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"
41 /*@access exprNode@*/ /* !!! NO! Don't do this recklessly! */
42 /*@-nullderef@*/ /* !!! DRL needs to fix this code! */
43 /*@-nullstate@*/ /* !!! DRL needs to fix this code! */
44 /*@-temptrans@*/ /* !!! DRL needs to fix this code! */
47 static ctype constraintExpr_getOrigType (constraintExpr p_e);
48 static bool constraintExpr_hasTypeChange(constraintExpr p_e) /*@*/;
50 static /*@only@*/ constraintExpr constraintExpr_makeBinaryOpConstraintExprIntLiteral (/*@only@*/constraintExpr p_expr, int p_literal);
53 /*@only@*/ static constraintExpr
54 doSRefFixInvarConstraintTerm (/*@only@*/ constraintExpr p_e,
55 sRef p_s, ctype p_ct);
57 /*@only@*/ static constraintExpr
58 doSRefFixConstraintParamTerm (/*@only@*/ constraintExpr p_e, /*@temp@*/ /*@observer@*/ exprNodeList p_arglist) /*@modifies p_e@*/;
60 static /*@only@*/ constraintExpr
61 doFixResultTerm (/*@only@*/ constraintExpr p_e, /*@exposed@*/ exprNode p_fcnCall)
64 static bool constraintExpr_canGetCType (constraintExpr p_e) /*@*/;
66 static ctype constraintExpr_getCType (constraintExpr p_e);
68 static /*@only@*/ constraintExpr constraintExpr_adjustMaxSetForCast(/*@only@*/ constraintExpr p_e, ctype p_ct);
70 /*@special@*/ static constraintExpr constraintExpr_makeBinaryOp (void)
71 /* @allocates result->data @ @sets result->kind @ */ ;
73 void constraintExpr_free (/*@only@*/ constraintExpr expr)
75 if (constraintExpr_isDefined(expr) )
80 constraintExprData_freeUnaryExpr(expr->data);
83 constraintExprData_freeBinaryExpr(expr->data);
86 constraintExprData_freeTerm(expr->data);
97 llcontbug(message("attempted to free null pointer in constraintExpr_free"));
101 bool constraintExpr_isLit (constraintExpr expr)
103 llassert (expr != NULL);
105 if (expr->kind == term)
107 constraintTerm term = constraintExprData_termGetTerm (expr->data);
108 if (constraintTerm_isIntLiteral (term) )
117 static bool isZeroBinaryOp (constraintExpr expr)
121 llassert (expr != NULL); /* evans 2001-07-18 */
123 if (!constraintExpr_isBinaryExpr (expr) )
129 e2 = constraintExprData_binaryExprGetExpr2(expr->data);
131 llassert (e2 != NULL); /* evans 2001-07-18 */
133 if (constraintExpr_isBinaryExpr (e2) )
136 constraintExprBinaryOpKind op;
138 op = constraintExprData_binaryExprGetOp (e2->data);
140 e1 = constraintExprData_binaryExprGetExpr1(e2->data);
142 if (constraintExpr_isLit(e1) )
144 if (constraintExpr_getValue(e1) == 0 )
153 /* change expr + (o - expr) to (expr -expr) */
155 /*@only@*/ static constraintExpr removeZero (/*@only@*/ /*@returned@*/ constraintExpr expr)
157 constraintExpr expr1, expr2;
161 constraintExprBinaryOpKind op;
163 constraintExprBinaryOpKind tempOp;
165 if (!isZeroBinaryOp(expr) )
168 llassert (expr != NULL); /* evans 2001-07-18 */
170 expr1 = constraintExprData_binaryExprGetExpr1(expr->data);
171 expr2 = constraintExprData_binaryExprGetExpr2(expr->data);
172 op = constraintExprData_binaryExprGetOp(expr->data);
174 llassert( constraintExpr_isBinaryExpr(expr2) );
176 temp = constraintExprData_binaryExprGetExpr2 (expr2->data);
177 temp = constraintExpr_copy (temp);
179 tempOp = constraintExprData_binaryExprGetOp (expr2->data);
181 if (op == BINARYOP_PLUS)
183 else if (op == BINARYOP_MINUS)
185 if (tempOp == BINARYOP_PLUS)
187 else if (tempOp == BINARYOP_MINUS)
195 expr->data = constraintExprData_binaryExprSetExpr2(expr->data, temp);
196 expr->data = constraintExprData_binaryExprSetOp(expr->data, op);
202 /*@only@*/ constraintExpr constraintExpr_propagateConstants (/*@only@*/ constraintExpr expr,
203 /*@out@*/ bool * propagate,
204 /*@out@*/ int *literal)
206 constraintExpr expr1;
207 constraintExpr expr2;
208 bool propagate1, propagate2;
209 int literal1, literal2;
210 constraintExprBinaryOpKind op;
222 llassert (expr != NULL);
224 /* we simplify unaryExpr elsewhere */
225 if (expr->kind != binaryexpr)
228 op = constraintExprData_binaryExprGetOp (expr->data);
230 DPRINTF((message("constraintExpr_propagateConstants: binaryexpr: %s", constraintExpr_unparse(expr) ) ) );
232 expr = removeZero(expr);
234 expr1 = constraintExprData_binaryExprGetExpr1(expr->data);
235 expr2 = constraintExprData_binaryExprGetExpr2(expr->data);
237 expr1 = constraintExpr_copy(expr1);
238 expr2 = constraintExpr_copy(expr2);
240 expr1 = constraintExpr_propagateConstants (expr1, &propagate1, &literal1);
241 expr2 = constraintExpr_propagateConstants (expr2, &propagate2, &literal2);
243 expr1 = removeZero(expr1);
244 expr2 = removeZero(expr2);
247 *propagate = propagate1 || propagate2;
249 if (op == BINARYOP_PLUS)
250 *literal = literal1 + literal2;
251 else if (op == BINARYOP_MINUS)
252 *literal = literal1 - literal2;
256 if ( constraintExpr_isLit (expr1) && constraintExpr_isLit (expr2) )
259 t1 = constraintExpr_getValue (expr1);
260 t2 = constraintExpr_getValue (expr2);
261 llassert(*propagate == FALSE);
264 constraintExpr_free (expr);
265 constraintExpr_free (expr1);
266 constraintExpr_free (expr2);
268 if (op == BINARYOP_PLUS )
269 return (constraintExpr_makeIntLiteral ((t1+t2) ));
270 else if (op == BINARYOP_MINUS)
271 return (constraintExpr_makeIntLiteral ((t1-t2) ));
277 if (constraintExpr_isLit (expr1) )
281 *literal += constraintExpr_getValue (expr1);
283 if (op == BINARYOP_PLUS)
285 constraintExpr_free(expr1);
286 constraintExpr_free(expr);
289 else if (op == BINARYOP_MINUS)
294 /* this is an ugly kludge to deal with not
295 having a unary minus operation...*/
297 temp = constraintExpr_makeIntLiteral (0);
298 temp = constraintExpr_makeSubtractExpr (temp, expr2);
300 constraintExpr_free(expr1);
301 constraintExpr_free(expr);
307 BADBRANCH; /* evans 2001-07-18 */
311 if (constraintExpr_isLit (expr2) )
315 if ( op == BINARYOP_PLUS )
316 *literal += constraintExpr_getValue (expr2);
317 else if (op == BINARYOP_MINUS)
318 *literal -= constraintExpr_getValue (expr2);
323 constraintExpr_free(expr2);
324 constraintExpr_free(expr);
