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;
430 llassert (e != NULL);
437 t = exprData_getSingle (data);
438 while (exprNode_isInParens (t) )
440 t = exprData_getUopNode (t->edata);
442 s = exprNode_getSref (t);
443 if (sRef_isFixedArray(s) )
447 size = (int) sRef_getArraySize(s);
448 ret = constraintExpr_makeIntLiteral (size);
450 else if ( exprNode_isStringLiteral (t) )
455 str = multiVal_forceString(exprNode_getValue(t) );
456 size = cstring_length (str) + 1;
457 ret = constraintExpr_makeIntLiteral (size);
461 DPRINTF ((message ("could not determine the size of %s", exprNode_unparse (e) ) ) );
462 ret = oldconstraintExpr_makeTermExprNode (e);
467 DPRINTF ((message ("Examining operation %s", exprNode_unparse (e) ) ) );
468 t1 = exprData_getOpA (data);
469 t2 = exprData_getOpB (data);
470 tok = exprData_getOpTok (data);
472 if (lltok_isPlus_Op (tok) || lltok_isMinus_Op (tok) )
474 ce1 = constraintExpr_makeExprNode (t1);
475 ce2 = constraintExpr_makeExprNode (t2);
476 ret = constraintExpr_parseMakeBinaryOp (ce1, tok, ce2);
481 /* uncomment this block to activate the cheesy heuristic
482 for handling sizeof expressions
487 We handle expressions containing sizeof with the rule
488 (sizeof type ) * Expr = Expr
490 This is the total wronge way to do this but...
491 it may be better than nothing
496 else if (lltok_isMult(tok) )
498 if ((t1->kind == XPR_SIZEOF) || (t1->kind == XPR_SIZEOFT) )
500 ret = constraintExpr_makeExprNode(t2);
502 else if ((t2->kind == XPR_SIZEOF) || (t2->kind == XPR_SIZEOFT) )
504 ret = constraintExpr_makeExprNode(t1);
508 ret = oldconstraintExpr_makeTermExprNode (e);
513 ret = oldconstraintExpr_makeTermExprNode (e);
517 t = exprData_getUopNode (data);
518 ret = constraintExpr_makeExprNode (t);
522 t = exprData_getUopNode (data);
523 tok = exprData_getUopTok (data);
524 if (lltok_isInc_Op (tok) )
527 temp = constraintExpr_makeExprNode(t);
528 ret = constraintExpr_makeIncConstraintExpr(temp);
530 else if (lltok_isDec_Op (tok) )
533 temp = constraintExpr_makeExprNode(t);
534 ret = constraintExpr_makeDecConstraintExpr(temp);
537 ret = oldconstraintExpr_makeTermExprNode (e);
541 t = exprData_getUopNode (data);
542 ret = constraintExpr_makeExprNode (t);
545 t = exprData_getCastNode (data);
546 ret = constraintExpr_makeExprNode (t);
549 t = exprData_getPairA(data);
550 ret = constraintExpr_makeExprNode(t);
551 /*@i3434*/ /* drl: I'm not sure if this is right. I'm adding a break to quiet Splint */
554 ret = oldconstraintExpr_makeTermExprNode (e);
560 /*@only@*/ constraintExpr constraintExpr_makeTermExprNode (/*@exposed@*/ exprNode e)
562 return oldconstraintExpr_makeTermExprNode(e);
565 static constraintExpr constraintExpr_makeTerm (/*@only@*/ constraintTerm t)
569 ret = constraintExpr_alloc();
571 ret->data = dmalloc (sizeof *(ret->data) );
572 ret->data->term = NULL;
573 ret->data = constraintExprData_termSetTerm (ret->data, t);
575 ret->origType = ctype_undefined;
580 constraintExpr constraintExpr_makeTermsRef (/*@temp@*/ sRef s)
584 ret = constraintExpr_alloc();
586 ret->data = dmalloc (sizeof *(ret->data) );
587 t = constraintTerm_makesRef (s);
588 ret->data = constraintExprData_termSetTerm (ret->data, t);
591 ret->origType = ctype_undefined;
596 /*@special@*/ static constraintExpr makeUnaryOpGeneric (void) /*@allocates result->data@*/ /*@defines result->kind@*/
599 ret = constraintExpr_alloc();
600 ret->kind = unaryExpr;
601 ret->data = dmalloc ( sizeof *(ret->data) );
602 ret->data->unaryOp.expr = constraintExpr_undefined;
606 /*@only@*/ static constraintExpr constraintExpr_makeUnaryOpConstraintExpr (/*@only@*/ constraintExpr cexpr)
609 ret = makeUnaryOpGeneric();
613 ret->data = constraintExprData_unaryExprSetExpr (ret->data, cexpr);
614 ret->data = constraintExprData_unaryExprSetOp (ret->data, UNARYOP_UNDEFINED);
623 /*@only@*/ static constraintExpr constraintExpr_makeUnaryOp (/*@only@*/ constraintExpr cexpr, constraintExprUnaryOpKind Op )
626 ret = makeUnaryOpGeneric();
628 ret->data = constraintExprData_unaryExprSetExpr (ret->data, cexpr);
629 ret->data = constraintExprData_unaryExprSetOp (ret->data, Op);
632 ret->origType = ctype_undefined;
638 static constraintExpr constraintExpr_makeMaxSetConstraintExpr (/*@only@*/ constraintExpr c)
641 ret = constraintExpr_makeUnaryOp (c, MAXSET);
646 static constraintExpr constraintExpr_makeUnaryOpExprNode (/*@exposed@*/ exprNode expr)
650 sub = constraintExpr_makeExprNode (expr);
651 ret = constraintExpr_makeUnaryOpConstraintExpr(sub);
659 static constraintExpr constraintExpr_makeSRefUnaryOp (/*@temp@*/ /*@observer@*/ sRef s, constraintExprUnaryOpKind op)
664 t = constraintExpr_makeTermsRef (s);
665 ret = constraintExpr_makeUnaryOpConstraintExpr (t);
666 ret->data = constraintExprData_unaryExprSetOp (ret->data, op);
672 constraintExpr constraintExpr_makeSRefMaxRead( sRef s)
674 return (constraintExpr_makeSRefUnaryOp (s, MAXREAD) );
678 constraintExpr constraintExpr_makeSRefMaxset ( sRef s)
680 return (constraintExpr_makeSRefUnaryOp (s, MAXSET) );
