fc358945 |
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 | |
508d13a7 |
18 | ;; $Id: ffi.lisp,v 1.6 2004/11/19 13:02:51 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) |
50 | (let* ((lisp-name-string |
51 | (if (char= (char (the simple-string (string lisp-name)) 0) #\%) |
52 | (subseq (the simple-string (string lisp-name)) 1) |
53 | (string lisp-name))) |
54 | (prefix (package-prefix *package*)) |
55 | (name (substitute #\_ #\- (string-downcase lisp-name-string)))) |
56 | (if (or (not prefix) (string= prefix "")) |
57 | name |
58 | (format nil "~A_~A" prefix name)))) |
59 | |
60 | (defun default-alien-type-name (type-name) |
61 | (let ((prefix (package-prefix *package*))) |
62 | (apply |
63 | #'concatenate |
64 | 'string |
65 | (mapcar |
66 | #'string-capitalize |
67 | (cons prefix (split-string (symbol-name type-name) #\-)))))) |
68 | |
69 | (defun default-type-name (alien-name) |
70 | (let ((parts |
71 | (mapcar |
72 | #'string-upcase |
73 | (split-string-if alien-name #'upper-case-p)))) |
74 | (intern |
75 | (concatenate-strings |
76 | (rest parts) #\-) (find-prefix-package (first parts))))) |
77 | |
78 | |
6baf860c |
79 | (defmacro defbinding (name lambda-list return-type &rest docs/args) |
fc358945 |
80 | (multiple-value-bind (lisp-name c-name) |
81 | (if (atom name) |
82 | (values name (default-alien-fname name)) |
83 | (values-list name)) |
84 | |
85 | (let ((supplied-lambda-list lambda-list) |
86 | (docs nil) |
87 | (args nil)) |
88 | (dolist (doc/arg docs/args) |
89 | (if (stringp doc/arg) |
90 | (push doc/arg docs) |
91 | (progn |
92 | (destructuring-bind (expr type &optional (style :in)) doc/arg |
6cb19a68 |
93 | (unless (member style '(:in :out :in-out :return)) |
fc358945 |
94 | (error "Bogus argument style ~S in ~S." style doc/arg)) |
95 | (when (and |
96 | (not supplied-lambda-list) |
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97 | (namep expr) (member style '(:in :in-out :return))) |
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98 | (push expr lambda-list)) |
99 | (push |
6baf860c |
100 | (list (if (namep expr) |
101 | (make-symbol (string expr)) |
102 | (gensym)) |
103 | expr (mklist type) style) args))))) |
fc358945 |
104 | |
105 | (%defbinding |
106 | c-name lisp-name (or supplied-lambda-list (nreverse lambda-list)) |
6baf860c |
107 | return-type (reverse docs) (reverse args))))) |
fc358945 |
108 | |
109 | #+cmu |
6baf860c |
110 | (defun %defbinding (foreign-name lisp-name lambda-list return-type docs args) |
111 | (ext:collect ((alien-types) (alien-bindings) (alien-parameters) |
6cb19a68 |
112 | (return-values) (cleanup-forms)) |
fc358945 |
113 | (dolist (arg args) |
6baf860c |
114 | (destructuring-bind (var expr type style) arg |
115 | (let ((declaration (alien-type type)) |
116 | (cleanup (cleanup-form var type))) |
117 | |
fc358945 |
118 | (cond |
6cb19a68 |
119 | ((member style '(:out :in-out)) |
120 | (alien-types `(* ,declaration)) |
121 | (alien-parameters `(addr ,var)) |
122 | (alien-bindings |
123 | `(,var ,declaration |
124 | ,@(when (eq style :in-out) |
125 | (list (to-alien-form expr type))))) |
126 | (return-values (from-alien-form var type))) |
127 | ((eq style :return) |
128 | (alien-types declaration) |
129 | (alien-bindings |
130 | `(,var ,declaration ,(to-alien-form expr type))) |
131 | (alien-parameters var) |
132 | (return-values (from-alien-form var type))) |
133 | (cleanup |
134 | (alien-types declaration) |
135 | (alien-bindings |
136 | `(,var ,declaration ,(to-alien-form expr type))) |
137 | (alien-parameters var) |
138 | (cleanup-forms cleanup)) |
139 | (t |
140 | (alien-types declaration) |
141 | (alien-parameters (to-alien-form expr type))))))) |
fc358945 |
142 | |
143 | (let* ((alien-name (make-symbol (string lisp-name))) |
