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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 | { |
6317f163 | 113 | if (!constraint_isDefined (c)) |
114 | { | |
115 | return constraint_undefined; | |
116 | } | |
90bc41f7 | 117 | else |
6317f163 | 118 | { |
119 | constraint ret = constraint_makeNew (); | |
120 | ret->lexpr = constraintExpr_copy (c->lexpr); | |
121 | ret->ar = c->ar; | |
122 | ret->expr = constraintExpr_copy (c->expr); | |
123 | ret->post = c->post; | |
124 | /*@-assignexpose@*/ | |
125 | ret->generatingExpr = c->generatingExpr; | |
126 | /*@=assignexpose@*/ | |
127 | ||
128 | if (c->orig != NULL) | |
129 | ret->orig = constraint_copy (c->orig); | |
130 | else | |
131 | ret->orig = NULL; | |
132 | ||
133 | if (c->or != NULL) | |
134 | ret->or = constraint_copy (c->or); | |
135 | else | |
136 | ret->or = NULL; | |
137 | ||
138 | ret->fcnPre = c->fcnPre; | |
139 | ||
140 | return ret; | |
141 | } | |
616915dd | 142 | } |
143 | ||
b2a40ced | 144 | /*like copy except it doesn't allocate memory for the constraint*/ |
616915dd | 145 | |
d46ce6a4 | 146 | void constraint_overWrite (constraint c1, constraint c2) |
616915dd | 147 | { |
72704d73 | 148 | llassert (constraint_isDefined (c1) && constraint_isDefined (c2)); |
d46ce6a4 | 149 | |
150 | llassert (c1 != c2); | |
151 | ||
9a48d98c | 152 | DPRINTF ((message ("OverWriteing constraint %q with %q", constraint_unparse (c1), |
153 | constraint_unparse (c2)))); | |
d46ce6a4 | 154 | |
bb7c2085 | 155 | constraintExpr_free (c1->lexpr); |
156 | constraintExpr_free (c1->expr); | |
d46ce6a4 | 157 | |
616915dd | 158 | c1->lexpr = constraintExpr_copy (c2->lexpr); |
159 | c1->ar = c2->ar; | |
160 | c1->expr = constraintExpr_copy (c2->expr); | |
161 | c1->post = c2->post; | |
d46ce6a4 | 162 | |
163 | if (c1->orig != NULL) | |
164 | constraint_free (c1->orig); | |
165 | ||
616915dd | 166 | if (c2->orig != NULL) |
167 | c1->orig = constraint_copy (c2->orig); | |
168 | else | |
169 | c1->orig = NULL; | |
90bc41f7 | 170 | |
d46ce6a4 | 171 | if (c1->or != NULL) |
172 | constraint_free (c1->or); | |
173 | ||
90bc41f7 | 174 | if (c2->or != NULL) |
175 | c1->or = constraint_copy (c2->or); | |
176 | else | |
177 | c1->or = NULL; | |
4ab867d6 | 178 | |
179 | c1->fcnPre = c2->fcnPre; | |
795e7f34 | 180 | |
181 | /*@-assignexpose@*/ | |
4ab867d6 | 182 | c1->generatingExpr = c2->generatingExpr; |
795e7f34 | 183 | /*@=assignexpose@*/ |
616915dd | 184 | } |
185 | ||
616915dd | 186 | |
187 | ||
d46ce6a4 | 188 | static /*@notnull@*/ /*@special@*/ constraint constraint_makeNew (void) |
ccf0a4a8 | 189 | /*@post:isnull result->or, result->orig, result->generatingExpr, result->fcnPre @*/ |
190 | /*@defines result->or, result->generatingExpr, result->orig, result->fcnPre @*/ | |
616915dd | 191 | { |
192 | constraint ret; | |
bb7c2085 | 193 | ret = dmalloc (sizeof (*ret)); |
616915dd | 194 | ret->lexpr = NULL; |
195 | ret->expr = NULL; | |
196 | ret->ar = LT; | |
197 | ret->post = FALSE; | |
198 | ret->orig = NULL; | |
90bc41f7 | 199 | ret->or = NULL; |
9280addf | 200 | ret->generatingExpr = NULL; |
4ab867d6 | 201 | ret->fcnPre = NULL; |
dc92450f | 202 | return ret; |
616915dd | 203 | } |
204 | ||
72704d73 | 205 | /*@access exprNode@*/ |
206 | ||
b37cf05e | 207 | constraint constraint_addGeneratingExpr (/*@returned@*/ constraint c, /*@exposed@*/ exprNode e) |
9280addf | 208 | { |
6317f163 | 209 | if (!constraint_isDefined (c)) |
210 | { | |
211 | return c; | |
212 | } | |
72704d73 | 213 | |
9280addf | 214 | if (c->generatingExpr == NULL) |
215 | { | |
28bf4b0b | 216 | c->generatingExpr = e; |
9a48d98c | 217 | DPRINTF ((message ("setting generatingExpr for %s to %s", constraint_unparse (c), exprNode_unparse (e)) )); |
9280addf | 218 | } |
219 | else | |
220 | { | |
9a48d98c | 221 | DPRINTF ((message ("Not setting generatingExpr for %s to %s", constraint_unparse (c), exprNode_unparse (e)) )); |
9280addf | 222 | } |
223 | return c; | |
224 | } | |
72704d73 | 225 | /*@noaccess exprNode@*/ |
9280addf | 226 | |
4ab867d6 | 227 | constraint constraint_origAddGeneratingExpr (/*@returned@*/ constraint c, exprNode e) |
228 | { | |
72704d73 | 229 | llassert (constraint_isDefined (c) ); |
230 | ||
4ab867d6 | 231 | if (c->orig != constraint_undefined) |
232 | { | |
bb7c2085 | 233 | c->orig = constraint_addGeneratingExpr (c->orig, e); |
4ab867d6 | 234 | } |
235 | else | |
236 | { | |
9a48d98c | 237 | DPRINTF ((message ("constraint_origAddGeneratingExpr: Not setting generatingExpr for %s to %s", constraint_unparse (c), exprNode_unparse (e)) )); |
4ab867d6 | 238 | } |
239 | return c; | |
240 | } | |
241 | ||
bb7c2085 | 242 | constraint constraint_setFcnPre (/*@returned@*/ constraint c) |
4ab867d6 | 243 | { |
244 | ||
72704d73 | 245 | llassert (constraint_isDefined (c) ); |
246 | ||
4ab867d6 | 247 | if (c->orig != constraint_undefined) |
248 | { | |
249 | c->orig->fcnPre = TRUE; | |
