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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 | |
dc92450f | 57 | /*@only@*/ static constraintList fcnEnsuresConstraints = NULL; |
616915dd | 58 | /*end drl*/ |
59 | ||
470b7798 | 60 | /*drl */ |
2934b455 | 61 | static /*@only@*/ constraintList implicitFcnConstraints = NULL; |
470b7798 | 62 | |
63 | ||
616915dd | 64 | //static constraintList fcnPreConditions = NULL; |
65 | ||
28bf4b0b | 66 | static void clabstract_prepareFunction (uentry p_e) /*@modifies p_e@*/ ; |
616915dd | 67 | static bool fcnNoGlobals = FALSE; |
68 | static bool ProcessingVars = FALSE; | |
69 | static bool ProcessingParams = FALSE; | |
70 | static bool ProcessingGlobals = FALSE; | |
71 | static bool ProcessingTypedef = FALSE; | |
72 | static bool ProcessingIterVars = FALSE; | |
73 | static /*@only@*/ qtype processingType = qtype_undefined; | |
74 | static uentry currentIter = uentry_undefined; | |
616915dd | 75 | static /*@dependent@*/ uentryList saveParamList; /* for old style functions */ |
76 | static /*@owned@*/ uentry saveFunction = uentry_undefined; | |
77 | static int saveIterParamNo; | |
78 | static idDecl fixStructDecl (/*@returned@*/ idDecl p_d); | |
79 | static void checkTypeDecl (uentry p_e, ctype p_rep); | |
80 | static /*@dependent@*/ fileloc saveStoreLoc = fileloc_undefined; | |
81 | static storageClassCode storageClass = SCNONE; | |
82 | static void declareEnumList (/*@temp@*/ enumNameList p_el, ctype p_c, fileloc p_loc); | |
83 | static void resetGlobals (void); | |
28bf4b0b | 84 | static /*@null@*/ qual specialFunctionCode; |
616915dd | 85 | static bool argsUsed = FALSE; |
86 | ||
28bf4b0b | 87 | extern void clabstract_initMod () |
88 | { | |
89 | specialFunctionCode = qual_createUnknown (); | |
90 | DPRINTF (("Initialized: %s", qual_unparse (specialFunctionCode))); | |
91 | } | |
92 | ||
616915dd | 93 | static bool hasSpecialCode (void) |
94 | { | |
28bf4b0b | 95 | return (!qual_isUnknown (specialFunctionCode)); |
616915dd | 96 | } |
97 | ||
98 | extern void setArgsUsed (void) | |
99 | { | |
100 | if (argsUsed) | |
101 | { | |
102 | voptgenerror | |
103 | (FLG_SYNTAX, | |
104 | cstring_makeLiteral ("Multiple ARGSUSED comments for one function"), | |
105 | g_currentloc); | |
106 | } | |
107 | ||
108 | argsUsed = TRUE; | |
109 | } | |
110 | ||
111 | static void reflectArgsUsed (uentry ue) | |
112 | { | |
113 | if (argsUsed) | |
114 | { | |
115 | if (uentry_isFunction (ue)) | |
116 | { | |
117 | uentryList params = uentry_getParams (ue); | |
118 | ||
119 | uentryList_elements (params, el) | |
120 | { | |
121 | uentry_setUsed (el, fileloc_undefined); | |
122 | } end_uentryList_elements ; | |
123 | } | |
124 | ||
125 | argsUsed = FALSE; | |
126 | } | |
127 | } | |
128 | ||
129 | extern void setSpecialFunction (qual qu) | |
130 | { | |
28bf4b0b | 131 | if (!qual_isUnknown (specialFunctionCode)) |
616915dd | 132 | { |
133 | voptgenerror (FLG_SYNTAX, | |
134 | message ("Multiple special function codes: %s, %s " | |
135 | "(first code is ignored)", | |
136 | qual_unparse (specialFunctionCode), | |
137 | qual_unparse (qu)), | |
138 | g_currentloc); | |
139 | } | |
140 | ||
141 | specialFunctionCode = qu; | |
142 | } | |
143 | ||
144 | static void reflectSpecialCode (uentry ue) | |
145 | { | |
28bf4b0b | 146 | if (qual_isUnknown (specialFunctionCode)) { |
147 | ; | |
148 | } else if (qual_isPrintfLike (specialFunctionCode)) { | |
149 | uentry_setPrintfLike (ue); | |
150 | } else if (qual_isScanfLike (specialFunctionCode)) { | |
151 | uentry_setScanfLike (ue); | |
152 | } else if (qual_isMessageLike (specialFunctionCode)) { | |
153 | uentry_setMessageLike (ue); | |
154 | } else { | |
155 | BADBRANCH; | |
156 | } | |
616915dd | 157 | |
28bf4b0b | 158 | specialFunctionCode = qual_createUnknown (); |
616915dd | 159 | } |
160 | ||
161 | static void resetStorageClass (void) | |
162 | { | |
163 | qtype_free (processingType); | |
164 | processingType = qtype_undefined; | |
165 | storageClass = SCNONE; | |
166 | } | |
167 | ||
28bf4b0b | 168 | /*drl 6-25-01 |
169 | used to be reflectModGlobs | |
170 | changed to reflectBufferConstraint | |
171 | and removed buffer constraint stuff | |
172 | to merge with other code tree. | |
173 | */ | |
616915dd | 174 | |
28bf4b0b | 175 | static void reflectBufferConstraint (uentry ue) |
176 | { | |
616915dd | 177 | /*drl added*/ |
28bf4b0b | 178 | if ( constraintList_isDefined(fcnConstraints) ) |
616915dd | 179 | { |
180 | uentry_setPreconditions (ue, fcnConstraints); | |
181 | fcnConstraints = constraintList_undefined; | |
182 | } | |
183 | ||
28bf4b0b | 184 | if ( constraintList_isDefined(fcnEnsuresConstraints) ) |
616915dd | 185 | { |
186 | uentry_setPostconditions (ue, fcnEnsuresConstraints); | |
187 | fcnEnsuresConstraints = constraintList_undefined; | |
188 | } | |
189 | /*end drl*/ | |
616915dd | 190 | } |
191 | ||
192 | static void reflectStorageClass (uentry u) | |
193 | { | |
194 | if (storageClass == SCSTATIC) | |
195 | { | |
196 | uentry_setStatic (u); | |
197 | } | |
198 | else if (storageClass == SCEXTERN) | |
199 | { | |
200 | uentry_setExtern (u); | |
201 | } | |
202 | else | |
203 | { | |
204 | ; /* no storage class */ | |
205 | } | |
206 | ||
207 | } | |
208 | ||
209 | void storeLoc () | |
210 | { | |
211 | saveStoreLoc = g_currentloc; | |
212 | } | |
213 | ||
214 | void setFunctionNoGlobals (void) | |
215 | { | |
616915dd | 216 | fcnNoGlobals = TRUE; |
217 | } | |
218 | ||
616915dd | 219 | /*drl |
220 | */ | |
221 | constraintList getFunctionConstraints (void) | |
222 | { | |
223 | return constraintList_copy (fcnConstraints); | |
224 | } | |
225 | ||
226 | ||
227 | constraintList getEnsuresConstraints (void) | |
228 | { | |
229 | return constraintList_copy (fcnEnsuresConstraints); | |
230 | } | |
231 | ||
232 | void setEnsuresConstraints (constraintList c) | |
233 | { | |
28bf4b0b | 234 | if (constraintList_isDefined(fcnEnsuresConstraints) ) |
bb25bea6 | 235 | constraintList_free(fcnEnsuresConstraints); |
28bf4b0b | 236 | |
237 | DPRINTF(( message("Setting ensures constraints to %q", | |
238 | constraintList_print(c) ) )); | |
239 | ||
616915dd | 240 | fcnEnsuresConstraints = constraintList_copy (c); |
241 | } | |
242 | ||
243 | void setFunctionConstraints (constraintList c) | |
244 | { | |
28bf4b0b | 245 | if (constraintList_isDefined(fcnConstraints) ) |
bb25bea6 | 246 | constraintList_free(fcnConstraints); |
28bf4b0b | 247 | |
248 | DPRINTF(( message("Setting requires constraints to %q", | |
249 | constraintList_print(c) ) )); | |
250 | ||
251 | ||
616915dd | 252 | fcnConstraints = constraintList_copy (c); |
253 | } | |
254 | /* end drl*/ | |
255 | ||
616915dd | 256 | static void reflectGlobalQualifiers (sRef sr, qualList quals) |
257 | { | |
28bf4b0b | 258 | DPRINTF (("Reflect global qualifiers: %s / %s", |
259 | sRef_unparseFull (sr), qualList_unparse (quals))); | |
260 | ||
616915dd | 261 | qualList_elements (quals, qel) |
262 | { | |
263 | if (qual_isGlobalQual (qel)) /* undef, killed */ | |
264 | { | |
265 | sstate oldstate = sRef_getDefState (sr); | |
266 | sstate defstate = sstate_fromQual (qel); | |
267 | ||
268 | if ((oldstate == SS_UNDEFGLOB && defstate == SS_KILLED) | |
269 | || (oldstate == SS_KILLED && defstate == SS_UNDEFGLOB)) | |
270 | { | |
271 | defstate = SS_UNDEFKILLED; | |
272 | } | |
273 | else | |
274 | { | |
275 | ; /* any errors? */ | |
276 | } | |
277 | ||
278 | sRef_setDefState (sr, defstate, fileloc_undefined); | |
28bf4b0b | 279 | DPRINTF (("State: %s", sRef_unparseFull (sr))); |
616915dd | 280 | } |
281 | else if (qual_isAllocQual (qel)) /* out, partial, reldef, etc. */ | |
282 | { | |
283 | ctype realType = sRef_getType (sr); | |
284 | sstate defstate = sstate_fromQual (qel); | |
285 | ||
286 | if (qual_isRelDef (qel)) | |
287 | { | |
288 | ; /* okay anywhere */ | |
289 | } | |
290 | else | |
291 | { | |
292 | if (!ctype_isAP (realType) | |
293 | && !ctype_isSU (realType) | |
294 | && !ctype_isUnknown (realType) | |
295 | && !ctype_isAbstract (sRef_getType (sr))) | |
296 | { | |
297 | llerror | |
298 | (FLG_SYNTAX, | |
299 | message ("Qualifier %s used on non-pointer or struct: %q", | |
300 | qual_unparse (qel), sRef_unparse (sr))); | |
301 | ||
302 | } | |
303 | } | |
304 | ||
305 | sRef_setDefState (sr, defstate, fileloc_undefined); | |
306 | } | |
307 | else if (qual_isNull (qel)) | |
308 | { | |
309 | sRef_setNullState (sr, NS_POSNULL, fileloc_undefined); | |
