+/*
+** Splint - annotation-assisted static program checker
+** Copyright (C) 1994-2003 University of Virginia,
+** Massachusetts Institute of Technology
+**
+** This program is free software; you can redistribute it and/or modify it
+** under the terms of the GNU General Public License as published by the
+** Free Software Foundation; either version 2 of the License, or (at your
+** option) any later version.
+**
+** This program is distributed in the hope that it will be useful, but
+** WITHOUT ANY WARRANTY; without even the implied warranty of
+** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+** General Public License for more details.
+**
+** The GNU General Public License is available from http://www.gnu.org/ or
+** the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+** MA 02111-1307, USA.
+**
+** For information on splint: info@splint.org
+** To report a bug: splint-bug@splint.org
+** For more information: http://www.splint.org
+*/
/*
-** constraintList.c
+** constraintGeneration.c
*/
-//#define DEBUGPRINT 1
+/* #define DEBUGPRINT 1 */
# include <ctype.h> /* for isdigit */
-# include "lclintMacros.nf"
+# include "splintMacros.nf"
# include "basic.h"
-# include "cgrammar.h"
+
# include "cgrammar_tokens.h"
# include "exprChecks.h"
-# include "aliasChecks.h"
# include "exprNodeSList.h"
-# include "exprData.i"
-//# include "exprDataQuite.i"
-
-#ifndef exprNode_isError
-#warning wtf
-# define exprNode_isError(e) ((e) == exprNode_undefined)
-#else
-#warning strange
-#endif
-
-#define myexprNode_isError(e) ((e) == exprNode_undefined)
-
-
-
-bool /*@alt void@*/ exprNode_generateConstraints (/*@temp@*/ exprNode e);
-static bool exprNode_handleError( exprNode p_e);
+/*drl We need to access the internal representation of exprNode
+ because these functions walk down the parse tree and need a richer
+information than is accessible through the exprNode interface.*/
+
+/*@access exprNode@*/
-//static cstring exprNode_findConstraints ( exprNode p_e);
-static bool exprNode_isMultiStatement(exprNode p_e);
-static bool exprNode_multiStatement (exprNode p_e);
-bool exprNode_exprTraverse (exprNode e, bool definatelv, bool definaterv, fileloc sequencePoint);
-//static void exprNode_constraintPropagateUp (exprNode p_e);
-constraintList exprNode_traversRequiresConstraints (exprNode e);
-constraintList exprNode_traversEnsuresConstraints (exprNode e);
+static /*@nullwhentrue@*/ bool exprNode_handleError (/*@temp@*/ exprNode p_e);
-constraintList exprNode_traversTrueEnsuresConstraints (exprNode e);
+static void exprNode_stmt (/*@temp@*/ /*@temp@*/ exprNode p_e);
+static void exprNode_multiStatement (/*@temp@*/ exprNode p_e);
-extern constraintList reflectChanges (constraintList pre2, constraintList post1);
+static constraintList exprNode_traversTrueEnsuresConstraints (/*@temp@*/ exprNode p_e);
+static constraintList exprNode_traversFalseEnsuresConstraints (/*@temp@*/ exprNode p_e);
-void mergeResolve (exprNode parent, exprNode child1, exprNode child2);
-exprNode makeDataTypeConstraints (exprNode e);
-constraintList constraintList_makeFixedArrayConstraints (sRefSet s);
-constraintList checkCall (exprNode fcn, exprNodeList arglist);
+static void checkArgumentList (/*@out@*/ exprNode p_temp, exprNodeList p_arglist, fileloc p_sequencePoint) /*@modifies p_temp @*/;
-bool exprNode_testd()
-{
- /* if ( ( (exprNode_isError ) ) )
- {
- }
- if ( ( (e_1 ) ) )
- {
- }
- */
-}
+static constraintList checkCall (/*@temp@*/ exprNode p_fcn, exprNodeList p_arglist);
-bool exprNode_isUnhandled (exprNode e)
+static bool exprNode_isUnhandled (/*@temp@*/ /*@observer@*/ exprNode e)
{
- llassert( exprNode_isDefined(e) );
+ llassert(exprNode_isDefined(e));
switch (e->kind)
{
case XPR_INITBLOCK:
case XPR_VAARG:
case XPR_ITERCALL:
case XPR_ITER:
- case XPR_CAST:
case XPR_GOTO:
case XPR_CONTINUE:
case XPR_BREAK:
case XPR_TOK:
case XPR_FTDEFAULT:
case XPR_DEFAULT:
- case XPR_SWITCH:
case XPR_FTCASE:
case XPR_CASE:
- case XPR_INIT:
case XPR_NODE:
- DPRINTF((message ("Warning current constraint generation does not handle expression %s", exprNode_unparse(e)) ) );
+ DPRINTF((message ("Warning current constraint generation does not handle expression %s", exprNode_unparse(e))));
return TRUE;
/*@notreached@*/
break;
return FALSE;
}
-bool exprNode_handleError( exprNode e)
+/*@nullwhentrue@*/ bool exprNode_handleError (exprNode e)
{
- if (exprNode_isError (e) || exprNode_isUnhandled(e) )
+ if (exprNode_isError (e) || exprNode_isUnhandled (e))
{
- static /*@only@*/ cstring error = cstring_undefined;
-
- if (!cstring_isDefined (error))
- {
- error = cstring_makeLiteral ("<error>");
- }
-
- /*@-unqualifiedtrans*/ return TRUE; /*@=unqualifiedtrans*/
+ return TRUE;
}
+
return FALSE;
}
-bool /*@alt void@*/ exprNode_generateConstraints (/*@temp@*/ exprNode e)
+/* evans 2002-03-2 - parameter was dependent */
+bool /*@alt void@*/ exprNode_generateConstraints (/*@temp@*/ exprNode e)
{
- if (exprNode_isError (e) )
+ if (exprNode_isError (e))
return FALSE;
-
- if (exprNode_isUnhandled (e) )
+
+ if (exprNode_isUnhandled (e))
{
- DPRINTF( (message("Warning ignoring %s", exprNode_unparse (e) ) ) );
- e->requiresConstraints = constraintList_new();
- e->ensuresConstraints = constraintList_new();
- e->trueEnsuresConstraints = constraintList_new();
- e->falseEnsuresConstraints = constraintList_new();
- // llassert(FALSE);
+ DPRINTF((message("Warning ignoring %s", exprNode_unparse (e))));
return FALSE;
}
-
- // e = makeDataTypeConstraints (e);
-
- DPRINTF((message ("exprNode_generateConstraints Analysising %s at %s", exprNode_unparse( e),
- fileloc_unparse(exprNode_getfileloc(e) ) ) ) );
+ DPRINTF((message ("exprNode_generateConstraints Analysising %s at %s", exprNode_unparse(e),
+ fileloc_unparse(exprNode_getfileloc(e)))));
- if (exprNode_isMultiStatement ( e) )
+ if (exprNode_isMultiStatement (e))
{
exprNode_multiStatement(e);
}
else
{
- // llassert(FALSE);
+/* fileloc loc; */
+
+/* loc = exprNode_getNextSequencePoint(e); */
+/* exprNode_exprTraverse(e, FALSE, FALSE, loc); */
+
+/* fileloc_free(loc); */
+
+ exprNode_stmt(e);
return FALSE;
+
}
{
constraintList c;
c = constraintList_makeFixedArrayConstraints (e->uses);
- e->requiresConstraints = reflectChanges (e->requiresConstraints, c);
-
- // e->ensuresConstraints = constraintList_mergeEnsures(c, e->ensuresConstraints);
-
+ e->requiresConstraints = constraintList_reflectChangesFreePre (e->requiresConstraints, c);
+ constraintList_free(c);
}
- /* printf ("%s", (message ("%s", constraintList_printDetailed (e->requiresConstraints) ) ) );
- printf ("%s", (message ("%s", constraintList_printDetailed (e->ensuresConstraints) ) ) ); */
+ DPRINTF ((message ("e->requiresConstraints %s", constraintList_unparseDetailed (e->requiresConstraints))));
return FALSE;
}
-
-/* handles multiple statements */
-
-bool exprNode_isMultiStatement(exprNode e)
+static void exprNode_stmt (/*@temp@*/ exprNode e)
{
-if (exprNode_handleError (e) != NULL)
- return FALSE;
-
- switch (e->kind)
+ exprNode snode;
+ fileloc loc;
+ cstring s;
+
+ if (exprNode_isError(e))
{
- case XPR_FOR:
- case XPR_FORPRED:
- case XPR_IF:
- case XPR_IFELSE:
- case XPR_WHILE:
- case XPR_WHILEPRED:
- case XPR_DOWHILE:
- case XPR_BLOCK:
- case XPR_STMT:
- case XPR_STMTLIST:
- return TRUE;
- default:
- return FALSE;
+ return;
}
-}
-
-bool exprNode_stmt (exprNode e)
-{
- exprNode snode;
- fileloc loc;
- bool notError;
+ /*e->requiresConstraints = constraintList_makeNew();
+ e->ensuresConstraints = constraintList_makeNew(); */
+
+ DPRINTF(("expNode_stmt: STMT:"));
+ s = exprNode_unparse(e);
+ DPRINTF ((message("exprNode_stmt: STMT: %s ", s)));
+
+ if (e->kind == XPR_INIT)
+ {
+ constraintList tempList;
+ DPRINTF (("Init"));
+ DPRINTF ((message ("%s ", exprNode_unparse (e))));
+ loc = exprNode_getNextSequencePoint(e); /* reduces to an expression */
+ exprNode_exprTraverse (e, FALSE, FALSE, loc);
+ fileloc_free(loc);
+
+ tempList = e->requiresConstraints;
+ e->requiresConstraints = exprNode_traversRequiresConstraints(e);
+ constraintList_free(tempList);
+
+ tempList = e->ensuresConstraints;
+ e->ensuresConstraints = exprNode_traversEnsuresConstraints(e);
+ constraintList_free(tempList);
+ return;
+ }
- if (exprNode_isError(e) )
+ /*drl 2/13/002 patched bug so return statement will be checked*/
+ /*return is a stmt not not expression ...*/
+ if (e->kind == XPR_RETURN)
{
- return FALSE;
+ constraintList tempList;
+
+ loc = exprNode_getNextSequencePoint(e); /* reduces to an expression */
+
+ exprNode_exprTraverse (exprData_getSingle (e->edata), FALSE, TRUE, loc);
+ fileloc_free(loc);
+
+ tempList = e->requiresConstraints;
+ e->requiresConstraints = exprNode_traversRequiresConstraints(e);
+ constraintList_free(tempList);
}
- e->requiresConstraints = constraintList_new();
- e->ensuresConstraints = constraintList_new();
- // e = makeDataTypeConstraints(e);
-
- DPRINTF(( "STMT:") );
- DPRINTF ( ( cstring_toCharsSafe ( exprNode_unparse(e)) )
- );
if (e->kind != XPR_STMT)
{
- DPRINTF (("Not Stmt") );
- DPRINTF ( (message ("%s ", exprNode_unparse (e)) ) );
- if (exprNode_isMultiStatement (e) )
+ DPRINTF (("Not Stmt"));
+ DPRINTF ((message ("%s ", exprNode_unparse (e))));
+
+ if (exprNode_isMultiStatement (e))
{
- return exprNode_multiStatement (e );
+ exprNode_multiStatement (e); /* evans 2001-08-21: spurious return removed */
}
- BPRINTF( (message ("Ignoring non-statement %s", exprNode_unparse(e) ) ) );
- return TRUE;
- // llassert(FALSE);
+ else
+ {
+ loc = exprNode_getNextSequencePoint(e); /* reduces to an expression */
+
+ exprNode_exprTraverse (e, FALSE, TRUE, loc);
+ fileloc_free(loc);
+
+ }
+ return;
}
- DPRINTF (("Stmt") );
- DPRINTF ( (message ("%s ", exprNode_unparse (e)) ) );
+ DPRINTF (("Stmt"));
+ DPRINTF ((message ("%s ", exprNode_unparse (e))));
snode = exprData_getUopNode (e->edata);
if (exprNode_isMultiStatement (snode))
{
- // llassert(FALSE);
- return exprNode_multiStatement (snode);
+ exprNode_multiStatement (snode);
+ (void) exprNode_copyConstraints (e, snode);
+ return;
}
loc = exprNode_getNextSequencePoint(e); /* reduces to an expression */
- notError = exprNode_exprTraverse (snode, FALSE, FALSE, loc);
+ exprNode_exprTraverse (snode, FALSE, FALSE, loc);
+
+ fileloc_free(loc);
+
+ constraintList_free (e->requiresConstraints);
e->requiresConstraints = exprNode_traversRequiresConstraints(snode);
- // printf ("For: %s \n", exprNode_unparse (e) );
- // printf ("%s\n", constraintList_print(e->requiresConstraints) );
+
+ constraintList_free (e->ensuresConstraints);
e->ensuresConstraints = exprNode_traversEnsuresConstraints(snode);
- // printf ("Ensures that:\n %s\n", constraintList_print(e->ensuresConstraints) );
- // llassert(notError);
- return notError;
-
-}
+ DPRINTF ((message ("smtlist constraints are: pre: %s \n and \t post %s\n",
+ constraintList_unparse(e->requiresConstraints),
+ constraintList_unparse(e->ensuresConstraints))));
+
+ return;
+}
-bool exprNode_stmtList (exprNode e)
+static void exprNode_stmtList (/*@dependent@*/ exprNode e)
{
exprNode stmt1, stmt2;
- if (exprNode_isError (e) )
+ if (exprNode_isError (e))
{
- return FALSE;
+ return;
}
- e->requiresConstraints = constraintList_new();
- e->ensuresConstraints = constraintList_new();
- // e = makeDataTypeConstraints(e);
-
- /*Handle case of stmtList with only one statement:
- The parse tree stores this as stmt instead of stmtList*/
+ /*
+ Handle case of stmtList with only one statement:
+ The parse tree stores this as stmt instead of stmtList
