* identifiers can now also have digits in them

[helm.git] / helm / ocaml / cic_textual_parser / cicTextualLexer.mll

diff --git a/helm/ocaml/cic_textual_parser/cicTextualLexer.mll b/helm/ocaml/cic_textual_parser/cicTextualLexer.mll
index d35a466952206dfc9f6374a25111f5f1b1a42836..107ff356ff9ed02be71bf55db8e17b9ae2702f1d 100644 (file)
--- a/helm/ocaml/cic_textual_parser/cicTextualLexer.mll
+++ b/helm/ocaml/cic_textual_parser/cicTextualLexer.mll
@@ -1,3 +1,28 @@
+(* 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://cs.unibo.it/helm/.
+ *)
+
 {
  open CicTextualParser;;
  module L = Lexing;;
@@ -24,7 +49,8 @@
  ;;
 }
 let num = ['1'-'9']['0'-'9']* | '0'
-let ident = ['A'-'Z' 'a'-'z' '_' '-']*
+let alfa = ['A'-'Z' 'a'-'z' '_' '-']
+let ident = alfa (alfa | num)*
 let baseuri = '/'(ident '/')* ident '.'
 let conuri = baseuri ("con" | "var")
 let indtyuri = baseuri "ind#1/" num
@@ -58,5 +84,6 @@ rule token =
   | '!'         { PROD }
   | ':'         { COLON }
   | '.'         { DOT }
+  | "->"        { ARROW }
   | eof         { EOF }
 {}