328 DPRINTF((message("constraintExpr_propagateConstants returning: %s", constraintExpr_unparse(expr) ) ) );
330 expr->data = constraintExprData_binaryExprSetExpr1 (expr->data, expr1);
331 expr->data = constraintExprData_binaryExprSetExpr2 (expr->data, expr2);
333 expr = removeZero(expr);
337 /*@only@*/ static constraintExpr constraintExpr_combineConstants (/*@only@*/ constraintExpr expr ) /*@modifies expr@*/
342 DPRINTF ((message ("Before combine %s", constraintExpr_unparse(expr) ) ) );
343 expr = constraintExpr_propagateConstants (expr, &propagate, &literal);
352 ret = constraintExpr_makeBinaryOpConstraintExprIntLiteral (expr, literal);
356 DPRINTF ((message ("After combine %s", constraintExpr_unparse(expr) ) ) );
361 static /*@notnull@*/ constraintExpr constraintExpr_alloc (void) /*@post:isnull result->data@*/
364 ret = dmalloc (sizeof (*ret) );
368 ret->origType = ctype_undefined;
372 /*@only@*/ static constraintExprData copyExprData (/*@observer@*/ constraintExprData data, constraintExprKind kind)
374 constraintExprData ret;
375 llassert(constraintExprData_isDefined(data));
380 ret = constraintExprData_copyBinaryExpr(data);
383 ret = constraintExprData_copyUnaryExpr(data);
386 ret = constraintExprData_copyTerm(data);
394 constraintExpr constraintExpr_copy (constraintExpr expr)
397 ret = constraintExpr_alloc ();
398 ret->kind = expr->kind;
400 ret->data = copyExprData (expr->data, expr->kind);
402 ret->origType = expr->origType;
407 /*@only@*/ static constraintExpr oldconstraintExpr_makeTermExprNode ( /*@dependent@*/ exprNode e)
411 ret = constraintExpr_alloc();
413 ret->data = dmalloc (sizeof *(ret->data) );
414 t = constraintTerm_makeExprNode (e);
415 ret->data = constraintExprData_termSetTerm (ret->data, t);
417 ret->origType = ctype_undefined;
422 constraintExpr constraintExpr_makeExprNode (exprNode e)
425 constraintExpr ret, ce1, ce2;
431 llassert (e != NULL);
438 t = exprData_getSingle (data);
439 s = exprNode_getSref (t);
440 if (sRef_isFixedArray(s) )
444 size = (int) sRef_getArraySize(s);
445 ret = constraintExpr_makeIntLiteral (size);
449 DPRINTF ((message ("could not determine the size of %s", exprNode_unparse (e) ) ) );
450 ret = oldconstraintExpr_makeTermExprNode (e);
455 DPRINTF ((message ("Examining operation %s", exprNode_unparse (e) ) ) );
456 t1 = exprData_getOpA (data);
457 t2 = exprData_getOpB (data);
458 tok = exprData_getOpTok (data);
460 if (lltok_isPlus_Op (tok) || lltok_isMinus_Op (tok) )
462 ce1 = constraintExpr_makeExprNode (t1);
463 ce2 = constraintExpr_makeExprNode (t2);
464 ret = constraintExpr_parseMakeBinaryOp (ce1, tok, ce2);
469 /* uncomment this block to activate the cheesy heuristic
470 for handling sizeof expressions
475 We handle expressions containing sizeof with the rule
476 (sizeof type ) * Expr = Expr
478 This is the total wronge way to do this but...
479 it may be better than nothing
484 else if (lltok_isMult(tok) )
486 if ((t1->kind == XPR_SIZEOF) || (t1->kind == XPR_SIZEOFT) )
488 ret = constraintExpr_makeExprNode(t2);
490 else if ((t2->kind == XPR_SIZEOF) || (t2->kind == XPR_SIZEOFT) )
492 ret = constraintExpr_makeExprNode(t1);
496 ret = oldconstraintExpr_makeTermExprNode (e);
501 ret = oldconstraintExpr_makeTermExprNode (e);
505 t = exprData_getUopNode (data);
506 ret = constraintExpr_makeExprNode (t);
510 t = exprData_getUopNode (data);
511 tok = exprData_getUopTok (data);
512 if (lltok_isInc_Op (tok) )
515 temp = constraintExpr_makeExprNode(t);
516 ret = constraintExpr_makeIncConstraintExpr(temp);
518 else if (lltok_isDec_Op (tok) )
521 temp = constraintExpr_makeExprNode(t);
522 ret = constraintExpr_makeDecConstraintExpr(temp);
525 ret = oldconstraintExpr_makeTermExprNode (e);
529 t = exprData_getUopNode (data);
530 ret = constraintExpr_makeExprNode (t);
533 t = exprData_getCastNode (data);
534 ret = constraintExpr_makeExprNode (t);
537 t = exprData_getPairA(data);
538 ret = constraintExpr_makeExprNode(t);
539 /*@i3434*/ /* drl: I'm not sure if this is right. I'm adding a break to quiet Splint */
542 ret = oldconstraintExpr_makeTermExprNode (e);
548 /*@only@*/ constraintExpr constraintExpr_makeTermExprNode (/*@exposed@*/ exprNode e)
550 return oldconstraintExpr_makeTermExprNode(e);
553 static constraintExpr constraintExpr_makeTerm (/*@only@*/ constraintTerm t)
557 ret = constraintExpr_alloc();
559 ret->data = dmalloc (sizeof *(ret->data) );
560 ret->data->term = NULL;
561 ret->data = constraintExprData_termSetTerm (ret->data, t);
563 ret->origType = ctype_undefined;
568 constraintExpr constraintExpr_makeTermsRef (/*@temp@*/ sRef s)
572 ret = constraintExpr_alloc();
574 ret->data = dmalloc (sizeof *(ret->data) );
575 t = constraintTerm_makesRef (s);
576 ret->data = constraintExprData_termSetTerm (ret->data, t);
579 ret->origType = ctype_undefined;
584 /*@special@*/ static constraintExpr makeUnaryOpGeneric (void) /*@allocates result->data@*/ /*@defines result->kind@*/
587 ret = constraintExpr_alloc();
588 ret->kind = unaryExpr;
589 ret->data = dmalloc ( sizeof *(ret->data) );
590 ret->data->unaryOp.expr = constraintExpr_undefined;
594 /*@only@*/ static constraintExpr constraintExpr_makeUnaryOpConstraintExpr (/*@only@*/ constraintExpr cexpr)
597 ret = makeUnaryOpGeneric();
601 ret->data = constraintExprData_unaryExprSetExpr (ret->data, cexpr);
602 ret->data = constraintExprData_unaryExprSetOp (ret->data, UNARYOP_UNDEFINED);
611 /*@only@*/ static constraintExpr constraintExpr_makeUnaryOp (/*@only@*/ constraintExpr cexpr, constraintExprUnaryOpKind Op )
614 ret = makeUnaryOpGeneric();
616 ret->data = constraintExprData_unaryExprSetExpr (ret->data, cexpr);
617 ret->data = constraintExprData_unaryExprSetOp (ret->data, Op);
620 ret->origType = ctype_undefined;
626 static constraintExpr constraintExpr_makeMaxSetConstraintExpr (/*@only@*/ constraintExpr c)
629 ret = constraintExpr_makeUnaryOp (c, MAXSET);
634 static constraintExpr constraintExpr_makeUnaryOpExprNode (/*@exposed@*/ exprNode expr)
