1 ;;;; bootstrapping the meta-braid
3 ;;;; The code in this file takes the early definitions that have been
4 ;;;; saved up and actually builds those class objects. This work is
5 ;;;; largely driven off of those class definitions, but the fact that
6 ;;;; STANDARD-CLASS is the class of all metaclasses in the braid is
7 ;;;; built into this code pretty deeply.
9 ;;;; This software is part of the SBCL system. See the README file for
10 ;;;; more information.
12 ;;;; This software is derived from software originally released by Xerox
13 ;;;; Corporation. Copyright and release statements follow. Later modifications
14 ;;;; to the software are in the public domain and are provided with
15 ;;;; absolutely no warranty. See the COPYING and CREDITS files for more
18 ;;;; copyright information from original PCL sources:
20 ;;;; Copyright (c) 1985, 1986, 1987, 1988, 1989, 1990 Xerox Corporation.
21 ;;;; All rights reserved.
23 ;;;; Use and copying of this software and preparation of derivative works based
24 ;;;; upon this software are permitted. Any distribution of this software or
25 ;;;; derivative works must comply with all applicable United States export
28 ;;;; This software is made available AS IS, and Xerox Corporation makes no
29 ;;;; warranty about the software, its performance or its conformity to any
34 (defun allocate-standard-instance (wrapper
35 &optional (slots-init nil slots-init-p))
36 (let ((instance (%make-standard-instance nil (get-instance-hash-code)))
37 (no-of-slots (wrapper-no-of-instance-slots wrapper)))
38 (setf (std-instance-wrapper instance) wrapper)
39 (setf (std-instance-slots instance)
41 ;; Inline the slots vector allocation and initialization.
42 (let ((slots (make-array no-of-slots :initial-element 0)))
43 (do ((rem-slots slots-init (rest rem-slots))
45 ((>= i no-of-slots)) ;endp rem-slots))
46 (declare (list rem-slots)
48 (setf (aref slots i) (first rem-slots)))
51 (make-array no-of-slots
52 :initial-element +slot-unbound+))))
55 (defmacro allocate-standard-funcallable-instance-slots
56 (wrapper &optional slots-init-p slots-init)
57 `(let ((no-of-slots (wrapper-no-of-instance-slots ,wrapper)))
60 (make-array no-of-slots :initial-contents ,slots-init)
61 (make-array no-of-slots :initial-element +slot-unbound+))
62 `(make-array no-of-slots :initial-element +slot-unbound+))))
64 (define-condition unset-funcallable-instance-function
65 (reference-condition simple-error)
68 :references (list '(:amop :generic-function allocate-instance)
69 '(:amop :function set-funcallable-instance-function))))
71 (defun allocate-standard-funcallable-instance
72 (wrapper &optional (slots-init nil slots-init-p))
73 (let ((fin (%make-standard-funcallable-instance
74 nil nil (get-instance-hash-code))))
75 (set-funcallable-instance-function
77 #'(lambda (&rest args)
78 (declare (ignore args))
79 (error 'unset-funcallable-instance-function
80 :format-control "~@<The function of funcallable instance ~
81 ~S has not been set.~@:>"
82 :format-arguments (list fin))))
83 (setf (fsc-instance-wrapper fin) wrapper
84 (fsc-instance-slots fin)
85 (allocate-standard-funcallable-instance-slots
86 wrapper slots-init-p slots-init))
89 (defun allocate-structure-instance (wrapper &optional
90 (slots-init nil slots-init-p))
91 (let* ((class (wrapper-class wrapper))
92 (constructor (class-defstruct-constructor class)))
94 (let ((instance (funcall constructor))
95 (slots (class-slots class)))
98 (setf (slot-value-using-class class instance slot)
101 (error "can't allocate an instance of class ~S" (class-name class)))))
103 ;;;; BOOTSTRAP-META-BRAID
105 ;;;; This function builds the base metabraid from the early class definitions.
