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616915dd | 1 | /* |
11db3170 | 2 | ** Splint - annotation-assisted static program checker |
77d37419 | 3 | ** Copyright (C) 1994-2002 University of Virginia, |
616915dd | 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 | ** | |
155af98d | 20 | ** For information on splint: info@splint.org |
21 | ** To report a bug: splint-bug@splint.org | |
11db3170 | 22 | ** For more information: http://www.splint.org |
616915dd | 23 | */ |
24 | /* | |
25 | ** clabstract.c | |
26 | ** | |
27 | ** ASTs for C grammar | |
28 | ** | |
29 | */ | |
30 | ||
1b8ae690 | 31 | # include "splintMacros.nf" |
616915dd | 32 | # include "llbasic.h" |
33 | # include "cgrammar.h" | |
616915dd | 34 | # include "usymtab_interface.h" |
616915dd | 35 | |
36 | # include "structNames.h" | |
37 | # include "nameChecks.h" | |
38 | ||
39 | # ifdef SANITIZER | |
40 | # include "sgrammar_tokens.h" | |
41 | # else | |
42 | # include "cgrammar_tokens.h" | |
43 | # endif | |
44 | ||
45 | /* | |
46 | ** Lots of variables are needed because of interactions with the | |
47 | ** parser. This is easier than restructuring the grammar so the | |
48 | ** right values are available in the right place. | |
49 | */ | |
50 | ||
b7b694d6 | 51 | /*drl*/ |
52 | static /*@only@*/ constraintList implicitFcnConstraints = NULL; | |
616915dd | 53 | |
28bf4b0b | 54 | static void clabstract_prepareFunction (uentry p_e) /*@modifies p_e@*/ ; |
616915dd | 55 | static bool fcnNoGlobals = FALSE; |
01a8227e | 56 | static void processVariable (/*@temp@*/ idDecl p_t) /*@modifies internalState@*/ ; |
57 | ||
58 | static bool s_processingVars = FALSE; | |
59 | static bool s_processingParams = FALSE; | |
60 | static bool s_processingGlobals = FALSE; | |
61 | static bool s_processingTypedef = FALSE; | |
62 | static bool s_processingIterVars = FALSE; | |
616915dd | 63 | static /*@only@*/ qtype processingType = qtype_undefined; |
64 | static uentry currentIter = uentry_undefined; | |
616915dd | 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); | |
28bf4b0b | 74 | static /*@null@*/ qual specialFunctionCode; |
616915dd | 75 | static bool argsUsed = FALSE; |
76 | ||
28bf4b0b | 77 | extern void clabstract_initMod () |
78 | { | |
79 | specialFunctionCode = qual_createUnknown (); | |
80 | DPRINTF (("Initialized: %s", qual_unparse (specialFunctionCode))); | |
81 | } | |
82 | ||
616915dd | 83 | static bool hasSpecialCode (void) |
84 | { | |
28bf4b0b | 85 | return (!qual_isUnknown (specialFunctionCode)); |
616915dd | 86 | } |
87 | ||
88 | extern void setArgsUsed (void) | |
89 | { | |
90 | if (argsUsed) | |
91 | { | |
92 | voptgenerror | |
93 | (FLG_SYNTAX, | |
94 | cstring_makeLiteral ("Multiple ARGSUSED comments for one function"), | |
95 | g_currentloc); | |
96 | } | |
97 | ||
98 | argsUsed = TRUE; | |
99 | } | |
100 | ||
101 | static void reflectArgsUsed (uentry ue) | |
102 | { | |
103 | if (argsUsed) | |
104 | { | |
105 | if (uentry_isFunction (ue)) | |
106 | { | |
107 | uentryList params = uentry_getParams (ue); | |
108 | ||
109 | uentryList_elements (params, el) | |
110 | { | |
111 | uentry_setUsed (el, fileloc_undefined); | |
112 | } end_uentryList_elements ; | |
113 | } | |
114 | ||
115 | argsUsed = FALSE; | |
116 | } | |
117 | } | |
118 | ||
119 | extern void setSpecialFunction (qual qu) | |
120 | { | |
28bf4b0b | 121 | if (!qual_isUnknown (specialFunctionCode)) |
616915dd | 122 | { |
123 | voptgenerror (FLG_SYNTAX, | |
124 | message ("Multiple special function codes: %s, %s " | |
125 | "(first code is ignored)", | |
126 | qual_unparse (specialFunctionCode), | |
127 | qual_unparse (qu)), | |
128 | g_currentloc); | |
129 | } | |
130 | ||
131 | specialFunctionCode = qu; | |
132 | } | |
133 | ||
134 | static void reflectSpecialCode (uentry ue) | |
135 | { | |
28bf4b0b | 136 | if (qual_isUnknown (specialFunctionCode)) { |
137 | ; | |
138 | } else if (qual_isPrintfLike (specialFunctionCode)) { | |
139 | uentry_setPrintfLike (ue); | |
140 | } else if (qual_isScanfLike (specialFunctionCode)) { | |
141 | uentry_setScanfLike (ue); | |
142 | } else if (qual_isMessageLike (specialFunctionCode)) { | |
143 | uentry_setMessageLike (ue); | |
144 | } else { | |
145 | BADBRANCH; | |
146 | } | |
616915dd | 147 | |
28bf4b0b | 148 | specialFunctionCode = qual_createUnknown (); |
616915dd | 149 | } |
150 | ||
151 | static void resetStorageClass (void) | |
152 | { | |
153 | qtype_free (processingType); | |
154 | processingType = qtype_undefined; | |
155 | storageClass = SCNONE; | |
156 | } | |
157 | ||
616915dd | 158 | static void reflectStorageClass (uentry u) |
159 | { | |
160 | if (storageClass == SCSTATIC) | |
161 | { | |
162 | uentry_setStatic (u); | |
163 | } | |
164 | else if (storageClass == SCEXTERN) | |
165 | { | |
166 | uentry_setExtern (u); | |
167 | } | |
168 | else | |
169 | { | |
170 | ; /* no storage class */ | |
171 | } | |
172 | ||
173 | } | |
174 | ||
175 | void storeLoc () | |
176 | { | |
177 | saveStoreLoc = g_currentloc; | |
178 | } | |
179 | ||
180 | void setFunctionNoGlobals (void) | |
181 | { | |
616915dd | 182 | fcnNoGlobals = TRUE; |
183 | } | |
184 | ||
616915dd | 185 | static void reflectGlobalQualifiers (sRef sr, qualList quals) |
186 | { | |
28bf4b0b | 187 | DPRINTF (("Reflect global qualifiers: %s / %s", |
188 | sRef_unparseFull (sr), qualList_unparse (quals))); | |
189 | ||
616915dd | 190 | qualList_elements (quals, qel) |
191 | { | |
192 | if (qual_isGlobalQual (qel)) /* undef, killed */ | |
193 | { | |
194 | sstate oldstate = sRef_getDefState (sr); | |
195 | sstate defstate = sstate_fromQual (qel); | |
196 | ||
197 | if ((oldstate == SS_UNDEFGLOB && defstate == SS_KILLED) | |
198 | || (oldstate == SS_KILLED && defstate == SS_UNDEFGLOB)) | |
199 | { | |
200 | defstate = SS_UNDEFKILLED; | |
201 | } | |
202 | else | |
203 | { | |
204 | ; /* any errors? */ | |
205 | } | |
206 | ||
207 | sRef_setDefState (sr, defstate, fileloc_undefined); | |
28bf4b0b | 208 | DPRINTF (("State: %s", sRef_unparseFull (sr))); |
616915dd | 209 | } |
210 | else if (qual_isAllocQual (qel)) /* out, partial, reldef, etc. */ | |
211 | { | |
212 | ctype realType = sRef_getType (sr); | |
213 | sstate defstate = sstate_fromQual (qel); | |
214 | ||
215 | if (qual_isRelDef (qel)) | |
216 | { | |
217 | ; /* okay anywhere */ | |
218 | } | |
219 | else | |
220 | { | |
221 | if (!ctype_isAP (realType) | |
222 | && !ctype_isSU (realType) | |
223 | && !ctype_isUnknown (realType) | |
224 | && !ctype_isAbstract (sRef_getType (sr))) | |
225 | { | |
226 | llerror | |
227 | (FLG_SYNTAX, | |
228 | message ("Qualifier %s used on non-pointer or struct: %q", | |
229 | qual_unparse (qel), sRef_unparse (sr))); | |
230 | ||
231 | } | |
232 | } | |
233 | ||
234 | sRef_setDefState (sr, defstate, fileloc_undefined); | |
235 | } | |
236 | else if (qual_isNull (qel)) | |
237 | { | |
238 | sRef_setNullState (sr, NS_POSNULL, fileloc_undefined); | |
239 | } | |
240 | else if (qual_isRelNull (qel)) | |
241 | { | |
242 | sRef_setNullState (sr, NS_RELNULL, fileloc_undefined); | |
243 | } | |
244 | else if (qual_isNotNull (qel)) | |
245 | { | |
246 | sRef_setNullState (sr, NS_MNOTNULL, fileloc_undefined); | |
247 | } | |
248 | else | |
249 | { | |
250 | if (qual_isCQual (qel)) | |
251 | { | |
252 | ; /* okay */ | |
253 | } | |
254 | else | |
255 | { | |
256 | llerror (FLG_SYNTAX, | |
257 | message ("Qualifier %s cannot be used in a globals list", | |
258 | qual_unparse (qel))); | |
259 | } | |
260 | } | |
261 | } end_qualList_elements; | |
262 | } | |
263 | ||
28bf4b0b | 264 | sRef clabstract_createGlobal (sRef sr, qualList quals) |
616915dd | 265 | { |
28bf4b0b | 266 | sRef res; |
267 | ||
616915dd | 268 | if (sRef_isValid (sr)) |
269 | { | |
28bf4b0b | 270 | res = sRef_copy (sr); |
271 | DPRINTF (("Reflecting quals: %s / %s", sRef_unparse (sr), qualList_unparse (quals))); | |
272 | reflectGlobalQualifiers (res, quals); | |
273 | DPRINTF (("==> %s", sRef_unparseFull (res))); | |
616915dd | 274 | } |
28bf4b0b | 275 | else |
276 | { | |
277 | res = sRef_undefined; | |
278 | } | |
279 | ||
280 | qualList_free (quals); | |
281 | return res; | |
616915dd | 282 | } |
283 | ||
284 | extern void declareCIter (cstring name, /*@owned@*/ uentryList params) | |
285 | { | |
286 | uentry ue; | |
287 | ||
288 | ue = uentry_makeIter (name, | |
289 | ctype_makeFunction (ctype_void, params), | |
290 | fileloc_copy (g_currentloc)); | |
291 | ||
292 | usymtab_supEntry (uentry_makeEndIter (name, fileloc_copy (g_currentloc))); | |
616915dd | 293 | ue = usymtab_supGlobalEntryReturn (ue); |
294 | } | |
295 | ||
296 | extern void nextIterParam (void) | |
297 | { | |
01a8227e | 298 | llassert (s_processingIterVars); |
616915dd | 299 | saveIterParamNo++; |
300 | } | |
301 | ||
302 | extern int iterParamNo (void) | |
303 | { | |
01a8227e | 304 | llassert (s_processingIterVars); |
616915dd | 305 | return saveIterParamNo; |
306 | } | |
307 | ||
308 | /* | |
309 | ** yucky hacks to put it in the right place | |
310 | */ | |
311 | ||
312 | /*@only@*/ uentry | |
313 | makeCurrentParam (idDecl t) | |
314 | { | |
315 | uentry ue; | |
316 | ||
317 | saveStoreLoc = fileloc_undefined; | |
318 | ||
319 | /* param number unknown */ | |
