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,
62 ctype p_tfrom, ctype p_tto,
65 /*@special@*/ /*@notnull@*/ static constraintExpr constraintExpr_makeBinaryOp (void)
66 /* @allocates result->data @ @sets result->kind @ */ ;
68 void constraintExpr_free (/*@only@*/ constraintExpr expr)
70 if (constraintExpr_isDefined(expr) )
75 constraintExprData_freeUnaryExpr(expr->data);
78 constraintExprData_freeBinaryExpr(expr->data);
81 constraintExprData_freeTerm(expr->data);
92 llcontbug(message("attempted to free null pointer in constraintExpr_free"));
96 bool constraintExpr_isLit (constraintExpr expr)
98 llassert (expr != NULL);
100 if (expr->kind == term)
102 constraintTerm term = constraintExprData_termGetTerm (expr->data);
103 if (constraintTerm_isIntLiteral (term) )
112 static bool isZeroBinaryOp (constraintExpr expr)
116 llassert (expr != NULL); /* evans 2001-07-18 */
118 if (!constraintExpr_isBinaryExpr (expr) )
124 e2 = constraintExprData_binaryExprGetExpr2(expr->data);
126 llassert (e2 != NULL); /* evans 2001-07-18 */
128 if (constraintExpr_isBinaryExpr (e2) )
131 constraintExprBinaryOpKind op;
133 op = constraintExprData_binaryExprGetOp (e2->data);
135 e1 = constraintExprData_binaryExprGetExpr1(e2->data);
137 if (constraintExpr_isLit(e1) )
139 if (constraintExpr_getValue(e1) == 0 )
148 /* change expr + (o - expr) to (expr -expr) */
150 /*@only@*/ /*@notnull@*/ static constraintExpr removeZero (/*@only@*/ /*@returned@*/ constraintExpr expr)
152 constraintExpr expr1, expr2;
156 constraintExprBinaryOpKind op;
158 constraintExprBinaryOpKind tempOp;
160 llassert (expr != NULL); /* evans 2001-07-18 */
162 if (!isZeroBinaryOp(expr) )
166 expr1 = constraintExprData_binaryExprGetExpr1(expr->data);
167 expr2 = constraintExprData_binaryExprGetExpr2(expr->data);
168 op = constraintExprData_binaryExprGetOp(expr->data);
170 llassert( constraintExpr_isBinaryExpr(expr2) );
172 temp = constraintExprData_binaryExprGetExpr2 (expr2->data);
173 temp = constraintExpr_copy (temp);
175 tempOp = constraintExprData_binaryExprGetOp (expr2->data);
177 if (op == BINARYOP_PLUS)
179 else if (op == BINARYOP_MINUS)
181 if (tempOp == BINARYOP_PLUS)
183 else if (tempOp == BINARYOP_MINUS)
191 expr->data = constraintExprData_binaryExprSetExpr2(expr->data, temp);
192 expr->data = constraintExprData_binaryExprSetOp(expr->data, op);
198 /*@only@*//*@notnull@*/ constraintExpr constraintExpr_propagateConstants (/*@only@*/ constraintExpr expr,
199 /*@out@*/ bool * propagate,
200 /*@out@*/ int *literal)
202 constraintExpr expr1;
203 constraintExpr expr2;
204 bool propagate1, propagate2;
205 int literal1, literal2;
206 constraintExprBinaryOpKind op;
218 llassert (expr != NULL);
220 /* we simplify unaryExpr elsewhere */
221 if (expr->kind != binaryexpr)
224 op = constraintExprData_binaryExprGetOp (expr->data);
226 DPRINTF((message("constraintExpr_propagateConstants: binaryexpr: %s", constraintExpr_unparse(expr) ) ) );
228 expr = removeZero(expr);
230 expr1 = constraintExprData_binaryExprGetExpr1(expr->data);
231 expr2 = constraintExprData_binaryExprGetExpr2(expr->data);
233 expr1 = constraintExpr_copy(expr1);
234 expr2 = constraintExpr_copy(expr2);
236 expr1 = constraintExpr_propagateConstants (expr1, &propagate1, &literal1);
237 expr2 = constraintExpr_propagateConstants (expr2, &propagate2, &literal2);
239 expr1 = removeZero(expr1);
240 expr2 = removeZero(expr2);
243 *propagate = propagate1 || propagate2;
245 if (op == BINARYOP_PLUS)
246 *literal = literal1 + literal2;
247 else if (op == BINARYOP_MINUS)
248 *literal = literal1 - literal2;
252 if ( constraintExpr_isLit (expr1) && constraintExpr_isLit (expr2) )
255 t1 = constraintExpr_getValue (expr1);
256 t2 = constraintExpr_getValue (expr2);
257 llassert(*propagate == FALSE);
260 constraintExpr_free (expr);
261 constraintExpr_free (expr1);
262 constraintExpr_free (expr2);
264 if (op == BINARYOP_PLUS )
265 return (constraintExpr_makeIntLiteral ((t1+t2) ));
266 else if (op == BINARYOP_MINUS)
267 return (constraintExpr_makeIntLiteral ((t1-t2) ));
273 if (constraintExpr_isLit (expr1) )
277 *literal += constraintExpr_getValue (expr1);
279 if (op == BINARYOP_PLUS)
281 constraintExpr_free(expr1);
282 constraintExpr_free(expr);
285 else if (op == BINARYOP_MINUS)
290 /* this is an ugly kludge to deal with not
291 having a unary minus operation...*/
293 temp = constraintExpr_makeIntLiteral (0);
294 temp = constraintExpr_makeSubtractExpr (temp, expr2);
296 constraintExpr_free(expr1);
297 constraintExpr_free(expr);
299 llassert (constraintExpr_isDefined(temp) );
304 BADBRANCH; /* evans 2001-07-18 */
308 if (constraintExpr_isLit (expr2) )
312 if ( op == BINARYOP_PLUS )
313 *literal += constraintExpr_getValue (expr2);
314 else if (op == BINARYOP_MINUS)
315 *literal -= constraintExpr_getValue (expr2);
320 constraintExpr_free(expr2);
321 constraintExpr_free(expr);
325 DPRINTF((message("constraintExpr_propagateConstants returning: %s", constraintExpr_unparse(expr) ) ) );
327 expr->data = constraintExprData_binaryExprSetExpr1 (expr->data, expr1);
328 expr->data = constraintExprData_binaryExprSetExpr2 (expr->data, expr2);
330 expr = removeZero(expr);
334 /*@notnull@*/ /*@only@*/ static constraintExpr constraintExpr_combineConstants (/*@only@*/ constraintExpr expr ) /*@modifies expr@*/
339 DPRINTF ((message ("Before combine %s", constraintExpr_unparse(expr) ) ) );
340 expr = constraintExpr_propagateConstants (expr, &propagate, &literal);
349 ret = constraintExpr_makeBinaryOpConstraintExprIntLiteral (expr, literal);
353 DPRINTF ((message ("After combine %s", constraintExpr_unparse(expr) ) ) );
355 llassert(constraintExpr_isDefined(expr) );
360 static /*@notnull@*/ constraintExpr constraintExpr_alloc (void) /*@post:isnull result->data@*/
363 ret = dmalloc (sizeof (*ret) );
367 ret->origType = ctype_undefined;
371 /*@only@*/ static constraintExprData copyExprData (/*@observer@*/ constraintExprData data, constraintExprKind kind)
373 constraintExprData ret;
374 llassert(constraintExprData_isDefined(data));
379 ret = constraintExprData_copyBinaryExpr(data);
382 ret = constraintExprData_copyUnaryExpr(data);
385 ret = constraintExprData_copyTerm(data);
393 constraintExpr constraintExpr_copy (constraintExpr expr)
396 ret = constraintExpr_alloc ();
399 /*drl 03/02/2003 this shouldn't be used to copy a null
400 expression but handle things cleanly if it is*/
401 llassert (!constraintExpr_isUndefined(expr) );
403 if (constraintExpr_isUndefined(expr) )
405 return constraintExpr_undefined;
408 ret->kind = expr->kind;
410 ret->data = copyExprData (expr->data, expr->kind);
412 ret->origType = expr->origType;
417 /*@only@*/ static constraintExpr oldconstraintExpr_makeTermExprNode ( /*@dependent@*/ exprNode e)
421 ret = constraintExpr_alloc();
423 ret->data = dmalloc (sizeof *(ret->data) );
424 t = constraintTerm_makeExprNode (e);
425 ret->data = constraintExprData_termSetTerm (ret->data, t);
427 ret->origType = ctype_undefined;
432 /*@access exprNode@*/
433 constraintExpr constraintExpr_makeExprNode (exprNode e)
436 constraintExpr ret, ce1, ce2;
441 llassert (e != NULL);
448 t = exprData_getSingle (data);
449 while (exprNode_isInParens (t) )
451 t = exprData_getUopNode (t->edata);
453 s = exprNode_getSref (t);
454 if (sRef_isFixedArray(s) )
458 size = (int) sRef_getArraySize(s);
459 ret = constraintExpr_makeIntLiteral (size);
461 else if (exprNode_isStringLiteral (t))
463 cstring str = multiVal_forceString (exprNode_getValue(t));
464 ret = constraintExpr_makeIntLiteral (size_toLong (cstring_length (str) + 1));
468 DPRINTF ((message ("could not determine the size of %s", exprNode_unparse (e) ) ) );
469 ret = oldconstraintExpr_makeTermExprNode (e);
474 DPRINTF ((message ("Examining operation %s", exprNode_unparse (e) ) ) );
475 t1 = exprData_getOpA (data);
476 t2 = exprData_getOpB (data);
477 tok = exprData_getOpTok (data);
479 if (lltok_isPlus_Op (tok) || lltok_isMinus_Op (tok) )
481 ce1 = constraintExpr_makeExprNode (t1);
482 ce2 = constraintExpr_makeExprNode (t2);
483 ret = constraintExpr_parseMakeBinaryOp (ce1, tok, ce2);
