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28bf4b0b | 1 | /* |
11db3170 | 2 | ** Splint - annotation-assisted static program checker |
c59f5181 | 3 | ** Copyright (C) 1994-2003 University of Virginia, |
28bf4b0b | 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 |
28bf4b0b | 23 | */ |
24 | /* | |
25 | ** stateClause.c | |
26 | */ | |
27 | ||
1b8ae690 | 28 | # include "splintMacros.nf" |
28bf4b0b | 29 | # include "basic.h" |
30 | # include "cgrammar.h" | |
31 | # include "cgrammar_tokens.h" | |
32 | ||
33 | static stateClause | |
34 | stateClause_createRaw (stateConstraint st, stateClauseKind sk, /*@only@*/ sRefSet s) | |
35 | { | |
36 | stateClause ret = (stateClause) dmalloc (sizeof (*ret)); | |
37 | ||
38 | ret->state = st; | |
39 | ret->kind = sk; | |
40 | ret->squal = qual_createUnknown (); | |
41 | ret->refs = s; | |
42 | ret->loc = fileloc_undefined; | |
43 | return ret; | |
44 | } | |
45 | ||
46 | stateClause | |
47 | stateClause_create (lltok tok, qual q, sRefSet s) | |
48 | { | |
49 | stateClause ret = (stateClause) dmalloc (sizeof (*ret)); | |
50 | ||
51 | if (lltok_getTok (tok) == QPRECLAUSE) | |
52 | { | |
53 | ret->state = TK_BEFORE; | |
54 | } | |
55 | else if (lltok_getTok (tok) == QPOSTCLAUSE) | |
56 | { | |
57 | ret->state = TK_AFTER; | |
58 | } | |
59 | else | |
60 | { | |
61 | BADBRANCH; | |
62 | } | |
63 | ||
64 | ret->loc = fileloc_copy (lltok_getLoc (tok)); | |
65 | ||
66 | ret->squal = q; | |
67 | ret->refs = s; | |
68 | ||
69 | if (sRefSet_isDefined (s)) | |
70 | { | |
71 | ret->kind = SP_QUAL; | |
72 | } | |
73 | else | |
74 | { | |
75 | ret->kind = SP_GLOBAL; | |
76 | } | |
77 | ||
78 | return ret; | |
79 | } | |
80 | ||
81 | bool stateClause_isBeforeOnly (stateClause cl) | |
82 | { | |
83 | return (cl->state == TK_BEFORE); | |
84 | } | |
85 | ||
86 | bool stateClause_isBefore (stateClause cl) | |
87 | { | |
88 | return (cl->state == TK_BEFORE || cl->state == TK_BOTH); | |
89 | } | |
90 | ||
91 | bool stateClause_isAfter (stateClause cl) | |
92 | { | |
93 | return (cl->state == TK_AFTER || cl->state == TK_BOTH); | |
94 | } | |
95 | ||
96 | bool stateClause_isEnsures (stateClause cl) | |
97 | { | |
98 | return (cl->state == TK_AFTER); | |
99 | } | |
100 | ||
3e3ec469 | 101 | bool stateClause_isQual (stateClause cl) |
102 | { | |
103 | return (cl->kind == SP_QUAL); | |
104 | } | |
105 | ||
28bf4b0b | 106 | bool stateClause_isMemoryAllocation (stateClause cl) |
107 | { | |
108 | switch (cl->kind) | |
109 | { | |
110 | case SP_ALLOCATES: | |
111 | case SP_RELEASES: | |
112 | return TRUE; | |
113 | case SP_USES: | |
114 | case SP_DEFINES: | |
115 | case SP_SETS: | |
116 | return FALSE; | |
117 | case SP_GLOBAL: | |
118 | return FALSE; | |
119 | case SP_QUAL: | |
120 | return (qual_isMemoryAllocation (cl->squal) | |
121 | || qual_isSharing (cl->squal)); | |
122 | } | |
123 | ||
124 | BADEXIT; | |
125 | } | |
126 | ||
127 | /* | |
128 | ** An error is reported if the test is NOT true. | |
129 | */ | |
4dd72714 | 130 | \r |
131 | # ifdef WIN32\r | |
