/* $OpenBSD: mdef.h,v 1.33 2015/11/03 16:21:47 deraadt Exp $ */ /* $NetBSD: mdef.h,v 1.7 1996/01/13 23:25:27 pk Exp $ */ /*- * SPDX-License-Identifier: BSD-3-Clause * * Copyright (c) 1989, 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. */ #ifdef __GNUC__ # define UNUSED __attribute__((__unused__)) #else # define UNUSED #endif #define MACROTYPE 1 #define DEFINETYPE 2 #define EVALTYPE 3 #define SUBSTRTYPE 4 #define IFELSETYPE 5 #define LENTYPE 6 #define CHANGEQUOTETYPE 7 #define SYSCMDTYPE 8 #define UNDEFINETYPE 9 #define INCLUDETYPE 10 #define SINCLUDETYPE 11 #define PASTETYPE 12 #define SPASTETYPE 13 #define INCRTYPE 14 #define IFDEFTYPE 15 #define PUSHDEFTYPE 16 #define POPDEFTYPE 17 #define SHIFTTYPE 18 #define DECRTYPE 19 #define DIVERTTYPE 20 #define UNDIVERTTYPE 21 #define DIVNUMTYPE 22 #define MKSTEMPTYPE 23 #define ERRPRINTTYPE 24 #define M4WRAPTYPE 25 #define TRANSLITTYPE 26 #define DNLTYPE 27 #define DUMPDEFTYPE 28 #define CHANGECOMTYPE 29 #define INDEXTYPE 30 #define SYSVALTYPE 31 #define M4EXITTYPE 32 #define DEFNTYPE 33 #define SELFTYPE 34 #define INDIRTYPE 35 #define BUILTINTYPE 36 #define PATSUBSTTYPE 37 #define FILENAMETYPE 38 #define LINETYPE 39 #define REGEXPTYPE 40 #define ESYSCMDTYPE 41 #define TRACEONTYPE 42 #define TRACEOFFTYPE 43 #define FORMATTYPE 44 #define BUILTIN_MARKER "__builtin_" #define TYPEMASK 63 /* Keep bits really corresponding to a type. */ #define RECDEF 256 /* Pure recursive def, don't expand it */ #define NOARGS 512 /* builtin needs no args */ #define NEEDARGS 1024 /* mark builtin that need args with this */ /* * m4 special characters */ #define ARGFLAG '$' #define LPAREN '(' #define RPAREN ')' #define LQUOTE '`' #define RQUOTE '\'' #define COMMA ',' #define SCOMMT '#' #define ECOMMT '\n' /* * other important constants */ #define EOS '\0' #define MAXINP 10 /* maximum include files */ #define MAXOUT 10 /* maximum # of diversions */ #define BUFSIZE 4096 /* starting size of pushback buffer */ #define INITSTACKMAX 4096 /* starting size of call stack */ #define STRSPMAX 4096 /* starting size of string space */ #define MAXTOK 512 /* maximum chars in a tokn */ #define MAXCCHARS 5 /* max size of comment/quote delim */ #define ALL 1 #define TOP 0 #define TRUE 1 #define FALSE 0 #define cycle for(;;) /* * m4 data structures */ typedef struct ndblock *ndptr; struct macro_definition { struct macro_definition *next; char *defn; /* definition.. */ unsigned int type; /* type of the entry.. */ }; struct ndblock { /* hashtable structure */ unsigned int builtin_type; unsigned int trace_flags; struct macro_definition *d; char name[1]; /* entry name.. */ }; typedef union { /* stack structure */ int sfra; /* frame entry */ char *sstr; /* string entry */ } stae; struct input_file { FILE *file; char *name; unsigned long lineno; unsigned long synch_lineno; /* used for -s */ int c; }; #define STORAGE_STRSPACE 0 #define STORAGE_MACRO 1 #define STORAGE_OTHER 2 #define CURRENT_NAME (infile[ilevel].name) #define CURRENT_LINE (infile[ilevel].lineno) /* * macros for readibility and/or speed * * gpbc() - get a possibly pushed-back character * pushf() - push a call frame entry onto stack * pushs() - push a string pointer onto stack */ #define gpbc() (bp > bufbase) ? *--bp : obtain_char(infile+ilevel) #define pushf(x) \ do { \ if (++sp == (int)STACKMAX) \ enlarge_stack();\ mstack[sp].sfra = (x); \ sstack[sp] = STORAGE_OTHER; \ } while (0) #define pushs(x) \ do { \ if (++sp == (int)STACKMAX) \ enlarge_stack();\ mstack[sp].sstr = (x); \ sstack[sp] = STORAGE_STRSPACE; \ } while (0) #define pushs1(x) \ do { \ if (++sp == (int)STACKMAX) \ enlarge_stack();\ mstack[sp].sstr = (x); \ sstack[sp] = STORAGE_OTHER; \ } while (0) #define pushdef(p) \ do { \ if (++sp == (int)STACKMAX) \ enlarge_stack();\ mstack[sp].sstr = macro_getdef(p)->defn;\ sstack[sp] = STORAGE_MACRO; \ } while (0) /* * . . * | . | <-- sp | . | * +-------+ +-----+ * | arg 3 ----------------------->| str | * +-------+ | . | * | arg 2 ---PREVEP-----+ . * +-------+ | * . | | | * +-------+ | +-----+ * | plev | PARLEV +-------->| str | * +-------+ | . | * | type | CALTYP . * +-------+ * | prcf ---PREVFP--+ * +-------+ | * | . | PREVSP | * . | * +-------+ | * | <----------+ * +-------+ * */ #define PARLEV (mstack[fp].sfra) #define CALTYP (mstack[fp-2].sfra) #define TRACESTATUS (mstack[fp-1].sfra) #define PREVEP (mstack[fp+3].sstr) #define PREVSP (fp-4) #define PREVFP (mstack[fp-3].sfra)
