1 /*

     2  * Copyright (c) 2018, Google LLC. 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 8204630

    27  * @summary generating an anonymous class with Filer#createClassFile causes an NPE in

    28  * JavacProcessingEnvironment

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

    30  * @modules jdk.compiler/com.sun.tools.javac.api

    31  *          jdk.compiler/com.sun.tools.javac.main

    32  *          jdk.compiler/com.sun.tools.javac.processing

    33  *          jdk.compiler/com.sun.tools.javac.util

    34  *          jdk.jdeps/com.sun.tools.javap

    35  * @clean *

    36  * @build toolbox.ToolBox toolbox.JavacTask

    37  * @build GenerateAnonymousClass JavacTestingAbstractProcessor

    38  * @compile/ref=GenerateAnonymousClass.out -XDaccessInternalAPI -processor GenerateAnonymousClass -XDrawDiagnostics GenerateAnonymousClass.java

    39  */

    40 

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

    42 import com.sun.tools.javac.processing.PrintingProcessor.PrintingElementVisitor;

    43 import com.sun.tools.javac.util.Log;

    44 import com.sun.tools.javac.util.Log.WriterKind;

    45 import java.io.*;

    46 import java.util.*;

    47 import javax.annotation.processing.*;

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

    49 import javax.tools.*;

    50 import toolbox.JavacTask;

    51 import toolbox.ToolBox;

    52 

    53 public class GenerateAnonymousClass extends JavacTestingAbstractProcessor {

    54     int round = 1;

    55 

    56     @Override

    57     public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {

    58         Log log = Log.instance(((JavacProcessingEnvironment) processingEnv).getContext());

    59         PrintWriter pw = log.getWriter(WriterKind.NOTICE);

    60 

    61         pw.println("round: " + round);

    62 

    63         TypeElement generatedClass = processingEnv.getElementUtils().getTypeElement("T");

    64         if (generatedClass != null) {

    65             new PrintingElementVisitor(pw, processingEnv.getElementUtils()).visit(generatedClass);

    66             pw.flush();

    67         }

    68 

    69         if (round++ == 1) {

    70             ToolBox tb = new ToolBox();

    71             ToolBox.MemoryFileManager mfm = new ToolBox.MemoryFileManager();

    72             new JavacTask(tb).fileManager(mfm).sources(GENERATED).run();

    73 

    74             try (OutputStream out = filer.createClassFile("T").openOutputStream()) {

    75                 out.write(mfm.getFileBytes(StandardLocation.CLASS_OUTPUT, "T"));

    76             } catch (IOException e) {

    77                 processingEnv.getMessager().printMessage(Diagnostic.Kind.ERROR, e.toString());

    78             }

    79             try (OutputStream out = filer.createClassFile("T$1").openOutputStream()) {

    80                 out.write(mfm.getFileBytes(StandardLocation.CLASS_OUTPUT, "T$1"));

    81             } catch (IOException e) {

    82                 processingEnv.getMessager().printMessage(Diagnostic.Kind.ERROR, e.toString());

    83             }

    84         }

    85 

    86         return false;

    87     }

    88 

    89     private static final String GENERATED =

    90             "public class T {\n"

    91                     + "    public void test() {\n"

    92                     + "        new Object() {};\n"

    93                     + "    }\n"

    94                     + "}";

    95 }