private static object FuncFilter(object[] args)
{
if (!_mnr.CheckArgCount(2, "filter", args))
{
return(null);
}
object list = args[0];
string property;
property = args[1].ToString();
if (!(list is IEnumerable))
{
throw new VoltException("argument 1 of filter has to be IEnumerable", 0, 0);
}
IEnumerator ienum = ((IEnumerable)list).GetEnumerator();
List <object> newList = new List <object>();
while (ienum.MoveNext())
{
object val = VoltEngine.ProcessProperty(ienum.Current, property);
if (val is bool && (bool)val)
{
newList.Add(ienum.Current);
}
}
return(newList);
}
private static object FuncJoin(object[] args)
{
if (!_mnr.CheckArgCount(2, 3, "join", args))
{
return(null);
}
object list = args[0];
string property;
string delim;
if (args.Length == 3)
{
property = args[1].ToString();
delim = args[2].ToString();
}
else
{
property = string.Empty;
delim = args[1].ToString();
}
if (!(list is IEnumerable))
{
throw new VoltException("argument 1 of join has to be IEnumerable", 0, 0);
}
IEnumerator ienum = ((IEnumerable)list).GetEnumerator();
StringBuilder sb = new StringBuilder();
int index = 0;
while (ienum.MoveNext())
{
if (index > 0)
{
sb.Append(delim);
}
if (args.Length == 2) // do not evalulate property
{
sb.Append(ienum.Current);
}
else
{
sb.Append(VoltEngine.ProcessProperty(ienum.Current, property));
}
index++;
}
return(sb.ToString());
}