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