0.8alpha.0.40:
[sbcl.git] / src / pcl / braid.lisp
index b2ed047..ca1b434 100644 (file)
@@ -65,9 +65,9 @@
                                              (slots-init nil slots-init-p))
   (let ((fin (%make-pcl-funcallable-instance nil nil
                                             (get-instance-hash-code))))
-    (set-funcallable-instance-fun
+    (set-funcallable-instance-function
      fin
-     #'(sb-kernel:instance-lambda (&rest args)
+     #'(instance-lambda (&rest args)
         (declare (ignore args))
         (error "The function of the funcallable-instance ~S has not been set."
                fin)))
         slot-class-wrapper slot-class
         built-in-class-wrapper built-in-class
         structure-class-wrapper structure-class
+        condition-class-wrapper condition-class
         standard-direct-slot-definition-wrapper
         standard-direct-slot-definition
         standard-effective-slot-definition-wrapper
         standard-generic-function-wrapper standard-generic-function)
     (!initial-classes-and-wrappers
      standard-class funcallable-standard-class
-     slot-class built-in-class structure-class std-class
+     slot-class built-in-class structure-class condition-class std-class
      standard-direct-slot-definition standard-effective-slot-definition
      class-eq-specializer standard-generic-function)
     ;; First, make a class metaobject for each of the early classes. For
                        (funcallable-standard-class
                         funcallable-standard-class-wrapper)
                        (built-in-class built-in-class-wrapper)
-                       (structure-class structure-class-wrapper)))
+                       (structure-class structure-class-wrapper)
+                       (condition-class condition-class-wrapper)))
             (class (or (find-class name nil)
-                       (allocate-standard-instance wrapper)))) 
+                       (allocate-standard-instance wrapper))))
        (setf (find-class name) class)))
     (dolist (definition *early-class-definitions*)
       (let ((name (ecd-class-name definition))
                                   built-in-class-wrapper)
                                  ((eq class structure-class)
                                   structure-class-wrapper)
+                                 ((eq class condition-class)
+                                  condition-class-wrapper)
                                  ((eq class class-eq-specializer)
                                   class-eq-specializer-wrapper)
                                  ((eq class standard-generic-function)
                 (!bootstrap-initialize-class
                  meta
                  class name class-eq-specializer-wrapper source
+                 direct-supers direct-subclasses cpl wrapper))
+               (condition-class
+                (!bootstrap-initialize-class
+                 meta
+                 class name class-eq-specializer-wrapper source
                  direct-supers direct-subclasses cpl wrapper))))))))
 
