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gyehoek-hs/app/Gyehoek/Options.hs
2026-05-15 19:55:51 -06:00

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{-# LANGUAGE NoFieldSelectors #-}
module Gyehoek.Options
( Options(..)
, parser
)
where
import System.IO (Handle)
import Data.HashSet (HashSet)
import Options.Applicative
import System.FilePath
import qualified Data.HashSet as HS
import Control.Lens hiding (argument)
import GHC.Generics (Generic)
data Options = MkOptions
{ -- dumpANF :: Maybe FilePath
-- , dumpQBE :: Maybe FilePath
output :: Maybe FilePath
, sourceFiles :: HashSet FilePath
}
deriving (Show, Generic)
-- osPath :: ReadM _
-- osPath = eitherReader $
-- (_Left %~ show) . encodeUtf @(Either _)
-- parseDumpQBE =
-- optional $ strOption
-- ( long "dump-qbe"
-- <> metavar "FILE"
-- )
-- parseDumpANF =
-- optional $ strOption
-- ( long "dump-anf"
-- <> metavar "FILE"
-- )
parseOutput =
optional $ strOption
( long "output"
<> short 'o'
<> metavar "FILE"
)
parser :: Parser Options
parser = MkOptions
<$> parseOutput
<*> (HS.fromList <$> some (argument str (metavar "FILES")))