]>
Commit | Line | Data |
---|---|---|
1 | /* | |
2 | ** LCLint - annotation-assisted static program checker | |
3 | ** Copyright (C) 1994-2000 University of Virginia, | |
4 | ** Massachusetts Institute of Technology | |
5 | ** | |
6 | ** This program is free software; you can redistribute it and/or modify it | |
7 | ** under the terms of the GNU General Public License as published by the | |
8 | ** Free Software Foundation; either version 2 of the License, or (at your | |
9 | ** option) any later version. | |
10 | ** | |
11 | ** This program is distributed in the hope that it will be useful, but | |
12 | ** WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | ** General Public License for more details. | |
15 | ** | |
16 | ** The GNU General Public License is available from http://www.gnu.org/ or | |
17 | ** the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, | |
18 | ** MA 02111-1307, USA. | |
19 | ** | |
20 | ** For information on lclint: lclint-request@cs.virginia.edu | |
21 | ** To report a bug: lclint-bug@cs.virginia.edu | |
22 | ** For more information: http://lclint.cs.virginia.edu | |
23 | */ | |
24 | /* | |
25 | ** constraintList.c | |
26 | ** | |
27 | ** based on list_template.c | |
28 | ** | |
29 | ** where T has T_equal (or change this) and T_unparse | |
30 | */ | |
31 | ||
32 | # include "lclintMacros.nf" | |
33 | # include "llbasic.h" | |
34 | ||
35 | ||
36 | /*@iter constraintList_elements_private_only (sef constraintList x, yield only constraint el); @*/ | |
37 | # define constraintList_elements_private_only(x, m_el) \ | |
38 | { if (constraintList_isDefined (x)) { int m_ind; constraint *m_elements = &((x)->elements[0]); \ | |
39 | for (m_ind = 0 ; m_ind < (x)->nelements; m_ind++) \ | |
40 | { constraint m_el = *(m_elements++); | |
41 | ||
42 | # define end_constraintList_elements_private_only }}} | |
43 | ||
44 | ||
45 | /*@iter constraintList_elements_private (sef constraintList x, yield constraint el); @*/ | |
46 | # define constraintList_elements_private(x, m_el) \ | |
47 | { if (constraintList_isDefined (x)) { int m_ind; constraint *m_elements = &((x)->elements[0]); \ | |
48 | for (m_ind = 0 ; m_ind < (x)->nelements; m_ind++) \ | |
49 | { constraint m_el = *(m_elements++); | |
50 | ||
51 | # define end_constraintList_elements_private }}} | |
52 | ||
53 | ||
54 | /*@only@*/ constraintList constraintList_makeNew () | |
55 | { | |
56 | constraintList s = (constraintList) dmalloc (sizeof (*s)); | |
57 | ||
58 | s->nelements = 0; | |
59 | s->nspace = constraintListBASESIZE; | |
60 | s->elements = (constraint *) | |
61 | dmalloc (sizeof (*s->elements) * constraintListBASESIZE); | |
62 | ||
63 | return (s); | |
64 | } | |
65 | ||
66 | static void | |
67 | constraintList_grow (constraintList s) | |
68 | { | |
69 | int i; | |
70 | constraint *newelements; | |
71 | ||
72 | llassert (constraintList_isDefined (s)); | |
73 | ||
74 | s->nspace += constraintListBASESIZE; | |
75 | newelements = (constraint *) dmalloc (sizeof (*newelements) | |
76 | * (s->nelements + s->nspace)); | |
77 | ||
78 | for (i = 0; i < s->nelements; i++) | |
79 | { | |
80 | newelements[i] = s->elements[i]; | |
81 | } | |
82 | ||
83 | sfree (s->elements); | |
84 | s->elements = newelements; | |
85 | } | |
86 | ||
87 | ||
88 | constraintList | |
