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 (constant-form-value 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 safe-p
)
111 :boa-constructor %make-ctor
112 :superclass-name function
113 :metaclass-name static-classoid
114 :metaclass-constructor make-static-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 safe-code-p
)
138 (list* 'ctor class-name safe-code-p initargs
))
140 ;;; Keep this a separate function for testing.
141 (defun ensure-ctor (function-name class-name initargs safe-code-p
)
142 (unless (fboundp function-name
)
143 (make-ctor function-name class-name initargs safe-code-p
)))
145 ;;; Keep this a separate function for testing.
146 (defun make-ctor (function-name class-name initargs safe-p
)
147 (without-package-locks ; for (setf symbol-function)
148 (let ((ctor (%make-ctor function-name class-name nil initargs safe-p
)))
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
&environment env
)
160 (declare (ignore args
))
161 (or (make-instance->constructor-call form
(safe-code-p env
))
164 (defun make-instance->constructor-call
(form safe-code-p
)
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
(constant-form-value 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
(constant-form-value 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 (constant-form-value class-name
))
204 (function-name (make-ctor-function-name class-name initargs
206 ;; Prevent compiler warnings for calling the ctor.
207 (proclaim-as-fun-name function-name
)
208 (note-name-defined function-name
:function
)
209 (when (eq (info :function
:where-from function-name
) :assumed
)
210 (setf (info :function
:where-from function-name
) :defined
)
211 (when (info :function
:assumed-type function-name
)
212 (setf (info :function
:assumed-type function-name
) nil
)))
213 ;; Return code constructing a ctor at load time, which, when
214 ;; called, will set its funcallable instance function to an
215 ;; optimized constructor function.
217 (declare (disable-package-locks ,function-name
))
218 (let ((.x.
(load-time-value
219 (ensure-ctor ',function-name
',class-name
',initargs
221 (declare (ignore .x.
))
222 ;; ??? check if this is worth it.
224 (ftype (or (function ,(make-list (length value-forms
)
227 (function (&rest t
) t
))
229 (funcall (function ,function-name
) ,@value-forms
))))))))
232 ;;; **************************************************
233 ;;; Load-Time Constructor Function Generation *******
234 ;;; **************************************************
236 ;;; The system-supplied primary INITIALIZE-INSTANCE and
237 ;;; SHARED-INITIALIZE methods. One cannot initialize these variables
238 ;;; to the right values here because said functions don't exist yet
239 ;;; when this file is first loaded.
240 (defvar *the-system-ii-method
* nil
)
241 (defvar *the-system-si-method
* nil
)
243 (defun install-optimized-constructor (ctor)
244 (let ((class (find-class (ctor-class-name ctor
))))
245 (unless (class-finalized-p class
)
246 (finalize-inheritance class
))
247 ;; We can have a class with an invalid layout here. Such a class
248 ;; cannot have a LAYOUT-INVALID of (:FLUSH ...) or (:OBSOLETE
249 ;; ...), because part of the deal is that those only happen from
250 ;; FORCE-CACHE-FLUSHES, which create a new valid wrapper for the
251 ;; class. An invalid layout of T needs to be flushed, however.
252 (when (eq (layout-invalid (class-wrapper class
)) t
)
253 (force-cache-flushes class
))
254 (setf (ctor-class ctor
) class
)
255 (pushnew ctor
(plist-value class
'ctors
) :test
#'eq
)
256 (setf (funcallable-instance-fun ctor
)
257 (multiple-value-bind (form locations names
)
258 (constructor-function-form ctor
)
259 (apply (compile nil
`(lambda ,names
,form
)) locations
)))))
261 (defun constructor-function-form (ctor)
262 (let* ((class (ctor-class ctor
))
263 (proto (class-prototype class
))
264 (make-instance-methods
265 (compute-applicable-methods #'make-instance
(list class
)))
266 (allocate-instance-methods
267 (compute-applicable-methods #'allocate-instance
(list class
)))
268 ;; I stared at this in confusion for a while, thinking
269 ;; carefully about the possibility of the class prototype not
270 ;; being of sufficient discrimiating power, given the
271 ;; possibility of EQL-specialized methods on
272 ;; INITIALIZE-INSTANCE or SHARED-INITIALIZE. However, given
273 ;; that this is a constructor optimization, the user doesn't
274 ;; yet have the instance to create a method with such an EQL
277 ;; There remains the (theoretical) possibility of someone
278 ;; coming along with code of the form
280 ;; (defmethod initialize-instance :before ((o foo) ...)
