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616915dd | 1 | /* |
11db3170 | 2 | ** Splint - annotation-assisted static program checker |
c59f5181 | 3 | ** Copyright (C) 1994-2003 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" |
b73d1009 | 32 | # include "basic.h" |
616915dd | 33 | # include "cgrammar.h" |
616915dd | 34 | # include "usymtab_interface.h" |
616915dd | 35 | |
36 | # include "structNames.h" | |
37 | # include "nameChecks.h" | |
38 | ||
d7143e90 | 39 | # include "cscannerHelp.h" |
40 | ||
616915dd | 41 | # ifdef SANITIZER |
42 | # include "sgrammar_tokens.h" | |
43 | # else | |
44 | # include "cgrammar_tokens.h" | |
45 | # endif | |
46 | ||
47 | /* | |
48 | ** Lots of variables are needed because of interactions with the | |
49 | ** parser. This is easier than restructuring the grammar so the | |
50 | ** right values are available in the right place. | |
51 | */ | |
52 | ||
b7b694d6 | 53 | /*drl*/ |
54 | static /*@only@*/ constraintList implicitFcnConstraints = NULL; | |
616915dd | 55 | |
28bf4b0b | 56 | static void clabstract_prepareFunction (uentry p_e) /*@modifies p_e@*/ ; |
616915dd | 57 | static bool fcnNoGlobals = FALSE; |
01a8227e | 58 | static void processVariable (/*@temp@*/ idDecl p_t) /*@modifies internalState@*/ ; |
59 | ||
60 | static bool s_processingVars = FALSE; | |
61 | static bool s_processingParams = FALSE; | |
62 | static bool s_processingGlobals = FALSE; | |
63 | static bool s_processingTypedef = FALSE; | |
64 | static bool s_processingIterVars = FALSE; | |
616915dd | 65 | static /*@only@*/ qtype processingType = qtype_undefined; |
66 | static uentry currentIter = uentry_undefined; | |
616915dd | 67 | static /*@dependent@*/ uentryList saveParamList; /* for old style functions */ |
68 | static /*@owned@*/ uentry saveFunction = uentry_undefined; | |
69 | static int saveIterParamNo; | |
70 | static idDecl fixStructDecl (/*@returned@*/ idDecl p_d); | |
71 | static void checkTypeDecl (uentry p_e, ctype p_rep); | |
72 | static /*@dependent@*/ fileloc saveStoreLoc = fileloc_undefined; | |
73 | static storageClassCode storageClass = SCNONE; | |
74 | static void declareEnumList (/*@temp@*/ enumNameList p_el, ctype p_c, fileloc p_loc); | |
75 | static void resetGlobals (void); | |
28bf4b0b | 76 | static /*@null@*/ qual specialFunctionCode; |
616915dd | 77 | static bool argsUsed = FALSE; |
78 | ||
28bf4b0b | 79 | extern void clabstract_initMod () |
80 | { | |
81 | specialFunctionCode = qual_createUnknown (); | |
82 | DPRINTF (("Initialized: %s", qual_unparse (specialFunctionCode))); | |
83 | } | |
84 | ||
616915dd | 85 | static bool hasSpecialCode (void) |
86 | { | |
28bf4b0b | 87 | return (!qual_isUnknown (specialFunctionCode)); |
616915dd | 88 | } |
89 | ||
90 | extern void setArgsUsed (void) | |
91 | { | |
92 | if (argsUsed) | |
93 | { | |
94 | voptgenerror | |
95 | (FLG_SYNTAX, | |
96 | cstring_makeLiteral ("Multiple ARGSUSED comments for one function"), | |
97 | g_currentloc); | |
98 | } | |
99 | ||
100 | argsUsed = TRUE; | |
101 | } | |
102 | ||
103 | static void reflectArgsUsed (uentry ue) | |
104 | { | |
105 | if (argsUsed) | |
106 | { | |
107 | if (uentry_isFunction (ue)) | |
108 | { | |
109 | uentryList params = uentry_getParams (ue); | |
110 | ||
111 | uentryList_elements (params, el) | |
112 | { | |
113 | uentry_setUsed (el, fileloc_undefined); | |
114 | } end_uentryList_elements ; | |
115 | } | |
116 | ||
117 | argsUsed = FALSE; | |
118 | } | |
119 | } | |
120 | ||
121 | extern void setSpecialFunction (qual qu) | |
122 | { | |
28bf4b0b | 123 | if (!qual_isUnknown (specialFunctionCode)) |
616915dd | 124 | { |
125 | voptgenerror (FLG_SYNTAX, | |
126 | message ("Multiple special function codes: %s, %s " | |
127 | "(first code is ignored)", | |
128 | qual_unparse (specialFunctionCode), | |
129 | qual_unparse (qu)), | |
130 | g_currentloc); | |
131 | } | |
132 | ||
133 | specialFunctionCode = qu; | |
134 | } | |
135 | ||
136 | static void reflectSpecialCode (uentry ue) | |
137 | { | |
28bf4b0b | 138 | if (qual_isUnknown (specialFunctionCode)) { |
139 | ; | |
140 | } else if (qual_isPrintfLike (specialFunctionCode)) { | |
141 | uentry_setPrintfLike (ue); | |
142 | } else if (qual_isScanfLike (specialFunctionCode)) { | |
143 | uentry_setScanfLike (ue); | |
144 | } else if (qual_isMessageLike (specialFunctionCode)) { | |
145 | uentry_setMessageLike (ue); | |
146 | } else { | |
147 | BADBRANCH; | |
148 | } | |
616915dd | 149 | |
28bf4b0b | 150 | specialFunctionCode = qual_createUnknown (); |
616915dd | 151 | } |
152 | ||
153 | static void resetStorageClass (void) | |
154 | { | |
155 | qtype_free (processingType); | |
156 | processingType = qtype_undefined; | |
157 | storageClass = SCNONE; | |
158 | } | |
159 | ||
616915dd | 160 | static void reflectStorageClass (uentry u) |
161 | { | |
162 | if (storageClass == SCSTATIC) | |
163 | { | |
164 | uentry_setStatic (u); | |
165 | } | |
166 | else if (storageClass == SCEXTERN) | |
167 | { | |
168 | uentry_setExtern (u); | |
169 | } | |
170 | else | |
171 | { | |
172 | ; /* no storage class */ | |
173 | } | |
174 | ||
175 | } | |
176 | ||
177 | void storeLoc () | |
178 | { | |
179 | saveStoreLoc = g_currentloc; | |
180 | } | |
181 | ||
182 | void setFunctionNoGlobals (void) | |
183 | { | |
616915dd | 184 | fcnNoGlobals = TRUE; |
185 | } | |
186 | ||
616915dd | 187 | static void reflectGlobalQualifiers (sRef sr, qualList quals) |
188 | { | |
28bf4b0b | 189 | DPRINTF (("Reflect global qualifiers: %s / %s", |
190 | sRef_unparseFull (sr), qualList_unparse (quals))); | |
191 | ||
616915dd | 192 | qualList_elements (quals, qel) |
193 | { | |
194 | if (qual_isGlobalQual (qel)) /* undef, killed */ | |
195 | { | |
196 | sstate oldstate = sRef_getDefState (sr); | |
197 | sstate defstate = sstate_fromQual (qel); | |
198 | ||
199 | if ((oldstate == SS_UNDEFGLOB && defstate == SS_KILLED) | |
200 | || (oldstate == SS_KILLED && defstate == SS_UNDEFGLOB)) | |
201 | { | |
202 | defstate = SS_UNDEFKILLED; | |
203 | } | |
204 | else | |
205 | { | |
206 | ; /* any errors? */ | |
207 | } | |
208 | ||
209 | sRef_setDefState (sr, defstate, fileloc_undefined); | |
28bf4b0b | 210 | DPRINTF (("State: %s", sRef_unparseFull (sr))); |
616915dd | 211 | } |
212 | else if (qual_isAllocQual (qel)) /* out, partial, reldef, etc. */ | |
213 | { | |
214 | ctype realType = sRef_getType (sr); | |
215 | sstate defstate = sstate_fromQual (qel); | |
216 | ||
217 | if (qual_isRelDef (qel)) | |
218 | { | |
219 | ; /* okay anywhere */ | |
220 | } | |
221 | else | |
222 | { | |
223 | if (!ctype_isAP (realType) | |
224 | && !ctype_isSU (realType) | |
225 | && !ctype_isUnknown (realType) | |
226 | && !ctype_isAbstract (sRef_getType (sr))) | |
227 | { | |
228 | llerror | |
229 | (FLG_SYNTAX, | |
230 | message ("Qualifier %s used on non-pointer or struct: %q", | |
231 | qual_unparse (qel), sRef_unparse (sr))); | |
232 | ||
233 | } | |
234 | } | |
235 | ||
236 | sRef_setDefState (sr, defstate, fileloc_undefined); | |
237 | } | |
238 | else if (qual_isNull (qel)) | |
239 | { | |
240 | sRef_setNullState (sr, NS_POSNULL, fileloc_undefined); | |
241 | } | |
242 | else if (qual_isRelNull (qel)) | |
243 | { | |
244 | sRef_setNullState (sr, NS_RELNULL, fileloc_undefined); | |
245 | } | |
246 | else if (qual_isNotNull (qel)) | |
247 | { | |
248 | sRef_setNullState (sr, NS_MNOTNULL, fileloc_undefined); | |
249 | } | |
250 | else | |
251 | { | |
252 | if (qual_isCQual (qel)) | |
253 | { | |
254 | ; /* okay */ | |
255 | } | |
256 | else | |
257 | { | |
258 | llerror (FLG_SYNTAX, | |
259 | message ("Qualifier %s cannot be used in a globals list", | |
260 | qual_unparse (qel))); | |
261 | } | |
262 | } | |
263 | } end_qualList_elements; | |
264 | } | |
265 | ||
28bf4b0b | 266 | sRef clabstract_createGlobal (sRef sr, qualList quals) |
616915dd | 267 | { |
28bf4b0b | 268 | sRef res; |
269 | ||
616915dd | 270 | if (sRef_isValid (sr)) |
271 | { | |
28bf4b0b | 272 | res = sRef_copy (sr); |
273 | DPRINTF (("Reflecting quals: %s / %s", sRef_unparse (sr), qualList_unparse (quals))); | |
274 | reflectGlobalQualifiers (res, quals); | |
275 | DPRINTF (("==> %s", sRef_unparseFull (res))); | |
616915dd | 276 | } |
28bf4b0b | 277 | else |
278 | { | |
279 | res = sRef_undefined; | |
280 | } | |
281 | ||
282 | qualList_free (quals); | |
283 | return res; | |
616915dd | 284 | } |
285 | ||
286 | extern void declareCIter (cstring name, /*@owned@*/ uentryList params) | |
287 | { | |
288 | uentry ue; | |
289 | ||
290 | ue = uentry_makeIter (name, | |
291 | ctype_makeFunction (ctype_void, params), | |
292 | fileloc_copy (g_currentloc)); | |
293 | ||
294 | usymtab_supEntry (uentry_makeEndIter (name, fileloc_copy (g_currentloc))); | |
616915dd | 295 | ue = usymtab_supGlobalEntryReturn (ue); |
296 | } | |
297 | ||
298 | extern void nextIterParam (void) | |
299 | { | |
01a8227e | 300 | llassert (s_processingIterVars); |
616915dd | 301 | saveIterParamNo++; |
302 | } | |
303 | ||
304 | extern int iterParamNo (void) | |
305 | { | |
01a8227e | 306 | llassert (s_processingIterVars); |
616915dd | 307 | return saveIterParamNo; |
308 | } | |
309 | ||
310 | /* | |
311 | ** yucky hacks to put it in the right place | |
312 | */ | |
313 | ||
314 | /*@only@*/ uentry | |
315 | makeCurrentParam (idDecl t) | |
316 | { | |
317 | uentry ue; | |
318 | ||
319 | saveStoreLoc = fileloc_undefined; | |
320 | ||
321 | /* param number unknown */ | |
