jdk8-mips64-public/langtools: test/tools/javap/T6271787.java@20230f8b0eef

     1 /*

     2  * Copyright (c) 2008, 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  */

    24 /*

    25  * @test

    26  * @bug 6271787

    27  * @summary javap dumps LocalVariableTypeTable attribute in hex, needs to print a table

    28  */

    30 import java.io.*;

    32 public class T6271787 {

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

    34         new T6271787().run();

    35     }

    37     public void run() throws IOException {

    38         File javaFile = writeTestFile();

    39         File classFile = compileTestFile(javaFile);

    41         verify(classFile,

    42                "LocalVariableTypeTable:",

    43                "0       5     0  this   LTest<TT;>;" // should consider decoding this in javap

    44                );

    46         if (errors > 0)

    47             throw new Error(errors + " found.");

    48     }

    50     File writeTestFile() throws IOException {

    51         File f = new File("Test.java");

    52         PrintWriter out = new PrintWriter(new BufferedWriter(new FileWriter(f)));

    53         out.println("class Test<T> { }");

    54         out.close();

    55         return f;

    56     }

    58     File compileTestFile(File f) {

    59         int rc = com.sun.tools.javac.Main.compile(new String[] { "-g", f.getPath() });

    60         if (rc != 0)

    61             throw new Error("compilation failed. rc=" + rc);

    62         String path = f.getPath();

    63         return new File(path.substring(0, path.length() - 5) + ".class");

    64     }

    66     String javap(File f) {

    67         StringWriter sw = new StringWriter();

    68         PrintWriter out = new PrintWriter(sw);

    69         int rc = com.sun.tools.javap.Main.run(new String[] { "-v", f.getPath() }, out);

    70         if (rc != 0)

    71             throw new Error("javap failed. rc=" + rc);

    72         out.close();

    73         return sw.toString();

    74     }

    76     void verify(File classFile, String... expects) {

    77         String output = javap(classFile);

    78         for (String expect: expects) {

    79             if (output.indexOf(expect)< 0)

    80                 error(expect + " not found");

    81         }

    82     }

    84     void error(String msg) {

    85         System.err.println(msg);

    86         errors++;

    87     }

    89     int errors;

    90 }

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