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616915dd | 1 | /* |
11db3170 | 2 | ** Splint - annotation-assisted static program checker |
77d37419 | 3 | ** Copyright (C) 1994-2002 University of Virginia, |
616915dd | 4 | ** Massachusetts Institute of Technology |
5 | ** | |
6 | ** This program is free software; you can redistribute it and/or modify it | |
7 | ** under the terms of the GNU General Public License as published by the | |
8 | ** Free Software Foundation; either version 2 of the License, or (at your | |
9 | ** option) any later version. | |
10 | ** | |
11 | ** This program is distributed in the hope that it will be useful, but | |
12 | ** WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | ** General Public License for more details. | |
15 | ** | |
16 | ** The GNU General Public License is available from http://www.gnu.org/ or | |
17 | ** the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, | |
18 | ** MA 02111-1307, USA. | |
19 | ** | |
155af98d | 20 | ** For information on splint: info@splint.org |
21 | ** To report a bug: splint-bug@splint.org | |
11db3170 | 22 | ** For more information: http://www.splint.org |
616915dd | 23 | */ |
24 | /* | |
25 | ** clabstract.c | |
26 | ** | |
27 | ** ASTs for C grammar | |
28 | ** | |
29 | */ | |
30 | ||
1b8ae690 | 31 | # include "splintMacros.nf" |
616915dd | 32 | # include "llbasic.h" |
33 | # include "cgrammar.h" | |
616915dd | 34 | # include "usymtab_interface.h" |
616915dd | 35 | |
36 | # include "structNames.h" | |
37 | # include "nameChecks.h" | |
38 | ||
39 | # ifdef SANITIZER | |
40 | # include "sgrammar_tokens.h" | |
41 | # else | |
42 | # include "cgrammar_tokens.h" | |
43 | # endif | |
44 | ||
45 | /* | |
46 | ** Lots of variables are needed because of interactions with the | |
47 | ** parser. This is easier than restructuring the grammar so the | |
48 | ** right values are available in the right place. | |
49 | */ | |
50 | ||
b7b694d6 | 51 | /*drl*/ |
52 | static /*@only@*/ constraintList implicitFcnConstraints = NULL; | |
616915dd | 53 | |
28bf4b0b | 54 | static void clabstract_prepareFunction (uentry p_e) /*@modifies p_e@*/ ; |
616915dd | 55 | static bool fcnNoGlobals = FALSE; |
01a8227e | 56 | static void processVariable (/*@temp@*/ idDecl p_t) /*@modifies internalState@*/ ; |
57 | ||
58 | static bool s_processingVars = FALSE; | |
59 | static bool s_processingParams = FALSE; | |
60 | static bool s_processingGlobals = FALSE; | |
61 | static bool s_processingTypedef = FALSE; | |
62 | static bool s_processingIterVars = FALSE; | |
616915dd | 63 | static /*@only@*/ qtype processingType = qtype_undefined; |
64 | static uentry currentIter = uentry_undefined; | |
616915dd | 65 | static /*@dependent@*/ uentryList saveParamList; /* for old style functions */ |
66 | static /*@owned@*/ uentry saveFunction = uentry_undefined; | |
67 | static int saveIterParamNo; | |
68 | static idDecl fixStructDecl (/*@returned@*/ idDecl p_d); | |
69 | static void checkTypeDecl (uentry p_e, ctype p_rep); | |
70 | static /*@dependent@*/ fileloc saveStoreLoc = fileloc_undefined; | |
71 | static storageClassCode storageClass = SCNONE; | |
72 | static void declareEnumList (/*@temp@*/ enumNameList p_el, ctype p_c, fileloc p_loc); | |
73 | static void resetGlobals (void); | |
28bf4b0b | 74 | static /*@null@*/ qual specialFunctionCode; |
616915dd | 75 | static bool argsUsed = FALSE; |
76 | ||
28bf4b0b | 77 | extern void clabstract_initMod () |
78 | { | |
79 | specialFunctionCode = qual_createUnknown (); | |
80 | DPRINTF (("Initialized: %s", qual_unparse (specialFunctionCode))); | |
81 | } | |
82 | ||
616915dd | 83 | static bool hasSpecialCode (void) |
84 | { | |
28bf4b0b | 85 | return (!qual_isUnknown (specialFunctionCode)); |
616915dd | 86 | } |
87 | ||
88 | extern void setArgsUsed (void) | |
89 | { | |
90 | if (argsUsed) | |
91 | { | |
92 | voptgenerror | |
93 | (FLG_SYNTAX, | |
94 | cstring_makeLiteral ("Multiple ARGSUSED comments for one function"), | |
95 | g_currentloc); | |
96 | } | |
97 | ||
98 | argsUsed = TRUE; | |
99 | } | |
100 | ||
101 | static void reflectArgsUsed (uentry ue) | |
102 | { | |
103 | if (argsUsed) | |
104 | { | |
105 | if (uentry_isFunction (ue)) | |
106 | { | |
107 | uentryList params = uentry_getParams (ue); | |
108 | ||
109 | uentryList_elements (params, el) | |
110 | { | |
111 | uentry_setUsed (el, fileloc_undefined); | |
112 | } end_uentryList_elements ; | |
113 | } | |
114 | ||
115 | argsUsed = FALSE; | |
116 | } | |
117 | } | |
118 | ||
119 | extern void setSpecialFunction (qual qu) | |
120 | { | |
28bf4b0b | 121 | if (!qual_isUnknown (specialFunctionCode)) |
616915dd | 122 | { |
123 | voptgenerror (FLG_SYNTAX, | |
124 | message ("Multiple special function codes: %s, %s " | |
125 | "(first code is ignored)", | |
126 | qual_unparse (specialFunctionCode), | |
127 | qual_unparse (qu)), | |
128 | g_currentloc); | |
129 | } | |
130 | ||
131 | specialFunctionCode = qu; | |
132 | } | |
133 | ||
134 | static void reflectSpecialCode (uentry ue) | |
135 | { | |
28bf4b0b | 136 | if (qual_isUnknown (specialFunctionCode)) { |
137 | ; | |
138 | } else if (qual_isPrintfLike (specialFunctionCode)) { | |
139 | uentry_setPrintfLike (ue); | |
140 | } else if (qual_isScanfLike (specialFunctionCode)) { | |
141 | uentry_setScanfLike (ue); | |
142 | } else if (qual_isMessageLike (specialFunctionCode)) { | |
143 | uentry_setMessageLike (ue); | |
144 | } else { | |
145 | BADBRANCH; | |
146 | } | |
616915dd | 147 | |
28bf4b0b | 148 | specialFunctionCode = qual_createUnknown (); |
616915dd | 149 | } |
150 | ||
151 | static void resetStorageClass (void) | |
152 | { | |
153 | qtype_free (processingType); | |
154 | processingType = qtype_undefined; | |
155 | storageClass = SCNONE; | |
156 | } | |
157 | ||
616915dd | 158 | static void reflectStorageClass (uentry u) |
159 | { | |
160 | if (storageClass == SCSTATIC) | |
161 | { | |
162 | uentry_setStatic (u); | |
163 | } | |
164 | else if (storageClass == SCEXTERN) | |
165 | { | |
166 | uentry_setExtern (u); | |
167 | } | |
168 | else | |
169 | { | |
170 | ; /* no storage class */ | |
171 | } | |
172 | ||
173 | } | |
174 | ||
175 | void storeLoc () | |
176 | { | |
177 | saveStoreLoc = g_currentloc; | |
178 | } | |
179 | ||
180 | void setFunctionNoGlobals (void) | |
181 | { | |
616915dd | 182 | fcnNoGlobals = TRUE; |
183 | } | |
184 | ||
616915dd | 185 | static void reflectGlobalQualifiers (sRef sr, qualList quals) |
186 | { | |
28bf4b0b | 187 | DPRINTF (("Reflect global qualifiers: %s / %s", |
188 | sRef_unparseFull (sr), qualList_unparse (quals))); | |
189 | ||
616915dd | 190 | qualList_elements (quals, qel) |
191 | { | |
192 | if (qual_isGlobalQual (qel)) /* undef, killed */ | |
193 | { | |
194 | sstate oldstate = sRef_getDefState (sr); | |
195 | sstate defstate = sstate_fromQual (qel); | |
196 | ||
197 | if ((oldstate == SS_UNDEFGLOB && defstate == SS_KILLED) | |
198 | || (oldstate == SS_KILLED && defstate == SS_UNDEFGLOB)) | |
199 | { | |
200 | defstate = SS_UNDEFKILLED; | |
201 | } | |
202 | else | |
203 | { | |
204 | ; /* any errors? */ | |
205 | } | |
206 | ||
207 | sRef_setDefState (sr, defstate, fileloc_undefined); | |
28bf4b0b | 208 | DPRINTF (("State: %s", sRef_unparseFull (sr))); |
616915dd | 209 | } |
210 | else if (qual_isAllocQual (qel)) /* out, partial, reldef, etc. */ | |
211 | { | |
212 | ctype realType = sRef_getType (sr); | |
213 | sstate defstate = sstate_fromQual (qel); | |
214 | ||
215 | if (qual_isRelDef (qel)) | |
216 | { | |
217 | ; /* okay anywhere */ | |
218 | } | |
219 | else | |
220 | { | |
221 | if (!ctype_isAP (realType) | |
222 | && !ctype_isSU (realType) | |
223 | && !ctype_isUnknown (realType) | |
224 | && !ctype_isAbstract (sRef_getType (sr))) | |
225 | { | |
226 | llerror | |
227 | (FLG_SYNTAX, | |
228 | message ("Qualifier %s used on non-pointer or struct: %q", | |
229 | qual_unparse (qel), sRef_unparse (sr))); | |
230 | ||
231 | } | |
232 | } | |
233 | ||
234 | sRef_setDefState (sr, defstate, fileloc_undefined); | |
235 | } | |
236 | else if (qual_isNull (qel)) | |
237 | { | |
238 | sRef_setNullState (sr, NS_POSNULL, fileloc_undefined); | |
239 | } | |
240 | else if (qual_isRelNull (qel)) | |
241 | { | |
242 | sRef_setNullState (sr, NS_RELNULL, fileloc_undefined); | |
243 | } | |
244 | else if (qual_isNotNull (qel)) | |
245 | { | |
246 | sRef_setNullState (sr, NS_MNOTNULL, fileloc_undefined); | |
247 | } | |
248 | else | |
249 | { | |
250 | if (qual_isCQual (qel)) | |
251 | { | |
252 | ; /* okay */ | |
253 | } | |
254 | else | |
255 | { | |
256 | llerror (FLG_SYNTAX, | |
257 | message ("Qualifier %s cannot be used in a globals list", | |
258 | qual_unparse (qel))); | |
259 | } | |
260 | } | |
261 | } end_qualList_elements; | |
262 | } | |
263 | ||
28bf4b0b | 264 | sRef clabstract_createGlobal (sRef sr, qualList quals) |
616915dd | 265 | { |
28bf4b0b | 266 | sRef res; |
267 | ||
616915dd | 268 | if (sRef_isValid (sr)) |
