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closer-lispworks.lisp
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(in-package :closer-mop)
;; We need a new standard-class for various things.
(defclass standard-class (cl:standard-class) ())
(define-validate-superclass-method standard-class cl:standard-class)
;; We need a new funcallable-standard-class for various things.
(defclass funcallable-standard-class (clos:funcallable-standard-class) ())
(define-validate-superclass-method funcallable-standard-class clos:funcallable-standard-class)
#-lispworks4
(cl:defmethod validate-superclass
((class funcallable-standard-class)
(superclass (eql (find-class 'funcallable-standard-object))))
t)
;; We also need a new funcallable-standard-object because the default one
;; is not an instance of clos:funcallable-standard-class.
#+lispworks4
(defclass funcallable-standard-object (clos:funcallable-standard-object) ()
(:metaclass clos:funcallable-standard-class))
;; The following code ensures that possibly incorrect lists of direct
;; superclasses are corrected.
#+lispworks4
(defun modify-superclasses (direct-superclasses &optional (standardp t))
(if (null direct-superclasses)
(list (if standardp
(find-class 'standard-object)
(find-class 'funcallable-standard-object)))
(let ((standard-object (if standardp
(find-class 'standard-object)
(find-class 'clos:funcallable-standard-object))))
(if (eq (car (last direct-superclasses)) standard-object)
(if standardp
direct-superclasses
(append (butlast direct-superclasses)
(list (find-class 'funcallable-standard-object))))
(remove standard-object direct-superclasses)))))
;; During class re/initialization, we take care of the following things:
;; - Optimization of slot accessors is deactivated.
;; - Lists of direct superclasses are corrected.
;; - Removal of direct subclasses.
(defun optimize-slot-access-p (class)
(flet ((applicablep (specializer)
(if (consp specializer)
(eql class (eql-specializer-object specializer))
(subclassp (class-of class) specializer))))
(and (loop for method in (generic-function-methods #'slot-value-using-class)
never (applicablep (first (method-specializers method))))
(loop for method in (generic-function-methods #'(setf slot-value-using-class))
never (applicablep (second (method-specializers method)))))))
(cl:defmethod initialize-instance :around
((class standard-class) &rest initargs
#+lispworks4 &key
#+lispworks4 (direct-superclasses ()))
(apply #'call-next-method class
#+lispworks4 :direct-superclasses
#+lispworks4 (modify-superclasses direct-superclasses)
:optimize-slot-access (optimize-slot-access-p class)
initargs))
(cl:defmethod reinitialize-instance :around
((class standard-class) &rest initargs
#+lispworks4 &key
#+lispworks4 (direct-superclasses () direct-superclasses-p))
#+lispworks4
(progn
(when direct-superclasses-p
(setq direct-superclasses (modify-superclasses direct-superclasses))
(loop for superclass in (copy-list (class-direct-superclasses class))
unless (member superclass direct-superclasses)
do (remove-direct-subclass superclass class)))
(if direct-superclasses-p
(apply #'call-next-method class
:direct-superclasses direct-superclasses
:optimize-slot-access (optimize-slot-access-p class)
initargs)
(apply #'call-next-method class
:optimize-slot-access (optimize-slot-access-p class)
initargs)))
#-lispworks4
(apply #'call-next-method class
:optimize-slot-access (optimize-slot-access-p class)
initargs))
(cl:defmethod initialize-instance :around
((class funcallable-standard-class) &rest initargs
#+lispworks4 &key
#+lispworks4 (direct-superclasses ()))
(apply #'call-next-method class
#+lispworks4 :direct-superclasses
#+lispworks4 (modify-superclasses direct-superclasses nil)
:optimize-slot-access (optimize-slot-access-p class)
initargs))
(cl:defmethod reinitialize-instance :around
((class funcallable-standard-class) &rest initargs
#+lispworks4 &key
#+lispworks4 (direct-superclasses () direct-superclasses-p))
#+lispworks4
(progn
(when direct-superclasses-p
(setq direct-superclasses (modify-superclasses direct-superclasses nil))
(loop for superclass in (copy-list (class-direct-superclasses class))
unless (member superclass direct-superclasses)
do (remove-direct-subclass superclass class)))
(if direct-superclasses-p
(apply #'call-next-method class
:direct-superclasses direct-superclasses
:optimize-slot-access (optimize-slot-access-p class)
initargs)
(apply #'call-next-method class
:optimize-slot-access (optimize-slot-access-p class)
initargs)))
#-lispworks4
(apply #'call-next-method class
:optimize-slot-access (optimize-slot-access-p class)
initargs))
;; The following is necessary for forward-referenced-classes.
;; Since we replace the original funcallable-standard-object with
;; a new one, we have to prevent LispWorks from trying to use
;; the original one when forward-ferenced-classes are resolved.
