/*

  Copyright (C) 2000, 2001 Silicon Graphics, Inc.  All Rights Reserved.

  This program is free software; you can redistribute it and/or modify it
  under the terms of version 2 of the GNU General Public License as
  published by the Free Software Foundation.

  This program is distributed in the hope that it would be useful, but
  WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  

  Further, this software is distributed without any warranty that it is
  free of the rightful claim of any third person regarding infringement 
  or the like.  Any license provided herein, whether implied or 
  otherwise, applies only to this software file.  Patent licenses, if 
  any, provided herein do not apply to combinations of this program with 
  other software, or any other product whatsoever.  

  You should have received a copy of the GNU General Public License along
  with this program; if not, write the Free Software Foundation, Inc., 59
  Temple Place - Suite 330, Boston MA 02111-1307, USA.

  Contact information:  Silicon Graphics, Inc., 1600 Amphitheatre Pky,
  Mountain View, CA 94043, or:

  http://www.sgi.com

  For further information regarding this notice, see:

  http://oss.sgi.com/projects/GenInfo/NoticeExplan

*/


#include "basic.h"

/*
 * option_seen keeps track of whether an option has been seen,
 * and the order in which options are seen. 
 */

extern void init_option_seen (void);	/* init the option_seen list */
extern void double_max_option_seen (void); /* double the size of the lists */

/* whether option flag was seen or not, includes implicitly seen */
extern boolean option_was_seen (int optflag);
/* whether option flag was implicitly seen */
extern boolean option_was_implicitly_seen (int optflag);

/* set option as seen */
extern void add_option_seen (int optflag);
/* set option as seen, put at beginning of order list */
extern void prepend_option_seen (int optflag);
/* set option as implicitly seen */
extern void add_option_implicitly_seen (int optflag);

/* replace old option seen with new value, but in same place */
extern void replace_option_seen (int old_optflag, int new_optflag);

/* set option as unseen */
extern void set_option_unseen (int optflag);

/*
 * iterator routines:
 */
#define FOREACH_OPTION_SEEN(i)	\
	for (i = first_option_seen(); more_option_seen(); i = next_option_seen())
	
extern int first_option_seen (void);
extern int next_option_seen (void);
extern boolean more_option_seen (void);

/* Warning:  the following two routines only work if inside an iterator */
/* return true if this option was repeated later */
extern boolean current_option_seen_later (int optflag);
/* set current option unseen */
extern void set_current_option_unseen (void);