trekel / src / php / Trekel / Node / Attribute.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.
 */

/**
 * Abstract attribute node
 *
 * @package Trekel
 * @subpackage Trekel_Node
 * @author Joey Mazzarelli <joey@mazzarelli.com>
 * @copyright 2011 Joey Mazzarelli
 */
abstract class Trekel_Node_Attribute extends Trekel_Node {

  /**
   * @var string
   */
  protected $attributeValue = null;

  /**
   * @var string
   */
  protected $attributeId = null;

  /**
   * Get the value to match against
   * @return string
   */
  public function getValue () {
    return $this->attributeValue;
  }

  /**
   * Set the value to match against
   * @param string $value Value to match against
   * @return void
   */
  public function setValue ($value) {
    $this->attributeValue = $value;
  }

  /**
   * Set the attribute id
   * @param string $id Id to use
   * @return void
   */
  public function setIdentifier ($id) {
    $this->attributeId = $id;
  }

  /**
   * Get the attribute id
   * @return string
   */
  public function getIdentifier () {
    return $this->attributeId;
  }

  /**
   * Get the data from a node
   * @param object $node Node from which to get the attribute data
   * @return string
   */
  protected function getData ($node) {
    if (substr($this->attributeId, -2) == "()") {
      $method = substr($this->attributeId, 0, -2);
      return $node->$method();
    } else {
      return $node->{$this->attributeId};
    }
  }

} // end Trekel_Node_Attribute
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