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616915dd | 1 | /* |
11db3170 | 2 | ** Splint - annotation-assisted static program checker |
c59f5181 | 3 | ** Copyright (C) 1994-2003 University of Virginia, |
616915dd | 4 | ** Massachusetts Institute of Technology |
5 | ** | |
6 | ** This program is free software; you can redistribute it and/or modify it | |
7 | ** under the terms of the GNU General Public License as published by the | |
8 | ** Free Software Foundation; either version 2 of the License, or (at your | |
9 | ** option) any later version. | |
10 | ** | |
11 | ** This program is distributed in the hope that it will be useful, but | |
12 | ** WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | ** General Public License for more details. | |
15 | ** | |
16 | ** The GNU General Public License is available from http://www.gnu.org/ or | |
17 | ** the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, | |
18 | ** MA 02111-1307, USA. | |
19 | ** | |
155af98d | 20 | ** For information on splint: info@splint.org |
21 | ** To report a bug: splint-bug@splint.org | |
11db3170 | 22 | ** For more information: http://www.splint.org |
616915dd | 23 | */ |
24 | /* | |
25 | ** typeIdSet.c | |
26 | */ | |
27 | ||
1b8ae690 | 28 | # include "splintMacros.nf" |
616915dd | 29 | # include "basic.h" |
30 | ||
31 | /*@constant int TISTABLEBASESIZE;@*/ | |
32 | # define TISTABLEBASESIZE LARGEBASESIZE | |
33 | ||
34 | static int tistableentries = 0; | |
35 | static int tistablefree = 0; | |
36 | typedef /*@only@*/ usymIdSet o_usymIdSet; | |
37 | static /*@only@*/ o_usymIdSet *tistable; | |
38 | static void tistable_addDirectEntry (/*@only@*/ usymIdSet p_s) | |
39 | /*@modifies tistable, tistableentries, tistablefree@*/; | |
40 | ||
41 | void typeIdSet_initMod (void) | |
42 | /*@globals undef tistable;@*/ | |
43 | /*@modifies tistable, tistablefree;@*/ | |
44 | { | |
45 | llassert (tistableentries == 0 && tistablefree == 0); | |
46 | ||
47 | tistablefree = TISTABLEBASESIZE; | |
48 | tistable = (usymIdSet *) dmalloc (sizeof (tistable) * tistablefree); | |
49 | tistable[0] = usymIdSet_undefined; | |
50 | tistableentries = 1; | |
51 | tistablefree--; | |
52 | } | |
53 | ||
54 | void typeIdSet_destroyMod (void) | |
55 | /*@globals killed tistable, tistableentries@*/ | |
56 | { | |
57 | int i; | |
58 | ||
59 | for (i = 0; i < tistableentries; i++) | |
60 | { | |
61 | usymIdSet_free (tistable[i]); | |
62 | } | |
63 | ||
64 | sfree (tistable); | |
65 | tistableentries = 0; | |
66 | } | |
67 | ||
68 | void typeIdSet_dumpTable (FILE *fout) | |
69 | { | |
70 | int i; | |
71 | ||
72 | /* | |
73 | ** Don't dump 0th entry | |
74 | */ | |
75 | ||
76 | for (i = 1; i < tistableentries; i++) | |
77 | { | |
78 | cstring s = usymIdSet_dump (tistable[i]); | |
79 | ||
80 | fprintf (fout, "%s\n", cstring_toCharsSafe (s)); | |
81 | cstring_free (s); | |
82 | } | |
83 | } | |
84 | ||
8250fa4a | 85 | # if 0 |
