--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/com.oracle.truffle.interop/src/com/oracle/truffle/interop/messages/Write.java	Mon Apr 20 10:58:35 2015 +0200
@@ -0,0 +1,74 @@
+/*
+ * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+package com.oracle.truffle.interop.messages;
+
+import com.oracle.truffle.api.interop.messages.*;
+
+public final class Write implements Message {
+    private final Object receiver;
+    private final Argument id;
+    private final Argument value;
+
+    private Write(Object receiver, Argument id, Argument value) {
+        this.receiver = receiver;
+        this.id = id;
+        this.value = value;
+    }
+
+    public static Write create(Receiver receiver, Argument id, Argument value) {
+        return new Write(receiver, id, value);
+    }
+
+    public static Write create(Message receiver, Argument id, Argument value) {
+        return new Write(receiver, id, value);
+    }
+
+    public Argument getId() {
+        return id;
+    }
+
+    public Object getReceiver() {
+        return receiver;
+    }
+
+    public Argument getValue() {
+        return value;
+    }
+
+    public boolean matchStructure(Object message) {
+        if (!(message instanceof Write)) {
+            return false;
+        }
+        Write m1 = this;
+        Write m2 = (Write) message;
+        return MessageUtil.compareMessage(m1.getReceiver(), m2.getReceiver());
+    }
+
+    @Override
+    public String toString() {
+        return String.format("Write(%s, %s, %s)", receiver.toString(), id.toString(), value.toString());
+    }
+
+}