struct NmFileReader<F>
{
    state : State,
    buffer : BufReader<F>
}

impl<F> NmFileReader<F>
{
    fn new(reader : BufReader<F>) -> NmFileReader<F>
    {
        return NmFileReader{ state:State::InitialState, buffer:reader};
    }
}

impl<F : BufRead> Iterator for NmFileReader<F>
{
    type Item = String;

    fn next(&mut self) -> Option<String>
    {
        let mut line = String::new();
        let line_size = self.buffer.read_line(& mut line);
        return match line_size
        {
            Ok(l) => Some(line),
            Error => None
        }
    }
}



    fn from_reader(reader : BufReader<File>) -> NmFile
    {
        let mut nmReader = NmFileReader::new(reader);
        let lines = nmReader.count();
        return NmFile{p : Vec::new(), r : Vec::new()};
    }