// Creates a clone of the state.
public Object Clone()
{
List <Hashtable> newApplicables = new List <Hashtable>();
foreach (Hashtable applicable in applicables)
{
newApplicables.Add((Hashtable)applicable.Clone());
}
Operator newLastStep = new Operator();
if (lastStep != null)
{
newLastStep = lastStep.Clone() as Operator;
}
Operator newNextStep = new Operator();
if (nextStep != null)
{
newNextStep = nextStep.Clone() as Operator;
}
return(new State((Hashtable)table.Clone(), newLastStep, newNextStep, newApplicables));
}
// Create a clone of the causal link.
public Object Clone()
{
List <IOperator> newSpan = new List <IOperator>();
foreach (Operator op in Span)
{
newSpan.Add(op.Clone() as Operator);
}
return(new CausalLink((Predicate)predicate.Clone(), (Operator)head.Clone(), (Operator)tail.Clone(), newSpan));
}