(in-package "SB-PCL")
(declaim (declaration
- ;; FIXME: Since none of these are supported in SBCL, the
- ;; declarations using them are just noise now that this is
- ;; not a portable package any more, and could be deleted.
- values ; I use this so that Zwei can remind
- ; me what values a function returns.
- arglist ; Tells me what the pretty arglist
- ; of something (which probably takes
- ; &REST args) is.
- indentation ; Tells ZWEI how to indent things
- ; like DEFCLASS.
- class
- variable-rebinding
- pcl-fast-call
- method-name
- method-lambda-list))
-
-;;; These are age-old functions which CommonLisp cleaned-up away. They probably
-;;; exist in other packages in all CommonLisp implementations, but I will leave
-;;; it to the compiler to optimize into calls to them.
-;;;
-;;; FIXME: MEMQ, ASSQ, and DELQ are already defined in SBCL, and we should
-;;; use those. POSQ and NEQ aren't defined in SBCL, and are used too often
-;;; in PCL to make it appealing to hand expand all uses and then delete
-;;; the macros, so they should be boosted up to SBCL to stand by MEMQ,
-;;; ASSQ, and DELQ.
-(defmacro memq (item list) `(member ,item ,list :test #'eq))
-(defmacro assq (item list) `(assoc ,item ,list :test #'eq))
-(defmacro delq (item list) `(delete ,item ,list :test #'eq))
-(defmacro posq (item list) `(position ,item ,list :test #'eq))
-(defmacro neq (x y) `(not (eq ,x ,y)))
-
-;;; Rename these to CONSTANTLY-T, CONSTANTLY-NIL, and CONSTANTLY-0
-;;; and boost them up to SB-INT.
-(defun true (&rest ignore) (declare (ignore ignore)) t)
-(defun false (&rest ignore) (declare (ignore ignore)) nil)
-(defun zero (&rest ignore) (declare (ignore ignore)) 0)
-
-;;; ONCE-ONLY does the same thing as it does in zetalisp. I should have just
-;;; lifted it from there but I am honest. Not only that but this one is
-;;; written in Common Lisp. I feel a lot like bootstrapping, or maybe more
-;;; like rebuilding Rome.
-;;;
-;;; FIXME: We should only need one ONCE-ONLY in CMU CL, and there's one
-;;; in SB-EXT already (presently to go in SB-INT). Can we use
-;;; only one of these in both places?
-(defmacro once-only (vars &body body)
- (let ((gensym-var (gensym))
- (run-time-vars (gensym))
- (run-time-vals (gensym))
- (expand-time-val-forms ()))
- (dolist (var vars)
- (push `(if (or (symbolp ,var)
- (numberp ,var)
- (and (listp ,var)
- (member (car ,var) '(quote function))))
- ,var
- (let ((,gensym-var (gensym)))
- (push ,gensym-var ,run-time-vars)
- (push ,var ,run-time-vals)
- ,gensym-var))
- expand-time-val-forms))
- `(let* (,run-time-vars
- ,run-time-vals
- (wrapped-body
- (let ,(mapcar #'list vars (reverse expand-time-val-forms))
- ,@body)))
- `(let ,(mapcar #'list (reverse ,run-time-vars)
- (reverse ,run-time-vals))
- ,wrapped-body))))
+ ;; These three nonstandard declarations seem to be used
+ ;; privately within PCL itself to pass information around,
+ ;; so we can't just delete them.
+ %class
+ %method-name
+ %method-lambda-list
+ ;; This declaration may also be used within PCL to pass
+ ;; information around, I'm not sure. -- WHN 2000-12-30
+ %variable-rebinding))
+
+(defmacro name-get-fdefinition (name)
+ (sb-int:once-only ((name name))
+ `(if (symbolp ,name) ; take care of "setf <fun>"'s
+ (symbol-function ,name)
+ (fdefinition ,name))))
+
+(defmacro name-set-fdefinition (name new-definition)
+ (sb-int:once-only ((name name))
+ `(if (symbolp ,name) ; take care of "setf <fun>"'s
+ (setf (symbol-function ,name) ,new-definition)
+ (setf (fdefinition ,name) ,new-definition))))
+
+;;; FIXME: CONSTANTLY-FOO should be boosted up to SB-INT too.
+(macrolet ((def-constantly-fun (name constant-expr)
+ `(setf (symbol-function ',name)
+ (constantly ,constant-expr))))
+ (def-constantly-fun constantly-t t)
+ (def-constantly-fun constantly-nil nil)
+ (def-constantly-fun constantly-0 0))
;;; FIXME: This looks like SBCL's PARSE-BODY, and should be shared.
