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616915dd 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
d46ce6a4 35
28bf4b0b 36/*@iter constraintList_elements_private_only (sef constraintList x, yield only constraint el); @*/
37# define constraintList_elements_private_only(x, m_el) \
60eced23 38 { if (constraintList_isDefined (x)) { int m_ind; constraint *m_elements = &((x)->elements[0]); \
28bf4b0b 39 for (m_ind = 0 ; m_ind < (x)->nelements; m_ind++) \
40 { constraint m_el = *(m_elements++);
41
60eced23 42# define end_constraintList_elements_private_only }}}
28bf4b0b 43
44
60eced23 45/*@iter constraintList_elements_private (sef constraintList x, yield constraint el); @*/
d46ce6a4 46# define constraintList_elements_private(x, m_el) \
60eced23 47 { if (constraintList_isDefined (x)) { int m_ind; constraint *m_elements = &((x)->elements[0]); \
d46ce6a4 48 for (m_ind = 0 ; m_ind < (x)->nelements; m_ind++) \
49 { constraint m_el = *(m_elements++);
50
60eced23 51# define end_constraintList_elements_private }}}
d46ce6a4 52
53
03d670b6 54/*@only@*/ constraintList constraintList_makeNew ()
616915dd 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
66static void
67constraintList_grow (constraintList s)
68{
69 int i;
70 constraint *newelements;
71
60eced23 72 llassert (constraintList_isDefined (s));
73
616915dd 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
c3e695ff 87
616915dd 88constraintList
bb25bea6 89constraintList_add (/*@returned@*/ constraintList s, /*@only@*/ constraint el)
616915dd 90{
60eced23 91 llassert (constraintList_isDefined (s));
92
c3e695ff 93 /*drl7x */
94 // el = constraint_simplify (el);
28bf4b0b 95 if (constraintList_resolve (el, s) )
d46ce6a4 96 {
97 constraint_free (el);
98 return s;
99 }
616915dd 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
d46ce6a4 110/* frees everything but actual constraints */
111/* This function should only be used if you have
112 other references to unshared constraints
113*/
114static void constraintList_freeShallow (/*@only@*/ constraintList c)
115{
116 if (constraintList_isDefined(c) )
bb25bea6 117 {
118 free (c->elements);
119 c->elements = NULL;
120 c->nelements = -1;
121 c->nspace = -1;
122 }
d46ce6a4 123 free (c);
bb25bea6 124 c = NULL;
125}
126
28bf4b0b 127/*@only@*/ constraintList constraintList_addList (/*@only@*/ /*@returned@*/ constraintList s, /*@observer@*/ constraintList newList)
bb25bea6 128{
129 llassert(constraintList_isDefined(s) );
28bf4b0b 130 llassert(constraintList_isDefined(newList) );
bb25bea6 131
28bf4b0b 132 if (newList == constraintList_undefined)
bb25bea6 133 return s;
134
28bf4b0b 135 constraintList_elements (newList, elem)
bb25bea6 136 {
137 s = constraintList_add (s, constraint_copy(elem) );
138 }
139 end_constraintList_elements;
140
141 return s;
d46ce6a4 142}
143
28bf4b0b 144constraintList constraintList_addListFree (/*@returned@*/ constraintList s, /*@only@*/ constraintList newList)
616915dd 145{
84c9ffbf 146 llassert(constraintList_isDefined(s) );
28bf4b0b 147 llassert(constraintList_isDefined(newList) );
616915dd 148
28bf4b0b 149 if (constraintList_isUndefined(newList) )
616915dd 150 return s;
151
28bf4b0b 152 constraintList_elements_private_only(newList, elem)
616915dd 153 {
154 s = constraintList_add (s, elem);
155 }
28bf4b0b 156 end_constraintList_elements_private_only
d46ce6a4 157
28bf4b0b 158 constraintList_freeShallow(newList);
616915dd 159 return s;
160}
161
920a3797 162
163extern /*@only@*/ cstring constraintList_unparse ( /*@observer@*/ constraintList s) /*@*/
164{
165 return (constraintList_print(s));
920a3797 166}
167
168
169/*@only@*/ cstring
28bf4b0b 170constraintList_print (/*@temp@*/ constraintList s) /*@*/
616915dd 171{
172 int i;
173 cstring st = cstring_undefined;
174 bool first = TRUE;
60eced23 175
176 if (!constraintList_isDefined (s))
177 {
178 return cstring_makeLiteral ("<undefined>");
179 }
616915dd 180
181 if (s->nelements == 0)
d46ce6a4 182 {
183 st = cstring_makeLiteral("<List Empty>");
184 return st;
185 }
186
616915dd 187 for (i = 0; i < s->nelements; i++)
188 {
189 cstring type = cstring_undefined;
190 constraint current = s->elements[i];
191
28bf4b0b 192 if (constraint_isDefined(current) )
616915dd 193 {
