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authorStefan Monnier <monnier@iro.umontreal.ca>2017-03-24 09:21:52 -0400
committerLars Brinkhoff <lars@nocrew.org>2017-03-30 18:31:27 +0200
commit390612eb7ab8ccf0792fda7c48b7056c5cda9b06 (patch)
tree71766520a963d9c970cd72e8a2022302661a9f94 /test/lisp/emacs-lisp
parent43cb754a3109ac9afaeab1f08e35673b078a7a09 (diff)
downloademacs-scratch/record.tar.gz
Backward compatibility with pre-existing struct instances.scratch/record
* lisp/emacs-lisp/cl-lib.el (cl--old-struct-type-of): New function. (cl-old-struct-compat-mode): New minor mode. * lisp/emacs-lisp/cl-macs.el (cl-defstruct): Pass `record' to cl-struct-define to signal use of record objects. * lisp/emacs-lisp/cl-preloaded.el (cl--struct-get-class, cl-struct-define): Enable legacy defstruct compatibility. * test/lisp/emacs-lisp/cl-lib-tests.el (cl-lib-old-struct, old-struct): New tests. * doc/lispref/elisp.texi, doc/lispref/records.texi: Document `old-struct-compat'.
Diffstat (limited to 'test/lisp/emacs-lisp')
-rw-r--r--test/lisp/emacs-lisp/cl-lib-tests.el23
1 files changed, 23 insertions, 0 deletions
diff --git a/test/lisp/emacs-lisp/cl-lib-tests.el b/test/lisp/emacs-lisp/cl-lib-tests.el
index 26b19e93e42..98c4bd92de6 100644
--- a/test/lisp/emacs-lisp/cl-lib-tests.el
+++ b/test/lisp/emacs-lisp/cl-lib-tests.el
@@ -500,4 +500,27 @@
(should (eq (type-of x) 'foo))
(should (eql (foo-x x) 42))))
+(ert-deftest old-struct ()
+ (cl-defstruct foo x)
+ (let ((x [cl-struct-foo])
+ (saved cl-old-struct-compat-mode))
+ (cl-old-struct-compat-mode -1)
+ (should (eq (type-of x) 'vector))
+
+ (cl-old-struct-compat-mode 1)
+ (setq cl-struct-foo (cl--struct-get-class 'foo))
+ (setf (symbol-function 'cl-struct-foo) :quick-object-witness-check)
+ (should (eq (type-of x) 'foo))
+ (should (eq (type-of [foo]) 'vector))
+
+ (cl-old-struct-compat-mode (if saved 1 -1))))
+
+(ert-deftest cl-lib-old-struct ()
+ (let ((saved cl-old-struct-compat-mode))
+ (cl-old-struct-compat-mode -1)
+ (cl-struct-define 'foo "" 'cl-structure-object nil nil nil
+ 'cl-struct-foo-tags 'cl-struct-foo t)
+ (should cl-old-struct-compat-mode)
+ (cl-old-struct-compat-mode (if saved 1 -1))))
+
;;; cl-lib.el ends here