rcache 0.1.1

A basic, featureless memory cache with a TCP frontend analogous to memcached.
Documentation 
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use std::error;
use std::fmt;
use std::io;

/// `ErrorKind`
#[derive(Debug)]
pub enum ErrorKind {
    InvalidData,
    UnknownOp,
    BadMessage,
    Other,
}

impl fmt::Display for ErrorKind {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        let s = match *self {
            ErrorKind::Other => "Other",
            ErrorKind::InvalidData => "InvalidData",
            ErrorKind::UnknownOp => "Unknown Op",
            ErrorKind::BadMessage => "Bad Message",
        };
        write!(f, "{}", s)
    }
}

/// `Error`
#[derive(Debug)]
pub struct Error {
    kind: ErrorKind,
    description: String,
}

impl Error {
    pub fn new(kind: ErrorKind, description: &str) -> Self {
        Self {
            kind: kind,
            description: description.to_owned(),
        }
    }
}

impl error::Error for Error {
    fn description(&self) -> &str {
        self.description.as_str()
    }
}

impl fmt::Display for Error {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        write!(f, "{}: {}", self.kind, self.description)
    }
}

impl From<&'static str> for Error {
    fn from(e: &'static str) -> Self {
        Error::new(ErrorKind::Other, e)
    }
}
impl From<Error> for io::Error {
    fn from(e: Error) -> Self {
        io::Error::new(io::ErrorKind::Other, e)
    }
}