/*

 * Copyright 2010 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

 * CA 95054 USA or visit www.sun.com if you need additional information or

 * have any questions.

 */

import java.io.*;

import javax.annotation.processing.*;

import javax.lang.model.*;

import javax.lang.model.element.*;

import javax.lang.model.type.*;

import javax.lang.model.util.*;

import java.util.*;

import com.sun.source.tree.*;

import com.sun.source.util.*;

import static javax.tools.Diagnostic.Kind.*;

/**

 * Using the tree API, retrieve element representations of anonymous

 * classes and verify their names are as specified.

 */

@SupportedAnnotationTypes("*")

public class TestAnonSourceNames extends AbstractProcessor {

   public boolean process(Set<? extends TypeElement> annotations,

                          RoundEnvironment roundEnv) {

       if (!roundEnv.processingOver()) {

           Trees trees = Trees.instance(processingEnv);

           for(Element rootElement : roundEnv.getRootElements()) {

               TreePath treePath = trees.getPath(rootElement);

               (new ClassTreeScanner(trees)).

                   scan(trees.getTree(rootElement),

                        treePath.getCompilationUnit());

           }

       }

       return true;

   }

   class ClassTreeScanner extends TreeScanner<Void, CompilationUnitTree> {

       private Trees trees;

       public ClassTreeScanner(Trees trees) {

           super();

           this.trees = trees;

       }

       @Override

       public Void visitClass(ClassTree node, CompilationUnitTree cu) {

                     Element element = trees.getElement(trees.getPath(cu, node));

           if (element == null) {

               processingEnv.getMessager().printMessage(ERROR,

                                                        "No element retreived for node named ''" +

                                                        node.getSimpleName() + "''.");

           } else {

               System.out.println("\nVisiting class ``" + element.getSimpleName() +

                                  "'' of kind " + element.getKind());

                         if (element instanceof TypeElement) {

                   TypeElement typeElement = (TypeElement) element;

                   String s = typeElement.getQualifiedName().toString();

                   System.out.println("\tqualified name:" + s);

               } else {

                   throw new RuntimeException("TypeElement not gotten from ClassTree.");

               }

           }

           return super.visitClass(node, cu);

       }

   }

   @Override

   public SourceVersion getSupportedSourceVersion() {

       return SourceVersion.latest();

   }

}