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616915dd | 1 | /* |
11db3170 | 2 | ** Splint - annotation-assisted static program checker |
c59f5181 | 3 | ** Copyright (C) 1994-2003 University of Virginia, |
616915dd | 4 | ** Massachusetts Institute of Technology |
5 | ** | |
6 | ** This program is free software; you can redistribute it and/or modify it | |
7 | ** under the terms of the GNU General Public License as published by the | |
8 | ** Free Software Foundation; either version 2 of the License, or (at your | |
9 | ** option) any later version. | |
10 | ** | |
11 | ** This program is distributed in the hope that it will be useful, but | |
12 | ** WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | ** General Public License for more details. | |
15 | ** | |
16 | ** The GNU General Public License is available from http://www.gnu.org/ or | |
17 | ** the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, | |
18 | ** MA 02111-1307, USA. | |
19 | ** | |
155af98d | 20 | ** For information on splint: info@splint.org |
21 | ** To report a bug: splint-bug@splint.org | |
11db3170 | 22 | ** For more information: http://www.splint.org |
616915dd | 23 | */ |
24 | /* | |
25 | ** usymtab | |
26 | ** | |
27 | ** Lexically scoped symbol table. | |
28 | ** | |
29 | ** Unlike a normal symbol table, this table splits to reflect branches. | |
30 | ** | |
31 | ** This is necessary since symbol table entries also reflect | |
32 | ** some state information, like initialization, that may be | |
33 | ** different on different branches. | |
34 | ** | |
35 | ** For each control structure we split: | |
36 | ** | |
37 | ** { } - a normal scope (no control) US_NORMAL | |
38 | ** | |
39 | ** if <pred> { } - US_TBRANCH true branch | |
40 | ** while <pred> { } US_FBRANCH else branch | |
41 | ** | |
42 | ** switch <pred> { } - US_SWITCH | |
43 | ** | |
44 | ** case x: - case scope US_CBRANCH | |
45 | ** Should be kept in a separate table, because of | |
46 | ** weird C syntax. | |
47 | */ | |
48 | ||
1b8ae690 | 49 | # include "splintMacros.nf" |
616915dd | 50 | # include "basic.h" |
51 | # include "structNames.h" | |
52 | # include "exprChecks.h" | |
28bf4b0b | 53 | # include "transferChecks.h" |
616915dd | 54 | |
3e3ec469 | 55 | /* Needed to install macros when loading libraries */ |
56 | ||
57 | # include "cpplib.h" | |
58 | # include "cpperror.h" | |
59 | # include "cpphash.h" | |
60 | ||
616915dd | 61 | /* |
62 | ** Keep track of type definitions inside a function. | |
63 | */ | |
64 | ||
65 | static uentryList functypes = uentryList_undefined; | |
66 | ||
67 | static bool dbgfree = FALSE; | |
68 | static bool dbgload = TRUE; | |
69 | ||
28bf4b0b | 70 | /*@access ekind@*/ |
616915dd | 71 | |
72 | /* | |
73 | ** Hack to prevent shadow errors from appearing when function parameters | |
74 | ** are entered into a new scope. | |
75 | */ | |
76 | ||
77 | static bool noshadowerror = FALSE; | |
78 | ||
79 | /* | |
80 | ** Constraint: static variables can live in 1 or > 2. | |
81 | ** | |
82 | ** except for tags. All tags must be at the global level. | |
83 | ** Static tags are handled in a kludgey way. | |
84 | */ | |
85 | ||
86 | /* | |
87 | ** utab is the universal symbol table | |
88 | ** globtab is the global environment of utab | |
89 | ** oldtab is needed for conversions in dumping (after sorting the table) | |
90 | ** | |
91 | ** there can be only one usymtab! | |
92 | */ | |
93 | ||
94 | static /*@checkedstrict@*/ /*@owned@*/ /*@notnull@*/ usymtab utab; | |
95 | ||
96 | /* Reachable environments from from utab */ | |
97 | static /*@checkedstrict@*/ /*@notnull@*/ /*@dependent@*/ usymtab globtab; | |
98 | static /*@checkedstrict@*/ /*@dependent@*/ usymtab filetab; | |
99 | ||
100 | /* Used for sorting for dumpage. */ | |
101 | static /*@checkedstrict@*/ /*@owned@*/ usymtab oldtab; | |
102 | ||
103 | static int usymtab_lexicalLevel (void) /*@globals utab@*/ ; | |
28bf4b0b | 104 | static bool usymtab_isAltDefinitelyNull (sRef p_s) /*@globals utab@*/ ; |
616915dd | 105 | static void refTable_free (/*@only@*/ /*@null@*/ refTable p_x, int p_nentries); |
106 | static ctype usymtab_suFieldsType (uentryList p_f, bool p_isStruct) /*@globals globtab@*/ ; | |
107 | ||
6fcd0b1e | 108 | static void usymtab_freeAux (/*@only@*/ usymtab p_u) |
109 | /*@globals globtab, utab, filetab@*/ | |
110 | /*@modifies p_u@*/ ; | |
111 | ||
28bf4b0b | 112 | extern int usymtab_getCurrentDepth (void) /*@globals utab@*/ |
113 | { | |
114 | return utab->lexlevel; | |
115 | } | |
116 | ||
616915dd | 117 | static void |
118 | usymtab_freeLevel (/*@notnull@*/ /*@only@*/ usymtab p_u) | |
119 | /*@globals globtab, utab, filetab@*/ /*@modifies p_u@*/ ; | |
120 | ||
28bf4b0b | 121 | static bool usymtab_isDefinitelyNullAux (sRef p_s) /*@globals utab@*/ ; |
616915dd | 122 | static /*@only@*/ cstring usymtab_unparseStackTab (usymtab p_t); |
123 | static /*@exposed@*/ /*@dependent@*/ uentry | |
124 | usymtab_getRefTab (/*@notnull@*/ usymtab p_u, int p_level, usymId p_index); | |
8250fa4a | 125 | |
3e3ec469 | 126 | # ifdef S_SPLINT_S |
8250fa4a | 127 | /* These are not used anymore... */ |
616915dd | 128 | static /*@unused@*/ /*@only@*/ cstring |
129 | usymtab_unparseLocalAux (/*@notnull@*/ usymtab p_s); | |
130 | static /*@unused@*/ /*@only@*/ cstring | |
131 | usymtab_unparseLocalList (/*@notnull@*/ usymtab p_s); | |
8250fa4a | 132 | # endif |
133 | ||
616915dd | 134 | static /*@only@*/ cstring usymtab_typeName (/*@notnull@*/ usymtab p_t); |
135 | static void usymtab_handleParams (void) | |
136 | /*@globals utab, globtab, filetab@*/ | |
137 | /*@modifies utab@*/ ; | |
138 | ||
139 | static /*@exposed@*/ /*@dependent@*/ uentry | |
140 | usymtab_addRefEntry (/*@notnull@*/ usymtab p_s, cstring p_k); | |
141 | static /*@exposed@*/ /*@dependent@*/ usymtab | |
142 | usymtab_dropEnv (/*@notnull@*/ usymtab p_s); | |
143 | static /*@exposed@*/ /*@dependent@*/ uentry | |
144 | usymtab_getRefNoisy (/*@notnull@*/ usymtab p_s, int p_level, usymId p_index); | |
145 | ||
28bf4b0b | 146 | static /*@exposed@*/ /*@dependent@*/ uentry |
147 | usymtab_lookupQuietAux (usymtab p_s, cstring p_k, bool p_noalt); | |
148 | ||
616915dd | 149 | static /*@exposed@*/ /*@dependent@*/ uentry |
150 | usymtab_lookupQuiet (usymtab p_s, cstring p_k); | |
28bf4b0b | 151 | |
152 | static /*@exposed@*/ /*@dependent@*/ uentry | |
153 | usymtab_lookupQuietNoAlt (usymtab p_s, cstring p_k); | |
154 | ||
80489f0a | 155 | static void usymtab_printAllAux (usymtab p_s) /*@modifies g_warningstream@*/ ; |
616915dd | 156 | static int usymtab_getIndex (/*@notnull@*/ usymtab p_s, cstring p_k); |
157 | static /*@exposed@*/ uentry usymtab_fetchIndex (/*@notnull@*/ usymtab p_s, int p_i); | |
158 | static /*@exposed@*/ uentry | |
159 | usymtab_lookupAux (usymtab p_s, cstring p_k); | |
160 | static /*@exposed@*/ /*@dependent@*/ /*@notnull@*/ usymtab | |
161 | usymtab_getFileTab (void) /*@globals filetab@*/ ; | |
162 | static int refTable_lookup (/*@notnull@*/ usymtab p_ut, int p_level, int p_index); | |
163 | static bool usymtab_mustBreak (usymtab p_s); | |
164 | static bool usymtab_mustEscape (usymtab p_s); | |
165 | ||
166 | static void recordFunctionType (uentry ue) | |
167 | { | |
7ebcc5bb | 168 | llassert (uentry_isDatatype (ue) || uentry_isAnyTag (ue) |
616915dd | 169 | || uentry_isEnumConstant (ue)); |
7ebcc5bb | 170 | DPRINTF (("Function type: %s", uentry_unparseFull (ue))); |
616915dd | 171 | /*@-temptrans@*/ |
172 | functypes = uentryList_add (functypes, ue); | |
173 | /*@=temptrans@*/ | |
174 | } | |
175 | ||
176 | static void clearFunctionTypes (void) | |
177 | /*@modifies globtab@*/ | |
178 | { | |
179 | uentryList_elements (functypes, el) | |
180 | { | |
181 | if (cstring_isDefined (uentry_rawName (el))) | |
182 | { | |
28bf4b0b | 183 | if (cstringTable_isDefined (globtab->htable)) |
616915dd | 184 | { |
28bf4b0b | 185 | cstringTable_remove (globtab->htable, uentry_rawName (el)); |
616915dd | 186 | } |
187 | ||
188 | uentry_setName (el, cstring_undefined); | |
189 | } | |
190 | ||
191 | /*@access uentry@*/ | |
192 | llassert (uentry_isValid (el)); | |
193 | el->sref = sRef_undefined; | |
194 | /*@noaccess uentry@*/ | |
195 | } end_uentryList_elements ; | |
196 | ||
197 | uentryList_clear (functypes); | |
198 | } | |
199 | ||
0e41eb0e | 200 | static /*@falsewhennull@*/ bool usymtab_isBranch (usymtab u) |
616915dd | 201 | { |
202 | return (usymtab_isDefined (u) && | |
203 | (u->kind == US_TBRANCH || u->kind == US_FBRANCH | |
204 | || u->kind == US_CBRANCH || u->kind == US_SWITCH)); | |
205 | } | |
206 | ||
207 | static bool usymtab_mustBreak (usymtab s) | |
208 | { | |
209 | llassert (s != GLOBAL_ENV); | |
210 | return (s->mustBreak); | |
211 | } | |
212 | ||
213 | static bool usymtab_mustEscape (usymtab s) | |
214 | { | |
215 | llassert (s != GLOBAL_ENV); | |
216 | return (exitkind_mustEscape (s->exitCode)); | |
217 | } | |
218 | ||
219 | void usymtab_setMustBreak () | |
220 | /*@modifies utab@*/ | |
221 | { | |
222 | llassert (utab != GLOBAL_ENV); | |
223 | utab->mustBreak = TRUE; | |
224 | } | |
225 | ||
226 | void usymtab_setExitCode (exitkind ex) | |
227 | /*@modifies utab@*/ | |
228 | { | |
229 | llassert (utab != GLOBAL_ENV); | |
230 | ||
231 | utab->exitCode = ex; | |
232 | ||
233 | if (exitkind_mustEscape (ex)) | |
234 | { | |
235 | utab->mustBreak = TRUE; | |
236 | } | |
237 | } | |
238 | ||
28bf4b0b | 239 | bool usymtab_isAltDefinitelyNullDeep (sRef s) |
616915dd | 240 | { |
28bf4b0b | 241 | return (sRef_deepPred (usymtab_isAltDefinitelyNull, s)); |
616915dd | 242 | } |
243 | ||
28bf4b0b | 244 | static bool usymtab_isAltDefinitelyNull (sRef s) |
616915dd | 245 | /*@globals utab@*/ |
246 | { | |
247 | guardSet t; | |
248 | bool res; | |
249 | ||
250 | t = utab->guards; | |
251 | ||
252 | llassert (utab->env != NULL); | |
253 | ||
254 | /*@-mods@*/ /* These modifications are cancelled. */ | |
255 | utab->guards = utab->env->guards; | |
256 | utab->env->guards = t; | |
257 | /*@=mods@*/ | |
258 | ||
259 | llassert (usymtab_isDefined (utab)); | |
28bf4b0b | 260 | res = usymtab_isDefinitelyNull (s); |
616915dd | 261 | |
262 | /* | |
263 | ** This reports a spurious error. It is okay, because of | |
264 | ** the nesting relationship of usymtab environments. | |
265 | */ | |
266 | ||
267 | /*@-mods@*/ /* Cancelling modifications. */ | |
268 | /*@i1@*/ utab->env->guards = utab->guards; | |
269 | /*@i1@*/ utab->guards = t; | |
270 | /*@=mods@*/ | |
271 | ||
272 | return res; | |
273 | } | |
274 | ||
275 | static /*@notnull@*/ /*@special@*/ usymtab | |
276 | usymtab_create (uskind kind, /*@keep@*/ usymtab env, bool nextlevel) | |
277 | /*@defines result@*/ | |
278 | /*@post:isnull result->htable, result->guards, result->aliases@*/ | |
279 | { | |
280 | usymtab t = (usymtab) dmalloc (sizeof (*t)); | |
281 | ||
282 | t->nentries = 0; | |
283 | t->nspace = CBASESIZE; | |
284 | t->entries = (uentry *) dmalloc (sizeof (*t->entries) * CBASESIZE); | |
28bf4b0b | 285 | |
286 | /* We only use a reftable for branch-level symbol tables. | |
287 | */ | |
288 | ||
616915dd | 289 | t->reftable = (nextlevel |
290 | ? NULL | |
291 | : (refentry *) dmalloc (sizeof (*t->reftable) * CBASESIZE)); | |
292 | ||
293 | t->kind = kind; | |
294 | t->lexlevel = (env == GLOBAL_ENV ? 0 : env->lexlevel) + (nextlevel ? 1 : 0); | |
28bf4b0b | 295 | |
616915dd | 296 | t->env = env; |
297 | t->htable = NULL; | |
298 | ||
299 | t->guards = guardSet_undefined; | |
300 | t->aliases = aliasTable_undefined; | |
301 | ||
28bf4b0b | 302 | t->mustBreak = FALSE; |
616915dd | 303 | t->exitCode = XK_NEVERESCAPE; |
6fcd0b1e | 304 | |
305 | DPRINTF (("Create usymtab [%p]", t)); | |
616915dd | 306 | return t; |
307 | } | |
308 | ||
309 | /* | |
310 | ** constructors | |
311 | */ | |
312 | ||
313 | static /*@only@*/ /*@notnull@*/ usymtab | |
314 | usymtab_createRoot (void) /*@modifies nothing@*/ | |
315 | { | |
316 | usymtab u = (usymtab) dmalloc (sizeof (*u)); | |
317 | ||
318 | u->nentries = 0; | |
319 | u->nspace = CGLOBBASESIZE; | |
320 | u->entries = (uentry *) dmalloc (sizeof (*u->entries) * CGLOBBASESIZE); | |
321 | u->env = GLOBAL_ENV; | |
322 | u->lexlevel = 0; | |
28bf4b0b | 323 | u->htable = cstringTable_create (CGLOBHASHSIZE); |
616915dd | 324 | u->reftable = NULL; |
28bf4b0b | 325 | |
616915dd | 326 | u->guards = guardSet_new (); |
327 | u->aliases = aliasTable_new (); | |
328 | ||
329 | u->mustBreak = FALSE; | |
330 | u->exitCode = XK_NEVERESCAPE; | |
331 | u->kind = US_NORMAL; | |
332 | ||
28bf4b0b | 333 | return (u); |
616915dd | 334 | } |
335 | ||
336 | void | |
337 | usymtab_initMod (void) | |
338 | /*@globals undef utab, undef oldtab, undef globtab, undef filetab @*/ | |
339 | /*@modifies utab, globtab, filetab, oldtab @*/ | |
340 | { | |
341 | utab = usymtab_createRoot (); | |
342 | globtab = utab; | |
343 | filetab = usymtab_undefined; | |
344 | oldtab = usymtab_undefined; | |
345 | } | |
346 | ||
6fcd0b1e | 347 | void |
348 | usymtab_destroyMod (void) /*@modifies utab, globtab, filetab@*/ /*@globals killed utab@*/ | |
349 | { | |
350 | DPRINTF (("Destroy usymtab [%p]: %d", utab, utab->nentries)); | |
351 | usymtab_freeAux (utab); | |
352 | utab = usymtab_undefined; | |
53306cab | 353 | /*@-globstate@*/ |
354 | } /*@=globstate@*/ | |
28bf4b0b | 355 | |
356 | void | |
357 | usymtab_initGlobalMarker () /*@globals globtab@*/ | |
358 | { | |
359 | if (uentry_isValid (usymtab_lookupAux (globtab, GLOBAL_MARKER_NAME))) | |
360 | { | |
361 | ; /* Already entered from load table. */ | |
362 | } | |
363 | else | |
364 | { | |
365 | usymtab_addGlobalEntry (uentry_makeGlobalMarker ()); | |
366 | } | |
367 | } | |
368 | ||
616915dd | 369 | /* |
370 | ** utab should be empty? (requires?) | |
371 | ** | |
372 | ** Adds bool types to symbol table (these are built in for now) | |
373 | ** Only do this is there is no library! | |
374 | */ | |
375 | ||
376 | void | |
377 | usymtab_initBool () | |
378 | { | |
2cecdaff | 379 | DPRINTF (("Init bool!")); |
380 | ||
616915dd | 381 | if (context_getFlag (FLG_NOLIB)) |
382 | { | |
383 | ctype boolt = ctype_bool; | |
384 | /* evs 2000-07-24: bool is now treated as abstract (always) */ | |
385 | ||
e5081f8c | 386 | uentry boolentry = uentry_makeBoolDatatype (qual_createAbstract ()); |
616915dd | 387 | usymtab_supGlobalEntry (boolentry); |
388 | context_addBoolAccess (); | |
389 | ||
390 | /* | |
391 | ** We supply values 0 and 1 for the constants, so things like | |
392 | ** while (TRUE) can be interpreted correctly. | |
393 | */ | |
394 | ||
395 | usymtab_supGlobalEntry | |
5e211f69 | 396 | (uentry_makeConstantValue (context_getFalseName (), boolt, |
397 | fileloc_getBuiltin (), FALSE, | |
398 | multiVal_makeInt (0))); | |
3e3ec469 | 399 | |
616915dd | 400 | usymtab_supGlobalEntry |
5e211f69 | 401 | (uentry_makeConstantValue (context_getTrueName (), boolt, |
402 | fileloc_getBuiltin (), FALSE, | |
403 | multiVal_makeInt (1))); | |
616915dd | 404 | } |
405 | } | |
406 | ||
407 | /* | |
408 | ** mutators | |
409 | */ | |
410 | ||
411 | static void | |
412 | usymtab_grow (/*@notnull@*/ usymtab s) | |
413 | { | |
414 | int i; | |
415 | o_uentry *oldsyms = s->entries; | |
416 | ||
417 | s->nspace = CBASESIZE; | |
418 | s->entries = (uentry *) dmalloc (sizeof (*s->entries) | |
419 | * (s->nentries + s->nspace)); | |
420 | ||
421 | for (i = 0; i < s->nentries; i++) | |
422 | { | |
423 | s->entries[i] = oldsyms[i]; | |
424 | } | |
425 | ||
426 | sfree (oldsyms); | |
427 | ||
428 | if (s->reftable != NULL) | |
429 | { | |
430 | refTable oldRefs = s->reftable; | |
431 | ||
432 | s->reftable = (refentry *) dmalloc (sizeof (*s->reftable) | |
433 | * (s->nentries + CBASESIZE + 1)); | |
434 | ||
435 | for (i = 0; i < s->nentries; i++) | |
436 | { | |
437 | s->reftable[i] = oldRefs[i]; | |
438 | } | |
439 | ||
440 | /*@-compdestroy@*/ | |
441 | sfree (oldRefs); | |
442 | /*@=compdestroy@*/ | |
443 | } | |
444 | ||
445 | } | |
446 | ||
447 | static void | |
448 | usymtab_addEntryQuiet (/*@notnull@*/ usymtab s, /*@keep@*/ uentry e) | |
449 | { | |
450 | if (!(s->lexlevel > fileScope || !sRef_modInFunction ())) | |
451 | { | |
452 | if (uentry_isDatatype (e) | |
453 | || uentry_isFunction (e) | |
454 | || uentry_isAnyTag (e) | |
455 | || uentry_isEnumConstant (e) | |
456 | || context_inMacro ()) | |
457 | { | |
458 | /* | |
459 | ** Not a bug. Code like, | |
460 | ** int f (void) { typedef int tint; ... } | |
461 | ** is legal. | |
462 | */ | |
463 | ||
464 | /* was nothing here! */ | |
465 | /*@i@*/ e->sref = sRef_saveCopy (e->sref); | |
466 | } | |
467 | else | |
468 | { | |
469 | llparseerror | |
470 | (cstring_makeLiteral ("Declaration outside function scope")); | |
471 | ||
472 | llcontbug (message ("usymtab_addEntryQuiet: inconsistent state " | |
473 | "(lexlevel = %d, modFunction = %s) adding: %q", | |
474 | s->lexlevel, bool_unparse (sRef_modInFunction ()), | |
475 | uentry_unparse (e))); | |
476 | sRef_setGlobalScope (); | |
477 | /* make sure the sRef is not bashed! */ | |
478 | /*@i@*/ e->sref = sRef_saveCopy (e->sref); | |
479 | } | |
480 | } | |
481 | ||
482 | if (s->nspace <= 0) | |
483 | { | |
484 | usymtab_grow (s); | |
485 | } | |
486 | ||
487 | s->nspace--; | |
488 | s->entries[s->nentries] = e; | |
489 | ||
490 | # ifdef DOANNOTS | |
491 | if (s == globtab || s == filetab) | |
492 | { | |
493 | if (!fileloc_isLib (g_currentloc)) | |
494 | { | |
495 | uentry_tallyAnnots (e, AN_UNKNOWN); | |
496 | } | |
497 | } | |
498 | # endif | |
499 | ||
28bf4b0b | 500 | if (cstringTable_isDefined (s->htable)) |
616915dd | 501 | { |
28bf4b0b | 502 | cstringTable_insert (s->htable, cstring_copy (uentry_rawName (e)), s->nentries); |
616915dd | 503 | } |
504 | ||
505 | s->nentries++; | |
506 | } | |
507 | ||
508 | static /*@observer@*/ uentry /*@alt void@*/ | |
509 | usymtab_addEntryBase (/*@notnull@*/ usymtab s, /*@only@*/ uentry e) | |
510 | { | |
511 | /* | |
512 | ** In theory, we shouldn't need this test because it this is | |
513 | ** only called when a library is being read, and it shouldn't | |
514 | ** ever have a duplicate entry. In practice, its safer to | |
515 | ** leave it in, though. | |
516 | */ | |
517 | ||
518 | uentry old; | |
519 | ||
520 | if (uentry_isValid (old = usymtab_lookupQuiet (s, uentry_rawName (e)))) | |
521 | { | |
522 | DPRINTF (("Duplicate entry: %s", uentry_unparse (e))); | |
523 | uentry_free (e); /* duplicate */ | |
524 | return old; | |
525 | } | |
526 | else | |
527 | { | |
528 | int thisentry = s->nentries; | |
529 | ||
530 | if (uentry_isVar (e)) | |
531 | { | |
16c024b5 | 532 | uentry_setSref |
533 | (e, sRef_makeCvar (globScope, thisentry, | |
534 | uentry_getType (e), | |
535 | stateInfo_makeLoc (uentry_whereLast (e), SA_DECLARED))); | |
616915dd | 536 | } |
537 | ||
538 | usymtab_addEntryQuiet (s, e); | |
539 | return e; | |
540 | } | |
541 | } | |
542 | ||
28bf4b0b | 543 | |
544 | static /*@observer@*/ uentry /*@alt void@*/ | |
545 | usymtab_addEntryAlways (/*@notnull@*/ usymtab s, /*@only@*/ uentry e) | |
546 | { | |
547 | /* | |
548 | ** In theory, we shouldn't need this test because it this is | |
549 | ** only called when a library is being read, and it shouldn't | |
550 | ** ever have a duplicate entry. In practice, its safer to | |
551 | ** leave it in, though. | |
552 | */ | |
553 | ||
554 | uentry old; | |
555 | int thisentry = s->nentries; | |
556 | ||
557 | if (uentry_isValid (old = usymtab_lookupQuiet (s, uentry_rawName (e)))) | |
558 | { | |
559 | llcontbug | |
560 | (message ("Duplicate entry in load library: %s. " | |
561 | "Old entry: %q. New entry: %q", | |
562 | uentry_rawName (e), | |
563 | uentry_unparseFull (old), | |
564 | uentry_unparseFull (e))); | |
565 | ||
566 | uentry_setName (e, message ("__x_%s", uentry_rawName (e))); | |
567 | /* This shouldn't happen...unless the library is bad! */ | |
568 | } | |
569 | ||
570 | ||
571 | if (uentry_isVar (e) && !uentry_isGlobalMarker (e)) | |
572 | { | |
16c024b5 | 573 | uentry_setSref |
574 | (e, sRef_makeCvar (globScope, thisentry, | |
575 | uentry_getType (e), | |
576 | stateInfo_makeLoc (uentry_whereLast (e), SA_DECLARED))); | |
28bf4b0b | 577 | } |
578 | ||
579 | usymtab_addEntryQuiet (s, e); | |
580 | return e; | |
581 | } | |
582 | ||
616915dd | 583 | static usymId |
584 | usymtab_addEntryAux (/*@notnull@*/ usymtab st, /*@keep@*/ uentry e, bool isSref) | |
585 | /*@globals globtab@*/ | |
586 | /*@modifies st, e@*/ | |
587 | { | |
588 | usymId thisentry = st->nentries; | |
589 | ||
590 | llassert (!uentry_isElipsisMarker (e)); | |
591 | ||
592 | /* | |
593 | ** not true for tags | |
594 | ** llassert (usymtab_lookupSafe (uentry_rawName (e)) == uentry_undefined); | |
595 | **/ | |
596 | ||
597 | llassertprint (uentry_isAnyTag (e) ? st == globtab : TRUE, | |
598 | ("non-global tag: %s / %d", uentry_unparseFull (e), st->lexlevel)); | |
599 | ||
600 | if (st->lexlevel == fileScope | |
601 | && (!(uentry_isStatic (e)) || uentry_isAnyTag (e))) | |
602 | { | |
603 | st = globtab; | |
604 | } | |
605 | ||
606 | if (isSref) | |
607 | { | |
608 | ctype ct = uentry_getType (e); | |
609 | ||
610 | if (uentry_isFunction (e) && ctype_isFunction (ct)) | |
611 | { | |
28bf4b0b | 612 | ct = ctype_getReturnType (ct); |
616915dd | 613 | } |
614 | ||
615 | if (uentry_isStatic (e)) | |
616 | { | |
16c024b5 | 617 | sRef sr = sRef_makeCvar (st->lexlevel, thisentry, ct, |
618 | stateInfo_makeLoc (uentry_whereLast (e), SA_DECLARED)); | |
616915dd | 619 | |
620 | if (sRef_isStack (sr) || sRef_isLocalState (sr)) | |
621 | { | |
622 | sRef_setAliasKind (sr, AK_STATIC, uentry_whereLast (e)); | |
623 | sRef_setDefined (sr, uentry_whereLast (e)); | |
624 | } | |
625 | ||
626 | uentry_setSref (e, sr); | |
627 | } | |
628 | else | |
629 | { | |
16c024b5 | 630 | uentry_setSref |
631 | (e, sRef_makeCvar (st->lexlevel, thisentry, ct, | |
632 | stateInfo_makeLoc (uentry_whereLast (e), SA_DECLARED))); | |
616915dd | 633 | } |
6970c11b | 634 | } |
616915dd | 635 | |
636 | if (uentry_isDatatype (e)) | |
637 | { | |
638 | ||
639 | uentry_setDatatype (e, thisentry); | |
640 | } | |
641 | ||
642 | if (uentry_isFunction (e)) | |
643 | { | |
644 | ctype ct = uentry_getType (e); | |
645 | ||
646 | if (ctype_isFunction (ct) | |
647 | && uentryList_isMissingParams (ctype_argsFunction (ct))) | |
648 | { | |
649 | if (uentry_isDeclared (e)) | |
650 | { | |
651 | voptgenerror | |
652 | (FLG_NOPARAMS, | |
653 | message ("Function %q declared without parameter list", | |
654 | uentry_getName (e)), | |
655 | uentry_whereDeclared (e)); | |
656 | } | |
657 | else | |
658 | { | |
659 | voptgenerror | |
660 | (FLG_NOPARAMS, | |
661 | message ("Function %q specified without parameter list", | |
662 | uentry_getName (e)), | |
663 | uentry_whereSpecified (e)); | |
664 | } | |
665 | } | |
666 | } | |
667 | ||
668 | if (st == globtab && !uentry_isSpecified (e)) | |
669 | { | |
670 | exprChecks_checkExport (e); | |
671 | } | |
672 | ||
616915dd | 673 | uentry_checkName (e); |
674 | ||
675 | usymtab_addEntryQuiet (st, e); | |
28bf4b0b | 676 | DPRINTF (("Adding entry: [%p] %s", e, uentry_unparseFull (e))); |
616915dd | 677 | return (thisentry); |
678 | } | |
679 | ||
680 | usymId | |
681 | usymtab_addEntry (uentry e) | |
682 | /*@globals utab, globtab@*/ | |
683 | /*@modifies utab, e@*/ | |
28bf4b0b | 684 | { |
616915dd | 685 | llassertprint (!usymtab_exists (uentry_rawName (e)), |
686 | ("Entry already exists: %s", uentry_unparse (e))); | |
687 | ||
688 | return usymtab_addEntryAux (utab, e, FALSE); | |
689 | } | |
690 | ||
691 | void | |
692 | usymtab_addGlobalEntry (uentry e) | |
693 | /*@modifies globtab, e@*/ | |
694 | { | |
695 | DPRINTF (("Add global: %s / %s", uentry_unparse (e), bool_unparse (uentry_isForward (e)))); | |
696 | ||
697 | (void) usymtab_addEntryAux (globtab, e, FALSE); | |
698 | } | |
699 | ||
700 | /* | |
701 | ** supercede and replace entry use elements of entries array, and | |
702 | ** assign an element to a new value, and then free the old value. | |
703 | ** Need -deparrays to avoid errors for this. | |
704 | */ | |
705 | ||
706 | /*@-deparrays@*/ | |
707 | ||
708 | static usymId | |
709 | usymtab_supEntryAux (/*@notnull@*/ usymtab st, | |
710 | /*@only@*/ uentry e, bool isSref) | |
711 | /*@globals globtab, filetab@*/ | |
712 | /*@modifies st, globtab, e@*/ | |
713 | { | |
714 | cstring ename = uentry_rawName (e); | |
715 | bool staticEntry = FALSE; | |
716 | int eindex; | |
717 | ||
28bf4b0b | 718 | DPRINTF (("Sup entry aux: %s", uentry_unparseFull (e))); |
719 | ||
