pub enum VariableKind<I: Interner> {
    Ty(TyVariableKind),
    Lifetime,
    Const(Ty<I>),
}
Expand description

The “kind” of variable. Type, lifetime or constant.

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Ty(TyVariableKind)

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Lifetime

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Const(Ty<I>)

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impl<I: Interner> VariableKind<I>

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pub(crate) fn to_bound_variable( &self, interner: I, bound_var: BoundVar ) -> GenericArg<I>

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impl<I: Interner> CastTo<VariableKind<I>> for VariableKind<I>

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fn cast_to( self, _interner: <VariableKind<I> as HasInterner>::Interner ) -> VariableKind<I>

Cast a value to type T.
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impl<I: Clone + Interner> Clone for VariableKind<I>

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fn clone(&self) -> VariableKind<I>

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<I: Interner> Debug for VariableKind<I>

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

Formats the value using the given formatter. Read more
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impl<I: Interner> HasInterner for VariableKind<I>

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type Interner = I

The interner associated with the type.
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impl<I: Hash + Interner> Hash for VariableKind<I>

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fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher. Read more
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fn hash_slice<H>(data: &[Self], state: &mut H)where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl<I: PartialEq + Interner> PartialEq<VariableKind<I>> for VariableKind<I>

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fn eq(&self, other: &VariableKind<I>) -> bool

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl<I: Interner> Zip<I> for VariableKind<I>

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fn zip_with<Z: Zipper<I>>( zipper: &mut Z, variance: Variance, a: &Self, b: &Self ) -> Fallible<()>

Uses the zipper to walk through two values, ensuring that they match.
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impl<I: Interner> Copy for VariableKind<I>where I::InternedType: Copy,

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impl<I: Eq + Interner> Eq for VariableKind<I>

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impl<I: Interner> StructuralEq for VariableKind<I>

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impl<I: Interner> StructuralPartialEq for VariableKind<I>

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impl<I> RefUnwindSafe for VariableKind<I>where <I as Interner>::InternedType: RefUnwindSafe,

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impl<I> Send for VariableKind<I>where <I as Interner>::InternedType: Send,

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impl<I> Sync for VariableKind<I>where <I as Interner>::InternedType: Sync,

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impl<I> Unpin for VariableKind<I>where <I as Interner>::InternedType: Unpin,

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impl<I> UnwindSafe for VariableKind<I>where <I as Interner>::InternedType: UnwindSafe,

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impl<T> Any for Twhere 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 Twhere 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 Twhere 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<U>(self, interner: U::Interner) -> Uwhere Self: CastTo<U>, U: HasInterner,

Cast a value to type U using CastTo.
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impl<T, I> CouldMatch<T> for Twhere T: Zip<I> + HasInterner<Interner = I> + ?Sized, I: Interner,

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fn could_match( &self, interner: I, db: &dyn UnificationDatabase<I>, other: &T ) -> bool

Checks whether self and other could possibly match.
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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 Twhere 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 Twhere 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 Twhere 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 Twhere 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.