lighthouse-pulse/consensus/tree_hash_derive/Cargo.toml

[package]
name = "tree_hash_derive"
version = "0.4.0"
authors = ["Paul Hauner <paul@paulhauner.com>"]
edition = "2021"
description = "Procedural derive macros to accompany the tree_hash crate."
license = "Apache-2.0"

[lib]
proc-macro = true

[dependencies]
syn = "1.0.42"
quote = "1.0.7"
darling = "0.13.0"
Add tree_hash_derive crate 2019-04-15 05:45:05 +00:00			`[package]`
			`name = "tree_hash_derive"`
Implement SSZ union type (#2579) ## Issue Addressed NA ## Proposed Changes Implements the "union" type from the SSZ spec for `ssz`, `ssz_derive`, `tree_hash` and `tree_hash_derive` so it may be derived for `enums`: https://github.com/ethereum/consensus-specs/blob/v1.1.0-beta.3/ssz/simple-serialize.md#union The union type is required for the merge, since the `Transaction` type is defined as a single-variant union `Union[OpaqueTransaction]`. ### Crate Updates This PR will (hopefully) cause CI to publish new versions for the following crates: - `eth2_ssz_derive`: `0.2.1` -> `0.3.0` - `eth2_ssz`: `0.3.0` -> `0.4.0` - `eth2_ssz_types`: `0.2.0` -> `0.2.1` - `tree_hash`: `0.3.0` -> `0.4.0` - `tree_hash_derive`: `0.3.0` -> `0.4.0` These these crates depend on each other, I've had to add a workspace-level `[patch]` for these crates. A follow-up PR will need to remove this patch, ones the new versions are published. ### Union Behaviors We already had SSZ `Encode` and `TreeHash` derive for enums, however it just did a "transparent" pass-through of the inner value. Since the "union" decoding from the spec is in conflict with the transparent method, I've required that all `enum` have exactly one of the following enum-level attributes: #### SSZ - `#[ssz(enum_behaviour = "union")]` - matches the spec used for the merge - `#[ssz(enum_behaviour = "transparent")]` - maintains existing functionality - not supported for `Decode` (never was) #### TreeHash - `#[tree_hash(enum_behaviour = "union")]` - matches the spec used for the merge - `#[tree_hash(enum_behaviour = "transparent")]` - maintains existing functionality This means that we can maintain the existing transparent behaviour, but all existing users will get a compile-time error until they explicitly opt-in to being transparent. ### Legacy Option Encoding Before this PR, we already had a union-esque encoding for `Option<T>`. However, this was with the old SSZ spec where the union selector was 4 bytes. During merge specification, the spec was changed to use 1 byte for the selector. Whilst the 4-byte `Option` encoding was never used in the spec, we used it in our database. Writing a migrate script for all occurrences of `Option` in the database would be painful, especially since it's used in the `CommitteeCache`. To avoid the migrate script, I added a serde-esque `#[ssz(with = "module")]` field-level attribute to `ssz_derive` so that we can opt into the 4-byte encoding on a field-by-field basis. The `ssz::legacy::four_byte_impl!` macro allows a one-liner to define the module required for the `#[ssz(with = "module")]` for some `Option<T> where T: Encode + Decode`. Notably, I have removed `Encode` and `Decode` impls for `Option`. I've done this to force a break on downstream users. Like I mentioned, `Option` isn't used in the spec so I don't think it'll be that annoying. I think it's nicer than quietly having two different union implementations or quietly breaking the existing `Option` impl. ### Crate Publish Ordering I've modified the order in which CI publishes crates to ensure that we don't publish a crate without ensuring we already published a crate that it depends upon. ## TODO - [ ] Queue a follow-up `[patch]`-removing PR. 2021-09-25 05:58:36 +00:00			`version = "0.4.0"`
Add tree_hash_derive crate 2019-04-15 05:45:05 +00:00			`authors = ["Paul Hauner <paul@paulhauner.com>"]`
Update to Rust 1.59 and 2021 edition (#3038) ## Proposed Changes Lots of lint updates related to `flat_map`, `unwrap_or_else` and string patterns. I did a little more creative refactoring in the op pool, but otherwise followed Clippy's suggestions. ## Additional Info We need this PR to unblock CI. 2022-02-25 00:10:17 +00:00			`edition = "2021"`
Publish ssz_types (and deps) to crates.io (#468) * Rename `hashing` crate to `eth2_hashing` * Add license, desc to eth2_hashing Cargo.toml * Remove merkle root from eth2 hashing * Remove old benches folder (zombied from old branch) * Add docs to eth2_hashing * Prepare tree_hash for publishing on crates.io * Update deps to use crates.io instead of paths * Update all crates to pull ssz from crates.io * Remove cached_tree_hash, add patches to manifest * Fix compile error in benches * Remove unused code * Fix fake_crypto compile error 2019-08-08 01:39:47 +00:00			`description = "Procedural derive macros to accompany the tree_hash crate."`
			`license = "Apache-2.0"`
Add tree_hash_derive crate 2019-04-15 05:45:05 +00:00
			`[lib]`
			`proc-macro = true`

