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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 | ||
470b7798 | 54 | /*drl */ |
2934b455 | 55 | static /*@only@*/ constraintList implicitFcnConstraints = NULL; |
470b7798 | 56 | |
57 | ||
616915dd | 58 | //static constraintList fcnPreConditions = NULL; |
59 | ||
28bf4b0b | 60 | static void clabstract_prepareFunction (uentry p_e) /*@modifies p_e@*/ ; |
616915dd | 61 | static bool fcnNoGlobals = FALSE; |
62 | static bool ProcessingVars = FALSE; | |
63 | static bool ProcessingParams = FALSE; | |
64 | static bool ProcessingGlobals = FALSE; | |
65 | static bool ProcessingTypedef = FALSE; | |
66 | static bool ProcessingIterVars = FALSE; | |
67 | static /*@only@*/ qtype processingType = qtype_undefined; | |
68 | static uentry currentIter = uentry_undefined; | |
616915dd | 69 | static /*@dependent@*/ uentryList saveParamList; /* for old style functions */ |
70 | static /*@owned@*/ uentry saveFunction = uentry_undefined; | |
71 | static int saveIterParamNo; | |
72 | static idDecl fixStructDecl (/*@returned@*/ idDecl p_d); | |
73 | static void checkTypeDecl (uentry p_e, ctype p_rep); | |
74 | static /*@dependent@*/ fileloc saveStoreLoc = fileloc_undefined; | |
75 | static storageClassCode storageClass = SCNONE; | |
76 | static void declareEnumList (/*@temp@*/ enumNameList p_el, ctype p_c, fileloc p_loc); | |
77 | static void resetGlobals (void); | |
28bf4b0b | 78 | static /*@null@*/ qual specialFunctionCode; |
616915dd | 79 | static bool argsUsed = FALSE; |
80 | ||
28bf4b0b | 81 | extern void clabstract_initMod () |
82 | { | |
83 | specialFunctionCode = qual_createUnknown (); | |
84 | DPRINTF (("Initialized: %s", qual_unparse (specialFunctionCode))); | |
85 | } | |
86 | ||
616915dd | 87 | static bool hasSpecialCode (void) |
88 | { | |
28bf4b0b | 89 | return (!qual_isUnknown (specialFunctionCode)); |
616915dd | 90 | } |
91 | ||
92 | extern void setArgsUsed (void) | |
93 | { | |
94 | if (argsUsed) | |
95 | { | |
96 | voptgenerror | |
97 | (FLG_SYNTAX, | |
98 | cstring_makeLiteral ("Multiple ARGSUSED comments for one function"), | |
99 | g_currentloc); | |
100 | } | |
101 | ||
102 | argsUsed = TRUE; | |
103 | } | |
104 | ||
105 | static void reflectArgsUsed (uentry ue) | |
106 | { | |
107 | if (argsUsed) | |
108 | { | |
109 | if (uentry_isFunction (ue)) | |
110 | { | |
111 | uentryList params = uentry_getParams (ue); | |
112 | ||
113 | uentryList_elements (params, el) | |
114 | { | |
115 | uentry_setUsed (el, fileloc_undefined); | |
116 | } end_uentryList_elements ; | |
117 | } | |
118 | ||
119 | argsUsed = FALSE; | |
120 | } | |
121 | } | |
122 | ||
123 | extern void setSpecialFunction (qual qu) | |
124 | { | |
28bf4b0b | 125 | if (!qual_isUnknown (specialFunctionCode)) |
616915dd | 126 | { |
127 | voptgenerror (FLG_SYNTAX, | |
128 | message ("Multiple special function codes: %s, %s " | |
129 | "(first code is ignored)", | |
130 | qual_unparse (specialFunctionCode), | |
131 | qual_unparse (qu)), | |
132 | g_currentloc); | |
133 | } | |
134 | ||
135 | specialFunctionCode = qu; | |
136 | } | |
137 | ||
138 | static void reflectSpecialCode (uentry ue) | |
139 | { | |
28bf4b0b | 140 | if (qual_isUnknown (specialFunctionCode)) { |
141 | ; | |
142 | } else if (qual_isPrintfLike (specialFunctionCode)) { | |
143 | uentry_setPrintfLike (ue); | |
144 | } else if (qual_isScanfLike (specialFunctionCode)) { | |
145 | uentry_setScanfLike (ue); | |
146 | } else if (qual_isMessageLike (specialFunctionCode)) { | |
147 | uentry_setMessageLike (ue); | |
148 | } else { | |
149 | BADBRANCH; | |
150 | } | |
616915dd | 151 | |
28bf4b0b | 152 | specialFunctionCode = qual_createUnknown (); |
616915dd | 153 | } |
154 | ||
155 | static void resetStorageClass (void) | |
156 | { | |
157 | qtype_free (processingType); | |
158 | processingType = qtype_undefined; | |
159 | storageClass = SCNONE; | |
160 | } | |
161 | ||
616915dd | 162 | static void reflectStorageClass (uentry u) |
163 | { | |
164 | if (storageClass == SCSTATIC) | |
165 | { | |
166 | uentry_setStatic (u); | |
167 | } | |
168 | else if (storageClass == SCEXTERN) | |
169 | { | |
170 | uentry_setExtern (u); | |
171 | } | |
172 | else | |
173 | { | |
174 | ; /* no storage class */ | |
175 | } | |
176 | ||
177 | } | |
178 | ||
179 | void storeLoc () | |
180 | { | |
181 | saveStoreLoc = g_currentloc; | |
182 | } | |
183 | ||
184 | void setFunctionNoGlobals (void) | |
185 | { | |
616915dd | 186 | fcnNoGlobals = TRUE; |
187 | } | |
188 | ||
616915dd | 189 | static void reflectGlobalQualifiers (sRef sr, qualList quals) |
190 | { | |
28bf4b0b | 191 | DPRINTF (("Reflect global qualifiers: %s / %s", |
192 | sRef_unparseFull (sr), qualList_unparse (quals))); | |
193 | ||
616915dd | 194 | qualList_elements (quals, qel) |
195 | { | |
196 | if (qual_isGlobalQual (qel)) /* undef, killed */ | |
197 | { | |
198 | sstate oldstate = sRef_getDefState (sr); | |
199 | sstate defstate = sstate_fromQual (qel); | |
200 | ||
201 | if ((oldstate == SS_UNDEFGLOB && defstate == SS_KILLED) | |
202 | || (oldstate == SS_KILLED && defstate == SS_UNDEFGLOB)) | |
203 | { | |
204 | defstate = SS_UNDEFKILLED; | |
205 | } | |
206 | else | |
207 | { | |
208 | ; /* any errors? */ | |
209 | } | |
210 | ||
211 | sRef_setDefState (sr, defstate, fileloc_undefined); | |
28bf4b0b | 212 | DPRINTF (("State: %s", sRef_unparseFull (sr))); |
616915dd | 213 | } |
214 | else if (qual_isAllocQual (qel)) /* out, partial, reldef, etc. */ | |
215 | { | |
216 | ctype realType = sRef_getType (sr); | |
217 | sstate defstate = sstate_fromQual (qel); | |
218 | ||
219 | if (qual_isRelDef (qel)) | |
220 | { | |
221 | ; /* okay anywhere */ | |
222 | } | |
223 | else | |
224 | { | |
225 | if (!ctype_isAP (realType) | |
226 | && !ctype_isSU (realType) | |
227 | && !ctype_isUnknown (realType) | |
228 | && !ctype_isAbstract (sRef_getType (sr))) | |
229 | { | |
230 | llerror | |
231 | (FLG_SYNTAX, | |
232 | message ("Qualifier %s used on non-pointer or struct: %q", | |
233 | qual_unparse (qel), sRef_unparse (sr))); | |
234 | ||
235 | } | |
236 | } | |
237 | ||
238 | sRef_setDefState (sr, defstate, fileloc_undefined); | |
239 | } | |
240 | else if (qual_isNull (qel)) | |
241 | { | |
242 | sRef_setNullState (sr, NS_POSNULL, fileloc_undefined); | |
243 | } | |
244 | else if (qual_isRelNull (qel)) | |
245 | { | |
246 | sRef_setNullState (sr, NS_RELNULL, fileloc_undefined); | |
247 | } | |
248 | else if (qual_isNotNull (qel)) | |
249 | { | |
250 | sRef_setNullState (sr, NS_MNOTNULL, fileloc_undefined); | |
251 | } | |
252 | else | |
253 | { | |
254 | if (qual_isCQual (qel)) | |
255 | { | |
256 | ; /* okay */ | |
257 | } | |
258 | else | |
259 | { | |
260 | llerror (FLG_SYNTAX, | |
261 | message ("Qualifier %s cannot be used in a globals list", | |
262 | qual_unparse (qel))); | |
263 | } | |
264 | } | |
265 | } end_qualList_elements; | |
266 | } | |
267 | ||
28bf4b0b | 268 | sRef clabstract_createGlobal (sRef sr, qualList quals) |
616915dd | 269 | { |
28bf4b0b | 270 | sRef res; |
271 | ||
616915dd | 272 | if (sRef_isValid (sr)) |
273 | { | |
28bf4b0b | 274 | res = sRef_copy (sr); |
275 | DPRINTF (("Reflecting quals: %s / %s", sRef_unparse (sr), qualList_unparse (quals))); | |
276 | reflectGlobalQualifiers (res, quals); | |
277 | DPRINTF (("==> %s", sRef_unparseFull (res))); | |
616915dd | 278 | } |
28bf4b0b | 279 | else |
280 | { | |
281 | res = sRef_undefined; | |
282 | } | |
283 | ||
284 | qualList_free (quals); | |
285 | return res; | |
616915dd | 286 | } |
287 | ||
288 | extern void declareCIter (cstring name, /*@owned@*/ uentryList params) | |
289 | { | |
290 | uentry ue; | |
291 | ||
292 | ue = uentry_makeIter (name, | |
293 | ctype_makeFunction (ctype_void, params), | |
294 | fileloc_copy (g_currentloc)); | |
295 | ||
296 | usymtab_supEntry (uentry_makeEndIter (name, fileloc_copy (g_currentloc))); | |
616915dd | 297 | ue = usymtab_supGlobalEntryReturn (ue); |
298 | } | |
299 | ||
300 | extern void nextIterParam (void) | |
301 | { | |
302 | llassert (ProcessingIterVars); | |
303 | saveIterParamNo++; | |
304 | } | |
305 | ||
306 | extern int iterParamNo (void) | |
307 | { | |
