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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@*/ ; |
b73d1009 | 156 | |
157 | /*@function bool usymtab_indexFound (usymId) @*/ | |
158 | # define usymtab_indexFound(u) ((u) != usymId_notfound) | |
159 | ||
160 | static usymId usymtab_getIndex (/*@notnull@*/ usymtab p_s, cstring p_k); | |
161 | static /*@exposed@*/ uentry usymtab_fetchIndex (/*@notnull@*/ usymtab p_s, usymId p_ui); | |
162 | static /*@exposed@*/ uentry usymtab_lookupAux (usymtab p_s, cstring p_k); | |
163 | ||
164 | static /*@exposed@*/ /*@dependent@*/ /*@notnull@*/ | |
165 | usymtab usymtab_getFileTab (void) /*@globals filetab@*/ ; | |
166 | ||
167 | static int refTable_lookup (/*@notnull@*/ usymtab p_ut, int p_level, usymId p_index); | |
616915dd | 168 | static bool usymtab_mustBreak (usymtab p_s); |
169 | static bool usymtab_mustEscape (usymtab p_s); | |
170 | ||
171 | static void recordFunctionType (uentry ue) | |
172 | { | |
7ebcc5bb | 173 | llassert (uentry_isDatatype (ue) || uentry_isAnyTag (ue) |
616915dd | 174 | || uentry_isEnumConstant (ue)); |
7ebcc5bb | 175 | DPRINTF (("Function type: %s", uentry_unparseFull (ue))); |
616915dd | 176 | /*@-temptrans@*/ |
177 | functypes = uentryList_add (functypes, ue); | |
178 | /*@=temptrans@*/ | |
179 | } | |
180 | ||
181 | static void clearFunctionTypes (void) | |
182 | /*@modifies globtab@*/ | |
183 | { | |
184 | uentryList_elements (functypes, el) | |
185 | { | |
186 | if (cstring_isDefined (uentry_rawName (el))) | |
187 | { | |
28bf4b0b | 188 | if (cstringTable_isDefined (globtab->htable)) |
616915dd | 189 | { |
28bf4b0b | 190 | cstringTable_remove (globtab->htable, uentry_rawName (el)); |
616915dd | 191 | } |
192 | ||
193 | uentry_setName (el, cstring_undefined); | |
194 | } | |
195 | ||
196 | /*@access uentry@*/ | |
197 | llassert (uentry_isValid (el)); | |
198 | el->sref = sRef_undefined; | |
199 | /*@noaccess uentry@*/ | |
200 | } end_uentryList_elements ; | |
201 | ||
202 | uentryList_clear (functypes); | |
203 | } | |
204 | ||
0e41eb0e | 205 | static /*@falsewhennull@*/ bool usymtab_isBranch (usymtab u) |
616915dd | 206 | { |
207 | return (usymtab_isDefined (u) && | |
208 | (u->kind == US_TBRANCH || u->kind == US_FBRANCH | |
209 | || u->kind == US_CBRANCH || u->kind == US_SWITCH)); | |
210 | } | |
211 | ||
212 | static bool usymtab_mustBreak (usymtab s) | |
213 | { | |
214 | llassert (s != GLOBAL_ENV); | |
215 | return (s->mustBreak); | |
216 | } | |
217 | ||
218 | static bool usymtab_mustEscape (usymtab s) | |
219 | { | |
220 | llassert (s != GLOBAL_ENV); | |
221 | return (exitkind_mustEscape (s->exitCode)); | |
222 | } | |
223 | ||
224 | void usymtab_setMustBreak () | |
225 | /*@modifies utab@*/ | |
226 | { | |
227 | llassert (utab != GLOBAL_ENV); | |
228 | utab->mustBreak = TRUE; | |
229 | } | |
230 | ||
231 | void usymtab_setExitCode (exitkind ex) | |
232 | /*@modifies utab@*/ | |
233 | { | |
234 | llassert (utab != GLOBAL_ENV); | |
235 | ||
236 | utab->exitCode = ex; | |
237 | ||
238 | if (exitkind_mustEscape (ex)) | |
239 | { | |
240 | utab->mustBreak = TRUE; | |
241 | } | |
242 | } | |
243 | ||
28bf4b0b | 244 | bool usymtab_isAltDefinitelyNullDeep (sRef s) |
616915dd | 245 | { |
28bf4b0b | 246 | return (sRef_deepPred (usymtab_isAltDefinitelyNull, s)); |
616915dd | 247 | } |
248 | ||
28bf4b0b | 249 | static bool usymtab_isAltDefinitelyNull (sRef s) |
616915dd | 250 | /*@globals utab@*/ |
251 | { | |
252 | guardSet t; | |
253 | bool res; | |
254 | ||
255 | t = utab->guards; | |
256 | ||
257 | llassert (utab->env != NULL); | |
258 | ||
259 | /*@-mods@*/ /* These modifications are cancelled. */ | |
260 | utab->guards = utab->env->guards; | |
261 | utab->env->guards = t; | |
262 | /*@=mods@*/ | |
263 | ||
264 | llassert (usymtab_isDefined (utab)); | |
28bf4b0b | 265 | res = usymtab_isDefinitelyNull (s); |
616915dd | 266 | |
267 | /* | |
268 | ** This reports a spurious error. It is okay, because of | |
269 | ** the nesting relationship of usymtab environments. | |
270 | */ | |
271 | ||
272 | /*@-mods@*/ /* Cancelling modifications. */ | |
273 | /*@i1@*/ utab->env->guards = utab->guards; | |
274 | /*@i1@*/ utab->guards = t; | |
275 | /*@=mods@*/ | |
276 | ||
277 | return res; | |
278 | } | |
279 | ||
280 | static /*@notnull@*/ /*@special@*/ usymtab | |
281 | usymtab_create (uskind kind, /*@keep@*/ usymtab env, bool nextlevel) | |
282 | /*@defines result@*/ | |
283 | /*@post:isnull result->htable, result->guards, result->aliases@*/ | |
284 | { | |
285 | usymtab t = (usymtab) dmalloc (sizeof (*t)); | |
286 | ||
287 | t->nentries = 0; | |
288 | t->nspace = CBASESIZE; | |
289 | t->entries = (uentry *) dmalloc (sizeof (*t->entries) * CBASESIZE); | |
28bf4b0b | 290 | |
291 | /* We only use a reftable for branch-level symbol tables. | |
292 | */ | |
293 | ||
616915dd | 294 | t->reftable = (nextlevel |
295 | ? NULL | |
296 | : (refentry *) dmalloc (sizeof (*t->reftable) * CBASESIZE)); | |
297 | ||
298 | t->kind = kind; | |
299 | t->lexlevel = (env == GLOBAL_ENV ? 0 : env->lexlevel) + (nextlevel ? 1 : 0); | |
28bf4b0b | 300 | |
616915dd | 301 | t->env = env; |
302 | t->htable = NULL; | |
303 | ||
304 | t->guards = guardSet_undefined; | |
305 | t->aliases = aliasTable_undefined; | |
306 | ||
28bf4b0b | 307 | t->mustBreak = FALSE; |
616915dd | 308 | t->exitCode = XK_NEVERESCAPE; |
6fcd0b1e | 309 | |
310 | DPRINTF (("Create usymtab [%p]", t)); | |
616915dd | 311 | return t; |
312 | } | |
313 | ||
314 | /* | |
315 | ** constructors | |
316 | */ | |
317 | ||
318 | static /*@only@*/ /*@notnull@*/ usymtab | |
319 | usymtab_createRoot (void) /*@modifies nothing@*/ | |
320 | { | |
321 | usymtab u = (usymtab) dmalloc (sizeof (*u)); | |
322 | ||
323 | u->nentries = 0; | |
324 | u->nspace = CGLOBBASESIZE; | |
325 | u->entries = (uentry *) dmalloc (sizeof (*u->entries) * CGLOBBASESIZE); | |
326 | u->env = GLOBAL_ENV; | |
327 | u->lexlevel = 0; | |
28bf4b0b | 328 | u->htable = cstringTable_create (CGLOBHASHSIZE); |
616915dd | 329 | u->reftable = NULL; |
28bf4b0b | 330 | |
616915dd | 331 | u->guards = guardSet_new (); |
332 | u->aliases = aliasTable_new (); | |
333 | ||
334 | u->mustBreak = FALSE; | |
335 | u->exitCode = XK_NEVERESCAPE; | |
336 | u->kind = US_NORMAL; | |
337 | ||
28bf4b0b | 338 | return (u); |
616915dd | 339 | } |
340 | ||
341 | void | |
342 | usymtab_initMod (void) | |
343 | /*@globals undef utab, undef oldtab, undef globtab, undef filetab @*/ | |
344 | /*@modifies utab, globtab, filetab, oldtab @*/ | |
345 | { | |
346 | utab = usymtab_createRoot (); | |
347 | globtab = utab; | |
348 | filetab = usymtab_undefined; | |
349 | oldtab = usymtab_undefined; | |
350 | } | |
351 | ||
6fcd0b1e | 352 | void |
353 | usymtab_destroyMod (void) /*@modifies utab, globtab, filetab@*/ /*@globals killed utab@*/ | |
354 | { | |
355 | DPRINTF (("Destroy usymtab [%p]: %d", utab, utab->nentries)); | |
356 | usymtab_freeAux (utab); | |
357 | utab = usymtab_undefined; | |
53306cab | 358 | /*@-globstate@*/ |
359 | } /*@=globstate@*/ | |
28bf4b0b | 360 | |
361 | void | |
362 | usymtab_initGlobalMarker () /*@globals globtab@*/ | |
363 | { | |
364 | if (uentry_isValid (usymtab_lookupAux (globtab, GLOBAL_MARKER_NAME))) | |
365 | { | |
366 | ; /* Already entered from load table. */ | |
367 | } | |
368 | else | |
369 | { | |
370 | usymtab_addGlobalEntry (uentry_makeGlobalMarker ()); | |
371 | } | |
372 | } | |
373 | ||
616915dd | 374 | /* |
375 | ** utab should be empty? (requires?) | |
376 | ** | |
377 | ** Adds bool types to symbol table (these are built in for now) | |
378 | ** Only do this is there is no library! | |
379 | */ | |
380 | ||
381 | void | |
382 | usymtab_initBool () | |
383 | { | |
2cecdaff | 384 | DPRINTF (("Init bool!")); |
385 | ||
616915dd | 386 | if (context_getFlag (FLG_NOLIB)) |
387 | { | |
388 | ctype boolt = ctype_bool; | |
389 | /* evs 2000-07-24: bool is now treated as abstract (always) */ | |
390 | ||
e5081f8c | 391 | uentry boolentry = uentry_makeBoolDatatype (qual_createAbstract ()); |
616915dd | 392 | usymtab_supGlobalEntry (boolentry); |
393 | context_addBoolAccess (); | |
394 | ||
395 | /* | |
396 | ** We supply values 0 and 1 for the constants, so things like | |
397 | ** while (TRUE) can be interpreted correctly. | |
398 | */ | |
399 | ||
400 | usymtab_supGlobalEntry | |
5e211f69 | 401 | (uentry_makeConstantValue (context_getFalseName (), boolt, |
402 | fileloc_getBuiltin (), FALSE, | |
403 | multiVal_makeInt (0))); | |
3e3ec469 | 404 | |
616915dd | 405 | usymtab_supGlobalEntry |
5e211f69 | 406 | (uentry_makeConstantValue (context_getTrueName (), boolt, |
407 | fileloc_getBuiltin (), FALSE, | |
408 | multiVal_makeInt (1))); | |
616915dd | 409 | } |
410 | } | |
411 | ||
412 | /* | |
413 | ** mutators | |
414 | */ | |
415 | ||
416 | static void | |
417 | usymtab_grow (/*@notnull@*/ usymtab s) | |
418 | { | |
419 | int i; | |
420 | o_uentry *oldsyms = s->entries; | |
421 | ||
422 | s->nspace = CBASESIZE; | |
423 | s->entries = (uentry *) dmalloc (sizeof (*s->entries) | |
424 | * (s->nentries + s->nspace)); | |
425 | ||
426 | for (i = 0; i < s->nentries; i++) | |
427 | { | |
428 | s->entries[i] = oldsyms[i]; | |
429 | } | |
430 | ||
431 | sfree (oldsyms); | |
432 | ||
433 | if (s->reftable != NULL) | |
434 | { | |
435 | refTable oldRefs = s->reftable; | |
436 | ||
437 | s->reftable = (refentry *) dmalloc (sizeof (*s->reftable) | |
438 | * (s->nentries + CBASESIZE + 1)); | |
439 | ||
440 | for (i = 0; i < s->nentries; i++) | |
441 | { | |
442 | s->reftable[i] = oldRefs[i]; | |
443 | } | |
444 | ||
445 | /*@-compdestroy@*/ | |
446 | sfree (oldRefs); | |
447 | /*@=compdestroy@*/ | |
448 | } | |
449 | ||
450 | } | |
451 | ||
452 | static void | |
453 | usymtab_addEntryQuiet (/*@notnull@*/ usymtab s, /*@keep@*/ uentry e) | |
454 | { | |
455 | if (!(s->lexlevel > fileScope || !sRef_modInFunction ())) | |
456 | { | |
457 | if (uentry_isDatatype (e) | |
458 | || uentry_isFunction (e) | |
459 | || uentry_isAnyTag (e) | |
460 | || uentry_isEnumConstant (e) | |
461 | || context_inMacro ()) | |
462 | { | |
463 | /* | |
464 | ** Not a bug. Code like, | |
465 | ** int f (void) { typedef int tint; ... } | |
466 | ** is legal. | |
467 | */ | |
468 | ||
469 | /* was nothing here! */ | |
470 | /*@i@*/ e->sref = sRef_saveCopy (e->sref); | |
471 | } | |
472 | else | |
473 | { | |
474 | llparseerror | |
475 | (cstring_makeLiteral ("Declaration outside function scope")); | |
476 | ||
477 | llcontbug (message ("usymtab_addEntryQuiet: inconsistent state " | |
478 | "(lexlevel = %d, modFunction = %s) adding: %q", | |
479 | s->lexlevel, bool_unparse (sRef_modInFunction ()), | |
480 | uentry_unparse (e))); | |
481 | sRef_setGlobalScope (); | |
482 | /* make sure the sRef is not bashed! */ | |
483 | /*@i@*/ e->sref = sRef_saveCopy (e->sref); | |
484 | } | |
485 | } | |
486 | ||
487 | if (s->nspace <= 0) | |
488 | { | |
489 | usymtab_grow (s); | |
490 | } | |
491 | ||
492 | s->nspace--; | |
493 | s->entries[s->nentries] = e; | |
494 | ||
495 | # ifdef DOANNOTS | |
496 | if (s == globtab || s == filetab) | |
497 | { | |
498 | if (!fileloc_isLib (g_currentloc)) | |
499 | { | |
500 | uentry_tallyAnnots (e, AN_UNKNOWN); | |
501 | } | |
502 | } | |
503 | # endif | |
504 | ||
28bf4b0b | 505 | if (cstringTable_isDefined (s->htable)) |
616915dd | 506 | { |
28bf4b0b | 507 | cstringTable_insert (s->htable, cstring_copy (uentry_rawName (e)), s->nentries); |
616915dd | 508 | } |
509 | ||
510 | s->nentries++; | |
511 | } | |
512 | ||
513 | static /*@observer@*/ uentry /*@alt void@*/ | |
514 | usymtab_addEntryBase (/*@notnull@*/ usymtab s, /*@only@*/ uentry e) | |
515 | { | |
516 | /* | |
517 | ** In theory, we shouldn't need this test because it this is | |
518 | ** only called when a library is being read, and it shouldn't | |
519 | ** ever have a duplicate entry. In practice, its safer to | |
520 | ** leave it in, though. | |
521 | */ | |
522 | ||
523 | uentry old; | |
524 | ||
525 | if (uentry_isValid (old = usymtab_lookupQuiet (s, uentry_rawName (e)))) | |
526 | { | |
527 | DPRINTF (("Duplicate entry: %s", uentry_unparse (e))); | |
528 | uentry_free (e); /* duplicate */ | |
529 | return old; | |
530 | } | |
531 | else | |
532 | { | |
b73d1009 | 533 | usymId thisentry = usymId_fromInt (s->nentries); |
616915dd | 534 | |
535 | if (uentry_isVar (e)) | |
536 | { | |
16c024b5 | 537 | uentry_setSref |
538 | (e, sRef_makeCvar (globScope, thisentry, | |
539 | uentry_getType (e), | |
540 | stateInfo_makeLoc (uentry_whereLast (e), SA_DECLARED))); | |
616915dd | 541 | } |
542 | ||
543 | usymtab_addEntryQuiet (s, e); | |
544 | return e; | |
545 | } | |
546 | } | |
547 | ||
28bf4b0b | 548 | |
549 | static /*@observer@*/ uentry /*@alt void@*/ | |
550 | usymtab_addEntryAlways (/*@notnull@*/ usymtab s, /*@only@*/ uentry e) | |
551 | { | |
552 | /* | |
553 | ** In theory, we shouldn't need this test because it this is | |
554 | ** only called when a library is being read, and it shouldn't | |
555 | ** ever have a duplicate entry. In practice, its safer to | |
556 | ** leave it in, though. | |
557 | */ | |
558 | ||
559 | uentry old; | |
b73d1009 | 560 | usymId thisentry = usymId_fromInt (s->nentries); |
28bf4b0b | 561 | |
562 | if (uentry_isValid (old = usymtab_lookupQuiet (s, uentry_rawName (e)))) | |
563 | { | |
564 | llcontbug | |
565 | (message ("Duplicate entry in load library: %s. " | |
566 | "Old entry: %q. New entry: %q", | |
567 | uentry_rawName (e), | |
568 | uentry_unparseFull (old), | |
569 | uentry_unparseFull (e))); | |
570 | ||
571 | uentry_setName (e, message ("__x_%s", uentry_rawName (e))); | |
572 | /* This shouldn't happen...unless the library is bad! */ | |
573 | } | |
574 | ||
575 | ||
576 | if (uentry_isVar (e) && !uentry_isGlobalMarker (e)) | |
577 | { | |
16c024b5 | 578 | uentry_setSref |
579 | (e, sRef_makeCvar (globScope, thisentry, | |
580 | uentry_getType (e), | |
581 | stateInfo_makeLoc (uentry_whereLast (e), SA_DECLARED))); | |
28bf4b0b | 582 | } |
583 | ||
584 | usymtab_addEntryQuiet (s, e); | |
585 | return e; | |
586 | } | |
587 | ||
616915dd | 588 | static usymId |
589 | usymtab_addEntryAux (/*@notnull@*/ usymtab st, /*@keep@*/ uentry e, bool isSref) | |
590 | /*@globals globtab@*/ | |
591 | /*@modifies st, e@*/ | |
592 | { | |
b73d1009 | 593 | usymId thisentry = usymId_fromInt (st->nentries); |
616915dd | 594 | |
595 | llassert (!uentry_isElipsisMarker (e)); | |
596 | ||
597 | /* | |
598 | ** not true for tags | |
599 | ** llassert (usymtab_lookupSafe (uentry_rawName (e)) == uentry_undefined); | |
600 | **/ | |
601 | ||
602 | llassertprint (uentry_isAnyTag (e) ? st == globtab : TRUE, | |
603 | ("non-global tag: %s / %d", uentry_unparseFull (e), st->lexlevel)); | |
604 | ||
605 | if (st->lexlevel == fileScope | |
606 | && (!(uentry_isStatic (e)) || uentry_isAnyTag (e))) | |
607 | { | |
608 | st = globtab; | |
609 | } | |
610 | ||
611 | if (isSref) | |
612 | { | |
613 | ctype ct = uentry_getType (e); | |
614 | ||
615 | if (uentry_isFunction (e) && ctype_isFunction (ct)) | |
616 | { | |
28bf4b0b | 617 | ct = ctype_getReturnType (ct); |
616915dd | 618 | } |
619 | ||
620 | if (uentry_isStatic (e)) | |
621 | { | |
16c024b5 | 622 | sRef sr = sRef_makeCvar (st->lexlevel, thisentry, ct, |
623 | stateInfo_makeLoc (uentry_whereLast (e), SA_DECLARED)); | |
616915dd | 624 | |
625 | if (sRef_isStack (sr) || sRef_isLocalState (sr)) | |
626 | { | |
627 | sRef_setAliasKind (sr, AK_STATIC, uentry_whereLast (e)); | |
628 | sRef_setDefined (sr, uentry_whereLast (e)); | |
629 | } | |
630 | ||
631 | uentry_setSref (e, sr); | |
632 | } | |
633 | else | |
634 | { | |
16c024b5 | 635 | uentry_setSref |
636 | (e, sRef_makeCvar (st->lexlevel, thisentry, ct, | |
637 | stateInfo_makeLoc (uentry_whereLast (e), SA_DECLARED))); | |
616915dd | 638 | } |
6970c11b | 639 | } |
616915dd | 640 | |
641 | if (uentry_isDatatype (e)) | |
642 | { | |
b73d1009 | 643 | uentry_setDatatype (e, typeId_fromUsymId (thisentry)); |
616915dd | 644 | } |
645 | ||
646 | if (uentry_isFunction (e)) | |
647 | { | |
648 | ctype ct = uentry_getType (e); | |
649 | ||
650 | if (ctype_isFunction (ct) | |
651 | && uentryList_isMissingParams (ctype_argsFunction (ct))) | |
652 | { | |
653 | if (uentry_isDeclared (e)) | |
654 | { | |
655 | voptgenerror | |
656 | (FLG_NOPARAMS, | |
657 | message ("Function %q declared without parameter list", | |
658 | uentry_getName (e)), | |
659 | uentry_whereDeclared (e)); | |
660 | } | |
661 | else | |
662 | { | |
663 | voptgenerror | |
664 | (FLG_NOPARAMS, | |
665 | message ("Function %q specified without parameter list", | |
666 | uentry_getName (e)), | |
667 | uentry_whereSpecified (e)); | |
668 | } | |
669 | } | |
670 | } | |
671 | ||
672 | if (st == globtab && !uentry_isSpecified (e)) | |
673 | { | |
674 | exprChecks_checkExport (e); | |
675 | } | |
676 | ||
616915dd | 677 | uentry_checkName (e); |
678 | ||
679 | usymtab_addEntryQuiet (st, e); | |
28bf4b0b | 680 | DPRINTF (("Adding entry: [%p] %s", e, uentry_unparseFull (e))); |
616915dd | 681 | return (thisentry); |
682 | } | |
683 | ||
684 | usymId | |
685 | usymtab_addEntry (uentry e) | |
686 | /*@globals utab, globtab@*/ | |
687 | /*@modifies utab, e@*/ | |
28bf4b0b | 688 | { |
616915dd | 689 | llassertprint (!usymtab_exists (uentry_rawName (e)), |
690 | ("Entry already exists: %s", uentry_unparse (e))); | |
691 | ||
692 | return usymtab_addEntryAux (utab, e, FALSE); | |
693 | } | |
694 | ||
695 | void | |
696 | usymtab_addGlobalEntry (uentry e) | |
697 | /*@modifies globtab, e@*/ | |
698 | { | |
699 | DPRINTF (("Add global: %s / %s", uentry_unparse (e), bool_unparse (uentry_isForward (e)))); | |
700 | ||
701 | (void) usymtab_addEntryAux (globtab, e, FALSE); | |
702 | } | |
703 | ||
704 | /* | |
705 | ** supercede and replace entry use elements of entries array, and | |
706 | ** assign an element to a new value, and then free the old value. | |
707 | ** Need -deparrays to avoid errors for this. | |
708 | */ | |
709 | ||
710 | /*@-deparrays@*/ | |
711 | ||
712 | static usymId | |
713 | usymtab_supEntryAux (/*@notnull@*/ usymtab st, | |
714 | /*@only@*/ uentry e, bool isSref) | |
715 | /*@globals globtab, filetab@*/ | |
716 | /*@modifies st, globtab, e@*/ | |
717 | { | |
718 | cstring ename = uentry_rawName (e); | |
719 | bool staticEntry = FALSE; | |
b73d1009 | 720 | usymId eindex; |
616915dd | 721 | |
28bf4b0b | 722 | DPRINTF (("Sup entry aux: %s", uentry_unparseFull (e))); |
723 | ||
616915dd | 724 | /* static tags in global scope */ |
725 | if (st->lexlevel == fileScope | |
726 | && (!(uentry_isStatic (e)) || uentry_isAnyTag (e))) | |
727 | { | |
728 | eindex = usymtab_getIndex (st, ename); | |
729 | ||
b73d1009 | 730 | if (usymtab_indexFound (eindex)) |
616915dd | 731 | { |
732 | uentry ce = st->entries[eindex]; | |
733 | ||
734 | if (optgenerror | |
735 | (FLG_SHADOW, | |
736 | message ("%s %q shadows static declaration", | |
737 | ekind_capName (uentry_getKind (e)), | |
738 | uentry_getName (e)), | |
739 | uentry_whereDeclared (e))) | |
740 | { | |
741 | uentry_showWhereLast (ce); | |
742 | } | |
743 | ||
b73d1009 | 744 | if (eindex == usymId_fromInt (st->nentries - 1)) |
616915dd | 745 | { |
746 | ; | |
747 | } | |
748 | else | |
749 | { | |
750 | st->entries[eindex] = st->entries[st->nentries - 1]; | |
751 | } | |
752 | ||
28bf4b0b | 753 | if (cstringTable_isDefined (st->htable)) |
616915dd | 754 | { |
28bf4b0b | 755 | cstringTable_replaceKey (st->htable, uentry_rawName (ce), |
756 | cstring_copy (uentry_rawName (e))); | |
616915dd | 757 | } |
758 | ||
759 | uentry_free (ce); | |
760 | st->nentries--; | |
761 | } | |
762 | ||
763 | st = globtab; | |
764 | } | |
765 | ||
766 | if (uentry_isStatic (e)) { | |
767 | if (uentry_isFunction (e)) { | |
28bf4b0b | 768 | /* |
769 | ** Static function declarations are at the file level, | |
770 | ** even if they are in a deeper scope. | |
771 | */ | |
772 | ||
616915dd | 773 | st = usymtab_getFileTab (); |
774 | staticEntry = TRUE; | |
775 | } else { | |
776 | if (!uentry_isAnyTag (e) && st == globtab) | |
777 | { | |
778 | st = usymtab_getFileTab (); | |
779 | staticEntry = TRUE; | |
780 | DPRINTF (("Static entry!")); | |
781 | } | |
782 | } | |
783 | } | |
784 | ||
616915dd | 785 | eindex = usymtab_getIndex (st, ename); |
786 | ||
b73d1009 | 787 | if (usymtab_indexFound (eindex)) |
616915dd | 788 | { |
789 | uentry ce = st->entries[eindex]; | |
28bf4b0b | 790 | |
616915dd | 791 | DPRINTF (("Found entry: %s", uentry_unparse (ce))); |
792 | ||
793 | if (uentry_isPriv (ce) | |
794 | /* || (fileloc_isImport (uentry_whereSpecified (ce))) */ | |
795 | || (uentry_isStatic (ce) | |
796 | && uentry_isAnyTag (ce) | |
797 | && (uentry_isDeclared (ce) | |
798 | && !fileloc_sameFile (uentry_whereDefined (ce), | |
799 | uentry_whereDefined (e))))) | |
800 | { | |
801 | /* | |
802 | ** overload entry | |
803 | ** if overloading import should do some checks! | |
804 | */ | |
805 | ||
806 | llassert ((st->lexlevel > fileScope || !sRef_modInFunction ())); | |
807 | ||
28bf4b0b | 808 | DPRINTF (("Overloading!")); |
809 | ||
616915dd | 810 | st->entries[eindex] = e; |
811 | ||
812 | if (uentry_isDatatype (e)) | |
813 | { | |
b73d1009 | 814 | uentry_setDatatype (e, typeId_fromUsymId (eindex)); |
616915dd | 815 | } |
816 | ||
817 | if (st == globtab && !uentry_isSpecified (e)) | |
818 | { | |
819 | exprChecks_checkExport (e); | |
820 | } | |
821 | ||
28bf4b0b | 822 | if (cstringTable_isDefined (st->htable)) |
616915dd | 823 | { |
28bf4b0b | 824 | cstringTable_replaceKey (st->htable, uentry_rawName (ce), |
825 | cstring_copy (uentry_rawName (e))); | |
616915dd | 826 | } |
827 | ||
828 | uentry_free (ce); | |
829 | ce = e; | |
830 | } | |
831 | else if (uentry_isSpecified (ce)) | |
832 | { | |
833 | if (uentry_isSpecified (e)) | |
834 | { | |
28bf4b0b | 835 | DPRINTF (("Here we are: %s", uentry_unparseFull (e))); |
836 | ||
616915dd | 837 | if (fileloc_isImport (uentry_whereSpecified (ce))) |
28bf4b0b | 838 | { |
839 | if (cstringTable_isDefined (st->htable)) | |
616915dd | 840 | { |
28bf4b0b | 841 | cstringTable_replaceKey (st->htable, |
842 | uentry_rawName (ce), | |
843 | cstring_copy (uentry_rawName (e))); | |
616915dd | 844 | } |
845 | ||
846 | uentry_free (ce); | |
847 | st->entries[eindex] = e; | |
848 | ce = e; | |
849 | ||
b73d1009 | 850 | if (uentry_isDatatype (e)) uentry_setDatatype (e, typeId_fromUsymId (eindex)); |
616915dd | 851 | } |
852 | else | |
853 | { | |
854 | if (fileloc_isImport (uentry_whereSpecified (e))) | |
855 | { | |
856 | uentry_free (e); | |
857 | } | |
858 | else | |
859 | { | |
28bf4b0b | 860 | /* Respecification errors already reported */ |
861 | DPRINTF (("Respecification: %s / %s", | |
862 | fileloc_unparse (uentry_whereSpecified (e)), | |
863 | bool_unparse (fileloc_isSpec (uentry_whereSpecified (e))))); | |
864 | ||
616915dd | 865 | if (uentry_isDatatype (e)) |
866 | { | |
b73d1009 | 867 | uentry_setDatatype (e, typeId_fromUsymId (eindex)); |
616915dd | 868 | } |
869 | ||
28bf4b0b | 870 | if (cstringTable_isDefined (st->htable)) |
616915dd | 871 | { |
28bf4b0b | 872 | cstringTable_replaceKey (st->htable, |
873 | uentry_rawName (ce), | |
874 | cstring_copy (uentry_rawName (e))); | |
616915dd | 875 | } |
876 | ||
877 | llassert ((st->lexlevel > fileScope || !sRef_modInFunction ())); | |
878 | uentry_free (ce); | |
879 | st->entries[eindex] = e; | |
880 | ce = e; | |
881 | } | |
882 | } | |
883 | } | |
884 | else /* e not specified */ | |
885 | { | |
28bf4b0b | 886 | DPRINTF (("Merging...")); |
887 | ||
616915dd | 888 | if (uentry_isDeclared (ce)) |
889 | { | |
1d239d69 | 890 | /* evans 2001-08-26 |
891 | No - this can happen for internal typedefs | |
892 | llassert ((st->lexlevel > fileScope || !sRef_modInFunction ())); | |
893 | */ | |
894 | ||
28bf4b0b | 895 | DPRINTF (("Merge defn")); |
616915dd | 896 | uentry_mergeDefinition (ce, e); |
897 | } | |