250 | } | |
251 | else | |
252 | { | |
253 | c->fcnPre = TRUE; | |
bb7c2085 | 254 | DPRINTF (( message ("Warning Setting fcnPre directly"))); |
4ab867d6 | 255 | } |
256 | return c; | |
257 | } | |
258 | ||
259 | ||
260 | ||
261 | ||
616915dd | 262 | fileloc constraint_getFileloc (constraint c) |
263 | { | |
72704d73 | 264 | llassert (constraint_isDefined (c) ); |
265 | ||
bb7c2085 | 266 | if (exprNode_isDefined (c->generatingExpr)) |
517a2db3 | 267 | return (fileloc_copy (exprNode_loc (c->generatingExpr))); |
72704d73 | 268 | |
ae133592 | 269 | return (constraintExpr_loc (c->lexpr)); |
616915dd | 270 | } |
271 | ||
9280addf | 272 | static bool checkForMaxSet (constraint c) |
517a2db3 | 273 | { |
274 | llassert (constraint_isDefined (c)); | |
275 | return (constraintExpr_hasMaxSet (c->lexpr) || constraintExpr_hasMaxSet (c->expr)); | |
9280addf | 276 | } |
277 | ||
bb7c2085 | 278 | bool constraint_hasMaxSet (constraint c) |
9280addf | 279 | { |
72704d73 | 280 | llassert (constraint_isDefined (c) ); |
281 | ||
bb7c2085 | 282 | if (checkForMaxSet (c)) |
03d670b6 | 283 | return TRUE; |
284 | ||
dc92450f | 285 | if (c->orig != NULL) |
9280addf | 286 | { |
bb7c2085 | 287 | if (checkForMaxSet (c->orig)) |
9280addf | 288 | return TRUE; |
289 | } | |
290 | ||
03d670b6 | 291 | return FALSE; |
9280addf | 292 | } |
293 | ||
abd7f895 | 294 | constraint constraint_makeReadSafeExprNode (exprNode po, exprNode ind) |
616915dd | 295 | { |
bb7c2085 | 296 | constraint ret = constraint_makeNew (); |
b7b694d6 | 297 | |
28bf4b0b | 298 | po = po; |
299 | ind = ind; | |
bb7c2085 | 300 | ret->lexpr = constraintExpr_makeMaxReadExpr (po); |
517a2db3 | 301 | ret->ar = GTE; |
302 | ret->expr = constraintExpr_makeValueExpr (ind); | |
d46ce6a4 | 303 | ret->post = FALSE; |
616915dd | 304 | return ret; |
305 | } | |
306 | ||
517a2db3 | 307 | constraint constraint_makeWriteSafeInt (exprNode po, int ind) |
616915dd | 308 | { |
bb7c2085 | 309 | constraint ret = constraint_makeNew (); |
bb7c2085 | 310 | ret->lexpr =constraintExpr_makeMaxSetExpr (po); |
616915dd | 311 | ret->ar = GTE; |
c3e695ff | 312 | ret->expr = constraintExpr_makeIntLiteral (ind); |
517a2db3 | 313 | /*@i1*/ return ret; |
616915dd | 314 | } |
315 | ||
84c9ffbf | 316 | constraint constraint_makeSRefSetBufferSize (sRef s, long int size) |
616915dd | 317 | { |
517a2db3 | 318 | constraint ret = constraint_makeNew (); |
319 | ret->lexpr = constraintExpr_makeSRefMaxset (s); | |
320 | ret->ar = EQ; | |
321 | ret->expr = constraintExpr_makeIntLiteral ((int)size); | |
322 | ret->post = TRUE; | |
323 | return ret; | |
616915dd | 324 | } |
325 | ||
326 | constraint constraint_makeSRefWriteSafeInt (sRef s, int ind) | |
327 | { | |
bb7c2085 | 328 | constraint ret = constraint_makeNew (); |
bb7c2085 | 329 | ret->lexpr = constraintExpr_makeSRefMaxset ( s); |
616915dd | 330 | ret->ar = GTE; |
517a2db3 | 331 | ret->expr = constraintExpr_makeIntLiteral (ind); |
616915dd | 332 | ret->post = TRUE; |
332e22fa | 333 | return ret; |
616915dd | 334 | } |
335 | ||
336 | /* drl added 01/12/2000 | |
517a2db3 | 337 | ** makes the constraint: Ensures index <= MaxRead (buffer) |
338 | */ | |
616915dd | 339 | |
bb7c2085 | 340 | constraint constraint_makeEnsureLteMaxRead (exprNode index, exprNode buffer) |
616915dd | 341 | { |
bb7c2085 | 342 | constraint ret = constraint_makeNew (); |
616915dd | 343 | |
344 | ret->lexpr = constraintExpr_makeValueExpr (index); | |
345 | ret->ar = LTE; | |
bb7c2085 | 346 | ret->expr = constraintExpr_makeMaxReadExpr (buffer); |
616915dd | 347 | ret->post = TRUE; |
348 | return ret; | |
349 | } | |
350 | ||
351 | constraint constraint_makeWriteSafeExprNode (exprNode po, exprNode ind) | |
352 | { | |
bb7c2085 | 353 | constraint ret = constraint_makeNew (); |
616915dd | 354 | |
bb7c2085 | 355 | ret->lexpr =constraintExpr_makeMaxSetExpr (po); |
616915dd | 356 | ret->ar = GTE; |
357 | ret->expr = constraintExpr_makeValueExpr (ind); | |
358 | /*@i1*/return ret; | |
359 | } | |
360 | ||
361 | ||
517a2db3 | 362 | constraint constraint_makeReadSafeInt (exprNode t1, int index) |
616915dd | 363 | { |
bb7c2085 | 364 | constraint ret = constraint_makeNew (); |
616915dd | 365 | |
bb7c2085 | 366 | ret->lexpr = constraintExpr_makeMaxReadExpr (t1); |
517a2db3 | 367 | ret->ar = GTE; |
368 | ret->expr = constraintExpr_makeIntLiteral (index); | |
d46ce6a4 | 369 | ret->post = FALSE; |
616915dd | 370 | return ret; |
371 | } | |
372 | ||
470b7798 | 373 | constraint constraint_makeSRefReadSafeInt (sRef s, int ind) |
374 | { | |
bb7c2085 | 375 | constraint ret = constraint_makeNew (); |
517a2db3 | 376 | |
bb7c2085 | 377 | ret->lexpr = constraintExpr_makeSRefMaxRead (s); |
470b7798 | 378 | ret->ar = GTE; |
c3e695ff | 379 | ret->expr = constraintExpr_makeIntLiteral (ind); |
470b7798 | 380 | ret->post = TRUE; |
332e22fa | 381 | return ret; |
470b7798 | 382 | } |
383 | ||
