lazyThenUs, lazyMapUs,
mkSplitUniqSupply,
- splitUniqSupply
+ splitUniqSupply, listSplitUniqSupply
) where
#include "HsVersions.h"
mkSplitUniqSupply :: Char -> IO UniqSupply
splitUniqSupply :: UniqSupply -> (UniqSupply, UniqSupply)
+listSplitUniqSupply :: UniqSupply -> [UniqSupply] -- Infinite
uniqFromSupply :: UniqSupply -> Unique
uniqsFromSupply :: UniqSupply -> [Unique] -- Infinite
\end{code}
\begin{code}
mkSplitUniqSupply (C# c#)
= let
-#if __GLASGOW_HASKELL__ >= 503
mask# = (i2w (ord# c#)) `uncheckedShiftL#` (i2w_s 24#)
-#else
- mask# = (i2w (ord# c#)) `shiftL#` (i2w_s 24#)
-#endif
-- here comes THE MAGIC:
-- This is one of the most hammered bits in the whole compiler
foreign import ccall unsafe "genSymZh" genSymZh :: IO Int
splitUniqSupply (MkSplitUniqSupply _ s1 s2) = (s1, s2)
+listSplitUniqSupply (MkSplitUniqSupply _ s1 s2) = s1 : listSplitUniqSupply s2
\end{code}
\begin{code}