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 (setq **standard-method-classes**
239 (mapcar (lambda (name)
240 (symbol-value (make-class-symbol name)))
241 *standard-method-class-names*))
243 (let* ((smc-class (find-class 'standard-method-combination))
244 (smc-wrapper (!bootstrap-get-slot 'standard-class
247 (smc (allocate-standard-instance smc-wrapper)))
248 (flet ((set-slot (name value)
249 (!bootstrap-set-slot 'standard-method-combination
253 (set-slot 'source nil)
254 (set-slot 'type-name 'standard)
255 (set-slot '%documentation "The standard method combination.")
256 (set-slot 'options ()))
257 (setq *standard-method-combination* smc))))
259 ;;; Initialize a class metaobject.
260 (defun !bootstrap-initialize-class
261 (metaclass-name class name
262 class-eq-wrapper source direct-supers direct-subclasses cpl wrapper
265 direct-slots slots direct-default-initargs default-initargs)
266 (flet ((classes (names) (mapcar #'find-class names))
267 (set-slot (slot-name value)
268 (!bootstrap-set-slot metaclass-name class slot-name value)))
269 (set-slot 'name name)
270 (set-slot 'finalized-p t)
271 (set-slot 'source source)
272 (set-slot 'safe-p nil)
273 (set-slot '%type (if (eq class (find-class t))
275 ;; FIXME: Could this just be CLASS instead
276 ;; of `(CLASS ,CLASS)? If not, why not?
277 ;; (See also similar expression in
278 ;; SHARED-INITIALIZE :BEFORE (CLASS).)
280 (set-slot 'class-eq-specializer
281 (let ((spec (allocate-standard-instance class-eq-wrapper)))
282 (!bootstrap-set-slot 'class-eq-specializer spec '%type
284 (!bootstrap-set-slot 'class-eq-specializer spec 'object
287 (set-slot '%class-precedence-list (classes cpl))
288 (set-slot 'cpl-available-p t)
289 (set-slot 'can-precede-list (classes (cdr cpl)))
290 (set-slot 'incompatible-superclass-list nil)
291 (set-slot 'direct-superclasses (classes direct-supers))
292 (set-slot 'direct-subclasses (classes direct-subclasses))
293 (set-slot 'direct-methods (cons nil nil))
294 (set-slot 'wrapper wrapper)
295 (set-slot '%documentation nil)
297 `(,@(and direct-default-initargs
298 `(direct-default-initargs ,direct-default-initargs))
299 ,@(and default-initargs
300 `(default-initargs ,default-initargs))))
301 (when (memq metaclass-name '(standard-class funcallable-standard-class
302 structure-class condition-class
304 (set-slot 'direct-slots direct-slots)
305 (set-slot 'slots slots)
306 (setf (layout-slot-table wrapper)
307 (make-slot-table class slots
308 (member metaclass-name
309 '(standard-class funcallable-standard-class)))))
311 ;; For all direct superclasses SUPER of CLASS, make sure CLASS is
312 ;; a direct subclass of SUPER. Note that METACLASS-NAME doesn't
313 ;; matter here for the slot DIRECT-SUBCLASSES, since every class
314 ;; inherits the slot from class CLASS.
315 (dolist (super direct-supers)
316 (let* ((super (find-class super))
317 (subclasses (!bootstrap-get-slot metaclass-name super
318 'direct-subclasses)))
319 (cond ((eq +slot-unbound+ subclasses)
320 (!bootstrap-set-slot metaclass-name super 'direct-subclasses
322 ((not (memq class subclasses))
323 (!bootstrap-set-slot metaclass-name super 'direct-subclasses
324 (cons class subclasses))))))
328 (let ((constructor-sym '|STRUCTURE-OBJECT class constructor|))
329 (set-slot 'defstruct-form
330 `(defstruct (structure-object (:constructor
333 (set-slot 'defstruct-constructor constructor-sym)
334 (set-slot 'from-defclass-p t)
335 (set-slot 'plist nil)
336 (set-slot 'prototype (funcall constructor-sym))))
338 (set-slot 'prototype (make-condition name)))
341 (if proto-p proto (allocate-standard-instance wrapper)))))
344 (defun !bootstrap-make-slot-definitions (name class slots wrapper effective-p)
346 (mapcar (lambda (slot)
348 (!bootstrap-make-slot-definition
349 name class slot wrapper effective-p index))
352 (defun !bootstrap-make-slot-definition