269 | { | |
28bf4b0b | 270 | res = sRef_copy (sr); |
271 | DPRINTF (("Reflecting quals: %s / %s", sRef_unparse (sr), qualList_unparse (quals))); | |
272 | reflectGlobalQualifiers (res, quals); | |
273 | DPRINTF (("==> %s", sRef_unparseFull (res))); | |
616915dd | 274 | } |
28bf4b0b | 275 | else |
276 | { | |
277 | res = sRef_undefined; | |
278 | } | |
279 | ||
280 | qualList_free (quals); | |
281 | return res; | |
616915dd | 282 | } |
283 | ||
284 | extern void declareCIter (cstring name, /*@owned@*/ uentryList params) | |
285 | { | |
286 | uentry ue; | |
287 | ||
288 | ue = uentry_makeIter (name, | |
289 | ctype_makeFunction (ctype_void, params), | |
290 | fileloc_copy (g_currentloc)); | |
291 | ||
292 | usymtab_supEntry (uentry_makeEndIter (name, fileloc_copy (g_currentloc))); | |
616915dd | 293 | ue = usymtab_supGlobalEntryReturn (ue); |
294 | } | |
295 | ||
296 | extern void nextIterParam (void) | |
297 | { | |
01a8227e | 298 | llassert (s_processingIterVars); |
616915dd | 299 | saveIterParamNo++; |
300 | } | |
301 | ||
302 | extern int iterParamNo (void) | |
303 | { | |
01a8227e | 304 | llassert (s_processingIterVars); |
616915dd | 305 | return saveIterParamNo; |
306 | } | |
307 | ||
308 | /* | |
309 | ** yucky hacks to put it in the right place | |
310 | */ | |
311 | ||
312 | /*@only@*/ uentry | |
313 | makeCurrentParam (idDecl t) | |
314 | { | |
315 | uentry ue; | |
316 | ||
317 | saveStoreLoc = fileloc_undefined; | |
318 | ||
319 | /* param number unknown */ | |
320 | ||
321 | ue = uentry_makeParam (t, 0); | |
322 | return ue; | |
323 | } | |
324 | ||
325 | ctype | |
326 | declareUnnamedEnum (enumNameList el) | |
327 | { | |
328 | ctype ret = usymtab_enumEnumNameListType (el); | |
329 | ctype rt; | |
330 | uentry e; | |
331 | ||
332 | if (ctype_isDefined (ret)) | |
333 | { | |
334 | rt = ret; | |
335 | e = uentry_makeEnumTagLoc (ctype_enumTag (rt), ret); | |
336 | ||
337 | reflectStorageClass (e); | |
338 | usymtab_supGlobalEntry (e); | |
339 | ||
340 | declareEnumList (el, ret, g_currentloc); | |
341 | enumNameList_free (el); | |
342 | } | |
343 | else | |
344 | { | |
345 | ctype ct = ctype_createEnum (fakeTag (), el); | |
346 | ||
347 | e = uentry_makeEnumTagLoc (ctype_enumTag (ctype_realType (ct)), ct); | |
348 | reflectStorageClass (e); | |
349 | ||
350 | e = usymtab_supGlobalEntryReturn (e); | |
351 | rt = uentry_getAbstractType (e); | |
352 | declareEnumList (el, ct, g_currentloc); | |
353 | } | |
354 | ||
355 | return (rt); | |
356 | } | |
357 | ||
358 | ctype | |
359 | declareEnum (cstring ename, enumNameList el) | |
360 | { | |
361 | ctype cet; | |
362 | uentry e; | |
363 | ||
364 | llassert (cstring_isDefined (ename)); | |
365 | ||
366 | cet = ctype_createEnum (ename, el); | |
367 | e = uentry_makeEnumTagLoc (ename, cet); | |
368 | reflectStorageClass (e); | |
369 | e = usymtab_supGlobalEntryReturn (e); | |
370 | cet = uentry_getType (e); | |
371 | declareEnumList (el, cet, uentry_whereLast (e)); | |
372 | return (uentry_getAbstractType (e)); | |
373 | } | |
374 | ||
375 | static void | |
376 | declareEnumList (enumNameList el, ctype c, fileloc loc) | |
377 | { | |
378 | bool boolnames = FALSE; | |
379 | bool othernames = FALSE; | |
380 | ||
381 | (void) context_getSaveLocation (); /* undefine it */ | |
382 | ||
383 | if (context_maybeSet (FLG_NUMENUMMEMBERS)) | |
384 | { | |
385 | int maxnum = context_getValue (FLG_NUMENUMMEMBERS); | |
386 | int num = enumNameList_size (el); | |
387 | ||
388 | if (num > maxnum) | |
389 | { | |
390 | voptgenerror | |
391 | (FLG_NUMENUMMEMBERS, | |
392 | message ("Enumerator %s declared with %d members (limit is set to %d)", | |
393 | ctype_unparse (c), num, maxnum), | |
394 | loc); | |
395 | } | |
396 | } | |
397 | ||
398 | enumNameList_elements (el, e) | |
399 | { | |
400 | uentry ue = usymtab_lookupExposeGlob (e); | |
401 | ctype ct = uentry_getType (ue); | |
402 | ||
403 | llassert (uentry_isEnumConstant (ue)); | |
404 | ||
405 | if (ctype_isUnknown (ct)) | |
406 | { | |
407 | uentry_setType (ue, c); | |
408 | } | |
409 | else | |
410 | { | |
411 | if (cstring_equal (e, context_getFalseName ()) | |
412 | || cstring_equal (e, context_getTrueName ())) | |
413 | { | |
414 | if (othernames) | |
415 | { | |
416 | if (optgenerror | |
417 | (FLG_INCONDEFS, | |
418 | message ("Enumerator mixes boolean name (%s) with " | |
419 | "non-boolean names", | |
420 | e), | |
421 | uentry_whereLast (ue))) | |
422 | { | |
423 | ; | |
424 | } | |
425 | } | |
426 | ||
427 | boolnames = TRUE; | |
428 | uentry_setType (ue, ctype_bool); | |
429 | DPRINTF (("Set type: %s / %s", | |
430 | uentry_unparse (ue), ctype_unparse (ctype_bool))); | |
431 | } | |
432 | else | |
433 | { | |
434 | if (boolnames) | |
435 | { | |
436 | if (optgenerror | |
437 | (FLG_INCONDEFS, | |
438 | message ("Enumerator mixes boolean names (%s, %s) with " | |
439 | "non-boolean name: %s", | |
440 | context_getTrueName (), | |
441 | context_getFalseName (), | |
442 | e), | |
443 | uentry_whereLast (ue))) | |
444 | { | |
445 | ; | |
446 | } | |
447 | } | |
448 | ||
449 | othernames = TRUE; | |
450 | } | |
451 | ||
452 | if (!ctype_match (c, ct)) | |
453 | { | |
454 | if (ctype_isDirectBool (ct)) | |
455 | { | |
456 | if (cstring_equal (e, context_getFalseName ()) | |
457 | || cstring_equal (e, context_getTrueName ())) | |
458 | { | |
459 | DPRINTF (("Here we are!")); | |
460 | } | |
461 | else | |
462 | { | |
463 | if (optgenerror | |
464 | (FLG_INCONDEFS, | |
465 | message ("Enumerator member %s declared with " | |
466 | "inconsistent type: %s", | |
467 | e, ctype_unparse (c)), | |
468 | uentry_whereLast (ue))) | |
469 | { | |
470 | uentry_showWhereSpecifiedExtra | |
471 | (ue, cstring_copy (ctype_unparse (ct))); | |
472 | } | |
473 | } | |
474 | } | |
475 | else | |
476 | { | |
477 | if (optgenerror | |
478 | (FLG_INCONDEFS, | |
479 | message ("Enumerator member %s declared with " | |
480 | "inconsistent type: %s", | |
481 | e, ctype_unparse (c)), | |
482 | uentry_whereLast (ue))) | |
483 | { | |
484 | uentry_showWhereSpecifiedExtra | |
485 | (ue, cstring_copy (ctype_unparse (ct))); | |
486 | } | |
487 | } | |
488 | } | |
489 | } | |
490 | } end_enumNameList_elements; | |
491 | } | |
492 | ||
493 | static /*@dependent@*/ uentryList currentParamList; | |
494 | ||
77d37419 | 495 | /*drl added 3-28-2002*/ |
470b7798 | 496 | /* this function takes a list of paramentar and generates a list |
497 | of constraints. | |
312c9815 | 498 | */ |
499 | ||
500 | /* drl modified 10/23/2002 | |
501 | ||
502 | The current semantics are generated constraints of the form MaxSet(p) >= 0 and MaxRead(p) >= 0 for all pointers | |
503 | unless the @out@ annotation has been applied to a parameter, then we only want to generate maxSet(p) > = 0 | |
470b7798 | 504 | */ |
2934b455 | 505 | |
c3e695ff | 506 | void setImplictfcnConstraints (void) |
470b7798 | 507 | { |
508 | uentryList params; | |
509 | sRef s; | |
510 | constraint c; | |
511 | params = currentParamList; | |
512 | ||
28bf4b0b | 513 | if (constraintList_isDefined(implicitFcnConstraints) ) |
bb25bea6 | 514 | constraintList_free(implicitFcnConstraints); |
515 | ||
c3e695ff | 516 | implicitFcnConstraints = constraintList_makeNew(); |
470b7798 | 517 | |
518 | uentryList_elements (params, el) | |
519 | { | |
520 | DPRINTF((message("setImplictfcnConstraints doing: %s", uentry_unparse(el) ) )); | |
521 | ||
522 | s = uentry_getSref(el); | |
523 | if (sRef_isReference (s) ) | |
524 | { | |
525 | DPRINTF((message ("%s is a pointer", sRef_unparse(s) ) )); | |
526 | } | |
527 | else | |
528 | { | |
529 | DPRINTF((message ("%s is NOT a pointer", sRef_unparse(s) ) )); | |
530 | } | |
531 | /*drl 4/26/01 | |
312c9815 | 532 | chagned this from MaxSet(s) == 0 to MaxSet(s) >= 0 */ |
470b7798 | 533 | c = constraint_makeSRefWriteSafeInt (s, 0); |
312c9815 | 534 | |
470b7798 | 535 | implicitFcnConstraints = constraintList_add(implicitFcnConstraints , c); |
312c9815 | 536 | |
537 | /*drl 10/23/2002 added support for out*/ | |
538 | if (!uentry_isOut(el) ) | |
539 | { | |
540 | c = constraint_makeSRefReadSafeInt (s, 0); | |
541 | ||
542 | implicitFcnConstraints = constraintList_add(implicitFcnConstraints , c); | |
543 | } | |
544 | ||
545 | ||
470b7798 | 546 | } |
547 | end_uentryList_elements; | |
312c9815 | 548 | DPRINTF((message("implicitFcnConstraints has been set to %s\n", |
549 | constraintList_print(implicitFcnConstraints) ) )); | |
470b7798 | 550 | } |
551 | ||
2934b455 | 552 | |
553 | /*@observer@*/ constraintList getImplicitFcnConstraints (void) | |
554 | { | |
555 | return implicitFcnConstraints; | |
556 | } | |
557 | ||
616915dd | 558 | void setCurrentParams (/*@dependent@*/ uentryList ue) |
559 | { | |
560 | currentParamList = ue; | |
561 | } | |
562 | ||
563 | void clearCurrentParams (void) | |
564 | { | |
565 | currentParamList = uentryList_undefined; | |
566 | } | |
567 | ||
568 | /* | |
569 | ** requires: uentry_isFunction (e) | |
