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 | |
3840beb2 |
18 | ;; $Id: ffi.lisp,v 1.4 2004-11-09 10:04:35 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) |
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 | |
9adccb27 |
79 | (defmacro defbinding (name lambda-list return-type &rest docs/args) |
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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 |
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93 | (unless (member style '(:in :out :in-out :return)) |
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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 |
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100 | (list (if (namep expr) |
101 | (make-symbol (string expr)) |
102 | (gensym)) |
103 | expr (mklist type) style) args))))) |
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104 | |
105 | (%defbinding |
106 | c-name lisp-name (or supplied-lambda-list (nreverse lambda-list)) |
9adccb27 |
107 | return-type (reverse docs) (reverse args))))) |
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108 | |
109 | #+cmu |
9adccb27 |
110 | (defun %defbinding (foreign-name lisp-name lambda-list return-type docs args) |
111 | (ext:collect ((alien-types) (alien-bindings) (alien-parameters) |
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112 | (return-values) (cleanup-forms)) |
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113 | (dolist (arg args) |
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114 | (destructuring-bind (var expr type style) arg |
115 | (let ((declaration (alien-type type)) |
116 | (cleanup (cleanup-form var type))) |
117 | |
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118 | (cond |
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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))))))) |
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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 |
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150 | ,(alien-type return-type) |
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151 | ,@(alien-types)) |
152 | :extern ,foreign-name) |
153 | ,@(alien-bindings)) |
9adccb27 |
154 | ,(if return-type |
155 | `(values |
156 | (unwind-protect |
157 | ,(from-alien-form alien-funcall return-type) |
158 | ,@(cleanup-forms)) |
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159 | ,@(return-values)) |
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160 | `(progn |
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161 | (unwind-protect |
162 | ,alien-funcall |
163 | ,@(cleanup-forms)) |
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164 | (values ,@(return-values))))))))) |
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165 | |
166 | |
9adccb27 |
167 | ;;; Creates bindings at runtime |
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168 | (defun mkbinding (name return-type &rest arg-types) |
9adccb27 |
169 | (declare (optimize (ext:inhibit-warnings 3))) |
170 | (let* ((ftype |
171 | `(function ,@(mapcar #'alien-type (cons return-type arg-types)))) |
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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)))) |
9adccb27 |
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 |
9adccb27 |
184 | (funcall translate-return-value |
185 | (apply #'alien:alien-funcall alien args)) |
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186 | (mapc #'funcall cleanup-arguments args))))) |
187 | |
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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 | |
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205 | |
206 | ;;;; Definitons and translations of fundamental types |
207 | |
9adccb27 |
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 | |
9adccb27 |
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.") |
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232 | |
9adccb27 |
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 | |
9adccb27 |
237 | (def-type-method writer-function ()) |
238 | (def-type-method reader-function ()) |
239 | (def-type-method destroy-function ()) |
