1 ;;;; This file contains the optimization machinery for make-instance.
3 ;;;; This software is part of the SBCL system. See the README file for
6 ;;;; This software is derived from software originally released by
7 ;;;; Gerd Moellmann. Copyright and release statements follow. Later
8 ;;;; modifications to the software are in the public domain and are
9 ;;;; provided with absolutely no warranty. See the COPYING and
10 ;;;; CREDITS files for more information.
12 ;;; Copyright (C) 2002 Gerd Moellmann <gerd.moellmann@t-online.de>
13 ;;; All rights reserved.
15 ;;; Redistribution and use in source and binary forms, with or without
16 ;;; modification, are permitted provided that the following conditions
19 ;;; 1. Redistributions of source code must retain the above copyright
20 ;;; notice, this list of conditions and the following disclaimer.
21 ;;; 2. Redistributions in binary form must reproduce the above copyright
22 ;;; notice, this list of conditions and the following disclaimer in the
23 ;;; documentation and/or other materials provided with the distribution.
24 ;;; 3. The name of the author may not be used to endorse or promote
25 ;;; products derived from this software without specific prior written
28 ;;; THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
29 ;;; OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
30 ;;; WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
31 ;;; ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE
32 ;;; LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
33 ;;; CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
34 ;;; OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
35 ;;; BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
36 ;;; LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
37 ;;; (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
38 ;;; USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
45 ;;; Compiler macro for MAKE-INSTANCE, and load-time generation of
46 ;;; optimized instance constructor functions.
48 ;;; ********************
49 ;;; Entry Points ******
50 ;;; ********************
52 ;;; UPDATE-CTORS must be called when methods are added/removed,
53 ;;; classes are changed, etc., which affect instance creation.
55 ;;; PRECOMPILE-CTORS can be called to precompile constructor functions
56 ;;; for classes whose definitions are known at the time the function
61 ;;; ******************
63 ;;; ******************
65 (defun quote-plist-keys (plist)
66 (loop for
(key . more
) on plist by
#'cddr
68 (error "Not a property list: ~S" plist
)
71 and collect
(car more
)))
73 (defun plist-keys (plist &key test
)
74 (loop for
(key . more
) on plist by
#'cddr
76 (error "Not a property list: ~S" plist
)
77 else if
(or (null test
) (funcall test key
))
80 (defun plist-values (plist &key test
)
81 (loop for
(key . more
) on plist by
#'cddr
83 (error "Not a property list: ~S" plist
)
84 else if
(or (null test
) (funcall test
(car more
)))
87 (defun constant-symbol-p (form)
89 (let ((constant (eval form
)))
90 (and (symbolp constant
)
91 (not (null (symbol-package constant
)))))))
93 ;;; somewhat akin to DEFAULT-INITARGS (SLOT-CLASS T T), but just
94 ;;; collecting the defaulted initargs for the call.
95 (defun ctor-default-initkeys (supplied-initargs class-default-initargs
)
96 (loop for
(key) in class-default-initargs
97 when
(eq (getf supplied-initargs key
'.not-there.
) '.not-there.
)
100 ;;; *****************
102 ;;; *****************
104 ;;; Ctors are funcallable instances whose initial function is a
105 ;;; function computing an optimized constructor function when called.
106 ;;; When the optimized function is computed, the function of the
107 ;;; funcallable instance is set to it.
109 (!defstruct-with-alternate-metaclass ctor
110 :slot-names
(function-name class-name class initargs
)
111 :boa-constructor %make-ctor
112 :superclass-name function
113 :metaclass-name random-pcl-classoid
114 :metaclass-constructor make-random-pcl-classoid
115 :dd-type funcallable-structure
116 :runtime-type-checks-p nil
)
118 ;;; List of all defined ctors.
120 (defvar *all-ctors
* ())
122 (defun make-ctor-parameter-list (ctor)
123 (plist-values (ctor-initargs ctor
) :test
(complement #'constantp
)))
125 ;;; Reset CTOR to use a default function that will compute an
126 ;;; optimized constructor function when called.
