23 lines
597 B
Factor
23 lines
597 B
Factor
! Copyright (C) 2007, 2008 Slava Pestov
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! See http://factorcode.org/license.txt for BSD license.
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USING: classes.tuple kernel assocs accessors ;
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IN: refs
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TUPLE: ref assoc key ;
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: >ref< [ key>> ] [ assoc>> ] bi ; inline
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: delete-ref ( ref -- ) >ref< delete-at ;
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GENERIC: get-ref ( ref -- obj )
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GENERIC: set-ref ( obj ref -- )
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TUPLE: key-ref < ref ;
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C: <key-ref> key-ref ( assoc key -- ref )
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M: key-ref get-ref key>> ;
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M: key-ref set-ref >ref< rename-at ;
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TUPLE: value-ref < ref ;
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C: <value-ref> value-ref ( assoc key -- ref )
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M: value-ref get-ref >ref< at ;
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M: value-ref set-ref >ref< set-at ;
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