refactoring: helena sources are now in a dedicated directory

[helm.git] / helm / software / lambda-delta / complete_rg / crg.ml

diff --git a/helm/software/lambda-delta/complete_rg/crg.ml b/helm/software/lambda-delta/complete_rg/crg.ml
deleted file mode 100644 (file)
index 07a4cb3..0000000
--- a/helm/software/lambda-delta/complete_rg/crg.ml
+++ /dev/null
@@ -1,94 +0,0 @@
-(*
-    ||M||  This file is part of HELM, an Hypertextual, Electronic        
-    ||A||  Library of Mathematics, developed at the Computer Science     
-    ||T||  Department, University of Bologna, Italy.                     
-    ||I||                                                                
-    ||T||  HELM is free software; you can redistribute it and/or         
-    ||A||  modify it under the terms of the GNU General Public License   
-    \   /  version 2 or (at your option) any later version.              
-     \ /   This software is distributed as is, NO WARRANTY.              
-      V_______________________________________________________________ *)
-
-(* kernel version: complete, relative, global *)
-(* note          : fragment of complete lambda-delta serving as abstract layer *) 
-
-module Y = Entity
-
-type uri = Y.uri
-type id = Y.id
-type attrs = Y.attrs
-
-type bind = Abst of term list (* domains *)
-          | Abbr of term list (* bodies  *)
-          | Void of int       (* number of exclusions *)
-
-and term = TSort of attrs * int              (* attrs, hierarchy index *)
-         | TLRef of attrs * int * int        (* attrs, position indexes *)
-         | TGRef of attrs * uri              (* attrs, reference *)
-         | TCast of attrs * term * term      (* attrs, domain, element *)
-         | TAppl of attrs * term list * term (* attrs, arguments, function *)
-        | TProj of attrs * lenv * term      (* attrs, closure, member *)
-        | TBind of attrs * bind * term      (* attrs, binder, scope *)
-
-and lenv = ESort                        (* top *)
-         | EProj of lenv * attrs * lenv (* environment, attrs, closure *) 
-         | EBind of lenv * attrs * bind (* environment, attrs, binder *)
-
-type entity = term Y.entity
-
-(* helpers ******************************************************************)
-
-let mk_uri si root s =
-   let kernel = if si then "crg-si" else "crg" in
-   String.concat "/" ["ld:"; kernel; root; s ^ ".ld"]
-
-let empty_lenv = ESort
-
-let push_bind f lenv a b = f (EBind (lenv, a, b))
-
-let push_proj f lenv a e = f (EProj (lenv, a, e))
-
-let push2 err f lenv attr ?t () = match lenv, t with
-   | EBind (e, a, Abst ws), Some t -> f (EBind (e, (attr :: a), Abst (t :: ws)))
-   | EBind (e, a, Abbr vs), Some t -> f (EBind (e, (attr :: a), Abbr (t :: vs)))
-   | EBind (e, a, Void n), None    -> f (EBind (e, (attr :: a), Void (succ n)))
-   | _                             -> err ()
-
-(* this id not tail recursive *)
-let resolve_lref err f id lenv =
-   let rec aux f i k = function
-     | ESort                  -> err ()
-     | EBind (tl, a, _)       ->
-        let err kk = aux f (succ i) (k + kk) tl in
-       let f j = f i j (k + j) in
-       Y.resolve err f id a
-     | EProj _                -> assert false (* TODO *)
-   in
-   aux f 0 0 lenv
-
-let rec get_name err f i j = function
-   | ESort                      -> err i
-   | EBind (_, a, _) when i = 0 -> 
-      let err () = err i in
-      Y.get_name err f j a
-   | EBind (tl, _, _)           -> 
-      get_name err f (pred i) j tl
-   | EProj (tl, _, e)           ->
-      let err i = get_name err f i j tl in 
-      get_name err f i j e
-
-let get_index err f i j lenv =
-   let rec aux f i k = function
-      | ESort                      -> err i
-      | EBind (_, a, _) when i = 0 ->
-        if Y.count_names a > j then f (k + j) else err i
-      | EBind (tl, a, _)           -> 
-         aux f (pred i) (k + Y.count_names a) tl
-      | EProj _                    -> assert false (* TODO *)
-   in
-   aux f i 0 lenv
-
-let rec names_of_lenv ns = function
-   | ESort            -> ns
-   | EBind (tl, a, _) -> names_of_lenv (Y.rev_append_names ns a) tl
-   | EProj (tl, _, e) -> names_of_lenv (names_of_lenv ns e) tl