281 ;; (eval `(defmethod shared-initialize :before ((o foo) ...) ...)))
283 ;; but probably we can afford not to worry about this too
284 ;; much for now. -- CSR, 2004-07-12
286 (compute-applicable-methods #'initialize-instance
(list proto
)))
288 (compute-applicable-methods #'shared-initialize
(list proto t
)))
289 (setf-svuc-slots-methods
290 (loop for slot in
(class-slots class
)
291 collect
(compute-applicable-methods
292 #'(setf slot-value-using-class
)
293 (list nil class proto slot
))))
295 (loop for slot in
(class-slots class
)
296 collect
(compute-applicable-methods
297 #'slot-boundp-using-class
298 (list class proto slot
)))))
299 ;; Cannot initialize these variables earlier because the generic
300 ;; functions don't exist when PCL is built.
301 (when (null *the-system-si-method
*)
302 (setq *the-system-si-method
*
303 (find-method #'shared-initialize
304 () (list *the-class-slot-object
* *the-class-t
*)))
305 (setq *the-system-ii-method
*
306 (find-method #'initialize-instance
307 () (list *the-class-slot-object
*))))
308 ;; Note that when there are user-defined applicable methods on
309 ;; MAKE-INSTANCE and/or ALLOCATE-INSTANCE, these will show up
310 ;; together with the system-defined ones in what
311 ;; COMPUTE-APPLICABLE-METHODS returns.
312 (if (and (not (structure-class-p class
))
313 (not (condition-class-p class
))
314 (null (cdr make-instance-methods
))
315 (null (cdr allocate-instance-methods
))
317 (member (slot-definition-allocation x
)
318 '(:instance
:class
)))
320 (null (check-initargs-1
323 (ctor-default-initkeys
324 (ctor-initargs ctor
) (class-default-initargs class
))
325 (plist-keys (ctor-initargs ctor
)))
326 (append ii-methods si-methods
) nil nil
))
327 (not (around-or-nonstandard-primary-method-p
328 ii-methods
*the-system-ii-method
*))
329 (not (around-or-nonstandard-primary-method-p
330 si-methods
*the-system-si-method
*))
331 ;; the instance structure protocol goes through
332 ;; slot-value(-using-class) and friends (actually just
333 ;; (SETF SLOT-VALUE-USING-CLASS) and
334 ;; SLOT-BOUNDP-USING-CLASS), so if there are non-standard
335 ;; applicable methods we can't shortcircuit them.
336 (every (lambda (x) (= (length x
) 1)) setf-svuc-slots-methods
)
337 (every (lambda (x) (= (length x
) 1)) sbuc-slots-methods
))
338 (optimizing-generator ctor ii-methods si-methods
)
339 (fallback-generator ctor ii-methods si-methods
))))
341 (defun around-or-nonstandard-primary-method-p
342 (methods &optional standard-method
)
343 (loop with primary-checked-p
= nil
344 for method in methods
345 as qualifiers
= (method-qualifiers method
)
346 when
(or (eq :around
(car qualifiers
))
347 (and (null qualifiers
)
348 (not primary-checked-p
)
349 (not (null standard-method
))
350 (not (eq standard-method method
))))
352 when
(null qualifiers
) do
353 (setq primary-checked-p t
)))
355 (defun fallback-generator (ctor ii-methods si-methods
)
356 (declare (ignore ii-methods si-methods
))
357 `(lambda ,(make-ctor-parameter-list ctor
)
358 ;; The CTOR MAKE-INSTANCE optimization only kicks in when the
359 ;; first argument to MAKE-INSTANCE is a constant symbol: by
360 ;; calling it with a class, as here, we inhibit the optimization,
361 ;; so removing the possibility of endless recursion. -- CSR,
363 (make-instance ,(ctor-class ctor
)
364 ,@(quote-plist-keys (ctor-initargs ctor
)))))
366 (defun optimizing-generator (ctor ii-methods si-methods
)
367 (multiple-value-bind (locations names body before-method-p
)
368 (fake-initialization-emf ctor ii-methods si-methods
)
369 (let ((wrapper (class-wrapper (ctor-class ctor
))))
371 `(lambda ,(make-ctor-parameter-list ctor
)
372 (declare #.
