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| author | bors <bors@rust-lang.org> | 2020-11-12 23:23:56 +0000 |
|---|---|---|
| committer | bors <bors@rust-lang.org> | 2020-11-12 23:23:56 +0000 |
| commit | e80ee05bfc135d7d800f3fcc89bc005d6858cd9b (patch) | |
| tree | 4b8950bc77d07a409c0c444ac07d6816785eede1 /src/test/ui/destructuring-assignment/tuple_struct_destructure.rs | |
| parent | 9722952f0bed5815cb22cb4878be09fb39f92804 (diff) | |
| parent | 38ca6e3561dbd2465cd604feeed93cf82580745c (diff) | |
| download | rust-e80ee05bfc135d7d800f3fcc89bc005d6858cd9b.tar.gz rust-e80ee05bfc135d7d800f3fcc89bc005d6858cd9b.zip | |
Auto merge of #78998 - m-ou-se:rollup-6r4pt9m, r=m-ou-se
Rollup of 7 pull requests Successful merges: - #76730 (Fix rustdoc rendering of by-value mutable arguments in async fn) - #78836 (Implement destructuring assignment for structs and slices) - #78857 (Improve BinaryHeap performance) - #78950 (Add asm register information for SPIR-V) - #78970 (update rustfmt to v1.4.25) - #78972 (Update cargo) - #78987 (extend min_const_generics param ty tests) Failed merges: r? `@ghost` `@rustbot` modify labels: rollup
Diffstat (limited to 'src/test/ui/destructuring-assignment/tuple_struct_destructure.rs')
| -rw-r--r-- | src/test/ui/destructuring-assignment/tuple_struct_destructure.rs | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/src/test/ui/destructuring-assignment/tuple_struct_destructure.rs b/src/test/ui/destructuring-assignment/tuple_struct_destructure.rs new file mode 100644 index 00000000000..106a9b16db4 --- /dev/null +++ b/src/test/ui/destructuring-assignment/tuple_struct_destructure.rs @@ -0,0 +1,34 @@ +// run-pass + +#![feature(destructuring_assignment)] + +struct TupleStruct<S, T>(S, T); + +impl<S, T> TupleStruct<S, T> { + fn assign(self, first: &mut S, second: &mut T) { + // Test usage of `Self` instead of the struct name: + Self(*first, *second) = self + } +} + +enum Enum<S, T> { + SingleVariant(S, T) +} + +type Alias<S> = Enum<S, isize>; + +fn main() { + let (mut a, mut b); + TupleStruct(a, b) = TupleStruct(0, 1); + assert_eq!((a, b), (0, 1)); + TupleStruct(a, .., b) = TupleStruct(1, 2); + assert_eq!((a, b), (1, 2)); + TupleStruct(..) = TupleStruct(3, 4); + assert_eq!((a, b), (1, 2)); + TupleStruct(5,6).assign(&mut a, &mut b); + assert_eq!((a, b), (5, 6)); + Enum::SingleVariant(a, b) = Enum::SingleVariant(7, 8); + assert_eq!((a, b), (7, 8)); + Alias::SingleVariant(a, b) = Alias::SingleVariant(9, 10); + assert_eq!((a, b), (9, 10)); +} |
