2 ** Splint - annotation-assisted static program checker
3 ** Copyright (C) 1994-2003 University of Virginia,
4 ** Massachusetts Institute of Technology
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.
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.
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.
20 ** For information on splint: info@splint.org
21 ** To report a bug: splint-bug@splint.org
22 ** For more information: http://www.splint.org
29 /* #define DEBUGPRINT 1 */
31 # include "splintMacros.nf"
33 # include "cgrammar.h"
34 # include "cgrammar_tokens.h"
36 # include "exprChecks.h"
37 # include "exprNodeSList.h"
40 static ctype constraintExpr_getOrigType (constraintExpr p_e);
41 static bool constraintExpr_hasTypeChange(constraintExpr p_e) /*@*/;
43 static /*@only@*/ constraintExpr constraintExpr_makeBinaryOpConstraintExprIntLiteral (/*@only@*/constraintExpr p_expr, int p_literal);
46 /*@only@*/ static constraintExpr
47 doSRefFixInvarConstraintTerm (/*@only@*/ constraintExpr p_e,
48 sRef p_s, ctype p_ct);
50 /*@only@*/ static constraintExpr
51 doSRefFixConstraintParamTerm (/*@only@*/ constraintExpr p_e, /*@temp@*/ /*@observer@*/ exprNodeList p_arglist) /*@modifies p_e@*/;
53 static /*@only@*/ constraintExpr
54 doFixResultTerm (/*@only@*/ constraintExpr p_e, /*@exposed@*/ exprNode p_fcnCall)
57 static bool constraintExpr_canGetCType (constraintExpr p_e) /*@*/;
59 static ctype constraintExpr_getCType (constraintExpr p_e);
61 static /*@only@*/ constraintExpr constraintExpr_adjustMaxSetForCast(/*@only@*/ constraintExpr p_e, ctype p_ct);
63 /*@special@*/ /*@notnull@*/ static constraintExpr constraintExpr_makeBinaryOp (void)
64 /* @allocates result->data @ @sets result->kind @ */ ;
66 void constraintExpr_free (/*@only@*/ constraintExpr expr)
68 if (constraintExpr_isDefined(expr) )
73 constraintExprData_freeUnaryExpr(expr->data);
76 constraintExprData_freeBinaryExpr(expr->data);
79 constraintExprData_freeTerm(expr->data);
90 llcontbug(message("attempted to free null pointer in constraintExpr_free"));
94 bool constraintExpr_isLit (constraintExpr expr)
96 llassert (expr != NULL);
98 if (expr->kind == term)
100 constraintTerm term = constraintExprData_termGetTerm (expr->data);
101 if (constraintTerm_isIntLiteral (term) )
110 static bool isZeroBinaryOp (constraintExpr expr)
114 llassert (expr != NULL); /* evans 2001-07-18 */
116 if (!constraintExpr_isBinaryExpr (expr) )
122 e2 = constraintExprData_binaryExprGetExpr2(expr->data);
124 llassert (e2 != NULL); /* evans 2001-07-18 */
126 if (constraintExpr_isBinaryExpr (e2) )
129 constraintExprBinaryOpKind op;
131 op = constraintExprData_binaryExprGetOp (e2->data);
133 e1 = constraintExprData_binaryExprGetExpr1(e2->data);
135 if (constraintExpr_isLit(e1) )
137 if (constraintExpr_getValue(e1) == 0 )
146 /* change expr + (o - expr) to (expr -expr) */
148 /*@only@*/ /*@notnull@*/ static constraintExpr removeZero (/*@only@*/ /*@returned@*/ constraintExpr expr)
150 constraintExpr expr1, expr2;
154 constraintExprBinaryOpKind op;
156 constraintExprBinaryOpKind tempOp;
158 llassert (expr != NULL); /* evans 2001-07-18 */
160 if (!isZeroBinaryOp(expr) )
164 expr1 = constraintExprData_binaryExprGetExpr1(expr->data);
165 expr2 = constraintExprData_binaryExprGetExpr2(expr->data);
166 op = constraintExprData_binaryExprGetOp(expr->data);
168 llassert( constraintExpr_isBinaryExpr(expr2) );
170 temp = constraintExprData_binaryExprGetExpr2 (expr2->data);
171 temp = constraintExpr_copy (temp);
173 tempOp = constraintExprData_binaryExprGetOp (expr2->data);
175 if (op == BINARYOP_PLUS)
177 else if (op == BINARYOP_MINUS)
179 if (tempOp == BINARYOP_PLUS)
181 else if (tempOp == BINARYOP_MINUS)
189 expr->data = constraintExprData_binaryExprSetExpr2(expr->data, temp);
190 expr->data = constraintExprData_binaryExprSetOp(expr->data, op);
196 /*@only@*//*@notnull@*/ constraintExpr constraintExpr_propagateConstants (/*@only@*/ constraintExpr expr,
197 /*@out@*/ bool * propagate,
198 /*@out@*/ int *literal)
200 constraintExpr expr1;
201 constraintExpr expr2;
202 bool propagate1, propagate2;
203 int literal1, literal2;
204 constraintExprBinaryOpKind op;
216 llassert (expr != NULL);
218 /* we simplify unaryExpr elsewhere */
219 if (expr->kind != binaryexpr)
222 op = constraintExprData_binaryExprGetOp (expr->data);
224 DPRINTF((message("constraintExpr_propagateConstants: binaryexpr: %s", constraintExpr_unparse(expr) ) ) );
226 expr = removeZero(expr);
228 expr1 = constraintExprData_binaryExprGetExpr1(expr->data);
229 expr2 = constraintExprData_binaryExprGetExpr2(expr->data);
231 expr1 = constraintExpr_copy(expr1);
232 expr2 = constraintExpr_copy(expr2);
234 expr1 = constraintExpr_propagateConstants (expr1, &propagate1, &literal1);
235 expr2 = constraintExpr_propagateConstants (expr2, &propagate2, &literal2);
237 expr1 = removeZero(expr1);
238 expr2 = removeZero(expr2);
241 *propagate = propagate1 || propagate2;
243 if (op == BINARYOP_PLUS)
244 *literal = literal1 + literal2;
245 else if (op == BINARYOP_MINUS)
246 *literal = literal1 - literal2;
250 if ( constraintExpr_isLit (expr1) && constraintExpr_isLit (expr2) )
253 t1 = constraintExpr_getValue (expr1);
254 t2 = constraintExpr_getValue (expr2);
255 llassert(*propagate == FALSE);
258 constraintExpr_free (expr);
259 constraintExpr_free (expr1);
260 constraintExpr_free (expr2);
262 if (op == BINARYOP_PLUS )
263 return (constraintExpr_makeIntLiteral ((t1+t2) ));
264 else if (op == BINARYOP_MINUS)
265 return (constraintExpr_makeIntLiteral ((t1-t2) ));
271 if (constraintExpr_isLit (expr1) )
275 *literal += constraintExpr_getValue (expr1);
277 if (op == BINARYOP_PLUS)
279 constraintExpr_free(expr1);
280 constraintExpr_free(expr);
283 else if (op == BINARYOP_MINUS)
288 /* this is an ugly kludge to deal with not
289 having a unary minus operation...*/
291 temp = constraintExpr_makeIntLiteral (0);
292 temp = constraintExpr_makeSubtractExpr (temp, expr2);
294 constraintExpr_free(expr1);
295 constraintExpr_free(expr);
297 llassert (constraintExpr_isDefined(temp) );
302 BADBRANCH; /* evans 2001-07-18 */
306 if (constraintExpr_isLit (expr2) )
310 if ( op == BINARYOP_PLUS )
311 *literal += constraintExpr_getValue (expr2);
312 else if (op == BINARYOP_MINUS)
313 *literal -= constraintExpr_getValue (expr2);
318 constraintExpr_free(expr2);
319 constraintExpr_free(expr);
323 DPRINTF((message("constraintExpr_propagateConstants returning: %s", constraintExpr_unparse(expr) ) ) );
325 expr->data = constraintExprData_binaryExprSetExpr1 (expr->data, expr1);