570 | ** parameter names for current function are in currentParamList | |
571 | */ | |
572 | ||
573 | static void enterFunctionParams (uentryList params) | |
574 | { | |
575 | int paramno = 0; | |
576 | ||
577 | uentryList_elements (params, current) | |
578 | { | |
579 | if (uentry_hasName (current)) | |
580 | { | |
581 | uentry_setParamNo (current, paramno); | |
582 | usymtab_supEntry (uentry_copy (current)); | |
583 | } | |
584 | ||
585 | paramno++; | |
586 | } end_uentryList_elements; | |
587 | } | |
588 | ||
589 | ||
590 | extern void enterParamsTemp (void) | |
591 | { | |
592 | usymtab_enterScope (); | |
593 | enterFunctionParams (currentParamList); | |
594 | } | |
595 | ||
596 | extern void exitParamsTemp (void) | |
597 | { | |
598 | usymtab_quietPlainExitScope (); | |
599 | } | |
600 | ||
28bf4b0b | 601 | static /*@exposed@*/ uentry clabstract_globalDeclareFunction (idDecl tid) |
616915dd | 602 | { |
603 | ctype deftype = idDecl_getCtype (tid); | |
604 | ctype rettype; | |
605 | uentry ue; | |
606 | ||
607 | DPRINTF (("Global function: %s", idDecl_unparse (tid))); | |
28bf4b0b | 608 | |
616915dd | 609 | if (ctype_isFunction (deftype)) |
610 | { | |
28bf4b0b | 611 | rettype = ctype_getReturnType (deftype); |
616915dd | 612 | } |
613 | else | |
614 | { | |
615 | rettype = ctype_unknown; | |
616 | } | |
617 | ||
618 | /* | |
619 | ** check has been moved here... | |
620 | */ | |
621 | ||
622 | if (ctype_isFunction (idDecl_getCtype (tid))) | |
623 | { | |
624 | ue = uentry_makeIdFunction (tid); | |
625 | reflectSpecialCode (ue); | |
626 | reflectArgsUsed (ue); | |
01a8227e | 627 | reflectStorageClass (ue); |
628 | uentry_checkParams (ue); | |
629 | ||
630 | DPRINTF (("Supercede function: %s", uentry_unparseFull (ue))); | |
631 | ||
632 | ue = usymtab_supGlobalEntryReturn (ue); | |
633 | DPRINTF (("After supercede function: %s", uentry_unparseFull (ue))); | |
634 | ||
635 | DPRINTF (("Enter function: %s", uentry_unparseFull (ue))); | |
636 | context_enterFunction (ue); | |
637 | enterFunctionParams (uentry_getParams (ue)); | |
638 | ||
639 | resetStorageClass (); | |
640 | DPRINTF (("Function: %s", uentry_unparseFull (ue))); | |
641 | return (ue); | |
616915dd | 642 | } |
643 | else | |
644 | { | |
01a8227e | 645 | llparseerror (message ("Non-function declaration: %q", |
616915dd | 646 | idDecl_unparse (tid))); |
01a8227e | 647 | return (uentry_undefined); |
616915dd | 648 | } |
616915dd | 649 | } |
650 | ||
651 | /* | |
652 | ** for now, no type checking | |
653 | ** (must check later though!) | |
654 | */ | |
655 | ||
656 | static /*@only@*/ uentry globalDeclareOldStyleFunction (idDecl tid) | |
657 | { | |
658 | uentry ue; | |
659 | ||
660 | /* | |
661 | ** check has been moved here... | |
662 | */ | |
663 | ||
664 | if (cstring_equalLit (idDecl_observeId (tid), "main")) | |
665 | { | |
666 | context_setFlagTemp (FLG_MAINTYPE, FALSE); | |
667 | } | |
668 | ||
669 | ue = uentry_makeIdFunction (tid); | |
670 | reflectStorageClass (ue); | |
671 | reflectSpecialCode (ue); | |
672 | reflectArgsUsed (ue); | |
673 | uentry_setDefined (ue, g_currentloc); | |
28bf4b0b | 674 | uentry_checkParams (ue); |
616915dd | 675 | resetStorageClass (); |
7ebcc5bb | 676 | |
677 | /* context_enterOldStyleScope (); */ | |
678 | ||
616915dd | 679 | return (ue); |
680 | } | |
681 | ||
682 | static void oldStyleDeclareFunction (/*@only@*/ uentry e) | |
683 | { | |
684 | uentryList params = saveParamList; | |
685 | ctype rt = uentry_getType (e); | |
686 | ||
687 | llassert (ctype_isFunction (rt)); | |
688 | ||
ccf0a4a8 | 689 | if (uentry_hasStateClauseList (e) |
690 | || uentry_hasConditions (e)) | |
691 | { | |
692 | llfatalerror (message ("%q: Old-style function declaration uses a clause (rewrite with function parameters): %q", | |
693 | fileloc_unparse (g_currentloc), uentry_unparse (e))); | |
694 | } | |
695 | ||
616915dd | 696 | e = usymtab_supGlobalEntryReturn (e); |
697 | ||
698 | context_enterFunction (e); | |
699 | enterFunctionParams (params); | |
700 | saveParamList = uentryList_undefined; | |
701 | resetStorageClass (); | |
702 | } | |
703 | ||
7ebcc5bb | 704 | static void oldStyleCompleteFunction (/*@only@*/ uentry e) |
705 | { | |
706 | uentryList params = saveParamList; | |
707 | ctype rt = uentry_getType (e); | |
708 | ||
709 | llassert (ctype_isFunction (rt)); | |
710 | ||
711 | if (uentry_hasStateClauseList (e) | |
712 | || uentry_hasConditions (e)) | |
713 | { | |
714 | llfatalerror (message ("%q: Old-style function declaration uses a clause (rewrite with function parameters): %q", | |
715 | fileloc_unparse (g_currentloc), uentry_unparse (e))); | |
716 | } | |
717 | ||
718 | e = usymtab_supGlobalEntryReturn (e); | |
719 | ||
720 | context_completeOldStyleFunction (e); | |
721 | enterFunctionParams (params); | |
722 | saveParamList = uentryList_undefined; | |
723 | resetStorageClass (); | |
724 | } | |
725 | ||
28bf4b0b | 726 | void clabstract_declareFunction (idDecl tid) /*@globals undef saveFunction; @*/ |
616915dd | 727 | { |
728 | uentry ue; | |
729 | ||
730 | DPRINTF (("Declare function: %s", idDecl_unparse (tid))); | |
731 | ||
01a8227e | 732 | if (ctype_isUnknown (idDecl_getCtype (tid))) |
616915dd | 733 | { |
01a8227e | 734 | /* |
735 | ** No type, its really a plain name (int) declaration | |
736 | */ | |
737 | ||
738 | voptgenerror (FLG_IMPTYPE, | |
739 | message ("No type before declaration name (implicit int type): %q", | |
740 | idDecl_unparse (tid)), | |
741 | g_currentloc); | |
742 | tid = idDecl_replaceCtype (tid, ctype_int); | |
743 | processVariable (tid); | |
744 | saveFunction = uentry_undefined; | |
616915dd | 745 | } |
746 | else | |
747 | { | |
01a8227e | 748 | if (s_processingParams) |
616915dd | 749 | { |
01a8227e | 750 | ue = globalDeclareOldStyleFunction (tid); |
751 | saveFunction = ue; | |
752 | DPRINTF (("Set save function: %s", uentry_unparseFull (ue))); | |
616915dd | 753 | } |
754 | else | |
755 | { | |
01a8227e | 756 | saveFunction = uentry_undefined; |
757 | ||
758 | if (context_inRealFunction ()) | |
616915dd | 759 | { |
01a8227e | 760 | ue = uentry_makeVariableLoc (idDecl_observeId (tid), ctype_unknown); |
761 | ||
762 | llparseerror (message ("Function declared inside function: %q", | |
616915dd | 763 | idDecl_unparse (tid))); |
764 | ||
01a8227e | 765 | context_quietExitFunction (); |
766 | ue = usymtab_supEntryReturn (ue); | |
616915dd | 767 | } |
768 | else | |
769 | { | |
01a8227e | 770 | if (context_inInnerScope ()) |
771 | { | |
772 | llparseerror (message ("Declaration in inner context: %q", | |
773 | idDecl_unparse (tid))); | |
774 | ||
775 | sRef_setGlobalScope (); | |
776 | ue = uentry_makeVariableLoc (idDecl_observeId (tid), | |
777 | ctype_unknown); | |
778 | ue = usymtab_supGlobalEntryReturn (ue); | |
779 | sRef_clearGlobalScope (); | |
780 | } | |
781 | else | |
782 | { | |
783 | ue = clabstract_globalDeclareFunction (tid); | |
784 | } | |
616915dd | 785 | } |
01a8227e | 786 | |
787 | resetGlobals (); | |
616915dd | 788 | } |
b87215ab | 789 | |
01a8227e | 790 | resetStorageClass (); |
616915dd | 791 | } |
b87215ab | 792 | |
793 | idDecl_free (tid); | |
616915dd | 794 | } |
795 | ||
796 | void declareStaticFunction (idDecl tid) /*@globals undef saveFunction; @*/ | |
797 | { | |
798 | uentry ue; | |
799 | ||
800 | DPRINTF (("Declare static funciton: %s", idDecl_unparse (tid))); | |
801 | ||
01a8227e | 802 | if (s_processingParams) |
616915dd | 803 | { |
804 | ue = globalDeclareOldStyleFunction (tid); | |
805 | saveFunction = ue; | |
806 | } | |
807 | else | |
808 | { | |
809 | saveFunction = uentry_undefined; | |
810 | ||
811 | if (context_inRealFunction ()) | |
812 | { | |
813 | ue = uentry_makeVariableLoc (idDecl_observeId (tid), ctype_unknown); | |
814 | ||
815 | llparseerror (message ("Function declared inside function: %q", | |
816 | idDecl_unparse (tid))); | |
817 | ||
818 | context_quietExitFunction (); | |
819 | ue = usymtab_supEntryReturn (ue); | |
820 | } | |
821 | else | |
822 | { | |
823 | if (context_inInnerScope ()) | |
824 | { | |
825 | llparseerror (message ("Declaration in inner context: %q", | |
826 | idDecl_unparse (tid))); | |
827 | ||
828 | sRef_setGlobalScope (); | |
829 | ue = uentry_makeVariableLoc (idDecl_observeId (tid), | |
830 | ctype_unknown); | |
831 | ue = usymtab_supGlobalEntryReturn (ue); | |
832 | sRef_clearGlobalScope (); | |
833 | } | |
834 | else | |
835 | { | |
836 | ctype deftype = idDecl_getCtype (tid); | |
837 | ctype rettype; | |
838 | ||
839 | if (ctype_isFunction (deftype)) | |
840 | { | |
28bf4b0b | 841 | rettype = ctype_getReturnType (deftype); |
616915dd | 842 | } |
843 | else | |
844 | { | |
845 | rettype = ctype_unknown; | |
846 | } | |
847 | ||
848 | /* | |
849 | ** check has been moved here... | |
850 | */ | |
851 | ||
852 | if (ctype_isFunction (idDecl_getCtype (tid))) | |
853 | { | |
854 | ue = uentry_makeIdFunction (tid); | |
855 | reflectSpecialCode (ue); | |
