fc358945 |
1 | ;; Common Lisp bindings for GTK+ v2.0 |
a9bb8f02 |
2 | ;; Copyright (C) 1999-2005 Espen S. Johnsen <espen@users.sf.net> |
fc358945 |
3 | ;; |
4 | ;; This library is free software; you can redistribute it and/or |
5 | ;; modify it under the terms of the GNU Lesser General Public |
6 | ;; License as published by the Free Software Foundation; either |
7 | ;; version 2 of the License, or (at your option) any later version. |
8 | ;; |
9 | ;; This library is distributed in the hope that it will be useful, |
10 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of |
11 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
12 | ;; Lesser General Public License for more details. |
13 | ;; |
14 | ;; You should have received a copy of the GNU Lesser General Public |
15 | ;; License along with this library; if not, write to the Free Software |
16 | ;; Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
17 | |
a9bb8f02 |
18 | ;; $Id: ffi.lisp,v 1.19 2005/04/17 21:49:19 espen Exp $ |
fc358945 |
19 | |
20 | (in-package "GLIB") |
21 | |
fc358945 |
22 | |
23 | ;;;; Foreign function call interface |
24 | |
25 | (defvar *package-prefix* nil) |
26 | |
27 | (defun set-package-prefix (prefix &optional (package *package*)) |
28 | (let ((package (find-package package))) |
29 | (delete-if #'(lambda (assoc) (eq (car assoc) package)) *package-prefix*) |
30 | (push (cons package prefix) *package-prefix*)) |
31 | prefix) |
32 | |
33 | (defun package-prefix (&optional (package *package*)) |
34 | (let ((package (find-package package))) |
35 | (or |
36 | (cdr (assoc package *package-prefix*)) |
37 | (substitute #\_ #\- (string-downcase (package-name package)))))) |
38 | |
39 | (defun find-prefix-package (prefix) |
40 | (or |
41 | (car (rassoc (string-downcase prefix) *package-prefix* :test #'string=)) |
42 | (find-package (string-upcase prefix)))) |
43 | |
44 | (defmacro use-prefix (prefix &optional (package *package*)) |
45 | `(eval-when (:compile-toplevel :load-toplevel :execute) |
46 | (set-package-prefix ,prefix ,package))) |
47 | |
48 | |
49 | (defun default-alien-fname (lisp-name) |
58ddfaac |
50 | (let* ((name (substitute #\_ #\- (string-downcase lisp-name))) |
51 | (stripped-name |
52 | (cond |
53 | ((and |
54 | (char= (char name 0) #\%) |
55 | (string= "_p" name :start2 (- (length name) 2))) |
56 | (subseq name 1 (- (length name) 2))) |
57 | ((char= (char name 0) #\%) |
58 | (subseq name 1)) |
59 | ((string= "_p" name :start2 (- (length name) 2)) |
60 | (subseq name 0 (- (length name) 2))) |
61 | (name))) |
62 | (prefix (package-prefix *package*))) |
fc358945 |
63 | (if (or (not prefix) (string= prefix "")) |
58ddfaac |
64 | stripped-name |
65 | (format nil "~A_~A" prefix stripped-name)))) |
fc358945 |
66 | |
67 | (defun default-alien-type-name (type-name) |
68 | (let ((prefix (package-prefix *package*))) |
69 | (apply |
70 | #'concatenate |
71 | 'string |
72 | (mapcar |
73 | #'string-capitalize |
74 | (cons prefix (split-string (symbol-name type-name) #\-)))))) |
75 | |
76 | (defun default-type-name (alien-name) |
77 | (let ((parts |
78 | (mapcar |
79 | #'string-upcase |
80 | (split-string-if alien-name #'upper-case-p)))) |
81 | (intern |
82 | (concatenate-strings |
83 | (rest parts) #\-) (find-prefix-package (first parts))))) |
84 | |
85 | |
6baf860c |
86 | (defmacro defbinding (name lambda-list return-type &rest docs/args) |
fc358945 |
87 | (multiple-value-bind (lisp-name c-name) |
88 | (if (atom name) |
89 | (values name (default-alien-fname name)) |
90 | (values-list name)) |
91 | |
92 | (let ((supplied-lambda-list lambda-list) |
93 | (docs nil) |
94 | (args nil)) |
95 | (dolist (doc/arg docs/args) |
96 | (if (stringp doc/arg) |
97 | (push doc/arg docs) |
98 | (progn |
99 | (destructuring-bind (expr type &optional (style :in)) doc/arg |
6cb19a68 |
100 | (unless (member style '(:in :out :in-out :return)) |
fc358945 |
101 | (error "Bogus argument style ~S in ~S." style doc/arg)) |
102 | (when (and |
103 | (not supplied-lambda-list) |
6cb19a68 |
104 | (namep expr) (member style '(:in :in-out :return))) |
fc358945 |
105 | (push expr lambda-list)) |
e37c4285 |
106 | (push (list (cond |
107 | ((and (namep expr) (eq style :out)) expr) |
108 | ((namep expr) (make-symbol (string expr))) |
109 | ((gensym))) |
110 | expr (mklist type) style) args))))) |
fc358945 |
111 | |
112 | (%defbinding |
113 | c-name lisp-name (or supplied-lambda-list (nreverse lambda-list)) |
6baf860c |
114 | return-type (reverse docs) (reverse args))))) |
fc358945 |
115 | |
3d36c5d6 |
116 | #+(or cmu sbcl) |
6baf860c |
117 | (defun %defbinding (foreign-name lisp-name lambda-list return-type docs args) |
3d36c5d6 |
