Struct chalk_ir::Variances

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

List of interned elements.

Fields

interned: I::InternedVariances

Implementations

impl<I: Interner> Variances<I>

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

Get the interned elements.

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

Returns a slice containing the elements.

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

Index into the sequence.

pub fn empty(interner: I) -> Self

Create an empty sequence.

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

Check whether this is an empty sequence.

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

Get an iterator over the elements of the sequence.

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

Get the length of the sequence.

impl<I: Interner> Variances<I>

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.

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

Creates a list of canonical variable kinds using an iterator.

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

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

Trait Implementations

impl<I: Clone + Interner> Clone for Variances<I>

where I::InternedVariances: Clone,

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

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

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

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

Formats the value using the given formatter.

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

type Interner = I

The interner associated with the type.

impl<I: Hash + Interner> Hash for Variances<I>

where I::InternedVariances: Hash,

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

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl<I: Ord + Interner> Ord for Variances<I>

where I::InternedVariances: Ord,

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

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized + PartialOrd,

Restrict a value to a certain interval.

impl<I: PartialEq + Interner> PartialEq for Variances<I>

where I::InternedVariances: PartialEq,

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

This method tests for self and other values to be equal, and is used by ==.

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.

impl<I: PartialOrd + Interner> PartialOrd for Variances<I>

where I::InternedVariances: PartialOrd,

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

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl<I: Copy + Interner> Copy for Variances<I>

where I::InternedVariances: Copy,

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

where I::InternedVariances: Eq,

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