* Part of matita that used to deal with the library moved into ocaml/library

[helm.git] / helm / ocaml / cic_unification / coercDb.ml

diff --git a/helm/ocaml/cic_unification/coercDb.ml b/helm/ocaml/cic_unification/coercDb.ml
deleted file mode 100644 (file)
index 437ad65..0000000
--- a/helm/ocaml/cic_unification/coercDb.ml
+++ /dev/null
@@ -1,75 +0,0 @@
-(* Copyright (C) 2005, HELM Team.
- * 
- * This file is part of HELM, an Hypertextual, Electronic
- * Library of Mathematics, developed at the Computer Science
- * Department, University of Bologna, Italy.
- * 
- * HELM is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- * 
- * HELM is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with HELM; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
- * MA  02111-1307, USA.
- * 
- * For details, see the HELM World-Wide-Web page,
- * http://helm.cs.unibo.it/
- *)
-
-type coerc_carr = Uri of UriManager.uri | Sort of Cic.sort | Term of Cic.term
-exception EqCarrNotImplemented of string Lazy.t
-exception EqCarrOnNonMetaClosed
-
-let db = ref []
-let use_coercions = ref true
-
-let coerc_carr_of_term t =
-  try
-    Uri (CicUtil.uri_of_term t)
-  with Invalid_argument _ ->
-    match t with
-    | Cic.Sort s -> Sort s
-    | t -> Term t
-;;
-
-let eq_carr src tgt =
-  match src, tgt with
-  | Uri src, Uri tgt -> UriManager.eq src tgt
-  | Sort (Cic.Type _), Sort (Cic.Type _) -> true
-  | Sort src, Sort tgt when src = tgt -> true
-  | Term t1, Term t2 ->
-    if CicUtil.is_meta_closed t1 && CicUtil.is_meta_closed t2 then
-      raise 
-        (EqCarrNotImplemented 
-          (lazy ("Unsupported carr for coercions: " ^ 
-            CicPp.ppterm t1 ^ " or " ^ CicPp.ppterm t2)))
-    else raise EqCarrOnNonMetaClosed
-  | _, _ -> false
-
-let name_of_carr = function
-  | Uri u -> UriManager.name_of_uri u
-  | Sort s -> CicPp.ppsort s
-  | Term t -> CicPp.ppterm t
-  
-
-let to_list () =
-  !db
-
-let add_coercion c =
-  db := c :: !db
-
-let remove_coercion p = 
-  db := List.filter (fun u -> not(p u)) !db
-
-let find_coercion f =
-  if !use_coercions then
-    List.map (fun (_,_,x) -> x) (List.filter (fun (s,t,_) -> f (s,t)) !db)
-  else []
-