308 | llassert (ProcessingIterVars); | |
309 | return saveIterParamNo; | |
310 | } | |
311 | ||
312 | /* | |
313 | ** yucky hacks to put it in the right place | |
314 | */ | |
315 | ||
316 | /*@only@*/ uentry | |
317 | makeCurrentParam (idDecl t) | |
318 | { | |
319 | uentry ue; | |
320 | ||
321 | saveStoreLoc = fileloc_undefined; | |
322 | ||
323 | /* param number unknown */ | |
324 | ||
325 | ue = uentry_makeParam (t, 0); | |
326 | return ue; | |
327 | } | |
328 | ||
329 | ctype | |
330 | declareUnnamedEnum (enumNameList el) | |
331 | { | |
332 | ctype ret = usymtab_enumEnumNameListType (el); | |
333 | ctype rt; | |
334 | uentry e; | |
335 | ||
336 | if (ctype_isDefined (ret)) | |
337 | { | |
338 | rt = ret; | |
339 | e = uentry_makeEnumTagLoc (ctype_enumTag (rt), ret); | |
340 | ||
341 | reflectStorageClass (e); | |
342 | usymtab_supGlobalEntry (e); | |
343 | ||
344 | declareEnumList (el, ret, g_currentloc); | |
345 | enumNameList_free (el); | |
346 | } | |
347 | else | |
348 | { | |
349 | ctype ct = ctype_createEnum (fakeTag (), el); | |
350 | ||
351 | e = uentry_makeEnumTagLoc (ctype_enumTag (ctype_realType (ct)), ct); | |
352 | reflectStorageClass (e); | |
353 | ||
354 | e = usymtab_supGlobalEntryReturn (e); | |
355 | rt = uentry_getAbstractType (e); | |
356 | declareEnumList (el, ct, g_currentloc); | |
357 | } | |
358 | ||
359 | return (rt); | |
360 | } | |
361 | ||
362 | ctype | |
363 | declareEnum (cstring ename, enumNameList el) | |
364 | { | |
365 | ctype cet; | |
366 | uentry e; | |
367 | ||
368 | llassert (cstring_isDefined (ename)); | |
369 | ||
370 | cet = ctype_createEnum (ename, el); | |
371 | e = uentry_makeEnumTagLoc (ename, cet); | |
372 | reflectStorageClass (e); | |
373 | e = usymtab_supGlobalEntryReturn (e); | |
374 | cet = uentry_getType (e); | |
375 | declareEnumList (el, cet, uentry_whereLast (e)); | |
376 | return (uentry_getAbstractType (e)); | |
377 | } | |
378 | ||
379 | static void | |
380 | declareEnumList (enumNameList el, ctype c, fileloc loc) | |
381 | { | |
382 | bool boolnames = FALSE; | |
383 | bool othernames = FALSE; | |
384 | ||
385 | (void) context_getSaveLocation (); /* undefine it */ | |
386 | ||
387 | if (context_maybeSet (FLG_NUMENUMMEMBERS)) | |
388 | { | |
389 | int maxnum = context_getValue (FLG_NUMENUMMEMBERS); | |
390 | int num = enumNameList_size (el); | |
391 | ||
392 | if (num > maxnum) | |
393 | { | |
394 | voptgenerror | |
395 | (FLG_NUMENUMMEMBERS, | |
396 | message ("Enumerator %s declared with %d members (limit is set to %d)", | |
397 | ctype_unparse (c), num, maxnum), | |
398 | loc); | |
399 | } | |
400 | } | |
401 | ||
402 | enumNameList_elements (el, e) | |
403 | { | |
404 | uentry ue = usymtab_lookupExposeGlob (e); | |
405 | ctype ct = uentry_getType (ue); | |
406 | ||
407 | llassert (uentry_isEnumConstant (ue)); | |
408 | ||
409 | if (ctype_isUnknown (ct)) | |
410 | { | |
411 | uentry_setType (ue, c); | |
412 | } | |
413 | else | |
414 | { | |
415 | if (cstring_equal (e, context_getFalseName ()) | |
416 | || cstring_equal (e, context_getTrueName ())) | |
417 | { | |
418 | if (othernames) | |
419 | { | |
420 | if (optgenerror | |
421 | (FLG_INCONDEFS, | |
422 | message ("Enumerator mixes boolean name (%s) with " | |
423 | "non-boolean names", | |
424 | e), | |
425 | uentry_whereLast (ue))) | |
426 | { | |
427 | ; | |
428 | } | |
429 | } | |
430 | ||
431 | boolnames = TRUE; | |
432 | uentry_setType (ue, ctype_bool); | |
433 | DPRINTF (("Set type: %s / %s", | |
434 | uentry_unparse (ue), ctype_unparse (ctype_bool))); | |
435 | } | |
436 | else | |
437 | { | |
438 | if (boolnames) | |
439 | { | |
440 | if (optgenerror | |
441 | (FLG_INCONDEFS, | |
442 | message ("Enumerator mixes boolean names (%s, %s) with " | |
443 | "non-boolean name: %s", | |
444 | context_getTrueName (), | |
445 | context_getFalseName (), | |
446 | e), | |
447 | uentry_whereLast (ue))) | |
448 | { | |
449 | ; | |
450 | } | |
451 | } | |
452 | ||
453 | othernames = TRUE; | |
454 | } | |
455 | ||
456 | if (!ctype_match (c, ct)) | |
457 | { | |
458 | if (ctype_isDirectBool (ct)) | |
459 | { | |
460 | if (cstring_equal (e, context_getFalseName ()) | |
461 | || cstring_equal (e, context_getTrueName ())) | |
462 | { | |
463 | DPRINTF (("Here we are!")); | |
464 | } | |
465 | else | |
466 | { | |
467 | if (optgenerror | |
468 | (FLG_INCONDEFS, | |
469 | message ("Enumerator member %s declared with " | |
470 | "inconsistent type: %s", | |
471 | e, ctype_unparse (c)), | |
472 | uentry_whereLast (ue))) | |
473 | { | |
474 | uentry_showWhereSpecifiedExtra | |
475 | (ue, cstring_copy (ctype_unparse (ct))); | |
476 | } | |
477 | } | |
478 | } | |
479 | else | |
480 | { | |
481 | if (optgenerror | |
482 | (FLG_INCONDEFS, | |
483 | message ("Enumerator member %s declared with " | |
484 | "inconsistent type: %s", | |
485 | e, ctype_unparse (c)), | |
486 | uentry_whereLast (ue))) | |
487 | { | |
488 | uentry_showWhereSpecifiedExtra | |
489 | (ue, cstring_copy (ctype_unparse (ct))); | |
490 | } | |
491 | } | |
492 | } | |
493 | } | |
494 | } end_enumNameList_elements; | |
495 | } | |
496 | ||
497 | static /*@dependent@*/ uentryList currentParamList; | |
498 | ||
470b7798 | 499 | /*drl added 3-28-2001*/ |
500 | /* this function takes a list of paramentar and generates a list | |
501 | of constraints. | |
502 | Currently the only constraints gnerated are MaxSet(p) >= 0 for all pointers | |
503 | */ | |
2934b455 | 504 | |
c3e695ff | 505 | void setImplictfcnConstraints (void) |
470b7798 | 506 | { |
507 | uentryList params; | |
508 | sRef s; | |
509 | constraint c; | |
510 | params = currentParamList; | |
511 | ||
28bf4b0b | 512 | if (constraintList_isDefined(implicitFcnConstraints) ) |
bb25bea6 | 513 | constraintList_free(implicitFcnConstraints); |
514 | ||
c3e695ff | 515 | implicitFcnConstraints = constraintList_makeNew(); |
470b7798 | 516 | |
517 | uentryList_elements (params, el) | |
518 | { | |
519 | DPRINTF((message("setImplictfcnConstraints doing: %s", uentry_unparse(el) ) )); | |
520 | ||
521 | s = uentry_getSref(el); | |
522 | if (sRef_isReference (s) ) | |
523 | { | |
524 | DPRINTF((message ("%s is a pointer", sRef_unparse(s) ) )); | |
525 | } | |
526 | else | |
527 | { | |
528 | DPRINTF((message ("%s is NOT a pointer", sRef_unparse(s) ) )); | |
529 | } | |
530 | /*drl 4/26/01 | |
531 | chagned this is MaxSet(s) == 0 to MaxSet(s) >= 0 */ | |
532 | ||
533 | c = constraint_makeSRefWriteSafeInt (s, 0); | |
534 | // constraint_makeSRefSetBufferSize (s, 0); | |
535 | implicitFcnConstraints = constraintList_add(implicitFcnConstraints , c); | |
536 | } | |
537 | end_uentryList_elements; | |
538 | } | |
539 | ||
2934b455 | 540 | |
541 | /*@observer@*/ constraintList getImplicitFcnConstraints (void) | |
542 | { | |
543 | return implicitFcnConstraints; | |
544 | } | |
545 | ||
616915dd | 546 | void setCurrentParams (/*@dependent@*/ uentryList ue) |
547 | { | |
548 | currentParamList = ue; | |
549 | } | |
550 | ||
551 | void clearCurrentParams (void) | |
552 | { | |
553 | currentParamList = uentryList_undefined; | |
554 | } | |
555 | ||
556 | /* | |
557 | ** requires: uentry_isFunction (e) | |
558 | ** parameter names for current function are in currentParamList | |
559 | */ | |
560 | ||
561 | static void enterFunctionParams (uentryList params) | |
562 | { | |
563 | int paramno = 0; | |
564 | ||
565 | uentryList_elements (params, current) | |
566 | { | |
567 | if (uentry_hasName (current)) | |
568 | { | |
569 | uentry_setParamNo (current, paramno); | |
570 | usymtab_supEntry (uentry_copy (current)); | |
571 | } | |
572 | ||
573 | paramno++; | |
574 | } end_uentryList_elements; | |
575 | } | |
576 | ||
577 | ||
578 | extern void enterParamsTemp (void) | |
579 | { | |
580 | usymtab_enterScope (); | |
581 | enterFunctionParams (currentParamList); | |
582 | } | |
583 | ||
584 | extern void exitParamsTemp (void) | |
585 | { | |
586 | usymtab_quietPlainExitScope (); | |
587 | } | |
588 | ||
28bf4b0b | 589 | static /*@exposed@*/ uentry clabstract_globalDeclareFunction (idDecl tid) |
616915dd | 590 | { |
591 | ctype deftype = idDecl_getCtype (tid); | |
592 | ctype rettype; | |
593 | uentry ue; | |
