Orchard/src/Orchard.Web/Modules/Orchard.Widgets/SimpleScripting/Ast/AstNode.cs

using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Orchard.Widgets.SimpleScripting.Ast {
    public abstract class AstNode {
        public virtual IEnumerable<AstNode> Children {
            get {
                return Enumerable.Empty<AstNode>();
            }
        }

        public abstract object Accept(AstVisitor visitor);

        public override string ToString() {
            var sb = new StringBuilder();
            sb.Append(this.GetType().Name);
            var ewt = (this as IAstNodeWithToken);
            if (ewt != null) {
                sb.Append(" - ");
                sb.Append(ewt.Token);
            }
            return sb.ToString();
        }
    }
}