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616915dd | 1 | /* |
2 | ** LCLint - annotation-assisted static program checker | |
28bf4b0b | 3 | ** Copyright (C) 1994-2001 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 | ** | |
20 | ** For information on lclint: lclint-request@cs.virginia.edu | |
21 | ** To report a bug: lclint-bug@cs.virginia.edu | |
22 | ** For more information: http://lclint.cs.virginia.edu | |
23 | */ | |
24 | /* | |
25 | ** typeIdSet.c | |
26 | */ | |
27 | ||
28 | # include "lclintMacros.nf" | |
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 | ||
85 | static /*@unused@*/ void tistable_printOut (void) | |
86 | { | |
87 | int i; | |
88 | ||
89 | /* | |
90 | ** Don't dump 0th entry | |
91 | */ | |
92 | ||
93 | for (i = 1; i < tistableentries; i++) | |
94 | { | |
95 | cstring s = usymIdSet_unparse (tistable[i]); | |
96 | ||
97 | fprintf (g_msgstream, "%d: %s\n", i, cstring_toCharsSafe (s)); | |
98 | cstring_free (s); | |
99 | } | |
100 | } | |
101 | ||
102 | void typeIdSet_loadTable (FILE *fin) | |
103 | { | |
104 | char *s = mstring_create (MAX_DUMP_LINE_LENGTH); | |
105 | char *os = s; | |
106 | ||
107 | llassert (tistableentries == 1); | |
108 | ||
28bf4b0b | 109 | s = reader_readLine (fin, s, MAX_DUMP_LINE_LENGTH); |
616915dd | 110 | |
111 | while (s != NULL && *s != ';') | |
112 | { | |
113 | usymIdSet u = usymIdSet_undump (&s); | |
114 | ||
115 | llassert (*s == '\0' || *s == '\n'); | |
116 | ||
117 | tistable_addDirectEntry (u); | |
28bf4b0b | 118 | s = reader_readLine (fin, os, MAX_DUMP_LINE_LENGTH); |
616915dd | 119 | } |
28bf4b0b | 120 | |
121 | /*@i32 free os? @*/ | |
616915dd | 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); | |
202 | ||
203 | return usymIdSet_member (u, el); | |
204 | } | |
205 | ||
206 | bool typeIdSet_isEmpty (typeIdSet t) | |
207 | { | |
208 | return (t == 0); | |
209 | } | |
210 | ||
211 | typeIdSet typeIdSet_single (typeId t) | |
212 | { | |
213 | return (tistable_addEntry (usymIdSet_single (t))); | |
214 | } | |
215 | ||
216 | typeIdSet typeIdSet_singleOpt (typeId t) | |
217 | { | |
218 | if (typeId_isValid (t)) | |
219 | { | |
220 | return (tistable_addEntry (usymIdSet_single (t))); | |
221 | } | |
222 | else | |
223 | { | |
224 | return typeIdSet_empty; | |
225 | } | |
226 | } | |
227 | ||
228 | typeIdSet typeIdSet_insert (typeIdSet t, typeId el) | |
229 | { | |
230 | usymIdSet u = tistable_fetch (t); | |
231 | ||
232 | if (usymIdSet_member (u, el)) | |
233 | { | |
234 | return t; | |
235 | } | |
236 | else | |
237 | { | |
238 | return (tistable_addEntry (usymIdSet_add (u, el))); | |
239 | } | |
240 | } | |
241 | ||
242 | typeIdSet typeIdSet_removeFresh (typeIdSet t, typeId el) | |
243 | { | |
244 | return (tistable_addEntry (usymIdSet_removeFresh (tistable_fetch (t), el))); | |
245 | } | |
246 | ||
247 | cstring typeIdSet_unparse (typeIdSet t) | |
248 | { | |
249 | return (usymIdSet_unparse (tistable_fetch (t))); | |
250 | } | |
251 | ||
252 | int typeIdSet_compare (typeIdSet t1, typeIdSet t2) | |
253 | { | |
254 | return (int_compare (t1, t2)); | |
255 | } | |
256 | ||
257 | typeIdSet typeIdSet_subtract (typeIdSet s, typeIdSet t) | |
258 | { | |
259 | if (typeIdSet_isEmpty (t)) | |
260 | { | |
261 | return s; | |
262 | } | |
263 | else | |
264 | { | |
265 | return (tistable_addEntry (usymIdSet_subtract (tistable_fetch (s), | |
266 | tistable_fetch (t)))); | |
267 | } | |
268 | } | |
269 | ||
270 | cstring typeIdSet_dump (typeIdSet t) | |
271 | { | |
272 | return (message ("%d", t)); | |
273 | } | |
274 | ||
275 | typeIdSet typeIdSet_undump (char **s) | |
276 | { | |
277 | int i; | |
278 | ||
279 | ||
28bf4b0b | 280 | i = reader_getInt (s); |
616915dd | 281 | |
282 | llassert (i >= 0 && i < tistableentries); | |
283 | return (typeIdSet) i; | |
284 | } | |
285 | ||
286 | typeIdSet typeIdSet_union (typeIdSet t1, typeIdSet t2) | |
287 | { | |
288 | if (t1 == typeIdSet_undefined) | |
289 | { | |
290 | return t2; | |
291 | } | |
292 | else if (t2 == typeIdSet_undefined) | |
293 | { | |
294 | return t1; | |
295 | } | |
296 | else | |
297 | { | |
298 | return (tistable_addEntry (usymIdSet_newUnion (tistable_fetch (t1), | |
299 | tistable_fetch (t2)))); | |
300 | } | |
301 | } |