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65f973be | 1 | /* |
11db3170 | 2 | ** Splint - annotation-assisted static program checker |
c59f5181 | 3 | ** Copyright (C) 1994-2003 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 | |
1b8ae690 | 31 | # include "splintMacros.nf" |
616915dd | 32 | # include "basic.h" |
33 | # include "cgrammar.h" | |
34 | # include "cgrammar_tokens.h" | |
616915dd | 35 | # include "exprChecks.h" |
616915dd | 36 | # include "exprNodeSList.h" |
616915dd | 37 | |
2a6e9c30 | 38 | static /*@only@*/ cstring |
39 | constraint_unparseDetailedPostCondition (/*@observer@*/ /*@temp@*/ constraint p_c); | |
2934b455 | 40 | |
ccf0a4a8 | 41 | static /*@notnull@*/ /*@special@*/ constraint constraint_makeNew (void) |
42 | /*@post:isnull result->or, result->orig, result->generatingExpr, result->fcnPre @*/ | |
43 | /*@defines result->or, result->generatingExpr, result->orig, result->fcnPre @*/; | |
4ab867d6 | 44 | |
920a3797 | 45 | static void |
46 | advanceField (char **s) | |
47 | { | |
28bf4b0b | 48 | reader_checkChar (s, '@'); |
920a3797 | 49 | } |
50 | ||
c3e695ff | 51 | bool constraint_same (constraint c1, constraint c2) |
90bc41f7 | 52 | { |
15b3d2b2 | 53 | llassert (c1 != NULL); |
54 | llassert (c2 != NULL); | |
90bc41f7 | 55 | |
15b3d2b2 | 56 | if (c1->ar != c2->ar) |
57 | { | |
58 | return FALSE; | |
59 | } | |
60 | ||
bb7c2085 | 61 | if (!constraintExpr_similar (c1->lexpr, c2->lexpr)) |
15b3d2b2 | 62 | { |
63 | return FALSE; | |
64 | } | |
90bc41f7 | 65 | |
bb7c2085 | 66 | if (!constraintExpr_similar (c1->expr, c2->expr)) |
15b3d2b2 | 67 | { |
68 | return FALSE; | |
69 | } | |
90bc41f7 | 70 | |
71 | return TRUE; | |
72 | } | |
616915dd | 73 | |
74 | constraint makeConstraintParse3 (constraintExpr l, lltok relOp, constraintExpr r) | |
75 | { | |
76 | constraint ret; | |
bb7c2085 | 77 | ret = constraint_makeNew (); |
78 | llassert (constraintExpr_isDefined (l)); | |
616915dd | 79 | |
80 | ret->lexpr = constraintExpr_copy (l); | |
616915dd | 81 | |
80489f0a | 82 | if (lltok_getTok (relOp) == GE_OP) |
83 | { | |
616915dd | 84 | ret->ar = GTE; |
80489f0a | 85 | } |
86 | else if (lltok_getTok (relOp) == LE_OP) | |
87 | { | |
88 | ret->ar = LTE; | |
89 | } | |
90 | else if (lltok_getTok (relOp) == EQ_OP) | |
91 | { | |
92 | ret->ar = EQ; | |
93 | } | |
616915dd | 94 | else |
80489f0a | 95 | llfatalbug ( message ("Unsupported relational operator")); |
616915dd | 96 | |
97 | ret->expr = constraintExpr_copy (r); | |
98 | ||
99 | ret->post = TRUE; | |
90bc41f7 | 100 | |
bb7c2085 | 101 | ret->orig = constraint_copy (ret); |
90bc41f7 | 102 | |
103 | ret = constraint_simplify (ret); | |
b7b694d6 | 104 | /* ret->orig = ret; */ |
105 | ||
bb7c2085 | 106 | DPRINTF (("GENERATED CONSTRAINT:")); |
9a48d98c | 107 | DPRINTF ((message ("%s", constraint_unparse (ret)))); |
616915dd | 108 | return ret; |
109 | } | |
110 | ||
28bf4b0b | 111 | constraint constraint_copy (/*@temp@*/ /*@observer@*/ constraint c) |
616915dd | 112 | { |
113 | constraint ret; | |
90bc41f7 | 114 | |
bb7c2085 | 115 | llassert (constraint_isDefined (c)); |
b7b694d6 | 116 | |
bb7c2085 | 117 | ret = constraint_makeNew (); |
616915dd | 118 | ret->lexpr = constraintExpr_copy (c->lexpr); |
119 | ret->ar = c->ar; | |
120 | ret->expr = constraintExpr_copy (c->expr); | |
121 | ret->post = c->post; | |
795e7f34 | 122 | /*@-assignexpose@*/ |
28bf4b0b | 123 | ret->generatingExpr = c->generatingExpr; |
795e7f34 | 124 | /*@=assignexpose@*/ |
9280addf | 125 | |
616915dd | 126 | if (c->orig != NULL) |
127 | ret->orig = constraint_copy (c->orig); | |
128 | else | |
129 | ret->orig = NULL; | |
90bc41f7 | 130 | |
131 | if (c->or != NULL) | |
132 | ret->or = constraint_copy (c->or); | |
133 | else | |
134 | ret->or = NULL; | |
4ab867d6 | 135 | |
136 | ret->fcnPre = c->fcnPre; | |
90bc41f7 | 137 | |
616915dd | 138 | return ret; |
139 | } | |
140 | ||
b2a40ced | 141 | /*like copy except it doesn't allocate memory for the constraint*/ |
616915dd | 142 | |
d46ce6a4 | 143 | void constraint_overWrite (constraint c1, constraint c2) |
616915dd | 144 | { |
72704d73 | 145 | llassert (constraint_isDefined (c1) && constraint_isDefined (c2)); |
d46ce6a4 | 146 | |
147 | llassert (c1 != c2); | |
148 | ||
9a48d98c | 149 | DPRINTF ((message ("OverWriteing constraint %q with %q", constraint_unparse (c1), |
150 | constraint_unparse (c2)))); | |
d46ce6a4 | 151 | |
bb7c2085 | 152 | constraintExpr_free (c1->lexpr); |
153 | constraintExpr_free (c1->expr); | |
d46ce6a4 | 154 | |
616915dd | 155 | c1->lexpr = constraintExpr_copy (c2->lexpr); |
156 | c1->ar = c2->ar; | |
157 | c1->expr = constraintExpr_copy (c2->expr); | |
158 | c1->post = c2->post; | |
d46ce6a4 | 159 | |
160 | if (c1->orig != NULL) | |
161 | constraint_free (c1->orig); | |
162 | ||
616915dd | 163 | if (c2->orig != NULL) |
164 | c1->orig = constraint_copy (c2->orig); | |
165 | else | |
166 | c1->orig = NULL; | |
90bc41f7 | 167 | |
d46ce6a4 | 168 | if (c1->or != NULL) |
169 | constraint_free (c1->or); | |
170 | ||
90bc41f7 | 171 | if (c2->or != NULL) |
172 | c1->or = constraint_copy (c2->or); | |
173 | else | |
174 | c1->or = NULL; | |
4ab867d6 | 175 | |
176 | c1->fcnPre = c2->fcnPre; | |
795e7f34 | 177 | |
178 | /*@-assignexpose@*/ | |
