79 lines
2.0 KiB
Factor
Executable File
79 lines
2.0 KiB
Factor
Executable File
! Copyright (C) 2005, 2008 Slava Pestov.
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! See http://factorcode.org/license.txt for BSD license.
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IN: tools.completion
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USING: kernel arrays sequences math namespaces strings io
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vectors words assocs combinators sorting unicode.case
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unicode.categories ;
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: (fuzzy) ( accum ch i full -- accum i ? )
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index*
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[
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[ swap push ] 2keep 1+ t
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] [
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drop f -1 f
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] if* ;
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: fuzzy ( full short -- indices )
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dup length <vector> -rot 0 -rot
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[ -rot [ (fuzzy) ] keep swap ] all? 3drop ;
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: (runs) ( runs n seq -- runs n )
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[
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[
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2dup number=
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[ drop ] [ nip V{ } clone pick push ] if
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1+
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] keep pick peek push
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] each ;
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: runs ( seq -- newseq )
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V{ V{ } } [ clone ] map over first rot (runs) drop ;
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: score-1 ( i full -- n )
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{
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{ [ over zero? ] [ 2drop 10 ] }
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{ [ 2dup length 1- number= ] [ 2drop 4 ] }
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{ [ 2dup >r 1- r> nth Letter? not ] [ 2drop 10 ] }
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{ [ 2dup >r 1+ r> nth Letter? not ] [ 2drop 4 ] }
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[ 2drop 1 ]
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} cond ;
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: score ( full fuzzy -- n )
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dup [
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[ [ length ] bi@ - 15 swap [-] 3 /f ] 2keep
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runs [
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[ 0 [ pick score-1 max ] reduce nip ] keep
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length * +
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] with each
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] [
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2drop 0
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] if ;
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: rank-completions ( results -- newresults )
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sort-keys <reversed>
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[ 0 [ first max ] reduce 3 /f ] keep
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[ first < ] with subset
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[ second ] map ;
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: complete ( full short -- score )
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[ dupd fuzzy score ] 2keep
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[ <reversed> ] bi@
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dupd fuzzy score max ;
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: completion ( short candidate -- result )
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[ second >lower swap complete ] keep first 2array ;
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: completions ( short candidates -- seq )
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over empty? [
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nip [ first ] map
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] [
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>r >lower r> [ completion ] with map
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rank-completions
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] if ;
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: string-completions ( short strs -- seq )
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[ dup ] { } map>assoc completions ;
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: limited-completions ( short candidates -- seq )
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completions dup length 1000 > [ drop f ] when ;
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