%
-% (c) The GRASP/AQUA Project, Glasgow University, 1997
+% (c) The GRASP/AQUA Project, Glasgow University, 1997-1998
%
\section{Basic ops on packed representations}
import Addr ( Addr(..) )
import ST
import Foreign
+-- ForeignObj is now exported abstractly.
+#if __GLASGOW_HASKELL__ >= 303
+import PrelForeign ( ForeignObj(..) )
+#endif
#if __GLASGOW_HASKELL__ < 301
import ArrBase ( StateAndMutableByteArray#(..),
StateAndByteArray#(..) )
import STBase
-#else
+#elif __GLASGOW_HASKELL__ < 400
import PrelArr ( StateAndMutableByteArray#(..),
StateAndByteArray#(..) )
import PrelST
+#else
+import PrelST
#endif
\end{code}
_ccall_ strlen a >>= \ len@(I# _) ->
return len
)
-
+{-# NOINLINE strLength #-}
\end{code}
Copying a char string prefix into a byte array,
freeze_ps_array :: MutableByteArray s Int -> Int# -> ST s (ByteArray Int)
new_ps_array size = ST $ \ s ->
+#if __GLASGOW_HASKELL__ < 400
case (newCharArray# size s) of { StateAndMutableByteArray# s2# barr# ->
STret s2# (MutableByteArray bot barr#) }
+#else
+ case (newCharArray# size s) of { (# s2#, barr# #) ->
+ (# s2#, MutableByteArray bot barr# #) }
+#endif
where
bot = error "new_ps_array"
write_ps_array (MutableByteArray _ barr#) n ch = ST $ \ s# ->
case writeCharArray# barr# n ch s# of { s2# ->
+#if __GLASGOW_HASKELL__ < 400
STret s2# () }
+#else
+ (# s2#, () #) }
+#endif
-- same as unsafeFreezeByteArray
freeze_ps_array (MutableByteArray _ arr#) len# = ST $ \ s# ->
+#if __GLASGOW_HASKELL__ < 400
case unsafeFreezeByteArray# arr# s# of { StateAndByteArray# s2# frozen# ->
STret s2# (ByteArray (0,I# len#) frozen#) }
+#else
+ case unsafeFreezeByteArray# arr# s# of { (# s2#, frozen# #) ->
+ (# s2#, ByteArray (0,I# len#) frozen# #) }
+#endif
\end{code}