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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 | |
6317f163 | 508 | void setImplicitfcnConstraints (void) |
470b7798 | 509 | { |
510 | uentryList params; | |
511 | sRef s; | |
512 | constraint c; | |
513 | params = currentParamList; | |
514 | ||
517a2db3 | 515 | if (constraintList_isDefined (implicitFcnConstraints)) |
516 | { | |
517 | constraintList_free (implicitFcnConstraints); | |
518 | } | |
4287634e | 519 | |
517a2db3 | 520 | implicitFcnConstraints = constraintList_makeNew(); |
470b7798 | 521 | |
522 | uentryList_elements (params, el) | |
523 | { | |
6317f163 | 524 | DPRINTF (("setImplicitfcnConstraints doing: %s", uentry_unparse(el))); |
470b7798 | 525 | |
517a2db3 | 526 | if (uentry_isVariable (el)) |
470b7798 | 527 | { |
4287634e | 528 | s = uentry_getSref(el); |
517a2db3 | 529 | |
530 | if (sRef_isReference (s)) | |
4287634e | 531 | { |
4287634e | 532 | DPRINTF((message ("%s is a pointer", sRef_unparse(s) ) )); |
533 | /*drl 4/26/01 | |
534 | chagned this from MaxSet(s) == 0 to MaxSet(s) >= 0 */ | |
535 | c = constraint_makeSRefWriteSafeInt (s, 0); | |
536 | ||
517a2db3 | 537 | implicitFcnConstraints = constraintList_add (implicitFcnConstraints , c); |
4287634e | 538 | |
539 | /*drl 10/23/2002 added support for out*/ | |
517a2db3 | 540 | |
541 | if (!uentry_isOut(el)) | |
4287634e | 542 | { |
543 | c = constraint_makeSRefReadSafeInt (s, 0); | |
517a2db3 | 544 | implicitFcnConstraints = constraintList_add (implicitFcnConstraints , c); |
4287634e | 545 | } |
546 | } | |
547 | else | |
548 | { | |
549 | DPRINTF((message ("%s is NOT a pointer", sRef_unparse(s) ) )); | |
550 | } | |
551 | } /*end uentry_isVariable*/ | |
4287634e | 552 | else if (uentry_isElipsisMarker (el) ) |
470b7798 | 553 | { |
517a2db3 | 554 | /* just ignore these*/ |
4287634e | 555 | ; |
470b7798 | 556 | } |
312c9815 | 557 | |
4287634e | 558 | else |
312c9815 | 559 | { |
517a2db3 | 560 | /* just ignore this |
561 | I'm not sure if this is possible though | |
4287634e | 562 | */ |
517a2db3 | 563 | ; |
312c9815 | 564 | } |
517a2db3 | 565 | } end_uentryList_elements; |
470b7798 | 566 | } |
567 | ||
2934b455 | 568 | |
517a2db3 | 569 | /*@observer@*/ constraintList getImplicitFcnConstraints (void) |
2934b455 | 570 | { |
571 | return implicitFcnConstraints; | |
572 | } | |
573 | ||
616915dd | 574 | void setCurrentParams (/*@dependent@*/ uentryList ue) |
575 | { | |
576 | currentParamList = ue; | |
577 | } | |
578 | ||
579 | void clearCurrentParams (void) | |
580 | { | |
517a2db3 | 581 | currentParamList = uentryList_undefined; |
616915dd | 582 | } |
583 | ||
584 | /* | |
585 | ** requires: uentry_isFunction (e) | |
586 | ** parameter names for current function are in currentParamList | |
587 | */ | |
588 | ||
589 | static void enterFunctionParams (uentryList params) | |
590 | { | |
591 | int paramno = 0; | |
592 | ||
593 | uentryList_elements (params, current) | |
594 | { | |
595 | if (uentry_hasName (current)) | |
596 | { | |
597 | uentry_setParamNo (current, paramno); | |
598 | usymtab_supEntry (uentry_copy (current)); | |
599 | } | |
600 | ||
601 | paramno++; | |
602 | } end_uentryList_elements; | |
603 | } | |
604 | ||
605 | ||
606 | extern void enterParamsTemp (void) | |
607 | { | |
608 | usymtab_enterScope (); | |
609 | enterFunctionParams (currentParamList); | |
610 | } | |
611 | ||
612 | extern void exitParamsTemp (void) | |
613 | { | |
614 | usymtab_quietPlainExitScope (); | |
615 | } | |
616 | ||
28bf4b0b | 617 | static /*@exposed@*/ uentry clabstract_globalDeclareFunction (idDecl tid) |
616915dd | 618 | { |
619 | ctype deftype = idDecl_getCtype (tid); | |
620 | ctype rettype; | |
621 | uentry ue; | |
622 | ||
623 | DPRINTF (("Global function: %s", idDecl_unparse (tid))); | |
28bf4b0b | 624 | |
616915dd | 625 | if (ctype_isFunction (deftype)) |
626 | { | |
28bf4b0b | 627 | rettype = ctype_getReturnType (deftype); |
616915dd | 628 | } |
629 | else | |
630 | { | |
631 | rettype = ctype_unknown; | |
632 | } | |
633 | ||
634 | /* | |
635 | ** check has been moved here... | |
636 | */ | |
637 | ||
638 | if (ctype_isFunction (idDecl_getCtype (tid))) | |
639 | { | |
640 | ue = uentry_makeIdFunction (tid); | |
641 | reflectSpecialCode (ue); | |
642 | reflectArgsUsed (ue); | |
01a8227e | 643 | reflectStorageClass (ue); |
644 | uentry_checkParams (ue); | |
645 | ||
646 | DPRINTF (("Supercede function: %s", uentry_unparseFull (ue))); | |
647 | ||
648 | ue = usymtab_supGlobalEntryReturn (ue); | |
649 | DPRINTF (("After supercede function: %s", uentry_unparseFull (ue))); | |
650 | ||
651 | DPRINTF (("Enter function: %s", uentry_unparseFull (ue))); | |
652 | context_enterFunction (ue); | |
653 | enterFunctionParams (uentry_getParams (ue)); | |
654 | ||
655 | resetStorageClass (); | |
656 | DPRINTF (("Function: %s", uentry_unparseFull (ue))); | |
657 | return (ue); | |
616915dd | 658 | } |
659 | else | |
660 | { | |
01a8227e | 661 | llparseerror (message ("Non-function declaration: %q", |
616915dd | 662 | idDecl_unparse (tid))); |
01a8227e | 663 | return (uentry_undefined); |
616915dd | 664 | } |
616915dd | 665 | } |
666 | ||
667 | /* | |
668 | ** for now, no type checking | |
669 | ** (must check later though!) | |
670 | */ | |
671 | ||
672 | static /*@only@*/ uentry globalDeclareOldStyleFunction (idDecl tid) | |
673 | { | |
674 | uentry ue; | |
675 | ||
676 | /* | |
677 | ** check has been moved here... | |
678 | */ | |
679 | ||
680 | if (cstring_equalLit (idDecl_observeId (tid), "main")) | |
681 | { | |
682 | context_setFlagTemp (FLG_MAINTYPE, FALSE); | |
683 | } | |
684 | ||
685 | ue = uentry_makeIdFunction (tid); | |
686 | reflectStorageClass (ue); | |
687 | reflectSpecialCode (ue); | |
688 | reflectArgsUsed (ue); | |
689 | uentry_setDefined (ue, g_currentloc); | |
28bf4b0b | 690 | uentry_checkParams (ue); |
616915dd | 691 | resetStorageClass (); |
7ebcc5bb | 692 | |
693 | /* context_enterOldStyleScope (); */ | |
694 | ||
616915dd | 695 | return (ue); |
696 | } | |
697 | ||
698 | static void oldStyleDeclareFunction (/*@only@*/ uentry e) | |
699 | { | |
700 | uentryList params = saveParamList; | |
701 | ctype rt = uentry_getType (e); | |
702 | ||
703 | llassert (ctype_isFunction (rt)); | |
704 | ||
ccf0a4a8 | 705 | if (uentry_hasStateClauseList (e) |
706 | || uentry_hasConditions (e)) | |
707 | { | |
708 | llfatalerror (message ("%q: Old-style function declaration uses a clause (rewrite with function parameters): %q", | |
709 | fileloc_unparse (g_currentloc), uentry_unparse (e))); | |
710 | } | |
711 | ||
616915dd | 712 | e = usymtab_supGlobalEntryReturn (e); |
713 | ||
714 | context_enterFunction (e); | |
715 | enterFunctionParams (params); | |
716 | saveParamList = uentryList_undefined; | |
717 | resetStorageClass (); | |
718 | } | |
719 | ||
7ebcc5bb | 720 | static void oldStyleCompleteFunction (/*@only@*/ uentry e) |
721 | { | |
722 | uentryList params = saveParamList; | |
723 | ctype rt = uentry_getType (e); | |
724 | ||
725 | llassert (ctype_isFunction (rt)); | |
726 | ||
727 | if (uentry_hasStateClauseList (e) | |
728 | || uentry_hasConditions (e)) | |
729 | { | |
730 | llfatalerror (message ("%q: Old-style function declaration uses a clause (rewrite with function parameters): %q", | |
731 | fileloc_unparse (g_currentloc), uentry_unparse (e))); | |
732 | } | |
733 | ||
734 | e = usymtab_supGlobalEntryReturn (e); | |
735 | ||
736 | context_completeOldStyleFunction (e); | |
737 | enterFunctionParams (params); | |
738 | saveParamList = uentryList_undefined; | |
739 | resetStorageClass (); | |
740 | } | |
741 | ||
