1 /* 2 * Copyright (c) 2024, 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 * @run testng TestInvokeSuper 27 */ 28 29 import org.testng.Assert; 30 import org.testng.annotations.Test; 31 32 import java.lang.invoke.MethodHandles; 33 import java.lang.reflect.Method; 34 import java.lang.reflect.code.OpTransformer; 35 import java.lang.reflect.code.interpreter.Interpreter; 36 import java.lang.reflect.code.op.CoreOp; 37 import java.lang.runtime.CodeReflection; 38 import java.util.Optional; 39 import java.util.stream.Stream; 40 41 public class TestInvokeSuper { 42 43 interface I { 44 default String f() { return "I"; } 45 } 46 static class A { 47 String f() { return "A"; } 48 } 49 50 static class B extends A implements I { 51 final boolean invokeClass; 52 53 public B(boolean invokeClass) { 54 this.invokeClass = invokeClass; 55 } 56 57 @CodeReflection 58 public String f() { 59 return invokeClass ? super.f() : I.super.f(); 60 } 61 } 62 63 @Test 64 public void testInvokeSuper() { 65 CoreOp.FuncOp f = getFuncOp(B.class, "f"); 66 f = f.transform(OpTransformer.LOWERING_TRANSFORMER); 67 f.writeTo(System.out); 68 69 for (boolean invokeClass : new boolean[] {true, false}) { 70 B b = new B(invokeClass); 71 Assert.assertEquals(Interpreter.invoke(MethodHandles.lookup(), f, b), b.f()); 72 } 73 } 74 75 static CoreOp.FuncOp getFuncOp(Class<?> c, String name) { 76 Optional<Method> om = Stream.of(c.getDeclaredMethods()) 77 .filter(m -> m.getName().equals(name)) 78 .findFirst(); 79 80 Method m = om.get(); 81 return m.getCodeModel().get(); 82 } 83 }