0.8.3.74:

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

diff --git a/src/pcl/braid.lisp b/src/pcl/braid.lisp
index ed010f8..82f1563 100644 (file)
--- a/src/pcl/braid.lisp
+++ b/src/pcl/braid.lisp
@@ -194,7 +194,8 @@
                   class)
              (dolist (slot slots)
                (unless (eq (getf slot :allocation :instance) :instance)
-                 (error "Slot allocation ~S is not supported in bootstrap.")))
+                 (error "Slot allocation ~S is not supported in bootstrap."
+                        (getf slot :allocation))))
 
              (when (typep wrapper 'wrapper)
                (setf (wrapper-instance-slots-layout wrapper)
@@ -697,7 +698,7 @@
 (setq *boot-state* 'braid)
 
 (defmethod no-applicable-method (generic-function &rest args)
-  (error "~@<There is no matching method for the generic function ~2I~_~S~
+  (error "~@<There is no applicable method for the generic function ~2I~_~S~
          ~I~_when called with arguments ~2I~_~S.~:>"
         generic-function
         args))
@@ -719,3 +720,20 @@
          ~I~_when called with arguments ~2I~_~S.~:>"
         generic-function
         args))
+
+(defmethod invalid-qualifiers ((gf generic-function)
+                              combin
+                              method)
+  (let ((qualifiers (method-qualifiers method)))
+    (let ((why (cond
+                ((cdr qualifiers) "has too many qualifiers")
+                (t (aver (not (member (car qualifiers)
+                                      '(:around :before :after))))
+                   "has an invalid qualifier"))))
+      (invalid-method-error
+       method
+       "The method ~S on ~S ~A.~%~
+        Standard method combination requires all methods to have one~%~
+        of the single qualifiers :AROUND, :BEFORE and :AFTER or to~%~
+        have no qualifier at all."
+       method gf why))))