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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

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 *

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 * 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).

 *

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 * 2 along with this work; if not, write to the Free Software Foundation,

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/*

 * @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);

    }

}