Enum rustc_trait_selection::infer::SubregionOrigin

source · [−]

pub enum SubregionOrigin<'tcx> {
    Subtype(Box<TypeTrace<'tcx>, Global>),
    RelateObjectBound(Span),
    RelateParamBound(Span, &'tcx TyS<'tcx>, Option<Span>),
    RelateRegionParamBound(Span),
    Reborrow(Span),
    ReborrowUpvar(Span, UpvarId),
    DataBorrowed(&'tcx TyS<'tcx>, Span),
    ReferenceOutlivesReferent(&'tcx TyS<'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>, Global>)`

Arose from a subtyping relation

`RelateObjectBound(Span)`

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

`RelateParamBound(Span, &'tcx TyS<'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(&'tcx TyS<'tcx>, Span)`

Data with type Ty<'tcx> was borrowed

`ReferenceOutlivesReferent(&'tcx TyS<'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

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>

pub fn into(self) -> U

Performs the conversion.

source

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

type Owned = T

The resulting type after obtaining ownership.

source

pub fn to_owned(&self) -> T

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

source

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

source

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.

source

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.

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_trait_selection::infer::SubregionOrigin

Variants

Subtype(Box<TypeTrace<'tcx>, Global>)

RelateObjectBound(Span)

RelateParamBound(Span, &'tcx TyS<'tcx>, Option<Span>)

RelateRegionParamBound(Span)

Reborrow(Span)

ReborrowUpvar(Span, UpvarId)

DataBorrowed(&'tcx TyS<'tcx>, Span)

ReferenceOutlivesReferent(&'tcx TyS<'tcx>, Span)

CompareImplMethodObligation

Fields

CompareImplTypeObligation

Fields

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>

Layout

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

`RelateObjectBound(Span)`

`RelateParamBound(Span, &'tcx TyS<'tcx>, Option<Span>)`

`RelateRegionParamBound(Span)`

`Reborrow(Span)`

`ReborrowUpvar(Span, UpvarId)`

`DataBorrowed(&'tcx TyS<'tcx>, Span)`

`ReferenceOutlivesReferent(&'tcx TyS<'tcx>, Span)`

`CompareImplMethodObligation`

`CompareImplTypeObligation`

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>,