107 (defmacro !initial-classes-and-wrappers (&rest classes)
109 ,@(mapcar (lambda (class)
110 (let ((wr (format-symbol *pcl-package* "~A-WRAPPER" class)))
111 `(setf ,wr ,(if (eq class 'standard-generic-function)
114 (early-class-size ',class)
116 ,class (allocate-standard-instance
117 ,(if (eq class 'standard-generic-function)
118 'funcallable-standard-class-wrapper
119 'standard-class-wrapper))
120 (wrapper-class ,wr) ,class
121 (find-class ',class) ,class)))
124 (defun !bootstrap-meta-braid ()
125 (let* ((*create-classes-from-internal-structure-definitions-p* nil)
126 standard-class-wrapper standard-class
127 funcallable-standard-class-wrapper funcallable-standard-class
128 slot-class-wrapper slot-class
129 built-in-class-wrapper built-in-class
130 structure-class-wrapper structure-class
131 condition-class-wrapper condition-class
132 standard-direct-slot-definition-wrapper
133 standard-direct-slot-definition
134 standard-effective-slot-definition-wrapper
135 standard-effective-slot-definition
136 class-eq-specializer-wrapper class-eq-specializer
137 standard-generic-function-wrapper standard-generic-function)
138 (!initial-classes-and-wrappers
139 standard-class funcallable-standard-class
140 slot-class built-in-class structure-class condition-class
141 standard-direct-slot-definition standard-effective-slot-definition
142 class-eq-specializer standard-generic-function)
143 ;; First, make a class metaobject for each of the early classes. For
144 ;; each metaobject we also set its wrapper. Except for the class T,
145 ;; the wrapper is always that of STANDARD-CLASS.
146 (dolist (definition *early-class-definitions*)
147 (let* ((name (ecd-class-name definition))
148 (meta (ecd-metaclass definition))
150 (slot-class slot-class-wrapper)
151 (standard-class standard-class-wrapper)
152 (funcallable-standard-class
153 funcallable-standard-class-wrapper)
154 (built-in-class built-in-class-wrapper)
155 (structure-class structure-class-wrapper)
156 (condition-class condition-class-wrapper)))
157 (class (or (find-class name nil)
158 (allocate-standard-instance wrapper))))
159 (setf (find-class name) class)))
160 (dolist (definition *early-class-definitions*)
161 (let ((name (ecd-class-name definition))
162 (meta (ecd-metaclass definition))
163 (source (ecd-source-location definition))
164 (direct-supers (ecd-superclass-names definition))
165 (direct-slots (ecd-canonical-slots definition))
166 (other-initargs (ecd-other-initargs definition)))
167 (let ((direct-default-initargs
168 (getf other-initargs :direct-default-initargs)))
169 (multiple-value-bind (slots cpl default-initargs direct-subclasses)
170 (early-collect-inheritance name)
171 (let* ((class (find-class name))
172 (wrapper (cond ((eq class slot-class)
174 ((eq class standard-class)
175 standard-class-wrapper)
176 ((eq class funcallable-standard-class)
177 funcallable-standard-class-wrapper)
178 ((eq class standard-direct-slot-definition)
179 standard-direct-slot-definition-wrapper)
181 standard-effective-slot-definition)
182 standard-effective-slot-definition-wrapper)
183 ((eq class built-in-class)
184 built-in-class-wrapper)
185 ((eq class structure-class)
186 structure-class-wrapper)
187 ((eq class condition-class)
188 condition-class-wrapper)
189 ((eq class class-eq-specializer)
190 class-eq-specializer-wrapper)
191 ((eq class standard-generic-function)
192 standard-generic-function-wrapper)
194 (boot-make-wrapper (length slots) name))))
196 (when (eq name t) (setq *the-wrapper-of-t* wrapper))
197 (set (make-class-symbol name) class)
199 (unless (eq (getf slot :allocation :instance) :instance)
200 (error "Slot allocation ~S is not supported in bootstrap."
