Annotation of src/usr.bin/m4/mdef.h, Revision 1.8
1.8 ! espie 1: /* $OpenBSD: mdef.h,v 1.7 1999/09/14 08:35:17 espie Exp $ */
1.2 deraadt 2: /* $NetBSD: mdef.h,v 1.7 1996/01/13 23:25:27 pk Exp $ */
1.1 deraadt 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. All advertising materials mentioning features or use of this software
20: * must display the following acknowledgement:
21: * This product includes software developed by the University of
22: * California, Berkeley and its contributors.
23: * 4. Neither the name of the University nor the names of its contributors
24: * may be used to endorse or promote products derived from this software
25: * without specific prior written permission.
26: *
27: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
28: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
29: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
30: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
31: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
32: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
33: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
34: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
35: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
36: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
37: * SUCH DAMAGE.
38: *
39: * @(#)mdef.h 8.1 (Berkeley) 6/6/93
40: */
41:
42: #define MACRTYPE 1
43: #define DEFITYPE 2
44: #define EXPRTYPE 3
45: #define SUBSTYPE 4
46: #define IFELTYPE 5
47: #define LENGTYPE 6
48: #define CHNQTYPE 7
49: #define SYSCTYPE 8
50: #define UNDFTYPE 9
51: #define INCLTYPE 10
52: #define SINCTYPE 11
53: #define PASTTYPE 12
54: #define SPASTYPE 13
55: #define INCRTYPE 14
56: #define IFDFTYPE 15
57: #define PUSDTYPE 16
58: #define POPDTYPE 17
59: #define SHIFTYPE 18
60: #define DECRTYPE 19
61: #define DIVRTYPE 20
62: #define UNDVTYPE 21
63: #define DIVNTYPE 22
64: #define MKTMTYPE 23
65: #define ERRPTYPE 24
66: #define M4WRTYPE 25
67: #define TRNLTYPE 26
68: #define DNLNTYPE 27
69: #define DUMPTYPE 28
70: #define CHNCTYPE 29
71: #define INDXTYPE 30
72: #define SYSVTYPE 31
73: #define EXITTYPE 32
74: #define DEFNTYPE 33
75:
76: #define STATIC 128
77:
78: /*
79: * m4 special characters
80: */
81:
82: #define ARGFLAG '$'
83: #define LPAREN '('
84: #define RPAREN ')'
85: #define LQUOTE '`'
86: #define RQUOTE '\''
87: #define COMMA ','
88: #define SCOMMT '#'
89: #define ECOMMT '\n'
90:
91: #ifdef msdos
92: #define system(str) (-1)
93: #endif
94:
95: /*
96: * other important constants
97: */
98:
1.5 espie 99: #define EOS '\0'
1.6 espie 100: #define MAXINP 10 /* maximum include files */
101: #define MAXOUT 10 /* maximum # of diversions */
102: #define MAXSTR 512 /* maximum size of string */
103: #define BUFSIZE 4096 /* starting size of pushback buffer */
1.7 espie 104: #define STACKMAX 4096 /* size of call stack */
1.6 espie 105: #define STRSPMAX 4096 /* starting size of string space */
106: #define MAXTOK MAXSTR /* maximum chars in a tokn */
107: #define HASHSIZE 199 /* maximum size of hashtab */
108: #define MAXCCHARS 5 /* max size of comment/quote delim */
1.1 deraadt 109:
110: #define ALL 1
111: #define TOP 0
112:
113: #define TRUE 1
114: #define FALSE 0
115: #define cycle for(;;)
116:
117: /*
118: * m4 data structures
119: */
120:
121: typedef struct ndblock *ndptr;
122:
123: struct ndblock { /* hastable structure */
124: char *name; /* entry name.. */
125: char *defn; /* definition.. */
126: int type; /* type of the entry.. */
1.8 ! espie 127: unsigned hv;
1.1 deraadt 128: ndptr nxtptr; /* link to next entry.. */
129: };
130:
131: #define nil ((ndptr) 0)
132:
133: struct keyblk {
134: char *knam; /* keyword name */
135: int ktyp; /* keyword type */
136: };
137:
138: typedef union { /* stack structure */
139: int sfra; /* frame entry */
140: char *sstr; /* string entry */
141: } stae;
1.4 deraadt 142:
143: typedef short pbent; /* pushback entry; needs to hold chars + EOF */
1.1 deraadt 144:
145: /*
146: * macros for readibility and/or speed
147: *
148: * gpbc() - get a possibly pushed-back character
149: * pushf() - push a call frame entry onto stack
150: * pushs() - push a string pointer onto stack
151: */
152: #define gpbc() (bp > bufbase) ? *--bp : getc(infile[ilevel])
153: #define pushf(x) if (sp < STACKMAX) mstack[++sp].sfra = (x)
154: #define pushs(x) if (sp < STACKMAX) mstack[++sp].sstr = (x)
155:
156: /*
157: * . .
158: * | . | <-- sp | . |
159: * +-------+ +-----+
160: * | arg 3 ----------------------->| str |
161: * +-------+ | . |
162: * | arg 2 ---PREVEP-----+ .
163: * +-------+ |
164: * . | | |
165: * +-------+ | +-----+
166: * | plev | PARLEV +-------->| str |
167: * +-------+ | . |
168: * | type | CALTYP .
169: * +-------+
170: * | prcf ---PREVFP--+
171: * +-------+ |
172: * | . | PREVSP |
173: * . |
174: * +-------+ |
175: * | <----------+
176: * +-------+
177: *
178: */
179: #define PARLEV (mstack[fp].sfra)
180: #define CALTYP (mstack[fp-1].sfra)
1.6 espie 181: #define PREVEP compute_prevep()
1.1 deraadt 182: #define PREVSP (fp-3)
183: #define PREVFP (mstack[fp-2].sfra)
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