;; License along with this library; if not, write to the Free Software
;; Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-;; $Id: glib.lisp,v 1.14 2004/10/31 11:37:11 espen Exp $
+;; $Id: glib.lisp,v 1.27 2005/02/14 00:44:26 espen Exp $
(in-package "GLIB")
(defbinding (deallocate-memory "g_free") () nil
(address pointer))
-;(defun deallocate-memory (address)
-; (declare (ignore address)))
+;; (defun deallocate-memory (address)
+;; (declare (ignore address)))
(defun copy-memory (from length &optional (to (allocate-memory length)))
- (kernel:system-area-copy from 0 to 0 (* 8 length))
+ (;#+cmu kernel:system-area-copy
+ ;#+sbcl sb-impl::system-area-copy
+ system-area-copy from 0 to 0 (* 8 length))
to)
(internal *user-data* *user-data-count*)
-(declaim (fixnum *user-data-count*))
-
-(defvar *destroy-notify* (system:foreign-symbol-address "destroy_notify"))
(defvar *user-data* (make-hash-table))
(defvar *user-data-count* 0)
(multiple-value-bind (user-data p) (gethash id *user-data*)
(values (car user-data) p)))
+(defun user-data-exists-p (id)
+ (nth-value 1 (find-user-data id)))
+
+(defun update-user-data (id object)
+ (check-type id fixnum)
+ (multiple-value-bind (user-data exists-p) (gethash id *user-data*)
+ (cond
+ ((not exists-p) (error "User data id ~A does not exist" id))
+ (t
+ (when (cdr user-data)
+ (funcall (cdr user-data) (car user-data)))
+ (setf (car user-data) object)))))
+
(defun destroy-user-data (id)
(check-type id fixnum)
(let ((user-data (gethash id *user-data*)))
(remhash id *user-data*))
-
;;;; Quarks
-(internal *quark-counter* *quark-from-object* *quark-to-object*)
-
(deftype quark () 'unsigned)
-;(defbinding %quark-get-reserved () quark)
-
(defbinding %quark-from-string () quark
(string string))
-(defvar *quark-counter* 0)
-
-(defun %quark-get-reserved ()
- ;; The string is just a dummy
- (%quark-from-string (format nil "#@£$%&-quark-~D" (incf *quark-counter*))))
-
-(defvar *quark-from-object* (make-hash-table))
-(defvar *quark-to-object* (make-hash-table))
-
-(defun quark-from-object (object &key (test #'eq))
- (let ((hash-code (sxhash object)))
- (or
- (assoc-ref object (gethash hash-code *quark-from-object*) :test test)
- (let ((quark (%quark-get-reserved)))
- (setf
- (gethash hash-code *quark-from-object*)
- (append
- (gethash hash-code *quark-from-object*)
- (list (cons object quark))))
- (setf (gethash quark *quark-to-object*) object)
- quark))))
-
-(defun quark-to-object (quark)
- (gethash quark *quark-to-object*))
-
-(defun remove-quark (quark)
- (let* ((object (gethash quark *quark-to-object*))
- (hash-code (sxhash object)))
- (remhash quark *quark-to-object*)
- (unless (setf
- (gethash hash-code *quark-from-object*)
- (assoc-delete object (gethash hash-code *quark-from-object*)))
- (remhash hash-code *quark-from-object*))))
+(defun quark-intern (object)
+ (etypecase object
+ (quark object)
+ (string (%quark-from-string object))
+ (symbol (%quark-from-string (format nil "clg-~A:~A"
+ (package-name (symbol-package object))
+ object)))))
+(defbinding quark-to-string () (copy-of string)
+ (quark quark))
;;;; Linked list (GList)
-(deftype glist (type) `(or (null (cons ,type list))))
-
-(defbinding (%glist-append-unsigned "g_list_append") () pointer
- (glist pointer)
- (data unsigned))
-
-(defbinding (%glist-append-signed "g_list_append") () pointer
- (glist pointer)
