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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" | |
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 | ||
b7b694d6 | 54 | /*drl*/ |
55 | static /*@only@*/ constraintList implicitFcnConstraints = NULL; | |
616915dd | 56 | |
28bf4b0b | 57 | static void clabstract_prepareFunction (uentry p_e) /*@modifies p_e@*/ ; |
616915dd | 58 | static bool fcnNoGlobals = FALSE; |
01a8227e | 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; | |
616915dd | 66 | static /*@only@*/ qtype processingType = qtype_undefined; |
67 | static uentry currentIter = uentry_undefined; | |
616915dd | 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); | |
28bf4b0b | 77 | static /*@null@*/ qual specialFunctionCode; |
616915dd | 78 | static bool argsUsed = FALSE; |
79 | ||
28bf4b0b | 80 | extern void clabstract_initMod () |
81 | { | |
82 | specialFunctionCode = qual_createUnknown (); | |
83 | DPRINTF (("Initialized: %s", qual_unparse (specialFunctionCode))); | |
84 | } | |
85 | ||
616915dd | 86 | static bool hasSpecialCode (void) |
87 | { | |
28bf4b0b | 88 | return (!qual_isUnknown (specialFunctionCode)); |
616915dd | 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 | { | |
28bf4b0b | 124 | if (!qual_isUnknown (specialFunctionCode)) |
616915dd | 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 | { | |
28bf4b0b | 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 | } | |
616915dd | 150 | |
28bf4b0b | 151 | specialFunctionCode = qual_createUnknown (); |
616915dd | 152 | } |
153 | ||
154 | static void resetStorageClass (void) | |
155 | { | |
156 | qtype_free (processingType); | |
157 | processingType = qtype_undefined; | |
158 | storageClass = SCNONE; | |
159 | } | |
160 | ||
616915dd | 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 | { | |
616915dd | 185 | fcnNoGlobals = TRUE; |
186 | } | |
187 | ||
616915dd | 188 | static void reflectGlobalQualifiers (sRef sr, qualList quals) |
189 | { | |
28bf4b0b | 190 | DPRINTF (("Reflect global qualifiers: %s / %s", |
191 | sRef_unparseFull (sr), qualList_unparse (quals))); | |
192 | ||
616915dd | 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); | |
28bf4b0b | 211 | DPRINTF (("State: %s", sRef_unparseFull (sr))); |
616915dd | 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 | ||
28bf4b0b | 267 | sRef clabstract_createGlobal (sRef sr, qualList quals) |
616915dd | 268 | { |
28bf4b0b | 269 | sRef res; |
270 | ||
616915dd | 271 | if (sRef_isValid (sr)) |
272 | { | |
28bf4b0b | 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))); | |
616915dd | 277 | } |
28bf4b0b | 278 | else |
279 | { | |
280 | res = sRef_undefined; | |
281 | } | |
282 | ||
283 | qualList_free (quals); | |
284 | return res; | |
616915dd | 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))); | |
616915dd | 296 | ue = usymtab_supGlobalEntryReturn (ue); |
297 | } | |
298 | ||
299 | extern void nextIterParam (void) | |
300 | { | |
01a8227e | 301 | llassert (s_processingIterVars); |
616915dd | 302 | saveIterParamNo++; |
303 | } | |
304 | ||
305 | extern int iterParamNo (void) | |
306 | { | |
01a8227e | 307 | llassert (s_processingIterVars); |
616915dd | 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 | ||
77d37419 | 498 | /*drl added 3-28-2002*/ |
470b7798 | 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 | */ | |
2934b455 | 503 | |
c3e695ff | 504 | void setImplictfcnConstraints (void) |
470b7798 | 505 | { |
506 | uentryList params; | |
507 | sRef s; | |
508 | constraint c; | |
509 | params = currentParamList; | |
510 | ||
28bf4b0b | 511 | if (constraintList_isDefined(implicitFcnConstraints) ) |
bb25bea6 | 512 | constraintList_free(implicitFcnConstraints); |
513 | ||
c3e695ff | 514 | implicitFcnConstraints = constraintList_makeNew(); |
470b7798 | 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); | |
b7b694d6 | 533 | /* constraint_makeSRefSetBufferSize (s, 0); */ |
470b7798 | 534 | implicitFcnConstraints = constraintList_add(implicitFcnConstraints , c); |
535 | } | |
536 | end_uentryList_elements; | |
537 | } | |
538 | ||
2934b455 | 539 | |
540 | /*@observer@*/ constraintList getImplicitFcnConstraints (void) | |
541 | { | |
542 | return implicitFcnConstraints; | |
543 | } | |
544 | ||
616915dd | 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 | ||
28bf4b0b | 588 | static /*@exposed@*/ uentry clabstract_globalDeclareFunction (idDecl tid) |
616915dd | 589 | { |
590 | ctype deftype = idDecl_getCtype (tid); | |
591 | ctype rettype; | |
592 | uentry ue; | |
593 | ||
594 | DPRINTF (("Global function: %s", idDecl_unparse (tid))); | |
28bf4b0b | 595 | |
616915dd | 596 | if (ctype_isFunction (deftype)) |
597 | { | |
28bf4b0b | 598 | rettype = ctype_getReturnType (deftype); |
616915dd | 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); | |
01a8227e | 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); | |
616915dd | 629 | } |
630 | else | |
631 | { | |
01a8227e | 632 | llparseerror (message ("Non-function declaration: %q", |
616915dd | 633 | idDecl_unparse (tid))); |
01a8227e | 634 | return (uentry_undefined); |
616915dd | 635 | } |
616915dd | 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); | |
28bf4b0b | 661 | uentry_checkParams (ue); |
616915dd | 662 | resetStorageClass (); |
7ebcc5bb | 663 | |
664 | /* context_enterOldStyleScope (); */ | |
665 | ||
616915dd | 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 | ||
ccf0a4a8 | 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 | ||
616915dd | 683 | e = usymtab_supGlobalEntryReturn (e); |
684 | ||
685 | context_enterFunction (e); | |
686 | enterFunctionParams (params); | |
687 | saveParamList = uentryList_undefined; | |
688 | resetStorageClass (); | |
689 | } | |
690 | ||
7ebcc5bb | 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 | ||
28bf4b0b | 713 | void clabstract_declareFunction (idDecl tid) /*@globals undef saveFunction; @*/ |
616915dd | 714 | { |
715 | uentry ue; | |
716 | ||
717 | DPRINTF (("Declare function: %s", idDecl_unparse (tid))); | |
718 | ||
01a8227e | 719 | if (ctype_isUnknown (idDecl_getCtype (tid))) |
616915dd | 720 | { |
01a8227e | 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; | |
616915dd | 732 | } |
733 | else | |
734 | { | |
01a8227e | 735 | if (s_processingParams) |
616915dd | 736 | { |
01a8227e | 737 | ue = globalDeclareOldStyleFunction (tid); |
738 | saveFunction = ue; | |
739 | DPRINTF (("Set save function: %s", uentry_unparseFull (ue))); | |
616915dd | 740 | } |
741 | else | |
742 | { | |
01a8227e | 743 | saveFunction = uentry_undefined; |
744 | ||
745 | if (context_inRealFunction ()) | |
