ref: dc44e7daef20e01088ba4ed8e287dcf8a7df8c07
dir: /lib/Control/Error.hs/
-- Copyright 2023 Lennart Augustsson
-- See LICENSE file for full license.
module Control.Error(error, undefined, ErrorCall(..)) where
import Prelude() -- do not import Prelude
import Data.Char_Type
import Data.List_Type
import Control.Exception.Internal
import {-# SOURCE #-} Data.Typeable
import Text.Show
newtype ErrorCall = ErrorCall String
deriving (Typeable)
instance Show ErrorCall where
show (ErrorCall s) = ("error: "::String) ++ s
instance Exception ErrorCall
error :: forall a . String -> a
error s = throw (ErrorCall s)
undefined :: forall a . a
undefined = error "undefined"