(* 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 *)
| 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
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)
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