blob: 7ad0ceda1682ae0b7711aa12b44a71e46d8364ba (
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
|
--!!! cc004 -- ccall with synonyms, polymorphic type variables and user type variables.
module Test where
import PreludeGlaIO
-- Since I messed up the handling of polymorphism originally, I'll
-- explicitly test code with UserSysTyVar (ie an explicit polymorphic
-- signature)
foo = _ccall_ f `thenADR` \ a -> returnPrimIO (a + 1)
where
thenADR :: PrimIO a -> (a -> PrimIO b) -> PrimIO b
m `thenADR` k = \ s -> case m s of
(a,t) -> k a t
-- and with a PolySysTyVar (ie no explicit signature)
bar = _ccall_ f `thenADR` \ a -> returnPrimIO (a + 1)
where
-- thenADR :: PrimIO a -> (a -> PrimIO b) -> PrimIO b
m `thenADR` k = \ s -> case m s of
(a,t) -> k a t
-- and with a type synonym
type INT = Int
barfu :: PrimIO INT
barfu = _ccall_ b
|
