3 ** constraintGeneration.c
8 # include <ctype.h> /* for isdigit */
9 # include "lclintMacros.nf"
11 # include "cgrammar.h"
12 # include "cgrammar_tokens.h"
14 # include "exprChecks.h"
15 # include "aliasChecks.h"
16 # include "exprNodeSList.h"
18 # include "exprData.i"
19 # include "exprDataQuite.i"
21 /*@access exprNode @*/
23 extern void forLoopHeuristics( exprNode e, exprNode forPred, exprNode forBody);
25 bool /*@alt void@*/ exprNode_generateConstraints (/*@temp@*/ exprNode e);
26 static bool exprNode_handleError( exprNode p_e);
28 //static cstring exprNode_findConstraints ( exprNode p_e);
29 static bool exprNode_isMultiStatement(exprNode p_e);
30 static void exprNode_multiStatement (exprNode p_e);
32 //static void exprNode_constraintPropagateUp (exprNode p_e);
34 constraintList exprNode_traversTrueEnsuresConstraints (exprNode e);
35 constraintList exprNode_traversFalseEnsuresConstraints (exprNode e);
37 void mergeResolve (exprNode parent, exprNode child1, exprNode child2);
38 exprNode makeDataTypeConstraints (exprNode e);
39 constraintList constraintList_makeFixedArrayConstraints (sRefSet s);
40 constraintList checkCall (exprNode fcn, exprNodeList arglist);
42 void checkArgumentList (exprNode temp, exprNodeList arglist, fileloc sequencePoint);
44 //bool exprNode_testd()
46 /* if ( ( (exprNode_isError ) ) )
55 bool exprNode_isUnhandled (exprNode e)
57 llassert( exprNode_isDefined(e) );
86 DPRINTF((message ("Warning current constraint generation does not handle expression %s", exprNode_unparse(e)) ) );
98 bool exprNode_handleError( exprNode e)
100 if (exprNode_isError (e) || exprNode_isUnhandled(e) )
102 static /*@only@*/ cstring error = cstring_undefined;
104 if (!cstring_isDefined (error))
106 error = cstring_makeLiteral ("<error>");
109 /*@-unqualifiedtrans*/ return TRUE; /*@=unqualifiedtrans*/
114 bool /*@alt void@*/ exprNode_generateConstraints (/*@temp@*/ exprNode e)
116 if (exprNode_isError (e) )
119 e->requiresConstraints = constraintList_makeNew();
120 e->ensuresConstraints = constraintList_makeNew();
121 e->trueEnsuresConstraints = constraintList_makeNew();
122 e->falseEnsuresConstraints = constraintList_makeNew();
124 if (exprNode_isUnhandled (e) )
126 DPRINTF( (message("Warning ignoring %s", exprNode_unparse (e) ) ) );
131 // e = makeDataTypeConstraints (e);
133 DPRINTF((message ("exprNode_generateConstraints Analysising %s at %s", exprNode_unparse( e),
134 fileloc_unparse(exprNode_getfileloc(e) ) ) ) );
136 if (exprNode_isMultiStatement ( e) )
138 exprNode_multiStatement(e);
144 loc = exprNode_getNextSequencePoint(e);
145 exprNode_exprTraverse(e, FALSE, FALSE, loc);
154 c = constraintList_makeFixedArrayConstraints (e->uses);
155 e->requiresConstraints = reflectChanges (e->requiresConstraints, c);
157 // e->ensuresConstraints = constraintList_mergeEnsures(c, e->ensuresConstraints);
161 /* printf ("%s", (message ("%s", constraintList_printDetailed (e->requiresConstraints) ) ) );
162 printf ("%s", (message ("%s", constraintList_printDetailed (e->ensuresConstraints) ) ) ); */
167 /* handles multiple statements */
169 bool exprNode_isMultiStatement(exprNode e)
171 if (exprNode_handleError (e) != NULL)
193 void exprNode_stmt (exprNode e)
199 if (exprNode_isError(e) )
203 e->requiresConstraints = constraintList_makeNew();
204 e->ensuresConstraints = constraintList_makeNew();
205 // e = makeDataTypeConstraints(e);
208 DPRINTF(( "STMT:") );
209 s = exprNode_unparse(e);
210 // DPRINTF ( ( message("STMT: %s ") ) );
212 if (e->kind == XPR_INIT)
215 DPRINTF ( (message ("%s ", exprNode_unparse (e)) ) );
216 loc = exprNode_getNextSequencePoint(e); /* reduces to an expression */
217 exprNode_exprTraverse (e, FALSE, FALSE, loc);
218 e->requiresConstraints = exprNode_traversRequiresConstraints(e);
219 e->ensuresConstraints = exprNode_traversEnsuresConstraints(e);
223 if (e->kind != XPR_STMT)
226 DPRINTF (("Not Stmt") );
227 DPRINTF ( (message ("%s ", exprNode_unparse (e)) ) );
228 if (exprNode_isMultiStatement (e) )
230 return exprNode_multiStatement (e );
232 DPRINTF( (message ("Ignoring non-statement %s", exprNode_unparse(e) ) ) );
238 DPRINTF ( (message ("%s ", exprNode_unparse (e)) ) );
240 snode = exprData_getUopNode (e->edata);
242 /* could be stmt involving multiple statements:
243 i.e. if, while for ect.
