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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 | ** usymtab | |
26 | ** | |
27 | ** Lexically scoped symbol table. | |
28 | ** | |
29 | ** Unlike a normal symbol table, this table splits to reflect branches. | |
30 | ** | |
31 | ** This is necessary since symbol table entries also reflect | |
32 | ** some state information, like initialization, that may be | |
33 | ** different on different branches. | |
34 | ** | |
35 | ** For each control structure we split: | |
36 | ** | |
37 | ** { } - a normal scope (no control) US_NORMAL | |
38 | ** | |
39 | ** if <pred> { } - US_TBRANCH true branch | |
40 | ** while <pred> { } US_FBRANCH else branch | |
41 | ** | |
42 | ** switch <pred> { } - US_SWITCH | |
43 | ** | |
44 | ** case x: - case scope US_CBRANCH | |
45 | ** Should be kept in a separate table, because of | |
46 | ** weird C syntax. | |
47 | */ | |
48 | ||
1b8ae690 | 49 | # include "splintMacros.nf" |
616915dd | 50 | # include "basic.h" |
51 | # include "structNames.h" | |
52 | # include "exprChecks.h" | |
28bf4b0b | 53 | # include "transferChecks.h" |
616915dd | 54 | |
3e3ec469 | 55 | /* Needed to install macros when loading libraries */ |
56 | ||
57 | # include "cpplib.h" | |
58 | # include "cpperror.h" | |
59 | # include "cpphash.h" | |
60 | ||
616915dd | 61 | /* |
62 | ** Keep track of type definitions inside a function. | |
63 | */ | |
64 | ||
65 | static uentryList functypes = uentryList_undefined; | |
66 | ||
67 | static bool dbgfree = FALSE; | |
68 | static bool dbgload = TRUE; | |
69 | ||
28bf4b0b | 70 | /*@access ekind@*/ |
616915dd | 71 | |
72 | /* | |
73 | ** Hack to prevent shadow errors from appearing when function parameters | |
74 | ** are entered into a new scope. | |
75 | */ | |
76 | ||
77 | static bool noshadowerror = FALSE; | |
78 | ||
79 | /* | |
80 | ** Constraint: static variables can live in 1 or > 2. | |
81 | ** | |
82 | ** except for tags. All tags must be at the global level. | |
83 | ** Static tags are handled in a kludgey way. | |
84 | */ | |
85 | ||
86 | /* | |
87 | ** utab is the universal symbol table | |
88 | ** globtab is the global environment of utab | |
89 | ** oldtab is needed for conversions in dumping (after sorting the table) | |
90 | ** | |
91 | ** there can be only one usymtab! | |
92 | */ | |
93 | ||
94 | static /*@checkedstrict@*/ /*@owned@*/ /*@notnull@*/ usymtab utab; | |
95 | ||
96 | /* Reachable environments from from utab */ | |
97 | static /*@checkedstrict@*/ /*@notnull@*/ /*@dependent@*/ usymtab globtab; | |
98 | static /*@checkedstrict@*/ /*@dependent@*/ usymtab filetab; | |
99 | ||
100 | /* Used for sorting for dumpage. */ | |
101 | static /*@checkedstrict@*/ /*@owned@*/ usymtab oldtab; | |
102 | ||
103 | static int usymtab_lexicalLevel (void) /*@globals utab@*/ ; | |
28bf4b0b | 104 | static bool usymtab_isAltDefinitelyNull (sRef p_s) /*@globals utab@*/ ; |
616915dd | 105 | static void refTable_free (/*@only@*/ /*@null@*/ refTable p_x, int p_nentries); |
106 | static ctype usymtab_suFieldsType (uentryList p_f, bool p_isStruct) /*@globals globtab@*/ ; | |
107 | ||
6fcd0b1e | 108 | static void usymtab_freeAux (/*@only@*/ usymtab p_u) |
109 | /*@globals globtab, utab, filetab@*/ | |
110 | /*@modifies p_u@*/ ; | |
111 | ||
28bf4b0b | 112 | extern int usymtab_getCurrentDepth (void) /*@globals utab@*/ |
113 | { | |
114 | return utab->lexlevel; | |
115 | } | |
116 | ||
616915dd | 117 | static void |
118 | usymtab_freeLevel (/*@notnull@*/ /*@only@*/ usymtab p_u) | |
119 | /*@globals globtab, utab, filetab@*/ /*@modifies p_u@*/ ; | |
120 | ||
28bf4b0b | 121 | static bool usymtab_isDefinitelyNullAux (sRef p_s) /*@globals utab@*/ ; |
616915dd | 122 | static /*@only@*/ cstring usymtab_unparseStackTab (usymtab p_t); |
123 | static /*@exposed@*/ /*@dependent@*/ uentry | |
124 | usymtab_getRefTab (/*@notnull@*/ usymtab p_u, int p_level, usymId p_index); | |
8250fa4a | 125 | |
3e3ec469 | 126 | # ifdef S_SPLINT_S |
8250fa4a | 127 | /* These are not used anymore... */ |
616915dd | 128 | static /*@unused@*/ /*@only@*/ cstring |
129 | usymtab_unparseLocalAux (/*@notnull@*/ usymtab p_s); | |
130 | static /*@unused@*/ /*@only@*/ cstring | |
131 | usymtab_unparseLocalList (/*@notnull@*/ usymtab p_s); | |
8250fa4a | 132 | # endif |
133 | ||
616915dd | 134 | static /*@only@*/ cstring usymtab_typeName (/*@notnull@*/ usymtab p_t); |
135 | static void usymtab_handleParams (void) | |
136 | /*@globals utab, globtab, filetab@*/ | |
137 | /*@modifies utab@*/ ; | |
138 | ||
139 | static /*@exposed@*/ /*@dependent@*/ uentry | |
140 | usymtab_addRefEntry (/*@notnull@*/ usymtab p_s, cstring p_k); | |
141 | static /*@exposed@*/ /*@dependent@*/ usymtab | |
142 | usymtab_dropEnv (/*@notnull@*/ usymtab p_s); | |
143 | static /*@exposed@*/ /*@dependent@*/ uentry | |
144 | usymtab_getRefNoisy (/*@notnull@*/ usymtab p_s, int p_level, usymId p_index); | |
145 | ||
28bf4b0b | 146 | static /*@exposed@*/ /*@dependent@*/ uentry |
147 | usymtab_lookupQuietAux (usymtab p_s, cstring p_k, bool p_noalt); | |
148 | ||
616915dd | 149 | static /*@exposed@*/ /*@dependent@*/ uentry |
150 | usymtab_lookupQuiet (usymtab p_s, cstring p_k); | |
28bf4b0b | 151 | |
152 | static /*@exposed@*/ /*@dependent@*/ uentry | |
153 | usymtab_lookupQuietNoAlt (usymtab p_s, cstring p_k); | |
154 | ||
80489f0a | 155 | static void usymtab_printAllAux (usymtab p_s) /*@modifies g_warningstream@*/ ; |
616915dd | 156 | static int usymtab_getIndex (/*@notnull@*/ usymtab p_s, cstring p_k); |
157 | static /*@exposed@*/ uentry usymtab_fetchIndex (/*@notnull@*/ usymtab p_s, int p_i); | |
158 | static /*@exposed@*/ uentry | |
159 | usymtab_lookupAux (usymtab p_s, cstring p_k); | |
160 | static /*@exposed@*/ /*@dependent@*/ /*@notnull@*/ usymtab | |
161 | usymtab_getFileTab (void) /*@globals filetab@*/ ; | |
162 | static int refTable_lookup (/*@notnull@*/ usymtab p_ut, int p_level, int p_index); | |
163 | static bool usymtab_mustBreak (usymtab p_s); | |
164 | static bool usymtab_mustEscape (usymtab p_s); | |
165 | ||
166 | static void recordFunctionType (uentry ue) | |
167 | { | |
7ebcc5bb | 168 | llassert (uentry_isDatatype (ue) || uentry_isAnyTag (ue) |
616915dd | 169 | || uentry_isEnumConstant (ue)); |
7ebcc5bb | 170 | DPRINTF (("Function type: %s", uentry_unparseFull (ue))); |
616915dd | 171 | /*@-temptrans@*/ |
172 | functypes = uentryList_add (functypes, ue); | |
173 | /*@=temptrans@*/ | |
174 | } | |
175 | ||
176 | static void clearFunctionTypes (void) | |
177 | /*@modifies globtab@*/ | |
178 | { | |
179 | uentryList_elements (functypes, el) | |
180 | { | |
181 | if (cstring_isDefined (uentry_rawName (el))) | |
182 | { | |
28bf4b0b | 183 | if (cstringTable_isDefined (globtab->htable)) |
616915dd | 184 | { |
28bf4b0b | 185 | cstringTable_remove (globtab->htable, uentry_rawName (el)); |
616915dd | 186 | } |
187 | ||
188 | uentry_setName (el, cstring_undefined); | |
189 | } | |
190 | ||
191 | /*@access uentry@*/ | |
192 | llassert (uentry_isValid (el)); | |
193 | el->sref = sRef_undefined; | |
194 | /*@noaccess uentry@*/ | |
195 | } end_uentryList_elements ; | |
196 | ||
197 | uentryList_clear (functypes); | |
198 | } | |
199 | ||
0e41eb0e | 200 | static /*@falsewhennull@*/ bool usymtab_isBranch (usymtab u) |
616915dd | 201 | { |
202 | return (usymtab_isDefined (u) && | |
203 | (u->kind == US_TBRANCH || u->kind == US_FBRANCH | |
204 | || u->kind == US_CBRANCH || u->kind == US_SWITCH)); | |
205 | } | |
206 | ||
207 | static bool usymtab_mustBreak (usymtab s) | |
208 | { | |
209 | llassert (s != GLOBAL_ENV); | |
210 | return (s->mustBreak); | |
211 | } | |
212 | ||
213 | static bool usymtab_mustEscape (usymtab s) | |
214 | { | |
215 | llassert (s != GLOBAL_ENV); | |
216 | return (exitkind_mustEscape (s->exitCode)); | |
217 | } | |
218 | ||
219 | void usymtab_setMustBreak () | |
220 | /*@modifies utab@*/ | |
221 | { | |
222 | llassert (utab != GLOBAL_ENV); | |
223 | utab->mustBreak = TRUE; | |
224 | } | |
225 | ||
226 | void usymtab_setExitCode (exitkind ex) | |
227 | /*@modifies utab@*/ | |
228 | { | |
229 | llassert (utab != GLOBAL_ENV); | |
230 | ||
231 | utab->exitCode = ex; | |
232 | ||
233 | if (exitkind_mustEscape (ex)) | |
234 | { | |
235 | utab->mustBreak = TRUE; | |
236 | } | |
237 | } | |
238 | ||
28bf4b0b | 239 | bool usymtab_isAltDefinitelyNullDeep (sRef s) |
616915dd | 240 | { |
28bf4b0b | 241 | return (sRef_deepPred (usymtab_isAltDefinitelyNull, s)); |
616915dd | 242 | } |
243 | ||
28bf4b0b | 244 | static bool usymtab_isAltDefinitelyNull (sRef s) |
616915dd | 245 | /*@globals utab@*/ |
246 | { | |
247 | guardSet t; | |
248 | bool res; | |
249 | ||
250 | t = utab->guards; | |
251 | ||
252 | llassert (utab->env != NULL); | |
253 | ||
254 | /*@-mods@*/ /* These modifications are cancelled. */ | |
255 | utab->guards = utab->env->guards; | |
256 | utab->env->guards = t; | |
257 | /*@=mods@*/ | |
258 | ||
259 | llassert (usymtab_isDefined (utab)); | |
28bf4b0b | 260 | res = usymtab_isDefinitelyNull (s); |
616915dd | 261 | |
262 | /* | |
263 | ** This reports a spurious error. It is okay, because of | |
264 | ** the nesting relationship of usymtab environments. | |
265 | */ | |
266 | ||
267 | /*@-mods@*/ /* Cancelling modifications. */ | |
268 | /*@i1@*/ utab->env->guards = utab->guards; | |
269 | /*@i1@*/ utab->guards = t; | |
270 | /*@=mods@*/ | |
271 | ||
272 | return res; | |
273 | } | |
274 | ||
275 | static /*@notnull@*/ /*@special@*/ usymtab | |
276 | usymtab_create (uskind kind, /*@keep@*/ usymtab env, bool nextlevel) | |
277 | /*@defines result@*/ | |
278 | /*@post:isnull result->htable, result->guards, result->aliases@*/ | |
279 | { | |
280 | usymtab t = (usymtab) dmalloc (sizeof (*t)); | |
281 | ||
282 | t->nentries = 0; | |
283 | t->nspace = CBASESIZE; | |
284 | t->entries = (uentry *) dmalloc (sizeof (*t->entries) * CBASESIZE); | |
28bf4b0b | 285 | |
286 | /* We only use a reftable for branch-level symbol tables. | |
287 | */ | |
288 | ||
616915dd | 289 | t->reftable = (nextlevel |
290 | ? NULL | |
291 | : (refentry *) dmalloc (sizeof (*t->reftable) * CBASESIZE)); | |
292 | ||
293 | t->kind = kind; | |
294 | t->lexlevel = (env == GLOBAL_ENV ? 0 : env->lexlevel) + (nextlevel ? 1 : 0); | |
28bf4b0b | 295 | |
616915dd | 296 | t->env = env; |
297 | t->htable = NULL; | |
298 | ||
299 | t->guards = guardSet_undefined; | |
300 | t->aliases = aliasTable_undefined; | |
301 | ||
28bf4b0b | 302 | t->mustBreak = FALSE; |
616915dd | 303 | t->exitCode = XK_NEVERESCAPE; |
6fcd0b1e | 304 | |
305 | DPRINTF (("Create usymtab [%p]", t)); | |
616915dd | 306 | return t; |
307 | } | |
308 | ||
309 | /* | |
310 | ** constructors | |
311 | */ | |
312 | ||
313 | static /*@only@*/ /*@notnull@*/ usymtab | |
314 | usymtab_createRoot (void) /*@modifies nothing@*/ | |
315 | { | |
316 | usymtab u = (usymtab) dmalloc (sizeof (*u)); | |
317 | ||
318 | u->nentries = 0; | |
319 | u->nspace = CGLOBBASESIZE; | |
320 | u->entries = (uentry *) dmalloc (sizeof (*u->entries) * CGLOBBASESIZE); | |
321 | u->env = GLOBAL_ENV; | |
322 | u->lexlevel = 0; | |
28bf4b0b | 323 | u->htable = cstringTable_create (CGLOBHASHSIZE); |
616915dd | 324 | u->reftable = NULL; |
28bf4b0b | 325 | |
616915dd | 326 | u->guards = guardSet_new (); |
327 | u->aliases = aliasTable_new (); | |
328 | ||
329 | u->mustBreak = FALSE; | |
330 | u->exitCode = XK_NEVERESCAPE; | |
331 | u->kind = US_NORMAL; | |
332 | ||
28bf4b0b | 333 | return (u); |
616915dd | 334 | } |
335 | ||
336 | void | |
337 | usymtab_initMod (void) | |
338 | /*@globals undef utab, undef oldtab, undef globtab, undef filetab @*/ | |
339 | /*@modifies utab, globtab, filetab, oldtab @*/ | |
340 | { | |
341 | utab = usymtab_createRoot (); | |
342 | globtab = utab; | |
343 | filetab = usymtab_undefined; | |
344 | oldtab = usymtab_undefined; | |
345 | } | |
346 | ||
6fcd0b1e | 347 | void |
348 | usymtab_destroyMod (void) /*@modifies utab, globtab, filetab@*/ /*@globals killed utab@*/ | |
349 | { | |
350 | DPRINTF (("Destroy usymtab [%p]: %d", utab, utab->nentries)); | |
351 | usymtab_freeAux (utab); | |
352 | utab = usymtab_undefined; | |
353 | } | |
28bf4b0b | 354 | |
355 | void | |
356 | usymtab_initGlobalMarker () /*@globals globtab@*/ | |
357 | { | |
358 | if (uentry_isValid (usymtab_lookupAux (globtab, GLOBAL_MARKER_NAME))) | |
359 | { | |
360 | ; /* Already entered from load table. */ | |
361 | } | |
362 | else | |
363 | { | |
364 | usymtab_addGlobalEntry (uentry_makeGlobalMarker ()); | |
365 | } | |
366 | } | |
367 | ||
616915dd | 368 | /* |
369 | ** utab should be empty? (requires?) | |
370 | ** | |
371 | ** Adds bool types to symbol table (these are built in for now) | |
372 | ** Only do this is there is no library! | |
373 | */ | |
374 | ||
375 | void | |
376 | usymtab_initBool () | |
377 | { | |
2cecdaff | 378 | DPRINTF (("Init bool!")); |
379 | ||
616915dd | 380 | if (context_getFlag (FLG_NOLIB)) |
381 | { | |
382 | ctype boolt = ctype_bool; | |
383 | /* evs 2000-07-24: bool is now treated as abstract (always) */ | |
384 | ||
385 | uentry boolentry = uentry_makeBoolDatatype (YES); | |
386 | usymtab_supGlobalEntry (boolentry); | |
387 | context_addBoolAccess (); | |
388 | ||
389 | /* | |
390 | ** We supply values 0 and 1 for the constants, so things like | |
391 | ** while (TRUE) can be interpreted correctly. | |
392 | */ | |
393 | ||
394 | usymtab_supGlobalEntry | |
5e211f69 | 395 | (uentry_makeConstantValue (context_getFalseName (), boolt, |
396 | fileloc_getBuiltin (), FALSE, | |
397 | multiVal_makeInt (0))); | |
3e3ec469 | 398 | |
616915dd | 399 | usymtab_supGlobalEntry |
5e211f69 | 400 | (uentry_makeConstantValue (context_getTrueName (), boolt, |
401 | fileloc_getBuiltin (), FALSE, | |
402 | multiVal_makeInt (1))); | |
616915dd | 403 | } |
404 | } | |
405 | ||
406 | /* | |
407 | ** mutators | |
408 | */ | |
409 | ||
410 | static void | |
411 | usymtab_grow (/*@notnull@*/ usymtab s) | |
412 | { | |
413 | int i; | |
414 | o_uentry *oldsyms = s->entries; | |
415 | ||
416 | s->nspace = CBASESIZE; | |
417 | s->entries = (uentry *) dmalloc (sizeof (*s->entries) | |
418 | * (s->nentries + s->nspace)); | |
419 | ||
420 | for (i = 0; i < s->nentries; i++) | |
421 | { | |
422 | s->entries[i] = oldsyms[i]; | |
423 | } | |
424 | ||
425 | sfree (oldsyms); | |
426 | ||
427 | if (s->reftable != NULL) | |
428 | { | |
429 | refTable oldRefs = s->reftable; | |
430 | ||
431 | s->reftable = (refentry *) dmalloc (sizeof (*s->reftable) | |
432 | * (s->nentries + CBASESIZE + 1)); | |
433 | ||
434 | for (i = 0; i < s->nentries; i++) | |
435 | { | |
436 | s->reftable[i] = oldRefs[i]; | |
437 | } | |
438 | ||
439 | /*@-compdestroy@*/ | |
440 | sfree (oldRefs); | |
441 | /*@=compdestroy@*/ | |
442 | } | |
443 | ||
444 | } | |
445 | ||
446 | static void | |
447 | usymtab_addEntryQuiet (/*@notnull@*/ usymtab s, /*@keep@*/ uentry e) | |
448 | { | |
449 | if (!(s->lexlevel > fileScope || !sRef_modInFunction ())) | |
450 | { | |
451 | if (uentry_isDatatype (e) | |
452 | || uentry_isFunction (e) | |
453 | || uentry_isAnyTag (e) | |
454 | || uentry_isEnumConstant (e) | |
455 | || context_inMacro ()) | |
456 | { | |
457 | /* | |
458 | ** Not a bug. Code like, | |
459 | ** int f (void) { typedef int tint; ... } | |
460 | ** is legal. | |
461 | */ | |
462 | ||
463 | /* was nothing here! */ | |
464 | /*@i@*/ e->sref = sRef_saveCopy (e->sref); | |
465 | } | |
466 | else | |
467 | { | |
468 | llparseerror | |
469 | (cstring_makeLiteral ("Declaration outside function scope")); | |
470 | ||
471 | llcontbug (message ("usymtab_addEntryQuiet: inconsistent state " | |
472 | "(lexlevel = %d, modFunction = %s) adding: %q", | |
473 | s->lexlevel, bool_unparse (sRef_modInFunction ()), | |
474 | uentry_unparse (e))); | |
475 | sRef_setGlobalScope (); | |
476 | /* make sure the sRef is not bashed! */ | |
477 | /*@i@*/ e->sref = sRef_saveCopy (e->sref); | |
478 | } | |
479 | } | |
480 | ||
481 | if (s->nspace <= 0) | |
482 | { | |
483 | usymtab_grow (s); | |
484 | } | |
485 | ||
486 | s->nspace--; | |
487 | s->entries[s->nentries] = e; | |
488 | ||
489 | # ifdef DOANNOTS | |
490 | if (s == globtab || s == filetab) | |
491 | { | |
492 | if (!fileloc_isLib (g_currentloc)) | |
493 | { | |
494 | uentry_tallyAnnots (e, AN_UNKNOWN); | |
495 | } | |
496 | } | |
497 | # endif | |
498 | ||
28bf4b0b | 499 | if (cstringTable_isDefined (s->htable)) |
616915dd | 500 | { |
28bf4b0b | 501 | cstringTable_insert (s->htable, cstring_copy (uentry_rawName (e)), s->nentries); |
616915dd | 502 | } |
503 | ||
504 | s->nentries++; | |
505 | } | |
506 | ||
507 | static /*@observer@*/ uentry /*@alt void@*/ | |
508 | usymtab_addEntryBase (/*@notnull@*/ usymtab s, /*@only@*/ uentry e) | |
509 | { | |
510 | /* | |
511 | ** In theory, we shouldn't need this test because it this is | |
512 | ** only called when a library is being read, and it shouldn't | |
513 | ** ever have a duplicate entry. In practice, its safer to | |
514 | ** leave it in, though. | |
515 | */ | |
516 | ||
517 | uentry old; | |
518 | ||
519 | if (uentry_isValid (old = usymtab_lookupQuiet (s, uentry_rawName (e)))) | |
520 | { | |
521 | DPRINTF (("Duplicate entry: %s", uentry_unparse (e))); | |
522 | uentry_free (e); /* duplicate */ | |
523 | return old; | |
524 | } | |
525 | else | |
526 | { | |
527 | int thisentry = s->nentries; | |
528 | ||
529 | if (uentry_isVar (e)) | |
530 | { | |
531 | uentry_setSref (e, sRef_makeCvar (globScope, thisentry, | |
6970c11b | 532 | uentry_getType (e), |
533 | stateInfo_makeLoc (uentry_whereLast (e)))); | |
616915dd | 534 | } |
535 | ||
536 | usymtab_addEntryQuiet (s, e); | |
537 | return e; | |
538 | } | |
539 | } | |
540 | ||
28bf4b0b | 541 | |
542 | static /*@observer@*/ uentry /*@alt void@*/ | |
543 | usymtab_addEntryAlways (/*@notnull@*/ usymtab s, /*@only@*/ uentry e) | |
544 | { | |
545 | /* | |
546 | ** In theory, we shouldn't need this test because it this is | |
547 | ** only called when a library is being read, and it shouldn't | |
548 | ** ever have a duplicate entry. In practice, its safer to | |
549 | ** leave it in, though. | |
550 | */ | |
551 | ||
552 | uentry old; | |
553 | int thisentry = s->nentries; | |
554 | ||
555 | if (uentry_isValid (old = usymtab_lookupQuiet (s, uentry_rawName (e)))) | |
556 | { | |
557 | llcontbug | |
558 | (message ("Duplicate entry in load library: %s. " | |
559 | "Old entry: %q. New entry: %q", | |
560 | uentry_rawName (e), | |
561 | uentry_unparseFull (old), | |
562 | uentry_unparseFull (e))); | |
563 | ||
564 | uentry_setName (e, message ("__x_%s", uentry_rawName (e))); | |
565 | /* This shouldn't happen...unless the library is bad! */ | |
566 | } | |
567 | ||
568 | ||
569 | if (uentry_isVar (e) && !uentry_isGlobalMarker (e)) | |
570 | { | |
571 | uentry_setSref (e, sRef_makeCvar (globScope, thisentry, | |
6970c11b | 572 | uentry_getType (e), |
573 | stateInfo_makeLoc (uentry_whereLast (e)))); | |
28bf4b0b | 574 | } |
575 | ||
576 | usymtab_addEntryQuiet (s, e); | |
577 | return e; | |
578 | } | |
579 | ||
616915dd | 580 | static usymId |
581 | usymtab_addEntryAux (/*@notnull@*/ usymtab st, /*@keep@*/ uentry e, bool isSref) | |
582 | /*@globals globtab@*/ | |
583 | /*@modifies st, e@*/ | |
584 | { | |
585 | usymId thisentry = st->nentries; | |
586 | ||
587 | llassert (!uentry_isElipsisMarker (e)); | |
588 | ||
589 | /* | |
590 | ** not true for tags | |
591 | ** llassert (usymtab_lookupSafe (uentry_rawName (e)) == uentry_undefined); | |
592 | **/ | |
593 | ||
594 | llassertprint (uentry_isAnyTag (e) ? st == globtab : TRUE, | |
595 | ("non-global tag: %s / %d", uentry_unparseFull (e), st->lexlevel)); | |
596 | ||
597 | if (st->lexlevel == fileScope | |
598 | && (!(uentry_isStatic (e)) || uentry_isAnyTag (e))) | |
599 | { | |
600 | st = globtab; | |
601 | } | |
602 | ||
603 | if (isSref) | |
604 | { | |
605 | ctype ct = uentry_getType (e); | |
606 | ||
607 | if (uentry_isFunction (e) && ctype_isFunction (ct)) | |
608 | { | |
28bf4b0b | 609 | ct = ctype_getReturnType (ct); |
616915dd | 610 | } |
611 | ||
612 | if (uentry_isStatic (e)) | |
613 | { | |
6970c11b | 614 | sRef sr = sRef_makeCvar (st->lexlevel, thisentry, ct, stateInfo_makeLoc (uentry_whereLast (e))); |
616915dd | 615 | |
616 | if (sRef_isStack (sr) || sRef_isLocalState (sr)) | |
617 | { | |
618 | sRef_setAliasKind (sr, AK_STATIC, uentry_whereLast (e)); | |
619 | sRef_setDefined (sr, uentry_whereLast (e)); | |
620 | } | |
621 | ||
622 | uentry_setSref (e, sr); | |
623 | } | |
624 | else | |
625 | { | |
6970c11b | 626 | uentry_setSref (e, sRef_makeCvar (st->lexlevel, thisentry, ct, stateInfo_makeLoc (uentry_whereLast (e)))); |
616915dd | 627 | } |
6970c11b | 628 | } |
616915dd | 629 | |
630 | if (uentry_isDatatype (e)) | |
631 | { | |
632 | ||
633 | uentry_setDatatype (e, thisentry); | |
634 | } | |
635 | ||
636 | if (uentry_isFunction (e)) | |
637 | { | |
638 | ctype ct = uentry_getType (e); | |
639 | ||
640 | if (ctype_isFunction (ct) | |
641 | && uentryList_isMissingParams (ctype_argsFunction (ct))) | |
642 | { | |
643 | if (uentry_isDeclared (e)) | |
644 | { | |
645 | voptgenerror | |
646 | (FLG_NOPARAMS, | |
647 | message ("Function %q declared without parameter list", | |
648 | uentry_getName (e)), | |
649 | uentry_whereDeclared (e)); | |
650 | } | |
651 | else | |
652 | { | |
653 | voptgenerror | |
654 | (FLG_NOPARAMS, | |
655 | message ("Function %q specified without parameter list", | |
656 | uentry_getName (e)), | |
657 | uentry_whereSpecified (e)); | |
658 | } | |
659 | } | |
660 | } | |
661 | ||
662 | if (st == globtab && !uentry_isSpecified (e)) | |
663 | { | |
664 | exprChecks_checkExport (e); | |
665 | } | |
666 | ||
616915dd | 667 | uentry_checkName (e); |
668 | ||
669 | usymtab_addEntryQuiet (st, e); | |
28bf4b0b | 670 | DPRINTF (("Adding entry: [%p] %s", e, uentry_unparseFull (e))); |
616915dd | 671 | return (thisentry); |
672 | } | |
673 | ||
674 | usymId | |
675 | usymtab_addEntry (uentry e) | |
676 | /*@globals utab, globtab@*/ | |
677 | /*@modifies utab, e@*/ | |
28bf4b0b | 678 | { |
616915dd | 679 | llassertprint (!usymtab_exists (uentry_rawName (e)), |
680 | ("Entry already exists: %s", uentry_unparse (e))); | |
681 | ||
682 | return usymtab_addEntryAux (utab, e, FALSE); | |
683 | } | |
684 | ||
685 | void | |
686 | usymtab_addGlobalEntry (uentry e) | |
687 | /*@modifies globtab, e@*/ | |
688 | { | |
689 | DPRINTF (("Add global: %s / %s", uentry_unparse (e), bool_unparse (uentry_isForward (e)))); | |
690 | ||
691 | (void) usymtab_addEntryAux (globtab, e, FALSE); | |
692 | } | |
693 | ||
694 | /* | |
695 | ** supercede and replace entry use elements of entries array, and | |
696 | ** assign an element to a new value, and then free the old value. | |
697 | ** Need -deparrays to avoid errors for this. | |
698 | */ | |
699 | ||
700 | /*@-deparrays@*/ | |
701 | ||
702 | static usymId | |
703 | usymtab_supEntryAux (/*@notnull@*/ usymtab st, | |
704 | /*@only@*/ uentry e, bool isSref) | |
705 | /*@globals globtab, filetab@*/ | |
706 | /*@modifies st, globtab, e@*/ | |
707 | { | |
708 | cstring ename = uentry_rawName (e); | |
709 | bool staticEntry = FALSE; | |
710 | int eindex; | |
711 | ||
28bf4b0b | 712 | DPRINTF (("Sup entry aux: %s", uentry_unparseFull (e))); |
713 | ||
616915dd | 714 | /* static tags in global scope */ |
715 | if (st->lexlevel == fileScope | |
716 | && (!(uentry_isStatic (e)) || uentry_isAnyTag (e))) | |
717 | { | |
718 | eindex = usymtab_getIndex (st, ename); | |
719 | ||
720 | if (eindex != NOT_FOUND) | |
721 | { | |
722 | uentry ce = st->entries[eindex]; | |
723 | ||
724 | if (optgenerror | |
725 | (FLG_SHADOW, | |
726 | message ("%s %q shadows static declaration", | |
727 | ekind_capName (uentry_getKind (e)), | |
728 | uentry_getName (e)), | |
729 | uentry_whereDeclared (e))) | |
730 | { | |
731 | uentry_showWhereLast (ce); | |
732 | } | |
733 | ||
734 | if (eindex == st->nentries - 1) | |
735 | { | |
736 | ; | |
737 | } | |
738 | else | |
739 | { | |
740 | st->entries[eindex] = st->entries[st->nentries - 1]; | |
741 | } | |
742 | ||
28bf4b0b | 743 | if (cstringTable_isDefined (st->htable)) |
616915dd | 744 | { |
28bf4b0b | 745 | cstringTable_replaceKey (st->htable, uentry_rawName (ce), |
746 | cstring_copy (uentry_rawName (e))); | |
616915dd | 747 | } |
748 | ||
749 | uentry_free (ce); | |
750 | st->nentries--; | |
751 | } | |
752 | ||
