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1 | ;; Common Lisp bindings for GTK+ v1.2.x |
2 | ;; Copyright (C) 1999 Espen S. Johnsen <espejohn@online.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 | |
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18 | ;; $Id: glib.lisp,v 1.28 2005-04-17 21:44:27 espen Exp $ |
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19 | |
20 | |
21 | (in-package "GLIB") |
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22 | |
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23 | (use-prefix "g") |
24 | |
25 | |
26 | ;;;; Memory management |
27 | |
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28 | (defbinding (allocate-memory "g_malloc0") () pointer |
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29 | (size unsigned-long)) |
30 | |
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31 | (defbinding (reallocate-memory "g_realloc") () pointer |
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32 | (address pointer) |
33 | (size unsigned-long)) |
34 | |
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35 | (defbinding (deallocate-memory "g_free") () nil |
36 | (address pointer)) |
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37 | ;; (defun deallocate-memory (address) |
38 | ;; (declare (ignore address))) |
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39 | |
40 | (defun copy-memory (from length &optional (to (allocate-memory length))) |
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41 | #+cmu(system-area-copy from 0 to 0 (* 8 length)) |
42 | #+sbcl(system-area-ub8-copy from 0 to 0 length) |
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43 | to) |
44 | |
45 | |
c4e9d221 |
46 | ;;;; User data mechanism |
47 | |
48 | (internal *user-data* *user-data-count*) |
49 | |
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50 | (defvar *user-data* (make-hash-table)) |
51 | (defvar *user-data-count* 0) |
52 | |
53 | (defun register-user-data (object &optional destroy-function) |
54 | (check-type destroy-function (or null symbol function)) |
55 | (incf *user-data-count*) |
56 | (setf |
57 | (gethash *user-data-count* *user-data*) |
58 | (cons object destroy-function)) |
59 | *user-data-count*) |
60 | |
61 | (defun find-user-data (id) |
62 | (check-type id fixnum) |
63 | (multiple-value-bind (user-data p) (gethash id *user-data*) |
64 | (values (car user-data) p))) |
65 | |
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66 | (defun user-data-exists-p (id) |
67 | (nth-value 1 (find-user-data id))) |
68 | |
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69 | (defun update-user-data (id object) |
70 | (check-type id fixnum) |
71 | (multiple-value-bind (user-data exists-p) (gethash id *user-data*) |
72 | (cond |
73 | ((not exists-p) (error "User data id ~A does not exist" id)) |
74 | (t |
75 | (when (cdr user-data) |
76 | (funcall (cdr user-data) (car user-data))) |
77 | (setf (car user-data) object))))) |
78 | |
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79 | (defun destroy-user-data (id) |
80 | (check-type id fixnum) |
81 | (let ((user-data (gethash id *user-data*))) |
82 | (when (cdr user-data) |
83 | (funcall (cdr user-data) (car user-data)))) |
84 | (remhash id *user-data*)) |
85 | |
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86 | |
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87 | ;;;; Quarks |
88 | |
89 | (deftype quark () 'unsigned) |
90 | |
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91 | (defbinding %quark-from-string () quark |
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92 | (string string)) |
93 | |
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94 | (defun quark-intern (object) |
95 | (etypecase object |
96 | (quark object) |
97 | (string (%quark-from-string object)) |
98 | (symbol (%quark-from-string (format nil "clg-~A:~A" |
99 | (package-name (symbol-package object)) |
100 | object))))) |
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101 | |
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102 | (defbinding quark-to-string () (copy-of string) |
103 | (quark quark)) |
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104 | |
105 | |
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106 | ;;;; Linked list (GList) |
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107 | |
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108 | (deftype glist (type) |
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109 | `(or (null (cons ,type list)))) |
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110 | |
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111 | (defbinding (%glist-append "g_list_append") () pointer |
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112 | (glist pointer) |
