public static byte[] ReadLengthEncodedByteArray(this Stream self, DeserializerSession session)
{
var length = self.ReadInt32(session);
var buffer = new byte[length];
self.Read(buffer, 0, length);
return buffer;
}
public static int ReadUInt16(this Stream self, DeserializerSession session)
{
var buffer = session.GetBuffer(2);
self.Read(buffer, 0, 2);
var res = BitConverter.ToUInt16(buffer, 0);
return res;
}
public object Deserialize(Stream stream)
{
var session = new DeserializerSession(this);
var s = GetDeserializerByManifest(stream, session);
return(s.ReadValue(stream, session));
}
/// <summary>
/// 从指定文件反序列化对象
/// </summary>
/// <param name="filePath"></param>
/// <param name="session"></param>
/// <returns></returns>
public object Deserialize([NotNull] string filePath, DeserializerSession session)
{
using (var stream = new FileStream(filePath, FileMode.Open, FileAccess.Read, FileShare.Read))
{
return(Deserialize(stream, session));
}
}
public T Deserialize <T>([NotNull] Stream stream)
{
DeserializerSession session = GetDeserializerSession();
var s = GetDeserializerByManifest(stream, session);
return((T)s.ReadValue(stream, session));
}
public static object ReadObject(this Stream stream, DeserializerSession session)
{
var s = session.Serializer.GetDeserializerByManifest(stream, session);
var value = s.ReadValue(stream, session); //read the element value
return(value);
}
public static byte[] ReadLengthEncodedByteArray(this Stream self, DeserializerSession session)
{
var length = self.ReadInt32(session);
var buffer = new byte[length];
self.Read(buffer, 0, length);
return(buffer);
}
public static int ReadUInt16(this Stream self, DeserializerSession session)
{
var buffer = session.GetBuffer(2);
self.Read(buffer, 0, 2);
var res = BitConverter.ToUInt16(buffer, 0);
return(res);
}
public ValueSerializer GetDeserializerByManifest([NotNull] Stream stream, [NotNull] DeserializerSession session)
{
var first = stream.ReadByte();
if (first <= 250)
{
return(_deserializerLookup[first]);
}
switch (first)
{
case ConsistentArraySerializer.Manifest:
return(ConsistentArraySerializer.Instance);
case ObjectReferenceSerializer.Manifest:
return(ObjectReferenceSerializer.Instance);
case ObjectSerializer.ManifestFull:
{
var type = TypeEx.GetTypeFromManifestFull(stream, session);
return(GetCustomDeserializer(type));
}
case ObjectSerializer.ManifestVersion:
{
var type = TypeEx.GetTypeFromManifestVersion(stream, session);
return(GetCustomDeserializer(type));
}
case ObjectSerializer.ManifestIndex:
{
var typeId = (int)stream.ReadUInt16(session);
if (typeId < _knownValueSerializers.Length)
{
return(_knownValueSerializers[typeId]);
}
var type = TypeEx.GetTypeFromManifestIndex(typeId, session);
return(GetCustomDeserializer(type));
}
default:
throw new NotSupportedException("Unknown manifest value");
}
}
public ValueSerializer GetDeserializerByManifest(Stream stream, DeserializerSession session)
{
//magic byte, a homage to Apache Kafka
var magicByte = stream.ReadByte();
if (magicByte <= 250)
{
return(_deserializerLookup[magicByte]);
}
switch (magicByte)
{
case ConsistentArraySerializer.Manifest:
return(ConsistentArraySerializer.Instance);
case ObjectReferenceSerializer.Manifest:
return(ObjectReferenceSerializer.Instance);
case ObjectSerializer.ManifestFull:
{
var type = TypeEx.GetTypeFromManifestFull(stream, session);
return(GetCustomDeserializer(type));
}
case ObjectSerializer.ManifestIndex:
{
var typeId = (int)stream.ReadUInt16(session);
if (typeId < _knownValueSerializers.Length)
{
return(_knownValueSerializers[typeId]);
}
var type = TypeEx.GetTypeFromManifestIndex(typeId, session);
return(GetCustomDeserializer(type));
}
default:
throw new NotSupportedException("Unknown manifest value");
}
}
public static object ReadObject(this Stream stream, DeserializerSession session)
{
var s = session.Serializer.GetDeserializerByManifest(stream, session);
var value = s.ReadValue(stream, session); //read the element value
return value;
}
public ValueSerializer GetDeserializerByManifest(Stream stream, DeserializerSession session)
{
var first = stream.ReadByte();
switch (first)
{
case NullSerializer.Manifest:
return(NullSerializer.Instance);
//TODO: hmm why havent I added 1?
case Int64Serializer.Manifest:
return(Int64Serializer.Instance);
case Int16Serializer.Manifest:
return(Int16Serializer.Instance);
case ByteSerializer.Manifest:
return(ByteSerializer.Instance);
case DateTimeSerializer.Manifest:
return(DateTimeSerializer.Instance);
case BoolSerializer.Manifest:
return(BoolSerializer.Instance);
case StringSerializer.Manifest:
return(StringSerializer.Instance);
case Int32Serializer.Manifest:
return(Int32Serializer.Instance);
case ByteArraySerializer.Manifest:
return(ByteArraySerializer.Instance);
case GuidSerializer.Manifest:
return(GuidSerializer.Instance);
case FloatSerializer.Manifest:
return(FloatSerializer.Instance);
case DoubleSerializer.Manifest:
return(DoubleSerializer.Instance);
case DecimalSerializer.Manifest:
return(DecimalSerializer.Instance);
case CharSerializer.Manifest:
return(CharSerializer.Instance);
case TypeSerializer.Manifest:
return(TypeSerializer.Instance);
case UInt16Serializer.Manifest:
return(UInt16Serializer.Instance);
case UInt32Serializer.Manifest:
return(UInt32Serializer.Instance);
case UInt64Serializer.Manifest:
return(UInt64Serializer.Instance);
case SByteSerializer.Manifest:
return(SByteSerializer.Instance);
case ObjectReferenceSerializer.Manifest:
return(ObjectReferenceSerializer.Instance);
case ConsistentArraySerializer.Manifest:
return(ConsistentArraySerializer.Instance);
case ObjectSerializer.ManifestFull:
{
var type = ObjectSerializer.GetTypeFromManifestFull(stream, session);
return(GetCustomDeserialzer(type));
}
case ObjectSerializer.ManifestIndex:
{
var type = ObjectSerializer.GetTypeFromManifestIndex(stream, session);
return(GetCustomDeserialzer(type));
}
default:
throw new NotSupportedException("Unknown manifest value");
}
}
public object Deserialize([NotNull] Stream stream, DeserializerSession session)
{
var s = GetDeserializerByManifest(stream, session);
return(s.ReadValue(stream, session));
}
/// <summary>
/// 从流反序列化到对象
/// </summary>
/// <param name="stream"></param>
/// <param name="session"></param>
/// <returns></returns>
public object Deserialize([NotNull] Stream stream, DeserializerSession session)
{
return(SerializerInstance.Deserialize(stream, session));
}
/// <summary>
/// 从指定文件反序列化对象
/// </summary>
/// <param name="filePath"></param>
/// <param name="session"></param>
/// <returns></returns>
public static object Deserialize([NotNull] string filePath, DeserializerSession session)
{
return(SerializerInstance.Deserialize(filePath, session));
}
public T Deserialize <T>(Stream stream, DeserializerSession session)
{
var s = GetDeserializerByManifest(stream, session);
return((T)s.ReadValue(stream, session));
}