			`[dependencies]`
Update external deps (#1711) ## Issue Addressed - Resolves #1706 ## Proposed Changes Updates dependencies across the workspace. Any crate that was not able to be brought to the latest version is listed in #1712. ## Additional Info NA 2020-10-05 08:22:19 +00:00			`syn = "1.0.42"`
			`quote = "1.0.7"`
Implement SSZ union type (#2579) ## Issue Addressed NA ## Proposed Changes Implements the "union" type from the SSZ spec for `ssz`, `ssz_derive`, `tree_hash` and `tree_hash_derive` so it may be derived for `enums`: https://github.com/ethereum/consensus-specs/blob/v1.1.0-beta.3/ssz/simple-serialize.md#union The union type is required for the merge, since the `Transaction` type is defined as a single-variant union `Union[OpaqueTransaction]`. ### Crate Updates This PR will (hopefully) cause CI to publish new versions for the following crates: - `eth2_ssz_derive`: `0.2.1` -> `0.3.0` - `eth2_ssz`: `0.3.0` -> `0.4.0` - `eth2_ssz_types`: `0.2.0` -> `0.2.1` - `tree_hash`: `0.3.0` -> `0.4.0` - `tree_hash_derive`: `0.3.0` -> `0.4.0` These these crates depend on each other, I've had to add a workspace-level `[patch]` for these crates. A follow-up PR will need to remove this patch, ones the new versions are published. ### Union Behaviors We already had SSZ `Encode` and `TreeHash` derive for enums, however it just did a "transparent" pass-through of the inner value. Since the "union" decoding from the spec is in conflict with the transparent method, I've required that all `enum` have exactly one of the following enum-level attributes: #### SSZ - `#[ssz(enum_behaviour = "union")]` - matches the spec used for the merge - `#[ssz(enum_behaviour = "transparent")]` - maintains existing functionality - not supported for `Decode` (never was) #### TreeHash - `#[tree_hash(enum_behaviour = "union")]` - matches the spec used for the merge - `#[tree_hash(enum_behaviour = "transparent")]` - maintains existing functionality This means that we can maintain the existing transparent behaviour, but all existing users will get a compile-time error until they explicitly opt-in to being transparent. ### Legacy Option Encoding Before this PR, we already had a union-esque encoding for `Option<T>`. However, this was with the old SSZ spec where the union selector was 4 bytes. During merge specification, the spec was changed to use 1 byte for the selector. Whilst the 4-byte `Option` encoding was never used in the spec, we used it in our database. Writing a migrate script for all occurrences of `Option` in the database would be painful, especially since it's used in the `CommitteeCache`. To avoid the migrate script, I added a serde-esque `#[ssz(with = "module")]` field-level attribute to `ssz_derive` so that we can opt into the 4-byte encoding on a field-by-field basis. The `ssz::legacy::four_byte_impl!` macro allows a one-liner to define the module required for the `#[ssz(with = "module")]` for some `Option<T> where T: Encode + Decode`. Notably, I have removed `Encode` and `Decode` impls for `Option`. I've done this to force a break on downstream users. Like I mentioned, `Option` isn't used in the spec so I don't think it'll be that annoying. I think it's nicer than quietly having two different union implementations or quietly breaking the existing `Option` impl. ### Crate Publish Ordering I've modified the order in which CI publishes crates to ensure that we don't publish a crate without ensuring we already published a crate that it depends upon. ## TODO - [ ] Queue a follow-up `[patch]`-removing PR. 2021-09-25 05:58:36 +00:00			`darling = "0.13.0"`