/*

 * 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.

 */

package sun.nio.fs;

import java.nio.file.*;

import java.io.File;

import java.io.IOException;

import java.util.Iterator;

import java.util.NoSuchElementException;

/**

 * Base implementation class of {@code Path}.

 */

abstract class AbstractPath implements Path {

    protected AbstractPath() { }

    @Override

    public final boolean startsWith(String other) {

        return startsWith(getFileSystem().getPath(other));

    }

    @Override

    public final boolean endsWith(String other) {

        return endsWith(getFileSystem().getPath(other));

    }

    @Override

    public final Path resolve(String other) {

        return resolve(getFileSystem().getPath(other));

    }

    @Override

    public final Path resolveSibling(Path other) {

        if (other == null)

            throw new NullPointerException();

        Path parent = getParent();

        return (parent == null) ? other : parent.resolve(other);

    }

    @Override

    public final Path resolveSibling(String other) {

        return resolveSibling(getFileSystem().getPath(other));

    }

    @Override

    public final Iterator<Path> iterator() {

        return new Iterator<Path>() {

            private int i = 0;

            @Override

            public boolean hasNext() {

                return (i < getNameCount());

            }

            @Override

            public Path next() {

                if (i < getNameCount()) {

                    Path result = getName(i);

                    i++;

                    return result;

                } else {

                    throw new NoSuchElementException();

                }

            }

            @Override

            public void remove() {

                throw new UnsupportedOperationException();

            }

        };

    }

    @Override

    public final File toFile() {

        return new File(toString());

    }

    @Override

    public final WatchKey register(WatchService watcher,

                                   WatchEvent.Kind<?>... events)

        throws IOException

    {

        return register(watcher, events, new WatchEvent.Modifier[0]);

    }

}