127 (defun install-initial-constructor (ctor &key force-p
)
128 (when (or force-p
(ctor-class ctor
))
129 (setf (ctor-class ctor
) nil
)
130 (setf (funcallable-instance-fun ctor
)
131 #'(lambda (&rest args
)
132 (install-optimized-constructor ctor
)
134 (setf (%funcallable-instance-info ctor
1)
135 (ctor-function-name ctor
))))
137 (defun make-ctor-function-name (class-name initargs
)
138 (list* 'ctor class-name initargs
))
140 ;;; Keep this a separate function for testing.
141 (defun ensure-ctor (function-name class-name initargs
)
142 (unless (fboundp function-name
)
143 (make-ctor function-name class-name initargs
)))
145 ;;; Keep this a separate function for testing.
146 (defun make-ctor (function-name class-name initargs
)
147 (without-package-locks ; for (setf symbol-function)
148 (let ((ctor (%make-ctor function-name class-name nil initargs
)))
149 (push ctor
*all-ctors
*)
150 (setf (fdefinition function-name
) ctor
)
151 (install-initial-constructor ctor
:force-p t
)
155 ;;; ***********************************************
156 ;;; Compile-Time Expansion of MAKE-INSTANCE *******
157 ;;; ***********************************************
159 (define-compiler-macro make-instance
(&whole form
&rest args
)
160 (declare (ignore args
))
161 (or (make-instance->constructor-call form
)
164 (defun make-instance->constructor-call
(form)
165 (destructuring-bind (fn class-name
&rest args
) form
166 (declare (ignore fn
))
168 ;; Return the name of parameter number I of a constructor
171 (let ((ps #(.p0. .p1. .p2. .p3. .p4. .p5.
)))
172 (if (array-in-bounds-p ps i
)
174 (format-symbol *pcl-package
* ".P~D." i
))))
175 ;; Check if CLASS-NAME is a constant symbol. Give up if
178 (unless (and class-name
(constant-symbol-p class-name
))
179 (return-from make-instance-
>constructor-call nil
)))
180 ;; Check if ARGS are suitable for an optimized constructor.
181 ;; Return NIL from the outer function if not.
183 (loop for
(key . more
) on args by
#'cddr do
184 (when (or (null more
)
185 (not (constant-symbol-p key
))
186 (eq :allow-other-keys
(eval key
)))
187 (return-from make-instance-
>constructor-call nil
)))))
190 ;; Collect a plist of initargs and constant values/parameter names
191 ;; in INITARGS. Collect non-constant initialization forms in
193 (multiple-value-bind (initargs value-forms
)
194 (loop for
(key value
) on args by
#'cddr and i from
0
195 collect
(eval key
) into initargs
197 collect value into initargs
199 collect
(parameter-name i
) into initargs
200 and collect value into value-forms
202 (return (values initargs value-forms
)))
203 (let* ((class-name (eval class-name
))
204 (function-name (make-ctor-function-name class-name initargs
)))
205 ;; Prevent compiler warnings for calling the ctor.
206 (proclaim-as-fun-name function-name
)
207 (note-name-defined function-name
:function
)
208 (when (eq (info :function
:where-from function-name
) :assumed
)
209 (setf (info :function
:where-from function-name
) :defined
)
210 (when (info :function
:assumed-type function-name
)
211 (setf (info :function
:assumed-type function-name
) nil
)))
212 ;; Return code constructing a ctor at load time, which, when
213 ;; called, will set its funcallable instance function to an
214 ;; optimized constructor function.
216 (declare (disable-package-locks ,function-name
))
217 (let ((.x.
(load-time-value
218 (ensure-ctor ',function-name
',class-name
',initargs
))))
219 (declare (ignore .x.
))
220 ;; ??? check if this is worth it.
