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885824d3 | 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 | ||
93307a76 | 54 | /*drl*/ |
55 | static constraintList fcnConstraints = NULL; | |
56 | ||
f5ac53de | 57 | //static constraintList fcnPreConditions = NULL; |
93307a76 | 58 | |
59 | ||
885824d3 | 60 | static /*@only@*/ sRefSet fcnModifies = sRefSet_undefined; |
61 | static /*@only@*/ /*@null@*/ specialClauses specClauses = specialClauses_undefined; | |
62 | static bool fcnNoGlobals = FALSE; | |
63 | static bool ProcessingVars = FALSE; | |
64 | static bool ProcessingParams = FALSE; | |
65 | static bool ProcessingGlobals = FALSE; | |
66 | static bool ProcessingTypedef = FALSE; | |
67 | static bool ProcessingIterVars = FALSE; | |
68 | static /*@only@*/ qtype processingType = qtype_undefined; | |
69 | static uentry currentIter = uentry_undefined; | |
70 | static globSet currentGlobals = globSet_undefined; | |
71 | static /*@dependent@*/ uentryList saveParamList; /* for old style functions */ | |
72 | static /*@owned@*/ uentry saveFunction = uentry_undefined; | |
73 | static int saveIterParamNo; | |
74 | static idDecl fixStructDecl (/*@returned@*/ idDecl p_d); | |
75 | static void checkTypeDecl (uentry p_e, ctype p_rep); | |
76 | static /*@dependent@*/ fileloc saveStoreLoc = fileloc_undefined; | |
77 | static storageClassCode storageClass = SCNONE; | |
78 | static void declareEnumList (/*@temp@*/ enumNameList p_el, ctype p_c, fileloc p_loc); | |
79 | static void resetGlobals (void); | |
80 | static qual specialFunctionCode = QU_UNKNOWN; | |
81 | static bool argsUsed = FALSE; | |
82 | ||
83 | static bool hasSpecialCode (void) | |
84 | { | |
85 | return (specialFunctionCode != QU_UNKNOWN); | |
86 | } | |
87 | ||
88 | extern void setArgsUsed (void) | |
89 | { | |
90 | if (argsUsed) | |
91 | { | |
92 | voptgenerror | |
93 | (FLG_SYNTAX, | |
94 | cstring_makeLiteral ("Multiple ARGSUSED comments for one function"), | |
95 | g_currentloc); | |
96 | } | |
97 | ||
98 | argsUsed = TRUE; | |
99 | } | |
100 | ||
101 | static void reflectArgsUsed (uentry ue) | |
102 | { | |
103 | if (argsUsed) | |
104 | { | |
105 | if (uentry_isFunction (ue)) | |
106 | { | |
107 | uentryList params = uentry_getParams (ue); | |
108 | ||
109 | uentryList_elements (params, el) | |
110 | { | |
111 | uentry_setUsed (el, fileloc_undefined); | |
112 | } end_uentryList_elements ; | |
113 | } | |
114 | ||
115 | argsUsed = FALSE; | |
116 | } | |
117 | } | |
118 | ||
119 | extern void setSpecialFunction (qual qu) | |
120 | { | |
121 | if (specialFunctionCode != QU_UNKNOWN) | |
122 | { | |
123 | voptgenerror (FLG_SYNTAX, | |
124 | message ("Multiple special function codes: %s, %s " | |
125 | "(first code is ignored)", | |
126 | qual_unparse (specialFunctionCode), | |
127 | qual_unparse (qu)), | |
128 | g_currentloc); | |
129 | } | |
130 | ||
131 | specialFunctionCode = qu; | |
132 | } | |
133 | ||
134 | static void reflectSpecialCode (uentry ue) | |
135 | { | |
136 | switch (specialFunctionCode) | |
137 | { | |
138 | case QU_UNKNOWN: break; | |
139 | case QU_PRINTFLIKE: | |
140 | uentry_setPrintfLike (ue); | |
141 | break; | |
142 | case QU_SCANFLIKE: | |
143 | uentry_setScanfLike (ue); | |
144 | break; | |
145 | case QU_MESSAGELIKE: | |
146 | uentry_setMessageLike (ue); | |
147 | break; | |
148 | BADDEFAULT; | |
149 | } | |
150 | ||
151 | specialFunctionCode = QU_UNKNOWN; | |
152 | } | |
153 | ||
154 | static void resetStorageClass (void) | |
155 | { | |
156 | qtype_free (processingType); | |
157 | processingType = qtype_undefined; | |
158 | storageClass = SCNONE; | |
159 | } | |
160 | ||
161 | static void reflectModGlobs (uentry ue) | |
162 | { | |
163 | if (fcnNoGlobals) | |
164 | { | |
165 | llassert (globSet_isUndefined (currentGlobals)); | |
166 | ||
167 | uentry_setGlobals (ue, globSet_undefined); | |
168 | fcnNoGlobals = FALSE; | |
169 | } | |
170 | else if (globSet_isDefined (currentGlobals)) | |
171 | { | |
172 | uentry_setGlobals (ue, currentGlobals); | |
173 | currentGlobals = globSet_undefined; | |
174 | } | |
175 | else | |
176 | { | |
177 | ; /* no globals */ | |
178 | } | |
179 | ||
180 | if (sRefSet_isDefined (fcnModifies)) | |
181 | { | |
182 | uentry_setModifies (ue, fcnModifies); | |
183 | fcnModifies = sRefSet_undefined; | |
184 | } | |
185 | ||
93307a76 | 186 | if (fcnConstraints) |
187 | { | |
188 | uentry_setPreconditions (ue, fcnConstraints); | |
189 | fcnConstraints = constraintList_undefined; | |
190 | } | |
191 | ||
885824d3 | 192 | if (uentry_isFunction (ue)) |
193 | { | |
194 | uentry_setSpecialClauses (ue, specClauses); | |
195 | specClauses = NULL; | |
196 | DPRINTF (("Done with spec clauses")); | |
197 | } | |
198 | } | |
199 | ||
200 | static void reflectStorageClass (uentry u) | |
201 | { | |
202 | if (storageClass == SCSTATIC) | |
203 | { | |
204 | uentry_setStatic (u); | |
205 | } | |
206 | else if (storageClass == SCEXTERN) | |
207 | { | |
208 | uentry_setExtern (u); | |
209 | } | |
210 | else | |
211 | { | |
212 | ; /* no storage class */ | |
213 | } | |
214 | ||
215 | } | |
216 | ||
217 | void storeLoc () | |
218 | { | |
219 | saveStoreLoc = g_currentloc; | |
220 | } | |
221 | ||
222 | void setFunctionNoGlobals (void) | |
223 | { | |
224 | llassert (globSet_isUndefined (currentGlobals)); | |
225 | fcnNoGlobals = TRUE; | |
226 | } | |
227 | ||
228 | void | |
229 | setFunctionStateSpecialClause (lltok stok, specialClauseKind kind, | |
230 | sRefSet s, | |
231 | /*@unused@*/ lltok etok) | |
232 | { | |
233 | int tok = lltok_getTok (stok); | |
234 | ||
235 | switch (tok) | |
236 | { | |
237 | case QPRECLAUSE: | |
238 | specClauses = specialClauses_add (specClauses, | |
239 | specialClause_create (TK_BEFORE, kind, s)); | |
240 | break; | |
241 | case QPOSTCLAUSE: | |
242 | specClauses = specialClauses_add (specClauses, | |
243 | specialClause_create (TK_AFTER, kind, s)); | |
244 | break; | |
245 | default: | |
246 | sRefSet_free (s); | |
247 | BADBRANCH; | |
248 | } | |
249 | ||
250 | DPRINTF (("Added to specclauses: %s", specialClauses_unparse (specClauses))); | |
251 | } | |
252 | ||
253 | void setFunctionSpecialClause (lltok stok, sRefSet s, | |
254 | /*@unused@*/ lltok etok) | |
255 | { | |
256 | int tok = lltok_getTok (stok); | |
257 | ||
258 | switch (tok) | |
259 | { | |
260 | case QUSES: | |
261 | specClauses = specialClauses_add (specClauses, specialClause_createUses (s)); | |
262 | break; | |
263 | case QDEFINES: | |
264 | specClauses = specialClauses_add (specClauses, specialClause_createDefines (s)); | |
265 | break; | |
266 | case QALLOCATES: | |
267 | specClauses = specialClauses_add (specClauses, specialClause_createAllocates (s)); | |
268 | break; | |
269 | case QSETS: | |
270 | specClauses = specialClauses_add (specClauses, specialClause_createSets (s)); | |
271 | break; | |
272 | case QRELEASES: | |
273 | specClauses = specialClauses_add (specClauses, specialClause_createReleases (s)); | |
274 | break; | |
275 | default: | |
276 | sRefSet_free (s); | |
277 | BADBRANCH; | |
278 | } | |
279 | ||
280 | DPRINTF (("Added to specclauses: %s", specialClauses_unparse (specClauses))); | |
281 | } | |
282 | ||
f5ac53de | 283 | constraintList getFunctionConstraints (void) |
93307a76 | 284 | { |
285 | return constraintList_copy (fcnConstraints); | |
286 | } | |
287 | ||
288 | void setFunctionConstraints (constraintList c) | |
289 | { | |
290 | #warning m leak | |
291 | fcnConstraints = constraintList_copy (c); | |
292 | } | |
293 | ||
885824d3 | 294 | void setFunctionModifies (sRefSet s) |
295 | { | |
296 | sRefSet_free (fcnModifies); | |
297 | fcnModifies = s; | |
298 | } | |
299 | ||
300 | static void reflectGlobalQualifiers (sRef sr, qualList quals) | |
301 | { | |
302 | qualList_elements (quals, qel) | |
303 | { | |
304 | if (qual_isGlobalQual (qel)) /* undef, killed */ | |
305 | { | |
306 | sstate oldstate = sRef_getDefState (sr); | |
307 | sstate defstate = sstate_fromQual (qel); | |
308 | ||
309 | if ((oldstate == SS_UNDEFGLOB && defstate == SS_KILLED) | |
