Work at SourceForge, help us to make it a better place! We have an immediate need for a Support Technician in our San Francisco or Denver office.

Close

[ea1220]: src / pcl / slots-boot.lisp Maximize Restore History

Download this file

slots-boot.lisp    615 lines (587 with data), 22.6 kB

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
;;;; This software is part of the SBCL system. See the README file for
;;;; more information.
;;;; This software is derived from software originally released by Xerox
;;;; Corporation. Copyright and release statements follow. Later modifications
;;;; to the software are in the public domain and are provided with
;;;; absolutely no warranty. See the COPYING and CREDITS files for more
;;;; information.
;;;; copyright information from original PCL sources:
;;;;
;;;; Copyright (c) 1985, 1986, 1987, 1988, 1989, 1990 Xerox Corporation.
;;;; All rights reserved.
;;;;
;;;; Use and copying of this software and preparation of derivative works based
;;;; upon this software are permitted. Any distribution of this software or
;;;; derivative works must comply with all applicable United States export
;;;; control laws.
;;;;
;;;; This software is made available AS IS, and Xerox Corporation makes no
;;;; warranty about the software, its performance or its conformity to any
;;;; specification.
(in-package "SB-PCL")
(defun ensure-accessor (type fun-name slot-name)
(labels ((slot-missing-fun (slot-name type)
(let* ((method-type (ecase type
(slot-value 'reader-method)
(setf 'writer-method)
(slot-boundp 'boundp-method)))
(initargs
(copy-tree
(ecase type
(slot-value
(make-method-function
(lambda (obj)
(values
(slot-missing (class-of obj) obj slot-name
'slot-value)))))
(slot-boundp
(make-method-function
(lambda (obj)
(not (not
(slot-missing (class-of obj) obj slot-name
'slot-boundp))))))
(setf
(make-method-function
(lambda (val obj)
(slot-missing (class-of obj) obj slot-name
'setf val)
val)))))))
(setf (getf (getf initargs :plist) :slot-name-lists)
(list (list nil slot-name)))
(setf (getf (getf initargs :plist) :pv-table-symbol)
(gensym))
(list* :method-spec (list method-type 'slot-object slot-name)
initargs)))
(add-slot-missing-method (gf slot-name type)
(multiple-value-bind (class lambda-list specializers)
(ecase type
(slot-value
(values 'standard-reader-method
'(object)
(list *the-class-slot-object*)))
(slot-boundp
(values 'standard-boundp-method
'(object)
(list *the-class-slot-object*)))
(setf
(values 'standard-writer-method
'(new-value object)
(list *the-class-t* *the-class-slot-object*))))
(add-method gf (make-a-method class
()
lambda-list
specializers
(slot-missing-fun slot-name type)
"generated slot-missing method"
slot-name)))))
(unless (fboundp fun-name)
(let ((gf (ensure-generic-function
fun-name
:lambda-list (ecase type
((reader boundp) '(object))
(writer '(new-value object))))))
(ecase type
(reader (add-slot-missing-method gf slot-name 'slot-value))
(boundp (add-slot-missing-method gf slot-name 'slot-boundp))
(writer (add-slot-missing-method gf slot-name 'setf)))
(setf (plist-value gf 'slot-missing-method) t))
t)))
(defmacro accessor-slot-value (object slot-name)
(aver (constantp slot-name))
(let* ((slot-name (eval slot-name))
(reader-name (slot-reader-name slot-name)))
`(let ((.ignore. (load-time-value
(ensure-accessor 'reader ',reader-name ',slot-name))))
(declare (ignore .ignore.))
(truly-the (values t &optional)
(funcall #',reader-name ,object)))))
(defmacro accessor-set-slot-value (object slot-name new-value &environment env)
(aver (constantp slot-name))
(setq object (macroexpand object env))
(setq slot-name (macroexpand slot-name env))
(let* ((slot-name (eval slot-name))
(bindings (unless (or (constantp new-value) (atom new-value))
(let ((object-var (gensym)))
(prog1 `((,object-var ,object))
(setq object object-var)))))
(writer-name (slot-writer-name slot-name))
(form
`(let ((.ignore.
(load-time-value
(ensure-accessor 'writer ',writer-name ',slot-name)))
(.new-value. ,new-value))
(declare (ignore .ignore.))
(funcall #',writer-name .new-value. ,object)
.new-value.)))
