1 /* $OpenBSD: mdef.h,v 1.21 2001/09/27 11:40:33 espie Exp $ */ 2 /* $NetBSD: mdef.h,v 1.7 1996/01/13 23:25:27 pk 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. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the University of 22 * California, Berkeley and its contributors. 23 * 4. Neither the name of the University nor the names of its contributors 24 * may be used to endorse or promote products derived from this software 25 * without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 29 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 30 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 31 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 35 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 36 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 37 * SUCH DAMAGE. 38 * 39 * @(#)mdef.h 8.1 (Berkeley) 6/6/93 40 * $FreeBSD: src/usr.bin/m4/mdef.h,v 1.10 2002/07/15 02:15:12 jmallett Exp $ 41 * $DragonFly: src/usr.bin/m4/mdef.h,v 1.3 2006/12/27 21:29:02 pavalos Exp $ 42 */ 43 44 #define MACRTYPE 1 45 #define DEFITYPE 2 46 #define EXPRTYPE 3 47 #define SUBSTYPE 4 48 #define IFELTYPE 5 49 #define LENGTYPE 6 50 #define CHNQTYPE 7 51 #define SYSCTYPE 8 52 #define UNDFTYPE 9 53 #define INCLTYPE 10 54 #define SINCTYPE 11 55 #define PASTTYPE 12 56 #define SPASTYPE 13 57 #define INCRTYPE 14 58 #define IFDFTYPE 15 59 #define PUSDTYPE 16 60 #define POPDTYPE 17 61 #define SHIFTYPE 18 62 #define DECRTYPE 19 63 #define DIVRTYPE 20 64 #define UNDVTYPE 21 65 #define DIVNTYPE 22 66 #define MKTMTYPE 23 67 #define ERRPTYPE 24 68 #define M4WRTYPE 25 69 #define TRNLTYPE 26 70 #define DNLNTYPE 27 71 #define DUMPTYPE 28 72 #define CHNCTYPE 29 73 #define INDXTYPE 30 74 #define SYSVTYPE 31 75 #define EXITTYPE 32 76 #define DEFNTYPE 33 77 #define SELFTYPE 34 78 #define INDIRTYPE 35 79 #define BUILTINTYPE 36 80 #define PATSTYPE 37 81 #define FILENAMETYPE 38 82 #define LINETYPE 39 83 #define REGEXPTYPE 40 84 #define ESYSCMDTYPE 41 85 #define TRACEONTYPE 42 86 #define TRACEOFFTYPE 43 87 88 89 #define TYPEMASK 63 /* Keep bits really corresponding to a type. */ 90 #define RECDEF 256 /* Pure recursive def, don't expand it */ 91 #define NOARGS 512 /* builtin needs no args */ 92 #define NEEDARGS 1024 /* mark builtin that need args with this */ 93 94 /* 95 * m4 special characters 96 */ 97 98 #define ARGFLAG '$' 99 #define LPAREN '(' 100 #define RPAREN ')' 101 #define LQUOTE '`' 102 #define RQUOTE '\'' 103 #define COMMA ',' 104 #define SCOMMT '#' 105 #define ECOMMT '\n' 106 107 #ifdef msdos 108 #define system(str) (-1) 109 #endif 110 111 /* 112 * other important constants 113 */ 114 115 #define EOS '\0' 116 #define MAXINP 10 /* maximum include files */ 117 #define MAXOUT 10 /* maximum # of diversions */ 118 #define BUFSIZE 4096 /* starting size of pushback buffer */ 119 #define INITSTACKMAX 4096 /* starting size of call stack */ 120 #define STRSPMAX 4096 /* starting size of string space */ 121 #define MAXTOK 512 /* maximum chars in a tokn */ 122 #define HASHSIZE 199 /* maximum size of hashtab */ 123 #define MAXCCHARS 5 /* max size of comment/quote delim */ 124 125 #define ALL 1 126 #define TOP 0 127 128 #define TRUE 1 129 #define FALSE 0 130 #define cycle for(;;) 131 132 /* 133 * m4 data structures 134 */ 135 136 typedef struct ndblock *ndptr; 137 138 struct ndblock { /* hastable structure */ 139 char *name; /* entry name.. */ 140 char *defn; /* definition.. */ 141 unsigned int type; /* type of the entry.. */ 142 unsigned int hv; /* hash function value.. */ 143 ndptr nxtptr; /* link to next entry.. */ 144 }; 145 146 #define nil ((ndptr) 0) 147 148 struct keyblk { 149 const char *knam; /* keyword name */ 150 int ktyp; /* keyword type */ 151 }; 152 153 typedef union { /* stack structure */ 154 int sfra; /* frame entry */ 155 char *sstr; /* string entry */ 156 } stae; 157 158 struct input_file { 159 FILE *file; 160 char *name; 161 unsigned long lineno; 162 int c; 163 }; 164 165 #define CURRENT_NAME (infile[ilevel].name) 166 #define CURRENT_LINE (infile[ilevel].lineno) 167 /* 168 * macros for readibility and/or speed 169 * 170 * pushf() - push a call frame entry onto stack 171 * pushs() - push a string pointer onto stack 172 */ 173 #define pushf(x) \ 174 do { \ 175 if ((uintptr_t)++sp == STACKMAX) \ 176 enlarge_stack(); \ 177 mstack[sp].sfra = (x); \ 178 sstack[sp] = 0; \ 179 } while (0) 180 181 #define pushs(x) \ 182 do { \ 183 if ((uintptr_t)++sp == STACKMAX) \ 184 enlarge_stack(); \ 185 mstack[sp].sstr = (x); \ 186 sstack[sp] = 1; \ 187 } while (0) 188 189 #define pushs1(x) \ 190 do { \ 191 if ((uintptr_t)++sp == STACKMAX) \ 192 enlarge_stack(); \ 193 mstack[sp].sstr = (x); \ 194 sstack[sp] = 0; \ 195 } while (0) 196 197 /* 198 * . . 199 * | . | <-- sp | . | 200 * +-------+ +-----+ 201 * | arg 3 ----------------------->| str | 202 * +-------+ | . | 203 * | arg 2 ---PREVEP-----+ . 204 * +-------+ | 205 * . | | | 206 * +-------+ | +-----+ 207 * | plev | PARLEV +-------->| str | 208 * +-------+ | . | 209 * | type | CALTYP . 210 * +-------+ 211 * | prcf ---PREVFP--+ 212 * +-------+ | 213 * | . | PREVSP | 214 * . | 215 * +-------+ | 216 * | <----------+ 217 * +-------+ 218 * 219 */ 220 #define PARLEV (mstack[fp].sfra) 221 #define CALTYP (mstack[fp-1].sfra) 222 #define PREVEP (mstack[fp+3].sstr) 223 #define PREVSP (fp-3) 224 #define PREVFP (mstack[fp-2].sfra) 225