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 ;;;; BOOTSTRAP-META-BRAID
91 ;;;; This function builds the base metabraid from the early class definitions.
93 (defmacro !initial-classes-and-wrappers (&rest classes)
95 ,@(mapcar (lambda (class)
96 (let ((wr (format-symbol *pcl-package* "~A-WRAPPER" class)))
97 `(setf ,wr ,(if (eq class 'standard-generic-function)
100 (early-class-size ',class)
102 ,class (allocate-standard-instance
103 ,(if (eq class 'standard-generic-function)
104 'funcallable-standard-class-wrapper
105 'standard-class-wrapper))
106 (wrapper-class ,wr) ,class
107 (find-class ',class) ,class)))
110 (defun !bootstrap-meta-braid ()
111 (let* ((*create-classes-from-internal-structure-definitions-p* nil)
112 standard-class-wrapper standard-class
113 funcallable-standard-class-wrapper funcallable-standard-class
114 slot-class-wrapper slot-class
115 built-in-class-wrapper built-in-class
116 structure-class-wrapper structure-class
117 condition-class-wrapper condition-class
118 standard-direct-slot-definition-wrapper
119 standard-direct-slot-definition
120 standard-effective-slot-definition-wrapper
121 standard-effective-slot-definition
122 class-eq-specializer-wrapper class-eq-specializer
123 standard-generic-function-wrapper standard-generic-function)
124 (!initial-classes-and-wrappers
125 standard-class funcallable-standard-class
126 slot-class built-in-class structure-class condition-class
127 standard-direct-slot-definition standard-effective-slot-definition
128 class-eq-specializer standard-generic-function)
129 ;; First, make a class metaobject for each of the early classes. For
130 ;; each metaobject we also set its wrapper. Except for the class T,
131 ;; the wrapper is always that of STANDARD-CLASS.
132 (dolist (definition *early-class-definitions*)
133 (let* ((name (ecd-class-name definition))
134 (meta (ecd-metaclass definition))
136 (slot-class slot-class-wrapper)
137 (standard-class standard-class-wrapper)
138 (funcallable-standard-class
139 funcallable-standard-class-wrapper)
140 (built-in-class built-in-class-wrapper)
141 (structure-class structure-class-wrapper)
142 (condition-class condition-class-wrapper)))
143 (class (or (find-class name nil)
144 (allocate-standard-instance wrapper))))
145 (setf (find-class name) class)))
146 (dolist (definition *early-class-definitions*)
147 (let ((name (ecd-class-name definition))
148 (meta (ecd-metaclass definition))
149 (source (ecd-source-location definition))
150 (direct-supers (ecd-superclass-names definition))
151 (direct-slots (ecd-canonical-slots definition))
152 (other-initargs (ecd-other-initargs definition)))
153 (let ((direct-default-initargs
154 (getf other-initargs :direct-default-initargs)))
155 (multiple-value-bind (slots cpl default-initargs direct-subclasses)
156 (early-collect-inheritance name)
157 (let* ((class (find-class name))
158 (wrapper (cond ((eq class slot-class)
160 ((eq class standard-class)
161 standard-class-wrapper)
162 ((eq class funcallable-standard-class)
163 funcallable-standard-class-wrapper)
164 ((eq class standard-direct-slot-definition)
165 standard-direct-slot-definition-wrapper)
167 standard-effective-slot-definition)
168 standard-effective-slot-definition-wrapper)
169 ((eq class built-in-class)
170 built-in-class-wrapper)
171 ((eq class structure-class)
172 structure-class-wrapper)
173 ((eq class condition-class)
174 condition-class-wrapper)
175 ((eq class class-eq-specializer)
176 class-eq-specializer-wrapper)
177 ((eq class standard-generic-function)
178 standard-generic-function-wrapper)
180 (boot-make-wrapper (length slots) name))))
182 (when (eq name t) (setq *the-wrapper-of-t* wrapper))
183 (set (make-class-symbol name) class)
185 (unless (eq (getf slot :allocation :instance) :instance)
186 (error "Slot allocation ~S is not supported in bootstrap."
