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616915dd | 1 | /* |
2 | ** LCLint - annotation-assisted static program checker | |
28bf4b0b | 3 | ** Copyright (C) 1994-2001 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 | ** | |
20 | ** For information on lclint: lclint-request@cs.virginia.edu | |
21 | ** To report a bug: lclint-bug@cs.virginia.edu | |
22 | ** For more information: http://lclint.cs.virginia.edu | |
23 | */ | |
24 | /* | |
25 | ** clabstract.c | |
26 | ** | |
27 | ** ASTs for C grammar | |
28 | ** | |
29 | */ | |
30 | ||
31 | # include "lclintMacros.nf" | |
32 | # include "llbasic.h" | |
33 | # include "cgrammar.h" | |
34 | ||
35 | # ifndef NOLCL | |
36 | # include "usymtab_interface.h" | |
37 | # endif | |
38 | ||
39 | # include "structNames.h" | |
40 | # include "nameChecks.h" | |
41 | ||
42 | # ifdef SANITIZER | |
43 | # include "sgrammar_tokens.h" | |
44 | # else | |
45 | # include "cgrammar_tokens.h" | |
46 | # endif | |
47 | ||
48 | /* | |
49 | ** Lots of variables are needed because of interactions with the | |
50 | ** parser. This is easier than restructuring the grammar so the | |
51 | ** right values are available in the right place. | |
52 | */ | |
53 | ||
54 | /*drl*/ | |
dc92450f | 55 | /*@only@*/ static constraintList fcnConstraints = NULL; |
616915dd | 56 | |
616915dd | 57 | /*end drl*/ |
58 | ||
470b7798 | 59 | /*drl */ |
2934b455 | 60 | static /*@only@*/ constraintList implicitFcnConstraints = NULL; |
470b7798 | 61 | |
62 | ||
616915dd | 63 | //static constraintList fcnPreConditions = NULL; |
64 | ||
28bf4b0b | 65 | static void clabstract_prepareFunction (uentry p_e) /*@modifies p_e@*/ ; |
616915dd | 66 | static bool fcnNoGlobals = FALSE; |
67 | static bool ProcessingVars = FALSE; | |
68 | static bool ProcessingParams = FALSE; | |
69 | static bool ProcessingGlobals = FALSE; | |
70 | static bool ProcessingTypedef = FALSE; | |
71 | static bool ProcessingIterVars = FALSE; | |
72 | static /*@only@*/ qtype processingType = qtype_undefined; | |
73 | static uentry currentIter = uentry_undefined; | |
616915dd | 74 | static /*@dependent@*/ uentryList saveParamList; /* for old style functions */ |
75 | static /*@owned@*/ uentry saveFunction = uentry_undefined; | |
76 | static int saveIterParamNo; | |
77 | static idDecl fixStructDecl (/*@returned@*/ idDecl p_d); | |
78 | static void checkTypeDecl (uentry p_e, ctype p_rep); | |
79 | static /*@dependent@*/ fileloc saveStoreLoc = fileloc_undefined; | |
80 | static storageClassCode storageClass = SCNONE; | |
81 | static void declareEnumList (/*@temp@*/ enumNameList p_el, ctype p_c, fileloc p_loc); | |
82 | static void resetGlobals (void); | |
28bf4b0b | 83 | static /*@null@*/ qual specialFunctionCode; |
616915dd | 84 | static bool argsUsed = FALSE; |
85 | ||
28bf4b0b | 86 | extern void clabstract_initMod () |
87 | { | |
88 | specialFunctionCode = qual_createUnknown (); | |
89 | DPRINTF (("Initialized: %s", qual_unparse (specialFunctionCode))); | |
90 | } | |
91 | ||
616915dd | 92 | static bool hasSpecialCode (void) |
93 | { | |
28bf4b0b | 94 | return (!qual_isUnknown (specialFunctionCode)); |
616915dd | 95 | } |
96 | ||
97 | extern void setArgsUsed (void) | |
98 | { | |
99 | if (argsUsed) | |
100 | { | |
101 | voptgenerror | |
102 | (FLG_SYNTAX, | |
103 | cstring_makeLiteral ("Multiple ARGSUSED comments for one function"), | |
104 | g_currentloc); | |
105 | } | |
106 | ||
107 | argsUsed = TRUE; | |
108 | } | |
109 | ||
110 | static void reflectArgsUsed (uentry ue) | |
111 | { | |
112 | if (argsUsed) | |
113 | { | |
114 | if (uentry_isFunction (ue)) | |
115 | { | |
116 | uentryList params = uentry_getParams (ue); | |
117 | ||
118 | uentryList_elements (params, el) | |
119 | { | |
120 | uentry_setUsed (el, fileloc_undefined); | |
121 | } end_uentryList_elements ; | |
122 | } | |
123 | ||
124 | argsUsed = FALSE; | |
125 | } | |
126 | } | |
127 | ||
128 | extern void setSpecialFunction (qual qu) | |
129 | { | |
28bf4b0b | 130 | if (!qual_isUnknown (specialFunctionCode)) |
616915dd | 131 | { |
132 | voptgenerror (FLG_SYNTAX, | |
133 | message ("Multiple special function codes: %s, %s " | |
134 | "(first code is ignored)", | |
135 | qual_unparse (specialFunctionCode), | |
136 | qual_unparse (qu)), | |
137 | g_currentloc); | |
138 | } | |
139 | ||
140 | specialFunctionCode = qu; | |
141 | } | |
142 | ||
143 | static void reflectSpecialCode (uentry ue) | |
144 | { | |
28bf4b0b | 145 | if (qual_isUnknown (specialFunctionCode)) { |
146 | ; | |
147 | } else if (qual_isPrintfLike (specialFunctionCode)) { | |
148 | uentry_setPrintfLike (ue); | |
149 | } else if (qual_isScanfLike (specialFunctionCode)) { | |
150 | uentry_setScanfLike (ue); | |
151 | } else if (qual_isMessageLike (specialFunctionCode)) { | |
152 | uentry_setMessageLike (ue); | |
153 | } else { | |
154 | BADBRANCH; | |
155 | } | |
616915dd | 156 | |
28bf4b0b | 157 | specialFunctionCode = qual_createUnknown (); |
616915dd | 158 | } |
159 | ||
160 | static void resetStorageClass (void) | |
161 | { | |
162 | qtype_free (processingType); | |
163 | processingType = qtype_undefined; | |
164 | storageClass = SCNONE; | |
165 | } | |
166 | ||
616915dd | 167 | static void reflectStorageClass (uentry u) |
168 | { | |
169 | if (storageClass == SCSTATIC) | |
170 | { | |
171 | uentry_setStatic (u); | |
172 | } | |
173 | else if (storageClass == SCEXTERN) | |
174 | { | |
175 | uentry_setExtern (u); | |
176 | } | |
177 | else | |
178 | { | |
179 | ; /* no storage class */ | |
180 | } | |
181 | ||
182 | } | |
183 | ||
184 | void storeLoc () | |
185 | { | |
186 | saveStoreLoc = g_currentloc; | |
187 | } | |
188 | ||
189 | void setFunctionNoGlobals (void) | |
190 | { | |
616915dd | 191 | fcnNoGlobals = TRUE; |
192 | } | |
193 | ||
616915dd | 194 | static void reflectGlobalQualifiers (sRef sr, qualList quals) |
195 | { | |
28bf4b0b | 196 | DPRINTF (("Reflect global qualifiers: %s / %s", |
197 | sRef_unparseFull (sr), qualList_unparse (quals))); | |
198 | ||
616915dd | 199 | qualList_elements (quals, qel) |
200 | { | |
201 | if (qual_isGlobalQual (qel)) /* undef, killed */ | |
202 | { | |
203 | sstate oldstate = sRef_getDefState (sr); | |
204 | sstate defstate = sstate_fromQual (qel); | |
205 | ||
206 | if ((oldstate == SS_UNDEFGLOB && defstate == SS_KILLED) | |
207 | || (oldstate == SS_KILLED && defstate == SS_UNDEFGLOB)) | |
208 | { | |
209 | defstate = SS_UNDEFKILLED; | |
210 | } | |
211 | else | |
212 | { | |
213 | ; /* any errors? */ | |
214 | } | |
215 | ||
216 | sRef_setDefState (sr, defstate, fileloc_undefined); | |
28bf4b0b | 217 | DPRINTF (("State: %s", sRef_unparseFull (sr))); |
616915dd | 218 | } |
219 | else if (qual_isAllocQual (qel)) /* out, partial, reldef, etc. */ | |
220 | { | |
221 | ctype realType = sRef_getType (sr); | |
222 | sstate defstate = sstate_fromQual (qel); | |
223 | ||
224 | if (qual_isRelDef (qel)) | |
225 | { | |
226 | ; /* okay anywhere */ | |
227 | } | |
228 | else | |
229 | { | |
230 | if (!ctype_isAP (realType) | |
231 | && !ctype_isSU (realType) | |
232 | && !ctype_isUnknown (realType) | |
233 | && !ctype_isAbstract (sRef_getType (sr))) | |
234 | { | |
235 | llerror | |
236 | (FLG_SYNTAX, | |
237 | message ("Qualifier %s used on non-pointer or struct: %q", | |
238 | qual_unparse (qel), sRef_unparse (sr))); | |
239 | ||
240 | } | |
241 | } | |
242 | ||
243 | sRef_setDefState (sr, defstate, fileloc_undefined); | |
244 | } | |
245 | else if (qual_isNull (qel)) | |
246 | { | |
247 | sRef_setNullState (sr, NS_POSNULL, fileloc_undefined); | |
248 | } | |
249 | else if (qual_isRelNull (qel)) | |
250 | { | |
251 | sRef_setNullState (sr, NS_RELNULL, fileloc_undefined); | |
252 | } | |
253 | else if (qual_isNotNull (qel)) | |
254 | { | |
255 | sRef_setNullState (sr, NS_MNOTNULL, fileloc_undefined); | |
256 | } | |
257 | else | |
258 | { | |
259 | if (qual_isCQual (qel)) | |
260 | { | |
261 | ; /* okay */ | |
262 | } | |
263 | else | |
264 | { | |
265 | llerror (FLG_SYNTAX, | |
266 | message ("Qualifier %s cannot be used in a globals list", | |
267 | qual_unparse (qel))); | |
268 | } | |
269 | } | |
270 | } end_qualList_elements; | |
271 | } | |
272 | ||
28bf4b0b | 273 | sRef clabstract_createGlobal (sRef sr, qualList quals) |
616915dd | 274 | { |
28bf4b0b | 275 | sRef res; |
276 | ||
