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 s = exprNode_getSref (t);
439 if (sRef_isFixedArray(s) )
443 size = (int) sRef_getArraySize(s);
444 ret = constraintExpr_makeIntLiteral (size);
448 DPRINTF ((message ("could not determine the size of %s", exprNode_unparse (e) ) ) );
449 ret = oldconstraintExpr_makeTermExprNode (e);
454 DPRINTF ((message ("Examining operation %s", exprNode_unparse (e) ) ) );
455 t1 = exprData_getOpA (data);
456 t2 = exprData_getOpB (data);
457 tok = exprData_getOpTok (data);
459 if (lltok_isPlus_Op (tok) || lltok_isMinus_Op (tok) )
461 ce1 = constraintExpr_makeExprNode (t1);
462 ce2 = constraintExpr_makeExprNode (t2);
463 ret = constraintExpr_parseMakeBinaryOp (ce1, tok, ce2);
468 /* uncomment this block to activate the cheesy heuristic
469 for handling sizeof expressions
474 We handle expressions containing sizeof with the rule
475 (sizeof type ) * Expr = Expr
477 This is the total wronge way to do this but...
478 it may be better than nothing
483 else if (lltok_isMult(tok) )
485 if ((t1->kind == XPR_SIZEOF) || (t1->kind == XPR_SIZEOFT) )
487 ret = constraintExpr_makeExprNode(t2);
489 else if ((t2->kind == XPR_SIZEOF) || (t2->kind == XPR_SIZEOFT) )
491 ret = constraintExpr_makeExprNode(t1);
495 ret = oldconstraintExpr_makeTermExprNode (e);
500 ret = oldconstraintExpr_makeTermExprNode (e);
504 t = exprData_getUopNode (data);
505 ret = constraintExpr_makeExprNode (t);
509 t = exprData_getUopNode (data);
510 tok = exprData_getUopTok (data);
511 if (lltok_isInc_Op (tok) )
514 temp = constraintExpr_makeExprNode(t);
515 ret = constraintExpr_makeIncConstraintExpr(temp);
517 else if (lltok_isDec_Op (tok) )
520 temp = constraintExpr_makeExprNode(t);
521 ret = constraintExpr_makeDecConstraintExpr(temp);
524 ret = oldconstraintExpr_makeTermExprNode (e);
528 t = exprData_getUopNode (data);
529 ret = constraintExpr_makeExprNode (t);
532 t = exprData_getCastNode (data);
533 ret = constraintExpr_makeExprNode (t);
536 t = exprData_getPairA(data);
537 ret = constraintExpr_makeExprNode(t);
538 /*@i3434*/ /* drl: I'm not sure if this is right. I'm adding a break to quiet Splint */
541 ret = oldconstraintExpr_makeTermExprNode (e);
547 /*@only@*/ constraintExpr constraintExpr_makeTermExprNode (/*@exposed@*/ exprNode e)
549 return oldconstraintExpr_makeTermExprNode(e);
552 static constraintExpr constraintExpr_makeTerm (/*@only@*/ constraintTerm t)
556 ret = constraintExpr_alloc();
558 ret->data = dmalloc (sizeof *(ret->data) );
559 ret->data->term = NULL;
560 ret->data = constraintExprData_termSetTerm (ret->data, t);
562 ret->origType = ctype_undefined;
567 constraintExpr constraintExpr_makeTermsRef (/*@temp@*/ sRef s)
571 ret = constraintExpr_alloc();
573 ret->data = dmalloc (sizeof *(ret->data) );
574 t = constraintTerm_makesRef (s);
575 ret->data = constraintExprData_termSetTerm (ret->data, t);
578 ret->origType = ctype_undefined;
583 /*@special@*/ static constraintExpr makeUnaryOpGeneric (void) /*@allocates result->data@*/ /*@defines result->kind@*/
586 ret = constraintExpr_alloc();
587 ret->kind = unaryExpr;
588 ret->data = dmalloc ( sizeof *(ret->data) );
589 ret->data->unaryOp.expr = constraintExpr_undefined;
593 /*@only@*/ static constraintExpr constraintExpr_makeUnaryOpConstraintExpr (/*@only@*/ constraintExpr cexpr)
596 ret = makeUnaryOpGeneric();
600 ret->data = constraintExprData_unaryExprSetExpr (ret->data, cexpr);
601 ret->data = constraintExprData_unaryExprSetOp (ret->data, UNARYOP_UNDEFINED);
610 /*@only@*/ static constraintExpr constraintExpr_makeUnaryOp (/*@only@*/ constraintExpr cexpr, constraintExprUnaryOpKind Op )
613 ret = makeUnaryOpGeneric();
615 ret->data = constraintExprData_unaryExprSetExpr (ret->data, cexpr);
616 ret->data = constraintExprData_unaryExprSetOp (ret->data, Op);
619 ret->origType = ctype_undefined;
625 static constraintExpr constraintExpr_makeMaxSetConstraintExpr (/*@only@*/ constraintExpr c)
628 ret = constraintExpr_makeUnaryOp (c, MAXSET);
633 static constraintExpr constraintExpr_makeUnaryOpExprNode (/*@exposed@*/ exprNode expr)
637 sub = constraintExpr_makeExprNode (expr);
638 ret = constraintExpr_makeUnaryOpConstraintExpr(sub);
646 static constraintExpr constraintExpr_makeSRefUnaryOp (/*@temp@*/ /*@observer@*/ sRef s, constraintExprUnaryOpKind op)
651 t = constraintExpr_makeTermsRef (s);
652 ret = constraintExpr_makeUnaryOpConstraintExpr (t);
653 ret->data = constraintExprData_unaryExprSetOp (ret->data, op);
659 constraintExpr constraintExpr_makeSRefMaxRead( sRef s)
661 return (constraintExpr_makeSRefUnaryOp (s, MAXREAD) );
665 constraintExpr constraintExpr_makeSRefMaxset ( sRef s)
667 return (constraintExpr_makeSRefUnaryOp (s, MAXSET) );
671 constraintExpr constraintExpr_parseMakeUnaryOp (lltok op, constraintExpr cexpr)
674 ret = constraintExpr_makeUnaryOpConstraintExpr ( cexpr);
676 switch (lltok_getTok (op))
679 ret->data = constraintExprData_unaryExprSetOp (ret->data, MAXSET);
682 ret->data = constraintExprData_unaryExprSetOp (ret->data, MAXREAD);
