Enum rustc_hir::def::LifetimeRes
source · 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
HACK: This is used to recover the NodeId of an elided lifetime.
Trait Implementations
sourceimpl Clone for LifetimeRes
impl Clone for LifetimeRes
sourcefn clone(&self) -> LifetimeRes
fn clone(&self) -> LifetimeRes
1.0.0 · sourcefn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresourceimpl Debug for LifetimeRes
impl Debug for LifetimeRes
sourceimpl Hash for LifetimeRes
impl Hash for LifetimeRes
sourceimpl PartialEq<LifetimeRes> for LifetimeRes
impl PartialEq<LifetimeRes> for LifetimeRes
sourcefn eq(&self, other: &LifetimeRes) -> bool
fn eq(&self, other: &LifetimeRes) -> bool
impl Copy for LifetimeRes
impl Eq for LifetimeRes
impl StructuralEq for LifetimeRes
impl StructuralPartialEq for LifetimeRes
Auto Trait Implementations
impl RefUnwindSafe for LifetimeRes
impl Send for LifetimeRes
impl Sync for LifetimeRes
impl Unpin for LifetimeRes
impl UnwindSafe for LifetimeRes
Blanket Implementations
sourceimpl<'tcx, T> ArenaAllocatable<'tcx, IsCopy> for Twhere
T: Copy,
impl<'tcx, T> ArenaAllocatable<'tcx, IsCopy> for Twhere
T: Copy,
fn allocate_on(self, arena: &'a Arena<'tcx>) -> &'a mut T
fn allocate_from_iter(
arena: &'a Arena<'tcx>,
iter: impl IntoIterator<Item = T>
) -> &'a mut [T]ⓘNotable traits for &[u8]impl Read for &[u8]impl Write for &mut [u8]
sourceimpl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut 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: 12 bytes
Size for each variant:
Param
: 8 bytesFresh
: 8 bytesInfer
: 0 bytesStatic
: 0 bytesError
: 0 bytesElidedAnchor
: 8 bytes