@hackage / dahdit

dahdit

Binary parsing and serialization with integrated size.

(dahs and dits are signal durations in Morse code)

This differs from binary in a few ways:

• It supports parsing from (or rendering into) pinned or unpinned memory.
• It uses ByteArray internally to avoid generating new or retaining references to old pinned memory.
• Examining Put can yield required byte size without serializing.
• Derivation uses via and not anyclass for better control of derived instances.
• Types implementing Binary can implement byteSized for size calculation (or it will reflect on put).
• Known-statically-sized types can implement StaticByteSized for size speedups.
• Provides several additional types representing fixed-length strings or sequences (using TypeLits).

Static sizes

You may find it necessary to discharge simple KnownNat constraints with a plugin like ghc-typelits-knownnat. Add that package to your dependencies and add this to the top of the necessary files:

{-# OPTIONS_GHC -fplugin GHC.TypeLits.KnownNat.Solver #-}