753 | st = globtab; | |
754 | } | |
755 | ||
756 | if (uentry_isStatic (e)) { | |
757 | if (uentry_isFunction (e)) { | |
28bf4b0b | 758 | /* |
759 | ** Static function declarations are at the file level, | |
760 | ** even if they are in a deeper scope. | |
761 | */ | |
762 | ||
616915dd | 763 | st = usymtab_getFileTab (); |
764 | staticEntry = TRUE; | |
765 | } else { | |
766 | if (!uentry_isAnyTag (e) && st == globtab) | |
767 | { | |
768 | st = usymtab_getFileTab (); | |
769 | staticEntry = TRUE; | |
770 | DPRINTF (("Static entry!")); | |
771 | } | |
772 | } | |
773 | } | |
774 | ||
616915dd | 775 | eindex = usymtab_getIndex (st, ename); |
776 | ||
777 | if (eindex != NOT_FOUND) | |
778 | { | |
779 | uentry ce = st->entries[eindex]; | |
28bf4b0b | 780 | |
616915dd | 781 | DPRINTF (("Found entry: %s", uentry_unparse (ce))); |
782 | ||
783 | if (uentry_isPriv (ce) | |
784 | /* || (fileloc_isImport (uentry_whereSpecified (ce))) */ | |
785 | || (uentry_isStatic (ce) | |
786 | && uentry_isAnyTag (ce) | |
787 | && (uentry_isDeclared (ce) | |
788 | && !fileloc_sameFile (uentry_whereDefined (ce), | |
789 | uentry_whereDefined (e))))) | |
790 | { | |
791 | /* | |
792 | ** overload entry | |
793 | ** if overloading import should do some checks! | |
794 | */ | |
795 | ||
796 | llassert ((st->lexlevel > fileScope || !sRef_modInFunction ())); | |
797 | ||
28bf4b0b | 798 | DPRINTF (("Overloading!")); |
799 | ||
616915dd | 800 | st->entries[eindex] = e; |
801 | ||
802 | if (uentry_isDatatype (e)) | |
803 | { | |
804 | uentry_setDatatype (e, eindex); | |
805 | } | |
806 | ||
807 | if (st == globtab && !uentry_isSpecified (e)) | |
808 | { | |
809 | exprChecks_checkExport (e); | |
810 | } | |
811 | ||
28bf4b0b | 812 | if (cstringTable_isDefined (st->htable)) |
616915dd | 813 | { |
28bf4b0b | 814 | cstringTable_replaceKey (st->htable, uentry_rawName (ce), |
815 | cstring_copy (uentry_rawName (e))); | |
616915dd | 816 | } |
817 | ||
818 | uentry_free (ce); | |
819 | ce = e; | |
820 | } | |
821 | else if (uentry_isSpecified (ce)) | |
822 | { | |
823 | if (uentry_isSpecified (e)) | |
824 | { | |
28bf4b0b | 825 | DPRINTF (("Here we are: %s", uentry_unparseFull (e))); |
826 | ||
616915dd | 827 | if (fileloc_isImport (uentry_whereSpecified (ce))) |
28bf4b0b | 828 | { |
829 | if (cstringTable_isDefined (st->htable)) | |
616915dd | 830 | { |
28bf4b0b | 831 | cstringTable_replaceKey (st->htable, |
832 | uentry_rawName (ce), | |
833 | cstring_copy (uentry_rawName (e))); | |
616915dd | 834 | } |
835 | ||
836 | uentry_free (ce); | |
837 | st->entries[eindex] = e; | |
838 | ce = e; | |
839 | ||
840 | if (uentry_isDatatype (e)) uentry_setDatatype (e, eindex); | |
841 | } | |
842 | else | |
843 | { | |
844 | if (fileloc_isImport (uentry_whereSpecified (e))) | |
845 | { | |
846 | uentry_free (e); | |
847 | } | |
848 | else | |
849 | { | |
28bf4b0b | 850 | /* Respecification errors already reported */ |
851 | DPRINTF (("Respecification: %s / %s", | |
852 | fileloc_unparse (uentry_whereSpecified (e)), | |
853 | bool_unparse (fileloc_isSpec (uentry_whereSpecified (e))))); | |
854 | ||
616915dd | 855 | if (uentry_isDatatype (e)) |
856 | { | |
857 | uentry_setDatatype (e, eindex); | |
858 | } | |
859 | ||
28bf4b0b | 860 | if (cstringTable_isDefined (st->htable)) |
616915dd | 861 | { |
28bf4b0b | 862 | cstringTable_replaceKey (st->htable, |
863 | uentry_rawName (ce), | |
864 | cstring_copy (uentry_rawName (e))); | |
616915dd | 865 | } |
866 | ||
867 | llassert ((st->lexlevel > fileScope || !sRef_modInFunction ())); | |
868 | uentry_free (ce); | |
869 | st->entries[eindex] = e; | |
870 | ce = e; | |
871 | } | |
872 | } | |
873 | } | |
874 | else /* e not specified */ | |
875 | { | |
28bf4b0b | 876 | DPRINTF (("Merging...")); |
877 | ||
616915dd | 878 | if (uentry_isDeclared (ce)) |
879 | { | |
1d239d69 | 880 | /* evans 2001-08-26 |
881 | No - this can happen for internal typedefs | |
882 | llassert ((st->lexlevel > fileScope || !sRef_modInFunction ())); | |
883 | */ | |
884 | ||
28bf4b0b | 885 | DPRINTF (("Merge defn")); |
616915dd | 886 | uentry_mergeDefinition (ce, e); |
887 | } | |
888 | else | |
889 | { | |
1d239d69 | 890 | /* evans 2001-08-26 |
891 | No - this can happen for internal typedefs | |
892 | llassert ((st->lexlevel > fileScope || !sRef_modInFunction ())); | |
893 | */ | |
894 | ||
28bf4b0b | 895 | DPRINTF (("Merge entries...")); |
616915dd | 896 | uentry_mergeEntries (ce, e); |
28bf4b0b | 897 | DPRINTF (("After: %s", uentry_unparseFull (ce))); |
616915dd | 898 | } |
899 | } | |
900 | } | |
901 | else /* ce not specified */ | |
902 | { | |
903 | if (!(st->lexlevel > fileScope || !sRef_modInFunction ())) | |
904 | { | |
905 | if (uentry_isDatatype (e) || uentry_isAnyTag (e) | |
140c27a8 | 906 | || uentry_isEnumConstant (e) |
907 | || uentry_isStatic (e)) /* bug fix from Brian St. Pierre */ | |
616915dd | 908 | { |
909 | ; /* | |
910 | ** Not a bug. Code like, | |
911 | ** int f (void) { typedef int tint; ... } | |
912 | ** is legal. | |
913 | */ | |
914 | } | |
915 | else | |
916 | { | |
917 | llcontbug (message ("usymtab_supEntryAux: inconsistent state " | |
918 | "(lexlevel = %d, modFunction = %s) adding: %q", | |
919 | st->lexlevel, bool_unparse (sRef_modInFunction ()), | |
920 | uentry_unparse (e))); | |
921 | ||
922 | if (sRef_modInFunction ()) | |
923 | { | |
924 | /* make sure the sRef is not bashed! */ | |
925 | /*@i@*/ e->sref = sRef_saveCopy (e->sref); | |
926 | } | |
927 | } | |
928 | } | |
929 | ||
28bf4b0b | 930 | DPRINTF (("Merge..")); |
616915dd | 931 | uentry_mergeDefinition (ce, e); |
932 | } | |
933 | ||
934 | if (isSref) | |
935 | { | |
936 | ctype ct = uentry_getType (ce); | |
937 | ||
938 | if (uentry_isFunction (ce) && ctype_isFunction (ct)) | |
939 | { | |
28bf4b0b | 940 | ct = ctype_getReturnType (ct); |
616915dd | 941 | } |
942 | ||
6970c11b | 943 | uentry_setSref (ce, sRef_makeCvar (st->lexlevel, eindex, ct, stateInfo_makeLoc (uentry_whereLast (ce)))); |
944 | } | |
616915dd | 945 | } |
946 | else /* no previous entry */ | |
947 | { | |
948 | uentry outer; | |
949 | ||
950 | if (st->lexlevel == globScope | |
951 | && !uentry_isStatic (e) | |
952 | && !uentry_isExtern (e) | |
953 | && usymtab_isDefined (filetab)) | |
954 | { | |
955 | /* | |
956 | ** check if there is a static entry: (i.e., | |
957 | ** | |
958 | ** static int f (); | |
959 | ** ... | |
960 | ** int f (); | |
961 | */ | |
962 | ||
963 | eindex = usymtab_getIndex (filetab, ename); | |
964 | ||
965 | if (eindex != NOT_FOUND) | |
966 | { | |
967 | uentry ce = filetab->entries[eindex]; | |
968 | ||
969 | uentry_setStatic (e); | |
970 | uentry_mergeDefinition (ce, e); | |
971 | staticEntry = TRUE; | |
972 | goto exitPoint; | |
973 | } | |
974 | } | |
975 | ||
976 | outer = usymtab_lookupQuiet (st->env, ename); | |
977 | ||
7ebcc5bb | 978 | DPRINTF (("New : [%p] %s", e, uentry_unparseFull (e))); |
979 | DPRINTF (("Outer: [%p] %s", outer, uentry_unparseFull (outer))); | |
980 | ||
616915dd | 981 | /* |
982 | ** no previous definition, add the new one | |
983 | */ | |
984 | ||
985 | if (!noshadowerror | |
986 | && uentry_isValid (outer) | |
987 | && !(uentry_isYield (e) || uentry_isYield (outer)) | |
988 | && fileloc_isDefined (uentry_whereLast (e)) | |
ccf0a4a8 | 989 | && !fileloc_isXHFile (uentry_whereLast (e)) |
990 | && fileloc_isDefined (uentry_whereLast (outer)) | |
991 | && !fileloc_isXHFile (uentry_whereLast (outer))) | |
616915dd | 992 | { |
993 | if (!uentry_sameKind (outer, e)) | |
994 | { | |
995 | ; /* no error */ | |
996 | } | |
997 | else | |
998 | { | |
999 | if (ctype_isUnknown (uentry_getType (outer)) | |
1000 | || uentry_isForward (outer)) | |
1001 | { | |
1002 | ; | |
1003 | } | |
1004 | else | |
1005 | { | |
1006 | if (optgenerror | |
1007 | (FLG_SHADOW, | |
1008 | message ("%s %q shadows outer declaration", | |
1009 | ekind_capName (uentry_getKind (e)), | |
1010 | uentry_getName (e)), | |
1011 | uentry_whereLast (e))) | |
1012 | { | |
1013 | uentry_showWhereLast (outer); | |
1014 | } | |
1015 | } | |
1016 | } | |
1017 | } | |
1018 | ||
1019 | if (st == globtab && context_getFlag (FLG_NEWDECL)) | |
1020 | { | |
1021 | voptgenerror | |
1022 | (FLG_NEWDECL, | |
1023 | message ("New declaration: %q", uentry_getName (e)), | |
1024 | uentry_whereLast (e)); | |
1025 | } | |
1026 | ||
1027 | eindex = usymtab_addEntryAux (st, e, isSref); | |
1028 | } | |
1029 | ||
1030 | exitPoint: | |
1031 | return (staticEntry ? USYMIDINVALID : eindex); | |
1032 | } | |
1033 | ||
616915dd | 1034 | static void |
1035 | usymtab_replaceEntryAux (/*@notnull@*/ usymtab st, /*@only@*/ uentry e) | |
1036 | /*@globals globtab@*/ /*@modifies st, e@*/ | |
1037 | { | |
1038 | cstring ename = uentry_rawName (e); | |
1039 | int eindex; | |
1040 | ||
1041 | /* static tags in global scope */ | |
1042 | eindex = usymtab_getIndex (st, ename); | |
1043 | ||
1044 | if (eindex != NOT_FOUND) | |
1045 | { | |
1046 | uentry ce = st->entries[eindex]; | |
1047 | ||
28bf4b0b | 1048 | if (cstringTable_isDefined (st->htable)) |
616915dd | 1049 | { |
28bf4b0b | 1050 | cstringTable_replaceKey (st->htable, uentry_rawName (ce), |
1051 | cstring_copy (uentry_rawName (e))); | |
616915dd | 1052 | } |
1053 | ||
1054 | uentry_free (ce); | |
1055 | st->entries[eindex] = e; | |
1056 | } | |
1057 | else | |
1058 | { | |
1059 | eindex = usymtab_addEntryAux (st, e, FALSE); | |
1060 | } | |
1061 | } | |
616915dd | 1062 | |
1063 | /*@=deparrays@*/ | |
1064 | ||
1065 | void usymtab_supEntry (uentry e) | |
1066 | /*@globals utab, filetab, globtab@*/ | |
1067 | /*@modifies utab, globtab, e@*/ | |
1068 | { | |
1069 | (void) usymtab_supEntryAux (utab, e, FALSE); | |
1070 | } | |
1071 | ||
1072 | /* | |
1073 | ** this should be lots more efficient! | |
1074 | */ | |
1075 | ||
1076 | static /*@exposed@*/ uentry | |
1077 | usymtab_supEntryReturnAux (/*@notnull@*/ usymtab tab, | |
1078 | /*@only@*/ uentry e, bool isref) | |
1079 | /*@globals globtab, filetab@*/ | |
1080 | /*@modifies tab, globtab, e@*/ | |
1081 | { | |
1082 | cstring rawName = cstring_copy (uentry_rawName (e)); | |
1083 | bool stat = (tab == globtab) && uentry_isStatic (e); | |
1084 | uentry ret; | |
1085 | ||
616915dd | 1086 | (void) usymtab_supEntryAux (tab, e, isref); |
1087 | ||
1088 | if (stat) | |
1089 | { | |
1090 | ret = usymtab_lookupAux (filetab, rawName); | |
1091 | } | |
1092 | else | |
1093 | { | |
1094 | ret = usymtab_lookupAux (tab, rawName); | |
1095 | ||
1096 | if (uentry_isInvalid (ret) && usymtab_isDefined (filetab)) | |
1097 | { | |
1098 | ret = usymtab_lookupAux (filetab, rawName); | |
1099 | } | |
1100 | } | |
1101 | ||
1102 | cstring_free (rawName); | |
1103 | return ret; | |
1104 | } | |
1105 | ||
1106 | /*@dependent@*/ /*@exposed@*/ uentry | |
1107 | usymtab_supEntryReturn (/*@only@*/ uentry e) | |
1108 | /*@globals utab, filetab, globtab@*/ | |
1109 | /*@modifies utab, globtab, e@*/ | |
1110 | { | |
1111 | return (usymtab_supEntryReturnAux (utab, e, FALSE)); | |
1112 | } | |
1113 | ||
1114 | /*@dependent@*/ /*@exposed@*/ uentry | |
1115 | usymtab_supEntrySrefReturn (/*@only@*/ uentry e) | |
1116 | /*@globals utab, globtab, filetab@*/ | |
1117 | /*@modifies utab, globtab, e@*/ | |
1118 | { | |
1119 | return (usymtab_supEntryReturnAux (utab, e, TRUE)); | |
1120 | } | |
1121 | ||
1122 | /*@dependent@*/ /*@exposed@*/ uentry | |
1123 | usymtab_supGlobalEntryReturn (uentry e) | |
1124 | /*@globals globtab, filetab@*/ | |
1125 | /*@modifies globtab, e@*/ | |
1126 | { | |
1127 | uentry ret; | |
1128 | ||
1129 | ret = usymtab_supEntryReturnAux (globtab, e, FALSE); | |
1130 | ||
7ebcc5bb | 1131 | /* |
1132 | ** We need to keep track of internal function declarations, so | |
1133 | ** we can remove them from the symbol table after exiting this | |
1134 | ** function. This is a bit bogus, of course. | |
1135 | */ | |
1136 | ||
616915dd | 1137 | if (sRef_modInFunction ()) |
1138 | { | |
1139 | recordFunctionType (ret); | |
1140 | } | |
1141 | ||
1142 | return (ret); | |
1143 | } | |
1144 | ||
1145 | ctype | |
1146 | usymtab_supTypeEntry (/*@only@*/ uentry e) | |
1147 | /*@globals globtab, filetab@*/ | |
1148 | /*@modifies globtab, e@*/ | |
1149 | { | |
1150 | usymId uid; | |
1151 | ctype ret; | |
1152 | ||
1153 | if (uentry_isAbstractDatatype (e)) | |
1154 | { | |
1155 | uid = usymtab_supAbstractTypeEntry (e, FALSE); | |
1156 | ret = ctype_createAbstract (uid); | |
1157 | } | |
1158 | else | |
1159 | { | |
1160 | uid = usymtab_supEntryAux (globtab, e, FALSE); | |
1161 | ret = ctype_createUser (uid); | |
1162 | } | |
1163 | ||
1164 | if (sRef_modInFunction ()) | |
1165 | { | |
1166 | recordFunctionType (globtab->entries[uid]); | |
1167 | } | |
1168 | ||
1169 | return ret; | |
1170 | } | |
1171 | ||
1172 | uentry | |
1173 | usymtab_supReturnTypeEntry (/*@only@*/ uentry e) | |
1174 | /*@globals globtab, filetab@*/ | |
1175 | /*@modifies globtab@*/ | |
1176 | { | |
1177 | usymId uid; | |
28bf4b0b | 1178 | |
1179 | DPRINTF (("Abstract? %s", uentry_unparseFull (e))); | |
1180 | ||
616915dd | 1181 | if (uentry_isAbstractDatatype (e)) |
1182 | { | |
1183 | uid = usymtab_supAbstractTypeEntry (e, FALSE); | |
1184 | } | |
28bf4b0b | 1185 | else if (uentry_isMaybeAbstract (e) && context_getFlag (FLG_IMPABSTRACT)) |
1186 | { | |
1187 | bool maybeabs = TRUE; | |
1188 | cstring sname = uentry_getName (e); | |
1189 | uentry ue = usymtab_lookupGlobSafe (sname); | |
1190 | cstring_free (sname); | |
1191 | ||
1192 | if (uentry_isValid (ue)) | |
1193 | { | |
1194 | DPRINTF (("Lookup: %s", uentry_unparseFull (ue))); | |
1195 | ||
1196 | if (uentry_isDatatype (ue)) | |
1197 | { | |
1198 | if (uentry_isMaybeAbstract (ue)) | |
1199 | { | |
1200 | ; | |
1201 | } | |
1202 | else | |
1203 | { | |
1204 | maybeabs = FALSE; | |
1205 | } | |
1206 | } | |
1207 | else | |
1208 | { | |
1209 | DPRINTF (("Not datatype!")); | |
1210 | } | |
1211 | } | |
1212 | ||
1213 | if (maybeabs) | |
1214 | { | |
1215 | uentry ux; | |
1216 | uid = usymtab_supAbstractTypeEntry (e, FALSE); | |
1217 | ux = usymtab_getTypeEntry (uid); | |
1218 | uentry_setAbstract (ux); | |
1219 | } | |
1220 | else | |
1221 | { | |
1222 | uid = usymtab_supEntryAux (globtab, e, FALSE); | |
1223 | e = usymtab_getTypeEntry (uid); | |
1224 | ||
1225 | if (uentry_isMaybeAbstract (e)) | |
1226 | { | |
1227 | uentry_setConcrete (e); | |
1228 | } | |
1229 | } | |
1230 | } | |
616915dd | 1231 | else |
1232 | { | |
1233 | uid = usymtab_supEntryAux (globtab, e, FALSE); | |
28bf4b0b | 1234 | e = usymtab_getTypeEntry (uid); |
1235 | ||
1236 | if (uentry_isMaybeAbstract (e)) | |
1237 | { | |
1238 | uentry_setConcrete (e); | |
1239 | } | |
616915dd | 1240 | } |
1241 | ||
1242 | if (sRef_modInFunction ()) | |
1243 | { | |
1244 | recordFunctionType (globtab->entries[uid]); | |
1245 | } | |
1246 | ||
1247 | return (globtab->entries[uid]); | |
1248 | } | |
1249 | ||
1250 | usymId | |
1251 | usymtab_supAbstractTypeEntry (/*@only@*/ uentry e, bool dodef) | |
1252 | /*@globals globtab, filetab@*/ | |
1253 | /*@modifies globtab, e@*/ | |
1254 | { | |
1255 | usymId uid; | |
28bf4b0b | 1256 | uentry ue; |
1257 | ||
616915dd | 1258 | uid = usymtab_supEntryAux (globtab, e, FALSE); |
28bf4b0b | 1259 | ue = usymtab_getTypeEntry (uid); |
616915dd | 1260 | |
1261 | if (dodef) | |
1262 | { | |
616915dd | 1263 | uentry_setDatatype (ue, uid); |
1264 | } | |
1265 | ||
28bf4b0b | 1266 | if (context_getFlag (FLG_ACCESSMODULE)) /* was accessfile */ |
616915dd | 1267 | { |
1268 | context_addFileAccessType (uid); | |
1269 | } | |
1270 | ||
1271 | if (sRef_modInFunction ()) | |
1272 | { | |
1273 | recordFunctionType (globtab->entries[uid]); | |
1274 | } | |
1275 | ||
1276 | return (uid); | |
1277 | } | |
1278 | ||
616915dd | 1279 | usymId |
1280 | usymtab_supExposedTypeEntry (/*@only@*/ uentry e, bool dodef) | |
1281 | /*@globals globtab, filetab@*/ | |
1282 | /*@modifies globtab, e@*/ | |
1283 | { | |
1284 | usymId uid; | |
1285 | ||
1286 | uid = usymtab_supEntryAux (globtab, e, FALSE); | |
1287 | ||
1288 | if (dodef) | |
1289 | { | |
1290 | uentry ue = usymtab_getTypeEntry (uid); | |
1291 | ||
1292 | uentry_setDatatype (ue, uid); | |
1293 | } | |
1294 | ||
1295 | if (sRef_modInFunction ()) | |
1296 | { | |
1297 | recordFunctionType (globtab->entries[uid]); | |
1298 | } | |
1299 | ||
1300 | return (uid); | |
1301 | } | |
616915dd | 1302 | |
1303 | ctype | |
1304 | usymtab_supForwardTypeEntry (/*@only@*/ uentry e) | |
1305 | /*@globals globtab, filetab@*/ | |
1306 | /*@modifies globtab, e@*/ | |
1307 | { | |
1308 | usymId uid = usymtab_supEntryAux (globtab, e, FALSE); | |
1309 | uentry ue = usymtab_getTypeEntry (uid); | |
1310 | ||
1311 | uentry_setDatatype (ue, uid); | |
1312 | ||
1313 | if (sRef_modInFunction ()) | |
1314 | { | |
1315 | recordFunctionType (globtab->entries[uid]); | |
1316 | } | |
1317 | ||
1318 | return (uentry_getAbstractType (ue)); | |
1319 | } | |
1320 | ||
1321 | void | |
1322 | usymtab_supEntrySref (uentry e) | |
1323 | /*@globals utab, globtab, filetab@*/ | |
1324 | /*@modifies utab, globtab, e@*/ | |
1325 | { | |
1326 | sRef old = uentry_getSref (e); | |
616915dd | 1327 | |
1328 | if (sRef_isType (old)) | |
1329 | { | |
1330 | uentry ue = usymtab_supEntryReturnAux (utab, e, TRUE); | |
1331 | ||
1332 | /*@access uentry@*/ | |
1333 | if (uentry_isValid (ue)) | |
1334 | { | |
1335 | sRef uref = uentry_getSref (ue); | |
1336 | ||
1337 | sRef_mergeStateQuiet (uref, old); | |
1338 | sRef_clearDerived (uref); | |
1339 | } | |
1340 | /*@noaccess uentry@*/ | |
1341 | } | |
1342 | else if (sRef_isKnown (old)) | |
1343 | { | |
1344 | usymtab_supEntry (e); | |
1345 | } | |
1346 | else | |
1347 | { | |
1348 | (void) usymtab_supEntryAux (utab, e, TRUE); | |
1349 | } | |
1350 | } | |
1351 | ||
1352 | void usymtab_supGlobalEntry (/*@only@*/ uentry e) | |
1353 | /*@globals globtab, filetab@*/ | |
1354 | /*@modifies globtab, filetab, e@*/ | |
1355 | { | |
1356 | usymId uid; | |
1357 | ||
1358 | DPRINTF (("Sup global entry: %s", uentry_unparse (e))); | |
1359 | ||
1360 | uid = usymtab_supEntryAux (globtab, e, FALSE); | |
1361 | ||
1362 | if (sRef_modInFunction ()) | |
1363 | { | |
1364 | recordFunctionType (globtab->entries[uid]); | |
1365 | } | |
1366 | } | |
1367 | ||
1368 | uentry | |
1369 | usymtab_supReturnFileEntry (/*@only@*/ uentry e) | |
1370 | /*@globals filetab, globtab@*/ | |
1371 | /*@modifies filetab, globtab, e@*/ | |
1372 | { | |
1373 | llassert (filetab != usymtab_undefined); | |
1374 | DPRINTF (("File entry: %s", uentry_unparse (e))); | |
1375 | return (usymtab_supEntryReturnAux (filetab, e, FALSE)); | |
1376 | } | |
1377 | ||
1378 | /* | |
1379 | ** observers | |
1380 | */ | |
1381 | ||
1382 | bool | |
1383 | usymtab_inDeepScope () /*@globals utab@*/ | |
1384 | { | |
1385 | return (utab->lexlevel > paramsScope); | |
1386 | } | |
1387 | ||
1388 | static int | |
1389 | usymtab_getIndex (/*@notnull@*/ usymtab s, cstring k) | |
1390 | { | |
1391 | int i; | |
1392 | ||
28bf4b0b | 1393 | DPRINTF (("Lookup %s", k)); |
616915dd | 1394 | |
28bf4b0b | 1395 | if (cstringTable_isDefined (s->htable)) |
1396 | { | |
1397 | i = cstringTable_lookup (s->htable, k); | |
616915dd | 1398 | return i; |
1399 | } | |
1400 | else | |
1401 | { | |
1402 | for (i = 0; i < s->nentries; i++) | |
1403 | { | |
1404 | uentry current = s->entries[i]; | |
1405 | ||
28bf4b0b | 1406 | DPRINTF (("Check %d: %s", i, uentry_rawName (current))); |
1407 | ||
616915dd | 1408 | if (!uentry_isUndefined (current) |
1409 | && cstring_equal (uentry_rawName (current), k)) | |
1410 | { | |
1411 | return i; | |
1412 | } | |
1413 | } | |
1414 | ||
1415 | return NOT_FOUND; | |
1416 | } | |
1417 | } | |
1418 | ||
1419 | static uentry | |
1420 | usymtab_fetchIndex (/*@notnull@*/ usymtab s, int i) | |
1421 | { | |
1422 | llassert (i >= 0 && i < s->nentries); | |
1423 | return (s->entries[i]); | |
1424 | } | |
1425 | ||
1426 | usymId | |
1427 | usymtab_getTypeId (cstring k) /*@globals globtab@*/ | |
1428 | { | |
1429 | usymId uid = usymtab_getIndex (globtab, k); | |
1430 | ||
1431 | if (uid == NOT_FOUND) return USYMIDINVALID; | |
1432 | ||
1433 | if (!(uentry_isDatatype (usymtab_getTypeEntry (uid)))) { | |
1434 | return USYMIDINVALID; | |
1435 | } | |
1436 | ||
1437 | return uid; | |
1438 | } | |
1439 | ||
1440 | /*@dependent@*/ uentry | |
1441 | usymtab_lookupStructTag (cstring k) | |
1442 | { | |
1443 | cstring sname = makeStruct (k); | |
1444 | uentry ue = usymtab_lookupGlob (sname); | |
28bf4b0b | 1445 | |
1446 | cstring_free (sname); | |
616915dd | 1447 | return (ue); |
1448 | } | |
1449 | ||
1450 | /*@dependent@*/ uentry | |
1451 | usymtab_lookupUnionTag (cstring k) | |
1452 | { | |
1453 | cstring uname = makeUnion (k); | |
1454 | uentry res = usymtab_lookupGlob (uname); | |
1455 | ||
1456 | cstring_free (uname); | |
1457 | return res; | |
1458 | } | |
1459 | ||
1460 | /*@dependent@*/ uentry | |
1461 | usymtab_lookupEnumTag (cstring k) | |
1462 | { | |
1463 | cstring ename = makeEnum (k); | |
1464 | uentry res = usymtab_lookupGlob (ename); | |
1465 | ||
1466 | cstring_free (ename); | |
1467 | return res; | |
1468 | } | |
1469 | ||
1470 | usymId | |
1471 | usymtab_getId (cstring k) /*@globals globtab@*/ | |
1472 | { | |
1473 | usymId uid = usymtab_getIndex (globtab, k); | |
1474 | uentry ue; | |
1475 | ||
1476 | if (uid == NOT_FOUND) | |
1477 | { | |
1478 | return USYMIDINVALID; | |
1479 | } | |
1480 | ||
1481 | ue = usymtab_getGlobalEntry (uid); | |
1482 | ||
1483 | if (uentry_isPriv (ue)) | |
1484 | { | |
1485 | return USYMIDINVALID; | |
1486 | } | |
1487 | ||
1488 | return uid; | |
1489 | } | |
1490 | ||
1491 | static /*@exposed@*/ uentry | |
1492 | usymtab_getEntryAux (/*@notnull@*/ usymtab s, usymId uid) | |
1493 | { | |
1494 | llassert (uid != USYMIDINVALID); | |
1495 | ||
1496 | if (uid < 0 || uid >= s->nentries) | |
1497 | { | |
1498 | llcontbug (message ("usymtab_getEntry: out of range: level = %d [%d]", | |
1499 | s->lexlevel, uid)); | |
1500 | return uentry_undefined; | |
1501 | } | |
1502 | ||
1503 | llassertprint (uentry_isValid (s->entries[uid]), | |
1504 | ("entry undefined: %d", uid)); | |
1505 | ||
1506 | return s->entries[uid]; | |
1507 | } | |
1508 | ||
1509 | /*@dependent@*/ /*@observer@*/ uentry | |
1510 | usymtab_getGlobalEntry (usymId uid) | |
1511 | /*@globals utab, globtab@*/ | |
1512 | { | |
1513 | if (dbgfree) return (uentry_undefined); | |
1514 | ||
1515 | if (utab->lexlevel > paramsScope) | |
1516 | { | |
1517 | /* need to do this the awkward way, since it could be in conditional scope */ | |
1518 | return (usymtab_lookupSafe (uentry_rawName (globtab->entries[uid]))); | |
1519 | } | |
1520 | else | |
1521 | { | |
1522 | return (globtab->entries[uid]); | |
1523 | } | |
1524 | } | |
1525 | ||
1526 | /*@dependent@*/ /*@exposed@*/ uentry | |
1527 | usymtab_getTypeEntry (usymId uid) | |
1528 | /*@globals globtab@*/ | |
1529 | { | |
1530 | if (dbgload) | |
1531 | { | |
1532 | if (uid >= 0 && uid < globtab->nentries) | |
1533 | { | |
1534 | return (globtab->entries[uid]); | |
1535 | } | |
1536 | else | |
1537 | { | |
1538 | return (uentry_undefined); | |
1539 | } | |
1540 | } | |
1541 | else | |
1542 | { | |
28bf4b0b | 1543 | llassert (uid >= 0 && uid < globtab->nentries); |
616915dd | 1544 | return (globtab->entries[uid]); |
1545 | } | |
1546 | } | |
1547 | ||
1548 | /* | |
1549 | ** in load files | |
1550 | */ | |
1551 | ||
1552 | /*@dependent@*/ /*@exposed@*/ uentry | |
1553 | usymtab_getTypeEntrySafe (usymId uid) | |
1554 | /*@globals globtab@*/ | |
1555 | { | |
1556 | if (uid < 0 || uid >= globtab->nentries) | |
1557 | { | |
1558 | return uentry_undefined; | |
1559 | } | |
1560 | ||
1561 | return (globtab->entries[uid]); | |
1562 | } | |
1563 | ||
1564 | bool | |
1565 | usymtab_isBoolType (usymId uid) | |
1566 | /*@globals globtab@*/ | |
1567 | { | |
1568 | llassert (uid >= 0 && uid < globtab->nentries); | |
1569 | ||
1570 | return (cstring_equal (uentry_rawName (globtab->entries[uid]), | |
1571 | context_getBoolName ())); | |
1572 | } | |
1573 | ||
1574 | cstring | |
1575 | usymtab_getTypeEntryName (usymId uid) | |
1576 | /*@globals globtab@*/ | |
1577 | { | |
1578 | uentry ue; | |
1579 | ||
1580 | if (dbgfree) | |
1581 | { | |
1582 | return (cstring_makeLiteral ("<freetype>")); | |
1583 | } | |
1584 | ||
1585 | ue = usymtab_getTypeEntry (uid); | |
1586 | ||
1587 | if (dbgload && !uentry_isValid (ue)) | |
