Language/Symantic/Compiling/Integer.hs

   1 {-# LANGUAGE UndecidableInstances #-}
   2 {-# OPTIONS_GHC -fno-warn-orphans #-}
   3 {-# OPTIONS_GHC -fconstraint-solver-iterations=6 #-}
   4 -- | Symantic for 'Integer'.
   5 module Language.Symantic.Compiling.Integer 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_Integer'
  19 class Sym_Integer term where
  20         integer :: Integer -> term Integer
  21         default integer :: Trans t term => Integer -> t term Integer
  22         integer = trans_lift . integer
  23
  24 type instance Sym_of_Iface (Proxy Integer) = Sym_Integer
  25 type instance Consts_of_Iface (Proxy Integer) = Proxy Integer ': Consts_imported_by Integer
  26 type instance Consts_imported_by Integer =
  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_Integer HostI where
  37         integer = HostI
  38 instance Sym_Integer TextI where
  39         integer a = TextI $ \_p _v ->
  40                 Text.pack (show a)
  41 instance (Sym_Integer r1, Sym_Integer r2) => Sym_Integer (DupI r1 r2) where
  42         integer x = integer x `DupI` integer x
  43
  44 instance
  45  ( Read_TypeNameR Text cs rs
  46  , Inj_Const cs Integer
  47  ) => Read_TypeNameR Text cs (Proxy Integer ': rs) where
  48         read_typenameR _cs "Integer" k = k (ty @Integer)
  49         read_typenameR _rs raw k = read_typenameR (Proxy @rs) raw k
  50 instance Show_Const cs => Show_Const (Proxy Integer ': cs) where
  51         show_const ConstZ{} = "Integer"
  52         show_const (ConstS c) = show_const c
  53
  54 instance -- Proj_ConC
  55  ( Proj_Const cs Integer
  56  , Proj_Consts cs (Consts_imported_by Integer)
  57  ) => Proj_ConC cs (Proxy Integer) 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::Proxy Integer)
  61          = case () of
  62                  _ | Just Refl <- proj_const q (Proxy::Proxy Enum)     -> Just Con
  63                    | Just Refl <- proj_const q (Proxy::Proxy Eq)       -> Just Con
  64                    | Just Refl <- proj_const q (Proxy::Proxy Integral) -> Just Con
  65                    | Just Refl <- proj_const q (Proxy::Proxy Num)      -> Just Con
  66                    | Just Refl <- proj_const q (Proxy::Proxy Ord)      -> Just Con
  67                    | Just Refl <- proj_const q (Proxy::Proxy Real)     -> Just Con
  68                    | Just Refl <- proj_const q (Proxy::Proxy Show)     -> Just Con
  69                  _ -> Nothing
  70         proj_conC _c _q = Nothing
  71 data instance TokenT meta (ts::[*]) (Proxy Integer)
  72  = Token_Term_Integer Integer
  73 deriving instance Eq_Token meta ts => Eq (TokenT meta ts (Proxy Integer))
  74 deriving instance Show_Token meta ts => Show (TokenT meta ts (Proxy Integer))
  75 instance -- CompileI
  76  Inj_Const (Consts_of_Ifaces is) Integer =>
  77  CompileI is (Proxy Integer) where
  78         compileI tok _ctx k =
  79                 case tok of
  80                  Token_Term_Integer i -> k (ty @Integer) $ TermO $ \_c -> integer i