616915dd | 720 | /* static tags in global scope */ |
721 | if (st->lexlevel == fileScope | |
722 | && (!(uentry_isStatic (e)) || uentry_isAnyTag (e))) | |
723 | { | |
724 | eindex = usymtab_getIndex (st, ename); | |
725 | ||
726 | if (eindex != NOT_FOUND) | |
727 | { | |
728 | uentry ce = st->entries[eindex]; | |
729 | ||
730 | if (optgenerror | |
731 | (FLG_SHADOW, | |
732 | message ("%s %q shadows static declaration", | |
733 | ekind_capName (uentry_getKind (e)), | |
734 | uentry_getName (e)), | |
735 | uentry_whereDeclared (e))) | |
736 | { | |
737 | uentry_showWhereLast (ce); | |
738 | } | |
739 | ||
740 | if (eindex == st->nentries - 1) | |
741 | { | |
742 | ; | |
743 | } | |
744 | else | |
745 | { | |
746 | st->entries[eindex] = st->entries[st->nentries - 1]; | |
747 | } | |
748 | ||
28bf4b0b | 749 | if (cstringTable_isDefined (st->htable)) |
616915dd | 750 | { |
28bf4b0b | 751 | cstringTable_replaceKey (st->htable, uentry_rawName (ce), |
752 | cstring_copy (uentry_rawName (e))); | |
616915dd | 753 | } |
754 | ||
755 | uentry_free (ce); | |
756 | st->nentries--; | |
757 | } | |
758 | ||
759 | st = globtab; | |
760 | } | |
761 | ||
762 | if (uentry_isStatic (e)) { | |
763 | if (uentry_isFunction (e)) { | |
28bf4b0b | 764 | /* |
765 | ** Static function declarations are at the file level, | |
766 | ** even if they are in a deeper scope. | |
767 | */ | |
768 | ||
616915dd | 769 | st = usymtab_getFileTab (); |
770 | staticEntry = TRUE; | |
771 | } else { | |
772 | if (!uentry_isAnyTag (e) && st == globtab) | |
773 | { | |
774 | st = usymtab_getFileTab (); | |
775 | staticEntry = TRUE; | |
776 | DPRINTF (("Static entry!")); | |
777 | } | |
778 | } | |
779 | } | |
780 | ||
616915dd | 781 | eindex = usymtab_getIndex (st, ename); |
782 | ||
783 | if (eindex != NOT_FOUND) | |
784 | { | |
785 | uentry ce = st->entries[eindex]; | |
28bf4b0b | 786 | |
616915dd | 787 | DPRINTF (("Found entry: %s", uentry_unparse (ce))); |
788 | ||
789 | if (uentry_isPriv (ce) | |
790 | /* || (fileloc_isImport (uentry_whereSpecified (ce))) */ | |
791 | || (uentry_isStatic (ce) | |
792 | && uentry_isAnyTag (ce) | |
793 | && (uentry_isDeclared (ce) | |
794 | && !fileloc_sameFile (uentry_whereDefined (ce), | |
795 | uentry_whereDefined (e))))) | |
796 | { | |
797 | /* | |
798 | ** overload entry | |
799 | ** if overloading import should do some checks! | |
800 | */ | |
801 | ||
802 | llassert ((st->lexlevel > fileScope || !sRef_modInFunction ())); | |
803 | ||
28bf4b0b | 804 | DPRINTF (("Overloading!")); |
805 | ||
616915dd | 806 | st->entries[eindex] = e; |
807 | ||
808 | if (uentry_isDatatype (e)) | |
809 | { | |
810 | uentry_setDatatype (e, eindex); | |
811 | } | |
812 | ||
813 | if (st == globtab && !uentry_isSpecified (e)) | |
814 | { | |
815 | exprChecks_checkExport (e); | |
816 | } | |
817 | ||
28bf4b0b | 818 | if (cstringTable_isDefined (st->htable)) |
616915dd | 819 | { |
28bf4b0b | 820 | cstringTable_replaceKey (st->htable, uentry_rawName (ce), |
821 | cstring_copy (uentry_rawName (e))); | |
616915dd | 822 | } |
823 | ||
824 | uentry_free (ce); | |
825 | ce = e; | |
826 | } | |
827 | else if (uentry_isSpecified (ce)) | |
828 | { | |
829 | if (uentry_isSpecified (e)) | |
830 | { | |
28bf4b0b | 831 | DPRINTF (("Here we are: %s", uentry_unparseFull (e))); |
832 | ||
616915dd | 833 | if (fileloc_isImport (uentry_whereSpecified (ce))) |
28bf4b0b | 834 | { |
835 | if (cstringTable_isDefined (st->htable)) | |
616915dd | 836 | { |
28bf4b0b | 837 | cstringTable_replaceKey (st->htable, |
838 | uentry_rawName (ce), | |
839 | cstring_copy (uentry_rawName (e))); | |
616915dd | 840 | } |
841 | ||
842 | uentry_free (ce); | |
843 | st->entries[eindex] = e; | |
844 | ce = e; | |
845 | ||
846 | if (uentry_isDatatype (e)) uentry_setDatatype (e, eindex); | |
847 | } | |
848 | else | |
849 | { | |
850 | if (fileloc_isImport (uentry_whereSpecified (e))) | |
851 | { | |
852 | uentry_free (e); | |
853 | } | |
854 | else | |
855 | { | |
28bf4b0b | 856 | /* Respecification errors already reported */ |
857 | DPRINTF (("Respecification: %s / %s", | |
858 | fileloc_unparse (uentry_whereSpecified (e)), | |
859 | bool_unparse (fileloc_isSpec (uentry_whereSpecified (e))))); | |
860 | ||
616915dd | 861 | if (uentry_isDatatype (e)) |
862 | { | |
863 | uentry_setDatatype (e, eindex); | |
864 | } | |
865 | ||
28bf4b0b | 866 | if (cstringTable_isDefined (st->htable)) |
616915dd | 867 | { |
28bf4b0b | 868 | cstringTable_replaceKey (st->htable, |
869 | uentry_rawName (ce), | |
870 | cstring_copy (uentry_rawName (e))); | |
616915dd | 871 | } |
872 | ||
873 | llassert ((st->lexlevel > fileScope || !sRef_modInFunction ())); | |
874 | uentry_free (ce); | |
875 | st->entries[eindex] = e; | |
876 | ce = e; | |
877 | } | |
878 | } | |
879 | } | |
880 | else /* e not specified */ | |
881 | { | |
28bf4b0b | 882 | DPRINTF (("Merging...")); |
883 | ||
616915dd | 884 | if (uentry_isDeclared (ce)) |
885 | { | |
1d239d69 | 886 | /* evans 2001-08-26 |
887 | No - this can happen for internal typedefs | |
888 | llassert ((st->lexlevel > fileScope || !sRef_modInFunction ())); | |
889 | */ | |
890 | ||
28bf4b0b | 891 | DPRINTF (("Merge defn")); |
616915dd | 892 | uentry_mergeDefinition (ce, e); |
893 | } | |
894 | else | |
895 | { | |
1d239d69 | 896 | /* evans 2001-08-26 |
897 | No - this can happen for internal typedefs | |
898 | llassert ((st->lexlevel > fileScope || !sRef_modInFunction ())); | |
899 | */ | |
900 | ||
28bf4b0b | 901 | DPRINTF (("Merge entries...")); |
616915dd | 902 | uentry_mergeEntries (ce, e); |
28bf4b0b | 903 | DPRINTF (("After: %s", uentry_unparseFull (ce))); |
616915dd | 904 | } |
905 | } | |
906 | } | |
907 | else /* ce not specified */ | |
908 | { | |
909 | if (!(st->lexlevel > fileScope || !sRef_modInFunction ())) | |
910 | { | |
911 | if (uentry_isDatatype (e) || uentry_isAnyTag (e) | |
140c27a8 | 912 | || uentry_isEnumConstant (e) |
913 | || uentry_isStatic (e)) /* bug fix from Brian St. Pierre */ | |
616915dd | 914 | { |
915 | ; /* | |
916 | ** Not a bug. Code like, | |
917 | ** int f (void) { typedef int tint; ... } | |
918 | ** is legal. | |
919 | */ | |
920 | } | |
921 | else | |
922 | { | |
923 | llcontbug (message ("usymtab_supEntryAux: inconsistent state " | |
924 | "(lexlevel = %d, modFunction = %s) adding: %q", | |
925 | st->lexlevel, bool_unparse (sRef_modInFunction ()), | |
926 | uentry_unparse (e))); | |
927 | ||
928 | if (sRef_modInFunction ()) | |
929 | { | |
930 | /* make sure the sRef is not bashed! */ | |
931 | /*@i@*/ e->sref = sRef_saveCopy (e->sref); | |
932 | } | |
933 | } | |
934 | } | |
935 | ||
28bf4b0b | 936 | DPRINTF (("Merge..")); |
616915dd | 937 | uentry_mergeDefinition (ce, e); |
938 | } | |
939 | ||
940 | if (isSref) | |
941 | { | |
942 | ctype ct = uentry_getType (ce); | |
943 | ||
944 | if (uentry_isFunction (ce) && ctype_isFunction (ct)) | |
945 | { | |
28bf4b0b | 946 | ct = ctype_getReturnType (ct); |
616915dd | 947 | } |
948 | ||
16c024b5 | 949 | uentry_setSref |
950 | (ce, sRef_makeCvar (st->lexlevel, eindex, ct, | |
951 | stateInfo_makeLoc (uentry_whereLast (ce), SA_DECLARED))); | |
6970c11b | 952 | } |
616915dd | 953 | } |
954 | else /* no previous entry */ | |
955 | { | |
956 | uentry outer; | |
957 | ||
958 | if (st->lexlevel == globScope | |
959 | && !uentry_isStatic (e) | |
960 | && !uentry_isExtern (e) | |
961 | && usymtab_isDefined (filetab)) | |
962 | { | |
963 | /* | |
964 | ** check if there is a static entry: (i.e., | |
965 | ** | |
966 | ** static int f (); | |
967 | ** ... | |
968 | ** int f (); | |
969 | */ | |
970 | ||
971 | eindex = usymtab_getIndex (filetab, ename); | |
972 | ||
973 | if (eindex != NOT_FOUND) | |
974 | { | |
975 | uentry ce = filetab->entries[eindex]; | |
976 | ||
977 | uentry_setStatic (e); | |
978 | uentry_mergeDefinition (ce, e); | |
979 | staticEntry = TRUE; | |
980 | goto exitPoint; | |
981 | } | |
982 | } | |
983 | ||
984 | outer = usymtab_lookupQuiet (st->env, ename); | |
985 | ||
7ebcc5bb | 986 | DPRINTF (("New : [%p] %s", e, uentry_unparseFull (e))); |
987 | DPRINTF (("Outer: [%p] %s", outer, uentry_unparseFull (outer))); | |
988 | ||
616915dd | 989 | /* |
990 | ** no previous definition, add the new one | |
991 | */ | |
992 | ||
993 | if (!noshadowerror | |
994 | && uentry_isValid (outer) | |
995 | && !(uentry_isYield (e) || uentry_isYield (outer)) | |
996 | && fileloc_isDefined (uentry_whereLast (e)) | |
ccf0a4a8 | 997 | && !fileloc_isXHFile (uentry_whereLast (e)) |
998 | && fileloc_isDefined (uentry_whereLast (outer)) | |
999 | && !fileloc_isXHFile (uentry_whereLast (outer))) | |
616915dd | 1000 | { |
1001 | if (!uentry_sameKind (outer, e)) | |
1002 | { | |
1003 | ; /* no error */ | |
1004 | } | |
1005 | else | |
1006 | { | |
1007 | if (ctype_isUnknown (uentry_getType (outer)) | |
1008 | || uentry_isForward (outer)) | |
1009 | { | |
1010 | ; | |
1011 | } | |
1012 | else | |
1013 | { | |
1014 | if (optgenerror | |
1015 | (FLG_SHADOW, | |
1016 | message ("%s %q shadows outer declaration", | |
1017 | ekind_capName (uentry_getKind (e)), | |
1018 | uentry_getName (e)), | |
1019 | uentry_whereLast (e))) | |
1020 | { | |
1021 | uentry_showWhereLast (outer); | |
1022 | } | |
1023 | } | |
1024 | } | |
1025 | } | |
1026 | ||
1027 | if (st == globtab && context_getFlag (FLG_NEWDECL)) | |
1028 | { | |
1029 | voptgenerror | |
1030 | (FLG_NEWDECL, | |
1031 | message ("New declaration: %q", uentry_getName (e)), | |
1032 | uentry_whereLast (e)); | |
1033 | } | |
1034 | ||
1035 | eindex = usymtab_addEntryAux (st, e, isSref); | |
1036 | } | |
1037 | ||
1038 | exitPoint: | |
1039 | return (staticEntry ? USYMIDINVALID : eindex); | |
1040 | } | |
1041 | ||
616915dd | 1042 | static void |
1043 | usymtab_replaceEntryAux (/*@notnull@*/ usymtab st, /*@only@*/ uentry e) | |
1044 | /*@globals globtab@*/ /*@modifies st, e@*/ | |
1045 | { | |
1046 | cstring ename = uentry_rawName (e); | |
1047 | int eindex; | |
1048 | ||
1049 | /* static tags in global scope */ | |
1050 | eindex = usymtab_getIndex (st, ename); | |
1051 | ||
1052 | if (eindex != NOT_FOUND) | |
1053 | { | |
1054 | uentry ce = st->entries[eindex]; | |
1055 | ||
28bf4b0b | 1056 | if (cstringTable_isDefined (st->htable)) |
616915dd | 1057 | { |
28bf4b0b | 1058 | cstringTable_replaceKey (st->htable, uentry_rawName (ce), |
1059 | cstring_copy (uentry_rawName (e))); | |
616915dd | 1060 | } |
1061 | ||
1062 | uentry_free (ce); | |
1063 | st->entries[eindex] = e; | |
1064 | } | |
1065 | else | |
1066 | { | |
1067 | eindex = usymtab_addEntryAux (st, e, FALSE); | |
1068 | } | |
1069 | } | |
616915dd | 1070 | |
1071 | /*@=deparrays@*/ | |
1072 | ||
1073 | void usymtab_supEntry (uentry e) | |
1074 | /*@globals utab, filetab, globtab@*/ | |
1075 | /*@modifies utab, globtab, e@*/ | |
1076 | { | |
1077 | (void) usymtab_supEntryAux (utab, e, FALSE); | |
1078 | } | |
1079 | ||
1080 | /* | |
1081 | ** this should be lots more efficient! | |
1082 | */ | |
1083 | ||
1084 | static /*@exposed@*/ uentry | |
1085 | usymtab_supEntryReturnAux (/*@notnull@*/ usymtab tab, | |
1086 | /*@only@*/ uentry e, bool isref) | |
1087 | /*@globals globtab, filetab@*/ | |
1088 | /*@modifies tab, globtab, e@*/ | |
1089 | { | |
1090 | cstring rawName = cstring_copy (uentry_rawName (e)); | |
1091 | bool stat = (tab == globtab) && uentry_isStatic (e); | |
1092 | uentry ret; | |
1093 | ||
616915dd | 1094 | (void) usymtab_supEntryAux (tab, e, isref); |
1095 | ||
1096 | if (stat) | |
1097 | { | |
1098 | ret = usymtab_lookupAux (filetab, rawName); | |
1099 | } | |
1100 | else | |
1101 | { | |
1102 | ret = usymtab_lookupAux (tab, rawName); | |
1103 | ||
1104 | if (uentry_isInvalid (ret) && usymtab_isDefined (filetab)) | |
1105 | { | |
1106 | ret = usymtab_lookupAux (filetab, rawName); | |
1107 | } | |
1108 | } | |
1109 | ||
1110 | cstring_free (rawName); | |
1111 | return ret; | |
1112 | } | |
1113 | ||
1114 | /*@dependent@*/ /*@exposed@*/ uentry | |
1115 | usymtab_supEntryReturn (/*@only@*/ uentry e) | |
1116 | /*@globals utab, filetab, globtab@*/ | |
1117 | /*@modifies utab, globtab, e@*/ | |
1118 | { | |
1119 | return (usymtab_supEntryReturnAux (utab, e, FALSE)); | |
1120 | } | |
1121 | ||
1122 | /*@dependent@*/ /*@exposed@*/ uentry | |
1123 | usymtab_supEntrySrefReturn (/*@only@*/ uentry e) | |
1124 | /*@globals utab, globtab, filetab@*/ | |
1125 | /*@modifies utab, globtab, e@*/ | |
1126 | { | |
1127 | return (usymtab_supEntryReturnAux (utab, e, TRUE)); | |
1128 | } | |
1129 | ||
1130 | /*@dependent@*/ /*@exposed@*/ uentry | |
1131 | usymtab_supGlobalEntryReturn (uentry e) | |
1132 | /*@globals globtab, filetab@*/ | |
1133 | /*@modifies globtab, e@*/ | |
1134 | { | |
1135 | uentry ret; | |
1136 | ||
1137 | ret = usymtab_supEntryReturnAux (globtab, e, FALSE); | |
1138 | ||
7ebcc5bb | 1139 | /* |
1140 | ** We need to keep track of internal function declarations, so | |
1141 | ** we can remove them from the symbol table after exiting this | |
1142 | ** function. This is a bit bogus, of course. | |
1143 | */ | |
1144 | ||
616915dd | 1145 | if (sRef_modInFunction ()) |
1146 | { | |
1147 | recordFunctionType (ret); | |
1148 | } | |
1149 | ||
1150 | return (ret); | |
1151 | } | |
1152 | ||
1153 | ctype | |
1154 | usymtab_supTypeEntry (/*@only@*/ uentry e) | |
1155 | /*@globals globtab, filetab@*/ | |
1156 | /*@modifies globtab, e@*/ | |
1157 | { | |
1158 | usymId uid; | |
1159 | ctype ret; | |
1160 | ||
1161 | if (uentry_isAbstractDatatype (e)) | |
1162 | { | |
1163 | uid = usymtab_supAbstractTypeEntry (e, FALSE); | |
1164 | ret = ctype_createAbstract (uid); | |
1165 | } | |
1166 | else | |
1167 | { | |
1168 | uid = usymtab_supEntryAux (globtab, e, FALSE); | |
1169 | ret = ctype_createUser (uid); | |
1170 | } | |
1171 | ||
1172 | if (sRef_modInFunction ()) | |
1173 | { | |
1174 | recordFunctionType (globtab->entries[uid]); | |
1175 | } | |
1176 | ||
1177 | return ret; | |
1178 | } | |
1179 | ||
1180 | uentry | |
1181 | usymtab_supReturnTypeEntry (/*@only@*/ uentry e) | |
1182 | /*@globals globtab, filetab@*/ | |
1183 | /*@modifies globtab@*/ | |
1184 | { | |
1185 | usymId uid; | |
28bf4b0b | 1186 | |
1187 | DPRINTF (("Abstract? %s", uentry_unparseFull (e))); | |
1188 | ||
616915dd | 1189 | if (uentry_isAbstractDatatype (e)) |
1190 | { | |
1191 | uid = usymtab_supAbstractTypeEntry (e, FALSE); | |
1192 | } | |
28bf4b0b | 1193 | else if (uentry_isMaybeAbstract (e) && context_getFlag (FLG_IMPABSTRACT)) |
1194 | { | |
1195 | bool maybeabs = TRUE; | |
1196 | cstring sname = uentry_getName (e); | |
1197 | uentry ue = usymtab_lookupGlobSafe (sname); | |
1198 | cstring_free (sname); | |
1199 | ||
1200 | if (uentry_isValid (ue)) | |
1201 | { | |
1202 | DPRINTF (("Lookup: %s", uentry_unparseFull (ue))); | |
1203 | ||
1204 | if (uentry_isDatatype (ue)) | |
1205 | { | |
1206 | if (uentry_isMaybeAbstract (ue)) | |
1207 | { | |
1208 | ; | |
1209 | } | |
1210 | else | |
1211 | { | |
1212 | maybeabs = FALSE; | |
1213 | } | |
1214 | } | |
1215 | else | |
1216 | { | |
1217 | DPRINTF (("Not datatype!")); | |
1218 | } | |
1219 | } | |
1220 | ||
1221 | if (maybeabs) | |
1222 | { | |
1223 | uentry ux; | |
1224 | uid = usymtab_supAbstractTypeEntry (e, FALSE); | |
1225 | ux = usymtab_getTypeEntry (uid); | |
1226 | uentry_setAbstract (ux); | |
1227 | } | |
1228 | else | |
1229 | { | |
1230 | uid = usymtab_supEntryAux (globtab, e, FALSE); | |
1231 | e = usymtab_getTypeEntry (uid); | |
1232 | ||
1233 | if (uentry_isMaybeAbstract (e)) | |
1234 | { | |
1235 | uentry_setConcrete (e); | |
1236 | } | |
1237 | } | |
1238 | } | |
616915dd | 1239 | else |
1240 | { | |
1241 | uid = usymtab_supEntryAux (globtab, e, FALSE); | |
28bf4b0b | 1242 | e = usymtab_getTypeEntry (uid); |
1243 | ||
e5081f8c | 1244 | /*? evans 2002-12-16 removed this? it doesn't make sense |
28bf4b0b | 1245 | if (uentry_isMaybeAbstract (e)) |
1246 | { | |
1247 | uentry_setConcrete (e); | |
1248 | } | |
e5081f8c | 1249 | */ |
616915dd | 1250 | } |
1251 | ||
1252 | if (sRef_modInFunction ()) | |
1253 | { | |
1254 | recordFunctionType (globtab->entries[uid]); | |
1255 | } | |
1256 | ||
1257 | return (globtab->entries[uid]); | |
1258 | } | |
1259 | ||
1260 | usymId | |
1261 | usymtab_supAbstractTypeEntry (/*@only@*/ uentry e, bool dodef) | |
1262 | /*@globals globtab, filetab@*/ | |
1263 | /*@modifies globtab, e@*/ | |
1264 | { | |
1265 | usymId uid; | |
28bf4b0b | 1266 | uentry ue; |
1267 | ||
616915dd | 1268 | uid = usymtab_supEntryAux (globtab, e, FALSE); |
28bf4b0b | 1269 | ue = usymtab_getTypeEntry (uid); |
616915dd | 1270 | |
1271 | if (dodef) | |
1272 | { | |
616915dd | 1273 | uentry_setDatatype (ue, uid); |
1274 | } | |
1275 | ||
28bf4b0b | 1276 | if (context_getFlag (FLG_ACCESSMODULE)) /* was accessfile */ |
616915dd | 1277 | { |
1278 | context_addFileAccessType (uid); | |
1279 | } | |
1280 | ||
1281 | if (sRef_modInFunction ()) | |
1282 | { | |
1283 | recordFunctionType (globtab->entries[uid]); | |
1284 | } | |
1285 | ||
1286 | return (uid); | |
1287 | } | |
1288 | ||
616915dd | 1289 | usymId |
1290 | usymtab_supExposedTypeEntry (/*@only@*/ uentry e, bool dodef) | |
1291 | /*@globals globtab, filetab@*/ | |
1292 | /*@modifies globtab, e@*/ | |
1293 | { | |
1294 | usymId uid; | |
1295 | ||
1296 | uid = usymtab_supEntryAux (globtab, e, FALSE); | |
1297 | ||
1298 | if (dodef) | |
1299 | { | |
1300 | uentry ue = usymtab_getTypeEntry (uid); | |
1301 | ||
1302 | uentry_setDatatype (ue, uid); | |
1303 | } | |
1304 | ||
1305 | if (sRef_modInFunction ()) | |
1306 | { | |
1307 | recordFunctionType (globtab->entries[uid]); | |
1308 | } | |
1309 | ||
1310 | return (uid); | |
1311 | } | |
616915dd | 1312 | |
1313 | ctype | |
1314 | usymtab_supForwardTypeEntry (/*@only@*/ uentry e) | |
1315 | /*@globals globtab, filetab@*/ | |
1316 | /*@modifies globtab, e@*/ | |
1317 | { | |
1318 | usymId uid = usymtab_supEntryAux (globtab, e, FALSE); | |
1319 | uentry ue = usymtab_getTypeEntry (uid); | |
1320 | ||
1321 | uentry_setDatatype (ue, uid); | |
1322 | ||
1323 | if (sRef_modInFunction ()) | |
1324 | { | |
1325 | recordFunctionType (globtab->entries[uid]); | |
1326 | } | |
1327 | ||
1328 | return (uentry_getAbstractType (ue)); | |
1329 | } | |
1330 | ||
1331 | void | |
1332 | usymtab_supEntrySref (uentry e) | |
1333 | /*@globals utab, globtab, filetab@*/ | |
1334 | /*@modifies utab, globtab, e@*/ | |
1335 | { | |
1336 | sRef old = uentry_getSref (e); | |
616915dd | 1337 | |
1338 | if (sRef_isType (old)) | |
1339 | { | |
1340 | uentry ue = usymtab_supEntryReturnAux (utab, e, TRUE); | |
1341 | ||
1342 | /*@access uentry@*/ | |
1343 | if (uentry_isValid (ue)) | |
1344 | { | |
1345 | sRef uref = uentry_getSref (ue); | |
1346 | ||
1347 | sRef_mergeStateQuiet (uref, old); | |
1348 | sRef_clearDerived (uref); | |
1349 | } | |
1350 | /*@noaccess uentry@*/ | |
1351 | } | |
1352 | else if (sRef_isKnown (old)) | |
1353 | { | |
1354 | usymtab_supEntry (e); | |
1355 | } | |
1356 | else | |
1357 | { | |
1358 | (void) usymtab_supEntryAux (utab, e, TRUE); | |
1359 | } | |
1360 | } | |
1361 | ||
1362 | void usymtab_supGlobalEntry (/*@only@*/ uentry e) | |
1363 | /*@globals globtab, filetab@*/ | |
1364 | /*@modifies globtab, filetab, e@*/ | |
1365 | { | |
1366 | usymId uid; | |
1367 | ||
1368 | DPRINTF (("Sup global entry: %s", uentry_unparse (e))); | |
1369 | ||
1370 | uid = usymtab_supEntryAux (globtab, e, FALSE); | |
1371 | ||
1372 | if (sRef_modInFunction ()) | |
1373 | { | |
1374 | recordFunctionType (globtab->entries[uid]); | |
1375 | } | |
1376 | } | |
1377 | ||
1378 | uentry | |
1379 | usymtab_supReturnFileEntry (/*@only@*/ uentry e) | |
1380 | /*@globals filetab, globtab@*/ | |
1381 | /*@modifies filetab, globtab, e@*/ | |
1382 | { | |
1383 | llassert (filetab != usymtab_undefined); | |
1384 | DPRINTF (("File entry: %s", uentry_unparse (e))); | |
1385 | return (usymtab_supEntryReturnAux (filetab, e, FALSE)); | |
1386 | } | |
1387 | ||
1388 | /* | |
1389 | ** observers | |
1390 | */ | |
1391 | ||
1392 | bool | |
1393 | usymtab_inDeepScope () /*@globals utab@*/ | |
1394 | { | |
1395 | return (utab->lexlevel > paramsScope); | |
1396 | } | |
1397 | ||
1398 | static int | |
1399 | usymtab_getIndex (/*@notnull@*/ usymtab s, cstring k) | |
1400 | { | |
1401 | int i; | |
1402 | ||
28bf4b0b | 1403 | DPRINTF (("Lookup %s", k)); |
616915dd | 1404 | |
28bf4b0b | 1405 | if (cstringTable_isDefined (s->htable)) |
1406 | { | |
1407 | i = cstringTable_lookup (s->htable, k); | |
616915dd | 1408 | return i; |
1409 | } | |
1410 | else | |
1411 | { | |
1412 | for (i = 0; i < s->nentries; i++) | |
1413 | { | |
1414 | uentry current = s->entries[i]; | |
1415 | ||
28bf4b0b | 1416 | DPRINTF (("Check %d: %s", i, uentry_rawName (current))); |
1417 | ||
616915dd | 1418 | if (!uentry_isUndefined (current) |
1419 | && cstring_equal (uentry_rawName (current), k)) | |
1420 | { | |
1421 | return i; | |
1422 | } | |
1423 | } | |
1424 | ||
1425 | return NOT_FOUND; | |
1426 | } | |
1427 | } | |
1428 | ||
1429 | static uentry | |
1430 | usymtab_fetchIndex (/*@notnull@*/ usymtab s, int i) | |
1431 | { | |
1432 | llassert (i >= 0 && i < s->nentries); | |
1433 | return (s->entries[i]); | |
1434 | } | |
1435 | ||
1436 | usymId | |
1437 | usymtab_getTypeId (cstring k) /*@globals globtab@*/ | |
1438 | { | |
1439 | usymId uid = usymtab_getIndex (globtab, k); | |
1440 | ||
1441 | if (uid == NOT_FOUND) return USYMIDINVALID; | |
1442 | ||
1443 | if (!(uentry_isDatatype (usymtab_getTypeEntry (uid)))) { | |
1444 | return USYMIDINVALID; | |
1445 | } | |
1446 | ||
1447 | return uid; | |
1448 | } | |
1449 | ||
1450 | /*@dependent@*/ uentry | |
1451 | usymtab_lookupStructTag (cstring k) | |
1452 | { | |
1453 | cstring sname = makeStruct (k); | |
1454 | uentry ue = usymtab_lookupGlob (sname); | |
28bf4b0b | 1455 | |
1456 | cstring_free (sname); | |
616915dd | 1457 | return (ue); |
1458 | } | |
1459 | ||
1460 | /*@dependent@*/ uentry | |
1461 | usymtab_lookupUnionTag (cstring k) | |
1462 | { | |
1463 | cstring uname = makeUnion (k); | |
1464 | uentry res = usymtab_lookupGlob (uname); | |
1465 | ||
1466 | cstring_free (uname); | |
1467 | return res; | |
1468 | } | |
1469 | ||
1470 | /*@dependent@*/ uentry | |
1471 | usymtab_lookupEnumTag (cstring k) | |
1472 | { | |
1473 | cstring ename = makeEnum (k); | |
1474 | uentry res = usymtab_lookupGlob (ename); | |
1475 | ||
1476 | cstring_free (ename); | |
1477 | return res; | |
1478 | } | |
1479 | ||
1480 | usymId | |
1481 | usymtab_getId (cstring k) /*@globals globtab@*/ | |
1482 | { | |
1483 | usymId uid = usymtab_getIndex (globtab, k); | |
1484 | uentry ue; | |
1485 | ||
1486 | if (uid == NOT_FOUND) | |
1487 | { | |
1488 | return USYMIDINVALID; | |
1489 | } | |
1490 | ||
1491 | ue = usymtab_getGlobalEntry (uid); | |
1492 | ||
1493 | if (uentry_isPriv (ue)) | |
1494 | { | |
1495 | return USYMIDINVALID; | |
1496 | } | |
1497 | ||
1498 | return uid; | |
1499 | } | |
1500 | ||
1501 | static /*@exposed@*/ uentry | |
1502 | usymtab_getEntryAux (/*@notnull@*/ usymtab s, usymId uid) | |
1503 | { | |
1504 | llassert (uid != USYMIDINVALID); | |
1505 | ||
1506 | if (uid < 0 || uid >= s->nentries) | |
1507 | { | |
1508 | llcontbug (message ("usymtab_getEntry: out of range: level = %d [%d]", | |
1509 | s->lexlevel, uid)); | |
1510 | return uentry_undefined; | |
1511 | } | |
1512 | ||
1513 | llassertprint (uentry_isValid (s->entries[uid]), | |
1514 | ("entry undefined: %d", uid)); | |
1515 | ||
1516 | return s->entries[uid]; | |
1517 | } | |
1518 | ||
1519 | /*@dependent@*/ /*@observer@*/ uentry | |
1520 | usymtab_getGlobalEntry (usymId uid) | |
1521 | /*@globals utab, globtab@*/ | |
1522 | { | |
1523 | if (dbgfree) return (uentry_undefined); | |
1524 | ||
1525 | if (utab->lexlevel > paramsScope) | |
1526 | { | |
1527 | /* need to do this the awkward way, since it could be in conditional scope */ | |
1528 | return (usymtab_lookupSafe (uentry_rawName (globtab->entries[uid]))); | |
1529 | } | |
1530 | else | |
1531 | { | |
1532 | return (globtab->entries[uid]); | |
1533 | } | |
1534 | } | |
1535 | ||
1536 | /*@dependent@*/ /*@exposed@*/ uentry | |
1537 | usymtab_getTypeEntry (usymId uid) | |
1538 | /*@globals globtab@*/ | |
1539 | { | |
1540 | if (dbgload) | |
1541 | { | |
1542 | if (uid >= 0 && uid < globtab->nentries) | |
1543 | { | |
1544 | return (globtab->entries[uid]); | |
1545 | } | |
1546 | else | |
1547 | { | |
1548 | return (uentry_undefined); | |
1549 | } | |
1550 | } | |
1551 | else | |
1552 | { | |
28bf4b0b | 1553 | llassert (uid >= 0 && uid < globtab->nentries); |
616915dd | 1554 | return (globtab->entries[uid]); |
1555 | } | |
1556 | } | |
