struct RegionFolder<'a, 'tcx> {
    tcx: TyCtxt<'tcx>,
    current_index: DebruijnIndex,
    region_map: BTreeMap<BoundRegion, Region<'tcx>>,
    name: &'a mut (dyn FnMut(Option<DebruijnIndex>, DebruijnIndex, BoundRegion) -> Region<'tcx> + 'a),
}
Expand description

Folds through bound vars and placeholders, naming them

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§tcx: TyCtxt<'tcx>§current_index: DebruijnIndex§region_map: BTreeMap<BoundRegion, Region<'tcx>>§name: &'a mut (dyn FnMut(Option<DebruijnIndex>, DebruijnIndex, BoundRegion) -> Region<'tcx> + 'a)

Trait Implementations§

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impl<'a, 'tcx> TypeFolder<TyCtxt<'tcx>> for RegionFolder<'a, 'tcx>

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fn interner(&self) -> TyCtxt<'tcx>

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fn fold_binder<T: TypeFoldable<TyCtxt<'tcx>>>( &mut self, t: Binder<'tcx, T> ) -> Binder<'tcx, T>

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fn fold_ty(&mut self, t: Ty<'tcx>) -> Ty<'tcx>

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fn fold_region(&mut self, r: Region<'tcx>) -> Region<'tcx>

Auto Trait Implementations§

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impl<'a, 'tcx> !RefUnwindSafe for RegionFolder<'a, 'tcx>

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impl<'a, 'tcx> !Send for RegionFolder<'a, 'tcx>

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impl<'a, 'tcx> !Sync for RegionFolder<'a, 'tcx>

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impl<'a, 'tcx> Unpin for RegionFolder<'a, 'tcx>

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impl<'a, 'tcx> !UnwindSafe for RegionFolder<'a, 'tcx>

Blanket 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 Twhere 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 Twhere 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 Twhere 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) -> Rwhere 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<I, F> FallibleTypeFolder<I> for Fwhere I: Interner, F: TypeFolder<I>,

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type Error = !

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fn interner(&self) -> I

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fn try_fold_binder<T>( &mut self, t: <I as Interner>::Binder<T> ) -> Result<<I as Interner>::Binder<T>, !>where T: TypeFoldable<I>, <I as Interner>::Binder<T>: TypeSuperFoldable<I>,

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fn try_fold_ty( &mut self, t: <I as Interner>::Ty ) -> Result<<I as Interner>::Ty, !>where <I as Interner>::Ty: TypeSuperFoldable<I>,

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fn try_fold_region( &mut self, r: <I as Interner>::Region ) -> Result<<I as Interner>::Region, !>

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fn try_fold_const( &mut self, c: <I as Interner>::Const ) -> Result<<I as Interner>::Const, !>where <I as Interner>::Const: TypeSuperFoldable<I>,

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fn try_fold_predicate( &mut self, p: <I as Interner>::Predicate ) -> Result<<I as Interner>::Predicate, !>where <I as Interner>::Predicate: TypeSuperFoldable<I>,

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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 Twhere 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 Twhere 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 Twhere 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 Twhere Tcx: DepContext,

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default fn from_cycle_error( tcx: Tcx, cycle: &[QueryInfo], _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: 56 bytes