--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/ast/CodeNames.java	Mon Jul 01 20:58:32 2013 +0200
@@ -0,0 +1,90 @@
+/*
+ * 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.dsl.processor.ast;
+
+import java.util.*;
+
+import javax.lang.model.element.*;
+
+public abstract class CodeNames {
+
+    private static Map<String, Name> names = new HashMap<>();
+
+    public static Name of(String value) {
+        Name name = names.get(value);
+        if (name == null) {
+            name = new NameImpl(value);
+            names.put(value, name);
+        }
+        return name;
+    }
+
+    private static class NameImpl implements Name {
+
+        private final String name;
+
+        public NameImpl(String name) {
+            this.name = name;
+        }
+
+        @Override
+        public int length() {
+            return name.length();
+        }
+
+        @Override
+        public char charAt(int index) {
+            return name.charAt(index);
+        }
+
+        @Override
+        public CharSequence subSequence(int start, int end) {
+            return name.subSequence(start, end);
+        }
+
+        @Override
+        public boolean contentEquals(CharSequence cs) {
+            return name.contentEquals(cs);
+        }
+
+        @Override
+        public boolean equals(Object obj) {
+            if (obj instanceof Name) {
+                return ((Name) obj).contentEquals(name);
+            }
+            return super.equals(obj);
+        }
+
+        @Override
+        public int hashCode() {
+            return name.hashCode();
+        }
+
+        @Override
+        public String toString() {
+            return name;
+        }
+
+    }
+
+}