616915dd | 277 | if (sRef_isValid (sr)) |
278 | { | |
28bf4b0b | 279 | res = sRef_copy (sr); |
280 | DPRINTF (("Reflecting quals: %s / %s", sRef_unparse (sr), qualList_unparse (quals))); | |
281 | reflectGlobalQualifiers (res, quals); | |
282 | DPRINTF (("==> %s", sRef_unparseFull (res))); | |
616915dd | 283 | } |
28bf4b0b | 284 | else |
285 | { | |
286 | res = sRef_undefined; | |
287 | } | |
288 | ||
289 | qualList_free (quals); | |
290 | return res; | |
616915dd | 291 | } |
292 | ||
293 | extern void declareCIter (cstring name, /*@owned@*/ uentryList params) | |
294 | { | |
295 | uentry ue; | |
296 | ||
297 | ue = uentry_makeIter (name, | |
298 | ctype_makeFunction (ctype_void, params), | |
299 | fileloc_copy (g_currentloc)); | |
300 | ||
301 | usymtab_supEntry (uentry_makeEndIter (name, fileloc_copy (g_currentloc))); | |
616915dd | 302 | ue = usymtab_supGlobalEntryReturn (ue); |
303 | } | |
304 | ||
305 | extern void nextIterParam (void) | |
306 | { | |
307 | llassert (ProcessingIterVars); | |
308 | saveIterParamNo++; | |
309 | } | |
310 | ||
311 | extern int iterParamNo (void) | |
312 | { | |
313 | llassert (ProcessingIterVars); | |
314 | return saveIterParamNo; | |
315 | } | |
316 | ||
317 | /* | |
318 | ** yucky hacks to put it in the right place | |
319 | */ | |
320 | ||
321 | /*@only@*/ uentry | |
322 | makeCurrentParam (idDecl t) | |
323 | { | |
324 | uentry ue; | |
325 | ||
326 | saveStoreLoc = fileloc_undefined; | |
327 | ||
328 | /* param number unknown */ | |
329 | ||
330 | ue = uentry_makeParam (t, 0); | |
331 | return ue; | |
332 | } | |
333 | ||
334 | ctype | |
335 | declareUnnamedEnum (enumNameList el) | |
336 | { | |
337 | ctype ret = usymtab_enumEnumNameListType (el); | |
338 | ctype rt; | |
339 | uentry e; | |
340 | ||
341 | if (ctype_isDefined (ret)) | |
342 | { | |
343 | rt = ret; | |
344 | e = uentry_makeEnumTagLoc (ctype_enumTag (rt), ret); | |
345 | ||
346 | reflectStorageClass (e); | |
347 | usymtab_supGlobalEntry (e); | |
348 | ||
349 | declareEnumList (el, ret, g_currentloc); | |
350 | enumNameList_free (el); | |
351 | } | |
352 | else | |
353 | { | |
354 | ctype ct = ctype_createEnum (fakeTag (), el); | |
355 | ||
356 | e = uentry_makeEnumTagLoc (ctype_enumTag (ctype_realType (ct)), ct); | |
357 | reflectStorageClass (e); | |
358 | ||
359 | e = usymtab_supGlobalEntryReturn (e); | |
360 | rt = uentry_getAbstractType (e); | |
361 | declareEnumList (el, ct, g_currentloc); | |
362 | } | |
363 | ||
364 | return (rt); | |
365 | } | |
366 | ||
367 | ctype | |
368 | declareEnum (cstring ename, enumNameList el) | |
369 | { | |
370 | ctype cet; | |
371 | uentry e; | |
372 | ||
373 | llassert (cstring_isDefined (ename)); | |
374 | ||
375 | cet = ctype_createEnum (ename, el); | |
376 | e = uentry_makeEnumTagLoc (ename, cet); | |
377 | reflectStorageClass (e); | |
378 | e = usymtab_supGlobalEntryReturn (e); | |
379 | cet = uentry_getType (e); | |
380 | declareEnumList (el, cet, uentry_whereLast (e)); | |
381 | return (uentry_getAbstractType (e)); | |
382 | } | |
383 | ||
384 | static void | |
385 | declareEnumList (enumNameList el, ctype c, fileloc loc) | |
386 | { | |
387 | bool boolnames = FALSE; | |
388 | bool othernames = FALSE; | |
389 | ||
390 | (void) context_getSaveLocation (); /* undefine it */ | |
391 | ||
392 | if (context_maybeSet (FLG_NUMENUMMEMBERS)) | |
393 | { | |
394 | int maxnum = context_getValue (FLG_NUMENUMMEMBERS); | |
395 | int num = enumNameList_size (el); | |
396 | ||
397 | if (num > maxnum) | |
398 | { | |
399 | voptgenerror | |
400 | (FLG_NUMENUMMEMBERS, | |
401 | message ("Enumerator %s declared with %d members (limit is set to %d)", | |
402 | ctype_unparse (c), num, maxnum), | |
403 | loc); | |
404 | } | |
405 | } | |
406 | ||
407 | enumNameList_elements (el, e) | |
408 | { | |
409 | uentry ue = usymtab_lookupExposeGlob (e); | |
410 | ctype ct = uentry_getType (ue); | |
411 | ||
412 | llassert (uentry_isEnumConstant (ue)); | |
413 | ||
414 | if (ctype_isUnknown (ct)) | |
415 | { | |
416 | uentry_setType (ue, c); | |
417 | } | |
418 | else | |
419 | { | |
420 | if (cstring_equal (e, context_getFalseName ()) | |
421 | || cstring_equal (e, context_getTrueName ())) | |
422 | { | |
423 | if (othernames) | |
424 | { | |
425 | if (optgenerror | |
426 | (FLG_INCONDEFS, | |
427 | message ("Enumerator mixes boolean name (%s) with " | |
428 | "non-boolean names", | |
429 | e), | |
430 | uentry_whereLast (ue))) | |
431 | { | |
432 | ; | |
433 | } | |
434 | } | |
435 | ||
436 | boolnames = TRUE; | |
437 | uentry_setType (ue, ctype_bool); | |
438 | DPRINTF (("Set type: %s / %s", | |
439 | uentry_unparse (ue), ctype_unparse (ctype_bool))); | |
440 | } | |
441 | else | |
442 | { | |
443 | if (boolnames) | |
444 | { | |
445 | if (optgenerror | |
446 | (FLG_INCONDEFS, | |
447 | message ("Enumerator mixes boolean names (%s, %s) with " | |
448 | "non-boolean name: %s", | |
449 | context_getTrueName (), | |
450 | context_getFalseName (), | |
451 | e), | |
452 | uentry_whereLast (ue))) | |
453 | { | |
454 | ; | |
455 | } | |
456 | } | |
457 | ||
458 | othernames = TRUE; | |
459 | } | |
460 | ||
461 | if (!ctype_match (c, ct)) | |
462 | { | |
463 | if (ctype_isDirectBool (ct)) | |
464 | { | |
465 | if (cstring_equal (e, context_getFalseName ()) | |
466 | || cstring_equal (e, context_getTrueName ())) | |
467 | { | |
468 | DPRINTF (("Here we are!")); | |
469 | } | |
470 | else | |
471 | { | |
472 | if (optgenerror | |
473 | (FLG_INCONDEFS, | |
474 | message ("Enumerator member %s declared with " | |
475 | "inconsistent type: %s", | |
476 | e, ctype_unparse (c)), | |
477 | uentry_whereLast (ue))) | |
478 | { | |
479 | uentry_showWhereSpecifiedExtra | |
480 | (ue, cstring_copy (ctype_unparse (ct))); | |
481 | } | |
482 | } | |
483 | } | |
484 | else | |
485 | { | |
486 | if (optgenerror | |
487 | (FLG_INCONDEFS, | |
488 | message ("Enumerator member %s declared with " | |
489 | "inconsistent type: %s", | |
490 | e, ctype_unparse (c)), | |
491 | uentry_whereLast (ue))) | |
492 | { | |
493 | uentry_showWhereSpecifiedExtra | |
494 | (ue, cstring_copy (ctype_unparse (ct))); | |
495 | } | |
496 | } | |
497 | } | |
498 | } | |
499 | } end_enumNameList_elements; | |
500 | } | |
501 | ||
502 | static /*@dependent@*/ uentryList currentParamList; | |
503 | ||
470b7798 | 504 | /*drl added 3-28-2001*/ |
505 | /* this function takes a list of paramentar and generates a list | |
506 | of constraints. | |
507 | Currently the only constraints gnerated are MaxSet(p) >= 0 for all pointers | |
508 | */ | |
2934b455 | 509 | |
c3e695ff | 510 | void setImplictfcnConstraints (void) |
470b7798 | 511 | { |
512 | uentryList params; | |
513 | sRef s; | |
514 | constraint c; | |
515 | params = currentParamList; | |
516 | ||
28bf4b0b | 517 | if (constraintList_isDefined(implicitFcnConstraints) ) |
bb25bea6 | 518 | constraintList_free(implicitFcnConstraints); |
519 | ||
c3e695ff | 520 | implicitFcnConstraints = constraintList_makeNew(); |
470b7798 | 521 | |
522 | uentryList_elements (params, el) | |
523 | { | |
524 | DPRINTF((message("setImplictfcnConstraints doing: %s", uentry_unparse(el) ) )); | |
525 | ||
526 | s = uentry_getSref(el); | |
527 | if (sRef_isReference (s) ) | |
528 | { | |
529 | DPRINTF((message ("%s is a pointer", sRef_unparse(s) ) )); | |
530 | } | |
531 | else | |
532 | { | |
533 | DPRINTF((message ("%s is NOT a pointer", sRef_unparse(s) ) )); | |
534 | } | |
535 | /*drl 4/26/01 | |
536 | chagned this is MaxSet(s) == 0 to MaxSet(s) >= 0 */ | |
537 | ||
538 | c = constraint_makeSRefWriteSafeInt (s, 0); | |
539 | // constraint_makeSRefSetBufferSize (s, 0); | |
540 | implicitFcnConstraints = constraintList_add(implicitFcnConstraints , c); | |
541 | } | |
542 | end_uentryList_elements; | |
543 | } | |
544 | ||
2934b455 | 545 | |
546 | /*@observer@*/ constraintList getImplicitFcnConstraints (void) | |
547 | { | |
548 | return implicitFcnConstraints; | |
549 | } | |
550 | ||
616915dd | 551 | void setCurrentParams (/*@dependent@*/ uentryList ue) |
552 | { | |
553 | currentParamList = ue; | |
554 | } | |
555 | ||
556 | void clearCurrentParams (void) | |
557 | { | |
558 | currentParamList = uentryList_undefined; | |
559 | } | |
560 | ||
561 | /* | |
562 | ** requires: uentry_isFunction (e) | |
563 | ** parameter names for current function are in currentParamList | |