616915dd | 746 | { |
01a8227e | 747 | ue = uentry_makeVariableLoc (idDecl_observeId (tid), ctype_unknown); |
748 | ||
749 | llparseerror (message ("Function declared inside function: %q", | |
616915dd | 750 | idDecl_unparse (tid))); |
751 | ||
01a8227e | 752 | context_quietExitFunction (); |
753 | ue = usymtab_supEntryReturn (ue); | |
616915dd | 754 | } |
755 | else | |
756 | { | |
01a8227e | 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 | } | |
616915dd | 772 | } |
01a8227e | 773 | |
774 | resetGlobals (); | |
616915dd | 775 | } |
b87215ab | 776 | |
01a8227e | 777 | resetStorageClass (); |
616915dd | 778 | } |
b87215ab | 779 | |
780 | idDecl_free (tid); | |
616915dd | 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 | ||
01a8227e | 789 | if (s_processingParams) |
616915dd | 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 | { | |
28bf4b0b | 828 | rettype = ctype_getReturnType (deftype); |
616915dd | 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 | { | |
01a8227e | 847 | DPRINTF (("Here we are!")); |
616915dd | 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); | |
616915dd | 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 | ||
28bf4b0b | 882 | DPRINTF (("Check type decl: %s", uentry_unparseFull (e))); |
616915dd | 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); | |
6970c11b | 932 | uentry_setSref (e, sRef_makeGlobal (llm, uentry_getType (le), stateInfo_currentLoc ())); |
616915dd | 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 | ||
28bf4b0b | 941 | DPRINTF (("Abstract type: %s", uentry_unparseFull (le))); |
942 | ||
616915dd | 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)); | |
2cecdaff | 960 | |
961 | /* evans 2002-04-22 */ | |
962 | if (ctype_isBool (uentry_getType (ue))) | |
963 | { | |
964 | /* | |
965 | ** If set using -booltrue or -boolfalse, don't change the type. | |
966 | */ | |
967 | } | |
968 | else | |
969 | { | |
970 | llassertprint (ctype_match (uentry_getType (ue), rrep), | |
971 | ("Bad enum: %s / %s", | |
972 | uentry_unparse (ue), | |
973 | ctype_unparse (rrep))); | |
974 | ||
975 | uentry_setType (ue, at); | |
976 | } | |
616915dd | 977 | } |
978 | } end_enumNameList_elements; | |
979 | } | |
980 | ||
981 | if (uentry_isMutableDatatype (le)) | |
982 | { | |
983 | /* maybe more complicated if abstract and immutable ? */ | |
984 | ||
985 | if (!ctype_isRealPointer (rep) && !ctype_isRealAbstract (rep)) | |
986 | { | |
987 | voptgenerror | |
988 | (FLG_MUTREP, | |
989 | message ("Mutable abstract type %s declared without pointer " | |
990 | "indirection: %s (violates assignment semantics)", | |
991 | n, ctype_unparse (rep)), | |
992 | uentry_whereDefined (e)); | |
993 | ||
994 | uentry_setMutable (e); | |
995 | } | |
996 | } | |
997 | } | |
998 | } | |
999 | else | |
1000 | { | |
1001 | fileloc fl = uentry_whereDeclared (e); | |
1002 | ||
1003 | if (context_getFlag (FLG_LIKELYBOOL) | |
1004 | && !context_getFlag (FLG_BOOLINT)) | |
1005 | { | |
1006 | if ((cstring_equalLit (n, "BOOL") | |
1007 | || cstring_equalLit (n, "Bool") | |
1008 | || cstring_equalLit (n, "bool") | |
1009 | || cstring_equalLit (n, "boolean") | |
1010 | || cstring_equalLit (n, "Boolean") | |
1011 | || cstring_equalLit (n, "BOOLEAN")) | |
1012 | && !(cstring_equal (n, context_getBoolName ()))) | |
1013 | { | |
1014 | if (context_setBoolName ()) { | |
1015 | voptgenerror | |
1016 | (FLG_LIKELYBOOL, | |
1017 | message ("Type %s is probably meant as a boolean type, but does " | |
1018 | "not match the boolean type name \"%s\".", | |
1019 | n, | |
1020 | context_getBoolName ()), | |
1021 | fl); | |
1022 | } else | |
1023 | voptgenerror | |
1024 | (FLG_LIKELYBOOL, | |
1025 | message ("Type %s is probably meant as a boolean type, " | |
1026 | "but the boolean type name is not set. " | |
1027 | "Use -booltype %s to set it.", | |
1028 | n, | |
1029 | n), | |
1030 | fl); | |
1031 | } | |
1032 | } | |
1033 | ||
1034 | if (!uentry_isStatic (e) | |
1035 | && !ctype_isFunction (uentry_getType (e)) | |
1036 | && !fileloc_isLib (fl) | |
1037 | && !fileloc_isImport (fl) | |
1038 | && fileloc_isHeader (fl)) | |
1039 | { | |
1040 | voptgenerror (FLG_EXPORTTYPE, | |
1041 | message ("Type exported, but not specified: %s\n", n), | |
1042 | fl); | |
1043 | } | |
1044 | } | |
1045 | ||
1046 | cstring_free (n); | |
1047 | } | |
1048 | ||
1049 | uentryList | |
1050 | fixUentryList (idDeclList tl, qtype q) | |
1051 | { | |
1052 | uentryList f = uentryList_new (); | |
1053 | ||
1054 | idDeclList_elements (tl, i) | |
1055 | { | |
1056 | if (idDecl_isDefined (i)) | |
1057 | { | |
1058 | uentry ue; | |
1059 | uentry old; | |
1060 | ctype rt; | |
1061 | ||
1062 | (void) idDecl_fixBase (i, q); | |
1063 | ||
1064 | /* | |
1065 | ** implicit annotations | |
1066 | */ | |
1067 | ||
1068 | (void) fixStructDecl (i); | |
1069 | ||
1070 | ue = uentry_makeIdVariable (i); | |
1071 | rt = ctype_realType (uentry_getType (ue)); | |
1072 | ||
1073 | /* | |
1074 | ** where is this here??? | |
1075 | ||
1076 | if (ctype_isArray (rt) || ctype_isSU (rt)) | |
1077 | { | |
1078 | sRef_setAllocated (uentry_getSref (ue), uentry_whereDefined (ue)); | |
1079 | } | |
1080 | ||
1081 | ** | |
1082 | */ | |
1083 | ||
1084 | if (uentry_isValid (old = uentryList_lookupField (f, uentry_rawName (ue)))) | |
1085 | { | |
1086 | if (optgenerror (FLG_SYNTAX, | |
1087 | message ("Field name reused: %s", uentry_rawName (ue)), | |
1088 | uentry_whereDefined (ue))) | |
1089 | { | |
1090 | llgenmsg (message ("Previous use of %s", uentry_rawName (ue)), | |
1091 | uentry_whereDefined (old)); | |
1092 | } | |
1093 | } | |
1094 | ||
1095 | f = uentryList_add (f, ue); | |
1096 | } | |
1097 | } end_idDeclList_elements; | |
1098 | ||
1099 | idDeclList_free (tl); | |
1100 | return (f); | |
1101 | } | |
1102 | ||
1103 | /* | |
1104 | ** This is a hack to support unnamed struct/union fields as done by | |
1105 | ** Microsoft VC++. It is not supported by the ANSI standard. | |
1106 | ** | |
1107 | ** The inner fields are added to the outer structure. This is meaningful | |
1b8ae690 | 1108 | ** for nesting structs inside unions, but Splint does no related |
616915dd | 1109 | ** checking. |
1110 | */ | |
1111 | ||
1112 | uentryList | |
1113 | fixUnnamedDecl (qtype q) | |
1114 | { | |
1115 | ctype ct = ctype_realType (qtype_getType (q)); | |
1116 | ||
1117 | if (ctype_isStruct (ct) || ctype_isUnion (ct)) | |
1118 | { | |
288cbc5c | 1119 | return uentryList_single (uentry_makeUnnamedVariable (ct)); |
616915dd | 1120 | } |
f32c0a7e | 1121 | else if (ctype_isEnum (ct)) |
1122 | { | |
