67 lines
1.9 KiB
Java
67 lines
1.9 KiB
Java
/*
|
|
* Copyright (c) 2020, 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.
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
/**
|
|
* @test
|
|
* @summary test for VarHandle signature polymorphic methods
|
|
* @run testng MethodReferenceTestVarHandle
|
|
*/
|
|
|
|
import java.lang.invoke.*;
|
|
import java.util.*;
|
|
|
|
import org.testng.annotations.Test;
|
|
import static org.testng.Assert.assertEquals;
|
|
|
|
@Test
|
|
public class MethodReferenceTestVarHandle {
|
|
|
|
interface Setter {
|
|
void apply(int[] arr, int idx, int val);
|
|
}
|
|
|
|
interface Getter {
|
|
int apply(int[] arr, int idx);
|
|
}
|
|
|
|
public void testSet() throws Throwable {
|
|
VarHandle vh = MethodHandles.arrayElementVarHandle(int[].class);
|
|
|
|
Setter f = vh::set;
|
|
|
|
int[] data = {0};
|
|
f.apply(data, 0, 42);
|
|
assertEquals(42, data[0]);
|
|
}
|
|
|
|
public void testGet() throws Throwable {
|
|
VarHandle vh = MethodHandles.arrayElementVarHandle(int[].class);
|
|
|
|
Getter f = vh::get;
|
|
|
|
int[] data = {42};
|
|
int v = f.apply(data, 0);
|
|
assertEquals(42, v);
|
|
}
|
|
}
|