132 | /* Microsoft doesn't believe in higher order functions... */\r | |
133 | # pragma warning( disable : 4550 )\r | |
134 | # endif \r | |
28bf4b0b | 135 | |
136 | sRefTest stateClause_getPreTestFunction (stateClause cl) | |
137 | { | |
138 | switch (cl->kind) | |
139 | { | |
140 | case SP_USES: | |
141 | return sRef_isStrictReadable; | |
142 | case SP_ALLOCATES: | |
143 | return sRef_hasNoStorage; | |
144 | case SP_DEFINES: | |
145 | return sRef_hasNoStorage; | |
146 | case SP_SETS: | |
147 | return sRef_isNotUndefined; | |
148 | case SP_RELEASES: | |
149 | return sRef_isNotUndefined; | |
150 | case SP_GLOBAL: | |
151 | BADBRANCH; | |
152 | case SP_QUAL: | |
153 | { | |
154 | if (qual_isOnly (cl->squal)) { | |
155 | return sRef_isOnly; | |
156 | } else if (qual_isShared (cl->squal)) { | |
157 | return sRef_isShared; | |
158 | } else if (qual_isDependent (cl->squal)) { | |
159 | return sRef_isDependent; | |
160 | } else if (qual_isOwned (cl->squal)) { | |
161 | return sRef_isOwned; | |
162 | } else if (qual_isObserver (cl->squal)) { | |
163 | return sRef_isObserver; | |
164 | } else if (qual_isExposed (cl->squal)) { | |
165 | return sRef_isExposed; | |
166 | } else if (qual_isNotNull (cl->squal)) { | |
167 | return sRef_isNotNull; | |
168 | } else if (qual_isIsNull (cl->squal)) { | |
169 | return sRef_isDefinitelyNull; | |
170 | } else { | |
171 | BADBRANCH; | |
172 | } | |
173 | } | |
174 | } | |
175 | ||
176 | BADEXIT; | |
177 | } | |
178 | ||
179 | sRefTest stateClause_getPostTestFunction (stateClause cl) | |
180 | { | |
181 | llassert (stateClause_isAfter (cl)); | |
182 | ||
183 | switch (cl->kind) | |
184 | { | |
185 | case SP_USES: | |
186 | return NULL; | |
187 | case SP_ALLOCATES: | |
188 | return sRef_isAllocated; | |
189 | case SP_DEFINES: | |
190 | return sRef_isReallyDefined; | |
191 | case SP_SETS: | |
192 | return sRef_isReallyDefined; | |
193 | case SP_RELEASES: | |
194 | return sRef_isDeadStorage; | |
195 | case SP_GLOBAL: | |
196 | BADBRANCH; | |
197 | case SP_QUAL: | |
198 | if (qual_isOnly (cl->squal)) { | |
199 | return sRef_isOnly; | |
200 | } else if (qual_isShared (cl->squal)) { | |
201 | return sRef_isShared; | |
202 | } else if (qual_isDependent (cl->squal)) { | |
203 | return sRef_isDependent; | |
204 | } else if (qual_isOwned (cl->squal)) { | |
205 | return sRef_isOwned; | |
206 | } else if (qual_isObserver (cl->squal)) { | |
207 | return sRef_isObserver; | |
208 | } else if (qual_isExposed (cl->squal)) { | |
209 | return sRef_isExposed; | |
210 | } else if (qual_isNotNull (cl->squal)) { | |
211 | return sRef_isNotNull; | |
212 | } else if (qual_isIsNull (cl->squal)) { | |
213 | return sRef_isDefinitelyNull; | |
214 | } else { | |
215 | BADBRANCH; | |
216 | } | |
217 | } | |
218 | ||
219 | BADEXIT; | |
220 | } | |
221 | ||
222 | sRefShower stateClause_getPostTestShower (stateClause cl) | |
223 | { | |
224 | switch (cl->kind) | |
225 | { | |
226 | case SP_USES: | |
227 | case SP_ALLOCATES: | |
228 | return NULL; | |
229 | case SP_DEFINES: | |
230 | case SP_SETS: | |
