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1 | /* | |
2 | ** Splint - annotation-assisted static program checker | |
3 | ** Copyright (C) 1994-2002 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 splint: info@splint.org | |
21 | ** To report a bug: splint-bug@splint.org | |
22 | ** For more information: http://www.splint.org | |
23 | */ | |
24 | /* | |
25 | ** clabstract.c | |
26 | ** | |
27 | ** ASTs for C grammar | |
28 | ** | |
29 | */ | |
30 | ||
31 | # include "splintMacros.nf" | |
32 | # include "llbasic.h" | |
33 | # include "cgrammar.h" | |
34 | ||
35 | # ifndef NOLCL | |
36 | # include "usymtab_interface.h" | |
37 | # endif | |
38 | ||
39 | # include "structNames.h" | |
40 | # include "nameChecks.h" | |
41 | ||
42 | # ifdef SANITIZER | |
43 | # include "sgrammar_tokens.h" | |
44 | # else | |
45 | # include "cgrammar_tokens.h" | |
46 | # endif | |
47 | ||
48 | /* | |
49 | ** Lots of variables are needed because of interactions with the | |
50 | ** parser. This is easier than restructuring the grammar so the | |
51 | ** right values are available in the right place. | |
52 | */ | |
53 | ||
54 | /*drl*/ | |
55 | static /*@only@*/ constraintList implicitFcnConstraints = NULL; | |
56 | ||
57 | static void clabstract_prepareFunction (uentry p_e) /*@modifies p_e@*/ ; | |
58 | static bool fcnNoGlobals = FALSE; | |
59 | static void processVariable (/*@temp@*/ idDecl p_t) /*@modifies internalState@*/ ; | |
60 | ||
61 | static bool s_processingVars = FALSE; | |
62 | static bool s_processingParams = FALSE; | |
63 | static bool s_processingGlobals = FALSE; | |
64 | static bool s_processingTypedef = FALSE; | |
65 | static bool s_processingIterVars = FALSE; | |
66 | static /*@only@*/ qtype processingType = qtype_undefined; | |
67 | static uentry currentIter = uentry_undefined; | |
68 | static /*@dependent@*/ uentryList saveParamList; /* for old style functions */ | |
69 | static /*@owned@*/ uentry saveFunction = uentry_undefined; | |
70 | static int saveIterParamNo; | |
71 | static idDecl fixStructDecl (/*@returned@*/ idDecl p_d); | |
72 | static void checkTypeDecl (uentry p_e, ctype p_rep); | |
73 | static /*@dependent@*/ fileloc saveStoreLoc = fileloc_undefined; | |
74 | static storageClassCode storageClass = SCNONE; | |
75 | static void declareEnumList (/*@temp@*/ enumNameList p_el, ctype p_c, fileloc p_loc); | |
76 | static void resetGlobals (void); | |
77 | static /*@null@*/ qual specialFunctionCode; | |
78 | static bool argsUsed = FALSE; | |
79 | ||
80 | extern void clabstract_initMod () | |
81 | { | |
82 | specialFunctionCode = qual_createUnknown (); | |
83 | DPRINTF (("Initialized: %s", qual_unparse (specialFunctionCode))); | |
84 | } | |
85 | ||
86 | static bool hasSpecialCode (void) | |
87 | { | |
88 | return (!qual_isUnknown (specialFunctionCode)); | |
89 | } | |
90 | ||
91 | extern void setArgsUsed (void) | |
92 | { | |
93 | if (argsUsed) | |
94 | { | |
95 | voptgenerror | |
96 | (FLG_SYNTAX, | |
97 | cstring_makeLiteral ("Multiple ARGSUSED comments for one function"), | |
98 | g_currentloc); | |
99 | } | |
100 | ||
101 | argsUsed = TRUE; | |
102 | } | |
103 | ||
104 | static void reflectArgsUsed (uentry ue) | |
105 | { | |
106 | if (argsUsed) | |
107 | { | |
108 | if (uentry_isFunction (ue)) | |
109 | { | |
110 | uentryList params = uentry_getParams (ue); | |
111 | ||
112 | uentryList_elements (params, el) | |
113 | { | |
114 | uentry_setUsed (el, fileloc_undefined); | |
115 | } end_uentryList_elements ; | |
116 | } | |
117 | ||
118 | argsUsed = FALSE; | |
119 | } | |
120 | } | |
121 | ||
122 | extern void setSpecialFunction (qual qu) | |
123 | { | |
124 | if (!qual_isUnknown (specialFunctionCode)) | |
125 | { | |
126 | voptgenerror (FLG_SYNTAX, | |
127 | message ("Multiple special function codes: %s, %s " | |
128 | "(first code is ignored)", | |
129 | qual_unparse (specialFunctionCode), | |
130 | qual_unparse (qu)), | |
131 | g_currentloc); | |
132 | } | |
133 | ||
134 | specialFunctionCode = qu; | |
135 | } | |
136 | ||
137 | static void reflectSpecialCode (uentry ue) | |
138 | { | |
139 | if (qual_isUnknown (specialFunctionCode)) { | |
140 | ; | |
141 | } else if (qual_isPrintfLike (specialFunctionCode)) { | |
142 | uentry_setPrintfLike (ue); | |
143 | } else if (qual_isScanfLike (specialFunctionCode)) { | |
144 | uentry_setScanfLike (ue); | |
145 | } else if (qual_isMessageLike (specialFunctionCode)) { | |
146 | uentry_setMessageLike (ue); | |
147 | } else { | |
148 | BADBRANCH; | |
149 | } | |
150 | ||
151 | specialFunctionCode = qual_createUnknown (); | |
152 | } | |
153 | ||
154 | static void resetStorageClass (void) | |
155 | { | |
156 | qtype_free (processingType); | |
157 | processingType = qtype_undefined; | |
158 | storageClass = SCNONE; | |
159 | } | |
160 | ||
161 | static void reflectStorageClass (uentry u) | |
162 | { | |
163 | if (storageClass == SCSTATIC) | |
164 | { | |
165 | uentry_setStatic (u); | |
166 | } | |
167 | else if (storageClass == SCEXTERN) | |
168 | { | |
169 | uentry_setExtern (u); | |
170 | } | |
171 | else | |
172 | { | |
173 | ; /* no storage class */ | |
174 | } | |
175 | ||
176 | } | |
177 | ||
178 | void storeLoc () | |
179 | { | |
180 | saveStoreLoc = g_currentloc; | |
181 | } | |
182 | ||
183 | void setFunctionNoGlobals (void) | |
184 | { | |
185 | fcnNoGlobals = TRUE; | |
186 | } | |
187 | ||
188 | static void reflectGlobalQualifiers (sRef sr, qualList quals) | |
189 | { | |
190 | DPRINTF (("Reflect global qualifiers: %s / %s", | |
191 | sRef_unparseFull (sr), qualList_unparse (quals))); | |
192 | ||
193 | qualList_elements (quals, qel) | |
194 | { | |
195 | if (qual_isGlobalQual (qel)) /* undef, killed */ | |
196 | { | |
197 | sstate oldstate = sRef_getDefState (sr); | |
198 | sstate defstate = sstate_fromQual (qel); | |
199 | ||
200 | if ((oldstate == SS_UNDEFGLOB && defstate == SS_KILLED) | |
201 | || (oldstate == SS_KILLED && defstate == SS_UNDEFGLOB)) | |
202 | { | |
203 | defstate = SS_UNDEFKILLED; | |
204 | } | |
205 | else | |
206 | { | |
207 | ; /* any errors? */ | |
208 | } | |
209 | ||
210 | sRef_setDefState (sr, defstate, fileloc_undefined); | |
211 | DPRINTF (("State: %s", sRef_unparseFull (sr))); | |
212 | } | |
213 | else if (qual_isAllocQual (qel)) /* out, partial, reldef, etc. */ | |
214 | { | |
215 | ctype realType = sRef_getType (sr); | |
216 | sstate defstate = sstate_fromQual (qel); | |
217 | ||
218 | if (qual_isRelDef (qel)) | |
219 | { | |
220 | ; /* okay anywhere */ | |
221 | } | |
222 | else | |
223 | { | |
224 | if (!ctype_isAP (realType) | |
225 | && !ctype_isSU (realType) | |
226 | && !ctype_isUnknown (realType) | |
227 | && !ctype_isAbstract (sRef_getType (sr))) | |
228 | { | |
229 | llerror | |
230 | (FLG_SYNTAX, | |
231 | message ("Qualifier %s used on non-pointer or struct: %q", | |
232 | qual_unparse (qel), sRef_unparse (sr))); | |
233 | ||
234 | } | |
235 | } | |
236 | ||
237 | sRef_setDefState (sr, defstate, fileloc_undefined); | |
238 | } | |
239 | else if (qual_isNull (qel)) | |
240 | { | |
241 | sRef_setNullState (sr, NS_POSNULL, fileloc_undefined); | |
242 | } | |
243 | else if (qual_isRelNull (qel)) | |
244 | { | |
245 | sRef_setNullState (sr, NS_RELNULL, fileloc_undefined); | |
246 | } | |
247 | else if (qual_isNotNull (qel)) | |
248 | { | |
249 | sRef_setNullState (sr, NS_MNOTNULL, fileloc_undefined); | |
250 | } | |
251 | else | |
252 | { | |
253 | if (qual_isCQual (qel)) | |
254 | { | |
255 | ; /* okay */ | |
256 | } | |
257 | else | |
258 | { | |
259 | llerror (FLG_SYNTAX, | |
260 | message ("Qualifier %s cannot be used in a globals list", | |
261 | qual_unparse (qel))); | |
262 | } | |
263 | } | |
264 | } end_qualList_elements; | |
265 | } | |
266 | ||
267 | sRef clabstract_createGlobal (sRef sr, qualList quals) | |
268 | { | |
269 | sRef res; | |
270 | ||
271 | if (sRef_isValid (sr)) | |
272 | { | |
273 | res = sRef_copy (sr); | |
274 | DPRINTF (("Reflecting quals: %s / %s", sRef_unparse (sr), qualList_unparse (quals))); | |
275 | reflectGlobalQualifiers (res, quals); | |
276 | DPRINTF (("==> %s", sRef_unparseFull (res))); | |
277 | } | |
278 | else | |
279 | { | |
280 | res = sRef_undefined; | |
281 | } | |
282 | ||
283 | qualList_free (quals); | |
284 | return res; | |
285 | } | |
286 | ||
287 | extern void declareCIter (cstring name, /*@owned@*/ uentryList params) | |
288 | { | |
289 | uentry ue; | |
290 | ||
291 | ue = uentry_makeIter (name, | |
292 | ctype_makeFunction (ctype_void, params), | |
293 | fileloc_copy (g_currentloc)); | |
294 | ||
295 | usymtab_supEntry (uentry_makeEndIter (name, fileloc_copy (g_currentloc))); | |
296 | ue = usymtab_supGlobalEntryReturn (ue); | |