246 if (exprNode_isMultiStatement (snode))
248 exprNode_multiStatement (snode);
249 (void) exprNode_copyConstraints (e, snode);
253 loc = exprNode_getNextSequencePoint(e); /* reduces to an expression */
255 exprNode_exprTraverse (snode, FALSE, FALSE, loc);
256 e->requiresConstraints = exprNode_traversRequiresConstraints(snode);
257 // printf ("For: %s \n", exprNode_unparse (e) );
258 // printf ("%s\n", constraintList_print(e->requiresConstraints) );
259 e->ensuresConstraints = exprNode_traversEnsuresConstraints(snode);
260 // printf ("Ensures that:\n %s\n", constraintList_print(e->ensuresConstraints) );
261 // llassert(notError);
267 void exprNode_stmtList (exprNode e)
269 exprNode stmt1, stmt2;
270 if (exprNode_isError (e) )
275 e->requiresConstraints = constraintList_makeNew();
276 e->ensuresConstraints = constraintList_makeNew();
277 // e = makeDataTypeConstraints(e);
279 /*Handle case of stmtList with only one statement:
280 The parse tree stores this as stmt instead of stmtList*/
281 if (e->kind != XPR_STMTLIST)
286 llassert (e->kind == XPR_STMTLIST);
287 DPRINTF(( "STMTLIST:") );
288 DPRINTF ((cstring_toCharsSafe (exprNode_unparse(e)) ) );
289 stmt1 = exprData_getPairA (e->edata);
290 stmt2 = exprData_getPairB (e->edata);
293 DPRINTF((" stmtlist ") );
294 DPRINTF ((message("XW%s | %s", exprNode_unparse(stmt1), exprNode_unparse(stmt2) ) ) );
296 exprNode_stmt (stmt1);
297 DPRINTF(("\nstmt after stmtList call " ));
299 exprNode_stmt (stmt2);
300 mergeResolve (e, stmt1, stmt2 );
302 DPRINTF ( (message ("smtlist constraints are: pre: %s \n and \t post %s\n",
303 constraintList_print(e->requiresConstraints),
304 constraintList_print(e->ensuresConstraints) ) ) );
308 exprNode doIf (exprNode e, exprNode test, exprNode body)
310 DPRINTF ((message ("doIf: %s ", exprNode_unparse(e) ) ) );
312 llassert(exprNode_isDefined(test) );
313 llassert (exprNode_isDefined (e) );
314 llassert (exprNode_isDefined (body) );
316 test->ensuresConstraints = exprNode_traversEnsuresConstraints (test);
317 test->requiresConstraints = exprNode_traversRequiresConstraints (test);
319 test->trueEnsuresConstraints = exprNode_traversTrueEnsuresConstraints(test);
321 test->trueEnsuresConstraints = constraintList_substitute(test->trueEnsuresConstraints, test->ensuresConstraints);
323 DPRINTF ((message ("doIf: test ensures %s ", constraintList_print(test->ensuresConstraints) ) ) );
325 DPRINTF ((message ("doIf: test true ensures %s ", constraintList_print(test->trueEnsuresConstraints) ) ) );
327 e->requiresConstraints = reflectChanges (body->requiresConstraints, test->trueEnsuresConstraints);
328 e->requiresConstraints = reflectChanges (e->requiresConstraints,
329 test->ensuresConstraints);
330 e->requiresConstraints = constraintList_mergeRequires (e->requiresConstraints, test->requiresConstraints);
333 e->ensuresConstraints = constraintList_copy (test->ensuresConstraints);
335 if (exprNode_mayEscape (body) )
337 DPRINTF (( message("doIf: the if statement body %s returns or exits", exprNode_unparse(body) ) ));
338 e->ensuresConstraints = constraintList_mergeEnsures (e->ensuresConstraints,
339 test->falseEnsuresConstraints);
342 DPRINTF ((message ("doIf: if requiers %s ", constraintList_print(e->requiresConstraints) ) ) );
348 Also used for condition i.e. ?: operation
351 This function assumes that p, trueBranch, falseBranch have have all been traversed
352 for constraints i.e. we assume that exprNode_traversEnsuresConstraints,
353 exprNode_traversRequiresConstraints, exprNode_traversTrueEnsuresConstraints,
354 exprNode_traversFalseEnsuresConstraints have all been run
358 exprNode doIfElse (/*@returned@*/ exprNode e, exprNode p, exprNode trueBranch, exprNode falseBranch)
361 constraintList c1, cons, t, f;
363 // do requires clauses
364 c1 = constraintList_copy (p->ensuresConstraints);
366 t = reflectChanges (trueBranch->requiresConstraints, p->trueEnsuresConstraints);
367 t = reflectChanges (t, p->ensuresConstraints);
369 // e->requiresConstraints = constraintList_copy (cons);
371 cons = reflectChanges (falseBranch->requiresConstraints, p->falseEnsuresConstraints);
372 cons = reflectChanges (cons, c1);
374 e->requiresConstraints = constraintList_mergeRequires (t, cons);
375 e->requiresConstraints = constraintList_mergeRequires (e->requiresConstraints, p->requiresConstraints);
377 // do ensures clauses
378 // find the the ensures lists for each subbranch
379 t = constraintList_mergeEnsures (p->trueEnsuresConstraints, trueBranch->ensuresConstraints);
380 t = constraintList_mergeEnsures (p->ensuresConstraints, t);
382 f = constraintList_mergeEnsures (p->falseEnsuresConstraints, falseBranch->ensuresConstraints);
383 f = constraintList_mergeEnsures (p->ensuresConstraints, f);
385 // find ensures for whole if/else statement
387 e->ensuresConstraints = constraintList_logicalOr (t, f);
392 exprNode doWhile (exprNode e, exprNode test, exprNode body)
394 DPRINTF ((message ("doWhile: %s ", exprNode_unparse(e) ) ) );
395 return doIf (e, test, body);
398 constraintList constraintList_makeFixedArrayConstraints (sRefSet s)
