Code Spelling Checker Extension for Visual Studio 2010 (VSX)

using System;


namespace DigitalSamurai.SpellSharp.InputProcessing
{
    public abstract partial class Processor<TLexicalElements>
    {
        public class TokenNode
        {
            private Func<Token> getNext;

            public Token Token { get; private set; }
            public TokenNode Previous { get; private set; }

            #region public TokenNode Next { get (jit); }
            private TokenNode _Next;

            public TokenNode Next
            {
                get
                {
                    if (_Next == null)
                    {
                        _Next = Create (getNext, this);
                    }

                    return _Next;
                }
            }
            #endregion


            private TokenNode (Func<Token> getNext, Token token, TokenNode previous)
            {
                this.getNext = getNext;
                Token = token;
                Previous = previous;
            }


            public static TokenNode Create (Func<Token> getNext)
            {
                if (getNext == null)
                {
                    throw new ArgumentNullException ("getNext");
                }

                return Create (getNext, null);
            }

            private static TokenNode Create (Func<Token> getNext, TokenNode previous)
            {
                var token = getNext ();
                if (token == null)
                {
                    return null;
                }

                return new TokenNode (getNext, token, previous);
            }
        }
    }
}