     (let* ((smc-class (find-class 'standard-method-combination))
        (metaclass-name class name
        class-eq-wrapper source direct-supers direct-subclasses cpl wrapper
        &optional
-       proto direct-slots slots direct-default-initargs default-initargs)
+       (proto nil proto-p)
+       direct-slots slots direct-default-initargs default-initargs)
   (flet ((classes (names) (mapcar #'find-class names))
         (set-slot (slot-name value)
           (!bootstrap-set-slot metaclass-name class slot-name value)))
     (set-slot 'name name)
+    (set-slot 'finalized-p t)
     (set-slot 'source source)
     (set-slot 'type (if (eq class (find-class t))
                        t
                ,@(and default-initargs
                       `(default-initargs ,default-initargs))))
     (when (memq metaclass-name '(standard-class funcallable-standard-class
-                                structure-class slot-class std-class))
+                                structure-class condition-class
+                                slot-class std-class))
       (set-slot 'direct-slots direct-slots)
       (set-slot 'slots slots)
       (set-slot 'initialize-info nil))
-    (if (eq metaclass-name 'structure-class)
-       (let ((constructor-sym '|STRUCTURE-OBJECT class constructor|))
-         (set-slot 'predicate-name (or (cadr (assoc name
-                                                    *early-class-predicates*))
-                                       (make-class-predicate-name name)))
-         (set-slot 'defstruct-form
-                   `(defstruct (structure-object (:constructor
-                                                  ,constructor-sym)
-                                                 (:copier nil))))
-         (set-slot 'defstruct-constructor constructor-sym)
-         (set-slot 'from-defclass-p t)
-         (set-slot 'plist nil)
-         (set-slot 'prototype (funcall constructor-sym)))
-       (set-slot 'prototype (or proto (allocate-standard-instance wrapper))))
+
+    ;; For all direct superclasses SUPER of CLASS, make sure CLASS is
+    ;; a direct subclass of SUPER.  Note that METACLASS-NAME doesn't
+    ;; matter here for the slot DIRECT-SUBCLASSES, since every class
+    ;; inherits the slot from class CLASS.
+    (dolist (super direct-supers)
+      (let* ((super (find-class super))
+            (subclasses (!bootstrap-get-slot metaclass-name super
+                                             'direct-subclasses)))
+       (cond ((eq +slot-unbound+ subclasses)
+              (!bootstrap-set-slot metaclass-name super 'direct-subclasses
+                                   (list class)))
+             ((not (memq class subclasses))
+              (!bootstrap-set-slot metaclass-name super 'direct-subclasses
+                                   (cons class subclasses))))))
+
+    (case metaclass-name
+      (structure-class
+       (let ((constructor-sym '|STRUCTURE-OBJECT class constructor|))
+        (set-slot 'predicate-name (or (cadr (assoc name
+                                                   *early-class-predicates*))
+                                      (make-class-predicate-name name)))
+        (set-slot 'defstruct-form
+                  `(defstruct (structure-object (:constructor
+                                                 ,constructor-sym)
+                                                (:copier nil))))
+        (set-slot 'defstruct-constructor constructor-sym)
+        (set-slot 'from-defclass-p t)
+        (set-slot 'plist nil)
+        (set-slot 'prototype (funcall constructor-sym))))
+      (condition-class
+       (set-slot 'prototype (make-condition name)))
+      (t
+       (set-slot 'prototype
+                (if proto-p proto (allocate-standard-instance wrapper)))))
     class))
 
 (defun !bootstrap-make-slot-definitions (name class slots wrapper effective-p)
                (!bootstrap-accessor-definitions1
                 'slot-object
                 slot-name
-                (list (slot-reader-symbol slot-name))
-                (list (slot-writer-symbol slot-name))
-                (list (slot-boundp-symbol slot-name)))))))))))
+                (list (slot-reader-name slot-name))
+                (list (slot-writer-name slot-name))
+                (list (slot-boundp-name slot-name)))))))))))
 
 (defun !bootstrap-accessor-definition (class-name accessor-name slot-name type)
   (multiple-value-bind (accessor-class make-method-function arglist specls doc)
     (dolist (e *built-in-classes*)
       (destructuring-bind (name supers subs cpl prototype) e
        (let* ((class (find-class name))
-              (lclass (cl:find-class name))
-              (wrapper (sb-kernel:class-layout lclass)))
+              (lclass (find-classoid name))
+              (wrapper (classoid-layout lclass)))
          (set (get-built-in-class-symbol name) class)
          (set (get-built-in-wrapper-symbol name) wrapper)
-         (setf (sb-kernel:class-pcl-class lclass) class)
+         (setf (classoid-pcl-class lclass) class)
 
          (!bootstrap-initialize-class 'built-in-class class
                                       name class-eq-wrapper nil
            (make-class-predicate class (class-predicate-name class))))))
 \f
 (defmacro wrapper-of-macro (x)
-  `(sb-kernel:layout-of ,x))
+  `(layout-of ,x))
 
 (defun class-of (x)
   (wrapper-class* (wrapper-of-macro x)))
 (defun wrapper-of (x)
   (wrapper-of-macro x))
 
-(defvar *find-structure-class* nil)
-
 (defun eval-form (form)
   (lambda () (eval form)))
 
