c14ae73f |
1 | ;; Common Lisp bindings for GTK+ 2.x |
2 | ;; Copyright 1999-2006 Espen S. Johnsen <espen@users.sf.net> |
3 | ;; |
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: |
11 | ;; |
12 | ;; The above copyright notice and this permission notice shall be |
13 | ;; included in all copies or substantial portions of the Software. |
14 | ;; |
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 | |
efc1c549 |
23 | ;; $Id: vectors.lisp,v 1.3 2007/06/01 06:15:37 espen Exp $ |
c14ae73f |
24 | |
25 | |
26 | (in-package "GFFI") |
27 | |
28 | ;;; Vector |
29 | |
30 | (defun make-c-vector (type length &key content location temp) |
31 | (let* ((element-size (size-of type)) |
32 | (location (or location (allocate-memory (* element-size length)))) |
33 | (writer (writer-function type :temp temp))) |
34 | (etypecase content |
35 | (vector |
36 | (loop |
37 | for element across content |
38 | for i below length |
39 | for offset by element-size |
40 | do (funcall writer element location offset))) |
41 | (list |
42 | (loop |
43 | for element in content |
44 | for i below length |
45 | for offset by element-size |
46 | do (funcall writer element location offset)))) |
47 | location)) |
48 | |
49 | |
50 | (defun map-c-vector (seqtype function location element-type length |
51 | &optional (ref :read)) |
52 | (let ((reader (reader-function element-type :ref ref)) |
53 | (element-size (size-of element-type))) |
54 | (case seqtype |
55 | ((nil) |
56 | (loop |
57 | for i below length |
58 | for offset by element-size |
59 | do (funcall function (funcall reader location offset)))) |
60 | (list |
61 | (loop |
62 | for i below length |
63 | for offset by element-size |
64 | collect (funcall function (funcall reader location offset)))) |
65 | (t |
66 | (loop |
67 | with sequence = (make-sequence seqtype length) |
68 | for i below length |
69 | for offset by element-size |
70 | do (setf |
71 | (elt sequence i) |
72 | (funcall function (funcall reader location offset))) |
73 | finally (return sequence)))))) |
74 | |
75 | |
76 | (defun unset-c-vector (location element-type length &optional temp-p) |
77 | (loop |
78 | with destroy = (destroy-function element-type :temp temp-p) |
79 | with element-size = (size-of element-type) |
80 | for i below length |
81 | for offset by element-size |
82 | do (funcall destroy location offset))) |
83 | |
84 | |
85 | (defun destroy-c-vector (location element-type length &optional temp-p) |
86 | (unset-c-vector location element-type length temp-p) |
87 | (deallocate-memory location)) |
88 | |
89 | |
90 | (defmacro with-c-vector (var type content &body body) |
91 | (let ((length (make-symbol "LENGTH"))) |
92 | `(let ((,length (length ,content))) |
93 | (with-memory (,var (* ,(size-of type) ,length)) |
94 | (make-c-vector ',type ,length :content ,content :location ,var :temp t) |
95 | (unwind-protect |
96 | (progn ,@body) |
97 | (unset-c-vector ,var ',type ,length t)))))) |
98 | |
99 | |
100 | (define-type-method alien-type ((type vector)) |
101 | (declare (ignore type)) |
102 | (alien-type 'pointer)) |
103 | |
104 | (define-type-method size-of ((type vector) &key inlined) |
105 | (if inlined |
106 | (destructuring-bind (element-type &optional (length '*)) |
107 | (rest (type-expand-to 'vector type)) |
108 | (if (eq length '*) |
109 | (error "Can't inline vector with variable size: ~A" type) |
110 | (* (size-of element-type) length))) |
111 | (size-of 'pointer))) |
112 | |
83f60e84 |
113 | (define-type-method type-alignment ((type vector) &key inlined) |
