2 ** Splint - annotation-assisted static program checker
3 ** Copyright (C) 1994-2002 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@*/ 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 static constraintExpr removeZero (/*@returned@*/ constraintExpr expr)
150 constraintExpr expr1, expr2;
154 constraintExprBinaryOpKind op;
156 constraintExprBinaryOpKind tempOp;
158 if (!isZeroBinaryOp(expr) )
161 llassert (expr != NULL); /* evans 2001-07-18 */
163 expr1 = constraintExprData_binaryExprGetExpr1(expr->data);
164 expr2 = constraintExprData_binaryExprGetExpr2(expr->data);
165 op = constraintExprData_binaryExprGetOp(expr->data);
167 llassert( constraintExpr_isBinaryExpr(expr2) );
169 temp = constraintExprData_binaryExprGetExpr2 (expr2->data);
170 temp = constraintExpr_copy (temp);
172 tempOp = constraintExprData_binaryExprGetOp (expr2->data);
174 if (op == BINARYOP_PLUS)
176 else if (op == BINARYOP_MINUS)
178 if (tempOp == BINARYOP_PLUS)
180 else if (tempOp == BINARYOP_MINUS)
188 expr->data = constraintExprData_binaryExprSetExpr2(expr->data, temp);
189 expr->data = constraintExprData_binaryExprSetOp(expr->data, op);
195 /*@only@*/ constraintExpr constraintExpr_propagateConstants (/*@only@*/ constraintExpr expr,
196 /*@out@*/ bool * propagate,
197 /*@out@*/ int *literal)
199 constraintExpr expr1;
200 constraintExpr expr2;
201 bool propagate1, propagate2;
202 int literal1, literal2;
203 constraintExprBinaryOpKind op;
215 llassert (expr != NULL);
217 /* we simplify unaryExpr elsewhere */
218 if (expr->kind != binaryexpr)
221 op = constraintExprData_binaryExprGetOp (expr->data);
223 DPRINTF((message("constraintExpr_propagateConstants: binaryexpr: %s", constraintExpr_unparse(expr) ) ) );
225 expr = removeZero(expr);
227 expr1 = constraintExprData_binaryExprGetExpr1(expr->data);
228 expr2 = constraintExprData_binaryExprGetExpr2(expr->data);
230 expr1 = constraintExpr_copy(expr1);
231 expr2 = constraintExpr_copy(expr2);
233 expr1 = constraintExpr_propagateConstants (expr1, &propagate1, &literal1);
234 expr2 = constraintExpr_propagateConstants (expr2, &propagate2, &literal2);
236 expr1 = removeZero(expr1);
237 expr2 = removeZero(expr2);
240 *propagate = propagate1 || propagate2;
242 if (op == BINARYOP_PLUS)
243 *literal = literal1 + literal2;
244 else if (op == BINARYOP_MINUS)
245 *literal = literal1 - literal2;
249 if ( constraintExpr_isLit (expr1) && constraintExpr_isLit (expr2) )
252 t1 = constraintExpr_getValue (expr1);
253 t2 = constraintExpr_getValue (expr2);
254 llassert(*propagate == FALSE);
257 constraintExpr_free (expr);
258 constraintExpr_free (expr1);
259 constraintExpr_free (expr2);
261 if (op == BINARYOP_PLUS )
262 return (constraintExpr_makeIntLiteral ((t1+t2) ));
263 else if (op == BINARYOP_MINUS)
264 return (constraintExpr_makeIntLiteral ((t1-t2) ));
270 if (constraintExpr_isLit (expr1) )
274 *literal += constraintExpr_getValue (expr1);
276 if (op == BINARYOP_PLUS)
278 constraintExpr_free(expr1);
279 constraintExpr_free(expr);
282 else if (op == BINARYOP_MINUS)
287 /* this is an ugly kludge to deal with not
288 having a unary minus operation...*/
290 temp = constraintExpr_makeIntLiteral (0);
291 temp = constraintExpr_makeSubtractExpr (temp, expr2);
293 constraintExpr_free(expr1);
294 constraintExpr_free(expr);
300 BADBRANCH; /* evans 2001-07-18 */
304 if (constraintExpr_isLit (expr2) )
308 if ( op == BINARYOP_PLUS )
309 *literal += constraintExpr_getValue (expr2);
310 else if (op == BINARYOP_MINUS)
311 *literal -= constraintExpr_getValue (expr2);
316 constraintExpr_free(expr2);
317 constraintExpr_free(expr);
321 DPRINTF((message("constraintExpr_propagateConstants returning: %s", constraintExpr_unparse(expr) ) ) );
323 expr->data = constraintExprData_binaryExprSetExpr1 (expr->data, expr1);
324 expr->data = constraintExprData_binaryExprSetExpr2 (expr->data, expr2);
326 expr = removeZero(expr);
330 /*@only@*/ static constraintExpr constraintExpr_combineConstants (/*@only@*/ constraintExpr expr ) /*@modifies expr@*/
335 DPRINTF ((message ("Before combine %s", constraintExpr_unparse(expr) ) ) );
336 expr = constraintExpr_propagateConstants (expr, &propagate, &literal);
345 ret = constraintExpr_makeBinaryOpConstraintExprIntLiteral (expr, literal);
349 DPRINTF ((message ("After combine %s", constraintExpr_unparse(expr) ) ) );
354 static constraintExpr constraintExpr_alloc (void) /*@post:isnull result->data@*/
357 ret = dmalloc (sizeof (*ret) );
361 ret->origType = ctype_undefined;
365 /*@only@*/ static constraintExprData copyExprData (/*@observer@*/ constraintExprData data, constraintExprKind kind)
367 constraintExprData ret;
368 llassert(constraintExprData_isDefined(data));
373 ret = constraintExprData_copyBinaryExpr(data);
376 ret = constraintExprData_copyUnaryExpr(data);
379 ret = constraintExprData_copyTerm(data);
387 constraintExpr constraintExpr_copy (constraintExpr expr)
390 ret = constraintExpr_alloc ();
391 ret->kind = expr->kind;
393 ret->data = copyExprData (expr->data, expr->kind);
395 ret->origType = expr->origType;
400 /*@only@*/ static constraintExpr oldconstraintExpr_makeTermExprNode ( /*@dependent@*/ exprNode e)
404 ret = constraintExpr_alloc();
406 ret->data = dmalloc (sizeof *(ret->data) );
407 t = constraintTerm_makeExprNode (e);
408 ret->data = constraintExprData_termSetTerm (ret->data, t);
410 ret->origType = ctype_undefined;
415 /*@access exprNode@*/ /*!!!*/
417 constraintExpr constraintExpr_makeExprNode (exprNode e)
420 constraintExpr ret, ce1, ce2;
425 llassert (exprNode_isDefined(e) );
432 t = exprData_getSingle (data);
433 s = exprNode_getSref (t);
434 if (sRef_isFixedArray(s) )
438 size = (int) sRef_getArraySize(s);
439 ret = constraintExpr_makeIntLiteral (size);
443 DPRINTF ((message ("could not determine the size of %s", exprNode_unparse (e) ) ) );
444 ret = oldconstraintExpr_makeTermExprNode (e);
449 DPRINTF ((message ("Examining operation %s", exprNode_unparse (e) ) ) );
450 t1 = exprData_getOpA (data);
451 t2 = exprData_getOpB (data);
452 tok = exprData_getOpTok (data);
454 if (lltok_isPlus_Op (tok) || lltok_isMinus_Op (tok) )
456 ce1 = constraintExpr_makeExprNode (t1);
457 ce2 = constraintExpr_makeExprNode (t2);
458 ret = constraintExpr_parseMakeBinaryOp (ce1, tok, ce2);
