1 (* Copyright (C) 2000, 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://cs.unibo.it/helm/.
28 type qid = id * id list (* qualified identifier: name, qualifiers *)
30 type term = Sort of bool (* sorts: true = TYPE, false = PROP *)
31 | LRef of int (* local reference: de bruijn index *)
32 | GRef of int * qid * term list (* global reference: context length, name, arguments *)
33 | Appl of term * term (* application: argument, function *)
34 | Abst of id * term * term (* abstraction: name, type, body *)
36 type pars = (qid * term) list (* parameter declarations: name, type *)
38 (* entry: line number, parameters, name, type, (transparent?, body) *)
39 type entry = int * pars * qid * term * (bool * term) option
41 type item = entry option