ghc-mod/Language/Haskell/GhcMod/Debug.hs
2013-09-05 14:35:28 +09:00

54 lines
1.7 KiB
Haskell

module Language.Haskell.GhcMod.Debug (debugInfo, debug) where
import Control.Applicative
import Control.Exception.IOChoice
import Control.Monad
import Data.List (intercalate)
import Data.Maybe
import GHC
import GhcMonad (liftIO)
import Language.Haskell.GhcMod.CabalApi
import Language.Haskell.GhcMod.GHCApi
import Language.Haskell.GhcMod.Types
import Prelude
----------------------------------------------------------------
-- | Obtaining debug information.
debugInfo :: Options
-> Cradle
-> GHCVersion
-> FilePath -- ^ A target file.
-> IO String
debugInfo opt cradle ver fileName = unlines <$> withGHC fileName (debug opt cradle ver fileName)
-- | Obtaining debug information.
debug :: Options
-> Cradle
-> GHCVersion
-> FilePath -- ^ A target file.
-> Ghc [String]
debug opt cradle ver fileName = do
(gopts, incDir, pkgs) <-
if cabal then
liftIO $ fromCabalFile (ghcOpts opt) cradle ||> return (ghcOpts opt, [], [])
else
return (ghcOpts opt, [], [])
[fast] <- do
void $ initializeFlagsWithCradle opt cradle gopts True
setTargetFiles [fileName]
pure . canCheckFast <$> depanal [] False
return [
"GHC version: " ++ ver
, "Current directory: " ++ currentDir
, "Cabal file: " ++ cabalFile
, "GHC options: " ++ unwords gopts
, "Include directories: " ++ unwords incDir
, "Dependent packages: " ++ intercalate ", " pkgs
, "Fast check: " ++ if fast then "Yes" else "No"
]
where
currentDir = cradleCurrentDir cradle
cabal = isJust $ cradleCabalFile cradle
cabalFile = fromMaybe "" $ cradleCabalFile cradle