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616915dd | 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 | ** clabstract.c | |
26 | ** | |
27 | ** ASTs for C grammar | |
28 | ** | |
29 | */ | |
30 | ||
31 | # include "lclintMacros.nf" | |
32 | # include "llbasic.h" | |
33 | # include "cgrammar.h" | |
34 | ||
35 | # ifndef NOLCL | |
36 | # include "usymtab_interface.h" | |
37 | # endif | |
38 | ||
39 | # include "structNames.h" | |
40 | # include "nameChecks.h" | |
41 | ||
42 | # ifdef SANITIZER | |
43 | # include "sgrammar_tokens.h" | |
44 | # else | |
45 | # include "cgrammar_tokens.h" | |
46 | # endif | |
47 | ||
48 | /* | |
49 | ** Lots of variables are needed because of interactions with the | |
50 | ** parser. This is easier than restructuring the grammar so the | |
51 | ** right values are available in the right place. | |
52 | */ | |
53 | ||
54 | /*drl*/ | |
dc92450f | 55 | /*@only@*/ static constraintList fcnConstraints = NULL; |
616915dd | 56 | |
dc92450f | 57 | /*@only@*/ static constraintList fcnEnsuresConstraints = NULL; |
616915dd | 58 | /*end drl*/ |
59 | ||
470b7798 | 60 | /*drl */ |
61 | /*@only@*/ constraintList implicitFcnConstraints = NULL; | |
62 | ||
63 | ||
616915dd | 64 | //static constraintList fcnPreConditions = NULL; |
65 | ||
66 | ||
67 | static /*@only@*/ sRefSet fcnModifies = sRefSet_undefined; | |
68 | static /*@only@*/ /*@null@*/ specialClauses specClauses = specialClauses_undefined; | |
69 | static bool fcnNoGlobals = FALSE; | |
70 | static bool ProcessingVars = FALSE; | |
71 | static bool ProcessingParams = FALSE; | |
72 | static bool ProcessingGlobals = FALSE; | |
73 | static bool ProcessingTypedef = FALSE; | |
74 | static bool ProcessingIterVars = FALSE; | |
75 | static /*@only@*/ qtype processingType = qtype_undefined; | |
76 | static uentry currentIter = uentry_undefined; | |
77 | static globSet currentGlobals = globSet_undefined; | |
78 | static /*@dependent@*/ uentryList saveParamList; /* for old style functions */ | |
79 | static /*@owned@*/ uentry saveFunction = uentry_undefined; | |
80 | static int saveIterParamNo; | |
81 | static idDecl fixStructDecl (/*@returned@*/ idDecl p_d); | |
82 | static void checkTypeDecl (uentry p_e, ctype p_rep); | |
83 | static /*@dependent@*/ fileloc saveStoreLoc = fileloc_undefined; | |
84 | static storageClassCode storageClass = SCNONE; | |
85 | static void declareEnumList (/*@temp@*/ enumNameList p_el, ctype p_c, fileloc p_loc); | |
86 | static void resetGlobals (void); | |
87 | static qual specialFunctionCode = QU_UNKNOWN; | |
88 | static bool argsUsed = FALSE; | |
89 | ||
90 | static bool hasSpecialCode (void) | |
91 | { | |
92 | return (specialFunctionCode != QU_UNKNOWN); | |
93 | } | |
94 | ||
95 | extern void setArgsUsed (void) | |
96 | { | |
97 | if (argsUsed) | |
98 | { | |
99 | voptgenerror | |
100 | (FLG_SYNTAX, | |
101 | cstring_makeLiteral ("Multiple ARGSUSED comments for one function"), | |
102 | g_currentloc); | |
103 | } | |
104 | ||
105 | argsUsed = TRUE; | |
106 | } | |
107 | ||
108 | static void reflectArgsUsed (uentry ue) | |
109 | { | |
110 | if (argsUsed) | |
111 | { | |
112 | if (uentry_isFunction (ue)) | |
113 | { | |
114 | uentryList params = uentry_getParams (ue); | |
115 | ||
116 | uentryList_elements (params, el) | |
117 | { | |
118 | uentry_setUsed (el, fileloc_undefined); | |
119 | } end_uentryList_elements ; | |
120 | } | |
121 | ||
122 | argsUsed = FALSE; | |
123 | } | |
124 | } | |
125 | ||
126 | extern void setSpecialFunction (qual qu) | |
127 | { | |
128 | if (specialFunctionCode != QU_UNKNOWN) | |
129 | { | |
130 | voptgenerror (FLG_SYNTAX, | |
131 | message ("Multiple special function codes: %s, %s " | |
132 | "(first code is ignored)", | |
133 | qual_unparse (specialFunctionCode), | |
134 | qual_unparse (qu)), | |
135 | g_currentloc); | |
136 | } | |
137 | ||
138 | specialFunctionCode = qu; | |
139 | } | |
140 | ||
141 | static void reflectSpecialCode (uentry ue) | |
142 | { | |
143 | switch (specialFunctionCode) | |
144 | { | |
145 | case QU_UNKNOWN: break; | |
146 | case QU_PRINTFLIKE: | |
147 | uentry_setPrintfLike (ue); | |
148 | break; | |
149 | case QU_SCANFLIKE: | |
150 | uentry_setScanfLike (ue); | |
151 | break; | |
152 | case QU_MESSAGELIKE: | |
153 | uentry_setMessageLike (ue); | |
154 | break; | |
155 | BADDEFAULT; | |
156 | } | |
157 | ||
158 | specialFunctionCode = QU_UNKNOWN; | |
159 | } | |
160 | ||
161 | static void resetStorageClass (void) | |
162 | { | |
163 | qtype_free (processingType); | |
164 | processingType = qtype_undefined; | |
165 | storageClass = SCNONE; | |
166 | } | |
167 | ||
168 | static void reflectModGlobs (uentry ue) | |
169 | { | |
170 | if (fcnNoGlobals) | |
171 | { | |
172 | llassert (globSet_isUndefined (currentGlobals)); | |
173 | ||
174 | uentry_setGlobals (ue, globSet_undefined); | |
175 | fcnNoGlobals = FALSE; | |
176 | } | |
177 | else if (globSet_isDefined (currentGlobals)) | |
178 | { | |
179 | uentry_setGlobals (ue, currentGlobals); | |
180 | currentGlobals = globSet_undefined; | |
181 | } | |
182 | else | |
183 | { | |
184 | ; /* no globals */ | |
185 | } | |
186 | ||
187 | if (sRefSet_isDefined (fcnModifies)) | |
188 | { | |
189 | uentry_setModifies (ue, fcnModifies); | |
190 | fcnModifies = sRefSet_undefined; | |
191 | } | |
192 | /*drl added*/ | |
193 | if (fcnConstraints) | |
194 | { | |
195 | uentry_setPreconditions (ue, fcnConstraints); | |
196 | fcnConstraints = constraintList_undefined; | |
197 | } | |
198 | ||
199 | if (fcnEnsuresConstraints) | |
200 | { | |
201 | uentry_setPostconditions (ue, fcnEnsuresConstraints); | |
202 | fcnEnsuresConstraints = constraintList_undefined; | |
203 | } | |
204 | /*end drl*/ | |
205 | ||
206 | if (uentry_isFunction (ue)) | |
207 | { | |
208 | uentry_setSpecialClauses (ue, specClauses); | |
209 | specClauses = NULL; | |
210 | DPRINTF (("Done with spec clauses")); | |
211 | } | |
212 | } | |
213 | ||
214 | static void reflectStorageClass (uentry u) | |
215 | { | |
216 | if (storageClass == SCSTATIC) | |
217 | { | |
218 | uentry_setStatic (u); | |
219 | } | |
220 | else if (storageClass == SCEXTERN) | |
221 | { | |
222 | uentry_setExtern (u); | |
223 | } | |
224 | else | |
225 | { | |
226 | ; /* no storage class */ | |
227 | } | |
228 | ||
229 | } | |
230 | ||
231 | void storeLoc () | |
232 | { | |
233 | saveStoreLoc = g_currentloc; | |
234 | } | |
235 | ||
236 | void setFunctionNoGlobals (void) | |
237 | { | |
238 | llassert (globSet_isUndefined (currentGlobals)); | |
239 | fcnNoGlobals = TRUE; | |
240 | } | |
241 | ||
242 | void | |
243 | setFunctionStateSpecialClause (lltok stok, specialClauseKind kind, | |
244 | sRefSet s, | |
245 | /*@unused@*/ lltok etok) | |
246 | { | |
247 | int tok = lltok_getTok (stok); | |
248 | ||
249 | switch (tok) | |
250 | { | |
251 | case QPRECLAUSE: | |
252 | specClauses = specialClauses_add (specClauses, | |
253 | specialClause_create (TK_BEFORE, kind, s)); | |
254 | break; | |
255 | case QPOSTCLAUSE: | |
256 | specClauses = specialClauses_add (specClauses, | |
257 | specialClause_create (TK_AFTER, kind, s)); | |
258 | break; | |
259 | default: | |
260 | sRefSet_free (s); | |
261 | BADBRANCH; | |
262 | } | |
263 | ||
264 | DPRINTF (("Added to specclauses: %s", specialClauses_unparse (specClauses))); | |
265 | } | |
266 | ||
267 | void setFunctionSpecialClause (lltok stok, sRefSet s, | |
268 | /*@unused@*/ lltok etok) | |
269 | { | |
270 | int tok = lltok_getTok (stok); | |
271 | ||
272 | switch (tok) | |
273 | { | |
274 | case QUSES: | |
275 | specClauses = specialClauses_add (specClauses, specialClause_createUses (s)); | |
276 | break; | |
277 | case QDEFINES: | |
278 | specClauses = specialClauses_add (specClauses, specialClause_createDefines (s)); | |
279 | break; | |
280 | case QALLOCATES: | |
281 | specClauses = specialClauses_add (specClauses, specialClause_createAllocates (s)); | |
282 | break; | |
283 | case QSETS: | |
284 | specClauses = specialClauses_add (specClauses, specialClause_createSets (s)); | |
285 | break; | |
286 | case QRELEASES: | |
287 | specClauses = specialClauses_add (specClauses, specialClause_createReleases (s)); | |
288 | break; | |
289 | default: | |
290 | sRefSet_free (s); | |
291 | BADBRANCH; | |
292 | } | |
293 | ||
294 | DPRINTF (("Added to specclauses: %s", specialClauses_unparse (specClauses))); | |
295 | } | |
9280addf | 296 | |
616915dd | 297 | /*drl |
298 | */ | |
299 | constraintList getFunctionConstraints (void) | |
300 | { | |
301 | return constraintList_copy (fcnConstraints); | |
