(defmethod initialize-internal-slot-functions ((slotd
effective-slot-definition))
(let* ((name (slot-value slotd 'name))
- (class (slot-value slotd 'class)))
- (let ((table (or (gethash name *name->class->slotd-table*)
- (setf (gethash name *name->class->slotd-table*)
- (make-hash-table :test 'eq :size 5)))))
- (setf (gethash class table) slotd))
+ (class (slot-value slotd '%class)))
(dolist (type '(reader writer boundp))
(let* ((gf-name (ecase type
(reader 'slot-value-using-class)
(writer '(setf slot-value-using-class))
(boundp 'slot-boundp-using-class)))
(gf (gdefinition gf-name)))
- (compute-slot-accessor-info slotd type gf)))
- (initialize-internal-slot-gfs name)))
+ (compute-slot-accessor-info slotd type gf)))))
;;; CMUCL (Gerd PCL 2003-04-25) comment:
;;;
(defmethod compute-slot-accessor-info ((slotd effective-slot-definition)
type gf)
(let* ((name (slot-value slotd 'name))
- (class (slot-value slotd 'class))
+ (class (slot-value slotd '%class))
(old-slotd (find-slot-definition class name))
(old-std-p (and old-slotd (slot-accessor-std-p old-slotd 'all))))
(multiple-value-bind (function std-p)
slot-names
&key)
(declare (ignore slot-names))
- (setf (slot-value specl 'type) `(class-eq ,(specializer-class specl))))
+ (setf (slot-value specl '%type) `(class-eq ,(specializer-class specl))))
(defmethod shared-initialize :after ((specl eql-specializer) slot-names &key)
(declare (ignore slot-names))
- (setf (slot-value specl 'type)
+ (setf (slot-value specl '%type)
`(eql ,(specializer-object specl)))
(setf (info :type :translator specl)
(constantly (make-member-type :members (list (specializer-object specl))))))
(defun real-load-defclass (name metaclass-name supers slots other
- readers writers slot-names)
+ readers writers slot-names source-location)
(with-single-package-locked-error (:symbol name "defining ~S as a class")
(%compiler-defclass name readers writers slot-names)
(let ((res (apply #'ensure-class name :metaclass metaclass-name
:direct-superclasses supers
:direct-slots slots
- :definition-source `((defclass ,name)
- ,*load-pathname*)
+ :definition-source source-location
other)))
res)))
(defmethod ensure-class-using-class ((class null) name &rest args &key)
(multiple-value-bind (meta initargs)
(ensure-class-values class args)
- (set-class-type-translation (class-prototype meta) name)
(setf class (apply #'make-instance meta :name name initargs))
(without-package-locks
(setf (find-class name) class))
(set-class-type-translation class name)
class))
-(defmethod class-predicate-name ((class t))
- 'constantly-nil)
-
(defun fix-super (s)
(cond ((classp s) s)
((not (legal-class-name-p s))
(error "~S is not a class or a legal class name." s))
(t
(or (find-class s nil)
- (make-instance 'forward-referenced-class
- :name s)))))
+ (ensure-class s :metaclass 'forward-referenced-class)))))
(defun ensure-class-values (class initargs)
(let (metaclass metaclassp reversed-plist)
\f
(defmethod shared-initialize :after
- ((class std-class)
- slot-names
- &key (direct-superclasses nil direct-superclasses-p)
- (direct-slots nil direct-slots-p)
- (direct-default-initargs nil direct-default-initargs-p)
- (predicate-name nil predicate-name-p))
+ ((class std-class) slot-names &key
+ (direct-superclasses nil direct-superclasses-p)
+ (direct-slots nil direct-slots-p)
+ (direct-default-initargs nil direct-default-initargs-p))
(cond (direct-superclasses-p
(setq direct-superclasses
(or direct-superclasses
