rust/tests/ui/pattern/pat-tuple-underfield.rs
2023-01-11 09:32:08 +00:00

68 lines
2.5 KiB
Rust

struct S(i32, f32);
enum E {
S(i32, f32),
}
struct Point4(i32, i32, i32, i32);
fn main() {
match S(0, 1.0) {
S(x) => {}
//~^ ERROR this pattern has 1 field, but the corresponding tuple struct has 2 fields
//~| HELP use `_` to explicitly ignore each field
}
match S(0, 1.0) {
S(_) => {}
//~^ ERROR this pattern has 1 field, but the corresponding tuple struct has 2 fields
//~| HELP use `_` to explicitly ignore each field
//~| HELP use `..` to ignore all fields
}
match S(0, 1.0) {
S() => {}
//~^ ERROR this pattern has 0 fields, but the corresponding tuple struct has 2 fields
//~| HELP use `_` to explicitly ignore each field
//~| HELP use `..` to ignore all fields
// Test non-standard formatting
S () => {}
//~^ ERROR this pattern has 0 fields, but the corresponding tuple struct has 2 fields
//~| HELP use `_` to explicitly ignore each field
//~| HELP use `..` to ignore all fields
}
match E::S(0, 1.0) {
E::S(x) => {}
//~^ ERROR this pattern has 1 field, but the corresponding tuple variant has 2 fields
//~| HELP use `_` to explicitly ignore each field
}
match E::S(0, 1.0) {
E::S(_) => {}
//~^ ERROR this pattern has 1 field, but the corresponding tuple variant has 2 fields
//~| HELP use `_` to explicitly ignore each field
//~| HELP use `..` to ignore all fields
}
match E::S(0, 1.0) {
E::S() => {}
//~^ ERROR this pattern has 0 fields, but the corresponding tuple variant has 2 fields
//~| HELP use `_` to explicitly ignore each field
//~| HELP use `..` to ignore all fields
// Test non-standard formatting
E::S () => {}
//~^ ERROR this pattern has 0 fields, but the corresponding tuple variant has 2 fields
//~| HELP use `_` to explicitly ignore each field
//~| HELP use `..` to ignore all fields
}
match E::S(0, 1.0) {
E::S => {}
//~^ ERROR expected unit struct, unit variant or constant, found tuple variant `E::S`
//~| HELP use the tuple variant pattern syntax instead
}
match Point4(0, 1, 2, 3) {
Point4( a , _ ) => {}
//~^ ERROR this pattern has 2 fields, but the corresponding tuple struct has 4 fields
//~| HELP use `_` to explicitly ignore each field
//~| HELP use `..` to ignore the rest of the fields
}
}