297 | } | |
298 | ||
299 | extern void nextIterParam (void) | |
300 | { | |
301 | llassert (s_processingIterVars); | |
302 | saveIterParamNo++; | |
303 | } | |
304 | ||
305 | extern int iterParamNo (void) | |
306 | { | |
307 | llassert (s_processingIterVars); | |
308 | return saveIterParamNo; | |
309 | } | |
310 | ||
311 | /* | |
312 | ** yucky hacks to put it in the right place | |
313 | */ | |
314 | ||
315 | /*@only@*/ uentry | |
316 | makeCurrentParam (idDecl t) | |
317 | { | |
318 | uentry ue; | |
319 | ||
320 | saveStoreLoc = fileloc_undefined; | |
321 | ||
322 | /* param number unknown */ | |
323 | ||
324 | ue = uentry_makeParam (t, 0); | |
325 | return ue; | |
326 | } | |
327 | ||
328 | ctype | |
329 | declareUnnamedEnum (enumNameList el) | |
330 | { | |
331 | ctype ret = usymtab_enumEnumNameListType (el); | |
332 | ctype rt; | |
333 | uentry e; | |
334 | ||
335 | if (ctype_isDefined (ret)) | |
336 | { | |
337 | rt = ret; | |
338 | e = uentry_makeEnumTagLoc (ctype_enumTag (rt), ret); | |
339 | ||
340 | reflectStorageClass (e); | |
341 | usymtab_supGlobalEntry (e); | |
342 | ||
343 | declareEnumList (el, ret, g_currentloc); | |
344 | enumNameList_free (el); | |
345 | } | |
346 | else | |
347 | { | |
348 | ctype ct = ctype_createEnum (fakeTag (), el); | |
349 | ||
350 | e = uentry_makeEnumTagLoc (ctype_enumTag (ctype_realType (ct)), ct); | |
351 | reflectStorageClass (e); | |
352 | ||
353 | e = usymtab_supGlobalEntryReturn (e); | |
354 | rt = uentry_getAbstractType (e); | |
355 | declareEnumList (el, ct, g_currentloc); | |
356 | } | |
357 | ||
358 | return (rt); | |
359 | } | |
360 | ||
361 | ctype | |
362 | declareEnum (cstring ename, enumNameList el) | |
363 | { | |
364 | ctype cet; | |
365 | uentry e; | |
366 | ||
367 | llassert (cstring_isDefined (ename)); | |
368 | ||
369 | cet = ctype_createEnum (ename, el); | |
370 | e = uentry_makeEnumTagLoc (ename, cet); | |
371 | reflectStorageClass (e); | |
372 | e = usymtab_supGlobalEntryReturn (e); | |
373 | cet = uentry_getType (e); | |
374 | declareEnumList (el, cet, uentry_whereLast (e)); | |
375 | return (uentry_getAbstractType (e)); | |
376 | } | |
377 | ||
378 | static void | |
379 | declareEnumList (enumNameList el, ctype c, fileloc loc) | |
380 | { | |
381 | bool boolnames = FALSE; | |
382 | bool othernames = FALSE; | |
383 | ||
384 | (void) context_getSaveLocation (); /* undefine it */ | |
385 | ||
386 | if (context_maybeSet (FLG_NUMENUMMEMBERS)) | |
387 | { | |
388 | int maxnum = context_getValue (FLG_NUMENUMMEMBERS); | |
389 | int num = enumNameList_size (el); | |
390 | ||
391 | if (num > maxnum) | |
392 | { | |
393 | voptgenerror | |
394 | (FLG_NUMENUMMEMBERS, | |
395 | message ("Enumerator %s declared with %d members (limit is set to %d)", | |
396 | ctype_unparse (c), num, maxnum), | |
397 | loc); | |
398 | } | |
399 | } | |
400 | ||
401 | enumNameList_elements (el, e) | |
402 | { | |
403 | uentry ue = usymtab_lookupExposeGlob (e); | |
404 | ctype ct = uentry_getType (ue); | |
405 | ||
406 | llassert (uentry_isEnumConstant (ue)); | |
407 | ||
408 | if (ctype_isUnknown (ct)) | |
409 | { | |
410 | uentry_setType (ue, c); | |
411 | } | |
412 | else | |
413 | { | |
414 | if (cstring_equal (e, context_getFalseName ()) | |
415 | || cstring_equal (e, context_getTrueName ())) | |
416 | { | |
417 | if (othernames) | |
418 | { | |
419 | if (optgenerror | |
420 | (FLG_INCONDEFS, | |
421 | message ("Enumerator mixes boolean name (%s) with " | |
422 | "non-boolean names", | |
423 | e), | |
424 | uentry_whereLast (ue))) | |
425 | { | |
426 | ; | |
427 | } | |
428 | } | |
429 | ||
430 | boolnames = TRUE; | |
431 | uentry_setType (ue, ctype_bool); | |
432 | DPRINTF (("Set type: %s / %s", | |
433 | uentry_unparse (ue), ctype_unparse (ctype_bool))); | |
434 | } | |
435 | else | |
436 | { | |
437 | if (boolnames) | |
438 | { | |
439 | if (optgenerror | |
440 | (FLG_INCONDEFS, | |
441 | message ("Enumerator mixes boolean names (%s, %s) with " | |
442 | "non-boolean name: %s", | |
443 | context_getTrueName (), | |
444 | context_getFalseName (), | |
445 | e), | |
446 | uentry_whereLast (ue))) | |
447 | { | |
448 | ; | |
449 | } | |
450 | } | |
451 | ||
452 | othernames = TRUE; | |
453 | } | |
454 | ||
455 | if (!ctype_match (c, ct)) | |
456 | { | |
457 | if (ctype_isDirectBool (ct)) | |
458 | { | |
459 | if (cstring_equal (e, context_getFalseName ()) | |
460 | || cstring_equal (e, context_getTrueName ())) | |
461 | { | |
462 | DPRINTF (("Here we are!")); | |
463 | } | |
464 | else | |
465 | { | |
466 | if (optgenerror | |
467 | (FLG_INCONDEFS, | |
468 | message ("Enumerator member %s declared with " | |
469 | "inconsistent type: %s", | |
470 | e, ctype_unparse (c)), | |
471 | uentry_whereLast (ue))) | |
472 | { | |
473 | uentry_showWhereSpecifiedExtra | |
474 | (ue, cstring_copy (ctype_unparse (ct))); | |
475 | } | |
476 | } | |
477 | } | |
478 | else | |
479 | { | |
480 | if (optgenerror | |
481 | (FLG_INCONDEFS, | |
482 | message ("Enumerator member %s declared with " | |
483 | "inconsistent type: %s", | |
484 | e, ctype_unparse (c)), | |
485 | uentry_whereLast (ue))) | |
486 | { | |
487 | uentry_showWhereSpecifiedExtra | |
488 | (ue, cstring_copy (ctype_unparse (ct))); | |
489 | } | |
490 | } | |
491 | } | |
492 | } | |
493 | } end_enumNameList_elements; | |
494 | } | |
495 | ||
496 | static /*@dependent@*/ uentryList currentParamList; | |
497 | ||
498 | /*drl added 3-28-2002*/ | |
499 | /* this function takes a list of paramentar and generates a list | |
500 | of constraints. | |
501 | Currently the only constraints gnerated are MaxSet(p) >= 0 for all pointers | |
502 | */ | |
503 | ||
504 | void setImplictfcnConstraints (void) | |
505 | { | |
506 | uentryList params; | |
507 | sRef s; | |
508 | constraint c; | |
509 | params = currentParamList; | |
510 | ||
511 | if (constraintList_isDefined(implicitFcnConstraints) ) | |
512 | constraintList_free(implicitFcnConstraints); | |
513 | ||
514 | implicitFcnConstraints = constraintList_makeNew(); | |
515 | ||
516 | uentryList_elements (params, el) | |
517 | { | |
518 | DPRINTF((message("setImplictfcnConstraints doing: %s", uentry_unparse(el) ) )); | |
519 | ||
520 | s = uentry_getSref(el); | |
521 | if (sRef_isReference (s) ) | |
522 | { | |
523 | DPRINTF((message ("%s is a pointer", sRef_unparse(s) ) )); | |
524 | } | |
525 | else | |
526 | { | |
527 | DPRINTF((message ("%s is NOT a pointer", sRef_unparse(s) ) )); | |
528 | } | |
529 | /*drl 4/26/01 | |
530 | chagned this is MaxSet(s) == 0 to MaxSet(s) >= 0 */ | |
531 | ||
532 | c = constraint_makeSRefWriteSafeInt (s, 0); | |
533 | /* constraint_makeSRefSetBufferSize (s, 0); */ | |
534 | implicitFcnConstraints = constraintList_add(implicitFcnConstraints , c); | |
535 | } | |
536 | end_uentryList_elements; | |
537 | } | |
538 | ||
539 | ||
540 | /*@observer@*/ constraintList getImplicitFcnConstraints (void) | |
541 | { | |
542 | return implicitFcnConstraints; | |
543 | } | |
544 | ||
545 | void setCurrentParams (/*@dependent@*/ uentryList ue) | |
546 | { | |
547 | currentParamList = ue; | |
548 | } | |
549 | ||
550 | void clearCurrentParams (void) | |
551 | { | |
552 | currentParamList = uentryList_undefined; | |
553 | } | |
554 | ||
555 | /* | |
556 | ** requires: uentry_isFunction (e) | |
557 | ** parameter names for current function are in currentParamList | |
558 | */ | |
559 | ||
560 | static void enterFunctionParams (uentryList params) | |
561 | { | |
562 | int paramno = 0; | |
563 | ||
564 | uentryList_elements (params, current) | |
565 | { | |
566 | if (uentry_hasName (current)) | |
567 | { | |
568 | uentry_setParamNo (current, paramno); | |
569 | usymtab_supEntry (uentry_copy (current)); | |
570 | } | |
571 | ||
572 | paramno++; | |
573 | } end_uentryList_elements; | |
574 | } | |
575 | ||
576 | ||
577 | extern void enterParamsTemp (void) | |
578 | { | |
579 | usymtab_enterScope (); | |
580 | enterFunctionParams (currentParamList); | |
581 | } | |
582 | ||
583 | extern void exitParamsTemp (void) | |
584 | { | |
585 | usymtab_quietPlainExitScope (); | |
586 | } | |
587 | ||
588 | static /*@exposed@*/ uentry clabstract_globalDeclareFunction (idDecl tid) | |
589 | { | |
590 | ctype deftype = idDecl_getCtype (tid); | |
591 | ctype rettype; | |
592 | uentry ue; | |
593 | ||
594 | DPRINTF (("Global function: %s", idDecl_unparse (tid))); | |
595 | ||
596 | if (ctype_isFunction (deftype)) | |
597 | { | |
598 | rettype = ctype_getReturnType (deftype); | |
599 | } | |
600 | else | |
601 | { | |
602 | rettype = ctype_unknown; | |
603 | } | |
604 | ||
605 | /* | |
606 | ** check has been moved here... | |
607 | */ | |
608 | ||
609 | if (ctype_isFunction (idDecl_getCtype (tid))) | |
