1.0.17.4: support for dynamic-extent structures

[sbcl.git] / src / pcl / slots.lisp

diff --git a/src/pcl/slots.lisp b/src/pcl/slots.lisp
index 2784334..b6282b9 100644 (file)
--- a/src/pcl/slots.lisp
+++ b/src/pcl/slots.lisp
@@ -97,7 +97,7 @@
 
 (declaim (ftype (sfunction (t symbol) t) slot-value))
 (defun slot-value (object slot-name)
-  (let* ((wrapper (check-obsolete-instance/wrapper-of object))
+  (let* ((wrapper (valid-wrapper-of object))
          (cell (find-slot-cell wrapper slot-name))
          (location (car cell))
          (value
@@ -107,13 +107,13 @@
                      (funcallable-standard-instance-access object location)))
                 ((consp location)
                  (cdr location))
-                ((eq t location)
-                 (return-from slot-value
-                   (slot-value-using-class (wrapper-class* wrapper) object (cddr cell))))
                 ((not cell)
                  (return-from slot-value
                    (values (slot-missing (wrapper-class* wrapper) object slot-name
                                          'slot-value))))
+                ((not location)
+                 (return-from slot-value
+                   (slot-value-using-class (wrapper-class* wrapper) object (cddr cell))))
                 (t
                  (bug "Bogus slot cell in SLOT-VALUE: ~S" cell)))))
     (if (eq +slot-unbound+ value)
@@ -128,7 +128,7 @@
       form))
 
 (defun set-slot-value (object slot-name new-value)
-  (let* ((wrapper (check-obsolete-instance/wrapper-of object))
+  (let* ((wrapper (valid-wrapper-of object))
          (cell (find-slot-cell wrapper slot-name))
          (location (car cell))
          (type-check-function (cadr cell)))
@@ -141,11 +141,11 @@
                      new-value)))
           ((consp location)
            (setf (cdr location) new-value))
-          ((eq t location)
-           (setf (slot-value-using-class (wrapper-class* wrapper) object (cddr cell))
-                 new-value))
           ((not cell)
            (slot-missing (wrapper-class* wrapper) object slot-name 'setf new-value))
+          ((not location)
+           (setf (slot-value-using-class (wrapper-class* wrapper) object (cddr cell))
+                 new-value))
           (t
            (bug "Bogus slot-cell in SET-SLOT-VALUE: ~S" cell))))
   new-value)
@@ -171,7 +171,7 @@
       form))
 
 (defun slot-boundp (object slot-name)
-  (let* ((wrapper (check-obsolete-instance/wrapper-of object))
+  (let* ((wrapper (valid-wrapper-of object))
          (cell (find-slot-cell wrapper slot-name))
          (location (car cell))
          (value
@@ -181,14 +181,14 @@
                      (funcallable-standard-instance-access object location)))
                 ((consp location)
                  (cdr location))
-                ((eq t location)
-                 (return-from slot-boundp
-                   (slot-boundp-using-class (wrapper-class* wrapper) object (cddr cell))))
                 ((not cell)
                  (return-from slot-boundp
                    (and (slot-missing (wrapper-class* wrapper) object slot-name
                                       'slot-boundp)
                         t)))
+                ((not location)
+                 (return-from slot-boundp
+                   (slot-boundp-using-class (wrapper-class* wrapper) object (cddr cell))))
                 (t
                  (bug "Bogus slot cell in SLOT-VALUE: ~S" cell)))))
     (not (eq +slot-unbound+ value))))
@@ -201,7 +201,7 @@
       form))
 
 (defun slot-makunbound (object slot-name)
-  (let* ((wrapper (check-obsolete-instance/wrapper-of object))
+  (let* ((wrapper (valid-wrapper-of object))
          (cell (find-slot-cell wrapper slot-name))
          (location (car cell)))
     (cond ((fixnump location)
@@ -211,10 +211,10 @@
                      +slot-unbound+)))
           ((consp location)
            (setf (cdr location) +slot-unbound+))
-          ((eq t location)
-           (slot-makunbound-using-class (wrapper-class* wrapper) object (cddr cell)))
           ((not cell)
            (slot-missing (wrapper-class* wrapper) object slot-name 'slot-makunbound))
+          ((not location)
+           (slot-makunbound-using-class (wrapper-class* wrapper) object (cddr cell)))
           (t
            (bug "Bogus slot-cell in SLOT-MAKUNBOUND: ~S" cell))))
   object)
@@ -465,3 +465,10 @@
   (declare (ignore initargs))
   (error "Cannot allocate an instance of ~S." class)) ; So sayeth AMOP
 
+;;; AMOP says that CLASS-SLOTS signals an error for unfinalized classes.
+(defmethod class-slots :before ((class slot-class))
+  (unless (class-finalized-p class)
+    (error 'simple-reference-error
+           :format-control "~S called on ~S, which is not yet finalized."
+           :format-arguments (list 'class-slots class)
+           :references (list '(:amop :generic-function class-slots)))))