Struct ProjectGraph 

pub struct ProjectGraph { /* private fields */ }

A workspace’s project-level dependency shape.

Implementations

impl ProjectGraph

pub fn parents_of(&self, name: &str) -> &BTreeSet<String>

The hosted projects name depends on, in name order. Empty for a root or an isolated project.

pub fn inbound_edges_of(&self, name: &str) -> usize

How many external-ref edges point into name.

Exposed because it is what Self::busiest_hub reduces, and because it is the number Self::children_of is most likely to be confused with: this counts edges and includes self-references, that counts distinct dependent projects and excludes them. A spoke referencing the hub from twenty config keys contributes twenty here and one there.

pub fn children_of(&self, name: &str) -> usize

How many hosted projects depend on name.

A lookup rather than a scan: it is called once per project, and scanning every parents set each time made role assignment O(n²) in the number of projects for an answer already known while the map was built.

pub fn role_of(&self, name: &str) -> ProjectRole

Where name sits in the hierarchy, from its own in/out degree.

pub fn has_any_external_refs(&self) -> bool

Whether any project carries a persisted external-ref edge at all.

pub fn busiest_hub(&self) -> Option<String>

The hosted project most external-ref edges point into, or None when nothing references a hosted project (a single-repo or unlinked workspace).

Note what this is not: in a snowflake it names the busiest node, which need not be the chain’s root. infra1/infra2 → chart → app makes chart the hub on two inbound edges while app is what everything ultimately depends on. That is the right answer for this function’s one job — picking the config-key baseline the override matrix pivots on — and the wrong answer for “where does the chain end”, which is what Self::role_of reports instead. In a star the two coincided, which is why one field used to serve both.

Trait Implementations

impl Clone for ProjectGraph

fn clone(&self) -> ProjectGraph

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ProjectGraph

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

Formats the value using the given formatter.

impl Default for ProjectGraph

fn default() -> ProjectGraph

Returns the “default value” for a type.