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65f973be | 1 | /* |
11db3170 | 2 | ** Splint - annotation-assisted static program checker |
77d37419 | 3 | ** Copyright (C) 1994-2002 University of Virginia, |
65f973be | 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 |
65f973be | 23 | */ |
24 | ||
616915dd | 25 | /* |
4ab867d6 | 26 | ** constraint.c |
616915dd | 27 | */ |
28 | ||
b7b694d6 | 29 | /* #define DEBUGPRINT 1 */ |
616915dd | 30 | |
31 | # include <ctype.h> /* for isdigit */ | |
1b8ae690 | 32 | # include "splintMacros.nf" |
616915dd | 33 | # include "basic.h" |
34 | # include "cgrammar.h" | |
35 | # include "cgrammar_tokens.h" | |
f0171cff | 36 | |
616915dd | 37 | # include "exprChecks.h" |
616915dd | 38 | # include "exprNodeSList.h" |
616915dd | 39 | |
40 | /*@i33*/ | |
616915dd | 41 | |
c3e695ff | 42 | /*@access exprNode @*/ |
616915dd | 43 | |
d46ce6a4 | 44 | |
28bf4b0b | 45 | static /*@only@*/ cstring constraint_printDetailedPostCondition (/*@observer@*/ /*@temp@*/ constraint p_c); |
2934b455 | 46 | |
47 | ||
ccf0a4a8 | 48 | static /*@notnull@*/ /*@special@*/ constraint constraint_makeNew (void) |
49 | /*@post:isnull result->or, result->orig, result->generatingExpr, result->fcnPre @*/ | |
50 | /*@defines result->or, result->generatingExpr, result->orig, result->fcnPre @*/; | |
4ab867d6 | 51 | |
920a3797 | 52 | static void |
53 | advanceField (char **s) | |
54 | { | |
28bf4b0b | 55 | reader_checkChar (s, '@'); |
920a3797 | 56 | } |
57 | ||
15b3d2b2 | 58 | # if 0 |
28bf4b0b | 59 | static constraint makeConstraintParse2 (constraintExpr l, lltok relOp, exprNode cconstant) |
616915dd | 60 | { |
61 | char *t; | |
62 | int c; | |
63 | constraint ret; | |
ccf0a4a8 | 64 | ret = constraint_makeNew (); |
bb7c2085 | 65 | llassert (constraintExpr_isDefined (l)); |
d46ce6a4 | 66 | |
616915dd | 67 | ret->lexpr = constraintExpr_copy (l); |
2934b455 | 68 | |
616915dd | 69 | |
70 | if (relOp.tok == GE_OP) | |
71 | ret->ar = GTE; | |
72 | else if (relOp.tok == LE_OP) | |
73 | ret->ar = LTE; | |
74 | else if (relOp.tok == EQ_OP) | |
75 | ret->ar = EQ; | |
76 | else | |
bb7c2085 | 77 | llfatalbug (message ("Unsupported relational operator")); |
616915dd | 78 | |
79 | ||
bb7c2085 | 80 | t = cstring_toCharsSafe (exprNode_unparse (cconstant)); |
81 | c = atoi ( t); | |
616915dd | 82 | ret->expr = constraintExpr_makeIntLiteral (c); |
83 | ||
84 | ret->post = TRUE; | |
bb7c2085 | 85 | DPRINTF (("GENERATED CONSTRAINT:")); |
86 | DPRINTF ((message ("%s", constraint_print (ret)))); | |
616915dd | 87 | return ret; |
88 | } | |
15b3d2b2 | 89 | # endif |
616915dd | 90 | |
c3e695ff | 91 | bool constraint_same (constraint c1, constraint c2) |
90bc41f7 | 92 | { |
15b3d2b2 | 93 | llassert (c1 != NULL); |
94 | llassert (c2 != NULL); | |
90bc41f7 | 95 | |
15b3d2b2 | 96 | if (c1->ar != c2->ar) |
97 | { | |
98 | return FALSE; | |
99 | } | |
100 | ||
bb7c2085 | 101 | if (!constraintExpr_similar (c1->lexpr, c2->lexpr)) |
15b3d2b2 | 102 | { |
103 | return FALSE; | |
104 | } | |
90bc41f7 | 105 | |
bb7c2085 | 106 | if (!constraintExpr_similar (c1->expr, c2->expr)) |
15b3d2b2 | 107 | { |
108 | return FALSE; | |
109 | } | |
90bc41f7 | 110 | |
111 | return TRUE; | |
112 | } | |
616915dd | 113 | |
114 | constraint makeConstraintParse3 (constraintExpr l, lltok relOp, constraintExpr r) | |
115 | { | |
116 | constraint ret; | |
bb7c2085 | 117 | ret = constraint_makeNew (); |
118 | llassert (constraintExpr_isDefined (l)); | |
616915dd | 119 | |
120 | ret->lexpr = constraintExpr_copy (l); | |
616915dd | 121 | |
122 | if (relOp.tok == GE_OP) | |
123 | ret->ar = GTE; | |
124 | else if (relOp.tok == LE_OP) | |
125 | ret->ar = LTE; | |
126 | else if (relOp.tok == EQ_OP) | |
127 | ret->ar = EQ; | |
128 | else | |
bb7c2085 | 129 | llfatalbug ( message ("Unsupported relational operator")); |
616915dd | 130 | |
131 | ret->expr = constraintExpr_copy (r); | |
132 | ||
133 | ret->post = TRUE; | |
90bc41f7 | 134 | |
bb7c2085 | 135 | ret->orig = constraint_copy (ret); |
90bc41f7 | 136 | |
137 | ret = constraint_simplify (ret); | |
b7b694d6 | 138 | /* ret->orig = ret; */ |
139 | ||
bb7c2085 | 140 | DPRINTF (("GENERATED CONSTRAINT:")); |
141 | DPRINTF ((message ("%s", constraint_print (ret)))); | |
616915dd | 142 | return ret; |
143 | } | |
144 | ||
28bf4b0b | 145 | constraint constraint_copy (/*@temp@*/ /*@observer@*/ constraint c) |
616915dd | 146 | { |
147 | constraint ret; | |
90bc41f7 | 148 | |
bb7c2085 | 149 | llassert (constraint_isDefined (c)); |
b7b694d6 | 150 | |
bb7c2085 | 151 | ret = constraint_makeNew (); |
616915dd | 152 | ret->lexpr = constraintExpr_copy (c->lexpr); |
153 | ret->ar = c->ar; | |
154 | ret->expr = constraintExpr_copy (c->expr); | |
155 | ret->post = c->post; | |
795e7f34 | 156 | /*@-assignexpose@*/ |
28bf4b0b | 157 | ret->generatingExpr = c->generatingExpr; |
795e7f34 | 158 | /*@=assignexpose@*/ |
9280addf | 159 | |
616915dd | 160 | /*@i33 fix this*/ |
161 | if (c->orig != NULL) | |
162 | ret->orig = constraint_copy (c->orig); | |
163 | else | |
164 | ret->orig = NULL; | |
