X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Fsoftware%2Fhelena%2Fsrc%2Fbasic_ag%2FbagCrg.ml;h=31ce2afa549b0e36ff92d14714aacc5cf5dd1262;hb=88977b2d546e547e23b046792fe2ad8f6ff192a4;hp=8fbf7cf79a609e3a7aa8826c12301125ae9de60a;hpb=95872555aaa040a22ad2d93cb1278f79e20da70c;p=helm.git

diff --git a/helm/software/helena/src/basic_ag/bagCrg.ml b/helm/software/helena/src/basic_ag/bagCrg.ml
index 8fbf7cf79..31ce2afa5 100644
--- a/helm/software/helena/src/basic_ag/bagCrg.ml
+++ b/helm/software/helena/src/basic_ag/bagCrg.ml
@@ -10,99 +10,84 @@
       V_______________________________________________________________ *)
 
 module C = Cps
+module P = Marks
+module N = Layer
 module E = Entity
-module J = Marks
-module N = Level
 module D = Crg
 module Z = Bag
 
 (* internal functions: crg to bag term **************************************)
 
-let rec shift t = function
-   | _, []                    -> t
-   | (a, l, b) :: c, _ :: ns -> shift (Z.Bind (a, l, b, t)) (c, ns)
-   | _                        -> assert false
-
-let rec xlate_term xlate_bind f c = function
-   | D.TSort (_, h)     -> f (Z.Sort h)
-   | D.TGRef (_, s)     -> f (Z.GRef s)
-   | D.TLRef (a, _, _)  -> 
-      let f i = 
-         let _, l, _ = List.nth c i in 
-	 f (Z.LRef l)
-      in 
-      E.apix C.err f a
-   | D.TCast (_, u, t)  ->
+let rec xlate_term st f c = function
+   | D.TSort k         -> f (Z.Sort k)
+   | D.TGRef (_, s)    -> f (Z.GRef s)
+   | D.TLRef (_, i)    ->
+      let _, l, _ = List.nth c i in f (Z.LRef l)
+   | D.TCast (u, t)    ->
       let f tt uu = f (Z.Cast (uu, tt)) in
-      let f tt = xlate_term xlate_bind (f tt) c u in
-      xlate_term xlate_bind f c t
-   | D.TAppl (_, vs, t) ->
-      let map f v tt = let f vv = f (Z.Appl (vv, tt)) in xlate_term xlate_bind f c v in
-      let f tt = C.list_fold_right f map vs tt in
-      xlate_term xlate_bind f c t
-   | D.TProj (_, e, t)  ->
-      xlate_term xlate_bind f c (D.tshift e t)
+      let f tt = xlate_term st (f tt) c u in
+      xlate_term st f c t
+   | D.TAppl (_, v, t) ->
+      let f tt vv = f (Z.Appl (vv, tt)) in
+      let f tt = xlate_term st (f tt) c v in
+      xlate_term st f c t
+   | D.TProj (e, t)    ->
+      D.shift (xlate_term st f c) e t
 (* this case should be removed by improving alpha-conversion *)
-   | D.TBind (ab, D.Abst (n, ws), D.TCast (ac, u, t)) ->
-      xlate_term xlate_bind f c (D.TCast (ac, D.TBind (ab, D.Abst (N.pred n, ws), u), D.TBind (ab, D.Abst (n, ws), t)))
-   | D.TBind (a, b, t)  ->
-      let g _ ns = ns in
-      let ns = E.get_names g a in  
-      let cc = xlate_bind C.start c ns b in
-      let f tt = f (shift tt (cc, ns)) in
-      xlate_term xlate_bind f cc t
-
-let rec xlate_bind f c ns = function
-   | D.Abst (_, ws) ->
-      let map f n w c =
-         let f ww = Z.push "xlate_bind" f c [n] (J.new_location ()) (Z.Abst ww) in 
-	 xlate_term xlate_bind f c w
+   | D.TBind (y, D.Abst (x, n, ws), D.TCast (u, t)) ->
+      xlate_term st f c (D.TCast (D.TBind (y, D.Abst (x, N.minus st n 1, ws), u), D.TBind (y, D.Abst (x, n, ws), t)))
+   | D.TBind (y, b, t) ->
+      let f cc =
+         let a, l, b = List.hd cc in
+         let f tt = f (Z.Bind (a, l, b, tt)) in
+         xlate_term st f cc t
       in
-      C.list_fold_right2 f map ns ws c
-   | D.Abbr vs      ->
-      let map f n v c = 
-	 let f vv = Z.push "xlate_bind" f c [n] (J.new_location ()) (Z.Abbr vv) in
-	 xlate_term xlate_bind f c v
-      in
-      C.list_fold_right2 f map ns vs c
-   | D.Void _       ->
-      let map f n c = Z.push "xlate_bind" f c [n] (J.new_location ()) Z.Void in
-      C.list_fold_right f map ns c
+      xlate_bind st f c y b
+
+and xlate_bind st f c y = function
+   | D.Abst (_, _, w) ->
+      let f ww = Z.push "xlate_bind" f c y (P.new_mark ()) (Z.Abst ww) in 
+      xlate_term st f c w
+   | D.Abbr v         -> 
+      let f vv = Z.push "xlate_bind" f c y (P.new_mark ()) (Z.Abbr vv) in
+      xlate_term st f c v
+   | D.Void           ->
+      Z.push "xlate_bind" f c y (P.new_mark ()) Z.Void
 