- (data signed))
+(deftype glist (type)
+ `(or (null (cons ,type list))))
-(defbinding (%glist-append-sap "g_list_append") () pointer
+(defbinding (%glist-append "g_list_append") () pointer
(glist pointer)
- (data pointer))
-
-(defmacro glist-append (glist value type-spec)
- (ecase (first (mklist (translate-type-spec type-spec)))
- (unsigned `(%glist-append-unsigned ,glist ,value))
- (signed `(%glist-append-signed ,glist ,value))
- (system-area-pointer `(%glist-append-sap ,glist ,value))))
+ (nil null))
-(defmacro glist-data (glist type-spec)
- (ecase (first (mklist (translate-type-spec type-spec)))
- (unsigned `(sap-ref-unsigned ,glist 0))
- (signed `(sap-ref-signed ,glist 0))
- (system-area-pointer `(sap-ref-sap ,glist 0))))
+(defun make-glist (type list)
+ (loop
+ with writer = (writer-function type)
+ for element in list
+ as glist = (%glist-append (or glist (make-pointer 0)))
+ do (funcall writer element glist)
+ finally (return glist)))
(defun glist-next (glist)
(unless (null-pointer-p glist)
- (sap-ref-sap glist +size-of-sap+)))
+ (sap-ref-sap glist +size-of-pointer+)))
+;; Also used for gslists
+(defun map-glist (seqtype function glist element-type)
+ (let ((reader (reader-function element-type)))
+ (case seqtype
+ ((nil)
+ (loop
+ as tmp = glist then (glist-next tmp)
+ until (null-pointer-p tmp)
+ do (funcall function (funcall reader tmp))))
+ (list
+ (loop
+ as tmp = glist then (glist-next tmp)
+ until (null-pointer-p tmp)
+ collect (funcall function (funcall reader tmp))))
+ (t
+ (coerce
+ (loop
+ as tmp = glist then (glist-next tmp)
+ until (null-pointer-p tmp)
+ collect (funcall function (funcall reader tmp)))
+ seqtype)))))
+
(defbinding (glist-free "g_list_free") () nil
(glist pointer))
-(deftype-method translate-type-spec glist (type-spec)
- (declare (ignore type-spec))
- (translate-type-spec 'pointer))
+(defun destroy-glist (glist element-type)
+ (loop
+ with destroy = (destroy-function element-type)
+ as tmp = glist then (glist-next tmp)
+ until (null-pointer-p tmp)
+ do (funcall destroy tmp 0))
+ (glist-free glist))
-(deftype-method size-of glist (type-spec)
- (declare (ignore type-spec))
+(defmethod alien-type ((type (eql 'glist)) &rest args)
+ (declare (ignore type args))
+ (alien-type 'pointer))
+
+(defmethod size-of ((type (eql 'glist)) &rest args)
+ (declare (ignore type args))
(size-of 'pointer))
-(deftype-method translate-to-alien glist (type-spec list &optional weak-ref)
- (declare (ignore weak-ref))
- (let* ((element-type (second (type-expand-to 'glist type-spec)))
- (element (translate-to-alien element-type 'element)))
- `(let ((glist (make-pointer 0)))
- (dolist (element ,list glist)
- (setq glist (glist-append glist ,element ,element-type))))))
-
-(deftype-method translate-from-alien
- glist (type-spec glist &optional weak-ref)
- (let ((element-type (second (type-expand-to 'glist type-spec))))
- `(let ((glist ,glist)
- (list nil))
- (do ((tmp glist (glist-next tmp)))
- ((null-pointer-p tmp))
- (push
- ,(translate-from-alien
- element-type `(glist-data tmp ,element-type) weak-ref)
- list))
- ,(unless weak-ref
- '(glist-free glist))
- (nreverse list))))
-
-(deftype-method cleanup-alien glist (type-spec glist &optional weak-ref)
- (when weak-ref
- (unreference-alien type-spec glist)))
-
-(deftype-method unreference-alien glist (type-spec glist)