144 | (alien-funcall `(alien-funcall ,alien-name ,@(alien-parameters)))) |
145 | `(defun ,lisp-name ,lambda-list |
146 | ,@docs |
147 | (declare (optimize (ext:inhibit-warnings 3))) |
148 | (with-alien ((,alien-name |
149 | (function |
6baf860c |
150 | ,(alien-type return-type) |
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151 | ,@(alien-types)) |
152 | :extern ,foreign-name) |
153 | ,@(alien-bindings)) |
6baf860c |
154 | ,(if return-type |
155 | `(values |
156 | (unwind-protect |
157 | ,(from-alien-form alien-funcall return-type) |
158 | ,@(cleanup-forms)) |
6cb19a68 |
159 | ,@(return-values)) |
fc358945 |
160 | `(progn |
6baf860c |
161 | (unwind-protect |
162 | ,alien-funcall |
163 | ,@(cleanup-forms)) |
6cb19a68 |
164 | (values ,@(return-values))))))))) |
fc358945 |
165 | |
166 | |
6baf860c |
167 | ;;; Creates bindings at runtime |
fc358945 |
168 | (defun mkbinding (name return-type &rest arg-types) |
6baf860c |
169 | (declare (optimize (ext:inhibit-warnings 3))) |
170 | (let* ((ftype |
171 | `(function ,@(mapcar #'alien-type (cons return-type arg-types)))) |
fc358945 |
172 | (alien |
173 | (alien::%heap-alien |
174 | (alien::make-heap-alien-info |
175 | :type (alien::parse-alien-type ftype) |
176 | :sap-form (system:foreign-symbol-address name :flavor :code)))) |
6baf860c |
177 | (translate-arguments (mapcar #'to-alien-function arg-types)) |
178 | (translate-return-value (from-alien-function return-type)) |
179 | (cleanup-arguments (mapcar #'cleanup-function arg-types))) |
180 | |
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181 | #'(lambda (&rest args) |
182 | (map-into args #'funcall translate-arguments args) |
183 | (prog1 |
6baf860c |
184 | (funcall translate-return-value |
185 | (apply #'alien:alien-funcall alien args)) |
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186 | (mapc #'funcall cleanup-arguments args))))) |
187 | |
7bde5a67 |
188 | |
189 | (defmacro defcallback (name (return-type &rest args) &body body) |
190 | `(def-callback ,name |
191 | (,(alien-type return-type) |
192 | ,@(mapcar #'(lambda (arg) |
193 | (destructuring-bind (name type) arg |
194 | `(,name ,(alien-type type)))) |
195 | args)) |
196 | ,(to-alien-form |
197 | `(let (,@(mapcar #'(lambda (arg) |
198 | (destructuring-bind (name type) arg |
199 | `(,name ,(from-alien-form name type)))) |
200 | args)) |
201 | ,@body) |
202 | return-type))) |
203 | |
204 | |
fc358945 |
205 | |
206 | ;;;; Definitons and translations of fundamental types |
207 | |
6baf860c |
208 | (defmacro def-type-method (name args &optional documentation) |
209 | `(progn |
210 | (defgeneric ,name (,@args type &rest args) |
211 | ,@(when documentation `((:documentation ,documentation)))) |
212 | (defmethod ,name (,@args (type symbol) &rest args) |
213 | (let ((class (find-class type nil))) |
214 | (if class |
215 | (apply #',name ,@args class args) |
216 | (multiple-value-bind (super-type expanded-p) |
217 | (type-expand-1 (cons type args)) |
218 | (if expanded-p |
219 | (,name ,@args super-type) |
220 | (call-next-method)))))) |
221 | (defmethod ,name (,@args (type cons) &rest args) |
222 | (declare (ignore args)) |
223 | (apply #',name ,@args (first type) (rest type))))) |
224 | |
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225 | |
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226 | (def-type-method alien-type ()) |
227 | (def-type-method size-of ()) |
228 | (def-type-method to-alien-form (form)) |
229 | (def-type-method from-alien-form (form)) |
230 | (def-type-method cleanup-form (form) |
231 | "Creates a form to clean up after the alien call has finished.") |
fc358945 |
232 | |
6baf860c |
233 | (def-type-method to-alien-function ()) |
234 | (def-type-method from-alien-function ()) |
235 | (def-type-method cleanup-function ()) |