 (* internal functions: bag to crg term **************************************)
 
 let rec xlate_bk_term f c = function
-   | Z.Sort h            -> f (D.TSort ([], h))
-   | Z.GRef s            -> f (D.TGRef ([], s))
+   | Z.Sort k            -> f (D.TSort k)
+   | Z.GRef s            -> f (D.TGRef (E.empty_node, s))
    | Z.LRef l            -> 
-       let f i = f (D.TLRef ([], i, 0)) in
+       let f i = f (D.TLRef (E.empty_node, i)) in
        Z.nth C.err f l c
    | Z.Cast (u, t)  ->
-      let f tt uu = f (D.TCast ([], uu, tt)) in
+      let f tt uu = f (D.TCast (uu, tt)) in
       let f tt = xlate_bk_term (f tt) c u in
       xlate_bk_term f c t 
    | Z.Appl (u, t)       ->
-      let f tt uu = f (D.TAppl ([], [uu], tt)) in
+      let f tt uu = f (D.TAppl (E.appl_attrs false, uu, tt)) in
       let f tt = xlate_bk_term (f tt) c u in
       xlate_bk_term f c t 
-   | Z.Bind (a, l, b, t) ->
-      let f tt bb = f (D.TBind (a, bb, tt)) in      
+   | Z.Bind (y, l, b, t) ->
+      let f tt bb = f (D.TBind (y, bb, tt)) in      
       let f tt = xlate_bk_bind (f tt) c b in
-      let cc = Z.push "xlate_bk_term" C.start c a l b in
+      let cc = Z.push "xlate_bk_term" C.start c y l b in
       xlate_bk_term f cc t
 
 and xlate_bk_bind f c = function
    | Z.Abst t ->
-      let f tt = f (D.Abst (N.infinite, [tt])) in
+      let f tt = f (D.Abst (false, N.infinity, tt)) in
       xlate_bk_term f c t
    | Z.Abbr t ->
-      let f tt = f (D.Abbr [tt]) in
+      let f tt = f (D.Abbr tt) in
       xlate_bk_term f c t
-   | Z.Void   -> f (D.Void 1)
+   | Z.Void   -> f D.Void
 
 (* interface functions ******************************************************)
 
-let bag_of_crg f t =
-   xlate_term xlate_bind f Z.empty_lenv t
+let bag_of_crg st f t =
+   xlate_term st f Z.empty_lenv t
 
 let crg_of_bag f t = xlate_bk_term f Z.empty_lenv t