src/tools/clippy/tests/ui/needless_bitwise_bool.rs

   1 #![warn(clippy::needless_bitwise_bool)]
   2
   3 fn returns_bool() -> bool {
   4     true
   5 }
   6
   7 const fn const_returns_bool() -> bool {
   8     false
   9 }
  10
  11 fn main() {
  12     let (x, y) = (false, true);
  13     if x & y {
  14         println!("true")
  15     }
  16     if returns_bool() & x {
  17         println!("true")
  18     }
  19     if !returns_bool() & returns_bool() {
  20         println!("true")
  21     }
  22     if y & !x {
  23         println!("true")
  24     }
  25
  26     // BELOW: lints we hope to catch as `Expr::can_have_side_effects` improves.
  27     if y & !const_returns_bool() {
  28         println!("true") // This is a const function, in an UnOp
  29     }
  30
  31     if y & "abcD".is_empty() {
  32         println!("true") // This is a const method call
  33     }
  34
  35     if y & (0 < 1) {
  36         println!("true") // This is a BinOp with no side effects
  37     }
  38 }