310 | || (oldstate == SS_KILLED && defstate == SS_UNDEFGLOB)) | |
311 | { | |
312 | defstate = SS_UNDEFKILLED; | |
313 | } | |
314 | else | |
315 | { | |
316 | ; /* any errors? */ | |
317 | } | |
318 | ||
319 | sRef_setDefState (sr, defstate, fileloc_undefined); | |
320 | } | |
321 | else if (qual_isAllocQual (qel)) /* out, partial, reldef, etc. */ | |
322 | { | |
323 | ctype realType = sRef_getType (sr); | |
324 | sstate defstate = sstate_fromQual (qel); | |
325 | ||
326 | if (qual_isRelDef (qel)) | |
327 | { | |
328 | ; /* okay anywhere */ | |
329 | } | |
330 | else | |
331 | { | |
332 | if (!ctype_isAP (realType) | |
333 | && !ctype_isSU (realType) | |
334 | && !ctype_isUnknown (realType) | |
335 | && !ctype_isAbstract (sRef_getType (sr))) | |
336 | { | |
337 | llerror | |
338 | (FLG_SYNTAX, | |
339 | message ("Qualifier %s used on non-pointer or struct: %q", | |
340 | qual_unparse (qel), sRef_unparse (sr))); | |
341 | ||
342 | } | |
343 | } | |
344 | ||
345 | sRef_setDefState (sr, defstate, fileloc_undefined); | |
346 | } | |
347 | else if (qual_isNull (qel)) | |
348 | { | |
349 | sRef_setNullState (sr, NS_POSNULL, fileloc_undefined); | |
350 | } | |
351 | else if (qual_isRelNull (qel)) | |
352 | { | |
353 | sRef_setNullState (sr, NS_RELNULL, fileloc_undefined); | |
354 | } | |
355 | else if (qual_isNotNull (qel)) | |
356 | { | |
357 | sRef_setNullState (sr, NS_MNOTNULL, fileloc_undefined); | |
358 | } | |
359 | else | |
360 | { | |
361 | if (qual_isCQual (qel)) | |
362 | { | |
363 | ; /* okay */ | |
364 | } | |
365 | else | |
366 | { | |
367 | llerror (FLG_SYNTAX, | |
368 | message ("Qualifier %s cannot be used in a globals list", | |
369 | qual_unparse (qel))); | |
370 | } | |
371 | } | |
372 | } end_qualList_elements; | |
373 | } | |
374 | ||
375 | void globListAdd (sRef sr, qualList quals) | |
376 | { | |
377 | if (sRef_isValid (sr)) | |
378 | { | |
379 | sRef sc = sRef_copy (sr); | |
380 | ||
381 | reflectGlobalQualifiers (sc, quals); | |
382 | currentGlobals = globSet_insert (currentGlobals, sc); | |
383 | } | |
384 | } | |
385 | ||
386 | extern void declareCIter (cstring name, /*@owned@*/ uentryList params) | |
387 | { | |
388 | uentry ue; | |
389 | ||
390 | ue = uentry_makeIter (name, | |
391 | ctype_makeFunction (ctype_void, params), | |
392 | fileloc_copy (g_currentloc)); | |
393 | ||
394 | usymtab_supEntry (uentry_makeEndIter (name, fileloc_copy (g_currentloc))); | |
395 | ||
396 | reflectModGlobs (ue); | |
397 | ||
398 | ue = usymtab_supGlobalEntryReturn (ue); | |
399 | } | |
400 | ||
401 | extern void nextIterParam (void) | |
402 | { | |
403 | llassert (ProcessingIterVars); | |
404 | saveIterParamNo++; | |
405 | } | |
406 | ||
407 | extern int iterParamNo (void) | |
408 | { | |
409 | llassert (ProcessingIterVars); | |
410 | return saveIterParamNo; | |
411 | } | |
412 | ||
413 | /* | |
414 | ** yucky hacks to put it in the right place | |
415 | */ | |
416 | ||
417 | /*@only@*/ uentry | |
418 | makeCurrentParam (idDecl t) | |
419 | { | |
420 | uentry ue; | |
421 | ||
422 | saveStoreLoc = fileloc_undefined; | |
423 | ||
424 | /* param number unknown */ | |
425 | ||
426 | ue = uentry_makeParam (t, 0); | |
427 | return ue; | |
428 | } | |
429 | ||
430 | ctype | |
431 | declareUnnamedEnum (enumNameList el) | |
432 | { | |
433 | ctype ret = usymtab_enumEnumNameListType (el); | |
434 | ctype rt; | |
435 | uentry e; | |
436 | ||
437 | if (ctype_isDefined (ret)) | |
438 | { | |
439 | rt = ret; | |
440 | e = uentry_makeEnumTagLoc (ctype_enumTag (rt), ret); | |
441 | ||
442 | reflectStorageClass (e); | |
443 | usymtab_supGlobalEntry (e); | |
444 | ||
445 | declareEnumList (el, ret, g_currentloc); | |
446 | enumNameList_free (el); | |
447 | } | |
448 | else | |
449 | { | |
450 | ctype ct = ctype_createEnum (fakeTag (), el); | |
451 | ||
452 | e = uentry_makeEnumTagLoc (ctype_enumTag (ctype_realType (ct)), ct); | |
453 | reflectStorageClass (e); | |
454 | ||
455 | e = usymtab_supGlobalEntryReturn (e); | |
456 | rt = uentry_getAbstractType (e); | |
457 | declareEnumList (el, ct, g_currentloc); | |
458 | } | |
459 | ||
460 | return (rt); | |
461 | } | |
462 | ||
463 | ctype | |
464 | declareEnum (cstring ename, enumNameList el) | |
465 | { | |
466 | ctype cet; | |
467 | uentry e; | |
468 | ||
469 | llassert (cstring_isDefined (ename)); | |
470 | ||
471 | cet = ctype_createEnum (ename, el); | |
472 | e = uentry_makeEnumTagLoc (ename, cet); | |
473 | reflectStorageClass (e); | |
474 | e = usymtab_supGlobalEntryReturn (e); | |
475 | cet = uentry_getType (e); | |
476 | declareEnumList (el, cet, uentry_whereLast (e)); | |
477 | return (uentry_getAbstractType (e)); | |
478 | } | |
479 | ||
480 | static void | |
481 | declareEnumList (enumNameList el, ctype c, fileloc loc) | |
482 | { | |
483 | bool boolnames = FALSE; | |
484 | bool othernames = FALSE; | |
485 | ||
486 | (void) context_getSaveLocation (); /* undefine it */ | |
487 | ||
488 | if (context_maybeSet (FLG_NUMENUMMEMBERS)) | |
489 | { | |
490 | int maxnum = context_getValue (FLG_NUMENUMMEMBERS); | |
491 | int num = enumNameList_size (el); | |
492 | ||
493 | if (num > maxnum) | |
494 | { | |
495 | voptgenerror | |
496 | (FLG_NUMENUMMEMBERS, | |
497 | message ("Enumerator %s declared with %d members (limit is set to %d)", | |
498 | ctype_unparse (c), num, maxnum), | |
499 | loc); | |
500 | } | |
501 | } | |
502 | ||
503 | enumNameList_elements (el, e) | |
504 | { | |
505 | uentry ue = usymtab_lookupExposeGlob (e); | |
506 | ctype ct = uentry_getType (ue); | |
507 | ||
508 | llassert (uentry_isEnumConstant (ue)); | |
509 | ||
510 | if (ctype_isUnknown (ct)) | |
511 | { | |
512 | uentry_setType (ue, c); | |
513 | } | |
514 | else | |
515 | { | |
516 | if (cstring_equal (e, context_getFalseName ()) | |
517 | || cstring_equal (e, context_getTrueName ())) | |
518 | { | |
519 | if (othernames) | |
520 | { | |
521 | if (optgenerror | |
522 | (FLG_INCONDEFS, | |
523 | message ("Enumerator mixes boolean name (%s) with " | |
524 | "non-boolean names", | |
525 | e), | |
526 | uentry_whereLast (ue))) | |
527 | { | |
528 | ; | |
529 | } | |
530 | } | |
531 | ||
532 | boolnames = TRUE; | |
533 | uentry_setType (ue, ctype_bool); | |
a0a162cd | 534 | DPRINTF (("Set type: %s / %s", |
535 | uentry_unparse (ue), ctype_unparse (ctype_bool))); | |
885824d3 | 536 | } |
537 | else | |
538 | { | |
539 | if (boolnames) | |
540 | { | |
541 | if (optgenerror | |
542 | (FLG_INCONDEFS, | |
543 | message ("Enumerator mixes boolean names (%s, %s) with " | |
544 | "non-boolean name: %s", | |
545 | context_getTrueName (), | |
546 | context_getFalseName (), | |
547 | e), | |
548 | uentry_whereLast (ue))) | |
549 | { | |
550 | ; | |
551 | } | |
552 | } | |
553 | ||
554 | othernames = TRUE; | |
555 | } | |
556 | ||
557 | if (!ctype_match (c, ct)) | |
558 | { | |
559 | if (ctype_isDirectBool (ct)) | |
560 | { | |
561 | if (cstring_equal (e, context_getFalseName ()) | |
562 | || cstring_equal (e, context_getTrueName ())) | |
563 | { | |
a0a162cd | 564 | DPRINTF (("Here we are!")); |
885824d3 | 565 | } |
566 | else | |
567 | { | |
568 | if (optgenerror | |
569 | (FLG_INCONDEFS, | |
570 | message ("Enumerator member %s declared with " | |
571 | "inconsistent type: %s", | |
572 | e, ctype_unparse (c)), | |
573 | uentry_whereLast (ue))) | |
574 | { | |
575 | uentry_showWhereSpecifiedExtra | |
576 | (ue, cstring_copy (ctype_unparse (ct))); | |
577 | } | |
578 | } | |
579 | } | |
580 | else | |
581 | { | |
582 | if (optgenerror | |
583 | (FLG_INCONDEFS, | |
584 | message ("Enumerator member %s declared with " | |
585 | "inconsistent type: %s", | |
586 | e, ctype_unparse (c)), | |
587 | uentry_whereLast (ue))) | |
588 | { | |
589 | uentry_showWhereSpecifiedExtra | |
590 | (ue, cstring_copy (ctype_unparse (ct))); | |
591 | } | |
592 | } | |
593 | } | |
594 | } | |
595 | } end_enumNameList_elements; | |
596 | } | |
597 | ||
598 | static /*@dependent@*/ uentryList currentParamList; | |
599 | ||
600 | void setCurrentParams (/*@dependent@*/ uentryList ue) | |
601 | { | |
602 | currentParamList = ue; | |
