--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/langtools/src/jdk.jshell/share/classes/jdk/jshell/Util.java	Mon Oct 19 19:15:16 2015 +0200
@@ -0,0 +1,94 @@
+ /*
+ * Copyright (c) 2014, 2015, 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 jdk.jshell;
+
+import java.util.stream.Stream;
+import java.util.stream.StreamSupport;
+import javax.lang.model.element.Name;
+import static jdk.internal.jshell.remote.RemoteCodes.DOIT_METHOD_NAME;
+import static jdk.internal.jshell.remote.RemoteCodes.prefixPattern;
+
+/**
+ * Assorted shared utilities.
+ * @author Robert Field
+ */
+class Util {
+
+    static final String REPL_CLASS_PREFIX = "$REPL";
+    static final String REPL_DOESNOTMATTER_CLASS_NAME = REPL_CLASS_PREFIX+"00DOESNOTMATTER";
+
+    static boolean isDoIt(Name name) {
+        return isDoIt(name.toString());
+    }
+
+    static boolean isDoIt(String sname) {
+        return sname.equals(DOIT_METHOD_NAME);
+    }
+
+    static String expunge(String s) {
+        StringBuilder sb = new StringBuilder();
+        for (String comp : prefixPattern.split(s)) {
+            sb.append(comp);
+        }
+        return sb.toString();
+    }
+
+    static String asLetters(int i) {
+        if (i == 0) {
+            return "";
+        }
+
+        char buf[] = new char[33];
+        int charPos = 32;
+
+        i = -i;
+        while (i <= -26) {
+            buf[charPos--] = (char) ('A'-(i % 26));
+            i = i / 26;
+        }
+        buf[charPos] = (char) ('A'-i);
+
+        return new String(buf, charPos, (33 - charPos));
+    }
+
+
+    static String trimEnd(String s) {
+        int last = s.length() - 1;
+        int i = last;
+        while (i >= 0 && Character.isWhitespace(s.charAt(i))) {
+            --i;
+        }
+        if (i != last) {
+            return s.substring(0, i + 1);
+        } else {
+            return s;
+        }
+    }
+
+    static <T> Stream<T> stream(Iterable<T> iterable) {
+        return StreamSupport.stream(iterable.spliterator(), false);
+    }
+}