564 | */ | |
565 | ||
566 | static void enterFunctionParams (uentryList params) | |
567 | { | |
568 | int paramno = 0; | |
569 | ||
570 | uentryList_elements (params, current) | |
571 | { | |
572 | if (uentry_hasName (current)) | |
573 | { | |
574 | uentry_setParamNo (current, paramno); | |
575 | usymtab_supEntry (uentry_copy (current)); | |
576 | } | |
577 | ||
578 | paramno++; | |
579 | } end_uentryList_elements; | |
580 | } | |
581 | ||
582 | ||
583 | extern void enterParamsTemp (void) | |
584 | { | |
585 | usymtab_enterScope (); | |
586 | enterFunctionParams (currentParamList); | |
587 | } | |
588 | ||
589 | extern void exitParamsTemp (void) | |
590 | { | |
591 | usymtab_quietPlainExitScope (); | |
592 | } | |
593 | ||
28bf4b0b | 594 | static /*@exposed@*/ uentry clabstract_globalDeclareFunction (idDecl tid) |
616915dd | 595 | { |
596 | ctype deftype = idDecl_getCtype (tid); | |
597 | ctype rettype; | |
598 | uentry ue; | |
599 | ||
600 | DPRINTF (("Global function: %s", idDecl_unparse (tid))); | |
28bf4b0b | 601 | |
616915dd | 602 | if (ctype_isFunction (deftype)) |
603 | { | |
28bf4b0b | 604 | rettype = ctype_getReturnType (deftype); |
616915dd | 605 | } |
606 | else | |
607 | { | |
608 | rettype = ctype_unknown; | |
609 | } | |
610 | ||
611 | /* | |
612 | ** check has been moved here... | |
613 | */ | |
614 | ||
615 | if (ctype_isFunction (idDecl_getCtype (tid))) | |
616 | { | |
617 | ue = uentry_makeIdFunction (tid); | |
618 | reflectSpecialCode (ue); | |
619 | reflectArgsUsed (ue); | |
620 | } | |
621 | else | |
622 | { | |
623 | llparseerror (message ("Inconsistent function declaration: %q", | |
624 | idDecl_unparse (tid))); | |
625 | ||
626 | tid = idDecl_replaceCtype | |
627 | (tid, ctype_makeFunction (ctype_unknown, uentryList_undefined)); | |
628 | ue = uentry_makeIdFunction (tid); | |
629 | } | |
616915dd | 630 | |
28bf4b0b | 631 | reflectStorageClass (ue); |
616915dd | 632 | uentry_checkParams (ue); |
28bf4b0b | 633 | |
634 | DPRINTF (("Supercede function: %s", uentry_unparseFull (ue))); | |
616915dd | 635 | |
636 | ue = usymtab_supGlobalEntryReturn (ue); | |
28bf4b0b | 637 | DPRINTF (("After supercede function: %s", uentry_unparseFull (ue))); |
638 | ||
616915dd | 639 | context_enterFunction (ue); |
640 | enterFunctionParams (uentry_getParams (ue)); | |
641 | ||
642 | resetStorageClass (); | |
28bf4b0b | 643 | DPRINTF (("Function: %s", uentry_unparseFull (ue))); |
616915dd | 644 | return (ue); |
645 | } | |
646 | ||
647 | /* | |
648 | ** for now, no type checking | |
649 | ** (must check later though!) | |
650 | */ | |
651 | ||
652 | static /*@only@*/ uentry globalDeclareOldStyleFunction (idDecl tid) | |
653 | { | |
654 | uentry ue; | |
655 | ||
656 | /* | |
657 | ** check has been moved here... | |
658 | */ | |
659 | ||
660 | if (cstring_equalLit (idDecl_observeId (tid), "main")) | |
661 | { | |
662 | context_setFlagTemp (FLG_MAINTYPE, FALSE); | |
663 | } | |
664 | ||
665 | ue = uentry_makeIdFunction (tid); | |
666 | reflectStorageClass (ue); | |
667 | reflectSpecialCode (ue); | |
668 | reflectArgsUsed (ue); | |
669 | uentry_setDefined (ue, g_currentloc); | |
28bf4b0b | 670 | uentry_checkParams (ue); |
616915dd | 671 | resetStorageClass (); |
672 | return (ue); | |
673 | } | |
674 | ||
675 | static void oldStyleDeclareFunction (/*@only@*/ uentry e) | |
676 | { | |
677 | uentryList params = saveParamList; | |
678 | ctype rt = uentry_getType (e); | |
679 | ||
680 | llassert (ctype_isFunction (rt)); | |
681 | ||
682 | e = usymtab_supGlobalEntryReturn (e); | |
683 | ||
684 | context_enterFunction (e); | |
685 | enterFunctionParams (params); | |
686 | saveParamList = uentryList_undefined; | |
687 | resetStorageClass (); | |
688 | } | |
689 | ||
28bf4b0b | 690 | void clabstract_declareFunction (idDecl tid) /*@globals undef saveFunction; @*/ |
616915dd | 691 | { |
692 | uentry ue; | |
693 | ||
694 | DPRINTF (("Declare function: %s", idDecl_unparse (tid))); | |
695 | ||
696 | if (ProcessingParams) | |
697 | { | |
698 | ue = globalDeclareOldStyleFunction (tid); | |
699 | saveFunction = ue; | |
700 | } | |
701 | else | |
702 | { | |
703 | saveFunction = uentry_undefined; | |
704 | ||
705 | if (context_inRealFunction ()) | |
706 | { | |
707 | ue = uentry_makeVariableLoc (idDecl_observeId (tid), ctype_unknown); | |
708 | ||
709 | llparseerror (message ("Function declared inside function: %q", | |
710 | idDecl_unparse (tid))); | |
711 | ||
712 | context_quietExitFunction (); | |
713 | ue = usymtab_supEntryReturn (ue); | |
714 | } | |
715 | else | |
716 | { | |
717 | if (context_inInnerScope ()) | |
718 | { | |
719 | llparseerror (message ("Declaration in inner context: %q", | |
720 | idDecl_unparse (tid))); | |
721 | ||
722 | sRef_setGlobalScope (); | |
723 | ue = uentry_makeVariableLoc (idDecl_observeId (tid), | |
724 | ctype_unknown); | |
725 | ue = usymtab_supGlobalEntryReturn (ue); | |
726 | sRef_clearGlobalScope (); | |
727 | } | |
728 | else | |
729 | { | |
28bf4b0b | 730 | ue = clabstract_globalDeclareFunction (tid); |
616915dd | 731 | } |
732 | } | |
733 | ||
734 | resetGlobals (); | |
735 | } | |
736 | ||
737 | resetStorageClass (); | |
738 | idDecl_free (tid); | |
739 | } | |
740 | ||
741 | void declareStaticFunction (idDecl tid) /*@globals undef saveFunction; @*/ | |
742 | { | |
743 | uentry ue; | |
744 | ||
745 | DPRINTF (("Declare static funciton: %s", idDecl_unparse (tid))); | |
746 | ||
747 | if (ProcessingParams) | |
748 | { | |
749 | ue = globalDeclareOldStyleFunction (tid); | |
750 | saveFunction = ue; | |
751 | } | |
752 | else | |
753 | { | |
754 | saveFunction = uentry_undefined; | |
755 | ||
756 | if (context_inRealFunction ()) | |
757 | { | |
758 | ue = uentry_makeVariableLoc (idDecl_observeId (tid), ctype_unknown); | |
759 | ||
760 | llparseerror (message ("Function declared inside function: %q", | |
761 | idDecl_unparse (tid))); | |
762 | ||
763 | context_quietExitFunction (); | |
764 | ue = usymtab_supEntryReturn (ue); | |
765 | } | |
766 | else | |
767 | { | |
768 | if (context_inInnerScope ()) | |
769 | { | |
770 | llparseerror (message ("Declaration in inner context: %q", | |
771 | idDecl_unparse (tid))); | |
772 | ||
773 | sRef_setGlobalScope (); | |
774 | ue = uentry_makeVariableLoc (idDecl_observeId (tid), | |
775 | ctype_unknown); | |
776 | ue = usymtab_supGlobalEntryReturn (ue); | |
777 | sRef_clearGlobalScope (); | |
778 | } | |
779 | else | |
780 | { | |
781 | ctype deftype = idDecl_getCtype (tid); | |
782 | ctype rettype; | |
783 | ||
784 | if (ctype_isFunction (deftype)) | |
785 | { | |
28bf4b0b | 786 | rettype = ctype_getReturnType (deftype); |
616915dd | 787 | } |
788 | else | |
789 | { | |
790 | rettype = ctype_unknown; | |
791 | } | |
792 | ||
793 | /* | |
794 | ** check has been moved here... | |
795 | */ | |
796 | ||
797 | if (ctype_isFunction (idDecl_getCtype (tid))) | |
798 | { | |
799 | ue = uentry_makeIdFunction (tid); | |
800 | reflectSpecialCode (ue); | |
801 | reflectArgsUsed (ue); | |
802 | } | |
803 | else | |
804 | { | |
805 | llparseerror (message ("Inconsistent function declaration: %q", | |
806 | idDecl_unparse (tid))); | |
807 | ||
808 | tid = idDecl_replaceCtype | |
809 | (tid, ctype_makeFunction (ctype_unknown, uentryList_undefined)); | |
810 | ue = uentry_makeIdFunction (tid); | |
811 | } | |
812 | ||
813 | reflectStorageClass (ue); | |
814 | uentry_setStatic (ue); | |
815 | ||
816 | uentry_checkParams (ue); | |
616915dd | 817 | |
818 | DPRINTF (("Sub global entry: %s", uentry_unparse (ue))); | |
819 | ue = usymtab_supGlobalEntryReturn (ue); | |
820 | ||
821 | context_enterFunction (ue); | |
822 | enterFunctionParams (uentry_getParams (ue)); | |
823 | resetStorageClass (); | |
824 | } | |
825 | } | |
826 | ||
827 | resetGlobals (); | |
828 | } | |
829 | ||
830 | resetStorageClass (); | |
831 | idDecl_free (tid); | |
832 | } | |
833 | ||
834 | void | |
835 | checkTypeDecl (uentry e, ctype rep) | |
836 | { | |
837 | cstring n = uentry_getName (e); | |
838 | ||
28bf4b0b | 839 | DPRINTF (("Check type decl: %s", uentry_unparseFull (e))); |
616915dd | 840 | |
841 | if (cstring_equal (context_getBoolName (), n)) | |
842 | { | |
843 | ctype rrep = ctype_realType (rep); | |
844 | ||
845 | /* | |
846 | ** for abstract enum types, we need to fix the enum members: | |