610 | { | |
611 | ue = uentry_makeIdFunction (tid); | |
612 | reflectSpecialCode (ue); | |
613 | reflectArgsUsed (ue); | |
614 | reflectStorageClass (ue); | |
615 | uentry_checkParams (ue); | |
616 | ||
617 | DPRINTF (("Supercede function: %s", uentry_unparseFull (ue))); | |
618 | ||
619 | ue = usymtab_supGlobalEntryReturn (ue); | |
620 | DPRINTF (("After supercede function: %s", uentry_unparseFull (ue))); | |
621 | ||
622 | DPRINTF (("Enter function: %s", uentry_unparseFull (ue))); | |
623 | context_enterFunction (ue); | |
624 | enterFunctionParams (uentry_getParams (ue)); | |
625 | ||
626 | resetStorageClass (); | |
627 | DPRINTF (("Function: %s", uentry_unparseFull (ue))); | |
628 | return (ue); | |
629 | } | |
630 | else | |
631 | { | |
632 | llparseerror (message ("Non-function declaration: %q", | |
633 | idDecl_unparse (tid))); | |
634 | return (uentry_undefined); | |
635 | } | |
636 | } | |
637 | ||
638 | /* | |
639 | ** for now, no type checking | |
640 | ** (must check later though!) | |
641 | */ | |
642 | ||
643 | static /*@only@*/ uentry globalDeclareOldStyleFunction (idDecl tid) | |
644 | { | |
645 | uentry ue; | |
646 | ||
647 | /* | |
648 | ** check has been moved here... | |
649 | */ | |
650 | ||
651 | if (cstring_equalLit (idDecl_observeId (tid), "main")) | |
652 | { | |
653 | context_setFlagTemp (FLG_MAINTYPE, FALSE); | |
654 | } | |
655 | ||
656 | ue = uentry_makeIdFunction (tid); | |
657 | reflectStorageClass (ue); | |
658 | reflectSpecialCode (ue); | |
659 | reflectArgsUsed (ue); | |
660 | uentry_setDefined (ue, g_currentloc); | |
661 | uentry_checkParams (ue); | |
662 | resetStorageClass (); | |
663 | ||
664 | /* context_enterOldStyleScope (); */ | |
665 | ||
666 | return (ue); | |
667 | } | |
668 | ||
669 | static void oldStyleDeclareFunction (/*@only@*/ uentry e) | |
670 | { | |
671 | uentryList params = saveParamList; | |
672 | ctype rt = uentry_getType (e); | |
673 | ||
674 | llassert (ctype_isFunction (rt)); | |
675 | ||
676 | if (uentry_hasStateClauseList (e) | |
677 | || uentry_hasConditions (e)) | |
678 | { | |
679 | llfatalerror (message ("%q: Old-style function declaration uses a clause (rewrite with function parameters): %q", | |
680 | fileloc_unparse (g_currentloc), uentry_unparse (e))); | |
681 | } | |
682 | ||
683 | e = usymtab_supGlobalEntryReturn (e); | |
684 | ||
685 | context_enterFunction (e); | |
686 | enterFunctionParams (params); | |
687 | saveParamList = uentryList_undefined; | |
688 | resetStorageClass (); | |
689 | } | |
690 | ||
691 | static void oldStyleCompleteFunction (/*@only@*/ uentry e) | |
692 | { | |
693 | uentryList params = saveParamList; | |
694 | ctype rt = uentry_getType (e); | |
695 | ||
696 | llassert (ctype_isFunction (rt)); | |
697 | ||
698 | if (uentry_hasStateClauseList (e) | |
699 | || uentry_hasConditions (e)) | |
700 | { | |
701 | llfatalerror (message ("%q: Old-style function declaration uses a clause (rewrite with function parameters): %q", | |
702 | fileloc_unparse (g_currentloc), uentry_unparse (e))); | |
703 | } | |
704 | ||
705 | e = usymtab_supGlobalEntryReturn (e); | |
706 | ||
707 | context_completeOldStyleFunction (e); | |
708 | enterFunctionParams (params); | |
709 | saveParamList = uentryList_undefined; | |
710 | resetStorageClass (); | |
711 | } | |
712 | ||
713 | void clabstract_declareFunction (idDecl tid) /*@globals undef saveFunction; @*/ | |
714 | { | |
715 | uentry ue; | |
716 | ||
717 | DPRINTF (("Declare function: %s", idDecl_unparse (tid))); | |
718 | ||
719 | if (ctype_isUnknown (idDecl_getCtype (tid))) | |
720 | { | |
721 | /* | |
722 | ** No type, its really a plain name (int) declaration | |
723 | */ | |
724 | ||
725 | voptgenerror (FLG_IMPTYPE, | |
726 | message ("No type before declaration name (implicit int type): %q", | |
727 | idDecl_unparse (tid)), | |
728 | g_currentloc); | |
729 | tid = idDecl_replaceCtype (tid, ctype_int); | |
730 | processVariable (tid); | |
731 | saveFunction = uentry_undefined; | |
732 | } | |
733 | else | |
734 | { | |
735 | if (s_processingParams) | |
736 | { | |
737 | ue = globalDeclareOldStyleFunction (tid); | |
738 | saveFunction = ue; | |
739 | DPRINTF (("Set save function: %s", uentry_unparseFull (ue))); | |
740 | } | |
741 | else | |
742 | { | |
743 | saveFunction = uentry_undefined; | |
744 | ||
745 | if (context_inRealFunction ()) | |
746 | { | |
747 | ue = uentry_makeVariableLoc (idDecl_observeId (tid), ctype_unknown); | |
748 | ||
749 | llparseerror (message ("Function declared inside function: %q", | |
750 | idDecl_unparse (tid))); | |
751 | ||
752 | context_quietExitFunction (); | |
753 | ue = usymtab_supEntryReturn (ue); | |
754 | } | |
755 | else | |
756 | { | |
757 | if (context_inInnerScope ()) | |
758 | { | |
759 | llparseerror (message ("Declaration in inner context: %q", | |
760 | idDecl_unparse (tid))); | |
761 | ||
762 | sRef_setGlobalScope (); | |
763 | ue = uentry_makeVariableLoc (idDecl_observeId (tid), | |
764 | ctype_unknown); | |
765 | ue = usymtab_supGlobalEntryReturn (ue); | |
766 | sRef_clearGlobalScope (); | |
767 | } | |
768 | else | |
769 | { | |
770 | ue = clabstract_globalDeclareFunction (tid); | |
771 | } | |
772 | } | |
773 | ||
774 | resetGlobals (); | |
775 | } | |
776 | ||
777 | resetStorageClass (); | |
778 | } | |
779 | ||
780 | idDecl_free (tid); | |
781 | } | |
782 | ||
783 | void declareStaticFunction (idDecl tid) /*@globals undef saveFunction; @*/ | |
784 | { | |
785 | uentry ue; | |
786 | ||
787 | DPRINTF (("Declare static funciton: %s", idDecl_unparse (tid))); | |
788 | ||
789 | if (s_processingParams) | |
790 | { | |
791 | ue = globalDeclareOldStyleFunction (tid); | |
792 | saveFunction = ue; | |
793 | } | |
794 | else | |
795 | { | |
796 | saveFunction = uentry_undefined; | |
797 | ||
798 | if (context_inRealFunction ()) | |
799 | { | |
800 | ue = uentry_makeVariableLoc (idDecl_observeId (tid), ctype_unknown); | |
801 | ||
802 | llparseerror (message ("Function declared inside function: %q", | |
803 | idDecl_unparse (tid))); | |
804 | ||
805 | context_quietExitFunction (); | |
806 | ue = usymtab_supEntryReturn (ue); | |
807 | } | |
808 | else | |
809 | { | |
810 | if (context_inInnerScope ()) | |
811 | { | |
812 | llparseerror (message ("Declaration in inner context: %q", | |
813 | idDecl_unparse (tid))); | |
814 | ||
815 | sRef_setGlobalScope (); | |
816 | ue = uentry_makeVariableLoc (idDecl_observeId (tid), | |
817 | ctype_unknown); | |
818 | ue = usymtab_supGlobalEntryReturn (ue); | |
819 | sRef_clearGlobalScope (); | |
820 | } | |
821 | else | |
822 | { | |
823 | ctype deftype = idDecl_getCtype (tid); | |
824 | ctype rettype; | |
825 | ||
826 | if (ctype_isFunction (deftype)) | |
827 | { | |
828 | rettype = ctype_getReturnType (deftype); | |
829 | } | |
830 | else | |
831 | { | |
832 | rettype = ctype_unknown; | |
833 | } | |
834 | ||
835 | /* | |
836 | ** check has been moved here... | |
837 | */ | |
838 | ||
839 | if (ctype_isFunction (idDecl_getCtype (tid))) | |
840 | { | |
841 | ue = uentry_makeIdFunction (tid); | |
842 | reflectSpecialCode (ue); | |
843 | reflectArgsUsed (ue); | |
844 | } | |
845 | else | |
846 | { | |
847 | DPRINTF (("Here we are!")); | |
848 | llparseerror (message ("Inconsistent function declaration: %q", | |
849 | idDecl_unparse (tid))); | |
850 | ||
851 | tid = idDecl_replaceCtype | |
852 | (tid, ctype_makeFunction (ctype_unknown, uentryList_undefined)); | |
853 | ue = uentry_makeIdFunction (tid); | |
854 | } | |
855 | ||
856 | reflectStorageClass (ue); | |
857 | uentry_setStatic (ue); | |
858 | ||
859 | uentry_checkParams (ue); | |
860 | ||
861 | DPRINTF (("Sub global entry: %s", uentry_unparse (ue))); | |
862 | ue = usymtab_supGlobalEntryReturn (ue); | |
863 | ||
864 | context_enterFunction (ue); | |
865 | enterFunctionParams (uentry_getParams (ue)); | |
866 | resetStorageClass (); | |
867 | } | |
868 | } | |
869 | ||
870 | resetGlobals (); | |
871 | } | |
872 | ||
873 | resetStorageClass (); | |
874 | idDecl_free (tid); | |
875 | } | |
876 | ||
877 | void | |
878 | checkTypeDecl (uentry e, ctype rep) | |
879 | { | |
880 | cstring n = uentry_getName (e); | |
881 | ||
882 | DPRINTF (("Check type decl: %s", uentry_unparseFull (e))); | |
883 | ||
884 | if (cstring_equal (context_getBoolName (), n)) | |
885 | { | |
886 | ctype rrep = ctype_realType (rep); | |
887 | ||
888 | /* | |
889 | ** for abstract enum types, we need to fix the enum members: | |
890 | ** they should have the abstract type, not the rep type. | |
891 | */ | |
892 | ||
893 | if (ctype_isEnum (ctype_realType (rrep))) | |
894 | { | |
895 | enumNameList el = ctype_elist (rrep); | |
896 | ||