28bf4b0b | 742 | void clabstract_declareFunction (idDecl tid) /*@globals undef saveFunction; @*/ |
616915dd | 743 | { |
744 | uentry ue; | |
745 | ||
746 | DPRINTF (("Declare function: %s", idDecl_unparse (tid))); | |
747 | ||
01a8227e | 748 | if (ctype_isUnknown (idDecl_getCtype (tid))) |
616915dd | 749 | { |
01a8227e | 750 | /* |
751 | ** No type, its really a plain name (int) declaration | |
752 | */ | |
753 | ||
754 | voptgenerror (FLG_IMPTYPE, | |
755 | message ("No type before declaration name (implicit int type): %q", | |
756 | idDecl_unparse (tid)), | |
757 | g_currentloc); | |
758 | tid = idDecl_replaceCtype (tid, ctype_int); | |
759 | processVariable (tid); | |
760 | saveFunction = uentry_undefined; | |
616915dd | 761 | } |
762 | else | |
763 | { | |
01a8227e | 764 | if (s_processingParams) |
616915dd | 765 | { |
01a8227e | 766 | ue = globalDeclareOldStyleFunction (tid); |
767 | saveFunction = ue; | |
768 | DPRINTF (("Set save function: %s", uentry_unparseFull (ue))); | |
616915dd | 769 | } |
770 | else | |
771 | { | |
01a8227e | 772 | saveFunction = uentry_undefined; |
773 | ||
774 | if (context_inRealFunction ()) | |
616915dd | 775 | { |
01a8227e | 776 | ue = uentry_makeVariableLoc (idDecl_observeId (tid), ctype_unknown); |
777 | ||
778 | llparseerror (message ("Function declared inside function: %q", | |
616915dd | 779 | idDecl_unparse (tid))); |
780 | ||
01a8227e | 781 | context_quietExitFunction (); |
782 | ue = usymtab_supEntryReturn (ue); | |
616915dd | 783 | } |
784 | else | |
785 | { | |
01a8227e | 786 | if (context_inInnerScope ()) |
787 | { | |
788 | llparseerror (message ("Declaration in inner context: %q", | |
789 | idDecl_unparse (tid))); | |
790 | ||
791 | sRef_setGlobalScope (); | |
792 | ue = uentry_makeVariableLoc (idDecl_observeId (tid), | |
793 | ctype_unknown); | |
794 | ue = usymtab_supGlobalEntryReturn (ue); | |
795 | sRef_clearGlobalScope (); | |
796 | } | |
797 | else | |
798 | { | |
799 | ue = clabstract_globalDeclareFunction (tid); | |
800 | } | |
616915dd | 801 | } |
01a8227e | 802 | |
803 | resetGlobals (); | |
616915dd | 804 | } |
b87215ab | 805 | |
01a8227e | 806 | resetStorageClass (); |
616915dd | 807 | } |
b87215ab | 808 | |
809 | idDecl_free (tid); | |
616915dd | 810 | } |
811 | ||
812 | void declareStaticFunction (idDecl tid) /*@globals undef saveFunction; @*/ | |
813 | { | |
814 | uentry ue; | |
815 | ||
816 | DPRINTF (("Declare static funciton: %s", idDecl_unparse (tid))); | |
817 | ||
01a8227e | 818 | if (s_processingParams) |
616915dd | 819 | { |
820 | ue = globalDeclareOldStyleFunction (tid); | |
821 | saveFunction = ue; | |
822 | } | |
823 | else | |
824 | { | |
825 | saveFunction = uentry_undefined; | |
826 | ||
827 | if (context_inRealFunction ()) | |
828 | { | |
829 | ue = uentry_makeVariableLoc (idDecl_observeId (tid), ctype_unknown); | |
830 | ||
831 | llparseerror (message ("Function declared inside function: %q", | |
832 | idDecl_unparse (tid))); | |
833 | ||
834 | context_quietExitFunction (); | |
835 | ue = usymtab_supEntryReturn (ue); | |
836 | } | |
837 | else | |
838 | { | |
839 | if (context_inInnerScope ()) | |
840 | { | |
841 | llparseerror (message ("Declaration in inner context: %q", | |
842 | idDecl_unparse (tid))); | |
843 | ||
844 | sRef_setGlobalScope (); | |
845 | ue = uentry_makeVariableLoc (idDecl_observeId (tid), | |
846 | ctype_unknown); | |
847 | ue = usymtab_supGlobalEntryReturn (ue); | |
848 | sRef_clearGlobalScope (); | |
849 | } | |
850 | else | |
851 | { | |
852 | ctype deftype = idDecl_getCtype (tid); | |
853 | ctype rettype; | |
854 | ||
855 | if (ctype_isFunction (deftype)) | |
856 | { | |
28bf4b0b | 857 | rettype = ctype_getReturnType (deftype); |
616915dd | 858 | } |
859 | else | |
860 | { | |
861 | rettype = ctype_unknown; | |
862 | } | |
863 | ||
864 | /* | |
865 | ** check has been moved here... | |
866 | */ | |
867 | ||
868 | if (ctype_isFunction (idDecl_getCtype (tid))) | |
869 | { | |
870 | ue = uentry_makeIdFunction (tid); | |
871 | reflectSpecialCode (ue); | |
872 | reflectArgsUsed (ue); | |
873 | } | |
874 | else | |
875 | { | |
01a8227e | 876 | DPRINTF (("Here we are!")); |
616915dd | 877 | llparseerror (message ("Inconsistent function declaration: %q", |
878 | idDecl_unparse (tid))); | |
879 | ||
880 | tid = idDecl_replaceCtype | |
881 | (tid, ctype_makeFunction (ctype_unknown, uentryList_undefined)); | |
882 | ue = uentry_makeIdFunction (tid); | |
883 | } | |
884 | ||
885 | reflectStorageClass (ue); | |
886 | uentry_setStatic (ue); | |
887 | ||
888 | uentry_checkParams (ue); | |
616915dd | 889 | |
890 | DPRINTF (("Sub global entry: %s", uentry_unparse (ue))); | |
891 | ue = usymtab_supGlobalEntryReturn (ue); | |
892 | ||
893 | context_enterFunction (ue); | |
894 | enterFunctionParams (uentry_getParams (ue)); | |
895 | resetStorageClass (); | |
896 | } | |
897 | } | |
898 | ||
899 | resetGlobals (); | |
900 | } | |
901 | ||
902 | resetStorageClass (); | |
903 | idDecl_free (tid); | |
904 | } | |
905 | ||
906 | void | |
907 | checkTypeDecl (uentry e, ctype rep) | |
908 | { | |
909 | cstring n = uentry_getName (e); | |
910 | ||
28bf4b0b | 911 | DPRINTF (("Check type decl: %s", uentry_unparseFull (e))); |
616915dd | 912 | |
913 | if (cstring_equal (context_getBoolName (), n)) | |
914 | { | |
915 | ctype rrep = ctype_realType (rep); | |
916 | ||
917 | /* | |
918 | ** for abstract enum types, we need to fix the enum members: | |
919 | ** they should have the abstract type, not the rep type. | |
920 | */ | |
921 | ||
922 | if (ctype_isEnum (ctype_realType (rrep))) | |
923 | { | |
924 | enumNameList el = ctype_elist (rrep); | |
925 | ||
926 | enumNameList_elements (el, ye) | |
927 | { | |
928 | if (usymtab_existsGlob (ye)) | |
929 | { | |
930 | uentry ue = usymtab_lookupSafe (ye); | |
931 | uentry_setType (ue, ctype_bool); | |
932 | } | |
933 | ||
934 | if (cstring_equal (context_getTrueName (), ye) | |
935 | || cstring_equal (context_getFalseName (), ye)) | |
936 | { | |
937 | ; | |
938 | } | |
939 | else | |
940 | { | |
941 | vgenhinterror | |
942 | (FLG_SYNTAX, | |
943 | message ("Member of boolean enumerated type definition " | |
0bd4c301 | 944 | "does not match name set to represent true " |
945 | "or false: %s", | |
616915dd | 946 | ye), |
947 | message ("Use -boolfalse and -booltrue to set the " | |
948 | "name of false and true boolean values."), | |
949 | uentry_whereDefined (e)); | |
950 | } | |
951 | } end_enumNameList_elements; | |
952 | } | |
953 | } | |
954 | ||
955 | if (usymtab_exists (n)) | |
956 | { | |
957 | usymId llm = usymtab_getId (n); | |
b73d1009 | 958 | uentry le = usymtab_getTypeEntry (typeId_fromUsymId (llm)); |
616915dd | 959 | |
960 | uentry_setDeclared (e, g_currentloc); | |
6970c11b | 961 | uentry_setSref (e, sRef_makeGlobal (llm, uentry_getType (le), stateInfo_currentLoc ())); |
616915dd | 962 | |
963 | DPRINTF (("Here we are: %s / %s", | |
964 | n, context_getBoolName ())); | |
965 | ||
966 | if (uentry_isAbstractDatatype (le)) | |
967 | { | |
968 | ctype rrep = ctype_realType (rep); | |
969 | ||
28bf4b0b | 970 | DPRINTF (("Abstract type: %s", uentry_unparseFull (le))); |
971 | ||
616915dd | 972 | /* |
973 | ** for abstract enum types, we need to fix the enum members: | |
974 | ** they should have the abstract type, not the rep type. | |
975 | */ | |
976 | ||
977 | if (ctype_isEnum (ctype_realType (rrep))) | |
978 | { | |
979 | ctype at = uentry_getAbstractType (le); | |
980 | enumNameList el = ctype_elist (rrep); | |
981 | ||
982 | enumNameList_elements (el, ye) | |
983 | { | |
984 | if (usymtab_existsGlob (ye)) | |
985 | { | |
