protected function parseFields()
	{
		$this->fields = array();
		$matches      = array();

		// Get all of the available fields in the format string.
		preg_match_all('/{(.*?)}/i', $this->format, $matches);

		// Build the parsed fields list based on the found fields.
		foreach ($matches[1] as $match)
		{
			$this->fields[] = strtoupper($match);
		}
	}