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 process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv)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 } 96