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240 | |
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241 | |
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242 | ;; Sizes of fundamental C types in bytes (8 bits) |
243 | (defconstant +size-of-short+ 2) |
244 | (defconstant +size-of-int+ 4) |
245 | (defconstant +size-of-long+ 4) |
246 | (defconstant +size-of-pointer+ 4) |
247 | (defconstant +size-of-float+ 4) |
248 | (defconstant +size-of-double+ 8) |
249 | |
250 | ;; Sizes of fundamental C types in bits |
251 | (defconstant +bits-of-byte+ 8) |
252 | (defconstant +bits-of-short+ 16) |
253 | (defconstant +bits-of-int+ 32) |
254 | (defconstant +bits-of-long+ 32) |
255 | |
256 | |
9adccb27 |
257 | (deftype int () '(signed-byte #.+bits-of-int+)) |
258 | (deftype unsigned-int () '(unsigned-byte #.+bits-of-int+)) |
259 | (deftype long () '(signed-byte #.+bits-of-long+)) |
260 | (deftype unsigned-long () '(unsigned-byte #.+bits-of-long+)) |
261 | (deftype short () '(signed-byte #.+bits-of-short+)) |
262 | (deftype unsigned-short () '(unsigned-byte #.+bits-of-short+)) |
263 | (deftype signed (&optional (size '*)) `(signed-byte ,size)) |
264 | (deftype unsigned (&optional (size '*)) `(unsigned-byte ,size)) |
265 | (deftype char () 'base-char) |
266 | (deftype pointer () 'system-area-pointer) |
267 | (deftype boolean (&optional (size '*)) (declare (ignore size)) `(member t nil)) |
268 | ;(deftype invalid () nil) |
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269 | |
270 | |
9adccb27 |
271 | (defmethod to-alien-form (form (type t) &rest args) |
272 | (declare (ignore type args)) |
273 | form) |
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274 | |
9adccb27 |
275 | (defmethod to-alien-function ((type t) &rest args) |
276 | (declare (ignore type args)) |
277 | #'identity) |
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278 | |
9adccb27 |
279 | (defmethod from-alien-form (form (type t) &rest args) |
280 | (declare (ignore type args)) |
281 | form) |
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282 | |
9adccb27 |
283 | (defmethod from-alien-function ((type t) &rest args) |
284 | (declare (ignore type args)) |
285 | #'identity) |
286 | |
287 | (defmethod cleanup-form (form (type t) &rest args) |
288 | (declare (ignore form type args)) |
289 | nil) |
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290 | |
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291 | (defmethod cleanup-function ((type t) &rest args) |
292 | (declare (ignore type args)) |
293 | #'identity) |
294 | |
295 | (defmethod destroy-function ((type t) &rest args) |
296 | (declare (ignore type args)) |
297 | #'(lambda (location offset) |
298 | (declare (ignore location offset)))) |
299 | |
300 | |
301 | (defmethod alien-type ((type (eql 'signed-byte)) &rest args) |
302 | (declare (ignore type)) |
303 | (destructuring-bind (&optional (size '*)) args |
304 | (ecase size |
305 | (#.+bits-of-byte+ '(signed-byte 8)) |
306 | (#.+bits-of-short+ 'c-call:short) |
307 | ((* #.+bits-of-int+) 'c-call:int) |
308 | (#.+bits-of-long+ 'c-call:long)))) |
309 | |
310 | (defmethod size-of ((type (eql 'signed-byte)) &rest args) |
311 | (declare (ignore type)) |
312 | (destructuring-bind (&optional (size '*)) args |
313 | (ecase size |
314 | (#.+bits-of-byte+ 1) |
315 | (#.+bits-of-short+ +size-of-short+) |
316 | ((* #.+bits-of-int+) +size-of-int+) |
317 | (#.+bits-of-long+ +size-of-long+)))) |
318 | |
319 | (defmethod writer-function ((type (eql 'signed-byte)) &rest args) |
320 | (declare (ignore type)) |
321 | (destructuring-bind (&optional (size '*)) args |
322 | (let ((size (if (eq size '*) +bits-of-int+ size))) |
323 | (ecase size |
324 | (8 #'(lambda (value location &optional (offset 0)) |
325 | (setf (signed-sap-ref-8 location offset) value))) |
326 | (16 #'(lambda (value location &optional (offset 0)) |
327 | (setf (signed-sap-ref-16 location offset) value))) |
328 | (32 #'(lambda (value location &optional (offset 0)) |
329 | (setf (signed-sap-ref-32 location offset) value))) |
330 | (64 #'(lambda (value location &optional (offset 0)) |
331 | (setf (signed-sap-ref-64 location offset) value))))))) |
