0.9.1.35:
[sbcl.git] / src / pcl / boot.lisp
index da7fc9b..87c30fe 100644 (file)
@@ -68,16 +68,6 @@ bootstrapping.
 
 |#
 
-;;; FIXME: As of sbcl-0.6.9.10, PCL still uses this nonstandard type
-;;; of declaration internally. It would be good to figure out how to
-;;; get rid of it, or failing that, (1) document why it's needed and
-;;; (2) use a private symbol with a forbidding name which suggests
-;;; it's not to be messed with by the user (e.g. SB-PCL:%CLASS)
-;;; instead of the too-inviting CLASS. (I tried just deleting the
-;;; declarations in MAKE-METHOD-LAMBDA-INTERNAL ca. sbcl-0.6.9.10, but
-;;; then things break.)
-(declaim (declaration class))
-
 (declaim (notinline make-a-method
                    add-named-method
                    ensure-generic-function-using-class
@@ -435,24 +425,16 @@ bootstrapping.
                                   specl))
                               specializers))
               (mname `(,(if (eq (cadr initargs-form) :function)
-                            'method 'fast-method)
-                       ,name ,@qualifiers ,specls))
-              (mname-sym (let ((*print-pretty* nil)
-                               ;; (We bind *PACKAGE* to KEYWORD here
-                               ;; as a way to force symbols to be
-                               ;; printed with explicit package
-                               ;; prefixes.)
-                               (target *package*)
-                               (*package* *keyword-package*))
-                           (format-symbol target "~S" mname))))
+                            'slow-method 'fast-method)
+                       ,name ,@qualifiers ,specls)))
          `(progn
-            (defun ,mname-sym ,(cadr fn-lambda)
+            (defun ,mname ,(cadr fn-lambda)
               ,@(cddr fn-lambda))
             ,(make-defmethod-form-internal
               name qualifiers `',specls
               unspecialized-lambda-list method-class-name
               `(list* ,(cadr initargs-form)
-                      #',mname-sym
+                      #',mname
                       ,@(cdddr initargs-form))
               pv-table-symbol)))
        (make-defmethod-form-internal
@@ -620,25 +602,39 @@ bootstrapping.
         '(ignorable))
        (t
         ;; Otherwise, we can usually make Python very happy.
-        (let ((type (info :type :kind specializer)))
-          (ecase type
-            ((:primitive :defined :instance :forthcoming-defclass-type)
-             `(type ,specializer ,parameter))
-            ((nil)
+        (let ((kind (info :type :kind specializer)))
+          (ecase kind
+            ((:primitive) `(type ,specializer ,parameter))
+            ((:defined) 
+             (let ((class (find-class specializer nil)))
+                ;; CLASS can be null here if the user has erroneously
+                ;; tried to use a defined type as a specializer; it
+                ;; can be a non-BUILT-IN-CLASS if the user defines a
+                ;; type and calls (SETF FIND-CLASS) in a consistent
+                ;; way.
+                (when (and class (typep class 'built-in-class))
+                  `(type ,specializer ,parameter))))
+            ((:instance nil)
              (let ((class (find-class specializer nil)))
-               (if class
-                   `(type ,(class-name class) ,parameter)
-                   (progn
-                     ;; we can get here, and still not have a failure
-                     ;; case, by doing MOP programming like (PROGN
-                     ;; (ENSURE-CLASS 'FOO) (DEFMETHOD BAR ((X FOO))
-                     ;; ...)).  Best to let the user know we haven't
-                     ;; been able to extract enough information:
-                     (style-warn
-                      "~@<can't find type for presumed class ~S in ~S.~@:>"
-                      specializer
-                      'parameter-specializer-declaration-in-defmethod)
-                     '(ignorable))))))))))
+               (cond
+                 (class
+                  (if (typep class '(or built-in-class structure-class))
+                      `(type ,specializer ,parameter)
+                      ;; don't declare CLOS classes as parameters;
+                      ;; it's too expensive.
+                      '(ignorable)))
+                 (t
+                  ;; we can get here, and still not have a failure
+                  ;; case, by doing MOP programming like (PROGN
+                  ;; (ENSURE-CLASS 'FOO) (DEFMETHOD BAR ((X FOO))
+                  ;; ...)).  Best to let the user know we haven't
+                  ;; been able to extract enough information:
+                  (style-warn
+                   "~@<can't find type for presumed class ~S in ~S.~@:>"
+                   specializer
+                   'parameter-specializer-declaration-in-defmethod)
+                  '(ignorable)))))
+            ((:forthcoming-defclass-type) '(ignorable)))))))
 
