BoundVarReplacer

rustc_next_trait_solver::placeholder

Struct BoundVarReplacer 

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pub struct BoundVarReplacer<'a, Infcx, I = I>
where
    Infcx: InferCtxtLike<Interner = I>,
    I: Interner,
{
    infcx: &'a Infcx,
    mapped_regions: IndexMap<I::PlaceholderRegion, I::BoundRegion>,
    mapped_types: IndexMap<I::PlaceholderTy, I::BoundTy>,
    mapped_consts: IndexMap<I::PlaceholderConst, I::BoundConst>,
    current_index: DebruijnIndex,
    universe_indices: &'a mut Vec<Option<UniverseIndex>>,
}

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§infcx: &'a Infcx§mapped_regions: IndexMap<I::PlaceholderRegion, I::BoundRegion>§mapped_types: IndexMap<I::PlaceholderTy, I::BoundTy>§mapped_consts: IndexMap<I::PlaceholderConst, I::BoundConst>§current_index: DebruijnIndex§universe_indices: &'a mut Vec<Option<UniverseIndex>>

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impl<'a, Infcx, I> BoundVarReplacer<'a, Infcx, I>
where Infcx: InferCtxtLike<Interner = I>, I: Interner,

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pub fn replace_bound_vars<T: TypeFoldable<I>>( infcx: &'a Infcx, universe_indices: &'a mut Vec<Option<UniverseIndex>>, value: T, ) -> (T, IndexMap<I::PlaceholderRegion, I::BoundRegion>, IndexMap<I::PlaceholderTy, I::BoundTy>, IndexMap<I::PlaceholderConst, I::BoundConst>)

Returns Some if we were able to replace bound vars. If there are any bound vars that use a binding level above universe_indices.len(), we fail.

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fn universe_for(&mut self, debruijn: DebruijnIndex) -> UniverseIndex

Trait Implementations§

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impl<Infcx, I> TypeFolder<I> for BoundVarReplacer<'_, Infcx, I>
where Infcx: InferCtxtLike<Interner = I>, I: Interner,

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fn cx(&self) -> I

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fn fold_binder<T: TypeFoldable<I>>(&mut self, t: Binder<I, T>) -> Binder<I, T>

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fn fold_region(&mut self, r: I::Region) -> I::Region

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fn fold_ty(&mut self, t: I::Ty) -> I::Ty

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fn fold_const(&mut self, ct: I::Const) -> I::Const

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fn fold_predicate(&mut self, p: I::Predicate) -> I::Predicate

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fn fold_clauses( &mut self, c: <I as Interner>::Clauses, ) -> <I as Interner>::Clauses

Auto Trait Implementations§

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impl<'a, Infcx, I> DynSend for BoundVarReplacer<'a, Infcx, I>
where Infcx: DynSync, <I as Interner>::PlaceholderRegion: DynSend, <I as Interner>::BoundRegion: DynSend, <I as Interner>::PlaceholderTy: DynSend, <I as Interner>::BoundTy: DynSend, <I as Interner>::PlaceholderConst: DynSend, <I as Interner>::BoundConst: DynSend,

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impl<'a, Infcx, I> DynSync for BoundVarReplacer<'a, Infcx, I>
where Infcx: DynSync, <I as Interner>::PlaceholderRegion: DynSync, <I as Interner>::BoundRegion: DynSync, <I as Interner>::PlaceholderTy: DynSync, <I as Interner>::BoundTy: DynSync, <I as Interner>::PlaceholderConst: DynSync, <I as Interner>::BoundConst: DynSync,

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impl<'a, Infcx, I> Freeze for BoundVarReplacer<'a, Infcx, I>

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impl<'a, Infcx, I> RefUnwindSafe for BoundVarReplacer<'a, Infcx, I>
where Infcx: RefUnwindSafe, <I as Interner>::PlaceholderRegion: RefUnwindSafe, <I as Interner>::BoundRegion: RefUnwindSafe, <I as Interner>::PlaceholderTy: RefUnwindSafe, <I as Interner>::BoundTy: RefUnwindSafe, <I as Interner>::PlaceholderConst: RefUnwindSafe, <I as Interner>::BoundConst: RefUnwindSafe,

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impl<'a, Infcx, I> Send for BoundVarReplacer<'a, Infcx, I>
where Infcx: Sync, <I as Interner>::PlaceholderRegion: Send, <I as Interner>::BoundRegion: Send, <I as Interner>::PlaceholderTy: Send, <I as Interner>::BoundTy: Send, <I as Interner>::PlaceholderConst: Send, <I as Interner>::BoundConst: Send,

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impl<'a, Infcx, I> Sync for BoundVarReplacer<'a, Infcx, I>
where Infcx: Sync, <I as Interner>::PlaceholderRegion: Sync, <I as Interner>::BoundRegion: Sync, <I as Interner>::PlaceholderTy: Sync, <I as Interner>::BoundTy: Sync, <I as Interner>::PlaceholderConst: Sync, <I as Interner>::BoundConst: Sync,

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impl<'a, Infcx, I> Unpin for BoundVarReplacer<'a, Infcx, I>
where <I as Interner>::PlaceholderRegion: Unpin, <I as Interner>::BoundRegion: Unpin, <I as Interner>::PlaceholderTy: Unpin, <I as Interner>::BoundTy: Unpin, <I as Interner>::PlaceholderConst: Unpin, <I as Interner>::BoundConst: Unpin,

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impl<'a, Infcx, I = <Infcx as InferCtxtLike>::Interner> !UnwindSafe for BoundVarReplacer<'a, Infcx, I>

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 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> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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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<T> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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impl<T> Pointable for T

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const ALIGN: usize

The alignment of pointer.
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type Init = T

The type for initializers.
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Initializes a with the given initializer. Read more
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Dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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impl<T> Same for T

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type Output = T

Should always be Self
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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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Performs the conversion.
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where U: TryFrom<T>,

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

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where S: Into<Dispatch>,

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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: 192 bytes