Enum FeatureRef 

pub enum FeatureRef {
    Feature {
        name: String,
    },
    Dependency {
        name: String,
    },
    DependencyFeature {
        dependency: String,
        feature: String,
        weak: bool,
    },
    Unknown {
        raw: String,
    },
}

A typed reference inside a feature definition.

Variants

Feature

Reference to another local Cargo feature.

Fields

name: String

Referenced feature name.

Dependency

Reference to an optional dependency using dep:name.

Fields

name: String

Dependency key.

DependencyFeature

Reference to a dependency feature such as tokio/rt.

Fields

dependency: String

Dependency key.

feature: String

Dependency feature name.

weak: bool

Whether the reference uses Cargo’s weak name?/feature syntax.

Unknown

Reference syntax that could not be classified.

Fields

raw: String

Original reference text.

Implementations

impl FeatureRef

pub fn parse(raw: &str) -> Self

Parses a raw Cargo feature entry into a typed reference.

pub fn local_feature_name(&self) -> Option<&str>

Returns the local feature name when this is a local feature reference.

pub fn dependency_name(&self) -> Option<&str>

Returns the dependency key for dependency-based references.

pub fn raw(&self) -> String

Returns the reference in Cargo feature syntax.

Trait Implementations

impl Clone for FeatureRef

fn clone(&self) -> FeatureRef

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for FeatureRef

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

Formats the value using the given formatter.

impl Display for FeatureRef

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

Formats the value using the given formatter.

impl Ord for FeatureRef

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

fn eq(&self, other: &FeatureRef) -> 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 FeatureRef

fn partial_cmp(&self, other: &FeatureRef) -> 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 Serialize for FeatureRef

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Eq for FeatureRef

impl StructuralPartialEq for FeatureRef