487 /* define this block to activate the cheesy heuristic
488 for handling sizeof expressions*/
495 We handle expressions containing sizeof with the rule
496 (sizeof type ) * Expr = Expr
498 This is the total wronge way to do this but...
499 it may be better than nothing
504 else if (lltok_isMult(tok) )
506 if ((t1->kind == XPR_SIZEOF) || (t1->kind == XPR_SIZEOFT) )
508 ret = constraintExpr_makeExprNode(t2);
510 else if ((t2->kind == XPR_SIZEOF) || (t2->kind == XPR_SIZEOFT) )
512 ret = constraintExpr_makeExprNode(t1);
516 ret = oldconstraintExpr_makeTermExprNode (e);
522 ret = oldconstraintExpr_makeTermExprNode (e);
526 t = exprData_getUopNode (data);
527 ret = constraintExpr_makeExprNode (t);
531 t = exprData_getUopNode (data);
532 tok = exprData_getUopTok (data);
533 if (lltok_isIncOp (tok))
536 temp = constraintExpr_makeExprNode(t);
537 ret = constraintExpr_makeIncConstraintExpr(temp);
539 else if (lltok_isDecOp (tok))
542 temp = constraintExpr_makeExprNode(t);
543 ret = constraintExpr_makeDecConstraintExpr(temp);
546 ret = oldconstraintExpr_makeTermExprNode (e);
550 t = exprData_getUopNode (data);
551 ret = constraintExpr_makeExprNode (t);
554 t = exprData_getCastNode (data);
555 ret = constraintExpr_makeExprNode (t);
558 t = exprData_getPairA(data);
559 ret = constraintExpr_makeExprNode(t);
562 ret = oldconstraintExpr_makeTermExprNode (e);
568 /*@noaccess exprNode@*/
573 /*@only@*/ constraintExpr constraintExpr_makeTermExprNode (/*@exposed@*/ exprNode e)
575 return oldconstraintExpr_makeTermExprNode(e);
578 static constraintExpr constraintExpr_makeTerm (/*@only@*/ constraintTerm t)
582 ret = constraintExpr_alloc();
584 ret->data = dmalloc (sizeof *(ret->data) );
585 ret->data->term = NULL;
586 ret->data = constraintExprData_termSetTerm (ret->data, t);
588 ret->origType = ctype_undefined;
593 constraintExpr constraintExpr_makeTermsRef (/*@temp@*/ sRef s)
597 ret = constraintExpr_alloc();
599 ret->data = dmalloc (sizeof *(ret->data) );
600 t = constraintTerm_makesRef (s);
601 ret->data = constraintExprData_termSetTerm (ret->data, t);
604 ret->origType = ctype_undefined;
609 /*@special@*/ /*@notnull@*/ static constraintExpr makeUnaryOpGeneric (void) /*@allocates result->data@*/ /*@defines result->kind@*/
612 ret = constraintExpr_alloc();
613 ret->kind = unaryExpr;
614 ret->data = dmalloc (sizeof *(ret->data));
615 ret->data->unaryOp.expr = constraintExpr_undefined;
619 /*@notnull@*/ /*@only@*/ static constraintExpr constraintExpr_makeUnaryOpConstraintExpr (/*@only@*/ constraintExpr cexpr)
622 ret = makeUnaryOpGeneric();
626 ret->data = constraintExprData_unaryExprSetExpr (ret->data, cexpr);
627 ret->data = constraintExprData_unaryExprSetOp (ret->data, UNARYOP_UNDEFINED);
636 /*@only@*/ /*@notnull@*/ static constraintExpr
637 constraintExpr_makeUnaryOp (/*@only@*/ constraintExpr cexpr, constraintExprUnaryOpKind Op)
640 ret = makeUnaryOpGeneric();
642 ret->data = constraintExprData_unaryExprSetExpr (ret->data, cexpr);
643 ret->data = constraintExprData_unaryExprSetOp (ret->data, Op);
646 ret->origType = ctype_undefined;
651 /*@only@*/ /*@notnull@*/
652 static constraintExpr constraintExpr_makeUnaryOpExprNode (/*@exposed@*/ exprNode expr)
656 sub = constraintExpr_makeExprNode (expr);
657 ret = constraintExpr_makeUnaryOpConstraintExpr(sub);
662 /*@only@*/ /*@notnull@*/
663 static constraintExpr constraintExpr_makeMaxSetConstraintExpr (/*@only@*/ constraintExpr c)
666 ret = constraintExpr_makeUnaryOp (c, MAXSET);
671 /*@only@*/ /*@notnull@*/
672 static constraintExpr constraintExpr_makeSRefUnaryOp (/*@temp@*/ /*@observer@*/ sRef s, constraintExprUnaryOpKind op)
677 t = constraintExpr_makeTermsRef (s);
678 ret = constraintExpr_makeUnaryOpConstraintExpr (t);
679 ret->data = constraintExprData_unaryExprSetOp (ret->data, op);
685 constraintExpr constraintExpr_makeSRefMaxRead( sRef s)
687 return (constraintExpr_makeSRefUnaryOp (s, MAXREAD) );
691 constraintExpr constraintExpr_makeSRefMaxset ( sRef s)
693 return (constraintExpr_makeSRefUnaryOp (s, MAXSET) );
697 constraintExpr constraintExpr_parseMakeUnaryOp (lltok op, constraintExpr cexpr)
700 ret = constraintExpr_makeUnaryOpConstraintExpr ( cexpr);
702 switch (lltok_getTok (op))
705 ret->data = constraintExprData_unaryExprSetOp (ret->data, MAXSET);
708 ret->data = constraintExprData_unaryExprSetOp (ret->data, MAXREAD);
711 llfatalbug (message ("Unhandled operation in constraint: %s", lltok_unparse (op)));
717 constraintExpr constraintExpr_makeMaxSetExpr (/*@exposed@*/ exprNode expr)
720 ret = constraintExpr_makeExprNode (expr);
722 ret = constraintExpr_makeMaxSetConstraintExpr (ret);
724 llassert (ret != NULL);
729 constraintExpr constraintExpr_makeMaxReadExpr (exprNode expr)
732 ret = constraintExpr_makeUnaryOpExprNode(expr);
733 ret->data = constraintExprData_unaryExprSetOp (ret->data, MAXREAD);
739 /*@unused@*/ static constraintExpr constraintExpr_makeMinSetExpr (/*@exposed@*/ exprNode expr)
742 ret = constraintExpr_makeUnaryOpExprNode(expr);
743 ret->data = constraintExprData_unaryExprSetOp (ret->data, MINSET);
748 /*@unused@*/ static constraintExpr constraintExpr_makeMinReadExpr (/*@exposed@*/ exprNode expr)
751 ret = constraintExpr_makeUnaryOpExprNode(expr);
752 ret->data = constraintExprData_unaryExprSetOp (ret->data, MINREAD);
758 constraintExpr constraintExpr_makeValueExpr (/*@exposed@*/ exprNode expr)
761 ret = constraintExpr_makeExprNode (expr);
765 /*@only@*/ /*@notnull@*/
766 constraintExpr constraintExpr_makeIntLiteral (long i)
770 ret = constraintExpr_alloc();
772 ret->data = dmalloc (sizeof *(ret->data) );
773 t = constraintTerm_makeIntLiteral (i);
774 ret->data = constraintExprData_termSetTerm (ret->data, t);
777 ret->origType = ctype_undefined;
783 constraintExpr constraintExpr_makeValueInt (int i)
785 return constraintExpr_makeIntLiteral (i);
789 /*@only@*/ /*@notnull@*/
790 /*@special@*/ static constraintExpr constraintExpr_makeBinaryOp (void)
791 /*@allocates result->data @*/ /*@sets result->kind @*/
794 ret = constraintExpr_alloc();
795 ret->kind = binaryexpr;
796 ret->data = dmalloc ( sizeof *(ret->data) );
798 ret->data->binaryOp.expr1 = constraintExpr_undefined;
799 ret->data->binaryOp.expr2 = constraintExpr_undefined;
805 static /*@notnull@*/ /*@only@*/ constraintExpr constraintExpr_makeBinaryOpConstraintExpr (/*@only@*/constraintExpr expr1, /*@only@*/ constraintExpr expr2)
810 ret = constraintExpr_makeBinaryOp();
811 ret->data = constraintExprData_binaryExprSetExpr1 (ret->data, expr1);
812 ret->data = constraintExprData_binaryExprSetExpr2 (ret->data, expr2);
