public T Read <T>(SerializationCtx ctx, UnsafeReader reader, [CanBeNull] CtxReadDelegate <T> unknownInstanceReader = null)
{
bool TryGetReader(RdId rdId, out CtxReadDelegate <object> readDelegate)
{
lock (myLock)
return(myReaders.TryGetValue(rdId, out readDelegate));
}
#if !NET35
myBackgroundRegistrar.WaitForEmpty();
#endif
var typeId = RdId.Read(reader);
if (typeId.IsNil)
{
return(default(T));
}
var size = reader.ReadInt();
if (!TryGetReader(typeId, out var ctxReadDelegate))
{
if (unknownInstanceReader == null)
{
myRegistrar?.TryRegister(typeId, this);
myRegistrar?.TryRegister(typeof(T), this);
if (!TryGetReader(typeId, out ctxReadDelegate))
{
var realType = myTypeMapping.SingleOrDefault(c => Equals(c.Value, typeId)); //ok because it's rarely needed
throw new KeyNotFoundException(string.Format("There is no readers found. Requested type '{0}'. Real type {1}", typeof(T).FullName, realType));
}
}
else
{
var objectStart = reader.Position;
var result = unknownInstanceReader(ctx, reader);
var bytesRead = reader.Position - objectStart;
reader.Skip(size - bytesRead);
return(result);
}
}
var uncasted = ctxReadDelegate(ctx, reader);
Assertion.Assert(uncasted is T, "Bad cast for id {0}. Expected: {1}, actual: {2}", typeId, typeof(T).Name, uncasted.GetType().Name);
return((T)uncasted);
}