322 | ||
323 | ue = uentry_makeParam (t, 0); | |
324 | return ue; | |
325 | } | |
326 | ||
327 | ctype | |
328 | declareUnnamedEnum (enumNameList el) | |
329 | { | |
330 | ctype ret = usymtab_enumEnumNameListType (el); | |
331 | ctype rt; | |
332 | uentry e; | |
333 | ||
334 | if (ctype_isDefined (ret)) | |
335 | { | |
336 | rt = ret; | |
337 | e = uentry_makeEnumTagLoc (ctype_enumTag (rt), ret); | |
338 | ||
339 | reflectStorageClass (e); | |
340 | usymtab_supGlobalEntry (e); | |
341 | ||
342 | declareEnumList (el, ret, g_currentloc); | |
343 | enumNameList_free (el); | |
344 | } | |
345 | else | |
346 | { | |
347 | ctype ct = ctype_createEnum (fakeTag (), el); | |
348 | ||
349 | e = uentry_makeEnumTagLoc (ctype_enumTag (ctype_realType (ct)), ct); | |
350 | reflectStorageClass (e); | |
351 | ||
352 | e = usymtab_supGlobalEntryReturn (e); | |
353 | rt = uentry_getAbstractType (e); | |
354 | declareEnumList (el, ct, g_currentloc); | |
355 | } | |
356 | ||
357 | return (rt); | |
358 | } | |
359 | ||
360 | ctype | |
361 | declareEnum (cstring ename, enumNameList el) | |
362 | { | |
363 | ctype cet; | |
364 | uentry e; | |
365 | ||
366 | llassert (cstring_isDefined (ename)); | |
367 | ||
368 | cet = ctype_createEnum (ename, el); | |
369 | e = uentry_makeEnumTagLoc (ename, cet); | |
370 | reflectStorageClass (e); | |
371 | e = usymtab_supGlobalEntryReturn (e); | |
372 | cet = uentry_getType (e); | |
373 | declareEnumList (el, cet, uentry_whereLast (e)); | |
374 | return (uentry_getAbstractType (e)); | |
375 | } | |
376 | ||
377 | static void | |
378 | declareEnumList (enumNameList el, ctype c, fileloc loc) | |
379 | { | |
380 | bool boolnames = FALSE; | |
381 | bool othernames = FALSE; | |
382 | ||
383 | (void) context_getSaveLocation (); /* undefine it */ | |
384 | ||
385 | if (context_maybeSet (FLG_NUMENUMMEMBERS)) | |
386 | { | |
387 | int maxnum = context_getValue (FLG_NUMENUMMEMBERS); | |
388 | int num = enumNameList_size (el); | |
389 | ||
390 | if (num > maxnum) | |
391 | { | |
392 | voptgenerror | |
393 | (FLG_NUMENUMMEMBERS, | |
394 | message ("Enumerator %s declared with %d members (limit is set to %d)", | |
395 | ctype_unparse (c), num, maxnum), | |
396 | loc); | |
397 | } | |
398 | } | |
399 | ||
400 | enumNameList_elements (el, e) | |
401 | { | |
402 | uentry ue = usymtab_lookupExposeGlob (e); | |
403 | ctype ct = uentry_getType (ue); | |
404 | ||
405 | llassert (uentry_isEnumConstant (ue)); | |
406 | ||
407 | if (ctype_isUnknown (ct)) | |
408 | { | |
409 | uentry_setType (ue, c); | |
410 | } | |
411 | else | |
412 | { | |
413 | if (cstring_equal (e, context_getFalseName ()) | |
414 | || cstring_equal (e, context_getTrueName ())) | |
415 | { | |
416 | if (othernames) | |
417 | { | |
418 | if (optgenerror | |
419 | (FLG_INCONDEFS, | |
420 | message ("Enumerator mixes boolean name (%s) with " | |
421 | "non-boolean names", | |
422 | e), | |
423 | uentry_whereLast (ue))) | |
424 | { | |
425 | ; | |
426 | } | |
427 | } | |
428 | ||
429 | boolnames = TRUE; | |
430 | uentry_setType (ue, ctype_bool); | |
431 | DPRINTF (("Set type: %s / %s", | |
432 | uentry_unparse (ue), ctype_unparse (ctype_bool))); | |
433 | } | |
434 | else | |
435 | { | |
436 | if (boolnames) | |
437 | { | |
438 | if (optgenerror | |
439 | (FLG_INCONDEFS, | |
440 | message ("Enumerator mixes boolean names (%s, %s) with " | |
441 | "non-boolean name: %s", | |
442 | context_getTrueName (), | |
443 | context_getFalseName (), | |
444 | e), | |
445 | uentry_whereLast (ue))) | |
446 | { | |
447 | ; | |
448 | } | |
449 | } | |
450 | ||
451 | othernames = TRUE; | |
452 | } | |
453 | ||
454 | if (!ctype_match (c, ct)) | |
455 | { | |
456 | if (ctype_isDirectBool (ct)) | |
457 | { | |
458 | if (cstring_equal (e, context_getFalseName ()) | |
459 | || cstring_equal (e, context_getTrueName ())) | |
460 | { | |
461 | DPRINTF (("Here we are!")); | |
462 | } | |
463 | else | |
464 | { | |
465 | if (optgenerror | |
466 | (FLG_INCONDEFS, | |
467 | message ("Enumerator member %s declared with " | |
468 | "inconsistent type: %s", | |
469 | e, ctype_unparse (c)), | |
470 | uentry_whereLast (ue))) | |
471 | { | |
472 | uentry_showWhereSpecifiedExtra | |
473 | (ue, cstring_copy (ctype_unparse (ct))); | |
474 | } | |
475 | } | |
476 | } | |
477 | else | |
478 | { | |
479 | if (optgenerror | |
480 | (FLG_INCONDEFS, | |
481 | message ("Enumerator member %s declared with " | |
482 | "inconsistent type: %s", | |
483 | e, ctype_unparse (c)), | |
484 | uentry_whereLast (ue))) | |
485 | { | |
486 | uentry_showWhereSpecifiedExtra | |
487 | (ue, cstring_copy (ctype_unparse (ct))); | |
488 | } | |
489 | } | |
490 | } | |
491 | } | |
492 | } end_enumNameList_elements; | |
493 | } | |
494 | ||
495 | static /*@dependent@*/ uentryList currentParamList; | |
496 | ||
77d37419 | 497 | /*drl added 3-28-2002*/ |
470b7798 | 498 | /* this function takes a list of paramentar and generates a list |
499 | of constraints. | |
312c9815 | 500 | */ |
501 | ||
502 | /* drl modified 10/23/2002 | |
503 | ||
504 | The current semantics are generated constraints of the form MaxSet(p) >= 0 and MaxRead(p) >= 0 for all pointers | |
505 | unless the @out@ annotation has been applied to a parameter, then we only want to generate maxSet(p) > = 0 | |
470b7798 | 506 | */ |
2934b455 | 507 | |
c3e695ff | 508 | void setImplictfcnConstraints (void) |
470b7798 | 509 | { |
510 | uentryList params; | |
511 | sRef s; | |
512 | constraint c; | |
513 | params = currentParamList; | |
514 | ||
28bf4b0b | 515 | if (constraintList_isDefined(implicitFcnConstraints) ) |
bb25bea6 | 516 | constraintList_free(implicitFcnConstraints); |
4287634e | 517 | |
c3e695ff | 518 | implicitFcnConstraints = constraintList_makeNew(); |
470b7798 | 519 | |
520 | uentryList_elements (params, el) | |
521 | { | |
522 | DPRINTF((message("setImplictfcnConstraints doing: %s", uentry_unparse(el) ) )); | |
523 | ||
4287634e | 524 | if ( uentry_isVariable (el) ) |
470b7798 | 525 | { |
4287634e | 526 | s = uentry_getSref(el); |
527 | if (sRef_isReference (s) ) | |
528 | { | |
529 | ||
530 | DPRINTF((message ("%s is a pointer", sRef_unparse(s) ) )); | |
531 | /*drl 4/26/01 | |
532 | chagned this from MaxSet(s) == 0 to MaxSet(s) >= 0 */ | |
533 | c = constraint_makeSRefWriteSafeInt (s, 0); | |
534 | ||
535 | implicitFcnConstraints = constraintList_add(implicitFcnConstraints , c); | |
536 | ||
537 | /*drl 10/23/2002 added support for out*/ | |
538 | ||
539 | if (!uentry_isOut(el) ) | |
540 | { | |
541 | c = constraint_makeSRefReadSafeInt (s, 0); | |
542 | ||
543 | implicitFcnConstraints = constraintList_add(implicitFcnConstraints , c); | |
544 | } | |
545 | } | |
546 | else | |
547 | { | |
548 | DPRINTF((message ("%s is NOT a pointer", sRef_unparse(s) ) )); | |
549 | } | |
550 | } /*end uentry_isVariable*/ | |
551 | ||
552 | else if (uentry_isElipsisMarker (el) ) | |
470b7798 | 553 | { |
4287634e | 554 | /*just ignore these*/ |
555 | ; | |
470b7798 | 556 | } |
312c9815 | 557 | |
4287634e | 558 | else |
312c9815 | 559 | { |
4287634e | 560 | /*just ignore this |
561 | I'm not sure if this is possible though | |
562 | */ | |
563 | /*@warning take this out befor@*/ | |
564 | llassert(FALSE); | |
312c9815 | 565 | } |
470b7798 | 566 | } |
4287634e | 567 | |
470b7798 | 568 | end_uentryList_elements; |
312c9815 | 569 | DPRINTF((message("implicitFcnConstraints has been set to %s\n", |
570 | constraintList_print(implicitFcnConstraints) ) )); | |
4287634e | 571 | |
470b7798 | 572 | } |
573 | ||
2934b455 | 574 | |
575 | /*@observer@*/ constraintList getImplicitFcnConstraints (void) | |
576 | { | |
577 | return implicitFcnConstraints; | |
578 | } | |
579 | ||
616915dd | 580 | void setCurrentParams (/*@dependent@*/ uentryList ue) |
581 | { | |
582 | currentParamList = ue; | |
583 | } | |
584 | ||
585 | void clearCurrentParams (void) | |
586 | { | |
587 | currentParamList = uentryList_undefined; | |
588 | } | |
589 | ||
590 | /* | |
591 | ** requires: uentry_isFunction (e) | |
592 | ** parameter names for current function are in currentParamList | |
593 | */ | |
594 | ||
595 | static void enterFunctionParams (uentryList params) | |
596 | { | |
597 | int paramno = 0; | |
598 | ||
599 | uentryList_elements (params, current) | |
600 | { | |
601 | if (uentry_hasName (current)) | |
602 | { | |
603 | uentry_setParamNo (current, paramno); | |
604 | usymtab_supEntry (uentry_copy (current)); | |
605 | } | |
606 | ||
607 | paramno++; | |
608 | } end_uentryList_elements; | |
609 | } | |
610 | ||
611 | ||
612 | extern void enterParamsTemp (void) | |
613 | { | |
614 | usymtab_enterScope (); | |
615 | enterFunctionParams (currentParamList); | |
616 | } | |
617 | ||
618 | extern void exitParamsTemp (void) | |
619 | { | |
620 | usymtab_quietPlainExitScope (); | |
621 | } | |
622 | ||
28bf4b0b | 623 | static /*@exposed@*/ uentry clabstract_globalDeclareFunction (idDecl tid) |
616915dd | 624 | { |
625 | ctype deftype = idDecl_getCtype (tid); | |
626 | ctype rettype; | |
627 | uentry ue; | |
628 | ||
629 | DPRINTF (("Global function: %s", idDecl_unparse (tid))); | |
28bf4b0b | 630 | |
616915dd | 631 | if (ctype_isFunction (deftype)) |
632 | { | |
28bf4b0b | 633 | rettype = ctype_getReturnType (deftype); |
616915dd | 634 | } |
635 | else | |
636 | { | |
637 | rettype = ctype_unknown; | |
638 | } | |
639 | ||
640 | /* | |
641 | ** check has been moved here... | |
