jdk8-mips64-public/langtools: test/tools/javap/T6716452.java@4a48f3173534

     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 6716452

    26  * @summary need a method to get an index of an attribute

    27  */

    29 import java.io.*;

    30 import com.sun.tools.classfile.*;

    32 public class T6716452 {

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

    34         new T6716452().run();

    35     }

    37     public void run() throws Exception {

    38         File javaFile = writeTestFile();

    39         File classFile = compileTestFile(javaFile);

    41         ClassFile cf = ClassFile.read(classFile);

    42         for (Method m: cf.methods) {

    43             test(cf, m);

    44         }

    46         if (errors > 0)

    47             throw new Exception(errors + " errors found");

    48     }

    50     void test(ClassFile cf, Method m) {

    51         test(cf, m, Attribute.Code, Code_attribute.class);

    52         test(cf, m, Attribute.Exceptions, Exceptions_attribute.class);

    53     }

    55     // test the result of Attributes.getIndex according to expectations

    56     // encoded in the method's name

    57     void test(ClassFile cf, Method m, String name, Class<?> c) {

    58         int index = m.attributes.getIndex(cf.constant_pool, name);

    59         try {

    60             String m_name = m.getName(cf.constant_pool);

    61             System.err.println("Method " + m_name + " name:" + name + " index:" + index + " class: " + c);

    62             boolean expect = (m_name.equals("<init>") && name.equals("Code"))

    63                 || (m_name.indexOf(name) != -1);

    64             boolean found = (index != -1);

    65             if (expect) {

    66                 if (found) {

    67                     Attribute attr = m.attributes.get(index);

    68                     if (!c.isAssignableFrom(attr.getClass())) {

    69                         error(m + ": unexpected attribute found,"

    70                               + " expected " + c.getName()

    71                               + " found " + attr.getClass().getName());

    72                     }

    73                 } else {

    74                     error(m + ": expected attribute " + name + " not found");

    75                 }

    76             } else {

    77                 if (found) {

    78                     error(m + ": unexpected attribute " + name);

    79                 }

    80             }

    81         } catch (ConstantPoolException e) {

    82             error(m + ": " + e);

    83         }

    84     }

    86     File writeTestFile() throws IOException {

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

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

    89         out.println("abstract class Test { ");

    90         out.println("  abstract void m();");

    91         out.println("  void m_Code() { }");

    92         out.println("  abstract void m_Exceptions() throws Exception;");

    93         out.println("  void m_Code_Exceptions() throws Exception { }");

    94         out.println("}");

    95         out.close();

    96         return f;

    97     }

    99     File compileTestFile(File f) {

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

   101         if (rc != 0)

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

   103         String path = f.getPath();

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

   105     }

   107     void error(String msg) {

   108         System.err.println("error: " + msg);

   109         errors++;

   110     }

   112     int errors;

   113 }

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