1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/test/tools/javac/processing/model/util/OverridesSpecEx.java Wed Apr 27 01:34:52 2016 +0800
1.3 @@ -0,0 +1,110 @@
1.4 +/*
1.5 + * Copyright (c) 2006, 2010, Oracle and/or its affiliates. All rights reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation.
1.11 + *
1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.14 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.15 + * version 2 for more details (a copy is included in the LICENSE file that
1.16 + * accompanied this code).
1.17 + *
1.18 + * You should have received a copy of the GNU General Public License version
1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.21 + *
1.22 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.23 + * or visit www.oracle.com if you need additional information or have any
1.24 + * questions.
1.25 + */
1.26 +
1.27 +/*
1.28 + * @test
1.29 + * @bug 6453386
1.30 + * @summary Verify that example code in Elements.overrides works as spec'ed.
1.31 + * @author Scott Seligman
1.32 + * @library /tools/javac/lib
1.33 + * @build JavacTestingAbstractProcessor
1.34 + * @compile -g OverridesSpecEx.java
1.35 + * @compile -processor OverridesSpecEx -proc:only OverridesSpecEx.java
1.36 + */
1.37 +
1.38 +import java.util.Set;
1.39 +import javax.annotation.processing.*;
1.40 +import javax.lang.model.SourceVersion;
1.41 +import javax.lang.model.element.*;
1.42 +import javax.lang.model.type.*;
1.43 +import javax.lang.model.util.*;
1.44 +
1.45 +import static javax.lang.model.util.ElementFilter.*;
1.46 +
1.47 +public class OverridesSpecEx extends JavacTestingAbstractProcessor {
1.48 + public boolean process(Set<? extends TypeElement> annoTypes,
1.49 + RoundEnvironment round) {
1.50 + if (!round.processingOver())
1.51 + doit(annoTypes, round);
1.52 + return true;
1.53 + }
1.54 +
1.55 + private void doit(Set<? extends TypeElement> annoTypes,
1.56 + RoundEnvironment round) {
1.57 + TypeElement string = elements.getTypeElement("java.lang.String");
1.58 + TypeElement object = elements.getTypeElement("java.lang.Object");
1.59 +
1.60 + ExecutableElement m1 = null;
1.61 + ExecutableElement m2 = null;
1.62 + for (ExecutableElement m : methodsIn(string.getEnclosedElements())) {
1.63 + if (m.getSimpleName().contentEquals("hashCode")) {
1.64 + m1 = m;
1.65 + break;
1.66 + }
1.67 + }
1.68 + for (ExecutableElement m : methodsIn(object.getEnclosedElements())) {
1.69 + if (m.getSimpleName().contentEquals("hashCode")) {
1.70 + m2 = m;
1.71 + break;
1.72 + }
1.73 + }
1.74 +
1.75 + boolean res =
1.76 + elements.overrides(m1, m2, (TypeElement) m1.getEnclosingElement());
1.77 + System.out.println("String.hashCode overrides Object.hashCode? " + res);
1.78 + checkResult(res);
1.79 +
1.80 + TypeElement a = elements.getTypeElement("OverridesSpecEx.A");
1.81 + TypeElement b = elements.getTypeElement("OverridesSpecEx.B");
1.82 + TypeElement c = elements.getTypeElement("OverridesSpecEx.C");
1.83 +
1.84 + m1 = null;
1.85 + m2 = null;
1.86 + for (ExecutableElement m : methodsIn(a.getEnclosedElements()))
1.87 + m1 = m;
1.88 + for (ExecutableElement m : methodsIn(b.getEnclosedElements()))
1.89 + m2 = m;
1.90 +
1.91 + res = elements.overrides(m1, m2, a);
1.92 + System.out.println("A.m overrides B.m in B? " + res);
1.93 + checkResult(!res);
1.94 + res = elements.overrides(m1, m2, c);
1.95 + System.out.println("A.m overrides B.m in C? " + res);
1.96 + checkResult(res);
1.97 + }
1.98 +
1.99 + private static void checkResult(boolean truthiness) {
1.100 + if (!truthiness)
1.101 + throw new AssertionError("Bogus result");
1.102 + }
1.103 +
1.104 + // Fodder for the processor
1.105 + class A {
1.106 + public void m() {}
1.107 + }
1.108 + interface B {
1.109 + void m();
1.110 + }
1.111 + class C extends A implements B {
1.112 + }
1.113 +}