114 | (if inlined |
115 | (destructuring-bind (element-type &optional (length '*)) |
116 | (rest (type-expand-to 'vector type)) |
117 | (if (eq length '*) |
118 | (error "Can't inline vector with variable size: ~A" type) |
119 | (* (type-alignment element-type) length))) |
120 | (type-alignment 'pointer))) |
121 | |
c14ae73f |
122 | (define-type-method alien-arg-wrapper ((type vector) var vector style form &optional copy-in-p) |
123 | (destructuring-bind (element-type &optional (length '*)) |
124 | (rest (type-expand-to 'vector type)) |
125 | (when (and (eq length '*) (out-arg-p style)) |
126 | (error "Can't use vector with variable size as return type")) |
127 | (cond |
128 | ((and (in-arg-p style) copy-in-p) |
129 | `(with-pointer (,var `(make-c-vector ',element-type |
130 | ,(if (eq length '*) `(length ,vector) length) |
131 | :content ,vector)) |
132 | ,form)) |
133 | ((and (in-arg-p style) (not (out-arg-p style))) |
134 | `(with-memory (,var ,(if (eq length '*) |
135 | `(* ,(size-of element-type) |
136 | (length ,vector)) |
137 | `(* ,(size-of element-type) ,length))) |
138 | (make-c-vector ',element-type |
139 | ,(if (eq length '*) `(length ,vector) length) |
140 | :content ,vector :location ,var :temp t) |
141 | (unwind-protect |
142 | ,form |
143 | (unset-c-vector ,var ',element-type |
144 | ,(if (eq length '*) `(length ,vector) length) t)))) |
145 | ((and (in-arg-p style) (out-arg-p style)) |
146 | (let ((c-vector (make-symbol "C-VECTOR"))) |
147 | `(with-memory (,c-vector (* ,(size-of element-type) length)) |
148 | (make-c-vector ',element-type ,length |
149 | :content ,vector :location ,c-vector :temp t) |
150 | (with-pointer (,var ,c-vector) |
151 | (unwind-protect |
152 | ,form |
153 | (unset-c-vector ,c-vector ',element-type ,length t)))))) |
154 | ((and (out-arg-p style) (not (in-arg-p style))) |
155 | `(with-pointer (,var) |
156 | ,form))))) |
157 | |
158 | ;; This will enable us specify vectors with variable length in C callbacks |
159 | (define-type-method callback-wrapper ((type vector) var vector form) |
160 | (funcall (find-applicable-type-method 'callback-wrapper t) type var vector form)) |
161 | |
162 | (define-type-method to-alien-form ((type vector) vector &optional copy-p) |
163 | (declare (ignore copy-p)) |
164 | (destructuring-bind (element-type &optional (length '*)) |
165 | (rest (type-expand-to 'vector type)) |
166 | `(make-c-vector ',element-type |
167 | ,(if (eq length '*) `(length ,vector) length) :content ,vector))) |
168 | |
169 | |
170 | (define-type-method from-alien-form ((type vector) form &key (ref :free)) |
171 | (destructuring-bind (element-type &optional (length '*)) |
172 | (rest (type-expand-to 'vector type)) |
173 | (if (eq length '*) |
174 | (error "Can't use vector of variable size as return type") |
175 | `(let ((c-vector ,form)) |
176 | (prog1 |
177 | (map-c-vector 'vector #'identity c-vector ',element-type ,length |
178 | ,(ecase ref (:free :get) ((:static :temp) :peek) (:copy :read))) |
179 | ,(when (eq ref :free) |
180 | `(deallocate-memory c-vector))))))) |
181 | |
182 | |
183 | (define-type-method writer-function ((type vector) &key temp inlined) |
184 | (destructuring-bind (element-type &optional (length '*)) |
185 | (rest (type-expand-to 'vector type)) |
186 | (if inlined |
187 | (if (eq length '*) |
188 | (error "Can't inline vector with variable size: ~A" type) |
189 | #'(lambda (vector location &optional (offset 0)) |
190 | (make-c-vector element-type length |