1123 | /* evans 2002-02-05: nothing to do for unnamed enum lists */ | |
1124 | return uentryList_undefined; | |
1125 | } | |
616915dd | 1126 | else |
b642ab7c | 1127 | { |
1128 | voptgenerror | |
1129 | (FLG_SYNTAX, | |
1130 | message ("Type name in field declarations: %s", qtype_unparse (q)), | |
1131 | g_currentloc); | |
616915dd | 1132 | } |
1133 | ||
1134 | return uentryList_undefined; | |
1135 | } | |
1136 | ||
1137 | void setStorageClass (storageClassCode sc) | |
1138 | { | |
1139 | storageClass = sc; | |
1140 | } | |
1141 | ||
1142 | void | |
1143 | setProcessingIterVars (uentry iter) | |
1144 | { | |
01a8227e | 1145 | s_processingIterVars = TRUE; |
616915dd | 1146 | currentIter = iter; |
1147 | saveIterParamNo = 0; | |
1148 | } | |
1149 | ||
1150 | void | |
1151 | setProcessingGlobalsList () | |
1152 | { | |
01a8227e | 1153 | s_processingGlobals = TRUE; |
616915dd | 1154 | fcnNoGlobals = FALSE; |
1155 | } | |
1156 | ||
1157 | static bool ProcessingGlobMods = FALSE; | |
1158 | ||
1159 | void | |
1160 | setProcessingGlobMods () | |
1161 | { | |
1162 | ProcessingGlobMods = TRUE; | |
1163 | } | |
1164 | ||
1165 | void | |
1166 | clearProcessingGlobMods () | |
1167 | { | |
1168 | ProcessingGlobMods = FALSE; | |
1169 | } | |
1170 | ||
1171 | bool | |
1172 | isProcessingGlobMods () | |
1173 | { | |
1174 | return (ProcessingGlobMods); | |
1175 | } | |
1176 | ||
1177 | static void resetGlobals (void) | |
1178 | { | |
01a8227e | 1179 | s_processingGlobals = FALSE; |
616915dd | 1180 | fcnNoGlobals = FALSE; |
1181 | } | |
1182 | ||
1183 | void | |
1184 | unsetProcessingGlobals () | |
1185 | { | |
01a8227e | 1186 | s_processingGlobals = FALSE; |
616915dd | 1187 | } |
1188 | ||
1189 | void | |
1190 | setProcessingVars (/*@only@*/ qtype q) | |
1191 | { | |
01a8227e | 1192 | s_processingVars = TRUE; |
616915dd | 1193 | qtype_free (processingType); |
1194 | processingType = q; | |
1195 | } | |
1196 | ||
1197 | static void | |
1198 | setGenericParamList (/*@dependent@*/ uentryList pm) | |
1199 | { | |
01a8227e | 1200 | s_processingParams = TRUE; |
616915dd | 1201 | saveParamList = pm; |
1202 | } | |
1203 | ||
1204 | void | |
e83c79ec | 1205 | setProcessingTypedef (qtype q) |
616915dd | 1206 | { |
01a8227e | 1207 | s_processingTypedef = TRUE; |
616915dd | 1208 | |
1209 | qtype_free (processingType); | |
1210 | processingType = q; | |
1211 | } | |
1212 | ||
1213 | void | |
1214 | unsetProcessingVars () | |
1215 | { | |
1216 | resetStorageClass (); | |
01a8227e | 1217 | s_processingVars = FALSE; |
616915dd | 1218 | } |
1219 | ||
1220 | void | |
7ebcc5bb | 1221 | oldStyleDoneParams () |
616915dd | 1222 | { |
01a8227e | 1223 | if (s_processingParams) |
616915dd | 1224 | { |
1225 | if (uentry_isInvalid (saveFunction)) | |
1226 | { | |
1227 | llbuglit ("unsetProcessingVars: no saved function\n"); | |
616915dd | 1228 | } |
1229 | else | |
1230 | { | |
28bf4b0b | 1231 | ctype ct = ctype_getReturnType (uentry_getType (saveFunction)); |
616915dd | 1232 | uentryList params = uentryList_copy (saveParamList); |
1233 | ctype ct2 = ctype_makeFunction (ct, params); | |
1234 | ||
1235 | uentry_setType (saveFunction, ct2); | |
01a8227e | 1236 | s_processingParams = FALSE; |
616915dd | 1237 | |
7ebcc5bb | 1238 | oldStyleCompleteFunction (saveFunction); |
616915dd | 1239 | saveFunction = uentry_undefined; |
1240 | resetGlobals (); | |
1241 | } | |
1242 | } | |
1243 | else | |
1244 | { | |
1245 | /* | |
1246 | ** If the paramlist used a type name, we could be here. | |
1247 | */ | |
1248 | ||
1249 | llfatalerror (message ("%q: Old-style function parameter list uses a " | |
1250 | "type name.", fileloc_unparse (g_currentloc))); | |
1251 | } | |
1252 | } | |
1253 | ||
1254 | void | |
1255 | checkDoneParams () | |
1256 | { | |
1257 | if (uentry_isValid (saveFunction)) | |
1258 | { | |
1259 | /* | |
1260 | ** old style declaration | |
1261 | */ | |
1262 | ||
28bf4b0b | 1263 | ctype ct = ctype_getReturnType (uentry_getType (saveFunction)); |
616915dd | 1264 | ctype ct2; |
1265 | ||
7ebcc5bb | 1266 | DPRINTF (("save function: %s", uentry_unparseFull (saveFunction))); |
1267 | ||
616915dd | 1268 | uentryList_elements (saveParamList, current) |
1269 | { | |
1270 | uentry_setType (current, ctype_int); /* all params are ints */ | |
1271 | } end_uentryList_elements; | |
1272 | ||
1273 | ct2 = ctype_makeParamsFunction (ct, uentryList_copy (saveParamList)); | |
1274 | ||
1275 | uentry_setType (saveFunction, ct2); | |
01a8227e | 1276 | s_processingParams = FALSE; |
616915dd | 1277 | |
1278 | oldStyleDeclareFunction (saveFunction); | |
1279 | saveFunction = uentry_undefined; | |
1280 | } | |
1281 | } | |
1282 | ||
e83c79ec | 1283 | void clabstract_declareType (/*@only@*/ exprNodeList decls, /*@only@*/ warnClause warn) |
1284 | { | |
01a8227e | 1285 | llassert (s_processingTypedef); |
e83c79ec | 1286 | |
80489f0a | 1287 | DPRINTF (("Declare type: %s", exprNodeList_unparse (decls))); |
1288 | ||
e83c79ec | 1289 | if (warnClause_isDefined (warn)) |
1290 | { | |
80489f0a | 1291 | DPRINTF (("Has a warn clause!")); |
1292 | DPRINTF (("Warn: %s", warnClause_unparse (warn))); | |
1293 | ||
e83c79ec | 1294 | exprNodeList_elements (decls, el) |
1295 | { | |
1296 | uentry ue = exprNode_getUentry (el); | |
1297 | cstring uname = uentry_getName (ue); | |
1298 | ||
1299 | DPRINTF (("Entry: %s", exprNode_unparse (el))); | |
1300 | ||
1301 | /* | |
1302 | ** Need to lookup again to make sure we have the right one... | |
1303 | */ | |
1304 | ||
15b3d2b2 | 1305 | ue = usymtab_lookupExposeGlob (uname); |
e83c79ec | 1306 | |
1307 | llassert (uentry_isValid (ue)); | |
1308 | llassert (uentry_isDatatype (ue)); | |
1309 | ||
1310 | DPRINTF (("Warning for %s: %s", | |
1311 | uentry_unparse (ue), warnClause_unparse (warn))); | |
1312 | ||
1313 | uentry_addWarning (ue, warnClause_copy (warn)); | |
80489f0a | 1314 | DPRINTF (("After add warning: %s", uentry_unparseFull (ue))); |
15b3d2b2 | 1315 | cstring_free (uname); |
e83c79ec | 1316 | } end_exprNodeList_elements; |
1317 | } | |
1318 | ||
1319 | warnClause_free (warn); | |
1320 | exprNodeList_free (decls); | |
1321 | unsetProcessingTypedef (); | |
1322 | } | |
1323 | ||
616915dd | 1324 | void |
1325 | unsetProcessingTypedef () | |
1326 | { | |
01a8227e | 1327 | s_processingTypedef = FALSE; |
616915dd | 1328 | } |
1329 | ||
1330 | void checkConstant (qtype t, idDecl id) | |
1331 | { | |
1332 | uentry e; | |
7534721d | 1333 | |
616915dd | 1334 | id = idDecl_fixBase (id, t); |
1335 | e = uentry_makeIdConstant (id); | |
7534721d | 1336 | |
616915dd | 1337 | reflectStorageClass (e); |
1338 | resetStorageClass (); | |
