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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 | ||
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 | } | |
512 | else | |
513 | { | |
514 | if (boolnames) | |
515 | { | |
516 | if (optgenerror | |
517 | (FLG_INCONDEFS, | |
518 | message ("Enumerator mixes boolean names (%s, %s) with " | |
519 | "non-boolean name: %s", | |
520 | context_getTrueName (), | |
521 | context_getFalseName (), | |
522 | e), | |
523 | uentry_whereLast (ue))) | |
524 | { | |
525 | ; | |
526 | } | |
527 | } | |
528 | ||
529 | othernames = TRUE; | |
530 | } | |
531 | ||
532 | if (!ctype_match (c, ct)) | |
533 | { | |
534 | if (ctype_isDirectBool (ct)) | |
535 | { | |
536 | if (cstring_equal (e, context_getFalseName ()) | |
537 | || cstring_equal (e, context_getTrueName ())) | |
538 | { | |
539 | ; | |
540 | } | |
541 | else | |
542 | { | |
543 | if (optgenerror | |
544 | (FLG_INCONDEFS, | |
545 | message ("Enumerator member %s declared with " | |
546 | "inconsistent type: %s", | |
547 | e, ctype_unparse (c)), | |
548 | uentry_whereLast (ue))) | |
549 | { | |
550 | uentry_showWhereSpecifiedExtra | |
551 | (ue, cstring_copy (ctype_unparse (ct))); | |
552 | } | |
553 | } | |
554 | } | |
555 | else | |
556 | { | |
557 | if (optgenerror | |
558 | (FLG_INCONDEFS, | |
559 | message ("Enumerator member %s declared with " | |
560 | "inconsistent type: %s", | |
561 | e, ctype_unparse (c)), | |
562 | uentry_whereLast (ue))) | |
563 | { | |
564 | uentry_showWhereSpecifiedExtra | |
565 | (ue, cstring_copy (ctype_unparse (ct))); | |
566 | } | |
567 | } | |
568 | } | |
569 | } | |
570 | } end_enumNameList_elements; | |
571 | } | |
572 | ||
573 | static /*@dependent@*/ uentryList currentParamList; | |
574 | ||
575 | void setCurrentParams (/*@dependent@*/ uentryList ue) | |
576 | { | |
577 | currentParamList = ue; | |
578 | } | |
579 | ||
580 | void clearCurrentParams (void) | |
581 | { | |
582 | currentParamList = uentryList_undefined; | |
583 | } | |
584 | ||
585 | /* | |
586 | ** requires: uentry_isFunction (e) | |
587 | ** parameter names for current function are in currentParamList | |
588 | */ | |
589 | ||
590 | static void enterFunctionParams (uentryList params) | |
591 | { | |
592 | int paramno = 0; | |
593 | ||
594 | uentryList_elements (params, current) | |
595 | { | |
596 | if (uentry_hasName (current)) | |
597 | { | |
598 | uentry_setParamNo (current, paramno); | |
599 | usymtab_supEntry (uentry_copy (current)); | |
600 | } | |
601 | ||
602 | paramno++; | |
603 | } end_uentryList_elements; | |
604 | } | |
605 | ||
606 | ||
607 | extern void enterParamsTemp (void) | |
608 | { | |
609 | usymtab_enterScope (); | |
610 | enterFunctionParams (currentParamList); | |
611 | } | |
612 | ||
613 | extern void exitParamsTemp (void) | |
614 | { | |
615 | usymtab_quietPlainExitScope (); | |
616 | } | |
617 | ||
618 | static /*@exposed@*/ uentry globalDeclareFunction (idDecl tid) | |
619 | { | |
620 | ctype deftype = idDecl_getCtype (tid); | |
621 | ctype rettype; | |
622 | uentry ue; | |
623 | ||
624 | DPRINTF (("Global function: %s", idDecl_unparse (tid))); | |
625 | ||
626 | if (ctype_isFunction (deftype)) | |
627 | { | |
628 | rettype = ctype_returnValue (deftype); | |
629 | } | |
630 | else | |
631 | { | |
632 | rettype = ctype_unknown; | |
633 | } | |
634 | ||
635 | /* | |
636 | ** check has been moved here... | |
637 | */ | |
638 | ||
639 | if (ctype_isFunction (idDecl_getCtype (tid))) | |
640 | { | |
641 | ue = uentry_makeIdFunction (tid); | |
642 | reflectSpecialCode (ue); | |
643 | reflectArgsUsed (ue); | |
644 | } | |
645 | else | |
646 | { | |
647 | llparseerror (message ("Inconsistent function declaration: %q", | |
648 | idDecl_unparse (tid))); | |
649 | ||
650 | tid = idDecl_replaceCtype | |
651 | (tid, ctype_makeFunction (ctype_unknown, uentryList_undefined)); | |
652 | ue = uentry_makeIdFunction (tid); | |
653 | } | |
654 | ||
655 | reflectStorageClass (ue); | |
656 | ||
657 | uentry_checkParams (ue); | |
658 | reflectModGlobs (ue); | |
659 | ||
660 | ue = usymtab_supGlobalEntryReturn (ue); | |
661 | context_enterFunction (ue); | |
662 | enterFunctionParams (uentry_getParams (ue)); | |
663 | ||
664 | resetStorageClass (); | |
665 | return (ue); | |
666 | } | |
667 | ||
668 | /* | |
669 | ** for now, no type checking | |
670 | ** (must check later though!) | |
671 | */ | |
672 | ||
673 | static /*@only@*/ uentry globalDeclareOldStyleFunction (idDecl tid) | |
674 | { | |
675 | uentry ue; | |
676 | ||
677 | /* | |
678 | ** check has been moved here... | |
679 | */ | |
680 | ||
681 | if (cstring_equalLit (idDecl_observeId (tid), "main")) | |
682 | { | |
683 | context_setFlagTemp (FLG_MAINTYPE, FALSE); | |
684 | } | |
685 | ||
686 | ue = uentry_makeIdFunction (tid); | |
687 | reflectStorageClass (ue); | |
688 | reflectSpecialCode (ue); | |
689 | reflectArgsUsed (ue); | |
690 | uentry_setDefined (ue, g_currentloc); | |
691 | ||
692 | uentry_checkParams (ue); | |
693 | ||
694 | if (ProcessingGlobals) | |
695 | { | |
696 | uentry_setGlobals (ue, currentGlobals); | |
697 | } | |
698 | ||
699 | resetStorageClass (); | |
700 | return (ue); | |
701 | } | |
702 | ||
703 | static void oldStyleDeclareFunction (/*@only@*/ uentry e) | |
704 | { | |
705 | uentryList params = saveParamList; | |
706 | ctype rt = uentry_getType (e); | |
707 | ||
708 | llassert (ctype_isFunction (rt)); | |
709 | ||
710 | e = usymtab_supGlobalEntryReturn (e); | |
711 | ||
712 | context_enterFunction (e); | |
713 | enterFunctionParams (params); | |
714 | saveParamList = uentryList_undefined; | |
715 | resetStorageClass (); | |
716 | } | |
717 | ||
718 | void declareFunction (idDecl tid) /*@globals undef saveFunction; @*/ | |
719 | { | |
720 | uentry ue; | |
721 | ||
722 | DPRINTF (("Declare function: %s", idDecl_unparse (tid))); | |
723 | ||
724 | if (ProcessingParams) | |
725 | { | |
726 | ue = globalDeclareOldStyleFunction (tid); | |
727 | saveFunction = ue; | |
728 | } | |
729 | else | |
730 | { | |
731 | saveFunction = uentry_undefined; | |
732 | ||
733 | if (context_inRealFunction ()) | |
734 | { | |
735 | ue = uentry_makeVariableLoc (idDecl_observeId (tid), ctype_unknown); | |
736 | ||
737 | llparseerror (message ("Function declared inside function: %q", | |
