eZ\Publish\Core\Persistence\TransformationProcessor\PreprocessedBased::getRules PHP Метод

    protected function getRules()
    {
        if ($this->compiledRules === null) {
            $rules = array();
            foreach ($this->ruleFiles as $file) {
                $rules += (require $file);
            }
            $this->compiledRules = $this->compiler->compile($rules);
        }
        return $this->compiledRules;
    }