#+lispworks4
(cl:defmethod change-class :around
((class forward-referenced-class)
(new-class funcallable-standard-class)
&rest initargs
&key (direct-superclasses ()))
(apply #'call-next-method class new-class
:optimize-slot-access (optimize-slot-access-p new-class)
:direct-superclasses (modify-superclasses direct-superclasses nil)
initargs))
;;; In LispWorks, the slot accessors (slot-value-using-class, etc.) are specialized
;;; on slot names instead of effective slot definitions. In order to fix this,
;;; we need to rewire the slot access protocol.
(declaim (inline find-slot))
(defun find-slot (slot-name class)
(declare (optimize (speed 3) (debug 0) (safety 0)
(compilation-speed 0)))
(loop for slot in (class-slots class)
when (eq slot-name (slot-definition-name slot))
return slot))
(cl:defmethod slot-value-using-class
((class standard-class) object (slot symbol))
(declare (optimize (speed 3) (debug 0) (safety 0)
(compilation-speed 0)))
(let ((slotd (find-slot slot class)))
(if slotd
(slot-value-using-class class object slotd)
(slot-missing class object slot 'slot-value))))
(cl:defmethod slot-value-using-class
((class standard-class) object (slotd standard-effective-slot-definition))
(declare (optimize (speed 3) (debug 0) (safety 0)
(compilation-speed 0)))
(slot-value-using-class
(load-time-value (class-prototype (find-class 'cl:standard-class)))
object
(slot-definition-name slotd)))
(cl:defmethod (setf slot-value-using-class)
(new-value (class standard-class) object (slot symbol))
(declare (optimize (speed 3) (debug 0) (safety 0)
(compilation-speed 0)))
(let ((slotd (find-slot slot class)))
(if slotd
(setf (slot-value-using-class class object slotd)
new-value)
(slot-missing class object slot 'setf new-value))))
(cl:defmethod (setf slot-value-using-class)
(new-value (class standard-class) object (slotd standard-effective-slot-definition))
(declare (optimize (speed 3) (debug 0) (safety 0)
(compilation-speed 0)))
(setf (slot-value-using-class
(load-time-value (class-prototype (find-class 'cl:standard-class)))
object
(slot-definition-name slotd))
new-value))
(cl:defmethod slot-boundp-using-class
((class standard-class) object (slot symbol))
(declare (optimize (speed 3) (debug 0) (safety 0)
(compilation-speed 0)))
(let ((slotd (find-slot slot class)))
(if slotd
(slot-boundp-using-class class object slotd)
(slot-missing class object slot 'slot-boundp))))
(cl:defmethod slot-boundp-using-class
((class standard-class) object (slotd standard-effective-slot-definition))
(declare (optimize (speed 3) (debug 0) (safety 0)
(compilation-speed 0)))
(slot-boundp-using-class
(load-time-value (class-prototype (find-class 'cl:standard-class)))
object
(slot-definition-name slotd)))
(cl:defmethod slot-makunbound-using-class
((class standard-class) object (slot symbol))
(declare (optimize (speed 3) (debug 0) (safety 0)
(compilation-speed 0)))
(let ((slotd (find-slot slot class)))
(if slotd
(slot-makunbound-using-class class object slotd)
(slot-missing class object slot 'slot-makunbound))))
(cl:defmethod slot-makunbound-using-class
((class standard-class) object (slotd standard-effective-slot-definition))
(declare (optimize (speed 3) (debug 0) (safety 0)
(compilation-speed 0)))
(slot-makunbound-using-class
(load-time-value (class-prototype (find-class 'cl:standard-class)))
object
(slot-definition-name slotd)))
;; In LispWorks, eql specializers are lists. We cannot change this
;; but we can soften some of the incompatibilities.
(deftype eql-specializer ()
'(or eql-specializer*
(satisfies clos:eql-specializer-p)))
(cl:defgeneric eql-specializer-object (eql-specializer)
(:method ((cons cons))
(if (clos:eql-specializer-p cons)
(cadr cons)
(error "~S is not an eql-specializer." cons))))
(defun intern-eql-specializer (object)
`(eql ,object))
(defclass eql-specializer* (metaobject)
((obj :reader eql-specializer-object
:initarg eso
:initform (error "Use intern-eql-specializer to create eql-specializers."))