310 | } | |
311 | else if (qual_isRelNull (qel)) | |
312 | { | |
313 | sRef_setNullState (sr, NS_RELNULL, fileloc_undefined); | |
314 | } | |
315 | else if (qual_isNotNull (qel)) | |
316 | { | |
317 | sRef_setNullState (sr, NS_MNOTNULL, fileloc_undefined); | |
318 | } | |
319 | else | |
320 | { | |
321 | if (qual_isCQual (qel)) | |
322 | { | |
323 | ; /* okay */ | |
324 | } | |
325 | else | |
326 | { | |
327 | llerror (FLG_SYNTAX, | |
328 | message ("Qualifier %s cannot be used in a globals list", | |
329 | qual_unparse (qel))); | |
330 | } | |
331 | } | |
332 | } end_qualList_elements; | |
333 | } | |
334 | ||
28bf4b0b | 335 | sRef clabstract_createGlobal (sRef sr, qualList quals) |
616915dd | 336 | { |
28bf4b0b | 337 | sRef res; |
338 | ||
616915dd | 339 | if (sRef_isValid (sr)) |
340 | { | |
28bf4b0b | 341 | res = sRef_copy (sr); |
342 | DPRINTF (("Reflecting quals: %s / %s", sRef_unparse (sr), qualList_unparse (quals))); | |
343 | reflectGlobalQualifiers (res, quals); | |
344 | DPRINTF (("==> %s", sRef_unparseFull (res))); | |
616915dd | 345 | } |
28bf4b0b | 346 | else |
347 | { | |
348 | res = sRef_undefined; | |
349 | } | |
350 | ||
351 | qualList_free (quals); | |
352 | return res; | |
616915dd | 353 | } |
354 | ||
355 | extern void declareCIter (cstring name, /*@owned@*/ uentryList params) | |
356 | { | |
357 | uentry ue; | |
358 | ||
359 | ue = uentry_makeIter (name, | |
360 | ctype_makeFunction (ctype_void, params), | |
361 | fileloc_copy (g_currentloc)); | |
362 | ||
363 | usymtab_supEntry (uentry_makeEndIter (name, fileloc_copy (g_currentloc))); | |
364 | ||
28bf4b0b | 365 | reflectBufferConstraint (ue); |
616915dd | 366 | |
367 | ue = usymtab_supGlobalEntryReturn (ue); | |
368 | } | |
369 | ||
370 | extern void nextIterParam (void) | |
371 | { | |
372 | llassert (ProcessingIterVars); | |
373 | saveIterParamNo++; | |
374 | } | |
375 | ||
376 | extern int iterParamNo (void) | |
377 | { | |
378 | llassert (ProcessingIterVars); | |
379 | return saveIterParamNo; | |
380 | } | |
381 | ||
382 | /* | |
383 | ** yucky hacks to put it in the right place | |
384 | */ | |
385 | ||
386 | /*@only@*/ uentry | |
387 | makeCurrentParam (idDecl t) | |
388 | { | |
389 | uentry ue; | |
390 | ||
391 | saveStoreLoc = fileloc_undefined; | |
392 | ||
393 | /* param number unknown */ | |
394 | ||
395 | ue = uentry_makeParam (t, 0); | |
396 | return ue; | |
397 | } | |
398 | ||
399 | ctype | |
400 | declareUnnamedEnum (enumNameList el) | |
401 | { | |
402 | ctype ret = usymtab_enumEnumNameListType (el); | |
403 | ctype rt; | |
404 | uentry e; | |
405 | ||
406 | if (ctype_isDefined (ret)) | |
407 | { | |
408 | rt = ret; | |
409 | e = uentry_makeEnumTagLoc (ctype_enumTag (rt), ret); | |
410 | ||
411 | reflectStorageClass (e); | |
412 | usymtab_supGlobalEntry (e); | |
413 | ||
414 | declareEnumList (el, ret, g_currentloc); | |
415 | enumNameList_free (el); | |
416 | } | |
417 | else | |
418 | { | |
419 | ctype ct = ctype_createEnum (fakeTag (), el); | |
420 | ||
421 | e = uentry_makeEnumTagLoc (ctype_enumTag (ctype_realType (ct)), ct); | |
422 | reflectStorageClass (e); | |
423 | ||
424 | e = usymtab_supGlobalEntryReturn (e); | |
425 | rt = uentry_getAbstractType (e); | |
426 | declareEnumList (el, ct, g_currentloc); | |
427 | } | |
428 | ||
429 | return (rt); | |
430 | } | |
431 | ||
432 | ctype | |
433 | declareEnum (cstring ename, enumNameList el) | |
434 | { | |
435 | ctype cet; | |
436 | uentry e; | |
437 | ||
438 | llassert (cstring_isDefined (ename)); | |
439 | ||
440 | cet = ctype_createEnum (ename, el); | |
441 | e = uentry_makeEnumTagLoc (ename, cet); | |
442 | reflectStorageClass (e); | |
443 | e = usymtab_supGlobalEntryReturn (e); | |
444 | cet = uentry_getType (e); | |
445 | declareEnumList (el, cet, uentry_whereLast (e)); | |
446 | return (uentry_getAbstractType (e)); | |
447 | } | |
448 | ||
449 | static void | |
450 | declareEnumList (enumNameList el, ctype c, fileloc loc) | |
451 | { | |
452 | bool boolnames = FALSE; | |
453 | bool othernames = FALSE; | |
454 | ||
455 | (void) context_getSaveLocation (); /* undefine it */ | |
456 | ||
457 | if (context_maybeSet (FLG_NUMENUMMEMBERS)) | |
458 | { | |
459 | int maxnum = context_getValue (FLG_NUMENUMMEMBERS); | |
460 | int num = enumNameList_size (el); | |
461 | ||
462 | if (num > maxnum) | |
463 | { | |
464 | voptgenerror | |
465 | (FLG_NUMENUMMEMBERS, | |
466 | message ("Enumerator %s declared with %d members (limit is set to %d)", | |
467 | ctype_unparse (c), num, maxnum), | |
468 | loc); | |
469 | } | |
470 | } | |
471 | ||
472 | enumNameList_elements (el, e) | |
473 | { | |
474 | uentry ue = usymtab_lookupExposeGlob (e); | |
475 | ctype ct = uentry_getType (ue); | |
476 | ||
477 | llassert (uentry_isEnumConstant (ue)); | |
478 | ||
479 | if (ctype_isUnknown (ct)) | |
480 | { | |
481 | uentry_setType (ue, c); | |
482 | } | |
483 | else | |
484 | { | |
485 | if (cstring_equal (e, context_getFalseName ()) | |
486 | || cstring_equal (e, context_getTrueName ())) | |
487 | { | |
488 | if (othernames) | |
489 | { | |
490 | if (optgenerror | |
491 | (FLG_INCONDEFS, | |
492 | message ("Enumerator mixes boolean name (%s) with " | |
493 | "non-boolean names", | |
494 | e), | |
495 | uentry_whereLast (ue))) | |
496 | { | |
497 | ; | |
498 | } | |
499 | } | |
500 | ||
501 | boolnames = TRUE; | |
502 | uentry_setType (ue, ctype_bool); | |
503 | DPRINTF (("Set type: %s / %s", | |
504 | uentry_unparse (ue), ctype_unparse (ctype_bool))); | |
505 | } | |
506 | else | |
507 | { | |
508 | if (boolnames) | |
509 | { | |
510 | if (optgenerror | |
511 | (FLG_INCONDEFS, | |
512 | message ("Enumerator mixes boolean names (%s, %s) with " | |
513 | "non-boolean name: %s", | |
514 | context_getTrueName (), | |
515 | context_getFalseName (), | |
516 | e), | |
517 | uentry_whereLast (ue))) | |
518 | { | |
519 | ; | |
520 | } | |
521 | } | |
522 | ||
523 | othernames = TRUE; | |
524 | } | |
525 | ||
526 | if (!ctype_match (c, ct)) | |
527 | { | |
528 | if (ctype_isDirectBool (ct)) | |
529 | { | |
530 | if (cstring_equal (e, context_getFalseName ()) | |
531 | || cstring_equal (e, context_getTrueName ())) | |
532 | { | |
533 | DPRINTF (("Here we are!")); | |
534 | } | |
535 | else | |
536 | { | |
537 | if (optgenerror | |
538 | (FLG_INCONDEFS, | |
539 | message ("Enumerator member %s declared with " | |
540 | "inconsistent type: %s", | |
541 | e, ctype_unparse (c)), | |
542 | uentry_whereLast (ue))) | |
543 | { | |
544 | uentry_showWhereSpecifiedExtra | |
545 | (ue, cstring_copy (ctype_unparse (ct))); | |
546 | } | |
547 | } | |
548 | } | |
549 | else | |
550 | { | |
551 | if (optgenerror | |
552 | (FLG_INCONDEFS, | |
553 | message ("Enumerator member %s declared with " | |
554 | "inconsistent type: %s", | |
555 | e, ctype_unparse (c)), | |
556 | uentry_whereLast (ue))) | |
557 | { | |
558 | uentry_showWhereSpecifiedExtra | |
559 | (ue, cstring_copy (ctype_unparse (ct))); | |
560 | } | |
561 | } | |
562 | } | |
563 | } | |
564 | } end_enumNameList_elements; | |
565 | } | |
566 | ||
567 | static /*@dependent@*/ uentryList currentParamList; | |
568 | ||
470b7798 | 569 | /*drl added 3-28-2001*/ |
570 | /* this function takes a list of paramentar and generates a list | |
571 | of constraints. | |
572 | Currently the only constraints gnerated are MaxSet(p) >= 0 for all pointers | |
573 | */ | |
2934b455 | 574 | |
c3e695ff | 575 | void setImplictfcnConstraints (void) |
470b7798 | 576 | { |
577 | uentryList params; | |
578 | sRef s; | |
579 | constraint c; | |
580 | params = currentParamList; | |
581 | ||
28bf4b0b | 582 | if (constraintList_isDefined(implicitFcnConstraints) ) |
bb25bea6 | 583 | constraintList_free(implicitFcnConstraints); |
584 | ||
c3e695ff | 585 | implicitFcnConstraints = constraintList_makeNew(); |
470b7798 | 586 | |
587 | uentryList_elements (params, el) | |
588 | { | |
589 | DPRINTF((message("setImplictfcnConstraints doing: %s", uentry_unparse(el) ) )); | |
590 | ||
591 | s = uentry_getSref(el); | |
592 | if (sRef_isReference (s) ) | |
593 | { | |
594 | DPRINTF((message ("%s is a pointer", sRef_unparse(s) ) )); | |
595 | } | |
596 | else | |
597 | { | |
598 | DPRINTF((message ("%s is NOT a pointer", sRef_unparse(s) ) )); | |
599 | } | |
600 | /*drl 4/26/01 | |
601 | chagned this is MaxSet(s) == 0 to MaxSet(s) >= 0 */ | |
602 | ||
603 | c = constraint_makeSRefWriteSafeInt (s, 0); | |
604 | // constraint_makeSRefSetBufferSize (s, 0); | |
