| 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 | |
| 23 | ;; $Id: vectors.lisp,v 1.2 2006/06/08 13:24:25 espen Exp $ |
| 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 | |
| 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 | |
| 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 | |
| 320 | (define-type-method type-alignment ((type vector0) &key inlined) |
| 321 | (assert-not-inlined type inlined) |
| 322 | (type-alignment 'pointer)) |
| 323 | |
| 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))) |
| 414 | (to-vector (setf |
| 415 | (ref-pointer to offset) |
| 416 | (allocate-memory (* length element-size))))) |
| 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 | |
| 469 | (define-type-method type-alignment ((type counted-vector) &key inlined) |
| 470 | (assert-not-inlined type inlined) |
| 471 | (type-alignment 'pointer)) |
| 472 | |
| 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)))))))) |