Commit | Line | Data |
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fdc7d56f EW |
1 | /* |
2 | * Copyright (c) 1983 Regents of the University of California, | |
3 | * All rights reserved. Redistribution permitted subject to | |
4 | * the terms of the Berkeley Software License Agreement. | |
5 | */ | |
6 | ||
4560ad02 | 7 | #ifndef lint |
fdc7d56f | 8 | static char sccsid[] = "@(#)parse.c 1.2 %G%"; |
4560ad02 EW |
9 | #endif |
10 | ||
11 | #include "externs.h" | |
12 | ||
13 | wordinit() | |
14 | { | |
15 | register struct wlist *w; | |
16 | ||
17 | for (w = wlist; w->string; w++) | |
18 | install(w); | |
19 | } | |
20 | ||
21 | hash(s) | |
22 | register char *s; | |
23 | { | |
24 | register hashval = 0; | |
25 | ||
26 | while (*s) { | |
27 | hashval += *s++; | |
28 | hashval *= HASHMUL; | |
29 | hashval &= HASHMASK; | |
30 | } | |
31 | return hashval; | |
32 | } | |
33 | ||
34 | struct wlist * | |
35 | lookup(s) | |
36 | char *s; | |
37 | { | |
38 | register struct wlist *wp; | |
39 | ||
40 | for (wp = hashtab[hash(s)]; wp != NULL; wp = wp->next) | |
41 | if (*s == *wp->string && strcmp(s, wp->string) == 0) | |
42 | return wp; | |
43 | return NULL; | |
44 | } | |
45 | ||
46 | install(wp) | |
47 | register struct wlist *wp; | |
48 | { | |
49 | int hashval; | |
50 | ||
51 | if (lookup(wp->string) == NULL) { | |
52 | hashval = hash(wp->string); | |
53 | wp->next = hashtab[hashval]; | |
54 | hashtab[hashval] = wp; | |
55 | } else | |
56 | printf("Multiply defined %s.\n", wp->string); | |
57 | } | |
58 | ||
59 | parse() | |
60 | { | |
61 | register struct wlist *wp; | |
62 | register n; | |
63 | ||
64 | wordnumber = 0; /* for cypher */ | |
65 | for (n = 0; n <= wordcount; n++) { | |
66 | if ((wp = lookup(words[n])) == NULL) { | |
67 | wordvalue[n] = -1; | |
68 | wordtype[n] = -1; | |
69 | } else { | |
70 | wordvalue[n] = wp -> value; | |
71 | wordtype[n] = wp -> article; | |
72 | } | |
73 | } | |
74 | } |