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