1 (* Copyright (C) 2004, 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/
26 open CicTextualParser2
31 [ t1 = term; SYMBOL <:unicode<lor>> (* ∨ *); t2 = term ->
32 return_term loc (CicAst.Appl [CicAst.Symbol ("or", 0); t1; t2])
37 [ t1 = term; SYMBOL <:unicode<land>> (* ∧ *); t2 = term ->
38 return_term loc (CicAst.Appl [CicAst.Symbol ("and", 0); t1; t2])
43 [ SYMBOL <:unicode<lnot>> (* ¬ *); t = term ->
44 return_term loc (CicAst.Appl [CicAst.Symbol ("not", 0); t])
49 (* TODO a lot of hard coded URIs, move them in HelmLibraryObjects *)
52 (* TODO cut-and-pasted code: here, in arit_notation.ml and
53 * disambiguateChoices.ml *)
54 let const s = Cic.Const (s, []) in
55 let mutind s = Cic.MutInd (s, 0, []) in
56 DisambiguateChoices.add_symbol_choice "eq"
57 ("leibnitz's equality",
62 | _ -> raise DisambiguateChoices.Invalid_choice
65 Cic.MutInd (HelmLibraryObjects.Logic.eq_URI, 0, []);
66 Cic.Implicit (Some `Type); t1; t2
68 DisambiguateChoices.add_binary_op "and" "logical and"
69 (mutind HelmLibraryObjects.Logic.and_URI);
70 DisambiguateChoices.add_binary_op "or" "logical or"
71 (mutind HelmLibraryObjects.Logic.or_URI);
72 DisambiguateChoices.add_unary_op "not" "logical not"
73 (const HelmLibraryObjects.Logic.not_URI);
75 (* vim:set encoding=utf8: *)