594 | ||
595 | DPRINTF (("Global function: %s", idDecl_unparse (tid))); | |
28bf4b0b | 596 | |
616915dd | 597 | if (ctype_isFunction (deftype)) |
598 | { | |
28bf4b0b | 599 | rettype = ctype_getReturnType (deftype); |
616915dd | 600 | } |
601 | else | |
602 | { | |
603 | rettype = ctype_unknown; | |
604 | } | |
605 | ||
606 | /* | |
607 | ** check has been moved here... | |
608 | */ | |
609 | ||
610 | if (ctype_isFunction (idDecl_getCtype (tid))) | |
611 | { | |
612 | ue = uentry_makeIdFunction (tid); | |
613 | reflectSpecialCode (ue); | |
614 | reflectArgsUsed (ue); | |
615 | } | |
616 | else | |
617 | { | |
618 | llparseerror (message ("Inconsistent function declaration: %q", | |
619 | idDecl_unparse (tid))); | |
620 | ||
621 | tid = idDecl_replaceCtype | |
622 | (tid, ctype_makeFunction (ctype_unknown, uentryList_undefined)); | |
623 | ue = uentry_makeIdFunction (tid); | |
624 | } | |
616915dd | 625 | |
28bf4b0b | 626 | reflectStorageClass (ue); |
616915dd | 627 | uentry_checkParams (ue); |
28bf4b0b | 628 | |
629 | DPRINTF (("Supercede function: %s", uentry_unparseFull (ue))); | |
616915dd | 630 | |
631 | ue = usymtab_supGlobalEntryReturn (ue); | |
28bf4b0b | 632 | DPRINTF (("After supercede function: %s", uentry_unparseFull (ue))); |
633 | ||
616915dd | 634 | context_enterFunction (ue); |
635 | enterFunctionParams (uentry_getParams (ue)); | |
636 | ||
637 | resetStorageClass (); | |
28bf4b0b | 638 | DPRINTF (("Function: %s", uentry_unparseFull (ue))); |
616915dd | 639 | return (ue); |
640 | } | |
641 | ||
642 | /* | |
643 | ** for now, no type checking | |
644 | ** (must check later though!) | |
645 | */ | |
646 | ||
647 | static /*@only@*/ uentry globalDeclareOldStyleFunction (idDecl tid) | |
648 | { | |
649 | uentry ue; | |
650 | ||
651 | /* | |
652 | ** check has been moved here... | |
653 | */ | |
654 | ||
655 | if (cstring_equalLit (idDecl_observeId (tid), "main")) | |
656 | { | |
657 | context_setFlagTemp (FLG_MAINTYPE, FALSE); | |
658 | } | |
659 | ||
660 | ue = uentry_makeIdFunction (tid); | |
661 | reflectStorageClass (ue); | |
662 | reflectSpecialCode (ue); | |
663 | reflectArgsUsed (ue); | |
664 | uentry_setDefined (ue, g_currentloc); | |
28bf4b0b | 665 | uentry_checkParams (ue); |
616915dd | 666 | resetStorageClass (); |
667 | return (ue); | |
668 | } | |
669 | ||
670 | static void oldStyleDeclareFunction (/*@only@*/ uentry e) | |
671 | { | |
672 | uentryList params = saveParamList; | |
673 | ctype rt = uentry_getType (e); | |
674 | ||
675 | llassert (ctype_isFunction (rt)); | |
676 | ||
677 | e = usymtab_supGlobalEntryReturn (e); | |
678 | ||
679 | context_enterFunction (e); | |
680 | enterFunctionParams (params); | |
681 | saveParamList = uentryList_undefined; | |
682 | resetStorageClass (); | |
683 | } | |
684 | ||
28bf4b0b | 685 | void clabstract_declareFunction (idDecl tid) /*@globals undef saveFunction; @*/ |
616915dd | 686 | { |
687 | uentry ue; | |
688 | ||
689 | DPRINTF (("Declare function: %s", idDecl_unparse (tid))); | |
690 | ||
691 | if (ProcessingParams) | |
692 | { | |
693 | ue = globalDeclareOldStyleFunction (tid); | |
694 | saveFunction = ue; | |
695 | } | |
696 | else | |
697 | { | |
698 | saveFunction = uentry_undefined; | |
699 | ||
700 | if (context_inRealFunction ()) | |
701 | { | |
702 | ue = uentry_makeVariableLoc (idDecl_observeId (tid), ctype_unknown); | |
703 | ||
704 | llparseerror (message ("Function declared inside function: %q", | |
705 | idDecl_unparse (tid))); | |
706 | ||
707 | context_quietExitFunction (); | |
708 | ue = usymtab_supEntryReturn (ue); | |
709 | } | |
710 | else | |
711 | { | |
712 | if (context_inInnerScope ()) | |
713 | { | |
714 | llparseerror (message ("Declaration in inner context: %q", | |
715 | idDecl_unparse (tid))); | |
716 | ||
717 | sRef_setGlobalScope (); | |
718 | ue = uentry_makeVariableLoc (idDecl_observeId (tid), | |
719 | ctype_unknown); | |
720 | ue = usymtab_supGlobalEntryReturn (ue); | |
721 | sRef_clearGlobalScope (); | |
722 | } | |
723 | else | |
724 | { | |
28bf4b0b | 725 | ue = clabstract_globalDeclareFunction (tid); |
616915dd | 726 | } |
727 | } | |
728 | ||
729 | resetGlobals (); | |
730 | } | |
731 | ||
732 | resetStorageClass (); | |
733 | idDecl_free (tid); | |
734 | } | |
735 | ||
736 | void declareStaticFunction (idDecl tid) /*@globals undef saveFunction; @*/ | |
737 | { | |
738 | uentry ue; | |
739 | ||
740 | DPRINTF (("Declare static funciton: %s", idDecl_unparse (tid))); | |
741 | ||
742 | if (ProcessingParams) | |
743 | { | |
744 | ue = globalDeclareOldStyleFunction (tid); | |
745 | saveFunction = ue; | |
746 | } | |
747 | else | |
748 | { | |
749 | saveFunction = uentry_undefined; | |
750 | ||
751 | if (context_inRealFunction ()) | |
752 | { | |
753 | ue = uentry_makeVariableLoc (idDecl_observeId (tid), ctype_unknown); | |
754 | ||
755 | llparseerror (message ("Function declared inside function: %q", | |
756 | idDecl_unparse (tid))); | |
757 | ||
758 | context_quietExitFunction (); | |
759 | ue = usymtab_supEntryReturn (ue); | |
760 | } | |
761 | else | |
762 | { | |
763 | if (context_inInnerScope ()) | |
764 | { | |
765 | llparseerror (message ("Declaration in inner context: %q", | |
766 | idDecl_unparse (tid))); | |
767 | ||
768 | sRef_setGlobalScope (); | |
769 | ue = uentry_makeVariableLoc (idDecl_observeId (tid), | |
770 | ctype_unknown); | |
771 | ue = usymtab_supGlobalEntryReturn (ue); | |
772 | sRef_clearGlobalScope (); | |
773 | } | |
774 | else | |
775 | { | |
776 | ctype deftype = idDecl_getCtype (tid); | |
777 | ctype rettype; | |
778 | ||
779 | if (ctype_isFunction (deftype)) | |
780 | { | |
28bf4b0b | 781 | rettype = ctype_getReturnType (deftype); |
616915dd | 782 | } |
783 | else | |
784 | { | |
785 | rettype = ctype_unknown; | |
786 | } | |
787 | ||
788 | /* | |
789 | ** check has been moved here... | |
790 | */ | |
791 | ||
792 | if (ctype_isFunction (idDecl_getCtype (tid))) | |
793 | { | |
794 | ue = uentry_makeIdFunction (tid); | |
795 | reflectSpecialCode (ue); | |
796 | reflectArgsUsed (ue); | |
797 | } | |
798 | else | |
799 | { | |
800 | llparseerror (message ("Inconsistent function declaration: %q", | |
801 | idDecl_unparse (tid))); | |
802 | ||
803 | tid = idDecl_replaceCtype | |
804 | (tid, ctype_makeFunction (ctype_unknown, uentryList_undefined)); | |
805 | ue = uentry_makeIdFunction (tid); | |
806 | } | |
807 | ||
808 | reflectStorageClass (ue); | |
809 | uentry_setStatic (ue); | |
810 | ||
811 | uentry_checkParams (ue); | |
616915dd | 812 | |
813 | DPRINTF (("Sub global entry: %s", uentry_unparse (ue))); | |
814 | ue = usymtab_supGlobalEntryReturn (ue); | |
815 | ||
816 | context_enterFunction (ue); | |
817 | enterFunctionParams (uentry_getParams (ue)); | |
818 | resetStorageClass (); | |
819 | } | |
820 | } | |
821 | ||
822 | resetGlobals (); | |
823 | } | |
824 | ||
825 | resetStorageClass (); | |
826 | idDecl_free (tid); | |
827 | } | |
828 | ||
829 | void | |
830 | checkTypeDecl (uentry e, ctype rep) | |
831 | { | |
832 | cstring n = uentry_getName (e); | |
833 | ||
28bf4b0b | 834 | DPRINTF (("Check type decl: %s", uentry_unparseFull (e))); |
616915dd | 835 | |
836 | if (cstring_equal (context_getBoolName (), n)) | |
837 | { | |
838 | ctype rrep = ctype_realType (rep); | |
839 | ||
840 | /* | |
841 | ** for abstract enum types, we need to fix the enum members: | |
842 | ** they should have the abstract type, not the rep type. | |
843 | */ | |
844 | ||
845 | if (ctype_isEnum (ctype_realType (rrep))) | |
846 | { | |
847 | enumNameList el = ctype_elist (rrep); | |
848 | ||
849 | enumNameList_elements (el, ye) | |
850 | { | |
851 | if (usymtab_existsGlob (ye)) | |
852 | { | |
853 | uentry ue = usymtab_lookupSafe (ye); | |
854 | uentry_setType (ue, ctype_bool); | |
855 | } | |
856 | ||
857 | if (cstring_equal (context_getTrueName (), ye) | |
858 | || cstring_equal (context_getFalseName (), ye)) | |
859 | { | |
860 | ; | |
861 | } | |
862 | else | |
863 | { | |
864 | vgenhinterror | |
865 | (FLG_SYNTAX, | |
866 | message ("Member of boolean enumerated type definition " | |
867 | "does not match name set to represent TRUE " | |
868 | "or FALSE: %s", | |