1588 | { | |
1589 | return (message ("<missing type: %d>", uid)); | |
1590 | } | |
1591 | ||
1592 | llassertprint (uentry_isValid (ue), ("type undefined: %d", uid)); | |
1593 | ||
1594 | return (uentry_getName (ue)); | |
1595 | } | |
1596 | ||
8250fa4a | 1597 | # if 0 |
28bf4b0b | 1598 | /*@unused@*/ static void |
616915dd | 1599 | usymtab_rehash (/*@notnull@*/ usymtab s) |
1600 | { | |
1601 | int i; | |
1602 | ||
28bf4b0b | 1603 | if (cstringTable_isDefined (s->htable)) |
616915dd | 1604 | { |
28bf4b0b | 1605 | cstringTable_free (s->htable); |
616915dd | 1606 | } |
1607 | ||
d5047b91 | 1608 | s->htable = cstringTable_create (LLAHSHSIZE); |
616915dd | 1609 | |
1610 | for (i = 0; i < s->nentries; i++) | |
1611 | { | |
28bf4b0b | 1612 | cstringTable_insert (s->htable, cstring_copy (uentry_rawName (s->entries[i])), i); |
616915dd | 1613 | } |
1614 | } | |
8250fa4a | 1615 | # endif |
616915dd | 1616 | |
1617 | /* | |
1618 | ** superficial copy of usymtab | |
1619 | ** | |
1620 | ** DO copy spec entries | |
1621 | */ | |
1622 | ||
1623 | static /*@only@*/ /*@notnull@*/ usymtab | |
1624 | usymtab_shallowCopy (/*@notnull@*/ usymtab s) /*@*/ | |
1625 | { | |
1626 | usymtab copytab = usymtab_createRoot (); | |
1627 | int i; | |
1628 | ||
1629 | for (i = 0; i < s->nentries; i++) | |
1630 | { | |
1631 | usymtab_addEntryBase (copytab, s->entries[i]); | |
1632 | } | |
1633 | ||
1634 | return copytab; | |
1635 | } | |
1636 | ||
1637 | static void | |
1638 | usymtab_shallowFree (/*@only@*/ /*@notnull@*/ usymtab s) | |
1639 | { | |
1640 | aliasTable_free (s->aliases); | |
1641 | refTable_free (s->reftable, s->nentries); | |
1642 | sfree (s->entries); | |
1643 | /*@-compdestroy@*/ sfree (s); /*@=compdestroy@*/ | |
1644 | } | |
1645 | ||
1646 | /* | |
1647 | ** converts usymId from old table to sorted one | |
1648 | */ | |
1649 | ||
1650 | usymId | |
1651 | usymtab_convertId (usymId uid) | |
1652 | /*@globals oldtab, utab@*/ | |
1653 | { | |
1654 | uentry ue; | |
1655 | usymId ret; | |
1656 | cstring name; | |
1657 | ||
1658 | llassert (usymtab_isDefined (oldtab)); | |
1659 | ||
1660 | ue = usymtab_getEntryAux (oldtab, uid); | |
1661 | ||
1662 | llassertprint (uentry_isValid (ue), ("convertId: undefined: %d", uid)); | |
1663 | ||
1664 | name = uentry_rawName (ue); | |
1665 | ||
1666 | ret = usymtab_getIndex (utab, name); | |
28bf4b0b | 1667 | llassert (ret == uid); /*! for now, no rehash! */ |
1668 | DPRINTF (("Convert: %s [%d] -> %s [%d]", | |
1669 | uentry_unparse (ue), uid, | |
1670 | uentry_unparse (utab->entries[ret]), ret)); | |
616915dd | 1671 | |
1672 | llassertprint (ret != USYMIDINVALID, ("convertId: return is invalid")); | |
1673 | ||
1674 | return (ret); | |
1675 | } | |
1676 | ||
1677 | void | |
1678 | usymtab_prepareDump (void) | |
1679 | /*@globals oldtab, utab@*/ | |
1680 | /*@modifies oldtab, utab@*/ | |
1681 | { | |
1682 | llassert (usymtab_inGlobalScope ()); | |
616915dd | 1683 | llassert (oldtab == usymtab_undefined); |
1684 | ||
28bf4b0b | 1685 | /* |
1686 | DPRINTF (("Preparing to dump:")); | |
1687 | usymtab_printAll (); | |
1688 | */ | |
1689 | ||
616915dd | 1690 | oldtab = usymtab_shallowCopy (utab); |
1691 | ||
1692 | /* | |
28bf4b0b | 1693 | ** alpha compare - make sure order is same on different platforms |
1694 | ** error messages appear in same order | |
616915dd | 1695 | */ |
1696 | ||
28bf4b0b | 1697 | /* |
616915dd | 1698 | qsort (utab->entries, (size_t)utab->nentries, |
28bf4b0b | 1699 | sizeof (*utab->entries), |
1700 | (int (*)(const void *, const void *)) uentry_xcomparealpha); | |
1701 | ||
616915dd | 1702 | usymtab_rehash (utab); |
28bf4b0b | 1703 | */ |
1704 | ||
1705 | /* | |
1706 | DPRINTF (("After rehash:")); | |
1707 | usymtab_printAll (); | |
1708 | */ | |
616915dd | 1709 | } |
1710 | ||
28bf4b0b | 1711 | void usymtab_dump (FILE *fout) |
1712 | /*@globals utab, oldtab@*/ | |
616915dd | 1713 | { |
1714 | int i; | |
1715 | bool neednl = FALSE; | |
1716 | uentry lastentry = uentry_undefined; | |
1717 | ekind lastekind = KINVALID; | |
1718 | int linelen = 0; | |
1719 | ||
1720 | /* | |
1721 | ** must call prepareDump first | |
1722 | */ | |
1723 | ||
1724 | llassert (oldtab != usymtab_undefined); | |
1725 | ||
1726 | for (i = 0; i < utab->nentries; i++) | |
1727 | { | |
1728 | uentry thisentry = utab->entries[i]; | |
1729 | ekind thisekind = uentry_getKind (thisentry); | |
1730 | ||
28bf4b0b | 1731 | if (!uentry_hasRealName (thisentry)) |
1732 | { | |
1733 | llassert (uentry_isGlobalMarker (thisentry)); | |
1734 | ||
1735 | if (neednl) | |
1736 | { | |
1737 | check (fputc ('\n', fout) == (int) '\n'); | |
1738 | } | |
1739 | ||
1740 | fprintf (fout, "*%d (GlobalMarker)\n", KGLOBALMARKER); | |
1741 | lastekind = KINVALID; | |
1742 | linelen = 0; | |
1743 | neednl = FALSE; | |
1744 | } | |
1745 | else | |
1746 | { | |
1747 | if (thisekind != lastekind) | |
1748 | { | |
1749 | if (neednl) | |
1750 | { | |
1751 | check (fputc ('\n', fout) == (int) '\n'); | |
1752 | } | |
1753 | ||
1754 | neednl = FALSE; | |
1755 | lastentry = uentry_undefined; | |
1756 | fprintf (fout, "*%d (%s)\n", ekind_toInt (thisekind), | |
1757 | cstring_toCharsSafe (ekind_capName (thisekind))); | |
1758 | lastekind = thisekind; | |
1759 | linelen = 0; | |
1760 | } | |
1761 | ||
1762 | /* | |
1763 | ** evans - 2001-02-18 - added the - 48 fudge factor... | |
1764 | ** extra characters dumped, but I haven't counded them carefully... | |
1765 | */ | |
1766 | ||
1767 | if (uentry_isInvalid (lastentry) || !uentry_equiv (lastentry, thisentry) | |
1768 | || (linelen > (MAX_DUMP_LINE_LENGTH - (2 * MAX_NAME_LENGTH) - 48))) | |
1769 | { | |
1770 | cstring cdump; | |
1771 | ||
1772 | DPRINTF (("Dumping entry: %d", i)); | |
1773 | cdump = message ("^%d %q", i, uentry_dump (thisentry)); | |
1774 | /* was: cdump = uentry_dump (thisentry)); */ | |
1775 | ||
1776 | lastentry = thisentry; | |
1777 | if (neednl) | |
1778 | { | |
1779 | check (fputc ('\n', fout) == (int) '\n'); | |
1780 | linelen = 0; | |
1781 | } | |
1782 | ||
1783 | linelen += cstring_length (cdump); | |
1784 | ||
1785 | /* no new line here! */ | |
1786 | if (cstring_length (cdump) > 0) | |
1787 | { | |
1788 | check (fputs (cstring_toCharsSafe (cdump), fout) != EOF); | |
1789 | } | |
1790 | ||
1791 | cstring_free (cdump); | |
1792 | neednl = TRUE; | |
1793 | } | |
1794 | else | |
1795 | { | |
1796 | cstring cdump = uentry_rawName (thisentry); | |
1797 | DPRINTF (("Raw name: %s", cdump)); | |
1798 | linelen += (cstring_length (cdump) + 1); | |
1799 | fprintf (fout, "#%s", cstring_toCharsSafe (cdump)); | |
1800 | } | |
1801 | } | |
616915dd | 1802 | } |
1803 | ||
1804 | if (neednl) | |
1805 | { | |
1806 | check (fputc ('\n', fout) == (int) '\n'); | |
1807 | } | |
920a3797 | 1808 | |
1809 | lastekind = KINVALID; | |
1810 | ||
1811 | fprintf(fout, ";; Library constraints\n"); | |
35eea586 | 1812 | |
1813 | /*drl July 27 added this so that libraries without | |
1814 | buffer constraints would be handled correctly. | |
1815 | I'm trying to do this without breaking older libraries. | |
1816 | ||
1817 | Splint should still be able to handle libraries without this message. | |
1818 | */ | |
1819 | ||
1820 | ||
1821 | fprintf(fout, "start_Buffer_Constraints\n"); | |
1822 | ||
920a3797 | 1823 | for (i = 0; i < utab->nentries; i++) |
1824 | { | |
1825 | uentry thisentry = utab->entries[i]; | |
1826 | ||
1827 | if (uentry_isFunction (thisentry) ) | |
1828 | { | |
1829 | constraintList preconditions; | |
1830 | constraintList postconditions; | |
1831 | ||
1832 | preconditions = uentry_getFcnPreconditions (thisentry); | |
1833 | postconditions = uentry_getFcnPostconditions (thisentry); | |
1834 | ||
1835 | if ( constraintList_isDefined(preconditions) || | |
1836 | constraintList_isDefined(postconditions) ) | |
1837 | { | |
28bf4b0b | 1838 | fprintf(fout,"%s\n", cstring_toCharsSafe (uentry_rawName(thisentry) ) ); |
920a3797 | 1839 | if (constraintList_isDefined(preconditions) ) |
1840 | { | |
1841 | fprintf(fout,"pre:\n"); | |
1842 | constraintList_dump(preconditions, fout); | |
1843 | fprintf (fout, ";; end precondition constraints\n" ); | |
1844 | constraintList_free(preconditions); | |
1845 | } | |
1846 | else | |
1847 | { | |
1848 | fprintf(fout,"pre:EMPTY\n"); | |
1849 | } | |
1850 | if (constraintList_isDefined(postconditions) ) | |
1851 | { | |
1852 | fprintf(fout,"post:\n"); | |
1853 | constraintList_dump(postconditions, fout); | |
1854 | fprintf (fout, ";; end precondition constraints\n" ); | |
1855 | constraintList_free(postconditions); | |
1856 | } | |
1857 | else | |
1858 | { | |
1859 | fprintf(fout,"post:EMPTY\n"); | |
1860 | } | |
1861 | } | |
1862 | ||
1863 | } | |
1864 | } | |
616915dd | 1865 | } |
1866 | ||
3e3ec469 | 1867 | |
616915dd | 1868 | void usymtab_load (FILE *f) |
1869 | /*@globals utab, globtab@*/ | |
1870 | /*@modifies utab, *f@*/ | |
1871 | { | |
1872 | char *s = mstring_create (MAX_DUMP_LINE_LENGTH); | |
1873 | char *os = s; | |
1874 | ekind kind = KINVALID; | |
1875 | fileloc loc = g_currentloc; | |
1876 | char c; | |
1877 | uentry ue; | |
1878 | ||
1879 | dbgload = TRUE; | |
1880 | ||
1881 | llassert (utab == globtab); | |
1882 | llassert (utab->nentries == 0); | |
1883 | ||
28bf4b0b | 1884 | while (((s = reader_readLine (f, s, MAX_DUMP_LINE_LENGTH)) != NULL) |
616915dd | 1885 | && *s == ';') |
1886 | { | |
28bf4b0b | 1887 | /* ignore ; comments */ ; |
616915dd | 1888 | } |
28bf4b0b | 1889 | |
616915dd | 1890 | while (s != NULL && *s != ';') |
1891 | { | |
28bf4b0b | 1892 | int index; |
1893 | ||
616915dd | 1894 | if (*s == '*') |
1895 | { | |
28bf4b0b | 1896 | int ek; |
616915dd | 1897 | s++; |
28bf4b0b | 1898 | ek = reader_getInt (&s); |
616915dd | 1899 | |
28bf4b0b | 1900 | if (ek == KGLOBALMARKER) |
1901 | { | |
1902 | uentry lue = uentry_makeGlobalMarker (); | |
1903 | DPRINTF (("Adding global marker: %s", uentry_unparseFull (lue))); | |
1904 | usymtab_addEntryAlways (utab, lue); | |
1905 | kind = KINVALID; | |
1906 | goto nextiter; | |
1907 | } | |
1908 | else | |
1909 | { | |
1910 | kind = ekind_fromInt (ek); | |
1911 | goto nextiter; | |
1912 | } | |
616915dd | 1913 | } |
1914 | ||
1915 | if (*s == '$') | |
1916 | { | |
1917 | llfatalerror | |
1918 | (cstring_makeLiteral | |
1b8ae690 | 1919 | ("Library is in obsolete format. Use splint +whichlib " |
616915dd | 1920 | "to see which library is being loaded.")); |
1921 | } | |
1922 | ||
28bf4b0b | 1923 | if (reader_optCheckChar (&s, '^')) |
1924 | { | |
1925 | index = reader_getInt (&s); | |
1926 | } | |
1927 | else | |
1928 | { | |
1929 | index = -1; | |
1930 | } | |
1931 | ||
1932 | llassert (kind != KINVALID); | |
616915dd | 1933 | ue = uentry_undump (kind, loc, &s); |
28bf4b0b | 1934 | |
1935 | llassert (utab->nentries == index || index == -1); | |
616915dd | 1936 | |
1937 | if (uentry_isValid (ue)) | |
1938 | { | |
28bf4b0b | 1939 | int lastindex = utab->nentries; |
1940 | ue = usymtab_addEntryAlways (utab, ue); | |
3e3ec469 | 1941 | |
1942 | ||
1943 | # if 0 | |
1944 | if (uentry_isConstant (ue)) /*@i23! isPreProcessorMacro */ | |
1945 | { | |
1946 | cstring uname = uentry_getName (ue); | |
1947 | ||
1948 | /* Also check its a macro... */ | |
1949 | DPRINTF (("Installing: %s", uname)); | |
1950 | ||
1951 | cpphash_installMacro | |
1952 | (mstring_copy (cstring_toCharsSafe (uname)), | |
1953 | cstring_length (uname), | |
1954 | cpplib_createDefinition (message ("%s 255", uname), | |
1955 | loc, | |
1956 | FALSE, FALSE).defn, | |
1957 | cpphash_hashCode (cstring_toCharsSafe (uname), | |
1958 | cstring_length (uname), | |
1959 | CPP_HASHSIZE)); | |
1960 | ||
1961 | DPRINTF (("After install: %s", uname)); | |
1962 | } | |
1963 | # endif | |
1964 | ||
28bf4b0b | 1965 | if (utab->nentries != lastindex + 1) |
1966 | { | |
1967 | DPRINTF (("No add: %s", uentry_unparseFull (ue))); | |
1968 | BADBRANCH; | |
1969 | } | |
616915dd | 1970 | /*@-branchstate@*/ |
1971 | } | |
1972 | /*@=branchstate@*/ | |
1973 | ||
1974 | /* | |
1975 | ** now, any other names are the same uentry | |
1976 | */ | |
1977 | ||
1978 | while (*(s++) == '#') | |
1979 | { | |
28bf4b0b | 1980 | cstring name = cstring_fromCharsO (reader_getWord (&s)); |
616915dd | 1981 | uentry nue = uentry_nameCopy (name, ue); |
28bf4b0b | 1982 | /* |
1983 | DPRINTF (("Name copy: %s", uentry_unparseFull (nue))); | |
1984 | BADBRANCH; | |
1985 | */ | |
616915dd | 1986 | |
28bf4b0b | 1987 | usymtab_addEntryAlways (utab, nue); |
616915dd | 1988 | } |
1989 | ||
1990 | while ((c = *s) != '\0' && (c !='\n')) | |
1991 | { | |
1992 | if (c != ' ' || c != '\t') | |
1993 | { | |
1994 | llbuglit ("Junk in load file"); | |
1995 | } | |
1996 | ||
1997 | s++; | |
1998 | } | |
1999 | ||
2000 | nextiter: | |
28bf4b0b | 2001 | { |
2002 | s = reader_readLine (f, os, MAX_DUMP_LINE_LENGTH); | |
2003 | } | |
616915dd | 2004 | } |
2005 | ||
920a3797 | 2006 | /*DRL added 6/21/01 |
2007 | to handle reading of buffer overflow related constraints | |
2008 | */ | |
2009 | while (fgets (s, MAX_DUMP_LINE_LENGTH, f) != NULL | |
2010 | && *s == ';') | |
2011 | { | |
2012 | ; /* ignore ;-comments */ | |
2013 | } | |
35eea586 | 2014 | |
2015 | /*drl July 27 added this so that libraries without | |
2016 | buffer constraints would be handled correctly. | |
2017 | I'm trying to do this without breaking older libraries*/ | |
2018 | ||
2019 | /*check for "optional" start buffer constraints message*/ | |
6fcd0b1e | 2020 | |
2021 | if (mstring_equalPrefix (s, "start_Buffer_Constraints")) | |
35eea586 | 2022 | { |
6fcd0b1e | 2023 | (void) fgets (s, MAX_DUMP_LINE_LENGTH, f); |
35eea586 | 2024 | } |
920a3797 | 2025 | |
2026 | while (s != NULL && *s != ';') | |
2027 | { | |
2028 | constraintList preconditions; | |
2029 | constraintList postconditions; | |
2030 | ||
28bf4b0b | 2031 | cstring name = cstring_fromChars(reader_getWord(&s) ); |
920a3797 | 2032 | cstring temp; |
2033 | ue = usymtab_lookup ( name ); | |
2034 | ||
2035 | cstring_free(name); | |
2036 | ||
2037 | preconditions = constraintList_undefined; | |
2038 | postconditions = constraintList_undefined; | |
2039 | ||
2040 | if (!uentry_isValid(ue) ) | |
2041 | { | |
28bf4b0b | 2042 | llfatalbug ((message("Invalid uentry for %s library file may be corrupted", cstring_fromChars(s) ) )); |
920a3797 | 2043 | } |
2044 | s = fgets (os, MAX_DUMP_LINE_LENGTH, f); | |
2045 | ||
ccf0a4a8 | 2046 | temp = cstring_fromChars (reader_getWord(&s) ); |
920a3797 | 2047 | |
28bf4b0b | 2048 | if (cstring_compareLit (temp,"pre:") == 0 ) |
920a3797 | 2049 | { |
3814599d | 2050 | preconditions = constraintList_undump (f); |
920a3797 | 2051 | } |
28bf4b0b | 2052 | else |
2053 | { | |
2054 | if (cstring_compareLit (temp,"pre:EMPTY") != 0 ) | |
2055 | llfatalbug ((message("Error reading library file pre:EMPTY expected but got %s", temp ) )); | |
2056 | } | |
2057 | ||
920a3797 | 2058 | cstring_free(temp); |
2059 | ||
2060 | s = fgets (os, MAX_DUMP_LINE_LENGTH, f); | |
2061 | ||
28bf4b0b | 2062 | temp = cstring_fromChars(reader_getWord(&s) ); |
ccf0a4a8 | 2063 | if (cstring_compareLit (temp, "post:") == 0 ) |
920a3797 | 2064 | { |
3814599d | 2065 | postconditions = constraintList_undump (f); |
920a3797 | 2066 | } |
28bf4b0b | 2067 | else |
2068 | { | |
ccf0a4a8 | 2069 | if (cstring_compareLit (temp, "post:EMPTY") != 0 ) |
28bf4b0b | 2070 | llfatalbug ((message("Error reading library file post:EMPTY expected but got %s", temp ) )); |
2071 | } | |
2072 | ||
ccf0a4a8 | 2073 | cstring_free (temp); |
920a3797 | 2074 | |
3814599d | 2075 | uentry_setPreconditions (ue, functionConstraint_createBufferConstraint (preconditions)); |
2076 | uentry_setPostconditions (ue, functionConstraint_createBufferConstraint (postconditions)); | |
920a3797 | 2077 | |
2078 | s = fgets (os, MAX_DUMP_LINE_LENGTH, f); | |
2079 | } | |
2080 | ||
616915dd | 2081 | dbgload = FALSE; |
2082 | sfree (os); | |
2083 | } | |
2084 | ||
2085 | /* | |
2086 | ** file scope for static variables | |
2087 | */ | |
2088 | ||
2089 | void | |
2090 | usymtab_enterFile () | |
2091 | /*@globals utab, globtab, filetab@*/ | |
2092 | /*@modifies filetab@*/ | |
2093 | { | |
2094 | llassert (utab == globtab); | |
2095 | ||
2096 | # if 0 | |
2097 | /* check globals */ | |
2098 | ||
2099 | usymtab_entries (globtab, ue) | |
2100 | { | |
2101 | if (sRef_hasDerived (uentry_getSref (ue))) | |
2102 | { | |
80489f0a | 2103 | fprintf (g_warningstream, "Derived Global: %s\n", uentry_unparse (ue)); |
2104 | fprintf (g_warningstream, "sRef: %s\n", sRef_unparseFull (ue->sref)); | |
616915dd | 2105 | } |
2106 | } end_usymtab_entries ; | |
2107 | ||
2108 | # endif | |
2109 | ||
2110 | usymtab_enterScope (); | |
2111 | filetab = utab; | |
2112 | } | |
2113 | ||
2114 | void | |
2115 | usymtab_exitFile () | |
2116 | /*@globals utab, filetab@*/ | |
2117 | /*@modifies filetab, utab@*/ | |
2118 | { | |
2119 | ||
2120 | llassert (utab->lexlevel == 1); | |
2121 | ||
2122 | usymtab_exitScope (exprNode_undefined); | |
2123 | filetab = NULL; | |
2124 | } | |
2125 | ||
2126 | void | |
2127 | usymtab_enterScope () | |
2128 | /*@globals utab, globtab, filetab@*/ | |
2129 | /*@modifies utab@*/ | |
2130 | { | |
2131 | usymtab t = usymtab_create (US_NORMAL, utab, TRUE); | |
2132 | ||
2133 | /* unconditional scope: optimize to avoid copy */ | |
2134 | t->aliases = aliasTable_copy (utab->aliases); | |
2135 | utab = t; | |
2136 | ||
2137 | llassert (usymtab_isDefined (t->env)); | |
2138 | ||
2139 | if (t->env->lexlevel == paramsScope && context_inFunctionLike ()) | |
2140 | { | |
2141 | noshadowerror = TRUE; | |
2142 | usymtab_handleParams (); | |
2143 | noshadowerror = FALSE; | |
2144 | } | |
2145 | } | |
2146 | ||
2147 | /* | |
2148 | ** setup external references: | |
2149 | ** o only, unique params alias external args | |
2150 | ** o other params may alias anything of their type | |
2151 | */ | |
2152 | ||
2153 | static void | |
2154 | usymtab_handleParams (void) | |
2155 | /*@globals utab, globtab, filetab@*/ | |
2156 | /*@modifies utab, globtab@*/ | |
2157 | { | |
2158 | usymtab ptab = utab->env; | |
2159 | uentry fcn = context_getHeader (); | |
2160 | ||
616915dd | 2161 | usymtab_entries (ptab, param) |
2162 | { | |
2163 | uentry ue; | |
2164 | ||
2165 | if (!uentry_isYield (param)) | |
2166 | { | |
2167 | sRef uref; | |
2168 | sRef pref = uentry_getSref (param); | |
616915dd | 2169 | |
28bf4b0b | 2170 | /* Could be a global. */ |
616915dd | 2171 | |
28bf4b0b | 2172 | if (uentry_isAnyParam (param)) |
2173 | { | |
2174 | ue = uentry_makeVariable (fixParamName (uentry_rawName (param)), | |
2175 | uentry_getType (param), | |
2176 | fileloc_copy (uentry_whereDeclared (param)), | |
2177 | FALSE); | |
2178 | ||
2179 | uentry_copyState (ue, param); | |
2180 | uentry_setRefParam (ue); | |
2181 | ||
2182 | ue = usymtab_supEntrySrefReturn (ue); | |
2183 | ||
2184 | /* must be after supercede! */ | |
2185 | ||
2186 | if (!sRef_stateKnown (pref)) | |
616915dd | 2187 | { |
28bf4b0b | 2188 | uentry_setDefState (ue, SS_DEFINED); |
2189 | uentry_setDefState (param, SS_DEFINED); | |
616915dd | 2190 | } |
2191 | else | |
2192 | { | |
28bf4b0b | 2193 | if (sRef_isStateSpecial (pref)) |
2194 | { | |
3e3ec469 | 2195 | uentry_setDefState (ue, SS_SPECIAL); /* ALLOCATED); */ |
2196 | /* evans 2002-01-01: should be unnecessary, the pre clauses | |
2197 | ** set the state if necessary. | |
2198 | */ | |
28bf4b0b | 2199 | } |
2200 | else | |
2201 | { | |
2202 | uentry_setDefState (ue, sRef_getDefState (pref)); | |
2203 | } | |
616915dd | 2204 | } |
28bf4b0b | 2205 | |
2206 | uref = uentry_getSref (ue); | |
2207 | ||
2208 | if (sRef_isStack (uref)) | |
616915dd | 2209 | { |
28bf4b0b | 2210 | alkind pkind = sRef_getAliasKind (pref); |
2211 | ||
2212 | if (alkind_isKnown (pkind) && !alkind_isLocal (pkind) | |
2213 | && !alkind_isStack (pkind)) | |
616915dd | 2214 | { |
28bf4b0b | 2215 | sRef_setAliasKind (uref, pkind, fileloc_undefined); |
2216 | sRef_setOrigAliasKind (uref, pkind); | |
616915dd | 2217 | } |
2218 | else | |
2219 | { | |
28bf4b0b | 2220 | sRef_setAliasKind (uref, AK_IMPTEMP, fileloc_undefined); |
2221 | sRef_setOrigAliasKind (uref, AK_IMPTEMP); | |
2222 | ||
2223 | if (uentry_isOut (param)) | |
2224 | { | |
2225 | ; | |
2226 | } | |
2227 | else | |
2228 | { | |
2229 | sRef_setDefined (uref, fileloc_undefined); | |
2230 | } | |
616915dd | 2231 | } |
28bf4b0b | 2232 | |
616915dd | 2233 | } |
28bf4b0b | 2234 | |
2235 | usymtab_addMustAlias (uref, pref); | |
2236 | ||
2237 | if (!(uentry_isOnly (param) || uentry_isUnique (param))) | |
2238 | { | |
2239 | /* | |
2240 | ** This is needed for detecting possibly aliased parameters. | |
2241 | */ | |
616915dd | 2242 | |
28bf4b0b | 2243 | sRef s = sRef_makeExternal (uref); |
2244 | usymtab_addMustAlias (uref, s); | |
2245 | } | |
2246 | ||
2247 | if (sRef_isKillRef (pref)) | |
2248 | { | |
2249 | sRef_setAliasKind (uref, AK_NEWREF, fileloc_undefined); | |
2250 | sRef_setOrigAliasKind (uref, AK_KILLREF); | |
2251 | } | |
2252 | else if (sRef_isRefCounted (uref)) | |
2253 | { | |
2254 | sRef_setOrigAliasKind (uref, AK_REFCOUNTED); | |
2255 | } | |
2256 | else | |
2257 | { | |
2258 | /* was AK_UNIQUE */ | |
2259 | sRef_setOrigAliasKind (uref, AK_LOCAL); | |
2260 | } | |
616915dd | 2261 | } |
2262 | else | |
2263 | { | |
616915dd | 2264 | } |
2265 | } | |
616915dd | 2266 | } end_usymtab_entries; |
28bf4b0b | 2267 | |
2268 | ||
2269 | if (uentry_hasStateClauseList (fcn)) | |
616915dd | 2270 | { |
28bf4b0b | 2271 | stateClauseList clauses = uentry_getStateClauseList (fcn); |
2272 | ||
2273 | stateClauseList_preElements (clauses, cl) | |
616915dd | 2274 | { |
28bf4b0b | 2275 | fileloc loc = stateClause_loc (cl); |
2276 | sRefSet osrs = sRefSet_undefined; | |
2277 | sRefSet srs; | |
616915dd | 2278 | |
28bf4b0b | 2279 | if (stateClause_isGlobal (cl)) |
2280 | { | |
2281 | DPRINTF (("Global Marker: %s", | |
2282 | sRef_unparseFull (usymtab_lookupGlobalMarker ()))); | |
2283 | llassert (sRef_isGlobalMarker (usymtab_lookupGlobalMarker ())); | |
2284 | srs = sRefSet_single (usymtab_lookupGlobalMarker ()); | |
2285 | osrs = srs; | |
2286 | } | |
2287 | else | |
2288 | { | |
2289 | srs = stateClause_getRefs (cl); | |
2290 | } | |
2291 | ||
2292 | sRefSet_elements (srs, el) | |
616915dd | 2293 | { |
2294 | sRef base = sRef_getRootBase (el); | |
28bf4b0b | 2295 | sRef sb = sRef_updateSref (el); |
2296 | ||
616915dd | 2297 | if (sRef_isResult (base)) |
2298 | { | |
2299 | ; /* nothing to do before */ | |
2300 | } | |
28bf4b0b | 2301 | else if (sRef_isParam (base) || sRef_isGlobalMarker (base)) |
616915dd | 2302 | { |
28bf4b0b | 2303 | if (stateClause_setsMetaState (cl)) |
616915dd | 2304 | { |
28bf4b0b | 2305 | /* copied from exprNode.c:3040 */ |
2306 | qual ql = stateClause_getMetaQual (cl); | |
2307 | annotationInfo ainfo = qual_getAnnotationInfo (ql); | |
2308 | metaStateInfo minfo = annotationInfo_getState (ainfo); | |
2309 | cstring key = metaStateInfo_getName (minfo); | |
2310 | int mvalue = annotationInfo_getValue (ainfo); | |
616915dd | 2311 | |
28bf4b0b | 2312 | DPRINTF (("Sets meta state! %s", stateClause_unparse (cl))); |
2313 | ||
2314 | if (sRef_isResult (base)) | |
616915dd | 2315 | { |
28bf4b0b | 2316 | BADBRANCH; |
2317 | } | |
2318 | else | |
2319 | { | |
2320 | sRef_setMetaStateValueComplete (sb, key, mvalue, loc); | |
2321 | } | |
2322 | } | |
2323 | else | |
2324 | { | |
2325 | sRefMod modf = stateClause_getEntryFunction (cl); | |
2326 | ||
2327 | if (modf != NULL) | |
2328 | { | |
2329 | sRefSet aliases = usymtab_allAliases (sb); | |
2330 | ||
2331 | modf (sb, loc); | |
2332 | ||
2333 | sRefSet_elements (aliases, sr) | |
2334 | { | |
2335 | modf (sr, loc); | |
2336 | } end_sRefSet_elements ; | |
2337 | ||
2338 | sRefSet_free (aliases); | |
2339 | } | |
616915dd | 2340 | } |
2341 | } | |
2342 | else | |
2343 | { | |
2344 | if (sRef_isValid (base)) | |
2345 | { | |
28bf4b0b | 2346 | DPRINTF (("Base: %s", sRef_unparseFull (base))); |
616915dd | 2347 | BADBRANCH; |
2348 | } | |
2349 | } | |
2350 | } end_sRefSet_elements ; | |
28bf4b0b | 2351 | } end_stateClauseList_preElements ; |
2352 | } | |
2353 | } | |
2354 | ||
616915dd | 2355 | void |
2356 | usymtab_enterFunctionScope (uentry fcn) | |
2357 | /*@globals utab, filetab, globtab@*/ | |
2358 | /*@modifies utab@*/ | |
2359 | { | |
2360 | usymtab t = usymtab_create (US_NORMAL, utab, TRUE); | |
2361 | ||
