| 1 | ;; Common Lisp bindings for GTK+ 2.x |
| 2 | ;; Copyright 1999-2005 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: glib.lisp,v 1.36 2006/02/26 15:30:01 espen Exp $ |
| 24 | |
| 25 | |
| 26 | (in-package "GLIB") |
| 27 | |
| 28 | (use-prefix "g") |
| 29 | |
| 30 | |
| 31 | ;;;; Memory management |
| 32 | |
| 33 | (defbinding (allocate-memory "g_malloc0") () pointer |
| 34 | (size unsigned-long)) |
| 35 | |
| 36 | (defbinding (reallocate-memory "g_realloc") () pointer |
| 37 | (address pointer) |
| 38 | (size unsigned-long)) |
| 39 | |
| 40 | (defbinding (deallocate-memory "g_free") () nil |
| 41 | (address pointer)) |
| 42 | ;; (defun deallocate-memory (address) |
| 43 | ;; (declare (ignore address))) |
| 44 | |
| 45 | (defun copy-memory (from length &optional (to (allocate-memory length))) |
| 46 | #+cmu(system-area-copy from 0 to 0 (* 8 length)) |
| 47 | #+sbcl(system-area-ub8-copy from 0 to 0 length) |
| 48 | to) |
| 49 | |
| 50 | (defun clear-memory (from length) |
| 51 | #+cmu(vm::system-area-fill 0 from 0 (* 8 length)) |
| 52 | #+sbcl(system-area-ub8-fill 0 from 0 length)) |
| 53 | |
| 54 | (defmacro with-allocated-memory ((var size) &body body) |
| 55 | (if (constantp size) |
| 56 | (let ((alien (make-symbol "ALIEN")) |
| 57 | (size (eval size))) |
| 58 | `(with-alien ((,alien (array #+sbcl(sb-alien:unsigned 8) #+cmu(alien:unsigned 8) ,size))) |
| 59 | (let ((,var (alien-sap ,alien))) |
| 60 | (clear-memory ,var ,size) |
| 61 | ,@body))) |
| 62 | `(let ((,var (allocate-memory ,size))) |
| 63 | (unwind-protect |
| 64 | (progn ,@body) |
| 65 | (deallocate-memory ,var))))) |
| 66 | |
| 67 | |
| 68 | ;;;; User data mechanism |
| 69 | |
| 70 | (internal *user-data* *user-data-count*) |
| 71 | |
| 72 | (defvar *user-data* (make-hash-table)) |
| 73 | (defvar *user-data-count* 0) |
| 74 | |
| 75 | (defun register-user-data (object &optional destroy-function) |
| 76 | (check-type destroy-function (or null symbol function)) |
| 77 | (incf *user-data-count*) |
| 78 | (setf |
| 79 | (gethash *user-data-count* *user-data*) |
| 80 | (cons object destroy-function)) |
| 81 | *user-data-count*) |
| 82 | |
| 83 | (defun find-user-data (id) |
| 84 | (check-type id fixnum) |
| 85 | (multiple-value-bind (user-data p) (gethash id *user-data*) |
| 86 | (values (car user-data) p))) |
| 87 | |
| 88 | (defun user-data-exists-p (id) |
| 89 | (nth-value 1 (find-user-data id))) |
| 90 | |
| 91 | (defun update-user-data (id object) |
| 92 | (check-type id fixnum) |
| 93 | (multiple-value-bind (user-data exists-p) (gethash id *user-data*) |
| 94 | (cond |
| 95 | ((not exists-p) (error "User data id ~A does not exist" id)) |
| 96 | (t |
| 97 | (when (cdr user-data) |
| 98 | (funcall (cdr user-data) (car user-data))) |
| 99 | (setf (car user-data) object))))) |
| 100 | |
| 101 | (defun destroy-user-data (id) |
| 102 | (check-type id fixnum) |
| 103 | (let ((user-data (gethash id *user-data*))) |
| 104 | (when (cdr user-data) |
| 105 | (funcall (cdr user-data) (car user-data)))) |
| 106 | (remhash id *user-data*)) |
| 107 | |
| 108 | |
| 109 | ;;;; Quarks |
| 110 | |
| 111 | (deftype quark () 'unsigned) |
| 112 | |
| 113 | (defbinding %quark-from-string () quark |
| 114 | (string string)) |
| 115 | |
| 116 | (defun quark-intern (object) |
| 117 | (etypecase object |
| 118 | (quark object) |
| 119 | (string (%quark-from-string object)) |
| 120 | (symbol (%quark-from-string (format nil "clg-~A:~A" |
| 121 | (package-name (symbol-package object)) |
| 122 | object))))) |
| 123 | |
| 124 | (defbinding quark-to-string () (copy-of string) |
| 125 | (quark quark)) |
| 126 | |
| 127 | |
| 128 | ;;;; Linked list (GList) |
| 129 | |
| 130 | (deftype glist (type) |
