maketab.c revision 1.13 
1/*	$OpenBSD: maketab.c,v 1.13 2020/06/10 21:01:13 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	for (i = SIZE; --i >= 0; )
127		names[i] = "";
128
129	if ((fp = fopen("ytab.h", "r")) == NULL) {
130		fprintf(stderr, "maketab: can't open ytab.h!\n");
131		exit(1);
132	}
133	printf("static char *printname[%d] = {\n", SIZE);
134	i = 0;
135	while (fgets(buf, sizeof buf, fp) != NULL) {
136		n = sscanf(buf, "%1c %s %s %d", &c, def, name, &tok);
137		if (n != 4 || c != '#' || strcmp(def, "define") != 0)
138			continue;	/* not a valid #define */
139		if (strcmp(name, "YYSTYPE_IS_DECLARED") == 0)
140			continue;
141		if (tok < FIRSTTOKEN || tok > LASTTOKEN) {
142			/* fprintf(stderr, "maketab: funny token %d %s ignored\n", tok, buf); */
143			continue;
144		}
145		names[tok-FIRSTTOKEN] = (char *) strdup(name);
146		if (names[tok-FIRSTTOKEN] == NULL) {
147			fprintf(stderr, "maketab: out of memory\n");
148			exit(1);
149		}
150		printf("\t(char *) \"%s\",\t/* %d */\n", name, tok);
151		i++;
152	}
153	printf("};\n\n");
154
155	for (p=proc; p->token!=0; p++)
156		table[p->token-FIRSTTOKEN] = p->name;
157	printf("\nCell *(*proctab[%d])(Node **, int) = {\n", SIZE);
158	for (i=0; i<SIZE; i++)
159		if (table[i]==0)
160			printf("\tnullproc,\t/* %s */\n", names[i]);
161		else
162			printf("\t%s,\t/* %s */\n", table[i], names[i]);
163	printf("};\n\n");
164
165	printf("char *tokname(int n)\n");	/* print a tokname() function */
166	printf("{\n");
167	printf("	static char buf[100];\n\n");
168	printf("	if (n < FIRSTTOKEN || n > LASTTOKEN) {\n");
169	printf("		snprintf(buf, sizeof buf, \"token %%d\", n);\n");
170	printf("		return buf;\n");
171	printf("	}\n");
172	printf("	return printname[n-FIRSTTOKEN];\n");
173	printf("}\n");
174	return 0;
175}
176