Type Definition rustc_middle::ty::Region

type Region<'tcx> = &'tcx RegionKind;

Trait Implementations

impl<'tcx, D: TyDecoder<'tcx>> Decodable<D> for Region<'tcx>

fn decode(decoder: &mut D) -> Result<Self, D::Error>

impl<'tcx, E: TyEncoder<'tcx>> Encodable<E> for Region<'tcx>

fn encode(&self, e: &mut E) -> Result<(), E::Error>

impl<'a, 'tcx> Lift<'tcx> for Region<'a>

type Lifted = Region<'tcx>

fn lift_to_tcx(self, tcx: TyCtxt<'tcx>) -> Option<Self::Lifted>

impl<'tcx, P: Printer<'tcx>, '_> Print<'tcx, P> for Region<'_>

type Output = P::Region

type Error = P::Error

fn print(&self, cx: P) -> Result<Self::Output, Self::Error>

impl<'tcx> Relate<'tcx> for Region<'tcx>

fn relate<R: TypeRelation<'tcx>>(
    relation: &mut R,
    a: Region<'tcx>,
    b: Region<'tcx>
) -> RelateResult<'tcx, Region<'tcx>>

impl<'tcx> TypeFoldable<'tcx> for Region<'tcx>

fn super_fold_with<F: TypeFolder<'tcx>>(&self, _folder: &mut F) -> Self

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

fn super_visit_with<V: TypeVisitor<'tcx>>(
    &self,
    _visitor: &mut V
) -> ControlFlow<()>

fn visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> ControlFlow<()>

fn has_vars_bound_at_or_above(&self, binder: DebruijnIndex) -> bool

Returns true if self has any late-bound regions that are either bound by binder or bound by some binder outside of binder. If binder is ty::INNERMOST, this indicates whether there are any late-bound regions that appear free.

fn has_vars_bound_above(&self, binder: DebruijnIndex) -> bool

Returns true if this self has any regions that escape binder (and hence are not bound by it).

fn has_escaping_bound_vars(&self) -> bool

fn has_type_flags(&self, flags: TypeFlags) -> bool

fn has_projections(&self) -> bool

fn has_opaque_types(&self) -> bool

fn references_error(&self) -> bool

fn has_param_types_or_consts(&self) -> bool

fn has_infer_regions(&self) -> bool

fn has_infer_types(&self) -> bool

fn has_infer_types_or_consts(&self) -> bool

fn needs_infer(&self) -> bool

fn has_placeholders(&self) -> bool

fn needs_subst(&self) -> bool

fn has_free_regions(&self) -> bool

"Free" regions in this context means that it has any region that is not (a) erased or (b) late-bound.

fn has_erased_regions(&self) -> bool

fn has_erasable_regions(&self) -> bool

True if there are any un-erased free regions.

fn is_global(&self) -> bool

Indicates whether this value references only 'global' generic parameters that are the same regardless of what fn we are in. This is used for caching.

fn has_late_bound_regions(&self) -> bool

True if there are any late-bound regions

fn still_further_specializable(&self) -> bool

Indicates whether this value still has parameters/placeholders/inference variables which could be replaced later, in a way that would change the results of impl specialization.

fn visit_tys_shallow(
    &self,
    visit: impl FnMut(Ty<'tcx>) -> ControlFlow<()>
) -> ControlFlow<()>

A visitor that does not recurse into types, works like fn walk_shallow in Ty.