-- Copyright 2020 Google LLC
--
-- Licensed under the Apache License, Version 2.0 (the "License");
-- you may not use this file except in compliance with the License.
-- You may obtain a copy of the License at
--
--      http://www.apache.org/licenses/LICENSE-2.0
--
-- Unless required by applicable law or agreed to in writing, software
-- distributed under the License is distributed on an "AS IS" BASIS,
-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-- See the License for the specific language governing permissions and
-- limitations under the License.

{-# LANGUAGE TemplateHaskell #-}
module Main (main) where

import Control.Monad (guard)
import Foo (foo)
import Language.Haskell.TH

result :: Integer
-- Uses the FFI within TemplateHaskell:
result = $(litE $ IntegerL $ fromIntegral $ foo 3)

main :: IO ()
main = guard (15 == result)