326 expr->data = constraintExprData_binaryExprSetExpr2 (expr->data, expr2);
328 expr = removeZero(expr);
332 /*@notnull@*/ /*@only@*/ static constraintExpr constraintExpr_combineConstants (/*@only@*/ constraintExpr expr ) /*@modifies expr@*/
337 DPRINTF ((message ("Before combine %s", constraintExpr_unparse(expr) ) ) );
338 expr = constraintExpr_propagateConstants (expr, &propagate, &literal);
347 ret = constraintExpr_makeBinaryOpConstraintExprIntLiteral (expr, literal);
351 DPRINTF ((message ("After combine %s", constraintExpr_unparse(expr) ) ) );
353 llassert(constraintExpr_isDefined(expr) );
358 static /*@notnull@*/ constraintExpr constraintExpr_alloc (void) /*@post:isnull result->data@*/
361 ret = dmalloc (sizeof (*ret) );
365 ret->origType = ctype_undefined;
369 /*@only@*/ static constraintExprData copyExprData (/*@observer@*/ constraintExprData data, constraintExprKind kind)
371 constraintExprData ret;
372 llassert(constraintExprData_isDefined(data));
377 ret = constraintExprData_copyBinaryExpr(data);
380 ret = constraintExprData_copyUnaryExpr(data);
383 ret = constraintExprData_copyTerm(data);
391 constraintExpr constraintExpr_copy (constraintExpr expr)
394 ret = constraintExpr_alloc ();
397 /*drl 03/02/2003 this shouldn't be used to copy a null
398 expression but handle things cleanly if it is*/
399 llassert (!constraintExpr_isUndefined(expr) );
401 if (constraintExpr_isUndefined(expr) )
403 return constraintExpr_undefined;
406 ret->kind = expr->kind;
408 ret->data = copyExprData (expr->data, expr->kind);
410 ret->origType = expr->origType;
415 /*@only@*/ static constraintExpr oldconstraintExpr_makeTermExprNode ( /*@dependent@*/ exprNode e)
419 ret = constraintExpr_alloc();
421 ret->data = dmalloc (sizeof *(ret->data) );
422 t = constraintTerm_makeExprNode (e);
423 ret->data = constraintExprData_termSetTerm (ret->data, t);
425 ret->origType = ctype_undefined;
430 /*@access exprNode@*/
431 constraintExpr constraintExpr_makeExprNode (exprNode e)
434 constraintExpr ret, ce1, ce2;
439 llassert (e != NULL);
446 t = exprData_getSingle (data);
447 while (exprNode_isInParens (t) )
449 t = exprData_getUopNode (t->edata);
451 s = exprNode_getSref (t);
452 if (sRef_isFixedArray(s) )
456 size = (int) sRef_getArraySize(s);
457 ret = constraintExpr_makeIntLiteral (size);
459 else if (exprNode_isStringLiteral (t))
461 cstring str = multiVal_forceString (exprNode_getValue(t));
462 ret = constraintExpr_makeIntLiteral (size_toLong (cstring_length (str) + 1));
466 DPRINTF ((message ("could not determine the size of %s", exprNode_unparse (e) ) ) );
467 ret = oldconstraintExpr_makeTermExprNode (e);
472 DPRINTF ((message ("Examining operation %s", exprNode_unparse (e) ) ) );
473 t1 = exprData_getOpA (data);
474 t2 = exprData_getOpB (data);
475 tok = exprData_getOpTok (data);
477 if (lltok_isPlus_Op (tok) || lltok_isMinus_Op (tok) )
479 ce1 = constraintExpr_makeExprNode (t1);
480 ce2 = constraintExpr_makeExprNode (t2);
481 ret = constraintExpr_parseMakeBinaryOp (ce1, tok, ce2);
486 /* uncomment this block to activate the cheesy heuristic
487 for handling sizeof expressions
492 We handle expressions containing sizeof with the rule
493 (sizeof type ) * Expr = Expr
495 This is the total wronge way to do this but...
496 it may be better than nothing
501 else if (lltok_isMult(tok) )
503 if ((t1->kind == XPR_SIZEOF) || (t1->kind == XPR_SIZEOFT) )
505 ret = constraintExpr_makeExprNode(t2);
507 else if ((t2->kind == XPR_SIZEOF) || (t2->kind == XPR_SIZEOFT) )
509 ret = constraintExpr_makeExprNode(t1);
513 ret = oldconstraintExpr_makeTermExprNode (e);
518 ret = oldconstraintExpr_makeTermExprNode (e);
522 t = exprData_getUopNode (data);
523 ret = constraintExpr_makeExprNode (t);
527 t = exprData_getUopNode (data);
528 tok = exprData_getUopTok (data);
529 if (lltok_isIncOp (tok))
532 temp = constraintExpr_makeExprNode(t);
533 ret = constraintExpr_makeIncConstraintExpr(temp);
535 else if (lltok_isDecOp (tok))
538 temp = constraintExpr_makeExprNode(t);
539 ret = constraintExpr_makeDecConstraintExpr(temp);
542 ret = oldconstraintExpr_makeTermExprNode (e);
546 t = exprData_getUopNode (data);
547 ret = constraintExpr_makeExprNode (t);
550 t = exprData_getCastNode (data);
551 ret = constraintExpr_makeExprNode (t);
554 t = exprData_getPairA(data);
555 ret = constraintExpr_makeExprNode(t);
556 /*@i3434*/ /* drl: I'm not sure if this is right. I'm adding a break to quiet Splint */
559 ret = oldconstraintExpr_makeTermExprNode (e);
565 /*@noaccess exprNode@*/
570 /*@only@*/ constraintExpr constraintExpr_makeTermExprNode (/*@exposed@*/ exprNode e)
572 return oldconstraintExpr_makeTermExprNode(e);
575 static constraintExpr constraintExpr_makeTerm (/*@only@*/ constraintTerm t)
579 ret = constraintExpr_alloc();
581 ret->data = dmalloc (sizeof *(ret->data) );
582 ret->data->term = NULL;
583 ret->data = constraintExprData_termSetTerm (ret->data, t);
585 ret->origType = ctype_undefined;
590 constraintExpr constraintExpr_makeTermsRef (/*@temp@*/ sRef s)
594 ret = constraintExpr_alloc();
596 ret->data = dmalloc (sizeof *(ret->data) );
597 t = constraintTerm_makesRef (s);
598 ret->data = constraintExprData_termSetTerm (ret->data, t);
601 ret->origType = ctype_undefined;
606 /*@special@*/ /*@notnull@*/ static constraintExpr makeUnaryOpGeneric (void) /*@allocates result->data@*/ /*@defines result->kind@*/
609 ret = constraintExpr_alloc();
610 ret->kind = unaryExpr;
611 ret->data = dmalloc ( sizeof *(ret->data) );
612 ret->data->unaryOp.expr = constraintExpr_undefined;
616 /*@notnull@*/ /*@only@*/ static constraintExpr constraintExpr_makeUnaryOpConstraintExpr (/*@only@*/ constraintExpr cexpr)
619 ret = makeUnaryOpGeneric();
623 ret->data = constraintExprData_unaryExprSetExpr (ret->data, cexpr);
624 ret->data = constraintExprData_unaryExprSetOp (ret->data, UNARYOP_UNDEFINED);
633 /*@only@*/ /*@notnull@*/static constraintExpr constraintExpr_makeUnaryOp (/*@only@*/ constraintExpr cexpr, constraintExprUnaryOpKind Op )
636 ret = makeUnaryOpGeneric();
638 ret->data = constraintExprData_unaryExprSetExpr (ret->data, cexpr);
639 ret->data = constraintExprData_unaryExprSetOp (ret->data, Op);
642 ret->origType = ctype_undefined;
647 /*@only@*/ /*@notnull@*/
648 static constraintExpr constraintExpr_makeUnaryOpExprNode (/*@exposed@*/ exprNode expr)
652 sub = constraintExpr_makeExprNode (expr);
653 ret = constraintExpr_makeUnaryOpConstraintExpr(sub);
658 /*@only@*/ /*@notnull@*/
659 static constraintExpr constraintExpr_makeMaxSetConstraintExpr (/*@only@*/ constraintExpr c)
