<?php
/**
* League.csv - A lightweight CSV Coder/Decoder library
*
* @author Ignace Nyamagana Butera <nyamsprod@gmail.com>
* @copyright 2014 Ignace Nyamagana Butera
* @link https://github.com/nyamsprod/League.csv
* @license http://opensource.org/licenses/MIT
* @version 5.0.0
* @package League.csv
*
* MIT LICENSE
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
namespace League\Csv\Iterator;

use IteratorIterator;
use Traversable;

/**
 *  A simple MapIterator
 *
 * @package League.csv
 * @since  3.3.0
 *
 */
class MapIterator extends IteratorIterator
{
    /**
     * The function to be apply on all InnerIterator element
     *
     * @var callable
     */
    private $callable;

    /**
     * The Constructor
     *
     * @param Traversable $iterator
     * @param callable    $callable
     */
    public function __construct(Traversable $iterator, callable $callable)
    {
        parent::__construct($iterator);
        $this->callable = $callable;
    }

    /**
     * Get the value of the current element
     */
    public function current()
    {
        $iterator = $this->getInnerIterator();
        $callable = $this->callable;

        return $callable($iterator->current(), $iterator->key(), $iterator);
    }
}