pub struct PlaceholderReplacer<'me, 'tcx> {
    infcx: &'me InferCtxt<'tcx>,
    mapped_regions: BTreeMap<PlaceholderRegion, BoundRegion>,
    mapped_types: BTreeMap<PlaceholderType, BoundTy>,
    mapped_consts: BTreeMap<PlaceholderConst<'tcx>, BoundVar>,
    universe_indices: &'me [Option<UniverseIndex>],
    current_index: DebruijnIndex,
}
Expand description

The inverse of BoundVarReplacer: replaces placeholders with the bound vars from which they came.

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§infcx: &'me InferCtxt<'tcx>§mapped_regions: BTreeMap<PlaceholderRegion, BoundRegion>§mapped_types: BTreeMap<PlaceholderType, BoundTy>§mapped_consts: BTreeMap<PlaceholderConst<'tcx>, BoundVar>§universe_indices: &'me [Option<UniverseIndex>]§current_index: DebruijnIndex

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impl<'me, 'tcx> PlaceholderReplacer<'me, 'tcx>

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pub fn replace_placeholders<T: TypeFoldable<TyCtxt<'tcx>>>( infcx: &'me InferCtxt<'tcx>, mapped_regions: BTreeMap<PlaceholderRegion, BoundRegion>, mapped_types: BTreeMap<PlaceholderType, BoundTy>, mapped_consts: BTreeMap<PlaceholderConst<'tcx>, BoundVar>, universe_indices: &'me [Option<UniverseIndex>], value: T ) -> T

Trait Implementations§

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impl<'tcx> TypeFolder<TyCtxt<'tcx>> for PlaceholderReplacer<'_, '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_region(&mut self, r0: Region<'tcx>) -> Region<'tcx>

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fn fold_ty(&mut self, ty: Ty<'tcx>) -> Ty<'tcx>

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fn fold_const(&mut self, ct: Const<'tcx>) -> Const<'tcx>

Auto Trait Implementations§

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impl<'me, 'tcx> !RefUnwindSafe for PlaceholderReplacer<'me, 'tcx>

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impl<'me, 'tcx> !Send for PlaceholderReplacer<'me, 'tcx>

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impl<'me, 'tcx> !Sync for PlaceholderReplacer<'me, 'tcx>

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impl<'me, 'tcx> Unpin for PlaceholderReplacer<'me, 'tcx>

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impl<'me, 'tcx> !UnwindSafe for PlaceholderReplacer<'me, 'tcx>

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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<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<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.

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: 104 bytes