662 ret = constraintExpr_makeUnaryOp (c, MAXSET);
667 /*@only@*/ /*@notnull@*/
668 static constraintExpr constraintExpr_makeSRefUnaryOp (/*@temp@*/ /*@observer@*/ sRef s, constraintExprUnaryOpKind op)
673 t = constraintExpr_makeTermsRef (s);
674 ret = constraintExpr_makeUnaryOpConstraintExpr (t);
675 ret->data = constraintExprData_unaryExprSetOp (ret->data, op);
681 constraintExpr constraintExpr_makeSRefMaxRead( sRef s)
683 return (constraintExpr_makeSRefUnaryOp (s, MAXREAD) );
687 constraintExpr constraintExpr_makeSRefMaxset ( sRef s)
689 return (constraintExpr_makeSRefUnaryOp (s, MAXSET) );
693 constraintExpr constraintExpr_parseMakeUnaryOp (lltok op, constraintExpr cexpr)
696 ret = constraintExpr_makeUnaryOpConstraintExpr ( cexpr);
698 switch (lltok_getTok (op))
701 ret->data = constraintExprData_unaryExprSetOp (ret->data, MAXSET);
704 ret->data = constraintExprData_unaryExprSetOp (ret->data, MAXREAD);
707 llfatalbug (message ("Unhandled operation in constraint: %s", lltok_unparse (op)));
713 constraintExpr constraintExpr_makeMaxSetExpr (/*@exposed@*/ exprNode expr)
716 ret = constraintExpr_makeExprNode (expr);
718 ret = constraintExpr_makeMaxSetConstraintExpr (ret);
720 llassert (ret != NULL);
725 constraintExpr constraintExpr_makeMaxReadExpr (exprNode expr)
728 ret = constraintExpr_makeUnaryOpExprNode(expr);
729 ret->data = constraintExprData_unaryExprSetOp (ret->data, MAXREAD);
735 /*@unused@*/ static constraintExpr constraintExpr_makeMinSetExpr (/*@exposed@*/ exprNode expr)
738 ret = constraintExpr_makeUnaryOpExprNode(expr);
739 ret->data = constraintExprData_unaryExprSetOp (ret->data, MINSET);
744 /*@unused@*/ static constraintExpr constraintExpr_makeMinReadExpr (/*@exposed@*/ exprNode expr)
747 ret = constraintExpr_makeUnaryOpExprNode(expr);
748 ret->data = constraintExprData_unaryExprSetOp (ret->data, MINREAD);
754 constraintExpr constraintExpr_makeValueExpr (/*@exposed@*/ exprNode expr)
757 ret = constraintExpr_makeExprNode (expr);
761 /*@only@*/ /*@notnull@*/
762 constraintExpr constraintExpr_makeIntLiteral (long i)
766 ret = constraintExpr_alloc();
768 ret->data = dmalloc (sizeof *(ret->data) );
769 t = constraintTerm_makeIntLiteral (i);
770 ret->data = constraintExprData_termSetTerm (ret->data, t);
773 ret->origType = ctype_undefined;
779 constraintExpr constraintExpr_makeValueInt (int i)
781 return constraintExpr_makeIntLiteral (i);
785 /*@only@*/ /*@notnull@*/
786 /*@special@*/ static constraintExpr constraintExpr_makeBinaryOp (void)
787 /*@allocates result->data @*/ /*@sets result->kind @*/
790 ret = constraintExpr_alloc();
791 ret->kind = binaryexpr;
792 ret->data = dmalloc ( sizeof *(ret->data) );
794 ret->data->binaryOp.expr1 = constraintExpr_undefined;
795 ret->data->binaryOp.expr2 = constraintExpr_undefined;
801 static /*@notnull@*/ /*@only@*/ constraintExpr constraintExpr_makeBinaryOpConstraintExpr (/*@only@*/constraintExpr expr1, /*@only@*/ constraintExpr expr2)
806 ret = constraintExpr_makeBinaryOp();
807 ret->data = constraintExprData_binaryExprSetExpr1 (ret->data, expr1);
808 ret->data = constraintExprData_binaryExprSetExpr2 (ret->data, expr2);
809 ret->data = constraintExprData_binaryExprSetOp (ret->data, BINARYOP_UNDEFINED);
812 ret->origType = ctype_undefined;
818 constraintExpr constraintExpr_parseMakeBinaryOp (/*@only@*/ constraintExpr expr1, lltok op,/*@only@*/ constraintExpr expr2)
821 ret = constraintExpr_makeBinaryOpConstraintExpr (expr1, expr2);
823 if (lltok_getTok (op) == TPLUS)
825 ret->data = constraintExprData_binaryExprSetOp(ret->data, BINARYOP_PLUS);
827 else if (lltok_getTok (op) == TMINUS)
829 ret->data = constraintExprData_binaryExprSetOp(ret->data, BINARYOP_MINUS);
841 /*@unused@*/ static constraintExpr constraintExpr_makeBinaryOpExprNode (/*@exposed@*/ exprNode expr1, /*@exposed@*/ exprNode expr2)
844 constraintExpr sub1, sub2;
845 sub1 = constraintExpr_makeTermExprNode (expr1);
846 sub2 = constraintExpr_makeTermExprNode (expr2);
847 ret = constraintExpr_makeBinaryOpConstraintExpr(sub1, sub2);
852 static /*@notnull@*/ /*@only@*/
853 constraintExpr constraintExpr_makeBinaryOpConstraintExprIntLiteral (/*@only@*/ constraintExpr expr, int literal)
856 constraintExpr constExpr;
858 constExpr = constraintExpr_makeIntLiteral (literal);
859 ret = constraintExpr_makeBinaryOpConstraintExpr (expr, constExpr);
860 ret->data = constraintExprData_binaryExprSetOp(ret->data, BINARYOP_PLUS);
865 constraintExpr constraintExpr_makeDecConstraintExpr (/*@only@*/constraintExpr expr)
870 inc = constraintExpr_makeIntLiteral (1);
871 ret = constraintExpr_makeBinaryOpConstraintExpr (expr, inc);
872 ret->data = constraintExprData_binaryExprSetOp(ret->data, BINARYOP_MINUS);
877 /*@only@*/ constraintExpr constraintExpr_makeSubtractExpr (/*@only@*/ constraintExpr expr, /*@only@*/ constraintExpr addent)
881 DPRINTF ((message ("Making subtract expression") ) );
883 ret = constraintExpr_makeBinaryOpConstraintExpr (expr, addent);
884 ret->data = constraintExprData_binaryExprSetOp (ret->data, BINARYOP_MINUS);
889 constraintExpr constraintExpr_makeAddExpr (/*@only@*/
890 constraintExpr expr, /*@only@*/
891 constraintExpr addent)
895 DPRINTF ((message ("Doing addTerm simplification") ) );
897 ret = constraintExpr_makeBinaryOpConstraintExpr (expr, addent);
898 ret->data = constraintExprData_binaryExprSetOp (ret->data, BINARYOP_PLUS);
904 constraintExpr constraintExpr_makeIncConstraintExpr (/*@only@*/ constraintExpr expr)
909 inc = constraintExpr_makeIntLiteral (1);
910 ret = constraintExpr_makeBinaryOpConstraintExpr (expr, inc);
911 ret->data = constraintExprData_binaryExprSetOp(ret->data, BINARYOP_PLUS);
916 static cstring constraintExprUnaryOpKind_print (constraintExprUnaryOpKind op)
921 return message("maxSet");
923 return message("minSet");
925 return message("maxRead");
927 return message("minRead");
930 return message ("<(Unary OP OTHER>");
936 static cstring constraintExprBinaryOpKind_print (constraintExprBinaryOpKind op)
948 return message ("<binary OP Unknown>");
952 bool constraintExpr_similar (constraintExpr expr1, constraintExpr expr2)
954 constraintExprKind kind;
956 llassert (expr1 != NULL);
957 llassert (expr2 != NULL);
958 if (expr1->kind != expr2->kind)
966 return constraintTerm_similar (constraintExprData_termGetTerm(expr1->data),
967 constraintExprData_termGetTerm(expr2->data) );
968 /*@notreached@*/ break;
971 if (constraintExprData_unaryExprGetOp (expr1->data) != constraintExprData_unaryExprGetOp (expr2->data) )
