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CHANGELOG.md

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Changelog

All notable changes to this crate are documented in this file.

The format is based on Keep a Changelog, and this crate adheres to Semantic Versioning.

[3.6.4] - 2023-07-14

Added

  • Now #[derive(Encode)] implements the size_hint() method for structures and enumerations. This improves the performance of the encode() method by pre-allocating memory.

[3.6.3] - 2023-07-03

Fixed

  • Provide full path to elements from ::core in Decode derivation (caused compilation error when no-implicit-prelude was used).

[3.6.2] - 2023-06-30

Fixed

  • Trying to deserialize a boxed newtype containing a big array won't overflow the stack anymore.

[3.6.1] - 2023-06-19

Fixed

  • Deriving Decode will not trigger clippy warnings anymore

[3.6.0] - 2023-06-15

Added

  • Added Decode::decode_into to allow deserializing into unitialized memory.
  • Added a DecodeFinished type to be used with Decode::decode_into.

Fixed

  • Trying to deserialize a big boxed array (e.g. Box<[u8; 1024 * 1024 * 1024]>) won't overflow the stack anymore.
  • Trying to deserialize big nested enums with many variants won't overflow the stack anymore.
  • Elements of partially read arrays will now be properly dropped if the whole array wasn't decoded.

Changed

  • The derive macros will now be reexported only when the derive feature is enabled, as opposed to how it was previously where enabling parity-scale-codec-derive would suffice.
  • The max-encoded-len feature won't automatically enable the derive macros nor pull in the parity-scale-codec-derive dependency.

[3.5.0]

Added

  • ConstEncodedLen marker trait for types that implement MaxEncodedLen. #428

[3.4.0]

This release renders the full feature defunct. The implementations guarded behind this feature are now always provided.

Changes

  • All implementations guarded behind full are not unconditionally implemented.

[3.3.0]

This release exports decode_vec_with_len to support custom decoding of Vecs.

Added

  • Export decode_vec_with_len.

[3.2.1] - 2022-09-14

This release fixes compilation on no-std envs.

Changed

  • Use core RangeInclusive instead of std #378

[3.2.0] - 2022-09-13

This release (specifically #375) bumps the MSRV to 1.60.0 as it depends on the Cargo.toml weak dependency feature.

Changed

  • Don't include bitvec with std feature unless asked for explicitly. #375
  • Implement MaxEncodedLen on more core lib types. #350

[3.1.5] - 2022-06-11

A quick release to fix an issue introduced in 3.1.4 that broke compiling on no-std.

Changed

[3.1.3] - 2022-06-10

Changed

  • Impl MaxEncodedLen for Box<T>. #349
  • Add decode_from_bytes. #342

[3.1.2] - 2022-03-22

Be aware that version 3.0.0. up to 3.1.1 contained some bugs in the BitVec encoder that could lead to an invalid encoding. Thus, we yanked these crate version and it is advised to upgrade to 3.1.2. Any release before 3.0.0 wasn't affected by this bug.

Changed

  • Optimised the Decode::decode for [T; N] by @xgreenx. #299
  • Add some doc for the derive macro by @thiolliere. #301
  • Add bytes::Bytes implementation by @vorot93. #309
  • Upgrade to BitVec 1.0 by @bkchr. #311
  • BREAKING CHANGE: DecodeLimit and DecodeAll extensions now advance input by @wigy-opensource-developer. #314
  • Make CompactRef public by @andrenth. #321
  • Add ability to re-export parity-scale-codec crate by @gshep. #325
  • BitVec: Improve the encoding and consolidate the implementations by @bkchr. #327
  • Fix crate access by putting a leading :: by @bkchr. #328

[3.0.0] - 2022-02-02

Fix

  • Optimised the Decode::decode for [T; N] #299

Changed

  • Migrated to 2021 edition, enforcing MSRV of 1.56.1. #298
  • Upgrade to BitVec 1.0 #311
  • DecodeLimit and DecodeAll extensions now advance input #314

Added

  • Add bytes::Bytes implementation #309

[2.3.1] - 2021-09-28

Fix

  • Improve macro hygiene of Encode and Decode proc. macro expansions. (#291, #293)

[2.3.0] - 2021-09-11

Added

  • decode_and_advance_with_depth_limit to the DecodeLimit trait. This allows advancing the cursor while decoding the input. PR #286

[2.2.0] - 2021-07-02

Added

  • Add support for custom where bounds codec(mel_bound(T: MaxEncodedLen)) when deriving the traits. PR #279
  • MaxEncodedLen trait for items that have a statically known maximum encoded size. (#268)
  • #[codec(crate = <path>)] top-level attribute to be used with the new MaxEncodedLen trait, which allows to specify a different path to the crate that contains the MaxEncodedLen trait. Useful when using generating a type through a macro and this type should implement MaxEncodedLen and the final crate doesn't have parity-scale-codec as dependency.

[2.1.3] - 2021-06-14

Changed

  • Lint attributes now pass through to the derived impls of Encode, Decode and CompactAs. PR #272

[2.1.0] - 2021-04-06

Fix

  • Add support for custom where bounds codec(encode_bound(T: Encode)) and codec(decode_bound(T: Decode)) when deriving the traits. Pr #262
  • Switch to const generics for array implementations. Pr #261

[2.0.1] - 2021-02-26

Fix

  • Fix type inference issue in Decode derive macro. Pr #254

[2.0.0] - 2021-01-26

Added

  • Decode::skip allows to skip some encoded types. Pr #243
  • Decode::encoded_fixed_size allows to get the fixed encoded size of a type. PR #243
  • Error now contains a chain of causes. This full error description can also be activated on no std using the feature chain-error. PR #242
  • Encode::encoded_size allows to get the encoded size of a type more efficiently. PR #245

Changed

  • CompactAs::decode_from now returns result. This allow for decoding to fail from their compact form.
  • derive macro use literal index e.g. #[codec(index = 15)] instead of #[codec(index = "15")]
  • Version of crates bitvec and generic-array is updated.
  • Encode::encode_to now bounds the generic W: Output + ?Sized instead of W: Output.
  • Output can now be used as a trait object.

Removed

  • EncodeAppend::append is removed in favor of EncodeAppend::append_or_new.
  • Output::push is removed in favor of Encode::encode_to.
  • Some bounds on HasCompact::Type are removed.
  • Error::what is removed in favor of Error::to_string (implemented through trait Display).
  • Error::description is removed in favor of Error::to_string (implemented through trait Display).