serde support

[zhangsoledad]

Some design is needed,
to be as generic as possible while still meeting existing requirements https://github.com/nervosnetwork/ckb/blob/develop/util/jsonrpc-types/src/bytes.rs.
Support configuration 0x-prefix, case-sensitive, bytes/Vec, etc.

[eval-exec]

proposal

Inspired by serde-hex, I want to make faster-hex cooperate with serde in such usages:

// will get 0x prefixed, lower case hex string, like: "0x01020a0b"
struct Foo {
  #[serde(with = "faster_hex::SerHex::<StrictPfx>")]
  bar: Vec<u8>
}

// will get no 0x prefixed, lower case hex string, like: "01020a0b"
struct Foo {
  #[serde(with = "faster_hex::SerHex::<Strict>")]
  bar: Vec<u8>
}

// will get no 0x prefixed, upper case hex string, like: "01020A0B"
struct Foo {
  #[serde(with = "faster_hex::SerHex::<StrictCap>")]
  bar: Vec<u8>
}

// will 0x prefixed, upper case hex string, like: "0x01020A0B"
struct Foo {
  #[serde(with = "faster_hex::SerHex::<StrictPfxCap>")]
  bar: Vec<u8>
}

I want add two features to faster-hex

feature serde

This feature allow serde to de/serialize Vec<u8> field.

feature serde_bytes

This feature will depend on bytes crate, and allow serde to de/serialize Bytes field.

[SuperFluffy]

Found this feature and wanted to use it, but it's not yet released crates.io. :( Do you have plans to cut a new release?

[eval-exec]

@SuperFluffy Yes, future release planned.