28bf4b0b | 384 | constraint constraint_makeEnsureMaxReadAtLeast (exprNode t1, exprNode t2, fileloc sequencePoint) |
616915dd | 385 | { |
517a2db3 | 386 | constraint ret = constraint_makeReadSafeExprNode (t1, t2); |
387 | llassert (constraint_isDefined (ret)); | |
72704d73 | 388 | |
b7b694d6 | 389 | ret->lexpr = constraintExpr_setFileloc (ret->lexpr, sequencePoint); |
616915dd | 390 | ret->post = TRUE; |
391 | ||
616915dd | 392 | return ret; |
393 | } | |
394 | ||
517a2db3 | 395 | static constraint |
396 | constraint_makeEnsuresOpConstraintExpr (/*@only@*/ constraintExpr c1, /*@only@*/ constraintExpr c2, | |
397 | fileloc sequencePoint, arithType ar) | |
470b7798 | 398 | { |
6317f163 | 399 | if (constraintExpr_isDefined (c1) && constraintExpr_isDefined (c2)) |
400 | { | |
401 | constraint ret = constraint_makeNew (); | |
402 | ret->lexpr = c1; | |
403 | ret->ar = ar; | |
404 | ret->post = TRUE; | |
405 | ret->expr = c2; | |
406 | ret->lexpr = constraintExpr_setFileloc (ret->lexpr, sequencePoint); | |
407 | return ret; | |
408 | } | |
409 | else | |
410 | { | |
411 | return constraint_undefined; | |
412 | } | |
470b7798 | 413 | } |
616915dd | 414 | |
517a2db3 | 415 | static constraint |
416 | constraint_makeEnsuresOp (/*@dependent@*/ exprNode e1, /*@dependent@*/ exprNode e2, | |
417 | fileloc sequencePoint, arithType ar) | |
616915dd | 418 | { |
470b7798 | 419 | constraintExpr c1, c2; |
517a2db3 | 420 | |
421 | if (!(exprNode_isDefined (e1) && exprNode_isDefined (e2))) | |
616915dd | 422 | { |
517a2db3 | 423 | llcontbug (message ("Invalid exprNode, Exprnodes are %s and %s", |
424 | exprNode_unparse (e1), exprNode_unparse (e2))); | |
616915dd | 425 | } |
470b7798 | 426 | |
517a2db3 | 427 | c1 = constraintExpr_makeValueExpr (e1); |
428 | c2 = constraintExpr_makeValueExpr (e2); | |
470b7798 | 429 | |
517a2db3 | 430 | return constraint_makeEnsuresOpConstraintExpr (c1, c2, sequencePoint, ar); |
616915dd | 431 | } |
432 | ||
616915dd | 433 | /* make constraint ensures e1 == e2 */ |
434 | ||
435 | constraint constraint_makeEnsureEqual (exprNode e1, exprNode e2, fileloc sequencePoint) | |
436 | { | |
6317f163 | 437 | return (constraint_makeEnsuresOp (e1, e2, sequencePoint, EQ)); |
616915dd | 438 | } |
439 | ||
517a2db3 | 440 | /* make constraint ensures e1 < e2 */ |
616915dd | 441 | constraint constraint_makeEnsureLessThan (exprNode e1, exprNode e2, fileloc sequencePoint) |
442 | { | |
470b7798 | 443 | constraintExpr t1, t2; |
d9daf826 | 444 | constraint t3; |
470b7798 | 445 | |
446 | t1 = constraintExpr_makeValueExpr (e1); | |
447 | t2 = constraintExpr_makeValueExpr (e2); | |
448 | ||
517a2db3 | 449 | /* change this to e1 <= (e2 -1) */ |
470b7798 | 450 | |
451 | t2 = constraintExpr_makeDecConstraintExpr (t2); | |
517a2db3 | 452 | t3 = constraint_makeEnsuresOpConstraintExpr (t1, t2, sequencePoint, LTE); |
453 | t3 = constraint_simplify (t3); | |
d9daf826 | 454 | return (t3); |
616915dd | 455 | } |
456 | ||
457 | constraint constraint_makeEnsureLessThanEqual (exprNode e1, exprNode e2, fileloc sequencePoint) | |
458 | { | |
517a2db3 | 459 | return (constraint_makeEnsuresOp (e1, e2, sequencePoint, LTE)); |
616915dd | 460 | } |
461 | ||
462 | constraint constraint_makeEnsureGreaterThan (exprNode e1, exprNode e2, fileloc sequencePoint) | |
463 | { | |
470b7798 | 464 | constraintExpr t1, t2; |
d9daf826 | 465 | constraint t3; |
470b7798 | 466 | |
467 | t1 = constraintExpr_makeValueExpr (e1); | |
468 | t2 = constraintExpr_makeValueExpr (e2); | |
469 | ||
470b7798 | 470 | /* change this to e1 >= (e2 + 1) */ |
471 | t2 = constraintExpr_makeIncConstraintExpr (t2); | |
472 | ||
d9daf826 | 473 | t3 = constraint_makeEnsuresOpConstraintExpr (t1, t2, sequencePoint, GTE); |
d9daf826 | 474 | t3 = constraint_simplify(t3); |
470b7798 | 475 | |
d9daf826 | 476 | return t3; |
616915dd | 477 | } |
478 | ||
479 | constraint constraint_makeEnsureGreaterThanEqual (exprNode e1, exprNode e2, fileloc sequencePoint) | |
480 | { | |
bb7c2085 | 481 | return ( constraint_makeEnsuresOp (e1, e2, sequencePoint, GTE)); |
616915dd | 482 | } |
483 | ||
484 | ||
616915dd | 485 | |
2934b455 | 486 | /* Makes the constraint e = e + f */ |
487 | constraint constraint_makeAddAssign (exprNode e, exprNode f, fileloc sequencePoint) | |
488 | { | |
489 | constraintExpr x1, x2, y; | |
490 | constraint ret; | |
491 | ||
bb7c2085 | 492 | ret = constraint_makeNew (); |
2934b455 | 493 | |
494 | x1 = constraintExpr_makeValueExpr (e); | |
bb7c2085 | 495 | x2 = constraintExpr_copy (x1); |
2934b455 | 496 | y = constraintExpr_makeValueExpr (f); |
497 | ||
498 | ret->lexpr = x1; | |
499 | ret->ar = EQ; | |
500 | ret->post = TRUE; | |
501 | ret->expr = constraintExpr_makeAddExpr (x2, y); | |
502 | ||
503 | ret->lexpr = constraintExpr_setFileloc (ret->lexpr, sequencePoint); | |
504 | ||
505 | return ret; | |
506 | } | |
507 | ||
508 | ||
509 | /* Makes the constraint e = e - f */ | |
