IdeSession.Util

Misc util

showExWithClass :: SomeException -> String

Show an exception together with its most precise type tag.

accessorName :: String -> Maybe String

Translate record field _name to the accessor name

lookup' :: Eq a => a -> Accessor [(a, b)] (Maybe b)

Prelude.lookup as an accessor

envWithPathOverride :: [FilePath] -> IO (Maybe [(String, String)])

writeFileAtomic :: FilePath -> ByteString -> IO MD5Digest

Writes a file atomically.

The file is either written successfully or an IO exception is raised and the original file is left unchanged.

On windows it is not possible to delete a file that is open by a process. This case will give an IO exception but the atomic property is not affected.

Returns the hash of the file; we are careful not to force the entire input bytestring into memory (we compute the hash as we write the file).

setupEnv :: [(String, String)] -> [(String, Maybe String)] -> IO ()

First restore the environment to the specified initial environment, then apply the given overrides

relInclToOpts :: FilePath -> [FilePath] -> [String]

parseProgressMessage :: Text -> Either String (Int, Int, Text)

ignoreDoesNotExist :: IO () -> IO ()

Ignore "does not exist" exception

interruptible :: IO a -> IO a

Define interruptiple operations

(TODO: Stick in reference to blog post)

Simple diffs

data Diff a

Constructors

Keep

Remove

Insert a

Instances

Functor Diff

Show a => Show (Diff a)

Generic (Diff a)

Binary a => Binary (Diff a)

PrettyVal a => PrettyVal (Diff a)

type Rep (Diff a)

applyMapDiff :: forall k v. Ord k => Strict (Map k) (Diff v) -> Strict (Map k) v -> Strict (Map k) v

Manipulating stdout and stderr

swizzleStdout :: Fd -> IO a -> IO a

swizzleStderr :: Fd -> IO a -> IO a

redirectStderr :: FilePath -> IO a -> IO a

captureOutput :: IO a -> IO (String, a)