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         file.delete();

    80     }

    81 }