Struct rustc_trait_selection::traits::query::type_op::outlives::DropckOutlives

pub struct DropckOutlives<'tcx> {
    dropped_ty: Ty<'tcx>,
}

Fields

dropped_ty: Ty<'tcx>

Implementations

impl<'tcx> DropckOutlives<'tcx>

pub fn new(dropped_ty: Ty<'tcx>) -> Self

Trait Implementations

impl<'tcx> Clone for DropckOutlives<'tcx>

fn clone(&self) -> DropckOutlives<'tcx>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<'tcx> Debug for DropckOutlives<'tcx>

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

Formats the value using the given formatter.

impl<'tcx, '__ctx> HashStable<StableHashingContext<'__ctx>> for DropckOutlives<'tcx>

fn hash_stable( &self, __hcx: &mut StableHashingContext<'__ctx>, __hasher: &mut StableHasher )

impl<'tcx> QueryTypeOp<'tcx> for DropckOutlives<'tcx>

type QueryResponse = DropckOutlivesResult<'tcx>

fn try_fast_path( tcx: TyCtxt<'tcx>, key: &ParamEnvAnd<'tcx, Self> ) -> Option<Self::QueryResponse>

Give query the option for a simple fast path that never actually hits the tcx cache lookup etc. Return Some(r) with a final result or None to do the full path.

fn perform_query( tcx: TyCtxt<'tcx>, canonicalized: Canonical<'tcx, ParamEnvAnd<'tcx, Self>> ) -> Result<CanonicalQueryResponse<'tcx, Self::QueryResponse>, NoSolution>

Performs the actual query with the canonicalized key – the real work happens here. This method is not given an infcx because it shouldn’t need one – and if it had access to one, it might do things like invoke sub_regions, which would be bad, because it would create subregion relationships that are not captured in the return value.

fn perform_locally_in_new_solver( ocx: &ObligationCtxt<'_, 'tcx>, key: ParamEnvAnd<'tcx, Self> ) -> Result<Self::QueryResponse, NoSolution>

In the new trait solver, we already do caching in the solver itself, so there’s no need to canonicalize and cache via the query system. Additionally, even if we were to canonicalize, we’d still need to make sure to feed it predefined opaque types and the defining anchor and that would require duplicating all of the tcx queries. Instead, just perform these ops locally.

fn fully_perform_into( query_key: ParamEnvAnd<'tcx, Self>, infcx: &InferCtxt<'tcx>, output_query_region_constraints: &mut QueryRegionConstraints<'tcx> ) -> Result<(Self::QueryResponse, Option<Canonical<'tcx, ParamEnvAnd<'tcx, Self>>>, PredicateObligations<'tcx>, Certainty), NoSolution>

impl<'tcx> TypeFoldable<TyCtxt<'tcx>> for DropckOutlives<'tcx>

fn try_fold_with<__F: FallibleTypeFolder<TyCtxt<'tcx>>>( self, __folder: &mut __F ) -> Result<Self, __F::Error>

The entry point for folding. To fold a value t with a folder f call: t.try_fold_with(f).

fn fold_with<F>(self, folder: &mut F) -> Selfwhere F: TypeFolder<I>,

A convenient alternative to try_fold_with for use with infallible folders. Do not override this method, to ensure coherence with try_fold_with.

impl<'tcx> TypeVisitable<TyCtxt<'tcx>> for DropckOutlives<'tcx>

fn visit_with<__V: TypeVisitor<TyCtxt<'tcx>>>( &self, __visitor: &mut __V ) -> ControlFlow<__V::BreakTy>

The entry point for visiting. To visit a value t with a visitor v call: t.visit_with(v).

impl<'tcx> Copy for DropckOutlives<'tcx>

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 8 bytes