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davidchambers/Match.purs

Created November 26, 2014 01:51
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Match.purs
findX :: (MatchObj -> Maybe MatchObj) -> [String] -> Maybe MatchObj
findX matcher words = head xs
where
xs = do len <- length words .. 1
idx <- 0 .. length words - len
let m = matcher { before: take idx words
, group: (drop idx >>> take len) words
, after: drop (idx + len) words
, matches: defaultTransaction
, context: []
}
guard $ isJust m
return $ fromJust m
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