aboutsummaryrefslogtreecommitdiff
path: root/usr.bin/m4/extern.h
blob: 57a0600b13487316236037cd54d97433cfc7b981 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
/*	$OpenBSD: extern.h,v 1.29 2002/02/16 21:27:48 millert 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. 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.
 *
 *	@(#)extern.h	8.1 (Berkeley) 6/6/93
 * $FreeBSD$
 */

/* eval.c */
extern void	eval(const char *[], 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 */
extern ndptr	addent(const char *);
extern unsigned	hash(const char *);
extern ndptr	lookup(const char *);
extern void	remhash(const char *, int);

/* main.c */
extern void outputstr(const char *);
extern int builtin_type(const char *);
extern const char *builtin_realname(int);
extern void emitline(void);

/* 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 void mark_traced(const char *, int);
extern int is_traced(const char *);
extern void trace_file(const char *);
extern ssize_t trace(const char **, int, struct input_file *);
extern void finish_trace(size_t);
extern int traced_macros;
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 char *inname[];		/* names of these input files */
extern int inlineno[];		/* current number in each input file */
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 const char *m4wraps;	/* m4wrap string default. */
extern const 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 synccpp;		/* Line synchronisation for C preprocessor */

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

/* get a possibly pushed-back-character, increment lineno if need be */
static __inline int gpbc(void)
{
	int chscratch;		/* Scratch space. */

	if (bp > bufbase) {
		if (*--bp) 
			return (*bp);
		else
			return (EOF);
	}
	chscratch = obtain_char(infile+ilevel);
	if (chscratch == '\n')
		++inlineno[ilevel];
	return (chscratch);
}