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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 | |
393e573f | 42 | /*@access exprNode@*/ /* !!! NO! Don't do this recklessly! */ |
43 | /*@-nullderef@*/ /* !!! DRL needs to fix this code! */ | |
44 | /*@-nullstate@*/ /* !!! DRL needs to fix this code! */ | |
45 | /*@-temptrans@*/ /* !!! DRL needs to fix this code! */ | |
d46ce6a4 | 46 | |
28bf4b0b | 47 | static /*@only@*/ cstring constraint_printDetailedPostCondition (/*@observer@*/ /*@temp@*/ constraint p_c); |
2934b455 | 48 | |
49 | ||
ccf0a4a8 | 50 | static /*@notnull@*/ /*@special@*/ constraint constraint_makeNew (void) |
51 | /*@post:isnull result->or, result->orig, result->generatingExpr, result->fcnPre @*/ | |
52 | /*@defines result->or, result->generatingExpr, result->orig, result->fcnPre @*/; | |
4ab867d6 | 53 | |
920a3797 | 54 | static void |
55 | advanceField (char **s) | |
56 | { | |
28bf4b0b | 57 | reader_checkChar (s, '@'); |
920a3797 | 58 | } |
59 | ||
15b3d2b2 | 60 | # if 0 |
28bf4b0b | 61 | static constraint makeConstraintParse2 (constraintExpr l, lltok relOp, exprNode cconstant) |
616915dd | 62 | { |
63 | char *t; | |
64 | int c; | |
65 | constraint ret; | |
ccf0a4a8 | 66 | ret = constraint_makeNew (); |
bb7c2085 | 67 | llassert (constraintExpr_isDefined (l)); |
d46ce6a4 | 68 | |
616915dd | 69 | ret->lexpr = constraintExpr_copy (l); |
2934b455 | 70 | |
616915dd | 71 | |
72 | if (relOp.tok == GE_OP) | |
73 | ret->ar = GTE; | |
74 | else if (relOp.tok == LE_OP) | |
75 | ret->ar = LTE; | |
76 | else if (relOp.tok == EQ_OP) | |
77 | ret->ar = EQ; | |
78 | else | |
bb7c2085 | 79 | llfatalbug (message ("Unsupported relational operator")); |
616915dd | 80 | |
81 | ||
bb7c2085 | 82 | t = cstring_toCharsSafe (exprNode_unparse (cconstant)); |
83 | c = atoi ( t); | |
616915dd | 84 | ret->expr = constraintExpr_makeIntLiteral (c); |
85 | ||
86 | ret->post = TRUE; | |
bb7c2085 | 87 | DPRINTF (("GENERATED CONSTRAINT:")); |
88 | DPRINTF ((message ("%s", constraint_print (ret)))); | |
616915dd | 89 | return ret; |
90 | } | |
15b3d2b2 | 91 | # endif |
616915dd | 92 | |
c3e695ff | 93 | bool constraint_same (constraint c1, constraint c2) |
90bc41f7 | 94 | { |
15b3d2b2 | 95 | llassert (c1 != NULL); |
96 | llassert (c2 != NULL); | |
90bc41f7 | 97 | |
15b3d2b2 | 98 | if (c1->ar != c2->ar) |
99 | { | |
100 | return FALSE; | |
101 | } | |
102 | ||
bb7c2085 | 103 | if (!constraintExpr_similar (c1->lexpr, c2->lexpr)) |
15b3d2b2 | 104 | { |
105 | return FALSE; | |
106 | } | |
90bc41f7 | 107 | |
bb7c2085 | 108 | if (!constraintExpr_similar (c1->expr, c2->expr)) |
15b3d2b2 | 109 | { |
110 | return FALSE; | |
111 | } | |
90bc41f7 | 112 | |
113 | return TRUE; | |
114 | } | |
616915dd | 115 | |
116 | constraint makeConstraintParse3 (constraintExpr l, lltok relOp, constraintExpr r) | |
117 | { | |
118 | constraint ret; | |
bb7c2085 | 119 | ret = constraint_makeNew (); |
120 | llassert (constraintExpr_isDefined (l)); | |
616915dd | 121 | |
122 | ret->lexpr = constraintExpr_copy (l); | |
616915dd | 123 | |
80489f0a | 124 | if (lltok_getTok (relOp) == GE_OP) |
125 | { | |
616915dd | 126 | ret->ar = GTE; |
80489f0a | 127 | } |
128 | else if (lltok_getTok (relOp) == LE_OP) | |
129 | { | |
130 | ret->ar = LTE; | |
131 | } | |
132 | else if (lltok_getTok (relOp) == EQ_OP) | |
133 | { | |
134 | ret->ar = EQ; | |
135 | } | |
616915dd | 136 | else |
80489f0a | 137 | llfatalbug ( message ("Unsupported relational operator")); |
616915dd | 138 | |
139 | ret->expr = constraintExpr_copy (r); | |
140 | ||
141 | ret->post = TRUE; | |
90bc41f7 | 142 | |
bb7c2085 | 143 | ret->orig = constraint_copy (ret); |
90bc41f7 | 144 | |
145 | ret = constraint_simplify (ret); | |
b7b694d6 | 146 | /* ret->orig = ret; */ |
147 | ||
bb7c2085 | 148 | DPRINTF (("GENERATED CONSTRAINT:")); |
149 | DPRINTF ((message ("%s", constraint_print (ret)))); | |
616915dd | 150 | return ret; |
151 | } | |
152 | ||
28bf4b0b | 153 | constraint constraint_copy (/*@temp@*/ /*@observer@*/ constraint c) |
616915dd | 154 | { |
155 | constraint ret; | |
90bc41f7 | 156 | |
bb7c2085 | 157 | llassert (constraint_isDefined (c)); |
b7b694d6 | 158 | |
bb7c2085 | 159 | ret = constraint_makeNew (); |
616915dd | 160 | ret->lexpr = constraintExpr_copy (c->lexpr); |
161 | ret->ar = c->ar; | |
162 | ret->expr = constraintExpr_copy (c->expr); | |
163 | ret->post = c->post; | |
795e7f34 | 164 | /*@-assignexpose@*/ |
28bf4b0b | 165 | ret->generatingExpr = c->generatingExpr; |
795e7f34 | 166 | /*@=assignexpose@*/ |
9280addf | 167 | |
616915dd | 168 | /*@i33 fix this*/ |
169 | if (c->orig != NULL) | |
170 | ret->orig = constraint_copy (c->orig); | |
171 | else | |
172 | ret->orig = NULL; | |
90bc41f7 | 173 | |
174 | if (c->or != NULL) | |
175 | ret->or = constraint_copy (c->or); | |
176 | else | |
177 | ret->or = NULL; | |
4ab867d6 | 178 | |
179 | ret->fcnPre = c->fcnPre; | |
90bc41f7 | 180 | |
616915dd | 181 | return ret; |
182 | } | |
183 | ||
184 | /*like copy expect it doesn't allocate memory for the constraint*/ | |
