Language/Symantic/Compiling/Int.hs

   1 {-# LANGUAGE UndecidableInstances #-}
   2 {-# OPTIONS_GHC -fno-warn-orphans #-}
   3 {-# OPTIONS_GHC -fconstraint-solver-iterations=7 #-}
   4 -- | Symantic for 'Int'.
   5 module Language.Symantic.Compiling.Int where
   6
   7 import Data.Proxy
   8 import qualified Data.Text as Text
   9 import Data.Type.Equality ((:~:)(Refl))
  10
  11 import Language.Symantic.Parsing
  12 import Language.Symantic.Typing
  13 import Language.Symantic.Compiling.Term
  14 import Language.Symantic.Interpreting
  15 import Language.Symantic.Transforming.Trans
  16
  17 -- * Class 'Sym_Int'
  18 class Sym_Int term where
  19         int :: Int -> term Int
  20         default int :: Trans t term => Int -> t term Int
  21         int = trans_lift . int
  22
  23 type instance Sym_of_Iface (Proxy Int) = Sym_Int
  24 type instance Consts_of_Iface (Proxy Int) = Proxy Int ': Consts_imported_by Int
  25 type instance Consts_imported_by Int =
  26  [ Proxy Bounded
  27  , Proxy Enum
  28  , Proxy Eq
  29  , Proxy Integral
  30  , Proxy Num
  31  , Proxy Ord
  32  , Proxy Real
  33  , Proxy Show
  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
  45  ( Read_TypeNameR Type_Name cs rs
  46  , Inj_Const cs Int
  47  ) => Read_TypeNameR Type_Name cs (Proxy Int ': rs) where
  48         read_typenameR _cs (Type_Name "Int") k = k (ty @Int)
  49         read_typenameR _rs raw k = read_typenameR (Proxy @rs) raw k
  50 instance Show_Const cs => Show_Const (Proxy Int ': cs) where
  51         show_const ConstZ{} = "Int"
  52         show_const (ConstS c) = show_const c
  53
  54 instance -- Proj_ConC
  55  ( Proj_Const cs Int
  56  , Proj_Consts cs (Consts_imported_by Int)
  57  ) => Proj_ConC cs (Proxy Int) where
  58         proj_conC _ (TyConst q :$ TyConst c)
  59          | Just Refl <- eq_skind (kind_of_const c) SKiType
  60          , Just Refl <- proj_const c (Proxy @Int)
  61          = case () of
  62                  _ | Just Refl <- proj_const q (Proxy @Bounded)  -> Just Con
  63                    | Just Refl <- proj_const q (Proxy @Enum)     -> Just Con
  64                    | Just Refl <- proj_const q (Proxy @Eq)       -> Just Con
  65                    | Just Refl <- proj_const q (Proxy @Integral) -> Just Con
  66                    | Just Refl <- proj_const q (Proxy @Num)      -> Just Con
  67                    | Just Refl <- proj_const q (Proxy @Ord)      -> Just Con
  68                    | Just Refl <- proj_const q (Proxy @Real)     -> Just Con
  69                    | Just Refl <- proj_const q (Proxy @Show)     -> Just Con
  70                  _ -> Nothing
  71         proj_conC _c _q = Nothing
  72 data instance TokenT meta (ts::[*]) (Proxy Int)
  73  = Token_Term_Int Int
  74 deriving instance Eq_Token meta ts => Eq (TokenT meta ts (Proxy Int))
  75 deriving instance Show_Token meta ts => Show (TokenT meta ts (Proxy Int))
  76 instance -- CompileI
  77  Inj_Const (Consts_of_Ifaces is) Int =>
  78  CompileI is (Proxy Int) where
  79         compileI tok _ctx k =
  80                 case tok of
  81                  Token_Term_Int i -> k (ty @Int) $ TermO $ \_c -> int i
  82 instance TokenizeT meta ts (Proxy Int)
  83 instance Gram_Term_AtomsT meta ts (Proxy Int) g