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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 | ** cprim.c | |
26 | */ | |
27 | ||
1b8ae690 | 28 | # include "splintMacros.nf" |
616915dd | 29 | # include "basic.h" |
30 | ||
31 | static bool cprim_isReal (cprim c) | |
32 | { | |
33 | return (cprim_isAnyReal (c)); | |
34 | } | |
35 | ||
36 | static bool cprim_isNumeric (cprim c) | |
37 | { | |
38 | return (cprim_isReal (c) || cprim_isInt (c)); | |
39 | } | |
40 | ||
41 | cprim | |
42 | cprim_fromInt (int i) | |
43 | { | |
44 | if (i < CTX_UNKNOWN || i > CTX_LAST) | |
45 | { | |
46 | llcontbug (message ("cprim_fromInt: out of range: %d", i)); | |
47 | return CTX_UNKNOWN; | |
48 | } | |
49 | return (cprim) i; | |
50 | } | |
51 | ||
52 | ||
53 | /* | |
54 | ** not symmetric: c1 := c2 or c2 is passed as c1 | |
55 | ** (if RELAXQUALS, c1 must be "bigger" than c2) | |
56 | */ | |
57 | ||
58 | static bool cprim_closeEnoughAux (cprim p_c1, cprim p_c2, bool p_deep); | |
59 | ||
60 | bool | |
61 | cprim_closeEnoughDeep (cprim c1, cprim c2) | |
62 | { | |
63 | /* | |
64 | ** If * c2 is passed as * c1 | |
65 | ** Comparison is slightly different since it is safe to pass int as long, | |
66 | ** but not to pass int * as long *! | |
67 | ** | |
68 | ** For deep comparisons, +relaxquals does not permit the long/int break. | |
69 | */ | |
70 | ||
71 | return cprim_closeEnoughAux (c1, c2, TRUE); | |
72 | } | |
73 | ||
74 | bool | |
75 | cprim_closeEnough (cprim c1, cprim c2) | |
76 | { | |
77 | return cprim_closeEnoughAux (c1, c2, FALSE); | |
78 | } | |
79 | ||
80 | static bool | |
81 | cprim_closeEnoughAux (cprim c1, cprim c2, bool deep) | |
82 | { | |
83 | if (c1 == c2) return TRUE; | |
84 | ||
81fc136a | 85 | DPRINTF (("cprim close: %s / %s", cprim_unparse (c1), cprim_unparse (c2))); |
86 | ||
616915dd | 87 | if (c1 == CTX_ANYINTEGRAL) |
88 | { | |
89 | if (context_getFlag (FLG_MATCHANYINTEGRAL) | |
90 | || context_getFlag (FLG_IGNOREQUALS)) | |
91 | { | |
92 | return (cprim_isAnyInt (c2) | |
93 | || (cprim_isAnyChar (c2) && context_msgCharInt ())); | |
94 | } | |
95 | else if (context_getFlag (FLG_LONGINTEGRAL)) | |
96 | { | |
97 | return (cprim_closeEnough (CTX_LINT, c2)); | |
98 | } | |
99 | else if (context_getFlag (FLG_LONGUNSIGNEDINTEGRAL)) | |
100 | { | |
101 | return (cprim_closeEnough (CTX_ULINT, c2)); | |
102 | } | |
103 | else | |
104 | { | |
105 | return FALSE; | |
106 | } | |
107 | } | |
108 | ||
109 | if (c1 == CTX_UNSIGNEDINTEGRAL) | |
110 | { | |
111 | if (context_getFlag (FLG_MATCHANYINTEGRAL) | |
112 | || context_getFlag (FLG_IGNOREQUALS)) | |
113 | { | |
6fcd0b1e | 114 | if (context_getFlag (FLG_IGNORESIGNS)) |
115 | { | |
116 | return (cprim_isAnyUnsignedInt (c2) | |
117 | || (cprim_isUnsignedChar (c2) && context_msgCharInt ())); | |
118 | } | |
119 | else | |
120 | { | |
121 | return (cprim_isAnyInt (c2) | |
