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use gio_sys;
use glib::translate::*;
use InetAddress;
use SocketFamily;

#[derive(Debug)]
pub enum InetAddressBytes<'a> {
    V4(&'a [u8; 4]),
    V6(&'a [u8; 16]),
}

impl<'a> InetAddressBytes<'a> {
    fn deref(&self) -> &[u8] {
        use self::InetAddressBytes::*;

        match *self {
            V4(bytes) => bytes,
            V6(bytes) => bytes,
        }
    }
}

impl InetAddress {
    /// Creates a new `InetAddress` from the given `family` and `bytes`.
    /// `bytes` should be 4 bytes for `SocketFamily::Ipv4` and 16 bytes for
    /// `SocketFamily::Ipv6`.
    /// ## `bytes`
    /// raw address data
    /// ## `family`
    /// the address family of `bytes`
    ///
    /// # Returns
    ///
    /// a new `InetAddress` corresponding to `family` and `bytes`.
    ///  Free the returned object with `gobject::ObjectExt::unref`.
    pub fn new_from_bytes(inet_address_bytes: InetAddressBytes) -> Self {
        use self::InetAddressBytes::*;

        let bytes = inet_address_bytes.deref();

        let family = match inet_address_bytes {
            V4(_) => SocketFamily::Ipv4,
            V6(_) => SocketFamily::Ipv6,
        };
        unsafe {
            from_glib_full(gio_sys::g_inet_address_new_from_bytes(
                bytes.to_glib_none().0,
                family.to_glib(),
            ))
        }
    }
}