118 | (collect ((alien-types) (alien-bindings) (alien-parameters) |
119 | (return-values) (cleanup-forms)) |
fc358945 |
120 | (dolist (arg args) |
6baf860c |
121 | (destructuring-bind (var expr type style) arg |
122 | (let ((declaration (alien-type type)) |
123 | (cleanup (cleanup-form var type))) |
124 | |
fc358945 |
125 | (cond |
6cb19a68 |
126 | ((member style '(:out :in-out)) |
127 | (alien-types `(* ,declaration)) |
128 | (alien-parameters `(addr ,var)) |
129 | (alien-bindings |
130 | `(,var ,declaration |
4eac8484 |
131 | ,@(cond |
132 | ((eq style :in-out) (list (to-alien-form expr type))) |
133 | ((eq declaration 'system-area-pointer) |
134 | (list '(make-pointer 0)))))) |
6cb19a68 |
135 | (return-values (from-alien-form var type))) |
136 | ((eq style :return) |
137 | (alien-types declaration) |
138 | (alien-bindings |
139 | `(,var ,declaration ,(to-alien-form expr type))) |
140 | (alien-parameters var) |
141 | (return-values (from-alien-form var type))) |
142 | (cleanup |
143 | (alien-types declaration) |
144 | (alien-bindings |
145 | `(,var ,declaration ,(to-alien-form expr type))) |
146 | (alien-parameters var) |
147 | (cleanup-forms cleanup)) |
148 | (t |
149 | (alien-types declaration) |
150 | (alien-parameters (to-alien-form expr type))))))) |
fc358945 |
151 | |
152 | (let* ((alien-name (make-symbol (string lisp-name))) |
153 | (alien-funcall `(alien-funcall ,alien-name ,@(alien-parameters)))) |
154 | `(defun ,lisp-name ,lambda-list |
155 | ,@docs |
3d36c5d6 |
156 | #+cmu(declare (optimize (inhibit-warnings 3))) |
157 | #+sbcl(declare (muffle-conditions compiler-note)) |
fc358945 |
158 | (with-alien ((,alien-name |
159 | (function |
6baf860c |
160 | ,(alien-type return-type) |
fc358945 |
161 | ,@(alien-types)) |
162 | :extern ,foreign-name) |
163 | ,@(alien-bindings)) |
6baf860c |
164 | ,(if return-type |
165 | `(values |
166 | (unwind-protect |
167 | ,(from-alien-form alien-funcall return-type) |
168 | ,@(cleanup-forms)) |
6cb19a68 |
169 | ,@(return-values)) |
fc358945 |
170 | `(progn |
6baf860c |
171 | (unwind-protect |
172 | ,alien-funcall |
173 | ,@(cleanup-forms)) |
6cb19a68 |
174 | (values ,@(return-values))))))))) |
fc358945 |
175 | |
176 | |
6baf860c |
177 | ;;; Creates bindings at runtime |
fc358945 |
178 | (defun mkbinding (name return-type &rest arg-types) |
3d36c5d6 |
179 | #+cmu(declare (optimize (inhibit-warnings 3))) |
180 | #+sbcl(declare (muffle-conditions compiler-note)) |
6baf860c |
181 | (let* ((ftype |
182 | `(function ,@(mapcar #'alien-type (cons return-type arg-types)))) |
fc358945 |
183 | (alien |
3d36c5d6 |
184 | (%heap-alien |
185 | (make-heap-alien-info |
186 | :type (parse-alien-type ftype #+sbcl nil) |
187 | :sap-form (foreign-symbol-address name)))) |
6baf860c |
188 | (translate-arguments (mapcar #'to-alien-function arg-types)) |
189 | (translate-return-value (from-alien-function return-type)) |
190 | (cleanup-arguments (mapcar #'cleanup-function arg-types))) |
191 | |
fc358945 |
192 | #'(lambda (&rest args) |
193 | (map-into args #'funcall translate-arguments args) |
194 | (prog1 |
6baf860c |
195 | (funcall translate-return-value |
3d36c5d6 |
196 | (apply #'alien-funcall alien args)) |
fc358945 |
197 | (mapc #'funcall cleanup-arguments args))))) |
198 | |
7bde5a67 |
199 | |
200 | (defmacro defcallback (name (return-type &rest args) &body body) |
3d36c5d6 |
201 | (let ((def-callback #+cmu'alien:def-callback |
202 | #+sbcl'sb-alien:define-alien-function)) |
203 | `(,def-callback ,name |
204 | (,(alien-type return-type) |
205 | ,@(mapcar #'(lambda (arg) |
206 | (destructuring-bind (name type) arg |
207 | `(,name ,(alien-type type)))) |
208 | args)) |
209 | ,(to-alien-form |
7aa45361 |
210 | `(let (,@(delete nil |
211 | (mapcar #'(lambda (arg) |
212 | (destructuring-bind (name type) arg |
213 | (let ((from-alien |
214 | (from-alien-form name type))) |
215 | (unless (eq name from-alien) |
216 | `(,name ,from-alien))))) |
217 | args))) |
3d36c5d6 |
218 | ,@body) |
219 | return-type)))) |
220 | |
221 | #+sbcl |
222 | (defun callback (af) |
223 | (sb-alien:alien-function-sap af)) |
7bde5a67 |
224 | |
7aa45361 |
225 | #+sbcl |
226 | (deftype callback () 'sb-alien:alien-function) |
fc358945 |
227 | |
228 | ;;;; Definitons and translations of fundamental types |
229 | |
6baf860c |
230 | (defmacro def-type-method (name args &optional documentation) |
231 | `(progn |
232 | (defgeneric ,name (,@args type &rest args) |
233 | ,@(when documentation `((:documentation ,documentation)))) |
234 | (defmethod ,name (,@args (type symbol) &rest args) |
235 | (let ((class (find-class type nil))) |
236 | (if class |
237 | (apply #',name ,@args class args) |
238 | (multiple-value-bind (super-type expanded-p) |
