1 (* Copyright (C) 2004-2005, 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://helm.cs.unibo.it/
30 let add_obj refinement_toolkit uri obj status =
31 let lemmas = LibrarySync.add_obj refinement_toolkit uri obj in
32 {status with GrafiteTypes.objects = uri::status.GrafiteTypes.objects},
35 let add_coercion refinement_toolkit ~add_composites status uri arity =
37 LibrarySync.add_coercion ~add_composites refinement_toolkit uri arity in
38 {status with GrafiteTypes.coercions = uri :: status.GrafiteTypes.coercions},
43 type t = UriManager.uri * string
44 let compare (u1, _) (u2, _) = UriManager.compare u1 u2
47 module UriSet = Set.Make (OrderedUri)
49 (** @return l2 \ l1 *)
50 let uri_list_diff l2 l1 =
51 let module S = UriManager.UriSet in
52 let s1 = List.fold_left (fun set uri -> S.add uri set) S.empty l1 in
53 let s2 = List.fold_left (fun set uri -> S.add uri set) S.empty l2 in
54 let diff = S.diff s2 s1 in
55 S.fold (fun uri uris -> uri :: uris) diff []
57 let time_travel ~present ~past =
59 uri_list_diff present.GrafiteTypes.objects past.GrafiteTypes.objects in
60 let coercions_to_remove =
61 uri_list_diff present.GrafiteTypes.coercions past.GrafiteTypes.coercions
63 List.iter (fun uri -> LibrarySync.remove_coercion uri) coercions_to_remove;
64 List.iter LibrarySync.remove_obj objs_to_remove
67 LibrarySync.remove_all_coercions ();
68 LibraryObjects.reset_defaults ();
70 GrafiteTypes.moo_content_rev = [];
71 proof_status = GrafiteTypes.No_proof;
72 options = GrafiteTypes.no_options;