187 (getf slot :allocation))))
189 (when (typep wrapper 'wrapper)
190 (setf (wrapper-instance-slots-layout wrapper)
191 (mapcar (lambda (slotd)
192 ;; T is the slot-definition-type.
193 (cons (canonical-slot-name slotd) t))
195 (setf (wrapper-class-slots wrapper)
198 (setq proto (if (eq meta 'funcallable-standard-class)
199 (allocate-standard-funcallable-instance wrapper)
200 (allocate-standard-instance wrapper)))
203 (!bootstrap-make-slot-definitions
204 name class direct-slots
205 standard-direct-slot-definition-wrapper nil))
207 (!bootstrap-make-slot-definitions
209 standard-effective-slot-definition-wrapper t))
211 (setf (layout-slot-table wrapper) (make-slot-table class slots t))
214 ((standard-class funcallable-standard-class)
215 (!bootstrap-initialize-class
217 class name class-eq-specializer-wrapper source
218 direct-supers direct-subclasses cpl wrapper proto
219 direct-slots slots direct-default-initargs default-initargs))
220 (built-in-class ; *the-class-t*
221 (!bootstrap-initialize-class
223 class name class-eq-specializer-wrapper source
224 direct-supers direct-subclasses cpl wrapper proto))
225 (slot-class ; *the-class-slot-object*
226 (!bootstrap-initialize-class
228 class name class-eq-specializer-wrapper source
229 direct-supers direct-subclasses cpl wrapper proto))
230 (structure-class ; *the-class-structure-object*
231 (!bootstrap-initialize-class
233 class name class-eq-specializer-wrapper source
234 direct-supers direct-subclasses cpl wrapper))
236 (!bootstrap-initialize-class
238 class name class-eq-specializer-wrapper source
239 direct-supers direct-subclasses cpl wrapper))))))))
241 (setq **standard-method-classes**
242 (mapcar (lambda (name)
243 (symbol-value (make-class-symbol name)))
244 *standard-method-class-names*))
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 nil)
257 (set-slot 'type-name '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 'safe-p nil)
276 (set-slot '%type (if (eq class (find-class t))
278 ;; FIXME: Could this just be CLASS instead
279 ;; of `(CLASS ,CLASS)? If not, why not?
280 ;; (See also similar expression in
281 ;; SHARED-INITIALIZE :BEFORE (CLASS).)
283 (set-slot 'class-eq-specializer
284 (let ((spec (allocate-standard-instance class-eq-wrapper)))
285 (!bootstrap-set-slot 'class-eq-specializer spec '%type
287 (!bootstrap-set-slot 'class-eq-specializer spec 'object
290 (set-slot '%class-precedence-list (classes cpl))
291 (set-slot 'cpl-available-p t)
292 (set-slot 'can-precede-list (classes (cdr cpl)))
293 (set-slot 'incompatible-superclass-list nil)
294 (set-slot 'direct-superclasses (classes direct-supers))
295 (set-slot 'direct-subclasses (classes direct-subclasses))
296 (set-slot 'direct-methods (cons nil nil))
297 (set-slot 'wrapper wrapper)
298 (set-slot '%documentation nil)
300 `(,@(and direct-default-initargs
301 `(direct-default-initargs ,direct-default-initargs))
302 ,@(and default-initargs
303 `(default-initargs ,default-initargs))))
304 (when (memq metaclass-name '(standard-class funcallable-standard-class
305 structure-class condition-class
307 (set-slot 'direct-slots direct-slots)
308 (set-slot 'slots slots)
309 (setf (layout-slot-table wrapper)
310 (make-slot-table class slots
311 (member metaclass-name
312 '(standard-class funcallable-standard-class)))))
314 ;; For all direct superclasses SUPER of CLASS, make sure CLASS is
315 ;; a direct subclass of SUPER. Note that METACLASS-NAME doesn't
316 ;; matter here for the slot DIRECT-SUBCLASSES, since every class
317 ;; inherits the slot from class CLASS.