603 | } | |
604 | ||
605 | void clearCurrentParams (void) | |
606 | { | |
607 | currentParamList = uentryList_undefined; | |
608 | } | |
609 | ||
610 | /* | |
611 | ** requires: uentry_isFunction (e) | |
612 | ** parameter names for current function are in currentParamList | |
613 | */ | |
614 | ||
615 | static void enterFunctionParams (uentryList params) | |
616 | { | |
617 | int paramno = 0; | |
618 | ||
619 | uentryList_elements (params, current) | |
620 | { | |
621 | if (uentry_hasName (current)) | |
622 | { | |
623 | uentry_setParamNo (current, paramno); | |
624 | usymtab_supEntry (uentry_copy (current)); | |
625 | } | |
626 | ||
627 | paramno++; | |
628 | } end_uentryList_elements; | |
629 | } | |
630 | ||
631 | ||
632 | extern void enterParamsTemp (void) | |
633 | { | |
634 | usymtab_enterScope (); | |
635 | enterFunctionParams (currentParamList); | |
636 | } | |
637 | ||
638 | extern void exitParamsTemp (void) | |
639 | { | |
640 | usymtab_quietPlainExitScope (); | |
641 | } | |
642 | ||
643 | static /*@exposed@*/ uentry globalDeclareFunction (idDecl tid) | |
644 | { | |
645 | ctype deftype = idDecl_getCtype (tid); | |
646 | ctype rettype; | |
647 | uentry ue; | |
648 | ||
649 | DPRINTF (("Global function: %s", idDecl_unparse (tid))); | |
650 | ||
651 | if (ctype_isFunction (deftype)) | |
652 | { | |
653 | rettype = ctype_returnValue (deftype); | |
654 | } | |
655 | else | |
656 | { | |
657 | rettype = ctype_unknown; | |
658 | } | |
659 | ||
660 | /* | |
661 | ** check has been moved here... | |
662 | */ | |
663 | ||
664 | if (ctype_isFunction (idDecl_getCtype (tid))) | |
665 | { | |
666 | ue = uentry_makeIdFunction (tid); | |
667 | reflectSpecialCode (ue); | |
668 | reflectArgsUsed (ue); | |
669 | } | |
670 | else | |
671 | { | |
672 | llparseerror (message ("Inconsistent function declaration: %q", | |
673 | idDecl_unparse (tid))); | |
674 | ||
675 | tid = idDecl_replaceCtype | |
676 | (tid, ctype_makeFunction (ctype_unknown, uentryList_undefined)); | |
677 | ue = uentry_makeIdFunction (tid); | |
678 | } | |
679 | ||
680 | reflectStorageClass (ue); | |
681 | ||
682 | uentry_checkParams (ue); | |
683 | reflectModGlobs (ue); | |
684 | ||
685 | ue = usymtab_supGlobalEntryReturn (ue); | |
686 | context_enterFunction (ue); | |
687 | enterFunctionParams (uentry_getParams (ue)); | |
688 | ||
689 | resetStorageClass (); | |
690 | return (ue); | |
691 | } | |
692 | ||
693 | /* | |
694 | ** for now, no type checking | |
695 | ** (must check later though!) | |
696 | */ | |
697 | ||
698 | static /*@only@*/ uentry globalDeclareOldStyleFunction (idDecl tid) | |
699 | { | |
700 | uentry ue; | |
701 | ||
702 | /* | |
703 | ** check has been moved here... | |
704 | */ | |
705 | ||
706 | if (cstring_equalLit (idDecl_observeId (tid), "main")) | |
707 | { | |
708 | context_setFlagTemp (FLG_MAINTYPE, FALSE); | |
709 | } | |
710 | ||
711 | ue = uentry_makeIdFunction (tid); | |
712 | reflectStorageClass (ue); | |
713 | reflectSpecialCode (ue); | |
714 | reflectArgsUsed (ue); | |
715 | uentry_setDefined (ue, g_currentloc); | |
716 | ||
717 | uentry_checkParams (ue); | |
718 | ||
719 | if (ProcessingGlobals) | |
720 | { | |
721 | uentry_setGlobals (ue, currentGlobals); | |
722 | } | |
723 | ||
724 | resetStorageClass (); | |
725 | return (ue); | |
726 | } | |
727 | ||
728 | static void oldStyleDeclareFunction (/*@only@*/ uentry e) | |
729 | { | |
730 | uentryList params = saveParamList; | |
731 | ctype rt = uentry_getType (e); | |
732 | ||
733 | llassert (ctype_isFunction (rt)); | |
734 | ||
735 | e = usymtab_supGlobalEntryReturn (e); | |
736 | ||
737 | context_enterFunction (e); | |
738 | enterFunctionParams (params); | |
739 | saveParamList = uentryList_undefined; | |
740 | resetStorageClass (); | |
741 | } | |
742 | ||
743 | void declareFunction (idDecl tid) /*@globals undef saveFunction; @*/ | |
744 | { | |
745 | uentry ue; | |
746 | ||
747 | DPRINTF (("Declare function: %s", idDecl_unparse (tid))); | |
748 | ||
749 | if (ProcessingParams) | |
750 | { | |
751 | ue = globalDeclareOldStyleFunction (tid); | |
752 | saveFunction = ue; | |
753 | } | |
754 | else | |
755 | { | |
756 | saveFunction = uentry_undefined; | |
757 | ||
758 | if (context_inRealFunction ()) | |
759 | { | |
760 | ue = uentry_makeVariableLoc (idDecl_observeId (tid), ctype_unknown); | |
761 | ||
762 | llparseerror (message ("Function declared inside function: %q", | |
763 | idDecl_unparse (tid))); | |
764 | ||
765 | context_quietExitFunction (); | |
766 | ue = usymtab_supEntryReturn (ue); | |
767 | } | |
768 | else | |
769 | { | |
770 | if (context_inInnerScope ()) | |
771 | { | |
772 | llparseerror (message ("Declaration in inner context: %q", | |
773 | idDecl_unparse (tid))); | |
774 | ||
775 | sRef_setGlobalScope (); | |
776 | ue = uentry_makeVariableLoc (idDecl_observeId (tid), | |
777 | ctype_unknown); | |
778 | ue = usymtab_supGlobalEntryReturn (ue); | |
779 | sRef_clearGlobalScope (); | |
780 | } | |
781 | else | |
782 | { | |
783 | ue = globalDeclareFunction (tid); | |
784 | } | |
785 | } | |
786 | ||
787 | resetGlobals (); | |
788 | } | |
789 | ||
790 | resetStorageClass (); | |
791 | idDecl_free (tid); | |
792 | } | |
793 | ||
794 | void declareStaticFunction (idDecl tid) /*@globals undef saveFunction; @*/ | |
795 | { | |
796 | uentry ue; | |
797 | ||
798 | DPRINTF (("Declare static funciton: %s", idDecl_unparse (tid))); | |
799 | ||
800 | if (ProcessingParams) | |
801 | { | |
802 | ue = globalDeclareOldStyleFunction (tid); | |
803 | saveFunction = ue; | |
804 | } | |
805 | else | |
806 | { | |
807 | saveFunction = uentry_undefined; | |
808 | ||
809 | if (context_inRealFunction ()) | |
810 | { | |
811 | ue = uentry_makeVariableLoc (idDecl_observeId (tid), ctype_unknown); | |
812 | ||
813 | llparseerror (message ("Function declared inside function: %q", | |
814 | idDecl_unparse (tid))); | |
815 | ||
816 | context_quietExitFunction (); | |
817 | ue = usymtab_supEntryReturn (ue); | |
818 | } | |
819 | else | |
820 | { | |
821 | if (context_inInnerScope ()) | |
822 | { | |
823 | llparseerror (message ("Declaration in inner context: %q", | |
824 | idDecl_unparse (tid))); | |
825 | ||
826 | sRef_setGlobalScope (); | |
827 | ue = uentry_makeVariableLoc (idDecl_observeId (tid), | |
828 | ctype_unknown); | |
829 | ue = usymtab_supGlobalEntryReturn (ue); | |
830 | sRef_clearGlobalScope (); | |
831 | } | |
832 | else | |
833 | { | |
834 | ctype deftype = idDecl_getCtype (tid); | |
835 | ctype rettype; | |
836 | ||
837 | if (ctype_isFunction (deftype)) | |
838 | { | |
839 | rettype = ctype_returnValue (deftype); | |
840 | } | |
841 | else | |
842 | { | |
843 | rettype = ctype_unknown; | |
844 | } | |
845 | ||
846 | /* | |
847 | ** check has been moved here... | |
848 | */ | |
849 | ||
850 | if (ctype_isFunction (idDecl_getCtype (tid))) | |
851 | { | |
852 | ue = uentry_makeIdFunction (tid); | |
853 | reflectSpecialCode (ue); | |
854 | reflectArgsUsed (ue); | |
855 | } | |
856 | else | |
857 | { | |
858 | llparseerror (message ("Inconsistent function declaration: %q", | |
859 | idDecl_unparse (tid))); | |
860 | ||
861 | tid = idDecl_replaceCtype | |
862 | (tid, ctype_makeFunction (ctype_unknown, uentryList_undefined)); | |
863 | ue = uentry_makeIdFunction (tid); | |
864 | } | |
865 | ||
866 | reflectStorageClass (ue); | |
867 | uentry_setStatic (ue); | |
868 | ||
869 | uentry_checkParams (ue); | |
870 | reflectModGlobs (ue); | |
871 | ||
872 | DPRINTF (("Sub global entry: %s", uentry_unparse (ue))); | |
873 | ue = usymtab_supGlobalEntryReturn (ue); | |
874 | ||
875 | context_enterFunction (ue); | |
876 | enterFunctionParams (uentry_getParams (ue)); | |
877 | resetStorageClass (); | |
878 | } | |
879 | } | |
880 | ||
881 | resetGlobals (); | |
882 | } | |
883 | ||
884 | resetStorageClass (); | |
885 | idDecl_free (tid); | |
886 | } | |
887 | ||
888 | void | |
889 | checkTypeDecl (uentry e, ctype rep) | |
890 | { | |
891 | cstring n = uentry_getName (e); | |
892 | ||
893 | DPRINTF (("Check type decl: %s", n)); | |
894 | ||
