/* hash.h - for hash.c
   Copyright (C) 1987 Free Software Foundation, Inc.
   
   This file is part of GAS, the GNU Assembler.
   
   GAS 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.
   
   GAS 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 GAS; see the file COPYING.  If not, write to
   the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */

#ifndef hashH
#define hashH

struct hash_entry
{
	char *      hash_string;	/* points to where the symbol string is */
	/* NULL means slot is not used */
	/* DELETED means slot was deleted */
	char *      hash_value;	/* user's datum, associated with symbol */
};


#define HASH_STATLENGTH	(6)
struct hash_control
{
	struct hash_entry * hash_where; /* address of hash table */
	int         hash_sizelog;	/* Log of ( hash_mask + 1 ) */
	int         hash_mask;	/* masks a hash into index into table */
	int         hash_full;	/* when hash_stat[STAT_USED] exceeds this, */
	/* grow table */
	struct hash_entry * hash_wall; /* point just after last (usable) entry */
	/* here we have some statistics */
	int hash_stat[HASH_STATLENGTH]; /* lies & statistics */
	/* we need STAT_USED & STAT_SIZE */
};


/*						returns		  */
struct hash_control *	hash_new();	/* [control block]	  */
void			hash_die();
void			hash_say();
char *			hash_delete();	/* previous value         */
char *			hash_relpace();	/* previous value         */
char *			hash_insert();	/* error string           */
char *			hash_apply();	/* 0 means OK             */
char *			hash_find();	/* value                  */
char *			hash_jam();	/* error text (internal)  */
#endif				/* #ifdef hashH */

/* end of hash.c */