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 #'canonical-slot-name slots))
192 (setf (wrapper-class-slots wrapper)
195 (setq proto (if (eq meta 'funcallable-standard-class)
196 (allocate-standard-funcallable-instance wrapper)
197 (allocate-standard-instance wrapper)))
200 (!bootstrap-make-slot-definitions
201 name class direct-slots
202 standard-direct-slot-definition-wrapper nil))
204 (!bootstrap-make-slot-definitions
206 standard-effective-slot-definition-wrapper t))
208 (setf (layout-slot-table wrapper) (make-slot-table class slots t))
211 ((standard-class funcallable-standard-class)
212 (!bootstrap-initialize-class
214 class name class-eq-specializer-wrapper source
215 direct-supers direct-subclasses cpl wrapper proto
216 direct-slots slots direct-default-initargs default-initargs))
217 (built-in-class ; *the-class-t*
218 (!bootstrap-initialize-class
220 class name class-eq-specializer-wrapper source
221 direct-supers direct-subclasses cpl wrapper proto))
222 (slot-class ; *the-class-slot-object*
223 (!bootstrap-initialize-class
225 class name class-eq-specializer-wrapper source
226 direct-supers direct-subclasses cpl wrapper proto))
227 (structure-class ; *the-class-structure-object*
228 (!bootstrap-initialize-class
230 class name class-eq-specializer-wrapper source
231 direct-supers direct-subclasses cpl wrapper))
233 (!bootstrap-initialize-class
235 class name class-eq-specializer-wrapper source
236 direct-supers direct-subclasses cpl wrapper))))))))
238 (let* ((smc-class (find-class 'standard-method-combination))
239 (smc-wrapper (!bootstrap-get-slot 'standard-class
242 (smc (allocate-standard-instance smc-wrapper)))
243 (flet ((set-slot (name value)
244 (!bootstrap-set-slot 'standard-method-combination
248 (set-slot 'source nil)
249 (set-slot 'type-name 'standard)
250 (set-slot '%documentation "The standard method combination.")
251 (set-slot 'options ()))
252 (setq *standard-method-combination* smc))))
254 ;;; Initialize a class metaobject.
255 (defun !bootstrap-initialize-class
256 (metaclass-name class name
257 class-eq-wrapper source direct-supers direct-subclasses cpl wrapper
260 direct-slots slots direct-default-initargs default-initargs)
261 (flet ((classes (names) (mapcar #'find-class names))
262 (set-slot (slot-name value)
263 (!bootstrap-set-slot metaclass-name class slot-name value)))
264 (set-slot 'name name)
265 (set-slot 'finalized-p t)
266 (set-slot 'source source)
267 (set-slot 'safe-p nil)
268 (set-slot '%type (if (eq class (find-class t))
270 ;; FIXME: Could this just be CLASS instead
271 ;; of `(CLASS ,CLASS)? If not, why not?
272 ;; (See also similar expression in
273 ;; SHARED-INITIALIZE :BEFORE (CLASS).)
275 (set-slot 'class-eq-specializer
276 (let ((spec (allocate-standard-instance class-eq-wrapper)))
277 (!bootstrap-set-slot 'class-eq-specializer spec '%type
279 (!bootstrap-set-slot 'class-eq-specializer spec 'object
282 (set-slot '%class-precedence-list (classes cpl))
283 (set-slot 'cpl-available-p t)
284 (set-slot 'can-precede-list (classes (cdr cpl)))
285 (set-slot 'incompatible-superclass-list nil)
286 (set-slot 'direct-superclasses (classes direct-supers))
287 (set-slot 'direct-subclasses (classes direct-subclasses))
288 (set-slot 'direct-methods (cons nil nil))
289 (set-slot 'wrapper wrapper)
290 (set-slot '%documentation nil)
292 `(,@(and direct-default-initargs
293 `(direct-default-initargs ,direct-default-initargs))
294 ,@(and default-initargs
295 `(default-initargs ,default-initargs))))
296 (when (memq metaclass-name '(standard-class funcallable-standard-class
297 structure-class condition-class
299 (set-slot 'direct-slots direct-slots)
300 (set-slot 'slots slots)
301 (setf (layout-slot-table wrapper)
302 (make-slot-table class slots
303 (member metaclass-name
304 '(standard-class funcallable-standard-class)))))
306 ;; For all direct superclasses SUPER of CLASS, make sure CLASS is
307 ;; a direct subclass of SUPER. Note that METACLASS-NAME doesn't
308 ;; matter here for the slot DIRECT-SUBCLASSES, since every class
309 ;; inherits the slot from class CLASS.
