Trait DispatchKey 

trait DispatchKey: Sized {
    type LocalId;

    // Required method
    fn dispatch_query<R>(
        self,
        genv: GlobalEnv<'_, '_>,
        local: impl FnOnce(Self::LocalId) -> R,
        external: impl FnOnce(Self) -> Option<R>,
        default: impl FnOnce(Self) -> R,
    ) -> R;
}

Logic to dispatch a def_id to a provider (local, external, or default). This is a trait so it can be implemented for DefId and for FluxDefId.

Required Associated Types

type LocalId

Required Methods

fn dispatch_query<R>( self, genv: GlobalEnv<'_, '_>, local: impl FnOnce(Self::LocalId) -> R, external: impl FnOnce(Self) -> Option<R>, default: impl FnOnce(Self) -> R, ) -> R

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 DispatchKey for DefId

type LocalId = MaybeExternId

fn dispatch_query<R>( self, genv: GlobalEnv<'_, '_>, local: impl FnOnce(MaybeExternId) -> R, external: impl FnOnce(Self) -> Option<R>, default: impl FnOnce(Self) -> R, ) -> R

Implementors

impl DispatchKey for FluxDefId

type LocalId = FluxId<MaybeExternId>