public Nullable <DateTime> Step()
{
IsStarted = true;
if (Stacks.Count == 0)
{
IsCompleted = true;
return(null);
}
ExecStackItem current = Stacks.Peek();
if (!current.HasMoreExecution)
{
return(EndCall(current));
}
object execution;
ExecutionCallback callback;
current.HasMoreExecution = (current.Execution.PopStack(out execution, out callback, current.Environment));
//Console.WriteLine("current is " + execution);
if (execution is Execution2)
{
Execution2 exec = execution as Execution2;
ExecutionEnvironment e = exec.StartCall(current.Environment);
Stacks.Push(new ExecStackItem(exec, callback, e, current.Environment));
}
else
{
return(EndCall(current));
}
return(null);
}
public ExecStackItem(Execution2 exec, ExecutionCallback callback, ExecutionEnvironment env, ExecutionEnvironment preEnv)
{
Execution = exec;
Callback = callback;
Environment = env;
HasMoreExecution = true;
Previous = preEnv;
}
public RunThread(Instance instance, EventHandler fun, Event e, ExecutionEnvironment environment)
{
Instance = instance;
fun.Event = e;
IsStarted = false;
IsCompleted = false;
Stacks = new Stack <ExecStackItem>();
Execution2 exe = fun as Execution2;
Environment = new ExecutionEnvironment(environment, instance);
ExecutionEnvironment env = exe.StartCall(Environment);
Stacks.Push(new ExecStackItem(exe, FinishCallback, env, Environment));
}
