IdIterator.cs

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using System.ComponentModel;
using System.Xml.XPath;
 
namespace System.Xml.Xsl.Runtime;
 
[EditorBrowsable(EditorBrowsableState.Never)]
public struct IdIterator
{
    private XPathNavigator _navCurrent;
 
    private string[] _idrefs;
 
    private int _idx;
 
    public XPathNavigator Current => _navCurrent;
 
    public void Create(XPathNavigator context, string value)
    {
        _navCurrent = XmlQueryRuntime.SyncToNavigator(_navCurrent, context);
        _idrefs = XmlConvert.SplitString(value);
        _idx = -1;
    }
 
    public bool MoveNext()
    {
        do
        {
            _idx++;
            if (_idx >= _idrefs.Length)
            {
                return false;
            }
        }
        while (!_navCurrent.MoveToId(_idrefs[_idx]));
        return true;
    }
}