commit | 52b06bd93ebf58aeeefb7405970af79830de96e8 | [log] [tgz] |
---|---|---|
author | James Farrell <jamesfarrell@google.com> | Thu Sep 14 02:28:34 2023 +0000 |
committer | Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com> | Thu Sep 14 02:28:34 2023 +0000 |
tree | e1f7e5f4027bb7494517027519e3245c9fa3c96e | |
parent | 88d3d1363996ba727b9344ec2e5a3e168b463e1d [diff] | |
parent | 6da824df5a972eeeb284c11a84c48ed1fa881501 [diff] |
Cleanup cargo2android configs and patches am: 4730850d24 am: f16cd5eff5 am: 6da824df5a Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/bitflags/+/2751202 Change-Id: I6ddba25df6466b2011fb1efbfcd13f95cbbbe181 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.