847 | ** they should have the abstract type, not the rep type. | |
848 | */ | |
849 | ||
850 | if (ctype_isEnum (ctype_realType (rrep))) | |
851 | { | |
852 | enumNameList el = ctype_elist (rrep); | |
853 | ||
854 | enumNameList_elements (el, ye) | |
855 | { | |
856 | if (usymtab_existsGlob (ye)) | |
857 | { | |
858 | uentry ue = usymtab_lookupSafe (ye); | |
859 | uentry_setType (ue, ctype_bool); | |
860 | } | |
861 | ||
862 | if (cstring_equal (context_getTrueName (), ye) | |
863 | || cstring_equal (context_getFalseName (), ye)) | |
864 | { | |
865 | ; | |
866 | } | |
867 | else | |
868 | { | |
869 | vgenhinterror | |
870 | (FLG_SYNTAX, | |
871 | message ("Member of boolean enumerated type definition " | |
872 | "does not match name set to represent TRUE " | |
873 | "or FALSE: %s", | |
874 | ye), | |
875 | message ("Use -boolfalse and -booltrue to set the " | |
876 | "name of false and true boolean values."), | |
877 | uentry_whereDefined (e)); | |
878 | } | |
879 | } end_enumNameList_elements; | |
880 | } | |
881 | } | |
882 | ||
883 | if (usymtab_exists (n)) | |
884 | { | |
885 | usymId llm = usymtab_getId (n); | |
886 | uentry le = usymtab_getTypeEntry (llm); | |
887 | ||
888 | uentry_setDeclared (e, g_currentloc); | |
889 | uentry_setSref (e, sRef_makeGlobal (llm, uentry_getType (le))); | |
890 | ||
891 | DPRINTF (("Here we are: %s / %s", | |
892 | n, context_getBoolName ())); | |
893 | ||
894 | if (uentry_isAbstractDatatype (le)) | |
895 | { | |
896 | ctype rrep = ctype_realType (rep); | |
897 | ||
28bf4b0b | 898 | DPRINTF (("Abstract type: %s", uentry_unparseFull (le))); |
899 | ||
616915dd | 900 | /* |
901 | ** for abstract enum types, we need to fix the enum members: | |
902 | ** they should have the abstract type, not the rep type. | |
903 | */ | |
904 | ||
905 | if (ctype_isEnum (ctype_realType (rrep))) | |
906 | { | |
907 | ctype at = uentry_getAbstractType (le); | |
908 | enumNameList el = ctype_elist (rrep); | |
909 | ||
910 | enumNameList_elements (el, ye) | |
911 | { | |
912 | if (usymtab_existsGlob (ye)) | |
913 | { | |
914 | uentry ue = usymtab_lookupSafe (ye); | |
915 | ||
916 | llassert (uentry_isEitherConstant (ue)); | |
917 | llassertprint (ctype_match (uentry_getType (ue), rrep), | |
918 | ("Bad enum: %s / %s", | |
919 | uentry_unparse (ue), | |
920 | ctype_unparse (rrep))); | |
921 | ||
922 | uentry_setType (ue, at); | |
923 | } | |
924 | } end_enumNameList_elements; | |
925 | } | |
926 | ||
927 | if (uentry_isMutableDatatype (le)) | |
928 | { | |
929 | /* maybe more complicated if abstract and immutable ? */ | |
930 | ||
931 | if (!ctype_isRealPointer (rep) && !ctype_isRealAbstract (rep)) | |
932 | { | |
933 | voptgenerror | |
934 | (FLG_MUTREP, | |
935 | message ("Mutable abstract type %s declared without pointer " | |
936 | "indirection: %s (violates assignment semantics)", | |
937 | n, ctype_unparse (rep)), | |
938 | uentry_whereDefined (e)); | |
939 | ||
940 | uentry_setMutable (e); | |
941 | } | |
942 | } | |
943 | } | |
944 | } | |
945 | else | |
946 | { | |
947 | fileloc fl = uentry_whereDeclared (e); | |
948 | ||
949 | if (context_getFlag (FLG_LIKELYBOOL) | |
950 | && !context_getFlag (FLG_BOOLINT)) | |
951 | { | |
952 | if ((cstring_equalLit (n, "BOOL") | |
953 | || cstring_equalLit (n, "Bool") | |
954 | || cstring_equalLit (n, "bool") | |
955 | || cstring_equalLit (n, "boolean") | |
956 | || cstring_equalLit (n, "Boolean") | |
957 | || cstring_equalLit (n, "BOOLEAN")) | |
958 | && !(cstring_equal (n, context_getBoolName ()))) | |
959 | { | |
960 | if (context_setBoolName ()) { | |
961 | voptgenerror | |
962 | (FLG_LIKELYBOOL, | |
963 | message ("Type %s is probably meant as a boolean type, but does " | |
964 | "not match the boolean type name \"%s\".", | |
965 | n, | |
966 | context_getBoolName ()), | |
967 | fl); | |
968 | } else | |
969 | voptgenerror | |
970 | (FLG_LIKELYBOOL, | |
971 | message ("Type %s is probably meant as a boolean type, " | |
972 | "but the boolean type name is not set. " | |
973 | "Use -booltype %s to set it.", | |
974 | n, | |
975 | n), | |
976 | fl); | |
977 | } | |
978 | } | |
979 | ||
980 | if (!uentry_isStatic (e) | |
981 | && !ctype_isFunction (uentry_getType (e)) | |
982 | && !fileloc_isLib (fl) | |
983 | && !fileloc_isImport (fl) | |
984 | && fileloc_isHeader (fl)) | |
985 | { | |
986 | voptgenerror (FLG_EXPORTTYPE, | |
987 | message ("Type exported, but not specified: %s\n", n), | |
988 | fl); | |
989 | } | |
990 | } | |
991 | ||
992 | cstring_free (n); | |
993 | } | |
994 | ||
995 | uentryList | |
996 | fixUentryList (idDeclList tl, qtype q) | |
997 | { | |
998 | uentryList f = uentryList_new (); | |
999 | ||
1000 | idDeclList_elements (tl, i) | |
1001 | { | |
1002 | if (idDecl_isDefined (i)) | |
1003 | { | |
1004 | uentry ue; | |
1005 | uentry old; | |
1006 | ctype rt; | |
1007 | ||
1008 | (void) idDecl_fixBase (i, q); | |
1009 | ||
1010 | /* | |
1011 | ** implicit annotations | |
1012 | */ | |
1013 | ||
1014 | (void) fixStructDecl (i); | |
1015 | ||
1016 | ue = uentry_makeIdVariable (i); | |
1017 | rt = ctype_realType (uentry_getType (ue)); | |
1018 | ||
1019 | /* | |
1020 | ** where is this here??? | |
1021 | ||
1022 | if (ctype_isArray (rt) || ctype_isSU (rt)) | |
1023 | { | |
1024 | sRef_setAllocated (uentry_getSref (ue), uentry_whereDefined (ue)); | |
1025 | } | |
1026 | ||
1027 | ** | |
1028 | */ | |
1029 | ||
1030 | if (uentry_isValid (old = uentryList_lookupField (f, uentry_rawName (ue)))) | |
1031 | { | |
1032 | if (optgenerror (FLG_SYNTAX, | |
1033 | message ("Field name reused: %s", uentry_rawName (ue)), | |
1034 | uentry_whereDefined (ue))) | |
1035 | { | |
1036 | llgenmsg (message ("Previous use of %s", uentry_rawName (ue)), | |
1037 | uentry_whereDefined (old)); | |
1038 | } | |
1039 | } | |
1040 | ||
1041 | f = uentryList_add (f, ue); | |
1042 | } | |
1043 | } end_idDeclList_elements; | |
1044 | ||
1045 | idDeclList_free (tl); | |
1046 | return (f); | |
1047 | } | |
1048 | ||
1049 | /* | |
1050 | ** This is a hack to support unnamed struct/union fields as done by | |
1051 | ** Microsoft VC++. It is not supported by the ANSI standard. | |
1052 | ** | |
1053 | ** The inner fields are added to the outer structure. This is meaningful | |
1054 | ** for nesting structs inside unions, but lclint does no related | |
1055 | ** checking. | |
1056 | */ | |
1057 | ||
1058 | uentryList | |
1059 | fixUnnamedDecl (qtype q) | |
1060 | { | |
1061 | ctype ct = ctype_realType (qtype_getType (q)); | |
1062 | ||
1063 | if (ctype_isStruct (ct) || ctype_isUnion (ct)) | |
1064 | { | |
1065 | uentryList res = ctype_getFields (ct); | |
1066 | ||
1067 | return (uentryList_copy (res)); | |
1068 | } | |
1069 | else | |
1070 | { | |
1071 | BADBRANCHCONT; | |
1072 | } | |
1073 | ||
1074 | return uentryList_undefined; | |
1075 | } | |
1076 | ||
1077 | void setStorageClass (storageClassCode sc) | |
1078 | { | |
1079 | storageClass = sc; | |
1080 | } | |
1081 | ||
1082 | void | |
1083 | setProcessingIterVars (uentry iter) | |
1084 | { | |
1085 | ProcessingIterVars = TRUE; | |
1086 | currentIter = iter; | |
1087 | saveIterParamNo = 0; | |
1088 | } | |
1089 | ||
1090 | void | |
1091 | setProcessingGlobalsList () | |
1092 | { | |
1093 | ProcessingGlobals = TRUE; | |
616915dd | 1094 | fcnNoGlobals = FALSE; |
1095 | } | |
1096 | ||
1097 | static bool ProcessingGlobMods = FALSE; | |
1098 | ||
1099 | void | |
1100 | setProcessingGlobMods () | |
1101 | { | |
1102 | ProcessingGlobMods = TRUE; | |
1103 | } | |
1104 | ||
1105 | void | |
1106 | clearProcessingGlobMods () | |
1107 | { | |
1108 | ProcessingGlobMods = FALSE; | |
1109 | } | |
1110 | ||
1111 | bool | |
1112 | isProcessingGlobMods () | |
1113 | { | |
1114 | return (ProcessingGlobMods); | |
1115 | } | |
1116 | ||
1117 | static void resetGlobals (void) | |
1118 | { | |
1119 | ProcessingGlobals = FALSE; | |
616915dd | 1120 | fcnNoGlobals = FALSE; |
1121 | } | |
1122 | ||
1123 | void | |
1124 | unsetProcessingGlobals () | |
1125 | { | |
1126 | ProcessingGlobals = FALSE; | |
1127 | } | |
1128 | ||
1129 | void | |
1130 | setProcessingVars (/*@only@*/ qtype q) | |
1131 | { | |
1132 | ProcessingVars = TRUE; | |
1133 | qtype_free (processingType); | |
1134 | processingType = q; | |
1135 | } | |
1136 | ||