402 ret = constraintList_makeNew();
404 sRefSet_elements (s, el)
407 if (sRef_isFixedArray(el) )
410 DPRINTF( (message("%s is a fixed array",
411 sRef_unparse(el)) ) );
412 //if (el->kind == SK_DERIVED)
413 // break; //hack until I find the real problem
414 size = sRef_getArraySize(el);
415 DPRINTF( (message("%s is a fixed array with size %d",
416 sRef_unparse(el), (int)size) ) );
417 con = constraint_makeSRefSetBufferSize (el, (size - 1));
418 //con = constraint_makeSRefWriteSafeInt (el, (size - 1));
419 ret = constraintList_add(ret, con);
423 DPRINTF( (message("%s is not a fixed array",
424 sRef_unparse(el)) ) );
427 if (sRef_isExternallyVisible (el) )
429 /*DPRINTF( (message("%s is externally visible",
430 sRef_unparse(el) ) ));
431 con = constraint_makeSRefWriteSafeInt(el, 0);
432 ret = constraintList_add(ret, con);
434 con = constraint_makeSRefReadSafeInt(el, 0);
436 ret = constraintList_add(ret, con);*/
442 DPRINTF(( message("constraintList_makeFixedArrayConstraints returning %s",
443 constraintList_print(ret) ) ));
447 exprNode makeDataTypeConstraints (exprNode e)
450 DPRINTF(("makeDataTypeConstraints"));
452 c = constraintList_makeFixedArrayConstraints (e->uses);
454 e->ensuresConstraints = constraintList_addList (e->ensuresConstraints, c);
459 void doFor (exprNode e, exprNode forPred, exprNode forBody)
461 exprNode init, test, inc;
462 //merge the constraints: modle as if statement
467 init = exprData_getTripleInit (forPred->edata);
468 test = exprData_getTripleTest (forPred->edata);
469 inc = exprData_getTripleInc (forPred->edata);
471 if ( ( (exprNode_isError (test) /*|| (exprNode_isError(init) )*/ ) || (exprNode_isError (inc) ) ) )
473 DPRINTF ((message ("strange for statement:%s, ignoring it", exprNode_unparse(e) ) ) );
477 forLoopHeuristics(e, forPred, forBody);
479 e->requiresConstraints = reflectChanges (forBody->requiresConstraints, test->ensuresConstraints);
480 e->requiresConstraints = reflectChanges (e->requiresConstraints, test->trueEnsuresConstraints);
481 e->requiresConstraints = reflectChanges (e->requiresConstraints, forPred->ensuresConstraints);
483 if (!forBody->canBreak)
485 e->ensuresConstraints = constraintList_addList(e->ensuresConstraints, forPred->ensuresConstraints);
486 e->ensuresConstraints = constraintList_addList(e->ensuresConstraints, test->falseEnsuresConstraints);
487 forPred->ensuresConstraints = constraintList_undefined;
488 test->falseEnsuresConstraints = constraintList_undefined;
492 DPRINTF(("Can break") );
497 exprNode doSwitch (/*@returned@*/ exprNode e)
504 //DPRINTF (( message ("doSwitch for: switch (%s) %s",
505 // exprNode_unparse (exprData_getPairA (data)),
506 // exprNode_unparse (exprData_getPairB (data))) ));
508 body = exprData_getPairB (data);
510 // exprNode_generateConstraints(body);
512 // e->requiresConstraints = constraintList_copy ( body->requiresConstraints );
513 //e->ensuresConstraints = constraintList_copy ( body->ensuresConstraints );
519 void exprNode_multiStatement (exprNode e)
525 exprNode p, trueBranch, falseBranch;
526 exprNode forPred, forBody;
528 // constraintList t, f;
529 e->requiresConstraints = constraintList_makeNew();
530 e->ensuresConstraints = constraintList_makeNew();
531 e->trueEnsuresConstraints = constraintList_makeNew();
532 e->falseEnsuresConstraints = constraintList_makeNew();
534 // e = makeDataTypeConstraints(e);
536 DPRINTF((message ("exprNode_multistatement Analysising %s %s at", exprNode_unparse( e),
537 fileloc_unparse(exprNode_getfileloc(e) ) ) ) );
539 if (exprNode_handleError (e))
552 // ret = message ("%s %s",
553 forPred = exprData_getPairA (data);
554 forBody = exprData_getPairB (data);
556 //first generate the constraints
557 exprNode_generateConstraints (forPred);
558 exprNode_generateConstraints (forBody);
561 doFor (e, forPred, forBody);
566 // ret = message ("for (%s; %s; %s)",
567 exprNode_generateConstraints (exprData_getTripleInit (data) );
568 test = exprData_getTripleTest (data);
569 exprNode_exprTraverse (test,FALSE, FALSE, exprNode_loc(e));
570 exprNode_generateConstraints (exprData_getTripleInc (data) );
572 if (!exprNode_isError(test) )
573 test->trueEnsuresConstraints = exprNode_traversTrueEnsuresConstraints(test);
575 exprNode_generateConstraints (exprData_getTripleInc (data));
579 e1 = exprData_getPairA (data);
580 e2 = exprData_getPairB (data);
582 exprNode_exprTraverse (e1,
583 FALSE, FALSE, exprNode_loc(e1));
585 exprNode_generateConstraints (e2);
587 e = doWhile (e, e1, e2);
593 DPRINTF ((exprNode_unparse(e) ) );
594 // ret = message ("if (%s) %s",
595 e1 = exprData_getPairA (data);
596 e2 = exprData_getPairB (data);
598 exprNode_exprTraverse (e1,
599 FALSE, FALSE, exprNode_loc(e1));
601 exprNode_generateConstraints (e2);
603 e = doIf (e, e1, e2);
606 // e->constraints = constraintList_exprNodemerge (exprData_getPairA (data),exprData_getPairB(data));
611 DPRINTF(("Starting IFELSE"));
612 // ret = message ("if (%s) %s else %s",
613 p = exprData_getTriplePred (data);
614 trueBranch = exprData_getTripleTrue (data);
615 falseBranch = exprData_getTripleFalse (data);
