X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Fsoftware%2Flambda-delta%2Fbasic_ag%2FbagType.ml;h=9cf5c5cb7d6334b9f69ab5d4eb7cb8190e75d3e9;hb=13c3708fc59d999727ee214e8ece1f03661a9737;hp=4ffa2e1f4cc7022a01ee53221ca34f63bcc2502c;hpb=d38cea7e4865091412e1414f5594dd7c124de47e;p=helm.git

diff --git a/helm/software/lambda-delta/basic_ag/bagType.ml b/helm/software/lambda-delta/basic_ag/bagType.ml
index 4ffa2e1f4..9cf5c5cb7 100644
--- a/helm/software/lambda-delta/basic_ag/bagType.ml
+++ b/helm/software/lambda-delta/basic_ag/bagType.ml
@@ -14,7 +14,6 @@ module C = Cps
 module S = Share
 module L = Log
 module H = Hierarchy
-module I = AutItem
 module B = Bag
 module O = BagOutput
 module E = BagEnvironment
@@ -44,50 +43,10 @@ let mk_gref u l =
    let map t v = B.Appl (v, t) in
    List.fold_left map (B.GRef u) l
 
-let add_coercion f t (i, uri, vs) =
-   let rec add f x = match x with
-      | B.Sort _
-      | B.LRef _
-      | B.GRef _                       -> f x
-      | B.Cast (u, t)                  -> 
-         let f uu =
-	    let f tt = f (S.sh2 u uu t tt x B.cast) in
-	    add f t
-	 in
-         add f u
-      | B.Appl (v, t)                  ->
-         let f vv =
-	    let f tt = f (S.sh2 v vv t tt x B.appl) in
-	    add f t
-	 in
-         add f v
-      | B.Bind (l, _, _, _) when i = l -> 
-         if U.eq uri I.imp then f (mk_gref I.mt (vs @ [x])) else
-         if U.eq uri I.all then f (mk_gref I.alli (vs @ [x])) else
-	 assert false
-      | B.Bind (l, id, B.Abst w, t)    ->
-         let f ww =
-	    let f tt = f (S.sh2 w ww t tt x (B.bind_abst l id)) in
-	    add f t
-	 in
-	 add f w
-      | B.Bind (l, id, B.Abbr v, t)    ->
-         let f vv =
-	    let f tt = f (S.sh2 v vv t tt x (B.bind_abbr l id)) in
-	    add f t
-	 in
-	 add f v
-      | B.Bind (l, id, B.Void, t)      ->
-         let f tt = f (S.sh1 t tt x (B.bind l id B.Void)) in
-	 add f t
-   in
-   add f t
-
-let add_coercions f = C.list_fold_left f add_coercion
-
 (* Interface functions ******************************************************)
 
 let rec b_type_of f g c x = 
+(*   L.warn "Entering T.b_type_of"; *)
    log1 "Now checking" c x;
    match x with
    | B.Sort h                    ->
@@ -117,7 +76,7 @@ let rec b_type_of f g c x =
          f (S.sh2 v xv t xt x (B.bind_abbr l id)) (B.bind_abbr l id xv tt)
       in
       let f xv cc = b_type_of (f xv) g cc t in
-      let f xv = B.push (f xv) c l id (B.Abbr xv) in
+      let f xv = B.push "type abbr" (f xv) c l id (B.Abbr xv) in
       let f xv vv = match xv with 
 	 | B.Cast _ -> f xv
          | _        -> f (B.Cast (vv, xv))
@@ -128,36 +87,26 @@ let rec b_type_of f g c x =
 	 f (S.sh2 u xu t xt x (B.bind_abst l id)) (B.bind_abst l id xu tt)
       in
       let f xu cc = b_type_of (f xu) g cc t in
-      let f xu _ = B.push (f xu) c l id (B.Abst xu) in
+      let f xu _ = B.push "type abst" (f xu) c l id (B.Abst xu) in
       type_of f g c u
    | B.Bind (l, id, B.Void, t)   ->
       let f xt tt = 
          f (S.sh1 t xt x (B.bind l id B.Void)) (B.bind l id B.Void tt)
       in
       let f cc = b_type_of f g cc t in
-      B.push f c l id B.Void   
+      B.push "type void" f c l id B.Void   
    | B.Appl (v, t)            ->
       let f xv vv xt tt = function
 	 | R.Abst w                             -> 
             L.box (succ level);
 	    L.log O.specs (succ level) (L.t_items1 "Just scanned" c w);
 	    L.unbox (succ level);
-	    let f = function
-               | Some [] -> f (S.sh2 v xv t xt x B.appl) (B.appl xv tt)
-	       | Some l  ->
-	          L.log O.specs level (L.items1 "Rechecking coerced term");
-		  let f xv = b_type_of f g c (S.sh2 v xv t xt x B.appl) in
-	          add_coercions f xv l
-	       | None   -> error3 c xv vv w
+	    let f a =                
+(*	       L.warn (Printf.sprintf "Convertible: %b" a); *)
+	       if a then f (S.sh2 v xv t xt x B.appl) (B.appl xv tt)
+	       else error3 c xv vv w
 	    in
 	    R.are_convertible f c w vv
-(* inserting a missing "modus ponens" *)
-	 | R.GRef (uri, vs) when U.eq uri I.imp ->
-	    L.log O.specs level (L.items1 "Rechecking coerced term");
-	    b_type_of f g c (mk_gref I.mp (vs @ [xv; xt]))
-	 | R.GRef (uri, vs) when U.eq uri I.all ->
-	    L.log O.specs level (L.items1 "Rechecking coerced term");
-	    b_type_of f g c (mk_gref I.alle (vs @ [xt; xv]))
 	 | _                                    -> 
 	    error1 "not a function" c xt
       in
@@ -165,13 +114,9 @@ let rec b_type_of f g c x =
       let f xv vv = b_type_of (f xv vv) g c t in
       type_of f g c v
    | B.Cast (u, t)            ->
-      let f xu xt tt = function 
-         | Some [] -> f (S.sh2 u xu t xt x B.cast) xu
-	 | Some l  ->
-	    L.log O.specs level (L.items1 "Rechecking coerced term");
-	    let f xt = b_type_of f g c (S.sh2 u xu t xt x B.cast) in
-	    add_coercions f xt l
-	 | None    -> error3 c xt tt xu
+      let f xu xt tt a =  
+         (* L.warn (Printf.sprintf "Convertible: %b" a); *)
+	 if a then f (S.sh2 u xu t xt x B.cast) xu else error3 c xt tt xu
       in
       let f xu xt tt = R.are_convertible (f xu xt tt) c xu tt in
       let f xu _ = b_type_of (f xu) g c t in
@@ -180,4 +125,3 @@ let rec b_type_of f g c x =
 and type_of f g c x =
    let f t u = L.unbox level; f t u in
    L.box level; b_type_of f g c x
-