X-Git-Url: https://git.distorted.org.uk/~mdw/sod/blobdiff_plain/6e92afa75860a55640efa6f3ba39f9624b41e8a8..f458e64e36509fa8c204f1dbcafff1d3dc059619:/src/class-make-proto.lisp

diff --git a/src/class-make-proto.lisp b/src/class-make-proto.lisp
index 0e3c5d7..2e1fe7c 100644
--- a/src/class-make-proto.lisp
+++ b/src/class-make-proto.lisp
@@ -28,6 +28,14 @@
 ;;;--------------------------------------------------------------------------
 ;;; Classes.
 
+(export 'guess-metaclass)
+(defgeneric guess-metaclass (class)
+  (:documentation
+   "Determine a suitable metaclass for the CLASS.
+
+   The default behaviour is to choose the most specific metaclass of any of
+   the direct superclasses of CLASS, or to signal an error if that failed."))
+
 (export 'make-sod-class)
 (defun make-sod-class (name superclasses pset &optional location)
   "Construct and return a new SOD class with the given NAME and SUPERCLASSES.