+ */
+
if (e->kind != XPR_STMTLIST)
{
- return exprNode_stmt(e);
+ exprNode_stmt(e);
+ return;
}
llassert (e->kind == XPR_STMTLIST);
- DPRINTF(( "STMTLIST:") );
- DPRINTF ((cstring_toCharsSafe (exprNode_unparse(e)) ) );
+ DPRINTF(("exprNode_stmtList STMTLIST:"));
+ DPRINTF ((cstring_toCharsSafe (exprNode_unparse(e))));
stmt1 = exprData_getPairA (e->edata);
stmt2 = exprData_getPairB (e->edata);
- DPRINTF((" stmtlist ") );
- DPRINTF ((message("XW%s | %s", exprNode_unparse(stmt1), exprNode_unparse(stmt2) ) ) );
+ DPRINTF(("exprNode_stmtlist "));
+ DPRINTF ((message("XW%s | %s", exprNode_unparse(stmt1), exprNode_unparse(stmt2))));
exprNode_stmt (stmt1);
- DPRINTF(("\nstmt after stmtList call " ));
+ DPRINTF(("\nstmt after stmtList call "));
exprNode_stmt (stmt2);
- mergeResolve (e, stmt1, stmt2 );
+ exprNode_mergeResolve (e, stmt1, stmt2);
- DPRINTF ( (message ("smtlist constraints are: pre: %s \n and \t post %s\n",
- constraintList_print(e->requiresConstraints),
- constraintList_print(e->ensuresConstraints) ) ) );
- return TRUE;
+ DPRINTF ((message ("smtlist constraints are: pre: %s \n and \t post %s\n",
+ constraintList_unparse(e->requiresConstraints),
+ constraintList_unparse(e->ensuresConstraints))));
+ return;
}
-
-exprNode doIf (exprNode e, exprNode test, exprNode body)
+static exprNode doIf (/*@returned@*/ exprNode e, /*@dependent@*/ exprNode test, /*@dependent@*/ exprNode body)
{
- test->trueEnsuresConstraints = exprNode_traversTrueEnsuresConstraints(test);
- e->requiresConstraints = reflectChanges (body->requiresConstraints, test->trueEnsuresConstraints);
- e->requiresConstraints = reflectChanges (e->requiresConstraints,
+ constraintList temp;
+
+ DPRINTF ((message ("doIf: %s ", exprNode_unparse(e))));
+
+ llassert(exprNode_isDefined(test));
+ llassert (exprNode_isDefined (e));
+ llassert (exprNode_isDefined (body));
+
+
+ DPRINTF((message ("ensures constraints for %s are %s", exprNode_unparse(e), constraintList_unparseDetailed(e->ensuresConstraints))));
+
+ DPRINTF((message ("Requires constraints for %s are %s", exprNode_unparse(e), constraintList_unparseDetailed(e->ensuresConstraints))));
+
+ DPRINTF((message ("trueEnsures constraints for %s are %s", exprNode_unparse(e), constraintList_unparseDetailed(e->trueEnsuresConstraints))));
+
+ DPRINTF((message ("falseEnsures constraints for %s are %s", exprNode_unparse(e), constraintList_unparseDetailed(e->falseEnsuresConstraints))));
+
+
+
+ DPRINTF((message ("ensures constraints for %s are %s", exprNode_unparse(test), constraintList_unparseDetailed(test->ensuresConstraints))));
+
+ DPRINTF((message ("Requires constraints for %s are %s", exprNode_unparse(test), constraintList_unparseDetailed(test->ensuresConstraints))));
+
+ DPRINTF((message ("trueEnsures constraints for %s are %s", exprNode_unparse(test), constraintList_unparseDetailed(test->trueEnsuresConstraints))));
+
+ DPRINTF((message ("falseEnsures constraints for %s are %s", exprNode_unparse(test), constraintList_unparseDetailed(test->falseEnsuresConstraints))));
+
+
+
+ temp = test->trueEnsuresConstraints;
+ test->trueEnsuresConstraints = exprNode_traversTrueEnsuresConstraints(test);
+ constraintList_free(temp);
+
+ temp = test->ensuresConstraints;
+ test->ensuresConstraints = exprNode_traversEnsuresConstraints (test);
+ constraintList_free(temp);
+
+ temp = test->requiresConstraints;
+ test->requiresConstraints = exprNode_traversRequiresConstraints (test);
+ constraintList_free(temp);
+
+
+ test->trueEnsuresConstraints = constraintList_substituteFreeTarget(test->trueEnsuresConstraints, test->ensuresConstraints);
+
+ DPRINTF ((message ("doIf: test ensures %s ", constraintList_unparse(test->ensuresConstraints))));
+
+ DPRINTF ((message ("doIf: test true ensures %s ", constraintList_unparse(test->trueEnsuresConstraints))));
+
+ constraintList_free(e->requiresConstraints);
+
+
+ e->requiresConstraints = constraintList_reflectChanges(body->requiresConstraints, test->trueEnsuresConstraints);
+
+ e->requiresConstraints = constraintList_reflectChangesFreePre (e->requiresConstraints,
test->ensuresConstraints);
-#warning bad
+ temp = e->requiresConstraints;
+ e->requiresConstraints = constraintList_mergeRequires (e->requiresConstraints, test->requiresConstraints);
+ constraintList_free(temp);
+
+
+ /* drl possible problem : warning bad */
+ constraintList_free(e->ensuresConstraints);
e->ensuresConstraints = constraintList_copy (test->ensuresConstraints);
+
+ if (exprNode_mayEscape (body))
+ {
+ DPRINTF ((message("doIf: the if statement body %s returns or exits", exprNode_unparse(body))));
+ e->ensuresConstraints = constraintList_mergeEnsuresFreeFirst (e->ensuresConstraints,
+ test->falseEnsuresConstraints);
+ }
+
+ DPRINTF ((message ("doIf: if requiers %s ", constraintList_unparse(e->requiresConstraints))));
+
+ return e;
+}
+
+/*drl added 3/4/2001
+ Also used for condition i.e. ?: operation
+
+ Precondition
+ This function assumes that p, trueBranch, falseBranch have have all been traversed
+ for constraints i.e. we assume that exprNode_traversEnsuresConstraints,
+ exprNode_traversRequiresConstraints, exprNode_traversTrueEnsuresConstraints,
+ exprNode_traversFalseEnsuresConstraints have all been run
+*/
+
+static exprNode doIfElse (/*@returned@*/ exprNode e, /*@dependent@*/ exprNode p, /*@dependent@*/ exprNode trueBranch, /*@dependent@*/ exprNode falseBranch)
+{
+ constraintList c1, cons, t, t2, f, f2;
+
+ llassert (exprNode_isDefined (e));
+ llassert (exprNode_isDefined (p));
+ llassert (exprNode_isDefined (trueBranch));
+ llassert (exprNode_isDefined (falseBranch));
+ DPRINTF ((message ("doIfElse: %s ", exprNode_unparse(e))));
+
+ /* do requires clauses */
+ c1 = constraintList_copy (p->ensuresConstraints);
+
+ t = constraintList_reflectChanges(trueBranch->requiresConstraints, p->trueEnsuresConstraints);
+ t = constraintList_reflectChangesFreePre (t, p->ensuresConstraints);
+
+ cons = constraintList_reflectChanges(falseBranch->requiresConstraints, p->falseEnsuresConstraints);
+ cons = constraintList_reflectChangesFreePre (cons, c1);
+
+ constraintList_free (e->requiresConstraints);
+ e->requiresConstraints = constraintList_mergeRequiresFreeFirst (t, cons);
+ e->requiresConstraints = constraintList_mergeRequiresFreeFirst (e->requiresConstraints, p->requiresConstraints);
+
+ /* do ensures clauses
+ find the the ensures lists for each subbranch
+ */
+
+ t = constraintList_mergeEnsures (p->trueEnsuresConstraints, trueBranch->ensuresConstraints);
+ t2 = t;
+ t = constraintList_mergeEnsures (p->ensuresConstraints, t);
+ constraintList_free(t2);
+
+ f = constraintList_mergeEnsures (p->falseEnsuresConstraints, falseBranch->ensuresConstraints);
+ f2 = f;
+ f = constraintList_mergeEnsures (p->ensuresConstraints, f);
+ constraintList_free(f2);
+
+ /* find ensures for whole if/else statement */
+
+ constraintList_free(e->ensuresConstraints);
+
+ e->ensuresConstraints = constraintList_logicalOr (t, f);
+
+ constraintList_free(t);
+ constraintList_free(f);
+ constraintList_free(cons);
+ constraintList_free(c1);
+
+ DPRINTF ((message ("doIfElse: if requires %q ", constraintList_unparse(e->requiresConstraints))));
+ DPRINTF ((message ("doIfElse: if ensures %q ", constraintList_unparse(e->ensuresConstraints))));
+
return e;
}
-constraintList constraintList_makeFixedArrayConstraints (sRefSet s)
+static exprNode doWhile (/*@returned@*/ exprNode e, /*@dependent@*/ exprNode test, /*@dependent@*/ exprNode body)
+{
+ DPRINTF ((message ("doWhile: %s ", exprNode_unparse(e))));
+ return doIf (e, test, body);
+}
+
+/*@only@*/ constraintList constraintList_makeFixedArrayConstraints (/*@observer@*/ sRefSet s)
{
constraintList ret;
- ret = constraintList_new();
+ constraint con;
+ ret = constraintList_makeNew();
sRefSet_elements (s, el)
{
- // llassert (el);
- if (sRef_isFixedArray(el) )
- {
- int s;
- constraint con;
- s = sRef_getArraySize(el);
- DPRINTF( (message("%s is a fixed array with size %d",
- sRef_unparse(el), s) ) );
- con = constraint_makeSRefWriteSafeInt (el, (s - 1));
- ret = constraintList_add(ret, con);
- }
- else
- {
- DPRINTF( (message("%s is not a fixed array",
- sRef_unparse(el)) ) );
- }
+ if (sRef_isFixedArray(el))
+ {
+ size_t size;
+ DPRINTF((message("%s is a fixed array",
+ sRef_unparse(el))));
+ size = sRef_getArraySize(el);
+ DPRINTF((message("%s is a fixed array with size %d",
+ sRef_unparse(el), (int)size)));
+ con = constraint_makeSRefSetBufferSize (el, size_toLong (size - 1));
+ ret = constraintList_add(ret, con);
+ }
+ else
+ {
+ DPRINTF((message("%s is not a fixed array",
+ sRef_unparse(el))));
+
+
+ if (sRef_isExternallyVisible (el))
+ {
+ /*
+ DPRINTF((message("%s is externally visible",
+ sRef_unparse(el))));
+ con = constraint_makeSRefWriteSafeInt(el, 0);
+ ret = constraintList_add(ret, con);
+
+ con = constraint_makeSRefReadSafeInt(el, 0);
+
+ ret = constraintList_add(ret, con);
+ */
+ }
+ }
}
- end_sRefSet_elements
-
- return ret;
+ end_sRefSet_elements ;
+
+ DPRINTF((message("constraintList_makeFixedArrayConstraints returning %s",
+ constraintList_unparse(ret))));
+ return ret;
}
-exprNode makeDataTypeConstraints (exprNode e)
+# if 0
+exprNode makeDataTypeConstraints (/*@returned@*/ exprNode e)
{
constraintList c;
DPRINTF(("makeDataTypeConstraints"));
c = constraintList_makeFixedArrayConstraints (e->uses);
- e->ensuresConstraints = constraintList_addList (e->ensuresConstraints, c);
-
-/* sRefSet_elements (e->uses, el) */
-/* llassert (el); */
-/* if (sRef_isFixedArray(el) ) */
-/* { */
-/* int s; */
-/* constraint con; */
-/* s = sRef_getArraySize(el); */
-/* DPRINTF( (message("%s is a fixed array with size %d", */
-/* sRef_unparse(el), s) ) ); */
-/* con = constraint_makeSRefWriteSafeInt (el, (s - 1)); */
-/* e->ensuresConstraints = constraintList_add(e->ensuresConstraints, */
-/* con); */
-/* } */
-/* else */
-/* { */
-/* DPRINTF( (message("%s is not a fixed array", */
-/* sRef_unparse(el)) ) ); */
-/* } */
-/* end_sRefSet_elements */
-
+ e->ensuresConstraints = constraintList_addListFree (e->ensuresConstraints, c);
+
return e;
}
+# endif
-
-bool exprNode_multiStatement (exprNode e)
+static void doFor (/*@dependent@*/ exprNode e, /*@dependent@*/ exprNode forPred, /*@dependent@*/ exprNode forBody)
{
-
- bool ret;
- exprData data;
- exprNode e1, e2;
- exprNode p, trueBranch, falseBranch;
- exprNode forPred, forBody;
exprNode init, test, inc;
- constraintList cons;
- constraintList t, f;
- e->requiresConstraints = constraintList_new();
- e->ensuresConstraints = constraintList_new();
- e->trueEnsuresConstraints = constraintList_new();
- e->falseEnsuresConstraints = constraintList_new();
+ /* merge the constraints: modle as if statement */
- // e = makeDataTypeConstraints(e);
+ /* init
+ if (test)
+ for body
+ inc */
+
+ llassert (exprNode_isDefined (e));
+ llassert (exprNode_isDefined (forPred));
+ llassert (exprNode_isDefined (forBody));
- DPRINTF((message ("exprNode_multistatement Analysising %s %s at", exprNode_unparse( e),
- fileloc_unparse(exprNode_getfileloc(e) ) ) ) );
+ init = exprData_getTripleInit (forPred->edata);
+ test = exprData_getTripleTest (forPred->edata);
+ inc = exprData_getTripleInc (forPred->edata);
- if (exprNode_handleError (e))
+ if (((exprNode_isError (test) /*|| (exprNode_isError(init))*/) || (exprNode_isError (inc))))
{
- return FALSE;
+ DPRINTF ((message ("strange for statement:%s, ignoring it", exprNode_unparse(e))));
+ return;
+ }
+
+ exprNode_forLoopHeuristics(e, forPred, forBody);
