Struct rustc::traits::query::type_op::subtype::Subtype [−][src]
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Fields
sub: Ty<'tcx>
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sup: Ty<'tcx>
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Methods
impl<'tcx> Subtype<'tcx>
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impl<'tcx> Subtype<'tcx>
pub fn new(sub: Ty<'tcx>, sup: Ty<'tcx>) -> Self
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pub fn new(sub: Ty<'tcx>, sup: Ty<'tcx>) -> Self
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Trait Implementations
impl<'tcx> Copy for Subtype<'tcx>
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impl<'tcx> Copy for Subtype<'tcx>
impl<'tcx> Clone for Subtype<'tcx>
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impl<'tcx> Clone for Subtype<'tcx>
fn clone(&self) -> Subtype<'tcx>
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fn clone(&self) -> Subtype<'tcx>
Returns a copy of the value. Read more
fn clone_from(&mut self, source: &Self)
1.0.0[src]
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source
. Read more
impl<'tcx> Debug for Subtype<'tcx>
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impl<'tcx> Debug for Subtype<'tcx>
fn fmt(&self, f: &mut Formatter) -> Result
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fn fmt(&self, f: &mut Formatter) -> Result
Formats the value using the given formatter. Read more
impl<'tcx> Hash for Subtype<'tcx>
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impl<'tcx> Hash for Subtype<'tcx>
fn hash<__H: Hasher>(&self, state: &mut __H)
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fn hash<__H: Hasher>(&self, state: &mut __H)
Feeds this value into the given [Hasher
]. Read more
fn hash_slice<H>(data: &[Self], state: &mut H) where
H: Hasher,
1.3.0[src]
fn hash_slice<H>(data: &[Self], state: &mut H) where
H: Hasher,
Feeds a slice of this type into the given [Hasher
]. Read more
impl<'tcx> PartialEq for Subtype<'tcx>
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impl<'tcx> PartialEq for Subtype<'tcx>
fn eq(&self, other: &Subtype<'tcx>) -> bool
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fn eq(&self, other: &Subtype<'tcx>) -> bool
This method tests for self
and other
values to be equal, and is used by ==
. Read more
fn ne(&self, other: &Subtype<'tcx>) -> bool
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fn ne(&self, other: &Subtype<'tcx>) -> bool
This method tests for !=
.
impl<'tcx> Eq for Subtype<'tcx>
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impl<'tcx> Eq for Subtype<'tcx>
fn assert_receiver_is_total_eq(&self)
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fn assert_receiver_is_total_eq(&self)
impl<'gcx: 'tcx, 'tcx> QueryTypeOp<'gcx, 'tcx> for Subtype<'tcx>
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impl<'gcx: 'tcx, 'tcx> QueryTypeOp<'gcx, 'tcx> for Subtype<'tcx>
type QueryResult = ()
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fn try_fast_path(
_tcx: TyCtxt<'_, 'gcx, 'tcx>,
key: &ParamEnvAnd<'tcx, Self>
) -> Option<()>
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fn try_fast_path(
_tcx: TyCtxt<'_, 'gcx, 'tcx>,
key: &ParamEnvAnd<'tcx, Self>
) -> Option<()>
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Give query the option for a simple fast path that never actually hits the tcx cache lookup etc. Return Some(r)
with a final result or None
to do the full path. Read more
fn perform_query(
tcx: TyCtxt<'_, 'gcx, 'tcx>,
canonicalized: Canonicalized<'gcx, ParamEnvAnd<'tcx, Self>>
) -> Fallible<CanonicalizedQueryResult<'gcx, ()>>
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fn perform_query(
tcx: TyCtxt<'_, 'gcx, 'tcx>,
canonicalized: Canonicalized<'gcx, ParamEnvAnd<'tcx, Self>>
) -> Fallible<CanonicalizedQueryResult<'gcx, ()>>
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Performs the actual query with the canonicalized key -- the real work happens here. This method is not given an infcx
because it shouldn't need one -- and if it had access to one, it might do things like invoke sub_regions
, which would be bad, because it would create subregion relationships that are not captured in the return value. Read more
fn shrink_to_tcx_lifetime<'a>(
v: &'a CanonicalizedQueryResult<'gcx, ()>
) -> &'a Canonical<'tcx, QueryResult<'tcx, ()>>
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fn shrink_to_tcx_lifetime<'a>(
v: &'a CanonicalizedQueryResult<'gcx, ()>
) -> &'a Canonical<'tcx, QueryResult<'tcx, ()>>
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Casts a lifted query result (which is in the gcx lifetime) into the tcx lifetime. This is always just an identity cast, but the generic code doesn't realize it -- put another way, in the generic code, we have a Lifted<'gcx, Self::QueryResult>
and we want to convert that to a Self::QueryResult
. This is not a priori valid, so we can't do it -- but in practice, it is always a no-op (e.g., the lifted form of a type, Ty<'gcx>
, is a subtype of Ty<'tcx>
). So we have to push the operation into the impls that know more specifically what QueryResult
is. This operation would (maybe) be nicer with something like HKTs or GATs, since then we could make QueryResult
parametric and 'gcx
and 'tcx
etc. Read more
fn fully_perform_into(
query_key: ParamEnvAnd<'tcx, Self>,
infcx: &InferCtxt<'_, 'gcx, 'tcx>,
output_query_region_constraints: &mut Vec<QueryRegionConstraint<'tcx>>
) -> Fallible<Self::QueryResult>
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fn fully_perform_into(
query_key: ParamEnvAnd<'tcx, Self>,
infcx: &InferCtxt<'_, 'gcx, 'tcx>,
output_query_region_constraints: &mut Vec<QueryRegionConstraint<'tcx>>
) -> Fallible<Self::QueryResult>
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impl<'tcx> TypeFoldable<'tcx> for Subtype<'tcx>
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impl<'tcx> TypeFoldable<'tcx> for Subtype<'tcx>
fn super_fold_with<'gcx: 'tcx, V: TypeFolder<'gcx, 'tcx>>(
&self,
folder: &mut V
) -> Self
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fn super_fold_with<'gcx: 'tcx, V: TypeFolder<'gcx, 'tcx>>(
