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use super::{Directed, GraphSize, IndexGraph, Undirected};
pub trait GraphSizeRef<'a>: GraphSize<'a> {
fn nodes(&self) -> Self::NodeIter;
fn edges(&self) -> Self::EdgeIter;
}
pub trait UndirectedRef<'a>: Undirected<'a> + GraphSizeRef<'a> {
fn enodes(&self, e: Self::Edge) -> (Self::Node, Self::Node);
fn first_neigh(&self, u: Self::Node) -> Option<Self::Neigh>;
fn next_neigh(&self, it: Self::Neigh) -> Option<Self::Neigh>;
fn get_neigh(&self, it: &Self::Neigh) -> (Self::Edge, Self::Node);
}
pub trait DirectedRef<'a>: Directed<'a> + UndirectedRef<'a> {
fn src(&self, e: Self::Edge) -> Self::Node;
fn snk(&self, e: Self::Edge) -> Self::Node;
fn first_out(&self, u: Self::Node) -> Option<Self::OutEdge>;
fn next_out(&self, it: Self::OutEdge) -> Option<Self::OutEdge>;
fn get_out(&self, it: &Self::OutEdge) -> (Self::Edge, Self::Node);
fn first_in(&self, u: Self::Node) -> Option<Self::InEdge>;
fn next_in(&self, it: Self::InEdge) -> Option<Self::InEdge>;
fn get_in(&self, it: &Self::InEdge) -> (Self::Edge, Self::Node);
fn first_incident(&self, u: Self::Node) -> Option<Self::IncidentEdge>;
fn next_incident(&self, it: Self::IncidentEdge) -> Option<Self::IncidentEdge>;
fn get_incident(&self, it: &Self::IncidentEdge) -> (Self::DirectedEdge, Self::Node);
}
pub trait IndexGraphRef<'a>: IndexGraph<'a> + UndirectedRef<'a> {
fn id2node(&self, id: usize) -> Self::Node;
fn id2edge(&self, id: usize) -> Self::Edge;
}