commit | c4af5ed2fa5e1b7ed989a39a6b1e3dfa8a8b19b4 | [log] [tgz] |
---|---|---|
author | Andrew Walbran <qwandor@google.com> | Wed Jun 14 16:37:52 2023 +0000 |
committer | Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com> | Wed Jun 14 16:37:52 2023 +0000 |
tree | 680ec0b7c7385389bf019efd940a1690c6aac350 | |
parent | 45a157cc95331987bfbd03b856007a470eeda21b [diff] | |
parent | 976ee2c4aca4f6a98daa9d5ff32d1950c1fad9fa [diff] |
Update to 2.3.2. am: ff6563b406 am: 4cb5dac10a am: f67ee5f0b8 am: a6cfe4692d am: 88d3d13639 am: 976ee2c4ac Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/bitflags/+/2624429 Change-Id: I6f18177b5d32d151f5c47c542496555b0b46eec2 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 = "2.3.2"
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.