XText.cs

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using System.Text;
using System.Threading;
using System.Threading.Tasks;
 
namespace System.Xml.Linq;
 
public class XText : XNode
{
    internal string text;
 
    public override XmlNodeType NodeType => XmlNodeType.Text;
 
    public string Value
    {
        get
        {
            return text;
        }
        set
        {
            if (value == null)
            {
                throw new ArgumentNullException("value");
            }
            bool flag = NotifyChanging(this, XObjectChangeEventArgs.Value);
            text = value;
            if (flag)
            {
                NotifyChanged(this, XObjectChangeEventArgs.Value);
            }
        }
    }
 
    public XText(string value)
    {
        if (value == null)
        {
            throw new ArgumentNullException("value");
        }
        text = value;
    }
 
    public XText(XText other)
    {
        if (other == null)
        {
            throw new ArgumentNullException("other");
        }
        text = other.text;
    }
 
    internal XText(XmlReader r)
    {
        text = r.Value;
        r.Read();
    }
 
    public override void WriteTo(XmlWriter writer)
    {
        if (writer == null)
        {
            throw new ArgumentNullException("writer");
        }
        if (parent is XDocument)
        {
            writer.WriteWhitespace(text);
        }
        else
        {
            writer.WriteString(text);
        }
    }
 
    public override Task WriteToAsync(XmlWriter writer, CancellationToken cancellationToken)
    {
        if (writer == null)
        {
            throw new ArgumentNullException("writer");
        }
        if (cancellationToken.IsCancellationRequested)
        {
            return Task.FromCanceled(cancellationToken);
        }
        if (!(parent is XDocument))
        {
            return writer.WriteStringAsync(text);
        }
        return writer.WriteWhitespaceAsync(text);
    }
 
    internal override void AppendText(StringBuilder sb)
    {
        sb.Append(text);
    }
 
    internal override XNode CloneNode()
    {
        return new XText(this);
    }
 
    internal override bool DeepEquals(XNode node)
    {
        if (node != null && NodeType == node.NodeType)
        {
            return text == ((XText)node).text;
        }
        return false;
    }
 
    internal override int GetDeepHashCode()
    {
        return text.GetHashCode();
    }
}