895 | if (cstring_equal (context_getBoolName (), n)) | |
896 | { | |
897 | ctype rrep = ctype_realType (rep); | |
898 | ||
899 | /* | |
900 | ** for abstract enum types, we need to fix the enum members: | |
901 | ** they should have the abstract type, not the rep type. | |
902 | */ | |
903 | ||
904 | if (ctype_isEnum (ctype_realType (rrep))) | |
905 | { | |
906 | enumNameList el = ctype_elist (rrep); | |
907 | ||
908 | enumNameList_elements (el, ye) | |
909 | { | |
910 | if (usymtab_existsGlob (ye)) | |
911 | { | |
912 | uentry ue = usymtab_lookupSafe (ye); | |
913 | uentry_setType (ue, ctype_bool); | |
914 | } | |
915 | ||
916 | if (cstring_equal (context_getTrueName (), ye) | |
917 | || cstring_equal (context_getFalseName (), ye)) | |
918 | { | |
919 | ; | |
920 | } | |
921 | else | |
922 | { | |
923 | vgenhinterror | |
924 | (FLG_SYNTAX, | |
925 | message ("Member of boolean enumerated type definition " | |
926 | "does not match name set to represent TRUE " | |
927 | "or FALSE: %s", | |
928 | ye), | |
929 | message ("Use -boolfalse and -booltrue to set the " | |
930 | "name of false and true boolean values."), | |
931 | uentry_whereDefined (e)); | |
932 | } | |
933 | } end_enumNameList_elements; | |
934 | } | |
935 | } | |
936 | ||
937 | if (usymtab_exists (n)) | |
938 | { | |
939 | usymId llm = usymtab_getId (n); | |
940 | uentry le = usymtab_getTypeEntry (llm); | |
941 | ||
942 | uentry_setDeclared (e, g_currentloc); | |
943 | uentry_setSref (e, sRef_makeGlobal (llm, uentry_getType (le))); | |
944 | ||
945 | DPRINTF (("Here we are: %s / %s", | |
946 | n, context_getBoolName ())); | |
947 | ||
948 | if (uentry_isAbstractDatatype (le)) | |
949 | { | |
950 | ctype rrep = ctype_realType (rep); | |
951 | ||
952 | /* | |
953 | ** for abstract enum types, we need to fix the enum members: | |
954 | ** they should have the abstract type, not the rep type. | |
955 | */ | |
956 | ||
957 | if (ctype_isEnum (ctype_realType (rrep))) | |
958 | { | |
959 | ctype at = uentry_getAbstractType (le); | |
960 | enumNameList el = ctype_elist (rrep); | |
961 | ||
962 | enumNameList_elements (el, ye) | |
963 | { | |
964 | if (usymtab_existsGlob (ye)) | |
965 | { | |
966 | uentry ue = usymtab_lookupSafe (ye); | |
967 | ||
968 | llassert (uentry_isEitherConstant (ue)); | |
969 | llassertprint (ctype_match (uentry_getType (ue), rrep), | |
970 | ("Bad enum: %s / %s", | |
971 | uentry_unparse (ue), | |
972 | ctype_unparse (rrep))); | |
973 | ||
974 | uentry_setType (ue, at); | |
975 | } | |
976 | } end_enumNameList_elements; | |
977 | } | |
978 | ||
979 | if (uentry_isMutableDatatype (le)) | |
980 | { | |
981 | /* maybe more complicated if abstract and immutable ? */ | |
982 | ||
983 | if (!ctype_isRealPointer (rep) && !ctype_isRealAbstract (rep)) | |
984 | { | |
985 | voptgenerror | |
986 | (FLG_MUTREP, | |
987 | message ("Mutable abstract type %s declared without pointer " | |
988 | "indirection: %s (violates assignment semantics)", | |
989 | n, ctype_unparse (rep)), | |
990 | uentry_whereDefined (e)); | |
991 | ||
992 | uentry_setMutable (e); | |
993 | } | |
994 | } | |
995 | } | |
996 | } | |
997 | else | |
998 | { | |
999 | fileloc fl = uentry_whereDeclared (e); | |
1000 | ||
1001 | if (context_getFlag (FLG_LIKELYBOOL) | |
1002 | && !context_getFlag (FLG_BOOLINT)) | |
1003 | { | |
1004 | if ((cstring_equalLit (n, "BOOL") | |
1005 | || cstring_equalLit (n, "Bool") | |
1006 | || cstring_equalLit (n, "bool") | |
1007 | || cstring_equalLit (n, "boolean") | |
1008 | || cstring_equalLit (n, "Boolean") | |
1009 | || cstring_equalLit (n, "BOOLEAN")) | |
1010 | && !(cstring_equal (n, context_getBoolName ()))) | |
1011 | { | |
1012 | if (context_setBoolName ()) { | |
1013 | voptgenerror | |
1014 | (FLG_LIKELYBOOL, | |
1015 | message ("Type %s is probably meant as a boolean type, but does " | |
1016 | "not match the boolean type name \"%s\".", | |
1017 | n, | |
1018 | context_getBoolName ()), | |
1019 | fl); | |
1020 | } else | |
1021 | voptgenerror | |
1022 | (FLG_LIKELYBOOL, | |
1023 | message ("Type %s is probably meant as a boolean type, " | |
1024 | "but the boolean type name is not set. " | |
1025 | "Use -booltype %s to set it.", | |
1026 | n, | |
1027 | n), | |
1028 | fl); | |
1029 | } | |
1030 | } | |
1031 | ||
1032 | if (!uentry_isStatic (e) | |
1033 | && !ctype_isFunction (uentry_getType (e)) | |
1034 | && !fileloc_isLib (fl) | |
1035 | && !fileloc_isImport (fl) | |
1036 | && fileloc_isHeader (fl)) | |
1037 | { | |
1038 | voptgenerror (FLG_EXPORTTYPE, | |
1039 | message ("Type exported, but not specified: %s\n", n), | |
1040 | fl); | |
1041 | } | |
1042 | } | |
1043 | ||
1044 | cstring_free (n); | |
1045 | } | |
1046 | ||
1047 | uentryList | |
1048 | fixUentryList (idDeclList tl, qtype q) | |
1049 | { | |
1050 | uentryList f = uentryList_new (); | |
1051 | ||
1052 | idDeclList_elements (tl, i) | |
1053 | { | |
1054 | if (idDecl_isDefined (i)) | |
1055 | { | |
1056 | uentry ue; | |
1057 | uentry old; | |
1058 | ctype rt; | |
1059 | ||
1060 | (void) idDecl_fixBase (i, q); | |
1061 | ||
1062 | /* | |
1063 | ** implicit annotations | |
1064 | */ | |
1065 | ||
1066 | (void) fixStructDecl (i); | |
1067 | ||
1068 | ue = uentry_makeIdVariable (i); | |
1069 | rt = ctype_realType (uentry_getType (ue)); | |
1070 | ||
1071 | /* | |
1072 | ** where is this here??? | |
1073 | ||
1074 | if (ctype_isArray (rt) || ctype_isSU (rt)) | |
1075 | { | |
1076 | sRef_setAllocated (uentry_getSref (ue), uentry_whereDefined (ue)); | |
1077 | } | |
1078 | ||
1079 | ** | |
1080 | */ | |
1081 | ||
1082 | if (uentry_isValid (old = uentryList_lookupField (f, uentry_rawName (ue)))) | |
1083 | { | |
1084 | if (optgenerror (FLG_SYNTAX, | |
1085 | message ("Field name reused: %s", uentry_rawName (ue)), | |
1086 | uentry_whereDefined (ue))) | |
1087 | { | |
1088 | llgenmsg (message ("Previous use of %s", uentry_rawName (ue)), | |
1089 | uentry_whereDefined (old)); | |
1090 | } | |
1091 | } | |
1092 | ||
1093 | f = uentryList_add (f, ue); | |
1094 | } | |
1095 | } end_idDeclList_elements; | |
1096 | ||
1097 | idDeclList_free (tl); | |
1098 | return (f); | |
1099 | } | |
1100 | ||
1101 | /* | |
1102 | ** This is a hack to support unnamed struct/union fields as done by | |
1103 | ** Microsoft VC++. It is not supported by the ANSI standard. | |
1104 | ** | |
1105 | ** The inner fields are added to the outer structure. This is meaningful | |
1106 | ** for nesting structs inside unions, but lclint does no related | |
1107 | ** checking. | |
1108 | */ | |
1109 | ||
1110 | uentryList | |
1111 | fixUnnamedDecl (qtype q) | |
1112 | { | |
1113 | ctype ct = ctype_realType (qtype_getType (q)); | |
1114 | ||
1115 | if (ctype_isStruct (ct) || ctype_isUnion (ct)) | |
1116 | { | |
1117 | uentryList res = ctype_getFields (ct); | |
1118 | ||
1119 | return (uentryList_copy (res)); | |
1120 | } | |
1121 | else | |
1122 | { | |
1123 | BADBRANCHCONT; | |
1124 | } | |
1125 | ||
1126 | return uentryList_undefined; | |
1127 | } | |
1128 | ||
1129 | void setStorageClass (storageClassCode sc) | |
1130 | { | |
1131 | storageClass = sc; | |
1132 | } | |
1133 | ||
1134 | void | |
1135 | setProcessingIterVars (uentry iter) | |
1136 | { | |
1137 | ProcessingIterVars = TRUE; | |
1138 | currentIter = iter; | |
1139 | saveIterParamNo = 0; | |
1140 | } | |
1141 | ||
1142 | void | |
1143 | setProcessingGlobalsList () | |
1144 | { | |
1145 | ProcessingGlobals = TRUE; | |
1146 | ||
1147 | llassert (globSet_isUndefined (currentGlobals)); | |
1148 | currentGlobals = globSet_undefined; | |
1149 | ||
1150 | llassert (sRefSet_isUndefined (fcnModifies)); | |
1151 | fcnModifies = sRefSet_undefined; | |
1152 | ||
1153 | /* | |
1154 | ** No, special clauses might have been processed first! | |
1155 | llassert (specialClauses_isUndefined (specClauses)); | |
1156 | specClauses = specialClauses_undefined; | |
1157 | */ | |
1158 | ||
1159 | fcnNoGlobals = FALSE; | |
1160 | } | |
1161 | ||
1162 | static bool ProcessingGlobMods = FALSE; | |
1163 | ||
1164 | void | |
1165 | setProcessingGlobMods () | |
