X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=Foreign%2FC%2FTypes.hs;h=f6bdec1b6bd1be3ef23fa1e696bab6464db2e9c3;hb=24617fc54416bdb7ec77c63d868a9de7a9ae313b;hp=71ea352f115df02800cb3d3eada6fcabc8317e89;hpb=2fddc81eacdbe2d4a44a26094f050e708dc51ad2;p=ghc-base.git diff --git a/Foreign/C/Types.hs b/Foreign/C/Types.hs index 71ea352..f6bdec1 100644 --- a/Foreign/C/Types.hs +++ b/Foreign/C/Types.hs @@ -1,4 +1,15 @@ -{-# OPTIONS_GHC -fno-implicit-prelude #-} +{-# LANGUAGE CPP + , NoImplicitPrelude + , MagicHash + , GeneralizedNewtypeDeriving + #-} +{-# OPTIONS_GHC -fno-warn-unused-binds #-} +#ifdef __GLASGOW_HASKELL__ +{-# LANGUAGE DeriveDataTypeable, StandaloneDeriving #-} +#endif +-- XXX -fno-warn-unused-binds stops us warning about unused constructors, +-- but really we should just remove them if we don't want them + ----------------------------------------------------------------------------- -- | -- Module : Foreign.C.Types @@ -14,62 +25,75 @@ ----------------------------------------------------------------------------- module Foreign.C.Types - ( -- * Representations of C types + ( -- * Representations of C types #ifndef __NHC__ - -- $ctypes - - -- ** Integral types - -- | These types are are represented as @newtype@s of - -- types in "Data.Int" and "Data.Word", and are instances of - -- 'Prelude.Eq', 'Prelude.Ord', 'Prelude.Num', 'Prelude.Read', - -- 'Prelude.Show', 'Prelude.Enum', 'Typeable', 'Storable', - -- 'Prelude.Bounded', 'Prelude.Real', 'Prelude.Integral' and - -- 'Bits'. - CChar, CSChar, CUChar - , CShort, CUShort, CInt, CUInt - , CLong, CULong - , CPtrdiff, CSize, CWchar, CSigAtomic + -- $ctypes + + -- ** Integral types + -- | These types are are represented as @newtype@s of + -- types in "Data.Int" and "Data.Word", and are instances of + -- 'Prelude.Eq', 'Prelude.Ord', 'Prelude.Num', 'Prelude.Read', + -- 'Prelude.Show', 'Prelude.Enum', 'Typeable', 'Storable', + -- 'Prelude.Bounded', 'Prelude.Real', 'Prelude.Integral' and + -- 'Bits'. + CChar, CSChar, CUChar + , CShort, CUShort, CInt, CUInt + , CLong, CULong + , CPtrdiff, CSize, CWchar, CSigAtomic , CLLong, CULLong - , CIntPtr, CUIntPtr - , CIntMax, CUIntMax - - -- ** Numeric types - -- | These types are are represented as @newtype@s of basic - -- foreign types, and are instances of - -- 'Prelude.Eq', 'Prelude.Ord', 'Prelude.Num', 'Prelude.Read', - -- 'Prelude.Show', 'Prelude.Enum', 'Typeable' and 'Storable'. - , CClock, CTime - - -- ** Floating types - -- | These types are are represented as @newtype@s of - -- 'Prelude.Float' and 'Prelude.Double', and are instances of - -- 'Prelude.Eq', 'Prelude.Ord', 'Prelude.Num', 'Prelude.Read', - -- 'Prelude.Show', 'Prelude.Enum', 'Typeable', 'Storable', - -- 'Prelude.Real', 'Prelude.Fractional', 'Prelude.Floating', - -- 'Prelude.RealFrac' and 'Prelude.RealFloat'. - , CFloat, CDouble, CLDouble + , CIntPtr, CUIntPtr + , CIntMax, CUIntMax + + -- ** Numeric types + -- | These types are are represented as @newtype@s of basic + -- foreign types, and are instances of + -- 'Prelude.Eq', 'Prelude.Ord', 'Prelude.Num', 'Prelude.Read', + -- 'Prelude.Show', 'Prelude.Enum', 'Typeable' and 'Storable'. + , CClock, CTime, CUSeconds, CSUSeconds + + -- extracted from CTime, because we don't want this comment in + -- the Haskell 2010 report: + + -- | To convert 'CTime' to 'Data.Time.UTCTime', use the following formula: + -- + -- > posixSecondsToUTCTime (realToFrac :: POSIXTime) + -- + + -- ** Floating types + -- | These types are are represented as @newtype@s of + -- 'Prelude.Float' and 'Prelude.Double', and are instances of + -- 'Prelude.Eq', 'Prelude.Ord', 'Prelude.Num', 'Prelude.Read', + -- 'Prelude.Show', 'Prelude.Enum', 'Typeable', 'Storable', + -- 'Prelude.Real', 