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

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.

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.

Infer

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

Static

Explicit 'static lifetime.

Error

Resolution failure.

ElidedAnchor

Fields

start: NodeId
end: NodeId

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

Trait Implementations

Returns a copy of the value. Read more

Performs copy-assignment from source. Read more

Formats the value using the given formatter. Read more

Feeds this value into the given Hasher. Read more

Feeds a slice of this type into the given Hasher. Read more

This method tests for self and other values to be equal, and is used by ==. Read more

This method tests for !=.

Auto Trait Implementations

Blanket Implementations

Gets the TypeId of self. Read more

Immutably borrows from an owned value. Read more

Mutably borrows from an owned value. Read more

Returns the argument unchanged.

Calls U::from(self).

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

The resulting type after obtaining ownership.

Creates owned data from borrowed data, usually by cloning. Read more

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

The type returned in the event of a conversion error.

Performs the conversion.

The type returned in the event of a conversion 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