231 | return sRef_showNotReallyDefined; | |
232 | case SP_RELEASES: | |
233 | return NULL; | |
234 | case SP_GLOBAL: | |
235 | BADBRANCH; | |
236 | case SP_QUAL: | |
237 | if (qual_isMemoryAllocation (cl->squal)) { | |
238 | return sRef_showAliasInfo; | |
239 | } else if (qual_isSharing (cl->squal)) { | |
240 | return sRef_showExpInfo; | |
241 | } else if (qual_isIsNull (cl->squal) || qual_isNotNull (cl->squal)) { | |
242 | return sRef_showNullInfo; | |
243 | } else { | |
244 | BADBRANCH; | |
245 | } | |
246 | } | |
247 | ||
248 | BADEXIT; | |
249 | } | |
250 | ||
251 | sRefMod stateClause_getEntryFunction (stateClause cl) | |
252 | { | |
253 | if (cl->state == TK_BEFORE || cl->state == TK_BOTH) | |
254 | { | |
255 | switch (cl->kind) | |
256 | { | |
257 | case SP_USES: | |
258 | return sRef_setDefinedComplete; | |
259 | case SP_ALLOCATES: | |
3e3ec469 | 260 | return sRef_setUndefined; /* evans 2002-01-01 */ |
28bf4b0b | 261 | case SP_DEFINES: |
3e3ec469 | 262 | return sRef_setUndefined; /* evans 2002-01-01 */ |
28bf4b0b | 263 | case SP_SETS: |
264 | return sRef_setAllocatedComplete; | |
265 | case SP_RELEASES: | |
266 | return sRef_setDefinedComplete; | |
267 | case SP_GLOBAL: | |
268 | BADBRANCH; | |
269 | case SP_QUAL: | |
270 | if (qual_isOnly (cl->squal)) { | |
271 | return sRef_setOnly; | |
272 | } else if (qual_isShared (cl->squal)) { | |
273 | return sRef_setShared; | |
274 | } else if (qual_isDependent (cl->squal)) { | |
275 | return sRef_setDependent; | |
276 | } else if (qual_isOwned (cl->squal)) { | |
277 | return sRef_setOwned; | |
278 | } else if (qual_isObserver (cl->squal)) { | |
279 | return sRef_setObserver; | |
280 | } else if (qual_isExposed (cl->squal)) { | |
281 | return sRef_setExposed; | |
282 | } else if (qual_isNotNull (cl->squal)) { | |
283 | return sRef_setNotNull; | |
284 | } else if (qual_isIsNull (cl->squal)) { | |
285 | return sRef_setDefNull; | |
286 | } else { | |
287 | DPRINTF (("Here we are: %s", | |
288 | qual_unparse (cl->squal))); | |
289 | BADBRANCH; | |
290 | } | |
291 | } | |
292 | ||
293 | BADBRANCH; | |
294 | } | |
295 | else | |
296 | { | |
297 | return NULL; | |
298 | } | |
299 | ||
8250fa4a | 300 | BADBRANCHNULL; |
28bf4b0b | 301 | } |
302 | ||
303 | sRefMod stateClause_getEffectFunction (stateClause cl) | |
304 | { | |
305 | if (cl->state == TK_AFTER || cl->state == TK_BOTH) | |
306 | { | |
307 | switch (cl->kind) | |
308 | { | |
309 | case SP_USES: | |
310 | return NULL; | |
311 | case SP_ALLOCATES: | |
312 | return sRef_setAllocatedComplete; | |
313 | case SP_DEFINES: | |
314 | return sRef_setDefinedNCComplete; | |
315 | case SP_SETS: | |
316 | return sRef_setDefinedNCComplete; | |
317 | case SP_RELEASES: | |
318 | return sRef_killComplete; | |
319 | case SP_GLOBAL: | |
320 | BADBRANCH; | |
321 | case SP_QUAL: | |
322 | if (qual_isOnly (cl->squal)) { | |
323 | return sRef_setOnly; | |
324 | } else if (qual_isShared (cl->squal)) { | |
325 | return sRef_setShared; | |
326 | } else if (qual_isDependent (cl->squal)) { | |
327 | return sRef_setDependent; | |
