X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Fsoftware%2Flambda-delta%2Fsrc%2Fbasic_rg%2Fbrg.ml;h=be4e6f9b97269bfb262229981cdae00c9e167c4e;hb=cb3e2526b3788172cf4a11e4c0082c12e8d233d0;hp=efc5d7556914bc6b8976b0ade53be6a751c042ee;hpb=ab13cfa248f0ee58d239ceeddfb50ec49a6b5c6d;p=helm.git

diff --git a/helm/software/lambda-delta/src/basic_rg/brg.ml b/helm/software/lambda-delta/src/basic_rg/brg.ml
index efc5d7556..be4e6f9b9 100644
--- a/helm/software/lambda-delta/src/basic_rg/brg.ml
+++ b/helm/software/lambda-delta/src/basic_rg/brg.ml
@@ -12,13 +12,15 @@
 (* kernel version: basic, relative, global *)
 (* note          : ufficial basic lambda-delta *) 
 
-type uri = Entity.uri
-type id = Entity.id
-type attrs = Entity.attrs
+module E = Entity
+module N = Level
 
-type bind = Void         (*      *)
-          | Abst of term (* type *)
-          | Abbr of term (* body *)
+type uri = E.uri
+type attrs = E.attrs
+
+type bind = Void                   (*             *)
+          | Abst of N.level * term (* level, type *)
+          | Abbr of term           (* body        *)
 
 and term = Sort of attrs * int         (* attrs, hierarchy index *)
          | LRef of attrs * int         (* attrs, position index *)
@@ -27,21 +29,15 @@ and term = Sort of attrs * int         (* attrs, hierarchy index *)
          | Appl of attrs * term * term (* attrs, argument, function *)
          | Bind of attrs * bind * term (* attrs, binder, scope *)
 
-type entity = term Entity.entity (* attrs, uri, binder *)
+type entity = term E.entity (* attrs, uri, binder *)
 
 type lenv = Null
 (* Cons: tail, relative local environment, attrs, binder *) 
           | Cons of lenv * lenv * attrs * bind 
 
-(* helpers ******************************************************************)
-
-let mk_uri si root s =
-   let kernel = if si then "brg-si" else "brg" in
-   String.concat "/" ["ld:"; kernel; root; s ^ ".ld"]
-
 (* Currified constructors ***************************************************)
 
-let abst w = Abst w
+let abst n w = Abst (n, w)
 
 let abbr v = Abbr v
 
@@ -53,7 +49,7 @@ let appl a u t = Appl (a, u, t)
 
 let bind a b t = Bind (a, b, t)
 
-let bind_abst a u t = Bind (a, Abst u, t)
+let bind_abst n a u t = Bind (a, Abst (n, u), t)
 
 let bind_abbr a v t = Bind (a, Abbr v, t)
 
@@ -76,8 +72,3 @@ let get e i = get i e
 let rec fold_right f map e x = match e with   
    | Null              -> f x
    | Cons (e, c, a, b) -> fold_right (map f e c a b) map e x
-
-(* used in MetaBrg.unwind_to_xlate_term *)
-let rec fold_left map x = function
-   | Null              -> x
-   | Cons (e, _, a, b) -> fold_left map (map x a b) e