54 lines
2.6 KiB
Factor
54 lines
2.6 KiB
Factor
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USING: help.markup help.syntax strings generic vectors assocs
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math ;
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IN: tools.completion
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ARTICLE: "tools.completion" "Fuzzy completion"
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"Various developer tools make use of a general-purpose fuzzy completion algorithm."
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$nl
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"The main entry point:"
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{ $subsection completions }
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"The words used to implement the algorithm can be called as well, for finer control over fuzzy matching:"
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{ $subsection fuzzy }
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{ $subsection runs }
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{ $subsection score }
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{ $subsection complete }
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{ $subsection rank-completions } ;
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ABOUT: "tools.completion"
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HELP: fuzzy
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{ $values { "full" string } { "short" string } { "indices" vector } }
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{ $description "If " { $snippet "short" } " can be obtained from " { $snippet "full" } " by removing subsequences, then outputs the index of every character from " { $snippet "short" } " in " { $snippet "full" } ", otherwise outputs " { $link f } "." } ;
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HELP: runs
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{ $values { "seq" "a sequence of integers" } { "newseq" "a sequence of sequences of integers" } }
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{ $description "Groups subsequences of consecutive integers." }
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{ $examples
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{ $example "USE: tools.completion" "{ 1 2 3 5 6 9 10 } runs ." "V{ V{ 1 2 3 } V{ 5 6 } V{ 9 10 } }" }
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} ;
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HELP: score
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{ $values { "full" string } { "fuzzy" "a sequence of sequences of integers" } { "n" integer } }
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{ $description "Ranks " { $snippet "fuzzy" } " by how closely it approximates the sequence " { $snippet "{ { 0 ... n-1 } }" } " where " { $snippet "n" } " is the length of " { $snippet "full" } "." } ;
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HELP: rank-completions
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{ $values { "results" "an alist" } { "newresults" "an alist" } }
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{ $description "Sorts " { $snippet "results" } " by the first element of each pair, and discards the low 33% of the results." } ;
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HELP: complete
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{ $values { "full" string } { "short" string } { "score" "a rational number between 0 and 1" } }
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{ $description "Ranks how close " { $snippet "short" } " is to " { $snippet "full" } " by edit distance." } ;
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HELP: completion
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{ $values { "short" string } { "candidate" "a pair " { $snippet "{ obj full }" } } { "result" "a pair " { $snippet "{ score obj }" } } }
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{ $description "Outputs a pair of two elements:"
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{ $list
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{ "how close " { $snippet "short" } " is to " { $snippet "full" } " by edit distance" }
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{ "the original value of " { $snippet "obj" } }
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}
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} ;
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HELP: completions
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{ $values { "short" string } { "candidates" "a sequence of pairs of the shape " { $snippet "{ obj full }" } } { "seq" "a sequence of pairs of the shape " { $snippet "{ score obj }" } } }
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{ $description "Calls " { $link completion } " to produce a sequence of " { $snippet "{ score obj }" } " pairs, then calls " { $link rank-completions } " to sort them and discard the low 33%." } ;
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