897 | enumNameList_elements (el, ye) | |
898 | { | |
899 | if (usymtab_existsGlob (ye)) | |
900 | { | |
901 | uentry ue = usymtab_lookupSafe (ye); | |
902 | uentry_setType (ue, ctype_bool); | |
903 | } | |
904 | ||
905 | if (cstring_equal (context_getTrueName (), ye) | |
906 | || cstring_equal (context_getFalseName (), ye)) | |
907 | { | |
908 | ; | |
909 | } | |
910 | else | |
911 | { | |
912 | vgenhinterror | |
913 | (FLG_SYNTAX, | |
914 | message ("Member of boolean enumerated type definition " | |
915 | "does not match name set to represent TRUE " | |
916 | "or FALSE: %s", | |
917 | ye), | |
918 | message ("Use -boolfalse and -booltrue to set the " | |
919 | "name of false and true boolean values."), | |
920 | uentry_whereDefined (e)); | |
921 | } | |
922 | } end_enumNameList_elements; | |
923 | } | |
924 | } | |
925 | ||
926 | if (usymtab_exists (n)) | |
927 | { | |
928 | usymId llm = usymtab_getId (n); | |
929 | uentry le = usymtab_getTypeEntry (llm); | |
930 | ||
931 | uentry_setDeclared (e, g_currentloc); | |
932 | uentry_setSref (e, sRef_makeGlobal (llm, uentry_getType (le), stateInfo_currentLoc ())); | |
933 | ||
934 | DPRINTF (("Here we are: %s / %s", | |
935 | n, context_getBoolName ())); | |
936 | ||
937 | if (uentry_isAbstractDatatype (le)) | |
938 | { | |
939 | ctype rrep = ctype_realType (rep); | |
940 | ||
941 | DPRINTF (("Abstract type: %s", uentry_unparseFull (le))); | |
942 | ||
943 | /* | |
944 | ** for abstract enum types, we need to fix the enum members: | |
945 | ** they should have the abstract type, not the rep type. | |
946 | */ | |
947 | ||
948 | if (ctype_isEnum (ctype_realType (rrep))) | |
949 | { | |
950 | ctype at = uentry_getAbstractType (le); | |
951 | enumNameList el = ctype_elist (rrep); | |
952 | ||
953 | enumNameList_elements (el, ye) | |
954 | { | |
955 | if (usymtab_existsGlob (ye)) | |
956 | { | |
957 | uentry ue = usymtab_lookupSafe (ye); | |
958 | ||
959 | llassert (uentry_isEitherConstant (ue)); | |
960 | llassertprint (ctype_match (uentry_getType (ue), rrep), | |
961 | ("Bad enum: %s / %s", | |
962 | uentry_unparse (ue), | |
963 | ctype_unparse (rrep))); | |
964 | ||
965 | uentry_setType (ue, at); | |
966 | } | |
967 | } end_enumNameList_elements; | |
968 | } | |
969 | ||
970 | if (uentry_isMutableDatatype (le)) | |
971 | { | |
972 | /* maybe more complicated if abstract and immutable ? */ | |
973 | ||
974 | if (!ctype_isRealPointer (rep) && !ctype_isRealAbstract (rep)) | |
975 | { | |
976 | voptgenerror | |
977 | (FLG_MUTREP, | |
978 | message ("Mutable abstract type %s declared without pointer " | |
979 | "indirection: %s (violates assignment semantics)", | |
980 | n, ctype_unparse (rep)), | |
981 | uentry_whereDefined (e)); | |
982 | ||
983 | uentry_setMutable (e); | |
984 | } | |
985 | } | |
986 | } | |
987 | } | |
988 | else | |
989 | { | |
990 | fileloc fl = uentry_whereDeclared (e); | |
991 | ||
992 | if (context_getFlag (FLG_LIKELYBOOL) | |
993 | && !context_getFlag (FLG_BOOLINT)) | |
994 | { | |
995 | if ((cstring_equalLit (n, "BOOL") | |
996 | || cstring_equalLit (n, "Bool") | |
997 | || cstring_equalLit (n, "bool") | |
998 | || cstring_equalLit (n, "boolean") | |
999 | || cstring_equalLit (n, "Boolean") | |
1000 | || cstring_equalLit (n, "BOOLEAN")) | |
1001 | && !(cstring_equal (n, context_getBoolName ()))) | |
1002 | { | |
1003 | if (context_setBoolName ()) { | |
1004 | voptgenerror | |
1005 | (FLG_LIKELYBOOL, | |
1006 | message ("Type %s is probably meant as a boolean type, but does " | |
1007 | "not match the boolean type name \"%s\".", | |
1008 | n, | |
1009 | context_getBoolName ()), | |
1010 | fl); | |
1011 | } else | |
1012 | voptgenerror | |
1013 | (FLG_LIKELYBOOL, | |
1014 | message ("Type %s is probably meant as a boolean type, " | |
1015 | "but the boolean type name is not set. " | |
1016 | "Use -booltype %s to set it.", | |
1017 | n, | |
1018 | n), | |
1019 | fl); | |
1020 | } | |
1021 | } | |
1022 | ||
1023 | if (!uentry_isStatic (e) | |
1024 | && !ctype_isFunction (uentry_getType (e)) | |
1025 | && !fileloc_isLib (fl) | |
1026 | && !fileloc_isImport (fl) | |
1027 | && fileloc_isHeader (fl)) | |
1028 | { | |
1029 | voptgenerror (FLG_EXPORTTYPE, | |
1030 | message ("Type exported, but not specified: %s\n", n), | |
1031 | fl); | |
1032 | } | |
1033 | } | |
1034 | ||
1035 | cstring_free (n); | |
1036 | } | |
1037 | ||
1038 | uentryList | |
1039 | fixUentryList (idDeclList tl, qtype q) | |
1040 | { | |
1041 | uentryList f = uentryList_new (); | |
1042 | ||
1043 | idDeclList_elements (tl, i) | |
1044 | { | |
1045 | if (idDecl_isDefined (i)) | |
1046 | { | |
1047 | uentry ue; | |
1048 | uentry old; | |
1049 | ctype rt; | |
1050 | ||
1051 | (void) idDecl_fixBase (i, q); | |
1052 | ||
1053 | /* | |
1054 | ** implicit annotations | |
1055 | */ | |
1056 | ||
1057 | (void) fixStructDecl (i); | |
1058 | ||
1059 | ue = uentry_makeIdVariable (i); | |
1060 | rt = ctype_realType (uentry_getType (ue)); | |
1061 | ||
1062 | /* | |
1063 | ** where is this here??? | |
1064 | ||
1065 | if (ctype_isArray (rt) || ctype_isSU (rt)) | |
1066 | { | |
1067 | sRef_setAllocated (uentry_getSref (ue), uentry_whereDefined (ue)); | |
1068 | } | |
1069 | ||
1070 | ** | |
1071 | */ | |
1072 | ||
1073 | if (uentry_isValid (old = uentryList_lookupField (f, uentry_rawName (ue)))) | |
1074 | { | |
1075 | if (optgenerror (FLG_SYNTAX, | |
1076 | message ("Field name reused: %s", uentry_rawName (ue)), | |
1077 | uentry_whereDefined (ue))) | |
1078 | { | |
1079 | llgenmsg (message ("Previous use of %s", uentry_rawName (ue)), | |
1080 | uentry_whereDefined (old)); | |
1081 | } | |
1082 | } | |
1083 | ||
1084 | f = uentryList_add (f, ue); | |
1085 | } | |
1086 | } end_idDeclList_elements; | |
1087 | ||
1088 | idDeclList_free (tl); | |
1089 | return (f); | |
1090 | } | |
1091 | ||
1092 | /* | |
1093 | ** This is a hack to support unnamed struct/union fields as done by | |
1094 | ** Microsoft VC++. It is not supported by the ANSI standard. | |
1095 | ** | |
1096 | ** The inner fields are added to the outer structure. This is meaningful | |
1097 | ** for nesting structs inside unions, but Splint does no related | |
1098 | ** checking. | |
1099 | */ | |
1100 | ||
1101 | uentryList | |
1102 | fixUnnamedDecl (qtype q) | |
1103 | { | |
1104 | ctype ct = ctype_realType (qtype_getType (q)); | |
1105 | ||
1106 | if (ctype_isStruct (ct) || ctype_isUnion (ct)) | |
1107 | { | |
1108 | return uentryList_single (uentry_makeUnnamedVariable (ct)); | |
1109 | } | |
1110 | else if (ctype_isEnum (ct)) | |
1111 | { | |
1112 | /* evans 2002-02-05: nothing to do for unnamed enum lists */ | |
1113 | return uentryList_undefined; | |
1114 | } | |
1115 | else | |
1116 | { | |
1117 | voptgenerror | |
1118 | (FLG_SYNTAX, | |
1119 | message ("Type name in field declarations: %s", qtype_unparse (q)), | |
1120 | g_currentloc); | |
1121 | } | |
1122 | ||
1123 | return uentryList_undefined; | |
1124 | } | |
1125 | ||
1126 | void setStorageClass (storageClassCode sc) | |
1127 | { | |
1128 | storageClass = sc; | |
1129 | } | |
1130 | ||
1131 | void | |
1132 | setProcessingIterVars (uentry iter) | |
1133 | { | |
1134 | s_processingIterVars = TRUE; | |
1135 | currentIter = iter; | |
1136 | saveIterParamNo = 0; | |
1137 | } | |
1138 | ||
1139 | void | |
1140 | setProcessingGlobalsList () | |
1141 | { | |
1142 | s_processingGlobals = TRUE; | |
1143 | fcnNoGlobals = FALSE; | |
1144 | } | |
1145 | ||
1146 | static bool ProcessingGlobMods = FALSE; | |
1147 | ||
1148 | void | |
1149 | setProcessingGlobMods () | |
1150 | { | |
1151 | ProcessingGlobMods = TRUE; | |
1152 | } | |
1153 | ||
1154 | void | |
1155 | clearProcessingGlobMods () | |
1156 | { | |
1157 | ProcessingGlobMods = FALSE; | |
1158 | } | |
1159 | ||
1160 | bool | |
1161 | isProcessingGlobMods () | |
1162 | { | |
1163 | return (ProcessingGlobMods); | |
1164 | } | |
1165 | ||
1166 | static void resetGlobals (void) | |
1167 | { | |
1168 | s_processingGlobals = FALSE; | |
1169 | fcnNoGlobals = FALSE; | |
1170 | } | |
1171 | ||
1172 | void | |
1173 | unsetProcessingGlobals () | |
1174 | { | |
1175 | s_processingGlobals = FALSE; | |
1176 | } | |
1177 | ||
1178 | void | |
1179 | setProcessingVars (/*@only@*/ qtype q) | |
1180 | { | |
1181 | s_processingVars = TRUE; | |
1182 | qtype_free (processingType); | |
1183 | processingType = q; | |
1184 | } | |
1185 | ||
1186 | static void | |
1187 | setGenericParamList (/*@dependent@*/ uentryList pm) | |
1188 | { | |
1189 | s_processingParams = TRUE; | |
1190 | saveParamList = pm; | |
1191 | } | |
1192 | ||
1193 | void | |
1194 | setProcessingTypedef (qtype q) | |
1195 | { | |
1196 | s_processingTypedef = TRUE; | |
1197 | ||
