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-funcallable-instance-slots (wrapper &optional
56 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 (defun allocate-funcallable-instance (wrapper &optional
65 (slots-init nil slots-init-p))
66 (let ((fin (%make-pcl-funcallable-instance nil nil
67 (get-instance-hash-code))))
68 (set-funcallable-instance-function
70 #'(instance-lambda (&rest args)
71 (declare (ignore args))
72 (error "The function of the funcallable-instance ~S has not been set."
74 (setf (fsc-instance-wrapper fin) wrapper
75 (fsc-instance-slots fin) (allocate-funcallable-instance-slots
76 wrapper slots-init-p slots-init))
79 (defun allocate-structure-instance (wrapper &optional
80 (slots-init nil slots-init-p))
81 (let* ((class (wrapper-class wrapper))
82 (constructor (class-defstruct-constructor class)))
84 (let ((instance (funcall constructor))
85 (slots (class-slots class)))
88 (setf (slot-value-using-class class instance slot)
91 (error "can't allocate an instance of class ~S" (class-name class)))))
93 ;;;; BOOTSTRAP-META-BRAID
95 ;;;; This function builds the base metabraid from the early class definitions.
97 (defmacro !initial-classes-and-wrappers (&rest classes)
99 ,@(mapcar (lambda (class)
100 (let ((wr (intern (format nil "~A-WRAPPER" class)
102 `(setf ,wr ,(if (eq class 'standard-generic-function)
105 (early-class-size ',class)
107 ,class (allocate-standard-instance
108 ,(if (eq class 'standard-generic-function)
109 'funcallable-standard-class-wrapper
110 'standard-class-wrapper))
111 (wrapper-class ,wr) ,class
112 (find-class ',class) ,class)))
115 (defun !bootstrap-meta-braid ()
116 (let* ((*create-classes-from-internal-structure-definitions-p* nil)
117 std-class-wrapper std-class
118 standard-class-wrapper standard-class
119 funcallable-standard-class-wrapper funcallable-standard-class
120 slot-class-wrapper slot-class
121 built-in-class-wrapper built-in-class
122 structure-class-wrapper structure-class
123 condition-class-wrapper condition-class
124 standard-direct-slot-definition-wrapper
125 standard-direct-slot-definition
126 standard-effective-slot-definition-wrapper
127 standard-effective-slot-definition
128 class-eq-specializer-wrapper class-eq-specializer
129 standard-generic-function-wrapper standard-generic-function)
130 (!initial-classes-and-wrappers
131 standard-class funcallable-standard-class
132 slot-class built-in-class structure-class condition-class std-class
133 standard-direct-slot-definition standard-effective-slot-definition
134 class-eq-specializer standard-generic-function)
135 ;; First, make a class metaobject for each of the early classes. For
136 ;; each metaobject we also set its wrapper. Except for the class T,
137 ;; the wrapper is always that of STANDARD-CLASS.
138 (dolist (definition *early-class-definitions*)
139 (let* ((name (ecd-class-name definition))
140 (meta (ecd-metaclass definition))
142 (slot-class slot-class-wrapper)
143 (std-class std-class-wrapper)
144 (standard-class standard-class-wrapper)
145 (funcallable-standard-class
146 funcallable-standard-class-wrapper)
147 (built-in-class built-in-class-wrapper)
148 (structure-class structure-class-wrapper)
149 (condition-class condition-class-wrapper)))
150 (class (or (find-class name nil)
151 (allocate-standard-instance wrapper))))
152 (setf (find-class name) class)))
153 (dolist (definition *early-class-definitions*)
154 (let ((name (ecd-class-name definition))
155 (meta (ecd-metaclass definition))
156 (source (ecd-source definition))
157 (direct-supers (ecd-superclass-names definition))
158 (direct-slots (ecd-canonical-slots definition))
159 (other-initargs (ecd-other-initargs definition)))
160 (let ((direct-default-initargs
161 (getf other-initargs :direct-default-initargs)))
162 (multiple-value-bind (slots cpl default-initargs direct-subclasses)
163 (early-collect-inheritance name)
164 (let* ((class (find-class name))
165 (wrapper (cond ((eq class slot-class)
167 ((eq class std-class)
169 ((eq class standard-class)
170 standard-class-wrapper)
171 ((eq class funcallable-standard-class)
172 funcallable-standard-class-wrapper)
173 ((eq class standard-direct-slot-definition)
174 standard-direct-slot-definition-wrapper)
176 standard-effective-slot-definition)
177 standard-effective-slot-definition-wrapper)
178 ((eq class built-in-class)
179 built-in-class-wrapper)
180 ((eq class structure-class)
181 structure-class-wrapper)
182 ((eq class condition-class)
183 condition-class-wrapper)
184 ((eq class class-eq-specializer)
185 class-eq-specializer-wrapper)
186 ((eq class standard-generic-function)
187 standard-generic-function-wrapper)
189 (boot-make-wrapper (length slots) name))))
191 (when (eq name t) (setq *the-wrapper-of-t* wrapper))
192 (set (intern (format nil "*THE-CLASS-~A*" (symbol-name name))
196 (unless (eq (getf slot :allocation :instance) :instance)
197 (error "Slot allocation ~S is not supported in bootstrap.")))