898 | else | |
899 | { | |
1d239d69 | 900 | /* evans 2001-08-26 |
901 | No - this can happen for internal typedefs | |
902 | llassert ((st->lexlevel > fileScope || !sRef_modInFunction ())); | |
903 | */ | |
904 | ||
28bf4b0b | 905 | DPRINTF (("Merge entries...")); |
616915dd | 906 | uentry_mergeEntries (ce, e); |
28bf4b0b | 907 | DPRINTF (("After: %s", uentry_unparseFull (ce))); |
616915dd | 908 | } |
909 | } | |
910 | } | |
911 | else /* ce not specified */ | |
912 | { | |
913 | if (!(st->lexlevel > fileScope || !sRef_modInFunction ())) | |
914 | { | |
915 | if (uentry_isDatatype (e) || uentry_isAnyTag (e) | |
140c27a8 | 916 | || uentry_isEnumConstant (e) |
917 | || uentry_isStatic (e)) /* bug fix from Brian St. Pierre */ | |
616915dd | 918 | { |
919 | ; /* | |
920 | ** Not a bug. Code like, | |
921 | ** int f (void) { typedef int tint; ... } | |
922 | ** is legal. | |
923 | */ | |
924 | } | |
925 | else | |
926 | { | |
927 | llcontbug (message ("usymtab_supEntryAux: inconsistent state " | |
928 | "(lexlevel = %d, modFunction = %s) adding: %q", | |
929 | st->lexlevel, bool_unparse (sRef_modInFunction ()), | |
930 | uentry_unparse (e))); | |
931 | ||
932 | if (sRef_modInFunction ()) | |
933 | { | |
934 | /* make sure the sRef is not bashed! */ | |
935 | /*@i@*/ e->sref = sRef_saveCopy (e->sref); | |
936 | } | |
937 | } | |
938 | } | |
939 | ||
28bf4b0b | 940 | DPRINTF (("Merge..")); |
616915dd | 941 | uentry_mergeDefinition (ce, e); |
942 | } | |
943 | ||
944 | if (isSref) | |
945 | { | |
946 | ctype ct = uentry_getType (ce); | |
947 | ||
948 | if (uentry_isFunction (ce) && ctype_isFunction (ct)) | |
949 | { | |
28bf4b0b | 950 | ct = ctype_getReturnType (ct); |
616915dd | 951 | } |
952 | ||
16c024b5 | 953 | uentry_setSref |
954 | (ce, sRef_makeCvar (st->lexlevel, eindex, ct, | |
955 | stateInfo_makeLoc (uentry_whereLast (ce), SA_DECLARED))); | |
6970c11b | 956 | } |
616915dd | 957 | } |
958 | else /* no previous entry */ | |
959 | { | |
960 | uentry outer; | |
961 | ||
962 | if (st->lexlevel == globScope | |
963 | && !uentry_isStatic (e) | |
964 | && !uentry_isExtern (e) | |
965 | && usymtab_isDefined (filetab)) | |
966 | { | |
967 | /* | |
968 | ** check if there is a static entry: (i.e., | |
969 | ** | |
970 | ** static int f (); | |
971 | ** ... | |
972 | ** int f (); | |
973 | */ | |
974 | ||
975 | eindex = usymtab_getIndex (filetab, ename); | |
976 | ||
b73d1009 | 977 | if (usymtab_indexFound (eindex)) |
616915dd | 978 | { |
979 | uentry ce = filetab->entries[eindex]; | |
980 | ||
981 | uentry_setStatic (e); | |
982 | uentry_mergeDefinition (ce, e); | |
983 | staticEntry = TRUE; | |
984 | goto exitPoint; | |
985 | } | |
986 | } | |
987 | ||
988 | outer = usymtab_lookupQuiet (st->env, ename); | |
989 | ||
7ebcc5bb | 990 | DPRINTF (("New : [%p] %s", e, uentry_unparseFull (e))); |
991 | DPRINTF (("Outer: [%p] %s", outer, uentry_unparseFull (outer))); | |
992 | ||
616915dd | 993 | /* |
994 | ** no previous definition, add the new one | |
995 | */ | |
996 | ||
997 | if (!noshadowerror | |
998 | && uentry_isValid (outer) | |
999 | && !(uentry_isYield (e) || uentry_isYield (outer)) | |
1000 | && fileloc_isDefined (uentry_whereLast (e)) | |
ccf0a4a8 | 1001 | && !fileloc_isXHFile (uentry_whereLast (e)) |
1002 | && fileloc_isDefined (uentry_whereLast (outer)) | |
1003 | && !fileloc_isXHFile (uentry_whereLast (outer))) | |
616915dd | 1004 | { |
1005 | if (!uentry_sameKind (outer, e)) | |
1006 | { | |
1007 | ; /* no error */ | |
1008 | } | |
1009 | else | |
1010 | { | |
1011 | if (ctype_isUnknown (uentry_getType (outer)) | |
1012 | || uentry_isForward (outer)) | |
1013 | { | |
1014 | ; | |
1015 | } | |
1016 | else | |
1017 | { | |
1018 | if (optgenerror | |
1019 | (FLG_SHADOW, | |
1020 | message ("%s %q shadows outer declaration", | |
1021 | ekind_capName (uentry_getKind (e)), | |
1022 | uentry_getName (e)), | |
1023 | uentry_whereLast (e))) | |
1024 | { | |
1025 | uentry_showWhereLast (outer); | |
1026 | } | |
1027 | } | |
1028 | } | |
1029 | } | |
1030 | ||
1031 | if (st == globtab && context_getFlag (FLG_NEWDECL)) | |
1032 | { | |
1033 | voptgenerror | |
1034 | (FLG_NEWDECL, | |
1035 | message ("New declaration: %q", uentry_getName (e)), | |
1036 | uentry_whereLast (e)); | |
1037 | } | |
1038 | ||
1039 | eindex = usymtab_addEntryAux (st, e, isSref); | |
1040 | } | |
1041 | ||
1042 | exitPoint: | |
b73d1009 | 1043 | return (staticEntry ? usymId_invalid : eindex); |
616915dd | 1044 | } |
1045 | ||
616915dd | 1046 | static void |
1047 | usymtab_replaceEntryAux (/*@notnull@*/ usymtab st, /*@only@*/ uentry e) | |
1048 | /*@globals globtab@*/ /*@modifies st, e@*/ | |
1049 | { | |
1050 | cstring ename = uentry_rawName (e); | |
b73d1009 | 1051 | usymId eindex; |
616915dd | 1052 | |
1053 | /* static tags in global scope */ | |
1054 | eindex = usymtab_getIndex (st, ename); | |
1055 | ||
b73d1009 | 1056 | if (usymtab_indexFound (eindex)) |
616915dd | 1057 | { |
1058 | uentry ce = st->entries[eindex]; | |
1059 | ||
28bf4b0b | 1060 | if (cstringTable_isDefined (st->htable)) |
616915dd | 1061 | { |
28bf4b0b | 1062 | cstringTable_replaceKey (st->htable, uentry_rawName (ce), |
1063 | cstring_copy (uentry_rawName (e))); | |
616915dd | 1064 | } |
1065 | ||
1066 | uentry_free (ce); | |
1067 | st->entries[eindex] = e; | |
1068 | } | |
1069 | else | |
1070 | { | |
1071 | eindex = usymtab_addEntryAux (st, e, FALSE); | |
1072 | } | |
1073 | } | |
616915dd | 1074 | |
1075 | /*@=deparrays@*/ | |
1076 | ||
1077 | void usymtab_supEntry (uentry e) | |
1078 | /*@globals utab, filetab, globtab@*/ | |
1079 | /*@modifies utab, globtab, e@*/ | |
1080 | { | |
1081 | (void) usymtab_supEntryAux (utab, e, FALSE); | |
1082 | } | |
1083 | ||
1084 | /* | |
1085 | ** this should be lots more efficient! | |
1086 | */ | |
1087 | ||
1088 | static /*@exposed@*/ uentry | |
1089 | usymtab_supEntryReturnAux (/*@notnull@*/ usymtab tab, | |
1090 | /*@only@*/ uentry e, bool isref) | |
1091 | /*@globals globtab, filetab@*/ | |
1092 | /*@modifies tab, globtab, e@*/ | |
1093 | { | |
1094 | cstring rawName = cstring_copy (uentry_rawName (e)); | |
1095 | bool stat = (tab == globtab) && uentry_isStatic (e); | |
1096 | uentry ret; | |
1097 | ||
616915dd | 1098 | (void) usymtab_supEntryAux (tab, e, isref); |
1099 | ||
1100 | if (stat) | |
1101 | { | |
1102 | ret = usymtab_lookupAux (filetab, rawName); | |
1103 | } | |
1104 | else | |
1105 | { | |
1106 | ret = usymtab_lookupAux (tab, rawName); | |
1107 | ||
1108 | if (uentry_isInvalid (ret) && usymtab_isDefined (filetab)) | |
1109 | { | |
1110 | ret = usymtab_lookupAux (filetab, rawName); | |
1111 | } | |
1112 | } | |
1113 | ||
1114 | cstring_free (rawName); | |
1115 | return ret; | |
1116 | } | |
1117 | ||
1118 | /*@dependent@*/ /*@exposed@*/ uentry | |
1119 | usymtab_supEntryReturn (/*@only@*/ uentry e) | |
1120 | /*@globals utab, filetab, globtab@*/ | |
1121 | /*@modifies utab, globtab, e@*/ | |
1122 | { | |
1123 | return (usymtab_supEntryReturnAux (utab, e, FALSE)); | |
1124 | } | |
1125 | ||
1126 | /*@dependent@*/ /*@exposed@*/ uentry | |
1127 | usymtab_supEntrySrefReturn (/*@only@*/ uentry e) | |
1128 | /*@globals utab, globtab, filetab@*/ | |
1129 | /*@modifies utab, globtab, e@*/ | |
1130 | { | |
1131 | return (usymtab_supEntryReturnAux (utab, e, TRUE)); | |
1132 | } | |
1133 | ||
1134 | /*@dependent@*/ /*@exposed@*/ uentry | |
1135 | usymtab_supGlobalEntryReturn (uentry e) | |
1136 | /*@globals globtab, filetab@*/ | |
1137 | /*@modifies globtab, e@*/ | |
1138 | { | |
1139 | uentry ret; | |
1140 | ||
1141 | ret = usymtab_supEntryReturnAux (globtab, e, FALSE); | |
1142 | ||
7ebcc5bb | 1143 | /* |
1144 | ** We need to keep track of internal function declarations, so | |
1145 | ** we can remove them from the symbol table after exiting this | |
1146 | ** function. This is a bit bogus, of course. | |
1147 | */ | |
1148 | ||
616915dd | 1149 | if (sRef_modInFunction ()) |
1150 | { | |
1151 | recordFunctionType (ret); | |
1152 | } | |
1153 | ||
1154 | return (ret); | |
1155 | } | |
1156 | ||
1157 | ctype | |
1158 | usymtab_supTypeEntry (/*@only@*/ uentry e) | |
1159 | /*@globals globtab, filetab@*/ | |
1160 | /*@modifies globtab, e@*/ | |
1161 | { | |
1162 | usymId uid; | |
1163 | ctype ret; | |
1164 | ||
1165 | if (uentry_isAbstractDatatype (e)) | |
1166 | { | |
b73d1009 | 1167 | typeId tid = usymtab_supAbstractTypeEntry (e, FALSE); |
1168 | ret = ctype_createAbstract (tid); | |
1169 | uid = typeId_toUsymId (tid); | |
616915dd | 1170 | } |
1171 | else | |
1172 | { | |
1173 | uid = usymtab_supEntryAux (globtab, e, FALSE); | |
b73d1009 | 1174 | ret = ctype_createUser (typeId_fromUsymId (uid)); |
616915dd | 1175 | } |
1176 | ||
1177 | if (sRef_modInFunction ()) | |
1178 | { | |
1179 | recordFunctionType (globtab->entries[uid]); | |
1180 | } | |
1181 | ||
1182 | return ret; | |
1183 | } | |
1184 | ||
1185 | uentry | |
1186 | usymtab_supReturnTypeEntry (/*@only@*/ uentry e) | |
1187 | /*@globals globtab, filetab@*/ | |
1188 | /*@modifies globtab@*/ | |
1189 | { | |
1190 | usymId uid; | |
28bf4b0b | 1191 | |
1192 | DPRINTF (("Abstract? %s", uentry_unparseFull (e))); | |
1193 | ||
616915dd | 1194 | if (uentry_isAbstractDatatype (e)) |
1195 | { | |
b73d1009 | 1196 | uid = typeId_toUsymId (usymtab_supAbstractTypeEntry (e, FALSE)); |
616915dd | 1197 | } |
28bf4b0b | 1198 | else if (uentry_isMaybeAbstract (e) && context_getFlag (FLG_IMPABSTRACT)) |
1199 | { | |
1200 | bool maybeabs = TRUE; | |
1201 | cstring sname = uentry_getName (e); | |
1202 | uentry ue = usymtab_lookupGlobSafe (sname); | |
1203 | cstring_free (sname); | |
1204 | ||
1205 | if (uentry_isValid (ue)) | |
1206 | { | |
1207 | DPRINTF (("Lookup: %s", uentry_unparseFull (ue))); | |
1208 | ||
1209 | if (uentry_isDatatype (ue)) | |
1210 | { | |
1211 | if (uentry_isMaybeAbstract (ue)) | |
1212 | { | |
1213 | ; | |
1214 | } | |
1215 | else | |
1216 | { | |
1217 | maybeabs = FALSE; | |
1218 | } | |
1219 | } | |
1220 | else | |
1221 | { | |
1222 | DPRINTF (("Not datatype!")); | |
1223 | } | |
1224 | } | |
1225 | ||
1226 | if (maybeabs) | |
1227 | { | |
1228 | uentry ux; | |
b73d1009 | 1229 | typeId tid = usymtab_supAbstractTypeEntry (e, FALSE); |
1230 | ux = usymtab_getTypeEntry (tid); | |
28bf4b0b | 1231 | uentry_setAbstract (ux); |
b73d1009 | 1232 | uid = typeId_toUsymId (tid); |
28bf4b0b | 1233 | } |
1234 | else | |
1235 | { | |
1236 | uid = usymtab_supEntryAux (globtab, e, FALSE); | |
b73d1009 | 1237 | e = usymtab_getTypeEntry (typeId_fromUsymId (uid)); |
28bf4b0b | 1238 | |
1239 | if (uentry_isMaybeAbstract (e)) | |
1240 | { | |
1241 | uentry_setConcrete (e); | |
1242 | } | |
1243 | } | |
1244 | } | |
616915dd | 1245 | else |
1246 | { | |
1247 | uid = usymtab_supEntryAux (globtab, e, FALSE); | |
b73d1009 | 1248 | e = usymtab_getTypeEntry (typeId_fromUsymId (uid)); |
28bf4b0b | 1249 | |
e5081f8c | 1250 | /*? evans 2002-12-16 removed this? it doesn't make sense |
28bf4b0b | 1251 | if (uentry_isMaybeAbstract (e)) |
1252 | { | |
1253 | uentry_setConcrete (e); | |
1254 | } | |
e5081f8c | 1255 | */ |
616915dd | 1256 | } |
1257 | ||
1258 | if (sRef_modInFunction ()) | |
1259 | { | |
1260 | recordFunctionType (globtab->entries[uid]); | |
1261 | } | |
1262 | ||
1263 | return (globtab->entries[uid]); | |
1264 | } | |
1265 | ||
b73d1009 | 1266 | typeId |
616915dd | 1267 | usymtab_supAbstractTypeEntry (/*@only@*/ uentry e, bool dodef) |
1268 | /*@globals globtab, filetab@*/ | |
1269 | /*@modifies globtab, e@*/ | |
1270 | { | |
b73d1009 | 1271 | typeId uid; |
28bf4b0b | 1272 | uentry ue; |
1273 | ||
b73d1009 | 1274 | uid = typeId_fromUsymId (usymtab_supEntryAux (globtab, e, FALSE)); |
28bf4b0b | 1275 | ue = usymtab_getTypeEntry (uid); |
616915dd | 1276 | |
1277 | if (dodef) | |
1278 | { | |
616915dd | 1279 | uentry_setDatatype (ue, uid); |
1280 | } | |
1281 | ||
28bf4b0b | 1282 | if (context_getFlag (FLG_ACCESSMODULE)) /* was accessfile */ |
616915dd | 1283 | { |
1284 | context_addFileAccessType (uid); | |
1285 | } | |
1286 | ||
1287 | if (sRef_modInFunction ()) | |
1288 | { | |
1289 | recordFunctionType (globtab->entries[uid]); | |
1290 | } | |
1291 | ||
1292 | return (uid); | |
1293 | } | |
1294 | ||
b73d1009 | 1295 | typeId |
616915dd | 1296 | usymtab_supExposedTypeEntry (/*@only@*/ uentry e, bool dodef) |
1297 | /*@globals globtab, filetab@*/ | |
1298 | /*@modifies globtab, e@*/ | |
1299 | { | |
b73d1009 | 1300 | typeId uid; |
616915dd | 1301 | |
b73d1009 | 1302 | uid = typeId_fromUsymId (usymtab_supEntryAux (globtab, e, FALSE)); |
616915dd | 1303 | |
1304 | if (dodef) | |
1305 | { | |
1306 | uentry ue = usymtab_getTypeEntry (uid); | |
1307 | ||
1308 | uentry_setDatatype (ue, uid); | |
1309 | } | |
1310 | ||
1311 | if (sRef_modInFunction ()) | |
1312 | { | |
1313 | recordFunctionType (globtab->entries[uid]); | |
1314 | } | |
1315 | ||
b73d1009 | 1316 | return uid; |
616915dd | 1317 | } |
616915dd | 1318 | |
1319 | ctype | |
1320 | usymtab_supForwardTypeEntry (/*@only@*/ uentry e) | |
1321 | /*@globals globtab, filetab@*/ | |
1322 | /*@modifies globtab, e@*/ | |
1323 | { | |
b73d1009 | 1324 | typeId uid = typeId_fromUsymId (usymtab_supEntryAux (globtab, e, FALSE)); |
616915dd | 1325 | uentry ue = usymtab_getTypeEntry (uid); |
1326 | ||
1327 | uentry_setDatatype (ue, uid); | |
1328 | ||
1329 | if (sRef_modInFunction ()) | |
1330 | { | |
1331 | recordFunctionType (globtab->entries[uid]); | |
1332 | } | |
1333 | ||
1334 | return (uentry_getAbstractType (ue)); | |
1335 | } | |
1336 | ||
1337 | void | |
1338 | usymtab_supEntrySref (uentry e) | |
1339 | /*@globals utab, globtab, filetab@*/ | |
1340 | /*@modifies utab, globtab, e@*/ | |
1341 | { | |
1342 | sRef old = uentry_getSref (e); | |
616915dd | 1343 | |
1344 | if (sRef_isType (old)) | |
1345 | { | |
1346 | uentry ue = usymtab_supEntryReturnAux (utab, e, TRUE); | |
1347 | ||
1348 | /*@access uentry@*/ | |
1349 | if (uentry_isValid (ue)) | |
1350 | { | |
1351 | sRef uref = uentry_getSref (ue); | |
1352 | ||
1353 | sRef_mergeStateQuiet (uref, old); | |
1354 | sRef_clearDerived (uref); | |
1355 | } | |
1356 | /*@noaccess uentry@*/ | |
1357 | } | |
1358 | else if (sRef_isKnown (old)) | |
1359 | { | |
1360 | usymtab_supEntry (e); | |
1361 | } | |
1362 | else | |
1363 | { | |
1364 | (void) usymtab_supEntryAux (utab, e, TRUE); | |
1365 | } | |
1366 | } | |
1367 | ||
1368 | void usymtab_supGlobalEntry (/*@only@*/ uentry e) | |
1369 | /*@globals globtab, filetab@*/ | |
1370 | /*@modifies globtab, filetab, e@*/ | |
1371 | { | |
1372 | usymId uid; | |
1373 | ||
1374 | DPRINTF (("Sup global entry: %s", uentry_unparse (e))); | |
1375 | ||
1376 | uid = usymtab_supEntryAux (globtab, e, FALSE); | |
1377 | ||
1378 | if (sRef_modInFunction ()) | |
1379 | { | |
1380 | recordFunctionType (globtab->entries[uid]); | |
1381 | } | |
1382 | } | |
1383 | ||
1384 | uentry | |
1385 | usymtab_supReturnFileEntry (/*@only@*/ uentry e) | |
1386 | /*@globals filetab, globtab@*/ | |
1387 | /*@modifies filetab, globtab, e@*/ | |
1388 | { | |
1389 | llassert (filetab != usymtab_undefined); | |
1390 | DPRINTF (("File entry: %s", uentry_unparse (e))); | |
1391 | return (usymtab_supEntryReturnAux (filetab, e, FALSE)); | |
1392 | } | |
1393 | ||
1394 | /* | |
1395 | ** observers | |
1396 | */ | |
1397 | ||
1398 | bool | |
1399 | usymtab_inDeepScope () /*@globals utab@*/ | |
1400 | { | |
1401 | return (utab->lexlevel > paramsScope); | |
1402 | } | |
1403 | ||
b73d1009 | 1404 | static usymId |
616915dd | 1405 | usymtab_getIndex (/*@notnull@*/ usymtab s, cstring k) |
1406 | { | |
1407 | int i; | |
1408 | ||
28bf4b0b | 1409 | DPRINTF (("Lookup %s", k)); |
616915dd | 1410 | |
28bf4b0b | 1411 | if (cstringTable_isDefined (s->htable)) |
1412 | { | |
1413 | i = cstringTable_lookup (s->htable, k); | |
b73d1009 | 1414 | return usymId_fromInt (i); |
616915dd | 1415 | } |
1416 | else | |
1417 | { | |
1418 | for (i = 0; i < s->nentries; i++) | |
1419 | { | |
1420 | uentry current = s->entries[i]; | |
1421 | ||
28bf4b0b | 1422 | DPRINTF (("Check %d: %s", i, uentry_rawName (current))); |
1423 | ||
616915dd | 1424 | if (!uentry_isUndefined (current) |
1425 | && cstring_equal (uentry_rawName (current), k)) | |
1426 | { | |
b73d1009 | 1427 | return usymId_fromInt (i); |
616915dd | 1428 | } |
1429 | } | |
1430 | ||
b73d1009 | 1431 | return usymId_notfound; |
616915dd | 1432 | } |
1433 | } | |
1434 | ||
1435 | static uentry | |
b73d1009 | 1436 | usymtab_fetchIndex (/*@notnull@*/ usymtab s, usymId ui) |
616915dd | 1437 | { |
b73d1009 | 1438 | int i = usymId_toInt (ui); |
616915dd | 1439 | llassert (i >= 0 && i < s->nentries); |
1440 | return (s->entries[i]); | |
1441 | } | |
1442 | ||
b73d1009 | 1443 | typeId |
616915dd | 1444 | usymtab_getTypeId (cstring k) /*@globals globtab@*/ |
1445 | { | |
1446 | usymId uid = usymtab_getIndex (globtab, k); | |
1447 | ||
b73d1009 | 1448 | if (!usymtab_indexFound (uid) |
1449 | || !(uentry_isDatatype (usymtab_getTypeEntry (typeId_fromUsymId (uid))))) | |
1450 | ||
1451 | { | |
1452 | return typeId_invalid; | |
1453 | } | |
1454 | else | |
1455 | { | |
1456 | return typeId_fromUsymId (uid); | |
1457 | } | |
616915dd | 1458 | } |
1459 | ||
1460 | /*@dependent@*/ uentry | |
1461 | usymtab_lookupStructTag (cstring k) | |
1462 | { | |
1463 | cstring sname = makeStruct (k); | |
1464 | uentry ue = usymtab_lookupGlob (sname); | |
28bf4b0b | 1465 | |
1466 | cstring_free (sname); | |
616915dd | 1467 | return (ue); |
1468 | } | |
1469 | ||
1470 | /*@dependent@*/ uentry | |
1471 | usymtab_lookupUnionTag (cstring k) | |
1472 | { | |
1473 | cstring uname = makeUnion (k); | |
1474 | uentry res = usymtab_lookupGlob (uname); | |
1475 | ||
1476 | cstring_free (uname); | |
1477 | return res; | |
1478 | } | |
1479 | ||
1480 | /*@dependent@*/ uentry | |
1481 | usymtab_lookupEnumTag (cstring k) | |
1482 | { | |
1483 | cstring ename = makeEnum (k); | |
1484 | uentry res = usymtab_lookupGlob (ename); | |
1485 | ||
1486 | cstring_free (ename); | |
1487 | return res; | |
1488 | } | |
1489 | ||
1490 | usymId | |
1491 | usymtab_getId (cstring k) /*@globals globtab@*/ | |
1492 | { | |
1493 | usymId uid = usymtab_getIndex (globtab, k); | |
1494 | uentry ue; | |
1495 | ||
b73d1009 | 1496 | if (!usymtab_indexFound (uid)) |
616915dd | 1497 | { |
b73d1009 | 1498 | return usymId_invalid; |
616915dd | 1499 | } |
1500 | ||
1501 | ue = usymtab_getGlobalEntry (uid); | |
1502 | ||
1503 | if (uentry_isPriv (ue)) | |
1504 | { | |
b73d1009 | 1505 | return usymId_invalid; |
616915dd | 1506 | } |
1507 | ||
1508 | return uid; | |
1509 | } | |
1510 | ||
1511 | static /*@exposed@*/ uentry | |
1512 | usymtab_getEntryAux (/*@notnull@*/ usymtab s, usymId uid) | |
1513 | { | |
b73d1009 | 1514 | llassert (uid != usymId_invalid); |
616915dd | 1515 | |
b73d1009 | 1516 | if (uid < 0 || uid >= usymId_fromInt (s->nentries)) |
616915dd | 1517 | { |
1518 | llcontbug (message ("usymtab_getEntry: out of range: level = %d [%d]", | |
1519 | s->lexlevel, uid)); | |
1520 | return uentry_undefined; | |
1521 | } | |
1522 | ||
1523 | llassertprint (uentry_isValid (s->entries[uid]), | |
1524 | ("entry undefined: %d", uid)); | |
1525 | ||
1526 | return s->entries[uid]; | |
1527 | } | |
1528 | ||
1529 | /*@dependent@*/ /*@observer@*/ uentry | |
1530 | usymtab_getGlobalEntry (usymId uid) | |
1531 | /*@globals utab, globtab@*/ | |
1532 | { | |
1533 | if (dbgfree) return (uentry_undefined); | |
1534 | ||
1535 | if (utab->lexlevel > paramsScope) | |
1536 | { | |
1537 | /* need to do this the awkward way, since it could be in conditional scope */ | |
1538 | return (usymtab_lookupSafe (uentry_rawName (globtab->entries[uid]))); | |
1539 | } | |
1540 | else | |
1541 | { | |
1542 | return (globtab->entries[uid]); | |
1543 | } | |
1544 | } | |
1545 | ||
b73d1009 | 1546 | /*@dependent@*/ /*@exposed@*/ uentry usymtab_getTypeEntry (typeId uid) |
616915dd | 1547 | /*@globals globtab@*/ |
1548 | { | |
1549 | if (dbgload) | |
1550 | { | |
b73d1009 | 1551 | if (uid >= 0 && uid < typeId_fromInt (globtab->nentries)) |
616915dd | 1552 | { |
1553 | return (globtab->entries[uid]); | |
1554 | } | |
1555 | else | |
1556 | { | |
1557 | return (uentry_undefined); | |
1558 | } | |
1559 | } | |
1560 | else | |
1561 | { | |
b73d1009 | 1562 | llassert (uid >= 0 && uid < typeId_fromInt (globtab->nentries)); |
616915dd | 1563 | return (globtab->entries[uid]); |
1564 | } | |
1565 | } | |
1566 | ||
1567 | /* | |
1568 | ** in load files | |
1569 | */ | |
1570 | ||
b73d1009 | 1571 | /*@dependent@*/ /*@exposed@*/ uentry usymtab_getTypeEntrySafe (typeId uid) |
616915dd | 1572 | /*@globals globtab@*/ |
1573 | { | |
b73d1009 | 1574 | if (uid < 0 || uid >= typeId_fromInt (globtab->nentries)) |
616915dd | 1575 | { |
1576 | return uentry_undefined; | |
1577 | } | |
b73d1009 | 1578 | |
1579 | return (globtab->entries[uid]); | |
616915dd | 1580 | } |
1581 | ||
b73d1009 | 1582 | bool usymtab_isBoolType (typeId uid) |
616915dd | 1583 | /*@globals globtab@*/ |
1584 | { | |
b73d1009 | 1585 | llassert (uid >= 0 && uid < typeId_fromInt (globtab->nentries)); |
616915dd | 1586 | |
1587 | return (cstring_equal (uentry_rawName (globtab->entries[uid]), | |
1588 | context_getBoolName ())); | |
1589 | } | |
1590 | ||
b73d1009 | 1591 | cstring usymtab_getTypeEntryName (typeId uid) |
616915dd | 1592 | /*@globals globtab@*/ |
1593 | { | |
1594 | uentry ue; | |
1595 | ||
1596 | if (dbgfree) | |
1597 | { | |
1598 | return (cstring_makeLiteral ("<freetype>")); | |
1599 | } | |
1600 | ||
1601 | ue = usymtab_getTypeEntry (uid); | |
1602 | ||
1603 | if (dbgload && !uentry_isValid (ue)) | |
1604 | { | |
1605 | return (message ("<missing type: %d>", uid)); | |
1606 | } | |
1607 | ||
1608 | llassertprint (uentry_isValid (ue), ("type undefined: %d", uid)); | |
1609 | ||
1610 | return (uentry_getName (ue)); | |
1611 | } | |
1612 | ||
8250fa4a | 1613 | # if 0 |
28bf4b0b | 1614 | /*@unused@*/ static void |
616915dd | 1615 | usymtab_rehash (/*@notnull@*/ usymtab s) |
1616 | { | |
1617 | int i; | |
1618 | ||
28bf4b0b | 1619 | if (cstringTable_isDefined (s->htable)) |
616915dd | 1620 | { |
28bf4b0b | 1621 | cstringTable_free (s->htable); |
616915dd | 1622 | } |
1623 | ||
d5047b91 | 1624 | s->htable = cstringTable_create (LLAHSHSIZE); |
616915dd | 1625 | |
1626 | for (i = 0; i < s->nentries; i++) | |
1627 | { | |
28bf4b0b | 1628 | cstringTable_insert (s->htable, cstring_copy (uentry_rawName (s->entries[i])), i); |
616915dd | 1629 | } |
1630 | } | |
8250fa4a | 1631 | # endif |
616915dd | 1632 | |
1633 | /* | |
1634 | ** superficial copy of usymtab | |
1635 | ** | |
1636 | ** DO copy spec entries | |
1637 | */ | |
1638 | ||
1639 | static /*@only@*/ /*@notnull@*/ usymtab | |
1640 | usymtab_shallowCopy (/*@notnull@*/ usymtab s) /*@*/ | |
1641 | { | |
1642 | usymtab copytab = usymtab_createRoot (); | |
1643 | int i; | |
1644 | ||
1645 | for (i = 0; i < s->nentries; i++) | |
1646 | { | |
1647 | usymtab_addEntryBase (copytab, s->entries[i]); | |
1648 | } | |
1649 | ||
1650 | return copytab; | |
1651 | } | |
1652 | ||
1653 | static void | |
1654 | usymtab_shallowFree (/*@only@*/ /*@notnull@*/ usymtab s) | |
1655 | { | |
1656 | aliasTable_free (s->aliases); | |
1657 | refTable_free (s->reftable, s->nentries); | |
1658 | sfree (s->entries); | |
1659 | /*@-compdestroy@*/ sfree (s); /*@=compdestroy@*/ | |
1660 | } | |
1661 | ||
b73d1009 | 1662 | usymId usymtab_convertTypeId (typeId uid) |
1663 | { | |
1664 | return usymtab_convertId (typeId_toUsymId (uid)); | |
1665 | } | |
1666 | ||
616915dd | 1667 | /* |
b73d1009 | 1668 | ** usymtab_convertId: converts usymId from old table to sorted one |
616915dd | 1669 | */ |
1670 | ||
b73d1009 | 1671 | usymId usymtab_convertId (usymId uid) |
616915dd | 1672 | /*@globals oldtab, utab@*/ |
1673 | { | |
1674 | uentry ue; | |
1675 | usymId ret; | |
1676 | cstring name; | |
1677 | ||
1678 | llassert (usymtab_isDefined (oldtab)); | |
1679 | ||
