T6271787.java revision 45:7708bd6d800d 
1/*
2 * Copyright 2008 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 */
23
24/*
25 * @test
26 * @bug 6271787
27 * @summary javap dumps LocalVariableTypeTable attribute in hex, needs to print a table
28 */
29
30import java.io.*;
31
32public class T6271787 {
33    public static void main(String[] args) throws Exception {
34        new T6271787().run();
35    }
36
37    public void run() throws IOException {
38        File javaFile = writeTestFile();
39        File classFile = compileTestFile(javaFile);
40
41        verify(classFile,
42               "LocalVariableTypeTable:",
43               "0       5     0  this   LTest<TT;>;" // should consider decoding this in javap
44               );
45
46        if (errors > 0)
47            throw new Error(errors + " found.");
48    }
49
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    }
57
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    }
65
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    }
75
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    }
83
84    void error(String msg) {
85        System.err.println(msg);
86        errors++;
87    }
88
89    int errors;
90}
91