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113 | (nil null)) |
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114 | |
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115 | (defun make-glist (type list) |
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116 | (loop |
117 | with writer = (writer-function type) |
118 | for element in list |
119 | as glist = (%glist-append (or glist (make-pointer 0))) |
120 | do (funcall writer element glist) |
121 | finally (return glist))) |
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122 | |
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123 | (defun glist-next (glist) |
124 | (unless (null-pointer-p glist) |
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125 | (sap-ref-sap glist +size-of-pointer+))) |
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126 | |
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127 | ;; Also used for gslists |
128 | (defun map-glist (seqtype function glist element-type) |
129 | (let ((reader (reader-function element-type))) |
130 | (case seqtype |
131 | ((nil) |
132 | (loop |
133 | as tmp = glist then (glist-next tmp) |
134 | until (null-pointer-p tmp) |
135 | do (funcall function (funcall reader tmp)))) |
136 | (list |
137 | (loop |
138 | as tmp = glist then (glist-next tmp) |
139 | until (null-pointer-p tmp) |
140 | collect (funcall function (funcall reader tmp)))) |
141 | (t |
142 | (coerce |
143 | (loop |
144 | as tmp = glist then (glist-next tmp) |
145 | until (null-pointer-p tmp) |
146 | collect (funcall function (funcall reader tmp))) |
147 | seqtype))))) |
148 | |
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149 | (defbinding (glist-free "g_list_free") () nil |
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150 | (glist pointer)) |
151 | |
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152 | (defun destroy-glist (glist element-type) |
153 | (loop |
154 | with destroy = (destroy-function element-type) |
155 | as tmp = glist then (glist-next tmp) |
156 | until (null-pointer-p tmp) |
157 | do (funcall destroy tmp 0)) |
158 | (glist-free glist)) |
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159 | |
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160 | (defmethod alien-type ((type (eql 'glist)) &rest args) |
161 | (declare (ignore type args)) |
162 | (alien-type 'pointer)) |
163 | |
164 | (defmethod size-of ((type (eql 'glist)) &rest args) |
165 | (declare (ignore type args)) |
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166 | (size-of 'pointer)) |
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167 | |
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168 | (defmethod to-alien-form (list (type (eql 'glist)) &rest args) |
169 | (declare (ignore type)) |
170 | (destructuring-bind (element-type) args |
171 | `(make-glist ',element-type ,list))) |
172 | |
173 | (defmethod to-alien-function ((type (eql 'glist)) &rest args) |
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174 | (declare (ignore type)) |
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175 | (destructuring-bind (element-type) args |
176 | #'(lambda (list) |
177 | (make-glist element-type list)))) |
178 | |
179 | (defmethod from-alien-form (glist (type (eql 'glist)) &rest args) |
180 | (declare (ignore type)) |
181 | (destructuring-bind (element-type) args |
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182 | `(let ((glist ,glist)) |
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183 | (unwind-protect |
184 | (map-glist 'list #'identity glist ',element-type) |
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185 | (destroy-glist glist ',element-type))))) |
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186 | |
187 | (defmethod from-alien-function ((type (eql 'glist)) &rest args) |
188 | (declare (ignore type)) |
189 | (destructuring-bind (element-type) args |
190 | #'(lambda (glist) |
191 | (unwind-protect |
192 | (map-glist 'list #'identity glist element-type) |
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193 | (destroy-glist glist element-type))))) |
194 | |
195 | (defmethod copy-from-alien-form (glist (type (eql 'glist)) &rest args) |
196 | (declare (ignore type)) |
197 | (destructuring-bind (element-type) args |
198 | `(map-glist 'list #'identity ,glist ',element-type))) |
199 | |
200 | (defmethod copy-from-alien-function ((type (eql 'glist)) &rest args) |
201 | (declare (ignore type)) |
202 | (destructuring-bind (element-type) args |
203 | #'(lambda (glist) |
204 | (map-glist 'list #'identity glist element-type)))) |
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205 | |
206 | (defmethod cleanup-form (glist (type (eql 'glist)) &rest args) |
