Struct guppy::graph::EnabledStatus

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pub struct EnabledStatus<'g> { /* private fields */ }
Expand description

Whether a dependency or feature is required, optional, or disabled.

Returned by the methods on DependencyMetadata.

§Examples

[dependencies]
once_cell = "1"

The dependency and default features are required on all platforms.

[dependencies]
once_cell = { version = "1", optional = true }

The dependency and default features are optional on all platforms.

[target.'cfg(windows)'.dependencies]
once_cell = { version = "1", optional = true }

The result is platform-dependent. On Windows, the dependency and default features are both optional. On non-Windows platforms, the dependency and default features are disabled.

[dependencies]
once_cell = { version = "1", optional = true }

[target.'cfg(windows)'.dependencies]
once_cell = { version = "1", optional = false, default-features = false }

The result is platform-dependent. On Windows, the dependency is mandatory and default features are optional (i.e. enabled if the once_cell feature is turned on).

On Unix platforms, the dependency and default features are both optional.

Implementations§

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impl<'g> EnabledStatus<'g>

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pub fn is_never(&self) -> bool

Returns true if this dependency is never enabled on any platform.

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pub fn required_on(&self, platform_spec: &PlatformSpec) -> EnabledTernary

Evaluates whether this dependency is required on the given platform spec.

Returns Unknown if the result was unknown, which may happen if evaluating against an individual platform and its target features are unknown.

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pub fn enabled_on(&self, platform_spec: &PlatformSpec) -> EnabledTernary

Evaluates whether this dependency is enabled (required or optional) on the given platform spec.

Returns Unknown if the result was unknown, which may happen if evaluating against an individual platform and its target features are unknown.

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pub fn required_status(&self) -> PlatformStatus<'g>

Returns the PlatformStatus corresponding to whether this dependency is required.

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pub fn optional_status(&self) -> PlatformStatus<'g>

Returns the PlatformStatus corresponding to whether this dependency is optional.

Trait Implementations§

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impl<'g> Clone for EnabledStatus<'g>

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fn clone(&self) -> EnabledStatus<'g>

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<'g> Debug for EnabledStatus<'g>

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

Formats the value using the given formatter. Read more
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impl<'g> Copy for EnabledStatus<'g>

Auto Trait Implementations§

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impl<'g> Freeze for EnabledStatus<'g>

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impl<'g> RefUnwindSafe for EnabledStatus<'g>

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impl<'g> Send for EnabledStatus<'g>

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impl<'g> Sync for EnabledStatus<'g>

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impl<'g> Unpin for EnabledStatus<'g>

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impl<'g> UnwindSafe for EnabledStatus<'g>

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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default unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. Read more
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impl<T> CloneToUninit for T
where T: Copy,

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unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.