author | psandoz |
Thu, 08 Mar 2018 14:33:57 -0800 | |
changeset 49380 | 74518f9ca4b4 |
parent 48965 | test/jdk/java/lang/invoke/condy/CondyReturnPrimitiveTest.java@be873d8c0114 |
child 49387 | 98e7a2c315a9 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2018, 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 8186046 |
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* @summary Test for an interface using condy with default overpass methods |
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* @library /lib/testlibrary/bytecode |
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* @build jdk.experimental.bytecode.BasicClassBuilder |
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* @run testng CondyInterfaceWithOverpassMethods |
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* @run testng/othervm -XX:+UnlockDiagnosticVMOptions -XX:UseBootstrapCallInfo=3 CondyInterfaceWithOverpassMethods |
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*/ |
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import jdk.experimental.bytecode.BasicClassBuilder; |
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import jdk.experimental.bytecode.Flag; |
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import jdk.experimental.bytecode.TypedCodeBuilder; |
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import org.testng.Assert; |
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import org.testng.annotations.BeforeClass; |
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import org.testng.annotations.Test; |
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import java.io.File; |
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import java.io.FileOutputStream; |
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import java.lang.invoke.MethodHandles; |
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import java.lang.invoke.MethodType; |
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import java.lang.reflect.Method; |
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import java.util.concurrent.atomic.AtomicInteger; |
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@Test |
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public class CondyInterfaceWithOverpassMethods { |
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interface A { |
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int a(); |
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default int x() { |
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return 1; |
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} |
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} |
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// Generated class with methods containing condy ldc |
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Class<?> gc; |
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public static Object bsm(MethodHandles.Lookup l, String name, Class<?> type) { |
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return name; |
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} |
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@BeforeClass |
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public void generateClass() throws Exception { |
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// interface B extends A { |
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// // Overpass for method A.a |
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// |
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// default void y() { |
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// // ldc to Dynamic |
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// } |
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// } |
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Class<?> thisClass = CondyInterfaceWithOverpassMethods.class; |
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String genClassName = thisClass.getSimpleName() + "$Code"; |
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String bsmClassName = thisClass.getCanonicalName().replace('.', '/'); |
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String bsmMethodName = "bsm"; |
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String bsmDescriptor = MethodType.methodType(Object.class, MethodHandles.Lookup.class, |
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String.class, Class.class).toMethodDescriptorString(); |
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byte[] byteArray = new BasicClassBuilder(genClassName, 55, 0) |
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.withFlags(Flag.ACC_INTERFACE, Flag.ACC_ABSTRACT) |
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.withSuperclass("java/lang/Object") |
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.withSuperinterface(thisClass.getCanonicalName().replace('.', '/') + "$" + A.class.getSimpleName()) |
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.withMethod("y", "()Ljava/lang/String;", M -> |
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M.withFlags(Flag.ACC_PUBLIC) |
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.withCode(TypedCodeBuilder::new, C -> |
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C.ldc("String", "Ljava/lang/String;", bsmClassName, bsmMethodName, bsmDescriptor, |
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S -> {}) |
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.areturn() |
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)) |
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.build(); |
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// For debugging purposes |
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new FileOutputStream(new File(genClassName + ".class")).write(byteArray); |
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gc = MethodHandles.lookup().defineClass(byteArray); |
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} |
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@Test |
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public void testClass() throws Exception { |
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// Trigger initialization |
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Class.forName(gc.getName()); |
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} |
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} |