1557 | ||
1558 | /* | |
1559 | ** in load files | |
1560 | */ | |
1561 | ||
1562 | /*@dependent@*/ /*@exposed@*/ uentry | |
1563 | usymtab_getTypeEntrySafe (usymId uid) | |
1564 | /*@globals globtab@*/ | |
1565 | { | |
1566 | if (uid < 0 || uid >= globtab->nentries) | |
1567 | { | |
1568 | return uentry_undefined; | |
1569 | } | |
1570 | ||
1571 | return (globtab->entries[uid]); | |
1572 | } | |
1573 | ||
1574 | bool | |
1575 | usymtab_isBoolType (usymId uid) | |
1576 | /*@globals globtab@*/ | |
1577 | { | |
1578 | llassert (uid >= 0 && uid < globtab->nentries); | |
1579 | ||
1580 | return (cstring_equal (uentry_rawName (globtab->entries[uid]), | |
1581 | context_getBoolName ())); | |
1582 | } | |
1583 | ||
1584 | cstring | |
1585 | usymtab_getTypeEntryName (usymId uid) | |
1586 | /*@globals globtab@*/ | |
1587 | { | |
1588 | uentry ue; | |
1589 | ||
1590 | if (dbgfree) | |
1591 | { | |
1592 | return (cstring_makeLiteral ("<freetype>")); | |
1593 | } | |
1594 | ||
1595 | ue = usymtab_getTypeEntry (uid); | |
1596 | ||
1597 | if (dbgload && !uentry_isValid (ue)) | |
1598 | { | |
1599 | return (message ("<missing type: %d>", uid)); | |
1600 | } | |
1601 | ||
1602 | llassertprint (uentry_isValid (ue), ("type undefined: %d", uid)); | |
1603 | ||
1604 | return (uentry_getName (ue)); | |
1605 | } | |
1606 | ||
8250fa4a | 1607 | # if 0 |
28bf4b0b | 1608 | /*@unused@*/ static void |
616915dd | 1609 | usymtab_rehash (/*@notnull@*/ usymtab s) |
1610 | { | |
1611 | int i; | |
1612 | ||
28bf4b0b | 1613 | if (cstringTable_isDefined (s->htable)) |
616915dd | 1614 | { |
28bf4b0b | 1615 | cstringTable_free (s->htable); |
616915dd | 1616 | } |
1617 | ||
d5047b91 | 1618 | s->htable = cstringTable_create (LLAHSHSIZE); |
616915dd | 1619 | |
1620 | for (i = 0; i < s->nentries; i++) | |
1621 | { | |
28bf4b0b | 1622 | cstringTable_insert (s->htable, cstring_copy (uentry_rawName (s->entries[i])), i); |
616915dd | 1623 | } |
1624 | } | |
8250fa4a | 1625 | # endif |
616915dd | 1626 | |
1627 | /* | |
1628 | ** superficial copy of usymtab | |
1629 | ** | |
1630 | ** DO copy spec entries | |
1631 | */ | |
1632 | ||
1633 | static /*@only@*/ /*@notnull@*/ usymtab | |
1634 | usymtab_shallowCopy (/*@notnull@*/ usymtab s) /*@*/ | |
1635 | { | |
1636 | usymtab copytab = usymtab_createRoot (); | |
1637 | int i; | |
1638 | ||
1639 | for (i = 0; i < s->nentries; i++) | |
1640 | { | |
1641 | usymtab_addEntryBase (copytab, s->entries[i]); | |
1642 | } | |
1643 | ||
1644 | return copytab; | |
1645 | } | |
1646 | ||
1647 | static void | |
1648 | usymtab_shallowFree (/*@only@*/ /*@notnull@*/ usymtab s) | |
1649 | { | |
1650 | aliasTable_free (s->aliases); | |
1651 | refTable_free (s->reftable, s->nentries); | |
1652 | sfree (s->entries); | |
1653 | /*@-compdestroy@*/ sfree (s); /*@=compdestroy@*/ | |
1654 | } | |
1655 | ||
1656 | /* | |
1657 | ** converts usymId from old table to sorted one | |
1658 | */ | |
1659 | ||
1660 | usymId | |
1661 | usymtab_convertId (usymId uid) | |
1662 | /*@globals oldtab, utab@*/ | |
1663 | { | |
1664 | uentry ue; | |
1665 | usymId ret; | |
1666 | cstring name; | |
1667 | ||
1668 | llassert (usymtab_isDefined (oldtab)); | |
1669 | ||
1670 | ue = usymtab_getEntryAux (oldtab, uid); | |
1671 | ||
1672 | llassertprint (uentry_isValid (ue), ("convertId: undefined: %d", uid)); | |
1673 | ||
1674 | name = uentry_rawName (ue); | |
1675 | ||
1676 | ret = usymtab_getIndex (utab, name); | |
28bf4b0b | 1677 | llassert (ret == uid); /*! for now, no rehash! */ |
1678 | DPRINTF (("Convert: %s [%d] -> %s [%d]", | |
1679 | uentry_unparse (ue), uid, | |
1680 | uentry_unparse (utab->entries[ret]), ret)); | |
616915dd | 1681 | |
1682 | llassertprint (ret != USYMIDINVALID, ("convertId: return is invalid")); | |
1683 | ||
1684 | return (ret); | |
1685 | } | |
1686 | ||
1687 | void | |
1688 | usymtab_prepareDump (void) | |
1689 | /*@globals oldtab, utab@*/ | |
1690 | /*@modifies oldtab, utab@*/ | |
1691 | { | |
1692 | llassert (usymtab_inGlobalScope ()); | |
616915dd | 1693 | llassert (oldtab == usymtab_undefined); |
1694 | ||
28bf4b0b | 1695 | /* |
1696 | DPRINTF (("Preparing to dump:")); | |
1697 | usymtab_printAll (); | |
1698 | */ | |
1699 | ||
616915dd | 1700 | oldtab = usymtab_shallowCopy (utab); |
1701 | ||
1702 | /* | |
28bf4b0b | 1703 | ** alpha compare - make sure order is same on different platforms |
1704 | ** error messages appear in same order | |
616915dd | 1705 | */ |
1706 | ||
28bf4b0b | 1707 | /* |
616915dd | 1708 | qsort (utab->entries, (size_t)utab->nentries, |
28bf4b0b | 1709 | sizeof (*utab->entries), |
1710 | (int (*)(const void *, const void *)) uentry_xcomparealpha); | |
1711 | ||
616915dd | 1712 | usymtab_rehash (utab); |
28bf4b0b | 1713 | */ |
1714 | ||
1715 | /* | |
1716 | DPRINTF (("After rehash:")); | |
1717 | usymtab_printAll (); | |
1718 | */ | |
616915dd | 1719 | } |
1720 | ||
28bf4b0b | 1721 | void usymtab_dump (FILE *fout) |
1722 | /*@globals utab, oldtab@*/ | |
616915dd | 1723 | { |
1724 | int i; | |
1725 | bool neednl = FALSE; | |
1726 | uentry lastentry = uentry_undefined; | |
1727 | ekind lastekind = KINVALID; | |
1728 | int linelen = 0; | |
1729 | ||
1730 | /* | |
1731 | ** must call prepareDump first | |
1732 | */ | |
1733 | ||
1734 | llassert (oldtab != usymtab_undefined); | |
1735 | ||
1736 | for (i = 0; i < utab->nentries; i++) | |
1737 | { | |
1738 | uentry thisentry = utab->entries[i]; | |
1739 | ekind thisekind = uentry_getKind (thisentry); | |
1740 | ||
28bf4b0b | 1741 | if (!uentry_hasRealName (thisentry)) |
1742 | { | |
1743 | llassert (uentry_isGlobalMarker (thisentry)); | |
1744 | ||
1745 | if (neednl) | |
1746 | { | |
1747 | check (fputc ('\n', fout) == (int) '\n'); | |
1748 | } | |
1749 | ||
1750 | fprintf (fout, "*%d (GlobalMarker)\n", KGLOBALMARKER); | |
1751 | lastekind = KINVALID; | |
1752 | linelen = 0; | |
1753 | neednl = FALSE; | |
1754 | } | |
1755 | else | |
1756 | { | |
1757 | if (thisekind != lastekind) | |
1758 | { | |
1759 | if (neednl) | |
1760 | { | |
1761 | check (fputc ('\n', fout) == (int) '\n'); | |
1762 | } | |
1763 | ||
1764 | neednl = FALSE; | |
1765 | lastentry = uentry_undefined; | |
1766 | fprintf (fout, "*%d (%s)\n", ekind_toInt (thisekind), | |
1767 | cstring_toCharsSafe (ekind_capName (thisekind))); | |
1768 | lastekind = thisekind; | |
1769 | linelen = 0; | |
1770 | } | |
1771 | ||
1772 | /* | |
1773 | ** evans - 2001-02-18 - added the - 48 fudge factor... | |
1774 | ** extra characters dumped, but I haven't counded them carefully... | |
1775 | */ | |
1776 | ||
1777 | if (uentry_isInvalid (lastentry) || !uentry_equiv (lastentry, thisentry) | |
1778 | || (linelen > (MAX_DUMP_LINE_LENGTH - (2 * MAX_NAME_LENGTH) - 48))) | |
1779 | { | |
1780 | cstring cdump; | |
1781 | ||
1782 | DPRINTF (("Dumping entry: %d", i)); | |
1783 | cdump = message ("^%d %q", i, uentry_dump (thisentry)); | |
1784 | /* was: cdump = uentry_dump (thisentry)); */ | |
1785 | ||
1786 | lastentry = thisentry; | |
1787 | if (neednl) | |
1788 | { | |
1789 | check (fputc ('\n', fout) == (int) '\n'); | |
1790 | linelen = 0; | |
1791 | } | |
1792 | ||
1793 | linelen += cstring_length (cdump); | |
1794 | ||
1795 | /* no new line here! */ | |
1796 | if (cstring_length (cdump) > 0) | |
1797 | { | |
1798 | check (fputs (cstring_toCharsSafe (cdump), fout) != EOF); | |
1799 | } | |
1800 | ||
1801 | cstring_free (cdump); | |
1802 | neednl = TRUE; | |
1803 | } | |
1804 | else | |
1805 | { | |
1806 | cstring cdump = uentry_rawName (thisentry); | |
1807 | DPRINTF (("Raw name: %s", cdump)); | |
1808 | linelen += (cstring_length (cdump) + 1); | |
1809 | fprintf (fout, "#%s", cstring_toCharsSafe (cdump)); | |
1810 | } | |
1811 | } | |
616915dd | 1812 | } |
1813 | ||
1814 | if (neednl) | |
1815 | { | |
1816 | check (fputc ('\n', fout) == (int) '\n'); | |
1817 | } | |
920a3797 | 1818 | |
1819 | lastekind = KINVALID; | |
1820 | ||
1821 | fprintf(fout, ";; Library constraints\n"); | |
35eea586 | 1822 | |
1823 | /*drl July 27 added this so that libraries without | |
1824 | buffer constraints would be handled correctly. | |
1825 | I'm trying to do this without breaking older libraries. | |
1826 | ||
1827 | Splint should still be able to handle libraries without this message. | |
1828 | */ | |
1829 | ||
1830 | ||
1831 | fprintf(fout, "start_Buffer_Constraints\n"); | |
1832 | ||
920a3797 | 1833 | for (i = 0; i < utab->nentries; i++) |
1834 | { | |
1835 | uentry thisentry = utab->entries[i]; | |
1836 | ||
1837 | if (uentry_isFunction (thisentry) ) | |
1838 | { | |
1839 | constraintList preconditions; | |
1840 | constraintList postconditions; | |
1841 | ||
1842 | preconditions = uentry_getFcnPreconditions (thisentry); | |
1843 | postconditions = uentry_getFcnPostconditions (thisentry); | |
1844 | ||
1845 | if ( constraintList_isDefined(preconditions) || | |
1846 | constraintList_isDefined(postconditions) ) | |
1847 | { | |
28bf4b0b | 1848 | fprintf(fout,"%s\n", cstring_toCharsSafe (uentry_rawName(thisentry) ) ); |
920a3797 | 1849 | if (constraintList_isDefined(preconditions) ) |
1850 | { | |
1851 | fprintf(fout,"pre:\n"); | |
1852 | constraintList_dump(preconditions, fout); | |
1853 | fprintf (fout, ";; end precondition constraints\n" ); | |
1854 | constraintList_free(preconditions); | |
1855 | } | |
1856 | else | |
1857 | { | |
1858 | fprintf(fout,"pre:EMPTY\n"); | |
1859 | } | |
1860 | if (constraintList_isDefined(postconditions) ) | |
1861 | { | |
1862 | fprintf(fout,"post:\n"); | |
1863 | constraintList_dump(postconditions, fout); | |
1864 | fprintf (fout, ";; end precondition constraints\n" ); | |
1865 | constraintList_free(postconditions); | |
1866 | } | |
1867 | else | |
1868 | { | |
1869 | fprintf(fout,"post:EMPTY\n"); | |
1870 | } | |
1871 | } | |
1872 | ||
1873 | } | |
1874 | } | |
616915dd | 1875 | } |
1876 | ||
3e3ec469 | 1877 | |
616915dd | 1878 | void usymtab_load (FILE *f) |
1879 | /*@globals utab, globtab@*/ | |
1880 | /*@modifies utab, *f@*/ | |
1881 | { | |
1882 | char *s = mstring_create (MAX_DUMP_LINE_LENGTH); | |
1883 | char *os = s; | |
1884 | ekind kind = KINVALID; | |
1885 | fileloc loc = g_currentloc; | |
1886 | char c; | |
1887 | uentry ue; | |
1888 | ||
1889 | dbgload = TRUE; | |
1890 | ||
1891 | llassert (utab == globtab); | |
1892 | llassert (utab->nentries == 0); | |
1893 | ||
28bf4b0b | 1894 | while (((s = reader_readLine (f, s, MAX_DUMP_LINE_LENGTH)) != NULL) |
616915dd | 1895 | && *s == ';') |
1896 | { | |
28bf4b0b | 1897 | /* ignore ; comments */ ; |
616915dd | 1898 | } |
28bf4b0b | 1899 | |
616915dd | 1900 | while (s != NULL && *s != ';') |
1901 | { | |
28bf4b0b | 1902 | int index; |
1903 | ||
616915dd | 1904 | if (*s == '*') |
1905 | { | |
28bf4b0b | 1906 | int ek; |
616915dd | 1907 | s++; |
28bf4b0b | 1908 | ek = reader_getInt (&s); |
616915dd | 1909 | |
28bf4b0b | 1910 | if (ek == KGLOBALMARKER) |
1911 | { | |
1912 | uentry lue = uentry_makeGlobalMarker (); | |
1913 | DPRINTF (("Adding global marker: %s", uentry_unparseFull (lue))); | |
1914 | usymtab_addEntryAlways (utab, lue); | |
1915 | kind = KINVALID; | |
1916 | goto nextiter; | |
1917 | } | |
1918 | else | |
1919 | { | |
1920 | kind = ekind_fromInt (ek); | |
1921 | goto nextiter; | |
1922 | } | |
616915dd | 1923 | } |
1924 | ||
1925 | if (*s == '$') | |
1926 | { | |
1927 | llfatalerror | |
1928 | (cstring_makeLiteral | |
1b8ae690 | 1929 | ("Library is in obsolete format. Use splint +whichlib " |
616915dd | 1930 | "to see which library is being loaded.")); |
1931 | } | |
1932 | ||
28bf4b0b | 1933 | if (reader_optCheckChar (&s, '^')) |
1934 | { | |
1935 | index = reader_getInt (&s); | |
1936 | } | |
1937 | else | |
1938 | { | |
1939 | index = -1; | |
1940 | } | |
1941 | ||
1942 | llassert (kind != KINVALID); | |
616915dd | 1943 | ue = uentry_undump (kind, loc, &s); |
28bf4b0b | 1944 | |
1945 | llassert (utab->nentries == index || index == -1); | |
616915dd | 1946 | |
1947 | if (uentry_isValid (ue)) | |
1948 | { | |
28bf4b0b | 1949 | int lastindex = utab->nentries; |
1950 | ue = usymtab_addEntryAlways (utab, ue); | |
3e3ec469 | 1951 | |
1952 | ||
1953 | # if 0 | |
1954 | if (uentry_isConstant (ue)) /*@i23! isPreProcessorMacro */ | |
1955 | { | |
1956 | cstring uname = uentry_getName (ue); | |
1957 | ||
1958 | /* Also check its a macro... */ | |
1959 | DPRINTF (("Installing: %s", uname)); | |
1960 | ||
1961 | cpphash_installMacro | |
1962 | (mstring_copy (cstring_toCharsSafe (uname)), | |
1963 | cstring_length (uname), | |
1964 | cpplib_createDefinition (message ("%s 255", uname), | |
1965 | loc, | |
1966 | FALSE, FALSE).defn, | |
1967 | cpphash_hashCode (cstring_toCharsSafe (uname), | |
1968 | cstring_length (uname), | |
1969 | CPP_HASHSIZE)); | |
1970 | ||
1971 | DPRINTF (("After install: %s", uname)); | |
1972 | } | |
1973 | # endif | |
1974 | ||
28bf4b0b | 1975 | if (utab->nentries != lastindex + 1) |
1976 | { | |
1977 | DPRINTF (("No add: %s", uentry_unparseFull (ue))); | |
1978 | BADBRANCH; | |
1979 | } | |
616915dd | 1980 | /*@-branchstate@*/ |
1981 | } | |
1982 | /*@=branchstate@*/ | |
1983 | ||
1984 | /* | |
1985 | ** now, any other names are the same uentry | |
1986 | */ | |
1987 | ||
1988 | while (*(s++) == '#') | |
1989 | { | |
28bf4b0b | 1990 | cstring name = cstring_fromCharsO (reader_getWord (&s)); |
616915dd | 1991 | uentry nue = uentry_nameCopy (name, ue); |
28bf4b0b | 1992 | /* |
1993 | DPRINTF (("Name copy: %s", uentry_unparseFull (nue))); | |
1994 | BADBRANCH; | |
1995 | */ | |
616915dd | 1996 | |
28bf4b0b | 1997 | usymtab_addEntryAlways (utab, nue); |
616915dd | 1998 | } |
1999 | ||
2000 | while ((c = *s) != '\0' && (c !='\n')) | |
2001 | { | |
2002 | if (c != ' ' || c != '\t') | |
2003 | { | |
2004 | llbuglit ("Junk in load file"); | |
2005 | } | |
2006 | ||
2007 | s++; | |
2008 | } | |
2009 | ||
2010 | nextiter: | |
28bf4b0b | 2011 | { |
2012 | s = reader_readLine (f, os, MAX_DUMP_LINE_LENGTH); | |
2013 | } | |
616915dd | 2014 | } |
2015 | ||
920a3797 | 2016 | /*DRL added 6/21/01 |
2017 | to handle reading of buffer overflow related constraints | |
2018 | */ | |
2019 | while (fgets (s, MAX_DUMP_LINE_LENGTH, f) != NULL | |
2020 | && *s == ';') | |
2021 | { | |
2022 | ; /* ignore ;-comments */ | |
2023 | } | |
35eea586 | 2024 | |
2025 | /*drl July 27 added this so that libraries without | |
2026 | buffer constraints would be handled correctly. | |
2027 | I'm trying to do this without breaking older libraries*/ | |
2028 | ||
2029 | /*check for "optional" start buffer constraints message*/ | |
6fcd0b1e | 2030 | |
2031 | if (mstring_equalPrefix (s, "start_Buffer_Constraints")) | |
35eea586 | 2032 | { |
6fcd0b1e | 2033 | (void) fgets (s, MAX_DUMP_LINE_LENGTH, f); |
35eea586 | 2034 | } |
920a3797 | 2035 | |
2036 | while (s != NULL && *s != ';') | |
2037 | { | |
2038 | constraintList preconditions; | |
2039 | constraintList postconditions; | |
2040 | ||
28bf4b0b | 2041 | cstring name = cstring_fromChars(reader_getWord(&s) ); |
920a3797 | 2042 | cstring temp; |
2043 | ue = usymtab_lookup ( name ); | |
2044 | ||
2045 | cstring_free(name); | |
2046 | ||
2047 | preconditions = constraintList_undefined; | |
2048 | postconditions = constraintList_undefined; | |
2049 | ||
2050 | if (!uentry_isValid(ue) ) | |
2051 | { | |
28bf4b0b | 2052 | llfatalbug ((message("Invalid uentry for %s library file may be corrupted", cstring_fromChars(s) ) )); |
920a3797 | 2053 | } |
2054 | s = fgets (os, MAX_DUMP_LINE_LENGTH, f); | |
2055 | ||
ccf0a4a8 | 2056 | temp = cstring_fromChars (reader_getWord(&s) ); |
920a3797 | 2057 | |
28bf4b0b | 2058 | if (cstring_compareLit (temp,"pre:") == 0 ) |
920a3797 | 2059 | { |
3814599d | 2060 | preconditions = constraintList_undump (f); |
920a3797 | 2061 | } |
28bf4b0b | 2062 | else |
2063 | { | |
2064 | if (cstring_compareLit (temp,"pre:EMPTY") != 0 ) | |
2065 | llfatalbug ((message("Error reading library file pre:EMPTY expected but got %s", temp ) )); | |
2066 | } | |
2067 | ||
920a3797 | 2068 | cstring_free(temp); |
2069 | ||
2070 | s = fgets (os, MAX_DUMP_LINE_LENGTH, f); | |
2071 | ||
28bf4b0b | 2072 | temp = cstring_fromChars(reader_getWord(&s) ); |
ccf0a4a8 | 2073 | if (cstring_compareLit (temp, "post:") == 0 ) |
920a3797 | 2074 | { |
3814599d | 2075 | postconditions = constraintList_undump (f); |
920a3797 | 2076 | } |
28bf4b0b | 2077 | else |
2078 | { | |
ccf0a4a8 | 2079 | if (cstring_compareLit (temp, "post:EMPTY") != 0 ) |
28bf4b0b | 2080 | llfatalbug ((message("Error reading library file post:EMPTY expected but got %s", temp ) )); |
2081 | } | |
2082 | ||
ccf0a4a8 | 2083 | cstring_free (temp); |
920a3797 | 2084 | |
3814599d | 2085 | uentry_setPreconditions (ue, functionConstraint_createBufferConstraint (preconditions)); |
2086 | uentry_setPostconditions (ue, functionConstraint_createBufferConstraint (postconditions)); | |
920a3797 | 2087 | |
2088 | s = fgets (os, MAX_DUMP_LINE_LENGTH, f); | |
2089 | } | |
2090 | ||
616915dd | 2091 | dbgload = FALSE; |
2092 | sfree (os); | |
2093 | } | |
2094 | ||
2095 | /* | |
2096 | ** file scope for static variables | |
2097 | */ | |
2098 | ||
2099 | void | |
2100 | usymtab_enterFile () | |
2101 | /*@globals utab, globtab, filetab@*/ | |
2102 | /*@modifies filetab@*/ | |
2103 | { | |
2104 | llassert (utab == globtab); | |
2105 | ||
2106 | # if 0 | |
2107 | /* check globals */ | |
2108 | ||
2109 | usymtab_entries (globtab, ue) | |
2110 | { | |
2111 | if (sRef_hasDerived (uentry_getSref (ue))) | |
2112 | { | |
80489f0a | 2113 | fprintf (g_warningstream, "Derived Global: %s\n", uentry_unparse (ue)); |
2114 | fprintf (g_warningstream, "sRef: %s\n", sRef_unparseFull (ue->sref)); | |
616915dd | 2115 | } |
2116 | } end_usymtab_entries ; | |
2117 | ||
2118 | # endif | |
2119 | ||
2120 | usymtab_enterScope (); | |
2121 | filetab = utab; | |
2122 | } | |
2123 | ||
2124 | void | |
2125 | usymtab_exitFile () | |
2126 | /*@globals utab, filetab@*/ | |
2127 | /*@modifies filetab, utab@*/ | |
2128 | { | |
2129 | ||
2130 | llassert (utab->lexlevel == 1); | |
2131 | ||
2132 | usymtab_exitScope (exprNode_undefined); | |
2133 | filetab = NULL; | |
2134 | } | |
2135 | ||
2136 | void | |
2137 | usymtab_enterScope () | |
2138 | /*@globals utab, globtab, filetab@*/ | |
2139 | /*@modifies utab@*/ | |
2140 | { | |
2141 | usymtab t = usymtab_create (US_NORMAL, utab, TRUE); | |
2142 | ||
2143 | /* unconditional scope: optimize to avoid copy */ | |
2144 | t->aliases = aliasTable_copy (utab->aliases); | |
2145 | utab = t; | |
2146 | ||
2147 | llassert (usymtab_isDefined (t->env)); | |
2148 | ||
2149 | if (t->env->lexlevel == paramsScope && context_inFunctionLike ()) | |
2150 | { | |
2151 | noshadowerror = TRUE; | |
2152 | usymtab_handleParams (); | |
2153 | noshadowerror = FALSE; | |
2154 | } | |
2155 | } | |
2156 | ||
2157 | /* | |
2158 | ** setup external references: | |
2159 | ** o only, unique params alias external args | |
2160 | ** o other params may alias anything of their type | |
2161 | */ | |
2162 | ||
2163 | static void | |
2164 | usymtab_handleParams (void) | |
2165 | /*@globals utab, globtab, filetab@*/ | |
2166 | /*@modifies utab, globtab@*/ | |
2167 | { | |
2168 | usymtab ptab = utab->env; | |
2169 | uentry fcn = context_getHeader (); | |
2170 | ||
616915dd | 2171 | usymtab_entries (ptab, param) |
2172 | { | |
2173 | uentry ue; | |
2174 | ||
2175 | if (!uentry_isYield (param)) | |
2176 | { | |
2177 | sRef uref; | |
2178 | sRef pref = uentry_getSref (param); | |
616915dd | 2179 | |
28bf4b0b | 2180 | /* Could be a global. */ |
616915dd | 2181 | |
28bf4b0b | 2182 | if (uentry_isAnyParam (param)) |
2183 | { | |
2184 | ue = uentry_makeVariable (fixParamName (uentry_rawName (param)), | |
2185 | uentry_getType (param), | |
2186 | fileloc_copy (uentry_whereDeclared (param)), | |
2187 | FALSE); | |
2188 | ||
2189 | uentry_copyState (ue, param); | |
2190 | uentry_setRefParam (ue); | |
2191 | ||
2192 | ue = usymtab_supEntrySrefReturn (ue); | |
2193 | ||
2194 | /* must be after supercede! */ | |
2195 | ||
2196 | if (!sRef_stateKnown (pref)) | |
616915dd | 2197 | { |
28bf4b0b | 2198 | uentry_setDefState (ue, SS_DEFINED); |
2199 | uentry_setDefState (param, SS_DEFINED); | |
616915dd | 2200 | } |
2201 | else | |
2202 | { | |
28bf4b0b | 2203 | if (sRef_isStateSpecial (pref)) |
2204 | { | |
3e3ec469 | 2205 | uentry_setDefState (ue, SS_SPECIAL); /* ALLOCATED); */ |
2206 | /* evans 2002-01-01: should be unnecessary, the pre clauses | |
2207 | ** set the state if necessary. | |
2208 | */ | |
28bf4b0b | 2209 | } |
2210 | else | |
2211 | { | |
2212 | uentry_setDefState (ue, sRef_getDefState (pref)); | |
2213 | } | |
616915dd | 2214 | } |
28bf4b0b | 2215 | |
2216 | uref = uentry_getSref (ue); | |
2217 | ||
2218 | if (sRef_isStack (uref)) | |
616915dd | 2219 | { |
28bf4b0b | 2220 | alkind pkind = sRef_getAliasKind (pref); |
2221 | ||
2222 | if (alkind_isKnown (pkind) && !alkind_isLocal (pkind) | |
2223 | && !alkind_isStack (pkind)) | |
616915dd | 2224 | { |
28bf4b0b | 2225 | sRef_setAliasKind (uref, pkind, fileloc_undefined); |
2226 | sRef_setOrigAliasKind (uref, pkind); | |
616915dd | 2227 | } |
2228 | else | |
2229 | { | |
28bf4b0b | 2230 | sRef_setAliasKind (uref, AK_IMPTEMP, fileloc_undefined); |
2231 | sRef_setOrigAliasKind (uref, AK_IMPTEMP); | |
2232 | ||
2233 | if (uentry_isOut (param)) | |
2234 | { | |
2235 | ; | |
2236 | } | |
2237 | else | |
2238 | { | |
2239 | sRef_setDefined (uref, fileloc_undefined); | |
2240 | } | |
616915dd | 2241 | } |
28bf4b0b | 2242 | |
616915dd | 2243 | } |
28bf4b0b | 2244 | |
2245 | usymtab_addMustAlias (uref, pref); | |
2246 | ||
2247 | if (!(uentry_isOnly (param) || uentry_isUnique (param))) | |
2248 | { | |
2249 | /* | |
2250 | ** This is needed for detecting possibly aliased parameters. | |
2251 | */ | |
616915dd | 2252 | |
28bf4b0b | 2253 | sRef s = sRef_makeExternal (uref); |
2254 | usymtab_addMustAlias (uref, s); | |
2255 | } | |
2256 | ||
2257 | if (sRef_isKillRef (pref)) | |
2258 | { | |
2259 | sRef_setAliasKind (uref, AK_NEWREF, fileloc_undefined); | |
2260 | sRef_setOrigAliasKind (uref, AK_KILLREF); | |
2261 | } | |
2262 | else if (sRef_isRefCounted (uref)) | |
2263 | { | |
2264 | sRef_setOrigAliasKind (uref, AK_REFCOUNTED); | |
2265 | } | |
2266 | else | |
2267 | { | |
2268 | /* was AK_UNIQUE */ | |
2269 | sRef_setOrigAliasKind (uref, AK_LOCAL); | |
2270 | } | |
616915dd | 2271 | } |
2272 | else | |
2273 | { | |
616915dd | 2274 | } |
2275 | } | |
616915dd | 2276 | } end_usymtab_entries; |
28bf4b0b | 2277 | |
2278 | ||
2279 | if (uentry_hasStateClauseList (fcn)) | |
616915dd | 2280 | { |
28bf4b0b | 2281 | stateClauseList clauses = uentry_getStateClauseList (fcn); |
2282 | ||
2283 | stateClauseList_preElements (clauses, cl) | |
616915dd | 2284 | { |
28bf4b0b | 2285 | fileloc loc = stateClause_loc (cl); |
2286 | sRefSet osrs = sRefSet_undefined; | |
2287 | sRefSet srs; | |
616915dd | 2288 | |
28bf4b0b | 2289 | if (stateClause_isGlobal (cl)) |
2290 | { | |
2291 | DPRINTF (("Global Marker: %s", | |
2292 | sRef_unparseFull (usymtab_lookupGlobalMarker ()))); | |
2293 | llassert (sRef_isGlobalMarker (usymtab_lookupGlobalMarker ())); | |
2294 | srs = sRefSet_single (usymtab_lookupGlobalMarker ()); | |
2295 | osrs = srs; | |
2296 | } | |
2297 | else | |
2298 | { | |
2299 | srs = stateClause_getRefs (cl); | |
2300 | } | |
2301 | ||
2302 | sRefSet_elements (srs, el) | |
616915dd | 2303 | { |
2304 | sRef base = sRef_getRootBase (el); | |
28bf4b0b | 2305 | sRef sb = sRef_updateSref (el); |
2306 | ||
616915dd | 2307 | if (sRef_isResult (base)) |
2308 | { | |
2309 | ; /* nothing to do before */ | |
2310 | } | |
28bf4b0b | 2311 | else if (sRef_isParam (base) || sRef_isGlobalMarker (base)) |
616915dd | 2312 | { |
28bf4b0b | 2313 | if (stateClause_setsMetaState (cl)) |
616915dd | 2314 | { |
28bf4b0b | 2315 | /* copied from exprNode.c:3040 */ |
2316 | qual ql = stateClause_getMetaQual (cl); | |
2317 | annotationInfo ainfo = qual_getAnnotationInfo (ql); | |
2318 | metaStateInfo minfo = annotationInfo_getState (ainfo); | |
2319 | cstring key = metaStateInfo_getName (minfo); | |
2320 | int mvalue = annotationInfo_getValue (ainfo); | |
616915dd | 2321 | |
28bf4b0b | 2322 | DPRINTF (("Sets meta state! %s", stateClause_unparse (cl))); |
2323 | ||
2324 | if (sRef_isResult (base)) | |
616915dd | 2325 | { |
28bf4b0b | 2326 | BADBRANCH; |
2327 | } | |
2328 | else | |
2329 | { | |
2330 | sRef_setMetaStateValueComplete (sb, key, mvalue, loc); | |
2331 | } | |
2332 | } | |
2333 | else | |
2334 | { | |
2335 | sRefMod modf = stateClause_getEntryFunction (cl); | |
2336 | ||
2337 | if (modf != NULL) | |
2338 | { | |
