QNameDataContract.cs

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using System.Diagnostics.CodeAnalysis;
using System.Xml;
 
namespace System.Runtime.Serialization;
 
internal sealed class QNameDataContract : PrimitiveDataContract
{
    internal override string WriteMethodName => "WriteQName";
 
    internal override string ReadMethodName => "ReadElementContentAsQName";
 
    internal override bool IsPrimitive => false;
 
    public QNameDataContract()
        : base(typeof(XmlQualifiedName), DictionaryGlobals.QNameLocalName, DictionaryGlobals.SchemaNamespace)
    {
    }
 
    [RequiresUnreferencedCode("Data Contract Serialization and Deserialization might require types that cannot be statically analyzed. Make sure all of the required types are preserved.")]
    public override void WriteXmlValue(XmlWriterDelegator writer, object obj, XmlObjectSerializerWriteContext context)
    {
        writer.WriteQName((XmlQualifiedName)obj);
    }
 
    [RequiresUnreferencedCode("Data Contract Serialization and Deserialization might require types that cannot be statically analyzed. Make sure all of the required types are preserved.")]
    public override object ReadXmlValue(XmlReaderDelegator reader, XmlObjectSerializerReadContext context)
    {
        if (context == null)
        {
            if (!TryReadNullAtTopLevel(reader))
            {
                return reader.ReadElementContentAsQName();
            }
            return null;
        }
        return HandleReadValue(reader.ReadElementContentAsQName(), context);
    }
 
    [RequiresUnreferencedCode("Data Contract Serialization and Deserialization might require types that cannot be statically analyzed. Make sure all of the required types are preserved.")]
    public override void WriteXmlElement(XmlWriterDelegator writer, object obj, XmlObjectSerializerWriteContext context, XmlDictionaryString name, XmlDictionaryString ns)
    {
        context.WriteQName(writer, (XmlQualifiedName)obj, name, ns);
    }
 
    internal override void WriteRootElement(XmlWriterDelegator writer, XmlDictionaryString name, XmlDictionaryString ns)
    {
        if (ns == DictionaryGlobals.SerializationNamespace)
        {
            writer.WriteStartElement("z", name, ns);
        }
        else if (ns != null && ns.Value != null && ns.Value.Length > 0)
        {
            writer.WriteStartElement("q", name, ns);
        }
        else
        {
            writer.WriteStartElement(name, ns);
        }
    }
}