302 | } | |
303 | ||
304 | ||
305 | constraintList getEnsuresConstraints (void) | |
306 | { | |
307 | return constraintList_copy (fcnEnsuresConstraints); | |
308 | } | |
309 | ||
310 | void setEnsuresConstraints (constraintList c) | |
311 | { | |
312 | #warning m leak | |
313 | fcnEnsuresConstraints = constraintList_copy (c); | |
314 | } | |
315 | ||
316 | void setFunctionConstraints (constraintList c) | |
317 | { | |
318 | #warning m leak | |
319 | fcnConstraints = constraintList_copy (c); | |
320 | } | |
321 | /* end drl*/ | |
322 | ||
323 | void setFunctionModifies (sRefSet s) | |
324 | { | |
325 | sRefSet_free (fcnModifies); | |
326 | fcnModifies = s; | |
327 | } | |
328 | ||
329 | static void reflectGlobalQualifiers (sRef sr, qualList quals) | |
330 | { | |
331 | qualList_elements (quals, qel) | |
332 | { | |
333 | if (qual_isGlobalQual (qel)) /* undef, killed */ | |
334 | { | |
335 | sstate oldstate = sRef_getDefState (sr); | |
336 | sstate defstate = sstate_fromQual (qel); | |
337 | ||
338 | if ((oldstate == SS_UNDEFGLOB && defstate == SS_KILLED) | |
339 | || (oldstate == SS_KILLED && defstate == SS_UNDEFGLOB)) | |
340 | { | |
341 | defstate = SS_UNDEFKILLED; | |
342 | } | |
343 | else | |
344 | { | |
345 | ; /* any errors? */ | |
346 | } | |
347 | ||
348 | sRef_setDefState (sr, defstate, fileloc_undefined); | |
349 | } | |
350 | else if (qual_isAllocQual (qel)) /* out, partial, reldef, etc. */ | |
351 | { | |
352 | ctype realType = sRef_getType (sr); | |
353 | sstate defstate = sstate_fromQual (qel); | |
354 | ||
355 | if (qual_isRelDef (qel)) | |
356 | { | |
357 | ; /* okay anywhere */ | |
358 | } | |
359 | else | |
360 | { | |
361 | if (!ctype_isAP (realType) | |
362 | && !ctype_isSU (realType) | |
363 | && !ctype_isUnknown (realType) | |
364 | && !ctype_isAbstract (sRef_getType (sr))) | |
365 | { | |
366 | llerror | |
367 | (FLG_SYNTAX, | |
368 | message ("Qualifier %s used on non-pointer or struct: %q", | |
369 | qual_unparse (qel), sRef_unparse (sr))); | |
370 | ||
371 | } | |
372 | } | |
373 | ||
374 | sRef_setDefState (sr, defstate, fileloc_undefined); | |
375 | } | |
376 | else if (qual_isNull (qel)) | |
377 | { | |
378 | sRef_setNullState (sr, NS_POSNULL, fileloc_undefined); | |
379 | } | |
380 | else if (qual_isRelNull (qel)) | |
381 | { | |
382 | sRef_setNullState (sr, NS_RELNULL, fileloc_undefined); | |
383 | } | |
384 | else if (qual_isNotNull (qel)) | |
385 | { | |
386 | sRef_setNullState (sr, NS_MNOTNULL, fileloc_undefined); | |
387 | } | |
388 | else | |
389 | { | |
390 | if (qual_isCQual (qel)) | |
391 | { | |
392 | ; /* okay */ | |
393 | } | |
394 | else | |
395 | { | |
396 | llerror (FLG_SYNTAX, | |
397 | message ("Qualifier %s cannot be used in a globals list", | |
398 | qual_unparse (qel))); | |
399 | } | |
400 | } | |
401 | } end_qualList_elements; | |
402 | } | |
403 | ||
404 | void globListAdd (sRef sr, qualList quals) | |
405 | { | |
406 | if (sRef_isValid (sr)) | |
407 | { | |
408 | sRef sc = sRef_copy (sr); | |
409 | ||
410 | reflectGlobalQualifiers (sc, quals); | |
411 | currentGlobals = globSet_insert (currentGlobals, sc); | |
412 | } | |
413 | } | |
414 | ||
415 | extern void declareCIter (cstring name, /*@owned@*/ uentryList params) | |
416 | { | |
417 | uentry ue; | |
418 | ||
419 | ue = uentry_makeIter (name, | |
420 | ctype_makeFunction (ctype_void, params), | |
421 | fileloc_copy (g_currentloc)); | |
422 | ||
423 | usymtab_supEntry (uentry_makeEndIter (name, fileloc_copy (g_currentloc))); | |
424 | ||
425 | reflectModGlobs (ue); | |
426 | ||
427 | ue = usymtab_supGlobalEntryReturn (ue); | |
428 | } | |
429 | ||
430 | extern void nextIterParam (void) | |
431 | { | |
432 | llassert (ProcessingIterVars); | |
433 | saveIterParamNo++; | |
434 | } | |
435 | ||
436 | extern int iterParamNo (void) | |
437 | { | |
438 | llassert (ProcessingIterVars); | |
439 | return saveIterParamNo; | |
440 | } | |
441 | ||
442 | /* | |
443 | ** yucky hacks to put it in the right place | |
444 | */ | |
445 | ||
446 | /*@only@*/ uentry | |
447 | makeCurrentParam (idDecl t) | |
448 | { | |
449 | uentry ue; | |
450 | ||
451 | saveStoreLoc = fileloc_undefined; | |
452 | ||
453 | /* param number unknown */ | |
454 | ||
455 | ue = uentry_makeParam (t, 0); | |
456 | return ue; | |
457 | } | |
458 | ||
459 | ctype | |
460 | declareUnnamedEnum (enumNameList el) | |
461 | { | |
462 | ctype ret = usymtab_enumEnumNameListType (el); | |
463 | ctype rt; | |
464 | uentry e; | |
465 | ||
466 | if (ctype_isDefined (ret)) | |
467 | { | |
468 | rt = ret; | |
469 | e = uentry_makeEnumTagLoc (ctype_enumTag (rt), ret); | |
470 | ||
471 | reflectStorageClass (e); | |
472 | usymtab_supGlobalEntry (e); | |
473 | ||
474 | declareEnumList (el, ret, g_currentloc); | |
475 | enumNameList_free (el); | |
476 | } | |
477 | else | |
478 | { | |
479 | ctype ct = ctype_createEnum (fakeTag (), el); | |
480 | ||
481 | e = uentry_makeEnumTagLoc (ctype_enumTag (ctype_realType (ct)), ct); | |
482 | reflectStorageClass (e); | |
483 | ||
484 | e = usymtab_supGlobalEntryReturn (e); | |
485 | rt = uentry_getAbstractType (e); | |
486 | declareEnumList (el, ct, g_currentloc); | |
487 | } | |
488 | ||
489 | return (rt); | |
490 | } | |
491 | ||
492 | ctype | |
493 | declareEnum (cstring ename, enumNameList el) | |
494 | { | |
495 | ctype cet; | |
496 | uentry e; | |
497 | ||
498 | llassert (cstring_isDefined (ename)); | |
499 | ||
500 | cet = ctype_createEnum (ename, el); | |
501 | e = uentry_makeEnumTagLoc (ename, cet); | |
502 | reflectStorageClass (e); | |
503 | e = usymtab_supGlobalEntryReturn (e); | |
504 | cet = uentry_getType (e); | |
505 | declareEnumList (el, cet, uentry_whereLast (e)); | |
506 | return (uentry_getAbstractType (e)); | |
507 | } | |
508 | ||
509 | static void | |
510 | declareEnumList (enumNameList el, ctype c, fileloc loc) | |
511 | { | |
512 | bool boolnames = FALSE; | |
513 | bool othernames = FALSE; | |
514 | ||
515 | (void) context_getSaveLocation (); /* undefine it */ | |
516 | ||
517 | if (context_maybeSet (FLG_NUMENUMMEMBERS)) | |
518 | { | |
519 | int maxnum = context_getValue (FLG_NUMENUMMEMBERS); | |
520 | int num = enumNameList_size (el); | |
521 | ||
522 | if (num > maxnum) | |
523 | { | |
524 | voptgenerror | |
525 | (FLG_NUMENUMMEMBERS, | |
526 | message ("Enumerator %s declared with %d members (limit is set to %d)", | |
527 | ctype_unparse (c), num, maxnum), | |
528 | loc); | |
529 | } | |
530 | } | |
531 | ||
532 | enumNameList_elements (el, e) | |
533 | { | |
534 | uentry ue = usymtab_lookupExposeGlob (e); | |
535 | ctype ct = uentry_getType (ue); | |
536 | ||
537 | llassert (uentry_isEnumConstant (ue)); | |
538 | ||
539 | if (ctype_isUnknown (ct)) | |
540 | { | |
541 | uentry_setType (ue, c); | |
542 | } | |
543 | else | |
544 | { | |
545 | if (cstring_equal (e, context_getFalseName ()) | |
546 | || cstring_equal (e, context_getTrueName ())) | |
547 | { | |
548 | if (othernames) | |
549 | { | |
550 | if (optgenerror | |
551 | (FLG_INCONDEFS, | |
552 | message ("Enumerator mixes boolean name (%s) with " | |
553 | "non-boolean names", | |
554 | e), | |
555 | uentry_whereLast (ue))) | |
556 | { | |
557 | ; | |
558 | } | |
559 | } | |
560 | ||
561 | boolnames = TRUE; | |
562 | uentry_setType (ue, ctype_bool); | |
563 | DPRINTF (("Set type: %s / %s", | |
564 | uentry_unparse (ue), ctype_unparse (ctype_bool))); | |
565 | } | |
566 | else | |
567 | { | |
568 | if (boolnames) | |
569 | { | |
570 | if (optgenerror | |
571 | (FLG_INCONDEFS, | |
572 | message ("Enumerator mixes boolean names (%s, %s) with " | |
573 | "non-boolean name: %s", | |
574 | context_getTrueName (), | |
575 | context_getFalseName (), | |
576 | e), | |
577 | uentry_whereLast (ue))) | |
578 | { | |
579 | ; | |
580 | } | |
581 | } | |
582 | ||
583 | othernames = TRUE; | |
584 | } | |
585 | ||
586 | if (!ctype_match (c, ct)) | |
587 | { | |
588 | if (ctype_isDirectBool (ct)) | |
589 | { | |
590 | if (cstring_equal (e, context_getFalseName ()) | |
591 | || cstring_equal (e, context_getTrueName ())) | |
592 | { | |
593 | DPRINTF (("Here we are!")); | |
594 | } | |
595 | else | |
596 | { | |
597 | if (optgenerror | |
598 | (FLG_INCONDEFS, | |
599 | message ("Enumerator member %s declared with " | |
600 | "inconsistent type: %s", | |
601 | e, ctype_unparse (c)), | |
602 | uentry_whereLast (ue))) | |
603 | { | |
604 | uentry_showWhereSpecifiedExtra | |
605 | (ue, cstring_copy (ctype_unparse (ct))); | |
606 | } | |
607 | } | |
608 | } | |
609 | else | |
610 | { | |