2339 | sRefSet aliases = usymtab_allAliases (sb); | |
2340 | ||
2341 | modf (sb, loc); | |
2342 | ||
2343 | sRefSet_elements (aliases, sr) | |
2344 | { | |
2345 | modf (sr, loc); | |
2346 | } end_sRefSet_elements ; | |
2347 | ||
2348 | sRefSet_free (aliases); | |
2349 | } | |
616915dd | 2350 | } |
2351 | } | |
2352 | else | |
2353 | { | |
2354 | if (sRef_isValid (base)) | |
2355 | { | |
28bf4b0b | 2356 | DPRINTF (("Base: %s", sRef_unparseFull (base))); |
616915dd | 2357 | BADBRANCH; |
2358 | } | |
2359 | } | |
2360 | } end_sRefSet_elements ; | |
28bf4b0b | 2361 | } end_stateClauseList_preElements ; |
2362 | } | |
2363 | } | |
2364 | ||
616915dd | 2365 | void |
2366 | usymtab_enterFunctionScope (uentry fcn) | |
2367 | /*@globals utab, filetab, globtab@*/ | |
2368 | /*@modifies utab@*/ | |
2369 | { | |
2370 | usymtab t = usymtab_create (US_NORMAL, utab, TRUE); | |
2371 | ||
6483a926 | 2372 | DPRINTF (("Enter function: %s", uentry_unparse (fcn))); |
2373 | ||
616915dd | 2374 | if (utab->lexlevel != fileScope) |
2375 | { | |
2376 | if (utab->lexlevel > fileScope) | |
2377 | { | |
7ebcc5bb | 2378 | llparseerror (cstring_makeLiteral ("New function scope inside function")); |
616915dd | 2379 | |
2380 | while (utab->lexlevel > fileScope) | |
2381 | { | |
2382 | /*@i@*/ utab = usymtab_dropEnv (utab); | |
2383 | /*@-branchstate@*/ | |
2384 | } | |
2385 | /*@=branchstate@*/ | |
2386 | } | |
2387 | else | |
2388 | { | |
2389 | llfatalbug (cstring_makeLiteral ("New function not inside file.")); | |
2390 | } | |
2391 | /*@-branchstate@*/ } /*@=branchstate@*/ | |
2392 | ||
28bf4b0b | 2393 | utab = t; |
2394 | ||
2395 | DPRINTF (("Globs: %s", globSet_unparse (uentry_getGlobs (fcn)))); | |
2396 | ||
616915dd | 2397 | globSet_allElements (uentry_getGlobs (fcn), el) |
2398 | { | |
28bf4b0b | 2399 | DPRINTF (("Here we go: %s", sRef_unparseFull (el))); |
616915dd | 2400 | |
2401 | if (sRef_isUndefGlob (el)) | |
2402 | { | |
2403 | int index = sRef_getScopeIndex (el); | |
2404 | sRef sr = sRef_updateSref (el); | |
2405 | fileloc loc = uentry_whereEarliest (fcn); | |
28bf4b0b | 2406 | |
2407 | DPRINTF (("update: %s", sRef_unparseFull (sr))); | |
2408 | DPRINTF (("Undef!")); | |
616915dd | 2409 | if (sRef_isFileStatic (el)) |
2410 | { | |
2411 | ctype ct = sRef_getType (el); | |
2412 | uentry ue; | |
2413 | ||
2414 | llassert (usymtab_isDefined (filetab)); | |
2415 | ||
2416 | ue = usymtab_fetchIndex (filetab, index); | |
2417 | ||
2418 | if (ctype_isRealArray (ct) || ctype_isRealSU (ct)) | |
2419 | { | |
2420 | sRef_setAllocated (sr, loc); | |
2421 | } | |
2422 | else | |
2423 | { | |
2424 | sRef_setUndefined (sr, loc); | |
2425 | } | |
2426 | } | |
2427 | else | |
2428 | { | |
2429 | uentry ue = globtab->entries[index]; | |
2430 | ctype ct = uentry_getType (ue); | |
2431 | ||
2432 | if (ctype_isArray (ct) || ctype_isSU (ct)) | |
2433 | { | |
2434 | sRef_setAllocated (sr, loc); | |
2435 | } | |
2436 | else | |
2437 | { | |
2438 | sRef_setUndefined (sr, loc); | |
2439 | } | |
2440 | } | |
2441 | } | |
2442 | else if (sRef_isAllocated (el)) | |
2443 | { | |
2444 | sRef sr = sRef_updateSref (el); | |
2445 | fileloc loc = uentry_whereEarliest (fcn); | |
2446 | ||
2447 | sRef_setAllocated (sr, loc); | |
2448 | } | |
2449 | else if (sRef_isPartial (el)) | |
2450 | { | |
2451 | sRef sr = sRef_updateSref (el); | |
2452 | fileloc loc = uentry_whereEarliest (fcn); | |
2453 | ||
2454 | sRef_setPartial (sr, loc); | |
2455 | } | |
2456 | else | |
2457 | { | |
28bf4b0b | 2458 | /* |
2459 | sRef sr = sRef_updateSref (el); | |
2460 | fileloc loc = uentry_whereEarliest (fcn); | |
2461 | ||
2462 | sRef_setDefined (sr, loc); | |
2463 | */ | |
2464 | ||
2465 | /* defined */ | |
2466 | /* shouldn't need to do anything! */ | |
616915dd | 2467 | } |
2468 | } end_globSet_allElements; | |
2469 | ||
28bf4b0b | 2470 | DPRINTF (("Globs after: %s", globSet_unparse (uentry_getGlobs (fcn)))); |
6483a926 | 2471 | # ifdef DEBUGSPLINT |
2472 | usymtab_checkAllValid (); | |
2473 | # endif | |
616915dd | 2474 | } |
2475 | ||
2476 | static void | |
2477 | usymtab_caseBranch (void) | |
2478 | /*@modifies utab@*/ | |
2479 | { | |
2480 | usymtab t = usymtab_create (US_CBRANCH, utab, FALSE); | |
2481 | utab = t; | |
2482 | } | |
2483 | ||
2484 | void | |
2485 | usymtab_switchBranch (/*@unused@*/ exprNode s) | |
2486 | /*@modifies utab@*/ | |
2487 | { | |
2488 | usymtab t = usymtab_create (US_SWITCH, utab, FALSE); | |
2489 | ||
2490 | t->aliases = aliasTable_copy (utab->aliases); | |
28bf4b0b | 2491 | utab = t; |
616915dd | 2492 | } |
2493 | ||
2494 | void | |
2495 | usymtab_trueBranch (/*@only@*/ guardSet guards) | |
2496 | /*@modifies utab@*/ | |
2497 | { | |
2498 | usymtab t = usymtab_create (US_TBRANCH, utab, FALSE); | |
2499 | ||
2500 | /* | |
2501 | ** not true! (could be in a macro) | |
2502 | ** | |
2503 | ** llassertprint (utab->lexlevel > paramsScope, | |
2504 | ** ("not in scope: %s", usymtab_unparseLocal ())); | |
2505 | ** | |
2506 | */ | |
2507 | ||
2508 | guardSet_free (t->guards); | |
2509 | t->guards = guards; | |
28bf4b0b | 2510 | |
2511 | aliasTable_free (t->aliases); | |
616915dd | 2512 | t->aliases = aliasTable_copy (utab->aliases); |
2513 | ||
28bf4b0b | 2514 | utab = t; |
616915dd | 2515 | } |
2516 | ||
2517 | /* | |
2518 | ** consider, | |
2519 | ** | |
2520 | ** { int a; if (...) a = 3; < a may be undefined here! | |
2521 | ** | |
2522 | */ | |
2523 | ||
2524 | void | |
28bf4b0b | 2525 | usymtab_popTrueBranch (exprNode pred, exprNode expr, clause cl) /*@modifies utab@*/ |
616915dd | 2526 | { |
2527 | /* | |
2528 | ** add a false branch | |
2529 | ** (could be done more efficiently as a special case, but | |
2530 | ** it is better to only maintain one version of the code) | |
2531 | */ | |
2532 | ||
28bf4b0b | 2533 | if (utab->kind != US_TBRANCH |
2534 | && context_inIterDef ()) | |
2535 | { | |
2536 | usymtab_exitScope (expr); | |
2537 | } | |
2538 | else | |
2539 | { | |
2540 | DPRINTF (("pop true branch..")); | |
2541 | usymtab_altBranch (guardSet_invert (exprNode_getGuards (pred))); | |
2542 | usymtab_popBranches (pred, expr, exprNode_undefined, TRUE, cl); | |
2543 | } | |
616915dd | 2544 | } |
2545 | ||
2546 | void | |
2547 | usymtab_popCaseBranch () /*@modifies utab@*/ | |
2548 | { | |
2549 | llassert (utab->kind == US_CBRANCH); | |
2550 | usymtab_quietPlainExitScope (); | |
2551 | } | |
2552 | ||
2553 | void | |
2554 | usymtab_popTrueExecBranch (exprNode pred, exprNode expr, clause cl) | |
2555 | { | |
2556 | /* | |
2557 | ** add a false branch that must return --- that is, | |
2558 | ** the true branch is always executed! | |
2559 | */ | |
2560 | ||
2561 | usymtab_altBranch (guardSet_invert (exprNode_getGuards (pred))); | |
2562 | usymtab_popBranches (pred, expr, exprNode_makeMustExit (), FALSE, cl); | |
2563 | } | |
2564 | ||
2565 | void | |
2566 | usymtab_popOrBranch (exprNode pred, exprNode expr) | |
2567 | /*@modifies utab@*/ | |
2568 | { | |
2569 | bool mustReturn; | |
2570 | usymtab env = utab->env; | |
2571 | usymtab otab = utab; | |
2572 | int i = 0; | |
2573 | ||
2574 | llassert (env != NULL); | |
2575 | ||
2576 | if (exprNode_isError (expr)) | |
2577 | { | |
2578 | mustReturn = FALSE; | |
2579 | } | |
2580 | else | |
2581 | { | |
2582 | mustReturn = exprNode_mustEscape (expr); | |
2583 | } | |
2584 | ||
2585 | ||
2586 | llassert (utab->kind == US_TBRANCH); | |
2587 | ||
2588 | /* | |
2589 | ** merge each entry in table with its original | |
2590 | ** unless execution cannot continue after this branch | |
2591 | */ | |
2592 | ||
2593 | for (i = 0; i < utab->nentries; i++) | |
2594 | { | |
2595 | uentry current = utab->entries[i]; | |
2596 | uentry old = usymtab_lookupAux (env, uentry_rawName (current)); | |
2597 | ||
2598 | uentry_mergeState (old, current, exprNode_loc (expr), | |
2599 | mustReturn, FALSE, TRUE, ORCLAUSE); | |
2600 | } | |
2601 | ||
2602 | ||
2603 | if (mustReturn) | |
2604 | { | |
2605 | env->guards = guardSet_levelUnionFree (env->guards, | |
2606 | guardSet_invert (exprNode_getGuards (pred)), | |
2607 | env->lexlevel); | |
2608 | } | |
2609 | else | |
2610 | { | |
2611 | env->aliases = aliasTable_levelUnion (env->aliases, otab->aliases, env->lexlevel); | |
2612 | } | |
2613 | ||
2614 | /* env is now utab */ | |
2615 | usymtab_quietPlainExitScope (); | |
2616 | } | |
2617 | ||
2618 | /* | |
2619 | ** case syntax in C is very unrestricted. This is unfortunate. | |
2620 | ** | |
2621 | ** A switch case is ended either by a new case or default, or | |
2622 | ** a close } that may close the switch or some other control | |
2623 | ** structure. | |
2624 | */ | |
2625 | ||
2626 | bool | |
2627 | usymtab_newCase (/*@unused@*/ exprNode pred, exprNode last) | |
2628 | /*@modifies utab@*/ | |
2629 | { | |
2630 | bool mustBreak = usymtab_mustBreak (utab); | |
2631 | bool mustReturn = usymtab_mustEscape (utab); | |
2632 | usymtab stab = utab; | |
2633 | ||
7ac543fa | 2634 | DPRINTF (("New case!")); |
2635 | ||
616915dd | 2636 | /* |
2637 | ** Find last case (or outer switch) | |
2638 | */ | |
2639 | ||
2640 | while (stab->kind != US_CBRANCH && stab->kind != US_SWITCH) | |
2641 | { | |
2642 | stab = stab->env; | |
2643 | llassert (stab != GLOBAL_ENV); | |
2644 | } | |
7ac543fa | 2645 | |
616915dd | 2646 | while (stab->kind == US_CBRANCH) |
2647 | { | |
2648 | stab = stab->env; | |
2649 | llassert (stab != GLOBAL_ENV); | |
2650 | } | |
2651 | ||
2652 | /* | |
2653 | ** if its a fall through case, merge in outside entries and last case. | |
2654 | ** | |
2655 | ** e.g., | |
2656 | ** ... | |
2657 | ** switch | |
2658 | ** case 1: x = 3; <fall through> | |
2659 | ** case 2: << x may not be defined | |
2660 | ** | |
2661 | */ | |
2662 | ||
2663 | if (!mustBreak && !mustReturn && utab->kind == US_CBRANCH) | |
2664 | { | |
2665 | llassert (stab->kind == US_SWITCH || stab->kind == US_NORMAL); | |
2666 | ||
2667 | usymtab_entries (utab, ue) /* but, keep track of used variables */ | |
2668 | { | |
2669 | uentry old = usymtab_lookupAux (stab, uentry_rawName (ue)); | |
2670 | ||
2671 | llassert (uentry_isValid (old)); | |
2672 | ||
2673 | /* modifies ue, not old */ | |
2674 | ||
2675 | uentry_mergeState (ue, old, exprNode_loc (last), | |
2676 | FALSE, FALSE, TRUE, CASECLAUSE); | |
2677 | } end_usymtab_entries; | |
2678 | ||
2679 | utab->aliases = aliasTable_levelUnion (utab->aliases, | |
2680 | stab->aliases, utab->lexlevel); | |
2681 | ||
2682 | /* | |
2683 | ** No need for a new branch. | |
2684 | */ | |
2685 | ||
2686 | return FALSE; | |
2687 | } | |
2688 | else | |
2689 | { | |
2690 | usymtab_caseBranch (); | |
2691 | /*@-mustfree@*/ /*< utab->aliases >*/ | |
2692 | utab->aliases = aliasTable_copy (stab->aliases); | |
2693 | /*@=mustfree@*/ | |
2694 | ||
2695 | return TRUE; | |
2696 | } | |
2697 | } | |
2698 | ||
2699 | /* | |
2700 | ** for && (both pred and expr are executed) | |
2701 | */ | |
2702 | ||
2703 | void | |
2704 | usymtab_popAndBranch (exprNode pred, /*@unused@*/ exprNode expr) | |
2705 | /*@modifies utab@*/ | |
2706 | { | |
2707 | usymtab env = utab->env; | |
2708 | usymtab otab= utab; | |
2709 | int i = 0; | |
2710 | ||
28bf4b0b | 2711 | llassert (utab->kind == US_TBRANCH); |
616915dd | 2712 | |
2713 | /* | |
2714 | ** merge each entry in table with its original | |
2715 | ** unless execution cannot continue after this branch | |
2716 | */ | |
2717 | ||
2718 | for (i = 0; i < utab->nentries; i++) | |
2719 | { | |
2720 | uentry current = utab->entries[i]; | |
2721 | sRef tref = uentry_getSref (current); | |
2722 | uentry old = usymtab_lookupAux (env, uentry_rawName (current)); | |
2723 | sRef oref = uentry_getSref (old); | |
2724 | ||
2725 | /* note that is current is in a nested branch, | |
2726 | it may create a "new" old entry. */ | |
2727 | ||
2728 | llassert (uentry_isValid (old)); | |
2729 | uentry_mergeState (old, current, exprNode_loc (expr), | |
2730 | FALSE, FALSE, TRUE, ANDCLAUSE); | |
2731 | ||
2732 | /* | |
2733 | ** if is it defined by the second clause, then it should be defined. | |
2734 | */ | |
2735 | ||
2736 | if (sRef_isAnyDefined (tref) | |
2737 | && (sRef_isAllocated (oref) || sRef_isStateUndefined (oref))) | |
2738 | { | |
2739 | sRef_setDefined (oref, g_currentloc); | |
2740 | } | |
2741 | } | |
2742 | ||
2743 | utab->guards = guardSet_levelUnionFree (utab->guards, | |
2744 | guardSet_invert (exprNode_getGuards (pred)), | |
2745 | utab->lexlevel); | |
2746 | utab->aliases = aliasTable_levelUnion (utab->aliases, otab->aliases, utab->lexlevel); | |
2747 | ||
2748 | usymtab_quietPlainExitScope (); | |
2749 | ||
2750 | } | |
2751 | ||
2752 | /* | |
2753 | ** Stack should be [ US_CBRANCH+ US_SWITCH ] | |
2754 | ** Only branches which do not return (except possibly the last branch) are included. | |
2755 | ** | |
2756 | ** Conditionally merge state from all CBRANCHes. | |
2757 | ** | |
2758 | ** If allpaths is TRUE, then all possible executions go through some switch | |
2759 | ** case, and the original scope is not merged. | |
2760 | */ | |
2761 | ||
2762 | void | |
2763 | usymtab_exitSwitch (/*@unused@*/ exprNode sw, bool allpaths) | |
2764 | /*@modifies utab@*/ | |
2765 | { | |
2766 | usymtab ttab = utab; | |
2767 | usymtab stab = ttab; | |
2768 | usymtab ltab = ttab; | |
2769 | bool lastMustReturn = usymtab_mustEscape (utab); | |
2770 | int i; | |
2771 | ||
2772 | ||
2773 | while (stab->kind == US_CBRANCH) | |
2774 | { | |
2775 | stab = stab->env; | |
2776 | llassert (stab != GLOBAL_ENV); | |
2777 | } | |
2778 | ||
2779 | while (stab->kind == US_NORMAL) | |
2780 | { | |
2781 | stab = stab->env; | |
2782 | llassert (stab != GLOBAL_ENV); | |
2783 | } | |
2784 | ||
2785 | llassert (stab->kind == US_SWITCH); | |
2786 | ||
2787 | /* go to the scope outside the switch (US_SWITCH is just a marker! */ | |
2788 | stab = stab->env; | |
2789 | llassert (stab != GLOBAL_ENV); | |
2790 | ||
2791 | ||
2792 | ttab = ttab->env; | |
2793 | llassert (usymtab_isDefined (ttab)); | |
2794 | ||
2795 | if (ttab->kind == US_CBRANCH) | |
2796 | { | |
2797 | /* was quietPlainExitScope --- but, can't free it yet! */ | |
2798 | utab = utab->env; | |
2799 | llassert (utab != GLOBAL_ENV); | |
2800 | ||
2801 | while (ttab->kind == US_CBRANCH) | |
2802 | { | |
2803 | /* | |
2804 | ** (from popTrueBranch) | |
2805 | */ | |
2806 | ||
2807 | bool mustReturn = usymtab_mustEscape (ttab); | |
2808 | bool mustBreak = usymtab_mustBreak (ttab); | |
2809 | ||
2810 | usymtab_entries (ttab, current) | |
2811 | { | |
2812 | uentry old = /*@-compmempass@*/ usymtab_lookupAux (ltab, uentry_rawName (current)); | |
2813 | /*@=compmempass@*/ | |
2814 | ||
2815 | /* | |
2816 | ** note that is this is in a nested branch, | |
2817 | ** it may create a "new" old entry. | |
2818 | */ | |
2819 | ||
2820 | if (uentry_isValid (old)) | |
2821 | { | |
2822 | if (lastMustReturn) | |
2823 | { | |
2824 | uentry_mergeUses (current, old); | |
2825 | uentry_setState (old, current); | |
2826 | } | |
2827 | else | |
2828 | { | |
2829 | uentry_mergeState (old, current, exprNode_loc (sw), | |
2830 | mustReturn, FALSE, TRUE, SWITCHCLAUSE); | |
2831 | } | |
2832 | } | |
2833 | else | |
2834 | { | |
2835 | ; | |
2836 | } | |
2837 | } end_usymtab_entries; | |
2838 | ||
2839 | /* | |
2840 | ** if entry is not in symbol table for this case, merge with pre-switch | |
2841 | ** table | |
2842 | */ | |
2843 | ||
2844 | if (!mustReturn && !mustBreak) | |
2845 | { | |
2846 | usymtab_entries (stab, current) | |
2847 | { | |
2848 | if (usymtab_getIndex (ttab, uentry_rawName (current)) == NOT_FOUND) | |
2849 | { | |
2850 | uentry old = /*@-compmempass@*/ | |
2851 | usymtab_lookupAux (ltab, uentry_rawName (current)); | |
2852 | /*@=compmempass@*/ | |
2853 | ||
2854 | llassert (uentry_isValid (old)); | |
2855 | uentry_mergeState (old, current, exprNode_loc (sw), | |
2856 | FALSE, FALSE, TRUE, SWITCHCLAUSE); | |
2857 | } | |
2858 | } end_usymtab_entries; | |
2859 | } | |
2860 | ||
2861 | ltab->env = ttab->env; | |
2862 | ttab = ltab->env; | |
2863 | ||
2864 | /* | |
2865 | ** Suprious error, becuase of environments. | |
2866 | */ | |
2867 | ||
2868 | /*@i1@*/ utab = ltab; | |
2869 | ||
2870 | lastMustReturn = FALSE; | |
2871 | /*@-branchstate@*/ | |
2872 | } | |
2873 | } | |
2874 | /*@=branchstate@*/ | |
2875 | ||
2876 | /* | |
2877 | ** now, there is one US_CBRANCH. Merge this with the stab. | |
2878 | */ | |
2879 | ||
2880 | ||
2881 | for (i = 0; i < ltab->nentries; i++) | |
2882 | { | |
2883 | uentry current = ltab->entries[i]; | |
2884 | uentry old = usymtab_lookupAux (stab, uentry_rawName (current)); | |
2885 | ||
2886 | /* note that is this is in a nested branch, | |
2887 | it may create a "new" old entry. */ | |
2888 | ||
2889 | ||
2890 | if (uentry_isValid (old)) | |
2891 | { | |
2892 | if (allpaths) | |
2893 | { | |
2894 | uentry_mergeUses (current, old); | |
2895 | uentry_setState (old, current); | |
2896 | } | |
2897 | else | |
2898 | { | |
2899 | uentry_mergeState (old, current, exprNode_loc (sw), | |
2900 | FALSE, FALSE, TRUE, SWITCHCLAUSE); | |
2901 | } | |
2902 | } | |
2903 | else | |
2904 | { | |
2905 | } | |
2906 | } | |
2907 | ||
2908 | /* | |
2909 | ** exit the switch | |
2910 | */ | |
2911 | ||
2912 | ||
2913 | /* | |
2914 | ** switch may or may not be followed by a new scope | |
2915 | */ | |
2916 | ||
2917 | if (utab->kind == US_SWITCH) | |
2918 | { | |
2919 | usymtab_quietPlainExitScope (); | |
2920 | } | |
2921 | else | |
2922 | { | |
2923 | usymtab_quietPlainExitScope (); | |
2924 | llassert (utab->kind == US_SWITCH); | |
2925 | usymtab_quietPlainExitScope (); | |
2926 | } | |
2927 | ||
2928 | } | |
2929 | ||
2930 | static void | |
2931 | updateNullState (sRef el, /*@notnull@*/ usymtab ttab, | |
2932 | /*@notnull@*/ usymtab ftab, bool trueGuard) | |
2933 | { | |
2934 | sRef base = sRef_getRootBase (el); | |
28bf4b0b | 2935 | int level = sRef_lexLevel (base); |
616915dd | 2936 | |
2937 | if (sRef_isCvar (base)) | |
2938 | { | |
2939 | usymId index = sRef_getScopeIndex (base); | |
2940 | uentry ue = usymtab_getRefTab (ttab, level, index); | |
2941 | ||
2942 | if (!uentry_isLset (ue)) | |
2943 | { | |
2944 | sRef sr = uentry_getSref (ue); | |
2945 | ||
2946 | if (trueGuard) | |
2947 | { | |
2948 | sRef_setDerivNullState (sr, el, NS_NOTNULL); | |
2949 | } | |
2950 | else | |
2951 | { | |
2952 | if (!guardSet_isGuarded (ttab->guards, el) | |
2953 | && !sRef_isNotNull (sr)) | |
2954 | { | |
393e573f | 2955 | DPRINTF (("Here! %s / %s", |
2956 | sRef_unparseFull (sr), | |
2957 | sRef_unparseFull (el))); | |
616915dd | 2958 | sRef_setDerivNullState (sr, el, NS_DEFNULL); |
393e573f | 2959 | } |
616915dd | 2960 | } |
2961 | } | |
2962 | else | |
2963 | { | |
393e573f | 2964 | ; |
2965 | } | |
616915dd | 2966 | |
2967 | ue = usymtab_getRefTab (ftab, level, index); | |
2968 | ||
2969 | if (!uentry_isLset (ue)) | |
2970 | { | |
2971 | sRef sr = uentry_getSref (ue); | |
2972 | ||
616915dd | 2973 | if (!trueGuard) /* yikes! forgot the ! */ |
2974 | { | |
2975 | sRef_setDerivNullState (sr, el, NS_NOTNULL); | |
2976 | } | |
2977 | else | |
2978 | { | |
2979 | ||
2980 | if (!guardSet_isGuarded (ftab->guards, el) | |
2981 | && !sRef_isNotNull (sr)) | |
2982 | { | |
2983 | sRef_setDerivNullState (sr, el, NS_DEFNULL); | |
393e573f | 2984 | } |
616915dd | 2985 | } |
2986 | } | |
2987 | else | |
2988 | { | |
28bf4b0b | 2989 | ; |
2990 | } | |
2991 | } | |
2992 | } | |
616915dd | 2993 | |
2994 | void | |
2995 | usymtab_popBranches (exprNode pred, exprNode tbranch, exprNode fbranch, | |
2996 | bool isOpt, clause cl) | |
2997 | /*@modifies utab@*/ | |
2998 | { | |
2999 | int i = 0; | |
3000 | usymtab ftab = utab; | |
3001 | usymtab ttab = utab->env; | |
3002 | ||
3003 | fileloc loc; | |
3004 | usymtab env; | |
3005 | guardSet guards = exprNode_getGuards (pred); | |
3006 | sRefSet tguards = guardSet_getTrueGuards (guards); | |
3007 | sRefSet fguards = guardSet_getFalseGuards (guards); | |
3008 | bool mustReturnT = exprNode_mustEscape (tbranch); | |
3009 | bool mustReturnF = exprNode_mustEscape (fbranch); | |
28bf4b0b | 3010 | |
3011 | DPRINTF (("Pop branches: %s [mustreturn: %s/%s]", exprNode_unparse (pred), | |
3012 | bool_unparse (mustReturnT), | |
3013 | bool_unparse (mustReturnF))); | |
3014 | ||
616915dd | 3015 | if (exprNode_isDefined (fbranch)) |
3016 | { | |
3017 | loc = exprNode_loc (fbranch); | |
3018 | } | |
3019 | else | |
3020 | { | |
3021 | loc = exprNode_loc (tbranch); | |
3022 | } | |
3023 | ||
3024 | llassert (usymtab_isDefined (ttab)); | |
3025 | ||
3026 | env = ttab->env; | |
3027 | ||
3028 | llassert (usymtab_isDefined (env)); | |
3029 | llassert (ftab->kind == US_FBRANCH); | |
3030 | llassert (ttab->kind == US_TBRANCH); | |
3031 | ||
3032 | /* | |
3033 | ** For each element that is true guarded (i.e., if (x != NULL)) | |
3034 | ** make x = null in false branch, | |
3035 | ** and x = notnull in true branch. | |
3036 | ** unless x was set locally in that branch. | |
3037 | ** For each element that is false guarded (x == NULL) | |
3038 | ** make x = null in true, notnull in false. | |
3039 | ** | |
3040 | ** For each element that is either guarded (pred(x)) | |
3041 | ** | |
3042 | */ | |
3043 | ||
3044 | sRefSet_allElements (tguards, el) | |
3045 | { | |
3046 | updateNullState (el, ttab, ftab, TRUE); | |
3047 | } end_sRefSet_allElements; | |
3048 | ||
3049 | sRefSet_allElements (fguards, el) | |
3050 | { | |
3051 | updateNullState (el, ttab, ftab, FALSE); | |
3052 | } end_sRefSet_allElements; | |
3053 | ||
3054 | /* | |
3055 | ** | |
3056 | ** if an entry is in both true and false, merge the entries, | |
3057 | ** then replace original with new state. | |
3058 | ** | |
3059 | ** if an entry is in one table, merge it with the original. | |
3060 | */ | |
28bf4b0b | 3061 | |
3062 | DPRINTF (("ftab: %d", ftab->nentries)); | |
3063 | ||
616915dd | 3064 | for (i = 0; i < ftab->nentries; i++) |
3065 | { | |
3066 | uentry fthis = ftab->entries[i]; | |
3067 | uentry old = usymtab_lookupAux (env, uentry_rawName (fthis)); | |
3068 | int tindex = usymtab_getIndex (ttab, uentry_rawName (fthis)); | |
3069 | ||
28bf4b0b | 3070 | DPRINTF (("Entry: %s / %s", uentry_unparseFull (fthis), uentry_unparseFull (old))); |
3071 | ||
616915dd | 3072 | if (uentry_isUndefined (old)) |
3073 | { | |
3074 | /* possible entry was added as an undefined id */ | |
28bf4b0b | 3075 | DPRINTF (("Undefined! %s", uentry_rawName (fthis))); |
616915dd | 3076 | continue; |
3077 | } | |
3078 | ||
3079 | if (tindex != NOT_FOUND) | |
3080 | { | |
3081 | uentry tthis = ttab->entries[tindex]; | |
28bf4b0b | 3082 | |
616915dd | 3083 | /* note that is this is in a nested branch, |
3084 | it may create a "new" old entry. */ | |
3085 | ||
3086 | if (!mustReturnF) | |
3087 | { | |
3088 | if (!mustReturnT) | |
3089 | { | |
616915dd | 3090 | uentry_mergeState (fthis, tthis, loc, |
3091 | mustReturnT, FALSE, FALSE, cl); | |
3092 | } | |
3093 | else | |
3094 | { | |
3095 | uentry_mergeUses (fthis, tthis); | |
3096 | } | |
3097 | ||
3098 | uentry_setState (old, fthis); | |
3099 | ||
3100 | /*@-mustfree@*/ | |
3101 | } | |
3102 | /*@=mustfree@*/ | |
3103 | else | |
3104 | { | |
3105 | uentry_setState (old, tthis); | |
3106 | uentry_mergeState (old, fthis, loc, mustReturnF, | |
3107 | TRUE, FALSE, cl); | |
3108 | } | |
3109 | ||
3110 | ttab->entries[tindex] = uentry_undefined; | |
3111 | uentry_free (tthis); | |
3112 | } | |
3113 | else | |
3114 | { | |
3115 | uentry_mergeState (old, fthis, loc, mustReturnF, TRUE, FALSE, cl); | |
3116 | } | |
3117 | } | |
3118 | ||
3119 | for (i = 0; i < ttab->nentries; i++) | |
3120 | { | |
3121 | uentry current = ttab->entries[i]; | |
3122 | ||
28bf4b0b | 3123 | DPRINTF (("ttab: %s", uentry_unparseFull (current))); |
3124 | ||
616915dd | 3125 | if (!uentry_isUndefined (current)) |
3126 | { | |
3127 | uentry old = usymtab_lookupAux (env, uentry_rawName (current)); | |
3128 | ||
28bf4b0b | 3129 | DPRINTF (("Old: %s", uentry_unparseFull (old))); |
3130 | ||
3131 | if (uentry_isUndefined (old)) | |
3132 | { | |
3133 | llcontbug (message ("Undefined entry: %s", uentry_rawName (current))); | |
3134 | continue; | |
3135 | } | |
3136 | ||
616915dd | 3137 | if (mustReturnF) |
3138 | { | |
3139 | uentry_mergeUses (current, old); | |
3140 | uentry_setState (old, current); | |
3141 | } | |
3142 | else | |
3143 | { | |
3144 | /* | |
28bf4b0b | 3145 | ** Assumes false branch is a fall-through if |
616915dd | 3146 | ** fbranch is not defined. This is true, unless |
3147 | ** where was some greivous error in processing | |