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236 | |
508d13a7 |
237 | (def-type-method copy-to-alien-form (form)) |
238 | (def-type-method copy-to-alien-function ()) |
239 | (def-type-method copy-from-alien-form (form)) |
240 | (def-type-method copy-from-alien-function ()) |
241 | |
6baf860c |
242 | (def-type-method writer-function ()) |
243 | (def-type-method reader-function ()) |
244 | (def-type-method destroy-function ()) |
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245 | |
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246 | |
7bde5a67 |
247 | ;; Sizes of fundamental C types in bytes (8 bits) |
248 | (defconstant +size-of-short+ 2) |
249 | (defconstant +size-of-int+ 4) |
250 | (defconstant +size-of-long+ 4) |
251 | (defconstant +size-of-pointer+ 4) |
252 | (defconstant +size-of-float+ 4) |
253 | (defconstant +size-of-double+ 8) |
254 | |
255 | ;; Sizes of fundamental C types in bits |
256 | (defconstant +bits-of-byte+ 8) |
257 | (defconstant +bits-of-short+ 16) |
258 | (defconstant +bits-of-int+ 32) |
259 | (defconstant +bits-of-long+ 32) |
260 | |
261 | |
6baf860c |
262 | (deftype int () '(signed-byte #.+bits-of-int+)) |
263 | (deftype unsigned-int () '(unsigned-byte #.+bits-of-int+)) |
264 | (deftype long () '(signed-byte #.+bits-of-long+)) |
265 | (deftype unsigned-long () '(unsigned-byte #.+bits-of-long+)) |
266 | (deftype short () '(signed-byte #.+bits-of-short+)) |
267 | (deftype unsigned-short () '(unsigned-byte #.+bits-of-short+)) |
268 | (deftype signed (&optional (size '*)) `(signed-byte ,size)) |
269 | (deftype unsigned (&optional (size '*)) `(unsigned-byte ,size)) |
270 | (deftype char () 'base-char) |
271 | (deftype pointer () 'system-area-pointer) |
272 | (deftype boolean (&optional (size '*)) (declare (ignore size)) `(member t nil)) |
273 | ;(deftype invalid () nil) |
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274 | |
275 | |
6baf860c |
276 | (defmethod to-alien-form (form (type t) &rest args) |
277 | (declare (ignore type args)) |
278 | form) |
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279 | |
6baf860c |
280 | (defmethod to-alien-function ((type t) &rest args) |
281 | (declare (ignore type args)) |
282 | #'identity) |
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283 | |
6baf860c |
284 | (defmethod from-alien-form (form (type t) &rest args) |
285 | (declare (ignore type args)) |
286 | form) |
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287 | |
6baf860c |
288 | (defmethod from-alien-function ((type t) &rest args) |
289 | (declare (ignore type args)) |
290 | #'identity) |
291 | |
292 | (defmethod cleanup-form (form (type t) &rest args) |
293 | (declare (ignore form type args)) |
294 | nil) |
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295 | |
6baf860c |
296 | (defmethod cleanup-function ((type t) &rest args) |
297 | (declare (ignore type args)) |
298 | #'identity) |
299 | |
300 | (defmethod destroy-function ((type t) &rest args) |
301 | (declare (ignore type args)) |
302 | #'(lambda (location offset) |
303 | (declare (ignore location offset)))) |
304 | |
508d13a7 |
305 | (defmethod copy-to-alien-form (form (type t) &rest args) |
306 | (apply #'to-alien-form form type args)) |
307 | |
308 | (defmethod copy-to-alien-function ((type t) &rest args) |
309 | (apply #'to-alien-function type args)) |
310 | |
311 | (defmethod copy-from-alien-form (form (type t) &rest args) |
312 | (apply #'from-alien-form form type args)) |
313 | |
314 | (defmethod copy-from-alien-function ((type t) &rest args) |
315 | (apply #'from-alien-function type args)) |
316 | |
6baf860c |
317 | |
318 | (defmethod alien-type ((type (eql 'signed-byte)) &rest args) |
319 | (declare (ignore type)) |
320 | (destructuring-bind (&optional (size '*)) args |