318 (dolist (super direct-supers)
319 (let* ((super (find-class super))
320 (subclasses (!bootstrap-get-slot metaclass-name super
321 'direct-subclasses)))
322 (cond ((eq +slot-unbound+ subclasses)
323 (!bootstrap-set-slot metaclass-name super 'direct-subclasses
325 ((not (memq class subclasses))
326 (!bootstrap-set-slot metaclass-name super 'direct-subclasses
327 (cons class subclasses))))))
331 (let ((constructor-sym '|STRUCTURE-OBJECT class constructor|))
332 (set-slot 'defstruct-form
333 `(defstruct (structure-object (:constructor
336 (set-slot 'defstruct-constructor constructor-sym)
337 (set-slot 'from-defclass-p t)
338 (set-slot 'plist nil)
339 (set-slot 'prototype (funcall constructor-sym))))
341 (set-slot 'prototype (make-condition name)))
344 (if proto-p proto (allocate-standard-instance wrapper)))))
347 (defun !bootstrap-make-slot-definitions (name class slots wrapper effective-p)
349 (mapcar (lambda (slot)
351 (!bootstrap-make-slot-definition
352 name class slot wrapper effective-p index))
355 (defun !bootstrap-make-slot-definition
356 (name class slot wrapper effective-p index)
357 (let* ((slotd-class-name (if effective-p
358 'standard-effective-slot-definition
359 'standard-direct-slot-definition))
360 (slotd (allocate-standard-instance wrapper))
361 (slot-name (getf slot :name)))
362 (flet ((get-val (name) (getf slot name))
364 (!bootstrap-set-slot slotd-class-name slotd name val)))
365 (set-val 'name slot-name)
366 (set-val 'initform (get-val :initform))
367 (set-val 'initfunction (get-val :initfunction))
368 (set-val 'initargs (get-val :initargs))
369 (set-val 'readers (get-val :readers))
370 (set-val 'writers (get-val :writers))
371 (set-val 'allocation :instance)
372 (set-val '%type (or (get-val :type) t))
373 (set-val '%documentation (or (get-val :documentation) ""))
374 (set-val '%class class)
376 (set-val 'location index)
377 (set-val 'accessor-flags 7)
382 (make-optimized-std-reader-method-function nil nil slot-name index)
384 (make-optimized-std-writer-method-function nil nil slot-name index)
386 (make-optimized-std-boundp-method-function nil nil slot-name index))))
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 (ecd-source-location definition))))))))))
414 (defun !bootstrap-accessor-definition (class-name accessor-name slot-name type source-location)
415 (multiple-value-bind (accessor-class make-method-function arglist specls doc)
417 (reader (values 'standard-reader-method
418 #'make-std-reader-method-function
421 "automatically generated reader method"))
422 (writer (values 'standard-writer-method
423 #'make-std-writer-method-function
424 (list 'new-value class-name)
426 "automatically generated writer method"))
427 (boundp (values 'standard-boundp-method
428 #'make-std-boundp-method-function
431 "automatically generated boundp method")))
432 (let ((gf (ensure-generic-function accessor-name :lambda-list arglist)))
433 (if (find specls (early-gf-methods gf)
434 :key #'early-method-specializers
436 (unless (assoc accessor-name *!generic-function-fixups*
440 (make-a-method accessor-class
443 (funcall make-method-function
444 class-name slot-name)
447 :object-class class-name
448 :method-class-function (constantly (find-class accessor-class))
449 :definition-source source-location))))))
451 (defun !bootstrap-accessor-definitions1 (class-name
457 (flet ((do-reader-definition (reader)
458 (!bootstrap-accessor-definition class-name
463 (do-writer-definition (writer)
464 (!bootstrap-accessor-definition class-name
469 (do-boundp-definition (boundp)
470 (!bootstrap-accessor-definition class-name
475 (dolist (reader readers) (do-reader-definition reader))
476 (dolist (writer writers) (do-writer-definition writer))
477 (dolist (boundp boundps) (do-boundp-definition boundp))))
479 ;;; FIXME: find a better name.
