Trait rustc_middle::ty::DefIdTree

source · 
pub trait DefIdTree: Copy {
    fn opt_parent(self, id: DefId) -> Option<DefId>;

    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 { ... }
}

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