(if bindings
`(let ,bindings ,form)
form)))
(defmacro accessor-slot-boundp (object slot-name)
(aver (constantp slot-name))
(let* ((slot-name (eval slot-name))
(boundp-name (slot-boundp-name slot-name)))
`(let ((.ignore. (load-time-value
(ensure-accessor 'boundp ',boundp-name ',slot-name))))
(declare (ignore .ignore.))
(funcall #',boundp-name ,object))))
(defun make-structure-slot-boundp-function (slotd)
(declare (ignore slotd))
(lambda (object)
(declare (ignore object))
t))
(define-condition instance-structure-protocol-error
(reference-condition error)
((slotd :initarg :slotd :reader instance-structure-protocol-error-slotd)
(fun :initarg :fun :reader instance-structure-protocol-error-fun))
(:report
(lambda (c s)
(format s "~@<The slot ~S has neither ~S nor ~S ~
allocation, so it can't be ~A by the default ~
~S method.~@:>"
(instance-structure-protocol-error-slotd c)
:instance :class
(cond
((member (instance-structure-protocol-error-fun c)
'(slot-value-using-class slot-boundp-using-class))
"read")
(t "written"))
(instance-structure-protocol-error-fun c)))))
(defun instance-structure-protocol-error (slotd fun)
(error 'instance-structure-protocol-error
:slotd slotd :fun fun
:references (list `(:amop :generic-function ,fun)
'(:amop :section (5 5 3)))))
(defun get-optimized-std-accessor-method-function (class slotd name)
(cond
((structure-class-p class)
(ecase name
(reader (slot-definition-internal-reader-function slotd))
(writer (slot-definition-internal-writer-function slotd))
(boundp (make-structure-slot-boundp-function slotd))))
((condition-class-p class)
(ecase name
(reader (slot-definition-reader-function slotd))
(writer (slot-definition-writer-function slotd))
(boundp (slot-definition-boundp-function slotd))))
(t
(let* ((fsc-p (cond ((standard-class-p class) nil)
((funcallable-standard-class-p class) t)
((std-class-p class)
;; Shouldn't be using the optimized-std-accessors
;; in this case.
#+nil (format t "* warning: ~S ~S~% ~S~%"
name slotd class)
nil)
(t (error "~S is not a STANDARD-CLASS." class))))
(slot-name (slot-definition-name slotd))
(location (slot-definition-location slotd))
(function (ecase name
(reader #'make-optimized-std-reader-method-function)
(writer #'make-optimized-std-writer-method-function)
(boundp #'make-optimized-std-boundp-method-function)))
;; KLUDGE: we need this slightly hacky calling convention
;; for these functions for bootstrapping reasons: see
;; !BOOTSTRAP-MAKE-SLOT-DEFINITION in braid.lisp. -- CSR,
;; 2004-07-12
(value (funcall function fsc-p slotd slot-name location)))
(declare (type function function))
(values value (slot-definition-location slotd))))))
(defun make-optimized-std-reader-method-function
(fsc-p slotd slot-name location)
(declare #.*optimize-speed*)
(set-fun-name
(etypecase location
(fixnum
(if fsc-p
(lambda (instance)
(check-obsolete-instance instance)
(let ((value (clos-slots-ref (fsc-instance-slots instance)
location)))
(if (eq value +slot-unbound+)
(values
(slot-unbound (class-of instance) instance slot-name))
value)))
(lambda (instance)
(check-obsolete-instance instance)
(let ((value (clos-slots-ref (std-instance-slots instance)
location)))
(if (eq value +slot-unbound+)
(values
(slot-unbound (class-of instance) instance slot-name))
value)))))
(cons
(lambda (instance)
(check-obsolete-instance instance)
(let ((value (cdr location)))
(if (eq value +slot-unbound+)
(values (slot-unbound (class-of instance) instance slot-name))
value))))
(null
(lambda (instance)
(instance-structure-protocol-error slotd 'slot-value-using-class))))
`(reader ,slot-name)))
(defun make-optimized-std-writer-method-function
(fsc-p slotd slot-name location)
(declare #.*optimize-speed*)
(let ((type (or (not slotd) (slot-definition-type slotd))))
(set-fun-name
(etypecase location
(fixnum (if fsc-p
(if (eq type t)
(lambda (nv instance)
(check-obsolete-instance instance)
(setf (clos-slots-ref (fsc-instance-slots instance)
location)
nv))
(lambda (nv instance)
(check-obsolete-instance instance)
(unless (typep nv type)
(error 'type-error :datum nv :expected-type type))
(setf (clos-slots-ref (fsc-instance-slots instance)
location)
nv)))
(if (eq type t)
(lambda (nv instance)
(check-obsolete-instance instance)
(setf (clos-slots-ref (std-instance-slots instance)
location)
nv))