222 (ftype (or (function ,(make-list (length value-forms
)
225 (function (&rest t
) t
))
227 (funcall (function ,function-name
) ,@value-forms
))))))))
230 ;;; **************************************************
231 ;;; Load-Time Constructor Function Generation *******
232 ;;; **************************************************
234 ;;; The system-supplied primary INITIALIZE-INSTANCE and
235 ;;; SHARED-INITIALIZE methods. One cannot initialize these variables
236 ;;; to the right values here because said functions don't exist yet
237 ;;; when this file is first loaded.
238 (defvar *the-system-ii-method
* nil
)
239 (defvar *the-system-si-method
* nil
)
241 (defun install-optimized-constructor (ctor)
242 (let ((class (find-class (ctor-class-name ctor
))))
243 (unless (class-finalized-p class
)
244 (finalize-inheritance class
))
245 (setf (ctor-class ctor
) class
)
246 (pushnew ctor
(plist-value class
'ctors
))
247 (setf (funcallable-instance-fun ctor
)
248 (multiple-value-bind (form locations names
)
249 (constructor-function-form ctor
)
250 (apply (compile nil
`(lambda ,names
,form
)) locations
)))))
252 (defun constructor-function-form (ctor)
253 (let* ((class (ctor-class ctor
))
254 (proto (class-prototype class
))
255 (make-instance-methods
256 (compute-applicable-methods #'make-instance
(list class
)))
257 (allocate-instance-methods
258 (compute-applicable-methods #'allocate-instance
(list class
)))
259 ;; I stared at this in confusion for a while, thinking
260 ;; carefully about the possibility of the class prototype not
261 ;; being of sufficient discrimiating power, given the
262 ;; possibility of EQL-specialized methods on
263 ;; INITIALIZE-INSTANCE or SHARED-INITIALIZE. However, given
264 ;; that this is a constructor optimization, the user doesn't
265 ;; yet have the instance to create a method with such an EQL
268 ;; There remains the (theoretical) possibility of someone
269 ;; coming along with code of the form
271 ;; (defmethod initialize-instance :before ((o foo) ...)
272 ;; (eval `(defmethod shared-initialize :before ((o foo) ...) ...)))
274 ;; but probably we can afford not to worry about this too
275 ;; much for now. -- CSR, 2004-07-12
277 (compute-applicable-methods #'initialize-instance
(list proto
)))
279 (compute-applicable-methods #'shared-initialize
(list proto t
)))
280 (setf-svuc-slots-methods
281 (loop for slot in
(class-slots class
)
282 collect
(compute-applicable-methods
283 #'(setf slot-value-using-class
)
284 (list nil class proto slot
))))
286 (loop for slot in
(class-slots class
)
287 collect
(compute-applicable-methods
288 #'slot-boundp-using-class
289 (list class proto slot
)))))
290 ;; Cannot initialize these variables earlier because the generic
291 ;; functions don't exist when PCL is built.
292 (when (null *the-system-si-method
*)
293 (setq *the-system-si-method
*
294 (find-method #'shared-initialize
295 () (list *the-class-slot-object
* *the-class-t
*)))
296 (setq *the-system-ii-method
*
297 (find-method #'initialize-instance
298 () (list *the-class-slot-object
*))))
299 ;; Note that when there are user-defined applicable methods on
300 ;; MAKE-INSTANCE and/or ALLOCATE-INSTANCE, these will show up
301 ;; together with the system-defined ones in what
302 ;; COMPUTE-APPLICABLE-METHODS returns.
303 (if (and (not (structure-class-p class
))
304 (not (condition-class-p class
))
305 (null (cdr make-instance-methods
))
306 (null (cdr allocate-instance-methods
))
308 (member (slot-definition-allocation x
)
309 '(:instance
:class
)))
311 (null (check-initargs-1
314 (ctor-default-initkeys
315 (ctor-initargs ctor
) (class-default-initargs class
))
316 (plist-keys (ctor-initargs ctor
)))
317 (append ii-methods si-methods
) nil nil
))
318 (not (around-or-nonstandard-primary-method-p
319 ii-methods
*the-system-ii-method
*))
320 (not (around-or-nonstandard-primary-method-p
321 si-methods
*the-system-si-method
*))
322 ;; the instance structure protocol goes through
323 ;; slot-value(-using-class) and friends (actually just
324 ;; (SETF SLOT-VALUE-USING-CLASS) and
325 ;; SLOT-BOUNDP-USING-CLASS), so if there are non-standard
326 ;; applicable methods we can't shortcircuit them.
