func doWrite(_data)
  if (isset(FStream))
    println(FStream, '.write(', InData, ')')
  end
end

func doRead(_data)
  fvar(code_)
  if (isset(FStream))
    code_ = FStream + '.read(' + ((linked(Size))?(', ' + Size):' ') + ')'
    if (linked(OutData))
      println(res, ' = ', code_)
      if (linked(onRead))
        event(onRead, res)
      end
    else
      event(onRead, code_)
    end
  end
end

func doReadLine(_data)
  fvar(code_)
  if (isset(FStream))
    code_ = "" + FStream + ".readline(" + ((linked(Size))?(", " + Size):" ") + ")"
    if (linked(OutData))
      println(res, ' = ', code_)
      if (linked(onRead))
        event(onRead, res)
      end
    else
      event(onRead, code_)
    end
  end
end

func doReadLines(_data)
  fvar(code_)
  if (isset(FStream))
    code_ = FStream + '.readlines(' + ((linked(Size))?(', ' + Size):' ') + ')'
    event(onRead, code_)
  end
end

func doPosition(_data)
  println(FStream, '.seek(', Position, ((isndef(SeekWhence))?(', os.' + SeekWhence):''), ')')
end

func OutData()
  return(res)
end

func Position()
  return(FStream, '.tell()')
end