static private IVertexBase GetNextVertex(IEdgeBase edge, GraphDirection direction)
{
switch (direction)
{
case GraphDirection.Successors: return(edge.End);
case GraphDirection.Predecessors: return(edge.Start);
default: throw new NotSupportedException();
}
}
public IEnumerable <Projection <TValue> > Visit(IEdgeBase edge, Arguments args, GraphDirection direction)
{
args = new Arguments(args);
args.Value = Transform(edge, args.Value, direction);
IVertexBase nextVertex = GetNextVertex(edge, direction);
foreach (Projection <TValue> projection in nextVertex.Accept(this, args))
{
yield return(projection);
}
}
