pub enum LifetimeRes {
    Param {
        param: LocalDefId,
        binder: NodeId,
    },
    Fresh {
        param: NodeId,
        binder: NodeId,
    },
    Infer,
    Static,
    Error,
    ElidedAnchor {
        start: NodeId,
        end: NodeId,
    },
}
Expand description

Resolution for a lifetime appearing in a type.

Variants§

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Param

Fields

§param: LocalDefId

Id of the generic parameter that introduced it.

§binder: NodeId

Id of the introducing place. That can be:

  • an item’s id, for the item’s generic parameters;
  • a TraitRef’s ref_id, identifying the for<...> binder;
  • a BareFn type’s id.

This information is used for impl-trait lifetime captures, to know when to or not to capture any given lifetime.

Successfully linked the lifetime to a generic parameter.

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Fresh

Fields

§param: NodeId

Id of the generic parameter that introduced it.

Creating the associated LocalDefId is the responsibility of lowering.

§binder: NodeId

Id of the introducing place. See Param.

Created a generic parameter for an anonymous lifetime.

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Infer

This variant is used for anonymous lifetimes that we did not resolve during late resolution. Those lifetimes will be inferred by typechecking.

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Static

Explicit 'static lifetime.

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Error

Resolution failure.

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ElidedAnchor

Fields

§start: NodeId

HACK: This is used to recover the NodeId of an elided lifetime.

Trait Implementations§

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impl Clone for LifetimeRes

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fn clone(&self) -> LifetimeRes

Returns a copy of the value. Read more
1.0.0 · source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for LifetimeRes

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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 Hash for LifetimeRes

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fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher. Read more
1.3.0 · source§

fn hash_slice<H>(data: &[Self], state: &mut H)where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl PartialEq<LifetimeRes> for LifetimeRes

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fn eq(&self, other: &LifetimeRes) -> bool

This method tests for self and other values to be equal, and is used by ==.
1.0.0 · source§

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl Copy for LifetimeRes

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impl Eq for LifetimeRes

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impl StructuralEq for LifetimeRes

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impl StructuralPartialEq for LifetimeRes

Auto Trait Implementations§

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<'tcx, T> ArenaAllocatable<'tcx, IsCopy> for Twhere T: Copy,

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fn allocate_on<'a>(self, arena: &'a Arena<'tcx>) -> &'a mut T

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fn allocate_from_iter<'a>( arena: &'a Arena<'tcx>, iter: impl IntoIterator<Item = T> ) -> &'a mut [T]

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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: 12 bytes

Size for each variant:

  • Param: 8 bytes
  • Fresh: 8 bytes
  • Infer: 0 bytes
  • Static: 0 bytes
  • Error: 0 bytes
  • ElidedAnchor: 8 bytes