616915dd | 86 | static /*@unused@*/ void tistable_printOut (void) |
87 | { | |
88 | int i; | |
89 | ||
90 | /* | |
91 | ** Don't dump 0th entry | |
92 | */ | |
93 | ||
94 | for (i = 1; i < tistableentries; i++) | |
95 | { | |
96 | cstring s = usymIdSet_unparse (tistable[i]); | |
97 | ||
80489f0a | 98 | fprintf (g_warningstream, "%d: %s\n", i, cstring_toCharsSafe (s)); |
616915dd | 99 | cstring_free (s); |
100 | } | |
101 | } | |
8250fa4a | 102 | # endif |
616915dd | 103 | |
104 | void typeIdSet_loadTable (FILE *fin) | |
105 | { | |
106 | char *s = mstring_create (MAX_DUMP_LINE_LENGTH); | |
107 | char *os = s; | |
108 | ||
109 | llassert (tistableentries == 1); | |
110 | ||
28bf4b0b | 111 | s = reader_readLine (fin, s, MAX_DUMP_LINE_LENGTH); |
616915dd | 112 | |
113 | while (s != NULL && *s != ';') | |
114 | { | |
115 | usymIdSet u = usymIdSet_undump (&s); | |
116 | ||
117 | llassert (*s == '\0' || *s == '\n'); | |
118 | ||
119 | tistable_addDirectEntry (u); | |
28bf4b0b | 120 | s = reader_readLine (fin, os, MAX_DUMP_LINE_LENGTH); |
616915dd | 121 | } |
122 | } | |
123 | ||
124 | static void tistable_grow (void) | |
125 | { | |
126 | o_usymIdSet *oldtable = tistable; | |
127 | int newsize = tistableentries + TISTABLEBASESIZE; | |
128 | int i; | |
129 | ||
130 | llassert (tistablefree == 0); | |
131 | ||
132 | tistable = (usymIdSet *) dmalloc (sizeof (tistable) * newsize); | |
133 | ||
134 | for (i = 0; i < tistableentries; i++) | |
135 | { | |
136 | tistable[i] = oldtable[i]; | |
137 | } | |
138 | ||
139 | tistablefree = TISTABLEBASESIZE; | |
140 | sfree (oldtable); | |
141 | } | |
142 | ||
143 | static void tistable_addDirectEntry (/*@only@*/ usymIdSet s) | |
144 | { | |
145 | if (tistablefree == 0) | |
146 | { | |
147 | tistable_grow (); | |
148 | } | |
149 | ||
150 | tistable[tistableentries] = s; | |
151 | tistableentries++; | |
152 | tistablefree--; | |
153 | } | |
154 | ||
155 | static int tistable_addEntry (/*@only@*/ usymIdSet s) | |
156 | { | |
157 | int i; | |
158 | ||
159 | ||
160 | for (i = 0; i < tistableentries; i++) | |
161 | { | |
162 | if (usymIdSet_compare (tistable[i], s) == 0) | |
163 | { | |
164 | /*@access usymIdSet@*/ | |
165 | llassert (i == 0 || s != tistable[i]); | |
166 | /*@noaccess usymIdSet@*/ | |
167 | ||
168 | usymIdSet_free (s); | |
169 | return i; | |
170 | } | |
171 | } | |
172 | ||
173 | tistable_addDirectEntry (s); | |
174 | return (tistableentries - 1); | |
175 | } | |
176 | ||
177 | static /*@observer@*/ usymIdSet tistable_fetch (typeIdSet t) | |
178 | /*@globals tistableentries, tistable@*/ | |
179 | /*@modifies nothing;@*/ | |
180 | { | |
181 | llassert (t >= 0 && t < tistableentries); | |
182 | ||
183 | return tistable[t]; | |
184 | } | |
185 | ||
186 | typeIdSet typeIdSet_emptySet (void) | |
187 | { | |
188 | if (tistableentries == 0) | |
189 | { | |
190 | int val = tistable_addEntry (usymIdSet_new ()); | |
191 | ||
192 | llassert (val == 0); | |
193 | } | |
