示例#1
0
		public static async Task< UInt32> UnpackUInt32ValueAsync( Unpacker unpacker, Type objectType, String memberName, CancellationToken cancellationToken )
		{
			if ( unpacker == null )
			{
				SerializationExceptions.ThrowArgumentNullException( "unpacker" );
			}

			if ( objectType == null )
			{
				SerializationExceptions.ThrowArgumentNullException( "objectType" );
			}

			if ( memberName == null )
			{
				SerializationExceptions.ThrowArgumentNullException( "memberName" );
			}

#if ASSERT
			Contract.Assert( unpacker != null );
			Contract.Assert( objectType != null );
			Contract.Assert( memberName != null );
#endif // ASSERT

			// ReSharper disable once RedundantAssignment
			var ctx = default( UnpackerTraceContext );
			InitializeUnpackerTrace( unpacker, ref ctx );

			try
			{
				AsyncReadResult<UInt32> result =
					await unpacker.ReadUInt32Async( cancellationToken ).ConfigureAwait( false );
				if ( !result.Success )
				{
					SerializationExceptions.ThrowFailedToDeserializeMember( objectType, memberName, null );
				}

				Trace( ctx, "ReadDirect", unpacker, memberName );

				return result.Value;
			}
			catch ( MessageTypeException ex )
			{
				SerializationExceptions.ThrowFailedToDeserializeMember( objectType, memberName, ex );
				return default( UInt32 ); // never reaches.
			}
		}