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Merge pull request #264 from georgefst/fourmolu
Add fourmolu plugin (attempt 2) and add Brittany for ghc-8.10.1
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,95 @@ | ||
| {-# LANGUAGE OverloadedStrings #-} | ||
| {-# LANGUAGE PackageImports #-} | ||
| {-# LANGUAGE RecordWildCards #-} | ||
| {-# LANGUAGE ScopedTypeVariables #-} | ||
| {-# LANGUAGE TypeApplications #-} | ||
|
|
||
| module Ide.Plugin.Fourmolu | ||
| ( | ||
| descriptor | ||
| , provider | ||
| ) | ||
| where | ||
|
|
||
| import Control.Exception | ||
| import qualified Data.Text as T | ||
| import Development.IDE.Core.Rules | ||
| import Development.IDE.Core.RuleTypes (GhcSession (GhcSession)) | ||
| import Development.IDE.Core.Shake (use) | ||
| import Development.IDE.GHC.Util (hscEnv) | ||
| import Development.IDE.Types.Diagnostics as D | ||
| import Development.IDE.Types.Location | ||
| import qualified DynFlags as D | ||
| import qualified EnumSet as S | ||
| import GHC | ||
| import GHC.LanguageExtensions.Type | ||
| import GhcPlugins (HscEnv (hsc_dflags)) | ||
| import Ide.Plugin.Formatter | ||
| import Ide.PluginUtils | ||
| import Ide.Types | ||
| import Language.Haskell.LSP.Core (LspFuncs (withIndefiniteProgress), | ||
| ProgressCancellable (Cancellable)) | ||
| import Language.Haskell.LSP.Types | ||
| import "fourmolu" Ormolu | ||
| import System.FilePath (takeFileName) | ||
| import Text.Regex.TDFA.Text () | ||
|
|
||
| -- --------------------------------------------------------------------- | ||
|
|
||
| descriptor :: PluginId -> PluginDescriptor | ||
| descriptor plId = (defaultPluginDescriptor plId) | ||
| { pluginFormattingProvider = Just provider | ||
| } | ||
|
|
||
| -- --------------------------------------------------------------------- | ||
|
|
||
| provider :: FormattingProvider IO | ||
| provider lf ideState typ contents fp _ = withIndefiniteProgress lf title Cancellable $ do | ||
| let | ||
| fromDyn :: DynFlags -> IO [DynOption] | ||
| fromDyn df = | ||
| let | ||
| pp = | ||
| let p = D.sPgm_F $ D.settings df | ||
| in if null p then [] else ["-pgmF=" <> p] | ||
| pm = map (("-fplugin=" <>) . moduleNameString) $ D.pluginModNames df | ||
| ex = map showExtension $ S.toList $ D.extensionFlags df | ||
| in | ||
| return $ map DynOption $ pp <> pm <> ex | ||
|
|
||
| ghc <- runAction "Fourmolu" ideState $ use GhcSession fp | ||
| let df = hsc_dflags . hscEnv <$> ghc | ||
| fileOpts <- case df of | ||
| Nothing -> return [] | ||
| Just df -> fromDyn df | ||
|
|
||
| let | ||
| fullRegion = RegionIndices Nothing Nothing | ||
| rangeRegion s e = RegionIndices (Just $ s + 1) (Just $ e + 1) | ||
| mkConf o region = do | ||
| printerOpts <- loadConfigFile True (Just fp') defaultPrinterOpts | ||
| return $ defaultConfig | ||
| { cfgDynOptions = o | ||
| , cfgRegion = region | ||
| , cfgDebug = True | ||
| , cfgPrinterOpts = printerOpts | ||
| } | ||
| fmt :: T.Text -> Config RegionIndices -> IO (Either OrmoluException T.Text) | ||
| fmt cont conf = | ||
| try @OrmoluException (ormolu conf fp' $ T.unpack cont) | ||
| fp' = fromNormalizedFilePath fp | ||
|
|
||
| case typ of | ||
| FormatText -> ret <$> (fmt contents =<< mkConf fileOpts fullRegion) | ||
| FormatRange (Range (Position sl _) (Position el _)) -> | ||
| ret <$> (fmt contents =<< mkConf fileOpts (rangeRegion sl el)) | ||
| where | ||
| title = T.pack $ "Formatting " <> takeFileName (fromNormalizedFilePath fp) | ||
| ret :: Either OrmoluException T.Text -> Either ResponseError (List TextEdit) | ||
| ret (Left err) = Left | ||
| (responseError (T.pack $ "fourmoluCmd: " ++ show err) ) | ||
| ret (Right new) = Right (makeDiffTextEdit contents new) | ||
|
|
||
| showExtension :: Extension -> String | ||
| showExtension Cpp = "-XCPP" | ||
| showExtension other = "-X" ++ show other |
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