private void eval_AdditionalFunctionEventHandler(object sender, AdditionalFunctionEventArgs e)
{
object[] parameters = e.GetParameters();
object value;
//检查是否在默认的函数库中
switch (e.Name)
{
case "GetProperty":
break;
case "Get":
if (Context == null)
{
throw new ApplicationException("执行函数失败 上下文为空");
}
if (Context == null || parameters == null || parameters.Length < 1 || string.IsNullOrEmpty(parameters[0] as string))
{
throw new ApplicationException("执行函数失败 入参输入为空");
}
if (!Context.TryGetValue(parameters[0] as string, out value))
{
throw new ApplicationException("执行函数失败 获取上下文时 没有键为" + parameters[0] + "的值");
}
e.ReturnValue = value;
return;
default:
string className = null;
//检查是否在当前应用的函数库中
if (DynStringResolver.MethodDict.TryGetValue(e.Name, out className))
{
string methodName = e.Name;
Dictionary <string, object> dict = new Dictionary <string, object>();
DynClass function = DynTypeManager.GetFunction(className);
if (function == null)
{
throw new ApplicationException("执行函数失败 没有主键为" + className + "的函数类 请查看初始化");
}
DynMethod method = function.GetMethod(methodName);
DynParameter[] dynParameters = method.GetParameters();
for (int i = 0; i < dynParameters.Length; i++)
{
value = parameters.Length > i ? parameters[i] : null;
switch (dynParameters[i].CollectionType)
{
case CollectionType.None:
value = DynStringResolver.GetTrueType(value, dynParameters[i].DynType);
break;
case CollectionType.List:
IList valueList = value as IList;
for (int j = 0; j < valueList.Count; j++)
{
valueList[j] = DynStringResolver.GetTrueType(valueList[j], dynParameters[i].DynType);
}
break;
case CollectionType.Set:
case CollectionType.Map:
break;
default:
break;
}
dict.Add(dynParameters[i].Name, value);
}
e.ReturnValue = DynTypeManager.MethodHandler(null, className + "_" + methodName, dict);
}
else
{
throw new ApplicationException("无此函数:" + e.Name);
}
break;
}
}
public object GetDefaultValue()
{
DynObject dynDefaultValue = null;
if (ContainsAttribute("DefaultValue"))
{
dynDefaultValue = GetAttribute("DefaultValue");
}
bool isHaveDefaultValue = false;
if (dynDefaultValue != null && !string.IsNullOrEmpty(dynDefaultValue["Value"] as string))
{
string defaultType = dynDefaultValue["Type"] as string;
string defaultValue = dynDefaultValue["Value"] as string;
switch (defaultType)
{
case "Direct":
object trueValue = null;
if (TryPasentValue(defaultValue, this, ref trueValue))
{
isHaveDefaultValue = true;
return(trueValue);
}
break;
case "Compute":
return(DynStringResolver.Resolve(defaultValue));
default:
break;
}
}
if (!isHaveDefaultValue)
{
switch (CollectionType)
{
case CollectionType.None:
if (IsNotNull)
{
switch (DynType)
{
case DynType.Void:
case DynType.Bool:
return(false);
case DynType.Byte:
return(null);
case DynType.String:
return("");
case DynType.Struct:
return(null);
case DynType.DateTime:
return(DateTime.Now);
case DynType.Double:
return(0.0);
case DynType.Decimal:
return((decimal)0.0);
case DynType.I16:
return((short)0);
case DynType.I32:
return((int)0);
case DynType.I64:
return((long)0);
default:
break;
}
}
else
{
return(null);;
}
break;
case CollectionType.List:
switch (DynType)
{
case DynType.Void:
case DynType.Bool:
return(new List <bool>());
case DynType.Byte:
return(new List <Byte>());
case DynType.String:
return(new List <String>());
case DynType.Struct:
return(new List <DynObject>());
case DynType.Double:
return(new List <Double>());
case DynType.Decimal:
return(new List <Decimal>());
case DynType.I16:
return(new List <Int16>());
case DynType.I32:
return(new List <Int32>());
case DynType.I64:
return(new List <Int64>());
case DynType.DateTime:
return(new List <DateTime>());
default:
break;
}
break;
case CollectionType.Map:
return(new Dictionary <string, object>());
case CollectionType.Set:
throw new ApplicationException("暂不支持Set集合类型");
}
}
return(null);
}