src/features.lisp

   1 ;;;; -*- Mode: lisp; indent-tabs-mode: nil -*-
   2 ;;;
   3 ;;; features.lisp --- CFFI-specific features (DEPRECATED).
   4 ;;;
   5 ;;; Copyright (C) 2006-2007, Luis Oliveira  <loliveira@common-lisp.net>
   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 #:cl-user)
  29
  30 (eval-when (:compile-toplevel :load-toplevel :execute)
  31   (pushnew :cffi *features*))
  32
  33 ;;; CFFI-SYS backends take care of pushing the appropriate features to
  34 ;;; *features*.  See each cffi-*.lisp file.
  35 ;;;
  36 ;;; Not anymore, I think we should use TRIVIAL-FEATURES for the
  37 ;;; platform features instead.  Less pain.  CFFI-FEATURES is now
  38 ;;; deprecated and this code will stay here for a while for backwards
  39 ;;; compatibility purposes, to be removed in a future release.
  40
  41 (in-package #:cffi-features)
  42
  43 (defun cffi-feature-p (feature-expression)
  44   "Matches a FEATURE-EXPRESSION against those symbols in *FEATURES*
  45 that belong to the CFFI-FEATURES package."
  46   (when (eql feature-expression t)
  47     (return-from cffi-feature-p t))
  48   (let ((features-package (find-package '#:cffi-features)))
  49     (flet ((cffi-feature-eq (name feature-symbol)
  50              (and (eq (symbol-package feature-symbol) features-package)
  51                   (string= name (symbol-name feature-symbol)))))
  52       (etypecase feature-expression
  53         (symbol
  54          (not (null (member (symbol-name feature-expression) *features*
  55                             :test #'cffi-feature-eq))))
  56         (cons
  57          (ecase (first feature-expression)
  58            (:and (every #'cffi-feature-p (rest feature-expression)))
  59            (:or  (some #'cffi-feature-p (rest feature-expression)))
  60            (:not (not (cffi-feature-p (cadr feature-expression))))))))))
  61
  62 ;;; for backwards compatibility
  63 (mapc (lambda (sym) (pushnew sym *features*))
  64       '(#+darwin darwin
  65         #+unix unix
  66         #+windows windows
  67         #+ppc ppc32
  68         #+x86 x86
  69         #+x86-64 x86-64
  70         #+sparc sparc
  71         #+sparc64 sparc64
  72         #+hppa hppa
  73         #+hppa64 hppa64
  74         #+cffi-sys::no-long-long no-long-long
  75         #+cffi-sys::flat-namespace flat-namespace
  76         #+cffi-sys::no-foreign-funcall no-foreign-funcall
  77         #+cffi-sys::no-stdcall no-stdcall
  78         ))