Enum TargetFeatures

#[non_exhaustive]
pub enum TargetFeatures {
    Unknown,
    Features(BTreeSet<Cow<'static, str>>),
    All,
}

A set of target features to match.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Unknown

The target features are unknown.

Features(BTreeSet<Cow<'static, str>>)

Only match the specified features.

All

Match all features.

Implementations

impl TargetFeatures

pub fn features( features: impl IntoIterator<Item = impl Into<Cow<'static, str>>>, ) -> Self

Creates a new TargetFeatures which matches some features.

pub fn none() -> Self

Creates a new TargetFeatures which doesn’t match any features.

pub fn matches(&self, feature: &str) -> Option<bool>

Returns Some(true) if this feature is a match, Some(false) if it isn’t, and None if the set of target features is unknown.

Trait Implementations

impl Clone for TargetFeatures

fn clone(&self) -> TargetFeatures

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for TargetFeatures

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

Formats the value using the given formatter.

impl Hash for TargetFeatures

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 Ord for TargetFeatures

fn cmp(&self, other: &TargetFeatures) -> 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,

Restrict a value to a certain interval.

impl PartialEq for TargetFeatures

fn eq(&self, other: &TargetFeatures) -> bool

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for TargetFeatures

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

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

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

Tests less than (for self and other) and is used by the < operator.

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

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

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

Tests greater than (for self and other) and is used by the > operator.

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

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

impl Eq for TargetFeatures

impl StructuralPartialEq for TargetFeatures