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49 lines
1.2 KiB
Haskell
49 lines
1.2 KiB
Haskell
module Options
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( Brass
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, Pill
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, getPillPath
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) where
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import Control.Monad.IO.Class (MonadIO)
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import Data.Proxy (Proxy (Proxy))
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import Data.String (IsString)
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import GHC.TypeLits (KnownSymbol, Symbol)
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import Prelude
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import qualified GHC.TypeLits as TypeLits
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import qualified RIO.Directory as Directory
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import qualified Test.Tasty as Tasty
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import qualified Test.Tasty.Options as Options
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type Brass = Pill "brass"
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-- | A file-system path tagged by the pill name.
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newtype Pill (name :: Symbol) = Pill FilePath
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deriving stock (Eq, Show)
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deriving newtype (IsString)
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instance KnownSymbol name => Options.IsOption (Pill name) where
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optionName =
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pure ( TypeLits.symbolVal (Proxy @name)
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++ "-pill"
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)
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optionHelp =
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pure ( "The file path to the "
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++ TypeLits.symbolVal (Proxy @name)
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++ " pill"
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)
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defaultValue =
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Pill ( "../../../bin/"
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++ TypeLits.symbolVal (Proxy @name)
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++ ".pill"
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)
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parseValue = \case
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"" -> Nothing
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path -> Just (Pill path)
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getPillPath :: MonadIO m => Pill name -> m FilePath
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getPillPath (Pill path) = Directory.canonicalizePath path
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