[bison.git] / src / nullable.h

/* Part of the bison parser generator,
   Copyright 2000 Free Software Foundation, Inc.

   This file is part of Bison, the GNU Compiler Compiler.

   Bison 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, or (at your option)
   any later version.

   Bison 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 Bison; see the file COPYING.  If not, write to
   the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
   Boston, MA 02111-1307, USA.  */

#ifndef NULLABLE_H_
# define NULLABLE_H_

/* A vector saying which nonterminals can expand into the null string.
   NULLABLE[I - NTOKENS] is nonzero if symbol I can do so.  */
extern char *nullable;

/* Set up NULLABLE. */
extern void set_nullable PARAMS((void));

/* Free NULLABLE. */
extern void free_nullable PARAMS((void));
#endif /* !NULLABLE_H_ */
Commit	Line	Data
3519ec76	1	/* Part of the bison parser generator,
aa7815f5	2	Copyright 2000 Free Software Foundation, Inc.
3519ec76 AD	3
	4	This file is part of Bison, the GNU Compiler Compiler.
	5
	6	Bison is free software; you can redistribute it and/or modify
	7	it under the terms of the GNU General Public License as published by
	8	the Free Software Foundation; either version 2, or (at your option)
	9	any later version.
	10
	11	Bison is distributed in the hope that it will be useful,
	12	but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	GNU General Public License for more details.
	15
	16	You should have received a copy of the GNU General Public License
	17	along with Bison; see the file COPYING. If not, write to
	18	the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
	19	Boston, MA 02111-1307, USA. */
	20
	21	#ifndef NULLABLE_H_
	22	# define NULLABLE_H_
	23
	24	/* A vector saying which nonterminals can expand into the null string.
	25	NULLABLE[I - NTOKENS] is nonzero if symbol I can do so. */
	26	extern char *nullable;
	27
	28	/* Set up NULLABLE. */
	29	extern void set_nullable PARAMS((void));
	30
	31	/* Free NULLABLE. */
	32	extern void free_nullable PARAMS((void));
	33	#endif /* !NULLABLE_H_ */