611 | if (optgenerror | |
612 | (FLG_INCONDEFS, | |
613 | message ("Enumerator member %s declared with " | |
614 | "inconsistent type: %s", | |
615 | e, ctype_unparse (c)), | |
616 | uentry_whereLast (ue))) | |
617 | { | |
618 | uentry_showWhereSpecifiedExtra | |
619 | (ue, cstring_copy (ctype_unparse (ct))); | |
620 | } | |
621 | } | |
622 | } | |
623 | } | |
624 | } end_enumNameList_elements; | |
625 | } | |
626 | ||
627 | static /*@dependent@*/ uentryList currentParamList; | |
628 | ||
470b7798 | 629 | /*drl added 3-28-2001*/ |
630 | /* this function takes a list of paramentar and generates a list | |
631 | of constraints. | |
632 | Currently the only constraints gnerated are MaxSet(p) >= 0 for all pointers | |
633 | */ | |
c3e695ff | 634 | void setImplictfcnConstraints (void) |
470b7798 | 635 | { |
636 | uentryList params; | |
637 | sRef s; | |
638 | constraint c; | |
639 | params = currentParamList; | |
640 | ||
c3e695ff | 641 | implicitFcnConstraints = constraintList_makeNew(); |
470b7798 | 642 | |
643 | uentryList_elements (params, el) | |
644 | { | |
645 | DPRINTF((message("setImplictfcnConstraints doing: %s", uentry_unparse(el) ) )); | |
646 | ||
647 | s = uentry_getSref(el); | |
648 | if (sRef_isReference (s) ) | |
649 | { | |
650 | DPRINTF((message ("%s is a pointer", sRef_unparse(s) ) )); | |
651 | } | |
652 | else | |
653 | { | |
654 | DPRINTF((message ("%s is NOT a pointer", sRef_unparse(s) ) )); | |
655 | } | |
656 | /*drl 4/26/01 | |
657 | chagned this is MaxSet(s) == 0 to MaxSet(s) >= 0 */ | |
658 | ||
659 | c = constraint_makeSRefWriteSafeInt (s, 0); | |
660 | // constraint_makeSRefSetBufferSize (s, 0); | |
661 | implicitFcnConstraints = constraintList_add(implicitFcnConstraints , c); | |
662 | } | |
663 | end_uentryList_elements; | |
664 | } | |
665 | ||
616915dd | 666 | void setCurrentParams (/*@dependent@*/ uentryList ue) |
667 | { | |
668 | currentParamList = ue; | |
669 | } | |
670 | ||
671 | void clearCurrentParams (void) | |
672 | { | |
673 | currentParamList = uentryList_undefined; | |
674 | } | |
675 | ||
676 | /* | |
677 | ** requires: uentry_isFunction (e) | |
678 | ** parameter names for current function are in currentParamList | |
679 | */ | |
680 | ||
681 | static void enterFunctionParams (uentryList params) | |
682 | { | |
683 | int paramno = 0; | |
684 | ||
685 | uentryList_elements (params, current) | |
686 | { | |
687 | if (uentry_hasName (current)) | |
688 | { | |
689 | uentry_setParamNo (current, paramno); | |
690 | usymtab_supEntry (uentry_copy (current)); | |
691 | } | |
692 | ||
693 | paramno++; | |
694 | } end_uentryList_elements; | |
695 | } | |
696 | ||
697 | ||
698 | extern void enterParamsTemp (void) | |
699 | { | |
700 | usymtab_enterScope (); | |
701 | enterFunctionParams (currentParamList); | |
702 | } | |
703 | ||
704 | extern void exitParamsTemp (void) | |
705 | { | |
706 | usymtab_quietPlainExitScope (); | |
707 | } | |
708 | ||
709 | static /*@exposed@*/ uentry globalDeclareFunction (idDecl tid) | |
710 | { | |
711 | ctype deftype = idDecl_getCtype (tid); | |
712 | ctype rettype; | |
713 | uentry ue; | |
714 | ||
715 | DPRINTF (("Global function: %s", idDecl_unparse (tid))); | |
716 | ||
717 | if (ctype_isFunction (deftype)) | |
718 | { | |
719 | rettype = ctype_returnValue (deftype); | |
720 | } | |
721 | else | |
722 | { | |
723 | rettype = ctype_unknown; | |
724 | } | |
725 | ||
726 | /* | |
727 | ** check has been moved here... | |
728 | */ | |
729 | ||
730 | if (ctype_isFunction (idDecl_getCtype (tid))) | |
731 | { | |
732 | ue = uentry_makeIdFunction (tid); | |
733 | reflectSpecialCode (ue); | |
734 | reflectArgsUsed (ue); | |
735 | } | |
736 | else | |
737 | { | |
738 | llparseerror (message ("Inconsistent function declaration: %q", | |
739 | idDecl_unparse (tid))); | |
740 | ||
741 | tid = idDecl_replaceCtype | |
742 | (tid, ctype_makeFunction (ctype_unknown, uentryList_undefined)); | |
743 | ue = uentry_makeIdFunction (tid); | |
744 | } | |
745 | ||
746 | reflectStorageClass (ue); | |
747 | ||
748 | uentry_checkParams (ue); | |
749 | reflectModGlobs (ue); | |
750 | ||
751 | ue = usymtab_supGlobalEntryReturn (ue); | |
752 | context_enterFunction (ue); | |
753 | enterFunctionParams (uentry_getParams (ue)); | |
754 | ||
755 | resetStorageClass (); | |
756 | return (ue); | |
757 | } | |
758 | ||
759 | /* | |
760 | ** for now, no type checking | |
761 | ** (must check later though!) | |
762 | */ | |
763 | ||
764 | static /*@only@*/ uentry globalDeclareOldStyleFunction (idDecl tid) | |
765 | { | |
766 | uentry ue; | |
767 | ||
768 | /* | |
769 | ** check has been moved here... | |
770 | */ | |
771 | ||
772 | if (cstring_equalLit (idDecl_observeId (tid), "main")) | |
773 | { | |
774 | context_setFlagTemp (FLG_MAINTYPE, FALSE); | |
775 | } | |
776 | ||
777 | ue = uentry_makeIdFunction (tid); | |
778 | reflectStorageClass (ue); | |
779 | reflectSpecialCode (ue); | |
780 | reflectArgsUsed (ue); | |
781 | uentry_setDefined (ue, g_currentloc); | |
782 | ||
783 | uentry_checkParams (ue); | |
784 | ||
785 | if (ProcessingGlobals) | |
786 | { | |
787 | uentry_setGlobals (ue, currentGlobals); | |
788 | } | |
789 | ||
790 | resetStorageClass (); | |
791 | return (ue); | |
792 | } | |
793 | ||
794 | static void oldStyleDeclareFunction (/*@only@*/ uentry e) | |
795 | { | |
796 | uentryList params = saveParamList; | |
797 | ctype rt = uentry_getType (e); | |
798 | ||
799 | llassert (ctype_isFunction (rt)); | |
800 | ||
801 | e = usymtab_supGlobalEntryReturn (e); | |
802 | ||
803 | context_enterFunction (e); | |
804 | enterFunctionParams (params); | |
805 | saveParamList = uentryList_undefined; | |
806 | resetStorageClass (); | |
807 | } | |
808 | ||
809 | void declareFunction (idDecl tid) /*@globals undef saveFunction; @*/ | |
810 | { | |
811 | uentry ue; | |
812 | ||
813 | DPRINTF (("Declare function: %s", idDecl_unparse (tid))); | |
814 | ||
815 | if (ProcessingParams) | |
816 | { | |
817 | ue = globalDeclareOldStyleFunction (tid); | |
818 | saveFunction = ue; | |
819 | } | |
820 | else | |
821 | { | |
822 | saveFunction = uentry_undefined; | |
823 | ||
824 | if (context_inRealFunction ()) | |
825 | { | |
826 | ue = uentry_makeVariableLoc (idDecl_observeId (tid), ctype_unknown); | |
827 | ||
828 | llparseerror (message ("Function declared inside function: %q", | |
829 | idDecl_unparse (tid))); | |
830 | ||
831 | context_quietExitFunction (); | |
832 | ue = usymtab_supEntryReturn (ue); | |
833 | } | |
834 | else | |
835 | { | |
836 | if (context_inInnerScope ()) | |
837 | { | |
838 | llparseerror (message ("Declaration in inner context: %q", | |
839 | idDecl_unparse (tid))); | |
840 | ||
841 | sRef_setGlobalScope (); | |
842 | ue = uentry_makeVariableLoc (idDecl_observeId (tid), | |
843 | ctype_unknown); | |
844 | ue = usymtab_supGlobalEntryReturn (ue); | |
845 | sRef_clearGlobalScope (); | |
846 | } | |
847 | else | |
848 | { | |
849 | ue = globalDeclareFunction (tid); | |
850 | } | |
851 | } | |
852 | ||
853 | resetGlobals (); | |
854 | } | |
855 | ||
856 | resetStorageClass (); | |
857 | idDecl_free (tid); | |
858 | } | |
859 | ||
860 | void declareStaticFunction (idDecl tid) /*@globals undef saveFunction; @*/ | |
861 | { | |
862 | uentry ue; | |
863 | ||
864 | DPRINTF (("Declare static funciton: %s", idDecl_unparse (tid))); | |
865 | ||
866 | if (ProcessingParams) | |
867 | { | |
868 | ue = globalDeclareOldStyleFunction (tid); | |
869 | saveFunction = ue; | |
870 | } | |
871 | else | |
872 | { | |
873 | saveFunction = uentry_undefined; | |
874 | ||
875 | if (context_inRealFunction ()) | |
876 | { | |
877 | ue = uentry_makeVariableLoc (idDecl_observeId (tid), ctype_unknown); | |
878 | ||
879 | llparseerror (message ("Function declared inside function: %q", | |
880 | idDecl_unparse (tid))); | |
881 | ||
882 | context_quietExitFunction (); | |
883 | ue = usymtab_supEntryReturn (ue); | |
884 | } | |
885 | else | |
886 | { | |
887 | if (context_inInnerScope ()) | |
888 | { | |
889 | llparseerror (message ("Declaration in inner context: %q", | |
890 | idDecl_unparse (tid))); | |
891 | ||
892 | sRef_setGlobalScope (); | |
893 | ue = uentry_makeVariableLoc (idDecl_observeId (tid), | |
894 | ctype_unknown); | |
895 | ue = usymtab_supGlobalEntryReturn (ue); | |
896 | sRef_clearGlobalScope (); | |
897 | } | |
898 | else | |
899 | { | |
900 | ctype deftype = idDecl_getCtype (tid); | |
901 | ctype rettype; | |
902 | ||
903 | if (ctype_isFunction (deftype)) | |
904 | { | |
905 | rettype = ctype_returnValue (deftype); | |
