1 (* Copyright (C) 2002, 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.
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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.
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13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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15 * GNU General Public License for more details.
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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/.
27 current proof (proof uri * metas * (in)complete proof * term to be prooved),
30 type proof = (UriManager.uri * Cic.metasenv * Cic.term * Cic.term) option
31 (** current goal, integer index *)
32 type goal = int option
33 (** current status: (proof, goal) pair *)
34 type status = proof * goal
36 a tactic: make a transition from one status to another one or, usually,
37 raise a "Fail" (@see Fail) exception in case of failure
39 type tactic = status:status -> status
42 exception Fail of string