/// <summary>
/// 実行
/// </summary>
/// <param name="arg"></param>
/// <returns></returns>
protected override GrassFunc Perform(GrassFunc arg)
{
//追加のローカルスタック
Stack <GrassFunc> localStack = new Stack <GrassFunc>();
localStack.Push(arg);
foreach (var tuple in _SentenceList.Select((sentence, index) => new { sentence, index }))
{
if (tuple.sentence.CountUpperCaseW > tuple.index + 1 + _FuncStack.Count ||
tuple.sentence.CountLowerCaseW > tuple.index + 1 + _FuncStack.Count)
{
System.Diagnostics.Debug.WriteLine("スタック内関数の指定は正常？？");
}
GrassFunc funcApp = (tuple.sentence.CountUpperCaseW > tuple.index + 1) ?
_FuncStack.Get(tuple.sentence.CountUpperCaseW - tuple.index - 2) :
localStack.Get(tuple.sentence.CountUpperCaseW - 1);
GrassFunc argApp = (tuple.sentence.CountLowerCaseW > tuple.index + 1) ?
_FuncStack.Get(tuple.sentence.CountLowerCaseW - tuple.index - 2) :
localStack.Get(tuple.sentence.CountLowerCaseW - 1);
//GrassFunc func2 = (funcApp == argApp) ? funcApp.Clone() : funcApp;
//localStack.Push(func2.Apply(argApp));
localStack.Push(funcApp.Apply(argApp));
}
return(localStack.Peek());
}
