Struct guppy::graph::feature::FeatureQuery

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pub struct FeatureQuery<'g> { /* private fields */ }

Expand description

A query over a feature graph.

A FeatureQuery is the entry point for Cargo resolution, and also provides iterators over feature IDs and links. This struct is constructed through the query_ methods on FeatureGraph, or through PackageQuery::to_feature_query.

Implementations

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impl<'g> FeatureQuery<'g>

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pub fn graph(&self) -> &FeatureGraph<'g>

Returns the feature graph the query is going to be executed on.

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pub fn direction(&self) -> DependencyDirection

Returns the direction the query is happening in.

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pub fn initials<'a>(
&'a self
) -> impl Iterator<Item = FeatureMetadata<'g>> + ExactSizeIterator + 'a

Returns the list of initial features specified in the query.

The order of features is unspecified.

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pub fn initial_packages<'a>(
&'a self
) -> impl Iterator<Item = PackageMetadata<'g>> + 'a

Returns the list of initial packages specified in the query.

The order of packages is unspecified.

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pub fn starts_from_package(&self, package_id: &PackageId) -> Result<bool, Error>

Returns true if the query starts from the given package.

Returns an error if the package ID is unknown.

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pub fn starts_from<'a>(
&self,
feature_id: impl Into<FeatureId<'a>>
) -> Result<bool, Error>

Returns true if the query starts from the given feature ID.

Returns an error if this feature ID is unknown.

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pub fn resolve(self) -> FeatureSet<'g>

Resolves this query into a set of known feature IDs.

This is the entry point for iterators.

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pub fn resolve_with(self, resolver: impl FeatureResolver<'g>) -> FeatureSet<'g>

Resolves this query into a set of known feature IDs, using the provided resolver to determine which links are followed.

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pub fn resolve_with_fn(
self,
resolver_fn: impl FnMut(&FeatureQuery<'g>, ConditionalLink<'g>) -> bool
) -> FeatureSet<'g>

Resolves this query into a set of known feature IDs, using the provided resolver function to determine which links are followed.

Trait Implementations

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impl<'g> Clone for FeatureQuery<'g>

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

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

Formats the value using the given formatter. Read more

Auto Trait Implementations

impl<'g> RefUnwindSafe for FeatureQuery<'g>

impl<'g> Send for FeatureQuery<'g>

impl<'g> Sync for FeatureQuery<'g>

impl<'g> Unpin for FeatureQuery<'g>

impl<'g> UnwindSafe for FeatureQuery<'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,

const: unstable · source

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,

const: unstable · source

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

Mutably borrows from an owned value. Read more

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impl<T> From<T> for T

const: unstable · source

fn from(t: T) -> T

Returns the argument unchanged.

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

const: unstable · source

fn into(self) -> U

Calls U::from(self).

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

impl<T> Pointable for T

const ALIGN: usize

The alignment of pointer.

type Init = T

The type for initializers.

unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more

unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more

unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more

unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more

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

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)

🔬 This is a nightly-only experimental API. (toowned_clone_into)

Uses borrowed data to replace owned data, usually by cloning. Read more

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

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

fn try_from(value: U) -> Result<T, <T as TryFrom>::Error>

Performs the conversion.

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impl<T, U> TryInto for T where
U: TryFrom<T>,

type Error = >::Error

The type returned in the event of a conversion error.

const: unstable · source

fn try_into(self) -> Result<U, >::Error>

Performs the conversion.

Struct guppy::graph::feature::FeatureQuery

Implementations

impl<'g> FeatureQuery<'g>

pub fn graph(&self) -> &FeatureGraph<'g>

pub fn direction(&self) -> DependencyDirection

pub fn initials<'a>( &'a self) -> impl Iterator<Item = FeatureMetadata<'g>> + ExactSizeIterator + 'a

pub fn initial_packages<'a>( &'a self) -> impl Iterator<Item = PackageMetadata<'g>> + 'a

pub fn starts_from_package(&self, package_id: &PackageId) -> Result<bool, Error>

pub fn starts_from<'a>( &self, feature_id: impl Into<FeatureId<'a>>) -> Result<bool, Error>

pub fn resolve(self) -> FeatureSet<'g>

pub fn resolve_with(self, resolver: impl FeatureResolver<'g>) -> FeatureSet<'g>

pub fn resolve_with_fn( self, resolver_fn: impl FnMut(&FeatureQuery<'g>, ConditionalLink<'g>) -> bool) -> FeatureSet<'g>

Trait Implementations

impl<'g> Clone for FeatureQuery<'g>

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

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

impl<'g> Debug for FeatureQuery<'g>

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

Auto Trait Implementations

impl<'g> RefUnwindSafe for FeatureQuery<'g>

impl<'g> Send for FeatureQuery<'g>

impl<'g> Sync for FeatureQuery<'g>

impl<'g> Unpin for FeatureQuery<'g>

impl<'g> UnwindSafe for FeatureQuery<'g>

Blanket Implementations

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

fn type_id(&self) -> TypeId

impl<T> Borrow<T> for T where T: ?Sized,

fn borrow(&self) -> &T

impl<T> BorrowMut<T> for T where T: ?Sized,

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

impl<T> From<T> for T

fn from(t: T) -> T

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

fn into(self) -> U

impl<T> Pointable for T

const ALIGN: usize

type Init = T

unsafe fn init(init: <T as Pointable>::Init) -> usize

unsafe fn deref<'a>(ptr: usize) -> &'a T

unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

unsafe fn drop(ptr: usize)

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

type Owned = T

fn to_owned(&self) -> T

fn clone_into(&self, target: &mut T)

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

type Error = Infallible

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

impl<T, U> TryInto<U> for T where U: TryFrom<T>,

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

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

impl<V, T> VZip<V> for T where V: MultiLane<T>,

fn vzip(self) -> V

pub fn initials<'a>(
&'a self
) -> impl Iterator<Item = FeatureMetadata<'g>> + ExactSizeIterator + 'a

pub fn initial_packages<'a>(
&'a self
) -> impl Iterator<Item = PackageMetadata<'g>> + 'a

pub fn starts_from<'a>(
&self,
feature_id: impl Into<FeatureId<'a>>
) -> Result<bool, Error>

pub fn resolve_with_fn(
self,
resolver_fn: impl FnMut(&FeatureQuery<'g>, ConditionalLink<'g>) -> bool
) -> FeatureSet<'g>

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

impl<T> Borrow<T> for T where
T: ?Sized,

impl<T> BorrowMut<T> for T where
T: ?Sized,

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

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

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

impl<T, U> TryInto<U> for T where
U: TryFrom<T>,

impl<V, T> VZip<V> for T where
V: MultiLane<T>,