4ab867d6 | 179 | c1->generatingExpr = c2->generatingExpr; |
795e7f34 | 180 | /*@=assignexpose@*/ |
616915dd | 181 | } |
182 | ||
616915dd | 183 | |
184 | ||
d46ce6a4 | 185 | static /*@notnull@*/ /*@special@*/ constraint constraint_makeNew (void) |
ccf0a4a8 | 186 | /*@post:isnull result->or, result->orig, result->generatingExpr, result->fcnPre @*/ |
187 | /*@defines result->or, result->generatingExpr, result->orig, result->fcnPre @*/ | |
616915dd | 188 | { |
189 | constraint ret; | |
bb7c2085 | 190 | ret = dmalloc (sizeof (*ret)); |
616915dd | 191 | ret->lexpr = NULL; |
192 | ret->expr = NULL; | |
193 | ret->ar = LT; | |
194 | ret->post = FALSE; | |
195 | ret->orig = NULL; | |
90bc41f7 | 196 | ret->or = NULL; |
9280addf | 197 | ret->generatingExpr = NULL; |
4ab867d6 | 198 | ret->fcnPre = NULL; |
dc92450f | 199 | return ret; |
616915dd | 200 | } |
201 | ||
72704d73 | 202 | /*@access exprNode@*/ |
203 | ||
b37cf05e | 204 | constraint constraint_addGeneratingExpr (/*@returned@*/ constraint c, /*@exposed@*/ exprNode e) |
9280addf | 205 | { |
72704d73 | 206 | |
207 | llassert (constraint_isDefined (c) ); | |
208 | ||
9280addf | 209 | if (c->generatingExpr == NULL) |
210 | { | |
28bf4b0b | 211 | c->generatingExpr = e; |
9a48d98c | 212 | DPRINTF ((message ("setting generatingExpr for %s to %s", constraint_unparse (c), exprNode_unparse (e)) )); |
9280addf | 213 | } |
214 | else | |
215 | { | |
9a48d98c | 216 | DPRINTF ((message ("Not setting generatingExpr for %s to %s", constraint_unparse (c), exprNode_unparse (e)) )); |
9280addf | 217 | } |
218 | return c; | |
219 | } | |
72704d73 | 220 | /*@noaccess exprNode@*/ |
9280addf | 221 | |
4ab867d6 | 222 | constraint constraint_origAddGeneratingExpr (/*@returned@*/ constraint c, exprNode e) |
223 | { | |
72704d73 | 224 | llassert (constraint_isDefined (c) ); |
225 | ||
4ab867d6 | 226 | if (c->orig != constraint_undefined) |
227 | { | |
bb7c2085 | 228 | c->orig = constraint_addGeneratingExpr (c->orig, e); |
4ab867d6 | 229 | } |
230 | else | |
231 | { | |
9a48d98c | 232 | DPRINTF ((message ("constraint_origAddGeneratingExpr: Not setting generatingExpr for %s to %s", constraint_unparse (c), exprNode_unparse (e)) )); |
4ab867d6 | 233 | } |
234 | return c; | |
235 | } | |
236 | ||
bb7c2085 | 237 | constraint constraint_setFcnPre (/*@returned@*/ constraint c) |
4ab867d6 | 238 | { |
239 | ||
72704d73 | 240 | llassert (constraint_isDefined (c) ); |
241 | ||
4ab867d6 | 242 | if (c->orig != constraint_undefined) |
243 | { | |
244 | c->orig->fcnPre = TRUE; | |
245 | } | |
246 | else | |
247 | { | |
248 | c->fcnPre = TRUE; | |
bb7c2085 | 249 | DPRINTF (( message ("Warning Setting fcnPre directly"))); |
4ab867d6 | 250 | } |
251 | return c; | |
252 | } | |
253 | ||
254 | ||
255 | ||
256 | ||
616915dd | 257 | fileloc constraint_getFileloc (constraint c) |
258 | { | |
72704d73 | 259 | llassert (constraint_isDefined (c) ); |
260 | ||
bb7c2085 | 261 | if (exprNode_isDefined (c->generatingExpr)) |
517a2db3 | 262 | return (fileloc_copy (exprNode_loc (c->generatingExpr))); |
72704d73 | 263 | |
ae133592 | 264 | return (constraintExpr_loc (c->lexpr)); |
616915dd | 265 | } |
266 | ||
9280addf | 267 | static bool checkForMaxSet (constraint c) |
517a2db3 | 268 | { |
269 | llassert (constraint_isDefined (c)); | |
270 | return (constraintExpr_hasMaxSet (c->lexpr) || constraintExpr_hasMaxSet (c->expr)); | |
9280addf | 271 | } |
272 | ||
bb7c2085 | 273 | bool constraint_hasMaxSet (constraint c) |
9280addf | 274 | { |
72704d73 | 275 | llassert (constraint_isDefined (c) ); |
276 | ||
bb7c2085 | 277 | if (checkForMaxSet (c)) |
03d670b6 | 278 | return TRUE; |
279 | ||
dc92450f | 280 | if (c->orig != NULL) |
9280addf | 281 | { |
bb7c2085 | 282 | if (checkForMaxSet (c->orig)) |
9280addf | 283 | return TRUE; |
284 | } | |
285 | ||
03d670b6 | 286 | return FALSE; |
9280addf | 287 | } |
288 | ||
abd7f895 | 289 | constraint constraint_makeReadSafeExprNode (exprNode po, exprNode ind) |
616915dd | 290 | { |
bb7c2085 | 291 | constraint ret = constraint_makeNew (); |
b7b694d6 | 292 | |
28bf4b0b | 293 | po = po; |
294 | ind = ind; | |
bb7c2085 | 295 | ret->lexpr = constraintExpr_makeMaxReadExpr (po); |
517a2db3 | 296 | ret->ar = GTE; |
297 | ret->expr = constraintExpr_makeValueExpr (ind); | |
d46ce6a4 | 298 | ret->post = FALSE; |
616915dd | 299 | return ret; |
300 | } | |
301 | ||
517a2db3 | 302 | constraint constraint_makeWriteSafeInt (exprNode po, int ind) |
616915dd | 303 | { |
bb7c2085 | 304 | constraint ret = constraint_makeNew (); |
bb7c2085 | 305 | ret->lexpr =constraintExpr_makeMaxSetExpr (po); |
616915dd | 306 | ret->ar = GTE; |
c3e695ff | 307 | ret->expr = constraintExpr_makeIntLiteral (ind); |
517a2db3 | 308 | /*@i1*/ return ret; |
616915dd | 309 | } |
310 | ||
84c9ffbf | 311 | constraint constraint_makeSRefSetBufferSize (sRef s, long int size) |
616915dd | 312 | { |
517a2db3 | 313 | constraint ret = constraint_makeNew (); |
314 | ret->lexpr = constraintExpr_makeSRefMaxset (s); | |
315 | ret->ar = EQ; | |
316 | ret->expr = constraintExpr_makeIntLiteral ((int)size); | |
317 | ret->post = TRUE; | |
318 | return ret; | |
616915dd | 319 | } |
320 | ||
321 | constraint constraint_makeSRefWriteSafeInt (sRef s, int ind) | |
322 | { | |
