public NameInfo Lookup(ErrorCollector collector, IEnumerable <string> names)
{
IEnumerator <string> enumerator = names.GetEnumerator();
if (!enumerator.MoveNext())
{
throw new ArgumentOutOfRangeException("List of names cannot be empty.");
}
if (Children.ContainsKey(enumerator.Current))
{
if (Children[enumerator.Current] == null)
{
collector.ReportForbiddenNameAccess(this, enumerator.Current);
return(new JunkInfo());
}
return(Children[enumerator.Current].Lookup(collector, enumerator));
}
if (ForceBack)
{
Parent.Lookup(collector, names);
}
if (Parent != null && Parent.HasName(enumerator.Current))
{
return(Lookback(enumerator.Current).Lookup(collector, enumerator));
}
var info = new OpenNameInfo(this, enumerator.Current);
Children[enumerator.Current] = info;
return(info.Lookup(collector, enumerator));
}