617 exprNode_exprTraverse (p,
618 FALSE, FALSE, exprNode_loc(p));
619 exprNode_generateConstraints (trueBranch);
620 exprNode_generateConstraints (falseBranch);
622 p->ensuresConstraints = exprNode_traversEnsuresConstraints (p);
623 p->requiresConstraints = exprNode_traversRequiresConstraints (p);
625 p->trueEnsuresConstraints = exprNode_traversTrueEnsuresConstraints(p);
626 p->falseEnsuresConstraints = exprNode_traversFalseEnsuresConstraints(p);
628 e = doIfElse (e, p, trueBranch, falseBranch);
629 DPRINTF( ("Done IFELSE") );
634 e2 = (exprData_getPairB (data));
635 e1 = (exprData_getPairA (data));
637 DPRINTF((message ("do { %s } while (%s)", exprNode_unparse(e2), exprNode_unparse(e1) ) ));
638 exprNode_generateConstraints (e2);
639 exprNode_generateConstraints (e1);
640 e = exprNode_copyConstraints (e, e2);
641 DPRINTF ((message ("e = %s ", constraintList_print(e->requiresConstraints) ) ));
646 // ret = message ("{ %s }",
647 exprNode_generateConstraints (exprData_getSingle (data));
648 e->requiresConstraints = constraintList_copy ( (exprData_getSingle (data))->requiresConstraints );
649 e->ensuresConstraints = constraintList_copy ( (exprData_getSingle (data))->ensuresConstraints );
650 // e->constraints = (exprData_getSingle (data))->constraints;
658 exprNode_stmtList (e);
668 bool lltok_isBoolean_Op (lltok tok)
670 /*this should really be a switch statement but
671 I don't want to violate the abstraction
672 maybe this should go in lltok.c */
674 if (lltok_isEq_Op (tok) )
678 if (lltok_isAnd_Op (tok) )
684 if (lltok_isOr_Op (tok) )
689 if (lltok_isGt_Op (tok) )
693 if (lltok_isLt_Op (tok) )
698 if (lltok_isLe_Op (tok) )
703 if (lltok_isGe_Op (tok) )
713 void exprNode_booleanTraverse (exprNode e, /*@unused@*/ bool definatelv, /*@unused@*/ bool definaterv, fileloc sequencePoint)
719 constraintList tempList;
722 tok = exprData_getOpTok (data);
725 t1 = exprData_getOpA (data);
726 t2 = exprData_getOpB (data);
729 /* arithmetic tests */
731 if (lltok_isEq_Op (tok) )
733 cons = constraint_makeEnsureEqual (t1, t2, sequencePoint);
734 e->trueEnsuresConstraints = constraintList_add(e->trueEnsuresConstraints, cons);
738 if (lltok_isLt_Op (tok) )
740 cons = constraint_makeEnsureLessThan (t1, t2, sequencePoint);
741 e->trueEnsuresConstraints = constraintList_add(e->trueEnsuresConstraints, cons);
742 cons = constraint_makeEnsureGreaterThanEqual (t1, t2, sequencePoint);
743 e->falseEnsuresConstraints = constraintList_add(e->falseEnsuresConstraints, cons);
747 if (lltok_isGe_Op (tok) )
750 cons = constraint_makeEnsureGreaterThanEqual (t1, t2, sequencePoint);
751 e->trueEnsuresConstraints = constraintList_add(e->trueEnsuresConstraints, cons);
753 cons = constraint_makeEnsureLessThan (t1, t2, sequencePoint);
754 e->falseEnsuresConstraints = constraintList_add(e->falseEnsuresConstraints, cons);
759 if (lltok_isGt_Op (tok) )
761 cons = constraint_makeEnsureGreaterThan (t1, t2, sequencePoint);
762 e->trueEnsuresConstraints = constraintList_add(e->trueEnsuresConstraints, cons);
763 cons = constraint_makeEnsureLessThanEqual (t1, t2, sequencePoint);
764 e->falseEnsuresConstraints = constraintList_add(e->falseEnsuresConstraints, cons);
767 if (lltok_isLe_Op (tok) )
769 cons = constraint_makeEnsureLessThanEqual (t1, t2, sequencePoint);
770 e->trueEnsuresConstraints = constraintList_add(e->trueEnsuresConstraints, cons);
772 cons = constraint_makeEnsureGreaterThan (t1, t2, sequencePoint);
773 e->falseEnsuresConstraints = constraintList_add(e->falseEnsuresConstraints, cons);
778 /*Logical operations */
780 if (lltok_isAnd_Op (tok) )
784 tempList = constraintList_copy (t1->trueEnsuresConstraints);
785 tempList = constraintList_addList (tempList, t2->trueEnsuresConstraints);
786 e->trueEnsuresConstraints = constraintList_addList(e->trueEnsuresConstraints, tempList);
788 //false ensures: fens t1 or tens t1 and fens t2
789 tempList = constraintList_copy (t1->trueEnsuresConstraints);
790 tempList = constraintList_addList (tempList, t2->falseEnsuresConstraints);
791 tempList = constraintList_logicalOr (tempList, t1->falseEnsuresConstraints);
792 e->falseEnsuresConstraints =constraintList_addList(e->falseEnsuresConstraints, tempList);
795 else if (lltok_isOr_Op (tok) )
798 tempList = constraintList_copy (t1->falseEnsuresConstraints);
799 tempList = constraintList_addList (tempList, t2->falseEnsuresConstraints);
800 e->falseEnsuresConstraints = constraintList_addList(e->falseEnsuresConstraints, tempList);
802 //true ensures: tens t1 or fens t1 and tens t2
803 tempList = constraintList_copy (t1->falseEnsuresConstraints);
804 tempList = constraintList_addList (tempList, t2->trueEnsuresConstraints);
805 tempList = constraintList_logicalOr (tempList, t1->trueEnsuresConstraints);
806 e->trueEnsuresConstraints =constraintList_addList(e->trueEnsuresConstraints, tempList);
811 DPRINTF((message("%s is not a boolean operation", lltok_unparse(tok) ) ));
816 void exprNode_exprTraverse (exprNode e, bool definatelv, bool definaterv, fileloc sequencePoint)
818 exprNode t1, t2, fcn;
820 bool handledExprNode;
824 if (exprNode_isError(e) )