'Prelude.Fractional', 'Prelude.Floating', + -- 'Prelude.RealFrac' and 'Prelude.RealFloat'. + , CFloat, CDouble +-- GHC doesn't support CLDouble yet +#ifndef __GLASGOW_HASKELL__ + , CLDouble +#endif #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(..) + -- 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(..) + , CClock(..), CTime(..), CUSeconds(..), CSUSeconds(..) + , CFloat(..), CDouble(..), CLDouble(..) + , CIntPtr(..), CUIntPtr(..), CIntMax(..), CUIntMax(..) #endif - -- ** Other types + -- ** Other types -- Instances of: Eq and Storable - , CFile, CFpos, CJmpBuf - ) where + , CFile, CFpos, CJmpBuf + ) where #ifndef __NHC__ -import {-# SOURCE #-} Foreign.Storable -import Data.Bits ( Bits(..) ) -import Data.Int ( Int8, Int16, Int32, Int64 ) -import Data.Word ( Word8, Word16, Word32, Word64 ) +import Foreign.Storable +import Data.Bits ( Bits(..) ) +import Data.Int ( Int8, Int16, Int32, Int64 ) +import Data.Word ( Word8, Word16, Word32, Word64 ) import {-# SOURCE #-} Data.Typeable #ifdef __GLASGOW_HASKELL__ @@ -81,11 +105,11 @@ import GHC.Show import GHC.Read import GHC.Num #else -import Control.Monad ( liftM ) +import Control.Monad ( liftM ) #endif #ifdef __HUGS__ -import Hugs.Ptr ( castPtr ) +import Hugs.Ptr ( castPtr ) #endif #include "HsBaseConfig.h" @@ -148,20 +172,25 @@ INTEGRAL_TYPE(CULLong,tyConCULLong,"CULLong",HTYPE_UNSIGNED_LONG_LONG) FLOATING_TYPE(CFloat,tyConCFloat,"CFloat",HTYPE_FLOAT) -- | Haskell type representing the C @double@ type. FLOATING_TYPE(CDouble,tyConCDouble,"CDouble",HTYPE_DOUBLE) +-- GHC doesn't support CLDouble yet +#ifndef __GLASGOW_HASKELL__ -- HACK: Currently no long double in the FFI, so we simply re-use double -- | Haskell type representing the C @long double@ type. FLOATING_TYPE(CLDouble,tyConCLDouble,"CLDouble",HTYPE_DOUBLE) +#endif {-# 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 #-} +-- GHC doesn't support CLDouble yet +-- "realToFrac/a->CLDouble" realToFrac = \x -> CLDouble (realToFrac x) +-- "realToFrac/CLDouble->a" realToFrac = \(CLDouble x) -> realToFrac x + -- | Haskell type representing the C @ptrdiff_t@ type. INTEGRAL_TYPE(CPtrdiff,tyConCPtrdiff,"CPtrdiff",HTYPE_PTRDIFF_T) -- | Haskell type representing the C @size_t@ type. @@ -187,11 +216,11 @@ INTEGRAL_TYPE(CSigAtomic,tyConCSigAtomic,"CSigAtomic",HTYPE_SIG_ATOMIC_T) ARITHMETIC_TYPE(CClock,tyConCClock,"CClock",HTYPE_CLOCK_T) -- | Haskell type representing the C @time_t@ type. -- --- To convert to a @Data.Time.UTCTime@, use the following formula: --- --- > posixSecondsToUTCTime (realToFrac :: POSIXTime) --- ARITHMETIC_TYPE(CTime,tyConCTime,"CTime",HTYPE_TIME_T) +-- | Haskell type representing the C @useconds_t@ type. +ARITHMETIC_TYPE(CUSeconds,tyConCUSeconds,"CUSeconds",HTYPE_USECONDS_T) +-- | Haskell type representing the C @suseconds_t@ type. +ARITHMETIC_TYPE(CSUSeconds,tyConCSUSeconds,"CSUSeconds",HTYPE_SUSECONDS_T) -- FIXME: Implement and provide instances for Eq and Storable -- | Haskell type representing the C @FILE@ type. @@ -259,15 +288,16 @@ representing a C type @t@: -} -#else /* __NHC__ */ +#else /* __NHC__ */ import NHC.FFI ( CChar(..), CSChar(..), CUChar(..) , CShort(..), CUShort(..), CInt(..), CUInt(..) , CLong(..), CULong(..), CLLong(..), CULLong(..) , CPtrdiff(..), CSize(..), CWchar(..), CSigAtomic(..) - , CClock(..), CTime(..) + , CClock(..), CTime(..), CUSeconds(..), CSUSeconds(..) , CFloat(..), CDouble(..), CLDouble(..) + , CIntPtr(..), CUIntPtr(..),CIntMax(..), CUIntMax(..) , CFile, CFpos, CJmpBuf , Storable(..) ) @@ -305,5 +335,9 @@ INSTANCE_BITS(CPtrdiff) INSTANCE_BITS(CWchar) INSTANCE_BITS(CSigAtomic) INSTANCE_BITS(CSize) +INSTANCE_BITS(CIntPtr) +INSTANCE_BITS(CUIntPtr) +INSTANCE_BITS(CIntMax) +INSTANCE_BITS(CUIntMax) #endif