- (let ((element-type (second (type-expand-to 'glist type-spec))))
+(defmethod to-alien-form (list (type (eql 'glist)) &rest args)
+ (declare (ignore type))
+ (destructuring-bind (element-type) args
+ `(make-glist ',element-type ,list)))
+
+(defmethod to-alien-function ((type (eql 'glist)) &rest args)
+ (declare (ignore type))
+ (destructuring-bind (element-type) args
+ #'(lambda (list)
+ (make-glist element-type list))))
+
+(defmethod from-alien-form (glist (type (eql 'glist)) &rest args)
+ (declare (ignore type))
+ (destructuring-bind (element-type) args
`(let ((glist ,glist))
- (unless (null-pointer-p glist)
- ,(unless (atomic-type-p element-type)
- `(do ((tmp glist (glist-next tmp)))
- ((null-pointer-p tmp))
- ,(unreference-alien
- element-type `(glist-data tmp ,element-type))))
- (glist-free glist)))))
+ (unwind-protect
+ (map-glist 'list #'identity glist ',element-type)
+ (destroy-glist glist ',element-type)))))
+
+(defmethod from-alien-function ((type (eql 'glist)) &rest args)
+ (declare (ignore type))
+ (destructuring-bind (element-type) args
+ #'(lambda (glist)
+ (unwind-protect
+ (map-glist 'list #'identity glist element-type)
+ (destroy-glist glist element-type)))))
+
+(defmethod copy-from-alien-form (glist (type (eql 'glist)) &rest args)
+ (declare (ignore type))
+ (destructuring-bind (element-type) args
+ `(map-glist 'list #'identity ,glist ',element-type)))
+
+(defmethod copy-from-alien-function ((type (eql 'glist)) &rest args)
+ (declare (ignore type))
+ (destructuring-bind (element-type) args
+ #'(lambda (glist)
+ (map-glist 'list #'identity glist element-type))))
+
+(defmethod cleanup-form (glist (type (eql 'glist)) &rest args)
+ (declare (ignore type))
+ (destructuring-bind (element-type) args
+ `(destroy-glist ,glist ',element-type)))
+
+(defmethod cleanup-function ((type (eql 'glist)) &rest args)
+ (declare (ignore type))
+ (destructuring-bind (element-type) args
+ #'(lambda (glist)
+ (destroy-glist glist element-type))))
+
+(defmethod writer-function ((type (eql 'glist)) &rest args)
+ (declare (ignore type))
+ (destructuring-bind (element-type) args
+ #'(lambda (list location &optional (offset 0))
+ (setf
+ (sap-ref-sap location offset)
+ (make-glist element-type list)))))
+
+(defmethod reader-function ((type (eql 'glist)) &rest args)
+ (declare (ignore type))
+ (destructuring-bind (element-type) args
+ #'(lambda (location &optional (offset 0))
+ (unless (null-pointer-p (sap-ref-sap location offset))
+ (map-glist 'list #'identity (sap-ref-sap location offset) element-type)))))
+
+(defmethod destroy-function ((type (eql 'glist)) &rest args)
+ (declare (ignore type))
+ (destructuring-bind (element-type) args
+ #'(lambda (location &optional (offset 0))
+ (unless (null-pointer-p (sap-ref-sap location offset))
+ (destroy-glist (sap-ref-sap location offset) element-type)
+ (setf (sap-ref-sap location offset) (make-pointer 0))))))
+
;;;; Single linked list (GSList)
(deftype gslist (type) `(or (null (cons ,type list))))
-(defbinding (%gslist-prepend-unsigned "g_slist_prepend") () pointer
+(defbinding (%gslist-prepend "g_slist_prepend") () pointer
(gslist pointer)
- (data unsigned))
+ (nil null))
-(defbinding (%gslist-prepend-signed "g_slist_prepend") () pointer
- (gslist pointer)
- (data signed))
-
-(defbinding (%gslist-prepend-sap "g_slist_prepend") () pointer
- (gslist pointer)
- (data pointer))
