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use crate::StdError;
use core::fmt::{self, Debug, Display};
#[repr(transparent)]
pub(crate) struct DisplayError<M>(pub(crate) M);
#[repr(transparent)]
pub(crate) struct MessageError<M>(pub(crate) M);
pub(crate) struct NoneError;
impl<M> Debug for DisplayError<M>
where
M: Display,
{
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
Display::fmt(&self.0, f)
}
}
impl<M> Display for DisplayError<M>
where
M: Display,
{
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
Display::fmt(&self.0, f)
}
}
impl<M> StdError for DisplayError<M> where M: Display + 'static {}
impl<M> Debug for MessageError<M>
where
M: Display + Debug,
{
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
Debug::fmt(&self.0, f)
}
}
impl<M> Display for MessageError<M>
where
M: Display + Debug,
{
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
Display::fmt(&self.0, f)
}
}
impl<M> StdError for MessageError<M> where M: Display + Debug + 'static {}
impl Debug for NoneError {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
Debug::fmt("Option was None", f)
}
}
impl Display for NoneError {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
Display::fmt("Option was None", f)
}
}
impl StdError for NoneError {}
#[repr(transparent)]
pub(crate) struct BoxedError(pub(crate) Box<dyn StdError + Send + Sync>);
impl Debug for BoxedError {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
Debug::fmt(&self.0, f)
}
}
impl Display for BoxedError {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
Display::fmt(&self.0, f)
}
}
impl StdError for BoxedError {
#[cfg(backtrace)]
fn backtrace(&self) -> Option<&crate::backtrace::Backtrace> {
self.0.backtrace()
}
fn source(&self) -> Option<&(dyn StdError + 'static)> {
self.0.source()
}
}