Trait rel_core::BasisPointee

pub trait BasisPointee<B: Basis>: Pointee {
    type BasisMetadata: Copy + Send + Sync + Ord + Hash + Unpin;
    type FromNativeError: Debug;
    type ToNativeError: Debug;

    fn from_native_metadata(
        metadata: Self::Metadata
    ) -> Result<Self::BasisMetadata, Self::FromNativeError>;
    fn to_native_metadata(
        metadata: Self::BasisMetadata
    ) -> Result<Self::Metadata, Self::ToNativeError>;
}

A Pointee with metadata that changes with a choice of basis.

Required Associated Types

type BasisMetadata: Copy + Send + Sync + Ord + Hash + Unpin

The metadata associated with the pointee in the chosen basis.

type FromNativeError: Debug

An error occurred while converting metadata from the native representation.

type ToNativeError: Debug

An error occurred while converting metadata to the native representation.

Required Methods

fn from_native_metadata(
    metadata: Self::Metadata
) -> Result<Self::BasisMetadata, Self::FromNativeError>

Returns the pointer metadata in B corresponding to the given native pointer metadata, or Err if the conversion failed.

fn to_native_metadata(
    metadata: Self::BasisMetadata
) -> Result<Self::Metadata, Self::ToNativeError>

Returns the native pointer metadata corresponding to the given pointer metadata in B, or Err if the conversion failed.

Implementations on Foreign Types

impl<T, B: Basis> BasisPointee<B> for [T]

type BasisMetadata = <B as Basis>::Usize

type FromNativeError = <B as Basis>::FromNativeError

type ToNativeError = <B as Basis>::ToNativeError

fn from_native_metadata(
    metadata: Self::Metadata
) -> Result<Self::BasisMetadata, Self::FromNativeError>

fn to_native_metadata(
    metadata: Self::BasisMetadata
) -> Result<Self::Metadata, Self::ToNativeError>

impl<B: Basis> BasisPointee<B> for str

type BasisMetadata = <B as Basis>::Usize

type FromNativeError = <B as Basis>::FromNativeError

type ToNativeError = <B as Basis>::ToNativeError

fn from_native_metadata(
    metadata: Self::Metadata
) -> Result<Self::BasisMetadata, Self::FromNativeError>

fn to_native_metadata(
    metadata: Self::BasisMetadata
) -> Result<Self::Metadata, Self::ToNativeError>

Implementors

impl<T, B: Basis> BasisPointee<B> for T

type BasisMetadata = ()

type FromNativeError = Infallible

type ToNativeError = Infallible