224 lines
6.5 KiB
C
224 lines
6.5 KiB
C
/* $OpenBSD: mdef.h,v 1.21 2001/09/27 11:40:33 espie Exp $ */
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/* $NetBSD: mdef.h,v 1.7 1996/01/13 23:25:27 pk Exp $ */
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/*
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* Copyright (c) 1989, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Ozan Yigit at York University.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)mdef.h 8.1 (Berkeley) 6/6/93
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* $FreeBSD$
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*/
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#define MACRTYPE 1
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#define DEFITYPE 2
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#define EXPRTYPE 3
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#define SUBSTYPE 4
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#define IFELTYPE 5
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#define LENGTYPE 6
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#define CHNQTYPE 7
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#define SYSCTYPE 8
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#define UNDFTYPE 9
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#define INCLTYPE 10
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#define SINCTYPE 11
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#define PASTTYPE 12
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#define SPASTYPE 13
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#define INCRTYPE 14
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#define IFDFTYPE 15
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#define PUSDTYPE 16
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#define POPDTYPE 17
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#define SHIFTYPE 18
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#define DECRTYPE 19
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#define DIVRTYPE 20
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#define UNDVTYPE 21
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#define DIVNTYPE 22
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#define MKTMTYPE 23
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#define ERRPTYPE 24
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#define M4WRTYPE 25
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#define TRNLTYPE 26
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#define DNLNTYPE 27
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#define DUMPTYPE 28
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#define CHNCTYPE 29
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#define INDXTYPE 30
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#define SYSVTYPE 31
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#define EXITTYPE 32
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#define DEFNTYPE 33
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#define SELFTYPE 34
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#define INDIRTYPE 35
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#define BUILTINTYPE 36
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#define PATSTYPE 37
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#define FILENAMETYPE 38
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#define LINETYPE 39
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#define REGEXPTYPE 40
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#define ESYSCMDTYPE 41
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#define TRACEONTYPE 42
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#define TRACEOFFTYPE 43
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#define TYPEMASK 63 /* Keep bits really corresponding to a type. */
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#define RECDEF 256 /* Pure recursive def, don't expand it */
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#define NOARGS 512 /* builtin needs no args */
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#define NEEDARGS 1024 /* mark builtin that need args with this */
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/*
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* m4 special characters
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*/
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#define ARGFLAG '$'
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#define LPAREN '('
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#define RPAREN ')'
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#define LQUOTE '`'
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#define RQUOTE '\''
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#define COMMA ','
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#define SCOMMT '#'
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#define ECOMMT '\n'
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#ifdef msdos
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#define system(str) (-1)
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#endif
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/*
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* other important constants
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*/
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#define EOS '\0'
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#define MAXINP 10 /* maximum include files */
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#define MAXOUT 10 /* maximum # of diversions */
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#define BUFSIZE 4096 /* starting size of pushback buffer */
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#define INITSTACKMAX 4096 /* starting size of call stack */
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#define STRSPMAX 4096 /* starting size of string space */
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#define MAXTOK 512 /* maximum chars in a tokn */
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#define HASHSIZE 199 /* maximum size of hashtab */
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#define MAXCCHARS 5 /* max size of comment/quote delim */
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#define ALL 1
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#define TOP 0
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#define TRUE 1
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#define FALSE 0
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#define cycle for(;;)
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/*
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* m4 data structures
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*/
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typedef struct ndblock *ndptr;
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struct ndblock { /* hastable structure */
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char *name; /* entry name.. */
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char *defn; /* definition.. */
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unsigned int type; /* type of the entry.. */
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unsigned int hv; /* hash function value.. */
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ndptr nxtptr; /* link to next entry.. */
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};
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#define nil ((ndptr) 0)
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struct keyblk {
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const char *knam; /* keyword name */
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int ktyp; /* keyword type */
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};
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typedef union { /* stack structure */
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int sfra; /* frame entry */
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char *sstr; /* string entry */
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} stae;
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struct input_file {
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FILE *file;
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char *name;
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unsigned long lineno;
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int c;
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};
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#define CURRENT_NAME (infile[ilevel].name)
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#define CURRENT_LINE (infile[ilevel].lineno)
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/*
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* macros for readibility and/or speed
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*
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* pushf() - push a call frame entry onto stack
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* pushs() - push a string pointer onto stack
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*/
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#define pushf(x) \
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do { \
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if ((uintptr_t)++sp == STACKMAX) \
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enlarge_stack(); \
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mstack[sp].sfra = (x); \
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sstack[sp] = 0; \
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} while (0)
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#define pushs(x) \
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do { \
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if ((uintptr_t)++sp == STACKMAX) \
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enlarge_stack(); \
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mstack[sp].sstr = (x); \
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sstack[sp] = 1; \
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} while (0)
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#define pushs1(x) \
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do { \
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if ((uintptr_t)++sp == STACKMAX) \
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enlarge_stack(); \
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mstack[sp].sstr = (x); \
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sstack[sp] = 0; \
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} while (0)
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/*
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* . .
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* | . | <-- sp | . |
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* +-------+ +-----+
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* | arg 3 ----------------------->| str |
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* +-------+ | . |
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* | arg 2 ---PREVEP-----+ .
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* +-------+ |
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* . | | |
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* +-------+ | +-----+
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* | plev | PARLEV +-------->| str |
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* +-------+ | . |
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* | type | CALTYP .
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* +-------+
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* | prcf ---PREVFP--+
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* +-------+ |
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* | . | PREVSP |
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* . |
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* +-------+ |
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* | <----------+
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* +-------+
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*
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*/
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#define PARLEV (mstack[fp].sfra)
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#define CALTYP (mstack[fp-1].sfra)
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#define PREVEP (mstack[fp+3].sstr)
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#define PREVSP (fp-3)
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#define PREVFP (mstack[fp-2].sfra)
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