(push (cons name value) collect))
(push old collect)))))
(nreverse collect)))
- (setq predicate-name (if predicate-name-p
- (setf (slot-value class 'predicate-name)
- (car predicate-name))
- (or (slot-value class 'predicate-name)
- (setf (slot-value class 'predicate-name)
- (make-class-predicate-name (class-name
- class))))))
(add-direct-subclasses class direct-superclasses)
- (make-class-predicate class predicate-name)
- (update-class class nil)
- (do* ((slots (slot-value class 'slots) (cdr slots))
- (dupes nil))
- ((null slots) (when dupes
- (style-warn
- ;; FIXME: the indentation request ("~4I")
- ;; below appears not to do anything. Finding
- ;; out why would be nice. -- CSR, 2003-04-24
- "~@<slot names with the same SYMBOL-NAME but ~
- different SYMBOL-PACKAGE (possible package problem) ~
- for class ~S:~@:_~4I~<~@{~S~^~:@_~}~:>~@:>"
- class
- dupes)))
- (let* ((slot (car slots))
- (oslots (remove (slot-definition-name slot) (cdr slots)
- :test #'string/= :key #'slot-definition-name)))
- (when oslots
- (pushnew (cons (slot-definition-name slot)
- (mapcar #'slot-definition-name oslots))
- dupes
- :test #'string= :key #'car))))
+ (if (class-finalized-p class)
+ ;; required by AMOP, "Reinitialization of Class Metaobjects"
+ (finalize-inheritance class)
+ (update-class class nil))
(add-slot-accessors class direct-slots)
(make-preliminary-layout class))
(without-package-locks
(unless (class-finalized-p class)
(let ((name (class-name class)))
- (setf (find-class name) class)
;; KLUDGE: This is fairly horrible. We need to make a
;; full-fledged CLASSOID here, not just tell the compiler that
;; some class is forthcoming, because there are legitimate
;; questions one can ask of the type system, implemented in
;; terms of CLASSOIDs, involving forward-referenced classes. So.
- (when (and (eq *boot-state* 'complete)
- (null (find-classoid name nil)))
- (setf (find-classoid name)
- (make-standard-classoid :name name)))
- (set-class-type-translation class name)
- (let ((layout (make-wrapper 0 class))
- (classoid (find-classoid name)))
- (setf (layout-classoid layout) classoid)
- (setf (classoid-pcl-class classoid) class)
+ (let ((layout (make-wrapper 0 class)))
(setf (slot-value class 'wrapper) layout)
(let ((cpl (compute-preliminary-cpl class)))
(setf (layout-inherits layout)
(map 'simple-vector #'class-wrapper
(reverse (rest cpl))))))
(register-layout layout :invalidate t)
- (setf (classoid-layout classoid) layout)
- (mapc #'make-preliminary-layout (class-direct-subclasses class))))))))
+ (set-class-type-translation class (layout-classoid layout)))))
+ (mapc #'make-preliminary-layout (class-direct-subclasses class)))))
(defmethod shared-initialize :before ((class class) slot-names &key name)
(declare (ignore slot-names name))
;; FIXME: Could this just be CLASS instead of `(CLASS ,CLASS)? If not,
;; why not? (See also similar expression in !BOOTSTRAP-INITIALIZE-CLASS.)
- (setf (slot-value class 'type) `(class ,class))
+ (setf (slot-value class '%type) `(class ,class))
(setf (slot-value class 'class-eq-specializer)
(make-instance 'class-eq-specializer :class class)))
(lambda (dependent)
(apply #'update-dependent class dependent initargs))))
+(defmethod reinitialize-instance :after ((class condition-class) &key)
+ (let* ((name (class-name class))
+ (classoid (find-classoid name))
+ (slots (condition-classoid-slots classoid)))
+ ;; to balance the REMOVE-SLOT-ACCESSORS call in
+ ;; REINITIALIZE-INSTANCE :BEFORE (SLOT-CLASS).
