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1 | ;; Common Lisp bindings for GTK+ 2.x |
2 | ;; Copyright 1999-2005 Espen S. Johnsen <espen@users.sf.net> |
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3 | ;; |
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4 | ;; Permission is hereby granted, free of charge, to any person obtaining |
5 | ;; a copy of this software and associated documentation files (the |
6 | ;; "Software"), to deal in the Software without restriction, including |
7 | ;; without limitation the rights to use, copy, modify, merge, publish, |
8 | ;; distribute, sublicense, and/or sell copies of the Software, and to |
9 | ;; permit persons to whom the Software is furnished to do so, subject to |
10 | ;; the following conditions: |
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11 | ;; |
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12 | ;; The above copyright notice and this permission notice shall be |
13 | ;; included in all copies or substantial portions of the Software. |
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14 | ;; |
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15 | ;; THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
16 | ;; EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
17 | ;; MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
18 | ;; IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY |
19 | ;; CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, |
20 | ;; TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE |
21 | ;; SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
22 | |
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23 | ;; $Id: glib.lisp,v 1.34 2006-02-15 09:53:42 espen Exp $ |
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24 | |
25 | |
26 | (in-package "GLIB") |
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27 | |
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28 | (use-prefix "g") |
29 | |
30 | |
31 | ;;;; Memory management |
32 | |
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33 | (defbinding (allocate-memory "g_malloc0") () pointer |
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34 | (size unsigned-long)) |
35 | |
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36 | (defbinding (reallocate-memory "g_realloc") () pointer |
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37 | (address pointer) |
38 | (size unsigned-long)) |
39 | |
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40 | (defbinding (deallocate-memory "g_free") () nil |
41 | (address pointer)) |
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42 | ;; (defun deallocate-memory (address) |
43 | ;; (declare (ignore address))) |
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44 | |
45 | (defun copy-memory (from length &optional (to (allocate-memory length))) |
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46 | #+cmu(system-area-copy from 0 to 0 (* 8 length)) |
47 | #+sbcl(system-area-ub8-copy from 0 to 0 length) |
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48 | to) |
49 | |
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50 | (defmacro with-allocated-memory ((var size) &body body) |
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51 | (if (constantp size) |
52 | (let ((alien (make-symbol "ALIEN"))) |
53 | `(with-alien ((,alien (array #+sbcl(sb-alien:unsigned 8) #+cmu(alien:unsigned 8) ,(eval size)))) |
54 | (let ((,var (alien-sap ,alien))) |
55 | ,@body))) |
56 | `(let ((,var (allocate-memory ,size))) |
57 | (unwind-protect |
58 | (progn ,@body) |
59 | (deallocate-memory ,var))))) |
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60 | |
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61 | |
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62 | ;;;; User data mechanism |
63 | |
64 | (internal *user-data* *user-data-count*) |
65 | |
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66 | (defvar *user-data* (make-hash-table)) |
67 | (defvar *user-data-count* 0) |
68 | |
69 | (defun register-user-data (object &optional destroy-function) |
70 | (check-type destroy-function (or null symbol function)) |
71 | (incf *user-data-count*) |
72 | (setf |
73 | (gethash *user-data-count* *user-data*) |
74 | (cons object destroy-function)) |
75 | *user-data-count*) |
76 | |
77 | (defun find-user-data (id) |
78 | (check-type id fixnum) |
79 | (multiple-value-bind (user-data p) (gethash id *user-data*) |
80 | (values (car user-data) p))) |
81 | |
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82 | (defun user-data-exists-p (id) |
83 | (nth-value 1 (find-user-data id))) |