856 | reflectArgsUsed (ue); | |
857 | } | |
858 | else | |
859 | { | |
01a8227e | 860 | DPRINTF (("Here we are!")); |
616915dd | 861 | llparseerror (message ("Inconsistent function declaration: %q", |
862 | idDecl_unparse (tid))); | |
863 | ||
864 | tid = idDecl_replaceCtype | |
865 | (tid, ctype_makeFunction (ctype_unknown, uentryList_undefined)); | |
866 | ue = uentry_makeIdFunction (tid); | |
867 | } | |
868 | ||
869 | reflectStorageClass (ue); | |
870 | uentry_setStatic (ue); | |
871 | ||
872 | uentry_checkParams (ue); | |
616915dd | 873 | |
874 | DPRINTF (("Sub global entry: %s", uentry_unparse (ue))); | |
875 | ue = usymtab_supGlobalEntryReturn (ue); | |
876 | ||
877 | context_enterFunction (ue); | |
878 | enterFunctionParams (uentry_getParams (ue)); | |
879 | resetStorageClass (); | |
880 | } | |
881 | } | |
882 | ||
883 | resetGlobals (); | |
884 | } | |
885 | ||
886 | resetStorageClass (); | |
887 | idDecl_free (tid); | |
888 | } | |
889 | ||
890 | void | |
891 | checkTypeDecl (uentry e, ctype rep) | |
892 | { | |
893 | cstring n = uentry_getName (e); | |
894 | ||
28bf4b0b | 895 | DPRINTF (("Check type decl: %s", uentry_unparseFull (e))); |
616915dd | 896 | |
897 | if (cstring_equal (context_getBoolName (), n)) | |
898 | { | |
899 | ctype rrep = ctype_realType (rep); | |
900 | ||
901 | /* | |
902 | ** for abstract enum types, we need to fix the enum members: | |
903 | ** they should have the abstract type, not the rep type. | |
904 | */ | |
905 | ||
906 | if (ctype_isEnum (ctype_realType (rrep))) | |
907 | { | |
908 | enumNameList el = ctype_elist (rrep); | |
909 | ||
910 | enumNameList_elements (el, ye) | |
911 | { | |
912 | if (usymtab_existsGlob (ye)) | |
913 | { | |
914 | uentry ue = usymtab_lookupSafe (ye); | |
915 | uentry_setType (ue, ctype_bool); | |
916 | } | |
917 | ||
918 | if (cstring_equal (context_getTrueName (), ye) | |
919 | || cstring_equal (context_getFalseName (), ye)) | |
920 | { | |
921 | ; | |
922 | } | |
923 | else | |
924 | { | |
925 | vgenhinterror | |
926 | (FLG_SYNTAX, | |
927 | message ("Member of boolean enumerated type definition " | |
928 | "does not match name set to represent TRUE " | |
929 | "or FALSE: %s", | |
930 | ye), | |
931 | message ("Use -boolfalse and -booltrue to set the " | |
932 | "name of false and true boolean values."), | |
933 | uentry_whereDefined (e)); | |
934 | } | |
935 | } end_enumNameList_elements; | |
936 | } | |
937 | } | |
938 | ||
939 | if (usymtab_exists (n)) | |
940 | { | |
941 | usymId llm = usymtab_getId (n); | |
942 | uentry le = usymtab_getTypeEntry (llm); | |
943 | ||
944 | uentry_setDeclared (e, g_currentloc); | |
6970c11b | 945 | uentry_setSref (e, sRef_makeGlobal (llm, uentry_getType (le), stateInfo_currentLoc ())); |
616915dd | 946 | |
947 | DPRINTF (("Here we are: %s / %s", | |
948 | n, context_getBoolName ())); | |
949 | ||
950 | if (uentry_isAbstractDatatype (le)) | |
951 | { | |
952 | ctype rrep = ctype_realType (rep); | |
953 | ||
28bf4b0b | 954 | DPRINTF (("Abstract type: %s", uentry_unparseFull (le))); |
955 | ||
616915dd | 956 | /* |
957 | ** for abstract enum types, we need to fix the enum members: | |
958 | ** they should have the abstract type, not the rep type. | |
959 | */ | |
960 | ||
961 | if (ctype_isEnum (ctype_realType (rrep))) | |
962 | { | |
963 | ctype at = uentry_getAbstractType (le); | |
964 | enumNameList el = ctype_elist (rrep); | |
965 | ||
966 | enumNameList_elements (el, ye) | |
967 | { | |
968 | if (usymtab_existsGlob (ye)) | |
969 | { | |
970 | uentry ue = usymtab_lookupSafe (ye); | |
971 | ||
972 | llassert (uentry_isEitherConstant (ue)); | |
2cecdaff | 973 | |
974 | /* evans 2002-04-22 */ | |
975 | if (ctype_isBool (uentry_getType (ue))) | |
976 | { | |
977 | /* | |
978 | ** If set using -booltrue or -boolfalse, don't change the type. | |
979 | */ | |
980 | } | |
981 | else | |
982 | { | |
983 | llassertprint (ctype_match (uentry_getType (ue), rrep), | |
984 | ("Bad enum: %s / %s", | |
985 | uentry_unparse (ue), | |
986 | ctype_unparse (rrep))); | |
987 | ||
988 | uentry_setType (ue, at); | |
989 | } | |
616915dd | 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 | |
1b8ae690 | 1121 | ** for nesting structs inside unions, but Splint does no related |
616915dd | 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 | { | |
288cbc5c | 1132 | return uentryList_single (uentry_makeUnnamedVariable (ct)); |
616915dd | 1133 | } |
f32c0a7e | 1134 | else if (ctype_isEnum (ct)) |
1135 | { | |
1136 | /* evans 2002-02-05: nothing to do for unnamed enum lists */ | |
1137 | return uentryList_undefined; | |
1138 | } | |
616915dd | 1139 | else |
b642ab7c | 1140 | { |
1141 | voptgenerror | |
1142 | (FLG_SYNTAX, | |
1143 | message ("Type name in field declarations: %s", qtype_unparse (q)), | |
1144 | g_currentloc); | |
616915dd | 1145 | } |
1146 | ||
1147 | return uentryList_undefined; | |
1148 | } | |
1149 | ||
1150 | void setStorageClass (storageClassCode sc) | |
1151 | { | |
1152 | storageClass = sc; | |
1153 | } | |
1154 | ||
1155 | void | |
1156 | setProcessingIterVars (uentry iter) | |
1157 | { | |
01a8227e | 1158 | s_processingIterVars = TRUE; |
616915dd | 1159 | currentIter = iter; |
1160 | saveIterParamNo = 0; | |
1161 | } | |
1162 | ||
1163 | void | |
1164 | setProcessingGlobalsList () | |
1165 | { | |
01a8227e | 1166 | s_processingGlobals = TRUE; |
616915dd | 1167 | fcnNoGlobals = FALSE; |
1168 | } | |
1169 | ||
1170 | static bool ProcessingGlobMods = FALSE; | |
1171 | ||
1172 | void | |
1173 | setProcessingGlobMods () | |
1174 | { | |
1175 | ProcessingGlobMods = TRUE; | |
1176 | } | |
1177 | ||
1178 | void | |
1179 | clearProcessingGlobMods () | |
1180 | { | |
1181 | ProcessingGlobMods = FALSE; | |
1182 | } | |
1183 | ||
1184 | bool | |
1185 | isProcessingGlobMods () | |
1186 | { | |
1187 | return (ProcessingGlobMods); | |
1188 | } | |
1189 | ||
1190 | static void resetGlobals (void) | |
1191 | { | |
01a8227e | 1192 | s_processingGlobals = FALSE; |
616915dd | 1193 | fcnNoGlobals = FALSE; |
1194 | } | |
1195 | ||
1196 | void | |
1197 | unsetProcessingGlobals () | |
1198 | { | |
01a8227e | 1199 | s_processingGlobals = FALSE; |
616915dd | 1200 | } |
1201 | ||
1202 | void | |
1203 | setProcessingVars (/*@only@*/ qtype q) | |
1204 | { | |
01a8227e | 1205 | s_processingVars = TRUE; |
616915dd | 1206 | qtype_free (processingType); |
1207 | processingType = q; | |
1208 | } | |
1209 | ||
1210 | static void | |
1211 | setGenericParamList (/*@dependent@*/ uentryList pm) | |
1212 | { | |
01a8227e | 1213 | s_processingParams = TRUE; |
616915dd | 1214 | saveParamList = pm; |
1215 | } | |
1216 | ||
1217 | void | |
e83c79ec | 1218 | setProcessingTypedef (qtype q) |
616915dd | 1219 | { |
01a8227e | 1220 | s_processingTypedef = TRUE; |
616915dd | 1221 | |
1222 | qtype_free (processingType); | |
1223 | processingType = q; | |
1224 | } | |
1225 | ||
1226 | void | |
1227 | unsetProcessingVars () | |
1228 | { | |
1229 | resetStorageClass (); | |
01a8227e | 1230 | s_processingVars = FALSE; |
616915dd | 1231 | } |
1232 | ||
1233 | void | |
7ebcc5bb | 1234 | oldStyleDoneParams () |
616915dd | 1235 | { |
01a8227e | 1236 | if (s_processingParams) |
616915dd | 1237 | { |
1238 | if (uentry_isInvalid (saveFunction)) | |
1239 | { | |
1240 | llbuglit ("unsetProcessingVars: no saved function\n"); | |
616915dd | 1241 | } |
1242 | else | |
1243 | { | |
28bf4b0b | 1244 | ctype ct = ctype_getReturnType (uentry_getType (saveFunction)); |
616915dd | 1245 | uentryList params = uentryList_copy (saveParamList); |
1246 | ctype ct2 = ctype_makeFunction (ct, params); | |
1247 | ||
1248 | uentry_setType (saveFunction, ct2); | |
01a8227e | 1249 | s_processingParams = FALSE; |
616915dd | 1250 | |
7ebcc5bb | 1251 | oldStyleCompleteFunction (saveFunction); |
616915dd | 1252 | saveFunction = uentry_undefined; |
1253 | resetGlobals (); | |
1254 | } | |
1255 | } | |
1256 | else | |
1257 | { | |
1258 | /* | |
1259 | ** If the paramlist used a type name, we could be here. | |
1260 | */ | |
1261 | ||
1262 | llfatalerror (message ("%q: Old-style function parameter list uses a " | |
1263 | "type name.", fileloc_unparse (g_currentloc))); | |
1264 | } | |
1265 | } | |
1266 | ||
1267 | void | |
1268 | checkDoneParams () | |
1269 | { | |
1270 | if (uentry_isValid (saveFunction)) | |
1271 | { | |
1272 | /* | |
1273 | ** old style declaration | |
1274 | */ | |
1275 | ||
28bf4b0b | 1276 | ctype ct = ctype_getReturnType (uentry_getType (saveFunction)); |
616915dd | 1277 | ctype ct2; |
1278 | ||
7ebcc5bb | 1279 | DPRINTF (("save function: %s", uentry_unparseFull (saveFunction))); |
1280 | ||
616915dd | 1281 | uentryList_elements (saveParamList, current) |
1282 | { | |
1283 | uentry_setType (current, ctype_int); /* all params are ints */ | |
1284 | } end_uentryList_elements; | |
1285 | ||
1286 | ct2 = ctype_makeParamsFunction (ct, uentryList_copy (saveParamList)); | |
1287 | ||
1288 | uentry_setType (saveFunction, ct2); | |