642 | */ | |
643 | ||
644 | if (ctype_isFunction (idDecl_getCtype (tid))) | |
645 | { | |
646 | ue = uentry_makeIdFunction (tid); | |
647 | reflectSpecialCode (ue); | |
648 | reflectArgsUsed (ue); | |
01a8227e | 649 | reflectStorageClass (ue); |
650 | uentry_checkParams (ue); | |
651 | ||
652 | DPRINTF (("Supercede function: %s", uentry_unparseFull (ue))); | |
653 | ||
654 | ue = usymtab_supGlobalEntryReturn (ue); | |
655 | DPRINTF (("After supercede function: %s", uentry_unparseFull (ue))); | |
656 | ||
657 | DPRINTF (("Enter function: %s", uentry_unparseFull (ue))); | |
658 | context_enterFunction (ue); | |
659 | enterFunctionParams (uentry_getParams (ue)); | |
660 | ||
661 | resetStorageClass (); | |
662 | DPRINTF (("Function: %s", uentry_unparseFull (ue))); | |
663 | return (ue); | |
616915dd | 664 | } |
665 | else | |
666 | { | |
01a8227e | 667 | llparseerror (message ("Non-function declaration: %q", |
616915dd | 668 | idDecl_unparse (tid))); |
01a8227e | 669 | return (uentry_undefined); |
616915dd | 670 | } |
616915dd | 671 | } |
672 | ||
673 | /* | |
674 | ** for now, no type checking | |
675 | ** (must check later though!) | |
676 | */ | |
677 | ||
678 | static /*@only@*/ uentry globalDeclareOldStyleFunction (idDecl tid) | |
679 | { | |
680 | uentry ue; | |
681 | ||
682 | /* | |
683 | ** check has been moved here... | |
684 | */ | |
685 | ||
686 | if (cstring_equalLit (idDecl_observeId (tid), "main")) | |
687 | { | |
688 | context_setFlagTemp (FLG_MAINTYPE, FALSE); | |
689 | } | |
690 | ||
691 | ue = uentry_makeIdFunction (tid); | |
692 | reflectStorageClass (ue); | |
693 | reflectSpecialCode (ue); | |
694 | reflectArgsUsed (ue); | |
695 | uentry_setDefined (ue, g_currentloc); | |
28bf4b0b | 696 | uentry_checkParams (ue); |
616915dd | 697 | resetStorageClass (); |
7ebcc5bb | 698 | |
699 | /* context_enterOldStyleScope (); */ | |
700 | ||
616915dd | 701 | return (ue); |
702 | } | |
703 | ||
704 | static void oldStyleDeclareFunction (/*@only@*/ uentry e) | |
705 | { | |
706 | uentryList params = saveParamList; | |
707 | ctype rt = uentry_getType (e); | |
708 | ||
709 | llassert (ctype_isFunction (rt)); | |
710 | ||
ccf0a4a8 | 711 | if (uentry_hasStateClauseList (e) |
712 | || uentry_hasConditions (e)) | |
713 | { | |
714 | llfatalerror (message ("%q: Old-style function declaration uses a clause (rewrite with function parameters): %q", | |
715 | fileloc_unparse (g_currentloc), uentry_unparse (e))); | |
716 | } | |
717 | ||
616915dd | 718 | e = usymtab_supGlobalEntryReturn (e); |
719 | ||
720 | context_enterFunction (e); | |
721 | enterFunctionParams (params); | |
722 | saveParamList = uentryList_undefined; | |
723 | resetStorageClass (); | |
724 | } | |
725 | ||
7ebcc5bb | 726 | static void oldStyleCompleteFunction (/*@only@*/ uentry e) |
727 | { | |
728 | uentryList params = saveParamList; | |
729 | ctype rt = uentry_getType (e); | |
730 | ||
731 | llassert (ctype_isFunction (rt)); | |
732 | ||
733 | if (uentry_hasStateClauseList (e) | |
734 | || uentry_hasConditions (e)) | |
735 | { | |
736 | llfatalerror (message ("%q: Old-style function declaration uses a clause (rewrite with function parameters): %q", | |
737 | fileloc_unparse (g_currentloc), uentry_unparse (e))); | |
738 | } | |
739 | ||
740 | e = usymtab_supGlobalEntryReturn (e); | |
741 | ||
742 | context_completeOldStyleFunction (e); | |
743 | enterFunctionParams (params); | |
744 | saveParamList = uentryList_undefined; | |
745 | resetStorageClass (); | |
746 | } | |
747 | ||
28bf4b0b | 748 | void clabstract_declareFunction (idDecl tid) /*@globals undef saveFunction; @*/ |
616915dd | 749 | { |
750 | uentry ue; | |
751 | ||
752 | DPRINTF (("Declare function: %s", idDecl_unparse (tid))); | |
753 | ||
01a8227e | 754 | if (ctype_isUnknown (idDecl_getCtype (tid))) |
616915dd | 755 | { |
01a8227e | 756 | /* |
757 | ** No type, its really a plain name (int) declaration | |
758 | */ | |
759 | ||
760 | voptgenerror (FLG_IMPTYPE, | |
761 | message ("No type before declaration name (implicit int type): %q", | |
762 | idDecl_unparse (tid)), | |
763 | g_currentloc); | |
764 | tid = idDecl_replaceCtype (tid, ctype_int); | |
765 | processVariable (tid); | |
766 | saveFunction = uentry_undefined; | |
616915dd | 767 | } |
768 | else | |
769 | { | |
01a8227e | 770 | if (s_processingParams) |
616915dd | 771 | { |
01a8227e | 772 | ue = globalDeclareOldStyleFunction (tid); |
773 | saveFunction = ue; | |
774 | DPRINTF (("Set save function: %s", uentry_unparseFull (ue))); | |
616915dd | 775 | } |
776 | else | |
777 | { | |
01a8227e | 778 | saveFunction = uentry_undefined; |
779 | ||
780 | if (context_inRealFunction ()) | |
616915dd | 781 | { |
01a8227e | 782 | ue = uentry_makeVariableLoc (idDecl_observeId (tid), ctype_unknown); |
783 | ||
784 | llparseerror (message ("Function declared inside function: %q", | |
616915dd | 785 | idDecl_unparse (tid))); |
786 | ||
01a8227e | 787 | context_quietExitFunction (); |
788 | ue = usymtab_supEntryReturn (ue); | |
616915dd | 789 | } |
790 | else | |
791 | { | |
01a8227e | 792 | if (context_inInnerScope ()) |
793 | { | |
794 | llparseerror (message ("Declaration in inner context: %q", | |
795 | idDecl_unparse (tid))); | |
796 | ||
797 | sRef_setGlobalScope (); | |
798 | ue = uentry_makeVariableLoc (idDecl_observeId (tid), | |
799 | ctype_unknown); | |
800 | ue = usymtab_supGlobalEntryReturn (ue); | |
801 | sRef_clearGlobalScope (); | |
802 | } | |
803 | else | |
804 | { | |
805 | ue = clabstract_globalDeclareFunction (tid); | |
806 | } | |
616915dd | 807 | } |
01a8227e | 808 | |
809 | resetGlobals (); | |
616915dd | 810 | } |
b87215ab | 811 | |
01a8227e | 812 | resetStorageClass (); |
616915dd | 813 | } |
b87215ab | 814 | |
815 | idDecl_free (tid); | |
616915dd | 816 | } |
817 | ||
818 | void declareStaticFunction (idDecl tid) /*@globals undef saveFunction; @*/ | |
819 | { | |
820 | uentry ue; | |
821 | ||
822 | DPRINTF (("Declare static funciton: %s", idDecl_unparse (tid))); | |
823 | ||
01a8227e | 824 | if (s_processingParams) |
616915dd | 825 | { |
826 | ue = globalDeclareOldStyleFunction (tid); | |
827 | saveFunction = ue; | |
828 | } | |
829 | else | |
830 | { | |
831 | saveFunction = uentry_undefined; | |
832 | ||
833 | if (context_inRealFunction ()) | |
834 | { | |
835 | ue = uentry_makeVariableLoc (idDecl_observeId (tid), ctype_unknown); | |
836 | ||
837 | llparseerror (message ("Function declared inside function: %q", | |
838 | idDecl_unparse (tid))); | |
839 | ||
840 | context_quietExitFunction (); | |
841 | ue = usymtab_supEntryReturn (ue); | |
842 | } | |
843 | else | |
844 | { | |
845 | if (context_inInnerScope ()) | |
846 | { | |
847 | llparseerror (message ("Declaration in inner context: %q", | |
848 | idDecl_unparse (tid))); | |
849 | ||
850 | sRef_setGlobalScope (); | |
851 | ue = uentry_makeVariableLoc (idDecl_observeId (tid), | |
852 | ctype_unknown); | |
853 | ue = usymtab_supGlobalEntryReturn (ue); | |
854 | sRef_clearGlobalScope (); | |
855 | } | |
856 | else | |
857 | { | |
858 | ctype deftype = idDecl_getCtype (tid); | |
859 | ctype rettype; | |
860 | ||
861 | if (ctype_isFunction (deftype)) | |
862 | { | |
28bf4b0b | 863 | rettype = ctype_getReturnType (deftype); |
616915dd | 864 | } |
865 | else | |
866 | { | |
867 | rettype = ctype_unknown; | |
868 | } | |
869 | ||
870 | /* | |
871 | ** check has been moved here... | |
872 | */ | |
873 | ||
874 | if (ctype_isFunction (idDecl_getCtype (tid))) | |
875 | { | |
876 | ue = uentry_makeIdFunction (tid); | |
877 | reflectSpecialCode (ue); | |
878 | reflectArgsUsed (ue); | |
879 | } | |
880 | else | |
881 | { | |
01a8227e | 882 | DPRINTF (("Here we are!")); |
616915dd | 883 | llparseerror (message ("Inconsistent function declaration: %q", |
884 | idDecl_unparse (tid))); | |
885 | ||
886 | tid = idDecl_replaceCtype | |
887 | (tid, ctype_makeFunction (ctype_unknown, uentryList_undefined)); | |
888 | ue = uentry_makeIdFunction (tid); | |
889 | } | |
890 | ||
891 | reflectStorageClass (ue); | |
892 | uentry_setStatic (ue); | |
893 | ||
894 | uentry_checkParams (ue); | |
616915dd | 895 | |
896 | DPRINTF (("Sub global entry: %s", uentry_unparse (ue))); | |
897 | ue = usymtab_supGlobalEntryReturn (ue); | |
898 | ||
899 | context_enterFunction (ue); | |
900 | enterFunctionParams (uentry_getParams (ue)); | |
901 | resetStorageClass (); | |
902 | } | |
903 | } | |
904 | ||
905 | resetGlobals (); | |
906 | } | |
907 | ||
908 | resetStorageClass (); | |
909 | idDecl_free (tid); | |
910 | } | |
911 | ||
912 | void | |
913 | checkTypeDecl (uentry e, ctype rep) | |
914 | { | |
915 | cstring n = uentry_getName (e); | |
916 | ||
28bf4b0b | 917 | DPRINTF (("Check type decl: %s", uentry_unparseFull (e))); |
616915dd | 918 | |
919 | if (cstring_equal (context_getBoolName (), n)) | |
920 | { | |
921 | ctype rrep = ctype_realType (rep); | |
922 | ||
923 | /* | |
924 | ** for abstract enum types, we need to fix the enum members: | |
925 | ** they should have the abstract type, not the rep type. | |
926 | */ | |
927 | ||
928 | if (ctype_isEnum (ctype_realType (rrep))) | |
929 | { | |
930 | enumNameList el = ctype_elist (rrep); | |
931 | ||
932 | enumNameList_elements (el, ye) | |
933 | { | |
934 | if (usymtab_existsGlob (ye)) | |
935 | { | |
936 | uentry ue = usymtab_lookupSafe (ye); | |
937 | uentry_setType (ue, ctype_bool); | |
938 | } | |
939 | ||
940 | if (cstring_equal (context_getTrueName (), ye) | |
