0.pre7.98:
[sbcl.git] / src / pcl / boot.lisp
index af7946d..221647a 100644 (file)
@@ -109,7 +109,7 @@ bootstrapping.
   (let ((name (car fns))
        (early-name (cadr fns)))
     (setf (gdefinition name)
-            (set-function-name
+            (set-fun-name
              (lambda (&rest args)
               (apply (fdefinition early-name) args))
              name))))
@@ -131,12 +131,12 @@ bootstrapping.
       (standard-generic-function t t)
       real-get-method))
     (ensure-generic-function-using-class
-     ((generic-function function-name
+     ((generic-function fun-name
                        &key generic-function-class environment
                        &allow-other-keys)
       (generic-function t)
       real-ensure-gf-using-class--generic-function)
-     ((generic-function function-name
+     ((generic-function fun-name
                        &key generic-function-class environment
                        &allow-other-keys)
       (null t)
@@ -156,14 +156,11 @@ bootstrapping.
       (generic-function standard-method-combination t)
       standard-compute-effective-method))))
 \f
-(defmacro defgeneric (function-name lambda-list &body options)
-  (expand-defgeneric function-name lambda-list options))
-
-(defun expand-defgeneric (function-name lambda-list options)
+(defmacro defgeneric (fun-name lambda-list &body options)
   (let ((initargs ())
        (methods ()))
     (flet ((duplicate-option (name)
-            (error 'sb-kernel:simple-program-error
+            (error 'simple-program-error
                    :format-control "The option ~S appears more than once."
                    :format-arguments (list name)))
           (expand-method-definition (qab) ; QAB = qualifiers, arglist, body
@@ -171,12 +168,7 @@ bootstrapping.
                    (arglist (elt qab arglist-pos))
                    (qualifiers (subseq qab 0 arglist-pos))
                    (body (nthcdr (1+ arglist-pos) qab)))
-              (when (not (equal (cadr (getf initargs :method-combination))
-                                qualifiers))
-                (error "bad method specification in DEFGENERIC ~A~%~
-                        -- qualifier mismatch for lambda list ~A"
-                       function-name arglist))
-              `(defmethod ,function-name ,@qualifiers ,arglist ,@body))))
+              `(defmethod ,fun-name ,@qualifiers ,arglist ,@body))))
       (macrolet ((initarg (key) `(getf initargs ,key)))
        (dolist (option options)
          (let ((car-option (car option)))
@@ -199,7 +191,7 @@ bootstrapping.
              (t
               ;; ANSI requires that unsupported things must get a
               ;; PROGRAM-ERROR.
-              (error 'sb-kernel:simple-program-error
+              (error 'simple-program-error
                      :format-control "unsupported option ~S"
                      :format-arguments (list option))))))
 
@@ -208,27 +200,26 @@ bootstrapping.
                `',(initarg :declarations))))
       `(progn
         (eval-when (:compile-toplevel :load-toplevel :execute)
-          (compile-or-load-defgeneric ',function-name))
-         (load-defgeneric ',function-name ',lambda-list ,@initargs)
+          (compile-or-load-defgeneric ',fun-name))
+         (load-defgeneric ',fun-name ',lambda-list ,@initargs)
         ,@(mapcar #'expand-method-definition methods)
-        `,(function ,function-name)))))
-
-(defun compile-or-load-defgeneric (function-name)
-  (sb-kernel:proclaim-as-function-name function-name)
-  (sb-kernel:note-name-defined function-name :function)
-  (unless (eq (info :function :where-from function-name) :declared)
-    (setf (info :function :where-from function-name) :defined)
-    (setf (info :function :type function-name)
+        `,(function ,fun-name)))))
+
+(defun compile-or-load-defgeneric (fun-name)
+  (sb-kernel:proclaim-as-fun-name fun-name)
+  (sb-kernel:note-name-defined fun-name :function)
+  (unless (eq (info :function :where-from fun-name) :declared)
+    (setf (info :function :where-from fun-name) :defined)
+    (setf (info :function :type fun-name)
          (sb-kernel:specifier-type 'function))))
 