3148 | ** the else branch of an if-then, in which case | |
3149 | ** this is probably the right thing to do anyway. | |
3150 | */ | |
3151 | ||
3152 | uentry_mergeState (old, current, loc, mustReturnT, | |
3153 | FALSE, isOpt, cl); | |
3154 | } | |
28bf4b0b | 3155 | |
3156 | DPRINTF (("==> %s", uentry_unparseFull (old))); | |
616915dd | 3157 | } |
3158 | } | |
616915dd | 3159 | |
3160 | /* | |
3161 | ** Plain levelUnion doesn't work, since we need to use the sRef's in env->aliases | |
3162 | ** if they are present. | |
3163 | */ | |
3164 | ||
3165 | llassert (NOALIAS (env->aliases, ttab->aliases)); | |
3166 | llassert (NOALIAS (env->aliases, ftab->aliases)); | |
3167 | ||
3168 | aliasTable_free (env->aliases); | |
3169 | ||
3170 | env->aliases = aliasTable_levelUnionNew (ttab->aliases, | |
3171 | ftab->aliases, env->lexlevel); | |
3172 | ||
3173 | aliasTable_fixSrefs (env->aliases); | |
28bf4b0b | 3174 | |
3175 | DPRINTF (("Aliases: %s", aliasTable_unparse (env->aliases))); | |
616915dd | 3176 | |
3177 | /* exit true and false scopes */ | |
3178 | usymtab_quietPlainExitScope (); | |
3179 | usymtab_quietPlainExitScope (); | |
3180 | ||
3181 | if (mustReturnT) | |
3182 | { | |
3183 | utab->guards = guardSet_levelUnionFree | |
3184 | (utab->guards, | |
3185 | guardSet_invert (exprNode_getGuards (pred)), | |
3186 | utab->lexlevel); | |
3187 | } | |
3188 | ||
3189 | if (mustReturnF) | |
3190 | { | |
3191 | utab->guards = guardSet_levelUnion (utab->guards, | |
3192 | exprNode_getGuards (pred), | |
3193 | utab->lexlevel); | |
3194 | } | |
3195 | ||
3196 | DPRINTF (("Here.")); | |
3197 | } | |
3198 | ||
3199 | static void usymtab_fixCases (void) /*@modifies utab@*/ { | |
3200 | while (utab->kind == US_CBRANCH) | |
3201 | { | |
3202 | usymtab_quietPlainExitScope (); | |
3203 | } | |
3204 | ||
3205 | llassert (utab->kind != US_CBRANCH); | |
3206 | } | |
3207 | ||
3208 | void | |
3209 | usymtab_altBranch (/*@only@*/ guardSet guards) | |
3210 | /*@modifies utab@*/ | |
3211 | { | |
28bf4b0b | 3212 | usymtab t; |
616915dd | 3213 | usymtab parent = utab->env; |
3214 | ||
28bf4b0b | 3215 | t = usymtab_create (US_FBRANCH, utab, FALSE); |
3216 | ||
616915dd | 3217 | /* |
3218 | ** If we are in a case, need to close it. The C syntax | |
3219 | ** is very liberal, so this kludge is necessary. | |
3220 | */ | |
3221 | ||
3222 | usymtab_fixCases (); | |
3223 | ||
3224 | DPRINTF (("Current kind: %s", usymtab_unparseStack ())); | |
28bf4b0b | 3225 | |
616915dd | 3226 | llassert (utab->kind == US_TBRANCH); |
3227 | llassert (parent != GLOBAL_ENV); | |
28bf4b0b | 3228 | |
616915dd | 3229 | guardSet_free (t->guards); |
3230 | t->guards = guards; | |
28bf4b0b | 3231 | |
616915dd | 3232 | aliasTable_free (t->aliases); |
3233 | t->aliases = aliasTable_copy (parent->aliases); | |
28bf4b0b | 3234 | |
616915dd | 3235 | utab = t; |
3236 | } | |
3237 | ||
3238 | void | |
3239 | usymtab_allDefined (void) | |
3240 | /*@globals utab, globtab@*/ | |
3241 | { | |
3242 | int i; | |
3243 | ||
3244 | llassert (utab == globtab); | |
3245 | ||
3246 | for (i = 0; i < utab->nentries; i++) | |
3247 | { | |
3248 | uentry e = utab->entries[i]; | |
3249 | ||
3250 | if (uentry_isPriv (e)) | |
3251 | { | |
3252 | ; /* no need to define it */ | |
3253 | } | |
3254 | else | |
3255 | { | |
3256 | if (context_getFlag (FLG_SPECUNDECL)) | |
3257 | { | |
3258 | fileloc sloc = uentry_whereSpecified (e); | |
3259 | fileloc dloc = uentry_whereDeclared (e); | |
3260 | ||
3261 | if (fileloc_isDefined (sloc) | |
3262 | && !uentry_isFakeTag (e) | |
3263 | && !fileloc_isDefined (dloc)) | |
3264 | { | |
3265 | voptgenerror | |
3266 | (FLG_SPECUNDECL, | |
3267 | message ("%s %q specified but not declared", | |
3268 | ekind_capName (uentry_getKind (e)), | |
3269 | uentry_getName (e)), | |
3270 | sloc); | |
3271 | } | |
3272 | } | |
3273 | ||
3274 | if (!uentry_isCodeDefined (e)) | |
3275 | { | |
3276 | fileloc dloc = uentry_whereDeclared (e); | |
3277 | ||
28bf4b0b | 3278 | if (fileloc_isLib (dloc) || fileloc_isXHFile (dloc)) |
616915dd | 3279 | { |
3280 | ; | |
3281 | } | |
3282 | else if (fileloc_isDefined (dloc)) | |
3283 | { | |
3284 | if (!uentry_isAnyTag (e)) | |
3285 | { | |
3286 | if (fileloc_isUser (dloc)) | |
3287 | { | |
3288 | voptgenerror | |
3289 | (FLG_DECLUNDEF, | |
3290 | message ("%s %q declared but not defined", | |
3291 | ekind_capName (uentry_getKind (e)), | |
3292 | uentry_getName (e)), | |
3293 | dloc); | |
efd360a3 | 3294 | DPRINTF (("decl: %s", uentry_unparseFull (e))); |
616915dd | 3295 | } |
3296 | } | |
3297 | } | |
3298 | else | |
3299 | { | |
3300 | fileloc sloc = uentry_whereSpecified (e); | |
3301 | ||
3302 | if (fileloc_isDefined (sloc) | |
3303 | && !fileloc_isImport (sloc) | |
3304 | && !fileloc_isLib (sloc) | |
3305 | && !fileloc_isPreproc (sloc) | |
3306 | && !uentry_isFakeTag (e)) | |
3307 | { | |
3308 | if (uentry_isVariable (e) || uentry_isFunction (e)) | |
3309 | { | |
3310 | voptgenerror | |
3311 | (FLG_SPECUNDEF, | |
3312 | message ("%s %q specified but not declared or defined", | |
3313 | ekind_capName (uentry_getKind (e)), | |
3314 | uentry_getName (e)), | |
3315 | sloc); | |
3316 | } | |
3317 | else | |
3318 | { | |
3319 | voptgenerror | |
3320 | (FLG_SPECUNDEF, | |
3321 | message ("%s %q specified but not defined", | |
3322 | ekind_capName (uentry_getKind (e)), | |
3323 | uentry_getName (e)), | |
3324 | sloc); | |
3325 | } | |
3326 | } | |
3327 | } | |
3328 | } | |
3329 | } | |
3330 | } | |
3331 | } | |
3332 | ||
3333 | void usymtab_exportHeader (void) | |
3334 | /*@globals utab@*/ | |
3335 | { | |
3336 | int i; | |
3337 | ||
3338 | for (i = 0; i < utab->nentries; i++) | |
3339 | { | |
3340 | uentry ce = utab->entries[i]; | |
3341 | ||
3342 | if (!uentry_isDatatype (ce) | |
3343 | && !uentry_isAnyTag (ce) | |
3344 | && !uentry_isEitherConstant (ce) && !uentry_isStatic (ce) | |
3345 | && !uentry_isExternal (ce) | |
3346 | && !uentry_isForward (ce)) | |
3347 | { | |
3348 | fileloc fwhere = uentry_whereDeclared (ce); | |
3349 | ||
3350 | if (fileloc_isUndefined (fwhere) | |
3351 | && uentry_isFunction (ce)) | |
3352 | { | |
3353 | fwhere = uentry_whereDefined (ce); | |
3354 | } | |
3355 | ||
3356 | if (fileloc_isDefined (fwhere) | |
3357 | && !fileloc_isHeader (fwhere) | |
28bf4b0b | 3358 | && !fileloc_isXHFile (fwhere) |
616915dd | 3359 | && !(fileloc_isSpecialFile (fwhere) |
3360 | && !context_getFlag (FLG_UNUSEDSPECIAL))) | |
3361 | { | |
3362 | if (uentry_isVariable (ce)) | |
3363 | { | |
3364 | if (optgenerror | |
3365 | (FLG_EXPORTHEADERVAR, | |
3366 | message ("%s %q exported but not declared in header file", | |
3367 | ekind_capName (uentry_getKind (ce)), | |
3368 | uentry_getName (ce)), | |
3369 | fwhere)) | |
3370 | { | |
3371 | uentry_showDefSpecInfo (ce, fwhere); | |
3372 | } | |
3373 | } | |
3374 | else | |
3375 | { | |
3376 | if (!uentry_isIter (ce) | |
3377 | && !uentry_isEndIter (ce) | |
3378 | && !uentry_isExpandedMacro (ce)) | |
3379 | { | |
3380 | if (uentry_isFunction (ce) | |
3381 | && cstring_equalLit (uentry_rawName (ce), "main")) | |
3382 | { | |
3383 | ; /* no error for main */ | |
3384 | } | |
3385 | else | |
3386 | { | |
3387 | if (optgenerror | |
3388 | (FLG_EXPORTHEADER, | |
3389 | message ("%s %q exported but not declared " | |
3390 | "in header file", | |
3391 | ekind_capName (uentry_getKind (ce)), | |
3392 | uentry_getName (ce)), | |
3393 | fwhere)) | |
3394 | { | |
3395 | uentry_showDefSpecInfo (ce, fwhere); | |
3396 | } | |
3397 | } | |
3398 | } | |
3399 | } | |
3400 | } | |
3401 | } | |
3402 | } | |
3403 | } | |
3404 | ||
3405 | void usymtab_exportLocal (void) | |
3406 | /*@globals utab@*/ | |
3407 | { | |
3408 | int i; | |
616915dd | 3409 | |
3410 | for (i = 0; i < utab->nentries; i++) | |
3411 | { | |
3412 | uentry ce = utab->entries[i]; | |
616915dd | 3413 | |
3414 | if (!uentry_isDatatype (ce) && !uentry_isAnyTag (ce) | |
3415 | && !uentry_isEitherConstant (ce) | |
3416 | && !uentry_isIter (ce) | |
3417 | && !uentry_isEndIter (ce) | |
3418 | && !uentry_isExpandedMacro (ce) | |
3419 | && uentry_isUsed (ce)) | |
3420 | { | |
3421 | /* check static uses */ | |
3422 | filelocList fuses = uentry_getUses (ce); | |
3423 | fileloc mod = uentry_whereDefined (ce); | |
3424 | bool ok = filelocList_isEmpty (fuses); | |
3425 | fileloc fwhere = uentry_whereDeclared (ce); | |
3426 | ||
3427 | if (fileloc_isSpecialFile (fwhere) | |
3428 | && !context_getFlag (FLG_UNUSEDSPECIAL)) | |
3429 | { | |
3430 | ok = TRUE; /* no errors for special files */ | |
3431 | } | |
3432 | else | |
3433 | { | |
3434 | filelocList_elements (fuses, uloc) | |
3435 | { | |
3436 | if (fileloc_isUndefined (uloc) || !fileloc_sameModule (uloc, mod)) | |
3437 | { | |
3438 | ok = TRUE; | |
3439 | /*@innerbreak@*/ break; | |
3440 | } | |
3441 | } end_filelocList_elements; | |
3442 | } | |
3443 | ||
3444 | if (!ok) | |
3445 | { | |
3446 | if (optgenerror | |
3447 | (FLG_EXPORTLOCAL, | |
3448 | message ("%s exported but not used outside %s: %q", | |
3449 | ekind_capName (uentry_getKind (ce)), | |
3450 | fileloc_getBase (mod), | |
3451 | uentry_getName (ce)), | |
3452 | fwhere)) | |
3453 | { | |
3454 | uentry_showDefSpecInfo (ce, fwhere); | |
3455 | } | |
3456 | } | |
3457 | } | |
3458 | } | |
3459 | } | |
3460 | ||
3461 | void | |
3462 | usymtab_allUsed (void) | |
3463 | /*@globals utab@*/ | |
3464 | { | |
3465 | int i; | |
3466 | bool isFileStatic = usymtab_inFileScope (); | |
3467 | cstring last_file = cstring_undefined; | |
3468 | ||
3469 | for (i = 0; i < utab->nentries; i++) | |
3470 | { | |
3471 | bool hasError = FALSE; | |
3472 | uentry ce = utab->entries[i]; | |
3473 | fileloc fwhere = uentry_whereDeclared (ce); | |
3474 | ||
3475 | if (fileloc_isUndefined (fwhere)) | |
3476 | { | |
3477 | fwhere = uentry_whereDefined (ce); | |
3478 | } | |
3479 | ||
3480 | if (fileloc_isInvalid (fwhere) | |
3481 | || fileloc_isLib (fwhere) | |
3482 | || fileloc_isBuiltin (fwhere) | |
3483 | || ((fileloc_isSpecialFile (fwhere) | |
3484 | || fileloc_isSpecialFile (uentry_whereDefined (ce))) | |
3485 | && !context_getFlag (FLG_UNUSEDSPECIAL))) | |
3486 | { | |
3487 | ; | |
3488 | } | |
3489 | else if (!uentry_wasUsed (ce) && !uentry_isAnyTag (ce)) | |
3490 | { | |
3491 | cstring fname = fileloc_filename (fwhere); | |
3492 | ||
3493 | if (cstring_isUndefined (last_file)) | |
3494 | { | |
3495 | last_file = fname; | |
3496 | } | |
3497 | else if (cstring_equal (fname, last_file)) | |
3498 | { | |
3499 | } | |
3500 | else | |
3501 | { | |
3502 | cleanupMessages (); | |
3503 | last_file = fname; | |
3504 | } | |
3505 | ||
3506 | if (uentry_isParam (ce)) | |
3507 | { | |
3508 | if (context_inMacro ()) | |
3509 | { | |
3510 | sRef cref = uentry_getSref (ce); | |
3511 | ||
3512 | if (uentry_isYield (ce)) | |
3513 | { | |
3514 | ; /* no checks (for now) */ | |
3515 | } | |
3516 | else if (sRef_isSafe (cref)) | |
3517 | { | |
3518 | ; /* no error */ | |
3519 | } | |
3520 | else | |
3521 | { | |
3522 | if (uentry_hasRealName (ce)) | |
3523 | { | |
3524 | hasError = | |
3525 | optgenerror (FLG_MACROPARAMS, | |
3526 | message ("Macro parameter %q not used", | |
3527 | uentry_getName (ce)), | |
3528 | fwhere); | |
3529 | } | |
3530 | } | |
3531 | } | |
3532 | else | |
3533 | { | |
3534 | if (cstring_equalFree (uentry_getName (ce), | |
3535 | cstring_makeLiteral ("..."))) | |
3536 | { | |
3537 | ; | |
3538 | } | |
3539 | else | |
3540 | { | |
3541 | hasError = optgenerror (FLG_PARAMUNUSED, | |
3542 | message ("Parameter %q not used", | |
3543 | uentry_getName (ce)), | |
3544 | fwhere); | |
3545 | } | |
3546 | } | |
3547 | } /* isParam */ | |
3548 | else if (uentry_isFunction (ce) || uentry_isIter (ce)) | |
3549 | { | |
3550 | if (fileloc_isUser (fwhere)) | |
3551 | { | |
3552 | hasError = optgenerror | |
3553 | (FLG_FUNCUNUSED, | |
3554 | message ("%q %q declared but not used", | |
3555 | cstring_makeLiteral | |
3556 | (uentry_isIter (ce) ? "Iterator" | |
3557 | : (isFileStatic ? "File static function" : "Function")), | |
3558 | uentry_getName (ce)), | |
3559 | fwhere); | |
3560 | } | |
3561 | } | |
3562 | else if (uentry_isEndIter (ce)) | |
3563 | { | |
3564 | ; /* no error (already reported for iter */ | |
3565 | } | |
3566 | else if (uentry_isEnumConstant (ce)) | |
3567 | { | |
3568 | if (fileloc_isUser (fwhere)) | |
3569 | { | |
3570 | hasError = optgenerror | |
3571 | (FLG_ENUMMEMUNUSED, | |
3572 | message ("Enum member %q not used", | |
3573 | uentry_getName (ce)), | |
3574 | fwhere); | |
3575 | } | |
3576 | } | |
3577 | else if (uentry_isConstant (ce)) | |
3578 | { | |
3579 | if (fileloc_isUser (fwhere)) | |
3580 | { | |
3581 | hasError = optgenerror | |
3582 | (FLG_CONSTUNUSED, | |
3583 | message ("Constant %q declared but not used", | |
3584 | uentry_getName (ce)), | |
3585 | fwhere); | |
3586 | } | |
3587 | } | |
3588 | else if (uentry_isDatatype (ce)) | |
3589 | { | |
3590 | if (fileloc_isUser (fwhere)) | |
3591 | { | |
3592 | hasError = optgenerror | |
3593 | (FLG_TYPEUNUSED, | |
3594 | message ("Type %q declared but not used", | |
3595 | uentry_getName (ce)), | |
3596 | fwhere); | |
3597 | } | |
3598 | } | |
3599 | else if (!uentry_isRefParam (ce) && !uentry_isExpandedMacro (ce)) | |
3600 | { /* errors for ref params will be reported in the next scope */ | |
3601 | llassertprint (uentry_isVar (ce), | |
3602 | ("ce: %s", uentry_unparseFull (ce))); | |
3603 | ||
3604 | if (ctype_isFunction (uentry_getType (ce))) | |
3605 | { | |
3606 | if (fileloc_isUser (fwhere)) | |
3607 | { | |
3608 | hasError = optgenerror | |
3609 | (FLG_FUNCUNUSED, | |
3610 | message ("%q %q declared but not used", | |
3611 | cstring_makeLiteral | |
3612 | (isFileStatic ? "File static function" | |
3613 | : "Function"), | |
3614 | uentry_getName (ce)), | |
3615 | fwhere); | |
3616 | } | |
3617 | } | |
3618 | else | |
3619 | { | |
3620 | if (fileloc_isUser (fwhere)) | |
3621 | { | |
3622 | ||
3623 | ||
3624 | hasError = optgenerror | |
3625 | (FLG_VARUNUSED, | |
3626 | message ("%q %q declared but not used", | |
3627 | cstring_makeLiteral | |
3628 | (isFileStatic ? "File static variable" | |
3629 | : "Variable"), | |
3630 | uentry_getName (ce)), | |
3631 | fwhere); | |
3632 | } | |
3633 | } | |
3634 | } | |
3635 | else | |
3636 | { | |
3637 | ; /* no errors */ | |
3638 | } | |
3639 | } /* unused */ | |
28bf4b0b | 3640 | else if ((uentry_isDatatype (ce) || uentry_isAnyTag (ce))) |
616915dd | 3641 | { /* check all fields */ |
3642 | ctype ct = uentry_getRealType (ce); | |
3643 | ||
3644 | ||
3645 | while (ctype_isAP (ct)) | |
3646 | { | |
3647 | ct = ctype_getBaseType (ct); | |
3648 | } | |
3649 | ||
616915dd | 3650 | if (ctype_isSU (ct)) |
3651 | { | |
3652 | uentryList fields = ctype_getFields (ct); | |
3653 | ||
3654 | uentryList_elements (fields, field) | |
3655 | { | |
3656 | if (!uentry_isUsed (field)) | |
3657 | { | |
3658 | if (uentry_hasName (ce)) | |
3659 | { | |
3660 | hasError |= optgenerror | |
3661 | (FLG_FIELDUNUSED, | |
3662 | message ("Field %q of %s %q declared but not used", | |
3663 | uentry_getName (field), | |
3664 | cstring_makeLiteralTemp | |
3665 | (ctype_isStruct (ct) ? "structure" : "union"), | |
3666 | uentry_getName (ce)), | |
3667 | uentry_whereEarliest (field)); | |
3668 | } | |
3669 | else | |
3670 | { | |
28bf4b0b | 3671 | /* |
3672 | ** evans 2001-06-08 | |
3673 | ** Can't report these errors for unnamed structs. | |
3674 | ** No way to tell when there are multiple consistent | |
3675 | ** unnamed structure types. (Could go through table | |
3676 | ** and mark them all unused...) | |
3677 | ||
616915dd | 3678 | hasError |= optgenerror |
3679 | (FLG_FIELDUNUSED, | |
3680 | message ("Field %q of unnamed %s declared but not used", | |
3681 | uentry_getName (field), | |
3682 | cstring_makeLiteralTemp | |
3683 | (ctype_isStruct (ct) ? "structure" : "union")), | |
3684 | uentry_whereEarliest (field)); | |
28bf4b0b | 3685 | |
3686 | */ | |
616915dd | 3687 | } |
3688 | ||
3689 | uentry_setUsed (field, fileloc_undefined); | |
3690 | } | |
3691 | } end_uentryList_elements; | |
3692 | } | |
3693 | } | |
3694 | else | |
3695 | { | |
3696 | ; /* no errors */ | |
3697 | } | |
3698 | ||
3699 | if (hasError) | |
3700 | { | |
3701 | if (uentry_isParam (ce) && context_inMacro ()) | |
3702 | { | |
3703 | if (fileloc_isDefined (uentry_whereSpecified (ce))) | |
3704 | { | |
3705 | uentry_showWhereSpecified (ce); | |
3706 | } | |
3707 | } | |
3708 | else | |
3709 | { | |
3710 | uentry_showDefSpecInfo (ce, fwhere); | |
3711 | } | |
3712 | ||
3713 | uentry_setUsed (ce, fileloc_undefined); | |
3714 | } | |
3715 | } | |
3716 | } | |
3717 | ||
3718 | static void | |
3719 | checkGlobalReturn (uentry glob, sRef orig) | |
3720 | { | |
3721 | sRef sr = uentry_getSref (glob); | |
3722 | ||
b7b694d6 | 3723 | DPRINTF (("Check global return: %s / orig: %s / sr: %s", |
28bf4b0b | 3724 | uentry_unparseFull (glob), |
3725 | sRef_unparseFull (orig), | |
3726 | sRef_unparseFull (sr))); | |
3727 | ||
3728 | DPRINTF (("Is killed: %s", bool_unparse (sRef_isKilledGlob (orig)))); | |
3729 | ||
616915dd | 3730 | if (context_getFlag (FLG_GLOBSTATE)) |
3731 | { | |
28bf4b0b | 3732 | DPRINTF (("Is killed: %s", sRef_unparseFull (orig))); |
3733 | ||
616915dd | 3734 | if (sRef_isKilledGlob (orig)) |
3735 | { | |
3736 | if (sRef_isStateUndefined (sr) | |
3737 | || sRef_isUnuseable (sr) | |
3738 | || sRef_isStateUnknown (sr) | |
3739 | || sRef_isDead (sr)) | |
3740 | { | |
3741 | ; | |
3742 | } | |
3743 | else | |
3744 | { | |
3745 | ctype ct = ctype_realType (uentry_getType (glob)); | |
393e573f | 3746 | |
2e127cb8 | 3747 | DPRINTF (("Check global destroyed: %s", uentry_unparseFull (glob))); |
3748 | ||
616915dd | 3749 | if (ctype_isVisiblySharable (ct)) |
3750 | { | |
3751 | if (optgenerror | |
3752 | (FLG_GLOBSTATE, | |
3753 | message | |
28bf4b0b | 3754 | ("Killed global %q (type %s) not released before return", |
3755 | uentry_getName (glob), | |
3756 | ctype_unparse (ct)), | |
616915dd | 3757 | g_currentloc)) |
3758 | { | |
3759 | sRef_showStateInfo (sr); | |
28bf4b0b | 3760 | } |
616915dd | 3761 | } |
3762 | else | |
3763 | { | |
28bf4b0b | 3764 | sRef_protectDerivs (); |
2e127cb8 | 3765 | (void) transferChecks_globalDestroyed (sr, g_currentloc); |
616915dd | 3766 | sRef_clearProtectDerivs (); |
3767 | } | |
3768 | } | |
3769 | } | |
3770 | else | |
3771 | { | |
3772 | if (sRef_isStateUndefined (sr)) | |
3773 | { | |
3774 | if (optgenerror (FLG_GLOBSTATE, | |
3775 | message | |
3776 | ("Function returns with global %q undefined", | |
3777 | uentry_getName (glob)), | |
3778 | g_currentloc)) | |
3779 | { | |
3780 | sRef_showStateInfo (sr); | |
3781 | } | |
3782 | } | |
3783 | else | |
3784 | { | |
7ebcc5bb | 3785 | if (sRef_isDead (sr) || sRef_isKept (sr)) |
616915dd | 3786 | { |
3787 | if (optgenerror | |
3788 | (FLG_GLOBSTATE, | |
3789 | message ("Function returns with global %q " | |
7ebcc5bb | 3790 | "referencing %s storage", |
3791 | uentry_getName (glob), | |
3792 | cstring_makeLiteralTemp (sRef_isDead (sr) ? "released" : "kept")), | |
616915dd | 3793 | g_currentloc)) |
3794 | { | |
7ebcc5bb | 3795 | if (sRef_isKept (sr)) |
3796 | { | |
3797 | sRef_showAliasInfo (sr); | |
3798 | } | |
3799 | else | |
3800 | { | |
3801 | sRef_showStateInfo (sr); | |
3802 | } | |
3803 | ||
616915dd | 3804 | sRef_setDefState (sr, SS_UNKNOWN, fileloc_undefined); |
3805 | } | |
3806 | } | |
3807 | ||
28bf4b0b | 3808 | if (ctype_isRealPointer (uentry_getType (glob)) |
3809 | && sRef_possiblyNull (sr) | |
3810 | && !uentry_possiblyNull (glob)) | |
616915dd | 3811 | { |
3812 | if (optgenerror | |
3813 | (FLG_GLOBSTATE, | |
3814 | message ("Function returns with non-null global %q " | |
3815 | "referencing null storage", | |
3816 | uentry_getName (glob)), | |
3817 | g_currentloc)) | |
3818 | { | |
3819 | sRef_showNullInfo (sr); | |
3820 | } | |
3821 | } | |
3822 | else | |
3823 | { | |
393e573f | 3824 | DPRINTF (("Check transfer: %s", uentry_unparseFull (glob))); |
2e127cb8 | 3825 | transferChecks_globalReturn (glob); |
616915dd | 3826 | } |
3827 | } | |
3828 | } | |
3829 | } | |
3830 | } | |
3831 | ||
3832 | /* | |
3833 | ** remember: check alias globals | |
3834 | */ | |
3835 | ||
3836 | void usymtab_checkFinalScope (bool isReturn) | |
3837 | /*@globals utab@*/ | |
3838 | { | |
2e127cb8 | 3839 | bool mustFree = context_getFlag (FLG_MUSTFREEONLY) || context_getFlag (FLG_MUSTFREEFRESH); /*@i423 remove this mustFree */ |
616915dd | 3840 | bool mustDefine = context_getFlag (FLG_MUSTDEFINE); |
3841 | /* bool mustNotAlias = context_getFlag (FLG_MUSTNOTALIAS); */ | |
3842 | sRefSet checked = sRefSet_new (); | |
3843 | usymtab stab = utab; | |
3844 | int i; | |
3845 | ||
3846 | /* | |
3847 | ** need to check all scopes out to function parameters. | |
3848 | */ | |
3849 | ||
3850 | do | |
3851 | { | |
3852 | for (i = 0; i < stab->nentries; i++) | |
3853 | { | |
3854 | uentry ce = stab->entries[i]; | |
3855 | sRef sr = uentry_getSref (ce); | |
3856 | sRef rb = sRef_getRootBase (sr); | |
28bf4b0b | 3857 | valueTable tvalues; |
616915dd | 3858 | |
28bf4b0b | 3859 | /* |
3860 | ** Shouldn't check if shadow checked in deeper scope: | |
3861 | */ | |
3862 | ||
3863 | if (stab != utab) | |
3864 | { | |
3865 | uentry oue = usymtab_lookupQuietNoAlt (utab, uentry_observeRealName (ce)); | |
3866 | ||
3867 | if (!uentry_sameObject (ce, oue)) | |
3868 | { | |
3869 | DPRINTF (("Skipping outer entry: %s / %s", uentry_unparseFull (ce), | |
3870 | uentry_unparseFull (oue))); | |
3871 | /*@i32 what if it is one an alternate branch? */ | |
3872 | /*@innercontinue@*/ continue; | |
3873 | } | |
3874 | } | |
3e3ec469 | 3875 | |
28bf4b0b | 3876 | DPRINTF (("Here check final scope: %s", uentry_unparseFull (ce))); |
3877 | ||
616915dd | 3878 | if (ctype_isFunction (uentry_getType (ce))) |
3879 | { | |
3880 | /*@innercontinue@*/ continue; | |
3881 | } | |
3882 | ||
28bf4b0b | 3883 | if (uentry_isAnyParam (ce) |
3884 | || uentry_isRefParam (ce) | |
3885 | || sRef_isFileOrGlobalScope (rb)) | |
3886 | { | |
3887 | /* Don't do the loseref check...but should check state! */ | |
3e3ec469 | 3888 | DPRINTF (("Skipping check 1")); |
28bf4b0b | 3889 | } |
3890 | else if (sRef_isDefinitelyNull (sr) | |
3891 | || usymtab_isDefinitelyNull (sr)) | |
3892 | { | |
3893 | /* | |
3894 | ** No state reference errors for definitely null references. | |
3895 | */ | |
3e3ec469 | 3896 | |
3897 | DPRINTF (("Skipping check 2")); | |
28bf4b0b | 3898 | } |
3899 | else | |
3900 | { | |
3901 | DPRINTF (("Lose ref: %s / %s", uentry_unparse (ce), | |
3902 | sRef_unparseFull (sr))); | |
3903 | ||
3904 | tvalues = sRef_getValueTable (sr); | |
3905 | ||
3906 | valueTable_elements (tvalues, fkey, fval) { | |
3907 | metaStateInfo minfo; | |
3908 | cstring msg = cstring_undefined; | |
3909 | int nval; | |
3910 | ||
3911 | minfo = context_lookupMetaStateInfo (fkey); | |
3912 | llassert (metaStateInfo_isDefined (minfo)); | |
3913 | ||
15b3d2b2 | 3914 | if (stateValue_isError (fval) |
3915 | || sRef_isStateUndefined (sr)) /* No errors for undefined state */ | |
28bf4b0b | 3916 | { |
3e3ec469 | 3917 | DPRINTF (("Skipping check 3")); |
28bf4b0b | 3918 | } |
3919 | else | |
3920 | { | |
3921 | DPRINTF (("Check: %s / %s / %s", fkey, | |
3922 | metaStateInfo_unparse (minfo), | |
3923 | stateValue_unparse (fval))); | |
3924 | ||
3925 | minfo = context_lookupMetaStateInfo (fkey); | |
3926 | ||
3927 | nval = stateCombinationTable_lookupLoseReference | |
3928 | (metaStateInfo_getTransferTable (minfo), | |
3929 | stateValue_getValue (fval), &msg); | |
3930 | ||
3931 | if (cstring_isDefined (msg)) | |
3932 | { | |
3933 | /*@i32 print extra info for assignments@*/ | |
3934 | DPRINTF (("From: %s", sRef_unparseFull (sr))); | |
3935 | DPRINTF (("Null? %s / %s", | |
3936 | bool_unparse (sRef_isDefinitelyNull (sr)), | |
3937 | bool_unparse (usymtab_isGuarded (sr)))); | |
3938 | ||
3939 | if (optgenerror | |
3940 | (FLG_STATETRANSFER, | |
3941 | message | |
2c88d156 | 3942 | ("%s loses reference %q in invalid state %q (%s)", |
28bf4b0b | 3943 | cstring_makeLiteralTemp (isReturn ? "Return" : "Scope exit"), |
3944 | uentry_getName (ce), | |
2c88d156 | 3945 | stateValue_unparseValue (fval, minfo), |
28bf4b0b | 3946 | msg), |
3947 | g_currentloc)) | |
3948 | { | |
3949 | stateValue_show (fval, minfo); | |
3950 | } | |
3951 | else | |
3952 | { | |
3953 | DPRINTF (("Suppressed transfer error: %s", msg)); | |
3954 | } | |
3955 | } | |
3956 | } | |
3957 | } end_valueTable_elements; | |
3958 | } | |
3959 | ||
3e3ec469 | 3960 | DPRINTF (("Here 1")); |
3961 | ||
616915dd | 3962 | if (mustFree) |