638 sub = constraintExpr_makeExprNode (expr);
639 ret = constraintExpr_makeUnaryOpConstraintExpr(sub);
647 static constraintExpr constraintExpr_makeSRefUnaryOp (/*@temp@*/ /*@observer@*/ sRef s, constraintExprUnaryOpKind op)
652 t = constraintExpr_makeTermsRef (s);
653 ret = constraintExpr_makeUnaryOpConstraintExpr (t);
654 ret->data = constraintExprData_unaryExprSetOp (ret->data, op);
660 constraintExpr constraintExpr_makeSRefMaxRead( sRef s)
662 return (constraintExpr_makeSRefUnaryOp (s, MAXREAD) );
666 constraintExpr constraintExpr_makeSRefMaxset ( sRef s)
668 return (constraintExpr_makeSRefUnaryOp (s, MAXSET) );
672 constraintExpr constraintExpr_parseMakeUnaryOp (lltok op, constraintExpr cexpr)
675 ret = constraintExpr_makeUnaryOpConstraintExpr ( cexpr);
680 ret->data = constraintExprData_unaryExprSetOp (ret->data, MAXSET);
683 ret->data = constraintExprData_unaryExprSetOp (ret->data, MAXREAD);
686 llfatalbug(message("Unhandled Operation in Constraint") );
692 constraintExpr constraintExpr_makeMaxSetExpr (/*@exposed@*/ exprNode expr)
695 ret = constraintExpr_makeExprNode (expr);
697 ret = constraintExpr_makeMaxSetConstraintExpr (ret);
699 llassert (ret != NULL);
704 constraintExpr constraintExpr_makeMaxReadExpr (exprNode expr)
707 ret = constraintExpr_makeUnaryOpExprNode(expr);
708 ret->data = constraintExprData_unaryExprSetOp (ret->data, MAXREAD);
714 /*@unused@*/ static constraintExpr constraintExpr_makeMinSetExpr (/*@exposed@*/ exprNode expr)
717 ret = constraintExpr_makeUnaryOpExprNode(expr);
718 ret->data = constraintExprData_unaryExprSetOp (ret->data, MINSET);
723 /*@unused@*/ static constraintExpr constraintExpr_makeMinReadExpr (/*@exposed@*/ exprNode expr)
726 ret = constraintExpr_makeUnaryOpExprNode(expr);
727 ret->data = constraintExprData_unaryExprSetOp (ret->data, MINREAD);
733 constraintExpr constraintExpr_makeValueExpr (/*@exposed@*/ exprNode expr)
736 ret = constraintExpr_makeExprNode (expr);
741 constraintExpr constraintExpr_makeIntLiteral (long i)
745 ret = constraintExpr_alloc();
747 ret->data = dmalloc (sizeof *(ret->data) );
748 t = constraintTerm_makeIntLiteral (i);
749 ret->data = constraintExprData_termSetTerm (ret->data, t);
752 ret->origType = ctype_undefined;
758 constraintExpr constraintExpr_makeValueInt (int i)
760 return constraintExpr_makeIntLiteral (i);
765 /*@special@*/ static constraintExpr constraintExpr_makeBinaryOp (void)
766 /*@allocates result->data @*/ /*@sets result->kind @*/
769 ret = constraintExpr_alloc();
770 ret->kind = binaryexpr;
771 ret->data = dmalloc ( sizeof *(ret->data) );
773 ret->data->binaryOp.expr1 = constraintExpr_undefined;
774 ret->data->binaryOp.expr2 = constraintExpr_undefined;
780 static /*@only@*/ constraintExpr constraintExpr_makeBinaryOpConstraintExpr (/*@only@*/constraintExpr expr1, /*@only@*/ constraintExpr expr2)
785 ret = constraintExpr_makeBinaryOp();
786 ret->data = constraintExprData_binaryExprSetExpr1 (ret->data, expr1);
787 ret->data = constraintExprData_binaryExprSetExpr2 (ret->data, expr2);
788 ret->data = constraintExprData_binaryExprSetOp (ret->data, BINARYOP_UNDEFINED);
791 ret->origType = ctype_undefined;
797 constraintExpr constraintExpr_parseMakeBinaryOp (/*@only@*/ constraintExpr expr1, lltok op,/*@only@*/ constraintExpr expr2)
800 ret = constraintExpr_makeBinaryOpConstraintExpr (expr1, expr2);
802 ret->data = constraintExprData_binaryExprSetOp(ret->data, BINARYOP_PLUS);
803 else if (op.tok == TMINUS)
804 ret->data = constraintExprData_binaryExprSetOp(ret->data, BINARYOP_MINUS);
814 /*@unused@*/ static constraintExpr constraintExpr_makeBinaryOpExprNode (/*@exposed@*/ exprNode expr1, /*@exposed@*/ exprNode expr2)
817 constraintExpr sub1, sub2;
818 sub1 = constraintExpr_makeTermExprNode (expr1);
819 sub2 = constraintExpr_makeTermExprNode (expr2);
820 ret = constraintExpr_makeBinaryOpConstraintExpr(sub1, sub2);
826 constraintExpr constraintExpr_makeBinaryOpConstraintExprIntLiteral (/*@only@*/ constraintExpr expr, int literal)
829 constraintExpr constExpr;
831 constExpr = constraintExpr_makeIntLiteral (literal);
832 ret = constraintExpr_makeBinaryOpConstraintExpr (expr, constExpr);
833 ret->data = constraintExprData_binaryExprSetOp(ret->data, BINARYOP_PLUS);
838 constraintExpr constraintExpr_makeDecConstraintExpr (/*@only@*/constraintExpr expr)
843 inc = constraintExpr_makeIntLiteral (1);
844 ret = constraintExpr_makeBinaryOpConstraintExpr (expr, inc);
845 ret->data = constraintExprData_binaryExprSetOp(ret->data, BINARYOP_MINUS);
850 /*@only@*/ constraintExpr constraintExpr_makeSubtractExpr (/*@only@*/ constraintExpr expr, /*@only@*/ constraintExpr addent)
854 DPRINTF ((message ("Making subtract expression") ) );
856 ret = constraintExpr_makeBinaryOpConstraintExpr (expr, addent);
857 ret->data = constraintExprData_binaryExprSetOp (ret->data, BINARYOP_MINUS);
862 constraintExpr constraintExpr_makeAddExpr (/*@only@*/
863 constraintExpr expr, /*@only@*/
864 constraintExpr addent)
868 DPRINTF ((message ("Doing addTerm simplification") ) );
870 ret = constraintExpr_makeBinaryOpConstraintExpr (expr, addent);
871 ret->data = constraintExprData_binaryExprSetOp (ret->data, BINARYOP_PLUS);
877 constraintExpr constraintExpr_makeIncConstraintExpr (/*@only@*/ constraintExpr expr)
882 inc = constraintExpr_makeIntLiteral (1);
883 ret = constraintExpr_makeBinaryOpConstraintExpr (expr, inc);
884 ret->data = constraintExprData_binaryExprSetOp(ret->data, BINARYOP_PLUS);
889 static cstring constraintExprUnaryOpKind_print (constraintExprUnaryOpKind op)
894 return message("maxSet");
896 return message("minSet");
898 return message("maxRead");
900 return message("minRead");
903 return message ("<(Unary OP OTHER>");
909 static cstring constraintExprBinaryOpKind_print (constraintExprBinaryOpKind op)
921 return message ("<binary OP Unknown>");
925 bool constraintExpr_similar (constraintExpr expr1, constraintExpr expr2)
927 constraintExprKind kind;
929 llassert (expr1 != NULL);