1137 | static void | |
1138 | setGenericParamList (/*@dependent@*/ uentryList pm) | |
1139 | { | |
1140 | ProcessingParams = TRUE; | |
1141 | saveParamList = pm; | |
1142 | } | |
1143 | ||
1144 | void | |
1145 | setProcessingTypedef (/*@only@*/ qtype q) | |
1146 | { | |
1147 | ProcessingTypedef = TRUE; | |
1148 | ||
1149 | qtype_free (processingType); | |
1150 | processingType = q; | |
1151 | } | |
1152 | ||
1153 | void | |
1154 | unsetProcessingVars () | |
1155 | { | |
1156 | resetStorageClass (); | |
1157 | ProcessingVars = FALSE; | |
1158 | } | |
1159 | ||
1160 | void | |
1161 | doneParams () | |
1162 | { | |
1163 | if (ProcessingParams) | |
1164 | { | |
1165 | if (uentry_isInvalid (saveFunction)) | |
1166 | { | |
1167 | llbuglit ("unsetProcessingVars: no saved function\n"); | |
616915dd | 1168 | } |
1169 | else | |
1170 | { | |
28bf4b0b | 1171 | ctype ct = ctype_getReturnType (uentry_getType (saveFunction)); |
616915dd | 1172 | uentryList params = uentryList_copy (saveParamList); |
1173 | ctype ct2 = ctype_makeFunction (ct, params); | |
1174 | ||
1175 | uentry_setType (saveFunction, ct2); | |
1176 | ProcessingParams = FALSE; | |
1177 | ||
616915dd | 1178 | oldStyleDeclareFunction (saveFunction); |
1179 | saveFunction = uentry_undefined; | |
1180 | resetGlobals (); | |
1181 | } | |
1182 | } | |
1183 | else | |
1184 | { | |
1185 | /* | |
1186 | ** If the paramlist used a type name, we could be here. | |
1187 | */ | |
1188 | ||
1189 | llfatalerror (message ("%q: Old-style function parameter list uses a " | |
1190 | "type name.", fileloc_unparse (g_currentloc))); | |
1191 | } | |
1192 | } | |
1193 | ||
1194 | void | |
1195 | checkDoneParams () | |
1196 | { | |
1197 | if (uentry_isValid (saveFunction)) | |
1198 | { | |
1199 | /* | |
1200 | ** old style declaration | |
1201 | */ | |
1202 | ||
28bf4b0b | 1203 | ctype ct = ctype_getReturnType (uentry_getType (saveFunction)); |
616915dd | 1204 | ctype ct2; |
1205 | ||
1206 | uentryList_elements (saveParamList, current) | |
1207 | { | |
1208 | uentry_setType (current, ctype_int); /* all params are ints */ | |
1209 | } end_uentryList_elements; | |
1210 | ||
1211 | ct2 = ctype_makeParamsFunction (ct, uentryList_copy (saveParamList)); | |
1212 | ||
1213 | uentry_setType (saveFunction, ct2); | |
1214 | ProcessingParams = FALSE; | |
1215 | ||
1216 | oldStyleDeclareFunction (saveFunction); | |
1217 | saveFunction = uentry_undefined; | |
1218 | } | |
1219 | } | |
1220 | ||
1221 | void | |
1222 | unsetProcessingTypedef () | |
1223 | { | |
1224 | ProcessingTypedef = FALSE; | |
1225 | } | |
1226 | ||
1227 | void checkConstant (qtype t, idDecl id) | |
1228 | { | |
1229 | uentry e; | |
1230 | ||
1231 | id = idDecl_fixBase (id, t); | |
1232 | e = uentry_makeIdConstant (id); | |
1233 | ||
1234 | reflectStorageClass (e); | |
1235 | resetStorageClass (); | |
1236 | ||
1237 | usymtab_supGlobalEntry (e); | |
1238 | } | |
1239 | ||
1240 | void checkValueConstant (qtype t, idDecl id, exprNode e) | |
1241 | { | |
1242 | uentry ue; | |
1243 | ||
1244 | id = idDecl_fixBase (id, t); | |
1245 | ue = uentry_makeIdConstant (id); | |
1246 | reflectStorageClass (ue); | |
1247 | resetStorageClass (); | |
1248 | ||
1249 | if (exprNode_isDefined (e)) | |
1250 | { | |
1251 | if (!exprNode_matchType (uentry_getType (ue), e)) | |
1252 | { | |
1253 | (void) gentypeerror | |
1254 | (exprNode_getType (e), e, | |
1255 | uentry_getType (ue), exprNode_undefined, | |
1256 | message ("Constant %q initialized to type %t, expects %t: %s", | |
1257 | uentry_getName (ue), | |
1258 | exprNode_getType (e), | |
1259 | uentry_getType (ue), | |
1260 | exprNode_unparse (e)), | |
1261 | exprNode_loc (e)); | |
1262 | } | |
1263 | else | |
1264 | { | |
1265 | if (exprNode_hasValue (e)) | |
1266 | { | |
1267 | uentry_mergeConstantValue (ue, multiVal_copy (exprNode_getValue (e))); | |
1268 | } | |
1269 | } | |
1270 | } | |
1271 | ||
1272 | usymtab_supGlobalEntry (ue); | |
1273 | } | |
1274 | ||
616915dd | 1275 | void processNamedDecl (idDecl t) |
1276 | { | |
1277 | if (qtype_isUndefined (processingType)) | |
1278 | { | |
1279 | llparseerror (message ("No type before declaration name: %q", idDecl_unparse (t))); | |
1280 | ||
1281 | processingType = qtype_create (ctype_unknown); | |
1282 | } | |
1283 | ||
1284 | t = idDecl_fixBase (t, processingType); | |
1285 | ||
1286 | DPRINTF (("Declare: %s", idDecl_unparse (t))); | |
1287 | ||
1288 | if (ProcessingGlobals) | |
1289 | { | |
1290 | cstring id = idDecl_getName (t); | |
1291 | uentry ue = usymtab_lookupSafe (id); | |
28bf4b0b | 1292 | |
616915dd | 1293 | if (!uentry_isValid (ue)) |
1294 | { | |
1295 | llerror (FLG_UNRECOG, | |
1296 | message ("Variable used in globals list is undeclared: %s", id)); | |
1297 | } | |
1298 | else | |
1299 | { | |
1300 | if (!ctype_match (uentry_getType (ue), idDecl_getCtype (t))) | |
1301 | { | |
1302 | voptgenerror | |
1303 | (FLG_INCONDEFS, | |
1304 | message ("Variable %s used in globals list declared %s, " | |
1305 | "but listed as %s", | |
1306 | id, ctype_unparse (uentry_getType (ue)), | |
1307 | ctype_unparse (idDecl_getCtype (t))), | |
1308 | g_currentloc); | |
1309 | } | |
1310 | else | |
1311 | { | |
1312 | sRef sr = sRef_copy (uentry_getSref (ue)); | |
616915dd | 1313 | reflectGlobalQualifiers (sr, idDecl_getQuals (t)); |
616915dd | 1314 | } |
1315 | } | |
1316 | } | |
1317 | else if (ProcessingVars) | |
1318 | { | |
1319 | uentry e; | |
1320 | ctype ct; | |
1321 | ||
1322 | ct = ctype_realType (idDecl_getCtype (t)); | |
1323 | ||
1324 | if (ProcessingParams) | |
1325 | { | |
1326 | cstring id = idDecl_getName (t); | |
1327 | int paramno = uentryList_lookupRealName (saveParamList, id); | |
1328 | ||
1329 | if (paramno >= 0) | |
1330 | { | |
1331 | uentry cparam = uentryList_getN (saveParamList, paramno); | |
1332 | ||
1333 | uentry_setType (cparam, idDecl_getCtype (t)); | |
1334 | uentry_reflectQualifiers (cparam, idDecl_getQuals (t)); | |
1335 | uentry_setDeclaredOnly (cparam, context_getSaveLocation ()); | |
1336 | } | |
1337 | else | |
1338 | { | |
1339 | llfatalerrorLoc | |
1340 | (message ("Old style declaration uses unlisted parameter: %s", | |
1341 | id)); | |
1342 | } | |
1343 | } | |
1344 | else | |
1345 | { | |
1346 | fileloc loc; | |
1347 | ||
1348 | if (context_inIterDef ()) | |
1349 | { | |
1350 | cstring pname = makeParam (idDecl_observeId (t)); | |
1351 | uentry p = usymtab_lookupSafe (pname); | |
1352 | ||
1353 | cstring_free (pname); | |
1354 | ||
1355 | if (uentry_isYield (p)) | |
28bf4b0b | 1356 | { |
1357 | e = uentry_makeParam (t, sRef_getParam (uentry_getSref (p))); | |
1358 | uentry_checkYieldParam (p, e); | |
1359 | usymtab_supEntrySref (e); | |
1360 | return; | |
1361 | } | |
616915dd | 1362 | } |
28bf4b0b | 1363 | |
616915dd | 1364 | if ((hasSpecialCode () || argsUsed) |
1365 | && ctype_isFunction (idDecl_getCtype (t))) | |
28bf4b0b | 1366 | { |
616915dd | 1367 | e = uentry_makeIdFunction (t); |
1368 | reflectSpecialCode (e); | |
1369 | reflectArgsUsed (e); | |
28bf4b0b | 1370 | } |
616915dd | 1371 | else |
28bf4b0b | 1372 | { |
1373 | e = uentry_makeIdVariable (t); | |
1374 | } | |
1375 | ||
616915dd | 1376 | loc = uentry_whereDeclared (e); |
28bf4b0b | 1377 | |
616915dd | 1378 | /* |
28bf4b0b | 1379 | if (context_inGlobalScope ()) |
616915dd | 1380 | { |
1381 | uentry_checkParams was here! | |
1382 | } | |
28bf4b0b | 1383 | */ |
1384 | ||
616915dd | 1385 | if (ctype_isFunction (uentry_getType (e))) |
1386 | { | |
28bf4b0b | 1387 | clabstract_prepareFunction (e); |
616915dd | 1388 | } |
1389 | ||
28bf4b0b | 1390 | DPRINTF (("Superceding... %s", uentry_unparseFull (e))); |
616915dd | 1391 | e = usymtab_supEntrySrefReturn (e); |
28bf4b0b | 1392 | DPRINTF (("After superceding... %s", uentry_unparseFull (e))); |
1393 | ||
616915dd | 1394 | if (uentry_isExtern (e) && !context_inGlobalScope ()) |
1395 | { | |
1396 | voptgenerror | |
1397 | (FLG_NESTEDEXTERN, | |
1398 | message ("Declaration using extern inside function scope: %q", | |
1399 | uentry_unparse (e)), | |
1400 | g_currentloc); | |
1401 | ||
1402 | uentry_setDefined (e, fileloc_getExternal ()); | |
1403 | sRef_setDefined (uentry_getSref (e), fileloc_getExternal ()); | |
1404 | } | |
28bf4b0b | 1405 | |
616915dd | 1406 | if (uentry_isFunction (e)) |
1407 | { | |