201 (getf slot :allocation))))
203 (when (typep wrapper 'wrapper)
204 (setf (wrapper-instance-slots-layout wrapper)
205 (mapcar #'canonical-slot-name slots))
206 (setf (wrapper-class-slots wrapper)
209 (setq proto (if (eq meta 'funcallable-standard-class)
210 (allocate-standard-funcallable-instance wrapper)
211 (allocate-standard-instance wrapper)))
214 (!bootstrap-make-slot-definitions
215 name class direct-slots
216 standard-direct-slot-definition-wrapper nil))
218 (!bootstrap-make-slot-definitions
220 standard-effective-slot-definition-wrapper t))
223 ((standard-class funcallable-standard-class)
224 (!bootstrap-initialize-class
226 class name class-eq-specializer-wrapper source
227 direct-supers direct-subclasses cpl wrapper proto
228 direct-slots slots direct-default-initargs default-initargs))
229 (built-in-class ; *the-class-t*
230 (!bootstrap-initialize-class
232 class name class-eq-specializer-wrapper source
233 direct-supers direct-subclasses cpl wrapper proto))
234 (slot-class ; *the-class-slot-object*
235 (!bootstrap-initialize-class
237 class name class-eq-specializer-wrapper source
238 direct-supers direct-subclasses cpl wrapper proto))
239 (structure-class ; *the-class-structure-object*
240 (!bootstrap-initialize-class
242 class name class-eq-specializer-wrapper source
243 direct-supers direct-subclasses cpl wrapper))
245 (!bootstrap-initialize-class
247 class name class-eq-specializer-wrapper source
248 direct-supers direct-subclasses cpl wrapper))))))))
250 (let* ((smc-class (find-class 'standard-method-combination))
251 (smc-wrapper (!bootstrap-get-slot 'standard-class
254 (smc (allocate-standard-instance smc-wrapper)))
255 (flet ((set-slot (name value)
256 (!bootstrap-set-slot 'standard-method-combination
260 (set-slot 'source nil)
261 (set-slot 'type-name 'standard)
262 (set-slot '%documentation "The standard method combination.")
263 (set-slot 'options ()))
264 (setq *standard-method-combination* smc))))
266 ;;; Initialize a class metaobject.
267 (defun !bootstrap-initialize-class
268 (metaclass-name class name
269 class-eq-wrapper source direct-supers direct-subclasses cpl wrapper
272 direct-slots slots direct-default-initargs default-initargs)
273 (flet ((classes (names) (mapcar #'find-class names))
274 (set-slot (slot-name value)
275 (!bootstrap-set-slot metaclass-name class slot-name value)))
276 (set-slot 'name name)
277 (set-slot 'finalized-p t)
278 (set-slot 'source source)
279 (set-slot '%type (if (eq class (find-class t))
281 ;; FIXME: Could this just be CLASS instead
282 ;; of `(CLASS ,CLASS)? If not, why not?
283 ;; (See also similar expression in
284 ;; SHARED-INITIALIZE :BEFORE (CLASS).)
286 (set-slot 'class-eq-specializer
287 (let ((spec (allocate-standard-instance class-eq-wrapper)))
288 (!bootstrap-set-slot 'class-eq-specializer spec '%type
290 (!bootstrap-set-slot 'class-eq-specializer spec 'object
293 (set-slot '%class-precedence-list (classes cpl))
294 (set-slot 'cpl-available-p t)
295 (set-slot 'can-precede-list (classes (cdr cpl)))
296 (set-slot 'incompatible-superclass-list nil)
297 (set-slot 'direct-superclasses (classes direct-supers))
298 (set-slot 'direct-subclasses (classes direct-subclasses))
299 (set-slot 'direct-methods (cons nil nil))
300 (set-slot 'wrapper wrapper)
301 (set-slot '%documentation nil)
303 `(,@(and direct-default-initargs
304 `(direct-default-initargs ,direct-default-initargs))
305 ,@(and default-initargs
306 `(default-initargs ,default-initargs))))
307 (when (memq metaclass-name '(standard-class funcallable-standard-class
308 structure-class condition-class
310 (set-slot 'direct-slots direct-slots)
311 (set-slot 'slots slots))
313 ;; For all direct superclasses SUPER of CLASS, make sure CLASS is
314 ;; a direct subclass of SUPER. Note that METACLASS-NAME doesn't
315 ;; matter here for the slot DIRECT-SUBCLASSES, since every class
316 ;; inherits the slot from class CLASS.
