/*
-** constraintList.c
+** constraintGeneration.c
*/
+/* #define DEBUGPRINT 1 */
+
# include <ctype.h> /* for isdigit */
# include "lclintMacros.nf"
# include "basic.h"
-# include "cgrammar.h"
+
# include "cgrammar_tokens.h"
# include "exprChecks.h"
-# include "aliasChecks.h"
# include "exprNodeSList.h"
-# include "exprData.i"
-void /*@alt bool@*/ exprNode_generateConstraints (/*@temp@*/ exprNode e);
-static bool exprNode_handleError( exprNode p_e);
+/*@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);
-void mergeResolve (exprNode parent, exprNode child1, exprNode child2);
+static bool exprNode_handleError(/*@dependent@*/ exprNode p_e);
-
-bool exprNode_isUnhandled (exprNode e)
+static bool exprNode_isMultiStatement(/*@dependent@*/ exprNode p_e);
+static void exprNode_multiStatement (/*@dependent@*/ exprNode p_e);
+
+static constraintList exprNode_traversTrueEnsuresConstraints (/*@dependent@*/ exprNode p_e);
+static constraintList exprNode_traversFalseEnsuresConstraints (/*@dependent@*/ exprNode p_e);
+
+static void checkArgumentList (/*@out@*/ exprNode p_temp, exprNodeList p_arglist, fileloc p_sequencePoint) /*@modifies p_temp @*/;
+
+static constraintList checkCall (/*@dependent@*/ exprNode p_fcn, exprNodeList p_arglist);
+
+static bool exprNode_isUnhandled (/*@dependent@*/ /*@observer@*/ exprNode e)
{
llassert( exprNode_isDefined(e) );
switch (e->kind)
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)) ) );
- return FALSE;
+ return TRUE;
/*@notreached@*/
break;
default:
- return TRUE;
+ return FALSE;
}
/*not reached*/
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;
return FALSE;
}
-void /*@alt bool@*/ exprNode_generateConstraints (/*@temp@*/ exprNode e)
+bool /*@alt void@*/ exprNode_generateConstraints (/*@dependent@*/ exprNode e)
{
- DPRINTF((message ("exprNode_gnerateConstraints Analysising %s %s at", exprNode_unparse( e),
+ if (exprNode_isError (e) )
+ return FALSE;
+
+ if (exprNode_isUnhandled (e) )
+ {
+ DPRINTF( (message("Warning ignoring %s", exprNode_unparse (e) ) ) );
+ return FALSE;
+ }
+
+ DPRINTF((message ("exprNode_generateConstraints Analysising %s at %s", exprNode_unparse( e),
fileloc_unparse(exprNode_getfileloc(e) ) ) ) );
-
+
if (exprNode_isMultiStatement ( e) )
{
- return exprNode_multiStatement(e);
+ exprNode_multiStatement(e);
}
else
{
- llassert(FALSE);
+ fileloc loc;
+
+ loc = exprNode_getNextSequencePoint(e);
+ exprNode_exprTraverse(e, FALSE, FALSE, loc);
+
+ fileloc_free(loc);
+ return FALSE;
}
+
+ {
+ constraintList c;
+ c = constraintList_makeFixedArrayConstraints (e->uses);
+ e->requiresConstraints = constraintList_reflectChangesFreePre (e->requiresConstraints, c);
+ constraintList_free(c);
+ }
+
+ DPRINTF ( (message ("e->requiresConstraints %s", constraintList_printDetailed (e->requiresConstraints) ) ) );
return FALSE;
}
case XPR_BLOCK:
case XPR_STMT:
case XPR_STMTLIST:
+ case XPR_SWITCH:
return TRUE;
default:
return FALSE;
}
-bool exprNode_stmt (exprNode e)
+static void exprNode_stmt ( /*@dependent@*/ /*@temp@*/ exprNode e)
{
exprNode snode;
fileloc loc;
- bool notError;
-
+ cstring s;
+
if (exprNode_isError(e) )
{
- return FALSE;
+ return;
}
- e->requiresConstraints = constraintList_new();
- e->ensuresConstraints = constraintList_new();
-
+
+ /*e->requiresConstraints = constraintList_makeNew();
+ e->ensuresConstraints = constraintList_makeNew(); */
- DPRINTF(( "STMT:") );
- DPRINTF ( ( cstring_toCharsSafe ( exprNode_unparse(e)) )
- );
+ 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 (e->kind != XPR_STMT)
{
DPRINTF (("Not Stmt") );
DPRINTF ( (message ("%s ", exprNode_unparse (e)) ) );
- if (exprNode_isMultiStatement (e) )
+
+ if (exprNode_isMultiStatement (e))
{
- return exprNode_multiStatement (e );
+ exprNode_multiStatement (e); /* evans 2001-08-21: spurious return removed */
}