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207 | (declare (ignore type)) |
208 | (destructuring-bind (element-type) args |
209 | `(destroy-glist ,glist ',element-type))) |
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210 | |
211 | (defmethod cleanup-function ((type (eql 'glist)) &rest args) |
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212 | (declare (ignore type)) |
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213 | (destructuring-bind (element-type) args |
214 | #'(lambda (glist) |
215 | (destroy-glist glist element-type)))) |
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216 | |
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217 | (defmethod writer-function ((type (eql 'glist)) &rest args) |
218 | (declare (ignore type)) |
219 | (destructuring-bind (element-type) args |
220 | #'(lambda (list location &optional (offset 0)) |
221 | (setf |
222 | (sap-ref-sap location offset) |
223 | (make-glist element-type list))))) |
224 | |
225 | (defmethod reader-function ((type (eql 'glist)) &rest args) |
226 | (declare (ignore type)) |
227 | (destructuring-bind (element-type) args |
228 | #'(lambda (location &optional (offset 0)) |
229 | (unless (null-pointer-p (sap-ref-sap location offset)) |
230 | (map-glist 'list #'identity (sap-ref-sap location offset) element-type))))) |
231 | |
232 | (defmethod destroy-function ((type (eql 'glist)) &rest args) |
233 | (declare (ignore type)) |
234 | (destructuring-bind (element-type) args |
235 | #'(lambda (location &optional (offset 0)) |
236 | (unless (null-pointer-p (sap-ref-sap location offset)) |
237 | (destroy-glist (sap-ref-sap location offset) element-type) |
238 | (setf (sap-ref-sap location offset) (make-pointer 0)))))) |
239 | |
240 | |
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241 | |
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242 | ;;;; Single linked list (GSList) |
243 | |
244 | (deftype gslist (type) `(or (null (cons ,type list)))) |
245 | |
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246 | (defbinding (%gslist-prepend "g_slist_prepend") () pointer |
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247 | (gslist pointer) |
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248 | (nil null)) |
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249 | |
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250 | (defun make-gslist (type list) |
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251 | (loop |
252 | with writer = (writer-function type) |
253 | for element in (reverse list) |
254 | as gslist = (%gslist-prepend (or gslist (make-pointer 0))) |
255 | do (funcall writer element gslist) |
256 | finally (return gslist))) |
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257 | |
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258 | (defbinding (gslist-free "g_slist_free") () nil |
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259 | (gslist pointer)) |
260 | |
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261 | (defun destroy-gslist (gslist element-type) |
262 | (loop |
263 | with destroy = (destroy-function element-type) |
264 | as tmp = gslist then (glist-next tmp) |
265 | until (null-pointer-p tmp) |
266 | do (funcall destroy tmp 0)) |
267 | (gslist-free gslist)) |
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268 | |
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269 | (defmethod alien-type ((type (eql 'gslist)) &rest args) |
270 | (declare (ignore type args)) |
271 | (alien-type 'pointer)) |
272 | |
273 | (defmethod size-of ((type (eql 'gslist)) &rest args) |
274 | (declare (ignore type args)) |
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275 | (size-of 'pointer)) |
276 | |
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277 | (defmethod to-alien-form (list (type (eql 'gslist)) &rest args) |
278 | (declare (ignore type)) |
279 | (destructuring-bind (element-type) args |
280 | `(make-sglist ',element-type ,list))) |
281 | |
282 | (defmethod to-alien-function ((type (eql 'gslist)) &rest args) |
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283 | (declare (ignore type)) |
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284 | (destructuring-bind (element-type) args |
285 | #'(lambda (list) |
286 | (make-gslist element-type list)))) |
287 | |
288 | (defmethod from-alien-form (gslist (type (eql 'gslist)) &rest args) |
289 | (declare (ignore type)) |
290 | (destructuring-bind (element-type) args |
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291 | `(let ((gslist ,gslist)) |
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292 | (unwind-protect |
293 | (map-glist 'list #'identity gslist ',element-type) |
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294 | (destroy-gslist gslist ',element-type))))) |