605 | implicitFcnConstraints = constraintList_add(implicitFcnConstraints , c); | |
606 | } | |
607 | end_uentryList_elements; | |
608 | } | |
609 | ||
2934b455 | 610 | |
611 | /*@observer@*/ constraintList getImplicitFcnConstraints (void) | |
612 | { | |
613 | return implicitFcnConstraints; | |
614 | } | |
615 | ||
616915dd | 616 | void setCurrentParams (/*@dependent@*/ uentryList ue) |
617 | { | |
618 | currentParamList = ue; | |
619 | } | |
620 | ||
621 | void clearCurrentParams (void) | |
622 | { | |
623 | currentParamList = uentryList_undefined; | |
624 | } | |
625 | ||
626 | /* | |
627 | ** requires: uentry_isFunction (e) | |
628 | ** parameter names for current function are in currentParamList | |
629 | */ | |
630 | ||
631 | static void enterFunctionParams (uentryList params) | |
632 | { | |
633 | int paramno = 0; | |
634 | ||
635 | uentryList_elements (params, current) | |
636 | { | |
637 | if (uentry_hasName (current)) | |
638 | { | |
639 | uentry_setParamNo (current, paramno); | |
640 | usymtab_supEntry (uentry_copy (current)); | |
641 | } | |
642 | ||
643 | paramno++; | |
644 | } end_uentryList_elements; | |
645 | } | |
646 | ||
647 | ||
648 | extern void enterParamsTemp (void) | |
649 | { | |
650 | usymtab_enterScope (); | |
651 | enterFunctionParams (currentParamList); | |
652 | } | |
653 | ||
654 | extern void exitParamsTemp (void) | |
655 | { | |
656 | usymtab_quietPlainExitScope (); | |
657 | } | |
658 | ||
28bf4b0b | 659 | static /*@exposed@*/ uentry clabstract_globalDeclareFunction (idDecl tid) |
616915dd | 660 | { |
661 | ctype deftype = idDecl_getCtype (tid); | |
662 | ctype rettype; | |
663 | uentry ue; | |
664 | ||
665 | DPRINTF (("Global function: %s", idDecl_unparse (tid))); | |
28bf4b0b | 666 | |
616915dd | 667 | if (ctype_isFunction (deftype)) |
668 | { | |
28bf4b0b | 669 | rettype = ctype_getReturnType (deftype); |
616915dd | 670 | } |
671 | else | |
672 | { | |
673 | rettype = ctype_unknown; | |
674 | } | |
675 | ||
676 | /* | |
677 | ** check has been moved here... | |
678 | */ | |
679 | ||
680 | if (ctype_isFunction (idDecl_getCtype (tid))) | |
681 | { | |
682 | ue = uentry_makeIdFunction (tid); | |
683 | reflectSpecialCode (ue); | |
684 | reflectArgsUsed (ue); | |
685 | } | |
686 | else | |
687 | { | |
688 | llparseerror (message ("Inconsistent function declaration: %q", | |
689 | idDecl_unparse (tid))); | |
690 | ||
691 | tid = idDecl_replaceCtype | |
692 | (tid, ctype_makeFunction (ctype_unknown, uentryList_undefined)); | |
693 | ue = uentry_makeIdFunction (tid); | |
694 | } | |
616915dd | 695 | |
28bf4b0b | 696 | reflectStorageClass (ue); |
616915dd | 697 | uentry_checkParams (ue); |
28bf4b0b | 698 | reflectBufferConstraint (ue); |
699 | ||
700 | DPRINTF (("Supercede function: %s", uentry_unparseFull (ue))); | |
616915dd | 701 | |
702 | ue = usymtab_supGlobalEntryReturn (ue); | |
28bf4b0b | 703 | DPRINTF (("After supercede function: %s", uentry_unparseFull (ue))); |
704 | ||
616915dd | 705 | context_enterFunction (ue); |
706 | enterFunctionParams (uentry_getParams (ue)); | |
707 | ||
708 | resetStorageClass (); | |
28bf4b0b | 709 | DPRINTF (("Function: %s", uentry_unparseFull (ue))); |
616915dd | 710 | return (ue); |
711 | } | |
712 | ||
713 | /* | |
714 | ** for now, no type checking | |
715 | ** (must check later though!) | |
716 | */ | |
717 | ||
718 | static /*@only@*/ uentry globalDeclareOldStyleFunction (idDecl tid) | |
719 | { | |
720 | uentry ue; | |
721 | ||
722 | /* | |
723 | ** check has been moved here... | |
724 | */ | |
725 | ||
726 | if (cstring_equalLit (idDecl_observeId (tid), "main")) | |
727 | { | |
728 | context_setFlagTemp (FLG_MAINTYPE, FALSE); | |
729 | } | |
730 | ||
731 | ue = uentry_makeIdFunction (tid); | |
732 | reflectStorageClass (ue); | |
733 | reflectSpecialCode (ue); | |
734 | reflectArgsUsed (ue); | |
735 | uentry_setDefined (ue, g_currentloc); | |
28bf4b0b | 736 | uentry_checkParams (ue); |
616915dd | 737 | resetStorageClass (); |
738 | return (ue); | |
739 | } | |
740 | ||
741 | static void oldStyleDeclareFunction (/*@only@*/ uentry e) | |
742 | { | |
743 | uentryList params = saveParamList; | |
744 | ctype rt = uentry_getType (e); | |
745 | ||
746 | llassert (ctype_isFunction (rt)); | |
747 | ||
748 | e = usymtab_supGlobalEntryReturn (e); | |
749 | ||
750 | context_enterFunction (e); | |
751 | enterFunctionParams (params); | |
752 | saveParamList = uentryList_undefined; | |
753 | resetStorageClass (); | |
754 | } | |
755 | ||
28bf4b0b | 756 | void clabstract_declareFunction (idDecl tid) /*@globals undef saveFunction; @*/ |
616915dd | 757 | { |
758 | uentry ue; | |
759 | ||
760 | DPRINTF (("Declare function: %s", idDecl_unparse (tid))); | |
761 | ||
762 | if (ProcessingParams) | |
763 | { | |
764 | ue = globalDeclareOldStyleFunction (tid); | |
765 | saveFunction = ue; | |
766 | } | |
767 | else | |
768 | { | |
769 | saveFunction = uentry_undefined; | |
770 | ||
771 | if (context_inRealFunction ()) | |
772 | { | |
773 | ue = uentry_makeVariableLoc (idDecl_observeId (tid), ctype_unknown); | |
774 | ||
775 | llparseerror (message ("Function declared inside function: %q", | |
776 | idDecl_unparse (tid))); | |
777 | ||
778 | context_quietExitFunction (); | |
779 | ue = usymtab_supEntryReturn (ue); | |
780 | } | |
781 | else | |
782 | { | |
783 | if (context_inInnerScope ()) | |
784 | { | |
785 | llparseerror (message ("Declaration in inner context: %q", | |
786 | idDecl_unparse (tid))); | |
787 | ||
788 | sRef_setGlobalScope (); | |
789 | ue = uentry_makeVariableLoc (idDecl_observeId (tid), | |
790 | ctype_unknown); | |
791 | ue = usymtab_supGlobalEntryReturn (ue); | |
792 | sRef_clearGlobalScope (); | |
793 | } | |
794 | else | |
795 | { | |
28bf4b0b | 796 | ue = clabstract_globalDeclareFunction (tid); |
616915dd | 797 | } |
798 | } | |
799 | ||
800 | resetGlobals (); | |
801 | } | |
802 | ||
803 | resetStorageClass (); | |
804 | idDecl_free (tid); | |
805 | } | |
806 | ||
807 | void declareStaticFunction (idDecl tid) /*@globals undef saveFunction; @*/ | |
808 | { | |
809 | uentry ue; | |
810 | ||
811 | DPRINTF (("Declare static funciton: %s", idDecl_unparse (tid))); | |
812 | ||
813 | if (ProcessingParams) | |
814 | { | |
815 | ue = globalDeclareOldStyleFunction (tid); | |
816 | saveFunction = ue; | |
817 | } | |
818 | else | |
819 | { | |
820 | saveFunction = uentry_undefined; | |
821 | ||
822 | if (context_inRealFunction ()) | |
823 | { | |
824 | ue = uentry_makeVariableLoc (idDecl_observeId (tid), ctype_unknown); | |
825 | ||
826 | llparseerror (message ("Function declared inside function: %q", | |
827 | idDecl_unparse (tid))); | |
828 | ||
829 | context_quietExitFunction (); | |
830 | ue = usymtab_supEntryReturn (ue); | |
831 | } | |
832 | else | |
833 | { | |
834 | if (context_inInnerScope ()) | |
835 | { | |
836 | llparseerror (message ("Declaration in inner context: %q", | |
837 | idDecl_unparse (tid))); | |
838 | ||
839 | sRef_setGlobalScope (); | |
840 | ue = uentry_makeVariableLoc (idDecl_observeId (tid), | |
841 | ctype_unknown); | |
842 | ue = usymtab_supGlobalEntryReturn (ue); | |
843 | sRef_clearGlobalScope (); | |
844 | } | |
845 | else | |
846 | { | |
847 | ctype deftype = idDecl_getCtype (tid); | |
848 | ctype rettype; | |
849 | ||
850 | if (ctype_isFunction (deftype)) | |
851 | { | |
28bf4b0b | 852 | rettype = ctype_getReturnType (deftype); |
616915dd | 853 | } |
854 | else | |
855 | { | |
856 | rettype = ctype_unknown; | |
857 | } | |
858 | ||
859 | /* | |
860 | ** check has been moved here... | |
861 | */ | |
862 | ||
863 | if (ctype_isFunction (idDecl_getCtype (tid))) | |
864 | { | |
865 | ue = uentry_makeIdFunction (tid); | |
866 | reflectSpecialCode (ue); | |
867 | reflectArgsUsed (ue); | |
868 | } | |
869 | else | |
870 | { | |
871 | llparseerror (message ("Inconsistent function declaration: %q", | |
872 | idDecl_unparse (tid))); | |
873 | ||
874 | tid = idDecl_replaceCtype | |
875 | (tid, ctype_makeFunction (ctype_unknown, uentryList_undefined)); | |
876 | ue = uentry_makeIdFunction (tid); | |
877 | } | |
878 | ||
879 | reflectStorageClass (ue); | |
880 | uentry_setStatic (ue); | |
881 | ||
882 | uentry_checkParams (ue); | |
28bf4b0b | 883 | reflectBufferConstraint (ue); |
616915dd | 884 | |
885 | DPRINTF (("Sub global entry: %s", uentry_unparse (ue))); | |
886 | ue = usymtab_supGlobalEntryReturn (ue); | |
887 | ||
888 | context_enterFunction (ue); | |