+
+ constraintList_free(e->requiresConstraints);
+ e->requiresConstraints = constraintList_reflectChanges(forBody->requiresConstraints, test->ensuresConstraints);
+ e->requiresConstraints = constraintList_reflectChangesFreePre (e->requiresConstraints, test->trueEnsuresConstraints);
+ e->requiresConstraints = constraintList_reflectChangesFreePre (e->requiresConstraints, forPred->ensuresConstraints);
+
+ if (!forBody->canBreak)
+ {
+ e->ensuresConstraints = constraintList_addListFree(e->ensuresConstraints, constraintList_copy(forPred->ensuresConstraints));
+ e->ensuresConstraints = constraintList_addListFree(e->ensuresConstraints,constraintList_copy(test->falseEnsuresConstraints));
+ }
+ else
+ {
+ DPRINTF(("Can break"));
}
+}
- data = e->edata;
+static /*@dependent@*/ exprNode exprNode_makeDependent(/*@returned@*/ exprNode e)
+{
+ /* !!! DRL - this is ridiculous! Read the manual on memory annotations please! */
+ return e;
+}
- ret = TRUE;
+static void
+exprNode_doGenerateConstraintSwitch
+ (/*@dependent@*/ exprNode switchExpr,
+ /*@dependent@*/ exprNode body,
+ /*@special@*/ constraintList *currentRequires,
+ /*@special@*/ constraintList *currentEnsures,
+ /*@special@*/ constraintList *savedRequires,
+ /*@special@*/ constraintList *savedEnsures)
+ /*@post:only *currentRequires, *currentEnsures, *savedRequires, *savedEnsures @*/
+ /*@sets *currentRequires, *currentEnsures, *savedRequires, *savedEnsures @*/
+{
+ exprNode stmt, stmtList;
- switch (e->kind)
+ DPRINTF((message("exprNode_doGenerateConstraintSwitch: (switch %s) %s",
+ exprNode_unparse(switchExpr), exprNode_unparse(body)
+ )));
+
+ if (exprNode_isError(body))
{
-
- case XPR_FOR:
- // ret = message ("%s %s",
- forPred = exprData_getPairA (data);
- forBody = exprData_getPairB (data);
-
-
- //first generate the constraints
- exprNode_generateConstraints (forPred);
- exprNode_generateConstraints (forBody);
-
- //merge the constraints: modle as if statement
- /* init
- if (test)
- for body
- inc */
- init = exprData_getTripleInit (forPred->edata);
- test = exprData_getTripleTest (forPred->edata);
- inc = exprData_getTripleInc (forPred->edata);
+ *currentRequires = constraintList_makeNew ();
+ *currentEnsures = constraintList_makeNew ();
+
+ *savedRequires = constraintList_makeNew ();
+ *savedEnsures = constraintList_makeNew ();
+ /*@-onlytrans@*/
+ return;
+ /*@=onlytrans@*/
+ }
- // if ( ( (exprNode_isError (test) || (exprNode_isError(init) ) || (exprNode_isError) ) ) )
- // if ( ( (myexprNode_isError (test) || (myexprNode_isError(init) ) || (myexprNode_isError) ) ) )
+ if (body->kind != XPR_STMTLIST)
+ {
+ DPRINTF((message("exprNode_doGenerateConstraintSwitch: non stmtlist: %s",
+ exprNode_unparse(body))));
+ stmt = body;
+ stmtList = exprNode_undefined;
+ stmt = exprNode_makeDependent(stmt);
+ stmtList = exprNode_makeDependent(stmtList);
+ }
+ else
+ {
+ stmt = exprData_getPairB(body->edata);
+ stmtList = exprData_getPairA(body->edata);
+ stmt = exprNode_makeDependent(stmt);
+ stmtList = exprNode_makeDependent(stmtList);
+ }
- //if ( ( (exprNode_isError ) ) )
- if ( ( (exprNode_isError (test) || (exprNode_isError(init) ) ) || (exprNode_isError (inc) ) ) )
- {
- BPRINTF ((message ("strange for statement:%s, ignoring it", exprNode_unparse(e) ) ) );
- return ret;
- }
-
- test->trueEnsuresConstraints = exprNode_traversTrueEnsuresConstraints(test);
- // e->requiresConstraints = reflectChanges (body->requiresConstraints, test->trueEnsuresConstraints);
- e->requiresConstraints = reflectChanges (e->requiresConstraints, test->ensuresConstraints);
-
- break;
+ DPRINTF((message("exprNode_doGenerateConstraintSwitch: stmtlist: %s stmt: %s",
+ exprNode_unparse(stmtList), exprNode_unparse(stmt))
+ ));
- case XPR_FORPRED:
- // ret = message ("for (%s; %s; %s)",
- exprNode_generateConstraints (exprData_getTripleInit (data) );
- exprNode_exprTraverse (exprData_getTripleTest (data),FALSE, FALSE, exprNode_loc(e));
- exprNode_generateConstraints (exprData_getTripleInc (data));
- break;
- case XPR_IF:
- DPRINTF(( "IF:") );
- DPRINTF ((exprNode_unparse(e) ) );
- // ret = message ("if (%s) %s",
- e1 = exprData_getPairA (data);
- e2 = exprData_getPairB (data);
- exprNode_exprTraverse (e1,
- FALSE, FALSE, exprNode_loc(e1));
+ exprNode_doGenerateConstraintSwitch (switchExpr, stmtList, currentRequires, currentEnsures,
+ savedRequires, savedEnsures);
- exprNode_generateConstraints (e2);
+ if (exprNode_isError(stmt))
+ /*@-onlytrans@*/
+ return;
+ /*@=onlytrans@*/
- e = doIf (e, e1, e2);
-
-
- // e->constraints = constraintList_exprNodemerge (exprData_getPairA (data),exprData_getPairB(data));
- break;
-
- case XPR_IFELSE:
- DPRINTF(("Starting IFELSE"));
- // ret = message ("if (%s) %s else %s",
- p = exprData_getTriplePred (data);
- trueBranch = exprData_getTripleTrue (data);
- falseBranch = exprData_getTripleFalse (data);
-
- exprNode_exprTraverse (p,
- FALSE, FALSE, exprNode_loc(p));
- exprNode_generateConstraints (trueBranch);
- exprNode_generateConstraints (falseBranch);
+ exprNode_stmt(stmt);
- // do requires clauses
-
- cons = reflectChanges (trueBranch->requiresConstraints, p->trueEnsuresConstraints);
- cons = reflectChanges (cons,
- p->ensuresConstraints);
- e->requiresConstraints = constraintList_copy (cons);
+ switchExpr = exprNode_makeDependent (switchExpr);
+
+ if (! exprNode_isCaseMarker(stmt))
+ {
- cons = reflectChanges (falseBranch->requiresConstraints, p->falseEnsuresConstraints);
- cons = reflectChanges (cons,
- p->ensuresConstraints);
- e->requiresConstraints = constraintList_addList (e->requiresConstraints,
- cons);
- e->requiresConstraints = constraintList_addList (e->requiresConstraints,
- p->requiresConstraints);
-
- // do ensures clauses
- // find the the ensures lists for each subbranch
- t = constraintList_mergeEnsures (p->trueEnsuresConstraints, trueBranch->ensuresConstraints);
- t = constraintList_mergeEnsures (p->ensuresConstraints, t);
+ constraintList temp;
- f = constraintList_mergeEnsures (p->falseEnsuresConstraints, falseBranch->ensuresConstraints);
- f = constraintList_mergeEnsures (p->ensuresConstraints, f);
+ DPRINTF ((message("Got normal statement %s (requires %s ensures %s)", exprNode_unparse(stmt),
+ constraintList_unparse(stmt->requiresConstraints), constraintList_unparse(stmt->ensuresConstraints))));
- // find ensures for whole if/else statement
-
- e->ensuresConstraints = constraintList_logicalOr (t, f);
- DPRINTF( ("Done IFELSE") );
- break;
- case XPR_WHILE:
- e1 = exprData_getPairA (data);
- e2 = exprData_getPairB (data);
- exprNode_exprTraverse (e1,
- FALSE, FALSE, exprNode_loc(e1));
+ temp = constraintList_reflectChanges (stmt->requiresConstraints,
+ *currentEnsures);
- exprNode_generateConstraints (e2);
-
- e1->trueEnsuresConstraints = exprNode_traversTrueEnsuresConstraints(e1);
-
- e->requiresConstraints = reflectChanges (e2->requiresConstraints, e1->trueEnsuresConstraints);
-
- e->requiresConstraints = reflectChanges (e->requiresConstraints,
- e1->ensuresConstraints);
-#warning bad
- e->ensuresConstraints = constraintList_copy (e1->ensuresConstraints);
-
- // ret = message ("while (%s) %s",
- exprNode_generateConstraints (exprData_getPairA (data));
- exprNode_generateConstraints (exprData_getPairB (data));
- // e->constraints = constraintList_exprNodemerge (exprData_getPairA (data), exprData_getPairB (data) );
- break;
+ *currentRequires = constraintList_mergeRequiresFreeFirst(
+ *currentRequires,
+ temp);
- case XPR_DOWHILE:
- // ret = message ("do { %s } while (%s)",
- exprNode_generateConstraints (exprData_getPairB (data));
- exprNode_generateConstraints (exprData_getPairA (data));
- break;
-
- case XPR_BLOCK:
- // ret = message ("{ %s }",
- exprNode_generateConstraints (exprData_getSingle (data));
- e->requiresConstraints = constraintList_copy ( (exprData_getSingle (data))->requiresConstraints );
- e->ensuresConstraints = constraintList_copy ( (exprData_getSingle (data))->ensuresConstraints );
- // e->constraints = (exprData_getSingle (data))->constraints;
- break;
+ constraintList_free(temp);
+
+ *currentEnsures = constraintList_mergeEnsuresFreeFirst
+ (*currentEnsures,
+ stmt->ensuresConstraints);
+ DPRINTF((message("returning from exprNode_doGenerateConstraintSwitch: (switch %s) %s currentRequires:"
+ "%s currentEnsures:%s",
+ exprNode_unparse(switchExpr), exprNode_unparse(body),
+ constraintList_unparse(*currentRequires), constraintList_unparse(*currentEnsures)
+ )));
+ /*@-onlytrans@*/
+ return;
+ /*@=onlytrans@*/
- case XPR_STMT:
- case XPR_STMTLIST:
- return exprNode_stmtList (e);
- /*@notreached@*/
- break;
- default:
- ret=FALSE;
}
- return ret;
-}
-bool lltok_isBoolean_Op (lltok tok)
-{
- /*this should really be a switch statement but
+ if (exprNode_isCaseMarker(stmt) && exprNode_mustEscape(stmtList))
+ {
+ /*
+ ** merge current and saved constraint with Logical Or...
+ ** make a constraint for ensures
+ */
+
+ constraintList temp;
+ constraint con;
+
+ DPRINTF ((message("Got case marker")));
+
+ if (constraintList_isUndefined(*savedEnsures) &&
+ constraintList_isUndefined(*savedRequires))
+ {
+ llassert(constraintList_isUndefined(*savedEnsures));
+ llassert(constraintList_isUndefined(*savedRequires));
+ *savedEnsures = constraintList_copy(*currentEnsures);
+ *savedRequires = constraintList_copy(*currentRequires);
+ }
+ else
+ {
+ DPRINTF ((message("Doing logical or")));
+ temp = constraintList_logicalOr (*savedEnsures, *currentEnsures);
+ constraintList_free (*savedEnsures);
+ *savedEnsures = temp;
+
+ *savedRequires = constraintList_mergeRequiresFreeFirst (*savedRequires, *currentRequires);
+ }
+
+ con = constraint_makeEnsureEqual (switchExpr, exprData_getSingle
+ (stmt->edata), exprNode_getfileloc(stmt));
+
+
+ constraintList_free(*currentEnsures);
+ *currentEnsures = constraintList_makeNew();
+ *currentEnsures = constraintList_add(*currentEnsures, con);
+
+ constraintList_free(*currentRequires);
+ *currentRequires = constraintList_makeNew();
+ DPRINTF((message("exprNode_doGenerateConstraintSwitch: (switch %s) %s savedRequires:"
+ "%s savedEnsures:%s",
+ exprNode_unparse(switchExpr), exprNode_unparse(body),
+ constraintList_unparse(*savedRequires), constraintList_unparse(*savedEnsures)
+ )));
+
+ }
+
+ else if (exprNode_isCaseMarker(stmt))
+ /* prior case has no break. */
+ {
+ /*
+ We don't do anything to the sved constraints because the case hasn't ended
+ The new ensures constraints for the case will be:
+ the constraint for the case statement (CASE_LABEL == SWITCH_EXPR) logicalOr currentEnsures
+ */
+
+ constraintList temp;
+ constraint con;
+
+ constraintList ensuresTemp;
+
+ DPRINTF ((message("Got case marker with no prior break")));
+
+ con = constraint_makeEnsureEqual (switchExpr, exprData_getSingle
+ (stmt->edata), exprNode_getfileloc(stmt));
+
+ ensuresTemp = constraintList_makeNew();
+
+ ensuresTemp = constraintList_add (ensuresTemp, con);
+
+ if (exprNode_isError(stmtList))
+ {
+ constraintList_free(*currentEnsures);
+
+ *currentEnsures = constraintList_copy(ensuresTemp);
+ constraintList_free(ensuresTemp);
+
+ }
+ else
+ {
+
+ temp = constraintList_logicalOr (*currentEnsures, ensuresTemp);
+
+ constraintList_free(*currentEnsures);
+ constraintList_free(ensuresTemp);
+
+ *currentEnsures = temp;
+ }
+ constraintList_free(*currentRequires);
+
+ *currentRequires = constraintList_makeNew();
+ }
+ else
+ {
+ /*
+ we handle the case of ! exprNode_isCaseMarker above
+ the else if clause should always be true.
