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

   1 // run-rustfix
   2
   3 #![allow(unused, clippy::needless_pass_by_value, clippy::collapsible_if)]
   4 #![warn(clippy::map_entry)]
   5
   6 use std::collections::{BTreeMap, HashMap};
   7 use std::hash::Hash;
   8
   9 macro_rules! m {
  10     ($e:expr) => {{ $e }};
  11 }
  12
  13 fn foo() {}
  14
  15 fn insert_if_absent0<K: Eq + Hash + Copy, V: Copy>(m: &mut HashMap<K, V>, k: K, v: V, v2: V) {
  16     match m.entry(k) {
  17         std::collections::hash_map::Entry::Vacant(e) => {
  18             e.insert(v);
  19         }
  20         std::collections::hash_map::Entry::Occupied(mut e) => {
  21             e.insert(v2);
  22         }
  23     }
  24
  25     match m.entry(k) {
  26         std::collections::hash_map::Entry::Occupied(mut e) => {
  27             e.insert(v);
  28         }
  29         std::collections::hash_map::Entry::Vacant(e) => {
  30             e.insert(v2);
  31         }
  32     }
  33
  34     if let std::collections::hash_map::Entry::Vacant(e) = m.entry(k) {
  35         e.insert(v);
  36     } else {
  37         foo();
  38     }
  39
  40     if let std::collections::hash_map::Entry::Occupied(mut e) = m.entry(k) {
  41         e.insert(v);
  42     } else {
  43         foo();
  44     }
  45
  46     match m.entry(k) {
  47         std::collections::hash_map::Entry::Vacant(e) => {
  48             e.insert(v);
  49         }
  50         std::collections::hash_map::Entry::Occupied(mut e) => {
  51             e.insert(v2);
  52         }
  53     }
  54
  55     match m.entry(k) {
  56         std::collections::hash_map::Entry::Occupied(mut e) => {
  57             if true { Some(e.insert(v)) } else { Some(e.insert(v2)) }
  58         }
  59         std::collections::hash_map::Entry::Vacant(e) => {
  60             e.insert(v);
  61             None
  62         }
  63     };
  64
  65     if let std::collections::hash_map::Entry::Occupied(mut e) = m.entry(k) {
  66         foo();
  67         Some(e.insert(v))
  68     } else {
  69         None
  70     };
  71 }
  72
  73 fn main() {}