/// <summary>
/// 自定义参数
/// </summary>
/// <param name="parameter"></param>
/// <returns></returns>
protected virtual Operand GetParameter(string parameter)
{
if (_dict.TryGetValue(parameter, out Operand operand))
{
return(operand);
}
return(Operand.Error($"Parameter [{parameter}] is missing."));
}
/// <summary>
/// 自定义 函数
/// </summary>
/// <param name="funcName"></param>
/// <param name="operands"></param>
/// <returns></returns>
protected virtual Operand ExecuteDiyFunction(string funcName, List <Operand> operands)
{
if (DiyFunction != null)
{
return(DiyFunction.Invoke(funcName, operands));
}
return(Operand.Error($"DiyFunction [{funcName}] is missing."));
}
/// <summary>
/// 创建操作数
/// </summary>
/// <param name="txt"></param>
/// <returns></returns>
public static Operand CreateJson(string txt)
{
if ((txt.StartsWith("{") && txt.EndsWith("}")) || (txt.StartsWith("[") && txt.EndsWith("]")))
{
try {
var json = JsonMapper.ToObject(txt);
return(Operand.Create(json));
} catch (Exception) { }
}
return(Operand.Error("string to json is error!"));
}
