/// <inheritdoc />
public bool ContainsEdge(TEdge edge)
{
if (edge == null)
{
throw new ArgumentNullException(nameof(edge));
}
return(_vertexEdges.TryGetValue(edge.Source, out IEdgeList <TVertex, TEdge> edges) &&
edges.Contains(edge));
}
public bool TryGetOutEdges(TVertex v, out IEnumerable <TEdge> edges)
{
IEdgeList <TVertex, TEdge> list;
if (vertexOutEdges.TryGetValue(v, out list))
{
edges = list;
return(true);
}
edges = null;
return(false);
}
/// <inheritdoc />
public IEnumerable <TEdge> OutEdges(TVertex vertex)
{
if (_vertexOutEdges.TryGetValue(vertex, out IEdgeList <TVertex, TEdge> outEdges))
{
return(outEdges.AsEnumerable());
}
throw new VertexNotFoundException();
}
/// <inheritdoc />
public bool TryGetOutEdges(TVertex vertex, out IEnumerable <TEdge> edges)
{
if (vertex == null)
{
throw new ArgumentNullException(nameof(vertex));
}
if (_vertexOutEdges.TryGetValue(vertex, out IEdgeList <TVertex, TEdge> outEdges))
{
edges = outEdges;
return(outEdges.Count > 0);
}
edges = null;
return(false);
}
/// <inheritdoc />
public bool ContainsEdge(TEdge edge)
{
if (edge == null)
{
throw new ArgumentNullException(nameof(edge));
}
if (!_adjacentEdges.TryGetValue(edge.Source, out IEdgeList <TVertex, TEdge> adjacentEdges))
{
return(false);
}
foreach (TEdge adjacentEdge in adjacentEdges)
{
if (EqualityComparer <TEdge> .Default.Equals(adjacentEdge, edge))
{
return(true);
}
}
return(false);
}
/// <inheritdoc />
public IEnumerable<TEdge> InEdges(TVertex vertex)
{
if (_vertexInEdges.TryGetValue(vertex, out IEdgeList<TVertex, TEdge> inEdges))
return inEdges.AsEnumerable();
throw new VertexNotFoundException();
}
/// <inheritdoc />
public bool ContainsEdge(TEdge edge)
{
if (edge == null)
{
throw new ArgumentNullException(nameof(edge));
}
return(_adjacentEdges.TryGetValue(edge.Source, out IEdgeList <TVertex, TEdge> adjacentEdges) &&
adjacentEdges.Any(adjacentEdge => EqualityComparer <TEdge> .Default.Equals(adjacentEdge, edge)));
}