+(defun make-gslist (type list)
+ (loop
+ with writer = (writer-function type)
+ for element in (reverse list)
+ as gslist = (%gslist-prepend (or gslist (make-pointer 0)))
+ do (funcall writer element gslist)
+ finally (return gslist)))
-(defmacro gslist-prepend (gslist value type-spec)
- (ecase (first (mklist (translate-type-spec type-spec)))
- (unsigned `(%gslist-prepend-unsigned ,gslist ,value))
- (signed `(%gslist-prepend-signed ,gslist ,value))
- (system-area-pointer `(%gslist-prepend-sap ,gslist ,value))))
-
(defbinding (gslist-free "g_slist_free") () nil
(gslist pointer))
-(deftype-method translate-type-spec gslist (type-spec)
- (declare (ignore type-spec))
- (translate-type-spec 'pointer))
+(defun destroy-gslist (gslist element-type)
+ (loop
+ with destroy = (destroy-function element-type)
+ as tmp = gslist then (glist-next tmp)
+ until (null-pointer-p tmp)
+ do (funcall destroy tmp 0))
+ (gslist-free gslist))
+
+(defmethod alien-type ((type (eql 'gslist)) &rest args)
+ (declare (ignore type args))
+ (alien-type 'pointer))
-(deftype-method size-of gslist (type-spec)
- (declare (ignore type-spec))
+(defmethod size-of ((type (eql 'gslist)) &rest args)
+ (declare (ignore type args))
(size-of 'pointer))
-(deftype-method translate-to-alien gslist (type-spec list &optional weak-ref)
- (declare (ignore weak-ref))
- (let* ((element-type (second (type-expand-to 'gslist type-spec)))
- (element (translate-to-alien element-type 'element)))
- `(let ((gslist (make-pointer 0)))
- (dolist (element (reverse ,list) gslist)
- (setq gslist (gslist-prepend gslist ,element ,element-type))))))
-
-(deftype-method translate-from-alien
- gslist (type-spec gslist &optional weak-ref)
- (let ((element-type (second (type-expand-to 'gslist type-spec))))
- `(let ((gslist ,gslist)
- (list nil))
- (do ((tmp gslist (glist-next tmp)))
- ((null-pointer-p tmp))
- (push
- ,(translate-from-alien
- element-type `(glist-data tmp ,element-type) weak-ref)
- list))
- ,(unless weak-ref
- '(gslist-free gslist))
- (nreverse list))))
-
-(deftype-method cleanup-alien gslist (type-spec gslist &optional weak-ref)
- (when weak-ref
- (unreference-alien type-spec gslist)))
-
-(deftype-method unreference-alien gslist (type-spec gslist)
- (let ((element-type (second (type-expand-to 'gslist type-spec))))
- `(let ((gslist ,gslist))
- (unless (null-pointer-p gslist)
- ,(unless (atomic-type-p element-type)
- `(do ((tmp gslist (glist-next tmp)))
- ((null-pointer-p tmp))
- ,(unreference-alien
- element-type `(glist-data tmp ,element-type))))
- (gslist-free gslist)))))
+(defmethod to-alien-form (list (type (eql 'gslist)) &rest args)
+ (declare (ignore type))
+ (destructuring-bind (element-type) args
+ `(make-sglist ',element-type ,list)))
+(defmethod to-alien-function ((type (eql 'gslist)) &rest args)
+ (declare (ignore type))
+ (destructuring-bind (element-type) args
+ #'(lambda (list)
+ (make-gslist element-type list))))
+
+(defmethod from-alien-form (gslist (type (eql 'gslist)) &rest args)
+ (declare (ignore type))
+ (destructuring-bind (element-type) args
+ `(let ((gslist ,gslist))
+ (unwind-protect
+ (map-glist 'list #'identity gslist ',element-type)
+ (destroy-gslist gslist ',element-type)))))
+
+(defmethod from-alien-function ((type (eql 'gslist)) &rest args)
+ (declare (ignore type))
+ (destructuring-bind (element-type) args
+ #'(lambda (gslist)
+ (unwind-protect