239 | (type-expand-1 (cons type args)) |
240 | (if expanded-p |
241 | (,name ,@args super-type) |
242 | (call-next-method)))))) |
243 | (defmethod ,name (,@args (type cons) &rest args) |
244 | (declare (ignore args)) |
245 | (apply #',name ,@args (first type) (rest type))))) |
246 | |
fc358945 |
247 | |
6baf860c |
248 | (def-type-method alien-type ()) |
249 | (def-type-method size-of ()) |
250 | (def-type-method to-alien-form (form)) |
251 | (def-type-method from-alien-form (form)) |
252 | (def-type-method cleanup-form (form) |
253 | "Creates a form to clean up after the alien call has finished.") |
fc358945 |
254 | |
6baf860c |
255 | (def-type-method to-alien-function ()) |
256 | (def-type-method from-alien-function ()) |
257 | (def-type-method cleanup-function ()) |
fc358945 |
258 | |
508d13a7 |
259 | (def-type-method copy-to-alien-form (form)) |
260 | (def-type-method copy-to-alien-function ()) |
261 | (def-type-method copy-from-alien-form (form)) |
262 | (def-type-method copy-from-alien-function ()) |
263 | |
6baf860c |
264 | (def-type-method writer-function ()) |
265 | (def-type-method reader-function ()) |
266 | (def-type-method destroy-function ()) |
fc358945 |
267 | |
b6bf802c |
268 | (def-type-method unbound-value () |
269 | "First return value is true if the type has an unbound value, second return value is the actual unbound value") |
270 | |
fc358945 |
271 | |
7bde5a67 |
272 | ;; Sizes of fundamental C types in bytes (8 bits) |
273 | (defconstant +size-of-short+ 2) |
274 | (defconstant +size-of-int+ 4) |
275 | (defconstant +size-of-long+ 4) |
276 | (defconstant +size-of-pointer+ 4) |
277 | (defconstant +size-of-float+ 4) |
278 | (defconstant +size-of-double+ 8) |
279 | |
280 | ;; Sizes of fundamental C types in bits |
281 | (defconstant +bits-of-byte+ 8) |
282 | (defconstant +bits-of-short+ 16) |
283 | (defconstant +bits-of-int+ 32) |
284 | (defconstant +bits-of-long+ 32) |
285 | |
286 | |
6baf860c |
287 | (deftype int () '(signed-byte #.+bits-of-int+)) |
288 | (deftype unsigned-int () '(unsigned-byte #.+bits-of-int+)) |
289 | (deftype long () '(signed-byte #.+bits-of-long+)) |
290 | (deftype unsigned-long () '(unsigned-byte #.+bits-of-long+)) |
291 | (deftype short () '(signed-byte #.+bits-of-short+)) |
292 | (deftype unsigned-short () '(unsigned-byte #.+bits-of-short+)) |
293 | (deftype signed (&optional (size '*)) `(signed-byte ,size)) |
294 | (deftype unsigned (&optional (size '*)) `(unsigned-byte ,size)) |
295 | (deftype char () 'base-char) |
296 | (deftype pointer () 'system-area-pointer) |
297 | (deftype boolean (&optional (size '*)) (declare (ignore size)) `(member t nil)) |
298 | ;(deftype invalid () nil) |
fc358945 |
299 | |
300 | |
6baf860c |
301 | (defmethod to-alien-form (form (type t) &rest args) |
302 | (declare (ignore type args)) |
303 | form) |
fc358945 |
304 | |
6baf860c |
305 | (defmethod to-alien-function ((type t) &rest args) |
306 | (declare (ignore type args)) |
307 | #'identity) |
fc358945 |
308 | |
6baf860c |
309 | (defmethod from-alien-form (form (type t) &rest args) |
310 | (declare (ignore type args)) |
311 | form) |
fc358945 |
312 | |
6baf860c |
313 | (defmethod from-alien-function ((type t) &rest args) |
314 | (declare (ignore type args)) |
315 | #'identity) |
316 | |
317 | (defmethod cleanup-form (form (type t) &rest args) |
318 | (declare (ignore form type args)) |
319 | nil) |
fc358945 |
320 | |
6baf860c |
321 | (defmethod cleanup-function ((type t) &rest args) |
322 | (declare (ignore type args)) |
323 | #'identity) |
324 | |
325 | (defmethod destroy-function ((type t) &rest args) |
326 | (declare (ignore type args)) |
4c795125 |
327 | #'(lambda (location &optional offset) |
6baf860c |
328 | (declare (ignore location offset)))) |
329 | |
508d13a7 |
330 | (defmethod copy-to-alien-form (form (type t) &rest args) |
331 | (apply #'to-alien-form form type args)) |
332 | |
333 | (defmethod copy-to-alien-function ((type t) &rest args) |
334 | (apply #'to-alien-function type args)) |
335 | |
336 | (defmethod copy-from-alien-form (form (type t) &rest args) |
337 | (apply #'from-alien-form form type args)) |
338 | |
339 | (defmethod copy-from-alien-function ((type t) &rest args) |
340 | (apply #'from-alien-function type args)) |
341 | |
6baf860c |
342 | |
343 | (defmethod alien-type ((type (eql 'signed-byte)) &rest args) |
344 | (declare (ignore type)) |
345 | (destructuring-bind (&optional (size '*)) args |
346 | (ecase size |
3d36c5d6 |
347 | (#.+bits-of-byte+ #+cmu'(alien:signed 8) #+sbcl'(sb-alien:signed 8)) |
348 | (#.+bits-of-short+ #+cmu 'c-call:short #+sbcl 'sb-alien:short) |
349 | ((* #.+bits-of-int+) #+cmu 'c-call:int #+sbcl 'sb-alien:int) |