122 | || (cprim_isAnyChar (c2) && context_msgCharInt ())); | |
123 | } | |
616915dd | 124 | } |
125 | else if (context_getFlag (FLG_LONGUNSIGNEDUNSIGNEDINTEGRAL)) | |
126 | { | |
127 | return (cprim_closeEnough (CTX_ULINT, c2)); | |
128 | } | |
129 | else | |
130 | { | |
131 | return FALSE; | |
132 | } | |
133 | } | |
134 | ||
135 | if (c1 == CTX_SIGNEDINTEGRAL) | |
136 | { | |
137 | if (context_getFlag (FLG_MATCHANYINTEGRAL) | |
138 | || context_getFlag (FLG_IGNOREQUALS)) | |
139 | { | |
140 | return (cprim_isAnyInt (c2) | |
141 | || (cprim_isAnyChar (c2) && context_msgCharInt ())); | |
142 | } | |
143 | else if (context_getFlag (FLG_LONGSIGNEDINTEGRAL)) | |
144 | { | |
145 | return (cprim_closeEnough (CTX_LINT, c2)); | |
146 | } | |
147 | else | |
148 | { | |
149 | return FALSE; | |
150 | } | |
151 | } | |
152 | ||
153 | if (c2 == CTX_ANYINTEGRAL) | |
154 | { | |
155 | if (context_getFlag (FLG_MATCHANYINTEGRAL)) | |
156 | { | |
157 | return (cprim_isAnyInt (c1) | |
158 | || (cprim_isAnyChar (c1) && context_msgCharInt ())); | |
159 | } | |
160 | else if (context_getFlag (FLG_LONGINTEGRAL)) | |
161 | { | |
162 | return (cprim_closeEnough (c1, CTX_LINT)); | |
163 | } | |
164 | else if (context_getFlag (FLG_LONGUNSIGNEDINTEGRAL)) | |
165 | { | |
166 | return (cprim_closeEnough (c1, CTX_ULINT)); | |
167 | } | |
168 | else | |
169 | { | |
170 | return FALSE; | |
171 | } | |
172 | } | |
173 | ||
174 | if (c2 == CTX_UNSIGNEDINTEGRAL) | |
175 | { | |
176 | if (context_getFlag (FLG_MATCHANYINTEGRAL)) | |
177 | { | |
178 | return (cprim_isAnyInt (c1) | |
179 | || (cprim_isAnyChar (c1) && context_msgCharInt ())); | |
180 | } | |
181 | else if (context_getFlag (FLG_LONGUNSIGNEDUNSIGNEDINTEGRAL)) | |
182 | { | |
183 | return (cprim_closeEnough (c1, CTX_ULINT)); | |
184 | } | |
185 | else | |
186 | { | |
187 | return FALSE; | |
188 | } | |
189 | } | |
190 | ||
191 | if (c2 == CTX_SIGNEDINTEGRAL) | |
192 | { | |
193 | if (context_getFlag (FLG_MATCHANYINTEGRAL)) | |
194 | { | |
195 | return (cprim_isAnyInt (c2) | |
196 | || (cprim_isAnyChar (c2) && context_msgCharInt ())); | |
197 | } | |
198 | else if (context_getFlag (FLG_LONGSIGNEDINTEGRAL)) | |
199 | { | |
200 | return (cprim_closeEnough (c1, CTX_LINT)); | |
201 | } | |
202 | else | |
203 | { | |
204 | return FALSE; | |
205 | } | |
206 | } | |
207 | ||
81fc136a | 208 | |
209 | DPRINTF (("cprim close: %s / %s", cprim_unparse (c1), cprim_unparse (c2))); | |
210 | ||
616915dd | 211 | if (context_getFlag (FLG_RELAXTYPES)) |
212 | { | |
213 | if (cprim_isNumeric (c1) && cprim_isNumeric (c2)) return TRUE; | |
214 | } | |
215 | ||
216 | if (context_getFlag (FLG_IGNOREQUALS)) | |
217 | { | |
218 | switch (c1) | |
219 | { | |
220 | case CTX_CHAR: | |
221 | case CTX_UCHAR: | |
81fc136a | 222 | if (cprim_isAnyChar (c2) |
223 | || (cprim_isAnyInt (c2) && (context_msgCharInt ()))) { | |
224 | return TRUE; | |
225 | } | |
