/* $OpenBSD: extern.h,v 1.49 2009/10/14 17:19:47 sthen Exp $ */
/* $NetBSD: extern.h,v 1.20 2020/06/25 02:25:53 uwe 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 *);
extern void getdivfile(const char *);
extern void doformat(const char *[], int);
#ifdef REAL_FREEZE
extern void freeze_state(const char *);
extern void thaw_state(const char *);
#endif
/* 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 *);
#ifdef REAL_FREEZE
extern void dump_state(FILE *);
extern void restore_state(FILE *);
#endif
/* 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 pbnum(int);
extern void pbnumbase(int, int, int);
extern void pbunsigned(unsigned long);
extern void pbstr(const char *);
extern void pushback(int);
extern void *xalloc(size_t, const char *fmt, ...) __printflike(2, 3);
extern void *xrealloc(void *, size_t, const char *fmt, ...)
__printflike(3, 4);
extern char *xstrdup(const char *);
extern void resizedivs(int);
extern size_t buffer_mark(void);
extern void dump_buffer(FILE *, size_t);
extern void __dead m4errx(int, const char *, ...) __printflike(2, 3);
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/pushback */
#define PUSHBACK(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 unsigned char *endpbb;
extern char *endest;
/* trace.c */
extern unsigned int trace_flags;
#define TRACE_ALL 512
extern int trace_file(const char *);
extern size_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 unsigned char *bp; /* first available character */
extern unsigned char *buf; /* push-back buffer */
extern unsigned char *bufbase; /* buffer base for this ilevel */
extern unsigned 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 int maxwraps; /* size of m4wraps array */
extern int wrapindex; /* current index in m4wraps */
extern int fatal_warnings; /* exit on warning */
extern int quiet; /* no warnings */
extern int nesting_limit; /* macro expansion nesting limit */
#ifndef REAL_FREEZE
extern FILE *freezef; /* copy of input */
extern int thawing; /* don't process includes during thaw */
#endif
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 synch_lines; /* line synchronisation directives */
extern int mimic_gnu; /* behaves like gnu-m4 */
extern int prefix_builtins; /* prefix builtin macros with m4_ */