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/
27 let debug_print s = if debug then prerr_endline s
31 let expand_unicode_macro macro =
32 debug_print (Printf.sprintf "Expanding macro '%s' ..." macro);
33 let expansion = Macro.expand macro in
34 <:expr< $str:expansion$ >>
37 Quotation.add "unicode"
38 (Quotation.ExAst (expand_unicode_macro, (fun _ -> assert false)))
45 [ x = UIDENT; q = QUOTATION ->
46 let (quotation, arg) =
47 let pos = String.index q ':' in
49 String.sub q (pos + 1) (String.length q - pos - 1))
51 debug_print (Printf.sprintf "QUOTATION = %s; ARG = %s" quotation arg);
52 if quotation = "unicode" then
53 let text = TXtok (loc, x, expand_unicode_macro arg) in
54 {used = []; text = text; styp = STlid (loc, "string")}