 (defun make-method-lambda-internal (method-lambda &optional env)
   (unless (and (consp method-lambda) (eq (car method-lambda) 'lambda))
@@ -1013,15 +1009,21 @@ bootstrapping.
           (cond ((null args)
                  (if (eql nreq 0)
                      (invoke-fast-method-call emf)
-                     (error "wrong number of args")))
+                     (error 'simple-program-error
+                            :format-control "invalid number of arguments: 0"
+                            :format-arguments nil)))
                 ((null (cdr args))
                  (if (eql nreq 1)
                      (invoke-fast-method-call emf (car args))
-                     (error "wrong number of args")))
+                     (error 'simple-program-error
+                            :format-control "invalid number of arguments: 1"
+                            :format-arguments nil)))
                 ((null (cddr args))
                  (if (eql nreq 2)
                      (invoke-fast-method-call emf (car args) (cadr args))
-                     (error "wrong number of args")))
+                     (error 'simple-program-error
+                            :format-control "invalid number of arguments: 2"
+                            :format-arguments nil)))
                 (t
                  (apply (fast-method-call-function emf)
                         (fast-method-call-pv-cell emf)
@@ -1032,7 +1034,10 @@ bootstrapping.
            args
            (method-call-call-method-args emf)))
     (fixnum
-     (cond ((null args) (error "1 or 2 args were expected."))
+     (cond ((null args)
+           (error 'simple-program-error
+                  :format-control "invalid number of arguments: 0"
+                  :format-arguments nil))
           ((null (cdr args))
            (let* ((slots (get-slots (car args)))
                    (value (clos-slots-ref slots emf)))
@@ -1040,16 +1045,19 @@ bootstrapping.
                  (slot-unbound-internal (car args) emf)
                  value)))
           ((null (cddr args))
-             (setf (clos-slots-ref (get-slots (cadr args)) emf)
-                  (car args)))
-          (t (error "1 or 2 args were expected."))))
+           (setf (clos-slots-ref (get-slots (cadr args)) emf)
+                 (car args)))
+          (t (error 'simple-program-error
+                    :format-control "invalid number of arguments"
+                    :format-arguments nil))))
     (fast-instance-boundp
      (if (or (null args) (cdr args))
-        (error "1 arg was expected.")
-       (let ((slots (get-slots (car args))))
-        (not (eq (clos-slots-ref slots
-                                 (fast-instance-boundp-index emf))
-                 +slot-unbound+)))))
+        (error 'simple-program-error
+               :format-control "invalid number of arguments"
+               :format-arguments nil)
+        (let ((slots (get-slots (car args))))
+          (not (eq (clos-slots-ref slots (fast-instance-boundp-index emf))
+                   +slot-unbound+)))))
     (function
      (apply emf args))))
 \f
@@ -1262,7 +1270,7 @@ bootstrapping.
                   ((eq (car form) 'next-method-p)
                    (setq next-method-p-p t)
                    form)
-                  ((eq (car form) 'setq)
+                  ((memq (car form) '(setq multiple-value-setq))
                    ;; FIXME: this is possibly a little strong as
                    ;; conditions go.  Ideally we would want to detect
                    ;; which, if any, of the method parameters are
@@ -1419,7 +1427,7 @@ bootstrapping.
     method))
 
 (defun make-method-spec (gf-spec qualifiers unparsed-specializers)
-  `(method ,gf-spec ,@qualifiers ,unparsed-specializers))
+  `(slow-method ,gf-spec ,@qualifiers ,unparsed-specializers))
 
