ctx e in status, Some e
+    | `XTSome e -> 
+        let status, (_, e) = relocate status ctx e in status, `XTSome e
+    | `XTNone -> status, `XTNone 
+    | `XTSort -> status, `XTSort
+    | `XTInd  -> status, `XTInd
   in
   let name,height,metasenv,subst,obj = status#obj in
   let metasenv,subst,t,ty = 
@@ -286,7 +293,7 @@ let instantiate status ?refine:(dorefine=true) i t =
  let _,_,metasenv,_,_ = status#obj in
  let gname, context, gty = List.assoc i metasenv in
   if dorefine then
-   let status, (_,t), (_,ty) = refine status context t (Some (context,gty)) in
+   let status, (_,t), (_,ty) = refine status context t (`XTSome (context,gty)) in
     to_subst status i (gname,context,t,ty)
   else
    let status,(_,ty) = typeof status context t in
@@ -297,7 +304,7 @@ let instantiate_with_ast status i t =
  let _,_,metasenv,_,_ = status#obj in
  let gname, context, gty = List.assoc i metasenv in
  let ggty = mk_cic_term context gty in
- let status, (_,t) = disambiguate status context t (Some ggty) in
+ let status, (_,t) = disambiguate status context t (`XTSome ggty) in
   to_subst status i (gname,context,t,gty)
 ;;
 
@@ -397,7 +404,7 @@ let select_term
         let ctx = (n, NCic.Decl s2) :: ctx in
         let status, t = select status ctx t1 t2 in
         status, NCic.Prod (n,s,t)
-    | NCic.Appl l1, NCic.Appl l2 ->
+    | NCic.Appl l1, NCic.Appl l2 when List.length l1 = List.length l2 ->
         let status, l = 
            List.fold_left2
              (fun (status,l) x y -> 
@@ -406,7 +413,8 @@ let select_term
              (status,[]) l1 l2
         in
         status, NCic.Appl (List.rev l)
-    | NCic.Match (_,ot1,t1,pl1), NCic.Match (u,ot2,t2,pl2) ->
+    | NCic.Match (_,ot1,t1,pl1), NCic.Match (u,ot2,t2,pl2)
+      when List.length pl1 = List.length pl2 ->
         let status, t = select status ctx t1 t2 in
         let status, ot = select status ctx ot1 ot2 in
         let status, pl = 
@@ -420,7 +428,7 @@ let select_term
     | NCic.Implicit `Hole, t -> 
         (match wanted with
         | Some wanted -> 
-             let status', wanted = disambiguate status ctx wanted None in
+             let status', wanted = disambiguate status ctx wanted `XTNone in
              pp(lazy("wanted: "^ppterm status' wanted));
              let (status',found), t' = match_term status' ctx wanted t in
               if found then status',t' else status,t