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{-# LANGUAGE GADTs #-}
{-# LANGUAGE TypeOperators #-}
{-# LANGUAGE FlexibleInstances #-}
{-# LANGUAGE UndecidableInstances #-}
{-# LANGUAGE MultiParamTypeClasses #-}

module Feldspar.Compiler.Imperative.FromCore.FFI where

import Language.Syntactic

import Feldspar.Core.Types (Type)
import Feldspar.Core.Interpretation
import Feldspar.Core.Constructs.FFI

import Feldspar.Compiler.Imperative.Frontend
import Feldspar.Compiler.Imperative.FromCore.Interpretation

instance (Compile dom dom) => Compile (FFI :|| Type) dom
  where
    compileExprSym (C' (ForeignImport name _)) info args = do
        argExprs <- sequence $ listArgs compileExpr args
        return $ fun (compileTypeRep (infoType info) (infoSize info)) name argExprs