1198 | qtype_free (processingType); | |
1199 | processingType = q; | |
1200 | } | |
1201 | ||
1202 | void | |
1203 | unsetProcessingVars () | |
1204 | { | |
1205 | resetStorageClass (); | |
1206 | s_processingVars = FALSE; | |
1207 | } | |
1208 | ||
1209 | void | |
1210 | oldStyleDoneParams () | |
1211 | { | |
1212 | if (s_processingParams) | |
1213 | { | |
1214 | if (uentry_isInvalid (saveFunction)) | |
1215 | { | |
1216 | llbuglit ("unsetProcessingVars: no saved function\n"); | |
1217 | } | |
1218 | else | |
1219 | { | |
1220 | ctype ct = ctype_getReturnType (uentry_getType (saveFunction)); | |
1221 | uentryList params = uentryList_copy (saveParamList); | |
1222 | ctype ct2 = ctype_makeFunction (ct, params); | |
1223 | ||
1224 | uentry_setType (saveFunction, ct2); | |
1225 | s_processingParams = FALSE; | |
1226 | ||
1227 | oldStyleCompleteFunction (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_getReturnType (uentry_getType (saveFunction)); | |
1253 | ctype ct2; | |
1254 | ||
1255 | DPRINTF (("save function: %s", uentry_unparseFull (saveFunction))); | |
1256 | ||
1257 | uentryList_elements (saveParamList, current) | |
1258 | { | |
1259 | uentry_setType (current, ctype_int); /* all params are ints */ | |
1260 | } end_uentryList_elements; | |
1261 | ||
1262 | ct2 = ctype_makeParamsFunction (ct, uentryList_copy (saveParamList)); | |
1263 | ||
1264 | uentry_setType (saveFunction, ct2); | |
1265 | s_processingParams = FALSE; | |
1266 | ||
1267 | oldStyleDeclareFunction (saveFunction); | |
1268 | saveFunction = uentry_undefined; | |
1269 | } | |
1270 | } | |
1271 | ||
1272 | void clabstract_declareType (/*@only@*/ exprNodeList decls, /*@only@*/ warnClause warn) | |
1273 | { | |
1274 | llassert (s_processingTypedef); | |
1275 | ||
1276 | DPRINTF (("Declare type: %s", exprNodeList_unparse (decls))); | |
1277 | ||
1278 | if (warnClause_isDefined (warn)) | |
1279 | { | |
1280 | DPRINTF (("Has a warn clause!")); | |
1281 | DPRINTF (("Warn: %s", warnClause_unparse (warn))); | |
1282 | ||
1283 | exprNodeList_elements (decls, el) | |
1284 | { | |
1285 | uentry ue = exprNode_getUentry (el); | |
1286 | cstring uname = uentry_getName (ue); | |
1287 | ||
1288 | DPRINTF (("Entry: %s", exprNode_unparse (el))); | |
1289 | ||
1290 | /* | |
1291 | ** Need to lookup again to make sure we have the right one... | |
1292 | */ | |
1293 | ||
1294 | ue = usymtab_lookupExposeGlob (uname); | |
1295 | ||
1296 | llassert (uentry_isValid (ue)); | |
1297 | llassert (uentry_isDatatype (ue)); | |
1298 | ||
1299 | DPRINTF (("Warning for %s: %s", | |
1300 | uentry_unparse (ue), warnClause_unparse (warn))); | |
1301 | ||
1302 | uentry_addWarning (ue, warnClause_copy (warn)); | |
1303 | DPRINTF (("After add warning: %s", uentry_unparseFull (ue))); | |
1304 | cstring_free (uname); | |
1305 | } end_exprNodeList_elements; | |
1306 | } | |
1307 | ||
1308 | warnClause_free (warn); | |
1309 | exprNodeList_free (decls); | |
1310 | unsetProcessingTypedef (); | |
1311 | } | |
1312 | ||
1313 | void | |
1314 | unsetProcessingTypedef () | |
1315 | { | |
1316 | s_processingTypedef = FALSE; | |
1317 | } | |
1318 | ||
1319 | void checkConstant (qtype t, idDecl id) | |
1320 | { | |
1321 | uentry e; | |
1322 | ||
1323 | id = idDecl_fixBase (id, t); | |
1324 | e = uentry_makeIdConstant (id); | |
1325 | ||
1326 | reflectStorageClass (e); | |
1327 | resetStorageClass (); | |
1328 | ||
1329 | DPRINTF (("Constant: %s", uentry_unparseFull (e))); | |
1330 | usymtab_supGlobalEntry (e); | |
1331 | } | |
1332 | ||
1333 | void checkValueConstant (qtype t, idDecl id, exprNode e) | |
1334 | { | |
1335 | uentry ue; | |
1336 | ||
1337 | id = idDecl_fixBase (id, t); | |
1338 | ue = uentry_makeIdConstant (id); | |
1339 | reflectStorageClass (ue); | |
1340 | resetStorageClass (); | |
1341 | ||
1342 | if (exprNode_isDefined (e)) | |
1343 | { | |
1344 | if (!exprNode_matchType (uentry_getType (ue), e)) | |
1345 | { | |
1346 | (void) gentypeerror | |
1347 | (exprNode_getType (e), e, | |
1348 | uentry_getType (ue), exprNode_undefined, | |
1349 | message ("Constant %q initialized to type %t, expects %t: %s", | |
1350 | uentry_getName (ue), | |
1351 | exprNode_getType (e), | |
1352 | uentry_getType (ue), | |
1353 | exprNode_unparse (e)), | |
1354 | exprNode_loc (e)); | |
1355 | } | |
1356 | else | |
1357 | { | |
1358 | if (exprNode_hasValue (e)) | |
1359 | { | |
1360 | uentry_mergeConstantValue (ue, multiVal_copy (exprNode_getValue (e))); | |
1361 | } | |
1362 | else | |
1363 | { | |
1364 | DPRINTF (("No value: %s", exprNode_unparse (e))); | |
1365 | } | |
1366 | } | |
1367 | } | |
1368 | ||
1369 | DPRINTF (("Constant value: %s", uentry_unparseFull (ue))); | |
1370 | usymtab_supGlobalEntry (ue); | |
1371 | } | |
1372 | ||
1373 | static void processVariable (idDecl t) | |
1374 | { | |
1375 | uentry e; | |
1376 | ctype ct; | |
1377 | ||
1378 | ct = ctype_realType (idDecl_getCtype (t)); | |
1379 | ||
1380 | if (s_processingParams) | |
1381 | { | |
1382 | cstring id = idDecl_getName (t); | |
1383 | int paramno = uentryList_lookupRealName (saveParamList, id); | |
1384 | ||
1385 | if (paramno >= 0) | |
1386 | { | |
1387 | uentry cparam = uentryList_getN (saveParamList, paramno); | |
1388 | ||
1389 | DPRINTF (("Processing param: %s", uentry_unparseFull (cparam))); | |
1390 | uentry_setType (cparam, idDecl_getCtype (t)); | |
1391 | uentry_reflectQualifiers (cparam, idDecl_getQuals (t)); | |
1392 | uentry_setDeclaredOnly (cparam, context_getSaveLocation ()); | |
1393 | DPRINTF (("Processing param: %s", uentry_unparseFull (cparam))); | |
1394 | } | |
1395 | else | |
1396 | { | |
1397 | llfatalerrorLoc | |
1398 | (message ("Old style declaration uses unlisted parameter: %s", | |
1399 | id)); | |
1400 | } | |
1401 | } | |
1402 | else | |
1403 | { | |
1404 | fileloc loc; | |
1405 | ||
1406 | if (context_inIterDef ()) | |
1407 | { | |
1408 | cstring pname = makeParam (idDecl_observeId (t)); | |
1409 | uentry p = usymtab_lookupSafe (pname); | |
1410 | ||
1411 | cstring_free (pname); | |
1412 | ||
1413 | if (uentry_isYield (p)) | |
1414 | { | |
1415 | e = uentry_makeParam (t, sRef_getParam (uentry_getSref (p))); | |
1416 | uentry_checkYieldParam (p, e); | |
1417 | usymtab_supEntrySref (e); | |
1418 | return; | |
1419 | } | |
1420 | } | |
1421 | ||
1422 | if ((hasSpecialCode () || argsUsed) | |
1423 | && ctype_isFunction (idDecl_getCtype (t))) | |
1424 | { | |
1425 | e = uentry_makeIdFunction (t); | |
1426 | reflectSpecialCode (e); | |
1427 | reflectArgsUsed (e); | |
1428 | } | |
1429 | else | |
1430 | { | |
1431 | e = uentry_makeIdVariable (t); | |
1432 | } | |
1433 | ||
1434 | loc = uentry_whereDeclared (e); | |
1435 | ||
1436 | /* | |
1437 | if (context_inGlobalScope ()) | |
1438 | { | |
1439 | uentry_checkParams was here! | |
1440 | } | |
1441 | */ | |
1442 | ||
1443 | if (ctype_isFunction (uentry_getType (e))) | |
1444 | { | |
1445 | clabstract_prepareFunction (e); | |
1446 | } | |
1447 | ||
1448 | DPRINTF (("Superceding... %s", uentry_unparseFull (e))); | |
1449 | e = usymtab_supEntrySrefReturn (e); | |
1450 | DPRINTF (("After superceding... %s", uentry_unparseFull (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 | if (!context_inXHFile ()) | |
1467 | { | |
1468 | checkParamNames (e); | |
1469 | } | |
1470 | } | |
1471 | ||
1472 | if (uentry_isVar (e) && uentry_isCheckedUnknown (e)) | |
1473 | { | |
1474 | sRef sr = uentry_getSref (e); | |
1475 | ||
1476 | if (sRef_isLocalVar (sr)) | |
1477 | { | |
1478 | if (context_getFlag (FLG_IMPCHECKMODINTERNALS)) | |
1479 | { | |
1480 | uentry_setCheckMod (e); | |
1481 | } | |
1482 | else | |
1483 | { | |
1484 | uentry_setUnchecked (e); | |
1485 | } | |
1486 | } | |
1487 | else if (sRef_isFileStatic (sr)) | |
1488 | { | |
1489 | if (context_getFlag (FLG_IMPCHECKEDSTRICTSTATICS)) | |
1490 | { | |
1491 | uentry_setCheckedStrict (e); | |
1492 | } | |
1493 | else if (context_getFlag (FLG_IMPCHECKEDSTATICS)) | |
1494 | { | |
1495 | uentry_setChecked (e); | |
1496 | } | |
1497 | else if (context_getFlag (FLG_IMPCHECKMODSTATICS)) | |
1498 | { | |
1499 | uentry_setCheckMod (e); | |
1500 | } | |
1501 | else | |
1502 | { | |
1503 | ; | |
1504 | } | |
1505 | } | |
1506 | else /* real global */ | |
1507 | { | |
1508 | llassert (sRef_isRealGlobal (sr)); | |
1509 | ||
1510 | if (context_getFlag (FLG_IMPCHECKEDSTRICTGLOBALS)) | |
1511 | { | |
1512 | uentry_setCheckedStrict (e); | |
1513 | } | |
1514 | else if (context_getFlag (FLG_IMPCHECKEDGLOBALS)) | |
1515 | { | |
1516 | uentry_setChecked (e); | |
1517 | } | |
1518 | else if (context_getFlag (FLG_IMPCHECKMODGLOBALS)) | |
1519 | { | |
1520 | uentry_setCheckMod (e); | |
1521 | } | |
1522 | else | |
