[project @ 2002-09-04 16:05:29 by simonmar]
[packages/old-time.git] / Foreign / C / Types.hs
1 {-# OPTIONS -fno-implicit-prelude #-}
2 -----------------------------------------------------------------------------
3 -- |
4 -- Module : Foreign.C.Types
5 -- Copyright : (c) The FFI task force 2001
6 -- License : BSD-style (see the file libraries/base/LICENSE)
7 --
8 -- Maintainer : ffi@haskell.org
9 -- Stability : provisional
10 -- Portability : portable
11 --
12 -- Mapping of C types to corresponding Haskell types. A cool hack...
13 --
14 -----------------------------------------------------------------------------
15
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(..)
22 , CPtrdiff(..), CSize(..), CWchar(..), CSigAtomic(..)
23 #ifndef __HUGS__
24 , CLLong(..), CULLong(..)
25 #endif
26 -- Numeric types, instances of: Eq, Ord, Num, Read, Show, Enum,
27 -- Typeable, Storable
28 , CClock(..), CTime(..)
29
30 -- Floating types, instances of: Eq, Ord, Num, Read, Show, Enum,
31 -- Typeable, Storable, Real, Fractional, Floating, RealFrac,
32 -- RealFloat
33 , CFloat(..), CDouble(..), CLDouble(..)
34
35 -- Instances of: Eq and Storable
36 , CFile, CFpos, CJmpBuf
37 ) where
38
39 import Foreign.C.TypesISO
40 import Foreign.Storable
41 import Data.Bits ( Bits(..) )
42 import Data.Int ( Int8, Int16, Int32, Int64 )
43 import Data.Word ( Word8, Word16, Word32, Word64 )
44 import Data.Dynamic
45
46 #ifdef __GLASGOW_HASKELL__
47 import GHC.Base
48 import GHC.Float
49 import GHC.Enum
50 import GHC.Real
51 import GHC.Show
52 import GHC.Read
53 import GHC.Num
54 #endif
55
56 #include "Dynamic.h"
57 #include "CTypes.h"
58
59 INTEGRAL_TYPE(CChar,tyConCChar,"CChar",HTYPE_CHAR)
60 INTEGRAL_TYPE(CSChar,tyConCSChar,"CSChar",HTYPE_SIGNED_CHAR)
61 INTEGRAL_TYPE(CUChar,tyConCUChar,"CUChar",HTYPE_UNSIGNED_CHAR)
62
63 INTEGRAL_TYPE(CShort,tyConCShort,"CShort",HTYPE_SHORT)
64 INTEGRAL_TYPE(CUShort,tyConCUShort,"CUShort",HTYPE_UNSIGNED_SHORT)
65
66 INTEGRAL_TYPE(CInt,tyConCInt,"CInt",HTYPE_INT)
67 INTEGRAL_TYPE(CUInt,tyConCUInt,"CUInt",HTYPE_UNSIGNED_INT)
68
69 INTEGRAL_TYPE(CLong,tyConCLong,"CLong",HTYPE_LONG)
70 INTEGRAL_TYPE(CULong,tyConCULong,"CULong",HTYPE_UNSIGNED_LONG)
71
72 #ifndef __HUGS__
73 INTEGRAL_TYPE(CLLong,tyConCLLong,"CLLong",HTYPE_LONG_LONG)
74 INTEGRAL_TYPE(CULLong,tyConCULLong,"CULLong",HTYPE_UNSIGNED_LONG_LONG)
75 #endif
76
77 {-# RULES
78 "fromIntegral/a->CChar" fromIntegral = \x -> CChar (fromIntegral x)
79 "fromIntegral/a->CSChar" fromIntegral = \x -> CSChar (fromIntegral x)
80 "fromIntegral/a->CUChar" fromIntegral = \x -> CUChar (fromIntegral x)
81 "fromIntegral/a->CShort" fromIntegral = \x -> CShort (fromIntegral x)
82 "fromIntegral/a->CUShort" fromIntegral = \x -> CUShort (fromIntegral x)
83 "fromIntegral/a->CInt" fromIntegral = \x -> CInt (fromIntegral x)
84 "fromIntegral/a->CUInt" fromIntegral = \x -> CUInt (fromIntegral x)
85 "fromIntegral/a->CLong" fromIntegral = \x -> CLong (fromIntegral x)
86 "fromIntegral/a->CULong" fromIntegral = \x -> CULong (fromIntegral x)
87 "fromIntegral/a->CLLong" fromIntegral = \x -> CLLong (fromIntegral x)
88 "fromIntegral/a->CULLong" fromIntegral = \x -> CULLong (fromIntegral x)
89
90 "fromIntegral/CChar->a" fromIntegral = \(CChar x) -> fromIntegral x
91 "fromIntegral/CSChar->a" fromIntegral = \(CSChar x) -> fromIntegral x
92 "fromIntegral/CUChar->a" fromIntegral = \(CUChar x) -> fromIntegral x
93 "fromIntegral/CShort->a" fromIntegral = \(CShort x) -> fromIntegral x
94 "fromIntegral/CUShort->a" fromIntegral = \(CUShort x) -> fromIntegral x
95 "fromIntegral/CInt->a" fromIntegral = \(CInt x) -> fromIntegral x
96 "fromIntegral/CUInt->a" fromIntegral = \(CUInt x) -> fromIntegral x
97 "fromIntegral/CLong->a" fromIntegral = \(CLong x) -> fromIntegral x
98 "fromIntegral/CULong->a" fromIntegral = \(CULong x) -> fromIntegral x
99 "fromIntegral/CLLong->a" fromIntegral = \(CLLong x) -> fromIntegral x
100 "fromIntegral/CULLong->a" fromIntegral = \(CULLong x) -> fromIntegral x
101 #-}
102
103 FLOATING_TYPE(CFloat,tyConCFloat,"CFloat",HTYPE_FLOAT)
104 FLOATING_TYPE(CDouble,tyConCDouble,"CDouble",HTYPE_DOUBLE)
105 -- HACK: Currently no long double in the FFI, so we simply re-use double
106 FLOATING_TYPE(CLDouble,tyConCLDouble,"CLDouble",HTYPE_DOUBLE)
107