01a8227e | 1289 | s_processingParams = FALSE; |
616915dd | 1290 | |
1291 | oldStyleDeclareFunction (saveFunction); | |
1292 | saveFunction = uentry_undefined; | |
1293 | } | |
1294 | } | |
1295 | ||
e83c79ec | 1296 | void clabstract_declareType (/*@only@*/ exprNodeList decls, /*@only@*/ warnClause warn) |
1297 | { | |
01a8227e | 1298 | llassert (s_processingTypedef); |
e83c79ec | 1299 | |
80489f0a | 1300 | DPRINTF (("Declare type: %s", exprNodeList_unparse (decls))); |
1301 | ||
e83c79ec | 1302 | if (warnClause_isDefined (warn)) |
1303 | { | |
80489f0a | 1304 | DPRINTF (("Has a warn clause!")); |
1305 | DPRINTF (("Warn: %s", warnClause_unparse (warn))); | |
1306 | ||
e83c79ec | 1307 | exprNodeList_elements (decls, el) |
1308 | { | |
1309 | uentry ue = exprNode_getUentry (el); | |
1310 | cstring uname = uentry_getName (ue); | |
1311 | ||
1312 | DPRINTF (("Entry: %s", exprNode_unparse (el))); | |
1313 | ||
1314 | /* | |
1315 | ** Need to lookup again to make sure we have the right one... | |
1316 | */ | |
1317 | ||
15b3d2b2 | 1318 | ue = usymtab_lookupExposeGlob (uname); |
e83c79ec | 1319 | |
1320 | llassert (uentry_isValid (ue)); | |
1321 | llassert (uentry_isDatatype (ue)); | |
1322 | ||
1323 | DPRINTF (("Warning for %s: %s", | |
1324 | uentry_unparse (ue), warnClause_unparse (warn))); | |
1325 | ||
1326 | uentry_addWarning (ue, warnClause_copy (warn)); | |
80489f0a | 1327 | DPRINTF (("After add warning: %s", uentry_unparseFull (ue))); |
15b3d2b2 | 1328 | cstring_free (uname); |
e83c79ec | 1329 | } end_exprNodeList_elements; |
1330 | } | |
1331 | ||
1332 | warnClause_free (warn); | |
1333 | exprNodeList_free (decls); | |
1334 | unsetProcessingTypedef (); | |
1335 | } | |
1336 | ||
616915dd | 1337 | void |
1338 | unsetProcessingTypedef () | |
1339 | { | |
01a8227e | 1340 | s_processingTypedef = FALSE; |
616915dd | 1341 | } |
1342 | ||
1343 | void checkConstant (qtype t, idDecl id) | |
1344 | { | |
1345 | uentry e; | |
7534721d | 1346 | |
616915dd | 1347 | id = idDecl_fixBase (id, t); |
1348 | e = uentry_makeIdConstant (id); | |
7534721d | 1349 | |
616915dd | 1350 | reflectStorageClass (e); |
1351 | resetStorageClass (); | |
1352 | ||
d89a0c94 | 1353 | DPRINTF (("Constant: %s", uentry_unparseFull (e))); |
616915dd | 1354 | usymtab_supGlobalEntry (e); |
1355 | } | |
1356 | ||
1357 | void checkValueConstant (qtype t, idDecl id, exprNode e) | |
1358 | { | |
1359 | uentry ue; | |
1360 | ||
1361 | id = idDecl_fixBase (id, t); | |
1362 | ue = uentry_makeIdConstant (id); | |
1363 | reflectStorageClass (ue); | |
1364 | resetStorageClass (); | |
1365 | ||
1366 | if (exprNode_isDefined (e)) | |
1367 | { | |
1368 | if (!exprNode_matchType (uentry_getType (ue), e)) | |
1369 | { | |
1370 | (void) gentypeerror | |
1371 | (exprNode_getType (e), e, | |
1372 | uentry_getType (ue), exprNode_undefined, | |
1373 | message ("Constant %q initialized to type %t, expects %t: %s", | |
1374 | uentry_getName (ue), | |
1375 | exprNode_getType (e), | |
1376 | uentry_getType (ue), | |
1377 | exprNode_unparse (e)), | |
1378 | exprNode_loc (e)); | |
1379 | } | |
1380 | else | |
1381 | { | |
1382 | if (exprNode_hasValue (e)) | |
1383 | { | |
1384 | uentry_mergeConstantValue (ue, multiVal_copy (exprNode_getValue (e))); | |
1385 | } | |
b9904f57 | 1386 | else |
1387 | { | |
1388 | DPRINTF (("No value: %s", exprNode_unparse (e))); | |
1389 | } | |
616915dd | 1390 | } |
1391 | } | |
1392 | ||
b9904f57 | 1393 | DPRINTF (("Constant value: %s", uentry_unparseFull (ue))); |
616915dd | 1394 | usymtab_supGlobalEntry (ue); |
1395 | } | |
1396 | ||
01a8227e | 1397 | static void processVariable (idDecl t) |
616915dd | 1398 | { |
01a8227e | 1399 | uentry e; |
1400 | ctype ct; | |
7ebcc5bb | 1401 | |
01a8227e | 1402 | ct = ctype_realType (idDecl_getCtype (t)); |
1403 | ||
1404 | if (s_processingParams) | |
616915dd | 1405 | { |
1406 | cstring id = idDecl_getName (t); | |
01a8227e | 1407 | int paramno = uentryList_lookupRealName (saveParamList, id); |
28bf4b0b | 1408 | |
01a8227e | 1409 | if (paramno >= 0) |
616915dd | 1410 | { |
01a8227e | 1411 | uentry cparam = uentryList_getN (saveParamList, paramno); |
1412 | ||
1413 | DPRINTF (("Processing param: %s", uentry_unparseFull (cparam))); | |
1414 | uentry_setType (cparam, idDecl_getCtype (t)); | |
1415 | uentry_reflectQualifiers (cparam, idDecl_getQuals (t)); | |
1416 | uentry_setDeclaredOnly (cparam, context_getSaveLocation ()); | |
1417 | DPRINTF (("Processing param: %s", uentry_unparseFull (cparam))); | |
616915dd | 1418 | } |
1419 | else | |
1420 | { | |
01a8227e | 1421 | llfatalerrorLoc |
1422 | (message ("Old style declaration uses unlisted parameter: %s", | |
1423 | id)); | |
616915dd | 1424 | } |
1425 | } | |
01a8227e | 1426 | else |
616915dd | 1427 | { |
01a8227e | 1428 | fileloc loc; |
616915dd | 1429 | |
01a8227e | 1430 | if (context_inIterDef ()) |
616915dd | 1431 | { |
01a8227e | 1432 | cstring pname = makeParam (idDecl_observeId (t)); |
1433 | uentry p = usymtab_lookupSafe (pname); | |
1434 | ||
1435 | cstring_free (pname); | |
1436 | ||
1437 | if (uentry_isYield (p)) | |
616915dd | 1438 | { |
01a8227e | 1439 | e = uentry_makeParam (t, sRef_getParam (uentry_getSref (p))); |
1440 | uentry_checkYieldParam (p, e); | |
1441 | usymtab_supEntrySref (e); | |
1442 | return; | |
616915dd | 1443 | } |
1444 | } | |
01a8227e | 1445 | |
1446 | if ((hasSpecialCode () || argsUsed) | |
1447 | && ctype_isFunction (idDecl_getCtype (t))) | |
1448 | { | |
1449 | e = uentry_makeIdFunction (t); | |
1450 | reflectSpecialCode (e); | |
1451 | reflectArgsUsed (e); | |
1452 | } | |
616915dd | 1453 | else |
1454 | { | |
01a8227e | 1455 | e = uentry_makeIdVariable (t); |
1456 | } | |
1457 | ||
1458 | loc = uentry_whereDeclared (e); | |
1459 | ||
1460 | /* | |
1461 | if (context_inGlobalScope ()) | |
1462 | { | |
1463 | uentry_checkParams was here! | |
1464 | } | |
1465 | */ | |
1466 | ||
1467 | if (ctype_isFunction (uentry_getType (e))) | |
1468 | { | |
1469 | clabstract_prepareFunction (e); | |
1470 | } | |
1471 | ||
1472 | DPRINTF (("Superceding... %s", uentry_unparseFull (e))); | |
1473 | e = usymtab_supEntrySrefReturn (e); | |
1474 | DPRINTF (("After superceding... %s", uentry_unparseFull (e))); | |
1475 | ||
1476 | if (uentry_isExtern (e) && !context_inGlobalScope ()) | |
1477 | { | |
1478 | voptgenerror | |
1479 | (FLG_NESTEDEXTERN, | |
1480 | message ("Declaration using extern inside function scope: %q", | |
1481 | uentry_unparse (e)), | |
1482 | g_currentloc); | |
28bf4b0b | 1483 | |
01a8227e | 1484 | uentry_setDefined (e, fileloc_getExternal ()); |
1485 | sRef_setDefined (uentry_getSref (e), fileloc_getExternal ()); | |
1486 | } | |
1487 | ||
1488 | if (uentry_isFunction (e)) | |
1489 | { | |
1490 | if (!context_inXHFile ()) | |
616915dd | 1491 | { |
01a8227e | 1492 | checkParamNames (e); |
616915dd | 1493 | } |
01a8227e | 1494 | } |
1495 | ||
1496 | if (uentry_isVar (e) && uentry_isCheckedUnknown (e)) | |
1497 | { | |
1498 | sRef sr = uentry_getSref (e); | |
616915dd | 1499 | |
01a8227e | 1500 | if (sRef_isLocalVar (sr)) |
616915dd | 1501 | { |
01a8227e | 1502 | if (context_getFlag (FLG_IMPCHECKMODINTERNALS)) |
1503 | { | |
1504 | uentry_setCheckMod (e); | |
1505 | } | |
1506 | else | |
1507 | { | |
1508 | uentry_setUnchecked (e); | |
1509 | } | |
616915dd | 1510 | } |
01a8227e | 1511 | else if (sRef_isFileStatic (sr)) |
616915dd | 1512 | { |
01a8227e | 1513 | if (context_getFlag (FLG_IMPCHECKEDSTRICTSTATICS)) |
1514 | { | |
1515 | uentry_setCheckedStrict (e); | |
1516 | } | |
1517 | else if (context_getFlag (FLG_IMPCHECKEDSTATICS)) | |
28bf4b0b | 1518 | { |
01a8227e | 1519 | uentry_setChecked (e); |
1520 | } | |
1521 | else if (context_getFlag (FLG_IMPCHECKMODSTATICS)) | |
1522 | { | |
1523 | uentry_setCheckMod (e); | |
1524 | } | |
1525 | else | |
1526 | { | |
1527 | ; | |
28bf4b0b | 1528 | } |
616915dd | 1529 | } |
01a8227e | 1530 | else /* real global */ |
616915dd | 1531 | { |
01a8227e | 1532 | llassert (sRef_isRealGlobal (sr)); |
28bf4b0b | 1533 | |
01a8227e | 1534 | if (context_getFlag (FLG_IMPCHECKEDSTRICTGLOBALS)) |
616915dd | 1535 | { |
01a8227e | 1536 | uentry_setCheckedStrict (e); |
616915dd | 1537 | } |
01a8227e | 1538 | else if (context_getFlag (FLG_IMPCHECKEDGLOBALS)) |
616915dd | 1539 | { |
01a8227e | 1540 | uentry_setChecked (e); |
616915dd | 1541 | } |
01a8227e | 1542 | else if (context_getFlag (FLG_IMPCHECKMODGLOBALS)) |
616915dd | 1543 | { |
01a8227e | 1544 | uentry_setCheckMod (e); |
1545 | } | |
1546 | else | |
1547 | { | |
1548 | ; | |
616915dd | 1549 | } |
1550 | } | |
1551 | } | |
1552 | } | |
01a8227e | 1553 | } |
1554 | ||
1555 | void processNamedDecl (idDecl t) | |
1556 | { | |
1557 | if (qtype_isUndefined (processingType)) | |
1558 | { | |
1559 | processingType = qtype_create (ctype_int); | |
1560 | t = idDecl_fixBase (t, processingType); | |
1561 | ||
1562 | voptgenerror (FLG_IMPTYPE, | |