320 | ||
321 | ue = uentry_makeParam (t, 0); | |
322 | return ue; | |
323 | } | |
324 | ||
325 | ctype | |
326 | declareUnnamedEnum (enumNameList el) | |
327 | { | |
328 | ctype ret = usymtab_enumEnumNameListType (el); | |
329 | ctype rt; | |
330 | uentry e; | |
331 | ||
332 | if (ctype_isDefined (ret)) | |
333 | { | |
334 | rt = ret; | |
335 | e = uentry_makeEnumTagLoc (ctype_enumTag (rt), ret); | |
336 | ||
337 | reflectStorageClass (e); | |
338 | usymtab_supGlobalEntry (e); | |
339 | ||
340 | declareEnumList (el, ret, g_currentloc); | |
341 | enumNameList_free (el); | |
342 | } | |
343 | else | |
344 | { | |
345 | ctype ct = ctype_createEnum (fakeTag (), el); | |
346 | ||
347 | e = uentry_makeEnumTagLoc (ctype_enumTag (ctype_realType (ct)), ct); | |
348 | reflectStorageClass (e); | |
349 | ||
350 | e = usymtab_supGlobalEntryReturn (e); | |
351 | rt = uentry_getAbstractType (e); | |
352 | declareEnumList (el, ct, g_currentloc); | |
353 | } | |
354 | ||
355 | return (rt); | |
356 | } | |
357 | ||
358 | ctype | |
359 | declareEnum (cstring ename, enumNameList el) | |
360 | { | |
361 | ctype cet; | |
362 | uentry e; | |
363 | ||
364 | llassert (cstring_isDefined (ename)); | |
365 | ||
366 | cet = ctype_createEnum (ename, el); | |
367 | e = uentry_makeEnumTagLoc (ename, cet); | |
368 | reflectStorageClass (e); | |
369 | e = usymtab_supGlobalEntryReturn (e); | |
370 | cet = uentry_getType (e); | |
371 | declareEnumList (el, cet, uentry_whereLast (e)); | |
372 | return (uentry_getAbstractType (e)); | |
373 | } | |
374 | ||
375 | static void | |
376 | declareEnumList (enumNameList el, ctype c, fileloc loc) | |
377 | { | |
378 | bool boolnames = FALSE; | |
379 | bool othernames = FALSE; | |
380 | ||
381 | (void) context_getSaveLocation (); /* undefine it */ | |
382 | ||
383 | if (context_maybeSet (FLG_NUMENUMMEMBERS)) | |
384 | { | |
385 | int maxnum = context_getValue (FLG_NUMENUMMEMBERS); | |
386 | int num = enumNameList_size (el); | |
387 | ||
388 | if (num > maxnum) | |
389 | { | |
390 | voptgenerror | |
391 | (FLG_NUMENUMMEMBERS, | |
392 | message ("Enumerator %s declared with %d members (limit is set to %d)", | |
393 | ctype_unparse (c), num, maxnum), | |
394 | loc); | |
395 | } | |
396 | } | |
397 | ||
398 | enumNameList_elements (el, e) | |
399 | { | |
400 | uentry ue = usymtab_lookupExposeGlob (e); | |
401 | ctype ct = uentry_getType (ue); | |
402 | ||
403 | llassert (uentry_isEnumConstant (ue)); | |
404 | ||
405 | if (ctype_isUnknown (ct)) | |
406 | { | |
407 | uentry_setType (ue, c); | |
408 | } | |
409 | else | |
410 | { | |
411 | if (cstring_equal (e, context_getFalseName ()) | |
412 | || cstring_equal (e, context_getTrueName ())) | |
413 | { | |
414 | if (othernames) | |
415 | { | |
416 | if (optgenerror | |
417 | (FLG_INCONDEFS, | |
418 | message ("Enumerator mixes boolean name (%s) with " | |
419 | "non-boolean names", | |
420 | e), | |
421 | uentry_whereLast (ue))) | |
422 | { | |
423 | ; | |
424 | } | |
425 | } | |
426 | ||
427 | boolnames = TRUE; | |
428 | uentry_setType (ue, ctype_bool); | |
429 | DPRINTF (("Set type: %s / %s", | |
430 | uentry_unparse (ue), ctype_unparse (ctype_bool))); | |
431 | } | |
432 | else | |
433 | { | |
434 | if (boolnames) | |
435 | { | |
436 | if (optgenerror | |
437 | (FLG_INCONDEFS, | |
438 | message ("Enumerator mixes boolean names (%s, %s) with " | |
439 | "non-boolean name: %s", | |
440 | context_getTrueName (), | |
441 | context_getFalseName (), | |
442 | e), | |
443 | uentry_whereLast (ue))) | |
444 | { | |
445 | ; | |
446 | } | |
447 | } | |
448 | ||
449 | othernames = TRUE; | |
450 | } | |
451 | ||
452 | if (!ctype_match (c, ct)) | |
453 | { | |
454 | if (ctype_isDirectBool (ct)) | |
455 | { | |
456 | if (cstring_equal (e, context_getFalseName ()) | |
457 | || cstring_equal (e, context_getTrueName ())) | |
458 | { | |
459 | DPRINTF (("Here we are!")); | |
460 | } | |
461 | else | |
462 | { | |
463 | if (optgenerror | |
464 | (FLG_INCONDEFS, | |
465 | message ("Enumerator member %s declared with " | |
466 | "inconsistent type: %s", | |
467 | e, ctype_unparse (c)), | |
468 | uentry_whereLast (ue))) | |
469 | { | |
470 | uentry_showWhereSpecifiedExtra | |
471 | (ue, cstring_copy (ctype_unparse (ct))); | |
472 | } | |
473 | } | |
474 | } | |
475 | else | |
476 | { | |
477 | if (optgenerror | |
478 | (FLG_INCONDEFS, | |
479 | message ("Enumerator member %s declared with " | |
480 | "inconsistent type: %s", | |
481 | e, ctype_unparse (c)), | |
482 | uentry_whereLast (ue))) | |
483 | { | |
484 | uentry_showWhereSpecifiedExtra | |
485 | (ue, cstring_copy (ctype_unparse (ct))); | |
486 | } | |
487 | } | |
488 | } | |
489 | } | |
490 | } end_enumNameList_elements; | |
491 | } | |
492 | ||
493 | static /*@dependent@*/ uentryList currentParamList; | |
494 | ||
77d37419 | 495 | /*drl added 3-28-2002*/ |
470b7798 | 496 | /* this function takes a list of paramentar and generates a list |
497 | of constraints. | |
498 | Currently the only constraints gnerated are MaxSet(p) >= 0 for all pointers | |
499 | */ | |
2934b455 | 500 | |
c3e695ff | 501 | void setImplictfcnConstraints (void) |
470b7798 | 502 | { |
503 | uentryList params; | |
504 | sRef s; | |
505 | constraint c; | |
506 | params = currentParamList; | |
507 | ||
28bf4b0b | 508 | if (constraintList_isDefined(implicitFcnConstraints) ) |
bb25bea6 | 509 | constraintList_free(implicitFcnConstraints); |
510 | ||
c3e695ff | 511 | implicitFcnConstraints = constraintList_makeNew(); |
470b7798 | 512 | |
513 | uentryList_elements (params, el) | |
514 | { | |
515 | DPRINTF((message("setImplictfcnConstraints doing: %s", uentry_unparse(el) ) )); | |
516 | ||
517 | s = uentry_getSref(el); | |
518 | if (sRef_isReference (s) ) | |
519 | { | |
520 | DPRINTF((message ("%s is a pointer", sRef_unparse(s) ) )); | |
521 | } | |
522 | else | |
523 | { | |
524 | DPRINTF((message ("%s is NOT a pointer", sRef_unparse(s) ) )); | |
525 | } | |
526 | /*drl 4/26/01 | |
527 | chagned this is MaxSet(s) == 0 to MaxSet(s) >= 0 */ | |
528 | ||
529 | c = constraint_makeSRefWriteSafeInt (s, 0); | |
b7b694d6 | 530 | /* constraint_makeSRefSetBufferSize (s, 0); */ |
470b7798 | 531 | implicitFcnConstraints = constraintList_add(implicitFcnConstraints , c); |
532 | } | |
533 | end_uentryList_elements; | |
534 | } | |
535 | ||
2934b455 | 536 | |
537 | /*@observer@*/ constraintList getImplicitFcnConstraints (void) | |
538 | { | |
539 | return implicitFcnConstraints; | |
540 | } | |
541 | ||
616915dd | 542 | void setCurrentParams (/*@dependent@*/ uentryList ue) |
543 | { | |
544 | currentParamList = ue; | |
545 | } | |
546 | ||
547 | void clearCurrentParams (void) | |
548 | { | |
549 | currentParamList = uentryList_undefined; | |
550 | } | |
551 | ||
552 | /* | |
553 | ** requires: uentry_isFunction (e) | |
554 | ** parameter names for current function are in currentParamList | |
555 | */ | |
556 | ||
557 | static void enterFunctionParams (uentryList params) | |
558 | { | |
559 | int paramno = 0; | |
560 | ||
561 | uentryList_elements (params, current) | |
562 | { | |
563 | if (uentry_hasName (current)) | |
564 | { | |
565 | uentry_setParamNo (current, paramno); | |
566 | usymtab_supEntry (uentry_copy (current)); | |
567 | } | |
568 | ||
569 | paramno++; | |
570 | } end_uentryList_elements; | |
571 | } | |
572 | ||
573 | ||
574 | extern void enterParamsTemp (void) | |
575 | { | |
576 | usymtab_enterScope (); | |
577 | enterFunctionParams (currentParamList); | |
578 | } | |
579 | ||
580 | extern void exitParamsTemp (void) | |
581 | { | |
582 | usymtab_quietPlainExitScope (); | |
583 | } | |
584 | ||
28bf4b0b | 585 | static /*@exposed@*/ uentry clabstract_globalDeclareFunction (idDecl tid) |
616915dd | 586 | { |
587 | ctype deftype = idDecl_getCtype (tid); | |
588 | ctype rettype; | |
589 | uentry ue; | |
590 | ||
591 | DPRINTF (("Global function: %s", idDecl_unparse (tid))); | |
28bf4b0b | 592 | |
616915dd | 593 | if (ctype_isFunction (deftype)) |
594 | { | |
28bf4b0b | 595 | rettype = ctype_getReturnType (deftype); |
616915dd | 596 | } |
597 | else | |
598 | { | |
599 | rettype = ctype_unknown; | |
600 | } | |
601 | ||
602 | /* | |
603 | ** check has been moved here... | |
604 | */ | |
605 | ||
606 | if (ctype_isFunction (idDecl_getCtype (tid))) | |
607 | { | |
608 | ue = uentry_makeIdFunction (tid); | |
609 | reflectSpecialCode (ue); | |
610 | reflectArgsUsed (ue); | |
01a8227e | 611 | reflectStorageClass (ue); |
612 | uentry_checkParams (ue); | |
613 | ||
614 | DPRINTF (("Supercede function: %s", uentry_unparseFull (ue))); | |
615 | ||
616 | ue = usymtab_supGlobalEntryReturn (ue); | |
617 | DPRINTF (("After supercede function: %s", uentry_unparseFull (ue))); | |
618 | ||
619 | DPRINTF (("Enter function: %s", uentry_unparseFull (ue))); | |
620 | context_enterFunction (ue); | |
621 | enterFunctionParams (uentry_getParams (ue)); | |
622 | ||
623 | resetStorageClass (); | |
624 | DPRINTF (("Function: %s", uentry_unparseFull (ue))); | |
625 | return (ue); | |
616915dd | 626 | } |
627 | else | |
628 | { | |
01a8227e | 629 | llparseerror (message ("Non-function declaration: %q", |
616915dd | 630 | idDecl_unparse (tid))); |
01a8227e | 631 | return (uentry_undefined); |