6483a926 | 2362 | DPRINTF (("Enter function: %s", uentry_unparse (fcn))); |
2363 | ||
616915dd | 2364 | if (utab->lexlevel != fileScope) |
2365 | { | |
2366 | if (utab->lexlevel > fileScope) | |
2367 | { | |
7ebcc5bb | 2368 | llparseerror (cstring_makeLiteral ("New function scope inside function")); |
616915dd | 2369 | |
2370 | while (utab->lexlevel > fileScope) | |
2371 | { | |
2372 | /*@i@*/ utab = usymtab_dropEnv (utab); | |
2373 | /*@-branchstate@*/ | |
2374 | } | |
2375 | /*@=branchstate@*/ | |
2376 | } | |
2377 | else | |
2378 | { | |
2379 | llfatalbug (cstring_makeLiteral ("New function not inside file.")); | |
2380 | } | |
2381 | /*@-branchstate@*/ } /*@=branchstate@*/ | |
2382 | ||
28bf4b0b | 2383 | utab = t; |
2384 | ||
2385 | DPRINTF (("Globs: %s", globSet_unparse (uentry_getGlobs (fcn)))); | |
2386 | ||
616915dd | 2387 | globSet_allElements (uentry_getGlobs (fcn), el) |
2388 | { | |
28bf4b0b | 2389 | DPRINTF (("Here we go: %s", sRef_unparseFull (el))); |
616915dd | 2390 | |
2391 | if (sRef_isUndefGlob (el)) | |
2392 | { | |
2393 | int index = sRef_getScopeIndex (el); | |
2394 | sRef sr = sRef_updateSref (el); | |
2395 | fileloc loc = uentry_whereEarliest (fcn); | |
28bf4b0b | 2396 | |
2397 | DPRINTF (("update: %s", sRef_unparseFull (sr))); | |
2398 | DPRINTF (("Undef!")); | |
616915dd | 2399 | if (sRef_isFileStatic (el)) |
2400 | { | |
2401 | ctype ct = sRef_getType (el); | |
2402 | uentry ue; | |
2403 | ||
2404 | llassert (usymtab_isDefined (filetab)); | |
2405 | ||
2406 | ue = usymtab_fetchIndex (filetab, index); | |
2407 | ||
2408 | if (ctype_isRealArray (ct) || ctype_isRealSU (ct)) | |
2409 | { | |
2410 | sRef_setAllocated (sr, loc); | |
2411 | } | |
2412 | else | |
2413 | { | |
2414 | sRef_setUndefined (sr, loc); | |
2415 | } | |
2416 | } | |
2417 | else | |
2418 | { | |
2419 | uentry ue = globtab->entries[index]; | |
2420 | ctype ct = uentry_getType (ue); | |
2421 | ||
2422 | if (ctype_isArray (ct) || ctype_isSU (ct)) | |
2423 | { | |
2424 | sRef_setAllocated (sr, loc); | |
2425 | } | |
2426 | else | |
2427 | { | |
2428 | sRef_setUndefined (sr, loc); | |
2429 | } | |
2430 | } | |
2431 | } | |
2432 | else if (sRef_isAllocated (el)) | |
2433 | { | |
2434 | sRef sr = sRef_updateSref (el); | |
2435 | fileloc loc = uentry_whereEarliest (fcn); | |
2436 | ||
2437 | sRef_setAllocated (sr, loc); | |
2438 | } | |
2439 | else if (sRef_isPartial (el)) | |
2440 | { | |
2441 | sRef sr = sRef_updateSref (el); | |
2442 | fileloc loc = uentry_whereEarliest (fcn); | |
2443 | ||
2444 | sRef_setPartial (sr, loc); | |
2445 | } | |
2446 | else | |
2447 | { | |
28bf4b0b | 2448 | /* |
2449 | sRef sr = sRef_updateSref (el); | |
2450 | fileloc loc = uentry_whereEarliest (fcn); | |
2451 | ||
2452 | sRef_setDefined (sr, loc); | |
2453 | */ | |
2454 | ||
2455 | /* defined */ | |
2456 | /* shouldn't need to do anything! */ | |
616915dd | 2457 | } |
2458 | } end_globSet_allElements; | |
2459 | ||
28bf4b0b | 2460 | DPRINTF (("Globs after: %s", globSet_unparse (uentry_getGlobs (fcn)))); |
6483a926 | 2461 | # ifdef DEBUGSPLINT |
2462 | usymtab_checkAllValid (); | |
2463 | # endif | |
616915dd | 2464 | } |
2465 | ||
2466 | static void | |
2467 | usymtab_caseBranch (void) | |
2468 | /*@modifies utab@*/ | |
2469 | { | |
2470 | usymtab t = usymtab_create (US_CBRANCH, utab, FALSE); | |
2471 | utab = t; | |
2472 | } | |
2473 | ||
2474 | void | |
2475 | usymtab_switchBranch (/*@unused@*/ exprNode s) | |
2476 | /*@modifies utab@*/ | |
2477 | { | |
2478 | usymtab t = usymtab_create (US_SWITCH, utab, FALSE); | |
2479 | ||
2480 | t->aliases = aliasTable_copy (utab->aliases); | |
28bf4b0b | 2481 | utab = t; |
616915dd | 2482 | } |
2483 | ||
2484 | void | |
2485 | usymtab_trueBranch (/*@only@*/ guardSet guards) | |
2486 | /*@modifies utab@*/ | |
2487 | { | |
2488 | usymtab t = usymtab_create (US_TBRANCH, utab, FALSE); | |
2489 | ||
2490 | /* | |
2491 | ** not true! (could be in a macro) | |
2492 | ** | |
2493 | ** llassertprint (utab->lexlevel > paramsScope, | |
2494 | ** ("not in scope: %s", usymtab_unparseLocal ())); | |
2495 | ** | |
2496 | */ | |
2497 | ||
2498 | guardSet_free (t->guards); | |
2499 | t->guards = guards; | |
28bf4b0b | 2500 | |
2501 | aliasTable_free (t->aliases); | |
616915dd | 2502 | t->aliases = aliasTable_copy (utab->aliases); |
2503 | ||
28bf4b0b | 2504 | utab = t; |
616915dd | 2505 | } |
2506 | ||
2507 | /* | |
2508 | ** consider, | |
2509 | ** | |
2510 | ** { int a; if (...) a = 3; < a may be undefined here! | |
2511 | ** | |
2512 | */ | |
2513 | ||
2514 | void | |
28bf4b0b | 2515 | usymtab_popTrueBranch (exprNode pred, exprNode expr, clause cl) /*@modifies utab@*/ |
616915dd | 2516 | { |
2517 | /* | |
2518 | ** add a false branch | |
2519 | ** (could be done more efficiently as a special case, but | |
2520 | ** it is better to only maintain one version of the code) | |
2521 | */ | |
2522 | ||
28bf4b0b | 2523 | if (utab->kind != US_TBRANCH |
2524 | && context_inIterDef ()) | |
2525 | { | |
2526 | usymtab_exitScope (expr); | |
2527 | } | |
2528 | else | |
2529 | { | |
2530 | DPRINTF (("pop true branch..")); | |
2531 | usymtab_altBranch (guardSet_invert (exprNode_getGuards (pred))); | |
2532 | usymtab_popBranches (pred, expr, exprNode_undefined, TRUE, cl); | |
2533 | } | |
616915dd | 2534 | } |
2535 | ||
2536 | void | |
2537 | usymtab_popCaseBranch () /*@modifies utab@*/ | |
2538 | { | |
2539 | llassert (utab->kind == US_CBRANCH); | |
2540 | usymtab_quietPlainExitScope (); | |
2541 | } | |
2542 | ||
2543 | void | |
2544 | usymtab_popTrueExecBranch (exprNode pred, exprNode expr, clause cl) | |
2545 | { | |
2546 | /* | |
2547 | ** add a false branch that must return --- that is, | |
2548 | ** the true branch is always executed! | |
2549 | */ | |
2550 | ||
2551 | usymtab_altBranch (guardSet_invert (exprNode_getGuards (pred))); | |
2552 | usymtab_popBranches (pred, expr, exprNode_makeMustExit (), FALSE, cl); | |
2553 | } | |
2554 | ||
2555 | void | |
2556 | usymtab_popOrBranch (exprNode pred, exprNode expr) | |
2557 | /*@modifies utab@*/ | |
2558 | { | |
2559 | bool mustReturn; | |
2560 | usymtab env = utab->env; | |
2561 | usymtab otab = utab; | |
2562 | int i = 0; | |
2563 | ||
2564 | llassert (env != NULL); | |
2565 | ||
2566 | if (exprNode_isError (expr)) | |
2567 | { | |
2568 | mustReturn = FALSE; | |
2569 | } | |
2570 | else | |
2571 | { | |
2572 | mustReturn = exprNode_mustEscape (expr); | |
2573 | } | |
2574 | ||
2575 | ||
2576 | llassert (utab->kind == US_TBRANCH); | |
2577 | ||
2578 | /* | |
2579 | ** merge each entry in table with its original | |
2580 | ** unless execution cannot continue after this branch | |
2581 | */ | |
2582 | ||
2583 | for (i = 0; i < utab->nentries; i++) | |
2584 | { | |
2585 | uentry current = utab->entries[i]; | |
2586 | uentry old = usymtab_lookupAux (env, uentry_rawName (current)); | |
2587 | ||
2588 | uentry_mergeState (old, current, exprNode_loc (expr), | |
2589 | mustReturn, FALSE, TRUE, ORCLAUSE); | |
2590 | } | |
2591 | ||
2592 | ||
2593 | if (mustReturn) | |
2594 | { | |
2595 | env->guards = guardSet_levelUnionFree (env->guards, | |
2596 | guardSet_invert (exprNode_getGuards (pred)), | |
2597 | env->lexlevel); | |
2598 | } | |
2599 | else | |
2600 | { | |
2601 | env->aliases = aliasTable_levelUnion (env->aliases, otab->aliases, env->lexlevel); | |
2602 | } | |
2603 | ||
2604 | /* env is now utab */ | |
2605 | usymtab_quietPlainExitScope (); | |
2606 | } | |
2607 | ||
2608 | /* | |
2609 | ** case syntax in C is very unrestricted. This is unfortunate. | |
2610 | ** | |
2611 | ** A switch case is ended either by a new case or default, or | |
2612 | ** a close } that may close the switch or some other control | |
2613 | ** structure. | |
2614 | */ | |
2615 | ||
2616 | bool | |
2617 | usymtab_newCase (/*@unused@*/ exprNode pred, exprNode last) | |
2618 | /*@modifies utab@*/ | |
2619 | { | |
2620 | bool mustBreak = usymtab_mustBreak (utab); | |
2621 | bool mustReturn = usymtab_mustEscape (utab); | |
2622 | usymtab stab = utab; | |
2623 | ||
7ac543fa | 2624 | DPRINTF (("New case!")); |
2625 | ||
616915dd | 2626 | /* |
2627 | ** Find last case (or outer switch) | |
2628 | */ | |
2629 | ||
2630 | while (stab->kind != US_CBRANCH && stab->kind != US_SWITCH) | |
2631 | { | |
2632 | stab = stab->env; | |
2633 | llassert (stab != GLOBAL_ENV); | |
2634 | } | |
7ac543fa | 2635 | |
616915dd | 2636 | while (stab->kind == US_CBRANCH) |
2637 | { | |
2638 | stab = stab->env; | |
2639 | llassert (stab != GLOBAL_ENV); | |
2640 | } | |
2641 | ||
2642 | /* | |
2643 | ** if its a fall through case, merge in outside entries and last case. | |
2644 | ** | |
2645 | ** e.g., | |
2646 | ** ... | |
2647 | ** switch | |
2648 | ** case 1: x = 3; <fall through> | |
2649 | ** case 2: << x may not be defined | |
2650 | ** | |
2651 | */ | |
2652 | ||
2653 | if (!mustBreak && !mustReturn && utab->kind == US_CBRANCH) | |
2654 | { | |
2655 | llassert (stab->kind == US_SWITCH || stab->kind == US_NORMAL); | |
2656 | ||
2657 | usymtab_entries (utab, ue) /* but, keep track of used variables */ | |
2658 | { | |
2659 | uentry old = usymtab_lookupAux (stab, uentry_rawName (ue)); | |
2660 | ||
2661 | llassert (uentry_isValid (old)); | |
2662 | ||
2663 | /* modifies ue, not old */ | |
2664 | ||
2665 | uentry_mergeState (ue, old, exprNode_loc (last), | |
2666 | FALSE, FALSE, TRUE, CASECLAUSE); | |
2667 | } end_usymtab_entries; | |
2668 | ||
2669 | utab->aliases = aliasTable_levelUnion (utab->aliases, | |
2670 | stab->aliases, utab->lexlevel); | |
2671 | ||
2672 | /* | |
2673 | ** No need for a new branch. | |
2674 | */ | |
2675 | ||
2676 | return FALSE; | |
2677 | } | |
2678 | else | |
2679 | { | |
2680 | usymtab_caseBranch (); | |
2681 | /*@-mustfree@*/ /*< utab->aliases >*/ | |
2682 | utab->aliases = aliasTable_copy (stab->aliases); | |
2683 | /*@=mustfree@*/ | |
2684 | ||
2685 | return TRUE; | |
2686 | } | |
2687 | } | |
2688 | ||
2689 | /* | |
2690 | ** for && (both pred and expr are executed) | |
2691 | */ | |
2692 | ||
2693 | void | |
2694 | usymtab_popAndBranch (exprNode pred, /*@unused@*/ exprNode expr) | |
2695 | /*@modifies utab@*/ | |
2696 | { | |
2697 | usymtab env = utab->env; | |
2698 | usymtab otab= utab; | |
2699 | int i = 0; | |
2700 | ||
28bf4b0b | 2701 | llassert (utab->kind == US_TBRANCH); |
616915dd | 2702 | |
2703 | /* | |
2704 | ** merge each entry in table with its original | |
2705 | ** unless execution cannot continue after this branch | |
2706 | */ | |
2707 | ||
2708 | for (i = 0; i < utab->nentries; i++) | |
2709 | { | |
2710 | uentry current = utab->entries[i]; | |
2711 | sRef tref = uentry_getSref (current); | |
2712 | uentry old = usymtab_lookupAux (env, uentry_rawName (current)); | |
2713 | sRef oref = uentry_getSref (old); | |
2714 | ||
2715 | /* note that is current is in a nested branch, | |
2716 | it may create a "new" old entry. */ | |
2717 | ||
2718 | llassert (uentry_isValid (old)); | |
2719 | uentry_mergeState (old, current, exprNode_loc (expr), | |
2720 | FALSE, FALSE, TRUE, ANDCLAUSE); | |
2721 | ||
2722 | /* | |
2723 | ** if is it defined by the second clause, then it should be defined. | |
2724 | */ | |
2725 | ||
2726 | if (sRef_isAnyDefined (tref) | |
2727 | && (sRef_isAllocated (oref) || sRef_isStateUndefined (oref))) | |
2728 | { | |
2729 | sRef_setDefined (oref, g_currentloc); | |
2730 | } | |
2731 | } | |
2732 | ||
2733 | utab->guards = guardSet_levelUnionFree (utab->guards, | |
2734 | guardSet_invert (exprNode_getGuards (pred)), | |
2735 | utab->lexlevel); | |
2736 | utab->aliases = aliasTable_levelUnion (utab->aliases, otab->aliases, utab->lexlevel); | |
2737 | ||
2738 | usymtab_quietPlainExitScope (); | |
2739 | ||
2740 | } | |
2741 | ||
2742 | /* | |
2743 | ** Stack should be [ US_CBRANCH+ US_SWITCH ] | |
2744 | ** Only branches which do not return (except possibly the last branch) are included. | |
2745 | ** | |
2746 | ** Conditionally merge state from all CBRANCHes. | |
2747 | ** | |
2748 | ** If allpaths is TRUE, then all possible executions go through some switch | |
2749 | ** case, and the original scope is not merged. | |
2750 | */ | |
2751 | ||
2752 | void | |
2753 | usymtab_exitSwitch (/*@unused@*/ exprNode sw, bool allpaths) | |
2754 | /*@modifies utab@*/ | |
2755 | { | |
2756 | usymtab ttab = utab; | |
2757 | usymtab stab = ttab; | |
2758 | usymtab ltab = ttab; | |
2759 | bool lastMustReturn = usymtab_mustEscape (utab); | |
2760 | int i; | |
2761 | ||
2762 | ||
2763 | while (stab->kind == US_CBRANCH) | |
2764 | { | |
2765 | stab = stab->env; | |
2766 | llassert (stab != GLOBAL_ENV); | |
2767 | } | |
2768 | ||
2769 | while (stab->kind == US_NORMAL) | |
2770 | { | |
2771 | stab = stab->env; | |
2772 | llassert (stab != GLOBAL_ENV); | |
2773 | } | |
2774 | ||
2775 | llassert (stab->kind == US_SWITCH); | |
2776 | ||
2777 | /* go to the scope outside the switch (US_SWITCH is just a marker! */ | |
2778 | stab = stab->env; | |
2779 | llassert (stab != GLOBAL_ENV); | |
2780 | ||
2781 | ||
2782 | ttab = ttab->env; | |
2783 | llassert (usymtab_isDefined (ttab)); | |
2784 | ||
2785 | if (ttab->kind == US_CBRANCH) | |
2786 | { | |
2787 | /* was quietPlainExitScope --- but, can't free it yet! */ | |
2788 | utab = utab->env; | |
2789 | llassert (utab != GLOBAL_ENV); | |
2790 | ||
2791 | while (ttab->kind == US_CBRANCH) | |
2792 | { | |
2793 | /* | |
2794 | ** (from popTrueBranch) | |
2795 | */ | |
2796 | ||
2797 | bool mustReturn = usymtab_mustEscape (ttab); | |
2798 | bool mustBreak = usymtab_mustBreak (ttab); | |
2799 | ||
2800 | usymtab_entries (ttab, current) | |
2801 | { | |
2802 | uentry old = /*@-compmempass@*/ usymtab_lookupAux (ltab, uentry_rawName (current)); | |
2803 | /*@=compmempass@*/ | |
2804 | ||
2805 | /* | |
2806 | ** note that is this is in a nested branch, | |
2807 | ** it may create a "new" old entry. | |
2808 | */ | |
2809 | ||
2810 | if (uentry_isValid (old)) | |
2811 | { | |
2812 | if (lastMustReturn) | |
2813 | { | |
2814 | uentry_mergeUses (current, old); | |
2815 | uentry_setState (old, current); | |
2816 | } | |
2817 | else | |
2818 | { | |
2819 | uentry_mergeState (old, current, exprNode_loc (sw), | |
2820 | mustReturn, FALSE, TRUE, SWITCHCLAUSE); | |
2821 | } | |
2822 | } | |
2823 | else | |
2824 | { | |
2825 | ; | |
2826 | } | |
2827 | } end_usymtab_entries; | |
2828 | ||
2829 | /* | |
2830 | ** if entry is not in symbol table for this case, merge with pre-switch | |
2831 | ** table | |
2832 | */ | |
2833 | ||
2834 | if (!mustReturn && !mustBreak) | |
2835 | { | |
2836 | usymtab_entries (stab, current) | |
2837 | { | |
2838 | if (usymtab_getIndex (ttab, uentry_rawName (current)) == NOT_FOUND) | |
2839 | { | |
2840 | uentry old = /*@-compmempass@*/ | |
2841 | usymtab_lookupAux (ltab, uentry_rawName (current)); | |
2842 | /*@=compmempass@*/ | |
2843 | ||
2844 | llassert (uentry_isValid (old)); | |
2845 | uentry_mergeState (old, current, exprNode_loc (sw), | |
2846 | FALSE, FALSE, TRUE, SWITCHCLAUSE); | |
2847 | } | |
2848 | } end_usymtab_entries; | |
2849 | } | |
2850 | ||
2851 | ltab->env = ttab->env; | |
2852 | ttab = ltab->env; | |
2853 | ||
2854 | /* | |
2855 | ** Suprious error, becuase of environments. | |
2856 | */ | |
2857 | ||
2858 | /*@i1@*/ utab = ltab; | |
2859 | ||
2860 | lastMustReturn = FALSE; | |
2861 | /*@-branchstate@*/ | |
2862 | } | |
2863 | } | |
2864 | /*@=branchstate@*/ | |
2865 | ||
2866 | /* | |
2867 | ** now, there is one US_CBRANCH. Merge this with the stab. | |
2868 | */ | |
2869 | ||
2870 | ||
2871 | for (i = 0; i < ltab->nentries; i++) | |
2872 | { | |
2873 | uentry current = ltab->entries[i]; | |
2874 | uentry old = usymtab_lookupAux (stab, uentry_rawName (current)); | |
2875 | ||
2876 | /* note that is this is in a nested branch, | |
2877 | it may create a "new" old entry. */ | |
2878 | ||
2879 | ||
2880 | if (uentry_isValid (old)) | |
2881 | { | |
2882 | if (allpaths) | |
2883 | { | |
2884 | uentry_mergeUses (current, old); | |
2885 | uentry_setState (old, current); | |
2886 | } | |
2887 | else | |
2888 | { | |
2889 | uentry_mergeState (old, current, exprNode_loc (sw), | |
2890 | FALSE, FALSE, TRUE, SWITCHCLAUSE); | |
2891 | } | |
2892 | } | |
2893 | else | |
2894 | { | |
2895 | } | |
2896 | } | |
2897 | ||
2898 | /* | |
2899 | ** exit the switch | |
2900 | */ | |
2901 | ||
2902 | ||
2903 | /* | |
2904 | ** switch may or may not be followed by a new scope | |
2905 | */ | |
2906 | ||
2907 | if (utab->kind == US_SWITCH) | |
2908 | { | |
2909 | usymtab_quietPlainExitScope (); | |
2910 | } | |
2911 | else | |
2912 | { | |
2913 | usymtab_quietPlainExitScope (); | |
2914 | llassert (utab->kind == US_SWITCH); | |
2915 | usymtab_quietPlainExitScope (); | |
2916 | } | |
2917 | ||
2918 | } | |
2919 | ||
2920 | static void | |
2921 | updateNullState (sRef el, /*@notnull@*/ usymtab ttab, | |
2922 | /*@notnull@*/ usymtab ftab, bool trueGuard) | |
2923 | { | |
2924 | sRef base = sRef_getRootBase (el); | |
28bf4b0b | 2925 | int level = sRef_lexLevel (base); |
616915dd | 2926 | |
2927 | if (sRef_isCvar (base)) | |
2928 | { | |
2929 | usymId index = sRef_getScopeIndex (base); | |
2930 | uentry ue = usymtab_getRefTab (ttab, level, index); | |
2931 | ||
2932 | if (!uentry_isLset (ue)) | |
2933 | { | |
2934 | sRef sr = uentry_getSref (ue); | |
2935 | ||
2936 | if (trueGuard) | |
2937 | { | |
2938 | sRef_setDerivNullState (sr, el, NS_NOTNULL); | |
2939 | } | |
2940 | else | |
2941 | { | |
2942 | if (!guardSet_isGuarded (ttab->guards, el) | |
2943 | && !sRef_isNotNull (sr)) | |
2944 | { | |
393e573f | 2945 | DPRINTF (("Here! %s / %s", |
2946 | sRef_unparseFull (sr), | |
2947 | sRef_unparseFull (el))); | |
616915dd | 2948 | sRef_setDerivNullState (sr, el, NS_DEFNULL); |
393e573f | 2949 | } |
616915dd | 2950 | } |
2951 | } | |
2952 | else | |
2953 | { | |
393e573f | 2954 | ; |
2955 | } | |
616915dd | 2956 | |
2957 | ue = usymtab_getRefTab (ftab, level, index); | |
2958 | ||
2959 | if (!uentry_isLset (ue)) | |
2960 | { | |
2961 | sRef sr = uentry_getSref (ue); | |
2962 | ||
616915dd | 2963 | if (!trueGuard) /* yikes! forgot the ! */ |
2964 | { | |
2965 | sRef_setDerivNullState (sr, el, NS_NOTNULL); | |
2966 | } | |
2967 | else | |
2968 | { | |
2969 | ||
2970 | if (!guardSet_isGuarded (ftab->guards, el) | |
2971 | && !sRef_isNotNull (sr)) | |
2972 | { | |
2973 | sRef_setDerivNullState (sr, el, NS_DEFNULL); | |
393e573f | 2974 | } |
616915dd | 2975 | } |
2976 | } | |
2977 | else | |
2978 | { | |
28bf4b0b | 2979 | ; |
2980 | } | |
2981 | } | |
2982 | } | |
616915dd | 2983 | |
2984 | void | |
2985 | usymtab_popBranches (exprNode pred, exprNode tbranch, exprNode fbranch, | |
2986 | bool isOpt, clause cl) | |
2987 | /*@modifies utab@*/ | |
2988 | { | |
2989 | int i = 0; | |
2990 | usymtab ftab = utab; | |
2991 | usymtab ttab = utab->env; | |
2992 | ||
2993 | fileloc loc; | |
2994 | usymtab env; | |
2995 | guardSet guards = exprNode_getGuards (pred); | |
2996 | sRefSet tguards = guardSet_getTrueGuards (guards); | |
2997 | sRefSet fguards = guardSet_getFalseGuards (guards); | |
2998 | bool mustReturnT = exprNode_mustEscape (tbranch); | |
2999 | bool mustReturnF = exprNode_mustEscape (fbranch); | |
28bf4b0b | 3000 | |
3001 | DPRINTF (("Pop branches: %s [mustreturn: %s/%s]", exprNode_unparse (pred), | |
3002 | bool_unparse (mustReturnT), | |
3003 | bool_unparse (mustReturnF))); | |
3004 | ||
616915dd | 3005 | if (exprNode_isDefined (fbranch)) |
3006 | { | |
3007 | loc = exprNode_loc (fbranch); | |
3008 | } | |
3009 | else | |
3010 | { | |
3011 | loc = exprNode_loc (tbranch); | |
3012 | } | |
3013 | ||
3014 | llassert (usymtab_isDefined (ttab)); | |
3015 | ||
3016 | env = ttab->env; | |
3017 | ||
3018 | llassert (usymtab_isDefined (env)); | |
3019 | llassert (ftab->kind == US_FBRANCH); | |
3020 | llassert (ttab->kind == US_TBRANCH); | |
3021 | ||
3022 | /* | |
3023 | ** For each element that is true guarded (i.e., if (x != NULL)) | |
3024 | ** make x = null in false branch, | |
3025 | ** and x = notnull in true branch. | |
3026 | ** unless x was set locally in that branch. | |
3027 | ** For each element that is false guarded (x == NULL) | |
3028 | ** make x = null in true, notnull in false. | |
3029 | ** | |
3030 | ** For each element that is either guarded (pred(x)) | |
3031 | ** | |
3032 | */ | |
3033 | ||
3034 | sRefSet_allElements (tguards, el) | |
3035 | { | |
3036 | updateNullState (el, ttab, ftab, TRUE); | |
3037 | } end_sRefSet_allElements; | |
3038 | ||
3039 | sRefSet_allElements (fguards, el) | |
3040 | { | |
3041 | updateNullState (el, ttab, ftab, FALSE); | |
3042 | } end_sRefSet_allElements; | |
3043 | ||
3044 | /* | |
3045 | ** | |
3046 | ** if an entry is in both true and false, merge the entries, | |
3047 | ** then replace original with new state. | |
3048 | ** | |
3049 | ** if an entry is in one table, merge it with the original. | |
3050 | */ | |
28bf4b0b | 3051 | |
3052 | DPRINTF (("ftab: %d", ftab->nentries)); | |
3053 | ||
616915dd | 3054 | for (i = 0; i < ftab->nentries; i++) |
3055 | { | |
3056 | uentry fthis = ftab->entries[i]; | |
3057 | uentry old = usymtab_lookupAux (env, uentry_rawName (fthis)); | |
3058 | int tindex = usymtab_getIndex (ttab, uentry_rawName (fthis)); | |
3059 | ||
28bf4b0b | 3060 | DPRINTF (("Entry: %s / %s", uentry_unparseFull (fthis), uentry_unparseFull (old))); |
3061 | ||
616915dd | 3062 | if (uentry_isUndefined (old)) |
3063 | { | |
3064 | /* possible entry was added as an undefined id */ | |
28bf4b0b | 3065 | DPRINTF (("Undefined! %s", uentry_rawName (fthis))); |
616915dd | 3066 | continue; |
3067 | } | |
3068 | ||
3069 | if (tindex != NOT_FOUND) | |
3070 | { | |
3071 | uentry tthis = ttab->entries[tindex]; | |
28bf4b0b | 3072 | |
616915dd | 3073 | /* note that is this is in a nested branch, |
3074 | it may create a "new" old entry. */ | |
3075 | ||
3076 | if (!mustReturnF) | |
3077 | { | |
3078 | if (!mustReturnT) | |
3079 | { | |
616915dd | 3080 | uentry_mergeState (fthis, tthis, loc, |
3081 | mustReturnT, FALSE, FALSE, cl); | |
3082 | } | |
3083 | else | |
3084 | { | |
3085 | uentry_mergeUses (fthis, tthis); | |
3086 | } | |
3087 | ||
3088 | uentry_setState (old, fthis); | |
3089 | ||
3090 | /*@-mustfree@*/ | |
3091 | } | |
3092 | /*@=mustfree@*/ | |
3093 | else | |
3094 | { | |
3095 | uentry_setState (old, tthis); | |
3096 | uentry_mergeState (old, fthis, loc, mustReturnF, | |
3097 | TRUE, FALSE, cl); | |
3098 | } | |
3099 | ||
3100 | ttab->entries[tindex] = uentry_undefined; | |
3101 | uentry_free (tthis); | |
3102 | } | |
3103 | else | |
3104 | { | |
3105 | uentry_mergeState (old, fthis, loc, mustReturnF, TRUE, FALSE, cl); | |
3106 | } | |
3107 | } | |
3108 | ||
3109 | for (i = 0; i < ttab->nentries; i++) | |
3110 | { | |
3111 | uentry current = ttab->entries[i]; | |
3112 | ||
28bf4b0b | 3113 | DPRINTF (("ttab: %s", uentry_unparseFull (current))); |
3114 | ||
616915dd | 3115 | if (!uentry_isUndefined (current)) |
3116 | { | |
3117 | uentry old = usymtab_lookupAux (env, uentry_rawName (current)); | |
3118 | ||
28bf4b0b | 3119 | DPRINTF (("Old: %s", uentry_unparseFull (old))); |
3120 | ||
3121 | if (uentry_isUndefined (old)) | |
3122 | { | |
3123 | llcontbug (message ("Undefined entry: %s", uentry_rawName (current))); | |
3124 | continue; | |
3125 | } | |
3126 | ||
616915dd | 3127 | if (mustReturnF) |
3128 | { | |
3129 | uentry_mergeUses (current, old); | |
3130 | uentry_setState (old, current); | |
3131 | } | |
3132 | else | |
3133 | { | |
3134 | /* | |
28bf4b0b | 3135 | ** Assumes false branch is a fall-through if |
616915dd | 3136 | ** fbranch is not defined. This is true, unless |
3137 | ** where was some greivous error in processing | |
3138 | ** the else branch of an if-then, in which case | |
3139 | ** this is probably the right thing to do anyway. | |
3140 | */ | |
3141 | ||
3142 | uentry_mergeState (old, current, loc, mustReturnT, | |
3143 | FALSE, isOpt, cl); | |
3144 | } | |
28bf4b0b | 3145 | |
3146 | DPRINTF (("==> %s", uentry_unparseFull (old))); | |
616915dd | 3147 | } |
3148 | } | |
616915dd | 3149 | |
3150 | /* | |
3151 | ** Plain levelUnion doesn't work, since we need to use the sRef's in env->aliases | |
3152 | ** if they are present. | |
3153 | */ | |
3154 | ||
3155 | llassert (NOALIAS (env->aliases, ttab->aliases)); | |
3156 | llassert (NOALIAS (env->aliases, ftab->aliases)); | |
3157 | ||
3158 | aliasTable_free (env->aliases); | |
3159 | ||
