pub(crate) enum RegionErrorKind<'tcx> {
    TypeTestError {
        type_test: TypeTest<'tcx>,
    },
    UnexpectedHiddenRegion {
        span: Span,
        hidden_ty: Ty<'tcx>,
        key: OpaqueTypeKey<'tcx>,
        member_region: Region<'tcx>,
    },
    BoundUniversalRegionError {
        longer_fr: RegionVid,
        error_element: RegionElement,
        placeholder: PlaceholderRegion,
    },
    RegionError {
        fr_origin: NllRegionVariableOrigin,
        longer_fr: RegionVid,
        shorter_fr: RegionVid,
        is_reported: bool,
    },
}

Variants§

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TypeTestError

Fields

§type_test: TypeTest<'tcx>

A generic bound failure for a type test (T: 'a).

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UnexpectedHiddenRegion

Fields

§span: Span

The span for the member constraint.

§hidden_ty: Ty<'tcx>

The hidden type.

§key: OpaqueTypeKey<'tcx>

The opaque type.

§member_region: Region<'tcx>

The unexpected region.

An unexpected hidden region for an opaque type.

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BoundUniversalRegionError

Fields

§longer_fr: RegionVid

The placeholder free region.

§error_element: RegionElement

The region element that erroneously must be outlived by longer_fr.

§placeholder: PlaceholderRegion

The placeholder region.

Higher-ranked subtyping error.

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RegionError

Fields

§fr_origin: NllRegionVariableOrigin

The origin of the region.

§longer_fr: RegionVid

The region that should outlive shorter_fr.

§shorter_fr: RegionVid

The region that should be shorter, but we can’t prove it.

§is_reported: bool

Indicates whether this is a reported error. We currently only report the first error encountered and leave the rest unreported so as not to overwhelm the user.

Any other lifetime error.

Trait Implementations§

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impl<'tcx> Clone for RegionErrorKind<'tcx>

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fn clone(&self) -> RegionErrorKind<'tcx>

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<'tcx> Debug for RegionErrorKind<'tcx>

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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impl<'tcx> !RefUnwindSafe for RegionErrorKind<'tcx>

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impl<'tcx> !Send for RegionErrorKind<'tcx>

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impl<'tcx> !Sync for RegionErrorKind<'tcx>

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impl<'tcx> Unpin for RegionErrorKind<'tcx>

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impl<'tcx> !UnwindSafe for RegionErrorKind<'tcx>

Blanket Implementations§

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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> 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> ToOwned for Twhere T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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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: 64 bytes

Size for each variant:

  • TypeTestError: 64 bytes
  • UnexpectedHiddenRegion: 48 bytes
  • BoundUniversalRegionError: 56 bytes
  • RegionError: 40 bytes