91 lines
2.7 KiB
Haskell
91 lines
2.7 KiB
Haskell
{-# LANGUAGE CPP #-}
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{-# LANGUAGE DataKinds #-}
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{-# LANGUAGE FlexibleContexts #-}
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{-# LANGUAGE FlexibleInstances #-}
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{-# LANGUAGE ScopedTypeVariables #-}
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{-# LANGUAGE TypeFamilies #-}
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{-# LANGUAGE TypeOperators #-}
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{-|
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Module : GHCup.Prelude
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Description : MegaParsec utilities
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Copyright : (c) Julian Ospald, 2020
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License : LGPL-3.0
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Maintainer : hasufell@hasufell.de
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Stability : experimental
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Portability : portable
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GHCup specific prelude. Lots of Excepts functionality.
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-}
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module GHCup.Prelude
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(module GHCup.Prelude,
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module GHCup.Prelude.Internal,
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#if defined(IS_WINDOWS)
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module GHCup.Prelude.Windows
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#else
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module GHCup.Prelude.Posix
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#endif
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)
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where
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import GHCup.Errors
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import GHCup.Prelude.Internal
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import GHCup.Types.Optics (HasLog)
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import GHCup.Prelude.Logger (logWarn)
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#if defined(IS_WINDOWS)
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import GHCup.Prelude.Windows
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#else
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import GHCup.Prelude.Posix
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#endif
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import Control.Monad.IO.Class
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import Control.Monad.Reader
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import Haskus.Utils.Variant.Excepts
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import Text.PrettyPrint.HughesPJClass ( Pretty )
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import qualified Data.Text as T
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-- for some obscure reason... this won't type-check if we move it to a different module
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catchWarn :: forall es m env . ( Pretty (V es)
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, HFErrorProject (V es)
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, MonadReader env m
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, HasLog env
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, MonadIO m
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, Monad m) => Excepts es m () -> Excepts '[] m ()
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catchWarn = catchAllE @_ @es (\v -> lift $ logWarn (T.pack . prettyHFError $ v))
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runBothE' :: forall e m a b .
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( Monad m
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, Show (V e)
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, Pretty (V e)
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, HFErrorProject (V e)
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, PopVariant InstallSetError e
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, LiftVariant' e (InstallSetError ': e)
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, e :<< (InstallSetError ': e)
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)
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=> Excepts e m a
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-> Excepts e m b
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-> Excepts (InstallSetError ': e) m ()
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runBothE' a1 a2 = do
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r1 <- lift $ runE @e a1
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r2 <- lift $ runE @e a2
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case (r1, r2) of
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(VLeft e1, VLeft e2) -> throwE (InstallSetError e1 e2)
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(VLeft e , _ ) -> throwSomeE e
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(_ , VLeft e ) -> throwSomeE e
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(VRight _, VRight _) -> pure ()
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-- "throwSomeE" function has been upstreamed in haskus-utils-variant-3.3
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-- So, only conditionally include this shim if
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-- haskus-utils-variant version is < 3.3
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#if MIN_VERSION_haskus_utils_variant(3,3,0)
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#else
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-- | Throw some exception
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throwSomeE :: forall es' es a m. (Monad m, LiftVariant es' es) => V es' -> Excepts es m a
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{-# INLINABLE throwSomeE #-}
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throwSomeE = Excepts . pure . VLeft . liftVariant
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#endif
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