616915dd | 632 | } |
616915dd | 633 | } |
634 | ||
635 | /* | |
636 | ** for now, no type checking | |
637 | ** (must check later though!) | |
638 | */ | |
639 | ||
640 | static /*@only@*/ uentry globalDeclareOldStyleFunction (idDecl tid) | |
641 | { | |
642 | uentry ue; | |
643 | ||
644 | /* | |
645 | ** check has been moved here... | |
646 | */ | |
647 | ||
648 | if (cstring_equalLit (idDecl_observeId (tid), "main")) | |
649 | { | |
650 | context_setFlagTemp (FLG_MAINTYPE, FALSE); | |
651 | } | |
652 | ||
653 | ue = uentry_makeIdFunction (tid); | |
654 | reflectStorageClass (ue); | |
655 | reflectSpecialCode (ue); | |
656 | reflectArgsUsed (ue); | |
657 | uentry_setDefined (ue, g_currentloc); | |
28bf4b0b | 658 | uentry_checkParams (ue); |
616915dd | 659 | resetStorageClass (); |
7ebcc5bb | 660 | |
661 | /* context_enterOldStyleScope (); */ | |
662 | ||
616915dd | 663 | return (ue); |
664 | } | |
665 | ||
666 | static void oldStyleDeclareFunction (/*@only@*/ uentry e) | |
667 | { | |
668 | uentryList params = saveParamList; | |
669 | ctype rt = uentry_getType (e); | |
670 | ||
671 | llassert (ctype_isFunction (rt)); | |
672 | ||
ccf0a4a8 | 673 | if (uentry_hasStateClauseList (e) |
674 | || uentry_hasConditions (e)) | |
675 | { | |
676 | llfatalerror (message ("%q: Old-style function declaration uses a clause (rewrite with function parameters): %q", | |
677 | fileloc_unparse (g_currentloc), uentry_unparse (e))); | |
678 | } | |
679 | ||
616915dd | 680 | e = usymtab_supGlobalEntryReturn (e); |
681 | ||
682 | context_enterFunction (e); | |
683 | enterFunctionParams (params); | |
684 | saveParamList = uentryList_undefined; | |
685 | resetStorageClass (); | |
686 | } | |
687 | ||
7ebcc5bb | 688 | static void oldStyleCompleteFunction (/*@only@*/ uentry e) |
689 | { | |
690 | uentryList params = saveParamList; | |
691 | ctype rt = uentry_getType (e); | |
692 | ||
693 | llassert (ctype_isFunction (rt)); | |
694 | ||
695 | if (uentry_hasStateClauseList (e) | |
696 | || uentry_hasConditions (e)) | |
697 | { | |
698 | llfatalerror (message ("%q: Old-style function declaration uses a clause (rewrite with function parameters): %q", | |
699 | fileloc_unparse (g_currentloc), uentry_unparse (e))); | |
700 | } | |
701 | ||
702 | e = usymtab_supGlobalEntryReturn (e); | |
703 | ||
704 | context_completeOldStyleFunction (e); | |
705 | enterFunctionParams (params); | |
706 | saveParamList = uentryList_undefined; | |
707 | resetStorageClass (); | |
708 | } | |
709 | ||
28bf4b0b | 710 | void clabstract_declareFunction (idDecl tid) /*@globals undef saveFunction; @*/ |
616915dd | 711 | { |
712 | uentry ue; | |
713 | ||
714 | DPRINTF (("Declare function: %s", idDecl_unparse (tid))); | |
715 | ||
01a8227e | 716 | if (ctype_isUnknown (idDecl_getCtype (tid))) |
616915dd | 717 | { |
01a8227e | 718 | /* |
719 | ** No type, its really a plain name (int) declaration | |
720 | */ | |
721 | ||
722 | voptgenerror (FLG_IMPTYPE, | |
723 | message ("No type before declaration name (implicit int type): %q", | |
724 | idDecl_unparse (tid)), | |
725 | g_currentloc); | |
726 | tid = idDecl_replaceCtype (tid, ctype_int); | |
727 | processVariable (tid); | |
728 | saveFunction = uentry_undefined; | |
616915dd | 729 | } |
730 | else | |
731 | { | |
01a8227e | 732 | if (s_processingParams) |
616915dd | 733 | { |
01a8227e | 734 | ue = globalDeclareOldStyleFunction (tid); |
735 | saveFunction = ue; | |
736 | DPRINTF (("Set save function: %s", uentry_unparseFull (ue))); | |
616915dd | 737 | } |
738 | else | |
739 | { | |
01a8227e | 740 | saveFunction = uentry_undefined; |
741 | ||
742 | if (context_inRealFunction ()) | |
616915dd | 743 | { |
01a8227e | 744 | ue = uentry_makeVariableLoc (idDecl_observeId (tid), ctype_unknown); |
745 | ||
746 | llparseerror (message ("Function declared inside function: %q", | |
616915dd | 747 | idDecl_unparse (tid))); |
748 | ||
01a8227e | 749 | context_quietExitFunction (); |
750 | ue = usymtab_supEntryReturn (ue); | |
616915dd | 751 | } |
752 | else | |
753 | { | |
01a8227e | 754 | if (context_inInnerScope ()) |
755 | { | |
756 | llparseerror (message ("Declaration in inner context: %q", | |
757 | idDecl_unparse (tid))); | |
758 | ||
759 | sRef_setGlobalScope (); | |
760 | ue = uentry_makeVariableLoc (idDecl_observeId (tid), | |
761 | ctype_unknown); | |
762 | ue = usymtab_supGlobalEntryReturn (ue); | |
763 | sRef_clearGlobalScope (); | |
764 | } | |
765 | else | |
766 | { | |
767 | ue = clabstract_globalDeclareFunction (tid); | |
768 | } | |
616915dd | 769 | } |
01a8227e | 770 | |
771 | resetGlobals (); | |
616915dd | 772 | } |
b87215ab | 773 | |
01a8227e | 774 | resetStorageClass (); |
616915dd | 775 | } |
b87215ab | 776 | |
777 | idDecl_free (tid); | |
616915dd | 778 | } |
779 | ||
780 | void declareStaticFunction (idDecl tid) /*@globals undef saveFunction; @*/ | |
781 | { | |
782 | uentry ue; | |
783 | ||
784 | DPRINTF (("Declare static funciton: %s", idDecl_unparse (tid))); | |
785 | ||
01a8227e | 786 | if (s_processingParams) |
616915dd | 787 | { |
788 | ue = globalDeclareOldStyleFunction (tid); | |
789 | saveFunction = ue; | |
790 | } | |
791 | else | |
792 | { | |
793 | saveFunction = uentry_undefined; | |
794 | ||
795 | if (context_inRealFunction ()) | |
796 | { | |
797 | ue = uentry_makeVariableLoc (idDecl_observeId (tid), ctype_unknown); | |
798 | ||
799 | llparseerror (message ("Function declared inside function: %q", | |
800 | idDecl_unparse (tid))); | |
801 | ||
802 | context_quietExitFunction (); | |
803 | ue = usymtab_supEntryReturn (ue); | |
804 | } | |
805 | else | |
806 | { | |
807 | if (context_inInnerScope ()) | |
808 | { | |
809 | llparseerror (message ("Declaration in inner context: %q", | |
810 | idDecl_unparse (tid))); | |
811 | ||
812 | sRef_setGlobalScope (); | |
813 | ue = uentry_makeVariableLoc (idDecl_observeId (tid), | |
814 | ctype_unknown); | |
815 | ue = usymtab_supGlobalEntryReturn (ue); | |
816 | sRef_clearGlobalScope (); | |
817 | } | |
818 | else | |
819 | { | |
820 | ctype deftype = idDecl_getCtype (tid); | |
821 | ctype rettype; | |
822 | ||
823 | if (ctype_isFunction (deftype)) | |
824 | { | |
28bf4b0b | 825 | rettype = ctype_getReturnType (deftype); |
616915dd | 826 | } |
827 | else | |
828 | { | |
829 | rettype = ctype_unknown; | |
830 | } | |
831 | ||
832 | /* | |
833 | ** check has been moved here... | |
834 | */ | |
835 | ||
836 | if (ctype_isFunction (idDecl_getCtype (tid))) | |
837 | { | |
838 | ue = uentry_makeIdFunction (tid); | |
839 | reflectSpecialCode (ue); | |
840 | reflectArgsUsed (ue); | |
841 | } | |
842 | else | |
843 | { | |
01a8227e | 844 | DPRINTF (("Here we are!")); |
616915dd | 845 | llparseerror (message ("Inconsistent function declaration: %q", |
846 | idDecl_unparse (tid))); | |
847 | ||
848 | tid = idDecl_replaceCtype | |
849 | (tid, ctype_makeFunction (ctype_unknown, uentryList_undefined)); | |
850 | ue = uentry_makeIdFunction (tid); | |
851 | } | |
852 | ||
853 | reflectStorageClass (ue); | |
854 | uentry_setStatic (ue); | |
855 | ||
856 | uentry_checkParams (ue); | |
616915dd | 857 | |
858 | DPRINTF (("Sub global entry: %s", uentry_unparse (ue))); | |
859 | ue = usymtab_supGlobalEntryReturn (ue); | |
860 | ||
861 | context_enterFunction (ue); | |
862 | enterFunctionParams (uentry_getParams (ue)); | |
863 | resetStorageClass (); | |
864 | } | |
865 | } | |
866 | ||
867 | resetGlobals (); | |
868 | } | |
869 | ||
870 | resetStorageClass (); | |
871 | idDecl_free (tid); | |
872 | } | |
873 | ||
874 | void | |
875 | checkTypeDecl (uentry e, ctype rep) | |
876 | { | |
877 | cstring n = uentry_getName (e); | |
878 | ||
28bf4b0b | 879 | DPRINTF (("Check type decl: %s", uentry_unparseFull (e))); |
616915dd | 880 | |
881 | if (cstring_equal (context_getBoolName (), n)) | |
882 | { | |
883 | ctype rrep = ctype_realType (rep); | |
884 | ||
885 | /* | |
886 | ** for abstract enum types, we need to fix the enum members: | |
887 | ** they should have the abstract type, not the rep type. | |
888 | */ | |
889 | ||
890 | if (ctype_isEnum (ctype_realType (rrep))) | |
891 | { | |
892 | enumNameList el = ctype_elist (rrep); | |
893 | ||
894 | enumNameList_elements (el, ye) | |
895 | { | |
896 | if (usymtab_existsGlob (ye)) | |
897 | { | |
898 | uentry ue = usymtab_lookupSafe (ye); | |
899 | uentry_setType (ue, ctype_bool); | |
900 | } | |
901 | ||
902 | if (cstring_equal (context_getTrueName (), ye) | |
903 | || cstring_equal (context_getFalseName (), ye)) | |
904 | { | |
905 | ; | |
906 | } | |
907 | else | |
908 | { | |
909 | vgenhinterror | |
910 | (FLG_SYNTAX, | |
911 | message ("Member of boolean enumerated type definition " | |
912 | "does not match name set to represent TRUE " | |
913 | "or FALSE: %s", | |
914 | ye), | |
915 | message ("Use -boolfalse and -booltrue to set the " | |
916 | "name of false and true boolean values."), | |
917 | uentry_whereDefined (e)); | |
918 | } | |
919 | } end_enumNameList_elements; | |
920 | } | |
921 | } | |
922 | ||
923 | if (usymtab_exists (n)) | |
924 | { | |
925 | usymId llm = usymtab_getId (n); | |
926 | uentry le = usymtab_getTypeEntry (llm); | |
927 | ||
928 | uentry_setDeclared (e, g_currentloc); | |