332 | |
333 | (defmethod reader-function ((type (eql 'signed-byte)) &rest args) |
334 | (declare (ignore type)) |
335 | (destructuring-bind (&optional (size '*)) args |
336 | (let ((size (if (eq size '*) +bits-of-int+ size))) |
337 | (ecase size |
338 | (8 #'(lambda (sap &optional (offset 0)) |
339 | (signed-sap-ref-8 sap offset))) |
340 | (16 #'(lambda (sap &optional (offset 0)) |
341 | (signed-sap-ref-16 sap offset))) |
342 | (32 #'(lambda (sap &optional (offset 0)) |
343 | (signed-sap-ref-32 sap offset))) |
344 | (64 #'(lambda (sap &optional (offset 0)) |
345 | (signed-sap-ref-64 sap offset))))))) |
346 | |
347 | (defmethod alien-type ((type (eql 'unsigned-byte)) &rest args) |
348 | (destructuring-bind (&optional (size '*)) args |
349 | (ecase size |
350 | (#.+bits-of-byte+ '(unsigned-byte 8)) |
351 | (#.+bits-of-short+ 'c-call:unsigned-short) |
352 | ((* #.+bits-of-int+) 'c-call:unsigned-int) |
353 | (#.+bits-of-long+ 'c-call:unsigned-long)))) |
354 | |
355 | (defmethod size-of ((type (eql 'unsigned-byte)) &rest args) |
356 | (apply #'size-of 'signed args)) |
357 | |
358 | (defmethod writer-function ((type (eql 'unsigned-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 (sap-ref-8 location offset) value))) |
365 | (16 #'(lambda (value location &optional (offset 0)) |
366 | (setf (sap-ref-16 location offset) value))) |
367 | (32 #'(lambda (value location &optional (offset 0)) |
368 | (setf (sap-ref-32 location offset) value))) |
369 | (64 #'(lambda (value location &optional (offset 0)) |
370 | (setf (sap-ref-64 location offset) value))))))) |
371 | |
372 | (defmethod reader-function ((type (eql 'unsigned-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 | (sap-ref-8 sap offset))) |
379 | (16 #'(lambda (sap &optional (offset 0)) |
380 | (sap-ref-16 sap offset))) |
381 | (32 #'(lambda (sap &optional (offset 0)) |
382 | (sap-ref-32 sap offset))) |
383 | (64 #'(lambda (sap &optional (offset 0)) |
384 | (sap-ref-64 sap offset))))))) |
385 | |
386 | |
387 | (defmethod alien-type ((type (eql 'integer)) &rest args) |
388 | (declare (ignore type args)) |
389 | (alien-type 'signed-byte)) |
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390 | |
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391 | (defmethod size-of ((type (eql 'integer)) &rest args) |
392 | (declare (ignore type args)) |
393 | (size-of 'signed-byte)) |
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394 | |
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395 | |
9adccb27 |
396 | (defmethod alien-type ((type (eql 'fixnum)) &rest args) |
397 | (declare (ignore type args)) |
398 | (alien-type 'signed-byte)) |
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399 | |
9adccb27 |
400 | (defmethod size-of ((type (eql 'fixnum)) &rest args) |
401 | (declare (ignore type args)) |
402 | (size-of 'signed-byte)) |
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403 | |
404 | |
9adccb27 |
405 | (defmethod alien-type ((type (eql 'single-float)) &rest args) |
406 | (declare (ignore type args)) |
407 | 'alien:single-float) |
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408 | |
9adccb27 |
409 | (defmethod size-of ((type (eql 'single-float)) &rest args) |
410 | (declare (ignore type args)) |
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411 | +size-of-float+) |
412 | |
9adccb27 |
413 | (defmethod writer-function ((type (eql 'single-float)) &rest args) |
414 | (declare (ignore type args)) |
415 | #'(lambda (value location &optional (offset 0)) |
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416 | (setf (sap-ref-single location offset) (coerce value 'single-float)))) |
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417 | |
9adccb27 |
418 | (defmethod reader-function ((type (eql 'single-float)) &rest args) |
419 | (declare (ignore type args)) |
420 | #'(lambda (sap &optional (offset 0)) |
421 | (sap-ref-single sap offset))) |
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422 | |
423 | |
9adccb27 |
424 | (defmethod alien-type ((type (eql 'double-float)) &rest args) |
425 | (declare (ignore type args)) |
426 | 'alien:double-float) |