813 ret->data = constraintExprData_binaryExprSetOp (ret->data, BINARYOP_UNDEFINED);
816 ret->origType = ctype_undefined;
822 constraintExpr constraintExpr_parseMakeBinaryOp (/*@only@*/ constraintExpr expr1, lltok op,/*@only@*/ constraintExpr expr2)
825 ret = constraintExpr_makeBinaryOpConstraintExpr (expr1, expr2);
827 if (lltok_getTok (op) == TPLUS)
829 ret->data = constraintExprData_binaryExprSetOp(ret->data, BINARYOP_PLUS);
831 else if (lltok_getTok (op) == TMINUS)
833 ret->data = constraintExprData_binaryExprSetOp(ret->data, BINARYOP_MINUS);
845 /*@unused@*/ static constraintExpr constraintExpr_makeBinaryOpExprNode (/*@exposed@*/ exprNode expr1, /*@exposed@*/ exprNode expr2)
848 constraintExpr sub1, sub2;
849 sub1 = constraintExpr_makeTermExprNode (expr1);
850 sub2 = constraintExpr_makeTermExprNode (expr2);
851 ret = constraintExpr_makeBinaryOpConstraintExpr(sub1, sub2);
856 static /*@notnull@*/ /*@only@*/
857 constraintExpr constraintExpr_makeBinaryOpConstraintExprIntLiteral (/*@only@*/ constraintExpr expr, int literal)
860 constraintExpr constExpr;
862 constExpr = constraintExpr_makeIntLiteral (literal);
863 ret = constraintExpr_makeBinaryOpConstraintExpr (expr, constExpr);
864 ret->data = constraintExprData_binaryExprSetOp(ret->data, BINARYOP_PLUS);
869 constraintExpr constraintExpr_makeDecConstraintExpr (/*@only@*/constraintExpr expr)
874 inc = constraintExpr_makeIntLiteral (1);
875 ret = constraintExpr_makeBinaryOpConstraintExpr (expr, inc);
876 ret->data = constraintExprData_binaryExprSetOp(ret->data, BINARYOP_MINUS);
881 /*@only@*/ constraintExpr constraintExpr_makeSubtractExpr (/*@only@*/ constraintExpr expr, /*@only@*/ constraintExpr addent)
885 DPRINTF ((message ("Making subtract expression") ) );
887 ret = constraintExpr_makeBinaryOpConstraintExpr (expr, addent);
888 ret->data = constraintExprData_binaryExprSetOp (ret->data, BINARYOP_MINUS);
893 constraintExpr constraintExpr_makeAddExpr (/*@only@*/
894 constraintExpr expr, /*@only@*/
895 constraintExpr addent)
899 DPRINTF ((message ("Doing addTerm simplification") ) );
901 ret = constraintExpr_makeBinaryOpConstraintExpr (expr, addent);
902 ret->data = constraintExprData_binaryExprSetOp (ret->data, BINARYOP_PLUS);
908 constraintExpr constraintExpr_makeIncConstraintExpr (/*@only@*/ constraintExpr expr)
913 inc = constraintExpr_makeIntLiteral (1);
914 ret = constraintExpr_makeBinaryOpConstraintExpr (expr, inc);
915 ret->data = constraintExprData_binaryExprSetOp(ret->data, BINARYOP_PLUS);
920 static cstring constraintExprUnaryOpKind_print (constraintExprUnaryOpKind op)
925 return message("maxSet");
927 return message("minSet");
929 return message("maxRead");
931 return message("minRead");
934 return message ("<(Unary OP OTHER>");
940 static cstring constraintExprBinaryOpKind_print (constraintExprBinaryOpKind op)
952 return message ("<binary OP Unknown>");
956 bool constraintExpr_similar (constraintExpr expr1, constraintExpr expr2)
958 constraintExprKind kind;
960 llassert (expr1 != NULL);
961 llassert (expr2 != NULL);
962 if (expr1->kind != expr2->kind)
970 return constraintTerm_similar (constraintExprData_termGetTerm(expr1->data),
971 constraintExprData_termGetTerm(expr2->data) );
972 /*@notreached@*/ break;
975 if (constraintExprData_unaryExprGetOp (expr1->data) != constraintExprData_unaryExprGetOp (expr2->data) )
978 return (constraintExpr_similar (
979 constraintExprData_unaryExprGetExpr (expr1->data),
980 constraintExprData_unaryExprGetExpr (expr2->data)
984 if (constraintExprData_binaryExprGetOp (expr1->data) != constraintExprData_binaryExprGetOp (expr2->data) )
987 if (! constraintExpr_similar (constraintExprData_binaryExprGetExpr1 (expr1->data),
988 constraintExprData_binaryExprGetExpr1 (expr2->data)) )
991 if (! constraintExpr_similar (constraintExprData_binaryExprGetExpr2 (expr1->data),
992 constraintExprData_binaryExprGetExpr2 (expr2->data)) )
1007 bool constraintExpr_same (constraintExpr expr1, constraintExpr expr2)
1009 constraintExprKind kind;
1011 llassert (expr1 != NULL);
1012 llassert (expr2 != NULL);
1013 if (expr1->kind != expr2->kind)
1021 return constraintTerm_similar (constraintExprData_termGetTerm(expr1->data),
1022 constraintExprData_termGetTerm(expr2->data) );
1023 /*@notreached@*/ break;
1026 if (constraintExprData_unaryExprGetOp (expr1->data) != constraintExprData_unaryExprGetOp (expr2->data) )
1029 return (constraintExpr_same (
1030 constraintExprData_unaryExprGetExpr (expr1->data),
1031 constraintExprData_unaryExprGetExpr (expr2->data)
1036 if (constraintExprData_binaryExprGetOp (expr1->data) != constraintExprData_binaryExprGetOp (expr2->data) )
1039 if (! constraintExpr_same (constraintExprData_binaryExprGetExpr1 (expr1->data),
1040 constraintExprData_binaryExprGetExpr1 (expr2->data)) )
1043 if (! constraintExpr_same (constraintExprData_binaryExprGetExpr2 (expr1->data),
1044 constraintExprData_binaryExprGetExpr2 (expr2->data)) )
1048 /*@notreached@*/ break;
1060 constraintExpr_search (/*@observer@*/ constraintExpr c,
1061 /*@observer@*/ constraintExpr old)
1064 constraintExprKind kind;
1065 constraintExpr temp;
1067 if (constraintExpr_similar (c, old))
1069 DPRINTF (("Found %q", constraintExpr_unparse (old)));
1073 llassert (constraintExpr_isDefined (c) && constraintExpr_isDefined(old) );
1075 if ( !(constraintExpr_isDefined (c) && constraintExpr_isDefined(old) ) )
1085 temp = constraintExprData_unaryExprGetExpr (c->data);
1086 ret = ret || constraintExpr_search (temp, old);
1090 temp = constraintExprData_binaryExprGetExpr1 (c->data);
1091 ret = ret || constraintExpr_search(temp, old);
1093 temp = constraintExprData_binaryExprGetExpr2 (c->data);
1094 ret = ret || constraintExpr_search(temp, old);
1104 /*@only@*/ constraintExpr
1105 constraintExpr_searchandreplace (/*@only@*/ /*@unique@*/ constraintExpr c, /*@temp@*/ constraintExpr old,
1106 /*@temp@*/ constraintExpr newExpr )
1108 constraintExprKind kind;
1109 constraintExpr temp;
1112 llassert (constraintExpr_isDefined (newExpr) && (constraintExpr_isDefined (old) && constraintExpr_isDefined(c) ) );
1114 if (constraintExpr_similar (c, old))
1116 ctype newType = ctype_unknown;
1117 ctype cType = ctype_unknown;
1119 ret = constraintExpr_copy (newExpr);
1120 llassert(constraintExpr_isDefined(ret) );
1121 /*drl if newExpr != NULL then ret will != NULL*/
1123 DPRINTF (("Replacing %s with %s in %s",
1124 constraintExpr_unparse (old), constraintExpr_unparse (newExpr),
1125 constraintExpr_unparse (c)));
1127 if (constraintExpr_canGetCType (c) && constraintExpr_canGetCType (newExpr))
