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Test whether the last element in a Line is open.

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This commit is contained in:
Rob Rix 2015-12-10 15:34:11 -05:00
parent c2f54ce8d8
commit 200037b509
1 changed files with 2 additions and 4 deletions
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6
src/Split.hs
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@ -8,6 +8,7 @@ import Syntax
import Control.Comonad.Cofree
import Range
import Control.Monad
import Control.Monad.Free
import Data.ByteString.Lazy.Internal
import Text.Blaze.Html5 hiding (map)
@ -238,10 +239,7 @@ openElement h = Just h
openLine :: [Line] -> Maybe Line
openLine [] = Nothing
openLine (EmptyLine : rest) = openLine rest
openLine (line : _) = case maybeLast $ unLine line of
Just Break -> Nothing
Just _ -> Just line
Nothing -> Nothing
openLine (line : _) = const line <$> (join . maybeLast $ openElement <$> unLine line)
adjoin2Lines :: [Line] -> Line -> [Line]
adjoin2Lines [] line = [line]