--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/truffle/com.oracle.truffle.api.dsl/src/com/oracle/truffle/api/dsl/UnsupportedSpecializationException.java	Wed Jun 17 10:58:08 2015 +0200
@@ -0,0 +1,86 @@
+/*
+ * 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;
+
+import java.util.*;
+
+import com.oracle.truffle.api.CompilerDirectives.TruffleBoundary;
+import com.oracle.truffle.api.nodes.*;
+
+/**
+ * Thrown by the generated code of Truffle-DSL if no compatible Specialization could be found for
+ * the provided values.
+ */
+public final class UnsupportedSpecializationException extends RuntimeException {
+
+    private static final long serialVersionUID = -2122892028296836269L;
+
+    private final Node node;
+    private final Node[] suppliedNodes;
+    private final Object[] suppliedValues;
+
+    @TruffleBoundary
+    public UnsupportedSpecializationException(Node node, Node[] suppliedNodes, Object... suppliedValues) {
+        Objects.requireNonNull(suppliedNodes, "The suppliedNodes parameter must not be null.");
+        if (suppliedNodes.length != suppliedValues.length) {
+            throw new IllegalArgumentException("The length of suppliedNodes must match the length of suppliedValues.");
+        }
+        this.node = node;
+        this.suppliedNodes = suppliedNodes;
+        this.suppliedValues = suppliedValues;
+    }
+
+    @Override
+    public String getMessage() {
+        return String.format("Unexpected values provided for %s: %s", node, Arrays.toString(suppliedValues));
+    }
+
+    /**
+     * Returns the {@link Node} that caused the this {@link UnsupportedSpecializationException}.
+     */
+    public Node getNode() {
+        return node;
+    }
+
+    /**
+     * Returns the children of the {@link Node} returned by {@link #getNode()} which produced the
+     * values returned by {@link #getSuppliedValues()}. The array returned by
+     * {@link #getSuppliedNodes()} has the same length as the array returned by
+     * {@link #getSuppliedValues()}. Never returns null.
+     */
+    public Node[] getSuppliedNodes() {
+        return suppliedNodes;
+    }
+
+    /**
+     * Returns the dynamic values that were supplied to the node.The array returned by
+     * {@link #getSuppliedNodes()} has the same length as the array returned by
+     * {@link #getSuppliedValues()}. Never returns null.
+     */
+    public Object[] getSuppliedValues() {
+        return suppliedValues;
+    }
+
+}