191 | :location (pointer+ location offset) |
192 | :content vector :temp temp))) |
193 | #'(lambda (vector location &optional (offset 0)) |
194 | (setf |
195 | (ref-pointer location offset) |
196 | (make-c-vector element-type length :content vector :temp temp)))))) |
197 | |
198 | (define-type-method reader-function ((type vector) &key (ref :read) inlined) |
199 | (destructuring-bind (element-type &optional (length '*)) |
200 | (rest (type-expand-to 'vector type)) |
201 | (cond |
202 | ((eq length '*) |
203 | (error "Can't create reader function for vector with variable size")) |
204 | (inlined |
205 | #'(lambda (location &optional (offset 0)) |
206 | (map-c-vector 'vector #'identity (pointer+ location offset) |
207 | element-type length ref))) |
208 | (t |
209 | (ecase ref |
210 | ((:read :peek) |
211 | #'(lambda (location &optional (offset 0)) |
212 | (unless (null-pointer-p (ref-pointer location offset)) |
213 | (map-c-vector 'vector #'identity (ref-pointer location offset) |
214 | element-type length ref)))) |
215 | (:get |
216 | #'(lambda (location &optional (offset 0)) |
217 | (unless (null-pointer-p (ref-pointer location offset)) |
218 | (prog1 |
219 | (map-c-vector 'vector #'identity |
220 | (ref-pointer location offset) element-type length :get) |
221 | (deallocate-memory (ref-pointer location offset)) |
222 | (setf (ref-pointer location offset) (make-pointer 0))))))))))) |
223 | |
224 | (define-type-method destroy-function ((type vector) &key temp inlined) |
225 | (destructuring-bind (element-type &optional (length '*)) |
226 | (rest (type-expand-to 'vector type)) |
227 | (cond |
228 | ((eq length '*) |
229 | (error "Can't create destroy function for vector with variable size")) |
230 | (inlined |
231 | #'(lambda (location &optional (offset 0)) |
232 | (unset-c-vector (pointer+ location offset) |
233 | element-type length temp))) |
234 | (t |
235 | #'(lambda (location &optional (offset 0)) |
236 | (unless (null-pointer-p (ref-pointer location offset)) |
237 | (destroy-c-vector (ref-pointer location offset) |
238 | element-type length temp) |
239 | (setf (ref-pointer location offset) (make-pointer 0)))))))) |
240 | |
241 | (define-type-method copy-function ((type vector) &key inlined) |
242 | (destructuring-bind (element-type &optional (length '*)) |
243 | (rest (type-expand-to 'vector type)) |
244 | (cond |
245 | ((eq length '*) (error "Can't copy vector with variable size: ~A" type)) |
246 | (inlined |
247 | (let ((copy-element (copy-function element-type)) |
248 | (element-size (size-of element-type))) |
249 | #'(lambda (from to &optional (offset 0)) |
250 | (loop |
251 | repeat length |
252 | for element from offset by element-size |
253 | do (funcall copy-element from to element))))) |
254 | (t |
255 | (let ((size (* length (size-of element-type))) |
256 | (copy-content (copy-function type :inlined t))) |
257 | #'(lambda (from to &optional (offset 0)) |
258 | (unless (null-pointer-p (ref-pointer from offset)) |
259 | (let ((vector (allocate-memory size))) |
260 | (setf (ref-pointer to offset) vector) |
261 | (funcall copy-content (ref-pointer from offset) vector))))))))) |
262 | |
263 | |
264 | ;;;; Null terminated vector |
265 | |
266 | (defun make-0-vector (type &key content location temp) |
267 | (let* ((element-size (size-of type)) |
268 | (length (length content)) |
269 | (location (or location (allocate-memory (* element-size (1+ length)))))) |
270 | (make-c-vector type length :content content :location location :temp temp))) |
