Objective-C layer: Add functions for determining whether a class is managed by Lisp.

darcs-hash:2be32db4b0358556b007ad6737f689e04de1e7b3

3 files changed, 37 insertions, 0 deletions

diff --git a/Lisp/libobjcl.lisp b/Lisp/libobjcl.lisp
index 1a7e21a..8cb490b 100644
--- a/Lisp/libobjcl.lisp
+++ b/Lisp/libobjcl.lisp
@@ -156,6 +156,17 @@
 (defcfun ("objcl_finalise_class" %objcl-finalise-class) :void
   (class :pointer))
 
+(defcfun ("objcl_class_backed_by_lisp_class_p"
+          %objcl-class-backed-by-lisp-class-p)
+    :int
+  (class :pointer))
+
+(defcfun ("objcl_class_set_backed_by_lisp_class"
+          %objcl-class-set-backed-by-lisp-class)
+    :void
+  (class :pointer)
+  (backed-p :int))
+
 (defcvar *objcl-current-exception-lock* :pointer)
 (defcvar *objcl-current-exception* :pointer)
 
@@ -867,3 +878,9 @@ separating parts by hyphens works nicely in all of the `:INVERT`,
                     then (inc-pointer current-slot element-size)
                   collecting (mem-ref current-slot :pointer))
           (foreign-free array-pointer))))))
+
+(defun objcl-class-backed-by-lisp-class-p/pointer (class-ptr)
+  (not (zerop (%objcl-class-backed-by-lisp-class-p class-ptr))))
+
+(defun objcl-class-set-backed-by-lisp-class/pointer (class-ptr backed-p)
+  (%objcl-class-set-backed-by-lisp-class class-ptr (if backed-p 1 0)))
diff --git a/Objective-C/libobjcl.h b/Objective-C/libobjcl.h
index c8c6766..26dca23 100644
--- a/Objective-C/libobjcl.h
+++ b/Objective-C/libobjcl.h
@@ -187,3 +187,9 @@ objcl_add_method (Class class,
 
 void
 objcl_finalise_class (Class class);
+
+int
+objcl_class_backed_by_lisp_class_p (Class class);
+
+void
+objcl_class_set_backed_by_lisp_class (Class class, int backed_p);
diff --git a/Objective-C/libobjcl.m b/Objective-C/libobjcl.m
index e7d8148..141c069 100644
--- a/Objective-C/libobjcl.m
+++ b/Objective-C/libobjcl.m
@@ -783,3 +783,17 @@ objcl_finalise_class (Class class)
   [method_list_lengths removeObjectForKey: class_name];
 #endif
 }
+
+
+int
+objcl_class_backed_by_lisp_class_p (Class class)
+{
+  return [class __objcl_isBackedByLispClass];
+}
+
+
+void
+objcl_class_set_backed_by_lisp_class (Class class, int backed_p)
+{
+  [class __objcl_setBackedByLispClass: backed_p];
+}