Return to extern.h CVS log

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

Fold trace status into the single hash table that's left.
Inline some macros/functions for speed.
So, this achieves the goal of one single lookup for macro/trace status,
which does speed up m4 in partial tracing situations somewhat.
This does also speed up m4 in large pushdef situations, since it no longer
has to lookup large chains of macros.

okay millert@

/*	$OpenBSD: extern.h,v 1.38 2003/06/30 22:13:32 espie Exp $	*/
/*	$NetBSD: extern.h,v 1.3 1996/01/13 23:25:24 pk Exp $	*/

/*-
 * Copyright (c) 1991, 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. 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.
 *
 *	@(#)extern.h	8.1 (Berkeley) 6/6/93
 */

/* eval.c */
extern void	eval(const char *[], int, int, int);
extern void	dodefine(const char *, const char *);
extern unsigned long expansion_id;

/* expr.c */
extern int	expr(const char *);

/* gnum4.c */
extern void 	addtoincludepath(const char *);
extern struct input_file *fopen_trypath(struct input_file *, const char *);
extern void doindir(const char *[], int);
extern void dobuiltin(const char *[], int);
extern void dopatsubst(const char *[], int);
extern void doregexp(const char *[], int);

extern void doprintlineno(struct input_file *);
extern void doprintfilename(struct input_file *);

extern void doesyscmd(const char *);
 

/* look.c */

#define FLAG_UNTRACED 0
#define FLAG_TRACED 1
#define FLAG_NO_TRACE 2

extern void	init_macros(void);
extern ndptr	lookup(const char *);
extern void mark_traced(const char *, int);
extern struct ohash macros;

extern struct macro_definition *lookup_macro_definition(const char *);
extern void 	macro_define(const char *, const char *);
extern void 	macro_pushdef(const char *, const char *);
extern void 	macro_popdef(const char *);
extern void 	macro_undefine(const char *);
extern void 	setup_builtin(const char *, unsigned int);
extern void 	macro_for_all(void (*)(const char *, struct macro_definition *));
#define macro_getdef(p) 	((p)->d)
#define macro_name(p)		((p)->name)
#define macro_builtin_type(p)	((p)->builtin_type)
#define is_traced(p) ((p)->trace_flags == FLAG_NO_TRACE ? (trace_flags & TRACE_ALL) : (p)->trace_flags)

extern ndptr macro_getbuiltin(const char *);

/* main.c */
extern void outputstr(const char *);
extern void do_emit_synchline(void);
#define emit_synchline() do { if (synch_lines) do_emit_synchline(); } while(0)

/* misc.c */
extern void	chrsave(int);
extern char 	*compute_prevep(void);
extern void	getdiv(int);
extern ptrdiff_t indx(const char *, const char *);
extern void 	initspaces(void);
extern void	killdiv(void);
extern void	onintr(int);
extern void	pbnum(int);
extern void	pbunsigned(unsigned long);
extern void	pbstr(const char *);
extern void	putback(int);
extern void	*xalloc(size_t);
extern char	*xstrdup(const char *);
extern void	usage(void);
extern void	resizedivs(int);
extern size_t	buffer_mark(void);
extern void	dump_buffer(FILE *, size_t);

extern int 	obtain_char(struct input_file *);
extern void	set_input(struct input_file *, FILE *, const char *);
extern void	release_input(struct input_file *);

/* speeded-up versions of chrsave/putback */
#define PUTBACK(c)				\
	do {					\
		if (bp >= endpbb)		\
			enlarge_bufspace();	\
		*bp++ = (c);			\
	} while(0)
	
#define CHRSAVE(c)				\
	do {					\
		if (ep >= endest)		\
			enlarge_strspace();	\
		*ep++ = (c);			\
	} while(0)

/* and corresponding exposure for local symbols */
extern void enlarge_bufspace(void);
extern void enlarge_strspace(void);
extern char *endpbb;
extern char *endest;

/* trace.c */
extern unsigned int trace_flags;
#define TRACE_ALL	512
extern void trace_file(const char *);
extern ssize_t trace(const char **, int, struct input_file *);
extern void finish_trace(size_t);
extern void set_trace_flags(const char *);
extern FILE *traceout;

extern ndptr hashtab[];		/* hash table for macros etc. */
extern stae *mstack;		/* stack of m4 machine */
extern char *sstack;		/* shadow stack, for string space extension */
extern FILE *active;		/* active output file pointer */
extern struct input_file infile[];/* input file stack (0=stdin) */
extern FILE **outfile;		/* diversion array(0=bitbucket) */
extern int maxout;		/* maximum number of diversions */
extern int fp; 			/* m4 call frame pointer */
extern int ilevel;		/* input file stack pointer */
extern int oindex;		/* diversion index. */
extern int sp;			/* current m4 stack pointer */
extern char *bp;		/* first available character */
extern char *buf;		/* push-back buffer */
extern char *bufbase;		/* buffer base for this ilevel */
extern char *bbase[];		/* buffer base per ilevel */
extern char ecommt[MAXCCHARS+1];/* end character for comment */
extern char *ep;		/* first free char in strspace */
extern char lquote[MAXCCHARS+1];/* left quote character (`) */
extern char *m4wraps;		/* m4wrap string default. */
extern char *null;		/* as it says.. just a null. */
extern char rquote[MAXCCHARS+1];/* right quote character (') */
extern char scommt[MAXCCHARS+1];/* start character for comment */
extern int  synch_lines;	/* line synchronisation directives */

extern int mimic_gnu;		/* behaves like gnu-m4 */