contrib/sb-posix/designator.lisp

   1 (in-package :sb-posix)
   2 (defvar *designator-types* (make-hash-table :test #'equal))
   3
   4 (defmacro define-designator (name (lisp-type alien-type) doc
   5                              &body conversions)
   6   (let ((designator-type `(or ,@(mapcar #'car conversions)))
   7         (designator-name (intern (format nil "~A-~A"
   8                                          (symbol-name name)
   9                                   (symbol-name :designator))
  10                                  #.*package*))
  11         (name (intern (symbol-name name) :sb-posix)))
  12     `(progn
  13        (deftype ,name ()
  14          ,@(when doc (list (first doc)))
  15          ',lisp-type)
  16        (deftype ,designator-name ()
  17          ,@(when doc (list (second doc)))
  18          ',designator-type)
  19       (eval-when (:compile-toplevel :load-toplevel :execute)
  20         (setf (gethash ',name *designator-types*) ',alien-type))
  21       (declaim (ftype (function (t) (values ,lisp-type &optional)) ,name))
  22       (defun ,name (,name)
  23         ,@(when doc (list (third doc)))
  24         (etypecase ,name
  25           ,@conversions)))))
  26