317 (dolist (super direct-supers)
318 (let* ((super (find-class super))
319 (subclasses (!bootstrap-get-slot metaclass-name super
320 'direct-subclasses)))
321 (cond ((eq +slot-unbound+ subclasses)
322 (!bootstrap-set-slot metaclass-name super 'direct-subclasses
324 ((not (memq class subclasses))
325 (!bootstrap-set-slot metaclass-name super 'direct-subclasses
326 (cons class subclasses))))))
330 (let ((constructor-sym '|STRUCTURE-OBJECT class constructor|))
331 (set-slot 'defstruct-form
332 `(defstruct (structure-object (:constructor
335 (set-slot 'defstruct-constructor constructor-sym)
336 (set-slot 'from-defclass-p t)
337 (set-slot 'plist nil)
338 (set-slot 'prototype (funcall constructor-sym))))
340 (set-slot 'prototype (make-condition name)))
343 (if proto-p proto (allocate-standard-instance wrapper)))))
346 (defun !bootstrap-make-slot-definitions (name class slots wrapper effective-p)
348 (mapcar (lambda (slot)
350 (!bootstrap-make-slot-definition
351 name class slot wrapper effective-p index))
354 (defun !bootstrap-make-slot-definition
355 (name class slot wrapper effective-p index)
356 (let* ((slotd-class-name (if effective-p
357 'standard-effective-slot-definition
358 'standard-direct-slot-definition))
359 (slotd (allocate-standard-instance wrapper))
360 (slot-name (getf slot :name)))
361 (flet ((get-val (name) (getf slot name))
363 (!bootstrap-set-slot slotd-class-name slotd name val)))
364 (set-val 'name slot-name)
365 (set-val 'initform (get-val :initform))
366 (set-val 'initfunction (get-val :initfunction))
367 (set-val 'initargs (get-val :initargs))
368 (set-val 'readers (get-val :readers))
369 (set-val 'writers (get-val :writers))
370 (set-val 'allocation :instance)
371 (set-val '%type (or (get-val :type) t))
372 (set-val '%documentation (or (get-val :documentation) ""))
373 (set-val '%class class)
375 (set-val 'location index)
377 (set-val 'reader-function (make-optimized-std-reader-method-function
378 fsc-p nil slot-name index))
379 (set-val 'writer-function (make-optimized-std-writer-method-function
380 fsc-p nil slot-name index))
381 (set-val 'boundp-function (make-optimized-std-boundp-method-function
382 fsc-p nil slot-name index)))
383 (set-val 'accessor-flags 7))
384 (when (and (eq name 'standard-class)
385 (eq slot-name 'slots) effective-p)
386 (setq *the-eslotd-standard-class-slots* slotd))
387 (when (and (eq name 'funcallable-standard-class)
388 (eq slot-name 'slots) effective-p)
389 (setq *the-eslotd-funcallable-standard-class-slots* slotd))
392 (defun !bootstrap-accessor-definitions (early-p)
393 (let ((*early-p* early-p))
394 (dolist (definition *early-class-definitions*)
395 (let ((name (ecd-class-name definition))
396 (meta (ecd-metaclass definition)))
397 (unless (eq meta 'built-in-class)
398 (let ((direct-slots (ecd-canonical-slots definition)))
399 (dolist (slotd direct-slots)
400 (let ((slot-name (getf slotd :name))
401 (readers (getf slotd :readers))
402 (writers (getf slotd :writers)))
403 (!bootstrap-accessor-definitions1
410 (defun !bootstrap-accessor-definition (class-name accessor-name slot-name type)
411 (multiple-value-bind (accessor-class make-method-function arglist specls doc)
413 (reader (values 'standard-reader-method
