private decimal CalcExpression(TimeSpan ts, string expression)
{
if (!string.IsNullOrEmpty(expression))
{
expression = expression.Replace("Days", Math.Round(ts.TotalDays, 2).ToString());
expression = expression.Replace("Hours", Math.Round(ts.TotalHours, 2).ToString());
expression = expression.Replace("Minutes", Math.Round(ts.TotalMinutes, 2).ToString());
expression = expression.Replace("Price", this.Price.ToString());
expression = expression.Replace("Day", ts.Days.ToString());
expression = expression.Replace("Hour", ts.Hours.ToString());
expression = expression.Replace("Minute", ts.Minutes.ToString());
NHExt.Runtime.Util.RPN rpn = new NHExt.Runtime.Util.RPN();
try
{
rpn.Parse(expression);
return Convert.ToDecimal(rpn.Evaluate());
}
catch
{
NHExt.Runtime.Logger.LoggerHelper.Error("��ʽ" + this.Device.Expression + "��ʽ����,������Ĺ�ʽΪ��" + expression);
throw new Exception("���ü��㹫ʽ����");
}
}
return 0;
}
public virtual decimal Evaluate(string expression)
{
if (string.IsNullOrEmpty(expression))
{
throw new Exception("���ʽ����Ϊ��");
}
string[] fields = expression.Split(new char[6] { '+', '-', '*', '/', '(', ')' }, StringSplitOptions.RemoveEmptyEntries);
if (fields.Count() > 0)
{
Regex r = new Regex(@"^[1-9]\d*");//ȥ������
List<string> fieldList = new List<string>(fields);
fieldList.Sort((a, b) =>
{
if (a.Length > b.Length)
{
return -1;
}
else if (a.Length == b.Length)
{
return 0;
}
else
{
return 1;
}
});
fields = fieldList.ToArray();
foreach (string field in fields)
{
//��������־Ͳ���
if (r.IsMatch(field))
{
continue;
}
decimal objV = 0;
if (field.StartsWith("$."))
{
//���÷����ȡ����$.IWEHAVE.ERP.PubBP.Agent.GetYearDaysBPProxy(Month:12,Year:2015)
string newStr = field.Replace("$.", "");
string bpStr = newStr.Substring(0, newStr.IndexOf("{"));
string argStr = newStr.Substring(newStr.IndexOf("{") + 1, (newStr.LastIndexOf("}") - newStr.IndexOf("{") - 1));
NHExt.Runtime.Proxy.AgentInvoker invoker = new NHExt.Runtime.Proxy.AgentInvoker();
invoker.AssemblyName = bpStr;
invoker.DllName = bpStr.Substring(0, bpStr.IndexOf("Agent.")) + "Agent.dll";
string[] args = argStr.Split(new char[1] { ',' }, StringSplitOptions.RemoveEmptyEntries);
if (args.Count() > 0)
{
foreach (string arg in args)
{
//$.IWEHAVE.ERP.PubBP.Agent.GetYearDaysBPProxy(Month:#.PMerchantRent.Rent,Year:2015)
string fieldName = arg.Substring(0, arg.IndexOf(":"));
object fieldValue = new object();
if (!arg.Contains("@"))
{
throw new Exception("���ʽ��������û�������Զ��庯����������");
}
string fieldArgV = arg.Substring(arg.IndexOf(":") + 1, (arg.IndexOf("@") - arg.IndexOf(":") - 1));//����ֵ
string fieldType = arg.Substring(arg.IndexOf("@") + 1);//��������
if (fieldArgV.StartsWith("#."))//�����Ļ���Ҫ�Ȼ�ȡ����
{
fieldArgV = fieldArgV.Replace("#.", "");
var objValue = this.GetData(fieldArgV);
if (objValue != null)
{
fieldValue = this.GetValue(objValue, fieldType);
}
}
else
{
fieldValue = this.GetValue(fieldArgV, fieldType);
}
invoker.AppendField(new NHExt.Runtime.Proxy.PropertyField() { FieldName = fieldName, FieldValue = fieldValue });
}
}
Object obj = invoker.Do();
if (obj != null)
{
objV = Convert.ToDecimal(obj);
}
}
else
{
var obj = this.GetData(field);
if (obj != null)
{
objV = Convert.ToDecimal(obj);
}
}
expression = expression.Replace(field, objV.ToString());
}
}
try
{
NHExt.Runtime.Util.RPN rpn = new NHExt.Runtime.Util.RPN();
rpn.Parse(expression);
return Convert.ToDecimal(rpn.Evaluate());
}
catch (Exception ex)
{
throw new Exception("���㹫ʽ��ʽ����");
}
}