889 | enterFunctionParams (uentry_getParams (ue)); | |
890 | resetStorageClass (); | |
891 | } | |
892 | } | |
893 | ||
894 | resetGlobals (); | |
895 | } | |
896 | ||
897 | resetStorageClass (); | |
898 | idDecl_free (tid); | |
899 | } | |
900 | ||
901 | void | |
902 | checkTypeDecl (uentry e, ctype rep) | |
903 | { | |
904 | cstring n = uentry_getName (e); | |
905 | ||
28bf4b0b | 906 | DPRINTF (("Check type decl: %s", uentry_unparseFull (e))); |
616915dd | 907 | |
908 | if (cstring_equal (context_getBoolName (), n)) | |
909 | { | |
910 | ctype rrep = ctype_realType (rep); | |
911 | ||
912 | /* | |
913 | ** for abstract enum types, we need to fix the enum members: | |
914 | ** they should have the abstract type, not the rep type. | |
915 | */ | |
916 | ||
917 | if (ctype_isEnum (ctype_realType (rrep))) | |
918 | { | |
919 | enumNameList el = ctype_elist (rrep); | |
920 | ||
921 | enumNameList_elements (el, ye) | |
922 | { | |
923 | if (usymtab_existsGlob (ye)) | |
924 | { | |
925 | uentry ue = usymtab_lookupSafe (ye); | |
926 | uentry_setType (ue, ctype_bool); | |
927 | } | |
928 | ||
929 | if (cstring_equal (context_getTrueName (), ye) | |
930 | || cstring_equal (context_getFalseName (), ye)) | |
931 | { | |
932 | ; | |
933 | } | |
934 | else | |
935 | { | |
936 | vgenhinterror | |
937 | (FLG_SYNTAX, | |
938 | message ("Member of boolean enumerated type definition " | |
939 | "does not match name set to represent TRUE " | |
940 | "or FALSE: %s", | |
941 | ye), | |
942 | message ("Use -boolfalse and -booltrue to set the " | |
943 | "name of false and true boolean values."), | |
944 | uentry_whereDefined (e)); | |
945 | } | |
946 | } end_enumNameList_elements; | |
947 | } | |
948 | } | |
949 | ||
950 | if (usymtab_exists (n)) | |
951 | { | |
952 | usymId llm = usymtab_getId (n); | |
953 | uentry le = usymtab_getTypeEntry (llm); | |
954 | ||
955 | uentry_setDeclared (e, g_currentloc); | |
956 | uentry_setSref (e, sRef_makeGlobal (llm, uentry_getType (le))); | |
957 | ||
958 | DPRINTF (("Here we are: %s / %s", | |
959 | n, context_getBoolName ())); | |
960 | ||
961 | if (uentry_isAbstractDatatype (le)) | |
962 | { | |
963 | ctype rrep = ctype_realType (rep); | |
964 | ||
28bf4b0b | 965 | DPRINTF (("Abstract type: %s", uentry_unparseFull (le))); |
966 | ||
616915dd | 967 | /* |
968 | ** for abstract enum types, we need to fix the enum members: | |
969 | ** they should have the abstract type, not the rep type. | |
970 | */ | |
971 | ||
972 | if (ctype_isEnum (ctype_realType (rrep))) | |
973 | { | |
974 | ctype at = uentry_getAbstractType (le); | |
975 | enumNameList el = ctype_elist (rrep); | |
976 | ||
977 | enumNameList_elements (el, ye) | |
978 | { | |
979 | if (usymtab_existsGlob (ye)) | |
980 | { | |
981 | uentry ue = usymtab_lookupSafe (ye); | |
982 | ||
983 | llassert (uentry_isEitherConstant (ue)); | |
984 | llassertprint (ctype_match (uentry_getType (ue), rrep), | |
985 | ("Bad enum: %s / %s", | |
986 | uentry_unparse (ue), | |
987 | ctype_unparse (rrep))); | |
988 | ||
989 | uentry_setType (ue, at); | |
990 | } | |
991 | } end_enumNameList_elements; | |
992 | } | |
993 | ||
994 | if (uentry_isMutableDatatype (le)) | |
995 | { | |
996 | /* maybe more complicated if abstract and immutable ? */ | |
997 | ||
998 | if (!ctype_isRealPointer (rep) && !ctype_isRealAbstract (rep)) | |
999 | { | |
1000 | voptgenerror | |
1001 | (FLG_MUTREP, | |
1002 | message ("Mutable abstract type %s declared without pointer " | |
1003 | "indirection: %s (violates assignment semantics)", | |
1004 | n, ctype_unparse (rep)), | |
1005 | uentry_whereDefined (e)); | |
1006 | ||
1007 | uentry_setMutable (e); | |
1008 | } | |
1009 | } | |
1010 | } | |
1011 | } | |
1012 | else | |
1013 | { | |
1014 | fileloc fl = uentry_whereDeclared (e); | |
1015 | ||
1016 | if (context_getFlag (FLG_LIKELYBOOL) | |
1017 | && !context_getFlag (FLG_BOOLINT)) | |
1018 | { | |
1019 | if ((cstring_equalLit (n, "BOOL") | |
1020 | || cstring_equalLit (n, "Bool") | |
1021 | || cstring_equalLit (n, "bool") | |
1022 | || cstring_equalLit (n, "boolean") | |
1023 | || cstring_equalLit (n, "Boolean") | |
1024 | || cstring_equalLit (n, "BOOLEAN")) | |
1025 | && !(cstring_equal (n, context_getBoolName ()))) | |
1026 | { | |
1027 | if (context_setBoolName ()) { | |
1028 | voptgenerror | |
1029 | (FLG_LIKELYBOOL, | |
1030 | message ("Type %s is probably meant as a boolean type, but does " | |
1031 | "not match the boolean type name \"%s\".", | |
1032 | n, | |
1033 | context_getBoolName ()), | |
1034 | fl); | |
1035 | } else | |
1036 | voptgenerror | |
1037 | (FLG_LIKELYBOOL, | |
1038 | message ("Type %s is probably meant as a boolean type, " | |
1039 | "but the boolean type name is not set. " | |
1040 | "Use -booltype %s to set it.", | |
1041 | n, | |
1042 | n), | |
1043 | fl); | |
1044 | } | |
1045 | } | |
1046 | ||
1047 | if (!uentry_isStatic (e) | |
1048 | && !ctype_isFunction (uentry_getType (e)) | |
1049 | && !fileloc_isLib (fl) | |
1050 | && !fileloc_isImport (fl) | |
1051 | && fileloc_isHeader (fl)) | |
1052 | { | |
1053 | voptgenerror (FLG_EXPORTTYPE, | |
1054 | message ("Type exported, but not specified: %s\n", n), | |
1055 | fl); | |
1056 | } | |
1057 | } | |
1058 | ||
1059 | cstring_free (n); | |
1060 | } | |
1061 | ||
1062 | uentryList | |
1063 | fixUentryList (idDeclList tl, qtype q) | |
1064 | { | |
1065 | uentryList f = uentryList_new (); | |
1066 | ||
1067 | idDeclList_elements (tl, i) | |
1068 | { | |
1069 | if (idDecl_isDefined (i)) | |
1070 | { | |
1071 | uentry ue; | |
1072 | uentry old; | |
1073 | ctype rt; | |
1074 | ||
1075 | (void) idDecl_fixBase (i, q); | |
1076 | ||
1077 | /* | |
1078 | ** implicit annotations | |
1079 | */ | |
1080 | ||
1081 | (void) fixStructDecl (i); | |
1082 | ||
1083 | ue = uentry_makeIdVariable (i); | |
1084 | rt = ctype_realType (uentry_getType (ue)); | |
1085 | ||
1086 | /* | |
1087 | ** where is this here??? | |
1088 | ||
1089 | if (ctype_isArray (rt) || ctype_isSU (rt)) | |
1090 | { | |
1091 | sRef_setAllocated (uentry_getSref (ue), uentry_whereDefined (ue)); | |
1092 | } | |
1093 | ||
1094 | ** | |
1095 | */ | |
1096 | ||
1097 | if (uentry_isValid (old = uentryList_lookupField (f, uentry_rawName (ue)))) | |
1098 | { | |
1099 | if (optgenerror (FLG_SYNTAX, | |
1100 | message ("Field name reused: %s", uentry_rawName (ue)), | |
1101 | uentry_whereDefined (ue))) | |
1102 | { | |
1103 | llgenmsg (message ("Previous use of %s", uentry_rawName (ue)), | |
1104 | uentry_whereDefined (old)); | |
1105 | } | |
1106 | } | |
1107 | ||
1108 | f = uentryList_add (f, ue); | |
1109 | } | |
1110 | } end_idDeclList_elements; | |
1111 | ||
1112 | idDeclList_free (tl); | |
1113 | return (f); | |
1114 | } | |
1115 | ||
1116 | /* | |
1117 | ** This is a hack to support unnamed struct/union fields as done by | |
1118 | ** Microsoft VC++. It is not supported by the ANSI standard. | |
1119 | ** | |
1120 | ** The inner fields are added to the outer structure. This is meaningful | |
1121 | ** for nesting structs inside unions, but lclint does no related | |
1122 | ** checking. | |
1123 | */ | |
1124 | ||
1125 | uentryList | |
1126 | fixUnnamedDecl (qtype q) | |
1127 | { | |
1128 | ctype ct = ctype_realType (qtype_getType (q)); | |
1129 | ||
1130 | if (ctype_isStruct (ct) || ctype_isUnion (ct)) | |
1131 | { | |
1132 | uentryList res = ctype_getFields (ct); | |
1133 | ||
1134 | return (uentryList_copy (res)); | |
1135 | } | |
1136 | else | |
1137 | { | |
1138 | BADBRANCHCONT; | |
1139 | } | |
1140 | ||
1141 | return uentryList_undefined; | |
1142 | } | |
1143 | ||
1144 | void setStorageClass (storageClassCode sc) | |
1145 | { | |
1146 | storageClass = sc; | |
1147 | } | |
1148 | ||
1149 | void | |
1150 | setProcessingIterVars (uentry iter) | |
1151 | { | |
1152 | ProcessingIterVars = TRUE; | |
1153 | currentIter = iter; | |
1154 | saveIterParamNo = 0; | |
1155 | } | |
1156 | ||
1157 | void | |
1158 | setProcessingGlobalsList () | |
1159 | { | |
1160 | ProcessingGlobals = TRUE; | |
616915dd | 1161 | fcnNoGlobals = FALSE; |
1162 | } | |
1163 | ||
1164 | static bool ProcessingGlobMods = FALSE; | |
1165 | ||
1166 | void | |
1167 | setProcessingGlobMods () | |
1168 | { | |
1169 | ProcessingGlobMods = TRUE; | |
1170 | } | |
1171 | ||
1172 | void | |
1173 | clearProcessingGlobMods () | |
1174 | { | |
1175 | ProcessingGlobMods = FALSE; | |
1176 | } | |
1177 | ||
1178 | bool | |
1179 | isProcessingGlobMods () | |
1180 | { | |