1339 | ||
d89a0c94 | 1340 | DPRINTF (("Constant: %s", uentry_unparseFull (e))); |
616915dd | 1341 | usymtab_supGlobalEntry (e); |
1342 | } | |
1343 | ||
1344 | void checkValueConstant (qtype t, idDecl id, exprNode e) | |
1345 | { | |
1346 | uentry ue; | |
1347 | ||
1348 | id = idDecl_fixBase (id, t); | |
1349 | ue = uentry_makeIdConstant (id); | |
1350 | reflectStorageClass (ue); | |
1351 | resetStorageClass (); | |
1352 | ||
1353 | if (exprNode_isDefined (e)) | |
1354 | { | |
1355 | if (!exprNode_matchType (uentry_getType (ue), e)) | |
1356 | { | |
1357 | (void) gentypeerror | |
1358 | (exprNode_getType (e), e, | |
1359 | uentry_getType (ue), exprNode_undefined, | |
1360 | message ("Constant %q initialized to type %t, expects %t: %s", | |
1361 | uentry_getName (ue), | |
1362 | exprNode_getType (e), | |
1363 | uentry_getType (ue), | |
1364 | exprNode_unparse (e)), | |
1365 | exprNode_loc (e)); | |
1366 | } | |
1367 | else | |
1368 | { | |
1369 | if (exprNode_hasValue (e)) | |
1370 | { | |
1371 | uentry_mergeConstantValue (ue, multiVal_copy (exprNode_getValue (e))); | |
1372 | } | |
b9904f57 | 1373 | else |
1374 | { | |
1375 | DPRINTF (("No value: %s", exprNode_unparse (e))); | |
1376 | } | |
616915dd | 1377 | } |
1378 | } | |
1379 | ||
b9904f57 | 1380 | DPRINTF (("Constant value: %s", uentry_unparseFull (ue))); |
616915dd | 1381 | usymtab_supGlobalEntry (ue); |
1382 | } | |
1383 | ||
01a8227e | 1384 | static void processVariable (idDecl t) |
616915dd | 1385 | { |
01a8227e | 1386 | uentry e; |
1387 | ctype ct; | |
7ebcc5bb | 1388 | |
01a8227e | 1389 | ct = ctype_realType (idDecl_getCtype (t)); |
1390 | ||
1391 | if (s_processingParams) | |
616915dd | 1392 | { |
1393 | cstring id = idDecl_getName (t); | |
01a8227e | 1394 | int paramno = uentryList_lookupRealName (saveParamList, id); |
28bf4b0b | 1395 | |
01a8227e | 1396 | if (paramno >= 0) |
616915dd | 1397 | { |
01a8227e | 1398 | uentry cparam = uentryList_getN (saveParamList, paramno); |
1399 | ||
1400 | DPRINTF (("Processing param: %s", uentry_unparseFull (cparam))); | |
1401 | uentry_setType (cparam, idDecl_getCtype (t)); | |
1402 | uentry_reflectQualifiers (cparam, idDecl_getQuals (t)); | |
1403 | uentry_setDeclaredOnly (cparam, context_getSaveLocation ()); | |
1404 | DPRINTF (("Processing param: %s", uentry_unparseFull (cparam))); | |
616915dd | 1405 | } |
1406 | else | |
1407 | { | |
01a8227e | 1408 | llfatalerrorLoc |
1409 | (message ("Old style declaration uses unlisted parameter: %s", | |
1410 | id)); | |
616915dd | 1411 | } |
1412 | } | |
01a8227e | 1413 | else |
616915dd | 1414 | { |
01a8227e | 1415 | fileloc loc; |
616915dd | 1416 | |
01a8227e | 1417 | if (context_inIterDef ()) |
616915dd | 1418 | { |
01a8227e | 1419 | cstring pname = makeParam (idDecl_observeId (t)); |
1420 | uentry p = usymtab_lookupSafe (pname); | |
1421 | ||
1422 | cstring_free (pname); | |
1423 | ||
1424 | if (uentry_isYield (p)) | |
616915dd | 1425 | { |
01a8227e | 1426 | e = uentry_makeParam (t, sRef_getParam (uentry_getSref (p))); |
1427 | uentry_checkYieldParam (p, e); | |
1428 | usymtab_supEntrySref (e); | |
1429 | return; | |
616915dd | 1430 | } |
1431 | } | |
01a8227e | 1432 | |
1433 | if ((hasSpecialCode () || argsUsed) | |
1434 | && ctype_isFunction (idDecl_getCtype (t))) | |
1435 | { | |
1436 | e = uentry_makeIdFunction (t); | |
1437 | reflectSpecialCode (e); | |
1438 | reflectArgsUsed (e); | |
1439 | } | |
616915dd | 1440 | else |
1441 | { | |
01a8227e | 1442 | e = uentry_makeIdVariable (t); |
1443 | } | |
1444 | ||
1445 | loc = uentry_whereDeclared (e); | |
1446 | ||
1447 | /* | |
1448 | if (context_inGlobalScope ()) | |
1449 | { | |
1450 | uentry_checkParams was here! | |
1451 | } | |
1452 | */ | |
1453 | ||
1454 | if (ctype_isFunction (uentry_getType (e))) | |
1455 | { | |
1456 | clabstract_prepareFunction (e); | |
1457 | } | |
1458 | ||
1459 | DPRINTF (("Superceding... %s", uentry_unparseFull (e))); | |
1460 | e = usymtab_supEntrySrefReturn (e); | |
1461 | DPRINTF (("After superceding... %s", uentry_unparseFull (e))); | |
1462 | ||
1463 | if (uentry_isExtern (e) && !context_inGlobalScope ()) | |
1464 | { | |
1465 | voptgenerror | |
1466 | (FLG_NESTEDEXTERN, | |
1467 | message ("Declaration using extern inside function scope: %q", | |
1468 | uentry_unparse (e)), | |
1469 | g_currentloc); | |
28bf4b0b | 1470 | |
01a8227e | 1471 | uentry_setDefined (e, fileloc_getExternal ()); |
1472 | sRef_setDefined (uentry_getSref (e), fileloc_getExternal ()); | |
1473 | } | |
1474 | ||
1475 | if (uentry_isFunction (e)) | |
1476 | { | |
1477 | if (!context_inXHFile ()) | |
616915dd | 1478 | { |
01a8227e | 1479 | checkParamNames (e); |
616915dd | 1480 | } |
01a8227e | 1481 | } |
1482 | ||
1483 | if (uentry_isVar (e) && uentry_isCheckedUnknown (e)) | |
1484 | { | |
1485 | sRef sr = uentry_getSref (e); | |
616915dd | 1486 | |
01a8227e | 1487 | if (sRef_isLocalVar (sr)) |
616915dd | 1488 | { |
01a8227e | 1489 | if (context_getFlag (FLG_IMPCHECKMODINTERNALS)) |
1490 | { | |
1491 | uentry_setCheckMod (e); | |
1492 | } | |
1493 | else | |
1494 | { | |
1495 | uentry_setUnchecked (e); | |
1496 | } | |
616915dd | 1497 | } |
01a8227e | 1498 | else if (sRef_isFileStatic (sr)) |
616915dd | 1499 | { |
01a8227e | 1500 | if (context_getFlag (FLG_IMPCHECKEDSTRICTSTATICS)) |
1501 | { | |
1502 | uentry_setCheckedStrict (e); | |
1503 | } | |
1504 | else if (context_getFlag (FLG_IMPCHECKEDSTATICS)) | |
28bf4b0b | 1505 | { |
01a8227e | 1506 | uentry_setChecked (e); |
1507 | } | |
1508 | else if (context_getFlag (FLG_IMPCHECKMODSTATICS)) | |
1509 | { | |
1510 | uentry_setCheckMod (e); | |
1511 | } | |
1512 | else | |
1513 | { | |
1514 | ; | |
28bf4b0b | 1515 | } |
616915dd | 1516 | } |
01a8227e | 1517 | else /* real global */ |
616915dd | 1518 | { |
01a8227e | 1519 | llassert (sRef_isRealGlobal (sr)); |
28bf4b0b | 1520 | |
01a8227e | 1521 | if (context_getFlag (FLG_IMPCHECKEDSTRICTGLOBALS)) |
616915dd | 1522 | { |
01a8227e | 1523 | uentry_setCheckedStrict (e); |
616915dd | 1524 | } |
01a8227e | 1525 | else if (context_getFlag (FLG_IMPCHECKEDGLOBALS)) |
616915dd | 1526 | { |
01a8227e | 1527 | uentry_setChecked (e); |
616915dd | 1528 | } |
01a8227e | 1529 | else if (context_getFlag (FLG_IMPCHECKMODGLOBALS)) |
616915dd | 1530 | { |
01a8227e | 1531 | uentry_setCheckMod (e); |
1532 | } | |
1533 | else | |
1534 | { | |
1535 | ; | |
616915dd | 1536 | } |
1537 | } | |
1538 | } | |
1539 | } | |
01a8227e | 1540 | } |
1541 | ||
1542 | void processNamedDecl (idDecl t) | |
1543 | { | |
1544 | if (qtype_isUndefined (processingType)) | |
1545 | { | |
