commit | 734f45adaeb6a0034e92a28858aee64be0fcb170 | [log] [tgz] |
---|---|---|
author | Yecheng Zhao <zyecheng@google.com> | Tue Oct 10 21:15:31 2023 +0000 |
committer | Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com> | Tue Oct 10 21:15:31 2023 +0000 |
tree | c99f8e80bd05069fe0e9369538c89abd5cf17cdd | |
parent | bfbb18803319790985d6745690c8ce0b605e972f [diff] | |
parent | cd84572aea126e1592e68e23a1e4eb50fe2ee194 [diff] |
Add BUILD file for bitflags kleaf build am: 229cf038ab am: 0f031b84e0 am: eb6eafb61f am: d9b8574003 am: cd84572aea Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/bitflags/+/2779828 Change-Id: Ie41a8df0949500f836471c6f2bd043114456ed2b 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.