684 constraintExpr constraintExpr_parseMakeUnaryOp (lltok op, constraintExpr cexpr)
687 ret = constraintExpr_makeUnaryOpConstraintExpr ( cexpr);
689 switch (lltok_getTok (op))
692 ret->data = constraintExprData_unaryExprSetOp (ret->data, MAXSET);
695 ret->data = constraintExprData_unaryExprSetOp (ret->data, MAXREAD);
698 llfatalbug(message("Unhandled Operation in Constraint") );
704 constraintExpr constraintExpr_makeMaxSetExpr (/*@exposed@*/ exprNode expr)
707 ret = constraintExpr_makeExprNode (expr);
709 ret = constraintExpr_makeMaxSetConstraintExpr (ret);
711 llassert (ret != NULL);
716 constraintExpr constraintExpr_makeMaxReadExpr (exprNode expr)
719 ret = constraintExpr_makeUnaryOpExprNode(expr);
720 ret->data = constraintExprData_unaryExprSetOp (ret->data, MAXREAD);
726 /*@unused@*/ static constraintExpr constraintExpr_makeMinSetExpr (/*@exposed@*/ exprNode expr)
729 ret = constraintExpr_makeUnaryOpExprNode(expr);
730 ret->data = constraintExprData_unaryExprSetOp (ret->data, MINSET);
735 /*@unused@*/ static constraintExpr constraintExpr_makeMinReadExpr (/*@exposed@*/ exprNode expr)
738 ret = constraintExpr_makeUnaryOpExprNode(expr);
739 ret->data = constraintExprData_unaryExprSetOp (ret->data, MINREAD);
745 constraintExpr constraintExpr_makeValueExpr (/*@exposed@*/ exprNode expr)
748 ret = constraintExpr_makeExprNode (expr);
753 constraintExpr constraintExpr_makeIntLiteral (long i)
757 ret = constraintExpr_alloc();
759 ret->data = dmalloc (sizeof *(ret->data) );
760 t = constraintTerm_makeIntLiteral (i);
761 ret->data = constraintExprData_termSetTerm (ret->data, t);
764 ret->origType = ctype_undefined;
770 constraintExpr constraintExpr_makeValueInt (int i)
772 return constraintExpr_makeIntLiteral (i);
777 /*@special@*/ static constraintExpr constraintExpr_makeBinaryOp (void)
778 /*@allocates result->data @*/ /*@sets result->kind @*/
781 ret = constraintExpr_alloc();
782 ret->kind = binaryexpr;
783 ret->data = dmalloc ( sizeof *(ret->data) );
785 ret->data->binaryOp.expr1 = constraintExpr_undefined;
786 ret->data->binaryOp.expr2 = constraintExpr_undefined;
792 static /*@only@*/ constraintExpr constraintExpr_makeBinaryOpConstraintExpr (/*@only@*/constraintExpr expr1, /*@only@*/ constraintExpr expr2)
797 ret = constraintExpr_makeBinaryOp();
798 ret->data = constraintExprData_binaryExprSetExpr1 (ret->data, expr1);
799 ret->data = constraintExprData_binaryExprSetExpr2 (ret->data, expr2);
800 ret->data = constraintExprData_binaryExprSetOp (ret->data, BINARYOP_UNDEFINED);
803 ret->origType = ctype_undefined;
809 constraintExpr constraintExpr_parseMakeBinaryOp (/*@only@*/ constraintExpr expr1, lltok op,/*@only@*/ constraintExpr expr2)
812 ret = constraintExpr_makeBinaryOpConstraintExpr (expr1, expr2);
814 if (lltok_getTok (op) == TPLUS)
816 ret->data = constraintExprData_binaryExprSetOp(ret->data, BINARYOP_PLUS);
818 else if (lltok_getTok (op) == TMINUS)
820 ret->data = constraintExprData_binaryExprSetOp(ret->data, BINARYOP_MINUS);
832 /*@unused@*/ static constraintExpr constraintExpr_makeBinaryOpExprNode (/*@exposed@*/ exprNode expr1, /*@exposed@*/ exprNode expr2)
835 constraintExpr sub1, sub2;
836 sub1 = constraintExpr_makeTermExprNode (expr1);
837 sub2 = constraintExpr_makeTermExprNode (expr2);
838 ret = constraintExpr_makeBinaryOpConstraintExpr(sub1, sub2);
844 constraintExpr constraintExpr_makeBinaryOpConstraintExprIntLiteral (/*@only@*/ constraintExpr expr, int literal)
847 constraintExpr constExpr;
849 constExpr = constraintExpr_makeIntLiteral (literal);
850 ret = constraintExpr_makeBinaryOpConstraintExpr (expr, constExpr);
851 ret->data = constraintExprData_binaryExprSetOp(ret->data, BINARYOP_PLUS);
856 constraintExpr constraintExpr_makeDecConstraintExpr (/*@only@*/constraintExpr expr)
861 inc = constraintExpr_makeIntLiteral (1);
862 ret = constraintExpr_makeBinaryOpConstraintExpr (expr, inc);
863 ret->data = constraintExprData_binaryExprSetOp(ret->data, BINARYOP_MINUS);
868 /*@only@*/ constraintExpr constraintExpr_makeSubtractExpr (/*@only@*/ constraintExpr expr, /*@only@*/ constraintExpr addent)
872 DPRINTF ((message ("Making subtract expression") ) );
874 ret = constraintExpr_makeBinaryOpConstraintExpr (expr, addent);
875 ret->data = constraintExprData_binaryExprSetOp (ret->data, BINARYOP_MINUS);
880 constraintExpr constraintExpr_makeAddExpr (/*@only@*/
881 constraintExpr expr, /*@only@*/
882 constraintExpr addent)
886 DPRINTF ((message ("Doing addTerm simplification") ) );
888 ret = constraintExpr_makeBinaryOpConstraintExpr (expr, addent);
889 ret->data = constraintExprData_binaryExprSetOp (ret->data, BINARYOP_PLUS);
895 constraintExpr constraintExpr_makeIncConstraintExpr (/*@only@*/ constraintExpr expr)
900 inc = constraintExpr_makeIntLiteral (1);
901 ret = constraintExpr_makeBinaryOpConstraintExpr (expr, inc);
902 ret->data = constraintExprData_binaryExprSetOp(ret->data, BINARYOP_PLUS);
907 static cstring constraintExprUnaryOpKind_print (constraintExprUnaryOpKind op)
912 return message("maxSet");
914 return message("minSet");
