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 java.base/jdk.internal.classfile
29 * java.base/jdk.internal.classfile.attribute
30 * java.base/jdk.internal.classfile.constantpool
31 * java.base/jdk.internal.classfile.instruction
32 * java.base/jdk.internal.classfile.components
33 * java.base/jdk.internal.classfile.impl
34 * @run main AnonymousClassFlags
35 */
36
37 import java.util.*;
38 import java.nio.file.Path;
39 import java.nio.file.Paths;
40
41 import jdk.internal.classfile.*;
42 import jdk.internal.classfile.attribute.InnerClassInfo;
43 import jdk.internal.classfile.attribute.InnerClassesAttribute;
44
45 public class AnonymousClassFlags {
46 public static void main(String[] args) throws Exception {
47 new AnonymousClassFlags().test(System.getProperty("test.classes", "."));
48 }
49
50 /** Maps names of anonymous classes to their expected inner_class_access_flags */
51 private static Map<String, Integer> anonClasses = new LinkedHashMap<>();
52
53 // ******* TEST CASES ********
54
55 static Object o1 = new Object() {
56 { anonClasses.put(getClass().getName(), Classfile.ACC_IDENTITY); }
57 };
58
59 static void staticMethod() {
60 Object o2 = new Object() {
61 { anonClasses.put(getClass().getName(), Classfile.ACC_IDENTITY); }
62 };
63 }
64
65 static {
66 staticMethod();
67
68 Object o3 = new Object() {
69 { anonClasses.put(getClass().getName(), Classfile.ACC_IDENTITY); }
70 };
71 }
72
73 Object o4 = new Object() {
74 { anonClasses.put(getClass().getName(), Classfile.ACC_IDENTITY); }
75 };
76
77 void instanceMethod() {
78 Object o5 = new Object() {
79 { anonClasses.put(getClass().getName(), Classfile.ACC_IDENTITY); }
80 };
81 }
82
83 {
84 instanceMethod();
85
86 Object o6 = new Object() {
87 { anonClasses.put(getClass().getName(), Classfile.ACC_IDENTITY); }
88 };
89 }
90
91 // ******* TEST IMPLEMENTATION ********
92
93 void test(String classesDir) throws Exception {
94 staticMethod();
95 instanceMethod();
96
97 Path outerFile = Paths.get(classesDir, getClass().getName() + ".class");
98 ClassModel outerClass = Classfile.of().parse(outerFile);
99 for (Map.Entry<String,Integer> entry : anonClasses.entrySet()) {
100 Path innerFile = Paths.get(classesDir, entry.getKey() + ".class");
101 ClassModel innerClass = Classfile.of().parse(innerFile);
102 String name = entry.getKey();
103 int expected = entry.getValue();
104 assertInnerFlags(outerClass, name, expected);
105 assertClassFlags(innerClass, name, expected);
106 assertInnerFlags(innerClass, name, expected);
107 }
108 }
109
110 static void assertClassFlags(ClassModel classFile, String name, int expected) {
111 int mask = Classfile.ACC_PUBLIC | Classfile.ACC_FINAL | Classfile.ACC_INTERFACE | Classfile.ACC_ABSTRACT |
112 Classfile.ACC_SYNTHETIC | Classfile.ACC_ANNOTATION | Classfile.ACC_ENUM | Classfile.ACC_IDENTITY;
113 int classExpected = (expected & mask);
114 int classActual = classFile.flags().flagsMask();
115 if (classActual != classExpected) {
116 throw new AssertionError("Incorrect access_flags for class " + name +
117 ": expected=" + classExpected + ", actual=" + classActual);
118 }
119
120 }
121
122 static void assertInnerFlags(ClassModel classFile, String name, int expected) {
123 int innerActual = lookupInnerFlags(classFile, name);
124 if (innerActual != expected) {
125 throw new AssertionError("Incorrect inner_class_access_flags for class " + name +
126 " in class " + classFile.thisClass().asInternalName() +
127 ": expected=" + expected + ", actual=" + innerActual);
128 }
129 }
130
131 private static int lookupInnerFlags(ClassModel classFile, String innerName) {
132 InnerClassesAttribute inners = classFile.findAttribute(Attributes.INNER_CLASSES).orElse(null);
133 if (inners == null) {
134 throw new AssertionError("InnerClasses attribute missing in class " + classFile.thisClass().asInternalName());
135 }
136 for (InnerClassInfo info: inners.classes()) {
137 String entryName = info.innerClass().asInternalName();
138 if (innerName.equals(entryName)) {
139 return info.flagsMask();
140 }
141 }
142 throw new AssertionError("No InnerClasses entry in class " + classFile.thisClass().asInternalName() + " for class " + innerName);
143 }
144
145 }