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295 | |
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296 | (defmethod from-alien-function ((type (eql 'gslist)) &rest args) |
297 | (declare (ignore type)) |
298 | (destructuring-bind (element-type) args |
299 | #'(lambda (gslist) |
300 | (unwind-protect |
301 | (map-glist 'list #'identity gslist element-type) |
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302 | (destroy-gslist gslist element-type))))) |
303 | |
304 | (defmethod copy-from-alien-form (gslist (type (eql 'gslist)) &rest args) |
305 | (declare (ignore type)) |
306 | (destructuring-bind (element-type) args |
307 | `(map-glist 'list #'identity ,gslist ',element-type))) |
308 | |
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309 | (defmethod copy-from-alien-function ((type (eql 'gslist)) &rest args) |
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310 | (declare (ignore type)) |
311 | (destructuring-bind (element-type) args |
312 | #'(lambda (gslist) |
313 | (map-glist 'list #'identity gslist element-type)))) |
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314 | |
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315 | (defmethod cleanup-form (gslist (type (eql 'gslist)) &rest args) |
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316 | (declare (ignore type)) |
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317 | (destructuring-bind (element-type) args |
318 | `(destroy-gslist ,gslist ',element-type))) |
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319 | |
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320 | (defmethod cleanup-function ((type (eql 'gslist)) &rest args) |
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321 | (declare (ignore type)) |
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322 | (destructuring-bind (element-type) args |
323 | #'(lambda (gslist) |
324 | (destroy-gslist gslist element-type)))) |
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325 | |
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326 | (defmethod writer-function ((type (eql 'gslist)) &rest args) |
327 | (declare (ignore type)) |
328 | (destructuring-bind (element-type) args |
329 | #'(lambda (list location &optional (offset 0)) |
330 | (setf |
331 | (sap-ref-sap location offset) |
332 | (make-gslist element-type list))))) |
333 | |
334 | (defmethod reader-function ((type (eql 'gslist)) &rest args) |
335 | (declare (ignore type)) |
336 | (destructuring-bind (element-type) args |
337 | #'(lambda (location &optional (offset 0)) |
338 | (unless (null-pointer-p (sap-ref-sap location offset)) |
339 | (map-glist 'list #'identity (sap-ref-sap location offset) element-type))))) |
340 | |
341 | (defmethod destroy-function ((type (eql 'gslist)) &rest args) |
342 | (declare (ignore type)) |
343 | (destructuring-bind (element-type) args |
344 | #'(lambda (location &optional (offset 0)) |
345 | (unless (null-pointer-p (sap-ref-sap location offset)) |
346 | (destroy-gslist (sap-ref-sap location offset) element-type) |
347 | (setf (sap-ref-sap location offset) (make-pointer 0)))))) |
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348 | |
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349 | |
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350 | ;;; Vector |
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351 | |
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352 | (defun make-c-vector (type length &optional content location) |
353 | (let* ((size-of-type (size-of type)) |
354 | (location (or location (allocate-memory (* size-of-type length)))) |
355 | (writer (writer-function type))) |
814ccf77 |
356 | (etypecase content |
357 | (vector |
358 | (loop |
359 | for element across content |
360 | for i from 0 below length |
361 | as offset = 0 then (+ offset size-of-type) |
362 | do (funcall writer element location offset))) |
363 | (list |
364 | (loop |
365 | for element in content |
366 | for i from 0 below length |
367 | as offset = 0 then (+ offset size-of-type) |
368 | do (funcall writer element location offset)))) |
9adccb27 |
369 | location)) |
370 | |
371 | |
372 | (defun map-c-vector (seqtype function location element-type length) |
373 | (let ((reader (reader-function element-type)) |
374 | (size-of-element (size-of element-type))) |
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375 | (case seqtype |
376 | ((nil) |
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377 | (loop |
378 | for i from 0 below length |
379 | as offset = 0 then (+ offset size-of-element) |
380 | do (funcall function (funcall reader location offset)))) |
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381 | (list |
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382 | (loop |
