X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fpcl%2Fstd-class.lisp;h=a602fe715eb83cf257aeafa8d35c6511417fb71d;hb=a682f4c392bc874a6a898632889319ebdd8821fc;hp=9952a16d9d35c26b523746d4d80311bf913d1a3a;hpb=1831934a29eb9361472e4f49efbcd5398392a6b0;p=sbcl.git diff --git a/src/pcl/std-class.lisp b/src/pcl/std-class.lisp index 9952a16..a602fe7 100644 --- a/src/pcl/std-class.lisp +++ b/src/pcl/std-class.lisp @@ -72,19 +72,14 @@ (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: ;;; @@ -103,7 +98,7 @@ (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) @@ -281,23 +276,24 @@ 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 source-location) + readers writers slot-names source-location safe-p) (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 source-location + 'safe-p safe-p other))) res))) @@ -314,8 +310,7 @@ (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) + (frob-ensure-class-args args) (setf class (apply #'make-instance meta :name name initargs)) (without-package-locks (setf (find-class name) class)) @@ -324,7 +319,7 @@ (defmethod ensure-class-using-class ((class pcl-class) name &rest args &key) (multiple-value-bind (meta initargs) - (ensure-class-values class args) + (frob-ensure-class-args args) (unless (eq (class-of class) meta) (apply #'change-class class meta initargs)) (apply #'reinitialize-instance class initargs) @@ -333,46 +328,35 @@ (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))))) - -(defun ensure-class-values (class initargs) +(defun frob-ensure-class-args (args) (let (metaclass metaclassp reversed-plist) - (doplist (key val) initargs - (cond ((eq key :metaclass) - (setf metaclass val - metaclassp key)) - (t - (when (eq key :direct-superclasses) - (setf val (mapcar #'fix-super val))) - (setf reversed-plist (list* val key reversed-plist))))) - (values (cond (metaclassp - (if (classp metaclass) - metaclass - (find-class metaclass))) - ((or (null class) (forward-referenced-class-p class)) - *the-class-standard-class*) - (t - (class-of class))) - (nreverse reversed-plist)))) - + (flet ((frob-superclass (s) + (cond + ((classp s) s) + ((legal-class-name-p s) + (or (find-class s nil) + (ensure-class s :metaclass 'forward-referenced-class))) + (t (error "Not a class or a legal class name: ~S." s))))) + (doplist (key val) args + (cond ((eq key :metaclass) + (unless metaclassp + (setf metaclass val metaclassp key))) + (t + (when (eq key :direct-superclasses) + (setf val (mapcar #'frob-superclass val))) + (setf reversed-plist (list* val key reversed-plist))))) + (values (cond (metaclassp + (if (classp metaclass) + metaclass + (find-class metaclass))) + (t *the-class-standard-class*)) + (nreverse reversed-plist))))) (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 @@ -419,36 +403,11 @@ (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 - "~@~@:>" - 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)) @@ -468,21 +427,12 @@ (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) @@ -490,15 +440,15 @@ (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))) @@ -514,13 +464,27 @@ (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)) @@ -529,17 +493,23 @@ (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) @@ -583,7 +553,7 @@ (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))) @@ -653,12 +623,10 @@ (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) @@ -704,7 +672,7 @@ (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)) @@ -713,14 +681,6 @@ (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) @@ -739,17 +699,13 @@ (defun fix-slot-accessors (class dslotds add/remove) (flet ((fix (gfspec name r/w) (let ((gf (cond ((eq add/remove 'add) - (if (fboundp gfspec) - (without-package-locks - (ensure-generic-function gfspec)) + (or (find-generic-function gfspec nil) (ensure-generic-function gfspec :lambda-list (case r/w (r '(object)) (w '(new-value object)))))) - ((generic-function-p (and (fboundp gfspec) - (fdefinition gfspec))) - (without-package-locks - (ensure-generic-function gfspec)))))) + (t + (find-generic-function gfspec nil))))) (when gf (case r/w (r (if (eq add/remove 'add) @@ -792,33 +748,17 @@ ;;; 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) - (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). - (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))))) + (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. + (update-slots class (compute-slots class)) + (update-gfs-of-class class) + (update-initargs class (compute-default-initargs class)) + (update-ctors 'finalize-inheritance :class