1523 | { | |
1524 | ; | |
1525 | } | |
1526 | } | |
1527 | } | |
1528 | } | |
1529 | } | |
1530 | ||
1531 | void processNamedDecl (idDecl t) | |
1532 | { | |
1533 | if (qtype_isUndefined (processingType)) | |
1534 | { | |
1535 | processingType = qtype_create (ctype_int); | |
1536 | t = idDecl_fixBase (t, processingType); | |
1537 | ||
1538 | voptgenerror (FLG_IMPTYPE, | |
1539 | message ("No type before declaration name (implicit int type): %q", | |
1540 | idDecl_unparse (t)), | |
1541 | g_currentloc); | |
1542 | } | |
1543 | else | |
1544 | { | |
1545 | t = idDecl_fixBase (t, processingType); | |
1546 | } | |
1547 | ||
1548 | DPRINTF (("Declare: %s", idDecl_unparse (t))); | |
1549 | ||
1550 | if (s_processingGlobals) | |
1551 | { | |
1552 | cstring id = idDecl_getName (t); | |
1553 | uentry ue = usymtab_lookupSafe (id); | |
1554 | ||
1555 | if (!uentry_isValid (ue)) | |
1556 | { | |
1557 | llerror (FLG_UNRECOG, | |
1558 | message ("Variable used in globals list is undeclared: %s", id)); | |
1559 | } | |
1560 | else | |
1561 | { | |
1562 | if (!ctype_match (uentry_getType (ue), idDecl_getCtype (t))) | |
1563 | { | |
1564 | voptgenerror | |
1565 | (FLG_INCONDEFS, | |
1566 | message ("Variable %s used in globals list declared %s, " | |
1567 | "but listed as %s", | |
1568 | id, ctype_unparse (uentry_getType (ue)), | |
1569 | ctype_unparse (idDecl_getCtype (t))), | |
1570 | g_currentloc); | |
1571 | } | |
1572 | else | |
1573 | { | |
1574 | sRef sr = sRef_copy (uentry_getSref (ue)); | |
1575 | reflectGlobalQualifiers (sr, idDecl_getQuals (t)); | |
1576 | } | |
1577 | } | |
1578 | } | |
1579 | else if (s_processingVars) | |
1580 | { | |
1581 | processVariable (t); | |
1582 | } | |
1583 | else if (s_processingTypedef) | |
1584 | { | |
1585 | ctype ct = idDecl_getCtype (t); | |
1586 | uentry e; | |
1587 | ||
1588 | DPRINTF (("Processing typedef: %s", ctype_unparse (ct))); | |
1589 | ||
1590 | e = uentry_makeIdDatatype (t); | |
1591 | ||
1592 | if (cstring_equal (idDecl_getName (t), context_getBoolName ())) { | |
1593 | ctype rt = ctype_realType (ct); | |
1594 | ||
1595 | if (ctype_isEnum (rt)) { | |
1596 | ; | |
1597 | } else { | |
1598 | if (!(ctype_isInt (rt) | |
1599 | || ctype_isUnknown (rt) | |
1600 | || ctype_isChar (rt))) { | |
1601 | (void) llgenerror | |
1602 | (FLG_BOOLTYPE, | |
1603 | message ("Boolean type %s defined using non-standard type %s (integral, char or enum type expected)", | |
1604 | context_getBoolName (), | |
1605 | ctype_unparse (ct)), | |
1606 | uentry_whereLast (e)); | |
1607 | } | |
1608 | ||
1609 | ct = ctype_bool; | |
1610 | uentry_setType (e, ct); | |
1611 | } | |
1612 | } | |
1613 | ||
1614 | reflectStorageClass (e); | |
1615 | checkTypeDecl (e, ct); | |
1616 | ||
1617 | e = usymtab_supReturnTypeEntry (e); | |
1618 | } | |
1619 | else | |
1620 | { | |
1621 | llparseerror (message ("Suspect missing struct or union keyword: %q", | |
1622 | idDecl_unparse (t))); | |
1623 | } | |
1624 | ||
1625 | } | |
1626 | ||
1627 | /* | |
1628 | ** moved from grammar | |
1629 | */ | |
1630 | ||
1631 | static idDecl fixStructDecl (/*@returned@*/ idDecl d) | |
1632 | { | |
1633 | if (ctype_isVisiblySharable (idDecl_getCtype (d)) | |
1634 | && context_getFlag (FLG_STRUCTIMPONLY)) | |
1635 | { | |
1636 | if (!qualList_hasAliasQualifier (idDecl_getQuals (d))) | |
1637 | { | |
1638 | if (qualList_hasExposureQualifier (idDecl_getQuals (d))) | |
1639 | { | |
1640 | idDecl_addQual (d, qual_createDependent ()); | |
1641 | } | |
1642 | else | |
1643 | { | |
1644 | idDecl_addQual (d, qual_createImpOnly ()); | |
1645 | } | |
1646 | } | |
1647 | } | |
1648 | ||
1649 | return d; | |
1650 | } | |
1651 | ||
1652 | ctype | |
1653 | declareUnnamedStruct (/*@only@*/ uentryList f) | |
1654 | { | |
1655 | DPRINTF (("Unnamed struct: %s", uentryList_unparse (f))); | |
1656 | ||
1657 | if (context_maybeSet (FLG_NUMSTRUCTFIELDS)) | |
1658 | { | |
1659 | int num = uentryList_size (f); | |
1660 | int max = context_getValue (FLG_NUMSTRUCTFIELDS); | |
1661 | ||
1662 | if (num > max) | |
1663 | { | |
1664 | voptgenerror | |
1665 | (FLG_NUMSTRUCTFIELDS, | |
1666 | message ("Structure declared with %d fields " | |
1667 | "(limit is set to %d)", | |
1668 | num, max), | |
1669 | g_currentloc); | |
1670 | } | |
1671 | } | |
1672 | ||
1673 | return (ctype_createUnnamedStruct (f)); | |
1674 | } | |
1675 | ||
1676 | ctype | |
1677 | declareUnnamedUnion (/*@only@*/ uentryList f) | |
1678 | { | |
1679 | DPRINTF (("Unnamed union: %s", uentryList_unparse (f))); | |
1680 | ||
1681 | if (context_maybeSet (FLG_NUMSTRUCTFIELDS)) | |
1682 | { | |
1683 | int num = uentryList_size (f); | |
1684 | int max = context_getValue (FLG_NUMSTRUCTFIELDS); | |
1685 | ||
1686 | if (num > max) | |
1687 | { | |
1688 | voptgenerror | |
1689 | (FLG_NUMSTRUCTFIELDS, | |
1690 | message ("Union declared with %d fields " | |
1691 | "(limit is set to %d)", | |
1692 | num, max), | |
1693 | g_currentloc); | |
1694 | } | |
1695 | } | |
1696 | ||
1697 | return (ctype_createUnnamedUnion (f)); | |
1698 | } | |
1699 | ||
1700 | ctype declareStruct (cstring id, /*@only@*/ uentryList f) | |
1701 | { | |
1702 | ctype ct; | |
1703 | uentry ue; | |
1704 | int num = uentryList_size (f); | |
1705 | ||
1706 | DPRINTF (("Declare struct: %s / %s [%d]", id, uentryList_unparse (f), | |
1707 | uentryList_size (f))); | |
1708 | ||
1709 | ct = ctype_createStruct (cstring_copy (id), f); | |
1710 | ||
1711 | DPRINTF (("Ctype: %s", ctype_unparse (ct))); | |
1712 | ||
1713 | ue = uentry_makeStructTagLoc (id, ct); | |
1714 | ||
1715 | DPRINTF (("ue: %s", uentry_unparseFull (ue))); | |
1716 | ||
1717 | if (context_maybeSet (FLG_NUMSTRUCTFIELDS)) | |
1718 | { | |
1719 | int max = context_getValue (FLG_NUMSTRUCTFIELDS); | |
1720 | ||
1721 | if (num > max) | |
1722 | { | |
1723 | voptgenerror | |
1724 | (FLG_NUMSTRUCTFIELDS, | |
1725 | message ("Structure %q declared with %d fields " | |
1726 | "(limit is set to %d)", | |
1727 | uentry_getName (ue), num, max), | |
1728 | uentry_whereLast (ue)); | |
1729 | } | |
1730 | } | |
1731 | ||
1732 | return (usymtab_supTypeEntry (ue)); | |
1733 | } | |
1734 | ||
1735 | ctype declareUnion (cstring id, uentryList f) | |
1736 | { | |
1737 | ctype ct; | |
1738 | uentry ue; | |
1739 | int num = uentryList_size (f); | |
1740 | ||
1741 | ct = ctype_createUnion (cstring_copy (id), f); | |
1742 | ue = uentry_makeUnionTagLoc (id, ct); | |
1743 | ||
1744 | if (context_maybeSet (FLG_NUMSTRUCTFIELDS)) | |
1745 | { | |
1746 | int max = context_getValue (FLG_NUMSTRUCTFIELDS); | |
1747 | ||
1748 | if (num > max) | |
1749 | { | |
1750 | voptgenerror | |
1751 | (FLG_NUMSTRUCTFIELDS, | |
1752 | message ("Union %q declared with %d fields " | |
1753 | "(limit is set to %d)", | |
1754 | uentry_getName (ue), num, max), | |
1755 | uentry_whereLast (ue)); | |
1756 | } | |
1757 | } | |
1758 | ||
1759 | return (usymtab_supTypeEntry (ue)); | |
1760 | } | |
1761 | ||
1762 | ctype handleStruct (/*@only@*/ cstring id) | |
1763 | { | |
1764 | if (usymtab_existsStructTag (id)) | |
1765 | { | |
1766 | ctype ct = uentry_getAbstractType (usymtab_lookupStructTag (id)); | |
1767 | ||
1768 | cstring_free (id); | |
1769 | return ct; | |
1770 | } | |
1771 | else | |
1772 | { | |
1773 | return (ctype_createForwardStruct (id)); | |
1774 | } | |
1775 | } | |
1776 | ||
1777 | ctype handleUnion (/*@only@*/ cstring id) | |
1778 | { | |
1779 | if (usymtab_existsUnionTag (id)) | |
1780 | { | |
1781 | ctype ret = uentry_getAbstractType (usymtab_lookupUnionTag (id)); | |
1782 | cstring_free (id); | |
1783 | return (ret); | |
1784 | } | |
1785 | else | |
1786 | { | |
1787 | return (ctype_createForwardUnion (id)); | |
1788 | } | |
1789 | } | |
1790 | ||
1791 | ctype | |
1792 | handleEnum (cstring id) | |
1793 | { | |
1794 | if (usymtab_existsEnumTag (id)) | |
1795 | { | |
1796 | ctype ret = uentry_getAbstractType (usymtab_lookupEnumTag (id)); | |
1797 | cstring_free (id); | |
1798 | return ret; | |
1799 | } | |
1800 | else | |
1801 | { | |
1802 | return (declareEnum (id, enumNameList_new ())); | |
1803 | } | |
1804 | } | |
1805 | ||
1806 | bool processingIterVars (void) | |
1807 | { | |
1808 | return s_processingIterVars; | |
1809 | } | |
1810 | ||
1811 | uentry getCurrentIter (void) | |
1812 | { | |
1813 | return currentIter; | |
1814 | } | |
1815 | ||
1816 | static bool flipOldStyle = FALSE; | |
1817 | static bool flipNewStyle = TRUE; | |
1818 | ||
1819 | void setFlipOldStyle () { flipOldStyle = TRUE; } | |
1820 | bool isFlipOldStyle () { return flipOldStyle; } | |
1821 | bool isNewStyle () { return flipNewStyle; } | |
1822 | void setNewStyle () { flipNewStyle = TRUE; } | |
1823 | ||
