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