328 | } else if (qual_isOwned (cl->squal)) { | |
329 | return sRef_setOwned; | |
330 | } else if (qual_isObserver (cl->squal)) { | |
331 | return sRef_setObserver; | |
332 | } else if (qual_isExposed (cl->squal)) { | |
333 | return sRef_setExposed; | |
334 | } else if (qual_isNotNull (cl->squal)) { | |
335 | return sRef_setNotNull; | |
336 | } else if (qual_isIsNull (cl->squal)) { | |
337 | return sRef_setDefNull; | |
338 | } else { | |
339 | BADBRANCH; | |
340 | } | |
341 | } | |
342 | ||
343 | BADBRANCH; | |
344 | } | |
345 | else | |
346 | { | |
347 | return NULL; | |
348 | } | |
349 | ||
8250fa4a | 350 | BADBRANCHNULL; |
28bf4b0b | 351 | } |
352 | ||
353 | sRefMod stateClause_getReturnEffectFunction (stateClause cl) | |
354 | { | |
355 | if (cl->state == TK_AFTER || cl->state == TK_BOTH) | |
356 | { | |
357 | switch (cl->kind) | |
358 | { | |
359 | case SP_USES: | |
360 | case SP_ALLOCATES: | |
361 | case SP_DEFINES: | |
362 | case SP_SETS: | |
363 | case SP_RELEASES: | |
364 | return NULL; | |
365 | case SP_GLOBAL: | |
366 | BADBRANCH; | |
367 | case SP_QUAL: | |
368 | if (qual_isOnly (cl->squal)) { | |
369 | return sRef_killComplete; | |
370 | } else { | |
371 | return NULL; | |
372 | } | |
373 | } | |
374 | ||
375 | BADBRANCH; | |
376 | } | |
377 | else | |
378 | { | |
379 | return NULL; | |
380 | } | |
381 | ||
8250fa4a | 382 | BADBRANCHNULL; |
28bf4b0b | 383 | } |
384 | ||
385 | static flagcode stateClause_qualErrorCode (stateClause cl) | |
386 | { | |
387 | if (qual_isOnly (cl->squal)) { | |
388 | return FLG_ONLYTRANS; | |
389 | } else if (qual_isShared (cl->squal)) { | |
390 | return FLG_SHAREDTRANS; | |
391 | } else if (qual_isDependent (cl->squal)) { | |
392 | return FLG_DEPENDENTTRANS; | |
393 | } else if (qual_isOwned (cl->squal)) { | |
394 | return FLG_OWNEDTRANS; | |
395 | } else if (qual_isObserver (cl->squal)) { | |
396 | return FLG_OBSERVERTRANS; | |
397 | } else if (qual_isExposed (cl->squal)) { | |
398 | return FLG_EXPOSETRANS; | |
399 | } else if (qual_isIsNull (cl->squal) | |
400 | || qual_isNotNull (cl->squal)) { | |
401 | return FLG_NULLSTATE; | |
402 | } else { | |
403 | BADBRANCH; | |
404 | } | |
8250fa4a | 405 | |
406 | BADBRANCHRET (INVALID_FLAG); | |
28bf4b0b | 407 | } |
408 | ||
409 | flagcode stateClause_preErrorCode (stateClause cl) | |
410 | { | |
411 | llassert (cl->state == TK_BOTH || cl->state == TK_BEFORE); | |
412 | ||
413 | switch (cl->kind) | |
414 | { | |
415 | case SP_USES: | |
416 | return FLG_USEDEF; | |
417 | case SP_ALLOCATES: /*@fallthrough@*/ | |
418 | case SP_DEFINES: | |
419 | case SP_SETS: | |
2e127cb8 | 420 | return FLG_MUSTFREEONLY; |
28bf4b0b | 421 | case SP_RELEASES: |
422 | return FLG_USEDEF; | |
423 | case SP_GLOBAL: | |
424 | case SP_QUAL: | |
425 | return stateClause_qualErrorCode (cl); | |
426 | } | |
427 | ||
8250fa4a | 428 | BADBRANCHRET (INVALID_FLAG); |
28bf4b0b | 429 | } |
430 | ||
431 | static /*@observer@*/ cstring stateClause_qualErrorString (stateClause cl, sRef sr) | |
432 | { | |
433 | if (qual_isMemoryAllocation (cl->squal)) { | |
