X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~mdw/git/clg/blobdiff_plain/d4b21b082be225e0c0edaa822bd8b1e267e2f87a..dfa4f31424800fdb6fb63514121b9cc893269276:/glib/gboxed.lisp

diff --git a/glib/gboxed.lisp b/glib/gboxed.lisp
index 48433cc..1bb152b 100644
--- a/glib/gboxed.lisp
+++ b/glib/gboxed.lisp
@@ -15,56 +15,100 @@
 ;; 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: gboxed.lisp,v 1.3 2001-05-11 16:04:33 espen Exp $
+;; $Id: gboxed.lisp,v 1.17 2005-03-06 17:26:23 espen Exp $
 
 (in-package "GLIB")
 
 
-(eval-when (:compile-toplevel :load-toplevel :execute)
-  (defclass boxed (proxy)
-    ()
-    (:metaclass proxy-class)
-    (:copy %boxed-copy)
-    (:free %boxed-free)))
-
-(defbinding %boxed-copy (type location) pointer
-  ((find-type-number type) type-number)
-  (location pointer))
+(defclass boxed (struct)
+  ()
+  (:metaclass struct-class))
 
-(defbinding %boxed-free (type location) nil
-  ((find-type-number type) type-number)
-  (location pointer))
+(defmethod instance-finalizer ((instance boxed))
+  (let ((location (proxy-location instance))
+	(type-number (type-number-of instance)))
+    #'(lambda ()
+	(remove-cached-instance location)
+	(%boxed-free type-number location))))
 
 
 ;;;; Metaclass for boxed classes
 
 (eval-when (:compile-toplevel :load-toplevel :execute)
-  (defclass boxed-class (proxy-class)))
+  (defclass boxed-class (struct-class)
+    ())
+
+  (defmethod validate-superclass ((class boxed-class) (super standard-class))
+    (subtypep (class-name super) 'boxed)))
 
 
-(defmethod shared-initialize ((class boxed-class) names
-			      &rest initargs &key name alien-name)
-  (declare (ignore initargs names))
+(defmethod shared-initialize ((class boxed-class) names &key name gtype)
+  (declare (ignore names))
   (call-next-method)
+  (let ((class-name (or name (class-name class))))
+    (unless (find-type-number class-name)
+      (register-type class-name 
+       (or (first gtype) (default-type-init-name class-name))))))
 
-  (let* ((class-name (or name (class-name class)))
-	 (type-number
-	  (find-type-number
-	   (or (first alien-name) (default-alien-type-name class-name)))))
-    (register-type class-name type-number)))
+(defbinding %boxed-copy () pointer
+  (type-number type-number)
+  (location pointer))
+
+(defbinding %boxed-free () nil
+  (type-number type-number)
+  (location pointer))
 
+(defmethod reference-foreign ((class boxed-class) location)
+  (%boxed-copy (find-type-number class) location))
 
-(defmethod validate-superclass
-    ((class boxed-class) (super pcl::standard-class))
-  (subtypep (class-name super) 'boxed))
+(defmethod unreference-foreign ((class boxed-class) location)
+  (%boxed-free (find-type-number class) location))
 
 
 ;;;; 
 
-(defun expand-boxed-type (type-number &optional slots)
+(defun expand-boxed-type (type-number forward-p slots)
   `(defclass ,(type-from-number type-number) (boxed)
-     ,slots
+     ,(unless forward-p
+	slots)
      (:metaclass boxed-class)
-     (:alien-name ,(find-type-name type-number))))
+     (:gtype ,(find-type-init-function type-number))))
+
+(register-derivable-type 'boxed "GBoxed" 'expand-boxed-type)
+
+;;;; Special boxed types
+
+;; (defclass gstring (boxed)
+;;   ()
+;;   (:metaclass boxed-class)
+;;   (:alien-name "GString"))
+
+;; (deftype-method translate-from-alien
+;;     gstring (type-spec location &optional weak-ref)
+;;   `(let ((location ,location))
+;;      (unless (null-pointer-p location)
+;;        (prog1
+;; 	   (c-call::%naturalize-c-string location)
+;; 	 ,(unless weak-ref
+;; 	    (unreference-alien type-spec location))))))
+
+;; (deftype-method translate-to-alien
+;;     gstring (type-spec string &optional weak-ref)
+;;   (declare (ignore weak-ref))
+;;   `(let ((string ,string))
+;;      ;; Always copy strings to prevent seg fault due to GC
+;;      (funcall
+;;       ',(proxy-class-copy (find-class type-spec))
+;;       ',type-spec
+;;       (make-pointer (1+ (kernel:get-lisp-obj-address string))))))
+
+;; (deftype-method cleanup-alien gstring (type-spec c-string &optional weak-ref)
+;;   (when weak-ref
+;;     (unreference-alien type-spec c-string)))
+
+
+
+;;;; NULL terminated vector of strings
 
-(register-derivable-type 'boxed "GBoxed" :expand 'expand-boxed-type)
+(deftype strings () '(null-terminated-vector string))
+(register-type 'strings '|g_strv_get_type|)