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b3827e4f3728b77bd3e60587487ebfc3cc8d901b
rust/tests/ui/binding/irrefutable-if-let-without-else.fixed

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[AUTO-GENERATED] Migrate ui tests from `//` to `//@` directives
2024-02-16 20:02:50 +00:00
//@ run-rustfix
Suggest turnging `if let` into irrefutable `let` if appropriate When encountering an `if let` tail expression without an `else` arm for an enum with a single variant, suggest writing an irrefutable `let` binding instead. ``` error[E0317]: `if` may be missing an `else` clause --> $DIR/irrefutable-if-let-without-else.rs:8:5 | LL | fn foo(x: Enum) -> i32 { | --- expected `i32` because of this return type LL | / if let Enum::Variant(value) = x { LL | | value LL | | } | |_____^ expected `i32`, found `()` | = note: `if` expressions without `else` evaluate to `()` = help: consider adding an `else` block that evaluates to the expected type help: consider using an irrefutable `let` binding instead | LL ~ let Enum::Variant(value) = x; LL ~ value | ``` Fix #61788.
2024-01-29 20:34:29 +00:00
enum Enum {
Variant(i32),
}
struct Struct(i32);
fn foo(x: Enum) -> i32 {
let Enum::Variant(value) = x;
value
}
fn bar(x: Enum) -> i32 {
let Enum::Variant(value) = x;
let x = value + 1;
x
}
fn baz(x: Struct) -> i32 {
let Struct(value) = x;
let x = value + 1;
x
}
fn main() {
let _ = foo(Enum::Variant(42));
let _ = bar(Enum::Variant(42));
let _ = baz(Struct(42));
}
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