685 llfatalbug(message("Unhandled Operation in Constraint") );
691 constraintExpr constraintExpr_makeMaxSetExpr (/*@exposed@*/ exprNode expr)
694 ret = constraintExpr_makeExprNode (expr);
696 ret = constraintExpr_makeMaxSetConstraintExpr (ret);
698 llassert (ret != NULL);
703 constraintExpr constraintExpr_makeMaxReadExpr (exprNode expr)
706 ret = constraintExpr_makeUnaryOpExprNode(expr);
707 ret->data = constraintExprData_unaryExprSetOp (ret->data, MAXREAD);
713 /*@unused@*/ static constraintExpr constraintExpr_makeMinSetExpr (/*@exposed@*/ exprNode expr)
716 ret = constraintExpr_makeUnaryOpExprNode(expr);
717 ret->data = constraintExprData_unaryExprSetOp (ret->data, MINSET);
722 /*@unused@*/ static constraintExpr constraintExpr_makeMinReadExpr (/*@exposed@*/ exprNode expr)
725 ret = constraintExpr_makeUnaryOpExprNode(expr);
726 ret->data = constraintExprData_unaryExprSetOp (ret->data, MINREAD);
732 constraintExpr constraintExpr_makeValueExpr (/*@exposed@*/ exprNode expr)
735 ret = constraintExpr_makeExprNode (expr);
740 constraintExpr constraintExpr_makeIntLiteral (long i)
744 ret = constraintExpr_alloc();
746 ret->data = dmalloc (sizeof *(ret->data) );
747 t = constraintTerm_makeIntLiteral (i);
748 ret->data = constraintExprData_termSetTerm (ret->data, t);
751 ret->origType = ctype_undefined;
757 constraintExpr constraintExpr_makeValueInt (int i)
759 return constraintExpr_makeIntLiteral (i);
764 /*@special@*/ static constraintExpr constraintExpr_makeBinaryOp (void)
765 /*@allocates result->data @*/ /*@sets result->kind @*/
768 ret = constraintExpr_alloc();
769 ret->kind = binaryexpr;
770 ret->data = dmalloc ( sizeof *(ret->data) );
772 ret->data->binaryOp.expr1 = constraintExpr_undefined;
773 ret->data->binaryOp.expr2 = constraintExpr_undefined;
779 static /*@only@*/ constraintExpr constraintExpr_makeBinaryOpConstraintExpr (/*@only@*/constraintExpr expr1, /*@only@*/ constraintExpr expr2)
784 ret = constraintExpr_makeBinaryOp();
785 ret->data = constraintExprData_binaryExprSetExpr1 (ret->data, expr1);
786 ret->data = constraintExprData_binaryExprSetExpr2 (ret->data, expr2);
787 ret->data = constraintExprData_binaryExprSetOp (ret->data, BINARYOP_UNDEFINED);
790 ret->origType = ctype_undefined;
796 constraintExpr constraintExpr_parseMakeBinaryOp (/*@only@*/ constraintExpr expr1, lltok op,/*@only@*/ constraintExpr expr2)
799 ret = constraintExpr_makeBinaryOpConstraintExpr (expr1, expr2);
801 if (lltok_getTok (op) == TPLUS)
803 ret->data = constraintExprData_binaryExprSetOp(ret->data, BINARYOP_PLUS);
805 else if (lltok_getTok (op) == TMINUS)
807 ret->data = constraintExprData_binaryExprSetOp(ret->data, BINARYOP_MINUS);
819 /*@unused@*/ static constraintExpr constraintExpr_makeBinaryOpExprNode (/*@exposed@*/ exprNode expr1, /*@exposed@*/ exprNode expr2)
822 constraintExpr sub1, sub2;
823 sub1 = constraintExpr_makeTermExprNode (expr1);
824 sub2 = constraintExpr_makeTermExprNode (expr2);
825 ret = constraintExpr_makeBinaryOpConstraintExpr(sub1, sub2);
831 constraintExpr constraintExpr_makeBinaryOpConstraintExprIntLiteral (/*@only@*/ constraintExpr expr, int literal)
834 constraintExpr constExpr;
836 constExpr = constraintExpr_makeIntLiteral (literal);
837 ret = constraintExpr_makeBinaryOpConstraintExpr (expr, constExpr);
838 ret->data = constraintExprData_binaryExprSetOp(ret->data, BINARYOP_PLUS);
843 constraintExpr constraintExpr_makeDecConstraintExpr (/*@only@*/constraintExpr expr)
848 inc = constraintExpr_makeIntLiteral (1);
849 ret = constraintExpr_makeBinaryOpConstraintExpr (expr, inc);
850 ret->data = constraintExprData_binaryExprSetOp(ret->data, BINARYOP_MINUS);
855 /*@only@*/ constraintExpr constraintExpr_makeSubtractExpr (/*@only@*/ constraintExpr expr, /*@only@*/ constraintExpr addent)
859 DPRINTF ((message ("Making subtract expression") ) );
861 ret = constraintExpr_makeBinaryOpConstraintExpr (expr, addent);
862 ret->data = constraintExprData_binaryExprSetOp (ret->data, BINARYOP_MINUS);
867 constraintExpr constraintExpr_makeAddExpr (/*@only@*/
868 constraintExpr expr, /*@only@*/
869 constraintExpr addent)
873 DPRINTF ((message ("Doing addTerm simplification") ) );
875 ret = constraintExpr_makeBinaryOpConstraintExpr (expr, addent);
876 ret->data = constraintExprData_binaryExprSetOp (ret->data, BINARYOP_PLUS);
882 constraintExpr constraintExpr_makeIncConstraintExpr (/*@only@*/ constraintExpr expr)
887 inc = constraintExpr_makeIntLiteral (1);
888 ret = constraintExpr_makeBinaryOpConstraintExpr (expr, inc);
889 ret->data = constraintExprData_binaryExprSetOp(ret->data, BINARYOP_PLUS);
894 static cstring constraintExprUnaryOpKind_print (constraintExprUnaryOpKind op)
899 return message("maxSet");
901 return message("minSet");
903 return message("maxRead");
905 return message("minRead");
908 return message ("<(Unary OP OTHER>");
914 static cstring constraintExprBinaryOpKind_print (constraintExprBinaryOpKind op)
926 return message ("<binary OP Unknown>");
