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Add a function computing the ranges of non-whitespace substrings within a string.

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This commit is contained in:
Rob Rix 2015-12-14 12:08:33 -05:00
parent 75d76afeb5
commit 0944591fab
1 changed files with 10 additions and 0 deletions
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10
app/Main.hs
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@ -11,6 +11,7 @@ import Term
import TreeSitter import TreeSitter
import Unified import Unified
import Control.Comonad.Cofree import Control.Comonad.Cofree
import qualified Data.Char as Char
import qualified Data.Map as Map import qualified Data.Map as Map
import qualified Data.ByteString.Char8 as B1 import qualified Data.ByteString.Char8 as B1
import qualified Data.ByteString.Lazy as B2 import qualified Data.ByteString.Lazy as B2
@ -59,3 +60,12 @@ parserForType mediaType = maybe P.lineByLineParser parseTreeSitterFile $ case me
".c" -> Just ts_language_c ".c" -> Just ts_language_c
".js" -> Just ts_language_javascript ".js" -> Just ts_language_javascript
_ -> Nothing _ -> Nothing
rangesOfWordsFrom :: Int -> String -> [Range]
rangesOfWordsFrom startIndex string = case break Char.isSpace string of
([], []) -> []
([], rest) -> rangesOfWordsAfterWhitespace startIndex rest
(word, []) -> [ Range startIndex $ length word ]
(word, rest) -> (Range startIndex $ length word) : rangesOfWordsAfterWhitespace (startIndex + length word) rest
where
rangesOfWordsAfterWhitespace startIndex string | (whitespace, rest) <- break (not . Char.isSpace) string = rangesOfWordsFrom (startIndex + length whitespace) rest