1546 | processingType = qtype_create (ctype_int); | |
1547 | t = idDecl_fixBase (t, processingType); | |
1548 | ||
1549 | voptgenerror (FLG_IMPTYPE, | |
1550 | message ("No type before declaration name (implicit int type): %q", | |
1551 | idDecl_unparse (t)), | |
1552 | g_currentloc); | |
1553 | } | |
1554 | else | |
1555 | { | |
1556 | t = idDecl_fixBase (t, processingType); | |
1557 | } | |
1558 | ||
1559 | DPRINTF (("Declare: %s", idDecl_unparse (t))); | |
1560 | ||
1561 | if (s_processingGlobals) | |
1562 | { | |
1563 | cstring id = idDecl_getName (t); | |
1564 | uentry ue = usymtab_lookupSafe (id); | |
1565 | ||
1566 | if (!uentry_isValid (ue)) | |
1567 | { | |
1568 | llerror (FLG_UNRECOG, | |
1569 | message ("Variable used in globals list is undeclared: %s", id)); | |
1570 | } | |
1571 | else | |
1572 | { | |
1573 | if (!ctype_match (uentry_getType (ue), idDecl_getCtype (t))) | |
1574 | { | |
1575 | voptgenerror | |
1576 | (FLG_INCONDEFS, | |
1577 | message ("Variable %s used in globals list declared %s, " | |
1578 | "but listed as %s", | |
1579 | id, ctype_unparse (uentry_getType (ue)), | |
1580 | ctype_unparse (idDecl_getCtype (t))), | |
1581 | g_currentloc); | |
1582 | } | |
1583 | else | |
1584 | { | |
1585 | sRef sr = sRef_copy (uentry_getSref (ue)); | |
1586 | reflectGlobalQualifiers (sr, idDecl_getQuals (t)); | |
1587 | } | |
1588 | } | |
1589 | } | |
1590 | else if (s_processingVars) | |
1591 | { | |
1592 | processVariable (t); | |
1593 | } | |
1594 | else if (s_processingTypedef) | |
616915dd | 1595 | { |
1596 | ctype ct = idDecl_getCtype (t); | |
1597 | uentry e; | |
28bf4b0b | 1598 | |
616915dd | 1599 | DPRINTF (("Processing typedef: %s", ctype_unparse (ct))); |
1600 | ||
1601 | e = uentry_makeIdDatatype (t); | |
1602 | ||
1603 | if (cstring_equal (idDecl_getName (t), context_getBoolName ())) { | |
1604 | ctype rt = ctype_realType (ct); | |
1605 | ||
1606 | if (ctype_isEnum (rt)) { | |
1607 | ; | |
1608 | } else { | |
1609 | if (!(ctype_isInt (rt) | |
1610 | || ctype_isUnknown (rt) | |
1611 | || ctype_isChar (rt))) { | |
1612 | (void) llgenerror | |
1613 | (FLG_BOOLTYPE, | |
1614 | message ("Boolean type %s defined using non-standard type %s (integral, char or enum type expected)", | |
1615 | context_getBoolName (), | |
1616 | ctype_unparse (ct)), | |
1617 | uentry_whereLast (e)); | |
1618 | } | |
1619 | ||
1620 | ct = ctype_bool; | |
1621 | uentry_setType (e, ct); | |
1622 | } | |
1623 | } | |
1624 | ||
1625 | reflectStorageClass (e); | |
1626 | checkTypeDecl (e, ct); | |
1627 | ||
1628 | e = usymtab_supReturnTypeEntry (e); | |
616915dd | 1629 | } |
1630 | else | |
1631 | { | |
1632 | llparseerror (message ("Suspect missing struct or union keyword: %q", | |
1633 | idDecl_unparse (t))); | |
1634 | } | |
1635 | ||
1636 | } | |
1637 | ||
1638 | /* | |
1639 | ** moved from grammar | |
1640 | */ | |
1641 | ||
1642 | static idDecl fixStructDecl (/*@returned@*/ idDecl d) | |
1643 | { | |
1644 | if (ctype_isVisiblySharable (idDecl_getCtype (d)) | |
1645 | && context_getFlag (FLG_STRUCTIMPONLY)) | |
1646 | { | |
1647 | if (!qualList_hasAliasQualifier (idDecl_getQuals (d))) | |
1648 | { | |
1649 | if (qualList_hasExposureQualifier (idDecl_getQuals (d))) | |
1650 | { | |
1651 | idDecl_addQual (d, qual_createDependent ()); | |
1652 | } | |
1653 | else | |
1654 | { | |
1655 | idDecl_addQual (d, qual_createImpOnly ()); | |
1656 | } | |
1657 | } | |
1658 | } | |
1659 | ||
1660 | return d; | |
1661 | } | |
1662 | ||
1663 | ctype | |
1664 | declareUnnamedStruct (/*@only@*/ uentryList f) | |
1665 | { | |
28bf4b0b | 1666 | DPRINTF (("Unnamed struct: %s", uentryList_unparse (f))); |
1667 | ||
616915dd | 1668 | if (context_maybeSet (FLG_NUMSTRUCTFIELDS)) |
1669 | { | |
1670 | int num = uentryList_size (f); | |
1671 | int max = context_getValue (FLG_NUMSTRUCTFIELDS); | |
1672 | ||
1673 | if (num > max) | |
1674 | { | |
1675 | voptgenerror | |
1676 | (FLG_NUMSTRUCTFIELDS, | |
1677 | message ("Structure declared with %d fields " | |
1678 | "(limit is set to %d)", | |
1679 | num, max), | |
1680 | g_currentloc); | |
1681 | } | |
1682 | } | |
1683 | ||
1684 | return (ctype_createUnnamedStruct (f)); | |
1685 | } | |
1686 | ||
1687 | ctype | |
1688 | declareUnnamedUnion (/*@only@*/ uentryList f) | |
1689 | { | |
288cbc5c | 1690 | DPRINTF (("Unnamed union: %s", uentryList_unparse (f))); |
1691 | ||
616915dd | 1692 | if (context_maybeSet (FLG_NUMSTRUCTFIELDS)) |
1693 | { | |
1694 | int num = uentryList_size (f); | |
1695 | int max = context_getValue (FLG_NUMSTRUCTFIELDS); | |
1696 | ||
1697 | if (num > max) | |
1698 | { | |
1699 | voptgenerror | |
1700 | (FLG_NUMSTRUCTFIELDS, | |
1701 | message ("Union declared with %d fields " | |
1702 | "(limit is set to %d)", | |
1703 | num, max), | |
1704 | g_currentloc); | |
1705 | } | |
1706 | } | |
1707 | ||
1708 | return (ctype_createUnnamedUnion (f)); | |
1709 | } | |
1710 | ||
1711 | ctype declareStruct (cstring id, /*@only@*/ uentryList f) | |
1712 | { | |
1713 | ctype ct; | |
1714 | uentry ue; | |
1715 | int num = uentryList_size (f); | |
1716 | ||
288cbc5c | 1717 | DPRINTF (("Declare struct: %s / %s [%d]", id, uentryList_unparse (f), |
1718 | uentryList_size (f))); | |
28bf4b0b | 1719 | |
616915dd | 1720 | ct = ctype_createStruct (cstring_copy (id), f); |
28bf4b0b | 1721 | |
1722 | DPRINTF (("Ctype: %s", ctype_unparse (ct))); | |
1723 | ||
616915dd | 1724 | ue = uentry_makeStructTagLoc (id, ct); |
1725 | ||
28bf4b0b | 1726 | DPRINTF (("ue: %s", uentry_unparseFull (ue))); |
1727 | ||
616915dd | 1728 | if (context_maybeSet (FLG_NUMSTRUCTFIELDS)) |
1729 | { | |
1730 | int max = context_getValue (FLG_NUMSTRUCTFIELDS); | |
1731 | ||
1732 | if (num > max) | |
1733 | { | |
1734 | voptgenerror | |
1735 | (FLG_NUMSTRUCTFIELDS, | |
1736 | message ("Structure %q declared with %d fields " | |
1737 | "(limit is set to %d)", | |
1738 | uentry_getName (ue), num, max), | |
1739 | uentry_whereLast (ue)); | |
1740 | } | |
1741 | } | |
1742 | ||
1743 | return (usymtab_supTypeEntry (ue)); | |
1744 | } | |
1745 | ||
1746 | ctype declareUnion (cstring id, uentryList f) | |
1747 | { | |
1748 | ctype ct; | |
1749 | uentry ue; | |
1750 | int num = uentryList_size (f); | |
1751 | ||
1752 | ct = ctype_createUnion (cstring_copy (id), f); | |
1753 | ue = uentry_makeUnionTagLoc (id, ct); | |
1754 | ||
1755 | if (context_maybeSet (FLG_NUMSTRUCTFIELDS)) | |
1756 | { | |
1757 | int max = context_getValue (FLG_NUMSTRUCTFIELDS); | |
1758 | ||
1759 | if (num > max) | |
1760 | { | |
1761 | voptgenerror | |
1762 | (FLG_NUMSTRUCTFIELDS, | |
1763 | message ("Union %q declared with %d fields " | |