930 bool constraintExpr_similar (constraintExpr expr1, constraintExpr expr2)
932 constraintExprKind kind;
934 llassert (expr1 != NULL);
935 llassert (expr2 != NULL);
936 if (expr1->kind != expr2->kind)
944 return constraintTerm_similar (constraintExprData_termGetTerm(expr1->data),
945 constraintExprData_termGetTerm(expr2->data) );
946 /*@notreached@*/ break;
949 if (constraintExprData_unaryExprGetOp (expr1->data) != constraintExprData_unaryExprGetOp (expr2->data) )
952 return (constraintExpr_similar (
953 constraintExprData_unaryExprGetExpr (expr1->data),
954 constraintExprData_unaryExprGetExpr (expr2->data)
958 if (constraintExprData_binaryExprGetOp (expr1->data) != constraintExprData_binaryExprGetOp (expr2->data) )
961 if (! constraintExpr_similar (constraintExprData_binaryExprGetExpr1 (expr1->data),
962 constraintExprData_binaryExprGetExpr1 (expr2->data)) )
965 if (! constraintExpr_similar (constraintExprData_binaryExprGetExpr2 (expr1->data),
966 constraintExprData_binaryExprGetExpr2 (expr2->data)) )
981 bool constraintExpr_same (constraintExpr expr1, constraintExpr expr2)
983 constraintExprKind kind;
985 llassert (expr1 != NULL);
986 llassert (expr2 != NULL);
987 if (expr1->kind != expr2->kind)
995 return constraintTerm_similar (constraintExprData_termGetTerm(expr1->data),
996 constraintExprData_termGetTerm(expr2->data) );
997 /*@notreached@*/ break;
1000 if (constraintExprData_unaryExprGetOp (expr1->data) != constraintExprData_unaryExprGetOp (expr2->data) )
1003 return (constraintExpr_same (
1004 constraintExprData_unaryExprGetExpr (expr1->data),
1005 constraintExprData_unaryExprGetExpr (expr2->data)
1010 if (constraintExprData_binaryExprGetOp (expr1->data) != constraintExprData_binaryExprGetOp (expr2->data) )
1013 if (! constraintExpr_same (constraintExprData_binaryExprGetExpr1 (expr1->data),
1014 constraintExprData_binaryExprGetExpr1 (expr2->data)) )
1017 if (! constraintExpr_same (constraintExprData_binaryExprGetExpr2 (expr1->data),
1018 constraintExprData_binaryExprGetExpr2 (expr2->data)) )
1022 /*@notreached@*/ break;
1033 bool constraintExpr_search (/*@observer@*/ constraintExpr c, /*@observer@*/ constraintExpr old)
1036 constraintExprKind kind;
1037 constraintExpr temp;
1039 if ( constraintExpr_similar (c, old) )
1041 DPRINTF((message ("Found %q",
1042 constraintExpr_unparse(old)
1054 temp = constraintExprData_unaryExprGetExpr (c->data);
1055 ret = ret || constraintExpr_search (temp, old);
1059 temp = constraintExprData_binaryExprGetExpr1 (c->data);
1060 ret = ret || constraintExpr_search(temp, old);
1062 temp = constraintExprData_binaryExprGetExpr2 (c->data);
1063 ret = ret || constraintExpr_search(temp, old);
1073 /*@only@*/ constraintExpr constraintExpr_searchandreplace (/*@only@*/ /*@unique@*/ constraintExpr c, /*@temp@*/ constraintExpr old, /*@temp@*/ constraintExpr newExpr )
1075 constraintExprKind kind;
1076 constraintExpr temp;
1079 if ( constraintExpr_similar (c, old) )
1082 ctype newType, cType;
1085 ret = constraintExpr_copy (newExpr);
1087 DPRINTF((message ("Replacing %s with %s",
1088 constraintExpr_unparse(old), constraintExpr_unparse(newExpr)
1091 if (constraintExpr_canGetCType(c) && constraintExpr_canGetCType(newExpr) )
1093 cType = constraintExpr_getCType(c);
1094 newType = constraintExpr_getCType(newExpr);
1096 if (ctype_match(cType,newType) )
1098 DPRINTF(( message("constraintExpr_searchandreplace: replacing "
1099 " %s with type %s with %s with type %s",
1100 constraintExpr_print(c), ctype_unparse(cType),
1101 constraintExpr_print(newExpr), ctype_unparse(newType)
1106 ret->origType = cType;
1110 if (constraintExpr_hasMaxSet(c) )
1112 if (constraintExpr_hasTypeChange(c))
1114 DPRINTF(( message("constraintExpr_searchandreplace: encountered "
1115 "MaxSet with changed type %s ",
1116 constraintExpr_print(c) )
1119 /*fix this with a conversation */
1120 ret = constraintExpr_adjustMaxSetForCast(ret, constraintExpr_getOrigType(c));
1123 constraintExpr_free(c);
1135 temp = constraintExprData_unaryExprGetExpr (c->data);
1136 temp = constraintExpr_copy(temp);
1137 temp = constraintExpr_searchandreplace (temp, old, newExpr);
1138 c->data = constraintExprData_unaryExprSetExpr (c->data, temp);
1142 temp = constraintExprData_binaryExprGetExpr1 (c->data);
1143 temp = constraintExpr_copy(temp);
1144 temp = constraintExpr_searchandreplace (temp, old, newExpr);
1145 c->data = constraintExprData_binaryExprSetExpr1 (c->data, temp);
1147 temp = constraintExprData_binaryExprGetExpr2 (c->data);
1148 temp = constraintExpr_copy(temp);
1149 temp = constraintExpr_searchandreplace (temp, old, newExpr);
1150 c->data = constraintExprData_binaryExprSetExpr2 (c->data, temp);
1158 static constraintExpr constraintExpr_simplifyChildren (/*@returned@*/ constraintExpr c)
1160 constraintExprKind kind;
1161 constraintExpr temp;
1170 temp = constraintExprData_unaryExprGetExpr (c->data);
1171 temp = constraintExpr_copy(temp);
1172 temp = constraintExpr_simplify (temp);