738 | idDecl_unparse (tid))); | |
739 | ||
740 | context_quietExitFunction (); | |
741 | ue = usymtab_supEntryReturn (ue); | |
742 | } | |
743 | else | |
744 | { | |
745 | if (context_inInnerScope ()) | |
746 | { | |
747 | llparseerror (message ("Declaration in inner context: %q", | |
748 | idDecl_unparse (tid))); | |
749 | ||
750 | sRef_setGlobalScope (); | |
751 | ue = uentry_makeVariableLoc (idDecl_observeId (tid), | |
752 | ctype_unknown); | |
753 | ue = usymtab_supGlobalEntryReturn (ue); | |
754 | sRef_clearGlobalScope (); | |
755 | } | |
756 | else | |
757 | { | |
758 | ue = globalDeclareFunction (tid); | |
759 | } | |
760 | } | |
761 | ||
762 | resetGlobals (); | |
763 | } | |
764 | ||
765 | resetStorageClass (); | |
766 | idDecl_free (tid); | |
767 | } | |
768 | ||
769 | void declareStaticFunction (idDecl tid) /*@globals undef saveFunction; @*/ | |
770 | { | |
771 | uentry ue; | |
772 | ||
773 | DPRINTF (("Declare static funciton: %s", idDecl_unparse (tid))); | |
774 | ||
775 | if (ProcessingParams) | |
776 | { | |
777 | ue = globalDeclareOldStyleFunction (tid); | |
778 | saveFunction = ue; | |
779 | } | |
780 | else | |
781 | { | |
782 | saveFunction = uentry_undefined; | |
783 | ||
784 | if (context_inRealFunction ()) | |
785 | { | |
786 | ue = uentry_makeVariableLoc (idDecl_observeId (tid), ctype_unknown); | |
787 | ||
788 | llparseerror (message ("Function declared inside function: %q", | |
789 | idDecl_unparse (tid))); | |
790 | ||
791 | context_quietExitFunction (); | |
792 | ue = usymtab_supEntryReturn (ue); | |
793 | } | |
794 | else | |
795 | { | |
796 | if (context_inInnerScope ()) | |
797 | { | |
798 | llparseerror (message ("Declaration in inner context: %q", | |
799 | idDecl_unparse (tid))); | |
800 | ||
801 | sRef_setGlobalScope (); | |
802 | ue = uentry_makeVariableLoc (idDecl_observeId (tid), | |
803 | ctype_unknown); | |
804 | ue = usymtab_supGlobalEntryReturn (ue); | |
805 | sRef_clearGlobalScope (); | |
806 | } | |
807 | else | |
808 | { | |
809 | ctype deftype = idDecl_getCtype (tid); | |
810 | ctype rettype; | |
811 | ||
812 | if (ctype_isFunction (deftype)) | |
813 | { | |
814 | rettype = ctype_returnValue (deftype); | |
815 | } | |
816 | else | |
817 | { | |
818 | rettype = ctype_unknown; | |
819 | } | |
820 | ||
821 | /* | |
822 | ** check has been moved here... | |
823 | */ | |
824 | ||
825 | if (ctype_isFunction (idDecl_getCtype (tid))) | |
826 | { | |
827 | ue = uentry_makeIdFunction (tid); | |
828 | reflectSpecialCode (ue); | |
829 | reflectArgsUsed (ue); | |
830 | } | |
831 | else | |
832 | { | |
833 | llparseerror (message ("Inconsistent function declaration: %q", | |
834 | idDecl_unparse (tid))); | |
835 | ||
836 | tid = idDecl_replaceCtype | |
837 | (tid, ctype_makeFunction (ctype_unknown, uentryList_undefined)); | |
838 | ue = uentry_makeIdFunction (tid); | |
839 | } | |
840 | ||
841 | reflectStorageClass (ue); | |
842 | uentry_setStatic (ue); | |
843 | ||
844 | uentry_checkParams (ue); | |
845 | reflectModGlobs (ue); | |
846 | ||
847 | DPRINTF (("Sub global entry: %s", uentry_unparse (ue))); | |
848 | ue = usymtab_supGlobalEntryReturn (ue); | |
849 | ||
850 | context_enterFunction (ue); | |
851 | enterFunctionParams (uentry_getParams (ue)); | |
852 | resetStorageClass (); | |
853 | } | |
854 | } | |
855 | ||
856 | resetGlobals (); | |
857 | } | |
858 | ||
859 | resetStorageClass (); | |
860 | idDecl_free (tid); | |
861 | } | |
862 | ||
863 | void | |
864 | checkTypeDecl (uentry e, ctype rep) | |
865 | { | |
866 | cstring n = uentry_getName (e); | |
867 | ||
868 | DPRINTF (("Check type decl: %s", n)); | |
869 | ||
870 | if (cstring_equal (context_getBoolName (), n)) | |
871 | { | |
872 | ctype rrep = ctype_realType (rep); | |
873 | ||
874 | /* | |
875 | ** for abstract enum types, we need to fix the enum members: | |
876 | ** they should have the abstract type, not the rep type. | |
877 | */ | |
878 | ||
879 | if (ctype_isEnum (ctype_realType (rrep))) | |
880 | { | |
881 | enumNameList el = ctype_elist (rrep); | |
882 | ||
883 | enumNameList_elements (el, ye) | |
884 | { | |
885 | if (usymtab_existsGlob (ye)) | |
886 | { | |
887 | uentry ue = usymtab_lookupSafe (ye); | |
888 | uentry_setType (ue, ctype_bool); | |
889 | } | |
890 | ||
891 | if (cstring_equal (context_getTrueName (), ye) | |
892 | || cstring_equal (context_getFalseName (), ye)) | |
893 | { | |
894 | ; | |
895 | } | |
896 | else | |
897 | { | |
898 | vgenhinterror | |
899 | (FLG_SYNTAX, | |
900 | message ("Member of boolean enumerated type definition " | |
901 | "does not match name set to represent TRUE " | |
902 | "or FALSE: %s", | |
903 | ye), | |
904 | message ("Use -boolfalse and -booltrue to set the " | |
905 | "name of false and true boolean values."), | |
906 | uentry_whereDefined (e)); | |
907 | } | |
908 | } end_enumNameList_elements; | |
909 | } | |
910 | } | |
911 | ||
912 | if (usymtab_exists (n)) | |
913 | { | |
914 | usymId llm = usymtab_getId (n); | |
915 | uentry le = usymtab_getTypeEntry (llm); | |
916 | ||
917 | uentry_setDeclared (e, g_currentloc); | |
918 | uentry_setSref (e, sRef_makeGlobal (llm, uentry_getType (le))); | |
919 | ||
920 | DPRINTF (("Here we are: %s / %s", | |
921 | n, context_getBoolName ())); | |
922 | ||
923 | if (uentry_isAbstractDatatype (le)) | |
924 | { | |
925 | ctype rrep = ctype_realType (rep); | |
926 | ||
927 | /* | |
928 | ** for abstract enum types, we need to fix the enum members: | |
929 | ** they should have the abstract type, not the rep type. | |
930 | */ | |
931 | ||
932 | if (ctype_isEnum (ctype_realType (rrep))) | |
933 | { | |
934 | ctype at = uentry_getAbstractType (le); | |
935 | enumNameList el = ctype_elist (rrep); | |
936 | ||
937 | enumNameList_elements (el, ye) | |
938 | { | |
939 | if (usymtab_existsGlob (ye)) | |
940 | { | |
941 | uentry ue = usymtab_lookupSafe (ye); | |
942 | ||
943 | llassert (uentry_isEitherConstant (ue)); | |
944 | llassertprint (ctype_match (uentry_getType (ue), rrep), | |
945 | ("Bad enum: %s / %s", | |
946 | uentry_unparse (ue), | |
947 | ctype_unparse (rrep))); | |
948 | ||
949 | uentry_setType (ue, at); | |
950 | } | |
951 | } end_enumNameList_elements; | |
952 | } | |
953 | ||
954 | if (uentry_isMutableDatatype (le)) | |
