1 /*
  2  * Copyright (c) 2016, 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 8161013
 27  * @summary Verify that anonymous class binaries have the correct flags set
 28  * @modules jdk.jdeps/com.sun.tools.classfile
 29  * @run main AnonymousClassFlags
 30  */
 31 
 32 import java.util.*;
 33 import java.nio.file.Path;
 34 import java.nio.file.Paths;
 35 
 36 import com.sun.tools.classfile.*;
 37 import static com.sun.tools.classfile.AccessFlags.*;
 38 
 39 public class AnonymousClassFlags {
 40     public static void main(String[] args) throws Exception {
 41         new AnonymousClassFlags().test(System.getProperty("test.classes", "."));
 42     }
 43 
 44     /** Maps names of anonymous classes to their expected inner_class_access_flags */
 45     private static Map<String, Integer> anonClasses = new LinkedHashMap<>();
 46 
 47     // ******* TEST CASES ********
 48 
 49     static Object o1 = new Object() {
 50         { anonClasses.put(getClass().getName(), 0); }
 51     };
 52 
 53     static void staticMethod() {
 54         Object o2 = new Object() {
 55             { anonClasses.put(getClass().getName(), 0); }
 56         };
 57     }
 58 
 59     static {
 60         staticMethod();
 61 
 62         Object o3 = new Object() {
 63             { anonClasses.put(getClass().getName(), 0); }
 64         };
 65     }
 66 
 67     Object o4 = new Object() {
 68         { anonClasses.put(getClass().getName(), 0); }
 69     };
 70 
 71     void instanceMethod() {
 72         Object o5 = new Object() {
 73             { anonClasses.put(getClass().getName(), 0); }
 74         };
 75     }
 76 
 77     {
 78         instanceMethod();
 79 
 80         Object o6 = new Object() {
 81             { anonClasses.put(getClass().getName(), 0); }
 82         };
 83     }
 84 
 85     // ******* TEST IMPLEMENTATION ********
 86 
 87     void test(String classesDir) throws Exception {
 88         staticMethod();
 89         instanceMethod();
 90 
 91         Path outerFile = Paths.get(classesDir, getClass().getName() + ".class");
 92         ClassFile outerClass = ClassFile.read(outerFile);
 93         for (Map.Entry<String,Integer> entry : anonClasses.entrySet()) {
 94             Path innerFile = Paths.get(classesDir, entry.getKey() + ".class");
 95             ClassFile innerClass = ClassFile.read(innerFile);
 96             String name = entry.getKey();
 97             int expected = entry.getValue();
 98             assertInnerFlags(outerClass, name, expected);
 99             assertClassFlags(innerClass, name, expected);
100             assertInnerFlags(innerClass, name, expected);
101         }
102     }
103 
104     static void assertClassFlags(ClassFile classFile, String name, int expected) {
105         int mask = ACC_PUBLIC | ACC_FINAL | ACC_INTERFACE | ACC_ABSTRACT |
106                    ACC_SYNTHETIC | ACC_ANNOTATION | ACC_ENUM;
107         int classExpected = (expected & mask) | ACC_SUPER;
108         int classActual = classFile.access_flags.flags;
109         if (classActual != classExpected) {
110             throw new AssertionError("Incorrect access_flags for class " + name +
111                                      ": expected=" + classExpected + ", actual=" + classActual);
112         }
113 
114     }
115 
116     static void assertInnerFlags(ClassFile classFile, String name, int expected) throws ConstantPoolException {
117         int innerActual = lookupInnerFlags(classFile, name).flags;
118         if (innerActual != expected) {
119             throw new AssertionError("Incorrect inner_class_access_flags for class " + name +
120                                      " in class " + classFile.getName() +
121                                      ": expected=" + expected + ", actual=" + innerActual);
122         }
123     }
124 
125     private static AccessFlags lookupInnerFlags(ClassFile classFile, String innerName) throws ConstantPoolException {
126         InnerClasses_attribute inners = (InnerClasses_attribute) classFile.getAttribute("InnerClasses");
127         if (inners == null) {
128             throw new AssertionError("InnerClasses attribute missing in class " + classFile.getName());
129         }
130         for (InnerClasses_attribute.Info info : inners.classes) {
131             String entryName = info.getInnerClassInfo(classFile.constant_pool).getName();
132             if (innerName.equals(entryName)) {
133                 return info.inner_class_access_flags;
134             }
135         }
136         throw new AssertionError("No InnerClasses entry in class " + classFile.getName() + " for class " + innerName);
137     }
138 
139 }