1764 | "(limit is set to %d)", | |
1765 | uentry_getName (ue), num, max), | |
1766 | uentry_whereLast (ue)); | |
1767 | } | |
1768 | } | |
1769 | ||
1770 | return (usymtab_supTypeEntry (ue)); | |
1771 | } | |
1772 | ||
1773 | ctype handleStruct (/*@only@*/ cstring id) | |
1774 | { | |
1775 | if (usymtab_existsStructTag (id)) | |
1776 | { | |
1777 | ctype ct = uentry_getAbstractType (usymtab_lookupStructTag (id)); | |
1778 | ||
1779 | cstring_free (id); | |
1780 | return ct; | |
1781 | } | |
1782 | else | |
1783 | { | |
1784 | return (ctype_createForwardStruct (id)); | |
1785 | } | |
1786 | } | |
1787 | ||
1788 | ctype handleUnion (/*@only@*/ cstring id) | |
1789 | { | |
1790 | if (usymtab_existsUnionTag (id)) | |
1791 | { | |
1792 | ctype ret = uentry_getAbstractType (usymtab_lookupUnionTag (id)); | |
1793 | cstring_free (id); | |
1794 | return (ret); | |
1795 | } | |
1796 | else | |
1797 | { | |
1798 | return (ctype_createForwardUnion (id)); | |
1799 | } | |
1800 | } | |
1801 | ||
1802 | ctype | |
1803 | handleEnum (cstring id) | |
1804 | { | |
1805 | if (usymtab_existsEnumTag (id)) | |
1806 | { | |
1807 | ctype ret = uentry_getAbstractType (usymtab_lookupEnumTag (id)); | |
1808 | cstring_free (id); | |
1809 | return ret; | |
1810 | } | |
1811 | else | |
1812 | { | |
1813 | return (declareEnum (id, enumNameList_new ())); | |
1814 | } | |
1815 | } | |
1816 | ||
1817 | bool processingIterVars (void) | |
1818 | { | |
01a8227e | 1819 | return s_processingIterVars; |
616915dd | 1820 | } |
1821 | ||
1822 | uentry getCurrentIter (void) | |
1823 | { | |
1824 | return currentIter; | |
1825 | } | |
1826 | ||
1827 | static bool flipOldStyle = FALSE; | |
1828 | static bool flipNewStyle = TRUE; | |
1829 | ||
1830 | void setFlipOldStyle () { flipOldStyle = TRUE; } | |
1831 | bool isFlipOldStyle () { return flipOldStyle; } | |
1832 | bool isNewStyle () { return flipNewStyle; } | |
1833 | void setNewStyle () { flipNewStyle = TRUE; } | |
1834 | ||
1835 | /*@dependent@*/ uentryList handleParamIdList (/*@dependent@*/ uentryList params) | |
1836 | { | |
1837 | int paramno = 0; | |
1838 | ||
1839 | /* | |
1840 | ** this is a really YUCKY hack to handle old style | |
1841 | ** declarations. | |
1842 | */ | |
1843 | ||
1844 | voptgenerror (FLG_OLDSTYLE, | |
1845 | cstring_makeLiteral ("Old style function declaration"), | |
1846 | g_currentloc); | |
1847 | ||
7ebcc5bb | 1848 | DPRINTF (("Handle old style params: %s", uentryList_unparseFull (params))); |
1849 | ||
616915dd | 1850 | uentryList_elements (params, current) |
1851 | { | |
1852 | uentry_setParam (current); | |
6970c11b | 1853 | uentry_setSref (current, sRef_makeParam (paramno, ctype_unknown, stateInfo_makeLoc (uentry_whereLast (current)))); |
616915dd | 1854 | paramno++; |
1855 | } end_uentryList_elements; | |
1856 | ||
1857 | setGenericParamList (params); | |
1858 | g_expectingTypeName = TRUE; | |
1859 | ||
1860 | return params; | |
1861 | } | |
1862 | ||
1863 | /*@dependent@*/ uentryList handleParamTypeList (/*@returned@*/ uentryList params) | |
1864 | { | |
1865 | if (flipOldStyle) | |
1866 | { | |
1867 | uentryList_fixMissingNames (params); | |
1868 | ||
1869 | voptgenerror (FLG_OLDSTYLE, | |
1870 | cstring_makeLiteral ("Old style function declaration."), | |
1871 | g_currentloc); | |
1872 | ||
1873 | setGenericParamList (params); | |
1874 | flipOldStyle = FALSE; | |
1875 | g_expectingTypeName = TRUE; | |
1876 | } | |
1877 | ||
1878 | return (params); | |
1879 | } | |
1880 | ||
1881 | void | |
1882 | doVaDcl () | |
1883 | { | |
1884 | ctype c = ctype_unknown; | |
1885 | cstring id = cstring_makeLiteral ("va_alist"); | |
1886 | uentry e; | |
1887 | ||
01a8227e | 1888 | if (s_processingParams) |
616915dd | 1889 | { |
1890 | int i = uentryList_lookupRealName (saveParamList, id); | |
1891 | ||
1892 | if (i >= 0) | |
1893 | { | |
6970c11b | 1894 | fileloc loc = context_getSaveLocation (); |
1895 | e = uentry_makeVariableSrefParam (id, c, loc, sRef_makeParam (i, c, stateInfo_makeLoc (loc))); | |
616915dd | 1896 | } |
1897 | else | |
1898 | { | |
1899 | e = uentry_undefined; /* suppress gcc message */ | |
1900 | llfatalerrorLoc (cstring_makeLiteral ("va_dcl used without va_alist")); | |
1901 | } | |
1902 | } | |
1903 | else | |
1904 | { | |
1905 | llerror (FLG_SYNTAX, cstring_makeLiteral ("va_dcl used outside of function declaration")); | |
1906 | e = uentry_makeVariableLoc (id, c); | |
1907 | } | |
1908 | ||
1909 | cstring_free (id); | |
1910 | uentry_setUsed (e, g_currentloc); | |
1911 | usymtab_supEntrySref (e); | |
1912 | } | |
1913 | ||
28bf4b0b | 1914 | /*@exposed@*/ sRef modListPointer (/*@exposed@*/ sRef s) |
616915dd | 1915 | { |
1916 | ctype ct = sRef_getType (s); | |
1917 | ctype rt = ctype_realType (ct); | |
1918 | ||
1919 | if (ctype_isAP (rt)) | |
1920 | { | |
1921 | if (context_inHeader () && ctype_isAbstract (ct)) | |
1922 | { | |
1923 | voptgenerror | |
1924 | (FLG_ABSTRACT, | |
1925 | message | |
1926 | ("Modifies clause in header file dereferences abstract " | |
1927 | "type %s (interface modifies clause should not depend " | |
1928 | "on or expose type representation): %q", | |
1929 | ctype_unparse (ct), | |
1930 | sRef_unparse (s)), | |
1931 | g_currentloc); | |
1932 | } | |
1933 | ||
1934 | return (sRef_constructPointer (s)); | |
1935 | } | |
1936 | else | |
1937 | { | |
1938 | if (ctype_isKnown (rt)) | |
1939 | { | |
1940 | voptgenerror | |
1941 | (FLG_TYPE, | |
1942 | message ("Implementation modifies clause dereferences non-pointer (type %s): %q", | |
1943 | ctype_unparse (rt), | |
1944 | sRef_unparse (s)), | |
1945 | g_currentloc); | |
1946 | } | |
1947 | ||
1948 | return s; | |
1949 | } | |
1950 | } | |
1951 | ||
1952 | /*@exposed@*/ sRef modListFieldAccess (sRef s, cstring f) | |
1953 | { | |
1954 | ctype ct = sRef_getType (s); | |
1955 | ctype rt = ctype_realType (ct); | |
1956 | ||
1957 | if (ctype_isStructorUnion (rt)) | |
1958 | { | |
1959 | uentry tf = uentryList_lookupField (ctype_getFields (rt), f); | |
1960 | ||
1961 | if (uentry_isUndefined (tf)) | |
1962 | { | |
1963 | voptgenerror (FLG_TYPE, | |
1964 | message ("Modifies list accesses non-existent " | |
1965 | "field %s of %t: %q", f, ct, | |
1966 | sRef_unparse (s)), | |
1967 | g_currentloc); | |
1968 | ||
1969 | cstring_free (f); | |
1970 | return sRef_undefined; | |
1971 | } | |
1972 | else | |
1973 | { | |
1974 | if (ctype_isAbstract (ct) && context_inHeader ()) | |
1975 | { | |
1976 | voptgenerror | |
1977 | (FLG_ABSTRACT, | |
1978 | message | |
1979 | ("Modifies clause in header file accesses abstract " | |
1980 | "type %s (interface modifies clause should not depend " | |
