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1 | /* | |
2 | ** LCLint - annotation-assisted static program checker | |
3 | ** Copyright (C) 1994-2001 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 | ** stateClause.c | |
26 | */ | |
27 | ||
28 | # include "lclintMacros.nf" | |
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 | ||
101 | bool stateClause_isMemoryAllocation (stateClause cl) | |
102 | { | |
103 | switch (cl->kind) | |
104 | { | |
105 | case SP_ALLOCATES: | |
106 | case SP_RELEASES: | |
107 | return TRUE; | |
108 | case SP_USES: | |
109 | case SP_DEFINES: | |
110 | case SP_SETS: | |
111 | return FALSE; | |
112 | case SP_GLOBAL: | |
113 | return FALSE; | |
114 | case SP_QUAL: | |
115 | return (qual_isMemoryAllocation (cl->squal) | |
116 | || qual_isSharing (cl->squal)); | |
117 | } | |
118 | ||
119 | BADEXIT; | |
120 | } | |
121 | ||
122 | /* | |
123 | ** An error is reported if the test is NOT true. | |
124 | */ | |
125 | ||
126 | sRefTest stateClause_getPreTestFunction (stateClause cl) | |
127 | { | |
128 | switch (cl->kind) | |
129 | { | |
130 | case SP_USES: | |
131 | return sRef_isStrictReadable; | |
132 | case SP_ALLOCATES: | |
133 | return sRef_hasNoStorage; | |
134 | case SP_DEFINES: | |
135 | return sRef_hasNoStorage; | |
136 | case SP_SETS: | |
137 | return sRef_isNotUndefined; | |
138 | case SP_RELEASES: | |
139 | return sRef_isNotUndefined; | |
140 | case SP_GLOBAL: | |
141 | BADBRANCH; | |
142 | case SP_QUAL: | |
143 | { | |
144 | if (qual_isOnly (cl->squal)) { | |
145 | return sRef_isOnly; | |
146 | } else if (qual_isShared (cl->squal)) { | |
147 | return sRef_isShared; | |
148 | } else if (qual_isDependent (cl->squal)) { | |
149 | return sRef_isDependent; | |
150 | } else if (qual_isOwned (cl->squal)) { | |
151 | return sRef_isOwned; | |
152 | } else if (qual_isObserver (cl->squal)) { | |
153 | return sRef_isObserver; | |
154 | } else if (qual_isExposed (cl->squal)) { | |
155 | return sRef_isExposed; | |
156 | } else if (qual_isNotNull (cl->squal)) { | |
157 | return sRef_isNotNull; | |
158 | } else if (qual_isIsNull (cl->squal)) { | |
159 | return sRef_isDefinitelyNull; | |
160 | } else { | |
161 | BADBRANCH; | |
162 | } | |
163 | } | |
164 | } | |
165 | ||
166 | BADEXIT; | |
167 | } | |
168 | ||
169 | sRefTest stateClause_getPostTestFunction (stateClause cl) | |
170 | { | |
171 | llassert (stateClause_isAfter (cl)); | |
172 | ||
173 | switch (cl->kind) | |
174 | { | |
175 | case SP_USES: | |
176 | return NULL; | |
177 | case SP_ALLOCATES: | |
178 | return sRef_isAllocated; | |
179 | case SP_DEFINES: | |
180 | return sRef_isReallyDefined; | |
181 | case SP_SETS: | |
182 | return sRef_isReallyDefined; | |
183 | case SP_RELEASES: | |
184 | return sRef_isDeadStorage; | |
185 | case SP_GLOBAL: | |
186 | BADBRANCH; | |
187 | case SP_QUAL: | |
188 | if (qual_isOnly (cl->squal)) { | |
189 | return sRef_isOnly; | |
190 | } else if (qual_isShared (cl->squal)) { | |
191 | return sRef_isShared; | |
192 | } else if (qual_isDependent (cl->squal)) { | |
193 | return sRef_isDependent; | |
194 | } else if (qual_isOwned (cl->squal)) { | |