1680 | ue = usymtab_getEntryAux (oldtab, uid); | |
1681 | ||
1682 | llassertprint (uentry_isValid (ue), ("convertId: undefined: %d", uid)); | |
1683 | ||
1684 | name = uentry_rawName (ue); | |
1685 | ||
1686 | ret = usymtab_getIndex (utab, name); | |
28bf4b0b | 1687 | llassert (ret == uid); /*! for now, no rehash! */ |
1688 | DPRINTF (("Convert: %s [%d] -> %s [%d]", | |
1689 | uentry_unparse (ue), uid, | |
1690 | uentry_unparse (utab->entries[ret]), ret)); | |
616915dd | 1691 | |
b73d1009 | 1692 | llassertprint (ret != usymId_invalid, ("convertId: return is invalid")); |
616915dd | 1693 | |
1694 | return (ret); | |
1695 | } | |
1696 | ||
1697 | void | |
1698 | usymtab_prepareDump (void) | |
1699 | /*@globals oldtab, utab@*/ | |
1700 | /*@modifies oldtab, utab@*/ | |
1701 | { | |
1702 | llassert (usymtab_inGlobalScope ()); | |
616915dd | 1703 | llassert (oldtab == usymtab_undefined); |
1704 | ||
28bf4b0b | 1705 | /* |
1706 | DPRINTF (("Preparing to dump:")); | |
1707 | usymtab_printAll (); | |
1708 | */ | |
1709 | ||
616915dd | 1710 | oldtab = usymtab_shallowCopy (utab); |
1711 | ||
1712 | /* | |
28bf4b0b | 1713 | ** alpha compare - make sure order is same on different platforms |
1714 | ** error messages appear in same order | |
616915dd | 1715 | */ |
1716 | ||
28bf4b0b | 1717 | /* |
616915dd | 1718 | qsort (utab->entries, (size_t)utab->nentries, |
28bf4b0b | 1719 | sizeof (*utab->entries), |
1720 | (int (*)(const void *, const void *)) uentry_xcomparealpha); | |
1721 | ||
616915dd | 1722 | usymtab_rehash (utab); |
28bf4b0b | 1723 | */ |
1724 | ||
1725 | /* | |
1726 | DPRINTF (("After rehash:")); | |
1727 | usymtab_printAll (); | |
1728 | */ | |
616915dd | 1729 | } |
1730 | ||
28bf4b0b | 1731 | void usymtab_dump (FILE *fout) |
1732 | /*@globals utab, oldtab@*/ | |
616915dd | 1733 | { |
1734 | int i; | |
1735 | bool neednl = FALSE; | |
1736 | uentry lastentry = uentry_undefined; | |
1737 | ekind lastekind = KINVALID; | |
1738 | int linelen = 0; | |
1739 | ||
1740 | /* | |
1741 | ** must call prepareDump first | |
1742 | */ | |
1743 | ||
1744 | llassert (oldtab != usymtab_undefined); | |
1745 | ||
1746 | for (i = 0; i < utab->nentries; i++) | |
1747 | { | |
1748 | uentry thisentry = utab->entries[i]; | |
1749 | ekind thisekind = uentry_getKind (thisentry); | |
1750 | ||
28bf4b0b | 1751 | if (!uentry_hasRealName (thisentry)) |
1752 | { | |
1753 | llassert (uentry_isGlobalMarker (thisentry)); | |
1754 | ||
1755 | if (neednl) | |
1756 | { | |
1757 | check (fputc ('\n', fout) == (int) '\n'); | |
1758 | } | |
1759 | ||
1760 | fprintf (fout, "*%d (GlobalMarker)\n", KGLOBALMARKER); | |
1761 | lastekind = KINVALID; | |
1762 | linelen = 0; | |
1763 | neednl = FALSE; | |
1764 | } | |
1765 | else | |
1766 | { | |
1767 | if (thisekind != lastekind) | |
1768 | { | |
1769 | if (neednl) | |
1770 | { | |
1771 | check (fputc ('\n', fout) == (int) '\n'); | |
1772 | } | |
1773 | ||
1774 | neednl = FALSE; | |
1775 | lastentry = uentry_undefined; | |
1776 | fprintf (fout, "*%d (%s)\n", ekind_toInt (thisekind), | |
1777 | cstring_toCharsSafe (ekind_capName (thisekind))); | |
1778 | lastekind = thisekind; | |
1779 | linelen = 0; | |
1780 | } | |
1781 | ||
1782 | /* | |
1783 | ** evans - 2001-02-18 - added the - 48 fudge factor... | |
1784 | ** extra characters dumped, but I haven't counded them carefully... | |
1785 | */ | |
1786 | ||
1787 | if (uentry_isInvalid (lastentry) || !uentry_equiv (lastentry, thisentry) | |
1788 | || (linelen > (MAX_DUMP_LINE_LENGTH - (2 * MAX_NAME_LENGTH) - 48))) | |
1789 | { | |
1790 | cstring cdump; | |
1791 | ||
1792 | DPRINTF (("Dumping entry: %d", i)); | |
1793 | cdump = message ("^%d %q", i, uentry_dump (thisentry)); | |
1794 | /* was: cdump = uentry_dump (thisentry)); */ | |
1795 | ||
1796 | lastentry = thisentry; | |
1797 | if (neednl) | |
1798 | { | |
1799 | check (fputc ('\n', fout) == (int) '\n'); | |
1800 | linelen = 0; | |
1801 | } | |
1802 | ||
1803 | linelen += cstring_length (cdump); | |
1804 | ||
1805 | /* no new line here! */ | |
1806 | if (cstring_length (cdump) > 0) | |
1807 | { | |
1808 | check (fputs (cstring_toCharsSafe (cdump), fout) != EOF); | |
1809 | } | |
1810 | ||
1811 | cstring_free (cdump); | |
1812 | neednl = TRUE; | |
1813 | } | |
1814 | else | |
1815 | { | |
1816 | cstring cdump = uentry_rawName (thisentry); | |
1817 | DPRINTF (("Raw name: %s", cdump)); | |
1818 | linelen += (cstring_length (cdump) + 1); | |
1819 | fprintf (fout, "#%s", cstring_toCharsSafe (cdump)); | |
1820 | } | |
1821 | } | |
616915dd | 1822 | } |
1823 | ||
1824 | if (neednl) | |
1825 | { | |
1826 | check (fputc ('\n', fout) == (int) '\n'); | |
1827 | } | |
920a3797 | 1828 | |
1829 | lastekind = KINVALID; | |
1830 | ||
1831 | fprintf(fout, ";; Library constraints\n"); | |
35eea586 | 1832 | |
1833 | /*drl July 27 added this so that libraries without | |
1834 | buffer constraints would be handled correctly. | |
1835 | I'm trying to do this without breaking older libraries. | |
1836 | ||
1837 | Splint should still be able to handle libraries without this message. | |
1838 | */ | |
1839 | ||
1840 | ||
1841 | fprintf(fout, "start_Buffer_Constraints\n"); | |
1842 | ||
920a3797 | 1843 | for (i = 0; i < utab->nentries; i++) |
1844 | { | |
1845 | uentry thisentry = utab->entries[i]; | |
1846 | ||
1847 | if (uentry_isFunction (thisentry) ) | |
1848 | { | |
1849 | constraintList preconditions; | |
1850 | constraintList postconditions; | |
1851 | ||
1852 | preconditions = uentry_getFcnPreconditions (thisentry); | |
1853 | postconditions = uentry_getFcnPostconditions (thisentry); | |
1854 | ||
1855 | if ( constraintList_isDefined(preconditions) || | |
1856 | constraintList_isDefined(postconditions) ) | |
1857 | { | |
28bf4b0b | 1858 | fprintf(fout,"%s\n", cstring_toCharsSafe (uentry_rawName(thisentry) ) ); |
920a3797 | 1859 | if (constraintList_isDefined(preconditions) ) |
1860 | { | |
1861 | fprintf(fout,"pre:\n"); | |
1862 | constraintList_dump(preconditions, fout); | |
1863 | fprintf (fout, ";; end precondition constraints\n" ); | |
1864 | constraintList_free(preconditions); | |
1865 | } | |
1866 | else | |
1867 | { | |
1868 | fprintf(fout,"pre:EMPTY\n"); | |
1869 | } | |
1870 | if (constraintList_isDefined(postconditions) ) | |
1871 | { | |
1872 | fprintf(fout,"post:\n"); | |
1873 | constraintList_dump(postconditions, fout); | |
1874 | fprintf (fout, ";; end precondition constraints\n" ); | |
1875 | constraintList_free(postconditions); | |
1876 | } | |
1877 | else | |
1878 | { | |
1879 | fprintf(fout,"post:EMPTY\n"); | |
1880 | } | |
1881 | } | |
1882 | ||
1883 | } | |
1884 | } | |
616915dd | 1885 | } |
1886 | ||
3e3ec469 | 1887 | |
616915dd | 1888 | void usymtab_load (FILE *f) |
1889 | /*@globals utab, globtab@*/ | |
1890 | /*@modifies utab, *f@*/ | |
1891 | { | |
1892 | char *s = mstring_create (MAX_DUMP_LINE_LENGTH); | |
1893 | char *os = s; | |
1894 | ekind kind = KINVALID; | |
1895 | fileloc loc = g_currentloc; | |
1896 | char c; | |
1897 | uentry ue; | |
1898 | ||
1899 | dbgload = TRUE; | |
1900 | ||
1901 | llassert (utab == globtab); | |
1902 | llassert (utab->nentries == 0); | |
1903 | ||
28bf4b0b | 1904 | while (((s = reader_readLine (f, s, MAX_DUMP_LINE_LENGTH)) != NULL) |
616915dd | 1905 | && *s == ';') |
1906 | { | |
28bf4b0b | 1907 | /* ignore ; comments */ ; |
616915dd | 1908 | } |
28bf4b0b | 1909 | |
616915dd | 1910 | while (s != NULL && *s != ';') |
1911 | { | |
28bf4b0b | 1912 | int index; |
1913 | ||
616915dd | 1914 | if (*s == '*') |
1915 | { | |
28bf4b0b | 1916 | int ek; |
616915dd | 1917 | s++; |
28bf4b0b | 1918 | ek = reader_getInt (&s); |
616915dd | 1919 | |
28bf4b0b | 1920 | if (ek == KGLOBALMARKER) |
1921 | { | |
1922 | uentry lue = uentry_makeGlobalMarker (); | |
1923 | DPRINTF (("Adding global marker: %s", uentry_unparseFull (lue))); | |
1924 | usymtab_addEntryAlways (utab, lue); | |
1925 | kind = KINVALID; | |
1926 | goto nextiter; | |
1927 | } | |
1928 | else | |
1929 | { | |
1930 | kind = ekind_fromInt (ek); | |
1931 | goto nextiter; | |
1932 | } | |
616915dd | 1933 | } |
1934 | ||
1935 | if (*s == '$') | |
1936 | { | |
1937 | llfatalerror | |
1938 | (cstring_makeLiteral | |
1b8ae690 | 1939 | ("Library is in obsolete format. Use splint +whichlib " |
616915dd | 1940 | "to see which library is being loaded.")); |
1941 | } | |
1942 | ||
28bf4b0b | 1943 | if (reader_optCheckChar (&s, '^')) |
1944 | { | |
1945 | index = reader_getInt (&s); | |
1946 | } | |
1947 | else | |
1948 | { | |
1949 | index = -1; | |
1950 | } | |
1951 | ||
1952 | llassert (kind != KINVALID); | |
616915dd | 1953 | ue = uentry_undump (kind, loc, &s); |
28bf4b0b | 1954 | |
1955 | llassert (utab->nentries == index || index == -1); | |
616915dd | 1956 | |
1957 | if (uentry_isValid (ue)) | |
1958 | { | |
28bf4b0b | 1959 | int lastindex = utab->nentries; |
1960 | ue = usymtab_addEntryAlways (utab, ue); | |
3e3ec469 | 1961 | |
1962 | ||
1963 | # if 0 | |
1964 | if (uentry_isConstant (ue)) /*@i23! isPreProcessorMacro */ | |
1965 | { | |
1966 | cstring uname = uentry_getName (ue); | |
1967 | ||
1968 | /* Also check its a macro... */ | |
1969 | DPRINTF (("Installing: %s", uname)); | |
1970 | ||
1971 | cpphash_installMacro | |
1972 | (mstring_copy (cstring_toCharsSafe (uname)), | |
1973 | cstring_length (uname), | |
1974 | cpplib_createDefinition (message ("%s 255", uname), | |
1975 | loc, | |
1976 | FALSE, FALSE).defn, | |
1977 | cpphash_hashCode (cstring_toCharsSafe (uname), | |
1978 | cstring_length (uname), | |
1979 | CPP_HASHSIZE)); | |
1980 | ||
1981 | DPRINTF (("After install: %s", uname)); | |
1982 | } | |
1983 | # endif | |
1984 | ||
28bf4b0b | 1985 | if (utab->nentries != lastindex + 1) |
1986 | { | |
1987 | DPRINTF (("No add: %s", uentry_unparseFull (ue))); | |
1988 | BADBRANCH; | |
1989 | } | |
616915dd | 1990 | /*@-branchstate@*/ |
1991 | } | |
1992 | /*@=branchstate@*/ | |
1993 | ||
1994 | /* | |
1995 | ** now, any other names are the same uentry | |
1996 | */ | |
1997 | ||
1998 | while (*(s++) == '#') | |
1999 | { | |
28bf4b0b | 2000 | cstring name = cstring_fromCharsO (reader_getWord (&s)); |
616915dd | 2001 | uentry nue = uentry_nameCopy (name, ue); |
28bf4b0b | 2002 | /* |
2003 | DPRINTF (("Name copy: %s", uentry_unparseFull (nue))); | |
2004 | BADBRANCH; | |
2005 | */ | |
616915dd | 2006 | |
28bf4b0b | 2007 | usymtab_addEntryAlways (utab, nue); |
616915dd | 2008 | } |
2009 | ||
2010 | while ((c = *s) != '\0' && (c !='\n')) | |
2011 | { | |
2012 | if (c != ' ' || c != '\t') | |
2013 | { | |
2014 | llbuglit ("Junk in load file"); | |
2015 | } | |
2016 | ||
2017 | s++; | |
2018 | } | |
2019 | ||
2020 | nextiter: | |
28bf4b0b | 2021 | { |
2022 | s = reader_readLine (f, os, MAX_DUMP_LINE_LENGTH); | |
2023 | } | |
616915dd | 2024 | } |
2025 | ||
920a3797 | 2026 | /*DRL added 6/21/01 |
2027 | to handle reading of buffer overflow related constraints | |
2028 | */ | |
2029 | while (fgets (s, MAX_DUMP_LINE_LENGTH, f) != NULL | |
2030 | && *s == ';') | |
2031 | { | |
2032 | ; /* ignore ;-comments */ | |
2033 | } | |
35eea586 | 2034 | |
2035 | /*drl July 27 added this so that libraries without | |
2036 | buffer constraints would be handled correctly. | |
2037 | I'm trying to do this without breaking older libraries*/ | |
2038 | ||
2039 | /*check for "optional" start buffer constraints message*/ | |
6fcd0b1e | 2040 | |
2041 | if (mstring_equalPrefix (s, "start_Buffer_Constraints")) | |
35eea586 | 2042 | { |
6fcd0b1e | 2043 | (void) fgets (s, MAX_DUMP_LINE_LENGTH, f); |
35eea586 | 2044 | } |
920a3797 | 2045 | |
2046 | while (s != NULL && *s != ';') | |
2047 | { | |
2048 | constraintList preconditions; | |
2049 | constraintList postconditions; | |
2050 | ||
28bf4b0b | 2051 | cstring name = cstring_fromChars(reader_getWord(&s) ); |
920a3797 | 2052 | cstring temp; |
2053 | ue = usymtab_lookup ( name ); | |
2054 | ||
2055 | cstring_free(name); | |
2056 | ||
2057 | preconditions = constraintList_undefined; | |
2058 | postconditions = constraintList_undefined; | |
2059 | ||
2060 | if (!uentry_isValid(ue) ) | |
2061 | { | |
28bf4b0b | 2062 | llfatalbug ((message("Invalid uentry for %s library file may be corrupted", cstring_fromChars(s) ) )); |
920a3797 | 2063 | } |
2064 | s = fgets (os, MAX_DUMP_LINE_LENGTH, f); | |
2065 | ||
ccf0a4a8 | 2066 | temp = cstring_fromChars (reader_getWord(&s) ); |
920a3797 | 2067 | |
28bf4b0b | 2068 | if (cstring_compareLit (temp,"pre:") == 0 ) |
920a3797 | 2069 | { |
3814599d | 2070 | preconditions = constraintList_undump (f); |
920a3797 | 2071 | } |
28bf4b0b | 2072 | else |
2073 | { | |
2074 | if (cstring_compareLit (temp,"pre:EMPTY") != 0 ) | |
2075 | llfatalbug ((message("Error reading library file pre:EMPTY expected but got %s", temp ) )); | |
2076 | } | |
2077 | ||
920a3797 | 2078 | cstring_free(temp); |
2079 | ||
2080 | s = fgets (os, MAX_DUMP_LINE_LENGTH, f); | |
2081 | ||
28bf4b0b | 2082 | temp = cstring_fromChars(reader_getWord(&s) ); |
ccf0a4a8 | 2083 | if (cstring_compareLit (temp, "post:") == 0 ) |
920a3797 | 2084 | { |
3814599d | 2085 | postconditions = constraintList_undump (f); |
920a3797 | 2086 | } |
28bf4b0b | 2087 | else |
2088 | { | |
ccf0a4a8 | 2089 | if (cstring_compareLit (temp, "post:EMPTY") != 0 ) |
28bf4b0b | 2090 | llfatalbug ((message("Error reading library file post:EMPTY expected but got %s", temp ) )); |
2091 | } | |
2092 | ||
ccf0a4a8 | 2093 | cstring_free (temp); |
920a3797 | 2094 | |
3814599d | 2095 | uentry_setPreconditions (ue, functionConstraint_createBufferConstraint (preconditions)); |
2096 | uentry_setPostconditions (ue, functionConstraint_createBufferConstraint (postconditions)); | |
920a3797 | 2097 | |
2098 | s = fgets (os, MAX_DUMP_LINE_LENGTH, f); | |
2099 | } | |
2100 | ||
616915dd | 2101 | dbgload = FALSE; |
2102 | sfree (os); | |
2103 | } | |
2104 | ||
2105 | /* | |
2106 | ** file scope for static variables | |
2107 | */ | |
2108 | ||
2109 | void | |
2110 | usymtab_enterFile () | |
2111 | /*@globals utab, globtab, filetab@*/ | |
2112 | /*@modifies filetab@*/ | |
2113 | { | |
2114 | llassert (utab == globtab); | |
2115 | ||
2116 | # if 0 | |
2117 | /* check globals */ | |
2118 | ||
2119 | usymtab_entries (globtab, ue) | |
2120 | { | |
2121 | if (sRef_hasDerived (uentry_getSref (ue))) | |
2122 | { | |
80489f0a | 2123 | fprintf (g_warningstream, "Derived Global: %s\n", uentry_unparse (ue)); |
2124 | fprintf (g_warningstream, "sRef: %s\n", sRef_unparseFull (ue->sref)); | |
616915dd | 2125 | } |
2126 | } end_usymtab_entries ; | |
2127 | ||
2128 | # endif | |
2129 | ||
2130 | usymtab_enterScope (); | |
2131 | filetab = utab; | |
2132 | } | |
2133 | ||
2134 | void | |
2135 | usymtab_exitFile () | |
2136 | /*@globals utab, filetab@*/ | |
2137 | /*@modifies filetab, utab@*/ | |
2138 | { | |
2139 | ||
2140 | llassert (utab->lexlevel == 1); | |
2141 | ||
2142 | usymtab_exitScope (exprNode_undefined); | |
2143 | filetab = NULL; | |
2144 | } | |
2145 | ||
2146 | void | |
2147 | usymtab_enterScope () | |
2148 | /*@globals utab, globtab, filetab@*/ | |
2149 | /*@modifies utab@*/ | |
2150 | { | |
2151 | usymtab t = usymtab_create (US_NORMAL, utab, TRUE); | |
2152 | ||
2153 | /* unconditional scope: optimize to avoid copy */ | |
2154 | t->aliases = aliasTable_copy (utab->aliases); | |
2155 | utab = t; | |
2156 | ||
2157 | llassert (usymtab_isDefined (t->env)); | |
2158 | ||
2159 | if (t->env->lexlevel == paramsScope && context_inFunctionLike ()) | |
2160 | { | |
2161 | noshadowerror = TRUE; | |
2162 | usymtab_handleParams (); | |
2163 | noshadowerror = FALSE; | |
2164 | } | |
2165 | } | |
2166 | ||
2167 | /* | |
2168 | ** setup external references: | |
2169 | ** o only, unique params alias external args | |
2170 | ** o other params may alias anything of their type | |
2171 | */ | |
2172 | ||
2173 | static void | |
2174 | usymtab_handleParams (void) | |
2175 | /*@globals utab, globtab, filetab@*/ | |
2176 | /*@modifies utab, globtab@*/ | |
2177 | { | |
2178 | usymtab ptab = utab->env; | |
2179 | uentry fcn = context_getHeader (); | |
2180 | ||
616915dd | 2181 | usymtab_entries (ptab, param) |
2182 | { | |
2183 | uentry ue; | |
2184 | ||
2185 | if (!uentry_isYield (param)) | |
2186 | { | |
2187 | sRef uref; | |
2188 | sRef pref = uentry_getSref (param); | |
616915dd | 2189 | |
28bf4b0b | 2190 | /* Could be a global. */ |
616915dd | 2191 | |
28bf4b0b | 2192 | if (uentry_isAnyParam (param)) |
2193 | { | |
2194 | ue = uentry_makeVariable (fixParamName (uentry_rawName (param)), | |
2195 | uentry_getType (param), | |
2196 | fileloc_copy (uentry_whereDeclared (param)), | |
2197 | FALSE); | |
2198 | ||
2199 | uentry_copyState (ue, param); | |
2200 | uentry_setRefParam (ue); | |
2201 | ||
2202 | ue = usymtab_supEntrySrefReturn (ue); | |
2203 | ||
2204 | /* must be after supercede! */ | |
2205 | ||
2206 | if (!sRef_stateKnown (pref)) | |
616915dd | 2207 | { |
28bf4b0b | 2208 | uentry_setDefState (ue, SS_DEFINED); |
2209 | uentry_setDefState (param, SS_DEFINED); | |
616915dd | 2210 | } |
2211 | else | |
2212 | { | |
28bf4b0b | 2213 | if (sRef_isStateSpecial (pref)) |
2214 | { | |
3e3ec469 | 2215 | uentry_setDefState (ue, SS_SPECIAL); /* ALLOCATED); */ |
2216 | /* evans 2002-01-01: should be unnecessary, the pre clauses | |
2217 | ** set the state if necessary. | |
2218 | */ | |
28bf4b0b | 2219 | } |
2220 | else | |
2221 | { | |
2222 | uentry_setDefState (ue, sRef_getDefState (pref)); | |
2223 | } | |
616915dd | 2224 | } |
28bf4b0b | 2225 | |
2226 | uref = uentry_getSref (ue); | |
2227 | ||
2228 | if (sRef_isStack (uref)) | |
616915dd | 2229 | { |
28bf4b0b | 2230 | alkind pkind = sRef_getAliasKind (pref); |
2231 | ||
2232 | if (alkind_isKnown (pkind) && !alkind_isLocal (pkind) | |
2233 | && !alkind_isStack (pkind)) | |
616915dd | 2234 | { |
28bf4b0b | 2235 | sRef_setAliasKind (uref, pkind, fileloc_undefined); |
2236 | sRef_setOrigAliasKind (uref, pkind); | |
616915dd | 2237 | } |
2238 | else | |
2239 | { | |
28bf4b0b | 2240 | sRef_setAliasKind (uref, AK_IMPTEMP, fileloc_undefined); |
2241 | sRef_setOrigAliasKind (uref, AK_IMPTEMP); | |
2242 | ||
2243 | if (uentry_isOut (param)) | |
2244 | { | |
2245 | ; | |
2246 | } | |
2247 | else | |
2248 | { | |
2249 | sRef_setDefined (uref, fileloc_undefined); | |
2250 | } | |
616915dd | 2251 | } |
28bf4b0b | 2252 | |
616915dd | 2253 | } |
28bf4b0b | 2254 | |
2255 | usymtab_addMustAlias (uref, pref); | |
2256 | ||
2257 | if (!(uentry_isOnly (param) || uentry_isUnique (param))) | |
2258 | { | |
2259 | /* | |
2260 | ** This is needed for detecting possibly aliased parameters. | |
2261 | */ | |
616915dd | 2262 | |
28bf4b0b | 2263 | sRef s = sRef_makeExternal (uref); |
2264 | usymtab_addMustAlias (uref, s); | |
2265 | } | |
2266 | ||
2267 | if (sRef_isKillRef (pref)) | |
2268 | { | |
2269 | sRef_setAliasKind (uref, AK_NEWREF, fileloc_undefined); | |
2270 | sRef_setOrigAliasKind (uref, AK_KILLREF); | |
2271 | } | |
2272 | else if (sRef_isRefCounted (uref)) | |
2273 | { | |
2274 | sRef_setOrigAliasKind (uref, AK_REFCOUNTED); | |
2275 | } | |
2276 | else | |
2277 | { | |
2278 | /* was AK_UNIQUE */ | |
2279 | sRef_setOrigAliasKind (uref, AK_LOCAL); | |
2280 | } | |
616915dd | 2281 | } |
2282 | else | |
2283 | { | |
616915dd | 2284 | } |
2285 | } | |
616915dd | 2286 | } end_usymtab_entries; |
28bf4b0b | 2287 | |
2288 | ||
2289 | if (uentry_hasStateClauseList (fcn)) | |
616915dd | 2290 | { |
28bf4b0b | 2291 | stateClauseList clauses = uentry_getStateClauseList (fcn); |
2292 | ||
2293 | stateClauseList_preElements (clauses, cl) | |
616915dd | 2294 | { |
28bf4b0b | 2295 | fileloc loc = stateClause_loc (cl); |
2296 | sRefSet osrs = sRefSet_undefined; | |
2297 | sRefSet srs; | |
616915dd | 2298 | |
28bf4b0b | 2299 | if (stateClause_isGlobal (cl)) |
2300 | { | |
2301 | DPRINTF (("Global Marker: %s", | |
2302 | sRef_unparseFull (usymtab_lookupGlobalMarker ()))); | |
2303 | llassert (sRef_isGlobalMarker (usymtab_lookupGlobalMarker ())); | |
2304 | srs = sRefSet_single (usymtab_lookupGlobalMarker ()); | |
2305 | osrs = srs; | |
2306 | } | |
2307 | else | |
2308 | { | |
2309 | srs = stateClause_getRefs (cl); | |
2310 | } | |
2311 | ||
2312 | sRefSet_elements (srs, el) | |
616915dd | 2313 | { |
2314 | sRef base = sRef_getRootBase (el); | |
28bf4b0b | 2315 | sRef sb = sRef_updateSref (el); |
2316 | ||
616915dd | 2317 | if (sRef_isResult (base)) |
2318 | { | |
2319 | ; /* nothing to do before */ | |
2320 | } | |
28bf4b0b | 2321 | else if (sRef_isParam (base) || sRef_isGlobalMarker (base)) |
616915dd | 2322 | { |
28bf4b0b | 2323 | if (stateClause_setsMetaState (cl)) |
616915dd | 2324 | { |
28bf4b0b | 2325 | /* copied from exprNode.c:3040 */ |
2326 | qual ql = stateClause_getMetaQual (cl); | |
2327 | annotationInfo ainfo = qual_getAnnotationInfo (ql); | |
2328 | metaStateInfo minfo = annotationInfo_getState (ainfo); | |
2329 | cstring key = metaStateInfo_getName (minfo); | |
2330 | int mvalue = annotationInfo_getValue (ainfo); | |
616915dd | 2331 | |
28bf4b0b | 2332 | DPRINTF (("Sets meta state! %s", stateClause_unparse (cl))); |
2333 | ||
2334 | if (sRef_isResult (base)) | |
616915dd | 2335 | { |
28bf4b0b | 2336 | BADBRANCH; |
2337 | } | |
2338 | else | |
2339 | { | |
2340 | sRef_setMetaStateValueComplete (sb, key, mvalue, loc); | |
2341 | } | |
2342 | } | |
2343 | else | |
2344 | { | |
2345 | sRefMod modf = stateClause_getEntryFunction (cl); | |
2346 | ||
2347 | if (modf != NULL) | |
2348 | { | |
2349 | sRefSet aliases = usymtab_allAliases (sb); | |
2350 | ||
2351 | modf (sb, loc); | |
2352 | ||
2353 | sRefSet_elements (aliases, sr) | |
2354 | { | |
2355 | modf (sr, loc); | |
2356 | } end_sRefSet_elements ; | |
2357 | ||
2358 | sRefSet_free (aliases); | |
2359 | } | |
616915dd | 2360 | } |
2361 | } | |
2362 | else | |
2363 | { | |
2364 | if (sRef_isValid (base)) | |
2365 | { | |
28bf4b0b | 2366 | DPRINTF (("Base: %s", sRef_unparseFull (base))); |
616915dd | 2367 | BADBRANCH; |
2368 | } | |
2369 | } | |
2370 | } end_sRefSet_elements ; | |
28bf4b0b | 2371 | } end_stateClauseList_preElements ; |
2372 | } | |
2373 | } | |
2374 | ||
616915dd | 2375 | void |
2376 | usymtab_enterFunctionScope (uentry fcn) | |
2377 | /*@globals utab, filetab, globtab@*/ | |
2378 | /*@modifies utab@*/ | |
2379 | { | |
2380 | usymtab t = usymtab_create (US_NORMAL, utab, TRUE); | |
2381 | ||
6483a926 | 2382 | DPRINTF (("Enter function: %s", uentry_unparse (fcn))); |
2383 | ||
616915dd | 2384 | if (utab->lexlevel != fileScope) |
2385 | { | |
2386 | if (utab->lexlevel > fileScope) | |
2387 | { | |
7ebcc5bb | 2388 | llparseerror (cstring_makeLiteral ("New function scope inside function")); |
616915dd | 2389 | |
2390 | while (utab->lexlevel > fileScope) | |
2391 | { | |
2392 | /*@i@*/ utab = usymtab_dropEnv (utab); | |
2393 | /*@-branchstate@*/ | |
2394 | } | |
2395 | /*@=branchstate@*/ | |
2396 | } | |
2397 | else | |
2398 | { | |
2399 | llfatalbug (cstring_makeLiteral ("New function not inside file.")); | |
2400 | } | |
2401 | /*@-branchstate@*/ } /*@=branchstate@*/ | |
2402 | ||
28bf4b0b | 2403 | utab = t; |
2404 | ||
2405 | DPRINTF (("Globs: %s", globSet_unparse (uentry_getGlobs (fcn)))); | |
2406 | ||
616915dd | 2407 | globSet_allElements (uentry_getGlobs (fcn), el) |
2408 | { | |
28bf4b0b | 2409 | DPRINTF (("Here we go: %s", sRef_unparseFull (el))); |
616915dd | 2410 | |
2411 | if (sRef_isUndefGlob (el)) | |
2412 | { | |
b73d1009 | 2413 | usymId index = sRef_getScopeIndex (el); |
616915dd | 2414 | sRef sr = sRef_updateSref (el); |
2415 | fileloc loc = uentry_whereEarliest (fcn); | |
28bf4b0b | 2416 | |
2417 | DPRINTF (("update: %s", sRef_unparseFull (sr))); | |
2418 | DPRINTF (("Undef!")); | |
616915dd | 2419 | if (sRef_isFileStatic (el)) |
2420 | { | |
2421 | ctype ct = sRef_getType (el); | |
2422 | uentry ue; | |
2423 | ||
2424 | llassert (usymtab_isDefined (filetab)); | |
2425 | ||
2426 | ue = usymtab_fetchIndex (filetab, index); | |
2427 | ||
2428 | if (ctype_isRealArray (ct) || ctype_isRealSU (ct)) | |