89 | constraintList_add (/*@returned@*/ constraintList s, /*@only@*/ constraint el) | |
90 | { | |
91 | llassert (constraintList_isDefined (s)); | |
92 | ||
93 | /*drl7x */ | |
94 | // el = constraint_simplify (el); | |
95 | if (constraintList_resolve (el, s) ) | |
96 | { | |
97 | constraint_free (el); | |
98 | return s; | |
99 | } | |
100 | ||
101 | if (s->nspace <= 0) | |
102 | constraintList_grow (s); | |
103 | ||
104 | s->nspace--; | |
105 | s->elements[s->nelements] = el; | |
106 | s->nelements++; | |
107 | return s; | |
108 | } | |
109 | ||
110 | /* frees everything but actual constraints */ | |
111 | /* This function should only be used if you have | |
112 | other references to unshared constraints | |
113 | */ | |
114 | static void constraintList_freeShallow (/*@only@*/ constraintList c) | |
115 | { | |
116 | if (constraintList_isDefined(c) ) | |
117 | { | |
118 | free (c->elements); | |
119 | c->elements = NULL; | |
120 | c->nelements = -1; | |
121 | c->nspace = -1; | |
122 | } | |
123 | free (c); | |
124 | c = NULL; | |
125 | } | |
126 | ||
127 | /*@only@*/ constraintList constraintList_addList (/*@only@*/ /*@returned@*/ constraintList s, /*@observer@*/ constraintList newList) | |
128 | { | |
129 | llassert(constraintList_isDefined(s) ); | |
130 | llassert(constraintList_isDefined(newList) ); | |
131 | ||
132 | if (newList == constraintList_undefined) | |
133 | return s; | |
134 | ||
135 | constraintList_elements (newList, elem) | |
136 | { | |
137 | s = constraintList_add (s, constraint_copy(elem) ); | |
138 | } | |
139 | end_constraintList_elements; | |
140 | ||
141 | return s; | |
142 | } | |
143 | ||
144 | constraintList constraintList_addListFree (/*@returned@*/ constraintList s, /*@only@*/ constraintList newList) | |
145 | { | |
146 | llassert(constraintList_isDefined(s) ); | |
147 | llassert(constraintList_isDefined(newList) ); | |
148 | ||
149 | if (constraintList_isUndefined(newList) ) | |
150 | return s; | |
151 | ||
152 | constraintList_elements_private_only(newList, elem) | |
153 | { | |
154 | s = constraintList_add (s, elem); | |
155 | } | |
156 | end_constraintList_elements_private_only | |
157 | ||
158 | constraintList_freeShallow(newList); | |
159 | return s; | |
160 | } | |
161 | ||
162 | ||
163 | extern /*@only@*/ cstring constraintList_unparse ( /*@observer@*/ constraintList s) /*@*/ | |
164 | { | |
165 | return (constraintList_print(s)); | |
166 | } | |
167 | ||
168 | ||
169 | /*@only@*/ cstring | |
170 | constraintList_print (/*@temp@*/ constraintList s) /*@*/ | |
171 | { | |
172 | int i; | |
173 | cstring st = cstring_undefined; | |
174 | bool first = TRUE; | |
175 | ||
176 | if (!constraintList_isDefined (s)) | |
177 | { | |
178 | return cstring_makeLiteral ("<undefined>"); | |
179 | } | |
180 | ||
181 | if (s->nelements == 0) | |
182 | { | |
183 | st = cstring_makeLiteral("<List Empty>"); | |
184 | return st; | |
185 | } | |
186 | ||
187 | for (i = 0; i < s->nelements; i++) | |
188 | { | |
189 | cstring type = cstring_undefined; | |
190 | constraint current = s->elements[i]; | |
191 | ||
192 | if (constraint_isDefined(current) ) | |
193 | { | |
194 | cstring temp1; | |
195 | if ( context_getFlag (FLG_ORCONSTRAINT) ) | |
196 | temp1 = constraint_printOr(current); | |
197 | else | |
198 | temp1 = constraint_print(current); | |
199 | type = message ("%q %q\n", type, temp1 ); | |
