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 | `Normalize ]
28 (* type 'term pattern = Pattern of 'term *)
30 (* everywhere includes goal and hypotheses *)
31 type 'term pattern = [ `Goal | `Everywhere ]
33 (* when an 'ident option is None, the default is to apply the tactic
34 to the current goal *)
36 type loc = CicAst.location
38 type ('term, 'ident) tactic =
39 | Absurd of loc * 'term
40 | Apply of loc * 'term
41 | Auto of loc * int option
43 | Change of loc * 'term * 'term * 'ident option (* what, with what, where *)
44 | Change_pattern of loc * 'term pattern * 'term * 'ident option
45 (* what, with what, where *)
46 | Contradiction of loc
48 | Decompose of loc * 'ident * 'ident list (* where, which principles *)
49 | Discriminate of loc * 'ident
50 | Elim of loc * 'term * 'term option (* what to elim, which principle to use *)
51 | ElimType of loc * 'term
52 | Exact of loc * 'term
54 | Fold of loc * reduction_kind * 'term
56 | Goal of loc * int (* change current goal, argument is goal number 1-based *)
57 | Injection of loc * 'ident
58 | Intros of loc * int option * 'ident list
60 | LetIn of loc * 'term * 'ident
61 (* | Named_intros of loc * 'ident list (* joined with Intros above *) *)
62 (* | Reduce of loc * reduction_kind * 'term pattern * 'ident option (* what, where *) *)
63 | ReduceAt of loc * reduction_kind * 'ident * 'term
64 | Reduce of loc * reduction_kind * ('term list * 'term pattern) option
65 (* kind, (what, where)
66 * if second argument is None, reduction is applied to the current goal,
67 * otherwise to each occurrence of loc * terms given in list occuring in term
70 | Replace of loc * 'term * 'term (* what, with what *)
71 | Replace_pattern of loc * 'term pattern * 'term
72 | Rewrite of loc * direction * 'term * 'ident option
77 | Transitivity of loc * 'term
87 (** <name, inductive/coinductive, type, constructor list>
88 * true means inductive, false coinductive *)
89 type 'term inductive_type = string * bool * 'term * (string * 'term) list
91 type search_kind = [ `Locate | `Hint | `Match | `Elim ]
93 type print_kind = [ `Env | `Coer ]
97 | WHint of loc * 'term
98 | WMatch of loc * 'term
99 | WInstance of loc * 'term
100 | WLocate of loc * string
101 | WElim of loc * 'term
104 | Print of loc * string
105 | Check of loc * 'term
108 (* | Redo of loc * int option
109 | Undo of loc * int option *)
110 (* | Print of loc * print_kind *)
111 | Search_pat of loc * search_kind * string (* searches with string pattern *)
112 | Search_term of loc * search_kind * 'term (* searches with term pattern *)
115 | Ident_alias of string * string (* identifier, uri *)
116 | Symbol_alias of string * int * string (* name, instance no, description *)
117 | Number_alias of int * string (* instance no, description *)
120 | Set of loc * string * string
123 * Name is needed when theorem was started without providing a name
125 | Inductive of loc * (string * 'term) list * 'term inductive_type list
126 (** parameters, list of loc * mutual inductive types *)
127 | Theorem of loc * thm_flavour * string option * 'term * 'term option
128 (** flavour, name, type, body
129 * - name is absent when an unnamed theorem is being proved, tipically in
131 * - body is present when its given along with the command, otherwise it
132 * will be given in proof editing mode using the tactical language
134 | Coercion of loc * 'term
135 | Alias of loc * alias_spec
137 type ('term, 'ident) tactical =
138 | Tactic of loc * ('term, 'ident) tactic
140 | Do of loc * int * ('term, 'ident) tactical
142 | Repeat of loc * ('term, 'ident) tactical
143 | Seq of loc * ('term, 'ident) tactical list (* sequential composition *)
144 | Then of loc * ('term, 'ident) tactical * ('term, 'ident) tactical list
145 | Tries of loc * ('term, 'ident) tactical list
146 (* try a sequence of loc * tacticals until one succeeds, fail otherwise *)
147 | Try of loc * ('term, 'ident) tactical (* try a tactical and mask failures *)
150 type ('term, 'ident) code =
151 | Command of loc * 'term command
152 | Macro of loc * 'term macro
153 (* Macro are substantially queries, but since we are not the kind of
154 * peolpe that like to push "start" to turn off the computer
155 * we added this command *)
156 | Tactical of loc * ('term, 'ident) tactical
158 type ('term, 'ident) comment =
159 | Note of loc * string
160 | Code of loc * ('term, 'ident) code
162 type ('term, 'ident) statement =
163 | Executable of loc * ('term, 'ident) code
164 | Comment of loc * ('term, 'ident) comment