3963 | { | |
3e3ec469 | 3964 | DPRINTF (("Check mustfree entry: %s", uentry_unparseFull (ce))); |
28bf4b0b | 3965 | |
3966 | if (!sRefSet_member (checked, sr) && !sRef_isFileOrGlobalScope (rb)) | |
616915dd | 3967 | { |
3968 | if (ctype_isRealSU (uentry_getType (ce)) | |
3969 | && !uentry_isAnyParam (ce) | |
3970 | && !uentry_isRefParam (ce) | |
3971 | && !uentry_isStatic (ce) | |
3972 | && !sRef_isDependent (sr) | |
3973 | && !sRef_isOwned (sr)) | |
3974 | { | |
3975 | sRefSet als = usymtab_allAliases (sr); | |
616915dd | 3976 | |
3977 | if (sRefSet_isEmpty (als)) | |
3978 | { | |
2e127cb8 | 3979 | transferChecks_localDestroyed (sr, g_currentloc); |
616915dd | 3980 | } |
3981 | else | |
3982 | { | |
3983 | /* aliased, no problem */ ; | |
3984 | } | |
3985 | ||
3986 | sRefSet_free (als); | |
3987 | } | |
3988 | else if | |
3989 | (!uentry_isStatic (ce) | |
3990 | && ((sRef_isNewRef (sr)) | |
3991 | || (((sRef_isOnly (sr) || sRef_isFresh (sr) | |
3992 | || sRef_isKeep (sr) || sRef_isOwned (sr)) | |
3993 | && !sRef_isDead (sr)) | |
3994 | && (!sRef_definitelyNull (sr)) | |
28bf4b0b | 3995 | && (!usymtab_isDefinitelyNull (sr))))) |
616915dd | 3996 | { |
3997 | bool hasError = TRUE; | |
3998 | ||
28bf4b0b | 3999 | DPRINTF (("Checking: %s", sRef_unparseFull (sr))); |
4000 | ||
616915dd | 4001 | /* |
4002 | ** If its a scope exit, check if there is an alias. | |
4003 | ** If so, make it only. If not, there is an error. | |
4004 | */ | |
4005 | ||
4006 | if (!isReturn) | |
4007 | { | |
2e127cb8 | 4008 | if (transferChecks_canLoseReference (sr, g_currentloc)) |
616915dd | 4009 | { |
28bf4b0b | 4010 | DPRINTF (("Can lose!")); |
616915dd | 4011 | hasError = FALSE; |
4012 | } | |
4013 | } | |
4014 | ||
4015 | if (hasError) | |
4016 | { | |
4017 | if (sRef_hasLastReference (sr)) | |
4018 | { | |
4019 | sRef ar = sRef_getAliasInfoRef (sr); | |
4020 | ||
4021 | if (optgenerror | |
2e127cb8 | 4022 | (sRef_isFresh (ar) ? FLG_MUSTFREEFRESH : FLG_MUSTFREEONLY, |
616915dd | 4023 | message |
4024 | ("Last reference %q to %s storage %qnot %q before %q", | |
4025 | sRef_unparse (sr), | |
4026 | alkind_unparse (sRef_getAliasKind (sr)), | |
4027 | sRef_unparseOpt (ar), | |
4028 | cstring_makeLiteral (sRef_isKeep (sr) | |
4029 | ? "transferred" : "released"), | |
4030 | cstring_makeLiteral (isReturn | |
4031 | ? "return" : "scope exit")), | |
4032 | g_currentloc)) | |
4033 | { | |
4034 | sRef_showRefLost (sr); | |
4035 | } | |
4036 | } | |
4037 | else if (sRef_isNewRef (sr)) | |
4038 | { | |
4039 | if (optgenerror | |
2e127cb8 | 4040 | (sRef_isFresh (sr) ? FLG_MUSTFREEFRESH : FLG_MUSTFREEONLY, |
616915dd | 4041 | message |
4042 | ("%q %q not released before %q", | |
4043 | cstring_makeLiteral | |
4044 | (alkind_isKillRef (sRef_getOrigAliasKind (sr)) | |
4045 | ? "Kill reference parameter" : "New reference"), | |
4046 | uentry_getName (ce), | |
4047 | cstring_makeLiteral (isReturn | |
4048 | ? "return" : "scope exit")), | |
4049 | g_currentloc)) | |
4050 | { | |
4051 | sRef_showAliasInfo (sr); | |
4052 | } | |
4053 | } | |
4054 | else | |
4055 | { | |
4056 | if (ctype_isRealSU (sRef_getType (sr))) | |
4057 | { | |
2e127cb8 | 4058 | transferChecks_structDestroyed (sr, g_currentloc); |
616915dd | 4059 | } |
4060 | else | |
4061 | { | |
28bf4b0b | 4062 | DPRINTF (("Here we are: %s", sRef_unparseFull (sr))); |
4063 | ||
616915dd | 4064 | if (optgenerror |
2e127cb8 | 4065 | (sRef_isFresh (sr) ? FLG_MUSTFREEFRESH : FLG_MUSTFREEONLY, |
616915dd | 4066 | message |
4067 | ("%s storage %q not %q before %q", | |
4068 | alkind_capName (sRef_getAliasKind (sr)), | |
4069 | uentry_getName (ce), | |
4070 | cstring_makeLiteral (sRef_isKeep (sr) | |
4071 | ? "transferred" : "released"), | |
4072 | cstring_makeLiteral (isReturn | |
4073 | ? "return" : "scope exit")), | |
4074 | g_currentloc)) | |
4075 | { | |
4076 | sRef_showAliasInfo (sr); | |
28bf4b0b | 4077 | DPRINTF (("Storage: %s", sRef_unparseFull (sr))); |
616915dd | 4078 | } |
4079 | } | |
4080 | } | |
4081 | } | |
4082 | } | |
4083 | else | |
4084 | { | |
4085 | ; | |
4086 | } | |
4087 | } | |
3e3ec469 | 4088 | } |
4089 | ||
a956d444 | 4090 | if (mustDefine && uentry_isOut (ce)) |
3e3ec469 | 4091 | { |
a956d444 | 4092 | /* No error if its dead (either only or error already reported */ |
4093 | if (!sRef_isReallyDefined (sr) && !sRef_isDead (sr)) | |
616915dd | 4094 | { |
3e3ec469 | 4095 | voptgenerror |
4096 | (FLG_MUSTDEFINE, | |
4097 | message ("Out storage %q not defined before %q", | |
4098 | uentry_getName (ce), | |
4099 | cstring_makeLiteral | |
4100 | (isReturn ? "return" : "scope exit")), | |
4101 | g_currentloc); | |
2e127cb8 | 4102 | |
4103 | DPRINTF (("sr: %s", sRef_unparseFull (sr))); | |
616915dd | 4104 | } |
3e3ec469 | 4105 | } |
4106 | ||
4107 | /* | |
4108 | ** also check state is okay | |
4109 | */ | |
4110 | ||
4111 | if (usymtab_lexicalLevel () > functionScope | |
4112 | && uentry_isVariable (ce) | |
4113 | && (sRef_isLocalVar (sr) | |
4114 | && (sRef_isDependent (sr) || sRef_isLocalState (sr)))) | |
4115 | { | |
4116 | sRefSet ab = usymtab_aliasedBy (sr); | |
616915dd | 4117 | |
3e3ec469 | 4118 | /* should do something more efficient here */ |
28bf4b0b | 4119 | |
3e3ec469 | 4120 | if (sRefSet_isEmpty (ab)) |
616915dd | 4121 | { |
3e3ec469 | 4122 | /* and no local ref */ |
4123 | DPRINTF (("Check lose ref: %s", uentry_unparseFull (ce))); | |
2e127cb8 | 4124 | transferChecks_loseReference (ce); |
616915dd | 4125 | } |
3e3ec469 | 4126 | else |
616915dd | 4127 | { |
4128 | ; | |
4129 | } | |
4130 | ||
3e3ec469 | 4131 | sRefSet_free (ab); |
616915dd | 4132 | } |
3e3ec469 | 4133 | else |
4134 | { | |
4135 | ; | |
4136 | } | |
4137 | ||
4138 | checked = sRefSet_insert (checked, sr); | |
616915dd | 4139 | } |
28bf4b0b | 4140 | |
616915dd | 4141 | llassert (usymtab_isDefined (stab->env)); |
4142 | ||
4143 | if (usymtab_isBranch (stab)) | |
4144 | { | |
4145 | stab = usymtab_dropEnv (stab); | |
4146 | } | |
4147 | else | |
4148 | { | |
4149 | stab = stab->env; | |
4150 | } | |
28bf4b0b | 4151 | |
616915dd | 4152 | llassert (stab != usymtab_undefined); |
4153 | } while (isReturn && (stab->lexlevel >= paramsScope)); | |
28bf4b0b | 4154 | |
4155 | sRefSet_free (checked); | |
4156 | ||
616915dd | 4157 | /* |
4158 | ** for returns: | |
4159 | ** all globals are appropriately defined | |
4160 | ** all parameters are appropriately defined | |
4161 | ** special clauses are followed | |
4162 | */ | |
4163 | ||
4164 | if (isReturn || (utab->lexlevel == paramsScope)) | |
4165 | { | |
4166 | uentry fcn = context_getHeader (); | |
4167 | uentryList params = context_getParams (); | |
4168 | globSet uglobs = context_getUsedGlobs (); | |
4169 | globSet sglobs = context_getGlobs (); | |
616915dd | 4170 | |
4171 | if (isReturn && context_maybeSet (FLG_GLOBALIAS)) | |
4172 | { | |
4173 | aliasTable_checkGlobs (utab->aliases); | |
4174 | } | |
4175 | ||
4176 | /* | |
28bf4b0b | 4177 | ** state clauses (ensures, defines, sets, allocates, releases) |
616915dd | 4178 | */ |
28bf4b0b | 4179 | |
4180 | if (uentry_hasStateClauseList (fcn)) | |
616915dd | 4181 | { |
28bf4b0b | 4182 | stateClauseList clauses = uentry_getStateClauseList (fcn); |
616915dd | 4183 | |
28bf4b0b | 4184 | stateClauseList_elements (clauses, cl) |
616915dd | 4185 | { |
28bf4b0b | 4186 | if (stateClause_isAfter (cl) && !stateClause_isGlobal (cl)) |
4187 | { | |
4188 | if (stateClause_setsMetaState (cl)) | |
616915dd | 4189 | { |
28bf4b0b | 4190 | sRefSet rfs = stateClause_getRefs (cl); |
4191 | qual q = stateClause_getMetaQual (cl); | |
4192 | annotationInfo ainfo = qual_getAnnotationInfo (q); | |
4193 | metaStateInfo minfo = annotationInfo_getState (ainfo); | |
4194 | cstring key = metaStateInfo_getName (minfo); | |
4195 | int mvalue = annotationInfo_getValue (ainfo); | |
4196 | ||
4197 | DPRINTF (("Post meta state clause: %s", stateClause_unparse (cl))); | |
4198 | ||
4199 | sRefSet_elements (rfs, el) | |
616915dd | 4200 | { |
28bf4b0b | 4201 | sRef base = sRef_getRootBase (el); |
616915dd | 4202 | |
28bf4b0b | 4203 | if (sRef_isResult (base)) |
4204 | { | |
4205 | /* | |
4206 | ** This is checked for return transfers. | |
4207 | */ | |
4208 | ; | |
4209 | } | |
4210 | else if (sRef_isParam (base) || sRef_isGlobalMarker (base)) | |
616915dd | 4211 | { |
28bf4b0b | 4212 | sRef sr = sRef_updateSref (base); |
4213 | sr = sRef_fixBase (el, sr); | |
4214 | ||
4215 | if (!sRef_checkMetaStateValue (sr, key, mvalue)) | |
616915dd | 4216 | { |
28bf4b0b | 4217 | if (optgenerror |
4218 | (FLG_STATETRANSFER, | |
4219 | message | |
2c88d156 | 4220 | ("Ensures clause not satisfied%q (state is %q): %q", |
28bf4b0b | 4221 | sRef_isGlobalMarker (sr) |
4222 | ? message ("") | |
4223 | : message (" by %q", sRef_unparse (sr)), | |
4224 | stateValue_unparseValue (sRef_getMetaStateValue (sr, key), | |
4225 | minfo), | |
4226 | stateClause_unparse (cl)), | |
4227 | g_currentloc)) | |
616915dd | 4228 | { |
28bf4b0b | 4229 | sRef_showMetaStateInfo (sr, key); |
4230 | } | |
4231 | } | |
616915dd | 4232 | } |
28bf4b0b | 4233 | else |
4234 | { | |
4235 | if (sRef_isMeaningful (el)) | |
4236 | { | |
4237 | BADBRANCH; | |
4238 | } | |
4239 | } | |
4240 | } end_sRefSet_elements ; | |
4241 | } | |
4242 | else | |
4243 | { | |
4244 | /* evs - 2000 07 10 - added this */ | |
4245 | sRefTest tst = stateClause_getPostTestFunction (cl); | |
4246 | sRefSet rfs = stateClause_getRefs (cl); | |
4247 | ||
4248 | sRefSet_elements (rfs, el) | |
616915dd | 4249 | { |
28bf4b0b | 4250 | sRef base = sRef_getRootBase (el); |
4251 | ||
4252 | if (sRef_isResult (base)) | |
616915dd | 4253 | { |
28bf4b0b | 4254 | /* |
4255 | ** This is checked for return transfers. | |
4256 | */ | |
4257 | ||
4258 | ; | |
616915dd | 4259 | } |
28bf4b0b | 4260 | else if (sRef_isParam (base)) |
4261 | { | |
4262 | sRef sr = sRef_updateSref (base); | |
4263 | sr = sRef_fixBase (el, sr); | |
4264 | ||
4265 | if (tst != NULL && !tst (sr)) | |
4266 | { | |
4267 | if (optgenerror | |
4268 | (stateClause_postErrorCode (cl), | |
4269 | message ("%s storage %qcorresponds to " | |
4270 | "storage listed in %q clause", | |
4271 | stateClause_postErrorString (cl, sr), | |
4272 | sRef_unparseOpt (sr), | |
4273 | stateClause_unparseKind (cl)), | |
4274 | g_currentloc)) | |
4275 | { | |
4276 | sRefShower ss = stateClause_getPostTestShower (cl); | |
4277 | ||
4278 | if (ss != NULL) | |
4279 | { | |
4280 | ss (sr); | |
4281 | } | |
1d239d69 | 4282 | |
3120b462 | 4283 | DPRINTF (("Storage: %s", sRef_unparseFull (sr))); |
28bf4b0b | 4284 | } |
4285 | } | |
4286 | } | |
4287 | else | |
4288 | { | |
4289 | if (sRef_isMeaningful (el)) | |
4290 | { | |
4291 | BADBRANCH; | |
4292 | } | |
4293 | } | |
4294 | } end_sRefSet_elements ; | |
4295 | } | |
616915dd | 4296 | } |
28bf4b0b | 4297 | } end_stateClauseList_elements ; |
616915dd | 4298 | } |
4299 | ||
4300 | /* | |
4301 | ** check parameters on return | |
4302 | */ | |
4303 | ||
4304 | uentryList_elements (params, arg) | |
4305 | { | |
4306 | if (!uentry_isElipsisMarker (arg)) | |
4307 | { | |
4308 | ctype rt = ctype_realType (uentry_getType (arg)); | |
4309 | ||
4310 | if (ctype_isMutable (rt) || ctype_isSU (rt)) | |
4311 | { | |
4312 | uentry param = usymtab_lookupQuiet (utab, uentry_rawName (arg)); | |
28bf4b0b | 4313 | DPRINTF (("Check param return: %s", uentry_unparseFull (param))); |
2e127cb8 | 4314 | transferChecks_paramReturn (param); |
616915dd | 4315 | } |
4316 | } | |
4317 | } end_uentryList_elements; | |
4318 | ||
28bf4b0b | 4319 | DPRINTF (("Check global return: %s", |
4320 | globSet_unparse (sglobs))); | |
4321 | ||
616915dd | 4322 | globSet_allElements (sglobs, el) |
4323 | { | |
28bf4b0b | 4324 | sRef orig = el; /*! sRef_updateSref (el); */ /*!!!*/ |
616915dd | 4325 | uentry current = sRef_getUentry (el); |
4326 | ||
28bf4b0b | 4327 | DPRINTF (("Check global return: %s / %s", sRef_unparseFull (el), |
4328 | uentry_unparseFull (current))); | |
4329 | ||
616915dd | 4330 | if (uentry_isVariable (current) && !uentry_isRealFunction (current)) |
4331 | { | |
28bf4b0b | 4332 | checkGlobalReturn (current, orig); |
616915dd | 4333 | } |
4334 | } end_globSet_allElements; | |
4335 | ||
4336 | globSet_allElements (uglobs, el) | |
4337 | { | |
4338 | if (!globSet_member (sglobs, el)) | |
4339 | { | |
4340 | uentry current = sRef_getUentry (el); | |
4341 | ||
616915dd | 4342 | if (uentry_isVariable (current) |
4343 | && !uentry_isRealFunction (current)) | |
4344 | { | |
4345 | checkGlobalReturn (current, sRef_undefined); | |
4346 | } | |
4347 | } | |
4348 | } end_globSet_allElements; | |
28bf4b0b | 4349 | } |
4350 | } | |
616915dd | 4351 | |
4352 | void | |
4353 | usymtab_quietExitScope (fileloc loc) | |
4354 | /*@globals utab, globtab, filetab; @*/ | |
4355 | /*@modifies utab@*/ | |
4356 | { | |
4357 | usymtab t = utab->env; | |
4358 | ||
6fcd0b1e | 4359 | DPRINTF (("Quiet exit scope [%p]", utab)); |
4360 | ||
616915dd | 4361 | if (utab->reftable != NULL) |
4362 | { | |
4363 | int i; | |
4364 | ||
4365 | for (i = 0; i < utab->nentries; i++) | |
4366 | { | |
4367 | uentry current = utab->entries[i]; | |
4368 | uentry old = usymtab_lookupAux (t, uentry_rawName (current)); | |
4369 | ||
4370 | uentry_mergeState (old, current, loc, FALSE, FALSE, FALSE, NOCLAUSE); | |
4371 | } | |
4372 | } | |
4373 | ||
4374 | llassert (t != NULL); | |
4375 | ||
4376 | if (t->lexlevel > paramsScope) | |
4377 | { | |
4378 | t->guards = guardSet_levelUnion (t->guards, utab->guards, t->lexlevel); | |
4379 | t->aliases = aliasTable_levelUnionSeq (t->aliases, utab->aliases, | |
4380 | t->lexlevel); | |
4381 | utab->aliases = aliasTable_undefined; | |
4382 | } | |
4383 | ||
4384 | t->mustBreak = utab->mustBreak; | |
4385 | t->exitCode = utab->exitCode; | |
4386 | ||
6fcd0b1e | 4387 | DPRINTF (("Free level [%p]", utab)); |
616915dd | 4388 | usymtab_freeLevel (utab); |
4389 | ||
4390 | utab = t; | |
6483a926 | 4391 | |
4392 | # ifdef DEBUGSPLINT | |
4393 | usymtab_checkAllValid (); | |
4394 | # endif | |
616915dd | 4395 | } |
4396 | ||
4397 | /* | |
4398 | ** Exit a scope with no checking, lose alias states. | |
4399 | ** (When should this be used?) | |
4400 | */ | |
4401 | ||
4402 | void usymtab_quietPlainExitScope (void) | |
4403 | /*@globals utab, globtab, filetab@*/ | |
4404 | /*@modifies utab@*/ | |
4405 | { | |
4406 | usymtab t = utab->env; | |
4407 | ||
4408 | llassert (t != NULL); | |
4409 | llassert (NOALIAS (utab->aliases, t->aliases)); | |
4410 | usymtab_freeLevel (utab); | |
4411 | utab = t; | |
4412 | } | |
4413 | ||
4414 | void usymtab_exitScope (exprNode expr) | |
4415 | /*@globals utab, filetab, globtab@*/ | |
4416 | /*@modifies utab, globtab@*/ | |
4417 | { | |
4418 | usymtab ctab = usymtab_undefined; | |
4419 | usymtab lctab = usymtab_undefined; | |
4420 | bool mustReturn = exprNode_mustEscape (expr); | |
28bf4b0b | 4421 | |
6fcd0b1e | 4422 | DPRINTF (("Exit scope [%p]", utab)); |
28bf4b0b | 4423 | |
616915dd | 4424 | if (utab->kind == US_CBRANCH) |
4425 | { | |
4426 | /* | |
4427 | ** save the case branches, remove the first non-cbranch | |
4428 | */ | |
4429 | ||
4430 | ctab = utab; | |
4431 | ||
4432 | while (utab->kind == US_CBRANCH) | |
4433 | { | |
4434 | lctab = utab; | |
4435 | utab = utab->env; | |
4436 | llassert (utab != GLOBAL_ENV); | |
4437 | } | |
4438 | } | |
4439 | ||
4440 | if (utab->kind == US_TBRANCH || utab->kind == US_FBRANCH | |
6483a926 | 4441 | || utab->kind == US_CBRANCH || utab->kind == US_SWITCH) |
4442 | { | |
4443 | if (context_inMacro ()) | |
616915dd | 4444 | { |
6483a926 | 4445 | /* evs 2000-07-25 */ |
4446 | /* Unparseable macro may end inside nested scope. Deal with it. */ | |
4447 | ||
4448 | llerror (FLG_SYNTAX, | |
4449 | message ("Problem parsing macro body of %s (unbalanced scopes). " | |
4450 | "Attempting to recover, recommend /*@notfunction@*/ before " | |
4451 | "macro definition.", | |
4452 | context_inFunctionName ())); | |
4453 | ||
4454 | while (utab->kind == US_TBRANCH | |
4455 | || utab->kind == US_FBRANCH | |
4456 | || utab->kind == US_CBRANCH | |
4457 | || utab->kind == US_SWITCH) | |
4458 | { | |
4459 | utab = utab->env; | |
4460 | llassert (utab != GLOBAL_ENV); | |
4461 | } | |
4462 | } else | |
4463 | { | |
4464 | llcontbug (message ("exitScope: in branch: %q", usymtab_unparseStack ())); | |
4465 | /*@-branchstate@*/ | |
4466 | } /*@=branchstate@*/ | |
4467 | } | |
4468 | ||
616915dd | 4469 | /* |
4470 | ** check all variables in scope were used | |
4471 | */ | |
4472 | ||
4473 | /* | |
4474 | ** bogus errors if this is the normal inside a switch, | |
4475 | ** since cases have not been merged yet. Should probably | |
4476 | ** still check this, but I'm too lazy at the moment... | |
4477 | */ | |
4478 | ||
4479 | llassertfatal (utab->env != GLOBAL_ENV); | |
4480 | ||
4481 | if (utab->env->kind != US_SWITCH) | |
4482 | { | |
4483 | usymtab_allUsed (); | |
4484 | } | |
4485 | ||
4486 | /* | |
4487 | ** check aliasing: all only params are released (dead) | |
4488 | ** definition: all out params are defined, all modified params | |
4489 | ** are completely defined | |
4490 | ** | |
4491 | ** NOTE: note for exiting paramsScope, since checkReturn should be | |
4492 | ** called first. | |
4493 | */ | |
6483a926 | 4494 | |
616915dd | 4495 | if (!mustReturn && (usymtab_lexicalLevel () > functionScope)) |
4496 | { | |
4497 | /* | |
4498 | ** should only call this is end of scope is reachable... | |
4499 | */ | |
4500 | ||
4501 | usymtab_checkFinalScope (FALSE); | |
4502 | } | |
4503 | ||
4504 | if (usymtab_lexicalLevel () == paramsScope && context_inFunctionLike ()) | |
4505 | { | |
4506 | /* | |
4507 | ** leaving a function, need to fix up globals | |
4508 | */ | |
4509 | ||
4510 | uentryList params = context_getParams (); | |
4511 | globSet globs = context_getUsedGlobs (); | |
4512 | ||
616915dd | 4513 | uentryList_elements (params, ue) |
4514 | { | |
4515 | uentry_fixupSref (ue); | |
4516 | } end_uentryList_elements; | |
4517 | ||
4518 | clearFunctionTypes (); | |
4519 | ||
6483a926 | 4520 | DPRINTF (("Fixing up globals: %s", globSet_unparse (globs))); |
4521 | ||
616915dd | 4522 | globSet_allElements (globs, el) |
4523 | { | |
6483a926 | 4524 | DPRINTF (("Fix: %s", sRef_unparseDebug (el))); |
4525 | ||
616915dd | 4526 | if (sRef_isCvar (el)) |
4527 | { | |
4528 | uentry current; | |
4529 | int index = sRef_getScopeIndex (el); | |
4530 | ||
4531 | if (sRef_isFileStatic (el)) | |
4532 | { | |
4533 | llassert (usymtab_isDefined (filetab)); | |
4534 | current = usymtab_fetchIndex (filetab, index); | |
4535 | } | |
4536 | else | |
4537 | { | |
4538 | current = usymtab_fetchIndex (globtab, index); | |
4539 | } | |
4540 | ||
4541 | if (uentry_isVariable (current)) | |
4542 | { | |
6483a926 | 4543 | DPRINTF (("Fixup: %s", uentry_unparse (current))); |
616915dd | 4544 | uentry_fixupSref (current); |
4545 | } | |
4546 | else | |
4547 | { | |
6483a926 | 4548 | DPRINTF (("Clear: %s", uentry_getSref (current))); |
616915dd | 4549 | sRef_clearDerived (uentry_getSref (current)); |
4550 | } | |
4551 | } | |
6483a926 | 4552 | |
4553 | sRef_clearDerived (el); /* evans 2002-03-14 - this is the likely source of many crashes! */ | |
616915dd | 4554 | } end_globSet_allElements; |
4555 | } | |
4556 | ||
4557 | usymtab_quietExitScope (exprNode_loc (expr)); | |
4558 | ||
4559 | if (lctab != usymtab_undefined) | |
4560 | { | |
4561 | /*@i@*/ lctab->env = utab; | |
4562 | /*@i@*/ utab = ctab; | |
4563 | /*@-branchstate@*/ } /*@=branchstate@*/ | |
146e25eb | 4564 | /*@-globstate@*/ |
6483a926 | 4565 | |
4566 | ||
4567 | # ifdef DEBUGSPLINT | |
4568 | usymtab_checkAllValid (); | |
4569 | # endif | |
146e25eb | 4570 | /*@i523@*/ } |
616915dd | 4571 | /*@=globstate@*/ |
4572 | ||
4573 | /* | |
4574 | ** yikes! don't let the '170 kids see this one... | |
4575 | */ | |
4576 | ||
4577 | int | |
4578 | uentry_directParamNo (uentry ue) | |
4579 | { | |
4580 | if (uentry_isVar (ue)) | |
4581 | { | |
4582 | sRef sr = uentry_getSref (ue); | |
4583 | ||
4584 | if (sRef_lexLevel (sr) == functionScope) | |
4585 | { | |
abd7f895 | 4586 | int index = sRef_getScopeIndex (sr); |
616915dd | 4587 | |
4588 | if (index < uentryList_size (context_getParams ())) | |
4589 | { | |
4590 | return index; | |
4591 | } | |
4592 | } | |
4593 | } | |
4594 | return -1; | |
4595 | } | |
4596 | ||
4597 | /*@dependent@*/ /*@exposed@*/ uentry | |
4598 | usymtab_getParam (int paramno) | |
4599 | /*@globals utab@*/ | |
4600 | { | |
4601 | /* | |
4602 | ** requires in a function context (checked) | |
4603 | ** | |
4604 | ** depends on no nested functions --- the function | |
4605 | ** parameters are ALWAYS one scope inside the global scope | |
4606 | ** and entered in order! | |
4607 | */ | |
4608 | usymtab s = utab; | |
4609 | ||
4610 | if (!context_inFunctionLike ()) | |
4611 | llfatalbug (message ("usymtab_getParam: not in function context: %q", | |
4612 | context_unparse ())); | |
4613 | ||
4614 | while (s->lexlevel > paramsScope) | |
4615 | { | |
4616 | s = s->env; | |
4617 | } | |
4618 | ||
4619 | llassert (usymtab_isDefined (s)); | |
4620 | ||
4621 | if (paramno >= s->nentries) | |
4622 | { | |
4623 | /* | |
4624 | ** Parse errors lead to this. | |
4625 | */ | |
4626 | ||
4627 | uentry err = uentry_makeVariableLoc (cstring_makeLiteralTemp ("<error>"), | |
4628 | ctype_unknown); | |
4629 | ||
4630 | uentry_markOwned (err); | |
4631 | return (err); | |
4632 | } | |
4633 | ||
4634 | return (s->entries[paramno]); | |
4635 | } | |
4636 | ||
4637 | static /*@dependent@*/ /*@exposed@*/ uentry | |
4638 | usymtab_getRefTab (/*@notnull@*/ usymtab u, int level, usymId index) | |
4639 | { | |
4640 | uentry ue; | |
4641 | ||
616915dd | 4642 | ue = usymtab_getRefNoisy (u, level, index); |
4643 | ||
616915dd | 4644 | if (uentry_isUndefined (ue)) |
4645 | { | |
4646 | llbug (message ("usymtab_getRef: out of range: %d. level = %d", | |
4647 | index, level)); | |
4648 | } | |
616915dd | 4649 | |
4650 | return ue; | |
4651 | } | |
4652 | ||
4653 | static /*@dependent@*/ /*@exposed@*/ usymtab | |
4654 | usymtab_dropEnv (/*@notnull@*/ usymtab s) | |
4655 | { | |
4656 | if (s->kind == US_CBRANCH) | |
4657 | { | |
4658 | usymtab t = s; | |
4659 | ||
4660 | do | |
4661 | { | |
4662 | t = s; | |
4663 | s = s->env; | |
4664 | llassert (s != GLOBAL_ENV); | |
4665 | } while (s->kind == US_CBRANCH); | |
4666 | /* drop all cases (except in nested scopes */ | |
4667 | ||
4668 | s = t; | |
4669 | llassert (s != GLOBAL_ENV); | |
4670 | } | |
4671 | ||
4672 | if (s->kind == US_FBRANCH) | |
4673 | { | |
4674 | s = s->env; /* skip the true branch */ | |
4675 | llassert (usymtab_isDefined (s)); | |
4676 | llassert (s->kind == US_TBRANCH); | |
4677 | } | |
4678 | ||
4679 | llassert (s != GLOBAL_ENV); | |
4680 | s = s->env; | |
4681 | ||
4682 | return s; | |
4683 | } | |
4684 | ||
4685 | /*@dependent@*/ /*@exposed@*/ uentry | |
4686 | usymtab_getRefQuiet (int level, usymId index) | |
4687 | /*@globals utab@*/ | |
4688 | { | |
4689 | usymtab s = utab; | |
4690 | ||
4691 | ||
4692 | llassert (s != NULL); | |
4693 | llassert (index >= 0); | |
4694 | ||
4695 | if (level > s->lexlevel) | |
28bf4b0b | 4696 | { |
616915dd | 4697 | return uentry_undefined; |
4698 | } | |
4699 | ||
4700 | llassertprint (level <= s->lexlevel, ("level: %d / lexlevel: %d", | |
4701 | level, s->lexlevel)); | |
4702 | ||
4703 | while (s->lexlevel > level) | |
4704 | { | |
4705 | if (usymtab_isBranch (s)) | |
4706 | { | |
4707 | int eindex = refTable_lookup (s, level, index); | |
4708 | ||
4709 | if (eindex != NOT_FOUND) | |
4710 | { | |
4711 | return (s->entries[eindex]); | |
4712 | } | |
4713 | } | |
4714 | ||
4715 | s = usymtab_dropEnv (s); | |
4716 | } | |
4717 | ||
4718 | while (usymtab_isBranch (s) && s->lexlevel == level) | |
4719 | { | |
4720 | int eindex = refTable_lookup (s, level, index); | |
4721 | ||
4722 | if (eindex != NOT_FOUND) | |
4723 | { | |
4724 | return (s->entries[eindex]); | |
4725 | } | |
4726 | ||
4727 | s = usymtab_dropEnv (s); | |
4728 | } | |
4729 | ||
4730 | if (index >= s->nentries) | |
4731 | { | |
4732 | return uentry_undefined; | |
4733 | } | |
4734 | ||
4735 | llassert (!uentry_isUndefined (s->entries[index])); | |
4736 | ||
4737 | return s->entries[index]; | |
4738 | } | |
4739 | ||
4740 | static /*@dependent@*/ /*@exposed@*/ uentry | |
4741 | usymtab_getRefNoisy (/*@notnull@*/ usymtab s, int level, usymId index) | |
4742 | { | |
4743 | usymtab otab = s; | |
4744 | uentry ue = uentry_undefined; | |
616915dd | 4745 | |
4746 | llassert (index >= 0); | |
