0.6.10.19:
[sbcl.git] / src / pcl / boot.lisp
index a8b28ee..c698023 100644 (file)
@@ -105,25 +105,16 @@ bootstrapping.
 ;;; early definition. Do this in a way that makes sure that if we
 ;;; redefine one of the early definitions the redefinition will take
 ;;; effect. This makes development easier.
-;;;
-;;; The function which generates the redirection closure is pulled out
-;;; into a separate piece of code because of a bug in ExCL which
-;;; causes this not to work if it is inlined.
-;;; FIXME: We no longer need to worry about ExCL now, so we could unscrew this.
 (eval-when (:load-toplevel :execute)
-
-(defun !redirect-early-function-internal (real early)
-  (setf (gdefinition real)
-       (set-function-name
-        #'(lambda (&rest args)
-            (apply (the function (symbol-function early)) args))
-        real)))
-
+  
 (dolist (fns *!early-functions*)
   (let ((name (car fns))
        (early-name (cadr fns)))
-    (!redirect-early-function-internal name early-name)))
-
+    (setf (gdefinition name)
+            (set-function-name
+             #'(lambda (&rest args)
+                 (apply (the function (name-get-fdefinition early-name)) args))
+             name))))
 ) ; EVAL-WHEN
 
 ;;; *!GENERIC-FUNCTION-FIXUPS* is used by !FIX-EARLY-GENERIC-FUNCTIONS
@@ -172,8 +163,6 @@ bootstrapping.
   (expand-defgeneric function-name lambda-list options))
 
 (defun expand-defgeneric (function-name lambda-list options)
-  (when (listp function-name)
-    (do-standard-defsetf-1 (sb-int:function-name-block-name function-name)))
   (let ((initargs ())
        (methods ()))
     (flet ((duplicate-option (name)
@@ -223,10 +212,7 @@ bootstrapping.
       `(progn
         (eval-when (:compile-toplevel :load-toplevel :execute)
           (compile-or-load-defgeneric ',function-name))
-        ,(make-top-level-form
-          `(defgeneric ,function-name)
-          *defgeneric-times*
-          `(load-defgeneric ',function-name ',lambda-list ,@initargs))
+         (load-defgeneric ',function-name ',lambda-list ,@initargs)
         ,@(mapcar #'expand-method-definition methods)
         `,(function ,function-name)))))
 
@@ -239,8 +225,6 @@ bootstrapping.
          (sb-kernel:specifier-type 'function))))
 
 (defun load-defgeneric (function-name lambda-list &rest initargs)
-  (when (listp function-name)
-    (do-standard-defsetf-1 (cadr function-name)))
   (when (fboundp function-name)
     (sb-kernel::style-warn "redefining ~S in DEFGENERIC" function-name))
   (apply #'ensure-generic-function
@@ -311,8 +295,6 @@ bootstrapping.
                         lambda-list
                         body
                         env)
-  (when (listp name)
-    (do-standard-defsetf-1 (cadr name)))
   (let ((*make-instance-function-keys* nil)
        (*optimize-asv-funcall-p* t)
        (*asv-readers* nil) (*asv-writers* nil) (*asv-boundps* nil))
@@ -405,7 +387,7 @@ bootstrapping.
                                        ;; prefixes.)
                                        (*package* sb-int:*keyword-package*))
                                    (format nil "~S" mname)))))
-         `(eval-when ,*defmethod-times*
+         `(eval-when (:load-toplevel :execute)
            (defun ,mname-sym ,(cadr fn-lambda)
              ,@(cddr fn-lambda))
            ,(make-defmethod-form-internal
@@ -415,20 +397,17 @@ bootstrapping.
                      #',mname-sym
                      ,@(cdddr initargs-form))
              pv-table-symbol)))
-       (make-top-level-form
-        `(defmethod ,name ,@qualifiers ,specializers)
-        *defmethod-times*
-        (make-defmethod-form-internal
-         name qualifiers
+      (make-defmethod-form-internal
+       name qualifiers
          `(list ,@(mapcar #'(lambda (specializer)
                               (if (consp specializer)
                                   ``(,',(car specializer)
                                      ,,(cadr specializer))
                                   `',specializer))
-                   specializers))
+                           specializers))
          unspecialized-lambda-list method-class-name
          initargs-form
-         pv-table-symbol)))))
+         pv-table-symbol))))
 