869 | ye), | |
870 | message ("Use -boolfalse and -booltrue to set the " | |
871 | "name of false and true boolean values."), | |
872 | uentry_whereDefined (e)); | |
873 | } | |
874 | } end_enumNameList_elements; | |
875 | } | |
876 | } | |
877 | ||
878 | if (usymtab_exists (n)) | |
879 | { | |
880 | usymId llm = usymtab_getId (n); | |
881 | uentry le = usymtab_getTypeEntry (llm); | |
882 | ||
883 | uentry_setDeclared (e, g_currentloc); | |
884 | uentry_setSref (e, sRef_makeGlobal (llm, uentry_getType (le))); | |
885 | ||
886 | DPRINTF (("Here we are: %s / %s", | |
887 | n, context_getBoolName ())); | |
888 | ||
889 | if (uentry_isAbstractDatatype (le)) | |
890 | { | |
891 | ctype rrep = ctype_realType (rep); | |
892 | ||
28bf4b0b | 893 | DPRINTF (("Abstract type: %s", uentry_unparseFull (le))); |
894 | ||
616915dd | 895 | /* |
896 | ** for abstract enum types, we need to fix the enum members: | |
897 | ** they should have the abstract type, not the rep type. | |
898 | */ | |
899 | ||
900 | if (ctype_isEnum (ctype_realType (rrep))) | |
901 | { | |
902 | ctype at = uentry_getAbstractType (le); | |
903 | enumNameList el = ctype_elist (rrep); | |
904 | ||
905 | enumNameList_elements (el, ye) | |
906 | { | |
907 | if (usymtab_existsGlob (ye)) | |
908 | { | |
909 | uentry ue = usymtab_lookupSafe (ye); | |
910 | ||
911 | llassert (uentry_isEitherConstant (ue)); | |
912 | llassertprint (ctype_match (uentry_getType (ue), rrep), | |
913 | ("Bad enum: %s / %s", | |
914 | uentry_unparse (ue), | |
915 | ctype_unparse (rrep))); | |
916 | ||
917 | uentry_setType (ue, at); | |
918 | } | |
919 | } end_enumNameList_elements; | |
920 | } | |
921 | ||
922 | if (uentry_isMutableDatatype (le)) | |
923 | { | |
924 | /* maybe more complicated if abstract and immutable ? */ | |
925 | ||
926 | if (!ctype_isRealPointer (rep) && !ctype_isRealAbstract (rep)) | |
927 | { | |
928 | voptgenerror | |
929 | (FLG_MUTREP, | |
930 | message ("Mutable abstract type %s declared without pointer " | |
931 | "indirection: %s (violates assignment semantics)", | |
932 | n, ctype_unparse (rep)), | |
933 | uentry_whereDefined (e)); | |
934 | ||
935 | uentry_setMutable (e); | |
936 | } | |
937 | } | |
938 | } | |
939 | } | |
940 | else | |
941 | { | |
942 | fileloc fl = uentry_whereDeclared (e); | |
943 | ||
944 | if (context_getFlag (FLG_LIKELYBOOL) | |
945 | && !context_getFlag (FLG_BOOLINT)) | |
946 | { | |
947 | if ((cstring_equalLit (n, "BOOL") | |
948 | || cstring_equalLit (n, "Bool") | |
949 | || cstring_equalLit (n, "bool") | |
950 | || cstring_equalLit (n, "boolean") | |
951 | || cstring_equalLit (n, "Boolean") | |
952 | || cstring_equalLit (n, "BOOLEAN")) | |
953 | && !(cstring_equal (n, context_getBoolName ()))) | |
954 | { | |
955 | if (context_setBoolName ()) { | |
956 | voptgenerror | |
957 | (FLG_LIKELYBOOL, | |
958 | message ("Type %s is probably meant as a boolean type, but does " | |
959 | "not match the boolean type name \"%s\".", | |
960 | n, | |
961 | context_getBoolName ()), | |
962 | fl); | |
963 | } else | |
964 | voptgenerror | |
965 | (FLG_LIKELYBOOL, | |
966 | message ("Type %s is probably meant as a boolean type, " | |
967 | "but the boolean type name is not set. " | |
968 | "Use -booltype %s to set it.", | |
969 | n, | |
970 | n), | |
971 | fl); | |
972 | } | |
973 | } | |
974 | ||
975 | if (!uentry_isStatic (e) | |
976 | && !ctype_isFunction (uentry_getType (e)) | |
977 | && !fileloc_isLib (fl) | |
978 | && !fileloc_isImport (fl) | |
979 | && fileloc_isHeader (fl)) | |
980 | { | |
981 | voptgenerror (FLG_EXPORTTYPE, | |
982 | message ("Type exported, but not specified: %s\n", n), | |
983 | fl); | |
984 | } | |
985 | } | |
986 | ||
987 | cstring_free (n); | |
988 | } | |
989 | ||
990 | uentryList | |
991 | fixUentryList (idDeclList tl, qtype q) | |
992 | { | |
993 | uentryList f = uentryList_new (); | |
994 | ||
995 | idDeclList_elements (tl, i) | |
996 | { | |
997 | if (idDecl_isDefined (i)) | |
998 | { | |
999 | uentry ue; | |
1000 | uentry old; | |
1001 | ctype rt; | |
1002 | ||
1003 | (void) idDecl_fixBase (i, q); | |
1004 | ||
1005 | /* | |
1006 | ** implicit annotations | |
1007 | */ | |
1008 | ||
1009 | (void) fixStructDecl (i); | |
1010 | ||
1011 | ue = uentry_makeIdVariable (i); | |
1012 | rt = ctype_realType (uentry_getType (ue)); | |
1013 | ||
1014 | /* | |
1015 | ** where is this here??? | |
1016 | ||
1017 | if (ctype_isArray (rt) || ctype_isSU (rt)) | |
1018 | { | |
1019 | sRef_setAllocated (uentry_getSref (ue), uentry_whereDefined (ue)); | |
1020 | } | |
1021 | ||
1022 | ** | |
1023 | */ | |
1024 | ||
1025 | if (uentry_isValid (old = uentryList_lookupField (f, uentry_rawName (ue)))) | |
1026 | { | |
1027 | if (optgenerror (FLG_SYNTAX, | |
1028 | message ("Field name reused: %s", uentry_rawName (ue)), | |
1029 | uentry_whereDefined (ue))) | |
1030 | { | |
1031 | llgenmsg (message ("Previous use of %s", uentry_rawName (ue)), | |
1032 | uentry_whereDefined (old)); | |
1033 | } | |
1034 | } | |
1035 | ||
1036 | f = uentryList_add (f, ue); | |
1037 | } | |
1038 | } end_idDeclList_elements; | |
1039 | ||
1040 | idDeclList_free (tl); | |
1041 | return (f); | |
1042 | } | |
1043 | ||
1044 | /* | |
1045 | ** This is a hack to support unnamed struct/union fields as done by | |
1046 | ** Microsoft VC++. It is not supported by the ANSI standard. | |
1047 | ** | |
1048 | ** The inner fields are added to the outer structure. This is meaningful | |
1049 | ** for nesting structs inside unions, but lclint does no related | |
1050 | ** checking. | |
1051 | */ | |
1052 | ||
1053 | uentryList | |
1054 | fixUnnamedDecl (qtype q) | |
1055 | { | |
1056 | ctype ct = ctype_realType (qtype_getType (q)); | |
1057 | ||
1058 | if (ctype_isStruct (ct) || ctype_isUnion (ct)) | |
1059 | { | |
1060 | uentryList res = ctype_getFields (ct); | |
1061 | ||
1062 | return (uentryList_copy (res)); | |
1063 | } | |
1064 | else | |
1065 | { | |
1066 | BADBRANCHCONT; | |
1067 | } | |
1068 | ||
1069 | return uentryList_undefined; | |
1070 | } | |
1071 | ||
1072 | void setStorageClass (storageClassCode sc) | |
1073 | { | |
1074 | storageClass = sc; | |
1075 | } | |
1076 | ||
1077 | void | |
1078 | setProcessingIterVars (uentry iter) | |
1079 | { | |
1080 | ProcessingIterVars = TRUE; | |
1081 | currentIter = iter; | |
1082 | saveIterParamNo = 0; | |
1083 | } | |
1084 | ||
1085 | void | |
1086 | setProcessingGlobalsList () | |
1087 | { | |
1088 | ProcessingGlobals = TRUE; | |
616915dd | 1089 | fcnNoGlobals = FALSE; |
1090 | } | |
1091 | ||
1092 | static bool ProcessingGlobMods = FALSE; | |
1093 | ||
1094 | void | |
1095 | setProcessingGlobMods () | |
1096 | { | |
1097 | ProcessingGlobMods = TRUE; | |
1098 | } | |
1099 | ||
1100 | void | |
1101 | clearProcessingGlobMods () | |
1102 | { | |
1103 | ProcessingGlobMods = FALSE; | |
1104 | } | |
1105 | ||
1106 | bool | |
1107 | isProcessingGlobMods () | |
1108 | { | |
1109 | return (ProcessingGlobMods); | |
1110 | } | |
1111 | ||
1112 | static void resetGlobals (void) | |
1113 | { | |
1114 | ProcessingGlobals = FALSE; | |
616915dd | 1115 | fcnNoGlobals = FALSE; |
1116 | } | |
1117 | ||
1118 | void | |
1119 | unsetProcessingGlobals () | |
1120 | { | |
1121 | ProcessingGlobals = FALSE; | |
1122 | } | |
1123 | ||
1124 | void | |
1125 | setProcessingVars (/*@only@*/ qtype q) | |
1126 | { | |
1127 | ProcessingVars = TRUE; | |
1128 | qtype_free (processingType); | |
1129 | processingType = q; | |
1130 | } | |
1131 | ||
1132 | static void | |
1133 | setGenericParamList (/*@dependent@*/ uentryList pm) | |
1134 | { | |
1135 | ProcessingParams = TRUE; | |
1136 | saveParamList = pm; | |
1137 | } | |
1138 | ||
1139 | void | |
1140 | setProcessingTypedef (/*@only@*/ qtype q) | |
1141 | { | |
1142 | ProcessingTypedef = TRUE; | |
1143 | ||
1144 | qtype_free (processingType); | |
1145 | processingType = q; | |
1146 | } | |
1147 | ||
1148 | void | |
1149 | unsetProcessingVars () | |
1150 | { | |
1151 | resetStorageClass (); | |
1152 | ProcessingVars = FALSE; | |
1153 | } | |
1154 | ||
1155 | void | |
1156 | doneParams () | |
1157 | { | |
1158 | if (ProcessingParams) | |
1159 | { | |
1160 | if (uentry_isInvalid (saveFunction)) | |
