private IADomain RecAssignTransfer(RecAssignStmt recAssignStmt, IADomain domain)
{
var newDomain = CopyDomain(domain);
if (domain.IsBottom())
{
return(newDomain);
}
for (int i = 0; i < recAssignStmt.Left.Children.Count; i++)
{
var ident = recAssignStmt.Left.Children[i];
var expr = recAssignStmt.Right[i];
var newInterval = IAUtil.Arithmetic(expr, domain);
if (newInterval.IsBottom)
{
return(Bottom().GetDomain());
}
newDomain[ident] = newInterval.ToIntervalK(_program);
}
return(newDomain);
}
private IADomain ReadTransfer(ReadStmt readStmt, IADomain domain)
{
var newDomain = CopyDomain(domain);
if (domain.IsBottom())
{
return(newDomain);
}
var ident = readStmt.Left switch
{
VarAccess varAccess => varAccess.Left,
ArrayAccess arrayAccess => arrayAccess.Left,
RecordAccess recordAccess => recordAccess.Right,
};
if (readStmt.Left is ArrayAccess)
{
var ra = readStmt.Left as ArrayAccess;
var indexInterval = IAUtil.Arithmetic(ra.Right, domain);
if (indexInterval.IsBottom)
{
return(Bottom().GetDomain());
}
}
newDomain[ident] = new Interval(ExtendedZ.NegativeInfinity(), ExtendedZ.PositiveInfinity()).ToIntervalK(_program);
return(newDomain);
}
private IADomain AssignTransfer(AssignStmt assignStmt, IADomain domain)
{
var newDomain = CopyDomain(domain);
if (domain.IsBottom())
{
return(newDomain);
}
var ident = assignStmt.Left switch
{
VarAccess varAccess => varAccess.Left,
ArrayAccess arrayAccess => arrayAccess.Left,
RecordAccess recordAccess => recordAccess.Right,
};
var newValue = assignStmt.Left switch
{
VarAccess varAccess => IAUtil.Arithmetic(assignStmt.Right, domain),
RecordAccess recordAccess => IAUtil.Arithmetic(assignStmt.Right, domain),
ArrayAccess arrayAccess => IAUtil.Arithmetic(assignStmt.Right, domain)
.Join(domain[ident]),
//.Join(IAUtil.Arithmetic(arrayAccess.Right, domain)),
};
if (assignStmt.Left is ArrayAccess)
{
var ra = assignStmt.Left as ArrayAccess;
var indexInterval = IAUtil.Arithmetic(ra.Right, domain);
if (indexInterval.IsBottom)
{
return(Bottom().GetDomain());
}
var arrayIndices = new Interval(new ExtendedZ(0), new ExtendedZ(ra.Left.Size - 1));
var meet = indexInterval.Meet(arrayIndices);
if (indexInterval.Meet(arrayIndices).IsBottom)
{
return(Bottom().GetDomain());
}
}
if (newValue.IsBottom)
{
return(Bottom().GetDomain());
}
newDomain[ident] = newValue.ToIntervalK(_program);
return(newDomain);
}