310 (dolist (super direct-supers)
311 (let* ((super (find-class super))
312 (subclasses (!bootstrap-get-slot metaclass-name super
313 'direct-subclasses)))
314 (cond ((eq +slot-unbound+ subclasses)
315 (!bootstrap-set-slot metaclass-name super 'direct-subclasses
317 ((not (memq class subclasses))
318 (!bootstrap-set-slot metaclass-name super 'direct-subclasses
319 (cons class subclasses))))))
323 (let ((constructor-sym '|STRUCTURE-OBJECT class constructor|))
324 (set-slot 'defstruct-form
325 `(defstruct (structure-object (:constructor
328 (set-slot 'defstruct-constructor constructor-sym)
329 (set-slot 'from-defclass-p t)
330 (set-slot 'plist nil)
331 (set-slot 'prototype (funcall constructor-sym))))
333 (set-slot 'prototype (make-condition name)))
336 (if proto-p proto (allocate-standard-instance wrapper)))))
339 (defun !bootstrap-make-slot-definitions (name class slots wrapper effective-p)
341 (mapcar (lambda (slot)
343 (!bootstrap-make-slot-definition
344 name class slot wrapper effective-p index))
347 (defun !bootstrap-make-slot-definition
348 (name class slot wrapper effective-p index)
349 (let* ((slotd-class-name (if effective-p
350 'standard-effective-slot-definition
351 'standard-direct-slot-definition))
352 (slotd (allocate-standard-instance wrapper))
353 (slot-name (getf slot :name)))
354 (flet ((get-val (name) (getf slot name))
356 (!bootstrap-set-slot slotd-class-name slotd name val)))
357 (set-val 'name slot-name)
358 (set-val 'initform (get-val :initform))
359 (set-val 'initfunction (get-val :initfunction))
360 (set-val 'initargs (get-val :initargs))
361 (set-val 'readers (get-val :readers))
362 (set-val 'writers (get-val :writers))
363 (set-val 'allocation :instance)
364 (set-val '%type (or (get-val :type) t))
365 (set-val '%type-check-function (get-val 'type-check-function))
366 (set-val '%documentation (or (get-val :documentation) ""))
367 (set-val '%class class)
369 (set-val 'location index)
371 (set-val 'reader-function (make-optimized-std-reader-method-function
372 fsc-p nil slot-name index))
373 (set-val 'writer-function (make-optimized-std-writer-method-function
374 fsc-p nil slot-name index))
375 (set-val 'boundp-function (make-optimized-std-boundp-method-function
376 fsc-p nil slot-name index)))
377 (set-val 'accessor-flags 7))
378 (when (and (eq name 'standard-class)
379 (eq slot-name 'slots) effective-p)
380 (setq *the-eslotd-standard-class-slots* slotd))
381 (when (and (eq name 'funcallable-standard-class)
382 (eq slot-name 'slots) effective-p)
383 (setq *the-eslotd-funcallable-standard-class-slots* slotd))
386 (defun !bootstrap-accessor-definitions (early-p)
387 (let ((*early-p* early-p))
388 (dolist (definition *early-class-definitions*)
389 (let ((name (ecd-class-name definition))
390 (meta (ecd-metaclass definition)))
391 (unless (eq meta 'built-in-class)
392 (let ((direct-slots (ecd-canonical-slots definition)))
393 (dolist (slotd direct-slots)
394 (let ((slot-name (getf slotd :name))
395 (readers (getf slotd :readers))
396 (writers (getf slotd :writers)))
397 (!bootstrap-accessor-definitions1
403 (ecd-source-location definition))))))))))
405 (defun !bootstrap-accessor-definition (class-name accessor-name slot-name type source-location)
406 (multiple-value-bind (accessor-class make-method-function arglist specls doc)
408 (reader (values 'standard-reader-method
409 #'make-std-reader-method-function
412 "automatically generated reader method"))
413 (writer (values 'standard-writer-method
414 #'make-std-writer-method-function
415 (list 'new-value class-name)
417 "automatically generated writer method"))
418 (boundp (values 'standard-boundp-method
419 #'make-std-boundp-method-function
422 "automatically generated boundp method")))
423 (let ((gf (ensure-generic-function accessor-name :lambda-list arglist)))
424 (if (find specls (early-gf-methods gf)
425 :key #'early-method-specializers
427 (unless (assoc accessor-name *!generic-function-fixups*
431 (make-a-method accessor-class
434 (funcall make-method-function
