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/*
* Copyright (c) 2012, 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
* @bug 7196190
* @summary Improve method of handling MethodHandles
*
* @run main/othervm ClassForNameTest
*/
import java.lang.invoke.*;
import java.lang.reflect.Method;
import java.util.Arrays;
public class ClassForNameTest {
static final String NAME = ClassForNameTest.class.getName();
public static void main(String[] args) throws Throwable {
{
final MethodType mt = MethodType.methodType(Class.class, String.class);
final MethodHandle mh = MethodHandles.lookup()
.findStatic(Class.class, "forName", mt);
Class.forName(NAME);
mh.invoke(NAME);
mh.bindTo(NAME).invoke();
mh.invokeWithArguments(Arrays.asList(NAME));
mh.invokeWithArguments(NAME);
Class cls = (Class) mh.invokeExact(NAME);
}
{
final Method fnMethod = Class.class.getMethod("forName", String.class);
final MethodType mt = MethodType.methodType(Object.class, Object.class, Object[].class);
final MethodHandle mh = MethodHandles.lookup()
.findVirtual(Method.class, "invoke", mt)
.bindTo(fnMethod);
fnMethod.invoke(null, NAME);
mh.bindTo(null).bindTo(new Object[]{NAME}).invoke();
mh.invoke(null, new Object[]{NAME});
mh.invokeWithArguments(null, new Object[]{NAME});
mh.invokeWithArguments(Arrays.asList(null, new Object[]{NAME}));
Object obj = mh.invokeExact((Object) null, new Object[]{NAME});
}
{
final Method fnMethod = Class.class.getMethod("forName", String.class);
final MethodType mt = MethodType.methodType(Object.class, Object.class, Object[].class);
final MethodHandle mh = MethodHandles.lookup()
.bind(fnMethod, "invoke", mt);
mh.bindTo(null).bindTo(new Object[]{NAME}).invoke();
mh.invoke(null, new Object[]{NAME});
mh.invokeWithArguments(null, NAME);
mh.invokeWithArguments(Arrays.asList(null, NAME));
Object obj = mh.invokeExact((Object) null, new Object[]{NAME});
}
{
final Method fnMethod = Class.class.getMethod("forName", String.class);
final MethodHandle mh = MethodHandles.lookup().unreflect(fnMethod);
mh.bindTo(NAME).invoke();
mh.invoke(NAME);
mh.invokeWithArguments(NAME);
mh.invokeWithArguments(Arrays.asList(NAME));
Class cls = (Class) mh.invokeExact(NAME);
}
System.out.println("TEST PASSED");
}
}
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