Annotation of src/usr.bin/m4/mdef.h, Revision 1.15
1.15 ! espie 1: /* $OpenBSD: mdef.h,v 1.14 2000/03/11 15:54:44 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
1.10 espie 75: #define SELFTYPE 34
1.14 espie 76: #define INDIRTYPE 35
77: #define BUILTINTYPE 36
78: #define PATSTYPE 37
79: #define FILENAMETYPE 38
80: #define LINETYPE 39
81: #define REGEXPTYPE 40
1.1 deraadt 82:
1.9 espie 83: #define TYPEMASK 63 /* Keep bits really corresponding to a type. */
84: #define STATIC 128 /* Name is statically allocated, don't free. */
85: #define RECDEF 256 /* Pure recursive def, don't expand it */
1.11 espie 86: #define NOARGS 512 /* builtin needs no args */
87: #define NEEDARGS 1024 /* mark builtin that need args with this */
1.1 deraadt 88:
89: /*
90: * m4 special characters
91: */
92:
93: #define ARGFLAG '$'
94: #define LPAREN '('
95: #define RPAREN ')'
96: #define LQUOTE '`'
97: #define RQUOTE '\''
98: #define COMMA ','
99: #define SCOMMT '#'
100: #define ECOMMT '\n'
101:
102: #ifdef msdos
103: #define system(str) (-1)
104: #endif
105:
106: /*
107: * other important constants
108: */
109:
1.5 espie 110: #define EOS '\0'
1.6 espie 111: #define MAXINP 10 /* maximum include files */
112: #define MAXOUT 10 /* maximum # of diversions */
113: #define MAXSTR 512 /* maximum size of string */
114: #define BUFSIZE 4096 /* starting size of pushback buffer */
1.15 ! espie 115: #define INITSTACKMAX 4096 /* starting size of call stack */
! 116: #define STRSPMAX 64 /* starting size of string space */
1.6 espie 117: #define MAXTOK MAXSTR /* maximum chars in a tokn */
118: #define HASHSIZE 199 /* maximum size of hashtab */
119: #define MAXCCHARS 5 /* max size of comment/quote delim */
1.1 deraadt 120:
121: #define ALL 1
122: #define TOP 0
123:
124: #define TRUE 1
125: #define FALSE 0
126: #define cycle for(;;)
127:
128: /*
129: * m4 data structures
130: */
131:
132: typedef struct ndblock *ndptr;
133:
1.9 espie 134: struct ndblock { /* hastable structure */
135: char *name; /* entry name.. */
136: char *defn; /* definition.. */
137: unsigned int type; /* type of the entry.. */
138: unsigned int hv; /* hash function value.. */
139: ndptr nxtptr; /* link to next entry.. */
1.1 deraadt 140: };
141:
142: #define nil ((ndptr) 0)
143:
144: struct keyblk {
145: char *knam; /* keyword name */
146: int ktyp; /* keyword type */
147: };
148:
149: typedef union { /* stack structure */
150: int sfra; /* frame entry */
151: char *sstr; /* string entry */
152: } stae;
153:
1.12 espie 154: struct input_file {
155: FILE *file;
156: char *name;
157: unsigned long lineno;
158: int c;
159: };
160:
161: #define CURRENT_NAME (infile[ilevel].name)
162: #define CURRENT_LINE (infile[ilevel].lineno)
1.1 deraadt 163: /*
164: * macros for readibility and/or speed
165: *
166: * gpbc() - get a possibly pushed-back character
167: * pushf() - push a call frame entry onto stack
168: * pushs() - push a string pointer onto stack
169: */
1.12 espie 170: #define gpbc() (bp > bufbase) ? *--bp : obtain_char(infile+ilevel)
1.15 ! espie 171: #define pushf(x) \
! 172: do { \
! 173: if (++sp == STACKMAX) \
! 174: enlarge_stack();\
! 175: mstack[sp].sfra = (x); \
! 176: sstack[sp] = 0; \
! 177: } while (0);
! 178:
! 179: #define pushs(x) \
! 180: do { \
! 181: if (++sp == STACKMAX) \
! 182: enlarge_stack();\
! 183: mstack[sp].sstr = (x); \
! 184: sstack[sp] = 1; \
! 185: } while (0);
! 186:
! 187: #define pushs1(x) \
! 188: do { \
! 189: if (++sp == STACKMAX) \
! 190: enlarge_stack();\
! 191: mstack[sp].sstr = (x); \
! 192: sstack[sp] = 0; \
! 193: } while (0);
1.1 deraadt 194:
195: /*
196: * . .
197: * | . | <-- sp | . |
198: * +-------+ +-----+
199: * | arg 3 ----------------------->| str |
200: * +-------+ | . |
201: * | arg 2 ---PREVEP-----+ .
202: * +-------+ |
203: * . | | |
204: * +-------+ | +-----+
205: * | plev | PARLEV +-------->| str |
206: * +-------+ | . |
207: * | type | CALTYP .
208: * +-------+
209: * | prcf ---PREVFP--+
210: * +-------+ |
211: * | . | PREVSP |
212: * . |
213: * +-------+ |
214: * | <----------+
215: * +-------+
216: *
217: */
218: #define PARLEV (mstack[fp].sfra)
219: #define CALTYP (mstack[fp-1].sfra)
1.15 ! espie 220: #define PREVEP (mstack[fp+3].sstr)
1.1 deraadt 221: #define PREVSP (fp-3)
222: #define PREVFP (mstack[fp-2].sfra)
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