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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 | ** multiVal.c | |
26 | */ | |
27 | ||
1b8ae690 | 28 | # include "splintMacros.nf" |
616915dd | 29 | # include "basic.h" |
30 | ||
31 | /*@only@*/ multiVal multiVal_unknown () | |
32 | { | |
33 | return multiVal_undefined; | |
34 | } | |
35 | ||
36 | static /*@special@*/ /*@notnull@*/ multiVal multiVal_create (mvkind kind) | |
37 | /*@defines result->kind@*/ | |
38 | { | |
39 | multiVal mv = (multiVal) dmalloc (sizeof (*mv)); | |
40 | ||
41 | mv->kind = kind; | |
42 | return mv; | |
43 | } | |
44 | ||
45 | /*@only@*/ multiVal multiVal_makeInt (long x) | |
46 | { | |
47 | multiVal mv = multiVal_create (MVLONG); | |
48 | ||
49 | mv->value.ival = x; | |
50 | return mv; | |
51 | } | |
52 | ||
53 | /*@only@*/ multiVal multiVal_makeChar (char x) | |
54 | { | |
55 | multiVal mv = multiVal_create (MVCHAR); | |
4dd72714 | 56 | mv->value.cval = x; |
57 | return mv; | |
616915dd | 58 | } |
59 | ||
60 | /*@only@*/ multiVal multiVal_makeDouble (double x) | |
61 | { | |
62 | multiVal mv = multiVal_create (MVDOUBLE); | |
63 | ||
64 | mv->value.fval = x; | |
65 | return mv; | |
66 | } | |
67 | ||
68 | /*@only@*/ multiVal multiVal_makeString (/*@only@*/ cstring s) | |
69 | { | |
70 | multiVal mv = multiVal_create (MVSTRING); | |
71 | ||
72 | mv->value.sval = s; | |
73 | return mv; | |
74 | } | |
75 | ||
76 | ||
77 | /*@only@*/ multiVal multiVal_copy (multiVal m) | |
78 | { | |
79 | multiVal r; | |
80 | ||
81 | if (multiVal_isUndefined (m)) | |
82 | { | |
83 | return multiVal_undefined; | |
84 | } | |
85 | ||
86 | r = multiVal_create (m->kind); | |
87 | ||
88 | switch (m->kind) | |
89 | { | |
90 | case MVLONG: | |
91 | r->value.ival = m->value.ival; | |
92 | break; | |
93 | case MVCHAR: | |
94 | r->value.cval = m->value.cval; | |
95 | break; | |
96 | case MVDOUBLE: | |
97 | r->value.fval = m->value.fval; | |
98 | break; | |
99 | case MVSTRING: | |
100 | r->value.sval = cstring_copy (m->value.sval); | |
101 | break; | |
102 | } | |
103 | ||
104 | return r; | |
105 | } | |
106 | ||
107 | multiVal multiVal_invert (multiVal m) | |
108 | { | |
109 | if (multiVal_isUndefined (m)) | |
110 | { | |
111 | return multiVal_undefined; | |
112 | } | |
113 | ||
114 | switch (m->kind) | |
115 | { | |
116 | case MVLONG: | |
117 | return multiVal_makeInt (-1 * m->value.ival); | |
118 | case MVCHAR: | |
119 | BADBRANCHCONT; | |
120 | return multiVal_undefined; | |
121 | case MVDOUBLE: | |
122 | return multiVal_makeDouble (-1.0 * m->value.fval); | |
123 | case MVSTRING: | |
124 | BADBRANCHCONT; | |
125 | return multiVal_undefined; | |
126 | } | |
127 | ||
128 | BADEXIT; | |
129 | } | |
130 | ||
131 | long multiVal_forceInt (multiVal m) | |
132 | { | |
133 | llassert (multiVal_isInt (m)); | |
134 | ||
135 | return m->value.ival; | |
136 | } | |
137 | ||
138 | char multiVal_forceChar (multiVal m) | |
139 | { | |
140 | llassert (multiVal_isChar (m)); | |
141 | ||
142 | return m->value.cval; | |
143 | } | |
144 | ||
145 | double multiVal_forceDouble (multiVal m) | |
146 | { | |
147 | llassert (multiVal_isDouble (m)); | |
148 | ||
149 | return m->value.fval; | |
150 | } | |
151 | ||
152 | /*@dependent@*/ /*@observer@*/ cstring multiVal_forceString (multiVal m) | |
153 | { | |
154 | llassert (multiVal_isString (m)); | |
155 | ||
156 | return m->value.sval; | |
157 | } | |
158 | ||
159 | bool multiVal_isInt (multiVal m) | |