974 return (constraintExpr_similar (
975 constraintExprData_unaryExprGetExpr (expr1->data),
976 constraintExprData_unaryExprGetExpr (expr2->data)
980 if (constraintExprData_binaryExprGetOp (expr1->data) != constraintExprData_binaryExprGetOp (expr2->data) )
983 if (! constraintExpr_similar (constraintExprData_binaryExprGetExpr1 (expr1->data),
984 constraintExprData_binaryExprGetExpr1 (expr2->data)) )
987 if (! constraintExpr_similar (constraintExprData_binaryExprGetExpr2 (expr1->data),
988 constraintExprData_binaryExprGetExpr2 (expr2->data)) )
1003 bool constraintExpr_same (constraintExpr expr1, constraintExpr expr2)
1005 constraintExprKind kind;
1007 llassert (expr1 != NULL);
1008 llassert (expr2 != NULL);
1009 if (expr1->kind != expr2->kind)
1017 return constraintTerm_similar (constraintExprData_termGetTerm(expr1->data),
1018 constraintExprData_termGetTerm(expr2->data) );
1019 /*@notreached@*/ break;
1022 if (constraintExprData_unaryExprGetOp (expr1->data) != constraintExprData_unaryExprGetOp (expr2->data) )
1025 return (constraintExpr_same (
1026 constraintExprData_unaryExprGetExpr (expr1->data),
1027 constraintExprData_unaryExprGetExpr (expr2->data)
1032 if (constraintExprData_binaryExprGetOp (expr1->data) != constraintExprData_binaryExprGetOp (expr2->data) )
1035 if (! constraintExpr_same (constraintExprData_binaryExprGetExpr1 (expr1->data),
1036 constraintExprData_binaryExprGetExpr1 (expr2->data)) )
1039 if (! constraintExpr_same (constraintExprData_binaryExprGetExpr2 (expr1->data),
1040 constraintExprData_binaryExprGetExpr2 (expr2->data)) )
1044 /*@notreached@*/ break;
1055 bool constraintExpr_search (/*@observer@*/ constraintExpr c, /*@observer@*/ constraintExpr old)
1058 constraintExprKind kind;
1059 constraintExpr temp;
1061 if ( constraintExpr_similar (c, old) )
1063 DPRINTF((message ("Found %q",
1064 constraintExpr_unparse(old)
1069 llassert (constraintExpr_isDefined (c) && constraintExpr_isDefined(old) );
1071 if ( !(constraintExpr_isDefined (c) && constraintExpr_isDefined(old) ) )
1081 temp = constraintExprData_unaryExprGetExpr (c->data);
1082 ret = ret || constraintExpr_search (temp, old);
1086 temp = constraintExprData_binaryExprGetExpr1 (c->data);
1087 ret = ret || constraintExpr_search(temp, old);
1089 temp = constraintExprData_binaryExprGetExpr2 (c->data);
1090 ret = ret || constraintExpr_search(temp, old);
1100 /*@only@*/ constraintExpr constraintExpr_searchandreplace (/*@only@*/ /*@unique@*/ constraintExpr c, /*@temp@*/ constraintExpr old, /*@temp@*/ constraintExpr newExpr )
1102 constraintExprKind kind;
1103 constraintExpr temp;
1106 llassert(constraintExpr_isDefined (newExpr) && (constraintExpr_isDefined (old) && constraintExpr_isDefined(c) ) );
1108 if ( constraintExpr_similar (c, old) )
1111 ctype newType, cType;
1116 ret = constraintExpr_copy (newExpr);
1117 llassert(constraintExpr_isDefined(ret) );
1118 /*drl if newExpr != NULL then ret will != NULL*/
1120 DPRINTF((message ("Replacing %s with %s",
1121 constraintExpr_unparse(old), constraintExpr_unparse(newExpr)
1124 if (constraintExpr_canGetCType(c) && constraintExpr_canGetCType(newExpr) )
1126 cType = constraintExpr_getCType(c);
1127 newType = constraintExpr_getCType(newExpr);
1129 if (ctype_match(cType,newType) )
1131 DPRINTF(( message("constraintExpr_searchandreplace: replacing "
1132 " %s with type %s with %s with type %s",
1133 constraintExpr_print(c), ctype_unparse(cType),
1134 constraintExpr_print(newExpr), ctype_unparse(newType)
1139 ret->origType = cType;
1143 if (constraintExpr_hasMaxSet(c) )
1145 if (constraintExpr_hasTypeChange(c))
1147 DPRINTF(( message("constraintExpr_searchandreplace: encountered "
1148 "MaxSet with changed type %s ",
1149 constraintExpr_print(c) )
1152 /*fix this with a conversation */
1153 ret = constraintExpr_adjustMaxSetForCast(ret, constraintExpr_getOrigType(c));
1156 constraintExpr_free(c);
1168 temp = constraintExprData_unaryExprGetExpr (c->data);
1169 temp = constraintExpr_copy(temp);
1170 temp = constraintExpr_searchandreplace (temp, old, newExpr);
1171 c->data = constraintExprData_unaryExprSetExpr (c->data, temp);
1175 temp = constraintExprData_binaryExprGetExpr1 (c->data);
1176 temp = constraintExpr_copy(temp);
1177 temp = constraintExpr_searchandreplace (temp, old, newExpr);
1178 c->data = constraintExprData_binaryExprSetExpr1 (c->data, temp);
1180 temp = constraintExprData_binaryExprGetExpr2 (c->data);
1181 temp = constraintExpr_copy(temp);
1182 temp = constraintExpr_searchandreplace (temp, old, newExpr);
1183 c->data = constraintExprData_binaryExprSetExpr2 (c->data, temp);
1191 /*@notnull@*/ static constraintExpr constraintExpr_simplifyChildren (/*@returned@*/ /*@notnull@*/ constraintExpr c)
1193 constraintExprKind kind;
1194 constraintExpr temp;
1203 temp = constraintExprData_unaryExprGetExpr (c->data);
1204 temp = constraintExpr_copy(temp);
1205 temp = constraintExpr_simplify (temp);
1206 c->data = constraintExprData_unaryExprSetExpr (c->data, temp);
1209 DPRINTF((message("constraintExpr_simplfiyChildren: simplify binary expression: %s",constraintExpr_unparse(c) ) ) );
1210 temp = constraintExprData_binaryExprGetExpr1 (c->data);
1211 temp = constraintExpr_copy(temp);
1212 temp = constraintExpr_simplify (temp);
1214 c->data = constraintExprData_binaryExprSetExpr1 (c->data, temp);
1216 temp = constraintExprData_binaryExprGetExpr2 (c->data);
1217 temp = constraintExpr_copy(temp);
1218 temp = constraintExpr_simplify (temp);
1220 c->data = constraintExprData_binaryExprSetExpr2 (c->data, temp);
1230 constraintExpr constraintExpr_setFileloc (/*@returned@*/ constraintExpr c, fileloc loc) /*@modifies c @*/
1233 constraintExpr temp;
1235 llassert(c != NULL);
1240 t = constraintExprData_termGetTerm (c->data);
1241 t = constraintTerm_copy(t);
1242 t = constraintTerm_setFileloc (t, loc);
1243 c->data = constraintExprData_termSetTerm (c->data, t);
1247 temp = constraintExprData_binaryExprGetExpr1 (c->data);
1248 temp = constraintExpr_copy(temp);
1249 temp = constraintExpr_setFileloc (temp, loc);
1250 c->data = constraintExprData_binaryExprSetExpr1 (c->data, temp);
1252 temp = constraintExprData_binaryExprGetExpr2 (c->data);
1253 temp = constraintExpr_copy(temp);
1254 temp = constraintExpr_setFileloc (temp, loc);
1255 c->data = constraintExprData_binaryExprSetExpr2 (c->data, temp);
1258 temp = constraintExprData_unaryExprGetExpr (c->data);
1259 temp = constraintExpr_copy(temp);
1260 temp = constraintExpr_setFileloc (temp, loc);
1261 c->data = constraintExprData_unaryExprSetExpr (c->data, temp);
