-(defun hyperobject-class-fields (obj)
- (class-slots (class-of obj)))
-
-;;; Slot accessor and class rules
-
-(defclass rule ()
- ((name :initarg :name :initform nil :accessor name)
- (dependants :initarg :dependants :initform nil :accessor dependants)
- (volatile :initarg :volatile :initform nil :accessor volatile)
- (access-slots :initarg :access-slots :initform nil :accessor access-slots)
- (source-code :initarg :source-code :initform nil :accessor source-code)
- (func :initform nil :initarg :func :accessor func)))
-
-(defun compile-rule (source-code dependants volatile cl)
- (let ((access (appendnew dependants volatile)))
-;; (compile nil
- (eval
- `(lambda (obj)
- (when (every #'(lambda (x) (slot-boundp obj x))
- (quote ,dependants))
- (with-slots ,access obj
- ,@source-code))))))
-;;)
-
-(defun finalize-rules (cl)
- (let* ((direct-rules (direct-rules cl))
- (rules '()))
- (dolist (rule direct-rules)
- (destructuring-bind (name (&key dependants volatile) &rest source-code)
- rule
- (setf dependants (mklist dependants)
- volatile (mklist volatile))
- (push
- (make-instance 'rule :name name :dependants dependants
- :volatile volatile :source-code source-code
- :access-slots (appendnew dependants volatile)
- :func (compile-rule
- source-code dependants volatile cl))
- rules)))
- (setf (rules cl) (nreverse rules))))
-
-
-(defun fire-class-rules (cl obj slot)
- "Fire all class rules. Called after a slot is modified."
- (let ((name (slot-definition-name slot)))
- (dolist (rule (rules cl))
- (when (find name (dependants rule))
- (cmsg "firing rule: ~a" rule)
- (funcall (func rule) obj)))))
-
-(defmethod (setf slot-value-using-class)
- :around (new-value (cl hyperobject-class) obj
- (slot standard-effective-slot-definition))
- #+ignore
- (cmsg-c :verbose "Setf slot value: class: ~s, obj: ~s, slot: ~s, value: ~s" cl (class-of obj) slot new-value)
-
- (let ((func (esd-value-constraint slot)))
- (cond
- ((and func (not (funcall func new-value)))
- (warn "Rejected change to value of slot ~a of object ~a"
- (slot-definition-name slot) obj)
- (slot-value obj (slot-definition-name slot)))
- (t
- (call-next-method)
- (when (direct-rules cl)
- (fire-class-rules cl obj slot))
- new-value))))
-
-#+ignore
-(defmethod slot-value-using-class :around ((cl hyperobject-class) obj
- (slot standard-effective-slot-definition))
- (let ((value (call-next-method)))
- (cmsg-c :verbose "slot value: class: ~s, obj: ~s, slot: ~s" cl (class-of obj) slot)
- value))