930 llassert (expr2 != NULL);
931 if (expr1->kind != expr2->kind)
939 return constraintTerm_similar (constraintExprData_termGetTerm(expr1->data),
940 constraintExprData_termGetTerm(expr2->data) );
941 /*@notreached@*/ break;
944 if (constraintExprData_unaryExprGetOp (expr1->data) != constraintExprData_unaryExprGetOp (expr2->data) )
947 return (constraintExpr_similar (
948 constraintExprData_unaryExprGetExpr (expr1->data),
949 constraintExprData_unaryExprGetExpr (expr2->data)
953 if (constraintExprData_binaryExprGetOp (expr1->data) != constraintExprData_binaryExprGetOp (expr2->data) )
956 if (! constraintExpr_similar (constraintExprData_binaryExprGetExpr1 (expr1->data),
957 constraintExprData_binaryExprGetExpr1 (expr2->data)) )
960 if (! constraintExpr_similar (constraintExprData_binaryExprGetExpr2 (expr1->data),
961 constraintExprData_binaryExprGetExpr2 (expr2->data)) )
976 bool constraintExpr_same (constraintExpr expr1, constraintExpr expr2)
978 constraintExprKind kind;
980 llassert (expr1 != NULL);
981 llassert (expr2 != NULL);
982 if (expr1->kind != expr2->kind)
990 return constraintTerm_similar (constraintExprData_termGetTerm(expr1->data),
991 constraintExprData_termGetTerm(expr2->data) );
992 /*@notreached@*/ break;
995 if (constraintExprData_unaryExprGetOp (expr1->data) != constraintExprData_unaryExprGetOp (expr2->data) )
998 return (constraintExpr_same (
999 constraintExprData_unaryExprGetExpr (expr1->data),
1000 constraintExprData_unaryExprGetExpr (expr2->data)
1005 if (constraintExprData_binaryExprGetOp (expr1->data) != constraintExprData_binaryExprGetOp (expr2->data) )
1008 if (! constraintExpr_same (constraintExprData_binaryExprGetExpr1 (expr1->data),
1009 constraintExprData_binaryExprGetExpr1 (expr2->data)) )
1012 if (! constraintExpr_same (constraintExprData_binaryExprGetExpr2 (expr1->data),
1013 constraintExprData_binaryExprGetExpr2 (expr2->data)) )
1017 /*@notreached@*/ break;
1028 bool constraintExpr_search (/*@observer@*/ constraintExpr c, /*@observer@*/ constraintExpr old)
1031 constraintExprKind kind;
1032 constraintExpr temp;
1034 if ( constraintExpr_similar (c, old) )
1036 DPRINTF((message ("Found %q",
1037 constraintExpr_unparse(old)
1049 temp = constraintExprData_unaryExprGetExpr (c->data);
1050 ret = ret || constraintExpr_search (temp, old);
1054 temp = constraintExprData_binaryExprGetExpr1 (c->data);
1055 ret = ret || constraintExpr_search(temp, old);
1057 temp = constraintExprData_binaryExprGetExpr2 (c->data);
1058 ret = ret || constraintExpr_search(temp, old);
1068 /*@only@*/ constraintExpr constraintExpr_searchandreplace (/*@only@*/ /*@unique@*/ constraintExpr c, /*@temp@*/ constraintExpr old, /*@temp@*/ constraintExpr newExpr )
1070 constraintExprKind kind;
1071 constraintExpr temp;
1074 if ( constraintExpr_similar (c, old) )
1077 ctype newType, cType;
1080 ret = constraintExpr_copy (newExpr);
1082 DPRINTF((message ("Replacing %s with %s",
1083 constraintExpr_unparse(old), constraintExpr_unparse(newExpr)
1086 if (constraintExpr_canGetCType(c) && constraintExpr_canGetCType(newExpr) )
1088 cType = constraintExpr_getCType(c);
1089 newType = constraintExpr_getCType(newExpr);
1091 if (ctype_match(cType,newType) )
1093 DPRINTF(( message("constraintExpr_searchandreplace: replacing "
1094 " %s with type %s with %s with type %s",
1095 constraintExpr_print(c), ctype_unparse(cType),
1096 constraintExpr_print(newExpr), ctype_unparse(newType)
1101 ret->origType = cType;
1105 if (constraintExpr_hasMaxSet(c) )
1107 if (constraintExpr_hasTypeChange(c))
1109 DPRINTF(( message("constraintExpr_searchandreplace: encountered "
1110 "MaxSet with changed type %s ",
1111 constraintExpr_print(c) )
1114 /*fix this with a conversation */
1115 ret = constraintExpr_adjustMaxSetForCast(ret, constraintExpr_getOrigType(c));
1118 constraintExpr_free(c);
1130 temp = constraintExprData_unaryExprGetExpr (c->data);
1131 temp = constraintExpr_copy(temp);
1132 temp = constraintExpr_searchandreplace (temp, old, newExpr);
1133 c->data = constraintExprData_unaryExprSetExpr (c->data, temp);
1137 temp = constraintExprData_binaryExprGetExpr1 (c->data);
1138 temp = constraintExpr_copy(temp);
1139 temp = constraintExpr_searchandreplace (temp, old, newExpr);
1140 c->data = constraintExprData_binaryExprSetExpr1 (c->data, temp);
1142 temp = constraintExprData_binaryExprGetExpr2 (c->data);
1143 temp = constraintExpr_copy(temp);
1144 temp = constraintExpr_searchandreplace (temp, old, newExpr);
1145 c->data = constraintExprData_binaryExprSetExpr2 (c->data, temp);
1153 static constraintExpr constraintExpr_simplifyChildren (/*@returned@*/ constraintExpr c)
1155 constraintExprKind kind;
1156 constraintExpr temp;
1165 temp = constraintExprData_unaryExprGetExpr (c->data);
1166 temp = constraintExpr_copy(temp);
1167 temp = constraintExpr_simplify (temp);
1168 c->data = constraintExprData_unaryExprSetExpr (c->data, temp);
1171 DPRINTF((message("constraintExpr_simplfiyChildren: simplify binary expression: %s",constraintExpr_unparse(c) ) ) );
1172 temp = constraintExprData_binaryExprGetExpr1 (c->data);
1173 temp = constraintExpr_copy(temp);
1174 temp = constraintExpr_simplify (temp);
1176 c->data = constraintExprData_binaryExprSetExpr1 (c->data, temp);
1178 temp = constraintExprData_binaryExprGetExpr2 (c->data);
1179 temp = constraintExpr_copy(temp);
1180 temp = constraintExpr_simplify (temp);
1182 c->data = constraintExprData_binaryExprSetExpr2 (c->data, temp);
1192 constraintExpr constraintExpr_setFileloc (/*@returned@*/ constraintExpr c, fileloc loc) /*@modifies c @*/
1195 constraintExpr temp;
1197 llassert(c != NULL);
1202 t = constraintExprData_termGetTerm (c->data);
1203 t = constraintTerm_copy(t);
1204 t = constraintTerm_setFileloc (t, loc);
1205 c->data = constraintExprData_termSetTerm (c->data, t);
1209 temp = constraintExprData_binaryExprGetExpr1 (c->data);
1210 temp = constraintExpr_copy(temp);
1211 temp = constraintExpr_setFileloc (temp, loc);