1129 cType = constraintExpr_getCType(c);
1130 newType = constraintExpr_getCType (newExpr);
1132 if (ctype_match (cType,newType))
1134 DPRINTF (("constraintExpr_searchandreplace: replacing "
1135 " %s with type %s with %s with type %s",
1136 constraintExpr_unparse (c), ctype_unparse(cType),
1137 constraintExpr_unparse (newExpr), ctype_unparse(newType)));
1140 ret->origType = cType;
1141 DPRINTF (("Type: %s", ctype_unparse (constraintExpr_getCType (ret))));
1145 if (constraintExpr_hasMaxSet (c))
1147 if (constraintExpr_hasTypeChange (c))
1149 fileloc loc = constraintExpr_loc (c);
1150 DPRINTF (("constraintExpr_searchandreplace: encountered "
1151 "MaxSet with changed type %s ",
1152 constraintExpr_unparse (c)));
1154 if (c->kind == unaryExpr)
1156 constraintExpr ce = constraintExprData_unaryExprGetExpr (c->data);
1157 DPRINTF (("Its a unary! %s / %s",
1158 ctype_unparse (constraintExpr_getCType (ce)),
1159 ctype_unparse (constraintExpr_getOrigType (ce))));
1160 ret = constraintExpr_adjustMaxSetForCast (ret, constraintExpr_getCType (ce),
1161 constraintExpr_getOrigType (ce),
1166 /* fix this with a conversation */
1167 DPRINTF (("Types: %s / %s", ctype_unparse (newType), ctype_unparse (cType)));
1168 ret = constraintExpr_adjustMaxSetForCast (ret, constraintExpr_getCType (c),
1169 constraintExpr_getOrigType(c),
1175 constraintExpr_free (c);
1176 DPRINTF (("ret: %s", constraintExpr_unparse (ret)));
1187 DPRINTF (("Making unary expression!"));
1188 temp = constraintExprData_unaryExprGetExpr (c->data);
1189 temp = constraintExpr_copy (temp);
1190 temp = constraintExpr_searchandreplace (temp, old, newExpr);
1191 c->data = constraintExprData_unaryExprSetExpr (c->data, temp);
1194 DPRINTF (("Making binary expression!"));
1195 temp = constraintExprData_binaryExprGetExpr1 (c->data);
1196 temp = constraintExpr_copy (temp);
1197 temp = constraintExpr_searchandreplace (temp, old, newExpr);
1198 c->data = constraintExprData_binaryExprSetExpr1 (c->data, temp);
1200 temp = constraintExprData_binaryExprGetExpr2 (c->data);
1201 temp = constraintExpr_copy (temp);
1202 temp = constraintExpr_searchandreplace (temp, old, newExpr);
1203 c->data = constraintExprData_binaryExprSetExpr2 (c->data, temp);
1209 DPRINTF (("ret: %s", constraintExpr_unparse (c)));
1213 /*@notnull@*/ static constraintExpr constraintExpr_simplifyChildren (/*@returned@*/ /*@notnull@*/ constraintExpr c)
1215 constraintExprKind kind;
1216 constraintExpr temp;
1225 temp = constraintExprData_unaryExprGetExpr (c->data);
1226 temp = constraintExpr_copy(temp);
1227 temp = constraintExpr_simplify (temp);
1228 c->data = constraintExprData_unaryExprSetExpr (c->data, temp);
1231 DPRINTF((message("constraintExpr_simplfiyChildren: simplify binary expression: %s",constraintExpr_unparse(c) ) ) );
1232 temp = constraintExprData_binaryExprGetExpr1 (c->data);
1233 temp = constraintExpr_copy(temp);
1234 temp = constraintExpr_simplify (temp);
1236 c->data = constraintExprData_binaryExprSetExpr1 (c->data, temp);
1238 temp = constraintExprData_binaryExprGetExpr2 (c->data);
1239 temp = constraintExpr_copy(temp);
1240 temp = constraintExpr_simplify (temp);
1242 c->data = constraintExprData_binaryExprSetExpr2 (c->data, temp);
1252 constraintExpr constraintExpr_setFileloc (/*@returned@*/ constraintExpr c, fileloc loc) /*@modifies c @*/
1255 constraintExpr temp;
1257 llassert(c != NULL);
1262 t = constraintExprData_termGetTerm (c->data);
1263 t = constraintTerm_copy(t);
1264 t = constraintTerm_setFileloc (t, loc);
1265 c->data = constraintExprData_termSetTerm (c->data, t);
1269 temp = constraintExprData_binaryExprGetExpr1 (c->data);
1270 temp = constraintExpr_copy(temp);
1271 temp = constraintExpr_setFileloc (temp, loc);
1272 c->data = constraintExprData_binaryExprSetExpr1 (c->data, temp);
1274 temp = constraintExprData_binaryExprGetExpr2 (c->data);
1275 temp = constraintExpr_copy(temp);
1276 temp = constraintExpr_setFileloc (temp, loc);
1277 c->data = constraintExprData_binaryExprSetExpr2 (c->data, temp);
1280 temp = constraintExprData_unaryExprGetExpr (c->data);
1281 temp = constraintExpr_copy(temp);
1282 temp = constraintExpr_setFileloc (temp, loc);
1283 c->data = constraintExprData_unaryExprSetExpr (c->data, temp);
1289 static /*@only@*/ constraintExpr constraintExpr_simplifybinaryExpr (/*@only@*/ /*@notnull@*/ constraintExpr c)
1291 constraintExpr e1, e2;
1292 constraintExprBinaryOpKind op;
1294 e1 = constraintExprData_binaryExprGetExpr1 (c->data);
1295 e2 = constraintExprData_binaryExprGetExpr2 (c->data);
1297 if (constraintExpr_canGetValue (e1) && constraintExpr_canGetValue(e2) )
1301 i = constraintExpr_getValue(e1) + constraintExpr_getValue (e2);
1302 constraintExpr_free(c);
1303 c = constraintExpr_makeIntLiteral (i);
1307 op = constraintExprData_binaryExprGetOp (c->data);
1308 if (op == BINARYOP_MINUS)
1309 if (constraintExpr_similar(e1, e2) )
1311 constraintExpr_free(c);
1312 c = constraintExpr_makeIntLiteral (0);
1320 this thing takes the lexpr and expr of a constraint and modifies lexpr
1321 and returns a (possiblly new) value for expr
1323 /* 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 */
1325 /* the approach is a little Kludgy but seems to work. I should probably use something cleaner at some point ... */
1328 /*@only@*/ constraintExpr constraintExpr_solveBinaryExpr (constraintExpr lexpr, /*@only@*/ constraintExpr expr)
1330 constraintExpr expr1, expr2;
1331 constraintExprBinaryOpKind op;
1333 llassert(constraintExpr_isDefined (lexpr) && constraintExpr_isDefined (expr) );
1335 if (lexpr->kind != binaryexpr)
1338 expr2 = constraintExprData_binaryExprGetExpr2 (lexpr->data);
1339 expr1 = constraintExprData_binaryExprGetExpr1 (lexpr->data);
1341 op = constraintExprData_binaryExprGetOp (lexpr->data);
1343 expr1 = constraintExpr_copy(expr1);
1344 expr2 = constraintExpr_copy(expr2);
1346 llassert(constraintExpr_isDefined (expr1) && constraintExpr_isDefined (expr2) );
1348 /* drl possible problem : warning make sure this works */
1350 lexpr->kind = expr1->kind;
1351 sfree (lexpr->data);
1353 lexpr->data = copyExprData (expr1->data, expr1->kind);
1354 constraintExpr_free(expr1);
1356 if (op == BINARYOP_PLUS)
1357 expr = constraintExpr_makeSubtractExpr (expr, expr2);
1358 else if (op == BINARYOP_MINUS)
1359 expr = constraintExpr_makeAddExpr (expr, expr2);
1367 #warning this needs to be checked
1368 expr = constraintExpr_solveBinaryExpr (expr1, expr);
1370 expr = constraintExpr_solveBinaryExpr (expr2, expr);