3160 | env->aliases = aliasTable_levelUnionNew (ttab->aliases, | |
3161 | ftab->aliases, env->lexlevel); | |
3162 | ||
3163 | aliasTable_fixSrefs (env->aliases); | |
28bf4b0b | 3164 | |
3165 | DPRINTF (("Aliases: %s", aliasTable_unparse (env->aliases))); | |
616915dd | 3166 | |
3167 | /* exit true and false scopes */ | |
3168 | usymtab_quietPlainExitScope (); | |
3169 | usymtab_quietPlainExitScope (); | |
3170 | ||
3171 | if (mustReturnT) | |
3172 | { | |
3173 | utab->guards = guardSet_levelUnionFree | |
3174 | (utab->guards, | |
3175 | guardSet_invert (exprNode_getGuards (pred)), | |
3176 | utab->lexlevel); | |
3177 | } | |
3178 | ||
3179 | if (mustReturnF) | |
3180 | { | |
3181 | utab->guards = guardSet_levelUnion (utab->guards, | |
3182 | exprNode_getGuards (pred), | |
3183 | utab->lexlevel); | |
3184 | } | |
3185 | ||
3186 | DPRINTF (("Here.")); | |
3187 | } | |
3188 | ||
3189 | static void usymtab_fixCases (void) /*@modifies utab@*/ { | |
3190 | while (utab->kind == US_CBRANCH) | |
3191 | { | |
3192 | usymtab_quietPlainExitScope (); | |
3193 | } | |
3194 | ||
3195 | llassert (utab->kind != US_CBRANCH); | |
3196 | } | |
3197 | ||
3198 | void | |
3199 | usymtab_altBranch (/*@only@*/ guardSet guards) | |
3200 | /*@modifies utab@*/ | |
3201 | { | |
28bf4b0b | 3202 | usymtab t; |
616915dd | 3203 | usymtab parent = utab->env; |
3204 | ||
28bf4b0b | 3205 | t = usymtab_create (US_FBRANCH, utab, FALSE); |
3206 | ||
616915dd | 3207 | /* |
3208 | ** If we are in a case, need to close it. The C syntax | |
3209 | ** is very liberal, so this kludge is necessary. | |
3210 | */ | |
3211 | ||
3212 | usymtab_fixCases (); | |
3213 | ||
3214 | DPRINTF (("Current kind: %s", usymtab_unparseStack ())); | |
28bf4b0b | 3215 | |
616915dd | 3216 | llassert (utab->kind == US_TBRANCH); |
3217 | llassert (parent != GLOBAL_ENV); | |
28bf4b0b | 3218 | |
616915dd | 3219 | guardSet_free (t->guards); |
3220 | t->guards = guards; | |
28bf4b0b | 3221 | |
616915dd | 3222 | aliasTable_free (t->aliases); |
3223 | t->aliases = aliasTable_copy (parent->aliases); | |
28bf4b0b | 3224 | |
616915dd | 3225 | utab = t; |
3226 | } | |
3227 | ||
3228 | void | |
3229 | usymtab_allDefined (void) | |
3230 | /*@globals utab, globtab@*/ | |
3231 | { | |
3232 | int i; | |
3233 | ||
3234 | llassert (utab == globtab); | |
3235 | ||
3236 | for (i = 0; i < utab->nentries; i++) | |
3237 | { | |
3238 | uentry e = utab->entries[i]; | |
3239 | ||
3240 | if (uentry_isPriv (e)) | |
3241 | { | |
3242 | ; /* no need to define it */ | |
3243 | } | |
3244 | else | |
3245 | { | |
3246 | if (context_getFlag (FLG_SPECUNDECL)) | |
3247 | { | |
3248 | fileloc sloc = uentry_whereSpecified (e); | |
3249 | fileloc dloc = uentry_whereDeclared (e); | |
3250 | ||
3251 | if (fileloc_isDefined (sloc) | |
3252 | && !uentry_isFakeTag (e) | |
3253 | && !fileloc_isDefined (dloc)) | |
3254 | { | |
3255 | voptgenerror | |
3256 | (FLG_SPECUNDECL, | |
3257 | message ("%s %q specified but not declared", | |
3258 | ekind_capName (uentry_getKind (e)), | |
3259 | uentry_getName (e)), | |
3260 | sloc); | |
3261 | } | |
3262 | } | |
3263 | ||
3264 | if (!uentry_isCodeDefined (e)) | |
3265 | { | |
3266 | fileloc dloc = uentry_whereDeclared (e); | |
3267 | ||
28bf4b0b | 3268 | if (fileloc_isLib (dloc) || fileloc_isXHFile (dloc)) |
616915dd | 3269 | { |
3270 | ; | |
3271 | } | |
3272 | else if (fileloc_isDefined (dloc)) | |
3273 | { | |
3274 | if (!uentry_isAnyTag (e)) | |
3275 | { | |
3276 | if (fileloc_isUser (dloc)) | |
3277 | { | |
3278 | voptgenerror | |
3279 | (FLG_DECLUNDEF, | |
3280 | message ("%s %q declared but not defined", | |
3281 | ekind_capName (uentry_getKind (e)), | |
3282 | uentry_getName (e)), | |
3283 | dloc); | |
efd360a3 | 3284 | DPRINTF (("decl: %s", uentry_unparseFull (e))); |
616915dd | 3285 | } |
3286 | } | |
3287 | } | |
3288 | else | |
3289 | { | |
3290 | fileloc sloc = uentry_whereSpecified (e); | |
3291 | ||
3292 | if (fileloc_isDefined (sloc) | |
3293 | && !fileloc_isImport (sloc) | |
3294 | && !fileloc_isLib (sloc) | |
3295 | && !fileloc_isPreproc (sloc) | |
3296 | && !uentry_isFakeTag (e)) | |
3297 | { | |
3298 | if (uentry_isVariable (e) || uentry_isFunction (e)) | |
3299 | { | |
3300 | voptgenerror | |
3301 | (FLG_SPECUNDEF, | |
3302 | message ("%s %q specified but not declared or defined", | |
3303 | ekind_capName (uentry_getKind (e)), | |
3304 | uentry_getName (e)), | |
3305 | sloc); | |
3306 | } | |
3307 | else | |
3308 | { | |
3309 | voptgenerror | |
3310 | (FLG_SPECUNDEF, | |
3311 | message ("%s %q specified but not defined", | |
3312 | ekind_capName (uentry_getKind (e)), | |
3313 | uentry_getName (e)), | |
3314 | sloc); | |
3315 | } | |
3316 | } | |
3317 | } | |
3318 | } | |
3319 | } | |
3320 | } | |
3321 | } | |
3322 | ||
3323 | void usymtab_exportHeader (void) | |
3324 | /*@globals utab@*/ | |
3325 | { | |
3326 | int i; | |
3327 | ||
3328 | for (i = 0; i < utab->nentries; i++) | |
3329 | { | |
3330 | uentry ce = utab->entries[i]; | |
3331 | ||
3332 | if (!uentry_isDatatype (ce) | |
3333 | && !uentry_isAnyTag (ce) | |
3334 | && !uentry_isEitherConstant (ce) && !uentry_isStatic (ce) | |
3335 | && !uentry_isExternal (ce) | |
3336 | && !uentry_isForward (ce)) | |
3337 | { | |
3338 | fileloc fwhere = uentry_whereDeclared (ce); | |
3339 | ||
3340 | if (fileloc_isUndefined (fwhere) | |
3341 | && uentry_isFunction (ce)) | |
3342 | { | |
3343 | fwhere = uentry_whereDefined (ce); | |
3344 | } | |
3345 | ||
3346 | if (fileloc_isDefined (fwhere) | |
3347 | && !fileloc_isHeader (fwhere) | |
28bf4b0b | 3348 | && !fileloc_isXHFile (fwhere) |
616915dd | 3349 | && !(fileloc_isSpecialFile (fwhere) |
3350 | && !context_getFlag (FLG_UNUSEDSPECIAL))) | |
3351 | { | |
3352 | if (uentry_isVariable (ce)) | |
3353 | { | |
3354 | if (optgenerror | |
3355 | (FLG_EXPORTHEADERVAR, | |
3356 | message ("%s %q exported but not declared in header file", | |
3357 | ekind_capName (uentry_getKind (ce)), | |
3358 | uentry_getName (ce)), | |
3359 | fwhere)) | |
3360 | { | |
3361 | uentry_showDefSpecInfo (ce, fwhere); | |
3362 | } | |
3363 | } | |
3364 | else | |
3365 | { | |
3366 | if (!uentry_isIter (ce) | |
3367 | && !uentry_isEndIter (ce) | |
3368 | && !uentry_isExpandedMacro (ce)) | |
3369 | { | |
3370 | if (uentry_isFunction (ce) | |
3371 | && cstring_equalLit (uentry_rawName (ce), "main")) | |
3372 | { | |
3373 | ; /* no error for main */ | |
3374 | } | |
3375 | else | |
3376 | { | |
3377 | if (optgenerror | |
3378 | (FLG_EXPORTHEADER, | |
3379 | message ("%s %q exported but not declared " | |
3380 | "in header file", | |
3381 | ekind_capName (uentry_getKind (ce)), | |
3382 | uentry_getName (ce)), | |
3383 | fwhere)) | |
3384 | { | |
3385 | uentry_showDefSpecInfo (ce, fwhere); | |
3386 | } | |
3387 | } | |
3388 | } | |
3389 | } | |
3390 | } | |
3391 | } | |
3392 | } | |
3393 | } | |
3394 | ||
3395 | void usymtab_exportLocal (void) | |
3396 | /*@globals utab@*/ | |
3397 | { | |
3398 | int i; | |
616915dd | 3399 | |
3400 | for (i = 0; i < utab->nentries; i++) | |
3401 | { | |
3402 | uentry ce = utab->entries[i]; | |
616915dd | 3403 | |
3404 | if (!uentry_isDatatype (ce) && !uentry_isAnyTag (ce) | |
3405 | && !uentry_isEitherConstant (ce) | |
3406 | && !uentry_isIter (ce) | |
3407 | && !uentry_isEndIter (ce) | |
3408 | && !uentry_isExpandedMacro (ce) | |
3409 | && uentry_isUsed (ce)) | |
3410 | { | |
3411 | /* check static uses */ | |
3412 | filelocList fuses = uentry_getUses (ce); | |
3413 | fileloc mod = uentry_whereDefined (ce); | |
3414 | bool ok = filelocList_isEmpty (fuses); | |
3415 | fileloc fwhere = uentry_whereDeclared (ce); | |
3416 | ||
3417 | if (fileloc_isSpecialFile (fwhere) | |
3418 | && !context_getFlag (FLG_UNUSEDSPECIAL)) | |
3419 | { | |
3420 | ok = TRUE; /* no errors for special files */ | |
3421 | } | |
3422 | else | |
3423 | { | |
3424 | filelocList_elements (fuses, uloc) | |
3425 | { | |
3426 | if (fileloc_isUndefined (uloc) || !fileloc_sameModule (uloc, mod)) | |
3427 | { | |
3428 | ok = TRUE; | |
3429 | /*@innerbreak@*/ break; | |
3430 | } | |
3431 | } end_filelocList_elements; | |
3432 | } | |
3433 | ||
3434 | if (!ok) | |
3435 | { | |
3436 | if (optgenerror | |
3437 | (FLG_EXPORTLOCAL, | |
3438 | message ("%s exported but not used outside %s: %q", | |
3439 | ekind_capName (uentry_getKind (ce)), | |
3440 | fileloc_getBase (mod), | |
3441 | uentry_getName (ce)), | |
3442 | fwhere)) | |
3443 | { | |
3444 | uentry_showDefSpecInfo (ce, fwhere); | |
3445 | } | |
3446 | } | |
3447 | } | |
3448 | } | |
3449 | } | |
3450 | ||
3451 | void | |
3452 | usymtab_allUsed (void) | |
3453 | /*@globals utab@*/ | |
3454 | { | |
3455 | int i; | |
3456 | bool isFileStatic = usymtab_inFileScope (); | |
3457 | cstring last_file = cstring_undefined; | |
3458 | ||
3459 | for (i = 0; i < utab->nentries; i++) | |
3460 | { | |
3461 | bool hasError = FALSE; | |
3462 | uentry ce = utab->entries[i]; | |
3463 | fileloc fwhere = uentry_whereDeclared (ce); | |
3464 | ||
3465 | if (fileloc_isUndefined (fwhere)) | |
3466 | { | |
3467 | fwhere = uentry_whereDefined (ce); | |
3468 | } | |
3469 | ||
3470 | if (fileloc_isInvalid (fwhere) | |
3471 | || fileloc_isLib (fwhere) | |
3472 | || fileloc_isBuiltin (fwhere) | |
3473 | || ((fileloc_isSpecialFile (fwhere) | |
3474 | || fileloc_isSpecialFile (uentry_whereDefined (ce))) | |
3475 | && !context_getFlag (FLG_UNUSEDSPECIAL))) | |
3476 | { | |
3477 | ; | |
3478 | } | |
3479 | else if (!uentry_wasUsed (ce) && !uentry_isAnyTag (ce)) | |
3480 | { | |
3481 | cstring fname = fileloc_filename (fwhere); | |
3482 | ||
3483 | if (cstring_isUndefined (last_file)) | |
3484 | { | |
3485 | last_file = fname; | |
3486 | } | |
3487 | else if (cstring_equal (fname, last_file)) | |
3488 | { | |
3489 | } | |
3490 | else | |
3491 | { | |
3492 | cleanupMessages (); | |
3493 | last_file = fname; | |
3494 | } | |
3495 | ||
3496 | if (uentry_isParam (ce)) | |
3497 | { | |
3498 | if (context_inMacro ()) | |
3499 | { | |
3500 | sRef cref = uentry_getSref (ce); | |
3501 | ||
3502 | if (uentry_isYield (ce)) | |
3503 | { | |
3504 | ; /* no checks (for now) */ | |
3505 | } | |
3506 | else if (sRef_isSafe (cref)) | |
3507 | { | |
3508 | ; /* no error */ | |
3509 | } | |
3510 | else | |
3511 | { | |
3512 | if (uentry_hasRealName (ce)) | |
3513 | { | |
3514 | hasError = | |
3515 | optgenerror (FLG_MACROPARAMS, | |
3516 | message ("Macro parameter %q not used", | |
3517 | uentry_getName (ce)), | |
3518 | fwhere); | |
3519 | } | |
3520 | } | |
3521 | } | |
3522 | else | |
3523 | { | |
3524 | if (cstring_equalFree (uentry_getName (ce), | |
3525 | cstring_makeLiteral ("..."))) | |
3526 | { | |
3527 | ; | |
3528 | } | |
3529 | else | |
3530 | { | |
3531 | hasError = optgenerror (FLG_PARAMUNUSED, | |
3532 | message ("Parameter %q not used", | |
3533 | uentry_getName (ce)), | |
3534 | fwhere); | |
3535 | } | |
3536 | } | |
3537 | } /* isParam */ | |
3538 | else if (uentry_isFunction (ce) || uentry_isIter (ce)) | |
3539 | { | |
3540 | if (fileloc_isUser (fwhere)) | |
3541 | { | |
3542 | hasError = optgenerror | |
3543 | (FLG_FUNCUNUSED, | |
3544 | message ("%q %q declared but not used", | |
3545 | cstring_makeLiteral | |
3546 | (uentry_isIter (ce) ? "Iterator" | |
3547 | : (isFileStatic ? "File static function" : "Function")), | |
3548 | uentry_getName (ce)), | |
3549 | fwhere); | |
3550 | } | |
3551 | } | |
3552 | else if (uentry_isEndIter (ce)) | |
3553 | { | |
3554 | ; /* no error (already reported for iter */ | |
3555 | } | |
3556 | else if (uentry_isEnumConstant (ce)) | |
3557 | { | |
3558 | if (fileloc_isUser (fwhere)) | |
3559 | { | |
3560 | hasError = optgenerror | |
3561 | (FLG_ENUMMEMUNUSED, | |
3562 | message ("Enum member %q not used", | |
3563 | uentry_getName (ce)), | |
3564 | fwhere); | |
3565 | } | |
3566 | } | |
3567 | else if (uentry_isConstant (ce)) | |
3568 | { | |
3569 | if (fileloc_isUser (fwhere)) | |
3570 | { | |
3571 | hasError = optgenerror | |
3572 | (FLG_CONSTUNUSED, | |
3573 | message ("Constant %q declared but not used", | |
3574 | uentry_getName (ce)), | |
3575 | fwhere); | |
3576 | } | |
3577 | } | |
3578 | else if (uentry_isDatatype (ce)) | |
3579 | { | |
3580 | if (fileloc_isUser (fwhere)) | |
3581 | { | |
3582 | hasError = optgenerror | |
3583 | (FLG_TYPEUNUSED, | |
3584 | message ("Type %q declared but not used", | |
3585 | uentry_getName (ce)), | |
3586 | fwhere); | |
3587 | } | |
3588 | } | |
3589 | else if (!uentry_isRefParam (ce) && !uentry_isExpandedMacro (ce)) | |
3590 | { /* errors for ref params will be reported in the next scope */ | |
3591 | llassertprint (uentry_isVar (ce), | |
3592 | ("ce: %s", uentry_unparseFull (ce))); | |
3593 | ||
3594 | if (ctype_isFunction (uentry_getType (ce))) | |
3595 | { | |
3596 | if (fileloc_isUser (fwhere)) | |
3597 | { | |
3598 | hasError = optgenerror | |
3599 | (FLG_FUNCUNUSED, | |
3600 | message ("%q %q declared but not used", | |
3601 | cstring_makeLiteral | |
3602 | (isFileStatic ? "File static function" | |
3603 | : "Function"), | |
3604 | uentry_getName (ce)), | |
3605 | fwhere); | |
3606 | } | |
3607 | } | |
3608 | else | |
3609 | { | |
3610 | if (fileloc_isUser (fwhere)) | |
3611 | { | |
3612 | ||
3613 | ||
3614 | hasError = optgenerror | |
3615 | (FLG_VARUNUSED, | |
3616 | message ("%q %q declared but not used", | |
3617 | cstring_makeLiteral | |
3618 | (isFileStatic ? "File static variable" | |
3619 | : "Variable"), | |
3620 | uentry_getName (ce)), | |
3621 | fwhere); | |
3622 | } | |
3623 | } | |
3624 | } | |
3625 | else | |
3626 | { | |
3627 | ; /* no errors */ | |
3628 | } | |
3629 | } /* unused */ | |
28bf4b0b | 3630 | else if ((uentry_isDatatype (ce) || uentry_isAnyTag (ce))) |
616915dd | 3631 | { /* check all fields */ |
3632 | ctype ct = uentry_getRealType (ce); | |
3633 | ||
3634 | ||
3635 | while (ctype_isAP (ct)) | |
3636 | { | |
3637 | ct = ctype_getBaseType (ct); | |
3638 | } | |
3639 | ||
616915dd | 3640 | if (ctype_isSU (ct)) |
3641 | { | |
3642 | uentryList fields = ctype_getFields (ct); | |
3643 | ||
3644 | uentryList_elements (fields, field) | |
3645 | { | |
3646 | if (!uentry_isUsed (field)) | |
3647 | { | |
3648 | if (uentry_hasName (ce)) | |
3649 | { | |
3650 | hasError |= optgenerror | |
3651 | (FLG_FIELDUNUSED, | |
3652 | message ("Field %q of %s %q declared but not used", | |
3653 | uentry_getName (field), | |
3654 | cstring_makeLiteralTemp | |
3655 | (ctype_isStruct (ct) ? "structure" : "union"), | |
3656 | uentry_getName (ce)), | |
3657 | uentry_whereEarliest (field)); | |
3658 | } | |
3659 | else | |
3660 | { | |
28bf4b0b | 3661 | /* |
3662 | ** evans 2001-06-08 | |
3663 | ** Can't report these errors for unnamed structs. | |
3664 | ** No way to tell when there are multiple consistent | |
3665 | ** unnamed structure types. (Could go through table | |
3666 | ** and mark them all unused...) | |
3667 | ||
616915dd | 3668 | hasError |= optgenerror |
3669 | (FLG_FIELDUNUSED, | |
3670 | message ("Field %q of unnamed %s declared but not used", | |
3671 | uentry_getName (field), | |
3672 | cstring_makeLiteralTemp | |
3673 | (ctype_isStruct (ct) ? "structure" : "union")), | |
3674 | uentry_whereEarliest (field)); | |
28bf4b0b | 3675 | |
3676 | */ | |
616915dd | 3677 | } |
3678 | ||
3679 | uentry_setUsed (field, fileloc_undefined); | |
3680 | } | |
3681 | } end_uentryList_elements; | |
3682 | } | |
3683 | } | |
3684 | else | |
3685 | { | |
3686 | ; /* no errors */ | |
3687 | } | |
3688 | ||
3689 | if (hasError) | |
3690 | { | |
3691 | if (uentry_isParam (ce) && context_inMacro ()) | |
3692 | { | |
3693 | if (fileloc_isDefined (uentry_whereSpecified (ce))) | |
3694 | { | |
3695 | uentry_showWhereSpecified (ce); | |
3696 | } | |
3697 | } | |
3698 | else | |
3699 | { | |
3700 | uentry_showDefSpecInfo (ce, fwhere); | |
3701 | } | |
3702 | ||
3703 | uentry_setUsed (ce, fileloc_undefined); | |
3704 | } | |
3705 | } | |
3706 | } | |
3707 | ||
3708 | static void | |
3709 | checkGlobalReturn (uentry glob, sRef orig) | |
3710 | { | |
3711 | sRef sr = uentry_getSref (glob); | |
3712 | ||
b7b694d6 | 3713 | DPRINTF (("Check global return: %s / orig: %s / sr: %s", |
28bf4b0b | 3714 | uentry_unparseFull (glob), |
3715 | sRef_unparseFull (orig), | |
3716 | sRef_unparseFull (sr))); | |
3717 | ||
3718 | DPRINTF (("Is killed: %s", bool_unparse (sRef_isKilledGlob (orig)))); | |
3719 | ||
616915dd | 3720 | if (context_getFlag (FLG_GLOBSTATE)) |
3721 | { | |
28bf4b0b | 3722 | DPRINTF (("Is killed: %s", sRef_unparseFull (orig))); |
3723 | ||
616915dd | 3724 | if (sRef_isKilledGlob (orig)) |
3725 | { | |
3726 | if (sRef_isStateUndefined (sr) | |
3727 | || sRef_isUnuseable (sr) | |
3728 | || sRef_isStateUnknown (sr) | |
3729 | || sRef_isDead (sr)) | |
3730 | { | |
3731 | ; | |
3732 | } | |
3733 | else | |
3734 | { | |
3735 | ctype ct = ctype_realType (uentry_getType (glob)); | |
393e573f | 3736 | |
2e127cb8 | 3737 | DPRINTF (("Check global destroyed: %s", uentry_unparseFull (glob))); |
3738 | ||
616915dd | 3739 | if (ctype_isVisiblySharable (ct)) |
3740 | { | |
3741 | if (optgenerror | |
3742 | (FLG_GLOBSTATE, | |
3743 | message | |
28bf4b0b | 3744 | ("Killed global %q (type %s) not released before return", |
3745 | uentry_getName (glob), | |
3746 | ctype_unparse (ct)), | |
616915dd | 3747 | g_currentloc)) |
3748 | { | |
3749 | sRef_showStateInfo (sr); | |
28bf4b0b | 3750 | } |
616915dd | 3751 | } |
3752 | else | |
3753 | { | |
28bf4b0b | 3754 | sRef_protectDerivs (); |
2e127cb8 | 3755 | (void) transferChecks_globalDestroyed (sr, g_currentloc); |
616915dd | 3756 | sRef_clearProtectDerivs (); |
3757 | } | |
3758 | } | |
3759 | } | |
3760 | else | |
3761 | { | |
3762 | if (sRef_isStateUndefined (sr)) | |
3763 | { | |
3764 | if (optgenerror (FLG_GLOBSTATE, | |
3765 | message | |
3766 | ("Function returns with global %q undefined", | |
3767 | uentry_getName (glob)), | |
3768 | g_currentloc)) | |
3769 | { | |
3770 | sRef_showStateInfo (sr); | |
3771 | } | |
3772 | } | |
3773 | else | |
3774 | { | |
7ebcc5bb | 3775 | if (sRef_isDead (sr) || sRef_isKept (sr)) |
616915dd | 3776 | { |
3777 | if (optgenerror | |
3778 | (FLG_GLOBSTATE, | |
3779 | message ("Function returns with global %q " | |
7ebcc5bb | 3780 | "referencing %s storage", |
3781 | uentry_getName (glob), | |
3782 | cstring_makeLiteralTemp (sRef_isDead (sr) ? "released" : "kept")), | |
616915dd | 3783 | g_currentloc)) |
3784 | { | |
7ebcc5bb | 3785 | if (sRef_isKept (sr)) |
3786 | { | |
3787 | sRef_showAliasInfo (sr); | |
3788 | } | |
3789 | else | |
3790 | { | |
3791 | sRef_showStateInfo (sr); | |
3792 | } | |
3793 | ||
616915dd | 3794 | sRef_setDefState (sr, SS_UNKNOWN, fileloc_undefined); |
3795 | } | |
3796 | } | |
3797 | ||
28bf4b0b | 3798 | if (ctype_isRealPointer (uentry_getType (glob)) |
3799 | && sRef_possiblyNull (sr) | |
3800 | && !uentry_possiblyNull (glob)) | |
616915dd | 3801 | { |
3802 | if (optgenerror | |
3803 | (FLG_GLOBSTATE, | |
3804 | message ("Function returns with non-null global %q " | |
3805 | "referencing null storage", | |
3806 | uentry_getName (glob)), | |
3807 | g_currentloc)) | |
3808 | { | |
3809 | sRef_showNullInfo (sr); | |
3810 | } | |
3811 | } | |
3812 | else | |
3813 | { | |
393e573f | 3814 | DPRINTF (("Check transfer: %s", uentry_unparseFull (glob))); |
2e127cb8 | 3815 | transferChecks_globalReturn (glob); |
616915dd | 3816 | } |
3817 | } | |
3818 | } | |
3819 | } | |
3820 | } | |
3821 | ||
3822 | /* | |
3823 | ** remember: check alias globals | |
3824 | */ | |
3825 | ||
3826 | void usymtab_checkFinalScope (bool isReturn) | |
3827 | /*@globals utab@*/ | |
3828 | { | |
2e127cb8 | 3829 | bool mustFree = context_getFlag (FLG_MUSTFREEONLY) || context_getFlag (FLG_MUSTFREEFRESH); /*@i423 remove this mustFree */ |
616915dd | 3830 | bool mustDefine = context_getFlag (FLG_MUSTDEFINE); |
3831 | /* bool mustNotAlias = context_getFlag (FLG_MUSTNOTALIAS); */ | |
3832 | sRefSet checked = sRefSet_new (); | |
3833 | usymtab stab = utab; | |
3834 | int i; | |
3835 | ||
3836 | /* | |
3837 | ** need to check all scopes out to function parameters. | |
3838 | */ | |
3839 | ||
3840 | do | |
3841 | { | |
3842 | for (i = 0; i < stab->nentries; i++) | |
3843 | { | |
3844 | uentry ce = stab->entries[i]; | |
3845 | sRef sr = uentry_getSref (ce); | |
3846 | sRef rb = sRef_getRootBase (sr); | |
28bf4b0b | 3847 | valueTable tvalues; |
616915dd | 3848 | |
28bf4b0b | 3849 | /* |
3850 | ** Shouldn't check if shadow checked in deeper scope: | |
3851 | */ | |
3852 | ||
3853 | if (stab != utab) | |
3854 | { | |
3855 | uentry oue = usymtab_lookupQuietNoAlt (utab, uentry_observeRealName (ce)); | |
3856 | ||
3857 | if (!uentry_sameObject (ce, oue)) | |
3858 | { | |
3859 | DPRINTF (("Skipping outer entry: %s / %s", uentry_unparseFull (ce), | |
3860 | uentry_unparseFull (oue))); | |
3861 | /*@i32 what if it is one an alternate branch? */ | |
3862 | /*@innercontinue@*/ continue; | |
3863 | } | |
3864 | } | |
3e3ec469 | 3865 | |
28bf4b0b | 3866 | DPRINTF (("Here check final scope: %s", uentry_unparseFull (ce))); |
3867 | ||
616915dd | 3868 | if (ctype_isFunction (uentry_getType (ce))) |
3869 | { | |
3870 | /*@innercontinue@*/ continue; | |
3871 | } | |
3872 | ||
28bf4b0b | 3873 | if (uentry_isAnyParam (ce) |
3874 | || uentry_isRefParam (ce) | |
3875 | || sRef_isFileOrGlobalScope (rb)) | |
3876 | { | |
3877 | /* Don't do the loseref check...but should check state! */ | |
3e3ec469 | 3878 | DPRINTF (("Skipping check 1")); |
28bf4b0b | 3879 | } |
3880 | else if (sRef_isDefinitelyNull (sr) | |
3881 | || usymtab_isDefinitelyNull (sr)) | |
3882 | { | |
3883 | /* | |
3884 | ** No state reference errors for definitely null references. | |
3885 | */ | |
3e3ec469 | 3886 | |
3887 | DPRINTF (("Skipping check 2")); | |
28bf4b0b | 3888 | } |
3889 | else | |
3890 | { | |
3891 | DPRINTF (("Lose ref: %s / %s", uentry_unparse (ce), | |
3892 | sRef_unparseFull (sr))); | |
3893 | ||
3894 | tvalues = sRef_getValueTable (sr); | |
3895 | ||
3896 | valueTable_elements (tvalues, fkey, fval) { | |
3897 | metaStateInfo minfo; | |
3898 | cstring msg = cstring_undefined; | |
3899 | int nval; | |
3900 | ||
3901 | minfo = context_lookupMetaStateInfo (fkey); | |
3902 | llassert (metaStateInfo_isDefined (minfo)); | |
3903 | ||
15b3d2b2 | 3904 | if (stateValue_isError (fval) |
3905 | || sRef_isStateUndefined (sr)) /* No errors for undefined state */ | |
28bf4b0b | 3906 | { |
3e3ec469 | 3907 | DPRINTF (("Skipping check 3")); |
28bf4b0b | 3908 | } |
3909 | else | |
3910 | { | |
3911 | DPRINTF (("Check: %s / %s / %s", fkey, | |
3912 | metaStateInfo_unparse (minfo), | |
3913 | stateValue_unparse (fval))); | |
3914 | ||
3915 | minfo = context_lookupMetaStateInfo (fkey); | |
3916 | ||
3917 | nval = stateCombinationTable_lookupLoseReference | |
3918 | (metaStateInfo_getTransferTable (minfo), | |
3919 | stateValue_getValue (fval), &msg); | |
3920 | ||
3921 | if (cstring_isDefined (msg)) | |
3922 | { | |
3923 | /*@i32 print extra info for assignments@*/ | |
3924 | DPRINTF (("From: %s", sRef_unparseFull (sr))); | |
3925 | DPRINTF (("Null? %s / %s", | |
3926 | bool_unparse (sRef_isDefinitelyNull (sr)), | |
3927 | bool_unparse (usymtab_isGuarded (sr)))); | |
3928 | ||
3929 | if (optgenerror | |
3930 | (FLG_STATETRANSFER, | |
3931 | message | |
2c88d156 | 3932 | ("%s loses reference %q in invalid state %q (%s)", |
28bf4b0b | 3933 | cstring_makeLiteralTemp (isReturn ? "Return" : "Scope exit"), |
3934 | uentry_getName (ce), | |
2c88d156 | 3935 | stateValue_unparseValue (fval, minfo), |
28bf4b0b | 3936 | msg), |
3937 | g_currentloc)) | |
3938 | { | |
3939 | stateValue_show (fval, minfo); | |
3940 | } | |
3941 | else | |
3942 | { | |
3943 | DPRINTF (("Suppressed transfer error: %s", msg)); | |
3944 | } | |
3945 | } | |
3946 | } | |
3947 | } end_valueTable_elements; | |
3948 | } | |
3949 | ||
3e3ec469 | 3950 | DPRINTF (("Here 1")); |
3951 | ||
616915dd | 3952 | if (mustFree) |
3953 | { | |
3e3ec469 | 3954 | DPRINTF (("Check mustfree entry: %s", uentry_unparseFull (ce))); |
28bf4b0b | 3955 | |
3956 | if (!sRefSet_member (checked, sr) && !sRef_isFileOrGlobalScope (rb)) | |
616915dd | 3957 | { |
3958 | if (ctype_isRealSU (uentry_getType (ce)) | |
3959 | && !uentry_isAnyParam (ce) | |
3960 | && !uentry_isRefParam (ce) | |
3961 | && !uentry_isStatic (ce) | |
3962 | && !sRef_isDependent (sr) | |
3963 | && !sRef_isOwned (sr)) | |
3964 | { | |
3965 | sRefSet als = usymtab_allAliases (sr); | |