2429 | { | |
2430 | sRef_setAllocated (sr, loc); | |
2431 | } | |
2432 | else | |
2433 | { | |
2434 | sRef_setUndefined (sr, loc); | |
2435 | } | |
2436 | } | |
2437 | else | |
2438 | { | |
2439 | uentry ue = globtab->entries[index]; | |
2440 | ctype ct = uentry_getType (ue); | |
2441 | ||
2442 | if (ctype_isArray (ct) || ctype_isSU (ct)) | |
2443 | { | |
2444 | sRef_setAllocated (sr, loc); | |
2445 | } | |
2446 | else | |
2447 | { | |
2448 | sRef_setUndefined (sr, loc); | |
2449 | } | |
2450 | } | |
2451 | } | |
2452 | else if (sRef_isAllocated (el)) | |
2453 | { | |
2454 | sRef sr = sRef_updateSref (el); | |
2455 | fileloc loc = uentry_whereEarliest (fcn); | |
2456 | ||
2457 | sRef_setAllocated (sr, loc); | |
2458 | } | |
2459 | else if (sRef_isPartial (el)) | |
2460 | { | |
2461 | sRef sr = sRef_updateSref (el); | |
2462 | fileloc loc = uentry_whereEarliest (fcn); | |
2463 | ||
2464 | sRef_setPartial (sr, loc); | |
2465 | } | |
2466 | else | |
2467 | { | |
28bf4b0b | 2468 | /* |
2469 | sRef sr = sRef_updateSref (el); | |
2470 | fileloc loc = uentry_whereEarliest (fcn); | |
2471 | ||
2472 | sRef_setDefined (sr, loc); | |
2473 | */ | |
2474 | ||
2475 | /* defined */ | |
2476 | /* shouldn't need to do anything! */ | |
616915dd | 2477 | } |
2478 | } end_globSet_allElements; | |
2479 | ||
28bf4b0b | 2480 | DPRINTF (("Globs after: %s", globSet_unparse (uentry_getGlobs (fcn)))); |
6483a926 | 2481 | # ifdef DEBUGSPLINT |
2482 | usymtab_checkAllValid (); | |
2483 | # endif | |
616915dd | 2484 | } |
2485 | ||
2486 | static void | |
2487 | usymtab_caseBranch (void) | |
2488 | /*@modifies utab@*/ | |
2489 | { | |
2490 | usymtab t = usymtab_create (US_CBRANCH, utab, FALSE); | |
2491 | utab = t; | |
2492 | } | |
2493 | ||
2494 | void | |
2495 | usymtab_switchBranch (/*@unused@*/ exprNode s) | |
2496 | /*@modifies utab@*/ | |
2497 | { | |
2498 | usymtab t = usymtab_create (US_SWITCH, utab, FALSE); | |
2499 | ||
2500 | t->aliases = aliasTable_copy (utab->aliases); | |
28bf4b0b | 2501 | utab = t; |
616915dd | 2502 | } |
2503 | ||
2504 | void | |
2505 | usymtab_trueBranch (/*@only@*/ guardSet guards) | |
2506 | /*@modifies utab@*/ | |
2507 | { | |
2508 | usymtab t = usymtab_create (US_TBRANCH, utab, FALSE); | |
2509 | ||
2510 | /* | |
2511 | ** not true! (could be in a macro) | |
2512 | ** | |
2513 | ** llassertprint (utab->lexlevel > paramsScope, | |
2514 | ** ("not in scope: %s", usymtab_unparseLocal ())); | |
2515 | ** | |
2516 | */ | |
2517 | ||
2518 | guardSet_free (t->guards); | |
2519 | t->guards = guards; | |
28bf4b0b | 2520 | |
2521 | aliasTable_free (t->aliases); | |
616915dd | 2522 | t->aliases = aliasTable_copy (utab->aliases); |
2523 | ||
28bf4b0b | 2524 | utab = t; |
616915dd | 2525 | } |
2526 | ||
2527 | /* | |
2528 | ** consider, | |
2529 | ** | |
2530 | ** { int a; if (...) a = 3; < a may be undefined here! | |
2531 | ** | |
2532 | */ | |
2533 | ||
2534 | void | |
28bf4b0b | 2535 | usymtab_popTrueBranch (exprNode pred, exprNode expr, clause cl) /*@modifies utab@*/ |
616915dd | 2536 | { |
2537 | /* | |
2538 | ** add a false branch | |
2539 | ** (could be done more efficiently as a special case, but | |
2540 | ** it is better to only maintain one version of the code) | |
2541 | */ | |
2542 | ||
28bf4b0b | 2543 | if (utab->kind != US_TBRANCH |
2544 | && context_inIterDef ()) | |
2545 | { | |
2546 | usymtab_exitScope (expr); | |
2547 | } | |
2548 | else | |
2549 | { | |
2550 | DPRINTF (("pop true branch..")); | |
2551 | usymtab_altBranch (guardSet_invert (exprNode_getGuards (pred))); | |
2552 | usymtab_popBranches (pred, expr, exprNode_undefined, TRUE, cl); | |
2553 | } | |
616915dd | 2554 | } |
2555 | ||
2556 | void | |
2557 | usymtab_popCaseBranch () /*@modifies utab@*/ | |
2558 | { | |
2559 | llassert (utab->kind == US_CBRANCH); | |
2560 | usymtab_quietPlainExitScope (); | |
2561 | } | |
2562 | ||
2563 | void | |
2564 | usymtab_popTrueExecBranch (exprNode pred, exprNode expr, clause cl) | |
2565 | { | |
2566 | /* | |
2567 | ** add a false branch that must return --- that is, | |
2568 | ** the true branch is always executed! | |
2569 | */ | |
2570 | ||
2571 | usymtab_altBranch (guardSet_invert (exprNode_getGuards (pred))); | |
2572 | usymtab_popBranches (pred, expr, exprNode_makeMustExit (), FALSE, cl); | |
2573 | } | |
2574 | ||
2575 | void | |
2576 | usymtab_popOrBranch (exprNode pred, exprNode expr) | |
2577 | /*@modifies utab@*/ | |
2578 | { | |
2579 | bool mustReturn; | |
2580 | usymtab env = utab->env; | |
2581 | usymtab otab = utab; | |
2582 | int i = 0; | |
2583 | ||
2584 | llassert (env != NULL); | |
2585 | ||
2586 | if (exprNode_isError (expr)) | |
2587 | { | |
2588 | mustReturn = FALSE; | |
2589 | } | |
2590 | else | |
2591 | { | |
2592 | mustReturn = exprNode_mustEscape (expr); | |
2593 | } | |
2594 | ||
2595 | ||
2596 | llassert (utab->kind == US_TBRANCH); | |
2597 | ||
2598 | /* | |
2599 | ** merge each entry in table with its original | |
2600 | ** unless execution cannot continue after this branch | |
2601 | */ | |
2602 | ||
2603 | for (i = 0; i < utab->nentries; i++) | |
2604 | { | |
2605 | uentry current = utab->entries[i]; | |
2606 | uentry old = usymtab_lookupAux (env, uentry_rawName (current)); | |
2607 | ||
2608 | uentry_mergeState (old, current, exprNode_loc (expr), | |
2609 | mustReturn, FALSE, TRUE, ORCLAUSE); | |
2610 | } | |
2611 | ||
2612 | ||
2613 | if (mustReturn) | |
2614 | { | |
2615 | env->guards = guardSet_levelUnionFree (env->guards, | |
2616 | guardSet_invert (exprNode_getGuards (pred)), | |
2617 | env->lexlevel); | |
2618 | } | |
2619 | else | |
2620 | { | |
2621 | env->aliases = aliasTable_levelUnion (env->aliases, otab->aliases, env->lexlevel); | |
2622 | } | |
2623 | ||
2624 | /* env is now utab */ | |
2625 | usymtab_quietPlainExitScope (); | |
2626 | } | |
2627 | ||
2628 | /* | |
2629 | ** case syntax in C is very unrestricted. This is unfortunate. | |
2630 | ** | |
2631 | ** A switch case is ended either by a new case or default, or | |
2632 | ** a close } that may close the switch or some other control | |
2633 | ** structure. | |
2634 | */ | |
2635 | ||
2636 | bool | |
2637 | usymtab_newCase (/*@unused@*/ exprNode pred, exprNode last) | |
2638 | /*@modifies utab@*/ | |
2639 | { | |
2640 | bool mustBreak = usymtab_mustBreak (utab); | |
2641 | bool mustReturn = usymtab_mustEscape (utab); | |
2642 | usymtab stab = utab; | |
2643 | ||
7ac543fa | 2644 | DPRINTF (("New case!")); |
2645 | ||
616915dd | 2646 | /* |
2647 | ** Find last case (or outer switch) | |
2648 | */ | |
2649 | ||
2650 | while (stab->kind != US_CBRANCH && stab->kind != US_SWITCH) | |
2651 | { | |
2652 | stab = stab->env; | |
2653 | llassert (stab != GLOBAL_ENV); | |
2654 | } | |
7ac543fa | 2655 | |
616915dd | 2656 | while (stab->kind == US_CBRANCH) |
2657 | { | |
2658 | stab = stab->env; | |
2659 | llassert (stab != GLOBAL_ENV); | |
2660 | } | |
2661 | ||
2662 | /* | |
2663 | ** if its a fall through case, merge in outside entries and last case. | |
2664 | ** | |
2665 | ** e.g., | |
2666 | ** ... | |
2667 | ** switch | |
2668 | ** case 1: x = 3; <fall through> | |
2669 | ** case 2: << x may not be defined | |
2670 | ** | |
2671 | */ | |
2672 | ||
2673 | if (!mustBreak && !mustReturn && utab->kind == US_CBRANCH) | |
2674 | { | |
2675 | llassert (stab->kind == US_SWITCH || stab->kind == US_NORMAL); | |
2676 | ||
2677 | usymtab_entries (utab, ue) /* but, keep track of used variables */ | |
2678 | { | |
2679 | uentry old = usymtab_lookupAux (stab, uentry_rawName (ue)); | |
2680 | ||
2681 | llassert (uentry_isValid (old)); | |
2682 | ||
2683 | /* modifies ue, not old */ | |
2684 | ||
2685 | uentry_mergeState (ue, old, exprNode_loc (last), | |
2686 | FALSE, FALSE, TRUE, CASECLAUSE); | |
2687 | } end_usymtab_entries; | |
2688 | ||
2689 | utab->aliases = aliasTable_levelUnion (utab->aliases, | |
2690 | stab->aliases, utab->lexlevel); | |
2691 | ||
2692 | /* | |
2693 | ** No need for a new branch. | |
2694 | */ | |
2695 | ||
2696 | return FALSE; | |
2697 | } | |
2698 | else | |
2699 | { | |
2700 | usymtab_caseBranch (); | |
2701 | /*@-mustfree@*/ /*< utab->aliases >*/ | |
2702 | utab->aliases = aliasTable_copy (stab->aliases); | |
2703 | /*@=mustfree@*/ | |
2704 | ||
2705 | return TRUE; | |
2706 | } | |
2707 | } | |
2708 | ||
2709 | /* | |
2710 | ** for && (both pred and expr are executed) | |
2711 | */ | |
2712 | ||
2713 | void | |
2714 | usymtab_popAndBranch (exprNode pred, /*@unused@*/ exprNode expr) | |
2715 | /*@modifies utab@*/ | |
2716 | { | |
2717 | usymtab env = utab->env; | |
2718 | usymtab otab= utab; | |
2719 | int i = 0; | |
2720 | ||
28bf4b0b | 2721 | llassert (utab->kind == US_TBRANCH); |
616915dd | 2722 | |
2723 | /* | |
2724 | ** merge each entry in table with its original | |
2725 | ** unless execution cannot continue after this branch | |
2726 | */ | |
2727 | ||
2728 | for (i = 0; i < utab->nentries; i++) | |
2729 | { | |
2730 | uentry current = utab->entries[i]; | |
2731 | sRef tref = uentry_getSref (current); | |
2732 | uentry old = usymtab_lookupAux (env, uentry_rawName (current)); | |
2733 | sRef oref = uentry_getSref (old); | |
2734 | ||
2735 | /* note that is current is in a nested branch, | |
2736 | it may create a "new" old entry. */ | |
2737 | ||
2738 | llassert (uentry_isValid (old)); | |
2739 | uentry_mergeState (old, current, exprNode_loc (expr), | |
2740 | FALSE, FALSE, TRUE, ANDCLAUSE); | |
2741 | ||
2742 | /* | |
2743 | ** if is it defined by the second clause, then it should be defined. | |
2744 | */ | |
2745 | ||
2746 | if (sRef_isAnyDefined (tref) | |
2747 | && (sRef_isAllocated (oref) || sRef_isStateUndefined (oref))) | |
2748 | { | |
2749 | sRef_setDefined (oref, g_currentloc); | |
2750 | } | |
2751 | } | |
2752 | ||
2753 | utab->guards = guardSet_levelUnionFree (utab->guards, | |
2754 | guardSet_invert (exprNode_getGuards (pred)), | |
2755 | utab->lexlevel); | |
2756 | utab->aliases = aliasTable_levelUnion (utab->aliases, otab->aliases, utab->lexlevel); | |
2757 | ||
2758 | usymtab_quietPlainExitScope (); | |
2759 | ||
2760 | } | |
2761 | ||
2762 | /* | |
2763 | ** Stack should be [ US_CBRANCH+ US_SWITCH ] | |
2764 | ** Only branches which do not return (except possibly the last branch) are included. | |
2765 | ** | |
2766 | ** Conditionally merge state from all CBRANCHes. | |
2767 | ** | |
2768 | ** If allpaths is TRUE, then all possible executions go through some switch | |
2769 | ** case, and the original scope is not merged. | |
2770 | */ | |
2771 | ||
2772 | void | |
2773 | usymtab_exitSwitch (/*@unused@*/ exprNode sw, bool allpaths) | |
2774 | /*@modifies utab@*/ | |
2775 | { | |
2776 | usymtab ttab = utab; | |
2777 | usymtab stab = ttab; | |
2778 | usymtab ltab = ttab; | |
2779 | bool lastMustReturn = usymtab_mustEscape (utab); | |
2780 | int i; | |
2781 | ||
2782 | ||
2783 | while (stab->kind == US_CBRANCH) | |
2784 | { | |
2785 | stab = stab->env; | |
2786 | llassert (stab != GLOBAL_ENV); | |
2787 | } | |
2788 | ||
2789 | while (stab->kind == US_NORMAL) | |
2790 | { | |
2791 | stab = stab->env; | |
2792 | llassert (stab != GLOBAL_ENV); | |
2793 | } | |
2794 | ||
2795 | llassert (stab->kind == US_SWITCH); | |
2796 | ||
2797 | /* go to the scope outside the switch (US_SWITCH is just a marker! */ | |
2798 | stab = stab->env; | |
2799 | llassert (stab != GLOBAL_ENV); | |
2800 | ||
2801 | ||
2802 | ttab = ttab->env; | |
2803 | llassert (usymtab_isDefined (ttab)); | |
2804 | ||
2805 | if (ttab->kind == US_CBRANCH) | |
2806 | { | |
2807 | /* was quietPlainExitScope --- but, can't free it yet! */ | |
2808 | utab = utab->env; | |
2809 | llassert (utab != GLOBAL_ENV); | |
2810 | ||
2811 | while (ttab->kind == US_CBRANCH) | |
2812 | { | |
2813 | /* | |
2814 | ** (from popTrueBranch) | |
2815 | */ | |
2816 | ||
2817 | bool mustReturn = usymtab_mustEscape (ttab); | |
2818 | bool mustBreak = usymtab_mustBreak (ttab); | |
2819 | ||
2820 | usymtab_entries (ttab, current) | |
2821 | { | |
2822 | uentry old = /*@-compmempass@*/ usymtab_lookupAux (ltab, uentry_rawName (current)); | |
2823 | /*@=compmempass@*/ | |
2824 | ||
2825 | /* | |
2826 | ** note that is this is in a nested branch, | |
2827 | ** it may create a "new" old entry. | |
2828 | */ | |
2829 | ||
2830 | if (uentry_isValid (old)) | |
2831 | { | |
2832 | if (lastMustReturn) | |
2833 | { | |
2834 | uentry_mergeUses (current, old); | |
2835 | uentry_setState (old, current); | |
2836 | } | |
2837 | else | |
2838 | { | |
2839 | uentry_mergeState (old, current, exprNode_loc (sw), | |
2840 | mustReturn, FALSE, TRUE, SWITCHCLAUSE); | |
2841 | } | |
2842 | } | |
2843 | else | |
2844 | { | |
2845 | ; | |
2846 | } | |
2847 | } end_usymtab_entries; | |
2848 | ||
2849 | /* | |
2850 | ** if entry is not in symbol table for this case, merge with pre-switch | |
2851 | ** table | |
2852 | */ | |
2853 | ||
2854 | if (!mustReturn && !mustBreak) | |
2855 | { | |
2856 | usymtab_entries (stab, current) | |
2857 | { | |
b73d1009 | 2858 | if (!usymtab_indexFound (usymtab_getIndex (ttab, uentry_rawName (current)))) |
616915dd | 2859 | { |
2860 | uentry old = /*@-compmempass@*/ | |
2861 | usymtab_lookupAux (ltab, uentry_rawName (current)); | |
2862 | /*@=compmempass@*/ | |
2863 | ||
2864 | llassert (uentry_isValid (old)); | |
2865 | uentry_mergeState (old, current, exprNode_loc (sw), | |
2866 | FALSE, FALSE, TRUE, SWITCHCLAUSE); | |
2867 | } | |
2868 | } end_usymtab_entries; | |
2869 | } | |
2870 | ||
2871 | ltab->env = ttab->env; | |
2872 | ttab = ltab->env; | |
2873 | ||
2874 | /* | |
2875 | ** Suprious error, becuase of environments. | |
2876 | */ | |
2877 | ||
2878 | /*@i1@*/ utab = ltab; | |
2879 | ||
2880 | lastMustReturn = FALSE; | |
2881 | /*@-branchstate@*/ | |
2882 | } | |
2883 | } | |
2884 | /*@=branchstate@*/ | |
2885 | ||
2886 | /* | |
2887 | ** now, there is one US_CBRANCH. Merge this with the stab. | |
2888 | */ | |
2889 | ||
2890 | ||
2891 | for (i = 0; i < ltab->nentries; i++) | |
2892 | { | |
2893 | uentry current = ltab->entries[i]; | |
2894 | uentry old = usymtab_lookupAux (stab, uentry_rawName (current)); | |
2895 | ||
2896 | /* note that is this is in a nested branch, | |
2897 | it may create a "new" old entry. */ | |
2898 | ||
2899 | ||
2900 | if (uentry_isValid (old)) | |
2901 | { | |
2902 | if (allpaths) | |
2903 | { | |
2904 | uentry_mergeUses (current, old); | |
2905 | uentry_setState (old, current); | |
2906 | } | |
2907 | else | |
2908 | { | |
2909 | uentry_mergeState (old, current, exprNode_loc (sw), | |
2910 | FALSE, FALSE, TRUE, SWITCHCLAUSE); | |
2911 | } | |
2912 | } | |
2913 | else | |
2914 | { | |
2915 | } | |
2916 | } | |
2917 | ||
2918 | /* | |
2919 | ** exit the switch | |
2920 | */ | |
2921 | ||
2922 | ||
2923 | /* | |
2924 | ** switch may or may not be followed by a new scope | |
2925 | */ | |
2926 | ||
2927 | if (utab->kind == US_SWITCH) | |
2928 | { | |
2929 | usymtab_quietPlainExitScope (); | |
2930 | } | |
2931 | else | |
2932 | { | |
2933 | usymtab_quietPlainExitScope (); | |
2934 | llassert (utab->kind == US_SWITCH); | |
2935 | usymtab_quietPlainExitScope (); | |
2936 | } | |
2937 | ||
2938 | } | |
2939 | ||
2940 | static void | |
2941 | updateNullState (sRef el, /*@notnull@*/ usymtab ttab, | |
2942 | /*@notnull@*/ usymtab ftab, bool trueGuard) | |
2943 | { | |
2944 | sRef base = sRef_getRootBase (el); | |
28bf4b0b | 2945 | int level = sRef_lexLevel (base); |
616915dd | 2946 | |
2947 | if (sRef_isCvar (base)) | |
2948 | { | |
2949 | usymId index = sRef_getScopeIndex (base); | |
2950 | uentry ue = usymtab_getRefTab (ttab, level, index); | |
2951 | ||
2952 | if (!uentry_isLset (ue)) | |
2953 | { | |
2954 | sRef sr = uentry_getSref (ue); | |
2955 | ||
2956 | if (trueGuard) | |
2957 | { | |
2958 | sRef_setDerivNullState (sr, el, NS_NOTNULL); | |
2959 | } | |
2960 | else | |
2961 | { | |
2962 | if (!guardSet_isGuarded (ttab->guards, el) | |
2963 | && !sRef_isNotNull (sr)) | |
2964 | { | |
393e573f | 2965 | DPRINTF (("Here! %s / %s", |
2966 | sRef_unparseFull (sr), | |
2967 | sRef_unparseFull (el))); | |
616915dd | 2968 | sRef_setDerivNullState (sr, el, NS_DEFNULL); |
393e573f | 2969 | } |
616915dd | 2970 | } |
2971 | } | |
2972 | else | |
2973 | { | |
393e573f | 2974 | ; |
2975 | } | |
616915dd | 2976 | |
2977 | ue = usymtab_getRefTab (ftab, level, index); | |
2978 | ||
2979 | if (!uentry_isLset (ue)) | |
2980 | { | |
2981 | sRef sr = uentry_getSref (ue); | |
2982 | ||
616915dd | 2983 | if (!trueGuard) /* yikes! forgot the ! */ |
2984 | { | |
2985 | sRef_setDerivNullState (sr, el, NS_NOTNULL); | |
2986 | } | |
2987 | else | |
2988 | { | |
2989 | ||
2990 | if (!guardSet_isGuarded (ftab->guards, el) | |
2991 | && !sRef_isNotNull (sr)) | |
2992 | { | |
2993 | sRef_setDerivNullState (sr, el, NS_DEFNULL); | |
393e573f | 2994 | } |
616915dd | 2995 | } |
2996 | } | |
2997 | else | |
2998 | { | |
28bf4b0b | 2999 | ; |
3000 | } | |
3001 | } | |
3002 | } | |
616915dd | 3003 | |
3004 | void | |
3005 | usymtab_popBranches (exprNode pred, exprNode tbranch, exprNode fbranch, | |
3006 | bool isOpt, clause cl) | |
3007 | /*@modifies utab@*/ | |
3008 | { | |
3009 | int i = 0; | |
3010 | usymtab ftab = utab; | |
3011 | usymtab ttab = utab->env; | |
3012 | ||
3013 | fileloc loc; | |
3014 | usymtab env; | |
3015 | guardSet guards = exprNode_getGuards (pred); | |
3016 | sRefSet tguards = guardSet_getTrueGuards (guards); | |
3017 | sRefSet fguards = guardSet_getFalseGuards (guards); | |
3018 | bool mustReturnT = exprNode_mustEscape (tbranch); | |
3019 | bool mustReturnF = exprNode_mustEscape (fbranch); | |
28bf4b0b | 3020 | |
3021 | DPRINTF (("Pop branches: %s [mustreturn: %s/%s]", exprNode_unparse (pred), | |
3022 | bool_unparse (mustReturnT), | |
3023 | bool_unparse (mustReturnF))); | |
3024 | ||
616915dd | 3025 | if (exprNode_isDefined (fbranch)) |
3026 | { | |
3027 | loc = exprNode_loc (fbranch); | |
3028 | } | |
3029 | else | |
3030 | { | |
3031 | loc = exprNode_loc (tbranch); | |
3032 | } | |
3033 | ||
3034 | llassert (usymtab_isDefined (ttab)); | |
3035 | ||
3036 | env = ttab->env; | |
3037 | ||
3038 | llassert (usymtab_isDefined (env)); | |
3039 | llassert (ftab->kind == US_FBRANCH); | |
3040 | llassert (ttab->kind == US_TBRANCH); | |
3041 | ||
3042 | /* | |
3043 | ** For each element that is true guarded (i.e., if (x != NULL)) | |
3044 | ** make x = null in false branch, | |
3045 | ** and x = notnull in true branch. | |
3046 | ** unless x was set locally in that branch. | |
3047 | ** For each element that is false guarded (x == NULL) | |
3048 | ** make x = null in true, notnull in false. | |
3049 | ** | |
3050 | ** For each element that is either guarded (pred(x)) | |
3051 | ** | |
3052 | */ | |
3053 | ||
3054 | sRefSet_allElements (tguards, el) | |
3055 | { | |
3056 | updateNullState (el, ttab, ftab, TRUE); | |
3057 | } end_sRefSet_allElements; | |
3058 | ||
3059 | sRefSet_allElements (fguards, el) | |
3060 | { | |
3061 | updateNullState (el, ttab, ftab, FALSE); | |
3062 | } end_sRefSet_allElements; | |
3063 | ||
3064 | /* | |
3065 | ** | |
3066 | ** if an entry is in both true and false, merge the entries, | |
3067 | ** then replace original with new state. | |
3068 | ** | |
3069 | ** if an entry is in one table, merge it with the original. | |
3070 | */ | |
28bf4b0b | 3071 | |
3072 | DPRINTF (("ftab: %d", ftab->nentries)); | |
3073 | ||
616915dd | 3074 | for (i = 0; i < ftab->nentries; i++) |
3075 | { | |
3076 | uentry fthis = ftab->entries[i]; | |
3077 | uentry old = usymtab_lookupAux (env, uentry_rawName (fthis)); | |
b73d1009 | 3078 | usymId tindex = usymtab_getIndex (ttab, uentry_rawName (fthis)); |
616915dd | 3079 | |
28bf4b0b | 3080 | DPRINTF (("Entry: %s / %s", uentry_unparseFull (fthis), uentry_unparseFull (old))); |
3081 | ||
616915dd | 3082 | if (uentry_isUndefined (old)) |
3083 | { | |
3084 | /* possible entry was added as an undefined id */ | |
28bf4b0b | 3085 | DPRINTF (("Undefined! %s", uentry_rawName (fthis))); |
616915dd | 3086 | continue; |
3087 | } | |
3088 | ||
b73d1009 | 3089 | if (usymtab_indexFound (tindex)) |
616915dd | 3090 | { |
3091 | uentry tthis = ttab->entries[tindex]; | |
28bf4b0b | 3092 | |
616915dd | 3093 | /* note that is this is in a nested branch, |
3094 | it may create a "new" old entry. */ | |
3095 | ||
3096 | if (!mustReturnF) | |
3097 | { | |
3098 | if (!mustReturnT) | |
3099 | { | |
616915dd | 3100 | uentry_mergeState (fthis, tthis, loc, |
3101 | mustReturnT, FALSE, FALSE, cl); | |
3102 | } | |
3103 | else | |
3104 | { | |
3105 | uentry_mergeUses (fthis, tthis); | |
3106 | } | |
3107 | ||
3108 | uentry_setState (old, fthis); | |
3109 | ||
3110 | /*@-mustfree@*/ | |
3111 | } | |
3112 | /*@=mustfree@*/ | |
3113 | else | |
3114 | { | |
3115 | uentry_setState (old, tthis); | |
3116 | uentry_mergeState (old, fthis, loc, mustReturnF, | |
3117 | TRUE, FALSE, cl); | |
3118 | } | |
3119 | ||
3120 | ttab->entries[tindex] = uentry_undefined; | |
3121 | uentry_free (tthis); | |
3122 | } | |
3123 | else | |
3124 | { | |
3125 | uentry_mergeState (old, fthis, loc, mustReturnF, TRUE, FALSE, cl); | |
3126 | } | |
3127 | } | |
3128 | ||
3129 | for (i = 0; i < ttab->nentries; i++) | |
3130 | { | |
3131 | uentry current = ttab->entries[i]; | |
3132 | ||
28bf4b0b | 3133 | DPRINTF (("ttab: %s", uentry_unparseFull (current))); |
3134 | ||
616915dd | 3135 | if (!uentry_isUndefined (current)) |
3136 | { | |
3137 | uentry old = usymtab_lookupAux (env, uentry_rawName (current)); | |
3138 | ||
28bf4b0b | 3139 | DPRINTF (("Old: %s", uentry_unparseFull (old))); |
3140 | ||
3141 | if (uentry_isUndefined (old)) | |
3142 | { | |
3143 | llcontbug (message ("Undefined entry: %s", uentry_rawName (current))); | |
3144 | continue; | |
3145 | } | |
3146 | ||
616915dd | 3147 | if (mustReturnF) |
3148 | { | |
3149 | uentry_mergeUses (current, old); | |
3150 | uentry_setState (old, current); | |
3151 | } | |
3152 | else | |
3153 | { | |
3154 | /* | |
28bf4b0b | 3155 | ** Assumes false branch is a fall-through if |
616915dd | 3156 | ** fbranch is not defined. This is true, unless |
3157 | ** where was some greivous error in processing | |
3158 | ** the else branch of an if-then, in which case | |
3159 | ** this is probably the right thing to do anyway. | |
3160 | */ | |
3161 | ||
3162 | uentry_mergeState (old, current, loc, mustReturnT, | |
3163 | FALSE, isOpt, cl); | |
3164 | } | |
28bf4b0b | 3165 | |
3166 | DPRINTF (("==> %s", uentry_unparseFull (old))); | |
616915dd | 3167 | } |
3168 | } | |
616915dd | 3169 | |
3170 | /* | |
3171 | ** Plain levelUnion doesn't work, since we need to use the sRef's in env->aliases | |
3172 | ** if they are present. | |
3173 | */ | |
3174 | ||
3175 | llassert (NOALIAS (env->aliases, ttab->aliases)); | |
3176 | llassert (NOALIAS (env->aliases, ftab->aliases)); | |
3177 | ||
3178 | aliasTable_free (env->aliases); | |
3179 | ||
3180 | env->aliases = aliasTable_levelUnionNew (ttab->aliases, | |
3181 | ftab->aliases, env->lexlevel); | |
3182 | ||
3183 | aliasTable_fixSrefs (env->aliases); | |
28bf4b0b | 3184 | |
3185 | DPRINTF (("Aliases: %s", aliasTable_unparse (env->aliases))); | |
616915dd | 3186 | |
3187 | /* exit true and false scopes */ | |
3188 | usymtab_quietPlainExitScope (); | |
3189 | usymtab_quietPlainExitScope (); | |
3190 | ||
3191 | if (mustReturnT) | |
3192 | { | |
3193 | utab->guards = guardSet_levelUnionFree | |
3194 | (utab->guards, | |
3195 | guardSet_invert (exprNode_getGuards (pred)), | |
3196 | utab->lexlevel); | |
3197 | } | |
3198 | ||
3199 | if (mustReturnF) | |
3200 | { | |
3201 | utab->guards = guardSet_levelUnion (utab->guards, | |
3202 | exprNode_getGuards (pred), | |
3203 | utab->lexlevel); | |
3204 | } | |
3205 | ||
3206 | DPRINTF (("Here.")); | |
3207 | } | |
3208 | ||
3209 | static void usymtab_fixCases (void) /*@modifies utab@*/ { | |
3210 | while (utab->kind == US_CBRANCH) | |
3211 | { | |
3212 | usymtab_quietPlainExitScope (); | |