321 | (ecase size |
322 | (#.+bits-of-byte+ '(signed-byte 8)) |
323 | (#.+bits-of-short+ 'c-call:short) |
324 | ((* #.+bits-of-int+) 'c-call:int) |
325 | (#.+bits-of-long+ 'c-call:long)))) |
326 | |
327 | (defmethod size-of ((type (eql 'signed-byte)) &rest args) |
328 | (declare (ignore type)) |
329 | (destructuring-bind (&optional (size '*)) args |
330 | (ecase size |
331 | (#.+bits-of-byte+ 1) |
332 | (#.+bits-of-short+ +size-of-short+) |
333 | ((* #.+bits-of-int+) +size-of-int+) |
334 | (#.+bits-of-long+ +size-of-long+)))) |
335 | |
336 | (defmethod writer-function ((type (eql 'signed-byte)) &rest args) |
337 | (declare (ignore type)) |
338 | (destructuring-bind (&optional (size '*)) args |
339 | (let ((size (if (eq size '*) +bits-of-int+ size))) |
340 | (ecase size |
341 | (8 #'(lambda (value location &optional (offset 0)) |
342 | (setf (signed-sap-ref-8 location offset) value))) |
343 | (16 #'(lambda (value location &optional (offset 0)) |
344 | (setf (signed-sap-ref-16 location offset) value))) |
345 | (32 #'(lambda (value location &optional (offset 0)) |
346 | (setf (signed-sap-ref-32 location offset) value))) |
347 | (64 #'(lambda (value location &optional (offset 0)) |
348 | (setf (signed-sap-ref-64 location offset) value))))))) |
349 | |
350 | (defmethod reader-function ((type (eql 'signed-byte)) &rest args) |
351 | (declare (ignore type)) |
352 | (destructuring-bind (&optional (size '*)) args |
353 | (let ((size (if (eq size '*) +bits-of-int+ size))) |
354 | (ecase size |
355 | (8 #'(lambda (sap &optional (offset 0)) |
356 | (signed-sap-ref-8 sap offset))) |
357 | (16 #'(lambda (sap &optional (offset 0)) |
358 | (signed-sap-ref-16 sap offset))) |
359 | (32 #'(lambda (sap &optional (offset 0)) |
360 | (signed-sap-ref-32 sap offset))) |
361 | (64 #'(lambda (sap &optional (offset 0)) |
362 | (signed-sap-ref-64 sap offset))))))) |
363 | |
364 | (defmethod alien-type ((type (eql 'unsigned-byte)) &rest args) |
365 | (destructuring-bind (&optional (size '*)) args |
366 | (ecase size |
367 | (#.+bits-of-byte+ '(unsigned-byte 8)) |
368 | (#.+bits-of-short+ 'c-call:unsigned-short) |
369 | ((* #.+bits-of-int+) 'c-call:unsigned-int) |
370 | (#.+bits-of-long+ 'c-call:unsigned-long)))) |
371 | |
372 | (defmethod size-of ((type (eql 'unsigned-byte)) &rest args) |
373 | (apply #'size-of 'signed args)) |
374 | |
375 | (defmethod writer-function ((type (eql 'unsigned-byte)) &rest args) |
376 | (declare (ignore type)) |
377 | (destructuring-bind (&optional (size '*)) args |
378 | (let ((size (if (eq size '*) +bits-of-int+ size))) |
379 | (ecase size |
380 | (8 #'(lambda (value location &optional (offset 0)) |
381 | (setf (sap-ref-8 location offset) value))) |
382 | (16 #'(lambda (value location &optional (offset 0)) |
383 | (setf (sap-ref-16 location offset) value))) |
384 | (32 #'(lambda (value location &optional (offset 0)) |
385 | (setf (sap-ref-32 location offset) value))) |
386 | (64 #'(lambda (value location &optional (offset 0)) |
387 | (setf (sap-ref-64 location offset) value))))))) |
388 | |
389 | (defmethod reader-function ((type (eql 'unsigned-byte)) &rest args) |
390 | (declare (ignore type)) |
391 | (destructuring-bind (&optional (size '*)) args |
392 | (let ((size (if (eq size '*) +bits-of-int+ size))) |
393 | (ecase size |
394 | (8 #'(lambda (sap &optional (offset 0)) |
395 | (sap-ref-8 sap offset))) |
396 | (16 #'(lambda (sap &optional (offset 0)) |
397 | (sap-ref-16 sap offset))) |
398 | (32 #'(lambda (sap &optional (offset 0)) |
399 | (sap-ref-32 sap offset))) |
400 | (64 #'(lambda (sap &optional (offset 0)) |
401 | (sap-ref-64 sap offset))))))) |
402 | |
403 | |
404 | (defmethod alien-type ((type (eql 'integer)) &rest args) |
405 | (declare (ignore type args)) |
406 | (alien-type 'signed-byte)) |