+ */
+ BADEXIT;
+ }
+
+ DPRINTF((message("returning from exprNode_doGenerateConstraintSwitch: (switch %s) %s currentRequires:"
+ "%s currentEnsures:%s",
+ exprNode_unparse(switchExpr), exprNode_unparse(body),
+ constraintList_unparse(*currentRequires), constraintList_unparse(*currentEnsures)
+ )));
+ /*@-onlytrans@*/
+ return;
+ /*@=onlytrans@*/
+}
+
+
+static void exprNode_generateConstraintSwitch (/*@notnull@*/ exprNode switchStmt)
+{
+ constraintList constraintsRequires;
+ constraintList constraintsEnsures;
+ constraintList lastRequires;
+ constraintList lastEnsures;
+
+ exprNode body;
+ exprNode switchExpr;
+
+ switchExpr = exprData_getPairA (switchStmt->edata);
+ body = exprData_getPairB (switchStmt->edata);
+
+ if (!exprNode_isDefined (body))
+ {
+ return;
+ }
+
+ /*@i22*/
+ DPRINTF((message("")));
+
+ if (body->kind == XPR_BLOCK)
+ body = exprData_getSingle(body->edata);
+
+ /*
+ constraintsRequires = constraintList_undefined;
+ constraintsEnsures = constraintList_undefined;
+
+ lastRequires = constraintList_makeNew();
+ lastEnsures = constraintList_makeNew();
+ */
+
+ /*@-mustfree@*/
+ /*@i6534 - evans 2002-01-01: spurious warnings for these becuase of stack allocated storage */
+ exprNode_doGenerateConstraintSwitch (switchExpr, body, &lastRequires,
+ &lastEnsures, &constraintsRequires, &constraintsEnsures);
+ /*@=mustfree@*/
+
+ /*
+ merge current and saved constraint with Logical Or...
+ make a constraint for ensures
+ */
+
+ constraintList_free(switchStmt->requiresConstraints);
+ constraintList_free(switchStmt->ensuresConstraints);
+
+ if (constraintList_isDefined(constraintsEnsures) && constraintList_isDefined(constraintsRequires))
+ {
+ switchStmt->ensuresConstraints = constraintList_logicalOr(constraintsEnsures, lastEnsures);
+ switchStmt->requiresConstraints = constraintList_mergeRequires(constraintsRequires, lastRequires);
+ constraintList_free (constraintsRequires);
+ constraintList_free (constraintsEnsures);
+ }
+ else
+ {
+ switchStmt->ensuresConstraints = constraintList_copy(lastEnsures);
+ switchStmt->requiresConstraints = constraintList_copy(lastRequires);
+ }
+
+ constraintList_free (lastRequires);
+ constraintList_free (lastEnsures);
+
+ DPRINTF(((message(" exprNode_generateConstraintSwitch returning requires: %s and ensures %s",
+ constraintList_unparse(switchStmt->requiresConstraints),
+ constraintList_unparse(switchStmt->ensuresConstraints)
+ )
+ )));
+}
+
+static exprNode doSwitch (/*@returned@*/ /*@notnull@*/ exprNode e)
+{
+ exprNode body;
+ exprData data;
+
+ data = e->edata;
+ DPRINTF ((message ("doSwitch for: switch (%s) %s",
+ exprNode_unparse (exprData_getPairA (data)),
+ exprNode_unparse (exprData_getPairB (data)))));
+
+ body = exprData_getPairB (data);
+ exprNode_generateConstraintSwitch (e);
+ return e;
+}
+
+void exprNode_multiStatement (/*@dependent@*/ exprNode e)
+{
+
+ bool ret;
+ exprData data;
+ exprNode e1, e2;
+ exprNode p, trueBranch, falseBranch;
+ exprNode forPred, forBody;
+ exprNode test;
+
+ constraintList temp;
+
+ DPRINTF((message ("exprNode_multistatement Analysising %s %s at", exprNode_unparse(e),
+ fileloc_unparse(exprNode_getfileloc(e)))));
+
+ if (exprNode_handleError (e))
+ {
+ return;
+ }
+
+ data = e->edata;
+
+ ret = TRUE;
+
+ switch (e->kind)
+ {
+
+ case XPR_FOR:
+ forPred = exprData_getPairA (data);
+ forBody = exprData_getPairB (data);
+
+ /* First generate the constraints */
+ exprNode_generateConstraints (forPred);
+ exprNode_generateConstraints (forBody);
+
+
+ doFor (e, forPred, forBody);
+
+ break;
+
+ case XPR_FORPRED:
+ exprNode_generateConstraints (exprData_getTripleInit (data));
+ test = exprData_getTripleTest (data);
+ exprNode_exprTraverse (test,FALSE, FALSE, exprNode_loc(e));
+ exprNode_generateConstraints (exprData_getTripleInc (data));
+
+ if (!exprNode_isError(test))
+ {
+ constraintList temp2;
+ temp2 = test->trueEnsuresConstraints;
+ test->trueEnsuresConstraints = exprNode_traversTrueEnsuresConstraints(test);
+ constraintList_free(temp2);
+ }
+
+ exprNode_generateConstraints (exprData_getTripleInc (data));
+ break;
+
+ case XPR_WHILE:
+ e1 = exprData_getPairA (data);
+ e2 = exprData_getPairB (data);
+
+ exprNode_exprTraverse (e1,
+ FALSE, FALSE, exprNode_loc(e1));
+
+ exprNode_generateConstraints (e2);
+
+ e = doWhile (e, e1, e2);
+
+ break;
+
+ case XPR_IF:
+ DPRINTF(("IF:"));
+ DPRINTF ((exprNode_unparse(e)));
+ e1 = exprData_getPairA (data);
+ e2 = exprData_getPairB (data);
+
+ exprNode_exprTraverse (e1, FALSE, FALSE, exprNode_loc(e1));
+
+ exprNode_generateConstraints (e2);
+ e = doIf (e, e1, e2);
+ break;
+
+ case XPR_IFELSE:
+ DPRINTF(("Starting IFELSE"));
+ p = exprData_getTriplePred (data);
+
+ trueBranch = exprData_getTripleTrue (data);
+ falseBranch = exprData_getTripleFalse (data);
+
+ exprNode_exprTraverse (p,
+ FALSE, FALSE, exprNode_loc(p));
+ exprNode_generateConstraints (trueBranch);
+ exprNode_generateConstraints (falseBranch);
+
+ llassert (exprNode_isDefined (p));
+ temp = p->ensuresConstraints;
+ p->ensuresConstraints = exprNode_traversEnsuresConstraints (p);
+ constraintList_free(temp);
+
+ temp = p->requiresConstraints;
+ p->requiresConstraints = exprNode_traversRequiresConstraints (p);
+ constraintList_free(temp);
+
+ temp = p->trueEnsuresConstraints;
+ p->trueEnsuresConstraints = exprNode_traversTrueEnsuresConstraints(p);
+ constraintList_free(temp);
+
+
+
+ DPRINTF((message("p->trueEnsuresConstraints before substitue %s", constraintList_unparse(p->trueEnsuresConstraints) )
+ ));
+
+ /*drl 10/10/2002 this is a bit of a hack but the reason why we do this is so that any function post conditions or similar things get applied correctly to each branch. e.g. in strlen(s) < 5 we want the trueEnsures to be maxRead(s) < 5*/
+
+ p->trueEnsuresConstraints = constraintList_substituteFreeTarget (p->trueEnsuresConstraints,
+ p->ensuresConstraints);
+
+ DPRINTF(( message ("p->trueEnsuresConstraints after substitue %s", constraintList_unparse(p->trueEnsuresConstraints) )
+ ));
+
+ temp = p->falseEnsuresConstraints;
+ p->falseEnsuresConstraints = exprNode_traversFalseEnsuresConstraints(p);
+ constraintList_free(temp);
+
+ /*See comment on trueEnsures*/
+ p->falseEnsuresConstraints = constraintList_substituteFreeTarget (p->falseEnsuresConstraints,
+ p->ensuresConstraints);
+
+ e = doIfElse (e, p, trueBranch, falseBranch);
+ DPRINTF(("Done IFELSE"));
+ break;
+
+ case XPR_DOWHILE:
+
+ e2 = (exprData_getPairB (data));
+ e1 = (exprData_getPairA (data));
+
+ DPRINTF((message ("do { %s } while (%s)", exprNode_unparse(e2), exprNode_unparse(e1))));
+ exprNode_generateConstraints (e2);
+ exprNode_generateConstraints (e1);
+ e = exprNode_copyConstraints (e, e2);
+ DPRINTF ((message ("e = %s ", constraintList_unparse(e->requiresConstraints))));
+
+ break;
+
+ case XPR_BLOCK:
+ {
+ exprNode tempExpr;
+
+ tempExpr = exprData_getSingle (data);
+
+ exprNode_generateConstraints (tempExpr);
+
+ if (exprNode_isDefined(tempExpr) )
+ {
+ constraintList_free(e->requiresConstraints);
+ e->requiresConstraints = constraintList_copy (tempExpr->requiresConstraints);
+ constraintList_free(e->ensuresConstraints);
+ e->ensuresConstraints = constraintList_copy (tempExpr->ensuresConstraints);
+ }
+ else
+ {
+ llassert(FALSE);
+ }
+ }
+ break;
+
+ case XPR_SWITCH:
+ e = doSwitch (e);
+ break;
+ case XPR_STMT:
+ case XPR_STMTLIST:
+ exprNode_stmtList (e);
+ return ;
+ /*@notreached@*/
+ break;
+ default:
+ ret=FALSE;
+ }
+ return;
+}
+
+static bool lltok_isBoolean_Op (lltok tok)
+{
+ /*this should really be a switch statement but
I don't want to violate the abstraction
maybe this should go in lltok.c */
- if (lltok_isEq_Op (tok) )
+ if (lltok_isEqOp (tok))
{
return TRUE;
}
- if (lltok_isAnd_Op (tok) )
+ if (lltok_isAndOp (tok))
{
return TRUE;
}
- if (lltok_isOr_Op (tok) )
+ if (lltok_isOrOp (tok))
{
return TRUE;
}
- if (lltok_isGt_Op (tok) )
+ if (lltok_isGt_Op (tok))
{
return TRUE;
}
- if (lltok_isLt_Op (tok) )
+ if (lltok_isLt_Op (tok))
{
return TRUE;
}
- if (lltok_isLe_Op (tok) )
+ if (lltok_isLe_Op (tok))
{
return TRUE;
}
- if (lltok_isGe_Op (tok) )
+ if (lltok_isGe_Op (tok))
{
return TRUE;
}
}
-void exprNode_booleanTraverse (exprNode e, bool definatelv, bool definaterv, fileloc sequencePoint)
+static void exprNode_booleanTraverse (/*@dependent@*/ exprNode e, /*@unused@*/ bool definatelv, /*@unused@*/ bool definaterv, fileloc sequencePoint)
{
- constraint cons;
-exprNode t1, t2;
-exprData data;
-lltok tok;
-constraintList tempList;
-data = e->edata;
-
-tok = exprData_getOpTok (data);
-
-
-t1 = exprData_getOpA (data);
-t2 = exprData_getOpB (data);
-
-
-/* arithmetic tests */
+ constraint cons;
+ exprNode t1, t2;
+ exprData data;
+ lltok tok;
+ constraintList tempList, temp;
-if (lltok_isEq_Op (tok) )
-{
- cons = constraint_makeEnsureEqual (t1, t2, sequencePoint);
- e->trueEnsuresConstraints = constraintList_add(e->trueEnsuresConstraints, cons);
-}
-
+ if (exprNode_isUndefined(e) )
+ {
+ llassert (exprNode_isDefined(e) );
+ return;
+ }
+
+ data = e->edata;
+
+ tok = exprData_getOpTok (data);
+ t1 = exprData_getOpA (data);
+ t2 = exprData_getOpB (data);
- if (lltok_isLt_Op (tok) )
- {
- cons = constraint_makeEnsureLessThan (t1, t2, sequencePoint);
- e->trueEnsuresConstraints = constraintList_add(e->trueEnsuresConstraints, cons);
- cons = constraint_makeEnsureGreaterThanEqual (t1, t2, sequencePoint);
- e->falseEnsuresConstraints = constraintList_add(e->falseEnsuresConstraints, cons);
- }
-
-
-if (lltok_isGe_Op (tok) )
-{
+ /* drl 3/2/2003 we know this because of the type of expression*/
+ llassert( exprNode_isDefined(t1) && exprNode_isDefined(t2) );
- cons = constraint_makeEnsureGreaterThanEqual (t1, t2, sequencePoint);
- e->trueEnsuresConstraints = constraintList_add(e->trueEnsuresConstraints, cons);
- cons = constraint_makeEnsureLessThan (t1, t2, sequencePoint);
- e->falseEnsuresConstraints = constraintList_add(e->falseEnsuresConstraints, cons);
+ tempList = constraintList_undefined;
-}
-
-
- if (lltok_isGt_Op (tok) )
-{
- cons = constraint_makeEnsureGreaterThan (t1, t2, sequencePoint);
- e->trueEnsuresConstraints = constraintList_add(e->trueEnsuresConstraints, cons);
- cons = constraint_makeEnsureLessThanEqual (t1, t2, sequencePoint);