941 | || cstring_equal (context_getFalseName (), ye)) | |
942 | { | |
943 | ; | |
944 | } | |
945 | else | |
946 | { | |
947 | vgenhinterror | |
948 | (FLG_SYNTAX, | |
949 | message ("Member of boolean enumerated type definition " | |
0bd4c301 | 950 | "does not match name set to represent true " |
951 | "or false: %s", | |
616915dd | 952 | ye), |
953 | message ("Use -boolfalse and -booltrue to set the " | |
954 | "name of false and true boolean values."), | |
955 | uentry_whereDefined (e)); | |
956 | } | |
957 | } end_enumNameList_elements; | |
958 | } | |
959 | } | |
960 | ||
961 | if (usymtab_exists (n)) | |
962 | { | |
963 | usymId llm = usymtab_getId (n); | |
b73d1009 | 964 | uentry le = usymtab_getTypeEntry (typeId_fromUsymId (llm)); |
616915dd | 965 | |
966 | uentry_setDeclared (e, g_currentloc); | |
6970c11b | 967 | uentry_setSref (e, sRef_makeGlobal (llm, uentry_getType (le), stateInfo_currentLoc ())); |
616915dd | 968 | |
969 | DPRINTF (("Here we are: %s / %s", | |
970 | n, context_getBoolName ())); | |
971 | ||
972 | if (uentry_isAbstractDatatype (le)) | |
973 | { | |
974 | ctype rrep = ctype_realType (rep); | |
975 | ||
28bf4b0b | 976 | DPRINTF (("Abstract type: %s", uentry_unparseFull (le))); |
977 | ||
616915dd | 978 | /* |
979 | ** for abstract enum types, we need to fix the enum members: | |
980 | ** they should have the abstract type, not the rep type. | |
981 | */ | |
982 | ||
983 | if (ctype_isEnum (ctype_realType (rrep))) | |
984 | { | |
985 | ctype at = uentry_getAbstractType (le); | |
986 | enumNameList el = ctype_elist (rrep); | |
987 | ||
988 | enumNameList_elements (el, ye) | |
989 | { | |
990 | if (usymtab_existsGlob (ye)) | |
991 | { | |
992 | uentry ue = usymtab_lookupSafe (ye); | |
993 | ||
994 | llassert (uentry_isEitherConstant (ue)); | |
2cecdaff | 995 | |
996 | /* evans 2002-04-22 */ | |
997 | if (ctype_isBool (uentry_getType (ue))) | |
998 | { | |
999 | /* | |
1000 | ** If set using -booltrue or -boolfalse, don't change the type. | |
1001 | */ | |
1002 | } | |
1003 | else | |
1004 | { | |
1005 | llassertprint (ctype_match (uentry_getType (ue), rrep), | |
1006 | ("Bad enum: %s / %s", | |
1007 | uentry_unparse (ue), | |
1008 | ctype_unparse (rrep))); | |
1009 | ||
1010 | uentry_setType (ue, at); | |
1011 | } | |
616915dd | 1012 | } |
1013 | } end_enumNameList_elements; | |
1014 | } | |
1015 | ||
1016 | if (uentry_isMutableDatatype (le)) | |
1017 | { | |
1018 | /* maybe more complicated if abstract and immutable ? */ | |
1019 | ||
1020 | if (!ctype_isRealPointer (rep) && !ctype_isRealAbstract (rep)) | |
1021 | { | |
1022 | voptgenerror | |
1023 | (FLG_MUTREP, | |
1024 | message ("Mutable abstract type %s declared without pointer " | |
1025 | "indirection: %s (violates assignment semantics)", | |
1026 | n, ctype_unparse (rep)), | |
1027 | uentry_whereDefined (e)); | |
1028 | ||
1029 | uentry_setMutable (e); | |
1030 | } | |
1031 | } | |
1032 | } | |
1033 | } | |
1034 | else | |
1035 | { | |
1036 | fileloc fl = uentry_whereDeclared (e); | |
1037 | ||
1038 | if (context_getFlag (FLG_LIKELYBOOL) | |
1039 | && !context_getFlag (FLG_BOOLINT)) | |
1040 | { | |
1041 | if ((cstring_equalLit (n, "BOOL") | |
1042 | || cstring_equalLit (n, "Bool") | |
1043 | || cstring_equalLit (n, "bool") | |
1044 | || cstring_equalLit (n, "boolean") | |
1045 | || cstring_equalLit (n, "Boolean") | |
1046 | || cstring_equalLit (n, "BOOLEAN")) | |
1047 | && !(cstring_equal (n, context_getBoolName ()))) | |
1048 | { | |
1049 | if (context_setBoolName ()) { | |
1050 | voptgenerror | |
1051 | (FLG_LIKELYBOOL, | |
1052 | message ("Type %s is probably meant as a boolean type, but does " | |
1053 | "not match the boolean type name \"%s\".", | |
1054 | n, | |
1055 | context_getBoolName ()), | |
1056 | fl); | |
1057 | } else | |
1058 | voptgenerror | |
1059 | (FLG_LIKELYBOOL, | |
1060 | message ("Type %s is probably meant as a boolean type, " | |
1061 | "but the boolean type name is not set. " | |
1062 | "Use -booltype %s to set it.", | |
1063 | n, | |
1064 | n), | |
1065 | fl); | |
1066 | } | |
1067 | } | |
1068 | ||
1069 | if (!uentry_isStatic (e) | |
1070 | && !ctype_isFunction (uentry_getType (e)) | |
1071 | && !fileloc_isLib (fl) | |
1072 | && !fileloc_isImport (fl) | |
1073 | && fileloc_isHeader (fl)) | |
1074 | { | |
1075 | voptgenerror (FLG_EXPORTTYPE, | |
1076 | message ("Type exported, but not specified: %s\n", n), | |
1077 | fl); | |
1078 | } | |
1079 | } | |
1080 | ||
1081 | cstring_free (n); | |
1082 | } | |
1083 | ||
1084 | uentryList | |
1085 | fixUentryList (idDeclList tl, qtype q) | |
1086 | { | |
1087 | uentryList f = uentryList_new (); | |
1088 | ||
1089 | idDeclList_elements (tl, i) | |
1090 | { | |
1091 | if (idDecl_isDefined (i)) | |
1092 | { | |
1093 | uentry ue; | |
1094 | uentry old; | |
1095 | ctype rt; | |
1096 | ||
1097 | (void) idDecl_fixBase (i, q); | |
1098 | ||
1099 | /* | |
1100 | ** implicit annotations | |
1101 | */ | |
1102 | ||
1103 | (void) fixStructDecl (i); | |
1104 | ||
1105 | ue = uentry_makeIdVariable (i); | |
1106 | rt = ctype_realType (uentry_getType (ue)); | |
1107 | ||
1108 | /* | |
1109 | ** where is this here??? | |
1110 | ||
1111 | if (ctype_isArray (rt) || ctype_isSU (rt)) | |
1112 | { | |
1113 | sRef_setAllocated (uentry_getSref (ue), uentry_whereDefined (ue)); | |
1114 | } | |
1115 | ||
1116 | ** | |
1117 | */ | |
1118 | ||
1119 | if (uentry_isValid (old = uentryList_lookupField (f, uentry_rawName (ue)))) | |
1120 | { | |
1121 | if (optgenerror (FLG_SYNTAX, | |
1122 | message ("Field name reused: %s", uentry_rawName (ue)), | |
1123 | uentry_whereDefined (ue))) | |
1124 | { | |
1125 | llgenmsg (message ("Previous use of %s", uentry_rawName (ue)), | |
1126 | uentry_whereDefined (old)); | |
1127 | } | |
1128 | } | |
1129 | ||
1130 | f = uentryList_add (f, ue); | |
1131 | } | |
1132 | } end_idDeclList_elements; | |
1133 | ||
1134 | idDeclList_free (tl); | |
1135 | return (f); | |
1136 | } | |
1137 | ||
1138 | /* | |
1139 | ** This is a hack to support unnamed struct/union fields as done by | |
1140 | ** Microsoft VC++. It is not supported by the ANSI standard. | |
1141 | ** | |
1142 | ** The inner fields are added to the outer structure. This is meaningful | |
1b8ae690 | 1143 | ** for nesting structs inside unions, but Splint does no related |
616915dd | 1144 | ** checking. |
1145 | */ | |
1146 | ||
1147 | uentryList | |
1148 | fixUnnamedDecl (qtype q) | |
1149 | { | |
1150 | ctype ct = ctype_realType (qtype_getType (q)); | |
1151 | ||
1152 | if (ctype_isStruct (ct) || ctype_isUnion (ct)) | |
1153 | { | |
288cbc5c | 1154 | return uentryList_single (uentry_makeUnnamedVariable (ct)); |
616915dd | 1155 | } |
f32c0a7e | 1156 | else if (ctype_isEnum (ct)) |
1157 | { | |
1158 | /* evans 2002-02-05: nothing to do for unnamed enum lists */ | |
1159 | return uentryList_undefined; | |
1160 | } | |
616915dd | 1161 | else |
b642ab7c | 1162 | { |
1163 | voptgenerror | |
1164 | (FLG_SYNTAX, | |
1165 | message ("Type name in field declarations: %s", qtype_unparse (q)), | |
1166 | g_currentloc); | |
616915dd | 1167 | } |
1168 | ||
1169 | return uentryList_undefined; | |
1170 | } | |
1171 | ||
1172 | void setStorageClass (storageClassCode sc) | |
1173 | { | |
1174 | storageClass = sc; | |
1175 | } | |
1176 | ||
1177 | void | |
1178 | setProcessingIterVars (uentry iter) | |
1179 | { | |
01a8227e | 1180 | s_processingIterVars = TRUE; |
616915dd | 1181 | currentIter = iter; |
1182 | saveIterParamNo = 0; | |
1183 | } | |
1184 | ||
1185 | void | |
1186 | setProcessingGlobalsList () | |
1187 | { | |
01a8227e | 1188 | s_processingGlobals = TRUE; |
616915dd | 1189 | fcnNoGlobals = FALSE; |
1190 | } | |
1191 | ||
1192 | static bool ProcessingGlobMods = FALSE; | |
1193 | ||
1194 | void | |
1195 | setProcessingGlobMods () | |
1196 | { | |
1197 | ProcessingGlobMods = TRUE; | |
1198 | } | |
1199 | ||
1200 | void | |
1201 | clearProcessingGlobMods () | |
1202 | { | |
1203 | ProcessingGlobMods = FALSE; | |
1204 | } | |
1205 | ||
1206 | bool | |
1207 | isProcessingGlobMods () | |
1208 | { | |
1209 | return (ProcessingGlobMods); | |
1210 | } | |
1211 | ||
1212 | static void resetGlobals (void) | |
1213 | { | |
01a8227e | 1214 | s_processingGlobals = FALSE; |
616915dd | 1215 | fcnNoGlobals = FALSE; |
1216 | } | |
1217 | ||
1218 | void | |
1219 | unsetProcessingGlobals () | |
1220 | { | |
01a8227e | 1221 | s_processingGlobals = FALSE; |
616915dd | 1222 | } |
1223 | ||
1224 | void | |
1225 | setProcessingVars (/*@only@*/ qtype q) | |
1226 | { | |
01a8227e | 1227 | s_processingVars = TRUE; |
616915dd | 1228 | qtype_free (processingType); |
1229 | processingType = q; | |
1230 | } | |
1231 | ||
1232 | static void | |
1233 | setGenericParamList (/*@dependent@*/ uentryList pm) | |
1234 | { | |
01a8227e | 1235 | s_processingParams = TRUE; |
616915dd | 1236 | saveParamList = pm; |
1237 | } | |
1238 | ||
1239 | void | |
e83c79ec | 1240 | setProcessingTypedef (qtype q) |
616915dd | 1241 | { |
01a8227e | 1242 | s_processingTypedef = TRUE; |
616915dd | 1243 | |
1244 | qtype_free (processingType); | |
1245 | processingType = q; | |
1246 | } | |
1247 | ||
1248 | void | |
1249 | unsetProcessingVars () | |
1250 | { | |
1251 | resetStorageClass (); | |
01a8227e | 1252 | s_processingVars = FALSE; |
616915dd | 1253 | } |
1254 | ||
1255 | void | |
7ebcc5bb | 1256 | oldStyleDoneParams () |
