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
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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