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407 | |
6baf860c |
408 | (defmethod size-of ((type (eql 'integer)) &rest args) |
409 | (declare (ignore type args)) |
410 | (size-of 'signed-byte)) |
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411 | |
42c6b247 |
412 | (defmethod writer-function ((type (eql 'integer)) &rest args) |
413 | (declare (ignore type args)) |
414 | (writer-function 'signed-byte)) |
415 | |
416 | (defmethod reader-function ((type (eql 'integer)) &rest args) |
417 | (declare (ignore type args)) |
418 | (reader-function 'signed-byte)) |
419 | |
fc358945 |
420 | |
6baf860c |
421 | (defmethod alien-type ((type (eql 'fixnum)) &rest args) |
422 | (declare (ignore type args)) |
423 | (alien-type 'signed-byte)) |
fc358945 |
424 | |
6baf860c |
425 | (defmethod size-of ((type (eql 'fixnum)) &rest args) |
426 | (declare (ignore type args)) |
427 | (size-of 'signed-byte)) |
fc358945 |
428 | |
429 | |
6baf860c |
430 | (defmethod alien-type ((type (eql 'single-float)) &rest args) |
431 | (declare (ignore type args)) |
432 | 'alien:single-float) |
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433 | |
6baf860c |
434 | (defmethod size-of ((type (eql 'single-float)) &rest args) |
435 | (declare (ignore type args)) |
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436 | +size-of-float+) |
437 | |
6baf860c |
438 | (defmethod writer-function ((type (eql 'single-float)) &rest args) |
439 | (declare (ignore type args)) |
440 | #'(lambda (value location &optional (offset 0)) |
7bde5a67 |
441 | (setf (sap-ref-single location offset) (coerce value 'single-float)))) |
fc358945 |
442 | |
6baf860c |
443 | (defmethod reader-function ((type (eql 'single-float)) &rest args) |
444 | (declare (ignore type args)) |
445 | #'(lambda (sap &optional (offset 0)) |
446 | (sap-ref-single sap offset))) |
fc358945 |
447 | |
448 | |
6baf860c |
449 | (defmethod alien-type ((type (eql 'double-float)) &rest args) |
450 | (declare (ignore type args)) |
451 | 'alien:double-float) |
fc358945 |
452 | |
6baf860c |
453 | (defmethod size-of ((type (eql 'double-float)) &rest args) |
454 | (declare (ignore type args)) |
455 | +size-of-float+) |
fc358945 |
456 | |
6baf860c |
457 | (defmethod writer-function ((type (eql 'double-float)) &rest args) |
458 | (declare (ignore type args)) |
459 | #'(lambda (value location &optional (offset 0)) |
460 | (setf (sap-ref-double location offset) (coerce value 'double-float)))) |
fc358945 |
461 | |
6baf860c |
462 | (defmethod reader-function ((type (eql 'double-float)) &rest args) |
463 | (declare (ignore type args)) |
464 | #'(lambda (sap &optional (offset 0)) |
465 | (sap-ref-double sap offset))) |
fc358945 |
466 | |
467 | |
6baf860c |
468 | (defmethod alien-type ((type (eql 'base-char)) &rest args) |
469 | (declare (ignore type args)) |
470 | 'c-call:char) |
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471 | |
6baf860c |
472 | (defmethod size-of ((type (eql 'base-char)) &rest args) |
473 | (declare (ignore type args)) |
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474 | 1) |
475 | |
6baf860c |
476 | (defmethod writer-function ((type (eql 'base-char)) &rest args) |
477 | (declare (ignore type args)) |
478 | #'(lambda (char location &optional (offset 0)) |
479 | (setf (sap-ref-8 location offset) (char-code char)))) |
fc358945 |
480 | |
6baf860c |
481 | (defmethod reader-function ((type (eql 'base-char)) &rest args) |
482 | (declare (ignore type args)) |
483 | #'(lambda (location &optional (offset 0)) |
484 | (code-char (sap-ref-8 location offset)))) |
fc358945 |
485 | |
486 | |
6baf860c |
487 | (defmethod alien-type ((type (eql 'string)) &rest args) |
488 | (declare (ignore type args)) |
489 | (alien-type 'pointer)) |
fc358945 |
490 | |
6baf860c |