+ (map-glist 'list #'identity gslist element-type)
+ (destroy-gslist gslist element-type)))))
+
+(defmethod copy-from-alien-form (gslist (type (eql 'gslist)) &rest args)
+ (declare (ignore type))
+ (destructuring-bind (element-type) args
+ `(map-glist 'list #'identity ,gslist ',element-type)))
+
+(defmethod copy-from-alien-function ((type (eql 'gslist)) &rest args)
+ (declare (ignore type))
+ (destructuring-bind (element-type) args
+ #'(lambda (gslist)
+ (map-glist 'list #'identity gslist element-type))))
+
+(defmethod cleanup-form (gslist (type (eql 'gslist)) &rest args)
+ (declare (ignore type))
+ (destructuring-bind (element-type) args
+ `(destroy-gslist ,gslist ',element-type)))
+
+(defmethod cleanup-function ((type (eql 'gslist)) &rest args)
+ (declare (ignore type))
+ (destructuring-bind (element-type) args
+ #'(lambda (gslist)
+ (destroy-gslist gslist element-type))))
+
+(defmethod writer-function ((type (eql 'gslist)) &rest args)
+ (declare (ignore type))
+ (destructuring-bind (element-type) args
+ #'(lambda (list location &optional (offset 0))
+ (setf
+ (sap-ref-sap location offset)
+ (make-gslist element-type list)))))
+
+(defmethod reader-function ((type (eql 'gslist)) &rest args)
+ (declare (ignore type))
+ (destructuring-bind (element-type) args
+ #'(lambda (location &optional (offset 0))
+ (unless (null-pointer-p (sap-ref-sap location offset))
+ (map-glist 'list #'identity (sap-ref-sap location offset) element-type)))))
+
+(defmethod destroy-function ((type (eql 'gslist)) &rest args)
+ (declare (ignore type))
+ (destructuring-bind (element-type) args
+ #'(lambda (location &optional (offset 0))
+ (unless (null-pointer-p (sap-ref-sap location offset))
+ (destroy-gslist (sap-ref-sap location offset) element-type)
+ (setf (sap-ref-sap location offset) (make-pointer 0))))))
;;; Vector
-(defvar *magic-end-of-array* (allocate-memory 1))
+(defun make-c-vector (type length &optional content location)
+ (let* ((size-of-type (size-of type))
+ (location (or location (allocate-memory (* size-of-type length))))
+ (writer (writer-function type)))
+ (etypecase content
+ (vector
+ (loop
+ for element across content
+ for i from 0 below length
+ as offset = 0 then (+ offset size-of-type)
+ do (funcall writer element location offset)))
+ (list
+ (loop
+ for element in content
+ for i from 0 below length
+ as offset = 0 then (+ offset size-of-type)
+ do (funcall writer element location offset))))
+ location))
+
+
+(defun map-c-vector (seqtype function location element-type length)
+ (let ((reader (reader-function element-type))
+ (size-of-element (size-of element-type)))
+ (case seqtype
+ ((nil)
+ (loop
+ for i from 0 below length
+ as offset = 0 then (+ offset size-of-element)
+ do (funcall function (funcall reader location offset))))
+ (list
+ (loop
+ for i from 0 below length
+ as offset = 0 then (+ offset size-of-element)
+ collect (funcall function (funcall reader location offset))))
+ (t
+ (loop
+ with sequence = (make-sequence seqtype length)
+ for i from 0 below length
+ as offset = 0 then (+ offset size-of-element)
+ do (setf
+ (elt sequence i)
+ (funcall function (funcall reader location offset)))
+ finally (return sequence))))))
-(deftype-method translate-type-spec vector (type-spec)
- (declare (ignore type-spec))
- (translate-type-spec 'pointer))
-(deftype-method size-of vector (type-spec)