+ (dolist (slot slots)
+ (let ((slot-name (condition-slot-name slot)))
+ (dolist (reader (condition-slot-readers slot))
+ ;; FIXME: see comment in SHARED-INITIALIZE :AFTER
+ ;; (CONDITION-CLASS T), below. -- CSR, 2005-11-18
+ (sb-kernel::install-condition-slot-reader reader name slot-name))
+ (dolist (writer (condition-slot-writers slot))
+ (sb-kernel::install-condition-slot-writer writer name slot-name))))))
+
(defmethod shared-initialize :after ((class condition-class) slot-names
&key direct-slots direct-superclasses)
(declare (ignore slot-names))
(let ((classoid (find-classoid (class-name class))))
- (with-slots (wrapper class-precedence-list cpl-available-p
- prototype predicate-name
- (direct-supers direct-superclasses))
+ (with-slots (wrapper %class-precedence-list cpl-available-p
+ prototype (direct-supers direct-superclasses))
class
(setf (slot-value class 'direct-slots)
(mapcar (lambda (pl) (make-direct-slotd class pl))
(setf (classoid-pcl-class classoid) class)
(setq direct-supers direct-superclasses)
(setq wrapper (classoid-layout classoid))
- (setq class-precedence-list (compute-class-precedence-list class))
+ (setq %class-precedence-list (compute-class-precedence-list class))
(setq cpl-available-p t)
(add-direct-subclasses class direct-superclasses)
- (setq predicate-name (make-class-predicate-name (class-name class)))
- (make-class-predicate class predicate-name)
(setf (slot-value class 'slots) (compute-slots class))))
;; Comment from Gerd's PCL, 2003-05-15:
;;
;; We don't ADD-SLOT-ACCESSORS here because we don't want to
;; override condition accessors with generic functions. We do this
;; differently.
+ ;;
+ ;; ??? What does the above comment mean and why is it a good idea?
+ ;; CMUCL (which still as of 2005-11-18 uses this code and has this
+ ;; comment) loses slot information in its condition classes:
+ ;; DIRECT-SLOTS is always NIL. We have the right information, so we
+ ;; remove slot accessors but never put them back. I've added a
+ ;; REINITIALIZE-INSTANCE :AFTER (CONDITION-CLASS) method, but what
+ ;; was meant to happen? -- CSR, 2005-11-18
(update-pv-table-cache-info class))
(defmethod direct-slot-definition-class ((class condition-class)
(compute-effective-slot-definition
class (slot-definition-name dslotd) (list dslotd)))
(class-direct-slots superclass)))
- (reverse (slot-value class 'class-precedence-list))))
+ (reverse (slot-value class '%class-precedence-list))))
(defmethod compute-slots :around ((class condition-class))
(let ((eslotds (call-next-method)))
(sb-kernel::compiler-layout-or-lose (dd-name dd))))))
(defmethod shared-initialize :after
- ((class structure-class)
- slot-names
- &key (direct-superclasses nil direct-superclasses-p)
+ ((class structure-class) slot-names &key
+ (direct-superclasses nil direct-superclasses-p)
(direct-slots nil direct-slots-p)
- direct-default-initargs
- (predicate-name nil predicate-name-p))
+ direct-default-initargs)
(declare (ignore slot-names direct-default-initargs))
(if direct-superclasses-p
(setf (slot-value class 'direct-superclasses)
(unless (structure-type-p name) (eval defstruct-form))
(mapc (lambda (dslotd reader-name writer-name)
(let* ((reader (gdefinition reader-name))
- (writer (when (gboundp writer-name)
+ (writer (when (fboundp writer-name)
(gdefinition writer-name))))
(setf (slot-value dslotd 'internal-reader-function)
reader)
(setf (slot-value class 'defstruct-constructor)
(make-defstruct-allocation-function class)))
(add-direct-subclasses class direct-superclasses)
- (setf (slot-value class 'class-precedence-list)
+ (setf (slot-value class '%class-precedence-list)
(compute-class-precedence-list class))
(setf (slot-value class 'cpl-available-p) t)
(setf (slot-value class 'slots) (compute-slots class))
(setf (slot-value class 'wrapper) (classoid-layout lclass)))
(setf (slot-value class 'finalized-p) t)
(update-pv-table-cache-info class)
- (setq predicate-name (if predicate-name-p
- (setf (slot-value class 'predicate-name)
- (car predicate-name))
- (or (slot-value class 'predicate-name)
- (setf (slot-value class 'predicate-name)
- (make-class-predicate-name
- (class-name class))))))
- (make-class-predicate class predicate-name)
(add-slot-accessors class direct-slots)))
(defmethod direct-slot-definition-class ((class structure-class) &rest initargs)
;;; This is called by :after shared-initialize whenever a class is initialized
;;; or reinitialized. The class may or may not be finalized.