350 | (#.+bits-of-long+ #+cmu 'c-call:long #+sbcl 'sb-alien:long)))) |
6baf860c |
351 | |
352 | (defmethod size-of ((type (eql 'signed-byte)) &rest args) |
353 | (declare (ignore type)) |
354 | (destructuring-bind (&optional (size '*)) args |
355 | (ecase size |
356 | (#.+bits-of-byte+ 1) |
357 | (#.+bits-of-short+ +size-of-short+) |
358 | ((* #.+bits-of-int+) +size-of-int+) |
359 | (#.+bits-of-long+ +size-of-long+)))) |
360 | |
b6bf802c |
361 | (defmethod unbound-value ((type t) &rest args) |
362 | (declare (ignore type args)) |
363 | nil) |
364 | |
6baf860c |
365 | (defmethod writer-function ((type (eql 'signed-byte)) &rest args) |
366 | (declare (ignore type)) |
367 | (destructuring-bind (&optional (size '*)) args |
368 | (let ((size (if (eq size '*) +bits-of-int+ size))) |
369 | (ecase size |
370 | (8 #'(lambda (value location &optional (offset 0)) |
371 | (setf (signed-sap-ref-8 location offset) value))) |
372 | (16 #'(lambda (value location &optional (offset 0)) |
373 | (setf (signed-sap-ref-16 location offset) value))) |
374 | (32 #'(lambda (value location &optional (offset 0)) |
375 | (setf (signed-sap-ref-32 location offset) value))) |
376 | (64 #'(lambda (value location &optional (offset 0)) |
377 | (setf (signed-sap-ref-64 location offset) value))))))) |
378 | |
379 | (defmethod reader-function ((type (eql 'signed-byte)) &rest args) |
380 | (declare (ignore type)) |
381 | (destructuring-bind (&optional (size '*)) args |
382 | (let ((size (if (eq size '*) +bits-of-int+ size))) |
383 | (ecase size |
384 | (8 #'(lambda (sap &optional (offset 0)) |
385 | (signed-sap-ref-8 sap offset))) |
386 | (16 #'(lambda (sap &optional (offset 0)) |
387 | (signed-sap-ref-16 sap offset))) |
388 | (32 #'(lambda (sap &optional (offset 0)) |
389 | (signed-sap-ref-32 sap offset))) |
390 | (64 #'(lambda (sap &optional (offset 0)) |
391 | (signed-sap-ref-64 sap offset))))))) |
392 | |
393 | (defmethod alien-type ((type (eql 'unsigned-byte)) &rest args) |
394 | (destructuring-bind (&optional (size '*)) args |
395 | (ecase size |
3d36c5d6 |
396 | (#.+bits-of-byte+ #+cmu'(alien:unsigned 8) #+sbcl'(sb-alien:unsigned 8)) |
397 | (#.+bits-of-short+ #+cmu 'c-call:unsigned-short |
398 | #+sbcl 'sb-alien:unsigned-short) |
399 | ((* #.+bits-of-int+) #+cmu 'c-call:unsigned-int |
400 | #+sbcl 'sb-alien:unsigned-int) |
401 | (#.+bits-of-long+ #+cmu 'c-call:unsigned-long |
402 | #+sbcl 'sb-alien:unsigned-long)))) |
6baf860c |
403 | |
404 | (defmethod size-of ((type (eql 'unsigned-byte)) &rest args) |
405 | (apply #'size-of 'signed args)) |
406 | |
407 | (defmethod writer-function ((type (eql 'unsigned-byte)) &rest args) |
408 | (declare (ignore type)) |
409 | (destructuring-bind (&optional (size '*)) args |
410 | (let ((size (if (eq size '*) +bits-of-int+ size))) |
411 | (ecase size |
412 | (8 #'(lambda (value location &optional (offset 0)) |
413 | (setf (sap-ref-8 location offset) value))) |
414 | (16 #'(lambda (value location &optional (offset 0)) |
415 | (setf (sap-ref-16 location offset) value))) |
416 | (32 #'(lambda (value location &optional (offset 0)) |
417 | (setf (sap-ref-32 location offset) value))) |
418 | (64 #'(lambda (value location &optional (offset 0)) |
419 | (setf (sap-ref-64 location offset) value))))))) |
420 | |
421 | (defmethod reader-function ((type (eql 'unsigned-byte)) &rest args) |
422 | (declare (ignore type)) |
423 | (destructuring-bind (&optional (size '*)) args |
424 | (let ((size (if (eq size '*) +bits-of-int+ size))) |
425 | (ecase size |
426 | (8 #'(lambda (sap &optional (offset 0)) |
427 | (sap-ref-8 sap offset))) |
428 | (16 #'(lambda (sap &optional (offset 0)) |
429 | (sap-ref-16 sap offset))) |
430 | (32 #'(lambda (sap &optional (offset 0)) |
431 | (sap-ref-32 sap offset))) |
432 | (64 #'(lambda (sap &optional (offset 0)) |
433 | (sap-ref-64 sap offset))))))) |
434 | |
435 | |
436 | (defmethod alien-type ((type (eql 'integer)) &rest args) |
437 | (declare (ignore type args)) |
438 | (alien-type 'signed-byte)) |
fc358945 |
439 | |
6baf860c |
440 | (defmethod size-of ((type (eql 'integer)) &rest args) |
441 | (declare (ignore type args)) |
442 | (size-of 'signed-byte)) |
fc358945 |
443 | |
42c6b247 |
444 | (defmethod writer-function ((type (eql 'integer)) &rest args) |
445 | (declare (ignore type args)) |
446 | (writer-function 'signed-byte)) |
447 | |
448 | (defmethod reader-function ((type (eql 'integer)) &rest args) |
449 | (declare (ignore type args)) |
450 | (reader-function 'signed-byte)) |
451 | |
fc358945 |
452 | |
6baf860c |
453 | (defmethod alien-type ((type (eql 'fixnum)) &rest args) |
454 | (declare (ignore type args)) |
455 | (alien-type 'signed-byte)) |
fc358945 |