463 /* uncomment this block to activate the cheesy heuristic
464 for handling sizeof expressions
469 We handle expressions containing sizeof with the rule
470 (sizeof type ) * Expr = Expr
472 This is the total wronge way to do this but...
473 it may be better than nothing
478 else if (lltok_isMult(tok) )
480 if ((t1->kind == XPR_SIZEOF) || (t1->kind == XPR_SIZEOFT) )
482 ret = constraintExpr_makeExprNode(t2);
484 else if ((t2->kind == XPR_SIZEOF) || (t2->kind == XPR_SIZEOFT) )
486 ret = constraintExpr_makeExprNode(t1);
490 ret = oldconstraintExpr_makeTermExprNode (e);
495 ret = oldconstraintExpr_makeTermExprNode (e);
499 t = exprData_getUopNode (data);
500 ret = constraintExpr_makeExprNode (t);
504 t = exprData_getUopNode (data);
505 tok = exprData_getUopTok (data);
506 if (lltok_isInc_Op (tok) )
509 temp = constraintExpr_makeExprNode(t);
510 ret = constraintExpr_makeIncConstraintExpr(temp);
512 else if (lltok_isDec_Op (tok) )
515 temp = constraintExpr_makeExprNode(t);
516 ret = constraintExpr_makeDecConstraintExpr(temp);
519 ret = oldconstraintExpr_makeTermExprNode (e);
523 t = exprData_getUopNode (data);
524 ret = constraintExpr_makeExprNode (t);
527 t = exprData_getCastNode (data);
528 ret = constraintExpr_makeExprNode (t);
531 t = exprData_getPairA(data);
532 ret = constraintExpr_makeExprNode(t);
533 /*@i3434*/ /* drl: I'm not sure if this is right. I'm adding a break to quiet Splint */
536 ret = oldconstraintExpr_makeTermExprNode (e);
541 /*@noaccess exprNode@*/ /*!!!*/
543 /*@only@*/ constraintExpr constraintExpr_makeTermExprNode (/*@exposed@*/ exprNode e)
545 return oldconstraintExpr_makeTermExprNode(e);
548 static constraintExpr constraintExpr_makeTerm (/*@only@*/ constraintTerm t)
552 ret = constraintExpr_alloc();
554 ret->data = dmalloc (sizeof *(ret->data) );
555 ret->data->term = NULL;
556 ret->data = constraintExprData_termSetTerm (ret->data, t);
558 ret->origType = ctype_undefined;
563 constraintExpr constraintExpr_makeTermsRef (/*@temp@*/ sRef s)
567 ret = constraintExpr_alloc();
569 ret->data = dmalloc (sizeof *(ret->data) );
570 t = constraintTerm_makesRef (s);
571 ret->data = constraintExprData_termSetTerm (ret->data, t);
574 ret->origType = ctype_undefined;
579 /*@notnull@*/ /*@special@*/ static constraintExpr makeUnaryOpGeneric (void) /*@allocates result->data@*/ /*@defines result->kind@*/
582 ret = constraintExpr_alloc();
583 ret->kind = unaryExpr;
584 ret->data = dmalloc ( sizeof *(ret->data) );
585 ret->data->unaryOp.expr = constraintExpr_undefined;
589 /*@only@*/ static constraintExpr constraintExpr_makeUnaryOpConstraintExpr (/*@only@*/ constraintExpr cexpr)
592 ret = makeUnaryOpGeneric();
596 ret->data = constraintExprData_unaryExprSetExpr (ret->data, cexpr);
597 ret->data = constraintExprData_unaryExprSetOp (ret->data, UNARYOP_UNDEFINED);
606 /*@only@*/ static constraintExpr constraintExpr_makeUnaryOp (/*@only@*/ constraintExpr cexpr, constraintExprUnaryOpKind Op )
609 ret = makeUnaryOpGeneric();
611 ret->data = constraintExprData_unaryExprSetExpr (ret->data, cexpr);
612 ret->data = constraintExprData_unaryExprSetOp (ret->data, Op);
615 ret->origType = ctype_undefined;
621 static constraintExpr constraintExpr_makeMaxSetConstraintExpr (/*@only@*/ constraintExpr c)
624 ret = constraintExpr_makeUnaryOp (c, MAXSET);
629 static constraintExpr constraintExpr_makeUnaryOpExprNode (/*@exposed@*/ exprNode expr)
633 sub = constraintExpr_makeExprNode (expr);
634 ret = constraintExpr_makeUnaryOpConstraintExpr(sub);
642 static constraintExpr constraintExpr_makeSRefUnaryOp (/*@temp@*/ /*@observer@*/ sRef s, constraintExprUnaryOpKind op)
647 t = constraintExpr_makeTermsRef (s);
648 ret = constraintExpr_makeUnaryOpConstraintExpr (t);
649 ret->data = constraintExprData_unaryExprSetOp (ret->data, op);
655 constraintExpr constraintExpr_makeSRefMaxRead( sRef s)
657 return (constraintExpr_makeSRefUnaryOp (s, MAXREAD) );
661 constraintExpr constraintExpr_makeSRefMaxset ( sRef s)
663 return (constraintExpr_makeSRefUnaryOp (s, MAXSET) );
667 constraintExpr constraintExpr_parseMakeUnaryOp (lltok op, constraintExpr cexpr)
670 ret = constraintExpr_makeUnaryOpConstraintExpr ( cexpr);
672 switch (lltok_getTok (op))
675 ret->data = constraintExprData_unaryExprSetOp (ret->data, MAXSET);
678 ret->data = constraintExprData_unaryExprSetOp (ret->data, MAXREAD);
681 llfatalbug(message("Unhandled Operation in Constraint") );
687 constraintExpr constraintExpr_makeMaxSetExpr (/*@exposed@*/ exprNode expr)
690 ret = constraintExpr_makeExprNode (expr);
692 ret = constraintExpr_makeMaxSetConstraintExpr (ret);
694 llassert (ret != NULL);
699 constraintExpr constraintExpr_makeMaxReadExpr (exprNode expr)
702 ret = constraintExpr_makeUnaryOpExprNode(expr);
703 ret->data = constraintExprData_unaryExprSetOp (ret->data, MAXREAD);
709 /*@unused@*/ static constraintExpr constraintExpr_makeMinSetExpr (/*@exposed@*/ exprNode expr)
712 ret = constraintExpr_makeUnaryOpExprNode(expr);
713 ret->data = constraintExprData_unaryExprSetOp (ret->data, MINSET);
718 /*@unused@*/ static constraintExpr constraintExpr_makeMinReadExpr (/*@exposed@*/ exprNode expr)
721 ret = constraintExpr_makeUnaryOpExprNode(expr);
722 ret->data = constraintExprData_unaryExprSetOp (ret->data, MINREAD);
728 constraintExpr constraintExpr_makeValueExpr (/*@exposed@*/ exprNode expr)
731 ret = constraintExpr_makeExprNode (expr);
736 constraintExpr constraintExpr_makeIntLiteral (long i)
740 ret = constraintExpr_alloc();
742 ret->data = dmalloc (sizeof *(ret->data) );
743 t = constraintTerm_makeIntLiteral (i);
744 ret->data = constraintExprData_termSetTerm (ret->data, t);
747 ret->origType = ctype_undefined;
753 constraintExpr constraintExpr_makeValueInt (int i)
