rust/tests/ui/needless_return.rs
2020-08-16 00:24:27 +03:00

96 lines
1.6 KiB
Rust

// run-rustfix
#![allow(unused, clippy::needless_bool)]
#![allow(clippy::if_same_then_else, clippy::single_match)]
#![warn(clippy::needless_return)]
macro_rules! the_answer {
() => {
42
};
}
fn test_end_of_fn() -> bool {
if true {
// no error!
return true;
}
return true;
}
fn test_no_semicolon() -> bool {
return true;
}
fn test_if_block() -> bool {
if true {
return true;
} else {
return false;
}
}
fn test_match(x: bool) -> bool {
match x {
true => return false,
false => {
return true;
},
}
}
fn test_closure() {
let _ = || {
return true;
};
let _ = || return true;
}
fn test_macro_call() -> i32 {
return the_answer!();
}
fn test_void_fun() {
return;
}
fn test_void_if_fun(b: bool) {
if b {
return;
} else {
return;
}
}
fn test_void_match(x: u32) {
match x {
0 => (),
_ => return,
}
}
fn read_line() -> String {
use std::io::BufRead;
let stdin = ::std::io::stdin();
return stdin.lock().lines().next().unwrap().unwrap();
}
fn borrows_but_not_last(value: bool) -> String {
if value {
use std::io::BufRead;
let stdin = ::std::io::stdin();
let _a = stdin.lock().lines().next().unwrap().unwrap();
return String::from("test");
} else {
return String::new();
}
}
fn main() {
let _ = test_end_of_fn();
let _ = test_no_semicolon();
let _ = test_if_block();
let _ = test_match(true);
test_closure();
}