class)) + (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) @@ -852,11 +792,11 @@ ;; 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)) @@ -915,7 +855,25 @@ (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 + "~@~@:>" + 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) @@ -923,11 +881,12 @@ (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) @@ -1018,9 +977,9 @@ ;; 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 @@ -1048,7 +1007,7 @@ (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))) @@ -1078,6 +1037,7 @@ (allocation nil) (allocation-class nil) (type t) + (type-check-function nil) (documentation nil) (documentationp nil) (namep nil) @@ -1103,10 +1063,24 @@ allocation-class (slot-definition-class slotd) allocp t)) (setq initargs (append (slot-definition-initargs slotd) initargs)) + (let ((fun (slot-definition-type-check-function slotd))) + (when fun + (setf type-check-function + (if type-check-function + (let ((old-function type-check-function)) + (lambda (value) + (funcall old-function value) + (funcall fun value))) + fun)))) (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 @@ -1114,6 +1088,7 @@ :allocation allocation :allocation-class allocation-class :type type + 'type-check-function type-check-function :class class :documentation documentation))) @@ -1143,7 +1118,9 @@ (list class) (make-reader-method-function class slot-name) "automatically generated reader method" - slot-name))) + :slot-name slot-name + :object-class class + :method-class-function #'reader-method-class))) (defmethod writer-method-class ((class slot-class) direct-slot &rest initargs) (declare (ignore direct-slot initargs)) @@ -1157,11 +1134,14 @@ (list *the-class-t* class) (make-writer-method-function class slot-name) "automatically generated writer method" - slot-name))) + :slot-name slot-name + :object-class class + :method-class-function #'writer-method-class))) (defmethod add-boundp-method ((class slot-class) generic-function slot-name) (add-method generic-function - (make-a-method 'standard-boundp-method + (make-a-method (constantly (find-class 'standard-boundp-method)) + class () (list (or (class-name class) 'object)) (list class) @@ -1182,9 +1162,10 @@ (let ((method (get-method generic-function () (list class) nil))) (when method (remove-method generic-function method)))) -;;; MAKE-READER-METHOD-FUNCTION and MAKE-WRITE-METHOD function are NOT -;;; part of the standard protocol. They are however useful, PCL makes -;;; use of them internally and documents them for PCL users. +;;; MAKE-READER-METHOD-FUNCTION and MAKE-WRITER-METHOD-FUNCTION +;;; function are NOT part of the standard protocol. They are however +;;; useful; PCL makes use of them internally and documents them for +;;; PCL users. (FIXME: but SBCL certainly doesn't) ;;; ;;; *** This needs work to make type testing by the writer functions which ;;; *** do type testing faster. The idea would be to have one constructor @@ -1196,13 +1177,13 @@ ;;; *** defined for this metaclass a chance to run. (defmethod make-reader-method-function ((class slot-class) slot-name) - (make-std-reader-method-function (class-name class) slot-name)) + (make-std-reader-method-function class slot-name)) (defmethod make-writer-method-function ((class slot-class) slot-name) - (make-std-writer-method-function (class-name class) slot-name)) + (make-std-writer-method-function class slot-name)) (defmethod make-boundp-method-function ((class slot-class) slot-name) - (make-std-boundp-method-function (class-name class) slot-name)) + (make-std-boundp-method-function class slot-name)) (defmethod compatible-meta-class-change-p (class proto-new-class) (eq (class-of class) (class-of proto-new-class))) @@ -1276,15 +1257,19 @@ (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)) @@ -1357,15 +1342,6 @@ ;; -- --> 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) @@ -1439,6 +1415,8 @@ (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 @@ -1473,6 +1451,19 @@ (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 "~@" + :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) @@ -1528,7 +1519,9 @@ ;; FILE-STREAM and STRING-STREAM (as they have the same ;; layout-depthoid). Is there any way we can provide a useful ;; error message? -- CSR, 2005-05-03 - (eq s *the-class-file-stream*) (eq s *the-class-string-stream*))) + (eq s *the-class-file-stream*) (eq s *the-class-string-stream*) + ;; TODO + (eq s *the-class-sequence*))) ;;; Some necessary methods for FORWARD-REFERENCED-CLASS (defmethod class-direct-slots ((class forward-referenced-class)) ())