Trait rustc_middle::ty::DefIdTree
source · pub trait DefIdTree: Copy {
// Required method
fn opt_parent(self, id: DefId) -> Option<DefId>;
// Provided methods
fn parent(self, id: DefId) -> DefId { ... }
fn opt_local_parent(self, id: LocalDefId) -> Option<LocalDefId> { ... }
fn local_parent(self, id: LocalDefId) -> LocalDefId { ... }
fn is_descendant_of(self, descendant: DefId, ancestor: DefId) -> bool { ... }
}