-- Stability : provisional
-- Portability : portable
--
--- Mapping of C types to corresponding Haskell types. A cool hack...
+-- Mapping of C types to corresponding Haskell types.
--
-----------------------------------------------------------------------------
module Foreign.C.Types
+#ifndef __NHC__
( -- Integral types, instances of: Eq, Ord, Num, Read, Show, Enum,
-- Typeable, Storable, Bounded, Real, Integral, Bits
- CChar(..), CSChar(..), CUChar(..)
- , CShort(..), CUShort(..), CInt(..), CUInt(..)
- , CLong(..), CULong(..)
-#ifndef __HUGS__
- , CLLong(..), CULLong(..)
-#endif
+ CChar, CSChar, CUChar
+ , CShort, CUShort, CInt, CUInt
+ , CLong, CULong
+ , CPtrdiff, CSize, CWchar, CSigAtomic
+ , CLLong, CULLong
+ -- Numeric types, instances of: Eq, Ord, Num, Read, Show, Enum,
+ -- Typeable, Storable
+ , CClock, CTime
-- Floating types, instances of: Eq, Ord, Num, Read, Show, Enum,
-- Typeable, Storable, Real, Fractional, Floating, RealFrac,
-- RealFloat
- , CFloat(..), CDouble(..), CLDouble(..)
+ , CFloat, CDouble, CLDouble
+#else
+ ( -- Exported non-abstractly in nhc98 to fix an interface file problem.
+ CChar(..), CSChar(..), CUChar(..)
+ , CShort(..), CUShort(..), CInt(..), CUInt(..)
+ , CLong(..), CULong(..)
+ , CPtrdiff(..), CSize(..), CWchar(..), CSigAtomic(..)
+ , CLLong(..), CULLong(..)
+ , CClock(..), CTime(..)
+ , CFloat(..), CDouble(..), CLDouble(..)
+#endif
+
+ -- Instances of: Eq and Storable
+ , CFile, CFpos, CJmpBuf
) where
+#ifdef __NHC__
+import NHC.FFI
+ ( CChar(..), CSChar(..), CUChar(..)
+ , CShort(..), CUShort(..), CInt(..), CUInt(..)
+ , CLong(..), CULong(..), CLLong(..), CULLong(..)
+ , CPtrdiff(..), CSize(..), CWchar(..), CSigAtomic(..)
+ , CClock(..), CTime(..)
+ , CFloat(..), CDouble(..), CLDouble(..)
+ , CFile, CFpos, CJmpBuf
+ , Storable(..)
+ )
+#else
+
+import Foreign.Storable
import Data.Bits ( Bits(..) )
import Data.Int ( Int8, Int16, Int32, Int64 )
import Data.Word ( Word8, Word16, Word32, Word64 )
-import Data.Dynamic
+import Data.Typeable
#ifdef __GLASGOW_HASKELL__
import GHC.Base
import GHC.Show
import GHC.Read
import GHC.Num
+#else
+import Control.Monad
+import Foreign.Ptr
#endif
-#include "Dynamic.h"
+#include "Typeable.h"
#include "CTypes.h"
INTEGRAL_TYPE(CChar,tyConCChar,"CChar",HTYPE_CHAR)
INTEGRAL_TYPE(CLong,tyConCLong,"CLong",HTYPE_LONG)
INTEGRAL_TYPE(CULong,tyConCULong,"CULong",HTYPE_UNSIGNED_LONG)
-#ifndef __HUGS__
INTEGRAL_TYPE(CLLong,tyConCLLong,"CLLong",HTYPE_LONG_LONG)
INTEGRAL_TYPE(CULLong,tyConCULLong,"CULLong",HTYPE_UNSIGNED_LONG_LONG)
-#endif
{-# RULES
"fromIntegral/a->CChar" fromIntegral = \x -> CChar (fromIntegral x)
-- HACK: Currently no long double in the FFI, so we simply re-use double
FLOATING_TYPE(CLDouble,tyConCLDouble,"CLDouble",HTYPE_DOUBLE)
+{-# RULES
+"realToFrac/a->CFloat" realToFrac = \x -> CFloat (realToFrac x)
+"realToFrac/a->CDouble" realToFrac = \x -> CDouble (realToFrac x)
+"realToFrac/a->CLDouble" realToFrac = \x -> CLDouble (realToFrac x)
+
+"realToFrac/CFloat->a" realToFrac = \(CFloat x) -> realToFrac x
+"realToFrac/CDouble->a" realToFrac = \(CDouble x) -> realToFrac x
+"realToFrac/CLDouble->a" realToFrac = \(CLDouble x) -> realToFrac x
+ #-}
+
+INTEGRAL_TYPE(CPtrdiff,tyConCPtrdiff,"CPtrdiff",HTYPE_PTRDIFF_T)
+INTEGRAL_TYPE(CSize,tyConCSize,"CSize",HTYPE_SIZE_T)
+INTEGRAL_TYPE(CWchar,tyConCWchar,"CWchar",HTYPE_WCHAR_T)
+INTEGRAL_TYPE(CSigAtomic,tyConCSigAtomic,"CSigAtomic",HTYPE_SIG_ATOMIC_T)
+
+{-# RULES
+"fromIntegral/a->CPtrdiff" fromIntegral = \x -> CPtrdiff (fromIntegral x)
+"fromIntegral/a->CSize" fromIntegral = \x -> CSize (fromIntegral x)
+"fromIntegral/a->CWchar" fromIntegral = \x -> CWchar (fromIntegral x)
+"fromIntegral/a->CSigAtomic" fromIntegral = \x -> CSigAtomic (fromIntegral x)
+
+"fromIntegral/CPtrdiff->a" fromIntegral = \(CPtrdiff x) -> fromIntegral x
+"fromIntegral/CSize->a" fromIntegral = \(CSize x) -> fromIntegral x
+"fromIntegral/CWchar->a" fromIntegral = \(CWchar x) -> fromIntegral x
+"fromIntegral/CSigAtomic->a" fromIntegral = \(CSigAtomic x) -> fromIntegral x
+ #-}
+
+ARITHMETIC_TYPE(CClock,tyConCClock,"CClock",HTYPE_CLOCK_T)
+ARITHMETIC_TYPE(CTime,tyConCTime,"CTime",HTYPE_TIME_T)
+
+-- FIXME: Implement and provide instances for Eq and Storable
+data CFile = CFile
+data CFpos = CFpos
+data CJmpBuf = CJmpBuf
+
+-- C99 types which are still missing include:
+-- intptr_t, uintptr_t, intmax_t, uintmax_t, wint_t, wctrans_t, wctype_t
+
+#endif