;;; define-symbol-macro.lisp
;;;
;;; Copyright (C) 2003-2004 Peter Graves
;;; $Id$
;;;
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(in-package "SYSTEM")

(defun %define-symbol-macro (symbol expansion)
  (%set-symbol-macro symbol (make-symbol-macro expansion))
  symbol)

(defmacro define-symbol-macro (symbol expansion)
  (when (special-variable-p symbol) ;;TODO astalla also check local declarations?
    (error 'program-error "~S has already been defined as a global variable." symbol))
  `(eval-when (:compile-toplevel :load-toplevel :execute)
     (%define-symbol-macro ',symbol ',expansion)))