+++ /dev/null
-(* 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://cs.unibo.it/helm/.
- *)
-
-(* $Id$ *)
-
-module type EqualityIndex =
- sig
- module PosEqSet : Set.S with type elt = Utils.pos * Inference.equality
- val arities : (Cic.term, int) Hashtbl.t
- type key = Cic.term
- type t = Discrimination_tree.DiscriminationTreeIndexing(PosEqSet).t
- val empty : t
- val retrieve_generalizations : t -> key -> PosEqSet.t
- val retrieve_unifiables : t -> key -> PosEqSet.t
- val init_index : unit -> unit
- val remove_index : t -> Inference.equality -> t
- val index : t -> Inference.equality -> t
- val in_index : t -> Inference.equality -> bool
- end
-
-module DT =
-struct
- module OrderedPosEquality = struct
- type t = Utils.pos * Inference.equality
- let compare = Pervasives.compare
- end
-
- module PosEqSet = Set.Make(OrderedPosEquality);;
-
- include Discrimination_tree.DiscriminationTreeIndexing(PosEqSet)
-
-
- (* DISCRIMINATION TREES *)
- let init_index () =
- Hashtbl.clear arities;
- ;;
-
- let remove_index tree equality =
- let _, _, (_, l, r, ordering), _, _ = equality in
- match ordering with
- | Utils.Gt -> remove_index tree l (Utils.Left, equality)
- | Utils.Lt -> remove_index tree r (Utils.Right, equality)
- | _ ->
- let tree = remove_index tree r (Utils.Right, equality) in
- remove_index tree l (Utils.Left, equality)
-
- let index tree equality =
- let _, _, (_, l, r, ordering), _, _ = equality in
- match ordering with
- | Utils.Gt -> index tree l (Utils.Left, equality)
- | Utils.Lt -> index tree r (Utils.Right, equality)
- | _ ->
- let tree = index tree r (Utils.Right, equality) in
- index tree l (Utils.Left, equality)
-
-
- let in_index tree equality =
- let _, _, (_, l, r, ordering), _, _ = equality in
- let meta_convertibility (pos,equality') =
- Inference.meta_convertibility_eq equality equality'
- in
- in_index tree l meta_convertibility || in_index tree r meta_convertibility
-
- end
-
-module PT =
- struct
- module OrderedPosEquality = struct
- type t = Utils.pos * Inference.equality
- let compare = Pervasives.compare
- end
-
- module PosEqSet = Set.Make(OrderedPosEquality);;
-
- include Discrimination_tree.DiscriminationTreeIndexing(PosEqSet)
-
-
- (* DISCRIMINATION TREES *)
- let init_index () =
- Hashtbl.clear arities;
- ;;
-
- let remove_index tree equality =
- let _, _, (_, l, r, ordering), _, _ = equality in
- match ordering with
- | Utils.Gt -> remove_index tree l (Utils.Left, equality)
- | Utils.Lt -> remove_index tree r (Utils.Right, equality)
- | _ ->
- let tree = remove_index tree r (Utils.Right, equality) in
- remove_index tree l (Utils.Left, equality)
-
- let index tree equality =
- let _, _, (_, l, r, ordering), _, _ = equality in
- match ordering with
- | Utils.Gt -> index tree l (Utils.Left, equality)
- | Utils.Lt -> index tree r (Utils.Right, equality)
- | _ ->
- let tree = index tree r (Utils.Right, equality) in
- index tree l (Utils.Left, equality)
-
-
- let in_index tree equality =
- let _, _, (_, l, r, ordering), _, _ = equality in
- let meta_convertibility (pos,equality') =
- Inference.meta_convertibility_eq equality equality'
- in
- in_index tree l meta_convertibility || in_index tree r meta_convertibility
-end
-