6970c11b | 929 | uentry_setSref (e, sRef_makeGlobal (llm, uentry_getType (le), stateInfo_currentLoc ())); |
616915dd | 930 | |
931 | DPRINTF (("Here we are: %s / %s", | |
932 | n, context_getBoolName ())); | |
933 | ||
934 | if (uentry_isAbstractDatatype (le)) | |
935 | { | |
936 | ctype rrep = ctype_realType (rep); | |
937 | ||
28bf4b0b | 938 | DPRINTF (("Abstract type: %s", uentry_unparseFull (le))); |
939 | ||
616915dd | 940 | /* |
941 | ** for abstract enum types, we need to fix the enum members: | |
942 | ** they should have the abstract type, not the rep type. | |
943 | */ | |
944 | ||
945 | if (ctype_isEnum (ctype_realType (rrep))) | |
946 | { | |
947 | ctype at = uentry_getAbstractType (le); | |
948 | enumNameList el = ctype_elist (rrep); | |
949 | ||
950 | enumNameList_elements (el, ye) | |
951 | { | |
952 | if (usymtab_existsGlob (ye)) | |
953 | { | |
954 | uentry ue = usymtab_lookupSafe (ye); | |
955 | ||
956 | llassert (uentry_isEitherConstant (ue)); | |
2cecdaff | 957 | |
958 | /* evans 2002-04-22 */ | |
959 | if (ctype_isBool (uentry_getType (ue))) | |
960 | { | |
961 | /* | |
962 | ** If set using -booltrue or -boolfalse, don't change the type. | |
963 | */ | |
964 | } | |
965 | else | |
966 | { | |
967 | llassertprint (ctype_match (uentry_getType (ue), rrep), | |
968 | ("Bad enum: %s / %s", | |
969 | uentry_unparse (ue), | |
970 | ctype_unparse (rrep))); | |
971 | ||
972 | uentry_setType (ue, at); | |
973 | } | |
616915dd | 974 | } |
975 | } end_enumNameList_elements; | |
976 | } | |
977 | ||
978 | if (uentry_isMutableDatatype (le)) | |
979 | { | |
980 | /* maybe more complicated if abstract and immutable ? */ | |
981 | ||
982 | if (!ctype_isRealPointer (rep) && !ctype_isRealAbstract (rep)) | |
983 | { | |
984 | voptgenerror | |
985 | (FLG_MUTREP, | |
986 | message ("Mutable abstract type %s declared without pointer " | |
987 | "indirection: %s (violates assignment semantics)", | |
988 | n, ctype_unparse (rep)), | |
989 | uentry_whereDefined (e)); | |
990 | ||
991 | uentry_setMutable (e); | |
992 | } | |
993 | } | |
994 | } | |
995 | } | |
996 | else | |
997 | { | |
998 | fileloc fl = uentry_whereDeclared (e); | |
999 | ||
1000 | if (context_getFlag (FLG_LIKELYBOOL) | |
1001 | && !context_getFlag (FLG_BOOLINT)) | |
1002 | { | |
1003 | if ((cstring_equalLit (n, "BOOL") | |
1004 | || cstring_equalLit (n, "Bool") | |
1005 | || cstring_equalLit (n, "bool") | |
1006 | || cstring_equalLit (n, "boolean") | |
1007 | || cstring_equalLit (n, "Boolean") | |
1008 | || cstring_equalLit (n, "BOOLEAN")) | |
1009 | && !(cstring_equal (n, context_getBoolName ()))) | |
1010 | { | |
1011 | if (context_setBoolName ()) { | |
1012 | voptgenerror | |
1013 | (FLG_LIKELYBOOL, | |
1014 | message ("Type %s is probably meant as a boolean type, but does " | |
1015 | "not match the boolean type name \"%s\".", | |
1016 | n, | |
1017 | context_getBoolName ()), | |
1018 | fl); | |
1019 | } else | |
1020 | voptgenerror | |
1021 | (FLG_LIKELYBOOL, | |
1022 | message ("Type %s is probably meant as a boolean type, " | |
1023 | "but the boolean type name is not set. " | |
1024 | "Use -booltype %s to set it.", | |
1025 | n, | |
1026 | n), | |
1027 | fl); | |
1028 | } | |
1029 | } | |
1030 | ||
1031 | if (!uentry_isStatic (e) | |
1032 | && !ctype_isFunction (uentry_getType (e)) | |
1033 | && !fileloc_isLib (fl) | |
1034 | && !fileloc_isImport (fl) | |
1035 | && fileloc_isHeader (fl)) | |
1036 | { | |
1037 | voptgenerror (FLG_EXPORTTYPE, | |
1038 | message ("Type exported, but not specified: %s\n", n), | |
1039 | fl); | |
1040 | } | |
1041 | } | |
1042 | ||
1043 | cstring_free (n); | |
1044 | } | |
1045 | ||
1046 | uentryList | |
1047 | fixUentryList (idDeclList tl, qtype q) | |
1048 | { | |
1049 | uentryList f = uentryList_new (); | |
1050 | ||
1051 | idDeclList_elements (tl, i) | |
1052 | { | |
1053 | if (idDecl_isDefined (i)) | |
1054 | { | |
1055 | uentry ue; | |
1056 | uentry old; | |
1057 | ctype rt; | |
1058 | ||
1059 | (void) idDecl_fixBase (i, q); | |
1060 | ||
1061 | /* | |
1062 | ** implicit annotations | |
1063 | */ | |
1064 | ||
1065 | (void) fixStructDecl (i); | |
1066 | ||
1067 | ue = uentry_makeIdVariable (i); | |
1068 | rt = ctype_realType (uentry_getType (ue)); | |
1069 | ||
1070 | /* | |
1071 | ** where is this here??? | |
1072 | ||
1073 | if (ctype_isArray (rt) || ctype_isSU (rt)) | |
1074 | { | |
1075 | sRef_setAllocated (uentry_getSref (ue), uentry_whereDefined (ue)); | |
1076 | } | |
1077 | ||
1078 | ** | |
1079 | */ | |
1080 | ||
1081 | if (uentry_isValid (old = uentryList_lookupField (f, uentry_rawName (ue)))) | |
1082 | { | |
1083 | if (optgenerror (FLG_SYNTAX, | |
1084 | message ("Field name reused: %s", uentry_rawName (ue)), | |
1085 | uentry_whereDefined (ue))) | |
1086 | { | |
1087 | llgenmsg (message ("Previous use of %s", uentry_rawName (ue)), | |
1088 | uentry_whereDefined (old)); | |
1089 | } | |
1090 | } | |
1091 | ||
1092 | f = uentryList_add (f, ue); | |
1093 | } | |
1094 | } end_idDeclList_elements; | |
1095 | ||
1096 | idDeclList_free (tl); | |
1097 | return (f); | |
1098 | } | |
1099 | ||
1100 | /* | |
1101 | ** This is a hack to support unnamed struct/union fields as done by | |
1102 | ** Microsoft VC++. It is not supported by the ANSI standard. | |
1103 | ** | |
1104 | ** The inner fields are added to the outer structure. This is meaningful | |
1b8ae690 | 1105 | ** for nesting structs inside unions, but Splint does no related |
616915dd | 1106 | ** checking. |
1107 | */ | |
1108 | ||
1109 | uentryList | |
1110 | fixUnnamedDecl (qtype q) | |
1111 | { | |
1112 | ctype ct = ctype_realType (qtype_getType (q)); | |
1113 | ||
1114 | if (ctype_isStruct (ct) || ctype_isUnion (ct)) | |
1115 | { | |
288cbc5c | 1116 | return uentryList_single (uentry_makeUnnamedVariable (ct)); |
616915dd | 1117 | } |
f32c0a7e | 1118 | else if (ctype_isEnum (ct)) |
1119 | { | |
1120 | /* evans 2002-02-05: nothing to do for unnamed enum lists */ | |
1121 | return uentryList_undefined; | |
1122 | } | |
616915dd | 1123 | else |
b642ab7c | 1124 | { |
1125 | voptgenerror | |
1126 | (FLG_SYNTAX, | |
1127 | message ("Type name in field declarations: %s", qtype_unparse (q)), | |
1128 | g_currentloc); | |
616915dd | 1129 | } |
1130 | ||
1131 | return uentryList_undefined; | |
1132 | } | |
1133 | ||
1134 | void setStorageClass (storageClassCode sc) | |
1135 | { | |
1136 | storageClass = sc; | |
1137 | } | |
1138 | ||
1139 | void | |
1140 | setProcessingIterVars (uentry iter) | |
1141 | { | |
01a8227e | 1142 | s_processingIterVars = TRUE; |
616915dd | 1143 | currentIter = iter; |
1144 | saveIterParamNo = 0; | |
1145 | } | |
1146 | ||
1147 | void | |
1148 | setProcessingGlobalsList () | |
1149 | { | |
01a8227e | 1150 | s_processingGlobals = TRUE; |
616915dd | 1151 | fcnNoGlobals = FALSE; |
1152 | } | |
1153 | ||
1154 | static bool ProcessingGlobMods = FALSE; | |
1155 | ||
1156 | void | |
1157 | setProcessingGlobMods () | |
1158 | { | |
1159 | ProcessingGlobMods = TRUE; | |
1160 | } | |
1161 | ||
1162 | void | |
1163 | clearProcessingGlobMods () | |
1164 | { | |
1165 | ProcessingGlobMods = FALSE; | |
1166 | } | |
1167 | ||
1168 | bool | |
1169 | isProcessingGlobMods () | |
1170 | { | |
1171 | return (ProcessingGlobMods); | |
1172 | } | |
1173 | ||
1174 | static void resetGlobals (void) | |
1175 | { | |
01a8227e | 1176 | s_processingGlobals = FALSE; |
616915dd | 1177 | fcnNoGlobals = FALSE; |
1178 | } | |
1179 | ||
1180 | void | |
1181 | unsetProcessingGlobals () | |
1182 | { | |
01a8227e | 1183 | s_processingGlobals = FALSE; |
616915dd | 1184 | } |
1185 | ||
1186 | void | |
1187 | setProcessingVars (/*@only@*/ qtype q) | |
1188 | { | |
01a8227e | 1189 | s_processingVars = TRUE; |
616915dd | 1190 | qtype_free (processingType); |
1191 | processingType = q; | |
1192 | } | |
1193 | ||
1194 | static void | |
1195 | setGenericParamList (/*@dependent@*/ uentryList pm) | |
1196 | { | |
01a8227e | 1197 | s_processingParams = TRUE; |
616915dd | 1198 | saveParamList = pm; |
1199 | } | |
1200 | ||
1201 | void | |
e83c79ec | 1202 | setProcessingTypedef (qtype q) |
616915dd | 1203 | { |
01a8227e | 1204 | s_processingTypedef = TRUE; |
616915dd | 1205 | |
1206 | qtype_free (processingType); | |
1207 | processingType = q; | |
1208 | } | |
1209 | ||
1210 | void | |
1211 | unsetProcessingVars () | |
1212 | { | |
1213 | resetStorageClass (); | |
01a8227e | 1214 | s_processingVars = FALSE; |
616915dd | 1215 | } |
1216 | ||
1217 | void | |
7ebcc5bb | 1218 | oldStyleDoneParams () |
616915dd | 1219 | { |
01a8227e | 1220 | if (s_processingParams) |
616915dd | 1221 | { |
1222 | if (uentry_isInvalid (saveFunction)) | |
1223 | { | |
1224 | llbuglit ("unsetProcessingVars: no saved function\n"); | |
616915dd | 1225 | } |
1226 | else | |
1227 | { | |
28bf4b0b | 1228 | ctype ct = ctype_getReturnType (uentry_getType (saveFunction)); |
616915dd | 1229 | uentryList params = uentryList_copy (saveParamList); |
1230 | ctype ct2 = ctype_makeFunction (ct, params); | |
1231 | ||
1232 | uentry_setType (saveFunction, ct2); | |
01a8227e | 1233 | s_processingParams = FALSE; |
616915dd | 1234 | |
7ebcc5bb | 1235 | oldStyleCompleteFunction (saveFunction); |
616915dd | 1236 | saveFunction = uentry_undefined; |
1237 | resetGlobals (); | |
