X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fpcl%2Finit.lisp;h=5b6d913adda85a230046c0794f360557f4d116da;hb=171fde84561e232b8af8c05b82dfe8a8f9e08340;hp=27342bd9e0e303b989c0d97d639717c44b3b0b93;hpb=ab7aedfb1e4c0245814beb998e74e099b71092a6;p=sbcl.git

diff --git a/src/pcl/init.lisp b/src/pcl/init.lisp
index 27342bd..5b6d913 100644
--- a/src/pcl/init.lisp
+++ b/src/pcl/init.lisp
@@ -29,6 +29,9 @@
   (apply #'make-instance (find-class class) initargs))
 
 (defmethod make-instance ((class class) &rest initargs)
+  (let ((instance-or-nil (maybe-call-ctor class initargs)))
+    (when instance-or-nil
+      (return-from make-instance instance-or-nil)))
   (unless (class-finalized-p class) (finalize-inheritance class))
   (let ((class-default-initargs (class-default-initargs class)))
     (when class-default-initargs
@@ -57,6 +60,38 @@
   (apply #'shared-initialize instance nil initargs)
   instance)
 
+(defglobal **typecheck-cache** (make-hash-table :test #'equal))
+
+(defun generate-slotd-typecheck (slotd)
+  (let ((type (slot-definition-type slotd)))
+    (values
+     (when (and (neq t type) (safe-p (slot-definition-class slotd)))
+       (with-locked-system-table (**typecheck-cache**)
+         (or (gethash type **typecheck-cache**)
+             (setf (gethash type **typecheck-cache**)
+                   (handler-bind (((or style-warning compiler-note)
+                                   #'muffle-warning))
+                     (funcall (compile
+                               nil
+                               `(lambda ()
+                                  (declare (optimize (sb-c:store-coverage-data 0)
+                                                     (sb-c::type-check 3)
+                                                     (sb-c::verify-arg-count 0)))
+                                  (named-lambda (slot-typecheck ,type) (value)
+                                    (the ,type value))))))))))
+     type)))
+
+(defmethod initialize-instance :after ((slotd effective-slot-definition) &key)
+  (setf (slot-definition-info slotd)
+        (multiple-value-bind (typecheck type) (generate-slotd-typecheck slotd)
+          (make-slot-info :slotd slotd
+                          :typecheck typecheck))))
+
+;;; FIXME: Do we need (SETF SLOT-DEFINITION-TYPE) at all?
+(defmethod (setf slot-definition-type) :after (new-type (slotd effective-slot-definition))
+  (multiple-value-bind (typecheck type) (generate-slotd-typecheck slotd)
+    (setf (slot-info-typecheck (slot-definition-info slotd)) typecheck)))
+
 (defmethod update-instance-for-different-class
     ((previous standard-object) (current standard-object) &rest initargs)
   ;; First we must compute the newly added slots. The spec defines