1173 c->data = constraintExprData_unaryExprSetExpr (c->data, temp);
1176 DPRINTF((message("constraintExpr_simplfiyChildren: simplify binary expression: %s",constraintExpr_unparse(c) ) ) );
1177 temp = constraintExprData_binaryExprGetExpr1 (c->data);
1178 temp = constraintExpr_copy(temp);
1179 temp = constraintExpr_simplify (temp);
1181 c->data = constraintExprData_binaryExprSetExpr1 (c->data, temp);
1183 temp = constraintExprData_binaryExprGetExpr2 (c->data);
1184 temp = constraintExpr_copy(temp);
1185 temp = constraintExpr_simplify (temp);
1187 c->data = constraintExprData_binaryExprSetExpr2 (c->data, temp);
1197 constraintExpr constraintExpr_setFileloc (/*@returned@*/ constraintExpr c, fileloc loc) /*@modifies c @*/
1200 constraintExpr temp;
1202 llassert(c != NULL);
1207 t = constraintExprData_termGetTerm (c->data);
1208 t = constraintTerm_copy(t);
1209 t = constraintTerm_setFileloc (t, loc);
1210 c->data = constraintExprData_termSetTerm (c->data, t);
1214 temp = constraintExprData_binaryExprGetExpr1 (c->data);
1215 temp = constraintExpr_copy(temp);
1216 temp = constraintExpr_setFileloc (temp, loc);
1217 c->data = constraintExprData_binaryExprSetExpr1 (c->data, temp);
1219 temp = constraintExprData_binaryExprGetExpr2 (c->data);
1220 temp = constraintExpr_copy(temp);
1221 temp = constraintExpr_setFileloc (temp, loc);
1222 c->data = constraintExprData_binaryExprSetExpr2 (c->data, temp);
1225 temp = constraintExprData_unaryExprGetExpr (c->data);
1226 temp = constraintExpr_copy(temp);
1227 temp = constraintExpr_setFileloc (temp, loc);
1228 c->data = constraintExprData_unaryExprSetExpr (c->data, temp);
1234 static /*@only@*/ constraintExpr constraintExpr_simplifybinaryExpr (/*@only@*/constraintExpr c)
1236 constraintExpr e1, e2;
1237 constraintExprBinaryOpKind op;
1239 e1 = constraintExprData_binaryExprGetExpr1 (c->data);
1240 e2 = constraintExprData_binaryExprGetExpr2 (c->data);
1242 if (constraintExpr_canGetValue (e1) && constraintExpr_canGetValue(e2) )
1246 i = constraintExpr_getValue(e1) + constraintExpr_getValue (e2);
1247 constraintExpr_free(c);
1248 c = constraintExpr_makeIntLiteral (i);
1252 op = constraintExprData_binaryExprGetOp (c->data);
1253 if (op == BINARYOP_MINUS)
1254 if (constraintExpr_similar(e1, e2) )
1256 constraintExpr_free(c);
1257 c = constraintExpr_makeIntLiteral (0);
1265 this thing takes the lexpr and expr of a constraint and modifies lexpr
1266 and returns a (possiblly new) value for expr
1268 /* 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 */
1270 /* the approach is a little Kludgy but seems to work. I should probably use something cleaner at some point ... */
1273 /*@only@*/ constraintExpr constraintExpr_solveBinaryExpr (constraintExpr lexpr, /*@only@*/ constraintExpr expr)
1275 constraintExpr expr1, expr2;
1276 constraintExprBinaryOpKind op;
1278 if (lexpr->kind != binaryexpr)
1281 expr2 = constraintExprData_binaryExprGetExpr2 (lexpr->data);
1282 expr1 = constraintExprData_binaryExprGetExpr1 (lexpr->data);
1284 op = constraintExprData_binaryExprGetOp (lexpr->data);
1286 expr1 = constraintExpr_copy(expr1);
1287 expr2 = constraintExpr_copy(expr2);
1289 /* drl possible problem : warning make sure this works */
1291 lexpr->kind = expr1->kind;
1292 sfree (lexpr->data);
1294 lexpr->data = copyExprData (expr1->data, expr1->kind);
1295 constraintExpr_free(expr1);
1297 if (op == BINARYOP_PLUS)
1298 expr = constraintExpr_makeSubtractExpr (expr, expr2);
1299 else if (op == BINARYOP_MINUS)
1300 expr = constraintExpr_makeAddExpr (expr, expr2);
1308 #warning this needs to be checked
1309 expr = constraintExpr_solveBinaryExpr (expr1, expr);
1311 expr = constraintExpr_solveBinaryExpr (expr2, expr);
1316 static /*@only@*/ constraintExpr constraintExpr_simplifyunaryExpr (/*@only@*/ constraintExpr c)
1320 llassert (c->kind == unaryExpr);
1322 DPRINTF ((message ("Doing constraintExpr_simplifyunaryExpr:%s", constraintExpr_unparse (c) ) ) );
1324 if ((constraintExprData_unaryExprGetOp (c->data) != MAXSET) &&
1325 (constraintExprData_unaryExprGetOp (c->data) != MAXREAD) )
1330 exp = constraintExprData_unaryExprGetExpr (c->data);
1331 exp = constraintExpr_copy(exp);
1333 if (exp->kind == term)
1335 constraintTerm cterm;
1337 cterm = constraintExprData_termGetTerm (exp->data);
1339 if (constraintTerm_isStringLiteral(cterm) )
1342 val = constraintTerm_getStringLiteral (cterm);
1343 if (constraintExprData_unaryExprGetOp (c->data) == MAXSET)
1345 constraintExpr temp;
1347 temp = constraintExpr_makeIntLiteral ((int)strlen (cstring_toCharsSafe(val) ) );
1349 constraintExpr_free(c);
1350 constraintExpr_free(exp);
1355 if (constraintExprData_unaryExprGetOp (c->data) == MAXREAD)
1357 constraintExpr temp;
1359 temp = constraintExpr_makeIntLiteral ((int)strlen (cstring_toCharsSafe(val) ) );
1361 constraintExpr_free(c);
1362 constraintExpr_free(exp);
1369 /* slight Kludge to hanlde var [] = { , , };
1370 ** type syntax I don't think this is sounds but it should be good
