--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/com.oracle.truffle.api/src/com/oracle/truffle/api/Arguments.java	Tue Dec 18 17:59:32 2012 +0100
@@ -0,0 +1,46 @@
+/*
+ * Copyright (c) 2012, 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.
+ *
+ * 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.api;
+
+/**
+ * Base class for arguments passed to guest language methods via the
+ * {@link CallTarget#call(com.oracle.truffle.api.frame.PackedFrame, Arguments)} method. A guest language create a
+ * subclass with immutable fields representing the arguments passed to a guest language method. The {@link Arguments}
+ * object must be created immediately before a method call and it must not be stored in a field or cast to
+ * {@link java.lang.Object}.
+ */
+public class Arguments {
+
+    /**
+     * Constant that can be used as an argument to
+     * {@link CallTarget#call(com.oracle.truffle.api.frame.PackedFrame, Arguments)} in case no arguments should be
+     * supplied.
+     */
+    public static final Arguments EMPTY_ARGUMENTS = new Arguments();
+
+    /**
+     * Constructs an empty {@link Arguments} instance. Guest languages should create a subclass to specify their own arguments.
+     */
+    protected Arguments() {
+    }
+}