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 location = int * int
28 type binder_kind = [ `Lambda | `Pi | `Exists | `Forall ]
29 type induction_kind = [ `Inductive | `CoInductive ]
30 type sort_kind = [ `Prop | `Set | `Type | `CProp ]
33 [ `Loc of location (* source file location *)
34 | `IdRef of string (* ACic pointer *)
38 | AttributedTerm of term_attribute * term
41 | Binder of binder_kind * capture_variable * term (* kind, name, body *)
42 | Case of term * string option * term option * (case_pattern * term) list
43 (* what to match, inductive type, out type, <pattern,action> list *)
44 | LetIn of capture_variable * term * term (* name, body, where *)
45 | LetRec of induction_kind * (capture_variable * term * int) list * term
46 (* (name, body, decreasing argument) list, where *)
47 | Ident of string * subst list option
48 (* literal, substitutions.
49 * Some [] -> user has given an empty explicit substitution list
50 * None -> user has given no explicit substitution list *)
52 | Meta of int * meta_subst list
53 | Num of string * int (* literal, instance *)
55 | Symbol of string * int (* canonical name, instance *)
57 and capture_variable = Cic.name * term option (* name, type *)
58 and meta_subst = term option
59 and subst = string * term
60 and case_pattern = string * capture_variable list