(declare (fixnum ,var))
,@body))
\f
+;;;; PCL's view of funcallable instances
+
+(defstruct (pcl-funcallable-instance
+ (:alternate-metaclass sb-kernel:funcallable-instance
+ sb-kernel:random-pcl-class
+ sb-kernel:make-random-pcl-class)
+ (:type sb-kernel:funcallable-structure)
+ (:constructor allocate-funcallable-instance-1 ())
+ (:copier nil)
+ (:conc-name nil))
+ ;; Note: The PCL wrapper is in the layout slot.
+
+ ;; PCL data vector.
+ (pcl-funcallable-instance-slots nil)
+ ;; The debug-name for this function.
+ (funcallable-instance-name nil))
+
+(import 'sb-kernel:funcallable-instance-p)
+
+;;; This "works" on non-PCL FINs, which allows us to weaken
+;;; FUNCALLABLE-INSTANCE-P to return true for all FINs. This is also
+;;; necessary for bootstrapping to work, since the layouts for early
+;;; GFs are not initially initialized.
+(defmacro funcallable-instance-data-1 (fin slot)
+ (ecase (eval slot)
+ (wrapper `(sb-kernel:%funcallable-instance-layout ,fin))
+ (slots `(sb-kernel:%funcallable-instance-info ,fin 0))))
+
+;;; FIXME: Now that we no longer try to make our CLOS implementation
+;;; portable to other implementations of Common Lisp, all the
+;;; funcallable instance wrapper logic here can go away in favor
+;;; of direct calls to native SBCL funcallable instance operations.
+(defun set-funcallable-instance-function (fin new-value)
+ (declare (type function new-value))
+ (aver (funcallable-instance-p fin))
+ (setf (sb-kernel:funcallable-instance-function fin) new-value))
+(defmacro fsc-instance-p (fin)
+ `(funcallable-instance-p ,fin))
+(defmacro fsc-instance-class (fin)
+ `(wrapper-class (funcallable-instance-data-1 ,fin 'wrapper)))
+(defmacro fsc-instance-wrapper (fin)
+ `(funcallable-instance-data-1 ,fin 'wrapper))
+(defmacro fsc-instance-slots (fin)
+ `(funcallable-instance-data-1 ,fin 'slots))
+\f
+(declaim (inline clos-slots-ref (setf clos-slots-ref)))
(declaim (ftype (function (simple-vector index) t) clos-slots-ref))
(defun clos-slots-ref (slots index)
(svref slots index))
(defmacro std-instance-p (x)
`(sb-kernel:%instancep ,x))
-(defmacro get-slots (inst)
- `(cond ((std-instance-p ,inst) (std-instance-slots ,inst))
- ((fsc-instance-p ,inst) (fsc-instance-slots ,inst))
- (t (error "What kind of instance is this?"))))
-
;; a temporary definition used for debugging the bootstrap
#+sb-show
(defun print-std-instance (instance stream depth)
(eq class (find-class 'built-in-class nil)))
(princ (early-class-name instance) stream)))))
-;;; This is the value that we stick into a slot to tell us that it is unbound.
-;;; It may seem gross, but for performance reasons, we make this an interned
-;;; symbol. That means that the fast check to see whether a slot is unbound is
-;;; to say (EQ <val> '..SLOT-UNBOUND..). That is considerably faster than
-;;; looking at the value of a special variable. Be careful, there are places in
-;;; the code which actually use ..slot-unbound.. rather than this variable. So
-;;; much for modularity..
+;;; This is the value that we stick into a slot to tell us that it is
+;;; unbound. It may seem gross, but for performance reasons, we make
+;;; this an interned symbol. That means that the fast check to see
+;;; whether a slot is unbound is to say (EQ <val> '..SLOT-UNBOUND..).
+;;; That is considerably faster than looking at the value of a special
+;;; variable. Be careful, there are places in the code which actually
+;;; use ..SLOT-UNBOUND.. rather than this variable. So much for
+;;; modularity..
;;;
-;;; FIXME: Now that we're tightly integrated into SBCL, we could use the
-;;; SBCL built-in unbound value token instead.
+;;; FIXME: Now that we're tightly integrated into SBCL, we could use
+;;; the SBCL built-in unbound value token instead. Perhaps if we did
+;;; so it would be a good idea to define collections of CLOS slots as
+;;; a new type of heap object, instead of using bare SIMPLE-VECTOR, in
+;;; order to avoid problems (in the debugger if nowhere else) with
+;;; SIMPLE-VECTORs some of whose elements are unbound tokens.
(defconstant +slot-unbound+ '..slot-unbound..)
