/// <summary>
/// The expression used to determine if a machine should should continue.
/// Only continue if the machine is running and is not finished.
/// </summary>
protected static bool CheckMachineCanNotFinish(ActivityMachine machine)
{
if (machine == null)
{
return(false);
}
lock (machine._executionLock)
{
return(machine.CompletionCause == CompletionCause.Pending);
}
}
/// <summary>
/// The method used to determine if a machine should transition to final node.
/// It indicates quitting if the machine's CompletionCause is other than 'Pending',
/// or if it does not have a continue transition (meaning it is the last node);
/// </summary>
/// <param name="machine">the machine to check</param>
/// <returns>True if the machine is finished or if the current node only has a quit transition.</returns>
protected static bool CheckMachineCanFinish(ActivityMachine machine)
{
if (machine == null)
{
return(false);
}
lock (machine._executionLock)
{
if (machine.CompletionCause != CompletionCause.Pending)
{
return(true);
}
var continueTransition = FindContinueTransition(machine.CurrentNode);
// If somehow there is no continue transition, then the only way to finish is this nodes finish transition.
return(continueTransition == null);
}
}