--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/com.oracle.truffle.ruby.nodes/src/com/oracle/truffle/ruby/nodes/WriteNode.java	Mon Jan 06 17:12:09 2014 +0000
@@ -0,0 +1,23 @@
+/*
+ * Copyright (c) 2013 Oracle and/or its affiliates. All rights reserved. This
+ * code is released under a tri EPL/GPL/LGPL license. You can use it,
+ * redistribute it and/or modify it under the terms of the:
+ *
+ * Eclipse Public License version 1.0
+ * GNU General Public License version 2
+ * GNU Lesser General Public License version 2.1
+ */
+package com.oracle.truffle.ruby.nodes;
+
+/**
+ * Interface for all nodes which write something, providing a method to transform them to read the
+ * same thing.
+ */
+public interface WriteNode {
+
+    /**
+     * Return a new node that performs the equivalent read operation to this node's write.
+     */
+    RubyNode makeReadNode();
+
+}