(* Copyright (C) 2004, HELM Team. * * This file is part of HELM, an Hypertextual, Electronic * Library of Mathematics, developed at the Computer Science * Department, University of Bologna, Italy. * * HELM is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * HELM is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with HELM; if not, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, * MA 02111-1307, USA. * * For details, see the HELM World-Wide-Web page, * http://helm.cs.unibo.it/ *) type direction = [ `Left | `Right ] type reduction_kind = [ `Reduce | `Simpl | `Whd ] type 'term pattern = Pattern of 'term (* when an 'ident option is None, the default is to apply the tactic to the current goal *) type ('term, 'ident) tactic = | LocatedTactic of CicAst.location * ('term, 'ident) tactic | Absurd | Apply of 'term | Assumption | Change of 'term * 'term * 'ident option (* what, with what, where *) | Change_pattern of 'term pattern * 'term * 'ident option (* what, with what, where *) | Contradiction | Cut of 'term | Decompose of 'ident * 'ident list (* where, which principles *) | Discriminate of 'ident | Elim of 'term * 'term option (* what to elim, which principle to use *) | ElimType of 'term | Exact of 'term | Exists | Fold of reduction_kind * 'term | Fourier | Injection of 'ident | Intros of int option * 'ident list | Left | LetIn of 'term * 'ident (* | Named_intros of 'ident list (* joined with Intros above *) *) | Reduce of reduction_kind * 'term pattern * 'ident option (* what, where *) | Reflexivity | Replace of 'term * 'term (* what, with what *) | Replace_pattern of 'term pattern * 'term | Rewrite of direction * 'term * 'ident option | Right | Ring | Split | Symmetry | Transitivity of 'term type thm_flavour = [ `Definition | `Fact | `Goal | `Lemma | `Remark | `Theorem ] type 'term command = | Abort | Check of 'term | Proof | Qed of string option (* name. * Name is needed when theorem was started without providing a name *) | Quit | Theorem of thm_flavour * string option * 'term * 'term option (* flavour, name, type, body * - name is absent when an unnamed theorem is being proved, tipically in * interactive usage * - body is present when its given along with the command, otherwise it * will be given in proof editing mode using the tactical language *) type ('term, 'ident) tactical = | LocatedTactical of CicAst.location * ('term, 'ident) tactical | Tactic of ('term, 'ident) tactic | Command of 'term command | Fail | Do of int * ('term, 'ident) tactical | IdTac | Repeat of ('term, 'ident) tactical | Seq of ('term, 'ident) tactical list (* sequential composition *) | Then of ('term, 'ident) tactical * ('term, 'ident) tactical list | Tries of ('term, 'ident) tactical list (* try a sequence of tacticals until one succeeds, fail otherwise *) | Try of ('term, 'ident) tactical (* try a tactical and mask failures *)