(eval-when (:compile-toplevel :load-toplevel :execute)
body)))
) ; EVAL-WHEN
-;;; FIXME: This seems to only be used to get 'METHOD-NAME and
-;;; METHOD-LAMBDA-LIST declarations. They aren't ANSI. Are they important?
(defun get-declaration (name declarations &optional default)
(dolist (d declarations default)
(dolist (form (cdr d))
(setq ,var (pop .dolist-carefully.))
,@body)
(,improper-list-handler)))))
-
-;;; FIXME: Do we really need this? It seems to be used only
-;;; for class names. Why not just the default ALL-CAPS?
-(defun capitalize-words (string &optional (dashes-p t))
- (let ((string (copy-seq (string string))))
- (declare (string string))
- (do* ((flag t flag)
- (length (length string) length)
- (char nil char)
- (i 0 (+ i 1)))
- ((= i length) string)
- (setq char (elt string i))
- (cond ((both-case-p char)
- (if flag
- (and (setq flag (lower-case-p char))
- (setf (elt string i) (char-upcase char)))
- (and (not flag) (setf (elt string i) (char-downcase char))))
- (setq flag nil))
- ((char-equal char #\-)
- (setq flag t)
- (unless dashes-p (setf (elt string i) #\space)))
- (t (setq flag nil))))))
\f
;;;; FIND-CLASS
;;;;
-;;;; This is documented in the CLOS specification.
-;;;; KLUDGE: Except that SBCL deviates from the spec by having CL:FIND-CLASS
-;;;; distinct from PCL:FIND-CLASS, alas. -- WHN 19991203
+;;;; This is documented in the CLOS specification. FIXME: Except that
+;;;; SBCL deviates from the spec by having CL:FIND-CLASS distinct from
+;;;; PCL:FIND-CLASS, alas.
(defvar *find-class* (make-hash-table :test 'eq))
-(defun make-constant-function (value)
- #'(lambda (object)
- (declare (ignore object))
- value))
-
-(defun function-returning-nil (x)
- (declare (ignore x))
- nil)
-
-(defun function-returning-t (x)
- (declare (ignore x))
- t)
-
(defmacro find-class-cell-class (cell)
`(car ,cell))
(defmacro make-find-class-cell (class-name)
(declare (ignore class-name))
- '(list* nil #'function-returning-nil nil))
+ '(list* nil #'constantly-nil nil))
(defun find-class-cell (symbol &optional dont-create-p)
(or (gethash symbol *find-class*)
(find-class-from-cell ',symbol ,class-cell nil))))))
form))
-;;; FIXME: These #-SETF forms are pretty ugly. Could they please go away?
-#-setf
-(defsetf find-class (symbol &optional (errorp t) environment) (new-value)
- (declare (ignore errorp environment))
- `(SETF\ SB-PCL\ FIND-CLASS ,new-value ,symbol))
-
-(defun #-setf SETF\ SB-PCL\ FIND-CLASS #+setf (setf find-class) (new-value
- symbol)
+(defun (setf find-class) (new-value symbol)
(if (legal-class-name-p symbol)
(let ((cell (find-class-cell symbol)))
(setf (find-class-cell-class cell) new-value)
(eq *boot-state* 'braid))
(when (and new-value (class-wrapper new-value))
(setf (find-class-cell-predicate cell)
- (symbol-function (class-predicate-name new-value))))
+ (name-get-fdefinition (class-predicate-name new-value))))
(when (and new-value (not (forward-referenced-class-p new-value)))
(dolist (keys+aok (find-class-cell-make-instance-function-keys cell))
new-value)
(error "~S is not a legal class name." symbol)))
-#-setf
-(defsetf find-class-predicate (symbol &optional (errorp t) environment) (new-value)
- (declare (ignore errorp environment))
- `(SETF\ SB-PCL\ FIND-CLASS-PREDICATE ,new-value ,symbol))
-
-(defun #-setf SETF\ SB-PCL\ FIND-CLASS-PREDICATE
- #+setf (setf find-class-predicate)
- (new-value symbol)
+(defun (setf find-class-predicate)
+ (new-value symbol)
(if (legal-class-name-p symbol)
- (setf (find-class-cell-predicate (find-class-cell symbol)) new-value)
- (error "~S is not a legal class name." symbol)))
+ (setf (find-class-cell-predicate (find-class-cell symbol)) new-value)
+ (error "~S is not a legal class name." symbol)))
(defun find-wrapper (symbol)
(class-wrapper (find-class symbol)))
(defmacro function-apply (form &rest args)
`(apply (the function ,form) ,@args))
\f
-;;;; various nastiness to work around nonstandardness of SETF when PCL
-;;;; was written
-
-;;; Convert a function name to its standard SETF function name. We
-;;; have to do this hack because not all Common Lisps have yet
-;;; converted to having SETF function specs.
