private async Task <Errorable <Commit[]> > getCommitsRecursively(CommitID id, int depthLevel, int depthMaximum)
{
// Get the current commit:
var eroot = await getCommit(id).ConfigureAwait(continueOnCapturedContext: false);
if (eroot.HasErrors)
{
return(eroot.Errors);
}
var root = eroot.Value;
var rootArr = new Commit[1] {
root
};
// We have no parents:
if (root.Parents.Length == 0)
{
return(rootArr);
}
// This is the last depth level:
if (depthLevel >= depthMaximum)
{
return(rootArr);
}
// Recurse up the commit parents:
Task <Errorable <Commit[]> >[] tasks = new Task <Errorable <Commit[]> > [root.Parents.Length];
for (int i = 0; i < root.Parents.Length; ++i)
{
tasks[i] = getCommitsRecursively(root.Parents[i], depthLevel + 1, depthMaximum);
}
// Await all the tree retrievals:
var allCommits = await Task.WhenAll(tasks).ConfigureAwait(continueOnCapturedContext: false);
// Roll up all the errors:
ErrorContainer errors =
(
from ecms in allCommits
where ecms.HasErrors
select ecms.Errors
).Aggregate(new ErrorContainer(), (acc, err) => acc + err);
if (errors.HasAny)
{
return(errors);
}
// Flatten out the tree arrays:
var flattened =
from ecms in allCommits
from cm in ecms.Value
select cm;
// Return the final array:
return(rootArr.Concat(flattened).ToArray(allCommits.Sum(ca => ca.Value.Length) + 1));
}