-- 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(..)
- , CPtrdiff(..), CSize(..), CWchar(..), CSigAtomic(..)
- , CLLong(..), CULLong(..)
+ 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(..)
+ , 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
+#ifndef __NHC__
-import Foreign.C.TypesISO
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 Foreign.Ptr
#endif
-#include "Dynamic.h"
+#include "Typeable.h"
#include "CTypes.h"
INTEGRAL_TYPE(CChar,tyConCChar,"CChar",HTYPE_CHAR)
-- 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
+
+#else /* __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(..)
+ )
+import Data.Bits
+import NHC.SizedTypes
+
+#define INSTANCE_BITS(T) \
+instance Bits T where { \
+ (T x) .&. (T y) = T (x .&. y) ; \
+ (T x) .|. (T y) = T (x .|. y) ; \
+ (T x) `xor` (T y) = T (x `xor` y) ; \
+ complement (T x) = T (complement x) ; \
+ shift (T x) n = T (shift x n) ; \
+ rotate (T x) n = T (rotate x n) ; \
+ bit n = T (bit n) ; \
+ setBit (T x) n = T (setBit x n) ; \
+ clearBit (T x) n = T (clearBit x n) ; \
+ complementBit (T x) n = T (complementBit x n) ; \
+ testBit (T x) n = testBit x n ; \
+ bitSize (T x) = bitSize x ; \
+ isSigned (T x) = isSigned x }
+
+INSTANCE_BITS(CChar)
+INSTANCE_BITS(CSChar)
+INSTANCE_BITS(CUChar)
+INSTANCE_BITS(CShort)
+INSTANCE_BITS(CUShort)
+INSTANCE_BITS(CInt)
+INSTANCE_BITS(CUInt)
+INSTANCE_BITS(CLong)
+INSTANCE_BITS(CULong)
+INSTANCE_BITS(CLLong)
+INSTANCE_BITS(CULLong)
+INSTANCE_BITS(CPtrdiff)
+INSTANCE_BITS(CWchar)
+INSTANCE_BITS(CSigAtomic)
+INSTANCE_BITS(CSize)
+
#endif
projects / ghc-base.git / blobdiff