ghc-mod/Language/Haskell/GhcMod/Check.hs
2014-08-15 09:32:28 +02:00

70 lines
2.3 KiB
Haskell

module Language.Haskell.GhcMod.Check (
checkSyntax
, check
, expandTemplate
, expand
) where
import Control.Applicative ((<$>))
import Language.Haskell.GhcMod.DynFlags
import qualified Language.Haskell.GhcMod.Gap as Gap
import qualified GHC as G
import Language.Haskell.GhcMod.Logger
import Language.Haskell.GhcMod.Monad (IOish, GhcModT, withErrorHandler
, overrideGhcUserOptions)
import Language.Haskell.GhcMod.Target (setTargetFiles)
----------------------------------------------------------------
-- | Checking syntax of a target file using GHC.
-- Warnings and errors are returned.
checkSyntax :: IOish m
=> [FilePath] -- ^ The target files.
-> GhcModT m String
checkSyntax [] = return ""
checkSyntax files = withErrorHandler sessionName $
either id id <$> check files
where
sessionName = case files of
[file] -> file
_ -> "MultipleFiles"
----------------------------------------------------------------
-- | Checking syntax of a target file using GHC.
-- Warnings and errors are returned.
check :: IOish m
=> [FilePath] -- ^ The target files.
-> GhcModT m (Either String String)
check fileNames = overrideGhcUserOptions $ \ghcOpts -> do
withLoggerTwice
setAllWaringFlags
(do _ <- G.setSessionDynFlags =<< addCmdOpts ghcOpts =<< G.getSessionDynFlags
setTargetFiles fileNames)
(setAllWaringFlags . setNoMaxRelevantBindings . Gap.setWarnTypedHoles . Gap.setDeferTypeErrors)
(do _ <- G.setSessionDynFlags =<< addCmdOpts ghcOpts =<< G.getSessionDynFlags
setTargetFiles fileNames)
----------------------------------------------------------------
-- | Expanding Haskell Template.
expandTemplate :: IOish m
=> [FilePath] -- ^ The target files.
-> GhcModT m String
expandTemplate [] = return ""
expandTemplate files = withErrorHandler sessionName $
either id id <$> expand files
where
sessionName = case files of
[file] -> file
_ -> "MultipleFiles"
----------------------------------------------------------------
-- | Expanding Haskell Template.
expand :: IOish m
=> [FilePath] -- ^ The target files.
-> GhcModT m (Either String String)
expand fileNames = withLogger (Gap.setDumpSplices . setNoWaringFlags) $
setTargetFiles fileNames