Struct rustc_ty_utils::opaque_types::OpaqueTypeCollector
source · struct OpaqueTypeCollector<'tcx> {
tcx: TyCtxt<'tcx>,
opaques: Vec<LocalDefId>,
item: LocalDefId,
seen: FxHashSet<LocalDefId>,
span: Option<Span>,
mode: CollectionMode,
}
Fields§
§tcx: TyCtxt<'tcx>
§opaques: Vec<LocalDefId>
§item: LocalDefId
The DefId
of the item which we are collecting opaque types for.
seen: FxHashSet<LocalDefId>
Avoid infinite recursion due to recursive declarations.
span: Option<Span>
§mode: CollectionMode
Implementations§
source§impl<'tcx> OpaqueTypeCollector<'tcx>
impl<'tcx> OpaqueTypeCollector<'tcx>
fn new(tcx: TyCtxt<'tcx>, item: LocalDefId) -> Self
fn span(&self) -> Span
fn visit_spanned(&mut self, span: Span, value: impl TypeVisitable<TyCtxt<'tcx>>)
fn parent_impl_trait_ref(&self) -> Option<TraitRef<'tcx>>
fn parent(&self) -> Option<LocalDefId>
sourcefn check_tait_defining_scope(&self, opaque_def_id: LocalDefId) -> bool
fn check_tait_defining_scope(&self, opaque_def_id: LocalDefId) -> bool
Returns true
if opaque_hir_id
is a sibling or a child of a sibling of self.item
.
Example:
ⓘ
pub mod foo {
pub mod bar {
pub trait Bar { /* ... */ }
pub type Baz = impl Bar;
fn f1() -> Baz { /* ... */ }
}
fn f2() -> bar::Baz { /* ... */ }
}
and opaque_def_id
is the DefId
of the definition of the opaque type Baz
.
For the above example, this function returns true
for f1
and false
for f2
.
fn collect_taits_declared_in_body(&mut self)
fn visit_opaque_ty(&mut self, alias_ty: &AliasTy<'tcx>)
Trait Implementations§
source§impl<'tcx> SpannedTypeVisitor<'tcx> for OpaqueTypeCollector<'tcx>
impl<'tcx> SpannedTypeVisitor<'tcx> for OpaqueTypeCollector<'tcx>
source§impl<'tcx> TypeVisitor<TyCtxt<'tcx>> for OpaqueTypeCollector<'tcx>
impl<'tcx> TypeVisitor<TyCtxt<'tcx>> for OpaqueTypeCollector<'tcx>
fn visit_ty(&mut self, t: Ty<'tcx>)
type Result = ()
fn visit_binder<T>(&mut self, t: &<I as Interner>::Binder<T>) -> Self::Resultwhere
T: TypeVisitable<I>,
fn visit_region(&mut self, _r: <I as Interner>::Region) -> Self::Result
fn visit_const(&mut self, c: <I as Interner>::Const) -> Self::Result
fn visit_predicate(&mut self, p: <I as Interner>::Predicate) -> Self::Result
Auto Trait Implementations§
impl<'tcx> DynSend for OpaqueTypeCollector<'tcx>
impl<'tcx> DynSync for OpaqueTypeCollector<'tcx>
impl<'tcx> Freeze for OpaqueTypeCollector<'tcx>
impl<'tcx> !RefUnwindSafe for OpaqueTypeCollector<'tcx>
impl<'tcx> !Send for OpaqueTypeCollector<'tcx>
impl<'tcx> !Sync for OpaqueTypeCollector<'tcx>
impl<'tcx> Unpin for OpaqueTypeCollector<'tcx>
impl<'tcx> !UnwindSafe for OpaqueTypeCollector<'tcx>
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
source§impl<T, R> CollectAndApply<T, R> for T
impl<T, R> CollectAndApply<T, R> for T
source§impl<T> Filterable for T
impl<T> Filterable for T
source§fn filterable(
self,
filter_name: &'static str
) -> RequestFilterDataProvider<T, fn(_: DataRequest<'_>) -> bool>
fn filterable( self, filter_name: &'static str ) -> RequestFilterDataProvider<T, fn(_: DataRequest<'_>) -> bool>
Creates a filterable data provider with the given name for debugging. Read more
source§impl<T> Instrument for T
impl<T> Instrument for T
source§fn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
source§fn in_current_span(self) -> Instrumented<Self>
fn in_current_span(self) -> Instrumented<Self>
source§impl<P> IntoQueryParam<P> for P
impl<P> IntoQueryParam<P> for P
fn into_query_param(self) -> P
source§impl<T> MaybeResult<T> for T
impl<T> MaybeResult<T> for T
source§impl<T> Pointable for T
impl<T> Pointable for T
source§impl<'tcx, T> ToPredicate<'tcx, T> for T
impl<'tcx, T> ToPredicate<'tcx, T> for T
fn to_predicate(self, _tcx: TyCtxt<'tcx>) -> T
source§impl<Tcx, T> Value<Tcx> for Twhere
Tcx: DepContext,
impl<Tcx, T> Value<Tcx> for Twhere
Tcx: DepContext,
default fn from_cycle_error( tcx: Tcx, cycle_error: &CycleError, _guar: ErrorGuaranteed ) -> T
source§impl<T> WithSubscriber for T
impl<T> WithSubscriber for T
source§fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
source§fn with_current_subscriber(self) -> WithDispatch<Self>
fn with_current_subscriber(self) -> WithDispatch<Self>
impl<'a, T> Captures<'a> for Twhere
T: ?Sized,
impl<T> ErasedDestructor for Twhere
T: 'static,
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: 88 bytes