maketab.c revision 1.17 
1/*	$OpenBSD: maketab.c,v 1.17 2020/06/10 21:05:02 millert Exp $	*/
2/****************************************************************
3Copyright (C) Lucent Technologies 1997
4All Rights Reserved
5
6Permission to use, copy, modify, and distribute this software and
7its documentation for any purpose and without fee is hereby
8granted, provided that the above copyright notice appear in all
9copies and that both that the copyright notice and this
10permission notice and warranty disclaimer appear in supporting
11documentation, and that the name Lucent Technologies or any of
12its entities not be used in advertising or publicity pertaining
13to distribution of the software without specific, written prior
14permission.
15
16LUCENT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
17INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS.
18IN NO EVENT SHALL LUCENT OR ANY OF ITS ENTITIES BE LIABLE FOR ANY
19SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
20WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER
21IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
22ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
23THIS SOFTWARE.
24****************************************************************/
25
26/*
27 * this program makes the table to link function names
28 * and type indices that is used by execute() in run.c.
29 * it finds the indices in ytab.h, produced by yacc.
30 */
31
32#include <stdio.h>
33#include <string.h>
34#include <stdlib.h>
35#include "awk.h"
36#include "ytab.h"
37
38struct xx
39{	int token;
40	const char *name;
41	const char *pname;
42} proc[] = {
43	{ PROGRAM, "program", NULL },
44	{ BOR, "boolop", " || " },
45	{ AND, "boolop", " && " },
46	{ NOT, "boolop", " !" },
47	{ NE, "relop", " != " },
48	{ EQ, "relop", " == " },
49	{ LE, "relop", " <= " },
50	{ LT, "relop", " < " },
51	{ GE, "relop", " >= " },
52	{ GT, "relop", " > " },
53	{ ARRAY, "array", NULL },
54	{ INDIRECT, "indirect", "$(" },
55	{ SUBSTR, "substr", "substr" },
56	{ SUB, "sub", "sub" },
57	{ GSUB, "gsub", "gsub" },
58	{ INDEX, "sindex", "sindex" },
59	{ SPRINTF, "awksprintf", "sprintf " },
60	{ ADD, "arith", " + " },
61	{ MINUS, "arith", " - " },
62	{ MULT, "arith", " * " },
63	{ DIVIDE, "arith", " / " },
64	{ MOD, "arith", " % " },
65	{ UMINUS, "arith", " -" },
66	{ UPLUS, "arith", " +" },
67	{ POWER, "arith", " **" },
68	{ PREINCR, "incrdecr", "++" },
69	{ POSTINCR, "incrdecr", "++" },
70	{ PREDECR, "incrdecr", "--" },
71	{ POSTDECR, "incrdecr", "--" },
72	{ CAT, "cat", " " },
73	{ PASTAT, "pastat", NULL },
74	{ PASTAT2, "dopa2", NULL },
75	{ MATCH, "matchop", " ~ " },
76	{ NOTMATCH, "matchop", " !~ " },
77	{ MATCHFCN, "matchop", "matchop" },
78	{ INTEST, "intest", "intest" },
79	{ PRINTF, "awkprintf", "printf" },
80	{ PRINT, "printstat", "print" },
81	{ CLOSE, "closefile", "closefile" },
82	{ DELETE, "awkdelete", "awkdelete" },
83	{ SPLIT, "split", "split" },
84	{ ASSIGN, "assign", " = " },
85	{ ADDEQ, "assign", " += " },
86	{ SUBEQ, "assign", " -= " },
87	{ MULTEQ, "assign", " *= " },
88	{ DIVEQ, "assign", " /= " },
89	{ MODEQ, "assign", " %= " },
90	{ POWEQ, "assign", " ^= " },
91	{ CONDEXPR, "condexpr", " ?: " },
92	{ IF, "ifstat", "if(" },
93	{ WHILE, "whilestat", "while(" },
94	{ FOR, "forstat", "for(" },
95	{ DO, "dostat", "do" },
96	{ IN, "instat", "instat" },
97	{ NEXT, "jump", "next" },
98	{ NEXTFILE, "jump", "nextfile" },
99	{ EXIT, "jump", "exit" },
100	{ BREAK, "jump", "break" },
101	{ CONTINUE, "jump", "continue" },
102	{ RETURN, "jump", "ret" },
103	{ BLTIN, "bltin", "bltin" },
104	{ CALL, "call", "call" },
105	{ ARG, "arg", "arg" },
106	{ VARNF, "getnf", "NF" },
107	{ GETLINE, "awkgetline", "getline" },
108	{ 0, "", "" },
109};
110
111#define SIZE	(LASTTOKEN - FIRSTTOKEN + 1)
112const char *table[SIZE];
113char *names[SIZE];
114
115int main(int argc, char *argv[])
116{
117	const struct xx *p;
118	int i, n, tok;
119	char c;
120	FILE *fp;
121	char buf[200], name[200], def[200];
122
123	printf("#include <stdio.h>\n");
124	printf("#include \"awk.h\"\n");
125	printf("#include \"ytab.h\"\n\n");
126
127	if (argc != 2) {
128		fprintf(stderr, "usage: maketab YTAB_H\n");
129		exit(1);
130	}
131	if ((fp = fopen(argv[1], "r")) == NULL) {
132		fprintf(stderr, "maketab can't open %s!\n", argv[1]);
133		exit(1);
134	}
135	printf("static const char * const printname[%d] = {\n", SIZE);
136	i = 0;
137	while (fgets(buf, sizeof buf, fp) != NULL) {
138		// 199 is sizeof(def) - 1
139		n = sscanf(buf, "%1c %199s %199s %d", &c, def, name, &tok);
140		if (n != 4 || c != '#' || strcmp(def, "define") != 0)
141			continue;	/* not a valid #define */
142		if (strcmp(name, "YYSTYPE_IS_DECLARED") == 0)
143			continue;
144		if (tok < FIRSTTOKEN || tok > LASTTOKEN) {
145			/* fprintf(stderr, "maketab: funny token %d %s ignored\n", tok, buf); */
146			continue;
147		}
148		names[tok-FIRSTTOKEN] = strdup(name);
149		if (names[tok-FIRSTTOKEN] == NULL) {
150			fprintf(stderr, "maketab out of space copying %s", name);
151			exit(1);
152		}
153		printf("\t\"%s\",\t/* %d */\n", name, tok);
154		i++;
155	}
156	printf("};\n\n");
157
158	for (p=proc; p->token!=0; p++)
159		table[p->token-FIRSTTOKEN] = p->name;
160	printf("\nCell *(*proctab[%d])(Node **, int) = {\n", SIZE);
161	for (i=0; i<SIZE; i++)
162		printf("\t%s,\t/* %s */\n",
163		    table[i] ? table[i] : "nullproc", names[i] ? names[i] : "");
164	printf("};\n\n");
165
166	printf("const char *tokname(int n)\n");	/* print a tokname() function */
167	printf("{\n");
168	printf("\tstatic char buf[100];\n\n");
169	printf("\tif (n < FIRSTTOKEN || n > LASTTOKEN) {\n");
170	printf("\t\tsnprintf(buf, sizeof(buf), \"token %%d\", n);\n");
171	printf("\t\treturn buf;\n");
172	printf("\t}\n");
173	printf("\treturn printname[n-FIRSTTOKEN];\n");
174	printf("}\n");
175	return 0;
176}
177