*optimize-speed
*)
374 (when (layout-invalid ,wrapper
)
375 (install-initial-constructor ,ctor
)
376 (return (funcall ,ctor
,@(make-ctor-parameter-list ctor
))))
377 ,(wrap-in-allocate-forms ctor body before-method-p
)))
381 ;;; Return a form wrapped around BODY that allocates an instance
382 ;;; constructed by CTOR. BEFORE-METHOD-P set means we have to run
383 ;;; before-methods, in which case we initialize instance slots to
384 ;;; +SLOT-UNBOUND+. The resulting form binds the local variables
385 ;;; .INSTANCE. to the instance, and .SLOTS. to the instance's slot
386 ;;; vector around BODY.
387 (defun wrap-in-allocate-forms (ctor body before-method-p
)
388 (let* ((class (ctor-class ctor
))
389 (wrapper (class-wrapper class
))
390 (allocation-function (raw-instance-allocator class
))
391 (slots-fetcher (slots-fetcher class
)))
392 (if (eq allocation-function
'allocate-standard-instance
)
393 `(let ((.instance.
(%make-standard-instance nil
394 (get-instance-hash-code)))
396 ,(layout-length wrapper
)
397 ,@(when before-method-p
398 '(:initial-element
+slot-unbound
+)))))
399 (setf (std-instance-wrapper .instance.
) ,wrapper
)
400 (setf (std-instance-slots .instance.
) .slots.
)
403 `(let* ((.instance.
(,allocation-function
,wrapper
))
404 (.slots.
(,slots-fetcher .instance.
)))
405 (declare (ignorable .slots.
))
409 ;;; Return a form for invoking METHOD with arguments from ARGS. As
410 ;;; can be seen in METHOD-FUNCTION-FROM-FAST-FUNCTION, method
411 ;;; functions look like (LAMBDA (ARGS NEXT-METHODS) ...). We could
412 ;;; call fast method functions directly here, but benchmarks show that
413 ;;; there's no speed to gain, so lets avoid the hair here.
414 (defmacro invoke-method
(method args
)
415 `(funcall ,(method-function method
) ,args
()))
417 ;;; Return a form that is sort of an effective method comprising all
418 ;;; calls to INITIALIZE-INSTANCE and SHARED-INITIALIZE that would
419 ;;; normally have taken place when calling MAKE-INSTANCE.
420 (defun fake-initialization-emf (ctor ii-methods si-methods
)
421 (multiple-value-bind (ii-around ii-before ii-primary ii-after
)
422 (standard-sort-methods ii-methods
)
423 (declare (ignore ii-primary
))
424 (multiple-value-bind (si-around si-before si-primary si-after
)
425 (standard-sort-methods si-methods
)
426 (declare (ignore si-primary
))
427 (aver (and (null ii-around
) (null si-around
)))
428 (let ((initargs (ctor-initargs ctor
)))
429 (multiple-value-bind (locations names bindings vars defaulting-initargs body
)
430 (slot-init-forms ctor
(or ii-before si-before
))
435 (declare (ignorable ,@vars
))
436 (let (,@(when (or ii-before ii-after
)
438 (list .instance.