- llassert(FALSE);
+
+ DPRINTF( (message ("Ignoring non-statement %s", exprNode_unparse(e) ) ) );
+ return;
}
DPRINTF (("Stmt") );
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 ("%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_print(e->requiresConstraints),
+ constraintList_print(e->ensuresConstraints) ) ) );
+
+ return;
+}
-bool exprNode_stmtList (exprNode e)
+static void exprNode_stmtList (/*@dependent@*/ exprNode e)
{
exprNode stmt1, stmt2;
if (exprNode_isError (e) )
{
- return FALSE;
+ return;
}
- e->requiresConstraints = constraintList_new();
- e->ensuresConstraints = constraintList_new();
-
- /*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(( "exprNode_stmtList STMTLIST:") );
DPRINTF ((cstring_toCharsSafe (exprNode_unparse(e)) ) );
stmt1 = exprData_getPairA (e->edata);
stmt2 = exprData_getPairB (e->edata);
-
+
+ DPRINTF(("exprNode_stmtlist ") );
+ DPRINTF ((message("XW%s | %s", exprNode_unparse(stmt1), exprNode_unparse(stmt2) ) ) );
+
exprNode_stmt (stmt1);
DPRINTF(("\nstmt after stmtList call " ));
exprNode_stmt (stmt2);
-
- mergeResolve (e, stmt1, stmt2 );
- TPRINTF ( (message ("smtlist constraints are: pre: %s \n and \t post %s\n",
+ 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;
+ return;
+}
+
+static exprNode doIf (/*@returned@*/ exprNode e, /*@dependent@*/ exprNode test, /*@dependent@*/ exprNode body)
+{
+ 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_printDetailed(e->ensuresConstraints) ) ));
+
+ DPRINTF((message ("Requires constraints for %s are %s", exprNode_unparse(e), constraintList_printDetailed(e->ensuresConstraints) ) ));
+
+ DPRINTF((message ("trueEnsures constraints for %s are %s", exprNode_unparse(e), constraintList_printDetailed(e->trueEnsuresConstraints) ) ));
+
+ DPRINTF((message ("falseEnsures constraints for %s are %s", exprNode_unparse(e), constraintList_printDetailed(e->falseEnsuresConstraints) ) ));
+
+
+
+ DPRINTF((message ("ensures constraints for %s are %s", exprNode_unparse(test), constraintList_printDetailed(test->ensuresConstraints) ) ));
+
+ DPRINTF((message ("Requires constraints for %s are %s", exprNode_unparse(test), constraintList_printDetailed(test->ensuresConstraints) ) ));
+
+ DPRINTF((message ("trueEnsures constraints for %s are %s", exprNode_unparse(test), constraintList_printDetailed(test->trueEnsuresConstraints) ) ));
+
+ DPRINTF((message ("falseEnsures constraints for %s are %s", exprNode_unparse(test), constraintList_printDetailed(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_print(test->ensuresConstraints) ) ) );
+
+ DPRINTF ((message ("doIf: test true ensures %s ", constraintList_print(test->trueEnsuresConstraints) ) ) );
+
+ constraintList_free(e->requiresConstraints);
+
+
+ e->requiresConstraints = constraintList_reflectChanges(body->requiresConstraints, test->trueEnsuresConstraints);
+
+ e->requiresConstraints = constraintList_reflectChangesFreePre (e->requiresConstraints,
+ test->ensuresConstraints);
+ 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_print(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
+*/
+
-bool exprNode_multiStatement (exprNode e)
+static exprNode doIfElse (/*@returned@*/ exprNode e, /*@dependent@*/ exprNode p, /*@dependent@*/ exprNode trueBranch, /*@dependent@*/ exprNode falseBranch)
{
+ constraintList c1, cons, t, t2, f, f2;
- bool ret;
- exprData data;
+ 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);
- DPRINTF((message ("exprNode_multistatement Analysising %s %s at", exprNode_unparse( e),
- fileloc_unparse(exprNode_getfileloc(e) ) ) ) );
+ f = constraintList_mergeEnsures (p->falseEnsuresConstraints, falseBranch->ensuresConstraints);
+ f2 = f;
+ f = constraintList_mergeEnsures (p->ensuresConstraints, f);
+ constraintList_free(f2);
- if (exprNode_handleError (e))
