rust-clippy/tests/ui/needless_match.stderr

error: this match expression is unnecessary
  --> $DIR/needless_match.rs:15:18
   |
LL |       let _: i32 = match i {
   |  __________________^
LL | |         0 => 0,
LL | |         1 => 1,
LL | |         2 => 2,
LL | |         _ => i,
LL | |     };
   | |_____^ help: replace it with: `i`
   |
   = note: `-D clippy::needless-match` implied by `-D warnings`
   = help: to override `-D warnings` add `#[allow(clippy::needless_match)]`

error: this match expression is unnecessary
  --> $DIR/needless_match.rs:22:19
   |
LL |       let _: &str = match s {
   |  ___________________^
LL | |         "a" => "a",
LL | |         "b" => "b",
LL | |         s => s,
LL | |     };
   | |_____^ help: replace it with: `s`

error: this match expression is unnecessary
  --> $DIR/needless_match.rs:31:21
   |
LL |       let _: Simple = match se {
   |  _____________________^
LL | |         Simple::A => Simple::A,
LL | |         Simple::B => Simple::B,
LL | |         Simple::C => Simple::C,
LL | |         Simple::D => Simple::D,
LL | |     };
   | |_____^ help: replace it with: `se`

error: this match expression is unnecessary
  --> $DIR/needless_match.rs:53:26
   |
LL |       let _: Option<i32> = match x {
   |  __________________________^
LL | |         Some(a) => Some(a),
LL | |         None => None,
LL | |     };
   | |_____^ help: replace it with: `x`

error: this match expression is unnecessary
  --> $DIR/needless_match.rs:69:31
   |
LL |       let _: Result<i32, i32> = match Ok(1) {
   |  _______________________________^
LL | |         Ok(a) => Ok(a),
LL | |         Err(err) => Err(err),
LL | |     };
   | |_____^ help: replace it with: `Ok(1)`

error: this match expression is unnecessary
  --> $DIR/needless_match.rs:73:31
   |
LL |       let _: Result<i32, i32> = match func_ret_err(0_i32) {
   |  _______________________________^
LL | |         Err(err) => Err(err),
LL | |         Ok(a) => Ok(a),
LL | |     };
   | |_____^ help: replace it with: `func_ret_err(0_i32)`

error: this if-let expression is unnecessary
  --> $DIR/needless_match.rs:86:13
   |
LL |     let _ = if let Some(a) = Some(1) { Some(a) } else { None };
   |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `Some(1)`

error: this if-let expression is unnecessary
  --> $DIR/needless_match.rs:121:31
   |
LL |     let _: Result<i32, i32> = if let Err(e) = x { Err(e) } else { x };
   |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `x`

error: this if-let expression is unnecessary
  --> $DIR/needless_match.rs:122:31
   |
LL |     let _: Result<i32, i32> = if let Ok(val) = x { Ok(val) } else { x };
   |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `x`

error: this if-let expression is unnecessary
  --> $DIR/needless_match.rs:129:21
   |
LL |       let _: Simple = if let Simple::A = x {
   |  _____________________^
LL | |         Simple::A
LL | |     } else if let Simple::B = x {
LL | |         Simple::B
...  |
LL | |         x
LL | |     };
   | |_____^ help: replace it with: `x`

error: this match expression is unnecessary
  --> $DIR/needless_match.rs:168:26
   |
LL |           let _: Complex = match ce {
   |  __________________________^
LL | |             Complex::A(a) => Complex::A(a),
LL | |             Complex::B(a, b) => Complex::B(a, b),
LL | |             Complex::C(a, b, c) => Complex::C(a, b, c),
LL | |             Complex::D(E::VariantA(ea, eb), b) => Complex::D(E::VariantA(ea, eb), b),
LL | |             Complex::D(E::VariantB(ea, eb), b) => Complex::D(E::VariantB(ea, eb), b),
LL | |         };
   | |_________^ help: replace it with: `ce`

error: this match expression is unnecessary
  --> $DIR/needless_match.rs:252:17
   |
LL |           let _ = match e {
   |  _________________^
LL | |             _ if some_bool => e,
LL | |             _ => e,
LL | |         };
   | |_________^ help: replace it with: `e`

error: this match expression is unnecessary
  --> $DIR/needless_match.rs:258:17
   |
LL |           let _ = match e {
   |  _________________^
LL | |             Some(i) => Some(i),
LL | |             _ if some_bool => e,
LL | |             _ => e,
LL | |         };
   | |_________^ help: replace it with: `e`

error: aborting due to 13 previous errors