Crate flags_macro

This crate provides a convenient macro flags for constructing bitflags. It’s designed to be compatible with bitflags and enumflags but works with any bitflags-like types.

Examples

bitflags:

#[macro_use]
extern crate bitflags;
bitflags! {
    struct Test: u32 {
        const A = 0b0001;
        const B = 0b0010;
    }
}

let flags0 = flags![Test::{}];
let flags1 = flags![Test::{A}];
let flags2 = flags![Test::{A | B}];

assert_eq!(flags0, Test::empty());
assert_eq!(flags1, Test::A);
assert_eq!(flags2, Test::A | Test::B);

enumflags:

#[macro_use]
extern crate enumflags;
#[derive(EnumFlags, Copy, Clone, PartialEq, Eq, Debug)]
#[repr(u8)]
pub enum Test { A = 0b0001, B = 0b0010 }

let flags0 = flags![Test::{}];
let flags1 = flags![Test::{A}];
let flags2 = flags![Test::{A | B}];

assert_eq!(flags0, enumflags::BitFlags::empty());
assert_eq!(flags1, Test::A);
assert_eq!(flags2, Test::A | Test::B);

Macros

• flags
  Emits an expression of type <E as DefaultSet>::Set given zero or more values of type E defined as associated constants or enumerate items of E.
• set_array
  Emits an array expression containing zero or more values defined within the same namespace (or a similar language construct).

Traits

• DefaultSet
  A trait for getting the default “set” type from an “element” type.