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427 | |
9adccb27 |
428 | (defmethod size-of ((type (eql 'double-float)) &rest args) |
429 | (declare (ignore type args)) |
430 | +size-of-float+) |
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431 | |
9adccb27 |
432 | (defmethod writer-function ((type (eql 'double-float)) &rest args) |
433 | (declare (ignore type args)) |
434 | #'(lambda (value location &optional (offset 0)) |
435 | (setf (sap-ref-double location offset) (coerce value 'double-float)))) |
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436 | |
9adccb27 |
437 | (defmethod reader-function ((type (eql 'double-float)) &rest args) |
438 | (declare (ignore type args)) |
439 | #'(lambda (sap &optional (offset 0)) |
440 | (sap-ref-double sap offset))) |
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441 | |
442 | |
9adccb27 |
443 | (defmethod alien-type ((type (eql 'base-char)) &rest args) |
444 | (declare (ignore type args)) |
445 | 'c-call:char) |
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446 | |
9adccb27 |
447 | (defmethod size-of ((type (eql 'base-char)) &rest args) |
448 | (declare (ignore type args)) |
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449 | 1) |
450 | |
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451 | (defmethod writer-function ((type (eql 'base-char)) &rest args) |
452 | (declare (ignore type args)) |
453 | #'(lambda (char location &optional (offset 0)) |
454 | (setf (sap-ref-8 location offset) (char-code char)))) |
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455 | |
9adccb27 |
456 | (defmethod reader-function ((type (eql 'base-char)) &rest args) |
457 | (declare (ignore type args)) |
458 | #'(lambda (location &optional (offset 0)) |
459 | (code-char (sap-ref-8 location offset)))) |
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460 | |
461 | |
9adccb27 |
462 | (defmethod alien-type ((type (eql 'string)) &rest args) |
463 | (declare (ignore type args)) |
464 | (alien-type 'pointer)) |
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465 | |
9adccb27 |
466 | (defmethod size-of ((type (eql 'string)) &rest args) |
467 | (declare (ignore type args)) |
468 | (size-of 'pointer)) |
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469 | |
9adccb27 |
470 | (defmethod to-alien-form (string (type (eql 'string)) &rest args) |
471 | (declare (ignore type args)) |
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472 | `(let ((string ,string)) |
473 | ;; Always copy strings to prevent seg fault due to GC |
474 | (copy-memory |
475 | (make-pointer (1+ (kernel:get-lisp-obj-address string))) |
476 | (1+ (length string))))) |
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477 | |
9adccb27 |
478 | (defmethod to-alien-function ((type (eql 'string)) &rest args) |
479 | (declare (ignore type args)) |
480 | #'(lambda (string) |
481 | (copy-memory |
482 | (make-pointer (1+ (kernel:get-lisp-obj-address string))) |
483 | (1+ (length string))))) |
484 | |
485 | (defmethod from-alien-form (string (type (eql 'string)) &rest args) |
486 | (declare (ignore type args)) |
487 | `(let ((string ,string)) |
488 | (unless (null-pointer-p string) |
489 | (c-call::%naturalize-c-string string)))) |
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490 | |
9adccb27 |
491 | (defmethod from-alien-function ((type (eql 'string)) &rest args) |
492 | (declare (ignore type args)) |
493 | #'(lambda (string) |
494 | (unless (null-pointer-p string) |
495 | (c-call::%naturalize-c-string string)))) |
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496 | |
9adccb27 |
497 | (defmethod cleanup-form (string (type (eql 'string)) &rest args) |
498 | (declare (ignore type args)) |
499 | `(let ((string ,string)) |
500 | (unless (null-pointer-p string) |
501 | (deallocate-memory string)))) |
502 | |
503 | (defmethod cleanup-function ((type (eql 'string)) &rest args) |
8755b1a5 |
504 | (declare (ignore args)) |
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505 | #'(lambda (string) |
506 | (unless (null-pointer-p string) |
507 | (deallocate-memory string)))) |
508 | |
509 | (defmethod writer-function ((type (eql 'string)) &rest args) |
