rustc_trait_selection::infer

Enum TyOrConstInferVar

Source 
pub enum TyOrConstInferVar {
    Ty(TyVid),
    TyInt(IntVid),
    TyFloat(FloatVid),
    Const(ConstVid),
}
Expand description

Helper for InferCtxt::ty_or_const_infer_var_changed (see comment on that), currently used only for traits::fulfill’s list of stalled_on inference variables.

Variants§

§

Ty(TyVid)

Equivalent to ty::Infer(ty::TyVar(_)).

§

TyInt(IntVid)

Equivalent to ty::Infer(ty::IntVar(_)).

§

TyFloat(FloatVid)

Equivalent to ty::Infer(ty::FloatVar(_)).

§

Const(ConstVid)

Equivalent to ty::ConstKind::Infer(ty::InferConst::Var(_)).

Implementations§

Source§

impl<'tcx> TyOrConstInferVar

Source

pub fn maybe_from_generic_arg( arg: GenericArg<'tcx>, ) -> Option<TyOrConstInferVar>

Tries to extract an inference variable from a type or a constant, returns None for types other than ty::Infer(_) (or InferTy::Fresh*) and for constants other than ty::ConstKind::Infer(_) (or InferConst::Fresh).

Trait Implementations§

Source§

impl Clone for TyOrConstInferVar

Source§

fn clone(&self) -> TyOrConstInferVar

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 Debug for TyOrConstInferVar

Source§

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

Formats the value using the given formatter. Read more
Source§

impl Copy for TyOrConstInferVar

Auto Trait Implementations§

Blanket Implementations§

Source§

impl<T> Aligned for T

Source§

const ALIGN: Alignment = _

Alignment of Self.
Source§

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

Source§

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
§

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

§

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

§

fn allocate_from_iter( arena: &'tcx Arena<'tcx>, iter: impl IntoIterator<Item = T>, ) -> &'tcx mut [T]

Source§

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

Source§

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

Source§

fn allocate_from_iter( arena: &'tcx Arena<'tcx>, iter: impl IntoIterator<Item = T>, ) -> &'tcx mut [T]

Source§

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

Source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
Source§

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

Source§

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

Mutably borrows from an owned value. Read more
Source§

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

Source§

unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. Read more
§

impl<T, R> CollectAndApply<T, R> for T

§

fn collect_and_apply<I, F>(iter: I, f: F) -> R
where I: Iterator<Item = T>, F: FnOnce(&[T]) -> R,

Equivalent to f(&iter.collect::<Vec<_>>()).

§

type Output = R

Source§

impl<T> Filterable for T

Source§

fn filterable( self, filter_name: &'static str, ) -> RequestFilterDataProvider<T, fn(_: DataRequest<'_>) -> bool>

Creates a filterable data provider with the given name for debugging. Read more
Source§

impl<T> From<T> for T

Source§

fn from(t: T) -> T

Returns the argument unchanged.

Source§

impl<T> Instrument for T

Source§

fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
Source§

fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
Source§

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

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.

Source§

impl<T> IntoEither for T

Source§

fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
Source§

fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
Source§

impl<P> IntoQueryParam<P> for P

Source§

fn into_query_param(self) -> P

Source§

impl<T> MaybeResult<T> for T

Source§

type Error = !

Source§

fn from(_: Result<T, <T as MaybeResult<T>>::Error>) -> T

Source§

fn to_result(self) -> Result<T, <T as MaybeResult<T>>::Error>

Source§

impl<T> Pointable for T

Source§

const ALIGN: usize = _

The alignment of pointer.
Source§

type Init = T

The type for initializers.
Source§

unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
Source§

unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
Source§

unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
Source§

unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
Source§

impl<T> Same for T

Source§

type Output = T

Should always be Self
Source§

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

Source§

type Owned = T

The resulting type after obtaining ownership.
Source§

fn to_owned(&self) -> T

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

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

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

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

Source§

type Error = Infallible

The type returned in the event of a conversion error.
Source§

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

Performs the conversion.
Source§

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

Source§

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

The type returned in the event of a conversion error.
Source§

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

Performs the conversion.
§

impl<I, T, U> Upcast<I, U> for T
where U: UpcastFrom<I, T>,

§

fn upcast(self, interner: I) -> U

§

impl<I, T> UpcastFrom<I, T> for T

§

fn upcast_from(from: T, _tcx: I) -> T

Source§

impl<V, T> VZip<V> for T
where V: MultiLane<T>,

Source§

fn vzip(self) -> V

§

impl<Tcx, T> Value<Tcx> for T
where Tcx: DepContext,

§

default fn from_cycle_error( tcx: Tcx, cycle_error: &CycleError, _guar: ErrorGuaranteed, ) -> T

Source§

impl<T> WithSubscriber for T

Source§

fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
Source§

fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more
Source§

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

Source§

impl<T> ErasedDestructor for T
where T: 'static,

Source§

impl<T> MaybeSendSync for T
where T: Send + Sync,

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: 8 bytes

Size for each variant:

  • Ty: 4 bytes
  • TyInt: 4 bytes
  • TyFloat: 4 bytes
  • Const: 4 bytes