factor/library/generic/object.factor

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! Copyright (C) 2004, 2005 Slava Pestov.
! See http://factor.sf.net/license.txt for BSD license.
IN: generic
USING: kernel lists math sequences vectors words ;
! Catch-all metaclass for providing a default method.
SYMBOL: object
object [
drop num-types count
] "builtin-supertypes" set-word-prop
object [
( generic vtable definition class -- )
drop over length [
3dup rot set-nth
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] repeat 3drop
] "add-method" set-word-prop
object [ drop t ] "predicate" set-word-prop
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object 100 "priority" set-word-prop
object [ 2drop t ] "class<" set-word-prop
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object object define-class