491 | (defmethod size-of ((type (eql 'string)) &rest args) |
492 | (declare (ignore type args)) |
493 | (size-of 'pointer)) |
fc358945 |
494 | |
6baf860c |
495 | (defmethod to-alien-form (string (type (eql 'string)) &rest args) |
496 | (declare (ignore type args)) |
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497 | `(let ((string ,string)) |
498 | ;; Always copy strings to prevent seg fault due to GC |
499 | (copy-memory |
500 | (make-pointer (1+ (kernel:get-lisp-obj-address string))) |
501 | (1+ (length string))))) |
fc358945 |
502 | |
6baf860c |
503 | (defmethod to-alien-function ((type (eql 'string)) &rest args) |
504 | (declare (ignore type args)) |
505 | #'(lambda (string) |
506 | (copy-memory |
507 | (make-pointer (1+ (kernel:get-lisp-obj-address string))) |
508 | (1+ (length string))))) |
509 | |
510 | (defmethod from-alien-form (string (type (eql 'string)) &rest args) |
511 | (declare (ignore type args)) |
512 | `(let ((string ,string)) |
513 | (unless (null-pointer-p string) |
508d13a7 |
514 | (prog1 |
515 | (c-call::%naturalize-c-string string) |
516 | (deallocate-memory string))))) |
fc358945 |
517 | |
6baf860c |
518 | (defmethod from-alien-function ((type (eql 'string)) &rest args) |
519 | (declare (ignore type args)) |
520 | #'(lambda (string) |
521 | (unless (null-pointer-p string) |
508d13a7 |
522 | (prog1 |
523 | (c-call::%naturalize-c-string string) |
524 | (deallocate-memory string))))) |
fc358945 |
525 | |
6baf860c |
526 | (defmethod cleanup-form (string (type (eql 'string)) &rest args) |
527 | (declare (ignore type args)) |
528 | `(let ((string ,string)) |
529 | (unless (null-pointer-p string) |
530 | (deallocate-memory string)))) |
531 | |
532 | (defmethod cleanup-function ((type (eql 'string)) &rest args) |
7bde5a67 |
533 | (declare (ignore args)) |
6baf860c |
534 | #'(lambda (string) |
535 | (unless (null-pointer-p string) |
536 | (deallocate-memory string)))) |
537 | |
508d13a7 |
538 | (defmethod copy-from-alien-form (string (type (eql 'string)) &rest args) |
539 | (declare (ignore type args)) |
540 | `(let ((string ,string)) |
541 | (unless (null-pointer-p string) |
542 | (c-call::%naturalize-c-string string)))) |
543 | |
544 | (defmethod copy-from-alien-function ((type (eql 'string)) &rest args) |
545 | (declare (ignore type args)) |
546 | #'(lambda (string) |
547 | (unless (null-pointer-p string) |
548 | (c-call::%naturalize-c-string string)))) |
549 | |
6baf860c |
550 | (defmethod writer-function ((type (eql 'string)) &rest args) |
551 | (declare (ignore type args)) |
552 | #'(lambda (string location &optional (offset 0)) |
553 | (assert (null-pointer-p (sap-ref-sap location offset))) |
554 | (setf (sap-ref-sap location offset) |
555 | (copy-memory |
556 | (make-pointer (1+ (kernel:get-lisp-obj-address string))) |
557 | (1+ (length string)))))) |
558 | |
559 | (defmethod reader-function ((type (eql 'string)) &rest args) |
560 | (declare (ignore type args)) |
561 | #'(lambda (location &optional (offset 0)) |
562 | (unless (null-pointer-p (sap-ref-sap location offset)) |
563 | (c-call::%naturalize-c-string (sap-ref-sap location offset))))) |
564 | |
565 | (defmethod destroy-function ((type (eql 'string)) &rest args) |
566 | (declare (ignore type args)) |
567 | #'(lambda (location &optional (offset 0)) |
568 | (unless (null-pointer-p (sap-ref-sap location offset)) |
569 | (deallocate-memory (sap-ref-sap location offset)) |
570 | (setf (sap-ref-sap location offset) (make-pointer 0))))) |
571 | |
572 | |
573 | (defmethod alien-type ((type (eql 'pathname)) &rest args) |
574 | (declare (ignore type args)) |
575 | (alien-type 'string)) |
576 | |
577 | (defmethod size-of ((type (eql 'pathname)) &rest args) |
578 | (declare (ignore type args)) |
579 | (size-of 'string)) |
fc358945 |
580 | |
6baf860c |