+ /* 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_print(e->requiresConstraints) ) ) );
+ DPRINTF ((message ("doIfElse: if ensures %q ", constraintList_print(e->ensuresConstraints) ) ) );
+
+ return e;
+}
+
+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;
+ constraint con;
+ ret = constraintList_makeNew();
+
+ sRefSet_elements (s, el)
{
- return FALSE;
+ if (sRef_isFixedArray(el) )
+ {
+ long int 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 - 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 ;
+
+ DPRINTF(( message("constraintList_makeFixedArrayConstraints returning %s",
+ constraintList_print(ret) ) ));
+ return ret;
+}
+
+# if 0
+exprNode makeDataTypeConstraints (/*@returned@*/ exprNode e)
+{
+ constraintList c;
+ DPRINTF(("makeDataTypeConstraints"));
+
+ c = constraintList_makeFixedArrayConstraints (e->uses);
+
+ e->ensuresConstraints = constraintList_addListFree (e->ensuresConstraints, c);
+
+ return e;
+}
+# endif
+
+static void doFor (/*@dependent@*/ exprNode e, /*@dependent@*/ exprNode forPred, /*@dependent@*/ exprNode forBody)
+{
+ exprNode init, test, inc;
+ /* 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);
+
+ if ( ( (exprNode_isError (test) /*|| (exprNode_isError(init) )*/ ) || (exprNode_isError (inc) ) ) )
+ {
+ 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") );
+ }
+}
+
+static /*@dependent@*/ exprNode exprNode_makeDependent(/*@returned@*/ exprNode e)
+{
+ /*@-temptrans@*/
+ return e;
+ /*@=temptrans@*/
+}
+
+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 @*/ /*@defines *currentRequires, *currentEnsures, *savedRequires, *savedEnsures @*/
+{
+ exprNode stmt, stmtList;
+
+ DPRINTF(( message("exprNode_doGenerateConstraintSwitch: (switch %s) %s",
+ exprNode_unparse(switchExpr), exprNode_unparse(body)
+ ) ));
+
+ if (exprNode_isError(body) )
+ {
+ *currentRequires = constraintList_makeNew();
+ *currentEnsures = constraintList_makeNew();
+
+ *savedRequires = constraintList_makeNew();
+ *savedEnsures = constraintList_makeNew();
+ /*@-onlytrans@*/
+ return;
+ /*@=onlytrans@*/
+ }
+
+ 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);
+ }
+
+ DPRINTF((message("exprNode_doGenerateConstraintSwitch: stmtlist: %s stmt: %s",
+ exprNode_unparse(stmtList), exprNode_unparse(stmt) )
+ ));
+
+
+ exprNode_doGenerateConstraintSwitch (switchExpr, stmtList, currentRequires, currentEnsures,
+ savedRequires, savedEnsures );
+
+ if (exprNode_isError(stmt) )
+ /*@-onlytrans@*/
+ return;
+ /*@=onlytrans@*/
+
+ exprNode_stmt(stmt);
+
+ switchExpr = exprNode_makeDependent (switchExpr);
+
+ if (! exprNode_isCaseMarker(stmt) )
+ {
+
+ constraintList temp;
+
+ DPRINTF (( message("Got normal statement %s (requires %s ensures %s)", exprNode_unparse(stmt),
+ constraintList_unparse(stmt->requiresConstraints), constraintList_unparse(stmt->ensuresConstraints) ) ));
+
+ temp = constraintList_reflectChanges (stmt->requiresConstraints,
+ *currentEnsures);
+
+ *currentRequires = constraintList_mergeRequiresFreeFirst(
+ *currentRequires,
+ temp);
+
+ 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_print(*currentRequires), constraintList_print(*currentEnsures)
+ ) ));
+ /*@-onlytrans@*/
+ return;
+ /*@=onlytrans@*/
+
+ }
+
+ 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_print(*savedRequires), constraintList_print(*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_print(*currentRequires), constraintList_print(*currentEnsures)
+ ) ));
+ /*@-onlytrans@*/
+ return;
+ /*@=onlytrans@*/
+
+}
+
+
+static void exprNode_generateConstraintSwitch ( exprNode switchStmt)
+{
+ constraintList constraintsRequires;
+ constraintList constraintsEnsures;
+ constraintList lastRequires;
+ constraintList lastEnsures;
+
+ exprNode body;
+ exprNode switchExpr;
+
+ switchExpr = exprData_getPairA(switchStmt->edata);
+ body = exprData_getPairB(switchStmt->edata);
+