1161 | { | |
1162 | llbuglit ("unsetProcessingVars: no saved function\n"); | |
616915dd | 1163 | } |
1164 | else | |
1165 | { | |
28bf4b0b | 1166 | ctype ct = ctype_getReturnType (uentry_getType (saveFunction)); |
616915dd | 1167 | uentryList params = uentryList_copy (saveParamList); |
1168 | ctype ct2 = ctype_makeFunction (ct, params); | |
1169 | ||
1170 | uentry_setType (saveFunction, ct2); | |
1171 | ProcessingParams = FALSE; | |
1172 | ||
616915dd | 1173 | oldStyleDeclareFunction (saveFunction); |
1174 | saveFunction = uentry_undefined; | |
1175 | resetGlobals (); | |
1176 | } | |
1177 | } | |
1178 | else | |
1179 | { | |
1180 | /* | |
1181 | ** If the paramlist used a type name, we could be here. | |
1182 | */ | |
1183 | ||
1184 | llfatalerror (message ("%q: Old-style function parameter list uses a " | |
1185 | "type name.", fileloc_unparse (g_currentloc))); | |
1186 | } | |
1187 | } | |
1188 | ||
1189 | void | |
1190 | checkDoneParams () | |
1191 | { | |
1192 | if (uentry_isValid (saveFunction)) | |
1193 | { | |
1194 | /* | |
1195 | ** old style declaration | |
1196 | */ | |
1197 | ||
28bf4b0b | 1198 | ctype ct = ctype_getReturnType (uentry_getType (saveFunction)); |
616915dd | 1199 | ctype ct2; |
1200 | ||
1201 | uentryList_elements (saveParamList, current) | |
1202 | { | |
1203 | uentry_setType (current, ctype_int); /* all params are ints */ | |
1204 | } end_uentryList_elements; | |
1205 | ||
1206 | ct2 = ctype_makeParamsFunction (ct, uentryList_copy (saveParamList)); | |
1207 | ||
1208 | uentry_setType (saveFunction, ct2); | |
1209 | ProcessingParams = FALSE; | |
1210 | ||
1211 | oldStyleDeclareFunction (saveFunction); | |
1212 | saveFunction = uentry_undefined; | |
1213 | } | |
1214 | } | |
1215 | ||
1216 | void | |
1217 | unsetProcessingTypedef () | |
1218 | { | |
1219 | ProcessingTypedef = FALSE; | |
1220 | } | |
1221 | ||
1222 | void checkConstant (qtype t, idDecl id) | |
1223 | { | |
1224 | uentry e; | |
1225 | ||
1226 | id = idDecl_fixBase (id, t); | |
1227 | e = uentry_makeIdConstant (id); | |
1228 | ||
1229 | reflectStorageClass (e); | |
1230 | resetStorageClass (); | |
1231 | ||
1232 | usymtab_supGlobalEntry (e); | |
1233 | } | |
1234 | ||
1235 | void checkValueConstant (qtype t, idDecl id, exprNode e) | |
1236 | { | |
1237 | uentry ue; | |
1238 | ||
1239 | id = idDecl_fixBase (id, t); | |
1240 | ue = uentry_makeIdConstant (id); | |
1241 | reflectStorageClass (ue); | |
1242 | resetStorageClass (); | |
1243 | ||
1244 | if (exprNode_isDefined (e)) | |
1245 | { | |
1246 | if (!exprNode_matchType (uentry_getType (ue), e)) | |
1247 | { | |
1248 | (void) gentypeerror | |
1249 | (exprNode_getType (e), e, | |
1250 | uentry_getType (ue), exprNode_undefined, | |
1251 | message ("Constant %q initialized to type %t, expects %t: %s", | |
1252 | uentry_getName (ue), | |
1253 | exprNode_getType (e), | |
1254 | uentry_getType (ue), | |
1255 | exprNode_unparse (e)), | |
1256 | exprNode_loc (e)); | |
1257 | } | |
1258 | else | |
1259 | { | |
1260 | if (exprNode_hasValue (e)) | |
1261 | { | |
1262 | uentry_mergeConstantValue (ue, multiVal_copy (exprNode_getValue (e))); | |
1263 | } | |
1264 | } | |
1265 | } | |
1266 | ||
1267 | usymtab_supGlobalEntry (ue); | |
1268 | } | |
1269 | ||
616915dd | 1270 | void processNamedDecl (idDecl t) |
1271 | { | |
1272 | if (qtype_isUndefined (processingType)) | |
1273 | { | |
1274 | llparseerror (message ("No type before declaration name: %q", idDecl_unparse (t))); | |
1275 | ||
1276 | processingType = qtype_create (ctype_unknown); | |
1277 | } | |
1278 | ||
1279 | t = idDecl_fixBase (t, processingType); | |
1280 | ||
1281 | DPRINTF (("Declare: %s", idDecl_unparse (t))); | |
1282 | ||
1283 | if (ProcessingGlobals) | |
1284 | { | |
1285 | cstring id = idDecl_getName (t); | |
1286 | uentry ue = usymtab_lookupSafe (id); | |
28bf4b0b | 1287 | |
616915dd | 1288 | if (!uentry_isValid (ue)) |
1289 | { | |
1290 | llerror (FLG_UNRECOG, | |
1291 | message ("Variable used in globals list is undeclared: %s", id)); | |
1292 | } | |
1293 | else | |
1294 | { | |
1295 | if (!ctype_match (uentry_getType (ue), idDecl_getCtype (t))) | |
1296 | { | |
1297 | voptgenerror | |
1298 | (FLG_INCONDEFS, | |
1299 | message ("Variable %s used in globals list declared %s, " | |
1300 | "but listed as %s", | |
1301 | id, ctype_unparse (uentry_getType (ue)), | |
1302 | ctype_unparse (idDecl_getCtype (t))), | |
1303 | g_currentloc); | |
1304 | } | |
1305 | else | |
1306 | { | |
1307 | sRef sr = sRef_copy (uentry_getSref (ue)); | |
616915dd | 1308 | reflectGlobalQualifiers (sr, idDecl_getQuals (t)); |
616915dd | 1309 | } |
1310 | } | |
1311 | } | |
1312 | else if (ProcessingVars) | |
1313 | { | |
1314 | uentry e; | |
1315 | ctype ct; | |
1316 | ||
1317 | ct = ctype_realType (idDecl_getCtype (t)); | |
1318 | ||
1319 | if (ProcessingParams) | |
1320 | { | |
1321 | cstring id = idDecl_getName (t); | |
1322 | int paramno = uentryList_lookupRealName (saveParamList, id); | |
1323 | ||
1324 | if (paramno >= 0) | |
1325 | { | |
1326 | uentry cparam = uentryList_getN (saveParamList, paramno); | |
1327 | ||
1328 | uentry_setType (cparam, idDecl_getCtype (t)); | |
1329 | uentry_reflectQualifiers (cparam, idDecl_getQuals (t)); | |
1330 | uentry_setDeclaredOnly (cparam, context_getSaveLocation ()); | |
1331 | } | |
1332 | else | |
1333 | { | |
1334 | llfatalerrorLoc | |
1335 | (message ("Old style declaration uses unlisted parameter: %s", | |
1336 | id)); | |
1337 | } | |
1338 | } | |
1339 | else | |
1340 | { | |
1341 | fileloc loc; | |
1342 | ||
1343 | if (context_inIterDef ()) | |
1344 | { | |
1345 | cstring pname = makeParam (idDecl_observeId (t)); | |
1346 | uentry p = usymtab_lookupSafe (pname); | |
1347 | ||
1348 | cstring_free (pname); | |
1349 | ||
1350 | if (uentry_isYield (p)) | |
28bf4b0b | 1351 | { |
1352 | e = uentry_makeParam (t, sRef_getParam (uentry_getSref (p))); | |
1353 | uentry_checkYieldParam (p, e); | |
1354 | usymtab_supEntrySref (e); | |
1355 | return; | |
1356 | } | |
616915dd | 1357 | } |
28bf4b0b | 1358 | |
616915dd | 1359 | if ((hasSpecialCode () || argsUsed) |
1360 | && ctype_isFunction (idDecl_getCtype (t))) | |
28bf4b0b | 1361 | { |
616915dd | 1362 | e = uentry_makeIdFunction (t); |
1363 | reflectSpecialCode (e); | |
1364 | reflectArgsUsed (e); | |
28bf4b0b | 1365 | } |
616915dd | 1366 | else |
28bf4b0b | 1367 | { |
1368 | e = uentry_makeIdVariable (t); | |
1369 | } | |
1370 | ||
616915dd | 1371 | loc = uentry_whereDeclared (e); |
28bf4b0b | 1372 | |
616915dd | 1373 | /* |
28bf4b0b | 1374 | if (context_inGlobalScope ()) |
616915dd | 1375 | { |
1376 | uentry_checkParams was here! | |
1377 | } | |
28bf4b0b | 1378 | */ |
1379 | ||
616915dd | 1380 | if (ctype_isFunction (uentry_getType (e))) |
1381 | { | |
28bf4b0b | 1382 | clabstract_prepareFunction (e); |
616915dd | 1383 | } |
1384 | ||
28bf4b0b | 1385 | DPRINTF (("Superceding... %s", uentry_unparseFull (e))); |
616915dd | 1386 | e = usymtab_supEntrySrefReturn (e); |
28bf4b0b | 1387 | DPRINTF (("After superceding... %s", uentry_unparseFull (e))); |
1388 | ||
616915dd | 1389 | if (uentry_isExtern (e) && !context_inGlobalScope ()) |
1390 | { | |
1391 | voptgenerror | |
1392 | (FLG_NESTEDEXTERN, | |
1393 | message ("Declaration using extern inside function scope: %q", | |
1394 | uentry_unparse (e)), | |
1395 | g_currentloc); | |
1396 | ||
1397 | uentry_setDefined (e, fileloc_getExternal ()); | |
1398 | sRef_setDefined (uentry_getSref (e), fileloc_getExternal ()); | |
1399 | } | |
28bf4b0b | 1400 | |
616915dd | 1401 | if (uentry_isFunction (e)) |
1402 | { | |
28bf4b0b | 1403 | if (!context_inXHFile ()) |
1404 | { | |
1405 | checkParamNames (e); | |
1406 | } | |
616915dd | 1407 | } |
28bf4b0b | 1408 | |
1409 | if (uentry_isVar (e) && uentry_isCheckedUnknown (e)) | |
616915dd | 1410 | { |
1411 | sRef sr = uentry_getSref (e); | |
28bf4b0b | 1412 | |
616915dd | 1413 | if (sRef_isLocalVar (sr)) |
1414 | { | |
1415 | if (context_getFlag (FLG_IMPCHECKMODINTERNALS)) | |
1416 | { | |
1417 | uentry_setCheckMod (e); | |
1418 | } | |
1419 | else | |
1420 | { | |
1421 | uentry_setUnchecked (e); | |
1422 | } | |
1423 | } | |
