2 * Copyright (c) 1989 The Regents of the University of California.
5 * This code is derived from software contributed to Berkeley by
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by the University of
19 * California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
39 static char sccsid[] = "@(#)symtab.c 5.3 (Berkeley) 6/1/90";
43 #include <sys/cdefs.h>
44 __FBSDID("$FreeBSD$");
50 /* TABLE_SIZE is the number of entries in the symbol table. */
51 /* TABLE_SIZE must be a power of two. */
53 #define TABLE_SIZE 1024
55 static int hash(const char *);
57 bucket **symbol_table;
69 assert(name && *name);
73 k = (31*k + c) & (TABLE_SIZE - 1);
86 bp = (bucket *) MALLOC(sizeof(bucket));
87 if (bp == 0) no_space();
90 bp->name = MALLOC(strlen(name) + 1);
91 if (bp->name == 0) no_space();
93 bp->value = UNDEFINED;
99 if (bp->name == 0) no_space();
100 strcpy(bp->name, name);
112 bpp = symbol_table + hash(name);
117 if (strcmp(name, bp->name) == 0) return (bp);
122 *bpp = bp = make_bucket(name);
123 last_symbol->next = bp;
131 create_symbol_table()
136 symbol_table = (bucket **) MALLOC(TABLE_SIZE*sizeof(bucket *));
137 if (symbol_table == 0) no_space();
138 for (i = 0; i < TABLE_SIZE; i++)
141 bp = make_bucket("error");
147 symbol_table[hash("error")] = bp;
164 for (p = first_symbol; p; p = q)