rust/tests/ui/closures/2229_closure_analysis/capture-enums.rs

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// edition:2021
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#![feature(rustc_attrs)]
enum Info {
Point(i32, i32, String),
Meta(String, Vec<(i32, i32)>)
}
fn multi_variant_enum() {
let point = Info::Point(10, -10, "1".into());
let vec = Vec::new();
let meta = Info::Meta("meta".into(), vec);
let c = #[rustc_capture_analysis]
//~^ ERROR: attributes on expressions are experimental
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//~| NOTE: see issue #15701 <https://github.com/rust-lang/rust/issues/15701>
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//~| NOTE: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date
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|| {
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//~^ First Pass analysis includes:
//~| Min Capture analysis includes:
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if let Info::Point(_, _, str) = point {
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//~^ NOTE: Capturing point[] -> ImmBorrow
//~| NOTE: Capturing point[(2, 0)] -> ByValue
//~| NOTE: Min Capture point[] -> ByValue
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println!("{}", str);
}
if let Info::Meta(_, v) = meta {
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//~^ NOTE: Capturing meta[] -> ImmBorrow
//~| NOTE: Capturing meta[(1, 1)] -> ByValue
//~| NOTE: Min Capture meta[] -> ByValue
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println!("{:?}", v);
}
};
c();
}
enum SingleVariant {
Point(i32, i32, String),
}
fn single_variant_enum() {
let point = SingleVariant::Point(10, -10, "1".into());
let c = #[rustc_capture_analysis]
//~^ ERROR: attributes on expressions are experimental
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//~| NOTE: see issue #15701 <https://github.com/rust-lang/rust/issues/15701>
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//~| NOTE: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date
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|| {
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//~^ First Pass analysis includes:
//~| Min Capture analysis includes:
let SingleVariant::Point(_, _, str) = point;
//~^ NOTE: Capturing point[(2, 0)] -> ByValue
//~| NOTE: Min Capture point[(2, 0)] -> ByValue
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println!("{}", str);
};
c();
}
fn main() {}