wiki example

[Pavel]

Hi everyone,

For some reason i'm struggling with this: I need to to parse the string (without the quotes)

"one, two|three {{four|five}}six [[seven [[eight]] ]]"

into a list of Items, so that the items are 

Word: one

Word: two

Word: three

Reference: 

  Word: four

  Word: five

Word: six

This is what I have, and i'm failing on the {{four|five}} part. I haven't gotten to the [[ ]] :

    public class Reference : Item {

        private IEnumerable<Item> refContent;

        public Reference(IEnumerable<Item> refContent)

        {

            this.refContent = refContent;

        }

        public override string ToString()

        {

            return @"{{" +

                refContent.Aggregate("", (s, c) => s + c)

                 + @"}}";

        }

    }

    public class Item {}

    public class Word : Item

    {

        public Word(string word)

        {

            this.Content = word;

        }

        public string Content { get; set; }

        public override string ToString()

        {

            return Content;

        }

    }

static readonly Parser<string> WordSeparator = 

            from separator in Parse.AnyChar

                .Except(Parse.LetterOrDigit)

                .Except(Parse.String("{{"))

                .Many().Text().Token() 

            select separator;

        static readonly Parser<Item> Word =

            from first in Parse.Letter.Once()

            from rest in Parse.LetterOrDigit.Many()//XOr(Parse.Char('-')).XOr(Parse.Char('_')).Many()

            from trailing in WordSeparator

            //from whitespaceOrEnd in Parse.WhiteSpace.Many()

            select new Word(new string(first.Concat(rest).ToArray()));

         static readonly Parser<Reference> Reference =

            from opening in Parse.String("{{")

            from refContent in Parse.Ref(() => Item.Select(n => new Reference(n))

            from closing in Parse.String("}}")

            select refContent;

        public static readonly Parser<IEnumerable<Item>> Item =

            from word in Reference.Or(Word).Many().Token()

            //from whitespaceOrEnd in Parse.WhiteSpace.Many()

            select word;

If anyone has any ideas, please let me know. I've tried looking at the examples, and i think i'm close, but just missing something. 

Thanks in advance!

-Pavel