310da1d5 |
1 | ;; Common Lisp bindings for GTK+ v2.0 |
2 | ;; Copyright (C) 1999-2001 Espen S. Johnsen <esj@stud.cs.uit.no> |
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 | |
1ea49abf |
18 | ;; $Id: ffi.lisp,v 1.14 2005-02-14 17:49:17 espen Exp $ |
310da1d5 |
19 | |
20 | (in-package "GLIB") |
21 | |
310da1d5 |
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) |
1ff84b06 |
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*))) |
310da1d5 |
63 | (if (or (not prefix) (string= prefix "")) |
1ff84b06 |
64 | stripped-name |
65 | (format nil "~A_~A" prefix stripped-name)))) |
310da1d5 |
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 | |
9adccb27 |
86 | (defmacro defbinding (name lambda-list return-type &rest docs/args) |
310da1d5 |
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 |
3840beb2 |
100 | (unless (member style '(:in :out :in-out :return)) |
310da1d5 |
101 | (error "Bogus argument style ~S in ~S." style doc/arg)) |
102 | (when (and |
103 | (not supplied-lambda-list) |
3840beb2 |
104 | (namep expr) (member style '(:in :in-out :return))) |
310da1d5 |
105 | (push expr lambda-list)) |
7a6c048d |
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))))) |
310da1d5 |
111 | |
112 | (%defbinding |
113 | c-name lisp-name (or supplied-lambda-list (nreverse lambda-list)) |
9adccb27 |
114 | return-type (reverse docs) (reverse args))))) |
310da1d5 |
115 | |
73572c12 |
116 | #+(or cmu sbcl) |
9adccb27 |
117 | (defun %defbinding (foreign-name lisp-name lambda-list return-type docs args) |
73572c12 |
118 | (collect ((alien-types) (alien-bindings) (alien-parameters) |
119 | (return-values) (cleanup-forms)) |
310da1d5 |
120 | (dolist (arg args) |
9adccb27 |
121 | (destructuring-bind (var expr type style) arg |
122 | (let ((declaration (alien-type type)) |
123 | (cleanup (cleanup-form var type))) |
124 | |
310da1d5 |
125 | (cond |
3840beb2 |
126 | ((member style '(:out :in-out)) |
127 | (alien-types `(* ,declaration)) |
128 | (alien-parameters `(addr ,var)) |
129 | (alien-bindings |
130 | `(,var ,declaration |
1ea49abf |
131 | ,(if (eq style :in-out) |
132 | (to-alien-form expr type) |
133 | (make-pointer 0)))) |
3840beb2 |
134 | (return-values (from-alien-form var type))) |
135 | ((eq style :return) |
136 | (alien-types declaration) |
137 | (alien-bindings |
138 | `(,var ,declaration ,(to-alien-form expr type))) |
139 | (alien-parameters var) |
140 | (return-values (from-alien-form var type))) |
141 | (cleanup |
142 | (alien-types declaration) |
143 | (alien-bindings |
144 | `(,var ,declaration ,(to-alien-form expr type))) |
145 | (alien-parameters var) |
146 | (cleanup-forms cleanup)) |
147 | (t |
148 | (alien-types declaration) |
149 | (alien-parameters (to-alien-form expr type))))))) |
310da1d5 |
150 | |
151 | (let* ((alien-name (make-symbol (string lisp-name))) |
152 | (alien-funcall `(alien-funcall ,alien-name ,@(alien-parameters)))) |
153 | `(defun ,lisp-name ,lambda-list |
154 | ,@docs |
73572c12 |
155 | #+cmu(declare (optimize (inhibit-warnings 3))) |
156 | #+sbcl(declare (muffle-conditions compiler-note)) |
310da1d5 |
157 | (with-alien ((,alien-name |
158 | (function |
9adccb27 |
159 | ,(alien-type return-type) |
310da1d5 |
160 | ,@(alien-types)) |
161 | :extern ,foreign-name) |
162 | ,@(alien-bindings)) |
9adccb27 |
163 | ,(if return-type |
164 | `(values |
165 | (unwind-protect |
166 | ,(from-alien-form alien-funcall return-type) |
167 | ,@(cleanup-forms)) |
3840beb2 |
168 | ,@(return-values)) |
310da1d5 |
169 | `(progn |
9adccb27 |
170 | (unwind-protect |
171 | ,alien-funcall |
172 | ,@(cleanup-forms)) |
3840beb2 |
173 | (values ,@(return-values))))))))) |
310da1d5 |
174 | |
175 | |
9adccb27 |
176 | ;;; Creates bindings at runtime |
310da1d5 |
177 | (defun mkbinding (name return-type &rest arg-types) |
