rust/tests/ui/wildcard_enum_match_arm.rs
2019-09-21 07:26:18 +02:00

66 lines
1.5 KiB
Rust

// run-rustfix
#![deny(clippy::wildcard_enum_match_arm)]
#![allow(unreachable_code, unused_variables)]
#[derive(Clone, Copy, Debug, Eq, PartialEq)]
enum Color {
Red,
Green,
Blue,
Rgb(u8, u8, u8),
Cyan,
}
impl Color {
fn is_monochrome(self) -> bool {
match self {
Color::Red | Color::Green | Color::Blue => true,
Color::Rgb(r, g, b) => r | g == 0 || r | b == 0 || g | b == 0,
Color::Cyan => false,
}
}
}
fn main() {
let color = Color::Rgb(0, 0, 127);
match color {
Color::Red => println!("Red"),
_ => eprintln!("Not red"),
};
match color {
Color::Red => println!("Red"),
_not_red => eprintln!("Not red"),
};
let _str = match color {
Color::Red => "Red".to_owned(),
not_red => format!("{:?}", not_red),
};
match color {
Color::Red => {},
Color::Green => {},
Color::Blue => {},
Color::Cyan => {},
c if c.is_monochrome() => {},
Color::Rgb(_, _, _) => {},
};
let _str = match color {
Color::Red => "Red",
c @ Color::Green | c @ Color::Blue | c @ Color::Rgb(_, _, _) | c @ Color::Cyan => "Not red",
};
match color {
Color::Rgb(r, _, _) if r > 0 => "Some red",
_ => "No red",
};
match color {
Color::Red | Color::Green | Color::Blue | Color::Cyan => {},
Color::Rgb(..) => {},
};
let x: u8 = unimplemented!();
match x {
0 => {},
140 => {},
_ => {},
};
}