Enum rustc_infer::infer::SubregionOrigin

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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),
    CompareImplMethodObligation {
        span: Span,
        impl_item_def_id: DefId,
        trait_item_def_id: DefId,
    },
    CompareImplTypeObligation {
        span: Span,
        impl_item_def_id: DefId,
        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

`CompareImplMethodObligation`

Fields

span: Span

impl_item_def_id: DefId

trait_item_def_id: DefId

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

`CompareImplTypeObligation`

Fields

span: Span

impl_item_def_id: DefId

trait_item_def_id: DefId

Comparing the signature and requirements of an impl associated type against the containing trait

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
) -> Self where
 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

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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 T where
T: 'static + ?Sized,

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pub fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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

const: unstable · source

pub 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,

const: unstable · source

pub 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

pub fn from(t: T) -> T

Performs the conversion.

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

const: unstable · source

pub fn into(self) -> U

Performs the conversion.

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impl<T> ToOwned for T where
T: Clone,

type Owned = T

The resulting type after obtaining ownership.

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pub fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more

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

🔬 This is a nightly-only experimental API. (toowned_clone_into)

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

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

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

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

Performs the conversion.

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

type Error = >::Error

The type returned in the event of a conversion error.

const: unstable · source

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

Performs the conversion.

source

impl<'a, T> Captures<'a> for T where
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
CompareImplMethodObligation: 24 bytes
CompareImplTypeObligation: 24 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)

CompareImplMethodObligation

Fields

CompareImplTypeObligation

Fields

Implementations

impl<'tcx> SubregionOrigin<'tcx>

pub fn span(&self) -> Span

pub fn from_obligation_cause<F>( cause: &ObligationCause<'tcx>, default: F) -> Self where 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 T where T: 'static + ?Sized,

pub fn type_id(&self) -> TypeId

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

pub fn borrow(&self) -> &T

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

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

impl<T> From<T> for T

pub fn from(t: T) -> T

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

pub fn into(self) -> U

impl<T> ToOwned for T where T: Clone,

type Owned = T

pub fn to_owned(&self) -> T

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

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

type Error = Infallible

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

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

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

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

impl<'a, T> Captures<'a> for T where 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)`

`CompareImplMethodObligation`

`CompareImplTypeObligation`

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

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

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

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

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

impl<T> ToOwned for T where
T: Clone,

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

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

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