955 | { | |
956 | /* maybe more complicated if abstract and immutable ? */ | |
957 | ||
958 | if (!ctype_isRealPointer (rep) && !ctype_isRealAbstract (rep)) | |
959 | { | |
960 | voptgenerror | |
961 | (FLG_MUTREP, | |
962 | message ("Mutable abstract type %s declared without pointer " | |
963 | "indirection: %s (violates assignment semantics)", | |
964 | n, ctype_unparse (rep)), | |
965 | uentry_whereDefined (e)); | |
966 | ||
967 | uentry_setMutable (e); | |
968 | } | |
969 | } | |
970 | } | |
971 | } | |
972 | else | |
973 | { | |
974 | fileloc fl = uentry_whereDeclared (e); | |
975 | ||
976 | if (context_getFlag (FLG_LIKELYBOOL) | |
977 | && !context_getFlag (FLG_BOOLINT)) | |
978 | { | |
979 | if ((cstring_equalLit (n, "BOOL") | |
980 | || cstring_equalLit (n, "Bool") | |
981 | || cstring_equalLit (n, "bool") | |
982 | || cstring_equalLit (n, "boolean") | |
983 | || cstring_equalLit (n, "Boolean") | |
984 | || cstring_equalLit (n, "BOOLEAN")) | |
985 | && !(cstring_equal (n, context_getBoolName ()))) | |
986 | { | |
987 | if (context_setBoolName ()) { | |
988 | voptgenerror | |
989 | (FLG_LIKELYBOOL, | |
990 | message ("Type %s is probably meant as a boolean type, but does " | |
991 | "not match the boolean type name \"%s\".", | |
992 | n, | |
993 | context_getBoolName ()), | |
994 | fl); | |
995 | } else | |
996 | voptgenerror | |
997 | (FLG_LIKELYBOOL, | |
998 | message ("Type %s is probably meant as a boolean type, " | |
999 | "but the boolean type name is not set. " | |
1000 | "Use -booltype %s to set it.", | |
1001 | n, | |
1002 | n), | |
1003 | fl); | |
1004 | } | |
1005 | } | |
1006 | ||
1007 | if (!uentry_isStatic (e) | |
1008 | && !ctype_isFunction (uentry_getType (e)) | |
1009 | && !fileloc_isLib (fl) | |
1010 | && !fileloc_isImport (fl) | |
1011 | && fileloc_isHeader (fl)) | |
1012 | { | |
1013 | voptgenerror (FLG_EXPORTTYPE, | |
1014 | message ("Type exported, but not specified: %s\n", n), | |
1015 | fl); | |
1016 | } | |
1017 | } | |
1018 | ||
1019 | cstring_free (n); | |
1020 | } | |
1021 | ||
1022 | uentryList | |
1023 | fixUentryList (idDeclList tl, qtype q) | |
1024 | { | |
1025 | uentryList f = uentryList_new (); | |
1026 | ||
1027 | idDeclList_elements (tl, i) | |
1028 | { | |
1029 | if (idDecl_isDefined (i)) | |
1030 | { | |
1031 | uentry ue; | |
1032 | uentry old; | |
1033 | ctype rt; | |
1034 | ||
1035 | (void) idDecl_fixBase (i, q); | |
1036 | ||
1037 | /* | |
1038 | ** implicit annotations | |
1039 | */ | |
1040 | ||
1041 | (void) fixStructDecl (i); | |
1042 | ||
1043 | ue = uentry_makeIdVariable (i); | |
1044 | rt = ctype_realType (uentry_getType (ue)); | |
1045 | ||
1046 | /* | |
1047 | ** where is this here??? | |
1048 | ||
1049 | if (ctype_isArray (rt) || ctype_isSU (rt)) | |
1050 | { | |
1051 | sRef_setAllocated (uentry_getSref (ue), uentry_whereDefined (ue)); | |
1052 | } | |
1053 | ||
1054 | ** | |
1055 | */ | |
1056 | ||
1057 | if (uentry_isValid (old = uentryList_lookupField (f, uentry_rawName (ue)))) | |
1058 | { | |
1059 | if (optgenerror (FLG_SYNTAX, | |
1060 | message ("Field name reused: %s", uentry_rawName (ue)), | |
1061 | uentry_whereDefined (ue))) | |
1062 | { | |
1063 | llgenmsg (message ("Previous use of %s", uentry_rawName (ue)), | |
1064 | uentry_whereDefined (old)); | |
1065 | } | |
1066 | } | |
1067 | ||
1068 | f = uentryList_add (f, ue); | |
1069 | } | |
1070 | } end_idDeclList_elements; | |
1071 | ||
1072 | idDeclList_free (tl); | |
1073 | return (f); | |
1074 | } | |
1075 | ||
1076 | /* | |
1077 | ** This is a hack to support unnamed struct/union fields as done by | |
1078 | ** Microsoft VC++. It is not supported by the ANSI standard. | |
1079 | ** | |
1080 | ** The inner fields are added to the outer structure. This is meaningful | |
1081 | ** for nesting structs inside unions, but lclint does no related | |
1082 | ** checking. | |
1083 | */ | |
1084 | ||
1085 | uentryList | |
1086 | fixUnnamedDecl (qtype q) | |
1087 | { | |
1088 | ctype ct = ctype_realType (qtype_getType (q)); | |
1089 | ||
1090 | if (ctype_isStruct (ct) || ctype_isUnion (ct)) | |
1091 | { | |
1092 | uentryList res = ctype_getFields (ct); | |
1093 | ||
1094 | return (uentryList_copy (res)); | |
1095 | } | |
1096 | else | |
1097 | { | |
1098 | BADBRANCHCONT; | |
1099 | } | |
1100 | ||
1101 | return uentryList_undefined; | |
1102 | } | |
1103 | ||
1104 | void setStorageClass (storageClassCode sc) | |
1105 | { | |
1106 | storageClass = sc; | |
1107 | } | |
1108 | ||
1109 | void | |
1110 | setProcessingIterVars (uentry iter) | |
1111 | { | |
1112 | ProcessingIterVars = TRUE; | |
1113 | currentIter = iter; | |
1114 | saveIterParamNo = 0; | |
1115 | } | |
1116 | ||
1117 | void | |
1118 | setProcessingGlobalsList () | |
1119 | { | |
1120 | ProcessingGlobals = TRUE; | |
1121 | ||
1122 | llassert (globSet_isUndefined (currentGlobals)); | |
1123 | currentGlobals = globSet_undefined; | |
1124 | ||
1125 | llassert (sRefSet_isUndefined (fcnModifies)); | |
1126 | fcnModifies = sRefSet_undefined; | |
1127 | ||
1128 | /* | |
1129 | ** No, special clauses might have been processed first! | |
1130 | llassert (specialClauses_isUndefined (specClauses)); | |
1131 | specClauses = specialClauses_undefined; | |
1132 | */ | |
1133 | ||
1134 | fcnNoGlobals = FALSE; | |
1135 | } | |
1136 | ||
1137 | static bool ProcessingGlobMods = FALSE; | |
1138 | ||
1139 | void | |
1140 | setProcessingGlobMods () | |
1141 | { | |
1142 | ProcessingGlobMods = TRUE; | |
1143 | } | |
1144 | ||
1145 | void | |
1146 | clearProcessingGlobMods () | |
1147 | { | |
1148 | ProcessingGlobMods = FALSE; | |
1149 | } | |
1150 | ||
1151 | bool | |
1152 | isProcessingGlobMods () | |
1153 | { | |
1154 | return (ProcessingGlobMods); | |
1155 | } | |
1156 | ||
1157 | static void resetGlobals (void) | |
1158 | { | |
1159 | ProcessingGlobals = FALSE; | |
1160 | currentGlobals = globSet_undefined; | |
1161 | llassert (sRefSet_isUndefined (fcnModifies)); | |
1162 | fcnModifies = sRefSet_undefined; | |
1163 | fcnNoGlobals = FALSE; | |
1164 | } | |
1165 | ||
1166 | void | |
1167 | unsetProcessingGlobals () | |
1168 | { | |
1169 | ProcessingGlobals = FALSE; | |
1170 | } | |
1171 | ||
1172 | void | |
1173 | setProcessingVars (/*@only@*/ qtype q) | |
1174 | { | |
