--- /dev/null
+(* Copyright (C) 2000, HELM Team.
+ *
+ * This file is part of HELM, an Hypertextual, Electronic
+ * Library of Mathematics, developed at the Computer Science
+ * Department, University of Bologna, Italy.
+ *
+ * HELM is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * HELM is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with HELM; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+ * MA 02111-1307, USA.
+ *
+ * For details, see the HELM World-Wide-Web page,
+ * http://www.cs.unibo.it/helm/.
+ *)
+
+(* AUTOR: Ferruccio Guidi <fguidi@cs.unibo.it>
+ *)
+
+{
+ open HxpParser
+}
+
+let SPC = [' ' '\t' '\n' '\r' '?' '!']+
+let ALPHA = ['A'-'Z' 'a'-'z']+
+let STR = '"'[^'"']*'"'
+let NUM = ['0'-'9' '.']+
+let BEF = [^ '=' '0'-'9' '.' ':' '*']*
+
+rule xml_token = parse
+ | SPC { xml_token lexbuf }
+ | '<' { OPEN }
+ | '>' { CLOSE }
+ | '=' { EQ }
+ | '/' { SL }
+ | ALPHA { NAME (Lexing.lexeme lexbuf) }
+ | STR { VAL (Lexing.lexeme lexbuf) }
+ | eof { DONE }
+
+and time_token = parse
+ | BEF { time_token lexbuf }
+ | NUM { DATA (float_of_string (Lexing.lexeme lexbuf)) }
+ | '=' { EQ }
+ | ':' { CLN }
+ | _ { DONE }
+ | eof { DONE }
+