616915dd | 1257 | { |
01a8227e | 1258 | if (s_processingParams) |
616915dd | 1259 | { |
1260 | if (uentry_isInvalid (saveFunction)) | |
1261 | { | |
1262 | llbuglit ("unsetProcessingVars: no saved function\n"); | |
616915dd | 1263 | } |
1264 | else | |
1265 | { | |
28bf4b0b | 1266 | ctype ct = ctype_getReturnType (uentry_getType (saveFunction)); |
616915dd | 1267 | uentryList params = uentryList_copy (saveParamList); |
1268 | ctype ct2 = ctype_makeFunction (ct, params); | |
1269 | ||
1270 | uentry_setType (saveFunction, ct2); | |
01a8227e | 1271 | s_processingParams = FALSE; |
616915dd | 1272 | |
7ebcc5bb | 1273 | oldStyleCompleteFunction (saveFunction); |
616915dd | 1274 | saveFunction = uentry_undefined; |
1275 | resetGlobals (); | |
1276 | } | |
1277 | } | |
1278 | else | |
1279 | { | |
1280 | /* | |
1281 | ** If the paramlist used a type name, we could be here. | |
1282 | */ | |
1283 | ||
1284 | llfatalerror (message ("%q: Old-style function parameter list uses a " | |
1285 | "type name.", fileloc_unparse (g_currentloc))); | |
1286 | } | |
1287 | } | |
1288 | ||
1289 | void | |
1290 | checkDoneParams () | |
1291 | { | |
1292 | if (uentry_isValid (saveFunction)) | |
1293 | { | |
1294 | /* | |
1295 | ** old style declaration | |
1296 | */ | |
1297 | ||
28bf4b0b | 1298 | ctype ct = ctype_getReturnType (uentry_getType (saveFunction)); |
616915dd | 1299 | ctype ct2; |
1300 | ||
7ebcc5bb | 1301 | DPRINTF (("save function: %s", uentry_unparseFull (saveFunction))); |
1302 | ||
616915dd | 1303 | uentryList_elements (saveParamList, current) |
1304 | { | |
1305 | uentry_setType (current, ctype_int); /* all params are ints */ | |
1306 | } end_uentryList_elements; | |
1307 | ||
1308 | ct2 = ctype_makeParamsFunction (ct, uentryList_copy (saveParamList)); | |
1309 | ||
1310 | uentry_setType (saveFunction, ct2); | |
01a8227e | 1311 | s_processingParams = FALSE; |
616915dd | 1312 | |
1313 | oldStyleDeclareFunction (saveFunction); | |
1314 | saveFunction = uentry_undefined; | |
1315 | } | |
1316 | } | |
1317 | ||
e83c79ec | 1318 | void clabstract_declareType (/*@only@*/ exprNodeList decls, /*@only@*/ warnClause warn) |
1319 | { | |
01a8227e | 1320 | llassert (s_processingTypedef); |
e83c79ec | 1321 | |
80489f0a | 1322 | DPRINTF (("Declare type: %s", exprNodeList_unparse (decls))); |
1323 | ||
e83c79ec | 1324 | if (warnClause_isDefined (warn)) |
1325 | { | |
80489f0a | 1326 | DPRINTF (("Has a warn clause!")); |
1327 | DPRINTF (("Warn: %s", warnClause_unparse (warn))); | |
1328 | ||
e83c79ec | 1329 | exprNodeList_elements (decls, el) |
1330 | { | |
1331 | uentry ue = exprNode_getUentry (el); | |
1332 | cstring uname = uentry_getName (ue); | |
1333 | ||
1334 | DPRINTF (("Entry: %s", exprNode_unparse (el))); | |
1335 | ||
1336 | /* | |
1337 | ** Need to lookup again to make sure we have the right one... | |
1338 | */ | |
1339 | ||
15b3d2b2 | 1340 | ue = usymtab_lookupExposeGlob (uname); |
e83c79ec | 1341 | |
1342 | llassert (uentry_isValid (ue)); | |
1343 | llassert (uentry_isDatatype (ue)); | |
1344 | ||
1345 | DPRINTF (("Warning for %s: %s", | |
1346 | uentry_unparse (ue), warnClause_unparse (warn))); | |
1347 | ||
1348 | uentry_addWarning (ue, warnClause_copy (warn)); | |
80489f0a | 1349 | DPRINTF (("After add warning: %s", uentry_unparseFull (ue))); |
15b3d2b2 | 1350 | cstring_free (uname); |
e83c79ec | 1351 | } end_exprNodeList_elements; |
1352 | } | |
1353 | ||
1354 | warnClause_free (warn); | |
1355 | exprNodeList_free (decls); | |
1356 | unsetProcessingTypedef (); | |
1357 | } | |
1358 | ||
616915dd | 1359 | void |
1360 | unsetProcessingTypedef () | |
1361 | { | |
01a8227e | 1362 | s_processingTypedef = FALSE; |
616915dd | 1363 | } |
1364 | ||
1365 | void checkConstant (qtype t, idDecl id) | |
1366 | { | |
1367 | uentry e; | |
7534721d | 1368 | |
616915dd | 1369 | id = idDecl_fixBase (id, t); |
1370 | e = uentry_makeIdConstant (id); | |
7534721d | 1371 | |
616915dd | 1372 | reflectStorageClass (e); |
1373 | resetStorageClass (); | |
1374 | ||
d89a0c94 | 1375 | DPRINTF (("Constant: %s", uentry_unparseFull (e))); |
616915dd | 1376 | usymtab_supGlobalEntry (e); |
1377 | } | |
1378 | ||
1379 | void checkValueConstant (qtype t, idDecl id, exprNode e) | |
1380 | { | |
1381 | uentry ue; | |
1382 | ||
1383 | id = idDecl_fixBase (id, t); | |
1384 | ue = uentry_makeIdConstant (id); | |
1385 | reflectStorageClass (ue); | |
1386 | resetStorageClass (); | |
1387 | ||
1388 | if (exprNode_isDefined (e)) | |
1389 | { | |
1390 | if (!exprNode_matchType (uentry_getType (ue), e)) | |
1391 | { | |
1392 | (void) gentypeerror | |
1393 | (exprNode_getType (e), e, | |
1394 | uentry_getType (ue), exprNode_undefined, | |
1395 | message ("Constant %q initialized to type %t, expects %t: %s", | |
1396 | uentry_getName (ue), | |
1397 | exprNode_getType (e), | |
1398 | uentry_getType (ue), | |
1399 | exprNode_unparse (e)), | |
1400 | exprNode_loc (e)); | |
1401 | } | |
1402 | else | |
1403 | { | |
1404 | if (exprNode_hasValue (e)) | |
1405 | { | |
1406 | uentry_mergeConstantValue (ue, multiVal_copy (exprNode_getValue (e))); | |
1407 | } | |
b9904f57 | 1408 | else |
1409 | { | |
1410 | DPRINTF (("No value: %s", exprNode_unparse (e))); | |
1411 | } | |
616915dd | 1412 | } |
1413 | } | |
1414 | ||
b9904f57 | 1415 | DPRINTF (("Constant value: %s", uentry_unparseFull (ue))); |
616915dd | 1416 | usymtab_supGlobalEntry (ue); |
1417 | } | |
1418 | ||
01a8227e | 1419 | static void processVariable (idDecl t) |
616915dd | 1420 | { |
01a8227e | 1421 | uentry e; |
1422 | ctype ct; | |
7ebcc5bb | 1423 | |
01a8227e | 1424 | ct = ctype_realType (idDecl_getCtype (t)); |
1425 | ||
1426 | if (s_processingParams) | |
616915dd | 1427 | { |
1428 | cstring id = idDecl_getName (t); | |
01a8227e | 1429 | int paramno = uentryList_lookupRealName (saveParamList, id); |
28bf4b0b | 1430 | |
01a8227e | 1431 | if (paramno >= 0) |
616915dd | 1432 | { |
01a8227e | 1433 | uentry cparam = uentryList_getN (saveParamList, paramno); |
1434 | ||
1435 | DPRINTF (("Processing param: %s", uentry_unparseFull (cparam))); | |
1436 | uentry_setType (cparam, idDecl_getCtype (t)); | |
1437 | uentry_reflectQualifiers (cparam, idDecl_getQuals (t)); | |
1438 | uentry_setDeclaredOnly (cparam, context_getSaveLocation ()); | |
1439 | DPRINTF (("Processing param: %s", uentry_unparseFull (cparam))); | |
616915dd | 1440 | } |
1441 | else | |
1442 | { | |
01a8227e | 1443 | llfatalerrorLoc |
1444 | (message ("Old style declaration uses unlisted parameter: %s", | |
1445 | id)); | |
616915dd | 1446 | } |
1447 | } | |
01a8227e | 1448 | else |
616915dd | 1449 | { |
01a8227e | 1450 | fileloc loc; |
616915dd | 1451 | |
01a8227e | 1452 | if (context_inIterDef ()) |
616915dd | 1453 | { |
01a8227e | 1454 | cstring pname = makeParam (idDecl_observeId (t)); |
1455 | uentry p = usymtab_lookupSafe (pname); | |
1456 | ||
1457 | cstring_free (pname); | |
1458 | ||
1459 | if (uentry_isYield (p)) | |
616915dd | 1460 | { |
01a8227e | 1461 | e = uentry_makeParam (t, sRef_getParam (uentry_getSref (p))); |
1462 | uentry_checkYieldParam (p, e); | |
1463 | usymtab_supEntrySref (e); | |
1464 | return; | |
616915dd | 1465 | } |
1466 | } | |
01a8227e | 1467 | |
1468 | if ((hasSpecialCode () || argsUsed) | |
1469 | && ctype_isFunction (idDecl_getCtype (t))) | |
1470 | { | |
1471 | e = uentry_makeIdFunction (t); | |
1472 | reflectSpecialCode (e); | |
1473 | reflectArgsUsed (e); | |
1474 | } | |
616915dd | 1475 | else |
1476 | { | |
01a8227e | 1477 | e = uentry_makeIdVariable (t); |
1478 | } | |
1479 | ||
1480 | loc = uentry_whereDeclared (e); | |
1481 | ||
1482 | /* | |
1483 | if (context_inGlobalScope ()) | |
1484 | { | |
1485 | uentry_checkParams was here! | |
1486 | } | |
1487 | */ | |
1488 | ||
1489 | if (ctype_isFunction (uentry_getType (e))) | |
1490 | { | |
1491 | clabstract_prepareFunction (e); | |
1492 | } | |
1493 | ||
1494 | DPRINTF (("Superceding... %s", uentry_unparseFull (e))); | |
1495 | e = usymtab_supEntrySrefReturn (e); | |
1496 | DPRINTF (("After superceding... %s", uentry_unparseFull (e))); | |
1497 | ||
1498 | if (uentry_isExtern (e) && !context_inGlobalScope ()) | |
1499 | { | |
1500 | voptgenerror | |
1501 | (FLG_NESTEDEXTERN, | |
1502 | message ("Declaration using extern inside function scope: %q", | |
1503 | uentry_unparse (e)), | |
1504 | g_currentloc); | |
28bf4b0b | 1505 | |
01a8227e | 1506 | uentry_setDefined (e, fileloc_getExternal ()); |
1507 | sRef_setDefined (uentry_getSref (e), fileloc_getExternal ()); | |
1508 | } | |
1509 | ||
1510 | if (uentry_isFunction (e)) | |
1511 | { | |
1512 | if (!context_inXHFile ()) | |
616915dd | 1513 | { |
01a8227e | 1514 | checkParamNames (e); |
616915dd | 1515 | } |
01a8227e | 1516 | } |
1517 | ||
1518 | if (uentry_isVar (e) && uentry_isCheckedUnknown (e)) | |
1519 | { | |
1520 | sRef sr = uentry_getSref (e); | |
616915dd | 1521 | |
01a8227e | 1522 | if (sRef_isLocalVar (sr)) |
616915dd | 1523 | { |
01a8227e | 1524 | if (context_getFlag (FLG_IMPCHECKMODINTERNALS)) |
1525 | { | |
1526 | uentry_setCheckMod (e); | |
1527 | } | |
1528 | else | |
1529 | { | |
1530 | uentry_setUnchecked (e); | |
1531 | } | |
616915dd | 1532 | } |
01a8227e | 1533 | else if (sRef_isFileStatic (sr)) |
616915dd | 1534 | { |
01a8227e | 1535 | if (context_getFlag (FLG_IMPCHECKEDSTRICTSTATICS)) |
1536 | { | |
1537 | uentry_setCheckedStrict (e); | |
1538 | } | |
1539 | else if (context_getFlag (FLG_IMPCHECKEDSTATICS)) | |
