129 lines
3.8 KiB
Rust
129 lines
3.8 KiB
Rust
//@ run-rustfix
|
|
|
|
#![deny(unused_parens)]
|
|
#![allow(while_true)] // for rustfix
|
|
|
|
#[derive(Eq, PartialEq)]
|
|
struct X { y: bool }
|
|
impl X {
|
|
fn foo(&self, conjunct: bool) -> bool { self.y && conjunct }
|
|
}
|
|
|
|
fn foo() -> isize {
|
|
return 1; //~ ERROR unnecessary parentheses around `return` value
|
|
}
|
|
fn bar(y: bool) -> X {
|
|
return X { y }; //~ ERROR unnecessary parentheses around `return` value
|
|
}
|
|
|
|
pub fn unused_parens_around_return_type() -> u32 { //~ ERROR unnecessary parentheses around type
|
|
panic!()
|
|
}
|
|
|
|
pub fn unused_parens_around_block_return() -> u32 {
|
|
let _foo = {
|
|
5 //~ ERROR unnecessary parentheses around block return value
|
|
};
|
|
5 //~ ERROR unnecessary parentheses around block return value
|
|
}
|
|
|
|
pub trait Trait {
|
|
fn test(&self);
|
|
}
|
|
|
|
pub fn passes_unused_parens_lint() -> &'static (dyn Trait) {
|
|
panic!()
|
|
}
|
|
|
|
pub fn parens_with_keyword(e: &[()]) -> i32 {
|
|
if true {} //~ ERROR unnecessary parentheses around `if`
|
|
while true {} //~ ERROR unnecessary parentheses around `while`
|
|
for _ in e {} //~ ERROR unnecessary parentheses around `for`
|
|
match 1 { _ => ()} //~ ERROR unnecessary parentheses around `match`
|
|
return 1; //~ ERROR unnecessary parentheses around `return` value
|
|
}
|
|
|
|
macro_rules! baz {
|
|
($($foo:expr),+) => {
|
|
($($foo),*)
|
|
};
|
|
}
|
|
|
|
macro_rules! unit {
|
|
() => {
|
|
()
|
|
};
|
|
}
|
|
|
|
struct One;
|
|
|
|
impl std::ops::Sub<One> for () {
|
|
type Output = i32;
|
|
fn sub(self, _: One) -> Self::Output {
|
|
-1
|
|
}
|
|
}
|
|
|
|
impl std::ops::Neg for One {
|
|
type Output = i32;
|
|
fn neg(self) -> Self::Output {
|
|
-1
|
|
}
|
|
}
|
|
|
|
pub const CONST_ITEM: usize = 10; //~ ERROR unnecessary parentheses around assigned value
|
|
pub static STATIC_ITEM: usize = 10; //~ ERROR unnecessary parentheses around assigned value
|
|
|
|
fn main() {
|
|
foo();
|
|
bar(true); //~ ERROR unnecessary parentheses around function argument
|
|
|
|
if true {} //~ ERROR unnecessary parentheses around `if` condition
|
|
while true {} //~ ERROR unnecessary parentheses around `while` condition
|
|
match true { //~ ERROR unnecessary parentheses around `match` scrutinee expression
|
|
_ => {}
|
|
}
|
|
if let 1 = 1 {} //~ ERROR unnecessary parentheses around `let` scrutinee expression
|
|
while let 1 = 2 {} //~ ERROR unnecessary parentheses around `let` scrutinee expression
|
|
let v = X { y: false };
|
|
// struct lits needs parens, so these shouldn't warn.
|
|
if (v == X { y: true }) {}
|
|
if (X { y: true } == v) {}
|
|
if (X { y: false }.y) {}
|
|
// this shouldn't warn, because the parens are necessary to disambiguate let chains
|
|
if let true = (true && false) {}
|
|
|
|
while (X { y: false }.foo(true)) {}
|
|
while (true | X { y: false }.y) {}
|
|
|
|
match (X { y: false }) {
|
|
_ => {}
|
|
}
|
|
|
|
X { y: false }.foo(true); //~ ERROR unnecessary parentheses around method argument
|
|
|
|
let mut _a = 0; //~ ERROR unnecessary parentheses around assigned value
|
|
_a = 0; //~ ERROR unnecessary parentheses around assigned value
|
|
_a += 1; //~ ERROR unnecessary parentheses around assigned value
|
|
|
|
let mut _a = 3; //~ ERROR unnecessary parentheses around pattern
|
|
let mut _a = 3; //~ ERROR unnecessary parentheses around pattern
|
|
let mut _a = 3; //~ ERROR unnecessary parentheses around pattern
|
|
|
|
let _a = 3; //~ ERROR unnecessary parentheses around pattern
|
|
let _a = 3; //~ ERROR unnecessary parentheses around pattern
|
|
let _a = 3; //~ ERROR unnecessary parentheses around pattern
|
|
|
|
let _a = baz!(3, 4);
|
|
let _b = baz!(3);
|
|
|
|
let _ = {
|
|
unit!() - One //~ ERROR unnecessary parentheses around block return value
|
|
} + {
|
|
unit![] - One //~ ERROR unnecessary parentheses around block return value
|
|
} + {
|
|
// FIXME: false positive. This parenthesis is required.
|
|
unit! {} - One //~ ERROR unnecessary parentheses around block return value
|
|
};
|
|
}
|