1824 | /*@dependent@*/ uentryList handleParamIdList (/*@dependent@*/ uentryList params) | |
1825 | { | |
1826 | int paramno = 0; | |
1827 | ||
1828 | /* | |
1829 | ** this is a really YUCKY hack to handle old style | |
1830 | ** declarations. | |
1831 | */ | |
1832 | ||
1833 | voptgenerror (FLG_OLDSTYLE, | |
1834 | cstring_makeLiteral ("Old style function declaration"), | |
1835 | g_currentloc); | |
1836 | ||
1837 | DPRINTF (("Handle old style params: %s", uentryList_unparseFull (params))); | |
1838 | ||
1839 | uentryList_elements (params, current) | |
1840 | { | |
1841 | uentry_setParam (current); | |
1842 | uentry_setSref (current, sRef_makeParam (paramno, ctype_unknown, stateInfo_makeLoc (uentry_whereLast (current)))); | |
1843 | paramno++; | |
1844 | } end_uentryList_elements; | |
1845 | ||
1846 | setGenericParamList (params); | |
1847 | g_expectingTypeName = TRUE; | |
1848 | ||
1849 | return params; | |
1850 | } | |
1851 | ||
1852 | /*@dependent@*/ uentryList handleParamTypeList (/*@returned@*/ uentryList params) | |
1853 | { | |
1854 | if (flipOldStyle) | |
1855 | { | |
1856 | uentryList_fixMissingNames (params); | |
1857 | ||
1858 | voptgenerror (FLG_OLDSTYLE, | |
1859 | cstring_makeLiteral ("Old style function declaration."), | |
1860 | g_currentloc); | |
1861 | ||
1862 | setGenericParamList (params); | |
1863 | flipOldStyle = FALSE; | |
1864 | g_expectingTypeName = TRUE; | |
1865 | } | |
1866 | ||
1867 | return (params); | |
1868 | } | |
1869 | ||
1870 | void | |
1871 | doVaDcl () | |
1872 | { | |
1873 | ctype c = ctype_unknown; | |
1874 | cstring id = cstring_makeLiteral ("va_alist"); | |
1875 | uentry e; | |
1876 | ||
1877 | if (s_processingParams) | |
1878 | { | |
1879 | int i = uentryList_lookupRealName (saveParamList, id); | |
1880 | ||
1881 | if (i >= 0) | |
1882 | { | |
1883 | fileloc loc = context_getSaveLocation (); | |
1884 | e = uentry_makeVariableSrefParam (id, c, loc, sRef_makeParam (i, c, stateInfo_makeLoc (loc))); | |
1885 | } | |
1886 | else | |
1887 | { | |
1888 | e = uentry_undefined; /* suppress gcc message */ | |
1889 | llfatalerrorLoc (cstring_makeLiteral ("va_dcl used without va_alist")); | |
1890 | } | |
1891 | } | |
1892 | else | |
1893 | { | |
1894 | llerror (FLG_SYNTAX, cstring_makeLiteral ("va_dcl used outside of function declaration")); | |
1895 | e = uentry_makeVariableLoc (id, c); | |
1896 | } | |
1897 | ||
1898 | cstring_free (id); | |
1899 | uentry_setUsed (e, g_currentloc); | |
1900 | usymtab_supEntrySref (e); | |
1901 | } | |
1902 | ||
1903 | /*@exposed@*/ sRef modListPointer (/*@exposed@*/ sRef s) | |
1904 | { | |
1905 | ctype ct = sRef_getType (s); | |
1906 | ctype rt = ctype_realType (ct); | |
1907 | ||
1908 | if (ctype_isAP (rt)) | |
1909 | { | |
1910 | if (context_inHeader () && ctype_isAbstract (ct)) | |
1911 | { | |
1912 | voptgenerror | |
1913 | (FLG_ABSTRACT, | |
1914 | message | |
1915 | ("Modifies clause in header file dereferences abstract " | |
1916 | "type %s (interface modifies clause should not depend " | |
1917 | "on or expose type representation): %q", | |
1918 | ctype_unparse (ct), | |
1919 | sRef_unparse (s)), | |
1920 | g_currentloc); | |
1921 | } | |
1922 | ||
1923 | return (sRef_constructPointer (s)); | |
1924 | } | |
1925 | else | |
1926 | { | |
1927 | if (ctype_isKnown (rt)) | |
1928 | { | |
1929 | voptgenerror | |
1930 | (FLG_TYPE, | |
1931 | message ("Implementation modifies clause dereferences non-pointer (type %s): %q", | |
1932 | ctype_unparse (rt), | |
1933 | sRef_unparse (s)), | |
1934 | g_currentloc); | |
1935 | } | |
1936 | ||
1937 | return s; | |
1938 | } | |
1939 | } | |
1940 | ||
1941 | /*@exposed@*/ sRef modListFieldAccess (sRef s, cstring f) | |
1942 | { | |
1943 | ctype ct = sRef_getType (s); | |
1944 | ctype rt = ctype_realType (ct); | |
1945 | ||
1946 | if (ctype_isStructorUnion (rt)) | |
1947 | { | |
1948 | uentry tf = uentryList_lookupField (ctype_getFields (rt), f); | |
1949 | ||
1950 | if (uentry_isUndefined (tf)) | |
1951 | { | |
1952 | voptgenerror (FLG_TYPE, | |
1953 | message ("Modifies list accesses non-existent " | |
1954 | "field %s of %t: %q", f, ct, | |
1955 | sRef_unparse (s)), | |
1956 | g_currentloc); | |
1957 | ||
1958 | cstring_free (f); | |
1959 | return sRef_undefined; | |
1960 | } | |
1961 | else | |
1962 | { | |
1963 | if (ctype_isAbstract (ct) && context_inHeader ()) | |
1964 | { | |
1965 | voptgenerror | |
1966 | (FLG_ABSTRACT, | |
1967 | message | |
1968 | ("Modifies clause in header file accesses abstract " | |
1969 | "type %s (interface modifies clause should not depend " | |
1970 | "on or expose type representation): %q", | |
1971 | ctype_unparse (ct), | |
1972 | sRef_unparse (s)), | |
1973 | g_currentloc); | |
1974 | } | |
1975 | } | |
1976 | ||
1977 | cstring_markOwned (f); | |
1978 | return (sRef_makeField (s, f)); | |
1979 | } | |
1980 | else | |
1981 | { | |
1982 | voptgenerror | |
1983 | (FLG_TYPE, | |
1984 | message ("Modifies clause dereferences non-pointer (type %s): %q", | |
1985 | ctype_unparse (rt), | |
1986 | sRef_unparse (s)), | |
1987 | g_currentloc); | |
1988 | ||
1989 | cstring_free (f); | |
1990 | return s; | |
1991 | } | |
1992 | } | |
1993 | ||
1994 | /*@dependent@*/ sRef clabstract_unrecognizedGlobal (cstring s) | |
1995 | { | |
1996 | if (cstring_equalLit (s, "nothing")) | |
1997 | { | |
1998 | return sRef_makeNothing (); | |
1999 | } | |
2000 | else if (cstring_equalLit (s, "internalState")) | |
2001 | { | |
2002 | return sRef_makeInternalState (); | |
2003 | } | |
2004 | else if (cstring_equalLit (s, "fileSystem") | |
2005 | || cstring_equalLit (s, "systemState")) | |
2006 | { | |
2007 | return sRef_makeSystemState (); | |
2008 | } | |
2009 | else | |
2010 | { | |
2011 | voptgenerror | |
2012 | (FLG_UNRECOG, | |
2013 | message ("Unrecognized identifier in globals list: %s", s), | |
2014 | g_currentloc); | |
2015 | ||
2016 | return sRef_undefined; | |
2017 | } | |
2018 | } | |
2019 | ||
2020 | /*@exposed@*/ sRef modListArrowAccess (sRef s, cstring f) | |
2021 | { | |
2022 | ctype ct = sRef_getType (s); | |
2023 | ctype rt = ctype_realType (ct); | |
2024 | ||
2025 | if (ctype_isRealPointer (rt)) | |
2026 | { | |
2027 | ctype b = ctype_baseArrayPtr (rt); | |
2028 | ctype rb = ctype_realType (b); | |
2029 | ||
2030 | if (ctype_isStructorUnion (rb)) | |
2031 | { | |
2032 | uentry tf = uentryList_lookupField (ctype_getFields (rb), f); | |
2033 | ||
2034 | if (uentry_isUndefined (tf)) | |
2035 | { | |
2036 | voptgenerror (FLG_TYPE, | |
2037 | message ("Modifies list arrow accesses non-existent " | |
2038 | "field %s of %t: %q", f, b, | |
2039 | sRef_unparse (s)), | |
2040 | g_currentloc); | |
2041 | ||
2042 | cstring_free (f); | |
2043 | return sRef_undefined; | |
2044 | } | |
2045 | else | |
2046 | { | |
2047 | if (context_inHeader ()) | |
2048 | { | |
2049 | if (ctype_isAbstract (b)) | |
2050 | { | |
2051 | voptgenerror | |
2052 | (FLG_ABSTRACT, | |
2053 | message | |
2054 | ("Modifies clause in header file arrow accesses abstract " | |
2055 | "type %s (interface modifies clause should not depend " | |
2056 | "on or expose type representation): %q", | |
2057 | ctype_unparse (b), | |
2058 | sRef_unparse (s)), | |
2059 | g_currentloc); | |
2060 | } | |
2061 | } | |
2062 | else | |
2063 | { | |
2064 | if (ctype_isAbstract (rt)) | |
2065 | { | |
2066 | voptgenerror | |
2067 | (FLG_ABSTRACT, | |
2068 | message | |
2069 | ("Modifies clause arrow accesses inaccessible abstract " | |
2070 | "type %s (interface modifies clause should not depend " | |
2071 | "on or expose type representation): %q", | |
2072 | ctype_unparse (rt), | |
2073 | sRef_unparse (s)), | |
2074 | g_currentloc); | |
2075 | } | |
2076 | } | |
2077 | } | |
2078 | ||
2079 | cstring_markOwned (f); | |
2080 | return (sRef_makeArrow (s, f)); | |
2081 | } | |
2082 | else | |
2083 | { | |
2084 | voptgenerror | |
2085 | (FLG_TYPE, | |
2086 | message ("Modifies clause arrow accesses pointer to " | |
2087 | "non-structure (type %s): %q", | |
2088 | ctype_unparse (rt), | |
2089 | sRef_unparse (s)), | |
2090 | g_currentloc); | |
2091 | } | |
2092 | } | |
2093 | else | |
2094 | { | |
2095 | voptgenerror | |
2096 | (FLG_TYPE, | |
2097 | message ("Modifies clause arrow accesses non-pointer (type %s): %q", | |
2098 | ctype_unparse (rt), | |
2099 | sRef_unparse (s)), | |
2100 | g_currentloc); | |
2101 | } | |
2102 | ||
2103 | cstring_free (f); | |
2104 | return s; | |
2105 | } | |
2106 | ||
2107 | sRef checkStateClausesId (uentry ue) | |
2108 | { | |
2109 | cstring s = uentry_rawName (ue); | |
2110 | ||
2111 | if (sRef_isFileOrGlobalScope (uentry_getSref (ue))) | |
2112 | { | |
2113 | voptgenerror | |
2114 | (FLG_COMMENTERROR, | |