986 | uentry ue = usymtab_lookupSafe (ye); | |
987 | ||
988 | llassert (uentry_isEitherConstant (ue)); | |
2cecdaff | 989 | |
990 | /* evans 2002-04-22 */ | |
991 | if (ctype_isBool (uentry_getType (ue))) | |
992 | { | |
993 | /* | |
994 | ** If set using -booltrue or -boolfalse, don't change the type. | |
995 | */ | |
996 | } | |
997 | else | |
998 | { | |
999 | llassertprint (ctype_match (uentry_getType (ue), rrep), | |
1000 | ("Bad enum: %s / %s", | |
1001 | uentry_unparse (ue), | |
1002 | ctype_unparse (rrep))); | |
1003 | ||
1004 | uentry_setType (ue, at); | |
1005 | } | |
616915dd | 1006 | } |
1007 | } end_enumNameList_elements; | |
1008 | } | |
1009 | ||
1010 | if (uentry_isMutableDatatype (le)) | |
1011 | { | |
1012 | /* maybe more complicated if abstract and immutable ? */ | |
1013 | ||
1014 | if (!ctype_isRealPointer (rep) && !ctype_isRealAbstract (rep)) | |
1015 | { | |
1016 | voptgenerror | |
1017 | (FLG_MUTREP, | |
1018 | message ("Mutable abstract type %s declared without pointer " | |
1019 | "indirection: %s (violates assignment semantics)", | |
1020 | n, ctype_unparse (rep)), | |
1021 | uentry_whereDefined (e)); | |
1022 | ||
1023 | uentry_setMutable (e); | |
1024 | } | |
1025 | } | |
1026 | } | |
1027 | } | |
1028 | else | |
1029 | { | |
1030 | fileloc fl = uentry_whereDeclared (e); | |
1031 | ||
1032 | if (context_getFlag (FLG_LIKELYBOOL) | |
1033 | && !context_getFlag (FLG_BOOLINT)) | |
1034 | { | |
1035 | if ((cstring_equalLit (n, "BOOL") | |
1036 | || cstring_equalLit (n, "Bool") | |
1037 | || cstring_equalLit (n, "bool") | |
1038 | || cstring_equalLit (n, "boolean") | |
1039 | || cstring_equalLit (n, "Boolean") | |
1040 | || cstring_equalLit (n, "BOOLEAN")) | |
1041 | && !(cstring_equal (n, context_getBoolName ()))) | |
1042 | { | |
1043 | if (context_setBoolName ()) { | |
1044 | voptgenerror | |
1045 | (FLG_LIKELYBOOL, | |
1046 | message ("Type %s is probably meant as a boolean type, but does " | |
1047 | "not match the boolean type name \"%s\".", | |
1048 | n, | |
1049 | context_getBoolName ()), | |
1050 | fl); | |
1051 | } else | |
1052 | voptgenerror | |
1053 | (FLG_LIKELYBOOL, | |
1054 | message ("Type %s is probably meant as a boolean type, " | |
1055 | "but the boolean type name is not set. " | |
1056 | "Use -booltype %s to set it.", | |
1057 | n, | |
1058 | n), | |
1059 | fl); | |
1060 | } | |
1061 | } | |
1062 | ||
1063 | if (!uentry_isStatic (e) | |
1064 | && !ctype_isFunction (uentry_getType (e)) | |
1065 | && !fileloc_isLib (fl) | |
1066 | && !fileloc_isImport (fl) | |
1067 | && fileloc_isHeader (fl)) | |
1068 | { | |
1069 | voptgenerror (FLG_EXPORTTYPE, | |
1070 | message ("Type exported, but not specified: %s\n", n), | |
1071 | fl); | |
1072 | } | |
1073 | } | |
1074 | ||
1075 | cstring_free (n); | |
1076 | } | |
1077 | ||
1078 | uentryList | |
1079 | fixUentryList (idDeclList tl, qtype q) | |
1080 | { | |
1081 | uentryList f = uentryList_new (); | |
1082 | ||
1083 | idDeclList_elements (tl, i) | |
1084 | { | |
1085 | if (idDecl_isDefined (i)) | |
1086 | { | |
1087 | uentry ue; | |
1088 | uentry old; | |
1089 | ctype rt; | |
1090 | ||
1091 | (void) idDecl_fixBase (i, q); | |
1092 | ||
1093 | /* | |
1094 | ** implicit annotations | |
1095 | */ | |
1096 | ||
1097 | (void) fixStructDecl (i); | |
1098 | ||
1099 | ue = uentry_makeIdVariable (i); | |
1100 | rt = ctype_realType (uentry_getType (ue)); | |
1101 | ||
1102 | /* | |
1103 | ** where is this here??? | |
1104 | ||
1105 | if (ctype_isArray (rt) || ctype_isSU (rt)) | |
1106 | { | |
1107 | sRef_setAllocated (uentry_getSref (ue), uentry_whereDefined (ue)); | |
1108 | } | |
1109 | ||
1110 | ** | |
1111 | */ | |
1112 | ||
1113 | if (uentry_isValid (old = uentryList_lookupField (f, uentry_rawName (ue)))) | |
1114 | { | |
1115 | if (optgenerror (FLG_SYNTAX, | |
1116 | message ("Field name reused: %s", uentry_rawName (ue)), | |
1117 | uentry_whereDefined (ue))) | |
1118 | { | |
1119 | llgenmsg (message ("Previous use of %s", uentry_rawName (ue)), | |
1120 | uentry_whereDefined (old)); | |
1121 | } | |
1122 | } | |
1123 | ||
1124 | f = uentryList_add (f, ue); | |
1125 | } | |
1126 | } end_idDeclList_elements; | |
1127 | ||
1128 | idDeclList_free (tl); | |
1129 | return (f); | |
1130 | } | |
1131 | ||
1132 | /* | |
1133 | ** This is a hack to support unnamed struct/union fields as done by | |
1134 | ** Microsoft VC++. It is not supported by the ANSI standard. | |
1135 | ** | |
1136 | ** The inner fields are added to the outer structure. This is meaningful | |
1b8ae690 | 1137 | ** for nesting structs inside unions, but Splint does no related |
616915dd | 1138 | ** checking. |
1139 | */ | |
1140 | ||
1141 | uentryList | |
1142 | fixUnnamedDecl (qtype q) | |
1143 | { | |
1144 | ctype ct = ctype_realType (qtype_getType (q)); | |
1145 | ||
1146 | if (ctype_isStruct (ct) || ctype_isUnion (ct)) | |
1147 | { | |
288cbc5c | 1148 | return uentryList_single (uentry_makeUnnamedVariable (ct)); |
616915dd | 1149 | } |
f32c0a7e | 1150 | else if (ctype_isEnum (ct)) |
1151 | { | |
1152 | /* evans 2002-02-05: nothing to do for unnamed enum lists */ | |
1153 | return uentryList_undefined; | |
1154 | } | |
616915dd | 1155 | else |
b642ab7c | 1156 | { |
1157 | voptgenerror | |
1158 | (FLG_SYNTAX, | |
1159 | message ("Type name in field declarations: %s", qtype_unparse (q)), | |
1160 | g_currentloc); | |
616915dd | 1161 | } |
1162 | ||
1163 | return uentryList_undefined; | |
1164 | } | |
1165 | ||
1166 | void setStorageClass (storageClassCode sc) | |
1167 | { | |
1168 | storageClass = sc; | |
1169 | } | |
1170 | ||
1171 | void | |
1172 | setProcessingIterVars (uentry iter) | |
1173 | { | |
01a8227e | 1174 | s_processingIterVars = TRUE; |
616915dd | 1175 | currentIter = iter; |
1176 | saveIterParamNo = 0; | |
1177 | } | |
1178 | ||
1179 | void | |
1180 | setProcessingGlobalsList () | |
1181 | { | |
01a8227e | 1182 | s_processingGlobals = TRUE; |
616915dd | 1183 | fcnNoGlobals = FALSE; |
1184 | } | |
1185 | ||
1186 | static bool ProcessingGlobMods = FALSE; | |
1187 | ||
1188 | void | |
1189 | setProcessingGlobMods () | |
1190 | { | |
1191 | ProcessingGlobMods = TRUE; | |
1192 | } | |
1193 | ||
1194 | void | |
1195 | clearProcessingGlobMods () | |
1196 | { | |
1197 | ProcessingGlobMods = FALSE; | |
1198 | } | |
1199 | ||
1200 | bool | |
1201 | isProcessingGlobMods () | |
1202 | { | |
1203 | return (ProcessingGlobMods); | |
1204 | } | |
1205 | ||
1206 | static void resetGlobals (void) | |
1207 | { | |
01a8227e | 1208 | s_processingGlobals = FALSE; |
616915dd | 1209 | fcnNoGlobals = FALSE; |
1210 | } | |
1211 | ||
1212 | void | |
1213 | unsetProcessingGlobals () | |
1214 | { | |
01a8227e | 1215 | s_processingGlobals = FALSE; |
616915dd | 1216 | } |
1217 | ||
1218 | void | |
1219 | setProcessingVars (/*@only@*/ qtype q) | |
1220 | { | |
01a8227e | 1221 | s_processingVars = TRUE; |
616915dd | 1222 | qtype_free (processingType); |
1223 | processingType = q; | |
1224 | } | |
1225 | ||
1226 | static void | |
1227 | setGenericParamList (/*@dependent@*/ uentryList pm) | |
1228 | { | |
01a8227e | 1229 | s_processingParams = TRUE; |
616915dd | 1230 | saveParamList = pm; |
1231 | } | |
1232 | ||
1233 | void | |
e83c79ec | 1234 | setProcessingTypedef (qtype q) |
616915dd | 1235 | { |
01a8227e | 1236 | s_processingTypedef = TRUE; |
616915dd | 1237 | |
1238 | qtype_free (processingType); | |
1239 | processingType = q; | |
1240 | } | |
1241 | ||
1242 | void | |
1243 | unsetProcessingVars () | |
1244 | { | |
1245 | resetStorageClass (); | |
01a8227e | 1246 | s_processingVars = FALSE; |
616915dd | 1247 | } |