1166 | { | |
1167 | ProcessingGlobMods = TRUE; | |
1168 | } | |
1169 | ||
1170 | void | |
1171 | clearProcessingGlobMods () | |
1172 | { | |
1173 | ProcessingGlobMods = FALSE; | |
1174 | } | |
1175 | ||
1176 | bool | |
1177 | isProcessingGlobMods () | |
1178 | { | |
1179 | return (ProcessingGlobMods); | |
1180 | } | |
1181 | ||
1182 | static void resetGlobals (void) | |
1183 | { | |
1184 | ProcessingGlobals = FALSE; | |
1185 | currentGlobals = globSet_undefined; | |
1186 | llassert (sRefSet_isUndefined (fcnModifies)); | |
1187 | fcnModifies = sRefSet_undefined; | |
1188 | fcnNoGlobals = FALSE; | |
1189 | } | |
1190 | ||
1191 | void | |
1192 | unsetProcessingGlobals () | |
1193 | { | |
1194 | ProcessingGlobals = FALSE; | |
1195 | } | |
1196 | ||
1197 | void | |
1198 | setProcessingVars (/*@only@*/ qtype q) | |
1199 | { | |
1200 | ProcessingVars = TRUE; | |
1201 | qtype_free (processingType); | |
1202 | processingType = q; | |
1203 | } | |
1204 | ||
1205 | static void | |
1206 | setGenericParamList (/*@dependent@*/ uentryList pm) | |
1207 | { | |
1208 | ProcessingParams = TRUE; | |
1209 | saveParamList = pm; | |
1210 | } | |
1211 | ||
1212 | void | |
1213 | setProcessingTypedef (/*@only@*/ qtype q) | |
1214 | { | |
1215 | ProcessingTypedef = TRUE; | |
1216 | ||
1217 | qtype_free (processingType); | |
1218 | processingType = q; | |
1219 | } | |
1220 | ||
1221 | void | |
1222 | unsetProcessingVars () | |
1223 | { | |
1224 | resetStorageClass (); | |
1225 | ProcessingVars = FALSE; | |
1226 | } | |
1227 | ||
1228 | void | |
1229 | doneParams () | |
1230 | { | |
1231 | if (ProcessingParams) | |
1232 | { | |
1233 | if (uentry_isInvalid (saveFunction)) | |
1234 | { | |
1235 | llbuglit ("unsetProcessingVars: no saved function\n"); | |
1236 | ||
1237 | if (sRefSet_isDefined (fcnModifies)) { | |
1238 | sRefSet_free (fcnModifies); | |
1239 | fcnModifies = sRefSet_undefined; | |
1240 | } | |
1241 | } | |
1242 | else | |
1243 | { | |
1244 | ctype ct = ctype_returnValue (uentry_getType (saveFunction)); | |
1245 | uentryList params = uentryList_copy (saveParamList); | |
1246 | ctype ct2 = ctype_makeFunction (ct, params); | |
1247 | ||
1248 | uentry_setType (saveFunction, ct2); | |
1249 | ProcessingParams = FALSE; | |
1250 | ||
1251 | reflectModGlobs (saveFunction); | |
1252 | oldStyleDeclareFunction (saveFunction); | |
1253 | saveFunction = uentry_undefined; | |
1254 | resetGlobals (); | |
1255 | } | |
1256 | } | |
1257 | else | |
1258 | { | |
1259 | /* | |
1260 | ** If the paramlist used a type name, we could be here. | |
1261 | */ | |
1262 | ||
1263 | llfatalerror (message ("%q: Old-style function parameter list uses a " | |
1264 | "type name.", fileloc_unparse (g_currentloc))); | |
1265 | } | |
1266 | } | |
1267 | ||
1268 | void | |
1269 | checkDoneParams () | |
1270 | { | |
1271 | if (uentry_isValid (saveFunction)) | |
1272 | { | |
1273 | /* | |
1274 | ** old style declaration | |
1275 | */ | |
1276 | ||
1277 | ctype ct = ctype_returnValue (uentry_getType (saveFunction)); | |
1278 | ctype ct2; | |
1279 | ||
1280 | uentryList_elements (saveParamList, current) | |
1281 | { | |
1282 | uentry_setType (current, ctype_int); /* all params are ints */ | |
1283 | } end_uentryList_elements; | |
1284 | ||
1285 | ct2 = ctype_makeParamsFunction (ct, uentryList_copy (saveParamList)); | |
1286 | ||
1287 | uentry_setType (saveFunction, ct2); | |
1288 | ProcessingParams = FALSE; | |
1289 | ||
1290 | oldStyleDeclareFunction (saveFunction); | |
1291 | saveFunction = uentry_undefined; | |
1292 | } | |
1293 | } | |
1294 | ||
1295 | void | |
1296 | unsetProcessingTypedef () | |
1297 | { | |
1298 | ProcessingTypedef = FALSE; | |
1299 | } | |
1300 | ||
1301 | void checkConstant (qtype t, idDecl id) | |
1302 | { | |
1303 | uentry e; | |
1304 | ||
1305 | id = idDecl_fixBase (id, t); | |
1306 | e = uentry_makeIdConstant (id); | |
1307 | ||
1308 | reflectStorageClass (e); | |
1309 | resetStorageClass (); | |
1310 | ||
1311 | usymtab_supGlobalEntry (e); | |
1312 | } | |
1313 | ||
1314 | void checkValueConstant (qtype t, idDecl id, exprNode e) | |
1315 | { | |
1316 | uentry ue; | |
1317 | ||
1318 | id = idDecl_fixBase (id, t); | |
1319 | ue = uentry_makeIdConstant (id); | |
1320 | reflectStorageClass (ue); | |
1321 | resetStorageClass (); | |
1322 | ||
1323 | if (exprNode_isDefined (e)) | |
1324 | { | |
1325 | if (!exprNode_matchType (uentry_getType (ue), e)) | |
1326 | { | |
1327 | (void) gentypeerror | |
1328 | (exprNode_getType (e), e, | |
1329 | uentry_getType (ue), exprNode_undefined, | |
1330 | message ("Constant %q initialized to type %t, expects %t: %s", | |
1331 | uentry_getName (ue), | |
1332 | exprNode_getType (e), | |
1333 | uentry_getType (ue), | |
1334 | exprNode_unparse (e)), | |
1335 | exprNode_loc (e)); | |
1336 | } | |
1337 | else | |
1338 | { | |
1339 | if (exprNode_hasValue (e)) | |
1340 | { | |
1341 | uentry_mergeConstantValue (ue, multiVal_copy (exprNode_getValue (e))); | |
1342 | } | |
1343 | } | |
1344 | } | |
1345 | ||
1346 | usymtab_supGlobalEntry (ue); | |
1347 | } | |
1348 | ||
1349 | ||
1350 | void processNamedDecl (idDecl t) | |
1351 | { | |
1352 | if (qtype_isUndefined (processingType)) | |
1353 | { | |
1354 | llparseerror (message ("No type before declaration name: %q", idDecl_unparse (t))); | |
1355 | ||
1356 | processingType = qtype_create (ctype_unknown); | |
1357 | } | |
1358 | ||
1359 | t = idDecl_fixBase (t, processingType); | |
1360 | ||
1361 | DPRINTF (("Declare: %s", idDecl_unparse (t))); | |
1362 | ||
1363 | if (ProcessingGlobals) | |
1364 | { | |
1365 | cstring id = idDecl_getName (t); | |
1366 | uentry ue = usymtab_lookupSafe (id); | |
1367 | ||
1368 | if (!uentry_isValid (ue)) | |
1369 | { | |
1370 | llerror (FLG_UNRECOG, | |
1371 | message ("Variable used in globals list is undeclared: %s", id)); | |
1372 | } | |
1373 | else | |
1374 | { | |
1375 | if (!ctype_match (uentry_getType (ue), idDecl_getCtype (t))) | |
1376 | { | |
1377 | voptgenerror | |
1378 | (FLG_INCONDEFS, | |
1379 | message ("Variable %s used in globals list declared %s, " | |
1380 | "but listed as %s", | |
1381 | id, ctype_unparse (uentry_getType (ue)), | |
1382 | ctype_unparse (idDecl_getCtype (t))), | |
1383 | g_currentloc); | |
1384 | } | |
1385 | else | |
1386 | { | |
1387 | sRef sr = sRef_copy (uentry_getSref (ue)); | |
1388 | ||
1389 | reflectGlobalQualifiers (sr, idDecl_getQuals (t)); | |
1390 | ||
1391 | currentGlobals = globSet_insert (currentGlobals, sr); | |
1392 | } | |
1393 | } | |
1394 | } | |
1395 | else if (ProcessingVars) | |
1396 | { | |
1397 | uentry e; | |
1398 | ctype ct; | |
1399 | ||
1400 | ct = ctype_realType (idDecl_getCtype (t)); | |
1401 | ||
1402 | if (ProcessingParams) | |
1403 | { | |
1404 | cstring id = idDecl_getName (t); | |
1405 | int paramno = uentryList_lookupRealName (saveParamList, id); | |
1406 | ||
1407 | if (paramno >= 0) | |
1408 | { | |
1409 | uentry cparam = uentryList_getN (saveParamList, paramno); | |
1410 | ||
1411 | uentry_setType (cparam, idDecl_getCtype (t)); | |
1412 | uentry_reflectQualifiers (cparam, idDecl_getQuals (t)); | |
1413 | uentry_setDeclaredOnly (cparam, context_getSaveLocation ()); | |
1414 | } | |
1415 | else | |
1416 | { | |
1417 | llfatalerrorLoc | |
1418 | (message ("Old style declaration uses unlisted parameter: %s", | |
1419 | id)); | |
1420 | } | |
1421 | } | |
1422 | else | |
1423 | { | |
1424 | fileloc loc; | |
1425 | ||
1426 | if (context_inIterDef ()) | |
1427 | { | |
1428 | cstring pname = makeParam (idDecl_observeId (t)); | |
1429 | uentry p = usymtab_lookupSafe (pname); | |
1430 | ||
1431 | cstring_free (pname); | |
1432 | ||
1433 | if (uentry_isYield (p)) | |
1434 | { | |
1435 | e = uentry_makeParam (t, sRef_getParam (uentry_getSref (p))); | |
1436 | ||
1437 | uentry_checkYieldParam (p, e); | |
1438 | ||
1439 | usymtab_supEntrySref (e); | |
1440 | return; | |
1441 | } | |
1442 | } | |
1443 | ||
1444 | if ((hasSpecialCode () || argsUsed) | |
1445 | && ctype_isFunction (idDecl_getCtype (t))) | |
1446 | { | |
1447 | e = uentry_makeIdFunction (t); | |