bb7c2085 | 323 | constraint ret = constraint_makeNew (); |
bb7c2085 | 324 | ret->lexpr = constraintExpr_makeSRefMaxset ( s); |
616915dd | 325 | ret->ar = GTE; |
517a2db3 | 326 | ret->expr = constraintExpr_makeIntLiteral (ind); |
616915dd | 327 | ret->post = TRUE; |
332e22fa | 328 | return ret; |
616915dd | 329 | } |
330 | ||
331 | /* drl added 01/12/2000 | |
517a2db3 | 332 | ** makes the constraint: Ensures index <= MaxRead (buffer) |
333 | */ | |
616915dd | 334 | |
bb7c2085 | 335 | constraint constraint_makeEnsureLteMaxRead (exprNode index, exprNode buffer) |
616915dd | 336 | { |
bb7c2085 | 337 | constraint ret = constraint_makeNew (); |
616915dd | 338 | |
339 | ret->lexpr = constraintExpr_makeValueExpr (index); | |
340 | ret->ar = LTE; | |
bb7c2085 | 341 | ret->expr = constraintExpr_makeMaxReadExpr (buffer); |
616915dd | 342 | ret->post = TRUE; |
343 | return ret; | |
344 | } | |
345 | ||
346 | constraint constraint_makeWriteSafeExprNode (exprNode po, exprNode ind) | |
347 | { | |
bb7c2085 | 348 | constraint ret = constraint_makeNew (); |
616915dd | 349 | |
bb7c2085 | 350 | ret->lexpr =constraintExpr_makeMaxSetExpr (po); |
616915dd | 351 | ret->ar = GTE; |
352 | ret->expr = constraintExpr_makeValueExpr (ind); | |
353 | /*@i1*/return ret; | |
354 | } | |
355 | ||
356 | ||
517a2db3 | 357 | constraint constraint_makeReadSafeInt (exprNode t1, int index) |
616915dd | 358 | { |
bb7c2085 | 359 | constraint ret = constraint_makeNew (); |
616915dd | 360 | |
bb7c2085 | 361 | ret->lexpr = constraintExpr_makeMaxReadExpr (t1); |
517a2db3 | 362 | ret->ar = GTE; |
363 | ret->expr = constraintExpr_makeIntLiteral (index); | |
d46ce6a4 | 364 | ret->post = FALSE; |
616915dd | 365 | return ret; |
366 | } | |
367 | ||
470b7798 | 368 | constraint constraint_makeSRefReadSafeInt (sRef s, int ind) |
369 | { | |
bb7c2085 | 370 | constraint ret = constraint_makeNew (); |
517a2db3 | 371 | |
bb7c2085 | 372 | ret->lexpr = constraintExpr_makeSRefMaxRead (s); |
470b7798 | 373 | ret->ar = GTE; |
c3e695ff | 374 | ret->expr = constraintExpr_makeIntLiteral (ind); |
470b7798 | 375 | ret->post = TRUE; |
332e22fa | 376 | return ret; |
470b7798 | 377 | } |
378 | ||
28bf4b0b | 379 | constraint constraint_makeEnsureMaxReadAtLeast (exprNode t1, exprNode t2, fileloc sequencePoint) |
616915dd | 380 | { |
517a2db3 | 381 | constraint ret = constraint_makeReadSafeExprNode (t1, t2); |
382 | llassert (constraint_isDefined (ret)); | |
72704d73 | 383 | |
b7b694d6 | 384 | ret->lexpr = constraintExpr_setFileloc (ret->lexpr, sequencePoint); |
616915dd | 385 | ret->post = TRUE; |
386 | ||
616915dd | 387 | return ret; |
388 | } | |
389 | ||
517a2db3 | 390 | static constraint |
391 | constraint_makeEnsuresOpConstraintExpr (/*@only@*/ constraintExpr c1, /*@only@*/ constraintExpr c2, | |
392 | fileloc sequencePoint, arithType ar) | |
470b7798 | 393 | { |
517a2db3 | 394 | constraint ret = constraint_makeNew (); |
bb7c2085 | 395 | llassert (constraintExpr_isDefined (c1) && constraintExpr_isDefined (c2)); |
470b7798 | 396 | ret->lexpr = c1; |
397 | ret->ar = ar; | |
398 | ret->post = TRUE; | |
517a2db3 | 399 | ret->expr = c2; |
470b7798 | 400 | ret->lexpr = constraintExpr_setFileloc (ret->lexpr, sequencePoint); |
401 | return ret; | |
402 | } | |
616915dd | 403 | |
517a2db3 | 404 | static constraint |
405 | constraint_makeEnsuresOp (/*@dependent@*/ exprNode e1, /*@dependent@*/ exprNode e2, | |
406 | fileloc sequencePoint, arithType ar) | |
616915dd | 407 | { |
470b7798 | 408 | constraintExpr c1, c2; |
517a2db3 | 409 | |
410 | if (!(exprNode_isDefined (e1) && exprNode_isDefined (e2))) | |
616915dd | 411 | { |
517a2db3 | 412 | llcontbug (message ("Invalid exprNode, Exprnodes are %s and %s", |
413 | exprNode_unparse (e1), exprNode_unparse (e2))); | |
616915dd | 414 | } |
470b7798 | 415 | |
517a2db3 | 416 | c1 = constraintExpr_makeValueExpr (e1); |
417 | c2 = constraintExpr_makeValueExpr (e2); | |
470b7798 | 418 | |
517a2db3 | 419 | return constraint_makeEnsuresOpConstraintExpr (c1, c2, sequencePoint, ar); |
616915dd | 420 | } |
421 | ||
616915dd | 422 | /* make constraint ensures e1 == e2 */ |
423 | ||
424 | constraint constraint_makeEnsureEqual (exprNode e1, exprNode e2, fileloc sequencePoint) | |
425 | { | |
ae133592 | 426 | if (FALSE) /* (!ctype_almostEqual (exprNode_getType (e1), exprNode_getType (e2))) */ |
427 | { | |
428 | /* If the types are not identical, need to be careful the element sizes may be different. */ | |
429 | //! return (constraint_makeEnsuresOp (e1, e2, sequencePoint, CASTEQ)); | |
430 | BADBRANCH; | |
431 | } | |
432 | else | |
433 | { | |
434 | return (constraint_makeEnsuresOp (e1, e2, sequencePoint, EQ)); | |
435 | } | |
616915dd | 436 | } |
437 | ||
517a2db3 | 438 | /* make constraint ensures e1 < e2 */ |
616915dd | 439 | constraint constraint_makeEnsureLessThan (exprNode e1, exprNode e2, fileloc sequencePoint) |
440 | { | |
470b7798 | 441 | constraintExpr t1, t2; |
d9daf826 | 442 | constraint t3; |
470b7798 | 443 | |
444 | t1 = constraintExpr_makeValueExpr (e1); | |
445 | t2 = constraintExpr_makeValueExpr (e2); | |
446 | ||
517a2db3 | 447 | /* change this to e1 <= (e2 -1) */ |
470b7798 | 448 | |
449 | t2 = constraintExpr_makeDecConstraintExpr (t2); | |
517a2db3 | 450 | t3 = constraint_makeEnsuresOpConstraintExpr (t1, t2, sequencePoint, LTE); |
