/*

 * Copyright (c) 2014, 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

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 * questions.

 */

/*

 * @test

 * @bug 8042251

 * @summary Test that outer_class_info_index of local and anonymous class is zero.

 * @build TestBase TestResult InMemoryFileManager ToolBox

 * @run main InnerClassesIndexTest

 */

import java.io.File;

import java.io.FilenameFilter;

import java.util.HashSet;

import java.util.Set;

import java.util.stream.Collectors;

import java.util.stream.Stream;

import com.sun.tools.classfile.Attribute;

import com.sun.tools.classfile.ClassFile;

import com.sun.tools.classfile.InnerClasses_attribute;

import com.sun.tools.classfile.InnerClasses_attribute.Info;

public class InnerClassesIndexTest extends TestResult {

    public static void main(String[] args) throws TestFailedException {

        new InnerClassesIndexTest().test();

    }

    private boolean isExcluded(String className) {

        return !className.startsWith(InnerClassesIndexTest.class.getName())

                || "InnerClassesIndexTest$Inner".equals(className);

    }

    private Set<String> getInnerClasses() {

        FilenameFilter filter = (dir, name) -> name.matches("InnerClassesIndexTest\\$.*\\.class");

        return Stream.of(getClassDir().listFiles(filter))

                .map(File::getName)

                .map(s -> s.replace(".class", ""))

                .collect(Collectors.toSet());

    }

    public void test() throws TestFailedException {

        try {

            addTestCase("Source is InnerClassesIndexTest.java");

            ClassFile classFile = readClassFile(InnerClassesIndexTest.class);

            InnerClasses_attribute attr = (InnerClasses_attribute)

                    classFile.getAttribute(Attribute.InnerClasses);

            Set<String> foundClasses = new HashSet<>();

            for (Info info : attr.classes) {

                String innerName = classFile.constant_pool.

                        getClassInfo(info.inner_class_info_index).getBaseName();

                echo("Testing class : " + innerName);

                if (isExcluded(innerName)) {

                    echo("Ignored : " + innerName);

                    continue;

                }

                foundClasses.add(innerName);

                assertEquals(info.outer_class_info_index, 0,

                        "outer_class_info_index of " + innerName);

                if (innerName.matches("\\$\\d+")) {

                    assertEquals(info.inner_name_index, 0,

                            "inner_name_index of anonymous class");

                }

            }

            Set<String> expectedClasses = getInnerClasses();

            expectedClasses.remove("InnerClassesIndexTest$Inner");

            assertEquals(foundClasses, expectedClasses, "All classes are found");

        } catch (Exception e) {

            addFailure(e);

        } finally {

            checkStatus();

        }

    }

    static class Inner {

    }

    Inner inner1 = new Inner() {

    };

    static Inner inner2 = new Inner() {

    };

    Runnable r = () -> {

        class Local {

        }

        new Local() {

        };

    };

    public void local() {

        class Local {

        }

        new Local() {

        };

    }

    public InnerClassesIndexTest() {

        class Local {

        }

        new Local() {

        };

    }

    {

        class Local {

        }

        new Local() {

        };

    }

    static {

        class Local {

        }

        new Local() {

        };

    }

}