 (defun make-defmethod-form-internal
     (name qualifiers specializers-form unspecialized-lambda-list
@@ -491,6 +470,63 @@ bootstrapping.
   (declare (ignore proto-gf proto-method))
   (make-method-lambda-internal method-lambda env))
 
+;;; a helper function for creating Python-friendly type declarations
+;;; in DEFMETHOD forms
+(defun parameter-specializer-declaration-in-defmethod (parameter specializer)
+  (cond ((and (consp specializer)
+             (eq (car specializer) 'eql))
+        ;; KLUDGE: ANSI, in its wisdom, says that
+        ;; EQL-SPECIALIZER-FORMs in EQL specializers are evaluated at
+        ;; DEFMETHOD expansion time. Thus, although one might think
+        ;; that in
+        ;;   (DEFMETHOD FOO ((X PACKAGE)
+        ;;                   (Y (EQL 12))
+        ;;      ..))
+        ;; the PACKAGE and (EQL 12) forms are both parallel type
+        ;; names, they're not, as is made clear when you do
+        ;;   (DEFMETHOD FOO ((X PACKAGE)
+        ;;                   (Y (EQL 'BAR)))
+        ;;     ..)
+        ;; where Y needs to be a symbol named "BAR", not some cons
+        ;; made by (CONS 'QUOTE 'BAR). I.e. when the
+        ;; EQL-SPECIALIZER-FORM is (EQL 'X), it requires an argument
+        ;; to be of type (EQL X). It'd be easy to transform one to
+        ;; the other, but it'd be somewhat messier to do so while
+        ;; ensuring that the EQL-SPECIALIZER-FORM is only EVAL'd
+        ;; once. (The new code wouldn't be messy, but it'd require a
+        ;; big transformation of the old code.) So instead we punt.
+        ;; -- WHN 20000610
+        '(ignorable))
+       ((member specializer
+                ;; KLUDGE: For some low-level implementation
+                ;; classes, perhaps because of some problems related
+                ;; to the incomplete integration of PCL into SBCL's
+                ;; type system, some specializer classes can't be
+                ;; declared as argument types. E.g.
+                ;;   (DEFMETHOD FOO ((X SLOT-OBJECT))
+                ;;     (DECLARE (TYPE SLOT-OBJECT X))
+                ;;     ..)
+                ;; loses when
+                ;;   (DEFSTRUCT BAR A B)
+                ;;   (FOO (MAKE-BAR))
+                ;; perhaps because of the way that STRUCTURE-OBJECT
+                ;; inherits both from SLOT-OBJECT and from
+                ;; SB-KERNEL:INSTANCE. In an effort to sweep such
+                ;; problems under the rug, we exclude these problem
+                ;; cases by blacklisting them here. -- WHN 2001-01-19
+                '(slot-object))
+        '(ignorable))
+       ((not (eq *boot-state* 'complete))
+        ;; KLUDGE: PCL, in its wisdom, sometimes calls methods with
+        ;; types which don't match their specializers. (Specifically,
+        ;; it calls ENSURE-CLASS-USING-CLASS (T NULL) with a non-NULL
+        ;; second argument.) Hopefully it only does this kind of
+        ;; weirdness when bootstrapping.. -- WHN 20000610
+        '(ignorable))
+       (t
+        ;; Otherwise, we can make Python very happy.
+        `(type ,specializer ,parameter))))
+
 (defun make-method-lambda-internal (method-lambda &optional env)
   (unless (and (consp method-lambda) (eq (car method-lambda) 'lambda))
     (error "The METHOD-LAMBDA argument to MAKE-METHOD-LAMBDA, ~S, ~
@@ -525,57 +561,15 @@ bootstrapping.
                                    parameters
                                    specializers))
                  ;; These TYPE declarations weren't in the original
-                 ;; PCL code, but Python likes them a lot. (We're
-                 ;; telling the compiler about our knowledge of
-                 ;; specialized argument types so that it can avoid
-                 ;; run-time type overhead, which can be a big win
-                 ;; for Python.)
-                 ,@(mapcar (lambda (a s)
-                             (cond ((and (consp s)
-                                         (eql (car s) 'eql))
-                                    ;; KLUDGE: ANSI, in its wisdom, says
-                                    ;; that EQL-SPECIALIZER-FORMs in EQL
-                                    ;; specializers are evaluated at
-                                    ;; DEFMETHOD expansion time. Thus,
-                                    ;; although one might think that in
-                                    ;;   (DEFMETHOD FOO ((X PACKAGE)
-                                    ;;                   (Y (EQL 12))
-                                    ;;      ..))
-                                    ;; the PACKAGE and (EQL 12) forms are
-                                    ;; both parallel type names, they're
-                                    ;; not, as is made clear when you do
-                                    ;;   (DEFMETHOD FOO ((X PACKAGE)
-                                    ;;                   (Y (EQL 'BAR)))
-                                    ;;     ..)
-                                    ;; where Y needs to be a symbol
-                                    ;; named "BAR", not some cons made by
-                                    ;; (CONS 'QUOTE 'BAR). I.e. when
-                                    ;; the EQL-SPECIALIZER-FORM is (EQL 'X),
-                                    ;; it requires an argument to be of
-                                    ;; type (EQL X). It'd be easy to transform
-                                    ;; one to the other, but it'd be somewhat
-                                    ;; messier to do so while ensuring that
-                                    ;; the EQL-SPECIALIZER-FORM is only
-                                    ;; EVAL'd once. (The new code wouldn't
-                                    ;; be messy, but it'd require a big
-                                    ;; transformation of the old code.)