- (declare (ignore type-spec))
+(defun destroy-c-vector (location element-type length)
+ (loop
+ with destroy = (destroy-function element-type)
+ with element-size = (size-of element-type)
+ for i from 0 below length
+ as offset = 0 then (+ offset element-size)
+ do (funcall destroy location offset))
+ (deallocate-memory location))
+
+
+(defmethod alien-type ((type (eql 'vector)) &rest args)
+ (declare (ignore type args))
+ (alien-type 'pointer))
+
+(defmethod size-of ((type (eql 'vector)) &rest args)
+ (declare (ignore type args))
(size-of 'pointer))
-(deftype-method translate-to-alien vector (type-spec vector &optional weak-ref)
- (declare (ignore weak-ref))
- (destructuring-bind (element-type &optional (length '*))
- (cdr (type-expand-to 'vector type-spec))
- (let* ((element-size (size-of element-type))
- (size (cond
- ((not (eq length '*))
- (* element-size length))
- ((not (atomic-type-p element-type))
- `(* ,element-size (1+ (length vector))))
- (t
- `(* ,element-size (length vector))))))
-
- `(let ((vector ,vector))
- (let ((c-vector (allocate-memory ,size)))
- (dotimes (i ,(if (eq length '*) '(length vector) length))
- (setf
- (,(sap-ref-fname element-type) c-vector (* i ,element-size))
- ,(translate-to-alien element-type '(aref vector i))))
- ,(when (and
- (eq length '*)
- (not (atomic-type-p element-type)))
- `(setf
- (sap-ref-sap c-vector (* (length vector) ,element-size))
- *magic-end-of-array*))
- c-vector)))))
-
-(deftype-method translate-from-alien
- vector (type-spec c-array &optional weak-ref)
- (destructuring-bind (element-type &optional (length '*))
- (cdr (type-expand-to 'vector type-spec))
- (when (eq length '*)
- (error "Can't use vectors of variable length as return type"))
- (let ((element-size (size-of element-type)))
- `(let ((c-array ,c-array)
- (vector (make-array ,length :element-type ',element-type)))
- (dotimes (i ,length)
- (setf
- (aref vector i)
- ,(translate-from-alien
- element-type
- `(,(sap-ref-fname element-type) c-array (* i ,element-size))
- weak-ref)))
- ,(unless weak-ref
- '(deallocate-memory c-vector))
- vector))))
-
-
-(deftype-method cleanup-alien vector (type-spec c-vector &optional weak-ref)
- (when weak-ref
- (unreference-alien type-spec c-vector)))
-
-(deftype-method unreference-alien vector (type-spec c-vector)
- (destructuring-bind (element-type &optional (length '*))
- (cdr (type-expand-to 'vector type-spec))
- `(let ((c-vector ,c-vector))
- (unless (null-pointer-p c-vector)
- ,(unless (atomic-type-p element-type)
- (let ((element-size (size-of element-type)))
- (if (not (eq length '*))
- `(dotimes (i ,length)
- (unreference-alien
- element-type (sap-ref-sap c-vector (* i ,element-size))))
- `(do ((offset 0 (+ offset ,element-size)))
- ((sap=
- (sap-ref-sap c-vector offset)
- *magic-end-of-array*))
- ,(unreference-alien
- element-type '(sap-ref-sap c-vector offset))))))
- (deallocate-memory c-vector)))))
-
-
-(defun map-c-array (seqtype function location element-type length)
- (let ((reader (intern-reader-function element-type))
- (size (size-of element-type)))
+(defmethod to-alien-form (vector (type (eql 'vector)) &rest args)
+ (declare (ignore type))
+ (destructuring-bind (element-type &optional (length '*)) args
+ (if (eq length '*)
+ `(let* ((vector ,vector)
+ (location (sap+
+ (allocate-memory (+ ,+size-of-int+
+ (* ,(size-of element-type)
