76 lines
2.5 KiB
Haskell
76 lines
2.5 KiB
Haskell
module Language.Haskell.GhcMod.Debug (debugInfo, debug, rootInfo, root) where
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import Control.Applicative ((<$>))
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import Control.Exception.IOChoice ((||>))
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import Control.Monad (void)
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import CoreMonad (liftIO)
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import Data.List (intercalate)
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import Data.Maybe (fromMaybe, isJust, fromJust)
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import GHC (Ghc)
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import Language.Haskell.GhcMod.CabalApi
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import Language.Haskell.GhcMod.GHCApi
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import Language.Haskell.GhcMod.Types
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----------------------------------------------------------------
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-- | Obtaining debug information.
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debugInfo :: Options
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-> Cradle
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-> FilePath -- ^ A target file.
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-> IO String
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debugInfo opt cradle fileName = unlines <$> withGHC fileName (debug opt cradle fileName)
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-- | Obtaining debug information.
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debug :: Options
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-> Cradle
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-> FilePath -- ^ A target file.
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-> Ghc [String]
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debug opt cradle fileName = do
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CompilerOptions gopts incDir pkgs <-
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if cabal then
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liftIO (fromCabalFile ||> return simpleCompilerOption)
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else
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return simpleCompilerOption
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void $ initializeFlagsWithCradle opt cradle gopts True
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setTargetFiles [fileName]
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return [
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"Root directory: " ++ rootDir
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, "Current directory: " ++ currentDir
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, "Cabal file: " ++ cabalFile
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, "GHC options: " ++ unwords gopts
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, "Include directories: " ++ unwords incDir
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, "Dependent packages: " ++ intercalate ", " (map fst pkgs)
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]
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where
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currentDir = cradleCurrentDir cradle
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mCabalFile = cradleCabalFile cradle
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mCabalDir = cradleCabalDir cradle
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rootDir = fromMaybe currentDir mCabalDir
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cabal = isJust mCabalFile
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cabalFile = fromMaybe "" mCabalFile
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origGopts = ghcOpts opt
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simpleCompilerOption = CompilerOptions origGopts [] []
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fromCabalFile = parseCabalFile file >>= getCompilerOptions origGopts cradle
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where
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file = fromJust mCabalFile
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----------------------------------------------------------------
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-- | Obtaining root information.
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rootInfo :: Options
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-> Cradle
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-> FilePath -- ^ A target file.
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-> IO String
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rootInfo opt cradle fileName = withGHC fileName (root opt cradle fileName)
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-- | Obtaining root information.
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root :: Options
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-> Cradle
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-> FilePath -- ^ A target file.
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-> Ghc String
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root _ cradle _ = return $ rootDir ++ "\n"
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where
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currentDir = cradleCurrentDir cradle
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mCabalDir = cradleCabalDir cradle
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rootDir = fromMaybe currentDir mCabalDir
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