73572c12 |
178 | #+cmu(declare (optimize (inhibit-warnings 3))) |
179 | #+sbcl(declare (muffle-conditions compiler-note)) |
9adccb27 |
180 | (let* ((ftype |
181 | `(function ,@(mapcar #'alien-type (cons return-type arg-types)))) |
310da1d5 |
182 | (alien |
73572c12 |
183 | (%heap-alien |
184 | (make-heap-alien-info |
185 | :type (parse-alien-type ftype #+sbcl nil) |
186 | :sap-form (foreign-symbol-address name)))) |
9adccb27 |
187 | (translate-arguments (mapcar #'to-alien-function arg-types)) |
188 | (translate-return-value (from-alien-function return-type)) |
189 | (cleanup-arguments (mapcar #'cleanup-function arg-types))) |
190 | |
310da1d5 |
191 | #'(lambda (&rest args) |
192 | (map-into args #'funcall translate-arguments args) |
193 | (prog1 |
9adccb27 |
194 | (funcall translate-return-value |
73572c12 |
195 | (apply #'alien-funcall alien args)) |
310da1d5 |
196 | (mapc #'funcall cleanup-arguments args))))) |
197 | |
8755b1a5 |
198 | |
199 | (defmacro defcallback (name (return-type &rest args) &body body) |
73572c12 |
200 | (let ((def-callback #+cmu'alien:def-callback |
201 | #+sbcl'sb-alien:define-alien-function)) |
202 | `(,def-callback ,name |
203 | (,(alien-type return-type) |
204 | ,@(mapcar #'(lambda (arg) |
205 | (destructuring-bind (name type) arg |
206 | `(,name ,(alien-type type)))) |
207 | args)) |
208 | ,(to-alien-form |
209 | `(let (,@(mapcar #'(lambda (arg) |
210 | (destructuring-bind (name type) arg |
211 | `(,name ,(from-alien-form name type)))) |
212 | args)) |
213 | ,@body) |
214 | return-type)))) |
215 | |
216 | #+sbcl |
217 | (defun callback (af) |
218 | (sb-alien:alien-function-sap af)) |
8755b1a5 |
219 | |
310da1d5 |
220 | |
221 | ;;;; Definitons and translations of fundamental types |
222 | |
9adccb27 |
223 | (defmacro def-type-method (name args &optional documentation) |
224 | `(progn |
225 | (defgeneric ,name (,@args type &rest args) |
226 | ,@(when documentation `((:documentation ,documentation)))) |
227 | (defmethod ,name (,@args (type symbol) &rest args) |
228 | (let ((class (find-class type nil))) |
229 | (if class |
230 | (apply #',name ,@args class args) |
231 | (multiple-value-bind (super-type expanded-p) |
232 | (type-expand-1 (cons type args)) |
233 | (if expanded-p |
234 | (,name ,@args super-type) |
235 | (call-next-method)))))) |
236 | (defmethod ,name (,@args (type cons) &rest args) |
237 | (declare (ignore args)) |
238 | (apply #',name ,@args (first type) (rest type))))) |
239 | |
310da1d5 |
240 | |
9adccb27 |
241 | (def-type-method alien-type ()) |
242 | (def-type-method size-of ()) |
243 | (def-type-method to-alien-form (form)) |
244 | (def-type-method from-alien-form (form)) |
245 | (def-type-method cleanup-form (form) |
246 | "Creates a form to clean up after the alien call has finished.") |
310da1d5 |
247 | |
9adccb27 |
248 | (def-type-method to-alien-function ()) |
249 | (def-type-method from-alien-function ()) |
250 | (def-type-method cleanup-function ()) |
310da1d5 |
251 | |
9ca5565a |
252 | (def-type-method copy-to-alien-form (form)) |
253 | (def-type-method copy-to-alien-function ()) |
254 | (def-type-method copy-from-alien-form (form)) |
255 | (def-type-method copy-from-alien-function ()) |
256 | |
9adccb27 |
257 | (def-type-method writer-function ()) |
258 | (def-type-method reader-function ()) |
259 | (def-type-method destroy-function ()) |
310da1d5 |
260 | |
12b7df04 |
261 | (def-type-method unbound-value () |
262 | "First return value is true if the type has an unbound value, second return value is the actual unbound value") |
263 | |
310da1d5 |
264 | |
8755b1a5 |
265 | ;; Sizes of fundamental C types in bytes (8 bits) |
266 | (defconstant +size-of-short+ 2) |
267 | (defconstant +size-of-int+ 4) |
268 | (defconstant +size-of-long+ 4) |
269 | (defconstant +size-of-pointer+ 4) |
