;;;; various class accessors that are a little more complicated than can be
;;;; done with automatically generated reader methods
-(defmethod class-prototype ((class std-class))
- (with-slots (prototype) class
- (or prototype (setq prototype (allocate-instance class)))))
-
-(defmethod class-prototype ((class structure-class))
- (with-slots (prototype wrapper defstruct-constructor) class
- (or prototype
- (setq prototype
- (if defstruct-constructor
- (allocate-instance class)
- (allocate-standard-instance wrapper))))))
-
-(defmethod class-prototype ((class condition-class))
- (with-slots (prototype) class
- (or prototype (setf prototype (allocate-instance class)))))
+(defmethod class-prototype :before (class)
+ (unless (class-finalized-p class)
+ (error "~S not yet finalized, cannot allocate a prototype." class)))
+
+;;; KLUDGE: For some reason factoring the common body into a function
+;;; breaks PCL bootstrapping, so just generate it with a macrolet for
+;;; all.
+(macrolet ((def (class)
+ `(defmethod class-prototype ((class ,class))
+ (with-slots (prototype) class
+ (or prototype
+ (setf prototype (allocate-instance class)))))))
+ (def std-class)
+ (def condition-class)
+ (def structure-class))
(defmethod class-direct-default-initargs ((class slot-class))
(plist-value class 'direct-default-initargs))
(setf (info :type :translator specl)
(constantly (make-member-type :members (list (specializer-object specl))))))
-\f
(defun real-load-defclass (name metaclass-name supers slots other
readers writers slot-names)
(with-single-package-locked-error (:symbol name "defining ~S as a class")
(make-instance 'forward-referenced-class
:name s)))))
-(defun ensure-class-values (class args)
- (let* ((initargs (copy-list args))
- (unsupplied (list 1))
- (supplied-meta (getf initargs :metaclass unsupplied))
- (supplied-supers (getf initargs :direct-superclasses unsupplied))
- (supplied-slots (getf initargs :direct-slots unsupplied))
- (meta
- (cond ((neq supplied-meta unsupplied)
- (find-class supplied-meta))
- ((or (null class)
- (forward-referenced-class-p class))
- *the-class-standard-class*)
- (t
- (class-of class)))))
- ;; KLUDGE: It seemed to me initially that there ought to be a way
- ;; of collecting all the erroneous problems in one go, rather than
- ;; this way of solving the problem of signalling the errors that
- ;; we are required to, which stops at the first bogus input.
- ;; However, after playing around a little, I couldn't find that
- ;; way, so I've left it as is, but if someone does come up with a
- ;; better way... -- CSR, 2002-09-08
- (do ((direct-slots (getf initargs :direct-slots) (cdr direct-slots)))
- ((endp direct-slots) nil)
- (destructuring-bind (slot &rest more) direct-slots
- (let ((slot-name (getf slot :name)))
- (when (some (lambda (s) (eq slot-name (getf s :name))) more)
- ;; FIXME: It's quite possible that we ought to define an
- ;; SB-INT:PROGRAM-ERROR function to signal these and other
- ;; errors throughout the codebase that are required to be
- ;; of type PROGRAM-ERROR.
- (error 'simple-program-error
- :format-control "~@<There is more than one direct slot ~
- with name ~S.~:>"
- :format-arguments (list slot-name)))
- (do ((stuff slot (cddr stuff)))
- ((endp stuff) nil)
- (destructuring-bind (option value &rest more) stuff
- (cond
- ((and (member option '(:allocation :type
- :initform :documentation))
- (not (eq unsupplied
- (getf more option unsupplied))))
- (error 'simple-program-error
- :format-control "~@<Duplicate slot option ~S for ~
- slot named ~S.~:>"
- :format-arguments (list option slot-name)))
- ((and (eq option :readers)
- (notevery #'symbolp value))
- (error 'simple-program-error
- :format-control "~@<Slot reader names for slot ~
- named ~S must be symbols.~:>"
- :format-arguments (list slot-name)))
- ((and (eq option :initargs)
- (notevery #'symbolp value))
- (error 'simple-program-error
- :format-control "~@<Slot initarg names for slot ~
- named ~S must be symbols.~:>"
- :format-arguments (list slot-name)))))))))
- (loop for (initarg . more) on (getf initargs :direct-default-initargs)
- for name = (car initarg)
- when (some (lambda (a) (eq (car a) name)) more)
- do (error 'simple-program-error
- :format-control "~@<Duplicate initialization argument ~
- name ~S in :DEFAULT-INITARGS.~:>"
- :format-arguments (list name class)))
- (let ((metaclass 0)
- (default-initargs 0))
- (do ((args initargs (cddr args)))
- ((endp args) nil)
- (case (car args)
- (:metaclass
- (when (> (incf metaclass) 1)
- (error 'simple-program-error
- :format-control "~@<More than one :METACLASS ~
- option specified.~:>")))
- (:direct-default-initargs
- (when (> (incf default-initargs) 1)
- (error 'simple-program-error
- :format-control "~@<More than one :DEFAULT-INITARGS ~
- option specified.~:>"))))))
- (remf initargs :metaclass)
- (loop (unless (remf initargs :direct-superclasses) (return)))
- (loop (unless (remf initargs :direct-slots) (return)))
- (values
- meta
- (nconc
- (when (neq supplied-supers unsupplied)
- (list :direct-superclasses (mapcar #'fix-super supplied-supers)))
- (when (neq supplied-slots unsupplied)
- (list :direct-slots supplied-slots))
- initargs))))
+(defun ensure-class-values (class initargs)
+ (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
+ (find-class metaclass))
+ ((or (null class) (forward-referenced-class-p class))
+ *the-class-standard-class*)
+ (t
+ (class-of class)))
+ (nreverse reversed-plist))))
+
\f
(defmethod shared-initialize :after
((class std-class)
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