- e->falseEnsuresConstraints = constraintList_add(e->falseEnsuresConstraints, cons);
-}
-
-if (lltok_isLe_Op (tok) )
-{
- cons = constraint_makeEnsureLessThanEqual (t1, t2, sequencePoint);
- e->trueEnsuresConstraints = constraintList_add(e->trueEnsuresConstraints, cons);
+ /* arithmetic tests */
- cons = constraint_makeEnsureGreaterThan (t1, t2, sequencePoint);
- e->falseEnsuresConstraints = constraintList_add(e->falseEnsuresConstraints, cons);
-}
+ if (lltok_isEqOp (tok))
+ {
+ cons = constraint_makeEnsureEqual (t1, t2, sequencePoint);
+ e->trueEnsuresConstraints = constraintList_add(e->trueEnsuresConstraints, cons);
+ }
-
-
-/*Logical operations */
-
- if (lltok_isAnd_Op (tok) )
+
+ if (lltok_isLt_Op (tok))
+ {
+ cons = constraint_makeEnsureLessThan (t1, t2, sequencePoint);
+ e->trueEnsuresConstraints = constraintList_add(e->trueEnsuresConstraints, cons);
+ cons = constraint_makeEnsureGreaterThanEqual (t1, t2, sequencePoint);
+ e->falseEnsuresConstraints = constraintList_add(e->falseEnsuresConstraints, cons);
+ }
- {
- //true ensures
- tempList = constraintList_copy (t1->trueEnsuresConstraints);
- tempList = constraintList_addList (tempList, t2->trueEnsuresConstraints);
- e->trueEnsuresConstraints = constraintList_addList(e->trueEnsuresConstraints, tempList);
-
- //false ensures: fens t1 or tens t1 and fens t2
- tempList = constraintList_copy (t1->trueEnsuresConstraints);
- tempList = constraintList_addList (tempList, t2->falseEnsuresConstraints);
- tempList = constraintList_logicalOr (tempList, t1->falseEnsuresConstraints);
- e->falseEnsuresConstraints =constraintList_addList(e->falseEnsuresConstraints, tempList);
+ if (lltok_isGe_Op (tok))
+ {
+ cons = constraint_makeEnsureGreaterThanEqual (t1, t2, sequencePoint);
+ e->trueEnsuresConstraints = constraintList_add(e->trueEnsuresConstraints, cons);
- }
-
- if (lltok_isOr_Op (tok) )
+ cons = constraint_makeEnsureLessThan (t1, t2, sequencePoint);
+ e->falseEnsuresConstraints = constraintList_add(e->falseEnsuresConstraints, cons);
+ }
+
+ if (lltok_isGt_Op (tok))
+ {
+ cons = constraint_makeEnsureGreaterThan (t1, t2, sequencePoint);
+ e->trueEnsuresConstraints = constraintList_add(e->trueEnsuresConstraints, cons);
+ cons = constraint_makeEnsureLessThanEqual (t1, t2, sequencePoint);
+ e->falseEnsuresConstraints = constraintList_add(e->falseEnsuresConstraints, cons);
+ }
+
+ if (lltok_isLe_Op (tok))
+ {
+ cons = constraint_makeEnsureLessThanEqual (t1, t2, sequencePoint);
+ e->trueEnsuresConstraints = constraintList_add(e->trueEnsuresConstraints, cons);
+
+ cons = constraint_makeEnsureGreaterThan (t1, t2, sequencePoint);
+ e->falseEnsuresConstraints = constraintList_add(e->falseEnsuresConstraints, cons);
+ }
+
+ /* Logical operations */
+
+ if (lltok_isAndOp (tok))
+ {
+ /* true ensures */
+ tempList = constraintList_copy (t1->trueEnsuresConstraints);
+ tempList = constraintList_addList (tempList, t2->trueEnsuresConstraints);
+ e->trueEnsuresConstraints = constraintList_addListFree(e->trueEnsuresConstraints, tempList);
+
+ /* false ensures: fens t1 or tens t1 and fens t2 */
+ tempList = constraintList_copy (t1->trueEnsuresConstraints);
+ tempList = constraintList_addList (tempList, t2->falseEnsuresConstraints);
+ temp = tempList;
+ tempList = constraintList_logicalOr (tempList, t1->falseEnsuresConstraints);
+ constraintList_free (temp);
+
+ /* evans - was constraintList_addList - memory leak detected by splint */
+ e->falseEnsuresConstraints = constraintList_addListFree (e->falseEnsuresConstraints, tempList);
+ }
+ else if (lltok_isOrOp (tok))
{
- //false ensures
+ /* false ensures */
tempList = constraintList_copy (t1->falseEnsuresConstraints);
tempList = constraintList_addList (tempList, t2->falseEnsuresConstraints);
- e->falseEnsuresConstraints = constraintList_addList(e->falseEnsuresConstraints, tempList);
+ e->falseEnsuresConstraints = constraintList_addListFree(e->falseEnsuresConstraints, tempList);
- //true ensures: tens t1 or fens t1 and tens t2
+ /* true ensures: tens t1 or fens t1 and tens t2 */
tempList = constraintList_copy (t1->falseEnsuresConstraints);
tempList = constraintList_addList (tempList, t2->trueEnsuresConstraints);
- tempList = constraintList_logicalOr (tempList, t1->trueEnsuresConstraints);
- e->trueEnsuresConstraints =constraintList_addList(e->trueEnsuresConstraints, tempList);
+ temp = tempList;
+ tempList = constraintList_logicalOr (tempList, t1->trueEnsuresConstraints);
+ constraintList_free(temp);
+
+ e->trueEnsuresConstraints = constraintList_addListFree(e->trueEnsuresConstraints, tempList);
+ tempList = constraintList_undefined;
}
-
+ else
+ {
+ DPRINTF((message("%s is not a boolean operation", lltok_unparse(tok))));
+ }
}
-bool exprNode_exprTraverse (exprNode e, bool definatelv, bool definaterv, fileloc sequencePoint)
+void exprNode_exprTraverse (/*@dependent@*/ exprNode e, bool definatelv, bool definaterv, /*@observer@*/ /*@temp@*/ fileloc sequencePoint)
{
- exprNode t1, t2;
+ exprNode t1, t2, fcn;
lltok tok;
bool handledExprNode;
exprData data;
constraint cons;
- if (exprNode_isError(e) )
- {
- return FALSE;
- }
-
- DPRINTF((message ("exprNode_exprTraverset Analysising %s %s at", exprNode_unparse( e),
- fileloc_unparse(exprNode_getfileloc(e) ) ) ) );
+ constraintList temp;
- e->requiresConstraints = constraintList_new();
- e->ensuresConstraints = constraintList_new();
- e->trueEnsuresConstraints = constraintList_new();;
- e->falseEnsuresConstraints = constraintList_new();;
+ if (exprNode_isError(e))
+ {
+ return;
+ }
+
+ DPRINTF((message ("exprNode_exprTraverset Analysising %s %s at", exprNode_unparse(e),
+ fileloc_unparse(exprNode_getfileloc(e)))));
+
+ /*e->requiresConstraints = constraintList_makeNew();
+ e->ensuresConstraints = constraintList_makeNew();
+ e->trueEnsuresConstraints = constraintList_makeNew();;
+ e->falseEnsuresConstraints = constraintList_makeNew();;
+ */
- if (exprNode_isUnhandled (e) )
+ if (exprNode_isUnhandled (e))
{
- return FALSE;
+ return;
}
- // e = makeDataTypeConstraints (e);
-
- handledExprNode = TRUE;
-
+
+ handledExprNode = TRUE;
+
data = e->edata;
switch (e->kind)
{
-
-
case XPR_WHILEPRED:
t1 = exprData_getSingle (data);
exprNode_exprTraverse (t1, definatelv, definaterv, sequencePoint);
case XPR_FETCH:
- if (definatelv )
+ if (definatelv)
{
- t1 = (exprData_getPairA (data) );
- t2 = (exprData_getPairB (data) );
+ t1 = (exprData_getPairA (data));
+ t2 = (exprData_getPairB (data));
cons = constraint_makeWriteSafeExprNode (t1, t2);
}
else
{
- t1 = (exprData_getPairA (data) );
- t2 = (exprData_getPairB (data) );
- cons = constraint_makeReadSafeExprNode (t1, t2 );
+ t1 = (exprData_getPairA (data));
+ t2 = (exprData_getPairB (data));
+ cons = constraint_makeReadSafeExprNode (t1, t2);
}
e->requiresConstraints = constraintList_add(e->requiresConstraints, cons);
cons = constraint_makeEnsureMaxReadAtLeast (t1, t2, sequencePoint);
e->ensuresConstraints = constraintList_add(e->ensuresConstraints, cons);
- // cons = constraint_makeEnsureMinReadAtMost (t1, t2, sequencePoint);
- // e->ensuresConstraints = constraintList_add(e->ensuresConstraints, cons);
-
+
+ cons = constraint_makeEnsureLteMaxRead (t2, t1);
+ e->trueEnsuresConstraints = constraintList_add(e->trueEnsuresConstraints, cons);
+
exprNode_exprTraverse (exprData_getPairA (data), FALSE, TRUE, sequencePoint);
exprNode_exprTraverse (exprData_getPairB (data), FALSE, TRUE, sequencePoint);
- /*@i325 Should check which is array/index. */
+ /*@i325 Should check which is array/index. */
+ break;
+
+ case XPR_PARENS:
+ exprNode_exprTraverse (exprData_getUopNode (e->edata), definatelv, definaterv, sequencePoint);
+ break;
+ case XPR_INIT:
+ {
+ /*
+ idDecl t;
+
+ uentry ue;
+ exprNode lhs;
+
+ t = exprData_getInitId (data);
+ ue = usymtab_lookup (idDecl_observeId (t));
+ lhs = exprNode_createId (ue);
+ */
+ t2 = exprData_getInitNode (data);
+
+ /* DPRINTF(((message("initialization: %s = %s",
+ exprNode_unparse(lhs),
+ exprNode_unparse(t2)
+ )
+ ))); */
+
+ exprNode_exprTraverse (t2, definatelv, TRUE, sequencePoint);
+
+ /* this test is nessecary because some expressions generate a null expression node. function pointer do that -- drl */
+ if ((!exprNode_isError (e)) && (!exprNode_isError(t2)))
+ {
+ cons = constraint_makeEnsureEqual (e, t2, sequencePoint);
+ e->ensuresConstraints = constraintList_add(e->ensuresConstraints, cons);
+ }
+ }
+
+ break;
+ case XPR_ASSIGN:
+ t1 = exprData_getOpA (data);
+ t2 = exprData_getOpB (data);
+ exprNode_exprTraverse (t1, TRUE, definaterv, sequencePoint);
+ exprNode_exprTraverse (t2, definatelv, TRUE, sequencePoint);
+
+ /* this test is nessecary because some expressions generate a null expression node. function pointer do that -- drl */
+ if ((!exprNode_isError (t1)) && (!exprNode_isError(t2)))
+ {
+ cons = constraint_makeEnsureEqual (t1, t2, sequencePoint);
+ e->ensuresConstraints = constraintList_add(e->ensuresConstraints, cons);
+ }
+ break;
+ case XPR_OP:
+ t1 = exprData_getOpA (data);
+ t2 = exprData_getOpB (data);
+ tok = exprData_getOpTok (data);
+
+ if (lltok_getTok (tok) == ADD_ASSIGN)
+ {
+ exprNode_exprTraverse (t1, TRUE, definaterv, sequencePoint);
+ exprNode_exprTraverse (t2, definatelv, TRUE, sequencePoint);
+
+ cons = constraint_makeAddAssign (t1, t2, sequencePoint);
+ e->ensuresConstraints = constraintList_add(e->ensuresConstraints, cons);
+ }
+ else if (lltok_getTok (tok) == SUB_ASSIGN)
+ {
+ exprNode_exprTraverse (t1, TRUE, definaterv, sequencePoint);
+ exprNode_exprTraverse (t2, definatelv, TRUE, sequencePoint);
+
+ cons = constraint_makeSubtractAssign (t1, t2, sequencePoint);
+ e->ensuresConstraints = constraintList_add(e->ensuresConstraints, cons);
+ }
+ else
+ {
+ exprNode_exprTraverse (t1, definatelv, definaterv, sequencePoint);
+ exprNode_exprTraverse (t2, definatelv, definaterv, sequencePoint);
+ }
+
+ if (lltok_isBoolean_Op (tok))
+ exprNode_booleanTraverse (e, definatelv, definaterv, sequencePoint);
+
+ break;
+ case XPR_SIZEOFT:
+ /*@i43 drl possible problem : warning make sure the case can be ignored.. */
+
+ break;
+
+ case XPR_SIZEOF:
+ /* drl 7-16-01
+ C standard says operand to sizeof isn't evaluated unless
+ its a variable length array. So we don't generate constraints.