616915dd | 3966 | |
3967 | if (sRefSet_isEmpty (als)) | |
3968 | { | |
2e127cb8 | 3969 | transferChecks_localDestroyed (sr, g_currentloc); |
616915dd | 3970 | } |
3971 | else | |
3972 | { | |
3973 | /* aliased, no problem */ ; | |
3974 | } | |
3975 | ||
3976 | sRefSet_free (als); | |
3977 | } | |
3978 | else if | |
3979 | (!uentry_isStatic (ce) | |
3980 | && ((sRef_isNewRef (sr)) | |
3981 | || (((sRef_isOnly (sr) || sRef_isFresh (sr) | |
3982 | || sRef_isKeep (sr) || sRef_isOwned (sr)) | |
3983 | && !sRef_isDead (sr)) | |
3984 | && (!sRef_definitelyNull (sr)) | |
28bf4b0b | 3985 | && (!usymtab_isDefinitelyNull (sr))))) |
616915dd | 3986 | { |
3987 | bool hasError = TRUE; | |
3988 | ||
28bf4b0b | 3989 | DPRINTF (("Checking: %s", sRef_unparseFull (sr))); |
3990 | ||
616915dd | 3991 | /* |
3992 | ** If its a scope exit, check if there is an alias. | |
3993 | ** If so, make it only. If not, there is an error. | |
3994 | */ | |
3995 | ||
3996 | if (!isReturn) | |
3997 | { | |
2e127cb8 | 3998 | if (transferChecks_canLoseReference (sr, g_currentloc)) |
616915dd | 3999 | { |
28bf4b0b | 4000 | DPRINTF (("Can lose!")); |
616915dd | 4001 | hasError = FALSE; |
4002 | } | |
4003 | } | |
4004 | ||
4005 | if (hasError) | |
4006 | { | |
4007 | if (sRef_hasLastReference (sr)) | |
4008 | { | |
4009 | sRef ar = sRef_getAliasInfoRef (sr); | |
4010 | ||
4011 | if (optgenerror | |
2e127cb8 | 4012 | (sRef_isFresh (ar) ? FLG_MUSTFREEFRESH : FLG_MUSTFREEONLY, |
616915dd | 4013 | message |
4014 | ("Last reference %q to %s storage %qnot %q before %q", | |
4015 | sRef_unparse (sr), | |
4016 | alkind_unparse (sRef_getAliasKind (sr)), | |
4017 | sRef_unparseOpt (ar), | |
4018 | cstring_makeLiteral (sRef_isKeep (sr) | |
4019 | ? "transferred" : "released"), | |
4020 | cstring_makeLiteral (isReturn | |
4021 | ? "return" : "scope exit")), | |
4022 | g_currentloc)) | |
4023 | { | |
4024 | sRef_showRefLost (sr); | |
4025 | } | |
4026 | } | |
4027 | else if (sRef_isNewRef (sr)) | |
4028 | { | |
4029 | if (optgenerror | |
2e127cb8 | 4030 | (sRef_isFresh (sr) ? FLG_MUSTFREEFRESH : FLG_MUSTFREEONLY, |
616915dd | 4031 | message |
4032 | ("%q %q not released before %q", | |
4033 | cstring_makeLiteral | |
4034 | (alkind_isKillRef (sRef_getOrigAliasKind (sr)) | |
4035 | ? "Kill reference parameter" : "New reference"), | |
4036 | uentry_getName (ce), | |
4037 | cstring_makeLiteral (isReturn | |
4038 | ? "return" : "scope exit")), | |
4039 | g_currentloc)) | |
4040 | { | |
4041 | sRef_showAliasInfo (sr); | |
4042 | } | |
4043 | } | |
4044 | else | |
4045 | { | |
4046 | if (ctype_isRealSU (sRef_getType (sr))) | |
4047 | { | |
2e127cb8 | 4048 | transferChecks_structDestroyed (sr, g_currentloc); |
616915dd | 4049 | } |
4050 | else | |
4051 | { | |
28bf4b0b | 4052 | DPRINTF (("Here we are: %s", sRef_unparseFull (sr))); |
4053 | ||
616915dd | 4054 | if (optgenerror |
2e127cb8 | 4055 | (sRef_isFresh (sr) ? FLG_MUSTFREEFRESH : FLG_MUSTFREEONLY, |
616915dd | 4056 | message |
4057 | ("%s storage %q not %q before %q", | |
4058 | alkind_capName (sRef_getAliasKind (sr)), | |
4059 | uentry_getName (ce), | |
4060 | cstring_makeLiteral (sRef_isKeep (sr) | |
4061 | ? "transferred" : "released"), | |
4062 | cstring_makeLiteral (isReturn | |
4063 | ? "return" : "scope exit")), | |
4064 | g_currentloc)) | |
4065 | { | |
4066 | sRef_showAliasInfo (sr); | |
28bf4b0b | 4067 | DPRINTF (("Storage: %s", sRef_unparseFull (sr))); |
616915dd | 4068 | } |
4069 | } | |
4070 | } | |
4071 | } | |
4072 | } | |
4073 | else | |
4074 | { | |
4075 | ; | |
4076 | } | |
4077 | } | |
3e3ec469 | 4078 | } |
4079 | ||
a956d444 | 4080 | if (mustDefine && uentry_isOut (ce)) |
3e3ec469 | 4081 | { |
a956d444 | 4082 | /* No error if its dead (either only or error already reported */ |
4083 | if (!sRef_isReallyDefined (sr) && !sRef_isDead (sr)) | |
616915dd | 4084 | { |
3e3ec469 | 4085 | voptgenerror |
4086 | (FLG_MUSTDEFINE, | |
4087 | message ("Out storage %q not defined before %q", | |
4088 | uentry_getName (ce), | |
4089 | cstring_makeLiteral | |
4090 | (isReturn ? "return" : "scope exit")), | |
4091 | g_currentloc); | |
2e127cb8 | 4092 | |
4093 | DPRINTF (("sr: %s", sRef_unparseFull (sr))); | |
616915dd | 4094 | } |
3e3ec469 | 4095 | } |
4096 | ||
4097 | /* | |
4098 | ** also check state is okay | |
4099 | */ | |
4100 | ||
4101 | if (usymtab_lexicalLevel () > functionScope | |
4102 | && uentry_isVariable (ce) | |
4103 | && (sRef_isLocalVar (sr) | |
4104 | && (sRef_isDependent (sr) || sRef_isLocalState (sr)))) | |
4105 | { | |
4106 | sRefSet ab = usymtab_aliasedBy (sr); | |
616915dd | 4107 | |
3e3ec469 | 4108 | /* should do something more efficient here */ |
28bf4b0b | 4109 | |
3e3ec469 | 4110 | if (sRefSet_isEmpty (ab)) |
616915dd | 4111 | { |
3e3ec469 | 4112 | /* and no local ref */ |
4113 | DPRINTF (("Check lose ref: %s", uentry_unparseFull (ce))); | |
2e127cb8 | 4114 | transferChecks_loseReference (ce); |
616915dd | 4115 | } |
3e3ec469 | 4116 | else |
616915dd | 4117 | { |
4118 | ; | |
4119 | } | |
4120 | ||
3e3ec469 | 4121 | sRefSet_free (ab); |
616915dd | 4122 | } |
3e3ec469 | 4123 | else |
4124 | { | |
4125 | ; | |
4126 | } | |
4127 | ||
4128 | checked = sRefSet_insert (checked, sr); | |
616915dd | 4129 | } |
28bf4b0b | 4130 | |
616915dd | 4131 | llassert (usymtab_isDefined (stab->env)); |
4132 | ||
4133 | if (usymtab_isBranch (stab)) | |
4134 | { | |
4135 | stab = usymtab_dropEnv (stab); | |
4136 | } | |
4137 | else | |
4138 | { | |
4139 | stab = stab->env; | |
4140 | } | |
28bf4b0b | 4141 | |
616915dd | 4142 | llassert (stab != usymtab_undefined); |
4143 | } while (isReturn && (stab->lexlevel >= paramsScope)); | |
28bf4b0b | 4144 | |
4145 | sRefSet_free (checked); | |
4146 | ||
616915dd | 4147 | /* |
4148 | ** for returns: | |
4149 | ** all globals are appropriately defined | |
4150 | ** all parameters are appropriately defined | |
4151 | ** special clauses are followed | |
4152 | */ | |
4153 | ||
4154 | if (isReturn || (utab->lexlevel == paramsScope)) | |
4155 | { | |
4156 | uentry fcn = context_getHeader (); | |
4157 | uentryList params = context_getParams (); | |
4158 | globSet uglobs = context_getUsedGlobs (); | |
4159 | globSet sglobs = context_getGlobs (); | |
616915dd | 4160 | |
4161 | if (isReturn && context_maybeSet (FLG_GLOBALIAS)) | |
4162 | { | |
4163 | aliasTable_checkGlobs (utab->aliases); | |
4164 | } | |
4165 | ||
4166 | /* | |
28bf4b0b | 4167 | ** state clauses (ensures, defines, sets, allocates, releases) |
616915dd | 4168 | */ |
28bf4b0b | 4169 | |
4170 | if (uentry_hasStateClauseList (fcn)) | |
616915dd | 4171 | { |
28bf4b0b | 4172 | stateClauseList clauses = uentry_getStateClauseList (fcn); |
616915dd | 4173 | |
28bf4b0b | 4174 | stateClauseList_elements (clauses, cl) |
616915dd | 4175 | { |
28bf4b0b | 4176 | if (stateClause_isAfter (cl) && !stateClause_isGlobal (cl)) |
4177 | { | |
4178 | if (stateClause_setsMetaState (cl)) | |
616915dd | 4179 | { |
28bf4b0b | 4180 | sRefSet rfs = stateClause_getRefs (cl); |
4181 | qual q = stateClause_getMetaQual (cl); | |
4182 | annotationInfo ainfo = qual_getAnnotationInfo (q); | |
4183 | metaStateInfo minfo = annotationInfo_getState (ainfo); | |
4184 | cstring key = metaStateInfo_getName (minfo); | |
4185 | int mvalue = annotationInfo_getValue (ainfo); | |
4186 | ||
4187 | DPRINTF (("Post meta state clause: %s", stateClause_unparse (cl))); | |
4188 | ||
4189 | sRefSet_elements (rfs, el) | |
616915dd | 4190 | { |
28bf4b0b | 4191 | sRef base = sRef_getRootBase (el); |
616915dd | 4192 | |
28bf4b0b | 4193 | if (sRef_isResult (base)) |
4194 | { | |
4195 | /* | |
4196 | ** This is checked for return transfers. | |
4197 | */ | |
4198 | ; | |
4199 | } | |
4200 | else if (sRef_isParam (base) || sRef_isGlobalMarker (base)) | |
616915dd | 4201 | { |
28bf4b0b | 4202 | sRef sr = sRef_updateSref (base); |
4203 | sr = sRef_fixBase (el, sr); | |
4204 | ||
4205 | if (!sRef_checkMetaStateValue (sr, key, mvalue)) | |
616915dd | 4206 | { |
28bf4b0b | 4207 | if (optgenerror |
4208 | (FLG_STATETRANSFER, | |
4209 | message | |
2c88d156 | 4210 | ("Ensures clause not satisfied%q (state is %q): %q", |
28bf4b0b | 4211 | sRef_isGlobalMarker (sr) |
4212 | ? message ("") | |
4213 | : message (" by %q", sRef_unparse (sr)), | |
4214 | stateValue_unparseValue (sRef_getMetaStateValue (sr, key), | |
4215 | minfo), | |
4216 | stateClause_unparse (cl)), | |
4217 | g_currentloc)) | |
616915dd | 4218 | { |
28bf4b0b | 4219 | sRef_showMetaStateInfo (sr, key); |
4220 | } | |
4221 | } | |
616915dd | 4222 | } |
28bf4b0b | 4223 | else |
4224 | { | |
4225 | if (sRef_isMeaningful (el)) | |
4226 | { | |
4227 | BADBRANCH; | |
4228 | } | |
4229 | } | |
4230 | } end_sRefSet_elements ; | |
4231 | } | |
4232 | else | |
4233 | { | |
4234 | /* evs - 2000 07 10 - added this */ | |
4235 | sRefTest tst = stateClause_getPostTestFunction (cl); | |
4236 | sRefSet rfs = stateClause_getRefs (cl); | |
4237 | ||
4238 | sRefSet_elements (rfs, el) | |
616915dd | 4239 | { |
28bf4b0b | 4240 | sRef base = sRef_getRootBase (el); |
4241 | ||
4242 | if (sRef_isResult (base)) | |
616915dd | 4243 | { |
28bf4b0b | 4244 | /* |
4245 | ** This is checked for return transfers. | |
4246 | */ | |
4247 | ||
4248 | ; | |
616915dd | 4249 | } |
28bf4b0b | 4250 | else if (sRef_isParam (base)) |
4251 | { | |
4252 | sRef sr = sRef_updateSref (base); | |
4253 | sr = sRef_fixBase (el, sr); | |
4254 | ||
4255 | if (tst != NULL && !tst (sr)) | |
4256 | { | |
4257 | if (optgenerror | |
4258 | (stateClause_postErrorCode (cl), | |
4259 | message ("%s storage %qcorresponds to " | |
4260 | "storage listed in %q clause", | |
4261 | stateClause_postErrorString (cl, sr), | |
4262 | sRef_unparseOpt (sr), | |
4263 | stateClause_unparseKind (cl)), | |
4264 | g_currentloc)) | |
4265 | { | |
4266 | sRefShower ss = stateClause_getPostTestShower (cl); | |
4267 | ||
4268 | if (ss != NULL) | |
4269 | { | |
4270 | ss (sr); | |
4271 | } | |
1d239d69 | 4272 | |
3120b462 | 4273 | DPRINTF (("Storage: %s", sRef_unparseFull (sr))); |
28bf4b0b | 4274 | } |
4275 | } | |
4276 | } | |
4277 | else | |
4278 | { | |
4279 | if (sRef_isMeaningful (el)) | |
4280 | { | |
4281 | BADBRANCH; | |
4282 | } | |
4283 | } | |
4284 | } end_sRefSet_elements ; | |
4285 | } | |
616915dd | 4286 | } |
28bf4b0b | 4287 | } end_stateClauseList_elements ; |
616915dd | 4288 | } |
4289 | ||
4290 | /* | |
4291 | ** check parameters on return | |
4292 | */ | |
4293 | ||
4294 | uentryList_elements (params, arg) | |
4295 | { | |
4296 | if (!uentry_isElipsisMarker (arg)) | |
4297 | { | |
4298 | ctype rt = ctype_realType (uentry_getType (arg)); | |
4299 | ||
4300 | if (ctype_isMutable (rt) || ctype_isSU (rt)) | |
4301 | { | |
4302 | uentry param = usymtab_lookupQuiet (utab, uentry_rawName (arg)); | |
28bf4b0b | 4303 | DPRINTF (("Check param return: %s", uentry_unparseFull (param))); |
2e127cb8 | 4304 | transferChecks_paramReturn (param); |
616915dd | 4305 | } |
4306 | } | |
4307 | } end_uentryList_elements; | |
4308 | ||
28bf4b0b | 4309 | DPRINTF (("Check global return: %s", |
4310 | globSet_unparse (sglobs))); | |
4311 | ||
616915dd | 4312 | globSet_allElements (sglobs, el) |
4313 | { | |
28bf4b0b | 4314 | sRef orig = el; /*! sRef_updateSref (el); */ /*!!!*/ |
616915dd | 4315 | uentry current = sRef_getUentry (el); |
4316 | ||
28bf4b0b | 4317 | DPRINTF (("Check global return: %s / %s", sRef_unparseFull (el), |
4318 | uentry_unparseFull (current))); | |
4319 | ||
616915dd | 4320 | if (uentry_isVariable (current) && !uentry_isRealFunction (current)) |
4321 | { | |
28bf4b0b | 4322 | checkGlobalReturn (current, orig); |
616915dd | 4323 | } |
4324 | } end_globSet_allElements; | |
4325 | ||
4326 | globSet_allElements (uglobs, el) | |
4327 | { | |
4328 | if (!globSet_member (sglobs, el)) | |
4329 | { | |
4330 | uentry current = sRef_getUentry (el); | |
4331 | ||
616915dd | 4332 | if (uentry_isVariable (current) |
4333 | && !uentry_isRealFunction (current)) | |
4334 | { | |
4335 | checkGlobalReturn (current, sRef_undefined); | |
4336 | } | |
4337 | } | |
4338 | } end_globSet_allElements; | |
28bf4b0b | 4339 | } |
4340 | } | |
616915dd | 4341 | |
4342 | void | |
4343 | usymtab_quietExitScope (fileloc loc) | |
4344 | /*@globals utab, globtab, filetab; @*/ | |
4345 | /*@modifies utab@*/ | |
4346 | { | |
4347 | usymtab t = utab->env; | |
4348 | ||
6fcd0b1e | 4349 | DPRINTF (("Quiet exit scope [%p]", utab)); |
4350 | ||
616915dd | 4351 | if (utab->reftable != NULL) |
4352 | { | |
4353 | int i; | |
4354 | ||
4355 | for (i = 0; i < utab->nentries; i++) | |
4356 | { | |
4357 | uentry current = utab->entries[i]; | |
4358 | uentry old = usymtab_lookupAux (t, uentry_rawName (current)); | |
4359 | ||
4360 | uentry_mergeState (old, current, loc, FALSE, FALSE, FALSE, NOCLAUSE); | |
4361 | } | |
4362 | } | |
4363 | ||
4364 | llassert (t != NULL); | |
4365 | ||
4366 | if (t->lexlevel > paramsScope) | |
4367 | { | |
4368 | t->guards = guardSet_levelUnion (t->guards, utab->guards, t->lexlevel); | |
4369 | t->aliases = aliasTable_levelUnionSeq (t->aliases, utab->aliases, | |
4370 | t->lexlevel); | |
4371 | utab->aliases = aliasTable_undefined; | |
4372 | } | |
4373 | ||
4374 | t->mustBreak = utab->mustBreak; | |
4375 | t->exitCode = utab->exitCode; | |
4376 | ||
6fcd0b1e | 4377 | DPRINTF (("Free level [%p]", utab)); |
616915dd | 4378 | usymtab_freeLevel (utab); |
4379 | ||
4380 | utab = t; | |
6483a926 | 4381 | |
4382 | # ifdef DEBUGSPLINT | |
4383 | usymtab_checkAllValid (); | |
4384 | # endif | |
616915dd | 4385 | } |
4386 | ||
4387 | /* | |
4388 | ** Exit a scope with no checking, lose alias states. | |
4389 | ** (When should this be used?) | |
4390 | */ | |
4391 | ||
4392 | void usymtab_quietPlainExitScope (void) | |
4393 | /*@globals utab, globtab, filetab@*/ | |
4394 | /*@modifies utab@*/ | |
4395 | { | |
4396 | usymtab t = utab->env; | |
4397 | ||
4398 | llassert (t != NULL); | |
4399 | llassert (NOALIAS (utab->aliases, t->aliases)); | |
4400 | usymtab_freeLevel (utab); | |
4401 | utab = t; | |
4402 | } | |
4403 | ||
4404 | void usymtab_exitScope (exprNode expr) | |
4405 | /*@globals utab, filetab, globtab@*/ | |
4406 | /*@modifies utab, globtab@*/ | |
4407 | { | |
4408 | usymtab ctab = usymtab_undefined; | |
4409 | usymtab lctab = usymtab_undefined; | |
4410 | bool mustReturn = exprNode_mustEscape (expr); | |
28bf4b0b | 4411 | |
6fcd0b1e | 4412 | DPRINTF (("Exit scope [%p]", utab)); |
28bf4b0b | 4413 | |
616915dd | 4414 | if (utab->kind == US_CBRANCH) |
4415 | { | |
4416 | /* | |
4417 | ** save the case branches, remove the first non-cbranch | |
4418 | */ | |
4419 | ||
4420 | ctab = utab; | |
4421 | ||
4422 | while (utab->kind == US_CBRANCH) | |
4423 | { | |
4424 | lctab = utab; | |
4425 | utab = utab->env; | |
4426 | llassert (utab != GLOBAL_ENV); | |
4427 | } | |
4428 | } | |
4429 | ||
4430 | if (utab->kind == US_TBRANCH || utab->kind == US_FBRANCH | |
6483a926 | 4431 | || utab->kind == US_CBRANCH || utab->kind == US_SWITCH) |
4432 | { | |
4433 | if (context_inMacro ()) | |
616915dd | 4434 | { |
6483a926 | 4435 | /* evs 2000-07-25 */ |
4436 | /* Unparseable macro may end inside nested scope. Deal with it. */ | |
4437 | ||
4438 | llerror (FLG_SYNTAX, | |
4439 | message ("Problem parsing macro body of %s (unbalanced scopes). " | |
4440 | "Attempting to recover, recommend /*@notfunction@*/ before " | |
4441 | "macro definition.", | |
4442 | context_inFunctionName ())); | |
4443 | ||
4444 | while (utab->kind == US_TBRANCH | |
4445 | || utab->kind == US_FBRANCH | |
4446 | || utab->kind == US_CBRANCH | |
4447 | || utab->kind == US_SWITCH) | |
4448 | { | |
4449 | utab = utab->env; | |
4450 | llassert (utab != GLOBAL_ENV); | |
4451 | } | |
4452 | } else | |
4453 | { | |
4454 | llcontbug (message ("exitScope: in branch: %q", usymtab_unparseStack ())); | |
4455 | /*@-branchstate@*/ | |
4456 | } /*@=branchstate@*/ | |
4457 | } | |
4458 | ||
616915dd | 4459 | /* |
4460 | ** check all variables in scope were used | |
4461 | */ | |
4462 | ||
4463 | /* | |
4464 | ** bogus errors if this is the normal inside a switch, | |
4465 | ** since cases have not been merged yet. Should probably | |
4466 | ** still check this, but I'm too lazy at the moment... | |
4467 | */ | |
4468 | ||
4469 | llassertfatal (utab->env != GLOBAL_ENV); | |
4470 | ||
4471 | if (utab->env->kind != US_SWITCH) | |
4472 | { | |
4473 | usymtab_allUsed (); | |
4474 | } | |
4475 | ||
4476 | /* | |
4477 | ** check aliasing: all only params are released (dead) | |
4478 | ** definition: all out params are defined, all modified params | |
4479 | ** are completely defined | |
4480 | ** | |
4481 | ** NOTE: note for exiting paramsScope, since checkReturn should be | |
4482 | ** called first. | |
4483 | */ | |
6483a926 | 4484 | |
616915dd | 4485 | if (!mustReturn && (usymtab_lexicalLevel () > functionScope)) |
4486 | { | |
4487 | /* | |
4488 | ** should only call this is end of scope is reachable... | |
4489 | */ | |
4490 | ||
4491 | usymtab_checkFinalScope (FALSE); | |
4492 | } | |
4493 | ||
4494 | if (usymtab_lexicalLevel () == paramsScope && context_inFunctionLike ()) | |
4495 | { | |
4496 | /* | |
4497 | ** leaving a function, need to fix up globals | |
4498 | */ | |
4499 | ||
4500 | uentryList params = context_getParams (); | |
4501 | globSet globs = context_getUsedGlobs (); | |
4502 | ||
616915dd | 4503 | uentryList_elements (params, ue) |
4504 | { | |
4505 | uentry_fixupSref (ue); | |
4506 | } end_uentryList_elements; | |
4507 | ||
4508 | clearFunctionTypes (); | |
4509 | ||
6483a926 | 4510 | DPRINTF (("Fixing up globals: %s", globSet_unparse (globs))); |
4511 | ||
616915dd | 4512 | globSet_allElements (globs, el) |
4513 | { | |
6483a926 | 4514 | DPRINTF (("Fix: %s", sRef_unparseDebug (el))); |
4515 | ||
616915dd | 4516 | if (sRef_isCvar (el)) |
4517 | { | |
4518 | uentry current; | |
4519 | int index = sRef_getScopeIndex (el); | |
4520 | ||
4521 | if (sRef_isFileStatic (el)) | |
4522 | { | |
4523 | llassert (usymtab_isDefined (filetab)); | |
4524 | current = usymtab_fetchIndex (filetab, index); | |
4525 | } | |
4526 | else | |
4527 | { | |
4528 | current = usymtab_fetchIndex (globtab, index); | |
4529 | } | |
4530 | ||
4531 | if (uentry_isVariable (current)) | |
4532 | { | |
6483a926 | 4533 | DPRINTF (("Fixup: %s", uentry_unparse (current))); |
616915dd | 4534 | uentry_fixupSref (current); |
4535 | } | |
4536 | else | |
4537 | { | |
6483a926 | 4538 | DPRINTF (("Clear: %s", uentry_getSref (current))); |
616915dd | 4539 | sRef_clearDerived (uentry_getSref (current)); |
4540 | } | |
4541 | } | |
6483a926 | 4542 | |
4543 | sRef_clearDerived (el); /* evans 2002-03-14 - this is the likely source of many crashes! */ | |
616915dd | 4544 | } end_globSet_allElements; |
4545 | } | |
4546 | ||
4547 | usymtab_quietExitScope (exprNode_loc (expr)); | |
4548 | ||
4549 | if (lctab != usymtab_undefined) | |
4550 | { | |
4551 | /*@i@*/ lctab->env = utab; | |
4552 | /*@i@*/ utab = ctab; | |
4553 | /*@-branchstate@*/ } /*@=branchstate@*/ | |
146e25eb | 4554 | /*@-globstate@*/ |
6483a926 | 4555 | |
4556 | ||
4557 | # ifdef DEBUGSPLINT | |
4558 | usymtab_checkAllValid (); | |
4559 | # endif | |
146e25eb | 4560 | /*@i523@*/ } |
616915dd | 4561 | /*@=globstate@*/ |
4562 | ||
4563 | /* | |
4564 | ** yikes! don't let the '170 kids see this one... | |
4565 | */ | |
4566 | ||
4567 | int | |
4568 | uentry_directParamNo (uentry ue) | |
4569 | { | |
4570 | if (uentry_isVar (ue)) | |
4571 | { | |
4572 | sRef sr = uentry_getSref (ue); | |
4573 | ||
4574 | if (sRef_lexLevel (sr) == functionScope) | |
4575 | { | |
abd7f895 | 4576 | int index = sRef_getScopeIndex (sr); |
616915dd | 4577 | |
4578 | if (index < uentryList_size (context_getParams ())) | |
4579 | { | |
4580 | return index; | |
4581 | } | |
4582 | } | |
4583 | } | |
4584 | return -1; | |
4585 | } | |
4586 | ||
4587 | /*@dependent@*/ /*@exposed@*/ uentry | |
4588 | usymtab_getParam (int paramno) | |
4589 | /*@globals utab@*/ | |
4590 | { | |
4591 | /* | |
4592 | ** requires in a function context (checked) | |
4593 | ** | |
4594 | ** depends on no nested functions --- the function | |
4595 | ** parameters are ALWAYS one scope inside the global scope | |
4596 | ** and entered in order! | |
4597 | */ | |
4598 | usymtab s = utab; | |
4599 | ||
4600 | if (!context_inFunctionLike ()) | |
4601 | llfatalbug (message ("usymtab_getParam: not in function context: %q", | |
4602 | context_unparse ())); | |
4603 | ||
4604 | while (s->lexlevel > paramsScope) | |
4605 | { | |
4606 | s = s->env; | |
4607 | } | |
4608 | ||
4609 | llassert (usymtab_isDefined (s)); | |
4610 | ||
4611 | if (paramno >= s->nentries) | |
4612 | { | |
4613 | /* | |
4614 | ** Parse errors lead to this. | |
4615 | */ | |
4616 | ||
4617 | uentry err = uentry_makeVariableLoc (cstring_makeLiteralTemp ("<error>"), | |
4618 | ctype_unknown); | |
4619 | ||
4620 | uentry_markOwned (err); | |
4621 | return (err); | |
4622 | } | |
4623 | ||
4624 | return (s->entries[paramno]); | |
4625 | } | |
4626 | ||
4627 | static /*@dependent@*/ /*@exposed@*/ uentry | |
4628 | usymtab_getRefTab (/*@notnull@*/ usymtab u, int level, usymId index) | |
4629 | { | |
4630 | uentry ue; | |
4631 | ||
616915dd | 4632 | ue = usymtab_getRefNoisy (u, level, index); |
4633 | ||
616915dd | 4634 | if (uentry_isUndefined (ue)) |
4635 | { | |
4636 | llbug (message ("usymtab_getRef: out of range: %d. level = %d", | |
4637 | index, level)); | |
4638 | } | |
616915dd | 4639 | |
4640 | return ue; | |
4641 | } | |
4642 | ||
4643 | static /*@dependent@*/ /*@exposed@*/ usymtab | |
4644 | usymtab_dropEnv (/*@notnull@*/ usymtab s) | |
4645 | { | |
4646 | if (s->kind == US_CBRANCH) | |
4647 | { | |
4648 | usymtab t = s; | |
4649 | ||
4650 | do | |
4651 | { | |
4652 | t = s; | |
4653 | s = s->env; | |
4654 | llassert (s != GLOBAL_ENV); | |
4655 | } while (s->kind == US_CBRANCH); | |
4656 | /* drop all cases (except in nested scopes */ | |
4657 | ||
4658 | s = t; | |
4659 | llassert (s != GLOBAL_ENV); | |
4660 | } | |
4661 | ||
4662 | if (s->kind == US_FBRANCH) | |
4663 | { | |
4664 | s = s->env; /* skip the true branch */ | |
4665 | llassert (usymtab_isDefined (s)); | |
4666 | llassert (s->kind == US_TBRANCH); | |
4667 | } | |
4668 | ||
4669 | llassert (s != GLOBAL_ENV); | |
4670 | s = s->env; | |
4671 | ||
4672 | return s; | |
4673 | } | |
4674 | ||
4675 | /*@dependent@*/ /*@exposed@*/ uentry | |
4676 | usymtab_getRefQuiet (int level, usymId index) | |
4677 | /*@globals utab@*/ | |
4678 | { | |
4679 | usymtab s = utab; | |
4680 | ||
4681 | ||
4682 | llassert (s != NULL); | |
4683 | llassert (index >= 0); | |
4684 | ||
4685 | if (level > s->lexlevel) | |
28bf4b0b | 4686 | { |
616915dd | 4687 | return uentry_undefined; |
4688 | } | |
4689 | ||
4690 | llassertprint (level <= s->lexlevel, ("level: %d / lexlevel: %d", | |
4691 | level, s->lexlevel)); | |
4692 | ||
4693 | while (s->lexlevel > level) | |
4694 | { | |
4695 | if (usymtab_isBranch (s)) | |
4696 | { | |
4697 | int eindex = refTable_lookup (s, level, index); | |
4698 | ||
4699 | if (eindex != NOT_FOUND) | |
4700 | { | |
4701 | return (s->entries[eindex]); | |
4702 | } | |
4703 | } | |
4704 | ||
4705 | s = usymtab_dropEnv (s); | |
4706 | } | |
4707 | ||
4708 | while (usymtab_isBranch (s) && s->lexlevel == level) | |
4709 | { | |
4710 | int eindex = refTable_lookup (s, level, index); | |
4711 | ||
4712 | if (eindex != NOT_FOUND) | |
4713 | { | |
4714 | return (s->entries[eindex]); | |
4715 | } | |
4716 | ||
4717 | s = usymtab_dropEnv (s); | |
4718 | } | |
4719 | ||
4720 | if (index >= s->nentries) | |
4721 | { | |
4722 | return uentry_undefined; | |
4723 | } | |
4724 | ||
4725 | llassert (!uentry_isUndefined (s->entries[index])); | |
4726 | ||
4727 | return s->entries[index]; | |
4728 | } | |
4729 | ||
4730 | static /*@dependent@*/ /*@exposed@*/ uentry | |
4731 | usymtab_getRefNoisy (/*@notnull@*/ usymtab s, int level, usymId index) | |
4732 | { | |
4733 | usymtab otab = s; | |
4734 | uentry ue = uentry_undefined; | |
616915dd | 4735 | |
4736 | llassert (index >= 0); | |
616915dd | 4737 | |
4738 | while (s->lexlevel > level) | |
4739 | { | |
616915dd | 4740 | if (usymtab_isBranch (s)) |
4741 | { | |
4742 | int eindex = refTable_lookup (s, level, index); | |
4743 | ||
4744 | if (eindex != NOT_FOUND) | |
4745 | { | |
4746 | ue = s->entries[eindex]; | |
4747 | ||
4748 | if (s != otab) | |
4749 | { | |