916 return message("maxRead");
918 return message("minRead");
921 return message ("<(Unary OP OTHER>");
927 static cstring constraintExprBinaryOpKind_print (constraintExprBinaryOpKind op)
939 return message ("<binary OP Unknown>");
943 bool constraintExpr_similar (constraintExpr expr1, constraintExpr expr2)
945 constraintExprKind kind;
947 llassert (expr1 != NULL);
948 llassert (expr2 != NULL);
949 if (expr1->kind != expr2->kind)
957 return constraintTerm_similar (constraintExprData_termGetTerm(expr1->data),
958 constraintExprData_termGetTerm(expr2->data) );
959 /*@notreached@*/ break;
962 if (constraintExprData_unaryExprGetOp (expr1->data) != constraintExprData_unaryExprGetOp (expr2->data) )
965 return (constraintExpr_similar (
966 constraintExprData_unaryExprGetExpr (expr1->data),
967 constraintExprData_unaryExprGetExpr (expr2->data)
971 if (constraintExprData_binaryExprGetOp (expr1->data) != constraintExprData_binaryExprGetOp (expr2->data) )
974 if (! constraintExpr_similar (constraintExprData_binaryExprGetExpr1 (expr1->data),
975 constraintExprData_binaryExprGetExpr1 (expr2->data)) )
978 if (! constraintExpr_similar (constraintExprData_binaryExprGetExpr2 (expr1->data),
979 constraintExprData_binaryExprGetExpr2 (expr2->data)) )
994 bool constraintExpr_same (constraintExpr expr1, constraintExpr expr2)
996 constraintExprKind kind;
998 llassert (expr1 != NULL);
999 llassert (expr2 != NULL);
1000 if (expr1->kind != expr2->kind)
1008 return constraintTerm_similar (constraintExprData_termGetTerm(expr1->data),
1009 constraintExprData_termGetTerm(expr2->data) );
1010 /*@notreached@*/ break;
1013 if (constraintExprData_unaryExprGetOp (expr1->data) != constraintExprData_unaryExprGetOp (expr2->data) )
1016 return (constraintExpr_same (
1017 constraintExprData_unaryExprGetExpr (expr1->data),
1018 constraintExprData_unaryExprGetExpr (expr2->data)
1023 if (constraintExprData_binaryExprGetOp (expr1->data) != constraintExprData_binaryExprGetOp (expr2->data) )
1026 if (! constraintExpr_same (constraintExprData_binaryExprGetExpr1 (expr1->data),
1027 constraintExprData_binaryExprGetExpr1 (expr2->data)) )
1030 if (! constraintExpr_same (constraintExprData_binaryExprGetExpr2 (expr1->data),
1031 constraintExprData_binaryExprGetExpr2 (expr2->data)) )
1035 /*@notreached@*/ break;
1046 bool constraintExpr_search (/*@observer@*/ constraintExpr c, /*@observer@*/ constraintExpr old)
1049 constraintExprKind kind;
1050 constraintExpr temp;
1052 if ( constraintExpr_similar (c, old) )
1054 DPRINTF((message ("Found %q",
1055 constraintExpr_unparse(old)
1067 temp = constraintExprData_unaryExprGetExpr (c->data);
1068 ret = ret || constraintExpr_search (temp, old);
1072 temp = constraintExprData_binaryExprGetExpr1 (c->data);
1073 ret = ret || constraintExpr_search(temp, old);
1075 temp = constraintExprData_binaryExprGetExpr2 (c->data);
1076 ret = ret || constraintExpr_search(temp, old);
1086 /*@only@*/ constraintExpr constraintExpr_searchandreplace (/*@only@*/ /*@unique@*/ constraintExpr c, /*@temp@*/ constraintExpr old, /*@temp@*/ constraintExpr newExpr )
1088 constraintExprKind kind;
1089 constraintExpr temp;
1092 if ( constraintExpr_similar (c, old) )
1095 ctype newType, cType;
1098 ret = constraintExpr_copy (newExpr);
1100 DPRINTF((message ("Replacing %s with %s",
1101 constraintExpr_unparse(old), constraintExpr_unparse(newExpr)
1104 if (constraintExpr_canGetCType(c) && constraintExpr_canGetCType(newExpr) )
1106 cType = constraintExpr_getCType(c);
1107 newType = constraintExpr_getCType(newExpr);
1109 if (ctype_match(cType,newType) )
1111 DPRINTF(( message("constraintExpr_searchandreplace: replacing "
1112 " %s with type %s with %s with type %s",
1113 constraintExpr_print(c), ctype_unparse(cType),
1114 constraintExpr_print(newExpr), ctype_unparse(newType)
1119 ret->origType = cType;
1123 if (constraintExpr_hasMaxSet(c) )
1125 if (constraintExpr_hasTypeChange(c))
1127 DPRINTF(( message("constraintExpr_searchandreplace: encountered "
1128 "MaxSet with changed type %s ",
1129 constraintExpr_print(c) )
1132 /*fix this with a conversation */
1133 ret = constraintExpr_adjustMaxSetForCast(ret, constraintExpr_getOrigType(c));
1136 constraintExpr_free(c);
1148 temp = constraintExprData_unaryExprGetExpr (c->data);
1149 temp = constraintExpr_copy(temp);
1150 temp = constraintExpr_searchandreplace (temp, old, newExpr);
1151 c->data = constraintExprData_unaryExprSetExpr (c->data, temp);
1155 temp = constraintExprData_binaryExprGetExpr1 (c->data);
1156 temp = constraintExpr_copy(temp);
1157 temp = constraintExpr_searchandreplace (temp, old, newExpr);
1158 c->data = constraintExprData_binaryExprSetExpr1 (c->data, temp);
1160 temp = constraintExprData_binaryExprGetExpr2 (c->data);
1161 temp = constraintExpr_copy(temp);
1162 temp = constraintExpr_searchandreplace (temp, old, newExpr);
1163 c->data = constraintExprData_binaryExprSetExpr2 (c->data, temp);
1171 static constraintExpr constraintExpr_simplifyChildren (/*@returned@*/ constraintExpr c)
1173 constraintExprKind kind;
1174 constraintExpr temp;
