--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Implab/Parsing/AltToken.cs	Sun Jun 15 19:39:11 2014 +0400
@@ -0,0 +1,22 @@
+using Implab;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Implab.Parsing {
+    public class AltToken: BinaryToken {
+        public AltToken(Token left, Token right)
+            : base(left, right) {
+        }
+
+        public override void Accept(IVisitor visitor) {
+            Safe.ArgumentNotNull(visitor, "visitor");
+            visitor.Visit(this);
+        }
+        public override string ToString() {
+            return String.Format(Right is BinaryToken ? "{0}|({1})" : "{0}|{1}", Left, Right);
+        }
+    }
+}