| 131 | `(or null (cons ,type list))) |
| 132 | |
| 133 | (defbinding (%glist-append "g_list_append") () pointer |
| 134 | (glist pointer) |
| 135 | (nil null)) |
| 136 | |
| 137 | (defun make-glist (type list) |
| 138 | (loop |
| 139 | with writer = (writer-function type) |
| 140 | for element in list |
| 141 | as glist = (%glist-append (or glist (make-pointer 0))) |
| 142 | do (funcall writer element glist) |
| 143 | finally (return glist))) |
| 144 | |
| 145 | (defun glist-next (glist) |
| 146 | (unless (null-pointer-p glist) |
| 147 | (sap-ref-sap glist +size-of-pointer+))) |
| 148 | |
| 149 | ;; Also used for gslists |
| 150 | (defun map-glist (seqtype function glist element-type) |
| 151 | (let ((reader (reader-function element-type))) |
| 152 | (case seqtype |
| 153 | ((nil) |
| 154 | (loop |
| 155 | as tmp = glist then (glist-next tmp) |
| 156 | until (null-pointer-p tmp) |
| 157 | do (funcall function (funcall reader tmp)))) |
| 158 | (list |
| 159 | (loop |
| 160 | as tmp = glist then (glist-next tmp) |
| 161 | until (null-pointer-p tmp) |
| 162 | collect (funcall function (funcall reader tmp)))) |
| 163 | (t |
| 164 | (coerce |
| 165 | (loop |
| 166 | as tmp = glist then (glist-next tmp) |
| 167 | until (null-pointer-p tmp) |
| 168 | collect (funcall function (funcall reader tmp))) |
| 169 | seqtype))))) |
| 170 | |
| 171 | (defbinding (glist-free "g_list_free") () nil |
| 172 | (glist pointer)) |
| 173 | |
| 174 | (defun destroy-glist (glist element-type) |
| 175 | (loop |
| 176 | with destroy = (destroy-function element-type) |
| 177 | as tmp = glist then (glist-next tmp) |
| 178 | until (null-pointer-p tmp) |
| 179 | do (funcall destroy tmp 0)) |
| 180 | (glist-free glist)) |
| 181 | |
| 182 | (define-type-method alien-type ((type glist)) |
| 183 | (declare (ignore type)) |
| 184 | (alien-type 'pointer)) |
| 185 | |
| 186 | (define-type-method size-of ((type glist)) |
| 187 | (declare (ignore type)) |
| 188 | (size-of 'pointer)) |
| 189 | |
| 190 | (define-type-method to-alien-form ((type glist) list) |
| 191 | (let ((element-type (second (type-expand-to 'glist type)))) |
| 192 | `(make-glist ',element-type ,list))) |
| 193 | |
| 194 | (define-type-method to-alien-function ((type glist)) |
| 195 | (let ((element-type (second (type-expand-to 'glist type)))) |
| 196 | #'(lambda (list) |
| 197 | (make-glist element-type list)))) |
| 198 | |
| 199 | (define-type-method from-alien-form ((type glist) glist) |
| 200 | (let ((element-type (second (type-expand-to 'glist type)))) |
| 201 | `(let ((glist ,glist)) |
| 202 | (unwind-protect |
| 203 | (map-glist 'list #'identity glist ',element-type) |
| 204 | (destroy-glist glist ',element-type))))) |
| 205 | |
| 206 | (define-type-method from-alien-function ((type glist)) |
| 207 | (let ((element-type (second (type-expand-to 'glist type)))) |
| 208 | #'(lambda (glist) |
| 209 | (unwind-protect |
| 210 | (map-glist 'list #'identity glist element-type) |
| 211 | (destroy-glist glist element-type))))) |
| 212 | |
| 213 | (define-type-method copy-from-alien-form ((type glist) glist) |
| 214 | (let ((element-type (second (type-expand-to 'glist type)))) |
| 215 | `(map-glist 'list #'identity ,glist ',element-type))) |
| 216 | |
| 217 | (define-type-method copy-from-alien-function ((type glist)) |
| 218 | (let ((element-type (second (type-expand-to 'glist type)))) |
| 219 | #'(lambda (glist) |
| 220 | (map-glist 'list #'identity glist element-type)))) |
| 221 | |
| 222 | (define-type-method cleanup-form ((type glist) glist) |
| 223 | (let ((element-type (second (type-expand-to 'glist type)))) |
| 224 | `(destroy-glist ,glist ',element-type))) |
| 225 | |