185 | ||
d46ce6a4 | 186 | void constraint_overWrite (constraint c1, constraint c2) |
616915dd | 187 | { |
bb7c2085 | 188 | llassert (constraint_isDefined (c1)); |
d46ce6a4 | 189 | |
190 | llassert (c1 != c2); | |
191 | ||
bb7c2085 | 192 | DPRINTF ((message ("OverWriteing constraint %q with %q", constraint_print (c1), |
193 | constraint_print (c2)))); | |
d46ce6a4 | 194 | |
bb7c2085 | 195 | constraintExpr_free (c1->lexpr); |
196 | constraintExpr_free (c1->expr); | |
d46ce6a4 | 197 | |
616915dd | 198 | c1->lexpr = constraintExpr_copy (c2->lexpr); |
199 | c1->ar = c2->ar; | |
200 | c1->expr = constraintExpr_copy (c2->expr); | |
201 | c1->post = c2->post; | |
d46ce6a4 | 202 | |
203 | if (c1->orig != NULL) | |
204 | constraint_free (c1->orig); | |
205 | ||
616915dd | 206 | if (c2->orig != NULL) |
207 | c1->orig = constraint_copy (c2->orig); | |
208 | else | |
209 | c1->orig = NULL; | |
90bc41f7 | 210 | |
d46ce6a4 | 211 | /*@i33 make sure that the or is freed correctly*/ |
212 | if (c1->or != NULL) | |
213 | constraint_free (c1->or); | |
214 | ||
90bc41f7 | 215 | if (c2->or != NULL) |
216 | c1->or = constraint_copy (c2->or); | |
217 | else | |
218 | c1->or = NULL; | |
4ab867d6 | 219 | |
220 | c1->fcnPre = c2->fcnPre; | |
795e7f34 | 221 | |
222 | /*@-assignexpose@*/ | |
4ab867d6 | 223 | c1->generatingExpr = c2->generatingExpr; |
795e7f34 | 224 | /*@=assignexpose@*/ |
616915dd | 225 | } |
226 | ||
616915dd | 227 | |
228 | ||
d46ce6a4 | 229 | static /*@notnull@*/ /*@special@*/ constraint constraint_makeNew (void) |
ccf0a4a8 | 230 | /*@post:isnull result->or, result->orig, result->generatingExpr, result->fcnPre @*/ |
231 | /*@defines result->or, result->generatingExpr, result->orig, result->fcnPre @*/ | |
616915dd | 232 | { |
233 | constraint ret; | |
bb7c2085 | 234 | ret = dmalloc (sizeof (*ret)); |
616915dd | 235 | ret->lexpr = NULL; |
236 | ret->expr = NULL; | |
237 | ret->ar = LT; | |
238 | ret->post = FALSE; | |
239 | ret->orig = NULL; | |
90bc41f7 | 240 | ret->or = NULL; |
9280addf | 241 | ret->generatingExpr = NULL; |
4ab867d6 | 242 | ret->fcnPre = NULL; |
dc92450f | 243 | return ret; |
616915dd | 244 | } |
245 | ||
b37cf05e | 246 | constraint constraint_addGeneratingExpr (/*@returned@*/ constraint c, /*@exposed@*/ exprNode e) |
9280addf | 247 | { |
248 | ||
249 | if (c->generatingExpr == NULL) | |
250 | { | |
28bf4b0b | 251 | c->generatingExpr = e; |
bb7c2085 | 252 | DPRINTF ((message ("setting generatingExpr for %s to %s", constraint_print (c), exprNode_unparse (e)) )); |
9280addf | 253 | } |
254 | else | |
255 | { | |
bb7c2085 | 256 | DPRINTF ((message ("Not setting generatingExpr for %s to %s", constraint_print (c), exprNode_unparse (e)) )); |
9280addf | 257 | } |
258 | return c; | |
259 | } | |
260 | ||
4ab867d6 | 261 | constraint constraint_origAddGeneratingExpr (/*@returned@*/ constraint c, exprNode e) |
262 | { | |
263 | ||
264 | if (c->orig != constraint_undefined) | |
265 | { | |
bb7c2085 | 266 | c->orig = constraint_addGeneratingExpr (c->orig, e); |
4ab867d6 | 267 | } |
268 | else | |
269 | { | |
bb7c2085 | 270 | DPRINTF ((message ("constraint_origAddGeneratingExpr: Not setting generatingExpr for %s to %s", constraint_print (c), exprNode_unparse (e)) )); |
4ab867d6 | 271 | } |
272 | return c; | |
273 | } | |
274 | ||
bb7c2085 | 275 | constraint constraint_setFcnPre (/*@returned@*/ constraint c) |
4ab867d6 | 276 | { |
277 | ||
278 | if (c->orig != constraint_undefined) | |
279 | { | |
280 | c->orig->fcnPre = TRUE; | |
281 | } | |
282 | else | |
283 | { | |
284 | c->fcnPre = TRUE; | |
bb7c2085 | 285 | DPRINTF (( message ("Warning Setting fcnPre directly"))); |
4ab867d6 | 286 | } |
287 | return c; | |
288 | } | |
289 | ||
290 | ||
291 | ||
292 | ||
616915dd | 293 | fileloc constraint_getFileloc (constraint c) |
294 | { | |
bb7c2085 | 295 | if (exprNode_isDefined (c->generatingExpr)) |
296 | return (fileloc_copy (exprNode_getfileloc (c->generatingExpr))); | |
9280addf | 297 | |
bb7c2085 | 298 | return (constraintExpr_getFileloc (c->lexpr)); |
616915dd | 299 | |
300 | ||
301 | } | |
302 | ||
9280addf | 303 | static bool checkForMaxSet (constraint c) |
304 | { | |
bb7c2085 | 305 | if (constraintExpr_hasMaxSet (c->lexpr) || constraintExpr_hasMaxSet (c->expr)) |
9280addf | 306 | return TRUE; |
307 | ||
308 | return FALSE; | |
309 | } | |
310 | ||
bb7c2085 | 311 | bool constraint_hasMaxSet (constraint c) |
9280addf | 312 | { |
bb7c2085 | 313 | if (checkForMaxSet (c)) |
03d670b6 | 314 | return TRUE; |
315 | ||
dc92450f | 316 | if (c->orig != NULL) |
9280addf | 317 | { |
bb7c2085 | 318 | if (checkForMaxSet (c->orig)) |
9280addf | 319 | return TRUE; |
320 | } | |
321 | ||
03d670b6 | 322 | return FALSE; |
9280addf | 323 | } |
324 | ||
abd7f895 | 325 | constraint constraint_makeReadSafeExprNode (exprNode po, exprNode ind) |
616915dd | 326 | { |
bb7c2085 | 327 | constraint ret = constraint_makeNew (); |
b7b694d6 | 328 | |
28bf4b0b | 329 | po = po; |
330 | ind = ind; | |
bb7c2085 | 331 | ret->lexpr = constraintExpr_makeMaxReadExpr (po); |
