libffi/init.lisp

   1 ;;;; -*- Mode: lisp; indent-tabs-mode: nil -*-
   2 ;;;
   3 ;;; init.lisp --- Load libffi and define #'libffi-type-pointer
   4 ;;;
   5 ;;; Copyright (C) 2009, 2011 Liam M. Healy
   6 ;;;
   7 ;;; Permission is hereby granted, free of charge, to any person
   8 ;;; obtaining a copy of this software and associated documentation
   9 ;;; files (the "Software"), to deal in the Software without
  10 ;;; restriction, including without limitation the rights to use, copy,
  11 ;;; modify, merge, publish, distribute, sublicense, and/or sell copies
  12 ;;; of the Software, and to permit persons to whom the Software is
  13 ;;; furnished to do so, subject to the following conditions:
  14 ;;;
  15 ;;; The above copyright notice and this permission notice shall be
  16 ;;; included in all copies or substantial portions of the Software.
  17 ;;;
  18 ;;; THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  19 ;;; EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20 ;;; MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  21 ;;; NONINFRINGEMENT.  IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
  22 ;;; HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
  23 ;;; WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  24 ;;; OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  25 ;;; DEALINGS IN THE SOFTWARE.
  26 ;;;
  27
  28 (in-package #:cffi)
  29
  30 (cffi:define-foreign-library (libffi)
  31   (:darwin (:or "libffi.dylib" "libffi32.dylib"))
  32   (:unix (:or "libffi.so.6" "libffi32.so.6" "libffi.so.5" "libffi32.so.5"))
  33   (:windows "libffi.dll")
  34   (t (:default "libffi")))
  35
  36 (cffi:load-foreign-library 'libffi)
  37
  38 (defvar *libffi-type-pointer* (make-hash-table))
  39
  40 (defgeneric libffi-type-pointer (object)
  41   (:documentation "The type pointer defined by libffi.")
  42   (:method ((object symbol))
  43     (libffi-type-pointer (parse-type object)))
  44   (:method (object)
  45     (gethash object *libffi-type-pointer*)))
  46
  47 (defun set-libffi-type-pointer (type pointer)
  48   "Set the hash table entry for the libffi type pointer."
  49   (setf (gethash (if (symbolp type) (parse-type type) type)
  50                  *libffi-type-pointer*)
  51         pointer))