37 lines
1.2 KiB
Haskell
37 lines
1.2 KiB
Haskell
module Language.Haskell.GhcMod.List (listModules, modules) where
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import Control.Applicative ((<$>))
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import Control.Exception (SomeException(..))
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import Data.List (nub, sort)
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import qualified GHC as G
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import Language.Haskell.GhcMod.Monad
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import Language.Haskell.GhcMod.Convert
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import Language.Haskell.GhcMod.Types
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import Packages (pkgIdMap, exposedModules, sourcePackageId, display)
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import UniqFM (eltsUFM)
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----------------------------------------------------------------
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-- | Listing installed modules.
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listModules :: Options -> Cradle -> IO String
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listModules opt _ = runGhcMod opt $ modules
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-- | Listing installed modules.
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modules :: GhcMod String
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modules = do
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opt <- options
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convert opt . (arrange opt) <$> (getModules `G.gcatch` handler)
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where
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getModules = getExposedModules <$> G.getSessionDynFlags
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getExposedModules = concatMap exposedModules'
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. eltsUFM . pkgIdMap . G.pkgState
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exposedModules' p =
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map G.moduleNameString (exposedModules p)
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`zip`
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repeat (display $ sourcePackageId p)
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arrange opt = nub . sort . map (dropPkgs opt)
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dropPkgs opt (name, pkg)
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| detailed opt = name ++ " " ++ pkg
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| otherwise = name
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handler (SomeException _) = return []
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