28bf4b0b | 1408 | if (!context_inXHFile ()) |
1409 | { | |
1410 | checkParamNames (e); | |
1411 | } | |
616915dd | 1412 | } |
28bf4b0b | 1413 | |
1414 | if (uentry_isVar (e) && uentry_isCheckedUnknown (e)) | |
616915dd | 1415 | { |
1416 | sRef sr = uentry_getSref (e); | |
28bf4b0b | 1417 | |
616915dd | 1418 | if (sRef_isLocalVar (sr)) |
1419 | { | |
1420 | if (context_getFlag (FLG_IMPCHECKMODINTERNALS)) | |
1421 | { | |
1422 | uentry_setCheckMod (e); | |
1423 | } | |
1424 | else | |
1425 | { | |
1426 | uentry_setUnchecked (e); | |
1427 | } | |
1428 | } | |
1429 | else if (sRef_isFileStatic (sr)) | |
1430 | { | |
1431 | if (context_getFlag (FLG_IMPCHECKEDSTRICTSTATICS)) | |
1432 | { | |
1433 | uentry_setCheckedStrict (e); | |
1434 | } | |
1435 | else if (context_getFlag (FLG_IMPCHECKEDSTATICS)) | |
1436 | { | |
1437 | uentry_setChecked (e); | |
1438 | } | |
1439 | else if (context_getFlag (FLG_IMPCHECKMODSTATICS)) | |
1440 | { | |
1441 | uentry_setCheckMod (e); | |
1442 | } | |
1443 | else | |
1444 | { | |
1445 | ; | |
1446 | } | |
1447 | } | |
1448 | else /* real global */ | |
1449 | { | |
1450 | llassert (sRef_isRealGlobal (sr)); | |
28bf4b0b | 1451 | |
616915dd | 1452 | if (context_getFlag (FLG_IMPCHECKEDSTRICTGLOBALS)) |
1453 | { | |
1454 | uentry_setCheckedStrict (e); | |
1455 | } | |
1456 | else if (context_getFlag (FLG_IMPCHECKEDGLOBALS)) | |
1457 | { | |
1458 | uentry_setChecked (e); | |
1459 | } | |
1460 | else if (context_getFlag (FLG_IMPCHECKMODGLOBALS)) | |
1461 | { | |
1462 | uentry_setCheckMod (e); | |
1463 | } | |
1464 | else | |
1465 | { | |
1466 | ; | |
1467 | } | |
1468 | } | |
1469 | } | |
1470 | } | |
1471 | } | |
1472 | else if (ProcessingTypedef) | |
1473 | { | |
1474 | ctype ct = idDecl_getCtype (t); | |
1475 | uentry e; | |
28bf4b0b | 1476 | |
616915dd | 1477 | DPRINTF (("Processing typedef: %s", ctype_unparse (ct))); |
1478 | ||
1479 | e = uentry_makeIdDatatype (t); | |
1480 | ||
1481 | if (cstring_equal (idDecl_getName (t), context_getBoolName ())) { | |
1482 | ctype rt = ctype_realType (ct); | |
1483 | ||
1484 | if (ctype_isEnum (rt)) { | |
1485 | ; | |
1486 | } else { | |
1487 | if (!(ctype_isInt (rt) | |
1488 | || ctype_isUnknown (rt) | |
1489 | || ctype_isChar (rt))) { | |
1490 | (void) llgenerror | |
1491 | (FLG_BOOLTYPE, | |
1492 | message ("Boolean type %s defined using non-standard type %s (integral, char or enum type expected)", | |
1493 | context_getBoolName (), | |
1494 | ctype_unparse (ct)), | |
1495 | uentry_whereLast (e)); | |
1496 | } | |
1497 | ||
1498 | ct = ctype_bool; | |
1499 | uentry_setType (e, ct); | |
1500 | } | |
1501 | } | |
1502 | ||
1503 | reflectStorageClass (e); | |
1504 | checkTypeDecl (e, ct); | |
1505 | ||
1506 | e = usymtab_supReturnTypeEntry (e); | |
616915dd | 1507 | } |
1508 | else | |
1509 | { | |
1510 | llparseerror (message ("Suspect missing struct or union keyword: %q", | |
1511 | idDecl_unparse (t))); | |
1512 | } | |
1513 | ||
1514 | } | |
1515 | ||
1516 | /* | |
1517 | ** moved from grammar | |
1518 | */ | |
1519 | ||
1520 | static idDecl fixStructDecl (/*@returned@*/ idDecl d) | |
1521 | { | |
1522 | if (ctype_isVisiblySharable (idDecl_getCtype (d)) | |
1523 | && context_getFlag (FLG_STRUCTIMPONLY)) | |
1524 | { | |
1525 | if (!qualList_hasAliasQualifier (idDecl_getQuals (d))) | |
1526 | { | |
1527 | if (qualList_hasExposureQualifier (idDecl_getQuals (d))) | |
1528 | { | |
1529 | idDecl_addQual (d, qual_createDependent ()); | |
1530 | } | |
1531 | else | |
1532 | { | |
1533 | idDecl_addQual (d, qual_createImpOnly ()); | |
1534 | } | |
1535 | } | |
1536 | } | |
1537 | ||
1538 | return d; | |
1539 | } | |
1540 | ||
1541 | ctype | |
1542 | declareUnnamedStruct (/*@only@*/ uentryList f) | |
1543 | { | |
28bf4b0b | 1544 | DPRINTF (("Unnamed struct: %s", uentryList_unparse (f))); |
1545 | ||
616915dd | 1546 | if (context_maybeSet (FLG_NUMSTRUCTFIELDS)) |
1547 | { | |
1548 | int num = uentryList_size (f); | |
1549 | int max = context_getValue (FLG_NUMSTRUCTFIELDS); | |
1550 | ||
1551 | if (num > max) | |
1552 | { | |
1553 | voptgenerror | |
1554 | (FLG_NUMSTRUCTFIELDS, | |
1555 | message ("Structure declared with %d fields " | |
1556 | "(limit is set to %d)", | |
1557 | num, max), | |
1558 | g_currentloc); | |
1559 | } | |
1560 | } | |
1561 | ||
1562 | return (ctype_createUnnamedStruct (f)); | |
1563 | } | |
1564 | ||
1565 | ctype | |
1566 | declareUnnamedUnion (/*@only@*/ uentryList f) | |
1567 | { | |
1568 | if (context_maybeSet (FLG_NUMSTRUCTFIELDS)) | |
1569 | { | |
1570 | int num = uentryList_size (f); | |
1571 | int max = context_getValue (FLG_NUMSTRUCTFIELDS); | |
1572 | ||
1573 | if (num > max) | |
1574 | { | |
1575 | voptgenerror | |
1576 | (FLG_NUMSTRUCTFIELDS, | |
1577 | message ("Union declared with %d fields " | |
1578 | "(limit is set to %d)", | |
1579 | num, max), | |
1580 | g_currentloc); | |
1581 | } | |
1582 | } | |
1583 | ||
1584 | return (ctype_createUnnamedUnion (f)); | |
1585 | } | |
1586 | ||
1587 | ctype declareStruct (cstring id, /*@only@*/ uentryList f) | |
1588 | { | |
1589 | ctype ct; | |
1590 | uentry ue; | |
1591 | int num = uentryList_size (f); | |
1592 | ||
28bf4b0b | 1593 | DPRINTF (("Declare struct: %s / %s", id, uentryList_unparse (f))); |
1594 | ||
616915dd | 1595 | ct = ctype_createStruct (cstring_copy (id), f); |
28bf4b0b | 1596 | |
1597 | DPRINTF (("Ctype: %s", ctype_unparse (ct))); | |
1598 | ||
616915dd | 1599 | ue = uentry_makeStructTagLoc (id, ct); |
1600 | ||
28bf4b0b | 1601 | DPRINTF (("ue: %s", uentry_unparseFull (ue))); |
1602 | ||
616915dd | 1603 | if (context_maybeSet (FLG_NUMSTRUCTFIELDS)) |
1604 | { | |
1605 | int max = context_getValue (FLG_NUMSTRUCTFIELDS); | |
1606 | ||
1607 | if (num > max) | |
1608 | { | |
1609 | voptgenerror | |
1610 | (FLG_NUMSTRUCTFIELDS, | |
1611 | message ("Structure %q declared with %d fields " | |
1612 | "(limit is set to %d)", | |
1613 | uentry_getName (ue), num, max), | |
1614 | uentry_whereLast (ue)); | |
1615 | } | |
1616 | } | |
1617 | ||
1618 | return (usymtab_supTypeEntry (ue)); | |
1619 | } | |
1620 | ||
1621 | ctype declareUnion (cstring id, uentryList f) | |
1622 | { | |
1623 | ctype ct; | |
1624 | uentry ue; | |
1625 | int num = uentryList_size (f); | |
1626 | ||
1627 | ct = ctype_createUnion (cstring_copy (id), f); | |
1628 | ue = uentry_makeUnionTagLoc (id, ct); | |
1629 | ||
1630 | if (context_maybeSet (FLG_NUMSTRUCTFIELDS)) | |
1631 | { | |
1632 | int max = context_getValue (FLG_NUMSTRUCTFIELDS); | |
1633 | ||
1634 | if (num > max) | |
1635 | { | |
1636 | voptgenerror | |
1637 | (FLG_NUMSTRUCTFIELDS, | |
1638 | message ("Union %q declared with %d fields " | |
1639 | "(limit is set to %d)", | |
1640 | uentry_getName (ue), num, max), | |
1641 | uentry_whereLast (ue)); | |
1642 | } | |
1643 | } | |
1644 | ||
1645 | return (usymtab_supTypeEntry (ue)); | |
1646 | } | |
1647 | ||
1648 | ctype handleStruct (/*@only@*/ cstring id) | |
1649 | { | |
1650 | if (usymtab_existsStructTag (id)) | |
1651 | { | |
1652 | ctype ct = uentry_getAbstractType (usymtab_lookupStructTag (id)); | |
1653 | ||
1654 | cstring_free (id); | |
1655 | return ct; | |
1656 | } | |
1657 | else | |
1658 | { | |
1659 | return (ctype_createForwardStruct (id)); | |
1660 | } | |
1661 | } | |
1662 | ||
1663 | ctype handleUnion (/*@only@*/ cstring id) | |
1664 | { | |
1665 | if (usymtab_existsUnionTag (id)) | |
1666 | { | |
1667 | ctype ret = uentry_getAbstractType (usymtab_lookupUnionTag (id)); | |
1668 | cstring_free (id); | |
1669 | return (ret); | |
1670 | } | |
1671 | else | |
1672 | { | |
1673 | return (ctype_createForwardUnion (id)); | |
1674 | } | |
1675 | } | |
1676 | ||
1677 | ctype | |
1678 | handleEnum (cstring id) | |
1679 | { | |
1680 | if (usymtab_existsEnumTag (id)) | |
1681 | { | |
1682 | ctype ret = uentry_getAbstractType (usymtab_lookupEnumTag (id)); | |
1683 | cstring_free (id); | |
1684 | return ret; | |
1685 | } | |
1686 | else | |
1687 | { | |
1688 | return (declareEnum (id, enumNameList_new ())); | |
1689 | } | |
1690 | } | |
1691 | ||
1692 | bool processingIterVars (void) | |
1693 | { | |
1694 | return ProcessingIterVars; | |
1695 | } | |
1696 | ||
1697 | uentry getCurrentIter (void) | |
1698 | { | |
1699 | return currentIter; | |
1700 | } | |
1701 | ||
1702 | static bool flipOldStyle = FALSE; | |