,@(quote-plist-keys initargs
) ,@defaulting-initargs
))))
439 ,@(when (or si-before si-after
)
441 (list .instance. t
,@(quote-plist-keys initargs
) ,@defaulting-initargs
)))))
442 ,@(loop for method in ii-before
443 collect
`(invoke-method ,method .ii-args.
))
444 ,@(loop for method in si-before
445 collect
`(invoke-method ,method .si-args.
))
447 ,@(loop for method in si-after
448 collect
`(invoke-method ,method .si-args.
))
449 ,@(loop for method in ii-after
450 collect
`(invoke-method ,method .ii-args.
))))
451 (or ii-before si-before
)))))))
453 ;;; Return four values from APPLICABLE-METHODS: around methods, before
454 ;;; methods, the applicable primary method, and applicable after
455 ;;; methods. Before and after methods are sorted in the order they
457 (defun standard-sort-methods (applicable-methods)
458 (loop for method in applicable-methods
459 as qualifiers
= (method-qualifiers method
)
461 collect method into primary
462 else if
(eq :around
(car qualifiers
))
463 collect method into around
464 else if
(eq :after
(car qualifiers
))
465 collect method into after
466 else if
(eq :before
(car qualifiers
))
467 collect method into before
469 (return (values around before
(first primary
) (reverse after
)))))
471 (defmacro with-type-checked
((type safe-p
) &body body
)
473 ;; To handle FUNCTION types reasonable, we use SAFETY 3 and
474 ;; THE instead of e.g. CHECK-TYPE.
476 (declare (optimize (safety 3)))
477 (the ,type
(progn ,@body
)))
480 ;;; Return as multiple values bindings for default initialization
481 ;;; arguments, variable names, defaulting initargs and a body for
482 ;;; initializing instance and class slots of an object costructed by
483 ;;; CTOR. The variable .SLOTS. is assumed to bound to the instance's
484 ;;; slot vector. BEFORE-METHOD-P T means before-methods will be
485 ;;; called, which means that 1) other code will initialize instance
486 ;;; slots to +SLOT-UNBOUND+ before the before-methods are run, and
487 ;;; that we have to check if these before-methods have set slots.
488 (defun slot-init-forms (ctor before-method-p
)
489 (let* ((class (ctor-class ctor
))
490 (initargs (ctor-initargs ctor
))
491 (initkeys (plist-keys initargs
))
492 (safe-p (ctor-safe-p ctor
))
494 (make-array (layout-length (class-wrapper class
))
495 :initial-element nil
))
498 (defaulting-initargs ())
499 (default-initargs (class-default-initargs class
))
501 (compute-initarg-locations
502 class
(append initkeys
(mapcar #'car default-initargs
)))))
503 (labels ((initarg-locations (initarg)
504 (cdr (assoc initarg initarg-locations
:test
#'eq
)))
505 (initializedp (location)
508 (assoc location class-inits
:test
#'eq
))
510 (not (null (aref slot-vector location
))))
511 (t (bug "Weird location in ~S" 'slot-init-forms
))))
512 (class-init (location kind val type
)
513 (aver (consp location
))
514 (unless (initializedp location
)
515 (push (list location kind val type
) class-inits
)))
516 (instance-init (location kind val type
)
517 (aver (integerp location
))
518 (unless (initializedp location
)
519 (setf (aref slot-vector location
) (list kind val type
))))
520 (default-init-var-name (i)
521 (let ((ps #(.d0. .d1. .d2. .d3. .d4. .d5.
)))
522 (if (array-in-bounds-p ps i
)
524 (format-symbol *pcl-package
* ".D~D." i
))))
525 (location-var-name (i)
526 (let ((ls #(.l0. .l1. .l2. .l3. .l4. .l5.
)))
527 (if (array-in-bounds-p ls i
)
529 (format-symbol *pcl-package
* ".L~D." i
)))))
530 ;; Loop over supplied initargs and values and record which
531 ;; instance and class slots they initialize.
