1 (* Copyright (C) 2000, 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/.
26 (* AUTORS: Ferruccio Guidi <fguidi@cs.unibo.it>
27 * Claudio Sacerdoti Coen <sacerdot@cs.unibo.it>
30 (* low level types *********************************************************)
33 type position = MainHypothesis
43 type spec = MustObj of uri list * position list * depth list
44 | MustSort of sort list * position list * depth list
45 | MustRel of position list * depth list
46 | OnlyObj of uri list * position list * depth list
47 | OnlySort of sort list * position list * depth list
48 | OnlyRel of position list * depth list
49 | Universe of position list
51 (* high-level types ********************************************************)
53 type optional_depth = int option
55 type full_position = [ `MainHypothesis of optional_depth
56 | `MainConclusion of optional_depth
62 type main_position = [ `MainHypothesis of optional_depth
63 | `MainConclusion of optional_depth
66 type r_obj = full_position * uri
67 type r_sort = main_position * sort
68 type r_rel = main_position
70 type must_restrictions = (r_obj list * r_rel list * r_sort list)
71 type only_restrictions =
72 (r_obj list option * r_rel list option * r_sort list option)
74 type universe = position list