1181 | return (ProcessingGlobMods); | |
1182 | } | |
1183 | ||
1184 | static void resetGlobals (void) | |
1185 | { | |
1186 | ProcessingGlobals = FALSE; | |
616915dd | 1187 | fcnNoGlobals = FALSE; |
1188 | } | |
1189 | ||
1190 | void | |
1191 | unsetProcessingGlobals () | |
1192 | { | |
1193 | ProcessingGlobals = FALSE; | |
1194 | } | |
1195 | ||
1196 | void | |
1197 | setProcessingVars (/*@only@*/ qtype q) | |
1198 | { | |
1199 | ProcessingVars = TRUE; | |
1200 | qtype_free (processingType); | |
1201 | processingType = q; | |
1202 | } | |
1203 | ||
1204 | static void | |
1205 | setGenericParamList (/*@dependent@*/ uentryList pm) | |
1206 | { | |
1207 | ProcessingParams = TRUE; | |
1208 | saveParamList = pm; | |
1209 | } | |
1210 | ||
1211 | void | |
1212 | setProcessingTypedef (/*@only@*/ qtype q) | |
1213 | { | |
1214 | ProcessingTypedef = TRUE; | |
1215 | ||
1216 | qtype_free (processingType); | |
1217 | processingType = q; | |
1218 | } | |
1219 | ||
1220 | void | |
1221 | unsetProcessingVars () | |
1222 | { | |
1223 | resetStorageClass (); | |
1224 | ProcessingVars = FALSE; | |
1225 | } | |
1226 | ||
1227 | void | |
1228 | doneParams () | |
1229 | { | |
1230 | if (ProcessingParams) | |
1231 | { | |
1232 | if (uentry_isInvalid (saveFunction)) | |
1233 | { | |
1234 | llbuglit ("unsetProcessingVars: no saved function\n"); | |
616915dd | 1235 | } |
1236 | else | |
1237 | { | |
28bf4b0b | 1238 | ctype ct = ctype_getReturnType (uentry_getType (saveFunction)); |
616915dd | 1239 | uentryList params = uentryList_copy (saveParamList); |
1240 | ctype ct2 = ctype_makeFunction (ct, params); | |
1241 | ||
1242 | uentry_setType (saveFunction, ct2); | |
1243 | ProcessingParams = FALSE; | |
1244 | ||
28bf4b0b | 1245 | reflectBufferConstraint (saveFunction); |
616915dd | 1246 | oldStyleDeclareFunction (saveFunction); |
1247 | saveFunction = uentry_undefined; | |
1248 | resetGlobals (); | |
1249 | } | |
1250 | } | |
1251 | else | |
1252 | { | |
1253 | /* | |
1254 | ** If the paramlist used a type name, we could be here. | |
1255 | */ | |
1256 | ||
1257 | llfatalerror (message ("%q: Old-style function parameter list uses a " | |
1258 | "type name.", fileloc_unparse (g_currentloc))); | |
1259 | } | |
1260 | } | |
1261 | ||
1262 | void | |
1263 | checkDoneParams () | |
1264 | { | |
1265 | if (uentry_isValid (saveFunction)) | |
1266 | { | |
1267 | /* | |
1268 | ** old style declaration | |
1269 | */ | |
1270 | ||
28bf4b0b | 1271 | ctype ct = ctype_getReturnType (uentry_getType (saveFunction)); |
616915dd | 1272 | ctype ct2; |
1273 | ||
1274 | uentryList_elements (saveParamList, current) | |
1275 | { | |
1276 | uentry_setType (current, ctype_int); /* all params are ints */ | |
1277 | } end_uentryList_elements; | |
1278 | ||
1279 | ct2 = ctype_makeParamsFunction (ct, uentryList_copy (saveParamList)); | |
1280 | ||
1281 | uentry_setType (saveFunction, ct2); | |
1282 | ProcessingParams = FALSE; | |
1283 | ||
1284 | oldStyleDeclareFunction (saveFunction); | |
1285 | saveFunction = uentry_undefined; | |
1286 | } | |
1287 | } | |
1288 | ||
1289 | void | |
1290 | unsetProcessingTypedef () | |
1291 | { | |
1292 | ProcessingTypedef = FALSE; | |
1293 | } | |
1294 | ||
1295 | void checkConstant (qtype t, idDecl id) | |
1296 | { | |
1297 | uentry e; | |
1298 | ||
1299 | id = idDecl_fixBase (id, t); | |
1300 | e = uentry_makeIdConstant (id); | |
1301 | ||
1302 | reflectStorageClass (e); | |
1303 | resetStorageClass (); | |
1304 | ||
1305 | usymtab_supGlobalEntry (e); | |
1306 | } | |
1307 | ||
1308 | void checkValueConstant (qtype t, idDecl id, exprNode e) | |
1309 | { | |
1310 | uentry ue; | |
1311 | ||
1312 | id = idDecl_fixBase (id, t); | |
1313 | ue = uentry_makeIdConstant (id); | |
1314 | reflectStorageClass (ue); | |
1315 | resetStorageClass (); | |
1316 | ||
1317 | if (exprNode_isDefined (e)) | |
1318 | { | |
1319 | if (!exprNode_matchType (uentry_getType (ue), e)) | |
1320 | { | |
1321 | (void) gentypeerror | |
1322 | (exprNode_getType (e), e, | |
1323 | uentry_getType (ue), exprNode_undefined, | |
1324 | message ("Constant %q initialized to type %t, expects %t: %s", | |
1325 | uentry_getName (ue), | |
1326 | exprNode_getType (e), | |
1327 | uentry_getType (ue), | |
1328 | exprNode_unparse (e)), | |
1329 | exprNode_loc (e)); | |
1330 | } | |
1331 | else | |
1332 | { | |
1333 | if (exprNode_hasValue (e)) | |
1334 | { | |
1335 | uentry_mergeConstantValue (ue, multiVal_copy (exprNode_getValue (e))); | |
1336 | } | |
1337 | } | |
1338 | } | |
1339 | ||
1340 | usymtab_supGlobalEntry (ue); | |
1341 | } | |
1342 | ||
616915dd | 1343 | void processNamedDecl (idDecl t) |
1344 | { | |
1345 | if (qtype_isUndefined (processingType)) | |
1346 | { | |
1347 | llparseerror (message ("No type before declaration name: %q", idDecl_unparse (t))); | |
1348 | ||
1349 | processingType = qtype_create (ctype_unknown); | |
1350 | } | |
1351 | ||
1352 | t = idDecl_fixBase (t, processingType); | |
1353 | ||
1354 | DPRINTF (("Declare: %s", idDecl_unparse (t))); | |
1355 | ||
1356 | if (ProcessingGlobals) | |
1357 | { | |
1358 | cstring id = idDecl_getName (t); | |
1359 | uentry ue = usymtab_lookupSafe (id); | |
28bf4b0b | 1360 | |
616915dd | 1361 | if (!uentry_isValid (ue)) |
1362 | { | |
1363 | llerror (FLG_UNRECOG, | |
1364 | message ("Variable used in globals list is undeclared: %s", id)); | |
1365 | } | |
1366 | else | |
1367 | { | |
1368 | if (!ctype_match (uentry_getType (ue), idDecl_getCtype (t))) | |
1369 | { | |
1370 | voptgenerror | |
1371 | (FLG_INCONDEFS, | |
1372 | message ("Variable %s used in globals list declared %s, " | |
1373 | "but listed as %s", | |
1374 | id, ctype_unparse (uentry_getType (ue)), | |
1375 | ctype_unparse (idDecl_getCtype (t))), | |
1376 | g_currentloc); | |
1377 | } | |
1378 | else | |
1379 | { | |
1380 | sRef sr = sRef_copy (uentry_getSref (ue)); | |
616915dd | 1381 | reflectGlobalQualifiers (sr, idDecl_getQuals (t)); |
616915dd | 1382 | } |
1383 | } | |
1384 | } | |
1385 | else if (ProcessingVars) | |
1386 | { | |
1387 | uentry e; | |
1388 | ctype ct; | |
1389 | ||
1390 | ct = ctype_realType (idDecl_getCtype (t)); | |
1391 | ||
1392 | if (ProcessingParams) | |
1393 | { | |
1394 | cstring id = idDecl_getName (t); | |
1395 | int paramno = uentryList_lookupRealName (saveParamList, id); | |
1396 | ||
1397 | if (paramno >= 0) | |
1398 | { | |
1399 | uentry cparam = uentryList_getN (saveParamList, paramno); | |
1400 | ||
1401 | uentry_setType (cparam, idDecl_getCtype (t)); | |
1402 | uentry_reflectQualifiers (cparam, idDecl_getQuals (t)); | |
1403 | uentry_setDeclaredOnly (cparam, context_getSaveLocation ()); | |
1404 | } | |
1405 | else | |
1406 | { | |
1407 | llfatalerrorLoc | |
1408 | (message ("Old style declaration uses unlisted parameter: %s", | |
1409 | id)); | |
1410 | } | |
1411 | } | |
1412 | else | |
1413 | { | |
1414 | fileloc loc; | |
1415 | ||
1416 | if (context_inIterDef ()) | |
1417 | { | |
1418 | cstring pname = makeParam (idDecl_observeId (t)); | |
1419 | uentry p = usymtab_lookupSafe (pname); | |
1420 | ||
1421 | cstring_free (pname); | |
1422 | ||
1423 | if (uentry_isYield (p)) | |
28bf4b0b | 1424 | { |
1425 | e = uentry_makeParam (t, sRef_getParam (uentry_getSref (p))); | |
1426 | uentry_checkYieldParam (p, e); | |
1427 | usymtab_supEntrySref (e); | |
1428 | return; | |
1429 | } | |
616915dd | 1430 | } |
28bf4b0b | 1431 | |
616915dd | 1432 | if ((hasSpecialCode () || argsUsed) |
1433 | && ctype_isFunction (idDecl_getCtype (t))) | |
28bf4b0b | 1434 | { |
616915dd | 1435 | e = uentry_makeIdFunction (t); |
1436 | reflectSpecialCode (e); | |
1437 | reflectArgsUsed (e); | |
28bf4b0b | 1438 | } |
616915dd | 1439 | else |
28bf4b0b | 1440 | { |
1441 | e = uentry_makeIdVariable (t); | |
1442 | } | |
1443 | ||
616915dd | 1444 | loc = uentry_whereDeclared (e); |
28bf4b0b | 1445 | |
616915dd | 1446 | /* |
28bf4b0b | 1447 | if (context_inGlobalScope ()) |
616915dd | 1448 | { |
1449 | uentry_checkParams was here! | |
1450 | } | |
28bf4b0b | 1451 | */ |
1452 | ||
616915dd | 1453 | if (ctype_isFunction (uentry_getType (e))) |
1454 | { | |
28bf4b0b | 1455 | clabstract_prepareFunction (e); |
1456 | reflectBufferConstraint (e); | |
616915dd | 1457 | } |
1458 | ||
28bf4b0b | 1459 | DPRINTF (("Superceding... %s", uentry_unparseFull (e))); |
616915dd | 1460 | e = usymtab_supEntrySrefReturn (e); |
28bf4b0b | 1461 | DPRINTF (("After superceding... %s", uentry_unparseFull (e))); |
1462 | ||