271 | |
272 | |
273 | (defun map-0-vector (seqtype function location element-type &optional (ref :read)) |
274 | (let ((reader (reader-function element-type :ref ref)) |
275 | (element-size (size-of element-type))) |
276 | (case seqtype |
277 | ((nil) |
278 | (loop |
279 | for offset by element-size |
280 | until (memory-clear-p (pointer+ location offset) element-size) |
281 | do (funcall function (funcall reader location offset)))) |
282 | (list |
283 | (loop |
284 | for offset by element-size |
285 | until (memory-clear-p (pointer+ location offset) element-size) |
286 | collect (funcall function (funcall reader location offset)))) |
287 | (t |
288 | (coerce |
289 | (loop |
290 | for offset by element-size |
291 | until (memory-clear-p (pointer+ location offset) element-size) |
292 | collect (funcall function (funcall reader location offset))) |
293 | seqtype))))) |
294 | |
295 | |
296 | (defun unset-0-vector (location element-type &optional temp-p) |
297 | (loop |
298 | with destroy = (destroy-function element-type temp-p) |
299 | with element-size = (size-of element-type) |
300 | for offset by element-size |
301 | until (memory-clear-p (pointer+ location offset) element-size) |
302 | do (funcall destroy location offset))) |
303 | |
304 | (defun destroy-0-vector (location element-type &optional temp-p) |
305 | (unset-0-vector location element-type temp-p) |
306 | (deallocate-memory location)) |
307 | |
308 | |
309 | (deftype vector0 (element-type) `(vector ,element-type)) |
310 | (deftype null-terminated-vector (element-type) `(vector0 ,element-type)) |
311 | |
312 | (define-type-method alien-type ((type vector0)) |
313 | (declare (ignore type)) |
314 | (alien-type 'pointer)) |
315 | |
316 | (define-type-method size-of ((type vector0) &key inlined) |
317 | (assert-not-inlined type inlined) |
318 | (size-of 'pointer)) |
319 | |
83f60e84 |
320 | (define-type-method type-alignment ((type vector0) &key inlined) |
321 | (assert-not-inlined type inlined) |
322 | (type-alignment 'pointer)) |
323 | |
c14ae73f |
324 | (define-type-method alien-arg-wrapper ((type vector0) var vector style form &optional copy-in-p) |
325 | (destructuring-bind (element-type) (rest (type-expand-to 'vector0 type)) |
326 | (cond |
327 | ((and (in-arg-p style) copy-in-p) |
328 | `(with-pointer (,var (make-0-vector ',element-type :content ,vector)) |
329 | ,form)) |
330 | ((and (in-arg-p style) (not (out-arg-p style))) |
331 | `(with-memory (,var (* ,(size-of element-type) (1+ (length ,vector)))) |
332 | (make-0-vector ',element-type :content ,vector :location ,var :temp t) |
333 | (unwind-protect |
334 | ,form |
335 | (unset-0-vector ,var ',element-type t)))) |
336 | ((and (in-arg-p style) (out-arg-p style)) |
337 | (let ((c-vector (make-symbol "C-VECTOR"))) |
338 | `(with-memory (,c-vector (* ,(size-of element-type) (1+ (length ,vector)))) |
339 | (make-0-vector ',element-type :content ,vector :location ,c-vector :temp t) |
340 | (with-pointer (,var ,c-vector) |
341 | (unwind-protect |
342 | ,form |
343 | (unset-0-vector ,c-vector ',element-type t)))))) |
344 | ((and (out-arg-p style) (not (in-arg-p style))) |
345 | `(with-pointer (,var) |
346 | ,form))))) |
347 | |
348 | |
349 | (define-type-method to-alien-form ((type vector0) vector &optional copy-p) |
350 | (declare (ignore copy-p)) |
351 | (destructuring-bind (element-type) (rest (type-expand-to 'vector0 type)) |
352 | `(make-0-vector ',element-type :content ,vector))) |
353 | |
