/*
 * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
 * See the copyright notice in the ACK home directory, in the file "Copyright".
 */
/* $Header$ */
/* PREPROCESSOR: DEFINITION OF MACRO DESCRIPTOR */

/*	The flags of the mc_flag field of the macro structure. Note that
	these flags can be set simultaneously.
*/
#define NOFLAG		0		/* no special flags	*/
#define	FUNC		0x1		/* function attached    */
#define NOUNDEF		0x2		/* reserved macro	*/
#define NOREPLACE	0x4		/* prevent recursion	*/

#define	FORMALP 0200	/* mask for creating macro formal parameter	*/

/*	The macro descriptor is very simple, except the fact that the
	mc_text, which points to the replacement text, contains the
	non-ascii characters \201, \202, etc, indicating the position of a
	formal parameter in this text.
*/
struct macro	{
	struct macro *next;
	char *	mc_text;	/* the replacement text		*/
	int	mc_nps;		/* number of formal parameters	*/
	int	mc_length;	/* length of replacement text	*/
	char	mc_flag;	/* marking this macro		*/
};

/* ALLOCDEF "macro" 20 */

/* `token' numbers of keywords of command-line processor
*/
#define	K_UNKNOWN	0
#define	K_DEFINE	1
#define	K_ELIF		2
#define	K_ELSE		3
#define	K_ENDIF		4
#define	K_ERROR		5
#define	K_IF		6
#define	K_IFDEF		7
#define	K_IFNDEF	8
#define	K_INCLUDE	9
#define	K_LINE		10
#define	K_PRAGMA	11
#define	K_UNDEF		12