616915dd | 1463 | if (uentry_isExtern (e) && !context_inGlobalScope ()) |
1464 | { | |
1465 | voptgenerror | |
1466 | (FLG_NESTEDEXTERN, | |
1467 | message ("Declaration using extern inside function scope: %q", | |
1468 | uentry_unparse (e)), | |
1469 | g_currentloc); | |
1470 | ||
1471 | uentry_setDefined (e, fileloc_getExternal ()); | |
1472 | sRef_setDefined (uentry_getSref (e), fileloc_getExternal ()); | |
1473 | } | |
28bf4b0b | 1474 | |
616915dd | 1475 | if (uentry_isFunction (e)) |
1476 | { | |
28bf4b0b | 1477 | if (!context_inXHFile ()) |
1478 | { | |
1479 | checkParamNames (e); | |
1480 | } | |
616915dd | 1481 | } |
28bf4b0b | 1482 | |
1483 | if (uentry_isVar (e) && uentry_isCheckedUnknown (e)) | |
616915dd | 1484 | { |
1485 | sRef sr = uentry_getSref (e); | |
28bf4b0b | 1486 | |
616915dd | 1487 | if (sRef_isLocalVar (sr)) |
1488 | { | |
1489 | if (context_getFlag (FLG_IMPCHECKMODINTERNALS)) | |
1490 | { | |
1491 | uentry_setCheckMod (e); | |
1492 | } | |
1493 | else | |
1494 | { | |
1495 | uentry_setUnchecked (e); | |
1496 | } | |
1497 | } | |
1498 | else if (sRef_isFileStatic (sr)) | |
1499 | { | |
1500 | if (context_getFlag (FLG_IMPCHECKEDSTRICTSTATICS)) | |
1501 | { | |
1502 | uentry_setCheckedStrict (e); | |
1503 | } | |
1504 | else if (context_getFlag (FLG_IMPCHECKEDSTATICS)) | |
1505 | { | |
1506 | uentry_setChecked (e); | |
1507 | } | |
1508 | else if (context_getFlag (FLG_IMPCHECKMODSTATICS)) | |
1509 | { | |
1510 | uentry_setCheckMod (e); | |
1511 | } | |
1512 | else | |
1513 | { | |
1514 | ; | |
1515 | } | |
1516 | } | |
1517 | else /* real global */ | |
1518 | { | |
1519 | llassert (sRef_isRealGlobal (sr)); | |
28bf4b0b | 1520 | |
616915dd | 1521 | if (context_getFlag (FLG_IMPCHECKEDSTRICTGLOBALS)) |
1522 | { | |
1523 | uentry_setCheckedStrict (e); | |
1524 | } | |
1525 | else if (context_getFlag (FLG_IMPCHECKEDGLOBALS)) | |
1526 | { | |
1527 | uentry_setChecked (e); | |
1528 | } | |
1529 | else if (context_getFlag (FLG_IMPCHECKMODGLOBALS)) | |
1530 | { | |
1531 | uentry_setCheckMod (e); | |
1532 | } | |
1533 | else | |
1534 | { | |
1535 | ; | |
1536 | } | |
1537 | } | |
1538 | } | |
1539 | } | |
1540 | } | |
1541 | else if (ProcessingTypedef) | |
1542 | { | |
1543 | ctype ct = idDecl_getCtype (t); | |
1544 | uentry e; | |
28bf4b0b | 1545 | |
616915dd | 1546 | DPRINTF (("Processing typedef: %s", ctype_unparse (ct))); |
1547 | ||
1548 | e = uentry_makeIdDatatype (t); | |
1549 | ||
1550 | if (cstring_equal (idDecl_getName (t), context_getBoolName ())) { | |
1551 | ctype rt = ctype_realType (ct); | |
1552 | ||
1553 | if (ctype_isEnum (rt)) { | |
1554 | ; | |
1555 | } else { | |
1556 | if (!(ctype_isInt (rt) | |
1557 | || ctype_isUnknown (rt) | |
1558 | || ctype_isChar (rt))) { | |
1559 | (void) llgenerror | |
1560 | (FLG_BOOLTYPE, | |
1561 | message ("Boolean type %s defined using non-standard type %s (integral, char or enum type expected)", | |
1562 | context_getBoolName (), | |
1563 | ctype_unparse (ct)), | |
1564 | uentry_whereLast (e)); | |
1565 | } | |
1566 | ||
1567 | ct = ctype_bool; | |
1568 | uentry_setType (e, ct); | |
1569 | } | |
1570 | } | |
1571 | ||
1572 | reflectStorageClass (e); | |
1573 | checkTypeDecl (e, ct); | |
1574 | ||
1575 | e = usymtab_supReturnTypeEntry (e); | |
616915dd | 1576 | } |
1577 | else | |
1578 | { | |
1579 | llparseerror (message ("Suspect missing struct or union keyword: %q", | |
1580 | idDecl_unparse (t))); | |
1581 | } | |
1582 | ||
1583 | } | |
1584 | ||
1585 | /* | |
1586 | ** moved from grammar | |
1587 | */ | |
1588 | ||
1589 | static idDecl fixStructDecl (/*@returned@*/ idDecl d) | |
1590 | { | |
1591 | if (ctype_isVisiblySharable (idDecl_getCtype (d)) | |
1592 | && context_getFlag (FLG_STRUCTIMPONLY)) | |
1593 | { | |
1594 | if (!qualList_hasAliasQualifier (idDecl_getQuals (d))) | |
1595 | { | |
1596 | if (qualList_hasExposureQualifier (idDecl_getQuals (d))) | |
1597 | { | |
1598 | idDecl_addQual (d, qual_createDependent ()); | |
1599 | } | |
1600 | else | |
1601 | { | |
1602 | idDecl_addQual (d, qual_createImpOnly ()); | |
1603 | } | |
1604 | } | |
1605 | } | |
1606 | ||
1607 | return d; | |
1608 | } | |
1609 | ||
1610 | ctype | |
1611 | declareUnnamedStruct (/*@only@*/ uentryList f) | |
1612 | { | |
28bf4b0b | 1613 | DPRINTF (("Unnamed struct: %s", uentryList_unparse (f))); |
1614 | ||
616915dd | 1615 | if (context_maybeSet (FLG_NUMSTRUCTFIELDS)) |
1616 | { | |
1617 | int num = uentryList_size (f); | |
1618 | int max = context_getValue (FLG_NUMSTRUCTFIELDS); | |
1619 | ||
1620 | if (num > max) | |
1621 | { | |
1622 | voptgenerror | |
1623 | (FLG_NUMSTRUCTFIELDS, | |
1624 | message ("Structure declared with %d fields " | |
1625 | "(limit is set to %d)", | |
1626 | num, max), | |
1627 | g_currentloc); | |
1628 | } | |
1629 | } | |
1630 | ||
1631 | return (ctype_createUnnamedStruct (f)); | |
1632 | } | |
1633 | ||
1634 | ctype | |
1635 | declareUnnamedUnion (/*@only@*/ uentryList f) | |
1636 | { | |
1637 | if (context_maybeSet (FLG_NUMSTRUCTFIELDS)) | |
1638 | { | |
1639 | int num = uentryList_size (f); | |
1640 | int max = context_getValue (FLG_NUMSTRUCTFIELDS); | |
1641 | ||
1642 | if (num > max) | |
1643 | { | |
1644 | voptgenerror | |
1645 | (FLG_NUMSTRUCTFIELDS, | |
1646 | message ("Union declared with %d fields " | |
1647 | "(limit is set to %d)", | |
1648 | num, max), | |
1649 | g_currentloc); | |
1650 | } | |
1651 | } | |
1652 | ||
1653 | return (ctype_createUnnamedUnion (f)); | |
1654 | } | |
1655 | ||
1656 | ctype declareStruct (cstring id, /*@only@*/ uentryList f) | |
1657 | { | |
1658 | ctype ct; | |
1659 | uentry ue; | |
1660 | int num = uentryList_size (f); | |
1661 | ||
28bf4b0b | 1662 | DPRINTF (("Declare struct: %s / %s", id, uentryList_unparse (f))); |
1663 | ||
616915dd | 1664 | ct = ctype_createStruct (cstring_copy (id), f); |
28bf4b0b | 1665 | |
1666 | DPRINTF (("Ctype: %s", ctype_unparse (ct))); | |
1667 | ||
616915dd | 1668 | ue = uentry_makeStructTagLoc (id, ct); |
1669 | ||
28bf4b0b | 1670 | DPRINTF (("ue: %s", uentry_unparseFull (ue))); |
1671 | ||
616915dd | 1672 | if (context_maybeSet (FLG_NUMSTRUCTFIELDS)) |
1673 | { | |
1674 | int max = context_getValue (FLG_NUMSTRUCTFIELDS); | |
1675 | ||
1676 | if (num > max) | |
1677 | { | |
1678 | voptgenerror | |
1679 | (FLG_NUMSTRUCTFIELDS, | |
1680 | message ("Structure %q declared with %d fields " | |
1681 | "(limit is set to %d)", | |
1682 | uentry_getName (ue), num, max), | |
1683 | uentry_whereLast (ue)); | |
1684 | } | |
1685 | } | |
1686 | ||
1687 | return (usymtab_supTypeEntry (ue)); | |
1688 | } | |
1689 | ||
1690 | ctype declareUnion (cstring id, uentryList f) | |
1691 | { | |
1692 | ctype ct; | |
1693 | uentry ue; | |
1694 | int num = uentryList_size (f); | |
1695 | ||
1696 | ct = ctype_createUnion (cstring_copy (id), f); | |
1697 | ue = uentry_makeUnionTagLoc (id, ct); | |
1698 | ||
1699 | if (context_maybeSet (FLG_NUMSTRUCTFIELDS)) | |
1700 | { | |
1701 | int max = context_getValue (FLG_NUMSTRUCTFIELDS); | |
1702 | ||
1703 | if (num > max) | |
1704 | { | |
1705 | voptgenerror | |
1706 | (FLG_NUMSTRUCTFIELDS, | |
1707 | message ("Union %q declared with %d fields " | |
1708 | "(limit is set to %d)", | |
1709 | uentry_getName (ue), num, max), | |
1710 | uentry_whereLast (ue)); | |
1711 | } | |
1712 | } | |
1713 | ||
1714 | return (usymtab_supTypeEntry (ue)); | |
1715 | } | |
1716 | ||
1717 | ctype handleStruct (/*@only@*/ cstring id) | |
1718 | { | |
1719 | if (usymtab_existsStructTag (id)) | |
1720 | { | |
1721 | ctype ct = uentry_getAbstractType (usymtab_lookupStructTag (id)); | |
1722 | ||
1723 | cstring_free (id); | |
1724 | return ct; | |
1725 | } | |
1726 | else | |
1727 | { | |
1728 | return (ctype_createForwardStruct (id)); | |
1729 | } | |
1730 | } | |
1731 | ||
1732 | ctype handleUnion (/*@only@*/ cstring id) | |
1733 | { | |
1734 | if (usymtab_existsUnionTag (id)) | |
1735 | { | |
1736 | ctype ret = uentry_getAbstractType (usymtab_lookupUnionTag (id)); | |
1737 | cstring_free (id); | |
1738 | return (ret); | |
1739 | } | |
1740 | else | |
1741 | { | |
1742 | return (ctype_createForwardUnion (id)); | |
1743 | } | |
1744 | } | |
1745 | ||
1746 | ctype | |
1747 | handleEnum (cstring id) | |
1748 | { | |
1749 | if (usymtab_existsEnumTag (id)) | |
1750 | { | |
1751 | ctype ret = uentry_getAbstractType (usymtab_lookupEnumTag (id)); | |
1752 | cstring_free (id); | |
1753 | return ret; | |
1754 | } | |
1755 | else | |
1756 | { | |
