git-annex/Utility/Bloom.hs

60 lines
1.2 KiB
Haskell

{- bloomfilter compatability wrapper
-
- Copyright 2014 Joey Hess <id@joeyh.name>
-
- License: BSD-2-clause
-}
{-# LANGUAGE CPP #-}
module Utility.Bloom (
Bloom,
safeSuggestSizing,
Hashable,
cheapHashes,
notElemB,
newMB,
insertMB,
unsafeFreezeMB,
) where
#if MIN_VERSION_bloomfilter(2,0,0)
import qualified Data.BloomFilter.Mutable as MBloom
import qualified Data.BloomFilter as Bloom
#else
import qualified Data.BloomFilter as Bloom
#endif
import Data.BloomFilter.Easy (safeSuggestSizing, Bloom)
import Data.BloomFilter.Hash (Hashable, cheapHashes)
import Control.Monad.ST (ST)
#if MIN_VERSION_bloomfilter(2,0,0)
notElemB :: a -> Bloom a -> Bool
notElemB = Bloom.notElem
newMB :: (a -> [Bloom.Hash]) -> Int -> ST s (MBloom.MBloom s a)
newMB = MBloom.new
insertMB :: MBloom.MBloom s a -> a -> ST s ()
insertMB = MBloom.insert
unsafeFreezeMB :: MBloom.MBloom s a -> ST s (Bloom a)
unsafeFreezeMB = Bloom.unsafeFreeze
#else
notElemB :: a -> Bloom a -> Bool
notElemB = Bloom.notElemB
newMB :: (a -> [Bloom.Hash]) -> Int -> ST s (Bloom.MBloom s a)
newMB = Bloom.newMB
insertMB :: Bloom.MBloom s a -> a -> ST s ()
insertMB = Bloom.insertMB
unsafeFreezeMB :: Bloom.MBloom s a -> ST s (Bloom a)
unsafeFreezeMB = Bloom.unsafeFreezeMB
#endif