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e006c77d61
look inside refs and detect if let &None = ... Fixes https://github.com/rust-lang/rust-clippy/issues/5396 changelog: redundant_pattern_matching: look inside Refs to fix FNs with "if let &None = .. "
105 lines
2.8 KiB
Text
105 lines
2.8 KiB
Text
error: you don't need to add `&` to all patterns
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--> $DIR/match_ref_pats.rs:6:9
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LL | / match v {
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LL | | &Some(v) => println!("{:?}", v),
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LL | | &None => println!("none"),
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LL | | }
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| |_________^
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= note: `-D clippy::match-ref-pats` implied by `-D warnings`
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help: instead of prefixing all patterns with `&`, you can dereference the expression
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LL | match *v {
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LL | Some(v) => println!("{:?}", v),
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LL | None => println!("none"),
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error: you don't need to add `&` to all patterns
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--> $DIR/match_ref_pats.rs:17:5
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LL | / match tup {
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LL | | &(v, 1) => println!("{}", v),
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LL | | _ => println!("none"),
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LL | | }
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| |_____^
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help: instead of prefixing all patterns with `&`, you can dereference the expression
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LL | match *tup {
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LL | (v, 1) => println!("{}", v),
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error: you don't need to add `&` to both the expression and the patterns
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--> $DIR/match_ref_pats.rs:23:5
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LL | / match &w {
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LL | | &Some(v) => println!("{:?}", v),
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LL | | &None => println!("none"),
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LL | | }
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| |_____^
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help: try
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LL | match w {
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LL | Some(v) => println!("{:?}", v),
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LL | None => println!("none"),
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error: redundant pattern matching, consider using `is_none()`
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--> $DIR/match_ref_pats.rs:35:12
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LL | if let &None = a {
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| -------^^^^^---- help: try this: `if a.is_none()`
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= note: `-D clippy::redundant-pattern-matching` implied by `-D warnings`
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error: you don't need to add `&` to all patterns
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--> $DIR/match_ref_pats.rs:35:5
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LL | / if let &None = a {
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LL | | println!("none");
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LL | | }
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| |_____^
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help: instead of prefixing all patterns with `&`, you can dereference the expression
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LL | if let None = *a {
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| ^^^^ ^^
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error: redundant pattern matching, consider using `is_none()`
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--> $DIR/match_ref_pats.rs:40:12
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LL | if let &None = &b {
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| -------^^^^^----- help: try this: `if b.is_none()`
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error: you don't need to add `&` to both the expression and the patterns
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--> $DIR/match_ref_pats.rs:40:5
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LL | / if let &None = &b {
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LL | | println!("none");
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LL | | }
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| |_____^
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help: try
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LL | if let None = b {
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| ^^^^ ^
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error: you don't need to add `&` to all patterns
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--> $DIR/match_ref_pats.rs:67:9
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LL | / match foo_variant!(0) {
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LL | | &Foo::A => println!("A"),
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LL | | _ => println!("Wild"),
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LL | | }
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| |_________^
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help: instead of prefixing all patterns with `&`, you can dereference the expression
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LL | match *foo_variant!(0) {
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LL | Foo::A => println!("A"),
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error: aborting due to 8 previous errors
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