1212 c->data = constraintExprData_binaryExprSetExpr1 (c->data, temp);
1214 temp = constraintExprData_binaryExprGetExpr2 (c->data);
1215 temp = constraintExpr_copy(temp);
1216 temp = constraintExpr_setFileloc (temp, loc);
1217 c->data = constraintExprData_binaryExprSetExpr2 (c->data, temp);
1220 temp = constraintExprData_unaryExprGetExpr (c->data);
1221 temp = constraintExpr_copy(temp);
1222 temp = constraintExpr_setFileloc (temp, loc);
1223 c->data = constraintExprData_unaryExprSetExpr (c->data, temp);
1229 static /*@only@*/ constraintExpr constraintExpr_simplifybinaryExpr (/*@only@*/constraintExpr c)
1231 constraintExpr e1, e2;
1232 constraintExprBinaryOpKind op;
1234 e1 = constraintExprData_binaryExprGetExpr1 (c->data);
1235 e2 = constraintExprData_binaryExprGetExpr2 (c->data);
1237 if (constraintExpr_canGetValue (e1) && constraintExpr_canGetValue(e2) )
1241 i = constraintExpr_getValue(e1) + constraintExpr_getValue (e2);
1242 constraintExpr_free(c);
1243 c = constraintExpr_makeIntLiteral (i);
1247 op = constraintExprData_binaryExprGetOp (c->data);
1248 if (op == BINARYOP_MINUS)
1249 if (constraintExpr_similar(e1, e2) )
1251 constraintExpr_free(c);
1252 c = constraintExpr_makeIntLiteral (0);
1260 this thing takes the lexpr and expr of a constraint and modifies lexpr
1261 and returns a (possiblly new) value for expr
1263 /* 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 */
1265 /* the approach is a little Kludgy but seems to work. I should probably use something cleaner at some point ... */
1268 /*@only@*/ constraintExpr constraintExpr_solveBinaryExpr (constraintExpr lexpr, /*@only@*/ constraintExpr expr)
1270 constraintExpr expr1, expr2;
1271 constraintExprBinaryOpKind op;
1273 if (lexpr->kind != binaryexpr)
1276 expr2 = constraintExprData_binaryExprGetExpr2 (lexpr->data);
1277 expr1 = constraintExprData_binaryExprGetExpr1 (lexpr->data);
1279 op = constraintExprData_binaryExprGetOp (lexpr->data);
1281 expr1 = constraintExpr_copy(expr1);
1282 expr2 = constraintExpr_copy(expr2);
1284 /* drl possible problem : warning make sure this works */
1286 lexpr->kind = expr1->kind;
1287 sfree (lexpr->data);
1289 lexpr->data = copyExprData (expr1->data, expr1->kind);
1290 constraintExpr_free(expr1);
1292 if (op == BINARYOP_PLUS)
1293 expr = constraintExpr_makeSubtractExpr (expr, expr2);
1294 else if (op == BINARYOP_MINUS)
1295 expr = constraintExpr_makeAddExpr (expr, expr2);
1303 #warning this needs to be checked
1304 expr = constraintExpr_solveBinaryExpr (expr1, expr);
1306 expr = constraintExpr_solveBinaryExpr (expr2, expr);
1311 static /*@only@*/ constraintExpr constraintExpr_simplifyunaryExpr (/*@only@*/ constraintExpr c)
1315 llassert (c->kind == unaryExpr);
1317 DPRINTF ((message ("Doing constraintExpr_simplifyunaryExpr:%s", constraintExpr_unparse (c) ) ) );
1319 if ((constraintExprData_unaryExprGetOp (c->data) != MAXSET) &&
1320 (constraintExprData_unaryExprGetOp (c->data) != MAXREAD) )
1325 exp = constraintExprData_unaryExprGetExpr (c->data);
1326 exp = constraintExpr_copy(exp);
1328 if (exp->kind == term)
1330 constraintTerm cterm;
1332 cterm = constraintExprData_termGetTerm (exp->data);
1334 if (constraintTerm_isStringLiteral(cterm) )
1337 val = constraintTerm_getStringLiteral (cterm);
1338 if (constraintExprData_unaryExprGetOp (c->data) == MAXSET)
1340 constraintExpr temp;
1342 temp = constraintExpr_makeIntLiteral ((int)strlen (cstring_toCharsSafe(val) ) );
1344 constraintExpr_free(c);
1345 constraintExpr_free(exp);
1350 if (constraintExprData_unaryExprGetOp (c->data) == MAXREAD)
1352 constraintExpr temp;
1354 temp = constraintExpr_makeIntLiteral ((int)strlen (cstring_toCharsSafe(val) ) );
1356 constraintExpr_free(c);
1357 constraintExpr_free(exp);
1364 /* slight Kludge to hanlde var [] = { , , };
1365 ** type syntax I don't think this is sounds but it should be good
1366 ** enough. The C stanrad is very confusing about initialization
1370 if (constraintTerm_isInitBlock(cterm) )
1372 constraintExpr temp;
1375 len = constraintTerm_getInitBlockLength(cterm);
1377 temp = constraintExpr_makeIntLiteral (len );
1379 constraintExpr_free(c);
1380 DPRINTF(( message("Changed too %q", constraintExpr_print(temp)
1382 constraintExpr_free(exp);
1386 constraintExpr_free(exp);
1390 if (exp->kind != binaryexpr)
1392 constraintExpr_free(exp);
1396 if (constraintExprData_binaryExprGetOp (exp->data) == BINARYOP_PLUS )
1399 /* if (constraintExpr_canGetValue (constraintExprData_binaryExprGetExpr2 (exp->data) ) ) */
1402 constraintExpr temp, temp2;
1404 DPRINTF ((message ("Doing fancy simplification") ) );
1406 temp = constraintExprData_binaryExprGetExpr2 (exp->data);
1408 temp2 = constraintExprData_binaryExprGetExpr1 (exp->data);
1410 temp2 = constraintExpr_copy(temp2);
1411 c->data = constraintExprData_unaryExprSetExpr (c->data, temp2);
1414 temp = constraintExpr_copy (temp);
1416 c = constraintExpr_makeSubtractExpr (c, temp);
1418 DPRINTF ((message ("Done fancy simplification:%s", constraintExpr_unparse (c) ) ) );
1422 DPRINTF ((message ("constraintExpr_simplifyUnaryExpr: Done simplification:%s", constraintExpr_unparse (c) ) ) );
1424 constraintExpr_free(exp);
1429 /*@only@*/ constraintExpr constraintExpr_simplify (/*@only@*/ constraintExpr c)
1431 constraintExprKind kind;
1435 DPRINTF ((message ("Doing constraintExpr_simplify:%s", constraintExpr_unparse (c) ) ) );
1440 /* drl: I think this is an Splint bug */
1442 ret = constraintExpr_copy(c);
1444 constraintExpr_free(c);
1446 ret = constraintExpr_simplifyChildren (ret);
1448 ret = constraintExpr_combineConstants (ret);
1450 ret = constraintExpr_simplifyChildren (ret);
1458 t = constraintExprData_termGetTerm (ret->data);
1459 t = constraintTerm_copy(t);
1460 t = constraintTerm_simplify (t);
1461 ret->data = constraintExprData_termSetTerm (ret->data, t);
1464 ret = constraintExpr_simplifyunaryExpr (ret);
1467 ret = constraintExpr_simplifybinaryExpr (ret);
1473 DPRINTF ((message ("constraintExpr_simplify returning :%s", constraintExpr_unparse (ret) ) ) );
