98 lines
3.6 KiB
Java
98 lines
3.6 KiB
Java
/*
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* Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/**
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* @test
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* @bug 7196190
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* @summary Improve method of handling MethodHandles
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*
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* @run main/othervm ClassForNameTest
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*/
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import java.lang.invoke.*;
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import java.lang.reflect.Method;
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import java.util.Arrays;
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public class ClassForNameTest {
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static final String NAME = ClassForNameTest.class.getName();
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public static void main(String[] args) throws Throwable {
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{
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final MethodType mt = MethodType.methodType(Class.class, String.class);
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final MethodHandle mh = MethodHandles.lookup()
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.findStatic(Class.class, "forName", mt);
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Class.forName(NAME);
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mh.invoke(NAME);
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mh.bindTo(NAME).invoke();
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mh.invokeWithArguments(Arrays.asList(NAME));
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mh.invokeWithArguments(NAME);
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Class cls = (Class) mh.invokeExact(NAME);
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}
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{
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final Method fnMethod = Class.class.getMethod("forName", String.class);
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final MethodType mt = MethodType.methodType(Object.class, Object.class, Object[].class);
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final MethodHandle mh = MethodHandles.lookup()
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.findVirtual(Method.class, "invoke", mt)
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.bindTo(fnMethod);
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fnMethod.invoke(null, NAME);
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mh.bindTo(null).bindTo(new Object[]{NAME}).invoke();
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mh.invoke(null, new Object[]{NAME});
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mh.invokeWithArguments(null, new Object[]{NAME});
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mh.invokeWithArguments(Arrays.asList(null, new Object[]{NAME}));
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Object obj = mh.invokeExact((Object) null, new Object[]{NAME});
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}
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{
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final Method fnMethod = Class.class.getMethod("forName", String.class);
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final MethodType mt = MethodType.methodType(Object.class, Object.class, Object[].class);
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final MethodHandle mh = MethodHandles.lookup()
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.bind(fnMethod, "invoke", mt);
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mh.bindTo(null).bindTo(new Object[]{NAME}).invoke();
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mh.invoke(null, new Object[]{NAME});
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mh.invokeWithArguments(null, NAME);
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mh.invokeWithArguments(Arrays.asList(null, NAME));
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Object obj = mh.invokeExact((Object) null, new Object[]{NAME});
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}
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{
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final Method fnMethod = Class.class.getMethod("forName", String.class);
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final MethodHandle mh = MethodHandles.lookup().unreflect(fnMethod);
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mh.bindTo(NAME).invoke();
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mh.invoke(NAME);
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mh.invokeWithArguments(NAME);
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mh.invokeWithArguments(Arrays.asList(NAME));
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Class cls = (Class) mh.invokeExact(NAME);
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}
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System.out.println("TEST PASSED");
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}
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}
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