327 (every (lambda (x) (= (length x
) 1)) setf-svuc-slots-methods
)
328 (every (lambda (x) (= (length x
) 1)) sbuc-slots-methods
))
329 (optimizing-generator ctor ii-methods si-methods
)
330 (fallback-generator ctor ii-methods si-methods
))))
332 (defun around-or-nonstandard-primary-method-p
333 (methods &optional standard-method
)
334 (loop with primary-checked-p
= nil
335 for method in methods
336 as qualifiers
= (method-qualifiers method
)
337 when
(or (eq :around
(car qualifiers
))
338 (and (null qualifiers
)
339 (not primary-checked-p
)
340 (not (null standard-method
))
341 (not (eq standard-method method
))))
343 when
(null qualifiers
) do
344 (setq primary-checked-p t
)))
346 (defun fallback-generator (ctor ii-methods si-methods
)
347 (declare (ignore ii-methods si-methods
))
348 `(lambda ,(make-ctor-parameter-list ctor
)
349 ;; The CTOR MAKE-INSTANCE optimization only kicks in when the
350 ;; first argument to MAKE-INSTANCE is a constant symbol: by
351 ;; calling it with a class, as here, we inhibit the optimization,
352 ;; so removing the possibility of endless recursion. -- CSR,
354 (make-instance ,(ctor-class ctor
) ,@(ctor-initargs ctor
))))
356 (defun optimizing-generator (ctor ii-methods si-methods
)
357 (multiple-value-bind (locations names body before-method-p
)
358 (fake-initialization-emf ctor ii-methods si-methods
)
360 `(lambda ,(make-ctor-parameter-list ctor
)
361 (declare #.
*optimize-speed
*)
362 ,(wrap-in-allocate-forms ctor body before-method-p
))
366 ;;; Return a form wrapped around BODY that allocates an instance
367 ;;; constructed by CTOR. BEFORE-METHOD-P set means we have to run
368 ;;; before-methods, in which case we initialize instance slots to
369 ;;; +SLOT-UNBOUND+. The resulting form binds the local variables
370 ;;; .INSTANCE. to the instance, and .SLOTS. to the instance's slot
371 ;;; vector around BODY.
372 (defun wrap-in-allocate-forms (ctor body before-method-p
)
373 (let* ((class (ctor-class ctor
))
374 (wrapper (class-wrapper class
))
375 (allocation-function (raw-instance-allocator class
))
376 (slots-fetcher (slots-fetcher class
)))
377 (if (eq allocation-function
'allocate-standard-instance
)
378 `(let ((.instance.
(%make-standard-instance nil
379 (get-instance-hash-code)))
381 ,(layout-length wrapper
)
382 ,@(when before-method-p
383 '(:initial-element
+slot-unbound
+)))))
384 (setf (std-instance-wrapper .instance.
) ,wrapper
)
385 (setf (std-instance-slots .instance.
) .slots.
)
388 `(let* ((.instance.
(,allocation-function
,wrapper
))
389 (.slots.
(,slots-fetcher .instance.
)))
393 ;;; Return a form for invoking METHOD with arguments from ARGS. As
394 ;;; can be seen in METHOD-FUNCTION-FROM-FAST-FUNCTION, method
395 ;;; functions look like (LAMBDA (ARGS NEXT-METHODS) ...). We could
396 ;;; call fast method functions directly here, but benchmarks show that
397 ;;; there's no speed to gain, so lets avoid the hair here.