1479 cstring constraintExpr_unparse (/*@temp@*/ /*@observer@*/ constraintExpr ex) /*@*/
1482 constraintExprKind kind;
1484 llassert (ex != NULL);
1492 if (context_getFlag (FLG_PARENCONSTRAINT) )
1494 st = message ("(%q) ", constraintTerm_print (constraintExprData_termGetTerm (ex->data)));
1498 st = message ("%q", constraintTerm_print (constraintExprData_termGetTerm (ex->data)));
1502 st = message ("%q(%q)",
1503 constraintExprUnaryOpKind_print (constraintExprData_unaryExprGetOp (ex->data) ),
1504 constraintExpr_unparse (constraintExprData_unaryExprGetExpr (ex->data) )
1508 if (context_getFlag (FLG_PARENCONSTRAINT) )
1510 st = message ("(%q) %q (%q)",
1511 constraintExpr_unparse (constraintExprData_binaryExprGetExpr1 (ex->data) ),
1512 constraintExprBinaryOpKind_print (constraintExprData_binaryExprGetOp (ex->data)
1514 constraintExpr_unparse (constraintExprData_binaryExprGetExpr2 (ex->data) )
1519 st = message ("%q %q %q",
1520 constraintExpr_unparse (constraintExprData_binaryExprGetExpr1 (ex->data) ),
1521 constraintExprBinaryOpKind_print (constraintExprData_binaryExprGetOp (ex->data)
1523 constraintExpr_unparse (constraintExprData_binaryExprGetExpr2 (ex->data) )
1530 st = message ("error");
1534 DPRINTF((message ("constraintExpr_unparse: '%s'",st) ) );
1538 constraintExpr constraintExpr_doSRefFixBaseParam (/*@returned@*/ constraintExpr expr, exprNodeList arglist)
1540 constraintTerm Term;
1541 constraintExprKind kind;
1542 constraintExpr expr1, expr2;
1543 constraintExprData data;
1544 llassert (expr != NULL);
1553 Term = constraintExprData_termGetTerm(data);
1554 Term = constraintTerm_copy(Term);
1556 Term = constraintTerm_doSRefFixBaseParam (Term, arglist);
1557 data = constraintExprData_termSetTerm(data, Term);
1560 expr1 = constraintExprData_unaryExprGetExpr (data);
1561 expr1 = constraintExpr_copy(expr1);
1563 expr1 = constraintExpr_doSRefFixBaseParam (expr1, arglist);
1564 data = constraintExprData_unaryExprSetExpr (data, expr1);
1567 expr1 = constraintExprData_binaryExprGetExpr1 (data);
1568 expr2 = constraintExprData_binaryExprGetExpr2 (data);
1570 expr1 = constraintExpr_copy(expr1);
1571 expr2 = constraintExpr_copy(expr2);
1573 expr1 = constraintExpr_doSRefFixBaseParam (expr1, arglist);
1574 data = constraintExprData_binaryExprSetExpr1 (data, expr1);
1575 expr2 = constraintExpr_doSRefFixBaseParam (expr2, arglist);
1576 data = constraintExprData_binaryExprSetExpr2 (data, expr2);
1587 / *@only@* / constraintExpr constraintExpr_doSRefFixInvarConstraint (/ *@only@* / constraintExpr expr, sRef s, ctype ct)
1589 constraintExprKind kind;
1590 constraintExpr expr1, expr2;
1591 constraintExprData data;
1592 llassert (expr != NULL);
1601 expr = doSRefFixInvarConstraintTerm (expr, s, ct);
1604 expr1 = constraintExprData_unaryExprGetExpr (data);
1605 expr1 = constraintExpr_copy(expr1);
1606 expr1 = constraintExpr_doSRefFixInvarConstraint (expr1, s, ct);
1607 data = constraintExprData_unaryExprSetExpr (data, expr1);
1610 expr1 = constraintExprData_binaryExprGetExpr1 (data);
1611 expr2 = constraintExprData_binaryExprGetExpr2 (data);
1613 expr1 = constraintExpr_copy(expr1);
1614 expr2 = constraintExpr_copy(expr2);
1616 expr1 = constraintExpr_doSRefFixInvarConstraint (expr1, s, ct);
1617 data = constraintExprData_binaryExprSetExpr1 (data, expr1);
1618 expr2 = constraintExpr_doSRefFixInvarConstraint (expr2, s, ct);
1619 data = constraintExprData_binaryExprSetExpr2 (data, expr2);
1630 /*@only@*/ constraintExpr constraintExpr_doSRefFixConstraintParam (/*@only@*/ constraintExpr expr, exprNodeList arglist) /*@modifies expr@*/
1632 constraintExprKind kind;
1633 constraintExpr expr1, expr2;
1634 constraintExprData data;
1635 llassert (expr != NULL);
1644 expr = doSRefFixConstraintParamTerm (expr, arglist);
1647 expr1 = constraintExprData_unaryExprGetExpr (data);
1648 expr1 = constraintExpr_copy(expr1);
1649 expr1 = constraintExpr_doSRefFixConstraintParam (expr1, arglist);
1650 data = constraintExprData_unaryExprSetExpr (data, expr1);
1653 expr1 = constraintExprData_binaryExprGetExpr1 (data);
1654 expr2 = constraintExprData_binaryExprGetExpr2 (data);
1656 expr1 = constraintExpr_copy(expr1);
1657 expr2 = constraintExpr_copy(expr2);
1659 expr1 = constraintExpr_doSRefFixConstraintParam (expr1, arglist);
1660 data = constraintExprData_binaryExprSetExpr1 (data, expr1);
1661 expr2 = constraintExpr_doSRefFixConstraintParam (expr2, arglist);
1662 data = constraintExprData_binaryExprSetExpr2 (data, expr2);
1672 /*@only@*/ constraintExpr constraintExpr_doFixResult (/*@only@*/ constraintExpr expr, /*@observer@*/ exprNode fcnCall)
1674 constraintExprKind kind;
1675 constraintExpr expr1, expr2;
1676 constraintExprData data;
1677 llassert (expr != NULL);
1686 expr = doFixResultTerm (expr, fcnCall);
1689 expr1 = constraintExprData_unaryExprGetExpr (data);
1690 expr1 = constraintExpr_copy(expr1);
1692 expr1 = constraintExpr_doFixResult (expr1, fcnCall);
1693 data = constraintExprData_unaryExprSetExpr (data, expr1);
1696 expr1 = constraintExprData_binaryExprGetExpr1 (data);
1697 expr2 = constraintExprData_binaryExprGetExpr2 (data);
1699 expr1 = constraintExpr_copy(expr1);
1700 expr2 = constraintExpr_copy(expr2);
1702 expr1 = constraintExpr_doFixResult (expr1, fcnCall);
1703 data = constraintExprData_binaryExprSetExpr1 (data, expr1);
1704 expr2 = constraintExpr_doFixResult (expr2, fcnCall);
1705 data = constraintExprData_binaryExprSetExpr2 (data, expr2);
1715 cstring constraintExpr_print (constraintExpr expr) /*@*/
1717 return constraintExpr_unparse (expr);
1720 bool constraintExpr_hasMaxSet (constraintExpr expr) /*@*/
1724 t = constraintExpr_unparse(expr);
1726 if (cstring_containsLit(t, "maxSet") != NULL )
1740 /*returns 1 0 -1 like strcmp
1746 int constraintExpr_compare (constraintExpr expr1, constraintExpr expr2)
1748 long value1, value2;
1750 if (constraintExpr_similar (expr1, expr2) )
