pub(crate) enum UseSpans<'tcx> {
    ClosureUse {
        closure_kind: ClosureKind,
        args_span: Span,
        capture_kind_span: Span,
        path_span: Span,
    },
    FnSelfUse {
        var_span: Span,
        fn_call_span: Span,
        fn_span: Span,
        kind: CallKind<'tcx>,
    },
    PatUse(Span),
    OtherUse(Span),
}
Expand description

The span(s) associated to a use of a place.

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ClosureUse

Fields

§closure_kind: ClosureKind

This is true if the captured variable was from a coroutine.

§args_span: Span

The span of the args of the closure, including the move keyword if it’s present.

§capture_kind_span: Span

The span of the use resulting in capture kind Check ty::CaptureInfo for more details

§path_span: Span

The span of the use resulting in the captured path Check ty::CaptureInfo for more details

The access is caused by capturing a variable for a closure.

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FnSelfUse

Fields

§var_span: Span

The span of the variable being moved

§fn_call_span: Span

The span of the method call on the variable

§fn_span: Span

The definition span of the method being called

§kind: CallKind<'tcx>

The access is caused by using a variable as the receiver of a method that takes ‘self’

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PatUse(Span)

This access is caused by a match or if let pattern.

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OtherUse(Span)

This access has a single span associated to it: common case.

Implementations§

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impl UseSpans<'_>

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pub(crate) fn args_or_use(self) -> Span

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pub(crate) fn var_or_use_path_span(self) -> Span

Returns the span of self, in the case of a ClosureUse returns the path_span

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pub(crate) fn var_or_use(self) -> Span

Returns the span of self, in the case of a ClosureUse returns the capture_kind_span

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pub(crate) fn coroutine_kind(self) -> Option<CoroutineKind>

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pub(crate) fn args_subdiag( self, dcx: &DiagCtxt, err: &mut Diag<'_>, f: impl FnOnce(Span) -> CaptureArgLabel )

Add a span label to the arguments of the closure, if it exists.

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pub(crate) fn var_path_only_subdiag( self, dcx: &DiagCtxt, err: &mut Diag<'_>, action: InitializationRequiringAction )

Add a span label to the use of the captured variable, if it exists. only adds label to the path_span

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pub(crate) fn var_subdiag( self, dcx: &DiagCtxt, err: &mut Diag<'_>, kind: Option<BorrowKind>, f: impl FnOnce(ClosureKind, Span) -> CaptureVarCause )

Add a subdiagnostic to the use of the captured variable, if it exists.

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pub(crate) fn for_closure(&self) -> bool

Returns false if this place is not used in a closure.

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pub(crate) fn for_coroutine(&self) -> bool

Returns false if this place is not used in a coroutine.

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pub(crate) fn or_else<F>(self, if_other: F) -> Self
where F: FnOnce() -> Self,

Trait Implementations§

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impl<'tcx> Clone for UseSpans<'tcx>

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fn clone(&self) -> UseSpans<'tcx>

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<'tcx> Debug for UseSpans<'tcx>

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

Formats the value using the given formatter. Read more
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impl<'tcx> PartialEq for UseSpans<'tcx>

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fn eq(&self, other: &UseSpans<'tcx>) -> bool

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl<'tcx> Copy for UseSpans<'tcx>

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impl<'tcx> Eq for UseSpans<'tcx>

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impl<'tcx> StructuralPartialEq for UseSpans<'tcx>

Auto Trait Implementations§

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impl<'tcx> DynSend for UseSpans<'tcx>

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impl<'tcx> DynSync for UseSpans<'tcx>

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

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impl<'tcx> Send for UseSpans<'tcx>

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impl<'tcx> Sync for UseSpans<'tcx>

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impl<'tcx> Unpin for UseSpans<'tcx>

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impl<'tcx> !UnwindSafe for UseSpans<'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> AnyEq for T
where T: Any + PartialEq,

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fn equals(&self, other: &(dyn Any + 'static)) -> bool

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fn as_any(&self) -> &(dyn Any + 'static)

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impl<'tcx, T> ArenaAllocatable<'tcx, IsCopy> for T
where T: Copy,

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fn allocate_on<'a>(self, arena: &'a Arena<'tcx>) -> &'a mut T

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fn allocate_from_iter<'a>( arena: &'a Arena<'tcx>, iter: impl IntoIterator<Item = T> ) -> &'a mut [T]

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impl<'tcx, T> ArenaAllocatable<'tcx, IsCopy> for T
where T: Copy,

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fn allocate_on<'a>(self, arena: &'a Arena<'tcx>) -> &'a mut T

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fn allocate_from_iter<'a>( arena: &'a Arena<'tcx>, iter: impl IntoIterator<Item = T> ) -> &'a mut [T]

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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<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Checks if this value is equivalent to the given key. Read more
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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Checks if this value is equivalent to the given key. Read more
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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Compare self to key and return true if they are equal.
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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<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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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,

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impl<T> MaybeSendSync for T
where T: Send + Sync,

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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: 72 bytes

Size for each variant:

  • ClosureUse: 32 bytes
  • FnSelfUse: 72 bytes
  • PatUse: 12 bytes
  • OtherUse: 12 bytes