xref: /dragonfly/usr.bin/m4/mdef.h (revision 4afad3d8)
1 /*	$OpenBSD: mdef.h,v 1.31 2011/09/27 07:24:02 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. 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  * $FreeBSD: src/usr.bin/m4/mdef.h,v 1.13 2012/11/17 01:54:24 svnexp Exp $
37  */
38 
39 #define MACRTYPE        1
40 #define DEFITYPE        2
41 #define EXPRTYPE        3
42 #define SUBSTYPE        4
43 #define IFELTYPE        5
44 #define LENGTYPE        6
45 #define CHNQTYPE        7
46 #define SYSCTYPE        8
47 #define UNDFTYPE        9
48 #define INCLTYPE        10
49 #define SINCTYPE        11
50 #define PASTTYPE        12
51 #define SPASTYPE        13
52 #define INCRTYPE        14
53 #define IFDFTYPE        15
54 #define PUSDTYPE        16
55 #define POPDTYPE        17
56 #define SHIFTYPE        18
57 #define DECRTYPE        19
58 #define DIVRTYPE        20
59 #define UNDVTYPE        21
60 #define DIVNTYPE        22
61 #define MKTMTYPE        23
62 #define ERRPTYPE        24
63 #define M4WRTYPE        25
64 #define TRNLTYPE        26
65 #define DNLNTYPE        27
66 #define DUMPTYPE        28
67 #define CHNCTYPE        29
68 #define INDXTYPE        30
69 #define SYSVTYPE        31
70 #define EXITTYPE        32
71 #define DEFNTYPE        33
72 #define SELFTYPE	34
73 #define INDIRTYPE	35
74 #define BUILTINTYPE	36
75 #define PATSTYPE	37
76 #define FILENAMETYPE	38
77 #define LINETYPE	39
78 #define REGEXPTYPE	40
79 #define ESYSCMDTYPE	41
80 #define TRACEONTYPE	42
81 #define TRACEOFFTYPE	43
82 #define FORMATTYPE	44
83 
84 #define BUILTIN_MARKER	"__builtin_"
85 
86 #define TYPEMASK	63	/* Keep bits really corresponding to a type. */
87 #define RECDEF		256	/* Pure recursive def, don't expand it */
88 #define NOARGS		512	/* builtin needs no args */
89 #define NEEDARGS	1024	/* mark builtin that need args with this */
90 
91 /*
92  * m4 special characters
93  */
94 
95 #define ARGFLAG         '$'
96 #define LPAREN          '('
97 #define RPAREN          ')'
98 #define LQUOTE          '`'
99 #define RQUOTE          '\''
100 #define COMMA           ','
101 #define SCOMMT          '#'
102 #define ECOMMT          '\n'
103 
104 #ifdef msdos
105 #define system(str)	(-1)
106 #endif
107 
108 /*
109  * other important constants
110  */
111 
112 #define EOS             '\0'
113 #define MAXINP          10              /* maximum include files	    */
114 #define MAXOUT          10              /* maximum # of diversions	    */
115 #define BUFSIZE         4096            /* starting size of pushback buffer */
116 #define INITSTACKMAX    4096		/* starting size of call stack      */
117 #define STRSPMAX        4096            /* starting size of string space    */
118 #define MAXTOK          512		/* maximum chars in a tokn	    */
119 #define MAXCCHARS	5		/* max size of comment/quote delim  */
120 
121 #define ALL             1
122 #define TOP             0
123 
124 #define TRUE            1
125 #define FALSE           0
126 
127 /*
128  * m4 data structures
129  */
130 
131 typedef struct ndblock *ndptr;
132 
133 struct macro_definition {
134 	struct macro_definition *next;
135 	char		*defn;	/* definition..               */
136 	unsigned int	type;	/* type of the entry..        */
137 };
138 
139 
140 struct ndblock {			/* hashtable structure         */
141 	unsigned int		builtin_type;
142 	unsigned int		trace_flags;
143 	struct macro_definition *d;
144 	char		name[1];	/* entry name..               */
145 };
146 
147 typedef union {			/* stack structure */
148 	int	sfra;		/* frame entry  */
149 	char	*sstr;		/* string entry */
150 } stae;
151 
152 struct input_file {
153 	FILE		*file;
154 	char		*name;
155 	unsigned long	lineno;
156 	unsigned long   synch_lineno;	/* used for -s */
157 	int		c;
158 };
159 
160 #define CURRENT_NAME	(infile[ilevel].name)
161 #define CURRENT_LINE	(infile[ilevel].lineno)
162 /*
163  * macros for readibility and/or speed
164  *
165  *      gpbc()  - get a possibly pushed-back character
166  *      pushf() - push a call frame entry onto stack
167  *      pushs() - push a string pointer onto stack
168  */
169 #define gpbc()	 (bp > bufbase) ? *--bp : obtain_char(infile+ilevel)
170 #define pushf(x)			\
171 	do {				\
172 		if (++sp == (int)STACKMAX)	\
173 			enlarge_stack();\
174 		mstack[sp].sfra = (x);	\
175 		sstack[sp] = 0; \
176 	} while (0)
177 
178 #define pushs(x)			\
179 	do {				\
180 		if (++sp == (int)STACKMAX)	\
181 			enlarge_stack();\
182 		mstack[sp].sstr = (x);	\
183 		sstack[sp] = 1; \
184 	} while (0)
185 
186 #define pushs1(x)			\
187 	do {				\
188 		if (++sp == (int)STACKMAX)	\
189 			enlarge_stack();\
190 		mstack[sp].sstr = (x);	\
191 		sstack[sp] = 0; \
192 	} while (0)
193 
194 /*
195  *	    .				   .
196  *	|   .	|  <-- sp		|  .  |
197  *	+-------+			+-----+
198  *	| arg 3 ----------------------->| str |
199  *	+-------+			|  .  |
200  *	| arg 2 ---PREVEP-----+		   .
201  *	+-------+	      |
202  *	    .		      |		|     |
203  *	+-------+	      |		+-----+
204  *	| plev	|  PARLEV     +-------->| str |
205  *	+-------+			|  .  |
206  *	| type	|  CALTYP		   .
207  *	+-------+
208  *	| prcf	---PREVFP--+
209  *	+-------+	   |
210  *	|   .	|  PREVSP  |
211  *	    .		   |
212  *	+-------+	   |
213  *	|	<----------+
214  *	+-------+
215  *
216  */
217 #define PARLEV  (mstack[fp].sfra)
218 #define	CALTYP	(mstack[fp - 2].sfra)
219 #define	TRACESTATUS (mstack[fp - 1].sfra)
220 #define	PREVEP	(mstack[fp + 3].sstr)
221 #define	PREVSP	(fp - 4)
222 #define	PREVFP	(mstack[fp - 3].sfra)
223