84 | |
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85 | (defun update-user-data (id object) |
86 | (check-type id fixnum) |
87 | (multiple-value-bind (user-data exists-p) (gethash id *user-data*) |
88 | (cond |
89 | ((not exists-p) (error "User data id ~A does not exist" id)) |
90 | (t |
91 | (when (cdr user-data) |
92 | (funcall (cdr user-data) (car user-data))) |
93 | (setf (car user-data) object))))) |
94 | |
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95 | (defun destroy-user-data (id) |
96 | (check-type id fixnum) |
97 | (let ((user-data (gethash id *user-data*))) |
98 | (when (cdr user-data) |
99 | (funcall (cdr user-data) (car user-data)))) |
100 | (remhash id *user-data*)) |
101 | |
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102 | |
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103 | ;;;; Quarks |
104 | |
105 | (deftype quark () 'unsigned) |
106 | |
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107 | (defbinding %quark-from-string () quark |
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108 | (string string)) |
109 | |
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110 | (defun quark-intern (object) |
111 | (etypecase object |
112 | (quark object) |
113 | (string (%quark-from-string object)) |
114 | (symbol (%quark-from-string (format nil "clg-~A:~A" |
115 | (package-name (symbol-package object)) |
116 | object))))) |
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117 | |
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118 | (defbinding quark-to-string () (copy-of string) |
119 | (quark quark)) |
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120 | |
121 | |
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122 | ;;;; Linked list (GList) |
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123 | |
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124 | (deftype glist (type) |
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125 | `(or (null (cons ,type list)))) |
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126 | |
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127 | (defbinding (%glist-append "g_list_append") () pointer |
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128 | (glist pointer) |
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129 | (nil null)) |
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130 | |
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131 | (defun make-glist (type list) |
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132 | (loop |
133 | with writer = (writer-function type) |
134 | for element in list |
135 | as glist = (%glist-append (or glist (make-pointer 0))) |
136 | do (funcall writer element glist) |
137 | finally (return glist))) |
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138 | |
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139 | (defun glist-next (glist) |
140 | (unless (null-pointer-p glist) |
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141 | (sap-ref-sap glist +size-of-pointer+))) |
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142 | |
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143 | ;; Also used for gslists |
144 | (defun map-glist (seqtype function glist element-type) |
145 | (let ((reader (reader-function element-type))) |
146 | (case seqtype |
147 | ((nil) |
148 | (loop |
149 | as tmp = glist then (glist-next tmp) |
150 | until (null-pointer-p tmp) |
151 | do (funcall function (funcall reader tmp)))) |
152 | (list |
153 | (loop |
154 | as tmp = glist then (glist-next tmp) |
155 | until (null-pointer-p tmp) |
156 | collect (funcall function (funcall reader tmp)))) |
157 | (t |
158 | (coerce |
159 | (loop |
160 | as tmp = glist then (glist-next tmp) |
161 | until (null-pointer-p tmp) |
162 | collect (funcall function (funcall reader tmp))) |
163 | seqtype))))) |
164 | |
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165 | (defbinding (glist-free "g_list_free") () nil |
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166 | (glist pointer)) |
167 | |
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168 | (defun destroy-glist (glist element-type) |
169 | (loop |
170 | with destroy = (destroy-function element-type) |
171 | as tmp = glist then (glist-next tmp) |
172 | until (null-pointer-p tmp) |
173 | do (funcall destroy tmp 0)) |
174 | (glist-free glist)) |
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175 | |
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176 | (defmethod alien-type ((type (eql 'glist)) &rest args) |
177 | (declare (ignore type args)) |
178 | (alien-type 'pointer)) |
179 | |