90bc41f7 | 165 | |
166 | if (c->or != NULL) | |
167 | ret->or = constraint_copy (c->or); | |
168 | else | |
169 | ret->or = NULL; | |
4ab867d6 | 170 | |
171 | ret->fcnPre = c->fcnPre; | |
90bc41f7 | 172 | |
616915dd | 173 | return ret; |
174 | } | |
175 | ||
176 | /*like copy expect it doesn't allocate memory for the constraint*/ | |
177 | ||
d46ce6a4 | 178 | void constraint_overWrite (constraint c1, constraint c2) |
616915dd | 179 | { |
bb7c2085 | 180 | llassert (constraint_isDefined (c1)); |
d46ce6a4 | 181 | |
182 | llassert (c1 != c2); | |
183 | ||
bb7c2085 | 184 | DPRINTF ((message ("OverWriteing constraint %q with %q", constraint_print (c1), |
185 | constraint_print (c2)))); | |
d46ce6a4 | 186 | |
bb7c2085 | 187 | constraintExpr_free (c1->lexpr); |
188 | constraintExpr_free (c1->expr); | |
d46ce6a4 | 189 | |
616915dd | 190 | c1->lexpr = constraintExpr_copy (c2->lexpr); |
191 | c1->ar = c2->ar; | |
192 | c1->expr = constraintExpr_copy (c2->expr); | |
193 | c1->post = c2->post; | |
d46ce6a4 | 194 | |
195 | if (c1->orig != NULL) | |
196 | constraint_free (c1->orig); | |
197 | ||
616915dd | 198 | if (c2->orig != NULL) |
199 | c1->orig = constraint_copy (c2->orig); | |
200 | else | |
201 | c1->orig = NULL; | |
90bc41f7 | 202 | |
d46ce6a4 | 203 | /*@i33 make sure that the or is freed correctly*/ |
204 | if (c1->or != NULL) | |
205 | constraint_free (c1->or); | |
206 | ||
90bc41f7 | 207 | if (c2->or != NULL) |
208 | c1->or = constraint_copy (c2->or); | |
209 | else | |
210 | c1->or = NULL; | |
4ab867d6 | 211 | |
212 | c1->fcnPre = c2->fcnPre; | |
795e7f34 | 213 | |
214 | /*@-assignexpose@*/ | |
4ab867d6 | 215 | c1->generatingExpr = c2->generatingExpr; |
795e7f34 | 216 | /*@=assignexpose@*/ |
616915dd | 217 | } |
218 | ||
616915dd | 219 | |
220 | ||
d46ce6a4 | 221 | static /*@notnull@*/ /*@special@*/ constraint constraint_makeNew (void) |
ccf0a4a8 | 222 | /*@post:isnull result->or, result->orig, result->generatingExpr, result->fcnPre @*/ |
223 | /*@defines result->or, result->generatingExpr, result->orig, result->fcnPre @*/ | |
616915dd | 224 | { |
225 | constraint ret; | |
bb7c2085 | 226 | ret = dmalloc (sizeof (*ret)); |
616915dd | 227 | ret->lexpr = NULL; |
228 | ret->expr = NULL; | |
229 | ret->ar = LT; | |
230 | ret->post = FALSE; | |
231 | ret->orig = NULL; | |
90bc41f7 | 232 | ret->or = NULL; |
9280addf | 233 | ret->generatingExpr = NULL; |
4ab867d6 | 234 | ret->fcnPre = NULL; |
dc92450f | 235 | return ret; |
616915dd | 236 | } |
237 | ||
b37cf05e | 238 | constraint constraint_addGeneratingExpr (/*@returned@*/ constraint c, /*@exposed@*/ exprNode e) |
9280addf | 239 | { |
240 | ||
241 | if (c->generatingExpr == NULL) | |
242 | { | |
28bf4b0b | 243 | c->generatingExpr = e; |
bb7c2085 | 244 | DPRINTF ((message ("setting generatingExpr for %s to %s", constraint_print (c), exprNode_unparse (e)) )); |
9280addf | 245 | } |
246 | else | |
247 | { | |
bb7c2085 | 248 | DPRINTF ((message ("Not setting generatingExpr for %s to %s", constraint_print (c), exprNode_unparse (e)) )); |
9280addf | 249 | } |
250 | return c; | |
251 | } | |
252 | ||
4ab867d6 | 253 | constraint constraint_origAddGeneratingExpr (/*@returned@*/ constraint c, exprNode e) |
254 | { | |
255 | ||
256 | if (c->orig != constraint_undefined) | |
257 | { | |
bb7c2085 | 258 | c->orig = constraint_addGeneratingExpr (c->orig, e); |
4ab867d6 | 259 | } |
260 | else | |
261 | { | |
bb7c2085 | 262 | DPRINTF ((message ("constraint_origAddGeneratingExpr: Not setting generatingExpr for %s to %s", constraint_print (c), exprNode_unparse (e)) )); |
4ab867d6 | 263 | } |
264 | return c; | |
265 | } | |
266 | ||
bb7c2085 | 267 | constraint constraint_setFcnPre (/*@returned@*/ constraint c) |
4ab867d6 | 268 | { |
269 | ||
270 | if (c->orig != constraint_undefined) | |
271 | { | |
272 | c->orig->fcnPre = TRUE; | |
273 | } | |
274 | else | |
275 | { | |
276 | c->fcnPre = TRUE; | |
bb7c2085 | 277 | DPRINTF (( message ("Warning Setting fcnPre directly"))); |
4ab867d6 | 278 | } |
279 | return c; | |
280 | } | |
281 | ||
282 | ||
283 | ||
284 | ||
616915dd | 285 | fileloc constraint_getFileloc (constraint c) |
286 | { | |
bb7c2085 | 287 | if (exprNode_isDefined (c->generatingExpr)) |
288 | return (fileloc_copy (exprNode_getfileloc (c->generatingExpr))); | |
9280addf | 289 | |
bb7c2085 | 290 | return (constraintExpr_getFileloc (c->lexpr)); |
616915dd | 291 | |
292 | ||
293 | } | |
294 | ||
9280addf | 295 | static bool checkForMaxSet (constraint c) |
296 | { | |
bb7c2085 | 297 | if (constraintExpr_hasMaxSet (c->lexpr) || constraintExpr_hasMaxSet (c->expr)) |
9280addf | 298 | return TRUE; |
299 | ||
300 | return FALSE; | |
301 | } | |
302 | ||
bb7c2085 | 303 | bool constraint_hasMaxSet (constraint c) |
9280addf | 304 | { |
bb7c2085 | 305 | if (checkForMaxSet (c)) |
03d670b6 | 306 | return TRUE; |
307 | ||
dc92450f | 308 | if (c->orig != NULL) |
9280addf | 309 | { |
bb7c2085 | 310 | if (checkForMaxSet (c->orig)) |
9280addf | 311 | return TRUE; |
312 | } | |
313 | ||
03d670b6 | 314 | return FALSE; |
9280addf | 315 | } |
