Return to mdef.h CVS log

Up to [local] / src / usr.bin / m4

Style: kill register and indent properly.
Let indx match netbsd flavor, to simplify diffs.
Show how many quotes were not closed.
Increase stack slightly, now that we're no longer bound by argspace.

/*	$OpenBSD: mdef.h,v 1.7 1999/09/14 08:35:17 espie Exp $	*/
/*	$NetBSD: mdef.h,v 1.7 1996/01/13 23:25:27 pk Exp $	*/

/*
 * Copyright (c) 1989, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Ozan Yigit at York University.
 *
 * 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.
 * 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. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. 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 BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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.
 *
 *	@(#)mdef.h	8.1 (Berkeley) 6/6/93
 */

#define MACRTYPE        1
#define DEFITYPE        2
#define EXPRTYPE        3
#define SUBSTYPE        4
#define IFELTYPE        5
#define LENGTYPE        6
#define CHNQTYPE        7
#define SYSCTYPE        8
#define UNDFTYPE        9
#define INCLTYPE        10
#define SINCTYPE        11
#define PASTTYPE        12
#define SPASTYPE        13
#define INCRTYPE        14
#define IFDFTYPE        15
#define PUSDTYPE        16
#define POPDTYPE        17
#define SHIFTYPE        18
#define DECRTYPE        19
#define DIVRTYPE        20
#define UNDVTYPE        21
#define DIVNTYPE        22
#define MKTMTYPE        23
#define ERRPTYPE        24
#define M4WRTYPE        25
#define TRNLTYPE        26
#define DNLNTYPE        27
#define DUMPTYPE        28
#define CHNCTYPE        29
#define INDXTYPE        30
#define SYSVTYPE        31
#define EXITTYPE        32
#define DEFNTYPE        33
 
#define STATIC          128

/*
 * m4 special characters
 */
 
#define ARGFLAG         '$'
#define LPAREN          '('
#define RPAREN          ')'
#define LQUOTE          '`'
#define RQUOTE          '\''
#define COMMA           ','
#define SCOMMT          '#'
#define ECOMMT          '\n'

#ifdef msdos
#define system(str)	(-1)
#endif

/*
 * other important constants
 */

#define EOS             '\0'
#define MAXINP          10              /* maximum include files   	    */
#define MAXOUT          10              /* maximum # of diversions 	    */
#define MAXSTR          512             /* maximum size of string  	    */
#define BUFSIZE         4096            /* starting size of pushback buffer */
#define STACKMAX        4096            /* size of call stack      	    */
#define STRSPMAX        4096            /* starting size of string space    */
#define MAXTOK          MAXSTR          /* maximum chars in a tokn 	    */
#define HASHSIZE        199             /* maximum size of hashtab 	    */
#define MAXCCHARS	5		/* max size of comment/quote delim  */
 
#define ALL             1
#define TOP             0
 
#define TRUE            1
#define FALSE           0
#define cycle           for(;;)

/*
 * m4 data structures
 */
 
typedef struct ndblock *ndptr;
 
struct ndblock {                /* hastable structure         */
        char    *name;          /* entry name..               */
        char    *defn;          /* definition..               */
        int     type;           /* type of the entry..        */
        ndptr   nxtptr;         /* link to next entry..       */
};
 
#define nil     ((ndptr) 0)
 
struct keyblk {
        char    *knam;          /* keyword name */
        int     ktyp;           /* keyword type */
};

typedef union {			/* stack structure */
	int	sfra;		/* frame entry  */
	char 	*sstr;		/* string entry */
} stae;

typedef short pbent;		/* pushback entry; needs to hold chars + EOF */

/*
 * macros for readibility and/or speed
 *
 *      gpbc()  - get a possibly pushed-back character
 *      pushf() - push a call frame entry onto stack
 *      pushs() - push a string pointer onto stack
 */
#define gpbc() 	 (bp > bufbase) ? *--bp : getc(infile[ilevel])
#define pushf(x) if (sp < STACKMAX) mstack[++sp].sfra = (x)
#define pushs(x) if (sp < STACKMAX) mstack[++sp].sstr = (x)

/*
 *	    .				   .
 *	|   .	|  <-- sp		|  .  |
 *	+-------+			+-----+
 *	| arg 3 ----------------------->| str |
 *	+-------+			|  .  |
 *	| arg 2 ---PREVEP-----+ 	   .
 *	+-------+	      |
 *	    .		      |		|     |
 *	+-------+	      | 	+-----+
 *	| plev	|  PARLEV     +-------->| str |
 *	+-------+			|  .  |
 *	| type	|  CALTYP		   .
 *	+-------+
 *	| prcf	---PREVFP--+
 *	+-------+  	   |
 *	|   .	|  PREVSP  |
 *	    .	   	   |
 *	+-------+	   |
 *	|	<----------+
 *	+-------+
 *
 */
#define PARLEV  (mstack[fp].sfra)
#define CALTYP  (mstack[fp-1].sfra)
#define PREVEP	compute_prevep() 
#define PREVSP	(fp-3)
#define PREVFP	(mstack[fp-2].sfra)