451 | t3 = constraint_simplify (t3); | |
d9daf826 | 452 | return (t3); |
616915dd | 453 | } |
454 | ||
455 | constraint constraint_makeEnsureLessThanEqual (exprNode e1, exprNode e2, fileloc sequencePoint) | |
456 | { | |
517a2db3 | 457 | return (constraint_makeEnsuresOp (e1, e2, sequencePoint, LTE)); |
616915dd | 458 | } |
459 | ||
460 | constraint constraint_makeEnsureGreaterThan (exprNode e1, exprNode e2, fileloc sequencePoint) | |
461 | { | |
470b7798 | 462 | constraintExpr t1, t2; |
d9daf826 | 463 | constraint t3; |
470b7798 | 464 | |
465 | t1 = constraintExpr_makeValueExpr (e1); | |
466 | t2 = constraintExpr_makeValueExpr (e2); | |
467 | ||
470b7798 | 468 | /* change this to e1 >= (e2 + 1) */ |
469 | t2 = constraintExpr_makeIncConstraintExpr (t2); | |
470 | ||
d9daf826 | 471 | t3 = constraint_makeEnsuresOpConstraintExpr (t1, t2, sequencePoint, GTE); |
d9daf826 | 472 | t3 = constraint_simplify(t3); |
470b7798 | 473 | |
d9daf826 | 474 | return t3; |
616915dd | 475 | } |
476 | ||
477 | constraint constraint_makeEnsureGreaterThanEqual (exprNode e1, exprNode e2, fileloc sequencePoint) | |
478 | { | |
bb7c2085 | 479 | return ( constraint_makeEnsuresOp (e1, e2, sequencePoint, GTE)); |
616915dd | 480 | } |
481 | ||
482 | ||
616915dd | 483 | |
2934b455 | 484 | /* Makes the constraint e = e + f */ |
485 | constraint constraint_makeAddAssign (exprNode e, exprNode f, fileloc sequencePoint) | |
486 | { | |
487 | constraintExpr x1, x2, y; | |
488 | constraint ret; | |
489 | ||
bb7c2085 | 490 | ret = constraint_makeNew (); |
2934b455 | 491 | |
492 | x1 = constraintExpr_makeValueExpr (e); | |
bb7c2085 | 493 | x2 = constraintExpr_copy (x1); |
2934b455 | 494 | y = constraintExpr_makeValueExpr (f); |
495 | ||
496 | ret->lexpr = x1; | |
497 | ret->ar = EQ; | |
498 | ret->post = TRUE; | |
499 | ret->expr = constraintExpr_makeAddExpr (x2, y); | |
500 | ||
501 | ret->lexpr = constraintExpr_setFileloc (ret->lexpr, sequencePoint); | |
502 | ||
503 | return ret; | |
504 | } | |
505 | ||
506 | ||
507 | /* Makes the constraint e = e - f */ | |
508 | constraint constraint_makeSubtractAssign (exprNode e, exprNode f, fileloc sequencePoint) | |
509 | { | |
510 | constraintExpr x1, x2, y; | |
511 | constraint ret; | |
512 | ||
bb7c2085 | 513 | ret = constraint_makeNew (); |
2934b455 | 514 | |
515 | x1 = constraintExpr_makeValueExpr (e); | |
bb7c2085 | 516 | x2 = constraintExpr_copy (x1); |
2934b455 | 517 | y = constraintExpr_makeValueExpr (f); |
518 | ||
519 | ret->lexpr = x1; | |
520 | ret->ar = EQ; | |
521 | ret->post = TRUE; | |
522 | ret->expr = constraintExpr_makeSubtractExpr (x2, y); | |
523 | ||
524 | ret->lexpr = constraintExpr_setFileloc (ret->lexpr, sequencePoint); | |
525 | ||
526 | return ret; | |
527 | } | |
528 | ||
616915dd | 529 | constraint constraint_makeMaxSetSideEffectPostDecrement (exprNode e, fileloc sequencePoint) |
530 | { | |
bb7c2085 | 531 | constraint ret = constraint_makeNew (); |
616915dd | 532 | |
616915dd | 533 | ret->lexpr = constraintExpr_makeValueExpr (e); |
534 | ret->ar = EQ; | |
535 | ret->post = TRUE; | |
536 | ret->expr = constraintExpr_makeValueExpr (e); | |
537 | ret->expr = constraintExpr_makeDecConstraintExpr (ret->expr); | |
616915dd | 538 | ret->lexpr = constraintExpr_setFileloc (ret->lexpr, sequencePoint); |
616915dd | 539 | return ret; |
540 | } | |
541 | constraint constraint_makeMaxSetSideEffectPostIncrement (exprNode e, fileloc sequencePoint) | |
542 | { | |
bb7c2085 | 543 | constraint ret = constraint_makeNew (); |
616915dd | 544 | |
616915dd | 545 | ret->lexpr = constraintExpr_makeValueExpr (e); |
546 | ret->ar = EQ; | |
547 | ret->post = TRUE; | |
548 | ret->expr = constraintExpr_makeValueExpr (e); | |
549 | ret->expr = constraintExpr_makeIncConstraintExpr (ret->expr); | |
550 | ||
551 | ret->lexpr = constraintExpr_setFileloc (ret->lexpr, sequencePoint); | |
616915dd | 552 | return ret; |
553 | } | |
554 | ||
555 | ||
920a3797 | 556 | void constraint_free (/*@only@*/ constraint c) |
d46ce6a4 | 557 | { |
bb7c2085 | 558 | llassert (constraint_isDefined (c)); |
d46ce6a4 | 559 | |
560 | ||
bb7c2085 | 561 | if (constraint_isDefined (c->orig)) |
d46ce6a4 | 562 | constraint_free (c->orig); |
bb7c2085 | 563 | if ( constraint_isDefined (c->or)) |
d46ce6a4 | 564 | constraint_free (c->or); |
565 | ||
bb25bea6 | 566 | |
bb7c2085 | 567 | constraintExpr_free (c->lexpr); |
568 | constraintExpr_free (c->expr); | |
bb25bea6 | 569 | |
570 | c->orig = NULL; | |
571 | c->or = NULL; | |
572 | c->lexpr = NULL; | |
573 | c->expr = NULL; | |
574 | ||
d46ce6a4 | 575 | free (c); |
576 | ||
577 | } | |
578 | ||
dc92450f | 579 | cstring arithType_print (arithType ar) /*@*/ |
616915dd | 580 | { |
581 | cstring st = cstring_undefined; | |
582 | switch (ar) | |
583 | { | |
584 | case LT: | |
a779b61e | 585 | st = cstring_makeLiteral ("<"); |
616915dd | 586 | break; |
ae133592 | 587 | case LTE: |
a779b61e | 588 | st = cstring_makeLiteral ("<="); |
616915dd | 589 | break; |
ae133592 | 590 | case GT: |
a779b61e | 591 | st = cstring_makeLiteral (">"); |
616915dd | 592 | break; |
ae133592 | 593 | case GTE: |
a779b61e | 594 | st = cstring_makeLiteral (">="); |
616915dd | 595 | break; |
ae133592 | 596 | case EQ: |