316 | ||
28bf4b0b | 317 | constraint constraint_makeReadSafeExprNode ( exprNode po, exprNode ind) |
616915dd | 318 | { |
bb7c2085 | 319 | constraint ret = constraint_makeNew (); |
b7b694d6 | 320 | |
28bf4b0b | 321 | po = po; |
322 | ind = ind; | |
bb7c2085 | 323 | ret->lexpr = constraintExpr_makeMaxReadExpr (po); |
616915dd | 324 | ret->ar = GTE; |
325 | ret->expr = constraintExpr_makeValueExpr (ind); | |
d46ce6a4 | 326 | ret->post = FALSE; |
616915dd | 327 | return ret; |
328 | } | |
329 | ||
28bf4b0b | 330 | constraint constraint_makeWriteSafeInt ( exprNode po, int ind) |
616915dd | 331 | { |
bb7c2085 | 332 | constraint ret = constraint_makeNew (); |
616915dd | 333 | |
334 | ||
bb7c2085 | 335 | ret->lexpr =constraintExpr_makeMaxSetExpr (po); |
616915dd | 336 | ret->ar = GTE; |
c3e695ff | 337 | ret->expr = constraintExpr_makeIntLiteral (ind); |
616915dd | 338 | /*@i1*/return ret; |
339 | } | |
340 | ||
84c9ffbf | 341 | constraint constraint_makeSRefSetBufferSize (sRef s, long int size) |
616915dd | 342 | { |
bb7c2085 | 343 | constraint ret = constraint_makeNew (); |
4ab867d6 | 344 | ret->lexpr = constraintExpr_makeSRefMaxset (s); |
616915dd | 345 | ret->ar = EQ; |
84c9ffbf | 346 | ret->expr = constraintExpr_makeIntLiteral ((int)size); |
616915dd | 347 | ret->post = TRUE; |
348 | /*@i1*/return ret; | |
349 | } | |
350 | ||
351 | constraint constraint_makeSRefWriteSafeInt (sRef s, int ind) | |
352 | { | |
bb7c2085 | 353 | constraint ret = constraint_makeNew (); |
616915dd | 354 | |
355 | ||
bb7c2085 | 356 | ret->lexpr = constraintExpr_makeSRefMaxset ( s); |
616915dd | 357 | ret->ar = GTE; |
c3e695ff | 358 | ret->expr = constraintExpr_makeIntLiteral (ind); |
616915dd | 359 | ret->post = TRUE; |
360 | /*@i1*/return ret; | |
361 | } | |
362 | ||
363 | /* drl added 01/12/2000 | |
364 | ||
bb7c2085 | 365 | makes the constraint: Ensures index <= MaxRead (buffer) */ |
616915dd | 366 | |
bb7c2085 | 367 | constraint constraint_makeEnsureLteMaxRead (exprNode index, exprNode buffer) |
616915dd | 368 | { |
bb7c2085 | 369 | constraint ret = constraint_makeNew (); |
616915dd | 370 | |
371 | ret->lexpr = constraintExpr_makeValueExpr (index); | |
372 | ret->ar = LTE; | |
bb7c2085 | 373 | ret->expr = constraintExpr_makeMaxReadExpr (buffer); |
616915dd | 374 | ret->post = TRUE; |
375 | return ret; | |
376 | } | |
377 | ||
378 | constraint constraint_makeWriteSafeExprNode (exprNode po, exprNode ind) | |
379 | { | |
bb7c2085 | 380 | constraint ret = constraint_makeNew (); |
616915dd | 381 | |
382 | ||
bb7c2085 | 383 | ret->lexpr =constraintExpr_makeMaxSetExpr (po); |
616915dd | 384 | ret->ar = GTE; |
385 | ret->expr = constraintExpr_makeValueExpr (ind); | |
386 | /*@i1*/return ret; | |
387 | } | |
388 | ||
389 | ||
28bf4b0b | 390 | constraint constraint_makeReadSafeInt ( exprNode t1, int index) |
616915dd | 391 | { |
bb7c2085 | 392 | constraint ret = constraint_makeNew (); |
616915dd | 393 | |
bb7c2085 | 394 | ret->lexpr = constraintExpr_makeMaxReadExpr (t1); |
616915dd | 395 | ret->ar = GTE; |
28bf4b0b | 396 | ret->expr = constraintExpr_makeIntLiteral (index); |
d46ce6a4 | 397 | ret->post = FALSE; |
616915dd | 398 | return ret; |
399 | } | |
400 | ||
470b7798 | 401 | constraint constraint_makeSRefReadSafeInt (sRef s, int ind) |
402 | { | |
bb7c2085 | 403 | constraint ret = constraint_makeNew (); |
470b7798 | 404 | |
405 | ||
bb7c2085 | 406 | ret->lexpr = constraintExpr_makeSRefMaxRead (s); |
470b7798 | 407 | ret->ar = GTE; |
c3e695ff | 408 | ret->expr = constraintExpr_makeIntLiteral (ind); |
470b7798 | 409 | ret->post = TRUE; |
410 | /*@i1*/return ret; | |
411 | } | |
412 | ||
28bf4b0b | 413 | constraint constraint_makeEnsureMaxReadAtLeast (exprNode t1, exprNode t2, fileloc sequencePoint) |
616915dd | 414 | { |
d46ce6a4 | 415 | constraint ret; |
616915dd | 416 | |
bb7c2085 | 417 | ret = constraint_makeReadSafeExprNode (t1, t2); |
b7b694d6 | 418 | ret->lexpr = constraintExpr_setFileloc (ret->lexpr, sequencePoint); |
616915dd | 419 | ret->post = TRUE; |
420 | ||
616915dd | 421 | return ret; |
422 | } | |
423 | ||
d46ce6a4 | 424 | static constraint constraint_makeEnsuresOpConstraintExpr (/*@only@*/ constraintExpr c1, /*@only@*/ constraintExpr c2, fileloc sequencePoint, arithType ar) |
470b7798 | 425 | { |
426 | ||
427 | constraint ret; | |
428 | ||
bb7c2085 | 429 | llassert (constraintExpr_isDefined (c1) && constraintExpr_isDefined (c2)); |
470b7798 | 430 | |
bb7c2085 | 431 | ret = constraint_makeNew (); |
470b7798 | 432 | |
433 | ret->lexpr = c1; | |
434 | ret->ar = ar; | |
435 | ret->post = TRUE; | |
436 | ret->expr = c2; | |
437 | ret->lexpr = constraintExpr_setFileloc (ret->lexpr, sequencePoint); | |
438 | return ret; | |
439 | } | |
616915dd | 440 | |
28bf4b0b | 441 | static constraint constraint_makeEnsuresOp (/*@dependent@*/ exprNode e1, /*@dependent@*/ exprNode e2, fileloc sequencePoint, arithType ar) |
616915dd | 442 | { |
470b7798 | 443 | constraintExpr c1, c2; |
444 | constraint ret; | |
616915dd | 445 | exprNode e; |
470b7798 | 446 | |
