/*

 * Copyright (c) 2006, 2017, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

/*

 * @test

 * @summary Test basic workings of PackageElement

 * @author  Joseph D. Darcy

 * @library /tools/javac/lib

 * @modules java.compiler

 *          jdk.compiler

 * @build   JavacTestingAbstractProcessor TestPackageElement

 * @compile -processor TestPackageElement -proc:only             TestPackageElement.java

 * @compile -processor TestPackageElement -proc:only --release 8 TestPackageElement.java

 */

import java.util.Objects;

import java.util.Set;

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.*;

/**

 * Test basic workings of PackageElement.

 */

public class TestPackageElement extends JavacTestingAbstractProcessor {

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

                           RoundEnvironment roundEnv) {

        if (!roundEnv.processingOver()) {

            PackageElement unnamedPkg = eltUtils.getPackageElement("");

            // The next line tests an implementation detail upon which

            // some diagnostics depend.

            if (!unnamedPkg.toString().equals("unnamed package"))

                throw new RuntimeException(

                                "toString on unnamed package: " + unnamedPkg);

            if (!unnamedPkg.isUnnamed())

                throw new RuntimeException("The isUnnamed method on the unnamed package returned false!");

            PackageElement javaLang = eltUtils.getPackageElement("java.lang");

            if (javaLang.isUnnamed())

                throw new RuntimeException("Package java.lang is unnamed!");

            testEnclosingElement(javaLang);

        }

        return true;

    }

    void testEnclosingElement(PackageElement javaLang) {

        SourceVersion version = processingEnv.getSourceVersion();

        Element enclosing = javaLang.getEnclosingElement();

        Element expectedEnclosing =

            (version.compareTo(RELEASE_9) < 0) ?  // No modules

            null :

            eltUtils.getModuleElement("java.base");

        if (!Objects.equals(enclosing, expectedEnclosing))

            throw new RuntimeException("Unexpected enclosing element under source version " +

                                       version);

    }

}