1 /* 2 * Copyright (c) 2014, 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 * @bug 8035776 27 * @summary Consistent Lambda construction 28 */ 29 30 import java.lang.invoke.CallSite; 31 import java.lang.invoke.LambdaMetafactory; 32 import java.lang.invoke.LambdaConversionException; 33 import java.lang.invoke.MethodHandle; 34 import java.lang.invoke.MethodHandles; 35 import java.lang.invoke.MethodType; 36 import java.util.ArrayList; 37 import java.util.List; 38 39 import LambdaReceiver_anotherpkg.LambdaReceiver_A; 40 41 public class LambdaReceiverBridge extends LambdaReceiver_A { 42 43 interface IA { m(LambdaReceiver_A x)44 int m(LambdaReceiver_A x); 45 } 46 47 static MethodHandles.Lookup l; 48 static MethodHandle h; mt(Class<?> k)49 private static MethodType mt(Class<?> k) { return MethodType.methodType(k); } mt(Class<?> k, Class<?> k2)50 private static MethodType mt(Class<?> k, Class<?> k2) { return MethodType.methodType(k, k2); } mf(List<String> errs, MethodType mts, MethodType mtf, boolean shouldWork)51 private static void mf(List<String> errs, MethodType mts, MethodType mtf, boolean shouldWork) { 52 } 53 main(String[] args)54 public static void main(String[] args) throws Throwable { 55 l = MethodHandles.lookup(); 56 h = l.findVirtual(LambdaReceiver_A.class, "f", mt(int.class)); 57 MethodType X = mt(int.class, LambdaReceiverBridge.class); 58 MethodType A = mt(int.class, LambdaReceiver_A.class); 59 MethodType mti = mt(IA.class); 60 CallSite cs = LambdaMetafactory.altMetafactory(l, "m", mti,X,h,X, 61 LambdaMetafactory.FLAG_BRIDGES, 1, A); 62 IA p = (IA)cs.dynamicInvoker().invoke(); 63 LambdaReceiver_A lra = new LambdaReceiver_A(); 64 try { 65 p.m(lra); 66 } catch (ClassCastException cce) { 67 return; 68 } 69 throw new AssertionError("CCE expected"); 70 } 71 } 72