Enum FeaturesFor

pub enum FeaturesFor {
    NormalOrDev,
    HostDep,
    ArtifactDep(CompileTarget),
}

Flag to indicate if features are requested for a certain type of dependency.

This is primarily used for constructing a PackageFeaturesKey to decouple activated features of the same package with different types of dependency.

Variants

NormalOrDev

Normal or dev dependency.

HostDep

Build dependency or proc-macro.

ArtifactDep(CompileTarget)

Any dependency with both artifact and target specified.

That is, dep = { …, artifact = <crate-type>, target = <triple> }

Implementations

impl FeaturesFor

pub fn from_for_host(for_host: bool) -> FeaturesFor

pub fn from_for_host_or_artifact_target( for_host: bool, artifact_target: Option<CompileTarget>, ) -> FeaturesFor

fn apply_opts(self, opts: &FeatureOpts) -> Self

Trait Implementations

impl Clone for FeaturesFor

fn clone(&self) -> FeaturesFor

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for FeaturesFor

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

Formats the value using the given formatter.

impl Default for FeaturesFor

fn default() -> FeaturesFor

Returns the “default value” for a type.

impl Display for FeaturesFor

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

Formats the value using the given formatter.

impl Hash for FeaturesFor

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 FeaturesFor

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

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

fn partial_cmp(&self, other: &FeaturesFor) -> 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 Copy for FeaturesFor

impl Eq for FeaturesFor

impl StructuralPartialEq for FeaturesFor

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 24 bytes

Size for each variant:

• NormalOrDev: 0 bytes
• HostDep: 0 bytes
• ArtifactDep: 16 bytes