31 lines
1.0 KiB
Haskell
31 lines
1.0 KiB
Haskell
module Language.Haskell.GhcMod.Lint where
|
|
|
|
import Exception (ghandle)
|
|
import Control.Exception (SomeException(..))
|
|
import Language.Haskell.GhcMod.Logger (checkErrorPrefix)
|
|
import Language.Haskell.GhcMod.Convert
|
|
import Language.Haskell.GhcMod.Monad
|
|
import Language.Haskell.HLint (hlint)
|
|
|
|
import Language.Haskell.GhcMod.Utils (withMappedFile)
|
|
|
|
import Data.List (stripPrefix)
|
|
|
|
data LintOpts = LintOpts { optLintHlintOpts :: [String] }
|
|
|
|
-- | Checking syntax of a target file using hlint.
|
|
-- Warnings and errors are returned.
|
|
lint :: IOish m
|
|
=> LintOpts
|
|
-> FilePath -- ^ A target file.
|
|
-> GhcModT m String
|
|
lint opt file =
|
|
withMappedFile file $ \tempfile ->
|
|
liftIO (hlint $ tempfile : "--quiet" : optLintHlintOpts opt)
|
|
>>= mapM (replaceFileName tempfile)
|
|
>>= ghandle handler . pack
|
|
where
|
|
pack = convert' . map init -- init drops the last \n.
|
|
handler (SomeException e) = return $ checkErrorPrefix ++ show e ++ "\n"
|
|
replaceFileName fp s = return $ maybe (show s) (file++) $ stripPrefix fp (show s)
|