1371 ** enough. The C stanrad is very confusing about initialization
1375 if (constraintTerm_isInitBlock(cterm) )
1377 constraintExpr temp;
1380 len = constraintTerm_getInitBlockLength(cterm);
1382 temp = constraintExpr_makeIntLiteral (len );
1384 constraintExpr_free(c);
1385 DPRINTF(( message("Changed too %q", constraintExpr_print(temp)
1387 constraintExpr_free(exp);
1391 constraintExpr_free(exp);
1395 if (exp->kind != binaryexpr)
1397 constraintExpr_free(exp);
1401 if (constraintExprData_binaryExprGetOp (exp->data) == BINARYOP_PLUS )
1404 /* if (constraintExpr_canGetValue (constraintExprData_binaryExprGetExpr2 (exp->data) ) ) */
1407 constraintExpr temp, temp2;
1409 DPRINTF ((message ("Doing fancy simplification") ) );
1411 temp = constraintExprData_binaryExprGetExpr2 (exp->data);
1413 temp2 = constraintExprData_binaryExprGetExpr1 (exp->data);
1415 temp2 = constraintExpr_copy(temp2);
1416 c->data = constraintExprData_unaryExprSetExpr (c->data, temp2);
1419 temp = constraintExpr_copy (temp);
1421 c = constraintExpr_makeSubtractExpr (c, temp);
1423 DPRINTF ((message ("Done fancy simplification:%s", constraintExpr_unparse (c) ) ) );
1427 DPRINTF ((message ("constraintExpr_simplifyUnaryExpr: Done simplification:%s", constraintExpr_unparse (c) ) ) );
1429 constraintExpr_free(exp);
1434 /*@only@*/ constraintExpr constraintExpr_simplify (/*@only@*/ constraintExpr c)
1436 constraintExprKind kind;
1440 DPRINTF ((message ("Doing constraintExpr_simplify:%s", constraintExpr_unparse (c) ) ) );
1445 /* drl: I think this is an Splint bug */
1447 ret = constraintExpr_copy(c);
1449 constraintExpr_free(c);
1451 ret = constraintExpr_simplifyChildren (ret);
1453 ret = constraintExpr_combineConstants (ret);
1455 ret = constraintExpr_simplifyChildren (ret);
1463 t = constraintExprData_termGetTerm (ret->data);
1464 t = constraintTerm_copy(t);
1465 t = constraintTerm_simplify (t);
1466 ret->data = constraintExprData_termSetTerm (ret->data, t);
1469 ret = constraintExpr_simplifyunaryExpr (ret);
1472 ret = constraintExpr_simplifybinaryExpr (ret);
1478 DPRINTF ((message ("constraintExpr_simplify returning :%s", constraintExpr_unparse (ret) ) ) );
1484 cstring constraintExpr_unparse (/*@temp@*/ /*@observer@*/ constraintExpr ex) /*@*/
1487 constraintExprKind kind;
1489 llassert (ex != NULL);
1497 if (context_getFlag (FLG_PARENCONSTRAINT) )
1499 st = message ("(%q) ", constraintTerm_print (constraintExprData_termGetTerm (ex->data)));
1503 st = message ("%q", constraintTerm_print (constraintExprData_termGetTerm (ex->data)));
1507 st = message ("%q(%q)",
1508 constraintExprUnaryOpKind_print (constraintExprData_unaryExprGetOp (ex->data) ),
1509 constraintExpr_unparse (constraintExprData_unaryExprGetExpr (ex->data) )
1513 if (context_getFlag (FLG_PARENCONSTRAINT) )
1515 st = message ("(%q) %q (%q)",
1516 constraintExpr_unparse (constraintExprData_binaryExprGetExpr1 (ex->data) ),
1517 constraintExprBinaryOpKind_print (constraintExprData_binaryExprGetOp (ex->data)
1519 constraintExpr_unparse (constraintExprData_binaryExprGetExpr2 (ex->data) )
1524 st = message ("%q %q %q",
1525 constraintExpr_unparse (constraintExprData_binaryExprGetExpr1 (ex->data) ),
1526 constraintExprBinaryOpKind_print (constraintExprData_binaryExprGetOp (ex->data)
1528 constraintExpr_unparse (constraintExprData_binaryExprGetExpr2 (ex->data) )
1535 st = message ("error");
1539 DPRINTF((message ("constraintExpr_unparse: '%s'",st) ) );
1543 constraintExpr constraintExpr_doSRefFixBaseParam (/*@returned@*/ constraintExpr expr, exprNodeList arglist)
1545 constraintTerm Term;
1546 constraintExprKind kind;
1547 constraintExpr expr1, expr2;
1548 constraintExprData data;
1549 llassert (expr != NULL);
1558 Term = constraintExprData_termGetTerm(data);
1559 Term = constraintTerm_copy(Term);
1561 Term = constraintTerm_doSRefFixBaseParam (Term, arglist);
1562 data = constraintExprData_termSetTerm(data, Term);
1565 expr1 = constraintExprData_unaryExprGetExpr (data);
1566 expr1 = constraintExpr_copy(expr1);
1568 expr1 = constraintExpr_doSRefFixBaseParam (expr1, arglist);
1569 data = constraintExprData_unaryExprSetExpr (data, expr1);
1572 expr1 = constraintExprData_binaryExprGetExpr1 (data);
1573 expr2 = constraintExprData_binaryExprGetExpr2 (data);
1575 expr1 = constraintExpr_copy(expr1);
1576 expr2 = constraintExpr_copy(expr2);
1578 expr1 = constraintExpr_doSRefFixBaseParam (expr1, arglist);
1579 data = constraintExprData_binaryExprSetExpr1 (data, expr1);
1580 expr2 = constraintExpr_doSRefFixBaseParam (expr2, arglist);
1581 data = constraintExprData_binaryExprSetExpr2 (data, expr2);
1592 / *@only@* / constraintExpr constraintExpr_doSRefFixInvarConstraint (/ *@only@* / constraintExpr expr, sRef s, ctype ct)
1594 constraintExprKind kind;
1595 constraintExpr expr1, expr2;
1596 constraintExprData data;
1597 llassert (expr != NULL);
1606 expr = doSRefFixInvarConstraintTerm (expr, s, ct);
1609 expr1 = constraintExprData_unaryExprGetExpr (data);
1610 expr1 = constraintExpr_copy(expr1);
