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extern crate fixedbitset;
use std::cmp::Ordering;
use std::hash::{self, Hash};
use std::fmt;
use std::ops::{Deref};
pub use scored::MinScored;
pub use graph::Graph;
pub use graphmap::GraphMap;
pub use visit::{
Bfs,
BfsIter,
Dfs,
DfsIter,
};
pub use EdgeDirection::{Outgoing, Incoming};
mod scored;
pub mod algo;
#[doc(hidden)]
pub mod generate;
pub mod graphmap;
pub mod graph;
pub mod dot;
pub mod visit;
pub mod unionfind;
mod dijkstra;
mod isomorphism;
mod traits_graph;
#[cfg(feature = "quickcheck")]
pub mod quickcheck;
#[derive(Copy, Clone, Debug, PartialEq)]
pub enum EdgeDirection {
Outgoing = 0,
Incoming = 1
}
impl EdgeDirection {
#[inline]
fn opposite(&self) -> EdgeDirection {
match *self {
Outgoing => Incoming,
Incoming => Outgoing,
}
}
}
#[derive(Copy, Clone, Debug)]
pub struct Directed;
#[derive(Copy, Clone, Debug)]
pub struct Undirected;
pub trait EdgeType {
fn is_directed() -> bool;
}
impl EdgeType for Directed {
#[inline]
fn is_directed() -> bool { true }
}
impl EdgeType for Undirected {
#[inline]
fn is_directed() -> bool { false }
}
pub struct Ptr<'b, T: 'b>(pub &'b T);
impl<'b, T> Copy for Ptr<'b, T> {}
impl<'b, T> Clone for Ptr<'b, T>
{
fn clone(&self) -> Self { *self }
}
fn ptr_eq<T>(a: *const T, b: *const T) -> bool {
a == b
}
impl<'b, T> PartialEq for Ptr<'b, T>
{
fn eq(&self, other: &Ptr<'b, T>) -> bool {
ptr_eq(self.0, other.0)
}
}
impl<'b, T> PartialOrd for Ptr<'b, T>
{
fn partial_cmp(&self, other: &Ptr<'b, T>) -> Option<Ordering> {
Some(self.cmp(other))
}
}
impl<'b, T> Ord for Ptr<'b, T>
{
fn cmp(&self, other: &Ptr<'b, T>) -> Ordering {
let a = self.0 as *const _;
let b = other.0 as *const _;
a.cmp(&b)
}
}
impl<'b, T> Deref for Ptr<'b, T> {
type Target = T;
fn deref<'a>(&'a self) -> &'a T {
self.0
}
}
impl<'b, T> Eq for Ptr<'b, T> {}
impl<'b, T> Hash for Ptr<'b, T>
{
fn hash<H: hash::Hasher>(&self, st: &mut H)
{
let ptr = (self.0) as *const T;
ptr.hash(st)
}
}
impl<'b, T: fmt::Debug> fmt::Debug for Ptr<'b, T> {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
self.0.fmt(f)
}
}
pub trait IntoWeightedEdge<Ix, E> {
fn into_weighted_edge(self) -> (Ix, Ix, E);
}
impl<Ix, E> IntoWeightedEdge<Ix, E> for (Ix, Ix)
where E: Default
{
fn into_weighted_edge(self) -> (Ix, Ix, E) {
let (s, t) = self;
(s, t, E::default())
}
}
impl<Ix, E> IntoWeightedEdge<Ix, E> for (Ix, Ix, E)
{
fn into_weighted_edge(self) -> (Ix, Ix, E) {
self
}
}
impl<'a, Ix, E> IntoWeightedEdge<Ix, E> for (Ix, Ix, &'a E)
where E: Clone
{
fn into_weighted_edge(self) -> (Ix, Ix, E) {
let (a, b, c) = self;
(a, b, c.clone())
}
}
impl<'a, Ix, E> IntoWeightedEdge<Ix, E> for &'a (Ix, Ix)
where Ix: Copy, E: Default
{
fn into_weighted_edge(self) -> (Ix, Ix, E) {
let (s, t) = *self;
(s, t, E::default())
}
}
impl<'a, Ix, E> IntoWeightedEdge<Ix, E> for &'a (Ix, Ix, E)
where Ix: Copy, E: Clone
{
fn into_weighted_edge(self) -> (Ix, Ix, E) {
self.clone()
}
}