--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/com.oracle.truffle.sl/src/com/oracle/truffle/sl/nodes/instrument/SLDefaultVisualizer.java	Thu Jul 24 16:14:44 2014 -0700
@@ -0,0 +1,89 @@
+/*
+ * Copyright (c) 2012, 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.
+ *
+ * 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.sl.nodes.instrument;
+
+import com.oracle.truffle.api.*;
+import com.oracle.truffle.api.frame.*;
+import com.oracle.truffle.api.instrument.*;
+import com.oracle.truffle.api.instrument.impl.*;
+import com.oracle.truffle.api.nodes.*;
+import com.oracle.truffle.sl.nodes.*;
+import com.oracle.truffle.sl.runtime.*;
+
+/**
+ * SLDefaultVisualizer provides methods to get the names of SL's internal Truffle AST nodes.
+ *
+ */
+public class SLDefaultVisualizer extends DefaultVisualizer {
+
+    private final SLASTPrinter astPrinter;
+
+    public SLDefaultVisualizer() {
+        this.astPrinter = new SLASTPrinter();
+    }
+
+    @Override
+    public ASTPrinter getASTPrinter() {
+        return astPrinter;
+    }
+
+    @Override
+    public String displayMethodName(Node node) {
+
+        if (node == null) {
+            return null;
+        }
+        RootNode root = node.getRootNode();
+        if (root instanceof SLRootNode) {
+            SLRootNode slRootNode = (SLRootNode) root;
+            return slRootNode.toString();
+
+        }
+        return "unknown";
+    }
+
+    @Override
+    public String displayCallTargetName(CallTarget callTarget) {
+        if (callTarget instanceof RootCallTarget) {
+            final RootCallTarget rootCallTarget = (RootCallTarget) callTarget;
+            SLRootNode slRootNode = (SLRootNode) rootCallTarget.getRootNode();
+            return slRootNode.toString();
+        }
+        return callTarget.toString();
+    }
+
+    @Override
+    public String displayValue(ExecutionContext context, Object value) {
+        if (value == SLNull.SINGLETON) {
+            return "null";
+        }
+        return value.toString();
+    }
+
+    @Override
+    public String displayIdentifier(FrameSlot slot) {
+
+        final Object id = slot.getIdentifier();
+        return id.toString();
+    }
+}