456 | |
6baf860c |
457 | (defmethod size-of ((type (eql 'fixnum)) &rest args) |
458 | (declare (ignore type args)) |
459 | (size-of 'signed-byte)) |
fc358945 |
460 | |
461 | |
6baf860c |
462 | (defmethod alien-type ((type (eql 'single-float)) &rest args) |
463 | (declare (ignore type args)) |
3d36c5d6 |
464 | #+cmu 'alien:single-float #+sbcl 'sb-alien:single-float) |
fc358945 |
465 | |
6baf860c |
466 | (defmethod size-of ((type (eql 'single-float)) &rest args) |
467 | (declare (ignore type args)) |
fc358945 |
468 | +size-of-float+) |
469 | |
472e1aae |
470 | (defmethod to-alien-form (form (type (eql 'single-float)) &rest args) |
471 | (declare (ignore type args)) |
472 | `(coerce ,form 'single-float)) |
473 | |
474 | (defmethod to-alien-function ((type (eql 'single-float)) &rest args) |
475 | (declare (ignore type args)) |
476 | #'(lambda (number) |
477 | (coerce number 'single-float))) |
478 | |
6baf860c |
479 | (defmethod writer-function ((type (eql 'single-float)) &rest args) |
480 | (declare (ignore type args)) |
481 | #'(lambda (value location &optional (offset 0)) |
7bde5a67 |
482 | (setf (sap-ref-single location offset) (coerce value 'single-float)))) |
fc358945 |
483 | |
6baf860c |
484 | (defmethod reader-function ((type (eql 'single-float)) &rest args) |
485 | (declare (ignore type args)) |
486 | #'(lambda (sap &optional (offset 0)) |
487 | (sap-ref-single sap offset))) |
fc358945 |
488 | |
489 | |
6baf860c |
490 | (defmethod alien-type ((type (eql 'double-float)) &rest args) |
491 | (declare (ignore type args)) |
3d36c5d6 |
492 | #+cmu 'alien:double-float #+sbcl 'sb-alien:double-float) |
fc358945 |
493 | |
6baf860c |
494 | (defmethod size-of ((type (eql 'double-float)) &rest args) |
495 | (declare (ignore type args)) |
5b50f177 |
496 | +size-of-double+) |
fc358945 |
497 | |
472e1aae |
498 | (defmethod to-alien-form (form (type (eql 'double-float)) &rest args) |
499 | (declare (ignore type args)) |
500 | `(coerce ,form 'double-float)) |
501 | |
502 | (defmethod to-alien-function ((type (eql 'double-float)) &rest args) |
503 | (declare (ignore type args)) |
504 | #'(lambda (number) |
505 | (coerce number 'double-float))) |
506 | |
6baf860c |
507 | (defmethod writer-function ((type (eql 'double-float)) &rest args) |
508 | (declare (ignore type args)) |
509 | #'(lambda (value location &optional (offset 0)) |
510 | (setf (sap-ref-double location offset) (coerce value 'double-float)))) |
fc358945 |
511 | |
6baf860c |
512 | (defmethod reader-function ((type (eql 'double-float)) &rest args) |
513 | (declare (ignore type args)) |
514 | #'(lambda (sap &optional (offset 0)) |
515 | (sap-ref-double sap offset))) |
fc358945 |
516 | |
517 | |
6baf860c |
518 | (defmethod alien-type ((type (eql 'base-char)) &rest args) |
519 | (declare (ignore type args)) |
3d36c5d6 |
520 | #+cmu 'c-call:char #+sbcl 'sb-alien:char) |
fc358945 |
521 | |
6baf860c |
522 | (defmethod size-of ((type (eql 'base-char)) &rest args) |
523 | (declare (ignore type args)) |
fc358945 |
524 | 1) |
525 | |
6baf860c |
526 | (defmethod writer-function ((type (eql 'base-char)) &rest args) |
527 | (declare (ignore type args)) |
528 | #'(lambda (char location &optional (offset 0)) |
529 | (setf (sap-ref-8 location offset) (char-code char)))) |
fc358945 |
530 | |
6baf860c |
531 | (defmethod reader-function ((type (eql 'base-char)) &rest args) |
532 | (declare (ignore type args)) |
533 | #'(lambda (location &optional (offset 0)) |
534 | (code-char (sap-ref-8 location offset)))) |
fc358945 |
535 | |
536 | |
6baf860c |
537 | (defmethod alien-type ((type (eql 'string)) &rest args) |
538 | (declare (ignore type args)) |
539 | (alien-type 'pointer)) |
fc358945 |
540 | |
6baf860c |
541 | (defmethod size-of ((type (eql 'string)) &rest args) |
542 | (declare (ignore type args)) |
543 | (size-of 'pointer)) |
fc358945 |
544 | |
6baf860c |
545 | (defmethod to-alien-form (string (type (eql 'string)) &rest args) |
546 | (declare (ignore type args)) |
fc358945 |
547 | `(let ((string ,string)) |
548 | ;; Always copy strings to prevent seg fault due to GC |
a9bb8f02 |
549 | #+cmu |
fc358945 |
550 | (copy-memory |
3d36c5d6 |
551 | (vector-sap (coerce string 'simple-base-string)) |
a9bb8f02 |
552 | (1+ (length string))) |
553 | #+sbcl |
554 | (let ((utf8 (%deport-utf8-string string))) |
555 | (copy-memory (vector-sap utf8) (length utf8))))) |
fc358945 |
556 | |
6baf860c |
557 | (defmethod to-alien-function ((type (eql 'string)) &rest args) |
558 | (declare (ignore type args)) |
559 | #'(lambda (string) |
a9bb8f02 |
560 | #+cmu |
6baf860c |
561 | (copy-memory |
3d36c5d6 |
562 | (vector-sap (coerce string 'simple-base-string)) |
a9bb8f02 |
563 | (1+ (length string))) |
