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(asdf:oos 'asdf:load-op :contextl :force t)
(in-package :contextl-user)
(define-layered-class person ()
((name :initarg :name
:layered-accessor person-name)))
(define-layered-function display-object (object))
(define-layered-method display-object ((object person))
(print (list 'person :name (person-name object))))
(defparameter *pascal*
(make-instance 'person :name 'pascal))
(assert (equal (display-object *pascal*)
'(person :name pascal)))
(deflayer employment-layer)
(define-layered-class employer
:in employment-layer ()
((name :initarg :name
:layered-accessor employer-name)))
(define-layered-method display-object
:in employment-layer ((object employer))
(print (list 'employer :name (employer-name object))))
(defparameter *vub*
(make-instance 'employer :name 'vub))
(assert (equal (with-active-layers (employment-layer)
(display-object *vub*))
'(employer :name vub)))
(define-layered-class person
:in employment-layer ()
((employer :initarg :employer
:layered-accessor person-employer)))
(define-layered-method display-object
:in employment-layer :around ((object person))
(append (call-next-method)
(print (list :employer
(display-object (person-employer object))))))
(with-active-layers (employment-layer)
(setf (person-employer *pascal*) *vub*))
(assert (equal (display-object *pascal*)
'(person :name pascal)))
(assert (equal (with-active-layers (employment-layer)
(display-object *pascal*))
'(person :name pascal
:employer (employer :name vub))))
(deflayer info-layer)
(define-layered-class info-mixin
:in info-layer ()
((city :initarg :city
:layered-accessor city)))
(define-layered-method display-object
:in info-layer :around ((object info-mixin))
(append (call-next-method)
(print (list :city (city object)))))
(define-layered-class person
:in info-layer (info-mixin)
())
(define-layered-class employer
:in info-layer (info-mixin)
())
(defparameter *docomo*
(make-instance 'employer
:name 'docomo
:city 'munich))
(defparameter *robert*
(make-instance 'person
:name 'robert
:employer *docomo*
:city 'ilmenau))
(assert (equal (display-object *robert*)
'(person :name robert)))
(assert (equal (with-active-layers (employment-layer)
(display-object *robert*))
'(person :name robert :employer (employer :name docomo))))
(assert (equal (with-active-layers (employment-layer info-layer)
(print (display-object *robert*)))
'(person :name robert
:city ilmenau
:employer (employer :name docomo
:city munich))))
(assert (equal (with-active-layers (info-layer employment-layer)
(display-object *robert*))
'(person :name robert
:city ilmenau
:employer (employer :name docomo
:city munich))))
(assert (equal (with-active-layers (info-layer employment-layer)
(with-inactive-layers (info-layer)
(display-object *robert*)))
(with-active-layers (employment-layer)
(display-object *robert*))))
(assert (equal (with-active-layers (info-layer employment-layer info-layer)
(display-object *robert*))
(with-active-layers (employment-layer info-layer)
(display-object *robert*))))
(deflayer generic-display-layer)
(define-layered-class displayed-slots-mixin
:in generic-display-layer ()
((displayed-slots :special t
:initform '()
:accessor displayed-slots)))
(define-layered-class person
:in generic-display-layer
(displayed-slots-mixin)
())
(define-layered-class employer
:in generic-display-layer
(displayed-slots-mixin)
())
(defgeneric generic-display (object))
(defmethod generic-display (object) object)
(defmethod generic-display ((object displayed-slots-mixin))
(let ((slots (displayed-slots object)))
(if slots
(loop for slot in slots
collect slot
collect (generic-display (slot-value object slot)))
(format t "No slots for display selected.~%"))))
(assert (equal (with-active-layers (generic-display-layer)
(dletf (((displayed-slots *robert*) '(name employer))
((displayed-slots *docomo*) '(name city)))
(generic-display *robert*)))
'(name robert employer (name docomo city munich))))
(deflayer slot-access-layer)
(define-layered-method slot-value-using-layer
:in slot-access-layer (class (object person) slot reader)
(declare (ignorable class slot reader))
(list* (call-next-method)
(list :slot-access 'successful)))
(define-layered-class person
:in slot-access-layer ()
((name :layered t)))
(assert (equal (with-active-layers (generic-display-layer slot-access-layer)
(dletf (((displayed-slots *robert*) '(name employer))
((displayed-slots *docomo*) '(name city)))
(print (generic-display *robert*))))
'(name (robert :slot-access successful)
employer (name docomo city munich))))
(define-layered-function test ())
(define-layered-method test :in t ()
(list 'root-layer))
(define-layered-method test :in info-layer ()
(list* 'info-layer (call-next-method)))
(define-layered-method test :in employment-layer ()
(list* 'employment-layer (call-next-method)))
(assert (equal (test) '(root-layer)))
(assert (equal (with-active-layers (info-layer)
(test))
'(info-layer root-layer)))
(assert (equal (with-active-layers (info-layer employment-layer)
(test))
'(employment-layer info-layer root-layer)))
(assert (equal (with-active-layers (info-layer employment-layer info-layer)
(test))
'(employment-layer info-layer root-layer)))
(assert (equal (with-active-layers (info-layer employment-layer)
(with-inactive-layers (info-layer)
(test)))
'(employment-layer root-layer)))
(assert (equal (with-active-layers (employment-layer employment-layer)
(test))
'(employment-layer root-layer)))
(assert (equal (with-active-layers (info-layer employment-layer)
(with-inactive-layers (employment-layer)
(test)))
'(info-layer root-layer)))
(multiple-value-bind
(required-parameters lambda-list-keyword)
(contextl::parse-gf-lambda-list '(a b c &rest r))
(assert (and (equal required-parameters '(a b c))
lambda-list-keyword)))
(multiple-value-bind
(required-parameters lambda-list-keyword)
(contextl::parse-gf-lambda-list '(&key r))
(assert (and (null required-parameters)
lambda-list-keyword)))
(multiple-value-bind
(required-parameters lambda-list-keyword)
(contextl::parse-gf-lambda-list '(a b c))
(assert (and (equal required-parameters '(a b c))
(not lambda-list-keyword))))
(multiple-value-bind
(required-parameters lambda-list-keyword)
(contextl::parse-gf-lambda-list '())
(assert (and (null required-parameters)
(not lambda-list-keyword))))
(print :done)
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