1175 | ProcessingVars = TRUE; | |
1176 | qtype_free (processingType); | |
1177 | processingType = q; | |
1178 | } | |
1179 | ||
1180 | static void | |
1181 | setGenericParamList (/*@dependent@*/ uentryList pm) | |
1182 | { | |
1183 | ProcessingParams = TRUE; | |
1184 | saveParamList = pm; | |
1185 | } | |
1186 | ||
1187 | void | |
1188 | setProcessingTypedef (/*@only@*/ qtype q) | |
1189 | { | |
1190 | ProcessingTypedef = TRUE; | |
1191 | ||
1192 | qtype_free (processingType); | |
1193 | processingType = q; | |
1194 | } | |
1195 | ||
1196 | void | |
1197 | unsetProcessingVars () | |
1198 | { | |
1199 | resetStorageClass (); | |
1200 | ProcessingVars = FALSE; | |
1201 | } | |
1202 | ||
1203 | void | |
1204 | doneParams () | |
1205 | { | |
1206 | if (ProcessingParams) | |
1207 | { | |
1208 | if (uentry_isInvalid (saveFunction)) | |
1209 | { | |
1210 | llbuglit ("unsetProcessingVars: no saved function\n"); | |
1211 | ||
1212 | if (sRefSet_isDefined (fcnModifies)) { | |
1213 | sRefSet_free (fcnModifies); | |
1214 | fcnModifies = sRefSet_undefined; | |
1215 | } | |
1216 | } | |
1217 | else | |
1218 | { | |
1219 | ctype ct = ctype_returnValue (uentry_getType (saveFunction)); | |
1220 | uentryList params = uentryList_copy (saveParamList); | |
1221 | ctype ct2 = ctype_makeFunction (ct, params); | |
1222 | ||
1223 | uentry_setType (saveFunction, ct2); | |
1224 | ProcessingParams = FALSE; | |
1225 | ||
1226 | reflectModGlobs (saveFunction); | |
1227 | oldStyleDeclareFunction (saveFunction); | |
1228 | saveFunction = uentry_undefined; | |
1229 | resetGlobals (); | |
1230 | } | |
1231 | } | |
1232 | else | |
1233 | { | |
1234 | /* | |
1235 | ** If the paramlist used a type name, we could be here. | |
1236 | */ | |
1237 | ||
1238 | llfatalerror (message ("%q: Old-style function parameter list uses a " | |
1239 | "type name.", fileloc_unparse (g_currentloc))); | |
1240 | } | |
1241 | } | |
1242 | ||
1243 | void | |
1244 | checkDoneParams () | |
1245 | { | |
1246 | if (uentry_isValid (saveFunction)) | |
1247 | { | |
1248 | /* | |
1249 | ** old style declaration | |
1250 | */ | |
1251 | ||
1252 | ctype ct = ctype_returnValue (uentry_getType (saveFunction)); | |
1253 | ctype ct2; | |
1254 | ||
1255 | uentryList_elements (saveParamList, current) | |
1256 | { | |
1257 | uentry_setType (current, ctype_int); /* all params are ints */ | |
1258 | } end_uentryList_elements; | |
1259 | ||
1260 | ct2 = ctype_makeParamsFunction (ct, uentryList_copy (saveParamList)); | |
1261 | ||
1262 | uentry_setType (saveFunction, ct2); | |
1263 | ProcessingParams = FALSE; | |
1264 | ||
1265 | oldStyleDeclareFunction (saveFunction); | |
1266 | saveFunction = uentry_undefined; | |
1267 | } | |
1268 | } | |
1269 | ||
1270 | void | |
1271 | unsetProcessingTypedef () | |
1272 | { | |
1273 | ProcessingTypedef = FALSE; | |
1274 | } | |
1275 | ||
1276 | void checkConstant (qtype t, idDecl id) | |
1277 | { | |
1278 | uentry e; | |
1279 | ||
1280 | id = idDecl_fixBase (id, t); | |
1281 | e = uentry_makeIdConstant (id); | |
1282 | ||
1283 | reflectStorageClass (e); | |
1284 | resetStorageClass (); | |
1285 | ||
1286 | usymtab_supGlobalEntry (e); | |
1287 | } | |
1288 | ||
1289 | void checkValueConstant (qtype t, idDecl id, exprNode e) | |
1290 | { | |
1291 | uentry ue; | |
1292 | ||
1293 | id = idDecl_fixBase (id, t); | |
1294 | ue = uentry_makeIdConstant (id); | |
1295 | reflectStorageClass (ue); | |
1296 | resetStorageClass (); | |
1297 | ||
1298 | if (exprNode_isDefined (e)) | |
1299 | { | |
1300 | if (!exprNode_matchType (uentry_getType (ue), e)) | |
1301 | { | |
1302 | (void) gentypeerror | |
1303 | (exprNode_getType (e), e, | |
1304 | uentry_getType (ue), exprNode_undefined, | |
1305 | message ("Constant %q initialized to type %t, expects %t: %s", | |
1306 | uentry_getName (ue), | |
1307 | exprNode_getType (e), | |
1308 | uentry_getType (ue), | |
1309 | exprNode_unparse (e)), | |
1310 | exprNode_loc (e)); | |
1311 | } | |
1312 | else | |
1313 | { | |
1314 | if (exprNode_hasValue (e)) | |
1315 | { | |
1316 | uentry_mergeConstantValue (ue, multiVal_copy (exprNode_getValue (e))); | |
1317 | } | |
1318 | } | |
1319 | } | |
1320 | ||
1321 | usymtab_supGlobalEntry (ue); | |
1322 | } | |
1323 | ||
1324 | ||
1325 | void processNamedDecl (idDecl t) | |
1326 | { | |
1327 | if (qtype_isUndefined (processingType)) | |
1328 | { | |
1329 | llparseerror (message ("No type before declaration name: %q", idDecl_unparse (t))); | |
1330 | ||
1331 | processingType = qtype_create (ctype_unknown); | |
1332 | } | |
1333 | ||
1334 | t = idDecl_fixBase (t, processingType); | |
1335 | ||
1336 | DPRINTF (("Declare: %s", idDecl_unparse (t))); | |
1337 | ||
1338 | if (ProcessingGlobals) | |
1339 | { | |
1340 | cstring id = idDecl_getName (t); | |
1341 | uentry ue = usymtab_lookupSafe (id); | |
1342 | ||
1343 | if (!uentry_isValid (ue)) | |
1344 | { | |
1345 | llerror (FLG_UNRECOG, | |
1346 | message ("Variable used in globals list is undeclared: %s", id)); | |
1347 | } | |
1348 | else | |
1349 | { | |
1350 | if (!ctype_match (uentry_getType (ue), idDecl_getCtype (t))) | |
1351 | { | |
1352 | voptgenerror | |
1353 | (FLG_INCONDEFS, | |
1354 | message ("Variable %s used in globals list declared %s, " | |
1355 | "but listed as %s", | |
1356 | id, ctype_unparse (uentry_getType (ue)), | |
1357 | ctype_unparse (idDecl_getCtype (t))), | |
1358 | g_currentloc); | |
1359 | } | |
1360 | else | |
1361 | { | |
1362 | sRef sr = sRef_copy (uentry_getSref (ue)); | |
1363 | ||
1364 | reflectGlobalQualifiers (sr, idDecl_getQuals (t)); | |
1365 | ||
1366 | currentGlobals = globSet_insert (currentGlobals, sr); | |
1367 | } | |
1368 | } | |
1369 | } | |
1370 | else if (ProcessingVars) | |
1371 | { | |
1372 | uentry e; | |
1373 | ctype ct; | |
1374 | ||
1375 | ct = ctype_realType (idDecl_getCtype (t)); | |
1376 | ||
1377 | if (ProcessingParams) | |
1378 | { | |
1379 | cstring id = idDecl_getName (t); | |
1380 | int paramno = uentryList_lookupRealName (saveParamList, id); | |
1381 | ||
1382 | if (paramno >= 0) | |
1383 | { | |
1384 | uentry cparam = uentryList_getN (saveParamList, paramno); | |
1385 | ||
1386 | uentry_setType (cparam, idDecl_getCtype (t)); | |
1387 | uentry_reflectQualifiers (cparam, idDecl_getQuals (t)); | |