581 | (defmethod to-alien-form (path (type (eql 'pathname)) &rest args) |
582 | (declare (ignore type args)) |
583 | (to-alien-form `(namestring (translate-logical-pathname ,path)) 'string)) |
584 | |
585 | (defmethod to-alien-function ((type (eql 'pathname)) &rest args) |
586 | (declare (ignore type args)) |
587 | (let ((string-function (to-alien-function 'string))) |
588 | #'(lambda (path) |
589 | (funcall string-function (namestring path))))) |
590 | |
591 | (defmethod from-alien-form (string (type (eql 'pathname)) &rest args) |
592 | (declare (ignore type args)) |
593 | `(parse-namestring ,(from-alien-form string 'string))) |
594 | |
595 | (defmethod from-alien-function ((type (eql 'pathname)) &rest args) |
596 | (declare (ignore type args)) |
597 | (let ((string-function (from-alien-function 'string))) |
598 | #'(lambda (string) |
599 | (parse-namestring (funcall string-function string))))) |
600 | |
601 | (defmethod cleanup-form (string (type (eql 'pathnanme)) &rest args) |
602 | (declare (ignore type args)) |
603 | (cleanup-form string 'string)) |
604 | |
605 | (defmethod cleanup-function ((type (eql 'pathnanme)) &rest args) |
606 | (declare (ignore type args)) |
607 | (cleanup-function 'string)) |
608 | |
609 | (defmethod writer-function ((type (eql 'pathname)) &rest args) |
610 | (declare (ignore type args)) |
611 | (let ((string-writer (writer-function 'string))) |
612 | #'(lambda (path location &optional (offset 0)) |
613 | (funcall string-writer (namestring path) location offset)))) |
614 | |
615 | (defmethod reader-function ((type (eql 'pathname)) &rest args) |
616 | (declare (ignore type args)) |
617 | (let ((string-reader (reader-function 'string))) |
618 | #'(lambda (location &optional (offset 0)) |
619 | (let ((string (funcall string-reader location offset))) |
620 | (when string |
621 | (parse-namestring string)))))) |
622 | |
623 | (defmethod destroy-function ((type (eql 'pathname)) &rest args) |
624 | (declare (ignore type args)) |
625 | (destroy-function 'string)) |
626 | |
627 | |
628 | (defmethod alien-type ((type (eql 'boolean)) &rest args) |
629 | (apply #'alien-type 'signed-byte args)) |
630 | |
631 | (defmethod size-of ((type (eql 'boolean)) &rest args) |
632 | (apply #'size-of 'signed-byte args)) |
633 | |
634 | (defmethod to-alien-form (boolean (type (eql 'boolean)) &rest args) |
635 | (declare (ignore type args)) |
fc358945 |
636 | `(if ,boolean 1 0)) |
637 | |
6baf860c |
638 | (defmethod to-alien-function ((type (eql 'boolean)) &rest args) |
639 | (declare (ignore type args)) |
640 | #'(lambda (boolean) |
641 | (if boolean 1 0))) |
642 | |
643 | (defmethod from-alien-form (boolean (type (eql 'boolean)) &rest args) |
644 | (declare (ignore type args)) |
645 | `(not (zerop ,boolean))) |
646 | |
647 | (defmethod from-alien-function ((type (eql 'boolean)) &rest args) |
648 | (declare (ignore type args)) |
649 | #'(lambda (boolean) |
650 | (not (zerop boolean)))) |
651 | |
652 | (defmethod writer-function ((type (eql 'boolean)) &rest args) |
653 | (declare (ignore type)) |
654 | (let ((writer (apply #'writer-function 'signed-byte args))) |
655 | #'(lambda (boolean location &optional (offset 0)) |
656 | (funcall writer (if boolean 1 0) location offset)))) |
657 | |
658 | (defmethod reader-function ((type (eql 'boolean)) &rest args) |
659 | (declare (ignore type)) |
660 | (let ((reader (apply #'reader-function 'signed-byte args))) |
661 | #'(lambda (location &optional (offset 0)) |
662 | (not (zerop (funcall reader location offset)))))) |
663 | |
664 | |
665 | (defmethod alien-type ((type (eql 'or)) &rest args) |
666 | (let ((alien-type (alien-type (first args)))) |
667 | (unless (every #'(lambda (type) |
668 | (eq alien-type (alien-type type))) |
669 | (rest args)) |