90bc41f7 194 cstring temp1;
195 if ( context_getFlag (FLG_ORCONSTRAINT) )
196 temp1 = constraint_printOr(current);
197 else
198 temp1 = constraint_print(current);
616915dd 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 }
d46ce6a4 211 } //end for
212
616915dd 213 return st;
214}
215
8f299805 216void constraintList_printErrorPostConditions (constraintList s, fileloc loc)
217{
218
219 constraintList_elements (s, elem)
220 {
28bf4b0b 221 if (constraint_isDefined(elem))
8f299805 222 {
223 constraint_printErrorPostCondition (elem, loc);
224 }
225 }
226 end_constraintList_elements;
227 return;
228}
229
616915dd 230void constraintList_printError (constraintList s, fileloc loc)
231{
232
bb25bea6 233 constraintList_elements (s, elem)
616915dd 234 {
28bf4b0b 235 if (constraint_isDefined(elem) )
616915dd 236 {
84380658 237 if (constraint_isPost(elem) )
238 constraint_printErrorPostCondition (elem, loc);
239 else
240 constraint_printError (elem, loc);
616915dd 241 }
242 }
bb25bea6 243 end_constraintList_elements;
616915dd 244 return;
245}
246
8f299805 247
616915dd 248cstring
249constraintList_printDetailed (constraintList s)
250{
251 int i;
252 cstring st = cstring_undefined;
253 bool first = TRUE;
254
60eced23 255 if (!constraintList_isDefined (s))
256 {
257 return cstring_makeLiteral ("<undefined>");
258 }
259
616915dd 260 if (s->nelements == 0)
d46ce6a4 261 {
262 st = cstring_makeLiteral("<List Empty>");
263 return st;
264 }
265
616915dd 266 for (i = 0; i < s->nelements; i++)
267 {
268 cstring type = cstring_undefined;
269 constraint current = s->elements[i];
270
28bf4b0b 271 if (constraint_isDefined(current ) )
616915dd 272 {
273 cstring temp1 = constraint_printDetailed (current);
274 type = message ("%s %s\n", type, temp1 );
d46ce6a4 275 cstring_free(temp1);
616915dd 276 }
277
278 if (first)
279 {
280 st = type;
281 first = FALSE;
920a3797 282 type = NULL;
616915dd 283 }
284 else
285 {
920a3797 286 st = message ("%q %q", st, type);
616915dd 287 }
288 }
289 return st;
290}
291
292/*{ x: constraint | (x in l1 -> resolve (x, l2) || (x in l2 -> resolve (x, l1)
293} */
294
295constraintList
bb25bea6 296constraintList_logicalOr (/*@observer@*/ constraintList l1, /*@observer@*/ constraintList l2)
616915dd 297{
298 constraint temp;
299 constraintList ret;
bb25bea6 300 DPRINTF ( (message ("Logical or on %s and %s",
616915dd 301 constraintList_print(l1),
302 constraintList_print(l2)) ) );
303
c3e695ff 304 ret = constraintList_makeNew();
bb25bea6 305 constraintList_elements (l1, el)
616915dd 306 {
28bf4b0b 307 temp = constraint_substitute (el, l2);
616915dd 308
28bf4b0b 309 if (constraintList_resolve (el, l2) || constraintList_resolve(temp,l2) )
616915dd 310 { /*avoid redundant constraints*/
28bf4b0b 311 if (!constraintList_resolve (el, ret) )
bb25bea6 312 {
313 constraint temp2;
314 temp2 = constraint_copy(el);
315 ret = constraintList_add (ret, temp2);
316 }
616915dd 317 }
d46ce6a4 318 constraint_free(temp);
616915dd 319 }
bb25bea6 320 end_constraintList_elements;
616915dd 321
bb25bea6 322 constraintList_elements (l2, el)
616915dd 323 {
28bf4b0b 324 temp = constraint_substitute (el, l1);
616915dd 325
28bf4b0b 326 if (constraintList_resolve (el, l1) || constraintList_resolve(temp,l1) )
616915dd 327 {
328 /*avoid redundant constraints*/
28bf4b0b 329 if (!constraintList_resolve (el, ret) )
bb25bea6 330 {
331 constraint temp2;
332 temp2 = constraint_copy(el);
333 ret = constraintList_add (ret, temp2);
334 }
616915dd 335 }
d46ce6a4 336 constraint_free(temp);
616915dd 337 }
bb25bea6 338 end_constraintList_elements;
616915dd 339
340
341 return ret;
342}
343
344void
bb25bea6 345constraintList_free (/*@only@*/ constraintList s)
616915dd 346{
347 int i;
bb25bea6 348
349 llassert(constraintList_isDefined(s) );
350
351
616915dd 352 for (i = 0; i < s->nelements; i++)
353 {
bb25bea6 354 constraint_free (s->elements[i]);
616915dd 355 }
356
357 sfree (s->elements);
bb25bea6 358 s->elements = NULL;
359 s->nelements = -1;
360 s->nspace = -1;
616915dd 361 sfree (s);
bb25bea6 362 s = NULL;
616915dd 363}
364
365constraintList
03d670b6 366constraintList_copy (/*@observer@*/ /*@temp@*/ constraintList s)
616915dd 367{
c3e695ff 368 constraintList ret = constraintList_makeNew ();
