commit | d816d6a1efc58e6095c9ffda1cab6ac739e88b36 | [log] [tgz] |
---|---|---|
author | Jakob Vukalovic <jakobvukalovic@google.com> | Thu May 11 14:22:38 2023 +0000 |
committer | Presubmit Automerger Backend <android-build-presubmit-automerger-backend@system.gserviceaccount.com> | Thu May 11 14:22:38 2023 +0000 |
tree | 1b28aeab31efcdaf01d2b30dc0d3bd91d64fa9c0 | |
parent | 3492377c784050776b026758784a37ab170ca709 [diff] | |
parent | 56f33fe2f2948cbf5797ab1510fcbf37675f451d [diff] |
[automerge] Upgrade to 2.2.1 2p: 56f33fe2f2 Original change: https://googleplex-android-review.googlesource.com/c/platform/external/rust/crates/bitflags/+/23172116 Change-Id: Id54a2d323bbc07be18bd8b44c01da51b7ba8680f Merged-In: I7c925a5336e13d042f82e68abcbe23bb774cd586
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.