1 /* 2 * Copyright (c) 2020, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 /* 25 * @test 26 * @summary Test a hidden inline class. 27 * @library /test/lib 28 * @modules jdk.compiler 29 * @compile HiddenPoint.jcod 30 * @run main HiddenInlineClassTest 31 */ 32 33 import java.io.File; 34 import java.lang.invoke.MethodHandles; 35 import java.lang.invoke.MethodHandles.Lookup; 36 import static java.lang.invoke.MethodHandles.Lookup.ClassOption.*; 37 import java.nio.file.Files; 38 import java.nio.file.Path; 39 import java.nio.file.Paths; 40 41 public class HiddenInlineClassTest { 42 43 static final Path CLASSES_DIR = Paths.get(System.getProperty("test.classes", ".")); 44 String hello = "hello"; 45 46 static byte[] readClassFile(String classFileName) throws Exception { 47 Path path = CLASSES_DIR.resolve(classFileName.replace('.', File.separatorChar) + ".class"); 48 return Files.readAllBytes(path); 49 } 50 51 public static void main(String[] args) throws Throwable { 52 Lookup lookup = MethodHandles.lookup(); 53 byte[] bytes = readClassFile("HiddenPoint"); 54 55 // Define a hidden class that is an inline type. 56 Class<?> c = lookup.defineHiddenClass(bytes, true).lookupClass(); 57 Object hp = c.newInstance(); 58 String s = (String)c.getMethod("getValue").invoke(hp); 59 if (!s.equals("x: 0, y: 0")) { 60 throw new RuntimeException( 61 "wrong value returned by method getValue() in inline hidden class: " + s); 62 } 63 } 64 65 } 66