1611 expr1 = constraintExpr_doSRefFixInvarConstraint (expr1, s, ct);
1612 data = constraintExprData_unaryExprSetExpr (data, expr1);
1615 expr1 = constraintExprData_binaryExprGetExpr1 (data);
1616 expr2 = constraintExprData_binaryExprGetExpr2 (data);
1618 expr1 = constraintExpr_copy(expr1);
1619 expr2 = constraintExpr_copy(expr2);
1621 expr1 = constraintExpr_doSRefFixInvarConstraint (expr1, s, ct);
1622 data = constraintExprData_binaryExprSetExpr1 (data, expr1);
1623 expr2 = constraintExpr_doSRefFixInvarConstraint (expr2, s, ct);
1624 data = constraintExprData_binaryExprSetExpr2 (data, expr2);
1635 /*@only@*/ constraintExpr constraintExpr_doSRefFixConstraintParam (/*@only@*/ constraintExpr expr, exprNodeList arglist) /*@modifies expr@*/
1637 constraintExprKind kind;
1638 constraintExpr expr1, expr2;
1639 constraintExprData data;
1640 llassert (expr != NULL);
1649 expr = doSRefFixConstraintParamTerm (expr, arglist);
1652 expr1 = constraintExprData_unaryExprGetExpr (data);
1653 expr1 = constraintExpr_copy(expr1);
1654 expr1 = constraintExpr_doSRefFixConstraintParam (expr1, arglist);
1655 data = constraintExprData_unaryExprSetExpr (data, expr1);
1658 expr1 = constraintExprData_binaryExprGetExpr1 (data);
1659 expr2 = constraintExprData_binaryExprGetExpr2 (data);
1661 expr1 = constraintExpr_copy(expr1);
1662 expr2 = constraintExpr_copy(expr2);
1664 expr1 = constraintExpr_doSRefFixConstraintParam (expr1, arglist);
1665 data = constraintExprData_binaryExprSetExpr1 (data, expr1);
1666 expr2 = constraintExpr_doSRefFixConstraintParam (expr2, arglist);
1667 data = constraintExprData_binaryExprSetExpr2 (data, expr2);
1677 /*@only@*/ constraintExpr constraintExpr_doFixResult (/*@only@*/ constraintExpr expr, /*@observer@*/ exprNode fcnCall)
1679 constraintExprKind kind;
1680 constraintExpr expr1, expr2;
1681 constraintExprData data;
1682 llassert (expr != NULL);
1691 expr = doFixResultTerm (expr, fcnCall);
1694 expr1 = constraintExprData_unaryExprGetExpr (data);
1695 expr1 = constraintExpr_copy(expr1);
1697 expr1 = constraintExpr_doFixResult (expr1, fcnCall);
1698 data = constraintExprData_unaryExprSetExpr (data, expr1);
1701 expr1 = constraintExprData_binaryExprGetExpr1 (data);
1702 expr2 = constraintExprData_binaryExprGetExpr2 (data);
1704 expr1 = constraintExpr_copy(expr1);
1705 expr2 = constraintExpr_copy(expr2);
1707 expr1 = constraintExpr_doFixResult (expr1, fcnCall);
1708 data = constraintExprData_binaryExprSetExpr1 (data, expr1);
1709 expr2 = constraintExpr_doFixResult (expr2, fcnCall);
1710 data = constraintExprData_binaryExprSetExpr2 (data, expr2);
1720 cstring constraintExpr_print (constraintExpr expr) /*@*/
1722 return constraintExpr_unparse (expr);
1725 bool constraintExpr_hasMaxSet (constraintExpr expr) /*@*/
1729 t = constraintExpr_unparse(expr);
1731 if (cstring_containsLit(t, "maxSet") != NULL )
1745 /*returns 1 0 -1 like strcmp
1751 int constraintExpr_compare (constraintExpr expr1, constraintExpr expr2)
1753 long value1, value2;
1755 if (constraintExpr_similar (expr1, expr2) )
1760 value1 = constraintExpr_getValue(expr1);
1761 value2 = constraintExpr_getValue(expr2);
1763 if (value1 > value2)
1766 if (value1 == value2)
1773 long constraintExpr_getValue (constraintExpr expr)
1775 llassert (expr->kind == term);
1776 return (constraintTerm_getValue (constraintExprData_termGetTerm (expr->data)));
1779 bool constraintExpr_canGetValue (constraintExpr expr)
1784 return constraintTerm_canGetValue (constraintExprData_termGetTerm (expr->data) );
1793 fileloc constraintExpr_getFileloc (constraintExpr expr)
1797 constraintExprKind kind;
1804 t = constraintExprData_termGetTerm (expr->data);
1805 return (constraintTerm_getFileloc (t) );
1809 e = constraintExprData_unaryExprGetExpr (expr->data);
1810 return (constraintExpr_getFileloc (e) );
1814 e = constraintExprData_binaryExprGetExpr1 (expr->data);
1815 return (constraintExpr_getFileloc (e) );
1820 return (fileloc_undefined);
1823 /*drl moved from constriantTerm.c 5/20/001*/
1824 static /*@only@*/ constraintExpr
1825 doFixResultTerm (/*@only@*/ constraintExpr e, /*@exposed@*/ exprNode fcnCall)
1829 /*maybe this should move to cosntraintExpr.c -drl7x 5/18/01*/
1832 constraintExprData data = e->data;
1833 constraintExprKind kind = e->kind;
1837 llassert(kind == term);
1839 t = constraintExprData_termGetTerm (data);
1840 llassert (constraintTerm_isDefined(t) );
1843 switch (constraintTerm_getKind(t) )
1851 s = constraintTerm_getSRef(t);
1852 if (sRef_isResult (s))
1854 ret = constraintExpr_makeExprNode(fcnCall);
1855 constraintExpr_free(e);
1871 / *@only@* / static constraintExpr
1872 doSRefFixInvarConstraintTerm (/ *@only@* / constraintExpr e,
1877 constraintExprData data = e->data;
1879 constraintExprKind kind = e->kind;
1883 llassert(kind == term);
1885 t = constraintExprData_termGetTerm (data);
1886 llassert (constraintTerm_isDefined(t) );
1890 DPRINTF (("Fixing: %s", constraintExpr_print (e)));
1892 switch (constraintTerm_getKind(t))