+ /*@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();
+ */
+
+ exprNode_doGenerateConstraintSwitch (switchExpr, body, &lastRequires, &lastEnsures, &constraintsRequires, &constraintsEnsures);
+
+ /*
+ 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_print( switchStmt->requiresConstraints),
+ constraintList_print( switchStmt->ensuresConstraints)
+ )
+ ) ));
+}
+
+static exprNode doSwitch (/*@returned@*/ 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))) ));
- ret = TRUE;
+ 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);
+
+ 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);
+
+ temp = p->falseEnsuresConstraints;
+ p->falseEnsuresConstraints = exprNode_traversFalseEnsuresConstraints(p);
+ constraintList_free(temp);
+
+ 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_print(e->requiresConstraints) ) ));
+
+ break;
+
+ case XPR_BLOCK:
+ exprNode_generateConstraints (exprData_getSingle (data));
+
+ constraintList_free(e->requiresConstraints);
+ e->requiresConstraints = constraintList_copy ( (exprData_getSingle (data))->requiresConstraints );
+
+ constraintList_free(e->ensuresConstraints);
+ e->ensuresConstraints = constraintList_copy ( (exprData_getSingle (data))->ensuresConstraints );
+ 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) )
+ {
+ return TRUE;
+ }
+ if (lltok_isAnd_Op (tok) )
+
+ {
+
+ return TRUE;
+ }
+ if (lltok_isOr_Op (tok) )
+ {
+ return TRUE;
+ }
+
+ if (lltok_isGt_Op (tok) )
+ {
+ return TRUE;
+ }
+ if (lltok_isLt_Op (tok) )
+ {
+ return TRUE;
+ }
+
+ if (lltok_isLe_Op (tok) )
+ {
+ return TRUE;
+ }
+
+ if (lltok_isGe_Op (tok) )
+ {
+ return TRUE;
+ }
+
+ return FALSE;
+
+}
+
+
+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, temp;
+ data = e->edata;
+
+ tok = exprData_getOpTok (data);
+ t1 = exprData_getOpA (data);
+ t2 = exprData_getOpB (data);
+
+ tempList = constraintList_undefined;
+
+ /* arithmetic tests */
+
+ if (lltok_isEq_Op (tok) )
+ {
+ cons = constraint_makeEnsureEqual (t1, t2, sequencePoint);
+ e->trueEnsuresConstraints = constraintList_add(e->trueEnsuresConstraints, cons);
+ }
+
+
+ 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) )
+ {
+ 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);
+ }
+
+ 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_isAnd_Op (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 lclint */
+ e->falseEnsuresConstraints = constraintList_addListFree (e->falseEnsuresConstraints, tempList);
+ }
+ else if (lltok_isOr_Op (tok) )
+ {
+ /* false ensures */
+ tempList = constraintList_copy (t1->falseEnsuresConstraints);
+ tempList = constraintList_addList (tempList, t2->falseEnsuresConstraints);
+ e->falseEnsuresConstraints = constraintList_addListFree(e->falseEnsuresConstraints, tempList);
+
+ /* true ensures: tens t1 or fens t1 and tens t2 */
+ tempList = constraintList_copy (t1->falseEnsuresConstraints);
+ tempList = constraintList_addList (tempList, t2->trueEnsuresConstraints);
+
+ 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) ) ));
+ }
+}
+
+void exprNode_exprTraverse (exprNode e, bool definatelv, bool definaterv, /*@observer@*/ /*@temp@*/ fileloc sequencePoint)
+{
+ exprNode t1, t2, fcn;
+ lltok tok;
+ bool handledExprNode;
+ exprData data;
+ constraint cons;
+
+ constraintList temp;
+
+ 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) )
+ {
+ return;
+ }
+
+ handledExprNode = TRUE;
+
+ data = e->edata;
+
+ switch (e->kind)
+ {
+ case XPR_WHILEPRED:
+ t1 = exprData_getSingle (data);
+ exprNode_exprTraverse (t1, definatelv, definaterv, sequencePoint);
+ e = exprNode_copyConstraints (e, t1);
+ break;
+
+ case XPR_FETCH:
+
+ if (definatelv )
+ {
+ 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 );
+ }
+
+ e->requiresConstraints = constraintList_add(e->requiresConstraints, cons);