616915dd | 332 | ret->ar = GTE; |
333 | ret->expr = constraintExpr_makeValueExpr (ind); | |
d46ce6a4 | 334 | ret->post = FALSE; |
616915dd | 335 | return ret; |
336 | } | |
337 | ||
28bf4b0b | 338 | constraint constraint_makeWriteSafeInt ( exprNode po, int ind) |
616915dd | 339 | { |
bb7c2085 | 340 | constraint ret = constraint_makeNew (); |
616915dd | 341 | |
342 | ||
bb7c2085 | 343 | ret->lexpr =constraintExpr_makeMaxSetExpr (po); |
616915dd | 344 | ret->ar = GTE; |
c3e695ff | 345 | ret->expr = constraintExpr_makeIntLiteral (ind); |
616915dd | 346 | /*@i1*/return ret; |
347 | } | |
348 | ||
84c9ffbf | 349 | constraint constraint_makeSRefSetBufferSize (sRef s, long int size) |
616915dd | 350 | { |
bb7c2085 | 351 | constraint ret = constraint_makeNew (); |
4ab867d6 | 352 | ret->lexpr = constraintExpr_makeSRefMaxset (s); |
616915dd | 353 | ret->ar = EQ; |
84c9ffbf | 354 | ret->expr = constraintExpr_makeIntLiteral ((int)size); |
616915dd | 355 | ret->post = TRUE; |
356 | /*@i1*/return ret; | |
357 | } | |
358 | ||
359 | constraint constraint_makeSRefWriteSafeInt (sRef s, int ind) | |
360 | { | |
bb7c2085 | 361 | constraint ret = constraint_makeNew (); |
616915dd | 362 | |
363 | ||
bb7c2085 | 364 | ret->lexpr = constraintExpr_makeSRefMaxset ( s); |
616915dd | 365 | ret->ar = GTE; |
c3e695ff | 366 | ret->expr = constraintExpr_makeIntLiteral (ind); |
616915dd | 367 | ret->post = TRUE; |
368 | /*@i1*/return ret; | |
369 | } | |
370 | ||
371 | /* drl added 01/12/2000 | |
372 | ||
bb7c2085 | 373 | makes the constraint: Ensures index <= MaxRead (buffer) */ |
616915dd | 374 | |
bb7c2085 | 375 | constraint constraint_makeEnsureLteMaxRead (exprNode index, exprNode buffer) |
616915dd | 376 | { |
bb7c2085 | 377 | constraint ret = constraint_makeNew (); |
616915dd | 378 | |
379 | ret->lexpr = constraintExpr_makeValueExpr (index); | |
380 | ret->ar = LTE; | |
bb7c2085 | 381 | ret->expr = constraintExpr_makeMaxReadExpr (buffer); |
616915dd | 382 | ret->post = TRUE; |
383 | return ret; | |
384 | } | |
385 | ||
386 | constraint constraint_makeWriteSafeExprNode (exprNode po, exprNode ind) | |
387 | { | |
bb7c2085 | 388 | constraint ret = constraint_makeNew (); |
616915dd | 389 | |
390 | ||
bb7c2085 | 391 | ret->lexpr =constraintExpr_makeMaxSetExpr (po); |
616915dd | 392 | ret->ar = GTE; |
393 | ret->expr = constraintExpr_makeValueExpr (ind); | |
394 | /*@i1*/return ret; | |
395 | } | |
396 | ||
397 | ||
28bf4b0b | 398 | constraint constraint_makeReadSafeInt ( exprNode t1, int index) |
616915dd | 399 | { |
bb7c2085 | 400 | constraint ret = constraint_makeNew (); |
616915dd | 401 | |
bb7c2085 | 402 | ret->lexpr = constraintExpr_makeMaxReadExpr (t1); |
616915dd | 403 | ret->ar = GTE; |
28bf4b0b | 404 | ret->expr = constraintExpr_makeIntLiteral (index); |
d46ce6a4 | 405 | ret->post = FALSE; |
616915dd | 406 | return ret; |
407 | } | |
408 | ||
470b7798 | 409 | constraint constraint_makeSRefReadSafeInt (sRef s, int ind) |
410 | { | |
bb7c2085 | 411 | constraint ret = constraint_makeNew (); |
470b7798 | 412 | |
413 | ||
bb7c2085 | 414 | ret->lexpr = constraintExpr_makeSRefMaxRead (s); |
470b7798 | 415 | ret->ar = GTE; |
c3e695ff | 416 | ret->expr = constraintExpr_makeIntLiteral (ind); |
470b7798 | 417 | ret->post = TRUE; |
418 | /*@i1*/return ret; | |
419 | } | |
420 | ||
28bf4b0b | 421 | constraint constraint_makeEnsureMaxReadAtLeast (exprNode t1, exprNode t2, fileloc sequencePoint) |
616915dd | 422 | { |
d46ce6a4 | 423 | constraint ret; |
616915dd | 424 | |
bb7c2085 | 425 | ret = constraint_makeReadSafeExprNode (t1, t2); |
b7b694d6 | 426 | ret->lexpr = constraintExpr_setFileloc (ret->lexpr, sequencePoint); |
616915dd | 427 | ret->post = TRUE; |
428 | ||
616915dd | 429 | return ret; |
430 | } | |
431 | ||
d46ce6a4 | 432 | static constraint constraint_makeEnsuresOpConstraintExpr (/*@only@*/ constraintExpr c1, /*@only@*/ constraintExpr c2, fileloc sequencePoint, arithType ar) |
470b7798 | 433 | { |
434 | ||
435 | constraint ret; | |
436 | ||
bb7c2085 | 437 | llassert (constraintExpr_isDefined (c1) && constraintExpr_isDefined (c2)); |
470b7798 | 438 | |
bb7c2085 | 439 | ret = constraint_makeNew (); |
470b7798 | 440 | |
441 | ret->lexpr = c1; | |
442 | ret->ar = ar; | |
443 | ret->post = TRUE; | |
444 | ret->expr = c2; | |
445 | ret->lexpr = constraintExpr_setFileloc (ret->lexpr, sequencePoint); | |
446 | return ret; | |
447 | } | |
616915dd | 448 | |
28bf4b0b | 449 | static constraint constraint_makeEnsuresOp (/*@dependent@*/ exprNode e1, /*@dependent@*/ exprNode e2, fileloc sequencePoint, arithType ar) |
616915dd | 450 | { |
470b7798 | 451 | constraintExpr c1, c2; |
452 | constraint ret; | |
616915dd | 453 | exprNode e; |
470b7798 | 454 | |
bb7c2085 | 455 | if (! (exprNode_isDefined (e1) && exprNode_isDefined (e2))) |
616915dd | 456 | { |
bb7c2085 | 457 | llcontbug ((message ("null exprNode, Exprnodes are %s and %s", |
458 | exprNode_unparse (e1), exprNode_unparse (e2)) | |
459 | )); | |
616915dd | 460 | } |
470b7798 | 461 | |
28bf4b0b | 462 | e = e1; |
