X-Git-Url: https://git.distorted.org.uk/~mdw/sod/blobdiff_plain/284f1fa2ace3e276052ff1bd7d66442500e693da..e046c3f65a8f7241889fb9b6005aac21e2aad1a8:/src/method-aggregate.lisp?ds=inline

diff --git a/src/method-aggregate.lisp b/src/method-aggregate.lisp
index ec0a119..eeea9df 100644
--- a/src/method-aggregate.lisp
+++ b/src/method-aggregate.lisp
@@ -133,7 +133,7 @@
       ;; Check that we've been given a method combination and make sure it
       ;; actually exists.
       (unless comb
-	(error "The `combination' property is required."))
+	(error "The `combination' property is required"))
       (unless (some (lambda (method)
 		      (let* ((specs (method-specializers method))
 			     (message-spec (car specs))
@@ -145,12 +145,12 @@
 				 comb))))
 		    (generic-function-methods
 		     #'compute-aggregating-message-kernel))
-	(error "Unknown method combination `~(~A~)'." comb))
+	(error "Unknown method combination `~(~A~)'" comb))
       (setf combination comb)
 
       ;; Make sure the ordering is actually valid.
       (unless (member most-specific '(:first :last))
-	(error "The `most_specific' property must be `first' or `last'."))
+	(error "The `most_specific' property must be `first' or `last'"))
 
       ;; Set up the function which will compute the kernel.
       (let ((magic (cons nil nil))
@@ -185,12 +185,8 @@
   (let ((wanted (aggregating-message-method-return-type
 		 message (sod-message-combination message)))
 	(msgtype (sod-message-type message)))
-    (unless (c-type-equal-p (c-type-subtype type) wanted)
-      (error "Method return type ~A doesn't match message ~A"
-	      (c-type-subtype msgtype) (c-type-subtype type)))
-    (unless (argument-lists-compatible-p (c-function-arguments msgtype)
-					 (c-function-arguments type))
-      (error "Method arguments ~A don't match message ~A" type msgtype))))
+    (check-method-return-type type wanted)
+    (check-method-argument-lists type msgtype)))
 
 ;;;--------------------------------------------------------------------------
 ;;; Utilities.
@@ -287,7 +283,7 @@
 		    (unless (c-type-equal-p (c-type-subtype ,type)
 					    ,want-type)
 		      (error "Messages with `~(~A~)' combination ~
-			      must return `~A'."
+			      must return `~A'"
 			     ,combvar ,want-type)))
 		  (call-next-method))))