| commit | a15185e48b98c6e0d4f2f681e7b9f613e1adefb0 | [log] [tgz] |
|---|---|---|
| author | Andrew Walbran <[email protected]> | Wed Dec 06 19:18:39 2023 +0000 |
| committer | Automerger Merge Worker <[email protected]> | Wed Dec 06 19:18:39 2023 +0000 |
| tree | d8b8d12a3816fcc3fdf5f08e859aa5eb539f3270 | |
| parent | c7a098b34b303146f04fe82d4e7a159472816252 [diff] | |
| parent | 1c029fcac0a5327bf6e3602071efb56aa6605ce4 [diff] |
Migrate to cargo_embargo. am: e2d1b9e3f6 am: 6e7aa0fc86 am: 1c029fcac0 Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/bitflags/+/2862465 Change-Id: I047df4616404ec966507d79b166dba3749a133d5 Signed-off-by: Automerger Merge Worker <[email protected]>
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.