829 DPRINTF((message ("exprNode_exprTraverset Analysising %s %s at", exprNode_unparse( e),
830 fileloc_unparse(exprNode_getfileloc(e) ) ) ) );
832 e->requiresConstraints = constraintList_makeNew();
833 e->ensuresConstraints = constraintList_makeNew();
834 e->trueEnsuresConstraints = constraintList_makeNew();;
835 e->falseEnsuresConstraints = constraintList_makeNew();;
837 if (exprNode_isUnhandled (e) )
841 // e = makeDataTypeConstraints (e);
843 handledExprNode = TRUE;
852 t1 = exprData_getSingle (data);
853 exprNode_exprTraverse (t1, definatelv, definaterv, sequencePoint);
854 e = exprNode_copyConstraints (e, t1);
861 t1 = (exprData_getPairA (data) );
862 t2 = (exprData_getPairB (data) );
863 cons = constraint_makeWriteSafeExprNode (t1, t2);
867 t1 = (exprData_getPairA (data) );
868 t2 = (exprData_getPairB (data) );
869 cons = constraint_makeReadSafeExprNode (t1, t2 );
872 e->requiresConstraints = constraintList_add(e->requiresConstraints, cons);
873 cons = constraint_makeEnsureMaxReadAtLeast (t1, t2, sequencePoint);
874 e->ensuresConstraints = constraintList_add(e->ensuresConstraints, cons);
876 cons = constraint_makeEnsureLteMaxRead (t2, t1);
877 e->trueEnsuresConstraints = constraintList_add(e->trueEnsuresConstraints, cons);
879 // cons = constraint_makeEnsureMinReadAtMost (t1, t2, sequencePoint);
880 // e->ensuresConstraints = constraintList_add(e->ensuresConstraints, cons);
882 exprNode_exprTraverse (exprData_getPairA (data), FALSE, TRUE, sequencePoint);
883 exprNode_exprTraverse (exprData_getPairB (data), FALSE, TRUE, sequencePoint);
885 /*@i325 Should check which is array/index. */
889 exprNode_exprTraverse (exprData_getUopNode (e->edata), definatelv, definaterv, sequencePoint);
890 // e->constraints = constraintList_exprNodemerge (exprData_getUopNode (e->edata), exprNode_undefined);
893 /* //t1 = exprData_getInitId (data); */
894 t2 = exprData_getInitNode (data);
895 //exprNode_exprTraverse (t1, TRUE, FALSE, sequencePoint );
897 exprNode_exprTraverse (t2, definatelv, TRUE, sequencePoint );
899 /* this test is nessecary because some expressions generate a null expression node. function pointer do that -- drl */
900 if ( (!exprNode_isError (e)) && (!exprNode_isError(t2)) )
902 cons = constraint_makeEnsureEqual (e, t2, sequencePoint);
903 e->ensuresConstraints = constraintList_add(e->ensuresConstraints, cons);
908 t1 = exprData_getOpA (data);
909 t2 = exprData_getOpB (data);
910 exprNode_exprTraverse (t1, TRUE, definaterv, sequencePoint );
911 //lltok_unparse (exprData_getOpTok (data));
912 #warning check this for += -= etc
913 exprNode_exprTraverse (t2, definatelv, TRUE, sequencePoint );
915 /* this test is nessecary because some expressions generate a null expression node. function pointer do that -- drl */
916 if ( (!exprNode_isError (t1)) && (!exprNode_isError(t2)) )
918 cons = constraint_makeEnsureEqual (t1, t2, sequencePoint);
919 e->ensuresConstraints = constraintList_add(e->ensuresConstraints, cons);
923 t1 = exprData_getOpA (data);
924 t2 = exprData_getOpB (data);
926 exprNode_exprTraverse (t1, definatelv, definaterv, sequencePoint );
927 tok = exprData_getOpTok (data);
928 exprNode_exprTraverse (t2, definatelv, definaterv, sequencePoint );
930 if (lltok_isBoolean_Op (tok) )
931 exprNode_booleanTraverse (e, definatelv, definaterv, sequencePoint);
933 // e->constraints = constraintList_exprNodemerge (exprData_getOpA (data), exprData_getOpB (data));
936 #warning make sure the case can be ignored..
941 exprNode_exprTraverse (exprData_getSingle (data), definatelv, definaterv, sequencePoint );
942 // e->constraints = constraintList_exprNodemerge (exprData_getSingle (e->edata), exprNode_undefined);
946 fcn = exprData_getFcn(data);
948 exprNode_exprTraverse (fcn, definatelv, definaterv, sequencePoint );
949 DPRINTF ( (message ("Got call that %s ( %s) ", exprNode_unparse(fcn), exprNodeList_unparse (exprData_getArgs (data) ) ) ) );
951 fcn->requiresConstraints = constraintList_addList (fcn->requiresConstraints,
952 checkCall (fcn, exprData_getArgs (data) ) );
954 fcn->ensuresConstraints = constraintList_addList (fcn->ensuresConstraints,
955 getPostConditions(fcn, exprData_getArgs (data),e ) );
957 t1 = exprNode_createNew (exprNode_getType (e) );
959 checkArgumentList (t1, exprData_getArgs(data), sequencePoint);
962 mergeResolve (e, t1, fcn);
964 // e->constraints = constraintList_add (e->constraints, constraint_create (e,exprNode_undefined, GT, CALLSAFE ) );
968 exprNode_exprTraverse (exprData_getSingle (data), definatelv, definaterv, sequencePoint );
977 exprNode_exprTraverse (exprData_getFieldNode (data), definatelv, definaterv, sequencePoint );
981 exprNode_exprTraverse (exprData_getFieldNode (data), definatelv, definaterv, sequencePoint );
984 case XPR_STRINGLITERAL:
993 t1 = exprData_getUopNode(data);
994 tok = (exprData_getUopTok (data));
995 //lltok_unparse (exprData_getUopTok (data));
996 exprNode_exprTraverse (t1, definatelv, definaterv, sequencePoint );
997 /*handle * pointer access */
998 if (lltok_isInc_Op (tok) )
1000 DPRINTF(("doing ++(var)"));
