1 /*
   2  * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 import javax.annotation.processing.*;
  25 import javax.lang.model.SourceVersion;
  26 import javax.lang.model.element.*;
  27 import javax.lang.model.util.Elements;
  28 import java.util.ArrayList;
  29 import java.util.Collections;
  30 import java.util.List;
  31 import java.util.Set;
  32 
  33 @SupportedAnnotationTypes("*")
  34 public final class ListMembersAP extends AbstractProcessor {
  35 
  36     @Override
  37     public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {
  38         if (!roundEnv.processingOver())
  39             return false;
  40 
  41         Elements elements = processingEnv.getElementUtils();
  42         TypeElement test = elements.getTypeElement("test.Test");
  43         List<? extends Element> members = new ArrayList<>(test.getEnclosedElements());
  44 
  45         Collections.sort(members,
  46             (e1, e2) -> e1.getSimpleName().toString().compareTo(e2.getSimpleName().toString()));
  47 
  48         for (Element el : members) {
  49             System.out.println(el.getSimpleName() + ":" + elements.getOrigin(el));
  50         }
  51 
  52         return false;
  53     }
  54 
  55     @Override
  56     public SourceVersion getSupportedSourceVersion() {
  57         return SourceVersion.latestSupported();
  58     }
  59 
  60 }