How does Magento\Setup\Module\Di\Code\Reader\ClassesScanner::getList() work?

dmitry_fedyuk · October 13, 2017, 4:30pm

Context:

magento/magento2/blob/2.2.0/setup/src/Magento/Setup/Module/Di/Code/Reader/ClassesScanner.php#L53-L84


/**
 * Retrieves list of classes for given path
 *
 * @param string $path
 * @return array
 * @throws FileSystemException
 * @SuppressWarnings(PHPMD.CyclomaticComplexity)
 */
public function getList($path)
{


    $realPath = realpath($path);
    $isGeneration = strpos($realPath, $this->generationDirectory) === 0;


    // Generation folders should not have their results cached since they may actually change during compile
    if (!$isGeneration && isset($this->fileResults[$realPath])) {
        return $this->fileResults[$realPath];
    }
    if (!(bool)$realPath) {
        throw new FileSystemException(new \Magento\Framework\Phrase('Invalid path: %1', [$path]));
    }
    $recursiveIterator = new \RecursiveIteratorIterator(
        new \RecursiveDirectoryIterator($realPath, \FilesystemIterator::FOLLOW_SYMLINKS),
        \RecursiveIteratorIterator::SELF_FIRST
    );


    $classes = $this->extract($recursiveIterator);
    if (!$isGeneration) {
        $this->fileResults[$realPath] = $classes;
    }
    return $classes;
}