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Import Data.Text qualified in dhall-lsp-server #2636

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Jan 30, 2025
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Import Data.Text qualified in dhall-lsp-server #2636

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12 changes: 7 additions & 5 deletions dhall-lsp-server/src/Dhall/LSP/Util.hs
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Original file line number Diff line number Diff line change
Expand Up @@ -7,26 +7,28 @@ module Dhall.LSP.Util (
unlines'
) where

import Data.List.NonEmpty
import Data.Text
import Data.List.NonEmpty (NonEmpty (..))
import Data.Text (Text)

import qualified Data.Text as Text

-- | Shorthand for @pack . show@. Useful since we are mostly working with Text
-- rather than String.
tshow :: Show a => a -> Text
tshow = pack . show
tshow = Text.pack . show

-- | A variant of @Data.Text.lines@ that does not swallow the last empty. Always
-- returns at least the empty line!
lines' :: Text -> NonEmpty Text
lines' text =
case split (== '\n') text of
case Text.split (== '\n') text of
[] -> "" :| [] -- this case never occurs!
l : ls -> l :| ls

-- | A variant of @Data.Text.unlines@ that is the exact inverse to @lines'@ (and
-- vice-versa).
unlines' :: [Text] -> Text
unlines' = intercalate "\n"
unlines' = Text.intercalate "\n"

rightToMaybe :: Either a b -> Maybe b
rightToMaybe (Right b) = Just b
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