109 lines
4.1 KiB
Java
109 lines
4.1 KiB
Java
/*
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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 /java/lang/invoke/common
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* @build test.java.lang.invoke.lib.InstructionHelper
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* @enablePreview
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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 java.lang.classfile.ClassFile;
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import org.testng.annotations.BeforeClass;
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import org.testng.annotations.Test;
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import test.java.lang.invoke.lib.InstructionHelper;
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import java.lang.constant.*;
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import java.lang.invoke.MethodHandles;
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import java.lang.invoke.MethodType;
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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.descriptorString();
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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 = ClassFile.of().build(ClassDesc.of(genClassName), classBuilder -> classBuilder
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.withFlags(ClassFile.ACC_INTERFACE + ClassFile.ACC_ABSTRACT)
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.withSuperclass(ConstantDescs.CD_Object)
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.withInterfaceSymbols(InstructionHelper.classDesc(A.class))
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.withMethod("y", MethodTypeDesc.of(ConstantDescs.CD_String), ClassFile.ACC_PUBLIC, methodBuilder -> methodBuilder
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.withCode(codeBuilder -> codeBuilder
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.ldc(DynamicConstantDesc.ofNamed(
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MethodHandleDesc.of(
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DirectMethodHandleDesc.Kind.STATIC,
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ClassDesc.ofDescriptor(bsmClassName),
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bsmMethodName,
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bsmDescriptor
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),
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"String",
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ConstantDescs.CD_String
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)
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)
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.areturn()
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)
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)
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);
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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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}
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