-(defun load-defgeneric (function-name lambda-list &rest initargs)
-  (when (fboundp function-name)
-    (sb-kernel::style-warn "redefining ~S in DEFGENERIC" function-name))
+(defun load-defgeneric (fun-name lambda-list &rest initargs)
+  (when (fboundp fun-name)
+    (sb-kernel::style-warn "redefining ~S in DEFGENERIC" fun-name))
   (apply #'ensure-generic-function
-        function-name
+        fun-name
         :lambda-list lambda-list
-        :definition-source `((defgeneric ,function-name)
-                             ,*load-truename*)
+        :definition-source `((defgeneric ,fun-name) ,*load-truename*)
         initargs))
 \f
 (defmacro defmethod (&rest args &environment env)
@@ -348,7 +339,7 @@ bootstrapping.
                                 initargs-form &optional pv-table-symbol)
   (let (fn
        fn-lambda)
-    (if (and (interned-symbol-p (function-name-block-name name))
+    (if (and (interned-symbol-p (fun-name-block-name name))
             (every #'interned-symbol-p qualifiers)
             (every #'(lambda (s)
                        (if (consp s)
@@ -549,7 +540,7 @@ bootstrapping.
                  ;; These declarations seem to be used by PCL to pass
                  ;; information to itself; when I tried to delete 'em
                  ;; ca. 0.6.10 it didn't work. I'm not sure how
-                 ;; they work, but note the (VARIABLE-DECLARATION '%CLASS ..)
+                 ;; they work, but note the (VAR-DECLARATION '%CLASS ..)
                  ;; expression in CAN-OPTIMIZE-ACCESS1. -- WHN 2000-12-30
                  ,@(remove nil
                            (mapcar (lambda (a s) (and (symbolp s)
@@ -593,8 +584,7 @@ bootstrapping.
                   (declare (ignorable ,@required-parameters))
                   ,class-declarations
                   ,@declarations
-                  (block ,(function-name-block-name
-                           generic-function-name)
+                  (block ,(fun-name-block-name generic-function-name)
                     ,@real-body)))
               (constant-value-p (and (null (cdr real-body))
                                      (constantp (car real-body))))
@@ -707,7 +697,7 @@ bootstrapping.
                `(not (null .next-method.))))
      ,@body))
 
-(defstruct method-call
+(defstruct (method-call (:copier nil))
   (function #'identity :type function)
   call-method-args)
 
@@ -728,7 +718,7 @@ bootstrapping.
                             `(list ,@required-args+rest-arg))
                        (method-call-call-method-args ,method-call)))
 
-(defstruct fast-method-call
+(defstruct (fast-method-call (:copier nil))
   (function #'identity :type function)
   pv-cell
   next-method-call
@@ -745,7 +735,7 @@ bootstrapping.
                (fast-method-call-next-method-call ,method-call)
                ,@required-args+rest-arg))
 
-(defstruct fast-instance-boundp
+(defstruct (fast-instance-boundp (:copier nil))
   (index 0 :type fixnum))
 
 #-sb-fluid (declaim (sb-ext:freeze-type fast-instance-boundp))
@@ -806,7 +796,22 @@ bootstrapping.
   (unless (constantp restp)
     (error "The RESTP argument is not constant."))
   (setq restp (eval restp))
-  `(progn
+  `(locally
+
+     ;; In sbcl-0.6.11.43, the compiler would issue bogus warnings
+     ;; about type mismatches in unreachable code when we
+     ;; macroexpanded the GET-SLOTS-OR-NIL expressions here and
+     ;; byte-compiled the code. GET-SLOTS-OR-NIL is now an inline
+     ;; function instead of a macro, which seems sufficient to solve
+     ;; the problem all by itself (probably because of some quirk in
+     ;; the relative order of expansion and type inference) but we
+     ;; also use overkill by NOTINLINEing GET-SLOTS-OR-NIL, because it
+     ;; looks as though (1) inlining isn't that much of a win anyway,
+     ;; and (2a) once you miss the FAST-METHOD-CALL clause you're
+     ;; going to be slow anyway, but (2b) code bloat still hurts even
+     ;; when it's off the critical path.
+     (declare (notinline get-slots-or-nil))
+
      (trace-emf-call ,emf ,restp (list ,@required-args+rest-arg))
      (cond ((typep ,emf 'fast-method-call)
             (invoke-fast-method-call ,emf ,@required-args+rest-arg))
@@ -963,8 +968,8 @@ bootstrapping.
              (null closurep)
              (null applyp))
         `(let () ,@body))
-        ((and (null closurep)
-              (null applyp))
+       ((and (null closurep)
+             (null applyp))
         ;; OK to use MACROLET, and all args are mandatory
         ;; (else APPLYP would be true).
         `(call-next-method-bind
@@ -1094,8 +1099,9 @@ bootstrapping.
                   ((and (memq (car form)
                                '(slot-value set-slot-value slot-boundp))
                         (constantp (caddr form)))
-                     (let ((parameter
-                            (can-optimize-access form required-parameters env)))
+                     (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)
@@ -1126,7 +1132,7 @@ bootstrapping.
                next-method-p-p)))))
 