383 | for i from 0 below length |
384 | as offset = 0 then (+ offset size-of-element) |
385 | collect (funcall function (funcall reader location offset)))) |
dba0c446 |
386 | (t |
9adccb27 |
387 | (loop |
388 | with sequence = (make-sequence seqtype length) |
389 | for i from 0 below length |
390 | as offset = 0 then (+ offset size-of-element) |
391 | do (setf |
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392 | (elt sequence i) |
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393 | (funcall function (funcall reader location offset))) |
394 | finally (return sequence)))))) |
395 | |
396 | |
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397 | (defun destroy-c-vector (location element-type length) |
398 | (loop |
399 | with destroy = (destroy-function element-type) |
400 | with element-size = (size-of element-type) |
401 | for i from 0 below length |
402 | as offset = 0 then (+ offset element-size) |
403 | do (funcall destroy location offset)) |
404 | (deallocate-memory location)) |
405 | |
406 | |
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407 | (defmethod alien-type ((type (eql 'vector)) &rest args) |
408 | (declare (ignore type args)) |
409 | (alien-type 'pointer)) |
410 | |
411 | (defmethod size-of ((type (eql 'vector)) &rest args) |
412 | (declare (ignore type args)) |
413 | (size-of 'pointer)) |
414 | |
415 | (defmethod to-alien-form (vector (type (eql 'vector)) &rest args) |
416 | (declare (ignore type)) |
417 | (destructuring-bind (element-type &optional (length '*)) args |
418 | (if (eq length '*) |
419 | `(let* ((vector ,vector) |
420 | (location (sap+ |
421 | (allocate-memory (+ ,+size-of-int+ |
422 | (* ,(size-of element-type) |
423 | (length vector)))) |
424 | ,+size-of-int+))) |
425 | (make-c-vector ',element-type (length vector) vector location) |
426 | (setf (sap-ref-32 location ,(- +size-of-int+)) (length vector)) |
427 | location) |
428 | `(make-c-vector ',element-type ,length ,vector)))) |
429 | |
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430 | (defmethod from-alien-form (c-vector (type (eql 'vector)) &rest args) |
431 | (declare (ignore type)) |
432 | (destructuring-bind (element-type &optional (length '*)) args |
433 | (if (eq length '*) |
434 | (error "Can't use vector of variable size as return type") |
435 | `(let ((c-vector ,c-vector)) |
436 | (prog1 |
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437 | (map-c-vector 'vector #'identity c-vector ',element-type ,length) |
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438 | (destroy-c-vector c-vector ',element-type ,length)))))) |
439 | |
440 | (defmethod copy-from-alien-form (c-vector (type (eql 'vector)) &rest args) |
9adccb27 |
441 | (declare (ignore type)) |
442 | (destructuring-bind (element-type &optional (length '*)) args |
443 | (if (eq length '*) |
444 | (error "Can't use vector of variable size as return type") |
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445 | `(map-c-vector 'vector #'identity ,c-vector ',element-type ',length)))) |
9adccb27 |
446 | |
447 | (defmethod cleanup-form (location (type (eql 'vector)) &rest args) |
448 | (declare (ignore type)) |
449 | (destructuring-bind (element-type &optional (length '*)) args |
450 | `(let* ((location ,location) |
451 | (length ,(if (eq length '*) |
452 | `(sap-ref-32 location ,(- +size-of-int+)) |
453 | length))) |
454 | (loop |
455 | with destroy = (destroy-function ',element-type) |
456 | for i from 0 below length |
457 | as offset = 0 then (+ offset ,(size-of element-type)) |
458 | do (funcall destroy location offset)) |
459 | (deallocate-memory ,(if (eq length '*) |
460 | `(sap+ location ,(- +size-of-int+)) |
461 | 'location))))) |
16bf1149 |
462 | |
463 | (defmethod writer-function ((type (eql 'vector)) &rest args) |
464 | (declare (ignore type)) |
465 | (destructuring-bind (element-type &optional (length '*)) args |
466 | #'(lambda (vector location &optional (offset 0)) |
467 | (setf |
468 | (sap-ref-sap location offset) |
469 | (make-c-vector element-type length vector))))) |
470 | |
471 | (defmethod reader-function ((type (eql 'vector)) &rest args) |
472 | (declare (ignore type)) |
473 | (destructuring-bind (element-type &optional (length '*)) args |
474 | (if (eq length '*) |
475 | (error "Can't create reader function for vector of variable size") |
476 | #'(lambda (location &optional (offset 0)) |
477 | (unless (null-pointer-p (sap-ref-sap location offset)) |
478 | (map-c-vector 'vector #'identity (sap-ref-sap location offset) |
479 | element-type length)))))) |
480 | |
481 | (defmethod destroy-function ((type (eql 'vector)) &rest args) |
482 | (declare (ignore type)) |
483 | (destructuring-bind (element-type &optional (length '*)) args |
484 | (if (eq length '*) |