434 | return alkind_capName (sRef_getAliasKind (sr)); | |
435 | } else if (qual_isObserver (cl->squal)) { | |
436 | return cstring_makeLiteralTemp ("Non-observer"); | |
437 | } else if (qual_isExposed (cl->squal)) { | |
438 | if (sRef_isObserver (sr)) | |
439 | { | |
440 | return cstring_makeLiteralTemp ("Observer"); | |
441 | } | |
442 | else | |
443 | { | |
444 | return cstring_makeLiteralTemp ("Non-exposed"); | |
445 | } | |
446 | } else if (qual_isNotNull (cl->squal)) { | |
447 | if (sRef_isDefinitelyNull (sr)) | |
448 | { | |
449 | return cstring_makeLiteralTemp ("Null"); | |
450 | } | |
451 | else | |
452 | { | |
453 | return cstring_makeLiteralTemp ("Possibly null"); | |
454 | } | |
455 | } else if (qual_isIsNull (cl->squal)) { | |
456 | return cstring_makeLiteralTemp ("Non-null"); | |
457 | } else { | |
458 | BADBRANCH; | |
459 | } | |
460 | ||
8250fa4a | 461 | BADBRANCHRET (cstring_undefined); |
28bf4b0b | 462 | } |
463 | ||
464 | cstring stateClause_preErrorString (stateClause cl, sRef sr) | |
465 | { | |
466 | llassert (cl->state == TK_BOTH || cl->state == TK_BEFORE); | |
467 | ||
468 | switch (cl->kind) | |
469 | { | |
470 | case SP_USES: | |
471 | if (sRef_isDead (sr)) | |
472 | return cstring_makeLiteralTemp ("Dead"); | |
473 | else | |
474 | return cstring_makeLiteralTemp ("Undefined"); | |
475 | case SP_ALLOCATES: /*@fallthrough@*/ | |
476 | case SP_DEFINES: | |
477 | case SP_SETS: | |
478 | return cstring_makeLiteralTemp ("Allocated"); | |
479 | case SP_RELEASES: | |
480 | if (sRef_isDead (sr)) | |
481 | { | |
482 | return cstring_makeLiteralTemp ("Dead"); | |
483 | } | |
484 | else if (sRef_isDependent (sr) | |
485 | || sRef_isShared (sr)) | |
486 | { | |
487 | return alkind_unparse (sRef_getAliasKind (sr)); | |
488 | } | |
489 | else if (sRef_isObserver (sr) || sRef_isExposed (sr)) | |
490 | { | |
491 | return exkind_unparse (sRef_getExKind (sr)); | |
492 | } | |
493 | else | |
494 | { | |
495 | return cstring_makeLiteralTemp ("Undefined"); | |
496 | } | |
497 | case SP_GLOBAL: | |
498 | BADBRANCH; | |
499 | case SP_QUAL: | |
500 | return stateClause_qualErrorString (cl, sr); | |
501 | } | |
502 | ||
503 | BADEXIT; | |
504 | } | |
505 | ||
506 | flagcode stateClause_postErrorCode (stateClause cl) | |
507 | { | |
508 | llassert (cl->state == TK_BOTH || cl->state == TK_AFTER); | |
509 | ||
510 | switch (cl->kind) | |
511 | { | |
512 | case SP_USES: | |
513 | BADBRANCHCONT; | |
514 | return INVALID_FLAG; | |
515 | case SP_ALLOCATES: | |
516 | case SP_DEFINES: | |
517 | case SP_SETS: | |
518 | return FLG_COMPDEF; | |
519 | case SP_RELEASES: | |
2e127cb8 | 520 | return FLG_MUSTFREEONLY; |
28bf4b0b | 521 | case SP_GLOBAL: |
522 | BADBRANCH; | |
523 | case SP_QUAL: | |
524 | return stateClause_qualErrorCode (cl); | |
525 | } | |
526 | ||
8250fa4a | 527 | BADBRANCHRET (INVALID_FLAG); |
28bf4b0b | 528 | } |
529 | ||
530 | cstring stateClause_postErrorString (stateClause cl, sRef sr) | |
531 | { | |
532 | llassert (cl->state == TK_BOTH || cl->state == TK_AFTER); | |
533 | ||
