Struct rustc_middle::ty::region::LateParamRegion

pub struct LateParamRegion {
    pub scope: DefId,
    pub bound_region: BoundRegionKind,
}

The parameter representation of late-bound function parameters, “some region at least as big as the scope fr.scope”.

Similar to a placeholder region as we create LateParam regions when entering a binder except they are always in the root universe and instead of using a boundvar to distinguish between others we use the DefId of the parameter. For this reason the bound_region field should basically always be BoundRegionKind::BrNamed as otherwise there is no way of telling different parameters apart.

Fields

scope: DefId

bound_region: BoundRegionKind

Trait Implementations

impl Clone for LateParamRegion

fn clone(&self) -> LateParamRegion

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for LateParamRegion

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

Formats the value using the given formatter.

impl<__D: TyDecoder> Decodable<__D> for LateParamRegion

fn decode(__decoder: &mut __D) -> Self

impl<__E: TyEncoder> Encodable<__E> for LateParamRegion

fn encode(&self, __encoder: &mut __E)

impl Hash for LateParamRegion

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

Feeds this value into the given Hasher.

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

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl<'__ctx> HashStable<StableHashingContext<'__ctx>> for LateParamRegion

fn hash_stable( &self, __hcx: &mut StableHashingContext<'__ctx>, __hasher: &mut StableHasher, )

impl PartialEq for LateParamRegion

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<'tcx> TypeFoldable<TyCtxt<'tcx>> for LateParamRegion

fn try_fold_with<F: FallibleTypeFolder<TyCtxt<'tcx>>>( self, _: &mut F, ) -> Result<Self, F::Error>

The entry point for folding. To fold a value t with a folder f call: t.try_fold_with(f).

fn fold_with<F: TypeFolder<TyCtxt<'tcx>>>(self, _: &mut F) -> Self

A convenient alternative to try_fold_with for use with infallible folders. Do not override this method, to ensure coherence with try_fold_with.

impl<'tcx> TypeVisitable<TyCtxt<'tcx>> for LateParamRegion

fn visit_with<F: TypeVisitor<TyCtxt<'tcx>>>(&self, _: &mut F) -> F::Result

The entry point for visiting. To visit a value t with a visitor v call: t.visit_with(v).

impl Copy for LateParamRegion

impl Eq for LateParamRegion

impl StructuralPartialEq for LateParamRegion

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: 20 bytes