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use std::fmt::Display;

#[derive(Debug)]
pub enum Error {
    Io(std::io::Error),
    ParseInt(std::num::ParseIntError),
}

impl From<std::io::Error> for Error {
    fn from(error: std::io::Error) -> Self {
        Error::Io(error)
    }
}

impl From<std::num::ParseIntError> for Error {
    fn from(error: std::num::ParseIntError) -> Self {
        Error::ParseInt(error)
    }
}

impl std::error::Error for Error {
    fn source(&self) -> Option<&(dyn std::error::Error + 'static)> {
        match self {
            Error::Io(e) => Some(e),
            Error::ParseInt(e) => Some(e),
        }
    }
}

impl Display for Error {
    fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
        match self {
            Error::Io(e) => e.fmt(f),
            Error::ParseInt(e) => e.fmt(f),
        }
    }
}