3213 | } | |
3214 | ||
3215 | llassert (utab->kind != US_CBRANCH); | |
3216 | } | |
3217 | ||
3218 | void | |
3219 | usymtab_altBranch (/*@only@*/ guardSet guards) | |
3220 | /*@modifies utab@*/ | |
3221 | { | |
28bf4b0b | 3222 | usymtab t; |
616915dd | 3223 | usymtab parent = utab->env; |
3224 | ||
28bf4b0b | 3225 | t = usymtab_create (US_FBRANCH, utab, FALSE); |
3226 | ||
616915dd | 3227 | /* |
3228 | ** If we are in a case, need to close it. The C syntax | |
3229 | ** is very liberal, so this kludge is necessary. | |
3230 | */ | |
3231 | ||
3232 | usymtab_fixCases (); | |
3233 | ||
3234 | DPRINTF (("Current kind: %s", usymtab_unparseStack ())); | |
28bf4b0b | 3235 | |
616915dd | 3236 | llassert (utab->kind == US_TBRANCH); |
3237 | llassert (parent != GLOBAL_ENV); | |
28bf4b0b | 3238 | |
616915dd | 3239 | guardSet_free (t->guards); |
3240 | t->guards = guards; | |
28bf4b0b | 3241 | |
616915dd | 3242 | aliasTable_free (t->aliases); |
3243 | t->aliases = aliasTable_copy (parent->aliases); | |
28bf4b0b | 3244 | |
616915dd | 3245 | utab = t; |
3246 | } | |
3247 | ||
3248 | void | |
3249 | usymtab_allDefined (void) | |
3250 | /*@globals utab, globtab@*/ | |
3251 | { | |
3252 | int i; | |
3253 | ||
3254 | llassert (utab == globtab); | |
3255 | ||
3256 | for (i = 0; i < utab->nentries; i++) | |
3257 | { | |
3258 | uentry e = utab->entries[i]; | |
3259 | ||
3260 | if (uentry_isPriv (e)) | |
3261 | { | |
3262 | ; /* no need to define it */ | |
3263 | } | |
3264 | else | |
3265 | { | |
3266 | if (context_getFlag (FLG_SPECUNDECL)) | |
3267 | { | |
3268 | fileloc sloc = uentry_whereSpecified (e); | |
3269 | fileloc dloc = uentry_whereDeclared (e); | |
3270 | ||
3271 | if (fileloc_isDefined (sloc) | |
3272 | && !uentry_isFakeTag (e) | |
3273 | && !fileloc_isDefined (dloc)) | |
3274 | { | |
3275 | voptgenerror | |
3276 | (FLG_SPECUNDECL, | |
3277 | message ("%s %q specified but not declared", | |
3278 | ekind_capName (uentry_getKind (e)), | |
3279 | uentry_getName (e)), | |
3280 | sloc); | |
3281 | } | |
3282 | } | |
3283 | ||
3284 | if (!uentry_isCodeDefined (e)) | |
3285 | { | |
3286 | fileloc dloc = uentry_whereDeclared (e); | |
3287 | ||
28bf4b0b | 3288 | if (fileloc_isLib (dloc) || fileloc_isXHFile (dloc)) |
616915dd | 3289 | { |
3290 | ; | |
3291 | } | |
3292 | else if (fileloc_isDefined (dloc)) | |
3293 | { | |
3294 | if (!uentry_isAnyTag (e)) | |
3295 | { | |
3296 | if (fileloc_isUser (dloc)) | |
3297 | { | |
3298 | voptgenerror | |
3299 | (FLG_DECLUNDEF, | |
3300 | message ("%s %q declared but not defined", | |
3301 | ekind_capName (uentry_getKind (e)), | |
3302 | uentry_getName (e)), | |
3303 | dloc); | |
efd360a3 | 3304 | DPRINTF (("decl: %s", uentry_unparseFull (e))); |
616915dd | 3305 | } |
3306 | } | |
3307 | } | |
3308 | else | |
3309 | { | |
3310 | fileloc sloc = uentry_whereSpecified (e); | |
3311 | ||
3312 | if (fileloc_isDefined (sloc) | |
3313 | && !fileloc_isImport (sloc) | |
3314 | && !fileloc_isLib (sloc) | |
3315 | && !fileloc_isPreproc (sloc) | |
3316 | && !uentry_isFakeTag (e)) | |
3317 | { | |
3318 | if (uentry_isVariable (e) || uentry_isFunction (e)) | |
3319 | { | |
3320 | voptgenerror | |
3321 | (FLG_SPECUNDEF, | |
3322 | message ("%s %q specified but not declared or defined", | |
3323 | ekind_capName (uentry_getKind (e)), | |
3324 | uentry_getName (e)), | |
3325 | sloc); | |
3326 | } | |
3327 | else | |
3328 | { | |
3329 | voptgenerror | |
3330 | (FLG_SPECUNDEF, | |
3331 | message ("%s %q specified but not defined", | |
3332 | ekind_capName (uentry_getKind (e)), | |
3333 | uentry_getName (e)), | |
3334 | sloc); | |
3335 | } | |
3336 | } | |
3337 | } | |
3338 | } | |
3339 | } | |
3340 | } | |
3341 | } | |
3342 | ||
3343 | void usymtab_exportHeader (void) | |
3344 | /*@globals utab@*/ | |
3345 | { | |
3346 | int i; | |
3347 | ||
3348 | for (i = 0; i < utab->nentries; i++) | |
3349 | { | |
3350 | uentry ce = utab->entries[i]; | |
3351 | ||
3352 | if (!uentry_isDatatype (ce) | |
3353 | && !uentry_isAnyTag (ce) | |
3354 | && !uentry_isEitherConstant (ce) && !uentry_isStatic (ce) | |
3355 | && !uentry_isExternal (ce) | |
3356 | && !uentry_isForward (ce)) | |
3357 | { | |
3358 | fileloc fwhere = uentry_whereDeclared (ce); | |
3359 | ||
3360 | if (fileloc_isUndefined (fwhere) | |
3361 | && uentry_isFunction (ce)) | |
3362 | { | |
3363 | fwhere = uentry_whereDefined (ce); | |
3364 | } | |
3365 | ||
3366 | if (fileloc_isDefined (fwhere) | |
3367 | && !fileloc_isHeader (fwhere) | |
28bf4b0b | 3368 | && !fileloc_isXHFile (fwhere) |
616915dd | 3369 | && !(fileloc_isSpecialFile (fwhere) |
3370 | && !context_getFlag (FLG_UNUSEDSPECIAL))) | |
3371 | { | |
3372 | if (uentry_isVariable (ce)) | |
3373 | { | |
3374 | if (optgenerror | |
3375 | (FLG_EXPORTHEADERVAR, | |
3376 | message ("%s %q exported but not declared in header file", | |
3377 | ekind_capName (uentry_getKind (ce)), | |
3378 | uentry_getName (ce)), | |
3379 | fwhere)) | |
3380 | { | |
3381 | uentry_showDefSpecInfo (ce, fwhere); | |
3382 | } | |
3383 | } | |
3384 | else | |
3385 | { | |
3386 | if (!uentry_isIter (ce) | |
3387 | && !uentry_isEndIter (ce) | |
3388 | && !uentry_isExpandedMacro (ce)) | |
3389 | { | |
3390 | if (uentry_isFunction (ce) | |
3391 | && cstring_equalLit (uentry_rawName (ce), "main")) | |
3392 | { | |
3393 | ; /* no error for main */ | |
3394 | } | |
3395 | else | |
3396 | { | |
3397 | if (optgenerror | |
3398 | (FLG_EXPORTHEADER, | |
3399 | message ("%s %q exported but not declared " | |
3400 | "in header file", | |
3401 | ekind_capName (uentry_getKind (ce)), | |
3402 | uentry_getName (ce)), | |
3403 | fwhere)) | |
3404 | { | |
3405 | uentry_showDefSpecInfo (ce, fwhere); | |
3406 | } | |
3407 | } | |
3408 | } | |
3409 | } | |
3410 | } | |
3411 | } | |
3412 | } | |
3413 | } | |
3414 | ||
3415 | void usymtab_exportLocal (void) | |
3416 | /*@globals utab@*/ | |
3417 | { | |
3418 | int i; | |
616915dd | 3419 | |
3420 | for (i = 0; i < utab->nentries; i++) | |
3421 | { | |
3422 | uentry ce = utab->entries[i]; | |
616915dd | 3423 | |
3424 | if (!uentry_isDatatype (ce) && !uentry_isAnyTag (ce) | |
3425 | && !uentry_isEitherConstant (ce) | |
3426 | && !uentry_isIter (ce) | |
3427 | && !uentry_isEndIter (ce) | |
3428 | && !uentry_isExpandedMacro (ce) | |
3429 | && uentry_isUsed (ce)) | |
3430 | { | |
3431 | /* check static uses */ | |
3432 | filelocList fuses = uentry_getUses (ce); | |
3433 | fileloc mod = uentry_whereDefined (ce); | |
3434 | bool ok = filelocList_isEmpty (fuses); | |
3435 | fileloc fwhere = uentry_whereDeclared (ce); | |
3436 | ||
3437 | if (fileloc_isSpecialFile (fwhere) | |
3438 | && !context_getFlag (FLG_UNUSEDSPECIAL)) | |
3439 | { | |
3440 | ok = TRUE; /* no errors for special files */ | |
3441 | } | |
3442 | else | |
3443 | { | |
3444 | filelocList_elements (fuses, uloc) | |
3445 | { | |
3446 | if (fileloc_isUndefined (uloc) || !fileloc_sameModule (uloc, mod)) | |
3447 | { | |
3448 | ok = TRUE; | |
3449 | /*@innerbreak@*/ break; | |
3450 | } | |
3451 | } end_filelocList_elements; | |
3452 | } | |
3453 | ||
3454 | if (!ok) | |
3455 | { | |
3456 | if (optgenerror | |
3457 | (FLG_EXPORTLOCAL, | |
3458 | message ("%s exported but not used outside %s: %q", | |
3459 | ekind_capName (uentry_getKind (ce)), | |
3460 | fileloc_getBase (mod), | |
3461 | uentry_getName (ce)), | |
3462 | fwhere)) | |
3463 | { | |
3464 | uentry_showDefSpecInfo (ce, fwhere); | |
3465 | } | |
3466 | } | |
3467 | } | |
3468 | } | |
3469 | } | |
3470 | ||
3471 | void | |
3472 | usymtab_allUsed (void) | |
3473 | /*@globals utab@*/ | |
3474 | { | |
3475 | int i; | |
3476 | bool isFileStatic = usymtab_inFileScope (); | |
3477 | cstring last_file = cstring_undefined; | |
3478 | ||
3479 | for (i = 0; i < utab->nentries; i++) | |
3480 | { | |
3481 | bool hasError = FALSE; | |
3482 | uentry ce = utab->entries[i]; | |
3483 | fileloc fwhere = uentry_whereDeclared (ce); | |
3484 | ||
3485 | if (fileloc_isUndefined (fwhere)) | |
3486 | { | |
3487 | fwhere = uentry_whereDefined (ce); | |
3488 | } | |
3489 | ||
3490 | if (fileloc_isInvalid (fwhere) | |
3491 | || fileloc_isLib (fwhere) | |
3492 | || fileloc_isBuiltin (fwhere) | |
3493 | || ((fileloc_isSpecialFile (fwhere) | |
3494 | || fileloc_isSpecialFile (uentry_whereDefined (ce))) | |
3495 | && !context_getFlag (FLG_UNUSEDSPECIAL))) | |
3496 | { | |
3497 | ; | |
3498 | } | |
3499 | else if (!uentry_wasUsed (ce) && !uentry_isAnyTag (ce)) | |
3500 | { | |
3501 | cstring fname = fileloc_filename (fwhere); | |
3502 | ||
3503 | if (cstring_isUndefined (last_file)) | |
3504 | { | |
3505 | last_file = fname; | |
3506 | } | |
3507 | else if (cstring_equal (fname, last_file)) | |
3508 | { | |
3509 | } | |
3510 | else | |
3511 | { | |
3512 | cleanupMessages (); | |
3513 | last_file = fname; | |
3514 | } | |
3515 | ||
3516 | if (uentry_isParam (ce)) | |
3517 | { | |
3518 | if (context_inMacro ()) | |
3519 | { | |
3520 | sRef cref = uentry_getSref (ce); | |
3521 | ||
3522 | if (uentry_isYield (ce)) | |
3523 | { | |
3524 | ; /* no checks (for now) */ | |
3525 | } | |
3526 | else if (sRef_isSafe (cref)) | |
3527 | { | |
3528 | ; /* no error */ | |
3529 | } | |
3530 | else | |
3531 | { | |
3532 | if (uentry_hasRealName (ce)) | |
3533 | { | |
3534 | hasError = | |
3535 | optgenerror (FLG_MACROPARAMS, | |
3536 | message ("Macro parameter %q not used", | |
3537 | uentry_getName (ce)), | |
3538 | fwhere); | |
3539 | } | |
3540 | } | |
3541 | } | |
3542 | else | |
3543 | { | |
3544 | if (cstring_equalFree (uentry_getName (ce), | |
3545 | cstring_makeLiteral ("..."))) | |
3546 | { | |
3547 | ; | |
3548 | } | |
3549 | else | |
3550 | { | |
3551 | hasError = optgenerror (FLG_PARAMUNUSED, | |
3552 | message ("Parameter %q not used", | |
3553 | uentry_getName (ce)), | |
3554 | fwhere); | |
3555 | } | |
3556 | } | |
3557 | } /* isParam */ | |
3558 | else if (uentry_isFunction (ce) || uentry_isIter (ce)) | |
3559 | { | |
3560 | if (fileloc_isUser (fwhere)) | |
3561 | { | |
3562 | hasError = optgenerror | |
3563 | (FLG_FUNCUNUSED, | |
3564 | message ("%q %q declared but not used", | |
3565 | cstring_makeLiteral | |
3566 | (uentry_isIter (ce) ? "Iterator" | |
3567 | : (isFileStatic ? "File static function" : "Function")), | |
3568 | uentry_getName (ce)), | |
3569 | fwhere); | |
3570 | } | |
3571 | } | |
3572 | else if (uentry_isEndIter (ce)) | |
3573 | { | |
3574 | ; /* no error (already reported for iter */ | |
3575 | } | |
3576 | else if (uentry_isEnumConstant (ce)) | |
3577 | { | |
3578 | if (fileloc_isUser (fwhere)) | |
3579 | { | |
3580 | hasError = optgenerror | |
3581 | (FLG_ENUMMEMUNUSED, | |
3582 | message ("Enum member %q not used", | |
3583 | uentry_getName (ce)), | |
3584 | fwhere); | |
3585 | } | |
3586 | } | |
3587 | else if (uentry_isConstant (ce)) | |
3588 | { | |
3589 | if (fileloc_isUser (fwhere)) | |
3590 | { | |
3591 | hasError = optgenerror | |
3592 | (FLG_CONSTUNUSED, | |
3593 | message ("Constant %q declared but not used", | |
3594 | uentry_getName (ce)), | |
3595 | fwhere); | |
3596 | } | |
3597 | } | |
3598 | else if (uentry_isDatatype (ce)) | |
3599 | { | |
3600 | if (fileloc_isUser (fwhere)) | |
3601 | { | |
3602 | hasError = optgenerror | |
3603 | (FLG_TYPEUNUSED, | |
3604 | message ("Type %q declared but not used", | |
3605 | uentry_getName (ce)), | |
3606 | fwhere); | |
3607 | } | |
3608 | } | |
3609 | else if (!uentry_isRefParam (ce) && !uentry_isExpandedMacro (ce)) | |
3610 | { /* errors for ref params will be reported in the next scope */ | |
3611 | llassertprint (uentry_isVar (ce), | |
3612 | ("ce: %s", uentry_unparseFull (ce))); | |
3613 | ||
3614 | if (ctype_isFunction (uentry_getType (ce))) | |
3615 | { | |
3616 | if (fileloc_isUser (fwhere)) | |
3617 | { | |
3618 | hasError = optgenerror | |
3619 | (FLG_FUNCUNUSED, | |
3620 | message ("%q %q declared but not used", | |
3621 | cstring_makeLiteral | |
3622 | (isFileStatic ? "File static function" | |
3623 | : "Function"), | |
3624 | uentry_getName (ce)), | |
3625 | fwhere); | |
3626 | } | |
3627 | } | |
3628 | else | |
3629 | { | |
3630 | if (fileloc_isUser (fwhere)) | |
3631 | { | |
3632 | ||
3633 | ||
3634 | hasError = optgenerror | |
3635 | (FLG_VARUNUSED, | |
3636 | message ("%q %q declared but not used", | |
3637 | cstring_makeLiteral | |
3638 | (isFileStatic ? "File static variable" | |
3639 | : "Variable"), | |
3640 | uentry_getName (ce)), | |
3641 | fwhere); | |
3642 | } | |
3643 | } | |
3644 | } | |
3645 | else | |
3646 | { | |
3647 | ; /* no errors */ | |
3648 | } | |
3649 | } /* unused */ | |
28bf4b0b | 3650 | else if ((uentry_isDatatype (ce) || uentry_isAnyTag (ce))) |
616915dd | 3651 | { /* check all fields */ |
3652 | ctype ct = uentry_getRealType (ce); | |
3653 | ||
3654 | ||
3655 | while (ctype_isAP (ct)) | |
3656 | { | |
3657 | ct = ctype_getBaseType (ct); | |
3658 | } | |
3659 | ||
616915dd | 3660 | if (ctype_isSU (ct)) |
3661 | { | |
3662 | uentryList fields = ctype_getFields (ct); | |
3663 | ||
3664 | uentryList_elements (fields, field) | |
3665 | { | |
3666 | if (!uentry_isUsed (field)) | |
3667 | { | |
3668 | if (uentry_hasName (ce)) | |
3669 | { | |
3670 | hasError |= optgenerror | |
3671 | (FLG_FIELDUNUSED, | |
3672 | message ("Field %q of %s %q declared but not used", | |
3673 | uentry_getName (field), | |
3674 | cstring_makeLiteralTemp | |
3675 | (ctype_isStruct (ct) ? "structure" : "union"), | |
3676 | uentry_getName (ce)), | |
3677 | uentry_whereEarliest (field)); | |
3678 | } | |
3679 | else | |
3680 | { | |
28bf4b0b | 3681 | /* |
3682 | ** evans 2001-06-08 | |
3683 | ** Can't report these errors for unnamed structs. | |
3684 | ** No way to tell when there are multiple consistent | |
3685 | ** unnamed structure types. (Could go through table | |
3686 | ** and mark them all unused...) | |
3687 | ||
616915dd | 3688 | hasError |= optgenerror |
3689 | (FLG_FIELDUNUSED, | |
3690 | message ("Field %q of unnamed %s declared but not used", | |
3691 | uentry_getName (field), | |
3692 | cstring_makeLiteralTemp | |
3693 | (ctype_isStruct (ct) ? "structure" : "union")), | |
3694 | uentry_whereEarliest (field)); | |
28bf4b0b | 3695 | |
3696 | */ | |
616915dd | 3697 | } |
3698 | ||
3699 | uentry_setUsed (field, fileloc_undefined); | |
3700 | } | |
3701 | } end_uentryList_elements; | |
3702 | } | |
3703 | } | |
3704 | else | |
3705 | { | |
3706 | ; /* no errors */ | |
3707 | } | |
3708 | ||
3709 | if (hasError) | |
3710 | { | |
3711 | if (uentry_isParam (ce) && context_inMacro ()) | |
3712 | { | |
3713 | if (fileloc_isDefined (uentry_whereSpecified (ce))) | |
3714 | { | |
3715 | uentry_showWhereSpecified (ce); | |
3716 | } | |
3717 | } | |
3718 | else | |
3719 | { | |
3720 | uentry_showDefSpecInfo (ce, fwhere); | |
3721 | } | |
3722 | ||
3723 | uentry_setUsed (ce, fileloc_undefined); | |
3724 | } | |
3725 | } | |
3726 | } | |
3727 | ||
3728 | static void | |
3729 | checkGlobalReturn (uentry glob, sRef orig) | |
3730 | { | |
3731 | sRef sr = uentry_getSref (glob); | |
3732 | ||
b7b694d6 | 3733 | DPRINTF (("Check global return: %s / orig: %s / sr: %s", |
28bf4b0b | 3734 | uentry_unparseFull (glob), |
3735 | sRef_unparseFull (orig), | |
3736 | sRef_unparseFull (sr))); | |
3737 | ||
3738 | DPRINTF (("Is killed: %s", bool_unparse (sRef_isKilledGlob (orig)))); | |
3739 | ||
616915dd | 3740 | if (context_getFlag (FLG_GLOBSTATE)) |
3741 | { | |
28bf4b0b | 3742 | DPRINTF (("Is killed: %s", sRef_unparseFull (orig))); |
3743 | ||
616915dd | 3744 | if (sRef_isKilledGlob (orig)) |
3745 | { | |
3746 | if (sRef_isStateUndefined (sr) | |
3747 | || sRef_isUnuseable (sr) | |
3748 | || sRef_isStateUnknown (sr) | |
3749 | || sRef_isDead (sr)) | |
3750 | { | |
3751 | ; | |
3752 | } | |
3753 | else | |
3754 | { | |
3755 | ctype ct = ctype_realType (uentry_getType (glob)); | |
393e573f | 3756 | |
2e127cb8 | 3757 | DPRINTF (("Check global destroyed: %s", uentry_unparseFull (glob))); |
3758 | ||
616915dd | 3759 | if (ctype_isVisiblySharable (ct)) |
3760 | { | |
3761 | if (optgenerror | |
3762 | (FLG_GLOBSTATE, | |
3763 | message | |
28bf4b0b | 3764 | ("Killed global %q (type %s) not released before return", |
3765 | uentry_getName (glob), | |
3766 | ctype_unparse (ct)), | |
616915dd | 3767 | g_currentloc)) |
3768 | { | |
3769 | sRef_showStateInfo (sr); | |
28bf4b0b | 3770 | } |
616915dd | 3771 | } |
3772 | else | |
3773 | { | |
28bf4b0b | 3774 | sRef_protectDerivs (); |
2e127cb8 | 3775 | (void) transferChecks_globalDestroyed (sr, g_currentloc); |
616915dd | 3776 | sRef_clearProtectDerivs (); |
3777 | } | |
3778 | } | |
3779 | } | |
3780 | else | |
3781 | { | |
3782 | if (sRef_isStateUndefined (sr)) | |
3783 | { | |
3784 | if (optgenerror (FLG_GLOBSTATE, | |
3785 | message | |
3786 | ("Function returns with global %q undefined", | |
3787 | uentry_getName (glob)), | |
3788 | g_currentloc)) | |
3789 | { | |
3790 | sRef_showStateInfo (sr); | |
3791 | } | |
3792 | } | |
3793 | else | |
3794 | { | |
7ebcc5bb | 3795 | if (sRef_isDead (sr) || sRef_isKept (sr)) |
616915dd | 3796 | { |
3797 | if (optgenerror | |
3798 | (FLG_GLOBSTATE, | |
3799 | message ("Function returns with global %q " | |
7ebcc5bb | 3800 | "referencing %s storage", |
3801 | uentry_getName (glob), | |
3802 | cstring_makeLiteralTemp (sRef_isDead (sr) ? "released" : "kept")), | |
616915dd | 3803 | g_currentloc)) |
3804 | { | |
7ebcc5bb | 3805 | if (sRef_isKept (sr)) |
3806 | { | |
3807 | sRef_showAliasInfo (sr); | |
3808 | } | |
3809 | else | |
3810 | { | |
3811 | sRef_showStateInfo (sr); | |
3812 | } | |
3813 | ||
616915dd | 3814 | sRef_setDefState (sr, SS_UNKNOWN, fileloc_undefined); |
3815 | } | |
3816 | } | |
3817 | ||
28bf4b0b | 3818 | if (ctype_isRealPointer (uentry_getType (glob)) |
3819 | && sRef_possiblyNull (sr) | |
3820 | && !uentry_possiblyNull (glob)) | |
616915dd | 3821 | { |
3822 | if (optgenerror | |
3823 | (FLG_GLOBSTATE, | |
3824 | message ("Function returns with non-null global %q " | |
3825 | "referencing null storage", | |
3826 | uentry_getName (glob)), | |
3827 | g_currentloc)) | |
3828 | { | |
3829 | sRef_showNullInfo (sr); | |
3830 | } | |
3831 | } | |
3832 | else | |
3833 | { | |
393e573f | 3834 | DPRINTF (("Check transfer: %s", uentry_unparseFull (glob))); |
2e127cb8 | 3835 | transferChecks_globalReturn (glob); |
616915dd | 3836 | } |
3837 | } | |
3838 | } | |
3839 | } | |
3840 | } | |
3841 | ||
3842 | /* | |
3843 | ** remember: check alias globals | |
3844 | */ | |
3845 | ||
3846 | void usymtab_checkFinalScope (bool isReturn) | |
3847 | /*@globals utab@*/ | |
3848 | { | |
616915dd | 3849 | bool mustDefine = context_getFlag (FLG_MUSTDEFINE); |
616915dd | 3850 | sRefSet checked = sRefSet_new (); |
3851 | usymtab stab = utab; | |
3852 | int i; | |
3853 | ||
3854 | /* | |
3855 | ** need to check all scopes out to function parameters. | |
3856 | */ | |
3857 | ||
3858 | do | |
3859 | { | |
3860 | for (i = 0; i < stab->nentries; i++) | |
3861 | { | |
3862 | uentry ce = stab->entries[i]; | |
3863 | sRef sr = uentry_getSref (ce); | |
3864 | sRef rb = sRef_getRootBase (sr); | |
28bf4b0b | 3865 | valueTable tvalues; |
616915dd | 3866 | |
28bf4b0b | 3867 | /* |
3868 | ** Shouldn't check if shadow checked in deeper scope: | |
3869 | */ | |
3870 | ||
3871 | if (stab != utab) | |
3872 | { | |
3873 | uentry oue = usymtab_lookupQuietNoAlt (utab, uentry_observeRealName (ce)); | |
3874 | ||
3875 | if (!uentry_sameObject (ce, oue)) | |
3876 | { | |
b73d1009 | 3877 | /* what if it is one an alternate branch? */ |
28bf4b0b | 3878 | /*@innercontinue@*/ continue; |
3879 | } | |
3880 | } | |
3e3ec469 | 3881 | |
28bf4b0b | 3882 | DPRINTF (("Here check final scope: %s", uentry_unparseFull (ce))); |
3883 | ||
616915dd | 3884 | if (ctype_isFunction (uentry_getType (ce))) |
3885 | { | |
3886 | /*@innercontinue@*/ continue; | |
3887 | } | |
3888 | ||
28bf4b0b | 3889 | if (uentry_isAnyParam (ce) |
3890 | || uentry_isRefParam (ce) | |
3891 | || sRef_isFileOrGlobalScope (rb)) | |
3892 | { | |
3893 | /* Don't do the loseref check...but should check state! */ | |
3e3ec469 | 3894 | DPRINTF (("Skipping check 1")); |
28bf4b0b | 3895 | } |
3896 | else if (sRef_isDefinitelyNull (sr) | |
3897 | || usymtab_isDefinitelyNull (sr)) | |
3898 | { | |
3899 | /* | |
3900 | ** No state reference errors for definitely null references. | |
3901 | */ | |
3e3ec469 | 3902 | |
3903 | DPRINTF (("Skipping check 2")); | |
28bf4b0b | 3904 | } |
3905 | else | |
3906 | { | |
3907 | DPRINTF (("Lose ref: %s / %s", uentry_unparse (ce), | |
3908 | sRef_unparseFull (sr))); | |
3909 | ||
3910 | tvalues = sRef_getValueTable (sr); | |
3911 | ||
3912 | valueTable_elements (tvalues, fkey, fval) { | |
3913 | metaStateInfo minfo; | |
3914 | cstring msg = cstring_undefined; | |
3915 | int nval; | |
3916 | ||
3917 | minfo = context_lookupMetaStateInfo (fkey); | |
3918 | llassert (metaStateInfo_isDefined (minfo)); | |
3919 | ||
15b3d2b2 | 3920 | if (stateValue_isError (fval) |
3921 | || sRef_isStateUndefined (sr)) /* No errors for undefined state */ | |
28bf4b0b | 3922 | { |
3e3ec469 | 3923 | DPRINTF (("Skipping check 3")); |
28bf4b0b | 3924 | } |
3925 | else | |
3926 | { | |
3927 | DPRINTF (("Check: %s / %s / %s", fkey, | |
3928 | metaStateInfo_unparse (minfo), | |
3929 | stateValue_unparse (fval))); | |
3930 | ||
3931 | minfo = context_lookupMetaStateInfo (fkey); | |
3932 | ||
3933 | nval = stateCombinationTable_lookupLoseReference | |
3934 | (metaStateInfo_getTransferTable (minfo), | |
3935 | stateValue_getValue (fval), &msg); | |
3936 | ||
3937 | if (cstring_isDefined (msg)) | |
3938 | { | |
28bf4b0b | 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 | ||
b73d1009 | 3960 | DPRINTF (("Check mustfree entry: %s", uentry_unparseFull (ce))); |
3961 | ||
3962 | if (!sRefSet_member (checked, sr) && !sRef_isFileOrGlobalScope (rb)) | |
616915dd | 3963 | { |
b73d1009 | 3964 | if (ctype_isRealSU (uentry_getType (ce)) |
3965 | && !uentry_isAnyParam (ce) | |
3966 | && !uentry_isRefParam (ce) | |
3967 | && !uentry_isStatic (ce) | |
3968 | && !sRef_isDependent (sr) | |
3969 | && !sRef_isOwned (sr)) | |
616915dd | 3970 | { |
b73d1009 | 3971 | sRefSet als = usymtab_allAliases (sr); |
3972 | ||
3973 | if (sRefSet_isEmpty (als)) | |
616915dd | 3974 | { |
b73d1009 | 3975 | transferChecks_localDestroyed (sr, g_currentloc); |
3976 | } | |
3977 | else | |
3978 | { | |
3979 | /* aliased, no problem */ ; | |
3980 | } | |
3981 | ||
3982 | sRefSet_free (als); | |
3983 | } | |
3984 | else if | |
3985 | (!uentry_isStatic (ce) | |
3986 | && ((sRef_isNewRef (sr)) | |
3987 | || (((sRef_isOnly (sr) || sRef_isFresh (sr) | |
3988 | || sRef_isKeep (sr) || sRef_isOwned (sr)) | |
3989 | && !sRef_isDead (sr)) | |
3990 | && (!sRef_definitelyNull (sr)) | |
3991 | && (!usymtab_isDefinitelyNull (sr))))) | |
3992 | { | |
3993 | bool hasError = TRUE; | |
3994 | ||
3995 | DPRINTF (("Checking: %s", sRef_unparseFull (sr))); | |
3996 | ||
3997 | /* | |
3998 | ** If its a scope exit, check if there is an alias. | |
3999 | ** If so, make it only. If not, there is an error. | |
4000 | */ | |
4001 | ||
4002 | if (!isReturn) | |
4003 | { | |
4004 | if (transferChecks_canLoseReference (sr, g_currentloc)) | |
616915dd | 4005 | { |
b73d1009 | 4006 | DPRINTF (("Can lose!")); |
4007 | hasError = FALSE; | |
616915dd | 4008 | } |
616915dd | 4009 | } |
b73d1009 | 4010 | |
4011 | if (hasError) | |
616915dd | 4012 | { |
b73d1009 | 4013 | if (sRef_hasLastReference (sr)) |
4014 | { | |
4015 | sRef ar = sRef_getAliasInfoRef (sr); | |
4016 | ||
4017 | if (optgenerror | |
4018 | (sRef_isFresh (ar) ? FLG_MUSTFREEFRESH : FLG_MUSTFREEONLY, | |
4019 | message | |
4020 | ("Last reference %q to %s storage %qnot %q before %q", | |
4021 | sRef_unparse (sr), | |
4022 | alkind_unparse (sRef_getAliasKind (sr)), | |
4023 | sRef_unparseOpt (ar), | |
4024 | cstring_makeLiteral (sRef_isKeep (sr) | |
4025 | ? "transferred" : "released"), | |
4026 | cstring_makeLiteral (isReturn | |
4027 | ? "return" : "scope exit")), | |