532 (loop for
(key value
) on initargs by
#'cddr
533 as kind
= (if (constantp value
) 'constant
'param
)
534 as locations
= (initarg-locations key
)
535 do
(loop for
(location . type
) in locations
536 do
(if (consp location
)
537 (class-init location kind value type
)
538 (instance-init location kind value type
))))
539 ;; Loop over default initargs of the class, recording
540 ;; initializations of slots that have not been initialized
541 ;; above. Default initargs which are not in the supplied
542 ;; initargs are treated as if they were appended to supplied
543 ;; initargs, that is, their values must be evaluated even
544 ;; if not actually used for initializing a slot.
545 (loop for
(key initform initfn
) in default-initargs and i from
0
546 unless
(member key initkeys
:test
#'eq
)
547 do
(let* ((kind (if (constantp initform
) 'constant
'var
))
548 (init (if (eq kind
'var
) initfn initform
)))
551 (push (list 'quote key
) defaulting-initargs
)
552 (push initform defaulting-initargs
))
554 (push (list 'quote key
) defaulting-initargs
)
555 (push (default-init-var-name i
) defaulting-initargs
)))
557 (let ((init-var (default-init-var-name i
)))
559 (push (cons init-var initfn
) default-inits
)))
560 (loop for
(location . type
) in
(initarg-locations key
)
561 do
(if (consp location
)
562 (class-init location kind init type
)
563 (instance-init location kind init type
)))))
564 ;; Loop over all slots of the class, filling in the rest from
566 (loop for slotd in
(class-slots class
)
567 as location
= (slot-definition-location slotd
)
568 as type
= (slot-definition-type slotd
)
569 as allocation
= (slot-definition-allocation slotd
)
570 as initfn
= (slot-definition-initfunction slotd
)
571 as initform
= (slot-definition-initform slotd
) do
572 (unless (or (eq allocation
:class
)
574 (initializedp location
))
575 (if (constantp initform
)
576 (instance-init location
'initform initform type
)
577 (instance-init location
'initform
/initfn initfn type
))))
578 ;; Generate the forms for initializing instance and class slots.
579 (let ((instance-init-forms
580 (loop for slot-entry across slot-vector and i from
0
581 as
(kind value type
) = slot-entry collect
584 (unless before-method-p
585 `(setf (clos-slots-ref .slots.
,i
) +slot-unbound
+)))
587 `(setf (clos-slots-ref .slots.
,i
)
588 (with-type-checked (,type
,safe-p
)
591 `(setf (clos-slots-ref .slots.
,i
)
592 (with-type-checked (,type
,safe-p
)
596 `(when (eq (clos-slots-ref .slots.
,i
)
598 (setf (clos-slots-ref .slots.
,i
)
599 (with-type-checked (,type
,safe-p
)
601 `(setf (clos-slots-ref .slots.
,i
)
602 (with-type-checked (,type
,safe-p
)
606 `(when (eq (clos-slots-ref .slots.
,i
)
608 (setf (clos-slots-ref .slots.
,i
)
609 (with-type-checked (,type
,safe-p
)
610 ',(constant-form-value value
))))
611 `(setf (clos-slots-ref .slots.
,i
)
612 (with-type-checked (,type
,safe-p
)
613 ',(constant-form-value value
)))))
615 `(setf (clos-slots-ref .slots.
,i
)
616 (with-type-checked (,type
,safe-p
)
617 ',(constant-form-value value
))))))))
618 ;; we are not allowed to modify QUOTEd locations, so we can't
619 ;; generate code like (setf (cdr ',location) arg). Instead,
620 ;; we have to do (setf (cdr .L0.) arg) and arrange for .L0. to
621 ;; be bound to the location.