435 class-name slot-name)
438 :object-class class-name
439 :method-class-function (constantly (find-class accessor-class))
440 :definition-source source-location))))))
442 (defun !bootstrap-accessor-definitions1 (class-name
448 (flet ((do-reader-definition (reader)
449 (!bootstrap-accessor-definition class-name
454 (do-writer-definition (writer)
455 (!bootstrap-accessor-definition class-name
460 (do-boundp-definition (boundp)
461 (!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 #-sb-fluid (declaim (inline wrapper-of))
518 (defun wrapper-of (x)
522 (wrapper-class* (wrapper-of x)))
524 (defun eval-form (form)
525 (lambda () (eval form)))
527 (defun ensure-non-standard-class (name classoid &optional existing-class)
529 ((ensure (metaclass &optional (slots nil slotsp))
530 (let ((supers (mapcar #'classoid-name (classoid-direct-superclasses classoid))))
532 (ensure-class-using-class existing-class name
533 :metaclass metaclass :name name
534 :direct-superclasses supers
536 (ensure-class-using-class existing-class name
537 :metaclass metaclass :name name
538 :direct-superclasses supers))))
539 (slot-initargs-from-structure-slotd (slotd)
540 (let ((accessor (structure-slotd-accessor-symbol slotd)))
541 `(:name ,(structure-slotd-name slotd)
542 :defstruct-accessor-symbol ,accessor
543 ,@(when (fboundp accessor)
544 `(:internal-reader-function
545 ,(structure-slotd-reader-function slotd)
546 :internal-writer-function
547 ,(structure-slotd-writer-function name slotd)))
548 :type ,(or (structure-slotd-type slotd) t)
549 :initform ,(structure-slotd-init-form slotd)
550 :initfunction ,(eval-form (structure-slotd-init-form slotd)))))
551 (slot-initargs-from-condition-slot (slot)
552 `(:name ,(condition-slot-name slot)
553 :initargs ,(condition-slot-initargs slot)
554 :readers ,(condition-slot-readers slot)
555 :writers ,(condition-slot-writers slot)
556 ,@(when (condition-slot-initform-p slot)
557 (let ((form-or-fun (condition-slot-initform slot)))
558 (if (functionp form-or-fun)
559 `(:initfunction ,form-or-fun)
560 `(:initform ,form-or-fun
561 :initfunction ,(lambda () form-or-fun)))))
562 :allocation ,(condition-slot-allocation slot)
563 :documentation ,(condition-slot-documentation slot))))
564 (cond ((structure-type-p name)
565 (ensure 'structure-class
566 (mapcar #'slot-initargs-from-structure-slotd
567 (structure-type-slot-description-list name))))
568 ((condition-type-p name)
569 (ensure 'condition-class
570 (mapcar #'slot-initargs-from-condition-slot
571 (condition-classoid-slots classoid))))
573 (error "~@<~S is not the name of a class.~@:>" name)))))
575 (defun ensure-deffoo-class (classoid)
576 (let ((class (classoid-pcl-class classoid)))
578 (ensure-non-standard-class (class-name class) classoid class))
579 ((eq 'complete *boot-state*)
580 (ensure-non-standard-class (classoid-name classoid) classoid)))))
582 (pushnew 'ensure-deffoo-class sb-kernel::*defstruct-hooks*)
583 (pushnew 'ensure-deffoo-class sb-kernel::*define-condition-hooks*)
585 ;;; FIXME: only needed during bootstrap
586 (defun make-class-predicate (class name)
587 (let* ((gf (ensure-generic-function name :lambda-list '(object)))
588 (mlist (if (eq *boot-state* 'complete)
589 (early-gf-methods gf)
590 (generic-function-methods gf))))
592 (unless (eq class *the-class-t*)
593 (let* ((default-method-function #'constantly-nil)
594 (default-method-initargs (list :function default-method-function
595 'plist '(:constant-value nil)))
596 (default-method (make-a-method
601 default-method-initargs
602 "class predicate default method")))
603 (add-method gf default-method)))
604 (let* ((class-method-function #'constantly-t)
605 (class-method-initargs (list :function class-method-function
606 'plist '(:constant-value t)))
607 (class-method (make-a-method 'standard-method
611 class-method-initargs
612 "class predicate class method")))
613 (add-method gf class-method)))
616 ;;; Set the inherits from CPL, and register the layout. This actually
617 ;;; installs the class in the Lisp type system.
