56 lines
1.7 KiB
Haskell
56 lines
1.7 KiB
Haskell
module Language.Haskell.GhcMod.World where
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import Language.Haskell.GhcMod.GhcPkg
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import Language.Haskell.GhcMod.PathsAndFiles
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import Language.Haskell.GhcMod.Types
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import Language.Haskell.GhcMod.Monad.Types
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import Language.Haskell.GhcMod.Utils
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import Control.Applicative
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import Data.Maybe
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import Data.Traversable hiding (mapM)
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import System.FilePath ((</>))
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import GHC.Paths (libdir)
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import Prelude
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data World = World {
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worldPackageCaches :: [TimedFile]
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, worldCabalFile :: Maybe TimedFile
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, worldCabalConfig :: Maybe TimedFile
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, worldCabalSandboxConfig :: Maybe TimedFile
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, worldMappedFiles :: FileMappingMap
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} deriving (Eq)
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timedPackageCaches :: IOish m => GhcModT m [TimedFile]
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timedPackageCaches = do
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fs <- mapM (liftIO . mightExist) . map (</> packageCache)
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=<< getPackageCachePaths libdir
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(liftIO . timeFile) `mapM` catMaybes fs
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getCurrentWorld :: IOish m => GhcModT m World
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getCurrentWorld = do
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crdl <- cradle
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pkgCaches <- timedPackageCaches
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mCabalFile <- liftIO $ timeFile `traverse` cradleCabalFile crdl
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mCabalConfig <- liftIO $ timeMaybe (setupConfigFile crdl)
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mCabalSandboxConfig <- liftIO $ timeMaybe (sandboxConfigFile crdl)
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mFileMap <- getMMappedFiles
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return World {
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worldPackageCaches = pkgCaches
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, worldCabalFile = mCabalFile
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, worldCabalConfig = mCabalConfig
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, worldCabalSandboxConfig = mCabalSandboxConfig
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, worldMappedFiles = mFileMap
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}
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didWorldChange :: IOish m => World -> GhcModT m Bool
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didWorldChange world = do
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(world /=) <$> getCurrentWorld
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isYoungerThanSetupConfig :: FilePath -> World -> IO Bool
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isYoungerThanSetupConfig file World {..} = do
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tfile <- timeFile file
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return $ worldCabalConfig < Just tfile
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