pub enum RegionVariableOrigin {
MiscVariable(Span),
PatternRegion(Span),
BorrowRegion(Span),
Autoref(Span),
Coercion(Span),
RegionParameterDefinition(Span, Symbol),
BoundRegion(Span, BoundRegionKind, BoundRegionConversionTime),
UpvarRegion(UpvarId, Span),
Nll(NllRegionVariableOrigin),
}
Expand description
Reasons to create a region inference variable.
See error_reporting
module for more details.
Variants§
MiscVariable(Span)
Region variables created for ill-categorized reasons.
They mostly indicate places in need of refactoring.
PatternRegion(Span)
Regions created by a &P
or [...]
pattern.
BorrowRegion(Span)
Regions created by &
operator.
Autoref(Span)
Regions created as part of an autoref of a method receiver.
Coercion(Span)
Regions created as part of an automatic coercion.
RegionParameterDefinition(Span, Symbol)
Region variables created as the values for early-bound regions.
FIXME(@lcnr): This should also store a DefId
, similar to
TypeVariableOrigin
.
BoundRegion(Span, BoundRegionKind, BoundRegionConversionTime)
Region variables created when instantiating a binder with existential variables, e.g. when calling a function or method.
UpvarRegion(UpvarId, Span)
Nll(NllRegionVariableOrigin)
This origin is used for the inference variables that we create during NLL region processing.
Implementations§
Trait Implementations§
Source§impl Clone for RegionVariableOrigin
impl Clone for RegionVariableOrigin
Source§fn clone(&self) -> RegionVariableOrigin
fn clone(&self) -> RegionVariableOrigin
1.0.0 · Source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moreSource§impl Debug for RegionVariableOrigin
impl Debug for RegionVariableOrigin
impl Copy for RegionVariableOrigin
Auto Trait Implementations§
impl DynSend for RegionVariableOrigin
impl DynSync for RegionVariableOrigin
impl Freeze for RegionVariableOrigin
impl RefUnwindSafe for RegionVariableOrigin
impl Send for RegionVariableOrigin
impl Sync for RegionVariableOrigin
impl Unpin for RegionVariableOrigin
impl UnwindSafe for RegionVariableOrigin
Blanket Implementations§
Source§impl<'tcx, T> ArenaAllocatable<'tcx, IsCopy> for Twhere
T: Copy,
impl<'tcx, T> ArenaAllocatable<'tcx, IsCopy> for Twhere
T: Copy,
fn allocate_on(self, arena: &'tcx Arena<'tcx>) -> &'tcx mut T
fn allocate_from_iter( arena: &'tcx Arena<'tcx>, iter: impl IntoIterator<Item = T>, ) -> &'tcx mut [T]
Source§impl<'tcx, T> ArenaAllocatable<'tcx, IsCopy> for Twhere
T: Copy,
impl<'tcx, T> ArenaAllocatable<'tcx, IsCopy> for Twhere
T: Copy,
fn allocate_on(self, arena: &'tcx Arena<'tcx>) -> &'tcx mut T
fn allocate_from_iter( arena: &'tcx Arena<'tcx>, iter: impl IntoIterator<Item = T>, ) -> &'tcx mut [T]
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
Source§impl<T> CloneToUninit for Twhere
T: Clone,
impl<T> CloneToUninit for Twhere
T: Clone,
Source§unsafe fn clone_to_uninit(&self, dst: *mut T)
unsafe fn clone_to_uninit(&self, dst: *mut T)
clone_to_uninit
)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>
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<T> IntoEither for T
impl<T> IntoEither for T
Source§fn into_either(self, into_left: bool) -> Either<Self, Self>
fn into_either(self, into_left: bool) -> Either<Self, Self>
self
into a Left
variant of Either<Self, Self>
if into_left
is true
.
Converts self
into a Right
variant of Either<Self, Self>
otherwise. Read moreSource§fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
self
into a Left
variant of Either<Self, Self>
if into_left(&self)
returns true
.
Converts self
into a Right
variant of Either<Self, Self>
otherwise. Read moreSource§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<I, T, U> Upcast<I, U> for Twhere
U: UpcastFrom<I, T>,
impl<I, T, U> Upcast<I, U> for Twhere
U: UpcastFrom<I, T>,
Source§impl<I, T> UpcastFrom<I, T> for T
impl<I, T> UpcastFrom<I, T> for T
fn upcast_from(from: T, _tcx: I) -> 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,
impl<T> MaybeSendSync for T
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: 28 bytes
Size for each variant:
MiscVariable
: 12 bytesPatternRegion
: 12 bytesBorrowRegion
: 12 bytesAutoref
: 12 bytesCoercion
: 12 bytesRegionParameterDefinition
: 16 bytesBoundRegion
: 28 bytesUpvarRegion
: 24 bytesNll
: 24 bytes