(defun update-class (class finalizep)
- ;; Comment from Gerd Moellmann:
- ;;
- ;; Note that we can't simply delay the finalization when CLASS has
- ;; no forward referenced superclasses because that causes bootstrap
- ;; problems.
(without-package-locks
- (when (and (not finalizep)
- (not (class-finalized-p class))
- (not (class-has-a-forward-referenced-superclass-p class)))
- (finalize-inheritance class)
- (return-from update-class))
- (when (or finalizep (class-finalized-p class)
- (not (class-has-a-forward-referenced-superclass-p class)))
- (setf (find-class (class-name class)) class)
+ (when (or finalizep (class-finalized-p class))
(update-cpl class (compute-class-precedence-list class))
;; This invocation of UPDATE-SLOTS, in practice, finalizes the
- ;; class. The hoops above are to ensure that FINALIZE-INHERITANCE
- ;; is called at finalization, so that MOP programmers can hook
- ;; into the system as described in "Class Finalization Protocol"
- ;; (section 5.5.2 of AMOP).
+ ;; class.
(update-slots class (compute-slots class))
(update-gfs-of-class class)
(update-initargs class (compute-default-initargs class))
(update-ctors 'finalize-inheritance :class class))
- (unless finalizep
- (dolist (sub (class-direct-subclasses class))
- (update-class sub nil)))))
+ (dolist (sub (class-direct-subclasses class))
+ (update-class sub nil))))
(define-condition cpl-protocol-violation (reference-condition error)
((class :initarg :class :reader cpl-protocol-violation-class)
;; comment from the old CMU CL sources:
;; Need to have the cpl setup before update-lisp-class-layout
;; is called on CMU CL.
- (setf (slot-value class 'class-precedence-list) cpl)
+ (setf (slot-value class '%class-precedence-list) cpl)
(setf (slot-value class 'cpl-available-p) t)
(force-cache-flushes class))
(progn
- (setf (slot-value class 'class-precedence-list) cpl)
+ (setf (slot-value class '%class-precedence-list) cpl)
(setf (slot-value class 'cpl-available-p) t)))
(update-class-can-precede-p cpl))
(wrapper-instance-slots-layout nwrapper) nlayout
(wrapper-class-slots nwrapper) nwrapper-class-slots
(wrapper-no-of-instance-slots nwrapper) nslots
- wrapper nwrapper))
+ wrapper nwrapper)
+ (do* ((slots (slot-value class 'slots) (cdr slots))
+ (dupes nil))
+ ((null slots)
+ (when dupes
+ (style-warn
+ "~@<slot names with the same SYMBOL-NAME but ~
+ different SYMBOL-PACKAGE (possible package problem) ~
+ for class ~S:~4I~@:_~<~@{~S~^~:@_~}~:>~@:>"
+ class dupes)))
+ (let* ((slot (car slots))
+ (oslots (remove (slot-definition-name slot) (cdr slots)
+ :test #'string/=
+ :key #'slot-definition-name)))
+ (when oslots
+ (pushnew (cons (slot-definition-name slot)
+ (mapcar #'slot-definition-name oslots))
+ dupes
+ :test #'string= :key #'car)))))
(setf (slot-value class 'finalized-p) t)
(unless (eq owrapper nwrapper)
(update-pv-table-cache-info class)
(defun compute-class-slots (eslotds)
(let (collect)
- (dolist (eslotd eslotds)
- (push (assoc (slot-definition-name eslotd)
- (class-slot-cells (slot-definition-class eslotd)))
- collect))
- (nreverse collect)))
+ (dolist (eslotd eslotds (nreverse collect))
+ (let ((cell (assoc (slot-definition-name eslotd)
+ (class-slot-cells
+ (slot-definition-allocation-class eslotd)))))
+ (aver cell)
+ (push cell collect)))))
(defun update-gfs-of-class (class)
(when (and (class-finalized-p class)
;;; the slots predictably, but maybe it would be good to compute some
;;; kind of optimal slot layout by looking at locations of slots in
;;; superclasses?
