36 lines
973 B
Factor
36 lines
973 B
Factor
! Copyright (C) 2004, 2010 Slava Pestov.
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! See http://factorcode.org/license.txt for BSD license.
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USING: classes classes.algebra.private classes.private kernel
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kernel.private make namespaces sequences words ;
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IN: classes.builtin
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SYMBOL: builtins
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PREDICATE: builtin-class < class
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"metaclass" word-prop builtin-class eq? ;
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ERROR: not-a-builtin object ;
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: check-builtin ( class -- )
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dup builtin-class? [ drop ] [ not-a-builtin ] if ;
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: class>type ( class -- n ) "type" word-prop ; foldable
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: type>class ( n -- class ) builtins get-global nth ; foldable
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: bootstrap-type>class ( n -- class ) builtins get nth ;
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M: object class-of tag type>class ; inline
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M: builtin-class rank-class drop 0 ;
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M: builtin-class instance? [ tag ] [ class>type ] bi* eq? ;
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M: builtin-class (flatten-class) dup ,, ;
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M: builtin-class (classes-intersect?) eq? ;
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: full-cover ( -- ) builtins get [ (flatten-class) ] each ;
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M: anonymous-complement (flatten-class) drop full-cover ;
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