module Language.Haskell.GhcMod.Debug (debugInfo, rootInfo, componentInfo) where import Control.Arrow (first) import Control.Applicative import Control.Monad import qualified Data.Map as Map import qualified Data.Set as Set import Data.Char import Data.List.Split import Text.PrettyPrint import Language.Haskell.GhcMod.Convert 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.PathsAndFiles ---------------------------------------------------------------- -- | 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 return $ unlines $ [ "Root directory: " ++ cradleRootDir , "Current directory: " ++ cradleCurrentDir , "GHC Package flags:\n" ++ render (nest 4 $ fsep $ map text pkgOpts) , "GHC System libraries: " ++ ghcLibDir , "GHC user options:\n" ++ render (nest 4 $ fsep $ map text optGhcUserOptions) ] ++ 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 return $ [ "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 :: IOish m => GhcModT m String rootInfo = convert' =<< cradleRootDir <$> cradle