54 lines
1.8 KiB
Rust
54 lines
1.8 KiB
Rust
// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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#![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) -> bool { self.y }
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}
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fn foo() -> int {
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return (1i); //~ ERROR unnecessary parentheses around `return` value
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}
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fn bar() -> X {
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return (X { y: true }); //~ ERROR unnecessary parentheses around `return` value
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}
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fn main() {
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foo();
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bar();
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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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match (true) { //~ ERROR unnecessary parentheses around `match` head expression
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_ => {}
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}
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if let 1i = (1i) {} //~ ERROR unnecessary parentheses around `if let` head expression
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while let 1i = (2i) {} //~ ERROR unnecessary parentheses around `while let` head 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()) {}
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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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let mut _a = (0i); //~ ERROR unnecessary parentheses around assigned value
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_a = (0i); //~ ERROR unnecessary parentheses around assigned value
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_a += (1i); //~ ERROR unnecessary parentheses around assigned value
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}
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