480 (defun !bootstrap-class-predicates (early-p)
481 (let ((*early-p* early-p))
482 (dolist (ecp *early-class-predicates*)
483 (let ((class-name (car ecp))
484 (predicate-name (cadr ecp)))
485 (make-class-predicate (find-class class-name) predicate-name)))))
487 (defun !bootstrap-built-in-classes ()
489 ;; First make sure that all the supers listed in
490 ;; *BUILT-IN-CLASS-LATTICE* are themselves defined by
491 ;; *BUILT-IN-CLASS-LATTICE*. This is just to check for typos and
492 ;; other sorts of brainos.
493 (dolist (e *built-in-classes*)
494 (dolist (super (cadr e))
495 (unless (or (eq super t)
496 (assq super *built-in-classes*))
497 (error "in *BUILT-IN-CLASSES*: ~S has ~S as a super,~%~
498 but ~S is not itself a class in *BUILT-IN-CLASSES*."
499 (car e) super super))))
501 ;; In the first pass, we create a skeletal object to be bound to the
503 (let* ((built-in-class (find-class 'built-in-class))
504 (built-in-class-wrapper (class-wrapper built-in-class)))
505 (dolist (e *built-in-classes*)
506 (let ((class (allocate-standard-instance built-in-class-wrapper)))
507 (setf (find-class (car e)) class))))
509 ;; In the second pass, we initialize the class objects.
510 (let ((class-eq-wrapper (class-wrapper (find-class 'class-eq-specializer))))
511 (dolist (e *built-in-classes*)
512 (destructuring-bind (name supers subs cpl prototype) e
513 (let* ((class (find-class name))
514 (lclass (find-classoid name))
515 (wrapper (classoid-layout lclass)))
516 (set (get-built-in-class-symbol name) class)
517 (set (get-built-in-wrapper-symbol name) wrapper)
518 (setf (classoid-pcl-class lclass) class)
520 (!bootstrap-initialize-class 'built-in-class class
521 name class-eq-wrapper nil
524 wrapper prototype))))))
526 #-sb-fluid (declaim (inline wrapper-of))
527 (defun wrapper-of (x)
531 (wrapper-class* (wrapper-of x)))
533 (defun eval-form (form)
534 (lambda () (eval form)))
536 (defun ensure-non-standard-class (name classoid &optional existing-class)
538 ((ensure (metaclass &optional (slots nil slotsp))
539 (let ((supers (mapcar #'classoid-name (classoid-direct-superclasses classoid))))
541 (ensure-class-using-class existing-class name
542 :metaclass metaclass :name name
543 :direct-superclasses supers
545 (ensure-class-using-class existing-class name
546 :metaclass metaclass :name name
547 :direct-superclasses supers))))
548 (slot-initargs-from-structure-slotd (slotd)
549 (let ((accessor (structure-slotd-accessor-symbol slotd)))
550 `(:name ,(structure-slotd-name slotd)
551 :defstruct-accessor-symbol ,accessor
552 :internal-reader-function ,(structure-slotd-reader-function slotd)
553 :internal-writer-function ,(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 classoid))))
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) classoid class))
585 ((eq 'complete **boot-state**)
586 (ensure-non-standard-class (classoid-name classoid) 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 (early-gf-methods gf)
596 (generic-function-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 ;; Protected by *world-lock* in callers.
