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 type direction = [ `Left | `Right ]
27 type reduction_kind = [ `Reduce | `Simpl | `Whd ]
28 type 'term pattern = Pattern of 'term
30 (* when an 'ident option is None, the default is to apply the tactic
31 to the current goal *)
33 type ('term, 'ident) tactic =
34 | LocatedTactic of CicAst.location * ('term, 'ident) tactic
40 | Change of 'term * 'term * 'ident option (* what, with what, where *)
41 | Change_pattern of 'term pattern * 'term * 'ident option
42 (* what, with what, where *)
45 | Decompose of 'ident * 'ident list (* where, which principles *)
46 | Discriminate of 'ident
47 | Elim of 'term * 'term option (* what to elim, which principle to use *)
51 | Fold of reduction_kind * 'term
55 | Intros of int option * 'ident list
57 | LetIn of 'term * 'ident
58 (* | Named_intros of 'ident list (* joined with Intros above *) *)
59 | Reduce of reduction_kind * 'term pattern * 'ident option (* what, where *)
61 | Replace of 'term * 'term (* what, with what *)
62 | Replace_pattern of 'term pattern * 'term
63 | Rewrite of direction * 'term * 'ident option
68 | Transitivity of 'term
83 | Qed of string option
85 * Name is needed when theorem was started without providing a name
88 | Theorem of thm_flavour * string option * 'term * 'term option
89 (** flavour, name, type, body
90 * - name is absent when an unnamed theorem is being proved, tipically in
92 * - body is present when its given along with the command, otherwise it
93 * will be given in proof editing mode using the tactical language
98 type ('term, 'ident) tactical =
99 | LocatedTactical of CicAst.location * ('term, 'ident) tactical
101 | Tactic of ('term, 'ident) tactic
102 | Command of 'term command
105 | Do of int * ('term, 'ident) tactical
107 | Repeat of ('term, 'ident) tactical
108 | Seq of ('term, 'ident) tactical list (* sequential composition *)
109 | Then of ('term, 'ident) tactical * ('term, 'ident) tactical list
110 | Tries of ('term, 'ident) tactical list
111 (* try a sequence of tacticals until one succeeds, fail otherwise *)
112 | Try of ('term, 'ident) tactical (* try a tactical and mask failures *)