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dag_walk: remove unused TopoIter

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Martin von Zweigbergk 2021-03-18 16:29:43 -07:00
parent db4e8bc458
commit 53d1757994
1 changed files with 0 additions and 31 deletions
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31
lib/src/dag_walk.rs
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@ -92,37 +92,6 @@ where
}
}
pub struct TopoIter<'id_fn, 'neighbors_fn, T, ID, NI> {
id_fn: Box<dyn Fn(&T) -> ID + 'id_fn>,
neighbors_fn: Box<dyn FnMut(&T) -> NI + 'neighbors_fn>,
work: Vec<T>,
visited: HashSet<ID>,
}
impl<T, ID, NI> Iterator for TopoIter<'_, '_, T, ID, NI>
where
ID: Hash + Eq,
NI: IntoIterator<Item = T>,
{
type Item = T;
fn next(&mut self) -> Option<Self::Item> {
while !self.work.is_empty() {
let c = self.work.pop().unwrap();
let id = (self.id_fn)(&c);
if self.visited.contains(&id) {
continue;
}
for p in (self.neighbors_fn)(&c) {
self.work.push(p);
}
self.visited.insert(id);
return Some(c);
}
None
}
}
/// Returns neighbors before the node itself.
pub fn topo_order_reverse<'a, T, ID, II, NI>(
start: II,