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codedmart/Types.hs

Created January 23, 2016 14:42
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Types.hs
data ConditionValues a b c = I a | T b | S c
deriving (Eq, Ord, Read, Show)
instance (ToJSON a, ToJSON b, ToJSON c) => ToJSON (ConditionValues a b c) where
toJSON (I a) = toJSON a
toJSON (T b) = toJSON b
toJSON (S b) = toJSON b
instance (FromJSON a, FromJSON b, FromJSON c) => FromJSON (ConditionValues a b c) where
-- parseJSON f = I <$> parseJSON f
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