Enum rustc_trait_selection::traits::SelectionError

source · [−]

pub enum SelectionError<'tcx> {
    Unimplemented,
    OutputTypeParameterMismatch(Binder<'tcx, TraitRef<'tcx>>, Binder<'tcx, TraitRef<'tcx>>, TypeError<'tcx>),
    TraitNotObjectSafe(DefId),
    NotConstEvaluatable(NotConstEvaluatable),
    Overflow,
    ErrorReporting,
    Ambiguous(Vec<DefId, Global>),
}

Variants

`Unimplemented`

The trait is not implemented.

`OutputTypeParameterMismatch(Binder<'tcx, TraitRef<'tcx>>, Binder<'tcx, TraitRef<'tcx>>, TypeError<'tcx>)`

After a closure impl has selected, its “outputs” were evaluated (which for closures includes the “input” type params) and they didn’t resolve. See confirm_poly_trait_refs for more.

`TraitNotObjectSafe(DefId)`

The trait pointed by DefId is not object safe.

`NotConstEvaluatable(NotConstEvaluatable)`

A given constant couldn’t be evaluated.

`Overflow`

Exceeded the recursion depth during type projection.

`ErrorReporting`

Signaling that an error has already been emitted, to avoid multiple errors being shown.

`Ambiguous(Vec<DefId, Global>)`

Multiple applicable impls where found. The DefIds correspond to all the impls’ Items.

Auto Trait Implementations

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

impl<'tcx> Send for SelectionError<'tcx>

impl<'tcx> Sync for SelectionError<'tcx>

impl<'tcx> Unpin for SelectionError<'tcx>

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

Blanket Implementations

source

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<'tcx, T> Subst<'tcx> for T where
T: TypeFoldable<'tcx>,

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pub fn subst_spanned(
 self,
 tcx: TyCtxt<'tcx>,
 substs: &[GenericArg<'tcx>],
 span: Option
) -> T

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fn subst(self, tcx: TyCtxt<'tcx>, substs: &[GenericArg<'tcx>]) -> Self

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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: 88 bytes

Size for each variant:

Unimplemented: 0 bytes
OutputTypeParameterMismatch: 87 bytes
TraitNotObjectSafe: 11 bytes
NotConstEvaluatable: 1 byte
Overflow: 0 bytes
ErrorReporting: 0 bytes
Ambiguous: 31 bytes

Enum rustc_trait_selection::traits::SelectionError

Variants

`Unimplemented`

`OutputTypeParameterMismatch(Binder<'tcx, TraitRef<'tcx>>, Binder<'tcx, TraitRef<'tcx>>, TypeError<'tcx>)`

`TraitNotObjectSafe(DefId)`

`NotConstEvaluatable(NotConstEvaluatable)`

`Overflow`

`ErrorReporting`

`Ambiguous(Vec<DefId, Global>)`

Auto Trait Implementations

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

impl<'tcx> Send for SelectionError<'tcx>

impl<'tcx> Sync for SelectionError<'tcx>

impl<'tcx> Unpin for SelectionError<'tcx>

impl<'tcx> !UnwindSafe for SelectionError<'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<'tcx, T> Subst<'tcx> for T where
T: TypeFoldable<'tcx>,

pub fn subst_spanned(
    self,
    tcx: TyCtxt<'tcx>,
    substs: &[GenericArg<'tcx>],
    span: Option<Span>
) -> T

fn subst(self, tcx: TyCtxt<'tcx>, substs: &[GenericArg<'tcx>]) -> Self

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

Enum rustc_trait_selection::traits::SelectionError

Variants

Unimplemented

OutputTypeParameterMismatch(Binder<'tcx, TraitRef<'tcx>>, Binder<'tcx, TraitRef<'tcx>>, TypeError<'tcx>)

TraitNotObjectSafe(DefId)

NotConstEvaluatable(NotConstEvaluatable)

Overflow

ErrorReporting

Ambiguous(Vec<DefId, Global>)

Auto Trait Implementations

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

impl<'tcx> Send for SelectionError<'tcx>

impl<'tcx> Sync for SelectionError<'tcx>

impl<'tcx> Unpin for SelectionError<'tcx>

impl<'tcx> !UnwindSafe for SelectionError<'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<'tcx, T> Subst<'tcx> for T where T: TypeFoldable<'tcx>,

pub fn subst_spanned( self, tcx: TyCtxt<'tcx>, substs: &[GenericArg<'tcx>], span: Option<Span>) -> T

fn subst(self, tcx: TyCtxt<'tcx>, substs: &[GenericArg<'tcx>]) -> Self

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

`Unimplemented`

`OutputTypeParameterMismatch(Binder<'tcx, TraitRef<'tcx>>, Binder<'tcx, TraitRef<'tcx>>, TypeError<'tcx>)`

`TraitNotObjectSafe(DefId)`

`NotConstEvaluatable(NotConstEvaluatable)`

`Overflow`

`ErrorReporting`

`Ambiguous(Vec<DefId, Global>)`

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<'tcx, T> Subst<'tcx> for T where
T: TypeFoldable<'tcx>,

pub fn subst_spanned(
self,
tcx: TyCtxt<'tcx>,
substs: &[GenericArg<'tcx>],
span: Option<Span>
) -> 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>,