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<?php
/**
 * PHPUnit
 *
 * Copyright (c) 2011-2013, Sebastian Bergmann <sebastian@phpunit.de>.
 * 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 Sebastian Bergmann nor the names of his
 *     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 OWNER 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    PHPUnit
 * @subpackage Extensions_Story
 * @author     Mattis Stordalen Flister <mattis@xait.no>
 * @author     Sebastian Bergmann <sebastian@phpunit.de>
 * @copyright  2011-2013 Sebastian Bergmann <sebastian@phpunit.de>
 * @license    http://www.opensource.org/licenses/BSD-3-Clause  The BSD 3-Clause License
 * @link       http://www.phpunit.de/
 * @since      File available since Release 3.3.0
 */

/**
 * A step of a scenario.
 *
 * @package    PHPUnit
 * @subpackage Extensions_Story
 * @author     Mattis Stordalen Flister <mattis@xait.no>
 * @author     Sebastian Bergmann <sebastian@phpunit.de>
 * @copyright  2011-2013 Sebastian Bergmann <sebastian@phpunit.de>
 * @license    http://www.opensource.org/licenses/BSD-3-Clause  The BSD 3-Clause License
 * @version    Release: 1.0.2
 * @link       http://www.phpunit.de/
 * @since      Class available since Release 3.3.0
 */
abstract class PHPUnit_Extensions_Story_Step
{
    /**
     * @var    string
     */
    protected $action;

    /**
     * @var    array
     */
    protected $arguments;

    /**
     * Constructor.
     *
     * @param  array $arguments
     */
    public function __construct(array $arguments)
    {
        $this->action    = array_shift($arguments);
        $this->arguments = $arguments;
    }

    /**
     * Returns this step's action.
     *
     * @return string
     */
    public function getAction()
    {
        return $this->action;
    }

    /**
     * Returns this step's arguments.
     *
     * @param  boolean $asString
     * @return array|string
     */
    public function getArguments($asString = FALSE)
    {
        if (!$asString) {
            return $this->arguments;
        } else {
            switch (count($this->arguments)) {
                case 0: {
                    return '';
                }
                break;

                case 1: {
                    return $this->arguments[0];
                }
                break;

                default: {
                    return var_export($this->arguments, TRUE);
                }
            }
        }
    }

    /**
     * Returns this step's name.
     *
     * @return string
     */
    abstract public function getName();
}