 (defun initialize-method-function (initargs &optional return-function-p method)
   (let* ((mf (getf initargs :function))
@@ -1437,20 +1445,7 @@ bootstrapping.
        (when mf
          (setq mf (set-fun-name mf method-spec)))
        (when mff
-         (let ((name `(,(or (get (car method-spec) 'fast-sym)
-                            (setf (get (car method-spec) 'fast-sym)
-                                  ;; KLUDGE: If we're going to be
-                                  ;; interning private symbols in our
-                                  ;; a this way, it would be cleanest
-                                  ;; to use a separate package
-                                  ;; %PCL-PRIVATE or something, and
-                                  ;; failing that, to use a special
-                                  ;; symbol prefix denoting privateness.
-                                  ;; -- WHN 19991201
-                                  (format-symbol *pcl-package*
-                                                 "FAST-~A" 
-                                                 (car method-spec))))
-                       ,@(cdr method-spec))))
+         (let ((name `(fast-method ,@(cdr method-spec))))
            (set-fun-name mff name)
            (unless mf
              (set-mf-property :name name)))))
@@ -1648,13 +1643,6 @@ bootstrapping.
 (defun arg-info-nkeys (arg-info)
   (count-if (lambda (x) (neq x t)) (arg-info-metatypes arg-info)))
 
-;;; Keep pages clean by not setting if the value is already the same.
-(defmacro esetf (pos val)
-  (with-unique-names (valsym)
-    `(let ((,valsym ,val))
-       (unless (equal ,pos ,valsym)
-        (setf ,pos ,valsym)))))
-
 (defun create-gf-lambda-list (lambda-list)
   ;;; Create a gf lambda list from a method lambda list
   (loop for x in lambda-list
@@ -1688,22 +1676,21 @@ bootstrapping.
              (error "The lambda-list ~S is incompatible with ~
                     existing methods of ~S."
                     lambda-list gf))))
-        (esetf (arg-info-lambda-list arg-info)
-               (if lambda-list-p
-                   lambda-list
+        (setf (arg-info-lambda-list arg-info)
+             (if lambda-list-p
+                 lambda-list
                    (create-gf-lambda-list lambda-list)))
        (when (or lambda-list-p argument-precedence-order
                  (null (arg-info-precedence arg-info)))
-         (esetf (arg-info-precedence arg-info)
-                (compute-precedence lambda-list nreq
-                                    argument-precedence-order)))
-       (esetf (arg-info-metatypes arg-info) (make-list nreq))
-       (esetf (arg-info-number-optional arg-info) nopt)
-       (esetf (arg-info-key/rest-p arg-info) (not (null (or keysp restp))))
-       (esetf (arg-info-keys arg-info)
-              (if lambda-list-p
-                  (if allow-other-keys-p t keywords)
-                  (arg-info-key/rest-p arg-info)))))
+         (setf (arg-info-precedence arg-info)
+               (compute-precedence lambda-list nreq argument-precedence-order)))
+       (setf (arg-info-metatypes arg-info) (make-list nreq))
+       (setf (arg-info-number-optional arg-info) nopt)
+       (setf (arg-info-key/rest-p arg-info) (not (null (or keysp restp))))
+       (setf (arg-info-keys arg-info)
+             (if lambda-list-p
+                 (if allow-other-keys-p t keywords)
+                 (arg-info-key/rest-p arg-info)))))
     (when new-method
       (check-method-arg-info gf arg-info new-method))
     (set-arg-info1 gf arg-info new-method methods was-valid-p first-p)
@@ -1778,52 +1765,52 @@ bootstrapping.
          (setq type (cond ((null type) new-type)
                           ((eq type new-type) type)
                           (t nil)))))
-      (esetf (arg-info-metatypes arg-info) metatypes)
-      (esetf (gf-info-simple-accessor-type arg-info) type)))
+      (setf (arg-info-metatypes arg-info) metatypes)
+      (setf (gf-info-simple-accessor-type arg-info) type)))
   (when (or (not was-valid-p) first-p)
     (multiple-value-bind (c-a-m-emf std-p)
        (if (early-gf-p gf)
            (values t t)
            (compute-applicable-methods-emf gf))
-      (esetf (gf-info-static-c-a-m-emf arg-info) c-a-m-emf)
-      (esetf (gf-info-c-a-m-emf-std-p arg-info) std-p)
+      (setf (gf-info-static-c-a-m-emf arg-info) c-a-m-emf)
+      (setf (gf-info-c-a-m-emf-std-p arg-info) std-p)
       (unless (gf-info-c-a-m-emf-std-p arg-info)
-       (esetf (gf-info-simple-accessor-type arg-info) t))))
+       (setf (gf-info-simple-accessor-type arg-info) t))))
   (unless was-valid-p
     (let ((name (if (eq *boot-state* 'complete)
                    (generic-function-name gf)
                    (!early-gf-name gf))))
-      (esetf (gf-precompute-dfun-and-emf-p arg-info)
-            (cond
