| commit | aa0c28d993205e94da1989e4c319adf504f4adf4 | [log] [tgz] |
|---|---|---|
| author | Android Build Coastguard Worker <[email protected]> | Thu Dec 07 00:10:27 2023 +0000 |
| committer | Android Build Coastguard Worker <[email protected]> | Thu Dec 07 00:10:27 2023 +0000 |
| tree | d8b8d12a3816fcc3fdf5f08e859aa5eb539f3270 | |
| parent | 263291c9e226deee68b68ac8db74f00b0e94d1ca [diff] | |
| parent | a15185e48b98c6e0d4f2f681e7b9f613e1adefb0 [diff] |
Snap for 11186783 from a15185e48b98c6e0d4f2f681e7b9f613e1adefb0 to 24Q1-release Change-Id: Iea1aab0151b59b92d4777d6841e327dbd5166d1a
A Rust macro to generate structures which behave like a set of bitflags
Add this to your Cargo.toml:
[dependencies] bitflags = "2.3.2"
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.