/// <summary>
/// Resolve task safe
/// </summary>
private void InitNextTask()
{
//try get next task
try
{
IPandaTask continuationPandaTask = _nextActionDelegate();
//no task resolved
if (continuationPandaTask != null)
{
_state = ContinuationTaskState.WaitSecondComplete;
continuationPandaTask.Done(HandleTaskCompleted).Fail(HandleTaskFailed);
}
else
{
RejectInternal(new NullReferenceException(@"Continuation callback returns null task!"));
}
}
catch (Exception ex)
{
if (Status != PandaTaskStatus.Pending)
{
throw;
}
//reject on non system exceptions
RejectInternal(ex);
}
}
/// <summary>
/// Reject Task with state change
/// </summary>
/// <param name="exception">reject exception</param>
private void RejectInternal(Exception exception)
{
_state = ContinuationTaskState.Completed;
Reject(exception);
}
public override void Dispose()
{
//to prevent supported state after dispose
_state = ContinuationTaskState.Completed;
base.Dispose();
}
/// <summary>
/// Set task resolved
/// </summary>
private void ResolveInternal()
{
//if continuation task completed
_state = ContinuationTaskState.Completed;
base.Resolve();
}
