;;; -*- Mode: Scheme -*-

;;;; Meta-Names

;;; Copyright (c) 2009, Taylor R. Campbell
;;;
;;; Redistribution and use in source and binary forms, with or without
;;; modification, are permitted provided that the following conditions
;;; are met:
;;;
;;; * Redistributions of source code must retain the above copyright
;;;   notice, this list of conditions and the following disclaimer.
;;;
;;; * Redistributions in binary form must reproduce the above copyright
;;;   notice, this list of conditions and the following disclaimer in
;;;   the documentation and/or other materials provided with the
;;;   distribution.
;;;
;;; * Neither the names of the authors nor the names of contributors
;;;   may be used to endorse or promote products derived from this
;;;   software without specific prior written permission.
;;;
;;; THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS
;;; OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
;;; WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
;;; ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY
;;; DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
;;; DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
;;; GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
;;; INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
;;; WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
;;; NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
;;; SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

;;; (meta FNORD)
;;;   <=>
;;; (let-syntax ((mumble
;;;               (lambda (form rename compare)
;;;                 form compare            ;ignore
;;;                 (list (rename 'CODE-QUOTE)
;;;                       (rename 'FNORD)))))
;;;   (mumble))
;;;
;;; There is a little bit of trickiness here because clients may not
;;; open the CODE-QUOTE structure.

(define-syntax meta
  (lambda (form rename compare)
    `(,(rename 'LET-SYNTAX)
         ((MUMBLE
           (,(rename 'LAMBDA) (FORM RENAME COMPARE)
             FORM COMPARE               ;ignore
             (,(rename 'LIST)
              (,(rename 'CODE-QUOTE) ,(rename 'CODE-QUOTE))
              (RENAME (,(rename 'CODE-QUOTE) ,(cadr form)))))))
       (MUMBLE)))
  (CODE-QUOTE LAMBDA LET-SYNTAX LIST QUOTE))