160 | { | |
161 | return (multiVal_isDefined (m) && m->kind == MVLONG); | |
162 | } | |
163 | ||
164 | bool multiVal_isChar (multiVal m) | |
165 | { | |
166 | return (multiVal_isDefined (m) && m->kind == MVCHAR); | |
167 | } | |
168 | ||
169 | bool multiVal_isDouble (multiVal m) | |
170 | { | |
171 | return (multiVal_isDefined (m) && m->kind == MVDOUBLE); | |
172 | } | |
173 | ||
174 | bool multiVal_isString (multiVal m) | |
175 | { | |
176 | return (multiVal_isDefined (m) && m->kind == MVSTRING); | |
177 | } | |
178 | ||
179 | /*@only@*/ cstring multiVal_unparse (multiVal m) | |
180 | { | |
181 | if (multiVal_isDefined (m)) | |
182 | { | |
183 | switch (m->kind) | |
184 | { | |
185 | case MVLONG: | |
186 | return message ("%d", (int)m->value.ival); | |
187 | case MVCHAR: | |
188 | return message ("'%h'", m->value.cval); | |
189 | case MVDOUBLE: | |
190 | return message ("%f", (float)m->value.fval); | |
191 | case MVSTRING: | |
192 | return message ("%s", m->value.sval); | |
193 | } | |
194 | BADEXIT; | |
195 | } | |
196 | else | |
197 | { | |
198 | return (cstring_makeLiteral ("?")); | |
199 | } | |
200 | } | |
201 | ||
202 | /*@only@*/ cstring multiVal_dump (multiVal m) | |
203 | { | |
204 | if (multiVal_isDefined (m)) | |
205 | { | |
206 | switch (m->kind) | |
207 | { | |
208 | case MVLONG: | |
209 | return (message ("i%d", (int)m->value.ival)); | |
210 | case MVCHAR: | |
211 | return (message ("c%d", (int)m->value.cval)); | |
212 | case MVDOUBLE: | |
213 | return (message ("d%f", (float)m->value.fval)); | |
214 | case MVSTRING: | |
215 | return (message ("s%s", m->value.sval)); | |
216 | } | |
217 | BADEXIT; | |
218 | } | |
219 | else | |
220 | { | |
221 | return (cstring_undefined); | |
222 | } | |
223 | } | |
224 | ||
225 | /*@only@*/ multiVal multiVal_undump (char **s) | |
226 | { | |
227 | char tchar = **s; | |
228 | ||
229 | switch (tchar) | |
230 | { | |
231 | case 'i': | |
232 | (*s)++; | |
28bf4b0b | 233 | return multiVal_makeInt (reader_getInt (s)); |
616915dd | 234 | case 'c': |
235 | (*s)++; | |
28bf4b0b | 236 | return multiVal_makeChar ((char) reader_getInt (s)); |
616915dd | 237 | case 'd': |
238 | (*s)++; | |
28bf4b0b | 239 | return multiVal_makeDouble (reader_getDouble (s)); |
616915dd | 240 | case 's': |
241 | { | |
242 | cstring st = cstring_undefined; | |
243 | ||
244 | (*s)++; | |
245 | while (**s != '#') | |
246 | { | |
247 | st = cstring_appendChar (st, **s); | |
248 | (*s)++; | |
249 | } | |
250 | ||
251 | return multiVal_makeString (st); | |
252 | } | |
253 | case '@': | |
254 | case '#': | |
255 | return multiVal_unknown (); | |
256 | BADDEFAULT; | |
257 | } | |
258 | ||
259 | BADEXIT; | |
260 | } | |
261 | ||
262 | int multiVal_compare (multiVal m1, multiVal m2) | |
263 | { | |
264 | if (multiVal_isUndefined (m1)) | |
265 | { | |
266 | if (multiVal_isUndefined (m2)) | |
267 | { | |
268 | return 0; | |
269 | } | |
270 | ||
271 | else return -1; | |
272 | } | |
273 | if (multiVal_isUndefined (m2)) | |
274 | { | |
275 | return -1; | |
276 | } | |
277 | ||
278 | COMPARERETURN (generic_compare (m1->kind, m2->kind)); | |
279 | ||
280 | switch (m1->kind) | |
281 | { | |
282 | case MVLONG: return (generic_compare (m1->value.ival, m2->value.ival)); | |
283 | case MVCHAR: return (generic_compare (m1->value.cval, m2->value.cval)); | |
284 | case MVDOUBLE: return (generic_compare (m1->value.fval, m2->value.fval)); | |
285 | case MVSTRING: return (cstring_compare (m1->value.sval, m2->value.sval)); | |
