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885824d3 | 1 | /* |
2 | ** LCLint - annotation-assisted static program checker | |
3 | ** Copyright (C) 1994-2000 University of Virginia, | |
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 | ||
109 | s = fgets (s, MAX_DUMP_LINE_LENGTH, fin); | |
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); | |
118 | s = fgets (os, MAX_DUMP_LINE_LENGTH, fin); | |
119 | } | |
120 | } | |
121 | ||
122 | static void tistable_grow (void) | |
123 | { | |
124 | o_usymIdSet *oldtable = tistable; | |
125 | int newsize = tistableentries + TISTABLEBASESIZE; | |
126 | int i; | |
127 | ||
128 | llassert (tistablefree == 0); | |
129 | ||
130 | tistable = (usymIdSet *) dmalloc (sizeof (tistable) * newsize); | |
131 | ||
132 | for (i = 0; i < tistableentries; i++) | |
133 | { | |
134 | tistable[i] = oldtable[i]; | |
135 | } | |
136 | ||
137 | tistablefree = TISTABLEBASESIZE; | |
138 | sfree (oldtable); | |
139 | } | |
140 | ||
141 | static void tistable_addDirectEntry (/*@only@*/ usymIdSet s) | |
142 | { | |
143 | if (tistablefree == 0) | |
144 | { | |
145 | tistable_grow (); | |
146 | } | |
147 | ||
148 | tistable[tistableentries] = s; | |
149 | tistableentries++; | |
150 | tistablefree--; | |
151 | } | |
152 | ||
153 | static int tistable_addEntry (/*@only@*/ usymIdSet s) | |
154 | { | |
155 | int i; | |
156 | ||
157 | ||
158 | for (i = 0; i < tistableentries; i++) | |
159 | { | |
160 | if (usymIdSet_compare (tistable[i], s) == 0) | |
161 | { | |
162 | /*@access usymIdSet@*/ | |
163 | llassert (i == 0 || s != tistable[i]); | |
164 | /*@noaccess usymIdSet@*/ | |
165 | ||
166 | usymIdSet_free (s); | |
167 | return i; | |
168 | } | |
169 | } | |
170 | ||
171 | tistable_addDirectEntry (s); | |
172 | return (tistableentries - 1); | |
173 | } | |
174 | ||
175 | static /*@observer@*/ usymIdSet tistable_fetch (typeIdSet t) | |
176 | /*@globals tistableentries, tistable@*/ | |
177 | /*@modifies nothing;@*/ | |
178 | { | |
179 | llassert (t >= 0 && t < tistableentries); | |
180 | ||
181 | return tistable[t]; | |
182 | } | |
183 | ||
184 | typeIdSet typeIdSet_emptySet (void) | |
185 | { | |
186 | if (tistableentries == 0) | |
187 | { | |
188 | int val = tistable_addEntry (usymIdSet_new ()); | |
189 | ||
190 | llassert (val == 0); | |
191 | } | |
192 | ||
193 | llassert (usymIdSet_isUndefined (tistable[0])); | |
194 | return 0; | |
195 | } | |
196 | ||
197 | bool typeIdSet_member (typeIdSet t, typeId el) | |
198 | { | |
199 | usymIdSet u = tistable_fetch (t); | |
200 | ||
201 | return usymIdSet_member (u, el); | |
202 | } | |
203 | ||
204 | bool typeIdSet_isEmpty (typeIdSet t) | |
205 | { | |
206 | return (t == 0); | |
207 | } | |
208 | ||
209 | typeIdSet typeIdSet_single (typeId t) | |
210 | { | |
211 | return (tistable_addEntry (usymIdSet_single (t))); | |
212 | } | |
213 | ||
214 | typeIdSet typeIdSet_singleOpt (typeId t) | |
215 | { | |
216 | if (typeId_isValid (t)) | |
217 | { | |
218 | return (tistable_addEntry (usymIdSet_single (t))); | |
219 | } | |
220 | else | |
221 | { | |
222 | return typeIdSet_empty; | |
223 | } | |
224 | } | |
225 | ||
226 | typeIdSet typeIdSet_insert (typeIdSet t, typeId el) | |
227 | { | |
228 | usymIdSet u = tistable_fetch (t); | |
229 | ||
230 | if (usymIdSet_member (u, el)) | |
231 | { | |
232 | return t; | |
233 | } | |
234 | else | |
235 | { | |
236 | return (tistable_addEntry (usymIdSet_add (u, el))); | |
237 | } | |
238 | } | |
239 | ||
240 | typeIdSet typeIdSet_removeFresh (typeIdSet t, typeId el) | |
241 | { | |
242 | return (tistable_addEntry (usymIdSet_removeFresh (tistable_fetch (t), el))); | |
243 | } | |
244 | ||
245 | cstring typeIdSet_unparse (typeIdSet t) | |
246 | { | |
247 | return (usymIdSet_unparse (tistable_fetch (t))); | |
248 | } | |
249 | ||
250 | int typeIdSet_compare (typeIdSet t1, typeIdSet t2) | |
251 | { | |
252 | return (int_compare (t1, t2)); | |
253 | } | |
254 | ||
255 | typeIdSet typeIdSet_subtract (typeIdSet s, typeIdSet t) | |
256 | { | |
257 | if (typeIdSet_isEmpty (t)) | |
258 | { | |
259 | return s; | |
260 | } | |
261 | else | |
262 | { | |
263 | return (tistable_addEntry (usymIdSet_subtract (tistable_fetch (s), | |
264 | tistable_fetch (t)))); | |
265 | } | |
266 | } | |
267 | ||
268 | cstring typeIdSet_dump (typeIdSet t) | |
269 | { | |
270 | return (message ("%d", t)); | |
271 | } | |
272 | ||
273 | typeIdSet typeIdSet_undump (char **s) | |
274 | { | |
275 | int i; | |
276 | ||
277 | ||
278 | i = getInt (s); | |
279 | ||
280 | llassert (i >= 0 && i < tistableentries); | |
281 | return (typeIdSet) i; | |
282 | } | |
283 | ||
284 | typeIdSet typeIdSet_union (typeIdSet t1, typeIdSet t2) | |
285 | { | |
286 | if (t1 == typeIdSet_undefined) | |
287 | { | |
288 | return t2; | |
289 | } | |
290 | else if (t2 == typeIdSet_undefined) | |
291 | { | |
292 | return t1; | |
293 | } | |
294 | else | |
295 | { | |
296 | return (tistable_addEntry (usymIdSet_newUnion (tistable_fetch (t1), | |
297 | tistable_fetch (t2)))); | |
298 | } | |
299 | } |