1448 | reflectSpecialCode (e); | |
1449 | reflectArgsUsed (e); | |
1450 | } | |
1451 | else | |
1452 | { | |
1453 | e = uentry_makeIdVariable (t); | |
1454 | } | |
1455 | ||
1456 | loc = uentry_whereDeclared (e); | |
1457 | ||
1458 | /* | |
1459 | if (context_inGlobalScope ()) | |
1460 | { | |
1461 | uentry_checkParams was here! | |
1462 | } | |
1463 | */ | |
1464 | ||
1465 | if (ctype_isFunction (uentry_getType (e))) | |
1466 | { | |
1467 | reflectModGlobs (e); | |
1468 | } | |
1469 | else | |
1470 | { | |
1471 | llassert (!globSet_isDefined (currentGlobals) | |
1472 | && !sRefSet_isDefined (fcnModifies)); | |
1473 | } | |
1474 | ||
1475 | e = usymtab_supEntrySrefReturn (e); | |
1476 | ||
1477 | if (uentry_isExtern (e) && !context_inGlobalScope ()) | |
1478 | { | |
1479 | voptgenerror | |
1480 | (FLG_NESTEDEXTERN, | |
1481 | message ("Declaration using extern inside function scope: %q", | |
1482 | uentry_unparse (e)), | |
1483 | g_currentloc); | |
1484 | ||
1485 | uentry_setDefined (e, fileloc_getExternal ()); | |
1486 | sRef_setDefined (uentry_getSref (e), fileloc_getExternal ()); | |
1487 | } | |
1488 | ||
1489 | if (uentry_isFunction (e)) | |
1490 | { | |
1491 | uentry_checkParams (e); | |
1492 | checkParamNames (e); | |
1493 | } | |
1494 | ||
1495 | if (uentry_isVar (e) | |
1496 | && uentry_isCheckedUnknown (e)) | |
1497 | { | |
1498 | sRef sr = uentry_getSref (e); | |
1499 | ||
1500 | if (sRef_isLocalVar (sr)) | |
1501 | { | |
1502 | if (context_getFlag (FLG_IMPCHECKMODINTERNALS)) | |
1503 | { | |
1504 | uentry_setCheckMod (e); | |
1505 | } | |
1506 | else | |
1507 | { | |
1508 | uentry_setUnchecked (e); | |
1509 | } | |
1510 | } | |
1511 | else if (sRef_isFileStatic (sr)) | |
1512 | { | |
1513 | if (context_getFlag (FLG_IMPCHECKEDSTRICTSTATICS)) | |
1514 | { | |
1515 | uentry_setCheckedStrict (e); | |
1516 | } | |
1517 | else if (context_getFlag (FLG_IMPCHECKEDSTATICS)) | |
1518 | { | |
1519 | uentry_setChecked (e); | |
1520 | } | |
1521 | else if (context_getFlag (FLG_IMPCHECKMODSTATICS)) | |
1522 | { | |
1523 | uentry_setCheckMod (e); | |
1524 | } | |
1525 | else | |
1526 | { | |
1527 | ; | |
1528 | } | |
1529 | } | |
1530 | else /* real global */ | |
1531 | { | |
1532 | llassert (sRef_isRealGlobal (sr)); | |
1533 | ||
1534 | if (context_getFlag (FLG_IMPCHECKEDSTRICTGLOBALS)) | |
1535 | { | |
1536 | uentry_setCheckedStrict (e); | |
1537 | } | |
1538 | else if (context_getFlag (FLG_IMPCHECKEDGLOBALS)) | |
1539 | { | |
1540 | uentry_setChecked (e); | |
1541 | } | |
1542 | else if (context_getFlag (FLG_IMPCHECKMODGLOBALS)) | |
1543 | { | |
1544 | uentry_setCheckMod (e); | |
1545 | } | |
1546 | else | |
1547 | { | |
1548 | ; | |
1549 | } | |
1550 | } | |
1551 | } | |
1552 | } | |
1553 | } | |
1554 | else if (ProcessingTypedef) | |
1555 | { | |
1556 | ctype ct = idDecl_getCtype (t); | |
1557 | uentry e; | |
1558 | ||
1559 | DPRINTF (("Processing typedef: %s", ctype_unparse (ct))); | |
1560 | ||
1561 | e = uentry_makeIdDatatype (t); | |
1562 | ||
1563 | if (cstring_equal (idDecl_getName (t), context_getBoolName ())) { | |
1564 | ctype rt = ctype_realType (ct); | |
1565 | ||
1566 | if (ctype_isEnum (rt)) { | |
1567 | ; | |
1568 | } else { | |
1569 | if (!(ctype_isInt (rt) | |
1570 | || ctype_isUnknown (rt) | |
1571 | || ctype_isChar (rt))) { | |
1572 | (void) llgenerror | |
1573 | (FLG_BOOLTYPE, | |
1574 | message ("Boolean type %s defined using non-standard type %s (integral, char or enum type expected)", | |
1575 | context_getBoolName (), | |
1576 | ctype_unparse (ct)), | |
1577 | uentry_whereLast (e)); | |
1578 | } | |
1579 | ||
1580 | ct = ctype_bool; | |
1581 | uentry_setType (e, ct); | |
1582 | } | |
1583 | } | |
1584 | ||
1585 | reflectStorageClass (e); | |
1586 | checkTypeDecl (e, ct); | |
1587 | ||
1588 | e = usymtab_supReturnTypeEntry (e); | |
1589 | ||
1590 | if (uentry_isMaybeAbstract (e)) | |
1591 | { | |
1592 | if (context_getFlag (FLG_IMPABSTRACT)) | |
1593 | { | |
1594 | uentry_setAbstract (e); | |
1595 | } | |
1596 | else | |
1597 | { | |
1598 | uentry_setConcrete (e); | |
1599 | } | |
1600 | } | |
1601 | } | |
1602 | else | |
1603 | { | |
1604 | llparseerror (message ("Suspect missing struct or union keyword: %q", | |
1605 | idDecl_unparse (t))); | |
1606 | } | |
1607 | ||
1608 | } | |
1609 | ||
1610 | /* | |
1611 | ** moved from grammar | |
1612 | */ | |
1613 | ||
1614 | static idDecl fixStructDecl (/*@returned@*/ idDecl d) | |
1615 | { | |
1616 | if (ctype_isVisiblySharable (idDecl_getCtype (d)) | |
1617 | && context_getFlag (FLG_STRUCTIMPONLY)) | |
1618 | { | |
1619 | if (!qualList_hasAliasQualifier (idDecl_getQuals (d))) | |
1620 | { | |
1621 | if (qualList_hasExposureQualifier (idDecl_getQuals (d))) | |
1622 | { | |
1623 | idDecl_addQual (d, qual_createDependent ()); | |
1624 | } | |
1625 | else | |
1626 | { | |
1627 | idDecl_addQual (d, qual_createImpOnly ()); | |
1628 | } | |
1629 | } | |
1630 | } | |
1631 | ||
1632 | return d; | |
1633 | } | |
1634 | ||
1635 | ctype | |
1636 | declareUnnamedStruct (/*@only@*/ uentryList f) | |
1637 | { | |
1638 | if (context_maybeSet (FLG_NUMSTRUCTFIELDS)) | |
1639 | { | |
1640 | int num = uentryList_size (f); | |
1641 | int max = context_getValue (FLG_NUMSTRUCTFIELDS); | |
1642 | ||
1643 | if (num > max) | |
1644 | { | |
1645 | voptgenerror | |
1646 | (FLG_NUMSTRUCTFIELDS, | |
1647 | message ("Structure declared with %d fields " | |
1648 | "(limit is set to %d)", | |
1649 | num, max), | |
1650 | g_currentloc); | |
1651 | } | |
1652 | } | |
1653 | ||
1654 | return (ctype_createUnnamedStruct (f)); | |
1655 | } | |
1656 | ||
1657 | ctype | |
1658 | declareUnnamedUnion (/*@only@*/ uentryList f) | |
1659 | { | |
1660 | if (context_maybeSet (FLG_NUMSTRUCTFIELDS)) | |
1661 | { | |
1662 | int num = uentryList_size (f); | |
1663 | int max = context_getValue (FLG_NUMSTRUCTFIELDS); | |
1664 | ||
1665 | if (num > max) | |
1666 | { | |
1667 | voptgenerror | |
1668 | (FLG_NUMSTRUCTFIELDS, | |
1669 | message ("Union declared with %d fields " | |
1670 | "(limit is set to %d)", | |
1671 | num, max), | |
1672 | g_currentloc); | |
1673 | } | |
1674 | } | |
1675 | ||
1676 | return (ctype_createUnnamedUnion (f)); | |
1677 | } | |
1678 | ||
1679 | ctype declareStruct (cstring id, /*@only@*/ uentryList f) | |
1680 | { | |
1681 | ctype ct; | |
1682 | uentry ue; | |
1683 | int num = uentryList_size (f); | |
1684 | ||
1685 | ct = ctype_createStruct (cstring_copy (id), f); | |
a0a162cd | 1686 | DPRINTF (("Declare struct: %s [%d]", ctype_unparse (ct), ct)); |
885824d3 | 1687 | ue = uentry_makeStructTagLoc (id, ct); |
1688 | ||
1689 | if (context_maybeSet (FLG_NUMSTRUCTFIELDS)) | |
1690 | { | |
1691 | int max = context_getValue (FLG_NUMSTRUCTFIELDS); | |
1692 | ||
1693 | if (num > max) | |
1694 | { | |
1695 | voptgenerror | |
1696 | (FLG_NUMSTRUCTFIELDS, | |
1697 | message ("Structure %q declared with %d fields " | |
1698 | "(limit is set to %d)", | |
1699 | uentry_getName (ue), num, max), | |
1700 | uentry_whereLast (ue)); | |
1701 | } | |
1702 | } | |
1703 | ||
1704 | return (usymtab_supTypeEntry (ue)); | |
1705 | } | |
1706 | ||
1707 | ctype declareUnion (cstring id, uentryList f) | |
1708 | { | |
1709 | ctype ct; | |
1710 | uentry ue; | |
1711 | int num = uentryList_size (f); | |
1712 | ||
1713 | ct = ctype_createUnion (cstring_copy (id), f); | |
1714 | ue = uentry_makeUnionTagLoc (id, ct); | |
1715 | ||
1716 | if (context_maybeSet (FLG_NUMSTRUCTFIELDS)) | |
1717 | { | |
1718 | int max = context_getValue (FLG_NUMSTRUCTFIELDS); | |
1719 | ||
1720 | if (num > max) | |
1721 | { | |
1722 | voptgenerror | |
1723 | (FLG_NUMSTRUCTFIELDS, | |
1724 | message ("Union %q declared with %d fields " | |
1725 | "(limit is set to %d)", | |
1726 | uentry_getName (ue), num, max), | |
1727 | uentry_whereLast (ue)); | |
1728 | } | |
1729 | } | |
1730 | ||
1731 | return (usymtab_supTypeEntry (ue)); | |
1732 | } | |
1733 | ||
1734 | ctype handleStruct (/*@only@*/ cstring id) | |
1735 | { | |
1736 | if (usymtab_existsStructTag (id)) | |
1737 | { | |