616915dd | 4747 | |
4748 | while (s->lexlevel > level) | |
4749 | { | |
616915dd | 4750 | if (usymtab_isBranch (s)) |
4751 | { | |
4752 | int eindex = refTable_lookup (s, level, index); | |
4753 | ||
4754 | if (eindex != NOT_FOUND) | |
4755 | { | |
4756 | ue = s->entries[eindex]; | |
4757 | ||
4758 | if (s != otab) | |
4759 | { | |
4760 | while (!usymtab_isBranch (otab)) | |
4761 | { | |
4762 | otab = usymtab_dropEnv (otab); | |
4763 | llassert (otab != GLOBAL_ENV); | |
4764 | } | |
4765 | ||
4766 | if (refTable_lookup (otab, level, index) == NOT_FOUND) | |
4767 | { | |
4768 | ue = usymtab_addRefEntry (otab, uentry_rawName (ue)); | |
4769 | } | |
4770 | else | |
4771 | { | |
4772 | ; | |
4773 | } | |
4774 | } | |
4775 | ||
4776 | return ue; | |
4777 | } | |
4778 | } | |
4779 | ||
4780 | s = usymtab_dropEnv (s); | |
4781 | } | |
4782 | ||
4783 | llassert (usymtab_isDefined (s)); | |
4784 | ||
4785 | while (usymtab_isBranch (s) && s->lexlevel == level) | |
4786 | { | |
4787 | int eindex = refTable_lookup (s, level, index); | |
4788 | ||
4789 | ||
4790 | if (eindex != NOT_FOUND) | |
4791 | { | |
4792 | ue = s->entries[eindex]; | |
4793 | ||
4794 | if (s != otab) | |
4795 | { | |
4796 | while (!usymtab_isBranch (otab)) | |
4797 | { | |
4798 | otab = usymtab_dropEnv (otab); | |
4799 | llassert (otab != GLOBAL_ENV); | |
4800 | } | |
4801 | ||
4802 | ue = usymtab_addRefEntry (otab, uentry_rawName (ue)); | |
4803 | } | |
4804 | else | |
4805 | { | |
4806 | ; | |
4807 | } | |
4808 | ||
4809 | return ue; | |
4810 | } | |
4811 | ||
4812 | s = usymtab_dropEnv (s); | |
4813 | } | |
4814 | ||
4815 | if (s->lexlevel == level && (index < s->nentries)) | |
4816 | { | |
4817 | ue = s->entries[index]; | |
4818 | ||
4819 | if (uentry_isValid (ue)) | |
4820 | { | |
4821 | if (s != otab) | |
4822 | { | |
4823 | while (!usymtab_isBranch (otab)) | |
4824 | { | |
4825 | otab = usymtab_dropEnv (otab); | |
4826 | ||
4827 | if (otab == GLOBAL_ENV) | |
4828 | { | |
4829 | return ue; | |
4830 | } | |
4831 | } | |
4832 | ||
4833 | ue = usymtab_addRefEntry (otab, uentry_rawName (ue)); | |
4834 | } | |
4835 | else | |
4836 | { | |
28bf4b0b | 4837 | } |
616915dd | 4838 | } |
28bf4b0b | 4839 | |
616915dd | 4840 | return ue; |
4841 | } | |
4842 | ||
4843 | ||
4844 | if (index >= s->nentries) | |
4845 | { | |
4846 | return uentry_undefined; | |
4847 | } | |
4848 | ||
4849 | llassert (!uentry_isUndefined (s->entries[index])); | |
4850 | ||
4851 | return s->entries[index]; | |
4852 | } | |
4853 | ||
4854 | /* | |
4855 | ** looking up entries | |
4856 | ** | |
4857 | ** If entry is inside a branch, then copy it, and put it into | |
4858 | ** the branch table. | |
4859 | */ | |
4860 | ||
4861 | static | |
4862 | int refTable_lookup (/*@notnull@*/ usymtab ut, int level, int index) | |
4863 | { | |
4864 | refTable rt = ut->reftable; | |
4865 | int i; | |
4866 | ||
4867 | llassert (rt != NULL); | |
4868 | ||
616915dd | 4869 | for (i = 0; i < ut->nentries; i++) |
4870 | { | |
4871 | if (rt[i]->level == level && rt[i]->index == index) | |
4872 | { | |
28bf4b0b | 4873 | return i; |
616915dd | 4874 | } |
4875 | } | |
28bf4b0b | 4876 | |
4877 | return NOT_FOUND; | |
616915dd | 4878 | } |
4879 | ||
4880 | static | |
4881 | /*@only@*/ refentry refentry_create (int level, int index) | |
4882 | { | |
4883 | refentry r = (refentry) dmalloc (sizeof (*r)); | |
4884 | ||
4885 | r->level = level; | |
4886 | r->index = index; | |
4887 | ||
4888 | return r; | |
4889 | } | |
4890 | ||
4891 | static /*@dependent@*/ /*@exposed@*/ uentry | |
4892 | usymtab_addRefEntry (/*@notnull@*/ usymtab s, cstring k) | |
4893 | { | |
4894 | int eindex; | |
4895 | usymtab ut = s; | |
4896 | ||
28bf4b0b | 4897 | if (ut->reftable == NULL) |
4898 | { | |
4899 | DPRINTF (("Adding ref entry without reftable: %s", k)); | |
4900 | return uentry_undefined; | |
4901 | } | |
616915dd | 4902 | |
28bf4b0b | 4903 | llassert (ut->reftable != NULL); |
4904 | ||
616915dd | 4905 | while (s != GLOBAL_ENV) |
4906 | { | |
4907 | eindex = usymtab_getIndex (s, k); | |
4908 | ||
4909 | if (eindex != NOT_FOUND) | |
4910 | { | |
4911 | uentry current = s->entries[eindex]; | |
4912 | ||
4913 | if (uentry_isVar (current) && !ctype_isFunction (uentry_getType (current))) | |
4914 | { | |
4915 | uentry ue; | |
4916 | ||
28bf4b0b | 4917 | DPRINTF (("Here: copying %s", uentry_unparse (current))); |
6fcd0b1e | 4918 | if (uentry_isNonLocal (current)) |
4919 | { | |
4920 | ue = uentry_copy (current); | |
4921 | } | |
4922 | else | |
4923 | { | |
4924 | ue = uentry_copyNoSave (current); | |
4925 | } | |
4926 | ||
28bf4b0b | 4927 | DPRINTF (("Here: copying %s", uentry_unparse (ue))); |
616915dd | 4928 | usymtab_addEntryQuiet (ut, ue); |
28bf4b0b | 4929 | DPRINTF (("Okay...")); |
4930 | ||
616915dd | 4931 | if (s->reftable != NULL) |
4932 | { | |
4933 | refentry ref = s->reftable[eindex]; | |
616915dd | 4934 | |
4935 | ut->reftable[ut->nentries - 1] | |
4936 | = refentry_create (ref->level, ref->index); | |
4937 | } | |
4938 | else | |
4939 | { | |
4940 | ut->reftable[ut->nentries - 1] | |
4941 | = refentry_create (s->lexlevel, eindex); | |
4942 | } | |
4943 | ||
4944 | return (ue); | |
4945 | } | |
4946 | else | |
4947 | { | |
4948 | return (current); | |
4949 | } | |
4950 | } | |
4951 | ||
4952 | s = usymtab_dropEnv (s); | |
4953 | } | |
4954 | ||
4955 | return uentry_undefined; | |
4956 | } | |
4957 | ||
4958 | static uentry usymtab_lookupAux (usymtab s, cstring k) | |
4959 | { | |
4960 | DPRINTF (("Lookup: %s", k)); | |
4961 | ||
4962 | while (s != GLOBAL_ENV) | |
4963 | { | |
4964 | int eindex = usymtab_getIndex (s, k); | |
4965 | ||
4966 | if (eindex != NOT_FOUND) | |
4967 | { | |
4968 | uentry ret = s->entries[eindex]; | |
28bf4b0b | 4969 | # if 0 |
4970 | ||
616915dd | 4971 | |
28bf4b0b | 4972 | if (s->kind == US_TBRANCH |
4973 | || s->kind == US_FBRANCH | |
4974 | || s->kind == US_CBRANCH) | |
4975 | /* uentry_isGlobalVariable (ret) && os->lexlevel > fileScope) */ | |
4976 | { | |
4977 | uentry ret; | |
4978 | DPRINTF (("Adding global ref entry: %s", k)); | |
4979 | ret = usymtab_addRefEntry (os, k); | |
4980 | DPRINTF (("Adding ref entry: %s", uentry_unparseFull (ret))); | |
4981 | return ret; | |
4982 | } | |
4983 | ||
4984 | # endif | |
616915dd | 4985 | DPRINTF (("Found: %s", uentry_unparseFull (ret))); |
4986 | return (ret); | |
4987 | } | |
28bf4b0b | 4988 | |
616915dd | 4989 | if (s->kind == US_TBRANCH || s->kind == US_FBRANCH |
4990 | || s->kind == US_CBRANCH) | |
4991 | { | |
28bf4b0b | 4992 | /* why isn't this os??? */ |
616915dd | 4993 | uentry ret = usymtab_addRefEntry (s, k); |
28bf4b0b | 4994 | DPRINTF (("Adding ref entry: %s", uentry_unparseFull (ret))); |
616915dd | 4995 | return ret; |
4996 | } | |
4997 | ||
4998 | s = s->env; | |
4999 | } | |
5000 | ||
5001 | return uentry_undefined; | |
5002 | } | |
5003 | ||
5004 | static /*@dependent@*/ /*@exposed@*/ uentry | |
28bf4b0b | 5005 | usymtab_lookupQuietAux (usymtab s, cstring k, bool noalt) |
616915dd | 5006 | { |
5007 | int eindex; | |
5008 | ||
5009 | while (s != GLOBAL_ENV) | |
5010 | { | |
5011 | eindex = usymtab_getIndex (s, k); | |
5012 | ||
5013 | if (eindex != NOT_FOUND) | |
5014 | { | |
5015 | uentry ret = s->entries[eindex]; | |
5016 | return (ret); | |
5017 | } | |
5018 | ||
28bf4b0b | 5019 | if (noalt && usymtab_isBranch (s)) |
5020 | { | |
5021 | s = usymtab_dropEnv (s); | |
5022 | } | |
5023 | else | |
5024 | { | |
abd7f895 | 5025 | llassert (s != NULL); /*@i523 should not need this? */ |
28bf4b0b | 5026 | s = s->env; |
5027 | } | |
616915dd | 5028 | } |
5029 | ||
5030 | return uentry_undefined; | |
5031 | } | |
5032 | ||
28bf4b0b | 5033 | static /*@exposed@*/ /*@dependent@*/ uentry |
5034 | usymtab_lookupQuiet (usymtab s, cstring k) | |
5035 | { | |
5036 | return usymtab_lookupQuietAux (s, k, FALSE); | |
5037 | } | |
5038 | ||
5039 | static /*@exposed@*/ /*@dependent@*/ uentry | |
5040 | usymtab_lookupQuietNoAlt (usymtab s, cstring k) | |
5041 | { | |
5042 | return usymtab_lookupQuietAux (s, k, TRUE); | |
5043 | } | |
5044 | ||
616915dd | 5045 | /*@dependent@*/ /*@observer@*/ uentry |
5046 | usymtab_lookupSafe (cstring k) | |
5047 | /*@globals utab@*/ | |
5048 | { | |
5049 | DPRINTF (("Lookup safe: %s", k)); | |
5050 | return (usymtab_lookupAux (utab, k)); | |
5051 | } | |
5052 | ||
5053 | uentry | |
5054 | usymtab_lookupExpose (cstring k) | |
5055 | /*@globals utab@*/ | |
5056 | { | |
5057 | uentry ce = usymtab_lookupAux (utab, k); | |
5058 | ||
5059 | if (uentry_isUndefined (ce)) | |
5060 | { | |
5061 | llfatalbug (message ("usymtab_lookup: not found: *%s*", k)); | |
5062 | } | |
5063 | ||
5064 | if (uentry_isPriv (ce)) | |
5065 | { | |
5066 | llfatalbug (message ("usymtab_lookup: private: *%s*", k)); | |
5067 | } | |
5068 | ||
5069 | return ce; | |
5070 | } | |
5071 | ||
5072 | uentry usymtab_lookupExposeGlob (cstring k) | |
5073 | { | |
5074 | return (usymtab_lookupGlobSafe (k)); | |
5075 | } | |
5076 | ||
5077 | uentry usymtab_lookupGlob (cstring k) | |
5078 | /*@globals globtab@*/ | |
5079 | { | |
5080 | uentry ce = usymtab_lookupAux (globtab, k); | |
5081 | ||
5082 | if (uentry_isUndefined (ce)) | |
5083 | llfatalbug (message ("usymtab_lookup: not found: %s", k)); | |
5084 | ||
5085 | if (uentry_isPriv (ce)) | |
5086 | llfatalbug (message ("usymtab_lookup: private: %s", k)); | |
5087 | ||
6483a926 | 5088 | DPRINTF (("Lookup global: %s", uentry_unparseFull (ce))); |
616915dd | 5089 | return ce; |
5090 | } | |
5091 | ||
5092 | /*@observer@*/ uentry | |
5093 | usymtab_lookupGlobSafe (cstring k) | |
5094 | /*@globals globtab@*/ | |
5095 | { | |
5096 | uentry ce = usymtab_lookupAux (globtab, k); | |
6483a926 | 5097 | DPRINTF (("Lookup global: %s", uentry_unparseFull (ce))); |
616915dd | 5098 | return ce; |
5099 | } | |
5100 | ||
5101 | uentry usymtab_lookupEither (cstring k) | |
5102 | /*@globals utab@*/ | |
5103 | { | |
5104 | uentry ce = usymtab_lookupSafe (k); | |
5105 | ||
5106 | if (uentry_isUndefined (ce)) | |
5107 | llfatalerror (message ("usymtab_lookup: not found: %s", k)); | |
5108 | ||
6483a926 | 5109 | DPRINTF (("Lookup either: %s", uentry_unparseFull (ce))); |
616915dd | 5110 | return ce; |
5111 | } | |
5112 | ||
616915dd | 5113 | ctype |
5114 | usymtab_lookupType (cstring k) | |
5115 | /*@globals globtab@*/ | |
5116 | { | |
5117 | usymId uid = usymtab_getTypeId (k); | |
5118 | ||
5119 | if (uid == USYMIDINVALID) | |
5120 | { | |
5121 | llcontbug (message ("usymtab_lookupType: not found: %s", k)); | |
5122 | return ctype_unknown; | |
5123 | } | |
5124 | ||
5125 | return (uentry_getRealType (usymtab_getTypeEntry (uid))); | |
5126 | } | |
616915dd | 5127 | |
5128 | ctype | |
5129 | usymtab_lookupAbstractType (cstring k) /*@globals globtab@*/ | |
5130 | { | |
5131 | usymId uid = usymtab_getTypeId (k); | |
5132 | ||
5133 | if (uid == USYMIDINVALID) | |
5134 | { | |
5135 | llcontbug (message ("usymtab_lookupType: not found: %s", k)); | |
5136 | return ctype_unknown; | |
5137 | } | |
5138 | ||
5139 | return (uentry_getAbstractType (usymtab_getTypeEntry (uid))); | |
5140 | } | |
5141 | ||
5142 | /* | |
5143 | ** if there is an unnamed lcl-specified struct tag matching | |
5144 | ** the uentryList, return its datatype. Otherwise, returns | |
5145 | ** ctype_undefined. | |
5146 | */ | |
5147 | ||
5148 | ctype | |
5149 | usymtab_structFieldsType (uentryList f) | |
5150 | /*@globals globtab@*/ | |
5151 | { | |
5152 | return (usymtab_suFieldsType (f, TRUE)); | |
5153 | } | |
5154 | ||
5155 | ctype | |
5156 | usymtab_unionFieldsType (uentryList f) | |
5157 | /*@globals globtab@*/ | |
5158 | { | |
5159 | return (usymtab_suFieldsType (f, FALSE)); | |
5160 | } | |
5161 | ||
5162 | static ctype | |
5163 | usymtab_suFieldsType (uentryList f, bool isStruct) | |
5164 | /*@globals globtab@*/ | |
5165 | { | |
5166 | int i; | |
5167 | ||
28bf4b0b | 5168 | DPRINTF (("Fields: %s", uentryList_unparse (f))); |
5169 | ||
5170 | if (fileloc_isSpec (g_currentloc)) | |
5171 | { | |
5172 | return (ctype_undefined); | |
5173 | } | |
616915dd | 5174 | |
5175 | for (i = 0; i < globtab->nentries; i++) | |
5176 | { | |
5177 | uentry current = globtab->entries[i]; | |
5178 | ||
5179 | if ((isStruct | |
5180 | ? uentry_isStructTag (current) : uentry_isUnionTag (current))) | |
5181 | { | |
5182 | if (isFakeTag (uentry_rawName (current))) | |
5183 | { | |
5184 | ctype ct = uentry_getType (current); | |
28bf4b0b | 5185 | |
5186 | DPRINTF (("Check: %s", ctype_unparse (ct))); | |
616915dd | 5187 | |
5188 | if ((isStruct ? ctype_isStruct (ct) : ctype_isUnion (ct)) | |
28bf4b0b | 5189 | && |
5190 | (uentry_isSpecified (current) | |
5191 | && uentryList_equivFields (f, ctype_getFields (ct)))) | |
616915dd | 5192 | { |
28bf4b0b | 5193 | return uentry_getAbstractType (current); |
5194 | } | |
5195 | else | |
5196 | { | |
5197 | ; | |
616915dd | 5198 | } |
5199 | } | |
5200 | } | |
5201 | } | |
5202 | ||
5203 | return ctype_undefined; | |
5204 | } | |
5205 | ||
5206 | ctype | |
5207 | usymtab_enumEnumNameListType (enumNameList f) | |
5208 | /*@globals globtab@*/ | |
5209 | { | |
5210 | int i; | |
5211 | ||
5212 | for (i = 0; i < globtab->nentries; i++) | |
5213 | { | |
5214 | uentry current = globtab->entries[i]; | |
5215 | ||
5216 | if (uentry_isEnumTag (current)) | |
5217 | { | |
5218 | if (isFakeTag (uentry_rawName (current))) | |
5219 | { | |
5220 | ctype ct = uentry_getType (current); | |
5221 | ||
5222 | if (ctype_isEnum (ct) && (enumNameList_match (f, ctype_elist (ct)))) | |
5223 | { | |
5224 | return uentry_getType (current); | |
5225 | } | |
5226 | } | |
5227 | } | |
5228 | } | |
5229 | ||
5230 | return ctype_undefined; | |
5231 | } | |
5232 | ||
5233 | bool | |
5234 | usymtab_exists (cstring k) | |
5235 | /*@globals utab@*/ | |
5236 | { | |
5237 | uentry ce = usymtab_lookupSafe (k); | |
616915dd | 5238 | return (!(uentry_isUndefined (ce)) && !(uentry_isPriv (ce))); |
5239 | } | |
5240 | ||
5241 | bool | |
5242 | usymtab_existsReal (cstring k) | |
5243 | /*@globals utab@*/ | |
5244 | { | |
5245 | uentry ce = usymtab_lookupSafe (k); | |
5246 | ||
5247 | return (!(uentry_isUndefined (ce)) | |
5248 | && !(uentry_isPriv (ce)) | |
5249 | && !(uentry_isExpandedMacro (ce))); | |
5250 | } | |
5251 | ||
5252 | bool | |
5253 | usymtab_existsGlob (cstring k) | |
5254 | /*@globals globtab@*/ | |
5255 | { | |
5256 | uentry ce = usymtab_lookupAux (globtab, k); | |
5257 | ||
5258 | return (!(uentry_isUndefined (ce)) && !(uentry_isPriv (ce))); | |
5259 | } | |
5260 | ||
616915dd | 5261 | bool |
5262 | usymtab_existsEither (cstring k) | |
5263 | /*@globals utab@*/ | |
5264 | { | |
5265 | uentry ce = usymtab_lookupAux (utab, k); | |
5266 | ||
5267 | return (uentry_isValid (ce)); | |
5268 | } | |
5269 | ||
5270 | bool | |
5271 | usymtab_existsGlobEither (cstring k) | |
5272 | /*@globals globtab@*/ | |
5273 | { | |
5274 | uentry ce = usymtab_lookupAux (globtab, k); | |
5275 | ||
5276 | return (uentry_isValid (ce)); | |
5277 | } | |
616915dd | 5278 | |
5279 | bool | |
5280 | usymtab_existsType (cstring k) | |
5281 | /*@globals globtab@*/ | |
5282 | { | |
5283 | uentry ce = usymtab_lookupAux (globtab, k); | |
5284 | ||
5285 | return (!(uentry_isUndefined (ce)) && !(uentry_isPriv (ce)) && uentry_isDatatype (ce)); | |
5286 | } | |
5287 | ||
5288 | bool | |
5289 | usymtab_existsTypeEither (cstring k) | |
5290 | /*@globals globtab@*/ | |
5291 | { | |
28bf4b0b | 5292 | uentry ce; |
5293 | ce = usymtab_lookupAux (globtab, k); | |
5294 | return (uentry_isValid (ce) && uentry_isDatatype (ce)); | |
616915dd | 5295 | } |
5296 | ||
5297 | bool | |
5298 | usymtab_existsStructTag (cstring k) /*@globals globtab@*/ | |
5299 | { | |
5300 | cstring sname = makeStruct (k); | |
5301 | uentry ce = usymtab_lookupAux (globtab, sname); | |
28bf4b0b | 5302 | cstring_free (sname); |
616915dd | 5303 | return (!(uentry_isUndefined (ce)) && !(uentry_isPriv (ce))); |
5304 | } | |
5305 | ||
5306 | bool | |
5307 | usymtab_existsUnionTag (cstring k) /*@globals globtab@*/ | |
5308 | { | |
5309 | cstring uname = makeUnion (k); | |
5310 | uentry ce = usymtab_lookupAux (globtab, uname); | |
5311 | ||
5312 | cstring_free (uname); | |
5313 | ||
5314 | return (!(uentry_isUndefined (ce)) && !(uentry_isPriv (ce))); | |
5315 | } | |
5316 | ||
5317 | bool | |
5318 | usymtab_existsEnumTag (cstring k) /*@globals globtab@*/ | |
5319 | { | |
5320 | cstring ename = makeEnum (k); | |
5321 | uentry ce = usymtab_lookupAux (globtab, ename); | |
5322 | ||
5323 | cstring_free (ename); | |
5324 | return (!(uentry_isUndefined (ce)) && !(uentry_isPriv (ce))); | |
5325 | } | |
5326 | ||
616915dd | 5327 | bool usymtab_existsVar (cstring k) |
5328 | /*@globals utab@*/ | |
5329 | { | |
5330 | uentry ce = usymtab_lookupSafe (k); | |
5331 | ||
5332 | return (!(uentry_isUndefined (ce)) && !(uentry_isPriv (ce)) && (uentry_isVar (ce))); | |
5333 | } | |
616915dd | 5334 | |
5335 | /* | |
5336 | ** destructors | |
5337 | */ | |
5338 | ||
5339 | static void | |
5340 | refTable_free (/*@only@*/ /*@null@*/ refTable x, int nentries) | |
5341 | { | |
5342 | if (x != NULL) | |
5343 | { | |
5344 | int i; | |
5345 | ||
5346 | for (i = 0; i < nentries; i++) | |
5347 | { | |
5348 | sfree (x[i]); | |
5349 | } | |
5350 | ||
5351 | sfree (x); | |
5352 | } | |
5353 | } | |
5354 | ||
5355 | static void | |
5356 | usymtab_freeLevel (/*@notnull@*/ /*@only@*/ usymtab u) | |
5357 | /*@globals globtab, utab, filetab@*/ | |
5358 | { | |
5359 | int i; | |
5360 | ||
6fcd0b1e | 5361 | DPRINTF (("Free level [%p]", u)); |
616915dd | 5362 | aliasTable_free (u->aliases); |
28bf4b0b | 5363 | |
616915dd | 5364 | refTable_free (u->reftable, u->nentries); |
5365 | ||
5366 | if (u == filetab || u == globtab) | |
5367 | { | |
5368 | for (i = 0; i < u->nentries; i++) | |
5369 | { | |
6fcd0b1e | 5370 | DPRINTF (("Free complete: %d", i)); |
5371 | DPRINTF (("Uentry: %s", uentry_unparse (u->entries[i]))); | |
616915dd | 5372 | uentry_freeComplete (u->entries[i]); |
6fcd0b1e | 5373 | u->entries[i] = uentry_undefined; |
616915dd | 5374 | } |
5375 | } | |
5376 | else | |
5377 | { | |
5378 | for (i = 0; i < u->nentries; i++) | |
5379 | { | |
5380 | uentry_free (u->entries[i]); | |
6fcd0b1e | 5381 | u->entries[i] = uentry_undefined; |
616915dd | 5382 | } |
5383 | } | |
5384 | ||
5385 | guardSet_free (u->guards); | |
5386 | sfree (u->entries); | |
5387 | ||
5388 | if (u != globtab | |
5389 | && u != utab | |
5390 | && u != filetab) | |
5391 | { | |
28bf4b0b | 5392 | llassert (!cstringTable_isDefined (u->htable)); |
616915dd | 5393 | } |
5394 | ||
6fcd0b1e | 5395 | sfree (u); /* evans 2002-07-12: was inside if */ |
5396 | /*:!!mustfree@*/ | |
5397 | } /*!@=mustfree@*/ | |
616915dd | 5398 | |
5399 | static void | |
5400 | usymtab_freeAux (/*@only@*/ usymtab u) | |
5401 | /*@globals globtab, utab, filetab@*/ | |
5402 | /*@modifies u@*/ | |
5403 | { | |
5404 | while (u != GLOBAL_ENV) | |
5405 | { | |
5406 | usymtab t = u->env; | |
5407 | usymtab_freeLevel (u); | |
5408 | u = t; | |
5409 | /*@-branchstate@*/ | |
5410 | } | |
5411 | /*@=branchstate@*/ | |
5412 | } | |
5413 | ||
5414 | void usymtab_free () | |
5415 | /*@globals killed utab, globtab, filetab@*/ | |
5416 | /*@modifies utab@*/ | |
5417 | { | |
5418 | dbgfree = TRUE; | |
5419 | usymtab_freeAux (utab); | |
6fcd0b1e | 5420 | utab = usymtab_undefined; |
53306cab | 5421 | /*@i523@*/ } |
616915dd | 5422 | |
5423 | static int usymtab_lexicalLevel (void) /*@globals utab@*/ | |
5424 | { | |
5425 | return (utab->lexlevel); | |
5426 | } | |
5427 | ||
5428 | bool usymtab_inGlobalScope () /*@globals utab, globtab@*/ | |
5429 | { | |
5430 | return (utab == globtab); | |
5431 | } | |
5432 | ||
5433 | bool usymtab_inFileScope () /*@globals utab@*/ | |
5434 | { | |
5435 | return (utab->lexlevel == fileScope); | |
5436 | } | |
5437 | ||
5438 | bool usymtab_inFunctionScope () /*@globals utab@*/ | |
5439 | { | |
5440 | return (utab->lexlevel == functionScope); | |
5441 | } | |
5442 | ||
616915dd | 5443 | void |
5444 | usymtab_replaceEntry (uentry s) | |
5445 | /*@globals utab, globtab@*/ | |
5446 | /*@modifies utab, s@*/ | |
5447 | { | |
5448 | usymtab_replaceEntryAux (utab, s); | |
5449 | } | |
616915dd | 5450 | |
5451 | bool | |
5452 | usymtab_matchForwardStruct (usymId u1, usymId u2) | |
5453 | /*@globals globtab@*/ | |
5454 | { | |
5455 | uentry ue1 = usymtab_getTypeEntry (u1); | |
5456 | uentry ue2 = usymtab_getTypeEntry (u2); | |
5457 | ||
5458 | if (uentry_isAnyTag (ue2)) | |
5459 | { | |
5460 | ctype reptype = uentry_getType (ue1); | |
5461 | ||
5462 | if (ctype_isPointer (reptype)) | |
5463 | { | |
5464 | ctype repbase = ctype_getBaseType (reptype); | |
5465 | ||
5466 | if (ctype_isUA (repbase)) | |
5467 | { | |
5468 | typeId rtuid = ctype_typeId (repbase); | |
5469 | ||
5470 | if (u2 == rtuid) return TRUE; | |
5471 | ||
5472 | if (usymId_isValid (rtuid)) | |
5473 | { | |
5474 | reptype = uentry_getType (usymtab_getTypeEntry (rtuid)); | |
5475 | ||
5476 | return (ctype_isUA (reptype) && (u2 == (ctype_typeId (reptype)))); | |
5477 | } | |
5478 | } | |
5479 | } | |
5480 | } | |
5481 | ||
5482 | return FALSE; | |
5483 | } | |
5484 | ||
5485 | void usymtab_addGuards (guardSet guards) | |
5486 | /*@modifies utab@*/ | |
5487 | { | |
5488 | utab->guards = guardSet_union (utab->guards, guards); | |
5489 | } | |
5490 | ||
5491 | static bool usymtab_isGuardedAux (sRef s) | |
5492 | /*@globals utab@*/ | |
5493 | { | |
5494 | usymtab tab = utab; | |
5495 | sRef base = sRef_getRootBase (s); | |
5496 | int lowlevel = paramsScope; | |
5497 | int baselevel = sRef_lexLevel (base); | |
5498 | ||
5499 | if (sRef_isCvar (base)) | |
5500 | { | |
5501 | lowlevel = baselevel; | |
5502 | if (lowlevel < paramsScope) lowlevel = paramsScope; | |
5503 | } | |
5504 | ||
5505 | while (tab->lexlevel >= lowlevel) | |
5506 | { | |
2209bcb7 | 5507 | DPRINTF (("Is guarded? [%s] %s", |
5508 | guardSet_unparse (tab->guards), | |
5509 | sRef_unparseFull (s))); | |
5510 | ||
616915dd | 5511 | if (guardSet_isGuarded (tab->guards, s)) |
5512 | { | |
5513 | /* | |
5514 | if (!sRef_definitelyNull (s)) | |
5515 | { | |
5516 | sRef_setNotNull (s, fileloc_undefined); | |
5517 | } | |
5518 | */ | |
5519 | return TRUE; | |
5520 | } | |
5521 | ||
5522 | tab = usymtab_dropEnv (tab); | |
5523 | } | |
5524 | ||
5525 | return FALSE; | |
5526 | } | |
5527 | ||
5528 | void usymtab_unguard (sRef s) /*@modifies utab@*/ | |
5529 | { | |
5530 | usymtab tab = utab; | |
5531 | sRef base = sRef_getRootBase (s); | |
5532 | int lowlevel = paramsScope; | |
5533 | int baselevel = sRef_lexLevel (base); | |
5534 | ||
5535 | if (sRef_isCvar (base)) | |
5536 | { | |
5537 | lowlevel = baselevel; | |
5538 | if (lowlevel < paramsScope) lowlevel = paramsScope; | |
5539 | } | |
5540 | ||
5541 | while (tab->lexlevel >= lowlevel) | |
5542 | { | |
5543 | if (guardSet_isGuarded (tab->guards, s)) | |
5544 | { | |
5545 | guardSet_delete (tab->guards, s); | |
5546 | } | |
5547 | ||
5548 | tab = usymtab_dropEnv (tab); | |
5549 | } | |
5550 | } | |
5551 | ||
5552 | bool usymtab_isGuarded (sRef s) | |
5553 | { | |
2209bcb7 | 5554 | DPRINTF (("Is guarded? %s", sRef_unparseFull (s))); |
616915dd | 5555 | return (sRef_aliasCompleteSimplePred (usymtab_isGuardedAux, s)); |
5556 | } | |
5557 | ||
28bf4b0b | 5558 | bool usymtab_isDefinitelyNull (sRef s) |
616915dd | 5559 | { |
28bf4b0b | 5560 | return (sRef_aliasCheckSimplePred (usymtab_isDefinitelyNullAux, s)); |
616915dd | 5561 | } |
5562 | ||
28bf4b0b | 5563 | bool usymtab_isDefinitelyNullDeep (sRef s) |
616915dd | 5564 | { |
28bf4b0b | 5565 | return (sRef_deepPred (usymtab_isDefinitelyNull, s)); |
616915dd | 5566 | } |
5567 | ||
28bf4b0b | 5568 | static bool usymtab_isDefinitelyNullAux (sRef s) |
616915dd | 5569 | /*@globals utab@*/ |
5570 | { | |
5571 | usymtab tab = utab; | |
5572 | sRef base = sRef_getRootBase (s); | |
5573 | int lowlevel = paramsScope; | |
5574 | ||
5575 | if (sRef_isCvar (base)) | |
5576 | { | |
5577 | lowlevel = sRef_lexLevel (base); | |
5578 | if (lowlevel < paramsScope) lowlevel = paramsScope; | |
5579 | } | |
5580 | ||
5581 | while (tab->lexlevel >= lowlevel) | |
5582 | { | |
28bf4b0b | 5583 | if (guardSet_mustBeNull (tab->guards, s)) |
616915dd | 5584 | { |
5585 | return TRUE; | |
5586 | } | |
5587 | ||
5588 | while (tab->kind == US_CBRANCH) | |
5589 | { | |
5590 | tab = tab->env; | |
5591 | } | |
5592 | ||
5593 | llassert (usymtab_isDefined (tab)); | |
5594 | ||
5595 | if (tab->kind == US_FBRANCH) | |
5596 | { | |
5597 | tab = tab->env; | |
5598 | llassert (tab->kind == US_TBRANCH); | |
5599 | } | |