1183 temp = constraintExprData_unaryExprGetExpr (c->data);
1184 temp = constraintExpr_copy(temp);
1185 temp = constraintExpr_simplify (temp);
1186 c->data = constraintExprData_unaryExprSetExpr (c->data, temp);
1189 DPRINTF((message("constraintExpr_simplfiyChildren: simplify binary expression: %s",constraintExpr_unparse(c) ) ) );
1190 temp = constraintExprData_binaryExprGetExpr1 (c->data);
1191 temp = constraintExpr_copy(temp);
1192 temp = constraintExpr_simplify (temp);
1194 c->data = constraintExprData_binaryExprSetExpr1 (c->data, temp);
1196 temp = constraintExprData_binaryExprGetExpr2 (c->data);
1197 temp = constraintExpr_copy(temp);
1198 temp = constraintExpr_simplify (temp);
1200 c->data = constraintExprData_binaryExprSetExpr2 (c->data, temp);
1210 constraintExpr constraintExpr_setFileloc (/*@returned@*/ constraintExpr c, fileloc loc) /*@modifies c @*/
1213 constraintExpr temp;
1215 llassert(c != NULL);
1220 t = constraintExprData_termGetTerm (c->data);
1221 t = constraintTerm_copy(t);
1222 t = constraintTerm_setFileloc (t, loc);
1223 c->data = constraintExprData_termSetTerm (c->data, t);
1227 temp = constraintExprData_binaryExprGetExpr1 (c->data);
1228 temp = constraintExpr_copy(temp);
1229 temp = constraintExpr_setFileloc (temp, loc);
1230 c->data = constraintExprData_binaryExprSetExpr1 (c->data, temp);
1232 temp = constraintExprData_binaryExprGetExpr2 (c->data);
1233 temp = constraintExpr_copy(temp);
1234 temp = constraintExpr_setFileloc (temp, loc);
1235 c->data = constraintExprData_binaryExprSetExpr2 (c->data, temp);
1238 temp = constraintExprData_unaryExprGetExpr (c->data);
1239 temp = constraintExpr_copy(temp);
1240 temp = constraintExpr_setFileloc (temp, loc);
1241 c->data = constraintExprData_unaryExprSetExpr (c->data, temp);
1247 static /*@only@*/ constraintExpr constraintExpr_simplifybinaryExpr (/*@only@*/constraintExpr c)
1249 constraintExpr e1, e2;
1250 constraintExprBinaryOpKind op;
1252 e1 = constraintExprData_binaryExprGetExpr1 (c->data);
1253 e2 = constraintExprData_binaryExprGetExpr2 (c->data);
1255 if (constraintExpr_canGetValue (e1) && constraintExpr_canGetValue(e2) )
1259 i = constraintExpr_getValue(e1) + constraintExpr_getValue (e2);
1260 constraintExpr_free(c);
1261 c = constraintExpr_makeIntLiteral (i);
1265 op = constraintExprData_binaryExprGetOp (c->data);
1266 if (op == BINARYOP_MINUS)
1267 if (constraintExpr_similar(e1, e2) )
1269 constraintExpr_free(c);
1270 c = constraintExpr_makeIntLiteral (0);
1278 this thing takes the lexpr and expr of a constraint and modifies lexpr
1279 and returns a (possiblly new) value for expr
1281 /* 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 */
1283 /* the approach is a little Kludgy but seems to work. I should probably use something cleaner at some point ... */
1286 /*@only@*/ constraintExpr constraintExpr_solveBinaryExpr (constraintExpr lexpr, /*@only@*/ constraintExpr expr)
1288 constraintExpr expr1, expr2;
1289 constraintExprBinaryOpKind op;
1291 if (lexpr->kind != binaryexpr)
1294 expr2 = constraintExprData_binaryExprGetExpr2 (lexpr->data);
1295 expr1 = constraintExprData_binaryExprGetExpr1 (lexpr->data);
1297 op = constraintExprData_binaryExprGetOp (lexpr->data);
1299 expr1 = constraintExpr_copy(expr1);
1300 expr2 = constraintExpr_copy(expr2);
1302 /* drl possible problem : warning make sure this works */
1304 lexpr->kind = expr1->kind;
1305 sfree (lexpr->data);
1307 lexpr->data = copyExprData (expr1->data, expr1->kind);
1308 constraintExpr_free(expr1);
1310 if (op == BINARYOP_PLUS)
1311 expr = constraintExpr_makeSubtractExpr (expr, expr2);
1312 else if (op == BINARYOP_MINUS)
1313 expr = constraintExpr_makeAddExpr (expr, expr2);
1321 #warning this needs to be checked
1322 expr = constraintExpr_solveBinaryExpr (expr1, expr);
1324 expr = constraintExpr_solveBinaryExpr (expr2, expr);
1329 static /*@only@*/ constraintExpr constraintExpr_simplifyunaryExpr (/*@only@*/ constraintExpr c)
1333 llassert (c->kind == unaryExpr);
1335 DPRINTF ((message ("Doing constraintExpr_simplifyunaryExpr:%s", constraintExpr_unparse (c) ) ) );
1337 if ((constraintExprData_unaryExprGetOp (c->data) != MAXSET) &&
1338 (constraintExprData_unaryExprGetOp (c->data) != MAXREAD) )
1343 exp = constraintExprData_unaryExprGetExpr (c->data);
1344 exp = constraintExpr_copy(exp);
1346 if (exp->kind == term)
1348 constraintTerm cterm;
1350 cterm = constraintExprData_termGetTerm (exp->data);
1352 if (constraintTerm_isStringLiteral(cterm) )
1355 val = constraintTerm_getStringLiteral (cterm);
1356 if (constraintExprData_unaryExprGetOp (c->data) == MAXSET)
1358 constraintExpr temp;
1360 temp = constraintExpr_makeIntLiteral ((int)strlen (cstring_toCharsSafe(val) ) );
1362 constraintExpr_free(c);
1363 constraintExpr_free(exp);
1368 if (constraintExprData_unaryExprGetOp (c->data) == MAXREAD)
1370 constraintExpr temp;
1372 temp = constraintExpr_makeIntLiteral ((int)strlen (cstring_toCharsSafe(val) ) );
1374 constraintExpr_free(c);
1375 constraintExpr_free(exp);
1382 /* slight Kludge to hanlde var [] = { , , };