1738 | ctype ct = uentry_getAbstractType (usymtab_lookupStructTag (id)); | |
1739 | ||
1740 | cstring_free (id); | |
1741 | return ct; | |
1742 | } | |
1743 | else | |
1744 | { | |
1745 | return (ctype_createForwardStruct (id)); | |
1746 | } | |
1747 | } | |
1748 | ||
1749 | ctype handleUnion (/*@only@*/ cstring id) | |
1750 | { | |
1751 | if (usymtab_existsUnionTag (id)) | |
1752 | { | |
1753 | ctype ret = uentry_getAbstractType (usymtab_lookupUnionTag (id)); | |
1754 | cstring_free (id); | |
1755 | return (ret); | |
1756 | } | |
1757 | else | |
1758 | { | |
1759 | return (ctype_createForwardUnion (id)); | |
1760 | } | |
1761 | } | |
1762 | ||
1763 | ctype | |
1764 | handleEnum (cstring id) | |
1765 | { | |
1766 | if (usymtab_existsEnumTag (id)) | |
1767 | { | |
1768 | ctype ret = uentry_getAbstractType (usymtab_lookupEnumTag (id)); | |
1769 | cstring_free (id); | |
1770 | return ret; | |
1771 | } | |
1772 | else | |
1773 | { | |
1774 | return (declareEnum (id, enumNameList_new ())); | |
1775 | } | |
1776 | } | |
1777 | ||
1778 | bool processingIterVars (void) | |
1779 | { | |
1780 | return ProcessingIterVars; | |
1781 | } | |
1782 | ||
1783 | uentry getCurrentIter (void) | |
1784 | { | |
1785 | return currentIter; | |
1786 | } | |
1787 | ||
1788 | static bool flipOldStyle = FALSE; | |
1789 | static bool flipNewStyle = TRUE; | |
1790 | ||
1791 | void setFlipOldStyle () { flipOldStyle = TRUE; } | |
1792 | bool isFlipOldStyle () { return flipOldStyle; } | |
1793 | bool isNewStyle () { return flipNewStyle; } | |
1794 | void setNewStyle () { flipNewStyle = TRUE; } | |
1795 | ||
1796 | /*@dependent@*/ uentryList handleParamIdList (/*@dependent@*/ uentryList params) | |
1797 | { | |
1798 | int paramno = 0; | |
1799 | ||
1800 | /* | |
1801 | ** this is a really YUCKY hack to handle old style | |
1802 | ** declarations. | |
1803 | */ | |
1804 | ||
1805 | voptgenerror (FLG_OLDSTYLE, | |
1806 | cstring_makeLiteral ("Old style function declaration"), | |
1807 | g_currentloc); | |
1808 | ||
1809 | uentryList_elements (params, current) | |
1810 | { | |
1811 | uentry_setParam (current); | |
1812 | uentry_setSref (current, sRef_makeParam (paramno, ctype_unknown)); | |
1813 | paramno++; | |
1814 | } end_uentryList_elements; | |
1815 | ||
1816 | setGenericParamList (params); | |
1817 | g_expectingTypeName = TRUE; | |
1818 | ||
1819 | return params; | |
1820 | } | |
1821 | ||
1822 | /*@dependent@*/ uentryList handleParamTypeList (/*@returned@*/ uentryList params) | |
1823 | { | |
1824 | if (flipOldStyle) | |
1825 | { | |
1826 | uentryList_fixMissingNames (params); | |
1827 | ||
1828 | voptgenerror (FLG_OLDSTYLE, | |
1829 | cstring_makeLiteral ("Old style function declaration."), | |
1830 | g_currentloc); | |
1831 | ||
1832 | setGenericParamList (params); | |
1833 | flipOldStyle = FALSE; | |
1834 | g_expectingTypeName = TRUE; | |
1835 | } | |
1836 | ||
1837 | return (params); | |
1838 | } | |
1839 | ||
1840 | void | |
1841 | doVaDcl () | |
1842 | { | |
1843 | ctype c = ctype_unknown; | |
1844 | cstring id = cstring_makeLiteral ("va_alist"); | |
1845 | uentry e; | |
1846 | ||
1847 | if (ProcessingParams) | |
1848 | { | |
1849 | int i = uentryList_lookupRealName (saveParamList, id); | |
1850 | ||
1851 | if (i >= 0) | |
1852 | { | |
1853 | e = uentry_makeVariableSrefParam (id, c, sRef_makeParam (i, c)); | |
1854 | } | |
1855 | else | |
1856 | { | |
1857 | e = uentry_undefined; /* suppress gcc message */ | |
1858 | llfatalerrorLoc (cstring_makeLiteral ("va_dcl used without va_alist")); | |
1859 | } | |
1860 | } | |
1861 | else | |
1862 | { | |
1863 | llerror (FLG_SYNTAX, cstring_makeLiteral ("va_dcl used outside of function declaration")); | |
1864 | e = uentry_makeVariableLoc (id, c); | |
1865 | } | |
1866 | ||
1867 | cstring_free (id); | |
1868 | uentry_setUsed (e, g_currentloc); | |
1869 | usymtab_supEntrySref (e); | |
1870 | } | |
1871 | ||
1872 | /*@exposed@*/ sRef modListPointer (sRef s) | |
1873 | { | |
1874 | ctype ct = sRef_getType (s); | |
1875 | ctype rt = ctype_realType (ct); | |
1876 | ||
1877 | if (ctype_isAP (rt)) | |
1878 | { | |
1879 | if (context_inHeader () && ctype_isAbstract (ct)) | |
1880 | { | |
1881 | voptgenerror | |
1882 | (FLG_ABSTRACT, | |
1883 | message | |
1884 | ("Modifies clause in header file dereferences abstract " | |
1885 | "type %s (interface modifies clause should not depend " | |
1886 | "on or expose type representation): %q", | |
1887 | ctype_unparse (ct), | |
1888 | sRef_unparse (s)), | |
1889 | g_currentloc); | |
1890 | } | |
1891 | ||
1892 | return (sRef_constructPointer (s)); | |
1893 | } | |
1894 | else | |
1895 | { | |
1896 | if (ctype_isKnown (rt)) | |
1897 | { | |
1898 | voptgenerror | |
1899 | (FLG_TYPE, | |
1900 | message ("Implementation modifies clause dereferences non-pointer (type %s): %q", | |
1901 | ctype_unparse (rt), | |
1902 | sRef_unparse (s)), | |
1903 | g_currentloc); | |
1904 | } | |
1905 | ||
1906 | return s; | |
1907 | } | |
1908 | } | |
1909 | ||
1910 | /*@exposed@*/ sRef modListFieldAccess (sRef s, cstring f) | |
1911 | { | |
1912 | ctype ct = sRef_getType (s); | |
1913 | ctype rt = ctype_realType (ct); | |
1914 | ||
1915 | if (ctype_isStructorUnion (rt)) | |
1916 | { | |
1917 | uentry tf = uentryList_lookupField (ctype_getFields (rt), f); | |
1918 | ||
1919 | if (uentry_isUndefined (tf)) | |
1920 | { | |
1921 | voptgenerror (FLG_TYPE, | |
1922 | message ("Modifies list accesses non-existent " | |
1923 | "field %s of %t: %q", f, ct, | |
1924 | sRef_unparse (s)), | |
1925 | g_currentloc); | |
1926 | ||
1927 | cstring_free (f); | |
1928 | return sRef_undefined; | |
1929 | } | |
1930 | else | |
1931 | { | |
1932 | if (ctype_isAbstract (ct) && context_inHeader ()) | |
1933 | { | |
1934 | voptgenerror | |
1935 | (FLG_ABSTRACT, | |
1936 | message | |
1937 | ("Modifies clause in header file accesses abstract " | |
1938 | "type %s (interface modifies clause should not depend " | |
1939 | "on or expose type representation): %q", | |
1940 | ctype_unparse (ct), | |
1941 | sRef_unparse (s)), | |
1942 | g_currentloc); | |
1943 | } | |
1944 | } | |
1945 | ||
1946 | cstring_markOwned (f); | |
1947 | return (sRef_makeField (s, f)); | |
1948 | } | |
1949 | else | |
1950 | { | |
1951 | voptgenerror | |
1952 | (FLG_TYPE, | |
1953 | message ("Modifies clause dereferences non-pointer (type %s): %q", | |
1954 | ctype_unparse (rt), | |
1955 | sRef_unparse (s)), | |
1956 | g_currentloc); | |
1957 | ||
1958 | cstring_free (f); | |
1959 | return s; | |
1960 | } | |
1961 | } | |
1962 | ||
1963 | sRef globListUnrecognized (cstring s) | |
1964 | { | |
1965 | if (cstring_equalLit (s, "nothing")) | |
1966 | { | |
1967 | return sRef_makeNothing (); | |
1968 | } | |
1969 | else if (cstring_equalLit (s, "internalState")) | |
1970 | { | |
1971 | return sRef_makeInternalState (); | |
1972 | } | |
1973 | else if (cstring_equalLit (s, "fileSystem") | |
1974 | || cstring_equalLit (s, "systemState")) | |
1975 | { | |
1976 | return sRef_makeSystemState (); | |
1977 | } | |
1978 | else | |
1979 | { | |
1980 | voptgenerror | |
1981 | (FLG_UNRECOG, | |
1982 | message ("Unrecognized identifier in globals list: %s", s), | |
1983 | g_currentloc); | |
1984 | ||
1985 | return sRef_undefined; | |
1986 | } | |
1987 | } | |
1988 | ||
1989 | /*@exposed@*/ sRef modListArrowAccess (sRef s, cstring f) | |
1990 | { | |
1991 | ctype ct = sRef_getType (s); | |
1992 | ctype rt = ctype_realType (ct); | |
1993 | ||
1994 | if (ctype_isRealPointer (rt)) | |
1995 | { | |
1996 | ctype b = ctype_baseArrayPtr (rt); | |
1997 | ctype rb = ctype_realType (b); | |
1998 | ||
1999 | if (ctype_isStructorUnion (rb)) | |
2000 | { | |
2001 | uentry tf = uentryList_lookupField (ctype_getFields (rb), f); | |
2002 | ||
2003 | if (uentry_isUndefined (tf)) | |
2004 | { | |
2005 | voptgenerror (FLG_TYPE, | |
2006 | message ("Modifies list arrow accesses non-existent " | |
2007 | "field %s of %t: %q", f, b, | |
2008 | sRef_unparse (s)), | |
2009 | g_currentloc); | |
2010 | ||
2011 | cstring_free (f); | |
2012 | return sRef_undefined; | |
2013 | } | |
