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use core::fmt::{self, Display, Formatter};
#[cfg(feature = "std")]
use std::error::Error;
/// Error from the `domain` validator.
#[derive(Debug, Clone)]
pub enum DomainError {
/// Incorrect domain data.
Invalid,
/// May not be valid, but it is guaranteed that the domain part is not an IPv4.
IPv4Must,
/// May not be valid, but it is guaranteed that the domain part is an IPv4.
IPv4Disallow,
/// 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 DomainError {
#[inline]
fn fmt(&self, f: &mut Formatter) -> Result<(), fmt::Error> {
match self {
Self::Invalid => f.write_str("invalid domain"),
Self::IPv4Must => f.write_str("must use an IPv4"),
Self::IPv4Disallow => f.write_str("must not use an IPv4"),
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"),
}
}
}
#[cfg(feature = "std")]
impl Error for DomainError {}