470b7798 | 463 | c1 = constraintExpr_makeValueExpr (e); |
464 | ||
28bf4b0b | 465 | e = e2; |
470b7798 | 466 | c2 = constraintExpr_makeValueExpr (e); |
467 | ||
468 | ret = constraint_makeEnsuresOpConstraintExpr (c1, c2, sequencePoint, ar); | |
616915dd | 469 | |
616915dd | 470 | return ret; |
471 | } | |
472 | ||
473 | ||
474 | /* make constraint ensures e1 == e2 */ | |
475 | ||
476 | constraint constraint_makeEnsureEqual (exprNode e1, exprNode e2, fileloc sequencePoint) | |
477 | { | |
bb7c2085 | 478 | return ( constraint_makeEnsuresOp (e1, e2, sequencePoint, EQ)); |
616915dd | 479 | } |
480 | ||
481 | /*make constraint ensures e1 < e2 */ | |
482 | constraint constraint_makeEnsureLessThan (exprNode e1, exprNode e2, fileloc sequencePoint) | |
483 | { | |
470b7798 | 484 | constraintExpr t1, t2; |
d9daf826 | 485 | constraint t3; |
470b7798 | 486 | |
487 | t1 = constraintExpr_makeValueExpr (e1); | |
488 | t2 = constraintExpr_makeValueExpr (e2); | |
489 | ||
490 | /*change this to e1 <= (e2 -1) */ | |
491 | ||
492 | t2 = constraintExpr_makeDecConstraintExpr (t2); | |
d9daf826 | 493 | |
494 | t3 = constraint_makeEnsuresOpConstraintExpr (t1, t2, sequencePoint, LTE); | |
495 | ||
496 | t3 = constraint_simplify(t3); | |
497 | return (t3); | |
616915dd | 498 | } |
499 | ||
500 | constraint constraint_makeEnsureLessThanEqual (exprNode e1, exprNode e2, fileloc sequencePoint) | |
501 | { | |
bb7c2085 | 502 | return ( constraint_makeEnsuresOp (e1, e2, sequencePoint, LTE)); |
616915dd | 503 | } |
504 | ||
505 | constraint constraint_makeEnsureGreaterThan (exprNode e1, exprNode e2, fileloc sequencePoint) | |
506 | { | |
470b7798 | 507 | constraintExpr t1, t2; |
d9daf826 | 508 | constraint t3; |
470b7798 | 509 | |
510 | t1 = constraintExpr_makeValueExpr (e1); | |
511 | t2 = constraintExpr_makeValueExpr (e2); | |
512 | ||
513 | ||
514 | /* change this to e1 >= (e2 + 1) */ | |
515 | t2 = constraintExpr_makeIncConstraintExpr (t2); | |
516 | ||
d9daf826 | 517 | t3 = constraint_makeEnsuresOpConstraintExpr (t1, t2, sequencePoint, GTE); |
518 | ||
519 | t3 = constraint_simplify(t3); | |
470b7798 | 520 | |
d9daf826 | 521 | return t3; |
616915dd | 522 | } |
523 | ||
524 | constraint constraint_makeEnsureGreaterThanEqual (exprNode e1, exprNode e2, fileloc sequencePoint) | |
525 | { | |
bb7c2085 | 526 | return ( constraint_makeEnsuresOp (e1, e2, sequencePoint, GTE)); |
616915dd | 527 | } |
528 | ||
529 | ||
530 | exprNode exprNode_copyConstraints (/*@returned@*/ exprNode dst, exprNode src) | |
531 | { | |
bb7c2085 | 532 | constraintList_free (dst->ensuresConstraints); |
533 | constraintList_free (dst->requiresConstraints); | |
534 | constraintList_free (dst->trueEnsuresConstraints); | |
535 | constraintList_free (dst->falseEnsuresConstraints); | |
d46ce6a4 | 536 | |
bb7c2085 | 537 | dst->ensuresConstraints = constraintList_copy (src->ensuresConstraints); |
538 | dst->requiresConstraints = constraintList_copy (src->requiresConstraints); | |
539 | dst->trueEnsuresConstraints = constraintList_copy (src->trueEnsuresConstraints); | |
540 | dst->falseEnsuresConstraints = constraintList_copy (src->falseEnsuresConstraints); | |
616915dd | 541 | return dst; |
542 | } | |
543 | ||
2934b455 | 544 | /* Makes the constraint e = e + f */ |
545 | constraint constraint_makeAddAssign (exprNode e, exprNode f, fileloc sequencePoint) | |
546 | { | |
547 | constraintExpr x1, x2, y; | |
548 | constraint ret; | |
549 | ||
bb7c2085 | 550 | ret = constraint_makeNew (); |
2934b455 | 551 | |
552 | x1 = constraintExpr_makeValueExpr (e); | |
bb7c2085 | 553 | x2 = constraintExpr_copy (x1); |
2934b455 | 554 | y = constraintExpr_makeValueExpr (f); |
555 | ||
556 | ret->lexpr = x1; | |
557 | ret->ar = EQ; | |
558 | ret->post = TRUE; | |
559 | ret->expr = constraintExpr_makeAddExpr (x2, y); | |
560 | ||
561 | ret->lexpr = constraintExpr_setFileloc (ret->lexpr, sequencePoint); | |
562 | ||
563 | return ret; | |
564 | } | |
565 | ||
566 | ||
567 | /* Makes the constraint e = e - f */ | |
568 | constraint constraint_makeSubtractAssign (exprNode e, exprNode f, fileloc sequencePoint) | |
569 | { | |
570 | constraintExpr x1, x2, y; | |
571 | constraint ret; | |
572 | ||
bb7c2085 | 573 | ret = constraint_makeNew (); |
2934b455 | 574 | |
575 | x1 = constraintExpr_makeValueExpr (e); | |
bb7c2085 | 576 | x2 = constraintExpr_copy (x1); |
2934b455 | 577 | y = constraintExpr_makeValueExpr (f); |
578 | ||
579 | ret->lexpr = x1; | |
580 | ret->ar = EQ; | |
581 | ret->post = TRUE; | |
582 | ret->expr = constraintExpr_makeSubtractExpr (x2, y); | |
583 | ||
584 | ret->lexpr = constraintExpr_setFileloc (ret->lexpr, sequencePoint); | |
585 | ||
586 | return ret; | |
587 | } | |
588 | ||
616915dd | 589 | constraint constraint_makeMaxSetSideEffectPostDecrement (exprNode e, fileloc sequencePoint) |
590 | { | |
bb7c2085 | 591 | constraint ret = constraint_makeNew (); |
616915dd | 592 | |
616915dd | 593 | ret->lexpr = constraintExpr_makeValueExpr (e); |
594 | ret->ar = EQ; | |
595 | ret->post = TRUE; | |
596 | ret->expr = constraintExpr_makeValueExpr (e); | |