28bf4b0b | 1540 | { |
01a8227e | 1541 | uentry_setChecked (e); |
1542 | } | |
1543 | else if (context_getFlag (FLG_IMPCHECKMODSTATICS)) | |
1544 | { | |
1545 | uentry_setCheckMod (e); | |
1546 | } | |
1547 | else | |
1548 | { | |
1549 | ; | |
28bf4b0b | 1550 | } |
616915dd | 1551 | } |
01a8227e | 1552 | else /* real global */ |
616915dd | 1553 | { |
01a8227e | 1554 | llassert (sRef_isRealGlobal (sr)); |
28bf4b0b | 1555 | |
01a8227e | 1556 | if (context_getFlag (FLG_IMPCHECKEDSTRICTGLOBALS)) |
616915dd | 1557 | { |
01a8227e | 1558 | uentry_setCheckedStrict (e); |
616915dd | 1559 | } |
01a8227e | 1560 | else if (context_getFlag (FLG_IMPCHECKEDGLOBALS)) |
616915dd | 1561 | { |
01a8227e | 1562 | uentry_setChecked (e); |
616915dd | 1563 | } |
01a8227e | 1564 | else if (context_getFlag (FLG_IMPCHECKMODGLOBALS)) |
616915dd | 1565 | { |
01a8227e | 1566 | uentry_setCheckMod (e); |
1567 | } | |
1568 | else | |
1569 | { | |
1570 | ; | |
616915dd | 1571 | } |
1572 | } | |
1573 | } | |
1574 | } | |
01a8227e | 1575 | } |
1576 | ||
1577 | void processNamedDecl (idDecl t) | |
1578 | { | |
1579 | if (qtype_isUndefined (processingType)) | |
1580 | { | |
1581 | processingType = qtype_create (ctype_int); | |
1582 | t = idDecl_fixBase (t, processingType); | |
1583 | ||
1584 | voptgenerror (FLG_IMPTYPE, | |
1585 | message ("No type before declaration name (implicit int type): %q", | |
1586 | idDecl_unparse (t)), | |
1587 | g_currentloc); | |
1588 | } | |
1589 | else | |
1590 | { | |
1591 | t = idDecl_fixBase (t, processingType); | |
1592 | } | |
1593 | ||
1594 | DPRINTF (("Declare: %s", idDecl_unparse (t))); | |
1595 | ||
1596 | if (s_processingGlobals) | |
1597 | { | |
1598 | cstring id = idDecl_getName (t); | |
1599 | uentry ue = usymtab_lookupSafe (id); | |
1600 | ||
1601 | if (!uentry_isValid (ue)) | |
1602 | { | |
1603 | llerror (FLG_UNRECOG, | |
1604 | message ("Variable used in globals list is undeclared: %s", id)); | |
1605 | } | |
1606 | else | |
1607 | { | |
1608 | if (!ctype_match (uentry_getType (ue), idDecl_getCtype (t))) | |
1609 | { | |
1610 | voptgenerror | |
1611 | (FLG_INCONDEFS, | |
1612 | message ("Variable %s used in globals list declared %s, " | |
1613 | "but listed as %s", | |
1614 | id, ctype_unparse (uentry_getType (ue)), | |
1615 | ctype_unparse (idDecl_getCtype (t))), | |
1616 | g_currentloc); | |
1617 | } | |
1618 | else | |
1619 | { | |
1620 | sRef sr = sRef_copy (uentry_getSref (ue)); | |
1621 | reflectGlobalQualifiers (sr, idDecl_getQuals (t)); | |
1622 | } | |
1623 | } | |
1624 | } | |
1625 | else if (s_processingVars) | |
1626 | { | |
1627 | processVariable (t); | |
1628 | } | |
1629 | else if (s_processingTypedef) | |
616915dd | 1630 | { |
1631 | ctype ct = idDecl_getCtype (t); | |
1632 | uentry e; | |
28bf4b0b | 1633 | |
616915dd | 1634 | DPRINTF (("Processing typedef: %s", ctype_unparse (ct))); |
1635 | ||
1636 | e = uentry_makeIdDatatype (t); | |
1637 | ||
1638 | if (cstring_equal (idDecl_getName (t), context_getBoolName ())) { | |
1639 | ctype rt = ctype_realType (ct); | |
1640 | ||
1641 | if (ctype_isEnum (rt)) { | |
1642 | ; | |
1643 | } else { | |
1644 | if (!(ctype_isInt (rt) | |
1645 | || ctype_isUnknown (rt) | |
1646 | || ctype_isChar (rt))) { | |
1647 | (void) llgenerror | |
1648 | (FLG_BOOLTYPE, | |
1649 | message ("Boolean type %s defined using non-standard type %s (integral, char or enum type expected)", | |
1650 | context_getBoolName (), | |
1651 | ctype_unparse (ct)), | |
1652 | uentry_whereLast (e)); | |
1653 | } | |
1654 | ||
1655 | ct = ctype_bool; | |
1656 | uentry_setType (e, ct); | |
1657 | } | |
1658 | } | |
1659 | ||
1660 | reflectStorageClass (e); | |
1661 | checkTypeDecl (e, ct); | |
1662 | ||
1663 | e = usymtab_supReturnTypeEntry (e); | |
616915dd | 1664 | } |
1665 | else | |
1666 | { | |
1667 | llparseerror (message ("Suspect missing struct or union keyword: %q", | |
1668 | idDecl_unparse (t))); | |
1669 | } | |
1670 | ||
1671 | } | |
1672 | ||
1673 | /* | |
1674 | ** moved from grammar | |
1675 | */ | |
1676 | ||
1677 | static idDecl fixStructDecl (/*@returned@*/ idDecl d) | |
1678 | { | |
1679 | if (ctype_isVisiblySharable (idDecl_getCtype (d)) | |
1680 | && context_getFlag (FLG_STRUCTIMPONLY)) | |
1681 | { | |
1682 | if (!qualList_hasAliasQualifier (idDecl_getQuals (d))) | |
1683 | { | |
1684 | if (qualList_hasExposureQualifier (idDecl_getQuals (d))) | |
1685 | { | |
1686 | idDecl_addQual (d, qual_createDependent ()); | |
1687 | } | |
1688 | else | |
1689 | { | |
1690 | idDecl_addQual (d, qual_createImpOnly ()); | |
1691 | } | |
1692 | } | |
1693 | } | |
1694 | ||
1695 | return d; | |
1696 | } | |
1697 | ||
1698 | ctype | |
1699 | declareUnnamedStruct (/*@only@*/ uentryList f) | |
1700 | { | |
28bf4b0b | 1701 | DPRINTF (("Unnamed struct: %s", uentryList_unparse (f))); |
1702 | ||
616915dd | 1703 | if (context_maybeSet (FLG_NUMSTRUCTFIELDS)) |
1704 | { | |
1705 | int num = uentryList_size (f); | |
1706 | int max = context_getValue (FLG_NUMSTRUCTFIELDS); | |
1707 | ||
1708 | if (num > max) | |
1709 | { | |
1710 | voptgenerror | |
1711 | (FLG_NUMSTRUCTFIELDS, | |
1712 | message ("Structure declared with %d fields " | |
1713 | "(limit is set to %d)", | |
1714 | num, max), | |
1715 | g_currentloc); | |
1716 | } | |
1717 | } | |
1718 | ||
1719 | return (ctype_createUnnamedStruct (f)); | |
1720 | } | |
1721 | ||
1722 | ctype | |
1723 | declareUnnamedUnion (/*@only@*/ uentryList f) | |
1724 | { | |
288cbc5c | 1725 | DPRINTF (("Unnamed union: %s", uentryList_unparse (f))); |
1726 | ||
616915dd | 1727 | if (context_maybeSet (FLG_NUMSTRUCTFIELDS)) |
1728 | { | |
1729 | int num = uentryList_size (f); | |
1730 | int max = context_getValue (FLG_NUMSTRUCTFIELDS); | |
1731 | ||
1732 | if (num > max) | |
1733 | { | |
1734 | voptgenerror | |
1735 | (FLG_NUMSTRUCTFIELDS, | |
1736 | message ("Union declared with %d fields " | |
1737 | "(limit is set to %d)", | |
1738 | num, max), | |
1739 | g_currentloc); | |
1740 | } | |
1741 | } | |
1742 | ||
1743 | return (ctype_createUnnamedUnion (f)); | |
1744 | } | |
1745 | ||
1746 | ctype declareStruct (cstring id, /*@only@*/ uentryList f) | |
1747 | { | |
1748 | ctype ct; | |
1749 | uentry ue; | |
1750 | int num = uentryList_size (f); | |
1751 | ||
288cbc5c | 1752 | DPRINTF (("Declare struct: %s / %s [%d]", id, uentryList_unparse (f), |
1753 | uentryList_size (f))); | |
28bf4b0b | 1754 | |
616915dd | 1755 | ct = ctype_createStruct (cstring_copy (id), f); |
28bf4b0b | 1756 | |
1757 | DPRINTF (("Ctype: %s", ctype_unparse (ct))); | |
1758 | ||
616915dd | 1759 | ue = uentry_makeStructTagLoc (id, ct); |
1760 | ||
28bf4b0b | 1761 | DPRINTF (("ue: %s", uentry_unparseFull (ue))); |
1762 | ||
616915dd | 1763 | if (context_maybeSet (FLG_NUMSTRUCTFIELDS)) |
1764 | { | |
1765 | int max = context_getValue (FLG_NUMSTRUCTFIELDS); | |
1766 | ||
1767 | if (num > max) | |
1768 | { | |
1769 | voptgenerror | |
1770 | (FLG_NUMSTRUCTFIELDS, | |
1771 | message ("Structure %q declared with %d fields " | |
1772 | "(limit is set to %d)", | |
1773 | uentry_getName (ue), num, max), | |
1774 | uentry_whereLast (ue)); | |
1775 | } | |
1776 | } | |
1777 | ||
1778 | return (usymtab_supTypeEntry (ue)); | |
1779 | } | |
1780 | ||
1781 | ctype declareUnion (cstring id, uentryList f) | |
1782 | { | |
1783 | ctype ct; | |
1784 | uentry ue; | |
1785 | int num = uentryList_size (f); | |
1786 | ||
1787 | ct = ctype_createUnion (cstring_copy (id), f); | |
1788 | ue = uentry_makeUnionTagLoc (id, ct); | |
1789 | ||
1790 | if (context_maybeSet (FLG_NUMSTRUCTFIELDS)) | |
1791 | { | |
1792 | int max = context_getValue (FLG_NUMSTRUCTFIELDS); | |
1793 | ||
1794 | if (num > max) | |
1795 | { | |
1796 | voptgenerror | |
1797 | (FLG_NUMSTRUCTFIELDS, | |
1798 | message ("Union %q declared with %d fields " | |
1799 | "(limit is set to %d)", | |
1800 | uentry_getName (ue), num, max), | |
1801 | uentry_whereLast (ue)); | |
1802 | } | |
1803 | } | |
1804 | ||
1805 | return (usymtab_supTypeEntry (ue)); | |
1806 | } | |
1807 | ||
1808 | ctype handleStruct (/*@only@*/ cstring id) | |
1809 | { | |
1810 | if (usymtab_existsStructTag (id)) | |
1811 | { | |
1812 | ctype ct = uentry_getAbstractType (usymtab_lookupStructTag (id)); | |
1813 | ||
1814 | cstring_free (id); | |
1815 | return ct; | |
1816 | } | |
1817 | else | |
1818 | { | |
1819 | return (ctype_createForwardStruct (id)); | |
1820 | } | |
1821 | } | |
1822 | ||
1823 | ctype handleUnion (/*@only@*/ cstring id) | |
1824 | { | |
1825 | if (usymtab_existsUnionTag (id)) | |
1826 | { | |
1827 | ctype ret = uentry_getAbstractType (usymtab_lookupUnionTag (id)); | |
1828 | cstring_free (id); | |
1829 | return (ret); | |
1830 | } | |
1831 | else | |
1832 | { | |
1833 | return (ctype_createForwardUnion (id)); | |
1834 | } | |
1835 | } | |
1836 | ||
1837 | ctype | |
1838 | handleEnum (cstring id) | |
1839 | { | |
1840 | if (usymtab_existsEnumTag (id)) | |
1841 | { | |
1842 | ctype ret = uentry_getAbstractType (usymtab_lookupEnumTag (id)); | |
1843 | cstring_free (id); | |
1844 | return ret; | |
1845 | } | |
1846 | else | |
1847 | { | |
140c27a8 | 1848 | return (ctype_createForwardEnum (id)); |
616915dd | 1849 | } |
1850 | } | |
1851 | ||
1852 | bool processingIterVars (void) | |
1853 | { | |
01a8227e | 1854 | return s_processingIterVars; |
616915dd | 1855 | } |
1856 | ||
1857 | uentry getCurrentIter (void) | |
1858 | { | |