180 | (defmethod size-of ((type (eql 'glist)) &rest args) |
181 | (declare (ignore type args)) |
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182 | (size-of 'pointer)) |
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183 | |
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184 | (defmethod to-alien-form (list (type (eql 'glist)) &rest args) |
185 | (declare (ignore type)) |
186 | (destructuring-bind (element-type) args |
187 | `(make-glist ',element-type ,list))) |
188 | |
189 | (defmethod to-alien-function ((type (eql 'glist)) &rest args) |
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190 | (declare (ignore type)) |
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191 | (destructuring-bind (element-type) args |
192 | #'(lambda (list) |
193 | (make-glist element-type list)))) |
194 | |
195 | (defmethod from-alien-form (glist (type (eql 'glist)) &rest args) |
196 | (declare (ignore type)) |
197 | (destructuring-bind (element-type) args |
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198 | `(let ((glist ,glist)) |
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199 | (unwind-protect |
200 | (map-glist 'list #'identity glist ',element-type) |
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201 | (destroy-glist glist ',element-type))))) |
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202 | |
203 | (defmethod from-alien-function ((type (eql 'glist)) &rest args) |
204 | (declare (ignore type)) |
205 | (destructuring-bind (element-type) args |
206 | #'(lambda (glist) |
207 | (unwind-protect |
208 | (map-glist 'list #'identity glist element-type) |
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209 | (destroy-glist glist element-type))))) |
210 | |
211 | (defmethod copy-from-alien-form (glist (type (eql 'glist)) &rest args) |
212 | (declare (ignore type)) |
213 | (destructuring-bind (element-type) args |
214 | `(map-glist 'list #'identity ,glist ',element-type))) |
215 | |
216 | (defmethod copy-from-alien-function ((type (eql 'glist)) &rest args) |
217 | (declare (ignore type)) |
218 | (destructuring-bind (element-type) args |
219 | #'(lambda (glist) |
220 | (map-glist 'list #'identity glist element-type)))) |
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221 | |
222 | (defmethod cleanup-form (glist (type (eql 'glist)) &rest args) |
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223 | (declare (ignore type)) |
224 | (destructuring-bind (element-type) args |
225 | `(destroy-glist ,glist ',element-type))) |
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226 | |
227 | (defmethod cleanup-function ((type (eql 'glist)) &rest args) |
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228 | (declare (ignore type)) |
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229 | (destructuring-bind (element-type) args |
230 | #'(lambda (glist) |
231 | (destroy-glist glist element-type)))) |
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232 | |
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233 | (defmethod writer-function ((type (eql 'glist)) &rest args) |
234 | (declare (ignore type)) |
235 | (destructuring-bind (element-type) args |
236 | #'(lambda (list location &optional (offset 0)) |
237 | (setf |
238 | (sap-ref-sap location offset) |
239 | (make-glist element-type list))))) |
240 | |
241 | (defmethod reader-function ((type (eql 'glist)) &rest args) |
242 | (declare (ignore type)) |
243 | (destructuring-bind (element-type) args |
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244 | #'(lambda (location &optional (offset 0) weak-p) |
245 | (declare (ignore weak-p)) |
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246 | (unless (null-pointer-p (sap-ref-sap location offset)) |
247 | (map-glist 'list #'identity (sap-ref-sap location offset) element-type))))) |
248 | |
249 | (defmethod destroy-function ((type (eql 'glist)) &rest args) |
250 | (declare (ignore type)) |
251 | (destructuring-bind (element-type) args |
252 | #'(lambda (location &optional (offset 0)) |
253 | (unless (null-pointer-p (sap-ref-sap location offset)) |
254 | (destroy-glist (sap-ref-sap location offset) element-type) |
255 | (setf (sap-ref-sap location offset) (make-pointer 0)))))) |
256 | |
257 | |
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258 | |
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259 | ;;;; Single linked list (GSList) |
260 | |
261 | (deftype gslist (type) `(or (null (cons ,type list)))) |
262 | |
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263 | (defbinding (%gslist-prepend "g_slist_prepend") () pointer |
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264 | (gslist pointer) |