+ cons = constraint_makeEnsureMaxReadAtLeast (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. */
+ 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 (tok.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 (tok.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) ) ) ) );
+
+ 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);
+ tok = (exprData_getUopTok (data));
+ exprNode_exprTraverse (t1, definatelv, definaterv, sequencePoint );
+ /*handle * pointer access */
+ if (lltok_isInc_Op (tok) )
+ {
+ DPRINTF(("doing ++(var)"));
+ t1 = exprData_getUopNode (data);
+ cons = constraint_makeMaxSetSideEffectPostIncrement (t1, sequencePoint );
+ e->ensuresConstraints = constraintList_add (e->ensuresConstraints, cons);
+ }
+ else if (lltok_isDec_Op (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)
+ {
+ cons = constraint_makeWriteSafeInt (t1, 0);
+ }
+ else
+ {
+ cons = constraint_makeReadSafeInt (t1, 0);
+ }
+ e->requiresConstraints = constraintList_add(e->requiresConstraints, cons);
+ }
+ else if (lltok_isNot_Op (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_POSTOP:
+
+ exprNode_exprTraverse (exprData_getUopNode (data), TRUE, definaterv, sequencePoint );
+
+ 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);
+ }
+ if (lltok_isDec_Op (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);
+
+ 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_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_printDetailed(e->ensuresConstraints) ) ));
+
+ DPRINTF((message ("Requires constraints for %s are %s", exprNode_unparse(e), constraintList_printDetailed(e->ensuresConstraints) ) ));
+
+ DPRINTF((message ("trueEnsures constraints for %s are %s", exprNode_unparse(e), constraintList_printDetailed(e->trueEnsuresConstraints) ) ));
+
+ DPRINTF((message ("falseEnsures constraints for %s are %s", exprNode_unparse(e), constraintList_printDetailed(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_FOR:
- // ret = message ("%s %s",
- exprNode_generateConstraints (exprData_getPairA (data));
- exprNode_generateConstraints (exprData_getPairB (data));
+ case XPR_FETCH:
+
+ 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;
- case XPR_FORPRED:
- // ret = message ("for (%s; %s; %s)",
- exprNode_generateConstraints (exprData_getTripleInit (data));
- exprNode_generateConstraints (exprData_getTripleTest (data));
- exprNode_generateConstraints (exprData_getTripleInc (data));
+ case XPR_INIT:
+ ret = constraintList_addListFree (ret,
+ exprNode_traversTrueEnsuresConstraints
+ (exprData_getInitNode (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:
break;
- case XPR_IF:
- DPRINTF(( "IF:") );
- DPRINTF ((exprNode_unparse(e) ) );
- // ret = message ("if (%s) %s",
- exprNode_generateConstraints (exprData_getPairA (data));
- exprNode_generateConstraints (exprData_getPairB (data));
- // e->constraints = constraintList_exprNodemerge (exprData_getPairA (data),exprData_getPairB(data));
+
+ case XPR_SIZEOF:
+
+ ret = constraintList_addListFree (ret,
+ exprNode_traversTrueEnsuresConstraints
+ (exprData_getSingle (data) ) );
+ break;
+
+ case XPR_CALL:
+ ret = constraintList_addListFree (ret,
+ exprNode_traversTrueEnsuresConstraints
+ (exprData_getFcn (data) ) );
+ /*@i11*/ /* exprNodeList_unparse (exprData_getArgs (data) ); */
break;
- case XPR_IFELSE:
- // ret = message ("if (%s) %s else %s",
- exprNode_generateConstraints (exprData_getTriplePred (data));
- exprNode_generateConstraints (exprData_getTripleTrue (data));
- exprNode_generateConstraints (exprData_getTripleFalse (data));
+ case XPR_RETURN:
+ ret = constraintList_addListFree (ret,
+ exprNode_traversTrueEnsuresConstraints
+ (exprData_getSingle (data) ) );
break;
- case XPR_WHILE:
- // 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) );
+
+ case XPR_NULLRETURN:
break;
-
- case XPR_WHILEPRED:
- // ret =