1388 | uentry_setDeclaredOnly (cparam, context_getSaveLocation ()); | |
1389 | } | |
1390 | else | |
1391 | { | |
1392 | llfatalerrorLoc | |
1393 | (message ("Old style declaration uses unlisted parameter: %s", | |
1394 | id)); | |
1395 | } | |
1396 | } | |
1397 | else | |
1398 | { | |
1399 | fileloc loc; | |
1400 | ||
1401 | if (context_inIterDef ()) | |
1402 | { | |
1403 | cstring pname = makeParam (idDecl_observeId (t)); | |
1404 | uentry p = usymtab_lookupSafe (pname); | |
1405 | ||
1406 | cstring_free (pname); | |
1407 | ||
1408 | if (uentry_isYield (p)) | |
1409 | { | |
1410 | e = uentry_makeParam (t, sRef_getParam (uentry_getSref (p))); | |
1411 | ||
1412 | uentry_checkYieldParam (p, e); | |
1413 | ||
1414 | usymtab_supEntrySref (e); | |
1415 | return; | |
1416 | } | |
1417 | } | |
1418 | ||
1419 | if ((hasSpecialCode () || argsUsed) | |
1420 | && ctype_isFunction (idDecl_getCtype (t))) | |
1421 | { | |
1422 | e = uentry_makeIdFunction (t); | |
1423 | reflectSpecialCode (e); | |
1424 | reflectArgsUsed (e); | |
1425 | } | |
1426 | else | |
1427 | { | |
1428 | e = uentry_makeIdVariable (t); | |
1429 | } | |
1430 | ||
1431 | loc = uentry_whereDeclared (e); | |
1432 | ||
1433 | /* | |
1434 | if (context_inGlobalScope ()) | |
1435 | { | |
1436 | uentry_checkParams was here! | |
1437 | } | |
1438 | */ | |
1439 | ||
1440 | if (ctype_isFunction (uentry_getType (e))) | |
1441 | { | |
1442 | reflectModGlobs (e); | |
1443 | } | |
1444 | else | |
1445 | { | |
1446 | llassert (!globSet_isDefined (currentGlobals) | |
1447 | && !sRefSet_isDefined (fcnModifies)); | |
1448 | } | |
1449 | ||
1450 | e = usymtab_supEntrySrefReturn (e); | |
1451 | ||
1452 | if (uentry_isExtern (e) && !context_inGlobalScope ()) | |
1453 | { | |
1454 | voptgenerror | |
1455 | (FLG_NESTEDEXTERN, | |
1456 | message ("Declaration using extern inside function scope: %q", | |
1457 | uentry_unparse (e)), | |
1458 | g_currentloc); | |
1459 | ||
1460 | uentry_setDefined (e, fileloc_getExternal ()); | |
1461 | sRef_setDefined (uentry_getSref (e), fileloc_getExternal ()); | |
1462 | } | |
1463 | ||
1464 | if (uentry_isFunction (e)) | |
1465 | { | |
1466 | uentry_checkParams (e); | |
1467 | checkParamNames (e); | |
1468 | } | |
1469 | ||
1470 | if (uentry_isVar (e) | |
1471 | && uentry_isCheckedUnknown (e)) | |
1472 | { | |
1473 | sRef sr = uentry_getSref (e); | |
1474 | ||
1475 | if (sRef_isLocalVar (sr)) | |
1476 | { | |
1477 | if (context_getFlag (FLG_IMPCHECKMODINTERNALS)) | |
1478 | { | |
1479 | uentry_setCheckMod (e); | |
1480 | } | |
1481 | else | |
1482 | { | |
1483 | uentry_setUnchecked (e); | |
1484 | } | |
1485 | } | |
1486 | else if (sRef_isFileStatic (sr)) | |
1487 | { | |
1488 | if (context_getFlag (FLG_IMPCHECKEDSTRICTSTATICS)) | |
1489 | { | |
1490 | uentry_setCheckedStrict (e); | |
1491 | } | |
1492 | else if (context_getFlag (FLG_IMPCHECKEDSTATICS)) | |
1493 | { | |
1494 | uentry_setChecked (e); | |
1495 | } | |
1496 | else if (context_getFlag (FLG_IMPCHECKMODSTATICS)) | |
1497 | { | |
1498 | uentry_setCheckMod (e); | |
1499 | } | |
1500 | else | |
1501 | { | |
1502 | ; | |
1503 | } | |
1504 | } | |
1505 | else /* real global */ | |
1506 | { | |
1507 | llassert (sRef_isRealGlobal (sr)); | |
1508 | ||
1509 | if (context_getFlag (FLG_IMPCHECKEDSTRICTGLOBALS)) | |
1510 | { | |
1511 | uentry_setCheckedStrict (e); | |
1512 | } | |
1513 | else if (context_getFlag (FLG_IMPCHECKEDGLOBALS)) | |
1514 | { | |
1515 | uentry_setChecked (e); | |
1516 | } | |
1517 | else if (context_getFlag (FLG_IMPCHECKMODGLOBALS)) | |
1518 | { | |
1519 | uentry_setCheckMod (e); | |
1520 | } | |
1521 | else | |
1522 | { | |
1523 | ; | |
1524 | } | |
1525 | } | |
1526 | } | |
1527 | } | |
1528 | } | |
1529 | else if (ProcessingTypedef) | |
1530 | { | |
1531 | ctype ct = idDecl_getCtype (t); | |
1532 | uentry e; | |
1533 | ||
1534 | DPRINTF (("Processing typedef: %s", ctype_unparse (ct))); | |
1535 | ||
1536 | e = uentry_makeIdDatatype (t); | |
1537 | ||
1538 | if (cstring_equal (idDecl_getName (t), context_getBoolName ())) { | |
1539 | ctype rt = ctype_realType (ct); | |
1540 | ||
1541 | if (ctype_isEnum (rt)) { | |
1542 | ; | |
1543 | } else { | |
1544 | if (!(ctype_isInt (rt) | |
1545 | || ctype_isUnknown (rt) | |
1546 | || ctype_isChar (rt))) { | |
1547 | (void) llgenerror | |
1548 | (FLG_BOOLTYPE, | |
1549 | message ("Boolean type %s defined using non-standard type %s (integral, char or enum type expected)", | |
1550 | context_getBoolName (), | |
1551 | ctype_unparse (ct)), | |
1552 | uentry_whereLast (e)); | |
1553 | } | |
1554 | ||
1555 | ct = ctype_bool; | |
1556 | uentry_setType (e, ct); | |
1557 | } | |
1558 | } | |
1559 | ||
1560 | reflectStorageClass (e); | |
1561 | checkTypeDecl (e, ct); | |
1562 | ||
1563 | e = usymtab_supReturnTypeEntry (e); | |
1564 | ||
1565 | if (uentry_isMaybeAbstract (e)) | |
1566 | { | |
1567 | if (context_getFlag (FLG_IMPABSTRACT)) | |
1568 | { | |
1569 | uentry_setAbstract (e); | |
1570 | } | |
1571 | else | |
1572 | { | |
1573 | uentry_setConcrete (e); | |
1574 | } | |
1575 | } | |
1576 | } | |
1577 | else | |
1578 | { | |
1579 | llparseerror (message ("Suspect missing struct or union keyword: %q", | |
1580 | idDecl_unparse (t))); | |
1581 | } | |
1582 | ||
1583 | } | |
1584 | ||
1585 | /* | |
1586 | ** moved from grammar | |
1587 | */ | |
1588 | ||
1589 | static idDecl fixStructDecl (/*@returned@*/ idDecl d) | |
1590 | { | |
1591 | if (ctype_isVisiblySharable (idDecl_getCtype (d)) | |
1592 | && context_getFlag (FLG_STRUCTIMPONLY)) | |
1593 | { | |
1594 | if (!qualList_hasAliasQualifier (idDecl_getQuals (d))) | |
1595 | { | |
1596 | if (qualList_hasExposureQualifier (idDecl_getQuals (d))) | |
1597 | { | |
1598 | idDecl_addQual (d, qual_createDependent ()); | |
1599 | } | |
1600 | else | |
1601 | { | |
1602 | idDecl_addQual (d, qual_createImpOnly ()); | |
1603 | } | |
1604 | } | |
1605 | } | |
1606 | ||
1607 | return d; | |
1608 | } | |
1609 | ||
1610 | ctype | |
1611 | declareUnnamedStruct (/*@only@*/ uentryList f) | |
1612 | { | |
1613 | if (context_maybeSet (FLG_NUMSTRUCTFIELDS)) | |
1614 | { | |
1615 | int num = uentryList_size (f); | |
1616 | int max = context_getValue (FLG_NUMSTRUCTFIELDS); | |
1617 | ||
1618 | if (num > max) | |
1619 | { | |