1981 | "on or expose type representation): %q", | |
1982 | ctype_unparse (ct), | |
1983 | sRef_unparse (s)), | |
1984 | g_currentloc); | |
1985 | } | |
1986 | } | |
1987 | ||
1988 | cstring_markOwned (f); | |
1989 | return (sRef_makeField (s, f)); | |
1990 | } | |
1991 | else | |
1992 | { | |
1993 | voptgenerror | |
1994 | (FLG_TYPE, | |
1995 | message ("Modifies clause dereferences non-pointer (type %s): %q", | |
1996 | ctype_unparse (rt), | |
1997 | sRef_unparse (s)), | |
1998 | g_currentloc); | |
1999 | ||
2000 | cstring_free (f); | |
2001 | return s; | |
2002 | } | |
2003 | } | |
2004 | ||
28bf4b0b | 2005 | /*@dependent@*/ sRef clabstract_unrecognizedGlobal (cstring s) |
616915dd | 2006 | { |
2007 | if (cstring_equalLit (s, "nothing")) | |
2008 | { | |
2009 | return sRef_makeNothing (); | |
2010 | } | |
2011 | else if (cstring_equalLit (s, "internalState")) | |
2012 | { | |
2013 | return sRef_makeInternalState (); | |
2014 | } | |
2015 | else if (cstring_equalLit (s, "fileSystem") | |
2016 | || cstring_equalLit (s, "systemState")) | |
2017 | { | |
2018 | return sRef_makeSystemState (); | |
2019 | } | |
2020 | else | |
2021 | { | |
2022 | voptgenerror | |
2023 | (FLG_UNRECOG, | |
2024 | message ("Unrecognized identifier in globals list: %s", s), | |
2025 | g_currentloc); | |
2026 | ||
2027 | return sRef_undefined; | |
2028 | } | |
2029 | } | |
2030 | ||
2031 | /*@exposed@*/ sRef modListArrowAccess (sRef s, cstring f) | |
2032 | { | |
2033 | ctype ct = sRef_getType (s); | |
2034 | ctype rt = ctype_realType (ct); | |
2035 | ||
2036 | if (ctype_isRealPointer (rt)) | |
2037 | { | |
2038 | ctype b = ctype_baseArrayPtr (rt); | |
2039 | ctype rb = ctype_realType (b); | |
2040 | ||
2041 | if (ctype_isStructorUnion (rb)) | |
2042 | { | |
2043 | uentry tf = uentryList_lookupField (ctype_getFields (rb), f); | |
2044 | ||
2045 | if (uentry_isUndefined (tf)) | |
2046 | { | |
2047 | voptgenerror (FLG_TYPE, | |
2048 | message ("Modifies list arrow accesses non-existent " | |
2049 | "field %s of %t: %q", f, b, | |
2050 | sRef_unparse (s)), | |
2051 | g_currentloc); | |
2052 | ||
2053 | cstring_free (f); | |
2054 | return sRef_undefined; | |
2055 | } | |
2056 | else | |
2057 | { | |
2058 | if (context_inHeader ()) | |
2059 | { | |
2060 | if (ctype_isAbstract (b)) | |
2061 | { | |
2062 | voptgenerror | |
2063 | (FLG_ABSTRACT, | |
2064 | message | |
2065 | ("Modifies clause in header file arrow accesses abstract " | |
2066 | "type %s (interface modifies clause should not depend " | |
2067 | "on or expose type representation): %q", | |
2068 | ctype_unparse (b), | |
2069 | sRef_unparse (s)), | |
2070 | g_currentloc); | |
2071 | } | |
2072 | } | |
2073 | else | |
2074 | { | |
146e25eb | 2075 | if (ctype_isAbstract (rt)) |
616915dd | 2076 | { |
2077 | voptgenerror | |
2078 | (FLG_ABSTRACT, | |
2079 | message | |
146e25eb | 2080 | ("Modifies clause arrow accesses inaccessible abstract " |
616915dd | 2081 | "type %s (interface modifies clause should not depend " |
2082 | "on or expose type representation): %q", | |
146e25eb | 2083 | ctype_unparse (rt), |
616915dd | 2084 | sRef_unparse (s)), |
2085 | g_currentloc); | |
2086 | } | |
2087 | } | |
2088 | } | |
2089 | ||
2090 | cstring_markOwned (f); | |
2091 | return (sRef_makeArrow (s, f)); | |
2092 | } | |
2093 | else | |
2094 | { | |
2095 | voptgenerror | |
2096 | (FLG_TYPE, | |
2097 | message ("Modifies clause arrow accesses pointer to " | |
2098 | "non-structure (type %s): %q", | |
2099 | ctype_unparse (rt), | |
2100 | sRef_unparse (s)), | |
2101 | g_currentloc); | |
2102 | } | |
2103 | } | |
2104 | else | |
2105 | { | |
2106 | voptgenerror | |
2107 | (FLG_TYPE, | |
2108 | message ("Modifies clause arrow accesses non-pointer (type %s): %q", | |
2109 | ctype_unparse (rt), | |
2110 | sRef_unparse (s)), | |
2111 | g_currentloc); | |
2112 | } | |
2113 | ||
2114 | cstring_free (f); | |
2115 | return s; | |
2116 | } | |
2117 | ||
28bf4b0b | 2118 | sRef checkStateClausesId (uentry ue) |
616915dd | 2119 | { |
2120 | cstring s = uentry_rawName (ue); | |
2121 | ||
28bf4b0b | 2122 | if (sRef_isFileOrGlobalScope (uentry_getSref (ue))) |
616915dd | 2123 | { |
2124 | voptgenerror | |
28bf4b0b | 2125 | (FLG_COMMENTERROR, |
1b8ae690 | 2126 | message ("Global variable %s used state clause. (Global variables " |
2127 | "are not recognized in state clauses. If there is " | |
616915dd | 2128 | "sufficient interest in support for this, it may be " |
2129 | "added to a future release. Send mail to " | |
155af98d | 2130 | "info@splint.org.)", |
616915dd | 2131 | s), |
2132 | g_currentloc); | |
2133 | ||
2134 | return sRef_undefined; | |
2135 | } | |
2136 | else | |
2137 | { | |
2138 | if (cstring_equalLit (s, "result")) | |
2139 | { | |
2140 | if (optgenerror | |
2141 | (FLG_SYNTAX, | |
2142 | message ("Special clause list uses %s which is a variable and has special " | |
2143 | "meaning in a modifies list. (Special meaning assumed.)", s), | |
2144 | g_currentloc)) | |
2145 | { | |
2146 | uentry_showWhereDeclared (ue); | |
2147 | } | |
2148 | } | |
2149 | ||
2150 | return uentry_getSref (ue); | |
2151 | } | |
2152 | } | |
9280addf | 2153 | /*drl:1/19/2001 |
2154 | oops to 1/8/2000 | |
2155 | date is wronge .. | |
2156 | don;t know what the real date is... | |
2157 | ||
2158 | */ | |
616915dd | 2159 | |
2160 | /*drl | |
2161 | added 1/8/2000 | |
2162 | based on checkSpecClausesId | |
2163 | called by grammar | |
2164 | */ | |
b37cf05e | 2165 | |
616915dd | 2166 | sRef checkbufferConstraintClausesId (uentry ue) |
2167 | { | |
2168 | cstring s = uentry_rawName (ue); | |
08eb3d0e | 2169 | |
616915dd | 2170 | if (cstring_equalLit (s, "result")) |
2171 | { | |
2172 | if (optgenerror | |
2173 | (FLG_SYNTAX, | |
08eb3d0e | 2174 | message ("Function clause list uses %s which is a variable and has special " |
616915dd | 2175 | "meaning in a modifies list. (Special meaning assumed.)", s), |
2176 | g_currentloc)) | |
2177 | { | |
2178 | uentry_showWhereDeclared (ue); | |
2179 | } | |
2180 | } | |
2181 | ||
b9904f57 | 2182 | DPRINTF (("constrant id: %s", uentry_unparseFull (ue))); |
08eb3d0e | 2183 | return sRef_saveCopy (uentry_getSref (ue)); /*@i523 why the saveCopy? */ |
616915dd | 2184 | } |
2185 | ||
2186 | void checkModifiesId (uentry ue) | |
2187 | { | |
2188 | cstring s = uentry_rawName (ue); | |
2189 | ||
2190 | if (cstring_equalLit (s, "nothing") | |
2191 | || cstring_equalLit (s, "internalState") | |
2192 | || cstring_equalLit (s, "systemState") | |
2193 | || (cstring_equalLit (s, "fileSystem"))) | |
2194 | { | |
2195 | if (optgenerror | |