564 | #+sbcl |
565 | (let ((utf8 (%deport-utf8-string string))) |
566 | (copy-memory (vector-sap utf8) (length utf8))))) |
6baf860c |
567 | |
568 | (defmethod from-alien-form (string (type (eql 'string)) &rest args) |
569 | (declare (ignore type args)) |
570 | `(let ((string ,string)) |
571 | (unless (null-pointer-p string) |
508d13a7 |
572 | (prog1 |
a9bb8f02 |
573 | #+cmu(%naturalize-c-string string) |
574 | #+sbcl(%naturalize-utf8-string string) |
508d13a7 |
575 | (deallocate-memory string))))) |
fc358945 |
576 | |
6baf860c |
577 | (defmethod from-alien-function ((type (eql 'string)) &rest args) |
578 | (declare (ignore type args)) |
579 | #'(lambda (string) |
580 | (unless (null-pointer-p string) |
508d13a7 |
581 | (prog1 |
a9bb8f02 |
582 | #+cmu(%naturalize-c-string string) |
583 | #+sbcl(%naturalize-utf8-string string) |
508d13a7 |
584 | (deallocate-memory string))))) |
fc358945 |
585 | |
6baf860c |
586 | (defmethod cleanup-form (string (type (eql 'string)) &rest args) |
587 | (declare (ignore type args)) |
588 | `(let ((string ,string)) |
589 | (unless (null-pointer-p string) |
590 | (deallocate-memory string)))) |
591 | |
592 | (defmethod cleanup-function ((type (eql 'string)) &rest args) |
7bde5a67 |
593 | (declare (ignore args)) |
6baf860c |
594 | #'(lambda (string) |
595 | (unless (null-pointer-p string) |
596 | (deallocate-memory string)))) |
597 | |
508d13a7 |
598 | (defmethod copy-from-alien-form (string (type (eql 'string)) &rest args) |
599 | (declare (ignore type args)) |
600 | `(let ((string ,string)) |
601 | (unless (null-pointer-p string) |
a9bb8f02 |
602 | #+cmu(%naturalize-c-string string) |
603 | #+sbcl(%naturalize-utf8-string string)))) |
508d13a7 |
604 | |
605 | (defmethod copy-from-alien-function ((type (eql 'string)) &rest args) |
606 | (declare (ignore type args)) |
607 | #'(lambda (string) |
608 | (unless (null-pointer-p string) |
a9bb8f02 |
609 | #+cmu(%naturalize-c-string string) |
610 | #+sbcl(%naturalize-utf8-string string)))) |
508d13a7 |
611 | |
6baf860c |
612 | (defmethod writer-function ((type (eql 'string)) &rest args) |
613 | (declare (ignore type args)) |
614 | #'(lambda (string location &optional (offset 0)) |
615 | (assert (null-pointer-p (sap-ref-sap location offset))) |
616 | (setf (sap-ref-sap location offset) |
a9bb8f02 |
617 | #+cmu |
6baf860c |
618 | (copy-memory |
3d36c5d6 |
619 | (vector-sap (coerce string 'simple-base-string)) |
a9bb8f02 |
620 | (1+ (length string))) |
621 | #+sbcl |
622 | (let ((utf8 (%deport-utf8-string string))) |
623 | (copy-memory (vector-sap utf8) (length utf8)))))) |
6baf860c |
624 | |
625 | (defmethod reader-function ((type (eql 'string)) &rest args) |
626 | (declare (ignore type args)) |
627 | #'(lambda (location &optional (offset 0)) |
628 | (unless (null-pointer-p (sap-ref-sap location offset)) |
a9bb8f02 |
629 | #+cmu(%naturalize-c-string (sap-ref-sap location offset)) |
630 | #+sbcl(%naturalize-utf8-string (sap-ref-sap location offset))))) |
6baf860c |
631 | |
632 | (defmethod destroy-function ((type (eql 'string)) &rest args) |
633 | (declare (ignore type args)) |
634 | #'(lambda (location &optional (offset 0)) |
635 | (unless (null-pointer-p (sap-ref-sap location offset)) |
636 | (deallocate-memory (sap-ref-sap location offset)) |
637 | (setf (sap-ref-sap location offset) (make-pointer 0))))) |
638 | |
b6bf802c |
639 | (defmethod unbound-value ((type (eql 'string)) &rest args) |
640 | (declare (ignore type args)) |
641 | (values t nil)) |
6baf860c |
642 | |
a9bb8f02 |
643 | |
6baf860c |
644 | (defmethod alien-type ((type (eql 'pathname)) &rest args) |
645 | (declare (ignore type args)) |
646 | (alien-type 'string)) |
647 | |
648 | (defmethod size-of ((type (eql 'pathname)) &rest args) |
649 | (declare (ignore type args)) |
650 | (size-of 'string)) |
fc358945 |
651 | |
6baf860c |
652 | (defmethod to-alien-form (path (type (eql 'pathname)) &rest args) |
653 | (declare (ignore type args)) |
654 | (to-alien-form `(namestring (translate-logical-pathname ,path)) 'string)) |
655 | |
656 | (defmethod to-alien-function ((type (eql 'pathname)) &rest args) |
657 | (declare (ignore type args)) |
658 | (let ((string-function (to-alien-function 'string))) |
659 | #'(lambda (path) |
660 | (funcall string-function (namestring path))))) |
661 | |
662 | (defmethod from-alien-form (string (type (eql 'pathname)) &rest args) |
663 | (declare (ignore type args)) |
664 | `(parse-namestring ,(from-alien-form string 'string))) |
665 | |
666 | (defmethod from-alien-function ((type (eql 'pathname)) &rest args) |
667 | (declare (ignore type args)) |
668 | (let ((string-function (from-alien-function 'string))) |
669 | #'(lambda (string) |