1001 t1 = exprData_getUopNode (data);
1002 cons = constraint_makeMaxSetSideEffectPostIncrement (t1, sequencePoint );
1003 e->ensuresConstraints = constraintList_add (e->ensuresConstraints, cons);
1005 else if (lltok_isDec_Op (tok) )
1007 DPRINTF(("doing --(var)"));
1008 t1 = exprData_getUopNode (data);
1009 cons = constraint_makeMaxSetSideEffectPostDecrement (t1, sequencePoint );
1010 e->ensuresConstraints = constraintList_add (e->ensuresConstraints, cons);
1012 else if (lltok_isMult( tok ) )
1016 cons = constraint_makeWriteSafeInt (t1, 0);
1020 cons = constraint_makeReadSafeInt (t1, 0);
1022 e->requiresConstraints = constraintList_add(e->requiresConstraints, cons);
1024 else if (lltok_isNot_Op (tok) )
1027 e->trueEnsuresConstraints = constraintList_copy (t1->falseEnsuresConstraints);
1028 e->falseEnsuresConstraints = constraintList_copy (t1->trueEnsuresConstraints);
1030 else if (lltok_isAmpersand_Op (tok) )
1036 llcontbug((message("Unsupported preop in %s", exprNode_unparse(e) ) ));
1043 exprNode_exprTraverse (exprData_getUopNode (data), TRUE, definaterv, sequencePoint );
1045 if (lltok_isInc_Op (exprData_getUopTok (data) ) )
1047 DPRINTF(("doing ++"));
1048 t1 = exprData_getUopNode (data);
1049 cons = constraint_makeMaxSetSideEffectPostIncrement (t1, sequencePoint );
1050 e->ensuresConstraints = constraintList_add (e->ensuresConstraints, cons);
1052 if (lltok_isDec_Op (exprData_getUopTok (data) ) )
1054 DPRINTF(("doing --"));
1055 t1 = exprData_getUopNode (data);
1056 cons = constraint_makeMaxSetSideEffectPostDecrement (t1, sequencePoint );
1057 e->ensuresConstraints = constraintList_add (e->ensuresConstraints, cons);
1062 exprNode_exprTraverse (exprData_getCastNode (data), definatelv, definaterv, sequencePoint );
1066 exprNode pred, true, false;
1068 pred = exprData_getTriplePred (data);
1069 true = exprData_getTripleTrue (data);
1070 false = exprData_getTripleFalse (data);
1072 exprNode_exprTraverse (pred, FALSE, TRUE, sequencePoint );
1073 pred->ensuresConstraints = exprNode_traversEnsuresConstraints(pred);
1074 pred->requiresConstraints = exprNode_traversRequiresConstraints(pred);
1076 pred->trueEnsuresConstraints = exprNode_traversTrueEnsuresConstraints(pred);
1077 pred->falseEnsuresConstraints = exprNode_traversFalseEnsuresConstraints(pred);
1079 exprNode_exprTraverse (true, FALSE, TRUE, sequencePoint );
1080 true->ensuresConstraints = exprNode_traversEnsuresConstraints(true);
1081 true->requiresConstraints = exprNode_traversRequiresConstraints(true);
1083 true->trueEnsuresConstraints = exprNode_traversTrueEnsuresConstraints(true);
1084 true->falseEnsuresConstraints = exprNode_traversFalseEnsuresConstraints(true);
1086 exprNode_exprTraverse (false, FALSE, TRUE, sequencePoint );
1087 false->ensuresConstraints = exprNode_traversEnsuresConstraints(false);
1088 false->requiresConstraints = exprNode_traversRequiresConstraints(false);
1090 false->trueEnsuresConstraints = exprNode_traversTrueEnsuresConstraints(false);
1091 false->falseEnsuresConstraints = exprNode_traversFalseEnsuresConstraints(false);
1094 /* if pred is true e equals true otherwise pred equals false */
1096 cons = constraint_makeEnsureEqual (e, true, sequencePoint);
1097 true->ensuresConstraints = constraintList_add(true->ensuresConstraints, cons);
1099 cons = constraint_makeEnsureEqual (e, true, sequencePoint);
1100 false->ensuresConstraints = constraintList_add(false->ensuresConstraints, cons);
1102 e = doIfElse (e, pred, true, false);
1108 t1 = exprData_getPairA (data);
1109 t2 = exprData_getPairB (data);
1110 /* we essiantially treat this like expr1; expr2
1111 of course sequencePoint isn't adjusted so this isn't completely accurate
1113 exprNode_exprTraverse (t1, FALSE, FALSE, sequencePoint );
1114 exprNode_exprTraverse (t2, definatelv, definaterv, sequencePoint );
1115 mergeResolve (e, t1, t2);
1119 handledExprNode = FALSE;
1122 e->requiresConstraints = constraintList_preserveOrig ( e->requiresConstraints);
1123 e->ensuresConstraints = constraintList_preserveOrig ( e->ensuresConstraints);
1124 e->requiresConstraints = constraintList_addGeneratingExpr ( e->requiresConstraints, e);
1126 e->ensuresConstraints = constraintList_addGeneratingExpr ( e->ensuresConstraints, e);
1128 DPRINTF((message ("ensures constraint for %s are %s", exprNode_unparse(e), constraintList_printDetailed(e->ensuresConstraints) ) ));
1130 return; // handledExprNode;
1134 constraintList exprNode_traversTrueEnsuresConstraints (exprNode e)
1138 bool handledExprNode;
1143 if (exprNode_handleError (e))
1145 ret = constraintList_makeNew();
1148 ret = constraintList_copy (e->trueEnsuresConstraints );
1150 handledExprNode = TRUE;
1157 t1 = exprData_getSingle (data);
1158 ret = constraintList_addList ( ret,exprNode_traversTrueEnsuresConstraints (t1) );
1163 ret = constraintList_addList (ret,
1164 exprNode_traversTrueEnsuresConstraints
1165 (exprData_getPairA (data) ) );
1167 ret = constraintList_addList (ret,
1168 exprNode_traversTrueEnsuresConstraints
1169 (exprData_getPairB (data) ) );
1173 ret = constraintList_addList (ret,
