1 ! Copyright (C) 2004, 2010 Slava Pestov.
2 ! See http://factorcode.org/license.txt for BSD license.
3 USING: classes classes.algebra.private classes.private kernel
4 kernel.private make namespaces sequences words ;
9 PREDICATE: builtin-class < class
10 "metaclass" word-prop builtin-class eq? ;
12 : class>type ( class -- n ) "type" word-prop ; foldable
14 : type>class ( n -- class ) builtins get-global nth ; foldable
16 : bootstrap-type>class ( n -- class ) builtins get nth ;
18 M: object class-of tag type>class ; inline
20 M: builtin-class rank-class drop 0 ;
22 M: builtin-class instance? [ tag ] [ class>type ] bi* eq? ;
24 M: builtin-class (flatten-class) dup ,, ;
26 M: builtin-class (classes-intersect?) eq? ;
28 : full-cover ( -- ) builtins get [ (flatten-class) ] each ;
30 M: anonymous-complement (flatten-class) drop full-cover ;