int ICompoundGraph <TVertex, TEdge> .GetChildrenCount(TVertex vertex)
{
ICompoundGraph <TVertex, TEdge> ithis = this;
Contract.Requires(ithis.ContainsVertex(vertex));
Contract.Ensures(Contract.Result <int>() >= 0);
return(default(int));
}
IEnumerable <TVertex> ICompoundGraph <TVertex, TEdge> .GetChildrenVertices(TVertex vertex)
{
ICompoundGraph <TVertex, TEdge> ithis = this;
Contract.Requires(!vertex.Equals(default(TVertex)));
Contract.Requires(ithis.ContainsVertex(vertex));
return(new List <TVertex>());
}
bool ICompoundGraph <TVertex, TEdge> .IsChildVertex(TVertex vertex)
{
ICompoundGraph <TVertex, TEdge> ithis = this;
Contract.Requires(!vertex.Equals(default(TVertex)));
Contract.Requires(ithis.ContainsVertex(vertex));
return(default(bool));
}
bool ICompoundGraph <TVertex, TEdge> .AddChildVertex(TVertex parent, TVertex child)
{
ICompoundGraph <TVertex, TEdge> ithis = this;
Contract.Requires(!parent.Equals(default(TVertex)));
Contract.Requires(ithis.ContainsVertex(parent));
return(default(bool));
}
int ICompoundGraph <TVertex, TEdge> .AddChildVertexRange(TVertex parent, IEnumerable <TVertex> children)
{
ICompoundGraph <TVertex, TEdge> ithis = this;
Contract.Requires(!parent.Equals(default(TVertex)));
Contract.Requires(ithis.ContainsVertex(parent));
Contract.Ensures(Contract.Result <int>() >= 0);
return(default(int));
}
TVertex ICompoundGraph <TVertex, TEdge> .GetParent(TVertex vertex)
{
ICompoundGraph <TVertex, TEdge> ithis = this;
Contract.Requires(!vertex.Equals(default(TVertex)));
Contract.Requires(ithis.ContainsVertex(vertex));
//TODO this is a bug in the MS Contract, i think -- solve it
//Contract.Ensures( Contract.Result<TVertex>().Equals( default( TVertex ) ) || ithis.ContainsVertex( Contract.Result<TVertex>() ) );
return(default(TVertex));
}