1 /* 2 * Copyright (c) 1983, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * %sccs.include.redist.c% 6 */ 7 8 #ifndef lint 9 static char sccsid[] = "@(#)parse.c 8.2 (Berkeley) 04/28/95"; 10 #endif /* not lint */ 11 12 #include "extern.h" 13 14 wordinit() 15 { 16 register struct wlist *w; 17 18 for (w = wlist; w->string; w++) 19 install(w); 20 } 21 22 hash(s) 23 register char *s; 24 { 25 register hashval = 0; 26 27 while (*s) { 28 hashval += *s++; 29 hashval *= HASHMUL; 30 hashval &= HASHMASK; 31 } 32 return hashval; 33 } 34 35 struct wlist * 36 lookup(s) 37 char *s; 38 { 39 register struct wlist *wp; 40 41 for (wp = hashtab[hash(s)]; wp != NULL; wp = wp->next) 42 if (*s == *wp->string && strcmp(s, wp->string) == 0) 43 return wp; 44 return NULL; 45 } 46 47 install(wp) 48 register struct wlist *wp; 49 { 50 int hashval; 51 52 if (lookup(wp->string) == NULL) { 53 hashval = hash(wp->string); 54 wp->next = hashtab[hashval]; 55 hashtab[hashval] = wp; 56 } else 57 printf("Multiply defined %s.\n", wp->string); 58 } 59 60 parse() 61 { 62 register struct wlist *wp; 63 register n; 64 65 wordnumber = 0; /* for cypher */ 66 for (n = 0; n <= wordcount; n++) { 67 if ((wp = lookup(words[n])) == NULL) { 68 wordvalue[n] = -1; 69 wordtype[n] = -1; 70 } else { 71 wordvalue[n] = wp -> value; 72 wordtype[n] = wp -> article; 73 } 74 } 75 } 76