1424 | else if (sRef_isFileStatic (sr)) | |
1425 | { | |
1426 | if (context_getFlag (FLG_IMPCHECKEDSTRICTSTATICS)) | |
1427 | { | |
1428 | uentry_setCheckedStrict (e); | |
1429 | } | |
1430 | else if (context_getFlag (FLG_IMPCHECKEDSTATICS)) | |
1431 | { | |
1432 | uentry_setChecked (e); | |
1433 | } | |
1434 | else if (context_getFlag (FLG_IMPCHECKMODSTATICS)) | |
1435 | { | |
1436 | uentry_setCheckMod (e); | |
1437 | } | |
1438 | else | |
1439 | { | |
1440 | ; | |
1441 | } | |
1442 | } | |
1443 | else /* real global */ | |
1444 | { | |
1445 | llassert (sRef_isRealGlobal (sr)); | |
28bf4b0b | 1446 | |
616915dd | 1447 | if (context_getFlag (FLG_IMPCHECKEDSTRICTGLOBALS)) |
1448 | { | |
1449 | uentry_setCheckedStrict (e); | |
1450 | } | |
1451 | else if (context_getFlag (FLG_IMPCHECKEDGLOBALS)) | |
1452 | { | |
1453 | uentry_setChecked (e); | |
1454 | } | |
1455 | else if (context_getFlag (FLG_IMPCHECKMODGLOBALS)) | |
1456 | { | |
1457 | uentry_setCheckMod (e); | |
1458 | } | |
1459 | else | |
1460 | { | |
1461 | ; | |
1462 | } | |
1463 | } | |
1464 | } | |
1465 | } | |
1466 | } | |
1467 | else if (ProcessingTypedef) | |
1468 | { | |
1469 | ctype ct = idDecl_getCtype (t); | |
1470 | uentry e; | |
28bf4b0b | 1471 | |
616915dd | 1472 | DPRINTF (("Processing typedef: %s", ctype_unparse (ct))); |
1473 | ||
1474 | e = uentry_makeIdDatatype (t); | |
1475 | ||
1476 | if (cstring_equal (idDecl_getName (t), context_getBoolName ())) { | |
1477 | ctype rt = ctype_realType (ct); | |
1478 | ||
1479 | if (ctype_isEnum (rt)) { | |
1480 | ; | |
1481 | } else { | |
1482 | if (!(ctype_isInt (rt) | |
1483 | || ctype_isUnknown (rt) | |
1484 | || ctype_isChar (rt))) { | |
1485 | (void) llgenerror | |
1486 | (FLG_BOOLTYPE, | |
1487 | message ("Boolean type %s defined using non-standard type %s (integral, char or enum type expected)", | |
1488 | context_getBoolName (), | |
1489 | ctype_unparse (ct)), | |
1490 | uentry_whereLast (e)); | |
1491 | } | |
1492 | ||
1493 | ct = ctype_bool; | |
1494 | uentry_setType (e, ct); | |
1495 | } | |
1496 | } | |
1497 | ||
1498 | reflectStorageClass (e); | |
1499 | checkTypeDecl (e, ct); | |
1500 | ||
1501 | e = usymtab_supReturnTypeEntry (e); | |
616915dd | 1502 | } |
1503 | else | |
1504 | { | |
1505 | llparseerror (message ("Suspect missing struct or union keyword: %q", | |
1506 | idDecl_unparse (t))); | |
1507 | } | |
1508 | ||
1509 | } | |
1510 | ||
1511 | /* | |
1512 | ** moved from grammar | |
1513 | */ | |
1514 | ||
1515 | static idDecl fixStructDecl (/*@returned@*/ idDecl d) | |
1516 | { | |
1517 | if (ctype_isVisiblySharable (idDecl_getCtype (d)) | |
1518 | && context_getFlag (FLG_STRUCTIMPONLY)) | |
1519 | { | |
1520 | if (!qualList_hasAliasQualifier (idDecl_getQuals (d))) | |
1521 | { | |
1522 | if (qualList_hasExposureQualifier (idDecl_getQuals (d))) | |
1523 | { | |
1524 | idDecl_addQual (d, qual_createDependent ()); | |
1525 | } | |
1526 | else | |
1527 | { | |
1528 | idDecl_addQual (d, qual_createImpOnly ()); | |
1529 | } | |
1530 | } | |
1531 | } | |
1532 | ||
1533 | return d; | |
1534 | } | |
1535 | ||
1536 | ctype | |
1537 | declareUnnamedStruct (/*@only@*/ uentryList f) | |
1538 | { | |
28bf4b0b | 1539 | DPRINTF (("Unnamed struct: %s", uentryList_unparse (f))); |
1540 | ||
616915dd | 1541 | if (context_maybeSet (FLG_NUMSTRUCTFIELDS)) |
1542 | { | |
1543 | int num = uentryList_size (f); | |
1544 | int max = context_getValue (FLG_NUMSTRUCTFIELDS); | |
1545 | ||
1546 | if (num > max) | |
1547 | { | |
1548 | voptgenerror | |
1549 | (FLG_NUMSTRUCTFIELDS, | |
1550 | message ("Structure declared with %d fields " | |
1551 | "(limit is set to %d)", | |
1552 | num, max), | |
1553 | g_currentloc); | |
1554 | } | |
1555 | } | |
1556 | ||
1557 | return (ctype_createUnnamedStruct (f)); | |
1558 | } | |
1559 | ||
1560 | ctype | |
1561 | declareUnnamedUnion (/*@only@*/ uentryList f) | |
1562 | { | |
1563 | if (context_maybeSet (FLG_NUMSTRUCTFIELDS)) | |
1564 | { | |
1565 | int num = uentryList_size (f); | |
1566 | int max = context_getValue (FLG_NUMSTRUCTFIELDS); | |
1567 | ||
1568 | if (num > max) | |
1569 | { | |
1570 | voptgenerror | |
1571 | (FLG_NUMSTRUCTFIELDS, | |
1572 | message ("Union declared with %d fields " | |
1573 | "(limit is set to %d)", | |
1574 | num, max), | |
1575 | g_currentloc); | |
1576 | } | |
1577 | } | |
1578 | ||
1579 | return (ctype_createUnnamedUnion (f)); | |
1580 | } | |
1581 | ||
1582 | ctype declareStruct (cstring id, /*@only@*/ uentryList f) | |
1583 | { | |
1584 | ctype ct; | |
1585 | uentry ue; | |
1586 | int num = uentryList_size (f); | |
1587 | ||
28bf4b0b | 1588 | DPRINTF (("Declare struct: %s / %s", id, uentryList_unparse (f))); |
1589 | ||
616915dd | 1590 | ct = ctype_createStruct (cstring_copy (id), f); |
28bf4b0b | 1591 | |
1592 | DPRINTF (("Ctype: %s", ctype_unparse (ct))); | |
1593 | ||
616915dd | 1594 | ue = uentry_makeStructTagLoc (id, ct); |
1595 | ||
28bf4b0b | 1596 | DPRINTF (("ue: %s", uentry_unparseFull (ue))); |
1597 | ||
616915dd | 1598 | if (context_maybeSet (FLG_NUMSTRUCTFIELDS)) |
1599 | { | |
1600 | int max = context_getValue (FLG_NUMSTRUCTFIELDS); | |
1601 | ||
1602 | if (num > max) | |
1603 | { | |
1604 | voptgenerror | |
1605 | (FLG_NUMSTRUCTFIELDS, | |
1606 | message ("Structure %q declared with %d fields " | |
1607 | "(limit is set to %d)", | |
1608 | uentry_getName (ue), num, max), | |
1609 | uentry_whereLast (ue)); | |
1610 | } | |
1611 | } | |
1612 | ||
1613 | return (usymtab_supTypeEntry (ue)); | |
1614 | } | |
1615 | ||
1616 | ctype declareUnion (cstring id, uentryList f) | |
1617 | { | |
1618 | ctype ct; | |
1619 | uentry ue; | |
1620 | int num = uentryList_size (f); | |
1621 | ||
1622 | ct = ctype_createUnion (cstring_copy (id), f); | |
1623 | ue = uentry_makeUnionTagLoc (id, ct); | |
1624 | ||
1625 | if (context_maybeSet (FLG_NUMSTRUCTFIELDS)) | |
1626 | { | |
1627 | int max = context_getValue (FLG_NUMSTRUCTFIELDS); | |
1628 | ||
1629 | if (num > max) | |
1630 | { | |
1631 | voptgenerror | |
1632 | (FLG_NUMSTRUCTFIELDS, | |
1633 | message ("Union %q declared with %d fields " | |
1634 | "(limit is set to %d)", | |
1635 | uentry_getName (ue), num, max), | |
1636 | uentry_whereLast (ue)); | |
1637 | } | |
1638 | } | |
1639 | ||
1640 | return (usymtab_supTypeEntry (ue)); | |
1641 | } | |
1642 | ||
1643 | ctype handleStruct (/*@only@*/ cstring id) | |
1644 | { | |
1645 | if (usymtab_existsStructTag (id)) | |
1646 | { | |
1647 | ctype ct = uentry_getAbstractType (usymtab_lookupStructTag (id)); | |
1648 | ||
1649 | cstring_free (id); | |
1650 | return ct; | |
1651 | } | |
1652 | else | |
1653 | { | |
1654 | return (ctype_createForwardStruct (id)); | |
1655 | } | |
1656 | } | |
1657 | ||
1658 | ctype handleUnion (/*@only@*/ cstring id) | |
1659 | { | |
1660 | if (usymtab_existsUnionTag (id)) | |
1661 | { | |
1662 | ctype ret = uentry_getAbstractType (usymtab_lookupUnionTag (id)); | |
1663 | cstring_free (id); | |
1664 | return (ret); | |
1665 | } | |
1666 | else | |
1667 | { | |
1668 | return (ctype_createForwardUnion (id)); | |
1669 | } | |
1670 | } | |
1671 | ||
1672 | ctype | |
1673 | handleEnum (cstring id) | |
1674 | { | |
1675 | if (usymtab_existsEnumTag (id)) | |
1676 | { | |
1677 | ctype ret = uentry_getAbstractType (usymtab_lookupEnumTag (id)); | |
1678 | cstring_free (id); | |
1679 | return ret; | |
1680 | } | |
1681 | else | |
1682 | { | |
1683 | return (declareEnum (id, enumNameList_new ())); | |
1684 | } | |
1685 | } | |
1686 | ||
1687 | bool processingIterVars (void) | |
1688 | { | |
1689 | return ProcessingIterVars; | |
1690 | } | |
1691 | ||
1692 | uentry getCurrentIter (void) | |
1693 | { | |
1694 | return currentIter; | |
1695 | } | |
1696 | ||
1697 | static bool flipOldStyle = FALSE; | |
1698 | static bool flipNewStyle = TRUE; | |
1699 | ||
1700 | void setFlipOldStyle () { flipOldStyle = TRUE; } | |
1701 | bool isFlipOldStyle () { return flipOldStyle; } | |
1702 | bool isNewStyle () { return flipNewStyle; } | |
1703 | void setNewStyle () { flipNewStyle = TRUE; } | |
1704 | ||
1705 | /*@dependent@*/ uentryList handleParamIdList (/*@dependent@*/ uentryList params) | |
1706 | { | |