1383 ** type syntax I don't think this is sounds but it should be good
1384 ** enough. The C stanrad is very confusing about initialization
1388 if (constraintTerm_isInitBlock(cterm) )
1390 constraintExpr temp;
1393 len = constraintTerm_getInitBlockLength(cterm);
1395 temp = constraintExpr_makeIntLiteral (len );
1397 constraintExpr_free(c);
1398 DPRINTF(( message("Changed too %q", constraintExpr_print(temp)
1400 constraintExpr_free(exp);
1404 constraintExpr_free(exp);
1408 if (exp->kind != binaryexpr)
1410 constraintExpr_free(exp);
1414 if (constraintExprData_binaryExprGetOp (exp->data) == BINARYOP_PLUS )
1417 /* if (constraintExpr_canGetValue (constraintExprData_binaryExprGetExpr2 (exp->data) ) ) */
1420 constraintExpr temp, temp2;
1422 DPRINTF ((message ("Doing fancy simplification") ) );
1424 temp = constraintExprData_binaryExprGetExpr2 (exp->data);
1426 temp2 = constraintExprData_binaryExprGetExpr1 (exp->data);
1428 temp2 = constraintExpr_copy(temp2);
1429 c->data = constraintExprData_unaryExprSetExpr (c->data, temp2);
1432 temp = constraintExpr_copy (temp);
1434 c = constraintExpr_makeSubtractExpr (c, temp);
1436 DPRINTF ((message ("Done fancy simplification:%s", constraintExpr_unparse (c) ) ) );
1440 DPRINTF ((message ("constraintExpr_simplifyUnaryExpr: Done simplification:%s", constraintExpr_unparse (c) ) ) );
1442 constraintExpr_free(exp);
1447 /*@only@*/ constraintExpr constraintExpr_simplify (/*@only@*/ constraintExpr c)
1449 constraintExprKind kind;
1453 DPRINTF ((message ("Doing constraintExpr_simplify:%s", constraintExpr_unparse (c) ) ) );
1458 /* drl: I think this is an Splint bug */
1460 ret = constraintExpr_copy(c);
1462 constraintExpr_free(c);
1464 ret = constraintExpr_simplifyChildren (ret);
1466 ret = constraintExpr_combineConstants (ret);
1468 ret = constraintExpr_simplifyChildren (ret);
1476 t = constraintExprData_termGetTerm (ret->data);
1477 t = constraintTerm_copy(t);
1478 t = constraintTerm_simplify (t);
1479 ret->data = constraintExprData_termSetTerm (ret->data, t);
1482 ret = constraintExpr_simplifyunaryExpr (ret);
1485 ret = constraintExpr_simplifybinaryExpr (ret);
1491 DPRINTF ((message ("constraintExpr_simplify returning :%s", constraintExpr_unparse (ret) ) ) );
1497 cstring constraintExpr_unparse (/*@temp@*/ /*@observer@*/ constraintExpr ex) /*@*/
1500 constraintExprKind kind;
1502 llassert (ex != NULL);
1510 if (context_getFlag (FLG_PARENCONSTRAINT) )
1512 st = message ("(%q) ", constraintTerm_print (constraintExprData_termGetTerm (ex->data)));
1516 st = message ("%q", constraintTerm_print (constraintExprData_termGetTerm (ex->data)));
1520 st = message ("%q(%q)",
1521 constraintExprUnaryOpKind_print (constraintExprData_unaryExprGetOp (ex->data) ),
1522 constraintExpr_unparse (constraintExprData_unaryExprGetExpr (ex->data) )
1526 if (context_getFlag (FLG_PARENCONSTRAINT) )
1528 st = message ("(%q) %q (%q)",
1529 constraintExpr_unparse (constraintExprData_binaryExprGetExpr1 (ex->data) ),
1530 constraintExprBinaryOpKind_print (constraintExprData_binaryExprGetOp (ex->data)
1532 constraintExpr_unparse (constraintExprData_binaryExprGetExpr2 (ex->data) )
1537 st = message ("%q %q %q",
1538 constraintExpr_unparse (constraintExprData_binaryExprGetExpr1 (ex->data) ),
1539 constraintExprBinaryOpKind_print (constraintExprData_binaryExprGetOp (ex->data)
1541 constraintExpr_unparse (constraintExprData_binaryExprGetExpr2 (ex->data) )
1548 st = message ("error");
1552 DPRINTF((message ("constraintExpr_unparse: '%s'",st) ) );
1556 constraintExpr constraintExpr_doSRefFixBaseParam (/*@returned@*/ constraintExpr expr, exprNodeList arglist)
1558 constraintTerm Term;
1559 constraintExprKind kind;
1560 constraintExpr expr1, expr2;
1561 constraintExprData data;
1562 llassert (expr != NULL);
1571 Term = constraintExprData_termGetTerm(data);
1572 Term = constraintTerm_copy(Term);
1574 Term = constraintTerm_doSRefFixBaseParam (Term, arglist);
1575 data = constraintExprData_termSetTerm(data, Term);
1578 expr1 = constraintExprData_unaryExprGetExpr (data);
1579 expr1 = constraintExpr_copy(expr1);
1581 expr1 = constraintExpr_doSRefFixBaseParam (expr1, arglist);
1582 data = constraintExprData_unaryExprSetExpr (data, expr1);
1585 expr1 = constraintExprData_binaryExprGetExpr1 (data);
1586 expr2 = constraintExprData_binaryExprGetExpr2 (data);
1588 expr1 = constraintExpr_copy(expr1);
1589 expr2 = constraintExpr_copy(expr2);
1591 expr1 = constraintExpr_doSRefFixBaseParam (expr1, arglist);
1592 data = constraintExprData_binaryExprSetExpr1 (data, expr1);
1593 expr2 = constraintExpr_doSRefFixBaseParam (expr2, arglist);
1594 data = constraintExprData_binaryExprSetExpr2 (data, expr2);
1605 / *@only@* / constraintExpr constraintExpr_doSRefFixInvarConstraint (/ *@only@* / constraintExpr expr, sRef s, ctype ct)
1607 constraintExprKind kind;
1608 constraintExpr expr1, expr2;
1609 constraintExprData data;
1610 llassert (expr != NULL);
1619 expr = doSRefFixInvarConstraintTerm (expr, s, ct);
1622 expr1 = constraintExprData_unaryExprGetExpr (data);