2014 | else | |
2015 | { | |
2016 | if (context_inHeader ()) | |
2017 | { | |
2018 | if (ctype_isAbstract (b)) | |
2019 | { | |
2020 | voptgenerror | |
2021 | (FLG_ABSTRACT, | |
2022 | message | |
2023 | ("Modifies clause in header file arrow accesses abstract " | |
2024 | "type %s (interface modifies clause should not depend " | |
2025 | "on or expose type representation): %q", | |
2026 | ctype_unparse (b), | |
2027 | sRef_unparse (s)), | |
2028 | g_currentloc); | |
2029 | } | |
2030 | } | |
2031 | else | |
2032 | { | |
2033 | if (ctype_isAbstract (ct)) | |
2034 | { | |
2035 | voptgenerror | |
2036 | (FLG_ABSTRACT, | |
2037 | message | |
2038 | ("Modifies clause in header file arrow accesses abstract " | |
2039 | "type %s (interface modifies clause should not depend " | |
2040 | "on or expose type representation): %q", | |
2041 | ctype_unparse (ct), | |
2042 | sRef_unparse (s)), | |
2043 | g_currentloc); | |
2044 | } | |
2045 | } | |
2046 | } | |
2047 | ||
2048 | cstring_markOwned (f); | |
2049 | return (sRef_makeArrow (s, f)); | |
2050 | } | |
2051 | else | |
2052 | { | |
2053 | voptgenerror | |
2054 | (FLG_TYPE, | |
2055 | message ("Modifies clause arrow accesses pointer to " | |
2056 | "non-structure (type %s): %q", | |
2057 | ctype_unparse (rt), | |
2058 | sRef_unparse (s)), | |
2059 | g_currentloc); | |
2060 | } | |
2061 | } | |
2062 | else | |
2063 | { | |
2064 | voptgenerror | |
2065 | (FLG_TYPE, | |
2066 | message ("Modifies clause arrow accesses non-pointer (type %s): %q", | |
2067 | ctype_unparse (rt), | |
2068 | sRef_unparse (s)), | |
2069 | g_currentloc); | |
2070 | } | |
2071 | ||
2072 | cstring_free (f); | |
2073 | return s; | |
2074 | } | |
2075 | ||
2076 | sRef checkSpecClausesId (uentry ue) | |
2077 | { | |
2078 | cstring s = uentry_rawName (ue); | |
2079 | ||
2080 | if (sRef_isGlobal (uentry_getSref (ue))) | |
2081 | { | |
2082 | voptgenerror | |
2083 | (FLG_SYNTAX, | |
2084 | message ("Global variable %s used special clause. (Global variables " | |
2085 | "are not recognized in special clauses. If there is " | |
2086 | "sufficient interest in support for this, it may be " | |
2087 | "added to a future release. Send mail to " | |
2088 | "lclint@cs.virginia.edu.)", | |
2089 | s), | |
2090 | g_currentloc); | |
2091 | ||
2092 | return sRef_undefined; | |
2093 | } | |
2094 | else | |
2095 | { | |
2096 | if (cstring_equalLit (s, "result")) | |
2097 | { | |
2098 | if (optgenerror | |
2099 | (FLG_SYNTAX, | |
2100 | message ("Special clause list uses %s which is a variable and has special " | |
2101 | "meaning in a modifies list. (Special meaning assumed.)", s), | |
2102 | g_currentloc)) | |
2103 | { | |
2104 | uentry_showWhereDeclared (ue); | |
2105 | } | |
2106 | } | |
2107 | ||
2108 | return uentry_getSref (ue); | |
2109 | } | |
2110 | } | |
2111 | ||
2112 | ||
2113 | void checkModifiesId (uentry ue) | |
2114 | { | |
2115 | cstring s = uentry_rawName (ue); | |
2116 | ||
2117 | if (cstring_equalLit (s, "nothing") | |
2118 | || cstring_equalLit (s, "internalState") | |
2119 | || cstring_equalLit (s, "systemState") | |
2120 | || (cstring_equalLit (s, "fileSystem"))) | |
2121 | { | |
2122 | if (optgenerror | |
2123 | (FLG_SYNTAX, | |
2124 | message ("Modifies list uses %s which is a variable and has special " | |
2125 | "meaning in a modifies list. (Special meaning assumed.)", s), | |
2126 | g_currentloc)) | |
2127 | { | |
2128 | uentry_showWhereDeclared (ue); | |
2129 | } | |
2130 | } | |
2131 | } | |
2132 | ||
2133 | /*@exposed@*/ sRef fixModifiesId (cstring s) | |
2134 | { | |
2135 | sRef ret; | |
2136 | cstring pname = makeParam (s); | |
2137 | uentry ue = usymtab_lookupSafe (pname); | |
2138 | ||
2139 | cstring_free (pname); | |
2140 | ||
2141 | if (cstring_equalLit (s, "nothing")) | |
2142 | { | |
2143 | ret = sRef_makeNothing (); | |
2144 | } | |
2145 | else if (cstring_equalLit (s, "internalState")) | |
2146 | { | |
2147 | ret = sRef_makeInternalState (); | |
2148 | } | |
2149 | else if (cstring_equalLit (s, "fileSystem") | |
2150 | || cstring_equalLit (s, "systemState")) | |
2151 | { | |
2152 | ret = sRef_makeSystemState (); | |
2153 | } | |
2154 | else | |
2155 | { | |
2156 | ret = sRef_undefined; | |
2157 | } | |
2158 | ||
2159 | if (sRef_isValid (ret)) | |
2160 | { | |
2161 | if (uentry_isValid (ue)) | |
2162 | { | |
2163 | voptgenerror | |
2164 | (FLG_SYNTAX, | |
2165 | message ("Modifies list uses %s which is a parameter and has special " | |
2166 | "meaning in a modifies list. (Special meaning assumed.)", s), | |
2167 | g_currentloc); | |
2168 | } | |
2169 | } | |
2170 | else | |
2171 | { | |
2172 | if (uentry_isValid (ue)) | |
2173 | { | |
2174 | ret = uentry_getSref (ue); | |
2175 | } | |
2176 | else | |
2177 | { | |
2178 | fileloc loc = fileloc_decColumn (g_currentloc, cstring_length (s)); | |
2179 | ret = sRef_undefined; | |
2180 | ||
2181 | voptgenerror | |
2182 | (FLG_UNRECOG, | |
2183 | message ("Unrecognized identifier in modifies comment: %s", s), | |
2184 | loc); | |
2185 | ||
2186 | fileloc_free (loc); | |
2187 | } | |
2188 | } | |
2189 | ||
2190 | return ret; | |
2191 | } | |
2192 | ||
2193 | sRef fixSpecClausesId (cstring s) | |
2194 | { | |
2195 | sRef ret; | |
2196 | cstring pname = makeParam (s); | |
2197 | uentry ue = usymtab_lookupSafe (pname); | |
2198 | ||
2199 | cstring_free (pname); | |
2200 | ||
2201 | if (cstring_equalLit (s, "result")) | |
2202 | { | |
2203 | ret = sRef_makeResult (); | |
2204 | } | |
2205 | else | |
2206 | { | |
2207 | ret = sRef_undefined; | |
2208 | } | |
2209 | ||
2210 | if (sRef_isValid (ret)) | |
2211 | { | |
2212 | if (uentry_isValid (ue)) | |
2213 | { | |
2214 | voptgenerror | |
2215 | (FLG_SYNTAX, | |
2216 | message ("Special clause uses %s which is a parameter and has special " | |
2217 | "meaning in a special clause. (Special meaning assumed.)", s), | |
2218 | g_currentloc); | |
2219 | } | |
2220 | } | |
2221 | else | |
2222 | { | |
2223 | if (uentry_isValid (ue)) | |
2224 | { | |
2225 | ret = uentry_getSref (ue); | |
2226 | ||
2227 | if (sRef_isGlobal (ret)) | |
2228 | { | |
2229 | voptgenerror | |
2230 | (FLG_SYNTAX, | |
2231 | message ("Global variable %s used special clause. (Global variables " | |
2232 | "are not recognized in special clauses. If there is " | |
2233 | "sufficient interest in support for this, it may be " | |
2234 | "added to a future release. Send mail to " | |
2235 | "lclint@cs.virginia.edu.)", | |
2236 | s), | |
2237 | g_currentloc); | |
2238 | ||
2239 | ret = sRef_undefined; | |
2240 | } | |
2241 | } | |
2242 | else | |
2243 | { | |
2244 | fileloc loc = fileloc_decColumn (g_currentloc, cstring_length (s)); | |
2245 | ret = sRef_undefined; | |
2246 | ||
2247 | voptgenerror | |
2248 | (FLG_UNRECOG, | |
2249 | message ("Unrecognized identifier in special clause: %s", s), | |
2250 | loc); | |
2251 | ||
2252 | fileloc_free (loc); | |
2253 | } | |
2254 | } | |
2255 | ||
2256 | return ret; | |
2257 | } | |
2258 | ||
2259 | sRef modListArrayFetch (sRef s, /*@unused@*/ sRef mexp) | |
2260 | { | |
2261 | ctype ct = sRef_getType (s); | |
2262 | ctype rt = ctype_realType (ct); | |
2263 | ||
2264 | if (ctype_isAP (rt)) | |
2265 | { | |
2266 | if (context_inHeader () && ctype_isAbstract (ct)) | |
2267 | { | |
2268 | voptgenerror | |
2269 | (FLG_ABSTRACT, | |
2270 | message | |
2271 | ("Modifies clause in header file indexes abstract " | |
2272 | "type %s (interface modifies clause should not depend " | |
2273 | "on or expose type representation): %q", | |
2274 | ctype_unparse (ct), | |
2275 | sRef_unparse (s)), | |
2276 | g_currentloc); | |
2277 | } | |
2278 | ||
2279 | return (sRef_makeAnyArrayFetch (s)); | |
2280 | } | |
2281 | else | |
2282 | { | |
2283 | voptgenerror | |
2284 | (FLG_TYPE, | |
2285 | message | |
2286 | ("Implementation modifies clause uses array fetch on non-array (type %s): %q", | |
2287 | ctype_unparse (ct), sRef_unparse (s)), | |
2288 | g_currentloc); | |
2289 | return s; | |
2290 | } | |
2291 | } | |
2292 | ||
2293 | ||
2294 | ||
2295 | ||
2296 | ||
2297 | ||
2298 | ||
2299 |