remain 0.2.15

Compile-time checks that an enum, struct, or match is written in sorted order.
Documentation 
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#![allow(dead_code)]
#![cfg(not(remain_stable_testing))]
#![feature(proc_macro_hygiene, stmt_expr_attributes)]
#![cfg_attr(not(check_cfg), allow(unexpected_cfgs))]
#![allow(
    clippy::derive_partial_eq_without_eq,
    clippy::extra_unused_type_parameters,
    clippy::match_same_arms
)]

#[remain::sorted]
#[derive(PartialEq)]
pub enum TestEnum {
    A,
    #[remain::unsorted]
    Ignored,
    B,
    C,
    D,
    __Nonexhaustive,
}

#[remain::sorted]
#[derive(PartialEq)]
pub struct TestStruct {
    a: usize,
    b: usize,
    c: usize,
    #[unsorted]
    ignored: usize,
    d: usize,
}

#[test]
fn test_attrs() {
    fn is_partial_eq<T: PartialEq>() -> bool {
        true
    }

    assert!(is_partial_eq::<TestEnum>());
    assert!(is_partial_eq::<TestStruct>());
}

#[test]
fn test_let() {
    let value = TestEnum::A;

    #[remain::sorted]
    let _ = match value {
        TestEnum::A => {}
        #[remain::unsorted]
        TestEnum::Ignored => {}
        TestEnum::B => {}
        TestEnum::C => {}
        _ => {}
    };
}

#[test]
fn test_match() {
    let value = TestEnum::A;

    #[remain::sorted]
    match value {
        TestEnum::A => {}
        TestEnum::B => {}
        #[unsorted]
        TestEnum::Ignored => {}
        TestEnum::C => {}
        _ => {}
    }
}