private BranchVertex AddBranch(GitGraph graph, Branch branch)
{
BranchVertex bv;
BranchEdge be;
CommitVertex cv;
if (graph.TryGetBranchVertex(branch.Name, out bv))
{
if (bv.Branch.Tip.Sha == branch.Tip.Sha)
return bv;
// Found the branch but it's pointing to another commit. Let's remove it
// and re-add it
if (graph.TryGetCommitVertex(bv.Branch.Tip.Sha, out cv))
{
GitEdge e;
if (this.graph.TryGetEdge(bv, cv, out e))
this.graph.RemoveEdge(e);
}
this.graph.RemoveVertex(bv);
}
cv = AddCommit(graph, branch.Tip);
if (cv == null)
return null;
if (bv == null)
bv = new BranchVertex(branch);
be = new BranchEdge(bv, cv);
graph.AddVertex(bv);
graph.AddEdge(be);
return bv;
}
