Data.Binary.Put

The Put monad. A monad for efficiently constructing lazy bytestrings.

The Put type

type Put = PutM ()

Put merely lifts Builder into a Writer monad, applied to ().

newtype PutM a

The PutM type. A Writer monad over the efficient Builder monoid.

Constructors

Put

Fields

unPut :: PairS a

Instances

Monad PutM

Functor PutM

Applicative PutM

runPut :: Put -> ByteString

Run the Put monad with a serialiser

runPutM :: PutM a -> (a, ByteString)

Run the Put monad with a serialiser and get its result

putBuilder :: Builder -> Put

execPut :: PutM a -> Builder

Run the Put monad

Flushing the implicit parse state

flush :: Put

Pop the ByteString we have constructed so far, if any, yielding a new chunk in the result ByteString.

Primitives

putWord8 :: Word8 -> Put

Efficiently write a byte into the output buffer

putByteString :: ByteString -> Put

An efficient primitive to write a strict ByteString into the output buffer. It flushes the current buffer, and writes the argument into a new chunk.

putLazyByteString :: ByteString -> Put

Write a lazy ByteString efficiently, simply appending the lazy ByteString chunks to the output buffer

Big-endian primitives

putWord16be :: Word16 -> Put

Write a Word16 in big endian format

putWord32be :: Word32 -> Put

Write a Word32 in big endian format

putWord64be :: Word64 -> Put

Write a Word64 in big endian format

Little-endian primitives

putWord16le :: Word16 -> Put

Write a Word16 in little endian format

putWord32le :: Word32 -> Put

Write a Word32 in little endian format

putWord64le :: Word64 -> Put

Write a Word64 in little endian format

Host-endian, unaligned writes

putWordhost :: Word -> Put

O(1). Write a single native machine word. The word is written in host order, host endian form, for the machine you're on. On a 64 bit machine the Word is an 8 byte value, on a 32 bit machine, 4 bytes. Values written this way are not portable to different endian or word sized machines, without conversion.

putWord16host :: Word16 -> Put

O(1). Write a Word16 in native host order and host endianness. For portability issues see putWordhost.

putWord32host :: Word32 -> Put

O(1). Write a Word32 in native host order and host endianness. For portability issues see putWordhost.

putWord64host :: Word64 -> Put

O(1). Write a Word64 in native host order On a 32 bit machine we write two host order Word32s, in big endian form. For portability issues see putWordhost.