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265 | (nil null)) |
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266 | |
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267 | (defun make-gslist (type list) |
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268 | (loop |
269 | with writer = (writer-function type) |
270 | for element in (reverse list) |
271 | as gslist = (%gslist-prepend (or gslist (make-pointer 0))) |
272 | do (funcall writer element gslist) |
273 | finally (return gslist))) |
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274 | |
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275 | (defbinding (gslist-free "g_slist_free") () nil |
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276 | (gslist pointer)) |
277 | |
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278 | (defun destroy-gslist (gslist element-type) |
279 | (loop |
280 | with destroy = (destroy-function element-type) |
281 | as tmp = gslist then (glist-next tmp) |
282 | until (null-pointer-p tmp) |
283 | do (funcall destroy tmp 0)) |
284 | (gslist-free gslist)) |
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285 | |
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286 | (defmethod alien-type ((type (eql 'gslist)) &rest args) |
287 | (declare (ignore type args)) |
288 | (alien-type 'pointer)) |
289 | |
290 | (defmethod size-of ((type (eql 'gslist)) &rest args) |
291 | (declare (ignore type args)) |
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292 | (size-of 'pointer)) |
293 | |
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294 | (defmethod to-alien-form (list (type (eql 'gslist)) &rest args) |
295 | (declare (ignore type)) |
296 | (destructuring-bind (element-type) args |
297 | `(make-sglist ',element-type ,list))) |
298 | |
299 | (defmethod to-alien-function ((type (eql 'gslist)) &rest args) |
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300 | (declare (ignore type)) |
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301 | (destructuring-bind (element-type) args |
302 | #'(lambda (list) |
303 | (make-gslist element-type list)))) |
304 | |
305 | (defmethod from-alien-form (gslist (type (eql 'gslist)) &rest args) |
306 | (declare (ignore type)) |
307 | (destructuring-bind (element-type) args |
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308 | `(let ((gslist ,gslist)) |
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309 | (unwind-protect |
310 | (map-glist 'list #'identity gslist ',element-type) |
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311 | (destroy-gslist gslist ',element-type))))) |
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312 | |
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313 | (defmethod from-alien-function ((type (eql 'gslist)) &rest args) |
314 | (declare (ignore type)) |
315 | (destructuring-bind (element-type) args |
316 | #'(lambda (gslist) |
317 | (unwind-protect |
318 | (map-glist 'list #'identity gslist element-type) |
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319 | (destroy-gslist gslist element-type))))) |
320 | |
321 | (defmethod copy-from-alien-form (gslist (type (eql 'gslist)) &rest args) |
322 | (declare (ignore type)) |
323 | (destructuring-bind (element-type) args |
324 | `(map-glist 'list #'identity ,gslist ',element-type))) |
325 | |
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326 | (defmethod copy-from-alien-function ((type (eql 'gslist)) &rest args) |
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327 | (declare (ignore type)) |
328 | (destructuring-bind (element-type) args |
329 | #'(lambda (gslist) |
330 | (map-glist 'list #'identity gslist element-type)))) |
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331 | |
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332 | (defmethod cleanup-form (gslist (type (eql 'gslist)) &rest args) |
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333 | (declare (ignore type)) |
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334 | (destructuring-bind (element-type) args |
335 | `(destroy-gslist ,gslist ',element-type))) |
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336 | |
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337 | (defmethod cleanup-function ((type (eql 'gslist)) &rest args) |
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338 | (declare (ignore type)) |
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339 | (destructuring-bind (element-type) args |
340 | #'(lambda (gslist) |
341 | (destroy-gslist gslist element-type)))) |
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342 | |