755 return constraintExpr_makeIntLiteral (i);
760 /*@special@*/ static constraintExpr constraintExpr_makeBinaryOp (void)
761 /*@allocates result->data @*/ /*@sets result->kind @*/
764 ret = constraintExpr_alloc();
765 ret->kind = binaryexpr;
766 ret->data = dmalloc ( sizeof *(ret->data) );
768 ret->data->binaryOp.expr1 = constraintExpr_undefined;
769 ret->data->binaryOp.expr2 = constraintExpr_undefined;
775 static /*@only@*/ constraintExpr constraintExpr_makeBinaryOpConstraintExpr (/*@only@*/constraintExpr expr1, /*@only@*/ constraintExpr expr2)
780 ret = constraintExpr_makeBinaryOp();
781 ret->data = constraintExprData_binaryExprSetExpr1 (ret->data, expr1);
782 ret->data = constraintExprData_binaryExprSetExpr2 (ret->data, expr2);
783 ret->data = constraintExprData_binaryExprSetOp (ret->data, BINARYOP_UNDEFINED);
786 ret->origType = ctype_undefined;
792 constraintExpr constraintExpr_parseMakeBinaryOp (/*@only@*/ constraintExpr expr1, lltok op,/*@only@*/ constraintExpr expr2)
795 ret = constraintExpr_makeBinaryOpConstraintExpr (expr1, expr2);
797 if (lltok_getTok (op) == TPLUS)
799 ret->data = constraintExprData_binaryExprSetOp(ret->data, BINARYOP_PLUS);
801 else if (lltok_getTok (op) == TMINUS)
803 ret->data = constraintExprData_binaryExprSetOp(ret->data, BINARYOP_MINUS);
815 /*@unused@*/ static constraintExpr constraintExpr_makeBinaryOpExprNode (/*@exposed@*/ exprNode expr1, /*@exposed@*/ exprNode expr2)
818 constraintExpr sub1, sub2;
819 sub1 = constraintExpr_makeTermExprNode (expr1);
820 sub2 = constraintExpr_makeTermExprNode (expr2);
821 ret = constraintExpr_makeBinaryOpConstraintExpr(sub1, sub2);
827 constraintExpr constraintExpr_makeBinaryOpConstraintExprIntLiteral (/*@only@*/ constraintExpr expr, int literal)
830 constraintExpr constExpr;
832 constExpr = constraintExpr_makeIntLiteral (literal);
833 ret = constraintExpr_makeBinaryOpConstraintExpr (expr, constExpr);
834 ret->data = constraintExprData_binaryExprSetOp(ret->data, BINARYOP_PLUS);
839 constraintExpr constraintExpr_makeDecConstraintExpr (/*@only@*/constraintExpr expr)
844 inc = constraintExpr_makeIntLiteral (1);
845 ret = constraintExpr_makeBinaryOpConstraintExpr (expr, inc);
846 ret->data = constraintExprData_binaryExprSetOp(ret->data, BINARYOP_MINUS);
851 /*@only@*/ constraintExpr constraintExpr_makeSubtractExpr (/*@only@*/ constraintExpr expr, /*@only@*/ constraintExpr addent)
855 DPRINTF ((message ("Making subtract expression") ) );
857 ret = constraintExpr_makeBinaryOpConstraintExpr (expr, addent);
858 ret->data = constraintExprData_binaryExprSetOp (ret->data, BINARYOP_MINUS);
863 constraintExpr constraintExpr_makeAddExpr (/*@only@*/
864 constraintExpr expr, /*@only@*/
865 constraintExpr addent)
869 DPRINTF ((message ("Doing addTerm simplification") ) );
871 ret = constraintExpr_makeBinaryOpConstraintExpr (expr, addent);
872 ret->data = constraintExprData_binaryExprSetOp (ret->data, BINARYOP_PLUS);
878 constraintExpr constraintExpr_makeIncConstraintExpr (/*@only@*/ constraintExpr expr)
883 inc = constraintExpr_makeIntLiteral (1);
884 ret = constraintExpr_makeBinaryOpConstraintExpr (expr, inc);
885 ret->data = constraintExprData_binaryExprSetOp(ret->data, BINARYOP_PLUS);
890 static cstring constraintExprUnaryOpKind_print (constraintExprUnaryOpKind op)
895 return message("maxSet");
897 return message("minSet");
899 return message("maxRead");
901 return message("minRead");
904 return message ("<(Unary OP OTHER>");
910 static cstring constraintExprBinaryOpKind_print (constraintExprBinaryOpKind op)
922 return message ("<binary OP Unknown>");
926 bool constraintExpr_similar (constraintExpr expr1, constraintExpr expr2)
928 constraintExprKind kind;
930 llassert (expr1 != NULL);
931 llassert (expr2 != NULL);
932 if (expr1->kind != expr2->kind)
940 return constraintTerm_similar (constraintExprData_termGetTerm(expr1->data),
941 constraintExprData_termGetTerm(expr2->data) );
942 /*@notreached@*/ break;
945 if (constraintExprData_unaryExprGetOp (expr1->data) != constraintExprData_unaryExprGetOp (expr2->data) )
948 return (constraintExpr_similar (
949 constraintExprData_unaryExprGetExpr (expr1->data),
950 constraintExprData_unaryExprGetExpr (expr2->data)
954 if (constraintExprData_binaryExprGetOp (expr1->data) != constraintExprData_binaryExprGetOp (expr2->data) )
957 if (! constraintExpr_similar (constraintExprData_binaryExprGetExpr1 (expr1->data),
958 constraintExprData_binaryExprGetExpr1 (expr2->data)) )
961 if (! constraintExpr_similar (constraintExprData_binaryExprGetExpr2 (expr1->data),
962 constraintExprData_binaryExprGetExpr2 (expr2->data)) )
977 bool constraintExpr_same (constraintExpr expr1, constraintExpr expr2)
979 constraintExprKind kind;
981 llassert (expr1 != NULL);
982 llassert (expr2 != NULL);
983 if (expr1->kind != expr2->kind)
991 return constraintTerm_similar (constraintExprData_termGetTerm(expr1->data),
992 constraintExprData_termGetTerm(expr2->data) );
993 /*@notreached@*/ break;
996 if (constraintExprData_unaryExprGetOp (expr1->data) != constraintExprData_unaryExprGetOp (expr2->data) )
999 return (constraintExpr_same (
1000 constraintExprData_unaryExprGetExpr (expr1->data),
1001 constraintExprData_unaryExprGetExpr (expr2->data)
1006 if (constraintExprData_binaryExprGetOp (expr1->data) != constraintExprData_binaryExprGetOp (expr2->data) )
1009 if (! constraintExpr_same (constraintExprData_binaryExprGetExpr1 (expr1->data),
1010 constraintExprData_binaryExprGetExpr1 (expr2->data)) )
1013 if (! constraintExpr_same (constraintExprData_binaryExprGetExpr2 (expr1->data),
1014 constraintExprData_binaryExprGetExpr2 (expr2->data)) )
1018 /*@notreached@*/ break;
