4b087712af
* Provide some GNUisms as extensions. * Provide dynamically growable string space. * Make define(defn(foo)) work correctly for builtins. (The current version is supposed to be capable of satisfying autoconf.) All still relevant NetBSD changes have been preserved in this version, and formatting and style fixes have been applied in various places. Thanks to Masao Uebayashi <uebayasi@soum.co.jp> for pointing this out.
225 lines
6.5 KiB
C
225 lines
6.5 KiB
C
/* $NetBSD: mdef.h,v 1.11 2001/11/14 06:16:09 tv Exp $ */
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/* $OpenBSD: mdef.h,v 1.21 2001/09/27 11:40:33 espie 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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*/
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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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* gpbc() - get a possibly pushed-back character
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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 gpbc() (bp > bufbase) ? *--bp : obtain_char(infile+ilevel)
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#define pushf(x) \
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do { \
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if (++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 (++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 (++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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