-data BarfKind
- = PhaseFailed String ExitCode
- | Interrupted
- | UsageError String -- prints the short usage msg after the error
- | OtherError String -- just prints the error message
- deriving Eq
-
-prog_name = unsafePerformIO (getProgName)
-{-# NOINLINE prog_name #-}
-
-instance Show BarfKind where
- showsPrec _ e = showString prog_name . showString ": " . showBarf e
-
-showBarf (UsageError str)
- = showString str . showChar '\n' . showString short_usage
-showBarf (OtherError str)
- = showString str
-showBarf (PhaseFailed phase code)
- = showString phase . showString " failed, code = " . shows code
-showBarf (Interrupted)
- = showString "interrupted"
-
-unknownFlagErr f = throwDyn (UsageError ("unrecognised flag: " ++ f))
-
-barfKindTc = mkTyCon "BarfKind"
-{-# NOINLINE barfKindTc #-}
-instance Typeable BarfKind where
- typeOf _ = mkAppTy barfKindTc []
-