906 | } | |
907 | else | |
908 | { | |
909 | rettype = ctype_unknown; | |
910 | } | |
911 | ||
912 | /* | |
913 | ** check has been moved here... | |
914 | */ | |
915 | ||
916 | if (ctype_isFunction (idDecl_getCtype (tid))) | |
917 | { | |
918 | ue = uentry_makeIdFunction (tid); | |
919 | reflectSpecialCode (ue); | |
920 | reflectArgsUsed (ue); | |
921 | } | |
922 | else | |
923 | { | |
924 | llparseerror (message ("Inconsistent function declaration: %q", | |
925 | idDecl_unparse (tid))); | |
926 | ||
927 | tid = idDecl_replaceCtype | |
928 | (tid, ctype_makeFunction (ctype_unknown, uentryList_undefined)); | |
929 | ue = uentry_makeIdFunction (tid); | |
930 | } | |
931 | ||
932 | reflectStorageClass (ue); | |
933 | uentry_setStatic (ue); | |
934 | ||
935 | uentry_checkParams (ue); | |
936 | reflectModGlobs (ue); | |
937 | ||
938 | DPRINTF (("Sub global entry: %s", uentry_unparse (ue))); | |
939 | ue = usymtab_supGlobalEntryReturn (ue); | |
940 | ||
941 | context_enterFunction (ue); | |
942 | enterFunctionParams (uentry_getParams (ue)); | |
943 | resetStorageClass (); | |
944 | } | |
945 | } | |
946 | ||
947 | resetGlobals (); | |
948 | } | |
949 | ||
950 | resetStorageClass (); | |
951 | idDecl_free (tid); | |
952 | } | |
953 | ||
954 | void | |
955 | checkTypeDecl (uentry e, ctype rep) | |
956 | { | |
957 | cstring n = uentry_getName (e); | |
958 | ||
959 | DPRINTF (("Check type decl: %s", n)); | |
960 | ||
961 | if (cstring_equal (context_getBoolName (), n)) | |
962 | { | |
963 | ctype rrep = ctype_realType (rep); | |
964 | ||
965 | /* | |
966 | ** for abstract enum types, we need to fix the enum members: | |
967 | ** they should have the abstract type, not the rep type. | |
968 | */ | |
969 | ||
970 | if (ctype_isEnum (ctype_realType (rrep))) | |
971 | { | |
972 | enumNameList el = ctype_elist (rrep); | |
973 | ||
974 | enumNameList_elements (el, ye) | |
975 | { | |
976 | if (usymtab_existsGlob (ye)) | |
977 | { | |
978 | uentry ue = usymtab_lookupSafe (ye); | |
979 | uentry_setType (ue, ctype_bool); | |
980 | } | |
981 | ||
982 | if (cstring_equal (context_getTrueName (), ye) | |
983 | || cstring_equal (context_getFalseName (), ye)) | |
984 | { | |
985 | ; | |
986 | } | |
987 | else | |
988 | { | |
989 | vgenhinterror | |
990 | (FLG_SYNTAX, | |
991 | message ("Member of boolean enumerated type definition " | |
992 | "does not match name set to represent TRUE " | |
993 | "or FALSE: %s", | |
994 | ye), | |
995 | message ("Use -boolfalse and -booltrue to set the " | |
996 | "name of false and true boolean values."), | |
997 | uentry_whereDefined (e)); | |
998 | } | |
999 | } end_enumNameList_elements; | |
1000 | } | |
1001 | } | |
1002 | ||
1003 | if (usymtab_exists (n)) | |
1004 | { | |
1005 | usymId llm = usymtab_getId (n); | |
1006 | uentry le = usymtab_getTypeEntry (llm); | |
1007 | ||
1008 | uentry_setDeclared (e, g_currentloc); | |
1009 | uentry_setSref (e, sRef_makeGlobal (llm, uentry_getType (le))); | |
1010 | ||
1011 | DPRINTF (("Here we are: %s / %s", | |
1012 | n, context_getBoolName ())); | |
1013 | ||
1014 | if (uentry_isAbstractDatatype (le)) | |
1015 | { | |
1016 | ctype rrep = ctype_realType (rep); | |
1017 | ||
1018 | /* | |
1019 | ** for abstract enum types, we need to fix the enum members: | |
1020 | ** they should have the abstract type, not the rep type. | |
1021 | */ | |
1022 | ||
1023 | if (ctype_isEnum (ctype_realType (rrep))) | |
1024 | { | |
1025 | ctype at = uentry_getAbstractType (le); | |
1026 | enumNameList el = ctype_elist (rrep); | |
1027 | ||
1028 | enumNameList_elements (el, ye) | |
1029 | { | |
1030 | if (usymtab_existsGlob (ye)) | |
1031 | { | |
1032 | uentry ue = usymtab_lookupSafe (ye); | |
1033 | ||
1034 | llassert (uentry_isEitherConstant (ue)); | |
1035 | llassertprint (ctype_match (uentry_getType (ue), rrep), | |
1036 | ("Bad enum: %s / %s", | |
1037 | uentry_unparse (ue), | |
1038 | ctype_unparse (rrep))); | |
1039 | ||
1040 | uentry_setType (ue, at); | |
1041 | } | |
1042 | } end_enumNameList_elements; | |
1043 | } | |
1044 | ||
1045 | if (uentry_isMutableDatatype (le)) | |
1046 | { | |
1047 | /* maybe more complicated if abstract and immutable ? */ | |
1048 | ||
1049 | if (!ctype_isRealPointer (rep) && !ctype_isRealAbstract (rep)) | |
1050 | { | |
1051 | voptgenerror | |
1052 | (FLG_MUTREP, | |
1053 | message ("Mutable abstract type %s declared without pointer " | |
1054 | "indirection: %s (violates assignment semantics)", | |
1055 | n, ctype_unparse (rep)), | |
1056 | uentry_whereDefined (e)); | |
1057 | ||
1058 | uentry_setMutable (e); | |
1059 | } | |
1060 | } | |
1061 | } | |
1062 | } | |
1063 | else | |
1064 | { | |
1065 | fileloc fl = uentry_whereDeclared (e); | |
1066 | ||
1067 | if (context_getFlag (FLG_LIKELYBOOL) | |
1068 | && !context_getFlag (FLG_BOOLINT)) | |
1069 | { | |
1070 | if ((cstring_equalLit (n, "BOOL") | |
1071 | || cstring_equalLit (n, "Bool") | |
1072 | || cstring_equalLit (n, "bool") | |
1073 | || cstring_equalLit (n, "boolean") | |
1074 | || cstring_equalLit (n, "Boolean") | |
1075 | || cstring_equalLit (n, "BOOLEAN")) | |
1076 | && !(cstring_equal (n, context_getBoolName ()))) | |
1077 | { | |
1078 | if (context_setBoolName ()) { | |
1079 | voptgenerror | |
1080 | (FLG_LIKELYBOOL, | |
1081 | message ("Type %s is probably meant as a boolean type, but does " | |
1082 | "not match the boolean type name \"%s\".", | |
1083 | n, | |
1084 | context_getBoolName ()), | |
1085 | fl); | |
1086 | } else | |
1087 | voptgenerror | |
1088 | (FLG_LIKELYBOOL, | |
1089 | message ("Type %s is probably meant as a boolean type, " | |
1090 | "but the boolean type name is not set. " | |
1091 | "Use -booltype %s to set it.", | |
1092 | n, | |
1093 | n), | |
1094 | fl); | |
1095 | } | |
1096 | } | |
1097 | ||
1098 | if (!uentry_isStatic (e) | |
1099 | && !ctype_isFunction (uentry_getType (e)) | |
1100 | && !fileloc_isLib (fl) | |
1101 | && !fileloc_isImport (fl) | |
1102 | && fileloc_isHeader (fl)) | |
1103 | { | |
1104 | voptgenerror (FLG_EXPORTTYPE, | |
1105 | message ("Type exported, but not specified: %s\n", n), | |
1106 | fl); | |
1107 | } | |
1108 | } | |
1109 | ||
1110 | cstring_free (n); | |
1111 | } | |
1112 | ||
1113 | uentryList | |
1114 | fixUentryList (idDeclList tl, qtype q) | |
1115 | { | |
1116 | uentryList f = uentryList_new (); | |
1117 | ||
1118 | idDeclList_elements (tl, i) | |
1119 | { | |
1120 | if (idDecl_isDefined (i)) | |
1121 | { | |
1122 | uentry ue; | |
1123 | uentry old; | |
1124 | ctype rt; | |
1125 | ||
1126 | (void) idDecl_fixBase (i, q); | |
1127 | ||
1128 | /* | |
1129 | ** implicit annotations | |
1130 | */ | |
1131 | ||
1132 | (void) fixStructDecl (i); | |
1133 | ||
1134 | ue = uentry_makeIdVariable (i); | |
1135 | rt = ctype_realType (uentry_getType (ue)); | |
1136 | ||
1137 | /* | |
1138 | ** where is this here??? | |
1139 | ||
1140 | if (ctype_isArray (rt) || ctype_isSU (rt)) | |
1141 | { | |
1142 | sRef_setAllocated (uentry_getSref (ue), uentry_whereDefined (ue)); | |
1143 | } | |
1144 | ||
1145 | ** | |
1146 | */ | |
1147 | ||
1148 | if (uentry_isValid (old = uentryList_lookupField (f, uentry_rawName (ue)))) | |
1149 | { | |
1150 | if (optgenerror (FLG_SYNTAX, | |
1151 | message ("Field name reused: %s", uentry_rawName (ue)), | |
1152 | uentry_whereDefined (ue))) | |
1153 | { | |
1154 | llgenmsg (message ("Previous use of %s", uentry_rawName (ue)), | |
1155 | uentry_whereDefined (old)); | |
1156 | } | |
1157 | } | |
1158 | ||
1159 | f = uentryList_add (f, ue); | |
1160 | } | |
1161 | } end_idDeclList_elements; | |
1162 | ||
1163 | idDeclList_free (tl); | |
1164 | return (f); | |
1165 | } | |
1166 | ||
1167 | /* | |
1168 | ** This is a hack to support unnamed struct/union fields as done by | |
1169 | ** Microsoft VC++. It is not supported by the ANSI standard. | |
1170 | ** | |
1171 | ** The inner fields are added to the outer structure. This is meaningful | |
1172 | ** for nesting structs inside unions, but lclint does no related | |
1173 | ** checking. | |
1174 | */ | |
1175 | ||
1176 | uentryList | |
1177 | fixUnnamedDecl (qtype q) | |
1178 | { | |
1179 | ctype ct = ctype_realType (qtype_getType (q)); | |
1180 | ||
1181 | if (ctype_isStruct (ct) || ctype_isUnion (ct)) | |
1182 | { | |
1183 | uentryList res = ctype_getFields (ct); | |
1184 | ||
1185 | return (uentryList_copy (res)); | |
1186 | } | |
1187 | else | |
1188 | { | |
1189 | BADBRANCHCONT; | |
1190 | } | |
1191 | ||
1192 | return uentryList_undefined; | |
1193 | } | |
1194 | ||
1195 | void setStorageClass (storageClassCode sc) | |