199 (when (typep wrapper 'wrapper)
200 (setf (wrapper-instance-slots-layout wrapper)
201 (mapcar #'canonical-slot-name slots))
202 (setf (wrapper-class-slots wrapper)
205 (setq proto (if (eq meta 'funcallable-standard-class)
206 (allocate-funcallable-instance wrapper)
207 (allocate-standard-instance wrapper)))
210 (!bootstrap-make-slot-definitions
211 name class direct-slots
212 standard-direct-slot-definition-wrapper nil))
214 (!bootstrap-make-slot-definitions
216 standard-effective-slot-definition-wrapper t))
219 ((std-class standard-class funcallable-standard-class)
220 (!bootstrap-initialize-class
222 class name class-eq-specializer-wrapper source
223 direct-supers direct-subclasses cpl wrapper proto
224 direct-slots slots direct-default-initargs default-initargs))
225 (built-in-class ; *the-class-t*
226 (!bootstrap-initialize-class
228 class name class-eq-specializer-wrapper source
229 direct-supers direct-subclasses cpl wrapper proto))
230 (slot-class ; *the-class-slot-object*
231 (!bootstrap-initialize-class
233 class name class-eq-specializer-wrapper source
234 direct-supers direct-subclasses cpl wrapper proto))
235 (structure-class ; *the-class-structure-object*
236 (!bootstrap-initialize-class
238 class name class-eq-specializer-wrapper source
239 direct-supers direct-subclasses cpl wrapper))
241 (!bootstrap-initialize-class
243 class name class-eq-specializer-wrapper source
244 direct-supers direct-subclasses cpl wrapper))))))))
246 (let* ((smc-class (find-class 'standard-method-combination))
247 (smc-wrapper (!bootstrap-get-slot 'standard-class
250 (smc (allocate-standard-instance smc-wrapper)))
251 (flet ((set-slot (name value)
252 (!bootstrap-set-slot 'standard-method-combination
256 (set-slot 'source *load-pathname*)
257 (set-slot 'type 'standard)
258 (set-slot 'documentation "The standard method combination.")
259 (set-slot 'options ()))
260 (setq *standard-method-combination* smc))))
262 ;;; Initialize a class metaobject.
263 (defun !bootstrap-initialize-class
264 (metaclass-name class name
265 class-eq-wrapper source direct-supers direct-subclasses cpl wrapper
268 direct-slots slots direct-default-initargs default-initargs)
269 (flet ((classes (names) (mapcar #'find-class names))
270 (set-slot (slot-name value)
271 (!bootstrap-set-slot metaclass-name class slot-name value)))
272 (set-slot 'name name)
273 (set-slot 'finalized-p t)
274 (set-slot 'source source)
275 (set-slot 'type (if (eq class (find-class t))
277 ;; FIXME: Could this just be CLASS instead
278 ;; of `(CLASS ,CLASS)? If not, why not?