1267 static /*@only@*/ constraintExpr constraintExpr_simplifybinaryExpr (/*@only@*/ /*@notnull@*/ constraintExpr c)
1269 constraintExpr e1, e2;
1270 constraintExprBinaryOpKind op;
1272 e1 = constraintExprData_binaryExprGetExpr1 (c->data);
1273 e2 = constraintExprData_binaryExprGetExpr2 (c->data);
1275 if (constraintExpr_canGetValue (e1) && constraintExpr_canGetValue(e2) )
1279 i = constraintExpr_getValue(e1) + constraintExpr_getValue (e2);
1280 constraintExpr_free(c);
1281 c = constraintExpr_makeIntLiteral (i);
1285 op = constraintExprData_binaryExprGetOp (c->data);
1286 if (op == BINARYOP_MINUS)
1287 if (constraintExpr_similar(e1, e2) )
1289 constraintExpr_free(c);
1290 c = constraintExpr_makeIntLiteral (0);
1298 this thing takes the lexpr and expr of a constraint and modifies lexpr
1299 and returns a (possiblly new) value for expr
1301 /* if lexpr is a binary express say x + y, we set lexpr to x and return a value for expr such as expr_old - y */
1303 /* the approach is a little Kludgy but seems to work. I should probably use something cleaner at some point ... */
1306 /*@only@*/ constraintExpr constraintExpr_solveBinaryExpr (constraintExpr lexpr, /*@only@*/ constraintExpr expr)
1308 constraintExpr expr1, expr2;
1309 constraintExprBinaryOpKind op;
1311 llassert(constraintExpr_isDefined (lexpr) && constraintExpr_isDefined (expr) );
1313 if (lexpr->kind != binaryexpr)
1316 expr2 = constraintExprData_binaryExprGetExpr2 (lexpr->data);
1317 expr1 = constraintExprData_binaryExprGetExpr1 (lexpr->data);
1319 op = constraintExprData_binaryExprGetOp (lexpr->data);
1321 expr1 = constraintExpr_copy(expr1);
1322 expr2 = constraintExpr_copy(expr2);
1324 llassert(constraintExpr_isDefined (expr1) && constraintExpr_isDefined (expr2) );
1326 /* drl possible problem : warning make sure this works */
1328 lexpr->kind = expr1->kind;
1329 sfree (lexpr->data);
1331 lexpr->data = copyExprData (expr1->data, expr1->kind);
1332 constraintExpr_free(expr1);
1334 if (op == BINARYOP_PLUS)
1335 expr = constraintExpr_makeSubtractExpr (expr, expr2);
1336 else if (op == BINARYOP_MINUS)
1337 expr = constraintExpr_makeAddExpr (expr, expr2);
1345 #warning this needs to be checked
1346 expr = constraintExpr_solveBinaryExpr (expr1, expr);
1348 expr = constraintExpr_solveBinaryExpr (expr2, expr);
1353 static /*@only@*/ constraintExpr constraintExpr_simplifyunaryExpr (/*@only@*/ constraintExpr c)
1357 llassert(constraintExpr_isDefined (c) );
1358 llassert (c->kind == unaryExpr);
1360 DPRINTF ((message ("Doing constraintExpr_simplifyunaryExpr:%s", constraintExpr_unparse (c) ) ) );
1362 if ((constraintExprData_unaryExprGetOp (c->data) != MAXSET) &&
1363 (constraintExprData_unaryExprGetOp (c->data) != MAXREAD) )
1368 exp = constraintExprData_unaryExprGetExpr (c->data);
1369 exp = constraintExpr_copy(exp);
1371 llassert(constraintExpr_isDefined (exp) );
1373 if (exp->kind == term)
1375 constraintTerm cterm;
1377 cterm = constraintExprData_termGetTerm (exp->data);
1379 if (constraintTerm_isStringLiteral(cterm) )
1382 val = constraintTerm_getStringLiteral (cterm);
1383 if (constraintExprData_unaryExprGetOp (c->data) == MAXSET)
1385 constraintExpr temp;
1387 temp = constraintExpr_makeIntLiteral ((int)strlen (cstring_toCharsSafe(val) ) );
1389 constraintExpr_free(c);
1390 constraintExpr_free(exp);
1395 if (constraintExprData_unaryExprGetOp (c->data) == MAXREAD)
1397 constraintExpr temp;
1399 temp = constraintExpr_makeIntLiteral ((int)strlen (cstring_toCharsSafe(val) ) );
1401 constraintExpr_free(c);
1402 constraintExpr_free(exp);
1409 /* slight Kludge to hanlde var [] = { , , };
1410 ** type syntax I don't think this is sounds but it should be good
1411 ** enough. The C stanrad is very confusing about initialization
1415 if (constraintTerm_isInitBlock(cterm) )
1417 constraintExpr temp;
1420 len = constraintTerm_getInitBlockLength(cterm);
1422 temp = constraintExpr_makeIntLiteral (len );
1424 constraintExpr_free(c);
1425 DPRINTF(( message("Changed too %q", constraintExpr_print(temp)
1427 constraintExpr_free(exp);
1431 constraintExpr_free(exp);
1435 if (exp->kind != binaryexpr)
1437 constraintExpr_free(exp);
1441 if (constraintExprData_binaryExprGetOp (exp->data) == BINARYOP_PLUS )
1444 /* if (constraintExpr_canGetValue (constraintExprData_binaryExprGetExpr2 (exp->data) ) ) */
1447 constraintExpr temp, temp2;
1449 DPRINTF ((message ("Doing fancy simplification") ) );
1451 temp = constraintExprData_binaryExprGetExpr2 (exp->data);
1453 temp2 = constraintExprData_binaryExprGetExpr1 (exp->data);
1455 temp2 = constraintExpr_copy(temp2);
1456 c->data = constraintExprData_unaryExprSetExpr (c->data, temp2);
1459 temp = constraintExpr_copy (temp);
1461 c = constraintExpr_makeSubtractExpr (c, temp);
1463 DPRINTF ((message ("Done fancy simplification:%s", constraintExpr_unparse (c) ) ) );
1467 DPRINTF ((message ("constraintExpr_simplifyUnaryExpr: Done simplification:%s", constraintExpr_unparse (c) ) ) );
1469 constraintExpr_free(exp);
1474 /*@only@*/ constraintExpr constraintExpr_simplify (/*@only@*/ constraintExpr c)
1476 constraintExprKind kind;
1480 DPRINTF ((message ("Doing constraintExpr_simplify:%s", constraintExpr_unparse (c) ) ) );
1485 /* drl: I think this is an Splint bug */
1487 llassert ( constraintExpr_isDefined (c) );
1488 if (constraintExpr_isUndefined (c) )
1490 return constraintExpr_undefined;
1493 ret = constraintExpr_copy(c);
1494 llassert(constraintExpr_isDefined (ret) );
1496 constraintExpr_free(c);
1498 ret = constraintExpr_simplifyChildren (ret);
1500 ret = constraintExpr_combineConstants (ret);
1502 ret = constraintExpr_simplifyChildren (ret);
1510 t = constraintExprData_termGetTerm (ret->data);
1511 t = constraintTerm_copy(t);
1512 t = constraintTerm_simplify (t);
1513 ret->data = constraintExprData_termSetTerm (ret->data, t);
1516 ret = constraintExpr_simplifyunaryExpr (ret);
1519 ret = constraintExpr_simplifybinaryExpr (ret);
1525 DPRINTF ((message ("constraintExpr_simplify returning :%s", constraintExpr_unparse (ret) ) ) );
1531 cstring constraintExpr_unparse (/*@temp@*/ /*@observer@*/ constraintExpr ex) /*@*/
1534 constraintExprKind kind;
1536 llassert (ex != NULL);
1544 if (context_getFlag (FLG_PARENCONSTRAINT) )
1546 st = message ("(%q) ", constraintTerm_print (constraintExprData_termGetTerm (ex->data)));
1550 st = message ("%q", constraintTerm_print (constraintExprData_termGetTerm (ex->data)));
1554 st = message ("%q(%q)",
1555 constraintExprUnaryOpKind_print (constraintExprData_unaryExprGetOp (ex->data) ),
