--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/truffle/com.oracle.truffle.api.dsl/src/com/oracle/truffle/api/dsl/internal/NodeFactoryBase.java	Wed Jun 17 10:58:08 2015 +0200
@@ -0,0 +1,66 @@
+/*
+ * Copyright (c) 2012, 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.dsl.internal;
+
+import java.util.*;
+
+import com.oracle.truffle.api.dsl.*;
+import com.oracle.truffle.api.nodes.*;
+
+/**
+ * This is NOT public API. Do not use directly. This code may change without notice.
+ */
+public abstract class NodeFactoryBase<T> implements NodeFactory<T> {
+
+    private final Class<T> nodeClass;
+    private final Class<?>[][] nodeSignatures;
+    private final Class<? extends Node>[] executionSignatures;
+
+    @SuppressWarnings("unchecked")
+    public NodeFactoryBase(Class<T> nodeClass, Class<?>[] executionSignatures, Class<?>[][] nodeSignatures) {
+        this.nodeClass = nodeClass;
+        this.nodeSignatures = nodeSignatures;
+        this.executionSignatures = (Class<? extends Node>[]) executionSignatures;
+    }
+
+    public abstract T createNode(Object... arguments);
+
+    public final Class<T> getNodeClass() {
+        return nodeClass;
+    }
+
+    public final List<List<Class<?>>> getNodeSignatures() {
+        List<List<Class<?>>> signatures = new ArrayList<>();
+        for (int i = 0; i < nodeSignatures.length; i++) {
+            signatures.add(Arrays.asList(nodeSignatures[i]));
+        }
+        return signatures;
+    }
+
+    public final List<Class<? extends Node>> getExecutionSignature() {
+        return Arrays.asList(executionSignatures);
+    }
+
+}