m4: Sync with FreeBSD.
[dragonfly.git] / usr.bin / m4 / extern.h
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4afad3d8 1/* $OpenBSD: extern.h,v 1.51 2011/09/27 07:24:02 espie Exp $ */
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2/* $NetBSD: extern.h,v 1.3 1996/01/13 23:25:24 pk Exp $ */
3
4/*-
5 * Copyright (c) 1991, 1993
6 * The Regents of the University of California. All rights reserved.
7 *
8 * This code is derived from software contributed to Berkeley by
9 * Ozan Yigit at York University.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
4afad3d8 19 * 3. Neither the name of the University nor the names of its contributors
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20 * may be used to endorse or promote products derived from this software
21 * without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 *
35 * @(#)extern.h 8.1 (Berkeley) 6/6/93
4afad3d8 36 * $FreeBSD: src/usr.bin/m4/extern.h,v 1.17 2012/11/17 01:54:24 svnexp Exp $
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37 */
38
39/* eval.c */
4afad3d8 40extern void eval(const char *[], int, int, int);
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41extern void dodefine(const char *, const char *);
42extern unsigned long expansion_id;
43
44/* expr.c */
45extern int expr(const char *);
4afad3d8 46extern int32_t end_result;
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47
48/* gnum4.c */
4afad3d8 49extern void addtoincludepath(const char *);
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50extern struct input_file *fopen_trypath(struct input_file *, const char *);
51extern void doindir(const char *[], int);
52extern void dobuiltin(const char *[], int);
53extern void dopatsubst(const char *[], int);
54extern void doregexp(const char *[], int);
55
56extern void doprintlineno(struct input_file *);
57extern void doprintfilename(struct input_file *);
58
59extern void doesyscmd(const char *);
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60extern void getdivfile(const char *);
61extern void doformat(const char *[], int);
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62
63/* look.c */
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64
65#define FLAG_UNTRACED 0
66#define FLAG_TRACED 1
67#define FLAG_NO_TRACE 2
68
69extern void init_macros(void);
984263bc 70extern ndptr lookup(const char *);
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71extern void mark_traced(const char *, int);
72extern struct ohash macros;
73
74extern struct macro_definition *lookup_macro_definition(const char *);
75extern void macro_define(const char *, const char *);
76extern void macro_pushdef(const char *, const char *);
77extern void macro_popdef(const char *);
78extern void macro_undefine(const char *);
79extern void setup_builtin(const char *, unsigned int);
80extern void macro_for_all(void (*)(const char *, struct macro_definition *));
81#define macro_getdef(p) ((p)->d)
82#define macro_name(p) ((p)->name)
83#define macro_builtin_type(p) ((p)->builtin_type)
84#define is_traced(p) ((p)->trace_flags == FLAG_NO_TRACE ? (trace_flags & TRACE_ALL) : (p)->trace_flags)
85
86extern ndptr macro_getbuiltin(const char *);
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87
88/* main.c */
89extern void outputstr(const char *);
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90extern void do_emit_synchline(void);
91extern int exit_code;
92#define emit_synchline() do { if (synch_lines) do_emit_synchline(); } while(0)
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93
94/* misc.c */
95extern void chrsave(int);
4afad3d8 96extern char *compute_prevep(void);
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97extern void getdiv(int);
98extern ptrdiff_t indx(const char *, const char *);
4afad3d8 99extern void initspaces(void);
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100extern void killdiv(void);
101extern void onintr(int);
102extern void pbnum(int);
4afad3d8 103extern void pbnumbase(int, int, int);
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104extern void pbunsigned(unsigned long);
105extern void pbstr(const char *);
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106extern void pushback(int);
107extern void *xalloc(size_t, const char *fmt, ...);
108extern void *xrealloc(void *, size_t, const char *fmt, ...);
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109extern char *xstrdup(const char *);
110extern void usage(void);
111extern void resizedivs(int);
112extern size_t buffer_mark(void);
113extern void dump_buffer(FILE *, size_t);
4afad3d8 114extern void m4errx(int, const char *, ...);
984263bc 115
4afad3d8 116extern int obtain_char(struct input_file *);
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117extern void set_input(struct input_file *, FILE *, const char *);
118extern void release_input(struct input_file *);
119
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120/* speeded-up versions of chrsave/pushback */
121#define PUSHBACK(c) \
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122 do { \
123 if (bp >= endpbb) \
124 enlarge_bufspace(); \
125 *bp++ = (c); \
126 } while(0)
10c3f15b 127
4afad3d8 128#define CHRSAVE(c) \
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129 do { \
130 if (ep >= endest) \
131 enlarge_strspace(); \
132 *ep++ = (c); \
133 } while(0)
134
135/* and corresponding exposure for local symbols */
136extern void enlarge_bufspace(void);
137extern void enlarge_strspace(void);
4afad3d8 138extern unsigned char *endpbb;
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139extern char *endest;
140
141/* trace.c */
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142extern unsigned int trace_flags;
143#define TRACE_ALL 512
984263bc 144extern void trace_file(const char *);
4afad3d8 145extern size_t trace(const char **, int, struct input_file *);
984263bc 146extern void finish_trace(size_t);
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147extern void set_trace_flags(const char *);
148extern FILE *traceout;
149
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150extern stae *mstack; /* stack of m4 machine */
151extern char *sstack; /* shadow stack, for string space extension */
152extern FILE *active; /* active output file pointer */
153extern struct input_file infile[];/* input file stack (0=stdin) */
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154extern FILE **outfile; /* diversion array(0=bitbucket) */
155extern int maxout; /* maximum number of diversions */
4afad3d8 156extern int fp; /* m4 call frame pointer */
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157extern int ilevel; /* input file stack pointer */
158extern int oindex; /* diversion index. */
159extern int sp; /* current m4 stack pointer */
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160extern unsigned char *bp; /* first available character */
161extern unsigned char *buf; /* push-back buffer */
162extern unsigned char *bufbase; /* buffer base for this ilevel */
163extern unsigned char *bbase[]; /* buffer base per ilevel */
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164extern char ecommt[MAXCCHARS+1];/* end character for comment */
165extern char *ep; /* first free char in strspace */
166extern char lquote[MAXCCHARS+1];/* left quote character (`) */
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167extern char **m4wraps; /* m4wrap string default. */
168extern int maxwraps; /* size of m4wraps array */
169extern int wrapindex; /* current index in m4wraps */
170
171extern const char *null; /* as it says.. just a null. */
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172extern char rquote[MAXCCHARS+1];/* right quote character (') */
173extern char scommt[MAXCCHARS+1];/* start character for comment */
4afad3d8 174extern int synch_lines; /* line synchronisation directives */
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175
176extern int mimic_gnu; /* behaves like gnu-m4 */
4afad3d8 177extern int prefix_builtins; /* prefix builtin macros with m4_ */