414 #'make-std-reader-method-function
417 "automatically generated reader method"))
418 (writer (values 'standard-writer-method
419 #'make-std-writer-method-function
420 (list 'new-value class-name)
422 "automatically generated writer method"))
423 (boundp (values 'standard-boundp-method
424 #'make-std-boundp-method-function
427 "automatically generated boundp method")))
428 (let ((gf (ensure-generic-function accessor-name :lambda-list arglist)))
429 (if (find specls (early-gf-methods gf)
430 :key #'early-method-specializers
432 (unless (assoc accessor-name *!generic-function-fixups*
436 (make-a-method accessor-class
439 (funcall make-method-function
440 class-name slot-name)
443 :object-class class-name
444 :method-class-function (constantly (find-class accessor-class))))))))
446 (defun !bootstrap-accessor-definitions1 (class-name
451 (flet ((do-reader-definition (reader)
452 (!bootstrap-accessor-definition class-name
456 (do-writer-definition (writer)
457 (!bootstrap-accessor-definition class-name
461 (do-boundp-definition (boundp)
462 (!bootstrap-accessor-definition class-name
466 (dolist (reader readers) (do-reader-definition reader))
467 (dolist (writer writers) (do-writer-definition writer))
468 (dolist (boundp boundps) (do-boundp-definition boundp))))
470 ;;; FIXME: find a better name.
471 (defun !bootstrap-class-predicates (early-p)
472 (let ((*early-p* early-p))
473 (dolist (ecp *early-class-predicates*)
474 (let ((class-name (car ecp))
475 (predicate-name (cadr ecp)))
476 (make-class-predicate (find-class class-name) predicate-name)))))
478 (defun !bootstrap-built-in-classes ()
480 ;; First make sure that all the supers listed in
481 ;; *BUILT-IN-CLASS-LATTICE* are themselves defined by
482 ;; *BUILT-IN-CLASS-LATTICE*. This is just to check for typos and
483 ;; other sorts of brainos.
484 (dolist (e *built-in-classes*)
485 (dolist (super (cadr e))
486 (unless (or (eq super t)
487 (assq super *built-in-classes*))
488 (error "in *BUILT-IN-CLASSES*: ~S has ~S as a super,~%~
489 but ~S is not itself a class in *BUILT-IN-CLASSES*."
490 (car e) super super))))
492 ;; In the first pass, we create a skeletal object to be bound to the
494 (let* ((built-in-class (find-class 'built-in-class))
495 (built-in-class-wrapper (class-wrapper built-in-class)))
496 (dolist (e *built-in-classes*)
497 (let ((class (allocate-standard-instance built-in-class-wrapper)))
498 (setf (find-class (car e)) class))))
500 ;; In the second pass, we initialize the class objects.
501 (let ((class-eq-wrapper (class-wrapper (find-class 'class-eq-specializer))))
502 (dolist (e *built-in-classes*)
503 (destructuring-bind (name supers subs cpl prototype) e
504 (let* ((class (find-class name))
505 (lclass (find-classoid name))
506 (wrapper (classoid-layout lclass)))
507 (set (get-built-in-class-symbol name) class)
508 (set (get-built-in-wrapper-symbol name) wrapper)
509 (setf (classoid-pcl-class lclass) class)
511 (!bootstrap-initialize-class 'built-in-class class
512 name class-eq-wrapper nil
515 wrapper prototype))))))
517 (defmacro wrapper-of-macro (x)
521 (wrapper-class* (wrapper-of-macro x)))
523 ;;; FIXME: We probably don't need both WRAPPER-OF and WRAPPER-OF-MACRO.