510 | (declare (ignore type args)) |
511 | #'(lambda (string location &optional (offset 0)) |
512 | (assert (null-pointer-p (sap-ref-sap location offset))) |
513 | (setf (sap-ref-sap location offset) |
514 | (copy-memory |
515 | (make-pointer (1+ (kernel:get-lisp-obj-address string))) |
516 | (1+ (length string)))))) |
517 | |
518 | (defmethod reader-function ((type (eql 'string)) &rest args) |
519 | (declare (ignore type args)) |
520 | #'(lambda (location &optional (offset 0)) |
521 | (unless (null-pointer-p (sap-ref-sap location offset)) |
522 | (c-call::%naturalize-c-string (sap-ref-sap location offset))))) |
523 | |
524 | (defmethod destroy-function ((type (eql 'string)) &rest args) |
525 | (declare (ignore type args)) |
526 | #'(lambda (location &optional (offset 0)) |
527 | (unless (null-pointer-p (sap-ref-sap location offset)) |
528 | (deallocate-memory (sap-ref-sap location offset)) |
529 | (setf (sap-ref-sap location offset) (make-pointer 0))))) |
530 | |
531 | |
532 | (defmethod alien-type ((type (eql 'pathname)) &rest args) |
533 | (declare (ignore type args)) |
534 | (alien-type 'string)) |
535 | |
536 | (defmethod size-of ((type (eql 'pathname)) &rest args) |
537 | (declare (ignore type args)) |
538 | (size-of 'string)) |
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539 | |
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540 | (defmethod to-alien-form (path (type (eql 'pathname)) &rest args) |
541 | (declare (ignore type args)) |
542 | (to-alien-form `(namestring (translate-logical-pathname ,path)) 'string)) |
543 | |
544 | (defmethod to-alien-function ((type (eql 'pathname)) &rest args) |
545 | (declare (ignore type args)) |
546 | (let ((string-function (to-alien-function 'string))) |
547 | #'(lambda (path) |
548 | (funcall string-function (namestring path))))) |
549 | |
550 | (defmethod from-alien-form (string (type (eql 'pathname)) &rest args) |
551 | (declare (ignore type args)) |
552 | `(parse-namestring ,(from-alien-form string 'string))) |
553 | |
554 | (defmethod from-alien-function ((type (eql 'pathname)) &rest args) |
555 | (declare (ignore type args)) |
556 | (let ((string-function (from-alien-function 'string))) |
557 | #'(lambda (string) |
558 | (parse-namestring (funcall string-function string))))) |
559 | |
560 | (defmethod cleanup-form (string (type (eql 'pathnanme)) &rest args) |
561 | (declare (ignore type args)) |
562 | (cleanup-form string 'string)) |
563 | |
564 | (defmethod cleanup-function ((type (eql 'pathnanme)) &rest args) |
565 | (declare (ignore type args)) |
566 | (cleanup-function 'string)) |
567 | |
568 | (defmethod writer-function ((type (eql 'pathname)) &rest args) |
569 | (declare (ignore type args)) |
570 | (let ((string-writer (writer-function 'string))) |
571 | #'(lambda (path location &optional (offset 0)) |
572 | (funcall string-writer (namestring path) location offset)))) |
573 | |
574 | (defmethod reader-function ((type (eql 'pathname)) &rest args) |
575 | (declare (ignore type args)) |
576 | (let ((string-reader (reader-function 'string))) |
577 | #'(lambda (location &optional (offset 0)) |
578 | (let ((string (funcall string-reader location offset))) |
579 | (when string |
580 | (parse-namestring string)))))) |
581 | |
582 | (defmethod destroy-function ((type (eql 'pathname)) &rest args) |
583 | (declare (ignore type args)) |
584 | (destroy-function 'string)) |
585 | |
586 | |
587 | (defmethod alien-type ((type (eql 'boolean)) &rest args) |
588 | (apply #'alien-type 'signed-byte args)) |
589 | |
590 | (defmethod size-of ((type (eql 'boolean)) &rest args) |
591 | (apply #'size-of 'signed-byte args)) |
592 | |
593 | (defmethod to-alien-form (boolean (type (eql 'boolean)) &rest args) |
594 | (declare (ignore type args)) |
310da1d5 |
595 | `(if ,boolean 1 0)) |
596 | |
9adccb27 |
597 | (defmethod to-alien-function ((type (eql 'boolean)) &rest args) |
598 | (declare (ignore type args)) |
599 | #'(lambda (boolean) |
600 | (if boolean 1 0))) |
601 | |
602 | (defmethod from-alien-form (boolean (type (eql 'boolean)) &rest args) |
603 | (declare (ignore type args)) |
604 | `(not (zerop ,boolean))) |
