/*

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

 *

 * This code is free software; you can redistribute it and/or modify it

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 * 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.

 *

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/** @test

 *  @bug 8034854

 *  @summary Verify that the InnerClasses attribute has outer_class_info_index zero if it has

 *           inner_name_index zero (for synthetic classes)

 *  @compile SyntheticClasses.java

 *  @run main SyntheticClasses

 */

import java.io.*;

import java.util.*;

import com.sun.tools.classfile.*;

public class SyntheticClasses {

    public static void main(String[] args) throws IOException, ConstantPoolException {

        new SyntheticClasses().run();

    }

    private void run() throws IOException, ConstantPoolException {

        File testClasses = new File(System.getProperty("test.classes"));

        for (File classFile : testClasses.listFiles(f -> f.getName().endsWith(".class"))) {

            ClassFile cf = ClassFile.read(classFile);

            if (cf.getName().matches(".*\\$[0-9]+")) {

                EnclosingMethod_attribute encl =

                        (EnclosingMethod_attribute) cf.getAttribute(Attribute.EnclosingMethod);

                if (encl != null) {

                    if (encl.method_index != 0)

                        throw new IllegalStateException("Invalid EnclosingMethod.method_index: " +

                                                        encl.method_index + ".");

                }

            }

            InnerClasses_attribute attr =

                    (InnerClasses_attribute) cf.getAttribute(Attribute.InnerClasses);

            if (attr != null) {

                for (InnerClasses_attribute.Info info : attr.classes) {

                    if (cf.major_version < 51)

                        throw new IllegalStateException();

                    if (info.inner_name_index == 0 && info.outer_class_info_index != 0)

                        throw new IllegalStateException("Invalid outer_class_info_index=" +

                                                        info.outer_class_info_index +

                                                        "; inner_name_index=" +

                                                        info.inner_name_index + ".");

                }

            }

        }

    }

}

class SyntheticConstructorAccessTag {

    private static class A {

        private A(){}

    }

    public void test() {

        new A();

    }

}

class SyntheticEnumMapping {

    private int convert(E e) {

        switch (e) {

            case A: return 0;

            default: return -1;

        }

    }

    enum E { A }

}

interface SyntheticAssertionsDisabled {

    public default void test() {

        assert false;

    }

}