1 ! (c)2010 Joe Groff bsd license
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2 USING: accessors assocs hashtables hashtables.wrapped kernel
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3 parser vocabs.loader ;
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4 IN: hashtables.identity
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6 TUPLE: identity-wrapper < wrapped-key identity-hashcode ;
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8 : <identity-wrapper> ( wrapped-key -- identity-wrapper )
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9 dup identity-hashcode identity-wrapper boa ; inline
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11 M: identity-wrapper equal?
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12 over identity-wrapper?
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13 [ [ underlying>> ] bi@ eq? ]
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14 [ 2drop f ] if ; inline
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16 M: identity-wrapper hashcode* nip identity-hashcode>> ; inline
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18 TUPLE: identity-hashtable < wrapped-hashtable ;
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20 : <identity-hashtable> ( n -- ihashtable )
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21 <hashtable> identity-hashtable boa ; inline
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23 M: identity-hashtable wrap-key drop <identity-wrapper> ;
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25 M: identity-hashtable clone
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26 underlying>> clone identity-hashtable boa ; inline
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28 : identity-associate ( value key -- ihashtable )
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29 2 <identity-hashtable> [ set-at ] keep ; inline
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31 : >identity-hashtable ( assoc -- ihashtable )
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32 [ assoc-size <identity-hashtable> ] keep assoc-union! ;
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34 M: identity-hashtable assoc-like
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35 drop dup identity-hashtable? [ >identity-hashtable ] unless ; inline
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37 M: identity-hashtable new-assoc drop <identity-hashtable> ;
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39 SYNTAX: IH{ \ } [ >identity-hashtable ] parse-literal ;
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41 { "hashtables.identity" "prettyprint" } "hashtables.identity.prettyprint" require-when
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42 { "hashtables.identity" "mirrors" } "hashtables.identity.mirrors" require-when
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