- // cstring_copy (
- exprNode_generateConstraints (exprData_getSingle (data));
+
+ case XPR_FACCESS:
+ ret = constraintList_addListFree (ret,
+ exprNode_traversTrueEnsuresConstraints
+ (exprData_getFieldNode (data) ) );
break;
-
- case XPR_DOWHILE:
- // ret = message ("do { %s } while (%s)",
- exprNode_generateConstraints (exprData_getPairB (data));
- exprNode_generateConstraints (exprData_getPairA (data));
+
+ case XPR_ARROW:
+ ret = constraintList_addListFree (ret,
+ exprNode_traversTrueEnsuresConstraints
+ (exprData_getFieldNode (data) ) );
+ break;
+
+ case XPR_STRINGLITERAL:
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;
+ case XPR_NUMLIT:
break;
+ case XPR_POSTOP:
- case XPR_STMT:
- case XPR_STMTLIST:
- return exprNode_stmtList (e);
- /*@notreached@*/
+ ret = constraintList_addListFree (ret,
+ exprNode_traversTrueEnsuresConstraints
+ (exprData_getUopNode (data) ) );
+ break;
+
+ case XPR_CAST:
+
+ ret = constraintList_addListFree (ret,
+ exprNode_traversTrueEnsuresConstraints
+ (exprData_getCastNode (data) ) );
break;
+
default:
- ret=FALSE;
+ break;
}
+
return ret;
}
-
-bool exprNode_exprTraverse (exprNode e, bool definatelv, bool definaterv, fileloc sequencePoint)
+constraintList exprNode_traversFalseEnsuresConstraints (exprNode e)
{
- exprNode t1, t2;
-
+ exprNode t1;
bool handledExprNode;
exprData data;
- constraint cons;
-
- DPRINTF((message ("exprNode_exprTraverset Analysising %s %s at", exprNode_unparse( e),
- fileloc_unparse(exprNode_getfileloc(e) ) ) ) );
+ constraintList ret;
- e->requiresConstraints = constraintList_new();
- e->ensuresConstraints = constraintList_new();
-
if (exprNode_handleError (e))
{
- return FALSE;
+ ret = constraintList_makeNew();
+ return ret;
}
+
+ ret = constraintList_copy (e->falseEnsuresConstraints );
handledExprNode = TRUE;
switch (e->kind)
{
+ case XPR_WHILEPRED:
+ t1 = exprData_getSingle (data);
+ ret = constraintList_addListFree ( ret,exprNode_traversFalseEnsuresConstraints (t1) );
+ break;
case XPR_FETCH:
-
- if (definatelv )
- {
- 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 );
- }
-
- 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);
-
- exprNode_exprTraverse (exprData_getPairA (data), FALSE, TRUE, sequencePoint);
- exprNode_exprTraverse (exprData_getPairB (data), FALSE, TRUE, sequencePoint);
- /*@i325 Should check which is array/index. */
+ ret = constraintList_addListFree (ret,
+ exprNode_traversFalseEnsuresConstraints
+ (exprData_getPairA (data) ) );
+
+ ret = constraintList_addListFree (ret,
+ exprNode_traversFalseEnsuresConstraints
+ (exprData_getPairB (data) ) );
break;
- case XPR_PREOP:
- t1 = exprData_getUopNode(data);
- lltok_unparse (exprData_getUopTok (data));
- exprNode_exprTraverse (exprData_getUopNode (data), definatelv, definaterv, sequencePoint );
- /*handle * pointer access */
-
- /*@ i 325 do ++ and -- */
- if (lltok_isMult( exprData_getUopTok (data) ) )
- {
- if (definatelv)
- {
- cons = constraint_makeWriteSafeInt (t1, 0);
- }
- else
- {
- cons = constraint_makeReadSafeInt (t1, 0);
- }
- e->requiresConstraints = constraintList_add(e->requiresConstraints, cons);
- }
- if (lltok_isInc_Op (exprData_getUopTok (data) ) )
- {
- // cons = constraint_makeSideEffectPostIncrement (t1, sequencePoint);
- // e->ensuresConstraints = constraintList_add(e->requiresConstraints, cons);
- }
+ case XPR_PREOP:
+
+ ret = constraintList_addListFree (ret,
+ exprNode_traversFalseEnsuresConstraints
+ (exprData_getUopNode (data) ) );
break;
case XPR_PARENS:
- exprNode_exprTraverse (exprData_getUopNode (e->edata), definatelv, definaterv, sequencePoint);
- // e->constraints = constraintList_exprNodemerge (exprData_getUopNode (e->edata), exprNode_undefined);
+ 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:
- exprNode_exprTraverse (exprData_getOpA (data), TRUE, definaterv, sequencePoint );
