111 lines
3.8 KiB
Java
111 lines
3.8 KiB
Java
/*
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* Copyright (c) 2006, 2010, 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 6453386
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* @summary Verify that example code in Elements.overrides works as spec'ed.
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* @author Scott Seligman
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* @library /tools/javac/lib
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* @build JavacTestingAbstractProcessor
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* @compile -g OverridesSpecEx.java
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* @compile -processor OverridesSpecEx -proc:only OverridesSpecEx.java
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*/
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import java.util.Set;
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import javax.annotation.processing.*;
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import javax.lang.model.SourceVersion;
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import javax.lang.model.element.*;
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import javax.lang.model.type.*;
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import javax.lang.model.util.*;
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import static javax.lang.model.util.ElementFilter.*;
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public class OverridesSpecEx extends JavacTestingAbstractProcessor {
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public boolean process(Set<? extends TypeElement> annoTypes,
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RoundEnvironment round) {
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if (!round.processingOver())
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doit(annoTypes, round);
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return true;
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}
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private void doit(Set<? extends TypeElement> annoTypes,
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RoundEnvironment round) {
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TypeElement string = elements.getTypeElement("java.lang.String");
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TypeElement object = elements.getTypeElement("java.lang.Object");
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ExecutableElement m1 = null;
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ExecutableElement m2 = null;
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for (ExecutableElement m : methodsIn(string.getEnclosedElements())) {
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if (m.getSimpleName().contentEquals("hashCode")) {
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m1 = m;
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break;
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}
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}
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for (ExecutableElement m : methodsIn(object.getEnclosedElements())) {
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if (m.getSimpleName().contentEquals("hashCode")) {
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m2 = m;
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break;
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}
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}
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boolean res =
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elements.overrides(m1, m2, (TypeElement) m1.getEnclosingElement());
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System.out.println("String.hashCode overrides Object.hashCode? " + res);
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checkResult(res);
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TypeElement a = elements.getTypeElement("OverridesSpecEx.A");
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TypeElement b = elements.getTypeElement("OverridesSpecEx.B");
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TypeElement c = elements.getTypeElement("OverridesSpecEx.C");
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m1 = null;
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m2 = null;
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for (ExecutableElement m : methodsIn(a.getEnclosedElements()))
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m1 = m;
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for (ExecutableElement m : methodsIn(b.getEnclosedElements()))
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m2 = m;
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res = elements.overrides(m1, m2, a);
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System.out.println("A.m overrides B.m in B? " + res);
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checkResult(!res);
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res = elements.overrides(m1, m2, c);
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System.out.println("A.m overrides B.m in C? " + res);
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checkResult(res);
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}
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private static void checkResult(boolean truthiness) {
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if (!truthiness)
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throw new AssertionError("Bogus result");
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}
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// Fodder for the processor
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class A {
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public void m() {}
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}
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interface B {
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void m();
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}
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class C extends A implements B {
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}
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}
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