| 226 | (define-type-method cleanup-function ((type glist)) |
| 227 | (let ((element-type (second (type-expand-to 'glist type)))) |
| 228 | #'(lambda (glist) |
| 229 | (destroy-glist glist element-type)))) |
| 230 | |
| 231 | (define-type-method writer-function ((type glist)) |
| 232 | (let ((element-type (second (type-expand-to 'glist type)))) |
| 233 | #'(lambda (list location &optional (offset 0)) |
| 234 | (setf |
| 235 | (sap-ref-sap location offset) |
| 236 | (make-glist element-type list))))) |
| 237 | |
| 238 | (define-type-method reader-function ((type glist)) |
| 239 | (let ((element-type (second (type-expand-to 'glist type)))) |
| 240 | #'(lambda (location &optional (offset 0) weak-p) |
| 241 | (declare (ignore weak-p)) |
| 242 | (unless (null-pointer-p (sap-ref-sap location offset)) |
| 243 | (map-glist 'list #'identity (sap-ref-sap location offset) element-type))))) |
| 244 | |
| 245 | (define-type-method destroy-function ((type glist)) |
| 246 | (let ((element-type (second (type-expand-to 'glist type)))) |
| 247 | #'(lambda (location &optional (offset 0)) |
| 248 | (unless (null-pointer-p (sap-ref-sap location offset)) |
| 249 | (destroy-glist (sap-ref-sap location offset) element-type) |
| 250 | (setf (sap-ref-sap location offset) (make-pointer 0)))))) |
| 251 | |
| 252 | |
| 253 | |
| 254 | ;;;; Single linked list (GSList) |
| 255 | |
| 256 | (deftype gslist (type) `(or null (cons ,type list))) |
| 257 | |
| 258 | (defbinding (%gslist-prepend "g_slist_prepend") () pointer |
| 259 | (gslist pointer) |
| 260 | (nil null)) |
| 261 | |
| 262 | (defun make-gslist (type list) |
| 263 | (loop |
| 264 | with writer = (writer-function type) |
| 265 | for element in (reverse list) |
| 266 | as gslist = (%gslist-prepend (or gslist (make-pointer 0))) |
| 267 | do (funcall writer element gslist) |
| 268 | finally (return gslist))) |
| 269 | |
| 270 | (defbinding (gslist-free "g_slist_free") () nil |
| 271 | (gslist pointer)) |
| 272 | |
| 273 | (defun destroy-gslist (gslist element-type) |
| 274 | (loop |
| 275 | with destroy = (destroy-function element-type) |
| 276 | as tmp = gslist then (glist-next tmp) |
| 277 | until (null-pointer-p tmp) |
| 278 | do (funcall destroy tmp 0)) |
| 279 | (gslist-free gslist)) |
| 280 | |
| 281 | (define-type-method alien-type ((type gslist)) |
| 282 | (declare (ignore type)) |
| 283 | (alien-type 'pointer)) |
| 284 | |
| 285 | (define-type-method size-of ((type gslist)) |
| 286 | (declare (ignore type)) |
| 287 | (size-of 'pointer)) |
| 288 | |
| 289 | (define-type-method to-alien-form ((type gslist) list) |
| 290 | (let ((element-type (second (type-expand-to 'gslist type)))) |
| 291 | `(make-sglist ',element-type ,list))) |
| 292 | |
| 293 | (define-type-method to-alien-function ((type gslist)) |
| 294 | (let ((element-type (second (type-expand-to 'gslist type)))) |
| 295 | #'(lambda (list) |
| 296 | (make-gslist element-type list)))) |
| 297 | |
| 298 | (define-type-method from-alien-form ((type gslist) gslist) |
| 299 | (let ((element-type (second (type-expand-to 'gslist type)))) |
| 300 | `(let ((gslist ,gslist)) |
| 301 | (unwind-protect |
| 302 | (map-glist 'list #'identity gslist ',element-type) |
| 303 | (destroy-gslist gslist ',element-type))))) |
| 304 | |
| 305 | (define-type-method from-alien-function ((type gslist)) |
| 306 | (let ((element-type (second (type-expand-to 'gslist type)))) |
| 307 | #'(lambda (gslist) |
| 308 | (unwind-protect |
| 309 | (map-glist 'list #'identity gslist element-type) |
| 310 | (destroy-gslist gslist element-type))))) |
| 311 | |
| 312 | (define-type-method copy-from-alien-form ((type gslist) gslist) |
| 313 | (let ((element-type (second (type-expand-to 'gslist type)))) |