 (defun generic-function-name-p (name)
-  (and (legal-function-name-p name)
+  (and (legal-fun-name-p name)
        (gboundp name)
        (if (eq *boot-state* 'complete)
           (standard-generic-function-p (gdefinition name))
@@ -1190,7 +1196,6 @@ bootstrapping.
   (let ((method-spec (or (getf initargs ':method-spec)
                         (make-method-spec name quals specls))))
     (setf (getf initargs ':method-spec) method-spec)
-    (record-definition 'method method-spec)
     (load-defmethod-internal class name quals specls
                             ll initargs pv-table-symbol)))
 
@@ -1248,7 +1253,7 @@ bootstrapping.
               (setf (method-function-get mff p) v))))
       (when method-spec
        (when mf
-         (setq mf (set-function-name mf method-spec)))
+         (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)
@@ -1264,7 +1269,7 @@ bootstrapping.
                                                   (car method-spec))
                                           *pcl-package*)))
                         ,@(cdr method-spec))))
-           (set-function-name mff name)
+           (set-fun-name mff name)
            (unless mf
              (set-mf-property :name name)))))
       (when plist
@@ -1284,7 +1289,7 @@ bootstrapping.
 \f
 (defun analyze-lambda-list (lambda-list)
   (flet (;; FIXME: Is this redundant with SB-C::MAKE-KEYWORD-FOR-ARG?
-        (parse-keyword-argument (arg)
+        (parse-key-argument (arg)
           (if (listp arg)
               (if (listp (car arg))
                   (caar arg)
@@ -1314,7 +1319,7 @@ bootstrapping.
            (ecase state
              (required  (incf nrequired))
              (optional  (incf noptional))
-             (key       (push (parse-keyword-argument x) keywords)
+             (key       (push (parse-key-argument x) keywords)
                         (push x keyword-parameters))
              (rest      ()))))
       (values nrequired noptional keysp restp allow-other-keys-p
@@ -1333,15 +1338,15 @@ bootstrapping.
       (analyze-lambda-list lambda-list)
     (declare (ignore keyword-parameters))
     (let* ((old (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-ftype (if (sb-kernel:fun-type-p old) old nil))
+          (old-restp (and old-ftype (sb-kernel:fun-type-rest old-ftype)))
           (old-keys (and old-ftype
                          (mapcar #'sb-kernel:key-info-name
-                                 (sb-kernel:function-type-keywords
+                                 (sb-kernel:fun-type-keywords
                                   old-ftype))))
-          (old-keysp (and old-ftype (sb-kernel:function-type-keyp old-ftype)))
+          (old-keysp (and old-ftype (sb-kernel:fun-type-keyp old-ftype)))
           (old-allowp (and old-ftype
-                           (sb-kernel:function-type-allowp old-ftype)))
+                           (sb-kernel:fun-type-allowp old-ftype)))
           (keywords (union old-keys (mapcar #'keyword-spec-name keywords))))
       `(function ,(append (make-list nrequired :initial-element t)
                          (when (plusp noptional)
@@ -1360,32 +1365,31 @@ bootstrapping.
 
 (defun defgeneric-declaration (spec lambda-list)
   (when (consp spec)
-    (setq spec (get-setf-function-name (cadr spec))))
+    (setq spec (get-setf-fun-name (cadr spec))))
   `(ftype ,(ftype-declaration-from-lambda-list lambda-list spec) ,spec))
 \f
 ;;;; early generic function support
 
 (defvar *!early-generic-functions* ())
 