270 | (defconstant +size-of-float+ 4) |
271 | (defconstant +size-of-double+ 8) |
272 | |
273 | ;; Sizes of fundamental C types in bits |
274 | (defconstant +bits-of-byte+ 8) |
275 | (defconstant +bits-of-short+ 16) |
276 | (defconstant +bits-of-int+ 32) |
277 | (defconstant +bits-of-long+ 32) |
278 | |
279 | |
9adccb27 |
280 | (deftype int () '(signed-byte #.+bits-of-int+)) |
281 | (deftype unsigned-int () '(unsigned-byte #.+bits-of-int+)) |
282 | (deftype long () '(signed-byte #.+bits-of-long+)) |
283 | (deftype unsigned-long () '(unsigned-byte #.+bits-of-long+)) |
284 | (deftype short () '(signed-byte #.+bits-of-short+)) |
285 | (deftype unsigned-short () '(unsigned-byte #.+bits-of-short+)) |
286 | (deftype signed (&optional (size '*)) `(signed-byte ,size)) |
287 | (deftype unsigned (&optional (size '*)) `(unsigned-byte ,size)) |
288 | (deftype char () 'base-char) |
289 | (deftype pointer () 'system-area-pointer) |
290 | (deftype boolean (&optional (size '*)) (declare (ignore size)) `(member t nil)) |
291 | ;(deftype invalid () nil) |
310da1d5 |
292 | |
293 | |
9adccb27 |
294 | (defmethod to-alien-form (form (type t) &rest args) |
295 | (declare (ignore type args)) |
296 | form) |
310da1d5 |
297 | |
9adccb27 |
298 | (defmethod to-alien-function ((type t) &rest args) |
299 | (declare (ignore type args)) |
300 | #'identity) |
310da1d5 |
301 | |
9adccb27 |
302 | (defmethod from-alien-form (form (type t) &rest args) |
303 | (declare (ignore type args)) |
304 | form) |
310da1d5 |
305 | |
9adccb27 |
306 | (defmethod from-alien-function ((type t) &rest args) |
307 | (declare (ignore type args)) |
308 | #'identity) |
309 | |
310 | (defmethod cleanup-form (form (type t) &rest args) |
311 | (declare (ignore form type args)) |
312 | nil) |
310da1d5 |
313 | |
9adccb27 |
314 | (defmethod cleanup-function ((type t) &rest args) |
315 | (declare (ignore type args)) |
316 | #'identity) |
317 | |
318 | (defmethod destroy-function ((type t) &rest args) |
319 | (declare (ignore type args)) |
cdd375f3 |
320 | #'(lambda (location &optional offset) |
9adccb27 |
321 | (declare (ignore location offset)))) |
322 | |
9ca5565a |
323 | (defmethod copy-to-alien-form (form (type t) &rest args) |
324 | (apply #'to-alien-form form type args)) |
325 | |
326 | (defmethod copy-to-alien-function ((type t) &rest args) |
327 | (apply #'to-alien-function type args)) |
328 | |
329 | (defmethod copy-from-alien-form (form (type t) &rest args) |
330 | (apply #'from-alien-form form type args)) |
331 | |
332 | (defmethod copy-from-alien-function ((type t) &rest args) |
333 | (apply #'from-alien-function type args)) |
334 | |
9adccb27 |
335 | |
336 | (defmethod alien-type ((type (eql 'signed-byte)) &rest args) |
337 | (declare (ignore type)) |
338 | (destructuring-bind (&optional (size '*)) args |
339 | (ecase size |
73572c12 |
340 | (#.+bits-of-byte+ #+cmu'(alien:signed 8) #+sbcl'(sb-alien:signed 8)) |
341 | (#.+bits-of-short+ #+cmu 'c-call:short #+sbcl 'sb-alien:short) |
342 | ((* #.+bits-of-int+) #+cmu 'c-call:int #+sbcl 'sb-alien:int) |
343 | (#.+bits-of-long+ #+cmu 'c-call:long #+sbcl 'sb-alien:long)))) |
9adccb27 |
344 | |
345 | (defmethod size-of ((type (eql 'signed-byte)) &rest args) |
346 | (declare (ignore type)) |
347 | (destructuring-bind (&optional (size '*)) args |
348 | (ecase size |
349 | (#.+bits-of-byte+ 1) |
350 | (#.+bits-of-short+ +size-of-short+) |
351 | ((* #.+bits-of-int+) +size-of-int+) |
352 | (#.+bits-of-long+ +size-of-long+)))) |
353 | |
12b7df04 |
354 | (defmethod unbound-value ((type t) &rest args) |
355 | (declare (ignore type args)) |
356 | nil) |
357 | |
9adccb27 |
358 | (defmethod writer-function ((type (eql 'signed-byte)) &rest args) |
359 | (declare (ignore type)) |
360 | (destructuring-bind (&optional (size '*)) args |
