37 lines
713 B
Haskell
37 lines
713 B
Haskell
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module Extension where
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import Control.Monad.Catch
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import System.FilePath
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data Ext
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= Pascal
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| Caml
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| Reason
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data ElimExt a = ElimExt
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{ eePascal :: a
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, eeCaml :: a
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, eeReason :: a
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}
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data UnsupportedExtension = UnsupportedExtension String
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deriving stock Show
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deriving anyclass Exception
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getExt :: MonadThrow m => FilePath -> m Ext
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getExt path = do
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case takeExtension path of
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".religo" -> return Reason
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".ligo" -> return Pascal
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".mligo" -> return Caml
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ext -> throwM $ UnsupportedExtension ext
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onExt :: ElimExt a -> FilePath -> IO a
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onExt ee path = do
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getExt path >>= return . \case
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Pascal -> eePascal ee
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Caml -> eeCaml ee
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Reason -> eeReason ee
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