147 lines
3.1 KiB
Rust
147 lines
3.1 KiB
Rust
#![warn(clippy::match_same_arms)]
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#![allow(
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clippy::blacklisted_name,
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clippy::collapsible_if,
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clippy::cognitive_complexity,
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clippy::eq_op,
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clippy::needless_continue,
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clippy::needless_return,
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clippy::no_effect,
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clippy::zero_divided_by_zero,
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clippy::unused_unit
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)]
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fn bar<T>(_: T) {}
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fn foo() -> bool {
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unimplemented!()
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}
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pub enum Abc {
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A,
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B,
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C,
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}
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#[allow(clippy::unused_unit)]
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fn match_same_arms() {
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let _ = match 42 {
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42 => {
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foo();
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let mut a = 42 + [23].len() as i32;
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if true {
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a += 7;
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}
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a = -31 - a;
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a
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},
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_ => {
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//~ ERROR match arms have same body
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foo();
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let mut a = 42 + [23].len() as i32;
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if true {
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a += 7;
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}
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a = -31 - a;
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a
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},
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};
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let _ = match Abc::A {
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Abc::A => 0,
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Abc::B => 1,
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_ => 0, //~ ERROR match arms have same body
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};
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let _ = match 42 {
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42 => foo(),
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51 => foo(), //~ ERROR match arms have same body
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_ => true,
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};
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let _ = match Some(42) {
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Some(_) => 24,
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None => 24, //~ ERROR match arms have same body
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};
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let _ = match Some(42) {
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Some(foo) => 24,
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None => 24,
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};
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let _ = match Some(42) {
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Some(42) => 24,
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Some(a) => 24, // bindings are different
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None => 0,
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};
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let _ = match Some(42) {
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Some(a) if a > 0 => 24,
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Some(a) => 24, // one arm has a guard
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None => 0,
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};
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match (Some(42), Some(42)) {
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(Some(a), None) => bar(a),
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(None, Some(a)) => bar(a), //~ ERROR match arms have same body
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_ => (),
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}
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match (Some(42), Some(42)) {
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(Some(a), ..) => bar(a),
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(.., Some(a)) => bar(a), //~ ERROR match arms have same body
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_ => (),
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}
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match (1, 2, 3) {
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(1, .., 3) => 42,
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(.., 3) => 42, //~ ERROR match arms have same body
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_ => 0,
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};
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let _ = match Some(()) {
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Some(()) => 0.0,
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None => -0.0,
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};
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match (Some(42), Some("")) {
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(Some(a), None) => bar(a),
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(None, Some(a)) => bar(a), // bindings have different types
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_ => (),
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}
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let _ = match 42 {
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42 => 1,
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51 => 1, //~ ERROR match arms have same body
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41 => 2,
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52 => 2, //~ ERROR match arms have same body
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_ => 0,
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};
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let _ = match 42 {
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1 => 2,
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2 => 2, //~ ERROR 2nd matched arms have same body
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3 => 2, //~ ERROR 3rd matched arms have same body
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4 => 3,
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_ => 0,
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};
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}
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mod issue4244 {
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#[derive(PartialEq, PartialOrd, Eq, Ord)]
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pub enum CommandInfo {
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BuiltIn { name: String, about: Option<String> },
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External { name: String, path: std::path::PathBuf },
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}
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impl CommandInfo {
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pub fn name(&self) -> String {
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match self {
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CommandInfo::BuiltIn { name, .. } => name.to_string(),
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CommandInfo::External { name, .. } => name.to_string(),
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}
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}
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}
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}
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fn main() {}
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