diff options
Diffstat (limited to 'Lisp/utilities.lisp')
| -rw-r--r-- | Lisp/utilities.lisp | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/Lisp/utilities.lisp b/Lisp/utilities.lisp index 710ac94..a81b61c 100644 --- a/Lisp/utilities.lisp +++ b/Lisp/utilities.lisp @@ -94,13 +94,15 @@ ;;; (@* "Object Representation") (defmethod print-object ((object id) stream) - (print-unreadable-object (object stream) - (with-slots (pointer) object - (format stream "~A `~A' {~X}" - (objcl-class-name (primitive-invoke object "class" 'id)) - (primitive-invoke (primitive-invoke object "description" 'id) - "UTF8String" :string) - (cffi:pointer-address pointer))))) + (with-slots (pointer) object + (if (cffi:pointer-eq pointer (pointer-to +nil+)) + (format stream "#.~S" '+nil+) + (print-unreadable-object (object stream) + (format stream "~A `~A' {~X}" + (objcl-class-name (primitive-invoke object "class" 'id)) + (primitive-invoke (primitive-invoke object "description" 'id) + "UTF8String" :string) + (cffi:pointer-address pointer)))))) (defmethod print-object ((class objc-class) stream) |