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343 | (defmethod writer-function ((type (eql 'gslist)) &rest args) |
344 | (declare (ignore type)) |
345 | (destructuring-bind (element-type) args |
346 | #'(lambda (list location &optional (offset 0)) |
347 | (setf |
348 | (sap-ref-sap location offset) |
349 | (make-gslist element-type list))))) |
350 | |
351 | (defmethod reader-function ((type (eql 'gslist)) &rest args) |
352 | (declare (ignore type)) |
353 | (destructuring-bind (element-type) args |
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354 | #'(lambda (location &optional (offset 0) weak-p) |
355 | (declare (ignore weak-p)) |
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356 | (unless (null-pointer-p (sap-ref-sap location offset)) |
357 | (map-glist 'list #'identity (sap-ref-sap location offset) element-type))))) |
358 | |
359 | (defmethod destroy-function ((type (eql 'gslist)) &rest args) |
360 | (declare (ignore type)) |
361 | (destructuring-bind (element-type) args |
362 | #'(lambda (location &optional (offset 0)) |
363 | (unless (null-pointer-p (sap-ref-sap location offset)) |
364 | (destroy-gslist (sap-ref-sap location offset) element-type) |
365 | (setf (sap-ref-sap location offset) (make-pointer 0)))))) |
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366 | |
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367 | |
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368 | ;;; Vector |
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369 | |
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370 | (defun make-c-vector (type length &optional content location) |
371 | (let* ((size-of-type (size-of type)) |
372 | (location (or location (allocate-memory (* size-of-type length)))) |
373 | (writer (writer-function type))) |
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374 | (etypecase content |
375 | (vector |
376 | (loop |
377 | for element across content |
378 | for i from 0 below length |
379 | as offset = 0 then (+ offset size-of-type) |
380 | do (funcall writer element location offset))) |
381 | (list |
382 | (loop |
383 | for element in content |
384 | for i from 0 below length |
385 | as offset = 0 then (+ offset size-of-type) |
386 | do (funcall writer element location offset)))) |
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387 | location)) |
388 | |
389 | |
390 | (defun map-c-vector (seqtype function location element-type length) |
391 | (let ((reader (reader-function element-type)) |
392 | (size-of-element (size-of element-type))) |
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393 | (case seqtype |
394 | ((nil) |
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395 | (loop |
396 | for i from 0 below length |
397 | as offset = 0 then (+ offset size-of-element) |
398 | do (funcall function (funcall reader location offset)))) |
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399 | (list |
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400 | (loop |
401 | for i from 0 below length |
402 | as offset = 0 then (+ offset size-of-element) |
403 | collect (funcall function (funcall reader location offset)))) |
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404 | (t |
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405 | (loop |
406 | with sequence = (make-sequence seqtype length) |
407 | for i from 0 below length |
408 | as offset = 0 then (+ offset size-of-element) |
409 | do (setf |
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410 | (elt sequence i) |
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411 | (funcall function (funcall reader location offset))) |
412 | finally (return sequence)))))) |
413 | |
414 | |
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415 | (defun destroy-c-vector (location element-type length) |
416 | (loop |
417 | with destroy = (destroy-function element-type) |
418 | with element-size = (size-of element-type) |
419 | for i from 0 below length |
420 | as offset = 0 then (+ offset element-size) |
421 | do (funcall destroy location offset)) |
422 | (deallocate-memory location)) |
423 | |
424 | |
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425 | (defmethod alien-type ((type (eql 'vector)) &rest args) |
426 | (declare (ignore type args)) |
427 | (alien-type 'pointer)) |
428 | |
429 | (defmethod size-of ((type (eql 'vector)) &rest args) |
430 | (declare (ignore type args)) |
431 | (size-of 'pointer)) |
432 | |
433 | (defmethod to-alien-form (vector (type (eql 'vector)) &rest args) |
434 | (declare (ignore type)) |
435 | (destructuring-bind (element-type &optional (length '*)) args |