1757 | return (declareEnum (id, enumNameList_new ())); | |
1758 | } | |
1759 | } | |
1760 | ||
1761 | bool processingIterVars (void) | |
1762 | { | |
1763 | return ProcessingIterVars; | |
1764 | } | |
1765 | ||
1766 | uentry getCurrentIter (void) | |
1767 | { | |
1768 | return currentIter; | |
1769 | } | |
1770 | ||
1771 | static bool flipOldStyle = FALSE; | |
1772 | static bool flipNewStyle = TRUE; | |
1773 | ||
1774 | void setFlipOldStyle () { flipOldStyle = TRUE; } | |
1775 | bool isFlipOldStyle () { return flipOldStyle; } | |
1776 | bool isNewStyle () { return flipNewStyle; } | |
1777 | void setNewStyle () { flipNewStyle = TRUE; } | |
1778 | ||
1779 | /*@dependent@*/ uentryList handleParamIdList (/*@dependent@*/ uentryList params) | |
1780 | { | |
1781 | int paramno = 0; | |
1782 | ||
1783 | /* | |
1784 | ** this is a really YUCKY hack to handle old style | |
1785 | ** declarations. | |
1786 | */ | |
1787 | ||
1788 | voptgenerror (FLG_OLDSTYLE, | |
1789 | cstring_makeLiteral ("Old style function declaration"), | |
1790 | g_currentloc); | |
1791 | ||
1792 | uentryList_elements (params, current) | |
1793 | { | |
1794 | uentry_setParam (current); | |
1795 | uentry_setSref (current, sRef_makeParam (paramno, ctype_unknown)); | |
1796 | paramno++; | |
1797 | } end_uentryList_elements; | |
1798 | ||
1799 | setGenericParamList (params); | |
1800 | g_expectingTypeName = TRUE; | |
1801 | ||
1802 | return params; | |
1803 | } | |
1804 | ||
1805 | /*@dependent@*/ uentryList handleParamTypeList (/*@returned@*/ uentryList params) | |
1806 | { | |
1807 | if (flipOldStyle) | |
1808 | { | |
1809 | uentryList_fixMissingNames (params); | |
1810 | ||
1811 | voptgenerror (FLG_OLDSTYLE, | |
1812 | cstring_makeLiteral ("Old style function declaration."), | |
1813 | g_currentloc); | |
1814 | ||
1815 | setGenericParamList (params); | |
1816 | flipOldStyle = FALSE; | |
1817 | g_expectingTypeName = TRUE; | |
1818 | } | |
1819 | ||
1820 | return (params); | |
1821 | } | |
1822 | ||
1823 | void | |
1824 | doVaDcl () | |
1825 | { | |
1826 | ctype c = ctype_unknown; | |
1827 | cstring id = cstring_makeLiteral ("va_alist"); | |
1828 | uentry e; | |
1829 | ||
1830 | if (ProcessingParams) | |
1831 | { | |
1832 | int i = uentryList_lookupRealName (saveParamList, id); | |
1833 | ||
1834 | if (i >= 0) | |
1835 | { | |
1836 | e = uentry_makeVariableSrefParam (id, c, sRef_makeParam (i, c)); | |
1837 | } | |
1838 | else | |
1839 | { | |
1840 | e = uentry_undefined; /* suppress gcc message */ | |
1841 | llfatalerrorLoc (cstring_makeLiteral ("va_dcl used without va_alist")); | |
1842 | } | |
1843 | } | |
1844 | else | |
1845 | { | |
1846 | llerror (FLG_SYNTAX, cstring_makeLiteral ("va_dcl used outside of function declaration")); | |
1847 | e = uentry_makeVariableLoc (id, c); | |
1848 | } | |
1849 | ||
1850 | cstring_free (id); | |
1851 | uentry_setUsed (e, g_currentloc); | |
1852 | usymtab_supEntrySref (e); | |
1853 | } | |
1854 | ||
28bf4b0b | 1855 | /*@exposed@*/ sRef modListPointer (/*@exposed@*/ sRef s) |
616915dd | 1856 | { |
1857 | ctype ct = sRef_getType (s); | |
1858 | ctype rt = ctype_realType (ct); | |
1859 | ||
1860 | if (ctype_isAP (rt)) | |
1861 | { | |
1862 | if (context_inHeader () && ctype_isAbstract (ct)) | |
1863 | { | |
1864 | voptgenerror | |
1865 | (FLG_ABSTRACT, | |
1866 | message | |
1867 | ("Modifies clause in header file dereferences abstract " | |
1868 | "type %s (interface modifies clause should not depend " | |
1869 | "on or expose type representation): %q", | |
1870 | ctype_unparse (ct), | |
1871 | sRef_unparse (s)), | |
1872 | g_currentloc); | |
1873 | } | |
1874 | ||
1875 | return (sRef_constructPointer (s)); | |
1876 | } | |
1877 | else | |
1878 | { | |
1879 | if (ctype_isKnown (rt)) | |
1880 | { | |
1881 | voptgenerror | |
1882 | (FLG_TYPE, | |
1883 | message ("Implementation modifies clause dereferences non-pointer (type %s): %q", | |
1884 | ctype_unparse (rt), | |
1885 | sRef_unparse (s)), | |
1886 | g_currentloc); | |
1887 | } | |
1888 | ||
1889 | return s; | |
1890 | } | |
1891 | } | |
1892 | ||
1893 | /*@exposed@*/ sRef modListFieldAccess (sRef s, cstring f) | |
1894 | { | |
1895 | ctype ct = sRef_getType (s); | |
1896 | ctype rt = ctype_realType (ct); | |
1897 | ||
1898 | if (ctype_isStructorUnion (rt)) | |
1899 | { | |
1900 | uentry tf = uentryList_lookupField (ctype_getFields (rt), f); | |
1901 | ||
1902 | if (uentry_isUndefined (tf)) | |
1903 | { | |
1904 | voptgenerror (FLG_TYPE, | |
1905 | message ("Modifies list accesses non-existent " | |
1906 | "field %s of %t: %q", f, ct, | |
1907 | sRef_unparse (s)), | |
1908 | g_currentloc); | |
1909 | ||
1910 | cstring_free (f); | |
1911 | return sRef_undefined; | |
1912 | } | |
1913 | else | |
1914 | { | |
1915 | if (ctype_isAbstract (ct) && context_inHeader ()) | |
1916 | { | |
1917 | voptgenerror | |
1918 | (FLG_ABSTRACT, | |
1919 | message | |
1920 | ("Modifies clause in header file accesses abstract " | |
1921 | "type %s (interface modifies clause should not depend " | |
1922 | "on or expose type representation): %q", | |
1923 | ctype_unparse (ct), | |
1924 | sRef_unparse (s)), | |
1925 | g_currentloc); | |
1926 | } | |
1927 | } | |
1928 | ||
1929 | cstring_markOwned (f); | |
1930 | return (sRef_makeField (s, f)); | |
1931 | } | |
1932 | else | |
1933 | { | |
1934 | voptgenerror | |
1935 | (FLG_TYPE, | |
1936 | message ("Modifies clause dereferences non-pointer (type %s): %q", | |
1937 | ctype_unparse (rt), | |
1938 | sRef_unparse (s)), | |
1939 | g_currentloc); | |
1940 | ||
1941 | cstring_free (f); | |
1942 | return s; | |
1943 | } | |
1944 | } | |
1945 | ||
28bf4b0b | 1946 | /*@dependent@*/ sRef clabstract_unrecognizedGlobal (cstring s) |
616915dd | 1947 | { |
1948 | if (cstring_equalLit (s, "nothing")) | |
1949 | { | |
1950 | return sRef_makeNothing (); | |
1951 | } | |
1952 | else if (cstring_equalLit (s, "internalState")) | |
1953 | { | |
1954 | return sRef_makeInternalState (); | |
1955 | } | |
1956 | else if (cstring_equalLit (s, "fileSystem") | |
1957 | || cstring_equalLit (s, "systemState")) | |
1958 | { | |
1959 | return sRef_makeSystemState (); | |
1960 | } | |
1961 | else | |
1962 | { | |
1963 | voptgenerror | |
1964 | (FLG_UNRECOG, | |
1965 | message ("Unrecognized identifier in globals list: %s", s), | |
1966 | g_currentloc); | |
1967 | ||
1968 | return sRef_undefined; | |
1969 | } | |
1970 | } | |
1971 | ||
1972 | /*@exposed@*/ sRef modListArrowAccess (sRef s, cstring f) | |
1973 | { | |
1974 | ctype ct = sRef_getType (s); | |
1975 | ctype rt = ctype_realType (ct); | |
1976 | ||
1977 | if (ctype_isRealPointer (rt)) | |
1978 | { | |
1979 | ctype b = ctype_baseArrayPtr (rt); | |
1980 | ctype rb = ctype_realType (b); | |
1981 | ||
1982 | if (ctype_isStructorUnion (rb)) | |
1983 | { | |
1984 | uentry tf = uentryList_lookupField (ctype_getFields (rb), f); | |
1985 | ||
1986 | if (uentry_isUndefined (tf)) | |
1987 | { | |
1988 | voptgenerror (FLG_TYPE, | |
1989 | message ("Modifies list arrow accesses non-existent " | |
1990 | "field %s of %t: %q", f, b, | |
1991 | sRef_unparse (s)), | |
1992 | g_currentloc); | |
1993 | ||
1994 | cstring_free (f); | |
1995 | return sRef_undefined; | |
1996 | } | |
1997 | else | |
1998 | { | |
1999 | if (context_inHeader ()) | |
2000 | { | |
2001 | if (ctype_isAbstract (b)) | |
2002 | { | |
2003 | voptgenerror | |
2004 | (FLG_ABSTRACT, | |
2005 | message | |
2006 | ("Modifies clause in header file arrow accesses abstract " | |
2007 | "type %s (interface modifies clause should not depend " | |
2008 | "on or expose type representation): %q", | |
2009 | ctype_unparse (b), | |
2010 | sRef_unparse (s)), | |
2011 | g_currentloc); | |
2012 | } | |
2013 | } | |
2014 | else | |
2015 | { | |
2016 | if (ctype_isAbstract (ct)) | |
2017 | { | |
2018 | voptgenerror | |
2019 | (FLG_ABSTRACT, | |
2020 | message | |
2021 | ("Modifies clause in header file arrow accesses abstract " | |
2022 | "type %s (interface modifies clause should not depend " | |
2023 | "on or expose type representation): %q", | |
2024 | ctype_unparse (ct), | |
2025 | sRef_unparse (s)), | |
2026 | g_currentloc); | |
2027 | } | |
2028 | } | |
2029 | } | |
2030 | ||
2031 | cstring_markOwned (f); | |
2032 | return (sRef_makeArrow (s, f)); | |
2033 | } | |
2034 | else | |
2035 | { | |
2036 | voptgenerror | |
2037 | (FLG_TYPE, | |
2038 | message ("Modifies clause arrow accesses pointer to " | |
2039 | "non-structure (type %s): %q", | |