1556 constraintExpr_unparse (constraintExprData_unaryExprGetExpr (ex->data) )
1560 if (context_getFlag (FLG_PARENCONSTRAINT) )
1562 st = message ("(%q) %q (%q)",
1563 constraintExpr_unparse (constraintExprData_binaryExprGetExpr1 (ex->data) ),
1564 constraintExprBinaryOpKind_print (constraintExprData_binaryExprGetOp (ex->data)
1566 constraintExpr_unparse (constraintExprData_binaryExprGetExpr2 (ex->data) )
1571 st = message ("%q %q %q",
1572 constraintExpr_unparse (constraintExprData_binaryExprGetExpr1 (ex->data) ),
1573 constraintExprBinaryOpKind_print (constraintExprData_binaryExprGetOp (ex->data)
1575 constraintExpr_unparse (constraintExprData_binaryExprGetExpr2 (ex->data) )
1582 st = message ("error");
1586 DPRINTF((message ("constraintExpr_unparse: '%s'",st) ) );
1590 constraintExpr constraintExpr_doSRefFixBaseParam (/*@returned@*/ constraintExpr expr, exprNodeList arglist)
1592 constraintTerm Term;
1593 constraintExprKind kind;
1594 constraintExpr expr1, expr2;
1595 constraintExprData data;
1596 llassert (expr != NULL);
1605 Term = constraintExprData_termGetTerm(data);
1606 Term = constraintTerm_copy(Term);
1608 Term = constraintTerm_doSRefFixBaseParam (Term, arglist);
1609 data = constraintExprData_termSetTerm(data, Term);
1612 expr1 = constraintExprData_unaryExprGetExpr (data);
1613 expr1 = constraintExpr_copy(expr1);
1615 expr1 = constraintExpr_doSRefFixBaseParam (expr1, arglist);
1616 data = constraintExprData_unaryExprSetExpr (data, expr1);
1619 expr1 = constraintExprData_binaryExprGetExpr1 (data);
1620 expr2 = constraintExprData_binaryExprGetExpr2 (data);
1622 expr1 = constraintExpr_copy(expr1);
1623 expr2 = constraintExpr_copy(expr2);
1625 expr1 = constraintExpr_doSRefFixBaseParam (expr1, arglist);
1626 data = constraintExprData_binaryExprSetExpr1 (data, expr1);
1627 expr2 = constraintExpr_doSRefFixBaseParam (expr2, arglist);
1628 data = constraintExprData_binaryExprSetExpr2 (data, expr2);
1639 / *@only@* / constraintExpr constraintExpr_doSRefFixInvarConstraint (/ *@only@* / constraintExpr expr, sRef s, ctype ct)
1641 constraintExprKind kind;
1642 constraintExpr expr1, expr2;
1643 constraintExprData data;
1644 llassert (expr != NULL);
1653 expr = doSRefFixInvarConstraintTerm (expr, s, ct);
1656 expr1 = constraintExprData_unaryExprGetExpr (data);
1657 expr1 = constraintExpr_copy(expr1);
1658 expr1 = constraintExpr_doSRefFixInvarConstraint (expr1, s, ct);
1659 data = constraintExprData_unaryExprSetExpr (data, expr1);
1662 expr1 = constraintExprData_binaryExprGetExpr1 (data);
1663 expr2 = constraintExprData_binaryExprGetExpr2 (data);
1665 expr1 = constraintExpr_copy(expr1);
1666 expr2 = constraintExpr_copy(expr2);
1668 expr1 = constraintExpr_doSRefFixInvarConstraint (expr1, s, ct);
1669 data = constraintExprData_binaryExprSetExpr1 (data, expr1);
1670 expr2 = constraintExpr_doSRefFixInvarConstraint (expr2, s, ct);
1671 data = constraintExprData_binaryExprSetExpr2 (data, expr2);
1682 /*@only@*/ constraintExpr constraintExpr_doSRefFixConstraintParam (/*@only@*/ constraintExpr expr, exprNodeList arglist) /*@modifies expr@*/
1684 constraintExprKind kind;
1685 constraintExpr expr1, expr2;
1686 constraintExprData data;
1687 llassert (expr != NULL);
1696 expr = doSRefFixConstraintParamTerm (expr, arglist);
1699 expr1 = constraintExprData_unaryExprGetExpr (data);
1700 expr1 = constraintExpr_copy(expr1);
1701 expr1 = constraintExpr_doSRefFixConstraintParam (expr1, arglist);
1702 data = constraintExprData_unaryExprSetExpr (data, expr1);
1705 expr1 = constraintExprData_binaryExprGetExpr1 (data);
1706 expr2 = constraintExprData_binaryExprGetExpr2 (data);
1708 expr1 = constraintExpr_copy(expr1);
1709 expr2 = constraintExpr_copy(expr2);
1711 expr1 = constraintExpr_doSRefFixConstraintParam (expr1, arglist);
1712 data = constraintExprData_binaryExprSetExpr1 (data, expr1);
1713 expr2 = constraintExpr_doSRefFixConstraintParam (expr2, arglist);
1714 data = constraintExprData_binaryExprSetExpr2 (data, expr2);
1724 /*@only@*/ constraintExpr constraintExpr_doFixResult (/*@only@*/ constraintExpr expr, /*@observer@*/ exprNode fcnCall)
1726 constraintExprKind kind;
1727 constraintExpr expr1, expr2;
1728 constraintExprData data;
1729 llassert (expr != NULL);
1738 expr = doFixResultTerm (expr, fcnCall);
1741 expr1 = constraintExprData_unaryExprGetExpr (data);
1742 expr1 = constraintExpr_copy(expr1);
1744 expr1 = constraintExpr_doFixResult (expr1, fcnCall);
1745 data = constraintExprData_unaryExprSetExpr (data, expr1);
1748 expr1 = constraintExprData_binaryExprGetExpr1 (data);
1749 expr2 = constraintExprData_binaryExprGetExpr2 (data);
1751 expr1 = constraintExpr_copy(expr1);
1752 expr2 = constraintExpr_copy(expr2);
1754 expr1 = constraintExpr_doFixResult (expr1, fcnCall);
1755 data = constraintExprData_binaryExprSetExpr1 (data, expr1);
1756 expr2 = constraintExpr_doFixResult (expr2, fcnCall);
1757 data = constraintExprData_binaryExprSetExpr2 (data, expr2);
1767 cstring constraintExpr_print (constraintExpr expr) /*@*/
1769 return constraintExpr_unparse (expr);
1772 bool constraintExpr_hasMaxSet (constraintExpr expr) /*@*/
1776 t = constraintExpr_unparse(expr);
1778 if (cstring_containsLit(t, "maxSet") != NULL )
1792 /*returns 1 0 -1 like strcmp
1798 int constraintExpr_compare (constraintExpr expr1, constraintExpr expr2)
1800 long value1, value2;
1802 if (constraintExpr_similar (expr1, expr2) )
1807 value1 = constraintExpr_getValue(expr1);
1808 value2 = constraintExpr_getValue(expr2);
1810 if (value1 > value2)
1813 if (value1 == value2)
1820 long constraintExpr_getValue (constraintExpr expr)
1822 llassert (constraintExpr_isDefined(expr) );
1823 llassert (expr->kind == term);
1825 return (constraintTerm_getValue (constraintExprData_termGetTerm (expr->data)));
1828 bool constraintExpr_canGetValue (constraintExpr expr)
1830 llassert ( constraintExpr_isDefined (expr) );
1831 if (constraintExpr_isUndefined (expr) )
1839 return constraintTerm_canGetValue (constraintExprData_termGetTerm (expr->data) );
1848 fileloc constraintExpr_getFileloc (constraintExpr expr)
1852 constraintExprKind kind;
1854 llassert ( constraintExpr_isDefined (expr) );
1855 if (constraintExpr_isUndefined (expr) )
1857 return fileloc_undefined;
1866 t = constraintExprData_termGetTerm (expr->data);
1867 return (constraintTerm_getFileloc (t) );
1871 e = constraintExprData_unaryExprGetExpr (expr->data);
1872 return (constraintExpr_getFileloc (e) );
1876 e = constraintExprData_binaryExprGetExpr1 (expr->data);
1877 return (constraintExpr_getFileloc (e) );