5600 | ||
5601 | tab = tab->env; | |
5602 | } | |
5603 | ||
5604 | return FALSE; | |
5605 | } | |
5606 | ||
5607 | void | |
5608 | usymtab_printGuards () | |
5609 | /*@globals utab, globtab@*/ | |
5610 | { | |
5611 | usymtab ttab = utab; | |
5612 | ||
5613 | while (ttab != globtab) | |
5614 | { | |
5615 | llmsg (message ("Guards [%d]: %q", ttab->lexlevel, | |
5616 | guardSet_unparse (ttab->guards))); | |
5617 | ttab = ttab->env; | |
5618 | } | |
5619 | } | |
5620 | ||
5621 | void | |
5622 | usymtab_displayAllUses () | |
5623 | /*@globals utab, globtab@*/ | |
5624 | { | |
5625 | usymtab copy; | |
5626 | ||
5627 | /* only in top scope */ | |
5628 | llassert (utab == globtab); | |
5629 | ||
5630 | /* need a copy, so order is not messed up by sort! */ | |
5631 | copy = usymtab_shallowCopy (globtab); | |
5632 | ||
5633 | qsort (copy->entries, (size_t)copy->nentries, | |
5634 | sizeof (*copy->entries), (int (*)(const void *, const void *)) uentry_xcompareuses); | |
5635 | ||
5636 | usymtab_entries (copy, ue) | |
5637 | { | |
37ae0b5e | 5638 | if (uentry_isValid (ue) && !uentry_isGlobalMarker (ue)) |
616915dd | 5639 | { |
5640 | filelocList uses = uentry_getUses (ue); | |
5641 | int size = filelocList_realSize (uses); | |
5642 | ||
5643 | if (fileloc_isDefined (uentry_whereDefined (ue)) | |
5644 | && !fileloc_isLib (uentry_whereDefined (ue)) | |
5645 | && (size > 0)) | |
5646 | { | |
28bf4b0b | 5647 | llmsg (message ("%q (%q), %d use%&:\n %q", |
616915dd | 5648 | uentry_getName (ue), |
5649 | fileloc_unparse (uentry_whereDefined (ue)), | |
5650 | size, filelocList_unparseUses (uses))); | |
5651 | } | |
5652 | } | |
5653 | } end_usymtab_entries; | |
5654 | ||
5655 | usymtab_shallowFree (copy); | |
5656 | } | |
5657 | ||
5658 | static /*@dependent@*/ /*@exposed@*/ usymtab | |
5659 | usymtab_getFileTab () | |
5660 | /*@globals filetab@*/ | |
5661 | { | |
5662 | llassert (filetab != NULL); | |
5663 | ||
5664 | return filetab; | |
5665 | } | |
5666 | ||
5667 | /*@only@*/ cstring | |
5668 | usymtab_unparseStack () | |
5669 | /*@globals utab@*/ | |
5670 | { | |
5671 | return (usymtab_unparseStackTab (utab)); | |
5672 | } | |
5673 | ||
5674 | static /*@only@*/ cstring | |
5675 | usymtab_unparseStackTab (usymtab t) | |
5676 | { | |
5677 | bool firstOne = TRUE; | |
5678 | cstring ret = cstring_makeLiteral ("["); | |
5679 | ||
5680 | while (t != GLOBAL_ENV) | |
5681 | { | |
5682 | if (firstOne) | |
5683 | { | |
5684 | ret = message ("%q %q", ret, usymtab_typeName (t)); | |
5685 | firstOne = FALSE; | |
5686 | } | |
5687 | else | |
5688 | { | |
5689 | ret = message ("%q, %q", ret, usymtab_typeName (t)); | |
5690 | } | |
5691 | t = t->env; | |
5692 | } | |
5693 | ||
5694 | ret = message ("%q ]", ret); | |
5695 | return ret; | |
5696 | } | |
5697 | ||
5698 | static /*@only@*/ cstring | |
5699 | usymtab_typeName (/*@notnull@*/ usymtab t) | |
5700 | { | |
5701 | switch (t->kind) | |
5702 | { | |
5703 | case US_GLOBAL: return cstring_makeLiteral ("global"); | |
5704 | case US_NORMAL: return cstring_makeLiteral ("normal"); | |
5705 | case US_TBRANCH: return cstring_makeLiteral ("true"); | |
5706 | case US_FBRANCH: return cstring_makeLiteral ("false"); | |
5707 | case US_CBRANCH: return cstring_makeLiteral ("case"); | |
5708 | case US_SWITCH: return cstring_makeLiteral ("switch"); | |
5709 | } | |
5710 | ||
5711 | BADEXIT; | |
5712 | } | |
5713 | ||
28bf4b0b | 5714 | void usymtab_addMustAlias (/*@exposed@*/ sRef s, /*@exposed@*/ sRef al) |
616915dd | 5715 | /*@modifies utab@*/ |
5716 | { | |
28bf4b0b | 5717 | if (!sRef_similar (s, al)) |
616915dd | 5718 | { |
28bf4b0b | 5719 | usymtab_addForceMustAlias (s, al); |
616915dd | 5720 | } |
5721 | } | |
5722 | ||
5723 | /* | |
5724 | ** Same as usymtab_addMustAlias, except does not check sRef_isSimilar. | |
5725 | */ | |
5726 | ||
28bf4b0b | 5727 | void usymtab_addForceMustAlias (/*@exposed@*/ sRef s, /*@exposed@*/ sRef al) |
616915dd | 5728 | /*@modifies utab@*/ |
5729 | { | |
393e573f | 5730 | /* evans 2002-03-3: was sRef_isMeaningful -- but we need to keep aliases for new storage also! */ |
616915dd | 5731 | if (sRef_isMeaningful (s) |
5732 | && sRef_isMeaningful (al) | |
5733 | && !(sRef_isConst (s) || sRef_isConst (al)) | |
5734 | && !(sRef_isAddress (al) && sRef_isDirectParam (sRef_getBase (al)))) | |
5735 | { | |
5736 | utab->aliases = aliasTable_addMustAlias (utab->aliases, s, al); | |
5737 | DPRINTF (("Must alias: %s", aliasTable_unparse (utab->aliases))); | |
5738 | ||
5739 | /* | |
5740 | ** for local variable, aliasing is symmetric | |
5741 | */ | |
5742 | ||
5743 | if (sRef_isLocalVar (s) && sRef_isLocalVar (al)) | |
5744 | { | |
5745 | utab->aliases = aliasTable_addMustAlias (utab->aliases, al, s); | |
5746 | } | |
5747 | } | |
5748 | else | |
5749 | { | |
393e573f | 5750 | DPRINTF (("Not aliasing! %s / %s", sRef_unparseFull (s), sRef_unparseFull (al))); |
5751 | DPRINTF (("meaningful: %d %d", sRef_isMeaningful (s), sRef_isMeaningful (al))); | |
616915dd | 5752 | } |
5753 | } | |
5754 | ||
393e573f | 5755 | void usymtab_addReallyForceMustAlias (/*@exposed@*/ sRef s, /*@exposed@*/ sRef al) |
5756 | /*@modifies utab@*/ | |
5757 | { | |
5758 | utab->aliases = aliasTable_addMustAlias (utab->aliases, s, al); | |
5759 | } | |
5760 | ||
616915dd | 5761 | void usymtab_clearAlias (sRef s) |
5762 | /*@modifies utab, s@*/ | |
5763 | { | |
5764 | ||
5765 | aliasTable_clearAliases (utab->aliases, s); | |
5766 | } | |
5767 | ||
5768 | sRefSet usymtab_allAliases (sRef s) | |
5769 | /*@globals utab@*/ | |
5770 | { | |
393e573f | 5771 | if (sRef_isSomewhatMeaningful (s)) |
616915dd | 5772 | { |
5773 | sRefSet ret; | |
616915dd | 5774 | |
5775 | ret = sRefSet_unionFree (aliasTable_aliasedBy (utab->aliases, s), | |
5776 | aliasTable_canAlias (utab->aliases, s)); | |
28bf4b0b | 5777 | return (ret); |
616915dd | 5778 | } |
5779 | else | |
5780 | { | |
28bf4b0b | 5781 | DPRINTF (("NOT A MEANINGFUL SREF!")); |
616915dd | 5782 | return sRefSet_undefined; |
5783 | } | |
5784 | } | |
5785 | ||
5786 | /*@only@*/ sRefSet usymtab_canAlias (sRef s) | |
28bf4b0b | 5787 | /*@globals utab@*/ |
616915dd | 5788 | { |
393e573f | 5789 | if (sRef_isSomewhatMeaningful (s)) |
616915dd | 5790 | { |
5791 | sRefSet res = aliasTable_canAlias (utab->aliases, s); | |
616915dd | 5792 | return res; |
5793 | } | |
28bf4b0b | 5794 | |
616915dd | 5795 | return sRefSet_undefined; |
5796 | } | |
5797 | ||
5798 | /*@only@*/ sRefSet usymtab_aliasedBy (sRef s) | |
28bf4b0b | 5799 | /*@globals utab@*/ |
616915dd | 5800 | { |
5801 | return (aliasTable_aliasedBy (utab->aliases, s)); | |
5802 | } | |
5803 | ||
5804 | /*@only@*/ cstring usymtab_unparseAliases () | |
5805 | /*@globals utab@*/ | |
5806 | { | |
5807 | return (aliasTable_unparse (utab->aliases)); | |
5808 | } | |
5809 | ||
5810 | /* | |
5811 | ** Debugging routines: | |
5812 | ** okay to leak storage here, only for debugging | |
5813 | */ | |
5814 | ||
5815 | /*@-mustfree@*/ | |
5816 | ||
5817 | void | |
5818 | usymtab_printOut (void) | |
5819 | /*@globals utab@*/ | |
5820 | { | |
5821 | int i; | |
5822 | usymtab s = utab; | |
5823 | int depth = 0; | |
5824 | char *ind = mstring_copy (" "); | |
5825 | ||
80489f0a | 5826 | fprintf (g_warningstream, "<<< [symbol table] >>>\n"); |
616915dd | 5827 | |
5828 | while (s != GLOBAL_ENV && s->env != GLOBAL_ENV) | |
5829 | { | |
5830 | cstring tname = usymtab_typeName (s); | |
5831 | ||
5832 | if (depth < 5) | |
5833 | { | |
5834 | ind[depth * 3 + 1] = '\0'; | |
5835 | } | |
5836 | ||
80489f0a | 5837 | fprintf (g_warningstream, "level: %d (%s)\n", s->lexlevel, |
616915dd | 5838 | cstring_toCharsSafe (tname)); |
5839 | ||
5840 | cstring_free (tname); | |
5841 | ||
5842 | for (i = 0; i < s->nentries; i++) | |
5843 | { | |
5844 | cstring us = uentry_unparseFull (s->entries[i]); | |
80489f0a | 5845 | fprintf (g_warningstream, "%s\n", cstring_toCharsSafe (us)); |
616915dd | 5846 | cstring_free (us); |
5847 | } | |
5848 | ||
5849 | if (s->reftable != NULL && s->nentries > 0) | |
5850 | { | |
80489f0a | 5851 | fprintf (g_warningstream, "\t<< Ref table >>\n"); |
616915dd | 5852 | |
5853 | for (i = 0; i < s->nentries; i++) | |
5854 | { | |
80489f0a | 5855 | fprintf (g_warningstream, "\t%s %3d: %d, %d\n", ind, i, |
616915dd | 5856 | s->reftable[i]->level, |
5857 | s->reftable[i]->index); | |
5858 | } | |
5859 | } | |
5860 | ||
5861 | ind[depth * 3 + 1] = ' '; | |
5862 | depth++; | |
5863 | s = s->env; | |
5864 | } | |
80489f0a | 5865 | fprintf (g_warningstream, "<<< end usymtab >>>\n"); |
616915dd | 5866 | mstring_free (ind); |
5867 | return; | |
5868 | } | |
5869 | ||
5870 | void | |
5871 | usymtab_printTypes () | |
5872 | /*@globals globtab@*/ | |
5873 | { | |
5874 | usymtab_printAllAux (globtab); | |
5875 | } | |
5876 | ||
5877 | void | |
5878 | usymtab_printAll (void) | |
5879 | /*@globals utab@*/ | |
5880 | { | |
5881 | usymtab_printAllAux (utab); | |
5882 | } | |
5883 | ||
5884 | static void | |
5885 | usymtab_printAllAux (usymtab s) | |
80489f0a | 5886 | /*@modifies g_warningstream@*/ |
616915dd | 5887 | { |
5888 | int i; | |
5889 | int depth = 0; | |
5890 | char *ind = mstring_copy (" "); | |
5891 | ||
5892 | printf ("[[[ usymtab ]]]"); | |
5893 | ||
5894 | while (s != GLOBAL_ENV) | |
5895 | { | |
5896 | if (depth < 5) | |
5897 | ind[depth * 3 + 1] = '\0'; | |
5898 | ||
5899 | if (s->env == GLOBAL_ENV) | |
5900 | { | |
5901 | int looplow; | |
5902 | ||
5903 | printf ("level: %d / break: %s / exit: %s\n", s->lexlevel, | |
5904 | cstring_toCharsSafe (bool_unparse (s->mustBreak)), | |
5905 | cstring_toCharsSafe (exitkind_unparse (s->exitCode))); | |
5906 | ||
5907 | looplow = 0; | |
5908 | ||
5909 | for (i = looplow; i < s->nentries; i++) | |
5910 | { | |
5911 | printf ("%s%3d. %s\n", ind, i, | |
5912 | cstring_toCharsSafe (uentry_unparseFull (s->entries[i]))); | |
5913 | } | |
5914 | } | |
5915 | else | |
5916 | { | |
5917 | printf ("level: %d / break: %s / exit: %s\n", s->lexlevel, | |
5918 | cstring_toCharsSafe (bool_unparse (s->mustBreak)), | |
5919 | cstring_toCharsSafe (exitkind_unparse (s->exitCode))); | |
5920 | ||
5921 | for (i = 0; i < s->nentries; i++) | |
5922 | { | |
5923 | printf ("%s%3d %s\n", ind, i, | |
5924 | cstring_toCharsSafe (uentry_unparseFull (s->entries[i]))); | |
5925 | } | |
5926 | } | |
5927 | ||
5928 | ind[depth * 3 + 1] = ' '; | |
5929 | depth++; | |
5930 | s = s->env; | |
5931 | } | |
5932 | printf ("----------\n"); | |
5933 | } | |
5934 | ||
5935 | void | |
5936 | usymtab_printComplete () | |
5937 | /*@globals utab@*/ | |
5938 | { | |
5939 | int i; | |
5940 | int depth = 0; | |
5941 | char *ind = mstring_copy (" "); | |
5942 | usymtab s = utab; | |
5943 | ||
5944 | while (s != GLOBAL_ENV) | |
5945 | { | |
5946 | if (depth < 5) | |
5947 | { | |
5948 | ind[depth * 3 + 1] = '\0'; | |
5949 | } | |
5950 | ||
5951 | if (s->env == GLOBAL_ENV) | |
5952 | { | |
5953 | int looplow; | |
5954 | ||
5955 | printf ("level: %d\n", s->lexlevel); | |
5956 | ||
5957 | looplow = 0; | |
5958 | ||
5959 | for (i = looplow; i < s->nentries; i++) | |
5960 | { | |
5961 | printf ("%s%3d %s\n", ind, i, | |
02b84d4b | 5962 | cstring_toCharsSafe (uentry_unparseFull (s->entries[i]))); |
616915dd | 5963 | } |
5964 | } | |
5965 | else | |
5966 | { | |
5967 | printf ("level: %d\n", s->lexlevel); | |
5968 | for (i = 0; i < s->nentries; i++) | |
5969 | { | |
5970 | printf ("%s%3d %s\n", ind, i, | |
02b84d4b | 5971 | cstring_toCharsSafe (uentry_unparseFull (s->entries[i]))); |
616915dd | 5972 | } |
5973 | } | |
5974 | ||
5975 | ind[depth * 3 + 1] = ' '; | |
5976 | depth++; | |
5977 | s = s->env; | |
5978 | } | |
5979 | ||
5980 | printf ("----------\n"); | |
5981 | mstring_free (ind); | |
5982 | } | |
5983 | ||
3e3ec469 | 5984 | # ifdef S_SPLINT_S |
616915dd | 5985 | static /*@only@*/ cstring /*@unused@*/ |
5986 | usymtab_unparseLocalAux (/*@notnull@*/ usymtab s) | |
5987 | { | |
5988 | cstring c = message ("lexlevel: %d\n", s->lexlevel); | |
5989 | int i; | |
5990 | ||
5991 | for (i = 0; i < s->nentries; i++) | |
5992 | { | |
5993 | c = message ("%q\n%q", c, uentry_unparseFull (s->entries[i])); | |
5994 | } | |
5995 | ||
5996 | c = message ("%q\n=========", c); | |
5997 | return (c); | |
5998 | } | |
5999 | ||
6000 | static cstring /*@unused@*/ /*@only@*/ | |
6001 | usymtab_unparseLocalList (/*@notnull@*/ usymtab s) | |
6002 | { | |
6003 | cstring c = message ("[%d/%s/%s] ", s->lexlevel, | |
6004 | bool_unparse (s->mustBreak), | |
6005 | exitkind_unparse (s->exitCode)); | |
6006 | int i; | |
6007 | ||
6008 | for (i = 0; i < s->nentries; i++) | |
6009 | { | |
6010 | sRef sr = uentry_getSref (s->entries[i]); | |
6011 | ||
6012 | if (i == 0) | |
6013 | { | |
6014 | c = message ("%q: %q [%b]", c, uentry_getName (s->entries[i]), | |
6015 | sRef_isStateDefined (sr)); | |
6016 | } | |
6017 | else | |
6018 | { | |
6019 | c = message ("%q, %q [%b]", c, uentry_getName (s->entries[i]), | |
6020 | sRef_isStateDefined (sr)); | |
6021 | } | |
6022 | ||
6023 | } | |
6024 | ||
6025 | return (c); | |
6026 | } | |
8250fa4a | 6027 | # endif |
616915dd | 6028 | |
6029 | void | |
6030 | usymtab_printLocal (void) | |
6031 | /*@globals utab@*/ | |
6032 | { | |
6033 | int i; | |
6034 | usymtab s = utab; | |
6035 | ||
6036 | printf ("lexlevel: %d\n", s->lexlevel); | |
6037 | ||
6038 | for (i = 0; i < s->nentries; i++) | |
6039 | { | |
6040 | printf ("%s\n", cstring_toCharsSafe (uentry_unparseFull (s->entries[i]))); | |
6041 | } | |
6042 | ||
6043 | while (s->lexlevel > 1) | |
6044 | { | |
6045 | s = s->env; | |
6046 | } | |
6047 | ||
6048 | llassert (usymtab_isDefined (s)); | |
6049 | ||
6050 | printf ("Params:\n"); | |
6051 | ||
6052 | for (i = 0; i < s->nentries; i++) | |
6053 | { | |
6054 | printf ("%d: %s\n", i, | |
6055 | cstring_toCharsSafe (uentry_unparseFull (s->entries[i]))); | |
6056 | } | |
6057 | } | |
6058 | /*@=mustfree@*/ | |
6059 | ||
6060 | static bool checkDistinctExternalName (uentry e) | |
6061 | /*@globals globtab@*/ | |
80489f0a | 6062 | /*@modifies *g_warningstream@*/ |
616915dd | 6063 | { |
abd7f895 | 6064 | size_t checklen = size_fromInt (context_getValue (FLG_EXTERNALNAMELEN)); |
616915dd | 6065 | bool ignorecase = context_getFlag (FLG_EXTERNALNAMECASEINSENSITIVE); |
6066 | bool gotone = FALSE; | |
6067 | bool extras = FALSE; | |
6068 | bool hasError = FALSE; | |
6069 | cstring name = uentry_rawName (e); | |
6070 | usymtab st = globtab; | |
6071 | ||
6072 | if (checklen == 0) | |
6073 | { | |
6074 | ; | |
6075 | } | |
6076 | else | |
6077 | { | |
6078 | if (uentry_isAnyTag (e)) | |
6079 | { | |
6080 | checklen++; /* the tag marker doesn't count */ | |
6081 | } | |
6082 | } | |
6083 | ||
6084 | usymtab_entries (st, oe) | |
6085 | { | |
6086 | if (uentry_sameObject (oe, e)) | |
6087 | { | |
6088 | continue; | |
6089 | } | |
6090 | ||
6091 | if (checklen == 0) | |
6092 | { | |
6093 | if (cstring_equalCaseInsensitive (uentry_rawName (oe), name)) | |
6094 | { | |
6095 | if (gotone) | |
6096 | { | |
6097 | extras = TRUE; | |
6098 | break; | |
6099 | } | |
6100 | ||
6101 | if (optgenerror | |
6102 | (FLG_DISTINCTEXTERNALNAMES, | |
6103 | message | |
6104 | ("External identifier %q is not distinguishable from %q " | |
6105 | "because alphabetical case is ignored", | |
6106 | uentry_getName (e), | |
6107 | uentry_getName (oe)), | |
6108 | uentry_whereLast (e))) | |
6109 | { | |
6110 | uentry_showWhereAny (oe); | |
6111 | uentry_setHasNameError (oe); | |
6112 | gotone = TRUE; | |
6113 | } | |
6114 | } | |
6115 | } | |
6116 | else | |
6117 | { | |
6118 | if (ignorecase) | |
6119 | { | |
6120 | if (cstring_equalLenCaseInsensitive (uentry_rawName (oe), | |
6121 | name, checklen)) | |
6122 | { | |
6123 | if (gotone) | |
6124 | { | |
6125 | extras = TRUE; | |
6126 | break; | |
6127 | } | |
6128 | ||
6129 | if (cstring_equalLen (uentry_rawName (oe), name, checklen)) | |
6130 | { | |
6131 | if (optgenerror | |
6132 | (FLG_DISTINCTEXTERNALNAMES, | |
6133 | /*@-sefparams@*/ | |
6134 | message | |
6135 | ("External identifier %q is not distinguishable from %q " | |
6136 | "in the first %d characters (%q)", | |
6137 | uentry_getName (e), | |
6138 | uentry_getName (oe), | |
abd7f895 | 6139 | size_toInt (checklen), |
616915dd | 6140 | cstring_clip (uentry_getName (e), checklen)), |
6141 | /*@=sefparams@*/ | |
6142 | uentry_whereLast (e))) | |
6143 | { | |
6144 | uentry_showWhereAny (oe); | |
6145 | uentry_setHasNameError (oe); | |
6146 | gotone = TRUE; | |
6147 | } | |
6148 | } | |
6149 | else | |
6150 | { | |
6151 | if (gotone) | |
6152 | { | |
6153 | extras = TRUE; | |
6154 | break; | |
6155 | } | |
6156 | ||
6157 | if (optgenerror | |
6158 | (FLG_DISTINCTEXTERNALNAMES, | |
6159 | message | |
6160 | ("External identifier %q is not distinguishable from %q " | |
6161 | "in the first %d characters because alphabetical case " | |
6162 | "is ignored", | |
6163 | uentry_getName (e), | |
6164 | uentry_getName (oe), | |
abd7f895 | 6165 | size_toInt (checklen)), |
616915dd | 6166 | uentry_whereLast (e))) |
6167 | { | |
6168 | uentry_showWhereAny (oe); | |
6169 | uentry_setHasNameError (oe); | |
6170 | gotone = TRUE; | |
6171 | } | |
6172 | } | |
6173 | } | |
6174 | } | |
6175 | else if (cstring_equalLen (uentry_rawName (oe), name, checklen)) | |
6176 | { | |
6177 | if (gotone) | |
6178 | { | |
6179 | extras = TRUE; | |
6180 | break; | |
6181 | } | |
6182 | ||
6183 | if (optgenerror | |
6184 | (FLG_DISTINCTEXTERNALNAMES, | |
6185 | /*@-sefparams@*/ | |
6186 | message | |
6187 | ("External identifier %q is not distinguishable from %q " | |
6188 | "in the first %d characters (%q)", | |
6189 | uentry_getName (e), | |
6190 | uentry_getName (oe), | |
abd7f895 | 6191 | size_toInt (checklen), |
616915dd | 6192 | cstring_clip (uentry_getName (e), checklen)), |
6193 | /*@=sefparams@*/ | |
6194 | uentry_whereLast (e))) | |
6195 | { | |
6196 | uentry_showWhereAny (oe); | |
6197 | uentry_setHasNameError (oe); | |
6198 | gotone = TRUE; | |
6199 | } | |
6200 | } | |
6201 | else | |
6202 | { | |
6203 | ; /* okay */ | |
6204 | } | |
6205 | } | |
6206 | } end_usymtab_entries ; | |
6207 | ||
6208 | hasError = gotone; | |
6209 | ||
6210 | if (extras) | |
6211 | { | |
6212 | llgenindentmsgnoloc | |
6213 | (cstring_makeLiteral ("One or more additional " | |
6214 | "indistinguishable external " | |
6215 | "names not reported")); | |
6216 | } | |
6217 | ||
6218 | return hasError; | |
6219 | } | |
6220 | ||
6221 | static bool checkDistinctInternalName (uentry e) | |
6222 | /*@globals utab@*/ | |
80489f0a | 6223 | /*@modifies *g_warningstream@*/ |
616915dd | 6224 | { |
6225 | usymtab ttab = utab; | |
6226 | cstring name = uentry_rawName (e); | |
abd7f895 | 6227 | size_t numchars = size_fromInt (context_getValue (FLG_INTERNALNAMELEN)); |
616915dd | 6228 | bool caseinsensitive = context_getFlag (FLG_INTERNALNAMECASEINSENSITIVE); |
6229 | bool lookalike = context_getFlag (FLG_INTERNALNAMELOOKALIKE); | |
6230 | ||
6231 | if (uentry_isAnyTag (e) && (numchars != 0)) | |
6232 | { | |
6233 | numchars++; /* the tag marker doesn't count */ | |
6234 | } | |
6235 | ||
6236 | while (usymtab_isDefined (ttab)) | |
6237 | { | |
6238 | usymtab_entries (ttab, oe) | |
6239 | { | |
6240 | if (uentry_sameObject (oe, e)) | |
6241 | { | |
6242 | /*@innercontinue@*/ continue; | |
6243 | } | |
6244 | ||
6245 | switch (cstring_genericEqual | |
6246 | (name, uentry_rawName (oe), | |
6247 | numchars, caseinsensitive, lookalike)) | |
6248 | { | |
6249 | case CGE_DISTINCT: /* okay */ | |
6250 | /*@switchbreak@*/ | |
6251 | break; | |
6252 | case CGE_SAME: | |
6253 | if (cstring_equal (name, uentry_rawName (oe))) | |
6254 | { | |
6255 | ; /* got a shadow error */ | |
6256 | } | |
6257 | else | |
6258 | { | |
6259 | if (optgenerror | |
6260 | (FLG_DISTINCTINTERNALNAMES, | |
6261 | /*@-sefparams@*/ | |
6262 | message | |
6263 | ("Internal identifier %q is not distinguishable from %q " | |
6264 | "in the first %d characters (%q)", | |
6265 | uentry_getName (e), | |
6266 | uentry_getName (oe), | |
abd7f895 | 6267 | size_toInt (numchars), |
616915dd | 6268 | cstring_clip (uentry_getName (e), numchars)), |
6269 | /*@=sefparams@*/ | |
6270 | uentry_whereLast (e))) | |
6271 | { | |
6272 | uentry_showWhereAny (oe); | |
6273 | uentry_setHasNameError (oe); | |
6274 | return TRUE; | |
6275 | } | |
6276 | } | |
6277 | /*@switchbreak@*/ | |
6278 | break; | |
6279 | case CGE_CASE: | |
abd7f895 | 6280 | if (numchars == 0 || (cstring_length (name) <= numchars)) |
616915dd | 6281 | { |
6282 | if (optgenerror | |
6283 | (FLG_DISTINCTINTERNALNAMES, | |
6284 | message | |
6285 | ("Internal identifier %q is not distinguishable from %q " | |
6286 | "without case sensitivity", | |
6287 | uentry_getName (e), | |
6288 | uentry_getName (oe)), | |
6289 | uentry_whereLast (e))) | |
6290 | { | |
6291 | uentry_showWhereAny (oe); | |
6292 | uentry_setHasNameError (oe); | |
6293 | return TRUE; | |
6294 | } | |
6295 | } | |
6296 | else | |
6297 | { | |
6298 | if (optgenerror | |
6299 | (FLG_DISTINCTINTERNALNAMES, | |
6300 | message | |
6301 | ("Internal identifier %q is not distinguishable from %q " | |
6302 | "in the first %d characters without case sensitivity", | |
6303 | uentry_getName (e), | |
6304 | uentry_getName (oe), | |
abd7f895 | 6305 | size_toInt (numchars)), |
616915dd | 6306 | uentry_whereLast (e))) |
6307 | { | |
6308 | uentry_showWhereAny (oe); | |
6309 | uentry_setHasNameError (oe); | |
6310 | return TRUE; | |
6311 | } | |
6312 | } | |
6313 | /*@switchbreak@*/ | |
6314 | break; | |
6315 | case CGE_LOOKALIKE: | |
6316 | if (numchars == 0 | |
6317 | || (cstring_length (name) <= numchars)) | |
6318 | { | |
6319 | if (optgenerror | |
6320 | (FLG_DISTINCTINTERNALNAMES, | |
6321 | message | |
6322 | ("Internal identifier %q is not distinguishable from %q " | |
6323 | "except by lookalike characters", | |
6324 | uentry_getName (e), | |
6325 | uentry_getName (oe)), | |
6326 | uentry_whereLast (e))) | |
6327 | { | |
6328 | uentry_showWhereAny (oe); | |
6329 | uentry_setHasNameError (oe); | |
6330 | return TRUE; | |
6331 | } | |
6332 | } | |
6333 | else | |
6334 | { | |
6335 | if (optgenerror | |
6336 | (FLG_DISTINCTINTERNALNAMES, | |
6337 | message | |
6338 | ("Internal identifier %q is not distinguishable from %q " | |
6339 | "in the first %d characters except by lookalike characters", | |
6340 | uentry_getName (e), | |
6341 | uentry_getName (oe), | |
abd7f895 | 6342 | size_toInt (numchars)), |
616915dd | 6343 | uentry_whereLast (e))) |
6344 | { | |
6345 | uentry_showWhereAny (oe); | |
6346 | uentry_setHasNameError (oe); | |
6347 | return TRUE; | |
6348 | } | |
6349 | } | |
6350 | } | |
6351 | } end_usymtab_entries ; | |
6352 | ||
6353 | ttab = ttab->env; | |
6354 | } | |
6355 | ||
6356 | return FALSE; | |
6357 | } | |
6358 | ||
6359 | void usymtab_checkDistinctName (uentry e, int scope) | |
6360 | /*@globals utab, globtab@*/ | |
6361 | { | |
6362 | bool hasError = FALSE; | |
6363 | fileloc where = uentry_whereLast (e); | |
6364 | ||
6365 | if (!fileloc_isPreproc (where) && !fileloc_isBuiltin (where)) | |
6366 | { | |
6367 | if (scope == globScope) | |
6368 | { | |
6369 | if (context_getFlag (FLG_DISTINCTEXTERNALNAMES)) | |
6370 | { | |
6371 | hasError = checkDistinctExternalName (e); | |
6372 | } | |
6373 | } | |
6374 | ||
6375 | if (!hasError && context_getFlag (FLG_DISTINCTINTERNALNAMES)) | |
6376 | { | |
6377 | hasError = checkDistinctInternalName (e); | |
6378 | } | |
6379 | } | |
6380 | ||
6381 | if (hasError) | |
6382 | { | |
28bf4b0b | 6383 | uentry_setHasNameError (e); |
616915dd | 6384 | } |
6385 | } | |
6386 | ||
28bf4b0b | 6387 | /*@exposed@*/ sRef usymtab_lookupGlobalMarker (void) /*@globals utab@*/ |
6388 | { | |
6389 | uentry ue; | |
6390 | ||
6391 | ue = usymtab_lookupAux (utab, GLOBAL_MARKER_NAME); | |
6392 | llassert (uentry_isValid (ue)); | |
6393 | ||
6394 | return uentry_getSref (ue); | |
6395 | } | |
6396 | ||
6483a926 | 6397 | |
6398 | # ifdef DEBUGSPLINT | |
6399 | /* | |
6400 | ** For debugging only | |
6401 | */ | |
6402 | ||
6403 | void | |
6404 | usymtab_checkAllValid () /*@globals utab@*/ | |
6405 | { | |
6406 | usymtab tab = utab; | |
6407 | ||
6408 | while (tab != GLOBAL_ENV) | |
6409 | { | |
6410 | int i; | |
6411 | ||
6412 | for (i = 0; i < utab->nentries; i++) | |
6413 | { | |
6414 | uentry e = utab->entries[i]; | |
6415 | ||
6416 | uentry_checkValid (e); | |
6417 | } | |
6418 | ||
6419 | aliasTable_checkValid (tab->aliases); | |
6420 | tab = tab->env; | |
6421 | } | |
6422 | } | |
6423 | # endif | |
6424 | ||
6425 | ||
6426 | ||
6427 | ||
6428 | ||
6429 |