bb7c2085 | 447 | if (! (exprNode_isDefined (e1) && exprNode_isDefined (e2))) |
616915dd | 448 | { |
bb7c2085 | 449 | llcontbug ((message ("null exprNode, Exprnodes are %s and %s", |
450 | exprNode_unparse (e1), exprNode_unparse (e2)) | |
451 | )); | |
616915dd | 452 | } |
470b7798 | 453 | |
28bf4b0b | 454 | e = e1; |
470b7798 | 455 | c1 = constraintExpr_makeValueExpr (e); |
456 | ||
28bf4b0b | 457 | e = e2; |
470b7798 | 458 | c2 = constraintExpr_makeValueExpr (e); |
459 | ||
460 | ret = constraint_makeEnsuresOpConstraintExpr (c1, c2, sequencePoint, ar); | |
616915dd | 461 | |
616915dd | 462 | return ret; |
463 | } | |
464 | ||
465 | ||
466 | /* make constraint ensures e1 == e2 */ | |
467 | ||
468 | constraint constraint_makeEnsureEqual (exprNode e1, exprNode e2, fileloc sequencePoint) | |
469 | { | |
bb7c2085 | 470 | return ( constraint_makeEnsuresOp (e1, e2, sequencePoint, EQ)); |
616915dd | 471 | } |
472 | ||
473 | /*make constraint ensures e1 < e2 */ | |
474 | constraint constraint_makeEnsureLessThan (exprNode e1, exprNode e2, fileloc sequencePoint) | |
475 | { | |
470b7798 | 476 | constraintExpr t1, t2; |
477 | ||
478 | t1 = constraintExpr_makeValueExpr (e1); | |
479 | t2 = constraintExpr_makeValueExpr (e2); | |
480 | ||
481 | /*change this to e1 <= (e2 -1) */ | |
482 | ||
483 | t2 = constraintExpr_makeDecConstraintExpr (t2); | |
484 | ||
bb7c2085 | 485 | return ( constraint_makeEnsuresOpConstraintExpr (t1, t2, sequencePoint, LTE)); |
616915dd | 486 | } |
487 | ||
488 | constraint constraint_makeEnsureLessThanEqual (exprNode e1, exprNode e2, fileloc sequencePoint) | |
489 | { | |
bb7c2085 | 490 | return ( constraint_makeEnsuresOp (e1, e2, sequencePoint, LTE)); |
616915dd | 491 | } |
492 | ||
493 | constraint constraint_makeEnsureGreaterThan (exprNode e1, exprNode e2, fileloc sequencePoint) | |
494 | { | |
470b7798 | 495 | constraintExpr t1, t2; |
496 | ||
497 | t1 = constraintExpr_makeValueExpr (e1); | |
498 | t2 = constraintExpr_makeValueExpr (e2); | |
499 | ||
500 | ||
501 | /* change this to e1 >= (e2 + 1) */ | |
502 | t2 = constraintExpr_makeIncConstraintExpr (t2); | |
503 | ||
504 | ||
bb7c2085 | 505 | return ( constraint_makeEnsuresOpConstraintExpr (t1, t2, sequencePoint, GTE)); |
616915dd | 506 | } |
507 | ||
508 | constraint constraint_makeEnsureGreaterThanEqual (exprNode e1, exprNode e2, fileloc sequencePoint) | |
509 | { | |
bb7c2085 | 510 | return ( constraint_makeEnsuresOp (e1, e2, sequencePoint, GTE)); |
616915dd | 511 | } |
512 | ||
513 | ||
514 | exprNode exprNode_copyConstraints (/*@returned@*/ exprNode dst, exprNode src) | |
515 | { | |
bb7c2085 | 516 | constraintList_free (dst->ensuresConstraints); |
517 | constraintList_free (dst->requiresConstraints); | |
518 | constraintList_free (dst->trueEnsuresConstraints); | |
519 | constraintList_free (dst->falseEnsuresConstraints); | |
d46ce6a4 | 520 | |
bb7c2085 | 521 | dst->ensuresConstraints = constraintList_copy (src->ensuresConstraints); |
522 | dst->requiresConstraints = constraintList_copy (src->requiresConstraints); | |
523 | dst->trueEnsuresConstraints = constraintList_copy (src->trueEnsuresConstraints); | |
524 | dst->falseEnsuresConstraints = constraintList_copy (src->falseEnsuresConstraints); | |
616915dd | 525 | return dst; |
526 | } | |
527 | ||
2934b455 | 528 | /* Makes the constraint e = e + f */ |
529 | constraint constraint_makeAddAssign (exprNode e, exprNode f, fileloc sequencePoint) | |
530 | { | |
531 | constraintExpr x1, x2, y; | |
532 | constraint ret; | |
533 | ||
bb7c2085 | 534 | ret = constraint_makeNew (); |
2934b455 | 535 | |
536 | x1 = constraintExpr_makeValueExpr (e); | |
bb7c2085 | 537 | x2 = constraintExpr_copy (x1); |
2934b455 | 538 | y = constraintExpr_makeValueExpr (f); |
539 | ||
540 | ret->lexpr = x1; | |
541 | ret->ar = EQ; | |
542 | ret->post = TRUE; | |
543 | ret->expr = constraintExpr_makeAddExpr (x2, y); | |
544 | ||
545 | ret->lexpr = constraintExpr_setFileloc (ret->lexpr, sequencePoint); | |
546 | ||
547 | return ret; | |
548 | } | |
549 | ||
550 | ||
551 | /* Makes the constraint e = e - f */ | |
552 | constraint constraint_makeSubtractAssign (exprNode e, exprNode f, fileloc sequencePoint) | |
553 | { | |
554 | constraintExpr x1, x2, y; | |
555 | constraint ret; | |
556 | ||
bb7c2085 | 557 | ret = constraint_makeNew (); |
2934b455 | 558 | |
559 | x1 = constraintExpr_makeValueExpr (e); | |
bb7c2085 | 560 | x2 = constraintExpr_copy (x1); |
2934b455 | 561 | y = constraintExpr_makeValueExpr (f); |
562 | ||
563 | ret->lexpr = x1; | |
564 | ret->ar = EQ; | |
565 | ret->post = TRUE; | |
566 | ret->expr = constraintExpr_makeSubtractExpr (x2, y); | |
567 | ||
568 | ret->lexpr = constraintExpr_setFileloc (ret->lexpr, sequencePoint); | |
569 | ||
570 | return ret; | |
571 | } | |
572 | ||
616915dd | 573 | constraint constraint_makeMaxSetSideEffectPostDecrement (exprNode e, fileloc sequencePoint) |
574 | { | |
bb7c2085 | 575 | constraint ret = constraint_makeNew (); |
616915dd | 576 | |
616915dd | 577 | ret->lexpr = constraintExpr_makeValueExpr (e); |
578 | ret->ar = EQ; | |
