3 * Stefano Zacchiroli <zack@cs.unibo.it>
4 * for the HELM Team http://helm.cs.unibo.it/
6 * This file is part of HELM, an Hypertextual, Electronic
7 * Library of Mathematics, developed at the Computer Science
8 * Department, University of Bologna, Italy.
10 * HELM is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public License
12 * as published by the Free Software Foundation; either version 2
13 * of the License, or (at your option) any later version.
15 * HELM is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with HELM; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
25 * For details, see the HELM World-Wide-Web page,
26 * http://helm.cs.unibo.it/
32 let rec string_of_hint = function
33 | Use_ring -> "Use Ring, Luke!"
34 | Use_fourier -> "Use Fourier, Luke!"
35 | Use_reflexivity -> "Use reflexivity, Luke!"
36 | Use_symmetry -> "Use symmetry, Luke!"
37 | Use_assumption -> "Use assumption, Luke!"
38 | Use_contradiction -> "Use contradiction, Luke!"
39 | Use_exists -> "Use exists, Luke!"
40 | Use_split -> "Use split, Luke!"
41 | Use_left -> "Use left, Luke!"
42 | Use_right -> "Use right, Luke!"
43 | Use_apply term -> sprintf "Apply %s, Luke!" term
44 | Hints hints -> String.concat "; " (List.map string_of_hint hints)