1 (* Copyright (C) 2005, HELM Team.
3 * This file is part of HELM, an Hypertextual, Electronic
4 * Library of Mathematics, developed at the Computer Science
5 * Department, University of Bologna, Italy.
7 * HELM is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version 2
10 * of the License, or (at your option) any later version.
12 * HELM is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with HELM; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
22 * For details, see the HELM World-Wide-Web page,
23 * http://cs.unibo.it/helm/.
28 open Discrimination_tree
30 module TermOT : Set.OrderedType with type t = NCic.term = struct
32 let compare = Pervasives.compare
35 module TermSet = Set.Make(TermOT)
37 module TermListOT : Set.OrderedType with type t = NCic.term list =
39 type t = NCic.term list
40 let compare = Pervasives.compare
43 module TermListSet : Set.S with type elt = NCic.term list =
47 module NCicIndexable : Indexable
48 with type input = NCic.term
49 and type constant_name = NReference.reference = struct
51 type input = NCic.term
52 type constant_name = NReference.reference
55 | Constant (ref,arity) ->
56 "("^NReference.string_of_reference ref ^ "," ^ string_of_int arity^")"
58 "("^string_of_int i ^ "," ^ string_of_int arity^")"
60 | Proposition -> "Prop"
65 let path_string_of t =
66 let rec aux arity depth = function
67 | NCic.Appl ((NCic.Meta _|NCic.Implicit _)::_) -> [Variable]
68 | NCic.Appl (NCic.Lambda _ :: _) -> [Variable] (* maybe we should b-reduce *)
69 | NCic.Appl [] -> assert false
70 | NCic.Appl l when depth > 10 || List.length l > 50 -> [Variable]
71 | NCic.Appl (hd::tl) ->
72 aux (List.length tl) depth hd @
73 List.flatten (List.map (aux 0 (depth+1)) tl)
74 | NCic.Lambda _ | NCic.Prod _ -> [Variable]
75 (* I think we should CicSubstitution.subst Implicit t *)
76 | NCic.LetIn _ -> [Variable] (* z-reduce? *)
77 | NCic.Meta _ | NCic.Implicit _ -> assert (arity = 0); [Variable]
78 | NCic.Rel i -> [Bound (i, arity)]
79 | NCic.Sort (NCic.Prop) -> assert (arity=0); [Proposition]
80 | NCic.Sort _ -> assert (arity=0); [Datatype]
81 | NCic.Const (u) -> [Constant (u, arity)]
82 | NCic.Match _ -> [Dead]
89 | Constant (u1,a1),Constant (u2,a2) ->
90 let x = NReference.compare u1 u2 in
91 if x = 0 then Pervasives.compare a1 a2 else x
92 | e1,e2 -> Pervasives.compare e1 e2
95 let string_of_path l = String.concat "." (List.map ppelem l) ;;
99 module DiscriminationTree = Make(NCicIndexable)(TermSet)