579 | ret->post = TRUE; | |
580 | ret->expr = constraintExpr_makeValueExpr (e); | |
581 | ret->expr = constraintExpr_makeDecConstraintExpr (ret->expr); | |
616915dd | 582 | ret->lexpr = constraintExpr_setFileloc (ret->lexpr, sequencePoint); |
616915dd | 583 | return ret; |
584 | } | |
585 | constraint constraint_makeMaxSetSideEffectPostIncrement (exprNode e, fileloc sequencePoint) | |
586 | { | |
bb7c2085 | 587 | constraint ret = constraint_makeNew (); |
616915dd | 588 | |
616915dd | 589 | ret->lexpr = constraintExpr_makeValueExpr (e); |
590 | ret->ar = EQ; | |
591 | ret->post = TRUE; | |
592 | ret->expr = constraintExpr_makeValueExpr (e); | |
593 | ret->expr = constraintExpr_makeIncConstraintExpr (ret->expr); | |
594 | ||
595 | ret->lexpr = constraintExpr_setFileloc (ret->lexpr, sequencePoint); | |
616915dd | 596 | return ret; |
597 | } | |
598 | ||
599 | ||
920a3797 | 600 | void constraint_free (/*@only@*/ constraint c) |
d46ce6a4 | 601 | { |
bb7c2085 | 602 | llassert (constraint_isDefined (c)); |
d46ce6a4 | 603 | |
604 | ||
bb7c2085 | 605 | if (constraint_isDefined (c->orig)) |
d46ce6a4 | 606 | constraint_free (c->orig); |
bb7c2085 | 607 | if ( constraint_isDefined (c->or)) |
d46ce6a4 | 608 | constraint_free (c->or); |
609 | ||
bb25bea6 | 610 | |
bb7c2085 | 611 | constraintExpr_free (c->lexpr); |
612 | constraintExpr_free (c->expr); | |
bb25bea6 | 613 | |
614 | c->orig = NULL; | |
615 | c->or = NULL; | |
616 | c->lexpr = NULL; | |
617 | c->expr = NULL; | |
618 | ||
d46ce6a4 | 619 | free (c); |
620 | ||
621 | } | |
622 | ||
dc92450f | 623 | cstring arithType_print (arithType ar) /*@*/ |
616915dd | 624 | { |
625 | cstring st = cstring_undefined; | |
626 | switch (ar) | |
627 | { | |
628 | case LT: | |
a779b61e | 629 | st = cstring_makeLiteral ("<"); |
616915dd | 630 | break; |
631 | case LTE: | |
a779b61e | 632 | st = cstring_makeLiteral ("<="); |
616915dd | 633 | break; |
634 | case GT: | |
a779b61e | 635 | st = cstring_makeLiteral (">"); |
616915dd | 636 | break; |
637 | case GTE: | |
a779b61e | 638 | st = cstring_makeLiteral (">="); |
616915dd | 639 | break; |
640 | case EQ: | |
a779b61e | 641 | st = cstring_makeLiteral ("=="); |
616915dd | 642 | break; |
643 | case NONNEGATIVE: | |
a779b61e | 644 | st = cstring_makeLiteral ("NONNEGATIVE"); |
616915dd | 645 | break; |
646 | case POSITIVE: | |
a779b61e | 647 | st = cstring_makeLiteral ("POSITIVE"); |
616915dd | 648 | break; |
649 | default: | |
bb7c2085 | 650 | llassert (FALSE); |
616915dd | 651 | break; |
652 | } | |
653 | return st; | |
654 | } | |
655 | ||
8f299805 | 656 | void constraint_printErrorPostCondition (constraint c, fileloc loc) |
657 | { | |
658 | cstring string; | |
659 | fileloc errorLoc, temp; | |
660 | ||
661 | string = constraint_printDetailedPostCondition (c); | |
662 | ||
663 | errorLoc = loc; | |
664 | ||
665 | loc = NULL; | |
666 | ||
bb7c2085 | 667 | temp = constraint_getFileloc (c); |
8f299805 | 668 | |
9276a168 | 669 | |
670 | if (context_getFlag (FLG_BOUNDSCOMPACTERRORMESSAGES ) ) | |
671 | { | |
672 | string = cstring_replaceChar(string, '\n', ' '); | |
673 | } | |
674 | ||
bb7c2085 | 675 | if (fileloc_isDefined (temp)) |
8f299805 | 676 | { |
677 | errorLoc = temp; | |
678 | voptgenerror ( FLG_CHECKPOST, string, errorLoc); | |
bb7c2085 | 679 | fileloc_free (temp); |
8f299805 | 680 | } |
681 | else | |
682 | { | |
683 | voptgenerror ( FLG_CHECKPOST, string, errorLoc); | |
684 | } | |
685 | } | |
686 | ||
f4ec8018 | 687 | /*drl added 8-11-001*/ |
688 | cstring constraint_printLocation (/*@observer@*/ /*@temp@*/ constraint c) /*@*/ | |
689 | { | |
690 | cstring string, ret; | |
691 | fileloc errorLoc; | |
692 | ||
bb7c2085 | 693 | string = constraint_print (c); |
f4ec8018 | 694 | |
bb7c2085 | 695 | errorLoc = constraint_getFileloc (c); |
f4ec8018 | 696 | |
bb7c2085 | 697 | ret = message ("constraint: %q @ %q", string, fileloc_unparse (errorLoc)); |
f4ec8018 | 698 | |
bb7c2085 | 699 | fileloc_free (errorLoc); |
f4ec8018 | 700 | return ret; |
701 | ||
702 | } | |
8f299805 | 703 | |
704 | ||
705 | ||
616915dd | 706 | void constraint_printError (constraint c, fileloc loc) |
707 | { | |
708 | cstring string; | |
4ab867d6 | 709 | fileloc errorLoc, temp; |
e5f31c00 | 710 | |
711 | ||
712 | /*drl 11/26/2001 avoid printing tautological constraints */ | |
bb7c2085 | 713 | if (constraint_isAlwaysTrue (c)) |
e5f31c00 | 714 | { |
715 | return; | |
716 | } | |
717 | ||
718 | ||
616915dd | 719 | string = constraint_printDetailed (c); |
9280addf | 720 | |
721 | errorLoc = loc; | |
722 | ||
bb7c2085 | 723 | temp = constraint_getFileloc (c); |
4ab867d6 | 724 | |
bb7c2085 | 725 | if (fileloc_isDefined (temp)) |
616915dd | 726 | { |
4ab867d6 | 727 | errorLoc = temp; |
84380658 | 728 | } |
729 | else | |
730 | { | |
bb7c2085 | 731 | llassert (FALSE); |
732 | DPRINTF (("constraint %s had undefined fileloc %s", constraint_print (c), fileloc_unparse (temp))); | |
733 | fileloc_free (temp); | |
734 | errorLoc = fileloc_copy (errorLoc); | |
84380658 | 735 | } |
9276a168 | 736 | |
737 | ||