1623 expr1 = constraintExpr_copy(expr1);
1624 expr1 = constraintExpr_doSRefFixInvarConstraint (expr1, s, ct);
1625 data = constraintExprData_unaryExprSetExpr (data, expr1);
1628 expr1 = constraintExprData_binaryExprGetExpr1 (data);
1629 expr2 = constraintExprData_binaryExprGetExpr2 (data);
1631 expr1 = constraintExpr_copy(expr1);
1632 expr2 = constraintExpr_copy(expr2);
1634 expr1 = constraintExpr_doSRefFixInvarConstraint (expr1, s, ct);
1635 data = constraintExprData_binaryExprSetExpr1 (data, expr1);
1636 expr2 = constraintExpr_doSRefFixInvarConstraint (expr2, s, ct);
1637 data = constraintExprData_binaryExprSetExpr2 (data, expr2);
1648 /*@only@*/ constraintExpr constraintExpr_doSRefFixConstraintParam (/*@only@*/ constraintExpr expr, exprNodeList arglist) /*@modifies expr@*/
1650 constraintExprKind kind;
1651 constraintExpr expr1, expr2;
1652 constraintExprData data;
1653 llassert (expr != NULL);
1662 expr = doSRefFixConstraintParamTerm (expr, arglist);
1665 expr1 = constraintExprData_unaryExprGetExpr (data);
1666 expr1 = constraintExpr_copy(expr1);
1667 expr1 = constraintExpr_doSRefFixConstraintParam (expr1, arglist);
1668 data = constraintExprData_unaryExprSetExpr (data, expr1);
1671 expr1 = constraintExprData_binaryExprGetExpr1 (data);
1672 expr2 = constraintExprData_binaryExprGetExpr2 (data);
1674 expr1 = constraintExpr_copy(expr1);
1675 expr2 = constraintExpr_copy(expr2);
1677 expr1 = constraintExpr_doSRefFixConstraintParam (expr1, arglist);
1678 data = constraintExprData_binaryExprSetExpr1 (data, expr1);
1679 expr2 = constraintExpr_doSRefFixConstraintParam (expr2, arglist);
1680 data = constraintExprData_binaryExprSetExpr2 (data, expr2);
1690 /*@only@*/ constraintExpr constraintExpr_doFixResult (/*@only@*/ constraintExpr expr, /*@observer@*/ exprNode fcnCall)
1692 constraintExprKind kind;
1693 constraintExpr expr1, expr2;
1694 constraintExprData data;
1695 llassert (expr != NULL);
1704 expr = doFixResultTerm (expr, fcnCall);
1707 expr1 = constraintExprData_unaryExprGetExpr (data);
1708 expr1 = constraintExpr_copy(expr1);
1710 expr1 = constraintExpr_doFixResult (expr1, fcnCall);
1711 data = constraintExprData_unaryExprSetExpr (data, expr1);
1714 expr1 = constraintExprData_binaryExprGetExpr1 (data);
1715 expr2 = constraintExprData_binaryExprGetExpr2 (data);
1717 expr1 = constraintExpr_copy(expr1);
1718 expr2 = constraintExpr_copy(expr2);
1720 expr1 = constraintExpr_doFixResult (expr1, fcnCall);
1721 data = constraintExprData_binaryExprSetExpr1 (data, expr1);
1722 expr2 = constraintExpr_doFixResult (expr2, fcnCall);
1723 data = constraintExprData_binaryExprSetExpr2 (data, expr2);
1733 cstring constraintExpr_print (constraintExpr expr) /*@*/
1735 return constraintExpr_unparse (expr);
1738 bool constraintExpr_hasMaxSet (constraintExpr expr) /*@*/
1742 t = constraintExpr_unparse(expr);
1744 if (cstring_containsLit(t, "maxSet") != NULL )
1758 /*returns 1 0 -1 like strcmp
1764 int constraintExpr_compare (constraintExpr expr1, constraintExpr expr2)
1766 long value1, value2;
1768 if (constraintExpr_similar (expr1, expr2) )
1773 value1 = constraintExpr_getValue(expr1);
1774 value2 = constraintExpr_getValue(expr2);
1776 if (value1 > value2)
1779 if (value1 == value2)
1786 long constraintExpr_getValue (constraintExpr expr)
1788 llassert (expr->kind == term);
1789 return (constraintTerm_getValue (constraintExprData_termGetTerm (expr->data)));
1792 bool constraintExpr_canGetValue (constraintExpr expr)
1797 return constraintTerm_canGetValue (constraintExprData_termGetTerm (expr->data) );
1806 fileloc constraintExpr_getFileloc (constraintExpr expr)
1810 constraintExprKind kind;
1817 t = constraintExprData_termGetTerm (expr->data);
1818 return (constraintTerm_getFileloc (t) );
1822 e = constraintExprData_unaryExprGetExpr (expr->data);
1823 return (constraintExpr_getFileloc (e) );
1827 e = constraintExprData_binaryExprGetExpr1 (expr->data);
1828 return (constraintExpr_getFileloc (e) );
1833 return (fileloc_undefined);
1836 /*drl moved from constriantTerm.c 5/20/001*/
1837 static /*@only@*/ constraintExpr
1838 doFixResultTerm (/*@only@*/ constraintExpr e, /*@exposed@*/ exprNode fcnCall)
1842 /*maybe this should move to cosntraintExpr.c -drl7x 5/18/01*/
1845 constraintExprData data = e->data;
1846 constraintExprKind kind = e->kind;
1850 llassert(kind == term);
1852 t = constraintExprData_termGetTerm (data);
1853 llassert (constraintTerm_isDefined(t) );
1856 switch (constraintTerm_getKind(t) )
1864 s = constraintTerm_getSRef(t);
1865 if (sRef_isResult (s))
1867 ret = constraintExpr_makeExprNode(fcnCall);
1868 constraintExpr_free(e);
1884 / *@only@* / static constraintExpr
1885 doSRefFixInvarConstraintTerm (/ *@only@* / constraintExpr e,
1890 constraintExprData data = e->data;
1892 constraintExprKind kind = e->kind;
1896 llassert(kind == term);
1898 t = constraintExprData_termGetTerm (data);
1899 llassert (constraintTerm_isDefined(t) );
1903 DPRINTF (("Fixing: %s", constraintExpr_print (e)));
1905 switch (constraintTerm_getKind(t))