670 | (parse-namestring (funcall string-function string))))) |
671 | |
672 | (defmethod cleanup-form (string (type (eql 'pathnanme)) &rest args) |
673 | (declare (ignore type args)) |
674 | (cleanup-form string 'string)) |
675 | |
676 | (defmethod cleanup-function ((type (eql 'pathnanme)) &rest args) |
677 | (declare (ignore type args)) |
678 | (cleanup-function 'string)) |
679 | |
680 | (defmethod writer-function ((type (eql 'pathname)) &rest args) |
681 | (declare (ignore type args)) |
682 | (let ((string-writer (writer-function 'string))) |
683 | #'(lambda (path location &optional (offset 0)) |
684 | (funcall string-writer (namestring path) location offset)))) |
685 | |
686 | (defmethod reader-function ((type (eql 'pathname)) &rest args) |
687 | (declare (ignore type args)) |
688 | (let ((string-reader (reader-function 'string))) |
689 | #'(lambda (location &optional (offset 0)) |
690 | (let ((string (funcall string-reader location offset))) |
691 | (when string |
692 | (parse-namestring string)))))) |
693 | |
694 | (defmethod destroy-function ((type (eql 'pathname)) &rest args) |
695 | (declare (ignore type args)) |
696 | (destroy-function 'string)) |
697 | |
b6bf802c |
698 | (defmethod unbound-value ((type (eql 'pathname)) &rest args) |
699 | (declare (ignore type args)) |
700 | (unbound-value 'string)) |
701 | |
6baf860c |
702 | |
703 | (defmethod alien-type ((type (eql 'boolean)) &rest args) |
704 | (apply #'alien-type 'signed-byte args)) |
705 | |
706 | (defmethod size-of ((type (eql 'boolean)) &rest args) |
707 | (apply #'size-of 'signed-byte args)) |
708 | |
709 | (defmethod to-alien-form (boolean (type (eql 'boolean)) &rest args) |
710 | (declare (ignore type args)) |
fc358945 |
711 | `(if ,boolean 1 0)) |
712 | |
6baf860c |
713 | (defmethod to-alien-function ((type (eql 'boolean)) &rest args) |
714 | (declare (ignore type args)) |
715 | #'(lambda (boolean) |
716 | (if boolean 1 0))) |
717 | |
718 | (defmethod from-alien-form (boolean (type (eql 'boolean)) &rest args) |
719 | (declare (ignore type args)) |
720 | `(not (zerop ,boolean))) |
721 | |
722 | (defmethod from-alien-function ((type (eql 'boolean)) &rest args) |
723 | (declare (ignore type args)) |
724 | #'(lambda (boolean) |
725 | (not (zerop boolean)))) |
726 | |
727 | (defmethod writer-function ((type (eql 'boolean)) &rest args) |
728 | (declare (ignore type)) |
729 | (let ((writer (apply #'writer-function 'signed-byte args))) |
730 | #'(lambda (boolean location &optional (offset 0)) |
731 | (funcall writer (if boolean 1 0) location offset)))) |
732 | |
733 | (defmethod reader-function ((type (eql 'boolean)) &rest args) |
734 | (declare (ignore type)) |
735 | (let ((reader (apply #'reader-function 'signed-byte args))) |
736 | #'(lambda (location &optional (offset 0)) |
737 | (not (zerop (funcall reader location offset)))))) |
738 | |
739 | |
740 | (defmethod alien-type ((type (eql 'or)) &rest args) |
741 | (let ((alien-type (alien-type (first args)))) |
742 | (unless (every #'(lambda (type) |
743 | (eq alien-type (alien-type type))) |
744 | (rest args)) |
745 | (error "No common alien type specifier for union type: ~A" |
746 | (cons type args))) |
fc358945 |
747 | alien-type)) |
748 | |
6baf860c |
749 | (defmethod size-of ((type (eql 'or)) &rest args) |
750 | (declare (ignore type)) |
751 | (size-of (first args))) |
752 | |
753 | (defmethod to-alien-form (form (type (eql 'or)) &rest args) |
754 | (declare (ignore type)) |
755 | `(let ((value ,form)) |
756 | (etypecase value |
757 | ,@(mapcar |
758 | #'(lambda (type) |
759 | `(,type ,(to-alien-form 'value type))) |
760 | args)))) |
761 | |
762 | (defmethod to-alien-function ((type (eql 'or)) &rest types) |
763 | (declare (ignore type)) |
764 | (let ((functions (mapcar #'to-alien-function types))) |
765 | #'(lambda (value) |
766 | (loop |
767 | for function in functions |
768 | for type in types |
769 | when (typep value type) |
770 | do (return (funcall function value)) |
771 | finally (error "~S is not of type ~A" value `(or ,@types)))))) |
772 | |
773 | (defmethod alien-type ((type (eql 'system-area-pointer)) &rest args) |
774 | (declare (ignore type args)) |
fc358945 |
775 | 'system-area-pointer) |
776 | |
6baf860c |
777 | (defmethod size-of ((type (eql 'system-area-pointer)) &rest args) |
778 | (declare (ignore type args)) |
779 | +size-of-pointer+) |
fc358945 |
780 | |
6baf860c |
781 | (defmethod writer-function ((type (eql 'system-area-pointer)) &rest args) |
782 | (declare (ignore type args)) |
783 | #'(lambda (sap location &optional (offset 0)) |
784 | (setf (sap-ref-sap location offset) sap))) |
fc358945 |
785 | |
6baf860c |