354 | (define-type-method from-alien-form ((type vector0) form &key (ref :free)) |
355 | (destructuring-bind (element-type) (rest (type-expand-to 'vector0 type)) |
356 | `(let ((c-vector ,form)) |
357 | (prog1 |
358 | (map-0-vector 'vector #'identity c-vector ',element-type |
359 | ,(ecase ref (:free :get) ((:static :temp) :peek) (:copy :read))) |
360 | ,(when (eq ref :free) |
361 | `(deallocate-memory c-vector)))))) |
362 | |
363 | |
364 | (define-type-method writer-function ((type vector0) &key temp inlined) |
365 | (assert-not-inlined type inlined) |
366 | (destructuring-bind (element-type) (rest (type-expand-to 'vector0 type)) |
367 | #'(lambda (vector location &optional (offset 0)) |
368 | (setf |
369 | (ref-pointer location offset) |
370 | (make-0-vector element-type :content vector :temp temp))))) |
371 | |
372 | (define-type-method reader-function ((type vector0) &key (ref :read) inlined) |
373 | (assert-not-inlined type inlined) |
374 | (destructuring-bind (element-type) (rest (type-expand-to 'vector0 type)) |
375 | (ecase ref |
376 | ((:read :peek) |
377 | #'(lambda (location &optional (offset 0)) |
378 | (unless (null-pointer-p (ref-pointer location offset)) |
379 | (map-0-vector 'vector #'identity (ref-pointer location offset) |
380 | element-type ref)))) |
381 | (:get |
382 | #'(lambda (location &optional (offset 0)) |
383 | (unless (null-pointer-p (ref-pointer location offset)) |
384 | (prog1 |
385 | (map-0-vector 'vector #'identity (ref-pointer location offset) |
386 | element-type :get) |
387 | (deallocate-memory (ref-pointer location offset)) |
388 | (setf (ref-pointer location offset) (make-pointer 0))))))))) |
389 | |
390 | |
391 | (define-type-method destroy-function ((type vector0) &key temp inlined) |
392 | (assert-not-inlined type inlined) |
393 | (destructuring-bind (element-type) (rest (type-expand-to 'vector0 type)) |
394 | #'(lambda (location &optional (offset 0)) |
395 | (unless (null-pointer-p (ref-pointer location offset)) |
396 | (destroy-0-vector |
397 | (ref-pointer location offset) element-type temp) |
398 | (setf (ref-pointer location offset) (make-pointer 0)))))) |
399 | |
400 | (define-type-method copy-function ((type vector0) &key inlined) |
401 | (assert-not-inlined type inlined) |
402 | (destructuring-bind (element-type) (rest (type-expand-to 'vector0 type)) |
403 | (let ((copy-element (copy-function element-type)) |
404 | (element-size (size-of element-type))) |
405 | #'(lambda (from to &optional (offset 0)) |
406 | (unless (null-pointer-p (ref-pointer from offset)) |
407 | (let* ((from-vector (ref-pointer from offset)) |
408 | (length |
409 | (loop |
410 | for length from 0 |
411 | for element by element-size |
412 | until (memory-clear-p from-vector element-size element) |
413 | finally (return length))) |
efc1c549 |
414 | (to-vector |
415 | (setf (ref-pointer to offset) |
416 | (allocate-memory (* (1+ length) element-size))))) |
c14ae73f |
417 | (loop |
418 | repeat length |
419 | for element by element-size |
420 | do (funcall copy-element from-vector to-vector element)))))))) |
421 | |
422 | (define-type-method unbound-value ((type vector0)) |
423 | (declare (ignore type)) |
424 | nil) |
425 | |
426 | |
427 | |
428 | ;;;; Counted vector |
429 | |
430 | (defun make-counted-vector (type &key content location (counter-type 'unsigned-int) temp) |
431 | (let* ((element-size (size-of type)) |
432 | (length (length content)) |
433 | (location (or |
434 | location |
435 | (allocate-memory |
436 | (+ (size-of counter-type) (* element-size length)))))) |