1238 | } | |
1239 | } | |
1240 | else | |
1241 | { | |
1242 | /* | |
1243 | ** If the paramlist used a type name, we could be here. | |
1244 | */ | |
1245 | ||
1246 | llfatalerror (message ("%q: Old-style function parameter list uses a " | |
1247 | "type name.", fileloc_unparse (g_currentloc))); | |
1248 | } | |
1249 | } | |
1250 | ||
1251 | void | |
1252 | checkDoneParams () | |
1253 | { | |
1254 | if (uentry_isValid (saveFunction)) | |
1255 | { | |
1256 | /* | |
1257 | ** old style declaration | |
1258 | */ | |
1259 | ||
28bf4b0b | 1260 | ctype ct = ctype_getReturnType (uentry_getType (saveFunction)); |
616915dd | 1261 | ctype ct2; |
1262 | ||
7ebcc5bb | 1263 | DPRINTF (("save function: %s", uentry_unparseFull (saveFunction))); |
1264 | ||
616915dd | 1265 | uentryList_elements (saveParamList, current) |
1266 | { | |
1267 | uentry_setType (current, ctype_int); /* all params are ints */ | |
1268 | } end_uentryList_elements; | |
1269 | ||
1270 | ct2 = ctype_makeParamsFunction (ct, uentryList_copy (saveParamList)); | |
1271 | ||
1272 | uentry_setType (saveFunction, ct2); | |
01a8227e | 1273 | s_processingParams = FALSE; |
616915dd | 1274 | |
1275 | oldStyleDeclareFunction (saveFunction); | |
1276 | saveFunction = uentry_undefined; | |
1277 | } | |
1278 | } | |
1279 | ||
e83c79ec | 1280 | void clabstract_declareType (/*@only@*/ exprNodeList decls, /*@only@*/ warnClause warn) |
1281 | { | |
01a8227e | 1282 | llassert (s_processingTypedef); |
e83c79ec | 1283 | |
80489f0a | 1284 | DPRINTF (("Declare type: %s", exprNodeList_unparse (decls))); |
1285 | ||
e83c79ec | 1286 | if (warnClause_isDefined (warn)) |
1287 | { | |
80489f0a | 1288 | DPRINTF (("Has a warn clause!")); |
1289 | DPRINTF (("Warn: %s", warnClause_unparse (warn))); | |
1290 | ||
e83c79ec | 1291 | exprNodeList_elements (decls, el) |
1292 | { | |
1293 | uentry ue = exprNode_getUentry (el); | |
1294 | cstring uname = uentry_getName (ue); | |
1295 | ||
1296 | DPRINTF (("Entry: %s", exprNode_unparse (el))); | |
1297 | ||
1298 | /* | |
1299 | ** Need to lookup again to make sure we have the right one... | |
1300 | */ | |
1301 | ||
15b3d2b2 | 1302 | ue = usymtab_lookupExposeGlob (uname); |
e83c79ec | 1303 | |
1304 | llassert (uentry_isValid (ue)); | |
1305 | llassert (uentry_isDatatype (ue)); | |
1306 | ||
1307 | DPRINTF (("Warning for %s: %s", | |
1308 | uentry_unparse (ue), warnClause_unparse (warn))); | |
1309 | ||
1310 | uentry_addWarning (ue, warnClause_copy (warn)); | |
80489f0a | 1311 | DPRINTF (("After add warning: %s", uentry_unparseFull (ue))); |
15b3d2b2 | 1312 | cstring_free (uname); |
e83c79ec | 1313 | } end_exprNodeList_elements; |
1314 | } | |
1315 | ||
1316 | warnClause_free (warn); | |
1317 | exprNodeList_free (decls); | |
1318 | unsetProcessingTypedef (); | |
1319 | } | |
1320 | ||
616915dd | 1321 | void |
1322 | unsetProcessingTypedef () | |
1323 | { | |
01a8227e | 1324 | s_processingTypedef = FALSE; |
616915dd | 1325 | } |
1326 | ||
1327 | void checkConstant (qtype t, idDecl id) | |
1328 | { | |
1329 | uentry e; | |
7534721d | 1330 | |
616915dd | 1331 | id = idDecl_fixBase (id, t); |
1332 | e = uentry_makeIdConstant (id); | |
7534721d | 1333 | |
616915dd | 1334 | reflectStorageClass (e); |
1335 | resetStorageClass (); | |
1336 | ||
d89a0c94 | 1337 | DPRINTF (("Constant: %s", uentry_unparseFull (e))); |
616915dd | 1338 | usymtab_supGlobalEntry (e); |
1339 | } | |
1340 | ||
1341 | void checkValueConstant (qtype t, idDecl id, exprNode e) | |
1342 | { | |
1343 | uentry ue; | |
1344 | ||
1345 | id = idDecl_fixBase (id, t); | |
1346 | ue = uentry_makeIdConstant (id); | |
1347 | reflectStorageClass (ue); | |
1348 | resetStorageClass (); | |
1349 | ||
1350 | if (exprNode_isDefined (e)) | |
1351 | { | |
1352 | if (!exprNode_matchType (uentry_getType (ue), e)) | |
1353 | { | |
1354 | (void) gentypeerror | |
1355 | (exprNode_getType (e), e, | |
1356 | uentry_getType (ue), exprNode_undefined, | |
1357 | message ("Constant %q initialized to type %t, expects %t: %s", | |
1358 | uentry_getName (ue), | |
1359 | exprNode_getType (e), | |
1360 | uentry_getType (ue), | |
1361 | exprNode_unparse (e)), | |
1362 | exprNode_loc (e)); | |
1363 | } | |
1364 | else | |
1365 | { | |
1366 | if (exprNode_hasValue (e)) | |
1367 | { | |
1368 | uentry_mergeConstantValue (ue, multiVal_copy (exprNode_getValue (e))); | |
1369 | } | |
b9904f57 | 1370 | else |
1371 | { | |
1372 | DPRINTF (("No value: %s", exprNode_unparse (e))); | |
1373 | } | |
616915dd | 1374 | } |
1375 | } | |
1376 | ||
b9904f57 | 1377 | DPRINTF (("Constant value: %s", uentry_unparseFull (ue))); |
616915dd | 1378 | usymtab_supGlobalEntry (ue); |
1379 | } | |
1380 | ||
01a8227e | 1381 | static void processVariable (idDecl t) |
616915dd | 1382 | { |
01a8227e | 1383 | uentry e; |
1384 | ctype ct; | |
7ebcc5bb | 1385 | |
01a8227e | 1386 | ct = ctype_realType (idDecl_getCtype (t)); |
1387 | ||
1388 | if (s_processingParams) | |
616915dd | 1389 | { |
1390 | cstring id = idDecl_getName (t); | |
01a8227e | 1391 | int paramno = uentryList_lookupRealName (saveParamList, id); |
28bf4b0b | 1392 | |
01a8227e | 1393 | if (paramno >= 0) |
616915dd | 1394 | { |
01a8227e | 1395 | uentry cparam = uentryList_getN (saveParamList, paramno); |
1396 | ||
1397 | DPRINTF (("Processing param: %s", uentry_unparseFull (cparam))); | |
1398 | uentry_setType (cparam, idDecl_getCtype (t)); | |
1399 | uentry_reflectQualifiers (cparam, idDecl_getQuals (t)); | |
1400 | uentry_setDeclaredOnly (cparam, context_getSaveLocation ()); | |
1401 | DPRINTF (("Processing param: %s", uentry_unparseFull (cparam))); | |
616915dd | 1402 | } |
1403 | else | |
1404 | { | |
01a8227e | 1405 | llfatalerrorLoc |
1406 | (message ("Old style declaration uses unlisted parameter: %s", | |
1407 | id)); | |
616915dd | 1408 | } |
1409 | } | |
01a8227e | 1410 | else |
616915dd | 1411 | { |
01a8227e | 1412 | fileloc loc; |
616915dd | 1413 | |
01a8227e | 1414 | if (context_inIterDef ()) |
616915dd | 1415 | { |
01a8227e | 1416 | cstring pname = makeParam (idDecl_observeId (t)); |
1417 | uentry p = usymtab_lookupSafe (pname); | |
1418 | ||
1419 | cstring_free (pname); | |
1420 | ||
1421 | if (uentry_isYield (p)) | |
616915dd | 1422 | { |
01a8227e | 1423 | e = uentry_makeParam (t, sRef_getParam (uentry_getSref (p))); |
1424 | uentry_checkYieldParam (p, e); | |
1425 | usymtab_supEntrySref (e); | |
1426 | return; | |
616915dd | 1427 | } |
1428 | } | |
01a8227e | 1429 | |
1430 | if ((hasSpecialCode () || argsUsed) | |
1431 | && ctype_isFunction (idDecl_getCtype (t))) | |
1432 | { | |
1433 | e = uentry_makeIdFunction (t); | |
1434 | reflectSpecialCode (e); | |
1435 | reflectArgsUsed (e); | |
1436 | } | |
616915dd | 1437 | else |
1438 | { | |
01a8227e | 1439 | e = uentry_makeIdVariable (t); |
1440 | } | |
1441 | ||
1442 | loc = uentry_whereDeclared (e); | |
1443 | ||
1444 | /* | |
1445 | if (context_inGlobalScope ()) | |
1446 | { | |
1447 | uentry_checkParams was here! | |
1448 | } | |
1449 | */ | |
1450 | ||
1451 | if (ctype_isFunction (uentry_getType (e))) | |
1452 | { | |
1453 | clabstract_prepareFunction (e); | |
1454 | } | |
1455 | ||
1456 | DPRINTF (("Superceding... %s", uentry_unparseFull (e))); | |
1457 | e = usymtab_supEntrySrefReturn (e); | |
1458 | DPRINTF (("After superceding... %s", uentry_unparseFull (e))); | |
1459 | ||
1460 | if (uentry_isExtern (e) && !context_inGlobalScope ()) | |
1461 | { | |
1462 | voptgenerror | |
1463 | (FLG_NESTEDEXTERN, | |
1464 | message ("Declaration using extern inside function scope: %q", | |
1465 | uentry_unparse (e)), | |
1466 | g_currentloc); | |
28bf4b0b | 1467 | |
01a8227e | 1468 | uentry_setDefined (e, fileloc_getExternal ()); |
1469 | sRef_setDefined (uentry_getSref (e), fileloc_getExternal ()); | |
1470 | } | |
1471 | ||
1472 | if (uentry_isFunction (e)) | |
1473 | { | |
1474 | if (!context_inXHFile ()) | |
616915dd | 1475 | { |
01a8227e | 1476 | checkParamNames (e); |
616915dd | 1477 | } |
01a8227e | 1478 | } |
1479 | ||
1480 | if (uentry_isVar (e) && uentry_isCheckedUnknown (e)) | |
1481 | { | |
1482 | sRef sr = uentry_getSref (e); | |
616915dd | 1483 | |
01a8227e | 1484 | if (sRef_isLocalVar (sr)) |
616915dd | 1485 | { |
01a8227e | 1486 | if (context_getFlag (FLG_IMPCHECKMODINTERNALS)) |
1487 | { | |
1488 | uentry_setCheckMod (e); | |
1489 | } | |
1490 | else | |
1491 | { | |
1492 | uentry_setUnchecked (e); | |
1493 | } | |
616915dd | 1494 | } |
01a8227e | 1495 | else if (sRef_isFileStatic (sr)) |
616915dd | 1496 | { |
01a8227e | 1497 | if (context_getFlag (FLG_IMPCHECKEDSTRICTSTATICS)) |
1498 | { | |
1499 | uentry_setCheckedStrict (e); | |
1500 | } | |
1501 | else if (context_getFlag (FLG_IMPCHECKEDSTATICS)) | |
28bf4b0b | 1502 | { |
01a8227e | 1503 | uentry_setChecked (e); |
1504 | } | |
1505 | else if (context_getFlag (FLG_IMPCHECKMODSTATICS)) | |
1506 | { | |
1507 | uentry_setCheckMod (e); | |
1508 | } | |
1509 | else | |
1510 | { | |
1511 | ; | |
28bf4b0b | 1512 | } |
616915dd | 1513 | } |
01a8227e | 1514 | else /* real global */ |
616915dd | 1515 | { |
01a8227e | 1516 | llassert (sRef_isRealGlobal (sr)); |
28bf4b0b | 1517 | |
01a8227e | 1518 | if (context_getFlag (FLG_IMPCHECKEDSTRICTGLOBALS)) |
616915dd | 1519 | { |
