Enum rustc_trait_selection::infer::RegionVariableOrigin

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pub enum RegionVariableOrigin {
    MiscVariable(Span),
    PatternRegion(Span),
    AddrOfRegion(Span),
    Autoref(Span),
    Coercion(Span),
    EarlyBoundRegion(Span, Symbol),
    LateBoundRegion(Span, BoundRegionKind, LateBoundRegionConversionTime),
    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, mostly indicates places in need of refactoring

`PatternRegion(Span)`

Regions created by a &P or [...] pattern

`AddrOfRegion(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

`EarlyBoundRegion(Span, Symbol)`

Region variables created as the values for early-bound regions

`LateBoundRegion(Span, BoundRegionKind, LateBoundRegionConversionTime)`

Region variables created for bound regions in a function or method that is called

`UpvarRegion(UpvarId, Span)`

`Nll(NllRegionVariableOrigin)`

This origin is used for the inference variables that we create during NLL region processing.

Auto Trait Implementations

impl RefUnwindSafe for RegionVariableOrigin

impl !Send for RegionVariableOrigin

impl !Sync for RegionVariableOrigin

impl Unpin for RegionVariableOrigin

impl UnwindSafe for RegionVariableOrigin

Blanket Implementations

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impl<T> Any for Twhere
T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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

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

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fn allocate_from_iter(
arena: &'a Arena<'tcx>,
iter: impl IntoIterator<Item = T>
) -> &'a mut [T]ⓘNotable traits for &[u8]`impl Read for &[u8]impl Write for &mut [u8]`

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impl<T> Borrow<T> for Twhere
T: ?Sized,

const: unstable · source

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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impl<T> BorrowMut<T> for Twhere
T: ?Sized,

const: unstable · source

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

Mutably borrows from an owned value. Read more

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impl<T> From<T> for T

const: unstable · source

fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into for Twhere
U: From<T>,

const: unstable · source

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<T> ToOwned for Twhere
T: Clone,

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<T, U> TryFrom for Twhere
U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

fn try_from(value: U) -> Result<T, <T as TryFrom>::Error>

Performs the conversion.

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impl<T, U> TryInto for Twhere
U: TryFrom<T>,

type Error = >::Error

The type returned in the event of a conversion error.

const: unstable · source

fn try_into(self) -> Result<U, >::Error>

Performs the conversion.

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: 8 bytes
PatternRegion: 8 bytes
AddrOfRegion: 8 bytes
Autoref: 8 bytes
Coercion: 8 bytes
EarlyBoundRegion: 12 bytes
LateBoundRegion: 28 bytes
UpvarRegion: 20 bytes
Nll: 16 bytes

Enum rustc_trait_selection::infer::RegionVariableOrigin

Variants

MiscVariable(Span)

PatternRegion(Span)

AddrOfRegion(Span)

Autoref(Span)

Coercion(Span)

EarlyBoundRegion(Span, Symbol)

LateBoundRegion(Span, BoundRegionKind, LateBoundRegionConversionTime)

UpvarRegion(UpvarId, Span)

Nll(NllRegionVariableOrigin)

Auto Trait Implementations

impl RefUnwindSafe for RegionVariableOrigin

impl !Send for RegionVariableOrigin

impl !Sync for RegionVariableOrigin

impl Unpin for RegionVariableOrigin

impl UnwindSafe for RegionVariableOrigin

Blanket Implementations

impl<T> Any for Twhere T: 'static + ?Sized,

fn type_id(&self) -> TypeId

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

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

fn allocate_from_iter( arena: &'a Arena<'tcx>, iter: impl IntoIterator<Item = T>) -> &'a mut [T]ⓘNotable traits for &[u8]impl Read for &[u8]impl Write for &mut [u8]

impl<T> Borrow<T> for Twhere T: ?Sized,

fn borrow(&self) -> &T

impl<T> BorrowMut<T> for Twhere T: ?Sized,

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

impl<T> From<T> for T

fn from(t: T) -> T

impl<T, U> Into<U> for Twhere U: From<T>,

fn into(self) -> U

impl<T> ToOwned for Twhere T: Clone,

type Owned = T

fn to_owned(&self) -> T

fn clone_into(&self, target: &mut T)

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

type Error = Infallible

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

impl<T, U> TryInto<U> for Twhere U: TryFrom<T>,

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

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Layout

`MiscVariable(Span)`

`PatternRegion(Span)`

`AddrOfRegion(Span)`

`Autoref(Span)`

`Coercion(Span)`

`EarlyBoundRegion(Span, Symbol)`

`LateBoundRegion(Span, BoundRegionKind, LateBoundRegionConversionTime)`

`UpvarRegion(UpvarId, Span)`

`Nll(NllRegionVariableOrigin)`

impl<T> Any for Twhere
T: 'static + ?Sized,

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

fn allocate_from_iter(
arena: &'a Arena<'tcx>,
iter: impl IntoIterator<Item = T>
) -> &'a mut [T]ⓘNotable traits for &[u8]`impl Read for &[u8]impl Write for &mut [u8]`

impl<T> Borrow<T> for Twhere
T: ?Sized,

impl<T> BorrowMut<T> for Twhere
T: ?Sized,

impl<T, U> Into<U> for Twhere
U: From<T>,

impl<T> ToOwned for Twhere
T: Clone,

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

impl<T, U> TryInto<U> for Twhere
U: TryFrom<T>,