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/*  This file is part of the program psim.

    Copyright (C) 1994-1996, Andrew Cagney <cagney@highland.com.au>

    This program 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.

    This program 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 this program; if not, write to the Free Software

    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

    */

/* NB, an empty filter is NULL */

typedef struct _filter filter;

/* parse the list merging any flags into the filter */

extern void filter_parse

(filter **filters,

 const char *filt);

/* add the second filter to the first */

extern void filter_add

(filter **filters,

 filter *add);

/* returns true if SUB is a strict subset of SUPER.  For an empty set

   is a member of any set */

extern int filter_is_subset

(filter *superset,

 filter *subset);

/* return true if there is at least one member common to the two

   filters */

extern int filter_is_common

(filter *l,

 filter *r);

/* returns the index (pos + 1) if the name is in the filter.  */

extern int filter_is_member

(filter *set,

 const char *flag);

/* returns true if one of the flags is not present in the filter.

   === !filter_is_subset (filter_parse (NULL, flags), filters) */

int is_filtered_out

(filter *filters,

 const char *flags);

/* returns the next member of the filter set that follows MEMBER.

   Member does not need to be an elememt of the filter set.  Next of

   "" is the first non-empty member */

char *filter_next

(filter *set,

 char *member);

/* for debugging */

extern void dump_filter

(lf *file,

 char *prefix,

 filter *filt,

 char *suffix);