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