+ (length vector))))
+ ,+size-of-int+)))
+ (make-c-vector ',element-type (length vector) vector location)
+ (setf (sap-ref-32 location ,(- +size-of-int+)) (length vector))
+ location)
+ `(make-c-vector ',element-type ,length ,vector))))
+
+(defmethod from-alien-form (c-vector (type (eql 'vector)) &rest args)
+ (declare (ignore type))
+ (destructuring-bind (element-type &optional (length '*)) args
+ (if (eq length '*)
+ (error "Can't use vector of variable size as return type")
+ `(let ((c-vector ,c-vector))
+ (prog1
+ (map-c-vector 'vector #'identity c-vector ',element-type ,length)
+ (destroy-c-vector c-vector ',element-type ,length))))))
+
+(defmethod copy-from-alien-form (c-vector (type (eql 'vector)) &rest args)
+ (declare (ignore type))
+ (destructuring-bind (element-type &optional (length '*)) args
+ (if (eq length '*)
+ (error "Can't use vector of variable size as return type")
+ `(map-c-vector 'vector #'identity ,c-vector ',element-type ',length))))
+
+(defmethod cleanup-form (location (type (eql 'vector)) &rest args)
+ (declare (ignore type))
+ (destructuring-bind (element-type &optional (length '*)) args
+ `(let* ((location ,location)
+ (length ,(if (eq length '*)
+ `(sap-ref-32 location ,(- +size-of-int+))
+ length)))
+ (loop
+ with destroy = (destroy-function ',element-type)
+ for i from 0 below length
+ as offset = 0 then (+ offset ,(size-of element-type))
+ do (funcall destroy location offset))
+ (deallocate-memory ,(if (eq length '*)
+ `(sap+ location ,(- +size-of-int+))
+ 'location)))))
+
+(defmethod writer-function ((type (eql 'vector)) &rest args)
+ (declare (ignore type))
+ (destructuring-bind (element-type &optional (length '*)) args
+ #'(lambda (vector location &optional (offset 0))
+ (setf
+ (sap-ref-sap location offset)
+ (make-c-vector element-type length vector)))))
+
+(defmethod reader-function ((type (eql 'vector)) &rest args)
+ (declare (ignore type))
+ (destructuring-bind (element-type &optional (length '*)) args
+ (if (eq length '*)
+ (error "Can't create reader function for vector of variable size")
+ #'(lambda (location &optional (offset 0))
+ (unless (null-pointer-p (sap-ref-sap location offset))
+ (map-c-vector 'vector #'identity (sap-ref-sap location offset)
+ element-type length))))))
+
+(defmethod destroy-function ((type (eql 'vector)) &rest args)
+ (declare (ignore type))
+ (destructuring-bind (element-type &optional (length '*)) args
+ (if (eq length '*)
+ (error "Can't create destroy function for vector of variable size")
+ #'(lambda (location &optional (offset 0))
+ (unless (null-pointer-p (sap-ref-sap location offset))
+ (destroy-c-vector
+ (sap-ref-sap location offset) element-type length)
+ (setf (sap-ref-sap location offset) (make-pointer 0)))))))
+
+
+;;;; Null terminated vector
+
+(defun make-0-vector (type content &optional location)
+ (let* ((size-of-type (size-of type))
+ (location (or
+ location
+ (allocate-memory (* size-of-type (1+ (length content))))))
+ (writer (writer-function type)))
+ (etypecase content
+ (vector
+ (loop
+ for element across content
+ as offset = 0 then (+ offset size-of-type)
+ do (funcall writer element location offset)
+ finally (setf (sap-ref-sap location offset) (make-pointer 0))))
+ (list
+ (loop
+ for element in content
+ as offset = 0 then (+ offset size-of-type)
+ do (funcall writer element location offset)
