mdef.h revision 1.13
1/* $OpenBSD: mdef.h,v 1.29 2006/03/20 20:27:45 espie Exp $ */ 2/* $NetBSD: mdef.h,v 1.13 2009/10/26 21:11:28 christos 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#ifdef __GNUC__ 39# define UNUSED __attribute__((__unused__)) 40#else 41# define UNUSED 42#endif 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#define FORMATTYPE 44 88 89#define BUILTIN_MARKER "__builtin_" 90 91#define TYPEMASK 63 /* Keep bits really corresponding to a type. */ 92#define RECDEF 256 /* Pure recursive def, don't expand it */ 93#define NOARGS 512 /* builtin needs no args */ 94#define NEEDARGS 1024 /* mark builtin that need args with this */ 95 96/* 97 * m4 special characters 98 */ 99 100#define ARGFLAG '$' 101#define LPAREN '(' 102#define RPAREN ')' 103#define LQUOTE '`' 104#define RQUOTE '\'' 105#define COMMA ',' 106#define SCOMMT '#' 107#define ECOMMT '\n' 108 109#ifdef msdos 110#define system(str) (-1) 111#endif 112 113/* 114 * other important constants 115 */ 116 117#define EOS '\0' 118#define MAXINP 10 /* maximum include files */ 119#define MAXOUT 10 /* maximum # of diversions */ 120#define BUFSIZE 4096 /* starting size of pushback buffer */ 121#define INITSTACKMAX 4096 /* starting size of call stack */ 122#define STRSPMAX 4096 /* starting size of string space */ 123#define MAXTOK 512 /* maximum chars in a tokn */ 124#define HASHSIZE 199 /* maximum size of hashtab */ 125#define MAXCCHARS 5 /* max size of comment/quote delim */ 126 127#define ALL 1 128#define TOP 0 129 130#define TRUE 1 131#define FALSE 0 132#define cycle for(;;) 133 134/* 135 * m4 data structures 136 */ 137 138typedef struct ndblock *ndptr; 139 140struct macro_definition { 141 struct macro_definition *next; 142 char *defn; /* definition.. */ 143 unsigned int type; /* type of the entry.. */ 144}; 145 146 147struct ndblock { /* hashtable structure */ 148 unsigned int builtin_type; 149 unsigned int trace_flags; 150 struct macro_definition *d; 151 char name[1]; /* entry name.. */ 152}; 153 154typedef union { /* stack structure */ 155 int sfra; /* frame entry */ 156 char *sstr; /* string entry */ 157} stae; 158 159struct input_file { 160 FILE *file; 161 char *name; 162 unsigned long lineno; 163 unsigned long synch_lineno; /* used for -s */ 164 int c; 165}; 166 167#define CURRENT_NAME (infile[ilevel].name) 168#define CURRENT_LINE (infile[ilevel].lineno) 169/* 170 * macros for readibility and/or speed 171 * 172 * gpbc() - get a possibly pushed-back character 173 * pushf() - push a call frame entry onto stack 174 * pushs() - push a string pointer onto stack 175 */ 176#define gpbc() (bp > bufbase) ? *--bp : obtain_char(infile+ilevel) 177#define pushf(x) \ 178 do { \ 179 if ((size_t)++sp == STACKMAX) \ 180 enlarge_stack();\ 181 mstack[sp].sfra = (x); \ 182 sstack[sp] = 0; \ 183 } while (0) 184 185#define pushs(x) \ 186 do { \ 187 if ((size_t)++sp == STACKMAX) \ 188 enlarge_stack();\ 189 mstack[sp].sstr = (x); \ 190 sstack[sp] = 1; \ 191 } while (0) 192 193#define pushs1(x) \ 194 do { \ 195 if ((size_t)++sp == STACKMAX) \ 196 enlarge_stack();\ 197 mstack[sp].sstr = (x); \ 198 sstack[sp] = 0; \ 199 } while (0) 200 201/* 202 * . . 203 * | . | <-- sp | . | 204 * +-------+ +-----+ 205 * | arg 3 ----------------------->| str | 206 * +-------+ | . | 207 * | arg 2 ---PREVEP-----+ . 208 * +-------+ | 209 * . | | | 210 * +-------+ | +-----+ 211 * | plev | PARLEV +-------->| str | 212 * +-------+ | . | 213 * | type | CALTYP . 214 * +-------+ 215 * | prcf ---PREVFP--+ 216 * +-------+ | 217 * | . | PREVSP | 218 * . | 219 * +-------+ | 220 * | <----------+ 221 * +-------+ 222 * 223 */ 224#define PARLEV (mstack[fp].sfra) 225#define CALTYP (mstack[fp-2].sfra) 226#define TRACESTATUS (mstack[fp-1].sfra) 227#define PREVEP (mstack[fp+3].sstr) 228#define PREVSP (fp-4) 229#define PREVFP (mstack[fp-3].sfra) 230