1029 bool constraintExpr_search (/*@observer@*/ constraintExpr c, /*@observer@*/ constraintExpr old)
1032 constraintExprKind kind;
1033 constraintExpr temp;
1035 if ( constraintExpr_similar (c, old) )
1037 DPRINTF((message ("Found %q",
1038 constraintExpr_unparse(old)
1050 temp = constraintExprData_unaryExprGetExpr (c->data);
1051 ret = ret || constraintExpr_search (temp, old);
1055 temp = constraintExprData_binaryExprGetExpr1 (c->data);
1056 ret = ret || constraintExpr_search(temp, old);
1058 temp = constraintExprData_binaryExprGetExpr2 (c->data);
1059 ret = ret || constraintExpr_search(temp, old);
1069 /*@only@*/ constraintExpr constraintExpr_searchandreplace (/*@only@*/ /*@unique@*/ constraintExpr c, /*@temp@*/ constraintExpr old, /*@temp@*/ constraintExpr newExpr )
1071 constraintExprKind kind;
1072 constraintExpr temp;
1075 if ( constraintExpr_similar (c, old) )
1078 ctype newType, cType;
1081 ret = constraintExpr_copy (newExpr);
1083 DPRINTF((message ("Replacing %s with %s",
1084 constraintExpr_unparse(old), constraintExpr_unparse(newExpr)
1087 if (constraintExpr_canGetCType(c) && constraintExpr_canGetCType(newExpr) )
1089 cType = constraintExpr_getCType(c);
1090 newType = constraintExpr_getCType(newExpr);
1092 if (ctype_match(cType,newType) )
1094 DPRINTF(( message("constraintExpr_searchandreplace: replacing "
1095 " %s with type %s with %s with type %s",
1096 constraintExpr_print(c), ctype_unparse(cType),
1097 constraintExpr_print(newExpr), ctype_unparse(newType)
1102 ret->origType = cType;
1106 if (constraintExpr_hasMaxSet(c) )
1108 if (constraintExpr_hasTypeChange(c))
1110 DPRINTF(( message("constraintExpr_searchandreplace: encountered "
1111 "MaxSet with changed type %s ",
1112 constraintExpr_print(c) )
1115 /*fix this with a conversation */
1116 ret = constraintExpr_adjustMaxSetForCast(ret, constraintExpr_getOrigType(c));
1119 constraintExpr_free(c);
1131 temp = constraintExprData_unaryExprGetExpr (c->data);
1132 temp = constraintExpr_copy(temp);
1133 temp = constraintExpr_searchandreplace (temp, old, newExpr);
1134 c->data = constraintExprData_unaryExprSetExpr (c->data, temp);
1138 temp = constraintExprData_binaryExprGetExpr1 (c->data);
1139 temp = constraintExpr_copy(temp);
1140 temp = constraintExpr_searchandreplace (temp, old, newExpr);
1141 c->data = constraintExprData_binaryExprSetExpr1 (c->data, temp);
1143 temp = constraintExprData_binaryExprGetExpr2 (c->data);
1144 temp = constraintExpr_copy(temp);
1145 temp = constraintExpr_searchandreplace (temp, old, newExpr);
1146 c->data = constraintExprData_binaryExprSetExpr2 (c->data, temp);
1154 static constraintExpr constraintExpr_simplifyChildren (/*@returned@*/ constraintExpr c)
1156 constraintExprKind kind;
1157 constraintExpr temp;
1166 temp = constraintExprData_unaryExprGetExpr (c->data);
1167 temp = constraintExpr_copy(temp);
1168 temp = constraintExpr_simplify (temp);
1169 c->data = constraintExprData_unaryExprSetExpr (c->data, temp);
1172 DPRINTF((message("constraintExpr_simplfiyChildren: simplify binary expression: %s",constraintExpr_unparse(c) ) ) );
1173 temp = constraintExprData_binaryExprGetExpr1 (c->data);
1174 temp = constraintExpr_copy(temp);
1175 temp = constraintExpr_simplify (temp);
1177 c->data = constraintExprData_binaryExprSetExpr1 (c->data, temp);
1179 temp = constraintExprData_binaryExprGetExpr2 (c->data);
1180 temp = constraintExpr_copy(temp);
1181 temp = constraintExpr_simplify (temp);
1183 c->data = constraintExprData_binaryExprSetExpr2 (c->data, temp);
1193 constraintExpr constraintExpr_setFileloc (/*@returned@*/ constraintExpr c, fileloc loc) /*@modifies c @*/
1196 constraintExpr temp;
1198 llassert(c != NULL);
1203 t = constraintExprData_termGetTerm (c->data);
1204 t = constraintTerm_copy(t);
1205 t = constraintTerm_setFileloc (t, loc);
1206 c->data = constraintExprData_termSetTerm (c->data, t);
1210 temp = constraintExprData_binaryExprGetExpr1 (c->data);
1211 temp = constraintExpr_copy(temp);
1212 temp = constraintExpr_setFileloc (temp, loc);
1213 c->data = constraintExprData_binaryExprSetExpr1 (c->data, temp);
1215 temp = constraintExprData_binaryExprGetExpr2 (c->data);
1216 temp = constraintExpr_copy(temp);
1217 temp = constraintExpr_setFileloc (temp, loc);
1218 c->data = constraintExprData_binaryExprSetExpr2 (c->data, temp);
1221 temp = constraintExprData_unaryExprGetExpr (c->data);
1222 temp = constraintExpr_copy(temp);
1223 temp = constraintExpr_setFileloc (temp, loc);
1224 c->data = constraintExprData_unaryExprSetExpr (c->data, temp);
1230 static /*@only@*/ constraintExpr constraintExpr_simplifybinaryExpr (/*@only@*/constraintExpr c)
1232 constraintExpr e1, e2;
1233 constraintExprBinaryOpKind op;
1235 e1 = constraintExprData_binaryExprGetExpr1 (c->data);
1236 e2 = constraintExprData_binaryExprGetExpr2 (c->data);
1238 if (constraintExpr_canGetValue (e1) && constraintExpr_canGetValue(e2) )
1242 i = constraintExpr_getValue(e1) + constraintExpr_getValue (e2);
1243 constraintExpr_free(c);
1244 c = constraintExpr_makeIntLiteral (i);
1248 op = constraintExprData_binaryExprGetOp (c->data);
1249 if (op == BINARYOP_MINUS)
1250 if (constraintExpr_similar(e1, e2) )
1252 constraintExpr_free(c);
1253 c = constraintExpr_makeIntLiteral (0);
1261 this thing takes the lexpr and expr of a constraint and modifies lexpr
1262 and returns a (possiblly new) value for expr
1264 /* 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 */
1266 /* the approach is a little Kludgy but seems to work. I should probably use something cleaner at some point ... */
1269 /*@only@*/ constraintExpr constraintExpr_solveBinaryExpr (constraintExpr lexpr, /*@only@*/ constraintExpr expr)
1271 constraintExpr expr1, expr2;
1272 constraintExprBinaryOpKind op;
