Struct PackageQuery 

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

A query over a package graph.

This is the entry point for iterators over IDs and dependency links, and dot graph presentation. A PackageQuery is constructed through the query_ methods on PackageGraph.

Implementations

impl<'g> PackageQuery<'g>

pub fn graph(&self) -> &'g PackageGraph

Returns the package graph on which the query is going to be executed.

pub fn direction(&self) -> DependencyDirection

Returns the direction the query is happening in.

pub fn initials(&self) -> &PackageSet<'g>

Returns the set of initial packages specified in the query.

pub fn to_feature_query( &self, filter: impl FeatureFilter<'g>, ) -> FeatureQuery<'g>

Converts this PackageQuery into a FeatureQuery, using the given feature filter.

This will cause the feature graph to be constructed if it hasn’t been done so already.

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

Resolves this query into a set of known packages, following every link found along the way.

This is the entry point for iterators.

pub fn resolve_with( self, visitor: impl PackageLinkVisitor<'g>, ) -> PackageSet<'g>

Resolves this query into a set of known packages, using the provided visitor to determine which links are followed.

pub fn resolve_with_fn( self, visitor_fn: impl FnMut(&PackageLinkContext<'g>, PackageLink<'g>) -> bool, ) -> PackageSet<'g>

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

Trait Implementations

impl<'g> Clone for PackageQuery<'g>

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

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'g> Debug for PackageQuery<'g>

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

Formats the value using the given formatter.