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/.
26 (* AUTOR: Ferruccio Guidi <fguidi@cs.unibo.it>
29 type arity_t = Const of int
33 type eval_spec = {eval : MathQL.query -> MathQL.result;
37 type text_out_spec = {out : string -> unit;
38 path : (string -> unit) -> MathQL.path -> unit;
39 query : (string -> unit) -> string -> MathQL.query -> unit;
40 result : (string -> unit) -> string -> MathQL.result -> unit
43 type text_in_spec = {result_in : Lexing.lexbuf -> MathQL.result}
45 val check_arity : MathQL.path -> int -> int -> unit
47 val eval : eval_spec -> text_out_spec -> text_in_spec ->
48 MathQL.path -> MathQL.path list -> MathQL.query list ->
51 val txt_out : text_out_spec ->
52 MathQL.path -> MathQL.path list -> MathQL.query list -> unit
54 exception ArityError of MathQL.path * arity_t * int
56 exception NameError of MathQL.path
58 exception NumberError of MathQL.result