| 314 | `(map-glist 'list #'identity ,gslist ',element-type))) |
| 315 | |
| 316 | (define-type-method copy-from-alien-function ((type gslist)) |
| 317 | (let ((element-type (second (type-expand-to 'gslist type)))) |
| 318 | #'(lambda (gslist) |
| 319 | (map-glist 'list #'identity gslist element-type)))) |
| 320 | |
| 321 | (define-type-method cleanup-form ((type gslist) gslist) |
| 322 | (let ((element-type (second (type-expand-to 'gslist type)))) |
| 323 | `(destroy-gslist ,gslist ',element-type))) |
| 324 | |
| 325 | (define-type-method cleanup-function ((type gslist)) |
| 326 | (let ((element-type (second (type-expand-to 'gslist type)))) |
| 327 | #'(lambda (gslist) |
| 328 | (destroy-gslist gslist element-type)))) |
| 329 | |
| 330 | (define-type-method writer-function ((type gslist)) |
| 331 | (let ((element-type (second (type-expand-to 'gslist type)))) |
| 332 | #'(lambda (list location &optional (offset 0)) |
| 333 | (setf |
| 334 | (sap-ref-sap location offset) |
| 335 | (make-gslist element-type list))))) |
| 336 | |
| 337 | (define-type-method reader-function ((type gslist)) |
| 338 | (let ((element-type (second (type-expand-to 'gslist type)))) |
| 339 | #'(lambda (location &optional (offset 0) weak-p) |
| 340 | (declare (ignore weak-p)) |
| 341 | (unless (null-pointer-p (sap-ref-sap location offset)) |
| 342 | (map-glist 'list #'identity (sap-ref-sap location offset) element-type))))) |
| 343 | |
| 344 | (define-type-method destroy-function ((type gslist)) |
| 345 | (let ((element-type (second (type-expand-to 'gslist type)))) |
| 346 | #'(lambda (location &optional (offset 0)) |
| 347 | (unless (null-pointer-p (sap-ref-sap location offset)) |
| 348 | (destroy-gslist (sap-ref-sap location offset) element-type) |
| 349 | (setf (sap-ref-sap location offset) (make-pointer 0)))))) |
| 350 | |
| 351 | |
| 352 | ;;; Vector |
| 353 | |
| 354 | (defun make-c-vector (type length &optional content location) |
| 355 | (let* ((size-of-type (size-of type)) |
| 356 | (location (or location (allocate-memory (* size-of-type length)))) |
| 357 | (writer (writer-function type))) |
| 358 | (etypecase content |
| 359 | (vector |
| 360 | (loop |
| 361 | for element across content |
| 362 | for i from 0 below length |
| 363 | as offset = 0 then (+ offset size-of-type) |
| 364 | do (funcall writer element location offset))) |
| 365 | (list |
| 366 | (loop |
| 367 | for element in content |
| 368 | for i from 0 below length |
| 369 | as offset = 0 then (+ offset size-of-type) |
| 370 | do (funcall writer element location offset)))) |
| 371 | location)) |
| 372 | |
| 373 | |
| 374 | (defun map-c-vector (seqtype function location element-type length) |
| 375 | (let ((reader (reader-function element-type)) |
| 376 | (size-of-element (size-of element-type))) |
| 377 | (case seqtype |
| 378 | ((nil) |
| 379 | (loop |
| 380 | for i from 0 below length |
| 381 | as offset = 0 then (+ offset size-of-element) |
| 382 | do (funcall function (funcall reader location offset)))) |
| 383 | (list |
| 384 | (loop |
| 385 | for i from 0 below length |
| 386 | as offset = 0 then (+ offset size-of-element) |
| 387 | collect (funcall function (funcall reader location offset)))) |
| 388 | (t |
| 389 | (loop |
| 390 | with sequence = (make-sequence seqtype length) |
| 391 | for i from 0 below length |
| 392 | as offset = 0 then (+ offset size-of-element) |
| 393 | do (setf |
| 394 | (elt sequence i) |
| 395 | (funcall function (funcall reader location offset))) |
| 396 | finally (return sequence)))))) |
| 397 | |
| 398 | |
| 399 | (defun destroy-c-vector (location element-type length) |
| 400 | (loop |
| 401 | with destroy = (destroy-function element-type) |
