blob: 266d5d98aaf26d6d92978b1d8a599e311436947b (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
|
{-# LANGUAGE Haskell2010 #-}
{-# LANGUAGE TypeFamilies #-}
module T10891 where
import Language.Haskell.TH hiding (Type)
import System.IO
import Data.Kind (Type)
class C a where
f :: a -> Int
class C' a where
type F a :: Type
type F a = a
f' :: a -> Int
class C'' a where
data Fd a :: Type
instance C' Int where
type F Int = Bool
f' = id
instance C'' Int where
data Fd Int = B Bool | C Char
$(return [])
test :: ()
test =
$(let
display :: Name -> Q ()
display q = do
i <- reify q
runIO (hPutStrLn stderr (pprint i) >> hFlush stderr)
in do
display ''C
display ''C'
display ''C''
[| () |])
|