-                                    ;; So instead we punt. -- WHN 20000610
-                                    '(ignorable))
-                                   ((not (eq *boot-state* 'complete))
-                                    ;; KLUDGE: PCL, in its wisdom, 
-                                    ;; sometimes calls methods with
-                                    ;; types which don't match their
-                                    ;; specializers. (Specifically, it calls
-                                    ;; ENSURE-CLASS-USING-CLASS (T NULL)
-                                    ;; with a non-NULL second argument.)
-                                    ;; Hopefully it only does this kind
-                                    ;; of weirdness when bootstrapping..
-                                    ;; -- WHN 20000610
-                                    '(ignorable))
-                                   (t
-                                    ;; Otherwise, we can make Python
-                                    ;; very happy.
-                                    `(type ,s ,a))))
+                 ;; PCL code, but the Python compiler likes them a
+                 ;; lot. (We're telling the compiler about our
+                 ;; knowledge of specialized argument types so that
+                 ;; it can avoid run-time type dispatch overhead,
+                 ;; which can be a huge win for Python.)
+                 ;;
+                 ;; FIXME: Perhaps these belong in
+                 ;; ADD-METHOD-DECLARATIONS instead of here?
+                 ,@(mapcar #'parameter-specializer-declaration-in-defmethod
                            parameters
                            specializers)))
               (method-lambda
@@ -609,15 +603,12 @@ bootstrapping.
                                      (constantp (car real-body))))
               (constant-value (and constant-value-p
                                    (eval (car real-body))))
-              ;; FIXME: This can become a bare AND (no IF), just like
-              ;; the expression for CONSTANT-VALUE just above.
-              (plist (if (and constant-value-p
-                              (or (typep constant-value
-                                         '(or number character))
-                                  (and (symbolp constant-value)
-                                       (symbol-package constant-value))))
-                         (list :constant-value constant-value)
-                         ()))
+              (plist (and constant-value-p
+                           (or (typep constant-value
+                                      '(or number character))
+                               (and (symbolp constant-value)
+                                    (symbol-package constant-value)))
+                           (list :constant-value constant-value)))
               (applyp (dolist (p lambda-list nil)
                         (cond ((memq p '(&optional &rest &key))
                                (return t))
@@ -826,7 +817,7 @@ bootstrapping.
               `(((typep ,emf 'fixnum)
                  (let* ((.slots. (get-slots-or-nil
                                   ,(car required-args+rest-arg)))
-                        (value (when .slots. (%instance-ref .slots. ,emf))))
+                        (value (when .slots. (instance-ref .slots. ,emf))))
                    (if (eq value +slot-unbound+)
                        (slot-unbound-internal ,(car required-args+rest-arg)
                                               ,emf)
@@ -836,15 +827,15 @@ bootstrapping.
                  (let ((.new-value. ,(car required-args+rest-arg))
                        (.slots. (get-slots-or-nil
                                  ,(car required-args+rest-arg))))
-                   (when .slots. ; just to avoid compiler warnings
-                     (setf (%instance-ref .slots. ,emf) .new-value.))))))
+                    (when .slots.
+                         (setf (instance-ref .slots. ,emf) .new-value.))))))
           #||
           ,@(when (and (null restp) (= 1 (length required-args+rest-arg)))
               `(((typep ,emf 'fast-instance-boundp)
                  (let ((.slots. (get-slots-or-nil
                                  ,(car required-args+rest-arg))))
                    (and .slots.
-                        (not (eq (%instance-ref
+                        (not (eq (instance-ref
                                   .slots. (fast-instance-boundp-index ,emf))
                                  +slot-unbound+)))))))
           ||#
@@ -896,20 +887,22 @@ bootstrapping.
     (fixnum
      (cond ((null args) (error "1 or 2 args were expected."))
           ((null (cdr args))
-           (let ((value (%instance-ref (get-slots (car args)) emf)))
+           (let* ((slots (get-slots (car args)))
+                   (value (instance-ref slots emf)))
              (if (eq value +slot-unbound+)
                  (slot-unbound-internal (car args) emf)
                  value)))
           ((null (cddr args))
-           (setf (%instance-ref (get-slots (cadr args)) emf)
-                 (car args)))
+             (setf (instance-ref (get-slots (cadr args)) emf)
+                     (car args)))
           (t (error "1 or 2 args were expected."))))
     (fast-instance-boundp
      (if (or (null args) (cdr args))
         (error "1 arg was expected.")
-        (not (eq (%instance-ref (get-slots (car args))
-                                (fast-instance-boundp-index emf))
-                 +slot-unbound+))))
+       (let ((slots (get-slots (car args))))
+        (not (eq (instance-ref slots
+                                 (fast-instance-boundp-index emf))
+                 +slot-unbound+)))))
     (function
      (apply emf args))))
 