-;;;
-;;; KLUDGE: We probably don't have to do this any more. But in Debian
-;;; cmucl 2.4.8 the :SETF feature isn't set (?). Perhaps it's because of
-;;; the comment ca. 10 lines down about how the built-in setf mechanism
-;;; takes a hash table lookup each time? It would be nice to go one
-;;; way or another on this, perhaps some benchmarking would be in order..
-;;; (Oh, more info: In debian src/pcl/notes.text, which looks like stale
-;;; documentation from 1992, it says TO DO: When CMU CL improves its
-;;; SETF handling, remove the comment in macros.lisp beginning the line
-;;; #+CMU (PUSHNEW :SETF *FEATURES*). So since CMU CL's (and now SBCL's)
-;;; SETF handling seems OK to me these days, there's a fairly decent chance
-;;; this would work.) -- WHN 19991203
-;;;
-;;; In a port that does have SETF function specs you can use those just by
-;;; making the obvious simple changes to these functions. The rest of PCL
-;;; believes that there are function names like (SETF <foo>), this is the
-;;; only place that knows about this hack.
-(eval-when (:compile-toplevel :load-toplevel :execute)
-; In 15e (and also 16c), using the built-in SETF mechanism costs
-; a hash table lookup every time a SETF function is called.
-; Uncomment the next line to use the built in SETF mechanism.
-;#+cmu (pushnew :setf *features*)
-) ; EVAL-WHEN
-
-(eval-when (:compile-toplevel :load-toplevel :execute)
-
-#-setf
-(defvar *setf-function-names* (make-hash-table :size 200 :test 'eq))
(defun get-setf-function-name (name)
- #+setf `(setf ,name)
- #-setf
- (or (gethash name *setf-function-names*)
- (setf (gethash name *setf-function-names*)
- (let ((pkg (symbol-package name)))
- (if pkg
- (intern (format nil
- "SETF ~A ~A"
- (package-name pkg)
- (symbol-name name))
- *pcl-package*)
- (make-symbol (format nil "SETF ~A" (symbol-name name))))))))
-
-;;; Call this to define a setf macro for a function with the same behavior as
-;;; specified by the SETF function cleanup proposal. Specifically, this will
-;;; cause: (SETF (FOO a b) x) to expand to (|SETF FOO| x a b).
-;;;
-;;; do-standard-defsetf A macro interface for use at top level
-;;; in files. Unfortunately, users may
-;;; have to use this for a while.
-;;;
-;;; do-standard-defsetfs-for-defclass A special version called by defclass.
-;;;
-;;; do-standard-defsetf-1 A functional interface called by the
-;;; above, defmethod and defgeneric.
-;;; Since this is all a crock anyways,
-;;; users are free to call this as well.
-;;;
-;;; FIXME: Once we fix up SETF, a lot of stuff around here should evaporate.
-(defmacro do-standard-defsetf (&rest function-names)
- `(eval-when (:compile-toplevel :load-toplevel :execute)
- (dolist (fn-name ',function-names) (do-standard-defsetf-1 fn-name))))
-
-(defun do-standard-defsetfs-for-defclass (accessors)
- (dolist (name accessors) (do-standard-defsetf-1 name)))
-
-(defun do-standard-defsetf-1 (function-name)
- #+setf
- (declare (ignore function-name))
- #+setf nil
- #-setf
- (unless (and (setfboundp function-name)
- (get function-name 'standard-setf))
- (setf (get function-name 'standard-setf) t)
- (let* ((setf-function-name (get-setf-function-name function-name)))
- (eval `(defsetf ,function-name (&rest accessor-args) (new-value)
- (let* ((bindings (mapcar #'(lambda (x) `(,(gensym) ,x)) accessor-args))
- (vars (mapcar #'car bindings)))
- `(let ,bindings
- (,',setf-function-name ,new-value ,@vars))))))))
-
-(defun setfboundp (symbol)
- (fboundp `(setf ,symbol)))
-
-) ; EVAL-WHEN
-
-;;; PCL, like user code, must endure the fact that we don't have a
-;;; properly working SETF. Many things work because they get mentioned
-;;; by a DEFCLASS or DEFMETHOD before they are used, but others have
-;;; to be done by hand.
-;;;
-;;; FIXME: We don't have to do this stuff any more, do we?
-(do-standard-defsetf
- class-wrapper ;***
- generic-function-name
- method-function-plist
- method-function-get
- plist-value
- object-plist
- gdefinition
- slot-value-using-class)
+ `(setf ,name))
(defsetf slot-value set-slot-value)
projects / sbcl.git / blobdiff