symbol.h

/*	$Id: symbol.h,v 1.6 2002/01/18 18:23:39 nonaka Exp $	*/

/*
 * Copyright (c) 2001, 2002 NONAKA Kimihiro <aw9k-nnk@asahi-net.or.jp>
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer as
 *    the first lines of this file unmodified.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef	__SYMBOL_H__
#define	__SYMBOL_H__

#include "misc.h"

typedef struct symbol_tag {
	object_t	obj;

	int		type;
	char		*sym;
	union {
		void	*ptr;
		char	*str;
		long	val;
		int	(*func)(reg_t *, long);
	} u;
	struct symbol_tag *next;
} symbol_t;

enum alias_e {
	SYMBOL_NUMALIAS,
	SYMBOL_STRALIAS,
	SYMBOL_COMMAND,
	NUM_ALIAS
};

int symbol_add(object_t **, char *, void *, int);
void symbol_destroy(object_t *);
symbol_t *symbol_lookup(object_t *, char *);
void symbol_show(object_t *);

#endif /* __SYMBOL_H__ */