struct OpaqueTypeCollector<'tcx> {
    tcx: TyCtxt<'tcx>,
    opaques: Vec<LocalDefId>,
    item: LocalDefId,
    seen: FxHashSet<LocalDefId>,
    span: Option<Span>,
    mode: CollectionMode,
}

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§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§

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impl<'tcx> OpaqueTypeCollector<'tcx>

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fn new(tcx: TyCtxt<'tcx>, item: LocalDefId) -> Self

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fn span(&self) -> Span

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fn visit_spanned(&mut self, span: Span, value: impl TypeVisitable<TyCtxt<'tcx>>)

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fn parent_impl_trait_ref(&self) -> Option<TraitRef<'tcx>>

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fn parent(&self) -> Option<LocalDefId>

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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.

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fn collect_taits_declared_in_body(&mut self)

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fn visit_opaque_ty(&mut self, alias_ty: &AliasTy<'tcx>)

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impl<'tcx> SpannedTypeVisitor<'tcx> for OpaqueTypeCollector<'tcx>

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fn visit(&mut self, span: Span, value: impl TypeVisitable<TyCtxt<'tcx>>)

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type Result = ()

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impl<'tcx> TypeVisitor<TyCtxt<'tcx>> for OpaqueTypeCollector<'tcx>

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fn visit_ty(&mut self, t: Ty<'tcx>)

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type Result = ()

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fn visit_binder<T>(&mut self, t: &<I as Interner>::Binder<T>) -> Self::Result
where T: TypeVisitable<I>,

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fn visit_region(&mut self, _r: <I as Interner>::Region) -> Self::Result

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fn visit_const(&mut self, c: <I as Interner>::Const) -> Self::Result

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fn visit_predicate(&mut self, p: <I as Interner>::Predicate) -> Self::Result

Auto Trait Implementations§

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impl<'tcx> DynSend for OpaqueTypeCollector<'tcx>

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impl<'tcx> DynSync for OpaqueTypeCollector<'tcx>

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impl<'tcx> Freeze for OpaqueTypeCollector<'tcx>

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impl<'tcx> !RefUnwindSafe for OpaqueTypeCollector<'tcx>

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impl<'tcx> !Send for OpaqueTypeCollector<'tcx>

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impl<'tcx> !Sync for OpaqueTypeCollector<'tcx>

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impl<'tcx> Unpin for OpaqueTypeCollector<'tcx>

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impl<'tcx> !UnwindSafe for OpaqueTypeCollector<'tcx>

Blanket Implementations§

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impl<T> Aligned for T

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const ALIGN: Alignment = _

Alignment of Self.
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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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

Mutably borrows from an owned value. Read more
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impl<T, R> CollectAndApply<T, R> for T

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fn collect_and_apply<I, F>(iter: I, f: F) -> R
where I: Iterator<Item = T>, F: FnOnce(&[T]) -> R,

Equivalent to f(&iter.collect::<Vec<_>>()).

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type Output = R

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impl<T> Filterable for T

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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
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

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

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impl<P> IntoQueryParam<P> for P

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impl<T> MaybeResult<T> for T

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type Error = !

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fn from(_: Result<T, <T as MaybeResult<T>>::Error>) -> T

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fn to_result(self) -> Result<T, <T as MaybeResult<T>>::Error>

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impl<T> Pointable for T

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const ALIGN: usize = _

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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impl<T> Same for T

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type Output = T

Should always be Self
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impl<'tcx, T> ToPredicate<'tcx, T> for T

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fn to_predicate(self, _tcx: TyCtxt<'tcx>) -> T

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

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<V, T> VZip<V> for T
where V: MultiLane<T>,

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fn vzip(self) -> V

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impl<Tcx, T> Value<Tcx> for T
where Tcx: DepContext,

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default fn from_cycle_error( tcx: Tcx, cycle_error: &CycleError, _guar: ErrorGuaranteed ) -> T

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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more
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impl<'a, T> Captures<'a> for T
where T: ?Sized,

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impl<T> ErasedDestructor for T
where 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