195 | return sRef_isOwned; | |
196 | } else if (qual_isObserver (cl->squal)) { | |
197 | return sRef_isObserver; | |
198 | } else if (qual_isExposed (cl->squal)) { | |
199 | return sRef_isExposed; | |
200 | } else if (qual_isNotNull (cl->squal)) { | |
201 | return sRef_isNotNull; | |
202 | } else if (qual_isIsNull (cl->squal)) { | |
203 | return sRef_isDefinitelyNull; | |
204 | } else { | |
205 | BADBRANCH; | |
206 | } | |
207 | } | |
208 | ||
209 | BADEXIT; | |
210 | } | |
211 | ||
212 | sRefShower stateClause_getPostTestShower (stateClause cl) | |
213 | { | |
214 | switch (cl->kind) | |
215 | { | |
216 | case SP_USES: | |
217 | case SP_ALLOCATES: | |
218 | return NULL; | |
219 | case SP_DEFINES: | |
220 | case SP_SETS: | |
221 | return sRef_showNotReallyDefined; | |
222 | case SP_RELEASES: | |
223 | return NULL; | |
224 | case SP_GLOBAL: | |
225 | BADBRANCH; | |
226 | case SP_QUAL: | |
227 | if (qual_isMemoryAllocation (cl->squal)) { | |
228 | return sRef_showAliasInfo; | |
229 | } else if (qual_isSharing (cl->squal)) { | |
230 | return sRef_showExpInfo; | |
231 | } else if (qual_isIsNull (cl->squal) || qual_isNotNull (cl->squal)) { | |
232 | return sRef_showNullInfo; | |
233 | } else { | |
234 | BADBRANCH; | |
235 | } | |
236 | } | |
237 | ||
238 | BADEXIT; | |
239 | } | |
240 | ||
241 | sRefMod stateClause_getEntryFunction (stateClause cl) | |
242 | { | |
243 | if (cl->state == TK_BEFORE || cl->state == TK_BOTH) | |
244 | { | |
245 | switch (cl->kind) | |
246 | { | |
247 | case SP_USES: | |
248 | return sRef_setDefinedComplete; | |
249 | case SP_ALLOCATES: | |
250 | return NULL; | |
251 | case SP_DEFINES: | |
252 | return NULL; | |
253 | case SP_SETS: | |
254 | return sRef_setAllocatedComplete; | |
255 | case SP_RELEASES: | |
256 | return sRef_setDefinedComplete; | |
257 | case SP_GLOBAL: | |
258 | BADBRANCH; | |
259 | case SP_QUAL: | |
260 | if (qual_isOnly (cl->squal)) { | |
261 | return sRef_setOnly; | |
262 | } else if (qual_isShared (cl->squal)) { | |
263 | return sRef_setShared; | |
264 | } else if (qual_isDependent (cl->squal)) { | |
265 | return sRef_setDependent; | |
266 | } else if (qual_isOwned (cl->squal)) { | |
267 | return sRef_setOwned; | |
268 | } else if (qual_isObserver (cl->squal)) { | |
269 | return sRef_setObserver; | |
270 | } else if (qual_isExposed (cl->squal)) { | |
271 | return sRef_setExposed; | |
272 | } else if (qual_isNotNull (cl->squal)) { | |
273 | return sRef_setNotNull; | |
274 | } else if (qual_isIsNull (cl->squal)) { | |
275 | return sRef_setDefNull; | |
276 | } else { | |
277 | DPRINTF (("Here we are: %s", | |
278 | qual_unparse (cl->squal))); | |
279 | BADBRANCH; | |
280 | } | |
281 | } | |
282 | ||
283 | BADBRANCH; | |
284 | } | |
285 | else | |
286 | { | |
287 | return NULL; | |
288 | } | |
289 | ||
290 | BADBRANCHNULL; | |
291 | } | |
292 | ||
293 | sRefMod stateClause_getEffectFunction (stateClause cl) | |
294 | { | |
295 | if (cl->state == TK_AFTER || cl->state == TK_BOTH) | |
296 | { | |
297 | switch (cl->kind) | |
298 | { | |
299 | case SP_USES: | |
300 | return NULL; | |
301 | case SP_ALLOCATES: | |
