1 /*
   2  * Copyright (c) 2018, 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 8152616
  27  * @summary Unit test for corner case of PrettyPrinting when SourceOutput is false
  28  * @run compile --add-exports jdk.compiler/com.sun.tools.javac.tree=ALL-UNNAMED --add-exports jdk.compiler/com.sun.tools.javac.api=ALL-UNNAMED T8152616.java
  29  * @run main T8152616 
  30  */
  31 
  32 import java.io.File;
  33 import java.io.FileOutputStream;
  34 import java.io.OutputStream;
  35 import java.io.StringWriter;
  36 import javax.tools.StandardJavaFileManager;
  37 import javax.tools.DiagnosticListener;
  38 import com.sun.source.tree.CompilationUnitTree;
  39 import com.sun.source.util.JavacTask;
  40 import com.sun.tools.javac.api.JavacTool;
  41 import com.sun.tools.javac.tree.JCTree;
  42 import com.sun.tools.javac.tree.Pretty;
  43 import java.io.IOException;
  44 
  45 public class T8152616 {
  46 
  47     public String PrettyPrint(JCTree tree){
  48         StringWriter s = new StringWriter();
  49         try {
  50             new Pretty(s, false).printExpr(tree);
  51         }
  52         catch (IOException e) {
  53             throw new AssertionError(e);
  54         }
  55         return s.toString();
  56     }
  57 
  58     public static void main(String[] args) throws Exception {
  59         T8152616 obj = new T8152616();
  60         JavacTool javac = JavacTool.create();
  61         StandardJavaFileManager jfm = javac.getStandardFileManager(null,null,null);   
  62         File file = File.createTempFile("test", ".java");
  63         OutputStream outputStream = new FileOutputStream(file);
  64         outputStream.write("enum Foo {AA(10), BB, CC { void m() {} }; void m() {};}".getBytes());
  65         JavacTask task = javac.getTask(null, jfm, null, null, null,
  66                    jfm.getJavaFileObjects(file.getAbsolutePath()));
  67         Iterable<? extends CompilationUnitTree> trees = task.parse();
  68         CompilationUnitTree thisTree = trees.iterator().next();
  69         file.delete();
  70         outputStream = new FileOutputStream(file);
  71         outputStream.write((obj.PrettyPrint((JCTree)thisTree)).getBytes());
  72         task = javac.getTask(null, jfm, null, null, null,
  73                    jfm.getJavaFileObjects(file.getAbsolutePath()));
  74         if(task.parse().toString().contains("ERROR")){
  75              throw new AssertionError("parsing temp file failed with errors");
  76         }else{
  77              System.out.println("parsing successfull");
  78         }
  79         System.out.println(file.getAbsolutePath());  
  80         file.delete();
  81     }
  82 }