436 | (if (eq length '*) |
437 | `(let* ((vector ,vector) |
438 | (location (sap+ |
439 | (allocate-memory (+ ,+size-of-int+ |
440 | (* ,(size-of element-type) |
441 | (length vector)))) |
442 | ,+size-of-int+))) |
443 | (make-c-vector ',element-type (length vector) vector location) |
444 | (setf (sap-ref-32 location ,(- +size-of-int+)) (length vector)) |
445 | location) |
446 | `(make-c-vector ',element-type ,length ,vector)))) |
447 | |
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448 | (defmethod from-alien-form (c-vector (type (eql 'vector)) &rest args) |
449 | (declare (ignore type)) |
450 | (destructuring-bind (element-type &optional (length '*)) args |
451 | (if (eq length '*) |
452 | (error "Can't use vector of variable size as return type") |
453 | `(let ((c-vector ,c-vector)) |
454 | (prog1 |
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455 | (map-c-vector 'vector #'identity c-vector ',element-type ,length) |
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456 | (destroy-c-vector c-vector ',element-type ,length)))))) |
457 | |
458 | (defmethod copy-from-alien-form (c-vector (type (eql 'vector)) &rest args) |
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459 | (declare (ignore type)) |
460 | (destructuring-bind (element-type &optional (length '*)) args |
461 | (if (eq length '*) |
462 | (error "Can't use vector of variable size as return type") |
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463 | `(map-c-vector 'vector #'identity ,c-vector ',element-type ,length)))) |
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464 | |
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465 | (defmethod copy-from-alien-function ((type (eql 'vector)) &rest args) |
466 | (declare (ignore type)) |
467 | (destructuring-bind (element-type &optional (length '*)) args |
468 | (if (eq length '*) |
469 | (error "Can't use vector of variable size as return type") |
470 | #'(lambda (c-vector) |
471 | (map-c-vector 'vector #'identity c-vector element-type length))))) |
472 | |
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473 | (defmethod cleanup-form (location (type (eql 'vector)) &rest args) |
474 | (declare (ignore type)) |
475 | (destructuring-bind (element-type &optional (length '*)) args |
476 | `(let* ((location ,location) |
477 | (length ,(if (eq length '*) |
478 | `(sap-ref-32 location ,(- +size-of-int+)) |
479 | length))) |
480 | (loop |
481 | with destroy = (destroy-function ',element-type) |
482 | for i from 0 below length |
483 | as offset = 0 then (+ offset ,(size-of element-type)) |
484 | do (funcall destroy location offset)) |
485 | (deallocate-memory ,(if (eq length '*) |
486 | `(sap+ location ,(- +size-of-int+)) |
487 | 'location))))) |
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488 | |
489 | (defmethod writer-function ((type (eql 'vector)) &rest args) |
490 | (declare (ignore type)) |
491 | (destructuring-bind (element-type &optional (length '*)) args |
492 | #'(lambda (vector location &optional (offset 0)) |
493 | (setf |
494 | (sap-ref-sap location offset) |
495 | (make-c-vector element-type length vector))))) |
496 | |
497 | (defmethod reader-function ((type (eql 'vector)) &rest args) |
498 | (declare (ignore type)) |
499 | (destructuring-bind (element-type &optional (length '*)) args |
500 | (if (eq length '*) |
501 | (error "Can't create reader function for vector of variable size") |
3005806e |
502 | #'(lambda (location &optional (offset 0) weak-p) |
503 | (declare (ignore weak-p)) |
16bf1149 |
504 | (unless (null-pointer-p (sap-ref-sap location offset)) |
505 | (map-c-vector 'vector #'identity (sap-ref-sap location offset) |
506 | element-type length)))))) |
507 | |
508 | (defmethod destroy-function ((type (eql 'vector)) &rest args) |
509 | (declare (ignore type)) |
510 | (destructuring-bind (element-type &optional (length '*)) args |
511 | (if (eq length '*) |
512 | (error "Can't create destroy function for vector of variable size") |
513 | #'(lambda (location &optional (offset 0)) |
514 | (unless (null-pointer-p (sap-ref-sap location offset)) |
515 | (destroy-c-vector |
516 | (sap-ref-sap location offset) element-type length) |
517 | (setf (sap-ref-sap location offset) (make-pointer 0))))))) |
463fe62f |
518 | |
519 | |
520 | ;;;; Null terminated vector |
521 | |
522 | (defun make-0-vector (type content &optional location) |
523 | (let* ((size-of-type (size-of type)) |
524 | (location (or |
525 | location |
526 | (allocate-memory (* size-of-type (1+ (length content)))))) |
527 | (writer (writer-function type))) |
528 | (etypecase content |
529 | (vector |
530 | (loop |
