XPathAncestorIterator.cs

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using System.Xml.XPath;
 
namespace MS.Internal.Xml.XPath;
 
internal sealed class XPathAncestorIterator : XPathAxisIterator
{
    public XPathAncestorIterator(XPathNavigator nav, XPathNodeType type, bool matchSelf)
        : base(nav, type, matchSelf)
    {
    }
 
    public XPathAncestorIterator(XPathNavigator nav, string name, string namespaceURI, bool matchSelf)
        : base(nav, name, namespaceURI, matchSelf)
    {
    }
 
    public XPathAncestorIterator(XPathAncestorIterator other)
        : base(other)
    {
    }
 
    public override bool MoveNext()
    {
        if (first)
        {
            first = false;
            if (matchSelf && Matches)
            {
                position = 1;
                return true;
            }
        }
        while (nav.MoveToParent())
        {
            if (Matches)
            {
                position++;
                return true;
            }
        }
        return false;
    }
 
    public override XPathNodeIterator Clone()
    {
        return new XPathAncestorIterator(this);
    }
}