48 lines
1.1 KiB
Factor
48 lines
1.1 KiB
Factor
! Copyright (C) 2011 John Benediktsson
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! See http://factorcode.org/license.txt for BSD license
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USING: accessors arrays assocs hashtables kernel sequences
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vocabs.loader ;
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IN: hashtables.wrapped
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TUPLE: wrapped-key
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{ underlying read-only } ;
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TUPLE: wrapped-hashtable
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{ underlying hashtable read-only } ;
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GENERIC: wrap-key ( key wrapped-hash -- wrapped-key )
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<PRIVATE
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: wrapper@ ( key wrapped-hash -- wrapped-key hash )
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[ wrap-key ] [ nip underlying>> ] 2bi ; inline
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PRIVATE>
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M: wrapped-hashtable at*
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wrapper@ at* ; inline
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M: wrapped-hashtable clear-assoc
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underlying>> clear-assoc ; inline
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M: wrapped-hashtable delete-at
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wrapper@ delete-at ; inline
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M: wrapped-hashtable assoc-size
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underlying>> assoc-size ; inline
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M: wrapped-hashtable set-at
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wrapper@ set-at ; inline
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M: wrapped-hashtable >alist
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underlying>> >alist [ [ first underlying>> ] [ second ] bi 2array ] map ;
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M: wrapped-hashtable equal?
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over wrapped-hashtable? [ [ underlying>> ] same? ] [ 2drop f ] if ;
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INSTANCE: wrapped-hashtable assoc
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{ "hashtables.wrapped" "prettyprint" } "hashtables.wrapped.prettyprint" require-when
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