-(defun ensure-generic-function (function-name
+(defun ensure-generic-function (fun-name
                                &rest all-keys
                                &key environment
                                &allow-other-keys)
   (declare (ignore environment))
-  (let ((existing (and (gboundp function-name)
-                      (gdefinition function-name))))
+  (let ((existing (and (gboundp fun-name)
+                      (gdefinition fun-name))))
     (if (and existing
             (eq *boot-state* 'complete)
             (null (generic-function-p existing)))
-       (generic-clobbers-function function-name)
+       (generic-clobbers-function fun-name)
        (apply #'ensure-generic-function-using-class
-              existing function-name all-keys))))
+              existing fun-name all-keys))))
 
-(defun generic-clobbers-function (function-name)
-  (error 'sb-kernel:simple-program-error
-        :format-control
-        "~S already names an ordinary function or a macro."
-        :format-arguments (list function-name)))
+(defun generic-clobbers-function (fun-name)
+  (error 'simple-program-error
+        :format-control "~S already names an ordinary function or a macro."
+        :format-arguments (list fun-name)))
 
 (defvar *sgf-wrapper*
   (boot-make-wrapper (early-class-size 'standard-generic-function)
@@ -1425,16 +1429,17 @@ bootstrapping.
   (!bootstrap-slot-index 'standard-generic-function 'dfun-state))
 
 (defstruct (arg-info
-            (:conc-name nil)
-            (:constructor make-arg-info ()))
+           (:conc-name nil)
+           (:constructor make-arg-info ())
+           (:copier nil))
   (arg-info-lambda-list :no-lambda-list)
   arg-info-precedence
   arg-info-metatypes
   arg-info-number-optional
   arg-info-key/rest-p
-  arg-info-keywords ;nil       no keyword or rest allowed
-                   ;(k1 k2 ..) each method must accept these keyword arguments
-                   ;T    must have &key or &rest
+  arg-info-keys   ;nil        no &KEY or &REST allowed
+                 ;(k1 k2 ..) Each method must accept these &KEY arguments.
+                 ;T          must have &KEY or &REST
 
   gf-info-simple-accessor-type ; nil, reader, writer, boundp
   (gf-precompute-dfun-and-emf-p nil) ; set by set-arg-info
@@ -1502,7 +1507,7 @@ bootstrapping.
        (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-keywords arg-info)
+       (esetf (arg-info-keys arg-info)
               (if lambda-list-p
                   (if allow-other-keys-p t keywords)
                   (arg-info-key/rest-p arg-info)))))
@@ -1523,20 +1528,20 @@ bootstrapping.
              method
              gf
              (apply #'format nil string args)))
-          (compare (x y)
+          (comparison-description (x y)
             (if (> x y) "more" "fewer")))
       (let ((gf-nreq (arg-info-number-required arg-info))
            (gf-nopt (arg-info-number-optional arg-info))
            (gf-key/rest-p (arg-info-key/rest-p arg-info))
-           (gf-keywords (arg-info-keywords arg-info)))
+           (gf-keywords (arg-info-keys arg-info)))
        (unless (= nreq gf-nreq)
          (lose
           "the method has ~A required arguments than the generic function."
-          (compare nreq gf-nreq)))
+          (comparison-description nreq gf-nreq)))
        (unless (= nopt gf-nopt)
          (lose
-          "the method has ~S optional arguments than the generic function."
-          (compare nopt gf-nopt)))
+          "the method has ~A optional arguments than the generic function."
+          (comparison-description nopt gf-nopt)))
        (unless (eq (or keysp restp) gf-key/rest-p)
          (error
           "The method and generic function differ in whether they accept~%~
@@ -1545,7 +1550,7 @@ bootstrapping.
          (unless (or (and restp (not keysp))
                      allow-other-keys-p
                      (every #'(lambda (k) (memq k keywords)) gf-keywords))
-           (lose "the method does not accept each of the keyword arguments~%~
+           (lose "the method does not accept each of the &KEY arguments~%~
                   ~S."
                  gf-keywords)))))))
 
@@ -1649,7 +1654,7 @@ bootstrapping.
 