01a8227e | 1520 | uentry_setCheckedStrict (e); |
616915dd | 1521 | } |
01a8227e | 1522 | else if (context_getFlag (FLG_IMPCHECKEDGLOBALS)) |
616915dd | 1523 | { |
01a8227e | 1524 | uentry_setChecked (e); |
616915dd | 1525 | } |
01a8227e | 1526 | else if (context_getFlag (FLG_IMPCHECKMODGLOBALS)) |
616915dd | 1527 | { |
01a8227e | 1528 | uentry_setCheckMod (e); |
1529 | } | |
1530 | else | |
1531 | { | |
1532 | ; | |
616915dd | 1533 | } |
1534 | } | |
1535 | } | |
1536 | } | |
01a8227e | 1537 | } |
1538 | ||
1539 | void processNamedDecl (idDecl t) | |
1540 | { | |
1541 | if (qtype_isUndefined (processingType)) | |
1542 | { | |
1543 | processingType = qtype_create (ctype_int); | |
1544 | t = idDecl_fixBase (t, processingType); | |
1545 | ||
1546 | voptgenerror (FLG_IMPTYPE, | |
1547 | message ("No type before declaration name (implicit int type): %q", | |
1548 | idDecl_unparse (t)), | |
1549 | g_currentloc); | |
1550 | } | |
1551 | else | |
1552 | { | |
1553 | t = idDecl_fixBase (t, processingType); | |
1554 | } | |
1555 | ||
1556 | DPRINTF (("Declare: %s", idDecl_unparse (t))); | |
1557 | ||
1558 | if (s_processingGlobals) | |
1559 | { | |
1560 | cstring id = idDecl_getName (t); | |
1561 | uentry ue = usymtab_lookupSafe (id); | |
1562 | ||
1563 | if (!uentry_isValid (ue)) | |
1564 | { | |
1565 | llerror (FLG_UNRECOG, | |
1566 | message ("Variable used in globals list is undeclared: %s", id)); | |
1567 | } | |
1568 | else | |
1569 | { | |
1570 | if (!ctype_match (uentry_getType (ue), idDecl_getCtype (t))) | |
1571 | { | |
1572 | voptgenerror | |
1573 | (FLG_INCONDEFS, | |
1574 | message ("Variable %s used in globals list declared %s, " | |
1575 | "but listed as %s", | |
1576 | id, ctype_unparse (uentry_getType (ue)), | |
1577 | ctype_unparse (idDecl_getCtype (t))), | |
1578 | g_currentloc); | |
1579 | } | |
1580 | else | |
1581 | { | |
1582 | sRef sr = sRef_copy (uentry_getSref (ue)); | |
1583 | reflectGlobalQualifiers (sr, idDecl_getQuals (t)); | |
1584 | } | |
1585 | } | |
1586 | } | |
1587 | else if (s_processingVars) | |
1588 | { | |
1589 | processVariable (t); | |
1590 | } | |
1591 | else if (s_processingTypedef) | |
616915dd | 1592 | { |
1593 | ctype ct = idDecl_getCtype (t); | |
1594 | uentry e; | |
28bf4b0b | 1595 | |
616915dd | 1596 | DPRINTF (("Processing typedef: %s", ctype_unparse (ct))); |
1597 | ||
1598 | e = uentry_makeIdDatatype (t); | |
1599 | ||
1600 | if (cstring_equal (idDecl_getName (t), context_getBoolName ())) { | |
1601 | ctype rt = ctype_realType (ct); | |
1602 | ||
1603 | if (ctype_isEnum (rt)) { | |
1604 | ; | |
1605 | } else { | |
1606 | if (!(ctype_isInt (rt) | |
1607 | || ctype_isUnknown (rt) | |
1608 | || ctype_isChar (rt))) { | |
1609 | (void) llgenerror | |
1610 | (FLG_BOOLTYPE, | |
1611 | message ("Boolean type %s defined using non-standard type %s (integral, char or enum type expected)", | |
1612 | context_getBoolName (), | |
1613 | ctype_unparse (ct)), | |
1614 | uentry_whereLast (e)); | |
1615 | } | |
1616 | ||
1617 | ct = ctype_bool; | |
1618 | uentry_setType (e, ct); | |
1619 | } | |
1620 | } | |
1621 | ||
1622 | reflectStorageClass (e); | |
1623 | checkTypeDecl (e, ct); | |
1624 | ||
1625 | e = usymtab_supReturnTypeEntry (e); | |
616915dd | 1626 | } |
1627 | else | |
1628 | { | |
1629 | llparseerror (message ("Suspect missing struct or union keyword: %q", | |
1630 | idDecl_unparse (t))); | |
1631 | } | |
1632 | ||
1633 | } | |
1634 | ||
1635 | /* | |
1636 | ** moved from grammar | |
1637 | */ | |
1638 | ||
1639 | static idDecl fixStructDecl (/*@returned@*/ idDecl d) | |
1640 | { | |
1641 | if (ctype_isVisiblySharable (idDecl_getCtype (d)) | |
1642 | && context_getFlag (FLG_STRUCTIMPONLY)) | |
1643 | { | |
1644 | if (!qualList_hasAliasQualifier (idDecl_getQuals (d))) | |
1645 | { | |
1646 | if (qualList_hasExposureQualifier (idDecl_getQuals (d))) | |
1647 | { | |
1648 | idDecl_addQual (d, qual_createDependent ()); | |
1649 | } | |
1650 | else | |
1651 | { | |
1652 | idDecl_addQual (d, qual_createImpOnly ()); | |
1653 | } | |
1654 | } | |
1655 | } | |
1656 | ||
1657 | return d; | |
1658 | } | |
1659 | ||
1660 | ctype | |
1661 | declareUnnamedStruct (/*@only@*/ uentryList f) | |
1662 | { | |
28bf4b0b | 1663 | DPRINTF (("Unnamed struct: %s", uentryList_unparse (f))); |
1664 | ||
616915dd | 1665 | if (context_maybeSet (FLG_NUMSTRUCTFIELDS)) |
1666 | { | |
1667 | int num = uentryList_size (f); | |
1668 | int max = context_getValue (FLG_NUMSTRUCTFIELDS); | |
1669 | ||
1670 | if (num > max) | |
1671 | { | |
1672 | voptgenerror | |
1673 | (FLG_NUMSTRUCTFIELDS, | |
1674 | message ("Structure declared with %d fields " | |
1675 | "(limit is set to %d)", | |
1676 | num, max), | |
1677 | g_currentloc); | |
1678 | } | |
1679 | } | |
1680 | ||
1681 | return (ctype_createUnnamedStruct (f)); | |
1682 | } | |
1683 | ||
1684 | ctype | |
1685 | declareUnnamedUnion (/*@only@*/ uentryList f) | |
1686 | { | |
288cbc5c | 1687 | DPRINTF (("Unnamed union: %s", uentryList_unparse (f))); |
1688 | ||
616915dd | 1689 | if (context_maybeSet (FLG_NUMSTRUCTFIELDS)) |
1690 | { | |
1691 | int num = uentryList_size (f); | |
1692 | int max = context_getValue (FLG_NUMSTRUCTFIELDS); | |
1693 | ||
1694 | if (num > max) | |
1695 | { | |
1696 | voptgenerror | |
1697 | (FLG_NUMSTRUCTFIELDS, | |
1698 | message ("Union declared with %d fields " | |
1699 | "(limit is set to %d)", | |
1700 | num, max), | |
1701 | g_currentloc); | |
1702 | } | |
1703 | } | |
1704 | ||
1705 | return (ctype_createUnnamedUnion (f)); | |
1706 | } | |
1707 | ||
1708 | ctype declareStruct (cstring id, /*@only@*/ uentryList f) | |
1709 | { | |
1710 | ctype ct; | |
1711 | uentry ue; | |
1712 | int num = uentryList_size (f); | |
1713 | ||
288cbc5c | 1714 | DPRINTF (("Declare struct: %s / %s [%d]", id, uentryList_unparse (f), |
1715 | uentryList_size (f))); | |
28bf4b0b | 1716 | |
616915dd | 1717 | ct = ctype_createStruct (cstring_copy (id), f); |
28bf4b0b | 1718 | |
1719 | DPRINTF (("Ctype: %s", ctype_unparse (ct))); | |
1720 | ||
616915dd | 1721 | ue = uentry_makeStructTagLoc (id, ct); |
1722 | ||
28bf4b0b | 1723 | DPRINTF (("ue: %s", uentry_unparseFull (ue))); |
1724 | ||
616915dd | 1725 | if (context_maybeSet (FLG_NUMSTRUCTFIELDS)) |
1726 | { | |
1727 | int max = context_getValue (FLG_NUMSTRUCTFIELDS); | |
1728 | ||
1729 | if (num > max) | |
1730 | { | |
1731 | voptgenerror | |
1732 | (FLG_NUMSTRUCTFIELDS, | |
1733 | message ("Structure %q declared with %d fields " | |
1734 | "(limit is set to %d)", | |
1735 | uentry_getName (ue), num, max), | |
1736 | uentry_whereLast (ue)); | |
1737 | } | |
1738 | } | |
1739 | ||
1740 | return (usymtab_supTypeEntry (ue)); | |
1741 | } | |
1742 | ||
1743 | ctype declareUnion (cstring id, uentryList f) | |
1744 | { | |
1745 | ctype ct; | |
1746 | uentry ue; | |
1747 | int num = uentryList_size (f); | |
1748 | ||
1749 | ct = ctype_createUnion (cstring_copy (id), f); | |
1750 | ue = uentry_makeUnionTagLoc (id, ct); | |
1751 | ||
1752 | if (context_maybeSet (FLG_NUMSTRUCTFIELDS)) | |
1753 | { | |
1754 | int max = context_getValue (FLG_NUMSTRUCTFIELDS); | |
1755 | ||
1756 | if (num > max) | |
1757 | { | |
1758 | voptgenerror | |
1759 | (FLG_NUMSTRUCTFIELDS, | |
1760 | message ("Union %q declared with %d fields " | |
1761 | "(limit is set to %d)", | |
1762 | uentry_getName (ue), num, max), | |
1763 | uentry_whereLast (ue)); | |
1764 | } | |
1765 | } | |
1766 | ||
1767 | return (usymtab_supTypeEntry (ue)); | |
1768 | } | |
1769 | ||
1770 | ctype handleStruct (/*@only@*/ cstring id) | |
1771 | { | |
1772 | if (usymtab_existsStructTag (id)) | |
1773 | { | |
1774 | ctype ct = uentry_getAbstractType (usymtab_lookupStructTag (id)); | |
1775 | ||
1776 | cstring_free (id); | |
1777 | return ct; | |
1778 | } | |
1779 | else | |
1780 | { | |
1781 | return (ctype_createForwardStruct (id)); | |
1782 | } | |
1783 | } | |
1784 | ||
1785 | ctype handleUnion (/*@only@*/ cstring id) | |
1786 | { | |
1787 | if (usymtab_existsUnionTag (id)) | |
1788 | { | |
1789 | ctype ret = uentry_getAbstractType (usymtab_lookupUnionTag (id)); | |
1790 | cstring_free (id); | |
1791 | return (ret); | |
1792 | } | |
1793 | else | |
1794 | { | |
1795 | return (ctype_createForwardUnion (id)); | |
1796 | } | |
1797 | } | |
1798 | ||
1799 | ctype | |
1800 | handleEnum (cstring id) | |
1801 | { | |
1802 | if (usymtab_existsEnumTag (id)) | |
1803 | { | |
1804 | ctype ret = uentry_getAbstractType (usymtab_lookupEnumTag (id)); | |
1805 | cstring_free (id); | |
1806 | return ret; | |
1807 | } | |
1808 | else | |
1809 | { | |
140c27a8 | 1810 | return (ctype_createForwardEnum (id)); |
616915dd | 1811 | } |
1812 | } | |
1813 | ||
1814 | bool processingIterVars (void) | |
1815 | { | |
01a8227e | 1816 | return s_processingIterVars; |
616915dd | 1817 | } |
1818 | ||
1819 | uentry getCurrentIter (void) | |
1820 | { | |
1821 | return currentIter; | |
1822 | } | |
1823 | ||
1824 | static bool flipOldStyle = FALSE; | |
1825 | static bool flipNewStyle = TRUE; | |
1826 | ||
1827 | void setFlipOldStyle () { flipOldStyle = TRUE; } | |
1828 | bool isFlipOldStyle () { return flipOldStyle; } | |
1829 | bool isNewStyle () { return flipNewStyle; } | |
1830 | void setNewStyle () { flipNewStyle = TRUE; } | |
