ParameterNotFoundException.php

<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */
namespace Symfony\Component\DependencyInjection\Exception;


/**
 * This exception is thrown when a non-existent parameter is used.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class ParameterNotFoundException extends InvalidArgumentException {
  private $key;
  private $sourceId;
  private $sourceKey;
  private $alternatives;

  /**
   * Constructor.
   *
   * @param string     $key          The requested parameter key
   * @param string     $sourceId     The service id that references the non-existent parameter
   * @param string     $sourceKey    The parameter key that references the non-existent parameter
   * @param \Exception $previous     The previous exception
   * @param string[]   $alternatives Some parameter name alternatives
   */
  public function __construct($key, $sourceId = null, $sourceKey = null, \Exception $previous = null, array $alternatives = array()) {
    $this->key = $key;
    $this->sourceId = $sourceId;
    $this->sourceKey = $sourceKey;
    $this->alternatives = $alternatives;
    parent::__construct('', 0, $previous);
    $this
      ->updateRepr();
  }
  public function updateRepr() {
    if (null !== $this->sourceId) {
      $this->message = sprintf('The service "%s" has a dependency on a non-existent parameter "%s".', $this->sourceId, $this->key);
    }
    elseif (null !== $this->sourceKey) {
      $this->message = sprintf('The parameter "%s" has a dependency on a non-existent parameter "%s".', $this->sourceKey, $this->key);
    }
    else {
      $this->message = sprintf('You have requested a non-existent parameter "%s".', $this->key);
    }
    if ($this->alternatives) {
      if (1 == count($this->alternatives)) {
        $this->message .= ' Did you mean this: "';
      }
      else {
        $this->message .= ' Did you mean one of these: "';
      }
      $this->message .= implode('", "', $this->alternatives) . '"?';
    }
  }
  public function getKey() {
    return $this->key;
  }
  public function getSourceId() {
    return $this->sourceId;
  }
  public function getSourceKey() {
    return $this->sourceKey;
  }
  public function setSourceId($sourceId) {
    $this->sourceId = $sourceId;
    $this
      ->updateRepr();
  }
  public function setSourceKey($sourceKey) {
    $this->sourceKey = $sourceKey;
    $this
      ->updateRepr();
  }

}