module Universum.Exception
( module Control.Exception.Safe
#if ( __GLASGOW_HASKELL__ >= 800 )
, Bug (..)
, bug
#endif
, note
) where
import Control.Exception.Safe (Exception, MonadCatch, MonadMask (..), MonadThrow,
SomeException (..), bracket, bracket_, catch, catchAny, finally,
throwM)
import Control.Applicative (Applicative (pure))
import Control.Monad.Except (MonadError, throwError)
import Data.Maybe (Maybe, maybe)
#if ( __GLASGOW_HASKELL__ >= 800 )
import Data.List ((++))
import GHC.Show (Show)
import GHC.Stack (CallStack, HasCallStack, callStack, prettyCallStack)
import qualified Control.Exception.Safe as Safe (displayException, impureThrow, toException)
data Bug = Bug SomeException CallStack
deriving (Show)
instance Exception Bug where
displayException (Bug e cStack) = Safe.displayException e ++ "\n"
++ prettyCallStack cStack
bug :: (HasCallStack, Exception e) => e -> a
bug e = Safe.impureThrow (Bug (Safe.toException e) callStack)
#endif
#if ( __GLASGOW_HASKELL__ >= 800 )
note :: (MonadError e m) => e -> Maybe a -> m a
note err = maybe (throwError err) pure
#else
note :: (MonadError e m, Applicative m) => e -> Maybe a -> m a
note err = maybe (throwError err) pure
#endif