-(defmethod compute-slots ((class std-class))
+(defun std-compute-slots (class)
;; As specified, we must call COMPUTE-EFFECTIVE-SLOT-DEFINITION once
;; for each different slot name we find in our superclasses. Each
;; call receives the class and a list of the dslotds with that name.
(nreverse name-dslotds-alist))))
(defmethod compute-slots ((class standard-class))
- (call-next-method))
+ (std-compute-slots class))
+(defmethod compute-slots ((class funcallable-standard-class))
+ (std-compute-slots class))
-(defmethod compute-slots :around ((class standard-class))
- (let ((eslotds (call-next-method))
- (location -1))
+(defun std-compute-slots-around (class eslotds)
+ (let ((location -1))
(dolist (eslotd eslotds eslotds)
(setf (slot-definition-location eslotd)
(case (slot-definition-allocation eslotd)
;; do if we find that said user has added a slot
;; with the same name as another slot...
(cell (or (assq name (class-slot-cells from-class))
- (setf (class-slot-cells from-class)
- (cons (cons name +slot-unbound+)
- (class-slot-cells from-class))))))
+ (let ((c (cons name +slot-unbound+)))
+ (push c (class-slot-cells from-class))
+ c))))
(aver (consp cell))
(if (eq +slot-unbound+ (cdr cell))
;; We may have inherited an initfunction
(setf (slot-definition-class eslotd) class))
(initialize-internal-slot-functions eslotd))))
-(defmethod compute-slots ((class funcallable-standard-class))
- (call-next-method))
-
+(defmethod compute-slots :around ((class standard-class))
+ (let ((eslotds (call-next-method)))
+ (std-compute-slots-around class eslotds)))
(defmethod compute-slots :around ((class funcallable-standard-class))
- (labels ((instance-slot-names (slotds)
- (let (collect)
- (dolist (slotd slotds (nreverse collect))
- (when (eq (slot-definition-allocation slotd) :instance)
- (push (slot-definition-name slotd) collect)))))
- ;; This sorts slots so that slots of classes later in the CPL
- ;; come before slots of other classes. This is crucial for
- ;; funcallable instances because it ensures that the slots of
- ;; FUNCALLABLE-STANDARD-OBJECT, which includes the slots of
- ;; KERNEL:FUNCALLABLE-INSTANCE, come first, which in turn
- ;; makes it possible to treat FUNCALLABLE-STANDARD-OBJECT as
- ;; a funcallable instance.
