XmlEntity.cs

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namespace System.Xml;
 
public class XmlEntity : XmlNode
{
    private readonly string _publicId;
 
    private readonly string _systemId;
 
    private readonly string _notationName;
 
    private readonly string _name;
 
    private string _baseURI = string.Empty;
 
    private XmlLinkedNode _lastChild;
 
    private bool _childrenFoliating;
 
    public override bool IsReadOnly => true;
 
    public override string Name => _name;
 
    public override string LocalName => _name;
 
    public override string InnerText
    {
        get
        {
            return base.InnerText;
        }
        set
        {
            throw new InvalidOperationException(System.SR.Xdom_Ent_Innertext);
        }
    }
 
    internal override bool IsContainer => true;
 
    internal override XmlLinkedNode? LastNode
    {
        get
        {
            if (_lastChild == null && !_childrenFoliating)
            {
                _childrenFoliating = true;
                XmlLoader xmlLoader = new XmlLoader();
                xmlLoader.ExpandEntity(this);
            }
            return _lastChild;
        }
        set
        {
            _lastChild = value;
        }
    }
 
    public override XmlNodeType NodeType => XmlNodeType.Entity;
 
    public string? PublicId => _publicId;
 
    public string? SystemId => _systemId;
 
    public string? NotationName => _notationName;
 
    public override string OuterXml => string.Empty;
 
    public override string InnerXml
    {
        get
        {
            return string.Empty;
        }
        set
        {
            throw new InvalidOperationException(System.SR.Xdom_Set_InnerXml);
        }
    }
 
    public override string BaseURI => _baseURI;
 
    internal XmlEntity(string name, string strdata, string publicId, string systemId, string notationName, XmlDocument doc)
        : base(doc)
    {
        _name = doc.NameTable.Add(name);
        _publicId = publicId;
        _systemId = systemId;
        _notationName = notationName;
        _childrenFoliating = false;
    }
 
    public override XmlNode CloneNode(bool deep)
    {
        throw new InvalidOperationException(System.SR.Xdom_Node_Cloning);
    }
 
    internal override bool IsValidChildType(XmlNodeType type)
    {
        if (type != XmlNodeType.Text && type != XmlNodeType.Element && type != XmlNodeType.ProcessingInstruction && type != XmlNodeType.Comment && type != XmlNodeType.CDATA && type != XmlNodeType.Whitespace && type != XmlNodeType.SignificantWhitespace)
        {
            return type == XmlNodeType.EntityReference;
        }
        return true;
    }
 
    public override void WriteTo(XmlWriter w)
    {
    }
 
    public override void WriteContentTo(XmlWriter w)
    {
    }
 
    internal void SetBaseURI(string inBaseURI)
    {
        _baseURI = inBaseURI;
    }
}