private void Visit(GrafVertex vertex)
{
if (vertex.VertexType != VertexType.White)
{
throw new Exception("Wrong algorithm work!");
}
vertex.VertexType = VertexType.Gray;
foreach (var nextVertex in vertex.NextVertexes)
{
if (nextVertex.VertexType == VertexType.Gray)
{
ThrowCycleError(nextVertex.Description.Type);
}
else if (nextVertex.VertexType == VertexType.Black)
{
continue;
}
else
{
Visit(nextVertex);
}
}
vertex.VertexType = VertexType.Black;
WhiteSet.Remove(vertex);
Result.Push(vertex);
}
public MiddlewareDescription[] CalcResult()
{
while (WhiteSet.Count > 0)
{
var vertex = WhiteSet.First();
Visit(vertex);
}
return(Result.Select(v => v.Description).Reverse().ToArray());
}
public Graf(IEnumerable <MiddlewareDescription> descriptions)
{
foreach (var item in descriptions)
{
GrafVertex vertex = new GrafVertex {
Description = item, VertexType = VertexType.White
};
WhiteSet.Add(vertex);
}
CreateGraf();
}
private void CreateGraf()
{
foreach (var vertex in WhiteSet)
{
vertex.NextVertexes.AddRange(WhiteSet.Where(v => vertex.Description.MustBeAfter.Contains(v.Description.Type)));
foreach (var typeBefore in vertex.Description.MustBeBefore)
{
var vertexBefore = WhiteSet.FirstOrDefault(v => v.Description.Type == typeBefore);
vertexBefore?.NextVertexes.Add(vertex);
}
}
}