- (compute-layout (eslotds)
- (let ((first ())
- (names (instance-slot-names eslotds)))
- (dolist (class
- (reverse (class-precedence-list class))
- (nreverse (nconc names first)))
- (dolist (ss (class-slots class))
- (let ((name (slot-definition-name ss)))
- (when (member name names)
- (push name first)
- (setq names (delete name names)))))))))
- (let ((all-slotds (call-next-method))
- (instance-slots ())
- (class-slots ()))
- (dolist (slotd all-slotds)
- (case (slot-definition-allocation slotd)
- (:instance (push slotd instance-slots))
- (:class (push slotd class-slots))))
- (let ((layout (compute-layout instance-slots)))
- (dolist (slotd instance-slots)
- (setf (slot-definition-location slotd)
- (position (slot-definition-name slotd) layout))
- (initialize-internal-slot-functions slotd)))
- (dolist (slotd class-slots)
- (let ((name (slot-definition-name slotd))
- (from-class (slot-definition-allocation-class slotd)))
- (setf (slot-definition-location slotd)
- (assoc name (class-slot-cells from-class)))
- (aver (consp (slot-definition-location slotd)))
- (initialize-internal-slot-functions slotd)))
- all-slotds)))
+ (let ((eslotds (call-next-method)))
+ (std-compute-slots-around class eslotds)))
(defmethod compute-slots ((class structure-class))
(mapcan (lambda (superclass)
(slot-definition-name dslotd)
(list dslotd)))
(class-direct-slots superclass)))
- (reverse (slot-value class 'class-precedence-list))))
+ (reverse (slot-value class '%class-precedence-list))))
(defmethod compute-slots :around ((class structure-class))
(let ((eslotds (call-next-method)))
(allocation nil)
(allocation-class nil)
(type t)
+ (documentation nil)
+ (documentationp nil)
(namep nil)
(initp nil)
(allocp nil))
(setq initform (slot-definition-initform slotd)
initfunction (slot-definition-initfunction slotd)
initp t)))
+ (unless documentationp
+ (when (%slot-definition-documentation slotd)
+ (setq documentation (%slot-definition-documentation slotd)
+ documentationp t)))
(unless allocp
(setq allocation (slot-definition-allocation slotd)
allocation-class (slot-definition-class slotd)
allocp t))
(setq initargs (append (slot-definition-initargs slotd) initargs))
(let ((slotd-type (slot-definition-type slotd)))
- (setq type (cond ((eq type t) slotd-type)
- ((*subtypep type slotd-type) type)
- (t `(and ,type ,slotd-type)))))))
+ (setq type (cond
+ ((eq type t) slotd-type)
+ ;; This pairwise type intersection is perhaps a
+ ;; little inefficient and inelegant, but it's
+ ;; unlikely to lie on the critical path. Shout
+ ;; if I'm wrong. -- CSR, 2005-11-24
+ (t (type-specifier
+ (specifier-type `(and ,type ,slotd-type)))))))))
(list :name name
:initform initform
:initfunction initfunction
:allocation allocation
:allocation-class allocation-class
:type type
- :class class)))
+ :class class
+ :documentation documentation)))
(defmethod compute-effective-slot-definition-initargs :around
((class structure-class) direct-slotds)
(let* ((owrapper (class-wrapper class))
(nwrapper (make-wrapper (wrapper-no-of-instance-slots owrapper)
class)))
- (setf (wrapper-instance-slots-layout nwrapper)
- (wrapper-instance-slots-layout owrapper))
- (setf (wrapper-class-slots nwrapper)
- (wrapper-class-slots owrapper))
- (with-pcl-lock
+ (unless (class-finalized-p class)
+ (if (class-has-a-forward-referenced-superclass-p class)
+ (return-from make-instances-obsolete class)
+ (update-cpl class (compute-class-precedence-list class))))
+ (setf (wrapper-instance-slots-layout nwrapper)
+ (wrapper-instance-slots-layout owrapper))
+ (setf (wrapper-class-slots nwrapper)
+ (wrapper-class-slots owrapper))
+ (with-pcl-lock
(update-lisp-class-layout class nwrapper)
- (setf (slot-value class 'wrapper) nwrapper)
- (invalidate-wrapper owrapper :obsolete nwrapper)
- class)))
+ (setf (slot-value class 'wrapper) nwrapper)
+ (invalidate-wrapper owrapper :obsolete nwrapper)
+ class)))
(defmethod make-instances-obsolete ((class symbol))
(make-instances-obsolete (find-class class))
;; -- --> local add slot
;; -- --> shared --
- ;; Collect class slots from inherited wrappers. Needed for
- ;; shared -> local transfers of inherited slots.
- (let ((inherited (layout-inherits owrapper)))
- (loop for i from (1- (length inherited)) downto 0
- for layout = (aref inherited i)
- when (typep layout 'wrapper)
- do (dolist (slot (wrapper-class-slots layout))
- (pushnew slot oclass-slots :key #'car))))
-
;; Go through all the old local slots.