1375 static /*@only@*/ constraintExpr constraintExpr_simplifyunaryExpr (/*@only@*/ constraintExpr c)
1379 llassert(constraintExpr_isDefined (c) );
1380 llassert (c->kind == unaryExpr);
1382 DPRINTF ((message ("Doing constraintExpr_simplifyunaryExpr:%s", constraintExpr_unparse (c) ) ) );
1384 if ((constraintExprData_unaryExprGetOp (c->data) != MAXSET) &&
1385 (constraintExprData_unaryExprGetOp (c->data) != MAXREAD) )
1390 exp = constraintExprData_unaryExprGetExpr (c->data);
1391 exp = constraintExpr_copy(exp);
1393 llassert(constraintExpr_isDefined (exp) );
1395 if (exp->kind == term)
1397 constraintTerm cterm;
1399 cterm = constraintExprData_termGetTerm (exp->data);
1401 if (constraintTerm_isStringLiteral(cterm) )
1404 val = constraintTerm_getStringLiteral (cterm);
1405 if (constraintExprData_unaryExprGetOp (c->data) == MAXSET)
1407 constraintExpr temp;
1409 temp = constraintExpr_makeIntLiteral ((int)strlen (cstring_toCharsSafe(val) ) );
1411 constraintExpr_free(c);
1412 constraintExpr_free(exp);
1417 if (constraintExprData_unaryExprGetOp (c->data) == MAXREAD)
1419 constraintExpr temp;
1421 temp = constraintExpr_makeIntLiteral ((int)strlen (cstring_toCharsSafe(val) ) );
1423 constraintExpr_free(c);
1424 constraintExpr_free(exp);
1431 /* slight Kludge to hanlde var [] = { , , };
1432 ** type syntax I don't think this is sounds but it should be good
1433 ** enough. The C stanrad is very confusing about initialization
1437 if (constraintTerm_isInitBlock(cterm) )
1439 constraintExpr temp;
1442 len = constraintTerm_getInitBlockLength(cterm);
1444 temp = constraintExpr_makeIntLiteral (len );
1446 constraintExpr_free(c);
1447 DPRINTF(( message("Changed too %q", constraintExpr_print(temp)
1449 constraintExpr_free(exp);
1453 constraintExpr_free(exp);
1457 if (exp->kind != binaryexpr)
1459 constraintExpr_free(exp);
1463 if (constraintExprData_binaryExprGetOp (exp->data) == BINARYOP_PLUS )
1466 /* if (constraintExpr_canGetValue (constraintExprData_binaryExprGetExpr2 (exp->data) ) ) */
1469 constraintExpr temp, temp2;
1471 DPRINTF ((message ("Doing fancy simplification") ) );
1473 temp = constraintExprData_binaryExprGetExpr2 (exp->data);
1475 temp2 = constraintExprData_binaryExprGetExpr1 (exp->data);
1477 temp2 = constraintExpr_copy(temp2);
1478 c->data = constraintExprData_unaryExprSetExpr (c->data, temp2);
1481 temp = constraintExpr_copy (temp);
1483 c = constraintExpr_makeSubtractExpr (c, temp);
1485 DPRINTF ((message ("Done fancy simplification:%s", constraintExpr_unparse (c) ) ) );
1489 DPRINTF ((message ("constraintExpr_simplifyUnaryExpr: Done simplification:%s", constraintExpr_unparse (c) ) ) );
1491 constraintExpr_free(exp);
1496 /*@only@*/ constraintExpr constraintExpr_simplify (/*@only@*/ constraintExpr c)
1498 constraintExprKind kind;
1502 DPRINTF ((message ("Doing constraintExpr_simplify:%s", constraintExpr_unparse (c) ) ) );
1506 llassert ( constraintExpr_isDefined (c) );
1507 if (constraintExpr_isUndefined (c) )
1509 return constraintExpr_undefined;
1512 ret = constraintExpr_copy(c);
1513 llassert(constraintExpr_isDefined (ret) );
1515 constraintExpr_free(c);
1517 ret = constraintExpr_simplifyChildren (ret);
1519 ret = constraintExpr_combineConstants (ret);
1521 ret = constraintExpr_simplifyChildren (ret);
1529 t = constraintExprData_termGetTerm (ret->data);
1530 t = constraintTerm_copy(t);
1531 t = constraintTerm_simplify (t);
1532 ret->data = constraintExprData_termSetTerm (ret->data, t);
1535 ret = constraintExpr_simplifyunaryExpr (ret);
1538 ret = constraintExpr_simplifybinaryExpr (ret);
1544 DPRINTF ((message ("constraintExpr_simplify returning :%s", constraintExpr_unparse (ret) ) ) );
1550 cstring constraintExpr_unparse (/*@temp@*/ constraintExpr ex) /*@*/
1553 constraintExprKind kind;
1555 llassert (ex != NULL);
1562 if (context_getFlag (FLG_PARENCONSTRAINT) )
1564 st = message ("(%q) ", constraintTerm_unparse (constraintExprData_termGetTerm (ex->data)));
1568 st = message ("%q", constraintTerm_unparse (constraintExprData_termGetTerm (ex->data)));
1572 st = message ("%q(%q)",
1573 constraintExprUnaryOpKind_print (constraintExprData_unaryExprGetOp (ex->data) ),
1574 constraintExpr_unparse (constraintExprData_unaryExprGetExpr (ex->data) )
1578 if (context_getFlag (FLG_PARENCONSTRAINT) )
1580 st = message ("(%q) %q (%q)",
1581 constraintExpr_unparse (constraintExprData_binaryExprGetExpr1 (ex->data) ),
1582 constraintExprBinaryOpKind_print (constraintExprData_binaryExprGetOp (ex->data)),
1583 constraintExpr_unparse (constraintExprData_binaryExprGetExpr2 (ex->data) )
1588 st = message ("%q %q %q",
1589 constraintExpr_unparse (constraintExprData_binaryExprGetExpr1 (ex->data)),
1590 constraintExprBinaryOpKind_print (constraintExprData_binaryExprGetOp (ex->data)),
1591 constraintExpr_unparse (constraintExprData_binaryExprGetExpr2 (ex->data))
1598 st = message ("error");
1602 DPRINTF((message ("constraintExpr_unparse: '%s'",st) ) );
1606 constraintExpr constraintExpr_doSRefFixBaseParam (/*@returned@*/ constraintExpr expr, exprNodeList arglist)
1608 constraintTerm Term;
1609 constraintExprKind kind;
1610 constraintExpr expr1, expr2;
1611 constraintExprData data;
1612 llassert (expr != NULL);
1621 Term = constraintExprData_termGetTerm(data);
1622 Term = constraintTerm_copy(Term);
1624 Term = constraintTerm_doSRefFixBaseParam (Term, arglist);
1625 data = constraintExprData_termSetTerm(data, Term);
1628 expr1 = constraintExprData_unaryExprGetExpr (data);
1629 expr1 = constraintExpr_copy(expr1);
1631 expr1 = constraintExpr_doSRefFixBaseParam (expr1, arglist);
1632 data = constraintExprData_unaryExprSetExpr (data, expr1);
1635 expr1 = constraintExprData_binaryExprGetExpr1 (data);
1636 expr2 = constraintExprData_binaryExprGetExpr2 (data);
1638 expr1 = constraintExpr_copy(expr1);
1639 expr2 = constraintExpr_copy(expr2);
1641 expr1 = constraintExpr_doSRefFixBaseParam (expr1, arglist);
1642 data = constraintExprData_binaryExprSetExpr1 (data, expr1);
1643 expr2 = constraintExpr_doSRefFixBaseParam (expr2, arglist);
1644 data = constraintExprData_binaryExprSetExpr2 (data, expr2);
1655 / *@only@* / constraintExpr constraintExpr_doSRefFixInvarConstraint (/ *@only@* / constraintExpr expr, sRef s, ctype ct)
1657 constraintExprKind kind;
1658 constraintExpr expr1, expr2;
1659 constraintExprData data;
1660 llassert (expr != NULL);
1669 expr = doSRefFixInvarConstraintTerm (expr, s, ct);
1672 expr1 = constraintExprData_unaryExprGetExpr (data);
1673 expr1 = constraintExpr_copy(expr1);
1674 expr1 = constraintExpr_doSRefFixInvarConstraint (expr1, s, ct);