(direct-methods :reader specializer-direct-methods
:accessor es-direct-methods
:initform ())))
(defvar *eql-specializers* (make-hash-table :weak-kind :value))
#+lispworks5.0
(defvar *eql-specializers-lock* (mp:make-lock))
#-lispworks5.0
(defun intern-eql-specializer* (object)
(or (gethash object *eql-specializers*)
(with-hash-table-locked *eql-specializers*
(or (gethash object *eql-specializers*)
(setf (gethash object *eql-specializers*)
(make-instance 'eql-specializer* 'eso object))))))
#+lispworks5.0
(defun intern-eql-specializer* (object)
(or (gethash object *eql-specializers*)
(mp:with-lock (*eql-specializers-lock*)
(or (gethash object *eql-specializers*)
(setf (gethash object *eql-specializers*)
(make-instance 'eql-specializer* 'eso object))))))
(cl:defmethod add-direct-method ((specializer eql-specializer*) (method method))
(pushnew method (es-direct-methods specializer)))
(cl:defmethod remove-direct-method ((specializer eql-specializer*) (method method))
(removef (es-direct-methods specializer) method))
(cl:defgeneric specializer-direct-generic-functions (specializer)
(:method ((class class))
(remove-duplicates
(mapcar #'method-generic-function
(specializer-direct-methods class))))
(:method ((eql-specializer eql-specializer*))
(remove-duplicates
(mapcar #'method-generic-function
(specializer-direct-methods eql-specializer))))
(:method ((cons cons))
(specializer-direct-generic-functions
(intern-eql-specializer*
(eql-specializer-object cons)))))
;; The following method ensures that remove-method is called.
#+lispworks4
(cl:defmethod add-method :before ((gf standard-generic-function) (method method))
(when-let (old-method (find-method gf (method-qualifiers method)
(method-specializers method) nil))
(remove-method gf old-method)))
;; The following two methods ensure that add/remove-direct-method is called,
;; and that the dependent protocol for generic function works.
(cl:defmethod add-method :after ((gf standard-generic-function) (method method))
(dolist (specializer (method-specializers method))
(if (consp specializer)
(add-direct-method (intern-eql-specializer*
(eql-specializer-object specializer))
method)
#+lispworks4
(add-direct-method specializer method)))
#+lispworks4.3
(map-dependents gf (lambda (dep) (update-dependent gf dep 'add-method method))))
(cl:defmethod remove-method :after ((gf standard-generic-function) (method method))
(dolist (specializer (method-specializers method))
(if (consp specializer)
(remove-direct-method (intern-eql-specializer*
(eql-specializer-object specializer))
method)
#+lispworks4
(remove-direct-method specializer method)))
#+lispworks4.3
(map-dependents gf (lambda (dep) (update-dependent gf dep 'remove-method method))))
(cl:defgeneric find-method-combination (gf combi combi-options)
(:method ((gf generic-function) (combi symbol) combi-options)
(when combi-options
(error "This implementation of find-method-combination cannot handle method combination options."))
(clos::find-a-method-combination-type combi)))
;; "Native" make-method-lambda.
(cl:defmethod make-method-lambda ((gf generic-function) (method standard-method) lambda-expression environment)
(destructuring-bind
(lambda (&rest args) &body body)
lambda-expression
(declare (ignore lambda))
(loop with documentation = :unbound
for (car . cdr) = body then cdr
while (or (and cdr (stringp car))
(and (consp car) (eq (car car) 'declare)))
if (stringp car)
do (setf documentation
(if (eq documentation :unbound) car
(warn "Too many documentation strings in lambda expression ~S."
lambda-expression)))
else append (loop for declaration in (cdr car)
if (eq (car declaration) 'ignore)
collect `(ignorable ,@(cdr declaration))
and collect `(dynamic-extent ,@(cdr declaration))
else collect declaration) into declarations
finally (multiple-value-bind
(method-lambda method-args)
(clos:make-method-lambda
gf method args declarations
`(progn ,car ,@cdr)
environment)
(if (eq documentation :unbound)
(return (values method-lambda method-args))
(return (values
`(lambda ,(cadr method-lambda)
,documentation
,@(cddr method-lambda))
method-args)))))))
;; Provide standard-instance-access and funcallable-standard-instance-access
(declaim (inline standard-instance-access (setf standard-instance-access)))
(defun standard-instance-access (instance location)
(clos::fast-standard-instance-access instance location))
(defun (setf standard-instance-access) (new-value instance location)
(setf (clos::fast-standard-instance-access instance location) new-value))
(declaim (inline funcallable-instance-access))
(defun funcallable-instance-access (instance location &rest args)
(let* ((class (class-of instance))
(slot (find location (class-slots class)
:key #'slot-definition-location)))
(if slot
(apply #'clos::funcallable-instance-access instance (slot-definition-name slot) args)
(error "There is no slot with location ~S for instance ~S." location instance))))
(defun funcallable-standard-instance-access (instance location)
(funcallable-instance-access instance location))
(defun (setf funcallable-standard-instance-access) (new-value instance location)
(funcallable-instance-access instance location new-value))
(eval-when (:compile-toplevel :load-toplevel :execute)
(pushnew :closer-mop *features*))