1248 | ||
1249 | void | |
7ebcc5bb | 1250 | oldStyleDoneParams () |
616915dd | 1251 | { |
01a8227e | 1252 | if (s_processingParams) |
616915dd | 1253 | { |
1254 | if (uentry_isInvalid (saveFunction)) | |
1255 | { | |
1256 | llbuglit ("unsetProcessingVars: no saved function\n"); | |
616915dd | 1257 | } |
1258 | else | |
1259 | { | |
28bf4b0b | 1260 | ctype ct = ctype_getReturnType (uentry_getType (saveFunction)); |
616915dd | 1261 | uentryList params = uentryList_copy (saveParamList); |
1262 | ctype ct2 = ctype_makeFunction (ct, params); | |
1263 | ||
1264 | uentry_setType (saveFunction, ct2); | |
01a8227e | 1265 | s_processingParams = FALSE; |
616915dd | 1266 | |
7ebcc5bb | 1267 | oldStyleCompleteFunction (saveFunction); |
616915dd | 1268 | saveFunction = uentry_undefined; |
1269 | resetGlobals (); | |
1270 | } | |
1271 | } | |
1272 | else | |
1273 | { | |
1274 | /* | |
1275 | ** If the paramlist used a type name, we could be here. | |
1276 | */ | |
1277 | ||
1278 | llfatalerror (message ("%q: Old-style function parameter list uses a " | |
1279 | "type name.", fileloc_unparse (g_currentloc))); | |
1280 | } | |
1281 | } | |
1282 | ||
1283 | void | |
1284 | checkDoneParams () | |
1285 | { | |
1286 | if (uentry_isValid (saveFunction)) | |
1287 | { | |
1288 | /* | |
1289 | ** old style declaration | |
1290 | */ | |
1291 | ||
28bf4b0b | 1292 | ctype ct = ctype_getReturnType (uentry_getType (saveFunction)); |
616915dd | 1293 | ctype ct2; |
1294 | ||
7ebcc5bb | 1295 | DPRINTF (("save function: %s", uentry_unparseFull (saveFunction))); |
1296 | ||
616915dd | 1297 | uentryList_elements (saveParamList, current) |
1298 | { | |
1299 | uentry_setType (current, ctype_int); /* all params are ints */ | |
1300 | } end_uentryList_elements; | |
1301 | ||
1302 | ct2 = ctype_makeParamsFunction (ct, uentryList_copy (saveParamList)); | |
1303 | ||
1304 | uentry_setType (saveFunction, ct2); | |
01a8227e | 1305 | s_processingParams = FALSE; |
616915dd | 1306 | |
1307 | oldStyleDeclareFunction (saveFunction); | |
1308 | saveFunction = uentry_undefined; | |
1309 | } | |
1310 | } | |
1311 | ||
e83c79ec | 1312 | void clabstract_declareType (/*@only@*/ exprNodeList decls, /*@only@*/ warnClause warn) |
1313 | { | |
01a8227e | 1314 | llassert (s_processingTypedef); |
e83c79ec | 1315 | |
80489f0a | 1316 | DPRINTF (("Declare type: %s", exprNodeList_unparse (decls))); |
1317 | ||
e83c79ec | 1318 | if (warnClause_isDefined (warn)) |
1319 | { | |
80489f0a | 1320 | DPRINTF (("Has a warn clause!")); |
1321 | DPRINTF (("Warn: %s", warnClause_unparse (warn))); | |
1322 | ||
e83c79ec | 1323 | exprNodeList_elements (decls, el) |
1324 | { | |
1325 | uentry ue = exprNode_getUentry (el); | |
1326 | cstring uname = uentry_getName (ue); | |
1327 | ||
1328 | DPRINTF (("Entry: %s", exprNode_unparse (el))); | |
1329 | ||
1330 | /* | |
1331 | ** Need to lookup again to make sure we have the right one... | |
1332 | */ | |
1333 | ||
15b3d2b2 | 1334 | ue = usymtab_lookupExposeGlob (uname); |
e83c79ec | 1335 | |
1336 | llassert (uentry_isValid (ue)); | |
1337 | llassert (uentry_isDatatype (ue)); | |
1338 | ||
1339 | DPRINTF (("Warning for %s: %s", | |
1340 | uentry_unparse (ue), warnClause_unparse (warn))); | |
1341 | ||
1342 | uentry_addWarning (ue, warnClause_copy (warn)); | |
80489f0a | 1343 | DPRINTF (("After add warning: %s", uentry_unparseFull (ue))); |
15b3d2b2 | 1344 | cstring_free (uname); |
e83c79ec | 1345 | } end_exprNodeList_elements; |
1346 | } | |
1347 | ||
1348 | warnClause_free (warn); | |
1349 | exprNodeList_free (decls); | |
1350 | unsetProcessingTypedef (); | |
1351 | } | |
1352 | ||
616915dd | 1353 | void |
1354 | unsetProcessingTypedef () | |
1355 | { | |
01a8227e | 1356 | s_processingTypedef = FALSE; |
616915dd | 1357 | } |
1358 | ||
1359 | void checkConstant (qtype t, idDecl id) | |
1360 | { | |
1361 | uentry e; | |
7534721d | 1362 | |
616915dd | 1363 | id = idDecl_fixBase (id, t); |
1364 | e = uentry_makeIdConstant (id); | |
7534721d | 1365 | |
616915dd | 1366 | reflectStorageClass (e); |
1367 | resetStorageClass (); | |
1368 | ||
d89a0c94 | 1369 | DPRINTF (("Constant: %s", uentry_unparseFull (e))); |
616915dd | 1370 | usymtab_supGlobalEntry (e); |
1371 | } | |
1372 | ||
1373 | void checkValueConstant (qtype t, idDecl id, exprNode e) | |
1374 | { | |
1375 | uentry ue; | |
1376 | ||
1377 | id = idDecl_fixBase (id, t); | |
1378 | ue = uentry_makeIdConstant (id); | |
1379 | reflectStorageClass (ue); | |
1380 | resetStorageClass (); | |
1381 | ||
1382 | if (exprNode_isDefined (e)) | |
1383 | { | |
1384 | if (!exprNode_matchType (uentry_getType (ue), e)) | |
1385 | { | |
1386 | (void) gentypeerror | |
1387 | (exprNode_getType (e), e, | |
1388 | uentry_getType (ue), exprNode_undefined, | |
1389 | message ("Constant %q initialized to type %t, expects %t: %s", | |
1390 | uentry_getName (ue), | |
1391 | exprNode_getType (e), | |
1392 | uentry_getType (ue), | |
1393 | exprNode_unparse (e)), | |
1394 | exprNode_loc (e)); | |
1395 | } | |
1396 | else | |
1397 | { | |
1398 | if (exprNode_hasValue (e)) | |
1399 | { | |
1400 | uentry_mergeConstantValue (ue, multiVal_copy (exprNode_getValue (e))); | |
1401 | } | |
b9904f57 | 1402 | else |
1403 | { | |
1404 | DPRINTF (("No value: %s", exprNode_unparse (e))); | |
1405 | } | |
616915dd | 1406 | } |
1407 | } | |
1408 | ||
b9904f57 | 1409 | DPRINTF (("Constant value: %s", uentry_unparseFull (ue))); |
616915dd | 1410 | usymtab_supGlobalEntry (ue); |
1411 | } | |
1412 | ||
01a8227e | 1413 | static void processVariable (idDecl t) |
616915dd | 1414 | { |
01a8227e | 1415 | uentry e; |
1416 | ctype ct; | |
7ebcc5bb | 1417 | |
01a8227e | 1418 | ct = ctype_realType (idDecl_getCtype (t)); |
1419 | ||
1420 | if (s_processingParams) | |
616915dd | 1421 | { |
1422 | cstring id = idDecl_getName (t); | |
01a8227e | 1423 | int paramno = uentryList_lookupRealName (saveParamList, id); |
28bf4b0b | 1424 | |
01a8227e | 1425 | if (paramno >= 0) |
616915dd | 1426 | { |
01a8227e | 1427 | uentry cparam = uentryList_getN (saveParamList, paramno); |
1428 | ||
1429 | DPRINTF (("Processing param: %s", uentry_unparseFull (cparam))); | |
1430 | uentry_setType (cparam, idDecl_getCtype (t)); | |
1431 | uentry_reflectQualifiers (cparam, idDecl_getQuals (t)); | |
1432 | uentry_setDeclaredOnly (cparam, context_getSaveLocation ()); | |
1433 | DPRINTF (("Processing param: %s", uentry_unparseFull (cparam))); | |
616915dd | 1434 | } |
1435 | else | |
1436 | { | |
01a8227e | 1437 | llfatalerrorLoc |
1438 | (message ("Old style declaration uses unlisted parameter: %s", | |
1439 | id)); | |
616915dd | 1440 | } |
1441 | } | |
01a8227e | 1442 | else |
616915dd | 1443 | { |
01a8227e | 1444 | fileloc loc; |
616915dd | 1445 | |
01a8227e | 1446 | if (context_inIterDef ()) |
616915dd | 1447 | { |
01a8227e | 1448 | cstring pname = makeParam (idDecl_observeId (t)); |
1449 | uentry p = usymtab_lookupSafe (pname); | |
1450 | ||
1451 | cstring_free (pname); | |
1452 | ||
1453 | if (uentry_isYield (p)) | |
616915dd | 1454 | { |
01a8227e | 1455 | e = uentry_makeParam (t, sRef_getParam (uentry_getSref (p))); |
1456 | uentry_checkYieldParam (p, e); | |
1457 | usymtab_supEntrySref (e); | |
1458 | return; | |
616915dd | 1459 | } |
1460 | } | |
01a8227e | 1461 | |
1462 | if ((hasSpecialCode () || argsUsed) | |
1463 | && ctype_isFunction (idDecl_getCtype (t))) | |
1464 | { | |
1465 | e = uentry_makeIdFunction (t); | |
1466 | reflectSpecialCode (e); | |
1467 | reflectArgsUsed (e); | |
1468 | } | |
616915dd | 1469 | else |
1470 | { | |
01a8227e | 1471 | e = uentry_makeIdVariable (t); |
1472 | } | |
1473 | ||
