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add getMany #17

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11ef4b7
add getMany
imalsogreg May 14, 2014
15bc603
version
imalsogreg May 14, 2014
f4459f4
oops newline
imalsogreg May 14, 2014
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2 changes: 1 addition & 1 deletion pipes-binary.cabal
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Original file line number Diff line number Diff line change
@@ -1,5 +1,5 @@
name: pipes-binary
version: 0.4.0
version: 0.4.1
license: BSD3
license-file: LICENSE
copyright: Copyright (c) Renzo Carbonara 2013-2014
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14 changes: 14 additions & 0 deletions src/Pipes/Binary.hs
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Original file line number Diff line number Diff line change
Expand Up @@ -29,6 +29,7 @@ module Pipes.Binary (
-- ** Explicit 'Get'
, decodeGet
, decodeGetL
, getMany

-- * Types
, DecodingError(..)
Expand Down Expand Up @@ -202,6 +203,19 @@ decodeGetL m = S.StateT (go id (Get.runGetIncremental m))
Right (bs, p1) -> go (diffP . (yield bs >>)) (k (Just bs)) p1
{-# INLINABLE decodeGetL #-}

-- |Produce values from a ByteString, given an explicit Get monad
getMany
:: (Monad m) => Get a -> Producer ByteString m r -> Producer a m DecodingError
getMany getA = go
where go p = do
(x,p') <- lift $ S.runStateT (decodeGet getA) p
case x of
Left err -> return err
Right a -> do
yield a
go p'
{-# INLINABLE getMany #-}

--------------------------------------------------------------------------------

-- | A 'Get' decoding error, as provided by 'Get.Fail'.
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