Nette\DI\PhpReflection::parseUseStatements PHP Метод

    public static function parseUseStatements($code, $forClass = NULL)
    {
        $tokens = token_get_all($code);
        $namespace = $class = $classLevel = $level = NULL;
        $res = $uses = [];
        while (list(, $token) = each($tokens)) {
            switch (is_array($token) ? $token[0] : $token) {
                case T_NAMESPACE:
                    $namespace = ltrim(self::fetch($tokens, [T_STRING, T_NS_SEPARATOR]) . '\\', '\\');
                    $uses = [];
                    break;
                case T_CLASS:
                case T_INTERFACE:
                case T_TRAIT:
                    if ($name = self::fetch($tokens, T_STRING)) {
                        $class = $namespace . $name;
                        $classLevel = $level + 1;
                        $res[$class] = $uses;
                        if ($class === $forClass) {
                            return $res;
                        }
                    }
                    break;
                case T_USE:
                    while (!$class && ($name = self::fetch($tokens, [T_STRING, T_NS_SEPARATOR]))) {
                        $name = ltrim($name, '\\');
                        if (self::fetch($tokens, '{')) {
                            while ($suffix = self::fetch($tokens, [T_STRING, T_NS_SEPARATOR])) {
                                if (self::fetch($tokens, T_AS)) {
                                    $uses[self::fetch($tokens, T_STRING)] = $name . $suffix;
                                } else {
                                    $tmp = explode('\\', $suffix);
                                    $uses[end($tmp)] = $name . $suffix;
                                }
                                if (!self::fetch($tokens, ',')) {
                                    break;
                                }
                            }
                        } elseif (self::fetch($tokens, T_AS)) {
                            $uses[self::fetch($tokens, T_STRING)] = $name;
                        } else {
                            $tmp = explode('\\', $name);
                            $uses[end($tmp)] = $name;
                        }
                        if (!self::fetch($tokens, ',')) {
                            break;
                        }
                    }
                    break;
                case T_CURLY_OPEN:
                case T_DOLLAR_OPEN_CURLY_BRACES:
                case '{':
                    $level++;
                    break;
                case '}':
                    if ($level === $classLevel) {
                        $class = $classLevel = NULL;
                    }
                    $level--;
            }
        }
        return $res;
    }