[gnus git] branch master updated: m0-5-172-g1dd17bf =1= gmm-utils.el (gmm-labels): Use cl-labels if available

       via  1dd17bf9b604184bffb73cceb9e3892b323efd52 (commit)
      from  4701091fb20fe41f824040bd0ce4513a58b00468 (commit)


- Log -----------------------------------------------------------------
commit 1dd17bf9b604184bffb73cceb9e3892b323efd52
Author: Katsumi Yamaoka <[email protected]>
Date:   Tue Dec 4 23:23:55 2012 +0000

    gmm-utils.el (gmm-labels): Use cl-labels if available

diff --git a/lisp/ChangeLog b/lisp/ChangeLog
index b88504a..d9d29e6 100644
--- a/lisp/ChangeLog
+++ b/lisp/ChangeLog
@@ -1,5 +1,9 @@
 2012-12-04  Katsumi Yamaoka  <[email protected]>
 
+	* gmm-utils.el (gmm-labels): Use cl-labels if available.
+
+2012-12-04  Katsumi Yamaoka  <[email protected]>
+
 	* gmm-utils.el (gmm-flet, gmm-labels): New macros.
 
 	* gnus-sync.el (gnus-sync-lesync-call)
diff --git a/lisp/gmm-utils.el b/lisp/gmm-utils.el
index 3d504d7..9be6c66 100644
--- a/lisp/gmm-utils.el
+++ b/lisp/gmm-utils.el
@@ -435,46 +435,14 @@ coding-system."
 	   (fmakunbound (car orig)))))))
 (put 'gmm-flet 'lisp-indent-function 1)
 
-;; An alist of original function names and those unique names.
-(defvar gmm-labels-environment)
-
-(defun gmm-labels-expand (form)
-  "Expand funcalls in FORM according to `gmm-labels-environment'.
-This function is a subroutine that `gmm-labels' uses to convert any
-`(FN ...)' and #'FN elements in FORM into `(funcall UN ...)' and `UN'
-respectively if `(FN . UN)' is listed in `gmm-labels-environment'."
-  (cond ((or (not (consp form)) (memq (car form) '(\` backquote quote)))
-	 form)
-	((assq (car form) gmm-labels-environment)
-	 `(funcall ,(cdr (assq (car form) gmm-labels-environment))
-		   ,@(mapcar #'gmm-labels-expand (cdr form))))
-	((eq (car form) 'function)
-	 (if (and (assq (cadr form) gmm-labels-environment)
-		  (not (cddr form)))
-	     (cdr (assq (cadr form) gmm-labels-environment))
-	   (cons 'function (mapcar #'gmm-labels-expand (cdr form)))))
-	(t
-	 (mapcar #'gmm-labels-expand form))))
-
 (defmacro gmm-labels (bindings &rest body)
   "Make temporary function bindings.
 The lexical scoping is handled via `lexical-let' rather than relying
 on `lexical-binding'.
 
 \(fn ((FUNC ARGLIST BODY...) ...) FORM...)"
-  (let (gmm-labels-environment def defs)
-    (dolist (binding bindings)
-      (push (cons (car binding)
-		  (make-symbol (format "--gmm-%s--" (car binding))))
-	    gmm-labels-environment))
-    `(lexical-let ,(mapcar #'cdr gmm-labels-environment)
-       (setq ,@(dolist (env gmm-labels-environment (nreverse defs))
-		 (setq def (cdr (assq (car env) bindings)))
-		 (push (cdr env) defs)
-		 (push `(lambda ,(car def)
-			  ,@(mapcar #'gmm-labels-expand (cdr def)))
-		       defs)))
-       ,@(mapcar #'gmm-labels-expand body))))
+  `(,(progn (require 'cl) (if (fboundp 'cl-labels) 'cl-labels 'labels))
+    ,bindings ,@body))
 (put 'gmm-labels 'lisp-indent-function 1)
 
 (provide 'gmm-utils)

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Summary of changes:
 lisp/ChangeLog    |    4 ++++
 lisp/gmm-utils.el |   36 ++----------------------------------
 2 files changed, 6 insertions(+), 34 deletions(-)

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