ghc-mod/Language/Haskell/GhcMod/List.hs
2014-03-27 16:02:16 +09:00

35 lines
1.2 KiB
Haskell

module Language.Haskell.GhcMod.List (listModules, listMods) where
import Control.Applicative ((<$>))
import Control.Monad (void)
import Data.List (nub, sort)
import GHC (Ghc)
import qualified GHC as G
import Language.Haskell.GhcMod.GHCApi
import Language.Haskell.GhcMod.Types
import Packages (pkgIdMap, exposedModules, sourcePackageId, display)
import UniqFM (eltsUFM)
----------------------------------------------------------------
-- | Listing installed modules.
listModules :: Options -> Cradle -> IO String
listModules opt cradle = convert opt . nub . sort . map dropPkgs <$> withGHCDummyFile (listMods opt cradle)
where
dropPkgs (name, pkg)
| detailed opt = name ++ " " ++ pkg
| otherwise = name
-- | Listing installed modules.
listMods :: Options -> Cradle -> Ghc [(String, String)]
listMods opt cradle = do
void $ initializeFlagsWithCradle opt cradle [] False
getExposedModules <$> G.getSessionDynFlags
where
getExposedModules = concatMap exposedModules'
. eltsUFM . pkgIdMap . G.pkgState
exposedModules' p =
map G.moduleNameString (exposedModules p)
`zip`
repeat (display $ sourcePackageId p)