1675 data = constraintExprData_unaryExprSetExpr (data, expr1);
1678 expr1 = constraintExprData_binaryExprGetExpr1 (data);
1679 expr2 = constraintExprData_binaryExprGetExpr2 (data);
1681 expr1 = constraintExpr_copy(expr1);
1682 expr2 = constraintExpr_copy(expr2);
1684 expr1 = constraintExpr_doSRefFixInvarConstraint (expr1, s, ct);
1685 data = constraintExprData_binaryExprSetExpr1 (data, expr1);
1686 expr2 = constraintExpr_doSRefFixInvarConstraint (expr2, s, ct);
1687 data = constraintExprData_binaryExprSetExpr2 (data, expr2);
1698 /*@only@*/ constraintExpr constraintExpr_doSRefFixConstraintParam (/*@only@*/ constraintExpr expr, exprNodeList arglist) /*@modifies expr@*/
1700 constraintExprKind kind;
1701 constraintExpr expr1, expr2;
1702 constraintExprData data;
1703 llassert (expr != NULL);
1712 expr = doSRefFixConstraintParamTerm (expr, arglist);
1715 expr1 = constraintExprData_unaryExprGetExpr (data);
1716 expr1 = constraintExpr_copy(expr1);
1717 expr1 = constraintExpr_doSRefFixConstraintParam (expr1, arglist);
1718 data = constraintExprData_unaryExprSetExpr (data, expr1);
1721 expr1 = constraintExprData_binaryExprGetExpr1 (data);
1722 expr2 = constraintExprData_binaryExprGetExpr2 (data);
1724 expr1 = constraintExpr_copy(expr1);
1725 expr2 = constraintExpr_copy(expr2);
1727 expr1 = constraintExpr_doSRefFixConstraintParam (expr1, arglist);
1728 data = constraintExprData_binaryExprSetExpr1 (data, expr1);
1729 expr2 = constraintExpr_doSRefFixConstraintParam (expr2, arglist);
1730 data = constraintExprData_binaryExprSetExpr2 (data, expr2);
1740 /*@only@*/ constraintExpr constraintExpr_doFixResult (/*@only@*/ constraintExpr expr, /*@observer@*/ exprNode fcnCall)
1742 constraintExprKind kind;
1743 constraintExpr expr1, expr2;
1744 constraintExprData data;
1745 llassert (expr != NULL);
1754 expr = doFixResultTerm (expr, fcnCall);
1757 expr1 = constraintExprData_unaryExprGetExpr (data);
1758 expr1 = constraintExpr_copy(expr1);
1760 expr1 = constraintExpr_doFixResult (expr1, fcnCall);
1761 data = constraintExprData_unaryExprSetExpr (data, expr1);
1764 expr1 = constraintExprData_binaryExprGetExpr1 (data);
1765 expr2 = constraintExprData_binaryExprGetExpr2 (data);
1767 expr1 = constraintExpr_copy(expr1);
1768 expr2 = constraintExpr_copy(expr2);
1770 expr1 = constraintExpr_doFixResult (expr1, fcnCall);
1771 data = constraintExprData_binaryExprSetExpr1 (data, expr1);
1772 expr2 = constraintExpr_doFixResult (expr2, fcnCall);
1773 data = constraintExprData_binaryExprSetExpr2 (data, expr2);
1783 cstring constraintExpr_print (constraintExpr expr) /*@*/
1785 return constraintExpr_unparse (expr);
1788 bool constraintExpr_hasMaxSet (constraintExpr expr) /*@*/
1792 t = constraintExpr_unparse(expr);
1794 if (cstring_containsLit(t, "maxSet") != NULL )
1808 /*returns 1 0 -1 like strcmp
1814 int constraintExpr_compare (constraintExpr expr1, constraintExpr expr2)
1816 long value1, value2;
1818 if (constraintExpr_similar (expr1, expr2) )
1823 value1 = constraintExpr_getValue(expr1);
1824 value2 = constraintExpr_getValue(expr2);
1826 if (value1 > value2)
1829 if (value1 == value2)
1836 long constraintExpr_getValue (constraintExpr expr)
1838 llassert (constraintExpr_isDefined(expr) );
1839 llassert (expr->kind == term);
1841 return (constraintTerm_getValue (constraintExprData_termGetTerm (expr->data)));
1844 bool constraintExpr_canGetValue (constraintExpr expr)
1846 llassert ( constraintExpr_isDefined (expr) );
1847 if (constraintExpr_isUndefined (expr) )
1855 return constraintTerm_canGetValue (constraintExprData_termGetTerm (expr->data) );
1864 fileloc constraintExpr_loc (constraintExpr expr)
1868 constraintExprKind kind;
1870 llassert ( constraintExpr_isDefined (expr) );
1871 if (constraintExpr_isUndefined (expr) )
1873 return fileloc_undefined;
1882 t = constraintExprData_termGetTerm (expr->data);
1883 return (constraintTerm_getFileloc (t) );
1887 e = constraintExprData_unaryExprGetExpr (expr->data);
1888 return (constraintExpr_loc (e) );
1892 e = constraintExprData_binaryExprGetExpr1 (expr->data);
1893 return (constraintExpr_loc (e) );
1898 return (fileloc_undefined);
1901 /*drl moved from constriantTerm.c 5/20/001*/
1902 static /*@only@*/ constraintExpr
1903 doFixResultTerm (/*@only@*/ constraintExpr e, /*@exposed@*/ exprNode fcnCall)
1907 constraintExprData data;
1908 constraintExprKind kind;
1911 llassert (constraintExpr_isDefined (e) );
1916 llassert (kind == term);
1918 t = constraintExprData_termGetTerm (data);
1919 llassert (constraintTerm_isDefined (t));
1923 switch (constraintTerm_getKind (t))
1926 case CTT_INTLITERAL:
1930 s = constraintTerm_getSRef(t);
1931 if (sRef_isResult (s))
1933 ret = constraintExpr_makeExprNode(fcnCall);
1934 constraintExpr_free(e);
1952 /*to be used for structure checking */
1954 / *@only@* / static constraintExpr
1955 doSRefFixInvarConstraintTerm (/ *@only@* / constraintExpr e,
1960 constraintExprData data = e->data;
1962 constraintExprKind kind = e->kind;
1966 llassert(kind == term);
1968 t = constraintExprData_termGetTerm (data);
1969 llassert (constraintTerm_isDefined(t) );
1973 DPRINTF (("Fixing: %s", constraintExpr_print (e)));
1975 switch (constraintTerm_getKind(t))
1978 DPRINTF((message ("%q @ %q ", constraintTerm_unparse(t),
1979 fileloc_unparse (constraintTerm_getFileloc(t) ) ) ));
1981 case CTT_INTLITERAL:
1982 DPRINTF((message (" %q ", constraintTerm_unparse (t)) ));
1986 / * evans 2001-07-24: constants should use the original term * /
1987 if (!constraintTerm_canGetValue (t))
1990 DPRINTF ((message("Doing sRef_fixInvarConstraint for %q ",
1991 constraintTerm_unparse (t) ) ));
1993 snew = fixSref (ct, s, constraintTerm_getSRef(t));
1995 ret = constraintExpr_makeTermsRef(snew);
1997 constraintExpr_free (e);
1999 DPRINTF (( message("After Doing sRef_fixConstraintParam constraintExpr is %q ",
2000 constraintExpr_print (ret) ) ));
2001 / *@-branchstate@* /
2002 } / *@=branchstate@* /
2014 /*drl moved from constriantTerm.c 5/20/001*/
2015 /*@only@*/ static constraintExpr
2016 doSRefFixConstraintParamTerm (/*@only@*/ constraintExpr e, /*@observer@*/ /*@temp@*/ exprNodeList arglist)
2020 constraintExprData data;
2022 constraintExprKind kind;
2027 llassert(constraintExpr_isDefined (e) );
2035 llassert(kind == term);
2037 t = constraintExprData_termGetTerm (data);
2038 llassert (constraintTerm_isDefined(t) );
2042 DPRINTF (("Fixing: %s", constraintExpr_print (e)));
2044 switch (constraintTerm_getKind(t))
2047 DPRINTF((message ("%q @ %q ", constraintTerm_unparse(t),
