rust-clippy/tests/ui/match_overlapping_arm.rs

// Copyright 2014-2018 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.

#![feature(exclusive_range_pattern)]
#![warn(clippy::match_overlapping_arm)]
#![allow(clippy::redundant_pattern_matching)]

/// Tests for match_overlapping_arm

fn overlapping() {
    const FOO : u64 = 2;

    match 42 {
        0 ... 10 => println!("0 ... 10"),
        0 ... 11 => println!("0 ... 11"),
        _ => (),
    }

    match 42 {
        0 ... 5 => println!("0 ... 5"),
        6 ... 7 => println!("6 ... 7"),
        FOO ... 11 => println!("0 ... 11"),
        _ => (),
    }

    match 42 {
        2 => println!("2"),
        0 ... 5 => println!("0 ... 5"),
        _ => (),
    }

    match 42 {
        2 => println!("2"),
        0 ... 2 => println!("0 ... 2"),
        _ => (),
    }

    match 42 {
        0 ... 10 => println!("0 ... 10"),
        11 ... 50 => println!("11 ... 50"),
        _ => (),
    }

    match 42 {
        2 => println!("2"),
        0 .. 2 => println!("0 .. 2"),
        _ => (),
    }

    match 42 {
        0 .. 10 => println!("0 .. 10"),
        10 .. 50 => println!("10 .. 50"),
        _ => (),
    }

    match 42 {
        0 .. 11 => println!("0 .. 11"),
        0 ... 11 => println!("0 ... 11"),
        _ => (),
    }

    if let None = Some(42) {
        // nothing
    } else if let None = Some(42) {
        // another nothing :-)
    }
}

fn main() {}