1563 | message ("No type before declaration name (implicit int type): %q", | |
1564 | idDecl_unparse (t)), | |
1565 | g_currentloc); | |
1566 | } | |
1567 | else | |
1568 | { | |
1569 | t = idDecl_fixBase (t, processingType); | |
1570 | } | |
1571 | ||
1572 | DPRINTF (("Declare: %s", idDecl_unparse (t))); | |
1573 | ||
1574 | if (s_processingGlobals) | |
1575 | { | |
1576 | cstring id = idDecl_getName (t); | |
1577 | uentry ue = usymtab_lookupSafe (id); | |
1578 | ||
1579 | if (!uentry_isValid (ue)) | |
1580 | { | |
1581 | llerror (FLG_UNRECOG, | |
1582 | message ("Variable used in globals list is undeclared: %s", id)); | |
1583 | } | |
1584 | else | |
1585 | { | |
1586 | if (!ctype_match (uentry_getType (ue), idDecl_getCtype (t))) | |
1587 | { | |
1588 | voptgenerror | |
1589 | (FLG_INCONDEFS, | |
1590 | message ("Variable %s used in globals list declared %s, " | |
1591 | "but listed as %s", | |
1592 | id, ctype_unparse (uentry_getType (ue)), | |
1593 | ctype_unparse (idDecl_getCtype (t))), | |
1594 | g_currentloc); | |
1595 | } | |
1596 | else | |
1597 | { | |
1598 | sRef sr = sRef_copy (uentry_getSref (ue)); | |
1599 | reflectGlobalQualifiers (sr, idDecl_getQuals (t)); | |
1600 | } | |
1601 | } | |
1602 | } | |
1603 | else if (s_processingVars) | |
1604 | { | |
1605 | processVariable (t); | |
1606 | } | |
1607 | else if (s_processingTypedef) | |
616915dd | 1608 | { |
1609 | ctype ct = idDecl_getCtype (t); | |
1610 | uentry e; | |
28bf4b0b | 1611 | |
616915dd | 1612 | DPRINTF (("Processing typedef: %s", ctype_unparse (ct))); |
1613 | ||
1614 | e = uentry_makeIdDatatype (t); | |
1615 | ||
1616 | if (cstring_equal (idDecl_getName (t), context_getBoolName ())) { | |
1617 | ctype rt = ctype_realType (ct); | |
1618 | ||
1619 | if (ctype_isEnum (rt)) { | |
1620 | ; | |
1621 | } else { | |
1622 | if (!(ctype_isInt (rt) | |
1623 | || ctype_isUnknown (rt) | |
1624 | || ctype_isChar (rt))) { | |
1625 | (void) llgenerror | |
1626 | (FLG_BOOLTYPE, | |
1627 | message ("Boolean type %s defined using non-standard type %s (integral, char or enum type expected)", | |
1628 | context_getBoolName (), | |
1629 | ctype_unparse (ct)), | |
1630 | uentry_whereLast (e)); | |
1631 | } | |
1632 | ||
1633 | ct = ctype_bool; | |
1634 | uentry_setType (e, ct); | |
1635 | } | |
1636 | } | |
1637 | ||
1638 | reflectStorageClass (e); | |
1639 | checkTypeDecl (e, ct); | |
1640 | ||
1641 | e = usymtab_supReturnTypeEntry (e); | |
616915dd | 1642 | } |
1643 | else | |
1644 | { | |
1645 | llparseerror (message ("Suspect missing struct or union keyword: %q", | |
1646 | idDecl_unparse (t))); | |
1647 | } | |
1648 | ||
1649 | } | |
1650 | ||
1651 | /* | |
1652 | ** moved from grammar | |
1653 | */ | |
1654 | ||
1655 | static idDecl fixStructDecl (/*@returned@*/ idDecl d) | |
1656 | { | |
1657 | if (ctype_isVisiblySharable (idDecl_getCtype (d)) | |
1658 | && context_getFlag (FLG_STRUCTIMPONLY)) | |
1659 | { | |
1660 | if (!qualList_hasAliasQualifier (idDecl_getQuals (d))) | |
1661 | { | |
1662 | if (qualList_hasExposureQualifier (idDecl_getQuals (d))) | |
1663 | { | |
1664 | idDecl_addQual (d, qual_createDependent ()); | |
1665 | } | |
1666 | else | |
1667 | { | |
1668 | idDecl_addQual (d, qual_createImpOnly ()); | |
1669 | } | |
1670 | } | |
1671 | } | |
1672 | ||
1673 | return d; | |
1674 | } | |
1675 | ||
1676 | ctype | |
1677 | declareUnnamedStruct (/*@only@*/ uentryList f) | |
1678 | { | |
28bf4b0b | 1679 | DPRINTF (("Unnamed struct: %s", uentryList_unparse (f))); |
1680 | ||
616915dd | 1681 | if (context_maybeSet (FLG_NUMSTRUCTFIELDS)) |
1682 | { | |
1683 | int num = uentryList_size (f); | |
1684 | int max = context_getValue (FLG_NUMSTRUCTFIELDS); | |
1685 | ||
1686 | if (num > max) | |
1687 | { | |
1688 | voptgenerror | |
1689 | (FLG_NUMSTRUCTFIELDS, | |
1690 | message ("Structure declared with %d fields " | |
1691 | "(limit is set to %d)", | |
1692 | num, max), | |
1693 | g_currentloc); | |
1694 | } | |
1695 | } | |
1696 | ||
1697 | return (ctype_createUnnamedStruct (f)); | |
1698 | } | |
1699 | ||
1700 | ctype | |
1701 | declareUnnamedUnion (/*@only@*/ uentryList f) | |
1702 | { | |
288cbc5c | 1703 | DPRINTF (("Unnamed union: %s", uentryList_unparse (f))); |
1704 | ||
616915dd | 1705 | if (context_maybeSet (FLG_NUMSTRUCTFIELDS)) |
1706 | { | |
1707 | int num = uentryList_size (f); | |
1708 | int max = context_getValue (FLG_NUMSTRUCTFIELDS); | |
1709 | ||
1710 | if (num > max) | |
1711 | { | |
1712 | voptgenerror | |
1713 | (FLG_NUMSTRUCTFIELDS, | |
1714 | message ("Union declared with %d fields " | |
1715 | "(limit is set to %d)", | |
1716 | num, max), | |
1717 | g_currentloc); | |
1718 | } | |
1719 | } | |
1720 | ||
1721 | return (ctype_createUnnamedUnion (f)); | |
1722 | } | |
1723 | ||
1724 | ctype declareStruct (cstring id, /*@only@*/ uentryList f) | |
1725 | { | |
1726 | ctype ct; | |
1727 | uentry ue; | |
1728 | int num = uentryList_size (f); | |
1729 | ||
288cbc5c | 1730 | DPRINTF (("Declare struct: %s / %s [%d]", id, uentryList_unparse (f), |
1731 | uentryList_size (f))); | |
28bf4b0b | 1732 | |
616915dd | 1733 | ct = ctype_createStruct (cstring_copy (id), f); |
28bf4b0b | 1734 | |
1735 | DPRINTF (("Ctype: %s", ctype_unparse (ct))); | |
1736 | ||
616915dd | 1737 | ue = uentry_makeStructTagLoc (id, ct); |
1738 | ||
28bf4b0b | 1739 | DPRINTF (("ue: %s", uentry_unparseFull (ue))); |
1740 | ||
616915dd | 1741 | if (context_maybeSet (FLG_NUMSTRUCTFIELDS)) |
1742 | { | |
1743 | int max = context_getValue (FLG_NUMSTRUCTFIELDS); | |
1744 | ||
1745 | if (num > max) | |
1746 | { | |
1747 | voptgenerror | |
1748 | (FLG_NUMSTRUCTFIELDS, | |
1749 | message ("Structure %q declared with %d fields " | |
1750 | "(limit is set to %d)", | |
1751 | uentry_getName (ue), num, max), | |
1752 | uentry_whereLast (ue)); | |
1753 | } | |
1754 | } | |
1755 | ||
1756 | return (usymtab_supTypeEntry (ue)); | |
1757 | } | |
1758 | ||
1759 | ctype declareUnion (cstring id, uentryList f) | |
1760 | { | |
1761 | ctype ct; | |
1762 | uentry ue; | |
1763 | int num = uentryList_size (f); | |
1764 | ||
1765 | ct = ctype_createUnion (cstring_copy (id), f); | |
1766 | ue = uentry_makeUnionTagLoc (id, ct); | |
1767 | ||
1768 | if (context_maybeSet (FLG_NUMSTRUCTFIELDS)) | |
1769 | { | |
1770 | int max = context_getValue (FLG_NUMSTRUCTFIELDS); | |
1771 | ||
1772 | if (num > max) | |
1773 | { | |
1774 | voptgenerror | |
1775 | (FLG_NUMSTRUCTFIELDS, | |
1776 | message ("Union %q declared with %d fields " | |
1777 | "(limit is set to %d)", | |
1778 | uentry_getName (ue), num, max), | |
1779 | uentry_whereLast (ue)); | |
1780 | } | |
1781 | } | |
1782 | ||
1783 | return (usymtab_supTypeEntry (ue)); | |
1784 | } | |
1785 | ||
1786 | ctype handleStruct (/*@only@*/ cstring id) | |
1787 | { | |
1788 | if (usymtab_existsStructTag (id)) | |
1789 | { | |
1790 | ctype ct = uentry_getAbstractType (usymtab_lookupStructTag (id)); | |
1791 | ||
1792 | cstring_free (id); | |
1793 | return ct; | |
1794 | } | |
1795 | else | |
1796 | { | |
1797 | return (ctype_createForwardStruct (id)); | |
1798 | } | |
1799 | } | |
1800 | ||
1801 | ctype handleUnion (/*@only@*/ cstring id) | |
1802 | { | |
1803 | if (usymtab_existsUnionTag (id)) | |
1804 | { | |
1805 | ctype ret = uentry_getAbstractType (usymtab_lookupUnionTag (id)); | |
1806 | cstring_free (id); | |
1807 | return (ret); | |
1808 | } | |
1809 | else | |
1810 | { | |
1811 | return (ctype_createForwardUnion (id)); | |
1812 | } | |
1813 | } | |
1814 | ||
1815 | ctype | |
1816 | handleEnum (cstring id) | |
1817 | { | |
1818 | if (usymtab_existsEnumTag (id)) | |
1819 | { | |
1820 | ctype ret = uentry_getAbstractType (usymtab_lookupEnumTag (id)); | |
1821 | cstring_free (id); | |
1822 | return ret; | |
1823 | } | |
1824 | else | |
1825 | { | |
140c27a8 | 1826 | return (ctype_createForwardEnum (id)); |
616915dd | 1827 | } |
1828 | } | |
1829 | ||
1830 | bool processingIterVars (void) | |
1831 | { | |
01a8227e | 1832 | return s_processingIterVars; |
616915dd | 1833 | } |
1834 | ||
1835 | uentry getCurrentIter (void) | |
1836 | { | |
1837 | return currentIter; | |
1838 | } | |
1839 | ||
1840 | static bool flipOldStyle = FALSE; | |
1841 | static bool flipNewStyle = TRUE; | |
1842 | ||
1843 | void setFlipOldStyle () { flipOldStyle = TRUE; } | |
1844 | bool isFlipOldStyle () { return flipOldStyle; } | |
1845 | bool isNewStyle () { return flipNewStyle; } | |
1846 | void setNewStyle () { flipNewStyle = TRUE; } | |
1847 | ||
1848 | /*@dependent@*/ uentryList handleParamIdList (/*@dependent@*/ uentryList params) | |
1849 | { | |
1850 | int paramno = 0; | |
1851 | ||
1852 | /* | |
1853 | ** this is a really YUCKY hack to handle old style | |
1854 | ** declarations. | |
1855 | */ | |
1856 | ||
1857 | voptgenerror (FLG_OLDSTYLE, | |
1858 | cstring_makeLiteral ("Old style function declaration"), | |
1859 | g_currentloc); | |
1860 | ||
7ebcc5bb | 1861 | DPRINTF (("Handle old style params: %s", uentryList_unparseFull (params))); |
