public static Maybe <T[]> List <T>(this TextParser p, ReadOnlySpan <char> separator, Func <TextParser, Maybe <T> > itemParser)
{
List <T> items = new List <T>();
if (p.Match("none"))
{
return(new Maybe <T[]>(new T[0]));
}
while (!p.EOF)
{
Maybe <TextParser> span = p.Before(separator);
if (span)
{
p.Seek(separator.Length);
}
var item = itemParser(span ? span : p);
if (!item)
{
return(item.Convert <T[]>());
}
items.Add(item.Value);
if (!span)
{
break;
}
}
return(new Maybe <T[]>(items.ToArray()));
}