1707 | int paramno = 0; | |
1708 | ||
1709 | /* | |
1710 | ** this is a really YUCKY hack to handle old style | |
1711 | ** declarations. | |
1712 | */ | |
1713 | ||
1714 | voptgenerror (FLG_OLDSTYLE, | |
1715 | cstring_makeLiteral ("Old style function declaration"), | |
1716 | g_currentloc); | |
1717 | ||
1718 | uentryList_elements (params, current) | |
1719 | { | |
1720 | uentry_setParam (current); | |
1721 | uentry_setSref (current, sRef_makeParam (paramno, ctype_unknown)); | |
1722 | paramno++; | |
1723 | } end_uentryList_elements; | |
1724 | ||
1725 | setGenericParamList (params); | |
1726 | g_expectingTypeName = TRUE; | |
1727 | ||
1728 | return params; | |
1729 | } | |
1730 | ||
1731 | /*@dependent@*/ uentryList handleParamTypeList (/*@returned@*/ uentryList params) | |
1732 | { | |
1733 | if (flipOldStyle) | |
1734 | { | |
1735 | uentryList_fixMissingNames (params); | |
1736 | ||
1737 | voptgenerror (FLG_OLDSTYLE, | |
1738 | cstring_makeLiteral ("Old style function declaration."), | |
1739 | g_currentloc); | |
1740 | ||
1741 | setGenericParamList (params); | |
1742 | flipOldStyle = FALSE; | |
1743 | g_expectingTypeName = TRUE; | |
1744 | } | |
1745 | ||
1746 | return (params); | |
1747 | } | |
1748 | ||
1749 | void | |
1750 | doVaDcl () | |
1751 | { | |
1752 | ctype c = ctype_unknown; | |
1753 | cstring id = cstring_makeLiteral ("va_alist"); | |
1754 | uentry e; | |
1755 | ||
1756 | if (ProcessingParams) | |
1757 | { | |
1758 | int i = uentryList_lookupRealName (saveParamList, id); | |
1759 | ||
1760 | if (i >= 0) | |
1761 | { | |
1762 | e = uentry_makeVariableSrefParam (id, c, sRef_makeParam (i, c)); | |
1763 | } | |
1764 | else | |
1765 | { | |
1766 | e = uentry_undefined; /* suppress gcc message */ | |
1767 | llfatalerrorLoc (cstring_makeLiteral ("va_dcl used without va_alist")); | |
1768 | } | |
1769 | } | |
1770 | else | |
1771 | { | |
1772 | llerror (FLG_SYNTAX, cstring_makeLiteral ("va_dcl used outside of function declaration")); | |
1773 | e = uentry_makeVariableLoc (id, c); | |
1774 | } | |
1775 | ||
1776 | cstring_free (id); | |
1777 | uentry_setUsed (e, g_currentloc); | |
1778 | usymtab_supEntrySref (e); | |
1779 | } | |
1780 | ||
28bf4b0b | 1781 | /*@exposed@*/ sRef modListPointer (/*@exposed@*/ sRef s) |
616915dd | 1782 | { |
1783 | ctype ct = sRef_getType (s); | |
1784 | ctype rt = ctype_realType (ct); | |
1785 | ||
1786 | if (ctype_isAP (rt)) | |
1787 | { | |
1788 | if (context_inHeader () && ctype_isAbstract (ct)) | |
1789 | { | |
1790 | voptgenerror | |
1791 | (FLG_ABSTRACT, | |
1792 | message | |
1793 | ("Modifies clause in header file dereferences abstract " | |
1794 | "type %s (interface modifies clause should not depend " | |
1795 | "on or expose type representation): %q", | |
1796 | ctype_unparse (ct), | |
1797 | sRef_unparse (s)), | |
1798 | g_currentloc); | |
1799 | } | |
1800 | ||
1801 | return (sRef_constructPointer (s)); | |
1802 | } | |
1803 | else | |
1804 | { | |
1805 | if (ctype_isKnown (rt)) | |
1806 | { | |
1807 | voptgenerror | |
1808 | (FLG_TYPE, | |
1809 | message ("Implementation modifies clause dereferences non-pointer (type %s): %q", | |
1810 | ctype_unparse (rt), | |
1811 | sRef_unparse (s)), | |
1812 | g_currentloc); | |
1813 | } | |
1814 | ||
1815 | return s; | |
1816 | } | |
1817 | } | |
1818 | ||
1819 | /*@exposed@*/ sRef modListFieldAccess (sRef s, cstring f) | |
1820 | { | |
1821 | ctype ct = sRef_getType (s); | |
1822 | ctype rt = ctype_realType (ct); | |
1823 | ||
1824 | if (ctype_isStructorUnion (rt)) | |
1825 | { | |
1826 | uentry tf = uentryList_lookupField (ctype_getFields (rt), f); | |
1827 | ||
1828 | if (uentry_isUndefined (tf)) | |
1829 | { | |
1830 | voptgenerror (FLG_TYPE, | |
1831 | message ("Modifies list accesses non-existent " | |
1832 | "field %s of %t: %q", f, ct, | |
1833 | sRef_unparse (s)), | |
1834 | g_currentloc); | |
1835 | ||
1836 | cstring_free (f); | |
1837 | return sRef_undefined; | |
1838 | } | |
1839 | else | |
1840 | { | |
1841 | if (ctype_isAbstract (ct) && context_inHeader ()) | |
1842 | { | |
1843 | voptgenerror | |
1844 | (FLG_ABSTRACT, | |
1845 | message | |
1846 | ("Modifies clause in header file accesses abstract " | |
1847 | "type %s (interface modifies clause should not depend " | |
1848 | "on or expose type representation): %q", | |
1849 | ctype_unparse (ct), | |
1850 | sRef_unparse (s)), | |
1851 | g_currentloc); | |
1852 | } | |
1853 | } | |
1854 | ||
1855 | cstring_markOwned (f); | |
1856 | return (sRef_makeField (s, f)); | |
1857 | } | |
1858 | else | |
1859 | { | |
1860 | voptgenerror | |
1861 | (FLG_TYPE, | |
1862 | message ("Modifies clause dereferences non-pointer (type %s): %q", | |
1863 | ctype_unparse (rt), | |
1864 | sRef_unparse (s)), | |
1865 | g_currentloc); | |
1866 | ||
1867 | cstring_free (f); | |
1868 | return s; | |
1869 | } | |
1870 | } | |
1871 | ||
28bf4b0b | 1872 | /*@dependent@*/ sRef clabstract_unrecognizedGlobal (cstring s) |
616915dd | 1873 | { |
1874 | if (cstring_equalLit (s, "nothing")) | |
1875 | { | |
1876 | return sRef_makeNothing (); | |
1877 | } | |
1878 | else if (cstring_equalLit (s, "internalState")) | |
1879 | { | |
1880 | return sRef_makeInternalState (); | |
1881 | } | |
1882 | else if (cstring_equalLit (s, "fileSystem") | |
1883 | || cstring_equalLit (s, "systemState")) | |
1884 | { | |
1885 | return sRef_makeSystemState (); | |
1886 | } | |
1887 | else | |
1888 | { | |
1889 | voptgenerror | |
1890 | (FLG_UNRECOG, | |
1891 | message ("Unrecognized identifier in globals list: %s", s), | |
1892 | g_currentloc); | |
1893 | ||
1894 | return sRef_undefined; | |
1895 | } | |
1896 | } | |
1897 | ||
1898 | /*@exposed@*/ sRef modListArrowAccess (sRef s, cstring f) | |
1899 | { | |
1900 | ctype ct = sRef_getType (s); | |
1901 | ctype rt = ctype_realType (ct); | |
1902 | ||
1903 | if (ctype_isRealPointer (rt)) | |
1904 | { | |
1905 | ctype b = ctype_baseArrayPtr (rt); | |
1906 | ctype rb = ctype_realType (b); | |
1907 | ||
1908 | if (ctype_isStructorUnion (rb)) | |
1909 | { | |
1910 | uentry tf = uentryList_lookupField (ctype_getFields (rb), f); | |
1911 | ||
1912 | if (uentry_isUndefined (tf)) | |
1913 | { | |
1914 | voptgenerror (FLG_TYPE, | |
1915 | message ("Modifies list arrow accesses non-existent " | |
1916 | "field %s of %t: %q", f, b, | |
1917 | sRef_unparse (s)), | |
1918 | g_currentloc); | |
1919 | ||
1920 | cstring_free (f); | |
1921 | return sRef_undefined; | |
1922 | } | |
1923 | else | |
1924 | { | |
1925 | if (context_inHeader ()) | |
1926 | { | |
1927 | if (ctype_isAbstract (b)) | |
1928 | { | |
1929 | voptgenerror | |
1930 | (FLG_ABSTRACT, | |
1931 | message | |
1932 | ("Modifies clause in header file arrow accesses abstract " | |
1933 | "type %s (interface modifies clause should not depend " | |
1934 | "on or expose type representation): %q", | |
1935 | ctype_unparse (b), | |
1936 | sRef_unparse (s)), | |
1937 | g_currentloc); | |
1938 | } | |
1939 | } | |
1940 | else | |
1941 | { | |
1942 | if (ctype_isAbstract (ct)) | |
1943 | { | |
1944 | voptgenerror | |
1945 | (FLG_ABSTRACT, | |
1946 | message | |
1947 | ("Modifies clause in header file arrow accesses abstract " | |
1948 | "type %s (interface modifies clause should not depend " | |
1949 | "on or expose type representation): %q", | |
1950 | ctype_unparse (ct), | |
1951 | sRef_unparse (s)), | |
1952 | g_currentloc); | |
1953 | } | |
1954 | } | |
1955 | } | |
1956 | ||
1957 | cstring_markOwned (f); | |
1958 | return (sRef_makeArrow (s, f)); | |
1959 | } | |
1960 | else | |
1961 | { | |
1962 | voptgenerror | |
1963 | (FLG_TYPE, | |
1964 | message ("Modifies clause arrow accesses pointer to " | |
1965 | "non-structure (type %s): %q", | |
1966 | ctype_unparse (rt), | |
1967 | sRef_unparse (s)), | |
1968 | g_currentloc); | |
1969 | } | |
1970 | } | |
1971 | else | |
1972 | { | |
1973 | voptgenerror | |
1974 | (FLG_TYPE, | |
1975 | message ("Modifies clause arrow accesses non-pointer (type %s): %q", | |
1976 | ctype_unparse (rt), | |
1977 | sRef_unparse (s)), | |
1978 | g_currentloc); | |
1979 | } | |
1980 | ||
1981 | cstring_free (f); | |
1982 | return s; | |
1983 | } | |
1984 | ||
