--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/make/jdk/src/classes/build/tools/jdwpgen/SelectNode.java	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,150 @@
+/*
+ * 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 SelectNode extends AbstractGroupNode implements TypeNode {
+
+    AbstractSimpleTypeNode typeNode = null;
+
+    void prune() {
+        super.prune();
+        Iterator<Node> it = components.iterator();
+
+        if (it.hasNext()) {
+            Node typeNode = it.next();
+
+            if (typeNode instanceof ByteTypeNode ||
+                      typeNode instanceof IntTypeNode) {
+                this.typeNode = (AbstractSimpleTypeNode)typeNode;
+                it.remove();
+            } else {
+                error("Select must be based on 'int' or 'byte'");
+            }
+        } else {
+            error("empty");
+        }
+    }
+
+    void constrain(Context ctx) {
+        super.constrain(ctx);
+        if (components.size() < 2) {
+            error("Select must have at least two options");
+        }
+    }
+
+    void constrainComponent(Context ctx, Node node) {
+        node.constrain(ctx);
+        if (!(node instanceof AltNode)) {
+            error("Select must consist of selector followed by Alt items");
+        }
+    }
+
+    void document(PrintWriter writer) {
+        typeNode.document(writer);
+        super.document(writer);
+    }
+
+    String docType() {
+        // should never call this
+        error("Internal - called SelectNode.docType()");
+        return null;
+    }
+
+    String commonBaseClass() {
+        return name() + "Common";
+    }
+
+    private String commonVar() {
+        return " a" + commonBaseClass();
+    }
+
+    void genJavaClassSpecifics(PrintWriter writer, int depth) {
+        indent(writer, depth);
+        writer.println("abstract static class " + commonBaseClass() + " {");
+        if (context.isWritingCommand()) {
+            indent(writer, depth+1);
+            writer.println("abstract void write(PacketStream ps);");
+        } else {
+            indent(writer, depth+1);
+            writer.println("abstract " + typeNode.javaParam() + "();");
+        }
+        indent(writer, depth);
+        writer.println("}");
+        typeNode.genJavaDeclaration(writer, depth);
+        indent(writer, depth);
+        writer.println(commonBaseClass() + commonVar() + ";");
+        super.genJavaClassSpecifics(writer, depth);
+    }
+
+    void genJavaClassBodyComponents(PrintWriter writer, int depth) {
+        // don't naively include alt components
+    }
+
+    void genJavaWritingClassBody(PrintWriter writer, int depth,
+                                 String className) {
+        writer.println();
+        indent(writer, depth);
+        writer.print(className + "(" + typeNode.javaParam() + ", ");
+        writer.print(commonBaseClass() + commonVar());
+        writer.println(") {");
+        indent(writer, depth+1);
+        writer.println("this." + typeNode.name() + " = " + typeNode.name() + ";");
+        indent(writer, depth+1);
+        writer.println("this." + commonVar() + " =" + commonVar() + ";");
+        indent(writer, depth);
+        writer.println("}");
+    }
+
+    void genJavaWrites(PrintWriter writer, int depth) {
+        typeNode.genJavaWrite(writer, depth, typeNode.name());
+        indent(writer, depth);
+        writer.println(commonVar() + ".write(ps);");
+    }
+
+    void genJavaReads(PrintWriter writer, int depth) {
+        typeNode.genJavaRead(writer, depth, typeNode.name());
+        indent(writer, depth);
+        writer.println("switch (" + typeNode.name() + ") {");
+        for (Node node : components) {
+            AltNode alt = (AltNode)node;
+            alt.genJavaReadsSelectCase(writer, depth+1, commonVar());
+        }
+        indent(writer, depth);
+        writer.println("}");
+    }
+
+    public void genJavaDeclaration(PrintWriter writer, int depth) {
+        typeNode.genJavaDeclaration(writer, depth);
+        super.genJavaDeclaration(writer, depth);
+    }
+
+    public String javaParam() {
+        return typeNode.javaParam() + ", " + name() + " a" + name();
+    }
+}