1 {-# OPTIONS -fno-implicit-prelude #-}
2 -----------------------------------------------------------------------------
4 -- Module : Foreign.C.Types
5 -- Copyright : (c) The FFI task force 2001
6 -- License : BSD-style (see the file libraries/base/LICENSE)
8 -- Maintainer : ffi@haskell.org
9 -- Stability : provisional
10 -- Portability : portable
12 -- Mapping of C types to corresponding Haskell types. A cool hack...
14 -----------------------------------------------------------------------------
16 module Foreign.C.Types
17 ( -- Integral types, instances of: Eq, Ord, Num, Read, Show, Enum,
18 -- Typeable, Storable, Bounded, Real, Integral, Bits
19 CChar(..), CSChar(..), CUChar(..)
20 , CShort(..), CUShort(..), CInt(..), CUInt(..)
21 , CLong(..), CULong(..)
23 , CLLong(..), CULLong(..)
26 -- Floating types, instances of: Eq, Ord, Num, Read, Show, Enum,
27 -- Typeable, Storable, Real, Fractional, Floating, RealFrac,
29 , CFloat(..), CDouble(..), CLDouble(..)
32 import Data.Bits ( Bits(..) )
33 import Data.Int ( Int8, Int16, Int32, Int64 )
34 import Data.Word ( Word8, Word16, Word32, Word64 )
37 #ifdef __GLASGOW_HASKELL__
50 INTEGRAL_TYPE(CChar,tyConCChar,"CChar",HTYPE_CHAR)
51 INTEGRAL_TYPE(CSChar,tyConCSChar,"CSChar",HTYPE_SIGNED_CHAR)
52 INTEGRAL_TYPE(CUChar,tyConCUChar,"CUChar",HTYPE_UNSIGNED_CHAR)
54 INTEGRAL_TYPE(CShort,tyConCShort,"CShort",HTYPE_SHORT)
55 INTEGRAL_TYPE(CUShort,tyConCUShort,"CUShort",HTYPE_UNSIGNED_SHORT)
57 INTEGRAL_TYPE(CInt,tyConCInt,"CInt",HTYPE_INT)
58 INTEGRAL_TYPE(CUInt,tyConCUInt,"CUInt",HTYPE_UNSIGNED_INT)
60 INTEGRAL_TYPE(CLong,tyConCLong,"CLong",HTYPE_LONG)
61 INTEGRAL_TYPE(CULong,tyConCULong,"CULong",HTYPE_UNSIGNED_LONG)
64 INTEGRAL_TYPE(CLLong,tyConCLLong,"CLLong",HTYPE_LONG_LONG)
65 INTEGRAL_TYPE(CULLong,tyConCULLong,"CULLong",HTYPE_UNSIGNED_LONG_LONG)
69 "fromIntegral/a->CChar" fromIntegral = \x -> CChar (fromIntegral x)
70 "fromIntegral/a->CSChar" fromIntegral = \x -> CSChar (fromIntegral x)
71 "fromIntegral/a->CUChar" fromIntegral = \x -> CUChar (fromIntegral x)
72 "fromIntegral/a->CShort" fromIntegral = \x -> CShort (fromIntegral x)
73 "fromIntegral/a->CUShort" fromIntegral = \x -> CUShort (fromIntegral x)
74 "fromIntegral/a->CInt" fromIntegral = \x -> CInt (fromIntegral x)
75 "fromIntegral/a->CUInt" fromIntegral = \x -> CUInt (fromIntegral x)
76 "fromIntegral/a->CLong" fromIntegral = \x -> CLong (fromIntegral x)
77 "fromIntegral/a->CULong" fromIntegral = \x -> CULong (fromIntegral x)
78 "fromIntegral/a->CLLong" fromIntegral = \x -> CLLong (fromIntegral x)
79 "fromIntegral/a->CULLong" fromIntegral = \x -> CULLong (fromIntegral x)
81 "fromIntegral/CChar->a" fromIntegral = \(CChar x) -> fromIntegral x
82 "fromIntegral/CSChar->a" fromIntegral = \(CSChar x) -> fromIntegral x
83 "fromIntegral/CUChar->a" fromIntegral = \(CUChar x) -> fromIntegral x
84 "fromIntegral/CShort->a" fromIntegral = \(CShort x) -> fromIntegral x
85 "fromIntegral/CUShort->a" fromIntegral = \(CUShort x) -> fromIntegral x
86 "fromIntegral/CInt->a" fromIntegral = \(CInt x) -> fromIntegral x
87 "fromIntegral/CUInt->a" fromIntegral = \(CUInt x) -> fromIntegral x
88 "fromIntegral/CLong->a" fromIntegral = \(CLong x) -> fromIntegral x
89 "fromIntegral/CULong->a" fromIntegral = \(CULong x) -> fromIntegral x
90 "fromIntegral/CLLong->a" fromIntegral = \(CLLong x) -> fromIntegral x
91 "fromIntegral/CULLong->a" fromIntegral = \(CULLong x) -> fromIntegral x
94 FLOATING_TYPE(CFloat,tyConCFloat,"CFloat",HTYPE_FLOAT)
95 FLOATING_TYPE(CDouble,tyConCDouble,"CDouble",HTYPE_DOUBLE)
96 -- HACK: Currently no long double in the FFI, so we simply re-use double
97 FLOATING_TYPE(CLDouble,tyConCLDouble,"CLDouble",HTYPE_DOUBLE)