trekel / src / php / Trekel / Root.php

<?php
/**
 * Copyright 2010 Joey Mazzarelli. All rights reserved.
 *
 * Redistribution and use in source, with or without modification, is
 * permitted provided that the following condition is met:
 *
 *    1. Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *
 * THIS SOFTWARE IS PROVIDED BY JOEY MAZZARELLI ``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 JOEY MAZZARELLI 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.
 *
 * The views and conclusions contained in the software and documentation
 * are those of the authors and should not be interpreted as representing
 * official policies, either expressed or implied, of Joey Mazzarelli.
 */

/**
 * A placeholder object for the data to evaluate.
 *
 * This object is created when data is about to be evaluated against the
 * parse tree. It provides a way to bootstrap the evaulation. It will never
 * be a part of the matching data. It does not set the parent nodes of
 * its children to itself, so it will never be visited either after
 * the initial bootstrap.
 *
 * @package Trekel
 * @author Joey Mazzarelli <joey@mazzarelli.com>
 * @copyright 2011 Joey Mazzarelli
 */
class Trekel_Root {

  /**
   * @var mixed
   */
  private $data;

  /**
   * Constructor
   * @param mixed $data Data to bootstrap
   */
  public function __construct ($data) {
    $this->data = $data;
  }

  /**
   * Get the children
   * @return array
   */
  public function getChildren () {
    return (is_array($this->data))? $this->data: array($this->data);
  }

} // end Trekel_Root
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