1196 | { | |
1197 | storageClass = sc; | |
1198 | } | |
1199 | ||
1200 | void | |
1201 | setProcessingIterVars (uentry iter) | |
1202 | { | |
1203 | ProcessingIterVars = TRUE; | |
1204 | currentIter = iter; | |
1205 | saveIterParamNo = 0; | |
1206 | } | |
1207 | ||
1208 | void | |
1209 | setProcessingGlobalsList () | |
1210 | { | |
1211 | ProcessingGlobals = TRUE; | |
1212 | ||
1213 | llassert (globSet_isUndefined (currentGlobals)); | |
1214 | currentGlobals = globSet_undefined; | |
1215 | ||
1216 | llassert (sRefSet_isUndefined (fcnModifies)); | |
1217 | fcnModifies = sRefSet_undefined; | |
1218 | ||
1219 | /* | |
1220 | ** No, special clauses might have been processed first! | |
1221 | llassert (specialClauses_isUndefined (specClauses)); | |
1222 | specClauses = specialClauses_undefined; | |
1223 | */ | |
1224 | ||
1225 | fcnNoGlobals = FALSE; | |
1226 | } | |
1227 | ||
1228 | static bool ProcessingGlobMods = FALSE; | |
1229 | ||
1230 | void | |
1231 | setProcessingGlobMods () | |
1232 | { | |
1233 | ProcessingGlobMods = TRUE; | |
1234 | } | |
1235 | ||
1236 | void | |
1237 | clearProcessingGlobMods () | |
1238 | { | |
1239 | ProcessingGlobMods = FALSE; | |
1240 | } | |
1241 | ||
1242 | bool | |
1243 | isProcessingGlobMods () | |
1244 | { | |
1245 | return (ProcessingGlobMods); | |
1246 | } | |
1247 | ||
1248 | static void resetGlobals (void) | |
1249 | { | |
1250 | ProcessingGlobals = FALSE; | |
1251 | currentGlobals = globSet_undefined; | |
1252 | llassert (sRefSet_isUndefined (fcnModifies)); | |
1253 | fcnModifies = sRefSet_undefined; | |
1254 | fcnNoGlobals = FALSE; | |
1255 | } | |
1256 | ||
1257 | void | |
1258 | unsetProcessingGlobals () | |
1259 | { | |
1260 | ProcessingGlobals = FALSE; | |
1261 | } | |
1262 | ||
1263 | void | |
1264 | setProcessingVars (/*@only@*/ qtype q) | |
1265 | { | |
1266 | ProcessingVars = TRUE; | |
1267 | qtype_free (processingType); | |
1268 | processingType = q; | |
1269 | } | |
1270 | ||
1271 | static void | |
1272 | setGenericParamList (/*@dependent@*/ uentryList pm) | |
1273 | { | |
1274 | ProcessingParams = TRUE; | |
1275 | saveParamList = pm; | |
1276 | } | |
1277 | ||
1278 | void | |
1279 | setProcessingTypedef (/*@only@*/ qtype q) | |
1280 | { | |
1281 | ProcessingTypedef = TRUE; | |
1282 | ||
1283 | qtype_free (processingType); | |
1284 | processingType = q; | |
1285 | } | |
1286 | ||
1287 | void | |
1288 | unsetProcessingVars () | |
1289 | { | |
1290 | resetStorageClass (); | |
1291 | ProcessingVars = FALSE; | |
1292 | } | |
1293 | ||
1294 | void | |
1295 | doneParams () | |
1296 | { | |
1297 | if (ProcessingParams) | |
1298 | { | |
1299 | if (uentry_isInvalid (saveFunction)) | |
1300 | { | |
1301 | llbuglit ("unsetProcessingVars: no saved function\n"); | |
1302 | ||
1303 | if (sRefSet_isDefined (fcnModifies)) { | |
1304 | sRefSet_free (fcnModifies); | |
1305 | fcnModifies = sRefSet_undefined; | |
1306 | } | |
1307 | } | |
1308 | else | |
1309 | { | |
1310 | ctype ct = ctype_returnValue (uentry_getType (saveFunction)); | |
1311 | uentryList params = uentryList_copy (saveParamList); | |
1312 | ctype ct2 = ctype_makeFunction (ct, params); | |
1313 | ||
1314 | uentry_setType (saveFunction, ct2); | |
1315 | ProcessingParams = FALSE; | |
1316 | ||
1317 | reflectModGlobs (saveFunction); | |
1318 | oldStyleDeclareFunction (saveFunction); | |
1319 | saveFunction = uentry_undefined; | |
1320 | resetGlobals (); | |
1321 | } | |
1322 | } | |
1323 | else | |
1324 | { | |
1325 | /* | |
1326 | ** If the paramlist used a type name, we could be here. | |
1327 | */ | |
1328 | ||
1329 | llfatalerror (message ("%q: Old-style function parameter list uses a " | |
1330 | "type name.", fileloc_unparse (g_currentloc))); | |
1331 | } | |
1332 | } | |
1333 | ||
1334 | void | |
1335 | checkDoneParams () | |
1336 | { | |
1337 | if (uentry_isValid (saveFunction)) | |
1338 | { | |
1339 | /* | |
1340 | ** old style declaration | |
1341 | */ | |
1342 | ||
1343 | ctype ct = ctype_returnValue (uentry_getType (saveFunction)); | |
1344 | ctype ct2; | |
1345 | ||
1346 | uentryList_elements (saveParamList, current) | |
1347 | { | |
1348 | uentry_setType (current, ctype_int); /* all params are ints */ | |
1349 | } end_uentryList_elements; | |
1350 | ||
1351 | ct2 = ctype_makeParamsFunction (ct, uentryList_copy (saveParamList)); | |
1352 | ||
1353 | uentry_setType (saveFunction, ct2); | |
1354 | ProcessingParams = FALSE; | |
1355 | ||
1356 | oldStyleDeclareFunction (saveFunction); | |
1357 | saveFunction = uentry_undefined; | |
1358 | } | |
1359 | } | |
1360 | ||
1361 | void | |
1362 | unsetProcessingTypedef () | |
1363 | { | |
1364 | ProcessingTypedef = FALSE; | |
1365 | } | |
1366 | ||
1367 | void checkConstant (qtype t, idDecl id) | |
1368 | { | |
1369 | uentry e; | |
1370 | ||
1371 | id = idDecl_fixBase (id, t); | |
1372 | e = uentry_makeIdConstant (id); | |
1373 | ||
1374 | reflectStorageClass (e); | |
1375 | resetStorageClass (); | |
1376 | ||
1377 | usymtab_supGlobalEntry (e); | |
1378 | } | |
1379 | ||
1380 | void checkValueConstant (qtype t, idDecl id, exprNode e) | |
1381 | { | |
1382 | uentry ue; | |
1383 | ||
1384 | id = idDecl_fixBase (id, t); | |
1385 | ue = uentry_makeIdConstant (id); | |
1386 | reflectStorageClass (ue); | |
1387 | resetStorageClass (); | |
1388 | ||
1389 | if (exprNode_isDefined (e)) | |
1390 | { | |
1391 | if (!exprNode_matchType (uentry_getType (ue), e)) | |
1392 | { | |
1393 | (void) gentypeerror | |
1394 | (exprNode_getType (e), e, | |
1395 | uentry_getType (ue), exprNode_undefined, | |
1396 | message ("Constant %q initialized to type %t, expects %t: %s", | |
1397 | uentry_getName (ue), | |
1398 | exprNode_getType (e), | |
1399 | uentry_getType (ue), | |
1400 | exprNode_unparse (e)), | |
1401 | exprNode_loc (e)); | |
1402 | } | |
1403 | else | |
1404 | { | |
1405 | if (exprNode_hasValue (e)) | |
1406 | { | |
1407 | uentry_mergeConstantValue (ue, multiVal_copy (exprNode_getValue (e))); | |
1408 | } | |
1409 | } | |
1410 | } | |
1411 | ||
1412 | usymtab_supGlobalEntry (ue); | |
1413 | } | |
1414 | ||
1415 | ||
1416 | void processNamedDecl (idDecl t) | |
1417 | { | |
1418 | if (qtype_isUndefined (processingType)) | |
1419 | { | |
1420 | llparseerror (message ("No type before declaration name: %q", idDecl_unparse (t))); | |
1421 | ||
1422 | processingType = qtype_create (ctype_unknown); | |
1423 | } | |
1424 | ||
1425 | t = idDecl_fixBase (t, processingType); | |
1426 | ||
1427 | DPRINTF (("Declare: %s", idDecl_unparse (t))); | |
1428 | ||
1429 | if (ProcessingGlobals) | |
1430 | { | |
1431 | cstring id = idDecl_getName (t); | |
1432 | uentry ue = usymtab_lookupSafe (id); | |
1433 | ||
1434 | if (!uentry_isValid (ue)) | |
1435 | { | |
1436 | llerror (FLG_UNRECOG, | |
1437 | message ("Variable used in globals list is undeclared: %s", id)); | |
1438 | } | |
1439 | else | |
1440 | { | |
1441 | if (!ctype_match (uentry_getType (ue), idDecl_getCtype (t))) | |
1442 | { | |
1443 | voptgenerror | |
1444 | (FLG_INCONDEFS, | |
1445 | message ("Variable %s used in globals list declared %s, " | |
1446 | "but listed as %s", | |
1447 | id, ctype_unparse (uentry_getType (ue)), | |
1448 | ctype_unparse (idDecl_getCtype (t))), | |
1449 | g_currentloc); | |
1450 | } | |
1451 | else | |
1452 | { | |
1453 | sRef sr = sRef_copy (uentry_getSref (ue)); | |
1454 | ||
1455 | reflectGlobalQualifiers (sr, idDecl_getQuals (t)); | |
1456 | ||
1457 | currentGlobals = globSet_insert (currentGlobals, sr); | |
1458 | } | |
1459 | } | |
1460 | } | |
1461 | else if (ProcessingVars) | |
1462 | { | |
1463 | uentry e; | |
1464 | ctype ct; | |
1465 | ||
1466 | ct = ctype_realType (idDecl_getCtype (t)); | |
1467 | ||
1468 | if (ProcessingParams) | |
1469 | { | |
1470 | cstring id = idDecl_getName (t); | |
1471 | int paramno = uentryList_lookupRealName (saveParamList, id); | |
1472 | ||
1473 | if (paramno >= 0) | |
1474 | { | |
1475 | uentry cparam = uentryList_getN (saveParamList, paramno); | |
1476 | ||
1477 | uentry_setType (cparam, idDecl_getCtype (t)); | |
1478 | uentry_reflectQualifiers (cparam, idDecl_getQuals (t)); | |
1479 | uentry_setDeclaredOnly (cparam, context_getSaveLocation ()); | |
1480 | } | |
1481 | else | |
1482 | { | |
1483 | llfatalerrorLoc | |
1484 | (message ("Old style declaration uses unlisted parameter: %s", | |
1485 | id)); | |
1486 | } | |
1487 | } | |
1488 | else | |
1489 | { | |
1490 | fileloc loc; | |
1491 | ||
1492 | if (context_inIterDef ()) | |
1493 | { | |
1494 | cstring pname = makeParam (idDecl_observeId (t)); | |