398 (defmacro invoke-method
(method args
)
399 `(funcall ,(method-function method
) ,args
()))
401 ;;; Return a form that is sort of an effective method comprising all
402 ;;; calls to INITIALIZE-INSTANCE and SHARED-INITIALIZE that would
403 ;;; normally have taken place when calling MAKE-INSTANCE.
404 (defun fake-initialization-emf (ctor ii-methods si-methods
)
405 (multiple-value-bind (ii-around ii-before ii-primary ii-after
)
406 (standard-sort-methods ii-methods
)
407 (declare (ignore ii-primary
))
408 (multiple-value-bind (si-around si-before si-primary si-after
)
409 (standard-sort-methods si-methods
)
410 (declare (ignore si-primary
))
411 (aver (and (null ii-around
) (null si-around
)))
412 (let ((initargs (ctor-initargs ctor
)))
413 (multiple-value-bind (locations names bindings vars defaulting-initargs body
)
414 (slot-init-forms ctor
(or ii-before si-before
))
419 (declare (ignorable ,@vars
))
420 (let (,@(when (or ii-before ii-after
)
422 (list .instance.
,@(quote-plist-keys initargs
) ,@defaulting-initargs
))))
423 ,@(when (or si-before si-after
)
425 (list .instance. t
,@(quote-plist-keys initargs
) ,@defaulting-initargs
)))))
426 ,@(loop for method in ii-before
427 collect
`(invoke-method ,method .ii-args.
))
428 ,@(loop for method in si-before
429 collect
`(invoke-method ,method .si-args.
))
431 ,@(loop for method in si-after
432 collect
`(invoke-method ,method .si-args.
))
433 ,@(loop for method in ii-after
434 collect
`(invoke-method ,method .ii-args.
))))
435 (or ii-before si-before
)))))))
437 ;;; Return four values from APPLICABLE-METHODS: around methods, before
438 ;;; methods, the applicable primary method, and applicable after
439 ;;; methods. Before and after methods are sorted in the order they
441 (defun standard-sort-methods (applicable-methods)
442 (loop for method in applicable-methods
443 as qualifiers
= (method-qualifiers method
)
445 collect method into primary
446 else if
(eq :around
(car qualifiers
))
447 collect method into around
448 else if
(eq :after
(car qualifiers
))
449 collect method into after
450 else if
(eq :before
(car qualifiers
))
451 collect method into before
453 (return (values around before
(first primary
) (reverse after
)))))
455 ;;; Return as multiple values bindings for default initialization
456 ;;; arguments, variable names, defaulting initargs and a body for
457 ;;; initializing instance and class slots of an object costructed by
458 ;;; CTOR. The variable .SLOTS. is assumed to bound to the instance's
459 ;;; slot vector. BEFORE-METHOD-P T means before-methods will be
460 ;;; called, which means that 1) other code will initialize instance
461 ;;; slots to +SLOT-UNBOUND+ before the before-methods are run, and
462 ;;; that we have to check if these before-methods have set slots.
463 (defun slot-init-forms (ctor before-method-p
)
464 (let* ((class (ctor-class ctor
))
465 (initargs (ctor-initargs ctor
))
466 (initkeys (plist-keys initargs
))
468 (make-array (layout-length (class-wrapper class
))
469 :initial-element nil
))
472 (defaulting-initargs ())
473 (default-initargs (class-default-initargs class
))
475 (compute-initarg-locations
476 class
(append initkeys
(mapcar #'car default-initargs
)))))
477 (labels ((initarg-locations (initarg)
478 (cdr (assoc initarg initarg-locations
:test
#'eq
)))
479 (initializedp (location)
482 (assoc location class-inits
:test
#'eq
))
484 (not (null (aref slot-vector location
))))
485 (t (bug "Weird location in ~S" 'slot-init-forms
))))
486 (class-init (location type val
)
487 (aver (consp location
))
488 (unless (initializedp location
)
489 (push (list location type val
) class-inits
)))
490 (instance-init (location type val
)
491 (aver (integerp location
))
492 (unless (initializedp location
)
493 (setf (aref slot-vector location
) (list type val
))))
494 (default-init-var-name (i)
495 (let ((ps #(.d0. .d1. .d2. .d3. .d4. .d5.