2040 | ctype_unparse (rt), | |
2041 | sRef_unparse (s)), | |
2042 | g_currentloc); | |
2043 | } | |
2044 | } | |
2045 | else | |
2046 | { | |
2047 | voptgenerror | |
2048 | (FLG_TYPE, | |
2049 | message ("Modifies clause arrow accesses non-pointer (type %s): %q", | |
2050 | ctype_unparse (rt), | |
2051 | sRef_unparse (s)), | |
2052 | g_currentloc); | |
2053 | } | |
2054 | ||
2055 | cstring_free (f); | |
2056 | return s; | |
2057 | } | |
2058 | ||
28bf4b0b | 2059 | sRef checkStateClausesId (uentry ue) |
616915dd | 2060 | { |
2061 | cstring s = uentry_rawName (ue); | |
2062 | ||
28bf4b0b | 2063 | if (sRef_isFileOrGlobalScope (uentry_getSref (ue))) |
616915dd | 2064 | { |
2065 | voptgenerror | |
28bf4b0b | 2066 | (FLG_COMMENTERROR, |
616915dd | 2067 | message ("Global variable %s used special clause. (Global variables " |
2068 | "are not recognized in special clauses. If there is " | |
2069 | "sufficient interest in support for this, it may be " | |
2070 | "added to a future release. Send mail to " | |
2071 | "lclint@cs.virginia.edu.)", | |
2072 | s), | |
2073 | g_currentloc); | |
2074 | ||
2075 | return sRef_undefined; | |
2076 | } | |
2077 | else | |
2078 | { | |
2079 | if (cstring_equalLit (s, "result")) | |
2080 | { | |
2081 | if (optgenerror | |
2082 | (FLG_SYNTAX, | |
2083 | message ("Special clause list uses %s which is a variable and has special " | |
2084 | "meaning in a modifies list. (Special meaning assumed.)", s), | |
2085 | g_currentloc)) | |
2086 | { | |
2087 | uentry_showWhereDeclared (ue); | |
2088 | } | |
2089 | } | |
2090 | ||
2091 | return uentry_getSref (ue); | |
2092 | } | |
2093 | } | |
9280addf | 2094 | /*drl:1/19/2001 |
2095 | oops to 1/8/2000 | |
2096 | date is wronge .. | |
2097 | don;t know what the real date is... | |
2098 | ||
2099 | */ | |
616915dd | 2100 | |
2101 | /*drl | |
2102 | added 1/8/2000 | |
2103 | based on checkSpecClausesId | |
2104 | called by grammar | |
2105 | */ | |
2106 | sRef checkbufferConstraintClausesId (uentry ue) | |
2107 | { | |
2108 | cstring s = uentry_rawName (ue); | |
2109 | if (cstring_equalLit (s, "result")) | |
2110 | { | |
2111 | if (optgenerror | |
2112 | (FLG_SYNTAX, | |
2113 | message ("Special clause list uses %s which is a variable and has special " | |
2114 | "meaning in a modifies list. (Special meaning assumed.)", s), | |
2115 | g_currentloc)) | |
2116 | { | |
2117 | uentry_showWhereDeclared (ue); | |
2118 | } | |
2119 | } | |
2120 | ||
28bf4b0b | 2121 | return sRef_saveCopy( uentry_getSref (ue) ); |
616915dd | 2122 | } |
2123 | ||
2124 | void checkModifiesId (uentry ue) | |
2125 | { | |
2126 | cstring s = uentry_rawName (ue); | |
2127 | ||
2128 | if (cstring_equalLit (s, "nothing") | |
2129 | || cstring_equalLit (s, "internalState") | |
2130 | || cstring_equalLit (s, "systemState") | |
2131 | || (cstring_equalLit (s, "fileSystem"))) | |
2132 | { | |
2133 | if (optgenerror | |
2134 | (FLG_SYNTAX, | |
2135 | message ("Modifies list uses %s which is a variable and has special " | |
2136 | "meaning in a modifies list. (Special meaning assumed.)", s), | |
2137 | g_currentloc)) | |
2138 | { | |
2139 | uentry_showWhereDeclared (ue); | |
2140 | } | |
2141 | } | |
2142 | } | |
2143 | ||
2144 | /*@exposed@*/ sRef fixModifiesId (cstring s) | |
2145 | { | |
2146 | sRef ret; | |
2147 | cstring pname = makeParam (s); | |
2148 | uentry ue = usymtab_lookupSafe (pname); | |
2149 | ||
2150 | cstring_free (pname); | |
2151 | ||
2152 | if (cstring_equalLit (s, "nothing")) | |
2153 | { | |
2154 | ret = sRef_makeNothing (); | |
2155 | } | |
2156 | else if (cstring_equalLit (s, "internalState")) | |
2157 | { | |
2158 | ret = sRef_makeInternalState (); | |
2159 | } | |
2160 | else if (cstring_equalLit (s, "fileSystem") | |
2161 | || cstring_equalLit (s, "systemState")) | |
2162 | { | |
2163 | ret = sRef_makeSystemState (); | |
2164 | } | |
2165 | else | |
2166 | { | |
2167 | ret = sRef_undefined; | |
2168 | } | |
2169 | ||
2170 | if (sRef_isValid (ret)) | |
2171 | { | |
2172 | if (uentry_isValid (ue)) | |
2173 | { | |
2174 | voptgenerror | |
2175 | (FLG_SYNTAX, | |
2176 | message ("Modifies list uses %s which is a parameter and has special " | |
2177 | "meaning in a modifies list. (Special meaning assumed.)", s), | |
2178 | g_currentloc); | |
2179 | } | |
2180 | } | |
2181 | else | |
2182 | { | |
2183 | if (uentry_isValid (ue)) | |
2184 | { | |
2185 | ret = uentry_getSref (ue); | |
2186 | } | |
2187 | else | |
2188 | { | |
2189 | fileloc loc = fileloc_decColumn (g_currentloc, cstring_length (s)); | |
2190 | ret = sRef_undefined; | |
2191 | ||
2192 | voptgenerror | |
2193 | (FLG_UNRECOG, | |
2194 | message ("Unrecognized identifier in modifies comment: %s", s), | |
2195 | loc); | |
2196 | ||
2197 | fileloc_free (loc); | |
2198 | } | |
2199 | } | |
2200 | ||
2201 | return ret; | |
2202 | } | |
2203 | ||
28bf4b0b | 2204 | sRef fixStateClausesId (cstring s) |
616915dd | 2205 | { |
2206 | sRef ret; | |
2207 | cstring pname = makeParam (s); | |
2208 | uentry ue = usymtab_lookupSafe (pname); | |
2209 | ||
2210 | cstring_free (pname); | |
2211 | ||
2212 | if (cstring_equalLit (s, "result")) | |
2213 | { | |
2214 | ret = sRef_makeResult (); | |
2215 | } | |
2216 | else | |
2217 | { | |
2218 | ret = sRef_undefined; | |
2219 | } | |
2220 | ||
2221 | if (sRef_isValid (ret)) | |
2222 | { | |
2223 | if (uentry_isValid (ue)) | |
2224 | { | |
2225 | voptgenerror | |
2226 | (FLG_SYNTAX, | |
2227 | message ("Special clause uses %s which is a parameter and has special " | |
2228 | "meaning in a special clause. (Special meaning assumed.)", s), | |
2229 | g_currentloc); | |
2230 | } | |
2231 | } | |
2232 | else | |
2233 | { | |
2234 | if (uentry_isValid (ue)) | |
2235 | { | |
2236 | ret = uentry_getSref (ue); | |
2237 | ||
28bf4b0b | 2238 | if (sRef_isFileOrGlobalScope (ret)) |
616915dd | 2239 | { |
2240 | voptgenerror | |
2241 | (FLG_SYNTAX, | |
2242 | message ("Global variable %s used special clause. (Global variables " | |
2243 | "are not recognized in special clauses. If there is " | |
2244 | "sufficient interest in support for this, it may be " | |
2245 | "added to a future release. Send mail to " | |
2246 | "lclint@cs.virginia.edu.)", | |
2247 | s), | |
2248 | g_currentloc); | |
2249 | ||
2250 | ret = sRef_undefined; | |
2251 | } | |
2252 | } | |
2253 | else | |
2254 | { | |
2255 | fileloc loc = fileloc_decColumn (g_currentloc, cstring_length (s)); | |
2256 | ret = sRef_undefined; | |
2257 | ||
2258 | voptgenerror | |
2259 | (FLG_UNRECOG, | |
2260 | message ("Unrecognized identifier in special clause: %s", s), | |
2261 | loc); | |
2262 | ||
2263 | fileloc_free (loc); | |
2264 | } | |
2265 | } | |
2266 | ||
2267 | return ret; | |
2268 | } | |
2269 | ||
28bf4b0b | 2270 | sRef modListArrayFetch (/*@exposed@*/ sRef s, /*@unused@*/ sRef mexp) |
616915dd | 2271 | { |
2272 | ctype ct = sRef_getType (s); | |
2273 | ctype rt = ctype_realType (ct); | |
2274 | ||
2275 | if (ctype_isAP (rt)) | |
2276 | { | |
2277 | if (context_inHeader () && ctype_isAbstract (ct)) | |
2278 | { | |
2279 | voptgenerror | |
2280 | (FLG_ABSTRACT, | |
2281 | message | |
2282 | ("Modifies clause in header file indexes abstract " | |
2283 | "type %s (interface modifies clause should not depend " | |
2284 | "on or expose type representation): %q", | |
2285 | ctype_unparse (ct), | |
2286 | sRef_unparse (s)), | |
2287 | g_currentloc); | |
2288 | } | |
2289 | ||
2290 | return (sRef_makeAnyArrayFetch (s)); | |
2291 | } | |
2292 | else | |
2293 | { | |
2294 | voptgenerror | |
2295 | (FLG_TYPE, | |
2296 | message | |
2297 | ("Implementation modifies clause uses array fetch on non-array (type %s): %q", | |
2298 | ctype_unparse (ct), sRef_unparse (s)), | |
2299 | g_currentloc); | |
2300 | return s; | |
2301 | } | |
2302 | } | |
2303 | ||
28bf4b0b | 2304 | static void clabstract_prepareFunction (uentry e) |
2305 | { | |
2306 | uentry_checkParams (e); | |
2307 | DPRINTF (("After prepare: %s", uentry_unparseFull (e))); | |
2308 | } | |
2309 | ||
2310 | sRef clabstract_checkGlobal (exprNode e) | |
2311 | { | |
2312 | sRef s; | |
2313 | llassert (exprNode_isInitializer (e)); | |
2314 | ||
2315 | s = exprNode_getSref (e); | |
2316 | DPRINTF (("Initializer: %s -> %s", exprNode_unparse (e), sRef_unparse (s))); | |
2317 | ||
2318 | exprNode_free (e); | |
2319 | return sRef_copy (s); | |
2320 | } | |
2321 | ||
616915dd | 2322 | |
2323 | ||
2324 | ||
2325 | ||
2326 | ||
2327 | ||
2328 |