a779b61e | 597 | st = cstring_makeLiteral ("=="); |
616915dd | 598 | break; |
ae133592 | 599 | case CASTEQ: |
600 | st = cstring_makeLiteral ("(!)=="); | |
601 | break; | |
602 | case NONNEGATIVE: | |
a779b61e | 603 | st = cstring_makeLiteral ("NONNEGATIVE"); |
616915dd | 604 | break; |
ae133592 | 605 | case POSITIVE: |
a779b61e | 606 | st = cstring_makeLiteral ("POSITIVE"); |
616915dd | 607 | break; |
608 | default: | |
bb7c2085 | 609 | llassert (FALSE); |
616915dd | 610 | break; |
611 | } | |
612 | return st; | |
613 | } | |
614 | ||
8f299805 | 615 | void constraint_printErrorPostCondition (constraint c, fileloc loc) |
616 | { | |
617 | cstring string; | |
618 | fileloc errorLoc, temp; | |
619 | ||
9a48d98c | 620 | string = constraint_unparseDetailedPostCondition (c); |
8f299805 | 621 | errorLoc = loc; |
8f299805 | 622 | loc = NULL; |
623 | ||
bb7c2085 | 624 | temp = constraint_getFileloc (c); |
9276a168 | 625 | |
ae133592 | 626 | if (context_getFlag (FLG_BOUNDSCOMPACTERRORMESSAGES)) |
9276a168 | 627 | { |
ae133592 | 628 | string = cstring_replaceChar (string, '\n', ' '); |
9276a168 | 629 | } |
630 | ||
bb7c2085 | 631 | if (fileloc_isDefined (temp)) |
8f299805 | 632 | { |
633 | errorLoc = temp; | |
ae133592 | 634 | voptgenerror (FLG_CHECKPOST, string, errorLoc); |
bb7c2085 | 635 | fileloc_free (temp); |
8f299805 | 636 | } |
637 | else | |
638 | { | |
ae133592 | 639 | voptgenerror (FLG_CHECKPOST, string, errorLoc); |
8f299805 | 640 | } |
641 | } | |
642 | ||
f4ec8018 | 643 | /*drl added 8-11-001*/ |
644 | cstring constraint_printLocation (/*@observer@*/ /*@temp@*/ constraint c) /*@*/ | |
645 | { | |
646 | cstring string, ret; | |
647 | fileloc errorLoc; | |
648 | ||
9a48d98c | 649 | string = constraint_unparse (c); |
f4ec8018 | 650 | |
bb7c2085 | 651 | errorLoc = constraint_getFileloc (c); |
f4ec8018 | 652 | |
bb7c2085 | 653 | ret = message ("constraint: %q @ %q", string, fileloc_unparse (errorLoc)); |
bb7c2085 | 654 | fileloc_free (errorLoc); |
f4ec8018 | 655 | return ret; |
656 | ||
657 | } | |
8f299805 | 658 | |
659 | ||
660 | ||
616915dd | 661 | void constraint_printError (constraint c, fileloc loc) |
662 | { | |
663 | cstring string; | |
4ab867d6 | 664 | fileloc errorLoc, temp; |
e5f31c00 | 665 | |
fba0ed37 | 666 | bool isLikely; |
72704d73 | 667 | |
668 | llassert (constraint_isDefined (c) ); | |
669 | ||
e5f31c00 | 670 | /*drl 11/26/2001 avoid printing tautological constraints */ |
bb7c2085 | 671 | if (constraint_isAlwaysTrue (c)) |
e5f31c00 | 672 | { |
673 | return; | |
674 | } | |
675 | ||
676 | ||
9a48d98c | 677 | string = constraint_unparseDetailed (c); |
9280addf | 678 | |
679 | errorLoc = loc; | |
680 | ||
bb7c2085 | 681 | temp = constraint_getFileloc (c); |
4ab867d6 | 682 | |
bb7c2085 | 683 | if (fileloc_isDefined (temp)) |
616915dd | 684 | { |
4ab867d6 | 685 | errorLoc = temp; |
84380658 | 686 | } |
687 | else | |
688 | { | |
bb7c2085 | 689 | llassert (FALSE); |
ae133592 | 690 | DPRINTF (("constraint %s had undefined fileloc %s", |
691 | constraint_unparse (c), fileloc_unparse (temp))); | |
bb7c2085 | 692 | fileloc_free (temp); |
693 | errorLoc = fileloc_copy (errorLoc); | |
84380658 | 694 | } |
9276a168 | 695 | |
696 | ||
ae133592 | 697 | if (context_getFlag (FLG_BOUNDSCOMPACTERRORMESSAGES)) |
9276a168 | 698 | { |
699 | string = cstring_replaceChar(string, '\n', ' '); | |
700 | } | |
701 | ||
fba0ed37 | 702 | /*drl added 12/19/2002 print |
703 | a different error fro "likely" bounds-errors*/ | |
704 | ||
ae133592 | 705 | isLikely = constraint_isConstantOnly (c); |
9276a168 | 706 | |
fba0ed37 | 707 | if (isLikely) |
708 | { | |
709 | if (c->post) | |
710 | { | |
711 | voptgenerror (FLG_FUNCTIONPOST, string, errorLoc); | |
712 | } | |
713 | else | |
714 | { | |
715 | if (constraint_hasMaxSet (c)) | |
716 | { | |
717 | voptgenerror (FLG_LIKELYBOUNDSWRITE, string, errorLoc); | |
718 | } | |
719 | else | |
720 | { | |
721 | voptgenerror (FLG_LIKELYBOUNDSREAD, string, errorLoc); | |
722 | } | |
723 | } | |
724 | } | |
725 | else if (c->post) | |
84380658 | 726 | { |
727 | voptgenerror (FLG_FUNCTIONPOST, string, errorLoc); | |
616915dd | 728 | } |
729 | else | |
730 | { | |
bb7c2085 | 731 | if (constraint_hasMaxSet (c)) |
732 | { | |
733 | voptgenerror (FLG_BOUNDSWRITE, string, errorLoc); | |
734 | } | |
4ab867d6 | 735 | else |
bb7c2085 | 736 | { |
737 | voptgenerror (FLG_BOUNDSREAD, string, errorLoc); | |
738 | } | |
616915dd | 739 | } |
84380658 | 740 | |
86d93ed3 | 741 | fileloc_free(errorLoc); |
616915dd | 742 | } |
743 | ||
9a48d98c | 744 | static cstring constraint_unparseDeep (constraint c) |
616915dd | 745 | { |
28bf4b0b | 746 | cstring genExpr; |
9a48d98c | 747 | cstring st; |
72704d73 | 748 | |
9a48d98c | 749 | llassert (constraint_isDefined (c)); |
750 | st = constraint_unparse (c); | |
28bf4b0b | 751 | |
4ab867d6 | 752 | if (c->orig != constraint_undefined) |
753 | { | |
bb7c2085 | 754 | st = cstring_appendChar (st, '\n'); |
755 | genExpr = exprNode_unparse (c->orig->generatingExpr); | |
756 | ||
4ab867d6 | 757 | if (!c->post) |
758 | { | |
759 | if (c->orig->fcnPre) | |
bb7c2085 | 760 | { |
761 | st = cstring_concatFree (st, message (" derived from %s precondition: %q", | |
9a48d98c | 762 | genExpr, constraint_unparseDeep (c->orig))); |