1274 if (lexpr->kind != binaryexpr)
1277 expr2 = constraintExprData_binaryExprGetExpr2 (lexpr->data);
1278 expr1 = constraintExprData_binaryExprGetExpr1 (lexpr->data);
1280 op = constraintExprData_binaryExprGetOp (lexpr->data);
1282 expr1 = constraintExpr_copy(expr1);
1283 expr2 = constraintExpr_copy(expr2);
1285 /* drl possible problem : warning make sure this works */
1287 lexpr->kind = expr1->kind;
1288 sfree (lexpr->data);
1290 lexpr->data = copyExprData (expr1->data, expr1->kind);
1291 constraintExpr_free(expr1);
1293 if (op == BINARYOP_PLUS)
1294 expr = constraintExpr_makeSubtractExpr (expr, expr2);
1295 else if (op == BINARYOP_MINUS)
1296 expr = constraintExpr_makeAddExpr (expr, expr2);
1304 #warning this needs to be checked
1305 expr = constraintExpr_solveBinaryExpr (expr1, expr);
1307 expr = constraintExpr_solveBinaryExpr (expr2, expr);
1312 static /*@only@*/ constraintExpr constraintExpr_simplifyunaryExpr (/*@only@*/ constraintExpr c)
1316 llassert (c->kind == unaryExpr);
1318 DPRINTF ((message ("Doing constraintExpr_simplifyunaryExpr:%s", constraintExpr_unparse (c) ) ) );
1320 if ((constraintExprData_unaryExprGetOp (c->data) != MAXSET) &&
1321 (constraintExprData_unaryExprGetOp (c->data) != MAXREAD) )
1326 exp = constraintExprData_unaryExprGetExpr (c->data);
1327 exp = constraintExpr_copy(exp);
1329 if (exp->kind == term)
1331 constraintTerm cterm;
1333 cterm = constraintExprData_termGetTerm (exp->data);
1335 if (constraintTerm_isStringLiteral(cterm) )
1338 val = constraintTerm_getStringLiteral (cterm);
1339 if (constraintExprData_unaryExprGetOp (c->data) == MAXSET)
1341 constraintExpr temp;
1343 temp = constraintExpr_makeIntLiteral ((int)strlen (cstring_toCharsSafe(val) ) );
1345 constraintExpr_free(c);
1346 constraintExpr_free(exp);
1351 if (constraintExprData_unaryExprGetOp (c->data) == MAXREAD)
1353 constraintExpr temp;
1355 temp = constraintExpr_makeIntLiteral ((int)strlen (cstring_toCharsSafe(val) ) );
1357 constraintExpr_free(c);
1358 constraintExpr_free(exp);
1365 /* slight Kludge to hanlde var [] = { , , };
1366 ** type syntax I don't think this is sounds but it should be good
1367 ** enough. The C stanrad is very confusing about initialization
1371 if (constraintTerm_isInitBlock(cterm) )
1373 constraintExpr temp;
1376 len = constraintTerm_getInitBlockLength(cterm);
1378 temp = constraintExpr_makeIntLiteral (len );
1380 constraintExpr_free(c);
1381 DPRINTF(( message("Changed too %q", constraintExpr_print(temp)
1383 constraintExpr_free(exp);
1387 constraintExpr_free(exp);
1391 if (exp->kind != binaryexpr)
1393 constraintExpr_free(exp);
1397 if (constraintExprData_binaryExprGetOp (exp->data) == BINARYOP_PLUS )
1400 /* if (constraintExpr_canGetValue (constraintExprData_binaryExprGetExpr2 (exp->data) ) ) */
1403 constraintExpr temp, temp2;
1405 DPRINTF ((message ("Doing fancy simplification") ) );
1407 temp = constraintExprData_binaryExprGetExpr2 (exp->data);
1409 temp2 = constraintExprData_binaryExprGetExpr1 (exp->data);
1411 temp2 = constraintExpr_copy(temp2);
1412 c->data = constraintExprData_unaryExprSetExpr (c->data, temp2);
1415 temp = constraintExpr_copy (temp);
1417 c = constraintExpr_makeSubtractExpr (c, temp);
1419 DPRINTF ((message ("Done fancy simplification:%s", constraintExpr_unparse (c) ) ) );
1423 DPRINTF ((message ("constraintExpr_simplifyUnaryExpr: Done simplification:%s", constraintExpr_unparse (c) ) ) );
1425 constraintExpr_free(exp);
1430 /*@only@*/ constraintExpr constraintExpr_simplify (/*@only@*/ constraintExpr c)
1432 constraintExprKind kind;
1436 DPRINTF ((message ("Doing constraintExpr_simplify:%s", constraintExpr_unparse (c) ) ) );
1441 /* drl: I think this is an Splint bug */
1443 ret = constraintExpr_copy(c);
1445 constraintExpr_free(c);
1447 ret = constraintExpr_simplifyChildren (ret);
1449 ret = constraintExpr_combineConstants (ret);
1451 ret = constraintExpr_simplifyChildren (ret);
1459 t = constraintExprData_termGetTerm (ret->data);
1460 t = constraintTerm_copy(t);
1461 t = constraintTerm_simplify (t);
1462 ret->data = constraintExprData_termSetTerm (ret->data, t);
1465 ret = constraintExpr_simplifyunaryExpr (ret);
1468 ret = constraintExpr_simplifybinaryExpr (ret);
1474 DPRINTF ((message ("constraintExpr_simplify returning :%s", constraintExpr_unparse (ret) ) ) );
1480 cstring constraintExpr_unparse (/*@temp@*/ /*@observer@*/ constraintExpr ex) /*@*/
1483 constraintExprKind kind;
1485 llassert (ex != NULL);
1493 if (context_getFlag (FLG_PARENCONSTRAINT) )
1495 st = message ("(%q) ", constraintTerm_print (constraintExprData_termGetTerm (ex->data)));
1499 st = message ("%q", constraintTerm_print (constraintExprData_termGetTerm (ex->data)));
1503 st = message ("%q(%q)",
1504 constraintExprUnaryOpKind_print (constraintExprData_unaryExprGetOp (ex->data) ),
1505 constraintExpr_unparse (constraintExprData_unaryExprGetExpr (ex->data) )
1509 if (context_getFlag (FLG_PARENCONSTRAINT) )
1511 st = message ("(%q) %q (%q)",
1512 constraintExpr_unparse (constraintExprData_binaryExprGetExpr1 (ex->data) ),
1513 constraintExprBinaryOpKind_print (constraintExprData_binaryExprGetOp (ex->data)
1515 constraintExpr_unparse (constraintExprData_binaryExprGetExpr2 (ex->data) )
1520 st = message ("%q %q %q",
1521 constraintExpr_unparse (constraintExprData_binaryExprGetExpr1 (ex->data) ),
1522 constraintExprBinaryOpKind_print (constraintExprData_binaryExprGetOp (ex->data)
1524 constraintExpr_unparse (constraintExprData_binaryExprGetExpr2 (ex->data) )
1531 st = message ("error");
1535 DPRINTF((message ("constraintExpr_unparse: '%s'",st) ) );
1539 constraintExpr constraintExpr_doSRefFixBaseParam (/*@returned@*/ constraintExpr expr, exprNodeList arglist)