- lltok_unparse (exprData_getOpTok (data));
- exprNode_exprTraverse (exprData_getOpB (data), definatelv, TRUE, sequencePoint );
- // e->constraints = constraintList_exprNodemerge (exprData_getOpA (data), exprData_getOpB (data) );
- break;
+ ret = constraintList_addListFree (ret,
+ exprNode_traversFalseEnsuresConstraints
+ (exprData_getOpA (data) ) );
+
+ ret = constraintList_addListFree (ret,
+ exprNode_traversFalseEnsuresConstraints
+ (exprData_getOpB (data) ) );
+ break;
case XPR_OP:
- exprNode_exprTraverse (exprData_getOpA (data), definatelv, definaterv, sequencePoint );
- lltok_unparse (exprData_getOpTok (data));
- exprNode_exprTraverse (exprData_getOpB (data), definatelv, definaterv, sequencePoint );
-
- // e->constraints = constraintList_exprNodemerge (exprData_getOpA (data), exprData_getOpB (data));
- break;
+ ret = constraintList_addListFree (ret,
+ exprNode_traversFalseEnsuresConstraints
+ (exprData_getOpA (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:
- exprNode_exprTraverse (exprData_getSingle (data), definatelv, definaterv, sequencePoint );
- // e->constraints = constraintList_exprNodemerge (exprData_getSingle (e->edata), exprNode_undefined);
- break;
+
+ ret = constraintList_addListFree (ret,
+ exprNode_traversFalseEnsuresConstraints
+ (exprData_getSingle (data) ) );
+ break;
case XPR_CALL:
- exprNode_exprTraverse (exprData_getFcn (data), definatelv, definaterv, sequencePoint );
- exprNodeList_unparse (exprData_getArgs (data) );
- // e->constraints = constraintList_add (e->constraints, constraint_create (e,exprNode_undefined, GT, CALLSAFE ) );
+ ret = constraintList_addListFree (ret,
+ exprNode_traversFalseEnsuresConstraints
+ (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_traversFalseEnsuresConstraints
+ (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_traversFalseEnsuresConstraints
+ (exprData_getFieldNode (data) ) );
break;
-
+
case XPR_ARROW:
- exprNode_exprTraverse (exprData_getFieldNode (data), definatelv, definaterv, sequencePoint );
- 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:
-
- exprNode_exprTraverse (exprData_getUopNode (data), TRUE, definaterv, sequencePoint );
- lltok_unparse (exprData_getUopTok (data));
- if (lltok_isInc_Op (exprData_getUopTok (data) ) )
- {
- TPRINTF(("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_traversFalseEnsuresConstraints
+ (exprData_getUopNode (data) ) );
+ break;
+
+ case XPR_CAST:
+
+ ret = constraintList_addListFree (ret,
+ exprNode_traversFalseEnsuresConstraints
+ (exprData_getCastNode (data) ) );
break;
+
default:
- handledExprNode = FALSE;
+ break;
}
- return handledExprNode;
+ return ret;
}
+
/* 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;
- ret = constraintList_copy (e->requiresConstraints );
+
if (exprNode_handleError (e))
{
+ ret = constraintList_makeNew();
return ret;
}
-
+ 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) ) );
- ret = constraintList_addList (ret,
+ ret = constraintList_addListFree (ret,
exprNode_traversRequiresConstraints
(exprData_getPairB (data) ) );
break;
case XPR_PREOP:
- ret = constraintList_addList (ret,
+ ret = constraintList_addListFree (ret,
exprNode_traversRequiresConstraints
(exprData_getUopNode (data) ) );
break;
case XPR_PARENS:
- ret = constraintList_addList (ret, exprNode_traversRequiresConstraints
+ 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) ) );
- ret = constraintList_addList (ret,
+ ret = constraintList_addListFree (ret,
exprNode_traversRequiresConstraints
(exprData_getOpB (data) ) );
break;
case XPR_OP:
- ret = constraintList_addList (ret,
+ ret = constraintList_addListFree (ret,
exprNode_traversRequiresConstraints
(exprData_getOpA (data) ) );
- ret = constraintList_addList (ret,
+ ret = constraintList_addListFree (ret,
exprNode_traversRequiresConstraints