1495 | uentry p = usymtab_lookupSafe (pname); | |
1496 | ||
1497 | cstring_free (pname); | |
1498 | ||
1499 | if (uentry_isYield (p)) | |
1500 | { | |
1501 | e = uentry_makeParam (t, sRef_getParam (uentry_getSref (p))); | |
1502 | ||
1503 | uentry_checkYieldParam (p, e); | |
1504 | ||
1505 | usymtab_supEntrySref (e); | |
1506 | return; | |
1507 | } | |
1508 | } | |
1509 | ||
1510 | if ((hasSpecialCode () || argsUsed) | |
1511 | && ctype_isFunction (idDecl_getCtype (t))) | |
1512 | { | |
1513 | e = uentry_makeIdFunction (t); | |
1514 | reflectSpecialCode (e); | |
1515 | reflectArgsUsed (e); | |
1516 | } | |
1517 | else | |
1518 | { | |
1519 | e = uentry_makeIdVariable (t); | |
1520 | } | |
1521 | ||
1522 | loc = uentry_whereDeclared (e); | |
1523 | ||
1524 | /* | |
1525 | if (context_inGlobalScope ()) | |
1526 | { | |
1527 | uentry_checkParams was here! | |
1528 | } | |
1529 | */ | |
1530 | ||
1531 | if (ctype_isFunction (uentry_getType (e))) | |
1532 | { | |
1533 | reflectModGlobs (e); | |
1534 | } | |
1535 | else | |
1536 | { | |
1537 | llassert (!globSet_isDefined (currentGlobals) | |
1538 | && !sRefSet_isDefined (fcnModifies)); | |
1539 | } | |
1540 | ||
1541 | e = usymtab_supEntrySrefReturn (e); | |
1542 | ||
1543 | if (uentry_isExtern (e) && !context_inGlobalScope ()) | |
1544 | { | |
1545 | voptgenerror | |
1546 | (FLG_NESTEDEXTERN, | |
1547 | message ("Declaration using extern inside function scope: %q", | |
1548 | uentry_unparse (e)), | |
1549 | g_currentloc); | |
1550 | ||
1551 | uentry_setDefined (e, fileloc_getExternal ()); | |
1552 | sRef_setDefined (uentry_getSref (e), fileloc_getExternal ()); | |
1553 | } | |
1554 | ||
1555 | if (uentry_isFunction (e)) | |
1556 | { | |
1557 | uentry_checkParams (e); | |
1558 | checkParamNames (e); | |
1559 | } | |
1560 | ||
1561 | if (uentry_isVar (e) | |
1562 | && uentry_isCheckedUnknown (e)) | |
1563 | { | |
1564 | sRef sr = uentry_getSref (e); | |
1565 | ||
1566 | if (sRef_isLocalVar (sr)) | |
1567 | { | |
1568 | if (context_getFlag (FLG_IMPCHECKMODINTERNALS)) | |
1569 | { | |
1570 | uentry_setCheckMod (e); | |
1571 | } | |
1572 | else | |
1573 | { | |
1574 | uentry_setUnchecked (e); | |
1575 | } | |
1576 | } | |
1577 | else if (sRef_isFileStatic (sr)) | |
1578 | { | |
1579 | if (context_getFlag (FLG_IMPCHECKEDSTRICTSTATICS)) | |
1580 | { | |
1581 | uentry_setCheckedStrict (e); | |
1582 | } | |
1583 | else if (context_getFlag (FLG_IMPCHECKEDSTATICS)) | |
1584 | { | |
1585 | uentry_setChecked (e); | |
1586 | } | |
1587 | else if (context_getFlag (FLG_IMPCHECKMODSTATICS)) | |
1588 | { | |
1589 | uentry_setCheckMod (e); | |
1590 | } | |
1591 | else | |
1592 | { | |
1593 | ; | |
1594 | } | |
1595 | } | |
1596 | else /* real global */ | |
1597 | { | |
1598 | llassert (sRef_isRealGlobal (sr)); | |
1599 | ||
1600 | if (context_getFlag (FLG_IMPCHECKEDSTRICTGLOBALS)) | |
1601 | { | |
1602 | uentry_setCheckedStrict (e); | |
1603 | } | |
1604 | else if (context_getFlag (FLG_IMPCHECKEDGLOBALS)) | |
1605 | { | |
1606 | uentry_setChecked (e); | |
1607 | } | |
1608 | else if (context_getFlag (FLG_IMPCHECKMODGLOBALS)) | |
1609 | { | |
1610 | uentry_setCheckMod (e); | |
1611 | } | |
1612 | else | |
1613 | { | |
1614 | ; | |
1615 | } | |
1616 | } | |
1617 | } | |
1618 | } | |
1619 | } | |
1620 | else if (ProcessingTypedef) | |
1621 | { | |
1622 | ctype ct = idDecl_getCtype (t); | |
1623 | uentry e; | |
1624 | ||
1625 | DPRINTF (("Processing typedef: %s", ctype_unparse (ct))); | |
1626 | ||
1627 | e = uentry_makeIdDatatype (t); | |
1628 | ||
1629 | if (cstring_equal (idDecl_getName (t), context_getBoolName ())) { | |
1630 | ctype rt = ctype_realType (ct); | |
1631 | ||
1632 | if (ctype_isEnum (rt)) { | |
1633 | ; | |
1634 | } else { | |
1635 | if (!(ctype_isInt (rt) | |
1636 | || ctype_isUnknown (rt) | |
1637 | || ctype_isChar (rt))) { | |
1638 | (void) llgenerror | |
1639 | (FLG_BOOLTYPE, | |
1640 | message ("Boolean type %s defined using non-standard type %s (integral, char or enum type expected)", | |
1641 | context_getBoolName (), | |
1642 | ctype_unparse (ct)), | |
1643 | uentry_whereLast (e)); | |
1644 | } | |
1645 | ||
1646 | ct = ctype_bool; | |
1647 | uentry_setType (e, ct); | |
1648 | } | |
1649 | } | |
1650 | ||
1651 | reflectStorageClass (e); | |
1652 | checkTypeDecl (e, ct); | |
1653 | ||
1654 | e = usymtab_supReturnTypeEntry (e); | |
1655 | ||
1656 | if (uentry_isMaybeAbstract (e)) | |
1657 | { | |
1658 | if (context_getFlag (FLG_IMPABSTRACT)) | |
1659 | { | |
1660 | uentry_setAbstract (e); | |
1661 | } | |
1662 | else | |
1663 | { | |
1664 | uentry_setConcrete (e); | |
1665 | } | |
1666 | } | |
1667 | } | |
1668 | else | |
1669 | { | |
1670 | llparseerror (message ("Suspect missing struct or union keyword: %q", | |
1671 | idDecl_unparse (t))); | |
1672 | } | |
1673 | ||
1674 | } | |
1675 | ||
1676 | /* | |
1677 | ** moved from grammar | |
1678 | */ | |
1679 | ||
1680 | static idDecl fixStructDecl (/*@returned@*/ idDecl d) | |
1681 | { | |
1682 | if (ctype_isVisiblySharable (idDecl_getCtype (d)) | |
1683 | && context_getFlag (FLG_STRUCTIMPONLY)) | |
1684 | { | |
1685 | if (!qualList_hasAliasQualifier (idDecl_getQuals (d))) | |
1686 | { | |
1687 | if (qualList_hasExposureQualifier (idDecl_getQuals (d))) | |
1688 | { | |
1689 | idDecl_addQual (d, qual_createDependent ()); | |
1690 | } | |
1691 | else | |
1692 | { | |
1693 | idDecl_addQual (d, qual_createImpOnly ()); | |
1694 | } | |
1695 | } | |
1696 | } | |
1697 | ||
1698 | return d; | |
1699 | } | |
1700 | ||
1701 | ctype | |
1702 | declareUnnamedStruct (/*@only@*/ uentryList f) | |
1703 | { | |
1704 | if (context_maybeSet (FLG_NUMSTRUCTFIELDS)) | |
1705 | { | |
1706 | int num = uentryList_size (f); | |
1707 | int max = context_getValue (FLG_NUMSTRUCTFIELDS); | |
1708 | ||
1709 | if (num > max) | |
1710 | { | |
1711 | voptgenerror | |
1712 | (FLG_NUMSTRUCTFIELDS, | |
1713 | message ("Structure declared with %d fields " | |
1714 | "(limit is set to %d)", | |
1715 | num, max), | |
1716 | g_currentloc); | |
1717 | } | |
1718 | } | |
1719 | ||
1720 | return (ctype_createUnnamedStruct (f)); | |
1721 | } | |
1722 | ||
1723 | ctype | |
1724 | declareUnnamedUnion (/*@only@*/ uentryList f) | |
1725 | { | |
1726 | if (context_maybeSet (FLG_NUMSTRUCTFIELDS)) | |
1727 | { | |
1728 | int num = uentryList_size (f); | |
1729 | int max = context_getValue (FLG_NUMSTRUCTFIELDS); | |
1730 | ||
1731 | if (num > max) | |
1732 | { | |
1733 | voptgenerror | |
1734 | (FLG_NUMSTRUCTFIELDS, | |
1735 | message ("Union declared with %d fields " | |
1736 | "(limit is set to %d)", | |
1737 | num, max), | |
1738 | g_currentloc); | |
1739 | } | |
1740 | } | |
1741 | ||
1742 | return (ctype_createUnnamedUnion (f)); | |
1743 | } | |
1744 | ||
1745 | ctype declareStruct (cstring id, /*@only@*/ uentryList f) | |
1746 | { | |
1747 | ctype ct; | |
1748 | uentry ue; | |
1749 | int num = uentryList_size (f); | |
1750 | ||
1751 | ct = ctype_createStruct (cstring_copy (id), f); | |
1752 | DPRINTF (("Declare struct: %s [%d]", ctype_unparse (ct), ct)); | |
1753 | ue = uentry_makeStructTagLoc (id, ct); | |
1754 | ||
1755 | if (context_maybeSet (FLG_NUMSTRUCTFIELDS)) | |
1756 | { | |
1757 | int max = context_getValue (FLG_NUMSTRUCTFIELDS); | |
1758 | ||
1759 | if (num > max) | |
1760 | { | |
1761 | voptgenerror | |
1762 | (FLG_NUMSTRUCTFIELDS, | |
1763 | message ("Structure %q declared with %d fields " | |
1764 | "(limit is set to %d)", | |
1765 | uentry_getName (ue), num, max), | |
1766 | uentry_whereLast (ue)); | |
1767 | } | |
1768 | } | |
1769 | ||
1770 | return (usymtab_supTypeEntry (ue)); | |
1771 | } | |
1772 | ||
1773 | ctype declareUnion (cstring id, uentryList f) | |
1774 | { | |
1775 | ctype ct; | |
1776 | uentry ue; | |
1777 | int num = uentryList_size (f); | |
1778 | ||
1779 | ct = ctype_createUnion (cstring_copy (id), f); | |
1780 | ue = uentry_makeUnionTagLoc (id, ct); | |
1781 | ||
1782 | if (context_maybeSet (FLG_NUMSTRUCTFIELDS)) | |
1783 | { | |
1784 | int max = context_getValue (FLG_NUMSTRUCTFIELDS); | |
1785 | ||
1786 | if (num > max) | |
1787 | { | |
1788 | voptgenerror | |
1789 | (FLG_NUMSTRUCTFIELDS, | |
1790 | message ("Union %q declared with %d fields " | |
1791 | "(limit is set to %d)", | |
1792 | uentry_getName (ue), num, max), | |
1793 | uentry_whereLast (ue)); | |
1794 | } | |
1795 | } | |
1796 | ||
1797 | return (usymtab_supTypeEntry (ue)); | |
1798 | } | |
1799 | ||
1800 | ctype handleStruct (/*@only@*/ cstring id) | |
1801 | { | |
