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/*
* Copyright (c) 1983, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef lint
static char sccsid[] = "@(#)parse.c 8.1 (Berkeley) 5/31/93";
#endif /* not lint */
#include "externs.h"
wordinit()
{
register struct wlist *w;
for (w = wlist; w->string; w++)
install(w);
}
hash(s)
register char *s;
{
register hashval = 0;
while (*s) {
hashval += *s++;
hashval *= HASHMUL;
hashval &= HASHMASK;
}
return hashval;
}
struct wlist *
lookup(s)
char *s;
{
register struct wlist *wp;
for (wp = hashtab[hash(s)]; wp != NULL; wp = wp->next)
if (*s == *wp->string && strcmp(s, wp->string) == 0)
return wp;
return NULL;
}
install(wp)
register struct wlist *wp;
{
int hashval;
if (lookup(wp->string) == NULL) {
hashval = hash(wp->string);
wp->next = hashtab[hashval];
hashtab[hashval] = wp;
} else
printf("Multiply defined %s.\n", wp->string);
}
parse()
{
register struct wlist *wp;
register n;
wordnumber = 0; /* for cypher */
for (n = 0; n <= wordcount; n++) {
if ((wp = lookup(words[n])) == NULL) {
wordvalue[n] = -1;
wordtype[n] = -1;
} else {
wordvalue[n] = wp -> value;
wordtype[n] = wp -> article;
}
}
}
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