361 | (let ((size (if (eq size '*) +bits-of-int+ size))) |
362 | (ecase size |
363 | (8 #'(lambda (value location &optional (offset 0)) |
364 | (setf (signed-sap-ref-8 location offset) value))) |
365 | (16 #'(lambda (value location &optional (offset 0)) |
366 | (setf (signed-sap-ref-16 location offset) value))) |
367 | (32 #'(lambda (value location &optional (offset 0)) |
368 | (setf (signed-sap-ref-32 location offset) value))) |
369 | (64 #'(lambda (value location &optional (offset 0)) |
370 | (setf (signed-sap-ref-64 location offset) value))))))) |
371 | |
372 | (defmethod reader-function ((type (eql 'signed-byte)) &rest args) |
373 | (declare (ignore type)) |
374 | (destructuring-bind (&optional (size '*)) args |
375 | (let ((size (if (eq size '*) +bits-of-int+ size))) |
376 | (ecase size |
377 | (8 #'(lambda (sap &optional (offset 0)) |
378 | (signed-sap-ref-8 sap offset))) |
379 | (16 #'(lambda (sap &optional (offset 0)) |
380 | (signed-sap-ref-16 sap offset))) |
381 | (32 #'(lambda (sap &optional (offset 0)) |
382 | (signed-sap-ref-32 sap offset))) |
383 | (64 #'(lambda (sap &optional (offset 0)) |
384 | (signed-sap-ref-64 sap offset))))))) |
385 | |
386 | (defmethod alien-type ((type (eql 'unsigned-byte)) &rest args) |
387 | (destructuring-bind (&optional (size '*)) args |
388 | (ecase size |
73572c12 |
389 | (#.+bits-of-byte+ #+cmu'(alien:unsigned 8) #+sbcl'(sb-alien:unsigned 8)) |
390 | (#.+bits-of-short+ #+cmu 'c-call:unsigned-short |
391 | #+sbcl 'sb-alien:unsigned-short) |
392 | ((* #.+bits-of-int+) #+cmu 'c-call:unsigned-int |
393 | #+sbcl 'sb-alien:unsigned-int) |
394 | (#.+bits-of-long+ #+cmu 'c-call:unsigned-long |
395 | #+sbcl 'sb-alien:unsigned-long)))) |
9adccb27 |
396 | |
397 | (defmethod size-of ((type (eql 'unsigned-byte)) &rest args) |
398 | (apply #'size-of 'signed args)) |
399 | |
400 | (defmethod writer-function ((type (eql 'unsigned-byte)) &rest args) |
401 | (declare (ignore type)) |
402 | (destructuring-bind (&optional (size '*)) args |
403 | (let ((size (if (eq size '*) +bits-of-int+ size))) |
404 | (ecase size |
405 | (8 #'(lambda (value location &optional (offset 0)) |
406 | (setf (sap-ref-8 location offset) value))) |
407 | (16 #'(lambda (value location &optional (offset 0)) |
408 | (setf (sap-ref-16 location offset) value))) |
409 | (32 #'(lambda (value location &optional (offset 0)) |
410 | (setf (sap-ref-32 location offset) value))) |
411 | (64 #'(lambda (value location &optional (offset 0)) |
412 | (setf (sap-ref-64 location offset) value))))))) |
413 | |
414 | (defmethod reader-function ((type (eql 'unsigned-byte)) &rest args) |
415 | (declare (ignore type)) |
416 | (destructuring-bind (&optional (size '*)) args |
417 | (let ((size (if (eq size '*) +bits-of-int+ size))) |
418 | (ecase size |
419 | (8 #'(lambda (sap &optional (offset 0)) |
420 | (sap-ref-8 sap offset))) |
421 | (16 #'(lambda (sap &optional (offset 0)) |
422 | (sap-ref-16 sap offset))) |
423 | (32 #'(lambda (sap &optional (offset 0)) |
424 | (sap-ref-32 sap offset))) |
425 | (64 #'(lambda (sap &optional (offset 0)) |
426 | (sap-ref-64 sap offset))))))) |
427 | |
428 | |
429 | (defmethod alien-type ((type (eql 'integer)) &rest args) |
430 | (declare (ignore type args)) |
431 | (alien-type 'signed-byte)) |
310da1d5 |
432 | |
9adccb27 |
433 | (defmethod size-of ((type (eql 'integer)) &rest args) |
434 | (declare (ignore type args)) |
435 | (size-of 'signed-byte)) |
310da1d5 |
436 | |
78778e5a |
437 | (defmethod writer-function ((type (eql 'integer)) &rest args) |
438 | (declare (ignore type args)) |
439 | (writer-function 'signed-byte)) |
440 | |
441 | (defmethod reader-function ((type (eql 'integer)) &rest args) |
442 | (declare (ignore type args)) |
443 | (reader-function 'signed-byte)) |
444 | |
310da1d5 |
445 | |
