Enum cargo::core::summary::FeatureValue

pub enum FeatureValue {
    Feature(InternedString),
    Dep {
        dep_name: InternedString,
    },
    DepFeature {
        dep_name: InternedString,
        dep_feature: InternedString,
        dep_prefix: bool,
        weak: bool,
    },
}

FeatureValue represents the types of dependencies a feature can have.

Variants

Feature(InternedString)

A feature enabling another feature.

Dep

Fields

dep_name: InternedString

A feature enabling a dependency with dep:dep_name syntax.

DepFeature

Fields

dep_name: InternedString

dep_feature: InternedString

dep_prefix: bool

If this is true, then the feature used the dep: prefix, which prevents enabling the feature named dep_name.

weak: bool

If true, indicates the ? syntax is used, which means this will not automatically enable the dependency unless the dependency is activated through some other means.

A feature enabling a feature on a dependency with crate_name/feat_name syntax.

Implementations

impl FeatureValue

pub fn new(feature: InternedString) -> FeatureValue

pub fn has_dep_prefix(&self) -> bool

Returns true if this feature explicitly used dep: syntax.

Trait Implementations

impl Clone for FeatureValue

fn clone(&self) -> FeatureValue

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for FeatureValue

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

Formats the value using the given formatter.

impl Display for FeatureValue

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

Formats the value using the given formatter.

impl Hash for FeatureValue

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, 

Feeds a slice of this type into the given Hasher.

impl Ord for FeatureValue

fn cmp(&self, other: &FeatureValue) -> Ordering

This method returns an Ordering between self and other.

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

Compares and returns the maximum of two values.

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

Compares and returns the minimum of two values.

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

Restrict a value to a certain interval.

impl PartialEq<FeatureValue> for FeatureValue

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

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

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

This method tests for !=.

impl PartialOrd<FeatureValue> for FeatureValue

fn partial_cmp(&self, other: &FeatureValue) -> 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 Eq for FeatureValue

impl StructuralEq for FeatureValue

impl StructuralPartialEq for FeatureValue