Codecs which currently return boxed readers and writers could use an associated type on the trait instead. Boxed dyn trait objects would probably still be needed for e.g. impl ABCodec for CodecChain and impl BBCodec for &[BBCodec], but it could reduce the number of required boxes. Boxed objects may also still be necessary for partial IO
(en|de)code_into
Where arrays need to be passed around, the output array could also be given (as a mutable view). This would itself be the decoded representation, and reduce allocations/ clones.
Partial (en|de)code
We have partial IO at the store level; codec level is necessary to make sharding worthwhile.
Associated types
Codecs which currently return boxed readers and writers could use an associated type on the trait instead. Boxed dyn trait objects would probably still be needed for e.g.
impl ABCodec for CodecChainandimpl BBCodec for &[BBCodec], but it could reduce the number of required boxes. Boxed objects may also still be necessary for partial IO(en|de)code_intoWhere arrays need to be passed around, the output array could also be given (as a mutable view). This would itself be the decoded representation, and reduce allocations/ clones.
Partial
(en|de)codeWe have partial IO at the store level; codec level is necessary to make sharding worthwhile.