1882 return (fileloc_undefined);
1885 /*drl moved from constriantTerm.c 5/20/001*/
1886 static /*@only@*/ constraintExpr
1887 doFixResultTerm (/*@only@*/ constraintExpr e, /*@exposed@*/ exprNode fcnCall)
1893 constraintExprData data;
1894 constraintExprKind kind;
1898 llassert(constraintExpr_isDefined (e) );
1903 llassert(kind == term);
1905 t = constraintExprData_termGetTerm (data);
1906 llassert (constraintTerm_isDefined(t) );
1909 switch (constraintTerm_getKind(t) )
1917 s = constraintTerm_getSRef(t);
1918 if (sRef_isResult (s))
1920 ret = constraintExpr_makeExprNode(fcnCall);
1921 constraintExpr_free(e);
1937 / *@only@* / static constraintExpr
1938 doSRefFixInvarConstraintTerm (/ *@only@* / constraintExpr e,
1943 constraintExprData data = e->data;
1945 constraintExprKind kind = e->kind;
1949 llassert(kind == term);
1951 t = constraintExprData_termGetTerm (data);
1952 llassert (constraintTerm_isDefined(t) );
1956 DPRINTF (("Fixing: %s", constraintExpr_print (e)));
1958 switch (constraintTerm_getKind(t))
1961 DPRINTF((message ("%q @ %q ", constraintTerm_print(t),
1962 fileloc_unparse (constraintTerm_getFileloc(t) ) ) ));
1965 DPRINTF((message (" %q ", constraintTerm_print (t)) ));
1969 / * evans 2001-07-24: constants should use the original term * /
1970 if (!constraintTerm_canGetValue (t))
1973 DPRINTF ((message("Doing sRef_fixInvarConstraint for %q ",
1974 constraintTerm_print (t) ) ));
1976 snew = fixSref (ct, s, constraintTerm_getSRef(t));
1978 ret = constraintExpr_makeTermsRef(snew);
1980 constraintExpr_free (e);
1982 DPRINTF (( message("After Doing sRef_fixConstraintParam constraintExpr is %q ",
1983 constraintExpr_print (ret) ) ));
1984 / *@-branchstate@* /
1985 } / *@=branchstate@* /
1997 /*drl moved from constriantTerm.c 5/20/001*/
1998 /*@only@*/ static constraintExpr
1999 doSRefFixConstraintParamTerm (/*@only@*/ constraintExpr e, /*@observer@*/ /*@temp@*/ exprNodeList arglist)
2003 constraintExprData data;
2005 constraintExprKind kind;
2010 llassert(constraintExpr_isDefined (e) );
2018 llassert(kind == term);
2020 t = constraintExprData_termGetTerm (data);
2021 llassert (constraintTerm_isDefined(t) );
2025 DPRINTF (("Fixing: %s", constraintExpr_print (e)));
2027 switch (constraintTerm_getKind(t))
2030 DPRINTF((message ("%q @ %q ", constraintTerm_print(t),
2031 fileloc_unparse (constraintTerm_getFileloc(t) ) ) ));
2034 DPRINTF((message (" %q ", constraintTerm_print (t)) ));
2038 /* evans 2001-07-24: constants should use the original term */
2039 if (!constraintTerm_canGetValue (t))
2041 DPRINTF ((message("Doing sRef_fixConstraintParam for %q ",
2042 constraintTerm_print (t) ) ));
2043 ret = sRef_fixConstraintParam (constraintTerm_getSRef(t), arglist);
2045 constraintExpr_free (e);
2047 DPRINTF (( message("After Doing sRef_fixConstraintParam constraintExpr is %q ",
2048 constraintExpr_print (ret) ) ));
2050 } /*@=branchstate@*/
2063 bool constraintExpr_includesTerm (constraintExpr expr, constraintTerm term)
2065 if (constraintTerm_hasTerm (expr->term, term) )
2068 if ((expr->expr) != NULL)
2070 return ( constraintExpr_includesTerm (expr->expr, term) );
2077 /*drl added 6/11/01 */
2078 bool constraintExpr_isBinaryExpr (/*@observer@*/ constraintExpr c)
2081 llassert(constraintExpr_isDefined (c) );
2083 if ( ! (constraintExpr_isDefined (c) ) )
2086 if (c->kind == binaryexpr)
2093 /*drl added 8/08/001 */
2094 bool constraintExpr_isTerm (/*@observer@*/ constraintExpr c) /*@*/
2096 llassert(constraintExpr_isDefined (c) );
2098 if (c->kind == term)
2105 /*@observer@*/ /*@temp@*/ constraintTerm constraintExpr_getTerm ( /*@temp@*/ /*@observer@*/ constraintExpr c) /*@*/
2107 constraintTerm term;
2109 llassert(constraintExpr_isDefined (c) );
2111 llassert(constraintExpr_isTerm(c) );
2113 term = constraintExprData_termGetTerm(c->data);
2118 static void binaryExpr_dump (/*@observer@*/ constraintExprData data, FILE *f)
2120 constraintExpr expr1;
2121 constraintExprBinaryOpKind binaryOp;
2122 constraintExpr expr2;
2125 binaryOp = constraintExprData_binaryExprGetOp (data);
2127 fprintf(f, "%d\n", (int) binaryOp);
2129 expr1 = constraintExprData_binaryExprGetExpr1 (data);
2130 expr2 = constraintExprData_binaryExprGetExpr2 (data);
2134 constraintExpr_dump(expr1, f);
2137 constraintExpr_dump(expr2, f);
2141 static constraintExpr binaryExpr_undump (FILE *f)
2143 constraintExpr expr1;
2144 constraintExprBinaryOpKind binaryOp;
2145 constraintExpr expr2;
2154 os = mstring_create (MAX_DUMP_LINE_LENGTH);
2156 str = fgets(os, MAX_DUMP_LINE_LENGTH, f);
2158 if (! mstring_isDefined(str) )
2160 llfatalbug(message("Library file is corrupted") );
2163 binaryOp = (constraintExprBinaryOpKind) reader_getInt(&str);
2165 str = fgets(os, MAX_DUMP_LINE_LENGTH, f);
2167 if (! mstring_isDefined(str) )
2169 llfatalbug(message("Library file is corrupted") );
2172 reader_checkChar (&str, 'e');
2173 reader_checkChar (&str, '1');
2175 expr1 = constraintExpr_undump (f);
2177 str = fgets(os, MAX_DUMP_LINE_LENGTH, f);
2179 reader_checkChar (&str, 'e');
2180 reader_checkChar (&str, '2');
2182 expr2 = constraintExpr_undump (f);
2184 ret = constraintExpr_makeBinaryOpConstraintExpr (expr1, expr2);
2185 ret->data = constraintExprData_binaryExprSetOp(ret->data, binaryOp);
2193 static void unaryExpr_dump (/*@observer@*/ constraintExprData data, FILE *f)
2196 constraintExpr expr;
2197 constraintExprUnaryOpKind unaryOp;
2199 unaryOp = constraintExprData_unaryExprGetOp (data);
2201 fprintf(f, "%d\n", (int) unaryOp);
2203 expr = constraintExprData_unaryExprGetExpr (data);
2205 constraintExpr_dump(expr, f);
2208 static constraintExpr unaryExpr_undump ( FILE *f)
2211 constraintExpr expr;
2212 constraintExprUnaryOpKind unaryOp;
2218 str = mstring_create (MAX_DUMP_LINE_LENGTH);
2220 str = fgets(os, MAX_DUMP_LINE_LENGTH, f);
2222 if (! mstring_isDefined(str) )
2224 llfatalbug(message("Library file is corrupted") );
2227 unaryOp = (constraintExprUnaryOpKind) reader_getInt(&str);
2229 expr = constraintExpr_undump (f);
2231 ret = constraintExpr_makeUnaryOp (expr, unaryOp);
2238 void constraintExpr_dump (/*@observer@*/ constraintExpr expr, FILE *f)
2240 constraintExprKind kind;
2244 llassert(constraintExpr_isDefined(expr) );
2246 DPRINTF((message("constraintExpr_dump:: dumping constraintExpr %s",
2247 constraintExpr_unparse(expr)
2252 fprintf(f,"%d\n", (int) kind);
2257 t = constraintExprData_termGetTerm (expr->data);
2258 constraintTerm_dump (t, f);
2261 unaryExpr_dump (expr->data, f);
2264 binaryExpr_dump (expr->data, f);
