aoqi@0: /*
aoqi@0:  * Copyright (c) 2006, 2010, Oracle and/or its affiliates. All rights reserved.
aoqi@0:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0:  *
aoqi@0:  * This code is free software; you can redistribute it and/or modify it
aoqi@0:  * under the terms of the GNU General Public License version 2 only, as
aoqi@0:  * published by the Free Software Foundation.
aoqi@0:  *
aoqi@0:  * This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
aoqi@0:  * version 2 for more details (a copy is included in the LICENSE file that
aoqi@0:  * accompanied this code).
aoqi@0:  *
aoqi@0:  * You should have received a copy of the GNU General Public License version
aoqi@0:  * 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0:  *
aoqi@0:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0:  * or visit www.oracle.com if you need additional information or have any
aoqi@0:  * questions.
aoqi@0:  */
aoqi@0: 
aoqi@0: /*
aoqi@0:  * @test
aoqi@0:  * @bug     6453386
aoqi@0:  * @summary Verify that example code in Elements.overrides works as spec'ed.
aoqi@0:  * @author  Scott Seligman
aoqi@0:  * @library /tools/javac/lib
aoqi@0:  * @build JavacTestingAbstractProcessor
aoqi@0:  * @compile -g OverridesSpecEx.java
aoqi@0:  * @compile -processor OverridesSpecEx -proc:only OverridesSpecEx.java
aoqi@0:  */
aoqi@0: 
aoqi@0: import java.util.Set;
aoqi@0: import javax.annotation.processing.*;
aoqi@0: import javax.lang.model.SourceVersion;
aoqi@0: import javax.lang.model.element.*;
aoqi@0: import javax.lang.model.type.*;
aoqi@0: import javax.lang.model.util.*;
aoqi@0: 
aoqi@0: import static javax.lang.model.util.ElementFilter.*;
aoqi@0: 
aoqi@0: public class OverridesSpecEx extends JavacTestingAbstractProcessor {
aoqi@0:     public boolean process(Set<? extends TypeElement> annoTypes,
aoqi@0:                            RoundEnvironment round) {
aoqi@0:         if (!round.processingOver())
aoqi@0:             doit(annoTypes, round);
aoqi@0:         return true;
aoqi@0:     }
aoqi@0: 
aoqi@0:     private void doit(Set<? extends TypeElement> annoTypes,
aoqi@0:                       RoundEnvironment round) {
aoqi@0:         TypeElement string = elements.getTypeElement("java.lang.String");
aoqi@0:         TypeElement object = elements.getTypeElement("java.lang.Object");
aoqi@0: 
aoqi@0:         ExecutableElement m1 = null;
aoqi@0:         ExecutableElement m2 = null;
aoqi@0:         for (ExecutableElement m : methodsIn(string.getEnclosedElements())) {
aoqi@0:             if (m.getSimpleName().contentEquals("hashCode")) {
aoqi@0:                 m1 = m;
aoqi@0:                 break;
aoqi@0:             }
aoqi@0:         }
aoqi@0:         for (ExecutableElement m : methodsIn(object.getEnclosedElements())) {
aoqi@0:             if (m.getSimpleName().contentEquals("hashCode")) {
aoqi@0:                 m2 = m;
aoqi@0:                 break;
aoqi@0:             }
aoqi@0:         }
aoqi@0: 
aoqi@0:         boolean res =
aoqi@0:             elements.overrides(m1, m2, (TypeElement) m1.getEnclosingElement());
aoqi@0:         System.out.println("String.hashCode overrides Object.hashCode?  " + res);
aoqi@0:         checkResult(res);
aoqi@0: 
aoqi@0:         TypeElement a = elements.getTypeElement("OverridesSpecEx.A");
aoqi@0:         TypeElement b = elements.getTypeElement("OverridesSpecEx.B");
aoqi@0:         TypeElement c = elements.getTypeElement("OverridesSpecEx.C");
aoqi@0: 
aoqi@0:         m1 = null;
aoqi@0:         m2 = null;
aoqi@0:         for (ExecutableElement m : methodsIn(a.getEnclosedElements()))
aoqi@0:             m1 = m;
aoqi@0:         for (ExecutableElement m : methodsIn(b.getEnclosedElements()))
aoqi@0:             m2 = m;
aoqi@0: 
aoqi@0:         res = elements.overrides(m1, m2, a);
aoqi@0:         System.out.println("A.m overrides B.m in B?  " + res);
aoqi@0:         checkResult(!res);
aoqi@0:         res = elements.overrides(m1, m2, c);
aoqi@0:         System.out.println("A.m overrides B.m in C?  " + res);
aoqi@0:         checkResult(res);
aoqi@0:     }
aoqi@0: 
aoqi@0:     private static void checkResult(boolean truthiness) {
aoqi@0:         if (!truthiness)
aoqi@0:             throw new AssertionError("Bogus result");
aoqi@0:     }
aoqi@0: 
aoqi@0:     // Fodder for the processor
aoqi@0:     class A {
aoqi@0:         public void m() {}
aoqi@0:     }
aoqi@0:     interface B {
aoqi@0:         void m();
aoqi@0:     }
aoqi@0:     class C extends A implements B {
aoqi@0:     }
aoqi@0: }