1474 | loc = uentry_whereDeclared (e); | |
1475 | ||
1476 | /* | |
1477 | if (context_inGlobalScope ()) | |
1478 | { | |
1479 | uentry_checkParams was here! | |
1480 | } | |
1481 | */ | |
1482 | ||
1483 | if (ctype_isFunction (uentry_getType (e))) | |
1484 | { | |
1485 | clabstract_prepareFunction (e); | |
1486 | } | |
1487 | ||
1488 | DPRINTF (("Superceding... %s", uentry_unparseFull (e))); | |
1489 | e = usymtab_supEntrySrefReturn (e); | |
1490 | DPRINTF (("After superceding... %s", uentry_unparseFull (e))); | |
1491 | ||
1492 | if (uentry_isExtern (e) && !context_inGlobalScope ()) | |
1493 | { | |
1494 | voptgenerror | |
1495 | (FLG_NESTEDEXTERN, | |
1496 | message ("Declaration using extern inside function scope: %q", | |
1497 | uentry_unparse (e)), | |
1498 | g_currentloc); | |
28bf4b0b | 1499 | |
01a8227e | 1500 | uentry_setDefined (e, fileloc_getExternal ()); |
1501 | sRef_setDefined (uentry_getSref (e), fileloc_getExternal ()); | |
1502 | } | |
1503 | ||
1504 | if (uentry_isFunction (e)) | |
1505 | { | |
1506 | if (!context_inXHFile ()) | |
616915dd | 1507 | { |
01a8227e | 1508 | checkParamNames (e); |
616915dd | 1509 | } |
01a8227e | 1510 | } |
1511 | ||
1512 | if (uentry_isVar (e) && uentry_isCheckedUnknown (e)) | |
1513 | { | |
1514 | sRef sr = uentry_getSref (e); | |
616915dd | 1515 | |
01a8227e | 1516 | if (sRef_isLocalVar (sr)) |
616915dd | 1517 | { |
01a8227e | 1518 | if (context_getFlag (FLG_IMPCHECKMODINTERNALS)) |
1519 | { | |
1520 | uentry_setCheckMod (e); | |
1521 | } | |
1522 | else | |
1523 | { | |
1524 | uentry_setUnchecked (e); | |
1525 | } | |
616915dd | 1526 | } |
01a8227e | 1527 | else if (sRef_isFileStatic (sr)) |
616915dd | 1528 | { |
01a8227e | 1529 | if (context_getFlag (FLG_IMPCHECKEDSTRICTSTATICS)) |
1530 | { | |
1531 | uentry_setCheckedStrict (e); | |
1532 | } | |
1533 | else if (context_getFlag (FLG_IMPCHECKEDSTATICS)) | |
28bf4b0b | 1534 | { |
01a8227e | 1535 | uentry_setChecked (e); |
1536 | } | |
1537 | else if (context_getFlag (FLG_IMPCHECKMODSTATICS)) | |
1538 | { | |
1539 | uentry_setCheckMod (e); | |
1540 | } | |
1541 | else | |
1542 | { | |
1543 | ; | |
28bf4b0b | 1544 | } |
616915dd | 1545 | } |
01a8227e | 1546 | else /* real global */ |
616915dd | 1547 | { |
01a8227e | 1548 | llassert (sRef_isRealGlobal (sr)); |
28bf4b0b | 1549 | |
01a8227e | 1550 | if (context_getFlag (FLG_IMPCHECKEDSTRICTGLOBALS)) |
616915dd | 1551 | { |
01a8227e | 1552 | uentry_setCheckedStrict (e); |
616915dd | 1553 | } |
01a8227e | 1554 | else if (context_getFlag (FLG_IMPCHECKEDGLOBALS)) |
616915dd | 1555 | { |
01a8227e | 1556 | uentry_setChecked (e); |
616915dd | 1557 | } |
01a8227e | 1558 | else if (context_getFlag (FLG_IMPCHECKMODGLOBALS)) |
616915dd | 1559 | { |
01a8227e | 1560 | uentry_setCheckMod (e); |
1561 | } | |
1562 | else | |
1563 | { | |
1564 | ; | |
616915dd | 1565 | } |
1566 | } | |
1567 | } | |
1568 | } | |
01a8227e | 1569 | } |
1570 | ||
1571 | void processNamedDecl (idDecl t) | |
1572 | { | |
1573 | if (qtype_isUndefined (processingType)) | |
1574 | { | |
1575 | processingType = qtype_create (ctype_int); | |
1576 | t = idDecl_fixBase (t, processingType); | |
1577 | ||
1578 | voptgenerror (FLG_IMPTYPE, | |
1579 | message ("No type before declaration name (implicit int type): %q", | |
1580 | idDecl_unparse (t)), | |
1581 | g_currentloc); | |
1582 | } | |
1583 | else | |
1584 | { | |
1585 | t = idDecl_fixBase (t, processingType); | |
1586 | } | |
1587 | ||
1588 | DPRINTF (("Declare: %s", idDecl_unparse (t))); | |
1589 | ||
1590 | if (s_processingGlobals) | |
1591 | { | |
1592 | cstring id = idDecl_getName (t); | |
1593 | uentry ue = usymtab_lookupSafe (id); | |
1594 | ||
1595 | if (!uentry_isValid (ue)) | |
1596 | { | |
1597 | llerror (FLG_UNRECOG, | |
1598 | message ("Variable used in globals list is undeclared: %s", id)); | |
1599 | } | |
1600 | else | |
1601 | { | |
1602 | if (!ctype_match (uentry_getType (ue), idDecl_getCtype (t))) | |
1603 | { | |
1604 | voptgenerror | |
1605 | (FLG_INCONDEFS, | |
1606 | message ("Variable %s used in globals list declared %s, " | |
1607 | "but listed as %s", | |
1608 | id, ctype_unparse (uentry_getType (ue)), | |
1609 | ctype_unparse (idDecl_getCtype (t))), | |
1610 | g_currentloc); | |
1611 | } | |
1612 | else | |
1613 | { | |
1614 | sRef sr = sRef_copy (uentry_getSref (ue)); | |
1615 | reflectGlobalQualifiers (sr, idDecl_getQuals (t)); | |
1616 | } | |
1617 | } | |
1618 | } | |
1619 | else if (s_processingVars) | |
1620 | { | |
1621 | processVariable (t); | |
1622 | } | |
1623 | else if (s_processingTypedef) | |
616915dd | 1624 | { |
1625 | ctype ct = idDecl_getCtype (t); | |
1626 | uentry e; | |
28bf4b0b | 1627 | |
616915dd | 1628 | DPRINTF (("Processing typedef: %s", ctype_unparse (ct))); |
1629 | ||
1630 | e = uentry_makeIdDatatype (t); | |
1631 | ||
1632 | if (cstring_equal (idDecl_getName (t), context_getBoolName ())) { | |
1633 | ctype rt = ctype_realType (ct); | |
1634 | ||
1635 | if (ctype_isEnum (rt)) { | |
1636 | ; | |
1637 | } else { | |
1638 | if (!(ctype_isInt (rt) | |
1639 | || ctype_isUnknown (rt) | |
1640 | || ctype_isChar (rt))) { | |
1641 | (void) llgenerror | |
1642 | (FLG_BOOLTYPE, | |
1643 | message ("Boolean type %s defined using non-standard type %s (integral, char or enum type expected)", | |
1644 | context_getBoolName (), | |
1645 | ctype_unparse (ct)), | |
1646 | uentry_whereLast (e)); | |
1647 | } | |
1648 | ||
1649 | ct = ctype_bool; | |
1650 | uentry_setType (e, ct); | |
1651 | } | |
1652 | } | |
1653 | ||
1654 | reflectStorageClass (e); | |
1655 | checkTypeDecl (e, ct); | |
1656 | ||
1657 | e = usymtab_supReturnTypeEntry (e); | |
616915dd | 1658 | } |
1659 | else | |
1660 | { | |
1661 | llparseerror (message ("Suspect missing struct or union keyword: %q", | |
1662 | idDecl_unparse (t))); | |
1663 | } | |
1664 | ||
1665 | } | |
1666 | ||
1667 | /* | |
1668 | ** moved from grammar | |
1669 | */ | |
1670 | ||
1671 | static idDecl fixStructDecl (/*@returned@*/ idDecl d) | |
1672 | { | |
1673 | if (ctype_isVisiblySharable (idDecl_getCtype (d)) | |
1674 | && context_getFlag (FLG_STRUCTIMPONLY)) | |
1675 | { | |
1676 | if (!qualList_hasAliasQualifier (idDecl_getQuals (d))) | |
1677 | { | |
1678 | if (qualList_hasExposureQualifier (idDecl_getQuals (d))) | |
1679 | { | |
1680 | idDecl_addQual (d, qual_createDependent ()); | |
1681 | } | |
1682 | else | |
1683 | { | |
1684 | idDecl_addQual (d, qual_createImpOnly ()); | |
1685 | } | |
1686 | } | |
1687 | } | |
1688 | ||
1689 | return d; | |
1690 | } | |
1691 | ||
1692 | ctype | |
1693 | declareUnnamedStruct (/*@only@*/ uentryList f) | |
1694 | { | |
28bf4b0b | 1695 | DPRINTF (("Unnamed struct: %s", uentryList_unparse (f))); |
1696 | ||
616915dd | 1697 | if (context_maybeSet (FLG_NUMSTRUCTFIELDS)) |
1698 | { | |
1699 | int num = uentryList_size (f); | |
1700 | int max = context_getValue (FLG_NUMSTRUCTFIELDS); | |
1701 | ||
1702 | if (num > max) | |
1703 | { | |
1704 | voptgenerror | |
1705 | (FLG_NUMSTRUCTFIELDS, | |
1706 | message ("Structure declared with %d fields " | |
1707 | "(limit is set to %d)", | |
1708 | num, max), | |
1709 | g_currentloc); | |
1710 | } | |
1711 | } | |
1712 | ||
1713 | return (ctype_createUnnamedStruct (f)); | |
1714 | } | |
1715 | ||
1716 | ctype | |
1717 | declareUnnamedUnion (/*@only@*/ uentryList f) | |
1718 | { | |
288cbc5c | 1719 | DPRINTF (("Unnamed union: %s", uentryList_unparse (f))); |
1720 | ||
616915dd | 1721 | if (context_maybeSet (FLG_NUMSTRUCTFIELDS)) |
1722 | { | |
1723 | int num = uentryList_size (f); | |
1724 | int max = context_getValue (FLG_NUMSTRUCTFIELDS); | |
