1 /*

     2  * Copyright (c) 2010, 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 import java.io.BufferedWriter;

    25 import java.io.File;

    26 import java.io.FileWriter;

    27 import java.io.IOException;

    28 import java.io.StringWriter;

    29 import java.util.Arrays;

    30 import java.util.Iterator;

    31 import java.util.List;

    32 

    33 import javax.lang.model.element.Element;

    34 import javax.tools.DiagnosticCollector;

    35 import javax.tools.JavaCompiler;

    36 import javax.tools.JavaFileObject;

    37 import javax.tools.StandardJavaFileManager;

    38 import javax.tools.ToolProvider;

    39 

    40 import com.sun.source.tree.CompilationUnitTree;

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

    42 

    43 /**

    44  * @test

    45  * @bug 6956638

    46  * @summary JavacTask.generate does not generate all required files

    47  */

    48 public class T6956638 {

    49     public static void main(String[] args) throws Exception {

    50         new T6956638().run();

    51     }

    52 

    53     void run() throws Exception {

    54         File srcDir = new File("src");

    55 

    56         File[] files = {

    57             writeFile(new File(srcDir, "T1.java"),

    58                 "public class T1 extends T2 {}\n"),

    59             writeFile(new File(srcDir, "T2.java"),

    60                 "public class T2 extends T3 {}\n"),

    61             writeFile(new File(srcDir, "T3.java"),

    62                 "public class T3 { public static final int C = 1; }\n"),

    63             writeFile(new File(srcDir, "Test.java"),

    64                 "public class Test { public static final int D = T1.C; }\n")

    65         };

    66 

    67         for (File f1: files) {

    68             for (File f2: files) {

    69                 if (f2 == f1) continue;

    70                 for (File f3: files) {

    71                     if (f3 == f2 || f3 == f1) continue;

    72                     for (File f4: files) {

    73                         if (f4 == f3 || f4 == f2 || f4 == f1) continue;

    74                         try {

    75                             test(f1, f2, f3, f4);

    76                         } catch (Exception e) {

    77                             error(e);

    78                         }

    79                     }

    80                 }

    81             }

    82         }

    83 

    84         if (errors > 0)

    85             throw new Exception(errors + " tests failed");

    86     }

    87 

    88     void test(File... sourceFiles) throws Exception {

    89         System.err.println("Test " + (++count) + ": " + Arrays.asList(sourceFiles));

    90 

    91         File classesDir = new File("classes" + count);

    92         classesDir.mkdirs();

    93 

    94         StringWriter compilerOutputStream = new StringWriter();

    95 

    96         List<String> compileOptions = Arrays.asList("-d", classesDir.getPath());

    97         JavaCompiler compiler = ToolProvider.getSystemJavaCompiler();

    98         DiagnosticCollector<JavaFileObject> diagnosticCollector = new DiagnosticCollector<JavaFileObject>();

    99         StandardJavaFileManager fileManager = compiler.getStandardFileManager(diagnosticCollector, null, null);

   100         Iterable<? extends JavaFileObject> sourceFileObjects = fileManager.getJavaFileObjects(sourceFiles);

   101         System.err.println("1- javac given java source JavaFileObjects " + sourceFileObjects);

   102         JavaCompiler.CompilationTask task = compiler.getTask(compilerOutputStream, fileManager, null, compileOptions, null, sourceFileObjects);

   103         JavacTask javacTask = (JavacTask) task;

   104 

   105         Iterable<? extends CompilationUnitTree> parsedTrees = javacTask.parse();

   106         Iterable<? extends Element> analyzedTrees = javacTask.analyze();

   107         Iterable<? extends JavaFileObject> generatedFiles = javacTask.generate();

   108 

   109         System.err.println("2- parsed:" + size(parsedTrees) + " analysed:" + size(analyzedTrees) + " generated:" + size(generatedFiles));

   110 

   111         System.err.print("3-");

   112         for (JavaFileObject f : generatedFiles)

   113             System.err.print(" " + f);

   114         System.err.println("");

   115 

   116         System.err.print("5-");

   117         for (File f : classesDir.listFiles())

   118             System.err.print(" " + f);

   119         System.err.println("");

   120 

   121         System.err.println("----");

   122         System.err.println(compilerOutputStream.toString());

   123 

   124         if (size(generatedFiles) != size(parsedTrees)) {

   125             throw new Exception("wrong number of files generated: " + size(generatedFiles)

   126                     + " expected: " + size(parsedTrees));

   127         }

   128     }

   129 

   130     private void error(Throwable t) {

   131         t.printStackTrace();

   132         errors++;

   133     }

   134 

   135     int count;

   136     int errors;

   137 

   138     private static <E> int size(Iterable<E> x) {

   139         int n = 0;

   140         for (Iterator<E> iter = x.iterator(); iter.hasNext(); ++n)

   141             iter.next();

   142         return n;

   143     }

   144 

   145     private static File writeFile(File f, String str) throws IOException {

   146         f.getParentFile().mkdirs();

   147         BufferedWriter fout = new BufferedWriter(new FileWriter(f));

   148         try {

   149             fout.write(str);

   150             fout.flush();

   151         } finally {

   152             fout.close();

   153         }

   154         return f;

   155     }

   156 }