1802 | if (usymtab_existsStructTag (id)) | |
1803 | { | |
1804 | ctype ct = uentry_getAbstractType (usymtab_lookupStructTag (id)); | |
1805 | ||
1806 | cstring_free (id); | |
1807 | return ct; | |
1808 | } | |
1809 | else | |
1810 | { | |
1811 | return (ctype_createForwardStruct (id)); | |
1812 | } | |
1813 | } | |
1814 | ||
1815 | ctype handleUnion (/*@only@*/ cstring id) | |
1816 | { | |
1817 | if (usymtab_existsUnionTag (id)) | |
1818 | { | |
1819 | ctype ret = uentry_getAbstractType (usymtab_lookupUnionTag (id)); | |
1820 | cstring_free (id); | |
1821 | return (ret); | |
1822 | } | |
1823 | else | |
1824 | { | |
1825 | return (ctype_createForwardUnion (id)); | |
1826 | } | |
1827 | } | |
1828 | ||
1829 | ctype | |
1830 | handleEnum (cstring id) | |
1831 | { | |
1832 | if (usymtab_existsEnumTag (id)) | |
1833 | { | |
1834 | ctype ret = uentry_getAbstractType (usymtab_lookupEnumTag (id)); | |
1835 | cstring_free (id); | |
1836 | return ret; | |
1837 | } | |
1838 | else | |
1839 | { | |
1840 | return (declareEnum (id, enumNameList_new ())); | |
1841 | } | |
1842 | } | |
1843 | ||
1844 | bool processingIterVars (void) | |
1845 | { | |
1846 | return ProcessingIterVars; | |
1847 | } | |
1848 | ||
1849 | uentry getCurrentIter (void) | |
1850 | { | |
1851 | return currentIter; | |
1852 | } | |
1853 | ||
1854 | static bool flipOldStyle = FALSE; | |
1855 | static bool flipNewStyle = TRUE; | |
1856 | ||
1857 | void setFlipOldStyle () { flipOldStyle = TRUE; } | |
1858 | bool isFlipOldStyle () { return flipOldStyle; } | |
1859 | bool isNewStyle () { return flipNewStyle; } | |
1860 | void setNewStyle () { flipNewStyle = TRUE; } | |
1861 | ||
1862 | /*@dependent@*/ uentryList handleParamIdList (/*@dependent@*/ uentryList params) | |
1863 | { | |
1864 | int paramno = 0; | |
1865 | ||
1866 | /* | |
1867 | ** this is a really YUCKY hack to handle old style | |
1868 | ** declarations. | |
1869 | */ | |
1870 | ||
1871 | voptgenerror (FLG_OLDSTYLE, | |
1872 | cstring_makeLiteral ("Old style function declaration"), | |
1873 | g_currentloc); | |
1874 | ||
1875 | uentryList_elements (params, current) | |
1876 | { | |
1877 | uentry_setParam (current); | |
1878 | uentry_setSref (current, sRef_makeParam (paramno, ctype_unknown)); | |
1879 | paramno++; | |
1880 | } end_uentryList_elements; | |
1881 | ||
1882 | setGenericParamList (params); | |
1883 | g_expectingTypeName = TRUE; | |
1884 | ||
1885 | return params; | |
1886 | } | |
1887 | ||
1888 | /*@dependent@*/ uentryList handleParamTypeList (/*@returned@*/ uentryList params) | |
1889 | { | |
1890 | if (flipOldStyle) | |
1891 | { | |
1892 | uentryList_fixMissingNames (params); | |
1893 | ||
1894 | voptgenerror (FLG_OLDSTYLE, | |
1895 | cstring_makeLiteral ("Old style function declaration."), | |
1896 | g_currentloc); | |
1897 | ||
1898 | setGenericParamList (params); | |
1899 | flipOldStyle = FALSE; | |
1900 | g_expectingTypeName = TRUE; | |
1901 | } | |
1902 | ||
1903 | return (params); | |
1904 | } | |
1905 | ||
1906 | void | |
1907 | doVaDcl () | |
1908 | { | |
1909 | ctype c = ctype_unknown; | |
1910 | cstring id = cstring_makeLiteral ("va_alist"); | |
1911 | uentry e; | |
1912 | ||
1913 | if (ProcessingParams) | |
1914 | { | |
1915 | int i = uentryList_lookupRealName (saveParamList, id); | |
1916 | ||
1917 | if (i >= 0) | |
1918 | { | |
1919 | e = uentry_makeVariableSrefParam (id, c, sRef_makeParam (i, c)); | |
1920 | } | |
1921 | else | |
1922 | { | |
1923 | e = uentry_undefined; /* suppress gcc message */ | |
1924 | llfatalerrorLoc (cstring_makeLiteral ("va_dcl used without va_alist")); | |
1925 | } | |
1926 | } | |
1927 | else | |
1928 | { | |
1929 | llerror (FLG_SYNTAX, cstring_makeLiteral ("va_dcl used outside of function declaration")); | |
1930 | e = uentry_makeVariableLoc (id, c); | |
1931 | } | |
1932 | ||
1933 | cstring_free (id); | |
1934 | uentry_setUsed (e, g_currentloc); | |
1935 | usymtab_supEntrySref (e); | |
1936 | } | |
1937 | ||
1938 | /*@exposed@*/ sRef modListPointer (sRef s) | |
1939 | { | |
1940 | ctype ct = sRef_getType (s); | |
1941 | ctype rt = ctype_realType (ct); | |
1942 | ||
1943 | if (ctype_isAP (rt)) | |
1944 | { | |
1945 | if (context_inHeader () && ctype_isAbstract (ct)) | |
1946 | { | |
1947 | voptgenerror | |
1948 | (FLG_ABSTRACT, | |
1949 | message | |
1950 | ("Modifies clause in header file dereferences abstract " | |
1951 | "type %s (interface modifies clause should not depend " | |
1952 | "on or expose type representation): %q", | |
1953 | ctype_unparse (ct), | |
1954 | sRef_unparse (s)), | |
1955 | g_currentloc); | |
1956 | } | |
1957 | ||
1958 | return (sRef_constructPointer (s)); | |
1959 | } | |
1960 | else | |
1961 | { | |
1962 | if (ctype_isKnown (rt)) | |
1963 | { | |
1964 | voptgenerror | |
1965 | (FLG_TYPE, | |
1966 | message ("Implementation modifies clause dereferences non-pointer (type %s): %q", | |
1967 | ctype_unparse (rt), | |
1968 | sRef_unparse (s)), | |
1969 | g_currentloc); | |
1970 | } | |
1971 | ||
1972 | return s; | |
1973 | } | |
1974 | } | |
1975 | ||
1976 | /*@exposed@*/ sRef modListFieldAccess (sRef s, cstring f) | |
1977 | { | |
1978 | ctype ct = sRef_getType (s); | |
1979 | ctype rt = ctype_realType (ct); | |
1980 | ||
1981 | if (ctype_isStructorUnion (rt)) | |
1982 | { | |
1983 | uentry tf = uentryList_lookupField (ctype_getFields (rt), f); | |
1984 | ||
1985 | if (uentry_isUndefined (tf)) | |
1986 | { | |
1987 | voptgenerror (FLG_TYPE, | |
1988 | message ("Modifies list accesses non-existent " | |
1989 | "field %s of %t: %q", f, ct, | |
1990 | sRef_unparse (s)), | |
1991 | g_currentloc); | |
1992 | ||
1993 | cstring_free (f); | |
1994 | return sRef_undefined; | |
1995 | } | |
1996 | else | |
1997 | { | |
1998 | if (ctype_isAbstract (ct) && context_inHeader ()) | |
1999 | { | |
2000 | voptgenerror | |
2001 | (FLG_ABSTRACT, | |
2002 | message | |
2003 | ("Modifies clause in header file accesses abstract " | |
2004 | "type %s (interface modifies clause should not depend " | |
2005 | "on or expose type representation): %q", | |
2006 | ctype_unparse (ct), | |
2007 | sRef_unparse (s)), | |
2008 | g_currentloc); | |
2009 | } | |
2010 | } | |
2011 | ||
2012 | cstring_markOwned (f); | |
2013 | return (sRef_makeField (s, f)); | |
2014 | } | |
2015 | else | |
2016 | { | |
2017 | voptgenerror | |
2018 | (FLG_TYPE, | |
2019 | message ("Modifies clause dereferences non-pointer (type %s): %q", | |
2020 | ctype_unparse (rt), | |
2021 | sRef_unparse (s)), | |
2022 | g_currentloc); | |
2023 | ||
2024 | cstring_free (f); | |
2025 | return s; | |
2026 | } | |
2027 | } | |
2028 | ||
2029 | sRef globListUnrecognized (cstring s) | |
2030 | { | |
2031 | if (cstring_equalLit (s, "nothing")) | |
2032 | { | |
2033 | return sRef_makeNothing (); | |
2034 | } | |
2035 | else if (cstring_equalLit (s, "internalState")) | |
2036 | { | |
2037 | return sRef_makeInternalState (); | |
2038 | } | |
2039 | else if (cstring_equalLit (s, "fileSystem") | |
2040 | || cstring_equalLit (s, "systemState")) | |
2041 | { | |
2042 | return sRef_makeSystemState (); | |
2043 | } | |
2044 | else | |
2045 | { | |
2046 | voptgenerror | |
2047 | (FLG_UNRECOG, | |
2048 | message ("Unrecognized identifier in globals list: %s", s), | |
2049 | g_currentloc); | |
2050 | ||
2051 | return sRef_undefined; | |
2052 | } | |
2053 | } | |
2054 | ||
2055 | /*@exposed@*/ sRef modListArrowAccess (sRef s, cstring f) | |
2056 | { | |
2057 | ctype ct = sRef_getType (s); | |
2058 | ctype rt = ctype_realType (ct); | |
2059 | ||
2060 | if (ctype_isRealPointer (rt)) | |
2061 | { | |
2062 | ctype b = ctype_baseArrayPtr (rt); | |
2063 | ctype rb = ctype_realType (b); | |
2064 | ||
2065 | if (ctype_isStructorUnion (rb)) | |
2066 | { | |
2067 | uentry tf = uentryList_lookupField (ctype_getFields (rb), f); | |
2068 | ||
2069 | if (uentry_isUndefined (tf)) | |
2070 | { | |
2071 | voptgenerror (FLG_TYPE, | |
2072 | message ("Modifies list arrow accesses non-existent " | |
2073 | "field %s of %t: %q", f, b, | |
2074 | sRef_unparse (s)), | |
2075 | g_currentloc); | |
2076 | ||
2077 | cstring_free (f); | |
2078 | return sRef_undefined; | |
2079 | } | |
2080 | else | |
2081 | { | |
2082 | if (context_inHeader ()) | |
2083 | { | |
2084 | if (ctype_isAbstract (b)) | |
2085 | { | |
2086 | voptgenerror | |
2087 | (FLG_ABSTRACT, | |
2088 | message | |
2089 | ("Modifies clause in header file arrow accesses abstract " | |
2090 | "type %s (interface modifies clause should not depend " | |
2091 | "on or expose type representation): %q", | |
2092 | ctype_unparse (b), | |