1620 | voptgenerror | |
1621 | (FLG_NUMSTRUCTFIELDS, | |
1622 | message ("Structure declared with %d fields " | |
1623 | "(limit is set to %d)", | |
1624 | num, max), | |
1625 | g_currentloc); | |
1626 | } | |
1627 | } | |
1628 | ||
1629 | return (ctype_createUnnamedStruct (f)); | |
1630 | } | |
1631 | ||
1632 | ctype | |
1633 | declareUnnamedUnion (/*@only@*/ uentryList f) | |
1634 | { | |
1635 | if (context_maybeSet (FLG_NUMSTRUCTFIELDS)) | |
1636 | { | |
1637 | int num = uentryList_size (f); | |
1638 | int max = context_getValue (FLG_NUMSTRUCTFIELDS); | |
1639 | ||
1640 | if (num > max) | |
1641 | { | |
1642 | voptgenerror | |
1643 | (FLG_NUMSTRUCTFIELDS, | |
1644 | message ("Union declared with %d fields " | |
1645 | "(limit is set to %d)", | |
1646 | num, max), | |
1647 | g_currentloc); | |
1648 | } | |
1649 | } | |
1650 | ||
1651 | return (ctype_createUnnamedUnion (f)); | |
1652 | } | |
1653 | ||
1654 | ctype declareStruct (cstring id, /*@only@*/ uentryList f) | |
1655 | { | |
1656 | ctype ct; | |
1657 | uentry ue; | |
1658 | int num = uentryList_size (f); | |
1659 | ||
1660 | ct = ctype_createStruct (cstring_copy (id), f); | |
1661 | ue = uentry_makeStructTagLoc (id, ct); | |
1662 | ||
1663 | if (context_maybeSet (FLG_NUMSTRUCTFIELDS)) | |
1664 | { | |
1665 | int max = context_getValue (FLG_NUMSTRUCTFIELDS); | |
1666 | ||
1667 | if (num > max) | |
1668 | { | |
1669 | voptgenerror | |
1670 | (FLG_NUMSTRUCTFIELDS, | |
1671 | message ("Structure %q declared with %d fields " | |
1672 | "(limit is set to %d)", | |
1673 | uentry_getName (ue), num, max), | |
1674 | uentry_whereLast (ue)); | |
1675 | } | |
1676 | } | |
1677 | ||
1678 | return (usymtab_supTypeEntry (ue)); | |
1679 | } | |
1680 | ||
1681 | ctype declareUnion (cstring id, uentryList f) | |
1682 | { | |
1683 | ctype ct; | |
1684 | uentry ue; | |
1685 | int num = uentryList_size (f); | |
1686 | ||
1687 | ct = ctype_createUnion (cstring_copy (id), f); | |
1688 | ue = uentry_makeUnionTagLoc (id, ct); | |
1689 | ||
1690 | if (context_maybeSet (FLG_NUMSTRUCTFIELDS)) | |
1691 | { | |
1692 | int max = context_getValue (FLG_NUMSTRUCTFIELDS); | |
1693 | ||
1694 | if (num > max) | |
1695 | { | |
1696 | voptgenerror | |
1697 | (FLG_NUMSTRUCTFIELDS, | |
1698 | message ("Union %q declared with %d fields " | |
1699 | "(limit is set to %d)", | |
1700 | uentry_getName (ue), num, max), | |
1701 | uentry_whereLast (ue)); | |
1702 | } | |
1703 | } | |
1704 | ||
1705 | return (usymtab_supTypeEntry (ue)); | |
1706 | } | |
1707 | ||
1708 | ctype handleStruct (/*@only@*/ cstring id) | |
1709 | { | |
1710 | if (usymtab_existsStructTag (id)) | |
1711 | { | |
1712 | ctype ct = uentry_getAbstractType (usymtab_lookupStructTag (id)); | |
1713 | ||
1714 | cstring_free (id); | |
1715 | return ct; | |
1716 | } | |
1717 | else | |
1718 | { | |
1719 | return (ctype_createForwardStruct (id)); | |
1720 | } | |
1721 | } | |
1722 | ||
1723 | ctype handleUnion (/*@only@*/ cstring id) | |
1724 | { | |
1725 | if (usymtab_existsUnionTag (id)) | |
1726 | { | |
1727 | ctype ret = uentry_getAbstractType (usymtab_lookupUnionTag (id)); | |
1728 | cstring_free (id); | |
1729 | return (ret); | |
1730 | } | |
1731 | else | |
1732 | { | |
1733 | return (ctype_createForwardUnion (id)); | |
1734 | } | |
1735 | } | |
1736 | ||
1737 | ctype | |
1738 | handleEnum (cstring id) | |
1739 | { | |
1740 | if (usymtab_existsEnumTag (id)) | |
1741 | { | |
1742 | ctype ret = uentry_getAbstractType (usymtab_lookupEnumTag (id)); | |
1743 | cstring_free (id); | |
1744 | return ret; | |
1745 | } | |
1746 | else | |
1747 | { | |
1748 | return (declareEnum (id, enumNameList_new ())); | |
1749 | } | |
1750 | } | |
1751 | ||
1752 | bool processingIterVars (void) | |
1753 | { | |
1754 | return ProcessingIterVars; | |
1755 | } | |
1756 | ||
1757 | uentry getCurrentIter (void) | |
1758 | { | |
1759 | return currentIter; | |
1760 | } | |
1761 | ||
1762 | static bool flipOldStyle = FALSE; | |
1763 | static bool flipNewStyle = TRUE; | |
1764 | ||
1765 | void setFlipOldStyle () { flipOldStyle = TRUE; } | |
1766 | bool isFlipOldStyle () { return flipOldStyle; } | |
1767 | bool isNewStyle () { return flipNewStyle; } | |
1768 | void setNewStyle () { flipNewStyle = TRUE; } | |
1769 | ||
1770 | /*@dependent@*/ uentryList handleParamIdList (/*@dependent@*/ uentryList params) | |
1771 | { | |
1772 | int paramno = 0; | |
1773 | ||
1774 | /* | |
1775 | ** this is a really YUCKY hack to handle old style | |
1776 | ** declarations. | |
1777 | */ | |
1778 | ||
1779 | voptgenerror (FLG_OLDSTYLE, | |
1780 | cstring_makeLiteral ("Old style function declaration"), | |
1781 | g_currentloc); | |
1782 | ||
1783 | uentryList_elements (params, current) | |
1784 | { | |
1785 | uentry_setParam (current); | |
1786 | uentry_setSref (current, sRef_makeParam (paramno, ctype_unknown)); | |
1787 | paramno++; | |
1788 | } end_uentryList_elements; | |
1789 | ||
1790 | setGenericParamList (params); | |
1791 | g_expectingTypeName = TRUE; | |
1792 | ||
1793 | return params; | |
1794 | } | |
1795 | ||
1796 | /*@dependent@*/ uentryList handleParamTypeList (/*@returned@*/ uentryList params) | |
1797 | { | |
1798 | if (flipOldStyle) | |
1799 | { | |
1800 | uentryList_fixMissingNames (params); | |
1801 | ||
1802 | voptgenerror (FLG_OLDSTYLE, | |
1803 | cstring_makeLiteral ("Old style function declaration."), | |
1804 | g_currentloc); | |
1805 | ||
1806 | setGenericParamList (params); | |
1807 | flipOldStyle = FALSE; | |
1808 | g_expectingTypeName = TRUE; | |
1809 | } | |
1810 | ||
1811 | return (params); | |
1812 | } | |
1813 | ||
1814 | void | |
1815 | doVaDcl () | |
1816 | { | |
1817 | ctype c = ctype_unknown; | |
1818 | cstring id = cstring_makeLiteral ("va_alist"); | |
1819 | uentry e; | |
1820 | ||
1821 | if (ProcessingParams) | |
1822 | { | |
1823 | int i = uentryList_lookupRealName (saveParamList, id); | |
1824 | ||
1825 | if (i >= 0) | |
1826 | { | |
1827 | e = uentry_makeVariableSrefParam (id, c, sRef_makeParam (i, c)); | |
1828 | } | |
1829 | else | |
1830 | { | |
1831 | e = uentry_undefined; /* suppress gcc message */ | |
1832 | llfatalerrorLoc (cstring_makeLiteral ("va_dcl used without va_alist")); | |
1833 | } | |
1834 | } | |
1835 | else | |
1836 | { | |