437 | (funcall (writer-function counter-type :temp temp) length location) |
438 | (make-c-vector type length :content content :location (pointer+ location (size-of counter-type))) |
439 | location)) |
440 | |
441 | (defun map-counted-vector (seqtype function location element-type &optional (counter-type 'unsigned-int) (ref :read)) |
442 | (let ((length (funcall (reader-function counter-type) location :ref ref))) |
443 | (map-c-vector |
444 | seqtype function (pointer+ location (size-of counter-type)) |
445 | element-type length))) |
446 | |
447 | (defun unset-counted-vector (location element-type &optional (counter-type 'unsigned-int) temp-p) |
448 | (let ((length (funcall (reader-function counter-type) location))) |
449 | (unset-c-vector |
450 | (pointer+ location (size-of counter-type)) element-type length temp-p))) |
451 | |
452 | (defun destroy-counted-vector (location element-type &optional (counter-type 'unsigned-int) temp-p) |
453 | (unset-counted-vector location element-type counter-type temp-p) |
454 | (deallocate-memory location)) |
455 | |
456 | |
457 | (deftype counted-vector (element-type &optional counter-type) |
458 | (declare (ignore counter-type)) |
459 | `(vector ,element-type)) |
460 | |
461 | (define-type-method alien-type ((type counted-vector)) |
462 | (declare (ignore type)) |
463 | (alien-type 'pointer)) |
464 | |
465 | (define-type-method size-of ((type counted-vector) &key inlined) |
466 | (assert-not-inlined type inlined) |
467 | (size-of 'pointer)) |
468 | |
83f60e84 |
469 | (define-type-method type-alignment ((type counted-vector) &key inlined) |
470 | (assert-not-inlined type inlined) |
471 | (type-alignment 'pointer)) |
472 | |
c14ae73f |
473 | (define-type-method alien-arg-wrapper ((type counted-vector) var vector style form &optional copy-in-p) |
474 | (destructuring-bind (element-type &optional (counter-type 'unsigned-int)) |
475 | (rest (type-expand-to 'counted-vector type)) |
476 | (cond |
477 | ((and (in-arg-p style) copy-in-p) |
478 | `(with-pointer (,var (make-counted-vector ',element-type |
479 | :content ,vector :counter-type ',counter-type)) |
480 | ,form)) |
481 | ((and (in-arg-p style) (not (out-arg-p style))) |
482 | `(with-memory (,var (+ (* ,(size-of element-type) (length ,vector)) ,(size-of counter-type))) |
483 | (make-counted-vector ',element-type :content ,vector |
484 | :location ,var :counter-type ',counter-type :temp t) |
485 | (unwind-protect |
486 | ,form |
487 | (unset-counted-vector ,var ',element-type ',counter-type t)))) |
488 | ((and (in-arg-p style) (out-arg-p style)) |
489 | (let ((c-vector (make-symbol "C-VECTOR"))) |
490 | `(with-memory (,c-vector (+ (* ,(size-of element-type) (length ,vector)) ,(size-of counter-type))) |
491 | (make-counted-vector ',element-type :content ,vector ,c-vector |
492 | :counter-type ',counter-type :temp t) |
493 | (with-pointer (,var ,c-vector) |
494 | (unwind-protect |
495 | ,form |
496 | (unset-counted-vector ,c-vector ',element-type ',counter-type t)))))) |
497 | ((and (out-arg-p style) (not (in-arg-p style))) |
498 | `(with-pointer (,var) |
499 | ,form))))) |
500 | |
501 | |
502 | (define-type-method to-alien-form ((type counted-vector) vector &optional copy-p) |
503 | (declare (ignore copy-p)) |
504 | (destructuring-bind (element-type &optional (counter-type 'unsigned-int)) |
505 | (rest (type-expand-to 'counted-vector type)) |
506 | `(make-counted-vector ',element-type |
507 | :content ,vector :counter-type ',counter-type))) |
508 | |
