1 /* $NetBSD: mdef.h,v 1.12 2003/08/07 11:14:33 agc Exp $ */ 2 /* $OpenBSD: mdef.h,v 1.21 2001/09/27 11:40:33 espie Exp $ */ 3 4 /* 5 * Copyright (c) 1989, 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 * @(#)mdef.h 8.1 (Berkeley) 6/6/93 36 */ 37 38 #define MACRTYPE 1 39 #define DEFITYPE 2 40 #define EXPRTYPE 3 41 #define SUBSTYPE 4 42 #define IFELTYPE 5 43 #define LENGTYPE 6 44 #define CHNQTYPE 7 45 #define SYSCTYPE 8 46 #define UNDFTYPE 9 47 #define INCLTYPE 10 48 #define SINCTYPE 11 49 #define PASTTYPE 12 50 #define SPASTYPE 13 51 #define INCRTYPE 14 52 #define IFDFTYPE 15 53 #define PUSDTYPE 16 54 #define POPDTYPE 17 55 #define SHIFTYPE 18 56 #define DECRTYPE 19 57 #define DIVRTYPE 20 58 #define UNDVTYPE 21 59 #define DIVNTYPE 22 60 #define MKTMTYPE 23 61 #define ERRPTYPE 24 62 #define M4WRTYPE 25 63 #define TRNLTYPE 26 64 #define DNLNTYPE 27 65 #define DUMPTYPE 28 66 #define CHNCTYPE 29 67 #define INDXTYPE 30 68 #define SYSVTYPE 31 69 #define EXITTYPE 32 70 #define DEFNTYPE 33 71 #define SELFTYPE 34 72 #define INDIRTYPE 35 73 #define BUILTINTYPE 36 74 #define PATSTYPE 37 75 #define FILENAMETYPE 38 76 #define LINETYPE 39 77 #define REGEXPTYPE 40 78 #define ESYSCMDTYPE 41 79 #define TRACEONTYPE 42 80 #define TRACEOFFTYPE 43 81 82 83 #define TYPEMASK 63 /* Keep bits really corresponding to a type. */ 84 #define RECDEF 256 /* Pure recursive def, don't expand it */ 85 #define NOARGS 512 /* builtin needs no args */ 86 #define NEEDARGS 1024 /* mark builtin that need args with this */ 87 88 /* 89 * m4 special characters 90 */ 91 92 #define ARGFLAG '$' 93 #define LPAREN '(' 94 #define RPAREN ')' 95 #define LQUOTE '`' 96 #define RQUOTE '\'' 97 #define COMMA ',' 98 #define SCOMMT '#' 99 #define ECOMMT '\n' 100 101 #ifdef msdos 102 #define system(str) (-1) 103 #endif 104 105 /* 106 * other important constants 107 */ 108 109 #define EOS '\0' 110 #define MAXINP 10 /* maximum include files */ 111 #define MAXOUT 10 /* maximum # of diversions */ 112 #define BUFSIZE 4096 /* starting size of pushback buffer */ 113 #define INITSTACKMAX 4096 /* starting size of call stack */ 114 #define STRSPMAX 4096 /* starting size of string space */ 115 #define MAXTOK 512 /* maximum chars in a tokn */ 116 #define HASHSIZE 199 /* maximum size of hashtab */ 117 #define MAXCCHARS 5 /* max size of comment/quote delim */ 118 119 #define ALL 1 120 #define TOP 0 121 122 #define TRUE 1 123 #define FALSE 0 124 #define cycle for(;;) 125 126 /* 127 * m4 data structures 128 */ 129 130 typedef struct ndblock *ndptr; 131 132 struct ndblock { /* hastable structure */ 133 char *name; /* entry name.. */ 134 char *defn; /* definition.. */ 135 unsigned int type; /* type of the entry.. */ 136 unsigned int hv; /* hash function value.. */ 137 ndptr nxtptr; /* link to next entry.. */ 138 }; 139 140 #define nil ((ndptr) 0) 141 142 struct keyblk { 143 const char *knam; /* keyword name */ 144 int ktyp; /* keyword type */ 145 }; 146 147 typedef union { /* stack structure */ 148 int sfra; /* frame entry */ 149 char *sstr; /* string entry */ 150 } stae; 151 152 struct input_file { 153 FILE *file; 154 char *name; 155 unsigned long lineno; 156 int c; 157 }; 158 159 #define CURRENT_NAME (infile[ilevel].name) 160 #define CURRENT_LINE (infile[ilevel].lineno) 161 /* 162 * macros for readibility and/or speed 163 * 164 * gpbc() - get a possibly pushed-back character 165 * pushf() - push a call frame entry onto stack 166 * pushs() - push a string pointer onto stack 167 */ 168 #define gpbc() (bp > bufbase) ? *--bp : obtain_char(infile+ilevel) 169 #define pushf(x) \ 170 do { \ 171 if (++sp == STACKMAX) \ 172 enlarge_stack();\ 173 mstack[sp].sfra = (x); \ 174 sstack[sp] = 0; \ 175 } while (0) 176 177 #define pushs(x) \ 178 do { \ 179 if (++sp == STACKMAX) \ 180 enlarge_stack();\ 181 mstack[sp].sstr = (x); \ 182 sstack[sp] = 1; \ 183 } while (0) 184 185 #define pushs1(x) \ 186 do { \ 187 if (++sp == STACKMAX) \ 188 enlarge_stack();\ 189 mstack[sp].sstr = (x); \ 190 sstack[sp] = 0; \ 191 } while (0) 192 193 /* 194 * . . 195 * | . | <-- sp | . | 196 * +-------+ +-----+ 197 * | arg 3 ----------------------->| str | 198 * +-------+ | . | 199 * | arg 2 ---PREVEP-----+ . 200 * +-------+ | 201 * . | | | 202 * +-------+ | +-----+ 203 * | plev | PARLEV +-------->| str | 204 * +-------+ | . | 205 * | type | CALTYP . 206 * +-------+ 207 * | prcf ---PREVFP--+ 208 * +-------+ | 209 * | . | PREVSP | 210 * . | 211 * +-------+ | 212 * | <----------+ 213 * +-------+ 214 * 215 */ 216 #define PARLEV (mstack[fp].sfra) 217 #define CALTYP (mstack[fp-1].sfra) 218 #define PREVEP (mstack[fp+3].sstr) 219 #define PREVSP (fp-3) 220 #define PREVFP (mstack[fp-2].sfra) 221