1725 | ||
1726 | if (num > max) | |
1727 | { | |
1728 | voptgenerror | |
1729 | (FLG_NUMSTRUCTFIELDS, | |
1730 | message ("Union declared with %d fields " | |
1731 | "(limit is set to %d)", | |
1732 | num, max), | |
1733 | g_currentloc); | |
1734 | } | |
1735 | } | |
1736 | ||
1737 | return (ctype_createUnnamedUnion (f)); | |
1738 | } | |
1739 | ||
1740 | ctype declareStruct (cstring id, /*@only@*/ uentryList f) | |
1741 | { | |
1742 | ctype ct; | |
1743 | uentry ue; | |
1744 | int num = uentryList_size (f); | |
1745 | ||
288cbc5c | 1746 | DPRINTF (("Declare struct: %s / %s [%d]", id, uentryList_unparse (f), |
1747 | uentryList_size (f))); | |
28bf4b0b | 1748 | |
616915dd | 1749 | ct = ctype_createStruct (cstring_copy (id), f); |
28bf4b0b | 1750 | |
1751 | DPRINTF (("Ctype: %s", ctype_unparse (ct))); | |
1752 | ||
616915dd | 1753 | ue = uentry_makeStructTagLoc (id, ct); |
1754 | ||
28bf4b0b | 1755 | DPRINTF (("ue: %s", uentry_unparseFull (ue))); |
1756 | ||
616915dd | 1757 | if (context_maybeSet (FLG_NUMSTRUCTFIELDS)) |
1758 | { | |
1759 | int max = context_getValue (FLG_NUMSTRUCTFIELDS); | |
1760 | ||
1761 | if (num > max) | |
1762 | { | |
1763 | voptgenerror | |
1764 | (FLG_NUMSTRUCTFIELDS, | |
1765 | message ("Structure %q declared with %d fields " | |
1766 | "(limit is set to %d)", | |
1767 | uentry_getName (ue), num, max), | |
1768 | uentry_whereLast (ue)); | |
1769 | } | |
1770 | } | |
1771 | ||
1772 | return (usymtab_supTypeEntry (ue)); | |
1773 | } | |
1774 | ||
1775 | ctype declareUnion (cstring id, uentryList f) | |
1776 | { | |
1777 | ctype ct; | |
1778 | uentry ue; | |
1779 | int num = uentryList_size (f); | |
1780 | ||
1781 | ct = ctype_createUnion (cstring_copy (id), f); | |
1782 | ue = uentry_makeUnionTagLoc (id, ct); | |
1783 | ||
1784 | if (context_maybeSet (FLG_NUMSTRUCTFIELDS)) | |
1785 | { | |
1786 | int max = context_getValue (FLG_NUMSTRUCTFIELDS); | |
1787 | ||
1788 | if (num > max) | |
1789 | { | |
1790 | voptgenerror | |
1791 | (FLG_NUMSTRUCTFIELDS, | |
1792 | message ("Union %q declared with %d fields " | |
1793 | "(limit is set to %d)", | |
1794 | uentry_getName (ue), num, max), | |
1795 | uentry_whereLast (ue)); | |
1796 | } | |
1797 | } | |
1798 | ||
1799 | return (usymtab_supTypeEntry (ue)); | |
1800 | } | |
1801 | ||
1802 | ctype handleStruct (/*@only@*/ cstring id) | |
1803 | { | |
1804 | if (usymtab_existsStructTag (id)) | |
1805 | { | |
1806 | ctype ct = uentry_getAbstractType (usymtab_lookupStructTag (id)); | |
1807 | ||
1808 | cstring_free (id); | |
1809 | return ct; | |
1810 | } | |
1811 | else | |
1812 | { | |
1813 | return (ctype_createForwardStruct (id)); | |
1814 | } | |
1815 | } | |
1816 | ||
1817 | ctype handleUnion (/*@only@*/ cstring id) | |
1818 | { | |
1819 | if (usymtab_existsUnionTag (id)) | |
1820 | { | |
1821 | ctype ret = uentry_getAbstractType (usymtab_lookupUnionTag (id)); | |
1822 | cstring_free (id); | |
1823 | return (ret); | |
1824 | } | |
1825 | else | |
1826 | { | |
1827 | return (ctype_createForwardUnion (id)); | |
1828 | } | |
1829 | } | |
1830 | ||
1831 | ctype | |
1832 | handleEnum (cstring id) | |
1833 | { | |
1834 | if (usymtab_existsEnumTag (id)) | |
1835 | { | |
1836 | ctype ret = uentry_getAbstractType (usymtab_lookupEnumTag (id)); | |
1837 | cstring_free (id); | |
1838 | return ret; | |
1839 | } | |
1840 | else | |
1841 | { | |
140c27a8 | 1842 | return (ctype_createForwardEnum (id)); |
616915dd | 1843 | } |
1844 | } | |
1845 | ||
1846 | bool processingIterVars (void) | |
1847 | { | |
01a8227e | 1848 | return s_processingIterVars; |
616915dd | 1849 | } |
1850 | ||
1851 | uentry getCurrentIter (void) | |
1852 | { | |
1853 | return currentIter; | |
1854 | } | |
1855 | ||
1856 | static bool flipOldStyle = FALSE; | |
1857 | static bool flipNewStyle = TRUE; | |
1858 | ||
1859 | void setFlipOldStyle () { flipOldStyle = TRUE; } | |
1860 | bool isFlipOldStyle () { return flipOldStyle; } | |
1861 | bool isNewStyle () { return flipNewStyle; } | |
1862 | void setNewStyle () { flipNewStyle = TRUE; } | |
1863 | ||
1864 | /*@dependent@*/ uentryList handleParamIdList (/*@dependent@*/ uentryList params) | |
1865 | { | |
1866 | int paramno = 0; | |
1867 | ||
1868 | /* | |
1869 | ** this is a really YUCKY hack to handle old style | |
1870 | ** declarations. | |
1871 | */ | |
1872 | ||
1873 | voptgenerror (FLG_OLDSTYLE, | |
1874 | cstring_makeLiteral ("Old style function declaration"), | |
1875 | g_currentloc); | |
1876 | ||
7ebcc5bb | 1877 | DPRINTF (("Handle old style params: %s", uentryList_unparseFull (params))); |
1878 | ||
616915dd | 1879 | uentryList_elements (params, current) |
1880 | { | |
1881 | uentry_setParam (current); | |
16c024b5 | 1882 | uentry_setSref (current, sRef_makeParam |
1883 | (paramno, ctype_unknown, | |
1884 | stateInfo_makeLoc (uentry_whereLast (current), SA_DECLARED))); | |
616915dd | 1885 | paramno++; |
1886 | } end_uentryList_elements; | |
1887 | ||
1888 | setGenericParamList (params); | |
16c024b5 | 1889 | cscannerHelp_setExpectingTypeName (); |
616915dd | 1890 | |
1891 | return params; | |
1892 | } | |
1893 | ||
1894 | /*@dependent@*/ uentryList handleParamTypeList (/*@returned@*/ uentryList params) | |
1895 | { | |
1896 | if (flipOldStyle) | |
1897 | { | |
1898 | uentryList_fixMissingNames (params); | |
1899 | ||
1900 | voptgenerror (FLG_OLDSTYLE, | |
1901 | cstring_makeLiteral ("Old style function declaration."), | |
1902 | g_currentloc); | |
1903 | ||
1904 | setGenericParamList (params); | |
1905 | flipOldStyle = FALSE; | |
16c024b5 | 1906 | cscannerHelp_setExpectingTypeName (); |
616915dd | 1907 | } |
1908 | ||
1909 | return (params); | |
1910 | } | |
1911 | ||
1912 | void | |
1913 | doVaDcl () | |
1914 | { | |
1915 | ctype c = ctype_unknown; | |
1916 | cstring id = cstring_makeLiteral ("va_alist"); | |
1917 | uentry e; | |
1918 | ||
01a8227e | 1919 | if (s_processingParams) |
616915dd | 1920 | { |
1921 | int i = uentryList_lookupRealName (saveParamList, id); | |
1922 | ||
1923 | if (i >= 0) | |
1924 | { | |
6970c11b | 1925 | fileloc loc = context_getSaveLocation (); |
16c024b5 | 1926 | e = uentry_makeVariableSrefParam |
1927 | (id, c, loc, | |
1928 | sRef_makeParam (i, c, stateInfo_makeLoc (loc, SA_DECLARED))); | |
616915dd | 1929 | } |
1930 | else | |
1931 | { | |
1932 | e = uentry_undefined; /* suppress gcc message */ | |
1933 | llfatalerrorLoc (cstring_makeLiteral ("va_dcl used without va_alist")); | |
1934 | } | |
1935 | } | |
1936 | else | |
1937 | { | |
1938 | llerror (FLG_SYNTAX, cstring_makeLiteral ("va_dcl used outside of function declaration")); | |
1939 | e = uentry_makeVariableLoc (id, c); | |
1940 | } | |
1941 | ||
1942 | cstring_free (id); | |
1943 | uentry_setUsed (e, g_currentloc); | |
1944 | usymtab_supEntrySref (e); | |
1945 | } | |
1946 | ||
28bf4b0b | 1947 | /*@exposed@*/ sRef modListPointer (/*@exposed@*/ sRef s) |
616915dd | 1948 | { |
1949 | ctype ct = sRef_getType (s); | |
1950 | ctype rt = ctype_realType (ct); | |
1951 | ||
1952 | if (ctype_isAP (rt)) | |
1953 | { | |
1954 | if (context_inHeader () && ctype_isAbstract (ct)) | |
1955 | { | |
1956 | voptgenerror | |
1957 | (FLG_ABSTRACT, | |
1958 | message | |
1959 | ("Modifies clause in header file dereferences abstract " | |
1960 | "type %s (interface modifies clause should not depend " | |
1961 | "on or expose type representation): %q", | |
1962 | ctype_unparse (ct), | |
1963 | sRef_unparse (s)), | |
1964 | g_currentloc); | |
1965 | } | |
1966 | ||
1967 | return (sRef_constructPointer (s)); | |
1968 | } | |
1969 | else | |
1970 | { | |
1971 | if (ctype_isKnown (rt)) | |
1972 | { | |