1862 | ||
616915dd | 1863 | uentryList_elements (params, current) |
1864 | { | |
1865 | uentry_setParam (current); | |
6970c11b | 1866 | uentry_setSref (current, sRef_makeParam (paramno, ctype_unknown, stateInfo_makeLoc (uentry_whereLast (current)))); |
616915dd | 1867 | paramno++; |
1868 | } end_uentryList_elements; | |
1869 | ||
1870 | setGenericParamList (params); | |
1871 | g_expectingTypeName = TRUE; | |
1872 | ||
1873 | return params; | |
1874 | } | |
1875 | ||
1876 | /*@dependent@*/ uentryList handleParamTypeList (/*@returned@*/ uentryList params) | |
1877 | { | |
1878 | if (flipOldStyle) | |
1879 | { | |
1880 | uentryList_fixMissingNames (params); | |
1881 | ||
1882 | voptgenerror (FLG_OLDSTYLE, | |
1883 | cstring_makeLiteral ("Old style function declaration."), | |
1884 | g_currentloc); | |
1885 | ||
1886 | setGenericParamList (params); | |
1887 | flipOldStyle = FALSE; | |
1888 | g_expectingTypeName = TRUE; | |
1889 | } | |
1890 | ||
1891 | return (params); | |
1892 | } | |
1893 | ||
1894 | void | |
1895 | doVaDcl () | |
1896 | { | |
1897 | ctype c = ctype_unknown; | |
1898 | cstring id = cstring_makeLiteral ("va_alist"); | |
1899 | uentry e; | |
1900 | ||
01a8227e | 1901 | if (s_processingParams) |
616915dd | 1902 | { |
1903 | int i = uentryList_lookupRealName (saveParamList, id); | |
1904 | ||
1905 | if (i >= 0) | |
1906 | { | |
6970c11b | 1907 | fileloc loc = context_getSaveLocation (); |
1908 | e = uentry_makeVariableSrefParam (id, c, loc, sRef_makeParam (i, c, stateInfo_makeLoc (loc))); | |
616915dd | 1909 | } |
1910 | else | |
1911 | { | |
1912 | e = uentry_undefined; /* suppress gcc message */ | |
1913 | llfatalerrorLoc (cstring_makeLiteral ("va_dcl used without va_alist")); | |
1914 | } | |
1915 | } | |
1916 | else | |
1917 | { | |
1918 | llerror (FLG_SYNTAX, cstring_makeLiteral ("va_dcl used outside of function declaration")); | |
1919 | e = uentry_makeVariableLoc (id, c); | |
1920 | } | |
1921 | ||
1922 | cstring_free (id); | |
1923 | uentry_setUsed (e, g_currentloc); | |
1924 | usymtab_supEntrySref (e); | |
1925 | } | |
1926 | ||
28bf4b0b | 1927 | /*@exposed@*/ sRef modListPointer (/*@exposed@*/ sRef s) |
616915dd | 1928 | { |
1929 | ctype ct = sRef_getType (s); | |
1930 | ctype rt = ctype_realType (ct); | |
1931 | ||
1932 | if (ctype_isAP (rt)) | |
1933 | { | |
1934 | if (context_inHeader () && ctype_isAbstract (ct)) | |
1935 | { | |
1936 | voptgenerror | |
1937 | (FLG_ABSTRACT, | |
1938 | message | |
1939 | ("Modifies clause in header file dereferences abstract " | |
1940 | "type %s (interface modifies clause should not depend " | |
1941 | "on or expose type representation): %q", | |
1942 | ctype_unparse (ct), | |
1943 | sRef_unparse (s)), | |
1944 | g_currentloc); | |
1945 | } | |
1946 | ||
1947 | return (sRef_constructPointer (s)); | |
1948 | } | |
1949 | else | |
1950 | { | |
1951 | if (ctype_isKnown (rt)) | |
1952 | { | |
1953 | voptgenerror | |
1954 | (FLG_TYPE, | |
1955 | message ("Implementation modifies clause dereferences non-pointer (type %s): %q", | |
1956 | ctype_unparse (rt), | |
1957 | sRef_unparse (s)), | |
1958 | g_currentloc); | |
1959 | } | |
1960 | ||
1961 | return s; | |
1962 | } | |
1963 | } | |
1964 | ||
1965 | /*@exposed@*/ sRef modListFieldAccess (sRef s, cstring f) | |
1966 | { | |
1967 | ctype ct = sRef_getType (s); | |
1968 | ctype rt = ctype_realType (ct); | |
1969 | ||
1970 | if (ctype_isStructorUnion (rt)) | |
1971 | { | |
1972 | uentry tf = uentryList_lookupField (ctype_getFields (rt), f); | |
1973 | ||
1974 | if (uentry_isUndefined (tf)) | |
1975 | { | |
1976 | voptgenerror (FLG_TYPE, | |
1977 | message ("Modifies list accesses non-existent " | |
1978 | "field %s of %t: %q", f, ct, | |
1979 | sRef_unparse (s)), | |
1980 | g_currentloc); | |
1981 | ||
1982 | cstring_free (f); | |
1983 | return sRef_undefined; | |
1984 | } | |
1985 | else | |
1986 | { | |
1987 | if (ctype_isAbstract (ct) && context_inHeader ()) | |
1988 | { | |
1989 | voptgenerror | |
1990 | (FLG_ABSTRACT, | |
1991 | message | |
1992 | ("Modifies clause in header file accesses abstract " | |
1993 | "type %s (interface modifies clause should not depend " | |
1994 | "on or expose type representation): %q", | |
1995 | ctype_unparse (ct), | |
1996 | sRef_unparse (s)), | |
1997 | g_currentloc); | |
1998 | } | |
1999 | } | |
2000 | ||
2001 | cstring_markOwned (f); | |
2002 | return (sRef_makeField (s, f)); | |
2003 | } | |
2004 | else | |
2005 | { | |
2006 | voptgenerror | |
2007 | (FLG_TYPE, | |
2008 | message ("Modifies clause dereferences non-pointer (type %s): %q", | |
2009 | ctype_unparse (rt), | |
2010 | sRef_unparse (s)), | |
2011 | g_currentloc); | |
2012 | ||
2013 | cstring_free (f); | |
2014 | return s; | |
2015 | } | |
2016 | } | |
2017 | ||
28bf4b0b | 2018 | /*@dependent@*/ sRef clabstract_unrecognizedGlobal (cstring s) |
616915dd | 2019 | { |
2020 | if (cstring_equalLit (s, "nothing")) | |
2021 | { | |
2022 | return sRef_makeNothing (); | |
2023 | } | |
2024 | else if (cstring_equalLit (s, "internalState")) | |
2025 | { | |
2026 | return sRef_makeInternalState (); | |
2027 | } | |
2028 | else if (cstring_equalLit (s, "fileSystem") | |
2029 | || cstring_equalLit (s, "systemState")) | |
2030 | { | |
2031 | return sRef_makeSystemState (); | |
2032 | } | |
2033 | else | |
2034 | { | |
2035 | voptgenerror | |
2036 | (FLG_UNRECOG, | |
2037 | message ("Unrecognized identifier in globals list: %s", s), | |
2038 | g_currentloc); | |
2039 | ||
2040 | return sRef_undefined; | |
2041 | } | |
2042 | } | |
2043 | ||
2044 | /*@exposed@*/ sRef modListArrowAccess (sRef s, cstring f) | |
2045 | { | |
2046 | ctype ct = sRef_getType (s); | |
2047 | ctype rt = ctype_realType (ct); | |
2048 | ||
2049 | if (ctype_isRealPointer (rt)) | |
2050 | { | |
2051 | ctype b = ctype_baseArrayPtr (rt); | |
2052 | ctype rb = ctype_realType (b); | |
2053 | ||
2054 | if (ctype_isStructorUnion (rb)) | |
2055 | { | |
2056 | uentry tf = uentryList_lookupField (ctype_getFields (rb), f); | |
2057 | ||
2058 | if (uentry_isUndefined (tf)) | |
2059 | { | |
2060 | voptgenerror (FLG_TYPE, | |
2061 | message ("Modifies list arrow accesses non-existent " | |
2062 | "field %s of %t: %q", f, b, | |
2063 | sRef_unparse (s)), | |
2064 | g_currentloc); | |
2065 | ||
2066 | cstring_free (f); | |
2067 | return sRef_undefined; | |
2068 | } | |
2069 | else | |
2070 | { | |
2071 | if (context_inHeader ()) | |
2072 | { | |
2073 | if (ctype_isAbstract (b)) | |
2074 | { | |
2075 | voptgenerror | |
2076 | (FLG_ABSTRACT, | |
2077 | message | |
2078 | ("Modifies clause in header file arrow accesses abstract " | |
2079 | "type %s (interface modifies clause should not depend " | |
2080 | "on or expose type representation): %q", | |
2081 | ctype_unparse (b), | |
2082 | sRef_unparse (s)), | |
2083 | g_currentloc); | |
2084 | } | |
2085 | } | |
2086 | else | |
2087 | { | |
146e25eb | 2088 | if (ctype_isAbstract (rt)) |
616915dd | 2089 | { |
2090 | voptgenerror | |
2091 | (FLG_ABSTRACT, | |
2092 | message | |
146e25eb | 2093 | ("Modifies clause arrow accesses inaccessible abstract " |
616915dd | 2094 | "type %s (interface modifies clause should not depend " |
2095 | "on or expose type representation): %q", | |
146e25eb | 2096 | ctype_unparse (rt), |
616915dd | 2097 | sRef_unparse (s)), |
2098 | g_currentloc); | |
2099 | } | |
2100 | } | |
2101 | } | |
2102 | ||
2103 | cstring_markOwned (f); | |
2104 | return (sRef_makeArrow (s, f)); | |
2105 | } | |
2106 | else | |
2107 | { | |
2108 | voptgenerror | |
2109 | (FLG_TYPE, | |
2110 | message ("Modifies clause arrow accesses pointer to " | |
2111 | "non-structure (type %s): %q", | |
2112 | ctype_unparse (rt), | |
2113 | sRef_unparse (s)), | |
2114 | g_currentloc); | |
2115 | } | |
2116 | } | |
2117 | else | |
2118 | { | |
2119 | voptgenerror | |
2120 | (FLG_TYPE, | |
2121 | message ("Modifies clause arrow accesses non-pointer (type %s): %q", | |
2122 | ctype_unparse (rt), | |
2123 | sRef_unparse (s)), | |
2124 | g_currentloc); | |
2125 | } | |
2126 | ||
2127 | cstring_free (f); | |
2128 | return s; | |
2129 | } | |
2130 | ||
28bf4b0b | 2131 | sRef checkStateClausesId (uentry ue) |
616915dd | 2132 | { |
2133 | cstring s = uentry_rawName (ue); | |
2134 | ||
28bf4b0b | 2135 | if (sRef_isFileOrGlobalScope (uentry_getSref (ue))) |
616915dd | 2136 | { |
2137 | voptgenerror | |
28bf4b0b | 2138 | (FLG_COMMENTERROR, |
1b8ae690 | 2139 | message ("Global variable %s used state clause. (Global variables " |
2140 | "are not recognized in state clauses. If there is " | |
616915dd | 2141 | "sufficient interest in support for this, it may be " |
2142 | "added to a future release. Send mail to " | |
155af98d | 2143 | "info@splint.org.)", |
616915dd | 2144 | s), |
2145 | g_currentloc); | |
2146 | ||
2147 | return sRef_undefined; | |
2148 | } | |
2149 | else | |
2150 | { | |
2151 | if (cstring_equalLit (s, "result")) | |
2152 | { | |
2153 | if (optgenerror | |
2154 | (FLG_SYNTAX, | |