+ */
+
+ break;
+
+ case XPR_CALL:
+ fcn = exprData_getFcn(data);
+
+ exprNode_exprTraverse (fcn, definatelv, definaterv, sequencePoint);
+ DPRINTF ((message ("Got call that %s (%s) ", exprNode_unparse(fcn), exprNodeList_unparse (exprData_getArgs (data)))));
+
+ llassert( exprNode_isDefined(fcn) );
+
+ fcn->requiresConstraints = constraintList_addListFree (fcn->requiresConstraints,
+ checkCall (fcn, exprData_getArgs (data) ));
+
+ fcn->ensuresConstraints = constraintList_addListFree (fcn->ensuresConstraints,
+ exprNode_getPostConditions(fcn, exprData_getArgs (data),e ));
+
+ t1 = exprNode_createNew (exprNode_getType (e));
+ checkArgumentList (t1, exprData_getArgs(data), sequencePoint);
+ exprNode_mergeResolve (e, t1, fcn);
+ exprNode_free(t1);
+ break;
+
+ case XPR_RETURN:
+ exprNode_exprTraverse (exprData_getSingle (data), definatelv, definaterv, sequencePoint);
+ break;
+
+ case XPR_NULLRETURN:
+
+ break;
+
+
+ case XPR_FACCESS:
+ exprNode_exprTraverse (exprData_getFieldNode (data), definatelv, definaterv, sequencePoint);
+ break;
+
+ case XPR_ARROW:
+ exprNode_exprTraverse (exprData_getFieldNode (data), definatelv, definaterv, sequencePoint);
+ break;
+
+ case XPR_STRINGLITERAL:
+
break;
+
+ case XPR_NUMLIT:
+
+ break;
+
case XPR_PREOP:
t1 = exprData_getUopNode(data);
- //lltok_unparse (exprData_getUopTok (data));
- exprNode_exprTraverse (t1, definatelv, definaterv, sequencePoint );
- /*handle * pointer access */
- /*@ i 325 do ++ and -- */
- if (lltok_isMult( exprData_getUopTok (data) ) )
+
+ /* drl 3/2/2003 we know this because of the type of expression*/
+ llassert( exprNode_isDefined(t1) );
+
+
+ tok = (exprData_getUopTok (data));
+ exprNode_exprTraverse (t1, definatelv, definaterv, sequencePoint);
+ /*handle * pointer access */
+ if (lltok_isIncOp (tok))
+ {
+ DPRINTF(("doing ++(var)"));
+ t1 = exprData_getUopNode (data);
+ cons = constraint_makeMaxSetSideEffectPostIncrement (t1, sequencePoint);
+ e->ensuresConstraints = constraintList_add (e->ensuresConstraints, cons);
+ }
+ else if (lltok_isDecOp (tok))
+ {
+ DPRINTF(("doing --(var)"));
+ t1 = exprData_getUopNode (data);
+ cons = constraint_makeMaxSetSideEffectPostDecrement (t1, sequencePoint);
+ e->ensuresConstraints = constraintList_add (e->ensuresConstraints, cons);
+ }
+ else if (lltok_isMult(tok ))
{
if (definatelv)
{
}
e->requiresConstraints = constraintList_add(e->requiresConstraints, cons);
}
-
- /* ! expr */
- if (lltok_isNot_Op (exprData_getUopTok (data) ) )
+ else if (lltok_isNotOp (tok))
+ /* ! expr */
{
+ constraintList_free(e->trueEnsuresConstraints);
+
e->trueEnsuresConstraints = constraintList_copy (t1->falseEnsuresConstraints);
+ constraintList_free(e->falseEnsuresConstraints);
e->falseEnsuresConstraints = constraintList_copy (t1->trueEnsuresConstraints);
}
+
+ else if (lltok_isAmpersand_Op (tok))
+ {
+ break;
+ }
+ else if (lltok_isMinus_Op (tok))
+ {
+ break;
+ }
+ else if (lltok_isExcl_Op (tok))
+ {
+ break;
+ }
+ else if (lltok_isTilde_Op (tok))
+ {
+ break;
+ }
+ else
+ {
+ llcontbug (message("Unsupported preop in %s", exprNode_unparse(e)));
+ BADEXIT;
+ }
break;
- case XPR_PARENS:
- exprNode_exprTraverse (exprData_getUopNode (e->edata), definatelv, definaterv, sequencePoint);
- // e->constraints = constraintList_exprNodemerge (exprData_getUopNode (e->edata), exprNode_undefined);
- break;
- case XPR_ASSIGN:
- t1 = exprData_getOpA (data);
- t2 = exprData_getOpB (data);
- exprNode_exprTraverse (t1, TRUE, definaterv, sequencePoint );
- lltok_unparse (exprData_getOpTok (data));
- exprNode_exprTraverse (t2, definatelv, TRUE, sequencePoint );
-
- /* this test is nessecary because some expressions generate a null expression node. function pointer do that -- drl */
- if ( (!exprNode_isError (t1)) && (!exprNode_isError(t2)) )
+ case XPR_POSTOP:
+ exprNode_exprTraverse (exprData_getUopNode (data), TRUE,
+ definaterv, sequencePoint);
+
+ if (lltok_isIncOp (exprData_getUopTok (data)))
{
- cons = constraint_makeEnsureEqual (t1, t2, sequencePoint);
- e->ensuresConstraints = constraintList_add(e->ensuresConstraints, cons);
+ DPRINTF(("doing ++"));
+ t1 = exprData_getUopNode (data);
+ cons = constraint_makeMaxSetSideEffectPostIncrement (t1, sequencePoint);
+ e->ensuresConstraints = constraintList_add (e->ensuresConstraints, cons);
+ }
+ if (lltok_isDecOp (exprData_getUopTok (data)))
+ {
+ DPRINTF(("doing --"));
+ t1 = exprData_getUopNode (data);
+ cons = constraint_makeMaxSetSideEffectPostDecrement (t1, sequencePoint);
+ e->ensuresConstraints = constraintList_add (e->ensuresConstraints, cons);
}
+ break;
+ case XPR_CAST:
+ {
+ t2 = exprData_getCastNode (data);
+ DPRINTF ((message ("Examining cast (%q)%s",
+ qtype_unparse (exprData_getCastType (data)),
+ exprNode_unparse (t2))
+ ));
+ exprNode_exprTraverse (t2, definatelv, definaterv, sequencePoint);
+ }
+ break;
+ case XPR_COND:
+ {
+ exprNode pred, trueBranch, falseBranch;
+ llassert(FALSE);
+ pred = exprData_getTriplePred (data);
+ trueBranch = exprData_getTripleTrue (data);
+ falseBranch = exprData_getTripleFalse (data);
+
+ llassert (exprNode_isDefined (pred));
+ llassert (exprNode_isDefined (trueBranch));
+ llassert (exprNode_isDefined (falseBranch));
+
+ exprNode_exprTraverse (pred, FALSE, TRUE, sequencePoint);
+
+ temp = pred->ensuresConstraints;
+ pred->ensuresConstraints = exprNode_traversEnsuresConstraints(pred);
+ constraintList_free(temp);
+
+ temp = pred->requiresConstraints;
+ pred->requiresConstraints = exprNode_traversRequiresConstraints(pred);
+ constraintList_free(temp);
+
+ temp = pred->trueEnsuresConstraints;
+ pred->trueEnsuresConstraints = exprNode_traversTrueEnsuresConstraints(pred);
+ constraintList_free(temp);
+
+ temp = pred->falseEnsuresConstraints;
+ pred->falseEnsuresConstraints = exprNode_traversFalseEnsuresConstraints(pred);
+ constraintList_free(temp);
+
+ exprNode_exprTraverse (trueBranch, FALSE, TRUE, sequencePoint);
+
+ temp = trueBranch->ensuresConstraints;
+ trueBranch->ensuresConstraints = exprNode_traversEnsuresConstraints(trueBranch);
+ constraintList_free(temp);
+
+ temp = trueBranch->requiresConstraints;
+ trueBranch->requiresConstraints = exprNode_traversRequiresConstraints(trueBranch);
+ constraintList_free(temp);
+
+
+ temp = trueBranch->trueEnsuresConstraints;
+ trueBranch->trueEnsuresConstraints = exprNode_traversTrueEnsuresConstraints(trueBranch);
+ constraintList_free(temp);
+
+ temp = trueBranch->falseEnsuresConstraints;
+ trueBranch->falseEnsuresConstraints = exprNode_traversFalseEnsuresConstraints(trueBranch);
+ constraintList_free(temp);
+
+ exprNode_exprTraverse (falseBranch, FALSE, TRUE, sequencePoint);
+
+ temp = falseBranch->ensuresConstraints;
+ falseBranch->ensuresConstraints = exprNode_traversEnsuresConstraints(falseBranch);
+ constraintList_free(temp);
+
+
+ temp = falseBranch->requiresConstraints;
+ falseBranch->requiresConstraints = exprNode_traversRequiresConstraints(falseBranch);
+ constraintList_free(temp);
+
+ temp = falseBranch->trueEnsuresConstraints;
+ falseBranch->trueEnsuresConstraints = exprNode_traversTrueEnsuresConstraints(falseBranch);
+ constraintList_free(temp);
+
+ temp = falseBranch->falseEnsuresConstraints;
+ falseBranch->falseEnsuresConstraints = exprNode_traversFalseEnsuresConstraints(falseBranch);
+ constraintList_free(temp);
+
+ /* if pred is true e equals true otherwise pred equals false */
+
+ cons = constraint_makeEnsureEqual (e, trueBranch, sequencePoint);
+ trueBranch->ensuresConstraints = constraintList_add(trueBranch->ensuresConstraints, cons);
+
+ cons = constraint_makeEnsureEqual (e, trueBranch, sequencePoint);
+ falseBranch->ensuresConstraints = constraintList_add(falseBranch->ensuresConstraints, cons);
+
+ e = doIfElse (e, pred, trueBranch, falseBranch);
+ }
break;
- case XPR_OP:
- t1 = exprData_getOpA (data);
- t2 = exprData_getOpB (data);
+ case XPR_COMMA:
+ llassert(FALSE);
+ t1 = exprData_getPairA (data);
+ t2 = exprData_getPairB (data);
+ /* we essiantially treat this like expr1; expr2
+ of course sequencePoint isn't adjusted so this isn't completely accurate
+ problems../ */
+ exprNode_exprTraverse (t1, FALSE, FALSE, sequencePoint);
+ exprNode_exprTraverse (t2, definatelv, definaterv, sequencePoint);
+ exprNode_mergeResolve (e, t1, t2);
+ break;
+
+ default:
+ handledExprNode = FALSE;
+ }
+
+ e->requiresConstraints = constraintList_preserveOrig (e->requiresConstraints);
+ e->ensuresConstraints = constraintList_preserveOrig (e->ensuresConstraints);
+ e->requiresConstraints = constraintList_addGeneratingExpr (e->requiresConstraints, e);
+
+ e->ensuresConstraints = constraintList_addGeneratingExpr (e->ensuresConstraints, e);
+
+
+ e->requiresConstraints = constraintList_removeSurpressed(e->requiresConstraints);
+
+ DPRINTF((message ("ensures constraints for %s are %s", exprNode_unparse(e), constraintList_unparseDetailed(e->ensuresConstraints))));
+
+ DPRINTF((message ("Requires constraints for %s are %s", exprNode_unparse(e), constraintList_unparseDetailed(e->ensuresConstraints))));
+
+ DPRINTF((message ("trueEnsures constraints for %s are %s", exprNode_unparse(e), constraintList_unparseDetailed(e->trueEnsuresConstraints))));
+
+ DPRINTF((message ("falseEnsures constraints for %s are %s", exprNode_unparse(e), constraintList_unparseDetailed(e->falseEnsuresConstraints))));
+
+ return;
+}
+
+
+constraintList exprNode_traversTrueEnsuresConstraints (exprNode e)
+{
+ exprNode t1;
+
+ bool handledExprNode;
+ exprData data;
+ constraintList ret;
+
+ if (exprNode_handleError (e))
+ {
+ ret = constraintList_makeNew();
+ return ret;
+ }
+
+ ret = constraintList_copy (e->trueEnsuresConstraints);
+
+ handledExprNode = TRUE;
+
+ data = e->edata;
+
+ switch (e->kind)
+ {
+ case XPR_WHILEPRED:
+ t1 = exprData_getSingle (data);
+ ret = constraintList_addListFree (ret, exprNode_traversTrueEnsuresConstraints (t1));
+ break;
+
+ case XPR_FETCH:
- exprNode_exprTraverse (t1, definatelv, definaterv, sequencePoint );
- tok = exprData_getOpTok (data);
- exprNode_exprTraverse (t2, definatelv, definaterv, sequencePoint );
+ ret = constraintList_addListFree (ret,
+ exprNode_traversTrueEnsuresConstraints
+ (exprData_getPairA (data)));
+
+ ret = constraintList_addListFree (ret,
+ exprNode_traversTrueEnsuresConstraints
+ (exprData_getPairB (data)));
+ break;
+ case XPR_PREOP:
+
+ ret = constraintList_addListFree (ret,
+ exprNode_traversTrueEnsuresConstraints
+ (exprData_getUopNode (data)));
+ break;
+
+ case XPR_PARENS:
+ ret = constraintList_addListFree (ret, exprNode_traversTrueEnsuresConstraints
+ (exprData_getUopNode (data)));
+ break;
- if (lltok_isBoolean_Op (tok) )
- exprNode_booleanTraverse (e, definatelv, definaterv, sequencePoint);
+ case XPR_INIT:
+ ret = constraintList_addListFree (ret,
+ exprNode_traversTrueEnsuresConstraints
+ (exprData_getInitNode (data)));
+ break;
- // e->constraints = constraintList_exprNodemerge (exprData_getOpA (data), exprData_getOpB (data));
- break;
+
+ case XPR_ASSIGN:
+ ret = constraintList_addListFree (ret,
+ exprNode_traversTrueEnsuresConstraints
+ (exprData_getOpA (data)));
+
+ ret = constraintList_addListFree (ret,
+ exprNode_traversTrueEnsuresConstraints
+ (exprData_getOpB (data)));
+ break;
+ case XPR_OP:
+ ret = constraintList_addListFree (ret,
+ exprNode_traversTrueEnsuresConstraints
+ (exprData_getOpA (data)));
+
+ ret = constraintList_addListFree (ret,
+ exprNode_traversTrueEnsuresConstraints
+ (exprData_getOpB (data)));
+ break;
case XPR_SIZEOFT:
- ctype_unparse (qtype_getType (exprData_getType (data) ) );
-
break;
- case XPR_SIZEOF:
- exprNode_exprTraverse (exprData_getSingle (data), definatelv, definaterv, sequencePoint );
- // e->constraints = constraintList_exprNodemerge (exprData_getSingle (e->edata), exprNode_undefined);
- break;
+ case XPR_SIZEOF:
+
+ ret = constraintList_addListFree (ret,
+ exprNode_traversTrueEnsuresConstraints
+ (exprData_getSingle (data)));
+ break;
case XPR_CALL:
- exprNode_exprTraverse (exprData_getFcn (data), definatelv, definaterv, sequencePoint );
- exprNodeList_unparse (exprData_getArgs (data) );
