Struct chalk_ir::Variances

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pub struct Variances<I: Interner> {
    pub(crate) interned: I::InternedVariances,
}
Expand description

List of interned elements.

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§interned: I::InternedVariances

Implementations§

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impl<I: Interner> Variances<I>

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pub fn interned(&self) -> &I::InternedVariances

Get the interned elements.

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pub fn as_slice(&self, interner: I) -> &[Variance]

Returns a slice containing the elements.

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pub fn at(&self, interner: I, index: usize) -> &Variance

Index into the sequence.

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pub fn empty(interner: I) -> Self

Create an empty sequence.

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pub fn is_empty(&self, interner: I) -> bool

Check whether this is an empty sequence.

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pub fn iter(&self, interner: I) -> Iter<'_, Variance>

Get an iterator over the elements of the sequence.

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pub fn len(&self, interner: I) -> usize

Get the length of the sequence.

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impl<I: Interner> Variances<I>

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pub fn from_fallible<E>( interner: I, variances: impl IntoIterator<Item = Result<Variance, E>> ) -> Result<Self, E>

Tries to create a list of canonical variable kinds using an iterator.

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pub fn from_iter( interner: I, variances: impl IntoIterator<Item = Variance> ) -> Self

Creates a list of canonical variable kinds using an iterator.

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pub fn from1(interner: I, variance: Variance) -> Self

Creates a list of canonical variable kinds from a single canonical variable kind.

Trait Implementations§

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impl<I: Clone + Interner> Clone for Variances<I>where I::InternedVariances: Clone,

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

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type Interner = I

The interner associated with the type.
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impl<I: Hash + Interner> Hash for Variances<I>where I::InternedVariances: Hash,

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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: Ord + Interner> Ord for Variances<I>where I::InternedVariances: Ord,

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fn cmp(&self, other: &Variances<I>) -> Ordering

This method returns an Ordering between self and other. Read more
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fn max(self, other: Self) -> Selfwhere Self: Sized,

Compares and returns the maximum of two values. Read more
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fn min(self, other: Self) -> Selfwhere Self: Sized,

Compares and returns the minimum of two values. Read more
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fn clamp(self, min: Self, max: Self) -> Selfwhere Self: Sized + PartialOrd,

Restrict a value to a certain interval. Read more
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impl<I: PartialEq + Interner> PartialEq for Variances<I>where I::InternedVariances: PartialEq,

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fn eq(&self, other: &Variances<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: PartialOrd + Interner> PartialOrd for Variances<I>where I::InternedVariances: PartialOrd,

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fn partial_cmp(&self, other: &Variances<I>) -> Option<Ordering>

This method returns an ordering between self and other values if one exists. Read more
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fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator. Read more
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fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator. Read more
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fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator. Read more
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fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator. Read more
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impl<I: Copy + Interner> Copy for Variances<I>where I::InternedVariances: Copy,

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impl<I: Eq + Interner> Eq for Variances<I>where I::InternedVariances: Eq,

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

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

Auto Trait Implementations§

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impl<I> RefUnwindSafe for Variances<I>where <I as Interner>::InternedVariances: RefUnwindSafe,

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impl<I> Send for Variances<I>where <I as Interner>::InternedVariances: Send,

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impl<I> Sync for Variances<I>where <I as Interner>::InternedVariances: Sync,

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impl<I> Unpin for Variances<I>where <I as Interner>::InternedVariances: Unpin,

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impl<I> UnwindSafe for Variances<I>where <I as Interner>::InternedVariances: UnwindSafe,

Blanket Implementations§

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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> 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.