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
39 | Change of 'term * 'term * 'ident option (* what, with what, where *)
40 | Change_pattern of 'term pattern * 'term * 'ident option
41 (* what, with what, where *)
44 | Decompose of 'ident * 'ident list (* where, which principles *)
45 | Discriminate of 'ident
46 | Elim of 'term * 'term option (* what to elim, which principle to use *)
50 | Fold of reduction_kind * 'term
53 | Intros of int option * 'ident list
55 | LetIn of 'term * 'ident
56 (* | Named_intros of 'ident list (* joined with Intros above *) *)
57 | Reduce of reduction_kind * 'term pattern * 'ident option (* what, where *)
59 | Replace of 'term * 'term (* what, with what *)
60 | Replace_pattern of 'term pattern * 'term
61 | Rewrite of direction * 'term * 'ident option
66 | Transitivity of 'term
79 | Theorem of thm_flavour * string option * 'term * 'term option
80 (* flavour, name, type, body
81 * - name is absent when an unnamed theorem is being proved, tipically in
83 * - body is present when its given along with the command, otherwise it
84 * will be given in proof editing mode using the tactical language
86 | Qed of string option
88 * Name is needed when theorem was started without providing a name
92 type ('term, 'ident) tactical =
93 | LocatedTactical of CicAst.location * ('term, 'ident) tactical
95 | Tactic of ('term, 'ident) tactic
96 | Command of 'term command
99 | Do of int * ('term, 'ident) tactical
101 | Repeat of ('term, 'ident) tactical
102 | Seq of ('term, 'ident) tactical list (* sequential composition *)
103 | Then of ('term, 'ident) tactical * ('term, 'ident) tactical list
104 | Tries of ('term, 'ident) tactical list
105 (* try a sequence of tacticals until one succeeds, fail otherwise *)
106 | Try of ('term, 'ident) tactical (* try a tactical and mask failures *)