bb7c2085 | 763 | } |
4ab867d6 | 764 | else |
bb7c2085 | 765 | { |
766 | st = cstring_concatFree (st, message (" needed to satisfy precondition:\n%q", | |
9a48d98c | 767 | constraint_unparseDeep (c->orig))); |
bb7c2085 | 768 | } |
4ab867d6 | 769 | } |
770 | else | |
771 | { | |
bb7c2085 | 772 | st = cstring_concatFree (st, message ("derived from: %q", |
ae133592 | 773 | constraint_unparseDeep (c->orig))); |
4ab867d6 | 774 | } |
775 | } | |
776 | ||
777 | return st; | |
4ab867d6 | 778 | } |
779 | ||
2934b455 | 780 | |
9a48d98c | 781 | static /*@only@*/ cstring constraint_unparseDetailedPostCondition (/*@observer@*/ /*@temp@*/ constraint c) |
8f299805 | 782 | { |
783 | cstring st = cstring_undefined; | |
28bf4b0b | 784 | cstring genExpr; |
72704d73 | 785 | |
786 | llassert (constraint_isDefined (c) ); | |
787 | ||
9a48d98c | 788 | st = message ("Unsatisfied ensures constraint condition:\nSplint is unable to verify the constraint %q", |
789 | constraint_unparseDeep (c)); | |
28bf4b0b | 790 | |
791 | genExpr = exprNode_unparse (c->generatingExpr); | |
792 | ||
bb7c2085 | 793 | if (context_getFlag (FLG_CONSTRAINTLOCATION)) |
8f299805 | 794 | { |
795 | cstring temp; | |
b7b694d6 | 796 | |
797 | temp = message ("\nOriginal Generating expression %q: %s\n", | |
517a2db3 | 798 | fileloc_unparse (exprNode_loc (c->generatingExpr)), |
bb7c2085 | 799 | genExpr); |
8f299805 | 800 | st = cstring_concatFree (st, temp); |
801 | ||
bb7c2085 | 802 | if (constraint_hasMaxSet (c)) |
8f299805 | 803 | { |
804 | temp = message ("Has MaxSet\n"); | |
805 | st = cstring_concatFree (st, temp); | |
806 | } | |
807 | } | |
808 | return st; | |
809 | } | |
810 | ||
9a48d98c | 811 | cstring constraint_unparseDetailed (constraint c) |
4ab867d6 | 812 | { |
813 | cstring st = cstring_undefined; | |
03d670b6 | 814 | cstring temp = cstring_undefined; |
9276a168 | 815 | cstring genExpr; |
fba0ed37 | 816 | bool isLikely; |
72704d73 | 817 | |
818 | llassert (constraint_isDefined (c) ); | |
819 | ||
616915dd | 820 | if (!c->post) |
821 | { | |
9a48d98c | 822 | st = message ("Unable to resolve constraint:\n%q", constraint_unparseDeep (c)); |
616915dd | 823 | } |
824 | else | |
825 | { | |
9a48d98c | 826 | st = message ("Block Post condition:\nThis function block has the post condition %q", constraint_unparseDeep (c)); |
616915dd | 827 | } |
9280addf | 828 | |
fba0ed37 | 829 | isLikely = constraint_isConstantOnly(c); |
830 | ||
831 | if (isLikely) | |
03d670b6 | 832 | { |
fba0ed37 | 833 | if (constraint_hasMaxSet (c)) |
834 | { | |
835 | temp = cstring_makeLiteral ("Likely out-of-bounds store:\n"); | |
836 | } | |
837 | else | |
838 | { | |
839 | temp = cstring_makeLiteral ("Likely out-of-bounds read:\n"); | |
840 | } | |
03d670b6 | 841 | } |
842 | else | |
843 | { | |
fba0ed37 | 844 | |
845 | if (constraint_hasMaxSet (c)) | |
846 | { | |
847 | temp = cstring_makeLiteral ("Possible out-of-bounds store:\n"); | |
848 | } | |
849 | else | |
850 | { | |
851 | temp = cstring_makeLiteral ("Possible out-of-bounds read:\n"); | |
852 | } | |
03d670b6 | 853 | } |
03d670b6 | 854 | |
28bf4b0b | 855 | genExpr = exprNode_unparse (c->generatingExpr); |
7bf96067 | 856 | |
bb7c2085 | 857 | if (context_getFlag (FLG_CONSTRAINTLOCATION)) |
9280addf | 858 | { |
7bf96067 | 859 | cstring temp2; |
bb7c2085 | 860 | temp2 = message ("%s\n", genExpr); |
7bf96067 | 861 | temp = cstring_concatFree (temp, temp2); |
9280addf | 862 | } |
7bf96067 | 863 | |
bb7c2085 | 864 | st = cstring_concatFree (temp,st); |
7bf96067 | 865 | |
616915dd | 866 | return st; |
867 | } | |
868 | ||
ae133592 | 869 | /*@only@*/ cstring constraint_unparse (constraint c) /*@*/ |
616915dd | 870 | { |
871 | cstring st = cstring_undefined; | |
872 | cstring type = cstring_undefined; | |
dc92450f | 873 | llassert (c !=NULL); |
616915dd | 874 | if (c->post) |
875 | { | |
bb7c2085 | 876 | if (context_getFlag (FLG_PARENCONSTRAINT)) |
a779b61e | 877 | { |
878 | type = cstring_makeLiteral ("ensures: "); | |
879 | } | |
880 | else | |
881 | { | |
882 | type = cstring_makeLiteral ("ensures"); | |
883 | } | |
616915dd | 884 | } |
885 | else | |
886 | { | |
bb7c2085 | 887 | if (context_getFlag (FLG_PARENCONSTRAINT)) |
a779b61e | 888 | { |
889 | type = cstring_makeLiteral ("requires: "); | |
890 | } | |
891 | else | |
892 | { | |
893 | type = cstring_makeLiteral ("requires"); | |
894 | } | |
895 | ||
616915dd | 896 | } |
bb7c2085 | 897 | if (context_getFlag (FLG_PARENCONSTRAINT)) |
a779b61e | 898 | { |
899 | st = message ("%q: %q %q %q", | |
900 | type, | |
901 | constraintExpr_print (c->lexpr), | |
bb7c2085 | 902 | arithType_print (c->ar), |
9a48d98c | 903 | constraintExpr_print (c->expr)); |
a779b61e | 904 | } |
905 | else | |
906 | { | |
907 | st = message ("%q %q %q %q", | |
908 | type, | |
909 | constraintExpr_print (c->lexpr), | |
bb7c2085 | 910 | arithType_print (c->ar), |
9a48d98c | 911 | constraintExpr_print (c->expr)); |
a779b61e | 912 | } |
616915dd | 913 | return st; |
914 | } | |
915 | ||
9a48d98c | 916 | cstring constraint_unparseOr (constraint c) /*@*/ |
90bc41f7 | 917 | { |
918 | cstring ret; | |
919 | constraint temp; | |
920 | ||
921 | ret = cstring_undefined; | |
72704d73 | 922 | |
923 | llassert (constraint_isDefined (c) ); | |
924 | ||
