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43203b4 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 | ;;;; -*- Mode: lisp; indent-tabs-mode: nil -*-
;;;
;;; sys-utils.lisp --- Various utilities.
;;;
;;; Copyright (C) 2022, Stelian Ionescu <sionescu@cddr.org>
;;;
;;; Permission is hereby granted, free of charge, to any person
;;; obtaining a copy of this software and associated documentation
;;; files (the "Software"), to deal in the Software without
;;; restriction, including without limitation the rights to use, copy,
;;; modify, merge, publish, distribute, sublicense, and/or sell copies
;;; of the Software, and to permit persons to whom the Software is
;;; furnished to do so, subject to the following conditions:
;;;
;;; The above copyright notice and this permission notice shall be
;;; included in all copies or substantial portions of the Software.
;;;
;;; THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
;;; EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
;;; MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
;;; NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
;;; HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
;;; WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
;;; OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
;;; DEALINGS IN THE SOFTWARE.
;;;
(in-package #:cffi-sys)
(defun quoted-form-p (form)
(and (proper-list-p form)
(= 2 (length form))
(eql 'quote (car form))))
(defun constant-form-p (form &optional env)
(let ((form (if (symbolp form)
(macroexpand form env)
form)))
(or (quoted-form-p form)
(constantp form env))))
(defun constant-form-value (form &optional env)
(declare (ignorable env))
(cond
((quoted-form-p form)
(second form))
(t
#+clozure
(ccl::eval-constant form)
#+sbcl
(sb-int:constant-form-value form env)
#-(or clozure sbcl)
(eval form))))
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