ASIO_SYNC_OP_VOID serial_port_base::flow_control::store()

in demo_example/asio/asio/impl/serial_port_base.ipp [220:285]

• 66 lines of code
• 14 McCabe index (conditional complexity)

ASIO_SYNC_OP_VOID serial_port_base::flow_control::store(
    ASIO_OPTION_STORAGE& storage, asio::error_code& ec) const
{
#if defined(ASIO_WINDOWS) || defined(__CYGWIN__)
  storage.fOutxCtsFlow = FALSE;
  storage.fOutxDsrFlow = FALSE;
  storage.fTXContinueOnXoff = TRUE;
  storage.fDtrControl = DTR_CONTROL_ENABLE;
  storage.fDsrSensitivity = FALSE;
  storage.fOutX = FALSE;
  storage.fInX = FALSE;
  storage.fRtsControl = RTS_CONTROL_ENABLE;
  switch (value_)
  {
  case none:
    break;
  case software:
    storage.fOutX = TRUE;
    storage.fInX = TRUE;
    break;
  case hardware:
    storage.fOutxCtsFlow = TRUE;
    storage.fRtsControl = RTS_CONTROL_HANDSHAKE;
    break;
  default:
    break;
  }
#else
  switch (value_)
  {
  case none:
    storage.c_iflag &= ~(IXOFF | IXON);
# if defined(_BSD_SOURCE) || defined(_DEFAULT_SOURCE)
    storage.c_cflag &= ~CRTSCTS;
# elif defined(__QNXNTO__)
    storage.c_cflag &= ~(IHFLOW | OHFLOW);
# endif
    break;
  case software:
    storage.c_iflag |= IXOFF | IXON;
# if defined(_BSD_SOURCE) || defined(_DEFAULT_SOURCE)
    storage.c_cflag &= ~CRTSCTS;
# elif defined(__QNXNTO__)
    storage.c_cflag &= ~(IHFLOW | OHFLOW);
# endif
    break;
  case hardware:
# if defined(_BSD_SOURCE) || defined(_DEFAULT_SOURCE)
    storage.c_iflag &= ~(IXOFF | IXON);
    storage.c_cflag |= CRTSCTS;
    break;
# elif defined(__QNXNTO__)
    storage.c_iflag &= ~(IXOFF | IXON);
    storage.c_cflag |= (IHFLOW | OHFLOW);
    break;
# else
    ec = asio::error::operation_not_supported;
    ASIO_SYNC_OP_VOID_RETURN(ec);
# endif
  default:
    break;
  }
#endif
  ec = asio::error_code();
  ASIO_SYNC_OP_VOID_RETURN(ec);
}