1703 | static bool flipNewStyle = TRUE; | |
1704 | ||
1705 | void setFlipOldStyle () { flipOldStyle = TRUE; } | |
1706 | bool isFlipOldStyle () { return flipOldStyle; } | |
1707 | bool isNewStyle () { return flipNewStyle; } | |
1708 | void setNewStyle () { flipNewStyle = TRUE; } | |
1709 | ||
1710 | /*@dependent@*/ uentryList handleParamIdList (/*@dependent@*/ uentryList params) | |
1711 | { | |
1712 | int paramno = 0; | |
1713 | ||
1714 | /* | |
1715 | ** this is a really YUCKY hack to handle old style | |
1716 | ** declarations. | |
1717 | */ | |
1718 | ||
1719 | voptgenerror (FLG_OLDSTYLE, | |
1720 | cstring_makeLiteral ("Old style function declaration"), | |
1721 | g_currentloc); | |
1722 | ||
1723 | uentryList_elements (params, current) | |
1724 | { | |
1725 | uentry_setParam (current); | |
1726 | uentry_setSref (current, sRef_makeParam (paramno, ctype_unknown)); | |
1727 | paramno++; | |
1728 | } end_uentryList_elements; | |
1729 | ||
1730 | setGenericParamList (params); | |
1731 | g_expectingTypeName = TRUE; | |
1732 | ||
1733 | return params; | |
1734 | } | |
1735 | ||
1736 | /*@dependent@*/ uentryList handleParamTypeList (/*@returned@*/ uentryList params) | |
1737 | { | |
1738 | if (flipOldStyle) | |
1739 | { | |
1740 | uentryList_fixMissingNames (params); | |
1741 | ||
1742 | voptgenerror (FLG_OLDSTYLE, | |
1743 | cstring_makeLiteral ("Old style function declaration."), | |
1744 | g_currentloc); | |
1745 | ||
1746 | setGenericParamList (params); | |
1747 | flipOldStyle = FALSE; | |
1748 | g_expectingTypeName = TRUE; | |
1749 | } | |
1750 | ||
1751 | return (params); | |
1752 | } | |
1753 | ||
1754 | void | |
1755 | doVaDcl () | |
1756 | { | |
1757 | ctype c = ctype_unknown; | |
1758 | cstring id = cstring_makeLiteral ("va_alist"); | |
1759 | uentry e; | |
1760 | ||
1761 | if (ProcessingParams) | |
1762 | { | |
1763 | int i = uentryList_lookupRealName (saveParamList, id); | |
1764 | ||
1765 | if (i >= 0) | |
1766 | { | |
1767 | e = uentry_makeVariableSrefParam (id, c, sRef_makeParam (i, c)); | |
1768 | } | |
1769 | else | |
1770 | { | |
1771 | e = uentry_undefined; /* suppress gcc message */ | |
1772 | llfatalerrorLoc (cstring_makeLiteral ("va_dcl used without va_alist")); | |
1773 | } | |
1774 | } | |
1775 | else | |
1776 | { | |
1777 | llerror (FLG_SYNTAX, cstring_makeLiteral ("va_dcl used outside of function declaration")); | |
1778 | e = uentry_makeVariableLoc (id, c); | |
1779 | } | |
1780 | ||
1781 | cstring_free (id); | |
1782 | uentry_setUsed (e, g_currentloc); | |
1783 | usymtab_supEntrySref (e); | |
1784 | } | |
1785 | ||
28bf4b0b | 1786 | /*@exposed@*/ sRef modListPointer (/*@exposed@*/ sRef s) |
616915dd | 1787 | { |
1788 | ctype ct = sRef_getType (s); | |
1789 | ctype rt = ctype_realType (ct); | |
1790 | ||
1791 | if (ctype_isAP (rt)) | |
1792 | { | |
1793 | if (context_inHeader () && ctype_isAbstract (ct)) | |
1794 | { | |
1795 | voptgenerror | |
1796 | (FLG_ABSTRACT, | |
1797 | message | |
1798 | ("Modifies clause in header file dereferences abstract " | |
1799 | "type %s (interface modifies clause should not depend " | |
1800 | "on or expose type representation): %q", | |
1801 | ctype_unparse (ct), | |
1802 | sRef_unparse (s)), | |
1803 | g_currentloc); | |
1804 | } | |
1805 | ||
1806 | return (sRef_constructPointer (s)); | |
1807 | } | |
1808 | else | |
1809 | { | |
1810 | if (ctype_isKnown (rt)) | |
1811 | { | |
1812 | voptgenerror | |
1813 | (FLG_TYPE, | |
1814 | message ("Implementation modifies clause dereferences non-pointer (type %s): %q", | |
1815 | ctype_unparse (rt), | |
1816 | sRef_unparse (s)), | |
1817 | g_currentloc); | |
1818 | } | |
1819 | ||
1820 | return s; | |
1821 | } | |
1822 | } | |
1823 | ||
1824 | /*@exposed@*/ sRef modListFieldAccess (sRef s, cstring f) | |
1825 | { | |
1826 | ctype ct = sRef_getType (s); | |
1827 | ctype rt = ctype_realType (ct); | |
1828 | ||
1829 | if (ctype_isStructorUnion (rt)) | |
1830 | { | |
1831 | uentry tf = uentryList_lookupField (ctype_getFields (rt), f); | |
1832 | ||
1833 | if (uentry_isUndefined (tf)) | |
1834 | { | |
1835 | voptgenerror (FLG_TYPE, | |
1836 | message ("Modifies list accesses non-existent " | |
1837 | "field %s of %t: %q", f, ct, | |
1838 | sRef_unparse (s)), | |
1839 | g_currentloc); | |
1840 | ||
1841 | cstring_free (f); | |
1842 | return sRef_undefined; | |
1843 | } | |
1844 | else | |
1845 | { | |
1846 | if (ctype_isAbstract (ct) && context_inHeader ()) | |
1847 | { | |
1848 | voptgenerror | |
1849 | (FLG_ABSTRACT, | |
1850 | message | |
1851 | ("Modifies clause in header file accesses abstract " | |
1852 | "type %s (interface modifies clause should not depend " | |
1853 | "on or expose type representation): %q", | |
1854 | ctype_unparse (ct), | |
1855 | sRef_unparse (s)), | |
1856 | g_currentloc); | |
1857 | } | |
1858 | } | |
1859 | ||
1860 | cstring_markOwned (f); | |
1861 | return (sRef_makeField (s, f)); | |
1862 | } | |
1863 | else | |
1864 | { | |
1865 | voptgenerror | |
1866 | (FLG_TYPE, | |
1867 | message ("Modifies clause dereferences non-pointer (type %s): %q", | |
1868 | ctype_unparse (rt), | |
1869 | sRef_unparse (s)), | |
1870 | g_currentloc); | |
1871 | ||
1872 | cstring_free (f); | |
1873 | return s; | |
1874 | } | |
1875 | } | |
1876 | ||
28bf4b0b | 1877 | /*@dependent@*/ sRef clabstract_unrecognizedGlobal (cstring s) |
616915dd | 1878 | { |
1879 | if (cstring_equalLit (s, "nothing")) | |
1880 | { | |
1881 | return sRef_makeNothing (); | |
1882 | } | |
1883 | else if (cstring_equalLit (s, "internalState")) | |
1884 | { | |
1885 | return sRef_makeInternalState (); | |
1886 | } | |
1887 | else if (cstring_equalLit (s, "fileSystem") | |
1888 | || cstring_equalLit (s, "systemState")) | |
1889 | { | |
1890 | return sRef_makeSystemState (); | |
1891 | } | |
1892 | else | |
1893 | { | |
1894 | voptgenerror | |
1895 | (FLG_UNRECOG, | |
1896 | message ("Unrecognized identifier in globals list: %s", s), | |
1897 | g_currentloc); | |
1898 | ||
1899 | return sRef_undefined; | |
1900 | } | |
1901 | } | |
1902 | ||
1903 | /*@exposed@*/ sRef modListArrowAccess (sRef s, cstring f) | |
1904 | { | |
1905 | ctype ct = sRef_getType (s); | |
1906 | ctype rt = ctype_realType (ct); | |
1907 | ||
1908 | if (ctype_isRealPointer (rt)) | |
1909 | { | |
1910 | ctype b = ctype_baseArrayPtr (rt); | |
1911 | ctype rb = ctype_realType (b); | |
1912 | ||
1913 | if (ctype_isStructorUnion (rb)) | |
1914 | { | |
1915 | uentry tf = uentryList_lookupField (ctype_getFields (rb), f); | |
1916 | ||
1917 | if (uentry_isUndefined (tf)) | |
1918 | { | |
1919 | voptgenerror (FLG_TYPE, | |
1920 | message ("Modifies list arrow accesses non-existent " | |
1921 | "field %s of %t: %q", f, b, | |
1922 | sRef_unparse (s)), | |
1923 | g_currentloc); | |
1924 | ||
1925 | cstring_free (f); | |
1926 | return sRef_undefined; | |
1927 | } | |
1928 | else | |
1929 | { | |
1930 | if (context_inHeader ()) | |
1931 | { | |
1932 | if (ctype_isAbstract (b)) | |
1933 | { | |
1934 | voptgenerror | |
1935 | (FLG_ABSTRACT, | |
1936 | message | |
1937 | ("Modifies clause in header file arrow accesses abstract " | |
1938 | "type %s (interface modifies clause should not depend " | |
1939 | "on or expose type representation): %q", | |
1940 | ctype_unparse (b), | |
1941 | sRef_unparse (s)), | |
1942 | g_currentloc); | |
1943 | } | |
1944 | } | |
1945 | else | |
1946 | { | |
1947 | if (ctype_isAbstract (ct)) | |
1948 | { | |
1949 | voptgenerror | |
1950 | (FLG_ABSTRACT, | |
1951 | message | |
1952 | ("Modifies clause in header file arrow accesses abstract " | |
1953 | "type %s (interface modifies clause should not depend " | |
1954 | "on or expose type representation): %q", | |
1955 | ctype_unparse (ct), | |
1956 | sRef_unparse (s)), | |
1957 | g_currentloc); | |
1958 | } | |
1959 | } | |
1960 | } | |
1961 | ||
1962 | cstring_markOwned (f); | |
1963 | return (sRef_makeArrow (s, f)); | |
1964 | } | |
1965 | else | |
1966 | { | |
1967 | voptgenerror | |
1968 | (FLG_TYPE, | |
1969 | message ("Modifies clause arrow accesses pointer to " | |
1970 | "non-structure (type %s): %q", | |
1971 | ctype_unparse (rt), | |
1972 | sRef_unparse (s)), | |
1973 | g_currentloc); | |
1974 | } | |
1975 | } | |
1976 | else | |
1977 | { | |
1978 | voptgenerror | |
1979 | (FLG_TYPE, | |