1973 | voptgenerror | |
1974 | (FLG_TYPE, | |
1975 | message ("Implementation modifies clause dereferences non-pointer (type %s): %q", | |
1976 | ctype_unparse (rt), | |
1977 | sRef_unparse (s)), | |
1978 | g_currentloc); | |
1979 | } | |
1980 | ||
1981 | return s; | |
1982 | } | |
1983 | } | |
1984 | ||
1985 | /*@exposed@*/ sRef modListFieldAccess (sRef s, cstring f) | |
1986 | { | |
1987 | ctype ct = sRef_getType (s); | |
1988 | ctype rt = ctype_realType (ct); | |
1989 | ||
1990 | if (ctype_isStructorUnion (rt)) | |
1991 | { | |
1992 | uentry tf = uentryList_lookupField (ctype_getFields (rt), f); | |
1993 | ||
1994 | if (uentry_isUndefined (tf)) | |
1995 | { | |
1996 | voptgenerror (FLG_TYPE, | |
1997 | message ("Modifies list accesses non-existent " | |
1998 | "field %s of %t: %q", f, ct, | |
1999 | sRef_unparse (s)), | |
2000 | g_currentloc); | |
2001 | ||
2002 | cstring_free (f); | |
2003 | return sRef_undefined; | |
2004 | } | |
2005 | else | |
2006 | { | |
2007 | if (ctype_isAbstract (ct) && context_inHeader ()) | |
2008 | { | |
2009 | voptgenerror | |
2010 | (FLG_ABSTRACT, | |
2011 | message | |
2012 | ("Modifies clause in header file accesses abstract " | |
2013 | "type %s (interface modifies clause should not depend " | |
2014 | "on or expose type representation): %q", | |
2015 | ctype_unparse (ct), | |
2016 | sRef_unparse (s)), | |
2017 | g_currentloc); | |
2018 | } | |
2019 | } | |
2020 | ||
2021 | cstring_markOwned (f); | |
2022 | return (sRef_makeField (s, f)); | |
2023 | } | |
2024 | else | |
2025 | { | |
2026 | voptgenerror | |
2027 | (FLG_TYPE, | |
2028 | message ("Modifies clause dereferences non-pointer (type %s): %q", | |
2029 | ctype_unparse (rt), | |
2030 | sRef_unparse (s)), | |
2031 | g_currentloc); | |
2032 | ||
2033 | cstring_free (f); | |
2034 | return s; | |
2035 | } | |
2036 | } | |
2037 | ||
28bf4b0b | 2038 | /*@dependent@*/ sRef clabstract_unrecognizedGlobal (cstring s) |
616915dd | 2039 | { |
2040 | if (cstring_equalLit (s, "nothing")) | |
2041 | { | |
2042 | return sRef_makeNothing (); | |
2043 | } | |
2044 | else if (cstring_equalLit (s, "internalState")) | |
2045 | { | |
2046 | return sRef_makeInternalState (); | |
2047 | } | |
2048 | else if (cstring_equalLit (s, "fileSystem") | |
2049 | || cstring_equalLit (s, "systemState")) | |
2050 | { | |
2051 | return sRef_makeSystemState (); | |
2052 | } | |
2053 | else | |
2054 | { | |
2055 | voptgenerror | |
2056 | (FLG_UNRECOG, | |
2057 | message ("Unrecognized identifier in globals list: %s", s), | |
2058 | g_currentloc); | |
2059 | ||
2060 | return sRef_undefined; | |
2061 | } | |
2062 | } | |
2063 | ||
2064 | /*@exposed@*/ sRef modListArrowAccess (sRef s, cstring f) | |
2065 | { | |
2066 | ctype ct = sRef_getType (s); | |
2067 | ctype rt = ctype_realType (ct); | |
2068 | ||
2069 | if (ctype_isRealPointer (rt)) | |
2070 | { | |
2071 | ctype b = ctype_baseArrayPtr (rt); | |
2072 | ctype rb = ctype_realType (b); | |
2073 | ||
2074 | if (ctype_isStructorUnion (rb)) | |
2075 | { | |
2076 | uentry tf = uentryList_lookupField (ctype_getFields (rb), f); | |
2077 | ||
2078 | if (uentry_isUndefined (tf)) | |
2079 | { | |
2080 | voptgenerror (FLG_TYPE, | |
2081 | message ("Modifies list arrow accesses non-existent " | |
2082 | "field %s of %t: %q", f, b, | |
2083 | sRef_unparse (s)), | |
2084 | g_currentloc); | |
2085 | ||
2086 | cstring_free (f); | |
2087 | return sRef_undefined; | |
2088 | } | |
2089 | else | |
2090 | { | |
2091 | if (context_inHeader ()) | |
2092 | { | |
2093 | if (ctype_isAbstract (b)) | |
2094 | { | |
2095 | voptgenerror | |
2096 | (FLG_ABSTRACT, | |
2097 | message | |
2098 | ("Modifies clause in header file arrow accesses abstract " | |
2099 | "type %s (interface modifies clause should not depend " | |
2100 | "on or expose type representation): %q", | |
2101 | ctype_unparse (b), | |
2102 | sRef_unparse (s)), | |
2103 | g_currentloc); | |
2104 | } | |
2105 | } | |
2106 | else | |
2107 | { | |
146e25eb | 2108 | if (ctype_isAbstract (rt)) |
616915dd | 2109 | { |
2110 | voptgenerror | |
2111 | (FLG_ABSTRACT, | |
2112 | message | |
146e25eb | 2113 | ("Modifies clause arrow accesses inaccessible abstract " |
616915dd | 2114 | "type %s (interface modifies clause should not depend " |
2115 | "on or expose type representation): %q", | |
146e25eb | 2116 | ctype_unparse (rt), |
616915dd | 2117 | sRef_unparse (s)), |
2118 | g_currentloc); | |
2119 | } | |
2120 | } | |
2121 | } | |
2122 | ||
2123 | cstring_markOwned (f); | |
2124 | return (sRef_makeArrow (s, f)); | |
2125 | } | |
2126 | else | |
2127 | { | |
2128 | voptgenerror | |
2129 | (FLG_TYPE, | |
2130 | message ("Modifies clause arrow accesses pointer to " | |
2131 | "non-structure (type %s): %q", | |
2132 | ctype_unparse (rt), | |
2133 | sRef_unparse (s)), | |
2134 | g_currentloc); | |
2135 | } | |
2136 | } | |
2137 | else | |
2138 | { | |
2139 | voptgenerror | |
2140 | (FLG_TYPE, | |
2141 | message ("Modifies clause arrow accesses non-pointer (type %s): %q", | |
2142 | ctype_unparse (rt), | |
2143 | sRef_unparse (s)), | |
2144 | g_currentloc); | |
2145 | } | |
2146 | ||
2147 | cstring_free (f); | |
2148 | return s; | |
2149 | } | |
2150 | ||
28bf4b0b | 2151 | sRef checkStateClausesId (uentry ue) |
616915dd | 2152 | { |
2153 | cstring s = uentry_rawName (ue); | |
2154 | ||
28bf4b0b | 2155 | if (sRef_isFileOrGlobalScope (uentry_getSref (ue))) |
616915dd | 2156 | { |
2157 | voptgenerror | |
28bf4b0b | 2158 | (FLG_COMMENTERROR, |
1b8ae690 | 2159 | message ("Global variable %s used state clause. (Global variables " |
a07995d9 | 2160 | "are not recognized in state clauses. If they are present " |
2161 | "they are ignored. " | |
2162 | " If there is " | |
616915dd | 2163 | "sufficient interest in support for this, it may be " |
2164 | "added to a future release. Send mail to " | |
155af98d | 2165 | "info@splint.org.)", |
616915dd | 2166 | s), |
2167 | g_currentloc); | |
2168 | ||
2169 | return sRef_undefined; | |
2170 | } | |
2171 | else | |
2172 | { | |
2173 | if (cstring_equalLit (s, "result")) | |
2174 | { | |
2175 | if (optgenerror | |
2176 | (FLG_SYNTAX, | |
2177 | message ("Special clause list uses %s which is a variable and has special " | |
2178 | "meaning in a modifies list. (Special meaning assumed.)", s), | |
2179 | g_currentloc)) | |
2180 | { | |
2181 | uentry_showWhereDeclared (ue); | |
2182 | } | |
2183 | } | |
2184 | ||
2185 | return uentry_getSref (ue); | |
2186 | } | |
2187 | } | |
9280addf | 2188 | /*drl:1/19/2001 |
2189 | oops to 1/8/2000 | |
2190 | date is wronge .. | |
2191 | don;t know what the real date is... | |
2192 | ||
2193 | */ | |
616915dd | 2194 | |
2195 | /*drl | |
2196 | added 1/8/2000 | |
2197 | based on checkSpecClausesId | |
2198 | called by grammar | |
2199 | */ | |
b37cf05e | 2200 | |
616915dd | 2201 | sRef checkbufferConstraintClausesId (uentry ue) |
2202 | { | |
5ca29538 | 2203 | sRef sr; |
616915dd | 2204 | cstring s = uentry_rawName (ue); |
08eb3d0e | 2205 | |
616915dd | 2206 | if (cstring_equalLit (s, "result")) |
2207 | { | |
2208 | if (optgenerror | |
2209 | (FLG_SYNTAX, | |
08eb3d0e | 2210 | message ("Function clause list uses %s which is a variable and has special " |
616915dd | 2211 | "meaning in a modifies list. (Special meaning assumed.)", s), |
2212 | g_currentloc)) | |
2213 | { | |
2214 | uentry_showWhereDeclared (ue); | |
2215 | } | |
2216 | } | |
2217 | ||
5ca29538 | 2218 | sr = uentry_getSref (ue); |
2219 | ||
517a2db3 | 2220 | if (sRef_isInvalid (sr)) |
5ca29538 | 2221 | { |
517a2db3 | 2222 | llfatalerrorLoc (cstring_makeLiteral ("Macro defined constants can not be used in function " |