1831 | ||
1832 | /*@dependent@*/ uentryList handleParamIdList (/*@dependent@*/ uentryList params) | |
1833 | { | |
1834 | int paramno = 0; | |
1835 | ||
1836 | /* | |
1837 | ** this is a really YUCKY hack to handle old style | |
1838 | ** declarations. | |
1839 | */ | |
1840 | ||
1841 | voptgenerror (FLG_OLDSTYLE, | |
1842 | cstring_makeLiteral ("Old style function declaration"), | |
1843 | g_currentloc); | |
1844 | ||
7ebcc5bb | 1845 | DPRINTF (("Handle old style params: %s", uentryList_unparseFull (params))); |
1846 | ||
616915dd | 1847 | uentryList_elements (params, current) |
1848 | { | |
1849 | uentry_setParam (current); | |
6970c11b | 1850 | uentry_setSref (current, sRef_makeParam (paramno, ctype_unknown, stateInfo_makeLoc (uentry_whereLast (current)))); |
616915dd | 1851 | paramno++; |
1852 | } end_uentryList_elements; | |
1853 | ||
1854 | setGenericParamList (params); | |
1855 | g_expectingTypeName = TRUE; | |
1856 | ||
1857 | return params; | |
1858 | } | |
1859 | ||
1860 | /*@dependent@*/ uentryList handleParamTypeList (/*@returned@*/ uentryList params) | |
1861 | { | |
1862 | if (flipOldStyle) | |
1863 | { | |
1864 | uentryList_fixMissingNames (params); | |
1865 | ||
1866 | voptgenerror (FLG_OLDSTYLE, | |
1867 | cstring_makeLiteral ("Old style function declaration."), | |
1868 | g_currentloc); | |
1869 | ||
1870 | setGenericParamList (params); | |
1871 | flipOldStyle = FALSE; | |
1872 | g_expectingTypeName = TRUE; | |
1873 | } | |
1874 | ||
1875 | return (params); | |
1876 | } | |
1877 | ||
1878 | void | |
1879 | doVaDcl () | |
1880 | { | |
1881 | ctype c = ctype_unknown; | |
1882 | cstring id = cstring_makeLiteral ("va_alist"); | |
1883 | uentry e; | |
1884 | ||
01a8227e | 1885 | if (s_processingParams) |
616915dd | 1886 | { |
1887 | int i = uentryList_lookupRealName (saveParamList, id); | |
1888 | ||
1889 | if (i >= 0) | |
1890 | { | |
6970c11b | 1891 | fileloc loc = context_getSaveLocation (); |
1892 | e = uentry_makeVariableSrefParam (id, c, loc, sRef_makeParam (i, c, stateInfo_makeLoc (loc))); | |
616915dd | 1893 | } |
1894 | else | |
1895 | { | |
1896 | e = uentry_undefined; /* suppress gcc message */ | |
1897 | llfatalerrorLoc (cstring_makeLiteral ("va_dcl used without va_alist")); | |
1898 | } | |
1899 | } | |
1900 | else | |
1901 | { | |
1902 | llerror (FLG_SYNTAX, cstring_makeLiteral ("va_dcl used outside of function declaration")); | |
1903 | e = uentry_makeVariableLoc (id, c); | |
1904 | } | |
1905 | ||
1906 | cstring_free (id); | |
1907 | uentry_setUsed (e, g_currentloc); | |
1908 | usymtab_supEntrySref (e); | |
1909 | } | |
1910 | ||
28bf4b0b | 1911 | /*@exposed@*/ sRef modListPointer (/*@exposed@*/ sRef s) |
616915dd | 1912 | { |
1913 | ctype ct = sRef_getType (s); | |
1914 | ctype rt = ctype_realType (ct); | |
1915 | ||
1916 | if (ctype_isAP (rt)) | |
1917 | { | |
1918 | if (context_inHeader () && ctype_isAbstract (ct)) | |
1919 | { | |
1920 | voptgenerror | |
1921 | (FLG_ABSTRACT, | |
1922 | message | |
1923 | ("Modifies clause in header file dereferences abstract " | |
1924 | "type %s (interface modifies clause should not depend " | |
1925 | "on or expose type representation): %q", | |
1926 | ctype_unparse (ct), | |
1927 | sRef_unparse (s)), | |
1928 | g_currentloc); | |
1929 | } | |
1930 | ||
1931 | return (sRef_constructPointer (s)); | |
1932 | } | |
1933 | else | |
1934 | { | |
1935 | if (ctype_isKnown (rt)) | |
1936 | { | |
1937 | voptgenerror | |
1938 | (FLG_TYPE, | |
1939 | message ("Implementation modifies clause dereferences non-pointer (type %s): %q", | |
1940 | ctype_unparse (rt), | |
1941 | sRef_unparse (s)), | |
1942 | g_currentloc); | |
1943 | } | |
1944 | ||
1945 | return s; | |
1946 | } | |
1947 | } | |
1948 | ||
1949 | /*@exposed@*/ sRef modListFieldAccess (sRef s, cstring f) | |
1950 | { | |
1951 | ctype ct = sRef_getType (s); | |
1952 | ctype rt = ctype_realType (ct); | |
1953 | ||
1954 | if (ctype_isStructorUnion (rt)) | |
1955 | { | |
1956 | uentry tf = uentryList_lookupField (ctype_getFields (rt), f); | |
1957 | ||
1958 | if (uentry_isUndefined (tf)) | |
1959 | { | |
1960 | voptgenerror (FLG_TYPE, | |
1961 | message ("Modifies list accesses non-existent " | |
1962 | "field %s of %t: %q", f, ct, | |
1963 | sRef_unparse (s)), | |
1964 | g_currentloc); | |
1965 | ||
1966 | cstring_free (f); | |
1967 | return sRef_undefined; | |
1968 | } | |
1969 | else | |
1970 | { | |
1971 | if (ctype_isAbstract (ct) && context_inHeader ()) | |
1972 | { | |
1973 | voptgenerror | |
1974 | (FLG_ABSTRACT, | |
1975 | message | |
1976 | ("Modifies clause in header file accesses abstract " | |
1977 | "type %s (interface modifies clause should not depend " | |
1978 | "on or expose type representation): %q", | |
1979 | ctype_unparse (ct), | |
1980 | sRef_unparse (s)), | |
1981 | g_currentloc); | |
1982 | } | |
1983 | } | |
1984 | ||
1985 | cstring_markOwned (f); | |
1986 | return (sRef_makeField (s, f)); | |
1987 | } | |
1988 | else | |
1989 | { | |
1990 | voptgenerror | |
1991 | (FLG_TYPE, | |
1992 | message ("Modifies clause dereferences non-pointer (type %s): %q", | |
1993 | ctype_unparse (rt), | |
1994 | sRef_unparse (s)), | |
1995 | g_currentloc); | |
1996 | ||
1997 | cstring_free (f); | |
1998 | return s; | |
1999 | } | |
2000 | } | |
2001 | ||
28bf4b0b | 2002 | /*@dependent@*/ sRef clabstract_unrecognizedGlobal (cstring s) |
616915dd | 2003 | { |
2004 | if (cstring_equalLit (s, "nothing")) | |
2005 | { | |
2006 | return sRef_makeNothing (); | |
2007 | } | |
2008 | else if (cstring_equalLit (s, "internalState")) | |
2009 | { | |
2010 | return sRef_makeInternalState (); | |
2011 | } | |
2012 | else if (cstring_equalLit (s, "fileSystem") | |
2013 | || cstring_equalLit (s, "systemState")) | |
2014 | { | |
2015 | return sRef_makeSystemState (); | |
2016 | } | |
2017 | else | |
2018 | { | |
2019 | voptgenerror | |
2020 | (FLG_UNRECOG, | |
2021 | message ("Unrecognized identifier in globals list: %s", s), | |
2022 | g_currentloc); | |
2023 | ||
2024 | return sRef_undefined; | |
2025 | } | |
2026 | } | |
2027 | ||
2028 | /*@exposed@*/ sRef modListArrowAccess (sRef s, cstring f) | |
2029 | { | |
2030 | ctype ct = sRef_getType (s); | |
2031 | ctype rt = ctype_realType (ct); | |
2032 | ||
2033 | if (ctype_isRealPointer (rt)) | |
2034 | { | |
2035 | ctype b = ctype_baseArrayPtr (rt); | |
2036 | ctype rb = ctype_realType (b); | |
2037 | ||
2038 | if (ctype_isStructorUnion (rb)) | |
2039 | { | |
2040 | uentry tf = uentryList_lookupField (ctype_getFields (rb), f); | |
2041 | ||
2042 | if (uentry_isUndefined (tf)) | |
2043 | { | |
2044 | voptgenerror (FLG_TYPE, | |
2045 | message ("Modifies list arrow accesses non-existent " | |
2046 | "field %s of %t: %q", f, b, | |
2047 | sRef_unparse (s)), | |
2048 | g_currentloc); | |
2049 | ||
2050 | cstring_free (f); | |
2051 | return sRef_undefined; | |
2052 | } | |
2053 | else | |
2054 | { | |
2055 | if (context_inHeader ()) | |
2056 | { | |
2057 | if (ctype_isAbstract (b)) | |
2058 | { | |
2059 | voptgenerror | |
2060 | (FLG_ABSTRACT, | |
2061 | message | |
2062 | ("Modifies clause in header file arrow accesses abstract " | |
2063 | "type %s (interface modifies clause should not depend " | |
2064 | "on or expose type representation): %q", | |
2065 | ctype_unparse (b), | |
2066 | sRef_unparse (s)), | |
2067 | g_currentloc); | |
2068 | } | |
2069 | } | |
2070 | else | |
2071 | { | |
146e25eb | 2072 | if (ctype_isAbstract (rt)) |
616915dd | 2073 | { |
2074 | voptgenerror | |
2075 | (FLG_ABSTRACT, | |
2076 | message | |
146e25eb | 2077 | ("Modifies clause arrow accesses inaccessible abstract " |
616915dd | 2078 | "type %s (interface modifies clause should not depend " |
2079 | "on or expose type representation): %q", | |
146e25eb | 2080 | ctype_unparse (rt), |
616915dd | 2081 | sRef_unparse (s)), |
2082 | g_currentloc); | |
2083 | } | |
2084 | } | |
2085 | } | |
2086 | ||
2087 | cstring_markOwned (f); | |
2088 | return (sRef_makeArrow (s, f)); | |
2089 | } | |
2090 | else | |
2091 | { | |
2092 | voptgenerror | |
2093 | (FLG_TYPE, | |
2094 | message ("Modifies clause arrow accesses pointer to " | |
2095 | "non-structure (type %s): %q", | |
2096 | ctype_unparse (rt), | |
2097 | sRef_unparse (s)), | |
2098 | g_currentloc); | |
2099 | } | |
2100 | } | |
2101 | else | |
2102 | { | |
2103 | voptgenerror | |
2104 | (FLG_TYPE, | |
2105 | message ("Modifies clause arrow accesses non-pointer (type %s): %q", | |
2106 | ctype_unparse (rt), | |
2107 | sRef_unparse (s)), | |
2108 | g_currentloc); | |
2109 | } | |
2110 | ||
2111 | cstring_free (f); | |
2112 | return s; | |
2113 | } | |
2114 | ||
28bf4b0b | 2115 | sRef checkStateClausesId (uentry ue) |
616915dd | 2116 | { |
2117 | cstring s = uentry_rawName (ue); | |
2118 | ||
28bf4b0b | 2119 | if (sRef_isFileOrGlobalScope (uentry_getSref (ue))) |
616915dd | 2120 | { |
2121 | voptgenerror | |
28bf4b0b | 2122 | (FLG_COMMENTERROR, |
1b8ae690 | 2123 | message ("Global variable %s used state clause. (Global variables " |
2124 | "are not recognized in state clauses. If there is " | |
616915dd | 2125 | "sufficient interest in support for this, it may be " |
2126 | "added to a future release. Send mail to " | |