226 | break; | |
616915dd | 227 | case CTX_DOUBLE: |
228 | case CTX_FLOAT: | |
229 | case CTX_LDOUBLE: | |
81fc136a | 230 | if (c2 == CTX_DOUBLE || c2 == CTX_FLOAT || c2 == CTX_LDOUBLE) { |
231 | return TRUE; | |
232 | } | |
233 | break; | |
616915dd | 234 | case CTX_INT: |
235 | case CTX_LINT: | |
236 | case CTX_LLINT: | |
237 | case CTX_ULLINT: | |
238 | case CTX_SINT: | |
239 | case CTX_UINT: | |
240 | case CTX_ULINT: | |
241 | case CTX_USINT: | |
81fc136a | 242 | if (cprim_isAnyInt (c2) |
243 | || (cprim_isAnyChar (c2) && context_msgCharInt ())) { | |
244 | return TRUE; | |
245 | } | |
53306cab | 246 | /*@fallthrough@*/ |
616915dd | 247 | default: |
81fc136a | 248 | ; |
616915dd | 249 | } |
250 | } | |
81fc136a | 251 | |
252 | if (context_getFlag (FLG_IGNORESIGNS)) | |
616915dd | 253 | { |
81fc136a | 254 | if (c1 == CTX_UCHAR) |
616915dd | 255 | { |
81fc136a | 256 | c1 = CTX_CHAR; |
616915dd | 257 | } |
81fc136a | 258 | else if (c1 == CTX_UINT) |
616915dd | 259 | { |
81fc136a | 260 | c1 = CTX_INT; |
261 | } | |
262 | else if (c1 == CTX_ULINT) | |
263 | { | |
264 | c1 = CTX_LINT; | |
265 | } | |
266 | /* 2001-06-10: This fix provided by Jim Zelenka: */ | |
267 | else if (c1 == CTX_ULLINT) | |
268 | { | |
269 | c1 = CTX_LLINT; | |
270 | } | |
271 | /* End fix */ | |
272 | else if (c1 == CTX_USINT) | |
273 | { | |
274 | c1 = CTX_SINT; | |
275 | } | |
276 | else | |
277 | { | |
278 | ; | |
279 | } | |
280 | ||
281 | if (c2 == CTX_UCHAR) | |
282 | { | |
283 | c2 = CTX_CHAR; | |
284 | } | |
285 | else if (c2 == CTX_UINT) | |
286 | { | |
287 | c2 = CTX_INT; | |
288 | } | |
289 | else if (c2 == CTX_ULINT) | |
290 | { | |
291 | c2 = CTX_LINT; | |
292 | } | |
293 | /* 2001-06-10: This fix provided by Jim Zelenka: */ | |
294 | else if (c2 == CTX_ULLINT) | |
295 | { | |
296 | c2 = CTX_LLINT; | |
297 | } | |
298 | /* End fix */ | |
299 | else if (c2 == CTX_USINT) | |
300 | { | |
301 | c2 = CTX_SINT; | |
616915dd | 302 | } |
81fc136a | 303 | else |
304 | { | |
305 | ; | |
306 | } | |
307 | } | |
616915dd | 308 | |
81fc136a | 309 | if (c1 == c2) return TRUE; |
310 | ||
311 | if (context_getFlag (FLG_FLOATDOUBLE)) | |
312 | { | |
313 | if (c1 == CTX_FLOAT && c2 == CTX_DOUBLE) | |
616915dd | 314 | { |
81fc136a | 315 | return TRUE; |
316 | } | |
317 | if (c2 == CTX_FLOAT && c1 == CTX_DOUBLE) | |
318 | { | |
319 | return TRUE; | |
320 | } | |
321 | } | |
322 | ||
323 | DPRINTF (("cprim close: %s / %s", cprim_unparse (c1), cprim_unparse (c2))); | |
324 | ||
325 | if (!deep && context_getFlag (FLG_RELAXQUALS)) | |
326 | { | |
327 | switch (c1) | |
328 | { | |
329 | case CTX_DOUBLE: | |
330 | return (c2 == CTX_FLOAT); | |
331 | case CTX_LDOUBLE: | |
332 | return (c2 == CTX_DOUBLE || c2 == CTX_FLOAT); | |
333 | case CTX_SINT: | |
334 | return ((c2 == CTX_CHAR && context_msgCharInt ()) | |
335 | || (c2 == CTX_INT && context_msgShortInt ()) | |