200 | } | |
201 | ||
202 | if (first) | |
203 | { | |
204 | st = type; | |
205 | first = FALSE; | |
206 | } | |
207 | else | |
208 | { | |
209 | st = message ("%q, %q", st, type); | |
210 | } | |
211 | } //end for | |
212 | ||
213 | return st; | |
214 | } | |
215 | ||
216 | void constraintList_printErrorPostConditions (constraintList s, fileloc loc) | |
217 | { | |
218 | ||
219 | constraintList_elements (s, elem) | |
220 | { | |
221 | if (constraint_isDefined(elem)) | |
222 | { | |
223 | constraint_printErrorPostCondition (elem, loc); | |
224 | } | |
225 | } | |
226 | end_constraintList_elements; | |
227 | return; | |
228 | } | |
229 | ||
230 | void constraintList_printError (constraintList s, fileloc loc) | |
231 | { | |
232 | ||
233 | constraintList_elements (s, elem) | |
234 | { | |
235 | if (constraint_isDefined(elem) ) | |
236 | { | |
237 | if (constraint_isPost(elem) ) | |
238 | constraint_printErrorPostCondition (elem, loc); | |
239 | else | |
240 | constraint_printError (elem, loc); | |
241 | } | |
242 | } | |
243 | end_constraintList_elements; | |
244 | return; | |
245 | } | |
246 | ||
247 | ||
248 | cstring | |
249 | constraintList_printDetailed (constraintList s) | |
250 | { | |
251 | int i; | |
252 | cstring st = cstring_undefined; | |
253 | bool first = TRUE; | |
254 | ||
255 | if (!constraintList_isDefined (s)) | |
256 | { | |
257 | return cstring_makeLiteral ("<undefined>"); | |
258 | } | |
259 | ||
260 | if (s->nelements == 0) | |
261 | { | |
262 | st = cstring_makeLiteral("<List Empty>"); | |
263 | return st; | |
264 | } | |
265 | ||
266 | for (i = 0; i < s->nelements; i++) | |
267 | { | |
268 | cstring type = cstring_undefined; | |
269 | constraint current = s->elements[i]; | |
270 | ||
271 | if (constraint_isDefined(current ) ) | |
272 | { | |
273 | cstring temp1 = constraint_printDetailed (current); | |
274 | type = message ("%s %s\n", type, temp1 ); | |
275 | cstring_free(temp1); | |
276 | } | |
277 | ||
278 | if (first) | |
279 | { | |
280 | st = type; | |
281 | first = FALSE; | |
282 | type = NULL; | |
283 | } | |
284 | else | |
285 | { | |
286 | st = message ("%q %q", st, type); | |
287 | } | |
288 | } | |
289 | return st; | |
290 | } | |
291 | ||
292 | /*{ x: constraint | (x in l1 -> resolve (x, l2) || (x in l2 -> resolve (x, l1) | |
293 | } */ | |
294 | ||
295 | constraintList | |
296 | constraintList_logicalOr (/*@observer@*/ constraintList l1, /*@observer@*/ constraintList l2) | |
297 | { | |
298 | constraint temp; | |
299 | constraintList ret; | |
300 | DPRINTF ( (message ("Logical or on %s and %s", | |
301 | constraintList_print(l1), | |
302 | constraintList_print(l2)) ) ); | |
303 | ||
304 | ret = constraintList_makeNew(); | |
305 | constraintList_elements (l1, el) | |
306 | { | |
307 | temp = constraint_substitute (el, l2); | |
308 | ||
309 | if (constraintList_resolve (el, l2) || constraintList_resolve(temp,l2) ) | |
310 | { /*avoid redundant constraints*/ | |
311 | if (!constraintList_resolve (el, ret) ) | |
312 | { | |
313 | constraint temp2; | |
314 | temp2 = constraint_copy(el); | |
315 | ret = constraintList_add (ret, temp2); | |
316 | } | |
317 | } | |
318 | constraint_free(temp); | |
319 | } | |
320 | end_constraintList_elements; | |
321 | ||
322 | constraintList_elements (l2, el) | |
323 | { | |