(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) ) );
break;
case XPR_CALL:
- ret = constraintList_addList (ret,
+ ret = constraintList_addListFree (ret,
exprNode_traversRequiresConstraints
(exprData_getFcn (data) ) );
- /*@i11*/ // exprNodeList_unparse (exprData_getArgs (data) );
- break;
+ /*@i11*/ /* exprNodeList_unparse (exprData_getArgs (data) ); */
+ break;
case XPR_RETURN:
- ret = constraintList_addList (ret,
+ ret = constraintList_addListFree (ret,
exprNode_traversRequiresConstraints
(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) ) );
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;
- ret = constraintList_copy (e->ensuresConstraints );
+
+
if (exprNode_handleError (e))
{
+ ret = constraintList_makeNew();
return ret;
}
+ ret = constraintList_copy (e->ensuresConstraints );
handledExprNode = TRUE;
data = e->edata;
switch (e->kind)
{
+ case XPR_WHILEPRED:
+ t1 = exprData_getSingle (data);
+ ret = constraintList_addListFree ( ret,exprNode_traversEnsuresConstraints (t1) );
+ break;
case XPR_FETCH:
- ret = constraintList_addList (ret,
+ ret = constraintList_addListFree (ret,
exprNode_traversEnsuresConstraints
(exprData_getPairA (data) ) );
- ret = constraintList_addList (ret,
+ ret = constraintList_addListFree (ret,
exprNode_traversEnsuresConstraints
(exprData_getPairB (data) ) );
break;
case XPR_PREOP:
- ret = constraintList_addList (ret,
+ ret = constraintList_addListFree (ret,
exprNode_traversEnsuresConstraints
(exprData_getUopNode (data) ) );
break;
case XPR_PARENS:
- ret = constraintList_addList (ret, exprNode_traversEnsuresConstraints
+ 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,
+ ret = constraintList_addListFree (ret,
exprNode_traversEnsuresConstraints
(exprData_getOpA (data) ) );
- ret = constraintList_addList (ret,
+ ret = constraintList_addListFree (ret,
exprNode_traversEnsuresConstraints
(exprData_getOpB (data) ) );
break;
case XPR_OP:
- ret = constraintList_addList (ret,
+ ret = constraintList_addListFree (ret,
exprNode_traversEnsuresConstraints
(exprData_getOpA (data) ) );
- ret = constraintList_addList (ret,
+ ret = constraintList_addListFree (ret,
exprNode_traversEnsuresConstraints
(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_traversEnsuresConstraints
(exprData_getSingle (data) ) );
break;
case XPR_CALL:
- ret = constraintList_addList (ret,
+ ret = constraintList_addListFree (ret,
exprNode_traversEnsuresConstraints
(exprData_getFcn (data) ) );
- /*@i11*/ // exprNodeList_unparse (exprData_getArgs (data) );
- break;
+ /*@i11*/ /* exprNodeList_unparse (exprData_getArgs (data) ); */
+ break;
case XPR_RETURN:
- ret = constraintList_addList (ret,
+ 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,
+ 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 (
+
+ DPRINTF( (message (
"exprnode_traversEnsuresConstraints call for %s with constraintList of is returning %s",
exprNode_unparse (e),
- // constraintList_print(e->ensuresConstraints),
- constraintList_print(ret)
- )
- ));
+ constraintList_print(ret))));
-
return ret;
}
+/*drl moved out of constraintResolve.c 07-02-001 */
+void checkArgumentList (/*@out@*/ exprNode temp, exprNodeList arglist, fileloc sequencePoint)
+{
+ temp->requiresConstraints = constraintList_makeNew();
+ temp->ensuresConstraints = constraintList_makeNew();
+ temp->trueEnsuresConstraints = constraintList_makeNew();
+ temp->falseEnsuresConstraints = constraintList_makeNew();
+
+ exprNodeList_elements (arglist, el)
+ {
+ constraintList temp2;
+ 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;
+}
+
+
+/*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();
+ }
+ DPRINTF (( message("Done checkCall\n") ));
+ DPRINTF (( message("Returning list %q ", constraintList_printDetailed(preconditions) ) ));
+ return preconditions;
+}
andersk / splint.git / blobdiff