src/tools/clippy/tests/ui/bind_instead_of_map_multipart.fixed

   1 // run-rustfix
   2 #![deny(clippy::bind_instead_of_map)]
   3 #![allow(clippy::blocks_in_if_conditions)]
   4
   5 pub fn main() {
   6     let _ = Some("42").map(|s| if s.len() < 42 { 0 } else { s.len() });
   7     let _ = Some("42").and_then(|s| if s.len() < 42 { None } else { Some(s.len()) });
   8
   9     let _ = Ok::<_, ()>("42").map(|s| if s.len() < 42 { 0 } else { s.len() });
  10     let _ = Ok::<_, ()>("42").and_then(|s| if s.len() < 42 { Err(()) } else { Ok(s.len()) });
  11
  12     let _ = Err::<(), _>("42").map_err(|s| if s.len() < 42 { s.len() + 20 } else { s.len() });
  13     let _ = Err::<(), _>("42").or_else(|s| if s.len() < 42 { Ok(()) } else { Err(s.len()) });
  14
  15     hard_example();
  16     macro_example();
  17 }
  18
  19 fn hard_example() {
  20     Some("42").map(|s| {
  21         if {
  22             if s == "43" {
  23                 return 43;
  24             }
  25             s == "42"
  26         } {
  27             return 45;
  28         }
  29         match s.len() {
  30             10 => 2,
  31             20 => {
  32                 if foo() {
  33                     return {
  34                         if foo() {
  35                             return 20;
  36                         }
  37                         println!("foo");
  38                         3
  39                     };
  40                 }
  41                 20
  42             },
  43             40 => 30,
  44             _ => 1,
  45         }
  46     });
  47 }
  48
  49 fn foo() -> bool {
  50     true
  51 }
  52
  53 macro_rules! m {
  54     () => {
  55         Some(10)
  56     };
  57 }
  58
  59 fn macro_example() {
  60     let _ = Some("").and_then(|s| if s.len() == 20 { m!() } else { Some(20) });
  61     let _ = Some("").map(|s| if s.len() == 20 { m!() } else { Some(20) });
  62 }