(let ((opos 0))
(dolist (name olayout)
(apply #'update-instance-for-different-class copy instance initargs)
instance))
-(defmethod change-class ((instance standard-object)
- (new-class standard-class)
+(defmethod change-class ((instance standard-object) (new-class standard-class)
&rest initargs)
+ (unless (class-finalized-p new-class)
+ (finalize-inheritance new-class))
+ (let ((cpl (class-precedence-list new-class)))
+ (dolist (class cpl)
+ (macrolet
+ ((frob (class-name)
+ `(when (eq class (find-class ',class-name))
+ (error 'metaobject-initialization-violation
+ :format-control "~@<Cannot ~S objects into ~S metaobjects.~@:>"
+ :format-arguments (list 'change-class ',class-name)
+ :references (list '(:amop :initialization ,class-name))))))
+ (frob class)
+ (frob generic-function)
+ (frob method)
+ (frob slot-definition))))
+ (change-class-internal instance new-class initargs))
+
+(defmethod change-class ((instance forward-referenced-class)
+ (new-class standard-class) &rest initargs)
+ (let ((cpl (class-precedence-list new-class)))
+ (dolist (class cpl
+ (error 'metaobject-initialization-violation
+ :format-control
+ "~@<Cannot ~S ~S objects into non-~S objects.~@:>"
+ :format-arguments
+ (list 'change-class 'forward-referenced-class 'class)
+ :references
+ (list '(:amop :generic-function ensure-class-using-class)
+ '(:amop :initialization class))))
+ (when (eq class (find-class 'class))
+ (return nil))))
(change-class-internal instance new-class initargs))
(defmethod change-class ((instance funcallable-standard-object)
(new-class funcallable-standard-class)
&rest initargs)
+ (let ((cpl (class-precedence-list new-class)))
+ (dolist (class cpl)
+ (macrolet
+ ((frob (class-name)
+ `(when (eq class (find-class ',class-name))
+ (error 'metaobject-initialization-violation
+ :format-control "~@<Cannot ~S objects into ~S metaobjects.~@:>"
+ :format-arguments (list 'change-class ',class-name)
+ :references (list '(:amop :initialization ,class-name))))))
+ (frob class)
+ (frob generic-function)
+ (frob method)
+ (frob slot-definition))))
(change-class-internal instance new-class initargs))
(defmethod change-class ((instance standard-object)
;;;; But, there are other parts of the protocol we must follow and those
;;;; definitions appear here.
-(defmethod shared-initialize :before
- ((class built-in-class) slot-names &rest initargs)
- (declare (ignore slot-names initargs))
- (error "attempt to initialize or reinitialize a built in class"))
-
-(defmethod class-direct-slots ((class built-in-class)) ())
-(defmethod class-slots ((class built-in-class)) ())
-(defmethod class-direct-default-initargs ((class built-in-class)) ())
-(defmethod class-default-initargs ((class built-in-class)) ())
+(macrolet ((def (name args control)
+ `(defmethod ,name ,args
+ (declare (ignore initargs))
+ (error 'metaobject-initialization-violation
+ :format-control ,(format nil "~@<~A~@:>" control)
+ :format-arguments (list ',name)
+ :references (list '(:amop :initialization "Class"))))))
+ (def initialize-instance ((class built-in-class) &rest initargs)
+ "Cannot ~S an instance of BUILT-IN-CLASS.")
+ (def reinitialize-instance ((class built-in-class) &rest initargs)
+ "Cannot ~S an instance of BUILT-IN-CLASS."))
+
+(macrolet ((def (name)
+ `(defmethod ,name ((class built-in-class)) nil)))
+ (def class-direct-slots)
+ (def class-slots)
+ (def class-direct-default-initargs)
+ (def class-default-initargs))
(defmethod validate-superclass ((c class) (s built-in-class))
(or (eq s *the-class-t*) (eq s *the-class-stream*)
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