85 lines
3.2 KiB
Java
85 lines
3.2 KiB
Java
/*
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* Copyright (c) 2021, Google LLC. 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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import java.lang.reflect.Field;
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import java.util.Arrays;
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import java.util.Optional;
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/**
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* @test
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* @bug 8271623
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*
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* @compile --release 17 DontOptimizeOuterThis.java InnerClasses.java
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* @run main DontOptimizeOuterThis
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*/
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public class DontOptimizeOuterThis extends InnerClasses {
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public static void main(String[] args) {
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new DontOptimizeOuterThis().test();
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}
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public void test() {
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checkInner(localCapturesParameter(0), true);
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checkInner(localCapturesLocal(), true);
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checkInner(localCapturesEnclosing(), true);
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checkInner(anonCapturesParameter(0), true);
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checkInner(anonCapturesLocal(), true);
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checkInner(anonCapturesEnclosing(), true);
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checkInner(StaticMemberClass.class, false); // static
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checkInner(NonStaticMemberClass.class, true);
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checkInner(NonStaticMemberClassCapturesEnclosing.class, true);
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checkInner(N0.class, false); // static
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checkInner(N0.N1.class, true);
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checkInner(N0.N1.N2.class, true);
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checkInner(N0.N1.N2.N3.class, true);
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checkInner(N0.N1.N2.N3.N4.class, true);
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checkInner(N0.N1.N2.N3.N4.N5.class, true);
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checkInner(SerializableCapture.class, true);
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checkInner(SerializableWithSerialVersionUID.class, true);
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checkInner(SerializableWithInvalidSerialVersionUIDType.class, true);
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checkInner(SerializableWithInvalidSerialVersionUIDNonFinal.class, true);
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checkInner(SerializableWithInvalidSerialVersionUIDNonStatic.class, true);
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}
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private static void checkInner(Class<?> clazz, boolean expectOuterThis) {
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Optional<Field> outerThis = Arrays.stream(clazz.getDeclaredFields())
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.filter(f -> f.getName().startsWith("this$")).findFirst();
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if (expectOuterThis) {
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if (outerThis.isEmpty()) {
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throw new AssertionError(
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String.format(
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"expected %s to have an enclosing instance", clazz.getName()));
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}
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} else {
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if (outerThis.isPresent()) {
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throw new AssertionError(
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String.format("%s had an unexpected enclosing instance", clazz.getName()));
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}
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}
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}
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}
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