mirror of
https://git.savannah.gnu.org/git/emacs.git
synced 2024-11-21 06:55:39 +00:00
db5915f30b
* lisp/sqlite.el (with-sqlite-transaction): Tuck misplaced body of else form back into feature-test control structure whence it escaped. (Bug#67142) * test/lisp/sqlite-tests.el: New file to accompany test/src/sqlite-tests.el.
58 lines
1.9 KiB
EmacsLisp
58 lines
1.9 KiB
EmacsLisp
;;; sqlite.el --- Functions for interacting with sqlite3 databases -*- lexical-binding: t; -*-
|
|
|
|
;; Copyright (C) 2021-2024 Free Software Foundation, Inc.
|
|
|
|
;; This file is part of GNU Emacs.
|
|
|
|
;; GNU Emacs 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.
|
|
|
|
;; GNU Emacs 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 GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
|
|
|
|
;;; Commentary:
|
|
|
|
;;
|
|
|
|
;;; Code:
|
|
|
|
(declare-function sqlite-transaction "sqlite.c")
|
|
(declare-function sqlite-commit "sqlite.c")
|
|
(declare-function sqlite-rollback "sqlite.c")
|
|
|
|
(defmacro with-sqlite-transaction (db &rest body)
|
|
"Execute BODY while holding a transaction for DB.
|
|
If BODY completes normally, commit the changes and return
|
|
the value of BODY.
|
|
If BODY signals an error, or transaction commit fails, roll
|
|
back the transaction changes before allowing the signal to
|
|
propagate."
|
|
(declare (indent 1) (debug (form body)))
|
|
(let ((db-var (gensym))
|
|
(func-var (gensym))
|
|
(res-var (gensym))
|
|
(commit-var (gensym)))
|
|
`(let ((,db-var ,db)
|
|
(,func-var (lambda () ,@body))
|
|
,res-var ,commit-var)
|
|
(if (sqlite-available-p)
|
|
(unwind-protect
|
|
(progn
|
|
(sqlite-transaction ,db-var)
|
|
(setq ,res-var (funcall ,func-var))
|
|
(setq ,commit-var (sqlite-commit ,db-var))
|
|
,res-var)
|
|
(or ,commit-var (sqlite-rollback ,db-var)))
|
|
(funcall ,func-var)))))
|
|
|
|
(provide 'sqlite)
|
|
|
|
;;; sqlite.el ends here
|