)))
496 (if (array-in-bounds-p ps i
)
498 (format-symbol *pcl-package
* ".D~D." i
))))
499 (location-var-name (i)
500 (let ((ls #(.l0. .l1. .l2. .l3. .l4. .l5.
)))
501 (if (array-in-bounds-p ls i
)
503 (format-symbol *pcl-package
* ".L~D." i
)))))
504 ;; Loop over supplied initargs and values and record which
505 ;; instance and class slots they initialize.
506 (loop for
(key value
) on initargs by
#'cddr
507 as locations
= (initarg-locations key
) do
508 (if (constantp value
)
509 (dolist (location locations
)
511 (class-init location
'constant value
)
512 (instance-init location
'constant value
)))
513 (dolist (location locations
)
515 (class-init location
'param value
)
516 (instance-init location
'param value
)))))
517 ;; Loop over default initargs of the class, recording
518 ;; initializations of slots that have not been initialized
519 ;; above. Default initargs which are not in the supplied
520 ;; initargs are treated as if they were appended to supplied
521 ;; initargs, that is, their values must be evaluated even
522 ;; if not actually used for initializing a slot.
523 (loop for
(key initform initfn
) in default-initargs and i from
0
524 unless
(member key initkeys
:test
#'eq
) do
525 (let* ((type (if (constantp initform
) 'constant
'var
))
526 (init (if (eq type
'var
) initfn initform
)))
529 (push key defaulting-initargs
)
530 (push initform defaulting-initargs
))
532 (push key defaulting-initargs
)
533 (push (default-init-var-name i
) defaulting-initargs
)))
535 (let ((init-var (default-init-var-name i
)))
537 (push (cons init-var initfn
) default-inits
)))
538 (dolist (location (initarg-locations key
))
540 (class-init location type init
)
541 (instance-init location type init
)))))
542 ;; Loop over all slots of the class, filling in the rest from
544 (loop for slotd in
(class-slots class
)
545 as location
= (slot-definition-location slotd
)
546 as allocation
= (slot-definition-allocation slotd
)
547 as initfn
= (slot-definition-initfunction slotd
)
548 as initform
= (slot-definition-initform slotd
) do
549 (unless (or (eq allocation
:class
)
551 (initializedp location
))
552 (if (constantp initform
)
553 (instance-init location
'initform initform
)
554 (instance-init location
'initform
/initfn initfn
))))
555 ;; Generate the forms for initializing instance and class slots.
556 (let ((instance-init-forms
557 (loop for slot-entry across slot-vector and i from
0
558 as
(type value
) = slot-entry collect
561 (unless before-method-p
562 `(setf (clos-slots-ref .slots.
,i
) +slot-unbound
+)))
564 `(setf (clos-slots-ref .slots.
,i
) ,value
))
566 `(setf (clos-slots-ref .slots.
,i
) (funcall ,value
)))
569 `(when (eq (clos-slots-ref .slots.
,i
)
571 (setf (clos-slots-ref .slots.
,i
)
573 `(setf (clos-slots-ref .slots.
,i
)
577 `(when (eq (clos-slots-ref .slots.
,i
)
579 (setf (clos-slots-ref .slots.
,i
)
581 `(setf (clos-slots-ref .slots.
,i
)
584 `(setf (clos-slots-ref .slots.
,i
) ',(eval value
)))))))
585 ;; we are not allowed to modify QUOTEd locations, so we can't
586 ;; generate code like (setf (cdr ',location) arg). Instead,
587 ;; we have to do (setf (cdr .L0.) arg) and arrange for .L0. to
588 ;; be bound to the location.