90bc41f7 | 925 | temp = c; |
926 | ||
9a48d98c | 927 | ret = cstring_concatFree (ret, constraint_unparse (temp)); |
90bc41f7 | 928 | |
929 | temp = temp->or; | |
930 | ||
bb7c2085 | 931 | while ( constraint_isDefined (temp)) |
90bc41f7 | 932 | { |
bb7c2085 | 933 | ret = cstring_concatFree (ret, cstring_makeLiteral (" OR ")); |
9a48d98c | 934 | ret = cstring_concatFree (ret, constraint_unparse (temp)); |
90bc41f7 | 935 | temp = temp->or; |
936 | } | |
937 | ||
938 | return ret; | |
939 | ||
940 | } | |
941 | ||
dc92450f | 942 | /*@only@*/ constraint constraint_doSRefFixBaseParam (/*@returned@*/ /*@only@*/ constraint precondition, |
616915dd | 943 | exprNodeList arglist) |
944 | { | |
72704d73 | 945 | |
946 | llassert (constraint_isDefined (precondition) ); | |
947 | ||
616915dd | 948 | precondition->lexpr = constraintExpr_doSRefFixBaseParam (precondition->lexpr, |
949 | arglist); | |
950 | precondition->expr = constraintExpr_doSRefFixBaseParam (precondition->expr, | |
951 | arglist); | |
952 | ||
953 | return precondition; | |
954 | } | |
955 | ||
956 | ||
28bf4b0b | 957 | constraint constraint_doFixResult (constraint postcondition, /*@dependent@*/ exprNode fcnCall) |
616915dd | 958 | { |
959 | postcondition = constraint_copy (postcondition); | |
72704d73 | 960 | |
961 | llassert (constraint_isDefined (postcondition) ); | |
962 | ||
963 | ||
616915dd | 964 | postcondition->lexpr = constraintExpr_doFixResult (postcondition->lexpr, fcnCall); |
965 | postcondition->expr = constraintExpr_doFixResult (postcondition->expr, fcnCall); | |
966 | ||
967 | return postcondition; | |
968 | } | |
86d93ed3 | 969 | /*Commenting out temporally |
970 | ||
971 | / *@only@* /constraint constraint_doSRefFixInvarConstraint(constraint invar, sRef s, ctype ct ) | |
972 | { | |
973 | ||
974 | invar = constraint_copy (invar); | |
975 | invar->lexpr = constraintExpr_doSRefFixInvarConstraint (invar->lexpr, s, ct); | |
976 | invar->expr = constraintExpr_doSRefFixInvarConstraint (invar->expr, s, ct); | |
977 | ||
978 | return invar; | |
979 | } | |
980 | */ | |
616915dd | 981 | |
d46ce6a4 | 982 | /*@only@*/ constraint constraint_doSRefFixConstraintParam (constraint precondition, |
616915dd | 983 | exprNodeList arglist) |
984 | { | |
985 | ||
986 | precondition = constraint_copy (precondition); | |
72704d73 | 987 | |
988 | llassert (constraint_isDefined (precondition) ); | |
989 | ||
616915dd | 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 | { |
9a48d98c | 999 | DPRINTF (("Doing constraint_preserverOrig for %q", constraint_printDetailed (c))); |
1000 | llassert (constraint_isDefined (c)); | |
4ab867d6 | 1001 | |
d46ce6a4 | 1002 | if (c->orig == constraint_undefined) |
9a48d98c | 1003 | { |
1004 | c->orig = constraint_copy (c); | |
1005 | } | |
4ab867d6 | 1006 | else if (c->orig->fcnPre) |
1007 | { | |
9a48d98c | 1008 | constraint temp = c->orig; |
4ab867d6 | 1009 | |
1010 | /* avoid infinite loop */ | |
1011 | c->orig = NULL; | |
1012 | c->orig = constraint_copy (c); | |
72704d73 | 1013 | /*drl 03/2/2003 if c != NULL then the copy of c will != null*/ |
1014 | llassert (constraint_isDefined (c->orig) ); | |
1015 | ||
4ab867d6 | 1016 | if (c->orig->orig == NULL) |
920a3797 | 1017 | { |
1018 | c->orig->orig = temp; | |
1019 | temp = NULL; | |
1020 | } | |
4ab867d6 | 1021 | else |
920a3797 | 1022 | { |
bb7c2085 | 1023 | llcontbug ((message ("Expected c->orig->orig to be null"))); |
1024 | constraint_free (c->orig->orig); | |
920a3797 | 1025 | c->orig->orig = temp; |
1026 | temp = NULL; | |
1027 | } | |
4ab867d6 | 1028 | } |
1029 | else | |
1030 | { | |
9a48d98c | 1031 | DPRINTF (("Not changing constraint")); |
4ab867d6 | 1032 | } |
d46ce6a4 | 1033 | |
9a48d98c | 1034 | DPRINTF ((message ("After Doing constraint_preserverOrig for %q ", constraint_unparseDetailed (c)))); |
616915dd | 1035 | return c; |
1036 | } | |
2934b455 | 1037 | |
84c9ffbf | 1038 | constraint constraint_togglePost (/*@returned@*/ constraint c) |
1039 | { | |
9a48d98c | 1040 | llassert (constraint_isDefined (c)); |
84c9ffbf | 1041 | c->post = !c->post; |
1042 | return c; | |
1043 | } | |
2934b455 | 1044 | |
1045 | constraint constraint_togglePostOrig (/*@returned@*/ constraint c) | |
1046 | { | |
9a48d98c | 1047 | llassert (constraint_isDefined (c)); |
72704d73 | 1048 | |
2934b455 | 1049 | if (c->orig != NULL) |
9a48d98c | 1050 | { |
1051 | c->orig = constraint_togglePost (c->orig); | |
1052 | } | |
1053 | ||
2934b455 | 1054 | return c; |
1055 | } | |
1056 | ||
bb7c2085 | 1057 | bool constraint_hasOrig ( /*@observer@*/ /*@temp@*/ constraint c) |
2934b455 | 1058 | { |
9a48d98c | 1059 | llassert (constraint_isDefined (c)); |
1060 | return (c->orig != NULL); | |
2934b455 | 1061 | } |
920a3797 | 1062 | |
1063 | ||
1064 | constraint constraint_undump (FILE *f) | |
1065 | { | |
1066 | constraint c; | |
9a48d98c | 1067 | bool fcnPre, post; |
1068 | arithType ar; | |
1069 | constraintExpr lexpr, expr; | |
1070 | char *s, *os; | |
920a3797 | 1071 | |
3be9a165 | 1072 | os = mstring_create (MAX_DUMP_LINE_LENGTH); |
bb7c2085 | 1073 | s = fgets (os, MAX_DUMP_LINE_LENGTH, f); |
920a3797 | 1074 | |
9a48d98c | 1075 | if (!mstring_isDefined (s)) |
72704d73 | 1076 | { |
9a48d98c | 1077 | llfatalbug (message ("Library file is corrupted") ); |
