public XPath_Bracket(XPathString path)
{
string text = path.Format;
XPath = path.Text.TrimStart('[').TrimEnd(']');
text = text.TrimStart('[').TrimEnd(']');
AndOr = text.Contains(" and ");
// need new XPathString() that has brackets removed.
XPathString[] paths = new XPathString(true, text, path.Values)
.Split(new string[] { " and ", " or " }, StringSplitOptions.RemoveEmptyEntries, true);
Parts = paths.Select(s => new XPath_Part(s)).ToArray();
}