302 | return sRef_setAllocatedComplete; | |
303 | case SP_DEFINES: | |
304 | return sRef_setDefinedNCComplete; | |
305 | case SP_SETS: | |
306 | return sRef_setDefinedNCComplete; | |
307 | case SP_RELEASES: | |
308 | return sRef_killComplete; | |
309 | case SP_GLOBAL: | |
310 | BADBRANCH; | |
311 | case SP_QUAL: | |
312 | if (qual_isOnly (cl->squal)) { | |
313 | return sRef_setOnly; | |
314 | } else if (qual_isShared (cl->squal)) { | |
315 | return sRef_setShared; | |
316 | } else if (qual_isDependent (cl->squal)) { | |
317 | return sRef_setDependent; | |
318 | } else if (qual_isOwned (cl->squal)) { | |
319 | return sRef_setOwned; | |
320 | } else if (qual_isObserver (cl->squal)) { | |
321 | return sRef_setObserver; | |
322 | } else if (qual_isExposed (cl->squal)) { | |
323 | return sRef_setExposed; | |
324 | } else if (qual_isNotNull (cl->squal)) { | |
325 | return sRef_setNotNull; | |
326 | } else if (qual_isIsNull (cl->squal)) { | |
327 | return sRef_setDefNull; | |
328 | } else { | |
329 | BADBRANCH; | |
330 | } | |
331 | } | |
332 | ||
333 | BADBRANCH; | |
334 | } | |
335 | else | |
336 | { | |
337 | return NULL; | |
338 | } | |
339 | ||
340 | BADBRANCHNULL; | |
341 | } | |
342 | ||
343 | sRefMod stateClause_getReturnEffectFunction (stateClause cl) | |
344 | { | |
345 | if (cl->state == TK_AFTER || cl->state == TK_BOTH) | |
346 | { | |
347 | switch (cl->kind) | |
348 | { | |
349 | case SP_USES: | |
350 | case SP_ALLOCATES: | |
351 | case SP_DEFINES: | |
352 | case SP_SETS: | |
353 | case SP_RELEASES: | |
354 | return NULL; | |
355 | case SP_GLOBAL: | |
356 | BADBRANCH; | |
357 | case SP_QUAL: | |
358 | if (qual_isOnly (cl->squal)) { | |
359 | return sRef_killComplete; | |
360 | } else { | |
361 | return NULL; | |
362 | } | |
363 | } | |
364 | ||
365 | BADBRANCH; | |
366 | } | |
367 | else | |
368 | { | |
369 | return NULL; | |
370 | } | |
371 | ||
372 | BADBRANCHNULL; | |
373 | } | |
374 | ||
375 | static flagcode stateClause_qualErrorCode (stateClause cl) | |
376 | { | |
377 | if (qual_isOnly (cl->squal)) { | |
378 | return FLG_ONLYTRANS; | |
379 | } else if (qual_isShared (cl->squal)) { | |
380 | return FLG_SHAREDTRANS; | |
381 | } else if (qual_isDependent (cl->squal)) { | |
382 | return FLG_DEPENDENTTRANS; | |
383 | } else if (qual_isOwned (cl->squal)) { | |
384 | return FLG_OWNEDTRANS; | |
385 | } else if (qual_isObserver (cl->squal)) { | |
386 | return FLG_OBSERVERTRANS; | |
387 | } else if (qual_isExposed (cl->squal)) { | |
388 | return FLG_EXPOSETRANS; | |
389 | } else if (qual_isIsNull (cl->squal) | |
390 | || qual_isNotNull (cl->squal)) { | |
391 | return FLG_NULLSTATE; | |
392 | } else { | |
393 | BADBRANCH; | |
394 | } | |
395 | ||
396 | BADBRANCHRET (INVALID_FLAG); | |
397 | } | |
398 | ||
399 | flagcode stateClause_preErrorCode (stateClause cl) | |
400 | { | |
401 | llassert (cl->state == TK_BOTH || cl->state == TK_BEFORE); | |
402 | ||
403 | switch (cl->kind) | |
404 | { | |
405 | case SP_USES: | |
406 | return FLG_USEDEF; | |
407 | case SP_ALLOCATES: /*@fallthrough@*/ | |
408 | case SP_DEFINES: | |
409 | case SP_SETS: | |
410 | return FLG_MUSTFREE; | |
