Crate bytecodec

Expand description

A tiny framework for implementing encoders/decoders of byte-oriented protocols.

§Features

Suited for byte-oriented protocols
Incremental encoding/decoding:
- Encode and Decode traits support incremental encoding and decoding
- The number of bytes consumed in an execution of encode/decode methods can be completely controlled by the caller
- This property makes it easy to implement, for example, multi-stream multiplexing, transmittin rate control and asynchronous I/O
Composable:
- By combining multiple encoders (or decoders), it is easy to build a more complex encoder (or decoder)
- See the examples of EncodeExt and DecodeExt traits
Reduced number of memory copies:
- In design, only two memory copies are required
- Considering in the decode process, one is the copy from the actual stream (e.g., TCP socket) to the decoding buffer, the other one is the copy to construct the item from the buffer.
Supports some serde implemention crates:
- Currently serde_json and bincode are supported (as optional featuers)
- See json_codec and bincode_codec modules
Easily adapt to synchronous I/O, asynchronous I/O, UDP, etc
Trackable errors:
- By using trackable crate, the location where an error occurred can be easily specified
- See EncodeExt::map_err and DecodeExt::map_err methods

bincode_codec: #[cfg(feature = "bincode_codec")] Bincode encoder and decoder that use bincode internally.
bytes: Encoders and decoders for reading/writing byte sequences.
combinator: Encoders and decoders for combination.
fixnum: Encoders and decoders for numbers which have fixed length binary representation.
io: I/O (i.e., Read and Write traits) related module.
io_async: I/O (i.e., Read and Write traits) related module.
json_codec: #[cfg(feature = "json_codec")] JSON encoder and decoder that use serde_json internally.
marker: Marker types.
monolithic: Monolithic encoder and decoder.
null: Null decoder and encoder.
padding: Encoder and decoder for padding bytes.
slice: Slice like types.
tuple: Encoders and decoders for tuples.

Decode: This trait allows for decoding items from a byte sequence incrementally.
DecodeExt: An extension of Decode trait.
Encode: This trait allows for encoding items into a byte sequence incrementally.
EncodeExt: An extension of Encode trait.
SizedEncode: This trait indicates that the encoder always knows the exact bytes required to encode remaining items.
TaggedDecode: This trait allows for decoding tagged items from a byte sequence incrementally.
TryTaggedDecode: This trait allows for decoding known-tagged or unknown-tagged items from a byte sequence incrementally.