1541 constraintTerm Term;
1542 constraintExprKind kind;
1543 constraintExpr expr1, expr2;
1544 constraintExprData data;
1545 llassert (expr != NULL);
1554 Term = constraintExprData_termGetTerm(data);
1555 Term = constraintTerm_copy(Term);
1557 Term = constraintTerm_doSRefFixBaseParam (Term, arglist);
1558 data = constraintExprData_termSetTerm(data, Term);
1561 expr1 = constraintExprData_unaryExprGetExpr (data);
1562 expr1 = constraintExpr_copy(expr1);
1564 expr1 = constraintExpr_doSRefFixBaseParam (expr1, arglist);
1565 data = constraintExprData_unaryExprSetExpr (data, expr1);
1568 expr1 = constraintExprData_binaryExprGetExpr1 (data);
1569 expr2 = constraintExprData_binaryExprGetExpr2 (data);
1571 expr1 = constraintExpr_copy(expr1);
1572 expr2 = constraintExpr_copy(expr2);
1574 expr1 = constraintExpr_doSRefFixBaseParam (expr1, arglist);
1575 data = constraintExprData_binaryExprSetExpr1 (data, expr1);
1576 expr2 = constraintExpr_doSRefFixBaseParam (expr2, arglist);
1577 data = constraintExprData_binaryExprSetExpr2 (data, expr2);
1588 / *@only@* / constraintExpr constraintExpr_doSRefFixInvarConstraint (/ *@only@* / constraintExpr expr, sRef s, ctype ct)
1590 constraintExprKind kind;
1591 constraintExpr expr1, expr2;
1592 constraintExprData data;
1593 llassert (expr != NULL);
1602 expr = doSRefFixInvarConstraintTerm (expr, s, ct);
1605 expr1 = constraintExprData_unaryExprGetExpr (data);
1606 expr1 = constraintExpr_copy(expr1);
1607 expr1 = constraintExpr_doSRefFixInvarConstraint (expr1, s, ct);
1608 data = constraintExprData_unaryExprSetExpr (data, expr1);
1611 expr1 = constraintExprData_binaryExprGetExpr1 (data);
1612 expr2 = constraintExprData_binaryExprGetExpr2 (data);
1614 expr1 = constraintExpr_copy(expr1);
1615 expr2 = constraintExpr_copy(expr2);
1617 expr1 = constraintExpr_doSRefFixInvarConstraint (expr1, s, ct);
1618 data = constraintExprData_binaryExprSetExpr1 (data, expr1);
1619 expr2 = constraintExpr_doSRefFixInvarConstraint (expr2, s, ct);
1620 data = constraintExprData_binaryExprSetExpr2 (data, expr2);
1631 /*@only@*/ constraintExpr constraintExpr_doSRefFixConstraintParam (/*@only@*/ constraintExpr expr, exprNodeList arglist) /*@modifies expr@*/
1633 constraintExprKind kind;
1634 constraintExpr expr1, expr2;
1635 constraintExprData data;
1636 llassert (expr != NULL);
1645 expr = doSRefFixConstraintParamTerm (expr, arglist);
1648 expr1 = constraintExprData_unaryExprGetExpr (data);
1649 expr1 = constraintExpr_copy(expr1);
1650 expr1 = constraintExpr_doSRefFixConstraintParam (expr1, arglist);
1651 data = constraintExprData_unaryExprSetExpr (data, expr1);
1654 expr1 = constraintExprData_binaryExprGetExpr1 (data);
1655 expr2 = constraintExprData_binaryExprGetExpr2 (data);
1657 expr1 = constraintExpr_copy(expr1);
1658 expr2 = constraintExpr_copy(expr2);
1660 expr1 = constraintExpr_doSRefFixConstraintParam (expr1, arglist);
1661 data = constraintExprData_binaryExprSetExpr1 (data, expr1);
1662 expr2 = constraintExpr_doSRefFixConstraintParam (expr2, arglist);
1663 data = constraintExprData_binaryExprSetExpr2 (data, expr2);
1673 /*@only@*/ constraintExpr constraintExpr_doFixResult (/*@only@*/ constraintExpr expr, /*@observer@*/ exprNode fcnCall)
1675 constraintExprKind kind;
1676 constraintExpr expr1, expr2;
1677 constraintExprData data;
1678 llassert (expr != NULL);
1687 expr = doFixResultTerm (expr, fcnCall);
1690 expr1 = constraintExprData_unaryExprGetExpr (data);
1691 expr1 = constraintExpr_copy(expr1);
1693 expr1 = constraintExpr_doFixResult (expr1, fcnCall);
1694 data = constraintExprData_unaryExprSetExpr (data, expr1);
1697 expr1 = constraintExprData_binaryExprGetExpr1 (data);
1698 expr2 = constraintExprData_binaryExprGetExpr2 (data);
1700 expr1 = constraintExpr_copy(expr1);
1701 expr2 = constraintExpr_copy(expr2);
1703 expr1 = constraintExpr_doFixResult (expr1, fcnCall);
1704 data = constraintExprData_binaryExprSetExpr1 (data, expr1);
1705 expr2 = constraintExpr_doFixResult (expr2, fcnCall);
1706 data = constraintExprData_binaryExprSetExpr2 (data, expr2);
1716 cstring constraintExpr_print (constraintExpr expr) /*@*/
1718 return constraintExpr_unparse (expr);
1721 bool constraintExpr_hasMaxSet (constraintExpr expr) /*@*/
1725 t = constraintExpr_unparse(expr);
1727 if (cstring_containsLit(t, "maxSet") != NULL )
1741 /*returns 1 0 -1 like strcmp
1747 int constraintExpr_compare (constraintExpr expr1, constraintExpr expr2)
1749 long value1, value2;
1751 if (constraintExpr_similar (expr1, expr2) )
1756 value1 = constraintExpr_getValue(expr1);
1757 value2 = constraintExpr_getValue(expr2);
1759 if (value1 > value2)
1762 if (value1 == value2)
1769 long constraintExpr_getValue (constraintExpr expr)
1771 llassert (expr->kind == term);
1772 return (constraintTerm_getValue (constraintExprData_termGetTerm (expr->data)));
1775 bool constraintExpr_canGetValue (constraintExpr expr)
1780 return constraintTerm_canGetValue (constraintExprData_termGetTerm (expr->data) );
1789 fileloc constraintExpr_getFileloc (constraintExpr expr)
1793 constraintExprKind kind;
1800 t = constraintExprData_termGetTerm (expr->data);
1801 return (constraintTerm_getFileloc (t) );
1805 e = constraintExprData_unaryExprGetExpr (expr->data);
1806 return (constraintExpr_getFileloc (e) );
1810 e = constraintExprData_binaryExprGetExpr1 (expr->data);
1811 return (constraintExpr_getFileloc (e) );
1816 return (fileloc_undefined);
1819 /*drl moved from constriantTerm.c 5/20/001*/
1820 static /*@only@*/ constraintExpr
1821 doFixResultTerm (/*@only@*/ constraintExpr e, /*@exposed@*/ exprNode fcnCall)
1825 /*maybe this should move to cosntraintExpr.c -drl7x 5/18/01*/
1828 constraintExprData data = e->data;