509 | (define-type-method from-alien-form ((type counted-vector) form &key (ref :free)) |
510 | (destructuring-bind (element-type &optional (counter-type 'unsigned-int)) |
511 | (rest (type-expand-to 'counted-vector type)) |
512 | `(let ((c-vector ,form)) |
513 | (prog1 |
514 | (map-counted-vector 'vector #'identity c-vector ',element-type ',counter-type |
515 | ,(ecase ref (:free :get) ((:static :temp) :peek) (:copy :read))) |
516 | ,(when (eq ref :free) |
517 | `(deallocate c-vector)))))) |
518 | |
519 | (define-type-method writer-function ((type counted-vector) &key temp inlined) |
520 | (assert-not-inlined type inlined) |
521 | (destructuring-bind (element-type &optional (counter-type 'unsigned-int)) |
522 | (rest (type-expand-to 'counted-vector type)) |
523 | #'(lambda (vector location &optional (offset 0)) |
524 | (setf |
525 | (ref-pointer location offset) |
526 | (make-counted-vector element-type :content vector |
527 | :counter-type counter-type :temp temp))))) |
528 | |
529 | (define-type-method reader-function ((type counted-vector) &key (ref :read) inlined) |
530 | (assert-not-inlined type inlined) |
531 | (destructuring-bind (element-type &optional (counter-type 'unsigned-int)) |
532 | (rest (type-expand-to 'counted-vector type)) |
533 | (ecase ref |
534 | ((:read :peek) |
535 | #'(lambda (location &optional (offset 0)) |
536 | (unless (null-pointer-p (ref-pointer location offset)) |
537 | (map-counted-vector 'vector #'identity |
538 | (ref-pointer location offset) element-type counter-type ref)))) |
539 | (:get |
540 | #'(lambda (location &optional (offset 0)) |
541 | (unless (null-pointer-p (ref-pointer location offset)) |
542 | (prog1 |
543 | (map-counted-vector 'vector #'identity |
544 | (ref-pointer location offset) element-type counter-type :get) |
545 | (deallocate-memory (ref-pointer location offset)) |
546 | (setf (ref-pointer location offset) (make-pointer 0))))))))) |
547 | |
548 | (define-type-method destroy-function ((type counted-vector) &key temp inlined) |
549 | (assert-not-inlined type inlined) |
550 | (destructuring-bind (element-type &optional (counter-type 'unsigned-int)) |
551 | (rest (type-expand-to 'counted-vector type)) |
552 | #'(lambda (location &optional (offset 0)) |
553 | (unless (null-pointer-p (ref-pointer location offset)) |
554 | (destroy-counted-vector (ref-pointer location offset) |
555 | element-type counter-type temp) |
556 | (setf (ref-pointer location offset) (make-pointer 0)))))) |
557 | |
558 | (define-type-method copy-function ((type counted-vector) &key inlined) |
559 | (assert-not-inlined type inlined) |
560 | (destructuring-bind (element-type &optional (counter-type 'unsigned-int)) |
561 | (rest (type-expand-to 'counted-vector type)) |
562 | (let ((vector-length (reader-function counter-type)) |
563 | (counter-size (size-of counter-type)) |
564 | (copy-element (copy-function element-type)) |
565 | (element-size (size-of element-type))) |
566 | #'(lambda (from to &optional (offset 0)) |
567 | (unless (null-pointer-p (ref-pointer from offset)) |
568 | (let* ((from-vector (ref-pointer from offset)) |
569 | (length (funcall vector-length from-vector)) |
570 | (to-vector (setf |
571 | (ref-pointer to offset) |
572 | (allocate-memory (+ counter-size (* length element-size)))))) |
573 | (copy-memory from-vector counter-size to-vector) |
574 | (loop |
575 | repeat length |
576 | for element from counter-size by element-size |
577 | do (funcall copy-element from-vector to-vector element)))))))) |