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 */ 39 extern void eval(const char *[], int, int, int); 40 extern void dodefine(const char *, const char *); 41 extern unsigned long expansion_id; 42 43 /* expr.c */ 44 extern int expr(const char *); 45 46 /* gnum4.c */ 47 extern void addtoincludepath(const char *); 48 extern struct input_file *fopen_trypath(struct input_file *, const char *); 49 extern void doindir(const char *[], int); 50 extern void dobuiltin(const char *[], int); 51 extern void dopatsubst(const char *[], int); 52 extern void doregexp(const char *[], int); 53 54 extern void doprintlineno(struct input_file *); 55 extern void doprintfilename(struct input_file *); 56 57 extern void doesyscmd(const char *); 58 extern void getdivfile(const char *); 59 extern void doformat(const char *[], int); 60 #ifdef REAL_FREEZE 61 extern void freeze_state(const char *); 62 extern 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 72 extern void init_macros(void); 73 extern ndptr lookup(const char *); 74 extern void mark_traced(const char *, int); 75 extern struct ohash macros; 76 77 extern struct macro_definition *lookup_macro_definition(const char *); 78 extern void macro_define(const char *, const char *); 79 extern void macro_pushdef(const char *, const char *); 80 extern void macro_popdef(const char *); 81 extern void macro_undefine(const char *); 82 extern void setup_builtin(const char *, unsigned int); 83 extern 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 89 extern ndptr macro_getbuiltin(const char *); 90 #ifdef REAL_FREEZE 91 extern void dump_state(FILE *); 92 extern void restore_state(FILE *); 93 #endif 94 95 /* main.c */ 96 extern void outputstr(const char *); 97 extern void do_emit_synchline(void); 98 #define emit_synchline() do { if (synch_lines) do_emit_synchline(); } while(0) 99 100 /* misc.c */ 101 extern void chrsave(int); 102 extern char *compute_prevep(void); 103 extern void getdiv(int); 104 extern ptrdiff_t indx(const char *, const char *); 105 extern void initspaces(void); 106 extern void killdiv(void); 107 extern void pbnum(int); 108 extern void pbnumbase(int, int, int); 109 extern void pbunsigned(unsigned long); 110 extern void pbstr(const char *); 111 extern void pushback(int); 112 extern void *xalloc(size_t, const char *fmt, ...) __printflike(2, 3); 113 extern void *xrealloc(void *, size_t, const char *fmt, ...) 114 __printflike(3, 4); 115 extern char *xstrdup(const char *); 116 extern void resizedivs(int); 117 extern size_t buffer_mark(void); 118 extern void dump_buffer(FILE *, size_t); 119 extern void __dead m4errx(int, const char *, ...) __printflike(2, 3); 120 121 extern int obtain_char(struct input_file *); 122 extern void set_input(struct input_file *, FILE *, const char *); 123 extern 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 */ 141 extern void enlarge_bufspace(void); 142 extern void enlarge_strspace(void); 143 extern unsigned char *endpbb; 144 extern char *endest; 145 146 /* trace.c */ 147 extern unsigned int trace_flags; 148 #define TRACE_ALL 512 149 extern int trace_file(const char *); 150 extern size_t trace(const char **, int, struct input_file *); 151 extern void finish_trace(size_t); 152 extern void set_trace_flags(const char *); 153 extern FILE *traceout; 154 155 extern ndptr hashtab[]; /* hash table for macros etc. */ 156 extern stae *mstack; /* stack of m4 machine */ 157 extern char *sstack; /* shadow stack, for string space extension */ 158 extern FILE *active; /* active output file pointer */ 159 extern struct input_file infile[];/* input file stack (0=stdin) */ 160 extern FILE **outfile; /* diversion array(0=bitbucket) */ 161 extern int maxout; /* maximum number of diversions */ 162 extern int fp; /* m4 call frame pointer */ 163 extern int ilevel; /* input file stack pointer */ 164 extern int oindex; /* diversion index. */ 165 extern int sp; /* current m4 stack pointer */ 166 extern unsigned char *bp; /* first available character */ 167 extern unsigned char *buf; /* push-back buffer */ 168 extern unsigned char *bufbase; /* buffer base for this ilevel */ 169 extern unsigned char *bbase[]; /* buffer base per ilevel */ 170 extern char ecommt[MAXCCHARS+1];/* end character for comment */ 171 extern char *ep; /* first free char in strspace */ 172 extern char lquote[MAXCCHARS+1];/* left quote character (`) */ 173 extern char **m4wraps; /* m4wrap string default. */ 174 extern int maxwraps; /* size of m4wraps array */ 175 extern int wrapindex; /* current index in m4wraps */ 176 extern int fatal_warnings; /* exit on warning */ 177 extern int quiet; /* no warnings */ 178 extern int nesting_limit; /* macro expansion nesting limit */ 179 #ifndef REAL_FREEZE 180 extern FILE *freezef; /* copy of input */ 181 extern int thawing; /* don't process includes during thaw */ 182 #endif 183 184 extern const char *null; /* as it says.. just a null. */ 185 extern char rquote[MAXCCHARS+1];/* right quote character (') */ 186 extern char scommt[MAXCCHARS+1];/* start character for comment */ 187 extern int synch_lines; /* line synchronisation directives */ 188 189 extern int mimic_gnu; /* behaves like gnu-m4 */ 190 extern int prefix_builtins; /* prefix builtin macros with m4_ */ 191