411 | case SP_RELEASES: | |
412 | return FLG_USEDEF; | |
413 | case SP_GLOBAL: | |
414 | case SP_QUAL: | |
415 | return stateClause_qualErrorCode (cl); | |
416 | } | |
417 | ||
418 | BADBRANCHRET (INVALID_FLAG); | |
419 | } | |
420 | ||
421 | static /*@observer@*/ cstring stateClause_qualErrorString (stateClause cl, sRef sr) | |
422 | { | |
423 | if (qual_isMemoryAllocation (cl->squal)) { | |
424 | return alkind_capName (sRef_getAliasKind (sr)); | |
425 | } else if (qual_isObserver (cl->squal)) { | |
426 | return cstring_makeLiteralTemp ("Non-observer"); | |
427 | } else if (qual_isExposed (cl->squal)) { | |
428 | if (sRef_isObserver (sr)) | |
429 | { | |
430 | return cstring_makeLiteralTemp ("Observer"); | |
431 | } | |
432 | else | |
433 | { | |
434 | return cstring_makeLiteralTemp ("Non-exposed"); | |
435 | } | |
436 | } else if (qual_isNotNull (cl->squal)) { | |
437 | if (sRef_isDefinitelyNull (sr)) | |
438 | { | |
439 | return cstring_makeLiteralTemp ("Null"); | |
440 | } | |
441 | else | |
442 | { | |
443 | return cstring_makeLiteralTemp ("Possibly null"); | |
444 | } | |
445 | } else if (qual_isIsNull (cl->squal)) { | |
446 | return cstring_makeLiteralTemp ("Non-null"); | |
447 | } else { | |
448 | BADBRANCH; | |
449 | } | |
450 | ||
451 | BADBRANCHRET (cstring_undefined); | |
452 | } | |
453 | ||
454 | cstring stateClause_preErrorString (stateClause cl, sRef sr) | |
455 | { | |
456 | llassert (cl->state == TK_BOTH || cl->state == TK_BEFORE); | |
457 | ||
458 | switch (cl->kind) | |
459 | { | |
460 | case SP_USES: | |
461 | if (sRef_isDead (sr)) | |
462 | return cstring_makeLiteralTemp ("Dead"); | |
463 | else | |
464 | return cstring_makeLiteralTemp ("Undefined"); | |
465 | case SP_ALLOCATES: /*@fallthrough@*/ | |
466 | case SP_DEFINES: | |
467 | case SP_SETS: | |
468 | return cstring_makeLiteralTemp ("Allocated"); | |
469 | case SP_RELEASES: | |
470 | if (sRef_isDead (sr)) | |
471 | { | |
472 | return cstring_makeLiteralTemp ("Dead"); | |
473 | } | |
474 | else if (sRef_isDependent (sr) | |
475 | || sRef_isShared (sr)) | |
476 | { | |
477 | return alkind_unparse (sRef_getAliasKind (sr)); | |
478 | } | |
479 | else if (sRef_isObserver (sr) || sRef_isExposed (sr)) | |
480 | { | |
481 | return exkind_unparse (sRef_getExKind (sr)); | |
482 | } | |
483 | else | |
484 | { | |
485 | return cstring_makeLiteralTemp ("Undefined"); | |
486 | } | |
487 | case SP_GLOBAL: | |
488 | BADBRANCH; | |
489 | case SP_QUAL: | |
490 | return stateClause_qualErrorString (cl, sr); | |
491 | } | |
492 | ||
493 | BADEXIT; | |
494 | } | |
495 | ||
496 | flagcode stateClause_postErrorCode (stateClause cl) | |
497 | { | |
498 | llassert (cl->state == TK_BOTH || cl->state == TK_AFTER); | |
499 | ||
500 | switch (cl->kind) | |
501 | { | |
502 | case SP_USES: | |
503 | BADBRANCHCONT; | |
504 | return INVALID_FLAG; | |
505 | case SP_ALLOCATES: | |
506 | case SP_DEFINES: | |
507 | case SP_SETS: | |
508 | return FLG_COMPDEF; | |
509 | case SP_RELEASES: | |
510 | return FLG_MUSTFREE; | |
511 | case SP_GLOBAL: | |
512 | BADBRANCH; | |
513 | case SP_QUAL: | |
514 | return stateClause_qualErrorCode (cl); | |