- DPRINTF ( (message ("Got call that %s ( %s) ", exprNode_unparse(exprData_getFcn(data) ), exprNodeList_unparse (exprData_getArgs (data) ) ) ) );
-
-
-
- e->requiresConstraints = constraintList_addList (e->requiresConstraints,
- checkCall (exprData_getFcn (data), exprData_getArgs (data) ) );
- // e->constraints = constraintList_add (e->constraints, constraint_create (e,exprNode_undefined, GT, CALLSAFE ) );
+ ret = constraintList_addListFree (ret,
+ exprNode_traversTrueEnsuresConstraints
+ (exprData_getFcn (data)));
+ /*@i11*/ /* exprNodeList_unparse (exprData_getArgs (data)); */
break;
case XPR_RETURN:
- exprNode_exprTraverse (exprData_getSingle (data), definatelv, definaterv, sequencePoint );
+ ret = constraintList_addListFree (ret,
+ exprNode_traversTrueEnsuresConstraints
+ (exprData_getSingle (data)));
break;
case XPR_NULLRETURN:
- cstring_makeLiteral ("return");;
break;
-
-
+
case XPR_FACCESS:
- exprNode_exprTraverse (exprData_getFieldNode (data), definatelv, definaterv, sequencePoint );
- exprData_getFieldName (data) ;
+ ret = constraintList_addListFree (ret,
+ exprNode_traversTrueEnsuresConstraints
+ (exprData_getFieldNode (data)));
break;
case XPR_ARROW:
- exprNode_exprTraverse (exprData_getFieldNode (data), definatelv, definaterv, sequencePoint );
- exprData_getFieldName (data);
+ ret = constraintList_addListFree (ret,
+ exprNode_traversTrueEnsuresConstraints
+ (exprData_getFieldNode (data)));
break;
case XPR_STRINGLITERAL:
- cstring_copy (exprData_getLiteral (data));
break;
case XPR_NUMLIT:
- cstring_copy (exprData_getLiteral (data));
break;
case XPR_POSTOP:
-
- exprNode_exprTraverse (exprData_getUopNode (data), TRUE, definaterv, sequencePoint );
- lltok_unparse (exprData_getUopTok (data));
- if (lltok_isInc_Op (exprData_getUopTok (data) ) )
- {
- DPRINTF(("doing ++"));
- t1 = exprData_getUopNode (data);
- cons = constraint_makeMaxSetSideEffectPostIncrement (t1, sequencePoint );
- e->ensuresConstraints = constraintList_add (e->ensuresConstraints, cons);
- // cons = constraint_makeMaxReadSideEffectPostIncrement (t1, sequencePoint );
- //e->ensuresConstraints = constraintList_add (e->ensuresConstraints, cons);
- }
+
+ ret = constraintList_addListFree (ret,
+ exprNode_traversTrueEnsuresConstraints
+ (exprData_getUopNode (data)));
+ break;
+
+ case XPR_CAST:
+
+ ret = constraintList_addListFree (ret,
+ exprNode_traversTrueEnsuresConstraints
+ (exprData_getCastNode (data)));
break;
+
default:
- handledExprNode = FALSE;
+ break;
}
- e->requiresConstraints = constraintList_preserveOrig ( e->requiresConstraints);
- e->ensuresConstraints = constraintList_preserveOrig ( e->ensuresConstraints);
-
- return handledExprNode;
+ return ret;
}
-
-constraintList exprNode_traversTrueEnsuresConstraints (exprNode e)
+constraintList exprNode_traversFalseEnsuresConstraints (exprNode e)
{
- // exprNode t1, t2;
-
+ exprNode t1;
bool handledExprNode;
- // char * mes;
exprData data;
constraintList ret;
-
- if (exprNode_handleError (e))
- {
- ret = constraintList_new();
- return ret;
- }
- ret = constraintList_copy (e->trueEnsuresConstraints );
-
- handledExprNode = TRUE;
-
+
+ if (exprNode_handleError (e))
+ {
+ ret = constraintList_makeNew();
+ return ret;
+ }
+
+ ret = constraintList_copy (e->falseEnsuresConstraints);
+ handledExprNode = TRUE;
data = e->edata;
switch (e->kind)
{
+ case XPR_WHILEPRED:
+ t1 = exprData_getSingle (data);
+ ret = constraintList_addListFree (ret,exprNode_traversFalseEnsuresConstraints (t1));
+ break;
case XPR_FETCH:
- ret = constraintList_addList (ret,
- exprNode_traversTrueEnsuresConstraints
- (exprData_getPairA (data) ) );
+ ret = constraintList_addListFree (ret,
+ exprNode_traversFalseEnsuresConstraints
+ (exprData_getPairA (data)));
- ret = constraintList_addList (ret,
- exprNode_traversTrueEnsuresConstraints
- (exprData_getPairB (data) ) );
+ ret = constraintList_addListFree (ret,
+ exprNode_traversFalseEnsuresConstraints
+ (exprData_getPairB (data)));
break;
case XPR_PREOP:
- ret = constraintList_addList (ret,
- exprNode_traversTrueEnsuresConstraints
- (exprData_getUopNode (data) ) );
+ ret = constraintList_addListFree (ret,
+ exprNode_traversFalseEnsuresConstraints
+ (exprData_getUopNode (data)));
break;
case XPR_PARENS:
- ret = constraintList_addList (ret, exprNode_traversTrueEnsuresConstraints
- (exprData_getUopNode (data) ) );
+ ret = constraintList_addListFree (ret, exprNode_traversFalseEnsuresConstraints
+ (exprData_getUopNode (data)));
break;
+ case XPR_INIT:
+ ret = constraintList_addListFree (ret,
+ exprNode_traversFalseEnsuresConstraints
+ ( exprData_getInitNode (data)));
+ break;
+
case XPR_ASSIGN:
- ret = constraintList_addList (ret,
- exprNode_traversTrueEnsuresConstraints
- (exprData_getOpA (data) ) );
+ ret = constraintList_addListFree (ret,
+ exprNode_traversFalseEnsuresConstraints
+ (exprData_getOpA (data)));
- ret = constraintList_addList (ret,
- exprNode_traversTrueEnsuresConstraints
- (exprData_getOpB (data) ) );
+ ret = constraintList_addListFree (ret,
+ exprNode_traversFalseEnsuresConstraints
+ (exprData_getOpB (data)));
break;
case XPR_OP:
- ret = constraintList_addList (ret,
- exprNode_traversTrueEnsuresConstraints
- (exprData_getOpA (data) ) );
+ ret = constraintList_addListFree (ret,
+ exprNode_traversFalseEnsuresConstraints
+ (exprData_getOpA (data)));
- ret = constraintList_addList (ret,
- exprNode_traversTrueEnsuresConstraints
- (exprData_getOpB (data) ) );
+ ret = constraintList_addListFree (ret,
+ exprNode_traversFalseEnsuresConstraints
+ (exprData_getOpB (data)));
break;
case XPR_SIZEOFT:
-
- // ctype_unparse (qtype_getType (exprData_getType (data) ) );
-
break;
case XPR_SIZEOF:
- ret = constraintList_addList (ret,
- exprNode_traversTrueEnsuresConstraints
- (exprData_getSingle (data) ) );
+ ret = constraintList_addListFree (ret,
+ exprNode_traversFalseEnsuresConstraints
+ (exprData_getSingle (data)));
break;
case XPR_CALL:
- ret = constraintList_addList (ret,
- exprNode_traversTrueEnsuresConstraints
- (exprData_getFcn (data) ) );
- /*@i11*/ // exprNodeList_unparse (exprData_getArgs (data) );
- break;
+ ret = constraintList_addListFree (ret,
+ exprNode_traversFalseEnsuresConstraints
+ (exprData_getFcn (data)));
+ /*@i11*/ /* exprNodeList_unparse (exprData_getArgs (data)); */
+ break;
case XPR_RETURN:
- ret = constraintList_addList (ret,
- exprNode_traversTrueEnsuresConstraints
- (exprData_getSingle (data) ) );
+ ret = constraintList_addListFree (ret,
+ exprNode_traversFalseEnsuresConstraints
+ (exprData_getSingle (data)));
break;
case XPR_NULLRETURN:
- // cstring_makeLiteral ("return");;
break;
case XPR_FACCESS:
- ret = constraintList_addList (ret,
- exprNode_traversTrueEnsuresConstraints
- (exprData_getFieldNode (data) ) );
- //exprData_getFieldName (data) ;
+ ret = constraintList_addListFree (ret,
+ exprNode_traversFalseEnsuresConstraints
+ (exprData_getFieldNode (data)));
break;
-
+
case XPR_ARROW:
- ret = constraintList_addList (ret,
- exprNode_traversTrueEnsuresConstraints
- (exprData_getFieldNode (data) ) );
- // exprData_getFieldName (data);
+ ret = constraintList_addListFree (ret,
+ exprNode_traversFalseEnsuresConstraints
+ (exprData_getFieldNode (data)));
break;
case XPR_STRINGLITERAL:
- // cstring_copy (exprData_getLiteral (data));
break;
case XPR_NUMLIT:
- // cstring_copy (exprData_getLiteral (data));
break;
case XPR_POSTOP:
- ret = constraintList_addList (ret,
- exprNode_traversTrueEnsuresConstraints
- (exprData_getUopNode (data) ) );
+ ret = constraintList_addListFree (ret,
+ exprNode_traversFalseEnsuresConstraints
+ (exprData_getUopNode (data)));
break;
+
+ case XPR_CAST:
+
+ ret = constraintList_addListFree (ret,
+ exprNode_traversFalseEnsuresConstraints
+ (exprData_getCastNode (data)));
+ break;
+
default:
break;
}
/* walk down the tree and get all requires Constraints in each subexpression*/
-constraintList exprNode_traversRequiresConstraints (exprNode e)
+/*@only@*/ constraintList exprNode_traversRequiresConstraints (exprNode e)
{
- // exprNode t1, t2;
+ exprNode t1;
bool handledExprNode;
- // char * mes;
exprData data;
constraintList ret;
if (exprNode_handleError (e))
{
- ret = constraintList_new();
+ ret = constraintList_makeNew();
return ret;
}
- ret = constraintList_copy (e->requiresConstraints );
-
- handledExprNode = TRUE;
-
+
+ ret = constraintList_copy (e->requiresConstraints);
+ handledExprNode = TRUE;
data = e->edata;
switch (e->kind)
{
+ case XPR_WHILEPRED:
+ t1 = exprData_getSingle (data);
+ ret = constraintList_addListFree (ret, exprNode_traversRequiresConstraints (t1));
+ break;
case XPR_FETCH:
- ret = constraintList_addList (ret,
+ ret = constraintList_addListFree (ret,
exprNode_traversRequiresConstraints
- (exprData_getPairA (data) ) );
+ (exprData_getPairA (data)));
- ret = constraintList_addList (ret,
+ ret = constraintList_addListFree (ret,
exprNode_traversRequiresConstraints
- (exprData_getPairB (data) ) );
+ (exprData_getPairB (data)));
break;
case XPR_PREOP:
- ret = constraintList_addList (ret,
+ ret = constraintList_addListFree (ret,
exprNode_traversRequiresConstraints
- (exprData_getUopNode (data) ) );
+ (exprData_getUopNode (data)));
break;
case XPR_PARENS:
- ret = constraintList_addList (ret, exprNode_traversRequiresConstraints
- (exprData_getUopNode (data) ) );
+ ret = constraintList_addListFree (ret, exprNode_traversRequiresConstraints
+ (exprData_getUopNode (data)));
break;
+ case XPR_INIT:
+ ret = constraintList_addListFree (ret,
+ exprNode_traversRequiresConstraints
+ (exprData_getInitNode (data)));
+ break;
+
case XPR_ASSIGN:
- ret = constraintList_addList (ret,
+ ret = constraintList_addListFree (ret,
exprNode_traversRequiresConstraints
- (exprData_getOpA (data) ) );
+ (exprData_getOpA (data)));
- ret = constraintList_addList (ret,
+ ret = constraintList_addListFree (ret,
exprNode_traversRequiresConstraints
- (exprData_getOpB (data) ) );
+ (exprData_getOpB (data)));
break;
case XPR_OP:
- ret = constraintList_addList (ret,
+ ret = constraintList_addListFree (ret,
exprNode_traversRequiresConstraints
- (exprData_getOpA (data) ) );
+ (exprData_getOpA (data)));
- ret = constraintList_addList (ret,
+ ret = constraintList_addListFree (ret,
exprNode_traversRequiresConstraints
- (exprData_getOpB (data) ) );
+ (exprData_getOpB (data)));
break;
case XPR_SIZEOFT:
-
- // ctype_unparse (qtype_getType (exprData_getType (data) ) );
-
break;
case XPR_SIZEOF:
- ret = constraintList_addList (ret,
+ ret = constraintList_addListFree (ret,
exprNode_traversRequiresConstraints
- (exprData_getSingle (data) ) );
+ (exprData_getSingle (data)));
break;
case XPR_CALL:
- ret = constraintList_addList (ret,
+ ret = constraintList_addListFree (ret,
exprNode_traversRequiresConstraints
- (exprData_getFcn (data) ) );
- /*@i11*/ // exprNodeList_unparse (exprData_getArgs (data) );
- break;
+ (exprData_getFcn (data)));
+ /*@i11*/ /* exprNodeList_unparse (exprData_getArgs (data)); */
+ break;
case XPR_RETURN:
- ret = constraintList_addList (ret,
+ ret = constraintList_addListFree (ret,
exprNode_traversRequiresConstraints
- (exprData_getSingle (data) ) );
+ (exprData_getSingle (data)));
break;
case XPR_NULLRETURN:
- // cstring_makeLiteral ("return");;
break;
case XPR_FACCESS:
- ret = constraintList_addList (ret,
- exprNode_traversRequiresConstraints
- (exprData_getFieldNode (data) ) );
- //exprData_getFieldName (data) ;
+ ret = constraintList_addListFree (ret,
+ exprNode_traversRequiresConstraints
+ (exprData_getFieldNode (data)));
break;
-
+
case XPR_ARROW:
- ret = constraintList_addList (ret,
- exprNode_traversRequiresConstraints
- (exprData_getFieldNode (data) ) );
- // exprData_getFieldName (data);
+ ret = constraintList_addListFree (ret,
+ exprNode_traversRequiresConstraints
+ (exprData_getFieldNode (data)));
break;
case XPR_STRINGLITERAL:
- // cstring_copy (exprData_getLiteral (data));
break;
case XPR_NUMLIT:
- // cstring_copy (exprData_getLiteral (data));
break;
case XPR_POSTOP:
- ret = constraintList_addList (ret,
+ ret = constraintList_addListFree (ret,
exprNode_traversRequiresConstraints
- (exprData_getUopNode (data) ) );
+ (exprData_getUopNode (data)));
break;