279 ;; (See also similar expression in
280 ;; SHARED-INITIALIZE :BEFORE (CLASS).)
282 (set-slot 'class-eq-specializer
283 (let ((spec (allocate-standard-instance class-eq-wrapper)))
284 (!bootstrap-set-slot 'class-eq-specializer spec 'type
286 (!bootstrap-set-slot 'class-eq-specializer spec 'object
289 (set-slot 'class-precedence-list (classes cpl))
290 (set-slot 'can-precede-list (classes (cdr cpl)))
291 (set-slot 'incompatible-superclass-list nil)
292 (set-slot 'direct-superclasses (classes direct-supers))
293 (set-slot 'direct-subclasses (classes direct-subclasses))
294 (set-slot 'direct-methods (cons nil nil))
295 (set-slot 'wrapper wrapper)
296 (set-slot 'predicate-name (or (cadr (assoc name *early-class-predicates*))
297 (make-class-predicate-name name)))
299 `(,@(and direct-default-initargs
300 `(direct-default-initargs ,direct-default-initargs))
301 ,@(and default-initargs
302 `(default-initargs ,default-initargs))))
303 (when (memq metaclass-name '(standard-class funcallable-standard-class
304 structure-class condition-class
305 slot-class std-class))
306 (set-slot 'direct-slots direct-slots)
307 (set-slot 'slots slots))
309 ;; For all direct superclasses SUPER of CLASS, make sure CLASS is
310 ;; a direct subclass of SUPER. Note that METACLASS-NAME doesn't
311 ;; matter here for the slot DIRECT-SUBCLASSES, since every class
312 ;; inherits the slot from class CLASS.
313 (dolist (super direct-supers)
314 (let* ((super (find-class super))
315 (subclasses (!bootstrap-get-slot metaclass-name super
316 'direct-subclasses)))
317 (cond ((eq +slot-unbound+ subclasses)
318 (!bootstrap-set-slot metaclass-name super 'direct-subclasses
320 ((not (memq class subclasses))
321 (!bootstrap-set-slot metaclass-name super 'direct-subclasses
322 (cons class subclasses))))))
326 (let ((constructor-sym '|STRUCTURE-OBJECT class constructor|))
327 (set-slot 'predicate-name (or (cadr (assoc name
328 *early-class-predicates*))
329 (make-class-predicate-name name)))
330 (set-slot 'defstruct-form
331 `(defstruct (structure-object (:constructor
334 (set-slot 'defstruct-constructor constructor-sym)
335 (set-slot 'from-defclass-p t)
336 (set-slot 'plist nil)
337 (set-slot 'prototype (funcall constructor-sym))))
339 (set-slot 'prototype (make-condition name)))
342 (if proto-p proto (allocate-standard-instance wrapper)))))
345 (defun !bootstrap-make-slot-definitions (name class slots wrapper effective-p)
347 (mapcar (lambda (slot)
349 (!bootstrap-make-slot-definition
350 name class slot wrapper effective-p index))
353 (defun !bootstrap-make-slot-definition
354 (name class slot wrapper effective-p index)
355 (let* ((slotd-class-name (if effective-p
356 'standard-effective-slot-definition
357 'standard-direct-slot-definition))
358 (slotd (allocate-standard-instance wrapper))
359 (slot-name (getf slot :name)))
360 (flet ((get-val (name) (getf slot name))
362 (!bootstrap-set-slot slotd-class-name slotd name val)))
363 (set-val 'name slot-name)
364 (set-val 'initform (get-val :initform))
365 (set-val 'initfunction (get-val :initfunction))
366 (set-val 'initargs (get-val :initargs))
367 (set-val 'readers (get-val :readers))
368 (set-val 'writers (get-val :writers))
369 (set-val 'allocation :instance)
370 (set-val 'type (or (get-val :type) t))
371 (set-val 'documentation (or (get-val :documentation) ""))
372 (set-val 'class class)
374 (set-val 'location index)
376 (set-val 'reader-function (make-optimized-std-reader-method-function
377 fsc-p slot-name index))
378 (set-val 'writer-function (make-optimized-std-writer-method-function