4750 | while (!usymtab_isBranch (otab)) | |
4751 | { | |
4752 | otab = usymtab_dropEnv (otab); | |
4753 | llassert (otab != GLOBAL_ENV); | |
4754 | } | |
4755 | ||
4756 | if (refTable_lookup (otab, level, index) == NOT_FOUND) | |
4757 | { | |
4758 | ue = usymtab_addRefEntry (otab, uentry_rawName (ue)); | |
4759 | } | |
4760 | else | |
4761 | { | |
4762 | ; | |
4763 | } | |
4764 | } | |
4765 | ||
4766 | return ue; | |
4767 | } | |
4768 | } | |
4769 | ||
4770 | s = usymtab_dropEnv (s); | |
4771 | } | |
4772 | ||
4773 | llassert (usymtab_isDefined (s)); | |
4774 | ||
4775 | while (usymtab_isBranch (s) && s->lexlevel == level) | |
4776 | { | |
4777 | int eindex = refTable_lookup (s, level, index); | |
4778 | ||
4779 | ||
4780 | if (eindex != NOT_FOUND) | |
4781 | { | |
4782 | ue = s->entries[eindex]; | |
4783 | ||
4784 | if (s != otab) | |
4785 | { | |
4786 | while (!usymtab_isBranch (otab)) | |
4787 | { | |
4788 | otab = usymtab_dropEnv (otab); | |
4789 | llassert (otab != GLOBAL_ENV); | |
4790 | } | |
4791 | ||
4792 | ue = usymtab_addRefEntry (otab, uentry_rawName (ue)); | |
4793 | } | |
4794 | else | |
4795 | { | |
4796 | ; | |
4797 | } | |
4798 | ||
4799 | return ue; | |
4800 | } | |
4801 | ||
4802 | s = usymtab_dropEnv (s); | |
4803 | } | |
4804 | ||
4805 | if (s->lexlevel == level && (index < s->nentries)) | |
4806 | { | |
4807 | ue = s->entries[index]; | |
4808 | ||
4809 | if (uentry_isValid (ue)) | |
4810 | { | |
4811 | if (s != otab) | |
4812 | { | |
4813 | while (!usymtab_isBranch (otab)) | |
4814 | { | |
4815 | otab = usymtab_dropEnv (otab); | |
4816 | ||
4817 | if (otab == GLOBAL_ENV) | |
4818 | { | |
4819 | return ue; | |
4820 | } | |
4821 | } | |
4822 | ||
4823 | ue = usymtab_addRefEntry (otab, uentry_rawName (ue)); | |
4824 | } | |
4825 | else | |
4826 | { | |
28bf4b0b | 4827 | } |
616915dd | 4828 | } |
28bf4b0b | 4829 | |
616915dd | 4830 | return ue; |
4831 | } | |
4832 | ||
4833 | ||
4834 | if (index >= s->nentries) | |
4835 | { | |
4836 | return uentry_undefined; | |
4837 | } | |
4838 | ||
4839 | llassert (!uentry_isUndefined (s->entries[index])); | |
4840 | ||
4841 | return s->entries[index]; | |
4842 | } | |
4843 | ||
4844 | /* | |
4845 | ** looking up entries | |
4846 | ** | |
4847 | ** If entry is inside a branch, then copy it, and put it into | |
4848 | ** the branch table. | |
4849 | */ | |
4850 | ||
4851 | static | |
4852 | int refTable_lookup (/*@notnull@*/ usymtab ut, int level, int index) | |
4853 | { | |
4854 | refTable rt = ut->reftable; | |
4855 | int i; | |
4856 | ||
4857 | llassert (rt != NULL); | |
4858 | ||
616915dd | 4859 | for (i = 0; i < ut->nentries; i++) |
4860 | { | |
4861 | if (rt[i]->level == level && rt[i]->index == index) | |
4862 | { | |
28bf4b0b | 4863 | return i; |
616915dd | 4864 | } |
4865 | } | |
28bf4b0b | 4866 | |
4867 | return NOT_FOUND; | |
616915dd | 4868 | } |
4869 | ||
4870 | static | |
4871 | /*@only@*/ refentry refentry_create (int level, int index) | |
4872 | { | |
4873 | refentry r = (refentry) dmalloc (sizeof (*r)); | |
4874 | ||
4875 | r->level = level; | |
4876 | r->index = index; | |
4877 | ||
4878 | return r; | |
4879 | } | |
4880 | ||
4881 | static /*@dependent@*/ /*@exposed@*/ uentry | |
4882 | usymtab_addRefEntry (/*@notnull@*/ usymtab s, cstring k) | |
4883 | { | |
4884 | int eindex; | |
4885 | usymtab ut = s; | |
4886 | ||
28bf4b0b | 4887 | if (ut->reftable == NULL) |
4888 | { | |
4889 | DPRINTF (("Adding ref entry without reftable: %s", k)); | |
4890 | return uentry_undefined; | |
4891 | } | |
616915dd | 4892 | |
28bf4b0b | 4893 | llassert (ut->reftable != NULL); |
4894 | ||
616915dd | 4895 | while (s != GLOBAL_ENV) |
4896 | { | |
4897 | eindex = usymtab_getIndex (s, k); | |
4898 | ||
4899 | if (eindex != NOT_FOUND) | |
4900 | { | |
4901 | uentry current = s->entries[eindex]; | |
4902 | ||
4903 | if (uentry_isVar (current) && !ctype_isFunction (uentry_getType (current))) | |
4904 | { | |
4905 | uentry ue; | |
4906 | ||
28bf4b0b | 4907 | DPRINTF (("Here: copying %s", uentry_unparse (current))); |
6fcd0b1e | 4908 | if (uentry_isNonLocal (current)) |
4909 | { | |
4910 | ue = uentry_copy (current); | |
4911 | } | |
4912 | else | |
4913 | { | |
4914 | ue = uentry_copyNoSave (current); | |
4915 | } | |
4916 | ||
28bf4b0b | 4917 | DPRINTF (("Here: copying %s", uentry_unparse (ue))); |
616915dd | 4918 | usymtab_addEntryQuiet (ut, ue); |
28bf4b0b | 4919 | DPRINTF (("Okay...")); |
4920 | ||
616915dd | 4921 | if (s->reftable != NULL) |
4922 | { | |
4923 | refentry ref = s->reftable[eindex]; | |
616915dd | 4924 | |
4925 | ut->reftable[ut->nentries - 1] | |
4926 | = refentry_create (ref->level, ref->index); | |
4927 | } | |
4928 | else | |
4929 | { | |
4930 | ut->reftable[ut->nentries - 1] | |
4931 | = refentry_create (s->lexlevel, eindex); | |
4932 | } | |
4933 | ||
4934 | return (ue); | |
4935 | } | |
4936 | else | |
4937 | { | |
4938 | return (current); | |
4939 | } | |
4940 | } | |
4941 | ||
4942 | s = usymtab_dropEnv (s); | |
4943 | } | |
4944 | ||
4945 | return uentry_undefined; | |
4946 | } | |
4947 | ||
4948 | static uentry usymtab_lookupAux (usymtab s, cstring k) | |
4949 | { | |
4950 | DPRINTF (("Lookup: %s", k)); | |
4951 | ||
4952 | while (s != GLOBAL_ENV) | |
4953 | { | |
4954 | int eindex = usymtab_getIndex (s, k); | |
4955 | ||
4956 | if (eindex != NOT_FOUND) | |
4957 | { | |
4958 | uentry ret = s->entries[eindex]; | |
28bf4b0b | 4959 | # if 0 |
4960 | ||
616915dd | 4961 | |
28bf4b0b | 4962 | if (s->kind == US_TBRANCH |
4963 | || s->kind == US_FBRANCH | |
4964 | || s->kind == US_CBRANCH) | |
4965 | /* uentry_isGlobalVariable (ret) && os->lexlevel > fileScope) */ | |
4966 | { | |
4967 | uentry ret; | |
4968 | DPRINTF (("Adding global ref entry: %s", k)); | |
4969 | ret = usymtab_addRefEntry (os, k); | |
4970 | DPRINTF (("Adding ref entry: %s", uentry_unparseFull (ret))); | |
4971 | return ret; | |
4972 | } | |
4973 | ||
4974 | # endif | |
616915dd | 4975 | DPRINTF (("Found: %s", uentry_unparseFull (ret))); |
4976 | return (ret); | |
4977 | } | |
28bf4b0b | 4978 | |
616915dd | 4979 | if (s->kind == US_TBRANCH || s->kind == US_FBRANCH |
4980 | || s->kind == US_CBRANCH) | |
4981 | { | |
28bf4b0b | 4982 | /* why isn't this os??? */ |
616915dd | 4983 | uentry ret = usymtab_addRefEntry (s, k); |
28bf4b0b | 4984 | DPRINTF (("Adding ref entry: %s", uentry_unparseFull (ret))); |
616915dd | 4985 | return ret; |
4986 | } | |
4987 | ||
4988 | s = s->env; | |
4989 | } | |
4990 | ||
4991 | return uentry_undefined; | |
4992 | } | |
4993 | ||
4994 | static /*@dependent@*/ /*@exposed@*/ uentry | |
28bf4b0b | 4995 | usymtab_lookupQuietAux (usymtab s, cstring k, bool noalt) |
616915dd | 4996 | { |
4997 | int eindex; | |
4998 | ||
4999 | while (s != GLOBAL_ENV) | |
5000 | { | |
5001 | eindex = usymtab_getIndex (s, k); | |
5002 | ||
5003 | if (eindex != NOT_FOUND) | |
5004 | { | |
5005 | uentry ret = s->entries[eindex]; | |
5006 | return (ret); | |
5007 | } | |
5008 | ||
28bf4b0b | 5009 | if (noalt && usymtab_isBranch (s)) |
5010 | { | |
5011 | s = usymtab_dropEnv (s); | |
5012 | } | |
5013 | else | |
5014 | { | |
abd7f895 | 5015 | llassert (s != NULL); /*@i523 should not need this? */ |
28bf4b0b | 5016 | s = s->env; |
5017 | } | |
616915dd | 5018 | } |
5019 | ||
5020 | return uentry_undefined; | |
5021 | } | |
5022 | ||
28bf4b0b | 5023 | static /*@exposed@*/ /*@dependent@*/ uentry |
5024 | usymtab_lookupQuiet (usymtab s, cstring k) | |
5025 | { | |
5026 | return usymtab_lookupQuietAux (s, k, FALSE); | |
5027 | } | |
5028 | ||
5029 | static /*@exposed@*/ /*@dependent@*/ uentry | |
5030 | usymtab_lookupQuietNoAlt (usymtab s, cstring k) | |
5031 | { | |
5032 | return usymtab_lookupQuietAux (s, k, TRUE); | |
5033 | } | |
5034 | ||
616915dd | 5035 | /*@dependent@*/ /*@observer@*/ uentry |
5036 | usymtab_lookupSafe (cstring k) | |
5037 | /*@globals utab@*/ | |
5038 | { | |
5039 | DPRINTF (("Lookup safe: %s", k)); | |
5040 | return (usymtab_lookupAux (utab, k)); | |
5041 | } | |
5042 | ||
5043 | uentry | |
5044 | usymtab_lookupExpose (cstring k) | |
5045 | /*@globals utab@*/ | |
5046 | { | |
5047 | uentry ce = usymtab_lookupAux (utab, k); | |
5048 | ||
5049 | if (uentry_isUndefined (ce)) | |
5050 | { | |
5051 | llfatalbug (message ("usymtab_lookup: not found: *%s*", k)); | |
5052 | } | |
5053 | ||
5054 | if (uentry_isPriv (ce)) | |
5055 | { | |
5056 | llfatalbug (message ("usymtab_lookup: private: *%s*", k)); | |
5057 | } | |
5058 | ||
5059 | return ce; | |
5060 | } | |
5061 | ||
5062 | uentry usymtab_lookupExposeGlob (cstring k) | |
5063 | { | |
5064 | return (usymtab_lookupGlobSafe (k)); | |
5065 | } | |
5066 | ||
5067 | uentry usymtab_lookupGlob (cstring k) | |
5068 | /*@globals globtab@*/ | |
5069 | { | |
5070 | uentry ce = usymtab_lookupAux (globtab, k); | |
5071 | ||
5072 | if (uentry_isUndefined (ce)) | |
5073 | llfatalbug (message ("usymtab_lookup: not found: %s", k)); | |
5074 | ||
5075 | if (uentry_isPriv (ce)) | |
5076 | llfatalbug (message ("usymtab_lookup: private: %s", k)); | |
5077 | ||
6483a926 | 5078 | DPRINTF (("Lookup global: %s", uentry_unparseFull (ce))); |
616915dd | 5079 | return ce; |
5080 | } | |
5081 | ||
5082 | /*@observer@*/ uentry | |
5083 | usymtab_lookupGlobSafe (cstring k) | |
5084 | /*@globals globtab@*/ | |
5085 | { | |
5086 | uentry ce = usymtab_lookupAux (globtab, k); | |
6483a926 | 5087 | DPRINTF (("Lookup global: %s", uentry_unparseFull (ce))); |
616915dd | 5088 | return ce; |
5089 | } | |
5090 | ||
5091 | uentry usymtab_lookupEither (cstring k) | |
5092 | /*@globals utab@*/ | |
5093 | { | |
5094 | uentry ce = usymtab_lookupSafe (k); | |
5095 | ||
5096 | if (uentry_isUndefined (ce)) | |
5097 | llfatalerror (message ("usymtab_lookup: not found: %s", k)); | |
5098 | ||
6483a926 | 5099 | DPRINTF (("Lookup either: %s", uentry_unparseFull (ce))); |
616915dd | 5100 | return ce; |
5101 | } | |
5102 | ||
616915dd | 5103 | ctype |
5104 | usymtab_lookupType (cstring k) | |
5105 | /*@globals globtab@*/ | |
5106 | { | |
5107 | usymId uid = usymtab_getTypeId (k); | |
5108 | ||
5109 | if (uid == USYMIDINVALID) | |
5110 | { | |
5111 | llcontbug (message ("usymtab_lookupType: not found: %s", k)); | |
5112 | return ctype_unknown; | |
5113 | } | |
5114 | ||
5115 | return (uentry_getRealType (usymtab_getTypeEntry (uid))); | |
5116 | } | |
616915dd | 5117 | |
5118 | ctype | |
5119 | usymtab_lookupAbstractType (cstring k) /*@globals globtab@*/ | |
5120 | { | |
5121 | usymId uid = usymtab_getTypeId (k); | |
5122 | ||
5123 | if (uid == USYMIDINVALID) | |
5124 | { | |
5125 | llcontbug (message ("usymtab_lookupType: not found: %s", k)); | |
5126 | return ctype_unknown; | |
5127 | } | |
5128 | ||
5129 | return (uentry_getAbstractType (usymtab_getTypeEntry (uid))); | |
5130 | } | |
5131 | ||
5132 | /* | |
5133 | ** if there is an unnamed lcl-specified struct tag matching | |
5134 | ** the uentryList, return its datatype. Otherwise, returns | |
5135 | ** ctype_undefined. | |
5136 | */ | |
5137 | ||
5138 | ctype | |
5139 | usymtab_structFieldsType (uentryList f) | |
5140 | /*@globals globtab@*/ | |
5141 | { | |
5142 | return (usymtab_suFieldsType (f, TRUE)); | |
5143 | } | |
5144 | ||
5145 | ctype | |
5146 | usymtab_unionFieldsType (uentryList f) | |
5147 | /*@globals globtab@*/ | |
5148 | { | |
5149 | return (usymtab_suFieldsType (f, FALSE)); | |
5150 | } | |
5151 | ||
5152 | static ctype | |
5153 | usymtab_suFieldsType (uentryList f, bool isStruct) | |
5154 | /*@globals globtab@*/ | |
5155 | { | |
5156 | int i; | |
5157 | ||
28bf4b0b | 5158 | DPRINTF (("Fields: %s", uentryList_unparse (f))); |
5159 | ||
5160 | if (fileloc_isSpec (g_currentloc)) | |
5161 | { | |
5162 | return (ctype_undefined); | |
5163 | } | |
616915dd | 5164 | |
5165 | for (i = 0; i < globtab->nentries; i++) | |
5166 | { | |
5167 | uentry current = globtab->entries[i]; | |
5168 | ||
5169 | if ((isStruct | |
5170 | ? uentry_isStructTag (current) : uentry_isUnionTag (current))) | |
5171 | { | |
5172 | if (isFakeTag (uentry_rawName (current))) | |
5173 | { | |
5174 | ctype ct = uentry_getType (current); | |
28bf4b0b | 5175 | |
5176 | DPRINTF (("Check: %s", ctype_unparse (ct))); | |
616915dd | 5177 | |
5178 | if ((isStruct ? ctype_isStruct (ct) : ctype_isUnion (ct)) | |
28bf4b0b | 5179 | && |
5180 | (uentry_isSpecified (current) | |
5181 | && uentryList_equivFields (f, ctype_getFields (ct)))) | |
616915dd | 5182 | { |
28bf4b0b | 5183 | return uentry_getAbstractType (current); |
5184 | } | |
5185 | else | |
5186 | { | |
5187 | ; | |
616915dd | 5188 | } |
5189 | } | |
5190 | } | |
5191 | } | |
5192 | ||
5193 | return ctype_undefined; | |
5194 | } | |
5195 | ||
5196 | ctype | |
5197 | usymtab_enumEnumNameListType (enumNameList f) | |
5198 | /*@globals globtab@*/ | |
5199 | { | |
5200 | int i; | |
5201 | ||
5202 | for (i = 0; i < globtab->nentries; i++) | |
5203 | { | |
5204 | uentry current = globtab->entries[i]; | |
5205 | ||
5206 | if (uentry_isEnumTag (current)) | |
5207 | { | |
5208 | if (isFakeTag (uentry_rawName (current))) | |
5209 | { | |
5210 | ctype ct = uentry_getType (current); | |
5211 | ||
5212 | if (ctype_isEnum (ct) && (enumNameList_match (f, ctype_elist (ct)))) | |
5213 | { | |
5214 | return uentry_getType (current); | |
5215 | } | |
5216 | } | |
5217 | } | |
5218 | } | |
5219 | ||
5220 | return ctype_undefined; | |
5221 | } | |
5222 | ||
5223 | bool | |
5224 | usymtab_exists (cstring k) | |
5225 | /*@globals utab@*/ | |
5226 | { | |
5227 | uentry ce = usymtab_lookupSafe (k); | |
616915dd | 5228 | return (!(uentry_isUndefined (ce)) && !(uentry_isPriv (ce))); |
5229 | } | |
5230 | ||
5231 | bool | |
5232 | usymtab_existsReal (cstring k) | |
5233 | /*@globals utab@*/ | |
5234 | { | |
5235 | uentry ce = usymtab_lookupSafe (k); | |
5236 | ||
5237 | return (!(uentry_isUndefined (ce)) | |
5238 | && !(uentry_isPriv (ce)) | |
5239 | && !(uentry_isExpandedMacro (ce))); | |
5240 | } | |
5241 | ||
5242 | bool | |
5243 | usymtab_existsGlob (cstring k) | |
5244 | /*@globals globtab@*/ | |
5245 | { | |
5246 | uentry ce = usymtab_lookupAux (globtab, k); | |
5247 | ||
5248 | return (!(uentry_isUndefined (ce)) && !(uentry_isPriv (ce))); | |
5249 | } | |
5250 | ||
616915dd | 5251 | bool |
5252 | usymtab_existsEither (cstring k) | |
5253 | /*@globals utab@*/ | |
5254 | { | |
5255 | uentry ce = usymtab_lookupAux (utab, k); | |
5256 | ||
5257 | return (uentry_isValid (ce)); | |
5258 | } | |
5259 | ||
5260 | bool | |
5261 | usymtab_existsGlobEither (cstring k) | |
5262 | /*@globals globtab@*/ | |
5263 | { | |
5264 | uentry ce = usymtab_lookupAux (globtab, k); | |
5265 | ||
5266 | return (uentry_isValid (ce)); | |
5267 | } | |
616915dd | 5268 | |
5269 | bool | |
5270 | usymtab_existsType (cstring k) | |
5271 | /*@globals globtab@*/ | |
5272 | { | |
5273 | uentry ce = usymtab_lookupAux (globtab, k); | |
5274 | ||
5275 | return (!(uentry_isUndefined (ce)) && !(uentry_isPriv (ce)) && uentry_isDatatype (ce)); | |
5276 | } | |
5277 | ||
5278 | bool | |
5279 | usymtab_existsTypeEither (cstring k) | |
5280 | /*@globals globtab@*/ | |
5281 | { | |
28bf4b0b | 5282 | uentry ce; |
5283 | ce = usymtab_lookupAux (globtab, k); | |
5284 | return (uentry_isValid (ce) && uentry_isDatatype (ce)); | |
616915dd | 5285 | } |
5286 | ||
5287 | bool | |
5288 | usymtab_existsStructTag (cstring k) /*@globals globtab@*/ | |
5289 | { | |
5290 | cstring sname = makeStruct (k); | |
5291 | uentry ce = usymtab_lookupAux (globtab, sname); | |
28bf4b0b | 5292 | cstring_free (sname); |
616915dd | 5293 | return (!(uentry_isUndefined (ce)) && !(uentry_isPriv (ce))); |
5294 | } | |
5295 | ||
5296 | bool | |
5297 | usymtab_existsUnionTag (cstring k) /*@globals globtab@*/ | |
5298 | { | |
5299 | cstring uname = makeUnion (k); | |
5300 | uentry ce = usymtab_lookupAux (globtab, uname); | |
5301 | ||
5302 | cstring_free (uname); | |
5303 | ||
5304 | return (!(uentry_isUndefined (ce)) && !(uentry_isPriv (ce))); | |
5305 | } | |
5306 | ||
5307 | bool | |
5308 | usymtab_existsEnumTag (cstring k) /*@globals globtab@*/ | |
5309 | { | |
5310 | cstring ename = makeEnum (k); | |
5311 | uentry ce = usymtab_lookupAux (globtab, ename); | |
5312 | ||
5313 | cstring_free (ename); | |
5314 | return (!(uentry_isUndefined (ce)) && !(uentry_isPriv (ce))); | |
5315 | } | |
5316 | ||
616915dd | 5317 | bool usymtab_existsVar (cstring k) |
5318 | /*@globals utab@*/ | |
5319 | { | |
5320 | uentry ce = usymtab_lookupSafe (k); | |
5321 | ||
5322 | return (!(uentry_isUndefined (ce)) && !(uentry_isPriv (ce)) && (uentry_isVar (ce))); | |
5323 | } | |
616915dd | 5324 | |
5325 | /* | |
5326 | ** destructors | |
5327 | */ | |
5328 | ||
5329 | static void | |
5330 | refTable_free (/*@only@*/ /*@null@*/ refTable x, int nentries) | |
5331 | { | |
5332 | if (x != NULL) | |
5333 | { | |
5334 | int i; | |
5335 | ||
5336 | for (i = 0; i < nentries; i++) | |
5337 | { | |
5338 | sfree (x[i]); | |
5339 | } | |
5340 | ||
5341 | sfree (x); | |
5342 | } | |
5343 | } | |
5344 | ||
5345 | static void | |
5346 | usymtab_freeLevel (/*@notnull@*/ /*@only@*/ usymtab u) | |
5347 | /*@globals globtab, utab, filetab@*/ | |
5348 | { | |
5349 | int i; | |
5350 | ||
6fcd0b1e | 5351 | DPRINTF (("Free level [%p]", u)); |
616915dd | 5352 | aliasTable_free (u->aliases); |
28bf4b0b | 5353 | |
616915dd | 5354 | refTable_free (u->reftable, u->nentries); |
5355 | ||
5356 | if (u == filetab || u == globtab) | |
5357 | { | |
5358 | for (i = 0; i < u->nentries; i++) | |
5359 | { | |
6fcd0b1e | 5360 | DPRINTF (("Free complete: %d", i)); |
5361 | DPRINTF (("Uentry: %s", uentry_unparse (u->entries[i]))); | |
616915dd | 5362 | uentry_freeComplete (u->entries[i]); |
6fcd0b1e | 5363 | u->entries[i] = uentry_undefined; |
616915dd | 5364 | } |
5365 | } | |
5366 | else | |
5367 | { | |
5368 | for (i = 0; i < u->nentries; i++) | |
5369 | { | |
5370 | uentry_free (u->entries[i]); | |
6fcd0b1e | 5371 | u->entries[i] = uentry_undefined; |
616915dd | 5372 | } |
5373 | } | |
5374 | ||
5375 | guardSet_free (u->guards); | |
5376 | sfree (u->entries); | |
5377 | ||
5378 | if (u != globtab | |
5379 | && u != utab | |
5380 | && u != filetab) | |
5381 | { | |
28bf4b0b | 5382 | llassert (!cstringTable_isDefined (u->htable)); |
616915dd | 5383 | } |
5384 | ||
6fcd0b1e | 5385 | sfree (u); /* evans 2002-07-12: was inside if */ |
5386 | /*:!!mustfree@*/ | |
5387 | } /*!@=mustfree@*/ | |
616915dd | 5388 | |
5389 | static void | |
5390 | usymtab_freeAux (/*@only@*/ usymtab u) | |
5391 | /*@globals globtab, utab, filetab@*/ | |
5392 | /*@modifies u@*/ | |
5393 | { | |
5394 | while (u != GLOBAL_ENV) | |
5395 | { | |
5396 | usymtab t = u->env; | |
5397 | usymtab_freeLevel (u); | |
5398 | u = t; | |
5399 | /*@-branchstate@*/ | |
5400 | } | |
5401 | /*@=branchstate@*/ | |
5402 | } | |
5403 | ||
5404 | void usymtab_free () | |
5405 | /*@globals killed utab, globtab, filetab@*/ | |
5406 | /*@modifies utab@*/ | |
5407 | { | |
5408 | dbgfree = TRUE; | |
5409 | usymtab_freeAux (utab); | |
6fcd0b1e | 5410 | utab = usymtab_undefined; |
616915dd | 5411 | } |
5412 | ||
5413 | static int usymtab_lexicalLevel (void) /*@globals utab@*/ | |
5414 | { | |
5415 | return (utab->lexlevel); | |
5416 | } | |
5417 | ||
5418 | bool usymtab_inGlobalScope () /*@globals utab, globtab@*/ | |
5419 | { | |
5420 | return (utab == globtab); | |
5421 | } | |
5422 | ||
5423 | bool usymtab_inFileScope () /*@globals utab@*/ | |
5424 | { | |
5425 | return (utab->lexlevel == fileScope); | |
5426 | } | |
5427 | ||
5428 | bool usymtab_inFunctionScope () /*@globals utab@*/ | |
5429 | { | |
5430 | return (utab->lexlevel == functionScope); | |
5431 | } | |
5432 | ||
616915dd | 5433 | void |
5434 | usymtab_replaceEntry (uentry s) | |
5435 | /*@globals utab, globtab@*/ | |
5436 | /*@modifies utab, s@*/ | |
5437 | { | |
5438 | usymtab_replaceEntryAux (utab, s); | |
5439 | } | |
616915dd | 5440 | |
5441 | bool | |
5442 | usymtab_matchForwardStruct (usymId u1, usymId u2) | |
5443 | /*@globals globtab@*/ | |
5444 | { | |
5445 | uentry ue1 = usymtab_getTypeEntry (u1); | |
5446 | uentry ue2 = usymtab_getTypeEntry (u2); | |
5447 | ||
5448 | if (uentry_isAnyTag (ue2)) | |
5449 | { | |
5450 | ctype reptype = uentry_getType (ue1); | |
5451 | ||
5452 | if (ctype_isPointer (reptype)) | |
5453 | { | |
5454 | ctype repbase = ctype_getBaseType (reptype); | |
5455 | ||
5456 | if (ctype_isUA (repbase)) | |
5457 | { | |
5458 | typeId rtuid = ctype_typeId (repbase); | |
5459 | ||
5460 | if (u2 == rtuid) return TRUE; | |
5461 | ||
5462 | if (usymId_isValid (rtuid)) | |
5463 | { | |
5464 | reptype = uentry_getType (usymtab_getTypeEntry (rtuid)); | |
5465 | ||
5466 | return (ctype_isUA (reptype) && (u2 == (ctype_typeId (reptype)))); | |
5467 | } | |
5468 | } | |
5469 | } | |
5470 | } | |
5471 | ||
5472 | return FALSE; | |
5473 | } | |
5474 | ||
5475 | void usymtab_addGuards (guardSet guards) | |
5476 | /*@modifies utab@*/ | |
5477 | { | |
5478 | utab->guards = guardSet_union (utab->guards, guards); | |
5479 | } | |
5480 | ||
5481 | static bool usymtab_isGuardedAux (sRef s) | |
5482 | /*@globals utab@*/ | |
5483 | { | |
5484 | usymtab tab = utab; | |
5485 | sRef base = sRef_getRootBase (s); | |
5486 | int lowlevel = paramsScope; | |
5487 | int baselevel = sRef_lexLevel (base); | |
5488 | ||
5489 | if (sRef_isCvar (base)) | |
5490 | { | |
5491 | lowlevel = baselevel; | |
5492 | if (lowlevel < paramsScope) lowlevel = paramsScope; | |
5493 | } | |
5494 | ||
5495 | while (tab->lexlevel >= lowlevel) | |
5496 | { | |
2209bcb7 | 5497 | DPRINTF (("Is guarded? [%s] %s", |
5498 | guardSet_unparse (tab->guards), | |
5499 | sRef_unparseFull (s))); | |
5500 | ||
616915dd | 5501 | if (guardSet_isGuarded (tab->guards, s)) |
5502 | { | |
5503 | /* | |
5504 | if (!sRef_definitelyNull (s)) | |
5505 | { | |
5506 | sRef_setNotNull (s, fileloc_undefined); | |
5507 | } | |
5508 | */ | |
5509 | return TRUE; | |
5510 | } | |
5511 | ||
5512 | tab = usymtab_dropEnv (tab); | |
5513 | } | |
5514 | ||
5515 | return FALSE; | |
5516 | } | |
5517 | ||
5518 | void usymtab_unguard (sRef s) /*@modifies utab@*/ | |
5519 | { | |
5520 | usymtab tab = utab; | |
5521 | sRef base = sRef_getRootBase (s); | |
5522 | int lowlevel = paramsScope; | |
5523 | int baselevel = sRef_lexLevel (base); | |
5524 | ||
5525 | if (sRef_isCvar (base)) | |
5526 | { | |
5527 | lowlevel = baselevel; | |
5528 | if (lowlevel < paramsScope) lowlevel = paramsScope; | |
5529 | } | |
5530 | ||
5531 | while (tab->lexlevel >= lowlevel) | |
5532 | { | |
5533 | if (guardSet_isGuarded (tab->guards, s)) | |
5534 | { | |
5535 | guardSet_delete (tab->guards, s); | |
5536 | } | |
5537 | ||
5538 | tab = usymtab_dropEnv (tab); | |
5539 | } | |
5540 | } | |
5541 | ||
5542 | bool usymtab_isGuarded (sRef s) | |
5543 | { | |
2209bcb7 | 5544 | DPRINTF (("Is guarded? %s", sRef_unparseFull (s))); |
616915dd | 5545 | return (sRef_aliasCompleteSimplePred (usymtab_isGuardedAux, s)); |
5546 | } | |
5547 | ||
28bf4b0b | 5548 | bool usymtab_isDefinitelyNull (sRef s) |
616915dd | 5549 | { |
28bf4b0b | 5550 | return (sRef_aliasCheckSimplePred (usymtab_isDefinitelyNullAux, s)); |
616915dd | 5551 | } |
5552 | ||
28bf4b0b | 5553 | bool usymtab_isDefinitelyNullDeep (sRef s) |
616915dd | 5554 | { |
28bf4b0b | 5555 | return (sRef_deepPred (usymtab_isDefinitelyNull, s)); |
616915dd | 5556 | } |
5557 | ||
28bf4b0b | 5558 | static bool usymtab_isDefinitelyNullAux (sRef s) |
616915dd | 5559 | /*@globals utab@*/ |
5560 | { | |
5561 | usymtab tab = utab; | |
5562 | sRef base = sRef_getRootBase (s); | |
5563 | int lowlevel = paramsScope; | |
5564 | ||
5565 | if (sRef_isCvar (base)) | |
5566 | { | |
5567 | lowlevel = sRef_lexLevel (base); | |
5568 | if (lowlevel < paramsScope) lowlevel = paramsScope; | |
5569 | } | |
5570 | ||
5571 | while (tab->lexlevel >= lowlevel) | |
5572 | { | |
28bf4b0b | 5573 | if (guardSet_mustBeNull (tab->guards, s)) |
616915dd | 5574 | { |
5575 | return TRUE; | |
5576 | } | |
5577 | ||
5578 | while (tab->kind == US_CBRANCH) | |
5579 | { | |
5580 | tab = tab->env; | |
5581 | } | |
5582 | ||
5583 | llassert (usymtab_isDefined (tab)); | |
5584 | ||
5585 | if (tab->kind == US_FBRANCH) | |
5586 | { | |
5587 | tab = tab->env; | |
5588 | llassert (tab->kind == US_TBRANCH); | |
5589 | } | |
5590 | ||
5591 | tab = tab->env; | |
5592 | } | |
5593 | ||
5594 | return FALSE; | |
5595 | } | |
5596 | ||
5597 | void | |
5598 | usymtab_printGuards () | |
5599 | /*@globals utab, globtab@*/ | |