510 | constraint constraint_makeSubtractAssign (exprNode e, exprNode f, fileloc sequencePoint) | |
511 | { | |
512 | constraintExpr x1, x2, y; | |
513 | constraint ret; | |
514 | ||
bb7c2085 | 515 | ret = constraint_makeNew (); |
2934b455 | 516 | |
517 | x1 = constraintExpr_makeValueExpr (e); | |
bb7c2085 | 518 | x2 = constraintExpr_copy (x1); |
2934b455 | 519 | y = constraintExpr_makeValueExpr (f); |
520 | ||
521 | ret->lexpr = x1; | |
522 | ret->ar = EQ; | |
523 | ret->post = TRUE; | |
524 | ret->expr = constraintExpr_makeSubtractExpr (x2, y); | |
525 | ||
526 | ret->lexpr = constraintExpr_setFileloc (ret->lexpr, sequencePoint); | |
527 | ||
528 | return ret; | |
529 | } | |
530 | ||
616915dd | 531 | constraint constraint_makeMaxSetSideEffectPostDecrement (exprNode e, fileloc sequencePoint) |
532 | { | |
bb7c2085 | 533 | constraint ret = constraint_makeNew (); |
616915dd | 534 | |
616915dd | 535 | ret->lexpr = constraintExpr_makeValueExpr (e); |
536 | ret->ar = EQ; | |
537 | ret->post = TRUE; | |
538 | ret->expr = constraintExpr_makeValueExpr (e); | |
539 | ret->expr = constraintExpr_makeDecConstraintExpr (ret->expr); | |
616915dd | 540 | ret->lexpr = constraintExpr_setFileloc (ret->lexpr, sequencePoint); |
616915dd | 541 | return ret; |
542 | } | |
543 | constraint constraint_makeMaxSetSideEffectPostIncrement (exprNode e, fileloc sequencePoint) | |
544 | { | |
bb7c2085 | 545 | constraint ret = constraint_makeNew (); |
616915dd | 546 | |
616915dd | 547 | ret->lexpr = constraintExpr_makeValueExpr (e); |
548 | ret->ar = EQ; | |
549 | ret->post = TRUE; | |
550 | ret->expr = constraintExpr_makeValueExpr (e); | |
551 | ret->expr = constraintExpr_makeIncConstraintExpr (ret->expr); | |
552 | ||
553 | ret->lexpr = constraintExpr_setFileloc (ret->lexpr, sequencePoint); | |
616915dd | 554 | return ret; |
555 | } | |
556 | ||
557 | ||
920a3797 | 558 | void constraint_free (/*@only@*/ constraint c) |
d46ce6a4 | 559 | { |
6317f163 | 560 | if (constraint_isDefined (c)) |
561 | { | |
562 | constraint_free (c->orig); | |
563 | c->orig = NULL; | |
d46ce6a4 | 564 | |
6317f163 | 565 | constraint_free (c->or); |
566 | c->or = NULL; | |
bb25bea6 | 567 | |
6317f163 | 568 | constraintExpr_free (c->lexpr); |
569 | c->lexpr = NULL; | |
bb25bea6 | 570 | |
6317f163 | 571 | constraintExpr_free (c->expr); |
572 | c->expr = NULL; | |
573 | ||
574 | free (c); | |
575 | } | |
d46ce6a4 | 576 | } |
577 | ||
dc92450f | 578 | cstring arithType_print (arithType ar) /*@*/ |
616915dd | 579 | { |
580 | cstring st = cstring_undefined; | |
581 | switch (ar) | |
582 | { | |
583 | case LT: | |
a779b61e | 584 | st = cstring_makeLiteral ("<"); |
616915dd | 585 | break; |
ae133592 | 586 | case LTE: |
a779b61e | 587 | st = cstring_makeLiteral ("<="); |
616915dd | 588 | break; |
ae133592 | 589 | case GT: |
a779b61e | 590 | st = cstring_makeLiteral (">"); |
616915dd | 591 | break; |
ae133592 | 592 | case GTE: |
a779b61e | 593 | st = cstring_makeLiteral (">="); |
616915dd | 594 | break; |
ae133592 | 595 | case EQ: |
a779b61e | 596 | st = cstring_makeLiteral ("=="); |
616915dd | 597 | break; |
ae133592 | 598 | case NONNEGATIVE: |
a779b61e | 599 | st = cstring_makeLiteral ("NONNEGATIVE"); |
616915dd | 600 | break; |
ae133592 | 601 | case POSITIVE: |
a779b61e | 602 | st = cstring_makeLiteral ("POSITIVE"); |
616915dd | 603 | break; |
604 | default: | |
bb7c2085 | 605 | llassert (FALSE); |
616915dd | 606 | break; |
607 | } | |
608 | return st; | |
609 | } | |
610 | ||
8f299805 | 611 | void constraint_printErrorPostCondition (constraint c, fileloc loc) |
612 | { | |
613 | cstring string; | |
614 | fileloc errorLoc, temp; | |
615 | ||
9a48d98c | 616 | string = constraint_unparseDetailedPostCondition (c); |
8f299805 | 617 | errorLoc = loc; |
8f299805 | 618 | loc = NULL; |
619 | ||
bb7c2085 | 620 | temp = constraint_getFileloc (c); |
9276a168 | 621 | |
ae133592 | 622 | if (context_getFlag (FLG_BOUNDSCOMPACTERRORMESSAGES)) |
9276a168 | 623 | { |
ae133592 | 624 | string = cstring_replaceChar (string, '\n', ' '); |
9276a168 | 625 | } |
626 | ||
bb7c2085 | 627 | if (fileloc_isDefined (temp)) |
8f299805 | 628 | { |
629 | errorLoc = temp; | |
ae133592 | 630 | voptgenerror (FLG_CHECKPOST, string, errorLoc); |
bb7c2085 | 631 | fileloc_free (temp); |
8f299805 | 632 | } |
633 | else | |
634 | { | |
ae133592 | 635 | voptgenerror (FLG_CHECKPOST, string, errorLoc); |
8f299805 | 636 | } |
637 | } | |
638 | ||
f4ec8018 | 639 | /*drl added 8-11-001*/ |
640 | cstring constraint_printLocation (/*@observer@*/ /*@temp@*/ constraint c) /*@*/ | |
641 | { | |
642 | cstring string, ret; | |
643 | fileloc errorLoc; | |
644 | ||
9a48d98c | 645 | string = constraint_unparse (c); |
f4ec8018 | 646 | |
bb7c2085 | 647 | errorLoc = constraint_getFileloc (c); |
f4ec8018 | 648 | |
bb7c2085 | 649 | ret = message ("constraint: %q @ %q", string, fileloc_unparse (errorLoc)); |
