78 lines
2.2 KiB
Rust
78 lines
2.2 KiB
Rust
#![deny(unused_parens)]
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#[derive(Eq, PartialEq)]
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struct X { y: bool }
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impl X {
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fn foo(&self, conjunct: bool) -> bool { self.y && conjunct }
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}
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fn foo() -> isize {
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return (1); //~ ERROR unnecessary parentheses around `return` value
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}
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fn bar(y: bool) -> X {
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return (X { y }); //~ ERROR unnecessary parentheses around `return` value
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}
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fn unused_parens_around_return_type() -> (u32) { //~ ERROR unnecessary parentheses around type
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panic!()
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}
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fn unused_parens_around_block_return() -> u32 {
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let foo = {
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(5) //~ ERROR unnecessary parentheses around block return value
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};
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(5) //~ ERROR unnecessary parentheses around block return value
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}
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trait Trait {
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fn test(&self);
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}
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fn passes_unused_parens_lint() -> &'static (dyn Trait) {
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panic!()
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}
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macro_rules! baz {
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($($foo:expr),+) => {
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($($foo),*)
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}
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}
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const CONST_ITEM: usize = (10); //~ ERROR unnecessary parentheses around assigned value
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static STATIC_ITEM: usize = (10); //~ ERROR unnecessary parentheses around assigned value
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fn main() {
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foo();
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bar((true)); //~ ERROR unnecessary parentheses around function argument
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if (true) {} //~ ERROR unnecessary parentheses around `if` condition
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while (true) {} //~ ERROR unnecessary parentheses around `while` condition
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//~^ WARN denote infinite loops with
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match (true) { //~ ERROR unnecessary parentheses around `match` scrutinee expression
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_ => {}
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}
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if let 1 = (1) {} //~ ERROR unnecessary parentheses around `let` scrutinee expression
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while let 1 = (2) {} //~ ERROR unnecessary parentheses around `let` scrutinee expression
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let v = X { y: false };
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// struct lits needs parens, so these shouldn't warn.
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if (v == X { y: true }) {}
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if (X { y: true } == v) {}
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if (X { y: false }.y) {}
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while (X { y: false }.foo(true)) {}
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while (true | X { y: false }.y) {}
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match (X { y: false }) {
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_ => {}
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}
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X { y: false }.foo((true)); //~ ERROR unnecessary parentheses around method argument
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let mut _a = (0); //~ ERROR unnecessary parentheses around assigned value
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_a = (0); //~ ERROR unnecessary parentheses around assigned value
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_a += (1); //~ ERROR unnecessary parentheses around assigned value
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let _a = baz!(3, 4);
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let _b = baz!(3);
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}
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