485 | (error "Can't create destroy function for vector of variable size") |
486 | #'(lambda (location &optional (offset 0)) |
487 | (unless (null-pointer-p (sap-ref-sap location offset)) |
488 | (destroy-c-vector |
489 | (sap-ref-sap location offset) element-type length) |
490 | (setf (sap-ref-sap location offset) (make-pointer 0))))))) |
463fe62f |
491 | |
492 | |
493 | ;;;; Null terminated vector |
494 | |
495 | (defun make-0-vector (type content &optional location) |
496 | (let* ((size-of-type (size-of type)) |
497 | (location (or |
498 | location |
499 | (allocate-memory (* size-of-type (1+ (length content)))))) |
500 | (writer (writer-function type))) |
501 | (etypecase content |
502 | (vector |
503 | (loop |
504 | for element across content |
505 | as offset = 0 then (+ offset size-of-type) |
506 | do (funcall writer element location offset) |
507 | finally (setf (sap-ref-sap location offset) (make-pointer 0)))) |
508 | (list |
509 | (loop |
510 | for element in content |
511 | as offset = 0 then (+ offset size-of-type) |
512 | do (funcall writer element location offset) |
513 | finally (setf (sap-ref-sap location (+ offset size-of-type)) (make-pointer 0))))) |
514 | location)) |
515 | |
516 | |
517 | (defun map-0-vector (seqtype function location element-type) |
518 | (let ((reader (reader-function element-type)) |
519 | (size-of-element (size-of element-type))) |
520 | (case seqtype |
521 | ((nil) |
522 | (loop |
523 | as offset = 0 then (+ offset size-of-element) |
524 | until (null-pointer-p (sap-ref-sap location offset)) |
525 | do (funcall function (funcall reader location offset)))) |
526 | (list |
527 | (loop |
528 | as offset = 0 then (+ offset size-of-element) |
529 | until (null-pointer-p (sap-ref-sap location offset)) |
530 | collect (funcall function (funcall reader location offset)))) |
531 | (t |
532 | (coerce |
533 | (loop |
534 | as offset = 0 then (+ offset size-of-element) |
535 | until (null-pointer-p (sap-ref-sap location offset)) |
536 | collect (funcall function (funcall reader location offset))) |
537 | seqtype))))) |
538 | |
539 | |
540 | (defun destroy-0-vector (location element-type) |
541 | (loop |
542 | with destroy = (destroy-function element-type) |
543 | with element-size = (size-of element-type) |
544 | as offset = 0 then (+ offset element-size) |
545 | until (null-pointer-p (sap-ref-sap location offset)) |
546 | do (funcall destroy location offset)) |
547 | (deallocate-memory location)) |
548 | |
549 | |
545712f4 |
550 | (defmethod alien-type ((type (eql 'null-terminated-vector)) &rest args) |
463fe62f |
551 | (declare (ignore type args)) |
552 | (alien-type 'pointer)) |
553 | |
545712f4 |
554 | (defmethod size-of ((type (eql 'null-terminated-vector)) &rest args) |
463fe62f |
555 | (declare (ignore type args)) |
556 | (alien-type 'pointer)) |
557 | |
545712f4 |
558 | (defmethod writer-function ((type (eql 'null-terminated-vector)) &rest args) |
463fe62f |
559 | (declare (ignore type)) |
545712f4 |
560 | (destructuring-bind (element-type) args |
463fe62f |
561 | (unless (eq (alien-type element-type) (alien-type 'pointer)) |
562 | (error "Elements in null-terminated vectors need to be of pointer types")) |
563 | #'(lambda (vector location &optional (offset 0)) |
564 | (setf |
565 | (sap-ref-sap location offset) |
566 | (make-0-vector element-type vector))))) |
567 | |
545712f4 |
568 | (defmethod reader-function ((type (eql 'null-terminated-vector)) &rest args) |
463fe62f |
569 | (declare (ignore type)) |
545712f4 |
570 | (destructuring-bind (element-type) args |
463fe62f |
571 | (unless (eq (alien-type element-type) (alien-type 'pointer)) |
572 | (error "Elements in null-terminated vectors need to be of pointer types")) |
573 | #'(lambda (location &optional (offset 0)) |
574 | (unless (null-pointer-p (sap-ref-sap location offset)) |
575 | (map-0-vector 'vector #'identity (sap-ref-sap location offset) |
576 | element-type))))) |
577 | |
545712f4 |
578 | (defmethod destroy-function ((type (eql 'null-terminated-vector)) &rest args) |
463fe62f |
579 | (declare (ignore type)) |
545712f4 |
580 | (destructuring-bind (element-type) args |
463fe62f |
581 | (unless (eq (alien-type element-type) (alien-type 'pointer)) |
582 | (error "Elements in null-terminated vectors need to be of pointer types")) |
583 | #'(lambda (location &optional (offset 0)) |
584 | (unless (null-pointer-p (sap-ref-sap location offset)) |
545712f4 |
585 | (destroy-0-vector |
463fe62f |
586 | (sap-ref-sap location offset) element-type) |
587 | (setf (sap-ref-sap location offset) (make-pointer 0)))))) |
588 | |
545712f4 |
589 | (defmethod unbound-value ((type (eql 'null-terminated-vector)) &rest args) |
590 | (declare (ignore type args)) |
463fe62f |
591 | (values t nil)) |