4028 | g_currentloc)) | |
4029 | { | |
4030 | sRef_showRefLost (sr); | |
4031 | } | |
4032 | } | |
4033 | else if (sRef_isNewRef (sr)) | |
4034 | { | |
4035 | if (optgenerror | |
4036 | (sRef_isFresh (sr) ? FLG_MUSTFREEFRESH : FLG_MUSTFREEONLY, | |
4037 | message | |
4038 | ("%q %q not released before %q", | |
4039 | cstring_makeLiteral | |
4040 | (alkind_isKillRef (sRef_getOrigAliasKind (sr)) | |
4041 | ? "Kill reference parameter" : "New reference"), | |
4042 | uentry_getName (ce), | |
4043 | cstring_makeLiteral (isReturn | |
4044 | ? "return" : "scope exit")), | |
4045 | g_currentloc)) | |
4046 | { | |
4047 | sRef_showAliasInfo (sr); | |
4048 | } | |
4049 | } | |
4050 | else | |
4051 | { | |
4052 | if (ctype_isRealSU (sRef_getType (sr))) | |
4053 | { | |
4054 | transferChecks_structDestroyed (sr, g_currentloc); | |
4055 | } | |
4056 | else | |
4057 | { | |
4058 | if (optgenerror | |
4059 | (sRef_isFresh (sr) ? FLG_MUSTFREEFRESH : FLG_MUSTFREEONLY, | |
4060 | message | |
4061 | ("%s storage %q not %q before %q", | |
4062 | alkind_capName (sRef_getAliasKind (sr)), | |
4063 | uentry_getName (ce), | |
4064 | cstring_makeLiteral (sRef_isKeep (sr) | |
4065 | ? "transferred" : "released"), | |
4066 | cstring_makeLiteral (isReturn | |
4067 | ? "return" : "scope exit")), | |
4068 | g_currentloc)) | |
4069 | { | |
4070 | sRef_showAliasInfo (sr); | |
4071 | DPRINTF (("Storage: %s", sRef_unparseFull (sr))); | |
4072 | } | |
4073 | } | |
4074 | } | |
616915dd | 4075 | } |
4076 | } | |
b73d1009 | 4077 | else |
4078 | { | |
4079 | ; | |
4080 | } | |
3e3ec469 | 4081 | } |
4082 | ||
a956d444 | 4083 | if (mustDefine && uentry_isOut (ce)) |
3e3ec469 | 4084 | { |
a956d444 | 4085 | /* No error if its dead (either only or error already reported */ |
4086 | if (!sRef_isReallyDefined (sr) && !sRef_isDead (sr)) | |
616915dd | 4087 | { |
3e3ec469 | 4088 | voptgenerror |
4089 | (FLG_MUSTDEFINE, | |
4090 | message ("Out storage %q not defined before %q", | |
4091 | uentry_getName (ce), | |
4092 | cstring_makeLiteral | |
4093 | (isReturn ? "return" : "scope exit")), | |
4094 | g_currentloc); | |
2e127cb8 | 4095 | |
4096 | DPRINTF (("sr: %s", sRef_unparseFull (sr))); | |
616915dd | 4097 | } |
3e3ec469 | 4098 | } |
4099 | ||
4100 | /* | |
4101 | ** also check state is okay | |
4102 | */ | |
4103 | ||
4104 | if (usymtab_lexicalLevel () > functionScope | |
4105 | && uentry_isVariable (ce) | |
4106 | && (sRef_isLocalVar (sr) | |
4107 | && (sRef_isDependent (sr) || sRef_isLocalState (sr)))) | |
4108 | { | |
4109 | sRefSet ab = usymtab_aliasedBy (sr); | |
616915dd | 4110 | |
3e3ec469 | 4111 | /* should do something more efficient here */ |
28bf4b0b | 4112 | |
3e3ec469 | 4113 | if (sRefSet_isEmpty (ab)) |
616915dd | 4114 | { |
3e3ec469 | 4115 | /* and no local ref */ |
4116 | DPRINTF (("Check lose ref: %s", uentry_unparseFull (ce))); | |
2e127cb8 | 4117 | transferChecks_loseReference (ce); |
616915dd | 4118 | } |
3e3ec469 | 4119 | else |
616915dd | 4120 | { |
4121 | ; | |
4122 | } | |
4123 | ||
3e3ec469 | 4124 | sRefSet_free (ab); |
616915dd | 4125 | } |
3e3ec469 | 4126 | else |
4127 | { | |
4128 | ; | |
4129 | } | |
4130 | ||
4131 | checked = sRefSet_insert (checked, sr); | |
616915dd | 4132 | } |
28bf4b0b | 4133 | |
616915dd | 4134 | llassert (usymtab_isDefined (stab->env)); |
4135 | ||
4136 | if (usymtab_isBranch (stab)) | |
4137 | { | |
4138 | stab = usymtab_dropEnv (stab); | |
4139 | } | |
4140 | else | |
4141 | { | |
4142 | stab = stab->env; | |
4143 | } | |
28bf4b0b | 4144 | |
616915dd | 4145 | llassert (stab != usymtab_undefined); |
4146 | } while (isReturn && (stab->lexlevel >= paramsScope)); | |
28bf4b0b | 4147 | |
4148 | sRefSet_free (checked); | |
4149 | ||
616915dd | 4150 | /* |
4151 | ** for returns: | |
4152 | ** all globals are appropriately defined | |
4153 | ** all parameters are appropriately defined | |
4154 | ** special clauses are followed | |
4155 | */ | |
4156 | ||
4157 | if (isReturn || (utab->lexlevel == paramsScope)) | |
4158 | { | |
4159 | uentry fcn = context_getHeader (); | |
4160 | uentryList params = context_getParams (); | |
4161 | globSet uglobs = context_getUsedGlobs (); | |
4162 | globSet sglobs = context_getGlobs (); | |
616915dd | 4163 | |
4164 | if (isReturn && context_maybeSet (FLG_GLOBALIAS)) | |
4165 | { | |
4166 | aliasTable_checkGlobs (utab->aliases); | |
4167 | } | |
4168 | ||
4169 | /* | |
28bf4b0b | 4170 | ** state clauses (ensures, defines, sets, allocates, releases) |
616915dd | 4171 | */ |
28bf4b0b | 4172 | |
4173 | if (uentry_hasStateClauseList (fcn)) | |
616915dd | 4174 | { |
28bf4b0b | 4175 | stateClauseList clauses = uentry_getStateClauseList (fcn); |
616915dd | 4176 | |
28bf4b0b | 4177 | stateClauseList_elements (clauses, cl) |
616915dd | 4178 | { |
28bf4b0b | 4179 | if (stateClause_isAfter (cl) && !stateClause_isGlobal (cl)) |
4180 | { | |
4181 | if (stateClause_setsMetaState (cl)) | |
616915dd | 4182 | { |
28bf4b0b | 4183 | sRefSet rfs = stateClause_getRefs (cl); |
4184 | qual q = stateClause_getMetaQual (cl); | |
4185 | annotationInfo ainfo = qual_getAnnotationInfo (q); | |
4186 | metaStateInfo minfo = annotationInfo_getState (ainfo); | |
4187 | cstring key = metaStateInfo_getName (minfo); | |
4188 | int mvalue = annotationInfo_getValue (ainfo); | |
4189 | ||
4190 | DPRINTF (("Post meta state clause: %s", stateClause_unparse (cl))); | |
4191 | ||
4192 | sRefSet_elements (rfs, el) | |
616915dd | 4193 | { |
28bf4b0b | 4194 | sRef base = sRef_getRootBase (el); |
616915dd | 4195 | |
28bf4b0b | 4196 | if (sRef_isResult (base)) |
4197 | { | |
4198 | /* | |
4199 | ** This is checked for return transfers. | |
4200 | */ | |
4201 | ; | |
4202 | } | |
4203 | else if (sRef_isParam (base) || sRef_isGlobalMarker (base)) | |
616915dd | 4204 | { |
28bf4b0b | 4205 | sRef sr = sRef_updateSref (base); |
4206 | sr = sRef_fixBase (el, sr); | |
4207 | ||
4208 | if (!sRef_checkMetaStateValue (sr, key, mvalue)) | |
616915dd | 4209 | { |
28bf4b0b | 4210 | if (optgenerror |
4211 | (FLG_STATETRANSFER, | |
4212 | message | |
2c88d156 | 4213 | ("Ensures clause not satisfied%q (state is %q): %q", |
28bf4b0b | 4214 | sRef_isGlobalMarker (sr) |
4215 | ? message ("") | |
4216 | : message (" by %q", sRef_unparse (sr)), | |
4217 | stateValue_unparseValue (sRef_getMetaStateValue (sr, key), | |
4218 | minfo), | |
4219 | stateClause_unparse (cl)), | |
4220 | g_currentloc)) | |
616915dd | 4221 | { |
28bf4b0b | 4222 | sRef_showMetaStateInfo (sr, key); |
4223 | } | |
4224 | } | |
616915dd | 4225 | } |
28bf4b0b | 4226 | else |
4227 | { | |
4228 | if (sRef_isMeaningful (el)) | |
4229 | { | |
4230 | BADBRANCH; | |
4231 | } | |
4232 | } | |
4233 | } end_sRefSet_elements ; | |
4234 | } | |
4235 | else | |
4236 | { | |
4237 | /* evs - 2000 07 10 - added this */ | |
4238 | sRefTest tst = stateClause_getPostTestFunction (cl); | |
4239 | sRefSet rfs = stateClause_getRefs (cl); | |
4240 | ||
4241 | sRefSet_elements (rfs, el) | |
616915dd | 4242 | { |
28bf4b0b | 4243 | sRef base = sRef_getRootBase (el); |
4244 | ||
4245 | if (sRef_isResult (base)) | |
616915dd | 4246 | { |
28bf4b0b | 4247 | /* |
4248 | ** This is checked for return transfers. | |
4249 | */ | |
4250 | ||
4251 | ; | |
616915dd | 4252 | } |
28bf4b0b | 4253 | else if (sRef_isParam (base)) |
4254 | { | |
4255 | sRef sr = sRef_updateSref (base); | |
4256 | sr = sRef_fixBase (el, sr); | |
4257 | ||
4258 | if (tst != NULL && !tst (sr)) | |
4259 | { | |
4260 | if (optgenerror | |
4261 | (stateClause_postErrorCode (cl), | |
4262 | message ("%s storage %qcorresponds to " | |
4263 | "storage listed in %q clause", | |
4264 | stateClause_postErrorString (cl, sr), | |
4265 | sRef_unparseOpt (sr), | |
4266 | stateClause_unparseKind (cl)), | |
4267 | g_currentloc)) | |
4268 | { | |
4269 | sRefShower ss = stateClause_getPostTestShower (cl); | |
4270 | ||
4271 | if (ss != NULL) | |
4272 | { | |
4273 | ss (sr); | |
4274 | } | |
1d239d69 | 4275 | |
3120b462 | 4276 | DPRINTF (("Storage: %s", sRef_unparseFull (sr))); |
28bf4b0b | 4277 | } |
4278 | } | |
4279 | } | |
4280 | else | |
4281 | { | |
4282 | if (sRef_isMeaningful (el)) | |
4283 | { | |
4284 | BADBRANCH; | |
4285 | } | |
4286 | } | |
4287 | } end_sRefSet_elements ; | |
4288 | } | |
616915dd | 4289 | } |
28bf4b0b | 4290 | } end_stateClauseList_elements ; |
616915dd | 4291 | } |
4292 | ||
4293 | /* | |
4294 | ** check parameters on return | |
4295 | */ | |
4296 | ||
4297 | uentryList_elements (params, arg) | |
4298 | { | |
4299 | if (!uentry_isElipsisMarker (arg)) | |
4300 | { | |
4301 | ctype rt = ctype_realType (uentry_getType (arg)); | |
4302 | ||
4303 | if (ctype_isMutable (rt) || ctype_isSU (rt)) | |
4304 | { | |
4305 | uentry param = usymtab_lookupQuiet (utab, uentry_rawName (arg)); | |
28bf4b0b | 4306 | DPRINTF (("Check param return: %s", uentry_unparseFull (param))); |
2e127cb8 | 4307 | transferChecks_paramReturn (param); |
616915dd | 4308 | } |
4309 | } | |
4310 | } end_uentryList_elements; | |
4311 | ||
28bf4b0b | 4312 | DPRINTF (("Check global return: %s", |
4313 | globSet_unparse (sglobs))); | |
4314 | ||
616915dd | 4315 | globSet_allElements (sglobs, el) |
4316 | { | |
28bf4b0b | 4317 | sRef orig = el; /*! sRef_updateSref (el); */ /*!!!*/ |
616915dd | 4318 | uentry current = sRef_getUentry (el); |
4319 | ||
28bf4b0b | 4320 | DPRINTF (("Check global return: %s / %s", sRef_unparseFull (el), |
4321 | uentry_unparseFull (current))); | |
4322 | ||
616915dd | 4323 | if (uentry_isVariable (current) && !uentry_isRealFunction (current)) |
4324 | { | |
28bf4b0b | 4325 | checkGlobalReturn (current, orig); |
616915dd | 4326 | } |
4327 | } end_globSet_allElements; | |
4328 | ||
4329 | globSet_allElements (uglobs, el) | |
4330 | { | |
4331 | if (!globSet_member (sglobs, el)) | |
4332 | { | |
4333 | uentry current = sRef_getUentry (el); | |
4334 | ||
616915dd | 4335 | if (uentry_isVariable (current) |
4336 | && !uentry_isRealFunction (current)) | |
4337 | { | |
4338 | checkGlobalReturn (current, sRef_undefined); | |
4339 | } | |
4340 | } | |
4341 | } end_globSet_allElements; | |
28bf4b0b | 4342 | } |
4343 | } | |
616915dd | 4344 | |
4345 | void | |
4346 | usymtab_quietExitScope (fileloc loc) | |
4347 | /*@globals utab, globtab, filetab; @*/ | |
4348 | /*@modifies utab@*/ | |
4349 | { | |
4350 | usymtab t = utab->env; | |
4351 | ||
6fcd0b1e | 4352 | DPRINTF (("Quiet exit scope [%p]", utab)); |
4353 | ||
616915dd | 4354 | if (utab->reftable != NULL) |
4355 | { | |
4356 | int i; | |
4357 | ||
4358 | for (i = 0; i < utab->nentries; i++) | |
4359 | { | |
4360 | uentry current = utab->entries[i]; | |
4361 | uentry old = usymtab_lookupAux (t, uentry_rawName (current)); | |
4362 | ||
4363 | uentry_mergeState (old, current, loc, FALSE, FALSE, FALSE, NOCLAUSE); | |
4364 | } | |
4365 | } | |
4366 | ||
4367 | llassert (t != NULL); | |
4368 | ||
4369 | if (t->lexlevel > paramsScope) | |
4370 | { | |
4371 | t->guards = guardSet_levelUnion (t->guards, utab->guards, t->lexlevel); | |
4372 | t->aliases = aliasTable_levelUnionSeq (t->aliases, utab->aliases, | |
4373 | t->lexlevel); | |
4374 | utab->aliases = aliasTable_undefined; | |
4375 | } | |
4376 | ||
4377 | t->mustBreak = utab->mustBreak; | |
4378 | t->exitCode = utab->exitCode; | |
4379 | ||
6fcd0b1e | 4380 | DPRINTF (("Free level [%p]", utab)); |
616915dd | 4381 | usymtab_freeLevel (utab); |
4382 | ||
4383 | utab = t; | |
6483a926 | 4384 | |
4385 | # ifdef DEBUGSPLINT | |
4386 | usymtab_checkAllValid (); | |
4387 | # endif | |
616915dd | 4388 | } |
4389 | ||
4390 | /* | |
4391 | ** Exit a scope with no checking, lose alias states. | |
4392 | ** (When should this be used?) | |
4393 | */ | |
4394 | ||
4395 | void usymtab_quietPlainExitScope (void) | |
4396 | /*@globals utab, globtab, filetab@*/ | |
4397 | /*@modifies utab@*/ | |
4398 | { | |
4399 | usymtab t = utab->env; | |
4400 | ||
4401 | llassert (t != NULL); | |
4402 | llassert (NOALIAS (utab->aliases, t->aliases)); | |
4403 | usymtab_freeLevel (utab); | |
4404 | utab = t; | |
4405 | } | |
4406 | ||
4407 | void usymtab_exitScope (exprNode expr) | |
4408 | /*@globals utab, filetab, globtab@*/ | |
4409 | /*@modifies utab, globtab@*/ | |
4410 | { | |
4411 | usymtab ctab = usymtab_undefined; | |
4412 | usymtab lctab = usymtab_undefined; | |
4413 | bool mustReturn = exprNode_mustEscape (expr); | |
28bf4b0b | 4414 | |
6fcd0b1e | 4415 | DPRINTF (("Exit scope [%p]", utab)); |
28bf4b0b | 4416 | |
616915dd | 4417 | if (utab->kind == US_CBRANCH) |
4418 | { | |
4419 | /* | |
4420 | ** save the case branches, remove the first non-cbranch | |
4421 | */ | |
4422 | ||
4423 | ctab = utab; | |
4424 | ||
4425 | while (utab->kind == US_CBRANCH) | |
4426 | { | |
4427 | lctab = utab; | |
4428 | utab = utab->env; | |
4429 | llassert (utab != GLOBAL_ENV); | |
4430 | } | |
4431 | } | |
4432 | ||
4433 | if (utab->kind == US_TBRANCH || utab->kind == US_FBRANCH | |
6483a926 | 4434 | || utab->kind == US_CBRANCH || utab->kind == US_SWITCH) |
4435 | { | |
4436 | if (context_inMacro ()) | |
616915dd | 4437 | { |
6483a926 | 4438 | /* evs 2000-07-25 */ |
4439 | /* Unparseable macro may end inside nested scope. Deal with it. */ | |
4440 | ||
4441 | llerror (FLG_SYNTAX, | |
4442 | message ("Problem parsing macro body of %s (unbalanced scopes). " | |
4443 | "Attempting to recover, recommend /*@notfunction@*/ before " | |
4444 | "macro definition.", | |
4445 | context_inFunctionName ())); | |
4446 | ||
4447 | while (utab->kind == US_TBRANCH | |
4448 | || utab->kind == US_FBRANCH | |
4449 | || utab->kind == US_CBRANCH | |
4450 | || utab->kind == US_SWITCH) | |
4451 | { | |
4452 | utab = utab->env; | |
4453 | llassert (utab != GLOBAL_ENV); | |
4454 | } | |
4455 | } else | |
4456 | { | |
4457 | llcontbug (message ("exitScope: in branch: %q", usymtab_unparseStack ())); | |
4458 | /*@-branchstate@*/ | |
4459 | } /*@=branchstate@*/ | |
4460 | } | |
4461 | ||
616915dd | 4462 | /* |
4463 | ** check all variables in scope were used | |
4464 | */ | |
4465 | ||
4466 | /* | |
4467 | ** bogus errors if this is the normal inside a switch, | |
4468 | ** since cases have not been merged yet. Should probably | |
4469 | ** still check this, but I'm too lazy at the moment... | |
4470 | */ | |
4471 | ||
4472 | llassertfatal (utab->env != GLOBAL_ENV); | |
4473 | ||
4474 | if (utab->env->kind != US_SWITCH) | |
4475 | { | |
4476 | usymtab_allUsed (); | |
4477 | } | |
4478 | ||
4479 | /* | |
4480 | ** check aliasing: all only params are released (dead) | |
4481 | ** definition: all out params are defined, all modified params | |
4482 | ** are completely defined | |
4483 | ** | |
4484 | ** NOTE: note for exiting paramsScope, since checkReturn should be | |
4485 | ** called first. | |
4486 | */ | |
6483a926 | 4487 | |
616915dd | 4488 | if (!mustReturn && (usymtab_lexicalLevel () > functionScope)) |
4489 | { | |
4490 | /* | |
4491 | ** should only call this is end of scope is reachable... | |
4492 | */ | |
4493 | ||
4494 | usymtab_checkFinalScope (FALSE); | |
4495 | } | |
4496 | ||
4497 | if (usymtab_lexicalLevel () == paramsScope && context_inFunctionLike ()) | |
4498 | { | |
4499 | /* | |
4500 | ** leaving a function, need to fix up globals | |
4501 | */ | |
4502 | ||
4503 | uentryList params = context_getParams (); | |
4504 | globSet globs = context_getUsedGlobs (); | |
4505 | ||
616915dd | 4506 | uentryList_elements (params, ue) |
4507 | { | |
4508 | uentry_fixupSref (ue); | |
4509 | } end_uentryList_elements; | |
4510 | ||
4511 | clearFunctionTypes (); | |
4512 | ||
6483a926 | 4513 | DPRINTF (("Fixing up globals: %s", globSet_unparse (globs))); |
4514 | ||
616915dd | 4515 | globSet_allElements (globs, el) |
4516 | { | |
6483a926 | 4517 | DPRINTF (("Fix: %s", sRef_unparseDebug (el))); |
4518 | ||
616915dd | 4519 | if (sRef_isCvar (el)) |
4520 | { | |
4521 | uentry current; | |
b73d1009 | 4522 | usymId index = sRef_getScopeIndex (el); |
616915dd | 4523 | |
4524 | if (sRef_isFileStatic (el)) | |
4525 | { | |
4526 | llassert (usymtab_isDefined (filetab)); | |
4527 | current = usymtab_fetchIndex (filetab, index); | |
4528 | } | |
4529 | else | |
4530 | { | |
4531 | current = usymtab_fetchIndex (globtab, index); | |
4532 | } | |
4533 | ||
4534 | if (uentry_isVariable (current)) | |
4535 | { | |
6483a926 | 4536 | DPRINTF (("Fixup: %s", uentry_unparse (current))); |
616915dd | 4537 | uentry_fixupSref (current); |
4538 | } | |
4539 | else | |
4540 | { | |
6483a926 | 4541 | DPRINTF (("Clear: %s", uentry_getSref (current))); |
616915dd | 4542 | sRef_clearDerived (uentry_getSref (current)); |
4543 | } | |
4544 | } | |
6483a926 | 4545 | |
4546 | sRef_clearDerived (el); /* evans 2002-03-14 - this is the likely source of many crashes! */ | |
616915dd | 4547 | } end_globSet_allElements; |
4548 | } | |
4549 | ||
4550 | usymtab_quietExitScope (exprNode_loc (expr)); | |
4551 | ||
4552 | if (lctab != usymtab_undefined) | |
4553 | { | |
4554 | /*@i@*/ lctab->env = utab; | |
4555 | /*@i@*/ utab = ctab; | |
4556 | /*@-branchstate@*/ } /*@=branchstate@*/ | |
146e25eb | 4557 | /*@-globstate@*/ |
6483a926 | 4558 | |
4559 | ||
4560 | # ifdef DEBUGSPLINT | |
4561 | usymtab_checkAllValid (); | |
4562 | # endif | |
b73d1009 | 4563 | } |
616915dd | 4564 | /*@=globstate@*/ |
4565 | ||
4566 | /* | |
4567 | ** yikes! don't let the '170 kids see this one... | |
4568 | */ | |
4569 | ||
b73d1009 | 4570 | usymId |
4571 | usymtab_directParamNo (uentry ue) | |
616915dd | 4572 | { |
4573 | if (uentry_isVar (ue)) | |
4574 | { | |
4575 | sRef sr = uentry_getSref (ue); | |
4576 | ||
4577 | if (sRef_lexLevel (sr) == functionScope) | |
4578 | { | |
b73d1009 | 4579 | usymId index = sRef_getScopeIndex (sr); |
616915dd | 4580 | |
b73d1009 | 4581 | if (index < usymId_fromInt (uentryList_size (context_getParams ()))) |
616915dd | 4582 | { |
4583 | return index; | |
4584 | } | |
4585 | } | |
4586 | } | |
b73d1009 | 4587 | return usymId_invalid; |
616915dd | 4588 | } |
4589 | ||
4590 | /*@dependent@*/ /*@exposed@*/ uentry | |
4591 | usymtab_getParam (int paramno) | |
4592 | /*@globals utab@*/ | |
4593 | { | |
4594 | /* | |
4595 | ** requires in a function context (checked) | |
4596 | ** | |
4597 | ** depends on no nested functions --- the function | |
4598 | ** parameters are ALWAYS one scope inside the global scope | |
4599 | ** and entered in order! | |
4600 | */ | |
4601 | usymtab s = utab; | |
4602 | ||
4603 | if (!context_inFunctionLike ()) | |
4604 | llfatalbug (message ("usymtab_getParam: not in function context: %q", | |
4605 | context_unparse ())); | |
4606 | ||
4607 | while (s->lexlevel > paramsScope) | |
4608 | { | |
4609 | s = s->env; | |
4610 | } | |
4611 | ||
4612 | llassert (usymtab_isDefined (s)); | |
4613 | ||
4614 | if (paramno >= s->nentries) | |
4615 | { | |
4616 | /* | |
4617 | ** Parse errors lead to this. | |
4618 | */ | |
4619 | ||
4620 | uentry err = uentry_makeVariableLoc (cstring_makeLiteralTemp ("<error>"), | |
4621 | ctype_unknown); | |
4622 | ||
4623 | uentry_markOwned (err); | |
4624 | return (err); | |
4625 | } | |
4626 | ||
4627 | return (s->entries[paramno]); | |
4628 | } | |
4629 | ||
4630 | static /*@dependent@*/ /*@exposed@*/ uentry | |
4631 | usymtab_getRefTab (/*@notnull@*/ usymtab u, int level, usymId index) | |
4632 | { | |
4633 | uentry ue; | |
4634 | ||
616915dd | 4635 | ue = usymtab_getRefNoisy (u, level, index); |
4636 | ||
616915dd | 4637 | if (uentry_isUndefined (ue)) |
4638 | { | |
4639 | llbug (message ("usymtab_getRef: out of range: %d. level = %d", | |
4640 | index, level)); | |
4641 | } | |
616915dd | 4642 | |
4643 | return ue; | |
4644 | } | |
4645 | ||
4646 | static /*@dependent@*/ /*@exposed@*/ usymtab | |
4647 | usymtab_dropEnv (/*@notnull@*/ usymtab s) | |
4648 | { | |
4649 | if (s->kind == US_CBRANCH) | |
4650 | { | |
4651 | usymtab t = s; | |
4652 | ||
4653 | do | |
4654 | { | |
4655 | t = s; | |
4656 | s = s->env; | |
4657 | llassert (s != GLOBAL_ENV); | |
4658 | } while (s->kind == US_CBRANCH); | |
4659 | /* drop all cases (except in nested scopes */ | |
4660 | ||
4661 | s = t; | |
4662 | llassert (s != GLOBAL_ENV); | |
4663 | } | |
4664 | ||
4665 | if (s->kind == US_FBRANCH) | |
4666 | { | |
4667 | s = s->env; /* skip the true branch */ | |
4668 | llassert (usymtab_isDefined (s)); | |
4669 | llassert (s->kind == US_TBRANCH); | |
4670 | } | |
4671 | ||
4672 | llassert (s != GLOBAL_ENV); | |
4673 | s = s->env; | |
4674 | ||
4675 | return s; | |
4676 | } | |
4677 | ||
4678 | /*@dependent@*/ /*@exposed@*/ uentry | |
4679 | usymtab_getRefQuiet (int level, usymId index) | |
4680 | /*@globals utab@*/ | |
4681 | { | |
4682 | usymtab s = utab; | |
4683 | ||
4684 | ||
4685 | llassert (s != NULL); | |
4686 | llassert (index >= 0); | |
4687 | ||
4688 | if (level > s->lexlevel) | |
28bf4b0b | 4689 | { |
616915dd | 4690 | return uentry_undefined; |
4691 | } | |
4692 | ||
4693 | llassertprint (level <= s->lexlevel, ("level: %d / lexlevel: %d", | |
4694 | level, s->lexlevel)); | |
4695 | ||
4696 | while (s->lexlevel > level) | |
4697 | { | |
4698 | if (usymtab_isBranch (s)) | |
4699 | { | |
4700 | int eindex = refTable_lookup (s, level, index); | |
4701 | ||
4702 | if (eindex != NOT_FOUND) | |
4703 | { | |
4704 | return (s->entries[eindex]); | |
4705 | } | |
4706 | } | |
4707 | ||
4708 | s = usymtab_dropEnv (s); | |
4709 | } | |
4710 | ||
4711 | while (usymtab_isBranch (s) && s->lexlevel == level) | |
4712 | { | |
4713 | int eindex = refTable_lookup (s, level, index); | |
4714 | ||
4715 | if (eindex != NOT_FOUND) | |
4716 | { | |
4717 | return (s->entries[eindex]); | |
4718 | } | |
4719 | ||
4720 | s = usymtab_dropEnv (s); | |
4721 | } | |
4722 | ||
b73d1009 | 4723 | if (index >= usymId_fromInt (s->nentries)) |
616915dd | 4724 | { |
4725 | return uentry_undefined; | |
4726 | } | |
4727 | ||
4728 | llassert (!uentry_isUndefined (s->entries[index])); | |
4729 | ||
4730 | return s->entries[index]; | |
4731 | } | |
4732 | ||
4733 | static /*@dependent@*/ /*@exposed@*/ uentry | |
4734 | usymtab_getRefNoisy (/*@notnull@*/ usymtab s, int level, usymId index) | |
4735 | { | |
4736 | usymtab otab = s; | |
4737 | uentry ue = uentry_undefined; | |
616915dd | 4738 | |
4739 | llassert (index >= 0); | |
616915dd | 4740 | |
4741 | while (s->lexlevel > level) | |
4742 | { | |
616915dd | 4743 | if (usymtab_isBranch (s)) |
4744 | { | |
4745 | int eindex = refTable_lookup (s, level, index); | |
4746 | ||
4747 | if (eindex != NOT_FOUND) | |
4748 | { | |
4749 | ue = s->entries[eindex]; | |
4750 | ||
4751 | if (s != otab) | |
4752 | { | |
4753 | while (!usymtab_isBranch (otab)) | |
4754 | { | |
4755 | otab = usymtab_dropEnv (otab); | |
4756 | llassert (otab != GLOBAL_ENV); | |
4757 | } | |
4758 | ||
4759 | if (refTable_lookup (otab, level, index) == NOT_FOUND) | |
4760 | { | |
4761 | ue = usymtab_addRefEntry (otab, uentry_rawName (ue)); | |
4762 | } | |
4763 | else | |
4764 | { | |
4765 | ; | |
4766 | } | |
4767 | } | |
4768 | ||
4769 | return ue; | |
4770 | } | |
4771 | } | |
4772 | ||
4773 | s = usymtab_dropEnv (s); | |
4774 | } | |
4775 | ||
4776 | llassert (usymtab_isDefined (s)); | |
4777 | ||
4778 | while (usymtab_isBranch (s) && s->lexlevel == level) | |
4779 | { | |
4780 | int eindex = refTable_lookup (s, level, index); | |
616915dd | 4781 | |
4782 | if (eindex != NOT_FOUND) | |
4783 | { | |
4784 | ue = s->entries[eindex]; | |
4785 | ||
4786 | if (s != otab) | |
4787 | { | |
4788 | while (!usymtab_isBranch (otab)) | |
4789 | { | |
4790 | otab = usymtab_dropEnv (otab); | |
4791 | llassert (otab != GLOBAL_ENV); | |
4792 | } | |
4793 | ||
4794 | ue = usymtab_addRefEntry (otab, uentry_rawName (ue)); | |
4795 | } | |
4796 | else | |
4797 | { | |
4798 | ; | |
4799 | } | |
4800 | ||
4801 | return ue; | |
4802 | } | |
4803 | ||
4804 | s = usymtab_dropEnv (s); | |
4805 | } | |
4806 | ||
b73d1009 | 4807 | if (s->lexlevel == level && (index < usymId_fromInt (s->nentries))) |
616915dd | 4808 | { |
4809 | ue = s->entries[index]; | |