379 fsc-p slot-name index))
380 (set-val 'boundp-function (make-optimized-std-boundp-method-function
381 fsc-p slot-name index)))
382 (set-val 'accessor-flags 7)
383 (let ((table (or (gethash slot-name *name->class->slotd-table*)
384 (setf (gethash slot-name *name->class->slotd-table*)
385 (make-hash-table :test 'eq :size 5)))))
386 (setf (gethash class table) slotd)))
387 (when (and (eq name 'standard-class)
388 (eq slot-name 'slots) effective-p)
389 (setq *the-eslotd-standard-class-slots* slotd))
390 (when (and (eq name 'funcallable-standard-class)
391 (eq slot-name 'slots) effective-p)
392 (setq *the-eslotd-funcallable-standard-class-slots* slotd))
395 (defun !bootstrap-accessor-definitions (early-p)
396 (let ((*early-p* early-p))
397 (dolist (definition *early-class-definitions*)
398 (let ((name (ecd-class-name definition))
399 (meta (ecd-metaclass definition)))
400 (unless (eq meta 'built-in-class)
401 (let ((direct-slots (ecd-canonical-slots definition)))
402 (dolist (slotd direct-slots)
403 (let ((slot-name (getf slotd :name))
404 (readers (getf slotd :readers))
405 (writers (getf slotd :writers)))
406 (!bootstrap-accessor-definitions1
412 (!bootstrap-accessor-definitions1
415 (list (slot-reader-name slot-name))
416 (list (slot-writer-name slot-name))
417 (list (slot-boundp-name slot-name)))))))))))
419 (defun !bootstrap-accessor-definition (class-name accessor-name slot-name type)
420 (multiple-value-bind (accessor-class make-method-function arglist specls doc)
422 (reader (values 'standard-reader-method
423 #'make-std-reader-method-function
426 "automatically generated reader method"))
427 (writer (values 'standard-writer-method
428 #'make-std-writer-method-function
429 (list 'new-value class-name)
431 "automatically generated writer method"))
432 (boundp (values 'standard-boundp-method
433 #'make-std-boundp-method-function
436 "automatically generated boundp method")))
437 (let ((gf (ensure-generic-function accessor-name)))
438 (if (find specls (early-gf-methods gf)
439 :key #'early-method-specializers
441 (unless (assoc accessor-name *!generic-function-fixups*
445 (make-a-method accessor-class
448 (funcall make-method-function
449 class-name slot-name)
453 (defun !bootstrap-accessor-definitions1 (class-name
458 (flet ((do-reader-definition (reader)
459 (!bootstrap-accessor-definition class-name
463 (do-writer-definition (writer)
464 (!bootstrap-accessor-definition class-name
468 (do-boundp-definition (boundp)
469 (!bootstrap-accessor-definition class-name
473 (dolist (reader readers) (do-reader-definition reader))
474 (dolist (writer writers) (do-writer-definition writer))
475 (dolist (boundp boundps) (do-boundp-definition boundp))))
477 (defun !bootstrap-class-predicates (early-p)
478 (let ((*early-p* early-p))
479 (dolist (definition *early-class-definitions*)
480 (let* ((name (ecd-class-name definition))
481 (class (find-class name)))
482 (setf (find-class-predicate name)
483 (make-class-predicate class (class-predicate-name class)))))))
485 (defun !bootstrap-built-in-classes ()
487 ;; First make sure that all the supers listed in
488 ;; *BUILT-IN-CLASS-LATTICE* are themselves defined by
489 ;; *BUILT-IN-CLASS-LATTICE*. This is just to check for typos and
490 ;; other sorts of brainos.
491 (dolist (e *built-in-classes*)
492 (dolist (super (cadr e))
493 (unless (or (eq super t)
494 (assq super *built-in-classes*))
495 (error "in *BUILT-IN-CLASSES*: ~S has ~S as a super,~%~
496 but ~S is not itself a class in *BUILT-IN-CLASSES*."
