commit | 7e672a00c3c1247b78dd1caf7d6f705f3b1a49b9 | [log] [tgz] |
---|---|---|
author | Jakob Vukalovic <jakobvukalovic@google.com> | Fri May 19 14:10:26 2023 +0000 |
committer | Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com> | Fri May 19 14:10:26 2023 +0000 |
tree | f8755189188b3d893bffb8e26b835c89ffed6561 | |
parent | 4ad0d47048c08a38614e2b25c5a450acd05ecf5f [diff] | |
parent | 25f2fe7247129bba2b7765a287cc8f13af4a202c [diff] |
Upgrade to 2.2.1 am: fa6723a968 am: b30ae73441 am: 80cb01c5c3 am: 86b8ea1e05 am: 25f2fe7247 Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/bitflags/+/2565030 Change-Id: I8361a424c566c7aed45670ea31535507e8ebfad9 Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>
A Rust macro to generate structures which behave like a set of bitflags
Add this to your Cargo.toml
:
[dependencies] bitflags = "2.2.1"
and this to your source code:
use bitflags::bitflags;
Generate a flags structure:
use bitflags::bitflags; // The `bitflags!` macro generates `struct`s that manage a set of flags. bitflags! { #[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash)] struct Flags: u32 { const A = 0b00000001; const B = 0b00000010; const C = 0b00000100; const ABC = Self::A.bits() | Self::B.bits() | Self::C.bits(); } } fn main() { let e1 = Flags::A | Flags::C; let e2 = Flags::B | Flags::C; assert_eq!((e1 | e2), Flags::ABC); // union assert_eq!((e1 & e2), Flags::C); // intersection assert_eq!((e1 - e2), Flags::A); // set difference assert_eq!(!e2, Flags::A); // set complement }
The minimum supported Rust version is documented in the Cargo.toml
file. This may be bumped in minor releases as necessary.