2115 | message ("Global variable %s used state clause. (Global variables " | |
2116 | "are not recognized in state clauses. If there is " | |
2117 | "sufficient interest in support for this, it may be " | |
2118 | "added to a future release. Send mail to " | |
2119 | "info@splint.org.)", | |
2120 | s), | |
2121 | g_currentloc); | |
2122 | ||
2123 | return sRef_undefined; | |
2124 | } | |
2125 | else | |
2126 | { | |
2127 | if (cstring_equalLit (s, "result")) | |
2128 | { | |
2129 | if (optgenerror | |
2130 | (FLG_SYNTAX, | |
2131 | message ("Special clause list uses %s which is a variable and has special " | |
2132 | "meaning in a modifies list. (Special meaning assumed.)", s), | |
2133 | g_currentloc)) | |
2134 | { | |
2135 | uentry_showWhereDeclared (ue); | |
2136 | } | |
2137 | } | |
2138 | ||
2139 | return uentry_getSref (ue); | |
2140 | } | |
2141 | } | |
2142 | /*drl:1/19/2001 | |
2143 | oops to 1/8/2000 | |
2144 | date is wronge .. | |
2145 | don;t know what the real date is... | |
2146 | ||
2147 | */ | |
2148 | ||
2149 | /*drl | |
2150 | added 1/8/2000 | |
2151 | based on checkSpecClausesId | |
2152 | called by grammar | |
2153 | */ | |
2154 | ||
2155 | sRef checkbufferConstraintClausesId (uentry ue) | |
2156 | { | |
2157 | cstring s = uentry_rawName (ue); | |
2158 | ||
2159 | if (cstring_equalLit (s, "result")) | |
2160 | { | |
2161 | if (optgenerror | |
2162 | (FLG_SYNTAX, | |
2163 | message ("Function clause list uses %s which is a variable and has special " | |
2164 | "meaning in a modifies list. (Special meaning assumed.)", s), | |
2165 | g_currentloc)) | |
2166 | { | |
2167 | uentry_showWhereDeclared (ue); | |
2168 | } | |
2169 | } | |
2170 | ||
2171 | DPRINTF (("constrant id: %s", uentry_unparseFull (ue))); | |
2172 | return sRef_saveCopy (uentry_getSref (ue)); /*@i523 why the saveCopy? */ | |
2173 | } | |
2174 | ||
2175 | void checkModifiesId (uentry ue) | |
2176 | { | |
2177 | cstring s = uentry_rawName (ue); | |
2178 | ||
2179 | if (cstring_equalLit (s, "nothing") | |
2180 | || cstring_equalLit (s, "internalState") | |
2181 | || cstring_equalLit (s, "systemState") | |
2182 | || (cstring_equalLit (s, "fileSystem"))) | |
2183 | { | |
2184 | if (optgenerror | |
2185 | (FLG_SYNTAX, | |
2186 | message ("Modifies list uses %s which is a variable and has special " | |
2187 | "meaning in a modifies list. (Special meaning assumed.)", s), | |
2188 | g_currentloc)) | |
2189 | { | |
2190 | uentry_showWhereDeclared (ue); | |
2191 | } | |
2192 | } | |
2193 | } | |
2194 | ||
2195 | /*@exposed@*/ sRef fixModifiesId (cstring s) | |
2196 | { | |
2197 | sRef ret; | |
2198 | cstring pname = makeParam (s); | |
2199 | uentry ue = usymtab_lookupSafe (pname); | |
2200 | ||
2201 | cstring_free (pname); | |
2202 | ||
2203 | if (cstring_equalLit (s, "nothing")) | |
2204 | { | |
2205 | ret = sRef_makeNothing (); | |
2206 | } | |
2207 | else if (cstring_equalLit (s, "internalState")) | |
2208 | { | |
2209 | ret = sRef_makeInternalState (); | |
2210 | } | |
2211 | else if (cstring_equalLit (s, "fileSystem") | |
2212 | || cstring_equalLit (s, "systemState")) | |
2213 | { | |
2214 | ret = sRef_makeSystemState (); | |
2215 | } | |
2216 | else | |
2217 | { | |
2218 | ret = sRef_undefined; | |
2219 | } | |
2220 | ||
2221 | if (sRef_isValid (ret)) | |
2222 | { | |
2223 | if (uentry_isValid (ue)) | |
2224 | { | |
2225 | voptgenerror | |
2226 | (FLG_SYNTAX, | |
2227 | message ("Modifies list uses %s which is a parameter and has special " | |
2228 | "meaning in a modifies list. (Special meaning assumed.)", s), | |
2229 | g_currentloc); | |
2230 | } | |
2231 | } | |
2232 | else | |
2233 | { | |
2234 | if (uentry_isValid (ue)) | |
2235 | { | |
2236 | ret = uentry_getSref (ue); | |
2237 | } | |
2238 | else | |
2239 | { | |
2240 | fileloc loc = fileloc_decColumn (g_currentloc, size_toInt (cstring_length (s))); | |
2241 | ret = sRef_undefined; | |
2242 | ||
2243 | voptgenerror | |
2244 | (FLG_UNRECOG, | |
2245 | message ("Unrecognized identifier in modifies comment: %s", s), | |
2246 | loc); | |
2247 | ||
2248 | fileloc_free (loc); | |
2249 | } | |
2250 | } | |
2251 | ||
2252 | return ret; | |
2253 | } | |
2254 | ||
2255 | sRef fixStateClausesId (cstring s) | |
2256 | { | |
2257 | sRef ret; | |
2258 | cstring pname = makeParam (s); | |
2259 | uentry ue = usymtab_lookupSafe (pname); | |
2260 | ||
2261 | cstring_free (pname); | |
2262 | ||
2263 | if (cstring_equalLit (s, "result")) | |
2264 | { | |
2265 | ret = sRef_makeResult (ctype_unknown); | |
2266 | } | |
2267 | else | |
2268 | { | |
2269 | ret = sRef_undefined; | |
2270 | } | |
2271 | ||
2272 | if (sRef_isValid (ret)) | |
2273 | { | |
2274 | if (uentry_isValid (ue)) | |
2275 | { | |
2276 | voptgenerror | |
2277 | (FLG_SYNTAX, | |
2278 | message ("Function clause uses %s which is a parameter and has special " | |
2279 | "meaning in a function clause. (Special meaning assumed.)", s), | |
2280 | g_currentloc); | |
2281 | } | |
2282 | } | |
2283 | else | |
2284 | { | |
2285 | if (uentry_isValid (ue)) | |
2286 | { | |
2287 | ret = uentry_getSref (ue); | |
2288 | ||
2289 | if (sRef_isFileOrGlobalScope (ret)) | |
2290 | { | |
2291 | voptgenerror | |
2292 | (FLG_SYNTAX, | |
2293 | message ("Global variable %s used in function clause. (Global variables " | |
2294 | "are not recognized in function clauses. If there is " | |
2295 | "sufficient interest in support for this, it may be " | |
2296 | "added to a future release. Send mail to " | |
2297 | "info@splint.org.)", | |
2298 | s), | |
2299 | g_currentloc); | |
2300 | ||
2301 | ret = sRef_undefined; | |
2302 | } | |
2303 | } | |
2304 | else | |
2305 | { | |
2306 | /*@i222@*/ | |
2307 | /*drl handle structure invariant */ | |
2308 | ||
2309 | /*@i222@*/ | |
2310 | /*check that we're in a structure */ | |
2311 | # if 0\r | |
2312 | /*@unused@*/ uentryList ueL; | |
2313 | /*@unused@*/ uentry ue2; | |
2314 | /*@unused@*/ ctype ct;\r | |
2315 | # endif | |
2316 | fileloc loc = fileloc_decColumn (g_currentloc, size_toInt (cstring_length (s))); | |
2317 | ret = sRef_undefined; | |
2318 | # if 0 | |
2319 | /*drl commenting this out for now | |
2320 | ct = context_getLastStruct ( ct ); | |
2321 | ||
2322 | llassert( ctype_isStruct(ct) ); | |
2323 | ||
2324 | ueL = ctype_getFields (ct); | |
2325 | ||
2326 | ue2 = uentryList_lookupField (ueL, s); | |
2327 | ||
2328 | if (!uentry_isUndefined(ue2) ) | |
2329 | { | |
2330 | ret = uentry_getSref(ue2); | |
2331 | ||
2332 | DPRINTF(( | |
2333 | message("Got field in structure in the annotation constraint: %s (or sref: %s)", s, sRef_unparse(ret) ) | |
2334 | )); | |
2335 | ||
2336 | return ret; | |
2337 | } | |
2338 | */\r | |
2339 | # endif\r | |
2340 | ||
2341 | voptgenerror | |
2342 | (FLG_UNRECOG, | |
2343 | message ("Unrecognized identifier in function clause: %s", s), | |
2344 | loc); | |
2345 | ||
2346 | fileloc_free (loc); | |
2347 | } | |
2348 | } | |
2349 | ||
2350 | return ret; | |
2351 | } | |
2352 | ||
2353 | sRef modListArrayFetch (/*@exposed@*/ sRef s, /*@unused@*/ sRef mexp) | |
2354 | { | |
2355 | ctype ct = sRef_getType (s); | |
2356 | ctype rt = ctype_realType (ct); | |
2357 | ||
2358 | if (ctype_isAP (rt)) | |
2359 | { | |
2360 | if (context_inHeader () && ctype_isAbstract (ct)) | |
2361 | { | |
2362 | voptgenerror | |
2363 | (FLG_ABSTRACT, | |
2364 | message | |
2365 | ("Modifies clause in header file indexes abstract " | |
2366 | "type %s (interface modifies clause should not depend " | |
2367 | "on or expose type representation): %q", | |
2368 | ctype_unparse (ct), | |
2369 | sRef_unparse (s)), | |
2370 | g_currentloc); | |
2371 | } | |
2372 | ||
2373 | return (sRef_makeAnyArrayFetch (s)); | |
2374 | } | |
2375 | else | |
2376 | { | |
2377 | voptgenerror | |
2378 | (FLG_TYPE, | |
2379 | message | |
2380 | ("Implementation modifies clause uses array fetch on non-array (type %s): %q", | |
2381 | ctype_unparse (ct), sRef_unparse (s)), | |
2382 | g_currentloc); | |
2383 | return s; | |
2384 | } | |
2385 | } | |
2386 | ||
2387 | static void clabstract_prepareFunction (uentry e) | |
2388 | { | |
2389 | uentry_checkParams (e); | |
2390 | DPRINTF (("After prepare: %s", uentry_unparseFull (e))); | |
2391 | } | |
2392 | ||
2393 | sRef clabstract_checkGlobal (exprNode e) | |
2394 | { | |
2395 | sRef s; | |
2396 | ||
2397 | // drl 04-19-2002 comment this out for now | |
2398 | // parse chanes cause this to fail.. | |
2399 | //llassert (exprNode_isInitializer (e)); | |
2400 | ||
2401 | s = exprNode_getSref (e); | |
2402 | DPRINTF (("Initializer: %s -> %s", exprNode_unparse (e), sRef_unparse (s))); | |
2403 | ||
2404 | exprNode_free (e); | |
2405 | return sRef_copy (s); | |
2406 | } |