597 | ret->expr = constraintExpr_makeDecConstraintExpr (ret->expr); | |
616915dd | 598 | ret->lexpr = constraintExpr_setFileloc (ret->lexpr, sequencePoint); |
616915dd | 599 | return ret; |
600 | } | |
601 | constraint constraint_makeMaxSetSideEffectPostIncrement (exprNode e, fileloc sequencePoint) | |
602 | { | |
bb7c2085 | 603 | constraint ret = constraint_makeNew (); |
616915dd | 604 | |
616915dd | 605 | ret->lexpr = constraintExpr_makeValueExpr (e); |
606 | ret->ar = EQ; | |
607 | ret->post = TRUE; | |
608 | ret->expr = constraintExpr_makeValueExpr (e); | |
609 | ret->expr = constraintExpr_makeIncConstraintExpr (ret->expr); | |
610 | ||
611 | ret->lexpr = constraintExpr_setFileloc (ret->lexpr, sequencePoint); | |
616915dd | 612 | return ret; |
613 | } | |
614 | ||
615 | ||
920a3797 | 616 | void constraint_free (/*@only@*/ constraint c) |
d46ce6a4 | 617 | { |
bb7c2085 | 618 | llassert (constraint_isDefined (c)); |
d46ce6a4 | 619 | |
620 | ||
bb7c2085 | 621 | if (constraint_isDefined (c->orig)) |
d46ce6a4 | 622 | constraint_free (c->orig); |
bb7c2085 | 623 | if ( constraint_isDefined (c->or)) |
d46ce6a4 | 624 | constraint_free (c->or); |
625 | ||
bb25bea6 | 626 | |
bb7c2085 | 627 | constraintExpr_free (c->lexpr); |
628 | constraintExpr_free (c->expr); | |
bb25bea6 | 629 | |
630 | c->orig = NULL; | |
631 | c->or = NULL; | |
632 | c->lexpr = NULL; | |
633 | c->expr = NULL; | |
634 | ||
d46ce6a4 | 635 | free (c); |
636 | ||
637 | } | |
638 | ||
dc92450f | 639 | cstring arithType_print (arithType ar) /*@*/ |
616915dd | 640 | { |
641 | cstring st = cstring_undefined; | |
642 | switch (ar) | |
643 | { | |
644 | case LT: | |
a779b61e | 645 | st = cstring_makeLiteral ("<"); |
616915dd | 646 | break; |
647 | case LTE: | |
a779b61e | 648 | st = cstring_makeLiteral ("<="); |
616915dd | 649 | break; |
650 | case GT: | |
a779b61e | 651 | st = cstring_makeLiteral (">"); |
616915dd | 652 | break; |
653 | case GTE: | |
a779b61e | 654 | st = cstring_makeLiteral (">="); |
616915dd | 655 | break; |
656 | case EQ: | |
a779b61e | 657 | st = cstring_makeLiteral ("=="); |
616915dd | 658 | break; |
659 | case NONNEGATIVE: | |
a779b61e | 660 | st = cstring_makeLiteral ("NONNEGATIVE"); |
616915dd | 661 | break; |
662 | case POSITIVE: | |
a779b61e | 663 | st = cstring_makeLiteral ("POSITIVE"); |
616915dd | 664 | break; |
665 | default: | |
bb7c2085 | 666 | llassert (FALSE); |
616915dd | 667 | break; |
668 | } | |
669 | return st; | |
670 | } | |
671 | ||
8f299805 | 672 | void constraint_printErrorPostCondition (constraint c, fileloc loc) |
673 | { | |
674 | cstring string; | |
675 | fileloc errorLoc, temp; | |
676 | ||
677 | string = constraint_printDetailedPostCondition (c); | |
678 | ||
679 | errorLoc = loc; | |
680 | ||
681 | loc = NULL; | |
682 | ||
bb7c2085 | 683 | temp = constraint_getFileloc (c); |
8f299805 | 684 | |
9276a168 | 685 | |
686 | if (context_getFlag (FLG_BOUNDSCOMPACTERRORMESSAGES ) ) | |
687 | { | |
688 | string = cstring_replaceChar(string, '\n', ' '); | |
689 | } | |
690 | ||
bb7c2085 | 691 | if (fileloc_isDefined (temp)) |
8f299805 | 692 | { |
693 | errorLoc = temp; | |
694 | voptgenerror ( FLG_CHECKPOST, string, errorLoc); | |
bb7c2085 | 695 | fileloc_free (temp); |
8f299805 | 696 | } |
697 | else | |
698 | { | |
699 | voptgenerror ( FLG_CHECKPOST, string, errorLoc); | |
700 | } | |
701 | } | |
702 | ||
f4ec8018 | 703 | /*drl added 8-11-001*/ |
704 | cstring constraint_printLocation (/*@observer@*/ /*@temp@*/ constraint c) /*@*/ | |
705 | { | |
706 | cstring string, ret; | |
707 | fileloc errorLoc; | |
708 | ||
bb7c2085 | 709 | string = constraint_print (c); |
f4ec8018 | 710 | |
bb7c2085 | 711 | errorLoc = constraint_getFileloc (c); |
f4ec8018 | 712 | |
bb7c2085 | 713 | ret = message ("constraint: %q @ %q", string, fileloc_unparse (errorLoc)); |
f4ec8018 | 714 | |
bb7c2085 | 715 | fileloc_free (errorLoc); |
f4ec8018 | 716 | return ret; |
717 | ||
718 | } | |
8f299805 | 719 | |
720 | ||
721 | ||
616915dd | 722 | void constraint_printError (constraint c, fileloc loc) |
723 | { | |
724 | cstring string; | |
4ab867d6 | 725 | fileloc errorLoc, temp; |
e5f31c00 | 726 | |
727 | ||
728 | /*drl 11/26/2001 avoid printing tautological constraints */ | |
bb7c2085 | 729 | if (constraint_isAlwaysTrue (c)) |
e5f31c00 | 730 | { |
731 | return; | |
732 | } | |
733 | ||
734 | ||
616915dd | 735 | string = constraint_printDetailed (c); |
9280addf | 736 | |
737 | errorLoc = loc; | |
738 | ||
bb7c2085 | 739 | temp = constraint_getFileloc (c); |
4ab867d6 | 740 | |
bb7c2085 | 741 | if (fileloc_isDefined (temp)) |
616915dd | 742 | { |
4ab867d6 | 743 | errorLoc = temp; |
84380658 | 744 | } |
745 | else | |
746 | { | |
bb7c2085 | 747 | llassert (FALSE); |
748 | DPRINTF (("constraint %s had undefined fileloc %s", constraint_print (c), fileloc_unparse (temp))); | |
749 | fileloc_free (temp); | |
750 | errorLoc = fileloc_copy (errorLoc); | |
84380658 | 751 | } |
9276a168 | 752 | |
753 | ||
754 | if (context_getFlag (FLG_BOUNDSCOMPACTERRORMESSAGES ) ) | |
755 | { | |
