<?php
/**
 * Exception thrown if a parse error occurs
 *
 * @license http://www.opensource.org/licenses/mit-license.php The MIT License
 * @copyright Copyright 2010-2014 PhpCss Team
 */

namespace PhpCss\Exception {

  use Exception;
  use PhpCss;

  /**
   * Exception thrown if a parse error occurs
   *
   * A parse error occurs if certain tokens are expected for further parsing, but
   * none of them are found on the token stream
   */
  abstract class ParserException extends Exception implements PhpCssException {

    /**
     * An array of tokens which would have been expected to be found.
     *
     * @var array(PhpCss\Scanner\Token)
     */
    protected $_expectedTokens = [];

    public function getExpected(): array {
      return $this->_expectedTokens;
    }
  }
}