private AnyTreeXPathNavigator(AnyTreeXPathNavigator other)
{
_sourceElementNode = other._sourceElementNode;
_sourceAttributeNode = other._sourceAttributeNode;
_nodeType = other._nodeType;
_nameTableStub = other._nameTableStub;
}
public override bool MoveToParent()
{
if (_sourceElementNode.Parent != null)
{
_sourceElementNode = _sourceElementNode.Parent;
_nodeType = XPathNodeType.Element;
return(true);
}
return(false);
}
private static XPathNodeType GetNodeType(AnyElementNode node)
{
if (node.Element is TextXPathElement)
{
return(XPathNodeType.Text);
}
else
{
return(XPathNodeType.Element);
}
}
public override bool MoveToFirstChild()
{
if (_nodeType == XPathNodeType.Text)
{
return(false);
}
var childrenEnumerable = _sourceElementNode.Element.GetChildren();
childrenEnumerable = AppendTextNode(childrenEnumerable, _sourceElementNode);
var children = new CachedEnumerable <IXPathElement>(childrenEnumerable);
if (children.ReadUntil(0))
{
var childNode = new AnyElementNode(_sourceElementNode, children, 0);
SetElementNode(childNode);
return(true);
}
return(false);
}
private IEnumerable <IXPathElement> AppendTextNode(IEnumerable <IXPathElement> childrenEnumerable, AnyElementNode elementNode)
{
if (elementNode.Element is ITextProvider)
{
ITextProvider textProvider = elementNode.Element as ITextProvider;
if (textProvider.HasText)
{
childrenEnumerable = childrenEnumerable.Concat(new[] { new TextXPathElement(textProvider) });
}
}
return(childrenEnumerable);
}
private void SetElementNode(AnyElementNode node)
{
_sourceElementNode = node;
_nodeType = GetNodeType(_sourceElementNode);
}
public AnyTreeXPathNavigator(params IXPathElement[] root)
{
_sourceElementNode = new AnyElementNode(null, new CachedEnumerable <IXPathElement>(root), 0);
_nodeType = XPathNodeType.Root;
}