524 #-sb-fluid (declaim (inline wrapper-of))
525 (defun wrapper-of (x)
526 (wrapper-of-macro x))
528 (defun eval-form (form)
529 (lambda () (eval form)))
531 (defun ensure-non-standard-class (name &optional existing-class)
533 ((ensure (metaclass &optional (slots nil slotsp))
535 (mapcar #'classoid-name (classoid-direct-superclasses
536 (find-classoid name)))))
538 (ensure-class-using-class existing-class name
539 :metaclass metaclass :name name
540 :direct-superclasses supers
542 (ensure-class-using-class existing-class name
543 :metaclass metaclass :name name
544 :direct-superclasses supers))))
545 (slot-initargs-from-structure-slotd (slotd)
546 (let ((accessor (structure-slotd-accessor-symbol slotd)))
547 `(:name ,(structure-slotd-name slotd)
548 :defstruct-accessor-symbol ,accessor
549 ,@(when (fboundp accessor)
550 `(:internal-reader-function
551 ,(structure-slotd-reader-function slotd)
552 :internal-writer-function
553 ,(structure-slotd-writer-function name slotd)))
554 :type ,(or (structure-slotd-type slotd) t)
555 :initform ,(structure-slotd-init-form slotd)
556 :initfunction ,(eval-form (structure-slotd-init-form slotd)))))
557 (slot-initargs-from-condition-slot (slot)
558 `(:name ,(condition-slot-name slot)
559 :initargs ,(condition-slot-initargs slot)
560 :readers ,(condition-slot-readers slot)
561 :writers ,(condition-slot-writers slot)
562 ,@(when (condition-slot-initform-p slot)
563 (let ((form-or-fun (condition-slot-initform slot)))
564 (if (functionp form-or-fun)
565 `(:initfunction ,form-or-fun)
566 `(:initform ,form-or-fun
567 :initfunction ,(lambda () form-or-fun)))))
568 :allocation ,(condition-slot-allocation slot)
569 :documentation ,(condition-slot-documentation slot))))
570 (cond ((structure-type-p name)
571 (ensure 'structure-class
572 (mapcar #'slot-initargs-from-structure-slotd
573 (structure-type-slot-description-list name))))
574 ((condition-type-p name)
575 (ensure 'condition-class
576 (mapcar #'slot-initargs-from-condition-slot
577 (condition-classoid-slots (find-classoid name)))))
579 (error "~@<~S is not the name of a class.~@:>" name)))))
581 (defun ensure-deffoo-class (classoid)
582 (let ((class (classoid-pcl-class classoid)))
584 (ensure-non-standard-class (class-name class) class))
585 ((eq 'complete *boot-state*)
586 (ensure-non-standard-class (classoid-name classoid))))))
588 (pushnew 'ensure-deffoo-class sb-kernel::*defstruct-hooks*)
589 (pushnew 'ensure-deffoo-class sb-kernel::*define-condition-hooks*)
591 ;;; FIXME: only needed during bootstrap
592 (defun make-class-predicate (class name)
593 (let* ((gf (ensure-generic-function name :lambda-list '(object)))
594 (mlist (if (eq *boot-state* 'complete)
595 (generic-function-methods gf)
596 (early-gf-methods gf))))
598 (unless (eq class *the-class-t*)
599 (let* ((default-method-function #'constantly-nil)
600 (default-method-initargs (list :function default-method-function
601 'plist '(:constant-value nil)))
602 (default-method (make-a-method
607 default-method-initargs
608 "class predicate default method")))
609 (add-method gf default-method)))
610 (let* ((class-method-function #'constantly-t)
611 (class-method-initargs (list :function class-method-function
612 'plist '(:constant-value t)))
613 (class-method (make-a-method 'standard-method
617 class-method-initargs
618 "class predicate class method")))
619 (add-method gf class-method)))
622 ;;; Set the inherits from CPL, and register the layout. This actually
623 ;;; installs the class in the Lisp type system.
