never executed always true always false

    1 {-# LANGUAGE DeriveGeneric, DeriveDataTypeable, DeriveFunctor, DeriveTraversable, DeriveFoldable #-}
    2 
    3 module Conjure.Language.Expression.Op.DontCare where
    4 
    5 import Conjure.Prelude
    6 import Conjure.Language.Expression.Op.Internal.Common
    7 
    8 import qualified Data.Aeson as JSON             -- aeson
    9 import qualified Data.Aeson.KeyMap as KM
   10 
   11 import qualified Data.Vector as V               -- vector
   12 
   13 
   14 data OpDontCare x = OpDontCare x
   15     deriving (Eq, Ord, Show, Data, Functor, Traversable, Foldable, Typeable, Generic)
   16 
   17 instance Serialize x => Serialize (OpDontCare x)
   18 instance Hashable  x => Hashable  (OpDontCare x)
   19 instance ToJSON    x => ToJSON    (OpDontCare x) where toJSON = genericToJSON jsonOptions
   20 instance FromJSON  x => FromJSON  (OpDontCare x) where parseJSON = genericParseJSON jsonOptions
   21 
   22 instance TypeOf (OpDontCare x) where
   23     typeOf (OpDontCare _) = return TypeBool
   24 
   25 instance SimplifyOp OpDontCare x where
   26     simplifyOp _ = na "simplifyOp{OpDontCare}"
   27 
   28 instance Pretty x => Pretty (OpDontCare x) where
   29     prettyPrec _ (OpDontCare a) = "dontCare" <> prParens (pretty a)
   30 
   31 instance VarSymBreakingDescription x => VarSymBreakingDescription (OpDontCare x) where
   32     varSymBreakingDescription (OpDontCare a) = JSON.Object $ KM.fromList
   33         [ ("type", JSON.String "OpDontCare")
   34         , ("children", JSON.Array $ V.fromList
   35             [ varSymBreakingDescription a
   36             ])
   37         ]