1174 exprNode_traversTrueEnsuresConstraints
1175 (exprData_getUopNode (data) ) );
1179 ret = constraintList_addList (ret, exprNode_traversTrueEnsuresConstraints
1180 (exprData_getUopNode (data) ) );
1183 ret = constraintList_addList (ret,
1184 exprNode_traversTrueEnsuresConstraints
1185 (exprData_getOpA (data) ) );
1187 ret = constraintList_addList (ret,
1188 exprNode_traversTrueEnsuresConstraints
1189 (exprData_getOpB (data) ) );
1192 ret = constraintList_addList (ret,
1193 exprNode_traversTrueEnsuresConstraints
1194 (exprData_getOpA (data) ) );
1196 ret = constraintList_addList (ret,
1197 exprNode_traversTrueEnsuresConstraints
1198 (exprData_getOpB (data) ) );
1202 // ctype_unparse (qtype_getType (exprData_getType (data) ) );
1208 ret = constraintList_addList (ret,
1209 exprNode_traversTrueEnsuresConstraints
1210 (exprData_getSingle (data) ) );
1214 ret = constraintList_addList (ret,
1215 exprNode_traversTrueEnsuresConstraints
1216 (exprData_getFcn (data) ) );
1217 /*@i11*/ // exprNodeList_unparse (exprData_getArgs (data) );
1221 ret = constraintList_addList (ret,
1222 exprNode_traversTrueEnsuresConstraints
1223 (exprData_getSingle (data) ) );
1226 case XPR_NULLRETURN:
1227 // cstring_makeLiteral ("return");;
1231 ret = constraintList_addList (ret,
1232 exprNode_traversTrueEnsuresConstraints
1233 (exprData_getFieldNode (data) ) );
1234 //exprData_getFieldName (data) ;
1238 ret = constraintList_addList (ret,
1239 exprNode_traversTrueEnsuresConstraints
1240 (exprData_getFieldNode (data) ) );
1241 // exprData_getFieldName (data);
1244 case XPR_STRINGLITERAL:
1245 // cstring_copy (exprData_getLiteral (data));
1249 // cstring_copy (exprData_getLiteral (data));
1253 ret = constraintList_addList (ret,
1254 exprNode_traversTrueEnsuresConstraints
1255 (exprData_getUopNode (data) ) );
1260 ret = constraintList_addList (ret,
1261 exprNode_traversTrueEnsuresConstraints
1262 (exprData_getCastNode (data) ) );
1272 constraintList exprNode_traversFalseEnsuresConstraints (exprNode e)
1276 bool handledExprNode;
1281 if (exprNode_handleError (e))
1283 ret = constraintList_makeNew();
1286 ret = constraintList_copy (e->falseEnsuresConstraints );
1288 handledExprNode = TRUE;
1295 t1 = exprData_getSingle (data);
1296 ret = constraintList_addList ( ret,exprNode_traversFalseEnsuresConstraints (t1) );
1301 ret = constraintList_addList (ret,
1302 exprNode_traversFalseEnsuresConstraints
1303 (exprData_getPairA (data) ) );
1305 ret = constraintList_addList (ret,
1306 exprNode_traversFalseEnsuresConstraints
1307 (exprData_getPairB (data) ) );
1311 ret = constraintList_addList (ret,
1312 exprNode_traversFalseEnsuresConstraints
1313 (exprData_getUopNode (data) ) );
1317 ret = constraintList_addList (ret, exprNode_traversFalseEnsuresConstraints
1318 (exprData_getUopNode (data) ) );
1321 ret = constraintList_addList (ret,
1322 exprNode_traversFalseEnsuresConstraints
1323 (exprData_getOpA (data) ) );
1325 ret = constraintList_addList (ret,
1326 exprNode_traversFalseEnsuresConstraints
1327 (exprData_getOpB (data) ) );
1330 ret = constraintList_addList (ret,
1331 exprNode_traversFalseEnsuresConstraints
1332 (exprData_getOpA (data) ) );
1334 ret = constraintList_addList (ret,
1335 exprNode_traversFalseEnsuresConstraints
1336 (exprData_getOpB (data) ) );
1340 // ctype_unparse (qtype_getType (exprData_getType (data) ) );
1346 ret = constraintList_addList (ret,
1347 exprNode_traversFalseEnsuresConstraints
1348 (exprData_getSingle (data) ) );
1352 ret = constraintList_addList (ret,
1353 exprNode_traversFalseEnsuresConstraints
1354 (exprData_getFcn (data) ) );
1355 /*@i11*/ // exprNodeList_unparse (exprData_getArgs (data) );
1359 ret = constraintList_addList (ret,
1360 exprNode_traversFalseEnsuresConstraints
1361 (exprData_getSingle (data) ) );
1364 case XPR_NULLRETURN:
1365 // cstring_makeLiteral ("return");;
1369 ret = constraintList_addList (ret,
1370 exprNode_traversFalseEnsuresConstraints
1371 (exprData_getFieldNode (data) ) );
1372 //exprData_getFieldName (data) ;
1376 ret = constraintList_addList (ret,
1377 exprNode_traversFalseEnsuresConstraints
1378 (exprData_getFieldNode (data) ) );
1379 // exprData_getFieldName (data);
1382 case XPR_STRINGLITERAL:
1383 // cstring_copy (exprData_getLiteral (data));
1387 // cstring_copy (exprData_getLiteral (data));
1391 ret = constraintList_addList (ret,
1392 exprNode_traversFalseEnsuresConstraints
1393 (exprData_getUopNode (data) ) );
1398 ret = constraintList_addList (ret,
1399 exprNode_traversFalseEnsuresConstraints
1400 (exprData_getCastNode (data) ) );
1411 /* walk down the tree and get all requires Constraints in each subexpression*/
1412 constraintList exprNode_traversRequiresConstraints (exprNode e)
1416 bool handledExprNode;
1421 if (exprNode_handleError (e))
1423 ret = constraintList_makeNew();
1426 ret = constraintList_copy (e->requiresConstraints );
1428 handledExprNode = TRUE;
1435 t1 = exprData_getSingle (data);
1436 ret = constraintList_addList ( ret,exprNode_traversRequiresConstraints (t1) );
1441 ret = constraintList_addList (ret,
1442 exprNode_traversRequiresConstraints