&self,
folder: &mut V
) -> Self
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fn super_visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> bool
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fn super_visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> bool
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fn fold_with<'gcx: 'tcx, F: TypeFolder<'gcx, 'tcx>>(
&self,
folder: &mut F
) -> Self
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fn fold_with<'gcx: 'tcx, F: TypeFolder<'gcx, 'tcx>>(
&self,
folder: &mut F
) -> Self
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fn visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> bool
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fn visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> bool
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fn has_regions_bound_at_or_above(&self, binder: DebruijnIndex) -> bool
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fn has_regions_bound_at_or_above(&self, binder: DebruijnIndex) -> bool
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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. Read more
fn has_regions_bound_above(&self, binder: DebruijnIndex) -> bool
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fn has_regions_bound_above(&self, binder: DebruijnIndex) -> bool
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True if this self
has any regions that escape binder
(and hence are not bound by it). Read more
fn has_escaping_regions(&self) -> bool
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fn has_escaping_regions(&self) -> bool
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fn has_type_flags(&self, flags: TypeFlags) -> bool
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fn has_type_flags(&self, flags: TypeFlags) -> bool
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fn has_projections(&self) -> bool
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fn has_projections(&self) -> bool
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fn references_error(&self) -> bool
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fn references_error(&self) -> bool
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fn has_param_types(&self) -> bool
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fn has_param_types(&self) -> bool
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fn has_self_ty(&self) -> bool
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fn has_self_ty(&self) -> bool
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fn has_infer_types(&self) -> bool
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fn has_infer_types(&self) -> bool
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fn needs_infer(&self) -> bool
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fn needs_infer(&self) -> bool
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fn has_skol(&self) -> bool
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fn has_skol(&self) -> bool
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fn needs_subst(&self) -> bool
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fn needs_subst(&self) -> bool
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fn has_re_skol(&self) -> bool
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fn has_re_skol(&self) -> bool
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fn has_closure_types(&self) -> bool
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fn has_closure_types(&self) -> bool
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fn has_free_regions(&self) -> bool
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fn has_free_regions(&self) -> bool
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"Free" regions in this context means that it has any region that is not (a) erased or (b) late-bound. Read more
fn has_erasable_regions(&self) -> bool
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fn has_erasable_regions(&self) -> bool
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True if there any any un-erased free regions.
fn is_global(&self) -> bool
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fn is_global(&self) -> bool
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Indicates whether this value references only 'global' types/lifetimes that are the same regardless of what fn we are in. This is used for caching. Read more
fn has_late_bound_regions(&self) -> bool
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fn has_late_bound_regions(&self) -> bool
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True if there are any late-bound regions
fn visit_tys_shallow(
&self,
visit: impl FnMut(Ty<'tcx>) -> bool
) -> bool
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fn visit_tys_shallow(
&self,
visit: impl FnMut(Ty<'tcx>) -> bool
) -> bool
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A visitor that does not recurse into types, works like fn walk_shallow
in Ty
.
impl<'a, 'tcx> Lift<'tcx> for Subtype<'a>
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impl<'a, 'tcx> Lift<'tcx> for Subtype<'a>
type Lifted = Subtype<'tcx>
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fn lift_to_tcx<'b, 'gcx>(
&self,
tcx: TyCtxt<'b, 'gcx, 'tcx>
) -> Option<Subtype<'tcx>>
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fn lift_to_tcx<'b, 'gcx>(
&self,
tcx: TyCtxt<'b, 'gcx, 'tcx>
) -> Option<Subtype<'tcx>>
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impl<'a, 'tcx> HashStable<StableHashingContext<'a>> for Subtype<'tcx>
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impl<'a, 'tcx> HashStable<StableHashingContext<'a>> for Subtype<'tcx>
fn hash_stable<W: StableHasherResult>(
&self,
__ctx: &mut StableHashingContext<'a>,
__hasher: &mut StableHasher<W>
)
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fn hash_stable<W: StableHasherResult>(
&self,
__ctx: &mut StableHashingContext<'a>,
__hasher: &mut StableHasher<W>
)
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