commit | 565785578736a4766a9668a83bd02ef5aae63b44 | [log] [tgz] |
---|---|---|
author | Per Larsen <perlarsen@google.com> | Wed Jun 28 00:11:09 2023 +0000 |
committer | Andrei Homescu <ahomescu@google.com> | Tue Oct 31 17:53:59 2023 +0000 |
tree | 06de542d3b3e4898e3ff1aa4d600c72498ed8e06 | |
parent | 229cf038ab1877c0c94662d4ceef875ca7415267 [diff] |
Adding autogenerated Trusty makefile rules Bug: 281857510 Test: build.py --skip-tests qemu-generic-arm64-test-debug Change-Id: I756ede6cbd846ab6f892f712aee06d825cd6c9dc
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.