626 (let ((classoid (layout-classoid layout))
627 (olayout (class-wrapper class)))
628 (unless (eq (classoid-layout classoid) layout)
629 (setf (layout-inherits layout)
630 (order-layout-inherits
631 (map 'simple-vector #'class-wrapper
632 (reverse (rest (class-precedence-list class))))))
633 (register-layout layout :invalidate t)
635 ;; FIXME: I don't think this should be necessary, but without it
636 ;; we are unable to compile (TYPEP foo '<class-name>) in the
637 ;; same file as the class is defined. If we had environments,
638 ;; then I think the classsoid whould only be associated with the
639 ;; name in that environment... Alternatively, fix the compiler
640 ;; so that TYPEP foo '<class-name> is slow but compileable.
641 (let ((name (class-name class)))
642 (when (and name (symbolp name) (eq name (classoid-name classoid)))
643 (setf (find-classoid name) classoid))))))
645 (defun %set-class-type-translation (class classoid)
646 (when (not (typep classoid 'classoid))
647 (setq classoid (find-classoid classoid nil)))
651 (let ((translation (built-in-classoid-translation classoid)))
654 (aver (ctype-p translation))
655 (setf (info :type :translator class)
656 (lambda (spec) (declare (ignore spec)) translation)))
658 (setf (info :type :translator class)
659 (lambda (spec) (declare (ignore spec)) classoid))))))
661 (setf (info :type :translator class)
662 (lambda (spec) (declare (ignore spec)) classoid)))))
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) sb-kernel::*classoid-cells*)
672 (when (classoid-cell-pcl-class x)
673 (let* ((class (find-class-from-cell name x))
674 (layout (class-wrapper class))
675 (lclass (layout-classoid layout))
676 (lclass-pcl-class (classoid-pcl-class lclass))
677 (olclass (find-classoid name nil)))
679 (aver (eq class lclass-pcl-class))
680 (setf (classoid-pcl-class lclass) class))
682 (%update-lisp-class-layout class layout)
685 (aver (eq lclass olclass)))
687 (setf (find-classoid name) lclass)))
689 (%set-class-type-translation class name))))
691 (setq **boot-state** 'braid)
693 (defmethod no-applicable-method (generic-function &rest args)
694 (error "~@<There is no applicable method for the generic function ~2I~_~S~
695 ~I~_when called with arguments ~2I~_~S.~:>"
699 (defmethod no-next-method ((generic-function standard-generic-function)
700 (method standard-method) &rest args)
701 (error "~@<There is no next method for the generic function ~2I~_~S~
702 ~I~_when called from method ~2I~_~S~I~_with arguments ~2I~_~S.~:>"
707 ;;; An extension to the ANSI standard: in the presence of e.g. a
708 ;;; :BEFORE method, it would seem that going through
709 ;;; NO-APPLICABLE-METHOD is prohibited, as in fact there is an
710 ;;; applicable method. -- CSR, 2002-11-15
711 (define-condition no-primary-method (reference-condition error)
712 ((generic-function :initarg :generic-function :reader no-primary-method-generic-function)
713 (args :initarg :args :reader no-primary-method-args))
716 (format s "~@<There is no primary method for the generic function ~2I~_~S~
717 ~I~_when called with arguments ~2I~_~S.~:>"
718 (no-primary-method-generic-function c)
719 (no-primary-method-args c))))
720 (:default-initargs :references (list '(:ansi-cl :section (7 6 6 2)))))
721 (defmethod no-primary-method (generic-function &rest args)
722 (error 'no-primary-method :generic-function generic-function :args args))
724 (defmethod invalid-qualifiers ((gf generic-function)
727 (let ((qualifiers (method-qualifiers method)))
729 ((cdr qualifiers) "has too many qualifiers")
730 (t (aver (not (member (car qualifiers)
731 '(:around :before :after))))
732 "has an invalid qualifier"))))
733 (invalid-method-error
735 "The method ~S on ~S ~A.~%~
736 Standard method combination requires all methods to have one~%~
737 of the single qualifiers :AROUND, :BEFORE and :AFTER or to~%~
738 have no qualifier at all."