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

   1 #![warn(clippy::blocks_in_if_conditions)]
   2 #![allow(unused, clippy::let_and_return)]
   3
   4 fn predicate<F: FnOnce(T) -> bool, T>(pfn: F, val: T) -> bool {
   5     pfn(val)
   6 }
   7
   8 fn pred_test() {
   9     let v = 3;
  10     let sky = "blue";
  11     // This is a sneaky case, where the block isn't directly in the condition,
  12     // but is actually inside a closure that the condition is using.
  13     // The same principle applies -- add some extra expressions to make sure
  14     // linter isn't confused by them.
  15     if v == 3
  16         && sky == "blue"
  17         && predicate(
  18             |x| {
  19                 let target = 3;
  20                 x == target
  21             },
  22             v,
  23         )
  24     {}
  25
  26     if predicate(
  27         |x| {
  28             let target = 3;
  29             x == target
  30         },
  31         v,
  32     ) {}
  33 }
  34
  35 fn closure_without_block() {
  36     if predicate(|x| x == 3, 6) {}
  37 }
  38
  39 fn macro_in_closure() {
  40     let option = Some(true);
  41
  42     if option.unwrap_or_else(|| unimplemented!()) {
  43         unimplemented!()
  44     }
  45 }
  46
  47 #[rustfmt::skip]
  48 fn main() {
  49     let mut range = 0..10;
  50     range.all(|i| {i < 10} );
  51
  52     let v = vec![1, 2, 3];
  53     if v.into_iter().any(|x| {x == 4}) {
  54         println!("contains 4!");
  55     }
  56 }