public class RawCondition : ACondition
    {
        public string name;
        public override bool True()
        {
            return name == "a";//此处是简单判断，是a则返回True
        }
    }

    var condition1 = ConditionHelper.ParseToConditon("(a and b) or b");
    Console.WriteLine(condition1.True());//返回False
    
    var condition2 = ConditionHelper.ParseToConditon("a or b or a");
    Console.WriteLine(condition2.True());//返回True