497 (car e) super super))))
499 ;; In the first pass, we create a skeletal object to be bound to the
501 (let* ((built-in-class (find-class 'built-in-class))
502 (built-in-class-wrapper (class-wrapper built-in-class)))
503 (dolist (e *built-in-classes*)
504 (let ((class (allocate-standard-instance built-in-class-wrapper)))
505 (setf (find-class (car e)) class))))
507 ;; In the second pass, we initialize the class objects.
508 (let ((class-eq-wrapper (class-wrapper (find-class 'class-eq-specializer))))
509 (dolist (e *built-in-classes*)
510 (destructuring-bind (name supers subs cpl prototype) e
511 (let* ((class (find-class name))
512 (lclass (find-classoid name))
513 (wrapper (classoid-layout lclass)))
514 (set (get-built-in-class-symbol name) class)
515 (set (get-built-in-wrapper-symbol name) wrapper)
516 (setf (classoid-pcl-class lclass) class)
518 (!bootstrap-initialize-class 'built-in-class class
519 name class-eq-wrapper nil
522 wrapper prototype)))))
524 (dolist (e *built-in-classes*)
525 (let* ((name (car e))
526 (class (find-class name)))
527 (setf (find-class-predicate name)
528 (make-class-predicate class (class-predicate-name class))))))
530 (defmacro wrapper-of-macro (x)
534 (wrapper-class* (wrapper-of-macro x)))
536 ;;; FIXME: We probably don't need both WRAPPER-OF and WRAPPER-OF-MACRO.
537 #-sb-fluid (declaim (inline wrapper-of))
538 (defun wrapper-of (x)
539 (wrapper-of-macro x))
541 (defun eval-form (form)
542 (lambda () (eval form)))
544 (defun ensure-non-standard-class (name &optional existing-class)
546 ((ensure (metaclass &optional (slots nil slotsp))
548 (mapcar #'classoid-name (classoid-direct-superclasses
549 (find-classoid name)))))
551 (ensure-class-using-class existing-class name
552 :metaclass metaclass :name name
553 :direct-superclasses supers
555 (ensure-class-using-class existing-class name
556 :metaclass metaclass :name name
557 :direct-superclasses supers))))
558 (slot-initargs-from-structure-slotd (slotd)
559 (let ((accessor (structure-slotd-accessor-symbol slotd)))
560 `(:name ,(structure-slotd-name slotd)
561 :defstruct-accessor-symbol ,accessor
562 ,@(when (fboundp accessor)
563 `(:internal-reader-function
564 ,(structure-slotd-reader-function slotd)
565 :internal-writer-function
566 ,(structure-slotd-writer-function name slotd)))
567 :type ,(or (structure-slotd-type slotd) t)
568 :initform ,(structure-slotd-init-form slotd)
569 :initfunction ,(eval-form (structure-slotd-init-form slotd)))))
570 (slot-initargs-from-condition-slot (slot)
571 `(:name ,(condition-slot-name slot)
572 :initargs ,(condition-slot-initargs slot)
573 :readers ,(condition-slot-readers slot)
574 :writers ,(condition-slot-writers slot)
575 ,@(when (condition-slot-initform-p slot)
576 (let ((form-or-fun (condition-slot-initform slot)))
577 (if (functionp form-or-fun)
578 `(:initfunction ,form-or-fun)
579 `(:initform ,form-or-fun
580 :initfunction ,(lambda () form-or-fun)))))
581 :allocation (condition-slot-allocation slot)
582 :documentation (condition-slot-documentation slot))))
583 (cond ((structure-type-p name)
584 (ensure 'structure-class
585 (mapcar #'slot-initargs-from-structure-slotd
586 (structure-type-slot-description-list name))))
587 ((condition-type-p name)
588 (ensure 'condition-class
589 (mapcar #'slot-initargs-from-condition-slot
590 (condition-classoid-slots (find-classoid name)))))
592 (error "~@<~S is not the name of a class.~@:>" name)))))
594 (defun maybe-reinitialize-structure-class (classoid)
595 (let ((class (classoid-pcl-class classoid)))
597 (ensure-non-standard-class (class-name class) class))))
599 (pushnew 'maybe-reinitialize-structure-class sb-kernel::*defstruct-hooks*)
601 (defun make-class-predicate (class name)
602 (let* ((gf (ensure-generic-function name))
603 (mlist (if (eq *boot-state* 'complete)
604 (generic-function-methods gf)
605 (early-gf-methods gf))))
607 (unless (eq class *the-class-t*)
608 (let* ((default-method-function #'constantly-nil)
609 (default-method-initargs (list :function
610 default-method-function))
611 (default-method (make-a-method
616 default-method-initargs
617 "class predicate default method")))
618 (setf (method-function-get default-method-function :constant-value)
620 (add-method gf default-method)))
621 (let* ((class-method-function #'constantly-t)
622 (class-method-initargs (list :function
623 class-method-function))
624 (class-method (make-a-method 'standard-method
628 class-method-initargs
629 "class predicate class method")))
630 (setf (method-function-get class-method-function :constant-value) t)
631 (add-method gf class-method)))
634 ;;; Set the inherits from CPL, and register the layout. This actually
635 ;;; installs the class in the Lisp type system.
