rustc_borrowck::region_infer::values

Struct PlaceholderIndices

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pub(crate) struct PlaceholderIndices {
    indices: FxIndexSet<PlaceholderRegion>,
}
Expand description

Maps from ty::PlaceholderRegion values that are used in the rest of rustc to the internal PlaceholderIndex values that are used in NLL.

Fields§

§indices: FxIndexSet<PlaceholderRegion>

Implementations§

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impl PlaceholderIndices

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pub(crate) fn insert( &mut self, placeholder: PlaceholderRegion, ) -> PlaceholderIndex

Returns the PlaceholderIndex for the inserted PlaceholderRegion

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pub(crate) fn lookup_index( &self, placeholder: PlaceholderRegion, ) -> PlaceholderIndex

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pub(crate) fn lookup_placeholder( &self, placeholder: PlaceholderIndex, ) -> PlaceholderRegion

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pub(crate) fn len(&self) -> usize

Trait Implementations§

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impl Debug for PlaceholderIndices

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl Default for PlaceholderIndices

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fn default() -> PlaceholderIndices

Returns the “default value” for a type. Read more

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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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> Filterable for T

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

Creates a filterable data provider with the given name for debugging. Read more
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fn from(t: T) -> T

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

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where U: From<T>,

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Calls U::from(self).

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

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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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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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fn into_query_param(self) -> P

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type Error = !

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type Output = T

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

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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

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impl<I, T, U> Upcast<I, U> for T
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fn upcast(self, interner: I) -> U

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impl<I, T> UpcastFrom<I, T> for T

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fn vzip(self) -> V

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

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impl<T> ErasedDestructor for T
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impl<T> MaybeSendSync for 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