Language/Symantic/Compiling/Int.hs

   1 {-# LANGUAGE UndecidableInstances #-}
   2 {-# OPTIONS_GHC -fno-warn-orphans #-}
   3 {-# OPTIONS_GHC -fconstraint-solver-iterations=6 #-}
   4 -- | Symantic for 'Int'.
   5 module Language.Symantic.Compiling.Int where
   6
   7 import Data.Proxy
   8 import Data.Text (Text)
   9 import qualified Data.Text as Text
  10 import Data.Type.Equality ((:~:)(Refl))
  11
  12 import Language.Symantic.Parsing
  13 import Language.Symantic.Typing
  14 import Language.Symantic.Compiling.Term
  15 import Language.Symantic.Interpreting
  16 import Language.Symantic.Transforming.Trans
  17
  18 -- * Class 'Sym_Int'
  19 class Sym_Int term where
  20         int :: Int -> term Int
  21         default int :: Trans t term => Int -> t term Int
  22         int = trans_lift . int
  23
  24 type instance Sym_of_Iface (Proxy Int) = Sym_Int
  25 type instance Consts_of_Iface (Proxy Int) = Proxy Int ': Consts_imported_by Int
  26 type instance Consts_imported_by Int =
  27  [ Proxy Bounded
  28  , Proxy Enum
  29  , Proxy Eq
  30  , Proxy Integral
  31  , Proxy Num
  32  , Proxy Ord
  33  , Proxy Real
  34  ]
  35
  36 instance Sym_Int HostI where
  37         int = HostI
  38 instance Sym_Int TextI where
  39         int a = TextI $ \_p _v ->
  40                 Text.pack (show a)
  41 instance (Sym_Int r1, Sym_Int r2) => Sym_Int (DupI r1 r2) where
  42         int x = int x `DupI` int x
  43
  44 instance Const_from Text cs => Const_from Text (Proxy Int ': cs) where
  45         const_from "Int" k = k (ConstZ kind)
  46         const_from s k = const_from s $ k . ConstS
  47 instance Show_Const cs => Show_Const (Proxy Int ': cs) where
  48         show_const ConstZ{} = "Int"
  49         show_const (ConstS c) = show_const c
  50
  51 instance -- Proj_ConC
  52  ( Proj_Const cs Int
  53  , Proj_Consts cs (Consts_imported_by Int)
  54  ) => Proj_ConC cs (Proxy Int) where
  55         proj_conC _ (TyConst q :$ TyConst c)
  56          | Just Refl <- eq_skind (kind_of_const c) SKiType
  57          , Just Refl <- proj_const c (Proxy::Proxy Int)
  58          = case () of
  59                  _ | Just Refl <- proj_const q (Proxy::Proxy Bounded)  -> Just Con
  60                    | Just Refl <- proj_const q (Proxy::Proxy Enum)     -> Just Con
  61                    | Just Refl <- proj_const q (Proxy::Proxy Eq)       -> Just Con
  62                    | Just Refl <- proj_const q (Proxy::Proxy Integral) -> Just Con
  63                    | Just Refl <- proj_const q (Proxy::Proxy Num)      -> Just Con
  64                    | Just Refl <- proj_const q (Proxy::Proxy Ord)      -> Just Con
  65                    | Just Refl <- proj_const q (Proxy::Proxy Real)     -> Just Con
  66                  _ -> Nothing
  67         proj_conC _c _q = Nothing
  68 data instance TokenT meta (ts::[*]) (Proxy Int)
  69  = Token_Term_Int Int
  70 deriving instance Eq_Token meta ts => Eq (TokenT meta ts (Proxy Int))
  71 deriving instance Show_Token meta ts => Show (TokenT meta ts (Proxy Int))
  72 instance -- Term_fromI
  73  Inj_Const (Consts_of_Ifaces is) Int =>
  74  Term_fromI is (Proxy Int) where
  75         term_fromI tok _ctx k =
  76                 case tok of
  77                  Token_Term_Int i -> k (ty @Int) $ TermLC $ \_c -> int i