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 GHC (Ghc)
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import qualified GHC as G
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import Language.Haskell.GhcMod.GHCApi
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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 cradle = withGHC' $ do
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initializeFlagsWithCradle opt cradle
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modules opt
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-- | Listing installed modules.
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modules :: Options -> Ghc String
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modules opt = convert opt . arrange <$> (getModules `G.gcatch` handler)
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where
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getModules = getExposedModules <$> 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 = nub . sort . map dropPkgs
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dropPkgs (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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