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.Common
  13 import Language.Symantic.Trans.Common
  14
  15 -- * Class 'Sym_Int'
  16 -- | Symantic.
  17 class Sym_Int repr where
  18         int    ::      Int -> repr Int
  19         abs    :: repr Int -> repr Int
  20         negate :: repr Int -> repr Int
  21         (+)    :: repr Int -> repr Int -> repr Int
  22         (-)    :: repr Int -> repr Int -> repr Int
  23         (*)    :: repr Int -> repr Int -> repr Int
  24         mod    :: repr Int -> repr Int -> repr Int
  25
  26         default int    :: Trans t repr =>        Int -> t repr Int
  27         default abs    :: Trans t repr => t repr Int -> t repr Int
  28         default negate :: Trans t repr => t repr Int -> t repr Int
  29         default (+)    :: Trans t repr => t repr Int -> t repr Int -> t repr Int
  30         default (-)    :: Trans t repr => t repr Int -> t repr Int -> t repr Int
  31         default (*)    :: Trans t repr => t repr Int -> t repr Int -> t repr Int
  32         default mod    :: Trans t repr => t repr Int -> t repr Int -> t repr Int
  33         int    = trans_lift . int
  34         abs    = trans_map1 abs
  35         negate = trans_map1 negate
  36         (+)    = trans_map2 (+)
  37         (-)    = trans_map2 (-)
  38         (*)    = trans_map2 (*)
  39         mod    = trans_map2 mod
  40 infixl 6 +
  41 infixl 6 -
  42 infixl 7 *
  43 infixl 7 `mod`
  44
  45 -- * Type 'Expr_Int'
  46 -- | Expression.
  47 data Expr_Int (root:: *)
  48 type instance Root_of_Expr      (Expr_Int root)      = root
  49 type instance Type_of_Expr      (Expr_Int root)      = Type_Int
  50 type instance Sym_of_Expr       (Expr_Int root) repr = Sym_Int repr
  51 type instance Error_of_Expr ast (Expr_Int root)      = No_Error_Expr