@@ -1101,24 +1094,16 @@ bootstrapping.
                                (setq closurep t)
                                form)
                               (t nil))))
-                  (;; FIXME: should be MEMQ or FIND :TEST #'EQ
-                   (and (or (eq (car form) 'slot-value)
-                            (eq (car form) 'set-slot-value)
-                            (eq (car form) 'slot-boundp))
+                  ((and (memq (car form)
+                               '(slot-value set-slot-value slot-boundp))
                         (constantp (caddr form)))
-                   (let ((parameter (can-optimize-access form
-                                                         required-parameters
-                                                         env)))
-                     ;; FIXME: could be
-                     ;;   (LET ((FUN (ECASE (CAR FORM) ..)))
-                     ;;     (FUNCALL FUN SLOTS PARAMETER FORM))
-                     (ecase (car form)
-                       (slot-value
-                        (optimize-slot-value     slots parameter form))
-                       (set-slot-value
-                        (optimize-set-slot-value slots parameter form))
-                       (slot-boundp
-                        (optimize-slot-boundp    slots parameter form)))))
+                     (let ((parameter
+                            (can-optimize-access form required-parameters env)))
+                      (let ((fun (ecase (car form)
+                                   (slot-value #'optimize-slot-value)
+                                   (set-slot-value #'optimize-set-slot-value)
+                                   (slot-boundp #'optimize-slot-boundp))))
+                        (funcall fun slots parameter form))))
                   ((and (eq (car form) 'apply)
                         (consp (cadr form))
                         (eq (car (cadr form)) 'function)
@@ -1171,8 +1156,7 @@ bootstrapping.
          *mf1p* (gethash method-function *method-function-plist*)))
   *mf1p*)
 
-(defun #-setf SETF\ SB-PCL\ METHOD-FUNCTION-PLIST
-       #+setf (setf method-function-plist)
+(defun (setf method-function-plist)
     (val method-function)
   (unless (eq method-function *mf1*)
     (rotatef *mf1* *mf2*)
@@ -1187,8 +1171,7 @@ bootstrapping.
 (defun method-function-get (method-function key &optional default)
   (getf (method-function-plist method-function) key default))
 
-(defun #-setf SETF\ SB-PCL\ METHOD-FUNCTION-GET
-       #+setf (setf method-function-get)
+(defun (setf method-function-get)
     (val method-function key)
   (setf (getf (method-function-plist method-function) key) val))
 
@@ -1206,7 +1189,6 @@ bootstrapping.
 