28bf4b0b | 1985 | sRef checkStateClausesId (uentry ue) |
616915dd | 1986 | { |
1987 | cstring s = uentry_rawName (ue); | |
1988 | ||
28bf4b0b | 1989 | if (sRef_isFileOrGlobalScope (uentry_getSref (ue))) |
616915dd | 1990 | { |
1991 | voptgenerror | |
28bf4b0b | 1992 | (FLG_COMMENTERROR, |
616915dd | 1993 | message ("Global variable %s used special clause. (Global variables " |
1994 | "are not recognized in special clauses. If there is " | |
1995 | "sufficient interest in support for this, it may be " | |
1996 | "added to a future release. Send mail to " | |
1997 | "lclint@cs.virginia.edu.)", | |
1998 | s), | |
1999 | g_currentloc); | |
2000 | ||
2001 | return sRef_undefined; | |
2002 | } | |
2003 | else | |
2004 | { | |
2005 | if (cstring_equalLit (s, "result")) | |
2006 | { | |
2007 | if (optgenerror | |
2008 | (FLG_SYNTAX, | |
2009 | message ("Special clause list uses %s which is a variable and has special " | |
2010 | "meaning in a modifies list. (Special meaning assumed.)", s), | |
2011 | g_currentloc)) | |
2012 | { | |
2013 | uentry_showWhereDeclared (ue); | |
2014 | } | |
2015 | } | |
2016 | ||
2017 | return uentry_getSref (ue); | |
2018 | } | |
2019 | } | |
9280addf | 2020 | /*drl:1/19/2001 |
2021 | oops to 1/8/2000 | |
2022 | date is wronge .. | |
2023 | don;t know what the real date is... | |
2024 | ||
2025 | */ | |
616915dd | 2026 | |
2027 | /*drl | |
2028 | added 1/8/2000 | |
2029 | based on checkSpecClausesId | |
2030 | called by grammar | |
2031 | */ | |
b37cf05e | 2032 | |
616915dd | 2033 | sRef checkbufferConstraintClausesId (uentry ue) |
2034 | { | |
2035 | cstring s = uentry_rawName (ue); | |
08eb3d0e | 2036 | |
616915dd | 2037 | if (cstring_equalLit (s, "result")) |
2038 | { | |
2039 | if (optgenerror | |
2040 | (FLG_SYNTAX, | |
08eb3d0e | 2041 | message ("Function clause list uses %s which is a variable and has special " |
616915dd | 2042 | "meaning in a modifies list. (Special meaning assumed.)", s), |
2043 | g_currentloc)) | |
2044 | { | |
2045 | uentry_showWhereDeclared (ue); | |
2046 | } | |
2047 | } | |
2048 | ||
08eb3d0e | 2049 | return sRef_saveCopy (uentry_getSref (ue)); /*@i523 why the saveCopy? */ |
616915dd | 2050 | } |
2051 | ||
2052 | void checkModifiesId (uentry ue) | |
2053 | { | |
2054 | cstring s = uentry_rawName (ue); | |
2055 | ||
2056 | if (cstring_equalLit (s, "nothing") | |
2057 | || cstring_equalLit (s, "internalState") | |
2058 | || cstring_equalLit (s, "systemState") | |
2059 | || (cstring_equalLit (s, "fileSystem"))) | |
2060 | { | |
2061 | if (optgenerror | |
2062 | (FLG_SYNTAX, | |
2063 | message ("Modifies list uses %s which is a variable and has special " | |
2064 | "meaning in a modifies list. (Special meaning assumed.)", s), | |
2065 | g_currentloc)) | |
2066 | { | |
2067 | uentry_showWhereDeclared (ue); | |
2068 | } | |
2069 | } | |
2070 | } | |
2071 | ||
2072 | /*@exposed@*/ sRef fixModifiesId (cstring s) | |
2073 | { | |
2074 | sRef ret; | |
2075 | cstring pname = makeParam (s); | |
2076 | uentry ue = usymtab_lookupSafe (pname); | |
2077 | ||
2078 | cstring_free (pname); | |
2079 | ||
2080 | if (cstring_equalLit (s, "nothing")) | |
2081 | { | |
2082 | ret = sRef_makeNothing (); | |
2083 | } | |
2084 | else if (cstring_equalLit (s, "internalState")) | |
2085 | { | |
2086 | ret = sRef_makeInternalState (); | |
2087 | } | |
2088 | else if (cstring_equalLit (s, "fileSystem") | |
2089 | || cstring_equalLit (s, "systemState")) | |
2090 | { | |
2091 | ret = sRef_makeSystemState (); | |
2092 | } | |
2093 | else | |
2094 | { | |
2095 | ret = sRef_undefined; | |
2096 | } | |
2097 | ||
2098 | if (sRef_isValid (ret)) | |
2099 | { | |
2100 | if (uentry_isValid (ue)) | |
2101 | { | |
2102 | voptgenerror | |
2103 | (FLG_SYNTAX, | |
2104 | message ("Modifies list uses %s which is a parameter and has special " | |
2105 | "meaning in a modifies list. (Special meaning assumed.)", s), | |
2106 | g_currentloc); | |
2107 | } | |
2108 | } | |
2109 | else | |
2110 | { | |
2111 | if (uentry_isValid (ue)) | |
2112 | { | |
2113 | ret = uentry_getSref (ue); | |
2114 | } | |
2115 | else | |
2116 | { | |
2117 | fileloc loc = fileloc_decColumn (g_currentloc, cstring_length (s)); | |
2118 | ret = sRef_undefined; | |
2119 | ||
2120 | voptgenerror | |
2121 | (FLG_UNRECOG, | |
2122 | message ("Unrecognized identifier in modifies comment: %s", s), | |
2123 | loc); | |
2124 | ||
2125 | fileloc_free (loc); | |
2126 | } | |
2127 | } | |
2128 | ||
2129 | return ret; | |
2130 | } | |
2131 | ||
28bf4b0b | 2132 | sRef fixStateClausesId (cstring s) |
616915dd | 2133 | { |
2134 | sRef ret; | |
2135 | cstring pname = makeParam (s); | |
2136 | uentry ue = usymtab_lookupSafe (pname); | |
2137 | ||
2138 | cstring_free (pname); | |
2139 | ||
2140 | if (cstring_equalLit (s, "result")) | |
2141 | { | |
b072092f | 2142 | ret = sRef_makeResult (ctype_unknown); |
616915dd | 2143 | } |
2144 | else | |
2145 | { | |
2146 | ret = sRef_undefined; | |
2147 | } | |
2148 | ||
2149 | if (sRef_isValid (ret)) | |
2150 | { | |
2151 | if (uentry_isValid (ue)) | |
2152 | { | |
2153 | voptgenerror | |
2154 | (FLG_SYNTAX, | |
d9a28762 | 2155 | message ("Function clause uses %s which is a parameter and has special " |
2156 | "meaning in a function clause. (Special meaning assumed.)", s), | |
616915dd | 2157 | g_currentloc); |
2158 | } | |
2159 | } | |
2160 | else | |
2161 | { | |
2162 | if (uentry_isValid (ue)) | |
2163 | { | |
2164 | ret = uentry_getSref (ue); | |
2165 | ||
28bf4b0b | 2166 | if (sRef_isFileOrGlobalScope (ret)) |
616915dd | 2167 | { |
2168 | voptgenerror | |
2169 | (FLG_SYNTAX, | |
d9a28762 | 2170 | message ("Global variable %s used in function clause. (Global variables " |
2171 | "are not recognized in function clauses. If there is " | |
616915dd | 2172 | "sufficient interest in support for this, it may be " |
2173 | "added to a future release. Send mail to " | |
2174 | "lclint@cs.virginia.edu.)", | |
2175 | s), | |
2176 | g_currentloc); | |
2177 | ||
2178 | ret = sRef_undefined; | |
2179 | } | |
2180 | } | |
2181 | else | |
2182 | { | |
2183 | fileloc loc = fileloc_decColumn (g_currentloc, cstring_length (s)); | |
2184 | ret = sRef_undefined; | |
2185 | ||
2186 | voptgenerror | |
2187 | (FLG_UNRECOG, | |
d9a28762 | 2188 | message ("Unrecognized identifier in function clause: %s", s), |
616915dd | 2189 | loc); |
2190 | ||
2191 | fileloc_free (loc); | |
2192 | } | |
2193 | } | |
2194 | ||
2195 | return ret; | |
2196 | } | |
2197 | ||
28bf4b0b | 2198 | sRef modListArrayFetch (/*@exposed@*/ sRef s, /*@unused@*/ sRef mexp) |
616915dd | 2199 | { |
2200 | ctype ct = sRef_getType (s); | |
2201 | ctype rt = ctype_realType (ct); | |
2202 | ||
2203 | if (ctype_isAP (rt)) | |
2204 | { | |
2205 | if (context_inHeader () && ctype_isAbstract (ct)) | |
2206 | { | |
2207 | voptgenerror | |
2208 | (FLG_ABSTRACT, | |
2209 | message | |
2210 | ("Modifies clause in header file indexes abstract " | |
2211 | "type %s (interface modifies clause should not depend " | |
2212 | "on or expose type representation): %q", | |
2213 | ctype_unparse (ct), | |
2214 | sRef_unparse (s)), | |
2215 | g_currentloc); | |
2216 | } | |
2217 | ||
2218 | return (sRef_makeAnyArrayFetch (s)); | |
2219 | } | |
2220 | else | |
2221 | { | |
2222 | voptgenerror | |
2223 | (FLG_TYPE, | |
2224 | message | |
2225 | ("Implementation modifies clause uses array fetch on non-array (type %s): %q", | |
2226 | ctype_unparse (ct), sRef_unparse (s)), | |
2227 | g_currentloc); | |
2228 | return s; | |
2229 | } | |
2230 | } | |
2231 | ||
28bf4b0b | 2232 | static void clabstract_prepareFunction (uentry e) |
2233 | { | |
2234 | uentry_checkParams (e); | |
2235 | DPRINTF (("After prepare: %s", uentry_unparseFull (e))); | |
2236 | } | |
2237 | ||
2238 | sRef clabstract_checkGlobal (exprNode e) | |
2239 | { | |
2240 | sRef s; | |
2241 | llassert (exprNode_isInitializer (e)); | |
2242 | ||
2243 | s = exprNode_getSref (e); | |
2244 | DPRINTF (("Initializer: %s -> %s", exprNode_unparse (e), sRef_unparse (s))); | |
2245 | ||
2246 | exprNode_free (e); | |
2247 | return sRef_copy (s); | |
2248 | } | |
2249 | ||
616915dd | 2250 | |
2251 | ||
2252 | ||
2253 | ||
2254 | ||
2255 | ||
2256 |