515 | } | |
516 | ||
517 | BADBRANCHRET (INVALID_FLAG); | |
518 | } | |
519 | ||
520 | cstring stateClause_postErrorString (stateClause cl, sRef sr) | |
521 | { | |
522 | llassert (cl->state == TK_BOTH || cl->state == TK_AFTER); | |
523 | ||
524 | switch (cl->kind) | |
525 | { | |
526 | case SP_USES: | |
527 | BADBRANCHCONT; | |
528 | return cstring_makeLiteralTemp ("<ERROR>"); | |
529 | case SP_ALLOCATES: | |
530 | return cstring_makeLiteralTemp ("Unallocated"); | |
531 | case SP_DEFINES: | |
532 | case SP_SETS: | |
533 | return cstring_makeLiteralTemp ("Undefined"); | |
534 | case SP_RELEASES: | |
535 | return cstring_makeLiteralTemp ("Unreleased"); | |
536 | case SP_GLOBAL: | |
537 | BADBRANCH; | |
538 | case SP_QUAL: | |
539 | return stateClause_qualErrorString (cl, sr); | |
540 | } | |
541 | ||
542 | BADEXIT; | |
543 | } | |
544 | ||
545 | cstring stateClause_dump (stateClause s) | |
546 | { | |
547 | return (message ("%d.%d.%q.%q", | |
548 | (int) s->state, | |
549 | (int) s->kind, | |
550 | qual_dump (s->squal), | |
551 | sRefSet_dump (s->refs))); | |
552 | } | |
553 | ||
554 | stateClause stateClause_undump (char **s) | |
555 | { | |
556 | stateClause ret = (stateClause) dmalloc (sizeof (*ret)); | |
557 | ||
558 | ret->loc = fileloc_undefined; | |
559 | ret->state = (stateConstraint) reader_getInt (s); | |
560 | reader_checkChar (s, '.'); | |
561 | ret->kind = (stateClauseKind) reader_getInt (s); | |
562 | reader_checkChar (s, '.'); | |
563 | ret->squal = qual_undump (s); | |
564 | reader_checkChar (s, '.'); | |
565 | ret->refs = sRefSet_undump (s); | |
566 | ||
567 | return ret; | |
568 | } | |
569 | ||
570 | stateClause stateClause_copy (stateClause s) | |
571 | { | |
572 | stateClause ret = (stateClause) dmalloc (sizeof (*ret)); | |
573 | ||
574 | ret->state = s->state; | |
575 | ret->kind = s->kind; | |
576 | ret->squal = s->squal; | |
577 | ret->refs = sRefSet_newCopy (s->refs); | |
578 | ret->loc = fileloc_copy (s->loc); | |
579 | ||
580 | return ret; | |
581 | } | |
582 | ||
583 | bool stateClause_sameKind (stateClause s1, stateClause s2) | |
584 | { | |
585 | return (s1->state == s2->state | |
586 | && s1->kind == s2->kind | |
587 | && qual_match (s1->squal, s2->squal)); | |
588 | } | |
589 | ||
590 | void stateClause_free (stateClause s) | |
591 | { | |
592 | sRefSet_free (s->refs); | |
593 | fileloc_free (s->loc); | |
594 | sfree (s); | |
595 | } | |
596 | ||
597 | static /*@observer@*/ cstring | |
598 | stateClauseKind_unparse (stateClause s) | |
599 | { | |
600 | switch (s->kind) | |
601 | { | |
602 | case SP_USES: | |
603 | return cstring_makeLiteralTemp ("uses"); | |
604 | case SP_DEFINES: | |
605 | return cstring_makeLiteralTemp ("defines"); | |
606 | case SP_ALLOCATES: | |
607 | return cstring_makeLiteralTemp ("allocates"); | |
608 | case SP_RELEASES: | |
609 | return cstring_makeLiteralTemp ("releases"); | |
610 | case SP_SETS: | |
611 | return cstring_makeLiteralTemp ("sets"); | |
612 | case SP_GLOBAL: | |
613 | return qual_unparse (s->squal); | |
614 | case SP_QUAL: | |
615 | return qual_unparse (s->squal); | |
616 | } | |