2048 fileloc_unparse (constraintTerm_getFileloc(t) ) ) ));
2050 case CTT_INTLITERAL:
2051 DPRINTF((message (" %q ", constraintTerm_unparse (t)) ));
2054 /* evans 2001-07-24: constants should use the original term */
2055 if (!constraintTerm_canGetValue (t))
2057 DPRINTF ((message("Doing sRef_fixConstraintParam for %q ",
2058 constraintTerm_unparse (t) ) ));
2059 ret = sRef_fixConstraintParam (constraintTerm_getSRef(t), arglist);
2061 constraintExpr_free (e);
2063 DPRINTF (( message("After Doing sRef_fixConstraintParam constraintExpr is %q ",
2064 constraintExpr_print (ret) ) ));
2066 } /*@=branchstate@*/
2079 bool constraintExpr_includesTerm (constraintExpr expr, constraintTerm term)
2081 if (constraintTerm_hasTerm (expr->term, term) )
2084 if ((expr->expr) != NULL)
2086 return ( constraintExpr_includesTerm (expr->expr, term) );
2093 /*drl added 6/11/01 */
2094 bool constraintExpr_isBinaryExpr (/*@observer@*/ constraintExpr c)
2097 llassert(constraintExpr_isDefined (c) );
2099 if ( ! (constraintExpr_isDefined (c) ) )
2102 if (c->kind == binaryexpr)
2109 /*drl added 8/08/001 */
2110 bool constraintExpr_isTerm (/*@observer@*/ constraintExpr c) /*@*/
2112 llassert(constraintExpr_isDefined (c) );
2114 if (c->kind == term)
2121 /*@observer@*/ /*@temp@*/ constraintTerm constraintExpr_getTerm ( /*@temp@*/ /*@observer@*/ constraintExpr c) /*@*/
2123 constraintTerm term;
2125 llassert(constraintExpr_isDefined (c) );
2127 llassert(constraintExpr_isTerm(c) );
2129 term = constraintExprData_termGetTerm(c->data);
2134 static void binaryExpr_dump (/*@observer@*/ constraintExprData data, FILE *f)
2136 constraintExpr expr1;
2137 constraintExprBinaryOpKind binaryOp;
2138 constraintExpr expr2;
2141 binaryOp = constraintExprData_binaryExprGetOp (data);
2143 fprintf(f, "%d\n", (int) binaryOp);
2145 expr1 = constraintExprData_binaryExprGetExpr1 (data);
2146 expr2 = constraintExprData_binaryExprGetExpr2 (data);
2150 constraintExpr_dump(expr1, f);
2153 constraintExpr_dump(expr2, f);
2157 static constraintExpr binaryExpr_undump (FILE *f)
2159 constraintExpr expr1;
2160 constraintExprBinaryOpKind binaryOp;
2161 constraintExpr expr2;
2170 os = mstring_create (MAX_DUMP_LINE_LENGTH);
2172 str = fgets(os, MAX_DUMP_LINE_LENGTH, f);
2174 if (! mstring_isDefined(str) )
2176 llfatalbug(message("Library file is corrupted") );
2179 binaryOp = (constraintExprBinaryOpKind) reader_getInt(&str);
2181 str = fgets(os, MAX_DUMP_LINE_LENGTH, f);
2183 if (! mstring_isDefined(str) )
2185 llfatalbug(message("Library file is corrupted") );
2188 reader_checkChar (&str, 'e');
2189 reader_checkChar (&str, '1');
2191 expr1 = constraintExpr_undump (f);
2193 str = fgets(os, MAX_DUMP_LINE_LENGTH, f);
2195 reader_checkChar (&str, 'e');
2196 reader_checkChar (&str, '2');
2198 expr2 = constraintExpr_undump (f);
2200 ret = constraintExpr_makeBinaryOpConstraintExpr (expr1, expr2);
2201 ret->data = constraintExprData_binaryExprSetOp(ret->data, binaryOp);
2209 static void unaryExpr_dump (/*@observer@*/ constraintExprData data, FILE *f)
2212 constraintExpr expr;
2213 constraintExprUnaryOpKind unaryOp;
2215 unaryOp = constraintExprData_unaryExprGetOp (data);
2217 fprintf(f, "%d\n", (int) unaryOp);
2219 expr = constraintExprData_unaryExprGetExpr (data);
2221 constraintExpr_dump(expr, f);
2224 static constraintExpr unaryExpr_undump ( FILE *f)
2227 constraintExpr expr;
2228 constraintExprUnaryOpKind unaryOp;
2234 str = mstring_create (MAX_DUMP_LINE_LENGTH);
2236 str = fgets(os, MAX_DUMP_LINE_LENGTH, f);
2238 if (! mstring_isDefined(str) )
2240 llfatalbug(message("Library file is corrupted") );
2243 unaryOp = (constraintExprUnaryOpKind) reader_getInt(&str);
2245 expr = constraintExpr_undump (f);
2247 ret = constraintExpr_makeUnaryOp (expr, unaryOp);
2254 void constraintExpr_dump (/*@observer@*/ constraintExpr expr, FILE *f)
2256 constraintExprKind kind;
2260 llassert(constraintExpr_isDefined(expr) );
2262 DPRINTF((message("constraintExpr_dump:: dumping constraintExpr %s",
2263 constraintExpr_unparse(expr)
2268 fprintf(f,"%d\n", (int) kind);
2273 t = constraintExprData_termGetTerm (expr->data);
2274 constraintTerm_dump (t, f);
2277 unaryExpr_dump (expr->data, f);
2280 binaryExpr_dump (expr->data, f);
2285 /*@only@*/ constraintExpr constraintExpr_undump (FILE *f)
2287 constraintExprKind kind;
2294 s = mstring_create (MAX_DUMP_LINE_LENGTH);
2298 s = fgets(os, MAX_DUMP_LINE_LENGTH, f);
2300 if (! mstring_isDefined(s) )
2302 llfatalbug(message("Library file is corrupted") );
2305 kind = (constraintExprKind) reader_getInt(&s);
2312 t = constraintTerm_undump (f);
2313 ret = constraintExpr_makeTerm(t);
2316 ret = unaryExpr_undump (f);
2319 ret = binaryExpr_undump (f);
2327 int constraintExpr_getDepth (constraintExpr ex)
2331 constraintExprKind kind;
2333 llassert (ex != NULL);
2343 ret = constraintExpr_getDepth (constraintExprData_unaryExprGetExpr (ex->data) );
2349 ret = constraintExpr_getDepth (constraintExprData_binaryExprGetExpr1 (ex->data) );
2353 ret += constraintExpr_getDepth (constraintExprData_binaryExprGetExpr2 (ex->data) );
2364 bool constraintExpr_canGetCType (constraintExpr e) /*@*/
2366 if (constraintExpr_isUndefined(e))
2369 if (e->kind == term)
2375 DPRINTF (("constraintExpr_canGetCType: can't get type for %s", constraintExpr_unparse (e)));
2380 ctype constraintExpr_getCType (constraintExpr e) /*@*/
2384 llassert (constraintExpr_isDefined (e));
2385 llassert (constraintExpr_canGetCType (e));
2390 t = constraintExprData_termGetTerm (e->data);
2391 return (constraintTerm_getCType(t) );
2392 /* assume that a unary expression will be an int ... */
2394 return ctype_unknown; /* was ctype_signedintegral; */
2395 /* drl for just return type of first operand */
2397 return (constraintExpr_getCType (constraintExprData_binaryExprGetExpr1 (e->data)));
2404 /* drl add 10-5-001 */
2406 static bool constraintExpr_hasTypeChange (constraintExpr e)
2408 llassert(constraintExpr_isDefined(e));
2410 if (constraintExpr_isDefined((e)) && (e->ct == TRUE))
2415 if (e->kind == unaryExpr)
2417 if (constraintExprData_unaryExprGetOp (e->data) == MAXSET)
2419 constraintExpr ce = constraintExprData_unaryExprGetExpr(e->data);
2420 DPRINTF (("Unary type change: [%x] %s", ce, constraintExpr_unparse (ce)));
2421 DPRINTF (("Types: %s / %s", ctype_unparse (constraintExpr_getCType (ce)),
2422 ctype_unparse (constraintExpr_getOrigType (ce))));
2423 return (constraintExpr_hasTypeChange(ce));
2430 /* drl add 10-5-001 */
2432 static ctype constraintExpr_getOrigType (constraintExpr e)
2434 llassert (constraintExpr_isDefined (e));
