diff options
Diffstat (limited to 'lib/Language/Haskell/Stylish/Config.hs')
| -rw-r--r-- | lib/Language/Haskell/Stylish/Config.hs | 100 |
1 files changed, 14 insertions, 86 deletions
diff --git a/lib/Language/Haskell/Stylish/Config.hs b/lib/Language/Haskell/Stylish/Config.hs index b7ada3b..8f43131 100644 --- a/lib/Language/Haskell/Stylish/Config.hs +++ b/lib/Language/Haskell/Stylish/Config.hs @@ -16,33 +16,23 @@ import Data.Aeson (FromJSON (..) import qualified Data.Aeson as A import qualified Data.Aeson.Types as A import qualified Data.ByteString as B -import Data.Either (isRight) import qualified Data.FileEmbed as FileEmbed -import Data.List (concatMap, - inits, - intercalate, +import Data.List (intercalate, nub) import Data.Map (Map) import qualified Data.Map as M -import Data.Maybe (fromMaybe, - maybeToList) +import Data.Maybe (fromMaybe) import Data.Yaml (decodeEither', prettyPrintParseException) -import qualified Distribution.PackageDescription as Cabal -import qualified Distribution.PackageDescription.Parsec as Cabal -import qualified Distribution.Simple.Utils as Cabal -import qualified Distribution.Types.CondTree as Cabal -import qualified Distribution.Verbosity as Cabal -import qualified Language.Haskell.Extension as Language import System.Directory -import System.FilePath (joinPath, - splitPath, - (</>)) +import System.FilePath ((</>)) import qualified System.IO as IO (Newline (..), nativeNewline) -------------------------------------------------------------------------------- +import qualified Language.Haskell.Stylish.Config.Cabal as Cabal +import Language.Haskell.Stylish.Config.Internal import Language.Haskell.Stylish.Step import qualified Language.Haskell.Stylish.Step.Imports as Imports import qualified Language.Haskell.Stylish.Step.LanguagePragmas as LanguagePragmas @@ -64,6 +54,7 @@ data Config = Config , configColumns :: Int , configLanguageExtensions :: [String] , configNewline :: IO.Newline + , configCabal :: Bool } @@ -95,10 +86,6 @@ configFilePath verbose Nothing = do return mbConfig --- All ancestors of a dir (including that dir) -ancestors :: FilePath -> [FilePath] -ancestors = init . map joinPath . reverse . inits . splitPath - search :: Verbose -> [FilePath] -> IO (Maybe FilePath) search _ [] = return Nothing search verbose (f : fs) = do @@ -117,75 +104,15 @@ loadConfig verbose userSpecified = do Left err -> error $ "Language.Haskell.Stylish.Config.loadConfig: " ++ prettyPrintParseException err Right config -> do - mbCabalFile <- cabalFilePath verbose - exsFromCabal <- case mbCabalFile of - Just cabalFile -> map show <$> - readDefaultLanguageExtensions verbose cabalFile - Nothing -> return [] - let exsFromConfig = configLanguageExtensions config - return $ config {configLanguageExtensions = nub (exsFromConfig <> exsFromCabal)} + cabalLanguageExtensions <- if configCabal config + then map show <$> Cabal.findLanguageExtensions verbose + else pure [] --------------------------------------------------------------------------------- --- | Find the closest .cabal file, possibly going up the directory structure. --- It's essential that -cabalFilePath :: Verbose -> IO (Maybe FilePath) -cabalFilePath verbose = do - potentialProjectRoots <- ancestors <$> getCurrentDirectory - potentialCabalFile <- filter isRight <$> - traverse Cabal.findPackageDesc potentialProjectRoots - case potentialCabalFile of - [Right cabalFile] -> return (Just cabalFile) - _ -> do - verbose $ ".cabal file not found, directories searched: " <> - show potentialProjectRoots - verbose $ "Stylish Haskell will work basing on LANGUAGE pragmas in source files." - return Nothing + return $ config + { configLanguageExtensions = nub $ + configLanguageExtensions config ++ cabalLanguageExtensions + } --------------------------------------------------------------------------------- --- | Extract @default-extensions@ fields from a @.cabal@ file -readDefaultLanguageExtensions :: Verbose -> FilePath -> IO [Language.KnownExtension] -readDefaultLanguageExtensions verbose cabalFile = do - verbose $ "Parsing " <> cabalFile <> "..." - packageDescription <- Cabal.readGenericPackageDescription Cabal.silent cabalFile - let library :: [Cabal.Library] - library = maybeToList $ fst . Cabal.ignoreConditions <$> - Cabal.condLibrary packageDescription - - subLibraries :: [Cabal.Library] - subLibraries = fst . Cabal.ignoreConditions . snd <$> - Cabal.condSubLibraries packageDescription - - executables :: [Cabal.Executable] - executables = fst . Cabal.ignoreConditions . snd <$> - Cabal.condExecutables packageDescription - - testSuites :: [Cabal.TestSuite] - testSuites = fst . Cabal.ignoreConditions . snd <$> - Cabal.condTestSuites packageDescription - - benchmarks :: [Cabal.Benchmark] - benchmarks = fst . Cabal.ignoreConditions . snd <$> - Cabal.condBenchmarks packageDescription - - gatherBuildInfos :: [Cabal.BuildInfo] - gatherBuildInfos = map Cabal.libBuildInfo library <> - map Cabal.libBuildInfo subLibraries <> - map Cabal.buildInfo executables <> - map Cabal.testBuildInfo testSuites <> - map Cabal.benchmarkBuildInfo benchmarks - - defaultExtensions :: [Language.KnownExtension] - defaultExtensions = map fromEnabled . filter isEnabled $ - concatMap Cabal.defaultExtensions gatherBuildInfos - where isEnabled (Language.EnableExtension _) = True - isEnabled _ = False - - fromEnabled (Language.EnableExtension x) = x - fromEnabled x = - error $ "Language.Haskell.Stylish.Config.readLanguageExtensions: " <> - "invalid LANGUAGE pragma: " <> show x - verbose $ "Gathered default-extensions: " <> show defaultExtensions - pure $ nub defaultExtensions -------------------------------------------------------------------------------- parseConfig :: A.Value -> A.Parser Config @@ -196,6 +123,7 @@ parseConfig (A.Object o) = do <*> (o A..:? "columns" A..!= 80) <*> (o A..:? "language_extensions" A..!= []) <*> (o A..:? "newline" >>= parseEnum newlines IO.nativeNewline) + <*> (o A..:? "cabal" A..!= True) -- Then fill in the steps based on the partial config we already have stepValues <- o A..: "steps" :: A.Parser [A.Value] |