756 | string = cstring_replaceChar(string, '\n', ' '); | |
757 | } | |
758 | ||
759 | ||
84380658 | 760 | if (c->post) |
761 | { | |
762 | voptgenerror (FLG_FUNCTIONPOST, string, errorLoc); | |
616915dd | 763 | } |
764 | else | |
765 | { | |
bb7c2085 | 766 | if (constraint_hasMaxSet (c)) |
767 | { | |
768 | voptgenerror (FLG_BOUNDSWRITE, string, errorLoc); | |
769 | } | |
4ab867d6 | 770 | else |
bb7c2085 | 771 | { |
772 | voptgenerror (FLG_BOUNDSREAD, string, errorLoc); | |
773 | } | |
616915dd | 774 | } |
84380658 | 775 | |
86d93ed3 | 776 | fileloc_free(errorLoc); |
616915dd | 777 | } |
778 | ||
28bf4b0b | 779 | static cstring constraint_printDeep (constraint c) |
616915dd | 780 | { |
28bf4b0b | 781 | cstring genExpr; |
616915dd | 782 | cstring st = cstring_undefined; |
783 | ||
86d93ed3 | 784 | st = constraint_print(c); |
28bf4b0b | 785 | |
4ab867d6 | 786 | if (c->orig != constraint_undefined) |
787 | { | |
bb7c2085 | 788 | st = cstring_appendChar (st, '\n'); |
789 | genExpr = exprNode_unparse (c->orig->generatingExpr); | |
790 | ||
4ab867d6 | 791 | if (!c->post) |
792 | { | |
793 | if (c->orig->fcnPre) | |
bb7c2085 | 794 | { |
795 | st = cstring_concatFree (st, message (" derived from %s precondition: %q", | |
796 | genExpr, constraint_printDeep (c->orig))); | |
797 | } | |
4ab867d6 | 798 | else |
bb7c2085 | 799 | { |
800 | st = cstring_concatFree (st, message (" needed to satisfy precondition:\n%q", | |
801 | constraint_printDeep (c->orig))); | |
802 | } | |
4ab867d6 | 803 | } |
804 | else | |
805 | { | |
bb7c2085 | 806 | st = cstring_concatFree (st, message ("derived from: %q", |
807 | constraint_printDeep (c->orig))); | |
4ab867d6 | 808 | } |
809 | } | |
810 | ||
811 | return st; | |
4ab867d6 | 812 | } |
813 | ||
2934b455 | 814 | |
815 | static /*@only@*/ cstring constraint_printDetailedPostCondition (/*@observer@*/ /*@temp@*/ constraint c) | |
8f299805 | 816 | { |
817 | cstring st = cstring_undefined; | |
28bf4b0b | 818 | cstring genExpr; |
819 | ||
bb7c2085 | 820 | st = message ("Unsatisfied ensures constraint condition:\nSplint is unable to verify the constraint %q", constraint_printDeep (c)); |
28bf4b0b | 821 | |
822 | genExpr = exprNode_unparse (c->generatingExpr); | |
823 | ||
bb7c2085 | 824 | if (context_getFlag (FLG_CONSTRAINTLOCATION)) |
8f299805 | 825 | { |
826 | cstring temp; | |
b7b694d6 | 827 | |
828 | temp = message ("\nOriginal Generating expression %q: %s\n", | |
bb7c2085 | 829 | fileloc_unparse ( exprNode_getfileloc (c->generatingExpr)), |
830 | genExpr); | |
8f299805 | 831 | st = cstring_concatFree (st, temp); |
832 | ||
bb7c2085 | 833 | if (constraint_hasMaxSet (c)) |
8f299805 | 834 | { |
835 | temp = message ("Has MaxSet\n"); | |
836 | st = cstring_concatFree (st, temp); | |
837 | } | |
838 | } | |
839 | return st; | |
840 | } | |
841 | ||
4ab867d6 | 842 | cstring constraint_printDetailed (constraint c) |
843 | { | |
844 | cstring st = cstring_undefined; | |
03d670b6 | 845 | cstring temp = cstring_undefined; |
9276a168 | 846 | cstring genExpr; |
28bf4b0b | 847 | |
616915dd | 848 | if (!c->post) |
849 | { | |
bb7c2085 | 850 | st = message ("Unable to resolve constraint:\n%q", constraint_printDeep (c)); |
616915dd | 851 | } |
852 | else | |
853 | { | |
bb7c2085 | 854 | st = message ("Block Post condition:\nThis function block has the post condition %q", constraint_printDeep (c)); |
616915dd | 855 | } |
9280addf | 856 | |
bb7c2085 | 857 | if (constraint_hasMaxSet (c)) |
03d670b6 | 858 | { |
bb7c2085 | 859 | temp = cstring_makeLiteral ("Possible out-of-bounds store:\n"); |
03d670b6 | 860 | } |
861 | else | |
862 | { | |
bb7c2085 | 863 | temp = cstring_makeLiteral ("Possible out-of-bounds read:\n"); |
03d670b6 | 864 | } |
03d670b6 | 865 | |
28bf4b0b | 866 | genExpr = exprNode_unparse (c->generatingExpr); |
7bf96067 | 867 | |
bb7c2085 | 868 | if (context_getFlag (FLG_CONSTRAINTLOCATION)) |
9280addf | 869 | { |
7bf96067 | 870 | cstring temp2; |
bb7c2085 | 871 | temp2 = message ("%s\n", genExpr); |
7bf96067 | 872 | temp = cstring_concatFree (temp, temp2); |
9280addf | 873 | } |
7bf96067 | 874 | |
bb7c2085 | 875 | st = cstring_concatFree (temp,st); |
7bf96067 | 876 | |
616915dd | 877 | return st; |
878 | } | |
879 | ||
d46ce6a4 | 880 | /*@only@*/ cstring constraint_print (constraint c) /*@*/ |
616915dd | 881 | { |
882 | cstring st = cstring_undefined; | |
883 | cstring type = cstring_undefined; | |
dc92450f | 884 | llassert (c !=NULL); |
616915dd | 885 | if (c->post) |
886 | { | |
bb7c2085 | 887 | if (context_getFlag (FLG_PARENCONSTRAINT)) |
a779b61e | 888 | { |
889 | type = cstring_makeLiteral ("ensures: "); | |
890 | } | |
891 | else | |
892 | { | |
893 | type = cstring_makeLiteral ("ensures"); | |
894 | } | |
616915dd | 895 | } |
896 | else | |
897 | { | |
bb7c2085 | 898 | if (context_getFlag (FLG_PARENCONSTRAINT)) |
a779b61e | 899 | { |
900 | type = cstring_makeLiteral ("requires: "); | |
901 | } | |
902 | else | |
903 | { | |
904 | type = cstring_makeLiteral ("requires"); | |
905 | } | |
906 | ||
616915dd | 907 | } |
