src/test/ui/closures/2229_closure_analysis/run_pass/tuple-struct-pattern-matching-with-methods.rs

   1 // edition:2021
   2 //check-pass
   3
   4 #[derive(Copy, Clone)]
   5 enum PointType {
   6     TwoD(u32, u32),
   7     ThreeD(u32, u32, u32)
   8 }
   9
  10 // Testing tuple struct patterns
  11 struct Points {
  12     points: Vec<PointType>,
  13 }
  14
  15 impl Points {
  16     pub fn test1(&mut self) -> Vec<usize> {
  17         (0..self.points.len())
  18             .filter_map(|i| {
  19                 match self.test2(i) {
  20                     PointType::TwoD (..) => Some(i),
  21                     PointType::ThreeD (..) => None,
  22                 }
  23             })
  24             .collect()
  25     }
  26
  27     pub fn test2(&mut self, i: usize) -> PointType {
  28         self.points[i]
  29     }
  30 }
  31
  32 fn main() {
  33     let mut points = Points {
  34         points: Vec::<PointType>::new()
  35     };
  36
  37     points.points.push(PointType::ThreeD(0,0,0));
  38     points.points.push(PointType::TwoD(0,0));
  39     points.points.push(PointType::ThreeD(0,0,1));
  40     points.points.push(PointType::TwoD(0,1));
  41
  42     println!("{:?}", points.test1());
  43 }