+ finally (setf (sap-ref-sap location (+ offset size-of-type)) (make-pointer 0)))))
+ location))
+
+
+(defun map-0-vector (seqtype function location element-type)
+ (let ((reader (reader-function element-type))
+ (size-of-element (size-of element-type)))
(case seqtype
((nil)
- (dotimes (i length)
- (funcall function (funcall reader location (* i size)))))
+ (loop
+ as offset = 0 then (+ offset size-of-element)
+ until (null-pointer-p (sap-ref-sap location offset))
+ do (funcall function (funcall reader location offset))))
(list
- (let ((list nil))
- (dotimes (i length)
- (push (funcall function (funcall reader location (* i size))) list))
- (nreverse list)))
+ (loop
+ as offset = 0 then (+ offset size-of-element)
+ until (null-pointer-p (sap-ref-sap location offset))
+ collect (funcall function (funcall reader location offset))))
(t
- (let ((sequence (make-sequence seqtype length)))
- (dotimes (i length)
- (setf
- (elt sequence i)
- (funcall function (funcall reader location (* i size)))))
- sequence)))))
+ (coerce
+ (loop
+ as offset = 0 then (+ offset size-of-element)
+ until (null-pointer-p (sap-ref-sap location offset))
+ collect (funcall function (funcall reader location offset)))
+ seqtype)))))
+
+
+(defun destroy-0-vector (location element-type)
+ (loop
+ with destroy = (destroy-function element-type)
+ with element-size = (size-of element-type)
+ as offset = 0 then (+ offset element-size)
+ until (null-pointer-p (sap-ref-sap location offset))
+ do (funcall destroy location offset))
+ (deallocate-memory location))
+
+
+(defmethod alien-type ((type (eql 'null-terminated-vector)) &rest args)
+ (declare (ignore type args))
+ (alien-type 'pointer))
+
+(defmethod size-of ((type (eql 'null-terminated-vector)) &rest args)
+ (declare (ignore type args))
+ (alien-type 'pointer))
+
+(defmethod writer-function ((type (eql 'null-terminated-vector)) &rest args)
+ (declare (ignore type))
+ (destructuring-bind (element-type) args
+ (unless (eq (alien-type element-type) (alien-type 'pointer))
+ (error "Elements in null-terminated vectors need to be of pointer types"))
+ #'(lambda (vector location &optional (offset 0))
+ (setf
+ (sap-ref-sap location offset)
+ (make-0-vector element-type vector)))))
+
+(defmethod reader-function ((type (eql 'null-terminated-vector)) &rest args)
+ (declare (ignore type))
+ (destructuring-bind (element-type) args
+ (unless (eq (alien-type element-type) (alien-type 'pointer))
+ (error "Elements in null-terminated vectors need to be of pointer types"))
+ #'(lambda (location &optional (offset 0))
+ (unless (null-pointer-p (sap-ref-sap location offset))
+ (map-0-vector 'vector #'identity (sap-ref-sap location offset)
+ element-type)))))
+
+(defmethod destroy-function ((type (eql 'null-terminated-vector)) &rest args)
+ (declare (ignore type))
+ (destructuring-bind (element-type) args
+ (unless (eq (alien-type element-type) (alien-type 'pointer))
+ (error "Elements in null-terminated vectors need to be of pointer types"))
+ #'(lambda (location &optional (offset 0))
+ (unless (null-pointer-p (sap-ref-sap location offset))
+ (destroy-0-vector
+ (sap-ref-sap location offset) element-type)
+ (setf (sap-ref-sap location offset) (make-pointer 0))))))
+
+(defmethod unbound-value ((type (eql 'null-terminated-vector)) &rest args)
+ (declare (ignore type args))
+ (values t nil))
~mdw / clg / blobdiff