1/* $OpenBSD: extern.h,v 1.49 2009/10/14 17:19:47 sthen Exp $ */ 2/* $NetBSD: extern.h,v 1.20 2020/06/25 02:25:53 uwe 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. 19 * 3. Neither the name of the University nor the names of its contributors 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 36 */ 37 38/* eval.c */ 39extern void eval(const char *[], int, int, int); 40extern void dodefine(const char *, const char *); 41extern unsigned long expansion_id; 42 43/* expr.c */ 44extern int expr(const char *); 45 46/* gnum4.c */ 47extern void addtoincludepath(const char *); 48extern struct input_file *fopen_trypath(struct input_file *, const char *); 49extern void doindir(const char *[], int); 50extern void dobuiltin(const char *[], int); 51extern void dopatsubst(const char *[], int); 52extern void doregexp(const char *[], int); 53 54extern void doprintlineno(struct input_file *); 55extern void doprintfilename(struct input_file *); 56 57extern void doesyscmd(const char *); 58extern void getdivfile(const char *); 59extern void doformat(const char *[], int); 60#ifdef REAL_FREEZE 61extern void freeze_state(const char *); 62extern void thaw_state(const char *); 63#endif 64 65 66/* look.c */ 67 68#define FLAG_UNTRACED 0 69#define FLAG_TRACED 1 70#define FLAG_NO_TRACE 2 71 72extern void init_macros(void); 73extern ndptr lookup(const char *); 74extern void mark_traced(const char *, int); 75extern struct ohash macros; 76 77extern struct macro_definition *lookup_macro_definition(const char *); 78extern void macro_define(const char *, const char *); 79extern void macro_pushdef(const char *, const char *); 80extern void macro_popdef(const char *); 81extern void macro_undefine(const char *); 82extern void setup_builtin(const char *, unsigned int); 83extern void macro_for_all(void (*)(const char *, struct macro_definition *)); 84#define macro_getdef(p) ((p)->d) 85#define macro_name(p) ((p)->name) 86#define macro_builtin_type(p) ((p)->builtin_type) 87#define is_traced(p) ((p)->trace_flags == FLAG_NO_TRACE ? (trace_flags & TRACE_ALL) : (p)->trace_flags) 88 89extern ndptr macro_getbuiltin(const char *); 90#ifdef REAL_FREEZE 91extern void dump_state(FILE *); 92extern void restore_state(FILE *); 93#endif 94 95/* main.c */ 96extern void outputstr(const char *); 97extern void do_emit_synchline(void); 98#define emit_synchline() do { if (synch_lines) do_emit_synchline(); } while(0) 99 100/* misc.c */ 101extern void chrsave(int); 102extern char *compute_prevep(void); 103extern void getdiv(int); 104extern ptrdiff_t indx(const char *, const char *); 105extern void initspaces(void); 106extern void killdiv(void); 107extern void pbnum(int); 108extern void pbnumbase(int, int, int); 109extern void pbunsigned(unsigned long); 110extern void pbstr(const char *); 111extern void pushback(int); 112extern void *xalloc(size_t, const char *fmt, ...) __printflike(2, 3); 113extern void *xrealloc(void *, size_t, const char *fmt, ...) 114 __printflike(3, 4); 115extern char *xstrdup(const char *); 116extern void resizedivs(int); 117extern size_t buffer_mark(void); 118extern void dump_buffer(FILE *, size_t); 119extern void __dead m4errx(int, const char *, ...) __printflike(2, 3); 120 121extern int obtain_char(struct input_file *); 122extern void set_input(struct input_file *, FILE *, const char *); 123extern void release_input(struct input_file *); 124 125/* speeded-up versions of chrsave/pushback */ 126#define PUSHBACK(c) \ 127 do { \ 128 if (bp >= endpbb) \ 129 enlarge_bufspace(); \ 130 *bp++ = (c); \ 131 } while(0) 132 133#define CHRSAVE(c) \ 134 do { \ 135 if (ep >= endest) \ 136 enlarge_strspace(); \ 137 *ep++ = (c); \ 138 } while(0) 139 140/* and corresponding exposure for local symbols */ 141extern void enlarge_bufspace(void); 142extern void enlarge_strspace(void); 143extern unsigned char *endpbb; 144extern char *endest; 145 146/* trace.c */ 147extern unsigned int trace_flags; 148#define TRACE_ALL 512 149extern int trace_file(const char *); 150extern size_t trace(const char **, int, struct input_file *); 151extern void finish_trace(size_t); 152extern void set_trace_flags(const char *); 153extern FILE *traceout; 154 155extern ndptr hashtab[]; /* hash table for macros etc. */ 156extern stae *mstack; /* stack of m4 machine */ 157extern char *sstack; /* shadow stack, for string space extension */ 158extern FILE *active; /* active output file pointer */ 159extern struct input_file infile[];/* input file stack (0=stdin) */ 160extern FILE **outfile; /* diversion array(0=bitbucket) */ 161extern int maxout; /* maximum number of diversions */ 162extern int fp; /* m4 call frame pointer */ 163extern int ilevel; /* input file stack pointer */ 164extern int oindex; /* diversion index. */ 165extern int sp; /* current m4 stack pointer */ 166extern unsigned char *bp; /* first available character */ 167extern unsigned char *buf; /* push-back buffer */ 168extern unsigned char *bufbase; /* buffer base for this ilevel */ 169extern unsigned char *bbase[]; /* buffer base per ilevel */ 170extern char ecommt[MAXCCHARS+1];/* end character for comment */ 171extern char *ep; /* first free char in strspace */ 172extern char lquote[MAXCCHARS+1];/* left quote character (`) */ 173extern char **m4wraps; /* m4wrap string default. */ 174extern int maxwraps; /* size of m4wraps array */ 175extern int wrapindex; /* current index in m4wraps */ 176extern int fatal_warnings; /* exit on warning */ 177extern int quiet; /* no warnings */ 178extern int nesting_limit; /* macro expansion nesting limit */ 179#ifndef REAL_FREEZE 180extern FILE *freezef; /* copy of input */ 181extern int thawing; /* don't process includes during thaw */ 182#endif 183 184extern const char *null; /* as it says.. just a null. */ 185extern char rquote[MAXCCHARS+1];/* right quote character (') */ 186extern char scommt[MAXCCHARS+1];/* start character for comment */ 187extern int synch_lines; /* line synchronisation directives */ 188 189extern int mimic_gnu; /* behaves like gnu-m4 */ 190extern int prefix_builtins; /* prefix builtin macros with m4_ */ 191