bb7c2085 | 650 | fileloc_free (errorLoc); |
f4ec8018 | 651 | return ret; |
652 | ||
653 | } | |
8f299805 | 654 | |
655 | ||
656 | ||
616915dd | 657 | void constraint_printError (constraint c, fileloc loc) |
658 | { | |
659 | cstring string; | |
4ab867d6 | 660 | fileloc errorLoc, temp; |
e5f31c00 | 661 | |
fba0ed37 | 662 | bool isLikely; |
72704d73 | 663 | |
664 | llassert (constraint_isDefined (c) ); | |
665 | ||
e5f31c00 | 666 | /*drl 11/26/2001 avoid printing tautological constraints */ |
bb7c2085 | 667 | if (constraint_isAlwaysTrue (c)) |
e5f31c00 | 668 | { |
669 | return; | |
670 | } | |
671 | ||
672 | ||
9a48d98c | 673 | string = constraint_unparseDetailed (c); |
9280addf | 674 | |
675 | errorLoc = loc; | |
676 | ||
bb7c2085 | 677 | temp = constraint_getFileloc (c); |
4ab867d6 | 678 | |
bb7c2085 | 679 | if (fileloc_isDefined (temp)) |
616915dd | 680 | { |
4ab867d6 | 681 | errorLoc = temp; |
84380658 | 682 | } |
683 | else | |
684 | { | |
bb7c2085 | 685 | llassert (FALSE); |
ae133592 | 686 | DPRINTF (("constraint %s had undefined fileloc %s", |
687 | constraint_unparse (c), fileloc_unparse (temp))); | |
bb7c2085 | 688 | fileloc_free (temp); |
689 | errorLoc = fileloc_copy (errorLoc); | |
84380658 | 690 | } |
9276a168 | 691 | |
692 | ||
ae133592 | 693 | if (context_getFlag (FLG_BOUNDSCOMPACTERRORMESSAGES)) |
9276a168 | 694 | { |
695 | string = cstring_replaceChar(string, '\n', ' '); | |
696 | } | |
697 | ||
fba0ed37 | 698 | /*drl added 12/19/2002 print |
699 | a different error fro "likely" bounds-errors*/ | |
700 | ||
ae133592 | 701 | isLikely = constraint_isConstantOnly (c); |
9276a168 | 702 | |
fba0ed37 | 703 | if (isLikely) |
704 | { | |
705 | if (c->post) | |
706 | { | |
707 | voptgenerror (FLG_FUNCTIONPOST, string, errorLoc); | |
708 | } | |
709 | else | |
710 | { | |
711 | if (constraint_hasMaxSet (c)) | |
712 | { | |
713 | voptgenerror (FLG_LIKELYBOUNDSWRITE, string, errorLoc); | |
714 | } | |
715 | else | |
716 | { | |
717 | voptgenerror (FLG_LIKELYBOUNDSREAD, string, errorLoc); | |
718 | } | |
719 | } | |
720 | } | |
721 | else if (c->post) | |
84380658 | 722 | { |
723 | voptgenerror (FLG_FUNCTIONPOST, string, errorLoc); | |
616915dd | 724 | } |
725 | else | |
726 | { | |
bb7c2085 | 727 | if (constraint_hasMaxSet (c)) |
728 | { | |
729 | voptgenerror (FLG_BOUNDSWRITE, string, errorLoc); | |
730 | } | |
4ab867d6 | 731 | else |
bb7c2085 | 732 | { |
733 | voptgenerror (FLG_BOUNDSREAD, string, errorLoc); | |
734 | } | |
616915dd | 735 | } |
84380658 | 736 | |
86d93ed3 | 737 | fileloc_free(errorLoc); |
616915dd | 738 | } |
739 | ||
9a48d98c | 740 | static cstring constraint_unparseDeep (constraint c) |
616915dd | 741 | { |
28bf4b0b | 742 | cstring genExpr; |
9a48d98c | 743 | cstring st; |
72704d73 | 744 | |
9a48d98c | 745 | llassert (constraint_isDefined (c)); |
746 | st = constraint_unparse (c); | |
28bf4b0b | 747 | |
4ab867d6 | 748 | if (c->orig != constraint_undefined) |
749 | { | |
bb7c2085 | 750 | st = cstring_appendChar (st, '\n'); |
751 | genExpr = exprNode_unparse (c->orig->generatingExpr); | |
752 | ||
4ab867d6 | 753 | if (!c->post) |
754 | { | |
755 | if (c->orig->fcnPre) | |
bb7c2085 | 756 | { |
757 | st = cstring_concatFree (st, message (" derived from %s precondition: %q", | |
9a48d98c | 758 | genExpr, constraint_unparseDeep (c->orig))); |
bb7c2085 | 759 | } |
4ab867d6 | 760 | else |
bb7c2085 | 761 | { |
762 | st = cstring_concatFree (st, message (" needed to satisfy precondition:\n%q", | |
9a48d98c | 763 | constraint_unparseDeep (c->orig))); |
bb7c2085 | 764 | } |
4ab867d6 | 765 | } |
766 | else | |
767 | { | |
bb7c2085 | 768 | st = cstring_concatFree (st, message ("derived from: %q", |
ae133592 | 769 | constraint_unparseDeep (c->orig))); |
4ab867d6 | 770 | } |
771 | } | |
772 | ||
773 | return st; | |
4ab867d6 | 774 | } |
775 | ||
2934b455 | 776 | |
9a48d98c | 777 | static /*@only@*/ cstring constraint_unparseDetailedPostCondition (/*@observer@*/ /*@temp@*/ constraint c) |
8f299805 | 778 | { |
779 | cstring st = cstring_undefined; | |
28bf4b0b | 780 | cstring genExpr; |
72704d73 | 781 | |
782 | llassert (constraint_isDefined (c) ); | |
783 | ||
9a48d98c | 784 | st = message ("Unsatisfied ensures constraint condition:\nSplint is unable to verify the constraint %q", |
785 | constraint_unparseDeep (c)); | |
28bf4b0b | 786 | |
787 | genExpr = exprNode_unparse (c->generatingExpr); | |
788 | ||
bb7c2085 | 789 | if (context_getFlag (FLG_CONSTRAINTLOCATION)) |
8f299805 | 790 | { |
791 | cstring temp; | |
b7b694d6 | 792 | |
793 | temp = message ("\nOriginal Generating expression %q: %s\n", | |
517a2db3 | 794 | fileloc_unparse (exprNode_loc (c->generatingExpr)), |
bb7c2085 | 795 | genExpr); |
8f299805 | 796 | st = cstring_concatFree (st, temp); |
797 | ||
bb7c2085 | 798 | if (constraint_hasMaxSet (c)) |
8f299805 | 799 | { |
800 | temp = message ("Has MaxSet\n"); | |
801 | st = cstring_concatFree (st, temp); | |