bb7c2085 | 908 | if (context_getFlag (FLG_PARENCONSTRAINT)) |
a779b61e | 909 | { |
910 | st = message ("%q: %q %q %q", | |
911 | type, | |
912 | constraintExpr_print (c->lexpr), | |
bb7c2085 | 913 | arithType_print (c->ar), |
914 | constraintExpr_print (c->expr) | |
a779b61e | 915 | ); |
916 | } | |
917 | else | |
918 | { | |
919 | st = message ("%q %q %q %q", | |
920 | type, | |
921 | constraintExpr_print (c->lexpr), | |
bb7c2085 | 922 | arithType_print (c->ar), |
923 | constraintExpr_print (c->expr) | |
616915dd | 924 | ); |
a779b61e | 925 | } |
616915dd | 926 | return st; |
927 | } | |
928 | ||
90bc41f7 | 929 | cstring constraint_printOr (constraint c) /*@*/ |
930 | { | |
931 | cstring ret; | |
932 | constraint temp; | |
933 | ||
934 | ret = cstring_undefined; | |
935 | temp = c; | |
936 | ||
bb7c2085 | 937 | ret = cstring_concatFree (ret, constraint_print (temp)); |
90bc41f7 | 938 | |
939 | temp = temp->or; | |
940 | ||
bb7c2085 | 941 | while ( constraint_isDefined (temp)) |
90bc41f7 | 942 | { |
bb7c2085 | 943 | ret = cstring_concatFree (ret, cstring_makeLiteral (" OR ")); |
944 | ret = cstring_concatFree (ret, constraint_print (temp)); | |
90bc41f7 | 945 | temp = temp->or; |
946 | } | |
947 | ||
948 | return ret; | |
949 | ||
950 | } | |
951 | ||
dc92450f | 952 | /*@only@*/ constraint constraint_doSRefFixBaseParam (/*@returned@*/ /*@only@*/ constraint precondition, |
616915dd | 953 | exprNodeList arglist) |
954 | { | |
955 | precondition->lexpr = constraintExpr_doSRefFixBaseParam (precondition->lexpr, | |
956 | arglist); | |
957 | precondition->expr = constraintExpr_doSRefFixBaseParam (precondition->expr, | |
958 | arglist); | |
959 | ||
960 | return precondition; | |
961 | } | |
962 | ||
963 | ||
28bf4b0b | 964 | constraint constraint_doFixResult (constraint postcondition, /*@dependent@*/ exprNode fcnCall) |
616915dd | 965 | { |
966 | postcondition = constraint_copy (postcondition); | |
967 | postcondition->lexpr = constraintExpr_doFixResult (postcondition->lexpr, fcnCall); | |
968 | postcondition->expr = constraintExpr_doFixResult (postcondition->expr, fcnCall); | |
969 | ||
970 | return postcondition; | |
971 | } | |
86d93ed3 | 972 | /*Commenting out temporally |
973 | ||
974 | / *@only@* /constraint constraint_doSRefFixInvarConstraint(constraint invar, sRef s, ctype ct ) | |
975 | { | |
976 | ||
977 | invar = constraint_copy (invar); | |
978 | invar->lexpr = constraintExpr_doSRefFixInvarConstraint (invar->lexpr, s, ct); | |
979 | invar->expr = constraintExpr_doSRefFixInvarConstraint (invar->expr, s, ct); | |
980 | ||
981 | return invar; | |
982 | } | |
983 | */ | |
616915dd | 984 | |
d46ce6a4 | 985 | /*@only@*/ constraint constraint_doSRefFixConstraintParam (constraint precondition, |
616915dd | 986 | exprNodeList arglist) |
987 | { | |
988 | ||
989 | precondition = constraint_copy (precondition); | |
990 | precondition->lexpr = constraintExpr_doSRefFixConstraintParam (precondition->lexpr, arglist); | |
991 | precondition->expr = constraintExpr_doSRefFixConstraintParam (precondition->expr, arglist); | |
992 | ||
4ab867d6 | 993 | precondition->fcnPre = FALSE; |
d9daf826 | 994 | return constraint_simplify(precondition); |
616915dd | 995 | } |
996 | ||
d46ce6a4 | 997 | constraint constraint_preserveOrig (/*@returned@*/ constraint c) /*@modifies c @*/ |
616915dd | 998 | { |
4ab867d6 | 999 | |
bb7c2085 | 1000 | DPRINTF ((message ("Doing constraint_preserverOrig for %q ", constraint_printDetailed (c)))); |
4ab867d6 | 1001 | |
d46ce6a4 | 1002 | if (c->orig == constraint_undefined) |
1003 | c->orig = constraint_copy (c); | |
4ab867d6 | 1004 | |
1005 | else if (c->orig->fcnPre) | |
1006 | { | |
1007 | constraint temp; | |
1008 | ||
1009 | temp = c->orig; | |
1010 | ||
1011 | /* avoid infinite loop */ | |
1012 | c->orig = NULL; | |
1013 | c->orig = constraint_copy (c); | |
1014 | if (c->orig->orig == NULL) | |
920a3797 | 1015 | { |
1016 | c->orig->orig = temp; | |
1017 | temp = NULL; | |
1018 | } | |
4ab867d6 | 1019 | else |
920a3797 | 1020 | { |
bb7c2085 | 1021 | llcontbug ((message ("Expected c->orig->orig to be null"))); |
1022 | constraint_free (c->orig->orig); | |
920a3797 | 1023 | c->orig->orig = temp; |
1024 | temp = NULL; | |
1025 | } | |
4ab867d6 | 1026 | } |
1027 | else | |
1028 | { | |
bb7c2085 | 1029 | DPRINTF ((message ("Not changing constraint"))); |
4ab867d6 | 1030 | } |
d46ce6a4 | 1031 | |
bb7c2085 | 1032 | DPRINTF ((message ("After Doing constraint_preserverOrig for %q ", constraint_printDetailed (c)))); |
4ab867d6 | 1033 | |
616915dd | 1034 | return c; |
1035 | } | |
1036 | /*@=fcnuse*/ | |
1037 | /*@=assignexpose*/ | |
1038 | /*@=czechfcns@*/ | |
84c9ffbf | 1039 | |
2934b455 | 1040 | |
84c9ffbf | 1041 | constraint constraint_togglePost (/*@returned@*/ constraint c) |
1042 | { | |
1043 | c->post = !c->post; | |
1044 | return c; | |
1045 | } | |
2934b455 | 1046 | |
1047 | constraint constraint_togglePostOrig (/*@returned@*/ constraint c) | |
1048 | { | |
1049 | if (c->orig != NULL) | |
bb7c2085 | 1050 | c->orig = constraint_togglePost (c->orig); |
