114 lines
3.6 KiB
Java
114 lines
3.6 KiB
Java
/*
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* Copyright (c) 2023, 2024, 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 8302019
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* @summary Test basic operation of Elements.overrides
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* @library /tools/javac/lib
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* @build JavacTestingAbstractProcessor TestOverrides
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* @compile -processor TestOverrides -proc:only TestOverrides.java
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*/
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import java.util.*;
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import java.util.function.*;
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import javax.annotation.processing.*;
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import javax.lang.model.element.*;
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import javax.lang.model.util.*;
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/**
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* Test basic workings of Elements.overrides
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*/
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public class TestOverrides extends JavacTestingAbstractProcessor {
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public boolean process(Set<? extends TypeElement> annotations,
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RoundEnvironment roundEnv) {
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if (!roundEnv.processingOver()) {
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checkObjectOverrides();
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}
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return true;
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}
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private void checkObjectOverrides() {
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boolean elementSeen = false;
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TypeElement objectElt = elements.getTypeElement("java.lang.Object");
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TypeElement objectInterfaceElt = elements.getTypeElement("ObjectInterface");
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for (var method : ElementFilter.methodsIn(objectInterfaceElt.getEnclosedElements())) {
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elementSeen = true;
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Name methodName = method.getSimpleName();
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boolean expectedOverrideResult = method.getAnnotation(OverrideExpected.class).value();
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if (expectedOverrideResult !=
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elements.overrides(method, findMethod(methodName, objectElt), objectInterfaceElt ) ) {
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throw new RuntimeException("Unexpected overriding relation found for " + method);
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}
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if (!elementSeen) {
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throw new RuntimeException("No elements seen.");
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}
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}
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}
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ExecutableElement findMethod(Name name, TypeElement typeElt) {
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for (var method : ElementFilter.methodsIn(typeElt.getEnclosedElements())) {
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if (method.getSimpleName().equals(name)) {
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return method;
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}
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}
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return null;
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}
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}
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@interface OverrideExpected {
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boolean value() default true;
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}
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/**
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* Interface that has methods override-equivalent to methods of
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* java.lang.Object.
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*/
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interface ObjectInterface {
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@Override
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@OverrideExpected
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boolean equals(Object obj);
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@Override
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@OverrideExpected
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int hashCode();
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@Override
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@OverrideExpected
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String toString();
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@OverrideExpected(value=false) // protected, not public method
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Object clone();
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@OverrideExpected(value=false) // protected, not public method
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void finalize();
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// Final methods of Object (getClass, wait, notify[all]) rejected
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// if declared in an interface.
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}
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