/*

 * 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.

 *

 */

/*

 * @test

 * @bug 6380018 6392177

 * @summary Test the ability to create and process package-info.java files

 * @author  Joseph D. Darcy

 * @compile TestPackageInfo.java

 * @compile -processor TestPackageInfo -proc:only foo/bar/package-info.java TestPackageInfo.java

 */

import java.util.Set;

import java.util.HashSet;

import java.util.Map;

import javax.annotation.processing.*;

import javax.lang.model.SourceVersion;

import static javax.lang.model.SourceVersion.*;

import javax.lang.model.element.*;

import javax.lang.model.util.*;

import static javax.lang.model.util.ElementFilter.*;

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

import static javax.tools.StandardLocation.*;

import java.io.*;

/**

 * Test the ability to process annotations on package-info.java files:

 * 1) Visibility of package-info files from the command line

 * 2) Visibility of generated package-info.java source files

 */

@SupportedAnnotationTypes("*")

public class TestPackageInfo extends AbstractProcessor {

    private Elements eltUtils;

    private Messager messager;

    private Filer filer;

    private Map<String,String> options;

    private int round = 0;

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

                           RoundEnvironment roundEnv) {

        round++;

        // Verify annotations are as expected

        Set<TypeElement> expectedAnnotations = new HashSet<TypeElement>();

        if (round == 1)

            expectedAnnotations.add(eltUtils.

                                    getTypeElement("javax.annotation.processing.SupportedAnnotationTypes"));

        expectedAnnotations.add(eltUtils.

                                getTypeElement("java.lang.SuppressWarnings"));

        if (!roundEnv.processingOver()) {

            System.out.println("\nRound " + round);

            int rootElementSize = roundEnv.getRootElements().size();

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

                System.out.printf("%nElement %s\tkind: %s%n", elt.getSimpleName(), elt.getKind());

                eltUtils.printElements(new PrintWriter(System.out), elt);

            }

            switch (round) {

            case 1:

                if (rootElementSize != 2)

                    throw new RuntimeException("Unexpected root element size " + rootElementSize);

                // Note that foo.bar.FuBar, an element of package

                // foo.bar, contains @Deprecated which should *not* be

                // included in the set of annotations to process

                if (!expectedAnnotations.equals(annotations)) {

                    throw new RuntimeException("Unexpected annotations: " + annotations);

                }

                try {

                    try {

                        filer.createClassFile("package-info");

                        throw new RuntimeException("Created class file for \"package-info\".");

                    } catch(FilerException fe) {}

                    PrintWriter pw = new PrintWriter(filer.createSourceFile("foo.package-info").openWriter());

                    pw.println("@SuppressWarnings(\"\")");

                    pw.println("package foo;");

                    pw.close();

                } catch(IOException ioe) {

                    throw new RuntimeException(ioe);

                }

                break;

            case 2:

                // Expect foo.package-info

                Set<Element> expectedElement = new HashSet<Element>();

                expectedElement.add(eltUtils.getPackageElement("foo"));

                if (!expectedElement.equals(roundEnv.getRootElements()))

                    throw new RuntimeException("Unexpected root element set " + roundEnv.getRootElements());

                if (!expectedAnnotations.equals(annotations)) {

                    throw new RuntimeException("Unexpected annotations: " + annotations);

                }

                break;

            default:

                throw new RuntimeException("Unexpected round number " + round);

            }

        }

        return false;

    }

    public SourceVersion getSupportedSourceVersion() {

        return SourceVersion.latest();

    }

    public void init(ProcessingEnvironment processingEnv) {

        super.init(processingEnv);

        eltUtils = processingEnv.getElementUtils();

        messager = processingEnv.getMessager();

        filer    = processingEnv.getFiler();

        options  = processingEnv.getOptions();

    }

}