802 | } | |
803 | } | |
804 | return st; | |
805 | } | |
806 | ||
9a48d98c | 807 | cstring constraint_unparseDetailed (constraint c) |
4ab867d6 | 808 | { |
809 | cstring st = cstring_undefined; | |
03d670b6 | 810 | cstring temp = cstring_undefined; |
9276a168 | 811 | cstring genExpr; |
fba0ed37 | 812 | bool isLikely; |
72704d73 | 813 | |
6317f163 | 814 | llassert (constraint_isDefined (c)); |
72704d73 | 815 | |
616915dd | 816 | if (!c->post) |
817 | { | |
9a48d98c | 818 | st = message ("Unable to resolve constraint:\n%q", constraint_unparseDeep (c)); |
616915dd | 819 | } |
820 | else | |
821 | { | |
9a48d98c | 822 | st = message ("Block Post condition:\nThis function block has the post condition %q", constraint_unparseDeep (c)); |
616915dd | 823 | } |
9280addf | 824 | |
6317f163 | 825 | isLikely = constraint_isConstantOnly (c); |
fba0ed37 | 826 | |
827 | if (isLikely) | |
03d670b6 | 828 | { |
fba0ed37 | 829 | if (constraint_hasMaxSet (c)) |
830 | { | |
6317f163 | 831 | temp = cstring_makeLiteral ("Likely out-of-bounds store: "); |
fba0ed37 | 832 | } |
833 | else | |
834 | { | |
6317f163 | 835 | temp = cstring_makeLiteral ("Likely out-of-bounds read: "); |
fba0ed37 | 836 | } |
03d670b6 | 837 | } |
838 | else | |
839 | { | |
fba0ed37 | 840 | |
841 | if (constraint_hasMaxSet (c)) | |
842 | { | |
6317f163 | 843 | temp = cstring_makeLiteral ("Possible out-of-bounds store: "); |
fba0ed37 | 844 | } |
845 | else | |
846 | { | |
6317f163 | 847 | temp = cstring_makeLiteral ("Possible out-of-bounds read: "); |
fba0ed37 | 848 | } |
03d670b6 | 849 | } |
03d670b6 | 850 | |
28bf4b0b | 851 | genExpr = exprNode_unparse (c->generatingExpr); |
7bf96067 | 852 | |
bb7c2085 | 853 | if (context_getFlag (FLG_CONSTRAINTLOCATION)) |
9280addf | 854 | { |
7bf96067 | 855 | cstring temp2; |
bb7c2085 | 856 | temp2 = message ("%s\n", genExpr); |
7bf96067 | 857 | temp = cstring_concatFree (temp, temp2); |
9280addf | 858 | } |
7bf96067 | 859 | |
bb7c2085 | 860 | st = cstring_concatFree (temp,st); |
7bf96067 | 861 | |
616915dd | 862 | return st; |
863 | } | |
864 | ||
ae133592 | 865 | /*@only@*/ cstring constraint_unparse (constraint c) /*@*/ |
616915dd | 866 | { |
867 | cstring st = cstring_undefined; | |
868 | cstring type = cstring_undefined; | |
dc92450f | 869 | llassert (c !=NULL); |
616915dd | 870 | if (c->post) |
871 | { | |
bb7c2085 | 872 | if (context_getFlag (FLG_PARENCONSTRAINT)) |
a779b61e | 873 | { |
874 | type = cstring_makeLiteral ("ensures: "); | |
875 | } | |
876 | else | |
877 | { | |
878 | type = cstring_makeLiteral ("ensures"); | |
879 | } | |
616915dd | 880 | } |
881 | else | |
882 | { | |
bb7c2085 | 883 | if (context_getFlag (FLG_PARENCONSTRAINT)) |
a779b61e | 884 | { |
885 | type = cstring_makeLiteral ("requires: "); | |
886 | } | |
887 | else | |
888 | { | |
889 | type = cstring_makeLiteral ("requires"); | |
890 | } | |
891 | ||
616915dd | 892 | } |
bb7c2085 | 893 | if (context_getFlag (FLG_PARENCONSTRAINT)) |
a779b61e | 894 | { |
895 | st = message ("%q: %q %q %q", | |
896 | type, | |
897 | constraintExpr_print (c->lexpr), | |
bb7c2085 | 898 | arithType_print (c->ar), |
9a48d98c | 899 | constraintExpr_print (c->expr)); |
a779b61e | 900 | } |
901 | else | |
902 | { | |
903 | st = message ("%q %q %q %q", | |
904 | type, | |
905 | constraintExpr_print (c->lexpr), | |
bb7c2085 | 906 | arithType_print (c->ar), |
9a48d98c | 907 | constraintExpr_print (c->expr)); |
a779b61e | 908 | } |
616915dd | 909 | return st; |
910 | } | |
911 | ||
9a48d98c | 912 | cstring constraint_unparseOr (constraint c) /*@*/ |
90bc41f7 | 913 | { |
914 | cstring ret; | |
915 | constraint temp; | |
916 | ||
917 | ret = cstring_undefined; | |
72704d73 | 918 | |
919 | llassert (constraint_isDefined (c) ); | |
920 | ||
90bc41f7 | 921 | temp = c; |
922 | ||
9a48d98c | 923 | ret = cstring_concatFree (ret, constraint_unparse (temp)); |
90bc41f7 | 924 | |
925 | temp = temp->or; | |
926 | ||
bb7c2085 | 927 | while ( constraint_isDefined (temp)) |
90bc41f7 | 928 | { |
bb7c2085 | 929 | ret = cstring_concatFree (ret, cstring_makeLiteral (" OR ")); |
9a48d98c | 930 | ret = cstring_concatFree (ret, constraint_unparse (temp)); |
90bc41f7 | 931 | temp = temp->or; |
932 | } | |
933 | ||
934 | return ret; | |
935 | ||
936 | } | |
937 | ||
dc92450f | 938 | /*@only@*/ constraint constraint_doSRefFixBaseParam (/*@returned@*/ /*@only@*/ constraint precondition, |
616915dd | 939 | exprNodeList arglist) |
940 | { | |
72704d73 | 941 | |
942 | llassert (constraint_isDefined (precondition) ); | |
943 | ||
616915dd | 944 | precondition->lexpr = constraintExpr_doSRefFixBaseParam (precondition->lexpr, |
945 | arglist); | |
946 | precondition->expr = constraintExpr_doSRefFixBaseParam (precondition->expr, | |
947 | arglist); | |
948 | ||
949 | return precondition; | |
950 | } | |
951 | ||
952 | ||
