public static T Decode <T>(Unpacker unpacker, Func <string, Type> typeFinder, Func <Type, Unpacker, T> unpacking)
{
if (!unpacker.IsArrayHeader || UnpackHelpers.GetItemsCount(unpacker) != 2)
{
throw SerializationExceptions.NewUnknownTypeEmbedding();
}
using (var subTreeUnpacker = unpacker.ReadSubtree())
{
string typeCode;
if (!subTreeUnpacker.ReadString(out typeCode))
{
SerializationExceptions.ThrowUnexpectedEndOfStream(subTreeUnpacker);
}
var type = typeFinder(typeCode);
if (!subTreeUnpacker.Read())
{
SerializationExceptions.ThrowUnexpectedEndOfStream(subTreeUnpacker);
}
return(unpacking(type, subTreeUnpacker));
}
}
public static async Task <T> DecodeAsync <T>(Unpacker unpacker, Func <string, Type> typeFinder, Func <Type, Unpacker, CancellationToken, Task <object> > unpackingAsync, CancellationToken cancellationToken)
{
if (!unpacker.IsArrayHeader || UnpackHelpers.GetItemsCount(unpacker) != 2)
{
throw SerializationExceptions.NewUnknownTypeEmbedding();
}
using (var subTreeUnpacker = unpacker.ReadSubtree())
{
var typeCode = await subTreeUnpacker.ReadStringAsync(cancellationToken).ConfigureAwait(false);
if (!typeCode.Success)
{
SerializationExceptions.ThrowUnexpectedEndOfStream(subTreeUnpacker);
}
var type = typeFinder(typeCode.Value);
if (!await subTreeUnpacker.ReadAsync(cancellationToken).ConfigureAwait(false))
{
SerializationExceptions.ThrowUnexpectedEndOfStream(subTreeUnpacker);
}
return((T) await unpackingAsync(type, subTreeUnpacker, cancellationToken).ConfigureAwait(false));
}
}
protected internal override T UnpackFromCore(Unpacker unpacker)
{
// It is not reasonable to identify other forms.
if (!unpacker.IsArrayHeader || UnpackHelpers.GetItemsCount(unpacker) != 3)
{
throw SerializationExceptions.NewUnknownTypeEmbedding();
}
using (var subTreeUnpacker = unpacker.ReadSubtree())
{
if (!subTreeUnpacker.Read())
{
throw SerializationExceptions.NewUnexpectedEndOfStream();
}
var header = subTreeUnpacker.LastReadData.AsMessagePackExtendedTypeObject();
if (header.TypeCode != this.OwnerContext.TypeEmbeddingSettings.TypeEmbeddingIdentifier)
{
throw new SerializationException(
String.Format(CultureInfo.CurrentCulture, "Unknown extension type {0}.", header.TypeCode)
);
}
if (header.Body.Length != TypeInfoEncodingBytes.RawCompressed.Length ||
header.Body[0] != TypeInfoEncodingBytes.RawCompressed[0])
{
throw new SerializationException("Unknown type info encoding type.");
}
if (!subTreeUnpacker.Read())
{
throw SerializationExceptions.NewUnexpectedEndOfStream();
}
var objectType = TypeInfoEncoder.Decode(subTreeUnpacker);
if (!subTreeUnpacker.Read())
{
throw SerializationExceptions.NewUnexpectedEndOfStream();
}
return(( T )this.GetActualTypeSerializer(objectType).UnpackFrom(subTreeUnpacker));
}
}
