Struct debian_packaging::dependency_resolution::DependencyResolver

pub struct DependencyResolver<'file, 'data: 'file> { /* fields omitted */ }

An entity for resolving dependencies between packages.

Implementations

impl<'file, 'data: 'file> DependencyResolver<'file, 'data>

pub fn load_binary_packages(
    &mut self,
    files: impl Iterator<Item = &'file BinaryPackageControlFile<'data>>
) -> Result<()>

Load an iterable of binary packages into the resolver.

This effectively indexes the given binary package definitions and enables them to be discovered during subsequent dependency resolution.

pub fn find_direct_binary_package_dependencies(
    &self,
    cf: &BinaryPackageControlFile<'_>,
    dep: BinaryDependency
) -> Result<BinaryPackageDependenciesResolution<'file, 'data>>

Find direct dependencies given a binary control file and a dependency field.

This will resolve the specified BinaryDependency field to a list of constraints and then find candidate BinaryPackageControlFile satisfying all requirements within.

pub fn find_transitive_binary_package_dependencies(
    &self,
    cf: &'file BinaryPackageControlFile<'data>,
    fields: impl Iterator<Item = BinaryDependency>
) -> Result<BinaryPackageTransitiveDependenciesResolution<'file, 'data>>

Resolve binary package dependencies transitively.

Given a binary package control file and an iterable of dependency fields to follow, this function will resolve the complete dependency graph for the given package.

It works by resolving direct dependencies. Then for each direct dependency, it resolves its direct dependencies. And this cycle continues until no new packages are discovered.

Only the dependency fields specified by fields are searched. This allows callers to e.g. not include Recommends or Suggests dependencies in the returned set. Callers are strongly encouraged to include BinaryDependency::Depends and BinaryDependency::PreDepends in this iterable because the dependency graph will be logically incomplete with them.

Trait Implementations

impl<'file, 'data: 'file> Clone for DependencyResolver<'file, 'data>

fn clone(&self) -> DependencyResolver<'file, 'data>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<'file, 'data: 'file> Debug for DependencyResolver<'file, 'data>

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

Formats the value using the given formatter.

impl<'file, 'data: 'file> Default for DependencyResolver<'file, 'data>

fn default() -> DependencyResolver<'file, 'data>

Returns the “default value” for a type.