/// <summary>
/// 获取此上下文无关产生式列表的复制品
/// </summary>
/// <returns></returns>
public object Clone()
{
var result = new ContextfreeProductionList();
result.AddRange(
from item in this
select(item.Clone() as ContextfreeProduction));
return(result);
}
/// <summary>
/// From
/// </summary>
/// <param name="xContextfreeProductionList"></param>
/// <returns></returns>
public static ContextfreeProductionList From(XElement xContextfreeProductionList)
{
if (xContextfreeProductionList == null)
{
return(null);
}
if (xContextfreeProductionList.Name != strContextfreeProductionList)
{
return(null);
}
var result = new ContextfreeProductionList();
result.AddRange(
from item in xContextfreeProductionList.Elements(ContextfreeProduction.strContextfreeProduction)
select ContextfreeProduction.From(item)
);
return(result);
}
