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secondo/Algebras/MTopRel/Scanner.l
2026-01-23 17:03:45 +08:00

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/*
----
This file is part of SECONDO.
Copyright (C) 2004, University in Hagen, Department of Computer Science,
Database Systems for New Applications.
SECONDO 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.
SECONDO 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 SECONDO; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
----
*/
%{
/*
1 The Scannerfile
*/
#include "RegExParser.y.h"
void mtoprel_lexDestroy(){
yy_delete_buffer(YY_CURRENT_BUFFER);
regexlex_destroy();
}
%}
%option prefix="regex"
%option noyywrap
whitespace [ \n\r\t\a\b\f\t\v]
int [0-9][0-9]*
stars "*"("*"|whitespace)*
epsilon "e"
%%
{whitespace} { ; }
"(" { return OPEN; }
")" { return CLOSE; }
{stars} { return STARS; }
"|" { return OR; }
{epsilon} { return EPSILON;}
{int} { regexlval.numval = atoi(yytext);
return NUMBER;
}
. { return ERROR; }
%%