public void Evaluate(StoryInstance instance, StoryMessageHandler handler, BoxedValue iterator, BoxedValueList args)
{
var stackInfo = StoryLocalInfo.New();
var runtime = StoryRuntime.New();
//调用实参部分需要在栈建立之前运算，结果需要记录在栈上
for (int i = 0; i < m_LoadedArgs.Count; ++i)
{
stackInfo.Args.Add(m_LoadedArgs[i].Clone());
}
foreach (var pair in m_LoadedOptArgs)
{
stackInfo.OptArgs.Add(pair.Key, pair.Value.Clone());
}
runtime.Arguments = instance.NewBoxedValueList();
runtime.Arguments.Capacity = stackInfo.Args.Count;
for (int i = 0; i < stackInfo.Args.Count; i++)
{
stackInfo.Args[i].Evaluate(instance, handler, iterator, args);
runtime.Arguments.Add(stackInfo.Args[i].Value);
}
runtime.Iterator = stackInfo.Args.Count;
foreach (var pair in stackInfo.OptArgs)
{
pair.Value.Evaluate(instance, handler, iterator, args);
}
//实参处理完，进入函数体执行，创建新的栈
PushStack(instance, handler, stackInfo, runtime);
try {
for (int i = 0; i < m_ArgNames.Count; ++i)
{
if (i < stackInfo.Args.Count)
{
instance.SetVariable(m_ArgNames[i], stackInfo.Args[i].Value);
}
else
{
instance.SetVariable(m_ArgNames[i], BoxedValue.NullObject);
}
}
foreach (var pair in stackInfo.OptArgs)
{
instance.SetVariable(pair.Key, pair.Value.Value);
}
Prepare(runtime);
stackInfo.HaveValue = true;
runtime.Tick(instance, handler, long.MaxValue);
BoxedValue val;
instance.TryGetVariable(m_ReturnName, out val);
stackInfo.Value = val;
} finally {
instance.RecycleBoxedValueList(runtime.Arguments);
PopStack(instance, handler);
}
}
protected override bool ExecCommand(StoryInstance instance, StoryMessageHandler handler, long delta, BoxedValue iterator, BoxedValueList args)
{
var runtime = handler.PeekRuntime();
if (runtime.CompositeReentry)
{
return(false);
}
bool ret = false;
var stackInfo = handler.PeekLocalInfo();
for (int i = 0; i < m_ArgNames.Count; ++i)
{
if (i < stackInfo.Args.Count)
{
instance.SetVariable(m_ArgNames[i], stackInfo.Args[i].Value);
}
else
{
instance.SetVariable(m_ArgNames[i], BoxedValue.NullObject);
}
}
foreach (var pair in stackInfo.OptArgs)
{
instance.SetVariable(pair.Key, pair.Value.Value);
}
Prepare(handler);
runtime = handler.PeekRuntime();
runtime.Arguments = instance.NewBoxedValueList();
runtime.Arguments.Capacity = stackInfo.Args.Count;
for (int i = 0; i < stackInfo.Args.Count; i++)
{
runtime.Arguments.Add(stackInfo.Args[i].Value);
}
runtime.Iterator = stackInfo.Args.Count;
//没有wait之类命令直接执行
runtime.Tick(instance, handler, delta);
instance.RecycleBoxedValueList(runtime.Arguments);
if (runtime.CommandQueue.Count == 0)
{
handler.PopRuntime(instance);
}
else
{
//遇到wait命令，跳出执行，之后直接在StoryMessageHandler里执行栈顶的命令队列（降低开销）
ret = true;
}
return(ret);
}