1755 value1 = constraintExpr_getValue(expr1);
1756 value2 = constraintExpr_getValue(expr2);
1758 if (value1 > value2)
1761 if (value1 == value2)
1768 long constraintExpr_getValue (constraintExpr expr)
1770 llassert (expr->kind == term);
1771 return (constraintTerm_getValue (constraintExprData_termGetTerm (expr->data)));
1774 bool constraintExpr_canGetValue (constraintExpr expr)
1779 return constraintTerm_canGetValue (constraintExprData_termGetTerm (expr->data) );
1788 fileloc constraintExpr_getFileloc (constraintExpr expr)
1792 constraintExprKind kind;
1799 t = constraintExprData_termGetTerm (expr->data);
1800 return (constraintTerm_getFileloc (t) );
1804 e = constraintExprData_unaryExprGetExpr (expr->data);
1805 return (constraintExpr_getFileloc (e) );
1809 e = constraintExprData_binaryExprGetExpr1 (expr->data);
1810 return (constraintExpr_getFileloc (e) );
1815 return (fileloc_undefined);
1818 /*drl moved from constriantTerm.c 5/20/001*/
1819 static /*@only@*/ constraintExpr
1820 doFixResultTerm (/*@only@*/ constraintExpr e, /*@exposed@*/ exprNode fcnCall)
1824 /*maybe this should move to cosntraintExpr.c -drl7x 5/18/01*/
1827 constraintExprData data = e->data;
1828 constraintExprKind kind = e->kind;
1832 llassert(kind == term);
1834 t = constraintExprData_termGetTerm (data);
1835 llassert (constraintTerm_isDefined(t) );
1838 switch (constraintTerm_getKind(t) )
1846 s = constraintTerm_getSRef(t);
1847 if (sRef_isResult (s))
1849 ret = constraintExpr_makeExprNode(fcnCall);
1850 constraintExpr_free(e);
1866 / *@only@* / static constraintExpr
1867 doSRefFixInvarConstraintTerm (/ *@only@* / constraintExpr e,
1872 constraintExprData data = e->data;
1874 constraintExprKind kind = e->kind;
1878 llassert(kind == term);
1880 t = constraintExprData_termGetTerm (data);
1881 llassert (constraintTerm_isDefined(t) );
1885 DPRINTF (("Fixing: %s", constraintExpr_print (e)));
1887 switch (constraintTerm_getKind(t))
1890 DPRINTF((message ("%q @ %q ", constraintTerm_print(t),
1891 fileloc_unparse (constraintTerm_getFileloc(t) ) ) ));
1894 DPRINTF((message (" %q ", constraintTerm_print (t)) ));
1898 / * evans 2001-07-24: constants should use the original term * /
1899 if (!constraintTerm_canGetValue (t))
1902 DPRINTF ((message("Doing sRef_fixInvarConstraint for %q ",
1903 constraintTerm_print (t) ) ));
1905 snew = fixSref (ct, s, constraintTerm_getSRef(t));
1907 ret = constraintExpr_makeTermsRef(snew);
1909 constraintExpr_free (e);
1911 DPRINTF (( message("After Doing sRef_fixConstraintParam constraintExpr is %q ",
1912 constraintExpr_print (ret) ) ));
1913 / *@-branchstate@* /
1914 } / *@=branchstate@* /
1926 /*drl moved from constriantTerm.c 5/20/001*/
1927 /*@only@*/ static constraintExpr
1928 doSRefFixConstraintParamTerm (/*@only@*/ constraintExpr e, /*@observer@*/ /*@temp@*/ exprNodeList arglist)
1932 constraintExprData data = e->data;
1934 constraintExprKind kind = e->kind;
1938 llassert(kind == term);
1940 t = constraintExprData_termGetTerm (data);
1941 llassert (constraintTerm_isDefined(t) );
1945 DPRINTF (("Fixing: %s", constraintExpr_print (e)));
1947 switch (constraintTerm_getKind(t))
1950 DPRINTF((message ("%q @ %q ", constraintTerm_print(t),
1951 fileloc_unparse (constraintTerm_getFileloc(t) ) ) ));
1954 DPRINTF((message (" %q ", constraintTerm_print (t)) ));
1958 /* evans 2001-07-24: constants should use the original term */
1959 if (!constraintTerm_canGetValue (t))
1961 DPRINTF ((message("Doing sRef_fixConstraintParam for %q ",
1962 constraintTerm_print (t) ) ));
1963 ret = sRef_fixConstraintParam (constraintTerm_getSRef(t), arglist);
1965 constraintExpr_free (e);
1967 DPRINTF (( message("After Doing sRef_fixConstraintParam constraintExpr is %q ",
1968 constraintExpr_print (ret) ) ));
1970 } /*@=branchstate@*/
1982 /* bool constraintExpr_includesTerm (constraintExpr expr, constraintTerm term) */
1984 /* if (constraintTerm_hasTerm (expr->term, term) ) */
1987 /* if ((expr->expr) != NULL) */
1989 /* return ( constraintExpr_includesTerm (expr->expr, term) ); */
1995 /*drl added 6/11/01 */
1996 bool constraintExpr_isBinaryExpr (/*@observer@*/ constraintExpr c)
1998 if (c->kind == binaryexpr)
2005 /*drl added 8/08/001 */
2006 bool constraintExpr_isTerm (/*@observer@*/ constraintExpr c) /*@*/
2008 if (c->kind == term)
2015 /*@observer@*/ /*@temp@*/ constraintTerm constraintExpr_getTerm ( /*@temp@*/ /*@observer@*/ constraintExpr c) /*@*/
2017 constraintTerm term;
2019 llassert(constraintExpr_isTerm(c) );
2021 term = constraintExprData_termGetTerm(c->data);
2026 static void binaryExpr_dump (/*@observer@*/ constraintExprData data, FILE *f)
2028 constraintExpr expr1;
2029 constraintExprBinaryOpKind binaryOp;
2030 constraintExpr expr2;
2033 binaryOp = constraintExprData_binaryExprGetOp (data);
2035 fprintf(f, "%d\n", (int) binaryOp);
2037 expr1 = constraintExprData_binaryExprGetExpr1 (data);
2038 expr2 = constraintExprData_binaryExprGetExpr2 (data);
2042 constraintExpr_dump(expr1, f);
2045 constraintExpr_dump(expr2, f);
2049 static constraintExpr binaryExpr_undump (FILE *f)
2051 constraintExpr expr1;
2052 constraintExprBinaryOpKind binaryOp;
2053 constraintExpr expr2;
2062 os = mstring_create (MAX_DUMP_LINE_LENGTH);
2064 str = fgets(os, MAX_DUMP_LINE_LENGTH, f);
2067 binaryOp = (constraintExprBinaryOpKind) reader_getInt(&str);
2069 str = fgets(os, MAX_DUMP_LINE_LENGTH, f);
2071 reader_checkChar (&str, 'e');
2072 reader_checkChar (&str, '1');
2074 expr1 = constraintExpr_undump (f);
2076 str = fgets(os, MAX_DUMP_LINE_LENGTH, f);
2078 reader_checkChar (&str, 'e');
2079 reader_checkChar (&str, '2');
2081 expr2 = constraintExpr_undump (f);
2083 ret = constraintExpr_makeBinaryOpConstraintExpr (expr1, expr2);
2084 ret->data = constraintExprData_binaryExprSetOp(ret->data, binaryOp);
2092 static void unaryExpr_dump (/*@observer@*/ constraintExprData data, FILE *f)
2095 constraintExpr expr;
2096 constraintExprUnaryOpKind unaryOp;
2098 unaryOp = constraintExprData_unaryExprGetOp (data);
