org.javimmutable.collections.JImmutableList Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of javimmutable-collections Show documentation

Library providing immutable/persistent collection classes for Java. While collections are immutable they provide methods for adding and removing values by creating new modified copies of themselves. Each copy shares almost all of its structure with other copies to minimize memory consumption.

There is a newer version: 3.2.1

Show newest version

///###////////////////////////////////////////////////////////////////////////
//
// Burton Computer Corporation
// http://www.burton-computer.com
//
// Copyright (c) 2013, Burton Computer Corporation
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
//     Redistributions of source code must retain the above copyright
//     notice, this list of conditions and the following disclaimer.
//
//     Redistributions in binary form must reproduce the above copyright
//     notice, this list of conditions and the following disclaimer in
//     the documentation and/or other materials provided with the
//     distribution.
//
//     Neither the name of the Burton Computer Corporation nor the names
//     of its contributors may be used to endorse or promote products
//     derived from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

package org.javimmutable.collections;

import java.util.List;

/**
 * Interface for containers that store items in list form with individual items available
 * for get() and assign() using their indexes.  Items inserted into the list are always added at
 * the end of the list and indexes of items are always in the range 0 through size() - 1.
 *
 * @param 
 */
public interface JImmutableList
        extends Insertable,
                Indexed,
                Cursorable,
                Iterable
{
    /**
     * @return number of values in the list
     */
    int size();

    /**
     * Retrieves the value at the specified index (which must be within the bounds
     * of the list).
     *
     * @param index
     * @return
     * @throws IndexOutOfBoundsException if index is out of bounds
     */
    T get(int index);

    /**
     * Replaces the value at the specified index (which must be within current
     * bounds of the list) with the new value.
     *
     * @param index
     * @param value
     * @return
     * @throws IndexOutOfBoundsException if index is out of bounds
     */
    JImmutableList assign(int index,
                             T value);

    /**
     * Removes the last value from the list and reduces size by 1.  size() must be greater than zero
     *
     * @return new PersistentList without last value
     * @throws IndexOutOfBoundsException if list is already empty
     */
    JImmutableList deleteLast();

    /**
     * Adds a value to the end of the list.  May be invoked on an empty list.
     *
     * @param value
     * @return
     */
    JImmutableList insert(T value);

    /**
     * @return true only if list contains no values
     */
    boolean isEmpty();

    /**
     * Returns an unmodifiable List implementation backed by this list.
     *
     * @return
     */
    public List getList();
}