Language/Symantic/Type/Unit.hs

   1 {-# LANGUAGE FlexibleContexts #-}
   2 {-# LANGUAGE FlexibleInstances #-}
   3 {-# LANGUAGE ScopedTypeVariables #-}
   4 {-# LANGUAGE TypeFamilies #-}
   5 {-# OPTIONS_GHC -fno-warn-orphans #-}
   6 module Language.Symantic.Type.Unit where
   7
   8 import Language.Symantic.Type.Common
   9
  10 -- * Type 'Type_Unit'
  11 -- | The @()@ type.
  12 type Type_Unit = Type_Type0 ()
  13
  14 instance -- String_from_Type
  15  String_from_Type (Type_Unit root) where
  16         string_from_type _ = "()"
  17
  18 -- | Convenient alias to include a 'Type_Unit' within a type.
  19 type_unit :: Lift_Type_Root Type_Unit root => root ()
  20 type_unit = type_type0