324 | temp = constraint_substitute (el, l1); | |
325 | ||
326 | if (constraintList_resolve (el, l1) || constraintList_resolve(temp,l1) ) | |
327 | { | |
328 | /*avoid redundant constraints*/ | |
329 | if (!constraintList_resolve (el, ret) ) | |
330 | { | |
331 | constraint temp2; | |
332 | temp2 = constraint_copy(el); | |
333 | ret = constraintList_add (ret, temp2); | |
334 | } | |
335 | } | |
336 | constraint_free(temp); | |
337 | } | |
338 | end_constraintList_elements; | |
339 | ||
340 | ||
341 | return ret; | |
342 | } | |
343 | ||
344 | void | |
345 | constraintList_free (/*@only@*/ constraintList s) | |
346 | { | |
347 | int i; | |
348 | ||
349 | llassert(constraintList_isDefined(s) ); | |
350 | ||
351 | ||
352 | for (i = 0; i < s->nelements; i++) | |
353 | { | |
354 | constraint_free (s->elements[i]); | |
355 | } | |
356 | ||
357 | sfree (s->elements); | |
358 | s->elements = NULL; | |
359 | s->nelements = -1; | |
360 | s->nspace = -1; | |
361 | sfree (s); | |
362 | s = NULL; | |
363 | } | |
364 | ||
365 | constraintList | |
366 | constraintList_copy (/*@observer@*/ /*@temp@*/ constraintList s) | |
367 | { | |
368 | constraintList ret = constraintList_makeNew (); | |
369 | ||
370 | constraintList_elements (s, el) | |
371 | { | |
372 | ret = constraintList_add (ret, constraint_copy (el)); | |
373 | } end_constraintList_elements; | |
374 | ||
375 | return ret; | |
376 | } | |
377 | ||
378 | constraintList constraintList_preserveOrig (constraintList c) | |
379 | { | |
380 | DPRINTF((message("constraintList_preserveOrig preserving the originial constraints for %s ", constraintList_print (c) ) )); | |
381 | ||
382 | constraintList_elements_private (c, el) | |
383 | { | |
384 | el = constraint_preserveOrig (el); | |
385 | } | |
386 | end_constraintList_elements_private; | |
387 | return c; | |
388 | } | |
389 | ||
390 | constraintList constraintList_preserveCallInfo (/*@returned@*/ constraintList c,/*@observer@*/ /*@dependent@*/ /*@observer@*/ exprNode fcn) | |
391 | { | |
392 | DPRINTF((message("constraintList_preserveCallInfo %s ", constraintList_print (c) ) )); | |
393 | ||
394 | constraintList_elements_private (c, el) | |
395 | { | |
396 | // el = constraint_preserveOrig (el); | |
397 | el = constraint_setFcnPre(el); | |
398 | el = constraint_origAddGeneratingExpr (el, fcn); | |
399 | } | |
400 | end_constraintList_elements_private; | |
401 | return c; | |
402 | } | |
403 | ||
404 | constraintList constraintList_single (constraint c) | |
405 | { | |
406 | constraintList res; | |
407 | res = constraintList_makeNew(); | |
408 | res = constraintList_add (res, c); | |
409 | return res; | |
410 | } | |
411 | ||
412 | constraintList constraintList_addGeneratingExpr (constraintList c,/*@dependent@*/ exprNode e) | |
413 | { | |
414 | DPRINTF ((message ("entering constraintList_addGeneratingExpr for %s ", exprNode_unparse(e) ) )); | |
415 | ||
416 | constraintList_elements_private (c, el) | |
417 | { | |
418 | DPRINTF ((message ("setting generatingExpr for %s to %s", constraint_print(el), exprNode_unparse(e) ) )); | |
419 | el = constraint_addGeneratingExpr (el, e); | |
420 | } | |
421 | end_constraintList_elements_private; | |
422 | return c; | |
423 | } | |
424 | ||
425 | /*@only@*/ constraintList constraintList_doFixResult (/*@only@*/constraintList postconditions, exprNode fcnCall) | |
