/*

 * Copyright 2004-2007 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 com.sun.mirror.apt.*;

import com.sun.mirror.declaration.*;

import com.sun.mirror.type.*;

import com.sun.mirror.util.*;

import java.util.Collection;

import java.util.Set;

import java.util.Arrays;

import static java.util.Collections.*;

import static com.sun.mirror.util.DeclarationVisitors.*;

/*

 * Indirect test of whether source or class files are used to provide

 * declaration information.

 */

public class FreshnessApf implements AnnotationProcessorFactory {

    // Process any set of annotations

    private static final Collection<String> supportedAnnotations

        = unmodifiableCollection(Arrays.asList("*"));

    // No supported options

    private static final Collection<String> supportedOptions = emptySet();

    public Collection<String> supportedAnnotationTypes() {

        return supportedAnnotations;

    }

    public Collection<String> supportedOptions() {

        return supportedOptions;

    }

    public AnnotationProcessor getProcessorFor(

            Set<AnnotationTypeDeclaration> atds,

            AnnotationProcessorEnvironment env) {

        return new FreshnessAp(env);

    }

    private static class FreshnessAp implements AnnotationProcessor {

        private final AnnotationProcessorEnvironment env;

        FreshnessAp(AnnotationProcessorEnvironment env) {

            this.env = env;

        }

        public void process() {

            System.out.println("Testing for freshness.");

            boolean empty = true;

            for (TypeDeclaration typeDecl : env.getSpecifiedTypeDeclarations()) {

                for (FieldDeclaration fieldDecl: typeDecl.getFields() ) {

                    empty = false;

                    System.out.println(typeDecl.getQualifiedName() +

                                       "." + fieldDecl.getSimpleName());

                    // Verify the declaration for the type of the

                    // field is a class with an annotation.

                    System.out.println(((DeclaredType) fieldDecl.getType()).getDeclaration().getAnnotationMirrors());

                    if (((DeclaredType) fieldDecl.getType()).getDeclaration().getAnnotationMirrors().size() == 0)

                        env.getMessager().printError("Expected an annotation.");

                }

            }

            if (empty)

                env.getMessager().printError("No fields encountered.");

        }

    }

}