Language/Symantic/Expr/Int.hs

   1 {-# LANGUAGE DefaultSignatures #-}
   2 {-# LANGUAGE FlexibleContexts #-}
   3 {-# LANGUAGE ScopedTypeVariables #-}
   4 {-# LANGUAGE TypeFamilies #-}
   5 {-# LANGUAGE TypeOperators #-}
   6 -- | Expression for 'Int'.
   7 module Language.Symantic.Expr.Int where
   8
   9 import Prelude hiding ((+), (-), (*), abs, mod, negate)
  10
  11 import Language.Symantic.Type
  12 import Language.Symantic.Expr.Root
  13 import Language.Symantic.Expr.Error
  14 import Language.Symantic.Expr.From
  15 import Language.Symantic.Trans.Common
  16
  17 -- * Class 'Sym_Int'
  18 -- | Symantic.
  19 class Sym_Int repr where
  20         int    ::      Int -> repr Int
  21         abs    :: repr Int -> repr Int
  22         negate :: repr Int -> repr Int
  23         (+)    :: repr Int -> repr Int -> repr Int
  24         (-)    :: repr Int -> repr Int -> repr Int
  25         (*)    :: repr Int -> repr Int -> repr Int
  26         mod    :: repr Int -> repr Int -> repr Int
  27
  28         default int    :: Trans t repr =>        Int -> t repr Int
  29         default abs    :: Trans t repr => t repr Int -> t repr Int
  30         default negate :: Trans t repr => t repr Int -> t repr Int
  31         default (+)    :: Trans t repr => t repr Int -> t repr Int -> t repr Int
  32         default (-)    :: Trans t repr => t repr Int -> t repr Int -> t repr Int
  33         default (*)    :: Trans t repr => t repr Int -> t repr Int -> t repr Int
  34         default mod    :: Trans t repr => t repr Int -> t repr Int -> t repr Int
  35         int    = trans_lift . int
  36         abs    = trans_map1 abs
  37         negate = trans_map1 negate
  38         (+)    = trans_map2 (+)
  39         (-)    = trans_map2 (-)
  40         (*)    = trans_map2 (*)
  41         mod    = trans_map2 mod
  42 infixl 6 +
  43 infixl 6 -
  44 infixl 7 *
  45 infixl 7 `mod`
  46
  47 -- * Type 'Expr_Int'
  48 -- | Expression.
  49 data Expr_Int (root:: *)
  50 type instance Root_of_Expr      (Expr_Int root)      = root
  51 type instance Type_of_Expr      (Expr_Int root)      = Type_Int
  52 type instance Sym_of_Expr       (Expr_Int root) repr = Sym_Int repr
  53 type instance Error_of_Expr ast (Expr_Int root)      = No_Error_Expr