Struct rustc_trait_selection::solve::fulfill::BestObligation

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struct BestObligation<'tcx> {
    obligation: PredicateObligation<'tcx>,
    consider_ambiguities: bool,
}

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§obligation: PredicateObligation<'tcx>§consider_ambiguities: bool

Implementations§

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impl<'tcx> BestObligation<'tcx>

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fn with_derived_obligation( &mut self, derived_obligation: PredicateObligation<'tcx>, and_then: impl FnOnce(&mut Self) -> ControlFlow<Obligation<'tcx, Predicate<'tcx>>>, ) -> ControlFlow<Obligation<'tcx, Predicate<'tcx>>>

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fn non_trivial_candidates<'a>( &self, goal: &'a InspectGoal<'a, 'tcx>, ) -> Vec<InspectCandidate<'a, 'tcx>>

Filter out the candidates that aren’t interesting to visit for the purposes of reporting errors. For ambiguities, we only consider candidates that may hold. For errors, we only consider candidates that don’t hold and which have impl-where clauses that also don’t hold.

Trait Implementations§

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impl<'tcx> ProofTreeVisitor<'tcx> for BestObligation<'tcx>

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type Result = ControlFlow<Obligation<'tcx, Predicate<'tcx>>>

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fn span(&self) -> Span

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fn visit_goal(&mut self, goal: &InspectGoal<'_, 'tcx>) -> Self::Result

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fn config(&self) -> InspectConfig

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impl<'tcx> Freeze for BestObligation<'tcx>

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impl<'tcx> !RefUnwindSafe for BestObligation<'tcx>

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impl<'tcx> !Send for BestObligation<'tcx>

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impl<'tcx> !Sync for BestObligation<'tcx>

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impl<'tcx> Unpin for BestObligation<'tcx>

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impl<'tcx> !UnwindSafe for BestObligation<'tcx>

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impl<T> Aligned for T

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const ALIGN: Alignment = _

Alignment of Self.
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where T: 'static + ?Sized,

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where T: ?Sized,

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fn collect_and_apply<I, F>(iter: I, f: F) -> R
where I: Iterator<Item = T>, F: FnOnce(&[T]) -> R,

Equivalent to f(&iter.collect::<Vec<_>>()).

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type Output = R

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fn filterable( self, filter_name: &'static str, ) -> RequestFilterDataProvider<T, fn(_: DataRequest<'_>) -> bool>

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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: 56 bytes