286 | } | |
287 | ||
288 | BADEXIT; | |
289 | } | |
290 | ||
a956d444 | 291 | multiVal multiVal_add (multiVal m1, multiVal m2) |
292 | { | |
293 | if (multiVal_isUndefined (m1) || multiVal_isUndefined (m2) || m1->kind != m2->kind) | |
294 | { | |
295 | return multiVal_undefined; | |
296 | } | |
297 | ||
298 | switch (m1->kind) | |
299 | { | |
300 | case MVLONG: return (multiVal_makeInt (m1->value.ival + m2->value.ival)); | |
4dd72714 | 301 | case MVCHAR: return (multiVal_makeChar ((char) (m1->value.cval + m2->value.cval))); |
a956d444 | 302 | case MVDOUBLE: return (multiVal_makeDouble (m1->value.fval + m2->value.fval)); |
303 | case MVSTRING: return multiVal_undefined; | |
304 | } | |
305 | ||
306 | BADEXIT; | |
307 | } | |
308 | ||
309 | multiVal multiVal_subtract (multiVal m1, multiVal m2) | |
310 | { | |
311 | if (multiVal_isUndefined (m1) || multiVal_isUndefined (m2) || m1->kind != m2->kind) | |
312 | { | |
313 | return multiVal_undefined; | |
314 | } | |
315 | ||
316 | switch (m1->kind) | |
317 | { | |
318 | case MVLONG: return (multiVal_makeInt (m1->value.ival - m2->value.ival)); | |
4dd72714 | 319 | case MVCHAR: return (multiVal_makeChar ((char) (m1->value.cval - m2->value.cval))); |
a956d444 | 320 | case MVDOUBLE: return (multiVal_makeDouble (m1->value.fval - m2->value.fval)); |
321 | case MVSTRING: return multiVal_undefined; | |
322 | } | |
323 | ||
324 | BADEXIT; | |
325 | } | |
326 | ||
327 | multiVal multiVal_multiply (multiVal m1, multiVal m2) | |
328 | { | |
329 | if (multiVal_isUndefined (m1) || multiVal_isUndefined (m2) || m1->kind != m2->kind) | |
330 | { | |
331 | return multiVal_undefined; | |
332 | } | |
333 | ||
334 | switch (m1->kind) | |
335 | { | |
336 | case MVLONG: return (multiVal_makeInt (m1->value.ival * m2->value.ival)); | |
4dd72714 | 337 | case MVCHAR: return (multiVal_makeChar ((char) (m1->value.cval * m2->value.cval))); |
a956d444 | 338 | case MVDOUBLE: return (multiVal_makeDouble (m1->value.fval * m2->value.fval)); |
339 | case MVSTRING: return multiVal_undefined; | |
340 | } | |
341 | ||
342 | BADEXIT; | |
343 | } | |
344 | ||
345 | multiVal multiVal_divide (multiVal m1, multiVal m2) | |
346 | { | |
347 | if (multiVal_isUndefined (m1) || multiVal_isUndefined (m2) || m1->kind != m2->kind) | |
348 | { | |
349 | return multiVal_undefined; | |
350 | } | |
351 | ||
352 | switch (m1->kind) | |
353 | { | |
91f027c7 | 354 | case MVLONG: |
355 | if (m2->value.ival != 0) | |
356 | { | |
357 | return (multiVal_makeInt (m1->value.ival / m2->value.ival)); | |
358 | } | |
359 | else | |
360 | { | |
361 | return multiVal_undefined; | |
362 | } | |
363 | case MVCHAR: | |
9dc8a5c1 | 364 | if (m2->value.cval != (char) 0) |
91f027c7 | 365 | { |
366 | return (multiVal_makeChar ((char) (m1->value.cval / m2->value.cval))); | |
367 | } | |
368 | else | |
369 | { | |
370 | return multiVal_undefined; | |
371 | } | |
372 | case MVDOUBLE: | |
9dc8a5c1 | 373 | return multiVal_undefined; /* Don't attempt to divide floats */ |
a956d444 | 374 | case MVSTRING: return multiVal_undefined; |
375 | } | |
376 | ||
377 | BADEXIT; | |
378 | } | |
379 | ||
616915dd | 380 | void multiVal_free (/*@only@*/ multiVal m) |
381 | { | |
382 | if (multiVal_isDefined (m)) | |
383 | { | |
384 | if (m->kind == MVSTRING) | |
385 | { | |
386 | cstring_free (m->value.sval); | |
387 | } | |
388 | ||
389 | sfree (m); | |
390 | } | |
391 | } | |
392 | ||
393 | ||
394 | ||
395 |