Struct rustc_middle::ty::CaptureInfo [−][src]
pub struct CaptureInfo<'tcx> { pub capture_kind_expr_id: Option<HirId>, pub path_expr_id: Option<HirId>, pub capture_kind: UpvarCapture<'tcx>, }
Part of MinCaptureInformationMap
; describes the capture kind (&, &mut, move)
for a particular capture as well as identifying the part of the source code
that triggered this capture to occur.
Fields
capture_kind_expr_id: Option<HirId>
Expr Id pointing to use that resulted in selecting the current capture kind
Eg:
let mut t = (0,1); let c = || { println!("{}",t); // L1 t.1 = 4; // L2 };
capture_kind_expr_id
will point to the use on L2 and path_expr_id
will point to the
use on L1.
If the user doesn’t enable feature capture_disjoint_fields
(RFC 2229) then, it is
possible that we don’t see the use of a particular place resulting in capture_kind_expr_id being
None. In such case we fallback on uvpars_mentioned for span.
Eg:
let x = 5; let c = || { let _ = x };
In this example, if capture_disjoint_fields
is not set, then x will be captured,
but we won’t see it being used during capture analysis, since it’s essentially a discard.
path_expr_id: Option<HirId>
Expr Id pointing to use that resulted the corresponding place being captured
See capture_kind_expr_id
for example.
capture_kind: UpvarCapture<'tcx>
Capture mode that was selected
Trait Implementations
impl<'tcx> Clone for CaptureInfo<'tcx>
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fn clone(&self) -> CaptureInfo<'tcx>
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pub fn clone_from(&mut self, source: &Self)
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impl<'tcx> Copy for CaptureInfo<'tcx>
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impl<'tcx> Debug for CaptureInfo<'tcx>
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impl<'tcx, __D: TyDecoder<'tcx>> Decodable<__D> for CaptureInfo<'tcx>
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impl<'tcx, __E: TyEncoder<'tcx>> Encodable<__E> for CaptureInfo<'tcx>
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impl<'tcx, '__ctx> HashStable<StableHashingContext<'__ctx>> for CaptureInfo<'tcx>
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fn hash_stable(
&self,
__hcx: &mut StableHashingContext<'__ctx>,
__hasher: &mut StableHasher
)
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&self,
__hcx: &mut StableHashingContext<'__ctx>,
__hasher: &mut StableHasher
)
impl<'tcx> PartialEq<CaptureInfo<'tcx>> for CaptureInfo<'tcx>
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fn eq(&self, other: &CaptureInfo<'tcx>) -> bool
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fn ne(&self, other: &CaptureInfo<'tcx>) -> bool
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impl<'tcx> StructuralPartialEq for CaptureInfo<'tcx>
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impl<'tcx> TypeFoldable<'tcx> for CaptureInfo<'tcx>
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fn super_fold_with<__F: TypeFolder<'tcx>>(self, __folder: &mut __F) -> Self
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fn super_visit_with<__F: TypeVisitor<'tcx>>(
&self,
__folder: &mut __F
) -> ControlFlow<__F::BreakTy>
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&self,
__folder: &mut __F
) -> ControlFlow<__F::BreakTy>
fn fold_with<F: TypeFolder<'tcx>>(self, folder: &mut F) -> Self
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fn visit_with<V: TypeVisitor<'tcx>>(
&self,
visitor: &mut V
) -> ControlFlow<V::BreakTy>
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&self,
visitor: &mut V
) -> ControlFlow<V::BreakTy>
fn has_vars_bound_at_or_above(&self, binder: DebruijnIndex) -> bool
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fn has_vars_bound_above(&self, binder: DebruijnIndex) -> bool
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fn has_escaping_bound_vars(&self) -> 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_opaque_types(&self) -> bool
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fn references_error(&self) -> bool
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fn has_param_types_or_consts(&self) -> bool
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fn has_infer_regions(&self) -> bool
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fn has_infer_types(&self) -> bool
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fn has_infer_types_or_consts(&self) -> bool
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fn needs_infer(&self) -> bool
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fn has_placeholders(&self) -> bool
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fn needs_subst(&self) -> bool
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fn has_free_regions(&self) -> bool
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fn has_erased_regions(&self) -> bool
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fn has_erasable_regions(&self) -> bool
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fn is_global(&self) -> bool
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fn has_late_bound_regions(&self) -> bool
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fn still_further_specializable(&self) -> bool
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Auto Trait Implementations
impl<'tcx> RefUnwindSafe for CaptureInfo<'tcx>
impl<'tcx> !Send for CaptureInfo<'tcx>
impl<'tcx> !Sync for CaptureInfo<'tcx>
impl<'tcx> Unpin for CaptureInfo<'tcx>
impl<'tcx> UnwindSafe for CaptureInfo<'tcx>
Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<'tcx, T> ArenaAllocatable<'tcx, ()> for T where
T: Copy,
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T: Copy,
pub fn allocate_on(Self, &'a Arena<'tcx>) -> &'a mut T
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pub fn allocate_from_iter(
&'a Arena<'tcx>,
impl IntoIterator<Item = T>
) -> &'a mut [T]ⓘ
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&'a Arena<'tcx>,
impl IntoIterator<Item = T>
) -> &'a mut [T]ⓘ
impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
pub fn borrow_mut(&mut self) -> &mut T
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impl<'a, T> Captures<'a> for T where
T: ?Sized,
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T: ?Sized,
impl<T> From<T> for T
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T> MaybeResult<T> for T
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type Error = !
pub fn from(Result<T, <T as MaybeResult<T>>::Error>) -> T
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pub fn to_result(self) -> Result<T, <T as MaybeResult<T>>::Error>
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impl<'tcx, T> Subst<'tcx> for T where
T: TypeFoldable<'tcx>,
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T: TypeFoldable<'tcx>,
pub fn subst_spanned(Self, TyCtxt<'tcx>, &[GenericArg<'tcx>], Option<Span>) -> T
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fn subst(self, tcx: TyCtxt<'tcx>, substs: &[GenericArg<'tcx>]) -> Self
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impl<T> ToOwned for T where
T: Clone,
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T: Clone,
type Owned = T
The resulting type after obtaining ownership.
pub fn to_owned(&self) -> T
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pub fn clone_into(&self, target: &mut T)
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impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.