534 | switch (cl->kind) | |
535 | { | |
536 | case SP_USES: | |
537 | BADBRANCHCONT; | |
538 | return cstring_makeLiteralTemp ("<ERROR>"); | |
539 | case SP_ALLOCATES: | |
540 | return cstring_makeLiteralTemp ("Unallocated"); | |
541 | case SP_DEFINES: | |
542 | case SP_SETS: | |
543 | return cstring_makeLiteralTemp ("Undefined"); | |
544 | case SP_RELEASES: | |
545 | return cstring_makeLiteralTemp ("Unreleased"); | |
546 | case SP_GLOBAL: | |
547 | BADBRANCH; | |
548 | case SP_QUAL: | |
549 | return stateClause_qualErrorString (cl, sr); | |
550 | } | |
551 | ||
552 | BADEXIT; | |
553 | } | |
554 | ||
555 | cstring stateClause_dump (stateClause s) | |
556 | { | |
557 | return (message ("%d.%d.%q.%q", | |
558 | (int) s->state, | |
559 | (int) s->kind, | |
560 | qual_dump (s->squal), | |
561 | sRefSet_dump (s->refs))); | |
562 | } | |
563 | ||
564 | stateClause stateClause_undump (char **s) | |
565 | { | |
566 | stateClause ret = (stateClause) dmalloc (sizeof (*ret)); | |
567 | ||
568 | ret->loc = fileloc_undefined; | |
569 | ret->state = (stateConstraint) reader_getInt (s); | |
570 | reader_checkChar (s, '.'); | |
571 | ret->kind = (stateClauseKind) reader_getInt (s); | |
572 | reader_checkChar (s, '.'); | |
573 | ret->squal = qual_undump (s); | |
574 | reader_checkChar (s, '.'); | |
575 | ret->refs = sRefSet_undump (s); | |
576 | ||
577 | return ret; | |
578 | } | |
579 | ||
580 | stateClause stateClause_copy (stateClause s) | |
581 | { | |
582 | stateClause ret = (stateClause) dmalloc (sizeof (*ret)); | |
583 | ||
584 | ret->state = s->state; | |
585 | ret->kind = s->kind; | |
586 | ret->squal = s->squal; | |
587 | ret->refs = sRefSet_newCopy (s->refs); | |
588 | ret->loc = fileloc_copy (s->loc); | |
589 | ||
590 | return ret; | |
591 | } | |
592 | ||
593 | bool stateClause_sameKind (stateClause s1, stateClause s2) | |
594 | { | |
595 | return (s1->state == s2->state | |
596 | && s1->kind == s2->kind | |
597 | && qual_match (s1->squal, s2->squal)); | |
598 | } | |
599 | ||
600 | void stateClause_free (stateClause s) | |
601 | { | |
602 | sRefSet_free (s->refs); | |
603 | fileloc_free (s->loc); | |
604 | sfree (s); | |
605 | } | |
606 | ||
607 | static /*@observer@*/ cstring | |
608 | stateClauseKind_unparse (stateClause s) | |
609 | { | |
610 | switch (s->kind) | |
611 | { | |
612 | case SP_USES: | |
613 | return cstring_makeLiteralTemp ("uses"); | |
614 | case SP_DEFINES: | |
615 | return cstring_makeLiteralTemp ("defines"); | |
616 | case SP_ALLOCATES: | |
617 | return cstring_makeLiteralTemp ("allocates"); | |
618 | case SP_RELEASES: | |
619 | return cstring_makeLiteralTemp ("releases"); | |
620 | case SP_SETS: | |
621 | return cstring_makeLiteralTemp ("sets"); | |
622 | case SP_GLOBAL: | |
623 | return qual_unparse (s->squal); | |
624 | case SP_QUAL: | |
625 | return qual_unparse (s->squal); | |
626 | } | |
627 | ||
628 | BADEXIT; | |
629 | } | |
630 | ||
631 | cstring stateClause_unparseKind (stateClause s) | |
632 | { | |
633 | return | |
634 | (message ("%s%s", | |