2435 llassert (constraintExpr_hasTypeChange (e));
2442 if (e->kind == unaryExpr)
2444 if (constraintExprData_unaryExprGetOp (e->data) == MAXSET)
2446 constraintExpr ce = constraintExprData_unaryExprGetExpr (e->data);
2447 return (constraintExpr_getOrigType(ce));
2455 /*drl added these around 10/18/001*/
2457 static /*@only@*/ constraintExpr constraintExpr_div (/*@only@*/ constraintExpr e, ctype tfrom, ctype tto, fileloc loc)
2459 int sizefrom = ctype_getSize (tfrom);
2460 int sizeto = ctype_getSize (tto);
2462 DPRINTF (("constraintExpr_div: %s", constraintExpr_unparse (e)));
2463 DPRINTF (("Types: %s / %s",
2464 ctype_unparse (tfrom),
2465 ctype_unparse (tto)));
2467 if (sizefrom == -1) {
2468 llbug (message ("constraintExpr_div: type size unknown: %s", ctype_unparse (tfrom)));
2472 llbug (message ("constraintExpr_div: type size unknown: %s", ctype_unparse (tto)));
2475 if (sizeto == sizefrom)
2477 ; /* Sizes match, a-ok */
2481 float scale = (float) sizefrom / (float) sizeto;
2487 llassert (e->kind == term);
2488 ct = constraintExprData_termGetTerm (e->data);
2489 llassert (constraintTerm_canGetValue (ct));
2490 val = constraintTerm_getValue (ct);
2492 DPRINTF (("Scaling constraints by: %ld * %f", val, scale));
2494 // If scale * val is not an integer, give a warning
2495 fnewval = val * scale;
2496 newval = (long) fnewval;
2498 DPRINTF (("Values: %f / %ld", fnewval, newval));
2499 if ((fnewval - (float) newval) > FLT_EPSILON)
2501 voptgenerror (FLG_ALLOCMISMATCH,
2502 message ("Allocated memory is converted to type %s of (size %d), "
2503 "which is not divisible into original allocation of space for %d elements of type %s (size %d)",
2504 ctype_unparse (tto), sizeto,
2505 val, ctype_unparse (tfrom), sizefrom),
2509 constraintTerm_setValue (ct, newval);
2512 DPRINTF (("After div: %s", constraintExpr_unparse (e)));
2517 /*@access exprNode@*/
2518 static /*@only@*/ constraintExpr constraintTerm_simpleDivTypeExprNode (/*@only@*/ constraintExpr e, ctype tfrom, ctype tto, fileloc loc)
2521 exprNode t1, t2, expr;
2525 llassert (constraintExpr_isDefined(e) );
2527 DPRINTF (("constraintTerm_simpleDivTypeExprNode e=%s [%s => %s]", constraintExpr_print(e),
2528 ctype_unparse(tfrom), ctype_unparse (tto)));
2530 t = constraintExprData_termGetTerm (e->data);
2532 expr = constraintTerm_getExprNode (t);
2534 llassert (constraintExpr_isDefined(e));
2535 llassert (exprNode_isDefined(expr));
2537 if (expr->kind == XPR_OP)
2541 t1 = exprData_getOpA (data);
2542 t2 = exprData_getOpB (data);
2543 tok = exprData_getOpTok (data);
2545 if (lltok_isMult (tok))
2547 llassert (exprNode_isDefined(t1) && exprNode_isDefined(t2) );
2548 /*drl 3/2/2003 we know this from the fact that it's a
2549 multiplication operation...*/
2551 if ((t1->kind == XPR_SIZEOF) || (t1->kind == XPR_SIZEOFT))
2555 if (t1->kind == XPR_SIZEOFT)
2557 ct2 = qtype_getType (exprData_getType (t1->edata));
2561 exprNode tempE = exprData_getSingle (t1->edata);
2562 ct2 = exprNode_getType (tempE);
2565 if (ctype_match (ctype_makePointer(ct2), tfrom)) //!
2567 /* this is a bit sloopy but ... */
2568 constraintExpr_free(e);
2569 return constraintExpr_makeExprNode (t2);
2573 /* nothing was here */
2574 DPRINTF (("MISMATCHING TYPES!"));
2577 else if ((t2->kind == XPR_SIZEOF) || (t2->kind == XPR_SIZEOFT))
2581 if (t2->kind == XPR_SIZEOFT)
2583 ct2 = qtype_getType (exprData_getType (t2->edata));
2590 exprTemp = exprData_getSingle (t2->edata);
2592 llassert (exprNode_isDefined (exprTemp));
2593 eDTemp = exprTemp->edata;
2595 ct2 = qtype_getType (exprData_getType(eDTemp ));
2599 if (ctype_match (ctype_makePointer (ct2), tfrom))
2601 /*a bit of a sloopy way to do this but... */
2602 constraintExpr_free(e);
2603 return constraintExpr_makeExprNode (t1);
2608 DPRINTF (("NOT A SIZEOF!"));
2615 return (constraintExpr_div (e, tfrom, tto, loc));
2617 /*@noaccess exprNode@*/
2619 static /*@only@*/ constraintExpr simpleDivType (/*@only@*/ constraintExpr e, ctype tfrom, ctype tto, fileloc loc)
2621 DPRINTF (("simpleDiv got %s", constraintExpr_unparse(e)));
2622 DPRINTF (("Types: %s / %s",
2623 ctype_unparse (tfrom),
2624 ctype_unparse (tto)));
2626 llassert (constraintExpr_isDefined(e));
2632 constraintTerm t = constraintExprData_termGetTerm (e->data);
2634 DPRINTF (("Term: %s", constraintTerm_unparse (t)));
2636 if (constraintTerm_isExprNode (t))
2638 return constraintTerm_simpleDivTypeExprNode (e, tfrom, tto, loc);
2640 /* search for * size of ct and remove */
2642 DPRINTF (("Here: %s / %s -> %s", constraintExpr_unparse (e), ctype_unparse (tfrom), ctype_unparse (tto)));
2643 return constraintExpr_div (e, tfrom, tto, loc);
2648 constraintExpr temp;
2650 temp = constraintExprData_binaryExprGetExpr1 (e->data);
2651 temp = constraintExpr_copy(temp);
2652 temp = simpleDivType (temp, tfrom, tto, loc);
2654 e->data = constraintExprData_binaryExprSetExpr1 (e->data, temp);
2656 temp = constraintExprData_binaryExprGetExpr2 (e->data);
2657 temp = constraintExpr_copy(temp);
2658 temp = simpleDivType (temp, tfrom, tto, loc);
2659 e->data = constraintExprData_binaryExprSetExpr2 (e->data, temp);
2661 DPRINTF (("simpleDiv binaryexpr returning %s ", constraintExpr_unparse(e)));
2666 return constraintExpr_div (e, tfrom, tto, loc);
2674 static /*@only@*/ constraintExpr constraintExpr_adjustMaxSetForCast (/*@only@*/ constraintExpr e, ctype tfrom,
2675 ctype tto, fileloc loc)
2677 DPRINTF (("constraintExpr_adjustMaxSetForCast got %s [%s => %s]", constraintExpr_unparse(e),
2678 ctype_unparse (tfrom), ctype_unparse (tto)));
2680 e = constraintExpr_makeIncConstraintExpr (e);
2681 e = constraintExpr_simplify (e);
2682 e = simpleDivType (e, tfrom, tto, loc);
2683 e = constraintExpr_makeDecConstraintExpr (e);
2684 e = constraintExpr_simplify (e);
2686 DPRINTF (("constraintExpr_adjustMaxSetForCast returning %s ", constraintExpr_unparse(e)));
2691 bool constraintExpr_isConstantOnly (constraintExpr e)
2693 DPRINTF (("constraintExpr_isConstantOnly %s ", constraintExpr_unparse(e)));
2694 llassert (constraintExpr_isDefined(e));
2700 constraintTerm t = constraintExprData_termGetTerm(e->data);
2702 if (constraintTerm_isConstantOnly (t))
2714 constraintExpr temp1 = constraintExprData_binaryExprGetExpr1 (e->data);
2715 constraintExpr temp2 = constraintExprData_binaryExprGetExpr2 (e->data);
2717 if (constraintExpr_isConstantOnly(temp1) &&
2718 constraintExpr_isConstantOnly(temp2) )
2730 constraintExpr temp;
2732 temp = constraintExprData_unaryExprGetExpr (e->data );
2734 if (constraintExpr_isConstantOnly(temp) )