/// <summary>
        /// 获取操作数
        /// </summary>
        private BitArray GetOperator(string expression)
        {
            Regex  reg              = new Regex(@"\(\S+\)");
            Match  match            = reg.Match(expression);
            string resultExpression = match.Value.Substring(1);

            resultExpression = resultExpression.Substring(0, resultExpression.Length - 1);
            return(ExpressionParser.ParseExpression(resultExpression));
        }
        public override BitArray Handle(string expression)
        {
            expression = expression.Trim();

            // 左结合,因此先从最右开始
            string op1 = expression.Substring(0, expression.LastIndexOf('+')).Trim();
            string op2 = expression.Substring(expression.LastIndexOf('+') + 1).Trim();
            // 将左边的表达式和右边的表达式交给解释器处理
            BitArray result1 = ExpressionParser.ParseExpression(op1);
            BitArray result2 = ExpressionParser.ParseExpression(op2);

            return(result1.Xor(result2));
        }
        public override BitArray Handle(string expression)
        {
            expression = expression.Trim();

            // 进行变量的绑定,因为变量可能是数组形式
            string variableKey = expression.Substring(0, expression.IndexOf('=')).Trim();

            variableKey = BindingVariable(variableKey);

            // 进行赋值运算符右边表达式的计算
            string   variableValue = expression.Substring(expression.IndexOf('=') + 1).Trim();
            BitArray result        = ExpressionParser.ParseExpression(variableValue);

            // 更新并返回变量的数值
            Parser.VariableStorage.AddVariable(variableKey, result);
            return(result);
        }