struct LateBoundRegionsCollector {
    current_index: DebruijnIndex,
    regions: FxHashSet<BoundRegionKind>,
    just_constrained: bool,
}
Expand description

Collects all the late-bound regions at the innermost binding level into a hash set.

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§current_index: DebruijnIndex§regions: FxHashSet<BoundRegionKind>§just_constrained: bool

true if we only want regions that are known to be “constrained” when you equate this type with another type. In particular, if you have e.g., &'a u32 and &'b u32, equating them constraints 'a == 'b. But if you have <&'a u32 as Trait>::Foo and <&'b u32 as Trait>::Foo, normalizing those types may mean that 'a and 'b don’t appear in the results, so they are not considered constrained.

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impl LateBoundRegionsCollector

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fn new(just_constrained: bool) -> Self

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impl<'tcx> TypeVisitor<TyCtxt<'tcx>> for LateBoundRegionsCollector

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fn visit_binder<T: TypeVisitable<TyCtxt<'tcx>>>( &mut self, t: &Binder<'tcx, T> ) -> ControlFlow<Self::BreakTy>

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fn visit_ty(&mut self, t: Ty<'tcx>) -> ControlFlow<Self::BreakTy>

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fn visit_const(&mut self, c: Const<'tcx>) -> ControlFlow<Self::BreakTy>

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fn visit_region(&mut self, r: Region<'tcx>) -> ControlFlow<Self::BreakTy>

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type BreakTy = !

Auto Trait Implementations§

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impl<T> Aligned for T

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const ALIGN: Alignment = _

Alignment of Self.
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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T, R> CollectAndApply<T, R> for T

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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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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<P> IntoQueryParam<P> for P

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impl<T> MaybeResult<T> for T

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type Error = !

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fn from(_: Result<T, <T as MaybeResult<T>>::Error>) -> T

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fn to_result(self) -> Result<T, <T as MaybeResult<T>>::Error>

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impl<'tcx, T> ToPredicate<'tcx, T> for T

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fn to_predicate(self, _tcx: TyCtxt<'tcx>) -> T

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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<Tcx, T> Value<Tcx> for T
where Tcx: DepContext,

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default fn from_cycle_error( tcx: Tcx, cycle_error: &CycleError, _guar: ErrorGuaranteed ) -> T

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: 40 bytes