1895 DPRINTF((message ("%q @ %q ", constraintTerm_print(t),
1896 fileloc_unparse (constraintTerm_getFileloc(t) ) ) ));
1899 DPRINTF((message (" %q ", constraintTerm_print (t)) ));
1903 / * evans 2001-07-24: constants should use the original term * /
1904 if (!constraintTerm_canGetValue (t))
1907 DPRINTF ((message("Doing sRef_fixInvarConstraint for %q ",
1908 constraintTerm_print (t) ) ));
1910 snew = fixSref (ct, s, constraintTerm_getSRef(t));
1912 ret = constraintExpr_makeTermsRef(snew);
1914 constraintExpr_free (e);
1916 DPRINTF (( message("After Doing sRef_fixConstraintParam constraintExpr is %q ",
1917 constraintExpr_print (ret) ) ));
1918 / *@-branchstate@* /
1919 } / *@=branchstate@* /
1931 /*drl moved from constriantTerm.c 5/20/001*/
1932 /*@only@*/ static constraintExpr
1933 doSRefFixConstraintParamTerm (/*@only@*/ constraintExpr e, /*@observer@*/ /*@temp@*/ exprNodeList arglist)
1937 constraintExprData data = e->data;
1939 constraintExprKind kind = e->kind;
1943 llassert(kind == term);
1945 t = constraintExprData_termGetTerm (data);
1946 llassert (constraintTerm_isDefined(t) );
1950 DPRINTF (("Fixing: %s", constraintExpr_print (e)));
1952 switch (constraintTerm_getKind(t))
1955 DPRINTF((message ("%q @ %q ", constraintTerm_print(t),
1956 fileloc_unparse (constraintTerm_getFileloc(t) ) ) ));
1959 DPRINTF((message (" %q ", constraintTerm_print (t)) ));
1963 /* evans 2001-07-24: constants should use the original term */
1964 if (!constraintTerm_canGetValue (t))
1966 DPRINTF ((message("Doing sRef_fixConstraintParam for %q ",
1967 constraintTerm_print (t) ) ));
1968 ret = sRef_fixConstraintParam (constraintTerm_getSRef(t), arglist);
1970 constraintExpr_free (e);
1972 DPRINTF (( message("After Doing sRef_fixConstraintParam constraintExpr is %q ",
1973 constraintExpr_print (ret) ) ));
1975 } /*@=branchstate@*/
1987 /* bool constraintExpr_includesTerm (constraintExpr expr, constraintTerm term) */
1989 /* if (constraintTerm_hasTerm (expr->term, term) ) */
1992 /* if ((expr->expr) != NULL) */
1994 /* return ( constraintExpr_includesTerm (expr->expr, term) ); */
2000 /*drl added 6/11/01 */
2001 bool constraintExpr_isBinaryExpr (/*@observer@*/ constraintExpr c)
2003 if (c->kind == binaryexpr)
2010 /*drl added 8/08/001 */
2011 bool constraintExpr_isTerm (/*@observer@*/ constraintExpr c) /*@*/
2013 if (c->kind == term)
2020 /*@observer@*/ /*@temp@*/ constraintTerm constraintExpr_getTerm ( /*@temp@*/ /*@observer@*/ constraintExpr c) /*@*/
2022 constraintTerm term;
2024 llassert(constraintExpr_isTerm(c) );
2026 term = constraintExprData_termGetTerm(c->data);
2031 static void binaryExpr_dump (/*@observer@*/ constraintExprData data, FILE *f)
2033 constraintExpr expr1;
2034 constraintExprBinaryOpKind binaryOp;
2035 constraintExpr expr2;
2038 binaryOp = constraintExprData_binaryExprGetOp (data);
2040 fprintf(f, "%d\n", (int) binaryOp);
2042 expr1 = constraintExprData_binaryExprGetExpr1 (data);
2043 expr2 = constraintExprData_binaryExprGetExpr2 (data);
2047 constraintExpr_dump(expr1, f);
2050 constraintExpr_dump(expr2, f);
2054 static constraintExpr binaryExpr_undump (FILE *f)
2056 constraintExpr expr1;
2057 constraintExprBinaryOpKind binaryOp;
2058 constraintExpr expr2;
2067 os = mstring_create (MAX_DUMP_LINE_LENGTH);
2069 str = fgets(os, MAX_DUMP_LINE_LENGTH, f);
2072 binaryOp = (constraintExprBinaryOpKind) reader_getInt(&str);
2074 str = fgets(os, MAX_DUMP_LINE_LENGTH, f);
2076 reader_checkChar (&str, 'e');
2077 reader_checkChar (&str, '1');
2079 expr1 = constraintExpr_undump (f);
2081 str = fgets(os, MAX_DUMP_LINE_LENGTH, f);
2083 reader_checkChar (&str, 'e');
2084 reader_checkChar (&str, '2');
2086 expr2 = constraintExpr_undump (f);
2088 ret = constraintExpr_makeBinaryOpConstraintExpr (expr1, expr2);
2089 ret->data = constraintExprData_binaryExprSetOp(ret->data, binaryOp);
2097 static void unaryExpr_dump (/*@observer@*/ constraintExprData data, FILE *f)
2100 constraintExpr expr;
2101 constraintExprUnaryOpKind unaryOp;
2103 unaryOp = constraintExprData_unaryExprGetOp (data);
2105 fprintf(f, "%d\n", (int) unaryOp);
2107 expr = constraintExprData_unaryExprGetExpr (data);
2109 constraintExpr_dump(expr, f);
2112 static constraintExpr unaryExpr_undump ( FILE *f)
2115 constraintExpr expr;
2116 constraintExprUnaryOpKind unaryOp;
2122 str = mstring_create (MAX_DUMP_LINE_LENGTH);
2124 str = fgets(os, MAX_DUMP_LINE_LENGTH, f);
2126 unaryOp = (constraintExprUnaryOpKind) reader_getInt(&str);
2128 expr = constraintExpr_undump (f);
2130 ret = constraintExpr_makeUnaryOp (expr, unaryOp);
2137 void constraintExpr_dump (/*@observer@*/ constraintExpr expr, FILE *f)
2139 constraintExprKind kind;
2145 fprintf(f,"%d\n", (int) kind);
2150 t = constraintExprData_termGetTerm (expr->data);
2151 constraintTerm_dump (t, f);
2154 unaryExpr_dump (expr->data, f);
2157 binaryExpr_dump (expr->data, f);
2162 /*@only@*/ constraintExpr constraintExpr_undump (FILE *f)
2164 constraintExprKind kind;
2171 s = mstring_create (MAX_DUMP_LINE_LENGTH);
