1 /* 2 * Copyright (c) 1983 Regents of the University of California. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms are permitted 6 * provided that the above copyright notice and this paragraph are 7 * duplicated in all such forms and that any documentation, 8 * advertising materials, and other materials related to such 9 * distribution and use acknowledge that the software was developed 10 * by the University of California, Berkeley. The name of the 11 * University may not be used to endorse or promote products derived 12 * from this software without specific prior written permission. 13 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR 14 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED 15 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. 16 */ 17 18 #ifndef lint 19 static char sccsid[] = "@(#)parse.c 5.2 (Berkeley) 06/19/88"; 20 #endif /* not lint */ 21 22 #include "externs.h" 23 24 wordinit() 25 { 26 register struct wlist *w; 27 28 for (w = wlist; w->string; w++) 29 install(w); 30 } 31 32 hash(s) 33 register char *s; 34 { 35 register hashval = 0; 36 37 while (*s) { 38 hashval += *s++; 39 hashval *= HASHMUL; 40 hashval &= HASHMASK; 41 } 42 return hashval; 43 } 44 45 struct wlist * 46 lookup(s) 47 char *s; 48 { 49 register struct wlist *wp; 50 51 for (wp = hashtab[hash(s)]; wp != NULL; wp = wp->next) 52 if (*s == *wp->string && strcmp(s, wp->string) == 0) 53 return wp; 54 return NULL; 55 } 56 57 install(wp) 58 register struct wlist *wp; 59 { 60 int hashval; 61 62 if (lookup(wp->string) == NULL) { 63 hashval = hash(wp->string); 64 wp->next = hashtab[hashval]; 65 hashtab[hashval] = wp; 66 } else 67 printf("Multiply defined %s.\n", wp->string); 68 } 69 70 parse() 71 { 72 register struct wlist *wp; 73 register n; 74 75 wordnumber = 0; /* for cypher */ 76 for (n = 0; n <= wordcount; n++) { 77 if ((wp = lookup(words[n])) == NULL) { 78 wordvalue[n] = -1; 79 wordtype[n] = -1; 80 } else { 81 wordvalue[n] = wp -> value; 82 wordtype[n] = wp -> article; 83 } 84 } 85 } 86