738 | if (context_getFlag (FLG_BOUNDSCOMPACTERRORMESSAGES ) ) | |
739 | { | |
740 | string = cstring_replaceChar(string, '\n', ' '); | |
741 | } | |
742 | ||
743 | ||
84380658 | 744 | if (c->post) |
745 | { | |
746 | voptgenerror (FLG_FUNCTIONPOST, string, errorLoc); | |
616915dd | 747 | } |
748 | else | |
749 | { | |
bb7c2085 | 750 | if (constraint_hasMaxSet (c)) |
751 | { | |
752 | voptgenerror (FLG_BOUNDSWRITE, string, errorLoc); | |
753 | } | |
4ab867d6 | 754 | else |
bb7c2085 | 755 | { |
756 | voptgenerror (FLG_BOUNDSREAD, string, errorLoc); | |
757 | } | |
616915dd | 758 | } |
84380658 | 759 | |
86d93ed3 | 760 | fileloc_free(errorLoc); |
616915dd | 761 | } |
762 | ||
28bf4b0b | 763 | static cstring constraint_printDeep (constraint c) |
616915dd | 764 | { |
28bf4b0b | 765 | cstring genExpr; |
616915dd | 766 | cstring st = cstring_undefined; |
767 | ||
86d93ed3 | 768 | st = constraint_print(c); |
28bf4b0b | 769 | |
4ab867d6 | 770 | if (c->orig != constraint_undefined) |
771 | { | |
bb7c2085 | 772 | st = cstring_appendChar (st, '\n'); |
773 | genExpr = exprNode_unparse (c->orig->generatingExpr); | |
774 | ||
4ab867d6 | 775 | if (!c->post) |
776 | { | |
777 | if (c->orig->fcnPre) | |
bb7c2085 | 778 | { |
779 | st = cstring_concatFree (st, message (" derived from %s precondition: %q", | |
780 | genExpr, constraint_printDeep (c->orig))); | |
781 | } | |
4ab867d6 | 782 | else |
bb7c2085 | 783 | { |
784 | st = cstring_concatFree (st, message (" needed to satisfy precondition:\n%q", | |
785 | constraint_printDeep (c->orig))); | |
786 | } | |
4ab867d6 | 787 | } |
788 | else | |
789 | { | |
bb7c2085 | 790 | st = cstring_concatFree (st, message ("derived from: %q", |
791 | constraint_printDeep (c->orig))); | |
4ab867d6 | 792 | } |
793 | } | |
794 | ||
795 | return st; | |
4ab867d6 | 796 | } |
797 | ||
2934b455 | 798 | |
799 | static /*@only@*/ cstring constraint_printDetailedPostCondition (/*@observer@*/ /*@temp@*/ constraint c) | |
8f299805 | 800 | { |
801 | cstring st = cstring_undefined; | |
28bf4b0b | 802 | cstring genExpr; |
803 | ||
bb7c2085 | 804 | st = message ("Unsatisfied ensures constraint condition:\nSplint is unable to verify the constraint %q", constraint_printDeep (c)); |
28bf4b0b | 805 | |
806 | genExpr = exprNode_unparse (c->generatingExpr); | |
807 | ||
bb7c2085 | 808 | if (context_getFlag (FLG_CONSTRAINTLOCATION)) |
8f299805 | 809 | { |
810 | cstring temp; | |
b7b694d6 | 811 | |
812 | temp = message ("\nOriginal Generating expression %q: %s\n", | |
bb7c2085 | 813 | fileloc_unparse ( exprNode_getfileloc (c->generatingExpr)), |
814 | genExpr); | |
8f299805 | 815 | st = cstring_concatFree (st, temp); |
816 | ||
bb7c2085 | 817 | if (constraint_hasMaxSet (c)) |
8f299805 | 818 | { |
819 | temp = message ("Has MaxSet\n"); | |
820 | st = cstring_concatFree (st, temp); | |
821 | } | |
822 | } | |
823 | return st; | |
824 | } | |
825 | ||
4ab867d6 | 826 | cstring constraint_printDetailed (constraint c) |
827 | { | |
828 | cstring st = cstring_undefined; | |
03d670b6 | 829 | cstring temp = cstring_undefined; |
9276a168 | 830 | cstring genExpr; |
28bf4b0b | 831 | |
616915dd | 832 | if (!c->post) |
833 | { | |
bb7c2085 | 834 | st = message ("Unable to resolve constraint:\n%q", constraint_printDeep (c)); |
616915dd | 835 | } |
836 | else | |
837 | { | |
bb7c2085 | 838 | st = message ("Block Post condition:\nThis function block has the post condition %q", constraint_printDeep (c)); |
616915dd | 839 | } |
9280addf | 840 | |
bb7c2085 | 841 | if (constraint_hasMaxSet (c)) |
03d670b6 | 842 | { |
bb7c2085 | 843 | temp = cstring_makeLiteral ("Possible out-of-bounds store:\n"); |
03d670b6 | 844 | } |
845 | else | |
846 | { | |
bb7c2085 | 847 | temp = cstring_makeLiteral ("Possible out-of-bounds read:\n"); |
03d670b6 | 848 | } |
03d670b6 | 849 | |
28bf4b0b | 850 | genExpr = exprNode_unparse (c->generatingExpr); |
7bf96067 | 851 | |
bb7c2085 | 852 | if (context_getFlag (FLG_CONSTRAINTLOCATION)) |
9280addf | 853 | { |
7bf96067 | 854 | cstring temp2; |
bb7c2085 | 855 | temp2 = message ("%s\n", genExpr); |
7bf96067 | 856 | temp = cstring_concatFree (temp, temp2); |
9280addf | 857 | } |
7bf96067 | 858 | |
bb7c2085 | 859 | st = cstring_concatFree (temp,st); |
7bf96067 | 860 | |
616915dd | 861 | return st; |
862 | } | |
863 | ||
d46ce6a4 | 864 | /*@only@*/ cstring constraint_print (constraint c) /*@*/ |
616915dd | 865 | { |
866 | cstring st = cstring_undefined; | |
867 | cstring type = cstring_undefined; | |
dc92450f | 868 | llassert (c !=NULL); |
616915dd | 869 | if (c->post) |
870 | { | |
bb7c2085 | 871 | if (context_getFlag (FLG_PARENCONSTRAINT)) |
a779b61e | 872 | { |
873 | type = cstring_makeLiteral ("ensures: "); | |
874 | } | |
875 | else | |
876 | { | |
877 | type = cstring_makeLiteral ("ensures"); | |
878 | } | |
616915dd | 879 | } |
880 | else | |
881 | { | |
bb7c2085 | 882 | if (context_getFlag (FLG_PARENCONSTRAINT)) |
a779b61e | 883 | { |
884 | type = cstring_makeLiteral ("requires: "); | |
885 | } | |
886 | else | |
887 | { | |
888 | type = cstring_makeLiteral ("requires"); | |
