frame-decode

• When encoding extrinsics, unknown Transaction Extensions that are Option<SomeType> will now be accepted, and encoded as 0u8 (ie the None variant) by default if an extension with the corresponding name is not provided by the user. This allows transaction encoding to succeed in more cases, such as when a bunch of optional extensions exist for a chian, but still allows the user to properly implement and provide those extensions if they wish.

• Fixed: update some Kusama types to fix decode issues (#94).

• Add extrinsic encode methods in frame_decode::extrinsics. This covers encoding v4 and v5 unsigned and signed extrinsics, new traits for providing transaction extensions, encoding v4 and v5 signer payloads and encoding call data.

• Expose the crate::helpers::ToTypeRegistry trait so that inputs to crate::helpers::type_registry_from_metadata can be named. Make it sealed so that others cannot rely on it.

• Add a flag to StorageInfo which can be set in order to tell frame-decode to use the old version of V9 storage hashers when decoding storage keys. We need to manually toggle this flag when using metadata produced by runtimes prior to this change, which altered the storage hashers (and thus their encoding/decoding). Kusama prior to spec version 1032 is one such case when this needs to be toggled.

• Update to scale-info-legacy 0.4.0.
• Tweak AccountId32 types to be unnamed structs rather than tuple types, so that they get a path.
• Add legacy_types::from_bytes to convert provided bytes into a ChainTypeRegistry, negating the need to include serde_yaml or whatever in other crates.

• Add Kusama RC types capable of decoding historic blocks.
• Enforce that type definitions have sane variable names and use snake case rather than camel case for field names. If field names were relied on, then note that some of them will change as a result of this.

• Separate the iterating over entries from the core frame-decode *Info traits; One only needs to implement *Info traits to work with frame-decode; the other traits are convenience traits.
• Make Entry type generic so that it can potentially be used in more places, expose it, and expose concrete versions from each module.
• Expose Kusama RC and AH types (though keep these hidden until the types are more complete).
• Remove helpers::list_storage_entries_any: it was a bit of an anomaly to have this and not a version for any other thing. Better to keep this upstream for now.

• Add map_ids() functions to RuntimeApiInfo, StorageInfo and ViewFunctionInfo to make translating the TypeId parameter simpler. This adds a 'static bound to StorageInfo type IDs, but it is not expected that this will break anything as this is already the case for u32 and LookupName IDs (and is required in many other places).

• Bump to scale-info-legacy 0.3.0.
• It's now easier to iterate over items handed back in *Info traits, and to do so in only one pallet/trait where that is applicable.

Fix storage info logic in the case of one hasher and a tuple of keys.

This release adds encode/decode logic for Runtime APIs, Constants and Custom Values, and removes some unused bits and pieces. Additionally we merge the trait functions for getting lists of entries into the main *TypeInfo traits, and do a little renaming for consistency. See #46 for more information.

• Provide information about the default value in StorageInfo, if one exists. This may be borrowed, and so adds a lifetime to the StorageInfo type (which .into_owned() can handle if necessary).

• Remove the _legacy functions; just use the non suffixed versions which are identical.
• Adds storage key encoding via frame_decode::storage::encode_storage_key, frame_decode::storage::encode_storage_key_to, andframe_decode::storage::encode_storage_key_with_info_to, with supporting traits.
• Rename prefix to encode_prefix to align with the above.

• Make a couple of methods in crate::extrinsics return impl ExactSizeIterator rather than impl Iterator, enabling them to be used with scale_decode::DecodeAsFields.

• Make the crate::extrinsics::NamedArg type public, since it's in the public interface.`

• Expose a crate::legacy_types module which provides crate::legacy_types::polkadot::relay_chain() to access the relay chain types. This is gated behind the "legacy-types" feature which is disabled by default.

• Support frame-metadata v23. That stabilized V16 metadata, so we implement the relevant traits for that here to support it.

• Support frame-metadata v20-v21.

• Bump frame-metadata to latest: 20.0.0

• Fix a decoding error where the ranges end at 0 if an extrinsic is 0 bytes in length (#30)

• Bump frame-metadata to 18.0, scale-decode to 0.16 and scale-value to 0.18 (latest versions at time of release).

0.5.0 (2024-10-23)

• Bump scale-decode 0.14, scale-value 0.17 and scale-info v2.11.4 (#7)
• Remove unused dependency hex (#8)
• Bump frame-metadata from 16.0.0 to 17.0.0 (#9)
• Bump scale-info-legacy from 0.2.1 to 0.2.2 (#10)

• Split ExtrinsicTypeInfo trait to get signature and extensions info separately, and support being given an extension version in the latter.
• Remove support for V5 signed extrinsics, which are no longer a thing (see #3685 for context).

• Fix extrinsic.call_range() and extensions.range() functions, and clarify descriptions.
• Add extrinsic.call_args_range() to return the call data arguments.

• Consistify helper functions; have list_storage_entries{_any} and type_registry_from_metadata{_any}, where the any versions take a RuntimeMetadata enum and the others take the specific metadata versions contained within.
• Improve the top level docs.

Initial release.