617 | ||
618 | BADEXIT; | |
619 | } | |
620 | ||
621 | cstring stateClause_unparseKind (stateClause s) | |
622 | { | |
623 | return | |
624 | (message ("%s%s", | |
625 | cstring_makeLiteralTemp (s->state == TK_BEFORE | |
626 | ? "requires " | |
627 | : (s->state == TK_AFTER | |
628 | ? "ensures " : "")), | |
629 | stateClauseKind_unparse (s))); | |
630 | } | |
631 | ||
632 | cstring stateClause_unparse (stateClause s) | |
633 | { | |
634 | return (message ("%q %q", | |
635 | stateClause_unparseKind (s), sRefSet_unparsePlain (s->refs))); | |
636 | } | |
637 | ||
638 | stateClause stateClause_createDefines (sRefSet s) | |
639 | { | |
640 | return (stateClause_createRaw (TK_BOTH, SP_DEFINES, s)); | |
641 | } | |
642 | ||
643 | stateClause stateClause_createUses (sRefSet s) | |
644 | { | |
645 | return (stateClause_createRaw (TK_BOTH, SP_USES, s)); | |
646 | } | |
647 | ||
648 | stateClause stateClause_createSets (sRefSet s) | |
649 | { | |
650 | return (stateClause_createRaw (TK_BOTH, SP_SETS, s)); | |
651 | } | |
652 | ||
653 | stateClause stateClause_createReleases (sRefSet s) | |
654 | { | |
655 | return (stateClause_createRaw (TK_BOTH, SP_RELEASES, s)); | |
656 | } | |
657 | ||
658 | stateClause stateClause_createPlain (lltok tok, sRefSet s) | |
659 | { | |
660 | switch (lltok_getTok (tok)) | |
661 | { | |
662 | case QUSES: | |
663 | return stateClause_createUses (s); | |
664 | case QDEFINES: | |
665 | return stateClause_createDefines (s); | |
666 | case QALLOCATES: | |
667 | return stateClause_createAllocates (s); | |
668 | case QSETS: | |
669 | return stateClause_createSets (s); | |
670 | case QRELEASES: | |
671 | return stateClause_createReleases (s); | |
672 | default: | |
673 | sRefSet_free (s); | |
674 | BADBRANCH; | |
675 | } | |
676 | ||
677 | BADBRANCHRET (stateClause_createUses (sRefSet_undefined)); | |
678 | } | |
679 | ||
680 | stateClause stateClause_createAllocates (sRefSet s) | |
681 | { | |
682 | return (stateClause_createRaw (TK_BOTH, SP_ALLOCATES, s)); | |
683 | } | |
684 | ||
685 | bool stateClause_matchKind (stateClause s1, stateClause s2) | |
686 | { | |
687 | return (s1->state == s2->state && s1->kind == s2->kind | |
688 | && qual_match (s1->squal, s2->squal)); | |
689 | } | |
690 | ||
691 | bool stateClause_hasEnsures (stateClause cl) | |
692 | { | |
693 | return (cl->state == TK_AFTER && (cl->kind == SP_QUAL || cl->kind == SP_GLOBAL)); | |
694 | } | |
695 | ||
696 | bool stateClause_hasRequires (stateClause cl) | |
697 | { | |
698 | return (cl->state == TK_BEFORE && (cl->kind == SP_QUAL || cl->kind == SP_GLOBAL)); | |
699 | } | |
700 | ||
701 | bool stateClause_setsMetaState (stateClause cl) | |
702 | { | |
703 | return ((cl->kind == SP_QUAL || cl->kind == SP_GLOBAL) | |
704 | && qual_isMetaState (cl->squal)); | |
705 | } | |
706 | ||
707 | qual stateClause_getMetaQual (stateClause cl) | |
708 | { | |
709 | llassert (cl->kind == SP_QUAL || cl->kind == SP_GLOBAL); | |
710 | return cl->squal; | |
711 | } | |
712 | ||
713 | static sRefModVal stateClause_getStateFunction (stateClause cl) | |
714 | { | |
715 | qual sq; | |
716 | ||
