| //! Internal error handling code, shared between encoding and decoding. |
| //! |
| //! This is used mainly for backwards compatibility and abstraction over std/no_std. |
| |
| /// An alias to the "default" error handling type. |
| /// |
| /// This is problematic because when working on `#[no_std]`, because there is no [`std::error::Error`] trait and also no [`std::io::Error`] type. |
| /// |
| /// Furthermore, this doesn't abstract over the differences between different implementations of [`RmpRead`](crate::decode::RmpRead)/[`RmpWrite`](crate::encode::RmpWrite). |
| /// |
| /// When working directly with bytes streams, the error type is actually [Infallible](core::convert::Infallible). |
| /// |
| /// For these two reasons, this type is deprecated |
| #[cfg(feature = "std")] |
| #[deprecated(note = "Doesn't abstract over RmpRead/RmpWrite (or work on no_std), use RmpRead::Error/RmpWrite::Error and RmpReadErr/RmpWriteErr instead")] |
| pub type Error = ::std::io::Error; |
| |
| #[cfg(not(feature = "std"))] |
| #[deprecated(note = "Doesn't work meaningfully on no_std")] |
| pub type Error = ::core::convert::Infallible; |
| |
| |
| /// Internal type used to abstract over the [`std::error::Error`] trait |
| /// |
| /// This is a nop in no-std environments. |
| #[cfg(feature = "std")] |
| #[doc(hidden)] |
| pub trait MaybeErrBound: std::error::Error {} |
| #[cfg(feature = "std")] |
| impl<T: ?Sized + std::error::Error> MaybeErrBound for T {} |
| #[cfg(not(feature = "std"))] |
| #[doc(hidden)] |
| pub trait MaybeErrBound {} |
| #[cfg(not(feature = "std"))] |
| impl<T: ?Sized> MaybeErrBound for T {} |
