/// <inheritdoc />
public override bool AddEdge(ReplaceableVertexFactoryInterface <TEdgeData> vertexFactory,
int destVertexIndex,
TEdgeData edgeData,
out ReplaceableVertexAdjacency <TEdgeData> final)
{
final = vertexFactory.GetInstance(EnumerableExtensions.Enumerate(AdjacentEdge.Create(destVertexIndex, edgeData)), 1);
return(true);
}
/// <inheritdoc />
public override bool RemoveEdge(ReplaceableVertexFactoryInterface <TEdgeData> vertexFactory,
int destVertexIndex,
out ReplaceableVertexAdjacency <TEdgeData> final)
{
if (!ContainsEdgeToIndex(destVertexIndex))
{
final = default;
return(false);
}
final = vertexFactory.GetInstance(
this.Where(a => a.Destination != destVertexIndex), EdgesCount - 1);
return(true);
}
/// <inheritdoc />
public override bool AddEdge(ReplaceableVertexFactoryInterface <TEdgeData> vertexFactory,
int destVertexIndex,
TEdgeData edgeData,
out ReplaceableVertexAdjacency <TEdgeData> final)
{
if (ContainsEdgeToIndex(destVertexIndex))
{
final = this;
return(false);
}
final = vertexFactory.GetInstance(
this.Append(AdjacentEdge.Create(destVertexIndex, edgeData)), EdgesCount + 1);
return(true);
}
/// <inheritdoc />
public override bool RemoveEdge(ReplaceableVertexFactoryInterface <TEdgeData> vertexFactory, int destVertexIndex, out ReplaceableVertexAdjacency <TEdgeData> final)
{
if (_adj == null || !_adj.Remove(destVertexIndex))
{
final = this;
return(false);
}
if (!vertexFactory.ProvidesFixedCapacity(_adj.Count))
{
final = this;
return(true);
}
final = vertexFactory.GetInstance(_adj.Select(AdjacentEdge.Create), _adj.Count);
return(true);
}