622 (multiple-value-bind (names locations class-init-forms
)
623 (loop for
(location kind value type
) in class-inits
625 for name
= (location-var-name i
)
626 collect name into names
627 collect location into locations
628 collect
`(setf (cdr ,name
)
629 (with-type-checked (,type
,safe-p
)
631 (constant `',(constant-form-value value
))
632 ((param var
) `,value
)
633 (initfn `(funcall ,value
)))))
634 into class-init-forms
635 finally
(return (values names locations class-init-forms
)))
636 (multiple-value-bind (vars bindings
)
637 (loop for
(var . initfn
) in
(nreverse default-inits
)
638 collect var into vars
639 collect
`(,var
(funcall ,initfn
)) into bindings
640 finally
(return (values vars bindings
)))
641 (values locations names
643 (nreverse defaulting-initargs
)
644 `(,@(delete nil instance-init-forms
)
645 ,@class-init-forms
))))))))
647 ;;; Return an alist of lists (KEY (LOCATION . TYPE-SPECIFIER) ...)
648 ;;; telling, for each key in INITKEYS, which locations the initarg
649 ;;; initializes and the associated type with the location. CLASS is
650 ;;; the class of the instance being initialized.
651 (defun compute-initarg-locations (class initkeys
)
652 (loop with slots
= (class-slots class
)
653 for key in initkeys collect
654 (loop for slot in slots
655 if
(memq key
(slot-definition-initargs slot
))
656 collect
(cons (slot-definition-location slot
)
657 (slot-definition-type slot
))
660 collect slot into remaining-slots
662 (setq slots remaining-slots
)
663 (return (cons key locations
)))))
666 ;;; *******************************
667 ;;; External Entry Points ********
668 ;;; *******************************
670 (defun update-ctors (reason &key class name generic-function method
)
671 (labels ((reset (class &optional ri-cache-p
(ctorsp t
))
673 (dolist (ctor (plist-value class
'ctors
))
674 (install-initial-constructor ctor
)))
676 (setf (plist-value class
'ri-initargs
) ()))
677 (dolist (subclass (class-direct-subclasses class
))
678 (reset subclass ri-cache-p ctorsp
))))
680 ;; CLASS must have been specified.
681 (finalize-inheritance
683 ;; NAME must have been specified.
685 (loop for ctor in
*all-ctors
*
686 when
(eq (ctor-class-name ctor
) name
) do
687 (when (ctor-class ctor
)
688 (reset (ctor-class ctor
)))
690 ;; GENERIC-FUNCTION and METHOD must have been specified.
691 ((add-method remove-method
)
692 (flet ((class-of-1st-method-param (method)
693 (type-class (first (method-specializers method
)))))
694 (case (generic-function-name generic-function
)
695 ((make-instance allocate-instance
696 initialize-instance shared-initialize
)
697 (reset (class-of-1st-method-param method
) t t
))
698 ((reinitialize-instance)
699 (reset (class-of-1st-method-param method
) t nil
))
700 (t (when (or (eq (generic-function-name generic-function
)
701 'slot-boundp-using-class
)
702 (equal (generic-function-name generic-function
)
703 '(setf slot-value-using-class
)))
704 ;; this looks awfully expensive, but given that one
705 ;; can specialize on the SLOTD argument, nothing is
706 ;; safe. -- CSR, 2004-07-12
707 (reset (find-class 'standard-object
))))))))))
709 (defun precompile-ctors ()
710 (dolist (ctor *all-ctors
*)
711 (when (null (ctor-class ctor
))
712 (let ((class (find-class (ctor-class-name ctor
) nil
)))
713 (when (and class
(class-finalized-p class
))
714 (install-optimized-constructor ctor
))))))
716 (defun check-ri-initargs (instance initargs
)
717 (let* ((class (class-of instance
))
718 (keys (plist-keys initargs
))
719 (cached (assoc keys
(plist-value class
'ri-initargs
)
725 ;; FIXME: give CHECK-INITARGS-1 and friends a
726 ;; more mnemonic name and (possibly) a nicer,
727 ;; more orthogonal interface.
730 (list (list* 'reinitialize-instance instance initargs
)
731 (list* 'shared-initialize instance nil initargs
))
733 (setf (plist-value class
'ri-initargs
)
734 (acons keys invalid cached
))
737 (error 'initarg-error
:class class
:initargs invalid-keys
))))