| 402 | with element-size = (size-of element-type) |
| 403 | for i from 0 below length |
| 404 | as offset = 0 then (+ offset element-size) |
| 405 | do (funcall destroy location offset)) |
| 406 | (deallocate-memory location)) |
| 407 | |
| 408 | |
| 409 | (define-type-method alien-type ((type vector)) |
| 410 | (declare (ignore type)) |
| 411 | (alien-type 'pointer)) |
| 412 | |
| 413 | (define-type-method size-of ((type vector)) |
| 414 | (declare (ignore type)) |
| 415 | (size-of 'pointer)) |
| 416 | |
| 417 | (define-type-method to-alien-form ((type vector) vector) |
| 418 | (destructuring-bind (element-type &optional (length '*)) |
| 419 | (rest (type-expand-to 'vector type)) |
| 420 | (if (eq length '*) |
| 421 | `(let* ((vector ,vector) |
| 422 | (location (sap+ |
| 423 | (allocate-memory (+ ,+size-of-int+ |
| 424 | (* ,(size-of element-type) |
| 425 | (length vector)))) |
| 426 | ,+size-of-int+))) |
| 427 | (make-c-vector ',element-type (length vector) vector location) |
| 428 | (setf (sap-ref-32 location ,(- +size-of-int+)) (length vector)) |
| 429 | location) |
| 430 | `(make-c-vector ',element-type ,length ,vector)))) |
| 431 | |
| 432 | (define-type-method from-alien-form ((type vector) c-vector) |
| 433 | (destructuring-bind (element-type &optional (length '*)) |
| 434 | (rest (type-expand-to 'vector type)) |
| 435 | (if (eq length '*) |
| 436 | (error "Can't use vector of variable size as return type") |
| 437 | `(let ((c-vector ,c-vector)) |
| 438 | (prog1 |
| 439 | (map-c-vector 'vector #'identity c-vector ',element-type ,length) |
| 440 | (destroy-c-vector c-vector ',element-type ,length)))))) |
| 441 | |
| 442 | (define-type-method copy-from-alien-form ((type vector) c-vector) |
| 443 | (destructuring-bind (element-type &optional (length '*)) |
| 444 | (rest (type-expand-to 'vector type)) |
| 445 | (if (eq length '*) |
| 446 | (error "Can't use vector of variable size as return type") |
| 447 | `(map-c-vector 'vector #'identity ,c-vector ',element-type ,length)))) |
| 448 | |
| 449 | (define-type-method copy-from-alien-function ((type vector)) |
| 450 | (destructuring-bind (element-type &optional (length '*)) |
| 451 | (rest (type-expand-to 'vector type)) |
| 452 | (if (eq length '*) |
| 453 | (error "Can't use vector of variable size as return type") |
| 454 | #'(lambda (c-vector) |
| 455 | (map-c-vector 'vector #'identity c-vector element-type length))))) |
| 456 | |
| 457 | (define-type-method cleanup-form ((type vector) location) |
| 458 | (destructuring-bind (element-type &optional (length '*)) |
| 459 | (rest (type-expand-to 'vector type)) |
| 460 | `(let* ((location ,location) |
| 461 | (length ,(if (eq length '*) |
| 462 | `(sap-ref-32 location ,(- +size-of-int+)) |
| 463 | length))) |
| 464 | (loop |
| 465 | with destroy = (destroy-function ',element-type) |
| 466 | for i from 0 below length |
| 467 | as offset = 0 then (+ offset ,(size-of element-type)) |
| 468 | do (funcall destroy location offset)) |
| 469 | (deallocate-memory ,(if (eq length '*) |
| 470 | `(sap+ location ,(- +size-of-int+)) |
| 471 | 'location))))) |
| 472 | |
| 473 | ;; We need these so that we can specify vectors with length given as |
| 474 | ;; a non constant in callbacks |
| 475 | (define-type-method callback-from-alien-form ((type vector) form) |
| 476 | (copy-from-alien-form type form)) |
| 477 | (define-type-method callback-cleanup-form ((type vector) form) |
| 478 | (declare (ignore type form)) |
| 479 | nil) |
| 480 | |
| 481 | |
| 482 | (define-type-method writer-function ((type vector)) |
| 483 | (destructuring-bind (element-type &optional (length '*)) |
| 484 | (rest (type-expand-to 'vector type)) |
| 485 | #'(lambda (vector location &optional (offset 0)) |