624 (defun update-lisp-class-layout (class layout)
625 (let ((classoid (layout-classoid layout))
626 (olayout (class-wrapper class)))
627 (unless (eq (classoid-layout classoid) layout)
628 (setf (layout-inherits layout)
629 (order-layout-inherits
630 (map 'simple-vector #'class-wrapper
631 (reverse (rest (class-precedence-list class))))))
632 (register-layout layout :invalidate t)
634 ;; FIXME: I don't think this should be necessary, but without it
635 ;; we are unable to compile (TYPEP foo '<class-name>) in the
636 ;; same file as the class is defined. If we had environments,
637 ;; then I think the classsoid whould only be associated with the
638 ;; name in that environment... Alternatively, fix the compiler
639 ;; so that TYPEP foo '<class-name> is slow but compileable.
640 (let ((name (class-name class)))
641 (when (and name (symbolp name) (eq name (classoid-name classoid)))
642 (setf (find-classoid name) classoid))))))
644 (defun set-class-type-translation (class classoid)
645 (when (not (typep classoid 'classoid))
646 (setq classoid (find-classoid classoid nil)))
650 (let ((translation (built-in-classoid-translation classoid)))
653 (aver (ctype-p translation))
654 (setf (info :type :translator class)
655 (lambda (spec) (declare (ignore spec)) translation)))
657 (setf (info :type :translator class)
658 (lambda (spec) (declare (ignore spec)) classoid))))))
660 (setf (info :type :translator class)
661 (lambda (spec) (declare (ignore spec)) classoid)))))
663 (clrhash *find-class*)
664 (!bootstrap-meta-braid)
665 (!bootstrap-accessor-definitions t)
666 (!bootstrap-class-predicates t)
667 (!bootstrap-accessor-definitions nil)
668 (!bootstrap-class-predicates nil)
669 (!bootstrap-built-in-classes)
671 (dohash (name x *find-class*)
672 (let* ((class (find-class-from-cell name x))
673 (layout (class-wrapper class))
674 (lclass (layout-classoid layout))
675 (lclass-pcl-class (classoid-pcl-class lclass))
676 (olclass (find-classoid name nil)))
678 (aver (eq class lclass-pcl-class))
679 (setf (classoid-pcl-class lclass) class))
681 (update-lisp-class-layout class layout)
684 (aver (eq lclass olclass)))
686 (setf (find-classoid name) lclass)))
688 (set-class-type-translation class name)))
690 (setq *boot-state* 'braid)
692 (defmethod no-applicable-method (generic-function &rest args)
693 (error "~@<There is no applicable method for the generic function ~2I~_~S~
694 ~I~_when called with arguments ~2I~_~S.~:>"
698 (defmethod no-next-method ((generic-function standard-generic-function)
699 (method standard-method) &rest args)
700 (error "~@<There is no next method for the generic function ~2I~_~S~
701 ~I~_when called from method ~2I~_~S~I~_with arguments ~2I~_~S.~:>"
706 ;;; An extension to the ANSI standard: in the presence of e.g. a
707 ;;; :BEFORE method, it would seem that going through
708 ;;; NO-APPLICABLE-METHOD is prohibited, as in fact there is an
709 ;;; applicable method. -- CSR, 2002-11-15
710 (defmethod no-primary-method (generic-function &rest args)
711 (error "~@<There is no primary method for the generic function ~2I~_~S~
712 ~I~_when called with arguments ~2I~_~S.~:>"
716 (defmethod invalid-qualifiers ((gf generic-function)
719 (let ((qualifiers (method-qualifiers method)))
721 ((cdr qualifiers) "has too many qualifiers")
722 (t (aver (not (member (car qualifiers)
723 '(:around :before :after))))
724 "has an invalid qualifier"))))
725 (invalid-method-error
727 "The method ~S on ~S ~A.~%~
728 Standard method combination requires all methods to have one~%~
729 of the single qualifiers :AROUND, :BEFORE and :AFTER or to~%~
730 have no qualifier at all."