WWW DSL using Irony - Part 1

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Irony.Compiler;
using Irony.Runtime;
using System.Threading;
using Irony.Compiler.AST;

namespace WWWDSL
{
    public class GotoJumpException : Exception
    {   
        public Token LabelId { get; private set; }

        public GotoJumpException(Token label)
        {
            LabelId = label;
        }
    }

    public class LabelNode : AstNode
    {
        public LabelNode(NodeArgs args) : base(args)
        {
        }
    }

    public class GotoJumpNode : AstNode
    {
        private Token labelNode_;

        public GotoJumpNode(NodeArgs args, AstNode labelNode)
            : base(args)
        {
            ChildNodes.Clear();

            labelNode_ = (Token)labelNode;
            AddChild("label", labelNode_);
        }

        protected override void DoEvaluate(EvaluationContext context)
        {
            throw new GotoJumpException(labelNode_);
        }
    }
}