28bf4b0b | 953 | constraint constraint_doFixResult (constraint postcondition, /*@dependent@*/ exprNode fcnCall) |
616915dd | 954 | { |
955 | postcondition = constraint_copy (postcondition); | |
72704d73 | 956 | |
957 | llassert (constraint_isDefined (postcondition) ); | |
958 | ||
959 | ||
616915dd | 960 | postcondition->lexpr = constraintExpr_doFixResult (postcondition->lexpr, fcnCall); |
961 | postcondition->expr = constraintExpr_doFixResult (postcondition->expr, fcnCall); | |
962 | ||
963 | return postcondition; | |
964 | } | |
86d93ed3 | 965 | /*Commenting out temporally |
966 | ||
967 | / *@only@* /constraint constraint_doSRefFixInvarConstraint(constraint invar, sRef s, ctype ct ) | |
968 | { | |
969 | ||
970 | invar = constraint_copy (invar); | |
971 | invar->lexpr = constraintExpr_doSRefFixInvarConstraint (invar->lexpr, s, ct); | |
972 | invar->expr = constraintExpr_doSRefFixInvarConstraint (invar->expr, s, ct); | |
973 | ||
974 | return invar; | |
975 | } | |
976 | */ | |
616915dd | 977 | |
d46ce6a4 | 978 | /*@only@*/ constraint constraint_doSRefFixConstraintParam (constraint precondition, |
616915dd | 979 | exprNodeList arglist) |
980 | { | |
981 | ||
982 | precondition = constraint_copy (precondition); | |
72704d73 | 983 | |
984 | llassert (constraint_isDefined (precondition) ); | |
985 | ||
616915dd | 986 | precondition->lexpr = constraintExpr_doSRefFixConstraintParam (precondition->lexpr, arglist); |
987 | precondition->expr = constraintExpr_doSRefFixConstraintParam (precondition->expr, arglist); | |
988 | ||
4ab867d6 | 989 | precondition->fcnPre = FALSE; |
d9daf826 | 990 | return constraint_simplify(precondition); |
616915dd | 991 | } |
992 | ||
d46ce6a4 | 993 | constraint constraint_preserveOrig (/*@returned@*/ constraint c) /*@modifies c @*/ |
616915dd | 994 | { |
6317f163 | 995 | if (constraint_isDefined (c)) |
9a48d98c | 996 | { |
6317f163 | 997 | DPRINTF (("Doing constraint_preserverOrig for %q", constraint_printDetailed (c))); |
4ab867d6 | 998 | |
6317f163 | 999 | if (c->orig == constraint_undefined) |
1000 | { | |
1001 | c->orig = constraint_copy (c); | |
1002 | } | |
1003 | else if (c->orig->fcnPre) | |
920a3797 | 1004 | { |
6317f163 | 1005 | constraint temp = c->orig; |
1006 | ||
1007 | /* avoid infinite loop */ | |
1008 | c->orig = NULL; | |
1009 | c->orig = constraint_copy (c); | |
1010 | /*drl 03/2/2003 if c != NULL then the copy of c will != null*/ | |
1011 | llassert (constraint_isDefined (c->orig) ); | |
1012 | ||
1013 | if (c->orig->orig == NULL) | |
1014 | { | |
1015 | c->orig->orig = temp; | |
1016 | temp = NULL; | |
1017 | } | |
1018 | else | |
1019 | { | |
1020 | llcontbug ((message ("Expected c->orig->orig to be null"))); | |
1021 | constraint_free (c->orig->orig); | |
1022 | c->orig->orig = temp; | |
1023 | temp = NULL; | |
1024 | } | |
920a3797 | 1025 | } |
4ab867d6 | 1026 | else |
920a3797 | 1027 | { |
6317f163 | 1028 | DPRINTF (("Not changing constraint")); |
920a3797 | 1029 | } |
4ab867d6 | 1030 | } |
6317f163 | 1031 | |
9a48d98c | 1032 | DPRINTF ((message ("After Doing constraint_preserverOrig for %q ", constraint_unparseDetailed (c)))); |
616915dd | 1033 | return c; |
1034 | } | |
2934b455 | 1035 | |
84c9ffbf | 1036 | constraint constraint_togglePost (/*@returned@*/ constraint c) |
1037 | { | |
9a48d98c | 1038 | llassert (constraint_isDefined (c)); |
84c9ffbf | 1039 | c->post = !c->post; |
1040 | return c; | |
1041 | } | |
2934b455 | 1042 | |
1043 | constraint constraint_togglePostOrig (/*@returned@*/ constraint c) | |
1044 | { | |
9a48d98c | 1045 | llassert (constraint_isDefined (c)); |
72704d73 | 1046 | |
2934b455 | 1047 | if (c->orig != NULL) |
9a48d98c | 1048 | { |
1049 | c->orig = constraint_togglePost (c->orig); | |
1050 | } | |
1051 | ||
2934b455 | 1052 | return c; |
1053 | } | |
1054 | ||
bb7c2085 | 1055 | bool constraint_hasOrig ( /*@observer@*/ /*@temp@*/ constraint c) |
2934b455 | 1056 | { |
9a48d98c | 1057 | llassert (constraint_isDefined (c)); |
1058 | return (c->orig != NULL); | |
2934b455 | 1059 | } |
920a3797 | 1060 | |
1061 | ||
1062 | constraint constraint_undump (FILE *f) | |
1063 | { | |
1064 | constraint c; | |
9a48d98c | 1065 | bool fcnPre, post; |
1066 | arithType ar; | |
1067 | constraintExpr lexpr, expr; | |
1068 | char *s, *os; | |
920a3797 | 1069 | |
3be9a165 | 1070 | os = mstring_create (MAX_DUMP_LINE_LENGTH); |
bb7c2085 | 1071 | s = fgets (os, MAX_DUMP_LINE_LENGTH, f); |
920a3797 | 1072 | |
9a48d98c | 1073 | if (!mstring_isDefined (s)) |
72704d73 | 1074 | { |
9a48d98c | 1075 | llfatalbug (message ("Library file is corrupted") ); |
72704d73 | 1076 | } |
920a3797 | 1077 | |
28bf4b0b | 1078 | fcnPre = (bool) reader_getInt (&s); |
bb7c2085 | 1079 | advanceField (&s); |
28bf4b0b | 1080 | post = (bool) reader_getInt (&s); |
bb7c2085 | 1081 | advanceField (&s); |
28bf4b0b | 1082 | ar = (arithType) reader_getInt (&s); |
9a48d98c | 1083 | |
bb7c2085 | 1084 | s = fgets (os, MAX_DUMP_LINE_LENGTH, f); |