-(defun slot-initargs-from-structure-slotd (slotd)
-  `(:name ,(structure-slotd-name slotd)
-    :defstruct-accessor-symbol ,(structure-slotd-accessor-symbol slotd)
-    :internal-reader-function ,(structure-slotd-reader-function slotd)
-    :internal-writer-function ,(structure-slotd-writer-function slotd)
-    :type ,(or (structure-slotd-type slotd) t)
-    :initform ,(structure-slotd-init-form slotd)
-    :initfunction ,(eval-form (structure-slotd-init-form slotd))))
-
-(defun find-structure-class (symbol)
-  (if (structure-type-p symbol)
-      (unless (eq *find-structure-class* symbol)
-       (let ((*find-structure-class* symbol))
-         (ensure-class symbol
-                       :metaclass 'structure-class
-                       :name symbol
-                       :direct-superclasses
-                        (mapcar #'cl:class-name
-                                (sb-kernel:class-direct-superclasses
-                                 (cl:find-class symbol)))
-                       :direct-slots
-                       (mapcar #'slot-initargs-from-structure-slotd
-                               (structure-type-slot-description-list
-                                symbol)))))
-      (error "~S is not a legal structure class name." symbol)))
+(defun ensure-non-standard-class (name &optional existing-class)
+  (flet
+      ((ensure (metaclass &optional (slots nil slotsp))
+        (let ((supers
+               (mapcar #'classoid-name (classoid-direct-superclasses
+                                        (find-classoid name)))))
+          (if slotsp
+              (ensure-class-using-class existing-class name
+                                        :metaclass metaclass :name name
+                                        :direct-superclasses supers
+                                        :direct-slots slots)
+              (ensure-class-using-class existing-class name
+                                        :metaclass metaclass :name name
+                                        :direct-superclasses supers))))
+       (slot-initargs-from-structure-slotd (slotd)
+        (let ((accessor (structure-slotd-accessor-symbol slotd)))
+          `(:name ,(structure-slotd-name slotd)
+            :defstruct-accessor-symbol ,accessor
+            ,@(when (fboundp accessor)
+                `(:internal-reader-function
+                  ,(structure-slotd-reader-function slotd)
+                  :internal-writer-function
+                  ,(structure-slotd-writer-function name slotd)))
+            :type ,(or (structure-slotd-type slotd) t)
+            :initform ,(structure-slotd-init-form slotd)
+            :initfunction ,(eval-form (structure-slotd-init-form slotd)))))
+       (slot-initargs-from-condition-slot (slot)
+        `(:name ,(condition-slot-name slot)
+          :initargs ,(condition-slot-initargs slot)
+          :readers ,(condition-slot-readers slot)
+          :writers ,(condition-slot-writers slot)
+          ,@(when (condition-slot-initform-p slot)
+              (let ((form-or-fun (condition-slot-initform slot)))
+                (if (functionp form-or-fun)
+                    `(:initfunction ,form-or-fun)
+                    `(:initform ,form-or-fun
+                      :initfunction ,(lambda () form-or-fun)))))
+          :allocation (condition-slot-allocation slot)
+          :documentation (condition-slot-documentation slot))))
+    (cond ((structure-type-p name)
+          (ensure 'structure-class
+                  (mapcar #'slot-initargs-from-structure-slotd
+                          (structure-type-slot-description-list name))))
+         ((condition-type-p name)
+          (ensure 'condition-class
+                  (mapcar #'slot-initargs-from-condition-slot
+                          (condition-classoid-slots (find-classoid name)))))
+         (t
+          (error "~@<~S is not the name of a class.~@:>" name)))))
+
+(defun maybe-reinitialize-structure-class (classoid)
+  (let ((class (classoid-pcl-class classoid)))
+    (when class
+      (ensure-non-standard-class (class-name class) class))))
+
+(pushnew 'maybe-reinitialize-structure-class sb-kernel::*defstruct-hooks*)
 \f
 (defun make-class-predicate (class name)
   (let* ((gf (ensure-generic-function name))
 ;;; Set the inherits from CPL, and register the layout. This actually
 ;;; installs the class in the Lisp type system.
 (defun update-lisp-class-layout (class layout)
-  (let ((lclass (sb-kernel:layout-class layout)))
-    (unless (eq (sb-kernel:class-layout lclass) layout)
-      (setf (sb-kernel:layout-inherits layout)
-              (sb-kernel:order-layout-inherits
+  (let ((lclass (layout-classoid layout)))
+    (unless (eq (classoid-layout lclass) layout)
+      (setf (layout-inherits layout)
+              (order-layout-inherits
                (map 'simple-vector #'class-wrapper
                     (reverse (rest (class-precedence-list class))))))
-      (sb-kernel:register-layout layout :invalidate t)
+      (register-layout layout :invalidate t)
 
