Trait AsLocalKey

pub trait AsLocalKey: Key {
    type LocalKey;

    // Required method
    fn as_local_key(&self) -> Option<Self::LocalKey>;
}

Required Associated Types

type LocalKey

Required Methods

fn as_local_key(&self) -> Option<Self::LocalKey>

Given an instance of this key, what crate is it referring to? This is used to find the provider.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types

impl AsLocalKey for (CrateNum, DefId)

type LocalKey = DefId

fn as_local_key(&self) -> Option<Self::LocalKey>

impl AsLocalKey for (CrateNum, SimplifiedType)

type LocalKey = SimplifiedType<DefId>

fn as_local_key(&self) -> Option<Self::LocalKey>

impl AsLocalKey for CrateNum

type LocalKey = LocalCrate

fn as_local_key(&self) -> Option<Self::LocalKey>

impl AsLocalKey for DefId

type LocalKey = LocalDefId

fn as_local_key(&self) -> Option<Self::LocalKey>

impl AsLocalKey for ModDefId

type LocalKey = LocalModDefId

fn as_local_key(&self) -> Option<Self::LocalKey>

Implementors

impl<'tcx> AsLocalKey for InstanceKind<'tcx>

type LocalKey = InstanceKind<'tcx>