(lambda (nv instance)
(check-obsolete-instance instance)
(unless (typep nv type)
(error 'type-error :datum nv :expected-type type))
(setf (clos-slots-ref (std-instance-slots instance)
location)
nv)))))
(cons (if (eq type t)
(lambda (nv instance)
(check-obsolete-instance instance)
(setf (cdr location) nv))
(lambda (nv instance)
(check-obsolete-instance instance)
(unless (typep nv type)
(error 'type-error :datum nv :expected-type type))
(setf (cdr location) nv))))
(null
(lambda (nv instance)
(declare (ignore nv))
(instance-structure-protocol-error slotd
'(setf slot-value-using-class)))))
`(writer ,slot-name))))
(defun make-optimized-std-boundp-method-function
(fsc-p slotd slot-name location)
(declare #.*optimize-speed*)
(set-fun-name
(etypecase location
(fixnum (if fsc-p
(lambda (instance)
(check-obsolete-instance instance)
(not (eq (clos-slots-ref (fsc-instance-slots instance)
location)
+slot-unbound+)))
(lambda (instance)
(check-obsolete-instance instance)
(not (eq (clos-slots-ref (std-instance-slots instance)
location)
+slot-unbound+)))))
(cons (lambda (instance)
(check-obsolete-instance instance)
(not (eq (cdr location) +slot-unbound+))))
(null
(lambda (instance)
(instance-structure-protocol-error slotd 'slot-boundp-using-class))))
`(boundp ,slot-name)))
(defun make-optimized-structure-slot-value-using-class-method-function
(function)
(declare (type function function))
(lambda (class object slotd)
(declare (ignore class slotd))
(funcall function object)))
(defun make-optimized-structure-setf-slot-value-using-class-method-function
(function)
(declare (type function function))
(lambda (nv class object slotd)
(declare (ignore class slotd))
(funcall function nv object)))
(defun make-optimized-structure-slot-boundp-using-class-method-function ()
(lambda (class object slotd)
(declare (ignore class object slotd))
t))
(defun get-optimized-std-slot-value-using-class-method-function
(class slotd name)
(cond
((structure-class-p class)
(ecase name
(reader (make-optimized-structure-slot-value-using-class-method-function
(slot-definition-internal-reader-function slotd)))
(writer (make-optimized-structure-setf-slot-value-using-class-method-function
(slot-definition-internal-writer-function slotd)))
(boundp (make-optimized-structure-slot-boundp-using-class-method-function))))
((condition-class-p class)
(ecase name
(reader
(let ((fun (slot-definition-reader-function slotd)))
(declare (type function fun))
(lambda (class object slotd)
(declare (ignore class slotd))
(funcall fun object))))
(writer
(let ((fun (slot-definition-writer-function slotd)))
(declare (type function fun))
(lambda (new-value class object slotd)
(declare (ignore class slotd))
(funcall fun new-value object))))
(boundp
(let ((fun (slot-definition-boundp-function slotd)))
(declare (type function fun))
(lambda (class object slotd)
(declare (ignore class slotd))
(funcall fun object))))))
(t
(let* ((fsc-p (cond ((standard-class-p class) nil)
((funcallable-standard-class-p class) t)
(t (error "~S is not a standard-class" class))))
(function
(ecase name
(reader
#'make-optimized-std-slot-value-using-class-method-function)
(writer
#'make-optimized-std-setf-slot-value-using-class-method-function)
(boundp
#'make-optimized-std-slot-boundp-using-class-method-function))))
(declare (type function function))
(values (funcall function fsc-p slotd)
(slot-definition-location slotd))))))
(defun make-optimized-std-slot-value-using-class-method-function (fsc-p slotd)
(declare #.*optimize-speed*)
(let ((location (slot-definition-location slotd))
(slot-name (slot-definition-name slotd)))
(etypecase location
(fixnum (if fsc-p
(lambda (class instance slotd)
(declare (ignore slotd))
(check-obsolete-instance instance)
(let ((value (clos-slots-ref (fsc-instance-slots instance)
location)))
(if (eq value +slot-unbound+)
(values (slot-unbound class instance slot-name))
value)))
(lambda (class instance slotd)
(declare (ignore slotd))
(check-obsolete-instance instance)
(let ((value (clos-slots-ref (std-instance-slots instance)
location)))
(if (eq value +slot-unbound+)
(values (slot-unbound class instance slot-name))
value)))))
(cons (lambda (class instance slotd)
(declare (ignore slotd))
(check-obsolete-instance instance)
(let ((value (cdr location)))
(if (eq value +slot-unbound+)