2196 | (FLG_SYNTAX, | |
2197 | message ("Modifies list uses %s which is a variable and has special " | |
2198 | "meaning in a modifies list. (Special meaning assumed.)", s), | |
2199 | g_currentloc)) | |
2200 | { | |
2201 | uentry_showWhereDeclared (ue); | |
2202 | } | |
2203 | } | |
2204 | } | |
2205 | ||
2206 | /*@exposed@*/ sRef fixModifiesId (cstring s) | |
2207 | { | |
2208 | sRef ret; | |
2209 | cstring pname = makeParam (s); | |
2210 | uentry ue = usymtab_lookupSafe (pname); | |
2211 | ||
2212 | cstring_free (pname); | |
2213 | ||
2214 | if (cstring_equalLit (s, "nothing")) | |
2215 | { | |
2216 | ret = sRef_makeNothing (); | |
2217 | } | |
2218 | else if (cstring_equalLit (s, "internalState")) | |
2219 | { | |
2220 | ret = sRef_makeInternalState (); | |
2221 | } | |
2222 | else if (cstring_equalLit (s, "fileSystem") | |
2223 | || cstring_equalLit (s, "systemState")) | |
2224 | { | |
2225 | ret = sRef_makeSystemState (); | |
2226 | } | |
2227 | else | |
2228 | { | |
2229 | ret = sRef_undefined; | |
2230 | } | |
2231 | ||
2232 | if (sRef_isValid (ret)) | |
2233 | { | |
2234 | if (uentry_isValid (ue)) | |
2235 | { | |
2236 | voptgenerror | |
2237 | (FLG_SYNTAX, | |
2238 | message ("Modifies list uses %s which is a parameter and has special " | |
2239 | "meaning in a modifies list. (Special meaning assumed.)", s), | |
2240 | g_currentloc); | |
2241 | } | |
2242 | } | |
2243 | else | |
2244 | { | |
2245 | if (uentry_isValid (ue)) | |
2246 | { | |
2247 | ret = uentry_getSref (ue); | |
2248 | } | |
2249 | else | |
2250 | { | |
abd7f895 | 2251 | fileloc loc = fileloc_decColumn (g_currentloc, size_toInt (cstring_length (s))); |
616915dd | 2252 | ret = sRef_undefined; |
2253 | ||
2254 | voptgenerror | |
2255 | (FLG_UNRECOG, | |
2256 | message ("Unrecognized identifier in modifies comment: %s", s), | |
2257 | loc); | |
2258 | ||
2259 | fileloc_free (loc); | |
2260 | } | |
2261 | } | |
2262 | ||
2263 | return ret; | |
2264 | } | |
2265 | ||
28bf4b0b | 2266 | sRef fixStateClausesId (cstring s) |
616915dd | 2267 | { |
2268 | sRef ret; | |
2269 | cstring pname = makeParam (s); | |
2270 | uentry ue = usymtab_lookupSafe (pname); | |
2271 | ||
2272 | cstring_free (pname); | |
2273 | ||
2274 | if (cstring_equalLit (s, "result")) | |
2275 | { | |
b072092f | 2276 | ret = sRef_makeResult (ctype_unknown); |
616915dd | 2277 | } |
2278 | else | |
2279 | { | |
2280 | ret = sRef_undefined; | |
2281 | } | |
2282 | ||
2283 | if (sRef_isValid (ret)) | |
2284 | { | |
2285 | if (uentry_isValid (ue)) | |
2286 | { | |
2287 | voptgenerror | |
2288 | (FLG_SYNTAX, | |
d9a28762 | 2289 | message ("Function clause uses %s which is a parameter and has special " |
2290 | "meaning in a function clause. (Special meaning assumed.)", s), | |
616915dd | 2291 | g_currentloc); |
2292 | } | |
2293 | } | |
2294 | else | |
2295 | { | |
2296 | if (uentry_isValid (ue)) | |
2297 | { | |
2298 | ret = uentry_getSref (ue); | |
2299 | ||
28bf4b0b | 2300 | if (sRef_isFileOrGlobalScope (ret)) |
616915dd | 2301 | { |
2302 | voptgenerror | |
2303 | (FLG_SYNTAX, | |
d9a28762 | 2304 | message ("Global variable %s used in function clause. (Global variables " |
2305 | "are not recognized in function clauses. If there is " | |
616915dd | 2306 | "sufficient interest in support for this, it may be " |
2307 | "added to a future release. Send mail to " | |
155af98d | 2308 | "info@splint.org.)", |
616915dd | 2309 | s), |
2310 | g_currentloc); | |
2311 | ||
2312 | ret = sRef_undefined; | |
2313 | } | |
2314 | } | |
2315 | else | |
2316 | { | |
86d93ed3 | 2317 | /*@i222@*/ |
2318 | /*drl handle structure invariant */ | |
2319 | ||
2320 | /*@i222@*/ | |
2321 | /*check that we're in a structure */ | |
4dd72714 | 2322 | # if 0\r |
2323 | /*@unused@*/ uentryList ueL; | |
86d93ed3 | 2324 | /*@unused@*/ uentry ue2; |
4dd72714 | 2325 | /*@unused@*/ ctype ct;\r |
2326 | # endif | |
abd7f895 | 2327 | fileloc loc = fileloc_decColumn (g_currentloc, size_toInt (cstring_length (s))); |
616915dd | 2328 | ret = sRef_undefined; |
4dd72714 | 2329 | # if 0 |
86d93ed3 | 2330 | /*drl commenting this out for now |
2331 | ct = context_getLastStruct ( ct ); | |
2332 | ||
2333 | llassert( ctype_isStruct(ct) ); | |
2334 | ||
2335 | ueL = ctype_getFields (ct); | |
2336 | ||
2337 | ue2 = uentryList_lookupField (ueL, s); | |
2338 | ||
2339 | if (!uentry_isUndefined(ue2) ) | |
2340 | { | |
2341 | ret = uentry_getSref(ue2); | |
2342 | ||
2343 | DPRINTF(( | |
2344 | message("Got field in structure in the annotation constraint: %s (or sref: %s)", s, sRef_unparse(ret) ) | |
2345 | )); | |
2346 | ||
2347 | return ret; | |
2348 | } | |
4dd72714 | 2349 | */\r |
2350 | # endif\r | |
2351 | ||
616915dd | 2352 | voptgenerror |
2353 | (FLG_UNRECOG, | |
d9a28762 | 2354 | message ("Unrecognized identifier in function clause: %s", s), |
616915dd | 2355 | loc); |
2356 | ||
2357 | fileloc_free (loc); | |
2358 | } | |
2359 | } | |
2360 | ||
2361 | return ret; | |
2362 | } | |
2363 | ||
28bf4b0b | 2364 | sRef modListArrayFetch (/*@exposed@*/ sRef s, /*@unused@*/ sRef mexp) |
616915dd | 2365 | { |
2366 | ctype ct = sRef_getType (s); | |
2367 | ctype rt = ctype_realType (ct); | |
2368 | ||
2369 | if (ctype_isAP (rt)) | |
2370 | { | |
2371 | if (context_inHeader () && ctype_isAbstract (ct)) | |
2372 | { | |
2373 | voptgenerror | |
2374 | (FLG_ABSTRACT, | |
2375 | message | |
2376 | ("Modifies clause in header file indexes abstract " | |
2377 | "type %s (interface modifies clause should not depend " | |
2378 | "on or expose type representation): %q", | |
2379 | ctype_unparse (ct), | |
2380 | sRef_unparse (s)), | |
2381 | g_currentloc); | |
2382 | } | |
2383 | ||
2384 | return (sRef_makeAnyArrayFetch (s)); | |
2385 | } | |
2386 | else | |
2387 | { | |
2388 | voptgenerror | |
2389 | (FLG_TYPE, | |
2390 | message | |
2391 | ("Implementation modifies clause uses array fetch on non-array (type %s): %q", | |
2392 | ctype_unparse (ct), sRef_unparse (s)), | |
2393 | g_currentloc); | |
2394 | return s; | |
2395 | } | |
2396 | } | |
2397 | ||
28bf4b0b | 2398 | static void clabstract_prepareFunction (uentry e) |
2399 | { | |
2400 | uentry_checkParams (e); | |
2401 | DPRINTF (("After prepare: %s", uentry_unparseFull (e))); | |
2402 | } | |
2403 | ||
2404 | sRef clabstract_checkGlobal (exprNode e) | |
2405 | { | |
2406 | sRef s; | |
2407 | llassert (exprNode_isInitializer (e)); | |
2408 | ||
2409 | s = exprNode_getSref (e); | |
2410 | DPRINTF (("Initializer: %s -> %s", exprNode_unparse (e), sRef_unparse (s))); | |
2411 | ||
2412 | exprNode_free (e); | |
2413 | return sRef_copy (s); | |
2414 | } |