2223 | "constraints unless they are specifed with the constant " | |
2224 | "annotation. To use a macro defined constant include an " | |
2225 | "annotation of the form /*@constant <type> <name>=<value>@*/ " | |
2226 | "somewhere before the function constraint. This restriction " | |
2227 | "may be removed in future releases.")); | |
5ca29538 | 2228 | } |
b2a40ced | 2229 | |
517a2db3 | 2230 | /* saveCopy to used to mitigate danger of accessing freed memory*/ |
b2a40ced | 2231 | return sRef_saveCopy (sr); |
616915dd | 2232 | } |
2233 | ||
2234 | void checkModifiesId (uentry ue) | |
2235 | { | |
2236 | cstring s = uentry_rawName (ue); | |
2237 | ||
2238 | if (cstring_equalLit (s, "nothing") | |
2239 | || cstring_equalLit (s, "internalState") | |
2240 | || cstring_equalLit (s, "systemState") | |
2241 | || (cstring_equalLit (s, "fileSystem"))) | |
2242 | { | |
2243 | if (optgenerror | |
2244 | (FLG_SYNTAX, | |
2245 | message ("Modifies list uses %s which is a variable and has special " | |
2246 | "meaning in a modifies list. (Special meaning assumed.)", s), | |
2247 | g_currentloc)) | |
2248 | { | |
2249 | uentry_showWhereDeclared (ue); | |
2250 | } | |
2251 | } | |
2252 | } | |
2253 | ||
2254 | /*@exposed@*/ sRef fixModifiesId (cstring s) | |
2255 | { | |
2256 | sRef ret; | |
2257 | cstring pname = makeParam (s); | |
2258 | uentry ue = usymtab_lookupSafe (pname); | |
2259 | ||
2260 | cstring_free (pname); | |
2261 | ||
2262 | if (cstring_equalLit (s, "nothing")) | |
2263 | { | |
2264 | ret = sRef_makeNothing (); | |
2265 | } | |
2266 | else if (cstring_equalLit (s, "internalState")) | |
2267 | { | |
2268 | ret = sRef_makeInternalState (); | |
2269 | } | |
2270 | else if (cstring_equalLit (s, "fileSystem") | |
2271 | || cstring_equalLit (s, "systemState")) | |
2272 | { | |
2273 | ret = sRef_makeSystemState (); | |
2274 | } | |
2275 | else | |
2276 | { | |
2277 | ret = sRef_undefined; | |
2278 | } | |
2279 | ||
2280 | if (sRef_isValid (ret)) | |
2281 | { | |
2282 | if (uentry_isValid (ue)) | |
2283 | { | |
2284 | voptgenerror | |
2285 | (FLG_SYNTAX, | |
2286 | message ("Modifies list uses %s which is a parameter and has special " | |
2287 | "meaning in a modifies list. (Special meaning assumed.)", s), | |
2288 | g_currentloc); | |
2289 | } | |
2290 | } | |
2291 | else | |
2292 | { | |
2293 | if (uentry_isValid (ue)) | |
2294 | { | |
2295 | ret = uentry_getSref (ue); | |
2296 | } | |
2297 | else | |
2298 | { | |
abd7f895 | 2299 | fileloc loc = fileloc_decColumn (g_currentloc, size_toInt (cstring_length (s))); |
616915dd | 2300 | ret = sRef_undefined; |
2301 | ||
2302 | voptgenerror | |
2303 | (FLG_UNRECOG, | |
2304 | message ("Unrecognized identifier in modifies comment: %s", s), | |
2305 | loc); | |
2306 | ||
2307 | fileloc_free (loc); | |
2308 | } | |
2309 | } | |
2310 | ||
2311 | return ret; | |
2312 | } | |
2313 | ||
28bf4b0b | 2314 | sRef fixStateClausesId (cstring s) |
616915dd | 2315 | { |
2316 | sRef ret; | |
2317 | cstring pname = makeParam (s); | |
2318 | uentry ue = usymtab_lookupSafe (pname); | |
2319 | ||
2320 | cstring_free (pname); | |
2321 | ||
2322 | if (cstring_equalLit (s, "result")) | |
2323 | { | |
b072092f | 2324 | ret = sRef_makeResult (ctype_unknown); |
616915dd | 2325 | } |
2326 | else | |
2327 | { | |
2328 | ret = sRef_undefined; | |
2329 | } | |
2330 | ||
2331 | if (sRef_isValid (ret)) | |
2332 | { | |
2333 | if (uentry_isValid (ue)) | |
2334 | { | |
2335 | voptgenerror | |
2336 | (FLG_SYNTAX, | |
d9a28762 | 2337 | message ("Function clause uses %s which is a parameter and has special " |
2338 | "meaning in a function clause. (Special meaning assumed.)", s), | |
616915dd | 2339 | g_currentloc); |
2340 | } | |
2341 | } | |
2342 | else | |
2343 | { | |
2344 | if (uentry_isValid (ue)) | |
2345 | { | |
2346 | ret = uentry_getSref (ue); | |
2347 | ||
28bf4b0b | 2348 | if (sRef_isFileOrGlobalScope (ret)) |
616915dd | 2349 | { |
2350 | voptgenerror | |
2351 | (FLG_SYNTAX, | |
d9a28762 | 2352 | message ("Global variable %s used in function clause. (Global variables " |
2353 | "are not recognized in function clauses. If there is " | |
616915dd | 2354 | "sufficient interest in support for this, it may be " |
2355 | "added to a future release. Send mail to " | |
155af98d | 2356 | "info@splint.org.)", |
616915dd | 2357 | s), |
2358 | g_currentloc); | |
2359 | ||
2360 | ret = sRef_undefined; | |
2361 | } | |
2362 | } | |
2363 | else | |
2364 | { | |
86d93ed3 | 2365 | |
b2a40ced | 2366 | /* drl This is the code for structure invariants |
2367 | ||
2368 | It is no yet stable enough to be included in a Splint release. | |
2369 | */ | |
2370 | ||
86d93ed3 | 2371 | /*check that we're in a structure */ |
b2a40ced | 2372 | #if 0 |
4dd72714 | 2373 | /*@unused@*/ uentryList ueL; |
86d93ed3 | 2374 | /*@unused@*/ uentry ue2; |
4dd72714 | 2375 | /*@unused@*/ ctype ct;\r |
b2a40ced | 2376 | #endif |
abd7f895 | 2377 | fileloc loc = fileloc_decColumn (g_currentloc, size_toInt (cstring_length (s))); |
616915dd | 2378 | ret = sRef_undefined; |
4dd72714 | 2379 | # if 0 |
b2a40ced | 2380 | |
86d93ed3 | 2381 | ct = context_getLastStruct ( ct ); |
2382 | ||
2383 | llassert( ctype_isStruct(ct) ); | |
2384 | ||
2385 | ueL = ctype_getFields (ct); | |
2386 | ||
2387 | ue2 = uentryList_lookupField (ueL, s); | |
2388 | ||
2389 | if (!uentry_isUndefined(ue2) ) | |
2390 | { | |
2391 | ret = uentry_getSref(ue2); | |
2392 | ||
2393 | DPRINTF(( | |
2394 | message("Got field in structure in the annotation constraint: %s (or sref: %s)", s, sRef_unparse(ret) ) | |
2395 | )); | |
2396 | ||
2397 | return ret; | |
2398 | } | |
b2a40ced | 2399 | |
2400 | #endif | |
4dd72714 | 2401 | |
616915dd | 2402 | voptgenerror |
2403 | (FLG_UNRECOG, | |
d9a28762 | 2404 | message ("Unrecognized identifier in function clause: %s", s), |
616915dd | 2405 | loc); |
2406 | ||
2407 | fileloc_free (loc); | |
2408 | } | |
2409 | } | |
2410 | ||
2411 | return ret; | |
2412 | } | |
2413 | ||
28bf4b0b | 2414 | sRef modListArrayFetch (/*@exposed@*/ sRef s, /*@unused@*/ sRef mexp) |
616915dd | 2415 | { |
2416 | ctype ct = sRef_getType (s); | |
2417 | ctype rt = ctype_realType (ct); | |
2418 | ||
2419 | if (ctype_isAP (rt)) | |
2420 | { | |
2421 | if (context_inHeader () && ctype_isAbstract (ct)) | |
2422 | { | |
2423 | voptgenerror | |
2424 | (FLG_ABSTRACT, | |
2425 | message | |
2426 | ("Modifies clause in header file indexes abstract " | |
2427 | "type %s (interface modifies clause should not depend " | |
2428 | "on or expose type representation): %q", | |
2429 | ctype_unparse (ct), | |
2430 | sRef_unparse (s)), | |
2431 | g_currentloc); | |
2432 | } | |
2433 | ||
2434 | return (sRef_makeAnyArrayFetch (s)); | |
2435 | } | |
2436 | else | |
2437 | { | |
2438 | voptgenerror | |
2439 | (FLG_TYPE, | |
2440 | message | |
2441 | ("Implementation modifies clause uses array fetch on non-array (type %s): %q", | |
2442 | ctype_unparse (ct), sRef_unparse (s)), | |
2443 | g_currentloc); | |
2444 | return s; | |
2445 | } | |
2446 | } | |
2447 | ||
28bf4b0b | 2448 | static void clabstract_prepareFunction (uentry e) |
2449 | { | |
2450 | uentry_checkParams (e); | |
2451 | DPRINTF (("After prepare: %s", uentry_unparseFull (e))); | |
2452 | } | |
2453 | ||
2454 | sRef clabstract_checkGlobal (exprNode e) | |
2455 | { | |
2456 | sRef s; | |
2457 | llassert (exprNode_isInitializer (e)); | |
2458 | ||
2459 | s = exprNode_getSref (e); | |
2460 | DPRINTF (("Initializer: %s -> %s", exprNode_unparse (e), sRef_unparse (s))); | |
2461 | ||
2462 | exprNode_free (e); | |
2463 | return sRef_copy (s); | |
2464 | } |