618 (defun %update-lisp-class-layout (class layout)
619 ;; Protected by *world-lock* in callers.
620 (let ((classoid (layout-classoid layout))
621 (olayout (class-wrapper class)))
622 (unless (eq (classoid-layout classoid) layout)
623 (setf (layout-inherits layout)
624 (order-layout-inherits
625 (map 'simple-vector #'class-wrapper
626 (reverse (rest (class-precedence-list class))))))
627 (register-layout layout :invalidate t)
629 ;; FIXME: I don't think this should be necessary, but without it
630 ;; we are unable to compile (TYPEP foo '<class-name>) in the
631 ;; same file as the class is defined. If we had environments,
632 ;; then I think the classsoid whould only be associated with the
633 ;; name in that environment... Alternatively, fix the compiler
634 ;; so that TYPEP foo '<class-name> is slow but compileable.
635 (let ((name (class-name class)))
636 (when (and name (symbolp name) (eq name (classoid-name classoid)))
637 (setf (find-classoid name) classoid))))))
639 (defun %set-class-type-translation (class classoid)
640 (when (not (typep classoid 'classoid))
641 (setq classoid (find-classoid classoid nil)))
645 (let ((translation (built-in-classoid-translation classoid)))
648 (aver (ctype-p translation))
649 (setf (info :type :translator class)
650 (lambda (spec) (declare (ignore spec)) translation)))
652 (setf (info :type :translator class)
653 (lambda (spec) (declare (ignore spec)) classoid))))))
655 (setf (info :type :translator class)
656 (lambda (spec) (declare (ignore spec)) classoid)))))
658 (!bootstrap-meta-braid)
659 (!bootstrap-accessor-definitions t)
660 (!bootstrap-class-predicates t)
661 (!bootstrap-accessor-definitions nil)
662 (!bootstrap-class-predicates nil)
663 (!bootstrap-built-in-classes)
665 (dohash ((name x) sb-kernel::*classoid-cells*)
666 (when (classoid-cell-pcl-class x)
667 (let* ((class (find-class-from-cell name x))
668 (layout (class-wrapper class))
669 (lclass (layout-classoid layout))
670 (lclass-pcl-class (classoid-pcl-class lclass))
671 (olclass (find-classoid name nil)))
673 (aver (eq class lclass-pcl-class))
674 (setf (classoid-pcl-class lclass) class))
676 (%update-lisp-class-layout class layout)
679 (aver (eq lclass olclass)))
681 (setf (find-classoid name) lclass)))
683 (%set-class-type-translation class name))))
685 (setq *boot-state* 'braid)
687 (defmethod no-applicable-method (generic-function &rest args)
688 (error "~@<There is no applicable method for the generic function ~2I~_~S~
689 ~I~_when called with arguments ~2I~_~S.~:>"
693 (defmethod no-next-method ((generic-function standard-generic-function)
694 (method standard-method) &rest args)
695 (error "~@<There is no next method for the generic function ~2I~_~S~
696 ~I~_when called from method ~2I~_~S~I~_with arguments ~2I~_~S.~:>"
701 ;;; An extension to the ANSI standard: in the presence of e.g. a
702 ;;; :BEFORE method, it would seem that going through
703 ;;; NO-APPLICABLE-METHOD is prohibited, as in fact there is an
704 ;;; applicable method. -- CSR, 2002-11-15
705 (define-condition no-primary-method (reference-condition error)
706 ((generic-function :initarg :generic-function :reader no-primary-method-generic-function)
707 (args :initarg :args :reader no-primary-method-args))
710 (format s "~@<There is no primary method for the generic function ~2I~_~S~
711 ~I~_when called with arguments ~2I~_~S.~:>"
712 (no-primary-method-generic-function c)
713 (no-primary-method-args c))))
714 (:default-initargs :references (list '(:ansi-cl :section (7 6 6 2)))))
715 (defmethod no-primary-method (generic-function &rest args)
716 (error 'no-primary-method :generic-function generic-function :args args))
718 (defmethod invalid-qualifiers ((gf generic-function)
721 (let ((qualifiers (method-qualifiers method)))
723 ((cdr qualifiers) "has too many qualifiers")
724 (t (aver (not (member (car qualifiers)
725 '(:around :before :after))))
726 "has an invalid qualifier"))))
727 (invalid-method-error
729 "The method ~S on ~S ~A.~%~
730 Standard method combination requires all methods to have one~%~
731 of the single qualifiers :AROUND, :BEFORE and :AFTER or to~%~
732 have no qualifier at all."