2093 | sRef_unparse (s)), | |
2094 | g_currentloc); | |
2095 | } | |
2096 | } | |
2097 | else | |
2098 | { | |
2099 | if (ctype_isAbstract (ct)) | |
2100 | { | |
2101 | voptgenerror | |
2102 | (FLG_ABSTRACT, | |
2103 | message | |
2104 | ("Modifies clause in header file arrow accesses abstract " | |
2105 | "type %s (interface modifies clause should not depend " | |
2106 | "on or expose type representation): %q", | |
2107 | ctype_unparse (ct), | |
2108 | sRef_unparse (s)), | |
2109 | g_currentloc); | |
2110 | } | |
2111 | } | |
2112 | } | |
2113 | ||
2114 | cstring_markOwned (f); | |
2115 | return (sRef_makeArrow (s, f)); | |
2116 | } | |
2117 | else | |
2118 | { | |
2119 | voptgenerror | |
2120 | (FLG_TYPE, | |
2121 | message ("Modifies clause arrow accesses pointer to " | |
2122 | "non-structure (type %s): %q", | |
2123 | ctype_unparse (rt), | |
2124 | sRef_unparse (s)), | |
2125 | g_currentloc); | |
2126 | } | |
2127 | } | |
2128 | else | |
2129 | { | |
2130 | voptgenerror | |
2131 | (FLG_TYPE, | |
2132 | message ("Modifies clause arrow accesses non-pointer (type %s): %q", | |
2133 | ctype_unparse (rt), | |
2134 | sRef_unparse (s)), | |
2135 | g_currentloc); | |
2136 | } | |
2137 | ||
2138 | cstring_free (f); | |
2139 | return s; | |
2140 | } | |
2141 | ||
2142 | sRef checkSpecClausesId (uentry ue) | |
2143 | { | |
2144 | cstring s = uentry_rawName (ue); | |
2145 | ||
2146 | if (sRef_isGlobal (uentry_getSref (ue))) | |
2147 | { | |
2148 | voptgenerror | |
2149 | (FLG_SYNTAX, | |
2150 | message ("Global variable %s used special clause. (Global variables " | |
2151 | "are not recognized in special clauses. If there is " | |
2152 | "sufficient interest in support for this, it may be " | |
2153 | "added to a future release. Send mail to " | |
2154 | "lclint@cs.virginia.edu.)", | |
2155 | s), | |
2156 | g_currentloc); | |
2157 | ||
2158 | return sRef_undefined; | |
2159 | } | |
2160 | else | |
2161 | { | |
2162 | if (cstring_equalLit (s, "result")) | |
2163 | { | |
2164 | if (optgenerror | |
2165 | (FLG_SYNTAX, | |
2166 | message ("Special clause list uses %s which is a variable and has special " | |
2167 | "meaning in a modifies list. (Special meaning assumed.)", s), | |
2168 | g_currentloc)) | |
2169 | { | |
2170 | uentry_showWhereDeclared (ue); | |
2171 | } | |
2172 | } | |
2173 | ||
2174 | return uentry_getSref (ue); | |
2175 | } | |
2176 | } | |
9280addf | 2177 | /*drl:1/19/2001 |
2178 | oops to 1/8/2000 | |
2179 | date is wronge .. | |
2180 | don;t know what the real date is... | |
2181 | ||
2182 | */ | |
616915dd | 2183 | |
2184 | /*drl | |
2185 | added 1/8/2000 | |
2186 | based on checkSpecClausesId | |
2187 | called by grammar | |
2188 | */ | |
2189 | sRef checkbufferConstraintClausesId (uentry ue) | |
2190 | { | |
2191 | cstring s = uentry_rawName (ue); | |
2192 | if (cstring_equalLit (s, "result")) | |
2193 | { | |
2194 | if (optgenerror | |
2195 | (FLG_SYNTAX, | |
2196 | message ("Special clause list uses %s which is a variable and has special " | |
2197 | "meaning in a modifies list. (Special meaning assumed.)", s), | |
2198 | g_currentloc)) | |
2199 | { | |
2200 | uentry_showWhereDeclared (ue); | |
2201 | } | |
2202 | } | |
2203 | ||
dc92450f | 2204 | return sRef_copy( uentry_getSref (ue) ); |
616915dd | 2205 | } |
2206 | ||
2207 | void checkModifiesId (uentry ue) | |
2208 | { | |
2209 | cstring s = uentry_rawName (ue); | |
2210 | ||
2211 | if (cstring_equalLit (s, "nothing") | |
2212 | || cstring_equalLit (s, "internalState") | |
2213 | || cstring_equalLit (s, "systemState") | |
2214 | || (cstring_equalLit (s, "fileSystem"))) | |
2215 | { | |
2216 | if (optgenerror | |
2217 | (FLG_SYNTAX, | |
2218 | message ("Modifies list uses %s which is a variable and has special " | |
2219 | "meaning in a modifies list. (Special meaning assumed.)", s), | |
2220 | g_currentloc)) | |
2221 | { | |
2222 | uentry_showWhereDeclared (ue); | |
2223 | } | |
2224 | } | |
2225 | } | |
2226 | ||
2227 | /*@exposed@*/ sRef fixModifiesId (cstring s) | |
2228 | { | |
2229 | sRef ret; | |
2230 | cstring pname = makeParam (s); | |
2231 | uentry ue = usymtab_lookupSafe (pname); | |
2232 | ||
2233 | cstring_free (pname); | |
2234 | ||
2235 | if (cstring_equalLit (s, "nothing")) | |
2236 | { | |
2237 | ret = sRef_makeNothing (); | |
2238 | } | |
2239 | else if (cstring_equalLit (s, "internalState")) | |
2240 | { | |
2241 | ret = sRef_makeInternalState (); | |
2242 | } | |
2243 | else if (cstring_equalLit (s, "fileSystem") | |
2244 | || cstring_equalLit (s, "systemState")) | |
2245 | { | |
2246 | ret = sRef_makeSystemState (); | |
2247 | } | |
2248 | else | |
2249 | { | |
2250 | ret = sRef_undefined; | |
2251 | } | |
2252 | ||
2253 | if (sRef_isValid (ret)) | |
2254 | { | |
2255 | if (uentry_isValid (ue)) | |
2256 | { | |
2257 | voptgenerror | |
2258 | (FLG_SYNTAX, | |
2259 | message ("Modifies list uses %s which is a parameter and has special " | |
2260 | "meaning in a modifies list. (Special meaning assumed.)", s), | |
2261 | g_currentloc); | |
2262 | } | |
2263 | } | |
2264 | else | |
2265 | { | |
2266 | if (uentry_isValid (ue)) | |
2267 | { | |
2268 | ret = uentry_getSref (ue); | |
2269 | } | |
2270 | else | |
2271 | { | |
2272 | fileloc loc = fileloc_decColumn (g_currentloc, cstring_length (s)); | |
2273 | ret = sRef_undefined; | |
2274 | ||
2275 | voptgenerror | |
2276 | (FLG_UNRECOG, | |
2277 | message ("Unrecognized identifier in modifies comment: %s", s), | |
2278 | loc); | |
2279 | ||
2280 | fileloc_free (loc); | |
2281 | } | |
2282 | } | |
2283 | ||
2284 | return ret; | |
2285 | } | |
2286 | ||
2287 | sRef fixSpecClausesId (cstring s) | |
2288 | { | |
2289 | sRef ret; | |
2290 | cstring pname = makeParam (s); | |
2291 | uentry ue = usymtab_lookupSafe (pname); | |
2292 | ||
2293 | cstring_free (pname); | |
2294 | ||
2295 | if (cstring_equalLit (s, "result")) | |
2296 | { | |
2297 | ret = sRef_makeResult (); | |
2298 | } | |
2299 | else | |
2300 | { | |
2301 | ret = sRef_undefined; | |
2302 | } | |
2303 | ||
2304 | if (sRef_isValid (ret)) | |
2305 | { | |
2306 | if (uentry_isValid (ue)) | |
2307 | { | |
2308 | voptgenerror | |
2309 | (FLG_SYNTAX, | |
2310 | message ("Special clause uses %s which is a parameter and has special " | |
2311 | "meaning in a special clause. (Special meaning assumed.)", s), | |
2312 | g_currentloc); | |
2313 | } | |
2314 | } | |
2315 | else | |
2316 | { | |
2317 | if (uentry_isValid (ue)) | |
2318 | { | |
2319 | ret = uentry_getSref (ue); | |
2320 | ||
2321 | if (sRef_isGlobal (ret)) | |
2322 | { | |
2323 | voptgenerror | |
2324 | (FLG_SYNTAX, | |
2325 | message ("Global variable %s used special clause. (Global variables " | |
2326 | "are not recognized in special clauses. If there is " | |
2327 | "sufficient interest in support for this, it may be " | |
2328 | "added to a future release. Send mail to " | |
2329 | "lclint@cs.virginia.edu.)", | |
2330 | s), | |
2331 | g_currentloc); | |
2332 | ||
2333 | ret = sRef_undefined; | |
2334 | } | |
2335 | } | |
2336 | else | |
2337 | { | |
2338 | fileloc loc = fileloc_decColumn (g_currentloc, cstring_length (s)); | |
2339 | ret = sRef_undefined; | |
2340 | ||
2341 | voptgenerror | |
2342 | (FLG_UNRECOG, | |
2343 | message ("Unrecognized identifier in special clause: %s", s), | |
2344 | loc); | |
2345 | ||
2346 | fileloc_free (loc); | |
2347 | } | |
2348 | } | |
2349 | ||
2350 | return ret; | |
2351 | } | |
2352 | ||
2353 | sRef modListArrayFetch (sRef s, /*@unused@*/ sRef mexp) | |
2354 | { | |
2355 | ctype ct = sRef_getType (s); | |
2356 | ctype rt = ctype_realType (ct); | |
2357 | ||
2358 | if (ctype_isAP (rt)) | |
2359 | { | |
2360 | if (context_inHeader () && ctype_isAbstract (ct)) | |
2361 | { | |
2362 | voptgenerror | |
2363 | (FLG_ABSTRACT, | |
2364 | message | |
2365 | ("Modifies clause in header file indexes abstract " | |
2366 | "type %s (interface modifies clause should not depend " | |
2367 | "on or expose type representation): %q", | |
2368 | ctype_unparse (ct), | |
2369 | sRef_unparse (s)), | |
2370 | g_currentloc); | |
2371 | } | |
2372 | ||
2373 | return (sRef_makeAnyArrayFetch (s)); | |
2374 | } | |
2375 | else | |
2376 | { | |
2377 | voptgenerror | |
2378 | (FLG_TYPE, | |
2379 | message | |
2380 | ("Implementation modifies clause uses array fetch on non-array (type %s): %q", | |
2381 | ctype_unparse (ct), sRef_unparse (s)), | |
2382 | g_currentloc); | |
2383 | return s; | |
2384 | } | |
2385 | } | |
2386 | ||
2387 | ||
2388 | ||
2389 | ||
2390 | ||
2391 | ||
2392 | ||
2393 |