X-Git-Url: https://git.distorted.org.uk/~mdw/clg/blobdiff_plain/3d285e3519b59debd944817e865a73d16af00562..c9219df21468b9fe8e171ac17b4196ca570dda7c:/glib/ffi.lisp

diff --git a/glib/ffi.lisp b/glib/ffi.lisp
index 825facb..bd68c1e 100644
--- a/glib/ffi.lisp
+++ b/glib/ffi.lisp
@@ -15,7 +15,7 @@
 ;; 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: ffi.lisp,v 1.9 2004-12-19 15:31:26 espen Exp $
+;; $Id: ffi.lisp,v 1.12 2005-01-03 16:35:05 espen Exp $
 
 (in-package "GLIB")
 
@@ -103,11 +103,11 @@
 		     (not supplied-lambda-list)
 		     (namep expr) (member style '(:in :in-out :return)))
 		(push expr lambda-list))
-	      (push
-	       (list (if (namep expr) 
-			 (make-symbol (string expr))
-		       (gensym))
-		     expr (mklist type) style) args)))))
+	      (push (list (cond 
+			   ((and (namep expr) (eq style :out)) expr)
+			   ((namep expr) (make-symbol (string expr)))
+			   ((gensym)))
+			  expr (mklist type) style) args)))))
       
       (%defbinding
        c-name lisp-name (or supplied-lambda-list (nreverse lambda-list))
@@ -250,6 +250,9 @@
 (def-type-method reader-function ())
 (def-type-method destroy-function ())
 
+(def-type-method unbound-value ()
+  "First return value is true if the type has an unbound value, second return value is the actual unbound value")
+
 
 ;; Sizes of fundamental C types in bytes (8 bits)
 (defconstant +size-of-short+ 2)
@@ -340,6 +343,10 @@
       ((* #.+bits-of-int+) +size-of-int+)
       (#.+bits-of-long+ +size-of-long+))))
 
+(defmethod unbound-value ((type t) &rest args)
+  (declare (ignore type args))
+  nil)
+
 (defmethod writer-function ((type (eql 'signed-byte)) &rest args)
   (declare (ignore type))
   (destructuring-bind (&optional (size '*)) args
@@ -371,7 +378,7 @@
 (defmethod alien-type ((type (eql 'unsigned-byte)) &rest args)
   (destructuring-bind (&optional (size '*)) args
     (ecase size
-      (#.+bits-of-byte+ '(unsigned-byte 8))
+      (#.+bits-of-byte+ '(unsigned #|-byte|# 8))
       (#.+bits-of-short+ 'c-call:unsigned-short)
       ((* #.+bits-of-int+) 'c-call:unsigned-int)
       (#.+bits-of-long+ 'c-call:unsigned-long))))
@@ -576,6 +583,9 @@
 	(deallocate-memory (sap-ref-sap location offset))
 	(setf (sap-ref-sap location offset) (make-pointer 0)))))
 
+(defmethod unbound-value ((type (eql 'string)) &rest args)
+  (declare (ignore type args))
+  (values t nil))
 
 (defmethod alien-type ((type (eql 'pathname)) &rest args)
   (declare (ignore type args))
@@ -631,6 +641,10 @@
   (declare (ignore type args))
   (destroy-function 'string))
 
+(defmethod unbound-value ((type (eql 'pathname)) &rest args)
+  (declare (ignore type args))
+  (unbound-value 'string))
+
 
 (defmethod alien-type ((type (eql 'boolean)) &rest args)
   (apply #'alien-type 'signed-byte args))