142 lines
5.2 KiB
Java
142 lines
5.2 KiB
Java
/*
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* Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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* @bug 8161013
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* @summary Verify that anonymous class binaries have the correct flags set
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* @enablePreview
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* @modules java.base/jdk.internal.classfile.impl
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* @run main AnonymousClassFlags
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*/
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import java.util.*;
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import java.nio.file.Path;
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import java.nio.file.Paths;
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import java.lang.classfile.*;
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import java.lang.classfile.attribute.InnerClassInfo;
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import java.lang.classfile.attribute.InnerClassesAttribute;
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public class AnonymousClassFlags {
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public static void main(String[] args) throws Exception {
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new AnonymousClassFlags().test(System.getProperty("test.classes", "."));
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}
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/** Maps names of anonymous classes to their expected inner_class_access_flags */
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private static Map<String, Integer> anonClasses = new LinkedHashMap<>();
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// ******* TEST CASES ********
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static Object o1 = new Object() {
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{ anonClasses.put(getClass().getName(), 0); }
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};
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static void staticMethod() {
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Object o2 = new Object() {
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{ anonClasses.put(getClass().getName(), 0); }
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};
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}
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static {
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staticMethod();
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Object o3 = new Object() {
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{ anonClasses.put(getClass().getName(), 0); }
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};
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}
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Object o4 = new Object() {
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{ anonClasses.put(getClass().getName(), 0); }
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};
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void instanceMethod() {
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Object o5 = new Object() {
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{ anonClasses.put(getClass().getName(), 0); }
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};
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}
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{
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instanceMethod();
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Object o6 = new Object() {
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{ anonClasses.put(getClass().getName(), 0); }
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};
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}
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// ******* TEST IMPLEMENTATION ********
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void test(String classesDir) throws Exception {
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staticMethod();
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instanceMethod();
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Path outerFile = Paths.get(classesDir, getClass().getName() + ".class");
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ClassModel outerClass = ClassFile.of().parse(outerFile);
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for (Map.Entry<String,Integer> entry : anonClasses.entrySet()) {
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Path innerFile = Paths.get(classesDir, entry.getKey() + ".class");
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ClassModel innerClass = ClassFile.of().parse(innerFile);
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String name = entry.getKey();
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int expected = entry.getValue();
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assertInnerFlags(outerClass, name, expected);
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assertClassFlags(innerClass, name, expected);
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assertInnerFlags(innerClass, name, expected);
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}
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}
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static void assertClassFlags(ClassModel classFile, String name, int expected) {
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int mask = ClassFile.ACC_PUBLIC | ClassFile.ACC_FINAL | ClassFile.ACC_INTERFACE | ClassFile.ACC_ABSTRACT |
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ClassFile.ACC_SYNTHETIC | ClassFile.ACC_ANNOTATION | ClassFile.ACC_ENUM;
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int classExpected = (expected & mask) | ClassFile.ACC_SUPER;
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int classActual = classFile.flags().flagsMask();
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if (classActual != classExpected) {
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throw new AssertionError("Incorrect access_flags for class " + name +
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": expected=" + classExpected + ", actual=" + classActual);
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}
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}
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static void assertInnerFlags(ClassModel classFile, String name, int expected) {
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int innerActual = lookupInnerFlags(classFile, name);
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if (innerActual != expected) {
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throw new AssertionError("Incorrect inner_class_access_flags for class " + name +
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" in class " + classFile.thisClass().asInternalName() +
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": expected=" + expected + ", actual=" + innerActual);
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}
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}
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private static int lookupInnerFlags(ClassModel classFile, String innerName) {
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InnerClassesAttribute inners = classFile.findAttribute(Attributes.innerClasses()).orElse(null);
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if (inners == null) {
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throw new AssertionError("InnerClasses attribute missing in class " + classFile.thisClass().asInternalName());
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}
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for (InnerClassInfo info: inners.classes()) {
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String entryName = info.innerClass().asInternalName();
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if (innerName.equals(entryName)) {
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return info.flagsMask();
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}
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}
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throw new AssertionError("No InnerClasses entry in class " + classFile.thisClass().asInternalName() + " for class " + innerName);
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}
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}
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