72704d73 | 1078 | } |
920a3797 | 1079 | |
28bf4b0b | 1080 | fcnPre = (bool) reader_getInt (&s); |
bb7c2085 | 1081 | advanceField (&s); |
28bf4b0b | 1082 | post = (bool) reader_getInt (&s); |
bb7c2085 | 1083 | advanceField (&s); |
28bf4b0b | 1084 | ar = (arithType) reader_getInt (&s); |
9a48d98c | 1085 | |
bb7c2085 | 1086 | s = fgets (os, MAX_DUMP_LINE_LENGTH, f); |
920a3797 | 1087 | |
72704d73 | 1088 | if (! mstring_isDefined(s) ) |
1089 | { | |
1090 | llfatalbug(message("Library file is corrupted") ); | |
1091 | } | |
1092 | ||
28bf4b0b | 1093 | reader_checkChar (&s, 'l'); |
920a3797 | 1094 | |
1095 | lexpr = constraintExpr_undump (f); | |
1096 | ||
bb7c2085 | 1097 | s = fgets (os, MAX_DUMP_LINE_LENGTH, f); |
920a3797 | 1098 | |
28bf4b0b | 1099 | reader_checkChar (&s, 'r'); |
72704d73 | 1100 | |
1101 | if (! mstring_isDefined(s) ) | |
1102 | { | |
1103 | llfatalbug(message("Library file is corrupted") ); | |
1104 | } | |
1105 | ||
920a3797 | 1106 | expr = constraintExpr_undump (f); |
1107 | ||
bb7c2085 | 1108 | c = constraint_makeNew (); |
920a3797 | 1109 | |
1110 | c->fcnPre = fcnPre; | |
1111 | c->post = post; | |
1112 | c->ar = ar; | |
1113 | ||
1114 | c->lexpr = lexpr; | |
1115 | c->expr = expr; | |
1116 | ||
bb7c2085 | 1117 | free (os); |
1118 | c = constraint_preserveOrig (c); | |
920a3797 | 1119 | return c; |
1120 | } | |
1121 | ||
1122 | ||
1123 | void constraint_dump (/*@observer@*/ constraint c, FILE *f) | |
1124 | { | |
1125 | bool fcnPre; | |
1126 | bool post; | |
1127 | arithType ar; | |
1128 | ||
1129 | constraintExpr lexpr; | |
1130 | constraintExpr expr; | |
28bf4b0b | 1131 | |
72704d73 | 1132 | llassert (constraint_isDefined (c) ); |
1133 | ||
920a3797 | 1134 | fcnPre = c->fcnPre; |
1135 | post = c->post; | |
1136 | ar = c->ar; | |
1137 | lexpr = c->lexpr; | |
1138 | expr = c->expr; | |
1139 | ||
bb7c2085 | 1140 | fprintf (f, "%d@%d@%d\n", (int) fcnPre, (int) post, (int) ar); |
1141 | fprintf (f,"l\n"); | |
920a3797 | 1142 | constraintExpr_dump (lexpr, f); |
bb7c2085 | 1143 | fprintf (f,"r\n"); |
920a3797 | 1144 | constraintExpr_dump (expr, f); |
1145 | } | |
1146 | ||
1147 | ||
f4ec8018 | 1148 | int constraint_compare (/*@observer@*/ /*@temp@*/ const constraint * c1, /*@observer@*/ /*@temp@*/ const constraint * c2) /*@*/ |
02984642 | 1149 | { |
1150 | fileloc loc1, loc2; | |
1151 | ||
1152 | int ret; | |
1153 | ||
bb7c2085 | 1154 | llassert (constraint_isDefined (*c1)); |
1155 | llassert (constraint_isDefined (*c2)); | |
02984642 | 1156 | |
bb7c2085 | 1157 | if (constraint_isUndefined (*c1)) |
02984642 | 1158 | { |
bb7c2085 | 1159 | if (constraint_isUndefined (*c2)) |
02984642 | 1160 | return 0; |
1161 | else | |
1162 | return 1; | |
1163 | } | |
1164 | ||
bb7c2085 | 1165 | if (constraint_isUndefined (*c2)) |
02984642 | 1166 | { |
1167 | return -1; | |
1168 | } | |
1169 | ||
bb7c2085 | 1170 | loc1 = constraint_getFileloc (*c1); |
1171 | loc2 = constraint_getFileloc (*c2); | |
02984642 | 1172 | |
bb7c2085 | 1173 | ret = fileloc_compare (loc1, loc2); |
02984642 | 1174 | |
bb7c2085 | 1175 | fileloc_free (loc1); |
1176 | fileloc_free (loc2); | |
02984642 | 1177 | |
1178 | return ret; | |
1179 | } | |
1180 | ||
1181 | ||
84380658 | 1182 | bool constraint_isPost (/*@observer@*/ /*@temp@*/ constraint c) |
1183 | { | |
bb7c2085 | 1184 | llassert (constraint_isDefined (c)); |
84380658 | 1185 | |
bb7c2085 | 1186 | if (constraint_isUndefined (c)) |
84380658 | 1187 | return FALSE; |
1188 | ||
1189 | return (c->post); | |
1190 | } | |
a779b61e | 1191 | |
1192 | ||
bb7c2085 | 1193 | static int constraint_getDepth (/*@observer@*/ /*@temp@*/ constraint c) |
a779b61e | 1194 | { |
1195 | int l , r; | |
72704d73 | 1196 | |
1197 | llassert (constraint_isDefined (c) ); | |
1198 | ||
bb7c2085 | 1199 | l = constraintExpr_getDepth (c->lexpr); |
1200 | r = constraintExpr_getDepth (c->expr); | |
a779b61e | 1201 | |
1202 | if (l > r) | |
1203 | { | |
9a48d98c | 1204 | DPRINTF (( message ("constraint depth returning %d for %s", l, constraint_unparse (c)))); |
a779b61e | 1205 | return l; |
1206 | } | |
1207 | else | |
1208 | { | |
9a48d98c | 1209 | DPRINTF (( message ("constraint depth returning %d for %s", r, constraint_unparse (c)))); |
a779b61e | 1210 | return r; |
1211 | } | |
1212 | } | |
1213 | ||
1214 | ||
1215 | bool constraint_tooDeep (/*@observer@*/ /*@temp@*/ constraint c) | |
1216 | { | |
1217 | int temp; | |
1218 | ||
bb7c2085 | 1219 | temp = constraint_getDepth (c); |
a779b61e | 1220 | |
bb7c2085 | 1221 | if (temp >= 20) |
a779b61e | 1222 | { |
1223 | return TRUE; | |
1224 | } | |
1225 | ||
1226 | return FALSE; | |
1227 | ||
1228 | } | |
fba0ed37 | 1229 | |
1230 | /*drl added 12/19/2002*/ | |
1231 | /*whether constraints consist only of | |
1232 | terms which are constants*/ | |
1233 | bool constraint_isConstantOnly (constraint c) | |
1234 | { | |
1235 | bool l, r; | |
72704d73 | 1236 | |
1237 | llassert (constraint_isDefined (c) ); | |
1238 | ||
fba0ed37 | 1239 | l = constraintExpr_isConstantOnly(c->lexpr); |
1240 | r = constraintExpr_isConstantOnly(c->expr); | |
1241 | ||
1242 | if (l && r) | |
1243 | { | |
1244 | return TRUE; | |
1245 | } | |
1246 | ||
1247 | else | |
1248 | { | |
1249 | return FALSE; | |
1250 | } | |
1251 | ||
1252 | } |