(mime-entity-implementation-alist): Moved from mime.el.

(mm-define-backend): New macro.
(mm-define-method): New macro.

diff --git a/mime-def.el b/mime-def.el
index accf0a0..bc9632e 100644 (file)
--- a/mime-def.el
+++ b/mime-def.el
@@ -255,6 +255,42 @@ message/rfc822, `mime-entity' structures of them are included in
 (make-variable-buffer-local 'mime-message-structure)
 
 
+;;; @ for mm-backend
+;;;
+
+(defvar mime-entity-implementation-alist nil)
+
+(defmacro mm-define-backend (type &optional parents)
+  (if parents
+      `(let ((rest ',(reverse parents)))
+        (while rest
+          (set-alist 'mime-entity-implementation-alist
+                     ',type
+                     (cdr (assq (car rest)
+                                mime-entity-implementation-alist)))
+          (setq rest (cdr rest))
+          ))))
+
+(defmacro mm-define-method (name args &rest body)
+  (let* ((specializer (car args))
+        (class (nth 1 specializer))
+        (self (car specializer)))
+    `(let ((imps (cdr (assq ',class mime-entity-implementation-alist)))
+          (func (lambda ,(if self
+                             (cons self (cdr args))
+                           (cdr args))
+                  ,@body)))
+       (if imps
+          (set-alist 'mime-entity-implementation-alist
+                     ',class (put-alist ',name func imps))
+        (set-alist 'mime-entity-implementation-alist
+                   ',class
+                   (list (cons ',name func)))
+        ))))
+
+(put 'mm-define-method 'lisp-indent-function 'defun)
+
+
 ;;; @ end
 ;;;