Enum rustc_infer::infer::SubregionOrigin

source ·

pub enum SubregionOrigin<'tcx> {
    Subtype(Box<TypeTrace<'tcx>>),
    RelateObjectBound(Span),
    RelateParamBound(Span, Ty<'tcx>, Option<Span>),
    RelateRegionParamBound(Span),
    Reborrow(Span),
    ReborrowUpvar(Span, UpvarId),
    DataBorrowed(Ty<'tcx>, Span),
    ReferenceOutlivesReferent(Ty<'tcx>, Span),
    CompareImplItemObligation {
        span: Span,
        impl_item_def_id: LocalDefId,
        trait_item_def_id: DefId,
    },
    CheckAssociatedTypeBounds {
        parent: Box<SubregionOrigin<'tcx>>,
        impl_item_def_id: LocalDefId,
        trait_item_def_id: DefId,
    },
}

Expand description

The origin of a r1 <= r2 constraint.

See error_reporting module for more details

Variants

`Subtype(Box<TypeTrace<'tcx>>)`

Arose from a subtyping relation

`RelateObjectBound(Span)`

When casting &'a T to an &'b Trait object, relating 'a to 'b

`RelateParamBound(Span, Ty<'tcx>, Option)`

Some type parameter was instantiated with the given type, and that type must outlive some region.

`RelateRegionParamBound(Span)`

The given region parameter was instantiated with a region that must outlive some other region.

`Reborrow(Span)`

Creating a pointer b to contents of another reference

`ReborrowUpvar(Span, UpvarId)`

Creating a pointer b to contents of an upvar

`DataBorrowed(Ty<'tcx>, Span)`

Data with type Ty<'tcx> was borrowed

`ReferenceOutlivesReferent(Ty<'tcx>, Span)`

(&’a &’b T) where a >= b

`CompareImplItemObligation`

Fields

span: Span

impl_item_def_id: LocalDefId

trait_item_def_id: DefId

Comparing the signature and requirements of an impl method against the containing trait.

`CheckAssociatedTypeBounds`

Fields

parent: Box<SubregionOrigin<'tcx>>

impl_item_def_id: LocalDefId

trait_item_def_id: DefId

Checking that the bounds of a trait’s associated type hold for a given impl

Implementations

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impl<'tcx> SubregionOrigin<'tcx>

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pub fn span(&self) -> Span

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pub fn from_obligation_cause<F>(
 cause: &ObligationCause<'tcx>,
 default: F
) -> Selfwhere
 F: FnOnce() -> Self,

Trait Implementations

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impl<'tcx> Clone for SubregionOrigin<'tcx>

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

Returns a copy of the value. Read more

1.0.0 · source

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more

source

impl<'tcx> Debug for SubregionOrigin<'tcx>

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

Formats the value using the given formatter. Read more

Auto Trait Implementations

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

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

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

impl<'tcx> Unpin for SubregionOrigin<'tcx>

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

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<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.

source

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.

source

impl<'a, T> Captures<'a> for Twhere
T: ?Sized,

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: 32 bytes

Size for each variant:

Subtype: 12 bytes
RelateObjectBound: 8 bytes
RelateParamBound: 28 bytes
RelateRegionParamBound: 8 bytes
Reborrow: 8 bytes
ReborrowUpvar: 20 bytes
DataBorrowed: 20 bytes
ReferenceOutlivesReferent: 20 bytes
CompareImplItemObligation: 20 bytes
CheckAssociatedTypeBounds: 20 bytes

Enum rustc_infer::infer::SubregionOrigin

Variants

Subtype(Box<TypeTrace<'tcx>>)

RelateObjectBound(Span)

RelateParamBound(Span, Ty<'tcx>, Option<Span>)

RelateRegionParamBound(Span)

Reborrow(Span)

ReborrowUpvar(Span, UpvarId)

DataBorrowed(Ty<'tcx>, Span)

ReferenceOutlivesReferent(Ty<'tcx>, Span)

CompareImplItemObligation

Fields

CheckAssociatedTypeBounds

Fields

Implementations

impl<'tcx> SubregionOrigin<'tcx>

pub fn span(&self) -> Span

pub fn from_obligation_cause<F>( cause: &ObligationCause<'tcx>, default: F) -> Selfwhere F: FnOnce() -> Self,

Trait Implementations

impl<'tcx> Clone for SubregionOrigin<'tcx>

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

fn clone_from(&mut self, source: &Self)

impl<'tcx> Debug for SubregionOrigin<'tcx>

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

Auto Trait Implementations

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

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

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

impl<'tcx> Unpin for SubregionOrigin<'tcx>

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

Blanket Implementations

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

fn type_id(&self) -> TypeId

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>

impl<'a, T> Captures<'a> for Twhere T: ?Sized,

Layout

`Subtype(Box<TypeTrace<'tcx>>)`

`RelateObjectBound(Span)`

`RelateParamBound(Span, Ty<'tcx>, Option<Span>)`

`RelateRegionParamBound(Span)`

`Reborrow(Span)`

`ReborrowUpvar(Span, UpvarId)`

`DataBorrowed(Ty<'tcx>, Span)`

`ReferenceOutlivesReferent(Ty<'tcx>, Span)`

`CompareImplItemObligation`

`CheckAssociatedTypeBounds`

pub fn from_obligation_cause<F>(
cause: &ObligationCause<'tcx>,
default: F
) -> Selfwhere
F: FnOnce() -> Self,

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

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>,

impl<'a, T> Captures<'a> for Twhere
T: ?Sized,