1829 constraintExprKind kind = e->kind;
1833 llassert(kind == term);
1835 t = constraintExprData_termGetTerm (data);
1836 llassert (constraintTerm_isDefined(t) );
1839 switch (constraintTerm_getKind(t) )
1847 s = constraintTerm_getSRef(t);
1848 if (sRef_isResult (s))
1850 ret = constraintExpr_makeExprNode(fcnCall);
1851 constraintExpr_free(e);
1867 / *@only@* / static constraintExpr
1868 doSRefFixInvarConstraintTerm (/ *@only@* / constraintExpr e,
1873 constraintExprData data = e->data;
1875 constraintExprKind kind = e->kind;
1879 llassert(kind == term);
1881 t = constraintExprData_termGetTerm (data);
1882 llassert (constraintTerm_isDefined(t) );
1886 DPRINTF (("Fixing: %s", constraintExpr_print (e)));
1888 switch (constraintTerm_getKind(t))
1891 DPRINTF((message ("%q @ %q ", constraintTerm_print(t),
1892 fileloc_unparse (constraintTerm_getFileloc(t) ) ) ));
1895 DPRINTF((message (" %q ", constraintTerm_print (t)) ));
1899 / * evans 2001-07-24: constants should use the original term * /
1900 if (!constraintTerm_canGetValue (t))
1903 DPRINTF ((message("Doing sRef_fixInvarConstraint for %q ",
1904 constraintTerm_print (t) ) ));
1906 snew = fixSref (ct, s, constraintTerm_getSRef(t));
1908 ret = constraintExpr_makeTermsRef(snew);
1910 constraintExpr_free (e);
1912 DPRINTF (( message("After Doing sRef_fixConstraintParam constraintExpr is %q ",
1913 constraintExpr_print (ret) ) ));
1914 / *@-branchstate@* /
1915 } / *@=branchstate@* /
1927 /*drl moved from constriantTerm.c 5/20/001*/
1928 /*@only@*/ static constraintExpr
1929 doSRefFixConstraintParamTerm (/*@only@*/ constraintExpr e, /*@observer@*/ /*@temp@*/ exprNodeList arglist)
1933 constraintExprData data = e->data;
1935 constraintExprKind kind = e->kind;
1939 llassert(kind == term);
1941 t = constraintExprData_termGetTerm (data);
1942 llassert (constraintTerm_isDefined(t) );
1946 DPRINTF (("Fixing: %s", constraintExpr_print (e)));
1948 switch (constraintTerm_getKind(t))
1951 DPRINTF((message ("%q @ %q ", constraintTerm_print(t),
1952 fileloc_unparse (constraintTerm_getFileloc(t) ) ) ));
1955 DPRINTF((message (" %q ", constraintTerm_print (t)) ));
1959 /* evans 2001-07-24: constants should use the original term */
1960 if (!constraintTerm_canGetValue (t))
1962 DPRINTF ((message("Doing sRef_fixConstraintParam for %q ",
1963 constraintTerm_print (t) ) ));
1964 ret = sRef_fixConstraintParam (constraintTerm_getSRef(t), arglist);
1966 constraintExpr_free (e);
1968 DPRINTF (( message("After Doing sRef_fixConstraintParam constraintExpr is %q ",
1969 constraintExpr_print (ret) ) ));
1971 } /*@=branchstate@*/
1983 /* bool constraintExpr_includesTerm (constraintExpr expr, constraintTerm term) */
1985 /* if (constraintTerm_hasTerm (expr->term, term) ) */
1988 /* if ((expr->expr) != NULL) */
1990 /* return ( constraintExpr_includesTerm (expr->expr, term) ); */
1996 /*drl added 6/11/01 */
1997 bool constraintExpr_isBinaryExpr (/*@observer@*/ constraintExpr c)
1999 if (c->kind == binaryexpr)
2006 /*drl added 8/08/001 */
2007 bool constraintExpr_isTerm (/*@observer@*/ constraintExpr c) /*@*/
2009 if (c->kind == term)
2016 /*@observer@*/ /*@temp@*/ constraintTerm constraintExpr_getTerm ( /*@temp@*/ /*@observer@*/ constraintExpr c) /*@*/
2018 constraintTerm term;
2020 llassert(constraintExpr_isTerm(c) );
2022 term = constraintExprData_termGetTerm(c->data);
2027 static void binaryExpr_dump (/*@observer@*/ constraintExprData data, FILE *f)
2029 constraintExpr expr1;
2030 constraintExprBinaryOpKind binaryOp;
2031 constraintExpr expr2;
2034 binaryOp = constraintExprData_binaryExprGetOp (data);
2036 fprintf(f, "%d\n", (int) binaryOp);
2038 expr1 = constraintExprData_binaryExprGetExpr1 (data);
2039 expr2 = constraintExprData_binaryExprGetExpr2 (data);
2043 constraintExpr_dump(expr1, f);
2046 constraintExpr_dump(expr2, f);
2050 static constraintExpr binaryExpr_undump (FILE *f)
2052 constraintExpr expr1;
2053 constraintExprBinaryOpKind binaryOp;
2054 constraintExpr expr2;
2063 os = mstring_create (MAX_DUMP_LINE_LENGTH);
2065 str = reader_readLine (f, os, MAX_DUMP_LINE_LENGTH);
2069 llfatalerrorLoc (message ("Error while reading internal library") );
2072 binaryOp = (constraintExprBinaryOpKind) reader_getInt(&str);
2074 str = reader_readLine (f, os, MAX_DUMP_LINE_LENGTH);
2079 llfatalerrorLoc (message ("Error while reading internal library") );
2082 reader_checkChar (&str, 'e');
2083 reader_checkChar (&str, '1');
2085 expr1 = constraintExpr_undump (f);
2087 str = reader_readLine (f, os, MAX_DUMP_LINE_LENGTH);
2089 reader_checkChar (&str, 'e');
2090 reader_checkChar (&str, '2');
2092 expr2 = constraintExpr_undump (f);
2094 ret = constraintExpr_makeBinaryOpConstraintExpr (expr1, expr2);
2095 ret->data = constraintExprData_binaryExprSetOp(ret->data, binaryOp);
2103 static void unaryExpr_dump (/*@observer@*/ constraintExprData data, FILE *f)
2106 constraintExpr expr;
2107 constraintExprUnaryOpKind unaryOp;
2109 unaryOp = constraintExprData_unaryExprGetOp (data);
2111 fprintf(f, "%d\n", (int) unaryOp);
2113 expr = constraintExprData_unaryExprGetExpr (data);
2115 constraintExpr_dump(expr, f);
2118 static constraintExpr unaryExpr_undump ( FILE *f)
2121 constraintExpr expr;
2122 constraintExprUnaryOpKind unaryOp;
2128 str = mstring_create (MAX_DUMP_LINE_LENGTH);
2131 str = reader_readLine (f, os, MAX_DUMP_LINE_LENGTH);
2136 llfatalerrorLoc (message ("Error while reading internal library") );
2139 unaryOp = (constraintExprUnaryOpKind) reader_getInt(&str);
2141 expr = constraintExpr_undump (f);
2143 ret = constraintExpr_makeUnaryOp (expr, unaryOp);
2150 void constraintExpr_dump (/*@observer@*/ constraintExpr expr, FILE *f)
2152 constraintExprKind kind;
2158 fprintf(f,"%d\n", (int) kind);
