ObjectNull.cs

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namespace System.Runtime.Serialization.Formatters.Binary;
 
internal sealed class ObjectNull : IStreamable
{
    internal int _nullCount;
 
    internal ObjectNull()
    {
    }
 
    internal void SetNullCount(int nullCount)
    {
        _nullCount = nullCount;
    }
 
    public void Write(BinaryFormatterWriter output)
    {
        if (_nullCount == 1)
        {
            output.WriteByte(10);
        }
        else if (_nullCount < 256)
        {
            output.WriteByte(13);
            output.WriteByte((byte)_nullCount);
        }
        else
        {
            output.WriteByte(14);
            output.WriteInt32(_nullCount);
        }
    }
 
    public void Read(BinaryParser input, BinaryHeaderEnum binaryHeaderEnum)
    {
        switch (binaryHeaderEnum)
        {
        case BinaryHeaderEnum.ObjectNull:
            _nullCount = 1;
            break;
        case BinaryHeaderEnum.ObjectNullMultiple256:
            _nullCount = input.ReadByte();
            break;
        case BinaryHeaderEnum.ObjectNullMultiple:
            _nullCount = input.ReadInt32();
            break;
        case BinaryHeaderEnum.MessageEnd:
        case BinaryHeaderEnum.Assembly:
            break;
        }
    }
}