Enum TyOrConstInferVar

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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.

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Ty(TyVid)

Equivalent to Infer(TyVar(_)).

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TyInt(IntVid)

Equivalent to Infer(IntVar(_)).

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TyFloat(FloatVid)

Equivalent to Infer(FloatVar(_)).

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Const(ConstVid)

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

Implementations§

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impl TyOrConstInferVar

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

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

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impl Clone for TyOrConstInferVar

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fn clone(&self) -> TyOrConstInferVar

Returns a duplicate 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§

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impl UnwindSafe for TyOrConstInferVar

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> Cast for T

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fn cast(self, interner: ::Interner) -> U
where Self: CastTo, U: HasInterner,

Cast a value to type U using CastTo.

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

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

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

Performs copy-assignment from self to dest. Read more

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

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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<_>>()).

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type Output = R

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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> Instrument for T

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

Instruments this type with the provided [Span], returning an Instrumented wrapper. Read more

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fn in_current_span(self) -> Instrumented<Self>

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

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impl<T, U> Into 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> IntoBox<dyn Any> for T
where T: Any,

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fn into_box(self) -> Box<dyn Any>

Convert self into the appropriate boxed form.

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impl<T> IntoBox<dyn Any + Send> for T
where T: Any + Send,

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fn into_box(self) -> Box<dyn Any + Send>

Convert self into the appropriate boxed form.

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impl<T> IntoBox<dyn Any + Sync + Send> for T
where T: Any + Send + Sync,

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fn into_box(self) -> Box<dyn Any + Sync + Send>

Convert self into the appropriate boxed form.

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impl<T> IntoEither for T

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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

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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

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