/*
 * Copyright (c) 1988, 1989, 1990 The Regents of the University of California.
 * Copyright (c) 1988, 1989 by Adam de Boor
 * Copyright (c) 1989 by Berkeley Softworks
 * All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Adam de Boor.
 *
 * Redistribution and use in source and binary forms are permitted
 * provided that: (1) source distributions retain this entire copyright
 * notice and comment, and (2) distributions including binaries display
 * the following acknowledgement:  ``This product includes software
 * developed by the University of California, Berkeley and its contributors''
 * in the documentation or other materials provided with the distribution
 * and in all advertising materials mentioning features or use of this
 * software. Neither the name of the University nor the names of its
 * contributors may be used to endorse or promote products derived
 * from this software without specific prior written permission.
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 *
 *	@(#)sprite.h	5.3 (Berkeley) 6/1/90
 */

/*
 * sprite.h --
 *
 * Common constants and type declarations for Sprite.
 */

#ifndef _SPRITE
#define _SPRITE


/*
 * A boolean type is defined as an integer, not an enum. This allows a
 * boolean argument to be an expression that isn't strictly 0 or 1 valued.
 */

typedef int Boolean;

#ifndef TRUE
#define TRUE	1
#endif TRUE
#ifndef FALSE
#define FALSE	0
#endif FALSE

/*
 * Functions that must return a status can return a ReturnStatus to
 * indicate success or type of failure.
 */

typedef int  ReturnStatus;

/*
 * The following statuses overlap with the first 2 generic statuses 
 * defined in status.h:
 *
 * SUCCESS			There was no error.
 * FAILURE			There was a general error.
 */

#define	SUCCESS			0x00000000
#define	FAILURE			0x00000001


/*
 * A nil pointer must be something that will cause an exception if 
 * referenced.  There are two nils: the kernels nil and the nil used
 * by user processes.
 */

#define NIL 		0xFFFFFFFF
#define USER_NIL 	0
#ifndef NULL
#define NULL	 	0
#endif NULL

/*
 * An address is just a pointer in C.  It is defined as a character pointer
 * so that address arithmetic will work properly, a byte at a time.
 */

typedef char *Address;

/*
 * ClientData is an uninterpreted word.  It is defined as an int so that
 * kdbx will not interpret client data as a string.  Unlike an "Address",
 * client data will generally not be used in arithmetic.
 */

typedef int *ClientData;

#ifdef notdef
#include "status.h"
#endif

#endif _SPRITE
