//@edition:2018
//@aux-build:proc_macros.rs

#![feature(stmt_expr_attributes)]
#![warn(clippy::almost_complete_range)]
#![allow(ellipsis_inclusive_range_patterns)]
#![allow(clippy::needless_parens_on_range_literals)]
#![allow(clippy::double_parens)]

extern crate proc_macros;
use proc_macros::{external, inline_macros};

#[inline_macros]
fn main() {
    #[rustfmt::skip]
    {
        let _ = ('a') ..='z';
        let _ = 'A' ..= ('Z');
        let _ = ((('0'))) ..= ('9');
    }

    let _ = 'b'..'z';
    let _ = 'B'..'Z';
    let _ = '1'..'9';

    let _ = (b'a')..=(b'z');
    let _ = b'A'..=b'Z';
    let _ = b'0'..=b'9';

    let _ = b'b'..b'z';
    let _ = b'B'..b'Z';
    let _ = b'1'..b'9';

    let _ = inline!('a')..='z';
    let _ = inline!('A')..='Z';
    let _ = inline!('0')..='9';

    let _ = match 0u8 {
        b'a'..=b'z' if true => 1,
        b'A'..=b'Z' if true => 2,
        b'0'..=b'9' if true => 3,
        b'b'..b'z' => 4,
        b'B'..b'Z' => 5,
        b'1'..b'9' => 6,
        _ => 7,
    };

    let _ = match 'x' {
        'a'..='z' if true => 1,
        'A'..='Z' if true => 2,
        '0'..='9' if true => 3,
        'b'..'z' => 4,
        'B'..'Z' => 5,
        '1'..'9' => 6,
        _ => 7,
    };

    external!(
        let _ = 'a'..'z';
        let _ = 'A'..'Z';
        let _ = '0'..'9';
    );
    inline!(
        let _ = 'a'..='z';
        let _ = 'A'..='Z';
        let _ = '0'..='9';
    );
}

#[clippy::msrv = "1.25"]
fn _under_msrv() {
    let _ = match 'a' {
        'a'...'z' => 1,
        'A'...'Z' => 2,
        '0'...'9' => 3,
        _ => 4,
    };
}

#[clippy::msrv = "1.26"]
fn _meets_msrv() {
    let _ = 'a'..='z';
    let _ = 'A'..='Z';
    let _ = '0'..='9';
    let _ = match 'a' {
        'a'..='z' => 1,
        'A'..='Z' => 1,
        '0'..='9' => 3,
        _ => 4,
    };
}