1980 | message ("Modifies clause arrow accesses non-pointer (type %s): %q", | |
1981 | ctype_unparse (rt), | |
1982 | sRef_unparse (s)), | |
1983 | g_currentloc); | |
1984 | } | |
1985 | ||
1986 | cstring_free (f); | |
1987 | return s; | |
1988 | } | |
1989 | ||
28bf4b0b | 1990 | sRef checkStateClausesId (uentry ue) |
616915dd | 1991 | { |
1992 | cstring s = uentry_rawName (ue); | |
1993 | ||
28bf4b0b | 1994 | if (sRef_isFileOrGlobalScope (uentry_getSref (ue))) |
616915dd | 1995 | { |
1996 | voptgenerror | |
28bf4b0b | 1997 | (FLG_COMMENTERROR, |
616915dd | 1998 | message ("Global variable %s used special clause. (Global variables " |
1999 | "are not recognized in special clauses. If there is " | |
2000 | "sufficient interest in support for this, it may be " | |
2001 | "added to a future release. Send mail to " | |
2002 | "lclint@cs.virginia.edu.)", | |
2003 | s), | |
2004 | g_currentloc); | |
2005 | ||
2006 | return sRef_undefined; | |
2007 | } | |
2008 | else | |
2009 | { | |
2010 | if (cstring_equalLit (s, "result")) | |
2011 | { | |
2012 | if (optgenerror | |
2013 | (FLG_SYNTAX, | |
2014 | message ("Special clause list uses %s which is a variable and has special " | |
2015 | "meaning in a modifies list. (Special meaning assumed.)", s), | |
2016 | g_currentloc)) | |
2017 | { | |
2018 | uentry_showWhereDeclared (ue); | |
2019 | } | |
2020 | } | |
2021 | ||
2022 | return uentry_getSref (ue); | |
2023 | } | |
2024 | } | |
9280addf | 2025 | /*drl:1/19/2001 |
2026 | oops to 1/8/2000 | |
2027 | date is wronge .. | |
2028 | don;t know what the real date is... | |
2029 | ||
2030 | */ | |
616915dd | 2031 | |
2032 | /*drl | |
2033 | added 1/8/2000 | |
2034 | based on checkSpecClausesId | |
2035 | called by grammar | |
2036 | */ | |
b37cf05e | 2037 | |
616915dd | 2038 | sRef checkbufferConstraintClausesId (uentry ue) |
2039 | { | |
2040 | cstring s = uentry_rawName (ue); | |
2041 | if (cstring_equalLit (s, "result")) | |
2042 | { | |
2043 | if (optgenerror | |
2044 | (FLG_SYNTAX, | |
2045 | message ("Special clause list uses %s which is a variable and has special " | |
2046 | "meaning in a modifies list. (Special meaning assumed.)", s), | |
2047 | g_currentloc)) | |
2048 | { | |
2049 | uentry_showWhereDeclared (ue); | |
2050 | } | |
2051 | } | |
2052 | ||
28bf4b0b | 2053 | return sRef_saveCopy( uentry_getSref (ue) ); |
616915dd | 2054 | } |
2055 | ||
2056 | void checkModifiesId (uentry ue) | |
2057 | { | |
2058 | cstring s = uentry_rawName (ue); | |
2059 | ||
2060 | if (cstring_equalLit (s, "nothing") | |
2061 | || cstring_equalLit (s, "internalState") | |
2062 | || cstring_equalLit (s, "systemState") | |
2063 | || (cstring_equalLit (s, "fileSystem"))) | |
2064 | { | |
2065 | if (optgenerror | |
2066 | (FLG_SYNTAX, | |
2067 | message ("Modifies list uses %s which is a variable and has special " | |
2068 | "meaning in a modifies list. (Special meaning assumed.)", s), | |
2069 | g_currentloc)) | |
2070 | { | |
2071 | uentry_showWhereDeclared (ue); | |
2072 | } | |
2073 | } | |
2074 | } | |
2075 | ||
2076 | /*@exposed@*/ sRef fixModifiesId (cstring s) | |
2077 | { | |
2078 | sRef ret; | |
2079 | cstring pname = makeParam (s); | |
2080 | uentry ue = usymtab_lookupSafe (pname); | |
2081 | ||
2082 | cstring_free (pname); | |
2083 | ||
2084 | if (cstring_equalLit (s, "nothing")) | |
2085 | { | |
2086 | ret = sRef_makeNothing (); | |
2087 | } | |
2088 | else if (cstring_equalLit (s, "internalState")) | |
2089 | { | |
2090 | ret = sRef_makeInternalState (); | |
2091 | } | |
2092 | else if (cstring_equalLit (s, "fileSystem") | |
2093 | || cstring_equalLit (s, "systemState")) | |
2094 | { | |
2095 | ret = sRef_makeSystemState (); | |
2096 | } | |
2097 | else | |
2098 | { | |
2099 | ret = sRef_undefined; | |
2100 | } | |
2101 | ||
2102 | if (sRef_isValid (ret)) | |
2103 | { | |
2104 | if (uentry_isValid (ue)) | |
2105 | { | |
2106 | voptgenerror | |
2107 | (FLG_SYNTAX, | |
2108 | message ("Modifies list uses %s which is a parameter and has special " | |
2109 | "meaning in a modifies list. (Special meaning assumed.)", s), | |
2110 | g_currentloc); | |
2111 | } | |
2112 | } | |
2113 | else | |
2114 | { | |
2115 | if (uentry_isValid (ue)) | |
2116 | { | |
2117 | ret = uentry_getSref (ue); | |
2118 | } | |
2119 | else | |
2120 | { | |
2121 | fileloc loc = fileloc_decColumn (g_currentloc, cstring_length (s)); | |
2122 | ret = sRef_undefined; | |
2123 | ||
2124 | voptgenerror | |
2125 | (FLG_UNRECOG, | |
2126 | message ("Unrecognized identifier in modifies comment: %s", s), | |
2127 | loc); | |
2128 | ||
2129 | fileloc_free (loc); | |
2130 | } | |
2131 | } | |
2132 | ||
2133 | return ret; | |
2134 | } | |
2135 | ||
28bf4b0b | 2136 | sRef fixStateClausesId (cstring s) |
616915dd | 2137 | { |
2138 | sRef ret; | |
2139 | cstring pname = makeParam (s); | |
2140 | uentry ue = usymtab_lookupSafe (pname); | |
2141 | ||
2142 | cstring_free (pname); | |
2143 | ||
2144 | if (cstring_equalLit (s, "result")) | |
2145 | { | |
2146 | ret = sRef_makeResult (); | |
2147 | } | |
2148 | else | |
2149 | { | |
2150 | ret = sRef_undefined; | |
2151 | } | |
2152 | ||
2153 | if (sRef_isValid (ret)) | |
2154 | { | |
2155 | if (uentry_isValid (ue)) | |
2156 | { | |
2157 | voptgenerror | |
2158 | (FLG_SYNTAX, | |
d9a28762 | 2159 | message ("Function clause uses %s which is a parameter and has special " |
2160 | "meaning in a function clause. (Special meaning assumed.)", s), | |
616915dd | 2161 | g_currentloc); |
2162 | } | |
2163 | } | |
2164 | else | |
2165 | { | |
2166 | if (uentry_isValid (ue)) | |
2167 | { | |
2168 | ret = uentry_getSref (ue); | |
2169 | ||
28bf4b0b | 2170 | if (sRef_isFileOrGlobalScope (ret)) |
616915dd | 2171 | { |
2172 | voptgenerror | |
2173 | (FLG_SYNTAX, | |
d9a28762 | 2174 | message ("Global variable %s used in function clause. (Global variables " |
2175 | "are not recognized in function clauses. If there is " | |
616915dd | 2176 | "sufficient interest in support for this, it may be " |
2177 | "added to a future release. Send mail to " | |
2178 | "lclint@cs.virginia.edu.)", | |
2179 | s), | |
2180 | g_currentloc); | |
2181 | ||
2182 | ret = sRef_undefined; | |
2183 | } | |
2184 | } | |
2185 | else | |
2186 | { | |
2187 | fileloc loc = fileloc_decColumn (g_currentloc, cstring_length (s)); | |
2188 | ret = sRef_undefined; | |
2189 | ||
2190 | voptgenerror | |
2191 | (FLG_UNRECOG, | |
d9a28762 | 2192 | message ("Unrecognized identifier in function clause: %s", s), |
616915dd | 2193 | loc); |
2194 | ||
2195 | fileloc_free (loc); | |
2196 | } | |
2197 | } | |
2198 | ||
2199 | return ret; | |
2200 | } | |
2201 | ||
28bf4b0b | 2202 | sRef modListArrayFetch (/*@exposed@*/ sRef s, /*@unused@*/ sRef mexp) |
616915dd | 2203 | { |
2204 | ctype ct = sRef_getType (s); | |
2205 | ctype rt = ctype_realType (ct); | |
2206 | ||
2207 | if (ctype_isAP (rt)) | |
2208 | { | |
2209 | if (context_inHeader () && ctype_isAbstract (ct)) | |
2210 | { | |
2211 | voptgenerror | |
2212 | (FLG_ABSTRACT, | |
2213 | message | |
2214 | ("Modifies clause in header file indexes abstract " | |
2215 | "type %s (interface modifies clause should not depend " | |
2216 | "on or expose type representation): %q", | |
2217 | ctype_unparse (ct), | |
2218 | sRef_unparse (s)), | |
2219 | g_currentloc); | |
2220 | } | |
2221 | ||
2222 | return (sRef_makeAnyArrayFetch (s)); | |
2223 | } | |
2224 | else | |
2225 | { | |
2226 | voptgenerror | |
2227 | (FLG_TYPE, | |
2228 | message | |
2229 | ("Implementation modifies clause uses array fetch on non-array (type %s): %q", | |
2230 | ctype_unparse (ct), sRef_unparse (s)), | |
2231 | g_currentloc); | |
2232 | return s; | |
2233 | } | |
2234 | } | |
2235 | ||
28bf4b0b | 2236 | static void clabstract_prepareFunction (uentry e) |
2237 | { | |
2238 | uentry_checkParams (e); | |
2239 | DPRINTF (("After prepare: %s", uentry_unparseFull (e))); | |
2240 | } | |
2241 | ||
2242 | sRef clabstract_checkGlobal (exprNode e) | |
2243 | { | |
2244 | sRef s; | |
2245 | llassert (exprNode_isInitializer (e)); | |
2246 | ||
2247 | s = exprNode_getSref (e); | |
2248 | DPRINTF (("Initializer: %s -> %s", exprNode_unparse (e), sRef_unparse (s))); | |
2249 | ||
2250 | exprNode_free (e); | |
2251 | return sRef_copy (s); | |
2252 | } | |
2253 | ||
616915dd | 2254 | |
2255 | ||
2256 | ||
2257 | ||
2258 | ||
2259 | ||
2260 |