353 (name class slot wrapper effective-p index)
354 (let* ((slotd-class-name (if effective-p
355 'standard-effective-slot-definition
356 'standard-direct-slot-definition))
357 (slotd (allocate-standard-instance wrapper))
358 (slot-name (getf slot :name)))
359 (flet ((get-val (name) (getf slot name))
361 (!bootstrap-set-slot slotd-class-name slotd name val)))
362 (set-val 'name slot-name)
363 (set-val 'initform (get-val :initform))
364 (set-val 'initfunction (get-val :initfunction))
365 (set-val 'initargs (get-val :initargs))
366 (set-val 'readers (get-val :readers))
367 (set-val 'writers (get-val :writers))
368 (set-val 'allocation :instance)
369 (set-val '%type (or (get-val :type) t))
370 (set-val '%type-check-function (get-val 'type-check-function))
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 nil slot-name index))
378 (set-val 'writer-function (make-optimized-std-writer-method-function
379 fsc-p nil slot-name index))
380 (set-val 'boundp-function (make-optimized-std-boundp-method-function
381 fsc-p nil slot-name index)))
382 (set-val 'accessor-flags 7))
383 (when (and (eq name 'standard-class)
384 (eq slot-name 'slots) effective-p)
385 (setq *the-eslotd-standard-class-slots* slotd))
386 (when (and (eq name 'funcallable-standard-class)
387 (eq slot-name 'slots) effective-p)
388 (setq *the-eslotd-funcallable-standard-class-slots* slotd))
391 (defun !bootstrap-accessor-definitions (early-p)
392 (let ((*early-p* early-p))
393 (dolist (definition *early-class-definitions*)
394 (let ((name (ecd-class-name definition))
395 (meta (ecd-metaclass definition)))
396 (unless (eq meta 'built-in-class)
397 (let ((direct-slots (ecd-canonical-slots definition)))
398 (dolist (slotd direct-slots)
399 (let ((slot-name (getf slotd :name))
400 (readers (getf slotd :readers))
401 (writers (getf slotd :writers)))
402 (!bootstrap-accessor-definitions1
408 (ecd-source-location definition))))))))))
410 (defun !bootstrap-accessor-definition (class-name accessor-name slot-name type source-location)
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))
445 :definition-source source-location))))))
447 (defun !bootstrap-accessor-definitions1 (class-name
453 (flet ((do-reader-definition (reader)
454 (!bootstrap-accessor-definition class-name
459 (do-writer-definition (writer)
460 (!bootstrap-accessor-definition class-name
465 (do-boundp-definition (boundp)
466 (!bootstrap-accessor-definition class-name
471 (dolist (reader readers) (do-reader-definition reader))
472 (dolist (writer writers) (do-writer-definition writer))
473 (dolist (boundp boundps) (do-boundp-definition boundp))))
475 ;;; FIXME: find a better name.
476 (defun !bootstrap-class-predicates (early-p)
477 (let ((*early-p* early-p))
478 (dolist (ecp *early-class-predicates*)
479 (let ((class-name (car ecp))
480 (predicate-name (cadr ecp)))
481 (make-class-predicate (find-class class-name) predicate-name)))))
483 (defun !bootstrap-built-in-classes ()
485 ;; First make sure that all the supers listed in
486 ;; *BUILT-IN-CLASS-LATTICE* are themselves defined by
487 ;; *BUILT-IN-CLASS-LATTICE*. This is just to check for typos and
488 ;; other sorts of brainos.
489 (dolist (e *built-in-classes*)
490 (dolist (super (cadr e))
491 (unless (or (eq super t)
492 (assq super *built-in-classes*))
493 (error "in *BUILT-IN-CLASSES*: ~S has ~S as a super,~%~
494 but ~S is not itself a class in *BUILT-IN-CLASSES*."
495 (car e) super super))))
497 ;; In the first pass, we create a skeletal object to be bound to the
499 (let* ((built-in-class (find-class 'built-in-class))
500 (built-in-class-wrapper (class-wrapper built-in-class)))
501 (dolist (e *built-in-classes*)
502 (let ((class (allocate-standard-instance built-in-class-wrapper)))
503 (setf (find-class (car e)) class))))
505 ;; In the second pass, we initialize the class objects.