889 | } | |
890 | ||
616915dd | 891 | } |
bb7c2085 | 892 | if (context_getFlag (FLG_PARENCONSTRAINT)) |
a779b61e | 893 | { |
894 | st = message ("%q: %q %q %q", | |
895 | type, | |
896 | constraintExpr_print (c->lexpr), | |
bb7c2085 | 897 | arithType_print (c->ar), |
898 | constraintExpr_print (c->expr) | |
a779b61e | 899 | ); |
900 | } | |
901 | else | |
902 | { | |
903 | st = message ("%q %q %q %q", | |
904 | type, | |
905 | constraintExpr_print (c->lexpr), | |
bb7c2085 | 906 | arithType_print (c->ar), |
907 | constraintExpr_print (c->expr) | |
616915dd | 908 | ); |
a779b61e | 909 | } |
616915dd | 910 | return st; |
911 | } | |
912 | ||
90bc41f7 | 913 | cstring constraint_printOr (constraint c) /*@*/ |
914 | { | |
915 | cstring ret; | |
916 | constraint temp; | |
917 | ||
918 | ret = cstring_undefined; | |
919 | temp = c; | |
920 | ||
bb7c2085 | 921 | ret = cstring_concatFree (ret, constraint_print (temp)); |
90bc41f7 | 922 | |
923 | temp = temp->or; | |
924 | ||
bb7c2085 | 925 | while ( constraint_isDefined (temp)) |
90bc41f7 | 926 | { |
bb7c2085 | 927 | ret = cstring_concatFree (ret, cstring_makeLiteral (" OR ")); |
928 | ret = cstring_concatFree (ret, constraint_print (temp)); | |
90bc41f7 | 929 | temp = temp->or; |
930 | } | |
931 | ||
932 | return ret; | |
933 | ||
934 | } | |
935 | ||
dc92450f | 936 | /*@only@*/ constraint constraint_doSRefFixBaseParam (/*@returned@*/ /*@only@*/ constraint precondition, |
616915dd | 937 | exprNodeList arglist) |
938 | { | |
939 | precondition->lexpr = constraintExpr_doSRefFixBaseParam (precondition->lexpr, | |
940 | arglist); | |
941 | precondition->expr = constraintExpr_doSRefFixBaseParam (precondition->expr, | |
942 | arglist); | |
943 | ||
944 | return precondition; | |
945 | } | |
946 | ||
947 | ||
28bf4b0b | 948 | constraint constraint_doFixResult (constraint postcondition, /*@dependent@*/ exprNode fcnCall) |
616915dd | 949 | { |
950 | postcondition = constraint_copy (postcondition); | |
951 | postcondition->lexpr = constraintExpr_doFixResult (postcondition->lexpr, fcnCall); | |
952 | postcondition->expr = constraintExpr_doFixResult (postcondition->expr, fcnCall); | |
953 | ||
954 | return postcondition; | |
955 | } | |
86d93ed3 | 956 | /*Commenting out temporally |
957 | ||
958 | / *@only@* /constraint constraint_doSRefFixInvarConstraint(constraint invar, sRef s, ctype ct ) | |
959 | { | |
960 | ||
961 | invar = constraint_copy (invar); | |
962 | invar->lexpr = constraintExpr_doSRefFixInvarConstraint (invar->lexpr, s, ct); | |
963 | invar->expr = constraintExpr_doSRefFixInvarConstraint (invar->expr, s, ct); | |
964 | ||
965 | return invar; | |
966 | } | |
967 | */ | |
616915dd | 968 | |
d46ce6a4 | 969 | /*@only@*/ constraint constraint_doSRefFixConstraintParam (constraint precondition, |
616915dd | 970 | exprNodeList arglist) |
971 | { | |
972 | ||
973 | precondition = constraint_copy (precondition); | |
974 | precondition->lexpr = constraintExpr_doSRefFixConstraintParam (precondition->lexpr, arglist); | |
975 | precondition->expr = constraintExpr_doSRefFixConstraintParam (precondition->expr, arglist); | |
976 | ||
4ab867d6 | 977 | precondition->fcnPre = FALSE; |
616915dd | 978 | return precondition; |
979 | } | |
980 | ||
d46ce6a4 | 981 | constraint constraint_preserveOrig (/*@returned@*/ constraint c) /*@modifies c @*/ |
616915dd | 982 | { |
4ab867d6 | 983 | |
bb7c2085 | 984 | DPRINTF ((message ("Doing constraint_preserverOrig for %q ", constraint_printDetailed (c)))); |
4ab867d6 | 985 | |
d46ce6a4 | 986 | if (c->orig == constraint_undefined) |
987 | c->orig = constraint_copy (c); | |
4ab867d6 | 988 | |
989 | else if (c->orig->fcnPre) | |
990 | { | |
991 | constraint temp; | |
992 | ||
993 | temp = c->orig; | |
994 | ||
995 | /* avoid infinite loop */ | |
996 | c->orig = NULL; | |
997 | c->orig = constraint_copy (c); | |
998 | if (c->orig->orig == NULL) | |
920a3797 | 999 | { |
1000 | c->orig->orig = temp; | |
1001 | temp = NULL; | |
1002 | } | |
4ab867d6 | 1003 | else |
920a3797 | 1004 | { |
bb7c2085 | 1005 | llcontbug ((message ("Expected c->orig->orig to be null"))); |
1006 | constraint_free (c->orig->orig); | |
920a3797 | 1007 | c->orig->orig = temp; |
1008 | temp = NULL; | |
1009 | } | |
4ab867d6 | 1010 | } |
1011 | else | |
1012 | { | |
bb7c2085 | 1013 | DPRINTF ((message ("Not changing constraint"))); |
4ab867d6 | 1014 | } |
d46ce6a4 | 1015 | |
bb7c2085 | 1016 | DPRINTF ((message ("After Doing constraint_preserverOrig for %q ", constraint_printDetailed (c)))); |
4ab867d6 | 1017 | |
616915dd | 1018 | return c; |
1019 | } | |
1020 | /*@=fcnuse*/ | |
1021 | /*@=assignexpose*/ | |
1022 | /*@=czechfcns@*/ | |
84c9ffbf | 1023 | |
2934b455 | 1024 | |
84c9ffbf | 1025 | constraint constraint_togglePost (/*@returned@*/ constraint c) |
1026 | { | |
1027 | c->post = !c->post; | |
1028 | return c; | |
1029 | } | |
2934b455 | 1030 | |
1031 | constraint constraint_togglePostOrig (/*@returned@*/ constraint c) | |
1032 | { | |
1033 | if (c->orig != NULL) | |
bb7c2085 | 1034 | c->orig = constraint_togglePost (c->orig); |