531 | for element across content |
532 | as offset = 0 then (+ offset size-of-type) |
533 | do (funcall writer element location offset) |
534 | finally (setf (sap-ref-sap location offset) (make-pointer 0)))) |
535 | (list |
536 | (loop |
537 | for element in content |
538 | as offset = 0 then (+ offset size-of-type) |
539 | do (funcall writer element location offset) |
540 | finally (setf (sap-ref-sap location (+ offset size-of-type)) (make-pointer 0))))) |
541 | location)) |
542 | |
543 | |
544 | (defun map-0-vector (seqtype function location element-type) |
545 | (let ((reader (reader-function element-type)) |
546 | (size-of-element (size-of element-type))) |
547 | (case seqtype |
548 | ((nil) |
549 | (loop |
550 | as offset = 0 then (+ offset size-of-element) |
551 | until (null-pointer-p (sap-ref-sap location offset)) |
552 | do (funcall function (funcall reader location offset)))) |
553 | (list |
554 | (loop |
555 | as offset = 0 then (+ offset size-of-element) |
556 | until (null-pointer-p (sap-ref-sap location offset)) |
557 | collect (funcall function (funcall reader location offset)))) |
558 | (t |
559 | (coerce |
560 | (loop |
561 | as offset = 0 then (+ offset size-of-element) |
562 | until (null-pointer-p (sap-ref-sap location offset)) |
563 | collect (funcall function (funcall reader location offset))) |
564 | seqtype))))) |
565 | |
566 | |
567 | (defun destroy-0-vector (location element-type) |
568 | (loop |
569 | with destroy = (destroy-function element-type) |
570 | with element-size = (size-of element-type) |
571 | as offset = 0 then (+ offset element-size) |
572 | until (null-pointer-p (sap-ref-sap location offset)) |
573 | do (funcall destroy location offset)) |
574 | (deallocate-memory location)) |
575 | |
5e8ceafa |
576 | (deftype null-terminated-vector (element-type) `(vector ,element-type)) |
463fe62f |
577 | |
545712f4 |
578 | (defmethod alien-type ((type (eql 'null-terminated-vector)) &rest args) |
463fe62f |
579 | (declare (ignore type args)) |
580 | (alien-type 'pointer)) |
581 | |
545712f4 |
582 | (defmethod size-of ((type (eql 'null-terminated-vector)) &rest args) |
463fe62f |
583 | (declare (ignore type args)) |
5e8ceafa |
584 | (size-of 'pointer)) |
585 | |
586 | (defmethod to-alien-form (vector (type (eql 'null-terminated-vector)) &rest args) |
587 | (declare (ignore type)) |
588 | (destructuring-bind (element-type) args |
589 | `(make-0-vector ',element-type ,vector))) |
590 | |
591 | (defmethod from-alien-form (c-vector (type (eql 'null-terminated-vector)) &rest args) |
592 | (declare (ignore type)) |
593 | (destructuring-bind (element-type) args |
594 | `(let ((c-vector ,c-vector)) |
595 | (prog1 |
596 | (map-0-vector 'vector #'identity c-vector ',element-type) |
597 | (destroy-0-vector c-vector ',element-type))))) |
598 | |
599 | (defmethod copy-from-alien-form (c-vector (type (eql 'null-terminated-vector)) &rest args) |
600 | (declare (ignore type)) |
601 | (destructuring-bind (element-type) args |
602 | `(map-0-vector 'vector #'identity ,c-vector ',element-type))) |
603 | |
604 | (defmethod cleanup-form (location (type (eql 'null-terminated-vector)) &rest args) |
605 | (declare (ignore type)) |
606 | (destructuring-bind (element-type) args |
607 | `(destroy-0-vector ,location ',element-type))) |
463fe62f |
608 | |
545712f4 |
609 | (defmethod writer-function ((type (eql 'null-terminated-vector)) &rest args) |
463fe62f |
610 | (declare (ignore type)) |
545712f4 |
611 | (destructuring-bind (element-type) args |
463fe62f |
612 | (unless (eq (alien-type element-type) (alien-type 'pointer)) |
613 | (error "Elements in null-terminated vectors need to be of pointer types")) |
614 | #'(lambda (vector location &optional (offset 0)) |
615 | (setf |
616 | (sap-ref-sap location offset) |
617 | (make-0-vector element-type vector))))) |
618 | |
545712f4 |
619 | (defmethod reader-function ((type (eql 'null-terminated-vector)) &rest args) |
463fe62f |
620 | (declare (ignore type)) |
545712f4 |
621 | (destructuring-bind (element-type) args |
463fe62f |
622 | (unless (eq (alien-type element-type) (alien-type 'pointer)) |
623 | (error "Elements in null-terminated vectors need to be of pointer types")) |
3005806e |
624 | #'(lambda (location &optional (offset 0) weak-p) |
625 | (declare (ignore weak-p)) |
463fe62f |
626 | (unless (null-pointer-p (sap-ref-sap location offset)) |
627 | (map-0-vector 'vector #'identity (sap-ref-sap location offset) |
628 | element-type))))) |
629 | |
545712f4 |
630 | (defmethod destroy-function ((type (eql 'null-terminated-vector)) &rest args) |
463fe62f |
631 | (declare (ignore type)) |