1908 DPRINTF((message ("%q @ %q ", constraintTerm_print(t),
1909 fileloc_unparse (constraintTerm_getFileloc(t) ) ) ));
1912 DPRINTF((message (" %q ", constraintTerm_print (t)) ));
1916 / * evans 2001-07-24: constants should use the original term * /
1917 if (!constraintTerm_canGetValue (t))
1920 DPRINTF ((message("Doing sRef_fixInvarConstraint for %q ",
1921 constraintTerm_print (t) ) ));
1923 snew = fixSref (ct, s, constraintTerm_getSRef(t));
1925 ret = constraintExpr_makeTermsRef(snew);
1927 constraintExpr_free (e);
1929 DPRINTF (( message("After Doing sRef_fixConstraintParam constraintExpr is %q ",
1930 constraintExpr_print (ret) ) ));
1931 / *@-branchstate@* /
1932 } / *@=branchstate@* /
1944 /*drl moved from constriantTerm.c 5/20/001*/
1945 /*@only@*/ static constraintExpr
1946 doSRefFixConstraintParamTerm (/*@only@*/ constraintExpr e, /*@observer@*/ /*@temp@*/ exprNodeList arglist)
1950 constraintExprData data = e->data;
1952 constraintExprKind kind = e->kind;
1956 llassert(kind == term);
1958 t = constraintExprData_termGetTerm (data);
1959 llassert (constraintTerm_isDefined(t) );
1963 DPRINTF (("Fixing: %s", constraintExpr_print (e)));
1965 switch (constraintTerm_getKind(t))
1968 DPRINTF((message ("%q @ %q ", constraintTerm_print(t),
1969 fileloc_unparse (constraintTerm_getFileloc(t) ) ) ));
1972 DPRINTF((message (" %q ", constraintTerm_print (t)) ));
1976 /* evans 2001-07-24: constants should use the original term */
1977 if (!constraintTerm_canGetValue (t))
1979 DPRINTF ((message("Doing sRef_fixConstraintParam for %q ",
1980 constraintTerm_print (t) ) ));
1981 ret = sRef_fixConstraintParam (constraintTerm_getSRef(t), arglist);
1983 constraintExpr_free (e);
1985 DPRINTF (( message("After Doing sRef_fixConstraintParam constraintExpr is %q ",
1986 constraintExpr_print (ret) ) ));
1988 } /*@=branchstate@*/
2000 /* bool constraintExpr_includesTerm (constraintExpr expr, constraintTerm term) */
2002 /* if (constraintTerm_hasTerm (expr->term, term) ) */
2005 /* if ((expr->expr) != NULL) */
2007 /* return ( constraintExpr_includesTerm (expr->expr, term) ); */
2013 /*drl added 6/11/01 */
2014 bool constraintExpr_isBinaryExpr (/*@observer@*/ constraintExpr c)
2016 if (c->kind == binaryexpr)
2023 /*drl added 8/08/001 */
2024 bool constraintExpr_isTerm (/*@observer@*/ constraintExpr c) /*@*/
2026 if (c->kind == term)
2033 /*@observer@*/ /*@temp@*/ constraintTerm constraintExpr_getTerm ( /*@temp@*/ /*@observer@*/ constraintExpr c) /*@*/
2035 constraintTerm term;
2037 llassert(constraintExpr_isTerm(c) );
2039 term = constraintExprData_termGetTerm(c->data);
2044 static void binaryExpr_dump (/*@observer@*/ constraintExprData data, FILE *f)
2046 constraintExpr expr1;
2047 constraintExprBinaryOpKind binaryOp;
2048 constraintExpr expr2;
2051 binaryOp = constraintExprData_binaryExprGetOp (data);
2053 fprintf(f, "%d\n", (int) binaryOp);
2055 expr1 = constraintExprData_binaryExprGetExpr1 (data);
2056 expr2 = constraintExprData_binaryExprGetExpr2 (data);
2060 constraintExpr_dump(expr1, f);
2063 constraintExpr_dump(expr2, f);
2067 static constraintExpr binaryExpr_undump (FILE *f)
2069 constraintExpr expr1;
2070 constraintExprBinaryOpKind binaryOp;
2071 constraintExpr expr2;
2080 os = mstring_create (MAX_DUMP_LINE_LENGTH);
2082 str = fgets(os, MAX_DUMP_LINE_LENGTH, f);
2085 binaryOp = (constraintExprBinaryOpKind) reader_getInt(&str);
2087 str = fgets(os, MAX_DUMP_LINE_LENGTH, f);
2089 reader_checkChar (&str, 'e');
2090 reader_checkChar (&str, '1');
2092 expr1 = constraintExpr_undump (f);
2094 str = fgets(os, MAX_DUMP_LINE_LENGTH, f);
2096 reader_checkChar (&str, 'e');
2097 reader_checkChar (&str, '2');
2099 expr2 = constraintExpr_undump (f);
2101 ret = constraintExpr_makeBinaryOpConstraintExpr (expr1, expr2);
2102 ret->data = constraintExprData_binaryExprSetOp(ret->data, binaryOp);
2110 static void unaryExpr_dump (/*@observer@*/ constraintExprData data, FILE *f)
2113 constraintExpr expr;
2114 constraintExprUnaryOpKind unaryOp;
2116 unaryOp = constraintExprData_unaryExprGetOp (data);
2118 fprintf(f, "%d\n", (int) unaryOp);
2120 expr = constraintExprData_unaryExprGetExpr (data);
2122 constraintExpr_dump(expr, f);
2125 static constraintExpr unaryExpr_undump ( FILE *f)
2128 constraintExpr expr;
2129 constraintExprUnaryOpKind unaryOp;
2135 str = mstring_create (MAX_DUMP_LINE_LENGTH);
2137 str = fgets(os, MAX_DUMP_LINE_LENGTH, f);
2139 unaryOp = (constraintExprUnaryOpKind) reader_getInt(&str);
2141 expr = constraintExpr_undump (f);
2143 ret = constraintExpr_makeUnaryOp (expr, unaryOp);
2150 void constraintExpr_dump (/*@observer@*/ constraintExpr expr, FILE *f)
2152 constraintExprKind kind;
2156 DPRINTF((message("constraintExpr_dump:: dumping constraintExpr %s",
2157 constraintExpr_unparse(expr)
2162 fprintf(f,"%d\n", (int) kind);
2167 t = constraintExprData_termGetTerm (expr->data);
2168 constraintTerm_dump (t, f);
2171 unaryExpr_dump (expr->data, f);
2174 binaryExpr_dump (expr->data, f);
2179 /*@only@*/ constraintExpr constraintExpr_undump (FILE *f)
2181 constraintExprKind kind;
