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use crate::StdError;
use core::fmt::{self, Debug, Display};
#[cfg(backtrace)]
use std::any::Demand;
#[repr(transparent)]
pub struct MessageError<M>(pub M);
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 {}
#[repr(transparent)]
pub struct DisplayError<M>(pub M);
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 {}
#[cfg(feature = "std")]
#[repr(transparent)]
pub struct BoxedError(pub Box<dyn StdError + Send + Sync>);
#[cfg(feature = "std")]
impl Debug for BoxedError {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
Debug::fmt(&self.0, f)
}
}
#[cfg(feature = "std")]
impl Display for BoxedError {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
Display::fmt(&self.0, f)
}
}
#[cfg(feature = "std")]
impl StdError for BoxedError {
fn source(&self) -> Option<&(dyn StdError + 'static)> {
self.0.source()
}
#[cfg(backtrace)]
fn provide<'a>(&'a self, demand: &mut Demand<'a>) {
self.0.provide(demand);
}
}
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