4810 | ||
4811 | if (uentry_isValid (ue)) | |
4812 | { | |
4813 | if (s != otab) | |
4814 | { | |
4815 | while (!usymtab_isBranch (otab)) | |
4816 | { | |
4817 | otab = usymtab_dropEnv (otab); | |
4818 | ||
4819 | if (otab == GLOBAL_ENV) | |
4820 | { | |
4821 | return ue; | |
4822 | } | |
4823 | } | |
4824 | ||
4825 | ue = usymtab_addRefEntry (otab, uentry_rawName (ue)); | |
4826 | } | |
4827 | else | |
4828 | { | |
28bf4b0b | 4829 | } |
616915dd | 4830 | } |
28bf4b0b | 4831 | |
616915dd | 4832 | return ue; |
4833 | } | |
4834 | ||
4835 | ||
b73d1009 | 4836 | if (index >= usymId_fromInt (s->nentries)) |
616915dd | 4837 | { |
4838 | return uentry_undefined; | |
4839 | } | |
4840 | ||
4841 | llassert (!uentry_isUndefined (s->entries[index])); | |
4842 | ||
4843 | return s->entries[index]; | |
4844 | } | |
4845 | ||
4846 | /* | |
4847 | ** looking up entries | |
4848 | ** | |
4849 | ** If entry is inside a branch, then copy it, and put it into | |
4850 | ** the branch table. | |
4851 | */ | |
4852 | ||
4853 | static | |
b73d1009 | 4854 | int refTable_lookup (/*@notnull@*/ usymtab ut, int level, usymId index) |
616915dd | 4855 | { |
4856 | refTable rt = ut->reftable; | |
4857 | int i; | |
4858 | ||
4859 | llassert (rt != NULL); | |
4860 | ||
616915dd | 4861 | for (i = 0; i < ut->nentries; i++) |
4862 | { | |
b73d1009 | 4863 | if (rt[i]->level == level && rt[i]->index == usymId_toInt (index)) |
616915dd | 4864 | { |
28bf4b0b | 4865 | return i; |
616915dd | 4866 | } |
4867 | } | |
28bf4b0b | 4868 | |
4869 | return NOT_FOUND; | |
616915dd | 4870 | } |
4871 | ||
4872 | static | |
4873 | /*@only@*/ refentry refentry_create (int level, int index) | |
4874 | { | |
4875 | refentry r = (refentry) dmalloc (sizeof (*r)); | |
4876 | ||
4877 | r->level = level; | |
4878 | r->index = index; | |
4879 | ||
4880 | return r; | |
4881 | } | |
4882 | ||
4883 | static /*@dependent@*/ /*@exposed@*/ uentry | |
4884 | usymtab_addRefEntry (/*@notnull@*/ usymtab s, cstring k) | |
4885 | { | |
616915dd | 4886 | usymtab ut = s; |
4887 | ||
28bf4b0b | 4888 | if (ut->reftable == NULL) |
4889 | { | |
4890 | DPRINTF (("Adding ref entry without reftable: %s", k)); | |
4891 | return uentry_undefined; | |
4892 | } | |
616915dd | 4893 | |
28bf4b0b | 4894 | llassert (ut->reftable != NULL); |
4895 | ||
616915dd | 4896 | while (s != GLOBAL_ENV) |
4897 | { | |
b73d1009 | 4898 | usymId eindex = usymtab_getIndex (s, k); |
616915dd | 4899 | |
b73d1009 | 4900 | if (usymtab_indexFound (eindex)) |
616915dd | 4901 | { |
4902 | uentry current = s->entries[eindex]; | |
4903 | ||
4904 | if (uentry_isVar (current) && !ctype_isFunction (uentry_getType (current))) | |
4905 | { | |
4906 | uentry ue; | |
4907 | ||
28bf4b0b | 4908 | DPRINTF (("Here: copying %s", uentry_unparse (current))); |
6fcd0b1e | 4909 | if (uentry_isNonLocal (current)) |
4910 | { | |
4911 | ue = uentry_copy (current); | |
4912 | } | |
4913 | else | |
4914 | { | |
4915 | ue = uentry_copyNoSave (current); | |
4916 | } | |
4917 | ||
28bf4b0b | 4918 | DPRINTF (("Here: copying %s", uentry_unparse (ue))); |
616915dd | 4919 | usymtab_addEntryQuiet (ut, ue); |
28bf4b0b | 4920 | DPRINTF (("Okay...")); |
4921 | ||
616915dd | 4922 | if (s->reftable != NULL) |
4923 | { | |
4924 | refentry ref = s->reftable[eindex]; | |
616915dd | 4925 | |
4926 | ut->reftable[ut->nentries - 1] | |
4927 | = refentry_create (ref->level, ref->index); | |
4928 | } | |
4929 | else | |
4930 | { | |
4931 | ut->reftable[ut->nentries - 1] | |
b73d1009 | 4932 | = refentry_create (s->lexlevel, usymId_toInt (eindex)); |
616915dd | 4933 | } |
4934 | ||
4935 | return (ue); | |
4936 | } | |
4937 | else | |
4938 | { | |
4939 | return (current); | |
4940 | } | |
4941 | } | |
4942 | ||
4943 | s = usymtab_dropEnv (s); | |
4944 | } | |
4945 | ||
4946 | return uentry_undefined; | |
4947 | } | |
4948 | ||
4949 | static uentry usymtab_lookupAux (usymtab s, cstring k) | |
4950 | { | |
4951 | DPRINTF (("Lookup: %s", k)); | |
4952 | ||
4953 | while (s != GLOBAL_ENV) | |
4954 | { | |
b73d1009 | 4955 | usymId eindex = usymtab_getIndex (s, k); |
616915dd | 4956 | |
b73d1009 | 4957 | if (usymtab_indexFound (eindex)) |
616915dd | 4958 | { |
4959 | uentry ret = s->entries[eindex]; | |
28bf4b0b | 4960 | # if 0 |
4961 | ||
616915dd | 4962 | |
28bf4b0b | 4963 | if (s->kind == US_TBRANCH |
4964 | || s->kind == US_FBRANCH | |
4965 | || s->kind == US_CBRANCH) | |
4966 | /* uentry_isGlobalVariable (ret) && os->lexlevel > fileScope) */ | |
4967 | { | |
4968 | uentry ret; | |
4969 | DPRINTF (("Adding global ref entry: %s", k)); | |
4970 | ret = usymtab_addRefEntry (os, k); | |
4971 | DPRINTF (("Adding ref entry: %s", uentry_unparseFull (ret))); | |
4972 | return ret; | |
4973 | } | |
4974 | ||
4975 | # endif | |
616915dd | 4976 | DPRINTF (("Found: %s", uentry_unparseFull (ret))); |
4977 | return (ret); | |
4978 | } | |
28bf4b0b | 4979 | |
616915dd | 4980 | if (s->kind == US_TBRANCH || s->kind == US_FBRANCH |
4981 | || s->kind == US_CBRANCH) | |
4982 | { | |
28bf4b0b | 4983 | /* why isn't this os??? */ |
616915dd | 4984 | uentry ret = usymtab_addRefEntry (s, k); |
28bf4b0b | 4985 | DPRINTF (("Adding ref entry: %s", uentry_unparseFull (ret))); |
616915dd | 4986 | return ret; |
4987 | } | |
4988 | ||
4989 | s = s->env; | |
4990 | } | |
4991 | ||
4992 | return uentry_undefined; | |
4993 | } | |
4994 | ||
4995 | static /*@dependent@*/ /*@exposed@*/ uentry | |
28bf4b0b | 4996 | usymtab_lookupQuietAux (usymtab s, cstring k, bool noalt) |
616915dd | 4997 | { |
616915dd | 4998 | while (s != GLOBAL_ENV) |
4999 | { | |
b73d1009 | 5000 | usymId eindex = usymtab_getIndex (s, k); |
616915dd | 5001 | |
b73d1009 | 5002 | if (usymtab_indexFound (eindex)) |
616915dd | 5003 | { |
5004 | uentry ret = s->entries[eindex]; | |
5005 | return (ret); | |
5006 | } | |
5007 | ||
28bf4b0b | 5008 | if (noalt && usymtab_isBranch (s)) |
5009 | { | |
5010 | s = usymtab_dropEnv (s); | |
5011 | } | |
5012 | else | |
5013 | { | |
b73d1009 | 5014 | llassert (s != NULL); |
28bf4b0b | 5015 | s = s->env; |
5016 | } | |
616915dd | 5017 | } |
5018 | ||
5019 | return uentry_undefined; | |
5020 | } | |
5021 | ||
28bf4b0b | 5022 | static /*@exposed@*/ /*@dependent@*/ uentry |
5023 | usymtab_lookupQuiet (usymtab s, cstring k) | |
5024 | { | |
5025 | return usymtab_lookupQuietAux (s, k, FALSE); | |
5026 | } | |
5027 | ||
5028 | static /*@exposed@*/ /*@dependent@*/ uentry | |
5029 | usymtab_lookupQuietNoAlt (usymtab s, cstring k) | |
5030 | { | |
5031 | return usymtab_lookupQuietAux (s, k, TRUE); | |
5032 | } | |
5033 | ||
616915dd | 5034 | /*@dependent@*/ /*@observer@*/ uentry |
5035 | usymtab_lookupSafe (cstring k) | |
5036 | /*@globals utab@*/ | |
5037 | { | |
5038 | DPRINTF (("Lookup safe: %s", k)); | |
5039 | return (usymtab_lookupAux (utab, k)); | |
5040 | } | |
5041 | ||
5042 | uentry | |
5043 | usymtab_lookupExpose (cstring k) | |
5044 | /*@globals utab@*/ | |
5045 | { | |
5046 | uentry ce = usymtab_lookupAux (utab, k); | |
5047 | ||
5048 | if (uentry_isUndefined (ce)) | |
5049 | { | |
5050 | llfatalbug (message ("usymtab_lookup: not found: *%s*", k)); | |
5051 | } | |
5052 | ||
5053 | if (uentry_isPriv (ce)) | |
5054 | { | |
5055 | llfatalbug (message ("usymtab_lookup: private: *%s*", k)); | |
5056 | } | |
5057 | ||
5058 | return ce; | |
5059 | } | |
5060 | ||
5061 | uentry usymtab_lookupExposeGlob (cstring k) | |
5062 | { | |
5063 | return (usymtab_lookupGlobSafe (k)); | |
5064 | } | |
5065 | ||
5066 | uentry usymtab_lookupGlob (cstring k) | |
5067 | /*@globals globtab@*/ | |
5068 | { | |
5069 | uentry ce = usymtab_lookupAux (globtab, k); | |
5070 | ||
5071 | if (uentry_isUndefined (ce)) | |
5072 | llfatalbug (message ("usymtab_lookup: not found: %s", k)); | |
5073 | ||
5074 | if (uentry_isPriv (ce)) | |
5075 | llfatalbug (message ("usymtab_lookup: private: %s", k)); | |
5076 | ||
6483a926 | 5077 | DPRINTF (("Lookup global: %s", uentry_unparseFull (ce))); |
616915dd | 5078 | return ce; |
5079 | } | |
5080 | ||
5081 | /*@observer@*/ uentry | |
5082 | usymtab_lookupGlobSafe (cstring k) | |
5083 | /*@globals globtab@*/ | |
5084 | { | |
5085 | uentry ce = usymtab_lookupAux (globtab, k); | |
6483a926 | 5086 | DPRINTF (("Lookup global: %s", uentry_unparseFull (ce))); |
616915dd | 5087 | return ce; |
5088 | } | |
5089 | ||
5090 | uentry usymtab_lookupEither (cstring k) | |
5091 | /*@globals utab@*/ | |
5092 | { | |
5093 | uentry ce = usymtab_lookupSafe (k); | |
5094 | ||
5095 | if (uentry_isUndefined (ce)) | |
5096 | llfatalerror (message ("usymtab_lookup: not found: %s", k)); | |
5097 | ||
6483a926 | 5098 | DPRINTF (("Lookup either: %s", uentry_unparseFull (ce))); |
616915dd | 5099 | return ce; |
5100 | } | |
5101 | ||
616915dd | 5102 | ctype |
5103 | usymtab_lookupType (cstring k) | |
5104 | /*@globals globtab@*/ | |
5105 | { | |
b73d1009 | 5106 | typeId uid = usymtab_getTypeId (k); |
616915dd | 5107 | |
b73d1009 | 5108 | if (typeId_isInvalid (uid)) |
616915dd | 5109 | { |
5110 | llcontbug (message ("usymtab_lookupType: not found: %s", k)); | |
5111 | return ctype_unknown; | |
5112 | } | |
5113 | ||
5114 | return (uentry_getRealType (usymtab_getTypeEntry (uid))); | |
5115 | } | |
616915dd | 5116 | |
5117 | ctype | |
5118 | usymtab_lookupAbstractType (cstring k) /*@globals globtab@*/ | |
5119 | { | |
b73d1009 | 5120 | typeId uid = usymtab_getTypeId (k); |
616915dd | 5121 | |
b73d1009 | 5122 | if (typeId_isInvalid (uid)) |
616915dd | 5123 | { |
5124 | llcontbug (message ("usymtab_lookupType: not found: %s", k)); | |
5125 | return ctype_unknown; | |
5126 | } | |
5127 | ||
5128 | return (uentry_getAbstractType (usymtab_getTypeEntry (uid))); | |
5129 | } | |
5130 | ||
5131 | /* | |
5132 | ** if there is an unnamed lcl-specified struct tag matching | |
5133 | ** the uentryList, return its datatype. Otherwise, returns | |
5134 | ** ctype_undefined. | |
5135 | */ | |
5136 | ||
5137 | ctype | |
5138 | usymtab_structFieldsType (uentryList f) | |
5139 | /*@globals globtab@*/ | |
5140 | { | |
5141 | return (usymtab_suFieldsType (f, TRUE)); | |
5142 | } | |
5143 | ||
5144 | ctype | |
5145 | usymtab_unionFieldsType (uentryList f) | |
5146 | /*@globals globtab@*/ | |
5147 | { | |
5148 | return (usymtab_suFieldsType (f, FALSE)); | |
5149 | } | |
5150 | ||
5151 | static ctype | |
5152 | usymtab_suFieldsType (uentryList f, bool isStruct) | |
5153 | /*@globals globtab@*/ | |
5154 | { | |
5155 | int i; | |
5156 | ||
28bf4b0b | 5157 | DPRINTF (("Fields: %s", uentryList_unparse (f))); |
5158 | ||
5159 | if (fileloc_isSpec (g_currentloc)) | |
5160 | { | |
5161 | return (ctype_undefined); | |
5162 | } | |
616915dd | 5163 | |
5164 | for (i = 0; i < globtab->nentries; i++) | |
5165 | { | |
5166 | uentry current = globtab->entries[i]; | |
5167 | ||
5168 | if ((isStruct | |
5169 | ? uentry_isStructTag (current) : uentry_isUnionTag (current))) | |
5170 | { | |
5171 | if (isFakeTag (uentry_rawName (current))) | |
5172 | { | |
5173 | ctype ct = uentry_getType (current); | |
28bf4b0b | 5174 | |
5175 | DPRINTF (("Check: %s", ctype_unparse (ct))); | |
616915dd | 5176 | |
5177 | if ((isStruct ? ctype_isStruct (ct) : ctype_isUnion (ct)) | |
28bf4b0b | 5178 | && |
5179 | (uentry_isSpecified (current) | |
5180 | && uentryList_equivFields (f, ctype_getFields (ct)))) | |
616915dd | 5181 | { |
28bf4b0b | 5182 | return uentry_getAbstractType (current); |
5183 | } | |
5184 | else | |
5185 | { | |
5186 | ; | |
616915dd | 5187 | } |
5188 | } | |
5189 | } | |
5190 | } | |
5191 | ||
5192 | return ctype_undefined; | |
5193 | } | |
5194 | ||
5195 | ctype | |
5196 | usymtab_enumEnumNameListType (enumNameList f) | |
5197 | /*@globals globtab@*/ | |
5198 | { | |
5199 | int i; | |
5200 | ||
5201 | for (i = 0; i < globtab->nentries; i++) | |
5202 | { | |
5203 | uentry current = globtab->entries[i]; | |
5204 | ||
5205 | if (uentry_isEnumTag (current)) | |
5206 | { | |
5207 | if (isFakeTag (uentry_rawName (current))) | |
5208 | { | |
5209 | ctype ct = uentry_getType (current); | |
5210 | ||
5211 | if (ctype_isEnum (ct) && (enumNameList_match (f, ctype_elist (ct)))) | |
5212 | { | |
5213 | return uentry_getType (current); | |
5214 | } | |
5215 | } | |
5216 | } | |
5217 | } | |
5218 | ||
5219 | return ctype_undefined; | |
5220 | } | |
5221 | ||
5222 | bool | |
5223 | usymtab_exists (cstring k) | |
5224 | /*@globals utab@*/ | |
5225 | { | |
5226 | uentry ce = usymtab_lookupSafe (k); | |
616915dd | 5227 | return (!(uentry_isUndefined (ce)) && !(uentry_isPriv (ce))); |
5228 | } | |
5229 | ||
5230 | bool | |
5231 | usymtab_existsReal (cstring k) | |
5232 | /*@globals utab@*/ | |
5233 | { | |
5234 | uentry ce = usymtab_lookupSafe (k); | |
5235 | ||
5236 | return (!(uentry_isUndefined (ce)) | |
5237 | && !(uentry_isPriv (ce)) | |
5238 | && !(uentry_isExpandedMacro (ce))); | |
5239 | } | |
5240 | ||
5241 | bool | |
5242 | usymtab_existsGlob (cstring k) | |
5243 | /*@globals globtab@*/ | |
5244 | { | |
5245 | uentry ce = usymtab_lookupAux (globtab, k); | |
5246 | ||
5247 | return (!(uentry_isUndefined (ce)) && !(uentry_isPriv (ce))); | |
5248 | } | |
5249 | ||
616915dd | 5250 | bool |
5251 | usymtab_existsEither (cstring k) | |
5252 | /*@globals utab@*/ | |
5253 | { | |
5254 | uentry ce = usymtab_lookupAux (utab, k); | |
5255 | ||
5256 | return (uentry_isValid (ce)); | |
5257 | } | |
5258 | ||
5259 | bool | |
5260 | usymtab_existsGlobEither (cstring k) | |
5261 | /*@globals globtab@*/ | |
5262 | { | |
5263 | uentry ce = usymtab_lookupAux (globtab, k); | |
5264 | ||
5265 | return (uentry_isValid (ce)); | |
5266 | } | |
616915dd | 5267 | |
5268 | bool | |
5269 | usymtab_existsType (cstring k) | |
5270 | /*@globals globtab@*/ | |
5271 | { | |
5272 | uentry ce = usymtab_lookupAux (globtab, k); | |
5273 | ||
5274 | return (!(uentry_isUndefined (ce)) && !(uentry_isPriv (ce)) && uentry_isDatatype (ce)); | |
5275 | } | |
5276 | ||
5277 | bool | |
5278 | usymtab_existsTypeEither (cstring k) | |
5279 | /*@globals globtab@*/ | |
5280 | { | |
28bf4b0b | 5281 | uentry ce; |
5282 | ce = usymtab_lookupAux (globtab, k); | |
5283 | return (uentry_isValid (ce) && uentry_isDatatype (ce)); | |
616915dd | 5284 | } |
5285 | ||
5286 | bool | |
5287 | usymtab_existsStructTag (cstring k) /*@globals globtab@*/ | |
5288 | { | |
5289 | cstring sname = makeStruct (k); | |
5290 | uentry ce = usymtab_lookupAux (globtab, sname); | |
28bf4b0b | 5291 | cstring_free (sname); |
616915dd | 5292 | return (!(uentry_isUndefined (ce)) && !(uentry_isPriv (ce))); |
5293 | } | |
5294 | ||
5295 | bool | |
5296 | usymtab_existsUnionTag (cstring k) /*@globals globtab@*/ | |
5297 | { | |
5298 | cstring uname = makeUnion (k); | |
5299 | uentry ce = usymtab_lookupAux (globtab, uname); | |
5300 | ||
5301 | cstring_free (uname); | |
5302 | ||
5303 | return (!(uentry_isUndefined (ce)) && !(uentry_isPriv (ce))); | |
5304 | } | |
5305 | ||
5306 | bool | |
5307 | usymtab_existsEnumTag (cstring k) /*@globals globtab@*/ | |
5308 | { | |
5309 | cstring ename = makeEnum (k); | |
5310 | uentry ce = usymtab_lookupAux (globtab, ename); | |
5311 | ||
5312 | cstring_free (ename); | |
5313 | return (!(uentry_isUndefined (ce)) && !(uentry_isPriv (ce))); | |
5314 | } | |
5315 | ||
616915dd | 5316 | bool usymtab_existsVar (cstring k) |
5317 | /*@globals utab@*/ | |
5318 | { | |
5319 | uentry ce = usymtab_lookupSafe (k); | |
5320 | ||
5321 | return (!(uentry_isUndefined (ce)) && !(uentry_isPriv (ce)) && (uentry_isVar (ce))); | |
5322 | } | |
616915dd | 5323 | |
5324 | /* | |
5325 | ** destructors | |
5326 | */ | |
5327 | ||
5328 | static void | |
5329 | refTable_free (/*@only@*/ /*@null@*/ refTable x, int nentries) | |
5330 | { | |
5331 | if (x != NULL) | |
5332 | { | |
5333 | int i; | |
5334 | ||
5335 | for (i = 0; i < nentries; i++) | |
5336 | { | |
5337 | sfree (x[i]); | |
5338 | } | |
5339 | ||
5340 | sfree (x); | |
5341 | } | |
5342 | } | |
5343 | ||
5344 | static void | |
5345 | usymtab_freeLevel (/*@notnull@*/ /*@only@*/ usymtab u) | |
5346 | /*@globals globtab, utab, filetab@*/ | |
5347 | { | |
5348 | int i; | |
5349 | ||
6fcd0b1e | 5350 | DPRINTF (("Free level [%p]", u)); |
616915dd | 5351 | aliasTable_free (u->aliases); |
28bf4b0b | 5352 | |
616915dd | 5353 | refTable_free (u->reftable, u->nentries); |
5354 | ||
5355 | if (u == filetab || u == globtab) | |
5356 | { | |
5357 | for (i = 0; i < u->nentries; i++) | |
5358 | { | |
6fcd0b1e | 5359 | DPRINTF (("Free complete: %d", i)); |
5360 | DPRINTF (("Uentry: %s", uentry_unparse (u->entries[i]))); | |
616915dd | 5361 | uentry_freeComplete (u->entries[i]); |
6fcd0b1e | 5362 | u->entries[i] = uentry_undefined; |
616915dd | 5363 | } |
5364 | } | |
5365 | else | |
5366 | { | |
5367 | for (i = 0; i < u->nentries; i++) | |
5368 | { | |
5369 | uentry_free (u->entries[i]); | |
6fcd0b1e | 5370 | u->entries[i] = uentry_undefined; |
616915dd | 5371 | } |
5372 | } | |
5373 | ||
5374 | guardSet_free (u->guards); | |
5375 | sfree (u->entries); | |
5376 | ||
5377 | if (u != globtab | |
5378 | && u != utab | |
5379 | && u != filetab) | |
5380 | { | |
28bf4b0b | 5381 | llassert (!cstringTable_isDefined (u->htable)); |
616915dd | 5382 | } |
5383 | ||
6fcd0b1e | 5384 | sfree (u); /* evans 2002-07-12: was inside if */ |
b73d1009 | 5385 | } |
616915dd | 5386 | |
5387 | static void | |
5388 | usymtab_freeAux (/*@only@*/ usymtab u) | |
5389 | /*@globals globtab, utab, filetab@*/ | |
5390 | /*@modifies u@*/ | |
5391 | { | |
5392 | while (u != GLOBAL_ENV) | |
5393 | { | |
5394 | usymtab t = u->env; | |
5395 | usymtab_freeLevel (u); | |
5396 | u = t; | |
5397 | /*@-branchstate@*/ | |
5398 | } | |
5399 | /*@=branchstate@*/ | |
5400 | } | |
5401 | ||
5402 | void usymtab_free () | |
5403 | /*@globals killed utab, globtab, filetab@*/ | |
5404 | /*@modifies utab@*/ | |
5405 | { | |
5406 | dbgfree = TRUE; | |
5407 | usymtab_freeAux (utab); | |
6fcd0b1e | 5408 | utab = usymtab_undefined; |
b73d1009 | 5409 | /*@-globstate@*/ |
5410 | } /*@=globstate@*/ /* Splint cannot tell that utab is killed */ | |
616915dd | 5411 | |
5412 | static int usymtab_lexicalLevel (void) /*@globals utab@*/ | |
5413 | { | |
5414 | return (utab->lexlevel); | |
5415 | } | |
5416 | ||
5417 | bool usymtab_inGlobalScope () /*@globals utab, globtab@*/ | |
5418 | { | |
5419 | return (utab == globtab); | |
5420 | } | |
5421 | ||
5422 | bool usymtab_inFileScope () /*@globals utab@*/ | |
5423 | { | |
5424 | return (utab->lexlevel == fileScope); | |
5425 | } | |
5426 | ||
5427 | bool usymtab_inFunctionScope () /*@globals utab@*/ | |
5428 | { | |
5429 | return (utab->lexlevel == functionScope); | |
5430 | } | |
5431 | ||
616915dd | 5432 | void |
5433 | usymtab_replaceEntry (uentry s) | |
5434 | /*@globals utab, globtab@*/ | |
5435 | /*@modifies utab, s@*/ | |
5436 | { | |
5437 | usymtab_replaceEntryAux (utab, s); | |
5438 | } | |
616915dd | 5439 | |
5440 | bool | |
b73d1009 | 5441 | usymtab_matchForwardStruct (typeId u1, typeId u2) |
616915dd | 5442 | /*@globals globtab@*/ |
5443 | { | |
5444 | uentry ue1 = usymtab_getTypeEntry (u1); | |
5445 | uentry ue2 = usymtab_getTypeEntry (u2); | |
5446 | ||
5447 | if (uentry_isAnyTag (ue2)) | |
5448 | { | |
5449 | ctype reptype = uentry_getType (ue1); | |
5450 | ||
5451 | if (ctype_isPointer (reptype)) | |
5452 | { | |
5453 | ctype repbase = ctype_getBaseType (reptype); | |
5454 | ||
5455 | if (ctype_isUA (repbase)) | |
5456 | { | |
5457 | typeId rtuid = ctype_typeId (repbase); | |
5458 | ||
5459 | if (u2 == rtuid) return TRUE; | |
5460 | ||
b73d1009 | 5461 | if (typeId_isValid (rtuid)) |
616915dd | 5462 | { |
b73d1009 | 5463 | reptype = uentry_getType (usymtab_getTypeEntry (rtuid)); |
616915dd | 5464 | return (ctype_isUA (reptype) && (u2 == (ctype_typeId (reptype)))); |
5465 | } | |
5466 | } | |
5467 | } | |
5468 | } | |
5469 | ||
5470 | return FALSE; | |
5471 | } | |
5472 | ||
5473 | void usymtab_addGuards (guardSet guards) | |
5474 | /*@modifies utab@*/ | |
5475 | { | |
5476 | utab->guards = guardSet_union (utab->guards, guards); | |
5477 | } | |
5478 | ||
5479 | static bool usymtab_isGuardedAux (sRef s) | |
5480 | /*@globals utab@*/ | |
5481 | { | |
5482 | usymtab tab = utab; | |
5483 | sRef base = sRef_getRootBase (s); | |
5484 | int lowlevel = paramsScope; | |
5485 | int baselevel = sRef_lexLevel (base); | |
5486 | ||
5487 | if (sRef_isCvar (base)) | |
5488 | { | |
5489 | lowlevel = baselevel; | |
5490 | if (lowlevel < paramsScope) lowlevel = paramsScope; | |
5491 | } | |
5492 | ||
5493 | while (tab->lexlevel >= lowlevel) | |
5494 | { | |
2209bcb7 | 5495 | DPRINTF (("Is guarded? [%s] %s", |
5496 | guardSet_unparse (tab->guards), | |
5497 | sRef_unparseFull (s))); | |
5498 | ||
616915dd | 5499 | if (guardSet_isGuarded (tab->guards, s)) |
5500 | { | |
5501 | /* | |
5502 | if (!sRef_definitelyNull (s)) | |
5503 | { | |
5504 | sRef_setNotNull (s, fileloc_undefined); | |
5505 | } | |
5506 | */ | |
5507 | return TRUE; | |
5508 | } | |
5509 | ||
5510 | tab = usymtab_dropEnv (tab); | |
5511 | } | |
5512 | ||
5513 | return FALSE; | |
5514 | } | |
5515 | ||
5516 | void usymtab_unguard (sRef s) /*@modifies utab@*/ | |
5517 | { | |
5518 | usymtab tab = utab; | |
5519 | sRef base = sRef_getRootBase (s); | |
5520 | int lowlevel = paramsScope; | |
5521 | int baselevel = sRef_lexLevel (base); | |
5522 | ||
5523 | if (sRef_isCvar (base)) | |
5524 | { | |
5525 | lowlevel = baselevel; | |
5526 | if (lowlevel < paramsScope) lowlevel = paramsScope; | |
5527 | } | |
5528 | ||
5529 | while (tab->lexlevel >= lowlevel) | |
5530 | { | |
5531 | if (guardSet_isGuarded (tab->guards, s)) | |
5532 | { | |
5533 | guardSet_delete (tab->guards, s); | |
5534 | } | |
5535 | ||
5536 | tab = usymtab_dropEnv (tab); | |
5537 | } | |
5538 | } | |
5539 | ||
5540 | bool usymtab_isGuarded (sRef s) | |
5541 | { | |
2209bcb7 | 5542 | DPRINTF (("Is guarded? %s", sRef_unparseFull (s))); |
616915dd | 5543 | return (sRef_aliasCompleteSimplePred (usymtab_isGuardedAux, s)); |
5544 | } | |
5545 | ||
28bf4b0b | 5546 | bool usymtab_isDefinitelyNull (sRef s) |
616915dd | 5547 | { |
28bf4b0b | 5548 | return (sRef_aliasCheckSimplePred (usymtab_isDefinitelyNullAux, s)); |
616915dd | 5549 | } |
5550 | ||
28bf4b0b | 5551 | bool usymtab_isDefinitelyNullDeep (sRef s) |
616915dd | 5552 | { |
28bf4b0b | 5553 | return (sRef_deepPred (usymtab_isDefinitelyNull, s)); |
616915dd | 5554 | } |
5555 | ||
28bf4b0b | 5556 | static bool usymtab_isDefinitelyNullAux (sRef s) |
616915dd | 5557 | /*@globals utab@*/ |
5558 | { | |
5559 | usymtab tab = utab; | |
5560 | sRef base = sRef_getRootBase (s); | |
5561 | int lowlevel = paramsScope; | |
5562 | ||
5563 | if (sRef_isCvar (base)) | |
5564 | { | |
5565 | lowlevel = sRef_lexLevel (base); | |
5566 | if (lowlevel < paramsScope) lowlevel = paramsScope; | |
5567 | } | |
5568 | ||
5569 | while (tab->lexlevel >= lowlevel) | |
5570 | { | |
28bf4b0b | 5571 | if (guardSet_mustBeNull (tab->guards, s)) |
616915dd | 5572 | { |
5573 | return TRUE; | |
5574 | } | |
5575 | ||
5576 | while (tab->kind == US_CBRANCH) | |
5577 | { | |
5578 | tab = tab->env; | |
5579 | } | |
5580 | ||
5581 | llassert (usymtab_isDefined (tab)); | |
5582 | ||
5583 | if (tab->kind == US_FBRANCH) | |
5584 | { | |
5585 | tab = tab->env; | |
5586 | llassert (tab->kind == US_TBRANCH); | |
5587 | } | |
5588 | ||
5589 | tab = tab->env; | |
5590 | } | |
5591 | ||
5592 | return FALSE; | |
5593 | } | |
5594 | ||
5595 | void | |
5596 | usymtab_printGuards () | |
5597 | /*@globals utab, globtab@*/ | |
5598 | { | |
5599 | usymtab ttab = utab; | |
5600 | ||
5601 | while (ttab != globtab) | |
5602 | { | |
5603 | llmsg (message ("Guards [%d]: %q", ttab->lexlevel, | |
5604 | guardSet_unparse (ttab->guards))); | |
5605 | ttab = ttab->env; | |
5606 | } | |
5607 | } | |
5608 | ||
5609 | void | |
5610 | usymtab_displayAllUses () | |
5611 | /*@globals utab, globtab@*/ | |
5612 | { | |
5613 | usymtab copy; | |
5614 | ||
5615 | /* only in top scope */ | |