2155 | message ("Special clause list uses %s which is a variable and has special " | |
2156 | "meaning in a modifies list. (Special meaning assumed.)", s), | |
2157 | g_currentloc)) | |
2158 | { | |
2159 | uentry_showWhereDeclared (ue); | |
2160 | } | |
2161 | } | |
2162 | ||
2163 | return uentry_getSref (ue); | |
2164 | } | |
2165 | } | |
9280addf | 2166 | /*drl:1/19/2001 |
2167 | oops to 1/8/2000 | |
2168 | date is wronge .. | |
2169 | don;t know what the real date is... | |
2170 | ||
2171 | */ | |
616915dd | 2172 | |
2173 | /*drl | |
2174 | added 1/8/2000 | |
2175 | based on checkSpecClausesId | |
2176 | called by grammar | |
2177 | */ | |
b37cf05e | 2178 | |
616915dd | 2179 | sRef checkbufferConstraintClausesId (uentry ue) |
2180 | { | |
5ca29538 | 2181 | sRef sr; |
616915dd | 2182 | cstring s = uentry_rawName (ue); |
08eb3d0e | 2183 | |
616915dd | 2184 | if (cstring_equalLit (s, "result")) |
2185 | { | |
2186 | if (optgenerror | |
2187 | (FLG_SYNTAX, | |
08eb3d0e | 2188 | message ("Function clause list uses %s which is a variable and has special " |
616915dd | 2189 | "meaning in a modifies list. (Special meaning assumed.)", s), |
2190 | g_currentloc)) | |
2191 | { | |
2192 | uentry_showWhereDeclared (ue); | |
2193 | } | |
2194 | } | |
2195 | ||
5ca29538 | 2196 | DPRINTF (("constraint id: %s", uentry_unparseFull (ue))); |
2197 | sr = uentry_getSref (ue); | |
2198 | ||
2199 | if (sRef_isInvalid (sr) ) | |
2200 | { | |
2201 | llfatalerrorLoc (cstring_makeLiteral("Macro defined constants can not be used in function constraints unless they are specifed with the constant annotation. To use a macro defined constant include an annotation of the form /*@constant <type> <name>=<value>@*/ somewhere before the function constraint. This restriction may be removed in future releases if it is determined to be excessively burdensome." )); | |
2202 | } | |
2203 | return sRef_saveCopy (sr); /*@i523 why the saveCopy? */ | |
616915dd | 2204 | } |
2205 | ||
2206 | void checkModifiesId (uentry ue) | |
2207 | { | |
2208 | cstring s = uentry_rawName (ue); | |
2209 | ||
2210 | if (cstring_equalLit (s, "nothing") | |
2211 | || cstring_equalLit (s, "internalState") | |
2212 | || cstring_equalLit (s, "systemState") | |
2213 | || (cstring_equalLit (s, "fileSystem"))) | |
2214 | { | |
2215 | if (optgenerror | |
2216 | (FLG_SYNTAX, | |
2217 | message ("Modifies list uses %s which is a variable and has special " | |
2218 | "meaning in a modifies list. (Special meaning assumed.)", s), | |
2219 | g_currentloc)) | |
2220 | { | |
2221 | uentry_showWhereDeclared (ue); | |
2222 | } | |
2223 | } | |
2224 | } | |
2225 | ||
2226 | /*@exposed@*/ sRef fixModifiesId (cstring s) | |
2227 | { | |
2228 | sRef ret; | |
2229 | cstring pname = makeParam (s); | |
2230 | uentry ue = usymtab_lookupSafe (pname); | |
2231 | ||
2232 | cstring_free (pname); | |
2233 | ||
2234 | if (cstring_equalLit (s, "nothing")) | |
2235 | { | |
2236 | ret = sRef_makeNothing (); | |
2237 | } | |
2238 | else if (cstring_equalLit (s, "internalState")) | |
2239 | { | |
2240 | ret = sRef_makeInternalState (); | |
2241 | } | |
2242 | else if (cstring_equalLit (s, "fileSystem") | |
2243 | || cstring_equalLit (s, "systemState")) | |
2244 | { | |
2245 | ret = sRef_makeSystemState (); | |
2246 | } | |
2247 | else | |
2248 | { | |
2249 | ret = sRef_undefined; | |
2250 | } | |
2251 | ||
2252 | if (sRef_isValid (ret)) | |
2253 | { | |
2254 | if (uentry_isValid (ue)) | |
2255 | { | |
2256 | voptgenerror | |
2257 | (FLG_SYNTAX, | |
2258 | message ("Modifies list uses %s which is a parameter and has special " | |
2259 | "meaning in a modifies list. (Special meaning assumed.)", s), | |
2260 | g_currentloc); | |
2261 | } | |
2262 | } | |
2263 | else | |
2264 | { | |
2265 | if (uentry_isValid (ue)) | |
2266 | { | |
2267 | ret = uentry_getSref (ue); | |
2268 | } | |
2269 | else | |
2270 | { | |
abd7f895 | 2271 | fileloc loc = fileloc_decColumn (g_currentloc, size_toInt (cstring_length (s))); |
616915dd | 2272 | ret = sRef_undefined; |
2273 | ||
2274 | voptgenerror | |
2275 | (FLG_UNRECOG, | |
2276 | message ("Unrecognized identifier in modifies comment: %s", s), | |
2277 | loc); | |
2278 | ||
2279 | fileloc_free (loc); | |
2280 | } | |
2281 | } | |
2282 | ||
2283 | return ret; | |
2284 | } | |
2285 | ||
28bf4b0b | 2286 | sRef fixStateClausesId (cstring s) |
616915dd | 2287 | { |
2288 | sRef ret; | |
2289 | cstring pname = makeParam (s); | |
2290 | uentry ue = usymtab_lookupSafe (pname); | |
2291 | ||
2292 | cstring_free (pname); | |
2293 | ||
2294 | if (cstring_equalLit (s, "result")) | |
2295 | { | |
b072092f | 2296 | ret = sRef_makeResult (ctype_unknown); |
616915dd | 2297 | } |
2298 | else | |
2299 | { | |
2300 | ret = sRef_undefined; | |
2301 | } | |
2302 | ||
2303 | if (sRef_isValid (ret)) | |
2304 | { | |
2305 | if (uentry_isValid (ue)) | |
2306 | { | |
2307 | voptgenerror | |
2308 | (FLG_SYNTAX, | |
d9a28762 | 2309 | message ("Function clause uses %s which is a parameter and has special " |
2310 | "meaning in a function clause. (Special meaning assumed.)", s), | |
616915dd | 2311 | g_currentloc); |
2312 | } | |
2313 | } | |
2314 | else | |
2315 | { | |
2316 | if (uentry_isValid (ue)) | |
2317 | { | |
2318 | ret = uentry_getSref (ue); | |
2319 | ||
28bf4b0b | 2320 | if (sRef_isFileOrGlobalScope (ret)) |
616915dd | 2321 | { |
2322 | voptgenerror | |
2323 | (FLG_SYNTAX, | |
d9a28762 | 2324 | message ("Global variable %s used in function clause. (Global variables " |
2325 | "are not recognized in function clauses. If there is " | |
616915dd | 2326 | "sufficient interest in support for this, it may be " |
2327 | "added to a future release. Send mail to " | |
155af98d | 2328 | "info@splint.org.)", |
616915dd | 2329 | s), |
2330 | g_currentloc); | |
2331 | ||
2332 | ret = sRef_undefined; | |
2333 | } | |
2334 | } | |
2335 | else | |
2336 | { | |
86d93ed3 | 2337 | /*@i222@*/ |
2338 | /*drl handle structure invariant */ | |
2339 | ||
2340 | /*@i222@*/ | |
2341 | /*check that we're in a structure */ | |
4dd72714 | 2342 | # if 0\r |
2343 | /*@unused@*/ uentryList ueL; | |
86d93ed3 | 2344 | /*@unused@*/ uentry ue2; |
4dd72714 | 2345 | /*@unused@*/ ctype ct;\r |
2346 | # endif | |
abd7f895 | 2347 | fileloc loc = fileloc_decColumn (g_currentloc, size_toInt (cstring_length (s))); |
616915dd | 2348 | ret = sRef_undefined; |
4dd72714 | 2349 | # if 0 |
86d93ed3 | 2350 | /*drl commenting this out for now |
2351 | ct = context_getLastStruct ( ct ); | |
2352 | ||
2353 | llassert( ctype_isStruct(ct) ); | |
2354 | ||
2355 | ueL = ctype_getFields (ct); | |
2356 | ||
2357 | ue2 = uentryList_lookupField (ueL, s); | |
2358 | ||
2359 | if (!uentry_isUndefined(ue2) ) | |
2360 | { | |
2361 | ret = uentry_getSref(ue2); | |
2362 | ||
2363 | DPRINTF(( | |
2364 | message("Got field in structure in the annotation constraint: %s (or sref: %s)", s, sRef_unparse(ret) ) | |
2365 | )); | |
2366 | ||
2367 | return ret; | |
2368 | } | |
4dd72714 | 2369 | */\r |
2370 | # endif\r | |
2371 | ||
616915dd | 2372 | voptgenerror |
2373 | (FLG_UNRECOG, | |
d9a28762 | 2374 | message ("Unrecognized identifier in function clause: %s", s), |
616915dd | 2375 | loc); |
2376 | ||
2377 | fileloc_free (loc); | |
2378 | } | |
2379 | } | |
2380 | ||
2381 | return ret; | |
2382 | } | |
2383 | ||
28bf4b0b | 2384 | sRef modListArrayFetch (/*@exposed@*/ sRef s, /*@unused@*/ sRef mexp) |
616915dd | 2385 | { |
2386 | ctype ct = sRef_getType (s); | |
2387 | ctype rt = ctype_realType (ct); | |
2388 | ||
2389 | if (ctype_isAP (rt)) | |
2390 | { | |
2391 | if (context_inHeader () && ctype_isAbstract (ct)) | |
2392 | { | |
2393 | voptgenerror | |
2394 | (FLG_ABSTRACT, | |
2395 | message | |
2396 | ("Modifies clause in header file indexes abstract " | |
2397 | "type %s (interface modifies clause should not depend " | |
2398 | "on or expose type representation): %q", | |
2399 | ctype_unparse (ct), | |
2400 | sRef_unparse (s)), | |
2401 | g_currentloc); | |
2402 | } | |
2403 | ||
2404 | return (sRef_makeAnyArrayFetch (s)); | |
2405 | } | |
2406 | else | |
2407 | { | |
2408 | voptgenerror | |
2409 | (FLG_TYPE, | |
2410 | message | |
2411 | ("Implementation modifies clause uses array fetch on non-array (type %s): %q", | |
2412 | ctype_unparse (ct), sRef_unparse (s)), | |
2413 | g_currentloc); | |
2414 | return s; | |
2415 | } | |
2416 | } | |
2417 | ||
28bf4b0b | 2418 | static void clabstract_prepareFunction (uentry e) |
2419 | { | |
2420 | uentry_checkParams (e); | |
2421 | DPRINTF (("After prepare: %s", uentry_unparseFull (e))); | |
2422 | } | |
2423 | ||
2424 | sRef clabstract_checkGlobal (exprNode e) | |
2425 | { | |
2426 | sRef s; | |
2427 | llassert (exprNode_isInitializer (e)); | |
2428 | ||
2429 | s = exprNode_getSref (e); | |
2430 | DPRINTF (("Initializer: %s -> %s", exprNode_unparse (e), sRef_unparse (s))); | |
2431 | ||
2432 | exprNode_free (e); | |
2433 | return sRef_copy (s); | |
2434 | } |