Flow\Loader::__construct PHP Method

    public function __construct($options)
    {
        if (!isset($options['source'])) {
            throw new \RuntimeException('missing source directory');
        }
        if (!isset($options['target'])) {
            throw new \RuntimeException('missing target directory');
        }
        $options += array('mode' => self::RECOMPILE_NORMAL, 'mkdir' => 0777, 'helpers' => array());
        if (!isset($options['adapter'])) {
            $options['adapter'] = new Adapter\FileAdapter($options['source']);
        }
        if (!($target = realpath($options['target'])) || !is_dir($target)) {
            if ($options['mkdir'] === false) {
                throw new \RuntimeException(sprintf('target directory %s not found', $options['target']));
            }
            if (!mkdir($options['target'], $options['mkdir'], true)) {
                throw new \RuntimeException(sprintf('unable to create target directory %s', $options['target']));
            }
        }
        $this->options = array('source' => $options['source'], 'target' => $target, 'mode' => $options['mode'], 'adapter' => $options['adapter'], 'helpers' => $options['helpers']);
        $this->paths = array();
        $this->cache = array();
    }