717 | llassert (cl->kind == SP_QUAL || cl->kind == SP_GLOBAL); | |
718 | ||
719 | sq = cl->squal; | |
720 | ||
721 | /*@+enumint@*/ | |
722 | ||
723 | if (qual_isNullStateQual (sq)) | |
724 | { | |
725 | return (sRefModVal) sRef_setNullState; | |
726 | } | |
727 | else if (qual_isExQual (sq)) | |
728 | { | |
729 | return (sRefModVal) sRef_setExKind; | |
730 | } | |
731 | else if (qual_isAliasQual (sq)) | |
732 | { | |
733 | return (sRefModVal) sRef_setAliasKind; /*@i23 complete? @*/ | |
734 | } | |
735 | else | |
736 | { | |
737 | DPRINTF (("Unhandled ensures qual: %s", qual_unparse (sq))); | |
738 | BADBRANCH; | |
739 | } | |
740 | /*@=enumint@*/ | |
741 | BADBRANCHRET (NULL); | |
742 | } | |
743 | ||
744 | int stateClause_getStateParameter (stateClause cl) | |
745 | { | |
746 | qual sq; | |
747 | ||
748 | llassert (cl->kind == SP_QUAL || cl->kind == SP_GLOBAL); | |
749 | ||
750 | sq = cl->squal; | |
751 | ||
752 | /*@+relaxtypes@*/ /*@i523 this is wrong, remove the enumint@*/ | |
753 | /*@+enumint@*/ | |
754 | ||
755 | if (qual_isNotNull (sq)) | |
756 | { | |
757 | return NS_MNOTNULL; | |
758 | } | |
759 | else if (qual_isIsNull (sq)) | |
760 | { | |
761 | return NS_DEFNULL; | |
762 | } | |
763 | else if (qual_isNull (sq)) | |
764 | { | |
765 | return NS_POSNULL; | |
766 | } | |
767 | else if (qual_isRelNull (sq)) | |
768 | { | |
769 | return NS_RELNULL; | |
770 | } | |
771 | else if (qual_isExposed (sq)) | |
772 | { | |
773 | return XO_EXPOSED; | |
774 | } | |
775 | else if (qual_isObserver (sq)) | |
776 | { | |
777 | return XO_OBSERVER; | |
778 | } | |
779 | else if (qual_isAliasQual (sq)) | |
780 | { | |
781 | if (qual_isOnly (sq)) return AK_ONLY; | |
782 | if (qual_isImpOnly (sq)) return AK_IMPONLY; | |
783 | if (qual_isTemp (sq)) return AK_TEMP; | |
784 | if (qual_isOwned (sq)) return AK_OWNED; | |
785 | if (qual_isShared (sq)) return AK_SHARED; | |
786 | if (qual_isUnique (sq)) return AK_UNIQUE; | |
787 | if (qual_isDependent (sq)) return AK_DEPENDENT; | |
788 | if (qual_isKeep (sq)) return AK_KEEP; | |
789 | if (qual_isKept (sq)) return AK_KEPT; | |
790 | BADBRANCH; | |
791 | } | |
792 | else | |
793 | { | |
794 | DPRINTF (("Unhandled ensures qual: %s", qual_unparse (sq))); | |
795 | BADBRANCH; | |
796 | } | |
797 | ||
798 | /*@=enumint@*/ | |
799 | /*@=relaxtypes@*/ | |
800 | BADBRANCHRET (0); | |
801 | } | |
802 | ||
803 | sRefModVal stateClause_getEnsuresFunction (stateClause cl) | |
804 | { | |
805 | llassertprint (cl->state == TK_AFTER, ("Not after: %s", stateClause_unparse (cl))); | |
806 | llassert (cl->kind == SP_QUAL || cl->kind == SP_GLOBAL); | |
807 | return stateClause_getStateFunction (cl); | |
808 | } | |
809 | ||
810 | sRefModVal stateClause_getRequiresBodyFunction (stateClause cl) | |
811 | { | |
812 | llassertprint (cl->state == TK_BEFORE, ("Not before: %s", stateClause_unparse (cl))); | |
813 | llassert (cl->kind == SP_QUAL || cl->kind == SP_GLOBAL); | |
814 | return stateClause_getStateFunction (cl); | |
815 | } | |
816 | ||
817 | /*@observer@*/ fileloc stateClause_loc (stateClause s) | |
818 | { | |
819 | return s->loc; | |
820 | } | |
821 |