920a3797 | 1085 | |
72704d73 | 1086 | if (! mstring_isDefined(s) ) |
1087 | { | |
1088 | llfatalbug(message("Library file is corrupted") ); | |
1089 | } | |
1090 | ||
28bf4b0b | 1091 | reader_checkChar (&s, 'l'); |
920a3797 | 1092 | |
1093 | lexpr = constraintExpr_undump (f); | |
1094 | ||
bb7c2085 | 1095 | s = fgets (os, MAX_DUMP_LINE_LENGTH, f); |
920a3797 | 1096 | |
28bf4b0b | 1097 | reader_checkChar (&s, 'r'); |
72704d73 | 1098 | |
1099 | if (! mstring_isDefined(s) ) | |
1100 | { | |
1101 | llfatalbug(message("Library file is corrupted") ); | |
1102 | } | |
1103 | ||
920a3797 | 1104 | expr = constraintExpr_undump (f); |
1105 | ||
bb7c2085 | 1106 | c = constraint_makeNew (); |
920a3797 | 1107 | |
1108 | c->fcnPre = fcnPre; | |
1109 | c->post = post; | |
1110 | c->ar = ar; | |
1111 | ||
1112 | c->lexpr = lexpr; | |
1113 | c->expr = expr; | |
1114 | ||
bb7c2085 | 1115 | free (os); |
1116 | c = constraint_preserveOrig (c); | |
920a3797 | 1117 | return c; |
1118 | } | |
1119 | ||
1120 | ||
1121 | void constraint_dump (/*@observer@*/ constraint c, FILE *f) | |
1122 | { | |
1123 | bool fcnPre; | |
1124 | bool post; | |
1125 | arithType ar; | |
1126 | ||
1127 | constraintExpr lexpr; | |
1128 | constraintExpr expr; | |
28bf4b0b | 1129 | |
72704d73 | 1130 | llassert (constraint_isDefined (c) ); |
1131 | ||
920a3797 | 1132 | fcnPre = c->fcnPre; |
1133 | post = c->post; | |
1134 | ar = c->ar; | |
1135 | lexpr = c->lexpr; | |
1136 | expr = c->expr; | |
1137 | ||
bb7c2085 | 1138 | fprintf (f, "%d@%d@%d\n", (int) fcnPre, (int) post, (int) ar); |
1139 | fprintf (f,"l\n"); | |
920a3797 | 1140 | constraintExpr_dump (lexpr, f); |
bb7c2085 | 1141 | fprintf (f,"r\n"); |
920a3797 | 1142 | constraintExpr_dump (expr, f); |
1143 | } | |
1144 | ||
1145 | ||
f4ec8018 | 1146 | int constraint_compare (/*@observer@*/ /*@temp@*/ const constraint * c1, /*@observer@*/ /*@temp@*/ const constraint * c2) /*@*/ |
02984642 | 1147 | { |
1148 | fileloc loc1, loc2; | |
1149 | ||
1150 | int ret; | |
1151 | ||
bb7c2085 | 1152 | llassert (constraint_isDefined (*c1)); |
1153 | llassert (constraint_isDefined (*c2)); | |
02984642 | 1154 | |
bb7c2085 | 1155 | if (constraint_isUndefined (*c1)) |
02984642 | 1156 | { |
bb7c2085 | 1157 | if (constraint_isUndefined (*c2)) |
02984642 | 1158 | return 0; |
1159 | else | |
1160 | return 1; | |
1161 | } | |
1162 | ||
bb7c2085 | 1163 | if (constraint_isUndefined (*c2)) |
02984642 | 1164 | { |
1165 | return -1; | |
1166 | } | |
1167 | ||
bb7c2085 | 1168 | loc1 = constraint_getFileloc (*c1); |
1169 | loc2 = constraint_getFileloc (*c2); | |
02984642 | 1170 | |
bb7c2085 | 1171 | ret = fileloc_compare (loc1, loc2); |
02984642 | 1172 | |
bb7c2085 | 1173 | fileloc_free (loc1); |
1174 | fileloc_free (loc2); | |
02984642 | 1175 | |
1176 | return ret; | |
1177 | } | |
1178 | ||
1179 | ||
84380658 | 1180 | bool constraint_isPost (/*@observer@*/ /*@temp@*/ constraint c) |
1181 | { | |
bb7c2085 | 1182 | llassert (constraint_isDefined (c)); |
84380658 | 1183 | |
bb7c2085 | 1184 | if (constraint_isUndefined (c)) |
84380658 | 1185 | return FALSE; |
1186 | ||
1187 | return (c->post); | |
1188 | } | |
a779b61e | 1189 | |
1190 | ||
bb7c2085 | 1191 | static int constraint_getDepth (/*@observer@*/ /*@temp@*/ constraint c) |
a779b61e | 1192 | { |
1193 | int l , r; | |
72704d73 | 1194 | |
1195 | llassert (constraint_isDefined (c) ); | |
1196 | ||
bb7c2085 | 1197 | l = constraintExpr_getDepth (c->lexpr); |
1198 | r = constraintExpr_getDepth (c->expr); | |
a779b61e | 1199 | |
1200 | if (l > r) | |
1201 | { | |
9a48d98c | 1202 | DPRINTF (( message ("constraint depth returning %d for %s", l, constraint_unparse (c)))); |
a779b61e | 1203 | return l; |
1204 | } | |
1205 | else | |
1206 | { | |
9a48d98c | 1207 | DPRINTF (( message ("constraint depth returning %d for %s", r, constraint_unparse (c)))); |
a779b61e | 1208 | return r; |
1209 | } | |
1210 | } | |
1211 | ||
1212 | ||
1213 | bool constraint_tooDeep (/*@observer@*/ /*@temp@*/ constraint c) | |
1214 | { | |
1215 | int temp; | |
1216 | ||
bb7c2085 | 1217 | temp = constraint_getDepth (c); |
a779b61e | 1218 | |
bb7c2085 | 1219 | if (temp >= 20) |
a779b61e | 1220 | { |
1221 | return TRUE; | |
1222 | } | |
1223 | ||
1224 | return FALSE; | |
1225 | ||
1226 | } | |
fba0ed37 | 1227 | |
1228 | /*drl added 12/19/2002*/ | |
1229 | /*whether constraints consist only of | |
1230 | terms which are constants*/ | |
1231 | bool constraint_isConstantOnly (constraint c) | |
1232 | { | |
1233 | bool l, r; | |
72704d73 | 1234 | |
1235 | llassert (constraint_isDefined (c) ); | |
1236 | ||
fba0ed37 | 1237 | l = constraintExpr_isConstantOnly(c->lexpr); |
1238 | r = constraintExpr_isConstantOnly(c->expr); | |
1239 | ||
1240 | if (l && r) | |
1241 | { | |
1242 | return TRUE; | |
1243 | } | |
1244 | ||
1245 | else | |
1246 | { | |
1247 | return FALSE; | |
1248 | } | |
1249 | ||
1250 | } |