| 486 | (setf |
| 487 | (sap-ref-sap location offset) |
| 488 | (make-c-vector element-type length vector))))) |
| 489 | |
| 490 | (define-type-method reader-function ((type vector)) |
| 491 | (destructuring-bind (element-type &optional (length '*)) |
| 492 | (rest (type-expand-to 'vector type)) |
| 493 | (if (eq length '*) |
| 494 | (error "Can't create reader function for vector of variable size") |
| 495 | #'(lambda (location &optional (offset 0) weak-p) |
| 496 | (declare (ignore weak-p)) |
| 497 | (unless (null-pointer-p (sap-ref-sap location offset)) |
| 498 | (map-c-vector 'vector #'identity (sap-ref-sap location offset) |
| 499 | element-type length)))))) |
| 500 | |
| 501 | (define-type-method destroy-function ((type vector)) |
| 502 | (destructuring-bind (element-type &optional (length '*)) |
| 503 | (rest (type-expand-to 'vector type)) |
| 504 | (if (eq length '*) |
| 505 | (error "Can't create destroy function for vector of variable size") |
| 506 | #'(lambda (location &optional (offset 0)) |
| 507 | (unless (null-pointer-p (sap-ref-sap location offset)) |
| 508 | (destroy-c-vector |
| 509 | (sap-ref-sap location offset) element-type length) |
| 510 | (setf (sap-ref-sap location offset) (make-pointer 0))))))) |
| 511 | |
| 512 | |
| 513 | ;;;; Null terminated vector |
| 514 | |
| 515 | (defun make-0-vector (type content &optional location) |
| 516 | (let* ((size-of-type (size-of type)) |
| 517 | (location (or |
| 518 | location |
| 519 | (allocate-memory (* size-of-type (1+ (length content)))))) |
| 520 | (writer (writer-function type))) |
| 521 | (etypecase content |
| 522 | (vector |
| 523 | (loop |
| 524 | for element across content |
| 525 | as offset = 0 then (+ offset size-of-type) |
| 526 | do (funcall writer element location offset) |
| 527 | finally (setf (sap-ref-sap location offset) (make-pointer 0)))) |
| 528 | (list |
| 529 | (loop |
| 530 | for element in content |
| 531 | as offset = 0 then (+ offset size-of-type) |
| 532 | do (funcall writer element location offset) |
| 533 | finally (setf (sap-ref-sap location (+ offset size-of-type)) (make-pointer 0))))) |
| 534 | location)) |
| 535 | |
| 536 | |
| 537 | (defun map-0-vector (seqtype function location element-type) |
| 538 | (let ((reader (reader-function element-type)) |
| 539 | (size-of-element (size-of element-type))) |
| 540 | (case seqtype |
| 541 | ((nil) |
| 542 | (loop |
| 543 | as offset = 0 then (+ offset size-of-element) |
| 544 | until (null-pointer-p (sap-ref-sap location offset)) |
| 545 | do (funcall function (funcall reader location offset)))) |
| 546 | (list |
| 547 | (loop |
| 548 | as offset = 0 then (+ offset size-of-element) |
| 549 | until (null-pointer-p (sap-ref-sap location offset)) |
| 550 | collect (funcall function (funcall reader location offset)))) |
| 551 | (t |
| 552 | (coerce |
| 553 | (loop |
| 554 | as offset = 0 then (+ offset size-of-element) |
| 555 | until (null-pointer-p (sap-ref-sap location offset)) |
| 556 | collect (funcall function (funcall reader location offset))) |
| 557 | seqtype))))) |
| 558 | |
| 559 | |
| 560 | (defun destroy-0-vector (location element-type) |
| 561 | (loop |
| 562 | with destroy = (destroy-function element-type) |
| 563 | with element-size = (size-of element-type) |
| 564 | as offset = 0 then (+ offset element-size) |
| 565 | until (null-pointer-p (sap-ref-sap location offset)) |
| 566 | do (funcall destroy location offset)) |
| 567 | (deallocate-memory location)) |
| 568 | |
| 569 | (deftype null-terminated-vector (element-type) `(vector ,element-type)) |
| 570 | |
| 571 | (define-type-method alien-type ((type null-terminated-vector)) |
| 572 | (declare (ignore type)) |