670 | (error "No common alien type specifier for union type: ~A" |
671 | (cons type args))) |
fc358945 |
672 | alien-type)) |
673 | |
6baf860c |
674 | (defmethod size-of ((type (eql 'or)) &rest args) |
675 | (declare (ignore type)) |
676 | (size-of (first args))) |
677 | |
678 | (defmethod to-alien-form (form (type (eql 'or)) &rest args) |
679 | (declare (ignore type)) |
680 | `(let ((value ,form)) |
681 | (etypecase value |
682 | ,@(mapcar |
683 | #'(lambda (type) |
684 | `(,type ,(to-alien-form 'value type))) |
685 | args)))) |
686 | |
687 | (defmethod to-alien-function ((type (eql 'or)) &rest types) |
688 | (declare (ignore type)) |
689 | (let ((functions (mapcar #'to-alien-function types))) |
690 | #'(lambda (value) |
691 | (loop |
692 | for function in functions |
693 | for type in types |
694 | when (typep value type) |
695 | do (return (funcall function value)) |
696 | finally (error "~S is not of type ~A" value `(or ,@types)))))) |
697 | |
698 | (defmethod alien-type ((type (eql 'system-area-pointer)) &rest args) |
699 | (declare (ignore type args)) |
fc358945 |
700 | 'system-area-pointer) |
701 | |
6baf860c |
702 | (defmethod size-of ((type (eql 'system-area-pointer)) &rest args) |
703 | (declare (ignore type args)) |
704 | +size-of-pointer+) |
fc358945 |
705 | |
6baf860c |
706 | (defmethod writer-function ((type (eql 'system-area-pointer)) &rest args) |
707 | (declare (ignore type args)) |
708 | #'(lambda (sap location &optional (offset 0)) |
709 | (setf (sap-ref-sap location offset) sap))) |
fc358945 |
710 | |
6baf860c |
711 | (defmethod reader-function ((type (eql 'system-area-pointer)) &rest args) |
712 | (declare (ignore type args)) |
713 | #'(lambda (location &optional (offset 0)) |
714 | (sap-ref-sap location offset))) |
fc358945 |
715 | |
716 | |
6baf860c |
717 | (defmethod alien-type ((type (eql 'null)) &rest args) |
718 | (declare (ignore type args)) |
719 | (alien-type 'pointer)) |
fc358945 |
720 | |
6baf860c |
721 | (defmethod size-of ((type (eql 'null)) &rest args) |
722 | (declare (ignore type args)) |
723 | (size-of 'pointer)) |
724 | |
725 | (defmethod to-alien-form (null (type (eql 'null)) &rest args) |
726 | (declare (ignore null type args)) |
fc358945 |
727 | `(make-pointer 0)) |
728 | |
6baf860c |
729 | (defmethod to-alien-function ((type (eql 'null)) &rest args) |
730 | (declare (ignore type args)) |
731 | #'(lambda (null) |
732 | (declare (ignore null)) |
733 | (make-pointer 0))) |
fc358945 |
734 | |
fc358945 |
735 | |
6baf860c |
736 | (defmethod alien-type ((type (eql 'nil)) &rest args) |
737 | (declare (ignore type args)) |
738 | 'c-call:void) |
739 | |
740 | (defmethod from-alien-function ((type (eql 'nil)) &rest args) |
741 | (declare (ignore type args)) |
742 | #'(lambda (value) |
743 | (declare (ignore value)) |
744 | (values))) |
508d13a7 |
745 | |
746 | |
747 | (defmethod alien-type ((type (eql 'copy-of)) &rest args) |
748 | (declare (ignore type)) |
749 | (alien-type (first args))) |
750 | |
751 | (defmethod size-of ((type (eql 'copy-of)) &rest args) |
752 | (declare (ignore type)) |
753 | (size-of (first args))) |
754 | |
755 | (defmethod to-alien-form (form (type (eql 'copy-of)) &rest args) |
756 | (declare (ignore type)) |
757 | (copy-to-alien-form form (first args))) |
758 | |
759 | (defmethod to-alien-function ((type (eql 'copy-of)) &rest args) |
760 | (declare (ignore type)) |
761 | (copy-to-alien-function (first args))) |
762 | |
763 | (defmethod from-alien-form (form (type (eql 'copy-of)) &rest args) |
764 | (declare (ignore type)) |
765 | (copy-from-alien-form form (first args))) |
766 | |
767 | (defmethod from-alien-function ((type (eql 'copy-of)) &rest args) |
768 | (declare (ignore type)) |
769 | (copy-from-alien-function (first args))) |
770 | |
771 | (export 'copy-of) |