336 | || (c2 == CTX_LINT && context_msgShortInt () && context_msgLongInt ())); | |
337 | ||
338 | case CTX_INT: | |
339 | return ((c2 == CTX_SINT | |
340 | || (cprim_isAnyChar (c2) && context_msgCharInt ()) | |
341 | || (c2 == CTX_LINT && context_msgLongInt ()))); | |
342 | ||
343 | case CTX_LLINT: | |
344 | return (c2 == CTX_SINT | |
345 | || c2 == CTX_INT | |
616915dd | 346 | || c2 == CTX_LINT |
81fc136a | 347 | || (cprim_isAnyChar (c2) && context_msgCharInt ())); |
348 | case CTX_ULLINT: | |
349 | return (c2 == CTX_USINT | |
350 | || c2 == CTX_UINT | |
351 | || c2 == CTX_ULINT | |
352 | /* 2001-06-10: This fix provided by Jim Zelenka: */ | |
353 | || (cprim_isAnyChar (c2) && context_msgCharInt ())); | |
354 | case CTX_LINT: | |
355 | return (c2 == CTX_SINT | |
356 | || c2 == CTX_INT | |
357 | || (cprim_isAnyChar (c2) && context_msgCharInt ())); | |
358 | case CTX_UINT: | |
359 | return (c2 == CTX_USINT | |
360 | || (c2 == CTX_UCHAR && context_msgCharInt ())); | |
361 | case CTX_USINT: | |
362 | return (c2 == CTX_UCHAR && context_msgCharInt ()); | |
363 | case CTX_ULINT: | |
364 | /* 2001-06-10: This fix provided by Jim Zelenka: */ | |
365 | return (c2 == CTX_UINT || c2 == CTX_USINT | |
366 | || (c2 == CTX_UCHAR && context_msgCharInt())); | |
367 | case CTX_UCHAR: | |
368 | return (c2 == CTX_UINT && context_msgCharInt ()); | |
369 | case CTX_CHAR: | |
370 | return ((c2 == CTX_INT || c2 == CTX_SINT) | |
371 | && context_msgCharInt ()); | |
372 | default: | |
373 | return FALSE; | |
616915dd | 374 | } |
81fc136a | 375 | } |
376 | else | |
377 | { | |
378 | switch (c1) | |
616915dd | 379 | { |
81fc136a | 380 | case CTX_DOUBLE: |
381 | case CTX_LDOUBLE: | |
382 | return FALSE; | |
383 | case CTX_SINT: | |
384 | if (c2 == CTX_INT && context_msgShortInt ()) { | |
385 | return TRUE; | |
386 | } | |
387 | /*@fallthrough@*/ | |
388 | case CTX_INT: | |
389 | if (c2 == CTX_INT && context_msgLongInt ()) { | |
390 | return TRUE; | |
391 | } | |
392 | ||
393 | if (c2 == CTX_SINT && context_msgShortInt ()) { | |
394 | return TRUE; | |
395 | } | |
396 | /*@fallthrough@*/ | |
397 | case CTX_LINT: | |
398 | if (c2 == CTX_INT && context_msgLongInt ()) { | |
399 | return TRUE; | |
400 | } | |
401 | /*@fallthrough@*/ | |
402 | case CTX_LLINT: | |
403 | return (c2 == CTX_CHAR && context_msgCharInt ()); | |
404 | case CTX_UINT: | |
405 | case CTX_USINT: | |
406 | case CTX_ULINT: | |
407 | case CTX_ULLINT: | |
408 | return (c2 == CTX_UCHAR && context_msgCharInt ()); | |
409 | case CTX_UCHAR: | |
410 | return (c2 == CTX_UINT && context_msgCharInt ()); | |
411 | case CTX_CHAR: | |
412 | return ((c2 == CTX_INT || c2 == CTX_SINT) | |
413 | && context_msgCharInt ()); | |
414 | default: | |
415 | return FALSE; | |
616915dd | 416 | } |
417 | } | |
418 | } | |
419 | ||
420 | /*@only@*/ cstring | |
421 | cprim_unparse (cprim c) | |
422 | { | |
423 | switch (c) | |