1859 | return currentIter; | |
1860 | } | |
1861 | ||
1862 | static bool flipOldStyle = FALSE; | |
1863 | static bool flipNewStyle = TRUE; | |
1864 | ||
1865 | void setFlipOldStyle () { flipOldStyle = TRUE; } | |
1866 | bool isFlipOldStyle () { return flipOldStyle; } | |
1867 | bool isNewStyle () { return flipNewStyle; } | |
1868 | void setNewStyle () { flipNewStyle = TRUE; } | |
1869 | ||
1870 | /*@dependent@*/ uentryList handleParamIdList (/*@dependent@*/ uentryList params) | |
1871 | { | |
1872 | int paramno = 0; | |
1873 | ||
1874 | /* | |
1875 | ** this is a really YUCKY hack to handle old style | |
1876 | ** declarations. | |
1877 | */ | |
1878 | ||
1879 | voptgenerror (FLG_OLDSTYLE, | |
1880 | cstring_makeLiteral ("Old style function declaration"), | |
1881 | g_currentloc); | |
1882 | ||
7ebcc5bb | 1883 | DPRINTF (("Handle old style params: %s", uentryList_unparseFull (params))); |
1884 | ||
616915dd | 1885 | uentryList_elements (params, current) |
1886 | { | |
1887 | uentry_setParam (current); | |
16c024b5 | 1888 | uentry_setSref (current, sRef_makeParam |
1889 | (paramno, ctype_unknown, | |
1890 | stateInfo_makeLoc (uentry_whereLast (current), SA_DECLARED))); | |
616915dd | 1891 | paramno++; |
1892 | } end_uentryList_elements; | |
1893 | ||
1894 | setGenericParamList (params); | |
16c024b5 | 1895 | cscannerHelp_setExpectingTypeName (); |
616915dd | 1896 | |
1897 | return params; | |
1898 | } | |
1899 | ||
1900 | /*@dependent@*/ uentryList handleParamTypeList (/*@returned@*/ uentryList params) | |
1901 | { | |
1902 | if (flipOldStyle) | |
1903 | { | |
1904 | uentryList_fixMissingNames (params); | |
1905 | ||
1906 | voptgenerror (FLG_OLDSTYLE, | |
1907 | cstring_makeLiteral ("Old style function declaration."), | |
1908 | g_currentloc); | |
1909 | ||
1910 | setGenericParamList (params); | |
1911 | flipOldStyle = FALSE; | |
16c024b5 | 1912 | cscannerHelp_setExpectingTypeName (); |
616915dd | 1913 | } |
1914 | ||
1915 | return (params); | |
1916 | } | |
1917 | ||
1918 | void | |
1919 | doVaDcl () | |
1920 | { | |
1921 | ctype c = ctype_unknown; | |
1922 | cstring id = cstring_makeLiteral ("va_alist"); | |
1923 | uentry e; | |
1924 | ||
01a8227e | 1925 | if (s_processingParams) |
616915dd | 1926 | { |
1927 | int i = uentryList_lookupRealName (saveParamList, id); | |
1928 | ||
1929 | if (i >= 0) | |
1930 | { | |
6970c11b | 1931 | fileloc loc = context_getSaveLocation (); |
16c024b5 | 1932 | e = uentry_makeVariableSrefParam |
1933 | (id, c, loc, | |
1934 | sRef_makeParam (i, c, stateInfo_makeLoc (loc, SA_DECLARED))); | |
616915dd | 1935 | } |
1936 | else | |
1937 | { | |
1938 | e = uentry_undefined; /* suppress gcc message */ | |
1939 | llfatalerrorLoc (cstring_makeLiteral ("va_dcl used without va_alist")); | |
1940 | } | |
1941 | } | |
1942 | else | |
1943 | { | |
1944 | llerror (FLG_SYNTAX, cstring_makeLiteral ("va_dcl used outside of function declaration")); | |
1945 | e = uentry_makeVariableLoc (id, c); | |
1946 | } | |
1947 | ||
1948 | cstring_free (id); | |
1949 | uentry_setUsed (e, g_currentloc); | |
1950 | usymtab_supEntrySref (e); | |
1951 | } | |
1952 | ||
28bf4b0b | 1953 | /*@exposed@*/ sRef modListPointer (/*@exposed@*/ sRef s) |
616915dd | 1954 | { |
1955 | ctype ct = sRef_getType (s); | |
1956 | ctype rt = ctype_realType (ct); | |
1957 | ||
1958 | if (ctype_isAP (rt)) | |
1959 | { | |
1960 | if (context_inHeader () && ctype_isAbstract (ct)) | |
1961 | { | |
1962 | voptgenerror | |
1963 | (FLG_ABSTRACT, | |
1964 | message | |
1965 | ("Modifies clause in header file dereferences abstract " | |
1966 | "type %s (interface modifies clause should not depend " | |
1967 | "on or expose type representation): %q", | |
1968 | ctype_unparse (ct), | |
1969 | sRef_unparse (s)), | |
1970 | g_currentloc); | |
1971 | } | |
1972 | ||
1973 | return (sRef_constructPointer (s)); | |
1974 | } | |
1975 | else | |
1976 | { | |
1977 | if (ctype_isKnown (rt)) | |
1978 | { | |
1979 | voptgenerror | |
1980 | (FLG_TYPE, | |
1981 | message ("Implementation modifies clause dereferences non-pointer (type %s): %q", | |
1982 | ctype_unparse (rt), | |
1983 | sRef_unparse (s)), | |
1984 | g_currentloc); | |
1985 | } | |
1986 | ||
1987 | return s; | |
1988 | } | |
1989 | } | |
1990 | ||
1991 | /*@exposed@*/ sRef modListFieldAccess (sRef s, cstring f) | |
1992 | { | |
1993 | ctype ct = sRef_getType (s); | |
1994 | ctype rt = ctype_realType (ct); | |
1995 | ||
1996 | if (ctype_isStructorUnion (rt)) | |
1997 | { | |
1998 | uentry tf = uentryList_lookupField (ctype_getFields (rt), f); | |
1999 | ||
2000 | if (uentry_isUndefined (tf)) | |
2001 | { | |
2002 | voptgenerror (FLG_TYPE, | |
2003 | message ("Modifies list accesses non-existent " | |
2004 | "field %s of %t: %q", f, ct, | |
2005 | sRef_unparse (s)), | |
2006 | g_currentloc); | |
2007 | ||
2008 | cstring_free (f); | |
2009 | return sRef_undefined; | |
2010 | } | |
2011 | else | |
2012 | { | |
2013 | if (ctype_isAbstract (ct) && context_inHeader ()) | |
2014 | { | |
2015 | voptgenerror | |
2016 | (FLG_ABSTRACT, | |
2017 | message | |
2018 | ("Modifies clause in header file accesses abstract " | |
2019 | "type %s (interface modifies clause should not depend " | |
2020 | "on or expose type representation): %q", | |
2021 | ctype_unparse (ct), | |
2022 | sRef_unparse (s)), | |
2023 | g_currentloc); | |
2024 | } | |
2025 | } | |
2026 | ||
2027 | cstring_markOwned (f); | |
2028 | return (sRef_makeField (s, f)); | |
2029 | } | |
2030 | else | |
2031 | { | |
2032 | voptgenerror | |
2033 | (FLG_TYPE, | |
2034 | message ("Modifies clause dereferences non-pointer (type %s): %q", | |
2035 | ctype_unparse (rt), | |
2036 | sRef_unparse (s)), | |
2037 | g_currentloc); | |
2038 | ||
2039 | cstring_free (f); | |
2040 | return s; | |
2041 | } | |
2042 | } | |
2043 | ||
28bf4b0b | 2044 | /*@dependent@*/ sRef clabstract_unrecognizedGlobal (cstring s) |
616915dd | 2045 | { |
2046 | if (cstring_equalLit (s, "nothing")) | |
2047 | { | |
2048 | return sRef_makeNothing (); | |
2049 | } | |
2050 | else if (cstring_equalLit (s, "internalState")) | |
2051 | { | |
2052 | return sRef_makeInternalState (); | |
2053 | } | |
2054 | else if (cstring_equalLit (s, "fileSystem") | |
2055 | || cstring_equalLit (s, "systemState")) | |
2056 | { | |
2057 | return sRef_makeSystemState (); | |
2058 | } | |
2059 | else | |
2060 | { | |
2061 | voptgenerror | |
2062 | (FLG_UNRECOG, | |
2063 | message ("Unrecognized identifier in globals list: %s", s), | |
2064 | g_currentloc); | |
2065 | ||
2066 | return sRef_undefined; | |
2067 | } | |
2068 | } | |
2069 | ||
2070 | /*@exposed@*/ sRef modListArrowAccess (sRef s, cstring f) | |
2071 | { | |
2072 | ctype ct = sRef_getType (s); | |
2073 | ctype rt = ctype_realType (ct); | |
2074 | ||
2075 | if (ctype_isRealPointer (rt)) | |
2076 | { | |
2077 | ctype b = ctype_baseArrayPtr (rt); | |
2078 | ctype rb = ctype_realType (b); | |
2079 | ||
2080 | if (ctype_isStructorUnion (rb)) | |
2081 | { | |
2082 | uentry tf = uentryList_lookupField (ctype_getFields (rb), f); | |
2083 | ||
2084 | if (uentry_isUndefined (tf)) | |
2085 | { | |
2086 | voptgenerror (FLG_TYPE, | |
2087 | message ("Modifies list arrow accesses non-existent " | |
2088 | "field %s of %t: %q", f, b, | |
2089 | sRef_unparse (s)), | |
2090 | g_currentloc); | |
2091 | ||
2092 | cstring_free (f); | |
2093 | return sRef_undefined; | |
2094 | } | |
2095 | else | |
2096 | { | |
2097 | if (context_inHeader ()) | |
2098 | { | |
2099 | if (ctype_isAbstract (b)) | |
2100 | { | |
2101 | voptgenerror | |
2102 | (FLG_ABSTRACT, | |
2103 | message | |
2104 | ("Modifies clause in header file arrow accesses abstract " | |
2105 | "type %s (interface modifies clause should not depend " | |
2106 | "on or expose type representation): %q", | |
2107 | ctype_unparse (b), | |
2108 | sRef_unparse (s)), | |
2109 | g_currentloc); | |
2110 | } | |
2111 | } | |
2112 | else | |
2113 | { | |
146e25eb | 2114 | if (ctype_isAbstract (rt)) |
616915dd | 2115 | { |
2116 | voptgenerror | |
2117 | (FLG_ABSTRACT, | |
2118 | message | |
146e25eb | 2119 | ("Modifies clause arrow accesses inaccessible abstract " |
616915dd | 2120 | "type %s (interface modifies clause should not depend " |
2121 | "on or expose type representation): %q", | |
146e25eb | 2122 | ctype_unparse (rt), |
616915dd | 2123 | sRef_unparse (s)), |
2124 | g_currentloc); | |
2125 | } | |
2126 | } | |
2127 | } | |
2128 | ||
2129 | cstring_markOwned (f); | |
2130 | return (sRef_makeArrow (s, f)); | |
2131 | } | |
2132 | else | |
2133 | { | |
2134 | voptgenerror | |
2135 | (FLG_TYPE, | |
2136 | message ("Modifies clause arrow accesses pointer to " | |
2137 | "non-structure (type %s): %q", | |
2138 | ctype_unparse (rt), | |
2139 | sRef_unparse (s)), | |
2140 | g_currentloc); | |
2141 | } | |
2142 | } | |
2143 | else | |
2144 | { | |
2145 | voptgenerror | |
2146 | (FLG_TYPE, | |
2147 | message ("Modifies clause arrow accesses non-pointer (type %s): %q", | |
2148 | ctype_unparse (rt), | |
2149 | sRef_unparse (s)), | |
2150 | g_currentloc); | |
2151 | } | |
2152 | ||
2153 | cstring_free (f); | |
2154 | return s; | |
2155 | } | |
2156 | ||
28bf4b0b | 2157 | sRef checkStateClausesId (uentry ue) |
616915dd | 2158 | { |
2159 | cstring s = uentry_rawName (ue); | |
2160 | ||
28bf4b0b | 2161 | if (sRef_isFileOrGlobalScope (uentry_getSref (ue))) |
616915dd | 2162 | { |
2163 | voptgenerror | |
28bf4b0b | 2164 | (FLG_COMMENTERROR, |
