internal static void AppendExtendValue(TypeModel model, IExtensible instance, int tag, DataFormat format, object value)
{
#if FEAT_IKVM
throw new NotSupportedException();
#else
if (instance == null)
{
throw new ArgumentNullException("instance");
}
if (value == null)
{
throw new ArgumentNullException("value");
}
// TODO
//model.CheckTagNotInUse(tag);
// obtain the extension object and prepare to write
IExtension extn = instance.GetExtensionObject(true);
if (extn == null)
{
throw new InvalidOperationException("No extension object available; appended data would be lost.");
}
bool commit = false;
Stream stream = extn.BeginAppend();
try {
using (ProtoWriter writer = new ProtoWriter(stream, model, null)) {
model.TrySerializeAuxiliaryType(writer, null, format, tag, value, false);
writer.Close();
}
commit = true;
}
finally {
extn.EndAppend(stream, commit);
}
#endif
}