2175 s = fgets(os, MAX_DUMP_LINE_LENGTH, f);
2177 kind = (constraintExprKind) reader_getInt(&s);
2184 t = constraintTerm_undump (f);
2185 ret = constraintExpr_makeTerm(t);
2188 ret = unaryExpr_undump (f);
2191 ret = binaryExpr_undump (f);
2199 int constraintExpr_getDepth (constraintExpr ex)
2203 constraintExprKind kind;
2205 llassert (ex != NULL);
2215 ret = constraintExpr_getDepth (constraintExprData_unaryExprGetExpr (ex->data) );
2221 ret = constraintExpr_getDepth (constraintExprData_binaryExprGetExpr1 (ex->data) );
2225 ret += constraintExpr_getDepth (constraintExprData_binaryExprGetExpr2 (ex->data) );
2236 bool constraintExpr_canGetCType (constraintExpr e) /*@*/
2238 if (e->kind == term)
2244 DPRINTF(( message("constraintExpr_canGetCType: can't get type for %s ",
2245 constraintExpr_print(e) ) ));
2250 ctype constraintExpr_getCType (constraintExpr e) /*@*/
2254 llassert(constraintExpr_canGetCType(e) );
2259 t = constraintExprData_termGetTerm (e->data);
2260 return (constraintTerm_getCType(t) );
2261 /* assume that a unary expression will be an int ... */
2263 return ctype_signedintegral;
2265 /* drl for just return type of first operand */
2268 constraintExpr_getCType
2269 (constraintExprData_binaryExprGetExpr1 (e->data) )
2277 /* drl add 10-5-001 */
2279 static bool constraintExpr_hasTypeChange(constraintExpr e)
2281 if (constraintExpr_isDefined((e)) && (e->ct == TRUE) )
2286 if (e->kind == unaryExpr)
2288 if (constraintExprData_unaryExprGetOp (e->data) == MAXSET)
2292 ce = constraintExprData_unaryExprGetExpr(e->data);
2294 return (constraintExpr_hasTypeChange(ce) );
2301 /* drl add 10-5-001 */
2303 static ctype constraintExpr_getOrigType (constraintExpr e)
2306 llassert(constraintExpr_hasTypeChange(e) );
2314 if (e->kind == unaryExpr)
2316 if (constraintExprData_unaryExprGetOp (e->data) == MAXSET)
2320 ce = constraintExprData_unaryExprGetExpr(e->data);
2322 return (constraintExpr_getOrigType(ce) );
2330 /*drl added these around 10/18/001*/
2332 static /*@only@*/ constraintExpr constraintExpr_div (/*@only@*/ constraintExpr e, /*@unused@*/ ctype ct)
2337 static /*@only@*/ constraintExpr constraintTerm_simpleDivTypeExprNode(/*@only@*/ constraintExpr e, ctype ct)
2340 exprNode t1, t2, expr;
2345 message("constraintTerm_simpleDivTypeExprNode e=%s, ct=%s",
2346 constraintExpr_print(e), ctype_unparse(ct)
2350 t = constraintExprData_termGetTerm(e->data);
2352 expr = constraintTerm_getExprNode(t);
2354 if (expr->kind == XPR_OP)
2358 t1 = exprData_getOpA (data);
2359 t2 = exprData_getOpB (data);
2360 tok = exprData_getOpTok (data);
2361 if (lltok_isMult(tok) )
2364 if ((t1->kind == XPR_SIZEOF) || (t1->kind == XPR_SIZEOFT) )
2368 if (t1->kind == XPR_SIZEOFT)
2370 ct2 = qtype_getType (exprData_getType (t1->edata));
2374 ct2 = qtype_getType (exprData_getType(exprData_getSingle (t1->edata)->edata ) );
2376 if (ctype_match (ctype_makePointer(ct2), ct) )
2378 /* this is a bit sloopy but ... */
2379 constraintExpr_free(e);
2380 return constraintExpr_makeExprNode(t2);
2385 else if ((t2->kind == XPR_SIZEOF) || (t2->kind == XPR_SIZEOFT) )
2389 if (t2->kind == XPR_SIZEOFT)
2391 ct2 = qtype_getType (exprData_getType (t2->edata));
2395 ct2 = qtype_getType (exprData_getType(exprData_getSingle (t2->edata)->edata ) );
2397 if (ctype_match (ctype_makePointer(ct2),ct) )
2399 /* sloopy way to do this... */ /*@i22*/
2400 constraintExpr_free(e);
2401 return constraintExpr_makeExprNode(t1);
2411 return (constraintExpr_div (e, ct) );
2414 static /*@only@*/ constraintExpr simpleDivType (/*@only@*/ constraintExpr e, ctype ct)
2417 DPRINTF(( (message("simpleDiv got %s ", constraintExpr_unparse(e) ) )
2427 t = constraintExprData_termGetTerm(e->data);
2430 if (constraintTerm_isExprNode (t) )
2432 return constraintTerm_simpleDivTypeExprNode(e, ct);
2434 /* search for * size of ct and remove */
2436 return constraintExpr_div (e, ct);
2441 constraintExpr temp;
2443 temp = constraintExprData_binaryExprGetExpr1 (e->data);
2444 temp = constraintExpr_copy(temp);
2445 temp = simpleDivType (temp, ct);
2447 e->data = constraintExprData_binaryExprSetExpr1 (e->data, temp);
2449 temp = constraintExprData_binaryExprGetExpr2 (e->data);
2450 temp = constraintExpr_copy(temp);
2451 temp = simpleDivType (temp, ct);
2452 e->data = constraintExprData_binaryExprSetExpr2 (e->data, temp);
2454 DPRINTF(( (message("simpleDiv binaryexpr returning %s ", constraintExpr_unparse(e) ) )
2460 return constraintExpr_div (e, ct);
2467 static /*@only@*/ constraintExpr constraintExpr_adjustMaxSetForCast(/*@only@*/ constraintExpr e, ctype ct)
2470 DPRINTF(( (message("constraintExpr_adjustMaxSetForCast got %s ", constraintExpr_unparse(e) ) )
2473 e = constraintExpr_makeIncConstraintExpr(e);
2475 e = constraintExpr_simplify(e);
2478 e = simpleDivType (e, ct);
2480 e = constraintExpr_makeDecConstraintExpr(e);
2482 e = constraintExpr_simplify(e);
2484 DPRINTF(( (message("constraintExpr_adjustMaxSetForCast returning %s ", constraintExpr_unparse(e) ) )