506 (let ((class-eq-wrapper (class-wrapper (find-class 'class-eq-specializer))))
507 (dolist (e *built-in-classes*)
508 (destructuring-bind (name supers subs cpl prototype) e
509 (let* ((class (find-class name))
510 (lclass (find-classoid name))
511 (wrapper (classoid-layout lclass)))
512 (set (get-built-in-class-symbol name) class)
513 (set (get-built-in-wrapper-symbol name) wrapper)
514 (setf (classoid-pcl-class lclass) class)
516 (!bootstrap-initialize-class 'built-in-class class
517 name class-eq-wrapper nil
520 wrapper prototype))))))
522 #-sb-fluid (declaim (inline wrapper-of))
523 (defun wrapper-of (x)
527 (wrapper-class* (wrapper-of x)))
529 (defun eval-form (form)
530 (lambda () (eval form)))
532 (defun ensure-non-standard-class (name classoid &optional existing-class)
534 ((ensure (metaclass &optional (slots nil slotsp))
535 (let ((supers (mapcar #'classoid-name (classoid-direct-superclasses classoid))))
537 (ensure-class-using-class existing-class name
538 :metaclass metaclass :name name
539 :direct-superclasses supers
541 (ensure-class-using-class existing-class name
542 :metaclass metaclass :name name
543 :direct-superclasses supers))))
544 (slot-initargs-from-structure-slotd (slotd)
545 (let ((accessor (structure-slotd-accessor-symbol slotd)))
546 `(:name ,(structure-slotd-name slotd)
547 :defstruct-accessor-symbol ,accessor
548 ,@(when (fboundp accessor)
549 `(:internal-reader-function
550 ,(structure-slotd-reader-function slotd)
551 :internal-writer-function
552 ,(structure-slotd-writer-function name slotd)))
553 :type ,(or (structure-slotd-type slotd) t)
554 :initform ,(structure-slotd-init-form slotd)
555 :initfunction ,(eval-form (structure-slotd-init-form slotd)))))
556 (slot-initargs-from-condition-slot (slot)
557 `(:name ,(condition-slot-name slot)
558 :initargs ,(condition-slot-initargs slot)
559 :readers ,(condition-slot-readers slot)
560 :writers ,(condition-slot-writers slot)
561 ,@(when (condition-slot-initform-p slot)
562 (let ((form-or-fun (condition-slot-initform slot)))
563 (if (functionp form-or-fun)
564 `(:initfunction ,form-or-fun)
565 `(:initform ,form-or-fun
566 :initfunction ,(lambda () form-or-fun)))))
567 :allocation ,(condition-slot-allocation slot)
568 :documentation ,(condition-slot-documentation slot))))
569 (cond ((structure-type-p name)
570 (ensure 'structure-class
571 (mapcar #'slot-initargs-from-structure-slotd
572 (structure-type-slot-description-list name))))
573 ((condition-type-p name)
574 (ensure 'condition-class
575 (mapcar #'slot-initargs-from-condition-slot
576 (condition-classoid-slots classoid))))
578 (error "~@<~S is not the name of a class.~@:>" name)))))
580 (defun ensure-deffoo-class (classoid)
581 (let ((class (classoid-pcl-class classoid)))
583 (ensure-non-standard-class (class-name class) classoid class))
584 ((eq 'complete **boot-state**)
585 (ensure-non-standard-class (classoid-name classoid) classoid)))))
587 (pushnew 'ensure-deffoo-class sb-kernel::*defstruct-hooks*)
588 (pushnew 'ensure-deffoo-class sb-kernel::*define-condition-hooks*)
590 ;;; FIXME: only needed during bootstrap
591 (defun make-class-predicate (class name)
592 (let* ((gf (ensure-generic-function name :lambda-list '(object)))
593 (mlist (if (eq **boot-state** 'complete)
594 (early-gf-methods gf)
595 (generic-function-methods gf))))
597 (unless (eq class *the-class-t*)
598 (let* ((default-method-function #'constantly-nil)
599 (default-method-initargs (list :function default-method-function
600 'plist '(:constant-value nil)))
601 (default-method (make-a-method
606 default-method-initargs
607 "class predicate default method")))
608 (add-method gf default-method)))
609 (let* ((class-method-function #'constantly-t)
610 (class-method-initargs (list :function class-method-function
611 'plist '(:constant-value t)))
612 (class-method (make-a-method 'standard-method
616 class-method-initargs
617 "class predicate class method")))
618 (add-method gf class-method)))
621 ;;; Set the inherits from CPL, and register the layout. This actually
622 ;;; installs the class in the Lisp type system.
623 (defun %update-lisp-class-layout (class layout)
624 ;; Protected by *world-lock* in callers.
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 (!bootstrap-meta-braid)
664 (!bootstrap-accessor-definitions t)
665 (!bootstrap-class-predicates t)
666 (!bootstrap-accessor-definitions nil)
667 (!bootstrap-class-predicates nil)
668 (!bootstrap-built-in-classes)
670 (dohash ((name x) sb-kernel::*classoid-cells*)
671 (when (classoid-cell-pcl-class x)
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 (define-condition no-primary-method (reference-condition error)
711 ((generic-function :initarg :generic-function :reader no-primary-method-generic-function)
712 (args :initarg :args :reader no-primary-method-args))
715 (format s "~@<There is no primary method for the generic function ~2I~_~S~
716 ~I~_when called with arguments ~2I~_~S.~:>"
717 (no-primary-method-generic-function c)
718 (no-primary-method-args c))))
719 (:default-initargs :references (list '(:ansi-cl :section (7 6 6 2)))))
720 (defmethod no-primary-method (generic-function &rest args)
721 (error 'no-primary-method :generic-function generic-function :args args))
723 (defmethod invalid-qualifiers ((gf generic-function)
726 (let ((qualifiers (method-qualifiers method)))
728 ((cdr qualifiers) "has too many qualifiers")
729 (t (aver (not (member (car qualifiers)
730 '(:around :before :after))))
731 "has an invalid qualifier"))))
732 (invalid-method-error
734 "The method ~S on ~S ~A.~%~
735 Standard method combination requires all methods to have one~%~
736 of the single qualifiers :AROUND, :BEFORE and :AFTER or to~%~
737 have no qualifier at all."