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/*
 * Copyright 2016 Carlos Ballesteros Velasco
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package java.util;

public abstract class AbstractSequentialList extends AbstractList {
    protected AbstractSequentialList() {
    }

    public E get(int index) {
        try {
            return listIterator(index).next();
        } catch (NoSuchElementException exc) {
            throw new IndexOutOfBoundsException("Index: " + index);
        }
    }

    public E set(int index, E element) {
        try {
            ListIterator e = listIterator(index);
            E oldVal = e.next();
            e.set(element);
            return oldVal;
        } catch (NoSuchElementException exc) {
            throw new IndexOutOfBoundsException("Index: " + index);
        }
    }

    public void add(int index, E element) {
        try {
            listIterator(index).add(element);
        } catch (NoSuchElementException exc) {
            throw new IndexOutOfBoundsException("Index: " + index);
        }
    }

    public E remove(int index) {
        try {
            ListIterator e = listIterator(index);
            E outCast = e.next();
            e.remove();
            return outCast;
        } catch (NoSuchElementException exc) {
            throw new IndexOutOfBoundsException("Index: " + index);
        }
    }


    public boolean addAll(int index, Collection c) {
        try {
            boolean modified = false;
            ListIterator e1 = listIterator(index);
            Iterator e2 = c.iterator();
            while (e2.hasNext()) {
                e1.add(e2.next());
                modified = true;
            }
            return modified;
        } catch (NoSuchElementException exc) {
            throw new IndexOutOfBoundsException("Index: " + index);
        }
    }

    public Iterator iterator() {
        return listIterator();
    }

    public abstract ListIterator listIterator(int index);
}