71 lines
1.5 KiB
Rust
71 lines
1.5 KiB
Rust
// Copyright 2014-2018 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution.
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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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#[allow(unused_assignments)]
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#[warn(clippy::misrefactored_assign_op, clippy::assign_op_pattern)]
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fn main() {
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let mut a = 5;
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a += a + 1;
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a += 1 + a;
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a -= a - 1;
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a *= a * 99;
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a *= 42 * a;
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a /= a / 2;
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a %= a % 5;
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a &= a & 1;
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a *= a * a;
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a = a * a * a;
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a = a * 42 * a;
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a = a * 2 + a;
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a -= 1 - a;
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a /= 5 / a;
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a %= 42 % a;
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a <<= 6 << a;
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}
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// check that we don't lint on op assign impls, because that's just the way to impl them
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use std::ops::{Mul, MulAssign};
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#[derive(Copy, Clone, Debug, PartialEq)]
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pub struct Wrap(i64);
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impl Mul<i64> for Wrap {
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type Output = Self;
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fn mul(self, rhs: i64) -> Self {
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Wrap(self.0 * rhs)
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}
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}
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impl MulAssign<i64> for Wrap {
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fn mul_assign(&mut self, rhs: i64) {
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*self = *self * rhs
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}
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}
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fn cow_add_assign() {
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use std::borrow::Cow;
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let mut buf = Cow::Owned(String::from("bar"));
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let cows = Cow::Borrowed("foo");
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// this can be linted
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buf = buf + cows.clone();
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// this should not as cow<str> Add is not commutative
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buf = cows + buf;
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println!("{}", buf);
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}
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