src/tools/clippy/tests/ui/rc_clone_in_vec_init/rc.rs

   1 #![warn(clippy::rc_clone_in_vec_init)]
   2 use std::rc::Rc;
   3 use std::sync::Mutex;
   4
   5 fn main() {}
   6
   7 fn should_warn_simple_case() {
   8     let v = vec![Rc::new("x".to_string()); 2];
   9 }
  10
  11 fn should_warn_simple_case_with_big_indentation() {
  12     if true {
  13         let k = 1;
  14         dbg!(k);
  15         if true {
  16             let v = vec![Rc::new("x".to_string()); 2];
  17         }
  18     }
  19 }
  20
  21 fn should_warn_complex_case() {
  22     let v = vec![
  23         std::rc::Rc::new(Mutex::new({
  24             let x = 1;
  25             dbg!(x);
  26             x
  27         }));
  28         2
  29     ];
  30
  31     let v1 = vec![
  32         Rc::new(Mutex::new({
  33             let x = 1;
  34             dbg!(x);
  35             x
  36         }));
  37         2
  38     ];
  39 }
  40
  41 fn should_not_warn_custom_arc() {
  42     #[derive(Clone)]
  43     struct Rc;
  44
  45     impl Rc {
  46         fn new() -> Self {
  47             Rc
  48         }
  49     }
  50
  51     let v = vec![Rc::new(); 2];
  52 }
  53
  54 fn should_not_warn_vec_from_elem_but_not_rc() {
  55     let v = vec![String::new(); 2];
  56     let v1 = vec![1; 2];
  57     let v2 = vec![
  58         Box::new(std::rc::Rc::new({
  59             let y = 3;
  60             dbg!(y);
  61             y
  62         }));
  63         2
  64     ];
  65 }
  66
  67 fn should_not_warn_vec_macro_but_not_from_elem() {
  68     let v = vec![Rc::new("x".to_string())];
  69 }