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`

Fields

start: NodeId

end: NodeId

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

Trait Implementations

source

impl Clone for LifetimeRes

source

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

source

impl Debug for LifetimeRes

source

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

Formats the value using the given formatter. Read more

source

impl Hash for LifetimeRes

source

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,

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

source

impl PartialEq<LifetimeRes> for LifetimeRes

source

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

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

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. Read more

source

impl StructuralEq for LifetimeRes

source

impl StructuralPartialEq for LifetimeRes

Auto Trait Implementations

impl RefUnwindSafe for LifetimeRes

impl UnwindSafe for LifetimeRes

Blanket Implementations

source

impl<T> Any for Twhere
T: 'static + ?Sized,

source

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

source

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

source

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

source

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]`

source

impl<T> Borrow<T> for Twhere
T: ?Sized,

const: unstable · source

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

source

impl<T> BorrowMut<T> for Twhere
T: ?Sized,

const: unstable · source

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

source

impl<T> From<T> for T

const: unstable · source

fn from(t: T) -> T

Returns the argument unchanged.

source

impl<T, U> Into for Twhere
U: From<T>,

const: unstable · source

fn into(self) -> U

Calls U::from(self).

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

source

impl<T> ToOwned for Twhere
T: Clone,

type Owned = T

The resulting type after obtaining ownership.

source

fn to_owned(&self) -> T

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

source

fn clone_into(&self, target: &mut T)

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

source

impl<T, U> TryFrom for Twhere
U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

fn try_from(value: U) -> Result<T, <T as TryFrom>::Error>

Performs the conversion.

source

impl<T, U> TryInto for Twhere
U: TryFrom<T>,

type Error = >::Error

The type returned in the event of a conversion error.

const: unstable · source

fn try_into(self) -> Result<U, >::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

Enum rustc_hir::def::LifetimeRes

Variants

Param

Fields

Fresh

Fields

Infer

Static

Error

ElidedAnchor

Fields

Trait Implementations

impl Clone for LifetimeRes

fn clone(&self) -> LifetimeRes

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

impl Debug for LifetimeRes

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

impl Hash for LifetimeRes

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

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

impl PartialEq<LifetimeRes> for LifetimeRes

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

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

impl<T> Any for Twhere T: 'static + ?Sized,

fn type_id(&self) -> TypeId

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]

impl<T> Borrow<T> for Twhere T: ?Sized,

fn borrow(&self) -> &T

impl<T> BorrowMut<T> for Twhere T: ?Sized,

fn borrow_mut(&mut self) -> &mut T

impl<T> From<T> for T

fn from(t: T) -> T

impl<T, U> Into<U> for Twhere U: From<T>,

fn into(self) -> U

impl<T> ToOwned for Twhere T: Clone,

type Owned = T

fn to_owned(&self) -> T

fn clone_into(&self, target: &mut T)

impl<T, U> TryFrom<U> for Twhere U: Into<T>,

type Error = Infallible

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

impl<T, U> TryInto<U> for Twhere U: TryFrom<T>,

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

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

Layout

`Param`

`Fresh`

`Infer`

`Static`

`Error`

`ElidedAnchor`

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

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

impl<T> Any for Twhere
T: 'static + ?Sized,

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

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]`

impl<T> Borrow<T> for Twhere
T: ?Sized,

impl<T> BorrowMut<T> for Twhere
T: ?Sized,

impl<T, U> Into<U> for Twhere
U: From<T>,

impl<T> ToOwned for Twhere
T: Clone,

impl<T, U> TryFrom<U> for Twhere
U: Into<T>,

impl<T, U> TryInto<U> for Twhere
U: TryFrom<T>,