605 | |
606 | (defmethod from-alien-function ((type (eql 'boolean)) &rest args) |
607 | (declare (ignore type args)) |
608 | #'(lambda (boolean) |
609 | (not (zerop boolean)))) |
610 | |
611 | (defmethod writer-function ((type (eql 'boolean)) &rest args) |
612 | (declare (ignore type)) |
613 | (let ((writer (apply #'writer-function 'signed-byte args))) |
614 | #'(lambda (boolean location &optional (offset 0)) |
615 | (funcall writer (if boolean 1 0) location offset)))) |
616 | |
617 | (defmethod reader-function ((type (eql 'boolean)) &rest args) |
618 | (declare (ignore type)) |
619 | (let ((reader (apply #'reader-function 'signed-byte args))) |
620 | #'(lambda (location &optional (offset 0)) |
621 | (not (zerop (funcall reader location offset)))))) |
622 | |
623 | |
624 | (defmethod alien-type ((type (eql 'or)) &rest args) |
625 | (let ((alien-type (alien-type (first args)))) |
626 | (unless (every #'(lambda (type) |
627 | (eq alien-type (alien-type type))) |
628 | (rest args)) |
629 | (error "No common alien type specifier for union type: ~A" |
630 | (cons type args))) |
310da1d5 |
631 | alien-type)) |
632 | |
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633 | (defmethod size-of ((type (eql 'or)) &rest args) |
634 | (declare (ignore type)) |
635 | (size-of (first args))) |
636 | |
637 | (defmethod to-alien-form (form (type (eql 'or)) &rest args) |
638 | (declare (ignore type)) |
639 | `(let ((value ,form)) |
640 | (etypecase value |
641 | ,@(mapcar |
642 | #'(lambda (type) |
643 | `(,type ,(to-alien-form 'value type))) |
644 | args)))) |
645 | |
646 | (defmethod to-alien-function ((type (eql 'or)) &rest types) |
647 | (declare (ignore type)) |
648 | (let ((functions (mapcar #'to-alien-function types))) |
649 | #'(lambda (value) |
650 | (loop |
651 | for function in functions |
652 | for type in types |
653 | when (typep value type) |
654 | do (return (funcall function value)) |
655 | finally (error "~S is not of type ~A" value `(or ,@types)))))) |
656 | |
657 | (defmethod alien-type ((type (eql 'system-area-pointer)) &rest args) |
658 | (declare (ignore type args)) |
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659 | 'system-area-pointer) |
660 | |
9adccb27 |
661 | (defmethod size-of ((type (eql 'system-area-pointer)) &rest args) |
662 | (declare (ignore type args)) |
663 | +size-of-pointer+) |
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664 | |
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665 | (defmethod writer-function ((type (eql 'system-area-pointer)) &rest args) |
666 | (declare (ignore type args)) |
667 | #'(lambda (sap location &optional (offset 0)) |
668 | (setf (sap-ref-sap location offset) sap))) |
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669 | |
9adccb27 |
670 | (defmethod reader-function ((type (eql 'system-area-pointer)) &rest args) |
671 | (declare (ignore type args)) |
672 | #'(lambda (location &optional (offset 0)) |
673 | (sap-ref-sap location offset))) |
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674 | |
675 | |
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676 | (defmethod alien-type ((type (eql 'null)) &rest args) |
677 | (declare (ignore type args)) |
678 | (alien-type 'pointer)) |
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679 | |
9adccb27 |
680 | (defmethod size-of ((type (eql 'null)) &rest args) |
681 | (declare (ignore type args)) |
682 | (size-of 'pointer)) |
683 | |
684 | (defmethod to-alien-form (null (type (eql 'null)) &rest args) |
685 | (declare (ignore null type args)) |
310da1d5 |
686 | `(make-pointer 0)) |
687 | |
9adccb27 |
688 | (defmethod to-alien-function ((type (eql 'null)) &rest args) |
689 | (declare (ignore type args)) |
690 | #'(lambda (null) |
691 | (declare (ignore null)) |
692 | (make-pointer 0))) |
310da1d5 |
693 | |
310da1d5 |
694 | |
9adccb27 |
695 | (defmethod alien-type ((type (eql 'nil)) &rest args) |
696 | (declare (ignore type args)) |
697 | 'c-call:void) |
698 | |
699 | (defmethod from-alien-function ((type (eql 'nil)) &rest args) |
700 | (declare (ignore type args)) |
701 | #'(lambda (value) |
702 | (declare (ignore value)) |
703 | (values))) |