Vanilla\Addon::scanFile PHP Method

    private static function scanFile($path)
    {
        $classes = $nsPos = $final = [];
        $foundNamespace = false;
        $ii = 0;
        if (!file_exists($path)) {
            return [];
        }
        $er = error_reporting();
        error_reporting(E_ALL ^ E_NOTICE);
        $php_code = file_get_contents($path);
        $tokens = token_get_all($php_code);
        //        $count = count($tokens);
        foreach ($tokens as $i => $token) {
            //} ($i = 0; $i < $count; $i++) {
            if (!$foundNamespace && $token[0] == T_NAMESPACE) {
                $nsPos[$ii]['start'] = $i;
                $foundNamespace = true;
            } elseif ($foundNamespace && ($token == ';' || $token == '{')) {
                $nsPos[$ii]['end'] = $i;
                $ii++;
                $foundNamespace = false;
            } elseif ($i - 2 >= 0 && $tokens[$i - 2][0] == T_CLASS && $tokens[$i - 1][0] == T_WHITESPACE && $token[0] == T_STRING) {
                if ($i - 4 >= 0 && $tokens[$i - 4][0] == T_ABSTRACT) {
                    $classes[$ii][] = array('name' => $token[1], 'type' => 'ABSTRACT CLASS');
                } else {
                    $classes[$ii][] = array('name' => $token[1], 'type' => 'CLASS');
                }
            } elseif ($i - 2 >= 0 && $tokens[$i - 2][0] == T_INTERFACE && $tokens[$i - 1][0] == T_WHITESPACE && $token[0] == T_STRING) {
                $classes[$ii][] = array('name' => $token[1], 'type' => 'INTERFACE');
            } elseif ($i - 2 >= 0 && $tokens[$i - 2][0] == T_TRAIT && $tokens[$i - 1][0] == T_WHITESPACE && $token[0] == T_STRING) {
                $classes[$ii][] = array('name' => $token[1], 'type' => 'TRAIT');
            }
        }
        error_reporting($er);
        if (empty($classes)) {
            return [];
        }
        if (!empty($nsPos)) {
            foreach ($nsPos as $k => $p) {
                $ns = '';
                for ($i = $p['start'] + 1; $i < $p['end']; $i++) {
                    $ns .= $tokens[$i][1];
                }
                $ns = trim($ns);
                $final[$k] = array('namespace' => $ns, 'classes' => $classes[$k + 1]);
            }
            $classes = $final;
        }
        return $classes;
    }