36 lines
956 B
Rust
36 lines
956 B
Rust
// run-pass
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#![feature(destructuring_assignment)]
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struct TupleStruct<S, T>(S, T);
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impl<S, T> TupleStruct<S, T> {
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fn assign(self, first: &mut S, second: &mut T) {
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// Test usage of `Self` instead of the struct name:
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Self(*first, *second) = self
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}
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}
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enum Enum<S, T> {
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SingleVariant(S, T)
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}
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type Alias<S> = Enum<S, isize>;
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fn main() {
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let (mut a, mut b);
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TupleStruct(a, b) = TupleStruct(0, 1);
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assert_eq!((a, b), (0, 1));
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TupleStruct(a, .., b) = TupleStruct(1, 2);
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assert_eq!((a, b), (1, 2));
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TupleStruct(_, a) = TupleStruct(2, 2);
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assert_eq!((a, b), (2, 2));
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TupleStruct(..) = TupleStruct(3, 4);
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assert_eq!((a, b), (2, 2));
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TupleStruct(5,6).assign(&mut a, &mut b);
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assert_eq!((a, b), (5, 6));
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Enum::SingleVariant(a, b) = Enum::SingleVariant(7, 8);
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assert_eq!((a, b), (7, 8));
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Alias::SingleVariant(a, b) = Alias::SingleVariant(9, 10);
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assert_eq!((a, b), (9, 10));
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}
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