Enum rustc_infer::infer::TyOrConstInferVar

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pub enum TyOrConstInferVar {
    Ty(TyVid),
    TyInt(IntVid),
    TyFloat(FloatVid),
    Const(ConstVid),
    Effect(EffectVid),
}
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§

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Ty(TyVid)

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

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TyInt(IntVid)

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

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TyFloat(FloatVid)

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

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Const(ConstVid)

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

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Effect(EffectVid)

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

Implementations§

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impl<'tcx> TyOrConstInferVar

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

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).

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fn maybe_from_ty(ty: Ty<'tcx>) -> Option<Self>

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

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fn maybe_from_const(ct: Const<'tcx>) -> Option<Self>

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

Trait Implementations§

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impl Clone for TyOrConstInferVar

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fn clone(&self) -> TyOrConstInferVar

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for TyOrConstInferVar

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

Formats the value using the given formatter. Read more
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impl Copy for TyOrConstInferVar

Auto Trait Implementations§

Blanket Implementations§

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

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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,

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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

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fn from(t: T) -> T

Returns the argument unchanged.

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

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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 T
where T: Clone,

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

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::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: 8 bytes

Size for each variant:

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