Add Haskell types for C types useconds_t and suseconds_t, which are respectively...

[ghc-base.git] / Foreign / C / Types.hs

diff --git a/Foreign/C/Types.hs b/Foreign/C/Types.hs
index 44101fc..f6bdec1 100644 (file)
--- a/Foreign/C/Types.hs
+++ b/Foreign/C/Types.hs
@@ -1,7 +1,15 @@
-{-# OPTIONS_GHC -XNoImplicitPrelude #-}
+{-# 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
@@ -41,7 +49,15 @@ module Foreign.C.Types
           -- foreign types, and are instances of
           -- 'Prelude.Eq', 'Prelude.Ord', 'Prelude.Num', 'Prelude.Read',
           -- 'Prelude.Show', 'Prelude.Enum', 'Typeable' and 'Storable'.
-        , CClock,   CTime
+        , 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
@@ -50,7 +66,11 @@ module Foreign.C.Types
           -- 'Prelude.Show', 'Prelude.Enum', 'Typeable', 'Storable',
           -- 'Prelude.Real', 'Prelude.Fractional', 'Prelude.Floating',
           -- 'Prelude.RealFrac' and 'Prelude.RealFloat'.
-        , CFloat,  CDouble, CLDouble
+        , 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(..)
@@ -58,8 +78,9 @@ module Foreign.C.Types
         , CLong(..),    CULong(..)
         , CPtrdiff(..), CSize(..),   CWchar(..), CSigAtomic(..)
         , CLLong(..),   CULLong(..)
-        , CClock(..),   CTime(..)
+        , CClock(..),   CTime(..),   CUSeconds(..), CSUSeconds(..)
         , CFloat(..),   CDouble(..), CLDouble(..)
+        , CIntPtr(..), CUIntPtr(..), CIntMax(..), CUIntMax(..)
 #endif
           -- ** Other types
 
@@ -73,7 +94,7 @@ 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 (Typeable(typeOf), TyCon, mkTyCon, mkTyConApp)
+import {-# SOURCE #-} Data.Typeable
 
 #ifdef __GLASGOW_HASKELL__
 import GHC.Base
@@ -151,20 +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.
@@ -190,11 +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.
@@ -269,8 +295,9 @@ import NHC.FFI
   , 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(..)
   )
@@ -308,5 +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