786 | (defmethod reader-function ((type (eql 'system-area-pointer)) &rest args) |
787 | (declare (ignore type args)) |
788 | #'(lambda (location &optional (offset 0)) |
789 | (sap-ref-sap location offset))) |
fc358945 |
790 | |
791 | |
6baf860c |
792 | (defmethod alien-type ((type (eql 'null)) &rest args) |
793 | (declare (ignore type args)) |
794 | (alien-type 'pointer)) |
fc358945 |
795 | |
6baf860c |
796 | (defmethod size-of ((type (eql 'null)) &rest args) |
797 | (declare (ignore type args)) |
798 | (size-of 'pointer)) |
799 | |
800 | (defmethod to-alien-form (null (type (eql 'null)) &rest args) |
801 | (declare (ignore null type args)) |
fc358945 |
802 | `(make-pointer 0)) |
803 | |
6baf860c |
804 | (defmethod to-alien-function ((type (eql 'null)) &rest args) |
805 | (declare (ignore type args)) |
806 | #'(lambda (null) |
807 | (declare (ignore null)) |
808 | (make-pointer 0))) |
fc358945 |
809 | |
fc358945 |
810 | |
6baf860c |
811 | (defmethod alien-type ((type (eql 'nil)) &rest args) |
812 | (declare (ignore type args)) |
3d36c5d6 |
813 | 'void) |
6baf860c |
814 | |
815 | (defmethod from-alien-function ((type (eql 'nil)) &rest args) |
816 | (declare (ignore type args)) |
817 | #'(lambda (value) |
818 | (declare (ignore value)) |
819 | (values))) |
508d13a7 |
820 | |
821 | |
822 | (defmethod alien-type ((type (eql 'copy-of)) &rest args) |
823 | (declare (ignore type)) |
824 | (alien-type (first args))) |
825 | |
826 | (defmethod size-of ((type (eql 'copy-of)) &rest args) |
827 | (declare (ignore type)) |
828 | (size-of (first args))) |
829 | |
830 | (defmethod to-alien-form (form (type (eql 'copy-of)) &rest args) |
831 | (declare (ignore type)) |
832 | (copy-to-alien-form form (first args))) |
833 | |
834 | (defmethod to-alien-function ((type (eql 'copy-of)) &rest args) |
835 | (declare (ignore type)) |
836 | (copy-to-alien-function (first args))) |
837 | |
838 | (defmethod from-alien-form (form (type (eql 'copy-of)) &rest args) |
839 | (declare (ignore type)) |
840 | (copy-from-alien-form form (first args))) |
841 | |
842 | (defmethod from-alien-function ((type (eql 'copy-of)) &rest args) |
843 | (declare (ignore type)) |
844 | (copy-from-alien-function (first args))) |
845 | |
4c795125 |
846 | (defmethod reader-function ((type (eql 'copy-of)) &rest args) |
847 | (declare (ignore type)) |
848 | (reader-function (first args))) |
849 | |
850 | (defmethod writer-function ((type (eql 'copy-of)) &rest args) |
851 | (declare (ignore type)) |
852 | (writer-function (first args))) |
ff8fa451 |
853 | |
854 | |
855 | (defmethod alien-type ((type (eql 'callback)) &rest args) |
856 | (declare (ignore type args)) |
857 | (alien-type 'pointer)) |
858 | |
859 | (defmethod size-of ((type (eql 'callback)) &rest args) |
860 | (declare (ignore type args)) |
861 | (size-of 'pointer)) |
862 | |
863 | (defmethod to-alien-form (callback (type (eql 'callback)) &rest args) |
864 | (declare (ignore type args)) |
865 | #+cmu `(callback ,callback) |
866 | #+sbcl `(sb-alien:alien-function-sap ,callback)) |
867 | |
868 | (defmethod to-alien-function ((type (eql 'callback)) &rest args) |
869 | (declare (ignore type args)) |
870 | #+cmu #'(lambda (callback) (callback callback)) |
871 | #+sbcl #'sb-alien:alien-function-sap) |
872 | |
873 | #+cmu |
874 | (defun find-callback (pointer) |
875 | (find pointer alien::*callbacks* :key #'callback-trampoline :test #'sap=)) |
876 | |
877 | (defmethod from-alien-form (pointer (type (eql 'callback)) &rest args) |
878 | (declare (ignore type args)) |
879 | #+cmu `(find-callback ,pointer) |
880 | #+sbcl `(sb-alien::%find-alien-function ,pointer)) |
881 | |
882 | (defmethod from-alien-function ((type (eql 'callback)) &rest args) |
883 | (declare (ignore type args)) |
884 | #+cmu #'find-callback |
885 | #+sbcl #'sb-alien::%find-alien-function) |
886 | |
887 | (defmethod writer-function ((type (eql 'callback)) &rest args) |
888 | (declare (ignore type args)) |
889 | (let ((writer (writer-function 'pointer)) |
890 | (to-alien (to-alien-function 'callback))) |
891 | #'(lambda (callback location &optional (offset 0)) |
892 | (funcall writer (funcall to-alien callback) location offset)))) |
893 | |
894 | (defmethod reader-function ((type (eql 'callback)) &rest args) |
895 | (declare (ignore type args)) |
896 | (let ((reader (reader-function 'pointer)) |
897 | (from-alien (from-alien-function 'callback))) |
898 | #'(lambda (location &optional (offset 0)) |
899 | (let ((pointer (funcall reader location offset))) |
900 | (unless (null-pointer-p pointer) |
901 | (funcall from-alien pointer)))))) |
902 | |
903 | (defmethod unbound-value ((type (eql 'callback)) &rest args) |
904 | (declare (ignore type args)) |
905 | (values t nil)) |