private static void SetupForProcessing(Activity activity, bool canBeExecuted, ref ChildActivity nextActivity, ref Stack <ChildActivity> activitiesRemaining)
{
if (!nextActivity.Equals(ChildActivity.Empty))
{
if (activitiesRemaining == null)
{
activitiesRemaining = new Stack <ChildActivity>();
}
activitiesRemaining.Push(nextActivity);
}
nextActivity = new ChildActivity(activity, canBeExecuted);
}
private static void ProcessActivityTreeCore(ChildActivity currentActivity, ActivityCallStack parentChain, ProcessActivityTreeOptions options, ProcessActivityCallback callback, ref IList <ValidationError> validationErrors)
{
ChildActivity empty = ChildActivity.Empty;
Stack <ChildActivity> activitiesRemaining = null;
if (parentChain == null)
{
parentChain = new ActivityCallStack();
}
if (options.OnlyVisitSingleLevel)
{
ProcessActivity(currentActivity, ref empty, ref activitiesRemaining, parentChain, ref validationErrors, options, callback);
}
else
{
while (!currentActivity.Equals(ChildActivity.Empty))
{
if (object.ReferenceEquals(currentActivity.Activity, popActivity))
{
parentChain.Pop().Activity.SetCached();
}
else
{
SetupForProcessing(popActivity, true, ref empty, ref activitiesRemaining);
ProcessActivity(currentActivity, ref empty, ref activitiesRemaining, parentChain, ref validationErrors, options, callback);
parentChain.Push(currentActivity);
}
currentActivity = empty;
if ((activitiesRemaining != null) && (activitiesRemaining.Count > 0))
{
empty = activitiesRemaining.Pop();
}
else
{
empty = ChildActivity.Empty;
}
}
}
}
