public static string UnWrap(CharSequence csq)
{
if (csq == null)
{
throw new ArgumentException();
}
if (csq is CharSequenceProxy)
{
CharSequenceProxy proxy = (CharSequenceProxy)csq;
StringProxy sp = proxy.Proxy as StringProxy;
if (sp == null)
{
throw new ArgumentException();
}
return(sp.ToString());
}
else if (csq is StringProxy)
{
StringProxy sp = (StringProxy)csq;
return(sp.ToString());
}
else
{
throw new ArgumentException();
}
}
public CharSequence SubSequence(int start, int end)
{
return(CharSequenceProxy.Wrap(_str.Substring(start, end - start)));
}