--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/langtools/src/jdk.jshell/share/classes/jdk/internal/jshell/remote/RemoteCodes.java	Mon Oct 19 19:15:16 2015 +0200
@@ -0,0 +1,55 @@
+/*
+ * 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.internal.jshell.remote;
+
+import java.util.regex.Pattern;
+
+/**
+ * Communication constants shared between the main process and the remote
+ * execution process
+ * @author Robert Field
+ */
+public class RemoteCodes {
+    // Command codes
+    public static final int CMD_EXIT       = 0;
+    public static final int CMD_LOAD       = 1;
+    public static final int CMD_INVOKE     = 3;
+    public static final int CMD_CLASSPATH  = 4;
+    public static final int CMD_VARVALUE   = 5;
+
+    // Return result codes
+    public static final int RESULT_SUCCESS   = 100;
+    public static final int RESULT_FAIL      = 101;
+    public static final int RESULT_EXCEPTION = 102;
+    public static final int RESULT_CORRALLED = 103;
+    public static final int RESULT_KILLED    = 104;
+
+    public static final String DOIT_METHOD_NAME = "do_it$";
+    public static final String replClass = "\\$REPL(?<num>\\d+)[A-Z]*";
+    public static final Pattern prefixPattern = Pattern.compile("(REPL\\.)?" + replClass + "[\\$\\.]?");
+
+}