 (defun load-defmethod
     (class name quals specls ll initargs &optional pv-table-symbol)
-  (when (listp name) (do-standard-defsetf-1 (cadr name)))
   (setq initargs (copy-tree initargs))
   (let ((method-spec (or (getf initargs ':method-spec)
                         (make-method-spec name quals specls))))
@@ -1218,20 +1200,16 @@ bootstrapping.
 (defun load-defmethod-internal
     (method-class gf-spec qualifiers specializers lambda-list
                  initargs pv-table-symbol)
-  (when (listp gf-spec) (do-standard-defsetf-1 (cadr gf-spec)))
   (when pv-table-symbol
     (setf (getf (getf initargs ':plist) :pv-table-symbol)
          pv-table-symbol))
-  ;; FIXME: It seems as though I should be able to get this to work.
-  ;; But it keeps on screwing up PCL bootstrapping.
-  #+nil
   (when (and (eq *boot-state* 'complete)
             (fboundp gf-spec))
-    (let* ((gf (symbol-function gf-spec))
+    (let* ((gf (name-get-fdefinition gf-spec))
           (method (and (generic-function-p gf)
                        (find-method gf
                                     qualifiers
-                                    (mapcar #'find-class specializers)
+                                     (parse-specializers specializers)
                                     nil))))
       (when method
        (sb-kernel::style-warn "redefining ~S~{ ~S~} ~S in DEFMETHOD"
@@ -1356,14 +1334,14 @@ bootstrapping.
                                  keywords keyword-parameters)
       (analyze-lambda-list lambda-list)
     (declare (ignore keyword-parameters))
-    (let* ((old (sb-c::info :function :type name)) ;FIXME:FDOCUMENTATION instead?
-          (old-ftype (if (sb-c::function-type-p old) old nil))
-          (old-restp (and old-ftype (sb-c::function-type-rest old-ftype)))
+    (let* ((old (sb-int:info :function :type name)) ;FIXME:FDOCUMENTATION instead?
+          (old-ftype (if (sb-kernel:function-type-p old) old nil))
+          (old-restp (and old-ftype (sb-kernel:function-type-rest old-ftype)))
           (old-keys (and old-ftype
-                         (mapcar #'sb-c::key-info-name
-                                 (sb-c::function-type-keywords old-ftype))))
-          (old-keysp (and old-ftype (sb-c::function-type-keyp old-ftype)))
-          (old-allowp (and old-ftype (sb-c::function-type-allowp old-ftype)))
+                         (mapcar #'sb-kernel:key-info-name
+                                 (sb-kernel:function-type-keywords old-ftype))))
+          (old-keysp (and old-ftype (sb-kernel:function-type-keyp old-ftype)))
+          (old-allowp (and old-ftype (sb-kernel:function-type-allowp old-ftype)))
           (keywords (union old-keys (mapcar #'keyword-spec-name keywords))))
       `(function ,(append (make-list nrequired :initial-element 't)
                          (when (plusp noptional)
@@ -2031,7 +2009,7 @@ bootstrapping.
 
     (dolist (fn *!early-functions*)
       (sb-int:/show fn)
-      (setf (gdefinition (car fn)) (symbol-function (caddr fn))))
+      (setf (gdefinition (car fn)) (name-get-fdefinition (caddr fn))))
 
     (dolist (fixup *!generic-function-fixups*)
       (sb-int:/show fixup)
@@ -2042,7 +2020,7 @@ bootstrapping.
                                         (specializers (second method))
                                         (method-fn-name (third method))
                                         (fn-name (or method-fn-name fspec))
-                                        (fn (symbol-function fn-name))
+                                        (fn (name-get-fdefinition fn-name))
                                         (initargs
                                          (list :function
                                                (set-function-name
@@ -2179,8 +2157,7 @@ bootstrapping.
             ;; "internal error: unrecognized lambda-list keyword ~S"?
             (warn "Unrecognized lambda-list keyword ~S in arglist.~%~
                    Assuming that the symbols following it are parameters,~%~
-                   and not allowing any parameter specializers to follow~%~
-                   to follow it."
+                   and not allowing any parameter specializers to follow it."
                   arg))
           ;; When we are at a lambda-list keyword, the parameters
           ;; don't include the lambda-list keyword; the lambda-list