155af98d | 2127 | "info@splint.org.)", |
616915dd | 2128 | s), |
2129 | g_currentloc); | |
2130 | ||
2131 | return sRef_undefined; | |
2132 | } | |
2133 | else | |
2134 | { | |
2135 | if (cstring_equalLit (s, "result")) | |
2136 | { | |
2137 | if (optgenerror | |
2138 | (FLG_SYNTAX, | |
2139 | message ("Special clause list uses %s which is a variable and has special " | |
2140 | "meaning in a modifies list. (Special meaning assumed.)", s), | |
2141 | g_currentloc)) | |
2142 | { | |
2143 | uentry_showWhereDeclared (ue); | |
2144 | } | |
2145 | } | |
2146 | ||
2147 | return uentry_getSref (ue); | |
2148 | } | |
2149 | } | |
9280addf | 2150 | /*drl:1/19/2001 |
2151 | oops to 1/8/2000 | |
2152 | date is wronge .. | |
2153 | don;t know what the real date is... | |
2154 | ||
2155 | */ | |
616915dd | 2156 | |
2157 | /*drl | |
2158 | added 1/8/2000 | |
2159 | based on checkSpecClausesId | |
2160 | called by grammar | |
2161 | */ | |
b37cf05e | 2162 | |
616915dd | 2163 | sRef checkbufferConstraintClausesId (uentry ue) |
2164 | { | |
5ca29538 | 2165 | sRef sr; |
616915dd | 2166 | cstring s = uentry_rawName (ue); |
08eb3d0e | 2167 | |
616915dd | 2168 | if (cstring_equalLit (s, "result")) |
2169 | { | |
2170 | if (optgenerror | |
2171 | (FLG_SYNTAX, | |
08eb3d0e | 2172 | message ("Function clause list uses %s which is a variable and has special " |
616915dd | 2173 | "meaning in a modifies list. (Special meaning assumed.)", s), |
2174 | g_currentloc)) | |
2175 | { | |
2176 | uentry_showWhereDeclared (ue); | |
2177 | } | |
2178 | } | |
2179 | ||
5ca29538 | 2180 | DPRINTF (("constraint id: %s", uentry_unparseFull (ue))); |
2181 | sr = uentry_getSref (ue); | |
2182 | ||
2183 | if (sRef_isInvalid (sr) ) | |
2184 | { | |
2185 | llfatalerrorLoc (cstring_makeLiteral("Macro defined constants can not be used in function constraints unless they are specifed with the constant annotation. To use a macro defined constant include an annotation of the form /*@constant <type> <name>=<value>@*/ somewhere before the function constraint. This restriction may be removed in future releases if it is determined to be excessively burdensome." )); | |
2186 | } | |
2187 | return sRef_saveCopy (sr); /*@i523 why the saveCopy? */ | |
616915dd | 2188 | } |
2189 | ||
2190 | void checkModifiesId (uentry ue) | |
2191 | { | |
2192 | cstring s = uentry_rawName (ue); | |
2193 | ||
2194 | if (cstring_equalLit (s, "nothing") | |
2195 | || cstring_equalLit (s, "internalState") | |
2196 | || cstring_equalLit (s, "systemState") | |
2197 | || (cstring_equalLit (s, "fileSystem"))) | |
2198 | { | |
2199 | if (optgenerror | |
2200 | (FLG_SYNTAX, | |
2201 | message ("Modifies list uses %s which is a variable and has special " | |
2202 | "meaning in a modifies list. (Special meaning assumed.)", s), | |
2203 | g_currentloc)) | |
2204 | { | |
2205 | uentry_showWhereDeclared (ue); | |
2206 | } | |
2207 | } | |
2208 | } | |
2209 | ||
2210 | /*@exposed@*/ sRef fixModifiesId (cstring s) | |
2211 | { | |
2212 | sRef ret; | |
2213 | cstring pname = makeParam (s); | |
2214 | uentry ue = usymtab_lookupSafe (pname); | |
2215 | ||
2216 | cstring_free (pname); | |
2217 | ||
2218 | if (cstring_equalLit (s, "nothing")) | |
2219 | { | |
2220 | ret = sRef_makeNothing (); | |
2221 | } | |
2222 | else if (cstring_equalLit (s, "internalState")) | |
2223 | { | |
2224 | ret = sRef_makeInternalState (); | |
2225 | } | |
2226 | else if (cstring_equalLit (s, "fileSystem") | |
2227 | || cstring_equalLit (s, "systemState")) | |
2228 | { | |
2229 | ret = sRef_makeSystemState (); | |
2230 | } | |
2231 | else | |
2232 | { | |
2233 | ret = sRef_undefined; | |
2234 | } | |
2235 | ||
2236 | if (sRef_isValid (ret)) | |
2237 | { | |
2238 | if (uentry_isValid (ue)) | |
2239 | { | |
2240 | voptgenerror | |
2241 | (FLG_SYNTAX, | |
2242 | message ("Modifies list uses %s which is a parameter and has special " | |
2243 | "meaning in a modifies list. (Special meaning assumed.)", s), | |
2244 | g_currentloc); | |
2245 | } | |
2246 | } | |
2247 | else | |
2248 | { | |
2249 | if (uentry_isValid (ue)) | |
2250 | { | |
2251 | ret = uentry_getSref (ue); | |
2252 | } | |
2253 | else | |
2254 | { | |
abd7f895 | 2255 | fileloc loc = fileloc_decColumn (g_currentloc, size_toInt (cstring_length (s))); |
616915dd | 2256 | ret = sRef_undefined; |
2257 | ||
2258 | voptgenerror | |
2259 | (FLG_UNRECOG, | |
2260 | message ("Unrecognized identifier in modifies comment: %s", s), | |
2261 | loc); | |
2262 | ||
2263 | fileloc_free (loc); | |
2264 | } | |
2265 | } | |
2266 | ||
2267 | return ret; | |
2268 | } | |
2269 | ||
28bf4b0b | 2270 | sRef fixStateClausesId (cstring s) |
616915dd | 2271 | { |
2272 | sRef ret; | |
2273 | cstring pname = makeParam (s); | |
2274 | uentry ue = usymtab_lookupSafe (pname); | |
2275 | ||
2276 | cstring_free (pname); | |
2277 | ||
2278 | if (cstring_equalLit (s, "result")) | |
2279 | { | |
b072092f | 2280 | ret = sRef_makeResult (ctype_unknown); |
616915dd | 2281 | } |
2282 | else | |
2283 | { | |
2284 | ret = sRef_undefined; | |
2285 | } | |
2286 | ||
2287 | if (sRef_isValid (ret)) | |
2288 | { | |
2289 | if (uentry_isValid (ue)) | |
2290 | { | |
2291 | voptgenerror | |
2292 | (FLG_SYNTAX, | |
d9a28762 | 2293 | message ("Function clause uses %s which is a parameter and has special " |
2294 | "meaning in a function clause. (Special meaning assumed.)", s), | |
616915dd | 2295 | g_currentloc); |
2296 | } | |
2297 | } | |
2298 | else | |
2299 | { | |
2300 | if (uentry_isValid (ue)) | |
2301 | { | |
2302 | ret = uentry_getSref (ue); | |
2303 | ||
28bf4b0b | 2304 | if (sRef_isFileOrGlobalScope (ret)) |
616915dd | 2305 | { |
2306 | voptgenerror | |
2307 | (FLG_SYNTAX, | |
d9a28762 | 2308 | message ("Global variable %s used in function clause. (Global variables " |
2309 | "are not recognized in function clauses. If there is " | |
616915dd | 2310 | "sufficient interest in support for this, it may be " |
2311 | "added to a future release. Send mail to " | |
155af98d | 2312 | "info@splint.org.)", |
616915dd | 2313 | s), |
2314 | g_currentloc); | |
2315 | ||
2316 | ret = sRef_undefined; | |
2317 | } | |
2318 | } | |
2319 | else | |
2320 | { | |
86d93ed3 | 2321 | /*@i222@*/ |
2322 | /*drl handle structure invariant */ | |
2323 | ||
2324 | /*@i222@*/ | |
2325 | /*check that we're in a structure */ | |
4dd72714 | 2326 | # if 0\r |
2327 | /*@unused@*/ uentryList ueL; | |
86d93ed3 | 2328 | /*@unused@*/ uentry ue2; |
4dd72714 | 2329 | /*@unused@*/ ctype ct;\r |
2330 | # endif | |
abd7f895 | 2331 | fileloc loc = fileloc_decColumn (g_currentloc, size_toInt (cstring_length (s))); |
616915dd | 2332 | ret = sRef_undefined; |
4dd72714 | 2333 | # if 0 |
86d93ed3 | 2334 | /*drl commenting this out for now |
2335 | ct = context_getLastStruct ( ct ); | |
2336 | ||
2337 | llassert( ctype_isStruct(ct) ); | |
2338 | ||
2339 | ueL = ctype_getFields (ct); | |
2340 | ||
2341 | ue2 = uentryList_lookupField (ueL, s); | |
2342 | ||
2343 | if (!uentry_isUndefined(ue2) ) | |
2344 | { | |
2345 | ret = uentry_getSref(ue2); | |
2346 | ||
2347 | DPRINTF(( | |
2348 | message("Got field in structure in the annotation constraint: %s (or sref: %s)", s, sRef_unparse(ret) ) | |
2349 | )); | |
2350 | ||
2351 | return ret; | |
2352 | } | |
4dd72714 | 2353 | */\r |
2354 | # endif\r | |
2355 | ||
616915dd | 2356 | voptgenerror |
2357 | (FLG_UNRECOG, | |
d9a28762 | 2358 | message ("Unrecognized identifier in function clause: %s", s), |
616915dd | 2359 | loc); |
2360 | ||
2361 | fileloc_free (loc); | |
2362 | } | |
2363 | } | |
2364 | ||
2365 | return ret; | |
2366 | } | |
2367 | ||
28bf4b0b | 2368 | sRef modListArrayFetch (/*@exposed@*/ sRef s, /*@unused@*/ sRef mexp) |
616915dd | 2369 | { |
2370 | ctype ct = sRef_getType (s); | |
2371 | ctype rt = ctype_realType (ct); | |
2372 | ||
2373 | if (ctype_isAP (rt)) | |
2374 | { | |
2375 | if (context_inHeader () && ctype_isAbstract (ct)) | |
2376 | { | |
2377 | voptgenerror | |
2378 | (FLG_ABSTRACT, | |
2379 | message | |
2380 | ("Modifies clause in header file indexes abstract " | |
2381 | "type %s (interface modifies clause should not depend " | |
2382 | "on or expose type representation): %q", | |
2383 | ctype_unparse (ct), | |
2384 | sRef_unparse (s)), | |
2385 | g_currentloc); | |
2386 | } | |
2387 | ||
2388 | return (sRef_makeAnyArrayFetch (s)); | |
2389 | } | |
2390 | else | |
2391 | { | |
2392 | voptgenerror | |
2393 | (FLG_TYPE, | |
2394 | message | |
2395 | ("Implementation modifies clause uses array fetch on non-array (type %s): %q", | |
2396 | ctype_unparse (ct), sRef_unparse (s)), | |
2397 | g_currentloc); | |
2398 | return s; | |
2399 | } | |
2400 | } | |
2401 | ||
28bf4b0b | 2402 | static void clabstract_prepareFunction (uentry e) |
2403 | { | |
2404 | uentry_checkParams (e); | |
2405 | DPRINTF (("After prepare: %s", uentry_unparseFull (e))); | |
2406 | } | |
2407 | ||
2408 | sRef clabstract_checkGlobal (exprNode e) | |
2409 | { | |
2410 | sRef s; | |
2411 | llassert (exprNode_isInitializer (e)); | |
2412 | ||
2413 | s = exprNode_getSref (e); | |
2414 | DPRINTF (("Initializer: %s -> %s", exprNode_unparse (e), sRef_unparse (s))); | |
2415 | ||
2416 | exprNode_free (e); | |
2417 | return sRef_copy (s); | |
2418 | } |