factor/core/generic/hook/hook.factor

22 lines
615 B
Factor

! Copyright (C) 2009 Slava Pestov.
! See http://factorcode.org/license.txt for BSD license.
USING: accessors definitions generic generic.single kernel
namespaces words ;
IN: generic.hook
TUPLE: hook-combination < single-combination var ;
C: <hook-combination> hook-combination
PREDICATE: hook-generic < generic
"combination" word-prop hook-combination? ;
M: hook-combination picker
combination get var>> [ get ] curry ;
M: hook-combination dispatch# drop 0 ;
M: hook-generic definer drop \ HOOK: f ;
M: hook-generic effective-method
[ "combination" word-prop var>> get ] keep (effective-method) ;