(values (slot-unbound class instance slot-name))
value))))
(null
(lambda (class instance slotd)
(declare (ignore class instance))
(instance-structure-protocol-error slotd 'slot-value-using-class))))))
(defun make-optimized-std-setf-slot-value-using-class-method-function
(fsc-p slotd)
(declare #.*optimize-speed*)
(let ((location (slot-definition-location slotd))
(type (slot-definition-type slotd)))
(etypecase location
(fixnum
(if fsc-p
(if (eq type t)
(lambda (nv class instance slotd)
(declare (ignore class slotd))
(check-obsolete-instance instance)
(setf (clos-slots-ref (fsc-instance-slots instance) location)
nv))
(lambda (nv class instance slotd)
(declare (ignore class slotd))
(check-obsolete-instance instance)
;; FIXME: this is going to make a mockery of the
;; "optimized" bit. Full call to typep on every slot
;; write? Still, let's see if it works...
(unless (typep nv type)
(error 'type-error :datum nv :expected-type type))
(setf (clos-slots-ref (fsc-instance-slots instance) location)
nv)))
(if (eq type t)
(lambda (nv class instance slotd)
(declare (ignore class slotd))
(check-obsolete-instance instance)
(setf (clos-slots-ref (std-instance-slots instance) location)
nv))
(lambda (nv class instance slotd)
(declare (ignore class slotd))
(check-obsolete-instance instance)
(unless (typep nv type)
(error 'type-error :datum nv :expected-type type))
(setf (clos-slots-ref (std-instance-slots instance) location)
nv)))))
(cons (if (eq type t)
(lambda (nv class instance slotd)
(declare (ignore class slotd))
(check-obsolete-instance instance)
(setf (cdr location) nv))
(lambda (nv class instance slotd)
(declare (ignore class slotd))
(check-obsolete-instance instance)
(unless (typep nv type)
(error 'type-error :datum nv :expected-type type))
(setf (cdr location) nv))))
(null (lambda (nv class instance slotd)
(declare (ignore nv class instance))
(instance-structure-protocol-error
slotd '(setf slot-value-using-class)))))))
(defun make-optimized-std-slot-boundp-using-class-method-function
(fsc-p slotd)
(declare #.*optimize-speed*)
(let ((location (slot-definition-location slotd)))
(etypecase location
(fixnum
(if fsc-p
(lambda (class instance slotd)
(declare (ignore class slotd))
(check-obsolete-instance instance)
(not (eq (clos-slots-ref (fsc-instance-slots instance) location)
+slot-unbound+)))
(lambda (class instance slotd)
(declare (ignore class slotd))
(check-obsolete-instance instance)
(not (eq (clos-slots-ref (std-instance-slots instance) location)
+slot-unbound+)))))
(cons (lambda (class instance slotd)
(declare (ignore class slotd))
(check-obsolete-instance instance)
(not (eq (cdr location) +slot-unbound+))))
(null
(lambda (class instance slotd)
(declare (ignore class instance))
(instance-structure-protocol-error slotd
'slot-boundp-using-class))))))
(defun get-accessor-from-svuc-method-function (class slotd sdfun name)
(macrolet ((emf-funcall (emf &rest args)
`(invoke-effective-method-function ,emf nil ,@args)))
(set-fun-name
(case name
(reader (lambda (instance)
(emf-funcall sdfun class instance slotd)))
(writer (lambda (nv instance)
(emf-funcall sdfun nv class instance slotd)))
(boundp (lambda (instance)
(emf-funcall sdfun class instance slotd))))
`(,name ,(class-name class) ,(slot-definition-name slotd)))))
(defun make-internal-reader-method-function (class-name slot-name)
(list* :method-spec `(internal-reader-method ,class-name ,slot-name)
(make-method-function
(lambda (instance)
(let ((wrapper (get-instance-wrapper-or-nil instance)))
(if wrapper
(let* ((class (wrapper-class* wrapper))
(index (or (instance-slot-index wrapper slot-name)
(assq slot-name
(wrapper-class-slots wrapper)))))
(typecase index
(fixnum
(let ((value (clos-slots-ref (get-slots instance)
index)))
(if (eq value +slot-unbound+)
(values (slot-unbound (class-of instance)
instance
slot-name))
value)))
(cons
(let ((value (cdr index)))
(if (eq value +slot-unbound+)
(values (slot-unbound (class-of instance)
instance
slot-name))
value)))
(t
(error "~@<The wrapper for class ~S does not have ~
the slot ~S~@:>"
class slot-name))))
(slot-value instance slot-name)))))))
(defun make-std-reader-method-function (class-name slot-name)
(let* ((pv-table-symbol (gensym))
(initargs (copy-tree
(make-method-function
(lambda (instance)
(pv-binding1 (.pv. .calls.
