--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/truffle/com.oracle.truffle.api/src/com/oracle/truffle/api/nodes/NodeInfo.java	Wed Jun 17 10:58:08 2015 +0200
@@ -0,0 +1,68 @@
+/*
+ * 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.  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.api.nodes;
+
+import java.lang.annotation.*;
+
+/**
+ * Annotation for providing additional information on nodes.
+ */
+@Retention(RetentionPolicy.RUNTIME)
+@Target(ElementType.TYPE)
+public @interface NodeInfo {
+
+    /**
+     * Short name representing the node that can be used for debugging.
+     *
+     * @return the short name
+     */
+    String shortName() default "";
+
+    /**
+     * Provides a rough estimate for the cost of the annotated {@link Node}. This estimate can be
+     * used by runtime systems or guest languages to implement heuristics based on Truffle ASTs.
+     *
+     * @see Node#getCost()
+     * @see NodeCost
+     */
+    NodeCost cost() default NodeCost.MONOMORPHIC;
+
+    /**
+     * A human readable explanation of the purpose of the annotated {@link Node}. Can be used e.g.
+     * for debugging or visualization purposes.
+     *
+     * @return the description
+     */
+    String description() default "";
+
+    /**
+     * A description, providing a user-readable explanation of the source language of the annotated
+     * {@link Node}. Can be used e.g. for debugging or visualization purposes. Typically this
+     * information is set only in an abstract base node for the language implementation.
+     *
+     * @return the description
+     */
+    String language() default "";
+}