public bool TryAs <T>(out HtmlTree <T> tree) where T : HtmlNode
{
var node = Node as T;
tree = node != null
? new HtmlTree <T>(node, _ancestorStack)
: default(HtmlTree <T>);
return(node != null);
}
HtmlTree <HtmlNode>?GetSibling(int offset, Func <int, int, bool> predicate)
{
if (!HasParent)
{
return(null);
}
var siblings = Parent.Value.Node.ChildNodes;
var i = siblings.IndexOf(Node);
return(predicate(i + offset, siblings.Count)
? HtmlTree.Create(siblings[i + offset], AncestorStack)
: (HtmlTree <HtmlNode>?)null);
}
public HtmlTree <T> Cast <T>() where T : HtmlNode => HtmlTree.Create((T)(HtmlNode)Node, _ancestorStack);