635 | cstring_makeLiteralTemp (s->state == TK_BEFORE | |
636 | ? "requires " | |
637 | : (s->state == TK_AFTER | |
638 | ? "ensures " : "")), | |
639 | stateClauseKind_unparse (s))); | |
640 | } | |
641 | ||
642 | cstring stateClause_unparse (stateClause s) | |
643 | { | |
644 | return (message ("%q %q", | |
645 | stateClause_unparseKind (s), sRefSet_unparsePlain (s->refs))); | |
646 | } | |
647 | ||
648 | stateClause stateClause_createDefines (sRefSet s) | |
649 | { | |
650 | return (stateClause_createRaw (TK_BOTH, SP_DEFINES, s)); | |
651 | } | |
652 | ||
653 | stateClause stateClause_createUses (sRefSet s) | |
654 | { | |
655 | return (stateClause_createRaw (TK_BOTH, SP_USES, s)); | |
656 | } | |
657 | ||
658 | stateClause stateClause_createSets (sRefSet s) | |
659 | { | |
660 | return (stateClause_createRaw (TK_BOTH, SP_SETS, s)); | |
661 | } | |
662 | ||
663 | stateClause stateClause_createReleases (sRefSet s) | |
664 | { | |
665 | return (stateClause_createRaw (TK_BOTH, SP_RELEASES, s)); | |
666 | } | |
667 | ||
668 | stateClause stateClause_createPlain (lltok tok, sRefSet s) | |
669 | { | |
670 | switch (lltok_getTok (tok)) | |
671 | { | |
672 | case QUSES: | |
673 | return stateClause_createUses (s); | |
674 | case QDEFINES: | |
675 | return stateClause_createDefines (s); | |
676 | case QALLOCATES: | |
677 | return stateClause_createAllocates (s); | |
678 | case QSETS: | |
679 | return stateClause_createSets (s); | |
680 | case QRELEASES: | |
681 | return stateClause_createReleases (s); | |
682 | default: | |
683 | sRefSet_free (s); | |
684 | BADBRANCH; | |
685 | } | |
8250fa4a | 686 | |
687 | BADBRANCHRET (stateClause_createUses (sRefSet_undefined)); | |
28bf4b0b | 688 | } |
689 | ||
690 | stateClause stateClause_createAllocates (sRefSet s) | |
691 | { | |
692 | return (stateClause_createRaw (TK_BOTH, SP_ALLOCATES, s)); | |
693 | } | |
694 | ||
695 | bool stateClause_matchKind (stateClause s1, stateClause s2) | |
696 | { | |
697 | return (s1->state == s2->state && s1->kind == s2->kind | |
698 | && qual_match (s1->squal, s2->squal)); | |
699 | } | |
700 | ||
701 | bool stateClause_hasEnsures (stateClause cl) | |
702 | { | |
703 | return (cl->state == TK_AFTER && (cl->kind == SP_QUAL || cl->kind == SP_GLOBAL)); | |
704 | } | |
705 | ||
706 | bool stateClause_hasRequires (stateClause cl) | |
707 | { | |
708 | return (cl->state == TK_BEFORE && (cl->kind == SP_QUAL || cl->kind == SP_GLOBAL)); | |
709 | } | |
710 | ||
711 | bool stateClause_setsMetaState (stateClause cl) | |
712 | { | |
713 | return ((cl->kind == SP_QUAL || cl->kind == SP_GLOBAL) | |
714 | && qual_isMetaState (cl->squal)); | |
715 | } | |
716 | ||
717 | qual stateClause_getMetaQual (stateClause cl) | |
718 | { | |
719 | llassert (cl->kind == SP_QUAL || cl->kind == SP_GLOBAL); | |
720 | return cl->squal; | |
721 | } | |
722 | ||
723 | static sRefModVal stateClause_getStateFunction (stateClause cl) | |
724 | { | |
725 | qual sq; | |
726 | ||
727 | llassert (cl->kind == SP_QUAL || cl->kind == SP_GLOBAL); | |
728 | ||
729 | sq = cl->squal; | |
730 | ||