2100 fprintf(f, "%d\n", (int) unaryOp);
2102 expr = constraintExprData_unaryExprGetExpr (data);
2104 constraintExpr_dump(expr, f);
2107 static constraintExpr unaryExpr_undump ( FILE *f)
2110 constraintExpr expr;
2111 constraintExprUnaryOpKind unaryOp;
2117 str = mstring_create (MAX_DUMP_LINE_LENGTH);
2119 str = fgets(os, MAX_DUMP_LINE_LENGTH, f);
2121 unaryOp = (constraintExprUnaryOpKind) reader_getInt(&str);
2123 expr = constraintExpr_undump (f);
2125 ret = constraintExpr_makeUnaryOp (expr, unaryOp);
2132 void constraintExpr_dump (/*@observer@*/ constraintExpr expr, FILE *f)
2134 constraintExprKind kind;
2140 fprintf(f,"%d\n", (int) kind);
2145 t = constraintExprData_termGetTerm (expr->data);
2146 constraintTerm_dump (t, f);
2149 unaryExpr_dump (expr->data, f);
2152 binaryExpr_dump (expr->data, f);
2157 /*@only@*/ constraintExpr constraintExpr_undump (FILE *f)
2159 constraintExprKind kind;
2166 s = mstring_create (MAX_DUMP_LINE_LENGTH);
2170 s = fgets(os, MAX_DUMP_LINE_LENGTH, f);
2172 kind = (constraintExprKind) reader_getInt(&s);
2179 t = constraintTerm_undump (f);
2180 ret = constraintExpr_makeTerm(t);
2183 ret = unaryExpr_undump (f);
2186 ret = binaryExpr_undump (f);
2194 int constraintExpr_getDepth (constraintExpr ex)
2198 constraintExprKind kind;
2200 llassert (ex != NULL);
2210 ret = constraintExpr_getDepth (constraintExprData_unaryExprGetExpr (ex->data) );
2216 ret = constraintExpr_getDepth (constraintExprData_binaryExprGetExpr1 (ex->data) );
2220 ret += constraintExpr_getDepth (constraintExprData_binaryExprGetExpr2 (ex->data) );
2231 bool constraintExpr_canGetCType (constraintExpr e) /*@*/
2233 if (e->kind == term)
2239 DPRINTF(( message("constraintExpr_canGetCType: can't get type for %s ",
2240 constraintExpr_print(e) ) ));
2245 ctype constraintExpr_getCType (constraintExpr e) /*@*/
2249 llassert(constraintExpr_canGetCType(e) );
2254 t = constraintExprData_termGetTerm (e->data);
2255 return (constraintTerm_getCType(t) );
2256 /* assume that a unary expression will be an int ... */
2258 return ctype_signedintegral;
2260 /* drl for just return type of first operand */
2263 constraintExpr_getCType
2264 (constraintExprData_binaryExprGetExpr1 (e->data) )
2272 /* drl add 10-5-001 */
2274 static bool constraintExpr_hasTypeChange(constraintExpr e)
2276 if (constraintExpr_isDefined((e)) && (e->ct == TRUE) )
2281 if (e->kind == unaryExpr)
2283 if (constraintExprData_unaryExprGetOp (e->data) == MAXSET)
2287 ce = constraintExprData_unaryExprGetExpr(e->data);
2289 return (constraintExpr_hasTypeChange(ce) );
2296 /* drl add 10-5-001 */
2298 static ctype constraintExpr_getOrigType (constraintExpr e)
2301 llassert(constraintExpr_hasTypeChange(e) );
2309 if (e->kind == unaryExpr)
2311 if (constraintExprData_unaryExprGetOp (e->data) == MAXSET)
2315 ce = constraintExprData_unaryExprGetExpr(e->data);
2317 return (constraintExpr_getOrigType(ce) );
2325 /*drl added these around 10/18/001*/
2327 static /*@only@*/ constraintExpr constraintExpr_div (/*@only@*/ constraintExpr e, /*@unused@*/ ctype ct)
2332 static /*@only@*/ constraintExpr constraintTerm_simpleDivTypeExprNode(/*@only@*/ constraintExpr e, ctype ct)
2335 exprNode t1, t2, expr;
2340 message("constraintTerm_simpleDivTypeExprNode e=%s, ct=%s",
2341 constraintExpr_print(e), ctype_unparse(ct)
2345 t = constraintExprData_termGetTerm(e->data);
2347 expr = constraintTerm_getExprNode(t);
2349 if (expr->kind == XPR_OP)
2353 t1 = exprData_getOpA (data);
2354 t2 = exprData_getOpB (data);
2355 tok = exprData_getOpTok (data);
2356 if (lltok_isMult(tok) )
2359 if ((t1->kind == XPR_SIZEOF) || (t1->kind == XPR_SIZEOFT) )
2363 if (t1->kind == XPR_SIZEOFT)
2365 ct2 = qtype_getType (exprData_getType (t1->edata));
2369 ct2 = qtype_getType (exprData_getType(exprData_getSingle (t1->edata)->edata ) );
2371 if (ctype_match (ctype_makePointer(ct2), ct) )
2373 /* this is a bit sloopy but ... */
2374 constraintExpr_free(e);
2375 return constraintExpr_makeExprNode(t2);
2380 else if ((t2->kind == XPR_SIZEOF) || (t2->kind == XPR_SIZEOFT) )
2384 if (t2->kind == XPR_SIZEOFT)
2386 ct2 = qtype_getType (exprData_getType (t2->edata));
2390 ct2 = qtype_getType (exprData_getType(exprData_getSingle (t2->edata)->edata ) );
2392 if (ctype_match (ctype_makePointer(ct2),ct) )
2394 /* sloopy way to do this... */ /*@i22*/
2395 constraintExpr_free(e);
2396 return constraintExpr_makeExprNode(t1);
2406 return (constraintExpr_div (e, ct) );
2409 static /*@only@*/ constraintExpr simpleDivType (/*@only@*/ constraintExpr e, ctype ct)
2412 DPRINTF(( (message("simpleDiv got %s ", constraintExpr_unparse(e) ) )
2422 t = constraintExprData_termGetTerm(e->data);
2425 if (constraintTerm_isExprNode (t) )
2427 return constraintTerm_simpleDivTypeExprNode(e, ct);
2429 /* search for * size of ct and remove */
2431 return constraintExpr_div (e, ct);
2436 constraintExpr temp;
2438 temp = constraintExprData_binaryExprGetExpr1 (e->data);
2439 temp = constraintExpr_copy(temp);
2440 temp = simpleDivType (temp, ct);
2442 e->data = constraintExprData_binaryExprSetExpr1 (e->data, temp);
2444 temp = constraintExprData_binaryExprGetExpr2 (e->data);
2445 temp = constraintExpr_copy(temp);
2446 temp = simpleDivType (temp, ct);
2447 e->data = constraintExprData_binaryExprSetExpr2 (e->data, temp);
2449 DPRINTF(( (message("simpleDiv binaryexpr returning %s ", constraintExpr_unparse(e) ) )
2455 return constraintExpr_div (e, ct);
2462 static /*@only@*/ constraintExpr constraintExpr_adjustMaxSetForCast(/*@only@*/ constraintExpr e, ctype ct)
2465 DPRINTF(( (message("constraintExpr_adjustMaxSetForCast got %s ", constraintExpr_unparse(e) ) )
2468 e = constraintExpr_makeIncConstraintExpr(e);
2470 e = constraintExpr_simplify(e);
2473 e = simpleDivType (e, ct);
2475 e = constraintExpr_makeDecConstraintExpr(e);
2477 e = constraintExpr_simplify(e);
2479 DPRINTF(( (message("constraintExpr_adjustMaxSetForCast returning %s ", constraintExpr_unparse(e) ) )