636 (defun update-lisp-class-layout (class layout)
637 (let ((lclass (layout-classoid layout)))
638 (unless (eq (classoid-layout lclass) layout)
639 (setf (layout-inherits layout)
640 (order-layout-inherits
641 (map 'simple-vector #'class-wrapper
642 (reverse (rest (class-precedence-list class))))))
643 (register-layout layout :invalidate t)
645 ;; Subclasses of formerly forward-referenced-class may be
646 ;; unknown to CL:FIND-CLASS and also anonymous. This
647 ;; functionality moved here from (SETF FIND-CLASS).
648 (let ((name (class-name class)))
649 (setf (find-classoid name) lclass
650 (classoid-name lclass) name)))))
652 (defun set-class-type-translation (class name)
653 (let ((classoid (find-classoid name nil)))
657 (let ((translation (built-in-classoid-translation classoid)))
660 (aver (ctype-p translation))
661 (setf (info :type :translator class)
662 (lambda (spec) (declare (ignore spec)) translation)))
664 (setf (info :type :translator class)
665 (lambda (spec) (declare (ignore spec)) classoid))))))
667 (setf (info :type :translator class)
668 (lambda (spec) (declare (ignore spec)) classoid))))))
670 (clrhash *find-class*)
671 (!bootstrap-meta-braid)
672 (!bootstrap-accessor-definitions t)
673 (!bootstrap-class-predicates t)
674 (!bootstrap-accessor-definitions nil)
675 (!bootstrap-class-predicates nil)
676 (!bootstrap-built-in-classes)
678 (dohash (name x *find-class*)
679 (let* ((class (find-class-from-cell name x))
680 (layout (class-wrapper class))
681 (lclass (layout-classoid layout))
682 (lclass-pcl-class (classoid-pcl-class lclass))
683 (olclass (find-classoid name nil)))
685 (aver (eq class lclass-pcl-class))
686 (setf (classoid-pcl-class lclass) class))
688 (update-lisp-class-layout class layout)
691 (aver (eq lclass olclass)))
693 (setf (find-classoid name) lclass)))
695 (set-class-type-translation class name)))
697 (setq *boot-state* 'braid)
699 (defmethod no-applicable-method (generic-function &rest args)
700 (error "~@<There is no applicable method for the generic function ~2I~_~S~
701 ~I~_when called with arguments ~2I~_~S.~:>"
705 (defmethod no-next-method ((generic-function standard-generic-function)
706 (method standard-method) &rest args)
707 (error "~@<There is no next method for the generic function ~2I~_~S~
708 ~I~_when called from method ~2I~_~S~I~_with arguments ~2I~_~S.~:>"
713 ;;; An extension to the ANSI standard: in the presence of e.g. a
714 ;;; :BEFORE method, it would seem that going through
715 ;;; NO-APPLICABLE-METHOD is prohibited, as in fact there is an
716 ;;; applicable method. -- CSR, 2002-11-15
717 (defmethod no-primary-method (generic-function &rest args)
718 (error "~@<There is no primary method for the generic function ~2I~_~S~
719 ~I~_when called with arguments ~2I~_~S.~:>"