| 573 | (alien-type 'pointer)) |
| 574 | |
| 575 | (define-type-method size-of ((type null-terminated-vector)) |
| 576 | (declare (ignore type)) |
| 577 | (size-of 'pointer)) |
| 578 | |
| 579 | (define-type-method to-alien-form ((type null-terminated-vector) vector) |
| 580 | (destructuring-bind (element-type) |
| 581 | (rest (type-expand-to 'null-terminated-vector type)) |
| 582 | `(make-0-vector ',element-type ,vector))) |
| 583 | |
| 584 | (define-type-method from-alien-form ((type null-terminated-vector) c-vector) |
| 585 | (destructuring-bind (element-type) |
| 586 | (rest (type-expand-to 'null-terminated-vector type)) |
| 587 | `(let ((c-vector ,c-vector)) |
| 588 | (prog1 |
| 589 | (map-0-vector 'vector #'identity c-vector ',element-type) |
| 590 | (destroy-0-vector c-vector ',element-type))))) |
| 591 | |
| 592 | (define-type-method copy-from-alien-form ((type null-terminated-vector) c-vector) |
| 593 | (destructuring-bind (element-type) |
| 594 | (rest (type-expand-to 'null-terminated-vector type)) |
| 595 | `(map-0-vector 'vector #'identity ,c-vector ',element-type))) |
| 596 | |
| 597 | (define-type-method cleanup-form ((type null-terminated-vector) location) |
| 598 | (destructuring-bind (element-type) |
| 599 | (rest (type-expand-to 'null-terminated-vector type)) |
| 600 | `(destroy-0-vector ,location ',element-type))) |
| 601 | |
| 602 | (define-type-method writer-function ((type null-terminated-vector)) |
| 603 | (destructuring-bind (element-type) |
| 604 | (rest (type-expand-to 'null-terminated-vector type)) |
| 605 | (unless (eq (alien-type element-type) (alien-type 'pointer)) |
| 606 | (error "Elements in null-terminated vectors need to be of pointer types")) |
| 607 | #'(lambda (vector location &optional (offset 0)) |
| 608 | (setf |
| 609 | (sap-ref-sap location offset) |
| 610 | (make-0-vector element-type vector))))) |
| 611 | |
| 612 | (define-type-method reader-function ((type null-terminated-vector)) |
| 613 | (destructuring-bind (element-type) |
| 614 | (rest (type-expand-to 'null-terminated-vector type)) |
| 615 | (unless (eq (alien-type element-type) (alien-type 'pointer)) |
| 616 | (error "Elements in null-terminated vectors need to be of pointer types")) |
| 617 | #'(lambda (location &optional (offset 0) weak-p) |
| 618 | (declare (ignore weak-p)) |
| 619 | (unless (null-pointer-p (sap-ref-sap location offset)) |
| 620 | (map-0-vector 'vector #'identity (sap-ref-sap location offset) |
| 621 | element-type))))) |
| 622 | |
| 623 | (define-type-method destroy-function ((type null-terminated-vector)) |
| 624 | (destructuring-bind (element-type) |
| 625 | (rest (type-expand-to 'null-terminated-vector type)) |
| 626 | (unless (eq (alien-type element-type) (alien-type 'pointer)) |
| 627 | (error "Elements in null-terminated vectors need to be of pointer types")) |
| 628 | #'(lambda (location &optional (offset 0)) |
| 629 | (unless (null-pointer-p (sap-ref-sap location offset)) |
| 630 | (destroy-0-vector |
| 631 | (sap-ref-sap location offset) element-type) |
| 632 | (setf (sap-ref-sap location offset) (make-pointer 0)))))) |
| 633 | |
| 634 | (define-type-method unbound-value ((type null-terminated-vector)) |
| 635 | (declare (ignore type)) |
| 636 | nil) |
| 637 | |
| 638 | |
| 639 | |
| 640 | |
| 641 | ;;; Counted vector |
| 642 | |
| 643 | (defun make-counted-vector (type content) |
| 644 | (let* ((size-of-type (size-of type)) |
| 645 | (length (length content)) |
| 646 | (location |
| 647 | (allocate-memory (+ +size-of-int+ (* size-of-type length))))) |
| 648 | (setf (sap-ref-32 location 0) length) |
| 649 | (make-c-vector type length content (sap+ location +size-of-int+)))) |
| 650 | |
