Serokell.Util.Exceptions

Bitgram's general-purpose exceptions. They may be useful when you need a simple instance of Exception (e. g. in MonadThrow context)

Documentation

newtype TextException

Use this type if you are sure that text description is enough to represent error

Constructors

TextException

Fields

• teMessage :: Text

Instances

Show TextException

Methods

showsPrec :: Int -> TextException -> ShowS

show :: TextException -> String

showList :: [TextException] -> ShowS

Exception TextException

Methods

toException :: TextException -> SomeException

fromException :: SomeException -> Maybe TextException

displayException :: TextException -> String

Buildable TextException

Methods

build :: TextException -> Builder

throwText :: MonadThrow m => Text -> m a

data EmptyException

Use this type if you want to signal about error and there may be only one reason for it

Constructors

EmptyException

Instances

Show EmptyException

Methods

showsPrec :: Int -> EmptyException -> ShowS

show :: EmptyException -> String

showList :: [EmptyException] -> ShowS

Exception EmptyException

Methods

toException :: EmptyException -> SomeException

fromException :: SomeException -> Maybe EmptyException

displayException :: EmptyException -> String

throwEmpty :: MonadThrow m => m a

eitherToFail :: (Monad m, e ~ SomeException) => Either e a -> m a

Convert MonadThrow to arbitrary monad using fail to report error Useful when you have MonadThrow and want to use it in another monad context which uses fail for errors

Orphan instances

Buildable SomeException

Methods

build :: SomeException -> Builder