194 | ||
195 | llassert (usymIdSet_isUndefined (tistable[0])); | |
196 | return 0; | |
197 | } | |
198 | ||
199 | bool typeIdSet_member (typeIdSet t, typeId el) | |
200 | { | |
201 | usymIdSet u = tistable_fetch (t); | |
b73d1009 | 202 | return usymIdSet_member (u, typeId_toUsymId (el)); |
616915dd | 203 | } |
204 | ||
205 | bool typeIdSet_isEmpty (typeIdSet t) | |
206 | { | |
207 | return (t == 0); | |
208 | } | |
209 | ||
210 | typeIdSet typeIdSet_single (typeId t) | |
211 | { | |
b73d1009 | 212 | return (tistable_addEntry (usymIdSet_single (typeId_toUsymId (t)))); |
616915dd | 213 | } |
214 | ||
215 | typeIdSet typeIdSet_singleOpt (typeId t) | |
216 | { | |
217 | if (typeId_isValid (t)) | |
218 | { | |
b73d1009 | 219 | return (tistable_addEntry (usymIdSet_single (typeId_toUsymId (t)))); |
616915dd | 220 | } |
221 | else | |
222 | { | |
223 | return typeIdSet_empty; | |
224 | } | |
225 | } | |
226 | ||
227 | typeIdSet typeIdSet_insert (typeIdSet t, typeId el) | |
228 | { | |
229 | usymIdSet u = tistable_fetch (t); | |
230 | ||
b73d1009 | 231 | if (usymIdSet_member (u, typeId_toUsymId (el))) |
616915dd | 232 | { |
233 | return t; | |
234 | } | |
235 | else | |
236 | { | |
b73d1009 | 237 | return (tistable_addEntry (usymIdSet_add (u, typeId_toUsymId (el)))); |
616915dd | 238 | } |
239 | } | |
240 | ||
241 | typeIdSet typeIdSet_removeFresh (typeIdSet t, typeId el) | |
242 | { | |
b73d1009 | 243 | return (tistable_addEntry (usymIdSet_removeFresh (tistable_fetch (t), typeId_toUsymId (el)))); |
616915dd | 244 | } |
245 | ||
246 | cstring typeIdSet_unparse (typeIdSet t) | |
247 | { | |
248 | return (usymIdSet_unparse (tistable_fetch (t))); | |
249 | } | |
250 | ||
251 | int typeIdSet_compare (typeIdSet t1, typeIdSet t2) | |
252 | { | |
253 | return (int_compare (t1, t2)); | |
254 | } | |
255 | ||
256 | typeIdSet typeIdSet_subtract (typeIdSet s, typeIdSet t) | |
257 | { | |
258 | if (typeIdSet_isEmpty (t)) | |
259 | { | |
260 | return s; | |
261 | } | |
262 | else | |
263 | { | |
264 | return (tistable_addEntry (usymIdSet_subtract (tistable_fetch (s), | |
265 | tistable_fetch (t)))); | |
266 | } | |
267 | } | |
268 | ||
269 | cstring typeIdSet_dump (typeIdSet t) | |
270 | { | |
271 | return (message ("%d", t)); | |
272 | } | |
273 | ||
274 | typeIdSet typeIdSet_undump (char **s) | |
275 | { | |
276 | int i; | |
277 | ||
278 | ||
28bf4b0b | 279 | i = reader_getInt (s); |
616915dd | 280 | |
281 | llassert (i >= 0 && i < tistableentries); | |
282 | return (typeIdSet) i; | |
283 | } | |
284 | ||
285 | typeIdSet typeIdSet_union (typeIdSet t1, typeIdSet t2) | |
286 | { | |
287 | if (t1 == typeIdSet_undefined) | |
288 | { | |
289 | return t2; | |
290 | } | |
291 | else if (t2 == typeIdSet_undefined) | |
292 | { | |
293 | return t1; | |
294 | } | |
295 | else | |
296 | { | |
297 | return (tistable_addEntry (usymIdSet_newUnion (tistable_fetch (t1), | |
298 | tistable_fetch (t2)))); | |
299 | } | |
300 | } |