-              ((and (consp name)
-                    (member (car name)
-                            *internal-pcl-generalized-fun-name-symbols*))
+      (setf (gf-precompute-dfun-and-emf-p arg-info)
+           (cond
+             ((and (consp name)
+                   (member (car name)
+                           *internal-pcl-generalized-fun-name-symbols*))
                nil)
-              (t (let* ((symbol (fun-name-block-name name))
-                        (package (symbol-package symbol)))
-                   (and (or (eq package *pcl-package*)
-                            (memq package (package-use-list *pcl-package*)))
-                        ;; FIXME: this test will eventually be
-                        ;; superseded by the *internal-pcl...* test,
-                        ;; above.  While we are in a process of
-                        ;; transition, however, it should probably
-                        ;; remain.
-                        (not (find #\Space (symbol-name symbol))))))))))
-  (esetf (gf-info-fast-mf-p arg-info)
-        (or (not (eq *boot-state* 'complete))
-            (let* ((method-class (generic-function-method-class gf))
-                   (methods (compute-applicable-methods
-                             #'make-method-lambda
-                             (list gf (class-prototype method-class)
-                                   '(lambda) nil))))
-              (and methods (null (cdr methods))
-                   (let ((specls (method-specializers (car methods))))
-                     (and (classp (car specls))
-                          (eq 'standard-generic-function
-                              (class-name (car specls)))
-                          (classp (cadr specls))
-                          (eq 'standard-method
-                              (class-name (cadr specls)))))))))
+             (t (let* ((symbol (fun-name-block-name name))
+                       (package (symbol-package symbol)))
+                  (and (or (eq package *pcl-package*)
+                           (memq package (package-use-list *pcl-package*)))
+                       ;; FIXME: this test will eventually be
+                       ;; superseded by the *internal-pcl...* test,
+                       ;; above.  While we are in a process of
+                       ;; transition, however, it should probably
+                       ;; remain.
+                       (not (find #\Space (symbol-name symbol))))))))))
+  (setf (gf-info-fast-mf-p arg-info)
+       (or (not (eq *boot-state* 'complete))
+           (let* ((method-class (generic-function-method-class gf))
+                  (methods (compute-applicable-methods
+                            #'make-method-lambda
+                            (list gf (class-prototype method-class)
+                                  '(lambda) nil))))
+             (and methods (null (cdr methods))
+                  (let ((specls (method-specializers (car methods))))
+                    (and (classp (car specls))
+                         (eq 'standard-generic-function
+                             (class-name (car specls)))
+                         (classp (cadr specls))
+                         (eq 'standard-method
+                             (class-name (cadr specls)))))))))
   arg-info)
 
 ;;; This is the early definition of ENSURE-GENERIC-FUNCTION-USING-CLASS.
@@ -2311,11 +2298,10 @@ bootstrapping.
              gf (method-generic-function method)
              temp (and gf (generic-function-name gf))
              name (if temp
-                      (intern-fun-name
-                        (make-method-spec temp
-                                          (method-qualifiers method)
-                                          (unparse-specializers
-                                            (method-specializers method))))
+                       (make-method-spec temp
+                                         (method-qualifiers method)
+                                         (unparse-specializers
+                                          (method-specializers method)))
                       (make-symbol (format nil "~S" method))))
        (multiple-value-bind (gf-spec quals specls)
            (parse-defmethod spec)
@@ -2329,9 +2315,8 @@ bootstrapping.
                 (and
                   (setq method (get-method gf quals specls errorp))
                   (setq name
-                        (intern-fun-name (make-method-spec gf-spec
-                                                           quals
-                                                           specls))))))))
+                         (make-method-spec
+                          gf-spec quals (unparse-specializers specls))))))))
     (values gf method name)))
 \f
 (defun extract-parameters (specialized-lambda-list)