2934b455 | 1051 | return c; |
1052 | } | |
1053 | ||
bb7c2085 | 1054 | bool constraint_hasOrig ( /*@observer@*/ /*@temp@*/ constraint c) |
2934b455 | 1055 | { |
1056 | if (c->orig == NULL) | |
1057 | return FALSE; | |
1058 | else | |
1059 | return TRUE; | |
1060 | } | |
920a3797 | 1061 | |
1062 | ||
1063 | constraint constraint_undump (FILE *f) | |
1064 | { | |
1065 | constraint c; | |
1066 | bool fcnPre; | |
1067 | bool post; | |
1068 | arithType ar; | |
1069 | ||
1070 | constraintExpr lexpr; | |
1071 | constraintExpr expr; | |
28bf4b0b | 1072 | |
920a3797 | 1073 | |
1074 | char * s; | |
1075 | ||
1076 | char *os; | |
1077 | ||
3be9a165 | 1078 | os = mstring_create (MAX_DUMP_LINE_LENGTH); |
920a3797 | 1079 | |
bb7c2085 | 1080 | s = fgets (os, MAX_DUMP_LINE_LENGTH, f); |
920a3797 | 1081 | |
1082 | /*@i33*/ /*this should probably be wrappered...*/ | |
1083 | ||
28bf4b0b | 1084 | fcnPre = (bool) reader_getInt (&s); |
bb7c2085 | 1085 | advanceField (&s); |
28bf4b0b | 1086 | post = (bool) reader_getInt (&s); |
bb7c2085 | 1087 | advanceField (&s); |
28bf4b0b | 1088 | ar = (arithType) reader_getInt (&s); |
920a3797 | 1089 | |
bb7c2085 | 1090 | s = fgets (os, MAX_DUMP_LINE_LENGTH, f); |
920a3797 | 1091 | |
28bf4b0b | 1092 | reader_checkChar (&s, 'l'); |
920a3797 | 1093 | |
1094 | lexpr = constraintExpr_undump (f); | |
1095 | ||
bb7c2085 | 1096 | s = fgets (os, MAX_DUMP_LINE_LENGTH, f); |
920a3797 | 1097 | |
28bf4b0b | 1098 | reader_checkChar (&s, 'r'); |
920a3797 | 1099 | expr = constraintExpr_undump (f); |
1100 | ||
bb7c2085 | 1101 | c = constraint_makeNew (); |
920a3797 | 1102 | |
1103 | c->fcnPre = fcnPre; | |
1104 | c->post = post; | |
1105 | c->ar = ar; | |
1106 | ||
1107 | c->lexpr = lexpr; | |
1108 | c->expr = expr; | |
1109 | ||
bb7c2085 | 1110 | free (os); |
1111 | c = constraint_preserveOrig (c); | |
920a3797 | 1112 | return c; |
1113 | } | |
1114 | ||
1115 | ||
1116 | void constraint_dump (/*@observer@*/ constraint c, FILE *f) | |
1117 | { | |
1118 | bool fcnPre; | |
1119 | bool post; | |
1120 | arithType ar; | |
1121 | ||
1122 | constraintExpr lexpr; | |
1123 | constraintExpr expr; | |
28bf4b0b | 1124 | |
920a3797 | 1125 | |
1126 | fcnPre = c->fcnPre; | |
1127 | post = c->post; | |
1128 | ar = c->ar; | |
1129 | lexpr = c->lexpr; | |
1130 | expr = c->expr; | |
1131 | ||
bb7c2085 | 1132 | fprintf (f, "%d@%d@%d\n", (int) fcnPre, (int) post, (int) ar); |
1133 | fprintf (f,"l\n"); | |
920a3797 | 1134 | constraintExpr_dump (lexpr, f); |
bb7c2085 | 1135 | fprintf (f,"r\n"); |
920a3797 | 1136 | constraintExpr_dump (expr, f); |
1137 | } | |
1138 | ||
1139 | ||
f4ec8018 | 1140 | int constraint_compare (/*@observer@*/ /*@temp@*/ const constraint * c1, /*@observer@*/ /*@temp@*/ const constraint * c2) /*@*/ |
02984642 | 1141 | { |
1142 | fileloc loc1, loc2; | |
1143 | ||
1144 | int ret; | |
1145 | ||
bb7c2085 | 1146 | llassert (constraint_isDefined (*c1)); |
1147 | llassert (constraint_isDefined (*c2)); | |
02984642 | 1148 | |
bb7c2085 | 1149 | if (constraint_isUndefined (*c1)) |
02984642 | 1150 | { |
bb7c2085 | 1151 | if (constraint_isUndefined (*c2)) |
02984642 | 1152 | return 0; |
1153 | else | |
1154 | return 1; | |
1155 | } | |
1156 | ||
bb7c2085 | 1157 | if (constraint_isUndefined (*c2)) |
02984642 | 1158 | { |
1159 | return -1; | |
1160 | } | |
1161 | ||
bb7c2085 | 1162 | loc1 = constraint_getFileloc (*c1); |
1163 | loc2 = constraint_getFileloc (*c2); | |
02984642 | 1164 | |
bb7c2085 | 1165 | ret = fileloc_compare (loc1, loc2); |
02984642 | 1166 | |
bb7c2085 | 1167 | fileloc_free (loc1); |
1168 | fileloc_free (loc2); | |
02984642 | 1169 | |
1170 | return ret; | |
1171 | } | |
1172 | ||
1173 | ||
84380658 | 1174 | bool constraint_isPost (/*@observer@*/ /*@temp@*/ constraint c) |
1175 | { | |
bb7c2085 | 1176 | llassert (constraint_isDefined (c)); |
84380658 | 1177 | |
bb7c2085 | 1178 | if (constraint_isUndefined (c)) |
84380658 | 1179 | return FALSE; |
1180 | ||
1181 | return (c->post); | |
1182 | } | |
a779b61e | 1183 | |
1184 | ||
bb7c2085 | 1185 | static int constraint_getDepth (/*@observer@*/ /*@temp@*/ constraint c) |
a779b61e | 1186 | { |
1187 | int l , r; | |
1188 | ||
bb7c2085 | 1189 | l = constraintExpr_getDepth (c->lexpr); |
1190 | r = constraintExpr_getDepth (c->expr); | |
a779b61e | 1191 | |
1192 | if (l > r) | |
1193 | { | |
bb7c2085 | 1194 | DPRINTF (( message ("constraint depth returning %d for %s", l, constraint_print (c)))); |
a779b61e | 1195 | return l; |
1196 | } | |
1197 | else | |
1198 | { | |
bb7c2085 | 1199 | DPRINTF (( message ("constraint depth returning %d for %s", r, constraint_print (c)))); |
a779b61e | 1200 | return r; |
1201 | } | |
1202 | } | |
1203 | ||
1204 | ||
1205 | bool constraint_tooDeep (/*@observer@*/ /*@temp@*/ constraint c) | |
1206 | { | |
1207 | int temp; | |
1208 | ||
bb7c2085 | 1209 | temp = constraint_getDepth (c); |
a779b61e | 1210 | |
bb7c2085 | 1211 | if (temp >= 20) |
a779b61e | 1212 | { |
1213 | return TRUE; | |
1214 | } | |
1215 | ||
1216 | return FALSE; | |
1217 | ||
1218 | } |