       ;; Subclasses of formerly forward-referenced-class may be
       ;; unknown to CL:FIND-CLASS and also anonymous. This
       ;; functionality moved here from (SETF FIND-CLASS).
       (let ((name (class-name class)))
-       (setf (cl:find-class name) lclass
-             ;; FIXME: It's nasty to use double colons. Perhaps the
-             ;; best way to fix this is not to export CLASS-%NAME
-             ;; from SB-KERNEL, but instead to move the whole
-             ;; UPDATE-LISP-CLASS-LAYOUT function to SB-KERNEL, and
-             ;; export it. (since it's also nasty for us to be
-             ;; reaching into %KERNEL implementation details my
-             ;; messing with raw CLASS-%NAME)
-             (sb-kernel::class-%name lclass) name)))))
+       (setf (find-classoid name) lclass
+             (classoid-name lclass) name)))))
+
+(defun set-class-type-translation (class name)
+  (let ((classoid (find-classoid name nil)))
+    (etypecase classoid
+      (null)
+      (built-in-classoid
+       (let ((translation (built-in-classoid-translation classoid)))
+        (cond
+          (translation
+           (aver (ctype-p translation))
+           (setf (info :type :translator class)
+                 (lambda (spec) (declare (ignore spec)) translation)))
+          (t
+           (setf (info :type :translator class)
+                 (lambda (spec) (declare (ignore spec)) classoid))))))
+      (classoid
+       (setf (info :type :translator class)
+            (lambda (spec) (declare (ignore spec)) classoid))))))
 
 (clrhash *find-class*)
 (!bootstrap-meta-braid)
 (dohash (name x *find-class*)
        (let* ((class (find-class-from-cell name x))
               (layout (class-wrapper class))
-              (lclass (sb-kernel:layout-class layout))
-              (lclass-pcl-class (sb-kernel:class-pcl-class lclass))
-              (olclass (cl:find-class name nil)))
+              (lclass (layout-classoid layout))
+              (lclass-pcl-class (classoid-pcl-class lclass))
+              (olclass (find-classoid name nil)))
          (if lclass-pcl-class
              (aver (eq class lclass-pcl-class))
-             (setf (sb-kernel:class-pcl-class lclass) class))
+             (setf (classoid-pcl-class lclass) class))
 
          (update-lisp-class-layout class layout)
 
          (cond (olclass
                 (aver (eq lclass olclass)))
                (t
-                (setf (cl:find-class name) lclass)))))
+                (setf (find-classoid name) lclass)))
+
+         (set-class-type-translation class name)))
 
 (setq *boot-state* 'braid)
 
         generic-function
         method
         args))
+
+;;; An extension to the ANSI standard: in the presence of e.g. a
+;;; :BEFORE method, it would seem that going through
+;;; NO-APPLICABLE-METHOD is prohibited, as in fact there is an
+;;; applicable method.  -- CSR, 2002-11-15
+(defmethod no-primary-method (generic-function &rest args)
+  (error "~@<There is no primary method for the generic function ~2I~_~S~
+         ~I~_when called with arguments ~2I~_~S.~:>"
+        generic-function
+        args))