426 | { | |
427 | constraintList ret; | |
428 | ret = constraintList_makeNew(); | |
429 | constraintList_elements_private (postconditions, el) | |
430 | { | |
431 | ret = constraintList_add (ret, constraint_doFixResult (el, fcnCall) ); | |
432 | } | |
433 | end_constraintList_elements_private; | |
434 | ||
435 | constraintList_free(postconditions); | |
436 | return ret; | |
437 | } | |
438 | ||
439 | /*@only@*/ constraintList constraintList_doSRefFixConstraintParam (constraintList preconditions, /*@temp@*/ /*@observer@*/ exprNodeList arglist) | |
440 | { | |
441 | constraintList ret; | |
442 | ret = constraintList_makeNew(); | |
443 | ||
444 | constraintList_elements (preconditions, el) | |
445 | { | |
446 | ret = constraintList_add(ret, constraint_doSRefFixConstraintParam (el, arglist) ); | |
447 | } | |
448 | end_constraintList_elements; | |
449 | ||
450 | constraintList_free (preconditions); | |
451 | ||
452 | return ret; | |
453 | } | |
454 | constraintList constraintList_doSRefFixBaseParam (constraintList preconditions, /*@observer@*/ | |
455 | exprNodeList arglist) | |
456 | { | |
457 | constraintList ret; | |
458 | constraint temp; | |
459 | ret = constraintList_makeNew(); | |
460 | ||
461 | constraintList_elements (preconditions, el) | |
462 | { | |
463 | temp = constraint_copy(el); | |
464 | ret = constraintList_add(ret, constraint_doSRefFixBaseParam (temp, arglist) ); | |
465 | } | |
466 | end_constraintList_elements; | |
467 | ||
468 | return ret; | |
469 | } | |
470 | ||
471 | constraintList constraintList_togglePost (/*@returned@*/ constraintList c) | |
472 | { | |
473 | constraintList_elements_private (c, el) | |
474 | { | |
475 | el = constraint_togglePost(el); | |
476 | if (constraint_hasOrig(el) ) | |
477 | { | |
478 | el = constraint_togglePostOrig (el); | |
479 | } | |
480 | } | |
481 | end_constraintList_elements_private; | |
482 | return c; | |
483 | } | |
484 | ||
485 | /*@only@*/ constraintList constraintList_undump (FILE *f) | |
486 | { | |
487 | constraintList ret; | |
488 | char *s = mstring_create (MAX_DUMP_LINE_LENGTH); | |
489 | char *os; | |
490 | ||
491 | ret = constraintList_makeNew(); | |
492 | ||
493 | os = s; | |
494 | s = fgets (os, MAX_DUMP_LINE_LENGTH, f); | |
495 | ||
496 | while (s != NULL && *s != ';') | |
497 | { | |
498 | constraint temp; | |
499 | char * c; | |
500 | ||
501 | c = reader_getWord(&s); | |
502 | ||
503 | if (strcmp (c, "C") != 0) | |
504 | { | |
505 | llfatalbug(message("Error reading library. File may be corrupted")); | |
506 | } | |
507 | ||
508 | temp = constraint_undump (f); | |
509 | ret = constraintList_add (ret, temp); | |
510 | s = fgets (os, MAX_DUMP_LINE_LENGTH, f); | |
511 | free(c); | |
512 | } | |
513 | free(s); | |
514 | ||
515 | return ret; | |
516 | } | |
517 | ||
518 | ||
519 | void constraintList_dump (/*@observer@*/ constraintList c, FILE *f) | |
520 | { | |
521 | constraintList_elements (c, el) | |
522 | { | |
523 | fprintf(f, "C\n"); | |
524 | constraint_dump (el, f); | |
525 | } | |
526 | end_constraintList_elements; ; | |
527 | } | |
528 | ||
529 | ||
530 | constraintList constraintList_sort (/*@returned@*/ constraintList ret) | |
531 | { | |
532 | qsort (ret->elements, (size_t) ret->nelements, | |
533 | (sizeof (*ret->elements) ), constraint_compare); | |
534 | return ret; | |
535 | } |