5600 | { | |
5601 | usymtab ttab = utab; | |
5602 | ||
5603 | while (ttab != globtab) | |
5604 | { | |
5605 | llmsg (message ("Guards [%d]: %q", ttab->lexlevel, | |
5606 | guardSet_unparse (ttab->guards))); | |
5607 | ttab = ttab->env; | |
5608 | } | |
5609 | } | |
5610 | ||
5611 | void | |
5612 | usymtab_displayAllUses () | |
5613 | /*@globals utab, globtab@*/ | |
5614 | { | |
5615 | usymtab copy; | |
5616 | ||
5617 | /* only in top scope */ | |
5618 | llassert (utab == globtab); | |
5619 | ||
5620 | /* need a copy, so order is not messed up by sort! */ | |
5621 | copy = usymtab_shallowCopy (globtab); | |
5622 | ||
5623 | qsort (copy->entries, (size_t)copy->nentries, | |
5624 | sizeof (*copy->entries), (int (*)(const void *, const void *)) uentry_xcompareuses); | |
5625 | ||
5626 | usymtab_entries (copy, ue) | |
5627 | { | |
37ae0b5e | 5628 | if (uentry_isValid (ue) && !uentry_isGlobalMarker (ue)) |
616915dd | 5629 | { |
5630 | filelocList uses = uentry_getUses (ue); | |
5631 | int size = filelocList_realSize (uses); | |
5632 | ||
5633 | if (fileloc_isDefined (uentry_whereDefined (ue)) | |
5634 | && !fileloc_isLib (uentry_whereDefined (ue)) | |
5635 | && (size > 0)) | |
5636 | { | |
28bf4b0b | 5637 | llmsg (message ("%q (%q), %d use%&:\n %q", |
616915dd | 5638 | uentry_getName (ue), |
5639 | fileloc_unparse (uentry_whereDefined (ue)), | |
5640 | size, filelocList_unparseUses (uses))); | |
5641 | } | |
5642 | } | |
5643 | } end_usymtab_entries; | |
5644 | ||
5645 | usymtab_shallowFree (copy); | |
5646 | } | |
5647 | ||
5648 | static /*@dependent@*/ /*@exposed@*/ usymtab | |
5649 | usymtab_getFileTab () | |
5650 | /*@globals filetab@*/ | |
5651 | { | |
5652 | llassert (filetab != NULL); | |
5653 | ||
5654 | return filetab; | |
5655 | } | |
5656 | ||
5657 | /*@only@*/ cstring | |
5658 | usymtab_unparseStack () | |
5659 | /*@globals utab@*/ | |
5660 | { | |
5661 | return (usymtab_unparseStackTab (utab)); | |
5662 | } | |
5663 | ||
5664 | static /*@only@*/ cstring | |
5665 | usymtab_unparseStackTab (usymtab t) | |
5666 | { | |
5667 | bool firstOne = TRUE; | |
5668 | cstring ret = cstring_makeLiteral ("["); | |
5669 | ||
5670 | while (t != GLOBAL_ENV) | |
5671 | { | |
5672 | if (firstOne) | |
5673 | { | |
5674 | ret = message ("%q %q", ret, usymtab_typeName (t)); | |
5675 | firstOne = FALSE; | |
5676 | } | |
5677 | else | |
5678 | { | |
5679 | ret = message ("%q, %q", ret, usymtab_typeName (t)); | |
5680 | } | |
5681 | t = t->env; | |
5682 | } | |
5683 | ||
5684 | ret = message ("%q ]", ret); | |
5685 | return ret; | |
5686 | } | |
5687 | ||
5688 | static /*@only@*/ cstring | |
5689 | usymtab_typeName (/*@notnull@*/ usymtab t) | |
5690 | { | |
5691 | switch (t->kind) | |
5692 | { | |
5693 | case US_GLOBAL: return cstring_makeLiteral ("global"); | |
5694 | case US_NORMAL: return cstring_makeLiteral ("normal"); | |
5695 | case US_TBRANCH: return cstring_makeLiteral ("true"); | |
5696 | case US_FBRANCH: return cstring_makeLiteral ("false"); | |
5697 | case US_CBRANCH: return cstring_makeLiteral ("case"); | |
5698 | case US_SWITCH: return cstring_makeLiteral ("switch"); | |
5699 | } | |
5700 | ||
5701 | BADEXIT; | |
5702 | } | |
5703 | ||
28bf4b0b | 5704 | void usymtab_addMustAlias (/*@exposed@*/ sRef s, /*@exposed@*/ sRef al) |
616915dd | 5705 | /*@modifies utab@*/ |
5706 | { | |
28bf4b0b | 5707 | if (!sRef_similar (s, al)) |
616915dd | 5708 | { |
28bf4b0b | 5709 | usymtab_addForceMustAlias (s, al); |
616915dd | 5710 | } |
5711 | } | |
5712 | ||
5713 | /* | |
5714 | ** Same as usymtab_addMustAlias, except does not check sRef_isSimilar. | |
5715 | */ | |
5716 | ||
28bf4b0b | 5717 | void usymtab_addForceMustAlias (/*@exposed@*/ sRef s, /*@exposed@*/ sRef al) |
616915dd | 5718 | /*@modifies utab@*/ |
5719 | { | |
393e573f | 5720 | /* evans 2002-03-3: was sRef_isMeaningful -- but we need to keep aliases for new storage also! */ |
616915dd | 5721 | if (sRef_isMeaningful (s) |
5722 | && sRef_isMeaningful (al) | |
5723 | && !(sRef_isConst (s) || sRef_isConst (al)) | |
5724 | && !(sRef_isAddress (al) && sRef_isDirectParam (sRef_getBase (al)))) | |
5725 | { | |
5726 | utab->aliases = aliasTable_addMustAlias (utab->aliases, s, al); | |
5727 | DPRINTF (("Must alias: %s", aliasTable_unparse (utab->aliases))); | |
5728 | ||
5729 | /* | |
5730 | ** for local variable, aliasing is symmetric | |
5731 | */ | |
5732 | ||
5733 | if (sRef_isLocalVar (s) && sRef_isLocalVar (al)) | |
5734 | { | |
5735 | utab->aliases = aliasTable_addMustAlias (utab->aliases, al, s); | |
5736 | } | |
5737 | } | |
5738 | else | |
5739 | { | |
393e573f | 5740 | DPRINTF (("Not aliasing! %s / %s", sRef_unparseFull (s), sRef_unparseFull (al))); |
5741 | DPRINTF (("meaningful: %d %d", sRef_isMeaningful (s), sRef_isMeaningful (al))); | |
616915dd | 5742 | } |
5743 | } | |
5744 | ||
393e573f | 5745 | void usymtab_addReallyForceMustAlias (/*@exposed@*/ sRef s, /*@exposed@*/ sRef al) |
5746 | /*@modifies utab@*/ | |
5747 | { | |
5748 | utab->aliases = aliasTable_addMustAlias (utab->aliases, s, al); | |
5749 | } | |
5750 | ||
616915dd | 5751 | void usymtab_clearAlias (sRef s) |
5752 | /*@modifies utab, s@*/ | |
5753 | { | |
5754 | ||
5755 | aliasTable_clearAliases (utab->aliases, s); | |
5756 | } | |
5757 | ||
5758 | sRefSet usymtab_allAliases (sRef s) | |
5759 | /*@globals utab@*/ | |
5760 | { | |
393e573f | 5761 | if (sRef_isSomewhatMeaningful (s)) |
616915dd | 5762 | { |
5763 | sRefSet ret; | |
616915dd | 5764 | |
5765 | ret = sRefSet_unionFree (aliasTable_aliasedBy (utab->aliases, s), | |
5766 | aliasTable_canAlias (utab->aliases, s)); | |
28bf4b0b | 5767 | return (ret); |
616915dd | 5768 | } |
5769 | else | |
5770 | { | |
28bf4b0b | 5771 | DPRINTF (("NOT A MEANINGFUL SREF!")); |
616915dd | 5772 | return sRefSet_undefined; |
5773 | } | |
5774 | } | |
5775 | ||
5776 | /*@only@*/ sRefSet usymtab_canAlias (sRef s) | |
28bf4b0b | 5777 | /*@globals utab@*/ |
616915dd | 5778 | { |
393e573f | 5779 | if (sRef_isSomewhatMeaningful (s)) |
616915dd | 5780 | { |
5781 | sRefSet res = aliasTable_canAlias (utab->aliases, s); | |
616915dd | 5782 | return res; |
5783 | } | |
28bf4b0b | 5784 | |
616915dd | 5785 | return sRefSet_undefined; |
5786 | } | |
5787 | ||
5788 | /*@only@*/ sRefSet usymtab_aliasedBy (sRef s) | |
28bf4b0b | 5789 | /*@globals utab@*/ |
616915dd | 5790 | { |
5791 | return (aliasTable_aliasedBy (utab->aliases, s)); | |
5792 | } | |
5793 | ||
5794 | /*@only@*/ cstring usymtab_unparseAliases () | |
5795 | /*@globals utab@*/ | |
5796 | { | |
5797 | return (aliasTable_unparse (utab->aliases)); | |
5798 | } | |
5799 | ||
5800 | /* | |
5801 | ** Debugging routines: | |
5802 | ** okay to leak storage here, only for debugging | |
5803 | */ | |
5804 | ||
5805 | /*@-mustfree@*/ | |
5806 | ||
5807 | void | |
5808 | usymtab_printOut (void) | |
5809 | /*@globals utab@*/ | |
5810 | { | |
5811 | int i; | |
5812 | usymtab s = utab; | |
5813 | int depth = 0; | |
5814 | char *ind = mstring_copy (" "); | |
5815 | ||
80489f0a | 5816 | fprintf (g_warningstream, "<<< [symbol table] >>>\n"); |
616915dd | 5817 | |
5818 | while (s != GLOBAL_ENV && s->env != GLOBAL_ENV) | |
5819 | { | |
5820 | cstring tname = usymtab_typeName (s); | |
5821 | ||
5822 | if (depth < 5) | |
5823 | { | |
5824 | ind[depth * 3 + 1] = '\0'; | |
5825 | } | |
5826 | ||
80489f0a | 5827 | fprintf (g_warningstream, "level: %d (%s)\n", s->lexlevel, |
616915dd | 5828 | cstring_toCharsSafe (tname)); |
5829 | ||
5830 | cstring_free (tname); | |
5831 | ||
5832 | for (i = 0; i < s->nentries; i++) | |
5833 | { | |
5834 | cstring us = uentry_unparseFull (s->entries[i]); | |
80489f0a | 5835 | fprintf (g_warningstream, "%s\n", cstring_toCharsSafe (us)); |
616915dd | 5836 | cstring_free (us); |
5837 | } | |
5838 | ||
5839 | if (s->reftable != NULL && s->nentries > 0) | |
5840 | { | |
80489f0a | 5841 | fprintf (g_warningstream, "\t<< Ref table >>\n"); |
616915dd | 5842 | |
5843 | for (i = 0; i < s->nentries; i++) | |
5844 | { | |
80489f0a | 5845 | fprintf (g_warningstream, "\t%s %3d: %d, %d\n", ind, i, |
616915dd | 5846 | s->reftable[i]->level, |
5847 | s->reftable[i]->index); | |
5848 | } | |
5849 | } | |
5850 | ||
5851 | ind[depth * 3 + 1] = ' '; | |
5852 | depth++; | |
5853 | s = s->env; | |
5854 | } | |
80489f0a | 5855 | fprintf (g_warningstream, "<<< end usymtab >>>\n"); |
616915dd | 5856 | mstring_free (ind); |
5857 | return; | |
5858 | } | |
5859 | ||
5860 | void | |
5861 | usymtab_printTypes () | |
5862 | /*@globals globtab@*/ | |
5863 | { | |
5864 | usymtab_printAllAux (globtab); | |
5865 | } | |
5866 | ||
5867 | void | |
5868 | usymtab_printAll (void) | |
5869 | /*@globals utab@*/ | |
5870 | { | |
5871 | usymtab_printAllAux (utab); | |
5872 | } | |
5873 | ||
5874 | static void | |
5875 | usymtab_printAllAux (usymtab s) | |
80489f0a | 5876 | /*@modifies g_warningstream@*/ |
616915dd | 5877 | { |
5878 | int i; | |
5879 | int depth = 0; | |
5880 | char *ind = mstring_copy (" "); | |
5881 | ||
5882 | printf ("[[[ usymtab ]]]"); | |
5883 | ||
5884 | while (s != GLOBAL_ENV) | |
5885 | { | |
5886 | if (depth < 5) | |
5887 | ind[depth * 3 + 1] = '\0'; | |
5888 | ||
5889 | if (s->env == GLOBAL_ENV) | |
5890 | { | |
5891 | int looplow; | |
5892 | ||
5893 | printf ("level: %d / break: %s / exit: %s\n", s->lexlevel, | |
5894 | cstring_toCharsSafe (bool_unparse (s->mustBreak)), | |
5895 | cstring_toCharsSafe (exitkind_unparse (s->exitCode))); | |
5896 | ||
5897 | looplow = 0; | |
5898 | ||
5899 | for (i = looplow; i < s->nentries; i++) | |
5900 | { | |
5901 | printf ("%s%3d. %s\n", ind, i, | |
5902 | cstring_toCharsSafe (uentry_unparseFull (s->entries[i]))); | |
5903 | } | |
5904 | } | |
5905 | else | |
5906 | { | |
5907 | printf ("level: %d / break: %s / exit: %s\n", s->lexlevel, | |
5908 | cstring_toCharsSafe (bool_unparse (s->mustBreak)), | |
5909 | cstring_toCharsSafe (exitkind_unparse (s->exitCode))); | |
5910 | ||
5911 | for (i = 0; i < s->nentries; i++) | |
5912 | { | |
5913 | printf ("%s%3d %s\n", ind, i, | |
5914 | cstring_toCharsSafe (uentry_unparseFull (s->entries[i]))); | |
5915 | } | |
5916 | } | |
5917 | ||
5918 | ind[depth * 3 + 1] = ' '; | |
5919 | depth++; | |
5920 | s = s->env; | |
5921 | } | |
5922 | printf ("----------\n"); | |
5923 | } | |
5924 | ||
5925 | void | |
5926 | usymtab_printComplete () | |
5927 | /*@globals utab@*/ | |
5928 | { | |
5929 | int i; | |
5930 | int depth = 0; | |
5931 | char *ind = mstring_copy (" "); | |
5932 | usymtab s = utab; | |
5933 | ||
5934 | while (s != GLOBAL_ENV) | |
5935 | { | |
5936 | if (depth < 5) | |
5937 | { | |
5938 | ind[depth * 3 + 1] = '\0'; | |
5939 | } | |
5940 | ||
5941 | if (s->env == GLOBAL_ENV) | |
5942 | { | |
5943 | int looplow; | |
5944 | ||
5945 | printf ("level: %d\n", s->lexlevel); | |
5946 | ||
5947 | looplow = 0; | |
5948 | ||
5949 | for (i = looplow; i < s->nentries; i++) | |
5950 | { | |
5951 | printf ("%s%3d %s\n", ind, i, | |
02b84d4b | 5952 | cstring_toCharsSafe (uentry_unparseFull (s->entries[i]))); |
616915dd | 5953 | } |
5954 | } | |
5955 | else | |
5956 | { | |
5957 | printf ("level: %d\n", s->lexlevel); | |
5958 | for (i = 0; i < s->nentries; i++) | |
5959 | { | |
5960 | printf ("%s%3d %s\n", ind, i, | |
02b84d4b | 5961 | cstring_toCharsSafe (uentry_unparseFull (s->entries[i]))); |
616915dd | 5962 | } |
5963 | } | |
5964 | ||
5965 | ind[depth * 3 + 1] = ' '; | |
5966 | depth++; | |
5967 | s = s->env; | |
5968 | } | |
5969 | ||
5970 | printf ("----------\n"); | |
5971 | mstring_free (ind); | |
5972 | } | |
5973 | ||
3e3ec469 | 5974 | # ifdef S_SPLINT_S |
616915dd | 5975 | static /*@only@*/ cstring /*@unused@*/ |
5976 | usymtab_unparseLocalAux (/*@notnull@*/ usymtab s) | |
5977 | { | |
5978 | cstring c = message ("lexlevel: %d\n", s->lexlevel); | |
5979 | int i; | |
5980 | ||
5981 | for (i = 0; i < s->nentries; i++) | |
5982 | { | |
5983 | c = message ("%q\n%q", c, uentry_unparseFull (s->entries[i])); | |
5984 | } | |
5985 | ||
5986 | c = message ("%q\n=========", c); | |
5987 | return (c); | |
5988 | } | |
5989 | ||
5990 | static cstring /*@unused@*/ /*@only@*/ | |
5991 | usymtab_unparseLocalList (/*@notnull@*/ usymtab s) | |
5992 | { | |
5993 | cstring c = message ("[%d/%s/%s] ", s->lexlevel, | |
5994 | bool_unparse (s->mustBreak), | |
5995 | exitkind_unparse (s->exitCode)); | |
5996 | int i; | |
5997 | ||
5998 | for (i = 0; i < s->nentries; i++) | |
5999 | { | |
6000 | sRef sr = uentry_getSref (s->entries[i]); | |
6001 | ||
6002 | if (i == 0) | |
6003 | { | |
6004 | c = message ("%q: %q [%b]", c, uentry_getName (s->entries[i]), | |
6005 | sRef_isStateDefined (sr)); | |
6006 | } | |
6007 | else | |
6008 | { | |
6009 | c = message ("%q, %q [%b]", c, uentry_getName (s->entries[i]), | |
6010 | sRef_isStateDefined (sr)); | |
6011 | } | |
6012 | ||
6013 | } | |
6014 | ||
6015 | return (c); | |
6016 | } | |
8250fa4a | 6017 | # endif |
616915dd | 6018 | |
6019 | void | |
6020 | usymtab_printLocal (void) | |
6021 | /*@globals utab@*/ | |
6022 | { | |
6023 | int i; | |
6024 | usymtab s = utab; | |
6025 | ||
6026 | printf ("lexlevel: %d\n", s->lexlevel); | |
6027 | ||
6028 | for (i = 0; i < s->nentries; i++) | |
6029 | { | |
6030 | printf ("%s\n", cstring_toCharsSafe (uentry_unparseFull (s->entries[i]))); | |
6031 | } | |
6032 | ||
6033 | while (s->lexlevel > 1) | |
6034 | { | |
6035 | s = s->env; | |
6036 | } | |
6037 | ||
6038 | llassert (usymtab_isDefined (s)); | |
6039 | ||
6040 | printf ("Params:\n"); | |
6041 | ||
6042 | for (i = 0; i < s->nentries; i++) | |
6043 | { | |
6044 | printf ("%d: %s\n", i, | |
6045 | cstring_toCharsSafe (uentry_unparseFull (s->entries[i]))); | |
6046 | } | |
6047 | } | |
6048 | /*@=mustfree@*/ | |
6049 | ||
6050 | static bool checkDistinctExternalName (uentry e) | |
6051 | /*@globals globtab@*/ | |
80489f0a | 6052 | /*@modifies *g_warningstream@*/ |
616915dd | 6053 | { |
abd7f895 | 6054 | size_t checklen = size_fromInt (context_getValue (FLG_EXTERNALNAMELEN)); |
616915dd | 6055 | bool ignorecase = context_getFlag (FLG_EXTERNALNAMECASEINSENSITIVE); |
6056 | bool gotone = FALSE; | |
6057 | bool extras = FALSE; | |
6058 | bool hasError = FALSE; | |
6059 | cstring name = uentry_rawName (e); | |
6060 | usymtab st = globtab; | |
6061 | ||
6062 | if (checklen == 0) | |
6063 | { | |
6064 | ; | |
6065 | } | |
6066 | else | |
6067 | { | |
6068 | if (uentry_isAnyTag (e)) | |
6069 | { | |
6070 | checklen++; /* the tag marker doesn't count */ | |
6071 | } | |
6072 | } | |
6073 | ||
6074 | usymtab_entries (st, oe) | |
6075 | { | |
6076 | if (uentry_sameObject (oe, e)) | |
6077 | { | |
6078 | continue; | |
6079 | } | |
6080 | ||
6081 | if (checklen == 0) | |
6082 | { | |
6083 | if (cstring_equalCaseInsensitive (uentry_rawName (oe), name)) | |
6084 | { | |
6085 | if (gotone) | |
6086 | { | |
6087 | extras = TRUE; | |
6088 | break; | |
6089 | } | |
6090 | ||
6091 | if (optgenerror | |
6092 | (FLG_DISTINCTEXTERNALNAMES, | |
6093 | message | |
6094 | ("External identifier %q is not distinguishable from %q " | |
6095 | "because alphabetical case is ignored", | |
6096 | uentry_getName (e), | |
6097 | uentry_getName (oe)), | |
6098 | uentry_whereLast (e))) | |
6099 | { | |
6100 | uentry_showWhereAny (oe); | |
6101 | uentry_setHasNameError (oe); | |
6102 | gotone = TRUE; | |
6103 | } | |
6104 | } | |
6105 | } | |
6106 | else | |
6107 | { | |
6108 | if (ignorecase) | |
6109 | { | |
6110 | if (cstring_equalLenCaseInsensitive (uentry_rawName (oe), | |
6111 | name, checklen)) | |
6112 | { | |
6113 | if (gotone) | |
6114 | { | |
6115 | extras = TRUE; | |
6116 | break; | |
6117 | } | |
6118 | ||
6119 | if (cstring_equalLen (uentry_rawName (oe), name, checklen)) | |
6120 | { | |
6121 | if (optgenerror | |
6122 | (FLG_DISTINCTEXTERNALNAMES, | |
6123 | /*@-sefparams@*/ | |
6124 | message | |
6125 | ("External identifier %q is not distinguishable from %q " | |
6126 | "in the first %d characters (%q)", | |
6127 | uentry_getName (e), | |
6128 | uentry_getName (oe), | |
abd7f895 | 6129 | size_toInt (checklen), |
616915dd | 6130 | cstring_clip (uentry_getName (e), checklen)), |
6131 | /*@=sefparams@*/ | |
6132 | uentry_whereLast (e))) | |
6133 | { | |
6134 | uentry_showWhereAny (oe); | |
6135 | uentry_setHasNameError (oe); | |
6136 | gotone = TRUE; | |
6137 | } | |
6138 | } | |
6139 | else | |
6140 | { | |
6141 | if (gotone) | |
6142 | { | |
6143 | extras = TRUE; | |
6144 | break; | |
6145 | } | |
6146 | ||
6147 | if (optgenerror | |
6148 | (FLG_DISTINCTEXTERNALNAMES, | |
6149 | message | |
6150 | ("External identifier %q is not distinguishable from %q " | |
6151 | "in the first %d characters because alphabetical case " | |
6152 | "is ignored", | |
6153 | uentry_getName (e), | |
6154 | uentry_getName (oe), | |
abd7f895 | 6155 | size_toInt (checklen)), |
616915dd | 6156 | uentry_whereLast (e))) |
6157 | { | |
6158 | uentry_showWhereAny (oe); | |
6159 | uentry_setHasNameError (oe); | |
6160 | gotone = TRUE; | |
6161 | } | |
6162 | } | |
6163 | } | |
6164 | } | |
6165 | else if (cstring_equalLen (uentry_rawName (oe), name, checklen)) | |
6166 | { | |
6167 | if (gotone) | |
6168 | { | |
6169 | extras = TRUE; | |
6170 | break; | |
6171 | } | |
6172 | ||
6173 | if (optgenerror | |
6174 | (FLG_DISTINCTEXTERNALNAMES, | |
6175 | /*@-sefparams@*/ | |
6176 | message | |
6177 | ("External identifier %q is not distinguishable from %q " | |
6178 | "in the first %d characters (%q)", | |
6179 | uentry_getName (e), | |
6180 | uentry_getName (oe), | |
abd7f895 | 6181 | size_toInt (checklen), |
616915dd | 6182 | cstring_clip (uentry_getName (e), checklen)), |
6183 | /*@=sefparams@*/ | |
6184 | uentry_whereLast (e))) | |
6185 | { | |
6186 | uentry_showWhereAny (oe); | |
6187 | uentry_setHasNameError (oe); | |
6188 | gotone = TRUE; | |
6189 | } | |
6190 | } | |
6191 | else | |
6192 | { | |
6193 | ; /* okay */ | |
6194 | } | |
6195 | } | |
6196 | } end_usymtab_entries ; | |
6197 | ||
6198 | hasError = gotone; | |
6199 | ||
6200 | if (extras) | |
6201 | { | |
6202 | llgenindentmsgnoloc | |
6203 | (cstring_makeLiteral ("One or more additional " | |
6204 | "indistinguishable external " | |
6205 | "names not reported")); | |
6206 | } | |
6207 | ||
6208 | return hasError; | |
6209 | } | |
6210 | ||
6211 | static bool checkDistinctInternalName (uentry e) | |
6212 | /*@globals utab@*/ | |
80489f0a | 6213 | /*@modifies *g_warningstream@*/ |
616915dd | 6214 | { |
6215 | usymtab ttab = utab; | |
6216 | cstring name = uentry_rawName (e); | |
abd7f895 | 6217 | size_t numchars = size_fromInt (context_getValue (FLG_INTERNALNAMELEN)); |
616915dd | 6218 | bool caseinsensitive = context_getFlag (FLG_INTERNALNAMECASEINSENSITIVE); |
6219 | bool lookalike = context_getFlag (FLG_INTERNALNAMELOOKALIKE); | |
6220 | ||
6221 | if (uentry_isAnyTag (e) && (numchars != 0)) | |
6222 | { | |
6223 | numchars++; /* the tag marker doesn't count */ | |
6224 | } | |
6225 | ||
6226 | while (usymtab_isDefined (ttab)) | |
6227 | { | |
6228 | usymtab_entries (ttab, oe) | |
6229 | { | |
6230 | if (uentry_sameObject (oe, e)) | |
6231 | { | |
6232 | /*@innercontinue@*/ continue; | |
6233 | } | |
6234 | ||
6235 | switch (cstring_genericEqual | |
6236 | (name, uentry_rawName (oe), | |
6237 | numchars, caseinsensitive, lookalike)) | |
6238 | { | |
6239 | case CGE_DISTINCT: /* okay */ | |
6240 | /*@switchbreak@*/ | |
6241 | break; | |
6242 | case CGE_SAME: | |
6243 | if (cstring_equal (name, uentry_rawName (oe))) | |
6244 | { | |
6245 | ; /* got a shadow error */ | |
6246 | } | |
6247 | else | |
6248 | { | |
6249 | if (optgenerror | |
6250 | (FLG_DISTINCTINTERNALNAMES, | |
6251 | /*@-sefparams@*/ | |
6252 | message | |
6253 | ("Internal identifier %q is not distinguishable from %q " | |
6254 | "in the first %d characters (%q)", | |
6255 | uentry_getName (e), | |
6256 | uentry_getName (oe), | |
abd7f895 | 6257 | size_toInt (numchars), |
616915dd | 6258 | cstring_clip (uentry_getName (e), numchars)), |
6259 | /*@=sefparams@*/ | |
6260 | uentry_whereLast (e))) | |
6261 | { | |
6262 | uentry_showWhereAny (oe); | |
6263 | uentry_setHasNameError (oe); | |
6264 | return TRUE; | |
6265 | } | |
6266 | } | |
6267 | /*@switchbreak@*/ | |
6268 | break; | |
6269 | case CGE_CASE: | |
abd7f895 | 6270 | if (numchars == 0 || (cstring_length (name) <= numchars)) |
616915dd | 6271 | { |
6272 | if (optgenerror | |
6273 | (FLG_DISTINCTINTERNALNAMES, | |
6274 | message | |
6275 | ("Internal identifier %q is not distinguishable from %q " | |
6276 | "without case sensitivity", | |
6277 | uentry_getName (e), | |
6278 | uentry_getName (oe)), | |
6279 | uentry_whereLast (e))) | |
6280 | { | |
6281 | uentry_showWhereAny (oe); | |
6282 | uentry_setHasNameError (oe); | |
6283 | return TRUE; | |
6284 | } | |
6285 | } | |
6286 | else | |
6287 | { | |
6288 | if (optgenerror | |
6289 | (FLG_DISTINCTINTERNALNAMES, | |
6290 | message | |
6291 | ("Internal identifier %q is not distinguishable from %q " | |
6292 | "in the first %d characters without case sensitivity", | |
6293 | uentry_getName (e), | |
6294 | uentry_getName (oe), | |
abd7f895 | 6295 | size_toInt (numchars)), |
616915dd | 6296 | uentry_whereLast (e))) |
6297 | { | |
6298 | uentry_showWhereAny (oe); | |
6299 | uentry_setHasNameError (oe); | |
6300 | return TRUE; | |
6301 | } | |
6302 | } | |
6303 | /*@switchbreak@*/ | |
6304 | break; | |
6305 | case CGE_LOOKALIKE: | |
6306 | if (numchars == 0 | |
6307 | || (cstring_length (name) <= numchars)) | |
6308 | { | |
6309 | if (optgenerror | |
6310 | (FLG_DISTINCTINTERNALNAMES, | |
6311 | message | |
6312 | ("Internal identifier %q is not distinguishable from %q " | |
6313 | "except by lookalike characters", | |
6314 | uentry_getName (e), | |
6315 | uentry_getName (oe)), | |
6316 | uentry_whereLast (e))) | |
6317 | { | |
6318 | uentry_showWhereAny (oe); | |
6319 | uentry_setHasNameError (oe); | |
6320 | return TRUE; | |
6321 | } | |
6322 | } | |
6323 | else | |
6324 | { | |
6325 | if (optgenerror | |
6326 | (FLG_DISTINCTINTERNALNAMES, | |
6327 | message | |
6328 | ("Internal identifier %q is not distinguishable from %q " | |
6329 | "in the first %d characters except by lookalike characters", | |
6330 | uentry_getName (e), | |
6331 | uentry_getName (oe), | |
abd7f895 | 6332 | size_toInt (numchars)), |
616915dd | 6333 | uentry_whereLast (e))) |
6334 | { | |
6335 | uentry_showWhereAny (oe); | |
6336 | uentry_setHasNameError (oe); | |
6337 | return TRUE; | |
6338 | } | |
6339 | } | |
6340 | } | |
6341 | } end_usymtab_entries ; | |
6342 | ||
6343 | ttab = ttab->env; | |
6344 | } | |
6345 | ||
6346 | return FALSE; | |
6347 | } | |
6348 | ||
6349 | void usymtab_checkDistinctName (uentry e, int scope) | |
6350 | /*@globals utab, globtab@*/ | |
6351 | { | |
6352 | bool hasError = FALSE; | |
6353 | fileloc where = uentry_whereLast (e); | |
6354 | ||
6355 | if (!fileloc_isPreproc (where) && !fileloc_isBuiltin (where)) | |
6356 | { | |
6357 | if (scope == globScope) | |
6358 | { | |
6359 | if (context_getFlag (FLG_DISTINCTEXTERNALNAMES)) | |
6360 | { | |
6361 | hasError = checkDistinctExternalName (e); | |
6362 | } | |
6363 | } | |
6364 | ||
6365 | if (!hasError && context_getFlag (FLG_DISTINCTINTERNALNAMES)) | |
6366 | { | |
6367 | hasError = checkDistinctInternalName (e); | |
6368 | } | |
6369 | } | |
6370 | ||
6371 | if (hasError) | |
6372 | { | |
28bf4b0b | 6373 | uentry_setHasNameError (e); |
616915dd | 6374 | } |
6375 | } | |
6376 | ||
28bf4b0b | 6377 | /*@exposed@*/ sRef usymtab_lookupGlobalMarker (void) /*@globals utab@*/ |
6378 | { | |
6379 | uentry ue; | |
6380 | ||
6381 | ue = usymtab_lookupAux (utab, GLOBAL_MARKER_NAME); | |
6382 | llassert (uentry_isValid (ue)); | |
6383 | ||
6384 | return uentry_getSref (ue); | |
6385 | } | |
6386 | ||
6483a926 | 6387 | |
6388 | # ifdef DEBUGSPLINT | |
6389 | /* | |
6390 | ** For debugging only | |
6391 | */ | |
6392 | ||
6393 | void | |
6394 | usymtab_checkAllValid () /*@globals utab@*/ | |
6395 | { | |
6396 | usymtab tab = utab; | |
6397 | ||
6398 | while (tab != GLOBAL_ENV) | |
6399 | { | |
6400 | int i; | |
6401 | ||
6402 | for (i = 0; i < utab->nentries; i++) | |
6403 | { | |
6404 | uentry e = utab->entries[i]; | |
6405 | ||
6406 | uentry_checkValid (e); | |
6407 | } | |
6408 | ||
6409 | aliasTable_checkValid (tab->aliases); | |
6410 | tab = tab->env; | |
6411 | } | |
6412 | } | |
6413 | # endif | |
6414 | ||
6415 | ||
6416 | ||
6417 | ||
6418 | ||
6419 |