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 /*

    25  * @test

    26  * @bug     8234025

    27  * @summary Elements.getPackageElement(ModuleElement,CharSequence) returns null for unnamed package

    28  * @modules jdk.compiler

    29  * @library /tools/lib /tools/javac/lib

    30  * @build toolbox.ModuleBuilder toolbox.ToolBox

    31  * @run main TestModuleUnnamedPackage

    32  */

    33 

    34 import java.io.IOException;

    35 import java.nio.file.Path;

    36 import java.util.List;

    37 import java.util.Set;

    38 

    39 import javax.annotation.processing.RoundEnvironment;

    40 import javax.lang.model.element.ModuleElement;

    41 import javax.lang.model.element.PackageElement;

    42 import javax.lang.model.element.TypeElement;

    43 import javax.lang.model.util.Elements;

    44 import javax.tools.JavaCompiler;

    45 import javax.tools.JavaFileObject;

    46 import javax.tools.StandardJavaFileManager;

    47 import javax.tools.StandardLocation;

    48 import javax.tools.ToolProvider;

    49 

    50 import com.sun.source.util.JavacTask;

    51 import toolbox.Assert;

    52 import toolbox.ToolBox;

    53 

    54 public class TestModuleUnnamedPackage extends JavacTestingAbstractProcessor {

    55     public static void main(String... args) throws IOException {

    56         TestModuleUnnamedPackage t = new TestModuleUnnamedPackage();

    57             t.run();

    58     }

    59 

    60     void run() throws IOException {

    61         ToolBox tb = new ToolBox();

    62         Path src = Path.of("src");

    63 

    64         tb.writeJavaFiles(src, "module m { exports p; }",

    65                 "package p; public class C { }");

    66 

    67         JavaCompiler c = ToolProvider.getSystemJavaCompiler();

    68         StandardJavaFileManager fm = c.getStandardFileManager(null, null, null);

    69         fm.setLocationFromPaths(StandardLocation.SOURCE_PATH, List.of(src));

    70         List<String> options = List.of("-proc:only");

    71         Iterable<? extends JavaFileObject> files = fm.getJavaFileObjects(tb.findJavaFiles(src));

    72         JavacTask t = (JavacTask) c.getTask(null, fm, null, null, null, files);

    73         t.setProcessors(List.of(this));

    74         t.call();

    75     }

    76 

    77     public boolean process(Set<? extends TypeElement> elems, RoundEnvironment rEnv) {

    78         if (rEnv.processingOver()) {

    79             Elements elements = processingEnv.getElementUtils();

    80             ModuleElement m = elements.getModuleElement("m");

    81             PackageElement unnamed = elements.getPackageElement(m, "");

    82             System.out.println("module m: " + m);

    83             System.out.println("module m, unnamed package: " + unnamed);

    84             Assert.checkNonNull(unnamed, "unnamed package in module m");

    85         }

    86         return true;

    87     }

    88 }

    89