|
|
- ;;; cider-compat.el --- Functions from newer Emacs versions for compatibility -*- lexical-binding: t -*-
-
- ;; Copyright © 2012-2013 Tim King, Phil Hagelberg, Bozhidar Batsov
- ;; Copyright © 2013-2019 Bozhidar Batsov, Artur Malabarba and CIDER contributors
- ;;
-
- ;; This program is free software: you can redistribute it and/or modify
- ;; it under the terms of the GNU General Public License as published by
- ;; the Free Software Foundation, either version 3 of the License, or
- ;; (at your option) any later version.
-
- ;; This program is distributed in the hope that it will be useful,
- ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
- ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- ;; GNU General Public License for more details.
-
- ;; You should have received a copy of the GNU General Public License
- ;; along with this program. If not, see <http://www.gnu.org/licenses/>.
-
- ;; This file is not part of GNU Emacs.
-
- ;;; Commentary:
-
- ;; Everything here was copied from subr-x for compatibility with
- ;; Emacs 25.1.
-
- ;;; Code:
-
- (eval-and-compile
-
- (unless (fboundp 'if-let*)
- (defmacro if-let* (bindings then &rest else)
- "Process BINDINGS and if all values are non-nil eval THEN, else ELSE.
- Argument BINDINGS is a list of tuples whose car is a symbol to be
- bound and (optionally) used in THEN, and its cadr is a sexp to be
- evalled to set symbol's value."
- (declare (indent 2)
- (debug ([&or (&rest (symbolp form)) (symbolp form)] form body)))
- `(let* ,(internal--build-bindings bindings)
- (if ,(car (internal--listify (car (last bindings))))
- ,then
- ,@else))))
-
- (unless (fboundp 'when-let*)
- (defmacro when-let* (bindings &rest body)
- "Process BINDINGS and if all values are non-nil eval BODY.
- Argument BINDINGS is a list of tuples whose car is a symbol to be
- bound and (optionally) used in BODY, and its cadr is a sexp to be
- evalled to set symbol's value."
- (declare (indent 1) (debug if-let*))
- `(if-let* ,bindings ,(macroexp-progn body)))))
-
- (provide 'cider-compat)
- ;;; cider-compat.el ends here
|
