separate out cons-specializer and walk into their own file

[specializable.git] / specializable.lisp

diff --git a/specializable.lisp b/specializable.lisp
index b1ce7139fb1b8518c169e0dd924c0ba20f38b3a3..e7e365c33ea4e250fe7b3e2896bdff297fd6c10a 100644 (file)
--- a/specializable.lisp
+++ b/specializable.lisp
@@ -301,66 +301,3 @@
                     args
                     next)))
         primary-emf)))
-\f
-;;;; example
-(defclass cons-specializer (extended-specializer)
-  ((car :initarg :car :reader %car)))
-(defclass cons-generic-function (specializable-generic-function)
-  ()
-  (:metaclass sb-mop:funcallable-standard-class))
-
-(define-extended-specializer cons (gf car)
-  (make-instance 'cons-specializer :car car))
-
-(defmethod sb-pcl:unparse-specializer-using-class
-    ((gf cons-generic-function) (specializer cons-specializer))
-  `(cons ,(%car specializer)))
-(defmethod sb-pcl::same-specializer-p
-    ((s1 cons-specializer) (s2 cons-specializer))
-  (eql (%car s1) (%car s2)))
-
-(defmethod generalizer-of-using-class ((gf cons-generic-function) arg)
-  (typecase arg
-    ((cons symbol) (car arg))
-    (t (call-next-method))))
-;;; FIXME: it looks like these protocol functions should have the GF
-;;; as an argument, since generalizer-of-using-class does
-(defmethod specializer-accepts-generalizer-p ((specializer cons-specializer) thing)
-  (if (eql (%car specializer) thing)
-      (values t t)
-      (values nil t)))
-;;; FIXME: yes, definitely need the gf!  
-(defmethod specializer-accepts-generalizer-p (specializer (thing symbol))
-  (specializer-accepts-generalizer-p specializer (find-class 'cons)))
-
-(defmethod specializer-accepts-p ((specializer cons-specializer) obj)
-  (and (consp obj)
-       (eql (car obj) (%car specializer))))
-(defmethod specializer< ((s1 cons-specializer) (s2 cons-specializer) generalizer)
-  (declare (ignore generalizer))
-  (if (eql (%car s1) (%car s2))
-      '=
-      nil))
-(defmethod specializer< ((s1 cons-specializer) (s2 class) generalizer)
-  (declare (ignore generalizer))
-  '<)
-(defmethod specializer< ((s1 cons-specializer) (s2 sb-mop:eql-specializer) generalizer)
-  (declare (ignore generalizer))
-  '>)
-(defmethod specializer< ((s1 sb-mop:specializer) (s2 cons-specializer) generalizer)
-  (ecase (specializer< s2 s1 generalizer)
-    ((<) '>)
-    ((>) '<)))
-
-(defgeneric walk (form)
-  (:generic-function-class cons-generic-function))
-
-(defmethod walk ((form symbol))
-  `(lookup ,form))
-(defmethod walk ((form cons))
-  `(call (flookup ,(car form)) (list ,@(mapcar #'walk (cdr form)))))
-(defmethod walk ((form (cons quote)))
-  (cadr form))
-(defmethod walk ((form (cons let)))
-  (let ((bindings (cadr form)))
-    `(with-bindings ,bindings ,@(cddr form))))