X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Fsoftware%2Flambda-delta%2Fautomath%2FautLexer.mll;h=b7009f9240011a28392d02c760c7a7b8dade963d;hb=7f89b4dce54266c281479a14c01edc4bd33993d1;hp=f0ae1ae92cda07b1697909f6d0f6cf5cfbeabdfe;hpb=9b4286fdc2d88b0d8018e5718ef055804f5cf7ac;p=helm.git

diff --git a/helm/software/lambda-delta/automath/autLexer.mll b/helm/software/lambda-delta/automath/autLexer.mll
index f0ae1ae92..b7009f924 100644
--- a/helm/software/lambda-delta/automath/autLexer.mll
+++ b/helm/software/lambda-delta/automath/autLexer.mll
@@ -1,33 +1,34 @@
-(* 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/.
- *)
+(*
+    ||M||  This file is part of HELM, an Hypertextual, Electronic        
+    ||A||  Library of Mathematics, developed at the Computer Science     
+    ||T||  Department, University of Bologna, Italy.                     
+    ||I||                                                                
+    ||T||  HELM is free software; you can redistribute it and/or         
+    ||A||  modify it under the terms of the GNU General Public License   
+    \   /  version 2 or (at your option) any later version.              
+     \ /   This software is distributed as is, NO WARRANTY.              
+      V_______________________________________________________________ *)
 
 { 
+   module L = Log
    module P = AutParser
    
    let debug = false
-   let out s = if debug then print_endline s else ()
+   let out s = if debug then L.warn s else ()
+
+   let unquote = ref false
+
+(* This turns an Automath identifier into an XML nmtoken *)
+   let quote id =
+      let l = String.length id in
+      let rec aux i =
+         if i < l then begin
+            if id.[i] = '\'' || id.[i] = '`' then id.[i] <- '_';
+	    aux (succ i)
+         end else
+	    id
+      in
+      aux 0
 }
 
 let LC  = ['#' '%']
@@ -41,13 +42,12 @@ rule line_comment = parse
    | NL  { () }
    | OC  { block_comment lexbuf; line_comment lexbuf }
    | _   { line_comment lexbuf }
-   | eof  { () } 
+   | eof { () } 
 and block_comment = parse
    | CC  { () }
    | OC  { block_comment lexbuf; block_comment lexbuf }
    | LC  { line_comment lexbuf; block_comment lexbuf  }
    | _   { block_comment lexbuf }
-   | eof { () } 
 and token = parse
    | SPC      { token lexbuf } 
    | LC       { line_comment lexbuf; token lexbuf  }
@@ -67,7 +67,10 @@ and token = parse
    | "'prop'" { out "PROP"; P.PROP   }
    | "TYPE"   { out "TYPE"; P.TYPE   }
    | "'type'" { out "TYPE"; P.TYPE   }
-   | ID       { out "ID"; P.IDENT (Lexing.lexeme lexbuf) }   
+   | ID       { out "ID"; 
+                   let s = Lexing.lexeme lexbuf in
+                   if !unquote then P.IDENT s else P.IDENT (quote s)
+              }
    | ":="     { out "DEF"; P.DEF     }
    | "("      { out "OP"; P.OP       }
    | ")"      { out "CP"; P.CP       }