/************************************************************************
 * grammer - include/parse.h
 * Copyright (C) 2002 Marcello Barnaba <vjt@openssl.it>
 *
 * 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 1, 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., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 * parser functions . . .
 */

#ifndef __PARSE_H__
#define __PARSE_H__

#include "struct.h"
#include "io.h"
#include "memory.h"
#include "manip.h"
#include <signal.h>
#include <stdio.h>

Grammar *acquire_grammar(void);
Part *acquire_part(char *, short);
List *acquire_list(char *, short);
Prod *acquire_prod(void);
void parser_sigint_handler(int);
Part *find_part(List *, Part *);


#define HEAD(var, head, type)	\
    			(var) = (head) = xmalloc(sizeof(type))
	
#define CUT(var, head)	(var)->next = NULL; \
    			(var) = (head); \
			(head) = (head)->next; \
			xfree((var))

#define NEW(var, type)	if(!(var)->next) \
			    (var)->next = xmalloc(sizeof(type))

#define ASSIGN(var, item, obj) \
    			(var)->next->item = (obj)

#define NEXT(var)	(var) = (var)->next

#define STATE_IDLE		0x0
#define STATE_SYMBOL		0x1
#define STATE_OR		0x2

#define FLAGS_NONE		0x0
#define FLAGS_ACQUIRE_DUPS	0x1
#define FLAGS_ACQUIRE_OR	0x2
    
#endif