1 /*

     2  * Copyright (c) 2009 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 import java.util.HashSet;

    24 import java.util.Set;

    25 

    26 import javax.annotation.processing.*;

    27 import javax.lang.model.SourceVersion;

    28 import javax.lang.model.element.*;

    29 import javax.lang.model.util.ElementFilter;

    30 

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

    32 import com.sun.source.util.TaskEvent;

    33 import com.sun.source.util.TaskListener;

    34 import com.sun.source.util.TreePath;

    35 import com.sun.tools.javac.main.JavaCompiler;

    36 import com.sun.tools.javac.main.JavaCompiler.CompileState;

    37 import com.sun.tools.javac.processing.JavacProcessingEnvironment;

    38 import com.sun.tools.javac.util.Context;

    39 

    40 /*

    41  * @test

    42  * @summary test that package annotations are available to type processors.

    43  * This class implements the functionality of a type processor, as previously

    44  * embodied by the AbstractTypeProcessor class.

    45  *

    46  * @author Mahmood Ali

    47  * @author Werner Dietl

    48  *

    49  * @compile PackageProcessor.java

    50  * @compile -cp . -processor PackageProcessor mypackage/Anno.java mypackage/MyClass.java mypackage/package-info.java

    51  */

    52 

    53 @SupportedAnnotationTypes("*")

    54 public class PackageProcessor extends AbstractProcessor {

    55 

    56     private final AttributionTaskListener listener = new AttributionTaskListener();

    57     private final Set<Name> elements = new HashSet<Name>();

    58 

    59     @Override

    60     public final void init(ProcessingEnvironment env) {

    61         super.init(env);

    62         JavacTask.instance(env).addTaskListener(listener);

    63         Context ctx = ((JavacProcessingEnvironment)processingEnv).getContext();

    64         JavaCompiler compiler = JavaCompiler.instance(ctx);

    65         compiler.shouldStopPolicyIfNoError = CompileState.max(compiler.shouldStopPolicyIfNoError,

    66                 CompileState.FLOW);

    67     }

    68 

    69     @Override

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

    71             RoundEnvironment roundEnv) {

    72         for (TypeElement elem : ElementFilter.typesIn(roundEnv.getRootElements())) {

    73             elements.add(elem.getQualifiedName());

    74         }

    75         return false;

    76     }

    77 

    78     @Override

    79     public SourceVersion getSupportedSourceVersion() {

    80         return SourceVersion.latest();

    81     }

    82 

    83     private final class AttributionTaskListener implements TaskListener {

    84         @Override

    85         public void started(TaskEvent e) { }

    86 

    87         @Override

    88         public void finished(TaskEvent e) {

    89             if (e.getKind() != TaskEvent.Kind.ANALYZE)

    90                 return;

    91 

    92             if (!elements.remove(e.getTypeElement().getQualifiedName()))

    93                 return;

    94 

    95             if (e.getTypeElement().getSimpleName().contentEquals("MyClass")) {

    96                 Element owner = e.getTypeElement().getEnclosingElement();

    97                 if (owner.getKind() != ElementKind.PACKAGE)

    98                     throw new RuntimeException("class owner should be a package: " + owner);

    99                 if (owner.getAnnotationMirrors().size() != 1)

   100                     throw new RuntimeException("the owner package should have one annotation: " + owner);

   101             }

   102         }

   103     }

   104 

   105 }