5616 | llassert (utab == globtab); | |
5617 | ||
5618 | /* need a copy, so order is not messed up by sort! */ | |
5619 | copy = usymtab_shallowCopy (globtab); | |
5620 | ||
5621 | qsort (copy->entries, (size_t)copy->nentries, | |
5622 | sizeof (*copy->entries), (int (*)(const void *, const void *)) uentry_xcompareuses); | |
5623 | ||
5624 | usymtab_entries (copy, ue) | |
5625 | { | |
37ae0b5e | 5626 | if (uentry_isValid (ue) && !uentry_isGlobalMarker (ue)) |
616915dd | 5627 | { |
5628 | filelocList uses = uentry_getUses (ue); | |
5629 | int size = filelocList_realSize (uses); | |
5630 | ||
5631 | if (fileloc_isDefined (uentry_whereDefined (ue)) | |
5632 | && !fileloc_isLib (uentry_whereDefined (ue)) | |
5633 | && (size > 0)) | |
5634 | { | |
28bf4b0b | 5635 | llmsg (message ("%q (%q), %d use%&:\n %q", |
616915dd | 5636 | uentry_getName (ue), |
5637 | fileloc_unparse (uentry_whereDefined (ue)), | |
5638 | size, filelocList_unparseUses (uses))); | |
5639 | } | |
5640 | } | |
5641 | } end_usymtab_entries; | |
5642 | ||
5643 | usymtab_shallowFree (copy); | |
5644 | } | |
5645 | ||
5646 | static /*@dependent@*/ /*@exposed@*/ usymtab | |
5647 | usymtab_getFileTab () | |
5648 | /*@globals filetab@*/ | |
5649 | { | |
5650 | llassert (filetab != NULL); | |
5651 | ||
5652 | return filetab; | |
5653 | } | |
5654 | ||
5655 | /*@only@*/ cstring | |
5656 | usymtab_unparseStack () | |
5657 | /*@globals utab@*/ | |
5658 | { | |
5659 | return (usymtab_unparseStackTab (utab)); | |
5660 | } | |
5661 | ||
5662 | static /*@only@*/ cstring | |
5663 | usymtab_unparseStackTab (usymtab t) | |
5664 | { | |
5665 | bool firstOne = TRUE; | |
5666 | cstring ret = cstring_makeLiteral ("["); | |
5667 | ||
5668 | while (t != GLOBAL_ENV) | |
5669 | { | |
5670 | if (firstOne) | |
5671 | { | |
5672 | ret = message ("%q %q", ret, usymtab_typeName (t)); | |
5673 | firstOne = FALSE; | |
5674 | } | |
5675 | else | |
5676 | { | |
5677 | ret = message ("%q, %q", ret, usymtab_typeName (t)); | |
5678 | } | |
5679 | t = t->env; | |
5680 | } | |
5681 | ||
5682 | ret = message ("%q ]", ret); | |
5683 | return ret; | |
5684 | } | |
5685 | ||
5686 | static /*@only@*/ cstring | |
5687 | usymtab_typeName (/*@notnull@*/ usymtab t) | |
5688 | { | |
5689 | switch (t->kind) | |
5690 | { | |
5691 | case US_GLOBAL: return cstring_makeLiteral ("global"); | |
5692 | case US_NORMAL: return cstring_makeLiteral ("normal"); | |
5693 | case US_TBRANCH: return cstring_makeLiteral ("true"); | |
5694 | case US_FBRANCH: return cstring_makeLiteral ("false"); | |
5695 | case US_CBRANCH: return cstring_makeLiteral ("case"); | |
5696 | case US_SWITCH: return cstring_makeLiteral ("switch"); | |
5697 | } | |
5698 | ||
5699 | BADEXIT; | |
5700 | } | |
5701 | ||
28bf4b0b | 5702 | void usymtab_addMustAlias (/*@exposed@*/ sRef s, /*@exposed@*/ sRef al) |
616915dd | 5703 | /*@modifies utab@*/ |
5704 | { | |
28bf4b0b | 5705 | if (!sRef_similar (s, al)) |
616915dd | 5706 | { |
28bf4b0b | 5707 | usymtab_addForceMustAlias (s, al); |
616915dd | 5708 | } |
5709 | } | |
5710 | ||
5711 | /* | |
5712 | ** Same as usymtab_addMustAlias, except does not check sRef_isSimilar. | |
5713 | */ | |
5714 | ||
28bf4b0b | 5715 | void usymtab_addForceMustAlias (/*@exposed@*/ sRef s, /*@exposed@*/ sRef al) |
616915dd | 5716 | /*@modifies utab@*/ |
5717 | { | |
393e573f | 5718 | /* evans 2002-03-3: was sRef_isMeaningful -- but we need to keep aliases for new storage also! */ |
616915dd | 5719 | if (sRef_isMeaningful (s) |
5720 | && sRef_isMeaningful (al) | |
5721 | && !(sRef_isConst (s) || sRef_isConst (al)) | |
5722 | && !(sRef_isAddress (al) && sRef_isDirectParam (sRef_getBase (al)))) | |
5723 | { | |
5724 | utab->aliases = aliasTable_addMustAlias (utab->aliases, s, al); | |
5725 | DPRINTF (("Must alias: %s", aliasTable_unparse (utab->aliases))); | |
5726 | ||
5727 | /* | |
5728 | ** for local variable, aliasing is symmetric | |
5729 | */ | |
5730 | ||
5731 | if (sRef_isLocalVar (s) && sRef_isLocalVar (al)) | |
5732 | { | |
5733 | utab->aliases = aliasTable_addMustAlias (utab->aliases, al, s); | |
5734 | } | |
5735 | } | |
5736 | else | |
5737 | { | |
393e573f | 5738 | DPRINTF (("Not aliasing! %s / %s", sRef_unparseFull (s), sRef_unparseFull (al))); |
5739 | DPRINTF (("meaningful: %d %d", sRef_isMeaningful (s), sRef_isMeaningful (al))); | |
616915dd | 5740 | } |
5741 | } | |
5742 | ||
393e573f | 5743 | void usymtab_addReallyForceMustAlias (/*@exposed@*/ sRef s, /*@exposed@*/ sRef al) |
5744 | /*@modifies utab@*/ | |
5745 | { | |
5746 | utab->aliases = aliasTable_addMustAlias (utab->aliases, s, al); | |
5747 | } | |
5748 | ||
616915dd | 5749 | void usymtab_clearAlias (sRef s) |
5750 | /*@modifies utab, s@*/ | |
5751 | { | |
5752 | ||
5753 | aliasTable_clearAliases (utab->aliases, s); | |
5754 | } | |
5755 | ||
5756 | sRefSet usymtab_allAliases (sRef s) | |
5757 | /*@globals utab@*/ | |
5758 | { | |
393e573f | 5759 | if (sRef_isSomewhatMeaningful (s)) |
616915dd | 5760 | { |
5761 | sRefSet ret; | |
616915dd | 5762 | |
5763 | ret = sRefSet_unionFree (aliasTable_aliasedBy (utab->aliases, s), | |
5764 | aliasTable_canAlias (utab->aliases, s)); | |
28bf4b0b | 5765 | return (ret); |
616915dd | 5766 | } |
5767 | else | |
5768 | { | |
28bf4b0b | 5769 | DPRINTF (("NOT A MEANINGFUL SREF!")); |
616915dd | 5770 | return sRefSet_undefined; |
5771 | } | |
5772 | } | |
5773 | ||
5774 | /*@only@*/ sRefSet usymtab_canAlias (sRef s) | |
28bf4b0b | 5775 | /*@globals utab@*/ |
616915dd | 5776 | { |
393e573f | 5777 | if (sRef_isSomewhatMeaningful (s)) |
616915dd | 5778 | { |
5779 | sRefSet res = aliasTable_canAlias (utab->aliases, s); | |
616915dd | 5780 | return res; |
5781 | } | |
28bf4b0b | 5782 | |
616915dd | 5783 | return sRefSet_undefined; |
5784 | } | |
5785 | ||
5786 | /*@only@*/ sRefSet usymtab_aliasedBy (sRef s) | |
28bf4b0b | 5787 | /*@globals utab@*/ |
616915dd | 5788 | { |
5789 | return (aliasTable_aliasedBy (utab->aliases, s)); | |
5790 | } | |
5791 | ||
5792 | /*@only@*/ cstring usymtab_unparseAliases () | |
5793 | /*@globals utab@*/ | |
5794 | { | |
5795 | return (aliasTable_unparse (utab->aliases)); | |
5796 | } | |
5797 | ||
5798 | /* | |
5799 | ** Debugging routines: | |
5800 | ** okay to leak storage here, only for debugging | |
5801 | */ | |
5802 | ||
5803 | /*@-mustfree@*/ | |
5804 | ||
5805 | void | |
5806 | usymtab_printOut (void) | |
5807 | /*@globals utab@*/ | |
5808 | { | |
5809 | int i; | |
5810 | usymtab s = utab; | |
5811 | int depth = 0; | |
5812 | char *ind = mstring_copy (" "); | |
5813 | ||
80489f0a | 5814 | fprintf (g_warningstream, "<<< [symbol table] >>>\n"); |
616915dd | 5815 | |
5816 | while (s != GLOBAL_ENV && s->env != GLOBAL_ENV) | |
5817 | { | |
5818 | cstring tname = usymtab_typeName (s); | |
5819 | ||
5820 | if (depth < 5) | |
5821 | { | |
5822 | ind[depth * 3 + 1] = '\0'; | |
5823 | } | |
5824 | ||
80489f0a | 5825 | fprintf (g_warningstream, "level: %d (%s)\n", s->lexlevel, |
616915dd | 5826 | cstring_toCharsSafe (tname)); |
5827 | ||
5828 | cstring_free (tname); | |
5829 | ||
5830 | for (i = 0; i < s->nentries; i++) | |
5831 | { | |
5832 | cstring us = uentry_unparseFull (s->entries[i]); | |
80489f0a | 5833 | fprintf (g_warningstream, "%s\n", cstring_toCharsSafe (us)); |
616915dd | 5834 | cstring_free (us); |
5835 | } | |
5836 | ||
5837 | if (s->reftable != NULL && s->nentries > 0) | |
5838 | { | |
80489f0a | 5839 | fprintf (g_warningstream, "\t<< Ref table >>\n"); |
616915dd | 5840 | |
5841 | for (i = 0; i < s->nentries; i++) | |
5842 | { | |
80489f0a | 5843 | fprintf (g_warningstream, "\t%s %3d: %d, %d\n", ind, i, |
616915dd | 5844 | s->reftable[i]->level, |
5845 | s->reftable[i]->index); | |
5846 | } | |
5847 | } | |
5848 | ||
5849 | ind[depth * 3 + 1] = ' '; | |
5850 | depth++; | |
5851 | s = s->env; | |
5852 | } | |
80489f0a | 5853 | fprintf (g_warningstream, "<<< end usymtab >>>\n"); |
616915dd | 5854 | mstring_free (ind); |
5855 | return; | |
5856 | } | |
5857 | ||
5858 | void | |
5859 | usymtab_printTypes () | |
5860 | /*@globals globtab@*/ | |
5861 | { | |
5862 | usymtab_printAllAux (globtab); | |
5863 | } | |
5864 | ||
5865 | void | |
5866 | usymtab_printAll (void) | |
5867 | /*@globals utab@*/ | |
5868 | { | |
5869 | usymtab_printAllAux (utab); | |
5870 | } | |
5871 | ||
5872 | static void | |
5873 | usymtab_printAllAux (usymtab s) | |
80489f0a | 5874 | /*@modifies g_warningstream@*/ |
616915dd | 5875 | { |
5876 | int i; | |
5877 | int depth = 0; | |
5878 | char *ind = mstring_copy (" "); | |
5879 | ||
5880 | printf ("[[[ usymtab ]]]"); | |
5881 | ||
5882 | while (s != GLOBAL_ENV) | |
5883 | { | |
5884 | if (depth < 5) | |
5885 | ind[depth * 3 + 1] = '\0'; | |
5886 | ||
5887 | if (s->env == GLOBAL_ENV) | |
5888 | { | |
5889 | int looplow; | |
5890 | ||
5891 | printf ("level: %d / break: %s / exit: %s\n", s->lexlevel, | |
5892 | cstring_toCharsSafe (bool_unparse (s->mustBreak)), | |
5893 | cstring_toCharsSafe (exitkind_unparse (s->exitCode))); | |
5894 | ||
5895 | looplow = 0; | |
5896 | ||
5897 | for (i = looplow; i < s->nentries; i++) | |
5898 | { | |
5899 | printf ("%s%3d. %s\n", ind, i, | |
5900 | cstring_toCharsSafe (uentry_unparseFull (s->entries[i]))); | |
5901 | } | |
5902 | } | |
5903 | else | |
5904 | { | |
5905 | printf ("level: %d / break: %s / exit: %s\n", s->lexlevel, | |
5906 | cstring_toCharsSafe (bool_unparse (s->mustBreak)), | |
5907 | cstring_toCharsSafe (exitkind_unparse (s->exitCode))); | |
5908 | ||
5909 | for (i = 0; i < s->nentries; i++) | |
5910 | { | |
5911 | printf ("%s%3d %s\n", ind, i, | |
5912 | cstring_toCharsSafe (uentry_unparseFull (s->entries[i]))); | |
5913 | } | |
5914 | } | |
5915 | ||
5916 | ind[depth * 3 + 1] = ' '; | |
5917 | depth++; | |
5918 | s = s->env; | |
5919 | } | |
5920 | printf ("----------\n"); | |
5921 | } | |
5922 | ||
5923 | void | |
5924 | usymtab_printComplete () | |
5925 | /*@globals utab@*/ | |
5926 | { | |
5927 | int i; | |
5928 | int depth = 0; | |
5929 | char *ind = mstring_copy (" "); | |
5930 | usymtab s = utab; | |
5931 | ||
5932 | while (s != GLOBAL_ENV) | |
5933 | { | |
5934 | if (depth < 5) | |
5935 | { | |
5936 | ind[depth * 3 + 1] = '\0'; | |
5937 | } | |
5938 | ||
5939 | if (s->env == GLOBAL_ENV) | |
5940 | { | |
5941 | int looplow; | |
5942 | ||
5943 | printf ("level: %d\n", s->lexlevel); | |
5944 | ||
5945 | looplow = 0; | |
5946 | ||
5947 | for (i = looplow; i < s->nentries; i++) | |
5948 | { | |
5949 | printf ("%s%3d %s\n", ind, i, | |
02b84d4b | 5950 | cstring_toCharsSafe (uentry_unparseFull (s->entries[i]))); |
616915dd | 5951 | } |
5952 | } | |
5953 | else | |
5954 | { | |
5955 | printf ("level: %d\n", s->lexlevel); | |
5956 | for (i = 0; i < s->nentries; i++) | |
5957 | { | |
5958 | printf ("%s%3d %s\n", ind, i, | |
02b84d4b | 5959 | cstring_toCharsSafe (uentry_unparseFull (s->entries[i]))); |
616915dd | 5960 | } |
5961 | } | |
5962 | ||
5963 | ind[depth * 3 + 1] = ' '; | |
5964 | depth++; | |
5965 | s = s->env; | |
5966 | } | |
5967 | ||
5968 | printf ("----------\n"); | |
5969 | mstring_free (ind); | |
5970 | } | |
5971 | ||
3e3ec469 | 5972 | # ifdef S_SPLINT_S |
616915dd | 5973 | static /*@only@*/ cstring /*@unused@*/ |
5974 | usymtab_unparseLocalAux (/*@notnull@*/ usymtab s) | |
5975 | { | |
5976 | cstring c = message ("lexlevel: %d\n", s->lexlevel); | |
5977 | int i; | |
5978 | ||
5979 | for (i = 0; i < s->nentries; i++) | |
5980 | { | |
5981 | c = message ("%q\n%q", c, uentry_unparseFull (s->entries[i])); | |
5982 | } | |
5983 | ||
5984 | c = message ("%q\n=========", c); | |
5985 | return (c); | |
5986 | } | |
5987 | ||
5988 | static cstring /*@unused@*/ /*@only@*/ | |
5989 | usymtab_unparseLocalList (/*@notnull@*/ usymtab s) | |
5990 | { | |
5991 | cstring c = message ("[%d/%s/%s] ", s->lexlevel, | |
5992 | bool_unparse (s->mustBreak), | |
5993 | exitkind_unparse (s->exitCode)); | |
5994 | int i; | |
5995 | ||
5996 | for (i = 0; i < s->nentries; i++) | |
5997 | { | |
5998 | sRef sr = uentry_getSref (s->entries[i]); | |
5999 | ||
6000 | if (i == 0) | |
6001 | { | |
6002 | c = message ("%q: %q [%b]", c, uentry_getName (s->entries[i]), | |
6003 | sRef_isStateDefined (sr)); | |
6004 | } | |
6005 | else | |
6006 | { | |
6007 | c = message ("%q, %q [%b]", c, uentry_getName (s->entries[i]), | |
6008 | sRef_isStateDefined (sr)); | |
6009 | } | |
6010 | ||
6011 | } | |
6012 | ||
6013 | return (c); | |
6014 | } | |
8250fa4a | 6015 | # endif |
616915dd | 6016 | |
6017 | void | |
6018 | usymtab_printLocal (void) | |
6019 | /*@globals utab@*/ | |
6020 | { | |
6021 | int i; | |
6022 | usymtab s = utab; | |
6023 | ||
6024 | printf ("lexlevel: %d\n", s->lexlevel); | |
6025 | ||
6026 | for (i = 0; i < s->nentries; i++) | |
6027 | { | |
6028 | printf ("%s\n", cstring_toCharsSafe (uentry_unparseFull (s->entries[i]))); | |
6029 | } | |
6030 | ||
6031 | while (s->lexlevel > 1) | |
6032 | { | |
6033 | s = s->env; | |
6034 | } | |
6035 | ||
6036 | llassert (usymtab_isDefined (s)); | |
6037 | ||
6038 | printf ("Params:\n"); | |
6039 | ||
6040 | for (i = 0; i < s->nentries; i++) | |
6041 | { | |
6042 | printf ("%d: %s\n", i, | |
6043 | cstring_toCharsSafe (uentry_unparseFull (s->entries[i]))); | |
6044 | } | |
6045 | } | |
6046 | /*@=mustfree@*/ | |
6047 | ||
6048 | static bool checkDistinctExternalName (uentry e) | |
6049 | /*@globals globtab@*/ | |
80489f0a | 6050 | /*@modifies *g_warningstream@*/ |
616915dd | 6051 | { |
abd7f895 | 6052 | size_t checklen = size_fromInt (context_getValue (FLG_EXTERNALNAMELEN)); |
616915dd | 6053 | bool ignorecase = context_getFlag (FLG_EXTERNALNAMECASEINSENSITIVE); |
6054 | bool gotone = FALSE; | |
6055 | bool extras = FALSE; | |
6056 | bool hasError = FALSE; | |
6057 | cstring name = uentry_rawName (e); | |
6058 | usymtab st = globtab; | |
6059 | ||
6060 | if (checklen == 0) | |
6061 | { | |
6062 | ; | |
6063 | } | |
6064 | else | |
6065 | { | |
6066 | if (uentry_isAnyTag (e)) | |
6067 | { | |
6068 | checklen++; /* the tag marker doesn't count */ | |
6069 | } | |
6070 | } | |
6071 | ||
6072 | usymtab_entries (st, oe) | |
6073 | { | |
6074 | if (uentry_sameObject (oe, e)) | |
6075 | { | |
6076 | continue; | |
6077 | } | |
6078 | ||
6079 | if (checklen == 0) | |
6080 | { | |
6081 | if (cstring_equalCaseInsensitive (uentry_rawName (oe), name)) | |
6082 | { | |
6083 | if (gotone) | |
6084 | { | |
6085 | extras = TRUE; | |
6086 | break; | |
6087 | } | |
6088 | ||
6089 | if (optgenerror | |
6090 | (FLG_DISTINCTEXTERNALNAMES, | |
6091 | message | |
6092 | ("External identifier %q is not distinguishable from %q " | |
6093 | "because alphabetical case is ignored", | |
6094 | uentry_getName (e), | |
6095 | uentry_getName (oe)), | |
6096 | uentry_whereLast (e))) | |
6097 | { | |
6098 | uentry_showWhereAny (oe); | |
6099 | uentry_setHasNameError (oe); | |
6100 | gotone = TRUE; | |
6101 | } | |
6102 | } | |
6103 | } | |
6104 | else | |
6105 | { | |
6106 | if (ignorecase) | |
6107 | { | |
6108 | if (cstring_equalLenCaseInsensitive (uentry_rawName (oe), | |
6109 | name, checklen)) | |
6110 | { | |
6111 | if (gotone) | |
6112 | { | |
6113 | extras = TRUE; | |
6114 | break; | |
6115 | } | |
6116 | ||
6117 | if (cstring_equalLen (uentry_rawName (oe), name, checklen)) | |
6118 | { | |
6119 | if (optgenerror | |
6120 | (FLG_DISTINCTEXTERNALNAMES, | |
6121 | /*@-sefparams@*/ | |
6122 | message | |
6123 | ("External identifier %q is not distinguishable from %q " | |
6124 | "in the first %d characters (%q)", | |
6125 | uentry_getName (e), | |
6126 | uentry_getName (oe), | |
abd7f895 | 6127 | size_toInt (checklen), |
616915dd | 6128 | cstring_clip (uentry_getName (e), checklen)), |
6129 | /*@=sefparams@*/ | |
6130 | uentry_whereLast (e))) | |
6131 | { | |
6132 | uentry_showWhereAny (oe); | |
6133 | uentry_setHasNameError (oe); | |
6134 | gotone = TRUE; | |
6135 | } | |
6136 | } | |
6137 | else | |
6138 | { | |
6139 | if (gotone) | |
6140 | { | |
6141 | extras = TRUE; | |
6142 | break; | |
6143 | } | |
6144 | ||
6145 | if (optgenerror | |
6146 | (FLG_DISTINCTEXTERNALNAMES, | |
6147 | message | |
6148 | ("External identifier %q is not distinguishable from %q " | |
6149 | "in the first %d characters because alphabetical case " | |
6150 | "is ignored", | |
6151 | uentry_getName (e), | |
6152 | uentry_getName (oe), | |
abd7f895 | 6153 | size_toInt (checklen)), |
616915dd | 6154 | uentry_whereLast (e))) |
6155 | { | |
6156 | uentry_showWhereAny (oe); | |
6157 | uentry_setHasNameError (oe); | |
6158 | gotone = TRUE; | |
6159 | } | |
6160 | } | |
6161 | } | |
6162 | } | |
6163 | else if (cstring_equalLen (uentry_rawName (oe), name, checklen)) | |
6164 | { | |
6165 | if (gotone) | |
6166 | { | |
6167 | extras = TRUE; | |
6168 | break; | |
6169 | } | |
6170 | ||
6171 | if (optgenerror | |
6172 | (FLG_DISTINCTEXTERNALNAMES, | |
6173 | /*@-sefparams@*/ | |
6174 | message | |
6175 | ("External identifier %q is not distinguishable from %q " | |
6176 | "in the first %d characters (%q)", | |
6177 | uentry_getName (e), | |
6178 | uentry_getName (oe), | |
abd7f895 | 6179 | size_toInt (checklen), |
616915dd | 6180 | cstring_clip (uentry_getName (e), checklen)), |
6181 | /*@=sefparams@*/ | |
6182 | uentry_whereLast (e))) | |
6183 | { | |
6184 | uentry_showWhereAny (oe); | |
6185 | uentry_setHasNameError (oe); | |
6186 | gotone = TRUE; | |
6187 | } | |
6188 | } | |
6189 | else | |
6190 | { | |
6191 | ; /* okay */ | |
6192 | } | |
6193 | } | |
6194 | } end_usymtab_entries ; | |
6195 | ||
6196 | hasError = gotone; | |
6197 | ||
6198 | if (extras) | |
6199 | { | |
6200 | llgenindentmsgnoloc | |
6201 | (cstring_makeLiteral ("One or more additional " | |
6202 | "indistinguishable external " | |
6203 | "names not reported")); | |
6204 | } | |
6205 | ||
6206 | return hasError; | |
6207 | } | |
6208 | ||
6209 | static bool checkDistinctInternalName (uentry e) | |
6210 | /*@globals utab@*/ | |
80489f0a | 6211 | /*@modifies *g_warningstream@*/ |
616915dd | 6212 | { |
6213 | usymtab ttab = utab; | |
6214 | cstring name = uentry_rawName (e); | |
abd7f895 | 6215 | size_t numchars = size_fromInt (context_getValue (FLG_INTERNALNAMELEN)); |
616915dd | 6216 | bool caseinsensitive = context_getFlag (FLG_INTERNALNAMECASEINSENSITIVE); |
6217 | bool lookalike = context_getFlag (FLG_INTERNALNAMELOOKALIKE); | |
6218 | ||
6219 | if (uentry_isAnyTag (e) && (numchars != 0)) | |
6220 | { | |
6221 | numchars++; /* the tag marker doesn't count */ | |
6222 | } | |
6223 | ||
6224 | while (usymtab_isDefined (ttab)) | |
6225 | { | |
6226 | usymtab_entries (ttab, oe) | |
6227 | { | |
6228 | if (uentry_sameObject (oe, e)) | |
6229 | { | |
6230 | /*@innercontinue@*/ continue; | |
6231 | } | |
6232 | ||
6233 | switch (cstring_genericEqual | |
6234 | (name, uentry_rawName (oe), | |
6235 | numchars, caseinsensitive, lookalike)) | |
6236 | { | |
6237 | case CGE_DISTINCT: /* okay */ | |
6238 | /*@switchbreak@*/ | |
6239 | break; | |
6240 | case CGE_SAME: | |
6241 | if (cstring_equal (name, uentry_rawName (oe))) | |
6242 | { | |
6243 | ; /* got a shadow error */ | |
6244 | } | |
6245 | else | |
6246 | { | |
6247 | if (optgenerror | |
6248 | (FLG_DISTINCTINTERNALNAMES, | |
6249 | /*@-sefparams@*/ | |
6250 | message | |
6251 | ("Internal identifier %q is not distinguishable from %q " | |
6252 | "in the first %d characters (%q)", | |
6253 | uentry_getName (e), | |
6254 | uentry_getName (oe), | |
abd7f895 | 6255 | size_toInt (numchars), |
616915dd | 6256 | cstring_clip (uentry_getName (e), numchars)), |
6257 | /*@=sefparams@*/ | |
6258 | uentry_whereLast (e))) | |
6259 | { | |
6260 | uentry_showWhereAny (oe); | |
6261 | uentry_setHasNameError (oe); | |
6262 | return TRUE; | |
6263 | } | |
6264 | } | |
6265 | /*@switchbreak@*/ | |
6266 | break; | |
6267 | case CGE_CASE: | |
abd7f895 | 6268 | if (numchars == 0 || (cstring_length (name) <= numchars)) |
616915dd | 6269 | { |
6270 | if (optgenerror | |
6271 | (FLG_DISTINCTINTERNALNAMES, | |
6272 | message | |
6273 | ("Internal identifier %q is not distinguishable from %q " | |
6274 | "without case sensitivity", | |
6275 | uentry_getName (e), | |
6276 | uentry_getName (oe)), | |
6277 | uentry_whereLast (e))) | |
6278 | { | |
6279 | uentry_showWhereAny (oe); | |
6280 | uentry_setHasNameError (oe); | |
6281 | return TRUE; | |
6282 | } | |
6283 | } | |
6284 | else | |
6285 | { | |
6286 | if (optgenerror | |
6287 | (FLG_DISTINCTINTERNALNAMES, | |
6288 | message | |
6289 | ("Internal identifier %q is not distinguishable from %q " | |
6290 | "in the first %d characters without case sensitivity", | |
6291 | uentry_getName (e), | |
6292 | uentry_getName (oe), | |
abd7f895 | 6293 | size_toInt (numchars)), |
616915dd | 6294 | uentry_whereLast (e))) |
6295 | { | |
6296 | uentry_showWhereAny (oe); | |
6297 | uentry_setHasNameError (oe); | |
6298 | return TRUE; | |
6299 | } | |
6300 | } | |
6301 | /*@switchbreak@*/ | |
6302 | break; | |
6303 | case CGE_LOOKALIKE: | |
6304 | if (numchars == 0 | |
6305 | || (cstring_length (name) <= numchars)) | |
6306 | { | |
6307 | if (optgenerror | |
6308 | (FLG_DISTINCTINTERNALNAMES, | |
6309 | message | |
6310 | ("Internal identifier %q is not distinguishable from %q " | |
6311 | "except by lookalike characters", | |
6312 | uentry_getName (e), | |
6313 | uentry_getName (oe)), | |
6314 | uentry_whereLast (e))) | |
6315 | { | |
6316 | uentry_showWhereAny (oe); | |
6317 | uentry_setHasNameError (oe); | |
6318 | return TRUE; | |
6319 | } | |
6320 | } | |
6321 | else | |
6322 | { | |
6323 | if (optgenerror | |
6324 | (FLG_DISTINCTINTERNALNAMES, | |
6325 | message | |
6326 | ("Internal identifier %q is not distinguishable from %q " | |
6327 | "in the first %d characters except by lookalike characters", | |
6328 | uentry_getName (e), | |
6329 | uentry_getName (oe), | |
abd7f895 | 6330 | size_toInt (numchars)), |
616915dd | 6331 | uentry_whereLast (e))) |
6332 | { | |
6333 | uentry_showWhereAny (oe); | |
6334 | uentry_setHasNameError (oe); | |
6335 | return TRUE; | |
6336 | } | |
6337 | } | |
6338 | } | |
6339 | } end_usymtab_entries ; | |
6340 | ||
6341 | ttab = ttab->env; | |
6342 | } | |
6343 | ||
6344 | return FALSE; | |
6345 | } | |
6346 | ||
6347 | void usymtab_checkDistinctName (uentry e, int scope) | |
6348 | /*@globals utab, globtab@*/ | |
6349 | { | |
6350 | bool hasError = FALSE; | |
6351 | fileloc where = uentry_whereLast (e); | |
6352 | ||
6353 | if (!fileloc_isPreproc (where) && !fileloc_isBuiltin (where)) | |
6354 | { | |
6355 | if (scope == globScope) | |
6356 | { | |
6357 | if (context_getFlag (FLG_DISTINCTEXTERNALNAMES)) | |
6358 | { | |
6359 | hasError = checkDistinctExternalName (e); | |
6360 | } | |
6361 | } | |
6362 | ||
6363 | if (!hasError && context_getFlag (FLG_DISTINCTINTERNALNAMES)) | |
6364 | { | |
6365 | hasError = checkDistinctInternalName (e); | |
6366 | } | |
6367 | } | |
6368 | ||
6369 | if (hasError) | |
6370 | { | |
28bf4b0b | 6371 | uentry_setHasNameError (e); |
616915dd | 6372 | } |
6373 | } | |
6374 | ||
28bf4b0b | 6375 | /*@exposed@*/ sRef usymtab_lookupGlobalMarker (void) /*@globals utab@*/ |
6376 | { | |
6377 | uentry ue; | |
6378 | ||
6379 | ue = usymtab_lookupAux (utab, GLOBAL_MARKER_NAME); | |
6380 | llassert (uentry_isValid (ue)); | |
6381 | ||
6382 | return uentry_getSref (ue); | |
6383 | } | |
6384 | ||
6483a926 | 6385 | |
6386 | # ifdef DEBUGSPLINT | |
6387 | /* | |
6388 | ** For debugging only | |
6389 | */ | |
6390 | ||
6391 | void | |
6392 | usymtab_checkAllValid () /*@globals utab@*/ | |
6393 | { | |
6394 | usymtab tab = utab; | |
6395 | ||
6396 | while (tab != GLOBAL_ENV) | |
6397 | { | |
6398 | int i; | |
6399 | ||
6400 | for (i = 0; i < utab->nentries; i++) | |
6401 | { | |
6402 | uentry e = utab->entries[i]; | |
6403 | ||
6404 | uentry_checkValid (e); | |
6405 | } | |
6406 | ||
6407 | aliasTable_checkValid (tab->aliases); | |
6408 | tab = tab->env; | |
6409 | } | |
6410 | } | |
6411 | # endif | |
6412 | ||
6413 | ||
6414 | ||
6415 | ||
6416 | ||
6417 |