Struct Lattice 

pub struct Lattice { /* private fields */ }

Process-wide lattice. Single instance via Lattice::get.

Implementations

impl Lattice

pub fn get() -> &'static Lattice

Get the process-wide lattice. Builds on first access.

pub fn is_subtype( &self, child: &'static TypeNode, parent: &'static TypeNode, ) -> bool

true iff child is parent or a (transitive) descendant of parent in the lattice. Walks the parent chain on the first call for a given pair; subsequent calls hit the cache.

pub fn lookup(&self, id: &str) -> Option<&'static TypeNode>

Resolve a registered TypeNode by its id string. None when no inventory submission named that id.

pub fn nodes(&self) -> impl Iterator<Item = &'static TypeNode>

Iterate every registered TypeNode. Useful for diagnostics and cargo doc-style introspection of the type tree.