9adccb27 |
446 | (defmethod alien-type ((type (eql 'fixnum)) &rest args) |
447 | (declare (ignore type args)) |
448 | (alien-type 'signed-byte)) |
310da1d5 |
449 | |
9adccb27 |
450 | (defmethod size-of ((type (eql 'fixnum)) &rest args) |
451 | (declare (ignore type args)) |
452 | (size-of 'signed-byte)) |
310da1d5 |
453 | |
454 | |
9adccb27 |
455 | (defmethod alien-type ((type (eql 'single-float)) &rest args) |
456 | (declare (ignore type args)) |
73572c12 |
457 | #+cmu 'alien:single-float #+sbcl 'sb-alien:single-float) |
310da1d5 |
458 | |
9adccb27 |
459 | (defmethod size-of ((type (eql 'single-float)) &rest args) |
460 | (declare (ignore type args)) |
310da1d5 |
461 | +size-of-float+) |
462 | |
9adccb27 |
463 | (defmethod writer-function ((type (eql 'single-float)) &rest args) |
464 | (declare (ignore type args)) |
465 | #'(lambda (value location &optional (offset 0)) |
8755b1a5 |
466 | (setf (sap-ref-single location offset) (coerce value 'single-float)))) |
310da1d5 |
467 | |
9adccb27 |
468 | (defmethod reader-function ((type (eql 'single-float)) &rest args) |
469 | (declare (ignore type args)) |
470 | #'(lambda (sap &optional (offset 0)) |
471 | (sap-ref-single sap offset))) |
310da1d5 |
472 | |
473 | |
9adccb27 |
474 | (defmethod alien-type ((type (eql 'double-float)) &rest args) |
475 | (declare (ignore type args)) |
73572c12 |
476 | #+cmu 'alien:double-float #+sbcl 'sb-alien:double-float) |
310da1d5 |
477 | |
9adccb27 |
478 | (defmethod size-of ((type (eql 'double-float)) &rest args) |
479 | (declare (ignore type args)) |
3d285e35 |
480 | +size-of-double+) |
310da1d5 |
481 | |
9adccb27 |
482 | (defmethod writer-function ((type (eql 'double-float)) &rest args) |
483 | (declare (ignore type args)) |
484 | #'(lambda (value location &optional (offset 0)) |
485 | (setf (sap-ref-double location offset) (coerce value 'double-float)))) |
310da1d5 |
486 | |
9adccb27 |
487 | (defmethod reader-function ((type (eql 'double-float)) &rest args) |
488 | (declare (ignore type args)) |
489 | #'(lambda (sap &optional (offset 0)) |
490 | (sap-ref-double sap offset))) |
310da1d5 |
491 | |
492 | |
9adccb27 |
493 | (defmethod alien-type ((type (eql 'base-char)) &rest args) |
494 | (declare (ignore type args)) |
73572c12 |
495 | #+cmu 'c-call:char #+sbcl 'sb-alien:char) |
310da1d5 |
496 | |
9adccb27 |
497 | (defmethod size-of ((type (eql 'base-char)) &rest args) |
498 | (declare (ignore type args)) |
310da1d5 |
499 | 1) |
500 | |
9adccb27 |
501 | (defmethod writer-function ((type (eql 'base-char)) &rest args) |
502 | (declare (ignore type args)) |
503 | #'(lambda (char location &optional (offset 0)) |
504 | (setf (sap-ref-8 location offset) (char-code char)))) |
310da1d5 |
505 | |
9adccb27 |
506 | (defmethod reader-function ((type (eql 'base-char)) &rest args) |
507 | (declare (ignore type args)) |
508 | #'(lambda (location &optional (offset 0)) |
509 | (code-char (sap-ref-8 location offset)))) |
310da1d5 |
510 | |
511 | |
9adccb27 |
512 | (defmethod alien-type ((type (eql 'string)) &rest args) |
513 | (declare (ignore type args)) |
514 | (alien-type 'pointer)) |
310da1d5 |
515 | |
9adccb27 |
516 | (defmethod size-of ((type (eql 'string)) &rest args) |
517 | (declare (ignore type args)) |
518 | (size-of 'pointer)) |
310da1d5 |
519 | |
9adccb27 |
520 | (defmethod to-alien-form (string (type (eql 'string)) &rest args) |
521 | (declare (ignore type args)) |
310da1d5 |
522 | `(let ((string ,string)) |
523 | ;; Always copy strings to prevent seg fault due to GC |
524 | (copy-memory |
73572c12 |
525 | (vector-sap (coerce string 'simple-base-string)) |
310da1d5 |
526 | (1+ (length string))))) |
310da1d5 |
527 | |
9adccb27 |
528 | (defmethod to-alien-function ((type (eql 'string)) &rest args) |
529 | (declare (ignore type args)) |
530 | #'(lambda (string) |