545712f4 |
632 | (destructuring-bind (element-type) args |
463fe62f |
633 | (unless (eq (alien-type element-type) (alien-type 'pointer)) |
634 | (error "Elements in null-terminated vectors need to be of pointer types")) |
635 | #'(lambda (location &optional (offset 0)) |
636 | (unless (null-pointer-p (sap-ref-sap location offset)) |
545712f4 |
637 | (destroy-0-vector |
463fe62f |
638 | (sap-ref-sap location offset) element-type) |
639 | (setf (sap-ref-sap location offset) (make-pointer 0)))))) |
640 | |
545712f4 |
641 | (defmethod unbound-value ((type (eql 'null-terminated-vector)) &rest args) |
642 | (declare (ignore type args)) |
463fe62f |
643 | (values t nil)) |
5e8ceafa |
644 | |
645 | |
646 | ;;; Counted vector |
647 | |
648 | (defun make-counted-vector (type content) |
649 | (let* ((size-of-type (size-of type)) |
650 | (length (length content)) |
651 | (location |
652 | (allocate-memory (+ +size-of-int+ (* size-of-type length))))) |
653 | (setf (sap-ref-32 location 0) length) |
654 | (make-c-vector type length content (sap+ location +size-of-int+)))) |
655 | |
656 | (defun map-counted-vector (seqtype function location element-type) |
657 | (let ((length (sap-ref-32 location 0))) |
658 | (map-c-vector |
659 | seqtype function (sap+ location +size-of-int+) |
660 | element-type length))) |
661 | |
662 | (defun destroy-counted-vector (location element-type) |
663 | (loop |
664 | with destroy = (destroy-function element-type) |
665 | with element-size = (size-of element-type) |
666 | for i from 0 below (sap-ref-32 location 0) |
667 | as offset = +size-of-int+ then (+ offset element-size) |
668 | do (funcall destroy location offset)) |
669 | (deallocate-memory location)) |
670 | |
671 | |
672 | (deftype counted-vector (element-type) `(vector ,element-type)) |
673 | |
674 | (defmethod alien-type ((type (eql 'counted-vector)) &rest args) |
675 | (declare (ignore type args)) |
676 | (alien-type 'pointer)) |
677 | |
678 | (defmethod size-of ((type (eql 'counted-vector)) &rest args) |
679 | (declare (ignore type args)) |
680 | (size-of 'pointer)) |
681 | |
682 | (defmethod to-alien-form (vector (type (eql 'counted-vector)) &rest args) |
683 | (declare (ignore type)) |
684 | (destructuring-bind (element-type) args |
685 | `(make-counted-vector ',element-type ,vector))) |
686 | |
687 | (defmethod from-alien-form (c-vector (type (eql 'counted-vector)) &rest args) |
688 | (declare (ignore type)) |
689 | (destructuring-bind (element-type) args |
690 | `(let ((c-vector ,c-vector)) |
691 | (prog1 |
692 | (map-counted-vector 'vector #'identity c-vector ',element-type) |
693 | (destroy-counted-vector c-vector ',element-type))))) |
694 | |
695 | (defmethod copy-from-alien-form (c-vector (type (eql 'counted-vector)) &rest args) |
696 | (declare (ignore type)) |
697 | (destructuring-bind (element-type) args |
698 | `(map-counted-vector 'vector #'identity ,c-vector ',element-type))) |
699 | |
700 | (defmethod copy-from-alien-function ((type (eql 'counted-vector)) &rest args) |
701 | (declare (ignore type)) |
702 | (destructuring-bind (element-type) args |
703 | #'(lambda (c-vector) |
704 | (map-counted-vector 'vector #'identity c-vector element-type)))) |
705 | |
706 | (defmethod cleanup-form (location (type (eql 'counted-vector)) &rest args) |
707 | (declare (ignore type)) |
708 | (destructuring-bind (element-type) args |
709 | `(destroy-counted-vector ,location ',element-type))) |
710 | |
711 | (defmethod writer-function ((type (eql 'counted-vector)) &rest args) |
712 | (declare (ignore type)) |
713 | (destructuring-bind (element-type) args |
714 | #'(lambda (vector location &optional (offset 0)) |
715 | (setf |
716 | (sap-ref-sap location offset) |
717 | (make-counted-vector element-type vector))))) |
718 | |
719 | (defmethod reader-function ((type (eql 'counted-vector)) &rest args) |
720 | (declare (ignore type)) |
721 | (destructuring-bind (element-type) args |
3005806e |
722 | #'(lambda (location &optional (offset 0) weak-p) |
723 | (declare (ignore weak-p)) |
5e8ceafa |
724 | (unless (null-pointer-p (sap-ref-sap location offset)) |
725 | (map-counted-vector 'vector #'identity |
726 | (sap-ref-sap location offset) element-type))))) |
727 | |
728 | (defmethod destroy-function ((type (eql 'counted-vector)) &rest args) |
729 | (declare (ignore type)) |
730 | (destructuring-bind (element-type) args |
731 | #'(lambda (location &optional (offset 0)) |
732 | (unless (null-pointer-p (sap-ref-sap location offset)) |
733 | (destroy-counted-vector |
734 | (sap-ref-sap location offset) element-type) |
735 | (setf (sap-ref-sap location offset) (make-pointer 0)))))) |