424 | { | |
425 | case CTX_UNKNOWN: | |
426 | return cstring_makeLiteral ("-"); | |
427 | case CTX_VOID: | |
428 | return cstring_makeLiteral ("void"); | |
429 | case CTX_CHAR: | |
430 | return cstring_makeLiteral ("char"); | |
431 | case CTX_UCHAR: | |
432 | return cstring_makeLiteral ("unsigned char"); | |
433 | case CTX_DOUBLE: | |
434 | return cstring_makeLiteral ("double"); | |
435 | case CTX_LDOUBLE: | |
436 | return cstring_makeLiteral ("long double"); | |
437 | case CTX_FLOAT: | |
438 | return cstring_makeLiteral ("float"); | |
439 | case CTX_INT: | |
440 | return cstring_makeLiteral ("int"); | |
441 | case CTX_LINT: | |
442 | return cstring_makeLiteral ("long int"); | |
443 | case CTX_LLINT: | |
444 | return cstring_makeLiteral ("long long"); | |
445 | case CTX_ULLINT: | |
446 | return cstring_makeLiteral ("unsigned long long"); | |
447 | case CTX_SINT: | |
448 | return cstring_makeLiteral ("short int"); | |
449 | case CTX_UINT: | |
450 | return cstring_makeLiteral ("unsigned int"); | |
451 | case CTX_ULINT: | |
452 | return cstring_makeLiteral ("unsigned long int"); | |
453 | case CTX_USINT: | |
454 | return cstring_makeLiteral ("unsigned short int"); | |
455 | case CTX_UNSIGNEDINTEGRAL: | |
456 | return cstring_makeLiteral ("arbitrary unsigned integral type"); | |
457 | case CTX_SIGNEDINTEGRAL: | |
458 | return cstring_makeLiteral ("arbitrary signed integral type"); | |
459 | case CTX_ANYINTEGRAL: | |
460 | return cstring_makeLiteral ("arbitrary integral type"); | |
461 | default: | |
462 | return cstring_makeLiteral ("unknown prim"); | |
463 | } | |
464 | } | |
465 | ||
466 | bool cprim_isInt (cprim c) | |
467 | { | |
468 | return (cprim_isAnyInt (c) | |
469 | || (cprim_isAnyChar (c) && context_msgCharInt ())); | |
470 | } | |
471 | ||
e5081f8c | 472 | int cprim_getExpectedBits (cprim c) |
473 | { | |
474 | /* Any basis to these numbers? Just guesses for now..., check ISO spec */ | |
475 | switch (c) | |
476 | { | |
477 | case CTX_UNKNOWN: | |
478 | return 0; | |
479 | case CTX_VOID: | |
480 | return 0; | |
481 | case CTX_CHAR: | |
482 | return 8; | |
483 | case CTX_UCHAR: | |
484 | return 8; | |
485 | case CTX_DOUBLE: | |
486 | return 64; | |
487 | case CTX_LDOUBLE: | |
488 | return 128; | |
489 | case CTX_FLOAT: | |
490 | return 32; | |
491 | case CTX_INT: | |
492 | return 32; | |
493 | case CTX_LINT: | |
494 | return 64; | |
495 | case CTX_LLINT: | |
496 | return 128; | |
497 | case CTX_ULLINT: | |
498 | return 128; | |
499 | case CTX_SINT: | |
500 | return 8; | |
501 | case CTX_UINT: | |
502 | return 32; | |
503 | case CTX_ULINT: | |
504 | return 64; | |
505 | case CTX_USINT: | |
506 | return 8; | |
507 | case CTX_UNSIGNEDINTEGRAL: | |
508 | return 64; | |
509 | case CTX_SIGNEDINTEGRAL: | |
510 | return 64; | |
511 | case CTX_ANYINTEGRAL: | |
512 | return 64; | |
513 | default: | |
514 | return 0; | |
515 | } | |
516 | } |