531 | (copy-memory |
73572c12 |
532 | (vector-sap (coerce string 'simple-base-string)) |
9adccb27 |
533 | (1+ (length string))))) |
534 | |
535 | (defmethod from-alien-form (string (type (eql 'string)) &rest args) |
536 | (declare (ignore type args)) |
537 | `(let ((string ,string)) |
538 | (unless (null-pointer-p string) |
9ca5565a |
539 | (prog1 |
73572c12 |
540 | (%naturalize-c-string string) |
9ca5565a |
541 | (deallocate-memory string))))) |
310da1d5 |
542 | |
9adccb27 |
543 | (defmethod from-alien-function ((type (eql 'string)) &rest args) |
544 | (declare (ignore type args)) |
545 | #'(lambda (string) |
546 | (unless (null-pointer-p string) |
9ca5565a |
547 | (prog1 |
73572c12 |
548 | (%naturalize-c-string string) |
9ca5565a |
549 | (deallocate-memory string))))) |
310da1d5 |
550 | |
9adccb27 |
551 | (defmethod cleanup-form (string (type (eql 'string)) &rest args) |
552 | (declare (ignore type args)) |
553 | `(let ((string ,string)) |
554 | (unless (null-pointer-p string) |
555 | (deallocate-memory string)))) |
556 | |
557 | (defmethod cleanup-function ((type (eql 'string)) &rest args) |
8755b1a5 |
558 | (declare (ignore args)) |
9adccb27 |
559 | #'(lambda (string) |
560 | (unless (null-pointer-p string) |
561 | (deallocate-memory string)))) |
562 | |
9ca5565a |
563 | (defmethod copy-from-alien-form (string (type (eql 'string)) &rest args) |
564 | (declare (ignore type args)) |
565 | `(let ((string ,string)) |
566 | (unless (null-pointer-p string) |
73572c12 |
567 | (%naturalize-c-string string)))) |
568 | |
9ca5565a |
569 | |
570 | (defmethod copy-from-alien-function ((type (eql 'string)) &rest args) |
571 | (declare (ignore type args)) |
572 | #'(lambda (string) |
573 | (unless (null-pointer-p string) |
73572c12 |
574 | (%naturalize-c-string string)))) |
9ca5565a |
575 | |
9adccb27 |
576 | (defmethod writer-function ((type (eql 'string)) &rest args) |
577 | (declare (ignore type args)) |
578 | #'(lambda (string location &optional (offset 0)) |
579 | (assert (null-pointer-p (sap-ref-sap location offset))) |
580 | (setf (sap-ref-sap location offset) |
581 | (copy-memory |
73572c12 |
582 | (vector-sap (coerce string 'simple-base-string)) |
9adccb27 |
583 | (1+ (length string)))))) |
584 | |
585 | (defmethod reader-function ((type (eql 'string)) &rest args) |
586 | (declare (ignore type args)) |
587 | #'(lambda (location &optional (offset 0)) |
588 | (unless (null-pointer-p (sap-ref-sap location offset)) |
73572c12 |
589 | (%naturalize-c-string (sap-ref-sap location offset))))) |
9adccb27 |
590 | |
591 | (defmethod destroy-function ((type (eql 'string)) &rest args) |
592 | (declare (ignore type args)) |
593 | #'(lambda (location &optional (offset 0)) |
594 | (unless (null-pointer-p (sap-ref-sap location offset)) |
595 | (deallocate-memory (sap-ref-sap location offset)) |
596 | (setf (sap-ref-sap location offset) (make-pointer 0))))) |
597 | |
12b7df04 |
598 | (defmethod unbound-value ((type (eql 'string)) &rest args) |
599 | (declare (ignore type args)) |
600 | (values t nil)) |
9adccb27 |
601 | |
602 | (defmethod alien-type ((type (eql 'pathname)) &rest args) |
603 | (declare (ignore type args)) |
604 | (alien-type 'string)) |
605 | |
606 | (defmethod size-of ((type (eql 'pathname)) &rest args) |
607 | (declare (ignore type args)) |
608 | (size-of 'string)) |
310da1d5 |
609 | |
9adccb27 |
610 | (defmethod to-alien-form (path (type (eql 'pathname)) &rest args) |
611 | (declare (ignore type args)) |
612 | (to-alien-form `(namestring (translate-logical-pathname ,path)) 'string)) |
613 | |
614 | (defmethod to-alien-function ((type (eql 'pathname)) &rest args) |
615 | (declare (ignore type args)) |
616 | (let ((string-function (to-alien-function 'string))) |
617 | #'(lambda (path) |
618 | (funcall string-function (namestring path))))) |