589 (multiple-value-bind (names locations class-init-forms
)
590 (loop for
(location type value
) in class-inits
592 for name
= (location-var-name i
)
593 collect name into names
594 collect location into locations
595 collect
`(setf (cdr ,name
)
597 (constant `',(eval value
))
598 ((param var
) `,value
)
599 (initfn `(funcall ,value
))))
600 into class-init-forms
601 finally
(return (values names locations class-init-forms
)))
602 (multiple-value-bind (vars bindings
)
603 (loop for
(var . initfn
) in
(nreverse default-inits
)
604 collect var into vars
605 collect
`(,var
(funcall ,initfn
)) into bindings
606 finally
(return (values vars bindings
)))
607 (values locations names
609 (nreverse defaulting-initargs
)
610 `(,@(delete nil instance-init-forms
)
611 ,@class-init-forms
))))))))
613 ;;; Return an alist of lists (KEY LOCATION ...) telling, for each
614 ;;; key in INITKEYS, which locations the initarg initializes.
615 ;;; CLASS is the class of the instance being initialized.
616 (defun compute-initarg-locations (class initkeys
)
617 (loop with slots
= (class-slots class
)
618 for key in initkeys collect
619 (loop for slot in slots
620 if
(memq key
(slot-definition-initargs slot
))
621 collect
(slot-definition-location slot
) into locations
623 collect slot into remaining-slots
625 (setq slots remaining-slots
)
626 (return (cons key locations
)))))
629 ;;; *******************************
630 ;;; External Entry Points ********
631 ;;; *******************************
633 (defun update-ctors (reason &key class name generic-function method
)
634 (labels ((reset (class &optional ri-cache-p
(ctorsp t
))
636 (dolist (ctor (plist-value class
'ctors
))
637 (install-initial-constructor ctor
)))
639 (setf (plist-value class
'ri-initargs
) ()))
640 (dolist (subclass (class-direct-subclasses class
))
641 (reset subclass ri-cache-p ctorsp
))))
643 ;; CLASS must have been specified.
644 (finalize-inheritance
646 ;; NAME must have been specified.
648 (loop for ctor in
*all-ctors
*
649 when
(eq (ctor-class-name ctor
) name
) do
650 (when (ctor-class ctor
)
651 (reset (ctor-class ctor
)))
653 ;; GENERIC-FUNCTION and METHOD must have been specified.
654 ((add-method remove-method
)
655 (flet ((class-of-1st-method-param (method)
656 (type-class (first (method-specializers method
)))))
657 (case (generic-function-name generic-function
)
658 ((make-instance allocate-instance
659 initialize-instance shared-initialize
)
660 (reset (class-of-1st-method-param method
) t t
))
661 ((reinitialize-instance)
662 (reset (class-of-1st-method-param method
) t nil
))
663 (t (when (or (eq (generic-function-name generic-function
)
664 'slot-boundp-using-class
)
665 (equal (generic-function-name generic-function
)
666 '(setf slot-value-using-class
)))
667 ;; this looks awfully expensive, but given that one
668 ;; can specialize on the SLOTD argument, nothing is
669 ;; safe. -- CSR, 2004-07-12
670 (reset (find-class 'standard-object
))))))))))
672 (defun precompile-ctors ()
673 (dolist (ctor *all-ctors
*)
674 (when (null (ctor-class ctor
))
675 (let ((class (find-class (ctor-class-name ctor
) nil
)))
676 (when (and class
(class-finalized-p class
))
677 (install-optimized-constructor ctor
))))))
679 (defun check-ri-initargs (instance initargs
)
680 (let* ((class (class-of instance
))
681 (keys (plist-keys initargs
))
682 (cached (assoc keys
(plist-value class
'ri-initargs
)
688 ;; FIXME: give CHECK-INITARGS-1 and friends a
689 ;; more mnemonic name and (possibly) a nicer,
690 ;; more orthogonal interface.
693 (list (list* 'reinitialize-instance instance initargs
)
694 (list* 'shared-initialize instance nil initargs
))
696 (setf (plist-value class
'ri-initargs
)
697 (acons keys invalid cached
))
700 (error 'initarg-error
:class class
:initargs invalid-keys
))))