| 651 | (defun map-counted-vector (seqtype function location element-type) |
| 652 | (let ((length (sap-ref-32 location 0))) |
| 653 | (map-c-vector |
| 654 | seqtype function (sap+ location +size-of-int+) |
| 655 | element-type length))) |
| 656 | |
| 657 | (defun destroy-counted-vector (location element-type) |
| 658 | (loop |
| 659 | with destroy = (destroy-function element-type) |
| 660 | with element-size = (size-of element-type) |
| 661 | for i from 0 below (sap-ref-32 location 0) |
| 662 | as offset = +size-of-int+ then (+ offset element-size) |
| 663 | do (funcall destroy location offset)) |
| 664 | (deallocate-memory location)) |
| 665 | |
| 666 | |
| 667 | (deftype counted-vector (element-type) `(vector ,element-type)) |
| 668 | |
| 669 | (define-type-method alien-type ((type counted-vector)) |
| 670 | (declare (ignore type)) |
| 671 | (alien-type 'pointer)) |
| 672 | |
| 673 | (define-type-method size-of ((type counted-vector)) |
| 674 | (declare (ignore type)) |
| 675 | (size-of 'pointer)) |
| 676 | |
| 677 | (define-type-method to-alien-form ((type counted-vector) vector) |
| 678 | (destructuring-bind (element-type) |
| 679 | (rest (type-expand-to 'counted-vector type)) |
| 680 | `(make-counted-vector ',element-type ,vector))) |
| 681 | |
| 682 | (define-type-method from-alien-form ((type counted-vector) c-vector) |
| 683 | (destructuring-bind (element-type) |
| 684 | (rest (type-expand-to 'counted-vector type)) |
| 685 | `(let ((c-vector ,c-vector)) |
| 686 | (prog1 |
| 687 | (map-counted-vector 'vector #'identity c-vector ',element-type) |
| 688 | (destroy-counted-vector c-vector ',element-type))))) |
| 689 | |
| 690 | (define-type-method copy-from-alien-form ((type counted-vector) c-vector) |
| 691 | (destructuring-bind (element-type) |
| 692 | (rest (type-expand-to 'counted-vector type)) |
| 693 | `(map-counted-vector 'vector #'identity ,c-vector ',element-type))) |
| 694 | |
| 695 | (define-type-method copy-from-alien-function ((type counted-vector)) |
| 696 | (destructuring-bind (element-type) |
| 697 | (rest (type-expand-to 'counted-vector type)) |
| 698 | #'(lambda (c-vector) |
| 699 | (map-counted-vector 'vector #'identity c-vector element-type)))) |
| 700 | |
| 701 | (define-type-method cleanup-form ((type counted-vector) location) |
| 702 | (destructuring-bind (element-type) |
| 703 | (rest (type-expand-to 'counted-vector type)) |
| 704 | `(destroy-counted-vector ,location ',element-type))) |
| 705 | |
| 706 | (define-type-method writer-function ((type counted-vector)) |
| 707 | (destructuring-bind (element-type) |
| 708 | (rest (type-expand-to 'counted-vector type)) |
| 709 | #'(lambda (vector location &optional (offset 0)) |
| 710 | (setf |
| 711 | (sap-ref-sap location offset) |
| 712 | (make-counted-vector element-type vector))))) |
| 713 | |
| 714 | (define-type-method reader-function ((type counted-vector)) |
| 715 | (destructuring-bind (element-type) |
| 716 | (rest (type-expand-to 'counted-vector type)) |
| 717 | #'(lambda (location &optional (offset 0) weak-p) |
| 718 | (declare (ignore weak-p)) |
| 719 | (unless (null-pointer-p (sap-ref-sap location offset)) |
| 720 | (map-counted-vector 'vector #'identity |
| 721 | (sap-ref-sap location offset) element-type))))) |
| 722 | |
| 723 | (define-type-method destroy-function ((type counted-vector)) |
| 724 | (destructuring-bind (element-type) |
| 725 | (rest (type-expand-to 'counted-vector type)) |
| 726 | #'(lambda (location &optional (offset 0)) |
| 727 | (unless (null-pointer-p (sap-ref-sap location offset)) |
| 728 | (destroy-counted-vector |
| 729 | (sap-ref-sap location offset) element-type) |
| 730 | (setf (sap-ref-sap location offset) (make-pointer 0)))))) |