/*

 * Copyright (c) 2014, 2015, 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.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * 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 8061778

 * @summary  Wrong LineNumberTable for default constructors

 */

import com.sun.tools.classfile.ClassFile;

import com.sun.tools.classfile.ConstantPoolException;

import com.sun.tools.classfile.Method;

import com.sun.tools.classfile.Attribute;

import com.sun.tools.classfile.Code_attribute;

import com.sun.tools.classfile.LineNumberTable_attribute;

import com.sun.tools.classfile.LineNumberTable_attribute.Entry;

import java.io.IOException;

public class NestedLineNumberTest {

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

        Entry[] lines = findEntries();

        if (lines == null || lines.length != 1) {

            int found = lines == null ? 0 : lines.length;

            error(String.format("LineNumberTable contains wrong number of entries - expected %d, found %d", 1, found));

        }

        int line = lines[0].line_number;

        if (line != 79) {

            error(String.format("LineNumberTable contains wrong line number - expected %d, found %d", 79, line));

        }

    }

    static Entry[] findEntries() throws IOException, ConstantPoolException {

        ClassFile self = ClassFile.read(NestedLineNumberTest.Test.class.getResourceAsStream("NestedLineNumberTest$Test.class"));

        for (Method m : self.methods) {

            if ("<init>".equals(m.getName(self.constant_pool))) {

                Code_attribute code_attribute = (Code_attribute)m.attributes.get(Attribute.Code);

                for (Attribute at : code_attribute.attributes) {

                    if (Attribute.LineNumberTable.equals(at.getName(self.constant_pool))) {

                        return ((LineNumberTable_attribute)at).line_number_table;

                    }

                }

            }

        }

        return null;

    }

    static void error(String msg) {

        throw new AssertionError(msg);

    }

    // The default constructor in this class should get only one LineNumberTable entry,

    // pointing to the first line of the declaration of class Test.

    static class Test {

        static class Empty { }

    }

}