private static IEnumerable<Issue> GetAllRelatedIssuesUpwards(Issue issue, IReadOnlyList<Issue> all)
{
var result = new List<Issue>();
foreach (var id in issue.LinksTo)
{
var parent = all.Single(x => x.Id == id);
result.Add(parent);
foreach (var ancestor in GetAllRelatedIssuesUpwards(parent, all))
{
result.Add(ancestor);
}
}
return result;
}
private static IEnumerable<Issue> GetAllRelatedIssues(Issue issue, IReadOnlyList<Issue> all)
{
return GetAllRelatedIssuesUpwards(issue, all)
.Union(GetAllRelatedIssuesDownwards(issue, all))
.Union(new[] { issue });
}
private static IEnumerable<Issue> GetAllRelatedIssuesDownwards(Issue issue, IReadOnlyList<Issue> all)
{
var children = all.Where(x => x.LinksTo.Contains(issue.Id));
foreach (var child in children)
{
yield return child;
foreach (var descendant in GetAllRelatedIssuesDownwards(child, all))
{
yield return descendant;
}
}
}