 (defun make-early-gf (spec &optional lambda-list lambda-list-p function)
   (let ((fin (allocate-funcallable-instance *sgf-wrapper* *sgf-slots-init*)))
-    (set-funcallable-instance-function
+    (set-funcallable-instance-fun
      fin
      (or function
         (if (eq spec 'print-object)
@@ -1666,7 +1671,7 @@ bootstrapping.
                         fin
                         'source
                         *load-truename*)
-    (set-function-name fin spec)
+    (set-fun-name fin spec)
     (let ((arg-info (make-arg-info)))
       (setf (early-gf-arg-info fin) arg-info)
       (when lambda-list-p
@@ -1746,11 +1751,15 @@ bootstrapping.
         (setf (getf ,all-keys :method-combination)
               (find-method-combination (class-prototype ,gf-class)
                                        (car combin)
-                                       (cdr combin)))))))
+                                       (cdr combin)))))
+    (let ((method-class (getf ,all-keys :method-class '.shes-not-there.)))
+      (unless (eq method-class '.shes-not-there.)
+        (setf (getf ,all-keys :method-class)
+                (find-class method-class t ,env))))))
 
 (defun real-ensure-gf-using-class--generic-function
        (existing
-       function-name
+       fun-name
        &rest all-keys
        &key environment (lambda-list nil lambda-list-p)
             (generic-function-class 'standard-generic-function gf-class-p)
@@ -1762,11 +1771,11 @@ bootstrapping.
   (prog1
       (apply #'reinitialize-instance existing all-keys)
     (when lambda-list-p
-      (proclaim (defgeneric-declaration function-name lambda-list)))))
+      (proclaim (defgeneric-declaration fun-name lambda-list)))))
 
 (defun real-ensure-gf-using-class--null
        (existing
-       function-name
+       fun-name
        &rest all-keys
        &key environment (lambda-list nil lambda-list-p)
             (generic-function-class 'standard-generic-function)
@@ -1774,11 +1783,11 @@ bootstrapping.
   (declare (ignore existing))
   (real-ensure-gf-internal generic-function-class all-keys environment)
   (prog1
-      (setf (gdefinition function-name)
+      (setf (gdefinition fun-name)
            (apply #'make-instance generic-function-class
-                  :name function-name all-keys))
+                  :name fun-name all-keys))
     (when lambda-list-p
-      (proclaim (defgeneric-declaration function-name lambda-list)))))
+      (proclaim (defgeneric-declaration fun-name lambda-list)))))
 \f
 (defun get-generic-function-info (gf)
   ;; values   nreq applyp metatypes nkeys arg-info
@@ -2023,7 +2032,7 @@ bootstrapping.
                                         (fn (fdefinition fn-name))
                                         (initargs
                                          (list :function
-                                               (set-function-name
+                                               (set-fun-name
                                                 #'(lambda (args next-methods)
                                                     (declare (ignore
                                                               next-methods))
@@ -2094,7 +2103,7 @@ bootstrapping.
              gf (method-generic-function method)
              temp (and gf (generic-function-name gf))
              name (if temp
-                      (intern-function-name
+                      (intern-fun-name
                         (make-method-spec temp
                                           (method-qualifiers method)
                                           (unparse-specializers
@@ -2112,9 +2121,9 @@ bootstrapping.
                 (and
                   (setq method (get-method gf quals specls errorp))
                   (setq name
-                        (intern-function-name (make-method-spec gf-spec
-                                                                quals
-                                                                specls))))))))
+                        (intern-fun-name (make-method-spec gf-spec
+                                                           quals
+                                                           specls))))))))
     (values gf method name)))
 \f
 (defun extract-parameters (specialized-lambda-list)
@@ -2205,7 +2214,7 @@ bootstrapping.
                `((declare (%variable-rebinding ,in ,instance)))))
        ,in
        (symbol-macrolet ,(mapcar #'(lambda (slot-entry)
-                                    (let ((variable-name
+                                    (let ((var-name
                                            (if (symbolp slot-entry)
                                                slot-entry
                                                (car slot-entry)))
@@ -2213,7 +2222,7 @@ bootstrapping.
                                            (if (symbolp slot-entry)
                                                slot-entry
                                                (cadr slot-entry))))
-                                      `(,variable-name
+                                      `(,var-name
                                          (slot-value ,in ',slot-name))))
                                 slots)
                        ,@body))))
@@ -2229,9 +2238,8 @@ bootstrapping.
                `((declare (%variable-rebinding ,in ,instance)))))
        ,in
        (symbol-macrolet ,(mapcar #'(lambda (slot-entry)
-                                  (let ((variable-name (car slot-entry))
+                                  (let ((var-name (car slot-entry))
                                         (accessor-name (cadr slot-entry)))
-                                    `(,variable-name
-                                       (,accessor-name ,in))))
+                                    `(,var-name (,accessor-name ,in))))
                               slots)
          ,@body))))