1 | ;;; compiler-macro.lisp |
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2 | ;;; |
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3 | ;;; Copyright (C) 2003 Peter Graves |
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4 | ;;; $Id: compiler-macro.lisp,v 1.1 2003-11-10 00:11:44 piso Exp $ |
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5 | ;;; |
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6 | ;;; This program is free software; you can redistribute it and/or |
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7 | ;;; modify it under the terms of the GNU General Public License |
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8 | ;;; as published by the Free Software Foundation; either version 2 |
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9 | ;;; of the License, or (at your option) any later version. |
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10 | ;;; |
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11 | ;;; This program is distributed in the hope that it will be useful, |
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12 | ;;; but WITHOUT ANY WARRANTY; without even the implied warranty of |
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13 | ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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14 | ;;; GNU General Public License for more details. |
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15 | ;;; |
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16 | ;;; You should have received a copy of the GNU General Public License |
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17 | ;;; along with this program; if not, write to the Free Software |
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18 | ;;; Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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19 | |
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20 | (in-package "SYSTEM") |
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21 | |
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22 | (defun compiler-macro-function (name &optional environment) |
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23 | (get name 'compiler-macro-expander)) |
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24 | |
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25 | (defun (setf compiler-macro-function) (new-function name &optional environment) |
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26 | (%put name 'compiler-macro-expander new-function)) |
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27 | |
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28 | (defmacro define-compiler-macro (name lambda-list &rest body) |
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29 | (let* ((form (gensym)) |
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30 | (env (gensym)) |
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31 | (body (sys::parse-defmacro lambda-list form body name 'defmacro |
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32 | :environment env)) |
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33 | (expander `(lambda (,form ,env) (block ,name ,body)))) |
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34 | `(progn |
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35 | (sys::%put ',name 'compiler-macro-expander ,expander) |
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36 | ',name))) |
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