func setOption0()

in Sources/NIOPosix/BaseSocketChannel.swift [556:589]
29 lines of code
9 McCabe index (conditional complexity)

    func setOption0<Option: ChannelOption>(_ option: Option, value: Option.Value) throws {
        self.eventLoop.assertInEventLoop()

        guard isOpen else {
            throw ChannelError.ioOnClosedChannel
        }

        switch option {
        case let option as ChannelOptions.Types.SocketOption:
            try self.setSocketOption0(level: option.optionLevel, name: option.optionName, value: value)
        case _ as ChannelOptions.Types.AllocatorOption:
            bufferAllocator = value as! ByteBufferAllocator
        case _ as ChannelOptions.Types.RecvAllocatorOption:
            recvAllocator = value as! RecvByteBufferAllocator
        case _ as ChannelOptions.Types.AutoReadOption:
            let auto = value as! Bool
            let old = self.autoRead
            self.autoRead = auto

            // We only want to call read0() or pauseRead0() if we already registered to the EventLoop if not this will be automatically done
            // once register0 is called. Beside this we also only need to do it when the value actually change.
            if self.lifecycleManager.isPreRegistered && old != auto {
                if auto {
                    read0()
                } else {
                    pauseRead0()
                }
            }
        case _ as ChannelOptions.Types.MaxMessagesPerReadOption:
            maxMessagesPerRead = value as! UInt
        default:
            fatalError("option \(option) not supported")
        }
    }