internal static Datatype Read( Hdf5Reader aReader, long?aLocalMessageSize, out long aBytes) { if (aLocalMessageSize.HasValue && aLocalMessageSize.Value < DatatypeHeader.HeaderSize) { throw new ArgumentException("Specified Local Message Size not long enough"); } DatatypeHeader fHeader = DatatypeHeader.Read(aReader); Datatype fMessage; long fAdditionalBytes; long? fBodySize = aLocalMessageSize.HasValue ? (long?)aLocalMessageSize.Value - DatatypeHeader.HeaderSize : null; switch (fHeader.Class) { case DatatypeClass.FixedPoint: fMessage = FixedPointDataType.ReadMessage( fHeader, aReader, fBodySize, out fAdditionalBytes); break; case DatatypeClass.FloatingPoint: fMessage = FloatingPointDataType.ReadMessage( fHeader, aReader, fBodySize, out fAdditionalBytes); break; case DatatypeClass.Time: fMessage = TimeDataType.ReadMessage( fHeader, aReader, fBodySize, out fAdditionalBytes); break; case DatatypeClass.String: fMessage = StringDataType.ReadMessage( fHeader, aReader, fBodySize, out fAdditionalBytes); break; case DatatypeClass.BitField: fMessage = BitFieldDataType.ReadMessage( fHeader, aReader, fBodySize, out fAdditionalBytes); break; case DatatypeClass.Opaque: fMessage = OpaqueDataType.ReadMessage( fHeader, aReader, fBodySize, out fAdditionalBytes); break; case DatatypeClass.Array: fMessage = ArrayDataType.ReadMessage( fHeader, aReader, fBodySize, out fAdditionalBytes); break; default: // We shoudl never git her, as header parsing should check // for known versions of the header throw new Exception("Unexpected Version Type"); } aBytes = DatatypeHeader.HeaderSize + fAdditionalBytes; return(fMessage); }