1b8ae690 | 2165 | message ("Global variable %s used state clause. (Global variables " |
a07995d9 | 2166 | "are not recognized in state clauses. If they are present " |
2167 | "they are ignored. " | |
2168 | " If there is " | |
616915dd | 2169 | "sufficient interest in support for this, it may be " |
2170 | "added to a future release. Send mail to " | |
155af98d | 2171 | "info@splint.org.)", |
616915dd | 2172 | s), |
2173 | g_currentloc); | |
2174 | ||
2175 | return sRef_undefined; | |
2176 | } | |
2177 | else | |
2178 | { | |
2179 | if (cstring_equalLit (s, "result")) | |
2180 | { | |
2181 | if (optgenerror | |
2182 | (FLG_SYNTAX, | |
2183 | message ("Special clause list uses %s which is a variable and has special " | |
2184 | "meaning in a modifies list. (Special meaning assumed.)", s), | |
2185 | g_currentloc)) | |
2186 | { | |
2187 | uentry_showWhereDeclared (ue); | |
2188 | } | |
2189 | } | |
2190 | ||
2191 | return uentry_getSref (ue); | |
2192 | } | |
2193 | } | |
9280addf | 2194 | /*drl:1/19/2001 |
2195 | oops to 1/8/2000 | |
2196 | date is wronge .. | |
2197 | don;t know what the real date is... | |
2198 | ||
2199 | */ | |
616915dd | 2200 | |
2201 | /*drl | |
2202 | added 1/8/2000 | |
2203 | based on checkSpecClausesId | |
2204 | called by grammar | |
2205 | */ | |
b37cf05e | 2206 | |
616915dd | 2207 | sRef checkbufferConstraintClausesId (uentry ue) |
2208 | { | |
5ca29538 | 2209 | sRef sr; |
616915dd | 2210 | cstring s = uentry_rawName (ue); |
08eb3d0e | 2211 | |
616915dd | 2212 | if (cstring_equalLit (s, "result")) |
2213 | { | |
2214 | if (optgenerror | |
2215 | (FLG_SYNTAX, | |
08eb3d0e | 2216 | message ("Function clause list uses %s which is a variable and has special " |
616915dd | 2217 | "meaning in a modifies list. (Special meaning assumed.)", s), |
2218 | g_currentloc)) | |
2219 | { | |
2220 | uentry_showWhereDeclared (ue); | |
2221 | } | |
2222 | } | |
2223 | ||
5ca29538 | 2224 | DPRINTF (("constraint id: %s", uentry_unparseFull (ue))); |
2225 | sr = uentry_getSref (ue); | |
2226 | ||
2227 | if (sRef_isInvalid (sr) ) | |
2228 | { | |
2229 | 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." )); | |
2230 | } | |
b2a40ced | 2231 | |
2232 | /*@ savedCopy to used to mitigate danger of accessing freed memory*/ | |
2233 | return sRef_saveCopy (sr); | |
616915dd | 2234 | } |
2235 | ||
2236 | void checkModifiesId (uentry ue) | |
2237 | { | |
2238 | cstring s = uentry_rawName (ue); | |
2239 | ||
2240 | if (cstring_equalLit (s, "nothing") | |
2241 | || cstring_equalLit (s, "internalState") | |
2242 | || cstring_equalLit (s, "systemState") | |
2243 | || (cstring_equalLit (s, "fileSystem"))) | |
2244 | { | |
2245 | if (optgenerror | |
2246 | (FLG_SYNTAX, | |
2247 | message ("Modifies list uses %s which is a variable and has special " | |
2248 | "meaning in a modifies list. (Special meaning assumed.)", s), | |
2249 | g_currentloc)) | |
2250 | { | |
2251 | uentry_showWhereDeclared (ue); | |
2252 | } | |
2253 | } | |
2254 | } | |
2255 | ||
2256 | /*@exposed@*/ sRef fixModifiesId (cstring s) | |
2257 | { | |
2258 | sRef ret; | |
2259 | cstring pname = makeParam (s); | |
2260 | uentry ue = usymtab_lookupSafe (pname); | |
2261 | ||
2262 | cstring_free (pname); | |
2263 | ||
2264 | if (cstring_equalLit (s, "nothing")) | |
2265 | { | |
2266 | ret = sRef_makeNothing (); | |
2267 | } | |
2268 | else if (cstring_equalLit (s, "internalState")) | |
2269 | { | |
2270 | ret = sRef_makeInternalState (); | |
2271 | } | |
2272 | else if (cstring_equalLit (s, "fileSystem") | |
2273 | || cstring_equalLit (s, "systemState")) | |
2274 | { | |
2275 | ret = sRef_makeSystemState (); | |
2276 | } | |
2277 | else | |
2278 | { | |
2279 | ret = sRef_undefined; | |
2280 | } | |
2281 | ||
2282 | if (sRef_isValid (ret)) | |
2283 | { | |
2284 | if (uentry_isValid (ue)) | |
2285 | { | |
2286 | voptgenerror | |
2287 | (FLG_SYNTAX, | |
2288 | message ("Modifies list uses %s which is a parameter and has special " | |
2289 | "meaning in a modifies list. (Special meaning assumed.)", s), | |
2290 | g_currentloc); | |
2291 | } | |
2292 | } | |
2293 | else | |
2294 | { | |
2295 | if (uentry_isValid (ue)) | |
2296 | { | |
2297 | ret = uentry_getSref (ue); | |
2298 | } | |
2299 | else | |
2300 | { | |
abd7f895 | 2301 | fileloc loc = fileloc_decColumn (g_currentloc, size_toInt (cstring_length (s))); |
616915dd | 2302 | ret = sRef_undefined; |
2303 | ||
2304 | voptgenerror | |
2305 | (FLG_UNRECOG, | |
2306 | message ("Unrecognized identifier in modifies comment: %s", s), | |
2307 | loc); | |
2308 | ||
2309 | fileloc_free (loc); | |
2310 | } | |
2311 | } | |
2312 | ||
2313 | return ret; | |
2314 | } | |
2315 | ||
28bf4b0b | 2316 | sRef fixStateClausesId (cstring s) |
616915dd | 2317 | { |
2318 | sRef ret; | |
2319 | cstring pname = makeParam (s); | |
2320 | uentry ue = usymtab_lookupSafe (pname); | |
2321 | ||
2322 | cstring_free (pname); | |
2323 | ||
2324 | if (cstring_equalLit (s, "result")) | |
2325 | { | |
b072092f | 2326 | ret = sRef_makeResult (ctype_unknown); |
616915dd | 2327 | } |
2328 | else | |
2329 | { | |
2330 | ret = sRef_undefined; | |
2331 | } | |
2332 | ||
2333 | if (sRef_isValid (ret)) | |
2334 | { | |
2335 | if (uentry_isValid (ue)) | |
2336 | { | |
2337 | voptgenerror | |
2338 | (FLG_SYNTAX, | |
d9a28762 | 2339 | message ("Function clause uses %s which is a parameter and has special " |
2340 | "meaning in a function clause. (Special meaning assumed.)", s), | |
616915dd | 2341 | g_currentloc); |
2342 | } | |
2343 | } | |
2344 | else | |
2345 | { | |
2346 | if (uentry_isValid (ue)) | |
2347 | { | |
2348 | ret = uentry_getSref (ue); | |
2349 | ||
28bf4b0b | 2350 | if (sRef_isFileOrGlobalScope (ret)) |
616915dd | 2351 | { |
2352 | voptgenerror | |
2353 | (FLG_SYNTAX, | |
d9a28762 | 2354 | message ("Global variable %s used in function clause. (Global variables " |
2355 | "are not recognized in function clauses. If there is " | |
616915dd | 2356 | "sufficient interest in support for this, it may be " |
2357 | "added to a future release. Send mail to " | |
155af98d | 2358 | "info@splint.org.)", |
616915dd | 2359 | s), |
2360 | g_currentloc); | |
2361 | ||
2362 | ret = sRef_undefined; | |
2363 | } | |
2364 | } | |
2365 | else | |
2366 | { | |
86d93ed3 | 2367 | |
b2a40ced | 2368 | /* drl This is the code for structure invariants |
2369 | ||
2370 | It is no yet stable enough to be included in a Splint release. | |
2371 | */ | |
2372 | ||
86d93ed3 | 2373 | /*check that we're in a structure */ |
b2a40ced | 2374 | #if 0 |
4dd72714 | 2375 | /*@unused@*/ uentryList ueL; |
86d93ed3 | 2376 | /*@unused@*/ uentry ue2; |
4dd72714 | 2377 | /*@unused@*/ ctype ct;\r |
b2a40ced | 2378 | #endif |
abd7f895 | 2379 | fileloc loc = fileloc_decColumn (g_currentloc, size_toInt (cstring_length (s))); |
616915dd | 2380 | ret = sRef_undefined; |
4dd72714 | 2381 | # if 0 |
b2a40ced | 2382 | |
86d93ed3 | 2383 | ct = context_getLastStruct ( ct ); |
2384 | ||
2385 | llassert( ctype_isStruct(ct) ); | |
2386 | ||
2387 | ueL = ctype_getFields (ct); | |
2388 | ||
2389 | ue2 = uentryList_lookupField (ueL, s); | |
2390 | ||
2391 | if (!uentry_isUndefined(ue2) ) | |
2392 | { | |
2393 | ret = uentry_getSref(ue2); | |
2394 | ||
2395 | DPRINTF(( | |
2396 | message("Got field in structure in the annotation constraint: %s (or sref: %s)", s, sRef_unparse(ret) ) | |
2397 | )); | |
2398 | ||
2399 | return ret; | |
2400 | } | |
b2a40ced | 2401 | |
2402 | #endif | |
4dd72714 | 2403 | |
616915dd | 2404 | voptgenerror |
2405 | (FLG_UNRECOG, | |
d9a28762 | 2406 | message ("Unrecognized identifier in function clause: %s", s), |
616915dd | 2407 | loc); |
2408 | ||
2409 | fileloc_free (loc); | |
2410 | } | |
2411 | } | |
2412 | ||
2413 | return ret; | |
2414 | } | |
2415 | ||
28bf4b0b | 2416 | sRef modListArrayFetch (/*@exposed@*/ sRef s, /*@unused@*/ sRef mexp) |
616915dd | 2417 | { |
2418 | ctype ct = sRef_getType (s); | |
2419 | ctype rt = ctype_realType (ct); | |
2420 | ||
2421 | if (ctype_isAP (rt)) | |
2422 | { | |
2423 | if (context_inHeader () && ctype_isAbstract (ct)) | |
2424 | { | |
2425 | voptgenerror | |
2426 | (FLG_ABSTRACT, | |
2427 | message | |
2428 | ("Modifies clause in header file indexes abstract " | |
2429 | "type %s (interface modifies clause should not depend " | |
2430 | "on or expose type representation): %q", | |
2431 | ctype_unparse (ct), | |
2432 | sRef_unparse (s)), | |
2433 | g_currentloc); | |
2434 | } | |
2435 | ||
2436 | return (sRef_makeAnyArrayFetch (s)); | |
2437 | } | |
2438 | else | |
2439 | { | |
2440 | voptgenerror | |
2441 | (FLG_TYPE, | |
2442 | message | |
2443 | ("Implementation modifies clause uses array fetch on non-array (type %s): %q", | |
2444 | ctype_unparse (ct), sRef_unparse (s)), | |
2445 | g_currentloc); | |
2446 | return s; | |
2447 | } | |
2448 | } | |
2449 | ||
28bf4b0b | 2450 | static void clabstract_prepareFunction (uentry e) |
2451 | { | |
2452 | uentry_checkParams (e); | |
2453 | DPRINTF (("After prepare: %s", uentry_unparseFull (e))); | |
2454 | } | |
2455 | ||
2456 | sRef clabstract_checkGlobal (exprNode e) | |
2457 | { | |
2458 | sRef s; | |
2459 | llassert (exprNode_isInitializer (e)); | |
2460 | ||
2461 | s = exprNode_getSref (e); | |
2462 | DPRINTF (("Initializer: %s -> %s", exprNode_unparse (e), sRef_unparse (s))); | |
2463 | ||
2464 | exprNode_free (e); | |
2465 | return sRef_copy (s); | |
2466 | } |