1837 | llerror (FLG_SYNTAX, cstring_makeLiteral ("va_dcl used outside of function declaration")); | |
1838 | e = uentry_makeVariableLoc (id, c); | |
1839 | } | |
1840 | ||
1841 | cstring_free (id); | |
1842 | uentry_setUsed (e, g_currentloc); | |
1843 | usymtab_supEntrySref (e); | |
1844 | } | |
1845 | ||
1846 | /*@exposed@*/ sRef modListPointer (sRef s) | |
1847 | { | |
1848 | ctype ct = sRef_getType (s); | |
1849 | ctype rt = ctype_realType (ct); | |
1850 | ||
1851 | if (ctype_isAP (rt)) | |
1852 | { | |
1853 | if (context_inHeader () && ctype_isAbstract (ct)) | |
1854 | { | |
1855 | voptgenerror | |
1856 | (FLG_ABSTRACT, | |
1857 | message | |
1858 | ("Modifies clause in header file dereferences abstract " | |
1859 | "type %s (interface modifies clause should not depend " | |
1860 | "on or expose type representation): %q", | |
1861 | ctype_unparse (ct), | |
1862 | sRef_unparse (s)), | |
1863 | g_currentloc); | |
1864 | } | |
1865 | ||
1866 | return (sRef_constructPointer (s)); | |
1867 | } | |
1868 | else | |
1869 | { | |
1870 | if (ctype_isKnown (rt)) | |
1871 | { | |
1872 | voptgenerror | |
1873 | (FLG_TYPE, | |
1874 | message ("Implementation modifies clause dereferences non-pointer (type %s): %q", | |
1875 | ctype_unparse (rt), | |
1876 | sRef_unparse (s)), | |
1877 | g_currentloc); | |
1878 | } | |
1879 | ||
1880 | return s; | |
1881 | } | |
1882 | } | |
1883 | ||
1884 | /*@exposed@*/ sRef modListFieldAccess (sRef s, cstring f) | |
1885 | { | |
1886 | ctype ct = sRef_getType (s); | |
1887 | ctype rt = ctype_realType (ct); | |
1888 | ||
1889 | if (ctype_isStructorUnion (rt)) | |
1890 | { | |
1891 | uentry tf = uentryList_lookupField (ctype_getFields (rt), f); | |
1892 | ||
1893 | if (uentry_isUndefined (tf)) | |
1894 | { | |
1895 | voptgenerror (FLG_TYPE, | |
1896 | message ("Modifies list accesses non-existent " | |
1897 | "field %s of %t: %q", f, ct, | |
1898 | sRef_unparse (s)), | |
1899 | g_currentloc); | |
1900 | ||
1901 | cstring_free (f); | |
1902 | return sRef_undefined; | |
1903 | } | |
1904 | else | |
1905 | { | |
1906 | if (ctype_isAbstract (ct) && context_inHeader ()) | |
1907 | { | |
1908 | voptgenerror | |
1909 | (FLG_ABSTRACT, | |
1910 | message | |
1911 | ("Modifies clause in header file accesses abstract " | |
1912 | "type %s (interface modifies clause should not depend " | |
1913 | "on or expose type representation): %q", | |
1914 | ctype_unparse (ct), | |
1915 | sRef_unparse (s)), | |
1916 | g_currentloc); | |
1917 | } | |
1918 | } | |
1919 | ||
1920 | cstring_markOwned (f); | |
1921 | return (sRef_makeField (s, f)); | |
1922 | } | |
1923 | else | |
1924 | { | |
1925 | voptgenerror | |
1926 | (FLG_TYPE, | |
1927 | message ("Modifies clause dereferences non-pointer (type %s): %q", | |
1928 | ctype_unparse (rt), | |
1929 | sRef_unparse (s)), | |
1930 | g_currentloc); | |
1931 | ||
1932 | cstring_free (f); | |
1933 | return s; | |
1934 | } | |
1935 | } | |
1936 | ||
1937 | sRef globListUnrecognized (cstring s) | |
1938 | { | |
1939 | if (cstring_equalLit (s, "nothing")) | |
1940 | { | |
1941 | return sRef_makeNothing (); | |
1942 | } | |
1943 | else if (cstring_equalLit (s, "internalState")) | |
1944 | { | |
1945 | return sRef_makeInternalState (); | |
1946 | } | |
1947 | else if (cstring_equalLit (s, "fileSystem") | |
1948 | || cstring_equalLit (s, "systemState")) | |
1949 | { | |
1950 | return sRef_makeSystemState (); | |
1951 | } | |
1952 | else | |
1953 | { | |
1954 | voptgenerror | |
1955 | (FLG_UNRECOG, | |
1956 | message ("Unrecognized identifier in globals list: %s", s), | |
1957 | g_currentloc); | |
1958 | ||
1959 | return sRef_undefined; | |
1960 | } | |
1961 | } | |
1962 | ||
1963 | /*@exposed@*/ sRef modListArrowAccess (sRef s, cstring f) | |
1964 | { | |
1965 | ctype ct = sRef_getType (s); | |
1966 | ctype rt = ctype_realType (ct); | |
1967 | ||
1968 | if (ctype_isRealPointer (rt)) | |
1969 | { | |
1970 | ctype b = ctype_baseArrayPtr (rt); | |
1971 | ctype rb = ctype_realType (b); | |
1972 | ||
1973 | if (ctype_isStructorUnion (rb)) | |
1974 | { | |
1975 | uentry tf = uentryList_lookupField (ctype_getFields (rb), f); | |
1976 | ||
1977 | if (uentry_isUndefined (tf)) | |
1978 | { | |
1979 | voptgenerror (FLG_TYPE, | |
1980 | message ("Modifies list arrow accesses non-existent " | |
1981 | "field %s of %t: %q", f, b, | |
1982 | sRef_unparse (s)), | |
1983 | g_currentloc); | |
1984 | ||
1985 | cstring_free (f); | |
1986 | return sRef_undefined; | |
1987 | } | |
1988 | else | |
1989 | { | |
1990 | if (context_inHeader ()) | |
1991 | { | |
1992 | if (ctype_isAbstract (b)) | |
1993 | { | |
1994 | voptgenerror | |
1995 | (FLG_ABSTRACT, | |
1996 | message | |
1997 | ("Modifies clause in header file arrow accesses abstract " | |
1998 | "type %s (interface modifies clause should not depend " | |
1999 | "on or expose type representation): %q", | |
2000 | ctype_unparse (b), | |
2001 | sRef_unparse (s)), | |
2002 | g_currentloc); | |
2003 | } | |
2004 | } | |
2005 | else | |
2006 | { | |
2007 | if (ctype_isAbstract (ct)) | |
2008 | { | |
2009 | voptgenerror | |
2010 | (FLG_ABSTRACT, | |
2011 | message | |
2012 | ("Modifies clause in header file arrow accesses abstract " | |
2013 | "type %s (interface modifies clause should not depend " | |
2014 | "on or expose type representation): %q", | |
2015 | ctype_unparse (ct), | |
2016 | sRef_unparse (s)), | |
2017 | g_currentloc); | |
2018 | } | |
2019 | } | |
2020 | } | |
2021 | ||
2022 | cstring_markOwned (f); | |
2023 | return (sRef_makeArrow (s, f)); | |
2024 | } | |
2025 | else | |
2026 | { | |
2027 | voptgenerror | |
2028 | (FLG_TYPE, | |
2029 | message ("Modifies clause arrow accesses pointer to " | |
2030 | "non-structure (type %s): %q", | |
2031 | ctype_unparse (rt), | |
2032 | sRef_unparse (s)), | |
2033 | g_currentloc); | |
2034 | } | |
2035 | } | |
2036 | else | |
2037 | { | |
2038 | voptgenerror | |
2039 | (FLG_TYPE, | |
2040 | message ("Modifies clause arrow accesses non-pointer (type %s): %q", | |
2041 | ctype_unparse (rt), | |
2042 | sRef_unparse (s)), | |
2043 | g_currentloc); | |
2044 | } | |
2045 | ||
2046 | cstring_free (f); | |
2047 | return s; | |
2048 | } | |
2049 | ||
2050 | sRef checkSpecClausesId (uentry ue) | |
2051 | { | |
2052 | cstring s = uentry_rawName (ue); | |