2188 s = mstring_create (MAX_DUMP_LINE_LENGTH);
2192 s = fgets(os, MAX_DUMP_LINE_LENGTH, f);
2194 kind = (constraintExprKind) reader_getInt(&s);
2201 t = constraintTerm_undump (f);
2202 ret = constraintExpr_makeTerm(t);
2205 ret = unaryExpr_undump (f);
2208 ret = binaryExpr_undump (f);
2216 int constraintExpr_getDepth (constraintExpr ex)
2220 constraintExprKind kind;
2222 llassert (ex != NULL);
2232 ret = constraintExpr_getDepth (constraintExprData_unaryExprGetExpr (ex->data) );
2238 ret = constraintExpr_getDepth (constraintExprData_binaryExprGetExpr1 (ex->data) );
2242 ret += constraintExpr_getDepth (constraintExprData_binaryExprGetExpr2 (ex->data) );
2253 bool constraintExpr_canGetCType (constraintExpr e) /*@*/
2255 if (e->kind == term)
2261 DPRINTF(( message("constraintExpr_canGetCType: can't get type for %s ",
2262 constraintExpr_print(e) ) ));
2267 ctype constraintExpr_getCType (constraintExpr e) /*@*/
2271 llassert(constraintExpr_canGetCType(e) );
2276 t = constraintExprData_termGetTerm (e->data);
2277 return (constraintTerm_getCType(t) );
2278 /* assume that a unary expression will be an int ... */
2280 return ctype_signedintegral;
2282 /* drl for just return type of first operand */
2285 constraintExpr_getCType
2286 (constraintExprData_binaryExprGetExpr1 (e->data) )
2294 /* drl add 10-5-001 */
2296 static bool constraintExpr_hasTypeChange(constraintExpr e)
2298 if (constraintExpr_isDefined((e)) && (e->ct == TRUE) )
2303 if (e->kind == unaryExpr)
2305 if (constraintExprData_unaryExprGetOp (e->data) == MAXSET)
2309 ce = constraintExprData_unaryExprGetExpr(e->data);
2311 return (constraintExpr_hasTypeChange(ce) );
2318 /* drl add 10-5-001 */
2320 static ctype constraintExpr_getOrigType (constraintExpr e)
2323 llassert(constraintExpr_hasTypeChange(e) );
2331 if (e->kind == unaryExpr)
2333 if (constraintExprData_unaryExprGetOp (e->data) == MAXSET)
2337 ce = constraintExprData_unaryExprGetExpr(e->data);
2339 return (constraintExpr_getOrigType(ce) );
2347 /*drl added these around 10/18/001*/
2349 static /*@only@*/ constraintExpr constraintExpr_div (/*@only@*/ constraintExpr e, /*@unused@*/ ctype ct)
2354 static /*@only@*/ constraintExpr constraintTerm_simpleDivTypeExprNode(/*@only@*/ constraintExpr e, ctype ct)
2357 exprNode t1, t2, expr;
2362 message("constraintTerm_simpleDivTypeExprNode e=%s, ct=%s",
2363 constraintExpr_print(e), ctype_unparse(ct)
2367 t = constraintExprData_termGetTerm(e->data);
2369 expr = constraintTerm_getExprNode(t);
2371 if (expr->kind == XPR_OP)
2375 t1 = exprData_getOpA (data);
2376 t2 = exprData_getOpB (data);
2377 tok = exprData_getOpTok (data);
2378 if (lltok_isMult(tok) )
2381 if ((t1->kind == XPR_SIZEOF) || (t1->kind == XPR_SIZEOFT) )
2385 if (t1->kind == XPR_SIZEOFT)
2387 ct2 = qtype_getType (exprData_getType (t1->edata));
2391 ct2 = qtype_getType (exprData_getType(exprData_getSingle (t1->edata)->edata ) );
2393 if (ctype_match (ctype_makePointer(ct2), ct) )
2395 /* this is a bit sloopy but ... */
2396 constraintExpr_free(e);
2397 return constraintExpr_makeExprNode(t2);
2402 else if ((t2->kind == XPR_SIZEOF) || (t2->kind == XPR_SIZEOFT) )
2406 if (t2->kind == XPR_SIZEOFT)
2408 ct2 = qtype_getType (exprData_getType (t2->edata));
2412 ct2 = qtype_getType (exprData_getType(exprData_getSingle (t2->edata)->edata ) );
2414 if (ctype_match (ctype_makePointer(ct2),ct) )
2416 /* sloopy way to do this... */ /*@i22*/
2417 constraintExpr_free(e);
2418 return constraintExpr_makeExprNode(t1);
2428 return (constraintExpr_div (e, ct) );
2431 static /*@only@*/ constraintExpr simpleDivType (/*@only@*/ constraintExpr e, ctype ct)
2434 DPRINTF(( (message("simpleDiv got %s ", constraintExpr_unparse(e) ) )
2444 t = constraintExprData_termGetTerm(e->data);
2447 if (constraintTerm_isExprNode (t) )
2449 return constraintTerm_simpleDivTypeExprNode(e, ct);
2451 /* search for * size of ct and remove */
2453 return constraintExpr_div (e, ct);
2458 constraintExpr temp;
2460 temp = constraintExprData_binaryExprGetExpr1 (e->data);
2461 temp = constraintExpr_copy(temp);
2462 temp = simpleDivType (temp, ct);
2464 e->data = constraintExprData_binaryExprSetExpr1 (e->data, temp);
2466 temp = constraintExprData_binaryExprGetExpr2 (e->data);
2467 temp = constraintExpr_copy(temp);
2468 temp = simpleDivType (temp, ct);
2469 e->data = constraintExprData_binaryExprSetExpr2 (e->data, temp);
2471 DPRINTF(( (message("simpleDiv binaryexpr returning %s ", constraintExpr_unparse(e) ) )
2477 return constraintExpr_div (e, ct);
2484 static /*@only@*/ constraintExpr constraintExpr_adjustMaxSetForCast(/*@only@*/ constraintExpr e, ctype ct)
2487 DPRINTF(( (message("constraintExpr_adjustMaxSetForCast got %s ", constraintExpr_unparse(e) ) )
2490 e = constraintExpr_makeIncConstraintExpr(e);
2492 e = constraintExpr_simplify(e);
2495 e = simpleDivType (e, ct);
2497 e = constraintExpr_makeDecConstraintExpr(e);
2499 e = constraintExpr_simplify(e);
2501 DPRINTF(( (message("constraintExpr_adjustMaxSetForCast returning %s ", constraintExpr_unparse(e) ) )