Struct Feed

pub struct Feed<'tcx, KEY: Copy> {
    _tcx: PhantomData<TyCtxt<'tcx>>,
    key: KEY,
}

The same as TyCtxtFeed, but does not contain a TyCtxt. Use this to pass around when you have a TyCtxt elsewhere. Just an optimization to save space and not store hundreds of TyCtxtFeed in the resolver.

Fields

_tcx: PhantomData<TyCtxt<'tcx>>

key: KEY

Implementations

impl<'tcx, KEY: Copy> Feed<'tcx, KEY>

pub fn key(&self) -> KEY

pub fn upgrade(self, tcx: TyCtxt<'tcx>) -> TyCtxtFeed<'tcx, KEY>

Trait Implementations

impl<'tcx, KEY: Clone + Copy> Clone for Feed<'tcx, KEY>

fn clone(&self) -> Feed<'tcx, KEY>

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<T: Debug + Copy> Debug for Feed<'_, T>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'tcx, KEY: Copy + Copy> Copy for Feed<'tcx, KEY>

impl<KEY: Copy, CTX> !HashStable<CTX> for Feed<'_, KEY>

Never return a Feed from a query. Only queries that create a DefId are allowed to feed queries for that DefId.

Layout

Note: Unable to compute type layout, possibly due to this type having generic parameters. Layout can only be computed for concrete, fully-instantiated types.