619 | |
620 | (defmethod from-alien-form (string (type (eql 'pathname)) &rest args) |
621 | (declare (ignore type args)) |
622 | `(parse-namestring ,(from-alien-form string 'string))) |
623 | |
624 | (defmethod from-alien-function ((type (eql 'pathname)) &rest args) |
625 | (declare (ignore type args)) |
626 | (let ((string-function (from-alien-function 'string))) |
627 | #'(lambda (string) |
628 | (parse-namestring (funcall string-function string))))) |
629 | |
630 | (defmethod cleanup-form (string (type (eql 'pathnanme)) &rest args) |
631 | (declare (ignore type args)) |
632 | (cleanup-form string 'string)) |
633 | |
634 | (defmethod cleanup-function ((type (eql 'pathnanme)) &rest args) |
635 | (declare (ignore type args)) |
636 | (cleanup-function 'string)) |
637 | |
638 | (defmethod writer-function ((type (eql 'pathname)) &rest args) |
639 | (declare (ignore type args)) |
640 | (let ((string-writer (writer-function 'string))) |
641 | #'(lambda (path location &optional (offset 0)) |
642 | (funcall string-writer (namestring path) location offset)))) |
643 | |
644 | (defmethod reader-function ((type (eql 'pathname)) &rest args) |
645 | (declare (ignore type args)) |
646 | (let ((string-reader (reader-function 'string))) |
647 | #'(lambda (location &optional (offset 0)) |
648 | (let ((string (funcall string-reader location offset))) |
649 | (when string |
650 | (parse-namestring string)))))) |
651 | |
652 | (defmethod destroy-function ((type (eql 'pathname)) &rest args) |
653 | (declare (ignore type args)) |
654 | (destroy-function 'string)) |
655 | |
12b7df04 |
656 | (defmethod unbound-value ((type (eql 'pathname)) &rest args) |
657 | (declare (ignore type args)) |
658 | (unbound-value 'string)) |
659 | |
9adccb27 |
660 | |
661 | (defmethod alien-type ((type (eql 'boolean)) &rest args) |
662 | (apply #'alien-type 'signed-byte args)) |
663 | |
664 | (defmethod size-of ((type (eql 'boolean)) &rest args) |
665 | (apply #'size-of 'signed-byte args)) |
666 | |
667 | (defmethod to-alien-form (boolean (type (eql 'boolean)) &rest args) |
668 | (declare (ignore type args)) |
310da1d5 |
669 | `(if ,boolean 1 0)) |
670 | |
9adccb27 |
671 | (defmethod to-alien-function ((type (eql 'boolean)) &rest args) |
672 | (declare (ignore type args)) |
673 | #'(lambda (boolean) |
674 | (if boolean 1 0))) |
675 | |
676 | (defmethod from-alien-form (boolean (type (eql 'boolean)) &rest args) |
677 | (declare (ignore type args)) |
678 | `(not (zerop ,boolean))) |
679 | |
680 | (defmethod from-alien-function ((type (eql 'boolean)) &rest args) |
681 | (declare (ignore type args)) |
682 | #'(lambda (boolean) |
683 | (not (zerop boolean)))) |
684 | |
685 | (defmethod writer-function ((type (eql 'boolean)) &rest args) |
686 | (declare (ignore type)) |
687 | (let ((writer (apply #'writer-function 'signed-byte args))) |
688 | #'(lambda (boolean location &optional (offset 0)) |
689 | (funcall writer (if boolean 1 0) location offset)))) |
690 | |
691 | (defmethod reader-function ((type (eql 'boolean)) &rest args) |
692 | (declare (ignore type)) |
693 | (let ((reader (apply #'reader-function 'signed-byte args))) |
694 | #'(lambda (location &optional (offset 0)) |
695 | (not (zerop (funcall reader location offset)))))) |
696 | |
697 | |
698 | (defmethod alien-type ((type (eql 'or)) &rest args) |
699 | (let ((alien-type (alien-type (first args)))) |
700 | (unless (every #'(lambda (type) |
701 | (eq alien-type (alien-type type))) |
702 | (rest args)) |
703 | (error "No common alien type specifier for union type: ~A" |
704 | (cons type args))) |
310da1d5 |
705 | alien-type)) |
706 | |
9adccb27 |
707 | (defmethod size-of ((type (eql 'or)) &rest args) |
708 | (declare (ignore type)) |
709 | (size-of (first args))) |
710 | |
