1 /*
   2  * Copyright (c) 2008, 2015, 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 6622232
  27  * @summary javap gets whitespace confused
  28  * @modules jdk.compiler
  29  */
  30 
  31 import java.io.*;
  32 
  33 public class T6622232 {
  34     public static void main(String[] args) throws Exception {
  35         new T6622232().run();
  36     }
  37 
  38     public void run() throws IOException {
  39         File javaFile = writeTestFile();
  40         File classFile = compileTestFile(javaFile);
  41         String output = javap(classFile);
  42 
  43         // these are all examples of bad whitespace from old javap
  44         verifyNot(output,
  45                   "\\Q  Constant value: int 3Deprecated: true\\E",
  46                   "^Deprecated: true",
  47                   "\\Q   throws java.lang.Exception, java.lang.Error  Deprecated: true\\E"
  48                );
  49 
  50         if (errors > 0)
  51             throw new Error(errors + " found.");
  52     }
  53 
  54     File writeTestFile() throws IOException {
  55         File f = new File("Test.java");
  56         PrintWriter out = new PrintWriter(new BufferedWriter(new FileWriter(f)));
  57         out.println("class Test { ");
  58         out.println("    @Deprecated static final int f1 = 3;");
  59         out.println("    @Deprecated int f2;");
  60         out.println("    @Deprecated void m() throws Exception, Error { }");
  61         out.println("}");
  62         out.close();
  63         return f;
  64     }
  65 
  66     File compileTestFile(File f) {
  67         int rc = com.sun.tools.javac.Main.compile(new String[] { "-g", f.getPath() });
  68         if (rc != 0)
  69             throw new Error("compilation failed. rc=" + rc);
  70         String path = f.getPath();
  71         return new File(path.substring(0, path.length() - 5) + ".class");
  72     }
  73 
  74     String javap(File f) {
  75         StringWriter sw = new StringWriter();
  76         PrintWriter out = new PrintWriter(sw);
  77         int rc = com.sun.tools.javap.Main.run(new String[] { "-v", f.getPath() }, out);
  78         if (rc != 0)
  79             throw new Error("javap failed. rc=" + rc);
  80         out.close();
  81         System.out.println(sw.toString());
  82         return sw.toString();
  83     }
  84 
  85     void verifyNot(String output, String... unexpects) {
  86         for (String unexpect: unexpects) {
  87             if (output.matches(unexpect))
  88                 error(unexpect + " unexpectedly found");
  89         }
  90     }
  91 
  92     void error(String msg) {
  93         System.err.println(msg);
  94         errors++;
  95     }
  96 
  97     int errors;
  98 }