26 lines
687 B
Factor
26 lines
687 B
Factor
! Copyright (C) 2009 Slava Pestov.
|
|
! See http://factorcode.org/license.txt for BSD license.
|
|
USING: kernel namespaces assocs accessors words sequences classes.tuple ;
|
|
IN: smalltalk.classes
|
|
|
|
SYMBOL: classes
|
|
|
|
classes [ H{ } clone ] initialize
|
|
|
|
: create-class ( class -- class )
|
|
"smalltalk.classes" create-word ;
|
|
|
|
ERROR: no-class name ;
|
|
|
|
: lookup-class ( class -- class )
|
|
classes get ?at [ no-class ] unless ;
|
|
|
|
: define-class ( class superclass ivars -- class-word )
|
|
[ create-class ] [ lookup-class ] [ ] tri*
|
|
[ define-tuple-class ] [ 2drop dup dup name>> classes get set-at ] 3bi ;
|
|
|
|
: define-foreign ( class name -- )
|
|
classes get set-at ;
|
|
|
|
tuple "Object" define-foreign
|