(defmacro %allocate-static-slot-storage--class (no-of-slots)
(defmacro std-instance-class (instance)
`(wrapper-class* (std-instance-wrapper ,instance)))
\f
-
-;;; When given a function should give this function the name <new-name>.
-;;; Note that <new-name> is sometimes a list. Some lisps get the upset
-;;; in the tummy when they start thinking about functions which have
-;;; lists as names. To deal with that there is set-function-name-intern
-;;; which takes a list spec for a function name and turns it into a symbol
-;;; if need be.
+;;; When given a function should give this function the name
+;;; NEW-NAME. Note that NEW-NAME is sometimes a list. Some lisps
+;;; get the upset in the tummy when they start thinking about
+;;; functions which have lists as names. To deal with that there is
+;;; SET-FUNCTION-NAME-INTERN which takes a list spec for a function
+;;; name and turns it into a symbol if need be.
;;;
-;;; When given a funcallable instance, set-function-name MUST side-effect
-;;; that FIN to give it the name. When given any other kind of function
-;;; set-function-name is allowed to return new function which is the 'same'
-;;; except that it has the name.
+;;; When given a funcallable instance, SET-FUNCTION-NAME *must*
+;;; side-effect that FIN to give it the name. When given any other
+;;; kind of function SET-FUNCTION-NAME is allowed to return a new
+;;; function which is "the same" except that it has the name.
;;;
-;;; In all cases, set-function-name must return the new (or same) function.
-;;; (Unlike other functions to set stuff, it does not return the new value.)
+;;; In all cases, SET-FUNCTION-NAME must return the new (or same)
+;;; function. (Unlike other functions to set stuff, it does not return
+;;; the new value.)
(defun set-function-name (fcn new-name)
#+sb-doc
"Set the name of a compiled function object. Return the function."
(let ((header (sb-kernel:%closure-function fcn)))
(setf (sb-c::%function-name header) new-name))
- ;; Maybe add better scheme here someday.
+ ;; XXX Maybe add better scheme here someday.
fcn)))
(defun intern-function-name (name)
(eval-when (:load-toplevel)
(compile-iis-functions t))))
\f
-(defun record-definition (type spec &rest args)
- (declare (ignore type spec args))
- ())
-
-(defun doctor-dfun-for-the-debugger (gf dfun) (declare (ignore gf)) dfun)
-\f
;;; This definition is for interpreted code.
(defun pcl-instance-p (x)
(typep (sb-kernel:layout-of x) 'wrapper))
(defmacro std-instance-slots (x) `(sb-kernel:%instance-ref ,x 1))
(defmacro std-instance-wrapper (x) `(sb-kernel:%instance-layout ,x))
+;;; FIXME: These functions are called every place we do a
+;;; CALL-NEXT-METHOD, and probably other places too. It's likely worth
+;;; selectively optimizing them with DEFTRANSFORMs and stuff, rather
+;;; than just indiscriminately expanding them inline everywhere.
+(declaim (inline get-slots get-slots-or-nil))
+(declaim (ftype (function (t) simple-vector) get-slots))
+(declaim (ftype (function (t) (or simple-vector null)) get-slots-or-nil))
+(defun get-slots (instance)
+ (if (std-instance-p instance)
+ (std-instance-slots instance)
+ (fsc-instance-slots instance)))
+(defun get-slots-or-nil (instance)
+ (when (pcl-instance-p instance)
+ (get-slots instance)))
+
(defmacro built-in-or-structure-wrapper (x) `(sb-kernel:layout-of ,x))
(defmacro get-wrapper (inst)
(aver (typep ,wrapper 'wrapper))
,wrapper)))
-;;; FIXME: could be an inline function (like many other things around
-;;; here)
+;;; FIXME: could be an inline function or ordinary function (like many
+;;; other things around here)
(defmacro get-instance-wrapper-or-nil (inst)
(once-only ((wrapper `(wrapper-of ,inst)))
`(if (typep ,wrapper 'wrapper)
,wrapper
nil)))
-
-(defmacro get-slots-or-nil (inst)
- (once-only ((n-inst inst))
- `(when (pcl-instance-p ,n-inst)
- (if (std-instance-p ,n-inst)
- (std-instance-slots ,n-inst)
- (fsc-instance-slots ,n-inst)))))
\f
;;;; structure-instance stuff
+;;;;
+;;;; FIXME: Now that the code is SBCL-only, this extra layer of
+;;;; abstraction around our native structure representation doesn't
+;;;; seem to add anything useful, and could probably go away.
+
;;; The definition of STRUCTURE-TYPE-P was moved to early-low.lisp.
(defun get-structure-dd (type)
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