contrib/sb-posix/designator.lisp

   1 (in-package :sb-posix-internal)
   2 (defvar *designator-types* (make-hash-table :test #'equal))
   3
   4 (defmacro define-designator (name result &body conversions)
   5   (let ((type `(quote (or ,@(mapcar #'car conversions))))
   6         (typename (intern (format nil "~A-~A"
   7                                   (symbol-name name)
   8                                   (symbol-name :designator))
   9                           #.*package*)))
  10     `(progn
  11       (eval-when (:compile-toplevel :load-toplevel :execute)
  12         (deftype ,typename () ,type)
  13         (setf (gethash ',name *designator-types*) ',result))
  14       (defun ,(intern (symbol-name name) :sb-posix) (,name)
  15         (declare (type ,typename ,name))
  16         (etypecase ,name
  17           ,@conversions)))))
  18