1443 (exprData_getPairA (data) ) );
1445 ret = constraintList_addList (ret,
1446 exprNode_traversRequiresConstraints
1447 (exprData_getPairB (data) ) );
1451 ret = constraintList_addList (ret,
1452 exprNode_traversRequiresConstraints
1453 (exprData_getUopNode (data) ) );
1457 ret = constraintList_addList (ret, exprNode_traversRequiresConstraints
1458 (exprData_getUopNode (data) ) );
1461 ret = constraintList_addList (ret,
1462 exprNode_traversRequiresConstraints
1463 (exprData_getOpA (data) ) );
1465 ret = constraintList_addList (ret,
1466 exprNode_traversRequiresConstraints
1467 (exprData_getOpB (data) ) );
1470 ret = constraintList_addList (ret,
1471 exprNode_traversRequiresConstraints
1472 (exprData_getOpA (data) ) );
1474 ret = constraintList_addList (ret,
1475 exprNode_traversRequiresConstraints
1476 (exprData_getOpB (data) ) );
1480 // ctype_unparse (qtype_getType (exprData_getType (data) ) );
1486 ret = constraintList_addList (ret,
1487 exprNode_traversRequiresConstraints
1488 (exprData_getSingle (data) ) );
1492 ret = constraintList_addList (ret,
1493 exprNode_traversRequiresConstraints
1494 (exprData_getFcn (data) ) );
1495 /*@i11*/ // exprNodeList_unparse (exprData_getArgs (data) );
1499 ret = constraintList_addList (ret,
1500 exprNode_traversRequiresConstraints
1501 (exprData_getSingle (data) ) );
1504 case XPR_NULLRETURN:
1505 // cstring_makeLiteral ("return");;
1509 ret = constraintList_addList (ret,
1510 exprNode_traversRequiresConstraints
1511 (exprData_getFieldNode (data) ) );
1512 //exprData_getFieldName (data) ;
1516 ret = constraintList_addList (ret,
1517 exprNode_traversRequiresConstraints
1518 (exprData_getFieldNode (data) ) );
1519 // exprData_getFieldName (data);
1522 case XPR_STRINGLITERAL:
1523 // cstring_copy (exprData_getLiteral (data));
1527 // cstring_copy (exprData_getLiteral (data));
1531 ret = constraintList_addList (ret,
1532 exprNode_traversRequiresConstraints
1533 (exprData_getUopNode (data) ) );
1538 ret = constraintList_addList (ret,
1539 exprNode_traversRequiresConstraints
1540 (exprData_getCastNode (data) ) );
1551 /* walk down the tree and get all Ensures Constraints in each subexpression*/
1552 constraintList exprNode_traversEnsuresConstraints (exprNode e)
1556 bool handledExprNode;
1559 // constraintExpr tmp;
1564 if (exprNode_handleError (e))
1566 ret = constraintList_makeNew();
1570 ret = constraintList_copy (e->ensuresConstraints );
1571 handledExprNode = TRUE;
1576 "exprnode_traversEnsuresConstraints call for %s with constraintList of %s",
1577 exprNode_unparse (e),
1578 constraintList_print(e->ensuresConstraints)
1586 t1 = exprData_getSingle (data);
1587 ret = constraintList_addList ( ret,exprNode_traversEnsuresConstraints (t1) );
1592 ret = constraintList_addList (ret,
1593 exprNode_traversEnsuresConstraints
1594 (exprData_getPairA (data) ) );
1596 ret = constraintList_addList (ret,
1597 exprNode_traversEnsuresConstraints
1598 (exprData_getPairB (data) ) );
1602 ret = constraintList_addList (ret,
1603 exprNode_traversEnsuresConstraints
1604 (exprData_getUopNode (data) ) );
1608 ret = constraintList_addList (ret, exprNode_traversEnsuresConstraints
1609 (exprData_getUopNode (data) ) );
1612 ret = constraintList_addList (ret,
1613 exprNode_traversEnsuresConstraints
1614 (exprData_getOpA (data) ) );
1616 ret = constraintList_addList (ret,
1617 exprNode_traversEnsuresConstraints
1618 (exprData_getOpB (data) ) );
1621 ret = constraintList_addList (ret,
1622 exprNode_traversEnsuresConstraints
1623 (exprData_getOpA (data) ) );
1625 ret = constraintList_addList (ret,
1626 exprNode_traversEnsuresConstraints
1627 (exprData_getOpB (data) ) );
1631 // ctype_unparse (qtype_getType (exprData_getType (data) ) );
1637 ret = constraintList_addList (ret,
1638 exprNode_traversEnsuresConstraints
1639 (exprData_getSingle (data) ) );
1643 ret = constraintList_addList (ret,
1644 exprNode_traversEnsuresConstraints
1645 (exprData_getFcn (data) ) );
1646 /*@i11*/ // exprNodeList_unparse (exprData_getArgs (data) );
1650 ret = constraintList_addList (ret,
1651 exprNode_traversEnsuresConstraints
1652 (exprData_getSingle (data) ) );
1655 case XPR_NULLRETURN:
1656 // cstring_makeLiteral ("return");;
1660 ret = constraintList_addList (ret,
1661 exprNode_traversEnsuresConstraints
1662 (exprData_getFieldNode (data) ) );
1663 //exprData_getFieldName (data) ;
1667 ret = constraintList_addList (ret,
1668 exprNode_traversEnsuresConstraints
1669 (exprData_getFieldNode (data) ) );
1670 // exprData_getFieldName (data);
1673 case XPR_STRINGLITERAL:
1674 // cstring_copy (exprData_getLiteral (data));
1678 // cstring_copy (exprData_getLiteral (data));
1682 ret = constraintList_addList (ret,
1683 exprNode_traversEnsuresConstraints
1684 (exprData_getUopNode (data) ) );
1688 ret = constraintList_addList (ret,
1689 exprNode_traversEnsuresConstraints
1690 (exprData_getCastNode (data) ) );
1697 "exprnode_traversEnsuresConstraints call for %s with constraintList of is returning %s",
1698 exprNode_unparse (e),
1699 // constraintList_print(e->ensuresConstraints),
1700 constraintList_print(ret)