2269 /*@only@*/ constraintExpr constraintExpr_undump (FILE *f)
2271 constraintExprKind kind;
2278 s = mstring_create (MAX_DUMP_LINE_LENGTH);
2282 s = fgets(os, MAX_DUMP_LINE_LENGTH, f);
2284 if (! mstring_isDefined(s) )
2286 llfatalbug(message("Library file is corrupted") );
2289 kind = (constraintExprKind) reader_getInt(&s);
2296 t = constraintTerm_undump (f);
2297 ret = constraintExpr_makeTerm(t);
2300 ret = unaryExpr_undump (f);
2303 ret = binaryExpr_undump (f);
2311 int constraintExpr_getDepth (constraintExpr ex)
2315 constraintExprKind kind;
2317 llassert (ex != NULL);
2327 ret = constraintExpr_getDepth (constraintExprData_unaryExprGetExpr (ex->data) );
2333 ret = constraintExpr_getDepth (constraintExprData_binaryExprGetExpr1 (ex->data) );
2337 ret += constraintExpr_getDepth (constraintExprData_binaryExprGetExpr2 (ex->data) );
2348 bool constraintExpr_canGetCType (constraintExpr e) /*@*/
2350 if (constraintExpr_isUndefined(e) )
2353 if (e->kind == term)
2359 DPRINTF(( message("constraintExpr_canGetCType: can't get type for %s ",
2360 constraintExpr_print(e) ) ));
2365 ctype constraintExpr_getCType (constraintExpr e) /*@*/
2369 llassert(constraintExpr_isDefined(e) );
2371 llassert(constraintExpr_canGetCType(e) );
2376 t = constraintExprData_termGetTerm (e->data);
2377 return (constraintTerm_getCType(t) );
2378 /* assume that a unary expression will be an int ... */
2380 return ctype_signedintegral;
2382 /* drl for just return type of first operand */
2385 constraintExpr_getCType
2386 (constraintExprData_binaryExprGetExpr1 (e->data) )
2394 /* drl add 10-5-001 */
2396 static bool constraintExpr_hasTypeChange(constraintExpr e)
2398 llassert(constraintExpr_isDefined(e) );
2399 if (constraintExpr_isDefined((e)) && (e->ct == TRUE) )
2404 if (e->kind == unaryExpr)
2406 if (constraintExprData_unaryExprGetOp (e->data) == MAXSET)
2410 ce = constraintExprData_unaryExprGetExpr(e->data);
2412 return (constraintExpr_hasTypeChange(ce) );
2419 /* drl add 10-5-001 */
2421 static ctype constraintExpr_getOrigType (constraintExpr e)
2424 llassert(constraintExpr_isDefined(e) );
2425 llassert(constraintExpr_hasTypeChange(e) );
2433 if (e->kind == unaryExpr)
2435 if (constraintExprData_unaryExprGetOp (e->data) == MAXSET)
2439 ce = constraintExprData_unaryExprGetExpr(e->data);
2441 return (constraintExpr_getOrigType(ce) );
2449 /*drl added these around 10/18/001*/
2451 static /*@only@*/ constraintExpr constraintExpr_div (/*@only@*/ constraintExpr e, /*@unused@*/ ctype ct)
2457 /*@access exprNode@*/
2458 static /*@only@*/ constraintExpr constraintTerm_simpleDivTypeExprNode(/*@only@*/ constraintExpr e, ctype ct)
2461 exprNode t1, t2, expr;
2465 llassert(constraintExpr_isDefined(e) );
2468 message("constraintTerm_simpleDivTypeExprNode e=%s, ct=%s",
2469 constraintExpr_print(e), ctype_unparse(ct)
2473 t = constraintExprData_termGetTerm(e->data);
2475 expr = constraintTerm_getExprNode(t);
2477 llassert(constraintExpr_isDefined(e) );
2478 llassert(exprNode_isDefined(expr) );
2480 if (expr->kind == XPR_OP)
2484 t1 = exprData_getOpA (data);
2485 t2 = exprData_getOpB (data);
2486 tok = exprData_getOpTok (data);
2487 if (lltok_isMult(tok) )
2489 llassert(exprNode_isDefined(t1) && exprNode_isDefined(t2) );
2490 /*drl 3/2/2003 we know this from the fact that it's a
2491 multiplication operation...*/
2493 if ((t1->kind == XPR_SIZEOF) || (t1->kind == XPR_SIZEOFT) )
2497 if (t1->kind == XPR_SIZEOFT)
2499 ct2 = qtype_getType (exprData_getType (t1->edata));
2505 tempE = exprData_getSingle (t1->edata);
2507 ct2 = exprNode_getType (tempE);
2509 if (ctype_match (ctype_makePointer(ct2), ct) )
2511 /* this is a bit sloopy but ... */
2512 constraintExpr_free(e);
2513 return constraintExpr_makeExprNode(t2);
2518 else if ((t2->kind == XPR_SIZEOF) || (t2->kind == XPR_SIZEOFT) )
2522 if (t2->kind == XPR_SIZEOFT)
2524 ct2 = qtype_getType (exprData_getType (t2->edata));
2531 exprTemp = exprData_getSingle (t2->edata);
2533 llassert(exprNode_isDefined(exprTemp) );
2534 eDTemp = exprTemp->edata;
2536 ct2 = qtype_getType (exprData_getType(eDTemp ) );
2539 if (ctype_match (ctype_makePointer(ct2),ct) )
2541 /* sloopy way to do this... */ /*@i22*/
2542 constraintExpr_free(e);
2543 return constraintExpr_makeExprNode(t1);
2553 return (constraintExpr_div (e, ct) );
2555 /*@noaccess exprNode@*/
2557 static /*@only@*/ constraintExpr simpleDivType (/*@only@*/ constraintExpr e, ctype ct)
2560 DPRINTF(( (message("simpleDiv got %s ", constraintExpr_unparse(e) ) )
2563 llassert(constraintExpr_isDefined(e) );
2572 t = constraintExprData_termGetTerm(e->data);
2575 if (constraintTerm_isExprNode (t) )
2577 return constraintTerm_simpleDivTypeExprNode(e, ct);
2579 /* search for * size of ct and remove */
2581 return constraintExpr_div (e, ct);
2586 constraintExpr temp;
2588 temp = constraintExprData_binaryExprGetExpr1 (e->data);
2589 temp = constraintExpr_copy(temp);
2590 temp = simpleDivType (temp, ct);
2592 e->data = constraintExprData_binaryExprSetExpr1 (e->data, temp);
2594 temp = constraintExprData_binaryExprGetExpr2 (e->data);
2595 temp = constraintExpr_copy(temp);
2596 temp = simpleDivType (temp, ct);
2597 e->data = constraintExprData_binaryExprSetExpr2 (e->data, temp);
2599 DPRINTF(( (message("simpleDiv binaryexpr returning %s ", constraintExpr_unparse(e) ) )
2605 return constraintExpr_div (e, ct);
2612 static /*@only@*/ constraintExpr constraintExpr_adjustMaxSetForCast(/*@only@*/ constraintExpr e, ctype ct)
2615 DPRINTF(( (message("constraintExpr_adjustMaxSetForCast got %s ", constraintExpr_unparse(e) ) )
2618 e = constraintExpr_makeIncConstraintExpr(e);
2620 e = constraintExpr_simplify(e);
2623 e = simpleDivType (e, ct);
2625 e = constraintExpr_makeDecConstraintExpr(e);
2627 e = constraintExpr_simplify(e);
2629 DPRINTF(( (message("constraintExpr_adjustMaxSetForCast returning %s ", constraintExpr_unparse(e) ) )
2636 bool constraintExpr_isConstantOnly ( constraintExpr e )
2638 DPRINTF(( (message("constraintExpr_isConstantOnly %s ",
2639 constraintExpr_unparse(e) ) )
2642 llassert(constraintExpr_isDefined(e) );
2650 t = constraintExprData_termGetTerm(e->data);
2653 if (constraintTerm_isConstantOnly (t) )
2665 constraintExpr temp1, temp2;
2667 temp1 = constraintExprData_binaryExprGetExpr1 (e->data);
2669 temp2 = constraintExprData_binaryExprGetExpr2 (e->data);
2671 if (constraintExpr_isConstantOnly(temp1) &&
2672 constraintExpr_isConstantOnly(temp2) )
2684 constraintExpr temp;
2686 temp = constraintExprData_unaryExprGetExpr (e->data );
2688 if (constraintExpr_isConstantOnly(temp) )