2053 | ||
2054 | if (sRef_isGlobal (uentry_getSref (ue))) | |
2055 | { | |
2056 | voptgenerror | |
2057 | (FLG_SYNTAX, | |
2058 | message ("Global variable %s used special clause. (Global variables " | |
2059 | "are not recognized in special clauses. If there is " | |
2060 | "sufficient interest in support for this, it may be " | |
2061 | "added to a future release. Send mail to " | |
2062 | "lclint@cs.virginia.edu.)", | |
2063 | s), | |
2064 | g_currentloc); | |
2065 | ||
2066 | return sRef_undefined; | |
2067 | } | |
2068 | else | |
2069 | { | |
2070 | if (cstring_equalLit (s, "result")) | |
2071 | { | |
2072 | if (optgenerror | |
2073 | (FLG_SYNTAX, | |
2074 | message ("Special clause list uses %s which is a variable and has special " | |
2075 | "meaning in a modifies list. (Special meaning assumed.)", s), | |
2076 | g_currentloc)) | |
2077 | { | |
2078 | uentry_showWhereDeclared (ue); | |
2079 | } | |
2080 | } | |
2081 | ||
2082 | return uentry_getSref (ue); | |
2083 | } | |
2084 | } | |
2085 | ||
2086 | ||
2087 | void checkModifiesId (uentry ue) | |
2088 | { | |
2089 | cstring s = uentry_rawName (ue); | |
2090 | ||
2091 | if (cstring_equalLit (s, "nothing") | |
2092 | || cstring_equalLit (s, "internalState") | |
2093 | || cstring_equalLit (s, "systemState") | |
2094 | || (cstring_equalLit (s, "fileSystem"))) | |
2095 | { | |
2096 | if (optgenerror | |
2097 | (FLG_SYNTAX, | |
2098 | message ("Modifies list uses %s which is a variable and has special " | |
2099 | "meaning in a modifies list. (Special meaning assumed.)", s), | |
2100 | g_currentloc)) | |
2101 | { | |
2102 | uentry_showWhereDeclared (ue); | |
2103 | } | |
2104 | } | |
2105 | } | |
2106 | ||
2107 | /*@exposed@*/ sRef fixModifiesId (cstring s) | |
2108 | { | |
2109 | sRef ret; | |
2110 | cstring pname = makeParam (s); | |
2111 | uentry ue = usymtab_lookupSafe (pname); | |
2112 | ||
2113 | cstring_free (pname); | |
2114 | ||
2115 | if (cstring_equalLit (s, "nothing")) | |
2116 | { | |
2117 | ret = sRef_makeNothing (); | |
2118 | } | |
2119 | else if (cstring_equalLit (s, "internalState")) | |
2120 | { | |
2121 | ret = sRef_makeInternalState (); | |
2122 | } | |
2123 | else if (cstring_equalLit (s, "fileSystem") | |
2124 | || cstring_equalLit (s, "systemState")) | |
2125 | { | |
2126 | ret = sRef_makeSystemState (); | |
2127 | } | |
2128 | else | |
2129 | { | |
2130 | ret = sRef_undefined; | |
2131 | } | |
2132 | ||
2133 | if (sRef_isValid (ret)) | |
2134 | { | |
2135 | if (uentry_isValid (ue)) | |
2136 | { | |
2137 | voptgenerror | |
2138 | (FLG_SYNTAX, | |
2139 | message ("Modifies list uses %s which is a parameter and has special " | |
2140 | "meaning in a modifies list. (Special meaning assumed.)", s), | |
2141 | g_currentloc); | |
2142 | } | |
2143 | } | |
2144 | else | |
2145 | { | |
2146 | if (uentry_isValid (ue)) | |
2147 | { | |
2148 | ret = uentry_getSref (ue); | |
2149 | } | |
2150 | else | |
2151 | { | |
2152 | fileloc loc = fileloc_decColumn (g_currentloc, cstring_length (s)); | |
2153 | ret = sRef_undefined; | |
2154 | ||
2155 | voptgenerror | |
2156 | (FLG_UNRECOG, | |
2157 | message ("Unrecognized identifier in modifies comment: %s", s), | |
2158 | loc); | |
2159 | ||
2160 | fileloc_free (loc); | |
2161 | } | |
2162 | } | |
2163 | ||
2164 | return ret; | |
2165 | } | |
2166 | ||
2167 | sRef fixSpecClausesId (cstring s) | |
2168 | { | |
2169 | sRef ret; | |
2170 | cstring pname = makeParam (s); | |
2171 | uentry ue = usymtab_lookupSafe (pname); | |
2172 | ||
2173 | cstring_free (pname); | |
2174 | ||
2175 | if (cstring_equalLit (s, "result")) | |
2176 | { | |
2177 | ret = sRef_makeResult (); | |
2178 | } | |
2179 | else | |
2180 | { | |
2181 | ret = sRef_undefined; | |
2182 | } | |
2183 | ||
2184 | if (sRef_isValid (ret)) | |
2185 | { | |
2186 | if (uentry_isValid (ue)) | |
2187 | { | |
2188 | voptgenerror | |
2189 | (FLG_SYNTAX, | |
2190 | message ("Special clause uses %s which is a parameter and has special " | |
2191 | "meaning in a special clause. (Special meaning assumed.)", s), | |
2192 | g_currentloc); | |
2193 | } | |
2194 | } | |
2195 | else | |
2196 | { | |
2197 | if (uentry_isValid (ue)) | |
2198 | { | |
2199 | ret = uentry_getSref (ue); | |
2200 | ||
2201 | if (sRef_isGlobal (ret)) | |
2202 | { | |
2203 | voptgenerror | |
2204 | (FLG_SYNTAX, | |
2205 | message ("Global variable %s used special clause. (Global variables " | |
2206 | "are not recognized in special clauses. If there is " | |
2207 | "sufficient interest in support for this, it may be " | |
2208 | "added to a future release. Send mail to " | |
2209 | "lclint@cs.virginia.edu.)", | |
2210 | s), | |
2211 | g_currentloc); | |
2212 | ||
2213 | ret = sRef_undefined; | |
2214 | } | |
2215 | } | |
2216 | else | |
2217 | { | |
2218 | fileloc loc = fileloc_decColumn (g_currentloc, cstring_length (s)); | |
2219 | ret = sRef_undefined; | |
2220 | ||
2221 | voptgenerror | |
2222 | (FLG_UNRECOG, | |
2223 | message ("Unrecognized identifier in special clause: %s", s), | |
2224 | loc); | |
2225 | ||
2226 | fileloc_free (loc); | |
2227 | } | |
2228 | } | |
2229 | ||
2230 | return ret; | |
2231 | } | |
2232 | ||
2233 | sRef modListArrayFetch (sRef s, /*@unused@*/ sRef mexp) | |
2234 | { | |
2235 | ctype ct = sRef_getType (s); | |
2236 | ctype rt = ctype_realType (ct); | |
2237 | ||
2238 | if (ctype_isAP (rt)) | |
2239 | { | |
2240 | if (context_inHeader () && ctype_isAbstract (ct)) | |
2241 | { | |
2242 | voptgenerror | |
2243 | (FLG_ABSTRACT, | |
2244 | message | |
2245 | ("Modifies clause in header file indexes abstract " | |
2246 | "type %s (interface modifies clause should not depend " | |
2247 | "on or expose type representation): %q", | |
2248 | ctype_unparse (ct), | |
2249 | sRef_unparse (s)), | |
2250 | g_currentloc); | |
2251 | } | |
2252 | ||
2253 | return (sRef_makeAnyArrayFetch (s)); | |
2254 | } | |
2255 | else | |
2256 | { | |
2257 | voptgenerror | |
2258 | (FLG_TYPE, | |
2259 | message | |
2260 | ("Implementation modifies clause uses array fetch on non-array (type %s): %q", | |
2261 | ctype_unparse (ct), sRef_unparse (s)), | |
2262 | g_currentloc); | |
2263 | return s; | |
2264 | } | |
2265 | } | |
2266 | ||
2267 | ||
2268 | ||
2269 | ||
2270 | ||
2271 | ||
2272 | ||
2273 |