--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/make/jdk/src/classes/build/tools/jdwpgen/CommandNode.java	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,67 @@
+/*
+ * Copyright (c) 1998, 2013, 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 build.tools.jdwpgen;
+
+import java.util.*;
+import java.io.*;
+
+class CommandNode extends AbstractCommandNode {
+
+    void constrain(Context ctx) {
+        if (components.size() == 3) {
+            Node out   = components.get(0);
+            Node reply = components.get(1);
+            Node error = components.get(2);
+            if (!(out instanceof OutNode)) {
+                error("Expected 'Out' item, got: " + out);
+            }
+            if (!(reply instanceof ReplyNode)) {
+                error("Expected 'Reply' item, got: " + reply);
+            }
+            if (!(error instanceof ErrorSetNode)) {
+                error("Expected 'ErrorSet' item, got: " + error);
+            }
+        } else if (components.size() == 1) {
+            Node evt = components.get(0);
+            if (!(evt instanceof EventNode)) {
+                error("Expected 'Event' item, got: " + evt);
+            }
+        } else {
+            error("Command must have Out and Reply items or ErrorSet item");
+        }
+        super.constrain(ctx);
+    }
+
+    void genJavaClassSpecifics(PrintWriter writer, int depth) {
+        indent(writer, depth);
+        writer.println("static final int COMMAND = " +
+                       nameNode.value() + ";");
+    }
+
+    void genJava(PrintWriter writer, int depth) {
+        genJavaClass(writer, depth);
+    }
+}