maketab.c revision 1.3 
1/*	$OpenBSD: maketab.c,v 1.3 1999/04/18 17:06:30 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	char *name;
41	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, "getline", "getline" },
107	{ 0, "", "" },
108};
109
110#define SIZE	(LASTTOKEN - FIRSTTOKEN + 1)
111char *table[SIZE];
112char *names[SIZE];
113
114int main(int argc, char *argv[])
115{
116	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 (c != '#' || (n != 4 && strcmp(def,"define") != 0))	/* not a valid #define */
137			continue;
138		if (tok < FIRSTTOKEN || tok > LASTTOKEN) {
139			fprintf(stderr, "maketab funny token %d %s\n", tok, buf);
140			exit(1);
141		}
142		names[tok-FIRSTTOKEN] = (char *) malloc(strlen(name)+1);
143		strcpy(names[tok-FIRSTTOKEN], name);
144		printf("\t(char *) \"%s\",\t/* %d */\n", name, tok);
145		i++;
146	}
147	printf("};\n\n");
148
149	for (p=proc; p->token!=0; p++)
150		table[p->token-FIRSTTOKEN] = p->name;
151	printf("\nCell *(*proctab[%d])(Node **, int) = {\n", SIZE);
152	for (i=0; i<SIZE; i++)
153		if (table[i]==0)
154			printf("\tnullproc,\t/* %s */\n", names[i]);
155		else
156			printf("\t%s,\t/* %s */\n", table[i], names[i]);
157	printf("};\n\n");
158
159	printf("char *tokname(int n)\n");	/* print a tokname() function */
160	printf("{\n");
161	printf("	static char buf[100];\n\n");
162	printf("	if (n < FIRSTTOKEN || n > LASTTOKEN) {\n");
163	printf("		sprintf(buf, \"token %%d\", n);\n");
164	printf("		return buf;\n");
165	printf("	}\n");
166	printf("	return printname[n-FIRSTTOKEN];\n");
167	printf("}\n");
168	return 0;
169}
170