2934b455 | 1035 | return c; |
1036 | } | |
1037 | ||
bb7c2085 | 1038 | bool constraint_hasOrig ( /*@observer@*/ /*@temp@*/ constraint c) |
2934b455 | 1039 | { |
1040 | if (c->orig == NULL) | |
1041 | return FALSE; | |
1042 | else | |
1043 | return TRUE; | |
1044 | } | |
920a3797 | 1045 | |
1046 | ||
1047 | constraint constraint_undump (FILE *f) | |
1048 | { | |
1049 | constraint c; | |
1050 | bool fcnPre; | |
1051 | bool post; | |
1052 | arithType ar; | |
1053 | ||
1054 | constraintExpr lexpr; | |
1055 | constraintExpr expr; | |
28bf4b0b | 1056 | |
920a3797 | 1057 | |
1058 | char * s; | |
1059 | ||
1060 | char *os; | |
1061 | ||
3be9a165 | 1062 | os = mstring_create (MAX_DUMP_LINE_LENGTH); |
920a3797 | 1063 | |
bb7c2085 | 1064 | s = fgets (os, MAX_DUMP_LINE_LENGTH, f); |
920a3797 | 1065 | |
1066 | /*@i33*/ /*this should probably be wrappered...*/ | |
1067 | ||
28bf4b0b | 1068 | fcnPre = (bool) reader_getInt (&s); |
bb7c2085 | 1069 | advanceField (&s); |
28bf4b0b | 1070 | post = (bool) reader_getInt (&s); |
bb7c2085 | 1071 | advanceField (&s); |
28bf4b0b | 1072 | ar = (arithType) reader_getInt (&s); |
920a3797 | 1073 | |
bb7c2085 | 1074 | s = fgets (os, MAX_DUMP_LINE_LENGTH, f); |
920a3797 | 1075 | |
28bf4b0b | 1076 | reader_checkChar (&s, 'l'); |
920a3797 | 1077 | |
1078 | lexpr = constraintExpr_undump (f); | |
1079 | ||
bb7c2085 | 1080 | s = fgets (os, MAX_DUMP_LINE_LENGTH, f); |
920a3797 | 1081 | |
28bf4b0b | 1082 | reader_checkChar (&s, 'r'); |
920a3797 | 1083 | expr = constraintExpr_undump (f); |
1084 | ||
bb7c2085 | 1085 | c = constraint_makeNew (); |
920a3797 | 1086 | |
1087 | c->fcnPre = fcnPre; | |
1088 | c->post = post; | |
1089 | c->ar = ar; | |
1090 | ||
1091 | c->lexpr = lexpr; | |
1092 | c->expr = expr; | |
1093 | ||
bb7c2085 | 1094 | free (os); |
1095 | c = constraint_preserveOrig (c); | |
920a3797 | 1096 | return c; |
1097 | } | |
1098 | ||
1099 | ||
1100 | void constraint_dump (/*@observer@*/ constraint c, FILE *f) | |
1101 | { | |
1102 | bool fcnPre; | |
1103 | bool post; | |
1104 | arithType ar; | |
1105 | ||
1106 | constraintExpr lexpr; | |
1107 | constraintExpr expr; | |
28bf4b0b | 1108 | |
920a3797 | 1109 | |
1110 | fcnPre = c->fcnPre; | |
1111 | post = c->post; | |
1112 | ar = c->ar; | |
1113 | lexpr = c->lexpr; | |
1114 | expr = c->expr; | |
1115 | ||
bb7c2085 | 1116 | fprintf (f, "%d@%d@%d\n", (int) fcnPre, (int) post, (int) ar); |
1117 | fprintf (f,"l\n"); | |
920a3797 | 1118 | constraintExpr_dump (lexpr, f); |
bb7c2085 | 1119 | fprintf (f,"r\n"); |
920a3797 | 1120 | constraintExpr_dump (expr, f); |
1121 | } | |
1122 | ||
1123 | ||
f4ec8018 | 1124 | int constraint_compare (/*@observer@*/ /*@temp@*/ const constraint * c1, /*@observer@*/ /*@temp@*/ const constraint * c2) /*@*/ |
02984642 | 1125 | { |
1126 | fileloc loc1, loc2; | |
1127 | ||
1128 | int ret; | |
1129 | ||
bb7c2085 | 1130 | llassert (constraint_isDefined (*c1)); |
1131 | llassert (constraint_isDefined (*c2)); | |
02984642 | 1132 | |
bb7c2085 | 1133 | if (constraint_isUndefined (*c1)) |
02984642 | 1134 | { |
bb7c2085 | 1135 | if (constraint_isUndefined (*c2)) |
02984642 | 1136 | return 0; |
1137 | else | |
1138 | return 1; | |
1139 | } | |
1140 | ||
bb7c2085 | 1141 | if (constraint_isUndefined (*c2)) |
02984642 | 1142 | { |
1143 | return -1; | |
1144 | } | |
1145 | ||
bb7c2085 | 1146 | loc1 = constraint_getFileloc (*c1); |
1147 | loc2 = constraint_getFileloc (*c2); | |
02984642 | 1148 | |
bb7c2085 | 1149 | ret = fileloc_compare (loc1, loc2); |
02984642 | 1150 | |
bb7c2085 | 1151 | fileloc_free (loc1); |
1152 | fileloc_free (loc2); | |
02984642 | 1153 | |
1154 | return ret; | |
1155 | } | |
1156 | ||
1157 | ||
84380658 | 1158 | bool constraint_isPost (/*@observer@*/ /*@temp@*/ constraint c) |
1159 | { | |
bb7c2085 | 1160 | llassert (constraint_isDefined (c)); |
84380658 | 1161 | |
bb7c2085 | 1162 | if (constraint_isUndefined (c)) |
84380658 | 1163 | return FALSE; |
1164 | ||
1165 | return (c->post); | |
1166 | } | |
a779b61e | 1167 | |
1168 | ||
bb7c2085 | 1169 | static int constraint_getDepth (/*@observer@*/ /*@temp@*/ constraint c) |
a779b61e | 1170 | { |
1171 | int l , r; | |
1172 | ||
bb7c2085 | 1173 | l = constraintExpr_getDepth (c->lexpr); |
1174 | r = constraintExpr_getDepth (c->expr); | |
a779b61e | 1175 | |
1176 | if (l > r) | |
1177 | { | |
bb7c2085 | 1178 | DPRINTF (( message ("constraint depth returning %d for %s", l, constraint_print (c)))); |
a779b61e | 1179 | return l; |
1180 | } | |
1181 | else | |
1182 | { | |
bb7c2085 | 1183 | DPRINTF (( message ("constraint depth returning %d for %s", r, constraint_print (c)))); |
a779b61e | 1184 | return r; |
1185 | } | |
1186 | } | |
1187 | ||
1188 | ||
1189 | bool constraint_tooDeep (/*@observer@*/ /*@temp@*/ constraint c) | |
1190 | { | |
1191 | int temp; | |
1192 | ||
bb7c2085 | 1193 | temp = constraint_getDepth (c); |
a779b61e | 1194 | |
bb7c2085 | 1195 | if (temp >= 20) |
a779b61e | 1196 | { |
1197 | return TRUE; | |
1198 | } | |
1199 | ||
1200 | return FALSE; | |
1201 | ||
1202 | } |