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/*
* Copyright (c) 2006, 2015, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
* @test
* @bug 6453386
* @summary Verify that example code in Elements.overrides works as spec'ed.
* @author Scott Seligman
* @library /tools/javac/lib
* @modules java.compiler
* jdk.compiler
* @build JavacTestingAbstractProcessor
* @compile -g OverridesSpecEx.java
* @compile -processor OverridesSpecEx -proc:only OverridesSpecEx.java
*/
import java.util.Set;
import javax.annotation.processing.*;
import javax.lang.model.SourceVersion;
import javax.lang.model.element.*;
import javax.lang.model.type.*;
import javax.lang.model.util.*;
import static javax.lang.model.util.ElementFilter.*;
public class OverridesSpecEx extends JavacTestingAbstractProcessor {
public boolean process(Set<? extends TypeElement> annoTypes,
RoundEnvironment round) {
if (!round.processingOver())
doit(annoTypes, round);
return true;
}
private void doit(Set<? extends TypeElement> annoTypes,
RoundEnvironment round) {
TypeElement string = elements.getTypeElement("java.lang.String");
TypeElement object = elements.getTypeElement("java.lang.Object");
ExecutableElement m1 = null;
ExecutableElement m2 = null;
for (ExecutableElement m : methodsIn(string.getEnclosedElements())) {
if (m.getSimpleName().contentEquals("hashCode")) {
m1 = m;
break;
}
}
for (ExecutableElement m : methodsIn(object.getEnclosedElements())) {
if (m.getSimpleName().contentEquals("hashCode")) {
m2 = m;
break;
}
}
boolean res =
elements.overrides(m1, m2, (TypeElement) m1.getEnclosingElement());
System.out.println("String.hashCode overrides Object.hashCode? " + res);
checkResult(res);
TypeElement a = elements.getTypeElement("OverridesSpecEx.A");
TypeElement b = elements.getTypeElement("OverridesSpecEx.B");
TypeElement c = elements.getTypeElement("OverridesSpecEx.C");
m1 = null;
m2 = null;
for (ExecutableElement m : methodsIn(a.getEnclosedElements()))
m1 = m;
for (ExecutableElement m : methodsIn(b.getEnclosedElements()))
m2 = m;
res = elements.overrides(m1, m2, a);
System.out.println("A.m overrides B.m in B? " + res);
checkResult(!res);
res = elements.overrides(m1, m2, c);
System.out.println("A.m overrides B.m in C? " + res);
checkResult(res);
}
private static void checkResult(boolean truthiness) {
if (!truthiness)
throw new AssertionError("Bogus result");
}
// Fodder for the processor
class A {
public void m() {}
}
interface B {
void m();
}
class C extends A implements B {
}
}
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