616915dd 369
bb25bea6 370 constraintList_elements (s, el)
616915dd 371 {
372 ret = constraintList_add (ret, constraint_copy (el));
bb25bea6 373 } end_constraintList_elements;
616915dd 374
375 return ret;
376}
377
378constraintList constraintList_preserveOrig (constraintList c)
379{
d46ce6a4 380 DPRINTF((message("constraintList_preserveOrig preserving the originial constraints for %s ", constraintList_print (c) ) ));
381
382 constraintList_elements_private (c, el)
616915dd 383 {
384 el = constraint_preserveOrig (el);
385 }
d46ce6a4 386 end_constraintList_elements_private;
616915dd 387 return c;
388}
389
03d670b6 390constraintList constraintList_preserveCallInfo (/*@returned@*/ constraintList c,/*@observer@*/ /*@dependent@*/ /*@observer@*/ exprNode fcn)
4ab867d6 391{
dc7f6a51 392 DPRINTF((message("constraintList_preserveCallInfo %s ", constraintList_print (c) ) ));
4ab867d6 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
3814599d 404constraintList constraintList_single (constraint c)
405{
406 constraintList res;
407 res = constraintList_makeNew();
408 res = constraintList_add (res, c);
409 return res;
410}
4ab867d6 411
28bf4b0b 412constraintList constraintList_addGeneratingExpr (constraintList c,/*@dependent@*/ exprNode e)
9280addf 413{
414 DPRINTF ((message ("entering constraintList_addGeneratingExpr for %s ", exprNode_unparse(e) ) ));
415
d46ce6a4 416 constraintList_elements_private (c, el)
9280addf 417 {
418 DPRINTF ((message ("setting generatingExpr for %s to %s", constraint_print(el), exprNode_unparse(e) ) ));
419 el = constraint_addGeneratingExpr (el, e);
420 }
d46ce6a4 421 end_constraintList_elements_private;
9280addf 422 return c;
423}
424
d46ce6a4 425/*@only@*/ constraintList constraintList_doFixResult (/*@only@*/constraintList postconditions, exprNode fcnCall)
616915dd 426{
427 constraintList ret;
c3e695ff 428 ret = constraintList_makeNew();
d46ce6a4 429 constraintList_elements_private (postconditions, el)
616915dd 430 {
431 ret = constraintList_add (ret, constraint_doFixResult (el, fcnCall) );
432 }
d46ce6a4 433 end_constraintList_elements_private;
616915dd 434
d46ce6a4 435 constraintList_free(postconditions);
616915dd 436 return ret;
437}
438
28bf4b0b 439/*@only@*/ constraintList constraintList_doSRefFixConstraintParam (constraintList preconditions, /*@temp@*/ /*@observer@*/ exprNodeList arglist)
616915dd 440{
441 constraintList ret;
c3e695ff 442 ret = constraintList_makeNew();
616915dd 443
bb25bea6 444 constraintList_elements (preconditions, el)
616915dd 445 {
446 ret = constraintList_add(ret, constraint_doSRefFixConstraintParam (el, arglist) );
447 }
bb25bea6 448 end_constraintList_elements;
d46ce6a4 449
450 constraintList_free (preconditions);
616915dd 451
452 return ret;
453}
28bf4b0b 454constraintList constraintList_doSRefFixBaseParam (constraintList preconditions, /*@observer@*/
616915dd 455 exprNodeList arglist)
456{
457 constraintList ret;
bb25bea6 458 constraint temp;
c3e695ff 459 ret = constraintList_makeNew();
616915dd 460
bb25bea6 461 constraintList_elements (preconditions, el)
616915dd 462 {
bb25bea6 463 temp = constraint_copy(el);
464 ret = constraintList_add(ret, constraint_doSRefFixBaseParam (temp, arglist) );
616915dd 465 }
bb25bea6 466 end_constraintList_elements;
616915dd 467
468 return ret;
469}
470
471constraintList constraintList_togglePost (/*@returned@*/ constraintList c)
472{
d46ce6a4 473 constraintList_elements_private (c, el)
616915dd 474 {
84c9ffbf 475 el = constraint_togglePost(el);
2934b455 476 if (constraint_hasOrig(el) )
4ab867d6 477 {
2934b455 478 el = constraint_togglePostOrig (el);
4ab867d6 479 }
616915dd 480 }
d46ce6a4 481 end_constraintList_elements_private;
616915dd 482 return c;
483}
484
920a3797 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
28bf4b0b 501 c = reader_getWord(&s);
920a3797 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
519void 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
616915dd 529
02984642 530constraintList constraintList_sort (/*@returned@*/ constraintList ret)
531{
532 qsort (ret->elements, (size_t) ret->nelements,
533 (sizeof (*ret->elements) ), constraint_compare);
534 return ret;
535}
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