Jack Wrenn

Introduce `doc(hidden)` `derive(Project)` (#3492) This factors out the `derive(TryFromBytes)` into `project.rs`, and exposes this machinery as a doc-hidden `derive(Project)`. The implementation of `is_bit_valid` on enums is now fully safe, and a soundness issue of mutable enum tag projection is resolved by permitting only immutable tag projection. gherrit-pr-id: Gcc56a15ce65387a017464947e8c2f25dc9e8c737

Introduce unstable `#[zerocopy(invariant(...))]` library invariant checking (#3681) Makes progress on #1330. gherrit-pr-id: G2cef62dbb236b18953ded9a3d514bf0913c0e49c

Fix `TryFromBytes::try_read_from*` (#3712) * Implement common traits for `ReadOnly` gherrit-pr-id: Gfa0cb30780189c43bb84da57a9ade4d5a9754223 * Genericize `(try_)ref_from_prefix_suffix` ...so that they consume an `IntoBytes` as their source. Since these methods are private, this does not yet increase expressivity for users, but nonetheless allows the compiler to better optimize existing callsites. For example, the `ref_from_prefix_dynamic_size` benchmark becomes branchless, shrinking from 14 to 9 instructions. The falible suffix-with-elems benchmarks shrink from 24 to 17 instructions for dynamic size, and 28 to 20 instructions for dynamic padding. Only `try_ref_from_prefix_dynamic_size` regresses, from 19 to 20 instructions. gherrit-pr-id: Gd1b460a8ec2e8aa8adf2e070c329d9f209c7c89c * Fix `TryFromBytes::try_read_from*` Refactors these routines to not depend on padding byte preservation across moves. Along the way, we make the `try_read_from` helper safe, generic, and better-optimized. Instruction counts for the `try_read_from_*` change by -36% to -55%. gherrit-pr-id: G35c8b8db33f4c984d5716af9a26c0a5ec9bd9c7e

Add `Client` parameter to projection traits (#3480) This will allow us to emit parallel impls from our various derives without conflict. gherrit-pr-id: Gd2bc8560585e8f472223acf71b96e0f71b2d00c2

Genericize `(try_)ref_from_prefix_suffix` (#3711) * Implement common traits for `ReadOnly` gherrit-pr-id: Gfa0cb30780189c43bb84da57a9ade4d5a9754223 * Genericize `(try_)ref_from_prefix_suffix` ...so that they consume an `IntoBytes` as their source. Since these methods are private, this does not yet increase expressivity for users, but nonetheless allows the compiler to better optimize existing callsites. For example, the `ref_from_prefix_dynamic_size` benchmark becomes branchless, shrinking from 14 to 9 instructions. The falible suffix-with-elems benchmarks shrink from 24 to 17 instructions for dynamic size, and 28 to 20 instructions for dynamic padding. Only `try_ref_from_prefix_dynamic_size` regresses, from 19 to 20 instructions. gherrit-pr-id: Gd1b460a8ec2e8aa8adf2e070c329d9f209c7c89c

Implement common traits for `ReadOnly` (#3682) gherrit-pr-id: Gfa0cb30780189c43bb84da57a9ade4d5a9754223

Rename `invariant::Valid` to `invariant::Safe` (#3665) gherrit-pr-id: G5fa632801df03c070c991b72a15721a1f2d66490

Factor out struct/enum variant `is_safe` validation into a shared helper (#3680) * Rename `Ptr::try_into_valid` to `Ptr::try_into_safe` gherrit-pr-id: G43414d79608bdfefacdf84890ce8f2224bdb5ceb * Factor out struct/enum variant `is_safe` validation into a shared helper gherrit-pr-id: Ge92b50404cae36c04983475a4434d74b4b84ad14

Make `ByteOrder::ORDER` and `Order` public; release 0.8.54 (#3475) gherrit-pr-id: Gd9e350a7c6d7eef44a2d2f32e00a2325b6413f7c

Rename `Ptr::try_into_valid` to `Ptr::try_into_safe` (#3679) gherrit-pr-id: G43414d79608bdfefacdf84890ce8f2224bdb5ceb