731 | /*@+enumint@*/ | |
732 | ||
733 | if (qual_isNullStateQual (sq)) | |
734 | { | |
735 | return (sRefModVal) sRef_setNullState; | |
736 | } | |
737 | else if (qual_isExQual (sq)) | |
738 | { | |
739 | return (sRefModVal) sRef_setExKind; | |
740 | } | |
741 | else if (qual_isAliasQual (sq)) | |
742 | { | |
743 | return (sRefModVal) sRef_setAliasKind; /*@i23 complete? @*/ | |
744 | } | |
745 | else | |
746 | { | |
747 | DPRINTF (("Unhandled ensures qual: %s", qual_unparse (sq))); | |
748 | BADBRANCH; | |
749 | } | |
750 | /*@=enumint@*/ | |
8250fa4a | 751 | BADBRANCHRET (NULL); |
28bf4b0b | 752 | } |
753 | ||
754 | int stateClause_getStateParameter (stateClause cl) | |
755 | { | |
756 | qual sq; | |
757 | ||
758 | llassert (cl->kind == SP_QUAL || cl->kind == SP_GLOBAL); | |
759 | ||
760 | sq = cl->squal; | |
761 | ||
762 | /*@+relaxtypes@*/ /*@i523 this is wrong, remove the enumint@*/ | |
763 | /*@+enumint@*/ | |
764 | ||
765 | if (qual_isNotNull (sq)) | |
766 | { | |
767 | return NS_MNOTNULL; | |
768 | } | |
769 | else if (qual_isIsNull (sq)) | |
770 | { | |
771 | return NS_DEFNULL; | |
772 | } | |
773 | else if (qual_isNull (sq)) | |
774 | { | |
775 | return NS_POSNULL; | |
776 | } | |
777 | else if (qual_isRelNull (sq)) | |
778 | { | |
779 | return NS_RELNULL; | |
780 | } | |
781 | else if (qual_isExposed (sq)) | |
782 | { | |
783 | return XO_EXPOSED; | |
784 | } | |
785 | else if (qual_isObserver (sq)) | |
786 | { | |
787 | return XO_OBSERVER; | |
788 | } | |
789 | else if (qual_isAliasQual (sq)) | |
790 | { | |
791 | if (qual_isOnly (sq)) return AK_ONLY; | |
792 | if (qual_isImpOnly (sq)) return AK_IMPONLY; | |
793 | if (qual_isTemp (sq)) return AK_TEMP; | |
794 | if (qual_isOwned (sq)) return AK_OWNED; | |
795 | if (qual_isShared (sq)) return AK_SHARED; | |
796 | if (qual_isUnique (sq)) return AK_UNIQUE; | |
797 | if (qual_isDependent (sq)) return AK_DEPENDENT; | |
798 | if (qual_isKeep (sq)) return AK_KEEP; | |
799 | if (qual_isKept (sq)) return AK_KEPT; | |
800 | BADBRANCH; | |
801 | } | |
802 | else | |
803 | { | |
804 | DPRINTF (("Unhandled ensures qual: %s", qual_unparse (sq))); | |
805 | BADBRANCH; | |
806 | } | |
807 | ||
808 | /*@=enumint@*/ | |
809 | /*@=relaxtypes@*/ | |
8250fa4a | 810 | BADBRANCHRET (0); |
28bf4b0b | 811 | } |
812 | ||
813 | sRefModVal stateClause_getEnsuresFunction (stateClause cl) | |
814 | { | |
815 | llassertprint (cl->state == TK_AFTER, ("Not after: %s", stateClause_unparse (cl))); | |
816 | llassert (cl->kind == SP_QUAL || cl->kind == SP_GLOBAL); | |
817 | return stateClause_getStateFunction (cl); | |
818 | } | |
819 | ||
820 | sRefModVal stateClause_getRequiresBodyFunction (stateClause cl) | |
821 | { | |
822 | llassertprint (cl->state == TK_BEFORE, ("Not before: %s", stateClause_unparse (cl))); | |
823 | llassert (cl->kind == SP_QUAL || cl->kind == SP_GLOBAL); | |
824 | return stateClause_getStateFunction (cl); | |
825 | } | |
826 | ||
827 | /*@observer@*/ fileloc stateClause_loc (stateClause s) | |
828 | { | |
829 | return s->loc; | |
830 | } | |
831 |