maketab.c revision 1.11 
1/*	$OpenBSD: maketab.c,v 1.11 2010/06/13 17:58:19 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	{ POWER, "arith", " **" },
67	{ PREINCR, "incrdecr", "++" },
68	{ POSTINCR, "incrdecr", "++" },
69	{ PREDECR, "incrdecr", "--" },
70	{ POSTDECR, "incrdecr", "--" },
71	{ CAT, "cat", " " },
72	{ PASTAT, "pastat", NULL },
73	{ PASTAT2, "dopa2", NULL },
74	{ MATCH, "matchop", " ~ " },
75	{ NOTMATCH, "matchop", " !~ " },
76	{ MATCHFCN, "matchop", "matchop" },
77	{ INTEST, "intest", "intest" },
78	{ PRINTF, "awkprintf", "printf" },
79	{ PRINT, "printstat", "print" },
80	{ CLOSE, "closefile", "closefile" },
81	{ DELETE, "awkdelete", "awkdelete" },
82	{ SPLIT, "split", "split" },
83	{ ASSIGN, "assign", " = " },
84	{ ADDEQ, "assign", " += " },
85	{ SUBEQ, "assign", " -= " },
86	{ MULTEQ, "assign", " *= " },
87	{ DIVEQ, "assign", " /= " },
88	{ MODEQ, "assign", " %= " },
89	{ POWEQ, "assign", " ^= " },
90	{ CONDEXPR, "condexpr", " ?: " },
91	{ IF, "ifstat", "if(" },
92	{ WHILE, "whilestat", "while(" },
93	{ FOR, "forstat", "for(" },
94	{ DO, "dostat", "do" },
95	{ IN, "instat", "instat" },
96	{ NEXT, "jump", "next" },
97	{ NEXTFILE, "jump", "nextfile" },
98	{ EXIT, "jump", "exit" },
99	{ BREAK, "jump", "break" },
100	{ CONTINUE, "jump", "continue" },
101	{ RETURN, "jump", "ret" },
102	{ BLTIN, "bltin", "bltin" },
103	{ CALL, "call", "call" },
104	{ ARG, "arg", "arg" },
105	{ VARNF, "getnf", "NF" },
106	{ GETLINE, "awkgetline", "getline" },
107	{ 0, "", "" },
108};
109
110#define SIZE	(LASTTOKEN - FIRSTTOKEN + 1)
111const char *table[SIZE];
112char *names[SIZE];
113
114int main(int argc, char *argv[])
115{
116	const struct xx *p;
117	int i, n, tok;
118	char c;
119	FILE *fp;
120	char buf[200], name[200], def[200];
121
122	printf("#include <stdio.h>\n");
123	printf("#include \"awk.h\"\n");
124	printf("#include \"ytab.h\"\n\n");
125	for (i = SIZE; --i >= 0; )
126		names[i] = "";
127
128	if ((fp = fopen("ytab.h", "r")) == NULL) {
129		fprintf(stderr, "maketab: can't open ytab.h!\n");
130		exit(1);
131	}
132	printf("static char *printname[%d] = {\n", SIZE);
133	i = 0;
134	while (fgets(buf, sizeof buf, fp) != NULL) {
135		n = sscanf(buf, "%1c %s %s %d", &c, def, name, &tok);
136		if (n != 4 || c != '#' || strcmp(def, "define") != 0)
137			continue;	/* not a valid #define */
138		if (tok < FIRSTTOKEN || tok > LASTTOKEN) {
139			/* fprintf(stderr, "maketab: funny token %d %s ignored\n", tok, buf); */
140			continue;
141		}
142		names[tok-FIRSTTOKEN] = (char *) strdup(name);
143		if (names[tok-FIRSTTOKEN] == NULL) {
144			fprintf(stderr, "maketab: out of memory\n");
145			exit(1);
146		}
147		printf("\t(char *) \"%s\",\t/* %d */\n", name, tok);
148		i++;
149	}
150	printf("};\n\n");
151
152	for (p=proc; p->token!=0; p++)
153		table[p->token-FIRSTTOKEN] = p->name;
154	printf("\nCell *(*proctab[%d])(Node **, int) = {\n", SIZE);
155	for (i=0; i<SIZE; i++)
156		if (table[i]==0)
157			printf("\tnullproc,\t/* %s */\n", names[i]);
158		else
159			printf("\t%s,\t/* %s */\n", table[i], names[i]);
160	printf("};\n\n");
161
162	printf("char *tokname(int n)\n");	/* print a tokname() function */
163	printf("{\n");
164	printf("	static char buf[100];\n\n");
165	printf("	if (n < FIRSTTOKEN || n > LASTTOKEN) {\n");
166	printf("		snprintf(buf, sizeof buf, \"token %%d\", n);\n");
167	printf("		return buf;\n");
168	printf("	}\n");
169	printf("	return printname[n-FIRSTTOKEN];\n");
170	printf("}\n");
171	return 0;
172}
173