use core::fmt;
const INVALID_ENCODING_MSG: &str = "invalid Base64 encoding";
const INVALID_LENGTH_MSG: &str = "invalid Base64 length";
#[derive(Copy, Clone, Debug, Eq, PartialEq)]
pub struct InvalidLengthError;
impl fmt::Display for InvalidLengthError {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> Result<(), fmt::Error> {
f.write_str(INVALID_LENGTH_MSG)
}
}
#[cfg(feature = "std")]
impl std::error::Error for InvalidLengthError {}
#[derive(Copy, Clone, Debug, Eq, PartialEq)]
pub struct InvalidEncodingError;
impl fmt::Display for InvalidEncodingError {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> Result<(), fmt::Error> {
f.write_str(INVALID_ENCODING_MSG)
}
}
#[cfg(feature = "std")]
impl std::error::Error for InvalidEncodingError {}
#[derive(Copy, Clone, Debug, Eq, PartialEq)]
pub enum Error {
InvalidEncoding,
InvalidLength,
}
impl fmt::Display for Error {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> Result<(), fmt::Error> {
let s = match self {
Self::InvalidEncoding => INVALID_ENCODING_MSG,
Self::InvalidLength => INVALID_LENGTH_MSG,
};
f.write_str(s)
}
}
impl From<InvalidEncodingError> for Error {
#[inline]
fn from(_: InvalidEncodingError) -> Error {
Error::InvalidEncoding
}
}
impl From<InvalidLengthError> for Error {
#[inline]
fn from(_: InvalidLengthError) -> Error {
Error::InvalidLength
}
}
impl From<core::str::Utf8Error> for Error {
#[inline]
fn from(_: core::str::Utf8Error) -> Error {
Error::InvalidEncoding
}
}
#[cfg(feature = "std")]
impl From<Error> for std::io::Error {
fn from(err: Error) -> std::io::Error {
std::io::Error::new(std::io::ErrorKind::InvalidData, err)
}
}
#[cfg(feature = "std")]
impl std::error::Error for Error {}