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{-# LANGUAGE ForeignFunctionInterface #-}
{-# LANGUAGE TemplateHaskell #-}
module Data.Array.Nested.Internal.Arith.Foreign where

import Control.Monad
import Data.Int
import Data.Maybe
import Foreign.Ptr
import Language.Haskell.TH

import Data.Array.Nested.Internal.Arith.Lists


$(fmap concat . forM typesList $ \arithtype -> do
    let ttyp = conT (atType arithtype)
    fmap concat . forM binopsList $ \arithop -> do
      let base = aboName arithop ++ "_" ++ atCName arithtype
      sequence $ catMaybes
        [Just (ForeignD . ImportF CCall Unsafe ("oxarop_" ++ base ++ "_sv") (mkName ("c_" ++ base ++ "_sv")) <$>
                 [t| Int64 -> Ptr $ttyp -> $ttyp -> Ptr $ttyp -> IO () |])
        ,Just (ForeignD . ImportF CCall Unsafe ("oxarop_" ++ base ++ "_vv") (mkName ("c_" ++ base ++ "_vv")) <$>
                 [t| Int64 -> Ptr $ttyp -> Ptr $ttyp -> Ptr $ttyp -> IO () |])
        ,guard (aboComm arithop == NonComm) >>
           Just (ForeignD . ImportF CCall Unsafe ("oxarop_" ++ base ++ "_vs") (mkName ("c_" ++ base ++ "_vs")) <$>
                   [t| Int64 -> Ptr $ttyp -> Ptr $ttyp -> $ttyp -> IO () |])
        ])

$(fmap concat . forM typesList $ \arithtype -> do
    let ttyp = conT (atType arithtype)
    forM unopsList $ \arithop -> do
      let base = auoName arithop ++ "_" ++ atCName arithtype
      ForeignD . ImportF CCall Unsafe ("oxarop_" ++ base) (mkName ("c_" ++ base)) <$>
        [t| Int64 -> Ptr $ttyp -> Ptr $ttyp -> IO () |])

$(fmap concat . forM typesList $ \arithtype -> do
    let ttyp = conT (atType arithtype)
    forM redopsList $ \redop -> do
      let base = aroName redop ++ "_" ++ atCName arithtype
      ForeignD . ImportF CCall Unsafe ("oxarop_" ++ base) (mkName ("c_" ++ base)) <$>
        [t| Int64 -> Ptr Int64 -> Ptr Int64 -> Ptr $ttyp -> Ptr $ttyp -> IO () |])