+
+ case XPR_CAST:
+
+ ret = constraintList_addListFree (ret,
+ exprNode_traversRequiresConstraints
+ (exprData_getCastNode (data)));
+ break;
+
default:
break;
}
/* walk down the tree and get all Ensures Constraints in each subexpression*/
-constraintList exprNode_traversEnsuresConstraints (exprNode e)
+/*@only@*/ constraintList exprNode_traversEnsuresConstraints (exprNode e)
{
- // exprNode t1, t2;
+ exprNode t1;
bool handledExprNode;
- // char * mes;
exprData data;
- // constraintExpr tmp;
- // constraint cons;
constraintList ret;
-
- if (exprNode_handleError (e))
- {
- ret = constraintList_new();
- return ret;
- }
-
- ret = constraintList_copy (e->ensuresConstraints );
- handledExprNode = TRUE;
-
+ if (exprNode_handleError (e))
+ {
+ ret = constraintList_makeNew();
+ return ret;
+ }
+
+ ret = constraintList_copy (e->ensuresConstraints);
+ handledExprNode = TRUE;
+
data = e->edata;
-
- DPRINTF( (message (
- "exprnode_traversEnsuresConstraints call for %s with constraintList of %s",
+
+ DPRINTF ((message ("exprnode_traversEnsuresConstraints call for %s with "
+ "constraintList of %s",
exprNode_unparse (e),
- constraintList_print(e->ensuresConstraints)
+ constraintList_unparse(e->ensuresConstraints)
)
));
switch (e->kind)
{
+ case XPR_WHILEPRED:
+ t1 = exprData_getSingle (data);
+ ret = constraintList_addListFree (ret,exprNode_traversEnsuresConstraints (t1));
+ break;
case XPR_FETCH:
+ ret = constraintList_addListFree (ret,
+ exprNode_traversEnsuresConstraints
+ (exprData_getPairA (data)));
- ret = constraintList_addList (ret,
- exprNode_traversEnsuresConstraints
- (exprData_getPairA (data) ) );
-
- ret = constraintList_addList (ret,
- exprNode_traversEnsuresConstraints
- (exprData_getPairB (data) ) );
+ ret = constraintList_addListFree (ret,
+ exprNode_traversEnsuresConstraints
+ (exprData_getPairB (data)));
break;
case XPR_PREOP:
-
- ret = constraintList_addList (ret,
- exprNode_traversEnsuresConstraints
- (exprData_getUopNode (data) ) );
+ ret = constraintList_addListFree (ret,
+ exprNode_traversEnsuresConstraints
+ (exprData_getUopNode (data)));
break;
case XPR_PARENS:
- ret = constraintList_addList (ret, exprNode_traversEnsuresConstraints
- (exprData_getUopNode (data) ) );
+ ret = constraintList_addListFree (ret, exprNode_traversEnsuresConstraints
+ (exprData_getUopNode (data)));
+ break;
+
+ case XPR_INIT:
+ ret = constraintList_addListFree (ret,
+ exprNode_traversEnsuresConstraints
+ (exprData_getInitNode (data)));
break;
+
+
case XPR_ASSIGN:
- ret = constraintList_addList (ret,
- exprNode_traversEnsuresConstraints
- (exprData_getOpA (data) ) );
-
- ret = constraintList_addList (ret,
- exprNode_traversEnsuresConstraints
- (exprData_getOpB (data) ) );
- break;
- case XPR_OP:
- ret = constraintList_addList (ret,
- exprNode_traversEnsuresConstraints
- (exprData_getOpA (data) ) );
-
- ret = constraintList_addList (ret,
- exprNode_traversEnsuresConstraints
- (exprData_getOpB (data) ) );
- break;
- case XPR_SIZEOFT:
+ ret = constraintList_addListFree (ret,
+ exprNode_traversEnsuresConstraints
+ (exprData_getOpA (data)));
- // ctype_unparse (qtype_getType (exprData_getType (data) ) );
+ ret = constraintList_addListFree (ret,
+ exprNode_traversEnsuresConstraints
+ (exprData_getOpB (data)));
+ break;
+ case XPR_OP:
+ ret = constraintList_addListFree (ret,
+ exprNode_traversEnsuresConstraints
+ (exprData_getOpA (data)));
+ ret = constraintList_addListFree (ret,
+ exprNode_traversEnsuresConstraints
+ (exprData_getOpB (data)));
+ break;
+ case XPR_SIZEOFT:
break;
case XPR_SIZEOF:
-
- ret = constraintList_addList (ret,
- exprNode_traversEnsuresConstraints
- (exprData_getSingle (data) ) );
- break;
-
+ ret = constraintList_addListFree (ret,
+ exprNode_traversEnsuresConstraints
+ (exprData_getSingle (data)));
+ break;
case XPR_CALL:
- ret = constraintList_addList (ret,
- exprNode_traversEnsuresConstraints
- (exprData_getFcn (data) ) );
- /*@i11*/ // exprNodeList_unparse (exprData_getArgs (data) );
- break;
-
+ ret = constraintList_addListFree (ret,
+ exprNode_traversEnsuresConstraints
+ (exprData_getFcn (data)));
+ /*@i11*/ /* exprNodeList_unparse (exprData_getArgs (data)); */
+ break;
case XPR_RETURN:
- ret = constraintList_addList (ret,
- exprNode_traversEnsuresConstraints
- (exprData_getSingle (data) ) );
+ ret = constraintList_addListFree (ret,
+ exprNode_traversEnsuresConstraints
+ (exprData_getSingle (data)));
break;
-
case XPR_NULLRETURN:
- // cstring_makeLiteral ("return");;
break;
-
case XPR_FACCESS:
- ret = constraintList_addList (ret,
- exprNode_traversEnsuresConstraints
- (exprData_getFieldNode (data) ) );
- //exprData_getFieldName (data) ;
+ ret = constraintList_addListFree (ret,
+ exprNode_traversEnsuresConstraints
+ (exprData_getFieldNode (data)));
break;
-
case XPR_ARROW:
- ret = constraintList_addList (ret,
- exprNode_traversEnsuresConstraints
- (exprData_getFieldNode (data) ) );
- // exprData_getFieldName (data);
+ ret = constraintList_addListFree (ret,
+ exprNode_traversEnsuresConstraints
+ (exprData_getFieldNode (data)));
break;
-
case XPR_STRINGLITERAL:
- // cstring_copy (exprData_getLiteral (data));
break;
-
case XPR_NUMLIT:
- // cstring_copy (exprData_getLiteral (data));
break;
case XPR_POSTOP:
-
- ret = constraintList_addList (ret,
- exprNode_traversEnsuresConstraints
- (exprData_getUopNode (data) ) );
- break;
+ ret = constraintList_addListFree (ret,
+ exprNode_traversEnsuresConstraints
+ (exprData_getUopNode (data)));
+ break;
+ case XPR_CAST:
+ ret = constraintList_addListFree (ret,
+ exprNode_traversEnsuresConstraints
+ (exprData_getCastNode (data)));
+ break;
default:
break;
}
-DPRINTF( (message (
- "exprnode_traversEnsuresConstraints call for %s with constraintList of is returning %s",
- exprNode_unparse (e),
- // constraintList_print(e->ensuresConstraints),
- constraintList_print(ret)
- )
- ));
-
+ DPRINTF((message ("exprnode_traversEnsuresConstraints call for %s with "
+ "constraintList of is returning %s",
+ exprNode_unparse (e),
+ constraintList_unparse(ret))));
+
return ret;
}
+/*drl moved out of constraintResolve.c 07-02-001 */
+void checkArgumentList (/*@out@*/ exprNode temp, exprNodeList arglist,
+ fileloc sequencePoint)
+{
+
+ llassert(temp != NULL );
+
+ temp->requiresConstraints = constraintList_makeNew();
+ temp->ensuresConstraints = constraintList_makeNew();
+ temp->trueEnsuresConstraints = constraintList_makeNew();
+ temp->falseEnsuresConstraints = constraintList_makeNew();
+
+ exprNodeList_elements (arglist, el)
+ {
+ constraintList temp2;
+
+ llassert(exprNode_isDefined(el) );
+
+ exprNode_exprTraverse (el, FALSE, FALSE, sequencePoint);
+ temp2 = el->requiresConstraints;
+ el->requiresConstraints = exprNode_traversRequiresConstraints(el);
+ constraintList_free(temp2);
+
+ temp2 = el->ensuresConstraints;
+ el->ensuresConstraints = exprNode_traversEnsuresConstraints(el);
+ constraintList_free(temp2);
+
+ temp->requiresConstraints = constraintList_addList(temp->requiresConstraints,
+ el->requiresConstraints);
+
+ temp->ensuresConstraints = constraintList_addList(temp->ensuresConstraints,
+ el->ensuresConstraints);
+ }
+ end_exprNodeList_elements;
+
+}
+
+/*drl moved out of constraintResolve.c 07-03-001 */
+constraintList exprNode_getPostConditions (exprNode fcn, exprNodeList arglist, exprNode fcnCall)
+{
+ constraintList postconditions;
+ uentry temp;
+ DPRINTF((message ("Got call that %s (%s) ", exprNode_unparse(fcn), exprNodeList_unparse (arglist))));
+
+ temp = exprNode_getUentry (fcn);
+
+ postconditions = uentry_getFcnPostconditions (temp);
+
+ if (constraintList_isDefined (postconditions))
+ {
+ postconditions = constraintList_doSRefFixConstraintParam (postconditions, arglist);
+ postconditions = constraintList_doFixResult (postconditions, fcnCall);
+ }
+ else
+ {
+ postconditions = constraintList_makeNew();
+ }
+
+ return postconditions;
+}
+
+/*
+comment this out for now
+we'll include it in a production release when its stable...
+
+ void findStructs (exprNodeList arglist)
+{
+
+ ctype ct, rt;
+
+ DPRINTF((
+ message("doing findStructs: %s", exprNodeList_unparse(arglist))
+ ));
+
+
+ exprNodeList_elements(arglist, expr)
+ {
+ ct = exprNode_getType(expr);
+
+ rt = ctype_realType (ct);
+
+ if (ctype_isStruct (rt))
+ TPRINTF((message("Found structure %s", exprNode_unparse(expr))
+ ));
+ if (hasInvariants(ct))
+ {
+ constraintList invars;
+
+ invars = getInvariants(ct);
+
+
+ TPRINTF((message ("findStructs has invariants %s ", constraintList_unparse (invars))
+ ));
+
+ invars = constraintList_doSRefFixStructConstraint(invars, exprNode_getSref(expr), ct);
+
+
+ TPRINTF((message ("findStructs finded invariants to be %s ", constraintList_unparse (invars))
+ ));
+ }
+ }
+ end_exprNodeList_elements;
+}
+
+*/
+
+/*drl moved out of constraintResolve.c 07-02-001 */
+constraintList checkCall (/*@dependent@*/ exprNode fcn, exprNodeList arglist)
+{
+ constraintList preconditions;
+ uentry temp;
+ DPRINTF((message ("Got call that %s (%s) ", exprNode_unparse(fcn), exprNodeList_unparse (arglist))));
+
+ temp = exprNode_getUentry (fcn);
+
+ preconditions = uentry_getFcnPreconditions (temp);
+
+ if (constraintList_isDefined(preconditions))
+ {
+ preconditions = constraintList_togglePost (preconditions);
+ preconditions = constraintList_preserveCallInfo(preconditions, fcn);
+ preconditions = constraintList_doSRefFixConstraintParam (preconditions, arglist);
+ }
+ else
+ {
+ if (constraintList_isUndefined(preconditions))
+ preconditions = constraintList_makeNew();
+ }
+
+ if (context_getFlag (FLG_IMPLICTCONSTRAINT) )
+ {
+
+ /*
+ uentryList_elements (arglist, el)
+ {
+ sRef s;
+ TPRINTF((message("setImplictfcnConstraints doing: %s", uentry_unparse(el) ) ));
+
+ s = uentry_getSref(el);
+ if (sRef_isReference (s) )
+ {
+ TPRINTF((message ("%s is a pointer", sRef_unparse(s) ) ));
+ }
+ else
+ {
+ TPRINTF((message ("%s is NOT a pointer", sRef_unparse(s) ) ));
+ }
+ //drl 4/26/01
+ //chagned this from MaxSet(s) == 0 to MaxSet(s) >= 0
+ c = constraint_makeSRefWriteSafeInt (s, 0);
+
+ implicitFcnConstraints = constraintList_add(implicitFcnConstraints , c);
+
+ //drl 10/23/2002 added support for out
+ if (!uentry_isOut(el) )
+ {
+ c = constraint_makeSRefReadSafeInt (s, 0);
+ implicitFcnConstraints = constraintList_add(implicitFcnConstraints , c);
+ }
+
+
+ }
+ */
+ }
+
+ DPRINTF ((message("Done checkCall\n")));
+ DPRINTF ((message("Returning list %q ", constraintList_unparseDetailed(preconditions))));
+
+ /*
+ drl we're going to comment this out for now
+ we'll include it if we're sure it's working
+
+ findStructs(arglist);
+ */
+
+ return preconditions;
+}
+
+/*drl added this function 10.29.001
+ takes an exprNode of the form const + const
+ and sets the value
+*/
+/*drl
+ I'm a bit nervous about modifying the exprNode
+ but this is the easy way to do this
+ If I have time I'd like to cause the exprNode to get created correctly in the first place */
+/*@i223*/
+void exprNode_findValue(exprNode e)
+{
+ exprData data;
+
+ exprNode t1, t2;
+ lltok tok;
+
+ llassert(exprNode_isDefined(e) );
+
+ data = e->edata;
+
+ if (exprNode_hasValue(e))
+ return;
+
+ if (e->kind == XPR_OP)
+ {
+ t1 = exprData_getOpA (data);
+ t2 = exprData_getOpB (data);
+ tok = exprData_getOpTok (data);
+
+ exprNode_findValue(t1);
+ exprNode_findValue(t2);
+
+ if (!(exprNode_knownIntValue(t1) && (exprNode_knownIntValue(t2))))
+ return;
+
+ if (lltok_isPlus_Op (tok))
+ {
+ long v1, v2;
+
+ v1 = exprNode_getLongValue(t1);
+ v2 = exprNode_getLongValue(t2);
+
+ if (multiVal_isDefined(e->val))
+ multiVal_free (e->val);
+
+ e->val = multiVal_makeInt (v1 + v2);
+ }
+
+ if (lltok_isMinus_Op (tok))
+ {
+ long v1, v2;
+
+ v1 = exprNode_getLongValue(t1);
+ v2 = exprNode_getLongValue(t2);
+
+ if (multiVal_isDefined(e->val))
+ {
+ multiVal_free (e->val);
+ }
+
+ e->val = multiVal_makeInt (v1 - v2);
+ }
+
+ /*drl I should really do * and / at some point */
+
+ }
+
+}
-#ifndef exprNode_isError
-#warning wtf
-# define exprNode_isError(e) ((e) == exprNode_undefined)
-#else
-#warning strange
-#endif
andersk / splint.git / blobdiff