112 lines
2.7 KiB
Rust
Executable File
112 lines
2.7 KiB
Rust
Executable File
#![feature(plugin)]
|
|
|
|
#![plugin(clippy)]
|
|
#![deny(clippy)]
|
|
#![allow(unused)]
|
|
|
|
fn single_match(){
|
|
let x = Some(1u8);
|
|
match x { //~ ERROR you seem to be trying to use match
|
|
//~^ HELP try
|
|
Some(y) => {
|
|
println!("{:?}", y);
|
|
}
|
|
_ => ()
|
|
}
|
|
// Not linted
|
|
match x {
|
|
Some(y) => println!("{:?}", y),
|
|
None => ()
|
|
}
|
|
let z = (1u8,1u8);
|
|
match z { //~ ERROR you seem to be trying to use match
|
|
//~^ HELP try
|
|
(2...3, 7...9) => println!("{:?}", z),
|
|
_ => {}
|
|
}
|
|
|
|
// Not linted (pattern guards used)
|
|
match x {
|
|
Some(y) if y == 0 => println!("{:?}", y),
|
|
_ => ()
|
|
}
|
|
|
|
// Not linted (content in the else)
|
|
match z {
|
|
(2...3, 7...9) => println!("{:?}", z),
|
|
_ => println!("nope"),
|
|
}
|
|
}
|
|
|
|
fn match_bool() {
|
|
let test: bool = true;
|
|
|
|
match test { //~ ERROR you seem to be trying to match on a boolean expression
|
|
true => (),
|
|
false => (),
|
|
};
|
|
|
|
let option = 1;
|
|
match option == 1 { //~ ERROR you seem to be trying to match on a boolean expression
|
|
true => 1,
|
|
false => 0,
|
|
};
|
|
|
|
match test { //~ ERROR you seem to be trying to match on a boolean expression
|
|
true => (),
|
|
false => { println!("Noooo!"); },
|
|
};
|
|
|
|
match test { //~ ERROR you seem to be trying to match on a boolean expression
|
|
//~^ERROR you seem to be trying to use match
|
|
//TODO: Remove duplicate warning
|
|
false => { println!("Noooo!"); },
|
|
_ => (),
|
|
};
|
|
|
|
match test { //~ ERROR you seem to be trying to match on a boolean expression
|
|
false => { println!("Noooo!"); },
|
|
true => { println!("Yes!"); },
|
|
};
|
|
|
|
// Not linted
|
|
match option {
|
|
1 ... 10 => (),
|
|
10 ... 20 => (),
|
|
_ => (),
|
|
};
|
|
}
|
|
|
|
fn ref_pats() {
|
|
{
|
|
let v = &Some(0);
|
|
match v { //~ERROR instead of prefixing all patterns with `&`
|
|
&Some(v) => println!("{:?}", v),
|
|
&None => println!("none"),
|
|
}
|
|
match v { // this doesn't trigger, we have a different pattern
|
|
&Some(v) => println!("some"),
|
|
other => println!("other"),
|
|
}
|
|
}
|
|
let tup =& (1, 2);
|
|
match tup { //~ERROR instead of prefixing all patterns with `&`
|
|
&(v, 1) => println!("{}", v),
|
|
_ => println!("none"),
|
|
}
|
|
// special case: using & both in expr and pats
|
|
let w = Some(0);
|
|
match &w { //~ERROR you don't need to add `&` to both
|
|
&Some(v) => println!("{:?}", v),
|
|
&None => println!("none"),
|
|
}
|
|
// false positive: only wildcard pattern
|
|
let w = Some(0);
|
|
match w {
|
|
_ => println!("none"),
|
|
}
|
|
}
|
|
|
|
fn main() {
|
|
}
|