(symbol-value pv-table-symbol)
(instance) (instance-slots))
(instance-read-internal
.pv. instance-slots 1
(slot-value instance slot-name))))))))
(setf (getf (getf initargs :plist) :slot-name-lists)
(list (list nil slot-name)))
(setf (getf (getf initargs :plist) :pv-table-symbol) pv-table-symbol)
(list* :method-spec `(reader-method ,class-name ,slot-name)
initargs)))
(defun make-std-writer-method-function (class-name slot-name)
(let* ((pv-table-symbol (gensym))
(type (or (not (eq *boot-state* 'complete))
(let ((slotd (find-slot-definition (find-class class-name) slot-name)))
(or (not slotd) (slot-definition-type slotd)))))
;; FIXME: how expensive is this?
(typecheckfun (lambda (nv) (unless (typep nv type)
(error 'type-error
:datum nv :expected-type type))))
(initargs (copy-tree
(if (eq type t)
(make-method-function
(lambda (nv instance)
(pv-binding1 (.pv. .calls.
(symbol-value pv-table-symbol)
(instance) (instance-slots))
(instance-write-internal
.pv. instance-slots 1 nv
(setf (slot-value instance slot-name) nv)))))
(make-method-function
(lambda (nv instance)
(funcall typecheckfun nv)
(pv-binding1 (.pv. .calls.
(symbol-value pv-table-symbol)
(instance) (instance-slots))
(instance-write-internal
.pv. instance-slots 1 nv
(setf (slot-value instance slot-name) nv)))))))))
(setf (getf (getf initargs :plist) :slot-name-lists)
(list nil (list nil slot-name)))
(setf (getf (getf initargs :plist) :pv-table-symbol) pv-table-symbol)
(list* :method-spec `(writer-method ,class-name ,slot-name)
initargs)))
(defun make-std-boundp-method-function (class-name slot-name)
(let* ((pv-table-symbol (gensym))
(initargs (copy-tree
(make-method-function
(lambda (instance)
(pv-binding1 (.pv. .calls.
(symbol-value pv-table-symbol)
(instance) (instance-slots))
(instance-boundp-internal
.pv. instance-slots 1
(slot-boundp instance slot-name))))))))
(setf (getf (getf initargs :plist) :slot-name-lists)
(list (list nil slot-name)))
(setf (getf (getf initargs :plist) :pv-table-symbol) pv-table-symbol)
(list* :method-spec `(boundp-method ,class-name ,slot-name)
initargs)))
(defun initialize-internal-slot-gfs (slot-name &optional type)
(macrolet ((frob (type name-fun add-fun ll)
`(when (or (null type) (eq type ',type))
(let* ((name (,name-fun slot-name))
(gf (ensure-generic-function name
:lambda-list ',ll))
(methods (generic-function-methods gf)))
(when (or (null methods)
(plist-value gf 'slot-missing-method))
(setf (plist-value gf 'slot-missing-method) nil)
(,add-fun *the-class-slot-object* gf slot-name))))))
(frob reader slot-reader-name add-reader-method (object))
(frob writer slot-writer-name add-writer-method (new-value object))
(frob boundp slot-boundp-name add-boundp-method (object))))