internal static void WriteHeaderCore(int fieldNumber, WireType wireType, ProtoWriter writer, ref State state)
{
uint header = (((uint)fieldNumber) << 3)
| (((uint)wireType) & 7);
int bytes = writer.ImplWriteVarint32(ref state, header);
writer.Advance(bytes);
}
/// <summary>
/// Copies any extension data stored for the instance to the underlying stream
/// </summary>
public static void AppendExtensionData(IExtensible instance, ProtoWriter writer, ref State state)
{
if (instance == null)
{
throw new ArgumentNullException(nameof(instance));
}
if (writer == null)
{
throw new ArgumentNullException(nameof(writer));
}
// we expect the writer to be raw here; the extension data will have the
// header detail, so we'll copy it implicitly
if (writer.WireType != WireType.None)
{
throw CreateException(writer);
}
IExtension extn = instance.GetExtensionObject(false);
if (extn != null)
{
// unusually we *don't* want "using" here; the "finally" does that, with
// the extension object being responsible for disposal etc
Stream source = extn.BeginQuery();
try
{
if (ProtoReader.TryConsumeSegmentRespectingPosition(source, out var data, ProtoReader.TO_EOF))
{
writer.ImplWriteBytes(ref state, data.Array, data.Offset, data.Count);
writer.Advance(data.Count);
}
else
{
writer.ImplCopyRawFromStream(ref state, source);
}
}
