71 lines
3.4 KiB
Common Lisp
71 lines
3.4 KiB
Common Lisp
;;;; -*- Mode: lisp; indent-tabs-mode: nil -*-
|
|
;;;
|
|
;;; arrays.lisp --- Tests for foreign arrays.
|
|
;;;
|
|
;;; Copyright (C) 2005-2006, James Bielman <jamesjb@jamesjb.com>
|
|
;;; Copyright (C) 2005-2007, Luis Oliveira <loliveira@common-lisp.net>
|
|
;;;
|
|
;;; 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.
|
|
;;;
|
|
|
|
;;;#Foreign Array Conversion Tests
|
|
;;;
|
|
|
|
(in-package #:cffi-tests)
|
|
|
|
(deftest array.foreign-to-lisp.basic
|
|
(with-foreign-array (ptr #(1 2 3 4 5) '(:array :int32 5))
|
|
(foreign-array-to-lisp ptr '(:array :int32 5)))
|
|
#(1 2 3 4 5))
|
|
|
|
(deftest array.foreign-to-lisp.adjustable
|
|
(with-foreign-array (ptr #(1 2 3 4 5) '(:array :int32 5))
|
|
(let ((array (foreign-array-to-lisp ptr '(:array :int32 5)
|
|
:adjustable t)))
|
|
(adjustable-array-p array)))
|
|
t)
|
|
|
|
(deftest array.foreign-to-lisp.displaced
|
|
(let ((array (make-array 10 :initial-contents '(1 2 3 4 5 6 7 8 9 0))))
|
|
(with-foreign-array (ptr #(10 20 30 40 50) '(:array :int32 5))
|
|
(let ((displaced (foreign-array-to-lisp ptr '(:array :int32 5)
|
|
:displaced-to array
|
|
:displaced-index-offset 5)))
|
|
array)))
|
|
#(1 2 3 4 5 10 20 30 40 50))
|
|
|
|
;;; Implementation detail: 15.1.2.2 of the CL standard states that the only
|
|
;;; truly portable array specializations are for bits (bit-vectors) and
|
|
;;; characters (strings). Since char-codes are implementation-dependent, it
|
|
;;; would be tricky to write a portable test for them without generating
|
|
;;; characters at runtime. So, for a truly portable test, we are only left with
|
|
;;; bits, which are luckily numeric, and equal to (UNSIGNED-BYTE 1).
|
|
;;; This is why the below test is so terribly wasteful, spending a whole byte
|
|
;;; for a single bit - CFFI has no capabilities for dealing with single bits,
|
|
;;; and this test is only meant to check correctness of the :ELEMENT-TYPE
|
|
;;; argument to MAKE-ARRAY. In actual use cases of specialized
|
|
;;; FOREIGN-ARRAY-TO-LISP, capable implementations will be able to make
|
|
;;; specialized arrays of types that are commonly optimized for and/or
|
|
;;; representable in hardware, such as (UNSIGNED-BYTE 8) on x86 architectures.
|
|
(deftest array.foreign-to-lisp.specialized
|
|
(with-foreign-array (ptr #(1 0 1 0 1 1 1 0) '(:array :int8 8))
|
|
(foreign-array-to-lisp ptr '(:array :int8 8) :element-type 'bit))
|
|
#*10101110)
|