2163 t = constraintExprData_termGetTerm (expr->data);
2164 constraintTerm_dump (t, f);
2167 unaryExpr_dump (expr->data, f);
2170 binaryExpr_dump (expr->data, f);
2175 /*@only@*/ constraintExpr constraintExpr_undump (FILE *f)
2177 constraintExprKind kind;
2184 s = mstring_create (MAX_DUMP_LINE_LENGTH);
2188 s = reader_readLine (f, os, MAX_DUMP_LINE_LENGTH);
2192 llfatalerrorLoc (message ("Error while reading internal library") );
2195 kind = (constraintExprKind) reader_getInt(&s);
2202 t = constraintTerm_undump (f);
2203 ret = constraintExpr_makeTerm(t);
2206 ret = unaryExpr_undump (f);
2209 ret = binaryExpr_undump (f);
2219 int constraintExpr_getDepth (constraintExpr ex)
2223 constraintExprKind kind;
2225 llassert (ex != NULL);
2235 ret = constraintExpr_getDepth (constraintExprData_unaryExprGetExpr (ex->data) );
2241 ret = constraintExpr_getDepth (constraintExprData_binaryExprGetExpr1 (ex->data) );
2245 ret += constraintExpr_getDepth (constraintExprData_binaryExprGetExpr2 (ex->data) );
2256 bool constraintExpr_canGetCType (constraintExpr e) /*@*/
2258 if (e->kind == term)
2264 DPRINTF(( message("constraintExpr_canGetCType: can't get type for %s ",
2265 constraintExpr_print(e) ) ));
2270 ctype constraintExpr_getCType (constraintExpr e) /*@*/
2274 llassert(constraintExpr_canGetCType(e) );
2279 t = constraintExprData_termGetTerm (e->data);
2280 return (constraintTerm_getCType(t) );
2281 /* assume that a unary expression will be an int ... */
2283 return ctype_signedintegral;
2285 /* drl for just return type of first operand */
2288 constraintExpr_getCType
2289 (constraintExprData_binaryExprGetExpr1 (e->data) )
2297 /* drl add 10-5-001 */
2299 static bool constraintExpr_hasTypeChange(constraintExpr e)
2301 if (constraintExpr_isDefined((e)) && (e->ct == TRUE) )
2306 if (e->kind == unaryExpr)
2308 if (constraintExprData_unaryExprGetOp (e->data) == MAXSET)
2312 ce = constraintExprData_unaryExprGetExpr(e->data);
2314 return (constraintExpr_hasTypeChange(ce) );
2321 /* drl add 10-5-001 */
2323 static ctype constraintExpr_getOrigType (constraintExpr e)
2326 llassert(constraintExpr_hasTypeChange(e) );
2334 if (e->kind == unaryExpr)
2336 if (constraintExprData_unaryExprGetOp (e->data) == MAXSET)
2340 ce = constraintExprData_unaryExprGetExpr(e->data);
2342 return (constraintExpr_getOrigType(ce) );
2350 /*drl added these around 10/18/001*/
2352 static /*@only@*/ constraintExpr constraintExpr_div (/*@only@*/ constraintExpr e, /*@unused@*/ ctype ct)
2357 /*@access exprNode@*/ /* !!! NO! Don't do this recklessly! */
2359 static /*@only@*/ constraintExpr constraintTerm_simpleDivTypeExprNode(/*@only@*/ constraintExpr e, ctype ct)
2362 exprNode t1, t2, expr;
2367 message("constraintTerm_simpleDivTypeExprNode e=%s, ct=%s",
2368 constraintExpr_print(e), ctype_unparse(ct)
2372 t = constraintExprData_termGetTerm(e->data);
2374 expr = constraintTerm_getExprNode(t);
2376 llassert(exprNode_isDefined(expr) );
2378 if (expr->kind == XPR_OP)
2382 t1 = exprData_getOpA (data);
2383 t2 = exprData_getOpB (data);
2384 llassert(exprNode_isDefined(t1) && exprNode_isDefined(t2) );
2385 tok = exprData_getOpTok (data);
2386 if (lltok_isMult(tok) )
2389 if ((t1->kind == XPR_SIZEOF) || (t1->kind == XPR_SIZEOFT) )
2393 if (t1->kind == XPR_SIZEOFT)
2395 ct2 = qtype_getType (exprData_getType (t1->edata));
2400 temp = exprData_getSingle (t1->edata);
2401 llassert(exprNode_isDefined(temp) );
2402 ct2 = qtype_getType (exprData_getType(temp->edata) );
2404 if (ctype_match (ctype_makePointer(ct2), ct) )
2406 /* this is a bit sloopy but ... */
2407 constraintExpr_free(e);
2408 return constraintExpr_makeExprNode(t2);
2413 else if ((t2->kind == XPR_SIZEOF) || (t2->kind == XPR_SIZEOFT) )
2417 if (t2->kind == XPR_SIZEOFT)
2419 ct2 = qtype_getType (exprData_getType (t2->edata));
2423 temp = exprData_getSingle (t2->edata);
2424 llassert(exprNode_isDefined(temp) );
2426 ct2 = qtype_getType (exprData_getType(temp->edata ) );
2428 if (ctype_match (ctype_makePointer(ct2),ct) )
2430 /* sloopy way to do this... */ /*@i22*/
2431 constraintExpr_free(e);
2432 return constraintExpr_makeExprNode(t1);
2442 return (constraintExpr_div (e, ct) );
2445 /*@noacces exprNode@*/
2447 static /*@only@*/ constraintExpr simpleDivType (/*@only@*/ constraintExpr e, ctype ct)
2450 DPRINTF(( (message("simpleDiv got %s ", constraintExpr_unparse(e) ) )
2460 t = constraintExprData_termGetTerm(e->data);
2463 if (constraintTerm_isExprNode (t) )
2465 return constraintTerm_simpleDivTypeExprNode(e, ct);
2467 /* search for * size of ct and remove */
2469 return constraintExpr_div (e, ct);
2474 constraintExpr temp;
2476 temp = constraintExprData_binaryExprGetExpr1 (e->data);
2477 temp = constraintExpr_copy(temp);
2478 temp = simpleDivType (temp, ct);
2480 e->data = constraintExprData_binaryExprSetExpr1 (e->data, temp);
2482 temp = constraintExprData_binaryExprGetExpr2 (e->data);
2483 temp = constraintExpr_copy(temp);
2484 temp = simpleDivType (temp, ct);
2485 e->data = constraintExprData_binaryExprSetExpr2 (e->data, temp);
2487 DPRINTF(( (message("simpleDiv binaryexpr returning %s ", constraintExpr_unparse(e) ) )
2493 return constraintExpr_div (e, ct);
2500 static /*@only@*/ constraintExpr constraintExpr_adjustMaxSetForCast(/*@only@*/ constraintExpr e, ctype ct)
2503 DPRINTF(( (message("constraintExpr_adjustMaxSetForCast got %s ", constraintExpr_unparse(e) ) )
2506 e = constraintExpr_makeIncConstraintExpr(e);
2508 e = constraintExpr_simplify(e);
2511 e = simpleDivType (e, ct);
2513 e = constraintExpr_makeDecConstraintExpr(e);
2515 e = constraintExpr_simplify(e);
2517 DPRINTF(( (message("constraintExpr_adjustMaxSetForCast returning %s ", constraintExpr_unparse(e) ) )