module Language.Haskell.GhcMod.Debug (debugInfo, rootInfo, componentInfo) where import Control.Arrow (first) import Control.Applicative import Control.Monad import Control.Monad.Trans.Journal import qualified Data.Map as Map import qualified Data.Set as Set import Data.Char import Data.Version import Data.List.Split import System.Directory import Text.PrettyPrint import Language.Haskell.GhcMod.Monad import Language.Haskell.GhcMod.Types import Language.Haskell.GhcMod.Internal import Language.Haskell.GhcMod.Target import Language.Haskell.GhcMod.Pretty import Language.Haskell.GhcMod.Utils import Language.Haskell.GhcMod.Cradle import Language.Haskell.GhcMod.Stack import Language.Haskell.GhcMod.Output import Paths_ghc_mod (version) import Config (cProjectVersion) ---------------------------------------------------------------- -- | Obtaining debug information. debugInfo :: IOish m => GhcModT m String debugInfo = do Options {..} <- options Cradle {..} <- cradle cabal <- case cradleProject of CabalProject -> cabalDebug StackProject {} -> (++) <$> stackPaths <*> cabalDebug _ -> return [] pkgOpts <- packageGhcOptions readProc <- gmReadProcess ghcVersion <- liftIO $ dropWhileEnd isSpace <$> readProc "ghc" ["--numeric-version"] "" return $ unlines $ [ "Version: ghc-mod-" ++ showVersion version , "Library GHC Version: " ++ cProjectVersion , "System GHC Version: " ++ ghcVersion , "Root directory: " ++ cradleRootDir , "Current directory: " ++ cradleCurrentDir , "GHC Package flags:\n" ++ render (nest 4 $ fsep $ map text pkgOpts) , "GHC System libraries: " ++ ghcLibDir ] ++ cabal stackPaths :: IOish m => GhcModT m [String] stackPaths = do Cradle { cradleProject = StackProject senv } <- cradle ghc <- getStackGhcPath senv ghcPkg <- getStackGhcPkgPath senv return $ [ "Stack ghc executable: " ++ show ghc , "Stack ghc-pkg executable:" ++ show ghcPkg ] cabalDebug :: IOish m => GhcModT m [String] cabalDebug = do Cradle {..} <- cradle mcs <- cabalResolvedComponents let entrypoints = Map.map gmcEntrypoints mcs graphs = Map.map gmcHomeModuleGraph mcs opts = Map.map gmcGhcOpts mcs srcOpts = Map.map gmcGhcSrcOpts mcs readProc <- gmReadProcess cabalExists <- liftIO $ (/=Nothing) <$> findExecutable "cabal" cabalInstVersion <- if cabalExists then liftIO $ dropWhileEnd isSpace <$> readProc "cabal" ["--numeric-version"] "" else return "" packages <- liftIO $ readProc "ghc-pkg" ["list", "--simple-output"] "" let cabalPackages = filter ((== ["Cabal"]) . take 1 . splitOn "-") $ splitWhen isSpace packages return $ [ "cabal-install Version: " ++ cabalInstVersion , "Cabal Library Versions:\n" ++ render (nest 4 $ fsep $ map text cabalPackages) , "Cabal file: " ++ show cradleCabalFile , "Project: " ++ show cradleProject , "Cabal entrypoints:\n" ++ render (nest 4 $ mapDoc gmComponentNameDoc smpDoc entrypoints) , "Cabal components:\n" ++ render (nest 4 $ mapDoc gmComponentNameDoc graphDoc graphs) , "GHC Cabal options:\n" ++ render (nest 4 $ mapDoc gmComponentNameDoc (fsep . map text) opts) , "GHC search path options:\n" ++ render (nest 4 $ mapDoc gmComponentNameDoc (fsep . map text) srcOpts) ] componentInfo :: IOish m => [String] -> GhcModT m String componentInfo ts = do -- TODO: most of this is copypasta of targetGhcOptions. Factor out more -- useful function from there. crdl <- cradle sefnmn <- Set.fromList `liftM` mapM guessModuleFile ts mcs <- cabalResolvedComponents let mdlcs = moduleComponents mcs `zipMap` Set.toList sefnmn candidates = findCandidates $ map snd mdlcs cn = pickComponent candidates opts <- targetGhcOptions crdl sefnmn return $ unlines $ [ "Matching Components:\n" ++ render (nest 4 $ alistDoc (either text mnDoc) (setDoc gmComponentNameDoc) mdlcs) , "Picked Component:\n" ++ render (nest 4 $ gmComponentNameDoc cn) , "GHC Cabal options:\n" ++ render (nest 4 $ fsep $ map text opts) ] where zipMap f l = l `zip` (f `map` l) guessModuleFile :: MonadIO m => String -> m (Either FilePath ModuleName) guessModuleFile m | (isUpper . head .&&. (all $ all $ isAlphaNum .||. (=='.')) . splitOn ".") m = return $ Right $ mkModuleName m where infixr 1 .||. infixr 2 .&&. (.||.) = liftA2 (||) (.&&.) = liftA2 (&&) guessModuleFile str = Left `liftM` liftIO (canonFilePath str) graphDoc :: GmModuleGraph -> Doc graphDoc GmModuleGraph{..} = mapDoc mpDoc smpDoc' gmgGraph where smpDoc' smp = vcat $ map mpDoc' $ Set.toList smp mpDoc' = text . moduleNameString . mpModule setDoc :: (a -> Doc) -> Set.Set a -> Doc setDoc f s = vcat $ map f $ Set.toList s smpDoc :: Set.Set ModulePath -> Doc smpDoc smp = setDoc mpDoc smp mpDoc :: ModulePath -> Doc mpDoc (ModulePath mn fn) = text (moduleNameString mn) <+> parens (text fn) mnDoc :: ModuleName -> Doc mnDoc mn = text (moduleNameString mn) alistDoc :: Ord k => (k -> Doc) -> (a -> Doc) -> [(k, a)] -> Doc alistDoc fk fa alist = mapDoc fk fa (Map.fromList alist) mapDoc :: (k -> Doc) -> (a -> Doc) -> Map.Map k a -> Doc mapDoc kd ad m = vcat $ map (uncurry ($+$)) $ map (first kd) $ Map.toList $ Map.map (nest 4 . ad) m ---------------------------------------------------------------- -- | Obtaining root information. rootInfo :: forall m. (IOish m, GmOut m) => m String rootInfo = (++"\n") . cradleRootDir <$> fst `liftM` (runJournalT findCradle :: m (Cradle, GhcModLog))