711 | (defmethod to-alien-form (form (type (eql 'or)) &rest args) |
712 | (declare (ignore type)) |
713 | `(let ((value ,form)) |
714 | (etypecase value |
715 | ,@(mapcar |
716 | #'(lambda (type) |
717 | `(,type ,(to-alien-form 'value type))) |
718 | args)))) |
719 | |
720 | (defmethod to-alien-function ((type (eql 'or)) &rest types) |
721 | (declare (ignore type)) |
722 | (let ((functions (mapcar #'to-alien-function types))) |
723 | #'(lambda (value) |
724 | (loop |
725 | for function in functions |
726 | for type in types |
727 | when (typep value type) |
728 | do (return (funcall function value)) |
729 | finally (error "~S is not of type ~A" value `(or ,@types)))))) |
730 | |
731 | (defmethod alien-type ((type (eql 'system-area-pointer)) &rest args) |
732 | (declare (ignore type args)) |
310da1d5 |
733 | 'system-area-pointer) |
734 | |
9adccb27 |
735 | (defmethod size-of ((type (eql 'system-area-pointer)) &rest args) |
736 | (declare (ignore type args)) |
737 | +size-of-pointer+) |
310da1d5 |
738 | |
9adccb27 |
739 | (defmethod writer-function ((type (eql 'system-area-pointer)) &rest args) |
740 | (declare (ignore type args)) |
741 | #'(lambda (sap location &optional (offset 0)) |
742 | (setf (sap-ref-sap location offset) sap))) |
310da1d5 |
743 | |
9adccb27 |
744 | (defmethod reader-function ((type (eql 'system-area-pointer)) &rest args) |
745 | (declare (ignore type args)) |
746 | #'(lambda (location &optional (offset 0)) |
747 | (sap-ref-sap location offset))) |
310da1d5 |
748 | |
749 | |
9adccb27 |
750 | (defmethod alien-type ((type (eql 'null)) &rest args) |
751 | (declare (ignore type args)) |
752 | (alien-type 'pointer)) |
310da1d5 |
753 | |
9adccb27 |
754 | (defmethod size-of ((type (eql 'null)) &rest args) |
755 | (declare (ignore type args)) |
756 | (size-of 'pointer)) |
757 | |
758 | (defmethod to-alien-form (null (type (eql 'null)) &rest args) |
759 | (declare (ignore null type args)) |
310da1d5 |
760 | `(make-pointer 0)) |
761 | |
9adccb27 |
762 | (defmethod to-alien-function ((type (eql 'null)) &rest args) |
763 | (declare (ignore type args)) |
764 | #'(lambda (null) |
765 | (declare (ignore null)) |
766 | (make-pointer 0))) |
310da1d5 |
767 | |
310da1d5 |
768 | |
9adccb27 |
769 | (defmethod alien-type ((type (eql 'nil)) &rest args) |
770 | (declare (ignore type args)) |
73572c12 |
771 | 'void) |
9adccb27 |
772 | |
773 | (defmethod from-alien-function ((type (eql 'nil)) &rest args) |
774 | (declare (ignore type args)) |
775 | #'(lambda (value) |
776 | (declare (ignore value)) |
777 | (values))) |
9ca5565a |
778 | |
779 | |
780 | (defmethod alien-type ((type (eql 'copy-of)) &rest args) |
781 | (declare (ignore type)) |
782 | (alien-type (first args))) |
783 | |
784 | (defmethod size-of ((type (eql 'copy-of)) &rest args) |
785 | (declare (ignore type)) |
786 | (size-of (first args))) |
787 | |
788 | (defmethod to-alien-form (form (type (eql 'copy-of)) &rest args) |
789 | (declare (ignore type)) |
790 | (copy-to-alien-form form (first args))) |
791 | |
792 | (defmethod to-alien-function ((type (eql 'copy-of)) &rest args) |
793 | (declare (ignore type)) |
794 | (copy-to-alien-function (first args))) |
795 | |
796 | (defmethod from-alien-form (form (type (eql 'copy-of)) &rest args) |
797 | (declare (ignore type)) |
798 | (copy-from-alien-form form (first args))) |
799 | |
800 | (defmethod from-alien-function ((type (eql 'copy-of)) &rest args) |
801 | (declare (ignore type)) |
802 | (copy-from-alien-function (first args))) |
803 | |
cdd375f3 |
804 | (defmethod reader-function ((type (eql 'copy-of)) &rest args) |
805 | (declare (ignore type)) |
806 | (reader-function (first args))) |
807 | |
808 | (defmethod writer-function ((type (eql 'copy-of)) &rest args) |
809 | (declare (ignore type)) |
810 | (writer-function (first args))) |