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use core::fmt::{self, Display, Formatter};
/// Error from the `host` validator.
#[derive(Debug, Clone)]
pub enum HostError {
/// Incorrect host data.
Invalid,
/// May not be valid, but it is guaranteed that the domain part is not local.
LocalMust,
/// May not be valid, but it is guaranteed that the domain part is local.
LocalDisallow,
/// May not be valid, but it is guaranteed that the domain part has only one label.
AtLeastTwoLabelsMust,
/// May not be valid, but it is guaranteed that the domain part has at least two labels.
AtLeastTwoLabelsDisallow,
/// May not be valid, but missing a port is guaranteed.
PortMust,
/// May not be valid and the port part seems to exist.
PortDisallow,
}
impl Display for HostError {
#[inline]
fn fmt(&self, f: &mut Formatter) -> Result<(), fmt::Error> {
match self {
Self::Invalid => f.write_str("invalid domain or IP"),
Self::LocalMust => f.write_str("must be local"),
Self::LocalDisallow => f.write_str("must not be local"),
Self::AtLeastTwoLabelsMust => f.write_str("must have at least two labels"),
Self::AtLeastTwoLabelsDisallow => f.write_str("must have only one label"),
Self::PortMust => f.write_str("port not found"),
Self::PortDisallow => f.write_str("port not allowed"),
}
}
}
impl core::error::Error for HostError {}